644 files changed, 84104 insertions, 15204 deletions

diff --git a/drivers/iio/Kconfig b/drivers/iio/Kconfig
index 5bd51853b15e..b190846c3dc2 100644
--- a/drivers/iio/Kconfig
+++ b/drivers/iio/Kconfig
@@ -63,19 +63,22 @@ config IIO_SW_TRIGGER
 	  using the API provided.
 
 config IIO_TRIGGERED_EVENT
-	tristate
+	tristate "Enable triggered events support"
 	select IIO_TRIGGER
 	help
 	  Provides helper functions for setting up triggered events.
 
 source "drivers/iio/accel/Kconfig"
 source "drivers/iio/adc/Kconfig"
+source "drivers/iio/addac/Kconfig"
 source "drivers/iio/afe/Kconfig"
 source "drivers/iio/amplifiers/Kconfig"
+source "drivers/iio/cdc/Kconfig"
 source "drivers/iio/chemical/Kconfig"
 source "drivers/iio/common/Kconfig"
 source "drivers/iio/dac/Kconfig"
 source "drivers/iio/dummy/Kconfig"
+source "drivers/iio/filter/Kconfig"
 source "drivers/iio/frequency/Kconfig"
 source "drivers/iio/gyro/Kconfig"
 source "drivers/iio/health/Kconfig"
@@ -85,9 +88,11 @@ source "drivers/iio/light/Kconfig"
 source "drivers/iio/magnetometer/Kconfig"
 source "drivers/iio/multiplexer/Kconfig"
 source "drivers/iio/orientation/Kconfig"
+source "drivers/iio/test/Kconfig"
 if IIO_TRIGGER
    source "drivers/iio/trigger/Kconfig"
 endif #IIO_TRIGGER
+source "drivers/iio/position/Kconfig"
 source "drivers/iio/potentiometer/Kconfig"
 source "drivers/iio/potentiostat/Kconfig"
 source "drivers/iio/pressure/Kconfig"
diff --git a/drivers/iio/Makefile b/drivers/iio/Makefile
index bff682ad1cfb..3be08cdadd7e 100644
--- a/drivers/iio/Makefile
+++ b/drivers/iio/Makefile
@@ -15,14 +15,17 @@ obj-$(CONFIG_IIO_TRIGGERED_EVENT) += industrialio-triggered-event.o
 
 obj-y += accel/
 obj-y += adc/
+obj-y += addac/
 obj-y += afe/
 obj-y += amplifiers/
 obj-y += buffer/
+obj-y += cdc/
 obj-y += chemical/
 obj-y += common/
 obj-y += dac/
 obj-y += dummy/
 obj-y += gyro/
+obj-y += filter/
 obj-y += frequency/
 obj-y += health/
 obj-y += humidity/
@@ -31,10 +34,12 @@ obj-y += light/
 obj-y += magnetometer/
 obj-y += multiplexer/
 obj-y += orientation/
+obj-y += position/
 obj-y += potentiometer/
 obj-y += potentiostat/
 obj-y += pressure/
 obj-y += proximity/
 obj-y += resolver/
 obj-y += temperature/
+obj-y += test/
 obj-y += trigger/
diff --git a/drivers/iio/TODO b/drivers/iio/TODO
new file mode 100644
index 000000000000..7d7326b7085a
--- /dev/null
+++ b/drivers/iio/TODO
@@ -0,0 +1,19 @@
+2020-02-29
+
+Documentation
+  - Binding docs for devices that are obviously used via device
+tree
+  - Yaml conversions for abandoned drivers
+  - ABI Documentation
+  - Audit driviers/iio/staging/Documentation
+
+- Replace iio_dev->mlock by either a local lock or use
+iio_claim_direct.(Requires analysis of the purpose of the lock.)
+
+- Converting drivers from device tree centric to more generic
+property handlers.
+
+- Refactor old platform_data constructs from drivers and convert it
+to state struct and using property handlers and readers.
+
+Mailing list: linux-iio@vger.kernel.org
diff --git a/drivers/iio/accel/Kconfig b/drivers/iio/accel/Kconfig
index 5d91a6dda894..ffac66db7ac9 100644
--- a/drivers/iio/accel/Kconfig
+++ b/drivers/iio/accel/Kconfig
@@ -30,6 +30,35 @@ config ADIS16209
 	  To compile this driver as a module, say M here: the module will be
 	  called adis16209.
 
+config ADXL313
+	tristate
+
+config ADXL313_I2C
+	tristate "Analog Devices ADXL313 3-Axis Digital Accelerometer I2C Driver"
+	depends on I2C
+	select ADXL313
+	select REGMAP_I2C
+	help
+	  Say Y here if you want to build i2c support for the Analog Devices
+	  ADXL313 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl313_i2c and you will also get adxl313_core
+	  for the core module.
+
+config ADXL313_SPI
+	tristate "Analog Devices ADXL313 3-Axis Digital Accelerometer SPI Driver"
+	depends on SPI
+	select ADXL313
+	select REGMAP_SPI
+	help
+	  Say Y here if you want to build spi support for the Analog Devices
+	  ADXL313 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl313_spi and you will also get adxl313_core
+	  for the core module.
+
 config ADXL345
 	tristate
 
@@ -61,6 +90,66 @@ config ADXL345_SPI
 	  will be called adxl345_spi and you will also get adxl345_core
 	  for the core module.
 
+config ADXL355
+	tristate
+
+config ADXL355_I2C
+	tristate "Analog Devices ADXL355 3-Axis Digital Accelerometer I2C Driver"
+	depends on I2C
+	select ADXL355
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here if you want to build i2c support for the Analog Devices
+	  ADXL355 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl355_i2c and you will also get adxl355_core
+	  for the core module.
+
+config ADXL355_SPI
+	tristate "Analog Devices ADXL355 3-Axis Digital Accelerometer SPI Driver"
+	depends on SPI
+	select ADXL355
+	select REGMAP_SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here if you want to build spi support for the Analog Devices
+	  ADXL355 3-axis digital accelerometer.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called adxl355_spi and you will also get adxl355_core
+	  for the core module.
+
+config ADXL367
+	tristate
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+
+config ADXL367_SPI
+	tristate "Analog Devices ADXL367 3-Axis Accelerometer SPI Driver"
+	depends on SPI
+	select ADXL367
+	select REGMAP_SPI
+	help
+	  Say yes here to add support for the Analog Devices ADXL367 triaxial
+	  acceleration sensor.
+	  To compile this driver as a module, choose M here: the
+	  module will be called adxl367_spi.
+
+config ADXL367_I2C
+	tristate "Analog Devices ADXL367 3-Axis Accelerometer I2C Driver"
+	depends on I2C
+	select ADXL367
+	select REGMAP_I2C
+	help
+	  Say yes here to add support for the Analog Devices ADXL367 triaxial
+	  acceleration sensor.
+	  To compile this driver as a module, choose M here: the
+	  module will be called adxl367_i2c.
+
 config ADXL372
 	tristate
 	select IIO_BUFFER
@@ -89,13 +178,13 @@ config ADXL372_I2C
 	  module will be called adxl372_i2c.
 
 config BMA180
-	tristate "Bosch BMA180/BMA25x 3-Axis Accelerometer Driver"
-	depends on I2C
+	tristate "Bosch BMA023/BMA1x0/BMA250 3-Axis Accelerometer Driver"
+	depends on I2C && INPUT_BMA150=n
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
-	  Say Y here if you want to build a driver for the Bosch BMA180 or
-	  BMA25x triaxial acceleration sensor.
+	  Say Y here if you want to build a driver for the Bosch BMA023, BMA150
+	  BMA180, BMA250 or SMB380 triaxial acceleration sensor.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called bma180.
@@ -115,19 +204,27 @@ config BMA220
 config BMA400
 	tristate "Bosch BMA400 3-Axis Accelerometer Driver"
 	select REGMAP
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	select BMA400_I2C if I2C
+	select BMA400_SPI if SPI
 	help
 	  Say Y here if you want to build a driver for the Bosch BMA400
 	  triaxial acceleration sensor.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called bma400_core and you will also get
-	  bma400_i2c if I2C is enabled.
+	  bma400_i2c if I2C is enabled and bma400_spi if SPI is
+	  enabled.
 
 config BMA400_I2C
 	tristate
 	depends on BMA400
 
+config BMA400_SPI
+	tristate
+	depends on BMA400
+
 config BMC150_ACCEL
 	tristate "Bosch BMC150 Accelerometer Driver"
 	select IIO_BUFFER
@@ -137,9 +234,13 @@ config BMC150_ACCEL
 	select BMC150_ACCEL_SPI if SPI
 	help
 	  Say yes here to build support for the following Bosch accelerometers:
-	  BMC150, BMI055, BMA250E, BMA222E, BMA255, BMA280.
+	  BMA222, BMA222E, BMA250E, BMA253, BMA254, BMA255, BMA280, BMC150, BMC156
+	  BMI055.
+
+	  Note that some of these are combo modules:
+	    - BMC150/BMC156: accelerometer and magnetometer
+	    - BMI055: accelerometer and gyroscope
 
-	  This is a combo module with both accelerometer and magnetometer.
 	  This driver is only implementing accelerometer part, which has
 	  its own address and register map.
 
@@ -151,6 +252,24 @@ config BMC150_ACCEL_SPI
 	tristate
 	select REGMAP_SPI
 
+config BMI088_ACCEL
+	tristate "Bosch BMI088 Accelerometer Driver"
+	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select REGMAP
+	select BMI088_ACCEL_SPI
+	help
+	  Say yes here to build support for the Bosch BMI088 accelerometer.
+
+	  This is a combo module with both accelerometer and gyroscope. This
+	  driver only implements the accelerometer part, which has its own
+	  address and register map. BMG160 provides the gyroscope driver.
+
+config BMI088_ACCEL_SPI
+	tristate
+	select REGMAP_SPI
+
 config DA280
 	tristate "MiraMEMS DA280 3-axis 14-bit digital accelerometer driver"
 	depends on I2C
@@ -173,7 +292,6 @@ config DA311
 
 config DMARD06
 	tristate "Domintech DMARD06 Digital Accelerometer Driver"
-	depends on OF || COMPILE_TEST
 	depends on I2C
 	help
 	  Say yes here to build support for the Domintech low-g tri-axial
@@ -202,10 +320,38 @@ config DMARD10
 	  Choosing M will build the driver as a module. If so, the module
 	  will be called dmard10.
 
+config FXLS8962AF
+	tristate
+	depends on I2C || !I2C # cannot be built-in for modular I2C
+
+config FXLS8962AF_I2C
+	tristate "NXP FXLS8962AF/FXLS8964AF Accelerometer I2C Driver"
+	depends on I2C
+	select FXLS8962AF
+	select REGMAP_I2C
+	help
+	  Say yes here to build support for the NXP 3-axis automotive
+	  accelerometer FXLS8962AF/FXLS8964AF with I2C support.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called fxls8962af_i2c.
+
+config FXLS8962AF_SPI
+	tristate "NXP FXLS8962AF/FXLS8964AF Accelerometer SPI Driver"
+	depends on SPI
+	depends on I2C || !I2C
+	select FXLS8962AF
+	select REGMAP_SPI
+	help
+	  Say yes here to build support for the NXP 3-axis automotive
+	  accelerometer FXLS8962AF/FXLS8964AF with SPI support.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called fxls8962af_spi.
+
 config HID_SENSOR_ACCEL_3D
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Accelerometers 3D"
@@ -231,32 +377,37 @@ config IIO_ST_ACCEL_3AXIS
 	depends on !SENSORS_LIS3_I2C
 	depends on !SENSORS_LIS3_SPI
 	select IIO_ST_SENSORS_CORE
-	select IIO_ST_ACCEL_I2C_3AXIS if (I2C)
-	select IIO_ST_ACCEL_SPI_3AXIS if (SPI_MASTER)
 	select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
 	help
 	  Say yes here to build support for STMicroelectronics accelerometers:
 	  LSM303DLH, LSM303DLHC, LIS3DH, LSM330D, LSM330DL, LSM330DLC,
 	  LIS331DLH, LSM303DL, LSM303DLM, LSM330, LIS2DH12, H3LIS331DL,
-	  LNG2DM, LIS3DE, LIS2DE12
-
-	  This driver can also be built as a module. If so, these modules
-	  will be created:
-	  - st_accel (core functions for the driver [it is mandatory]);
-	  - st_accel_i2c (necessary for the I2C devices [optional*]);
-	  - st_accel_spi (necessary for the SPI devices [optional*]);
+	  LNG2DM, LIS3DE, LIS2DE12, LIS2HH12
 
-	  (*) one of these is necessary to do something.
+	  Also need to enable at least one of I2C and SPI interface drivers
+	  below.
 
 config IIO_ST_ACCEL_I2C_3AXIS
-	tristate
-	depends on IIO_ST_ACCEL_3AXIS
-	depends on IIO_ST_SENSORS_I2C
+	tristate "STMicroelectronics accelerometers 3-Axis I2C Interface"
+	depends on I2C && IIO_ST_ACCEL_3AXIS
+	default I2C && IIO_ST_ACCEL_3AXIS
+	select IIO_ST_SENSORS_I2C
+	help
+	  Build support for STMicroelectronics accelerometers I2C interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_accel_i2c.
 
 config IIO_ST_ACCEL_SPI_3AXIS
-	tristate
-	depends on IIO_ST_ACCEL_3AXIS
-	depends on IIO_ST_SENSORS_SPI
+	tristate "STMicroelectronics accelerometers 3-Axis SPI Interface"
+	depends on SPI_MASTER && IIO_ST_ACCEL_3AXIS
+	default SPI_MASTER && IIO_ST_ACCEL_3AXIS
+	select IIO_ST_SENSORS_SPI
+	help
+	  Build support for STMicroelectronics accelerometers SPI interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_accel_spi.
 
 config KXSD9
 	tristate "Kionix KXSD9 Accelerometer Driver"
@@ -390,6 +541,19 @@ config MMA9553
 	  To compile this driver as a module, choose M here: the module
 	  will be called mma9553.
 
+config MSA311
+	tristate "MEMSensing Digital 3-Axis Accelerometer Driver"
+	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select REGMAP_I2C
+	help
+	  Say yes here to build support for the MEMSensing MSA311
+	  accelerometer driver.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called msa311.
+
 config MXC4005
 	tristate "Memsic MXC4005XC 3-Axis Accelerometer Driver"
 	depends on I2C
@@ -426,6 +590,19 @@ config SCA3000
 	  To compile this driver as a module, say M here: the module will be
 	  called sca3000.
 
+config SCA3300
+	tristate "Murata SCA3300 3-Axis Accelerometer Driver"
+	depends on SPI
+	select CRC8
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to build support for Murata SCA3300 3-Axis
+	  accelerometer.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called sca3300.
+
 config STK8312
 	tristate "Sensortek STK8312 3-Axis Accelerometer Driver"
 	depends on I2C
diff --git a/drivers/iio/accel/Makefile b/drivers/iio/accel/Makefile
index 3a051cf37f40..5e45b5fa5ab5 100644
--- a/drivers/iio/accel/Makefile
+++ b/drivers/iio/accel/Makefile
@@ -6,9 +6,18 @@
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_ADIS16201) += adis16201.o
 obj-$(CONFIG_ADIS16209) += adis16209.o
+obj-$(CONFIG_ADXL313) += adxl313_core.o
+obj-$(CONFIG_ADXL313_I2C) += adxl313_i2c.o
+obj-$(CONFIG_ADXL313_SPI) += adxl313_spi.o
 obj-$(CONFIG_ADXL345) += adxl345_core.o
 obj-$(CONFIG_ADXL345_I2C) += adxl345_i2c.o
 obj-$(CONFIG_ADXL345_SPI) += adxl345_spi.o
+obj-$(CONFIG_ADXL355) += adxl355_core.o
+obj-$(CONFIG_ADXL355_I2C) += adxl355_i2c.o
+obj-$(CONFIG_ADXL355_SPI) += adxl355_spi.o
+obj-$(CONFIG_ADXL367) += adxl367.o
+obj-$(CONFIG_ADXL367_I2C) += adxl367_i2c.o
+obj-$(CONFIG_ADXL367_SPI) += adxl367_spi.o
 obj-$(CONFIG_ADXL372) += adxl372.o
 obj-$(CONFIG_ADXL372_I2C) += adxl372_i2c.o
 obj-$(CONFIG_ADXL372_SPI) += adxl372_spi.o
@@ -16,14 +25,20 @@ obj-$(CONFIG_BMA180) += bma180.o
 obj-$(CONFIG_BMA220) += bma220_spi.o
 obj-$(CONFIG_BMA400) += bma400_core.o
 obj-$(CONFIG_BMA400_I2C) += bma400_i2c.o
+obj-$(CONFIG_BMA400_SPI) += bma400_spi.o
 obj-$(CONFIG_BMC150_ACCEL) += bmc150-accel-core.o
 obj-$(CONFIG_BMC150_ACCEL_I2C) += bmc150-accel-i2c.o
 obj-$(CONFIG_BMC150_ACCEL_SPI) += bmc150-accel-spi.o
+obj-$(CONFIG_BMI088_ACCEL) += bmi088-accel-core.o
+obj-$(CONFIG_BMI088_ACCEL_SPI) += bmi088-accel-spi.o
 obj-$(CONFIG_DA280)	+= da280.o
 obj-$(CONFIG_DA311)	+= da311.o
 obj-$(CONFIG_DMARD06)	+= dmard06.o
 obj-$(CONFIG_DMARD09)	+= dmard09.o
 obj-$(CONFIG_DMARD10)	+= dmard10.o
+obj-$(CONFIG_FXLS8962AF)	+= fxls8962af-core.o
+obj-$(CONFIG_FXLS8962AF_I2C)	+= fxls8962af-i2c.o
+obj-$(CONFIG_FXLS8962AF_SPI)	+= fxls8962af-spi.o
 obj-$(CONFIG_HID_SENSOR_ACCEL_3D) += hid-sensor-accel-3d.o
 obj-$(CONFIG_KXCJK1013) += kxcjk-1013.o
 obj-$(CONFIG_KXSD9)	+= kxsd9.o
@@ -43,10 +58,13 @@ obj-$(CONFIG_MMA9551_CORE)	+= mma9551_core.o
 obj-$(CONFIG_MMA9551)		+= mma9551.o
 obj-$(CONFIG_MMA9553)		+= mma9553.o
 
+obj-$(CONFIG_MSA311)		+= msa311.o
+
 obj-$(CONFIG_MXC4005)		+= mxc4005.o
 obj-$(CONFIG_MXC6255)		+= mxc6255.o
 
 obj-$(CONFIG_SCA3000)		+= sca3000.o
+obj-$(CONFIG_SCA3300)		+= sca3300.o
 
 obj-$(CONFIG_STK8312)		+= stk8312.o
 obj-$(CONFIG_STK8BA50)		+= stk8ba50.o
diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
index 0f0f27a8184e..dfb8e2e5bdf5 100644
--- a/drivers/iio/accel/adis16201.c
+++ b/drivers/iio/accel/adis16201.c
@@ -8,10 +8,7 @@
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/mutex.h>
-#include <linux/slab.h>
 #include <linux/spi/spi.h>
-#include <linux/sysfs.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/imu/adis.h>
@@ -215,7 +212,7 @@ static const struct iio_chan_spec adis16201_channels[] = {
 	ADIS_AUX_ADC_CHAN(ADIS16201_AUX_ADC_REG, ADIS16201_SCAN_AUX_ADC, 0, 12),
 	ADIS_INCLI_CHAN(X, ADIS16201_XINCL_OUT_REG, ADIS16201_SCAN_INCLI_X,
 			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
-	ADIS_INCLI_CHAN(X, ADIS16201_YINCL_OUT_REG, ADIS16201_SCAN_INCLI_Y,
+	ADIS_INCLI_CHAN(Y, ADIS16201_YINCL_OUT_REG, ADIS16201_SCAN_INCLI_Y,
 			BIT(IIO_CHAN_INFO_CALIBBIAS), 0, 14),
 	IIO_CHAN_SOFT_TIMESTAMP(7)
 };
@@ -246,6 +243,7 @@ static const struct adis_data adis16201_data = {
 	.diag_stat_reg = ADIS16201_DIAG_STAT_REG,
 
 	.self_test_mask = ADIS16201_MSC_CTRL_SELF_TEST_EN,
+	.self_test_reg = ADIS16201_MSC_CTRL_REG,
 	.self_test_no_autoclear = true,
 	.timeouts = &adis16201_timeouts,
 
@@ -267,10 +265,8 @@ static int adis16201_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);
-	spi_set_drvdata(spi, indio_dev);
 
 	indio_dev->name = spi->dev.driver->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16201_info;
 
 	indio_dev->channels = adis16201_channels;
@@ -281,34 +277,15 @@ static int adis16201_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+	ret = devm_adis_setup_buffer_and_trigger(st, indio_dev, NULL);
 	if (ret)
 		return ret;
 
 	ret = adis_initial_startup(st);
 	if (ret)
-		goto error_cleanup_buffer_trigger;
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0)
-		goto error_cleanup_buffer_trigger;
-
-	return 0;
-
-error_cleanup_buffer_trigger:
-	adis_cleanup_buffer_and_trigger(st, indio_dev);
-	return ret;
-}
-
-static int adis16201_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	adis_cleanup_buffer_and_trigger(st, indio_dev);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static struct spi_driver adis16201_driver = {
@@ -316,7 +293,6 @@ static struct spi_driver adis16201_driver = {
 		.name = "adis16201",
 	},
 	.probe = adis16201_probe,
-	.remove = adis16201_remove,
 };
 module_spi_driver(adis16201_driver);
 
@@ -324,3 +300,4 @@ MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 MODULE_DESCRIPTION("Analog Devices ADIS16201 Dual-Axis Digital Inclinometer and Accelerometer");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("spi:adis16201");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/accel/adis16209.c b/drivers/iio/accel/adis16209.c
index c6dbd2424e10..5a9c6e2296f1 100644
--- a/drivers/iio/accel/adis16209.c
+++ b/drivers/iio/accel/adis16209.c
@@ -7,11 +7,8 @@
 
 #include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/list.h>
 #include <linux/module.h>
 #include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/imu/adis.h>
@@ -256,6 +253,7 @@ static const struct adis_data adis16209_data = {
 	.diag_stat_reg = ADIS16209_STAT_REG,
 
 	.self_test_mask = ADIS16209_MSC_CTRL_SELF_TEST_EN,
+	.self_test_reg = ADIS16209_MSC_CTRL_REG,
 	.self_test_no_autoclear = true,
 	.timeouts = &adis16209_timeouts,
 
@@ -278,10 +276,8 @@ static int adis16209_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);
-	spi_set_drvdata(spi, indio_dev);
 
 	indio_dev->name = spi->dev.driver->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16209_info;
 	indio_dev->channels = adis16209_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adis16209_channels);
@@ -291,33 +287,15 @@ static int adis16209_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = adis_setup_buffer_and_trigger(st, indio_dev, NULL);
+	ret = devm_adis_setup_buffer_and_trigger(st, indio_dev, NULL);
 	if (ret)
 		return ret;
 
 	ret = adis_initial_startup(st);
 	if (ret)
-		goto error_cleanup_buffer_trigger;
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_cleanup_buffer_trigger;
-
-	return 0;
-
-error_cleanup_buffer_trigger:
-	adis_cleanup_buffer_and_trigger(st, indio_dev);
-	return ret;
-}
-
-static int adis16209_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	adis_cleanup_buffer_and_trigger(st, indio_dev);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static struct spi_driver adis16209_driver = {
@@ -325,7 +303,6 @@ static struct spi_driver adis16209_driver = {
 		.name = "adis16209",
 	},
 	.probe = adis16209_probe,
-	.remove = adis16209_remove,
 };
 module_spi_driver(adis16209_driver);
 
@@ -333,3 +310,4 @@ MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 MODULE_DESCRIPTION("Analog Devices ADIS16209 Dual-Axis Digital Inclinometer and Accelerometer");
 MODULE_LICENSE("GPL v2");
 MODULE_ALIAS("spi:adis16209");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/accel/adxl313.h b/drivers/iio/accel/adxl313.h
new file mode 100644
index 000000000000..72f624af4686
--- /dev/null
+++ b/drivers/iio/accel/adxl313.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * ADXL313 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
+ */
+
+#ifndef _ADXL313_H_
+#define _ADXL313_H_
+
+#include <linux/iio/iio.h>
+
+/* ADXL313 register definitions */
+#define ADXL313_REG_DEVID0		0x00
+#define ADXL313_REG_DEVID1		0x01
+#define ADXL313_REG_PARTID		0x02
+#define ADXL313_REG_XID			0x04
+#define ADXL313_REG_SOFT_RESET		0x18
+#define ADXL313_REG_OFS_AXIS(index)	(0x1E + (index))
+#define ADXL313_REG_THRESH_ACT		0x24
+#define ADXL313_REG_ACT_INACT_CTL	0x27
+#define ADXL313_REG_BW_RATE		0x2C
+#define ADXL313_REG_POWER_CTL		0x2D
+#define ADXL313_REG_INT_MAP		0x2F
+#define ADXL313_REG_DATA_FORMAT		0x31
+#define ADXL313_REG_DATA_AXIS(index)	(0x32 + ((index) * 2))
+#define ADXL313_REG_FIFO_CTL		0x38
+#define ADXL313_REG_FIFO_STATUS		0x39
+
+#define ADXL313_DEVID0			0xAD
+#define ADXL313_DEVID0_ADXL312_314	0xE5
+#define ADXL313_DEVID1			0x1D
+#define ADXL313_PARTID			0xCB
+#define ADXL313_SOFT_RESET		0x52
+
+#define ADXL313_RATE_MSK		GENMASK(3, 0)
+#define ADXL313_RATE_BASE		6
+
+#define ADXL313_POWER_CTL_MSK		GENMASK(3, 2)
+#define ADXL313_MEASUREMENT_MODE	BIT(3)
+
+#define ADXL313_RANGE_MSK		GENMASK(1, 0)
+#define ADXL313_RANGE_MAX		3
+
+#define ADXL313_FULL_RES		BIT(3)
+#define ADXL313_SPI_3WIRE		BIT(6)
+#define ADXL313_I2C_DISABLE		BIT(6)
+
+extern const struct regmap_access_table adxl312_readable_regs_table;
+extern const struct regmap_access_table adxl313_readable_regs_table;
+extern const struct regmap_access_table adxl314_readable_regs_table;
+
+extern const struct regmap_access_table adxl312_writable_regs_table;
+extern const struct regmap_access_table adxl313_writable_regs_table;
+extern const struct regmap_access_table adxl314_writable_regs_table;
+
+enum adxl313_device_type {
+	ADXL312,
+	ADXL313,
+	ADXL314,
+};
+
+struct adxl313_data {
+	struct regmap	*regmap;
+	const struct adxl313_chip_info *chip_info;
+	struct mutex	lock; /* lock to protect transf_buf */
+	__le16		transf_buf __aligned(IIO_DMA_MINALIGN);
+};
+
+struct adxl313_chip_info {
+	const char			*name;
+	enum adxl313_device_type	type;
+	int				scale_factor;
+	bool				variable_range;
+	bool				soft_reset;
+	int (*check_id)(struct device *dev, struct adxl313_data *data);
+};
+
+extern const struct adxl313_chip_info adxl31x_chip_info[];
+
+int adxl313_core_probe(struct device *dev,
+		       struct regmap *regmap,
+		       const struct adxl313_chip_info *chip_info,
+		       int (*setup)(struct device *, struct regmap *));
+#endif /* _ADXL313_H_ */
diff --git a/drivers/iio/accel/adxl313_core.c b/drivers/iio/accel/adxl313_core.c
new file mode 100644
index 000000000000..4de0a41bd679
--- /dev/null
+++ b/drivers/iio/accel/adxl313_core.c
@@ -0,0 +1,424 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL313 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
+ *
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf
+ */
+
+#include <linux/bitfield.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "adxl313.h"
+
+static const struct regmap_range adxl312_readable_reg_range[] = {
+	regmap_reg_range(ADXL313_REG_DEVID0, ADXL313_REG_DEVID0),
+	regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
+	regmap_reg_range(ADXL313_REG_THRESH_ACT, ADXL313_REG_ACT_INACT_CTL),
+	regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_FIFO_STATUS),
+};
+
+static const struct regmap_range adxl313_readable_reg_range[] = {
+	regmap_reg_range(ADXL313_REG_DEVID0, ADXL313_REG_XID),
+	regmap_reg_range(ADXL313_REG_SOFT_RESET, ADXL313_REG_SOFT_RESET),
+	regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
+	regmap_reg_range(ADXL313_REG_THRESH_ACT, ADXL313_REG_ACT_INACT_CTL),
+	regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_FIFO_STATUS),
+};
+
+const struct regmap_access_table adxl312_readable_regs_table = {
+	.yes_ranges = adxl312_readable_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl312_readable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl312_readable_regs_table, IIO_ADXL313);
+
+const struct regmap_access_table adxl313_readable_regs_table = {
+	.yes_ranges = adxl313_readable_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl313_readable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl313_readable_regs_table, IIO_ADXL313);
+
+const struct regmap_access_table adxl314_readable_regs_table = {
+	.yes_ranges = adxl312_readable_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl312_readable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl314_readable_regs_table, IIO_ADXL313);
+
+static int adxl312_check_id(struct device *dev,
+			    struct adxl313_data *data)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, ADXL313_REG_DEVID0, &regval);
+	if (ret)
+		return ret;
+
+	if (regval != ADXL313_DEVID0_ADXL312_314)
+		dev_warn(dev, "Invalid manufacturer ID: %#02x\n", regval);
+
+	return 0;
+}
+
+static int adxl313_check_id(struct device *dev,
+			    struct adxl313_data *data)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, ADXL313_REG_DEVID0, &regval);
+	if (ret)
+		return ret;
+
+	if (regval != ADXL313_DEVID0)
+		dev_warn(dev, "Invalid manufacturer ID: 0x%02x\n", regval);
+
+	/* Check DEVID1 and PARTID */
+	if (regval == ADXL313_DEVID0) {
+		ret = regmap_read(data->regmap, ADXL313_REG_DEVID1, &regval);
+		if (ret)
+			return ret;
+
+		if (regval != ADXL313_DEVID1)
+			dev_warn(dev, "Invalid mems ID: 0x%02x\n", regval);
+
+		ret = regmap_read(data->regmap, ADXL313_REG_PARTID, &regval);
+		if (ret)
+			return ret;
+
+		if (regval != ADXL313_PARTID)
+			dev_warn(dev, "Invalid device ID: 0x%02x\n", regval);
+	}
+
+	return 0;
+}
+
+const struct adxl313_chip_info adxl31x_chip_info[] = {
+	[ADXL312] = {
+		.name = "adxl312",
+		.type = ADXL312,
+		.scale_factor = 28425072,
+		.variable_range = true,
+		.soft_reset = false,
+		.check_id = &adxl312_check_id,
+	},
+	[ADXL313] = {
+		.name = "adxl313",
+		.type = ADXL313,
+		.scale_factor = 9576806,
+		.variable_range = true,
+		.soft_reset = true,
+		.check_id = &adxl313_check_id,
+	},
+	[ADXL314] = {
+		.name = "adxl314",
+		.type = ADXL314,
+		.scale_factor = 478858719,
+		.variable_range = false,
+		.soft_reset = false,
+		.check_id = &adxl312_check_id,
+	},
+};
+EXPORT_SYMBOL_NS_GPL(adxl31x_chip_info, IIO_ADXL313);
+
+static const struct regmap_range adxl312_writable_reg_range[] = {
+	regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
+	regmap_reg_range(ADXL313_REG_THRESH_ACT, ADXL313_REG_ACT_INACT_CTL),
+	regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_INT_MAP),
+	regmap_reg_range(ADXL313_REG_DATA_FORMAT, ADXL313_REG_DATA_FORMAT),
+	regmap_reg_range(ADXL313_REG_FIFO_CTL, ADXL313_REG_FIFO_CTL),
+};
+
+static const struct regmap_range adxl313_writable_reg_range[] = {
+	regmap_reg_range(ADXL313_REG_SOFT_RESET, ADXL313_REG_SOFT_RESET),
+	regmap_reg_range(ADXL313_REG_OFS_AXIS(0), ADXL313_REG_OFS_AXIS(2)),
+	regmap_reg_range(ADXL313_REG_THRESH_ACT, ADXL313_REG_ACT_INACT_CTL),
+	regmap_reg_range(ADXL313_REG_BW_RATE, ADXL313_REG_INT_MAP),
+	regmap_reg_range(ADXL313_REG_DATA_FORMAT, ADXL313_REG_DATA_FORMAT),
+	regmap_reg_range(ADXL313_REG_FIFO_CTL, ADXL313_REG_FIFO_CTL),
+};
+
+const struct regmap_access_table adxl312_writable_regs_table = {
+	.yes_ranges = adxl312_writable_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl312_writable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl312_writable_regs_table, IIO_ADXL313);
+
+const struct regmap_access_table adxl313_writable_regs_table = {
+	.yes_ranges = adxl313_writable_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl313_writable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl313_writable_regs_table, IIO_ADXL313);
+
+const struct regmap_access_table adxl314_writable_regs_table = {
+	.yes_ranges = adxl312_writable_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl312_writable_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl314_writable_regs_table, IIO_ADXL313);
+
+static const int adxl313_odr_freqs[][2] = {
+	[0] = { 6, 250000 },
+	[1] = { 12, 500000 },
+	[2] = { 25, 0 },
+	[3] = { 50, 0 },
+	[4] = { 100, 0 },
+	[5] = { 200, 0 },
+	[6] = { 400, 0 },
+	[7] = { 800, 0 },
+	[8] = { 1600, 0 },
+	[9] = { 3200, 0 },
+};
+
+#define ADXL313_ACCEL_CHANNEL(index, axis) {				\
+	.type = IIO_ACCEL,						\
+	.address = index,						\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_CALIBBIAS),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
+				    BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+	.info_mask_shared_by_type_available =				\
+		BIT(IIO_CHAN_INFO_SAMP_FREQ),				\
+	.scan_type = {							\
+		.realbits = 13,						\
+	},								\
+}
+
+static const struct iio_chan_spec adxl313_channels[] = {
+	ADXL313_ACCEL_CHANNEL(0, X),
+	ADXL313_ACCEL_CHANNEL(1, Y),
+	ADXL313_ACCEL_CHANNEL(2, Z),
+};
+
+static int adxl313_set_odr(struct adxl313_data *data,
+			   unsigned int freq1, unsigned int freq2)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(adxl313_odr_freqs); i++) {
+		if (adxl313_odr_freqs[i][0] == freq1 &&
+		    adxl313_odr_freqs[i][1] == freq2)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(adxl313_odr_freqs))
+		return -EINVAL;
+
+	return regmap_update_bits(data->regmap, ADXL313_REG_BW_RATE,
+				  ADXL313_RATE_MSK,
+				  FIELD_PREP(ADXL313_RATE_MSK, ADXL313_RATE_BASE + i));
+}
+
+static int adxl313_read_axis(struct adxl313_data *data,
+			     struct iio_chan_spec const *chan)
+{
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	ret = regmap_bulk_read(data->regmap,
+			       ADXL313_REG_DATA_AXIS(chan->address),
+			       &data->transf_buf, sizeof(data->transf_buf));
+	if (ret)
+		goto unlock_ret;
+
+	ret = le16_to_cpu(data->transf_buf);
+
+unlock_ret:
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int adxl313_read_freq_avail(struct iio_dev *indio_dev,
+				   struct iio_chan_spec const *chan,
+				   const int **vals, int *type, int *length,
+				   long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (const int *)adxl313_odr_freqs;
+		*length = ARRAY_SIZE(adxl313_odr_freqs) * 2;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl313_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long mask)
+{
+	struct adxl313_data *data = iio_priv(indio_dev);
+	unsigned int regval;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = adxl313_read_axis(data, chan);
+		if (ret < 0)
+			return ret;
+
+		*val = sign_extend32(ret, chan->scan_type.realbits - 1);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 0;
+
+		*val2 = data->chip_info->scale_factor;
+
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = regmap_read(data->regmap,
+				  ADXL313_REG_OFS_AXIS(chan->address), &regval);
+		if (ret)
+			return ret;
+
+		/*
+		 * 8-bit resolution at minimum range, that is 4x accel data scale
+		 * factor at full resolution
+		 */
+		*val = sign_extend32(regval, 7) * 4;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = regmap_read(data->regmap, ADXL313_REG_BW_RATE, &regval);
+		if (ret)
+			return ret;
+
+		ret = FIELD_GET(ADXL313_RATE_MSK, regval) - ADXL313_RATE_BASE;
+		*val = adxl313_odr_freqs[ret][0];
+		*val2 = adxl313_odr_freqs[ret][1];
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl313_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct adxl313_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		/*
+		 * 8-bit resolution at minimum range, that is 4x accel data scale
+		 * factor at full resolution
+		 */
+		if (clamp_val(val, -128 * 4, 127 * 4) != val)
+			return -EINVAL;
+
+		return regmap_write(data->regmap,
+				    ADXL313_REG_OFS_AXIS(chan->address),
+				    val / 4);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return adxl313_set_odr(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info adxl313_info = {
+	.read_raw	= adxl313_read_raw,
+	.write_raw	= adxl313_write_raw,
+	.read_avail	= adxl313_read_freq_avail,
+};
+
+static int adxl313_setup(struct device *dev, struct adxl313_data *data,
+			 int (*setup)(struct device *, struct regmap *))
+{
+	int ret;
+
+	/*
+	 * If sw reset available, ensures the device is in a consistent
+	 * state after start up
+	 */
+	if (data->chip_info->soft_reset) {
+		ret = regmap_write(data->regmap, ADXL313_REG_SOFT_RESET,
+				   ADXL313_SOFT_RESET);
+		if (ret)
+			return ret;
+	}
+
+	if (setup) {
+		ret = setup(dev, data->regmap);
+		if (ret)
+			return ret;
+	}
+
+	ret = data->chip_info->check_id(dev, data);
+	if (ret)
+		return ret;
+
+	/* Sets the range to maximum, full resolution, if applicable */
+	if (data->chip_info->variable_range) {
+		ret = regmap_update_bits(data->regmap, ADXL313_REG_DATA_FORMAT,
+					 ADXL313_RANGE_MSK,
+					 FIELD_PREP(ADXL313_RANGE_MSK, ADXL313_RANGE_MAX));
+		if (ret)
+			return ret;
+
+		/* Enables full resolution */
+		ret = regmap_update_bits(data->regmap, ADXL313_REG_DATA_FORMAT,
+					 ADXL313_FULL_RES, ADXL313_FULL_RES);
+		if (ret)
+			return ret;
+	}
+
+	/* Enables measurement mode */
+	return regmap_update_bits(data->regmap, ADXL313_REG_POWER_CTL,
+				  ADXL313_POWER_CTL_MSK,
+				  ADXL313_MEASUREMENT_MODE);
+}
+
+/**
+ * adxl313_core_probe() - probe and setup for adxl313 accelerometer
+ * @dev:	Driver model representation of the device
+ * @regmap:	Register map of the device
+ * @chip_info:	Structure containing device specific data
+ * @setup:	Setup routine to be executed right before the standard device
+ *		setup, can also be set to NULL if not required
+ *
+ * Return: 0 on success, negative errno on error cases
+ */
+int adxl313_core_probe(struct device *dev,
+		       struct regmap *regmap,
+		       const struct adxl313_chip_info *chip_info,
+		       int (*setup)(struct device *, struct regmap *))
+{
+	struct adxl313_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->regmap = regmap;
+	data->chip_info = chip_info;
+
+	mutex_init(&data->lock);
+
+	indio_dev->name = chip_info->name;
+	indio_dev->info = &adxl313_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adxl313_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adxl313_channels);
+
+	ret = adxl313_setup(dev, data, setup);
+	if (ret) {
+		dev_err(dev, "ADXL313 setup failed\n");
+		return ret;
+	}
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_NS_GPL(adxl313_core_probe, IIO_ADXL313);
+
+MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>");
+MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer core driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/adxl313_i2c.c b/drivers/iio/accel/adxl313_i2c.c
new file mode 100644
index 000000000000..99cc7fc29488
--- /dev/null
+++ b/drivers/iio/accel/adxl313_i2c.c
@@ -0,0 +1,97 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL313 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
+ *
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf
+ */
+
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "adxl313.h"
+
+static const struct regmap_config adxl31x_i2c_regmap_config[] = {
+	[ADXL312] = {
+		.reg_bits	= 8,
+		.val_bits	= 8,
+		.rd_table	= &adxl312_readable_regs_table,
+		.wr_table	= &adxl312_writable_regs_table,
+		.max_register	= 0x39,
+	},
+	[ADXL313] = {
+		.reg_bits	= 8,
+		.val_bits	= 8,
+		.rd_table	= &adxl313_readable_regs_table,
+		.wr_table	= &adxl313_writable_regs_table,
+		.max_register	= 0x39,
+	},
+	[ADXL314] = {
+		.reg_bits	= 8,
+		.val_bits	= 8,
+		.rd_table	= &adxl314_readable_regs_table,
+		.wr_table	= &adxl314_writable_regs_table,
+		.max_register	= 0x39,
+	},
+};
+
+static const struct i2c_device_id adxl313_i2c_id[] = {
+	{ .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+	{ .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+	{ .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, adxl313_i2c_id);
+
+static const struct of_device_id adxl313_of_match[] = {
+	{ .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] },
+	{ .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] },
+	{ .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, adxl313_of_match);
+
+static int adxl313_i2c_probe(struct i2c_client *client)
+{
+	const struct adxl313_chip_info *chip_data;
+	struct regmap *regmap;
+
+	/*
+	 * Retrieves device specific data as a pointer to a
+	 * adxl313_chip_info structure
+	 */
+	chip_data = device_get_match_data(&client->dev);
+	if (!chip_data)
+		chip_data = (const struct adxl313_chip_info *)i2c_match_id(adxl313_i2c_id, client)->driver_data;
+
+	regmap = devm_regmap_init_i2c(client,
+				      &adxl31x_i2c_regmap_config[chip_data->type]);
+	if (IS_ERR(regmap)) {
+		dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
+			PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return adxl313_core_probe(&client->dev, regmap, chip_data, NULL);
+}
+
+static struct i2c_driver adxl313_i2c_driver = {
+	.driver = {
+		.name	= "adxl313_i2c",
+		.of_match_table = adxl313_of_match,
+	},
+	.probe_new	= adxl313_i2c_probe,
+	.id_table	= adxl313_i2c_id,
+};
+
+module_i2c_driver(adxl313_i2c_driver);
+
+MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>");
+MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer I2C driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL313);
diff --git a/drivers/iio/accel/adxl313_spi.c b/drivers/iio/accel/adxl313_spi.c
new file mode 100644
index 000000000000..b7cc15678a2b
--- /dev/null
+++ b/drivers/iio/accel/adxl313_spi.c
@@ -0,0 +1,128 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL313 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2021 Lucas Stankus <lucas.p.stankus@gmail.com>
+ *
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL313.pdf
+ */
+
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+#include <linux/property.h>
+
+#include "adxl313.h"
+
+static const struct regmap_config adxl31x_spi_regmap_config[] = {
+	[ADXL312] = {
+		.reg_bits	= 8,
+		.val_bits	= 8,
+		.rd_table	= &adxl312_readable_regs_table,
+		.wr_table	= &adxl312_writable_regs_table,
+		.max_register	= 0x39,
+		/* Setting bits 7 and 6 enables multiple-byte read */
+		.read_flag_mask	= BIT(7) | BIT(6),
+	},
+	[ADXL313] = {
+		.reg_bits	= 8,
+		.val_bits	= 8,
+		.rd_table	= &adxl313_readable_regs_table,
+		.wr_table	= &adxl313_writable_regs_table,
+		.max_register	= 0x39,
+		/* Setting bits 7 and 6 enables multiple-byte read */
+		.read_flag_mask	= BIT(7) | BIT(6),
+	},
+	[ADXL314] = {
+		.reg_bits	= 8,
+		.val_bits	= 8,
+		.rd_table	= &adxl314_readable_regs_table,
+		.wr_table	= &adxl314_writable_regs_table,
+		.max_register	= 0x39,
+		/* Setting bits 7 and 6 enables multiple-byte read */
+		.read_flag_mask	= BIT(7) | BIT(6),
+	},
+};
+
+static int adxl313_spi_setup(struct device *dev, struct regmap *regmap)
+{
+	struct spi_device *spi = container_of(dev, struct spi_device, dev);
+	int ret;
+
+	if (spi->mode & SPI_3WIRE) {
+		ret = regmap_write(regmap, ADXL313_REG_DATA_FORMAT,
+				   ADXL313_SPI_3WIRE);
+		if (ret)
+			return ret;
+	}
+
+	return regmap_update_bits(regmap, ADXL313_REG_POWER_CTL,
+				  ADXL313_I2C_DISABLE, ADXL313_I2C_DISABLE);
+}
+
+static int adxl313_spi_probe(struct spi_device *spi)
+{
+	const struct adxl313_chip_info *chip_data;
+	struct regmap *regmap;
+	int ret;
+
+	spi->mode |= SPI_MODE_3;
+	ret = spi_setup(spi);
+	if (ret)
+		return ret;
+
+	/*
+	 * Retrieves device specific data as a pointer to a
+	 * adxl313_chip_info structure
+	 */
+	chip_data = device_get_match_data(&spi->dev);
+	if (!chip_data)
+		chip_data = (const struct adxl313_chip_info *)spi_get_device_id(spi)->driver_data;
+
+	regmap = devm_regmap_init_spi(spi,
+				      &adxl31x_spi_regmap_config[chip_data->type]);
+
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
+			PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+
+	return adxl313_core_probe(&spi->dev, regmap,
+				  chip_data, &adxl313_spi_setup);
+}
+
+static const struct spi_device_id adxl313_spi_id[] = {
+	{ .name = "adxl312", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL312] },
+	{ .name = "adxl313", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL313] },
+	{ .name = "adxl314", .driver_data = (kernel_ulong_t)&adxl31x_chip_info[ADXL314] },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(spi, adxl313_spi_id);
+
+static const struct of_device_id adxl313_of_match[] = {
+	{ .compatible = "adi,adxl312", .data = &adxl31x_chip_info[ADXL312] },
+	{ .compatible = "adi,adxl313", .data = &adxl31x_chip_info[ADXL313] },
+	{ .compatible = "adi,adxl314", .data = &adxl31x_chip_info[ADXL314] },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, adxl313_of_match);
+
+static struct spi_driver adxl313_spi_driver = {
+	.driver = {
+		.name	= "adxl313_spi",
+		.of_match_table = adxl313_of_match,
+	},
+	.probe		= adxl313_spi_probe,
+	.id_table	= adxl313_spi_id,
+};
+
+module_spi_driver(adxl313_spi_driver);
+
+MODULE_AUTHOR("Lucas Stankus <lucas.p.stankus@gmail.com>");
+MODULE_DESCRIPTION("ADXL313 3-Axis Digital Accelerometer SPI driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL313);
diff --git a/drivers/iio/accel/adxl345.h b/drivers/iio/accel/adxl345.h
index 384497776b67..d7e67cb08538 100644
--- a/drivers/iio/accel/adxl345.h
+++ b/drivers/iio/accel/adxl345.h
@@ -9,12 +9,10 @@
 #define _ADXL345_H_
 
 enum adxl345_device_type {
-	ADXL345,
-	ADXL375,
+	ADXL345	= 1,
+	ADXL375 = 2,
 };
 
-int adxl345_core_probe(struct device *dev, struct regmap *regmap,
-		       enum adxl345_device_type type, const char *name);
-int adxl345_core_remove(struct device *dev);
+int adxl345_core_probe(struct device *dev, struct regmap *regmap);
 
 #endif /* _ADXL345_H_ */
diff --git a/drivers/iio/accel/adxl345_core.c b/drivers/iio/accel/adxl345_core.c
index 9c269799e6c1..1919e0089c11 100644
--- a/drivers/iio/accel/adxl345_core.c
+++ b/drivers/iio/accel/adxl345_core.c
@@ -4,11 +4,13 @@
  *
  * Copyright (c) 2017 Eva Rachel Retuya <eraretuya@gmail.com>
  *
- * Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/ADXL345.pdf
  */
 
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/units.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -31,7 +33,6 @@
 
 #define ADXL345_BW_RATE			GENMASK(3, 0)
 #define ADXL345_BASE_RATE_NANO_HZ	97656250LL
-#define NHZ_PER_HZ			1000000000LL
 
 #define ADXL345_POWER_CTL_MEASURE	BIT(3)
 #define ADXL345_POWER_CTL_STANDBY	0x00
@@ -138,7 +139,7 @@ static int adxl345_read_raw(struct iio_dev *indio_dev,
 
 		samp_freq_nhz = ADXL345_BASE_RATE_NANO_HZ <<
 				(regval & ADXL345_BW_RATE);
-		*val = div_s64_rem(samp_freq_nhz, NHZ_PER_HZ, val2);
+		*val = div_s64_rem(samp_freq_nhz, NANOHZ_PER_HZ, val2);
 
 		return IIO_VAL_INT_PLUS_NANO;
 	}
@@ -163,7 +164,8 @@ static int adxl345_write_raw(struct iio_dev *indio_dev,
 				    ADXL345_REG_OFS_AXIS(chan->address),
 				    val / 4);
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		n = div_s64(val * NHZ_PER_HZ + val2, ADXL345_BASE_RATE_NANO_HZ);
+		n = div_s64(val * NANOHZ_PER_HZ + val2,
+			    ADXL345_BASE_RATE_NANO_HZ);
 
 		return regmap_update_bits(data->regmap, ADXL345_REG_BW_RATE,
 					  ADXL345_BW_RATE,
@@ -194,7 +196,7 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
 
 static struct attribute *adxl345_attrs[] = {
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
-	NULL,
+	NULL
 };
 
 static const struct attribute_group adxl345_attrs_group = {
@@ -208,32 +210,50 @@ static const struct iio_info adxl345_info = {
 	.write_raw_get_fmt	= adxl345_write_raw_get_fmt,
 };
 
-int adxl345_core_probe(struct device *dev, struct regmap *regmap,
-		       enum adxl345_device_type type, const char *name)
+static int adxl345_powerup(void *regmap)
 {
+	return regmap_write(regmap, ADXL345_REG_POWER_CTL, ADXL345_POWER_CTL_MEASURE);
+}
+
+static void adxl345_powerdown(void *regmap)
+{
+	regmap_write(regmap, ADXL345_REG_POWER_CTL, ADXL345_POWER_CTL_STANDBY);
+}
+
+int adxl345_core_probe(struct device *dev, struct regmap *regmap)
+{
+	enum adxl345_device_type type;
 	struct adxl345_data *data;
 	struct iio_dev *indio_dev;
+	const char *name;
 	u32 regval;
 	int ret;
 
-	ret = regmap_read(regmap, ADXL345_REG_DEVID, &regval);
-	if (ret < 0) {
-		dev_err(dev, "Error reading device ID: %d\n", ret);
-		return ret;
+	type = (uintptr_t)device_get_match_data(dev);
+	switch (type) {
+	case ADXL345:
+		name = "adxl345";
+		break;
+	case ADXL375:
+		name = "adxl375";
+		break;
+	default:
+		return -EINVAL;
 	}
 
-	if (regval != ADXL345_DEVID) {
-		dev_err(dev, "Invalid device ID: %x, expected %x\n",
-			regval, ADXL345_DEVID);
-		return -ENODEV;
-	}
+	ret = regmap_read(regmap, ADXL345_REG_DEVID, &regval);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Error reading device ID\n");
+
+	if (regval != ADXL345_DEVID)
+		return dev_err_probe(dev, -ENODEV, "Invalid device ID: %x, expected %x\n",
+				     regval, ADXL345_DEVID);
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	data = iio_priv(indio_dev);
-	dev_set_drvdata(dev, indio_dev);
 	data->regmap = regmap;
 	data->type = type;
 	/* Enable full-resolution mode */
@@ -241,12 +261,9 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap,
 
 	ret = regmap_write(data->regmap, ADXL345_REG_DATA_FORMAT,
 			   data->data_range);
-	if (ret < 0) {
-		dev_err(dev, "Failed to set data range: %d\n", ret);
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Failed to set data range\n");
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &adxl345_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -254,35 +271,17 @@ int adxl345_core_probe(struct device *dev, struct regmap *regmap,
 	indio_dev->num_channels = ARRAY_SIZE(adxl345_channels);
 
 	/* Enable measurement mode */
-	ret = regmap_write(data->regmap, ADXL345_REG_POWER_CTL,
-			   ADXL345_POWER_CTL_MEASURE);
-	if (ret < 0) {
-		dev_err(dev, "Failed to enable measurement mode: %d\n", ret);
-		return ret;
-	}
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(dev, "iio_device_register failed: %d\n", ret);
-		regmap_write(data->regmap, ADXL345_REG_POWER_CTL,
-			     ADXL345_POWER_CTL_STANDBY);
-	}
+	ret = adxl345_powerup(data->regmap);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Failed to enable measurement mode\n");
 
-	return ret;
-}
-EXPORT_SYMBOL_GPL(adxl345_core_probe);
-
-int adxl345_core_remove(struct device *dev)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct adxl345_data *data = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
+	ret = devm_add_action_or_reset(dev, adxl345_powerdown, data->regmap);
+	if (ret < 0)
+		return ret;
 
-	return regmap_write(data->regmap, ADXL345_REG_POWER_CTL,
-			    ADXL345_POWER_CTL_STANDBY);
+	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(adxl345_core_remove);
+EXPORT_SYMBOL_NS_GPL(adxl345_core_probe, IIO_ADXL345);
 
 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer core driver");
diff --git a/drivers/iio/accel/adxl345_i2c.c b/drivers/iio/accel/adxl345_i2c.c
index 1561364ae296..098cd83f95b2 100644
--- a/drivers/iio/accel/adxl345_i2c.c
+++ b/drivers/iio/accel/adxl345_i2c.c
@@ -19,28 +19,15 @@ static const struct regmap_config adxl345_i2c_regmap_config = {
 	.val_bits = 8,
 };
 
-static int adxl345_i2c_probe(struct i2c_client *client,
-			     const struct i2c_device_id *id)
+static int adxl345_i2c_probe(struct i2c_client *client)
 {
 	struct regmap *regmap;
 
-	if (!id)
-		return -ENODEV;
-
 	regmap = devm_regmap_init_i2c(client, &adxl345_i2c_regmap_config);
-	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
-			PTR_ERR(regmap));
-		return PTR_ERR(regmap);
-	}
-
-	return adxl345_core_probe(&client->dev, regmap, id->driver_data,
-				  id->name);
-}
+	if (IS_ERR(regmap))
+		return dev_err_probe(&client->dev, PTR_ERR(regmap), "Error initializing regmap\n");
 
-static int adxl345_i2c_remove(struct i2c_client *client)
-{
-	return adxl345_core_remove(&client->dev);
+	return adxl345_core_probe(&client->dev, regmap);
 }
 
 static const struct i2c_device_id adxl345_i2c_id[] = {
@@ -48,29 +35,33 @@ static const struct i2c_device_id adxl345_i2c_id[] = {
 	{ "adxl375", ADXL375 },
 	{ }
 };
-
 MODULE_DEVICE_TABLE(i2c, adxl345_i2c_id);
 
 static const struct of_device_id adxl345_of_match[] = {
-	{ .compatible = "adi,adxl345" },
-	{ .compatible = "adi,adxl375" },
-	{ },
+	{ .compatible = "adi,adxl345", .data = (const void *)ADXL345 },
+	{ .compatible = "adi,adxl375", .data = (const void *)ADXL375 },
+	{ }
 };
-
 MODULE_DEVICE_TABLE(of, adxl345_of_match);
 
+static const struct acpi_device_id adxl345_acpi_match[] = {
+	{ "ADS0345", ADXL345 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adxl345_acpi_match);
+
 static struct i2c_driver adxl345_i2c_driver = {
 	.driver = {
 		.name	= "adxl345_i2c",
 		.of_match_table = adxl345_of_match,
+		.acpi_match_table = adxl345_acpi_match,
 	},
-	.probe		= adxl345_i2c_probe,
-	.remove		= adxl345_i2c_remove,
+	.probe_new	= adxl345_i2c_probe,
 	.id_table	= adxl345_i2c_id,
 };
-
 module_i2c_driver(adxl345_i2c_driver);
 
 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer I2C driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL345);
diff --git a/drivers/iio/accel/adxl345_spi.c b/drivers/iio/accel/adxl345_spi.c
index da4591c7ef23..aaade5808657 100644
--- a/drivers/iio/accel/adxl345_spi.c
+++ b/drivers/iio/accel/adxl345_spi.c
@@ -22,29 +22,18 @@ static const struct regmap_config adxl345_spi_regmap_config = {
 
 static int adxl345_spi_probe(struct spi_device *spi)
 {
-	const struct spi_device_id *id = spi_get_device_id(spi);
 	struct regmap *regmap;
 
 	/* Bail out if max_speed_hz exceeds 5 MHz */
-	if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ) {
-		dev_err(&spi->dev, "SPI CLK, %d Hz exceeds 5 MHz\n",
-			spi->max_speed_hz);
-		return -EINVAL;
-	}
+	if (spi->max_speed_hz > ADXL345_MAX_SPI_FREQ_HZ)
+		return dev_err_probe(&spi->dev, -EINVAL, "SPI CLK, %d Hz exceeds 5 MHz\n",
+				     spi->max_speed_hz);
 
 	regmap = devm_regmap_init_spi(spi, &adxl345_spi_regmap_config);
-	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
-			PTR_ERR(regmap));
-		return PTR_ERR(regmap);
-	}
+	if (IS_ERR(regmap))
+		return dev_err_probe(&spi->dev, PTR_ERR(regmap), "Error initializing regmap\n");
 
-	return adxl345_core_probe(&spi->dev, regmap, id->driver_data, id->name);
-}
-
-static int adxl345_spi_remove(struct spi_device *spi)
-{
-	return adxl345_core_remove(&spi->dev);
+	return adxl345_core_probe(&spi->dev, regmap);
 }
 
 static const struct spi_device_id adxl345_spi_id[] = {
@@ -52,29 +41,33 @@ static const struct spi_device_id adxl345_spi_id[] = {
 	{ "adxl375", ADXL375 },
 	{ }
 };
-
 MODULE_DEVICE_TABLE(spi, adxl345_spi_id);
 
 static const struct of_device_id adxl345_of_match[] = {
-	{ .compatible = "adi,adxl345" },
-	{ .compatible = "adi,adxl375" },
-	{ },
+	{ .compatible = "adi,adxl345", .data = (const void *)ADXL345 },
+	{ .compatible = "adi,adxl375", .data = (const void *)ADXL375 },
+	{ }
 };
-
 MODULE_DEVICE_TABLE(of, adxl345_of_match);
 
+static const struct acpi_device_id adxl345_acpi_match[] = {
+	{ "ADS0345", ADXL345 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, adxl345_acpi_match);
+
 static struct spi_driver adxl345_spi_driver = {
 	.driver = {
 		.name	= "adxl345_spi",
 		.of_match_table = adxl345_of_match,
+		.acpi_match_table = adxl345_acpi_match,
 	},
 	.probe		= adxl345_spi_probe,
-	.remove		= adxl345_spi_remove,
 	.id_table	= adxl345_spi_id,
 };
-
 module_spi_driver(adxl345_spi_driver);
 
 MODULE_AUTHOR("Eva Rachel Retuya <eraretuya@gmail.com>");
 MODULE_DESCRIPTION("ADXL345 3-Axis Digital Accelerometer SPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL345);
diff --git a/drivers/iio/accel/adxl355.h b/drivers/iio/accel/adxl355.h
new file mode 100644
index 000000000000..6dd49b13e4fd
--- /dev/null
+++ b/drivers/iio/accel/adxl355.h
@@ -0,0 +1,21 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * ADXL355 3-Axis Digital Accelerometer
+ *
+ * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
+ */
+
+#ifndef _ADXL355_H_
+#define _ADXL355_H_
+
+#include <linux/regmap.h>
+
+struct device;
+
+extern const struct regmap_access_table adxl355_readable_regs_tbl;
+extern const struct regmap_access_table adxl355_writeable_regs_tbl;
+
+int adxl355_core_probe(struct device *dev, struct regmap *regmap,
+		       const char *name);
+
+#endif /* _ADXL355_H_ */
diff --git a/drivers/iio/accel/adxl355_core.c b/drivers/iio/accel/adxl355_core.c
new file mode 100644
index 000000000000..4bc648eac8b2
--- /dev/null
+++ b/drivers/iio/accel/adxl355_core.c
@@ -0,0 +1,761 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL355 3-Axis Digital Accelerometer IIO core driver
+ *
+ * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
+ *
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/adxl354_adxl355.pdf
+ */
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/limits.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+#include "adxl355.h"
+
+/* ADXL355 Register Definitions */
+#define ADXL355_DEVID_AD_REG		0x00
+#define ADXL355_DEVID_MST_REG		0x01
+#define ADXL355_PARTID_REG		0x02
+#define ADXL355_STATUS_REG		0x04
+#define ADXL355_FIFO_ENTRIES_REG	0x05
+#define ADXL355_TEMP2_REG		0x06
+#define ADXL355_XDATA3_REG		0x08
+#define ADXL355_YDATA3_REG		0x0B
+#define ADXL355_ZDATA3_REG		0x0E
+#define ADXL355_FIFO_DATA_REG		0x11
+#define ADXL355_OFFSET_X_H_REG		0x1E
+#define ADXL355_OFFSET_Y_H_REG		0x20
+#define ADXL355_OFFSET_Z_H_REG		0x22
+#define ADXL355_ACT_EN_REG		0x24
+#define ADXL355_ACT_THRESH_H_REG	0x25
+#define ADXL355_ACT_THRESH_L_REG	0x26
+#define ADXL355_ACT_COUNT_REG		0x27
+#define ADXL355_FILTER_REG		0x28
+#define  ADXL355_FILTER_ODR_MSK GENMASK(3, 0)
+#define  ADXL355_FILTER_HPF_MSK	GENMASK(6, 4)
+#define ADXL355_FIFO_SAMPLES_REG	0x29
+#define ADXL355_INT_MAP_REG		0x2A
+#define ADXL355_SYNC_REG		0x2B
+#define ADXL355_RANGE_REG		0x2C
+#define ADXL355_POWER_CTL_REG		0x2D
+#define  ADXL355_POWER_CTL_MODE_MSK	GENMASK(1, 0)
+#define  ADXL355_POWER_CTL_DRDY_MSK	BIT(2)
+#define ADXL355_SELF_TEST_REG		0x2E
+#define ADXL355_RESET_REG		0x2F
+
+#define ADXL355_DEVID_AD_VAL		0xAD
+#define ADXL355_DEVID_MST_VAL		0x1D
+#define ADXL355_PARTID_VAL		0xED
+#define ADXL355_RESET_CODE		0x52
+
+static const struct regmap_range adxl355_read_reg_range[] = {
+	regmap_reg_range(ADXL355_DEVID_AD_REG, ADXL355_FIFO_DATA_REG),
+	regmap_reg_range(ADXL355_OFFSET_X_H_REG, ADXL355_SELF_TEST_REG),
+};
+
+const struct regmap_access_table adxl355_readable_regs_tbl = {
+	.yes_ranges = adxl355_read_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl355_read_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl355_readable_regs_tbl, IIO_ADXL355);
+
+static const struct regmap_range adxl355_write_reg_range[] = {
+	regmap_reg_range(ADXL355_OFFSET_X_H_REG, ADXL355_RESET_REG),
+};
+
+const struct regmap_access_table adxl355_writeable_regs_tbl = {
+	.yes_ranges = adxl355_write_reg_range,
+	.n_yes_ranges = ARRAY_SIZE(adxl355_write_reg_range),
+};
+EXPORT_SYMBOL_NS_GPL(adxl355_writeable_regs_tbl, IIO_ADXL355);
+
+enum adxl355_op_mode {
+	ADXL355_MEASUREMENT,
+	ADXL355_STANDBY,
+	ADXL355_TEMP_OFF,
+};
+
+enum adxl355_odr {
+	ADXL355_ODR_4000HZ,
+	ADXL355_ODR_2000HZ,
+	ADXL355_ODR_1000HZ,
+	ADXL355_ODR_500HZ,
+	ADXL355_ODR_250HZ,
+	ADXL355_ODR_125HZ,
+	ADXL355_ODR_62_5HZ,
+	ADXL355_ODR_31_25HZ,
+	ADXL355_ODR_15_625HZ,
+	ADXL355_ODR_7_813HZ,
+	ADXL355_ODR_3_906HZ,
+};
+
+enum adxl355_hpf_3db {
+	ADXL355_HPF_OFF,
+	ADXL355_HPF_24_7,
+	ADXL355_HPF_6_2084,
+	ADXL355_HPF_1_5545,
+	ADXL355_HPF_0_3862,
+	ADXL355_HPF_0_0954,
+	ADXL355_HPF_0_0238,
+};
+
+static const int adxl355_odr_table[][2] = {
+	[0] = {4000, 0},
+	[1] = {2000, 0},
+	[2] = {1000, 0},
+	[3] = {500, 0},
+	[4] = {250, 0},
+	[5] = {125, 0},
+	[6] = {62, 500000},
+	[7] = {31, 250000},
+	[8] = {15, 625000},
+	[9] = {7, 813000},
+	[10] = {3, 906000},
+};
+
+static const int adxl355_hpf_3db_multipliers[] = {
+	0,
+	247000,
+	62084,
+	15545,
+	3862,
+	954,
+	238,
+};
+
+enum adxl355_chans {
+	chan_x, chan_y, chan_z,
+};
+
+struct adxl355_chan_info {
+	u8 data_reg;
+	u8 offset_reg;
+};
+
+static const struct adxl355_chan_info adxl355_chans[] = {
+	[chan_x] = {
+		.data_reg = ADXL355_XDATA3_REG,
+		.offset_reg = ADXL355_OFFSET_X_H_REG
+	},
+	[chan_y] = {
+		.data_reg = ADXL355_YDATA3_REG,
+		.offset_reg = ADXL355_OFFSET_Y_H_REG
+	},
+	[chan_z] = {
+		.data_reg = ADXL355_ZDATA3_REG,
+		.offset_reg = ADXL355_OFFSET_Z_H_REG
+	},
+};
+
+struct adxl355_data {
+	struct regmap *regmap;
+	struct device *dev;
+	struct mutex lock; /* lock to protect op_mode */
+	enum adxl355_op_mode op_mode;
+	enum adxl355_odr odr;
+	enum adxl355_hpf_3db hpf_3db;
+	int calibbias[3];
+	int adxl355_hpf_3db_table[7][2];
+	struct iio_trigger *dready_trig;
+	union {
+		u8 transf_buf[3];
+		struct {
+			u8 buf[14];
+			s64 ts;
+		} buffer;
+	} __aligned(IIO_DMA_MINALIGN);
+};
+
+static int adxl355_set_op_mode(struct adxl355_data *data,
+			       enum adxl355_op_mode op_mode)
+{
+	int ret;
+
+	if (data->op_mode == op_mode)
+		return 0;
+
+	ret = regmap_update_bits(data->regmap, ADXL355_POWER_CTL_REG,
+				 ADXL355_POWER_CTL_MODE_MSK, op_mode);
+	if (ret)
+		return ret;
+
+	data->op_mode = op_mode;
+
+	return ret;
+}
+
+static int adxl355_data_rdy_trigger_set_state(struct iio_trigger *trig,
+					      bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct adxl355_data *data = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&data->lock);
+	ret = regmap_update_bits(data->regmap, ADXL355_POWER_CTL_REG,
+				 ADXL355_POWER_CTL_DRDY_MSK,
+				 FIELD_PREP(ADXL355_POWER_CTL_DRDY_MSK,
+					    state ? 0 : 1));
+	mutex_unlock(&data->lock);
+
+	return ret;
+}
+
+static void adxl355_fill_3db_frequency_table(struct adxl355_data *data)
+{
+	u32 multiplier;
+	u64 div, rem;
+	u64 odr;
+	int i;
+
+	odr = mul_u64_u32_shr(adxl355_odr_table[data->odr][0], MEGA, 0) +
+			      adxl355_odr_table[data->odr][1];
+
+	for (i = 0; i < ARRAY_SIZE(adxl355_hpf_3db_multipliers); i++) {
+		multiplier = adxl355_hpf_3db_multipliers[i];
+		div = div64_u64_rem(mul_u64_u32_shr(odr, multiplier, 0),
+				    TERA * 100, &rem);
+
+		data->adxl355_hpf_3db_table[i][0] = div;
+		data->adxl355_hpf_3db_table[i][1] = div_u64(rem, MEGA * 100);
+	}
+}
+
+static int adxl355_setup(struct adxl355_data *data)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, ADXL355_DEVID_AD_REG, &regval);
+	if (ret)
+		return ret;
+
+	if (regval != ADXL355_DEVID_AD_VAL) {
+		dev_err(data->dev, "Invalid ADI ID 0x%02x\n", regval);
+		return -ENODEV;
+	}
+
+	ret = regmap_read(data->regmap, ADXL355_DEVID_MST_REG, &regval);
+	if (ret)
+		return ret;
+
+	if (regval != ADXL355_DEVID_MST_VAL) {
+		dev_err(data->dev, "Invalid MEMS ID 0x%02x\n", regval);
+		return -ENODEV;
+	}
+
+	ret = regmap_read(data->regmap, ADXL355_PARTID_REG, &regval);
+	if (ret)
+		return ret;
+
+	if (regval != ADXL355_PARTID_VAL) {
+		dev_err(data->dev, "Invalid DEV ID 0x%02x\n", regval);
+		return -ENODEV;
+	}
+
+	/*
+	 * Perform a software reset to make sure the device is in a consistent
+	 * state after start-up.
+	 */
+	ret = regmap_write(data->regmap, ADXL355_RESET_REG, ADXL355_RESET_CODE);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(data->regmap, ADXL355_POWER_CTL_REG,
+				 ADXL355_POWER_CTL_DRDY_MSK,
+				 FIELD_PREP(ADXL355_POWER_CTL_DRDY_MSK, 1));
+	if (ret)
+		return ret;
+
+	adxl355_fill_3db_frequency_table(data);
+
+	return adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+}
+
+static int adxl355_get_temp_data(struct adxl355_data *data, u8 addr)
+{
+	return regmap_bulk_read(data->regmap, addr, data->transf_buf, 2);
+}
+
+static int adxl355_read_axis(struct adxl355_data *data, u8 addr)
+{
+	int ret;
+
+	ret = regmap_bulk_read(data->regmap, addr, data->transf_buf,
+			       ARRAY_SIZE(data->transf_buf));
+	if (ret)
+		return ret;
+
+	return get_unaligned_be24(data->transf_buf);
+}
+
+static int adxl355_find_match(const int (*freq_tbl)[2], const int n,
+			      const int val, const int val2)
+{
+	int i;
+
+	for (i = 0; i < n; i++) {
+		if (freq_tbl[i][0] == val && freq_tbl[i][1] == val2)
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+static int adxl355_set_odr(struct adxl355_data *data,
+			   enum adxl355_odr odr)
+{
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	if (data->odr == odr) {
+		mutex_unlock(&data->lock);
+		return 0;
+	}
+
+	ret = adxl355_set_op_mode(data, ADXL355_STANDBY);
+	if (ret)
+		goto err_unlock;
+
+	ret = regmap_update_bits(data->regmap, ADXL355_FILTER_REG,
+				 ADXL355_FILTER_ODR_MSK,
+				 FIELD_PREP(ADXL355_FILTER_ODR_MSK, odr));
+	if (ret)
+		goto err_set_opmode;
+
+	data->odr = odr;
+	adxl355_fill_3db_frequency_table(data);
+
+	ret = adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+	if (ret)
+		goto err_set_opmode;
+
+	mutex_unlock(&data->lock);
+	return 0;
+
+err_set_opmode:
+	adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+err_unlock:
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int adxl355_set_hpf_3db(struct adxl355_data *data,
+			       enum adxl355_hpf_3db hpf)
+{
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	if (data->hpf_3db == hpf) {
+		mutex_unlock(&data->lock);
+		return 0;
+	}
+
+	ret = adxl355_set_op_mode(data, ADXL355_STANDBY);
+	if (ret)
+		goto err_unlock;
+
+	ret = regmap_update_bits(data->regmap, ADXL355_FILTER_REG,
+				 ADXL355_FILTER_HPF_MSK,
+				 FIELD_PREP(ADXL355_FILTER_HPF_MSK, hpf));
+	if (ret)
+		goto err_set_opmode;
+
+	data->hpf_3db = hpf;
+
+	ret = adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+	if (ret)
+		goto err_set_opmode;
+
+	mutex_unlock(&data->lock);
+	return 0;
+
+err_set_opmode:
+	adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+err_unlock:
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int adxl355_set_calibbias(struct adxl355_data *data,
+				 enum adxl355_chans chan, int calibbias)
+{
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	ret = adxl355_set_op_mode(data, ADXL355_STANDBY);
+	if (ret)
+		goto err_unlock;
+
+	put_unaligned_be16(calibbias, data->transf_buf);
+	ret = regmap_bulk_write(data->regmap,
+				adxl355_chans[chan].offset_reg,
+				data->transf_buf, 2);
+	if (ret)
+		goto err_set_opmode;
+
+	data->calibbias[chan] = calibbias;
+
+	ret = adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+	if (ret)
+		goto err_set_opmode;
+
+	mutex_unlock(&data->lock);
+	return 0;
+
+err_set_opmode:
+	adxl355_set_op_mode(data, ADXL355_MEASUREMENT);
+err_unlock:
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int adxl355_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long mask)
+{
+	struct adxl355_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_TEMP:
+			ret = adxl355_get_temp_data(data, chan->address);
+			if (ret < 0)
+				return ret;
+			*val = get_unaligned_be16(data->transf_buf);
+
+			return IIO_VAL_INT;
+		case IIO_ACCEL:
+			ret = adxl355_read_axis(data, adxl355_chans[
+						chan->address].data_reg);
+			if (ret < 0)
+				return ret;
+			*val = sign_extend32(ret >> chan->scan_type.shift,
+					     chan->scan_type.realbits - 1);
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		/*
+		 * The datasheet defines an intercept of 1885 LSB at 25 degC
+		 * and a slope of -9.05 LSB/C. The following formula can be used
+		 * to find the temperature:
+		 * Temp = ((RAW - 1885)/(-9.05)) + 25 but this doesn't follow
+		 * the format of the IIO which is Temp = (RAW + OFFSET) * SCALE.
+		 * Hence using some rearranging we get the scale as -110.497238
+		 * and offset as -2111.25.
+		 */
+		case IIO_TEMP:
+			*val = -110;
+			*val2 = 497238;
+			return IIO_VAL_INT_PLUS_MICRO;
+		/*
+		 * At +/- 2g with 20-bit resolution, scale is given in datasheet
+		 * as 3.9ug/LSB = 0.0000039 * 9.80665 = 0.00003824593 m/s^2.
+		 */
+		case IIO_ACCEL:
+			*val = 0;
+			*val2 = 38245;
+			return IIO_VAL_INT_PLUS_NANO;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		*val = -2111;
+		*val2 = 250000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		*val = sign_extend32(data->calibbias[chan->address], 15);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = adxl355_odr_table[data->odr][0];
+		*val2 = adxl355_odr_table[data->odr][1];
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		*val = data->adxl355_hpf_3db_table[data->hpf_3db][0];
+		*val2 = data->adxl355_hpf_3db_table[data->hpf_3db][1];
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl355_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct adxl355_data *data = iio_priv(indio_dev);
+	int odr_idx, hpf_idx, calibbias;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		odr_idx = adxl355_find_match(adxl355_odr_table,
+					     ARRAY_SIZE(adxl355_odr_table),
+					     val, val2);
+		if (odr_idx < 0)
+			return odr_idx;
+
+		return adxl355_set_odr(data, odr_idx);
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		hpf_idx = adxl355_find_match(data->adxl355_hpf_3db_table,
+					ARRAY_SIZE(data->adxl355_hpf_3db_table),
+					     val, val2);
+		if (hpf_idx < 0)
+			return hpf_idx;
+
+		return adxl355_set_hpf_3db(data, hpf_idx);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		calibbias = clamp_t(int, val, S16_MIN, S16_MAX);
+
+		return adxl355_set_calibbias(data, chan->address, calibbias);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl355_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long mask)
+{
+	struct adxl355_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (const int *)adxl355_odr_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* Values are stored in a 2D matrix */
+		*length = ARRAY_SIZE(adxl355_odr_table) * 2;
+
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		*vals = (const int *)data->adxl355_hpf_3db_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* Values are stored in a 2D matrix */
+		*length = ARRAY_SIZE(data->adxl355_hpf_3db_table) * 2;
+
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const unsigned long adxl355_avail_scan_masks[] = {
+	GENMASK(3, 0),
+	0
+};
+
+static const struct iio_info adxl355_info = {
+	.read_raw	= adxl355_read_raw,
+	.write_raw	= adxl355_write_raw,
+	.read_avail	= &adxl355_read_avail,
+};
+
+static const struct iio_trigger_ops adxl355_trigger_ops = {
+	.set_trigger_state = &adxl355_data_rdy_trigger_set_state,
+	.validate_device = &iio_trigger_validate_own_device,
+};
+
+static irqreturn_t adxl355_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct adxl355_data *data = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&data->lock);
+
+	/*
+	 * data->buffer is used both for triggered buffer support
+	 * and read/write_raw(), hence, it has to be zeroed here before usage.
+	 */
+	data->buffer.buf[0] = 0;
+
+	/*
+	 * The acceleration data is 24 bits and big endian. It has to be saved
+	 * in 32 bits, hence, it is saved in the 2nd byte of the 4 byte buffer.
+	 * The buf array is 14 bytes as it includes 3x4=12 bytes for
+	 * accelaration data of x, y, and z axis. It also includes 2 bytes for
+	 * temperature data.
+	 */
+	ret = regmap_bulk_read(data->regmap, ADXL355_XDATA3_REG,
+			       &data->buffer.buf[1], 3);
+	if (ret)
+		goto out_unlock_notify;
+
+	ret = regmap_bulk_read(data->regmap, ADXL355_YDATA3_REG,
+			       &data->buffer.buf[5], 3);
+	if (ret)
+		goto out_unlock_notify;
+
+	ret = regmap_bulk_read(data->regmap, ADXL355_ZDATA3_REG,
+			       &data->buffer.buf[9], 3);
+	if (ret)
+		goto out_unlock_notify;
+
+	ret = regmap_bulk_read(data->regmap, ADXL355_TEMP2_REG,
+			       &data->buffer.buf[12], 2);
+	if (ret)
+		goto out_unlock_notify;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,
+					   pf->timestamp);
+
+out_unlock_notify:
+	mutex_unlock(&data->lock);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+#define ADXL355_ACCEL_CHANNEL(index, reg, axis) {			\
+	.type = IIO_ACCEL,						\
+	.address = reg,							\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_CALIBBIAS),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
+				    BIT(IIO_CHAN_INFO_SAMP_FREQ) |	\
+		BIT(IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY),	\
+	.info_mask_shared_by_type_available =				\
+		BIT(IIO_CHAN_INFO_SAMP_FREQ) |				\
+		BIT(IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY),	\
+	.scan_index = index,						\
+	.scan_type = {							\
+		.sign = 's',						\
+		.realbits = 20,						\
+		.storagebits = 32,					\
+		.shift = 4,						\
+		.endianness = IIO_BE,					\
+	}								\
+}
+
+static const struct iio_chan_spec adxl355_channels[] = {
+	ADXL355_ACCEL_CHANNEL(0, chan_x, X),
+	ADXL355_ACCEL_CHANNEL(1, chan_y, Y),
+	ADXL355_ACCEL_CHANNEL(2, chan_z, Z),
+	{
+		.type = IIO_TEMP,
+		.address = ADXL355_TEMP2_REG,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OFFSET),
+		.scan_index = 3,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 12,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+static int adxl355_probe_trigger(struct iio_dev *indio_dev, int irq)
+{
+	struct adxl355_data *data = iio_priv(indio_dev);
+	int ret;
+
+	data->dready_trig = devm_iio_trigger_alloc(data->dev, "%s-dev%d",
+						   indio_dev->name,
+						   iio_device_id(indio_dev));
+	if (!data->dready_trig)
+		return -ENOMEM;
+
+	data->dready_trig->ops = &adxl355_trigger_ops;
+	iio_trigger_set_drvdata(data->dready_trig, indio_dev);
+
+	ret = devm_request_irq(data->dev, irq,
+			       &iio_trigger_generic_data_rdy_poll,
+			       IRQF_ONESHOT, "adxl355_irq", data->dready_trig);
+	if (ret)
+		return dev_err_probe(data->dev, ret, "request irq %d failed\n",
+				     irq);
+
+	ret = devm_iio_trigger_register(data->dev, data->dready_trig);
+	if (ret) {
+		dev_err(data->dev, "iio trigger register failed\n");
+		return ret;
+	}
+
+	indio_dev->trig = iio_trigger_get(data->dready_trig);
+
+	return 0;
+}
+
+int adxl355_core_probe(struct device *dev, struct regmap *regmap,
+		       const char *name)
+{
+	struct adxl355_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+	int irq;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->regmap = regmap;
+	data->dev = dev;
+	data->op_mode = ADXL355_STANDBY;
+	mutex_init(&data->lock);
+
+	indio_dev->name = name;
+	indio_dev->info = &adxl355_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adxl355_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adxl355_channels);
+	indio_dev->available_scan_masks = adxl355_avail_scan_masks;
+
+	ret = adxl355_setup(data);
+	if (ret) {
+		dev_err(dev, "ADXL355 setup failed\n");
+		return ret;
+	}
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      &adxl355_trigger_handler, NULL);
+	if (ret) {
+		dev_err(dev, "iio triggered buffer setup failed\n");
+		return ret;
+	}
+
+	irq = fwnode_irq_get_byname(dev_fwnode(dev), "DRDY");
+	if (irq > 0) {
+		ret = adxl355_probe_trigger(indio_dev, irq);
+		if (ret)
+			return ret;
+	}
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_NS_GPL(adxl355_core_probe, IIO_ADXL355);
+
+MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
+MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer core driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/adxl355_i2c.c b/drivers/iio/accel/adxl355_i2c.c
new file mode 100644
index 000000000000..f67d57921c81
--- /dev/null
+++ b/drivers/iio/accel/adxl355_i2c.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL355 3-Axis Digital Accelerometer I2C driver
+ *
+ * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regmap.h>
+
+#include "adxl355.h"
+
+static const struct regmap_config adxl355_i2c_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = 0x2F,
+	.rd_table = &adxl355_readable_regs_tbl,
+	.wr_table = &adxl355_writeable_regs_tbl,
+};
+
+static int adxl355_i2c_probe(struct i2c_client *client)
+{
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i2c(client, &adxl355_i2c_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&client->dev, "Error initializing i2c regmap: %ld\n",
+			PTR_ERR(regmap));
+
+		return PTR_ERR(regmap);
+	}
+
+	return adxl355_core_probe(&client->dev, regmap, client->name);
+}
+
+static const struct i2c_device_id adxl355_i2c_id[] = {
+	{ "adxl355", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, adxl355_i2c_id);
+
+static const struct of_device_id adxl355_of_match[] = {
+	{ .compatible = "adi,adxl355" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, adxl355_of_match);
+
+static struct i2c_driver adxl355_i2c_driver = {
+	.driver = {
+		.name	= "adxl355_i2c",
+		.of_match_table = adxl355_of_match,
+	},
+	.probe_new	= adxl355_i2c_probe,
+	.id_table	= adxl355_i2c_id,
+};
+module_i2c_driver(adxl355_i2c_driver);
+
+MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
+MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer I2C driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL355);
diff --git a/drivers/iio/accel/adxl355_spi.c b/drivers/iio/accel/adxl355_spi.c
new file mode 100644
index 000000000000..5fe986ae03f6
--- /dev/null
+++ b/drivers/iio/accel/adxl355_spi.c
@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADXL355 3-Axis Digital Accelerometer SPI driver
+ *
+ * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
+ */
+
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "adxl355.h"
+
+static const struct regmap_config adxl355_spi_regmap_config = {
+	.reg_bits = 7,
+	.pad_bits = 1,
+	.val_bits = 8,
+	.read_flag_mask = BIT(0),
+	.max_register = 0x2F,
+	.rd_table = &adxl355_readable_regs_tbl,
+	.wr_table = &adxl355_writeable_regs_tbl,
+};
+
+static int adxl355_spi_probe(struct spi_device *spi)
+{
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_spi(spi, &adxl355_spi_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
+			PTR_ERR(regmap));
+
+		return PTR_ERR(regmap);
+	}
+
+	return adxl355_core_probe(&spi->dev, regmap, id->name);
+}
+
+static const struct spi_device_id adxl355_spi_id[] = {
+	{ "adxl355", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, adxl355_spi_id);
+
+static const struct of_device_id adxl355_of_match[] = {
+	{ .compatible = "adi,adxl355" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, adxl355_of_match);
+
+static struct spi_driver adxl355_spi_driver = {
+	.driver = {
+		.name	= "adxl355_spi",
+		.of_match_table = adxl355_of_match,
+	},
+	.probe		= adxl355_spi_probe,
+	.id_table	= adxl355_spi_id,
+};
+module_spi_driver(adxl355_spi_driver);
+
+MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
+MODULE_DESCRIPTION("ADXL355 3-Axis Digital Accelerometer SPI driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADXL355);
diff --git a/drivers/iio/accel/adxl367.c b/drivers/iio/accel/adxl367.c
new file mode 100644
index 000000000000..7c7d78040793
--- /dev/null
+++ b/drivers/iio/accel/adxl367.c
@@ -0,0 +1,1572 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Analog Devices, Inc.
+ * Author: Cosmin Tanislav <cosmin.tanislav@analog.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <asm/unaligned.h>
+
+#include "adxl367.h"
+
+#define ADXL367_REG_DEVID		0x00
+#define ADXL367_DEVID_AD		0xAD
+
+#define ADXL367_REG_STATUS		0x0B
+#define ADXL367_STATUS_INACT_MASK	BIT(5)
+#define ADXL367_STATUS_ACT_MASK		BIT(4)
+#define ADXL367_STATUS_FIFO_FULL_MASK	BIT(2)
+
+#define ADXL367_FIFO_ENT_H_MASK		GENMASK(1, 0)
+
+#define ADXL367_REG_X_DATA_H		0x0E
+#define ADXL367_REG_Y_DATA_H		0x10
+#define ADXL367_REG_Z_DATA_H		0x12
+#define ADXL367_REG_TEMP_DATA_H		0x14
+#define ADXL367_REG_EX_ADC_DATA_H	0x16
+#define ADXL367_DATA_MASK		GENMASK(15, 2)
+
+#define ADXL367_TEMP_25C		165
+#define ADXL367_TEMP_PER_C		54
+
+#define ADXL367_VOLTAGE_OFFSET		8192
+#define ADXL367_VOLTAGE_MAX_MV		1000
+#define ADXL367_VOLTAGE_MAX_RAW		GENMASK(13, 0)
+
+#define ADXL367_REG_RESET		0x1F
+#define ADXL367_RESET_CODE		0x52
+
+#define ADXL367_REG_THRESH_ACT_H	0x20
+#define ADXL367_REG_THRESH_INACT_H	0x23
+#define ADXL367_THRESH_MAX		GENMASK(12, 0)
+#define ADXL367_THRESH_VAL_H_MASK	GENMASK(12, 6)
+#define ADXL367_THRESH_H_MASK		GENMASK(6, 0)
+#define ADXL367_THRESH_VAL_L_MASK	GENMASK(5, 0)
+#define ADXL367_THRESH_L_MASK		GENMASK(7, 2)
+
+#define ADXL367_REG_TIME_ACT		0x22
+#define ADXL367_REG_TIME_INACT_H	0x25
+#define ADXL367_TIME_ACT_MAX		GENMASK(7, 0)
+#define ADXL367_TIME_INACT_MAX		GENMASK(15, 0)
+#define ADXL367_TIME_INACT_VAL_H_MASK	GENMASK(15, 8)
+#define ADXL367_TIME_INACT_H_MASK	GENMASK(7, 0)
+#define ADXL367_TIME_INACT_VAL_L_MASK	GENMASK(7, 0)
+#define ADXL367_TIME_INACT_L_MASK	GENMASK(7, 0)
+
+#define ADXL367_REG_ACT_INACT_CTL	0x27
+#define ADXL367_ACT_EN_MASK		GENMASK(1, 0)
+#define ADXL367_ACT_LINKLOOP_MASK	GENMASK(5, 4)
+
+#define ADXL367_REG_FIFO_CTL		0x28
+#define ADXL367_FIFO_CTL_FORMAT_MASK	GENMASK(6, 3)
+#define ADXL367_FIFO_CTL_MODE_MASK	GENMASK(1, 0)
+
+#define ADXL367_REG_FIFO_SAMPLES	0x29
+#define ADXL367_FIFO_SIZE		512
+#define ADXL367_FIFO_MAX_WATERMARK	511
+
+#define ADXL367_SAMPLES_VAL_H_MASK	BIT(8)
+#define ADXL367_SAMPLES_H_MASK		BIT(2)
+#define ADXL367_SAMPLES_VAL_L_MASK	GENMASK(7, 0)
+#define ADXL367_SAMPLES_L_MASK		GENMASK(7, 0)
+
+#define ADXL367_REG_INT1_MAP		0x2A
+#define ADXL367_INT_INACT_MASK		BIT(5)
+#define ADXL367_INT_ACT_MASK		BIT(4)
+#define ADXL367_INT_FIFO_WATERMARK_MASK	BIT(2)
+
+#define ADXL367_REG_FILTER_CTL		0x2C
+#define ADXL367_FILTER_CTL_RANGE_MASK	GENMASK(7, 6)
+#define ADXL367_2G_RANGE_1G		4095
+#define ADXL367_2G_RANGE_100MG		409
+#define ADXL367_FILTER_CTL_ODR_MASK	GENMASK(2, 0)
+
+#define ADXL367_REG_POWER_CTL		0x2D
+#define ADXL367_POWER_CTL_MODE_MASK	GENMASK(1, 0)
+
+#define ADXL367_REG_ADC_CTL		0x3C
+#define ADXL367_REG_TEMP_CTL		0x3D
+#define ADXL367_ADC_EN_MASK		BIT(0)
+
+enum adxl367_range {
+	ADXL367_2G_RANGE,
+	ADXL367_4G_RANGE,
+	ADXL367_8G_RANGE,
+};
+
+enum adxl367_fifo_mode {
+	ADXL367_FIFO_MODE_DISABLED = 0b00,
+	ADXL367_FIFO_MODE_STREAM = 0b10,
+};
+
+enum adxl367_fifo_format {
+	ADXL367_FIFO_FORMAT_XYZ,
+	ADXL367_FIFO_FORMAT_X,
+	ADXL367_FIFO_FORMAT_Y,
+	ADXL367_FIFO_FORMAT_Z,
+	ADXL367_FIFO_FORMAT_XYZT,
+	ADXL367_FIFO_FORMAT_XT,
+	ADXL367_FIFO_FORMAT_YT,
+	ADXL367_FIFO_FORMAT_ZT,
+	ADXL367_FIFO_FORMAT_XYZA,
+	ADXL367_FIFO_FORMAT_XA,
+	ADXL367_FIFO_FORMAT_YA,
+	ADXL367_FIFO_FORMAT_ZA,
+};
+
+enum adxl367_op_mode {
+	ADXL367_OP_STANDBY = 0b00,
+	ADXL367_OP_MEASURE = 0b10,
+};
+
+enum adxl367_act_proc_mode {
+	ADXL367_LOOPED = 0b11,
+};
+
+enum adxl367_act_en_mode {
+	ADXL367_ACT_DISABLED = 0b00,
+	ADCL367_ACT_REF_ENABLED = 0b11,
+};
+
+enum adxl367_activity_type {
+	ADXL367_ACTIVITY,
+	ADXL367_INACTIVITY,
+};
+
+enum adxl367_odr {
+	ADXL367_ODR_12P5HZ,
+	ADXL367_ODR_25HZ,
+	ADXL367_ODR_50HZ,
+	ADXL367_ODR_100HZ,
+	ADXL367_ODR_200HZ,
+	ADXL367_ODR_400HZ,
+};
+
+struct adxl367_state {
+	const struct adxl367_ops	*ops;
+	void				*context;
+
+	struct device			*dev;
+	struct regmap			*regmap;
+
+	struct regulator_bulk_data	regulators[2];
+
+	/*
+	 * Synchronize access to members of driver state, and ensure atomicity
+	 * of consecutive regmap operations.
+	 */
+	struct mutex		lock;
+
+	enum adxl367_odr	odr;
+	enum adxl367_range	range;
+
+	unsigned int	act_threshold;
+	unsigned int	act_time_ms;
+	unsigned int	inact_threshold;
+	unsigned int	inact_time_ms;
+
+	unsigned int	fifo_set_size;
+	unsigned int	fifo_watermark;
+
+	__be16		fifo_buf[ADXL367_FIFO_SIZE] __aligned(IIO_DMA_MINALIGN);
+	__be16		sample_buf;
+	u8		act_threshold_buf[2];
+	u8		inact_time_buf[2];
+	u8		status_buf[3];
+};
+
+static const unsigned int adxl367_threshold_h_reg_tbl[] = {
+	[ADXL367_ACTIVITY]   = ADXL367_REG_THRESH_ACT_H,
+	[ADXL367_INACTIVITY] = ADXL367_REG_THRESH_INACT_H,
+};
+
+static const unsigned int adxl367_act_en_shift_tbl[] = {
+	[ADXL367_ACTIVITY]   = 0,
+	[ADXL367_INACTIVITY] = 2,
+};
+
+static const unsigned int adxl367_act_int_mask_tbl[] = {
+	[ADXL367_ACTIVITY]   = ADXL367_INT_ACT_MASK,
+	[ADXL367_INACTIVITY] = ADXL367_INT_INACT_MASK,
+};
+
+static const int adxl367_samp_freq_tbl[][2] = {
+	[ADXL367_ODR_12P5HZ] = {12, 500000},
+	[ADXL367_ODR_25HZ]   = {25, 0},
+	[ADXL367_ODR_50HZ]   = {50, 0},
+	[ADXL367_ODR_100HZ]  = {100, 0},
+	[ADXL367_ODR_200HZ]  = {200, 0},
+	[ADXL367_ODR_400HZ]  = {400, 0},
+};
+
+/* (g * 2) * 9.80665 * 1000000 / (2^14 - 1) */
+static const int adxl367_range_scale_tbl[][2] = {
+	[ADXL367_2G_RANGE] = {0, 2394347},
+	[ADXL367_4G_RANGE] = {0, 4788695},
+	[ADXL367_8G_RANGE] = {0, 9577391},
+};
+
+static const int adxl367_range_scale_factor_tbl[] = {
+	[ADXL367_2G_RANGE] = 1,
+	[ADXL367_4G_RANGE] = 2,
+	[ADXL367_8G_RANGE] = 4,
+};
+
+enum {
+	ADXL367_X_CHANNEL_INDEX,
+	ADXL367_Y_CHANNEL_INDEX,
+	ADXL367_Z_CHANNEL_INDEX,
+	ADXL367_TEMP_CHANNEL_INDEX,
+	ADXL367_EX_ADC_CHANNEL_INDEX
+};
+
+#define ADXL367_X_CHANNEL_MASK		BIT(ADXL367_X_CHANNEL_INDEX)
+#define ADXL367_Y_CHANNEL_MASK		BIT(ADXL367_Y_CHANNEL_INDEX)
+#define ADXL367_Z_CHANNEL_MASK		BIT(ADXL367_Z_CHANNEL_INDEX)
+#define ADXL367_TEMP_CHANNEL_MASK	BIT(ADXL367_TEMP_CHANNEL_INDEX)
+#define ADXL367_EX_ADC_CHANNEL_MASK	BIT(ADXL367_EX_ADC_CHANNEL_INDEX)
+
+static const enum adxl367_fifo_format adxl367_fifo_formats[] = {
+	ADXL367_FIFO_FORMAT_X,
+	ADXL367_FIFO_FORMAT_Y,
+	ADXL367_FIFO_FORMAT_Z,
+	ADXL367_FIFO_FORMAT_XT,
+	ADXL367_FIFO_FORMAT_YT,
+	ADXL367_FIFO_FORMAT_ZT,
+	ADXL367_FIFO_FORMAT_XA,
+	ADXL367_FIFO_FORMAT_YA,
+	ADXL367_FIFO_FORMAT_ZA,
+	ADXL367_FIFO_FORMAT_XYZ,
+	ADXL367_FIFO_FORMAT_XYZT,
+	ADXL367_FIFO_FORMAT_XYZA,
+};
+
+static const unsigned long adxl367_channel_masks[] = {
+	ADXL367_X_CHANNEL_MASK,
+	ADXL367_Y_CHANNEL_MASK,
+	ADXL367_Z_CHANNEL_MASK,
+	ADXL367_X_CHANNEL_MASK | ADXL367_TEMP_CHANNEL_MASK,
+	ADXL367_Y_CHANNEL_MASK | ADXL367_TEMP_CHANNEL_MASK,
+	ADXL367_Z_CHANNEL_MASK | ADXL367_TEMP_CHANNEL_MASK,
+	ADXL367_X_CHANNEL_MASK | ADXL367_EX_ADC_CHANNEL_MASK,
+	ADXL367_Y_CHANNEL_MASK | ADXL367_EX_ADC_CHANNEL_MASK,
+	ADXL367_Z_CHANNEL_MASK | ADXL367_EX_ADC_CHANNEL_MASK,
+	ADXL367_X_CHANNEL_MASK | ADXL367_Y_CHANNEL_MASK | ADXL367_Z_CHANNEL_MASK,
+	ADXL367_X_CHANNEL_MASK | ADXL367_Y_CHANNEL_MASK | ADXL367_Z_CHANNEL_MASK |
+		ADXL367_TEMP_CHANNEL_MASK,
+	ADXL367_X_CHANNEL_MASK | ADXL367_Y_CHANNEL_MASK | ADXL367_Z_CHANNEL_MASK |
+		ADXL367_EX_ADC_CHANNEL_MASK,
+	0,
+};
+
+static int adxl367_set_measure_en(struct adxl367_state *st, bool en)
+{
+	enum adxl367_op_mode op_mode = en ? ADXL367_OP_MEASURE
+					  : ADXL367_OP_STANDBY;
+	int ret;
+
+	ret = regmap_update_bits(st->regmap, ADXL367_REG_POWER_CTL,
+				 ADXL367_POWER_CTL_MODE_MASK,
+				 FIELD_PREP(ADXL367_POWER_CTL_MODE_MASK,
+					    op_mode));
+	if (ret)
+		return ret;
+
+	/*
+	 * Wait for acceleration output to settle after entering
+	 * measure mode.
+	 */
+	if (en)
+		msleep(100);
+
+	return 0;
+}
+
+static void adxl367_scale_act_thresholds(struct adxl367_state *st,
+					 enum adxl367_range old_range,
+					 enum adxl367_range new_range)
+{
+	st->act_threshold = st->act_threshold
+			    * adxl367_range_scale_factor_tbl[old_range]
+			    / adxl367_range_scale_factor_tbl[new_range];
+	st->inact_threshold = st->inact_threshold
+			      * adxl367_range_scale_factor_tbl[old_range]
+			      / adxl367_range_scale_factor_tbl[new_range];
+}
+
+static int _adxl367_set_act_threshold(struct adxl367_state *st,
+				      enum adxl367_activity_type act,
+				      unsigned int threshold)
+{
+	u8 reg = adxl367_threshold_h_reg_tbl[act];
+	int ret;
+
+	if (threshold > ADXL367_THRESH_MAX)
+		return -EINVAL;
+
+	st->act_threshold_buf[0] = FIELD_PREP(ADXL367_THRESH_H_MASK,
+					      FIELD_GET(ADXL367_THRESH_VAL_H_MASK,
+							threshold));
+	st->act_threshold_buf[1] = FIELD_PREP(ADXL367_THRESH_L_MASK,
+					      FIELD_GET(ADXL367_THRESH_VAL_L_MASK,
+							threshold));
+
+	ret = regmap_bulk_write(st->regmap, reg, st->act_threshold_buf,
+				sizeof(st->act_threshold_buf));
+	if (ret)
+		return ret;
+
+	if (act == ADXL367_ACTIVITY)
+		st->act_threshold = threshold;
+	else
+		st->inact_threshold = threshold;
+
+	return 0;
+}
+
+static int adxl367_set_act_threshold(struct adxl367_state *st,
+				     enum adxl367_activity_type act,
+				     unsigned int threshold)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = _adxl367_set_act_threshold(st, act, threshold);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int adxl367_set_act_proc_mode(struct adxl367_state *st,
+				     enum adxl367_act_proc_mode mode)
+{
+	return regmap_update_bits(st->regmap, ADXL367_REG_ACT_INACT_CTL,
+				  ADXL367_ACT_LINKLOOP_MASK,
+				  FIELD_PREP(ADXL367_ACT_LINKLOOP_MASK,
+					     mode));
+}
+
+static int adxl367_set_act_interrupt_en(struct adxl367_state *st,
+					enum adxl367_activity_type act,
+					bool en)
+{
+	unsigned int mask = adxl367_act_int_mask_tbl[act];
+
+	return regmap_update_bits(st->regmap, ADXL367_REG_INT1_MAP,
+				  mask, en ? mask : 0);
+}
+
+static int adxl367_get_act_interrupt_en(struct adxl367_state *st,
+					enum adxl367_activity_type act,
+					bool *en)
+{
+	unsigned int mask = adxl367_act_int_mask_tbl[act];
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(st->regmap, ADXL367_REG_INT1_MAP, &val);
+	if (ret)
+		return ret;
+
+	*en = !!(val & mask);
+
+	return 0;
+}
+
+static int adxl367_set_act_en(struct adxl367_state *st,
+			      enum adxl367_activity_type act,
+			      enum adxl367_act_en_mode en)
+{
+	unsigned int ctl_shift = adxl367_act_en_shift_tbl[act];
+
+	return regmap_update_bits(st->regmap, ADXL367_REG_ACT_INACT_CTL,
+				  ADXL367_ACT_EN_MASK << ctl_shift,
+				  en << ctl_shift);
+}
+
+static int adxl367_set_fifo_watermark_interrupt_en(struct adxl367_state *st,
+						   bool en)
+{
+	return regmap_update_bits(st->regmap, ADXL367_REG_INT1_MAP,
+				  ADXL367_INT_FIFO_WATERMARK_MASK,
+				  en ? ADXL367_INT_FIFO_WATERMARK_MASK : 0);
+}
+
+static int adxl367_get_fifo_mode(struct adxl367_state *st,
+				 enum adxl367_fifo_mode *fifo_mode)
+{
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(st->regmap, ADXL367_REG_FIFO_CTL, &val);
+	if (ret)
+		return ret;
+
+	*fifo_mode = FIELD_GET(ADXL367_FIFO_CTL_MODE_MASK, val);
+
+	return 0;
+}
+
+static int adxl367_set_fifo_mode(struct adxl367_state *st,
+				 enum adxl367_fifo_mode fifo_mode)
+{
+	return regmap_update_bits(st->regmap, ADXL367_REG_FIFO_CTL,
+				  ADXL367_FIFO_CTL_MODE_MASK,
+				  FIELD_PREP(ADXL367_FIFO_CTL_MODE_MASK,
+					     fifo_mode));
+}
+
+static int adxl367_set_fifo_format(struct adxl367_state *st,
+				   enum adxl367_fifo_format fifo_format)
+{
+	return regmap_update_bits(st->regmap, ADXL367_REG_FIFO_CTL,
+				  ADXL367_FIFO_CTL_FORMAT_MASK,
+				  FIELD_PREP(ADXL367_FIFO_CTL_FORMAT_MASK,
+					     fifo_format));
+}
+
+static int adxl367_set_fifo_watermark(struct adxl367_state *st,
+				      unsigned int fifo_watermark)
+{
+	unsigned int fifo_samples = fifo_watermark * st->fifo_set_size;
+	unsigned int fifo_samples_h, fifo_samples_l;
+	int ret;
+
+	if (fifo_samples > ADXL367_FIFO_MAX_WATERMARK)
+		fifo_samples = ADXL367_FIFO_MAX_WATERMARK;
+
+	fifo_samples /= st->fifo_set_size;
+
+	fifo_samples_h = FIELD_PREP(ADXL367_SAMPLES_H_MASK,
+				    FIELD_GET(ADXL367_SAMPLES_VAL_H_MASK,
+					      fifo_samples));
+	fifo_samples_l = FIELD_PREP(ADXL367_SAMPLES_L_MASK,
+				    FIELD_GET(ADXL367_SAMPLES_VAL_L_MASK,
+					      fifo_samples));
+
+	ret = regmap_update_bits(st->regmap, ADXL367_REG_FIFO_CTL,
+				 ADXL367_SAMPLES_H_MASK, fifo_samples_h);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(st->regmap, ADXL367_REG_FIFO_SAMPLES,
+				 ADXL367_SAMPLES_L_MASK, fifo_samples_l);
+	if (ret)
+		return ret;
+
+	st->fifo_watermark = fifo_watermark;
+
+	return 0;
+}
+
+static int adxl367_set_range(struct iio_dev *indio_dev,
+			     enum adxl367_range range)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = regmap_update_bits(st->regmap, ADXL367_REG_FILTER_CTL,
+				 ADXL367_FILTER_CTL_RANGE_MASK,
+				 FIELD_PREP(ADXL367_FILTER_CTL_RANGE_MASK,
+					    range));
+	if (ret)
+		goto out;
+
+	adxl367_scale_act_thresholds(st, st->range, range);
+
+	/* Activity thresholds depend on range */
+	ret = _adxl367_set_act_threshold(st, ADXL367_ACTIVITY,
+					 st->act_threshold);
+	if (ret)
+		goto out;
+
+	ret = _adxl367_set_act_threshold(st, ADXL367_INACTIVITY,
+					 st->inact_threshold);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+	if (ret)
+		goto out;
+
+	st->range = range;
+
+out:
+	mutex_unlock(&st->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static int adxl367_time_ms_to_samples(struct adxl367_state *st, unsigned int ms)
+{
+	int freq_hz = adxl367_samp_freq_tbl[st->odr][0];
+	int freq_microhz = adxl367_samp_freq_tbl[st->odr][1];
+	/* Scale to decihertz to prevent precision loss in 12.5Hz case. */
+	int freq_dhz = freq_hz * 10 + freq_microhz / 100000;
+
+	return DIV_ROUND_CLOSEST(ms * freq_dhz, 10000);
+}
+
+static int _adxl367_set_act_time_ms(struct adxl367_state *st, unsigned int ms)
+{
+	unsigned int val = adxl367_time_ms_to_samples(st, ms);
+	int ret;
+
+	if (val > ADXL367_TIME_ACT_MAX)
+		val = ADXL367_TIME_ACT_MAX;
+
+	ret = regmap_write(st->regmap, ADXL367_REG_TIME_ACT, val);
+	if (ret)
+		return ret;
+
+	st->act_time_ms = ms;
+
+	return 0;
+}
+
+static int _adxl367_set_inact_time_ms(struct adxl367_state *st, unsigned int ms)
+{
+	unsigned int val = adxl367_time_ms_to_samples(st, ms);
+	int ret;
+
+	if (val > ADXL367_TIME_INACT_MAX)
+		val = ADXL367_TIME_INACT_MAX;
+
+	st->inact_time_buf[0] = FIELD_PREP(ADXL367_TIME_INACT_H_MASK,
+					   FIELD_GET(ADXL367_TIME_INACT_VAL_H_MASK,
+						     val));
+	st->inact_time_buf[1] = FIELD_PREP(ADXL367_TIME_INACT_L_MASK,
+					   FIELD_GET(ADXL367_TIME_INACT_VAL_L_MASK,
+						     val));
+
+	ret = regmap_bulk_write(st->regmap, ADXL367_REG_TIME_INACT_H,
+				st->inact_time_buf, sizeof(st->inact_time_buf));
+	if (ret)
+		return ret;
+
+	st->inact_time_ms = ms;
+
+	return 0;
+}
+
+static int adxl367_set_act_time_ms(struct adxl367_state *st,
+				   enum adxl367_activity_type act,
+				   unsigned int ms)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	if (act == ADXL367_ACTIVITY)
+		ret = _adxl367_set_act_time_ms(st, ms);
+	else
+		ret = _adxl367_set_inact_time_ms(st, ms);
+
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int _adxl367_set_odr(struct adxl367_state *st, enum adxl367_odr odr)
+{
+	int ret;
+
+	ret = regmap_update_bits(st->regmap, ADXL367_REG_FILTER_CTL,
+				 ADXL367_FILTER_CTL_ODR_MASK,
+				 FIELD_PREP(ADXL367_FILTER_CTL_ODR_MASK,
+					    odr));
+	if (ret)
+		return ret;
+
+	/* Activity timers depend on ODR */
+	ret = _adxl367_set_act_time_ms(st, st->act_time_ms);
+	if (ret)
+		return ret;
+
+	ret = _adxl367_set_inact_time_ms(st, st->inact_time_ms);
+	if (ret)
+		return ret;
+
+	st->odr = odr;
+
+	return 0;
+}
+
+static int adxl367_set_odr(struct iio_dev *indio_dev, enum adxl367_odr odr)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = _adxl367_set_odr(st, odr);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+
+out:
+	mutex_unlock(&st->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static int adxl367_set_temp_adc_en(struct adxl367_state *st, unsigned int reg,
+				   bool en)
+{
+	return regmap_update_bits(st->regmap, reg, ADXL367_ADC_EN_MASK,
+				  en ? ADXL367_ADC_EN_MASK : 0);
+}
+
+static int adxl367_set_temp_adc_reg_en(struct adxl367_state *st,
+				       unsigned int reg, bool en)
+{
+	int ret;
+
+	switch (reg) {
+	case ADXL367_REG_TEMP_DATA_H:
+		ret = adxl367_set_temp_adc_en(st, ADXL367_REG_TEMP_CTL, en);
+		break;
+	case ADXL367_REG_EX_ADC_DATA_H:
+		ret = adxl367_set_temp_adc_en(st, ADXL367_REG_ADC_CTL, en);
+		break;
+	default:
+		return 0;
+	}
+
+	if (ret)
+		return ret;
+
+	if (en)
+		msleep(100);
+
+	return 0;
+}
+
+static int adxl367_set_temp_adc_mask_en(struct adxl367_state *st,
+					const unsigned long *active_scan_mask,
+					bool en)
+{
+	if (*active_scan_mask & ADXL367_TEMP_CHANNEL_MASK)
+		return adxl367_set_temp_adc_en(st, ADXL367_REG_TEMP_CTL, en);
+	else if (*active_scan_mask & ADXL367_EX_ADC_CHANNEL_MASK)
+		return adxl367_set_temp_adc_en(st, ADXL367_REG_ADC_CTL, en);
+
+	return 0;
+}
+
+static int adxl367_find_odr(struct adxl367_state *st, int val, int val2,
+			    enum adxl367_odr *odr)
+{
+	size_t size = ARRAY_SIZE(adxl367_samp_freq_tbl);
+	int i;
+
+	for (i = 0; i < size; i++)
+		if (val == adxl367_samp_freq_tbl[i][0] &&
+		    val2 == adxl367_samp_freq_tbl[i][1])
+			break;
+
+	if (i == size)
+		return -EINVAL;
+
+	*odr = i;
+
+	return 0;
+}
+
+static int adxl367_find_range(struct adxl367_state *st, int val, int val2,
+			      enum adxl367_range *range)
+{
+	size_t size = ARRAY_SIZE(adxl367_range_scale_tbl);
+	int i;
+
+	for (i = 0; i < size; i++)
+		if (val == adxl367_range_scale_tbl[i][0] &&
+		    val2 == adxl367_range_scale_tbl[i][1])
+			break;
+
+	if (i == size)
+		return -EINVAL;
+
+	*range = i;
+
+	return 0;
+}
+
+static int adxl367_read_sample(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	u16 sample;
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_temp_adc_reg_en(st, chan->address, true);
+	if (ret)
+		goto out;
+
+	ret = regmap_bulk_read(st->regmap, chan->address, &st->sample_buf,
+			       sizeof(st->sample_buf));
+	if (ret)
+		goto out;
+
+	sample = FIELD_GET(ADXL367_DATA_MASK, be16_to_cpu(st->sample_buf));
+	*val = sign_extend32(sample, chan->scan_type.realbits - 1);
+
+	ret = adxl367_set_temp_adc_reg_en(st, chan->address, false);
+
+out:
+	mutex_unlock(&st->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret ?: IIO_VAL_INT;
+}
+
+static int adxl367_get_status(struct adxl367_state *st, u8 *status,
+			      u16 *fifo_entries)
+{
+	int ret;
+
+	/* Read STATUS, FIFO_ENT_L and FIFO_ENT_H */
+	ret = regmap_bulk_read(st->regmap, ADXL367_REG_STATUS,
+			       st->status_buf, sizeof(st->status_buf));
+	if (ret)
+		return ret;
+
+	st->status_buf[2] &= ADXL367_FIFO_ENT_H_MASK;
+
+	*status = st->status_buf[0];
+	*fifo_entries = get_unaligned_le16(&st->status_buf[1]);
+
+	return 0;
+}
+
+static bool adxl367_push_event(struct iio_dev *indio_dev, u8 status)
+{
+	unsigned int ev_dir;
+
+	if (FIELD_GET(ADXL367_STATUS_ACT_MASK, status))
+		ev_dir = IIO_EV_DIR_RISING;
+	else if (FIELD_GET(ADXL367_STATUS_INACT_MASK, status))
+		ev_dir = IIO_EV_DIR_FALLING;
+	else
+		return false;
+
+	iio_push_event(indio_dev,
+		       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X_OR_Y_OR_Z,
+					  IIO_EV_TYPE_THRESH, ev_dir),
+		       iio_get_time_ns(indio_dev));
+
+	return true;
+}
+
+static bool adxl367_push_fifo_data(struct iio_dev *indio_dev, u8 status,
+				   u16 fifo_entries)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	int ret;
+	int i;
+
+	if (!FIELD_GET(ADXL367_STATUS_FIFO_FULL_MASK, status))
+		return false;
+
+	fifo_entries -= fifo_entries % st->fifo_set_size;
+
+	ret = st->ops->read_fifo(st->context, st->fifo_buf, fifo_entries);
+	if (ret) {
+		dev_err(st->dev, "Failed to read FIFO: %d\n", ret);
+		return true;
+	}
+
+	for (i = 0; i < fifo_entries; i += st->fifo_set_size)
+		iio_push_to_buffers(indio_dev, &st->fifo_buf[i]);
+
+	return true;
+}
+
+static irqreturn_t adxl367_irq_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct adxl367_state *st = iio_priv(indio_dev);
+	u16 fifo_entries;
+	bool handled;
+	u8 status;
+	int ret;
+
+	ret = adxl367_get_status(st, &status, &fifo_entries);
+	if (ret)
+		return IRQ_NONE;
+
+	handled = adxl367_push_event(indio_dev, status);
+	handled |= adxl367_push_fifo_data(indio_dev, status, fifo_entries);
+
+	return handled ? IRQ_HANDLED : IRQ_NONE;
+}
+
+static int adxl367_reg_access(struct iio_dev *indio_dev,
+			      unsigned int reg,
+			      unsigned int writeval,
+			      unsigned int *readval)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(st->regmap, reg, readval);
+	else
+		return regmap_write(st->regmap, reg, writeval);
+}
+
+static int adxl367_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long info)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		return adxl367_read_sample(indio_dev, chan, val);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_ACCEL:
+			mutex_lock(&st->lock);
+			*val = adxl367_range_scale_tbl[st->range][0];
+			*val2 = adxl367_range_scale_tbl[st->range][1];
+			mutex_unlock(&st->lock);
+			return IIO_VAL_INT_PLUS_NANO;
+		case IIO_TEMP:
+			*val = 1000;
+			*val2 = ADXL367_TEMP_PER_C;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_VOLTAGE:
+			*val = ADXL367_VOLTAGE_MAX_MV;
+			*val2 = ADXL367_VOLTAGE_MAX_RAW;
+			return IIO_VAL_FRACTIONAL;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		switch (chan->type) {
+		case IIO_TEMP:
+			*val = 25 * ADXL367_TEMP_PER_C - ADXL367_TEMP_25C;
+			return IIO_VAL_INT;
+		case IIO_VOLTAGE:
+			*val = ADXL367_VOLTAGE_OFFSET;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		mutex_lock(&st->lock);
+		*val = adxl367_samp_freq_tbl[st->odr][0];
+		*val2 = adxl367_samp_freq_tbl[st->odr][1];
+		mutex_unlock(&st->lock);
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl367_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long info)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_SAMP_FREQ: {
+		enum adxl367_odr odr;
+
+		ret = adxl367_find_odr(st, val, val2, &odr);
+		if (ret)
+			return ret;
+
+		return adxl367_set_odr(indio_dev, odr);
+	}
+	case IIO_CHAN_INFO_SCALE: {
+		enum adxl367_range range;
+
+		ret = adxl367_find_range(st, val, val2, &range);
+		if (ret)
+			return ret;
+
+		return adxl367_set_range(indio_dev, range);
+	}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl367_write_raw_get_fmt(struct iio_dev *indio_dev,
+				     struct iio_chan_spec const *chan,
+				     long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_SCALE:
+		if (chan->type != IIO_ACCEL)
+			return -EINVAL;
+
+		return IIO_VAL_INT_PLUS_NANO;
+	default:
+		return IIO_VAL_INT_PLUS_MICRO;
+	}
+}
+
+static int adxl367_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_SCALE:
+		if (chan->type != IIO_ACCEL)
+			return -EINVAL;
+
+		*vals = (int *)adxl367_range_scale_tbl;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		*length = ARRAY_SIZE(adxl367_range_scale_tbl) * 2;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (int *)adxl367_samp_freq_tbl;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(adxl367_samp_freq_tbl) * 2;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl367_read_event_value(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir,
+				    enum iio_event_info info,
+				    int *val, int *val2)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE: {
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			mutex_lock(&st->lock);
+			*val = st->act_threshold;
+			mutex_unlock(&st->lock);
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			mutex_lock(&st->lock);
+			*val = st->inact_threshold;
+			mutex_unlock(&st->lock);
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	}
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			mutex_lock(&st->lock);
+			*val = st->act_time_ms;
+			mutex_unlock(&st->lock);
+			*val2 = 1000;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_EV_DIR_FALLING:
+			mutex_lock(&st->lock);
+			*val = st->inact_time_ms;
+			mutex_unlock(&st->lock);
+			*val2 = 1000;
+			return IIO_VAL_FRACTIONAL;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl367_write_event_value(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir,
+				     enum iio_event_info info,
+				     int val, int val2)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		if (val < 0)
+			return -EINVAL;
+
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return adxl367_set_act_threshold(st, ADXL367_ACTIVITY, val);
+		case IIO_EV_DIR_FALLING:
+			return adxl367_set_act_threshold(st, ADXL367_INACTIVITY, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_PERIOD:
+		if (val < 0)
+			return -EINVAL;
+
+		val = val * 1000 + DIV_ROUND_UP(val2, 1000);
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return adxl367_set_act_time_ms(st, ADXL367_ACTIVITY, val);
+		case IIO_EV_DIR_FALLING:
+			return adxl367_set_act_time_ms(st, ADXL367_INACTIVITY, val);
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl367_read_event_config(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	bool en;
+	int ret;
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		ret = adxl367_get_act_interrupt_en(st, ADXL367_ACTIVITY, &en);
+		return ret ?: en;
+	case IIO_EV_DIR_FALLING:
+		ret = adxl367_get_act_interrupt_en(st, ADXL367_INACTIVITY, &en);
+		return ret ?: en;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl367_write_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir,
+				      int state)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	enum adxl367_activity_type act;
+	int ret;
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		act = ADXL367_ACTIVITY;
+		break;
+	case IIO_EV_DIR_FALLING:
+		act = ADXL367_INACTIVITY;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_act_interrupt_en(st, act, state);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_act_en(st, act, state ? ADCL367_ACT_REF_ENABLED
+						: ADXL367_ACT_DISABLED);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+
+out:
+	mutex_unlock(&st->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static ssize_t adxl367_get_fifo_enabled(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct adxl367_state *st = iio_priv(dev_to_iio_dev(dev));
+	enum adxl367_fifo_mode fifo_mode;
+	int ret;
+
+	ret = adxl367_get_fifo_mode(st, &fifo_mode);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%d\n", fifo_mode != ADXL367_FIFO_MODE_DISABLED);
+}
+
+static ssize_t adxl367_get_fifo_watermark(struct device *dev,
+					  struct device_attribute *attr,
+					  char *buf)
+{
+	struct adxl367_state *st = iio_priv(dev_to_iio_dev(dev));
+	unsigned int fifo_watermark;
+
+	mutex_lock(&st->lock);
+	fifo_watermark = st->fifo_watermark;
+	mutex_unlock(&st->lock);
+
+	return sysfs_emit(buf, "%d\n", fifo_watermark);
+}
+
+static ssize_t hwfifo_watermark_min_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", "1");
+}
+
+static ssize_t hwfifo_watermark_max_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", __stringify(ADXL367_FIFO_MAX_WATERMARK));
+}
+
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_min, 0);
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_max, 0);
+static IIO_DEVICE_ATTR(hwfifo_watermark, 0444,
+		       adxl367_get_fifo_watermark, NULL, 0);
+static IIO_DEVICE_ATTR(hwfifo_enabled, 0444,
+		       adxl367_get_fifo_enabled, NULL, 0);
+
+static const struct attribute *adxl367_fifo_attributes[] = {
+	&iio_dev_attr_hwfifo_watermark_min.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_max.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark.dev_attr.attr,
+	&iio_dev_attr_hwfifo_enabled.dev_attr.attr,
+	NULL,
+};
+
+static int adxl367_set_watermark(struct iio_dev *indio_dev, unsigned int val)
+{
+	struct adxl367_state *st  = iio_priv(indio_dev);
+	int ret;
+
+	if (val > ADXL367_FIFO_MAX_WATERMARK)
+		return -EINVAL;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_fifo_watermark(st, val);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static bool adxl367_find_mask_fifo_format(const unsigned long *scan_mask,
+					  enum adxl367_fifo_format *fifo_format)
+{
+	size_t size = ARRAY_SIZE(adxl367_fifo_formats);
+	int i;
+
+	for (i = 0; i < size; i++)
+		if (*scan_mask == adxl367_channel_masks[i])
+			break;
+
+	if (i == size)
+		return false;
+
+	*fifo_format = adxl367_fifo_formats[i];
+
+	return true;
+}
+
+static int adxl367_update_scan_mode(struct iio_dev *indio_dev,
+				    const unsigned long *active_scan_mask)
+{
+	struct adxl367_state *st  = iio_priv(indio_dev);
+	enum adxl367_fifo_format fifo_format;
+	int ret;
+
+	if (!adxl367_find_mask_fifo_format(active_scan_mask, &fifo_format))
+		return -EINVAL;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_fifo_format(st, fifo_format);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+	if (ret)
+		goto out;
+
+	st->fifo_set_size = bitmap_weight(active_scan_mask,
+					  indio_dev->masklength);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int adxl367_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_temp_adc_mask_en(st, indio_dev->active_scan_mask,
+					   true);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_fifo_watermark_interrupt_en(st, true);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_fifo_mode(st, ADXL367_FIFO_MODE_STREAM);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int adxl367_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct adxl367_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = adxl367_set_measure_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_fifo_mode(st, ADXL367_FIFO_MODE_DISABLED);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_fifo_watermark_interrupt_en(st, false);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_measure_en(st, true);
+	if (ret)
+		goto out;
+
+	ret = adxl367_set_temp_adc_mask_en(st, indio_dev->active_scan_mask,
+					   false);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static const struct iio_buffer_setup_ops adxl367_buffer_ops = {
+	.postenable = adxl367_buffer_postenable,
+	.predisable = adxl367_buffer_predisable,
+};
+
+static const struct iio_info adxl367_info = {
+	.read_raw = adxl367_read_raw,
+	.write_raw = adxl367_write_raw,
+	.write_raw_get_fmt = adxl367_write_raw_get_fmt,
+	.read_avail = adxl367_read_avail,
+	.read_event_config = adxl367_read_event_config,
+	.write_event_config = adxl367_write_event_config,
+	.read_event_value = adxl367_read_event_value,
+	.write_event_value = adxl367_write_event_value,
+	.debugfs_reg_access = adxl367_reg_access,
+	.hwfifo_set_watermark = adxl367_set_watermark,
+	.update_scan_mode = adxl367_update_scan_mode,
+};
+
+static const struct iio_event_spec adxl367_events[] = {
+	{
+		.type = IIO_EV_TYPE_MAG_REFERENCED,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_ENABLE) |
+				       BIT(IIO_EV_INFO_PERIOD) |
+				       BIT(IIO_EV_INFO_VALUE),
+	},
+	{
+		.type = IIO_EV_TYPE_MAG_REFERENCED,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_ENABLE) |
+				       BIT(IIO_EV_INFO_PERIOD) |
+				       BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
+#define ADXL367_ACCEL_CHANNEL(index, reg, axis) {			\
+	.type = IIO_ACCEL,						\
+	.address = (reg),						\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),		\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE),	\
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+	.info_mask_shared_by_all_available =				\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+	.event_spec = adxl367_events,					\
+	.num_event_specs = ARRAY_SIZE(adxl367_events),			\
+	.scan_index = (index),						\
+	.scan_type = {							\
+		.sign = 's',						\
+		.realbits = 14,						\
+		.storagebits = 16,					\
+		.endianness = IIO_BE,					\
+	},								\
+}
+
+#define ADXL367_CHANNEL(index, reg, _type) {				\
+	.type = (_type),						\
+	.address = (reg),						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_OFFSET) |		\
+			      BIT(IIO_CHAN_INFO_SCALE),			\
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+	.scan_index = (index),						\
+	.scan_type = {							\
+		.sign = 's',						\
+		.realbits = 14,						\
+		.storagebits = 16,					\
+		.endianness = IIO_BE,					\
+	},								\
+}
+
+static const struct iio_chan_spec adxl367_channels[] = {
+	ADXL367_ACCEL_CHANNEL(ADXL367_X_CHANNEL_INDEX, ADXL367_REG_X_DATA_H, X),
+	ADXL367_ACCEL_CHANNEL(ADXL367_Y_CHANNEL_INDEX, ADXL367_REG_Y_DATA_H, Y),
+	ADXL367_ACCEL_CHANNEL(ADXL367_Z_CHANNEL_INDEX, ADXL367_REG_Z_DATA_H, Z),
+	ADXL367_CHANNEL(ADXL367_TEMP_CHANNEL_INDEX, ADXL367_REG_TEMP_DATA_H,
+			IIO_TEMP),
+	ADXL367_CHANNEL(ADXL367_EX_ADC_CHANNEL_INDEX, ADXL367_REG_EX_ADC_DATA_H,
+			IIO_VOLTAGE),
+};
+
+static int adxl367_verify_devid(struct adxl367_state *st)
+{
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read_poll_timeout(st->regmap, ADXL367_REG_DEVID, val,
+				       val == ADXL367_DEVID_AD, 1000, 10000);
+	if (ret)
+		return dev_err_probe(st->dev, -ENODEV,
+				     "Invalid dev id 0x%02X, expected 0x%02X\n",
+				     val, ADXL367_DEVID_AD);
+
+	return 0;
+}
+
+static int adxl367_setup(struct adxl367_state *st)
+{
+	int ret;
+
+	ret = _adxl367_set_act_threshold(st, ADXL367_ACTIVITY,
+					 ADXL367_2G_RANGE_1G);
+	if (ret)
+		return ret;
+
+	ret = _adxl367_set_act_threshold(st, ADXL367_INACTIVITY,
+					 ADXL367_2G_RANGE_100MG);
+	if (ret)
+		return ret;
+
+	ret = adxl367_set_act_proc_mode(st, ADXL367_LOOPED);
+	if (ret)
+		return ret;
+
+	ret = _adxl367_set_odr(st, ADXL367_ODR_400HZ);
+	if (ret)
+		return ret;
+
+	ret = _adxl367_set_act_time_ms(st, 10);
+	if (ret)
+		return ret;
+
+	ret = _adxl367_set_inact_time_ms(st, 10000);
+	if (ret)
+		return ret;
+
+	return adxl367_set_measure_en(st, true);
+}
+
+static void adxl367_disable_regulators(void *data)
+{
+	struct adxl367_state *st = data;
+
+	regulator_bulk_disable(ARRAY_SIZE(st->regulators), st->regulators);
+}
+
+int adxl367_probe(struct device *dev, const struct adxl367_ops *ops,
+		  void *context, struct regmap *regmap, int irq)
+{
+	struct iio_dev *indio_dev;
+	struct adxl367_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	st->dev = dev;
+	st->regmap = regmap;
+	st->context = context;
+	st->ops = ops;
+
+	mutex_init(&st->lock);
+
+	indio_dev->channels = adxl367_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adxl367_channels);
+	indio_dev->available_scan_masks = adxl367_channel_masks;
+	indio_dev->name = "adxl367";
+	indio_dev->info = &adxl367_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	st->regulators[0].supply = "vdd";
+	st->regulators[1].supply = "vddio";
+
+	ret = devm_regulator_bulk_get(st->dev, ARRAY_SIZE(st->regulators),
+				      st->regulators);
+	if (ret)
+		return dev_err_probe(st->dev, ret,
+				     "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(st->regulators), st->regulators);
+	if (ret)
+		return dev_err_probe(st->dev, ret,
+				     "Failed to enable regulators\n");
+
+	ret = devm_add_action_or_reset(st->dev, adxl367_disable_regulators, st);
+	if (ret)
+		return dev_err_probe(st->dev, ret,
+				     "Failed to add regulators disable action\n");
+
+	ret = regmap_write(st->regmap, ADXL367_REG_RESET, ADXL367_RESET_CODE);
+	if (ret)
+		return ret;
+
+	ret = adxl367_verify_devid(st);
+	if (ret)
+		return ret;
+
+	ret = adxl367_setup(st);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_kfifo_buffer_setup_ext(st->dev, indio_dev,
+					      &adxl367_buffer_ops,
+					      adxl367_fifo_attributes);
+	if (ret)
+		return ret;
+
+	ret = devm_request_threaded_irq(st->dev, irq, NULL,
+					adxl367_irq_handler, IRQF_ONESHOT,
+					indio_dev->name, indio_dev);
+	if (ret)
+		return dev_err_probe(st->dev, ret, "Failed to request irq\n");
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_NS_GPL(adxl367_probe, IIO_ADXL367);
+
+MODULE_AUTHOR("Cosmin Tanislav <cosmin.tanislav@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADXL367 3-axis accelerometer driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/accel/adxl367.h b/drivers/iio/accel/adxl367.h
new file mode 100644
index 000000000000..4a42622149b1
--- /dev/null
+++ b/drivers/iio/accel/adxl367.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright (C) 2021 Analog Devices, Inc.
+ * Author: Cosmin Tanislav <cosmin.tanislav@analog.com>
+ */
+
+#ifndef _ADXL367_H_
+#define _ADXL367_H_
+
+#include <linux/types.h>
+
+struct device;
+struct regmap;
+
+struct adxl367_ops {
+	int (*read_fifo)(void *context, __be16 *fifo_buf,
+			 unsigned int fifo_entries);
+};
+
+int adxl367_probe(struct device *dev, const struct adxl367_ops *ops,
+		  void *context, struct regmap *regmap, int irq);
+
+#endif /* _ADXL367_H_ */
diff --git a/drivers/iio/accel/adxl367_i2c.c b/drivers/iio/accel/adxl367_i2c.c
new file mode 100644
index 000000000000..3606efa25835
--- /dev/null
+++ b/drivers/iio/accel/adxl367_i2c.c
@@ -0,0 +1,90 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Analog Devices, Inc.
+ * Author: Cosmin Tanislav <cosmin.tanislav@analog.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "adxl367.h"
+
+#define ADXL367_I2C_FIFO_DATA	0x42
+
+struct adxl367_i2c_state {
+	struct regmap *regmap;
+};
+
+static bool adxl367_readable_noinc_reg(struct device *dev, unsigned int reg)
+{
+	return reg == ADXL367_I2C_FIFO_DATA;
+}
+
+static int adxl367_i2c_read_fifo(void *context, __be16 *fifo_buf,
+				 unsigned int fifo_entries)
+{
+	struct adxl367_i2c_state *st = context;
+
+	return regmap_noinc_read(st->regmap, ADXL367_I2C_FIFO_DATA, fifo_buf,
+				 fifo_entries * sizeof(*fifo_buf));
+}
+
+static const struct regmap_config adxl367_i2c_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.readable_noinc_reg = adxl367_readable_noinc_reg,
+};
+
+static const struct adxl367_ops adxl367_i2c_ops = {
+	.read_fifo = adxl367_i2c_read_fifo,
+};
+
+static int adxl367_i2c_probe(struct i2c_client *client,
+			     const struct i2c_device_id *id)
+{
+	struct adxl367_i2c_state *st;
+	struct regmap *regmap;
+
+	st = devm_kzalloc(&client->dev, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	regmap = devm_regmap_init_i2c(client, &adxl367_i2c_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	st->regmap = regmap;
+
+	return adxl367_probe(&client->dev, &adxl367_i2c_ops, st, regmap,
+			     client->irq);
+}
+
+static const struct i2c_device_id adxl367_i2c_id[] = {
+	{ "adxl367", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, adxl367_i2c_id);
+
+static const struct of_device_id adxl367_of_match[] = {
+	{ .compatible = "adi,adxl367" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, adxl367_of_match);
+
+static struct i2c_driver adxl367_i2c_driver = {
+	.driver = {
+		.name = "adxl367_i2c",
+		.of_match_table = adxl367_of_match,
+	},
+	.probe = adxl367_i2c_probe,
+	.id_table = adxl367_i2c_id,
+};
+
+module_i2c_driver(adxl367_i2c_driver);
+
+MODULE_IMPORT_NS(IIO_ADXL367);
+MODULE_AUTHOR("Cosmin Tanislav <cosmin.tanislav@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADXL367 3-axis accelerometer I2C driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/accel/adxl367_spi.c b/drivers/iio/accel/adxl367_spi.c
new file mode 100644
index 000000000000..118c894015a5
--- /dev/null
+++ b/drivers/iio/accel/adxl367_spi.c
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2021 Analog Devices, Inc.
+ * Author: Cosmin Tanislav <cosmin.tanislav@analog.com>
+ */
+
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include <linux/iio/iio.h>
+
+#include "adxl367.h"
+
+#define ADXL367_SPI_WRITE_COMMAND	0x0A
+#define ADXL367_SPI_READ_COMMAND	0x0B
+#define ADXL367_SPI_FIFO_COMMAND	0x0D
+
+struct adxl367_spi_state {
+	struct spi_device	*spi;
+
+	struct spi_message	reg_write_msg;
+	struct spi_transfer	reg_write_xfer[2];
+
+	struct spi_message	reg_read_msg;
+	struct spi_transfer	reg_read_xfer[2];
+
+	struct spi_message	fifo_msg;
+	struct spi_transfer	fifo_xfer[2];
+
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers live in their own cache lines.
+	 */
+	u8			reg_write_tx_buf[1] __aligned(IIO_DMA_MINALIGN);
+	u8			reg_read_tx_buf[2];
+	u8			fifo_tx_buf[1];
+};
+
+static int adxl367_read_fifo(void *context, __be16 *fifo_buf,
+			     unsigned int fifo_entries)
+{
+	struct adxl367_spi_state *st = context;
+
+	st->fifo_xfer[1].rx_buf = fifo_buf;
+	st->fifo_xfer[1].len = fifo_entries * sizeof(*fifo_buf);
+
+	return spi_sync(st->spi, &st->fifo_msg);
+}
+
+static int adxl367_read(void *context, const void *reg_buf, size_t reg_size,
+			void *val_buf, size_t val_size)
+{
+	struct adxl367_spi_state *st = context;
+	u8 reg = ((const u8 *)reg_buf)[0];
+
+	st->reg_read_tx_buf[1] = reg;
+	st->reg_read_xfer[1].rx_buf = val_buf;
+	st->reg_read_xfer[1].len = val_size;
+
+	return spi_sync(st->spi, &st->reg_read_msg);
+}
+
+static int adxl367_write(void *context, const void *val_buf, size_t val_size)
+{
+	struct adxl367_spi_state *st = context;
+
+	st->reg_write_xfer[1].tx_buf = val_buf;
+	st->reg_write_xfer[1].len = val_size;
+
+	return spi_sync(st->spi, &st->reg_write_msg);
+}
+
+static struct regmap_bus adxl367_spi_regmap_bus = {
+	.read = adxl367_read,
+	.write = adxl367_write,
+};
+
+static const struct regmap_config adxl367_spi_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static const struct adxl367_ops adxl367_spi_ops = {
+	.read_fifo = adxl367_read_fifo,
+};
+
+static int adxl367_spi_probe(struct spi_device *spi)
+{
+	struct adxl367_spi_state *st;
+	struct regmap *regmap;
+
+	st = devm_kzalloc(&spi->dev, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	st->spi = spi;
+
+	/*
+	 * Xfer:   [XFR1] [           XFR2           ]
+	 * Master:  0x0A   ADDR DATA0 DATA1 ... DATAN
+	 * Slave:   ....   ..........................
+	 */
+	st->reg_write_tx_buf[0] = ADXL367_SPI_WRITE_COMMAND;
+	st->reg_write_xfer[0].tx_buf = st->reg_write_tx_buf;
+	st->reg_write_xfer[0].len = sizeof(st->reg_write_tx_buf);
+	spi_message_init_with_transfers(&st->reg_write_msg,
+					st->reg_write_xfer, 2);
+
+	/*
+	 * Xfer:   [   XFR1  ] [         XFR2        ]
+	 * Master:  0x0B ADDR   .....................
+	 * Slave:   .........   DATA0 DATA1 ... DATAN
+	 */
+	st->reg_read_tx_buf[0] = ADXL367_SPI_READ_COMMAND;
+	st->reg_read_xfer[0].tx_buf = st->reg_read_tx_buf;
+	st->reg_read_xfer[0].len = sizeof(st->reg_read_tx_buf);
+	spi_message_init_with_transfers(&st->reg_read_msg,
+					st->reg_read_xfer, 2);
+
+	/*
+	 * Xfer:   [XFR1] [         XFR2        ]
+	 * Master:  0x0D   .....................
+	 * Slave:   ....   DATA0 DATA1 ... DATAN
+	 */
+	st->fifo_tx_buf[0] = ADXL367_SPI_FIFO_COMMAND;
+	st->fifo_xfer[0].tx_buf = st->fifo_tx_buf;
+	st->fifo_xfer[0].len = sizeof(st->fifo_tx_buf);
+	spi_message_init_with_transfers(&st->fifo_msg, st->fifo_xfer, 2);
+
+	regmap = devm_regmap_init(&spi->dev, &adxl367_spi_regmap_bus, st,
+				  &adxl367_spi_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	return adxl367_probe(&spi->dev, &adxl367_spi_ops, st, regmap, spi->irq);
+}
+
+static const struct spi_device_id adxl367_spi_id[] = {
+	{ "adxl367", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(spi, adxl367_spi_id);
+
+static const struct of_device_id adxl367_of_match[] = {
+	{ .compatible = "adi,adxl367" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, adxl367_of_match);
+
+static struct spi_driver adxl367_spi_driver = {
+	.driver = {
+		.name = "adxl367_spi",
+		.of_match_table = adxl367_of_match,
+	},
+	.probe = adxl367_spi_probe,
+	.id_table = adxl367_spi_id,
+};
+
+module_spi_driver(adxl367_spi_driver);
+
+MODULE_IMPORT_NS(IIO_ADXL367);
+MODULE_AUTHOR("Cosmin Tanislav <cosmin.tanislav@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADXL367 3-axis accelerometer SPI driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/accel/adxl372.c b/drivers/iio/accel/adxl372.c
index 60daf04ce188..bc53af809d5d 100644
--- a/drivers/iio/accel/adxl372.c
+++ b/drivers/iio/accel/adxl372.c
@@ -5,6 +5,7 @@
  * Copyright 2018 Analog Devices Inc.
  */
 
+#include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
@@ -113,6 +114,11 @@
 #define ADXL372_STATUS_1_AWAKE(x)		(((x) >> 6) & 0x1)
 #define ADXL372_STATUS_1_ERR_USR_REGS(x)	(((x) >> 7) & 0x1)
 
+/* ADXL372_STATUS_2 */
+#define ADXL372_STATUS_2_INACT(x)		(((x) >> 4) & 0x1)
+#define ADXL372_STATUS_2_ACT(x)			(((x) >> 5) & 0x1)
+#define ADXL372_STATUS_2_AC2(x)			(((x) >> 6) & 0x1)
+
 /* ADXL372_INT1_MAP */
 #define ADXL372_INT1_MAP_DATA_RDY_MSK		BIT(0)
 #define ADXL372_INT1_MAP_DATA_RDY_MODE(x)	(((x) & 0x1) << 0)
@@ -131,8 +137,17 @@
 #define ADXL372_INT1_MAP_LOW_MSK		BIT(7)
 #define ADXL372_INT1_MAP_LOW_MODE(x)		(((x) & 0x1) << 7)
 
+/* ADX372_THRESH */
+#define ADXL372_THRESH_VAL_H_MSK	GENMASK(10, 3)
+#define ADXL372_THRESH_VAL_H_SEL(x)	FIELD_GET(ADXL372_THRESH_VAL_H_MSK, x)
+#define ADXL372_THRESH_VAL_L_MSK	GENMASK(2, 0)
+#define ADXL372_THRESH_VAL_L_SEL(x)	FIELD_GET(ADXL372_THRESH_VAL_L_MSK, x)
+
 /* The ADXL372 includes a deep, 512 sample FIFO buffer */
 #define ADXL372_FIFO_SIZE			512
+#define ADXL372_X_AXIS_EN(x)			((x) & BIT(0))
+#define ADXL372_Y_AXIS_EN(x)			((x) & BIT(1))
+#define ADXL372_Z_AXIS_EN(x)			((x) & BIT(2))
 
 /*
  * At +/- 200g with 12-bit resolution, scale is computed as:
@@ -222,6 +237,20 @@ static const struct adxl372_axis_lookup adxl372_axis_lookup_table[] = {
 	{ BIT(0) | BIT(1) | BIT(2), ADXL372_XYZ_FIFO },
 };
 
+static const struct iio_event_spec adxl372_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+		.mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD) | BIT(IIO_EV_INFO_ENABLE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+		.mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD) | BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
 #define ADXL372_ACCEL_CHANNEL(index, reg, axis) {			\
 	.type = IIO_ACCEL,						\
 	.address = reg,							\
@@ -239,6 +268,8 @@ static const struct adxl372_axis_lookup adxl372_axis_lookup_table[] = {
 		.shift = 4,						\
 		.endianness = IIO_BE,					\
 	},								\
+	.event_spec = adxl372_events,					\
+	.num_event_specs = ARRAY_SIZE(adxl372_events)			\
 }
 
 static const struct iio_chan_spec adxl372_channels[] = {
@@ -252,8 +283,10 @@ struct adxl372_state {
 	struct device			*dev;
 	struct regmap			*regmap;
 	struct iio_trigger		*dready_trig;
+	struct iio_trigger		*peak_datardy_trig;
 	enum adxl372_fifo_mode		fifo_mode;
 	enum adxl372_fifo_format	fifo_format;
+	unsigned int			fifo_axis_mask;
 	enum adxl372_op_mode		op_mode;
 	enum adxl372_act_proc_mode	act_proc_mode;
 	enum adxl372_odr		odr;
@@ -261,10 +294,12 @@ struct adxl372_state {
 	u32				act_time_ms;
 	u32				inact_time_ms;
 	u8				fifo_set_size;
-	u8				int1_bitmask;
-	u8				int2_bitmask;
+	unsigned long			int1_bitmask;
+	unsigned long			int2_bitmask;
 	u16				watermark;
 	__be16				fifo_buf[ADXL372_FIFO_SIZE];
+	bool				peak_fifo_mode_en;
+	struct mutex			threshold_m; /* lock for threshold */
 };
 
 static const unsigned long adxl372_channel_masks[] = {
@@ -276,6 +311,46 @@ static const unsigned long adxl372_channel_masks[] = {
 	0
 };
 
+static ssize_t adxl372_read_threshold_value(struct iio_dev *indio_dev, unsigned int addr,
+					    u16 *threshold)
+{
+	struct adxl372_state *st = iio_priv(indio_dev);
+	__be16 raw_regval;
+	u16 regval;
+	int ret;
+
+	ret = regmap_bulk_read(st->regmap, addr, &raw_regval, sizeof(raw_regval));
+	if (ret < 0)
+		return ret;
+
+	regval = be16_to_cpu(raw_regval);
+	regval >>= 5;
+
+	*threshold = regval;
+
+	return 0;
+}
+
+static ssize_t adxl372_write_threshold_value(struct iio_dev *indio_dev, unsigned int addr,
+					     u16 threshold)
+{
+	struct adxl372_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->threshold_m);
+	ret = regmap_write(st->regmap, addr, ADXL372_THRESH_VAL_H_SEL(threshold));
+	if (ret < 0)
+		goto unlock;
+
+	ret = regmap_update_bits(st->regmap, addr + 1, GENMASK(7, 5),
+				 ADXL372_THRESH_VAL_L_SEL(threshold) << 5);
+
+unlock:
+	mutex_unlock(&st->threshold_m);
+
+	return ret;
+}
+
 static int adxl372_read_axis(struct adxl372_state *st, u8 addr)
 {
 	__be16 regval;
@@ -453,8 +528,8 @@ static int adxl372_set_inactivity_time_ms(struct adxl372_state *st,
 }
 
 static int adxl372_set_interrupts(struct adxl372_state *st,
-				  unsigned char int1_bitmask,
-				  unsigned char int2_bitmask)
+				  unsigned long int1_bitmask,
+				  unsigned long int2_bitmask)
 {
 	int ret;
 
@@ -523,6 +598,39 @@ static int adxl372_get_status(struct adxl372_state *st,
 	return ret;
 }
 
+static void adxl372_arrange_axis_data(struct adxl372_state *st, __be16 *sample)
+{
+	__be16	axis_sample[3];
+	int i = 0;
+
+	memset(axis_sample, 0, 3 * sizeof(__be16));
+	if (ADXL372_X_AXIS_EN(st->fifo_axis_mask))
+		axis_sample[i++] = sample[0];
+	if (ADXL372_Y_AXIS_EN(st->fifo_axis_mask))
+		axis_sample[i++] = sample[1];
+	if (ADXL372_Z_AXIS_EN(st->fifo_axis_mask))
+		axis_sample[i++] = sample[2];
+
+	memcpy(sample, axis_sample, 3 * sizeof(__be16));
+}
+
+static void adxl372_push_event(struct iio_dev *indio_dev, s64 timestamp, u8 status2)
+{
+	unsigned int ev_dir = IIO_EV_DIR_NONE;
+
+	if (ADXL372_STATUS_2_ACT(status2))
+		ev_dir = IIO_EV_DIR_RISING;
+
+	if (ADXL372_STATUS_2_INACT(status2))
+		ev_dir = IIO_EV_DIR_FALLING;
+
+	if (ev_dir != IIO_EV_DIR_NONE)
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X_OR_Y_OR_Z,
+						  IIO_EV_TYPE_THRESH, ev_dir),
+			       timestamp);
+}
+
 static irqreturn_t adxl372_trigger_handler(int irq, void  *p)
 {
 	struct iio_poll_func *pf = p;
@@ -536,6 +644,8 @@ static irqreturn_t adxl372_trigger_handler(int irq, void  *p)
 	if (ret < 0)
 		goto err;
 
+	adxl372_push_event(indio_dev, iio_get_time_ns(indio_dev), status2);
+
 	if (st->fifo_mode != ADXL372_FIFO_BYPASSED &&
 	    ADXL372_STATUS_1_FIFO_FULL(status1)) {
 		/*
@@ -554,8 +664,12 @@ static irqreturn_t adxl372_trigger_handler(int irq, void  *p)
 			goto err;
 
 		/* Each sample is 2 bytes */
-		for (i = 0; i < fifo_entries; i += st->fifo_set_size)
+		for (i = 0; i < fifo_entries; i += st->fifo_set_size) {
+			/* filter peak detection data */
+			if (st->peak_fifo_mode_en)
+				adxl372_arrange_axis_data(st, &st->fifo_buf[i]);
 			iio_push_to_buffers(indio_dev, &st->fifo_buf[i]);
+		}
 	}
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -723,6 +837,129 @@ static int adxl372_write_raw(struct iio_dev *indio_dev,
 	}
 }
 
+static int adxl372_read_event_value(struct iio_dev *indio_dev, const struct iio_chan_spec *chan,
+				    enum iio_event_type type, enum iio_event_direction dir,
+				    enum iio_event_info info, int *val, int *val2)
+{
+	struct adxl372_state *st = iio_priv(indio_dev);
+	unsigned int addr;
+	u16 raw_value;
+	int ret;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			addr = ADXL372_X_THRESH_ACT_H + 2 * chan->scan_index;
+			ret = adxl372_read_threshold_value(indio_dev, addr, &raw_value);
+			if (ret < 0)
+				return ret;
+			*val = raw_value * ADXL372_USCALE;
+			*val2 = 1000000;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_EV_DIR_FALLING:
+			addr = ADXL372_X_THRESH_INACT_H + 2 * chan->scan_index;
+			ret =  adxl372_read_threshold_value(indio_dev, addr, &raw_value);
+			if (ret < 0)
+				return ret;
+			*val = raw_value * ADXL372_USCALE;
+			*val2 = 1000000;
+			return IIO_VAL_FRACTIONAL;
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			*val = st->act_time_ms;
+			*val2 = 1000;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_EV_DIR_FALLING:
+			*val = st->inact_time_ms;
+			*val2 = 1000;
+			return IIO_VAL_FRACTIONAL;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl372_write_event_value(struct iio_dev *indio_dev, const struct iio_chan_spec *chan,
+				     enum iio_event_type type, enum iio_event_direction dir,
+				     enum iio_event_info info, int val, int val2)
+{
+	struct adxl372_state *st = iio_priv(indio_dev);
+	unsigned int val_ms;
+	unsigned int addr;
+	u16 raw_val;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		raw_val = DIV_ROUND_UP(val * 1000000, ADXL372_USCALE);
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			addr = ADXL372_X_THRESH_ACT_H + 2 * chan->scan_index;
+			return adxl372_write_threshold_value(indio_dev, addr, raw_val);
+		case IIO_EV_DIR_FALLING:
+			addr = ADXL372_X_THRESH_INACT_H + 2 * chan->scan_index;
+			return adxl372_write_threshold_value(indio_dev, addr, raw_val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_PERIOD:
+		val_ms = val * 1000 + DIV_ROUND_UP(val2, 1000);
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return adxl372_set_activity_time_ms(st, val_ms);
+		case IIO_EV_DIR_FALLING:
+			return adxl372_set_inactivity_time_ms(st, val_ms);
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl372_read_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan,
+				     enum iio_event_type type, enum iio_event_direction dir)
+{
+	struct adxl372_state *st = iio_priv(indio_dev);
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		return FIELD_GET(ADXL372_INT1_MAP_ACT_MSK, st->int1_bitmask);
+	case IIO_EV_DIR_FALLING:
+		return FIELD_GET(ADXL372_INT1_MAP_INACT_MSK, st->int1_bitmask);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxl372_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan,
+				      enum iio_event_type type, enum iio_event_direction dir,
+				      int state)
+{
+	struct adxl372_state *st = iio_priv(indio_dev);
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		set_mask_bits(&st->int1_bitmask, ADXL372_INT1_MAP_ACT_MSK,
+			      ADXL372_INT1_MAP_ACT_MODE(state));
+		break;
+	case IIO_EV_DIR_FALLING:
+		set_mask_bits(&st->int1_bitmask, ADXL372_INT1_MAP_INACT_MSK,
+			      ADXL372_INT1_MAP_INACT_MODE(state));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return adxl372_set_interrupts(st, st->int1_bitmask, 0);
+}
+
 static ssize_t adxl372_show_filter_freq_avail(struct device *dev,
 					      struct device_attribute *attr,
 					      char *buf)
@@ -761,17 +998,30 @@ static ssize_t adxl372_get_fifo_watermark(struct device *dev,
 	return sprintf(buf, "%d\n", st->watermark);
 }
 
-static IIO_CONST_ATTR(hwfifo_watermark_min, "1");
-static IIO_CONST_ATTR(hwfifo_watermark_max,
-		      __stringify(ADXL372_FIFO_SIZE));
+static ssize_t hwfifo_watermark_min_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", "1");
+}
+
+static ssize_t hwfifo_watermark_max_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", __stringify(ADXL372_FIFO_SIZE));
+}
+
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_min, 0);
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_max, 0);
 static IIO_DEVICE_ATTR(hwfifo_watermark, 0444,
 		       adxl372_get_fifo_watermark, NULL, 0);
 static IIO_DEVICE_ATTR(hwfifo_enabled, 0444,
 		       adxl372_get_fifo_enabled, NULL, 0);
 
 static const struct attribute *adxl372_fifo_attributes[] = {
-	&iio_const_attr_hwfifo_watermark_min.dev_attr.attr,
-	&iio_const_attr_hwfifo_watermark_max.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_min.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_max.dev_attr.attr,
 	&iio_dev_attr_hwfifo_watermark.dev_attr.attr,
 	&iio_dev_attr_hwfifo_enabled.dev_attr.attr,
 	NULL,
@@ -795,14 +1045,11 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
 	unsigned int mask;
 	int i, ret;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
+	st->int1_bitmask |= ADXL372_INT1_MAP_FIFO_FULL_MSK;
+	ret = adxl372_set_interrupts(st, st->int1_bitmask, 0);
 	if (ret < 0)
 		return ret;
 
-	ret = adxl372_set_interrupts(st, ADXL372_INT1_MAP_FIFO_FULL_MSK, 0);
-	if (ret < 0)
-		goto err;
-
 	mask = *indio_dev->active_scan_mask;
 
 	for (i = 0; i < ARRAY_SIZE(adxl372_axis_lookup_table); i++) {
@@ -810,19 +1057,26 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
 			break;
 	}
 
-	if (i == ARRAY_SIZE(adxl372_axis_lookup_table)) {
-		ret = -EINVAL;
-		goto err;
-	}
+	if (i == ARRAY_SIZE(adxl372_axis_lookup_table))
+		return -EINVAL;
 
 	st->fifo_format = adxl372_axis_lookup_table[i].fifo_format;
+	st->fifo_axis_mask = adxl372_axis_lookup_table[i].bits;
 	st->fifo_set_size = bitmap_weight(indio_dev->active_scan_mask,
 					  indio_dev->masklength);
+
+	/* Configure the FIFO to store sets of impact event peak. */
+	if (st->peak_fifo_mode_en) {
+		st->fifo_set_size = 3;
+		st->fifo_format = ADXL372_XYZ_PEAK_FIFO;
+	}
+
 	/*
 	 * The 512 FIFO samples can be allotted in several ways, such as:
 	 * 170 sample sets of concurrent 3-axis data
 	 * 256 sample sets of concurrent 2-axis data (user selectable)
 	 * 512 sample sets of single-axis data
+	 * 170 sets of impact event peak (x, y, z)
 	 */
 	if ((st->watermark * st->fifo_set_size) > ADXL372_FIFO_SIZE)
 		st->watermark = (ADXL372_FIFO_SIZE  / st->fifo_set_size);
@@ -832,26 +1086,24 @@ static int adxl372_buffer_postenable(struct iio_dev *indio_dev)
 	ret = adxl372_configure_fifo(st);
 	if (ret < 0) {
 		st->fifo_mode = ADXL372_FIFO_BYPASSED;
-		adxl372_set_interrupts(st, 0, 0);
-		goto err;
+		st->int1_bitmask &= ~ADXL372_INT1_MAP_FIFO_FULL_MSK;
+		adxl372_set_interrupts(st, st->int1_bitmask, 0);
+		return ret;
 	}
 
 	return 0;
-
-err:
-	iio_triggered_buffer_predisable(indio_dev);
-	return ret;
 }
 
 static int adxl372_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct adxl372_state *st = iio_priv(indio_dev);
 
-	adxl372_set_interrupts(st, 0, 0);
+	st->int1_bitmask &= ~ADXL372_INT1_MAP_FIFO_FULL_MSK;
+	adxl372_set_interrupts(st, st->int1_bitmask, 0);
 	st->fifo_mode = ADXL372_FIFO_BYPASSED;
 	adxl372_configure_fifo(st);
 
-	return iio_triggered_buffer_predisable(indio_dev);
+	return 0;
 }
 
 static const struct iio_buffer_setup_ops adxl372_buffer_ops = {
@@ -864,12 +1116,11 @@ static int adxl372_dready_trig_set_state(struct iio_trigger *trig,
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct adxl372_state *st = iio_priv(indio_dev);
-	unsigned long int mask = 0;
 
 	if (state)
-		mask = ADXL372_INT1_MAP_FIFO_FULL_MSK;
+		st->int1_bitmask |= ADXL372_INT1_MAP_FIFO_FULL_MSK;
 
-	return adxl372_set_interrupts(st, mask, 0);
+	return adxl372_set_interrupts(st, st->int1_bitmask, 0);
 }
 
 static int adxl372_validate_trigger(struct iio_dev *indio_dev,
@@ -877,7 +1128,7 @@ static int adxl372_validate_trigger(struct iio_dev *indio_dev,
 {
 	struct adxl372_state *st = iio_priv(indio_dev);
 
-	if (st->dready_trig != trig)
+	if (st->dready_trig != trig && st->peak_datardy_trig != trig)
 		return -EINVAL;
 
 	return 0;
@@ -888,6 +1139,25 @@ static const struct iio_trigger_ops adxl372_trigger_ops = {
 	.set_trigger_state = adxl372_dready_trig_set_state,
 };
 
+static int adxl372_peak_dready_trig_set_state(struct iio_trigger *trig,
+					      bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct adxl372_state *st = iio_priv(indio_dev);
+
+	if (state)
+		st->int1_bitmask |= ADXL372_INT1_MAP_FIFO_FULL_MSK;
+
+	st->peak_fifo_mode_en = state;
+
+	return adxl372_set_interrupts(st, st->int1_bitmask, 0);
+}
+
+static const struct iio_trigger_ops adxl372_peak_data_trigger_ops = {
+	.validate_device = &iio_trigger_validate_own_device,
+	.set_trigger_state = adxl372_peak_dready_trig_set_state,
+};
+
 static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("400 800 1600 3200 6400");
 static IIO_DEVICE_ATTR(in_accel_filter_low_pass_3db_frequency_available,
 		       0444, adxl372_show_filter_freq_avail, NULL, 0);
@@ -907,6 +1177,10 @@ static const struct iio_info adxl372_info = {
 	.attrs = &adxl372_attrs_group,
 	.read_raw = adxl372_read_raw,
 	.write_raw = adxl372_write_raw,
+	.read_event_config = adxl372_read_event_config,
+	.write_event_config = adxl372_write_event_config,
+	.read_event_value = adxl372_read_event_value,
+	.write_event_value = adxl372_write_event_value,
 	.debugfs_reg_access = &adxl372_reg_access,
 	.hwfifo_set_watermark = adxl372_set_watermark,
 };
@@ -915,7 +1189,7 @@ bool adxl372_readable_noinc_reg(struct device *dev, unsigned int reg)
 {
 	return (reg == ADXL372_FIFO_DATA);
 }
-EXPORT_SYMBOL_GPL(adxl372_readable_noinc_reg);
+EXPORT_SYMBOL_NS_GPL(adxl372_readable_noinc_reg, IIO_ADXL372);
 
 int adxl372_probe(struct device *dev, struct regmap *regmap,
 		  int irq, const char *name)
@@ -935,10 +1209,11 @@ int adxl372_probe(struct device *dev, struct regmap *regmap,
 	st->regmap = regmap;
 	st->irq = irq;
 
+	mutex_init(&st->threshold_m);
+
 	indio_dev->channels = adxl372_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adxl372_channels);
 	indio_dev->available_scan_masks = adxl372_channel_masks;
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &adxl372_info;
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
@@ -949,30 +1224,42 @@ int adxl372_probe(struct device *dev, struct regmap *regmap,
 		return ret;
 	}
 
-	ret = devm_iio_triggered_buffer_setup(dev,
-					      indio_dev, NULL,
-					      adxl372_trigger_handler,
-					      &adxl372_buffer_ops);
+	ret = devm_iio_triggered_buffer_setup_ext(dev,
+						  indio_dev, NULL,
+						  adxl372_trigger_handler,
+						  IIO_BUFFER_DIRECTION_IN,
+						  &adxl372_buffer_ops,
+						  adxl372_fifo_attributes);
 	if (ret < 0)
 		return ret;
 
-	iio_buffer_set_attrs(indio_dev->buffer, adxl372_fifo_attributes);
-
 	if (st->irq) {
 		st->dready_trig = devm_iio_trigger_alloc(dev,
 							 "%s-dev%d",
 							 indio_dev->name,
-							 indio_dev->id);
+							 iio_device_id(indio_dev));
 		if (st->dready_trig == NULL)
 			return -ENOMEM;
 
+		st->peak_datardy_trig = devm_iio_trigger_alloc(dev,
+							       "%s-dev%d-peak",
+							       indio_dev->name,
+							       iio_device_id(indio_dev));
+		if (!st->peak_datardy_trig)
+			return -ENOMEM;
+
 		st->dready_trig->ops = &adxl372_trigger_ops;
-		st->dready_trig->dev.parent = dev;
+		st->peak_datardy_trig->ops = &adxl372_peak_data_trigger_ops;
 		iio_trigger_set_drvdata(st->dready_trig, indio_dev);
+		iio_trigger_set_drvdata(st->peak_datardy_trig, indio_dev);
 		ret = devm_iio_trigger_register(dev, st->dready_trig);
 		if (ret < 0)
 			return ret;
 
+		ret = devm_iio_trigger_register(dev, st->peak_datardy_trig);
+		if (ret < 0)
+			return ret;
+
 		indio_dev->trig = iio_trigger_get(st->dready_trig);
 
 		ret = devm_request_threaded_irq(dev, st->irq,
@@ -986,7 +1273,7 @@ int adxl372_probe(struct device *dev, struct regmap *regmap,
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(adxl372_probe);
+EXPORT_SYMBOL_NS_GPL(adxl372_probe, IIO_ADXL372);
 
 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
 MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer driver");
diff --git a/drivers/iio/accel/adxl372_i2c.c b/drivers/iio/accel/adxl372_i2c.c
index e1affe480c77..4efb70a5fe40 100644
--- a/drivers/iio/accel/adxl372_i2c.c
+++ b/drivers/iio/accel/adxl372_i2c.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
 
@@ -46,9 +47,16 @@ static const struct i2c_device_id adxl372_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, adxl372_i2c_id);
 
+static const struct of_device_id adxl372_of_match[] = {
+	{ .compatible = "adi,adxl372" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, adxl372_of_match);
+
 static struct i2c_driver adxl372_i2c_driver = {
 	.driver = {
 		.name = "adxl372_i2c",
+		.of_match_table = adxl372_of_match,
 	},
 	.probe = adxl372_i2c_probe,
 	.id_table = adxl372_i2c_id,
@@ -59,3 +67,4 @@ module_i2c_driver(adxl372_i2c_driver);
 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
 MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer I2C driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_ADXL372);
diff --git a/drivers/iio/accel/adxl372_spi.c b/drivers/iio/accel/adxl372_spi.c
index 3ef7e3a4804e..2bd267a22f29 100644
--- a/drivers/iio/accel/adxl372_spi.c
+++ b/drivers/iio/accel/adxl372_spi.c
@@ -40,8 +40,8 @@ static const struct spi_device_id adxl372_spi_id[] = {
 MODULE_DEVICE_TABLE(spi, adxl372_spi_id);
 
 static const struct of_device_id adxl372_of_match[] = {
-        { .compatible = "adi,adxl372" },
-        { },
+	{ .compatible = "adi,adxl372" },
+	{ }
 };
 MODULE_DEVICE_TABLE(of, adxl372_of_match);
 
@@ -59,3 +59,4 @@ module_spi_driver(adxl372_spi_driver);
 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
 MODULE_DESCRIPTION("Analog Devices ADXL372 3-axis accelerometer SPI driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_ADXL372);
diff --git a/drivers/iio/accel/bma180.c b/drivers/iio/accel/bma180.c
index fcd91d5f05fd..d03fc3400f94 100644
--- a/drivers/iio/accel/bma180.c
+++ b/drivers/iio/accel/bma180.c
@@ -7,9 +7,9 @@
  * Support for BMA250 (c) Peter Meerwald <pmeerw@pmeerw.net>
  *
  * SPI is not supported by driver
+ * BMA023/BMA150/SMB380: 7-bit I2C slave address 0x38
  * BMA180: 7-bit I2C slave address 0x40 or 0x41
  * BMA250: 7-bit I2C slave address 0x18 or 0x19
- * BMA254: 7-bit I2C slave address 0x18 or 0x19
  */
 
 #include <linux/module.h>
@@ -33,9 +33,10 @@
 #define BMA180_IRQ_NAME "bma180_event"
 
 enum chip_ids {
+	BMA023,
+	BMA150,
 	BMA180,
 	BMA250,
-	BMA254,
 };
 
 struct bma180_data;
@@ -48,22 +49,33 @@ struct bma180_part_info {
 	unsigned int num_scales;
 	const int *bw_table;
 	unsigned int num_bw;
-	int center_temp;
+	int temp_offset;
 
 	u8 int_reset_reg, int_reset_mask;
 	u8 sleep_reg, sleep_mask;
-	u8 bw_reg, bw_mask;
+	u8 bw_reg, bw_mask, bw_offset;
 	u8 scale_reg, scale_mask;
 	u8 power_reg, power_mask, lowpower_val;
 	u8 int_enable_reg, int_enable_mask;
-	u8 int_map_reg, int_enable_dataready_int1_mask;
-	u8 softreset_reg;
+	u8 softreset_reg, softreset_val;
 
 	int (*chip_config)(struct bma180_data *data);
 	void (*chip_disable)(struct bma180_data *data);
 };
 
 /* Register set */
+#define BMA023_CTRL_REG0	0x0a
+#define BMA023_CTRL_REG1	0x0b
+#define BMA023_CTRL_REG2	0x14
+#define BMA023_CTRL_REG3	0x15
+
+#define BMA023_RANGE_MASK	GENMASK(4, 3) /* Range of accel values */
+#define BMA023_BW_MASK		GENMASK(2, 0) /* Accel bandwidth */
+#define BMA023_SLEEP		BIT(0)
+#define BMA023_INT_RESET_MASK	BIT(6)
+#define BMA023_NEW_DATA_INT	BIT(5) /* Intr every new accel data is ready */
+#define BMA023_RESET_VAL	BIT(1)
+
 #define BMA180_CHIP_ID		0x00 /* Need to distinguish BMA180 from other */
 #define BMA180_ACC_X_LSB	0x02 /* First of 6 registers of accel data */
 #define BMA180_TEMP		0x08
@@ -94,9 +106,9 @@ struct bma180_part_info {
 /* We have to write this value in reset register to do soft reset */
 #define BMA180_RESET_VAL	0xb6
 
+#define BMA023_ID_REG_VAL	0x02
 #define BMA180_ID_REG_VAL	0x03
 #define BMA250_ID_REG_VAL	0x03
-#define BMA254_ID_REG_VAL	0xfa /* 250 decimal */
 
 /* Chip power modes */
 #define BMA180_LOW_POWER	0x03
@@ -111,29 +123,13 @@ struct bma180_part_info {
 
 #define BMA250_RANGE_MASK	GENMASK(3, 0) /* Range of accel values */
 #define BMA250_BW_MASK		GENMASK(4, 0) /* Accel bandwidth */
+#define BMA250_BW_OFFSET	8
 #define BMA250_SUSPEND_MASK	BIT(7) /* chip will sleep */
 #define BMA250_LOWPOWER_MASK	BIT(6)
 #define BMA250_DATA_INTEN_MASK	BIT(4)
 #define BMA250_INT1_DATA_MASK	BIT(0)
 #define BMA250_INT_RESET_MASK	BIT(7) /* Reset pending interrupts */
 
-#define BMA254_RANGE_REG	0x0f
-#define BMA254_BW_REG		0x10
-#define BMA254_POWER_REG	0x11
-#define BMA254_RESET_REG	0x14
-#define BMA254_INT_ENABLE_REG	0x17
-#define BMA254_INT_MAP_REG	0x1a
-#define BMA254_INT_RESET_REG	0x21
-
-#define BMA254_RANGE_MASK	GENMASK(3, 0) /* Range of accel values */
-#define BMA254_BW_MASK		GENMASK(4, 0) /* Accel bandwidth */
-#define BMA254_SUSPEND_MASK	BIT(7) /* chip will sleep */
-#define BMA254_LOWPOWER_MASK	BIT(6)
-#define BMA254_DATA_INTEN_MASK	BIT(4)
-#define BMA254_INT2_DATA_MASK	BIT(7)
-#define BMA254_INT1_DATA_MASK	BIT(0)
-#define BMA254_INT_RESET_MASK	BIT(7) /* Reset pending interrupts */
-
 struct bma180_data {
 	struct regulator *vdd_supply;
 	struct regulator *vddio_supply;
@@ -146,7 +142,11 @@ struct bma180_data {
 	int scale;
 	int bw;
 	bool pmode;
-	u8 buff[16]; /* 3x 16-bit + 8-bit + padding + timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		s16 chan[4];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 enum bma180_chan {
@@ -156,11 +156,14 @@ enum bma180_chan {
 	TEMP
 };
 
+static int bma023_bw_table[] = { 25, 50, 100, 190, 375, 750, 1500 }; /* Hz */
+static int bma023_scale_table[] = { 2452, 4903, 9709, };
+
 static int bma180_bw_table[] = { 10, 20, 40, 75, 150, 300 }; /* Hz */
 static int bma180_scale_table[] = { 1275, 1863, 2452, 3727, 4903, 9709, 19417 };
 
-static int bma25x_bw_table[] = { 8, 16, 31, 63, 125, 250 }; /* Hz */
-static int bma25x_scale_table[] = { 0, 0, 0, 38344, 0, 76590, 0, 0, 153180, 0,
+static int bma250_bw_table[] = { 8, 16, 31, 63, 125, 250, 500, 1000 }; /* Hz */
+static int bma250_scale_table[] = { 0, 0, 0, 38344, 0, 76590, 0, 0, 153180, 0,
 	0, 0, 306458 };
 
 static int bma180_get_data_reg(struct bma180_data *data, enum bma180_chan chan)
@@ -264,7 +267,8 @@ static int bma180_set_bw(struct bma180_data *data, int val)
 	for (i = 0; i < data->part_info->num_bw; ++i) {
 		if (data->part_info->bw_table[i] == val) {
 			ret = bma180_set_bits(data, data->part_info->bw_reg,
-				data->part_info->bw_mask, i);
+				data->part_info->bw_mask,
+				i + data->part_info->bw_offset);
 			if (ret) {
 				dev_err(&data->client->dev,
 					"failed to set bandwidth\n");
@@ -319,7 +323,8 @@ static int bma180_set_pmode(struct bma180_data *data, bool mode)
 static int bma180_soft_reset(struct bma180_data *data)
 {
 	int ret = i2c_smbus_write_byte_data(data->client,
-		data->part_info->softreset_reg, BMA180_RESET_VAL);
+		data->part_info->softreset_reg,
+		data->part_info->softreset_val);
 
 	if (ret)
 		dev_err(&data->client->dev, "failed to reset the chip\n");
@@ -349,11 +354,28 @@ static int bma180_chip_init(struct bma180_data *data)
 	 */
 	msleep(20);
 
-	ret = bma180_set_new_data_intr_state(data, false);
+	return bma180_set_new_data_intr_state(data, false);
+}
+
+static int bma023_chip_config(struct bma180_data *data)
+{
+	int ret = bma180_chip_init(data);
+
 	if (ret)
-		return ret;
+		goto err;
+
+	ret = bma180_set_bw(data, 50); /* 50 Hz */
+	if (ret)
+		goto err;
+	ret = bma180_set_scale(data, 2452); /* 2 G */
+	if (ret)
+		goto err;
+
+	return 0;
 
-	return bma180_set_pmode(data, false);
+err:
+	dev_err(&data->client->dev, "failed to config the chip\n");
+	return ret;
 }
 
 static int bma180_chip_config(struct bma180_data *data)
@@ -362,6 +384,9 @@ static int bma180_chip_config(struct bma180_data *data)
 
 	if (ret)
 		goto err;
+	ret = bma180_set_pmode(data, false);
+	if (ret)
+		goto err;
 	ret = bma180_set_bits(data, BMA180_CTRL_REG0, BMA180_DIS_WAKE_UP, 1);
 	if (ret)
 		goto err;
@@ -385,12 +410,15 @@ err:
 	return ret;
 }
 
-static int bma25x_chip_config(struct bma180_data *data)
+static int bma250_chip_config(struct bma180_data *data)
 {
 	int ret = bma180_chip_init(data);
 
 	if (ret)
 		goto err;
+	ret = bma180_set_pmode(data, false);
+	if (ret)
+		goto err;
 	ret = bma180_set_bw(data, 16); /* 16 Hz */
 	if (ret)
 		goto err;
@@ -401,8 +429,7 @@ static int bma25x_chip_config(struct bma180_data *data)
 	 * This enables dataready interrupt on the INT1 pin
 	 * FIXME: support using the INT2 pin
 	 */
-	ret = bma180_set_bits(data, data->part_info->int_map_reg,
-		data->part_info->int_enable_dataready_int1_mask, 1);
+	ret = bma180_set_bits(data, BMA250_INT_MAP_REG, BMA250_INT1_DATA_MASK, 1);
 	if (ret)
 		goto err;
 
@@ -413,6 +440,17 @@ err:
 	return ret;
 }
 
+static void bma023_chip_disable(struct bma180_data *data)
+{
+	if (bma180_set_sleep_state(data, true))
+		goto err;
+
+	return;
+
+err:
+	dev_err(&data->client->dev, "failed to disable the chip\n");
+}
+
 static void bma180_chip_disable(struct bma180_data *data)
 {
 	if (bma180_set_new_data_intr_state(data, false))
@@ -428,7 +466,7 @@ err:
 	dev_err(&data->client->dev, "failed to disable the chip\n");
 }
 
-static void bma25x_chip_disable(struct bma180_data *data)
+static void bma250_chip_disable(struct bma180_data *data)
 {
 	if (bma180_set_new_data_intr_state(data, false))
 		goto err;
@@ -512,8 +550,12 @@ static int bma180_read_raw(struct iio_dev *indio_dev,
 		iio_device_release_direct_mode(indio_dev);
 		if (ret < 0)
 			return ret;
-		*val = sign_extend32(ret >> chan->scan_type.shift,
-			chan->scan_type.realbits - 1);
+		if (chan->scan_type.sign == 's') {
+			*val = sign_extend32(ret >> chan->scan_type.shift,
+				chan->scan_type.realbits - 1);
+		} else {
+			*val = ret;
+		}
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
 		*val = data->bw;
@@ -531,7 +573,7 @@ static int bma180_read_raw(struct iio_dev *indio_dev,
 			return -EINVAL;
 		}
 	case IIO_CHAN_INFO_OFFSET:
-		*val = data->part_info->center_temp;
+		*val = data->part_info->temp_offset;
 		return IIO_VAL_INT;
 	default:
 		return -EINVAL;
@@ -609,13 +651,47 @@ static const struct iio_enum bma180_power_mode_enum = {
 	.set = bma180_set_power_mode,
 };
 
+static const struct iio_chan_spec_ext_info bma023_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
+	{ }
+};
+
 static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
-	IIO_ENUM("power_mode", true, &bma180_power_mode_enum),
-	IIO_ENUM_AVAILABLE("power_mode", &bma180_power_mode_enum),
+	IIO_ENUM("power_mode", IIO_SHARED_BY_TYPE, &bma180_power_mode_enum),
+	IIO_ENUM_AVAILABLE("power_mode", IIO_SHARED_BY_TYPE, &bma180_power_mode_enum),
 	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bma180_accel_get_mount_matrix),
 	{ }
 };
 
+#define BMA023_ACC_CHANNEL(_axis, _bits) {				\
+	.type = IIO_ACCEL,						\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##_axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
+		BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),	\
+	.scan_index = AXIS_##_axis,					\
+	.scan_type = {							\
+		.sign = 's',						\
+		.realbits = _bits,					\
+		.storagebits = 16,					\
+		.shift = 16 - _bits,					\
+	},								\
+	.ext_info = bma023_ext_info,					\
+}
+
+#define BMA150_TEMP_CHANNEL {						\
+	.type = IIO_TEMP,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET),	\
+	.scan_index = TEMP,						\
+	.scan_type = {							\
+		.sign = 'u',						\
+		.realbits = 8,						\
+		.storagebits = 16,					\
+	},								\
+}
+
 #define BMA180_ACC_CHANNEL(_axis, _bits) {				\
 	.type = IIO_ACCEL,						\
 	.modified = 1,							\
@@ -645,6 +721,21 @@ static const struct iio_chan_spec_ext_info bma180_ext_info[] = {
 	},								\
 }
 
+static const struct iio_chan_spec bma023_channels[] = {
+	BMA023_ACC_CHANNEL(X, 10),
+	BMA023_ACC_CHANNEL(Y, 10),
+	BMA023_ACC_CHANNEL(Z, 10),
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+static const struct iio_chan_spec bma150_channels[] = {
+	BMA023_ACC_CHANNEL(X, 10),
+	BMA023_ACC_CHANNEL(Y, 10),
+	BMA023_ACC_CHANNEL(Z, 10),
+	BMA150_TEMP_CHANNEL,
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
 static const struct iio_chan_spec bma180_channels[] = {
 	BMA180_ACC_CHANNEL(X, 14),
 	BMA180_ACC_CHANNEL(Y, 14),
@@ -661,15 +752,64 @@ static const struct iio_chan_spec bma250_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(4),
 };
 
-static const struct iio_chan_spec bma254_channels[] = {
-	BMA180_ACC_CHANNEL(X, 12),
-	BMA180_ACC_CHANNEL(Y, 12),
-	BMA180_ACC_CHANNEL(Z, 12),
-	BMA180_TEMP_CHANNEL,
-	IIO_CHAN_SOFT_TIMESTAMP(4),
-};
-
 static const struct bma180_part_info bma180_part_info[] = {
+	[BMA023] = {
+		.chip_id = BMA023_ID_REG_VAL,
+		.channels = bma023_channels,
+		.num_channels = ARRAY_SIZE(bma023_channels),
+		.scale_table = bma023_scale_table,
+		.num_scales = ARRAY_SIZE(bma023_scale_table),
+		.bw_table = bma023_bw_table,
+		.num_bw = ARRAY_SIZE(bma023_bw_table),
+		/* No temperature channel */
+		.temp_offset = 0,
+		.int_reset_reg = BMA023_CTRL_REG0,
+		.int_reset_mask = BMA023_INT_RESET_MASK,
+		.sleep_reg = BMA023_CTRL_REG0,
+		.sleep_mask = BMA023_SLEEP,
+		.bw_reg = BMA023_CTRL_REG2,
+		.bw_mask = BMA023_BW_MASK,
+		.scale_reg = BMA023_CTRL_REG2,
+		.scale_mask = BMA023_RANGE_MASK,
+		/* No power mode on bma023 */
+		.power_reg = 0,
+		.power_mask = 0,
+		.lowpower_val = 0,
+		.int_enable_reg = BMA023_CTRL_REG3,
+		.int_enable_mask = BMA023_NEW_DATA_INT,
+		.softreset_reg = BMA023_CTRL_REG0,
+		.softreset_val = BMA023_RESET_VAL,
+		.chip_config = bma023_chip_config,
+		.chip_disable = bma023_chip_disable,
+	},
+	[BMA150] = {
+		.chip_id = BMA023_ID_REG_VAL,
+		.channels = bma150_channels,
+		.num_channels = ARRAY_SIZE(bma150_channels),
+		.scale_table = bma023_scale_table,
+		.num_scales = ARRAY_SIZE(bma023_scale_table),
+		.bw_table = bma023_bw_table,
+		.num_bw = ARRAY_SIZE(bma023_bw_table),
+		.temp_offset = -60, /* 0 LSB @ -30 degree C */
+		.int_reset_reg = BMA023_CTRL_REG0,
+		.int_reset_mask = BMA023_INT_RESET_MASK,
+		.sleep_reg = BMA023_CTRL_REG0,
+		.sleep_mask = BMA023_SLEEP,
+		.bw_reg = BMA023_CTRL_REG2,
+		.bw_mask = BMA023_BW_MASK,
+		.scale_reg = BMA023_CTRL_REG2,
+		.scale_mask = BMA023_RANGE_MASK,
+		/* No power mode on bma150 */
+		.power_reg = 0,
+		.power_mask = 0,
+		.lowpower_val = 0,
+		.int_enable_reg = BMA023_CTRL_REG3,
+		.int_enable_mask = BMA023_NEW_DATA_INT,
+		.softreset_reg = BMA023_CTRL_REG0,
+		.softreset_val = BMA023_RESET_VAL,
+		.chip_config = bma023_chip_config,
+		.chip_disable = bma023_chip_disable,
+	},
 	[BMA180] = {
 		.chip_id = BMA180_ID_REG_VAL,
 		.channels = bma180_channels,
@@ -678,7 +818,7 @@ static const struct bma180_part_info bma180_part_info[] = {
 		.num_scales = ARRAY_SIZE(bma180_scale_table),
 		.bw_table = bma180_bw_table,
 		.num_bw = ARRAY_SIZE(bma180_bw_table),
-		.center_temp = 48, /* 0 LSB @ 24 degree C */
+		.temp_offset = 48, /* 0 LSB @ 24 degree C */
 		.int_reset_reg = BMA180_CTRL_REG0,
 		.int_reset_mask = BMA180_RESET_INT,
 		.sleep_reg = BMA180_CTRL_REG0,
@@ -693,6 +833,7 @@ static const struct bma180_part_info bma180_part_info[] = {
 		.int_enable_reg = BMA180_CTRL_REG3,
 		.int_enable_mask = BMA180_NEW_DATA_INT,
 		.softreset_reg = BMA180_RESET,
+		.softreset_val = BMA180_RESET_VAL,
 		.chip_config = bma180_chip_config,
 		.chip_disable = bma180_chip_disable,
 	},
@@ -700,17 +841,18 @@ static const struct bma180_part_info bma180_part_info[] = {
 		.chip_id = BMA250_ID_REG_VAL,
 		.channels = bma250_channels,
 		.num_channels = ARRAY_SIZE(bma250_channels),
-		.scale_table = bma25x_scale_table,
-		.num_scales = ARRAY_SIZE(bma25x_scale_table),
-		.bw_table = bma25x_bw_table,
-		.num_bw = ARRAY_SIZE(bma25x_bw_table),
-		.center_temp = 48, /* 0 LSB @ 24 degree C */
+		.scale_table = bma250_scale_table,
+		.num_scales = ARRAY_SIZE(bma250_scale_table),
+		.bw_table = bma250_bw_table,
+		.num_bw = ARRAY_SIZE(bma250_bw_table),
+		.temp_offset = 48, /* 0 LSB @ 24 degree C */
 		.int_reset_reg = BMA250_INT_RESET_REG,
 		.int_reset_mask = BMA250_INT_RESET_MASK,
 		.sleep_reg = BMA250_POWER_REG,
 		.sleep_mask = BMA250_SUSPEND_MASK,
 		.bw_reg = BMA250_BW_REG,
 		.bw_mask = BMA250_BW_MASK,
+		.bw_offset = BMA250_BW_OFFSET,
 		.scale_reg = BMA250_RANGE_REG,
 		.scale_mask = BMA250_RANGE_MASK,
 		.power_reg = BMA250_POWER_REG,
@@ -718,39 +860,10 @@ static const struct bma180_part_info bma180_part_info[] = {
 		.lowpower_val = 1,
 		.int_enable_reg = BMA250_INT_ENABLE_REG,
 		.int_enable_mask = BMA250_DATA_INTEN_MASK,
-		.int_map_reg = BMA250_INT_MAP_REG,
-		.int_enable_dataready_int1_mask = BMA250_INT1_DATA_MASK,
 		.softreset_reg = BMA250_RESET_REG,
-		.chip_config = bma25x_chip_config,
-		.chip_disable = bma25x_chip_disable,
-	},
-	[BMA254] = {
-		.chip_id = BMA254_ID_REG_VAL,
-		.channels = bma254_channels,
-		.num_channels = ARRAY_SIZE(bma254_channels),
-		.scale_table = bma25x_scale_table,
-		.num_scales = ARRAY_SIZE(bma25x_scale_table),
-		.bw_table = bma25x_bw_table,
-		.num_bw = ARRAY_SIZE(bma25x_bw_table),
-		.center_temp = 46, /* 0 LSB @ 23 degree C */
-		.int_reset_reg = BMA254_INT_RESET_REG,
-		.int_reset_mask = BMA254_INT_RESET_MASK,
-		.sleep_reg = BMA254_POWER_REG,
-		.sleep_mask = BMA254_SUSPEND_MASK,
-		.bw_reg = BMA254_BW_REG,
-		.bw_mask = BMA254_BW_MASK,
-		.scale_reg = BMA254_RANGE_REG,
-		.scale_mask = BMA254_RANGE_MASK,
-		.power_reg = BMA254_POWER_REG,
-		.power_mask = BMA254_LOWPOWER_MASK,
-		.lowpower_val = 1,
-		.int_enable_reg = BMA254_INT_ENABLE_REG,
-		.int_enable_mask = BMA254_DATA_INTEN_MASK,
-		.int_map_reg = BMA254_INT_MAP_REG,
-		.int_enable_dataready_int1_mask = BMA254_INT1_DATA_MASK,
-		.softreset_reg = BMA254_RESET_REG,
-		.chip_config = bma25x_chip_config,
-		.chip_disable = bma25x_chip_disable,
+		.softreset_val = BMA180_RESET_VAL,
+		.chip_config = bma250_chip_config,
+		.chip_disable = bma250_chip_disable,
 	},
 };
 
@@ -771,12 +884,12 @@ static irqreturn_t bma180_trigger_handler(int irq, void *p)
 			mutex_unlock(&data->mutex);
 			goto err;
 		}
-		((s16 *)data->buff)[i++] = ret;
+		data->scan.chan[i++] = ret;
 	}
 
 	mutex_unlock(&data->mutex);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buff, time_ns);
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, time_ns);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
 
@@ -792,17 +905,20 @@ static int bma180_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return bma180_set_new_data_intr_state(data, state);
 }
 
-static int bma180_trig_try_reen(struct iio_trigger *trig)
+static void bma180_trig_reen(struct iio_trigger *trig)
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct bma180_data *data = iio_priv(indio_dev);
+	int ret;
 
-	return bma180_reset_intr(data);
+	ret = bma180_reset_intr(data);
+	if (ret)
+		dev_err(&data->client->dev, "failed to reset interrupt\n");
 }
 
 static const struct iio_trigger_ops bma180_trigger_ops = {
 	.set_trigger_state = bma180_data_rdy_trigger_set_state,
-	.try_reenable = bma180_trig_try_reen,
+	.reenable = bma180_trig_reen,
 };
 
 static int bma180_probe(struct i2c_client *client,
@@ -822,30 +938,25 @@ static int bma180_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 	if (client->dev.of_node)
-		chip = (enum chip_ids)of_device_get_match_data(dev);
+		chip = (uintptr_t)of_device_get_match_data(dev);
 	else
 		chip = id->driver_data;
 	data->part_info = &bma180_part_info[chip];
 
-	ret = iio_read_mount_matrix(dev, "mount-matrix",
-				&data->orientation);
+	ret = iio_read_mount_matrix(dev, &data->orientation);
 	if (ret)
 		return ret;
 
 	data->vdd_supply = devm_regulator_get(dev, "vdd");
-	if (IS_ERR(data->vdd_supply)) {
-		if (PTR_ERR(data->vdd_supply) != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get vdd regulator %d\n",
-				(int)PTR_ERR(data->vdd_supply));
-		return PTR_ERR(data->vdd_supply);
-	}
+	if (IS_ERR(data->vdd_supply))
+		return dev_err_probe(dev, PTR_ERR(data->vdd_supply),
+				     "Failed to get vdd regulator\n");
+
 	data->vddio_supply = devm_regulator_get(dev, "vddio");
-	if (IS_ERR(data->vddio_supply)) {
-		if (PTR_ERR(data->vddio_supply) != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get vddio regulator %d\n",
-				(int)PTR_ERR(data->vddio_supply));
-		return PTR_ERR(data->vddio_supply);
-	}
+	if (IS_ERR(data->vddio_supply))
+		return dev_err_probe(dev, PTR_ERR(data->vddio_supply),
+				     "Failed to get vddio regulator\n");
+
 	/* Typical voltage 2.4V these are min and max */
 	ret = regulator_set_voltage(data->vdd_supply, 1620000, 3600000);
 	if (ret)
@@ -871,7 +982,6 @@ static int bma180_probe(struct i2c_client *client,
 		goto err_chip_disable;
 
 	mutex_init(&data->mutex);
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = data->part_info->channels;
 	indio_dev->num_channels = data->part_info->num_channels;
 	indio_dev->name = id->name;
@@ -879,8 +989,8 @@ static int bma180_probe(struct i2c_client *client,
 	indio_dev->info = &bma180_info;
 
 	if (client->irq > 0) {
-		data->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
-			indio_dev->id);
+		data->trig = iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
+					       iio_device_id(indio_dev));
 		if (!data->trig) {
 			ret = -ENOMEM;
 			goto err_chip_disable;
@@ -894,14 +1004,14 @@ static int bma180_probe(struct i2c_client *client,
 			goto err_trigger_free;
 		}
 
-		data->trig->dev.parent = dev;
 		data->trig->ops = &bma180_trigger_ops;
 		iio_trigger_set_drvdata(data->trig, indio_dev);
-		indio_dev->trig = iio_trigger_get(data->trig);
 
 		ret = iio_trigger_register(data->trig);
 		if (ret)
 			goto err_trigger_free;
+
+		indio_dev->trig = iio_trigger_get(data->trig);
 	}
 
 	ret = iio_triggered_buffer_setup(indio_dev, NULL,
@@ -935,7 +1045,7 @@ err_disable_vdd:
 	return ret;
 }
 
-static int bma180_remove(struct i2c_client *client)
+static void bma180_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct bma180_data *data = iio_priv(indio_dev);
@@ -952,11 +1062,8 @@ static int bma180_remove(struct i2c_client *client)
 	mutex_unlock(&data->mutex);
 	regulator_disable(data->vddio_supply);
 	regulator_disable(data->vdd_supply);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int bma180_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -983,16 +1090,14 @@ static int bma180_resume(struct device *dev)
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
-#define BMA180_PM_OPS (&bma180_pm_ops)
-#else
-#define BMA180_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(bma180_pm_ops, bma180_suspend, bma180_resume);
 
 static const struct i2c_device_id bma180_ids[] = {
+	{ "bma023", BMA023 },
+	{ "bma150", BMA150 },
 	{ "bma180", BMA180 },
 	{ "bma250", BMA250 },
-	{ "bma254", BMA254 },
+	{ "smb380", BMA150 },
 	{ }
 };
 
@@ -1000,6 +1105,14 @@ MODULE_DEVICE_TABLE(i2c, bma180_ids);
 
 static const struct of_device_id bma180_of_match[] = {
 	{
+		.compatible = "bosch,bma023",
+		.data = (void *)BMA023
+	},
+	{
+		.compatible = "bosch,bma150",
+		.data = (void *)BMA150
+	},
+	{
 		.compatible = "bosch,bma180",
 		.data = (void *)BMA180
 	},
@@ -1008,8 +1121,8 @@ static const struct of_device_id bma180_of_match[] = {
 		.data = (void *)BMA250
 	},
 	{
-		.compatible = "bosch,bma254",
-		.data = (void *)BMA254
+		.compatible = "bosch,smb380",
+		.data = (void *)BMA150
 	},
 	{ }
 };
@@ -1018,7 +1131,7 @@ MODULE_DEVICE_TABLE(of, bma180_of_match);
 static struct i2c_driver bma180_driver = {
 	.driver = {
 		.name	= "bma180",
-		.pm	= BMA180_PM_OPS,
+		.pm	= pm_sleep_ptr(&bma180_pm_ops),
 		.of_match_table = bma180_of_match,
 	},
 	.probe		= bma180_probe,
@@ -1030,5 +1143,5 @@ module_i2c_driver(bma180_driver);
 
 MODULE_AUTHOR("Kravchenko Oleksandr <x0199363@ti.com>");
 MODULE_AUTHOR("Texas Instruments, Inc.");
-MODULE_DESCRIPTION("Bosch BMA180/BMA25x triaxial acceleration sensor");
+MODULE_DESCRIPTION("Bosch BMA023/BMA1x0/BMA250 triaxial acceleration sensor");
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/accel/bma220_spi.c b/drivers/iio/accel/bma220_spi.c
index cae905039cb6..fcbd695e4654 100644
--- a/drivers/iio/accel/bma220_spi.c
+++ b/drivers/iio/accel/bma220_spi.c
@@ -1,17 +1,19 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * BMA220 Digital triaxial acceleration sensor driver
  *
- * Copyright (c) 2016, Intel Corporation.
+ * Copyright (c) 2016,2020 Intel Corporation.
  */
 
-#include <linux/acpi.h>
+#include <linux/bits.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/spi/spi.h>
+
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
-#include <linux/spi/spi.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 
@@ -23,14 +25,12 @@
 #define BMA220_REG_SUSPEND			0x18
 
 #define BMA220_CHIP_ID				0xDD
-#define BMA220_READ_MASK			0x80
-#define BMA220_RANGE_MASK			0x03
-#define BMA220_DATA_SHIFT			2
+#define BMA220_READ_MASK			BIT(7)
+#define BMA220_RANGE_MASK			GENMASK(1, 0)
 #define BMA220_SUSPEND_SLEEP			0xFF
 #define BMA220_SUSPEND_WAKE			0x00
 
 #define BMA220_DEVICE_NAME			"bma220"
-#define BMA220_SCALE_AVAILABLE			"0.623 1.248 2.491 4.983"
 
 #define BMA220_ACCEL_CHANNEL(index, reg, axis) {			\
 	.type = IIO_ACCEL,						\
@@ -44,7 +44,7 @@
 		.sign = 's',						\
 		.realbits = 6,						\
 		.storagebits = 8,					\
-		.shift = BMA220_DATA_SHIFT,				\
+		.shift = 2,						\
 		.endianness = IIO_CPU,					\
 	},								\
 }
@@ -55,26 +55,19 @@ enum bma220_axis {
 	AXIS_Z,
 };
 
-static IIO_CONST_ATTR(in_accel_scale_available, BMA220_SCALE_AVAILABLE);
-
-static struct attribute *bma220_attributes[] = {
-	&iio_const_attr_in_accel_scale_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group bma220_attribute_group = {
-	.attrs = bma220_attributes,
-};
-
-static const int bma220_scale_table[][4] = {
-	{0, 623000}, {1, 248000}, {2, 491000}, {4, 983000}
+static const int bma220_scale_table[][2] = {
+	{0, 623000}, {1, 248000}, {2, 491000}, {4, 983000},
 };
 
 struct bma220_data {
 	struct spi_device *spi_device;
 	struct mutex lock;
-	s8 buffer[16]; /* 3x8-bit channels + 5x8 padding + 8x8 timestamp */
-	u8 tx_buf[2] ____cacheline_aligned;
+	struct {
+		s8 chans[3];
+		/* Ensure timestamp is naturally aligned. */
+		s64 timestamp __aligned(8);
+	} scan;
+	u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const struct iio_chan_spec bma220_channels[] = {
@@ -104,12 +97,12 @@ static irqreturn_t bma220_trigger_handler(int irq, void *p)
 
 	mutex_lock(&data->lock);
 	data->tx_buf[0] = BMA220_REG_ACCEL_X | BMA220_READ_MASK;
-	ret = spi_write_then_read(spi, data->tx_buf, 1, data->buffer,
+	ret = spi_write_then_read(spi, data->tx_buf, 1, &data->scan.chans,
 				  ARRAY_SIZE(bma220_channels) - 1);
 	if (ret < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 err:
 	mutex_unlock(&data->lock);
@@ -131,7 +124,8 @@ static int bma220_read_raw(struct iio_dev *indio_dev,
 		ret = bma220_read_reg(data->spi_device, chan->address);
 		if (ret < 0)
 			return -EINVAL;
-		*val = sign_extend32(ret >> BMA220_DATA_SHIFT, 5);
+		*val = sign_extend32(ret >> chan->scan_type.shift,
+				     chan->scan_type.realbits - 1);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		ret = bma220_read_reg(data->spi_device, BMA220_REG_RANGE);
@@ -182,10 +176,26 @@ static int bma220_write_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
+static int bma220_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (int *)bma220_scale_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(bma220_scale_table) * 2;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
 static const struct iio_info bma220_info = {
 	.read_raw		= bma220_read_raw,
 	.write_raw		= bma220_write_raw,
-	.attrs			= &bma220_attribute_group,
+	.read_avail		= bma220_read_avail,
 };
 
 static int bma220_init(struct spi_device *spi)
@@ -198,26 +208,43 @@ static int bma220_init(struct spi_device *spi)
 
 	/* Make sure the chip is powered on */
 	ret = bma220_read_reg(spi, BMA220_REG_SUSPEND);
+	if (ret == BMA220_SUSPEND_WAKE)
+		ret = bma220_read_reg(spi, BMA220_REG_SUSPEND);
 	if (ret < 0)
 		return ret;
-	else if (ret == BMA220_SUSPEND_WAKE)
-		return bma220_read_reg(spi, BMA220_REG_SUSPEND);
+	if (ret == BMA220_SUSPEND_WAKE)
+		return -EBUSY;
 
 	return 0;
 }
 
-static int bma220_deinit(struct spi_device *spi)
+static int bma220_power(struct spi_device *spi, bool up)
 {
-	int ret;
+	int i, ret;
+
+	/**
+	 * The chip can be suspended/woken up by a simple register read.
+	 * So, we need up to 2 register reads of the suspend register
+	 * to make sure that the device is in the desired state.
+	 */
+	for (i = 0; i < 2; i++) {
+		ret = bma220_read_reg(spi, BMA220_REG_SUSPEND);
+		if (ret < 0)
+			return ret;
 
-	/* Make sure the chip is powered off */
-	ret = bma220_read_reg(spi, BMA220_REG_SUSPEND);
-	if (ret < 0)
-		return ret;
-	else if (ret == BMA220_SUSPEND_SLEEP)
-		return bma220_read_reg(spi, BMA220_REG_SUSPEND);
+		if (up && ret == BMA220_SUSPEND_SLEEP)
+			return 0;
 
-	return 0;
+		if (!up && ret == BMA220_SUSPEND_WAKE)
+			return 0;
+	}
+
+	return -EBUSY;
+}
+
+static void bma220_deinit(void *spi)
+{
+	bma220_power(spi, false);
 }
 
 static int bma220_probe(struct spi_device *spi)
@@ -234,10 +261,8 @@ static int bma220_probe(struct spi_device *spi)
 
 	data = iio_priv(indio_dev);
 	data->spi_device = spi;
-	spi_set_drvdata(spi, indio_dev);
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &bma220_info;
 	indio_dev->name = BMA220_DEVICE_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -246,63 +271,38 @@ static int bma220_probe(struct spi_device *spi)
 	indio_dev->available_scan_masks = bma220_accel_scan_masks;
 
 	ret = bma220_init(data->spi_device);
-	if (ret < 0)
+	if (ret)
 		return ret;
 
-	ret = iio_triggered_buffer_setup(indio_dev, iio_pollfunc_store_time,
-					 bma220_trigger_handler, NULL);
-	if (ret < 0) {
-		dev_err(&spi->dev, "iio triggered buffer setup failed\n");
-		goto err_suspend;
-	}
+	ret = devm_add_action_or_reset(&spi->dev, bma220_deinit, spi);
+	if (ret)
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      bma220_trigger_handler, NULL);
 	if (ret < 0) {
-		dev_err(&spi->dev, "iio_device_register failed\n");
-		iio_triggered_buffer_cleanup(indio_dev);
-		goto err_suspend;
+		dev_err(&spi->dev, "iio triggered buffer setup failed\n");
+		return ret;
 	}
 
-	return 0;
-
-err_suspend:
-	return bma220_deinit(spi);
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
-static int bma220_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	return bma220_deinit(spi);
-}
-
-#ifdef CONFIG_PM_SLEEP
 static int bma220_suspend(struct device *dev)
 {
-	struct bma220_data *data =
-			iio_priv(spi_get_drvdata(to_spi_device(dev)));
+	struct spi_device *spi = to_spi_device(dev);
 
-	/* The chip can be suspended/woken up by a simple register read. */
-	return bma220_read_reg(data->spi_device, BMA220_REG_SUSPEND);
+	return bma220_power(spi, false);
 }
 
 static int bma220_resume(struct device *dev)
 {
-	struct bma220_data *data =
-			iio_priv(spi_get_drvdata(to_spi_device(dev)));
+	struct spi_device *spi = to_spi_device(dev);
 
-	return bma220_read_reg(data->spi_device, BMA220_REG_SUSPEND);
+	return bma220_power(spi, true);
 }
-
-static SIMPLE_DEV_PM_OPS(bma220_pm_ops, bma220_suspend, bma220_resume);
-
-#define BMA220_PM_OPS (&bma220_pm_ops)
-#else
-#define BMA220_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(bma220_pm_ops, bma220_suspend, bma220_resume);
 
 static const struct spi_device_id bma220_spi_id[] = {
 	{"bma220", 0},
@@ -313,20 +313,17 @@ static const struct acpi_device_id bma220_acpi_id[] = {
 	{"BMA0220", 0},
 	{}
 };
-
 MODULE_DEVICE_TABLE(spi, bma220_spi_id);
 
 static struct spi_driver bma220_driver = {
 	.driver = {
 		.name = "bma220_spi",
-		.pm = BMA220_PM_OPS,
-		.acpi_match_table = ACPI_PTR(bma220_acpi_id),
+		.pm = pm_sleep_ptr(&bma220_pm_ops),
+		.acpi_match_table = bma220_acpi_id,
 	},
 	.probe =            bma220_probe,
-	.remove =           bma220_remove,
 	.id_table =         bma220_spi_id,
 };
-
 module_spi_driver(bma220_driver);
 
 MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>");
diff --git a/drivers/iio/accel/bma400.h b/drivers/iio/accel/bma400.h
index 5ad10db9819f..36edbaff4f7f 100644
--- a/drivers/iio/accel/bma400.h
+++ b/drivers/iio/accel/bma400.h
@@ -39,6 +39,8 @@
 #define BMA400_INT_STAT0_REG        0x0e
 #define BMA400_INT_STAT1_REG        0x0f
 #define BMA400_INT_STAT2_REG        0x10
+#define BMA400_INT12_MAP_REG        0x23
+#define BMA400_INT_ENG_OVRUN_MSK    BIT(4)
 
 /* Temperature register */
 #define BMA400_TEMP_DATA_REG        0x11
@@ -53,6 +55,9 @@
 #define BMA400_STEP_CNT1_REG        0x16
 #define BMA400_STEP_CNT3_REG        0x17
 #define BMA400_STEP_STAT_REG        0x18
+#define BMA400_STEP_INT_MSK         BIT(0)
+#define BMA400_STEP_RAW_LEN         0x03
+#define BMA400_STEP_STAT_MASK       GENMASK(9, 8)
 
 /*
  * Read-write configuration registers
@@ -62,6 +67,13 @@
 #define BMA400_ACC_CONFIG2_REG      0x1b
 #define BMA400_CMD_REG              0x7e
 
+/* Interrupt registers */
+#define BMA400_INT_CONFIG0_REG	    0x1f
+#define BMA400_INT_CONFIG1_REG	    0x20
+#define BMA400_INT1_MAP_REG	    0x21
+#define BMA400_INT_IO_CTRL_REG	    0x24
+#define BMA400_INT_DRDY_MSK	    BIT(7)
+
 /* Chip ID of BMA 400 devices found in the chip ID register. */
 #define BMA400_ID_REG_VAL           0x90
 
@@ -83,8 +95,51 @@
 #define BMA400_ACC_ODR_MIN_WHOLE_HZ 25
 #define BMA400_ACC_ODR_MIN_HZ       12
 
-#define BMA400_SCALE_MIN            38357
-#define BMA400_SCALE_MAX            306864
+/* Generic interrupts register */
+#define BMA400_GEN1INT_CONFIG0      0x3f
+#define BMA400_GEN2INT_CONFIG0      0x4A
+#define BMA400_GEN_CONFIG1_OFF      0x01
+#define BMA400_GEN_CONFIG2_OFF      0x02
+#define BMA400_GEN_CONFIG3_OFF      0x03
+#define BMA400_GEN_CONFIG31_OFF     0x04
+#define BMA400_INT_GEN1_MSK         BIT(2)
+#define BMA400_INT_GEN2_MSK         BIT(3)
+#define BMA400_GEN_HYST_MSK         GENMASK(1, 0)
+
+/* TAP config registers */
+#define BMA400_TAP_CONFIG           0x57
+#define BMA400_TAP_CONFIG1          0x58
+#define BMA400_S_TAP_MSK            BIT(2)
+#define BMA400_D_TAP_MSK            BIT(3)
+#define BMA400_INT_S_TAP_MSK        BIT(10)
+#define BMA400_INT_D_TAP_MSK        BIT(11)
+#define BMA400_TAP_SEN_MSK          GENMASK(2, 0)
+#define BMA400_TAP_TICSTH_MSK       GENMASK(1, 0)
+#define BMA400_TAP_QUIET_MSK        GENMASK(3, 2)
+#define BMA400_TAP_QUIETDT_MSK      GENMASK(5, 4)
+#define BMA400_TAP_TIM_LIST_LEN     4
+
+/*
+ * BMA400_SCALE_MIN macro value represents m/s^2 for 1 LSB before
+ * converting to micro values for +-2g range.
+ *
+ * For +-2g - 1 LSB = 0.976562 milli g = 0.009576 m/s^2
+ * For +-4g - 1 LSB = 1.953125 milli g = 0.019153 m/s^2
+ * For +-16g - 1 LSB = 7.8125 milli g = 0.076614 m/s^2
+ *
+ * The raw value which is used to select the different ranges is determined
+ * by the first bit set position from the scale value, so BMA400_SCALE_MIN
+ * should be odd.
+ *
+ * Scale values for +-2g, +-4g, +-8g and +-16g are populated into bma400_scales
+ * array by left shifting BMA400_SCALE_MIN.
+ * e.g.:
+ * To select +-2g = 9577 << 0 = raw value to write is 0.
+ * To select +-8g = 9577 << 2 = raw value to write is 2.
+ * To select +-16g = 9577 << 3 = raw value to write is 3.
+ */
+#define BMA400_SCALE_MIN            9577
+#define BMA400_SCALE_MAX            76617
 
 #define BMA400_NUM_REGULATORS       2
 #define BMA400_VDD_REGULATOR        0
@@ -92,8 +147,7 @@
 
 extern const struct regmap_config bma400_regmap_config;
 
-int bma400_probe(struct device *dev, struct regmap *regmap, const char *name);
-
-int bma400_remove(struct device *dev);
+int bma400_probe(struct device *dev, struct regmap *regmap, int irq,
+		 const char *name);
 
 #endif
diff --git a/drivers/iio/accel/bma400_core.c b/drivers/iio/accel/bma400_core.c
index cc77f89c048b..ad8fce3e08cd 100644
--- a/drivers/iio/accel/bma400_core.c
+++ b/drivers/iio/accel/bma400_core.c
@@ -11,15 +11,25 @@
  *  - Create channel for sensor time
  */
 
+#include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/device.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#include <asm/unaligned.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 
 #include "bma400.h"
 
@@ -38,6 +48,27 @@ static int bma400_sample_freqs[14];
 
 static const int bma400_osr_range[] = { 0, 1, 3 };
 
+static int tap_reset_timeout[BMA400_TAP_TIM_LIST_LEN] = {
+	300000,
+	400000,
+	500000,
+	600000
+};
+
+static int tap_max2min_time[BMA400_TAP_TIM_LIST_LEN] = {
+	30000,
+	45000,
+	60000,
+	90000
+};
+
+static int double_tap2_min_delay[BMA400_TAP_TIM_LIST_LEN] = {
+	20000,
+	40000,
+	60000,
+	80000
+};
+
 /* See the ACC_CONFIG0 section of the datasheet */
 enum bma400_power_mode {
 	POWER_MODE_SLEEP   = 0x00,
@@ -46,11 +77,24 @@ enum bma400_power_mode {
 	POWER_MODE_INVALID = 0x03,
 };
 
+enum bma400_scan {
+	BMA400_ACCL_X,
+	BMA400_ACCL_Y,
+	BMA400_ACCL_Z,
+	BMA400_TEMP,
+};
+
 struct bma400_sample_freq {
 	int hz;
 	int uhz;
 };
 
+enum bma400_activity {
+	BMA400_STILL,
+	BMA400_WALKING,
+	BMA400_RUNNING,
+};
+
 struct bma400_data {
 	struct device *dev;
 	struct regmap *regmap;
@@ -61,6 +105,20 @@ struct bma400_data {
 	struct bma400_sample_freq sample_freq;
 	int oversampling_ratio;
 	int scale;
+	struct iio_trigger *trig;
+	int steps_enabled;
+	bool step_event_en;
+	bool activity_event_en;
+	unsigned int generic_event_en;
+	unsigned int tap_event_en_bitmask;
+	/* Correct time stamp alignment */
+	struct {
+		__le16 buff[3];
+		u8 temperature;
+		s64 ts __aligned(8);
+	} buffer __aligned(IIO_DMA_MINALIGN);
+	__le16 status;
+	__be16 duration;
 };
 
 static bool bma400_is_writable_reg(struct device *dev, unsigned int reg)
@@ -136,7 +194,7 @@ const struct regmap_config bma400_regmap_config = {
 	.writeable_reg = bma400_is_writable_reg,
 	.volatile_reg = bma400_is_volatile_reg,
 };
-EXPORT_SYMBOL(bma400_regmap_config);
+EXPORT_SYMBOL_NS(bma400_regmap_config, IIO_BMA400);
 
 static const struct iio_mount_matrix *
 bma400_accel_get_mount_matrix(const struct iio_dev *indio_dev,
@@ -152,7 +210,147 @@ static const struct iio_chan_spec_ext_info bma400_ext_info[] = {
 	{ }
 };
 
-#define BMA400_ACC_CHANNEL(_axis) { \
+static const struct iio_event_spec bma400_step_detect_event = {
+	.type = IIO_EV_TYPE_CHANGE,
+	.dir = IIO_EV_DIR_NONE,
+	.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+};
+
+static const struct iio_event_spec bma400_activity_event = {
+	.type = IIO_EV_TYPE_CHANGE,
+	.dir = IIO_EV_DIR_NONE,
+	.mask_shared_by_type = BIT(IIO_EV_INFO_ENABLE),
+};
+
+static const struct iio_event_spec bma400_accel_event[] = {
+	{
+		.type = IIO_EV_TYPE_MAG,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
+				       BIT(IIO_EV_INFO_PERIOD) |
+				       BIT(IIO_EV_INFO_HYSTERESIS) |
+				       BIT(IIO_EV_INFO_ENABLE),
+	},
+	{
+		.type = IIO_EV_TYPE_MAG,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
+				       BIT(IIO_EV_INFO_PERIOD) |
+				       BIT(IIO_EV_INFO_HYSTERESIS) |
+				       BIT(IIO_EV_INFO_ENABLE),
+	},
+	{
+		.type = IIO_EV_TYPE_GESTURE,
+		.dir = IIO_EV_DIR_SINGLETAP,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
+				       BIT(IIO_EV_INFO_ENABLE) |
+				       BIT(IIO_EV_INFO_RESET_TIMEOUT),
+	},
+	{
+		.type = IIO_EV_TYPE_GESTURE,
+		.dir = IIO_EV_DIR_DOUBLETAP,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
+				       BIT(IIO_EV_INFO_ENABLE) |
+				       BIT(IIO_EV_INFO_RESET_TIMEOUT) |
+				       BIT(IIO_EV_INFO_TAP2_MIN_DELAY),
+	},
+};
+
+static int usec_to_tapreg_raw(int usec, const int *time_list)
+{
+	int index;
+
+	for (index = 0; index < BMA400_TAP_TIM_LIST_LEN; index++) {
+		if (usec == time_list[index])
+			return index;
+	}
+	return -EINVAL;
+}
+
+static ssize_t in_accel_gesture_tap_maxtomin_time_show(struct device *dev,
+						       struct device_attribute *attr,
+						       char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret, reg_val, raw, vals[2];
+
+	ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1, &reg_val);
+	if (ret)
+		return ret;
+
+	raw = FIELD_GET(BMA400_TAP_TICSTH_MSK, reg_val);
+	vals[0] = 0;
+	vals[1] = tap_max2min_time[raw];
+
+	return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, 2, vals);
+}
+
+static ssize_t in_accel_gesture_tap_maxtomin_time_store(struct device *dev,
+							struct device_attribute *attr,
+							const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret, val_int, val_fract, raw;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &val_int, &val_fract);
+	if (ret)
+		return ret;
+
+	raw = usec_to_tapreg_raw(val_fract, tap_max2min_time);
+	if (raw < 0)
+		return -EINVAL;
+
+	ret = regmap_update_bits(data->regmap, BMA400_TAP_CONFIG1,
+				 BMA400_TAP_TICSTH_MSK,
+				 FIELD_PREP(BMA400_TAP_TICSTH_MSK, raw));
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR_RW(in_accel_gesture_tap_maxtomin_time, 0);
+
+/*
+ * Tap interrupts works with 200 Hz input data rate and the time based tap
+ * controls are in the terms of data samples so the below calculation is
+ * used to convert the configuration values into seconds.
+ * e.g.:
+ * 60 data samples * 0.005 ms = 0.3 seconds.
+ * 80 data samples * 0.005 ms = 0.4 seconds.
+ */
+
+/* quiet configuration values in seconds */
+static IIO_CONST_ATTR(in_accel_gesture_tap_reset_timeout_available,
+		      "0.3 0.4 0.5 0.6");
+
+/* tics_th configuration values in seconds */
+static IIO_CONST_ATTR(in_accel_gesture_tap_maxtomin_time_available,
+		      "0.03 0.045 0.06 0.09");
+
+/* quiet_dt configuration values in seconds */
+static IIO_CONST_ATTR(in_accel_gesture_doubletap_tap2_min_delay_available,
+		      "0.02 0.04 0.06 0.08");
+
+/* List of sensitivity values available to configure tap interrupts */
+static IIO_CONST_ATTR(in_accel_gesture_tap_value_available, "0 1 2 3 4 5 6 7");
+
+static struct attribute *bma400_event_attributes[] = {
+	&iio_const_attr_in_accel_gesture_tap_value_available.dev_attr.attr,
+	&iio_const_attr_in_accel_gesture_tap_reset_timeout_available.dev_attr.attr,
+	&iio_const_attr_in_accel_gesture_tap_maxtomin_time_available.dev_attr.attr,
+	&iio_const_attr_in_accel_gesture_doubletap_tap2_min_delay_available.dev_attr.attr,
+	&iio_dev_attr_in_accel_gesture_tap_maxtomin_time.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group bma400_event_attribute_group = {
+	.attrs = bma400_event_attributes,
+};
+
+#define BMA400_ACC_CHANNEL(_index, _axis) { \
 	.type = IIO_ACCEL, \
 	.modified = 1, \
 	.channel2 = IIO_MOD_##_axis, \
@@ -164,17 +362,55 @@ static const struct iio_chan_spec_ext_info bma400_ext_info[] = {
 		BIT(IIO_CHAN_INFO_SCALE) | \
 		BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \
 	.ext_info = bma400_ext_info, \
+	.scan_index = _index,	\
+	.scan_type = {		\
+		.sign = 's',	\
+		.realbits = 12,		\
+		.storagebits = 16,	\
+		.endianness = IIO_LE,	\
+	},				\
+	.event_spec = bma400_accel_event,			\
+	.num_event_specs = ARRAY_SIZE(bma400_accel_event)	\
+}
+
+#define BMA400_ACTIVITY_CHANNEL(_chan2) {	\
+	.type = IIO_ACTIVITY,			\
+	.modified = 1,				\
+	.channel2 = _chan2,			\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),	\
+	.scan_index = -1, /* No buffer support */		\
+	.event_spec = &bma400_activity_event,			\
+	.num_event_specs = 1,					\
 }
 
 static const struct iio_chan_spec bma400_channels[] = {
-	BMA400_ACC_CHANNEL(X),
-	BMA400_ACC_CHANNEL(Y),
-	BMA400_ACC_CHANNEL(Z),
+	BMA400_ACC_CHANNEL(0, X),
+	BMA400_ACC_CHANNEL(1, Y),
+	BMA400_ACC_CHANNEL(2, Z),
 	{
 		.type = IIO_TEMP,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.scan_index = 3,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 8,
+			.storagebits = 8,
+			.endianness = IIO_LE,
+		},
+	},
+	{
+		.type = IIO_STEPS,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_ENABLE),
+		.scan_index = -1, /* No buffer support */
+		.event_spec = &bma400_step_detect_event,
+		.num_event_specs = 1,
 	},
+	BMA400_ACTIVITY_CHANNEL(IIO_MOD_STILL),
+	BMA400_ACTIVITY_CHANNEL(IIO_MOD_WALKING),
+	BMA400_ACTIVITY_CHANNEL(IIO_MOD_RUNNING),
+	IIO_CHAN_SOFT_TIMESTAMP(4),
 };
 
 static int bma400_get_temp_reg(struct bma400_data *data, int *val, int *val2)
@@ -542,6 +778,40 @@ static int bma400_set_power_mode(struct bma400_data *data,
 	return 0;
 }
 
+static int bma400_enable_steps(struct bma400_data *data, int val)
+{
+	int ret;
+
+	if (data->steps_enabled == val)
+		return 0;
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT_CONFIG1_REG,
+				 BMA400_STEP_INT_MSK,
+				 FIELD_PREP(BMA400_STEP_INT_MSK, val ? 1 : 0));
+	if (ret)
+		return ret;
+	data->steps_enabled = val;
+	return ret;
+}
+
+static int bma400_get_steps_reg(struct bma400_data *data, int *val)
+{
+	u8 *steps_raw;
+	int ret;
+
+	steps_raw = kmalloc(BMA400_STEP_RAW_LEN, GFP_KERNEL);
+	if (!steps_raw)
+		return -ENOMEM;
+
+	ret = regmap_bulk_read(data->regmap, BMA400_STEP_CNT0_REG,
+			       steps_raw, BMA400_STEP_RAW_LEN);
+	if (ret)
+		return ret;
+	*val = get_unaligned_le24(steps_raw);
+	kfree(steps_raw);
+	return IIO_VAL_INT;
+}
+
 static void bma400_init_tables(void)
 {
 	int raw;
@@ -560,6 +830,40 @@ static void bma400_init_tables(void)
 	}
 }
 
+static void bma400_regulators_disable(void *data_ptr)
+{
+	struct bma400_data *data = data_ptr;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
+}
+
+static void bma400_power_disable(void *data_ptr)
+{
+	struct bma400_data *data = data_ptr;
+	int ret;
+
+	mutex_lock(&data->mutex);
+	ret = bma400_set_power_mode(data, POWER_MODE_SLEEP);
+	mutex_unlock(&data->mutex);
+	if (ret)
+		dev_warn(data->dev, "Failed to put device into sleep mode (%pe)\n",
+			 ERR_PTR(ret));
+}
+
+static enum iio_modifier bma400_act_to_mod(enum bma400_activity activity)
+{
+	switch (activity) {
+	case BMA400_STILL:
+		return IIO_MOD_STILL;
+	case BMA400_WALKING:
+		return IIO_MOD_WALKING;
+	case BMA400_RUNNING:
+		return IIO_MOD_RUNNING;
+	default:
+		return IIO_NO_MOD;
+	}
+}
+
 static int bma400_init(struct bma400_data *data)
 {
 	unsigned int val;
@@ -569,13 +873,12 @@ static int bma400_init(struct bma400_data *data)
 	ret = regmap_read(data->regmap, BMA400_CHIP_ID_REG, &val);
 	if (ret) {
 		dev_err(data->dev, "Failed to read chip id register\n");
-		goto out;
+		return ret;
 	}
 
 	if (val != BMA400_ID_REG_VAL) {
 		dev_err(data->dev, "Chip ID mismatch\n");
-		ret = -ENODEV;
-		goto out;
+		return -ENODEV;
 	}
 
 	data->regulators[BMA400_VDD_REGULATOR].supply = "vdd";
@@ -589,27 +892,31 @@ static int bma400_init(struct bma400_data *data)
 				"Failed to get regulators: %d\n",
 				ret);
 
-		goto out;
+		return ret;
 	}
 	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
 				    data->regulators);
 	if (ret) {
 		dev_err(data->dev, "Failed to enable regulators: %d\n",
 			ret);
-		goto out;
+		return ret;
 	}
 
+	ret = devm_add_action_or_reset(data->dev, bma400_regulators_disable, data);
+	if (ret)
+		return ret;
+
 	ret = bma400_get_power_mode(data);
 	if (ret) {
 		dev_err(data->dev, "Failed to get the initial power-mode\n");
-		goto err_reg_disable;
+		return ret;
 	}
 
 	if (data->power_mode != POWER_MODE_NORMAL) {
 		ret = bma400_set_power_mode(data, POWER_MODE_NORMAL);
 		if (ret) {
 			dev_err(data->dev, "Failed to wake up the device\n");
-			goto err_reg_disable;
+			return ret;
 		}
 		/*
 		 * TODO: The datasheet waits 1500us here in the example, but
@@ -618,20 +925,28 @@ static int bma400_init(struct bma400_data *data)
 		usleep_range(1500, 2000);
 	}
 
+	ret = devm_add_action_or_reset(data->dev, bma400_power_disable, data);
+	if (ret)
+		return ret;
+
 	bma400_init_tables();
 
 	ret = bma400_get_accel_output_data_rate(data);
 	if (ret)
-		goto err_reg_disable;
+		return ret;
 
 	ret = bma400_get_accel_oversampling_ratio(data);
 	if (ret)
-		goto err_reg_disable;
+		return ret;
 
 	ret = bma400_get_accel_scale(data);
 	if (ret)
-		goto err_reg_disable;
+		return ret;
 
+	/* Configure INT1 pin to open drain */
+	ret = regmap_write(data->regmap, BMA400_INT_IO_CTRL_REG, 0x06);
+	if (ret)
+		return ret;
 	/*
 	 * Once the interrupt engine is supported we might use the
 	 * data_src_reg, but for now ensure this is set to the
@@ -639,12 +954,6 @@ static int bma400_init(struct bma400_data *data)
 	 * channel.
 	 */
 	return regmap_write(data->regmap, BMA400_ACC_CONFIG2_REG, 0x00);
-
-err_reg_disable:
-	regulator_bulk_disable(ARRAY_SIZE(data->regulators),
-			       data->regulators);
-out:
-	return ret;
 }
 
 static int bma400_read_raw(struct iio_dev *indio_dev,
@@ -652,14 +961,37 @@ static int bma400_read_raw(struct iio_dev *indio_dev,
 			   int *val2, long mask)
 {
 	struct bma400_data *data = iio_priv(indio_dev);
+	unsigned int activity;
 	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_PROCESSED:
-		mutex_lock(&data->mutex);
-		ret = bma400_get_temp_reg(data, val, val2);
-		mutex_unlock(&data->mutex);
-		return ret;
+		switch (chan->type) {
+		case IIO_TEMP:
+			mutex_lock(&data->mutex);
+			ret = bma400_get_temp_reg(data, val, val2);
+			mutex_unlock(&data->mutex);
+			return ret;
+		case IIO_STEPS:
+			return bma400_get_steps_reg(data, val);
+		case IIO_ACTIVITY:
+			ret = regmap_read(data->regmap, BMA400_STEP_STAT_REG,
+					  &activity);
+			if (ret)
+				return ret;
+			/*
+			 * The device does not support confidence value levels,
+			 * so we will always have 100% for current activity and
+			 * 0% for the others.
+			 */
+			if (chan->channel2 == bma400_act_to_mod(activity))
+				*val = 100;
+			else
+				*val = 0;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
 	case IIO_CHAN_INFO_RAW:
 		mutex_lock(&data->mutex);
 		ret = bma400_get_accel_reg(data, chan, val);
@@ -700,6 +1032,9 @@ static int bma400_read_raw(struct iio_dev *indio_dev,
 
 		*val = data->oversampling_ratio;
 		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_ENABLE:
+		*val = data->steps_enabled;
+		return IIO_VAL_INT;
 	default:
 		return -EINVAL;
 	}
@@ -765,6 +1100,11 @@ static int bma400_write_raw(struct iio_dev *indio_dev,
 		ret = bma400_set_accel_oversampling_ratio(data, val);
 		mutex_unlock(&data->mutex);
 		return ret;
+	case IIO_CHAN_INFO_ENABLE:
+		mutex_lock(&data->mutex);
+		ret = bma400_enable_steps(data, val);
+		mutex_unlock(&data->mutex);
+		return ret;
 	default:
 		return -EINVAL;
 	}
@@ -781,19 +1121,610 @@ static int bma400_write_raw_get_fmt(struct iio_dev *indio_dev,
 		return IIO_VAL_INT_PLUS_MICRO;
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
 		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_ENABLE:
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bma400_read_event_config(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir)
+{
+	struct bma400_data *data = iio_priv(indio_dev);
+
+	switch (chan->type) {
+	case IIO_ACCEL:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return FIELD_GET(BMA400_INT_GEN1_MSK,
+					 data->generic_event_en);
+		case IIO_EV_DIR_FALLING:
+			return FIELD_GET(BMA400_INT_GEN2_MSK,
+					 data->generic_event_en);
+		case IIO_EV_DIR_SINGLETAP:
+			return FIELD_GET(BMA400_S_TAP_MSK,
+					 data->tap_event_en_bitmask);
+		case IIO_EV_DIR_DOUBLETAP:
+			return FIELD_GET(BMA400_D_TAP_MSK,
+					 data->tap_event_en_bitmask);
+		default:
+			return -EINVAL;
+		}
+	case IIO_STEPS:
+		return data->step_event_en;
+	case IIO_ACTIVITY:
+		return data->activity_event_en;
 	default:
 		return -EINVAL;
 	}
 }
 
+static int bma400_steps_event_enable(struct bma400_data *data, int state)
+{
+	int ret;
+
+	ret = bma400_enable_steps(data, 1);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT12_MAP_REG,
+				 BMA400_STEP_INT_MSK,
+				 FIELD_PREP(BMA400_STEP_INT_MSK,
+					    state));
+	if (ret)
+		return ret;
+	data->step_event_en = state;
+	return 0;
+}
+
+static int bma400_activity_event_en(struct bma400_data *data,
+				    enum iio_event_direction dir,
+				    int state)
+{
+	int ret, reg, msk, value;
+	int field_value = 0;
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		reg = BMA400_GEN1INT_CONFIG0;
+		msk = BMA400_INT_GEN1_MSK;
+		value = 2;
+		set_mask_bits(&field_value, BMA400_INT_GEN1_MSK,
+			      FIELD_PREP(BMA400_INT_GEN1_MSK, state));
+		break;
+	case IIO_EV_DIR_FALLING:
+		reg = BMA400_GEN2INT_CONFIG0;
+		msk = BMA400_INT_GEN2_MSK;
+		value = 0;
+		set_mask_bits(&field_value, BMA400_INT_GEN2_MSK,
+			      FIELD_PREP(BMA400_INT_GEN2_MSK, state));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* Enabling all axis for interrupt evaluation */
+	ret = regmap_write(data->regmap, reg, 0xF8);
+	if (ret)
+		return ret;
+
+	/* OR combination of all axis for interrupt evaluation */
+	ret = regmap_write(data->regmap, reg + BMA400_GEN_CONFIG1_OFF, value);
+	if (ret)
+		return ret;
+
+	/* Initial value to avoid interrupts while enabling*/
+	ret = regmap_write(data->regmap, reg + BMA400_GEN_CONFIG2_OFF, 0x0A);
+	if (ret)
+		return ret;
+
+	/* Initial duration value to avoid interrupts while enabling*/
+	ret = regmap_write(data->regmap, reg + BMA400_GEN_CONFIG31_OFF, 0x0F);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT1_MAP_REG, msk,
+				 field_value);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT_CONFIG0_REG, msk,
+				 field_value);
+	if (ret)
+		return ret;
+
+	set_mask_bits(&data->generic_event_en, msk, field_value);
+	return 0;
+}
+
+static int bma400_tap_event_en(struct bma400_data *data,
+			       enum iio_event_direction dir, int state)
+{
+	unsigned int mask, field_value;
+	int ret;
+
+	/*
+	 * Tap interrupts can be configured only in normal mode.
+	 * See table in section 4.3 "Power modes - performance modes" of
+	 * datasheet v1.2.
+	 */
+	if (data->power_mode != POWER_MODE_NORMAL)
+		return -EINVAL;
+
+	/*
+	 * Tap interrupts are operating with a data rate of 200Hz.
+	 * See section 4.7 "Tap sensing interrupt" in datasheet v1.2.
+	 */
+	if (data->sample_freq.hz != 200 && state) {
+		dev_err(data->dev, "Invalid data rate for tap interrupts.\n");
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT12_MAP_REG,
+				 BMA400_S_TAP_MSK,
+				 FIELD_PREP(BMA400_S_TAP_MSK, state));
+	if (ret)
+		return ret;
+
+	switch (dir) {
+	case IIO_EV_DIR_SINGLETAP:
+		mask = BMA400_S_TAP_MSK;
+		set_mask_bits(&field_value, BMA400_S_TAP_MSK,
+			      FIELD_PREP(BMA400_S_TAP_MSK, state));
+		break;
+	case IIO_EV_DIR_DOUBLETAP:
+		mask = BMA400_D_TAP_MSK;
+		set_mask_bits(&field_value, BMA400_D_TAP_MSK,
+			      FIELD_PREP(BMA400_D_TAP_MSK, state));
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT_CONFIG1_REG, mask,
+				 field_value);
+	if (ret)
+		return ret;
+
+	set_mask_bits(&data->tap_event_en_bitmask, mask, field_value);
+
+	return 0;
+}
+
+static int bma400_disable_adv_interrupt(struct bma400_data *data)
+{
+	int ret;
+
+	ret = regmap_write(data->regmap, BMA400_INT_CONFIG0_REG, 0);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(data->regmap, BMA400_INT_CONFIG1_REG, 0);
+	if (ret)
+		return ret;
+
+	data->tap_event_en_bitmask = 0;
+	data->generic_event_en = 0;
+	data->step_event_en = false;
+	data->activity_event_en = false;
+
+	return 0;
+}
+
+static int bma400_write_event_config(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir, int state)
+{
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (chan->type) {
+	case IIO_ACCEL:
+		switch (type) {
+		case IIO_EV_TYPE_MAG:
+			mutex_lock(&data->mutex);
+			ret = bma400_activity_event_en(data, dir, state);
+			mutex_unlock(&data->mutex);
+			return ret;
+		case IIO_EV_TYPE_GESTURE:
+			mutex_lock(&data->mutex);
+			ret = bma400_tap_event_en(data, dir, state);
+			mutex_unlock(&data->mutex);
+			return ret;
+		default:
+			return -EINVAL;
+		}
+	case IIO_STEPS:
+		mutex_lock(&data->mutex);
+		ret = bma400_steps_event_enable(data, state);
+		mutex_unlock(&data->mutex);
+		return ret;
+	case IIO_ACTIVITY:
+		mutex_lock(&data->mutex);
+		if (!data->step_event_en) {
+			ret = bma400_steps_event_enable(data, true);
+			if (ret) {
+				mutex_unlock(&data->mutex);
+				return ret;
+			}
+		}
+		data->activity_event_en = state;
+		mutex_unlock(&data->mutex);
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int get_gen_config_reg(enum iio_event_direction dir)
+{
+	switch (dir) {
+	case IIO_EV_DIR_FALLING:
+		return BMA400_GEN2INT_CONFIG0;
+	case IIO_EV_DIR_RISING:
+		return BMA400_GEN1INT_CONFIG0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bma400_read_event_value(struct iio_dev *indio_dev,
+				   const struct iio_chan_spec *chan,
+				   enum iio_event_type type,
+				   enum iio_event_direction dir,
+				   enum iio_event_info info,
+				   int *val, int *val2)
+{
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret, reg, reg_val, raw;
+
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (type) {
+	case IIO_EV_TYPE_MAG:
+		reg = get_gen_config_reg(dir);
+		if (reg < 0)
+			return -EINVAL;
+
+		*val2 = 0;
+		switch (info) {
+		case IIO_EV_INFO_VALUE:
+			ret = regmap_read(data->regmap,
+					  reg + BMA400_GEN_CONFIG2_OFF,
+					  val);
+			if (ret)
+				return ret;
+			return IIO_VAL_INT;
+		case IIO_EV_INFO_PERIOD:
+			mutex_lock(&data->mutex);
+			ret = regmap_bulk_read(data->regmap,
+					       reg + BMA400_GEN_CONFIG3_OFF,
+					       &data->duration,
+					       sizeof(data->duration));
+			if (ret) {
+				mutex_unlock(&data->mutex);
+				return ret;
+			}
+			*val = be16_to_cpu(data->duration);
+			mutex_unlock(&data->mutex);
+			return IIO_VAL_INT;
+		case IIO_EV_INFO_HYSTERESIS:
+			ret = regmap_read(data->regmap, reg, val);
+			if (ret)
+				return ret;
+			*val = FIELD_GET(BMA400_GEN_HYST_MSK, *val);
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_TYPE_GESTURE:
+		switch (info) {
+		case IIO_EV_INFO_VALUE:
+			ret = regmap_read(data->regmap, BMA400_TAP_CONFIG,
+					  &reg_val);
+			if (ret)
+				return ret;
+
+			*val = FIELD_GET(BMA400_TAP_SEN_MSK, reg_val);
+			return IIO_VAL_INT;
+		case IIO_EV_INFO_RESET_TIMEOUT:
+			ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1,
+					  &reg_val);
+			if (ret)
+				return ret;
+
+			raw = FIELD_GET(BMA400_TAP_QUIET_MSK, reg_val);
+			*val = 0;
+			*val2 = tap_reset_timeout[raw];
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_EV_INFO_TAP2_MIN_DELAY:
+			ret = regmap_read(data->regmap, BMA400_TAP_CONFIG1,
+					  &reg_val);
+			if (ret)
+				return ret;
+
+			raw = FIELD_GET(BMA400_TAP_QUIETDT_MSK, reg_val);
+			*val = 0;
+			*val2 = double_tap2_min_delay[raw];
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bma400_write_event_value(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir,
+				    enum iio_event_info info,
+				    int val, int val2)
+{
+	struct bma400_data *data = iio_priv(indio_dev);
+	int reg, ret, raw;
+
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (type) {
+	case IIO_EV_TYPE_MAG:
+		reg = get_gen_config_reg(dir);
+		if (reg < 0)
+			return -EINVAL;
+
+		switch (info) {
+		case IIO_EV_INFO_VALUE:
+			if (val < 1 || val > 255)
+				return -EINVAL;
+
+			return regmap_write(data->regmap,
+					    reg + BMA400_GEN_CONFIG2_OFF,
+					    val);
+		case IIO_EV_INFO_PERIOD:
+			if (val < 1 || val > 65535)
+				return -EINVAL;
+
+			mutex_lock(&data->mutex);
+			put_unaligned_be16(val, &data->duration);
+			ret = regmap_bulk_write(data->regmap,
+						reg + BMA400_GEN_CONFIG3_OFF,
+						&data->duration,
+						sizeof(data->duration));
+			mutex_unlock(&data->mutex);
+			return ret;
+		case IIO_EV_INFO_HYSTERESIS:
+			if (val < 0 || val > 3)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap, reg,
+						  BMA400_GEN_HYST_MSK,
+						  FIELD_PREP(BMA400_GEN_HYST_MSK,
+							     val));
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_TYPE_GESTURE:
+		switch (info) {
+		case IIO_EV_INFO_VALUE:
+			if (val < 0 || val > 7)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap,
+						  BMA400_TAP_CONFIG,
+						  BMA400_TAP_SEN_MSK,
+						  FIELD_PREP(BMA400_TAP_SEN_MSK,
+							     val));
+		case IIO_EV_INFO_RESET_TIMEOUT:
+			raw = usec_to_tapreg_raw(val2, tap_reset_timeout);
+			if (raw < 0)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap,
+						  BMA400_TAP_CONFIG1,
+						  BMA400_TAP_QUIET_MSK,
+						  FIELD_PREP(BMA400_TAP_QUIET_MSK,
+							     raw));
+		case IIO_EV_INFO_TAP2_MIN_DELAY:
+			raw = usec_to_tapreg_raw(val2, double_tap2_min_delay);
+			if (raw < 0)
+				return -EINVAL;
+
+			return regmap_update_bits(data->regmap,
+						  BMA400_TAP_CONFIG1,
+						  BMA400_TAP_QUIETDT_MSK,
+						  FIELD_PREP(BMA400_TAP_QUIETDT_MSK,
+							     raw));
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bma400_data_rdy_trigger_set_state(struct iio_trigger *trig,
+					     bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = regmap_update_bits(data->regmap, BMA400_INT_CONFIG0_REG,
+				 BMA400_INT_DRDY_MSK,
+				 FIELD_PREP(BMA400_INT_DRDY_MSK, state));
+	if (ret)
+		return ret;
+
+	return regmap_update_bits(data->regmap, BMA400_INT1_MAP_REG,
+				  BMA400_INT_DRDY_MSK,
+				  FIELD_PREP(BMA400_INT_DRDY_MSK, state));
+}
+
+static const unsigned long bma400_avail_scan_masks[] = {
+	BIT(BMA400_ACCL_X) | BIT(BMA400_ACCL_Y) | BIT(BMA400_ACCL_Z),
+	BIT(BMA400_ACCL_X) | BIT(BMA400_ACCL_Y) | BIT(BMA400_ACCL_Z)
+	| BIT(BMA400_TEMP),
+	0
+};
+
 static const struct iio_info bma400_info = {
 	.read_raw          = bma400_read_raw,
 	.read_avail        = bma400_read_avail,
 	.write_raw         = bma400_write_raw,
 	.write_raw_get_fmt = bma400_write_raw_get_fmt,
+	.read_event_config = bma400_read_event_config,
+	.write_event_config = bma400_write_event_config,
+	.write_event_value = bma400_write_event_value,
+	.read_event_value = bma400_read_event_value,
+	.event_attrs = &bma400_event_attribute_group,
+};
+
+static const struct iio_trigger_ops bma400_trigger_ops = {
+	.set_trigger_state = &bma400_data_rdy_trigger_set_state,
+	.validate_device = &iio_trigger_validate_own_device,
 };
 
-int bma400_probe(struct device *dev, struct regmap *regmap, const char *name)
+static irqreturn_t bma400_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct bma400_data *data = iio_priv(indio_dev);
+	int ret, temp;
+
+	/* Lock to protect the data->buffer */
+	mutex_lock(&data->mutex);
+
+	/* bulk read six registers, with the base being the LSB register */
+	ret = regmap_bulk_read(data->regmap, BMA400_X_AXIS_LSB_REG,
+			       &data->buffer.buff, sizeof(data->buffer.buff));
+	if (ret)
+		goto unlock_err;
+
+	if (test_bit(BMA400_TEMP, indio_dev->active_scan_mask)) {
+		ret = regmap_read(data->regmap, BMA400_TEMP_DATA_REG, &temp);
+		if (ret)
+			goto unlock_err;
+
+		data->buffer.temperature = temp;
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,
+					   iio_get_time_ns(indio_dev));
+
+	mutex_unlock(&data->mutex);
+	iio_trigger_notify_done(indio_dev->trig);
+	return IRQ_HANDLED;
+
+unlock_err:
+	mutex_unlock(&data->mutex);
+	return IRQ_NONE;
+}
+
+static irqreturn_t bma400_interrupt(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct bma400_data *data = iio_priv(indio_dev);
+	s64 timestamp = iio_get_time_ns(indio_dev);
+	unsigned int act, ev_dir = IIO_EV_DIR_NONE;
+	int ret;
+
+	/* Lock to protect the data->status */
+	mutex_lock(&data->mutex);
+	ret = regmap_bulk_read(data->regmap, BMA400_INT_STAT0_REG,
+			       &data->status,
+			       sizeof(data->status));
+	/*
+	 * if none of the bit is set in the status register then it is
+	 * spurious interrupt.
+	 */
+	if (ret || !data->status)
+		goto unlock_err;
+
+	/*
+	 * Disable all advance interrupts if interrupt engine overrun occurs.
+	 * See section 4.7 "Interrupt engine overrun" in datasheet v1.2.
+	 */
+	if (FIELD_GET(BMA400_INT_ENG_OVRUN_MSK, le16_to_cpu(data->status))) {
+		bma400_disable_adv_interrupt(data);
+		dev_err(data->dev, "Interrupt engine overrun\n");
+		goto unlock_err;
+	}
+
+	if (FIELD_GET(BMA400_INT_S_TAP_MSK, le16_to_cpu(data->status)))
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0,
+						  IIO_MOD_X_OR_Y_OR_Z,
+						  IIO_EV_TYPE_GESTURE,
+						  IIO_EV_DIR_SINGLETAP),
+			       timestamp);
+
+	if (FIELD_GET(BMA400_INT_D_TAP_MSK, le16_to_cpu(data->status)))
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0,
+						  IIO_MOD_X_OR_Y_OR_Z,
+						  IIO_EV_TYPE_GESTURE,
+						  IIO_EV_DIR_DOUBLETAP),
+			       timestamp);
+
+	if (FIELD_GET(BMA400_INT_GEN1_MSK, le16_to_cpu(data->status)))
+		ev_dir = IIO_EV_DIR_RISING;
+
+	if (FIELD_GET(BMA400_INT_GEN2_MSK, le16_to_cpu(data->status)))
+		ev_dir = IIO_EV_DIR_FALLING;
+
+	if (ev_dir != IIO_EV_DIR_NONE) {
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL, 0,
+						  IIO_MOD_X_OR_Y_OR_Z,
+						  IIO_EV_TYPE_MAG, ev_dir),
+			       timestamp);
+	}
+
+	if (FIELD_GET(BMA400_STEP_STAT_MASK, le16_to_cpu(data->status))) {
+		iio_push_event(indio_dev,
+			       IIO_MOD_EVENT_CODE(IIO_STEPS, 0, IIO_NO_MOD,
+						  IIO_EV_TYPE_CHANGE,
+						  IIO_EV_DIR_NONE),
+			       timestamp);
+
+		if (data->activity_event_en) {
+			ret = regmap_read(data->regmap, BMA400_STEP_STAT_REG,
+					  &act);
+			if (ret)
+				goto unlock_err;
+
+			iio_push_event(indio_dev,
+				       IIO_MOD_EVENT_CODE(IIO_ACTIVITY, 0,
+							  bma400_act_to_mod(act),
+							  IIO_EV_TYPE_CHANGE,
+							  IIO_EV_DIR_NONE),
+				       timestamp);
+		}
+	}
+
+	if (FIELD_GET(BMA400_INT_DRDY_MSK, le16_to_cpu(data->status))) {
+		mutex_unlock(&data->mutex);
+		iio_trigger_poll_chained(data->trig);
+		return IRQ_HANDLED;
+	}
+
+	mutex_unlock(&data->mutex);
+	return IRQ_HANDLED;
+
+unlock_err:
+	mutex_unlock(&data->mutex);
+	return IRQ_NONE;
+}
+
+int bma400_probe(struct device *dev, struct regmap *regmap, int irq,
+		 const char *name)
 {
 	struct iio_dev *indio_dev;
 	struct bma400_data *data;
@@ -811,43 +1742,54 @@ int bma400_probe(struct device *dev, struct regmap *regmap, const char *name)
 	if (ret)
 		return ret;
 
-	ret = iio_read_mount_matrix(dev, "mount-matrix", &data->orientation);
+	ret = iio_read_mount_matrix(dev, &data->orientation);
 	if (ret)
 		return ret;
 
 	mutex_init(&data->mutex);
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &bma400_info;
 	indio_dev->channels = bma400_channels;
 	indio_dev->num_channels = ARRAY_SIZE(bma400_channels);
+	indio_dev->available_scan_masks = bma400_avail_scan_masks;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	dev_set_drvdata(dev, indio_dev);
-
-	return iio_device_register(indio_dev);
-}
-EXPORT_SYMBOL(bma400_probe);
-
-int bma400_remove(struct device *dev)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct bma400_data *data = iio_priv(indio_dev);
-	int ret;
+	if (irq > 0) {
+		data->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
+						    indio_dev->name,
+						    iio_device_id(indio_dev));
+		if (!data->trig)
+			return -ENOMEM;
 
-	mutex_lock(&data->mutex);
-	ret = bma400_set_power_mode(data, POWER_MODE_SLEEP);
-	mutex_unlock(&data->mutex);
+		data->trig->ops = &bma400_trigger_ops;
+		iio_trigger_set_drvdata(data->trig, indio_dev);
 
-	regulator_bulk_disable(ARRAY_SIZE(data->regulators),
-			       data->regulators);
+		ret = devm_iio_trigger_register(data->dev, data->trig);
+		if (ret)
+			return dev_err_probe(data->dev, ret,
+					     "iio trigger register fail\n");
+
+		indio_dev->trig = iio_trigger_get(data->trig);
+		ret = devm_request_threaded_irq(dev, irq, NULL,
+						&bma400_interrupt,
+						IRQF_TRIGGER_RISING | IRQF_ONESHOT,
+						indio_dev->name, indio_dev);
+		if (ret)
+			return dev_err_probe(data->dev, ret,
+					     "request irq %d failed\n", irq);
+	}
 
-	iio_device_unregister(indio_dev);
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+					      &bma400_trigger_handler, NULL);
+	if (ret)
+		return dev_err_probe(data->dev, ret,
+				     "iio triggered buffer setup failed\n");
 
-	return ret;
+	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL(bma400_remove);
+EXPORT_SYMBOL_NS(bma400_probe, IIO_BMA400);
 
 MODULE_AUTHOR("Dan Robertson <dan@dlrobertson.com>");
+MODULE_AUTHOR("Jagath Jog J <jagathjog1996@gmail.com>");
 MODULE_DESCRIPTION("Bosch BMA400 triaxial acceleration sensor core");
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/accel/bma400_i2c.c b/drivers/iio/accel/bma400_i2c.c
index 9dcb7cc9996e..1ba2a982ea73 100644
--- a/drivers/iio/accel/bma400_i2c.c
+++ b/drivers/iio/accel/bma400_i2c.c
@@ -24,12 +24,7 @@ static int bma400_i2c_probe(struct i2c_client *client,
 		return PTR_ERR(regmap);
 	}
 
-	return bma400_probe(&client->dev, regmap, id->name);
-}
-
-static int bma400_i2c_remove(struct i2c_client *client)
-{
-	return bma400_remove(&client->dev);
+	return bma400_probe(&client->dev, regmap, client->irq, id->name);
 }
 
 static const struct i2c_device_id bma400_i2c_ids[] = {
@@ -50,7 +45,6 @@ static struct i2c_driver bma400_i2c_driver = {
 		.of_match_table = bma400_of_i2c_match,
 	},
 	.probe    = bma400_i2c_probe,
-	.remove   = bma400_i2c_remove,
 	.id_table = bma400_i2c_ids,
 };
 
@@ -59,3 +53,4 @@ module_i2c_driver(bma400_i2c_driver);
 MODULE_AUTHOR("Dan Robertson <dan@dlrobertson.com>");
 MODULE_DESCRIPTION("Bosch BMA400 triaxial acceleration sensor (I2C)");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_BMA400);
diff --git a/drivers/iio/accel/bma400_spi.c b/drivers/iio/accel/bma400_spi.c
new file mode 100644
index 000000000000..ec13c044b304
--- /dev/null
+++ b/drivers/iio/accel/bma400_spi.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * SPI IIO driver for Bosch BMA400 triaxial acceleration sensor.
+ *
+ * Copyright 2020 Dan Robertson <dan@dlrobertson.com>
+ *
+ */
+#include <linux/bits.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include "bma400.h"
+
+#define BMA400_MAX_SPI_READ 2
+#define BMA400_SPI_READ_BUFFER_SIZE (BMA400_MAX_SPI_READ + 1)
+
+static int bma400_regmap_spi_read(void *context,
+				  const void *reg, size_t reg_size,
+				  void *val, size_t val_size)
+{
+	struct device *dev = context;
+	struct spi_device *spi = to_spi_device(dev);
+	u8 result[BMA400_SPI_READ_BUFFER_SIZE];
+	ssize_t status;
+
+	if (val_size > BMA400_MAX_SPI_READ)
+		return -EINVAL;
+
+	status = spi_write_then_read(spi, reg, 1, result, val_size + 1);
+	if (status)
+		return status;
+
+	/*
+	 * From the BMA400 datasheet:
+	 *
+	 * > For a basic read operation two bytes have to be read and the first
+	 * > has to be dropped and the second byte must be interpreted.
+	 */
+	memcpy(val, result + 1, val_size);
+
+	return 0;
+}
+
+static int bma400_regmap_spi_write(void *context, const void *data,
+				   size_t count)
+{
+	struct device *dev = context;
+	struct spi_device *spi = to_spi_device(dev);
+
+	return spi_write(spi, data, count);
+}
+
+static struct regmap_bus bma400_regmap_bus = {
+	.read = bma400_regmap_spi_read,
+	.write = bma400_regmap_spi_write,
+	.read_flag_mask = BIT(7),
+	.max_raw_read = BMA400_MAX_SPI_READ,
+};
+
+static int bma400_spi_probe(struct spi_device *spi)
+{
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct regmap *regmap;
+	unsigned int val;
+	int ret;
+
+	regmap = devm_regmap_init(&spi->dev, &bma400_regmap_bus,
+				  &spi->dev, &bma400_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "failed to create regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	/*
+	 * Per the bma400 datasheet, the first SPI read may
+	 * return garbage. As the datasheet recommends, the
+	 * chip ID register will be read here and checked
+	 * again in the following probe.
+	 */
+	ret = regmap_read(regmap, BMA400_CHIP_ID_REG, &val);
+	if (ret)
+		dev_err(&spi->dev, "Failed to read chip id register\n");
+
+	return bma400_probe(&spi->dev, regmap, spi->irq, id->name);
+}
+
+static const struct spi_device_id bma400_spi_ids[] = {
+	{ "bma400", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, bma400_spi_ids);
+
+static const struct of_device_id bma400_of_spi_match[] = {
+	{ .compatible = "bosch,bma400" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, bma400_of_spi_match);
+
+static struct spi_driver bma400_spi_driver = {
+	.driver = {
+		.name = "bma400",
+		.of_match_table = bma400_of_spi_match,
+	},
+	.probe    = bma400_spi_probe,
+	.id_table = bma400_spi_ids,
+};
+
+module_spi_driver(bma400_spi_driver);
+MODULE_AUTHOR("Dan Robertson <dan@dlrobertson.com>");
+MODULE_DESCRIPTION("Bosch BMA400 triaxial acceleration sensor (SPI)");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_BMA400);
diff --git a/drivers/iio/accel/bmc150-accel-core.c b/drivers/iio/accel/bmc150-accel-core.c
index 121b4e89f038..92f8b139acce 100644
--- a/drivers/iio/accel/bmc150-accel-core.c
+++ b/drivers/iio/accel/bmc150-accel-core.c
@@ -1,13 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * 3-axis accelerometer driver supporting following Bosch-Sensortec chips:
- *  - BMC150
- *  - BMI055
- *  - BMA255
- *  - BMA250E
- *  - BMA222E
- *  - BMA280
- *
+ * 3-axis accelerometer driver supporting many Bosch-Sensortec chips
  * Copyright (c) 2014, Intel Corporation.
  */
 
@@ -17,6 +10,7 @@
 #include <linux/delay.h>
 #include <linux/slab.h>
 #include <linux/acpi.h>
+#include <linux/of_irq.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 #include <linux/iio/iio.h>
@@ -27,6 +21,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 #include "bmc150-accel.h"
 
@@ -63,12 +58,18 @@
 #define BMC150_ACCEL_RESET_VAL			0xB6
 
 #define BMC150_ACCEL_REG_INT_MAP_0		0x19
-#define BMC150_ACCEL_INT_MAP_0_BIT_SLOPE	BIT(2)
+#define BMC150_ACCEL_INT_MAP_0_BIT_INT1_SLOPE	BIT(2)
 
 #define BMC150_ACCEL_REG_INT_MAP_1		0x1A
-#define BMC150_ACCEL_INT_MAP_1_BIT_DATA		BIT(0)
-#define BMC150_ACCEL_INT_MAP_1_BIT_FWM		BIT(1)
-#define BMC150_ACCEL_INT_MAP_1_BIT_FFULL	BIT(2)
+#define BMC150_ACCEL_INT_MAP_1_BIT_INT1_DATA	BIT(0)
+#define BMC150_ACCEL_INT_MAP_1_BIT_INT1_FWM	BIT(1)
+#define BMC150_ACCEL_INT_MAP_1_BIT_INT1_FFULL	BIT(2)
+#define BMC150_ACCEL_INT_MAP_1_BIT_INT2_FFULL	BIT(5)
+#define BMC150_ACCEL_INT_MAP_1_BIT_INT2_FWM	BIT(6)
+#define BMC150_ACCEL_INT_MAP_1_BIT_INT2_DATA	BIT(7)
+
+#define BMC150_ACCEL_REG_INT_MAP_2		0x1B
+#define BMC150_ACCEL_INT_MAP_2_BIT_INT2_SLOPE	BIT(2)
 
 #define BMC150_ACCEL_REG_INT_RST_LATCH		0x21
 #define BMC150_ACCEL_INT_MODE_LATCH_RESET	0x80
@@ -87,6 +88,7 @@
 
 #define BMC150_ACCEL_REG_INT_OUT_CTRL		0x20
 #define BMC150_ACCEL_INT_OUT_CTRL_INT1_LVL	BIT(0)
+#define BMC150_ACCEL_INT_OUT_CTRL_INT2_LVL	BIT(2)
 
 #define BMC150_ACCEL_REG_INT_5			0x27
 #define BMC150_ACCEL_SLOPE_DUR_MASK		0x03
@@ -155,50 +157,6 @@ struct bmc150_accel_chip_info {
 	const struct bmc150_scale_info scale_table[4];
 };
 
-struct bmc150_accel_interrupt {
-	const struct bmc150_accel_interrupt_info *info;
-	atomic_t users;
-};
-
-struct bmc150_accel_trigger {
-	struct bmc150_accel_data *data;
-	struct iio_trigger *indio_trig;
-	int (*setup)(struct bmc150_accel_trigger *t, bool state);
-	int intr;
-	bool enabled;
-};
-
-enum bmc150_accel_interrupt_id {
-	BMC150_ACCEL_INT_DATA_READY,
-	BMC150_ACCEL_INT_ANY_MOTION,
-	BMC150_ACCEL_INT_WATERMARK,
-	BMC150_ACCEL_INTERRUPTS,
-};
-
-enum bmc150_accel_trigger_id {
-	BMC150_ACCEL_TRIGGER_DATA_READY,
-	BMC150_ACCEL_TRIGGER_ANY_MOTION,
-	BMC150_ACCEL_TRIGGERS,
-};
-
-struct bmc150_accel_data {
-	struct regmap *regmap;
-	int irq;
-	struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
-	struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
-	struct mutex mutex;
-	u8 fifo_mode, watermark;
-	s16 buffer[8];
-	u8 bw_bits;
-	u32 slope_dur;
-	u32 slope_thres;
-	u32 range;
-	int ev_enable_state;
-	int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */
-	const struct bmc150_accel_chip_info *chip_info;
-	struct iio_mount_matrix orientation;
-};
-
 static const struct {
 	int val;
 	int val2;
@@ -212,7 +170,7 @@ static const struct {
 				     {1000, 0, 0x0E},
 				     {2000, 0, 0x0F} };
 
-static const struct {
+static __maybe_unused const struct {
 	int bw_bits;
 	int msec;
 } bmc150_accel_sample_upd_time[] = { {0x08, 64},
@@ -245,7 +203,7 @@ const struct regmap_config bmc150_regmap_conf = {
 	.val_bits = 8,
 	.max_register = 0x3f,
 };
-EXPORT_SYMBOL_GPL(bmc150_regmap_conf);
+EXPORT_SYMBOL_NS_GPL(bmc150_regmap_conf, IIO_BMC150);
 
 static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
 				 enum bmc150_power_modes mode,
@@ -378,7 +336,7 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
 	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
 	} else {
 		pm_runtime_mark_last_busy(dev);
 		ret = pm_runtime_put_autosuspend(dev);
@@ -387,9 +345,6 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
 	if (ret < 0) {
 		dev_err(dev,
 			"Failed: %s for %d\n", __func__, on);
-		if (on)
-			pm_runtime_put_noidle(dev);
-
 		return ret;
 	}
 
@@ -402,21 +357,175 @@ static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
 }
 #endif
 
-static const struct bmc150_accel_interrupt_info {
+#ifdef CONFIG_ACPI
+/*
+ * Support for getting accelerometer information from BOSC0200 ACPI nodes.
+ *
+ * There are 2 variants of the BOSC0200 ACPI node. Some 2-in-1s with 360 degree
+ * hinges declare 2 I2C ACPI-resources for 2 accelerometers, 1 in the display
+ * and 1 in the base of the 2-in-1. On these 2-in-1s the ROMS ACPI object
+ * contains the mount-matrix for the sensor in the display and ROMK contains
+ * the mount-matrix for the sensor in the base. On devices using a single
+ * sensor there is a ROTM ACPI object which contains the mount-matrix.
+ *
+ * Here is an incomplete list of devices known to use 1 of these setups:
+ *
+ * Yoga devices with 2 accelerometers using ROMS + ROMK for the mount-matrices:
+ * Lenovo Thinkpad Yoga 11e 3th gen
+ * Lenovo Thinkpad Yoga 11e 4th gen
+ *
+ * Tablets using a single accelerometer using ROTM for the mount-matrix:
+ * Chuwi Hi8 Pro (CWI513)
+ * Chuwi Vi8 Plus (CWI519)
+ * Chuwi Hi13
+ * Irbis TW90
+ * Jumper EZpad mini 3
+ * Onda V80 plus
+ * Predia Basic Tablet
+ */
+static bool bmc150_apply_bosc0200_acpi_orientation(struct device *dev,
+						   struct iio_mount_matrix *orientation)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct acpi_device *adev = ACPI_COMPANION(dev);
+	char *name, *alt_name, *label, *str;
+	union acpi_object *obj, *elements;
+	acpi_status status;
+	int i, j, val[3];
+
+	if (strcmp(dev_name(dev), "i2c-BOSC0200:base") == 0) {
+		alt_name = "ROMK";
+		label = "accel-base";
+	} else {
+		alt_name = "ROMS";
+		label = "accel-display";
+	}
+
+	if (acpi_has_method(adev->handle, "ROTM")) {
+		name = "ROTM";
+	} else if (acpi_has_method(adev->handle, alt_name)) {
+		name = alt_name;
+		indio_dev->label = label;
+	} else {
+		return false;
+	}
+
+	status = acpi_evaluate_object(adev->handle, name, NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		dev_warn(dev, "Failed to get ACPI mount matrix: %d\n", status);
+		return false;
+	}
+
+	obj = buffer.pointer;
+	if (obj->type != ACPI_TYPE_PACKAGE || obj->package.count != 3)
+		goto unknown_format;
+
+	elements = obj->package.elements;
+	for (i = 0; i < 3; i++) {
+		if (elements[i].type != ACPI_TYPE_STRING)
+			goto unknown_format;
+
+		str = elements[i].string.pointer;
+		if (sscanf(str, "%d %d %d", &val[0], &val[1], &val[2]) != 3)
+			goto unknown_format;
+
+		for (j = 0; j < 3; j++) {
+			switch (val[j]) {
+			case -1: str = "-1"; break;
+			case 0:  str = "0";  break;
+			case 1:  str = "1";  break;
+			default: goto unknown_format;
+			}
+			orientation->rotation[i * 3 + j] = str;
+		}
+	}
+
+	kfree(buffer.pointer);
+	return true;
+
+unknown_format:
+	dev_warn(dev, "Unknown ACPI mount matrix format, ignoring\n");
+	kfree(buffer.pointer);
+	return false;
+}
+
+static bool bmc150_apply_dual250e_acpi_orientation(struct device *dev,
+						   struct iio_mount_matrix *orientation)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+	if (strcmp(dev_name(dev), "i2c-DUAL250E:base") == 0)
+		indio_dev->label = "accel-base";
+	else
+		indio_dev->label = "accel-display";
+
+	return false; /* DUAL250E fwnodes have no mount matrix info */
+}
+
+static bool bmc150_apply_acpi_orientation(struct device *dev,
+					  struct iio_mount_matrix *orientation)
+{
+	struct acpi_device *adev = ACPI_COMPANION(dev);
+
+	if (adev && acpi_dev_hid_uid_match(adev, "BOSC0200", NULL))
+		return bmc150_apply_bosc0200_acpi_orientation(dev, orientation);
+
+	if (adev && acpi_dev_hid_uid_match(adev, "DUAL250E", NULL))
+		return bmc150_apply_dual250e_acpi_orientation(dev, orientation);
+
+	return false;
+}
+#else
+static bool bmc150_apply_acpi_orientation(struct device *dev,
+					  struct iio_mount_matrix *orientation)
+{
+	return false;
+}
+#endif
+
+struct bmc150_accel_interrupt_info {
 	u8 map_reg;
 	u8 map_bitmask;
 	u8 en_reg;
 	u8 en_bitmask;
-} bmc150_accel_interrupts[BMC150_ACCEL_INTERRUPTS] = {
+};
+
+static const struct bmc150_accel_interrupt_info
+bmc150_accel_interrupts_int1[BMC150_ACCEL_INTERRUPTS] = {
 	{ /* data ready interrupt */
 		.map_reg = BMC150_ACCEL_REG_INT_MAP_1,
-		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_DATA,
+		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT1_DATA,
 		.en_reg = BMC150_ACCEL_REG_INT_EN_1,
 		.en_bitmask = BMC150_ACCEL_INT_EN_BIT_DATA_EN,
 	},
 	{  /* motion interrupt */
 		.map_reg = BMC150_ACCEL_REG_INT_MAP_0,
-		.map_bitmask = BMC150_ACCEL_INT_MAP_0_BIT_SLOPE,
+		.map_bitmask = BMC150_ACCEL_INT_MAP_0_BIT_INT1_SLOPE,
+		.en_reg = BMC150_ACCEL_REG_INT_EN_0,
+		.en_bitmask =  BMC150_ACCEL_INT_EN_BIT_SLP_X |
+			BMC150_ACCEL_INT_EN_BIT_SLP_Y |
+			BMC150_ACCEL_INT_EN_BIT_SLP_Z
+	},
+	{ /* fifo watermark interrupt */
+		.map_reg = BMC150_ACCEL_REG_INT_MAP_1,
+		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT1_FWM,
+		.en_reg = BMC150_ACCEL_REG_INT_EN_1,
+		.en_bitmask = BMC150_ACCEL_INT_EN_BIT_FWM_EN,
+	},
+};
+
+static const struct bmc150_accel_interrupt_info
+bmc150_accel_interrupts_int2[BMC150_ACCEL_INTERRUPTS] = {
+	{ /* data ready interrupt */
+		.map_reg = BMC150_ACCEL_REG_INT_MAP_1,
+		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT2_DATA,
+		.en_reg = BMC150_ACCEL_REG_INT_EN_1,
+		.en_bitmask = BMC150_ACCEL_INT_EN_BIT_DATA_EN,
+	},
+	{  /* motion interrupt */
+		.map_reg = BMC150_ACCEL_REG_INT_MAP_2,
+		.map_bitmask = BMC150_ACCEL_INT_MAP_2_BIT_INT2_SLOPE,
 		.en_reg = BMC150_ACCEL_REG_INT_EN_0,
 		.en_bitmask =  BMC150_ACCEL_INT_EN_BIT_SLP_X |
 			BMC150_ACCEL_INT_EN_BIT_SLP_Y |
@@ -424,19 +533,32 @@ static const struct bmc150_accel_interrupt_info {
 	},
 	{ /* fifo watermark interrupt */
 		.map_reg = BMC150_ACCEL_REG_INT_MAP_1,
-		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_FWM,
+		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_INT2_FWM,
 		.en_reg = BMC150_ACCEL_REG_INT_EN_1,
 		.en_bitmask = BMC150_ACCEL_INT_EN_BIT_FWM_EN,
 	},
 };
 
 static void bmc150_accel_interrupts_setup(struct iio_dev *indio_dev,
-					  struct bmc150_accel_data *data)
+					  struct bmc150_accel_data *data, int irq)
 {
+	const struct bmc150_accel_interrupt_info *irq_info = NULL;
+	struct device *dev = regmap_get_device(data->regmap);
 	int i;
 
+	/*
+	 * For now we map all interrupts to the same output pin.
+	 * However, some boards may have just INT2 (and not INT1) connected,
+	 * so we try to detect which IRQ it is based on the interrupt-names.
+	 * Without interrupt-names, we assume the irq belongs to INT1.
+	 */
+	irq_info = bmc150_accel_interrupts_int1;
+	if (data->type == BOSCH_BMC156 ||
+	    irq == of_irq_get_byname(dev->of_node, "INT2"))
+		irq_info = bmc150_accel_interrupts_int2;
+
 	for (i = 0; i < BMC150_ACCEL_INTERRUPTS; i++)
-		data->interrupts[i].info = &bmc150_accel_interrupts[i];
+		data->interrupts[i].info = &irq_info[i];
 }
 
 static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i,
@@ -803,17 +925,30 @@ static const struct iio_chan_spec_ext_info bmc150_accel_ext_info[] = {
 	{ }
 };
 
-static IIO_CONST_ATTR(hwfifo_watermark_min, "1");
-static IIO_CONST_ATTR(hwfifo_watermark_max,
-		      __stringify(BMC150_ACCEL_FIFO_LENGTH));
+static ssize_t hwfifo_watermark_min_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", "1");
+}
+
+static ssize_t hwfifo_watermark_max_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", __stringify(BMC150_ACCEL_FIFO_LENGTH));
+}
+
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_min, 0);
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_max, 0);
 static IIO_DEVICE_ATTR(hwfifo_enabled, S_IRUGO,
 		       bmc150_accel_get_fifo_state, NULL, 0);
 static IIO_DEVICE_ATTR(hwfifo_watermark, S_IRUGO,
 		       bmc150_accel_get_fifo_watermark, NULL, 0);
 
 static const struct attribute *bmc150_accel_fifo_attributes[] = {
-	&iio_const_attr_hwfifo_watermark_min.dev_attr.attr,
-	&iio_const_attr_hwfifo_watermark_max.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_min.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_max.dev_attr.attr,
 	&iio_dev_attr_hwfifo_watermark.dev_attr.attr,
 	&iio_dev_attr_hwfifo_enabled.dev_attr.attr,
 	NULL,
@@ -922,15 +1057,16 @@ static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
 	 * now.
 	 */
 	for (i = 0; i < count; i++) {
-		u16 sample[8];
 		int j, bit;
 
 		j = 0;
 		for_each_set_bit(bit, indio_dev->active_scan_mask,
 				 indio_dev->masklength)
-			memcpy(&sample[j++], &buffer[i * 3 + bit], 2);
+			memcpy(&data->scan.channels[j++], &buffer[i * 3 + bit],
+			       sizeof(data->scan.channels[0]));
 
-		iio_push_to_buffers_with_timestamp(indio_dev, sample, tstamp);
+		iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
+						   tstamp);
 
 		tstamp += sample_period;
 	}
@@ -1013,66 +1149,63 @@ static const struct iio_chan_spec bmc150_accel_channels[] =
 static const struct iio_chan_spec bma280_accel_channels[] =
 	BMC150_ACCEL_CHANNELS(14);
 
+/*
+ * The range for the Bosch sensors is typically +-2g/4g/8g/16g, distributed
+ * over the amount of bits (see above). The scale table can be calculated using
+ *     (range / 2^bits) * g = (range / 2^bits) * 9.80665 m/s^2
+ * e.g. for +-2g and 12 bits: (4 / 2^12) * 9.80665 m/s^2 = 0.0095768... m/s^2
+ * Multiply 10^6 and round to get the values listed below.
+ */
 static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
-	[bmc150] = {
-		.name = "BMC150A",
-		.chip_id = 0xFA,
-		.channels = bmc150_accel_channels,
-		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
-		.scale_table = { {9610, BMC150_ACCEL_DEF_RANGE_2G},
-				 {19122, BMC150_ACCEL_DEF_RANGE_4G},
-				 {38344, BMC150_ACCEL_DEF_RANGE_8G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-	[bmi055] = {
-		.name = "BMI055A",
-		.chip_id = 0xFA,
-		.channels = bmc150_accel_channels,
-		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
-		.scale_table = { {9610, BMC150_ACCEL_DEF_RANGE_2G},
-				 {19122, BMC150_ACCEL_DEF_RANGE_4G},
-				 {38344, BMC150_ACCEL_DEF_RANGE_8G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_16G} },
+	{
+		.name = "BMA222",
+		.chip_id = 0x03,
+		.channels = bma222e_accel_channels,
+		.num_channels = ARRAY_SIZE(bma222e_accel_channels),
+		.scale_table = { {153229, BMC150_ACCEL_DEF_RANGE_2G},
+				 {306458, BMC150_ACCEL_DEF_RANGE_4G},
+				 {612916, BMC150_ACCEL_DEF_RANGE_8G},
+				 {1225831, BMC150_ACCEL_DEF_RANGE_16G} },
 	},
-	[bma255] = {
-		.name = "BMA0255",
-		.chip_id = 0xFA,
-		.channels = bmc150_accel_channels,
-		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
-		.scale_table = { {9610, BMC150_ACCEL_DEF_RANGE_2G},
-				 {19122, BMC150_ACCEL_DEF_RANGE_4G},
-				 {38344, BMC150_ACCEL_DEF_RANGE_8G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_16G} },
+	{
+		.name = "BMA222E",
+		.chip_id = 0xF8,
+		.channels = bma222e_accel_channels,
+		.num_channels = ARRAY_SIZE(bma222e_accel_channels),
+		.scale_table = { {153229, BMC150_ACCEL_DEF_RANGE_2G},
+				 {306458, BMC150_ACCEL_DEF_RANGE_4G},
+				 {612916, BMC150_ACCEL_DEF_RANGE_8G},
+				 {1225831, BMC150_ACCEL_DEF_RANGE_16G} },
 	},
-	[bma250e] = {
+	{
 		.name = "BMA250E",
 		.chip_id = 0xF9,
 		.channels = bma250e_accel_channels,
 		.num_channels = ARRAY_SIZE(bma250e_accel_channels),
-		.scale_table = { {38344, BMC150_ACCEL_DEF_RANGE_2G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_4G},
-				 {153277, BMC150_ACCEL_DEF_RANGE_8G},
-				 {306457, BMC150_ACCEL_DEF_RANGE_16G} },
+		.scale_table = { {38307, BMC150_ACCEL_DEF_RANGE_2G},
+				 {76614, BMC150_ACCEL_DEF_RANGE_4G},
+				 {153229, BMC150_ACCEL_DEF_RANGE_8G},
+				 {306458, BMC150_ACCEL_DEF_RANGE_16G} },
 	},
-	[bma222e] = {
-		.name = "BMA222E",
-		.chip_id = 0xF8,
-		.channels = bma222e_accel_channels,
-		.num_channels = ARRAY_SIZE(bma222e_accel_channels),
-		.scale_table = { {153277, BMC150_ACCEL_DEF_RANGE_2G},
-				 {306457, BMC150_ACCEL_DEF_RANGE_4G},
-				 {612915, BMC150_ACCEL_DEF_RANGE_8G},
-				 {1225831, BMC150_ACCEL_DEF_RANGE_16G} },
+	{
+		.name = "BMA253/BMA254/BMA255/BMC150/BMC156/BMI055",
+		.chip_id = 0xFA,
+		.channels = bmc150_accel_channels,
+		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
+		.scale_table = { {9577, BMC150_ACCEL_DEF_RANGE_2G},
+				 {19154, BMC150_ACCEL_DEF_RANGE_4G},
+				 {38307, BMC150_ACCEL_DEF_RANGE_8G},
+				 {76614, BMC150_ACCEL_DEF_RANGE_16G} },
 	},
-	[bma280] = {
-		.name = "BMA0280",
+	{
+		.name = "BMA280",
 		.chip_id = 0xFB,
 		.channels = bma280_accel_channels,
 		.num_channels = ARRAY_SIZE(bma280_accel_channels),
-		.scale_table = { {2392, BMC150_ACCEL_DEF_RANGE_2G},
-				 {4785, BMC150_ACCEL_DEF_RANGE_4G},
-				 {9581, BMC150_ACCEL_DEF_RANGE_8G},
-				 {19152, BMC150_ACCEL_DEF_RANGE_16G} },
+		.scale_table = { {2394, BMC150_ACCEL_DEF_RANGE_2G},
+				 {4788, BMC150_ACCEL_DEF_RANGE_4G},
+				 {9577, BMC150_ACCEL_DEF_RANGE_8G},
+				 {19154, BMC150_ACCEL_DEF_RANGE_16G} },
 	},
 };
 
@@ -1125,7 +1258,7 @@ err_read:
 	return IRQ_HANDLED;
 }
 
-static int bmc150_accel_trig_try_reen(struct iio_trigger *trig)
+static void bmc150_accel_trig_reen(struct iio_trigger *trig)
 {
 	struct bmc150_accel_trigger *t = iio_trigger_get_drvdata(trig);
 	struct bmc150_accel_data *data = t->data;
@@ -1134,7 +1267,7 @@ static int bmc150_accel_trig_try_reen(struct iio_trigger *trig)
 
 	/* new data interrupts don't need ack */
 	if (t == &t->data->triggers[BMC150_ACCEL_TRIGGER_DATA_READY])
-		return 0;
+		return;
 
 	mutex_lock(&data->mutex);
 	/* clear any latched interrupt */
@@ -1142,12 +1275,8 @@ static int bmc150_accel_trig_try_reen(struct iio_trigger *trig)
 			   BMC150_ACCEL_INT_MODE_LATCH_INT |
 			   BMC150_ACCEL_INT_MODE_LATCH_RESET);
 	mutex_unlock(&data->mutex);
-	if (ret < 0) {
+	if (ret < 0)
 		dev_err(dev, "Error writing reg_int_rst_latch\n");
-		return ret;
-	}
-
-	return 0;
 }
 
 static int bmc150_accel_trigger_set_state(struct iio_trigger *trig,
@@ -1187,7 +1316,7 @@ static int bmc150_accel_trigger_set_state(struct iio_trigger *trig,
 
 static const struct iio_trigger_ops bmc150_accel_trigger_ops = {
 	.set_trigger_state = bmc150_accel_trigger_set_state,
-	.try_reenable = bmc150_accel_trig_try_reen,
+	.reenable = bmc150_accel_trig_reen,
 };
 
 static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev)
@@ -1345,15 +1474,14 @@ static int bmc150_accel_triggers_setup(struct iio_dev *indio_dev,
 		struct bmc150_accel_trigger *t = &data->triggers[i];
 
 		t->indio_trig = devm_iio_trigger_alloc(dev,
-					bmc150_accel_triggers[i].name,
+						       bmc150_accel_triggers[i].name,
 						       indio_dev->name,
-						       indio_dev->id);
+						       iio_device_id(indio_dev));
 		if (!t->indio_trig) {
 			ret = -ENOMEM;
 			break;
 		}
 
-		t->indio_trig->dev.parent = dev;
 		t->indio_trig->ops = &bmc150_accel_trigger_ops;
 		t->intr = bmc150_accel_triggers[i].intr;
 		t->data = data;
@@ -1410,8 +1538,8 @@ static int bmc150_accel_buffer_postenable(struct iio_dev *indio_dev)
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
 	int ret = 0;
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_postenable(indio_dev);
+	if (iio_device_get_current_mode(indio_dev) == INDIO_BUFFER_TRIGGERED)
+		return 0;
 
 	mutex_lock(&data->mutex);
 
@@ -1442,8 +1570,8 @@ static int bmc150_accel_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_predisable(indio_dev);
+	if (iio_device_get_current_mode(indio_dev) == INDIO_BUFFER_TRIGGERED)
+		return 0;
 
 	mutex_lock(&data->mutex);
 
@@ -1547,8 +1675,10 @@ static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
 }
 
 int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
-			    const char *name, bool block_supported)
+			    enum bmc150_type type, const char *name,
+			    bool block_supported)
 {
+	const struct attribute **fifo_attrs;
 	struct bmc150_accel_data *data;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -1559,22 +1689,46 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
 
 	data = iio_priv(indio_dev);
 	dev_set_drvdata(dev, indio_dev);
-	data->irq = irq;
 
 	data->regmap = regmap;
+	data->type = type;
+
+	if (!bmc150_apply_acpi_orientation(dev, &data->orientation)) {
+		ret = iio_read_mount_matrix(dev, &data->orientation);
+		if (ret)
+			return ret;
+	}
 
-	ret = iio_read_mount_matrix(dev, "mount-matrix",
-				     &data->orientation);
+	/*
+	 * VDD   is the analog and digital domain voltage supply
+	 * VDDIO is the digital I/O voltage supply
+	 */
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(dev,
+				      ARRAY_SIZE(data->regulators),
+				      data->regulators);
 	if (ret)
+		return dev_err_probe(dev, ret, "failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret) {
+		dev_err(dev, "failed to enable regulators: %d\n", ret);
 		return ret;
+	}
+	/*
+	 * 2ms or 3ms power-on time according to datasheets, let's better
+	 * be safe than sorry and set this delay to 5ms.
+	 */
+	msleep(5);
 
 	ret = bmc150_accel_chip_init(data);
 	if (ret < 0)
-		return ret;
+		goto err_disable_regulators;
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = data->chip_info->channels;
 	indio_dev->num_channels = data->chip_info->num_channels;
 	indio_dev->name = name ? name : data->chip_info->name;
@@ -1582,18 +1736,27 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &bmc150_accel_info;
 
-	ret = iio_triggered_buffer_setup(indio_dev,
-					 &iio_pollfunc_store_time,
-					 bmc150_accel_trigger_handler,
-					 &bmc150_accel_buffer_ops);
+	if (block_supported) {
+		indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
+		indio_dev->info = &bmc150_accel_info_fifo;
+		fifo_attrs = bmc150_accel_fifo_attributes;
+	} else {
+		fifo_attrs = NULL;
+	}
+
+	ret = iio_triggered_buffer_setup_ext(indio_dev,
+					     &iio_pollfunc_store_time,
+					     bmc150_accel_trigger_handler,
+					     IIO_BUFFER_DIRECTION_IN,
+					     &bmc150_accel_buffer_ops,
+					     fifo_attrs);
 	if (ret < 0) {
 		dev_err(dev, "Failed: iio triggered buffer setup\n");
-		return ret;
+		goto err_disable_regulators;
 	}
 
-	if (data->irq > 0) {
-		ret = devm_request_threaded_irq(
-						dev, data->irq,
+	if (irq > 0) {
+		ret = devm_request_threaded_irq(dev, irq,
 						bmc150_accel_irq_handler,
 						bmc150_accel_irq_thread_handler,
 						IRQF_TRIGGER_RISING,
@@ -1615,18 +1778,11 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
 			goto err_buffer_cleanup;
 		}
 
-		bmc150_accel_interrupts_setup(indio_dev, data);
+		bmc150_accel_interrupts_setup(indio_dev, data, irq);
 
 		ret = bmc150_accel_triggers_setup(indio_dev, data);
 		if (ret)
 			goto err_buffer_cleanup;
-
-		if (block_supported) {
-			indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
-			indio_dev->info = &bmc150_accel_info_fifo;
-			iio_buffer_set_attrs(indio_dev->buffer,
-					     bmc150_accel_fifo_attributes);
-		}
 	}
 
 	ret = pm_runtime_set_active(dev);
@@ -1640,21 +1796,27 @@ int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(dev, "Unable to register iio device\n");
-		goto err_trigger_unregister;
+		goto err_pm_cleanup;
 	}
 
 	return 0;
 
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(dev);
+	pm_runtime_disable(dev);
 err_trigger_unregister:
 	bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1);
 err_buffer_cleanup:
 	iio_triggered_buffer_cleanup(indio_dev);
+err_disable_regulators:
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators),
+			       data->regulators);
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(bmc150_accel_core_probe);
+EXPORT_SYMBOL_NS_GPL(bmc150_accel_core_probe, IIO_BMC150);
 
-int bmc150_accel_core_remove(struct device *dev)
+void bmc150_accel_core_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct bmc150_accel_data *data = iio_priv(indio_dev);
@@ -1663,7 +1825,6 @@ int bmc150_accel_core_remove(struct device *dev)
 
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
-	pm_runtime_put_noidle(dev);
 
 	bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1);
 
@@ -1673,9 +1834,10 @@ int bmc150_accel_core_remove(struct device *dev)
 	bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_DEEP_SUSPEND, 0);
 	mutex_unlock(&data->mutex);
 
-	return 0;
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators),
+			       data->regulators);
 }
-EXPORT_SYMBOL_GPL(bmc150_accel_core_remove);
+EXPORT_SYMBOL_NS_GPL(bmc150_accel_core_remove, IIO_BMC150);
 
 #ifdef CONFIG_PM_SLEEP
 static int bmc150_accel_suspend(struct device *dev)
@@ -1700,6 +1862,9 @@ static int bmc150_accel_resume(struct device *dev)
 	bmc150_accel_fifo_set_mode(data);
 	mutex_unlock(&data->mutex);
 
+	if (data->resume_callback)
+		data->resume_callback(dev);
+
 	return 0;
 }
 #endif
@@ -1747,7 +1912,7 @@ const struct dev_pm_ops bmc150_accel_pm_ops = {
 	SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
 			   bmc150_accel_runtime_resume, NULL)
 };
-EXPORT_SYMBOL_GPL(bmc150_accel_pm_ops);
+EXPORT_SYMBOL_NS_GPL(bmc150_accel_pm_ops, IIO_BMC150);
 
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/bmc150-accel-i2c.c b/drivers/iio/accel/bmc150-accel-i2c.c
index 06021c8685a7..be8cc598b88e 100644
--- a/drivers/iio/accel/bmc150-accel-i2c.c
+++ b/drivers/iio/accel/bmc150-accel-i2c.c
@@ -1,13 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * 3-axis accelerometer driver supporting following I2C Bosch-Sensortec chips:
- *  - BMC150
- *  - BMI055
- *  - BMA255
- *  - BMA250E
- *  - BMA222E
- *  - BMA280
- *
+ * 3-axis accelerometer driver supporting many I2C Bosch-Sensortec chips
  * Copyright (c) 2014, Intel Corporation.
  */
 
@@ -20,15 +13,175 @@
 
 #include "bmc150-accel.h"
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id bmc150_acpi_dual_accel_ids[] = {
+	{"BOSC0200"},
+	{"DUAL250E"},
+	{ }
+};
+
+/*
+ * The DUAL250E ACPI device for 360° hinges type 2-in-1s with 1 accelerometer
+ * in the display and 1 in the hinge has an ACPI-method (DSM) to tell the
+ * ACPI code about the angle between the 2 halves. This will make the ACPI
+ * code enable/disable the keyboard and touchpad. We need to call this to avoid
+ * the keyboard being disabled when the 2-in-1 is turned-on or resumed while
+ * fully folded into tablet mode (which gets detected with a HALL-sensor).
+ * If we don't call this then the keyboard won't work even when the 2-in-1 is
+ * changed to be used in laptop mode after the power-on / resume.
+ *
+ * This DSM takes 2 angles, selected by setting aux0 to 0 or 1, these presumably
+ * define the angle between the gravity vector measured by the accelerometer in
+ * the display (aux0=0) resp. the base (aux0=1) and some reference vector.
+ * The 2 angles get subtracted from each other so the reference vector does
+ * not matter and we can simply leave the second angle at 0.
+ */
+
+#define BMC150_DSM_GUID				"7681541e-8827-4239-8d9d-36be7fe12542"
+#define DUAL250E_SET_ANGLE_FN_INDEX		3
+
+struct dual250e_set_angle_args {
+	u32 aux0;
+	u32 ang0;
+	u32 rawx;
+	u32 rawy;
+	u32 rawz;
+} __packed;
+
+static bool bmc150_acpi_set_angle_dsm(struct i2c_client *client, u32 aux0, u32 ang0)
+{
+	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
+	struct dual250e_set_angle_args args = {
+		.aux0 = aux0,
+		.ang0 = ang0,
+	};
+	union acpi_object args_obj, *obj;
+	guid_t guid;
+
+	if (!acpi_dev_hid_uid_match(adev, "DUAL250E", NULL))
+		return false;
+
+	guid_parse(BMC150_DSM_GUID, &guid);
+
+	if (!acpi_check_dsm(adev->handle, &guid, 0, BIT(DUAL250E_SET_ANGLE_FN_INDEX)))
+		return false;
+
+	/*
+	 * Note this triggers the following warning:
+	 * "ACPI Warning: \_SB.PCI0.I2C2.ACC1._DSM: Argument #4 type mismatch -
+	 *                Found [Buffer], ACPI requires [Package]"
+	 * This is unavoidable since the _DSM implementation expects a "naked"
+	 * buffer, so wrapping it in a package will _not_ work.
+	 */
+	args_obj.type = ACPI_TYPE_BUFFER;
+	args_obj.buffer.length = sizeof(args);
+	args_obj.buffer.pointer = (u8 *)&args;
+
+	obj = acpi_evaluate_dsm(adev->handle, &guid, 0, DUAL250E_SET_ANGLE_FN_INDEX, &args_obj);
+	if (!obj) {
+		dev_err(&client->dev, "Failed to call DSM to enable keyboard and touchpad\n");
+		return false;
+	}
+
+	ACPI_FREE(obj);
+	return true;
+}
+
+static bool bmc150_acpi_enable_keyboard(struct i2c_client *client)
+{
+	/*
+	 * The EC must see a change for it to re-enable the kbd, so first
+	 * set the angle to 270° (tent/stand mode) and then change it to
+	 * 90° (laptop mode).
+	 */
+	if (!bmc150_acpi_set_angle_dsm(client, 0, 270))
+		return false;
+
+	/* The EC needs some time to notice the angle being changed */
+	msleep(100);
+
+	return bmc150_acpi_set_angle_dsm(client, 0, 90);
+}
+
+static void bmc150_acpi_resume_work(struct work_struct *work)
+{
+	struct bmc150_accel_data *data =
+		container_of(work, struct bmc150_accel_data, resume_work.work);
+
+	bmc150_acpi_enable_keyboard(data->second_device);
+}
+
+static void bmc150_acpi_resume_handler(struct device *dev)
+{
+	struct bmc150_accel_data *data = iio_priv(dev_get_drvdata(dev));
+
+	/*
+	 * Delay the bmc150_acpi_enable_keyboard() call till after the system
+	 * resume has completed, otherwise it will not work.
+	 */
+	schedule_delayed_work(&data->resume_work, msecs_to_jiffies(1000));
+}
+
+/*
+ * Some acpi_devices describe 2 accelerometers in a single ACPI device,
+ * try instantiating a second i2c_client for an I2cSerialBusV2 ACPI resource
+ * with index 1.
+ */
+static void bmc150_acpi_dual_accel_probe(struct i2c_client *client)
+{
+	struct bmc150_accel_data *data = iio_priv(i2c_get_clientdata(client));
+	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
+	char dev_name[16];
+	struct i2c_board_info board_info = {
+		.type = "bmc150_accel",
+		.dev_name = dev_name,
+		.fwnode = client->dev.fwnode,
+	};
+
+	if (acpi_match_device_ids(adev, bmc150_acpi_dual_accel_ids))
+		return;
+
+	/*
+	 * The 2nd accel sits in the base of 2-in-1s. The suffix is static, as
+	 * there should never be more then 1 ACPI node with 2 accelerometers.
+	 */
+	snprintf(dev_name, sizeof(dev_name), "%s:base", acpi_device_hid(adev));
+
+	board_info.irq = acpi_dev_gpio_irq_get(adev, 1);
+
+	data->second_device = i2c_acpi_new_device(&client->dev, 1, &board_info);
+
+	if (!IS_ERR(data->second_device) && bmc150_acpi_enable_keyboard(data->second_device)) {
+		INIT_DELAYED_WORK(&data->resume_work, bmc150_acpi_resume_work);
+		data->resume_callback = bmc150_acpi_resume_handler;
+	}
+}
+
+static void bmc150_acpi_dual_accel_remove(struct i2c_client *client)
+{
+	struct bmc150_accel_data *data = iio_priv(i2c_get_clientdata(client));
+
+	if (data->resume_callback)
+		cancel_delayed_work_sync(&data->resume_work);
+
+	i2c_unregister_device(data->second_device);
+}
+#else
+static void bmc150_acpi_dual_accel_probe(struct i2c_client *client) {}
+static void bmc150_acpi_dual_accel_remove(struct i2c_client *client) {}
+#endif
+
 static int bmc150_accel_probe(struct i2c_client *client,
 			      const struct i2c_device_id *id)
 {
 	struct regmap *regmap;
 	const char *name = NULL;
+	enum bmc150_type type = BOSCH_UNKNOWN;
 	bool block_supported =
 		i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
 		i2c_check_functionality(client->adapter,
 					I2C_FUNC_SMBUS_READ_I2C_BLOCK);
+	int ret;
 
 	regmap = devm_regmap_init_i2c(client, &bmc150_regmap_conf);
 	if (IS_ERR(regmap)) {
@@ -36,50 +189,75 @@ static int bmc150_accel_probe(struct i2c_client *client,
 		return PTR_ERR(regmap);
 	}
 
-	if (id)
+	if (id) {
 		name = id->name;
+		type = id->driver_data;
+	}
 
-	return bmc150_accel_core_probe(&client->dev, regmap, client->irq, name,
-				       block_supported);
+	ret = bmc150_accel_core_probe(&client->dev, regmap, client->irq,
+				      type, name, block_supported);
+	if (ret)
+		return ret;
+
+	/*
+	 * The !id check avoids recursion when probe() gets called
+	 * for the second client.
+	 */
+	if (!id && has_acpi_companion(&client->dev))
+		bmc150_acpi_dual_accel_probe(client);
+
+	return 0;
 }
 
-static int bmc150_accel_remove(struct i2c_client *client)
+static void bmc150_accel_remove(struct i2c_client *client)
 {
-	return bmc150_accel_core_remove(&client->dev);
+	bmc150_acpi_dual_accel_remove(client);
+
+	bmc150_accel_core_remove(&client->dev);
 }
 
 static const struct acpi_device_id bmc150_accel_acpi_match[] = {
-	{"BSBA0150",	bmc150},
-	{"BMC150A",	bmc150},
-	{"BMI055A",	bmi055},
-	{"BMA0255",	bma255},
-	{"BMA250E",	bma250e},
-	{"BMA222E",	bma222e},
-	{"BMA0280",	bma280},
+	{"BMA0255"},
+	{"BMA0280"},
+	{"BMA222"},
+	{"BMA222E"},
+	{"BMA250E"},
+	{"BMC150A"},
+	{"BMI055A"},
 	{"BOSC0200"},
+	{"BSBA0150"},
+	{"DUAL250E"},
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
 
 static const struct i2c_device_id bmc150_accel_id[] = {
-	{"bmc150_accel",	bmc150},
-	{"bmi055_accel",	bmi055},
-	{"bma255",		bma255},
-	{"bma250e",		bma250e},
-	{"bma222e",		bma222e},
-	{"bma280",		bma280},
+	{"bma222"},
+	{"bma222e"},
+	{"bma250e"},
+	{"bma253"},
+	{"bma254"},
+	{"bma255"},
+	{"bma280"},
+	{"bmc150_accel"},
+	{"bmc156_accel", BOSCH_BMC156},
+	{"bmi055_accel"},
 	{}
 };
 
 MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
 
 static const struct of_device_id bmc150_accel_of_match[] = {
-	{ .compatible = "bosch,bmc150_accel" },
-	{ .compatible = "bosch,bmi055_accel" },
-	{ .compatible = "bosch,bma255" },
-	{ .compatible = "bosch,bma250e" },
+	{ .compatible = "bosch,bma222" },
 	{ .compatible = "bosch,bma222e" },
+	{ .compatible = "bosch,bma250e" },
+	{ .compatible = "bosch,bma253" },
+	{ .compatible = "bosch,bma254" },
+	{ .compatible = "bosch,bma255" },
 	{ .compatible = "bosch,bma280" },
+	{ .compatible = "bosch,bmc150_accel" },
+	{ .compatible = "bosch,bmc156_accel" },
+	{ .compatible = "bosch,bmi055_accel" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmc150_accel_of_match);
@@ -100,3 +278,4 @@ module_i2c_driver(bmc150_accel_driver);
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("BMC150 I2C accelerometer driver");
+MODULE_IMPORT_NS(IIO_BMC150);
diff --git a/drivers/iio/accel/bmc150-accel-spi.c b/drivers/iio/accel/bmc150-accel-spi.c
index 2a8c311d6f5a..921fb46be0b8 100644
--- a/drivers/iio/accel/bmc150-accel-spi.c
+++ b/drivers/iio/accel/bmc150-accel-spi.c
@@ -16,6 +16,8 @@
 static int bmc150_accel_probe(struct spi_device *spi)
 {
 	struct regmap *regmap;
+	const char *name = NULL;
+	enum bmc150_type type = BOSCH_UNKNOWN;
 	const struct spi_device_id *id = spi_get_device_id(spi);
 
 	regmap = devm_regmap_init_spi(spi, &bmc150_regmap_conf);
@@ -24,34 +26,43 @@ static int bmc150_accel_probe(struct spi_device *spi)
 		return PTR_ERR(regmap);
 	}
 
-	return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, id->name,
+	if (id) {
+		name = id->name;
+		type = id->driver_data;
+	}
+
+	return bmc150_accel_core_probe(&spi->dev, regmap, spi->irq, type, name,
 				       true);
 }
 
-static int bmc150_accel_remove(struct spi_device *spi)
+static void bmc150_accel_remove(struct spi_device *spi)
 {
-	return bmc150_accel_core_remove(&spi->dev);
+	bmc150_accel_core_remove(&spi->dev);
 }
 
 static const struct acpi_device_id bmc150_accel_acpi_match[] = {
-	{"BSBA0150",	bmc150},
-	{"BMC150A",	bmc150},
-	{"BMI055A",	bmi055},
-	{"BMA0255",	bma255},
-	{"BMA250E",	bma250e},
-	{"BMA222E",	bma222e},
-	{"BMA0280",	bma280},
+	{"BMA0255"},
+	{"BMA0280"},
+	{"BMA222"},
+	{"BMA222E"},
+	{"BMA250E"},
+	{"BMC150A"},
+	{"BMI055A"},
+	{"BSBA0150"},
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
 
 static const struct spi_device_id bmc150_accel_id[] = {
-	{"bmc150_accel",	bmc150},
-	{"bmi055_accel",	bmi055},
-	{"bma255",		bma255},
-	{"bma250e",		bma250e},
-	{"bma222e",		bma222e},
-	{"bma280",		bma280},
+	{"bma222"},
+	{"bma222e"},
+	{"bma250e"},
+	{"bma253"},
+	{"bma255"},
+	{"bma280"},
+	{"bmc150_accel"},
+	{"bmc156_accel", BOSCH_BMC156},
+	{"bmi055_accel"},
 	{}
 };
 MODULE_DEVICE_TABLE(spi, bmc150_accel_id);
@@ -71,3 +82,4 @@ module_spi_driver(bmc150_accel_driver);
 MODULE_AUTHOR("Markus Pargmann <mpa@pengutronix.de>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("BMC150 SPI accelerometer driver");
+MODULE_IMPORT_NS(IIO_BMC150);
diff --git a/drivers/iio/accel/bmc150-accel.h b/drivers/iio/accel/bmc150-accel.h
index ae6118ae11b1..7775c5edaeef 100644
--- a/drivers/iio/accel/bmc150-accel.h
+++ b/drivers/iio/accel/bmc150-accel.h
@@ -2,20 +2,93 @@
 #ifndef _BMC150_ACCEL_H_
 #define _BMC150_ACCEL_H_
 
+#include <linux/atomic.h>
+#include <linux/iio/iio.h>
+#include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
+#include <linux/workqueue.h>
+
 struct regmap;
+struct i2c_client;
+struct bmc150_accel_chip_info;
+struct bmc150_accel_interrupt_info;
+
+/*
+ * We can often guess better than "UNKNOWN" based on the device IDs
+ * but unfortunately this information is not always accurate. There are some
+ * devices where ACPI firmware specifies an ID like "BMA250E" when the device
+ * actually has a BMA222E. The driver attempts to detect those by reading the
+ * chip ID from the registers but this information is not always enough either.
+ *
+ * Therefore, this enum should be only used when the chip ID detection is not
+ * enough and we can be reasonably sure that the device IDs are reliable
+ * in practice (e.g. for device tree platforms).
+ */
+enum bmc150_type {
+	BOSCH_UNKNOWN,
+	BOSCH_BMC156,
+};
+
+struct bmc150_accel_interrupt {
+	const struct bmc150_accel_interrupt_info *info;
+	atomic_t users;
+};
+
+struct bmc150_accel_trigger {
+	struct bmc150_accel_data *data;
+	struct iio_trigger *indio_trig;
+	int (*setup)(struct bmc150_accel_trigger *t, bool state);
+	int intr;
+	bool enabled;
+};
+
+enum bmc150_accel_interrupt_id {
+	BMC150_ACCEL_INT_DATA_READY,
+	BMC150_ACCEL_INT_ANY_MOTION,
+	BMC150_ACCEL_INT_WATERMARK,
+	BMC150_ACCEL_INTERRUPTS,
+};
+
+enum bmc150_accel_trigger_id {
+	BMC150_ACCEL_TRIGGER_DATA_READY,
+	BMC150_ACCEL_TRIGGER_ANY_MOTION,
+	BMC150_ACCEL_TRIGGERS,
+};
 
-enum {
-	bmc150,
-	bmi055,
-	bma255,
-	bma250e,
-	bma222e,
-	bma280,
+struct bmc150_accel_data {
+	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
+	struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
+	struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
+	struct mutex mutex;
+	u8 fifo_mode, watermark;
+	s16 buffer[8];
+	/*
+	 * Ensure there is sufficient space and correct alignment for
+	 * the timestamp if enabled
+	 */
+	struct {
+		__le16 channels[3];
+		s64 ts __aligned(8);
+	} scan;
+	u8 bw_bits;
+	u32 slope_dur;
+	u32 slope_thres;
+	u32 range;
+	int ev_enable_state;
+	int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */
+	const struct bmc150_accel_chip_info *chip_info;
+	enum bmc150_type type;
+	struct i2c_client *second_device;
+	void (*resume_callback)(struct device *dev);
+	struct delayed_work resume_work;
+	struct iio_mount_matrix orientation;
 };
 
 int bmc150_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
-			    const char *name, bool block_supported);
-int bmc150_accel_core_remove(struct device *dev);
+			    enum bmc150_type type, const char *name,
+			    bool block_supported);
+void bmc150_accel_core_remove(struct device *dev);
 extern const struct dev_pm_ops bmc150_accel_pm_ops;
 extern const struct regmap_config bmc150_regmap_conf;
 
diff --git a/drivers/iio/accel/bmi088-accel-core.c b/drivers/iio/accel/bmi088-accel-core.c
new file mode 100644
index 000000000000..84edcc78d796
--- /dev/null
+++ b/drivers/iio/accel/bmi088-accel-core.c
@@ -0,0 +1,632 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 3-axis accelerometer driver supporting following Bosch-Sensortec chips:
+ *  - BMI088
+ *
+ * Copyright (c) 2018-2021, Topic Embedded Products
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <asm/unaligned.h>
+
+#include "bmi088-accel.h"
+
+#define BMI088_ACCEL_REG_CHIP_ID			0x00
+#define BMI088_ACCEL_REG_ERROR				0x02
+
+#define BMI088_ACCEL_REG_INT_STATUS			0x1D
+#define BMI088_ACCEL_INT_STATUS_BIT_DRDY		BIT(7)
+
+#define BMI088_ACCEL_REG_RESET				0x7E
+#define BMI088_ACCEL_RESET_VAL				0xB6
+
+#define BMI088_ACCEL_REG_PWR_CTRL			0x7D
+#define BMI088_ACCEL_REG_PWR_CONF			0x7C
+
+#define BMI088_ACCEL_REG_INT_MAP_DATA			0x58
+#define BMI088_ACCEL_INT_MAP_DATA_BIT_INT1_DRDY		BIT(2)
+#define BMI088_ACCEL_INT_MAP_DATA_BIT_INT2_FWM		BIT(5)
+
+#define BMI088_ACCEL_REG_INT1_IO_CONF			0x53
+#define BMI088_ACCEL_INT1_IO_CONF_BIT_ENABLE_OUT	BIT(3)
+#define BMI088_ACCEL_INT1_IO_CONF_BIT_LVL		BIT(1)
+
+#define BMI088_ACCEL_REG_INT2_IO_CONF			0x54
+#define BMI088_ACCEL_INT2_IO_CONF_BIT_ENABLE_OUT	BIT(3)
+#define BMI088_ACCEL_INT2_IO_CONF_BIT_LVL		BIT(1)
+
+#define BMI088_ACCEL_REG_ACC_CONF			0x40
+#define BMI088_ACCEL_MODE_ODR_MASK			0x0f
+
+#define BMI088_ACCEL_REG_ACC_RANGE			0x41
+#define BMI088_ACCEL_RANGE_3G				0x00
+#define BMI088_ACCEL_RANGE_6G				0x01
+#define BMI088_ACCEL_RANGE_12G				0x02
+#define BMI088_ACCEL_RANGE_24G				0x03
+
+#define BMI088_ACCEL_REG_TEMP				0x22
+#define BMI088_ACCEL_REG_TEMP_SHIFT			5
+#define BMI088_ACCEL_TEMP_UNIT				125
+#define BMI088_ACCEL_TEMP_OFFSET			23000
+
+#define BMI088_ACCEL_REG_XOUT_L				0x12
+#define BMI088_ACCEL_AXIS_TO_REG(axis) \
+	(BMI088_ACCEL_REG_XOUT_L + (axis * 2))
+
+#define BMI088_ACCEL_MAX_STARTUP_TIME_US		1000
+#define BMI088_AUTO_SUSPEND_DELAY_MS			2000
+
+#define BMI088_ACCEL_REG_FIFO_STATUS			0x0E
+#define BMI088_ACCEL_REG_FIFO_CONFIG0			0x48
+#define BMI088_ACCEL_REG_FIFO_CONFIG1			0x49
+#define BMI088_ACCEL_REG_FIFO_DATA			0x3F
+#define BMI088_ACCEL_FIFO_LENGTH			100
+
+#define BMI088_ACCEL_FIFO_MODE_FIFO			0x40
+#define BMI088_ACCEL_FIFO_MODE_STREAM			0x80
+
+#define BMIO088_ACCEL_ACC_RANGE_MSK			GENMASK(1, 0)
+
+enum bmi088_accel_axis {
+	AXIS_X,
+	AXIS_Y,
+	AXIS_Z,
+};
+
+static const int bmi088_sample_freqs[] = {
+	12, 500000,
+	25, 0,
+	50, 0,
+	100, 0,
+	200, 0,
+	400, 0,
+	800, 0,
+	1600, 0,
+};
+
+/* Available OSR (over sampling rate) sets the 3dB cut-off frequency */
+enum bmi088_osr_modes {
+	BMI088_ACCEL_MODE_OSR_NORMAL = 0xA,
+	BMI088_ACCEL_MODE_OSR_2 = 0x9,
+	BMI088_ACCEL_MODE_OSR_4 = 0x8,
+};
+
+/* Available ODR (output data rates) in Hz */
+enum bmi088_odr_modes {
+	BMI088_ACCEL_MODE_ODR_12_5 = 0x5,
+	BMI088_ACCEL_MODE_ODR_25 = 0x6,
+	BMI088_ACCEL_MODE_ODR_50 = 0x7,
+	BMI088_ACCEL_MODE_ODR_100 = 0x8,
+	BMI088_ACCEL_MODE_ODR_200 = 0x9,
+	BMI088_ACCEL_MODE_ODR_400 = 0xa,
+	BMI088_ACCEL_MODE_ODR_800 = 0xb,
+	BMI088_ACCEL_MODE_ODR_1600 = 0xc,
+};
+
+struct bmi088_scale_info {
+	int scale;
+	u8 reg_range;
+};
+
+struct bmi088_accel_chip_info {
+	const char *name;
+	u8 chip_id;
+	const struct iio_chan_spec *channels;
+	int num_channels;
+	const int scale_table[4][2];
+};
+
+struct bmi088_accel_data {
+	struct regmap *regmap;
+	const struct bmi088_accel_chip_info *chip_info;
+	u8 buffer[2] __aligned(IIO_DMA_MINALIGN); /* shared DMA safe buffer */
+};
+
+static const struct regmap_range bmi088_volatile_ranges[] = {
+	/* All registers below 0x40 are volatile, except the CHIP ID. */
+	regmap_reg_range(BMI088_ACCEL_REG_ERROR, 0x3f),
+	/* Mark the RESET as volatile too, it is self-clearing */
+	regmap_reg_range(BMI088_ACCEL_REG_RESET, BMI088_ACCEL_REG_RESET),
+};
+
+static const struct regmap_access_table bmi088_volatile_table = {
+	.yes_ranges	= bmi088_volatile_ranges,
+	.n_yes_ranges	= ARRAY_SIZE(bmi088_volatile_ranges),
+};
+
+const struct regmap_config bmi088_regmap_conf = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = 0x7E,
+	.volatile_table = &bmi088_volatile_table,
+	.cache_type = REGCACHE_RBTREE,
+};
+EXPORT_SYMBOL_NS_GPL(bmi088_regmap_conf, IIO_BMI088);
+
+static int bmi088_accel_power_up(struct bmi088_accel_data *data)
+{
+	int ret;
+
+	/* Enable accelerometer and temperature sensor */
+	ret = regmap_write(data->regmap, BMI088_ACCEL_REG_PWR_CTRL, 0x4);
+	if (ret)
+		return ret;
+
+	/* Datasheet recommends to wait at least 5ms before communication */
+	usleep_range(5000, 6000);
+
+	/* Disable suspend mode */
+	ret = regmap_write(data->regmap, BMI088_ACCEL_REG_PWR_CONF, 0x0);
+	if (ret)
+		return ret;
+
+	/* Recommended at least 1ms before further communication */
+	usleep_range(1000, 1200);
+
+	return 0;
+}
+
+static int bmi088_accel_power_down(struct bmi088_accel_data *data)
+{
+	int ret;
+
+	/* Enable suspend mode */
+	ret = regmap_write(data->regmap, BMI088_ACCEL_REG_PWR_CONF, 0x3);
+	if (ret)
+		return ret;
+
+	/* Recommended at least 1ms before further communication */
+	usleep_range(1000, 1200);
+
+	/* Disable accelerometer and temperature sensor */
+	ret = regmap_write(data->regmap, BMI088_ACCEL_REG_PWR_CTRL, 0x0);
+	if (ret)
+		return ret;
+
+	/* Datasheet recommends to wait at least 5ms before communication */
+	usleep_range(5000, 6000);
+
+	return 0;
+}
+
+static int bmi088_accel_get_sample_freq(struct bmi088_accel_data *data,
+					int *val, int *val2)
+{
+	unsigned int value;
+	int ret;
+
+	ret = regmap_read(data->regmap, BMI088_ACCEL_REG_ACC_CONF,
+			  &value);
+	if (ret)
+		return ret;
+
+	value &= BMI088_ACCEL_MODE_ODR_MASK;
+	value -= BMI088_ACCEL_MODE_ODR_12_5;
+	value <<= 1;
+
+	if (value >= ARRAY_SIZE(bmi088_sample_freqs) - 1)
+		return -EINVAL;
+
+	*val = bmi088_sample_freqs[value];
+	*val2 = bmi088_sample_freqs[value + 1];
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int bmi088_accel_set_sample_freq(struct bmi088_accel_data *data, int val)
+{
+	unsigned int regval;
+	int index = 0;
+
+	while (index < ARRAY_SIZE(bmi088_sample_freqs) &&
+	       bmi088_sample_freqs[index] != val)
+		index += 2;
+
+	if (index >= ARRAY_SIZE(bmi088_sample_freqs))
+		return -EINVAL;
+
+	regval = (index >> 1) + BMI088_ACCEL_MODE_ODR_12_5;
+
+	return regmap_update_bits(data->regmap, BMI088_ACCEL_REG_ACC_CONF,
+				  BMI088_ACCEL_MODE_ODR_MASK, regval);
+}
+
+static int bmi088_accel_set_scale(struct bmi088_accel_data *data, int val, int val2)
+{
+	unsigned int i;
+
+	for (i = 0; i < 4; i++)
+		if (val  == data->chip_info->scale_table[i][0] &&
+		    val2 == data->chip_info->scale_table[i][1])
+			break;
+
+	if (i == 4)
+		return -EINVAL;
+
+	return regmap_write(data->regmap, BMI088_ACCEL_REG_ACC_RANGE, i);
+}
+
+static int bmi088_accel_get_temp(struct bmi088_accel_data *data, int *val)
+{
+	int ret;
+	s16 temp;
+
+	ret = regmap_bulk_read(data->regmap, BMI088_ACCEL_REG_TEMP,
+			       &data->buffer, sizeof(__be16));
+	if (ret)
+		return ret;
+
+	/* data->buffer is cacheline aligned */
+	temp = be16_to_cpu(*(__be16 *)data->buffer);
+
+	*val = temp >> BMI088_ACCEL_REG_TEMP_SHIFT;
+
+	return IIO_VAL_INT;
+}
+
+static int bmi088_accel_get_axis(struct bmi088_accel_data *data,
+				 struct iio_chan_spec const *chan,
+				 int *val)
+{
+	int ret;
+	s16 raw_val;
+
+	ret = regmap_bulk_read(data->regmap,
+			       BMI088_ACCEL_AXIS_TO_REG(chan->scan_index),
+			       data->buffer, sizeof(__le16));
+	if (ret)
+		return ret;
+
+	raw_val = le16_to_cpu(*(__le16 *)data->buffer);
+	*val = raw_val;
+
+	return IIO_VAL_INT;
+}
+
+static int bmi088_accel_read_raw(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan,
+				 int *val, int *val2, long mask)
+{
+	struct bmi088_accel_data *data = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(data->regmap);
+	int ret;
+	int reg;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_TEMP:
+			ret = pm_runtime_resume_and_get(dev);
+			if (ret)
+				return ret;
+
+			ret = bmi088_accel_get_temp(data, val);
+			goto out_read_raw_pm_put;
+		case IIO_ACCEL:
+			ret = pm_runtime_resume_and_get(dev);
+			if (ret)
+				return ret;
+
+			ret = iio_device_claim_direct_mode(indio_dev);
+			if (ret)
+				goto out_read_raw_pm_put;
+
+			ret = bmi088_accel_get_axis(data, chan, val);
+			iio_device_release_direct_mode(indio_dev);
+			if (!ret)
+				ret = IIO_VAL_INT;
+
+			goto out_read_raw_pm_put;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		switch (chan->type) {
+		case IIO_TEMP:
+			/* Offset applies before scale */
+			*val = BMI088_ACCEL_TEMP_OFFSET/BMI088_ACCEL_TEMP_UNIT;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_TEMP:
+			/* 0.125 degrees per LSB */
+			*val = BMI088_ACCEL_TEMP_UNIT;
+			return IIO_VAL_INT;
+		case IIO_ACCEL:
+			ret = pm_runtime_resume_and_get(dev);
+			if (ret)
+				return ret;
+
+			ret = regmap_read(data->regmap,
+					  BMI088_ACCEL_REG_ACC_RANGE, &reg);
+			if (ret)
+				goto out_read_raw_pm_put;
+
+			reg = FIELD_GET(BMIO088_ACCEL_ACC_RANGE_MSK, reg);
+			*val  = data->chip_info->scale_table[reg][0];
+			*val2 = data->chip_info->scale_table[reg][1];
+			ret = IIO_VAL_INT_PLUS_MICRO;
+
+			goto out_read_raw_pm_put;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret)
+			return ret;
+
+		ret = bmi088_accel_get_sample_freq(data, val, val2);
+		goto out_read_raw_pm_put;
+	default:
+		break;
+	}
+
+	return -EINVAL;
+
+out_read_raw_pm_put:
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+static int bmi088_accel_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	struct bmi088_accel_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (const int *)data->chip_info->scale_table;
+		*length = 8;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*vals = bmi088_sample_freqs;
+		*length = ARRAY_SIZE(bmi088_sample_freqs);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bmi088_accel_write_raw(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  int val, int val2, long mask)
+{
+	struct bmi088_accel_data *data = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(data->regmap);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret)
+			return ret;
+
+		ret = bmi088_accel_set_scale(data, val, val2);
+		pm_runtime_mark_last_busy(dev);
+		pm_runtime_put_autosuspend(dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret)
+			return ret;
+
+		ret = bmi088_accel_set_sample_freq(data, val);
+		pm_runtime_mark_last_busy(dev);
+		pm_runtime_put_autosuspend(dev);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+#define BMI088_ACCEL_CHANNEL(_axis) { \
+	.type = IIO_ACCEL, \
+	.modified = 1, \
+	.channel2 = IIO_MOD_##_axis, \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+				BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+				BIT(IIO_CHAN_INFO_SCALE), \
+	.scan_index = AXIS_##_axis, \
+}
+
+static const struct iio_chan_spec bmi088_accel_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OFFSET),
+		.scan_index = -1,
+	},
+	BMI088_ACCEL_CHANNEL(X),
+	BMI088_ACCEL_CHANNEL(Y),
+	BMI088_ACCEL_CHANNEL(Z),
+	IIO_CHAN_SOFT_TIMESTAMP(3),
+};
+
+static const struct bmi088_accel_chip_info bmi088_accel_chip_info_tbl[] = {
+	[BOSCH_BMI085] = {
+		.name = "bmi085-accel",
+		.chip_id = 0x1F,
+		.channels = bmi088_accel_channels,
+		.num_channels = ARRAY_SIZE(bmi088_accel_channels),
+		.scale_table = {{0, 598}, {0, 1196}, {0, 2393}, {0, 4785}},
+	},
+	[BOSCH_BMI088] = {
+		.name = "bmi088-accel",
+		.chip_id = 0x1E,
+		.channels = bmi088_accel_channels,
+		.num_channels = ARRAY_SIZE(bmi088_accel_channels),
+		.scale_table = {{0, 897}, {0, 1794}, {0, 3589}, {0, 7178}},
+	},
+	[BOSCH_BMI090L] = {
+		.name = "bmi090l-accel",
+		.chip_id = 0x1A,
+		.channels = bmi088_accel_channels,
+		.num_channels = ARRAY_SIZE(bmi088_accel_channels),
+		.scale_table = {{0, 897}, {0, 1794}, {0, 3589}, {0, 7178}},
+	},
+};
+
+static const struct iio_info bmi088_accel_info = {
+	.read_raw	= bmi088_accel_read_raw,
+	.write_raw	= bmi088_accel_write_raw,
+	.read_avail	= bmi088_accel_read_avail,
+};
+
+static const unsigned long bmi088_accel_scan_masks[] = {
+	BIT(AXIS_X) | BIT(AXIS_Y) | BIT(AXIS_Z),
+	0
+};
+
+static int bmi088_accel_chip_init(struct bmi088_accel_data *data, enum bmi_device_type type)
+{
+	struct device *dev = regmap_get_device(data->regmap);
+	int ret, i;
+	unsigned int val;
+
+	if (type >= BOSCH_UNKNOWN)
+		return -ENODEV;
+
+	/* Do a dummy read to enable SPI interface, won't harm I2C */
+	regmap_read(data->regmap, BMI088_ACCEL_REG_INT_STATUS, &val);
+
+	/*
+	 * Reset chip to get it in a known good state. A delay of 1ms after
+	 * reset is required according to the data sheet
+	 */
+	ret = regmap_write(data->regmap, BMI088_ACCEL_REG_RESET,
+			   BMI088_ACCEL_RESET_VAL);
+	if (ret)
+		return ret;
+
+	usleep_range(1000, 2000);
+
+	/* Do a dummy read again after a reset to enable the SPI interface */
+	regmap_read(data->regmap, BMI088_ACCEL_REG_INT_STATUS, &val);
+
+	/* Read chip ID */
+	ret = regmap_read(data->regmap, BMI088_ACCEL_REG_CHIP_ID, &val);
+	if (ret) {
+		dev_err(dev, "Error: Reading chip id\n");
+		return ret;
+	}
+
+	/* Validate chip ID */
+	for (i = 0; i < ARRAY_SIZE(bmi088_accel_chip_info_tbl); i++)
+		if (bmi088_accel_chip_info_tbl[i].chip_id == val)
+			break;
+
+	if (i == ARRAY_SIZE(bmi088_accel_chip_info_tbl))
+		data->chip_info = &bmi088_accel_chip_info_tbl[type];
+	else
+		data->chip_info = &bmi088_accel_chip_info_tbl[i];
+
+	if (i != type)
+		dev_warn(dev, "unexpected chip id 0x%X\n", val);
+
+	return 0;
+}
+
+int bmi088_accel_core_probe(struct device *dev, struct regmap *regmap,
+	int irq, enum bmi_device_type type)
+{
+	struct bmi088_accel_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	dev_set_drvdata(dev, indio_dev);
+
+	data->regmap = regmap;
+
+	ret = bmi088_accel_chip_init(data, type);
+	if (ret)
+		return ret;
+
+	indio_dev->channels = data->chip_info->channels;
+	indio_dev->num_channels = data->chip_info->num_channels;
+	indio_dev->name = data->chip_info->name;
+	indio_dev->available_scan_masks = bmi088_accel_scan_masks;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &bmi088_accel_info;
+
+	/* Enable runtime PM */
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_suspended(dev);
+	pm_runtime_enable(dev);
+	/* We need ~6ms to startup, so set the delay to 6 seconds */
+	pm_runtime_set_autosuspend_delay(dev, 6000);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_put(dev);
+
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		dev_err(dev, "Unable to register iio device\n");
+
+	return ret;
+}
+EXPORT_SYMBOL_NS_GPL(bmi088_accel_core_probe, IIO_BMI088);
+
+
+void bmi088_accel_core_remove(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct bmi088_accel_data *data = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+	bmi088_accel_power_down(data);
+}
+EXPORT_SYMBOL_NS_GPL(bmi088_accel_core_remove, IIO_BMI088);
+
+static int bmi088_accel_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct bmi088_accel_data *data = iio_priv(indio_dev);
+
+	return bmi088_accel_power_down(data);
+}
+
+static int bmi088_accel_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct bmi088_accel_data *data = iio_priv(indio_dev);
+
+	return bmi088_accel_power_up(data);
+}
+
+EXPORT_NS_GPL_RUNTIME_DEV_PM_OPS(bmi088_accel_pm_ops,
+				 bmi088_accel_runtime_suspend,
+				 bmi088_accel_runtime_resume, NULL,
+				 IIO_BMI088);
+
+MODULE_AUTHOR("Niek van Agt <niek.van.agt@topicproducts.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMI088 accelerometer driver (core)");
diff --git a/drivers/iio/accel/bmi088-accel-spi.c b/drivers/iio/accel/bmi088-accel-spi.c
new file mode 100644
index 000000000000..ee540edd8412
--- /dev/null
+++ b/drivers/iio/accel/bmi088-accel-spi.c
@@ -0,0 +1,95 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * 3-axis accelerometer driver supporting following Bosch-Sensortec chips:
+ *  - BMI088
+ *
+ * Copyright (c) 2018-2020, Topic Embedded Products
+ */
+
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+
+#include "bmi088-accel.h"
+
+static int bmi088_regmap_spi_write(void *context, const void *data, size_t count)
+{
+	struct spi_device *spi = context;
+
+	/* Write register is same as generic SPI */
+	return spi_write(spi, data, count);
+}
+
+static int bmi088_regmap_spi_read(void *context, const void *reg,
+				size_t reg_size, void *val, size_t val_size)
+{
+	struct spi_device *spi = context;
+	u8 addr[2];
+
+	addr[0] = *(u8 *)reg;
+	addr[0] |= BIT(7); /* Set RW = '1' */
+	addr[1] = 0; /* Read requires a dummy byte transfer */
+
+	return spi_write_then_read(spi, addr, sizeof(addr), val, val_size);
+}
+
+static struct regmap_bus bmi088_regmap_bus = {
+	.write = bmi088_regmap_spi_write,
+	.read = bmi088_regmap_spi_read,
+};
+
+static int bmi088_accel_probe(struct spi_device *spi)
+{
+	struct regmap *regmap;
+	const struct spi_device_id *id = spi_get_device_id(spi);
+
+	regmap = devm_regmap_init(&spi->dev, &bmi088_regmap_bus,
+			spi, &bmi088_regmap_conf);
+
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "Failed to initialize spi regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	return bmi088_accel_core_probe(&spi->dev, regmap, spi->irq,
+					id->driver_data);
+}
+
+static void bmi088_accel_remove(struct spi_device *spi)
+{
+	bmi088_accel_core_remove(&spi->dev);
+}
+
+static const struct of_device_id bmi088_of_match[] = {
+	{ .compatible = "bosch,bmi085-accel" },
+	{ .compatible = "bosch,bmi088-accel" },
+	{ .compatible = "bosch,bmi090l-accel" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, bmi088_of_match);
+
+static const struct spi_device_id bmi088_accel_id[] = {
+	{"bmi085-accel",  BOSCH_BMI085},
+	{"bmi088-accel",  BOSCH_BMI088},
+	{"bmi090l-accel", BOSCH_BMI090L},
+	{}
+};
+MODULE_DEVICE_TABLE(spi, bmi088_accel_id);
+
+static struct spi_driver bmi088_accel_driver = {
+	.driver = {
+		.name	= "bmi088_accel_spi",
+		.pm	= pm_ptr(&bmi088_accel_pm_ops),
+		.of_match_table = bmi088_of_match,
+	},
+	.probe		= bmi088_accel_probe,
+	.remove		= bmi088_accel_remove,
+	.id_table	= bmi088_accel_id,
+};
+module_spi_driver(bmi088_accel_driver);
+
+MODULE_AUTHOR("Niek van Agt <niek.van.agt@topicproducts.com>");
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("BMI088 accelerometer driver (SPI)");
+MODULE_IMPORT_NS(IIO_BMI088);
diff --git a/drivers/iio/accel/bmi088-accel.h b/drivers/iio/accel/bmi088-accel.h
new file mode 100644
index 000000000000..80cd396a3141
--- /dev/null
+++ b/drivers/iio/accel/bmi088-accel.h
@@ -0,0 +1,25 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef BMI088_ACCEL_H
+#define BMI088_ACCEL_H
+
+#include <linux/pm.h>
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+struct device;
+
+enum bmi_device_type {
+	BOSCH_BMI085,
+	BOSCH_BMI088,
+	BOSCH_BMI090L,
+	BOSCH_UNKNOWN,
+};
+
+extern const struct regmap_config bmi088_regmap_conf;
+extern const struct dev_pm_ops bmi088_accel_pm_ops;
+
+int bmi088_accel_core_probe(struct device *dev, struct regmap *regmap, int irq,
+			    enum bmi_device_type type);
+void bmi088_accel_core_remove(struct device *dev);
+
+#endif /* BMI088_ACCEL_H */
diff --git a/drivers/iio/accel/cros_ec_accel_legacy.c b/drivers/iio/accel/cros_ec_accel_legacy.c
index 68e847c6255e..0f403342b1fc 100644
--- a/drivers/iio/accel/cros_ec_accel_legacy.c
+++ b/drivers/iio/accel/cros_ec_accel_legacy.c
@@ -33,6 +33,11 @@
  */
 #define ACCEL_LEGACY_NSCALE 9586168
 
+/*
+ * Sensor frequency is hard-coded to 10Hz.
+ */
+static const int cros_ec_legacy_sample_freq[] = { 10, 0 };
+
 static int cros_ec_accel_legacy_read_cmd(struct iio_dev *indio_dev,
 				  unsigned long scan_mask, s16 *data)
 {
@@ -96,6 +101,11 @@ static int cros_ec_accel_legacy_read(struct iio_dev *indio_dev,
 		*val = 0;
 		ret = IIO_VAL_INT;
 		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = cros_ec_legacy_sample_freq[0];
+		*val2 = cros_ec_legacy_sample_freq[1];
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
 	default:
 		ret = cros_ec_sensors_core_read(st, chan, val, val2,
 				mask);
@@ -120,9 +130,39 @@ static int cros_ec_accel_legacy_write(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
+/**
+ * cros_ec_accel_legacy_read_avail() - get available values
+ * @indio_dev:		pointer to state information for device
+ * @chan:	channel specification structure table
+ * @vals:	list of available values
+ * @type:	type of data returned
+ * @length:	number of data returned in the array
+ * @mask:	specifies which values to be requested
+ *
+ * Return:	an error code or IIO_AVAIL_LIST
+ */
+static int cros_ec_accel_legacy_read_avail(struct iio_dev *indio_dev,
+					   struct iio_chan_spec const *chan,
+					   const int **vals,
+					   int *type,
+					   int *length,
+					   long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*length = ARRAY_SIZE(cros_ec_legacy_sample_freq);
+		*vals = cros_ec_legacy_sample_freq;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+	}
+
+	return -EINVAL;
+}
+
 static const struct iio_info cros_ec_accel_legacy_info = {
 	.read_raw = &cros_ec_accel_legacy_read,
 	.write_raw = &cros_ec_accel_legacy_write,
+	.read_avail = &cros_ec_accel_legacy_read_avail,
 };
 
 /*
@@ -142,7 +182,11 @@ static const struct iio_info cros_ec_accel_legacy_info = {
 		.info_mask_separate =					\
 			BIT(IIO_CHAN_INFO_RAW) |			\
 			BIT(IIO_CHAN_INFO_CALIBBIAS),			\
-		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SCALE),	\
+		.info_mask_shared_by_all =				\
+			BIT(IIO_CHAN_INFO_SCALE) |			\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+		.info_mask_shared_by_all_available =			\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
 		.ext_info = cros_ec_sensors_ext_info,			\
 		.scan_type = {						\
 			.sign = 's',					\
@@ -170,7 +214,8 @@ static int cros_ec_accel_legacy_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+					cros_ec_sensors_capture);
 	if (ret)
 		return ret;
 
@@ -185,17 +230,12 @@ static int cros_ec_accel_legacy_probe(struct platform_device *pdev)
 	indio_dev->channels = cros_ec_accel_legacy_channels;
 	indio_dev->num_channels = ARRAY_SIZE(cros_ec_accel_legacy_channels);
 	/* The lid sensor needs to be presented inverted. */
-	if (state->loc == MOTIONSENSE_LOC_LID) {
+	if (!strcmp(indio_dev->label, "accel-display")) {
 		state->sign[CROS_EC_SENSOR_X] = -1;
 		state->sign[CROS_EC_SENSOR_Z] = -1;
 	}
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-			cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
-	return devm_iio_device_register(dev, indio_dev);
+	return cros_ec_sensors_core_register(dev, indio_dev, NULL);
 }
 
 static struct platform_driver cros_ec_accel_platform_driver = {
diff --git a/drivers/iio/accel/da280.c b/drivers/iio/accel/da280.c
index 227bea2d738b..04e9c5678964 100644
--- a/drivers/iio/accel/da280.c
+++ b/drivers/iio/accel/da280.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * IIO driver for the MiraMEMS DA280 3-axis accelerometer and
  * IIO driver for the MiraMEMS DA226 2-axis accelerometer
  *
@@ -100,6 +100,11 @@ static enum da280_chipset da280_match_acpi_device(struct device *dev)
 	return (enum da280_chipset) id->driver_data;
 }
 
+static void da280_disable(void *client)
+{
+	da280_enable(client, false);
+}
+
 static int da280_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -118,9 +123,7 @@ static int da280_probe(struct i2c_client *client,
 
 	data = iio_priv(indio_dev);
 	data->client = client;
-	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &da280_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = da280_channels;
@@ -143,25 +146,13 @@ static int da280_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "device_register failed\n");
-		da280_enable(client, false);
-	}
-
-	return ret;
-}
-
-static int da280_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
+	ret = devm_add_action_or_reset(&client->dev, da280_disable, client);
+	if (ret)
+		return ret;
 
-	return da280_enable(client, false);
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int da280_suspend(struct device *dev)
 {
 	return da280_enable(to_i2c_client(dev), false);
@@ -171,9 +162,8 @@ static int da280_resume(struct device *dev)
 {
 	return da280_enable(to_i2c_client(dev), true);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(da280_pm_ops, da280_suspend, da280_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(da280_pm_ops, da280_suspend, da280_resume);
 
 static const struct acpi_device_id da280_acpi_match[] = {
 	{"MIRAACC", da280},
@@ -192,10 +182,9 @@ static struct i2c_driver da280_driver = {
 	.driver = {
 		.name = "da280",
 		.acpi_match_table = ACPI_PTR(da280_acpi_match),
-		.pm = &da280_pm_ops,
+		.pm = pm_sleep_ptr(&da280_pm_ops),
 	},
 	.probe		= da280_probe,
-	.remove		= da280_remove,
 	.id_table	= da280_i2c_id,
 };
 
diff --git a/drivers/iio/accel/da311.c b/drivers/iio/accel/da311.c
index c20979249a48..ec4e29d260f7 100644
--- a/drivers/iio/accel/da311.c
+++ b/drivers/iio/accel/da311.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * IIO driver for the MiraMEMS DA311 3-axis accelerometer
  *
  * Copyright (c) 2016 Hans de Goede <hdegoede@redhat.com>
@@ -212,6 +212,11 @@ static const struct iio_info da311_info = {
 	.read_raw	= da311_read_raw,
 };
 
+static void da311_disable(void *client)
+{
+	da311_enable(client, false);
+}
+
 static int da311_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -229,9 +234,7 @@ static int da311_probe(struct i2c_client *client,
 
 	data = iio_priv(indio_dev);
 	data->client = client;
-	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &da311_info;
 	indio_dev->name = "da311";
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -246,25 +249,13 @@ static int da311_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "device_register failed\n");
-		da311_enable(client, false);
-	}
-
-	return ret;
-}
-
-static int da311_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
+	ret = devm_add_action_or_reset(&client->dev, da311_disable, client);
+	if (ret)
+		return ret;
 
-	return da311_enable(client, false);
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int da311_suspend(struct device *dev)
 {
 	return da311_enable(to_i2c_client(dev), false);
@@ -274,9 +265,8 @@ static int da311_resume(struct device *dev)
 {
 	return da311_enable(to_i2c_client(dev), true);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(da311_pm_ops, da311_suspend, da311_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(da311_pm_ops, da311_suspend, da311_resume);
 
 static const struct i2c_device_id da311_i2c_id[] = {
 	{"da311", 0},
@@ -287,10 +277,9 @@ MODULE_DEVICE_TABLE(i2c, da311_i2c_id);
 static struct i2c_driver da311_driver = {
 	.driver = {
 		.name = "da311",
-		.pm = &da311_pm_ops,
+		.pm = pm_sleep_ptr(&da311_pm_ops),
 	},
 	.probe		= da311_probe,
-	.remove		= da311_remove,
 	.id_table	= da311_i2c_id,
 };
 
diff --git a/drivers/iio/accel/dmard06.c b/drivers/iio/accel/dmard06.c
index 2bf210fa4ba6..4b69c8530f5e 100644
--- a/drivers/iio/accel/dmard06.c
+++ b/drivers/iio/accel/dmard06.c
@@ -6,6 +6,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 
@@ -160,7 +161,6 @@ static int dmard06_probe(struct i2c_client *client,
 	dmard06->chip_id = ret;
 
 	i2c_set_clientdata(client, indio_dev);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = DMARD06_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = dmard06_channels;
@@ -170,7 +170,6 @@ static int dmard06_probe(struct i2c_client *client,
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int dmard06_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -199,11 +198,8 @@ static int dmard06_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(dmard06_pm_ops, dmard06_suspend, dmard06_resume);
-#define DMARD06_PM_OPS (&dmard06_pm_ops)
-#else
-#define DMARD06_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(dmard06_pm_ops, dmard06_suspend,
+				dmard06_resume);
 
 static const struct i2c_device_id dmard06_id[] = {
 	{ "dmard05", 0 },
@@ -226,8 +222,8 @@ static struct i2c_driver dmard06_driver = {
 	.id_table = dmard06_id,
 	.driver = {
 		.name = DMARD06_DRV_NAME,
-		.of_match_table = of_match_ptr(dmard06_of_match),
-		.pm = DMARD06_PM_OPS,
+		.of_match_table = dmard06_of_match,
+		.pm = pm_sleep_ptr(&dmard06_pm_ops),
 	},
 };
 module_i2c_driver(dmard06_driver);
diff --git a/drivers/iio/accel/dmard09.c b/drivers/iio/accel/dmard09.c
index 2d666cd69b29..cb0246ca72f3 100644
--- a/drivers/iio/accel/dmard09.c
+++ b/drivers/iio/accel/dmard09.c
@@ -24,7 +24,7 @@
 #define DMARD09_AXIS_Y 1
 #define DMARD09_AXIS_Z 2
 #define DMARD09_AXIS_X_OFFSET ((DMARD09_AXIS_X + 1) * 2)
-#define DMARD09_AXIS_Y_OFFSET ((DMARD09_AXIS_Y + 1 )* 2)
+#define DMARD09_AXIS_Y_OFFSET ((DMARD09_AXIS_Y + 1) * 2)
 #define DMARD09_AXIS_Z_OFFSET ((DMARD09_AXIS_Z + 1) * 2)
 
 struct dmard09_data {
@@ -116,7 +116,6 @@ static int dmard09_probe(struct i2c_client *client,
 	}
 
 	i2c_set_clientdata(client, indio_dev);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = DMARD09_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = dmard09_channels;
@@ -127,7 +126,7 @@ static int dmard09_probe(struct i2c_client *client,
 }
 
 static const struct i2c_device_id dmard09_id[] = {
-	{ "dmard09", 0},
+	{ "dmard09", 0 },
 	{ },
 };
 
diff --git a/drivers/iio/accel/dmard10.c b/drivers/iio/accel/dmard10.c
index 71c852b8bb3e..8ac62ec0a04a 100644
--- a/drivers/iio/accel/dmard10.c
+++ b/drivers/iio/accel/dmard10.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * IIO driver for the 3-axis accelerometer Domintech ARD10.
  *
  * Copyright (c) 2016 Hans de Goede <hdegoede@redhat.com>
@@ -170,6 +170,11 @@ static const struct iio_info dmard10_info = {
 	.read_raw	= dmard10_read_raw,
 };
 
+static void dmard10_shutdown_cleanup(void *client)
+{
+	dmard10_shutdown(client);
+}
+
 static int dmard10_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -194,9 +199,7 @@ static int dmard10_probe(struct i2c_client *client,
 
 	data = iio_priv(indio_dev);
 	data->client = client;
-	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &dmard10_info;
 	indio_dev->name = "dmard10";
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -207,25 +210,14 @@ static int dmard10_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "device_register failed\n");
-		dmard10_shutdown(client);
-	}
-
-	return ret;
-}
-
-static int dmard10_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
+	ret = devm_add_action_or_reset(&client->dev, dmard10_shutdown_cleanup,
+				       client);
+	if (ret)
+		return ret;
 
-	return dmard10_shutdown(client);
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int dmard10_suspend(struct device *dev)
 {
 	return dmard10_shutdown(to_i2c_client(dev));
@@ -235,9 +227,9 @@ static int dmard10_resume(struct device *dev)
 {
 	return dmard10_reset(to_i2c_client(dev));
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(dmard10_pm_ops, dmard10_suspend, dmard10_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(dmard10_pm_ops, dmard10_suspend,
+				dmard10_resume);
 
 static const struct i2c_device_id dmard10_i2c_id[] = {
 	{"dmard10", 0},
@@ -248,10 +240,9 @@ MODULE_DEVICE_TABLE(i2c, dmard10_i2c_id);
 static struct i2c_driver dmard10_driver = {
 	.driver = {
 		.name = "dmard10",
-		.pm = &dmard10_pm_ops,
+		.pm = pm_sleep_ptr(&dmard10_pm_ops),
 	},
 	.probe		= dmard10_probe,
-	.remove		= dmard10_remove,
 	.id_table	= dmard10_i2c_id,
 };
 
diff --git a/drivers/iio/accel/fxls8962af-core.c b/drivers/iio/accel/fxls8962af-core.c
new file mode 100644
index 000000000000..8874d6d61725
--- /dev/null
+++ b/drivers/iio/accel/fxls8962af-core.c
@@ -0,0 +1,1312 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * NXP FXLS8962AF/FXLS8964AF Accelerometer Core Driver
+ *
+ * Copyright 2021 Connected Cars A/S
+ *
+ * Datasheet:
+ * https://www.nxp.com/docs/en/data-sheet/FXLS8962AF.pdf
+ * https://www.nxp.com/docs/en/data-sheet/FXLS8964AF.pdf
+ *
+ * Errata:
+ * https://www.nxp.com/docs/en/errata/ES_FXLS8962AF.pdf
+ */
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of_irq.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
+
+#include "fxls8962af.h"
+
+#define FXLS8962AF_INT_STATUS			0x00
+#define FXLS8962AF_INT_STATUS_SRC_BOOT		BIT(0)
+#define FXLS8962AF_INT_STATUS_SRC_SDCD_OT	BIT(4)
+#define FXLS8962AF_INT_STATUS_SRC_BUF		BIT(5)
+#define FXLS8962AF_INT_STATUS_SRC_DRDY		BIT(7)
+#define FXLS8962AF_TEMP_OUT			0x01
+#define FXLS8962AF_VECM_LSB			0x02
+#define FXLS8962AF_OUT_X_LSB			0x04
+#define FXLS8962AF_OUT_Y_LSB			0x06
+#define FXLS8962AF_OUT_Z_LSB			0x08
+#define FXLS8962AF_BUF_STATUS			0x0b
+#define FXLS8962AF_BUF_STATUS_BUF_CNT		GENMASK(5, 0)
+#define FXLS8962AF_BUF_STATUS_BUF_OVF		BIT(6)
+#define FXLS8962AF_BUF_STATUS_BUF_WMRK		BIT(7)
+#define FXLS8962AF_BUF_X_LSB			0x0c
+#define FXLS8962AF_BUF_Y_LSB			0x0e
+#define FXLS8962AF_BUF_Z_LSB			0x10
+
+#define FXLS8962AF_PROD_REV			0x12
+#define FXLS8962AF_WHO_AM_I			0x13
+
+#define FXLS8962AF_SYS_MODE			0x14
+#define FXLS8962AF_SENS_CONFIG1			0x15
+#define FXLS8962AF_SENS_CONFIG1_ACTIVE		BIT(0)
+#define FXLS8962AF_SENS_CONFIG1_RST		BIT(7)
+#define FXLS8962AF_SC1_FSR_MASK			GENMASK(2, 1)
+#define FXLS8962AF_SC1_FSR_PREP(x)		FIELD_PREP(FXLS8962AF_SC1_FSR_MASK, (x))
+#define FXLS8962AF_SC1_FSR_GET(x)		FIELD_GET(FXLS8962AF_SC1_FSR_MASK, (x))
+
+#define FXLS8962AF_SENS_CONFIG2			0x16
+#define FXLS8962AF_SENS_CONFIG3			0x17
+#define FXLS8962AF_SC3_WAKE_ODR_MASK		GENMASK(7, 4)
+#define FXLS8962AF_SC3_WAKE_ODR_PREP(x)		FIELD_PREP(FXLS8962AF_SC3_WAKE_ODR_MASK, (x))
+#define FXLS8962AF_SC3_WAKE_ODR_GET(x)		FIELD_GET(FXLS8962AF_SC3_WAKE_ODR_MASK, (x))
+#define FXLS8962AF_SENS_CONFIG4			0x18
+#define FXLS8962AF_SC4_INT_PP_OD_MASK		BIT(1)
+#define FXLS8962AF_SC4_INT_PP_OD_PREP(x)	FIELD_PREP(FXLS8962AF_SC4_INT_PP_OD_MASK, (x))
+#define FXLS8962AF_SC4_INT_POL_MASK		BIT(0)
+#define FXLS8962AF_SC4_INT_POL_PREP(x)		FIELD_PREP(FXLS8962AF_SC4_INT_POL_MASK, (x))
+#define FXLS8962AF_SENS_CONFIG5			0x19
+
+#define FXLS8962AF_WAKE_IDLE_LSB		0x1b
+#define FXLS8962AF_SLEEP_IDLE_LSB		0x1c
+#define FXLS8962AF_ASLP_COUNT_LSB		0x1e
+
+#define FXLS8962AF_INT_EN			0x20
+#define FXLS8962AF_INT_EN_SDCD_OT_EN		BIT(5)
+#define FXLS8962AF_INT_EN_BUF_EN		BIT(6)
+#define FXLS8962AF_INT_PIN_SEL			0x21
+#define FXLS8962AF_INT_PIN_SEL_MASK		GENMASK(7, 0)
+#define FXLS8962AF_INT_PIN_SEL_INT1		0x00
+#define FXLS8962AF_INT_PIN_SEL_INT2		GENMASK(7, 0)
+
+#define FXLS8962AF_OFF_X			0x22
+#define FXLS8962AF_OFF_Y			0x23
+#define FXLS8962AF_OFF_Z			0x24
+
+#define FXLS8962AF_BUF_CONFIG1			0x26
+#define FXLS8962AF_BC1_BUF_MODE_MASK		GENMASK(6, 5)
+#define FXLS8962AF_BC1_BUF_MODE_PREP(x)		FIELD_PREP(FXLS8962AF_BC1_BUF_MODE_MASK, (x))
+#define FXLS8962AF_BUF_CONFIG2			0x27
+#define FXLS8962AF_BUF_CONFIG2_BUF_WMRK		GENMASK(5, 0)
+
+#define FXLS8962AF_ORIENT_STATUS		0x28
+#define FXLS8962AF_ORIENT_CONFIG		0x29
+#define FXLS8962AF_ORIENT_DBCOUNT		0x2a
+#define FXLS8962AF_ORIENT_BF_ZCOMP		0x2b
+#define FXLS8962AF_ORIENT_THS_REG		0x2c
+
+#define FXLS8962AF_SDCD_INT_SRC1		0x2d
+#define FXLS8962AF_SDCD_INT_SRC1_X_OT		BIT(5)
+#define FXLS8962AF_SDCD_INT_SRC1_X_POL		BIT(4)
+#define FXLS8962AF_SDCD_INT_SRC1_Y_OT		BIT(3)
+#define FXLS8962AF_SDCD_INT_SRC1_Y_POL		BIT(2)
+#define FXLS8962AF_SDCD_INT_SRC1_Z_OT		BIT(1)
+#define FXLS8962AF_SDCD_INT_SRC1_Z_POL		BIT(0)
+#define FXLS8962AF_SDCD_INT_SRC2		0x2e
+#define FXLS8962AF_SDCD_CONFIG1			0x2f
+#define FXLS8962AF_SDCD_CONFIG1_Z_OT_EN		BIT(3)
+#define FXLS8962AF_SDCD_CONFIG1_Y_OT_EN		BIT(4)
+#define FXLS8962AF_SDCD_CONFIG1_X_OT_EN		BIT(5)
+#define FXLS8962AF_SDCD_CONFIG1_OT_ELE		BIT(7)
+#define FXLS8962AF_SDCD_CONFIG2			0x30
+#define FXLS8962AF_SDCD_CONFIG2_SDCD_EN		BIT(7)
+#define FXLS8962AF_SC2_REF_UPDM_AC		GENMASK(6, 5)
+#define FXLS8962AF_SDCD_OT_DBCNT		0x31
+#define FXLS8962AF_SDCD_WT_DBCNT		0x32
+#define FXLS8962AF_SDCD_LTHS_LSB		0x33
+#define FXLS8962AF_SDCD_UTHS_LSB		0x35
+
+#define FXLS8962AF_SELF_TEST_CONFIG1		0x37
+#define FXLS8962AF_SELF_TEST_CONFIG2		0x38
+
+#define FXLS8962AF_MAX_REG			0x38
+
+#define FXLS8962AF_DEVICE_ID			0x62
+#define FXLS8964AF_DEVICE_ID			0x84
+
+/* Raw temp channel offset */
+#define FXLS8962AF_TEMP_CENTER_VAL		25
+
+#define FXLS8962AF_AUTO_SUSPEND_DELAY_MS	2000
+
+#define FXLS8962AF_FIFO_LENGTH			32
+#define FXLS8962AF_SCALE_TABLE_LEN		4
+#define FXLS8962AF_SAMP_FREQ_TABLE_LEN		13
+
+static const int fxls8962af_scale_table[FXLS8962AF_SCALE_TABLE_LEN][2] = {
+	{0, IIO_G_TO_M_S_2(980000)},
+	{0, IIO_G_TO_M_S_2(1950000)},
+	{0, IIO_G_TO_M_S_2(3910000)},
+	{0, IIO_G_TO_M_S_2(7810000)},
+};
+
+static const int fxls8962af_samp_freq_table[FXLS8962AF_SAMP_FREQ_TABLE_LEN][2] = {
+	{3200, 0}, {1600, 0}, {800, 0}, {400, 0}, {200, 0}, {100, 0},
+	{50, 0}, {25, 0}, {12, 500000}, {6, 250000}, {3, 125000},
+	{1, 563000}, {0, 781000},
+};
+
+struct fxls8962af_chip_info {
+	const char *name;
+	const struct iio_chan_spec *channels;
+	int num_channels;
+	u8 chip_id;
+};
+
+struct fxls8962af_data {
+	struct regmap *regmap;
+	const struct fxls8962af_chip_info *chip_info;
+	struct regulator *vdd_reg;
+	struct {
+		__le16 channels[3];
+		s64 ts __aligned(8);
+	} scan;
+	int64_t timestamp, old_timestamp;	/* Only used in hw fifo mode. */
+	struct iio_mount_matrix orientation;
+	int irq;
+	u8 watermark;
+	u8 enable_event;
+	u16 lower_thres;
+	u16 upper_thres;
+};
+
+const struct regmap_config fxls8962af_i2c_regmap_conf = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = FXLS8962AF_MAX_REG,
+};
+EXPORT_SYMBOL_NS_GPL(fxls8962af_i2c_regmap_conf, IIO_FXLS8962AF);
+
+const struct regmap_config fxls8962af_spi_regmap_conf = {
+	.reg_bits = 8,
+	.pad_bits = 8,
+	.val_bits = 8,
+	.max_register = FXLS8962AF_MAX_REG,
+};
+EXPORT_SYMBOL_NS_GPL(fxls8962af_spi_regmap_conf, IIO_FXLS8962AF);
+
+enum {
+	fxls8962af_idx_x,
+	fxls8962af_idx_y,
+	fxls8962af_idx_z,
+	fxls8962af_idx_ts,
+};
+
+enum fxls8962af_int_pin {
+	FXLS8962AF_PIN_INT1,
+	FXLS8962AF_PIN_INT2,
+};
+
+static int fxls8962af_power_on(struct fxls8962af_data *data)
+{
+	struct device *dev = regmap_get_device(data->regmap);
+	int ret;
+
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret)
+		dev_err(dev, "failed to power on\n");
+
+	return ret;
+}
+
+static int fxls8962af_power_off(struct fxls8962af_data *data)
+{
+	struct device *dev = regmap_get_device(data->regmap);
+	int ret;
+
+	pm_runtime_mark_last_busy(dev);
+	ret = pm_runtime_put_autosuspend(dev);
+	if (ret)
+		dev_err(dev, "failed to power off\n");
+
+	return ret;
+}
+
+static int fxls8962af_standby(struct fxls8962af_data *data)
+{
+	return regmap_update_bits(data->regmap, FXLS8962AF_SENS_CONFIG1,
+				  FXLS8962AF_SENS_CONFIG1_ACTIVE, 0);
+}
+
+static int fxls8962af_active(struct fxls8962af_data *data)
+{
+	return regmap_update_bits(data->regmap, FXLS8962AF_SENS_CONFIG1,
+				  FXLS8962AF_SENS_CONFIG1_ACTIVE, 1);
+}
+
+static int fxls8962af_is_active(struct fxls8962af_data *data)
+{
+	unsigned int reg;
+	int ret;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_SENS_CONFIG1, &reg);
+	if (ret)
+		return ret;
+
+	return reg & FXLS8962AF_SENS_CONFIG1_ACTIVE;
+}
+
+static int fxls8962af_get_out(struct fxls8962af_data *data,
+			      struct iio_chan_spec const *chan, int *val)
+{
+	struct device *dev = regmap_get_device(data->regmap);
+	__le16 raw_val;
+	int is_active;
+	int ret;
+
+	is_active = fxls8962af_is_active(data);
+	if (!is_active) {
+		ret = fxls8962af_power_on(data);
+		if (ret)
+			return ret;
+	}
+
+	ret = regmap_bulk_read(data->regmap, chan->address,
+			       &raw_val, sizeof(data->lower_thres));
+
+	if (!is_active)
+		fxls8962af_power_off(data);
+
+	if (ret) {
+		dev_err(dev, "failed to get out reg 0x%lx\n", chan->address);
+		return ret;
+	}
+
+	*val = sign_extend32(le16_to_cpu(raw_val),
+			     chan->scan_type.realbits - 1);
+
+	return IIO_VAL_INT;
+}
+
+static int fxls8962af_read_avail(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan,
+				 const int **vals, int *type, int *length,
+				 long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*type = IIO_VAL_INT_PLUS_NANO;
+		*vals = (int *)fxls8962af_scale_table;
+		*length = ARRAY_SIZE(fxls8962af_scale_table) * 2;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*vals = (int *)fxls8962af_samp_freq_table;
+		*length = ARRAY_SIZE(fxls8962af_samp_freq_table) * 2;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int fxls8962af_write_raw_get_fmt(struct iio_dev *indio_dev,
+					struct iio_chan_spec const *chan,
+					long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return IIO_VAL_INT_PLUS_NANO;
+	}
+}
+
+static int fxls8962af_update_config(struct fxls8962af_data *data, u8 reg,
+				    u8 mask, u8 val)
+{
+	int ret;
+	int is_active;
+
+	is_active = fxls8962af_is_active(data);
+	if (is_active) {
+		ret = fxls8962af_standby(data);
+		if (ret)
+			return ret;
+	}
+
+	ret = regmap_update_bits(data->regmap, reg, mask, val);
+	if (ret)
+		return ret;
+
+	if (is_active) {
+		ret = fxls8962af_active(data);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int fxls8962af_set_full_scale(struct fxls8962af_data *data, u32 scale)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(fxls8962af_scale_table); i++)
+		if (scale == fxls8962af_scale_table[i][1])
+			break;
+
+	if (i == ARRAY_SIZE(fxls8962af_scale_table))
+		return -EINVAL;
+
+	return fxls8962af_update_config(data, FXLS8962AF_SENS_CONFIG1,
+					FXLS8962AF_SC1_FSR_MASK,
+					FXLS8962AF_SC1_FSR_PREP(i));
+}
+
+static unsigned int fxls8962af_read_full_scale(struct fxls8962af_data *data,
+					       int *val)
+{
+	int ret;
+	unsigned int reg;
+	u8 range_idx;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_SENS_CONFIG1, &reg);
+	if (ret)
+		return ret;
+
+	range_idx = FXLS8962AF_SC1_FSR_GET(reg);
+
+	*val = fxls8962af_scale_table[range_idx][1];
+
+	return IIO_VAL_INT_PLUS_NANO;
+}
+
+static int fxls8962af_set_samp_freq(struct fxls8962af_data *data, u32 val,
+				    u32 val2)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(fxls8962af_samp_freq_table); i++)
+		if (val == fxls8962af_samp_freq_table[i][0] &&
+		    val2 == fxls8962af_samp_freq_table[i][1])
+			break;
+
+	if (i == ARRAY_SIZE(fxls8962af_samp_freq_table))
+		return -EINVAL;
+
+	return fxls8962af_update_config(data, FXLS8962AF_SENS_CONFIG3,
+					FXLS8962AF_SC3_WAKE_ODR_MASK,
+					FXLS8962AF_SC3_WAKE_ODR_PREP(i));
+}
+
+static unsigned int fxls8962af_read_samp_freq(struct fxls8962af_data *data,
+					      int *val, int *val2)
+{
+	int ret;
+	unsigned int reg;
+	u8 range_idx;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_SENS_CONFIG3, &reg);
+	if (ret)
+		return ret;
+
+	range_idx = FXLS8962AF_SC3_WAKE_ODR_GET(reg);
+
+	*val = fxls8962af_samp_freq_table[range_idx][0];
+	*val2 = fxls8962af_samp_freq_table[range_idx][1];
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int fxls8962af_read_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val, int *val2, long mask)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_TEMP:
+		case IIO_ACCEL:
+			return fxls8962af_get_out(data, chan, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		if (chan->type != IIO_TEMP)
+			return -EINVAL;
+
+		*val = FXLS8962AF_TEMP_CENTER_VAL;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 0;
+		return fxls8962af_read_full_scale(data, val2);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return fxls8962af_read_samp_freq(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int fxls8962af_write_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int val, int val2, long mask)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		if (val != 0)
+			return -EINVAL;
+
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = fxls8962af_set_full_scale(data, val2);
+
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = fxls8962af_set_samp_freq(data, val, val2);
+
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int fxls8962af_event_setup(struct fxls8962af_data *data, int state)
+{
+	/* Enable wakeup interrupt */
+	int mask = FXLS8962AF_INT_EN_SDCD_OT_EN;
+	int value = state ? mask : 0;
+
+	return regmap_update_bits(data->regmap, FXLS8962AF_INT_EN, mask, value);
+}
+
+static int fxls8962af_set_watermark(struct iio_dev *indio_dev, unsigned val)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+
+	if (val > FXLS8962AF_FIFO_LENGTH)
+		val = FXLS8962AF_FIFO_LENGTH;
+
+	data->watermark = val;
+
+	return 0;
+}
+
+static int __fxls8962af_set_thresholds(struct fxls8962af_data *data,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_direction dir,
+				       int val)
+{
+	switch (dir) {
+	case IIO_EV_DIR_FALLING:
+		data->lower_thres = val;
+		return regmap_bulk_write(data->regmap, FXLS8962AF_SDCD_LTHS_LSB,
+				&data->lower_thres, sizeof(data->lower_thres));
+	case IIO_EV_DIR_RISING:
+		data->upper_thres = val;
+		return regmap_bulk_write(data->regmap, FXLS8962AF_SDCD_UTHS_LSB,
+				&data->upper_thres, sizeof(data->upper_thres));
+	default:
+		return -EINVAL;
+	}
+}
+
+static int fxls8962af_read_event(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir,
+				 enum iio_event_info info,
+				 int *val, int *val2)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	int ret;
+
+	if (type != IIO_EV_TYPE_THRESH)
+		return -EINVAL;
+
+	switch (dir) {
+	case IIO_EV_DIR_FALLING:
+		ret = regmap_bulk_read(data->regmap, FXLS8962AF_SDCD_LTHS_LSB,
+				       &data->lower_thres, sizeof(data->lower_thres));
+		if (ret)
+			return ret;
+
+		*val = sign_extend32(data->lower_thres, chan->scan_type.realbits - 1);
+		return IIO_VAL_INT;
+	case IIO_EV_DIR_RISING:
+		ret = regmap_bulk_read(data->regmap, FXLS8962AF_SDCD_UTHS_LSB,
+				       &data->upper_thres, sizeof(data->upper_thres));
+		if (ret)
+			return ret;
+
+		*val = sign_extend32(data->upper_thres, chan->scan_type.realbits - 1);
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int fxls8962af_write_event(struct iio_dev *indio_dev,
+				  const struct iio_chan_spec *chan,
+				  enum iio_event_type type,
+				  enum iio_event_direction dir,
+				  enum iio_event_info info,
+				  int val, int val2)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	int ret, val_masked;
+
+	if (type != IIO_EV_TYPE_THRESH)
+		return -EINVAL;
+
+	if (val < -2048 || val > 2047)
+		return -EINVAL;
+
+	if (data->enable_event)
+		return -EBUSY;
+
+	val_masked = val & GENMASK(11, 0);
+	if (fxls8962af_is_active(data)) {
+		ret = fxls8962af_standby(data);
+		if (ret)
+			return ret;
+
+		ret = __fxls8962af_set_thresholds(data, chan, dir, val_masked);
+		if (ret)
+			return ret;
+
+		return fxls8962af_active(data);
+	} else {
+		return __fxls8962af_set_thresholds(data, chan, dir, val_masked);
+	}
+}
+
+static int
+fxls8962af_read_event_config(struct iio_dev *indio_dev,
+			     const struct iio_chan_spec *chan,
+			     enum iio_event_type type,
+			     enum iio_event_direction dir)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+
+	if (type != IIO_EV_TYPE_THRESH)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		return !!(FXLS8962AF_SDCD_CONFIG1_X_OT_EN & data->enable_event);
+	case IIO_MOD_Y:
+		return !!(FXLS8962AF_SDCD_CONFIG1_Y_OT_EN & data->enable_event);
+	case IIO_MOD_Z:
+		return !!(FXLS8962AF_SDCD_CONFIG1_Z_OT_EN & data->enable_event);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int
+fxls8962af_write_event_config(struct iio_dev *indio_dev,
+			      const struct iio_chan_spec *chan,
+			      enum iio_event_type type,
+			      enum iio_event_direction dir, int state)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	u8 enable_event, enable_bits;
+	int ret, value;
+
+	if (type != IIO_EV_TYPE_THRESH)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		enable_bits = FXLS8962AF_SDCD_CONFIG1_X_OT_EN;
+		break;
+	case IIO_MOD_Y:
+		enable_bits = FXLS8962AF_SDCD_CONFIG1_Y_OT_EN;
+		break;
+	case IIO_MOD_Z:
+		enable_bits = FXLS8962AF_SDCD_CONFIG1_Z_OT_EN;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (state)
+		enable_event = data->enable_event | enable_bits;
+	else
+		enable_event = data->enable_event & ~enable_bits;
+
+	if (data->enable_event == enable_event)
+		return 0;
+
+	ret = fxls8962af_standby(data);
+	if (ret)
+		return ret;
+
+	/* Enable events */
+	value = enable_event | FXLS8962AF_SDCD_CONFIG1_OT_ELE;
+	ret = regmap_write(data->regmap, FXLS8962AF_SDCD_CONFIG1, value);
+	if (ret)
+		return ret;
+
+	/*
+	 * Enable update of SDCD_REF_X/Y/Z values with the current decimated and
+	 * trimmed X/Y/Z acceleration input data. This allows for acceleration
+	 * slope detection with Data(n) to Data(n–1) always used as the input
+	 * to the window comparator.
+	 */
+	value = enable_event ?
+		FXLS8962AF_SDCD_CONFIG2_SDCD_EN | FXLS8962AF_SC2_REF_UPDM_AC :
+		0x00;
+	ret = regmap_write(data->regmap, FXLS8962AF_SDCD_CONFIG2, value);
+	if (ret)
+		return ret;
+
+	ret = fxls8962af_event_setup(data, state);
+	if (ret)
+		return ret;
+
+	data->enable_event = enable_event;
+
+	if (data->enable_event) {
+		fxls8962af_active(data);
+		ret = fxls8962af_power_on(data);
+	} else {
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		/* Not in buffered mode so disable power */
+		ret = fxls8962af_power_off(data);
+
+		iio_device_release_direct_mode(indio_dev);
+	}
+
+	return ret;
+}
+
+static const struct iio_event_spec fxls8962af_event[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
+#define FXLS8962AF_CHANNEL(axis, reg, idx) { \
+	.type = IIO_ACCEL, \
+	.address = reg, \
+	.modified = 1, \
+	.channel2 = IIO_MOD_##axis, \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+				    BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE) | \
+					      BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.scan_index = idx, \
+	.scan_type = { \
+		.sign = 's', \
+		.realbits = 12, \
+		.storagebits = 16, \
+		.shift = 4, \
+		.endianness = IIO_BE, \
+	}, \
+	.event_spec = fxls8962af_event, \
+	.num_event_specs = ARRAY_SIZE(fxls8962af_event), \
+}
+
+#define FXLS8962AF_TEMP_CHANNEL { \
+	.type = IIO_TEMP, \
+	.address = FXLS8962AF_TEMP_OUT, \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			      BIT(IIO_CHAN_INFO_OFFSET),\
+	.scan_index = -1, \
+	.scan_type = { \
+		.realbits = 8, \
+		.storagebits = 8, \
+	}, \
+}
+
+static const struct iio_chan_spec fxls8962af_channels[] = {
+	FXLS8962AF_CHANNEL(X, FXLS8962AF_OUT_X_LSB, fxls8962af_idx_x),
+	FXLS8962AF_CHANNEL(Y, FXLS8962AF_OUT_Y_LSB, fxls8962af_idx_y),
+	FXLS8962AF_CHANNEL(Z, FXLS8962AF_OUT_Z_LSB, fxls8962af_idx_z),
+	IIO_CHAN_SOFT_TIMESTAMP(fxls8962af_idx_ts),
+	FXLS8962AF_TEMP_CHANNEL,
+};
+
+static const struct fxls8962af_chip_info fxls_chip_info_table[] = {
+	[fxls8962af] = {
+		.chip_id = FXLS8962AF_DEVICE_ID,
+		.name = "fxls8962af",
+		.channels = fxls8962af_channels,
+		.num_channels = ARRAY_SIZE(fxls8962af_channels),
+	},
+	[fxls8964af] = {
+		.chip_id = FXLS8964AF_DEVICE_ID,
+		.name = "fxls8964af",
+		.channels = fxls8962af_channels,
+		.num_channels = ARRAY_SIZE(fxls8962af_channels),
+	},
+};
+
+static const struct iio_info fxls8962af_info = {
+	.read_raw = &fxls8962af_read_raw,
+	.write_raw = &fxls8962af_write_raw,
+	.write_raw_get_fmt = fxls8962af_write_raw_get_fmt,
+	.read_event_value = fxls8962af_read_event,
+	.write_event_value = fxls8962af_write_event,
+	.read_event_config = fxls8962af_read_event_config,
+	.write_event_config = fxls8962af_write_event_config,
+	.read_avail = fxls8962af_read_avail,
+	.hwfifo_set_watermark = fxls8962af_set_watermark,
+};
+
+static int fxls8962af_reset(struct fxls8962af_data *data)
+{
+	struct device *dev = regmap_get_device(data->regmap);
+	unsigned int reg;
+	int ret;
+
+	ret = regmap_update_bits(data->regmap, FXLS8962AF_SENS_CONFIG1,
+				 FXLS8962AF_SENS_CONFIG1_RST,
+				 FXLS8962AF_SENS_CONFIG1_RST);
+	if (ret)
+		return ret;
+
+	/* TBOOT1, TBOOT2, specifies we have to wait between 1 - 17.7ms */
+	ret = regmap_read_poll_timeout(data->regmap, FXLS8962AF_INT_STATUS, reg,
+				       (reg & FXLS8962AF_INT_STATUS_SRC_BOOT),
+				       1000, 18000);
+	if (ret == -ETIMEDOUT)
+		dev_err(dev, "reset timeout, int_status = 0x%x\n", reg);
+
+	return ret;
+}
+
+static int __fxls8962af_fifo_set_mode(struct fxls8962af_data *data, bool onoff)
+{
+	int ret;
+
+	/* Enable watermark at max fifo size */
+	ret = regmap_update_bits(data->regmap, FXLS8962AF_BUF_CONFIG2,
+				 FXLS8962AF_BUF_CONFIG2_BUF_WMRK,
+				 data->watermark);
+	if (ret)
+		return ret;
+
+	return regmap_update_bits(data->regmap, FXLS8962AF_BUF_CONFIG1,
+				  FXLS8962AF_BC1_BUF_MODE_MASK,
+				  FXLS8962AF_BC1_BUF_MODE_PREP(onoff));
+}
+
+static int fxls8962af_buffer_preenable(struct iio_dev *indio_dev)
+{
+	return fxls8962af_power_on(iio_priv(indio_dev));
+}
+
+static int fxls8962af_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	int ret;
+
+	fxls8962af_standby(data);
+
+	/* Enable buffer interrupt */
+	ret = regmap_update_bits(data->regmap, FXLS8962AF_INT_EN,
+				 FXLS8962AF_INT_EN_BUF_EN,
+				 FXLS8962AF_INT_EN_BUF_EN);
+	if (ret)
+		return ret;
+
+	ret = __fxls8962af_fifo_set_mode(data, true);
+
+	fxls8962af_active(data);
+
+	return ret;
+}
+
+static int fxls8962af_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	int ret;
+
+	fxls8962af_standby(data);
+
+	/* Disable buffer interrupt */
+	ret = regmap_update_bits(data->regmap, FXLS8962AF_INT_EN,
+				 FXLS8962AF_INT_EN_BUF_EN, 0);
+	if (ret)
+		return ret;
+
+	ret = __fxls8962af_fifo_set_mode(data, false);
+
+	if (data->enable_event)
+		fxls8962af_active(data);
+
+	return ret;
+}
+
+static int fxls8962af_buffer_postdisable(struct iio_dev *indio_dev)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+
+	if (!data->enable_event)
+		fxls8962af_power_off(data);
+
+	return 0;
+}
+
+static const struct iio_buffer_setup_ops fxls8962af_buffer_ops = {
+	.preenable = fxls8962af_buffer_preenable,
+	.postenable = fxls8962af_buffer_postenable,
+	.predisable = fxls8962af_buffer_predisable,
+	.postdisable = fxls8962af_buffer_postdisable,
+};
+
+static int fxls8962af_i2c_raw_read_errata3(struct fxls8962af_data *data,
+					   u16 *buffer, int samples,
+					   int sample_length)
+{
+	int i, ret;
+
+	for (i = 0; i < samples; i++) {
+		ret = regmap_raw_read(data->regmap, FXLS8962AF_BUF_X_LSB,
+				      &buffer[i * 3], sample_length);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int fxls8962af_fifo_transfer(struct fxls8962af_data *data,
+				    u16 *buffer, int samples)
+{
+	struct device *dev = regmap_get_device(data->regmap);
+	int sample_length = 3 * sizeof(*buffer);
+	int total_length = samples * sample_length;
+	int ret;
+
+	if (i2c_verify_client(dev))
+		/*
+		 * Due to errata bug:
+		 * E3: FIFO burst read operation error using I2C interface
+		 * We have to avoid burst reads on I2C..
+		 */
+		ret = fxls8962af_i2c_raw_read_errata3(data, buffer, samples,
+						      sample_length);
+	else
+		ret = regmap_raw_read(data->regmap, FXLS8962AF_BUF_X_LSB, buffer,
+				      total_length);
+
+	if (ret)
+		dev_err(dev, "Error transferring data from fifo: %d\n", ret);
+
+	return ret;
+}
+
+static int fxls8962af_fifo_flush(struct iio_dev *indio_dev)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(data->regmap);
+	u16 buffer[FXLS8962AF_FIFO_LENGTH * 3];
+	uint64_t sample_period;
+	unsigned int reg;
+	int64_t tstamp;
+	int ret, i;
+	u8 count;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_BUF_STATUS, &reg);
+	if (ret)
+		return ret;
+
+	if (reg & FXLS8962AF_BUF_STATUS_BUF_OVF) {
+		dev_err(dev, "Buffer overflow");
+		return -EOVERFLOW;
+	}
+
+	count = reg & FXLS8962AF_BUF_STATUS_BUF_CNT;
+	if (!count)
+		return 0;
+
+	data->old_timestamp = data->timestamp;
+	data->timestamp = iio_get_time_ns(indio_dev);
+
+	/*
+	 * Approximate timestamps for each of the sample based on the sampling,
+	 * frequency, timestamp for last sample and number of samples.
+	 */
+	sample_period = (data->timestamp - data->old_timestamp);
+	do_div(sample_period, count);
+	tstamp = data->timestamp - (count - 1) * sample_period;
+
+	ret = fxls8962af_fifo_transfer(data, buffer, count);
+	if (ret)
+		return ret;
+
+	/* Demux hw FIFO into kfifo. */
+	for (i = 0; i < count; i++) {
+		int j, bit;
+
+		j = 0;
+		for_each_set_bit(bit, indio_dev->active_scan_mask,
+				 indio_dev->masklength) {
+			memcpy(&data->scan.channels[j++], &buffer[i * 3 + bit],
+			       sizeof(data->scan.channels[0]));
+		}
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
+						   tstamp);
+
+		tstamp += sample_period;
+	}
+
+	return count;
+}
+
+static int fxls8962af_event_interrupt(struct iio_dev *indio_dev)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	s64 ts = iio_get_time_ns(indio_dev);
+	unsigned int reg;
+	u64 ev_code;
+	int ret;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_SDCD_INT_SRC1, &reg);
+	if (ret)
+		return ret;
+
+	if (reg & FXLS8962AF_SDCD_INT_SRC1_X_OT) {
+		ev_code = reg & FXLS8962AF_SDCD_INT_SRC1_X_POL ?
+			IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X,
+					IIO_EV_TYPE_THRESH, ev_code), ts);
+	}
+
+	if (reg & FXLS8962AF_SDCD_INT_SRC1_Y_OT) {
+		ev_code = reg & FXLS8962AF_SDCD_INT_SRC1_Y_POL ?
+			IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X,
+					IIO_EV_TYPE_THRESH, ev_code), ts);
+	}
+
+	if (reg & FXLS8962AF_SDCD_INT_SRC1_Z_OT) {
+		ev_code = reg & FXLS8962AF_SDCD_INT_SRC1_Z_POL ?
+			IIO_EV_DIR_RISING : IIO_EV_DIR_FALLING;
+		iio_push_event(indio_dev,
+				IIO_MOD_EVENT_CODE(IIO_ACCEL, 0, IIO_MOD_X,
+					IIO_EV_TYPE_THRESH, ev_code), ts);
+	}
+
+	return 0;
+}
+
+static irqreturn_t fxls8962af_interrupt(int irq, void *p)
+{
+	struct iio_dev *indio_dev = p;
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	unsigned int reg;
+	int ret;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_INT_STATUS, &reg);
+	if (ret)
+		return IRQ_NONE;
+
+	if (reg & FXLS8962AF_INT_STATUS_SRC_BUF) {
+		ret = fxls8962af_fifo_flush(indio_dev);
+		if (ret < 0)
+			return IRQ_NONE;
+
+		return IRQ_HANDLED;
+	}
+
+	if (reg & FXLS8962AF_INT_STATUS_SRC_SDCD_OT) {
+		ret = fxls8962af_event_interrupt(indio_dev);
+		if (ret < 0)
+			return IRQ_NONE;
+
+		return IRQ_HANDLED;
+	}
+
+	return IRQ_NONE;
+}
+
+static void fxls8962af_regulator_disable(void *data_ptr)
+{
+	struct fxls8962af_data *data = data_ptr;
+
+	regulator_disable(data->vdd_reg);
+}
+
+static void fxls8962af_pm_disable(void *dev_ptr)
+{
+	struct device *dev = dev_ptr;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+
+	pm_runtime_disable(dev);
+	pm_runtime_set_suspended(dev);
+	pm_runtime_put_noidle(dev);
+
+	fxls8962af_standby(iio_priv(indio_dev));
+}
+
+static void fxls8962af_get_irq(struct device_node *of_node,
+			       enum fxls8962af_int_pin *pin)
+{
+	int irq;
+
+	irq = of_irq_get_byname(of_node, "INT2");
+	if (irq > 0) {
+		*pin = FXLS8962AF_PIN_INT2;
+		return;
+	}
+
+	*pin = FXLS8962AF_PIN_INT1;
+}
+
+static int fxls8962af_irq_setup(struct iio_dev *indio_dev, int irq)
+{
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(data->regmap);
+	unsigned long irq_type;
+	bool irq_active_high;
+	enum fxls8962af_int_pin int_pin;
+	u8 int_pin_sel;
+	int ret;
+
+	fxls8962af_get_irq(dev->of_node, &int_pin);
+	switch (int_pin) {
+	case FXLS8962AF_PIN_INT1:
+		int_pin_sel = FXLS8962AF_INT_PIN_SEL_INT1;
+		break;
+	case FXLS8962AF_PIN_INT2:
+		int_pin_sel = FXLS8962AF_INT_PIN_SEL_INT2;
+		break;
+	default:
+		dev_err(dev, "unsupported int pin selected\n");
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(data->regmap, FXLS8962AF_INT_PIN_SEL,
+				 FXLS8962AF_INT_PIN_SEL_MASK, int_pin_sel);
+	if (ret)
+		return ret;
+
+	irq_type = irqd_get_trigger_type(irq_get_irq_data(irq));
+
+	switch (irq_type) {
+	case IRQF_TRIGGER_HIGH:
+	case IRQF_TRIGGER_RISING:
+		irq_active_high = true;
+		break;
+	case IRQF_TRIGGER_LOW:
+	case IRQF_TRIGGER_FALLING:
+		irq_active_high = false;
+		break;
+	default:
+		dev_info(dev, "mode %lx unsupported\n", irq_type);
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(data->regmap, FXLS8962AF_SENS_CONFIG4,
+				 FXLS8962AF_SC4_INT_POL_MASK,
+				 FXLS8962AF_SC4_INT_POL_PREP(irq_active_high));
+	if (ret)
+		return ret;
+
+	if (device_property_read_bool(dev, "drive-open-drain")) {
+		ret = regmap_update_bits(data->regmap, FXLS8962AF_SENS_CONFIG4,
+					 FXLS8962AF_SC4_INT_PP_OD_MASK,
+					 FXLS8962AF_SC4_INT_PP_OD_PREP(1));
+		if (ret)
+			return ret;
+
+		irq_type |= IRQF_SHARED;
+	}
+
+	return devm_request_threaded_irq(dev,
+					 irq,
+					 NULL, fxls8962af_interrupt,
+					 irq_type | IRQF_ONESHOT,
+					 indio_dev->name, indio_dev);
+}
+
+int fxls8962af_core_probe(struct device *dev, struct regmap *regmap, int irq)
+{
+	struct fxls8962af_data *data;
+	struct iio_dev *indio_dev;
+	unsigned int reg;
+	int ret, i;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	dev_set_drvdata(dev, indio_dev);
+	data->regmap = regmap;
+	data->irq = irq;
+
+	ret = iio_read_mount_matrix(dev, &data->orientation);
+	if (ret)
+		return ret;
+
+	data->vdd_reg = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(data->vdd_reg))
+		return dev_err_probe(dev, PTR_ERR(data->vdd_reg),
+				     "Failed to get vdd regulator\n");
+
+	ret = regulator_enable(data->vdd_reg);
+	if (ret) {
+		dev_err(dev, "Failed to enable vdd regulator: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(dev, fxls8962af_regulator_disable, data);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(data->regmap, FXLS8962AF_WHO_AM_I, &reg);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < ARRAY_SIZE(fxls_chip_info_table); i++) {
+		if (fxls_chip_info_table[i].chip_id == reg) {
+			data->chip_info = &fxls_chip_info_table[i];
+			break;
+		}
+	}
+	if (i == ARRAY_SIZE(fxls_chip_info_table)) {
+		dev_err(dev, "failed to match device in table\n");
+		return -ENXIO;
+	}
+
+	indio_dev->channels = data->chip_info->channels;
+	indio_dev->num_channels = data->chip_info->num_channels;
+	indio_dev->name = data->chip_info->name;
+	indio_dev->info = &fxls8962af_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = fxls8962af_reset(data);
+	if (ret)
+		return ret;
+
+	if (irq) {
+		ret = fxls8962af_irq_setup(indio_dev, irq);
+		if (ret)
+			return ret;
+
+		ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
+						  &fxls8962af_buffer_ops);
+		if (ret)
+			return ret;
+	}
+
+	ret = pm_runtime_set_active(dev);
+	if (ret)
+		return ret;
+
+	pm_runtime_enable(dev);
+	pm_runtime_set_autosuspend_delay(dev, FXLS8962AF_AUTO_SUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(dev);
+
+	ret = devm_add_action_or_reset(dev, fxls8962af_pm_disable, dev);
+	if (ret)
+		return ret;
+
+	if (device_property_read_bool(dev, "wakeup-source"))
+		device_init_wakeup(dev, true);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_NS_GPL(fxls8962af_core_probe, IIO_FXLS8962AF);
+
+static int __maybe_unused fxls8962af_runtime_suspend(struct device *dev)
+{
+	struct fxls8962af_data *data = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	ret = fxls8962af_standby(data);
+	if (ret) {
+		dev_err(dev, "powering off device failed\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int __maybe_unused fxls8962af_runtime_resume(struct device *dev)
+{
+	struct fxls8962af_data *data = iio_priv(dev_get_drvdata(dev));
+
+	return fxls8962af_active(data);
+}
+
+static int __maybe_unused fxls8962af_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+
+	if (device_may_wakeup(dev) && data->enable_event) {
+		enable_irq_wake(data->irq);
+
+		/*
+		 * Disable buffer, as the buffer is so small the device will wake
+		 * almost immediately.
+		 */
+		if (iio_buffer_enabled(indio_dev))
+			fxls8962af_buffer_predisable(indio_dev);
+	} else {
+		fxls8962af_runtime_suspend(dev);
+	}
+
+	return 0;
+}
+
+static int __maybe_unused fxls8962af_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct fxls8962af_data *data = iio_priv(indio_dev);
+
+	if (device_may_wakeup(dev) && data->enable_event) {
+		disable_irq_wake(data->irq);
+
+		if (iio_buffer_enabled(indio_dev))
+			fxls8962af_buffer_postenable(indio_dev);
+	} else {
+		fxls8962af_runtime_resume(dev);
+	}
+
+	return 0;
+}
+
+const struct dev_pm_ops fxls8962af_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(fxls8962af_suspend, fxls8962af_resume)
+	SET_RUNTIME_PM_OPS(fxls8962af_runtime_suspend,
+			   fxls8962af_runtime_resume, NULL)
+};
+EXPORT_SYMBOL_NS_GPL(fxls8962af_pm_ops, IIO_FXLS8962AF);
+
+MODULE_AUTHOR("Sean Nyekjaer <sean@geanix.com>");
+MODULE_DESCRIPTION("NXP FXLS8962AF/FXLS8964AF accelerometer driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/fxls8962af-i2c.c b/drivers/iio/accel/fxls8962af-i2c.c
new file mode 100644
index 000000000000..8fbadfea1620
--- /dev/null
+++ b/drivers/iio/accel/fxls8962af-i2c.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * NXP FXLS8962AF/FXLS8964AF Accelerometer I2C Driver
+ *
+ * Copyright 2021 Connected Cars A/S
+ */
+
+#include <linux/dev_printk.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "fxls8962af.h"
+
+static int fxls8962af_probe(struct i2c_client *client)
+{
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i2c(client, &fxls8962af_i2c_regmap_conf);
+	if (IS_ERR(regmap)) {
+		dev_err(&client->dev, "Failed to initialize i2c regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	return fxls8962af_core_probe(&client->dev, regmap, client->irq);
+}
+
+static const struct i2c_device_id fxls8962af_id[] = {
+	{ "fxls8962af", fxls8962af },
+	{ "fxls8964af", fxls8964af },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, fxls8962af_id);
+
+static const struct of_device_id fxls8962af_of_match[] = {
+	{ .compatible = "nxp,fxls8962af" },
+	{ .compatible = "nxp,fxls8964af" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, fxls8962af_of_match);
+
+static struct i2c_driver fxls8962af_driver = {
+	.driver = {
+		   .name = "fxls8962af_i2c",
+		   .of_match_table = fxls8962af_of_match,
+		   .pm = &fxls8962af_pm_ops,
+		   },
+	.probe_new = fxls8962af_probe,
+	.id_table = fxls8962af_id,
+};
+module_i2c_driver(fxls8962af_driver);
+
+MODULE_AUTHOR("Sean Nyekjaer <sean@geanix.com>");
+MODULE_DESCRIPTION("NXP FXLS8962AF/FXLS8964AF accelerometer i2c driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_FXLS8962AF);
diff --git a/drivers/iio/accel/fxls8962af-spi.c b/drivers/iio/accel/fxls8962af-spi.c
new file mode 100644
index 000000000000..885b3ab7fcb5
--- /dev/null
+++ b/drivers/iio/accel/fxls8962af-spi.c
@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * NXP FXLS8962AF/FXLS8964AF Accelerometer SPI Driver
+ *
+ * Copyright 2021 Connected Cars A/S
+ */
+
+#include <linux/dev_printk.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spi/spi.h>
+#include <linux/regmap.h>
+
+#include "fxls8962af.h"
+
+static int fxls8962af_probe(struct spi_device *spi)
+{
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_spi(spi, &fxls8962af_spi_regmap_conf);
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "Failed to initialize spi regmap\n");
+		return PTR_ERR(regmap);
+	}
+
+	return fxls8962af_core_probe(&spi->dev, regmap, spi->irq);
+}
+
+static const struct of_device_id fxls8962af_spi_of_match[] = {
+	{ .compatible = "nxp,fxls8962af" },
+	{ .compatible = "nxp,fxls8964af" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, fxls8962af_spi_of_match);
+
+static const struct spi_device_id fxls8962af_spi_id_table[] = {
+	{ "fxls8962af", fxls8962af },
+	{ "fxls8964af", fxls8964af },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, fxls8962af_spi_id_table);
+
+static struct spi_driver fxls8962af_driver = {
+	.driver = {
+		   .name = "fxls8962af_spi",
+		   .pm = &fxls8962af_pm_ops,
+		   .of_match_table = fxls8962af_spi_of_match,
+		   },
+	.probe = fxls8962af_probe,
+	.id_table = fxls8962af_spi_id_table,
+};
+module_spi_driver(fxls8962af_driver);
+
+MODULE_AUTHOR("Sean Nyekjaer <sean@geanix.com>");
+MODULE_DESCRIPTION("NXP FXLS8962AF/FXLS8964AF accelerometer spi driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_FXLS8962AF);
diff --git a/drivers/iio/accel/fxls8962af.h b/drivers/iio/accel/fxls8962af.h
new file mode 100644
index 000000000000..9cbe98c3ba9a
--- /dev/null
+++ b/drivers/iio/accel/fxls8962af.h
@@ -0,0 +1,23 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2021 Connected Cars A/S
+ */
+#ifndef _FXLS8962AF_H_
+#define _FXLS8962AF_H_
+
+struct regmap;
+struct device;
+
+enum {
+	fxls8962af,
+	fxls8964af,
+};
+
+int fxls8962af_core_probe(struct device *dev, struct regmap *regmap, int irq);
+int fxls8962af_core_remove(struct device *dev);
+
+extern const struct dev_pm_ops fxls8962af_pm_ops;
+extern const struct regmap_config fxls8962af_i2c_regmap_conf;
+extern const struct regmap_config fxls8962af_spi_regmap_conf;
+
+#endif				/* _FXLS8962AF_H_ */
diff --git a/drivers/iio/accel/hid-sensor-accel-3d.c b/drivers/iio/accel/hid-sensor-accel-3d.c
index 0d9e2def2b25..a2def6f9380a 100644
--- a/drivers/iio/accel/hid-sensor-accel-3d.c
+++ b/drivers/iio/accel/hid-sensor-accel-3d.c
@@ -6,16 +6,11 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum accel_3d_channel {
@@ -25,12 +20,16 @@ enum accel_3d_channel {
 	ACCEL_3D_CHANNEL_MAX,
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP ACCEL_3D_CHANNEL_MAX
 struct accel_3d_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info accel[ACCEL_3D_CHANNEL_MAX];
-	/* Reserve for 3 channels + padding + timestamp */
-	u32 accel_val[ACCEL_3D_CHANNEL_MAX + 3];
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u32 accel_val[3];
+		s64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
@@ -44,6 +43,10 @@ static const u32 accel_3d_addresses[ACCEL_3D_CHANNEL_MAX] = {
 	HID_USAGE_SENSOR_ACCEL_Z_AXIS
 };
 
+static const u32 accel_3d_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ACCELERATION,
+};
+
 /* Channel definitions */
 static const struct iio_chan_spec accel_3d_channels[] = {
 	{
@@ -77,7 +80,7 @@ static const struct iio_chan_spec accel_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
 	},
-	IIO_CHAN_SOFT_TIMESTAMP(3)
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
 };
 
 /* Channel definitions */
@@ -112,7 +115,8 @@ static const struct iio_chan_spec gravity_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP),
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -241,8 +245,8 @@ static int accel_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 			accel_state->timestamp = iio_get_time_ns(indio_dev);
 
 		hid_sensor_push_data(indio_dev,
-				     accel_state->accel_val,
-				     sizeof(accel_state->accel_val),
+				     &accel_state->scan,
+				     sizeof(accel_state->scan),
 				     accel_state->timestamp);
 
 		accel_state->timestamp = 0;
@@ -267,7 +271,7 @@ static int accel_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 	case HID_USAGE_SENSOR_ACCEL_Y_AXIS:
 	case HID_USAGE_SENSOR_ACCEL_Z_AXIS:
 		offset = usage_id - HID_USAGE_SENSOR_ACCEL_X_AXIS;
-		accel_state->accel_val[CHANNEL_SCAN_INDEX_X + offset] =
+		accel_state->scan.accel_val[CHANNEL_SCAN_INDEX_X + offset] =
 						*(u32 *)raw_data;
 		ret = 0;
 	break;
@@ -317,18 +321,6 @@ static int accel_3d_parse_report(struct platform_device *pdev,
 				&st->accel[CHANNEL_SCAN_INDEX_X],
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ACCELERATION,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
-
 	return ret;
 }
 
@@ -366,13 +358,17 @@ static int hid_accel_3d_probe(struct platform_device *pdev)
 		channel_size = sizeof(gravity_channels);
 		indio_dev->num_channels = ARRAY_SIZE(gravity_channels);
 	}
-	ret = hid_sensor_parse_common_attributes(hsdev, hsdev->usage,
-					&accel_state->common_attributes);
+	ret = hid_sensor_parse_common_attributes(hsdev,
+						 hsdev->usage,
+						 &accel_state->common_attributes,
+						 accel_3d_sensitivity_addresses,
+						 ARRAY_SIZE(accel_3d_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
-	indio_dev->channels = kmemdup(channel_spec, channel_size, GFP_KERNEL);
+	indio_dev->channels = devm_kmemdup(&pdev->dev, channel_spec,
+					   channel_size, GFP_KERNEL);
 
 	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
@@ -383,26 +379,20 @@ static int hid_accel_3d_probe(struct platform_device *pdev)
 				hsdev->usage, accel_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
-		goto error_free_dev_mem;
+		return ret;
 	}
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &accel_3d_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&accel_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&accel_state->common_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -426,11 +416,7 @@ static int hid_accel_3d_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&accel_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &accel_state->common_attributes);
 	return ret;
 }
 
@@ -443,9 +429,7 @@ static int hid_accel_3d_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, hsdev->usage);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&accel_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &accel_state->common_attributes);
 
 	return 0;
 }
@@ -476,3 +460,4 @@ module_platform_driver(hid_accel_3d_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Accel 3D");
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/accel/kxcjk-1013.c b/drivers/iio/accel/kxcjk-1013.c
index c9924a65c32a..adc66b3615c0 100644
--- a/drivers/iio/accel/kxcjk-1013.c
+++ b/drivers/iio/accel/kxcjk-1013.c
@@ -14,6 +14,7 @@
 #include <linux/acpi.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
@@ -50,13 +51,15 @@
 #define KXTF9_REG_TILT_POS_CUR		0x10
 #define KXTF9_REG_TILT_POS_PREV		0x11
 #define KXTF9_REG_INT_SRC1		0x15
-#define KXCJK1013_REG_INT_SRC1		0x16	/* compatible, but called INT_SRC2 in KXTF9 ds */
+#define KXTF9_REG_INT_SRC2		0x16
+#define KXCJK1013_REG_INT_SRC1		0x16
 #define KXCJK1013_REG_INT_SRC2		0x17
 #define KXCJK1013_REG_STATUS_REG	0x18
 #define KXCJK1013_REG_INT_REL		0x1A
 #define KXCJK1013_REG_CTRL1		0x1B
 #define KXTF9_REG_CTRL2			0x1C
-#define KXCJK1013_REG_CTRL2		0x1D	/* mostly compatible, CTRL_REG3 in KTXF9 ds */
+#define KXTF9_REG_CTRL3			0x1D
+#define KXCJK1013_REG_CTRL2		0x1D
 #define KXCJK1013_REG_INT_CTRL1		0x1E
 #define KXCJK1013_REG_INT_CTRL2		0x1F
 #define KXTF9_REG_INT_CTRL3		0x20
@@ -76,6 +79,45 @@
 #define KXTF9_REG_HYST_SET		0x5F
 #define KXCJK1013_REG_WAKE_THRES	0x6A
 
+/* Everything up to 0x11 is equal to KXCJK1013/KXTF9 above */
+#define KX023_REG_INS1			0x12
+#define KX023_REG_INS2			0x13
+#define KX023_REG_INS3			0x14
+#define KX023_REG_STAT			0x15
+#define KX023_REG_INT_REL		0x17
+#define KX023_REG_CNTL1			0x18
+#define KX023_REG_CNTL2			0x19
+#define KX023_REG_CNTL3			0x1A
+#define KX023_REG_ODCNTL		0x1B
+#define KX023_REG_INC1			0x1C
+#define KX023_REG_INC2			0x1D
+#define KX023_REG_INC3			0x1E
+#define KX023_REG_INC4			0x1F
+#define KX023_REG_INC5			0x20
+#define KX023_REG_INC6			0x21
+#define KX023_REG_TILT_TIMER		0x22
+#define KX023_REG_WUFC			0x23
+#define KX023_REG_TDTRC			0x24
+#define KX023_REG_TDTC			0x25
+#define KX023_REG_TTH			0x26
+#define KX023_REG_TTL			0x27
+#define KX023_REG_FTD			0x28
+#define KX023_REG_STD			0x29
+#define KX023_REG_TLT			0x2A
+#define KX023_REG_TWS			0x2B
+#define KX023_REG_ATH			0x30
+#define KX023_REG_TILT_ANGLE_LL		0x32
+#define KX023_REG_TILT_ANGLE_HL		0x33
+#define KX023_REG_HYST_SET		0x34
+#define KX023_REG_LP_CNTL		0x35
+#define KX023_REG_BUF_CNTL1		0x3A
+#define KX023_REG_BUF_CNTL2		0x3B
+#define KX023_REG_BUF_STATUS_1		0x3C
+#define KX023_REG_BUF_STATUS_2		0x3D
+#define KX023_REG_BUF_CLEAR		0x3E
+#define KX023_REG_BUF_READ		0x3F
+#define KX023_REG_SELF_TEST		0x60
+
 #define KXCJK1013_REG_CTRL1_BIT_PC1	BIT(7)
 #define KXCJK1013_REG_CTRL1_BIT_RES	BIT(6)
 #define KXCJK1013_REG_CTRL1_BIT_DRDY	BIT(5)
@@ -116,6 +158,14 @@
 #define KXCJK1013_REG_INT_SRC2_BIT_XP	BIT(4)
 #define KXCJK1013_REG_INT_SRC2_BIT_XN	BIT(5)
 
+/* KX023 interrupt routing to INT1. INT2 can be configured with INC6 */
+#define KX023_REG_INC4_BFI1		BIT(6)
+#define KX023_REG_INC4_WMI1		BIT(5)
+#define KX023_REG_INC4_DRDY1		BIT(4)
+#define KX023_REG_INC4_TDTI1		BIT(2)
+#define KX023_REG_INC4_WUFI1		BIT(1)
+#define KX023_REG_INC4_TPI1		BIT(0)
+
 #define KXCJK1013_DEFAULT_WAKE_THRES	1
 
 enum kx_chipset {
@@ -123,16 +173,85 @@ enum kx_chipset {
 	KXCJ91008,
 	KXTJ21009,
 	KXTF9,
+	KX0231025,
 	KX_MAX_CHIPS /* this must be last */
 };
 
+enum kx_acpi_type {
+	ACPI_GENERIC,
+	ACPI_SMO8500,
+	ACPI_KIOX010A,
+};
+
+struct kx_chipset_regs {
+	u8 int_src1;
+	u8 int_src2;
+	u8 int_rel;
+	u8 ctrl1;
+	u8 wuf_ctrl;
+	u8 int_ctrl1;
+	u8 data_ctrl;
+	u8 wake_timer;
+	u8 wake_thres;
+};
+
+static const struct kx_chipset_regs kxcjk1013_regs = {
+	.int_src1	= KXCJK1013_REG_INT_SRC1,
+	.int_src2	= KXCJK1013_REG_INT_SRC2,
+	.int_rel	= KXCJK1013_REG_INT_REL,
+	.ctrl1		= KXCJK1013_REG_CTRL1,
+	.wuf_ctrl	= KXCJK1013_REG_CTRL2,
+	.int_ctrl1	= KXCJK1013_REG_INT_CTRL1,
+	.data_ctrl	= KXCJK1013_REG_DATA_CTRL,
+	.wake_timer	= KXCJK1013_REG_WAKE_TIMER,
+	.wake_thres	= KXCJK1013_REG_WAKE_THRES,
+};
+
+static const struct kx_chipset_regs kxtf9_regs = {
+	/* .int_src1 was moved to INT_SRC2 on KXTF9 */
+	.int_src1	= KXTF9_REG_INT_SRC2,
+	/* .int_src2 is not available */
+	.int_rel	= KXCJK1013_REG_INT_REL,
+	.ctrl1		= KXCJK1013_REG_CTRL1,
+	.wuf_ctrl	= KXTF9_REG_CTRL3,
+	.int_ctrl1	= KXCJK1013_REG_INT_CTRL1,
+	.data_ctrl	= KXCJK1013_REG_DATA_CTRL,
+	.wake_timer	= KXCJK1013_REG_WAKE_TIMER,
+	.wake_thres	= KXTF9_REG_WAKE_THRESH,
+};
+
+/* The registers have totally different names but the bits are compatible */
+static const struct kx_chipset_regs kx0231025_regs = {
+	.int_src1	= KX023_REG_INS2,
+	.int_src2	= KX023_REG_INS3,
+	.int_rel	= KX023_REG_INT_REL,
+	.ctrl1		= KX023_REG_CNTL1,
+	.wuf_ctrl	= KX023_REG_CNTL3,
+	.int_ctrl1	= KX023_REG_INC1,
+	.data_ctrl	= KX023_REG_ODCNTL,
+	.wake_timer	= KX023_REG_WUFC,
+	.wake_thres	= KX023_REG_ATH,
+};
+
+enum kxcjk1013_axis {
+	AXIS_X,
+	AXIS_Y,
+	AXIS_Z,
+	AXIS_MAX
+};
+
 struct kxcjk1013_data {
+	struct regulator_bulk_data regulators[2];
 	struct i2c_client *client;
 	struct iio_trigger *dready_trig;
 	struct iio_trigger *motion_trig;
 	struct iio_mount_matrix orientation;
 	struct mutex mutex;
-	s16 buffer[8];
+	/* Ensure timestamp naturally aligned */
+	struct {
+		s16 chans[AXIS_MAX];
+		s64 timestamp __aligned(8);
+	} scan;
 	u8 odr_bits;
 	u8 range;
 	int wake_thres;
@@ -143,14 +262,8 @@ struct kxcjk1013_data {
 	bool motion_trigger_on;
 	int64_t timestamp;
 	enum kx_chipset chipset;
-	bool is_smo8500_device;
-};
-
-enum kxcjk1013_axis {
-	AXIS_X,
-	AXIS_Y,
-	AXIS_Z,
-	AXIS_MAX,
+	enum kx_acpi_type acpi_type;
+	const struct kx_chipset_regs *regs;
 };
 
 enum kxcjk1013_mode {
@@ -202,7 +315,7 @@ static const char *const kxtf9_samp_freq_avail =
 	"25 50 100 200 400 800";
 
 /* Refer to section 4 of the specification */
-static const struct {
+static __maybe_unused const struct {
 	int odr_bits;
 	int usec;
 } odr_start_up_times[KX_MAX_CHIPS][12] = {
@@ -260,6 +373,22 @@ static const struct {
 		{0x05, 5100},
 		{0x06, 2700},
 	},
+	/* KX023-1025 */
+	{
+		/* First 4 are not in datasheet, taken from KXCTJ2-1009 */
+		{0x08, 1240000},
+		{0x09, 621000},
+		{0x0A, 309000},
+		{0x0B, 151000},
+		{0, 81000},
+		{0x01, 40000},
+		{0x02, 22000},
+		{0x03, 12000},
+		{0x04, 7000},
+		{0x05, 4400},
+		{0x06, 3000},
+		{0x07, 3000},
+	},
 };
 
 static const struct {
@@ -270,12 +399,38 @@ static const struct {
 			      {19163, 1, 0},
 			      {38326, 0, 1} };
 
+#ifdef CONFIG_ACPI
+enum kiox010a_fn_index {
+	KIOX010A_SET_LAPTOP_MODE = 1,
+	KIOX010A_SET_TABLET_MODE = 2,
+};
+
+static int kiox010a_dsm(struct device *dev, int fn_index)
+{
+	acpi_handle handle = ACPI_HANDLE(dev);
+	guid_t kiox010a_dsm_guid;
+	union acpi_object *obj;
+
+	if (!handle)
+		return -ENODEV;
+
+	guid_parse("1f339696-d475-4e26-8cad-2e9f8e6d7a91", &kiox010a_dsm_guid);
+
+	obj = acpi_evaluate_dsm(handle, &kiox010a_dsm_guid, 1, fn_index, NULL);
+	if (!obj)
+		return -EIO;
+
+	ACPI_FREE(obj);
+	return 0;
+}
+#endif
+
 static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
 			      enum kxcjk1013_mode mode)
 {
 	int ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 		return ret;
@@ -286,8 +441,7 @@ static int kxcjk1013_set_mode(struct kxcjk1013_data *data,
 	else
 		ret |= KXCJK1013_REG_CTRL1_BIT_PC1;
 
-	ret = i2c_smbus_write_byte_data(data->client,
-					KXCJK1013_REG_CTRL1, ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 		return ret;
@@ -301,7 +455,7 @@ static int kxcjk1013_get_mode(struct kxcjk1013_data *data,
 {
 	int ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 		return ret;
@@ -319,7 +473,7 @@ static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
 {
 	int ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 		return ret;
@@ -330,9 +484,7 @@ static int kxcjk1013_set_range(struct kxcjk1013_data *data, int range_index)
 	ret |= (KXCJK1013_scale_table[range_index].gsel_0 << 3);
 	ret |= (KXCJK1013_scale_table[range_index].gsel_1 << 4);
 
-	ret = i2c_smbus_write_byte_data(data->client,
-					KXCJK1013_REG_CTRL1,
-					ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 		return ret;
@@ -347,6 +499,13 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 {
 	int ret;
 
+#ifdef CONFIG_ACPI
+	if (data->acpi_type == ACPI_KIOX010A) {
+		/* Make sure the kbd and touchpad on 2-in-1s using 2 KXCJ91008-s work */
+		kiox010a_dsm(&data->client->dev, KIOX010A_SET_LAPTOP_MODE);
+	}
+#endif
+
 	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_WHO_AM_I);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading who_am_i\n");
@@ -359,7 +518,7 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 	if (ret < 0)
 		return ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 		return ret;
@@ -368,8 +527,7 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 	/* Set 12 bit mode */
 	ret |= KXCJK1013_REG_CTRL1_BIT_RES;
 
-	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL1,
-					ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl\n");
 		return ret;
@@ -380,7 +538,7 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 	if (ret < 0)
 		return ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_DATA_CTRL);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->data_ctrl);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_data_ctrl\n");
 		return ret;
@@ -389,7 +547,7 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 	data->odr_bits = ret;
 
 	/* Set up INT polarity */
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->int_ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
 		return ret;
@@ -400,13 +558,23 @@ static int kxcjk1013_chip_init(struct kxcjk1013_data *data)
 	else
 		ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEA;
 
-	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
-					ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->int_ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
 		return ret;
 	}
 
+	/* On KX023, route all used interrupts to INT1 for now */
+	if (data->chipset == KX0231025 && data->client->irq > 0) {
+		ret = i2c_smbus_write_byte_data(data->client, KX023_REG_INC4,
+						KX023_REG_INC4_DRDY1 |
+						KX023_REG_INC4_WUFI1);
+		if (ret < 0) {
+			dev_err(&data->client->dev, "Error writing reg_inc4\n");
+			return ret;
+		}
+	}
+
 	ret = kxcjk1013_set_mode(data, OPERATION);
 	if (ret < 0)
 		return ret;
@@ -437,7 +605,7 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
 	int ret;
 
 	if (on)
-		ret = pm_runtime_get_sync(&data->client->dev);
+		ret = pm_runtime_resume_and_get(&data->client->dev);
 	else {
 		pm_runtime_mark_last_busy(&data->client->dev);
 		ret = pm_runtime_put_autosuspend(&data->client->dev);
@@ -445,8 +613,6 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
 	if (ret < 0) {
 		dev_err(&data->client->dev,
 			"Failed: %s for %d\n", __func__, on);
-		if (on)
-			pm_runtime_put_noidle(&data->client->dev);
 		return ret;
 	}
 #endif
@@ -456,10 +622,9 @@ static int kxcjk1013_set_power_state(struct kxcjk1013_data *data, bool on)
 
 static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
 {
-	int waketh_reg, ret;
+	int ret;
 
-	ret = i2c_smbus_write_byte_data(data->client,
-					KXCJK1013_REG_WAKE_TIMER,
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->wake_timer,
 					data->wake_dur);
 	if (ret < 0) {
 		dev_err(&data->client->dev,
@@ -467,9 +632,7 @@ static int kxcjk1013_chip_update_thresholds(struct kxcjk1013_data *data)
 		return ret;
 	}
 
-	waketh_reg = data->chipset == KXTF9 ?
-		KXTF9_REG_WAKE_THRESH : KXCJK1013_REG_WAKE_THRES;
-	ret = i2c_smbus_write_byte_data(data->client, waketh_reg,
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->wake_thres,
 					data->wake_thres);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_wake_thres\n");
@@ -498,7 +661,7 @@ static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
 	if (ret < 0)
 		return ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->int_ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
 		return ret;
@@ -509,14 +672,13 @@ static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
 	else
 		ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN;
 
-	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
-					ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->int_ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
 		return ret;
 	}
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 		return ret;
@@ -527,8 +689,7 @@ static int kxcjk1013_setup_any_motion_interrupt(struct kxcjk1013_data *data,
 	else
 		ret &= ~KXCJK1013_REG_CTRL1_BIT_WUFE;
 
-	ret = i2c_smbus_write_byte_data(data->client,
-					KXCJK1013_REG_CTRL1, ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 		return ret;
@@ -558,7 +719,7 @@ static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
 	if (ret < 0)
 		return ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->int_ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_int_ctrl1\n");
 		return ret;
@@ -569,14 +730,13 @@ static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
 	else
 		ret &= ~KXCJK1013_REG_INT_CTRL1_BIT_IEN;
 
-	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_INT_CTRL1,
-					ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->int_ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_int_ctrl1\n");
 		return ret;
 	}
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_CTRL1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->ctrl1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
 		return ret;
@@ -587,8 +747,7 @@ static int kxcjk1013_setup_new_data_interrupt(struct kxcjk1013_data *data,
 	else
 		ret &= ~KXCJK1013_REG_CTRL1_BIT_DRDY;
 
-	ret = i2c_smbus_write_byte_data(data->client,
-					KXCJK1013_REG_CTRL1, ret);
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->ctrl1, ret);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
 		return ret;
@@ -660,7 +819,7 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
 	if (ret < 0)
 		return ret;
 
-	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_DATA_CTRL,
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->data_ctrl,
 					odr_setting->odr_bits);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing data_ctrl\n");
@@ -669,7 +828,7 @@ static int kxcjk1013_set_odr(struct kxcjk1013_data *data, int val, int val2)
 
 	data->odr_bits = odr_setting->odr_bits;
 
-	ret = i2c_smbus_write_byte_data(data->client, KXCJK1013_REG_CTRL2,
+	ret = i2c_smbus_write_byte_data(data->client, data->regs->wuf_ctrl,
 					odr_setting->wuf_bits);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error writing reg_ctrl2\n");
@@ -768,7 +927,8 @@ static int kxcjk1013_read_raw(struct iio_dev *indio_dev,
 				mutex_unlock(&data->mutex);
 				return ret;
 			}
-			*val = sign_extend32(ret >> 4, 11);
+			*val = sign_extend32(ret >> chan->scan_type.shift,
+					     chan->scan_type.realbits - 1);
 			ret = kxcjk1013_set_power_state(data, false);
 		}
 		mutex_unlock(&data->mutex);
@@ -904,7 +1064,7 @@ static int kxcjk1013_write_event_config(struct iio_dev *indio_dev,
 
 	/*
 	 * We will expect the enable and disable to do operation in
-	 * in reverse order. This will happen here anyway as our
+	 * reverse order. This will happen here anyway as our
 	 * resume operation uses sync mode runtime pm calls, the
 	 * suspend operation will be delayed by autosuspend delay
 	 * So the disable operation will still happen in reverse of
@@ -1027,9 +1187,7 @@ static const struct iio_chan_spec kxcjk1013_channels[] = {
 
 static const struct iio_buffer_setup_ops kxcjk1013_buffer_setup_ops = {
 	.preenable		= kxcjk1013_buffer_preenable,
-	.postenable		= iio_triggered_buffer_postenable,
 	.postdisable		= kxcjk1013_buffer_postdisable,
-	.predisable		= iio_triggered_buffer_predisable,
 };
 
 static const struct iio_info kxcjk1013_info = {
@@ -1055,12 +1213,12 @@ static irqreturn_t kxcjk1013_trigger_handler(int irq, void *p)
 	ret = i2c_smbus_read_i2c_block_data_or_emulated(data->client,
 							KXCJK1013_REG_XOUT_L,
 							AXIS_MAX * 2,
-							(u8 *)data->buffer);
+							(u8 *)data->scan.chans);
 	mutex_unlock(&data->mutex);
 	if (ret < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   data->timestamp);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -1068,19 +1226,15 @@ err:
 	return IRQ_HANDLED;
 }
 
-static int kxcjk1013_trig_try_reen(struct iio_trigger *trig)
+static void kxcjk1013_trig_reen(struct iio_trigger *trig)
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct kxcjk1013_data *data = iio_priv(indio_dev);
 	int ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
-	if (ret < 0) {
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->int_rel);
+	if (ret < 0)
 		dev_err(&data->client->dev, "Error reading reg_int_rel\n");
-		return ret;
-	}
-
-	return 0;
 }
 
 static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
@@ -1124,15 +1278,14 @@ static int kxcjk1013_data_rdy_trigger_set_state(struct iio_trigger *trig,
 
 static const struct iio_trigger_ops kxcjk1013_trigger_ops = {
 	.set_trigger_state = kxcjk1013_data_rdy_trigger_set_state,
-	.try_reenable = kxcjk1013_trig_try_reen,
+	.reenable = kxcjk1013_trig_reen,
 };
 
 static void kxcjk1013_report_motion_event(struct iio_dev *indio_dev)
 {
 	struct kxcjk1013_data *data = iio_priv(indio_dev);
 
-	int ret = i2c_smbus_read_byte_data(data->client,
-					   KXCJK1013_REG_INT_SRC2);
+	int ret = i2c_smbus_read_byte_data(data->client, data->regs->int_src2);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_int_src2\n");
 		return;
@@ -1199,7 +1352,7 @@ static irqreturn_t kxcjk1013_event_handler(int irq, void *private)
 	struct kxcjk1013_data *data = iio_priv(indio_dev);
 	int ret;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_SRC1);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->int_src1);
 	if (ret < 0) {
 		dev_err(&data->client->dev, "Error reading reg_int_src1\n");
 		goto ack_intr;
@@ -1222,7 +1375,7 @@ ack_intr:
 	if (data->dready_trigger_on)
 		return IRQ_HANDLED;
 
-	ret = i2c_smbus_read_byte_data(data->client, KXCJK1013_REG_INT_REL);
+	ret = i2c_smbus_read_byte_data(data->client, data->regs->int_rel);
 	if (ret < 0)
 		dev_err(&data->client->dev, "Error reading reg_int_rel\n");
 
@@ -1249,7 +1402,8 @@ static irqreturn_t kxcjk1013_data_rdy_trig_poll(int irq, void *private)
 
 static const char *kxcjk1013_match_acpi_device(struct device *dev,
 					       enum kx_chipset *chipset,
-					       bool *is_smo8500_device)
+					       enum kx_acpi_type *acpi_type,
+					       const char **label)
 {
 	const struct acpi_device_id *id;
 
@@ -1257,14 +1411,27 @@ static const char *kxcjk1013_match_acpi_device(struct device *dev,
 	if (!id)
 		return NULL;
 
-	if (strcmp(id->id, "SMO8500") == 0)
-		*is_smo8500_device = true;
+	if (strcmp(id->id, "SMO8500") == 0) {
+		*acpi_type = ACPI_SMO8500;
+	} else if (strcmp(id->id, "KIOX010A") == 0) {
+		*acpi_type = ACPI_KIOX010A;
+		*label = "accel-display";
+	} else if (strcmp(id->id, "KIOX020A") == 0) {
+		*label = "accel-base";
+	}
 
 	*chipset = (enum kx_chipset)id->driver_data;
 
 	return dev_name(dev);
 }
 
+static void kxcjk1013_disable_regulators(void *d)
+{
+	struct kxcjk1013_data *data = d;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
+}
+
 static int kxcjk1013_probe(struct i2c_client *client,
 			   const struct i2c_device_id *id)
 {
@@ -1289,29 +1456,67 @@ static int kxcjk1013_probe(struct i2c_client *client,
 	} else {
 		data->active_high_intr = true; /* default polarity */
 
-		ret = iio_read_mount_matrix(&client->dev, "mount-matrix",
-					    &data->orientation);
+		ret = iio_read_mount_matrix(&client->dev, &data->orientation);
 		if (ret)
 			return ret;
 	}
 
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(&client->dev, ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(&client->dev, ret, "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, kxcjk1013_disable_regulators, data);
+	if (ret)
+		return ret;
+
+	/*
+	 * A typical delay of 10ms is required for powering up
+	 * according to the data sheets of supported chips.
+	 * Hence double that to play safe.
+	 */
+	msleep(20);
+
 	if (id) {
 		data->chipset = (enum kx_chipset)(id->driver_data);
 		name = id->name;
 	} else if (ACPI_HANDLE(&client->dev)) {
 		name = kxcjk1013_match_acpi_device(&client->dev,
 						   &data->chipset,
-						   &data->is_smo8500_device);
+						   &data->acpi_type,
+						   &indio_dev->label);
 	} else
 		return -ENODEV;
 
+	switch (data->chipset) {
+	case KXCJK1013:
+	case KXCJ91008:
+	case KXTJ21009:
+		data->regs = &kxcjk1013_regs;
+		break;
+	case KXTF9:
+		data->regs = &kxtf9_regs;
+		break;
+	case KX0231025:
+		data->regs = &kx0231025_regs;
+		break;
+	default:
+		return -EINVAL;
+	}
+
 	ret = kxcjk1013_chip_init(data);
 	if (ret < 0)
 		return ret;
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = kxcjk1013_channels;
 	indio_dev->num_channels = ARRAY_SIZE(kxcjk1013_channels);
 	indio_dev->available_scan_masks = kxcjk1013_scan_masks;
@@ -1319,7 +1524,7 @@ static int kxcjk1013_probe(struct i2c_client *client,
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &kxcjk1013_info;
 
-	if (client->irq > 0 && !data->is_smo8500_device) {
+	if (client->irq > 0 && data->acpi_type != ACPI_SMO8500) {
 		ret = devm_request_threaded_irq(&client->dev, client->irq,
 						kxcjk1013_data_rdy_trig_poll,
 						kxcjk1013_event_handler,
@@ -1332,7 +1537,7 @@ static int kxcjk1013_probe(struct i2c_client *client,
 		data->dready_trig = devm_iio_trigger_alloc(&client->dev,
 							   "%s-dev%d",
 							   indio_dev->name,
-							   indio_dev->id);
+							   iio_device_id(indio_dev));
 		if (!data->dready_trig) {
 			ret = -ENOMEM;
 			goto err_poweroff;
@@ -1341,22 +1546,20 @@ static int kxcjk1013_probe(struct i2c_client *client,
 		data->motion_trig = devm_iio_trigger_alloc(&client->dev,
 							  "%s-any-motion-dev%d",
 							  indio_dev->name,
-							  indio_dev->id);
+							  iio_device_id(indio_dev));
 		if (!data->motion_trig) {
 			ret = -ENOMEM;
 			goto err_poweroff;
 		}
 
-		data->dready_trig->dev.parent = &client->dev;
 		data->dready_trig->ops = &kxcjk1013_trigger_ops;
 		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
-		indio_dev->trig = data->dready_trig;
-		iio_trigger_get(indio_dev->trig);
 		ret = iio_trigger_register(data->dready_trig);
 		if (ret)
 			goto err_poweroff;
 
-		data->motion_trig->dev.parent = &client->dev;
+		indio_dev->trig = iio_trigger_get(data->dready_trig);
+
 		data->motion_trig->ops = &kxcjk1013_trigger_ops;
 		iio_trigger_set_drvdata(data->motion_trig, indio_dev);
 		ret = iio_trigger_register(data->motion_trig);
@@ -1387,14 +1590,16 @@ static int kxcjk1013_probe(struct i2c_client *client,
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev, "unable to register iio device\n");
-		goto err_buffer_cleanup;
+		goto err_pm_cleanup;
 	}
 
 	return 0;
 
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(&client->dev);
+	pm_runtime_disable(&client->dev);
 err_buffer_cleanup:
-	if (data->dready_trig)
-		iio_triggered_buffer_cleanup(indio_dev);
+	iio_triggered_buffer_cleanup(indio_dev);
 err_trigger_unregister:
 	if (data->dready_trig)
 		iio_trigger_unregister(data->dready_trig);
@@ -1406,7 +1611,7 @@ err_poweroff:
 	return ret;
 }
 
-static int kxcjk1013_remove(struct i2c_client *client)
+static void kxcjk1013_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct kxcjk1013_data *data = iio_priv(indio_dev);
@@ -1415,10 +1620,9 @@ static int kxcjk1013_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
+	iio_triggered_buffer_cleanup(indio_dev);
 	if (data->dready_trig) {
-		iio_triggered_buffer_cleanup(indio_dev);
 		iio_trigger_unregister(data->dready_trig);
 		iio_trigger_unregister(data->motion_trig);
 	}
@@ -1426,8 +1630,6 @@ static int kxcjk1013_remove(struct i2c_client *client)
 	mutex_lock(&data->mutex);
 	kxcjk1013_set_mode(data, STANDBY);
 	mutex_unlock(&data->mutex);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM_SLEEP
@@ -1523,6 +1725,7 @@ static const struct i2c_device_id kxcjk1013_id[] = {
 	{"kxcj91008", KXCJ91008},
 	{"kxtj21009", KXTJ21009},
 	{"kxtf9",     KXTF9},
+	{"kx023-1025", KX0231025},
 	{"SMO8500",   KXCJ91008},
 	{}
 };
@@ -1534,6 +1737,7 @@ static const struct of_device_id kxcjk1013_of_match[] = {
 	{ .compatible = "kionix,kxcj91008", },
 	{ .compatible = "kionix,kxtj21009", },
 	{ .compatible = "kionix,kxtf9", },
+	{ .compatible = "kionix,kx023-1025", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, kxcjk1013_of_match);
diff --git a/drivers/iio/accel/kxsd9-i2c.c b/drivers/iio/accel/kxsd9-i2c.c
index 38411e1c155b..61346ea8ef19 100644
--- a/drivers/iio/accel/kxsd9-i2c.c
+++ b/drivers/iio/accel/kxsd9-i2c.c
@@ -2,6 +2,7 @@
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
@@ -21,8 +22,8 @@ static int kxsd9_i2c_probe(struct i2c_client *i2c,
 
 	regmap = devm_regmap_init_i2c(i2c, &config);
 	if (IS_ERR(regmap)) {
-		dev_err(&i2c->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&i2c->dev, "Failed to register i2c regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
@@ -31,20 +32,16 @@ static int kxsd9_i2c_probe(struct i2c_client *i2c,
 				  i2c->name);
 }
 
-static int kxsd9_i2c_remove(struct i2c_client *client)
+static void kxsd9_i2c_remove(struct i2c_client *client)
 {
-	return kxsd9_common_remove(&client->dev);
+	kxsd9_common_remove(&client->dev);
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id kxsd9_of_match[] = {
 	{ .compatible = "kionix,kxsd9", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, kxsd9_of_match);
-#else
-#define kxsd9_of_match NULL
-#endif
 
 static const struct i2c_device_id kxsd9_i2c_id[] = {
 	{"kxsd9", 0},
@@ -55,8 +52,8 @@ MODULE_DEVICE_TABLE(i2c, kxsd9_i2c_id);
 static struct i2c_driver kxsd9_i2c_driver = {
 	.driver = {
 		.name	= "kxsd9",
-		.of_match_table = of_match_ptr(kxsd9_of_match),
-		.pm = &kxsd9_dev_pm_ops,
+		.of_match_table = kxsd9_of_match,
+		.pm = pm_ptr(&kxsd9_dev_pm_ops),
 	},
 	.probe		= kxsd9_i2c_probe,
 	.remove		= kxsd9_i2c_remove,
@@ -66,3 +63,4 @@ module_i2c_driver(kxsd9_i2c_driver);
 
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("KXSD9 accelerometer I2C interface");
+MODULE_IMPORT_NS(IIO_KXSD9);
diff --git a/drivers/iio/accel/kxsd9-spi.c b/drivers/iio/accel/kxsd9-spi.c
index 7971ec1eeb7e..07f14a9f22c7 100644
--- a/drivers/iio/accel/kxsd9-spi.c
+++ b/drivers/iio/accel/kxsd9-spi.c
@@ -32,9 +32,9 @@ static int kxsd9_spi_probe(struct spi_device *spi)
 				  spi_get_device_id(spi)->name);
 }
 
-static int kxsd9_spi_remove(struct spi_device *spi)
+static void kxsd9_spi_remove(struct spi_device *spi)
 {
-	return kxsd9_common_remove(&spi->dev);
+	kxsd9_common_remove(&spi->dev);
 }
 
 static const struct spi_device_id kxsd9_spi_id[] = {
@@ -44,15 +44,15 @@ static const struct spi_device_id kxsd9_spi_id[] = {
 MODULE_DEVICE_TABLE(spi, kxsd9_spi_id);
 
 static const struct of_device_id kxsd9_of_match[] = {
-        { .compatible = "kionix,kxsd9" },
-        { },
+	{ .compatible = "kionix,kxsd9" },
+	{ }
 };
 MODULE_DEVICE_TABLE(of, kxsd9_of_match);
 
 static struct spi_driver kxsd9_spi_driver = {
 	.driver = {
 		.name = "kxsd9",
-		.pm = &kxsd9_dev_pm_ops,
+		.pm = pm_ptr(&kxsd9_dev_pm_ops),
 		.of_match_table = kxsd9_of_match,
 	},
 	.probe = kxsd9_spi_probe,
@@ -64,3 +64,4 @@ module_spi_driver(kxsd9_spi_driver);
 MODULE_AUTHOR("Jonathan Cameron <jic23@kernel.org>");
 MODULE_DESCRIPTION("Kionix KXSD9 SPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_KXSD9);
diff --git a/drivers/iio/accel/kxsd9.c b/drivers/iio/accel/kxsd9.c
index 0b876b2dc5bd..ba99649fe195 100644
--- a/drivers/iio/accel/kxsd9.c
+++ b/drivers/iio/accel/kxsd9.c
@@ -209,23 +209,29 @@ static irqreturn_t kxsd9_trigger_handler(int irq, void *p)
 	const struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct kxsd9_state *st = iio_priv(indio_dev);
+	/*
+	 * Ensure correct positioning and alignment of timestamp.
+	 * No need to zero initialize as all elements written.
+	 */
+	struct {
+		__be16 chan[4];
+		s64 ts __aligned(8);
+	} hw_values;
 	int ret;
-	/* 4 * 16bit values AND timestamp */
-	__be16 hw_values[8];
 
 	ret = regmap_bulk_read(st->map,
 			       KXSD9_REG_X,
-			       &hw_values,
-			       8);
+			       hw_values.chan,
+			       sizeof(hw_values.chan));
 	if (ret) {
-		dev_err(st->dev,
-			"error reading data\n");
-		return ret;
+		dev_err(st->dev, "error reading data: %d\n", ret);
+		goto out;
 	}
 
 	iio_push_to_buffers_with_timestamp(indio_dev,
-					   hw_values,
+					   &hw_values,
 					   iio_get_time_ns(indio_dev));
+out:
 	iio_trigger_notify_done(indio_dev->trig);
 
 	return IRQ_HANDLED;
@@ -252,8 +258,6 @@ static int kxsd9_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops kxsd9_buffer_setup_ops = {
 	.preenable = kxsd9_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = kxsd9_buffer_postdisable,
 };
 
@@ -411,13 +415,12 @@ int kxsd9_common_probe(struct device *dev,
 	indio_dev->channels = kxsd9_channels;
 	indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels);
 	indio_dev->name = name;
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &kxsd9_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->available_scan_masks = kxsd9_scan_masks;
 
 	/* Read the mounting matrix, if present */
-	ret = iio_read_mount_matrix(dev, "mount-matrix", &st->orientation);
+	ret = iio_read_mount_matrix(dev, &st->orientation);
 	if (ret)
 		return ret;
 
@@ -473,9 +476,9 @@ err_power_down:
 
 	return ret;
 }
-EXPORT_SYMBOL(kxsd9_common_probe);
+EXPORT_SYMBOL_NS(kxsd9_common_probe, IIO_KXSD9);
 
-int kxsd9_common_remove(struct device *dev)
+void kxsd9_common_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct kxsd9_state *st = iio_priv(indio_dev);
@@ -486,12 +489,9 @@ int kxsd9_common_remove(struct device *dev)
 	pm_runtime_put_noidle(dev);
 	pm_runtime_disable(dev);
 	kxsd9_power_down(st);
-
-	return 0;
 }
-EXPORT_SYMBOL(kxsd9_common_remove);
+EXPORT_SYMBOL_NS(kxsd9_common_remove, IIO_KXSD9);
 
-#ifdef CONFIG_PM
 static int kxsd9_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -507,15 +507,9 @@ static int kxsd9_runtime_resume(struct device *dev)
 
 	return kxsd9_power_up(st);
 }
-#endif /* CONFIG_PM */
 
-const struct dev_pm_ops kxsd9_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(kxsd9_runtime_suspend,
-			   kxsd9_runtime_resume, NULL)
-};
-EXPORT_SYMBOL(kxsd9_dev_pm_ops);
+EXPORT_NS_RUNTIME_DEV_PM_OPS(kxsd9_dev_pm_ops, kxsd9_runtime_suspend,
+			     kxsd9_runtime_resume, NULL, IIO_KXSD9);
 
 MODULE_AUTHOR("Jonathan Cameron <jic23@kernel.org>");
 MODULE_DESCRIPTION("Kionix KXSD9 driver");
diff --git a/drivers/iio/accel/kxsd9.h b/drivers/iio/accel/kxsd9.h
index 5e3ca212f5be..c04dbfa4e0d0 100644
--- a/drivers/iio/accel/kxsd9.h
+++ b/drivers/iio/accel/kxsd9.h
@@ -8,6 +8,6 @@
 int kxsd9_common_probe(struct device *dev,
 		       struct regmap *map,
 		       const char *name);
-int kxsd9_common_remove(struct device *dev);
+void kxsd9_common_remove(struct device *dev);
 
 extern const struct dev_pm_ops kxsd9_dev_pm_ops;
diff --git a/drivers/iio/accel/mc3230.c b/drivers/iio/accel/mc3230.c
index 02b3d25b3d96..2462000e0519 100644
--- a/drivers/iio/accel/mc3230.c
+++ b/drivers/iio/accel/mc3230.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
-/**
+/*
  * mCube MC3230 3-Axis Accelerometer
  *
  * Copyright (c) 2016 Hans de Goede <hdegoede@redhat.com>
@@ -132,7 +132,6 @@ static int mc3230_probe(struct i2c_client *client,
 	data->client = client;
 	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &mc3230_info;
 	indio_dev->name = "mc3230";
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -152,16 +151,15 @@ static int mc3230_probe(struct i2c_client *client,
 	return ret;
 }
 
-static int mc3230_remove(struct i2c_client *client)
+static void mc3230_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
 
-	return mc3230_set_opcon(iio_priv(indio_dev), MC3230_MODE_OPCON_STANDBY);
+	mc3230_set_opcon(iio_priv(indio_dev), MC3230_MODE_OPCON_STANDBY);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int mc3230_suspend(struct device *dev)
 {
 	struct mc3230_data *data;
@@ -179,9 +177,8 @@ static int mc3230_resume(struct device *dev)
 
 	return mc3230_set_opcon(data, MC3230_MODE_OPCON_WAKE);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(mc3230_pm_ops, mc3230_suspend, mc3230_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(mc3230_pm_ops, mc3230_suspend, mc3230_resume);
 
 static const struct i2c_device_id mc3230_i2c_id[] = {
 	{"mc3230", 0},
@@ -192,7 +189,7 @@ MODULE_DEVICE_TABLE(i2c, mc3230_i2c_id);
 static struct i2c_driver mc3230_driver = {
 	.driver = {
 		.name = "mc3230",
-		.pm = &mc3230_pm_ops,
+		.pm = pm_sleep_ptr(&mc3230_pm_ops),
 	},
 	.probe		= mc3230_probe,
 	.remove		= mc3230_remove,
diff --git a/drivers/iio/accel/mma7455.h b/drivers/iio/accel/mma7455.h
index 4e3fa988f690..1fcc4b64b3af 100644
--- a/drivers/iio/accel/mma7455.h
+++ b/drivers/iio/accel/mma7455.h
@@ -11,6 +11,6 @@ extern const struct regmap_config mma7455_core_regmap;
 
 int mma7455_core_probe(struct device *dev, struct regmap *regmap,
 		       const char *name);
-int mma7455_core_remove(struct device *dev);
+void mma7455_core_remove(struct device *dev);
 
 #endif
diff --git a/drivers/iio/accel/mma7455_core.c b/drivers/iio/accel/mma7455_core.c
index 8b5a6aff9bf4..a34195b3215d 100644
--- a/drivers/iio/accel/mma7455_core.c
+++ b/drivers/iio/accel/mma7455_core.c
@@ -52,6 +52,14 @@
 
 struct mma7455_data {
 	struct regmap *regmap;
+	/*
+	 * Used to reorganize data.  Will ensure correct alignment of
+	 * the timestamp if present
+	 */
+	struct {
+		__le16 channels[3];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 static int mma7455_drdy(struct mma7455_data *mma7455)
@@ -82,19 +90,19 @@ static irqreturn_t mma7455_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct mma7455_data *mma7455 = iio_priv(indio_dev);
-	u8 buf[16]; /* 3 x 16-bit channels + padding + ts */
 	int ret;
 
 	ret = mma7455_drdy(mma7455);
 	if (ret)
 		goto done;
 
-	ret = regmap_bulk_read(mma7455->regmap, MMA7455_REG_XOUTL, buf,
-			       sizeof(__le16) * 3);
+	ret = regmap_bulk_read(mma7455->regmap, MMA7455_REG_XOUTL,
+			       mma7455->scan.channels,
+			       sizeof(mma7455->scan.channels));
 	if (ret)
 		goto done;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &mma7455->scan,
 					   iio_get_time_ns(indio_dev));
 
 done:
@@ -126,7 +134,8 @@ static int mma7455_read_raw(struct iio_dev *indio_dev,
 		if (ret)
 			return ret;
 
-		*val = sign_extend32(le16_to_cpu(data), 9);
+		*val = sign_extend32(le16_to_cpu(data),
+				     chan->scan_type.realbits - 1);
 
 		return IIO_VAL_INT;
 
@@ -229,7 +238,7 @@ const struct regmap_config mma7455_core_regmap = {
 	.val_bits = 8,
 	.max_register = MMA7455_REG_TW,
 };
-EXPORT_SYMBOL_GPL(mma7455_core_regmap);
+EXPORT_SYMBOL_NS_GPL(mma7455_core_regmap, IIO_MMA7455);
 
 int mma7455_core_probe(struct device *dev, struct regmap *regmap,
 		       const char *name)
@@ -260,7 +269,6 @@ int mma7455_core_probe(struct device *dev, struct regmap *regmap,
 
 	indio_dev->info = &mma7455_info;
 	indio_dev->name = name;
-	indio_dev->dev.parent = dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mma7455_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mma7455_channels);
@@ -285,9 +293,9 @@ int mma7455_core_probe(struct device *dev, struct regmap *regmap,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(mma7455_core_probe);
+EXPORT_SYMBOL_NS_GPL(mma7455_core_probe, IIO_MMA7455);
 
-int mma7455_core_remove(struct device *dev)
+void mma7455_core_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct mma7455_data *mma7455 = iio_priv(indio_dev);
@@ -297,10 +305,8 @@ int mma7455_core_remove(struct device *dev)
 
 	regmap_write(mma7455->regmap, MMA7455_REG_MCTL,
 		     MMA7455_MCTL_MODE_STANDBY);
-
-	return 0;
 }
-EXPORT_SYMBOL_GPL(mma7455_core_remove);
+EXPORT_SYMBOL_NS_GPL(mma7455_core_remove, IIO_MMA7455);
 
 MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
 MODULE_DESCRIPTION("Freescale MMA7455L core accelerometer driver");
diff --git a/drivers/iio/accel/mma7455_i2c.c b/drivers/iio/accel/mma7455_i2c.c
index cddeaa9e230a..c63b321b01cd 100644
--- a/drivers/iio/accel/mma7455_i2c.c
+++ b/drivers/iio/accel/mma7455_i2c.c
@@ -26,9 +26,9 @@ static int mma7455_i2c_probe(struct i2c_client *i2c,
 	return mma7455_core_probe(&i2c->dev, regmap, name);
 }
 
-static int mma7455_i2c_remove(struct i2c_client *i2c)
+static void mma7455_i2c_remove(struct i2c_client *i2c)
 {
-	return mma7455_core_remove(&i2c->dev);
+	mma7455_core_remove(&i2c->dev);
 }
 
 static const struct i2c_device_id mma7455_i2c_ids[] = {
@@ -59,3 +59,4 @@ module_i2c_driver(mma7455_i2c_driver);
 MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
 MODULE_DESCRIPTION("Freescale MMA7455L I2C accelerometer driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MMA7455);
diff --git a/drivers/iio/accel/mma7455_spi.c b/drivers/iio/accel/mma7455_spi.c
index eb82cdfa8abc..fcdde2e8a84b 100644
--- a/drivers/iio/accel/mma7455_spi.c
+++ b/drivers/iio/accel/mma7455_spi.c
@@ -22,9 +22,9 @@ static int mma7455_spi_probe(struct spi_device *spi)
 	return mma7455_core_probe(&spi->dev, regmap, id->name);
 }
 
-static int mma7455_spi_remove(struct spi_device *spi)
+static void mma7455_spi_remove(struct spi_device *spi)
 {
-	return mma7455_core_remove(&spi->dev);
+	mma7455_core_remove(&spi->dev);
 }
 
 static const struct spi_device_id mma7455_spi_ids[] = {
@@ -47,3 +47,4 @@ module_spi_driver(mma7455_spi_driver);
 MODULE_AUTHOR("Joachim Eastwood <manabian@gmail.com>");
 MODULE_DESCRIPTION("Freescale MMA7455L SPI accelerometer driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MMA7455);
diff --git a/drivers/iio/accel/mma7660.c b/drivers/iio/accel/mma7660.c
index 7faf6d8657ae..85829990bbad 100644
--- a/drivers/iio/accel/mma7660.c
+++ b/drivers/iio/accel/mma7660.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Freescale MMA7660FC 3-Axis Accelerometer
  *
  * Copyright (c) 2016, Intel Corporation.
@@ -7,8 +7,8 @@
  * IIO driver for Freescale MMA7660FC; 7-bit I2C address: 0x4c.
  */
 
-#include <linux/acpi.h>
 #include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -188,7 +188,6 @@ static int mma7660_probe(struct i2c_client *client,
 	mutex_init(&data->lock);
 	data->mode = MMA7660_MODE_STANDBY;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &mma7660_info;
 	indio_dev->name = MMA7660_DRIVER_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -208,16 +207,19 @@ static int mma7660_probe(struct i2c_client *client,
 	return ret;
 }
 
-static int mma7660_remove(struct i2c_client *client)
+static void mma7660_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 
-	return mma7660_set_mode(iio_priv(indio_dev), MMA7660_MODE_STANDBY);
+	ret = mma7660_set_mode(iio_priv(indio_dev), MMA7660_MODE_STANDBY);
+	if (ret)
+		dev_warn(&client->dev, "Failed to put device in stand-by mode (%pe), ignoring\n",
+			 ERR_PTR(ret));
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int mma7660_suspend(struct device *dev)
 {
 	struct mma7660_data *data;
@@ -236,12 +238,8 @@ static int mma7660_resume(struct device *dev)
 	return mma7660_set_mode(data, MMA7660_MODE_ACTIVE);
 }
 
-static SIMPLE_DEV_PM_OPS(mma7660_pm_ops, mma7660_suspend, mma7660_resume);
-
-#define MMA7660_PM_OPS (&mma7660_pm_ops)
-#else
-#define MMA7660_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(mma7660_pm_ops, mma7660_suspend,
+				mma7660_resume);
 
 static const struct i2c_device_id mma7660_i2c_id[] = {
 	{"mma7660", 0},
@@ -265,9 +263,9 @@ MODULE_DEVICE_TABLE(acpi, mma7660_acpi_id);
 static struct i2c_driver mma7660_driver = {
 	.driver = {
 		.name = "mma7660",
-		.pm = MMA7660_PM_OPS,
+		.pm = pm_sleep_ptr(&mma7660_pm_ops),
 		.of_match_table = mma7660_of_match,
-		.acpi_match_table = ACPI_PTR(mma7660_acpi_id),
+		.acpi_match_table = mma7660_acpi_id,
 	},
 	.probe		= mma7660_probe,
 	.remove		= mma7660_remove,
diff --git a/drivers/iio/accel/mma8452.c b/drivers/iio/accel/mma8452.c
index 00e100fc845a..3ba28c2ff68a 100644
--- a/drivers/iio/accel/mma8452.c
+++ b/drivers/iio/accel/mma8452.c
@@ -58,7 +58,7 @@
 #define MMA8452_FF_MT_THS			0x17
 #define  MMA8452_FF_MT_THS_MASK			0x7f
 #define MMA8452_FF_MT_COUNT			0x18
-#define MMA8452_FF_MT_CHAN_SHIFT	3
+#define MMA8452_FF_MT_CHAN_SHIFT		3
 #define MMA8452_TRANSIENT_CFG			0x1d
 #define  MMA8452_TRANSIENT_CFG_CHAN(chan)	BIT(chan + 1)
 #define  MMA8452_TRANSIENT_CFG_HPF_BYP		BIT(0)
@@ -70,7 +70,7 @@
 #define MMA8452_TRANSIENT_THS			0x1f
 #define  MMA8452_TRANSIENT_THS_MASK		GENMASK(6, 0)
 #define MMA8452_TRANSIENT_COUNT			0x20
-#define MMA8452_TRANSIENT_CHAN_SHIFT 1
+#define MMA8452_TRANSIENT_CHAN_SHIFT		1
 #define MMA8452_CTRL_REG1			0x2a
 #define  MMA8452_CTRL_ACTIVE			BIT(0)
 #define  MMA8452_CTRL_DR_MASK			GENMASK(5, 3)
@@ -104,12 +104,19 @@
 struct mma8452_data {
 	struct i2c_client *client;
 	struct mutex lock;
+	struct iio_mount_matrix orientation;
 	u8 ctrl_reg1;
 	u8 data_cfg;
 	const struct mma_chip_info *chip_info;
 	int sleep_val;
 	struct regulator *vdd_reg;
 	struct regulator *vddio_reg;
+
+	/* Ensure correct alignment of time stamp when present */
+	struct {
+		__be16 channels[3];
+		s64 ts __aligned(8);
+	} buffer;
 };
 
  /**
@@ -128,37 +135,38 @@ struct mma8452_data {
   * used for different chips and the relevant registers are included here.
   */
 struct mma8452_event_regs {
-		u8 ev_cfg;
-		u8 ev_cfg_ele;
-		u8 ev_cfg_chan_shift;
-		u8 ev_src;
-		u8 ev_ths;
-		u8 ev_ths_mask;
-		u8 ev_count;
+	u8 ev_cfg;
+	u8 ev_cfg_ele;
+	u8 ev_cfg_chan_shift;
+	u8 ev_src;
+	u8 ev_ths;
+	u8 ev_ths_mask;
+	u8 ev_count;
 };
 
 static const struct mma8452_event_regs ff_mt_ev_regs = {
-		.ev_cfg = MMA8452_FF_MT_CFG,
-		.ev_cfg_ele = MMA8452_FF_MT_CFG_ELE,
-		.ev_cfg_chan_shift = MMA8452_FF_MT_CHAN_SHIFT,
-		.ev_src = MMA8452_FF_MT_SRC,
-		.ev_ths = MMA8452_FF_MT_THS,
-		.ev_ths_mask = MMA8452_FF_MT_THS_MASK,
-		.ev_count = MMA8452_FF_MT_COUNT
+	.ev_cfg = MMA8452_FF_MT_CFG,
+	.ev_cfg_ele = MMA8452_FF_MT_CFG_ELE,
+	.ev_cfg_chan_shift = MMA8452_FF_MT_CHAN_SHIFT,
+	.ev_src = MMA8452_FF_MT_SRC,
+	.ev_ths = MMA8452_FF_MT_THS,
+	.ev_ths_mask = MMA8452_FF_MT_THS_MASK,
+	.ev_count = MMA8452_FF_MT_COUNT
 };
 
 static const struct mma8452_event_regs trans_ev_regs = {
-		.ev_cfg = MMA8452_TRANSIENT_CFG,
-		.ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE,
-		.ev_cfg_chan_shift = MMA8452_TRANSIENT_CHAN_SHIFT,
-		.ev_src = MMA8452_TRANSIENT_SRC,
-		.ev_ths = MMA8452_TRANSIENT_THS,
-		.ev_ths_mask = MMA8452_TRANSIENT_THS_MASK,
-		.ev_count = MMA8452_TRANSIENT_COUNT,
+	.ev_cfg = MMA8452_TRANSIENT_CFG,
+	.ev_cfg_ele = MMA8452_TRANSIENT_CFG_ELE,
+	.ev_cfg_chan_shift = MMA8452_TRANSIENT_CHAN_SHIFT,
+	.ev_src = MMA8452_TRANSIENT_SRC,
+	.ev_ths = MMA8452_TRANSIENT_THS,
+	.ev_ths_mask = MMA8452_TRANSIENT_THS_MASK,
+	.ev_count = MMA8452_TRANSIENT_COUNT,
 };
 
 /**
  * struct mma_chip_info - chip specific data
+ * @name:			part number of device reported via 'name' attr
  * @chip_id:			WHO_AM_I register's value
  * @channels:			struct iio_chan_spec matching the device's
  *				capabilities
@@ -170,6 +178,7 @@ static const struct mma8452_event_regs trans_ev_regs = {
  * @enabled_events:		event flags enabled and handled by this driver
  */
 struct mma_chip_info {
+	const char *name;
 	u8 chip_id;
 	const struct iio_chan_spec *channels;
 	int num_channels;
@@ -215,7 +224,7 @@ static int mma8452_set_runtime_pm_state(struct i2c_client *client, bool on)
 	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(&client->dev);
+		ret = pm_runtime_resume_and_get(&client->dev);
 	} else {
 		pm_runtime_mark_last_busy(&client->dev);
 		ret = pm_runtime_put_autosuspend(&client->dev);
@@ -224,8 +233,6 @@ static int mma8452_set_runtime_pm_state(struct i2c_client *client, bool on)
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"failed to change power state to %d\n", on);
-		if (on)
-			pm_runtime_put_noidle(&client->dev);
 
 		return ret;
 	}
@@ -375,8 +382,8 @@ static ssize_t mma8452_show_scale_avail(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
 {
-	struct mma8452_data *data = iio_priv(i2c_get_clientdata(
-					     to_i2c_client(dev)));
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct mma8452_data *data = iio_priv(indio_dev);
 
 	return mma8452_show_int_plus_micros(buf, data->chip_info->mma_scales,
 		ARRAY_SIZE(data->chip_info->mma_scales));
@@ -1049,7 +1056,7 @@ static irqreturn_t mma8452_interrupt(int irq, void *p)
 {
 	struct iio_dev *indio_dev = p;
 	struct mma8452_data *data = iio_priv(indio_dev);
-	int ret = IRQ_NONE;
+	irqreturn_t ret = IRQ_NONE;
 	int src;
 
 	src = i2c_smbus_read_byte_data(data->client, MMA8452_INT_SRC);
@@ -1091,14 +1098,13 @@ static irqreturn_t mma8452_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct mma8452_data *data = iio_priv(indio_dev);
-	u8 buffer[16]; /* 3 16-bit channels + padding + ts */
 	int ret;
 
-	ret = mma8452_read(data, (__be16 *)buffer);
+	ret = mma8452_read(data, data->buffer.channels);
 	if (ret < 0)
 		goto done;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,
 					   iio_get_time_ns(indio_dev));
 
 done:
@@ -1182,10 +1188,24 @@ static struct attribute *mma8452_event_attributes[] = {
 	NULL,
 };
 
-static struct attribute_group mma8452_event_attribute_group = {
+static const struct attribute_group mma8452_event_attribute_group = {
 	.attrs = mma8452_event_attributes,
 };
 
+static const struct iio_mount_matrix *
+mma8452_get_mount_matrix(const struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan)
+{
+	struct mma8452_data *data = iio_priv(indio_dev);
+
+	return &data->orientation;
+}
+
+static const struct iio_chan_spec_ext_info mma8452_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_TYPE, mma8452_get_mount_matrix),
+	{ }
+};
+
 #define MMA8452_FREEFALL_CHANNEL(modifier) { \
 	.type = IIO_ACCEL, \
 	.modified = 1, \
@@ -1224,6 +1244,7 @@ static struct attribute_group mma8452_event_attribute_group = {
 	}, \
 	.event_spec = mma8452_transient_event, \
 	.num_event_specs = ARRAY_SIZE(mma8452_transient_event), \
+	.ext_info = mma8452_ext_info, \
 }
 
 #define MMA8652_CHANNEL(axis, idx, bits) { \
@@ -1245,6 +1266,7 @@ static struct attribute_group mma8452_event_attribute_group = {
 	}, \
 	.event_spec = mma8452_motion_event, \
 	.num_event_specs = ARRAY_SIZE(mma8452_motion_event), \
+	.ext_info = mma8452_ext_info, \
 }
 
 static const struct iio_chan_spec mma8451_channels[] = {
@@ -1298,6 +1320,7 @@ enum {
 
 static const struct mma_chip_info mma_chip_info_table[] = {
 	[mma8451] = {
+		.name = "mma8451",
 		.chip_id = MMA8451_DEVICE_ID,
 		.channels = mma8451_channels,
 		.num_channels = ARRAY_SIZE(mma8451_channels),
@@ -1322,6 +1345,7 @@ static const struct mma_chip_info mma_chip_info_table[] = {
 					MMA8452_INT_FF_MT,
 	},
 	[mma8452] = {
+		.name = "mma8452",
 		.chip_id = MMA8452_DEVICE_ID,
 		.channels = mma8452_channels,
 		.num_channels = ARRAY_SIZE(mma8452_channels),
@@ -1338,6 +1362,7 @@ static const struct mma_chip_info mma_chip_info_table[] = {
 					MMA8452_INT_FF_MT,
 	},
 	[mma8453] = {
+		.name = "mma8453",
 		.chip_id = MMA8453_DEVICE_ID,
 		.channels = mma8453_channels,
 		.num_channels = ARRAY_SIZE(mma8453_channels),
@@ -1354,6 +1379,7 @@ static const struct mma_chip_info mma_chip_info_table[] = {
 					MMA8452_INT_FF_MT,
 	},
 	[mma8652] = {
+		.name = "mma8652",
 		.chip_id = MMA8652_DEVICE_ID,
 		.channels = mma8652_channels,
 		.num_channels = ARRAY_SIZE(mma8652_channels),
@@ -1363,6 +1389,7 @@ static const struct mma_chip_info mma_chip_info_table[] = {
 		.enabled_events = MMA8452_INT_FF_MT,
 	},
 	[mma8653] = {
+		.name = "mma8653",
 		.chip_id = MMA8653_DEVICE_ID,
 		.channels = mma8653_channels,
 		.num_channels = ARRAY_SIZE(mma8653_channels),
@@ -1377,6 +1404,7 @@ static const struct mma_chip_info mma_chip_info_table[] = {
 		.enabled_events = MMA8452_INT_FF_MT,
 	},
 	[fxls8471] = {
+		.name = "fxls8471",
 		.chip_id = FXLS8471_DEVICE_ID,
 		.channels = mma8451_channels,
 		.num_channels = ARRAY_SIZE(mma8451_channels),
@@ -1456,11 +1484,10 @@ static int mma8452_trigger_setup(struct iio_dev *indio_dev)
 
 	trig = devm_iio_trigger_alloc(&data->client->dev, "%s-dev%d",
 				      indio_dev->name,
-				      indio_dev->id);
+				      iio_device_id(indio_dev));
 	if (!trig)
 		return -ENOMEM;
 
-	trig->dev.parent = &data->client->dev;
 	trig->ops = &mma8452_trigger_ops;
 	iio_trigger_set_drvdata(trig, indio_dev);
 
@@ -1468,7 +1495,7 @@ static int mma8452_trigger_setup(struct iio_dev *indio_dev)
 	if (ret)
 		return ret;
 
-	indio_dev->trig = trig;
+	indio_dev->trig = iio_trigger_get(trig);
 
 	return 0;
 }
@@ -1484,10 +1511,14 @@ static int mma8452_reset(struct i2c_client *client)
 	int i;
 	int ret;
 
-	ret = i2c_smbus_write_byte_data(client,	MMA8452_CTRL_REG2,
+	/*
+	 * Find on fxls8471, after config reset bit, it reset immediately,
+	 * and will not give ACK, so here do not check the return value.
+	 * The following code will read the reset register, and check whether
+	 * this reset works.
+	 */
+	i2c_smbus_write_byte_data(client, MMA8452_CTRL_REG2,
 					MMA8452_CTRL_REG2_RST);
-	if (ret < 0)
-		return ret;
 
 	for (i = 0; i < 10; i++) {
 		usleep_range(100, 200);
@@ -1520,13 +1551,6 @@ static int mma8452_probe(struct i2c_client *client,
 	struct mma8452_data *data;
 	struct iio_dev *indio_dev;
 	int ret;
-	const struct of_device_id *match;
-
-	match = of_match_device(mma8452_dt_ids, &client->dev);
-	if (!match) {
-		dev_err(&client->dev, "unknown device model\n");
-		return -ENODEV;
-	}
 
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (!indio_dev)
@@ -1535,25 +1559,30 @@ static int mma8452_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	data->client = client;
 	mutex_init(&data->lock);
-	data->chip_info = match->data;
 
-	data->vdd_reg = devm_regulator_get(&client->dev, "vdd");
-	if (IS_ERR(data->vdd_reg)) {
-		if (PTR_ERR(data->vdd_reg) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-
-		dev_err(&client->dev, "failed to get VDD regulator!\n");
-		return PTR_ERR(data->vdd_reg);
+	data->chip_info = device_get_match_data(&client->dev);
+	if (!data->chip_info) {
+		if (id) {
+			data->chip_info = &mma_chip_info_table[id->driver_data];
+		} else {
+			dev_err(&client->dev, "unknown device model\n");
+			return -ENODEV;
+		}
 	}
 
-	data->vddio_reg = devm_regulator_get(&client->dev, "vddio");
-	if (IS_ERR(data->vddio_reg)) {
-		if (PTR_ERR(data->vddio_reg) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
+	ret = iio_read_mount_matrix(&client->dev, &data->orientation);
+	if (ret)
+		return ret;
 
-		dev_err(&client->dev, "failed to get VDDIO regulator!\n");
-		return PTR_ERR(data->vddio_reg);
-	}
+	data->vdd_reg = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(data->vdd_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vdd_reg),
+				     "failed to get VDD regulator!\n");
+
+	data->vddio_reg = devm_regulator_get(&client->dev, "vddio");
+	if (IS_ERR(data->vddio_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vddio_reg),
+				     "failed to get VDDIO regulator!\n");
 
 	ret = regulator_enable(data->vdd_reg);
 	if (ret) {
@@ -1580,19 +1609,18 @@ static int mma8452_probe(struct i2c_client *client,
 	case FXLS8471_DEVICE_ID:
 		if (ret == data->chip_info->chip_id)
 			break;
-		/* fall through */
+		fallthrough;
 	default:
 		ret = -ENODEV;
 		goto disable_regulators;
 	}
 
 	dev_info(&client->dev, "registering %s accelerometer; ID 0x%x\n",
-		 match->compatible, data->chip_info->chip_id);
+		 data->chip_info->name, data->chip_info->chip_id);
 
 	i2c_set_clientdata(client, indio_dev);
 	indio_dev->info = &mma8452_info;
-	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
+	indio_dev->name = data->chip_info->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = data->chip_info->channels;
 	indio_dev->num_channels = data->chip_info->num_channels;
@@ -1685,10 +1713,13 @@ static int mma8452_probe(struct i2c_client *client,
 
 	ret = mma8452_set_freefall_mode(data, false);
 	if (ret < 0)
-		goto buffer_cleanup;
+		goto unregister_device;
 
 	return 0;
 
+unregister_device:
+	iio_device_unregister(indio_dev);
+
 buffer_cleanup:
 	iio_triggered_buffer_cleanup(indio_dev);
 
@@ -1704,7 +1735,7 @@ disable_regulator_vdd:
 	return ret;
 }
 
-static int mma8452_remove(struct i2c_client *client)
+static void mma8452_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mma8452_data *data = iio_priv(indio_dev);
@@ -1713,7 +1744,6 @@ static int mma8452_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
 	iio_triggered_buffer_cleanup(indio_dev);
 	mma8452_trigger_cleanup(indio_dev);
@@ -1721,8 +1751,6 @@ static int mma8452_remove(struct i2c_client *client)
 
 	regulator_disable(data->vddio_reg);
 	regulator_disable(data->vdd_reg);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM
@@ -1815,7 +1843,7 @@ MODULE_DEVICE_TABLE(i2c, mma8452_id);
 static struct i2c_driver mma8452_driver = {
 	.driver = {
 		.name	= "mma8452",
-		.of_match_table = of_match_ptr(mma8452_dt_ids),
+		.of_match_table = mma8452_dt_ids,
 		.pm	= &mma8452_pm_ops,
 	},
 	.probe = mma8452_probe,
diff --git a/drivers/iio/accel/mma9551.c b/drivers/iio/accel/mma9551.c
index 99e4a21ca942..f7a793f4a8e3 100644
--- a/drivers/iio/accel/mma9551.c
+++ b/drivers/iio/accel/mma9551.c
@@ -473,7 +473,6 @@ static int mma9551_probe(struct i2c_client *client,
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = mma9551_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mma9551_channels);
 	indio_dev->name = name;
@@ -496,18 +495,21 @@ static int mma9551_probe(struct i2c_client *client,
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev, "unable to register iio device\n");
-		goto out_poweroff;
+		goto err_pm_cleanup;
 	}
 
 	return 0;
 
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(&client->dev);
+	pm_runtime_disable(&client->dev);
 out_poweroff:
 	mma9551_set_device_state(client, false);
 
 	return ret;
 }
 
-static int mma9551_remove(struct i2c_client *client)
+static void mma9551_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mma9551_data *data = iio_priv(indio_dev);
@@ -516,16 +518,12 @@ static int mma9551_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
 	mutex_lock(&data->mutex);
 	mma9551_set_device_state(data->client, false);
 	mutex_unlock(&data->mutex);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM
 static int mma9551_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -557,9 +555,7 @@ static int mma9551_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-#ifdef CONFIG_PM_SLEEP
 static int mma9551_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -585,12 +581,10 @@ static int mma9551_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
 static const struct dev_pm_ops mma9551_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mma9551_suspend, mma9551_resume)
-	SET_RUNTIME_PM_OPS(mma9551_runtime_suspend,
-			   mma9551_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(mma9551_suspend, mma9551_resume)
+	RUNTIME_PM_OPS(mma9551_runtime_suspend, mma9551_runtime_resume, NULL)
 };
 
 static const struct acpi_device_id mma9551_acpi_match[] = {
@@ -611,7 +605,7 @@ static struct i2c_driver mma9551_driver = {
 	.driver = {
 		   .name = MMA9551_DRV_NAME,
 		   .acpi_match_table = ACPI_PTR(mma9551_acpi_match),
-		   .pm = &mma9551_pm_ops,
+		   .pm = pm_ptr(&mma9551_pm_ops),
 		   },
 	.probe = mma9551_probe,
 	.remove = mma9551_remove,
@@ -624,3 +618,4 @@ MODULE_AUTHOR("Irina Tirdea <irina.tirdea@intel.com>");
 MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("MMA9551L motion-sensing platform driver");
+MODULE_IMPORT_NS(IIO_MMA9551);
diff --git a/drivers/iio/accel/mma9551_core.c b/drivers/iio/accel/mma9551_core.c
index 666e7a04a7d7..64ca7d7a9673 100644
--- a/drivers/iio/accel/mma9551_core.c
+++ b/drivers/iio/accel/mma9551_core.c
@@ -219,7 +219,7 @@ int mma9551_read_config_byte(struct i2c_client *client, u8 app_id,
 	return mma9551_transfer(client, app_id, MMA9551_CMD_READ_CONFIG,
 				reg, NULL, 0, val, 1);
 }
-EXPORT_SYMBOL(mma9551_read_config_byte);
+EXPORT_SYMBOL_NS(mma9551_read_config_byte, IIO_MMA9551);
 
 /**
  * mma9551_write_config_byte() - write 1 configuration byte
@@ -244,7 +244,7 @@ int mma9551_write_config_byte(struct i2c_client *client, u8 app_id,
 	return mma9551_transfer(client, app_id, MMA9551_CMD_WRITE_CONFIG, reg,
 				&val, 1, NULL, 0);
 }
-EXPORT_SYMBOL(mma9551_write_config_byte);
+EXPORT_SYMBOL_NS(mma9551_write_config_byte, IIO_MMA9551);
 
 /**
  * mma9551_read_status_byte() - read 1 status byte
@@ -269,7 +269,7 @@ int mma9551_read_status_byte(struct i2c_client *client, u8 app_id,
 	return mma9551_transfer(client, app_id, MMA9551_CMD_READ_STATUS,
 				reg, NULL, 0, val, 1);
 }
-EXPORT_SYMBOL(mma9551_read_status_byte);
+EXPORT_SYMBOL_NS(mma9551_read_status_byte, IIO_MMA9551);
 
 /**
  * mma9551_read_config_word() - read 1 config word
@@ -300,7 +300,7 @@ int mma9551_read_config_word(struct i2c_client *client, u8 app_id,
 
 	return ret;
 }
-EXPORT_SYMBOL(mma9551_read_config_word);
+EXPORT_SYMBOL_NS(mma9551_read_config_word, IIO_MMA9551);
 
 /**
  * mma9551_write_config_word() - write 1 config word
@@ -327,7 +327,7 @@ int mma9551_write_config_word(struct i2c_client *client, u8 app_id,
 	return mma9551_transfer(client, app_id, MMA9551_CMD_WRITE_CONFIG, reg,
 				(u8 *)&v, 2, NULL, 0);
 }
-EXPORT_SYMBOL(mma9551_write_config_word);
+EXPORT_SYMBOL_NS(mma9551_write_config_word, IIO_MMA9551);
 
 /**
  * mma9551_read_status_word() - read 1 status word
@@ -358,7 +358,7 @@ int mma9551_read_status_word(struct i2c_client *client, u8 app_id,
 
 	return ret;
 }
-EXPORT_SYMBOL(mma9551_read_status_word);
+EXPORT_SYMBOL_NS(mma9551_read_status_word, IIO_MMA9551);
 
 /**
  * mma9551_read_config_words() - read multiple config words
@@ -397,7 +397,7 @@ int mma9551_read_config_words(struct i2c_client *client, u8 app_id,
 
 	return 0;
 }
-EXPORT_SYMBOL(mma9551_read_config_words);
+EXPORT_SYMBOL_NS(mma9551_read_config_words, IIO_MMA9551);
 
 /**
  * mma9551_read_status_words() - read multiple status words
@@ -436,7 +436,7 @@ int mma9551_read_status_words(struct i2c_client *client, u8 app_id,
 
 	return 0;
 }
-EXPORT_SYMBOL(mma9551_read_status_words);
+EXPORT_SYMBOL_NS(mma9551_read_status_words, IIO_MMA9551);
 
 /**
  * mma9551_write_config_words() - write multiple config words
@@ -471,7 +471,7 @@ int mma9551_write_config_words(struct i2c_client *client, u8 app_id,
 	return mma9551_transfer(client, app_id, MMA9551_CMD_WRITE_CONFIG,
 				reg, (u8 *)be_buf, len * sizeof(u16), NULL, 0);
 }
-EXPORT_SYMBOL(mma9551_write_config_words);
+EXPORT_SYMBOL_NS(mma9551_write_config_words, IIO_MMA9551);
 
 /**
  * mma9551_update_config_bits() - update bits in register
@@ -507,7 +507,7 @@ int mma9551_update_config_bits(struct i2c_client *client, u8 app_id,
 
 	return mma9551_write_config_byte(client, app_id, reg, tmp);
 }
-EXPORT_SYMBOL(mma9551_update_config_bits);
+EXPORT_SYMBOL_NS(mma9551_update_config_bits, IIO_MMA9551);
 
 /**
  * mma9551_gpio_config() - configure gpio
@@ -586,7 +586,7 @@ int mma9551_gpio_config(struct i2c_client *client, enum mma9551_gpio_pin pin,
 
 	return ret;
 }
-EXPORT_SYMBOL(mma9551_gpio_config);
+EXPORT_SYMBOL_NS(mma9551_gpio_config, IIO_MMA9551);
 
 /**
  * mma9551_read_version() - read device version information
@@ -616,7 +616,7 @@ int mma9551_read_version(struct i2c_client *client)
 
 	return 0;
 }
-EXPORT_SYMBOL(mma9551_read_version);
+EXPORT_SYMBOL_NS(mma9551_read_version, IIO_MMA9551);
 
 /**
  * mma9551_set_device_state() - sets HW power mode
@@ -646,7 +646,7 @@ int mma9551_set_device_state(struct i2c_client *client, bool enable)
 					  MMA9551_SLEEP_CFG_FLEEN :
 					  MMA9551_SLEEP_CFG_SNCEN);
 }
-EXPORT_SYMBOL(mma9551_set_device_state);
+EXPORT_SYMBOL_NS(mma9551_set_device_state, IIO_MMA9551);
 
 /**
  * mma9551_set_power_state() - sets runtime PM state
@@ -664,7 +664,7 @@ int mma9551_set_power_state(struct i2c_client *client, bool on)
 	int ret;
 
 	if (on)
-		ret = pm_runtime_get_sync(&client->dev);
+		ret = pm_runtime_resume_and_get(&client->dev);
 	else {
 		pm_runtime_mark_last_busy(&client->dev);
 		ret = pm_runtime_put_autosuspend(&client->dev);
@@ -673,8 +673,6 @@ int mma9551_set_power_state(struct i2c_client *client, bool on)
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"failed to change power state to %d\n", on);
-		if (on)
-			pm_runtime_put_noidle(&client->dev);
 
 		return ret;
 	}
@@ -682,7 +680,7 @@ int mma9551_set_power_state(struct i2c_client *client, bool on)
 
 	return 0;
 }
-EXPORT_SYMBOL(mma9551_set_power_state);
+EXPORT_SYMBOL_NS(mma9551_set_power_state, IIO_MMA9551);
 
 /**
  * mma9551_sleep() - sleep
@@ -701,7 +699,7 @@ void mma9551_sleep(int freq)
 	else
 		msleep_interruptible(sleep_val);
 }
-EXPORT_SYMBOL(mma9551_sleep);
+EXPORT_SYMBOL_NS(mma9551_sleep, IIO_MMA9551);
 
 /**
  * mma9551_read_accel_chan() - read accelerometer channel
@@ -757,7 +755,7 @@ out_poweroff:
 	mma9551_set_power_state(client, false);
 	return ret;
 }
-EXPORT_SYMBOL(mma9551_read_accel_chan);
+EXPORT_SYMBOL_NS(mma9551_read_accel_chan, IIO_MMA9551);
 
 /**
  * mma9551_read_accel_scale() - read accelerometer scale
@@ -775,7 +773,7 @@ int mma9551_read_accel_scale(int *val, int *val2)
 
 	return IIO_VAL_INT_PLUS_MICRO;
 }
-EXPORT_SYMBOL(mma9551_read_accel_scale);
+EXPORT_SYMBOL_NS(mma9551_read_accel_scale, IIO_MMA9551);
 
 /**
  * mma9551_app_reset() - reset application
@@ -794,7 +792,7 @@ int mma9551_app_reset(struct i2c_client *client, u32 app_mask)
 					 MMA9551_RSC_OFFSET(app_mask),
 					 MMA9551_RSC_VAL(app_mask));
 }
-EXPORT_SYMBOL(mma9551_app_reset);
+EXPORT_SYMBOL_NS(mma9551_app_reset, IIO_MMA9551);
 
 MODULE_AUTHOR("Irina Tirdea <irina.tirdea@intel.com>");
 MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index 312070dcf035..2da0e005b13e 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -917,7 +917,7 @@ static const struct iio_enum mma9553_calibgender_enum = {
 
 static const struct iio_chan_spec_ext_info mma9553_ext_info[] = {
 	IIO_ENUM("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum),
-	IIO_ENUM_AVAILABLE("calibgender", &mma9553_calibgender_enum),
+	IIO_ENUM_AVAILABLE("calibgender", IIO_SHARED_BY_TYPE, &mma9553_calibgender_enum),
 	{},
 };
 
@@ -1103,7 +1103,6 @@ static int mma9553_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = mma9553_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mma9553_channels);
 	indio_dev->name = name;
@@ -1135,18 +1134,21 @@ static int mma9553_probe(struct i2c_client *client,
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev, "unable to register iio device\n");
-		goto out_poweroff;
+		goto err_pm_cleanup;
 	}
 
 	dev_dbg(&indio_dev->dev, "Registered device %s\n", name);
 	return 0;
 
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(&client->dev);
+	pm_runtime_disable(&client->dev);
 out_poweroff:
 	mma9551_set_device_state(client, false);
 	return ret;
 }
 
-static int mma9553_remove(struct i2c_client *client)
+static void mma9553_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mma9553_data *data = iio_priv(indio_dev);
@@ -1155,16 +1157,12 @@ static int mma9553_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
 	mutex_lock(&data->mutex);
 	mma9551_set_device_state(data->client, false);
 	mutex_unlock(&data->mutex);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM
 static int mma9553_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -1196,9 +1194,7 @@ static int mma9553_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-#ifdef CONFIG_PM_SLEEP
 static int mma9553_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -1224,12 +1220,10 @@ static int mma9553_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
 static const struct dev_pm_ops mma9553_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mma9553_suspend, mma9553_resume)
-	SET_RUNTIME_PM_OPS(mma9553_runtime_suspend,
-			   mma9553_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(mma9553_suspend, mma9553_resume)
+	RUNTIME_PM_OPS(mma9553_runtime_suspend, mma9553_runtime_resume, NULL)
 };
 
 static const struct acpi_device_id mma9553_acpi_match[] = {
@@ -1250,7 +1244,7 @@ static struct i2c_driver mma9553_driver = {
 	.driver = {
 		   .name = MMA9553_DRV_NAME,
 		   .acpi_match_table = ACPI_PTR(mma9553_acpi_match),
-		   .pm = &mma9553_pm_ops,
+		   .pm = pm_ptr(&mma9553_pm_ops),
 		   },
 	.probe = mma9553_probe,
 	.remove = mma9553_remove,
@@ -1262,3 +1256,4 @@ module_i2c_driver(mma9553_driver);
 MODULE_AUTHOR("Irina Tirdea <irina.tirdea@intel.com>");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("MMA9553L pedometer platform driver");
+MODULE_IMPORT_NS(IIO_MMA9551);
diff --git a/drivers/iio/accel/msa311.c b/drivers/iio/accel/msa311.c
new file mode 100644
index 000000000000..2fded3759171
--- /dev/null
+++ b/drivers/iio/accel/msa311.c
@@ -0,0 +1,1321 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * MEMSensing digital 3-Axis accelerometer
+ *
+ * MSA311 is a tri-axial, low-g accelerometer with I2C digital output for
+ * sensitivity consumer applications. It has dynamic user-selectable full
+ * scales range of +-2g/+-4g/+-8g/+-16g and allows acceleration measurements
+ * with output data rates from 1Hz to 1000Hz.
+ *
+ * MSA311 is available in an ultra small (2mm x 2mm, height 0.95mm) LGA package
+ * and is guaranteed to operate over -40C to +85C.
+ *
+ * This driver supports following MSA311 features:
+ *     - IIO interface
+ *     - Different power modes: NORMAL, SUSPEND
+ *     - ODR (Output Data Rate) selection
+ *     - Scale selection
+ *     - IIO triggered buffer
+ *     - NEW_DATA interrupt + trigger
+ *
+ * Below features to be done:
+ *     - Motion Events: ACTIVE, TAP, ORIENT, FREEFALL
+ *     - Low Power mode
+ *
+ * Copyright (c) 2022, SberDevices. All Rights Reserved.
+ *
+ * Author: Dmitry Rokosov <ddrokosov@sberdevices.ru>
+ */
+
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/string_helpers.h>
+#include <linux/units.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define MSA311_SOFT_RESET_REG     0x00
+#define MSA311_PARTID_REG         0x01
+#define MSA311_ACC_X_REG          0x02
+#define MSA311_ACC_Y_REG          0x04
+#define MSA311_ACC_Z_REG          0x06
+#define MSA311_MOTION_INT_REG     0x09
+#define MSA311_DATA_INT_REG       0x0A
+#define MSA311_TAP_ACTIVE_STS_REG 0x0B
+#define MSA311_ORIENT_STS_REG     0x0C
+#define MSA311_RANGE_REG          0x0F
+#define MSA311_ODR_REG            0x10
+#define MSA311_PWR_MODE_REG       0x11
+#define MSA311_SWAP_POLARITY_REG  0x12
+#define MSA311_INT_SET_0_REG      0x16
+#define MSA311_INT_SET_1_REG      0x17
+#define MSA311_INT_MAP_0_REG      0x19
+#define MSA311_INT_MAP_1_REG      0x1A
+#define MSA311_INT_CONFIG_REG     0x20
+#define MSA311_INT_LATCH_REG      0x21
+#define MSA311_FREEFALL_DUR_REG   0x22
+#define MSA311_FREEFALL_TH_REG    0x23
+#define MSA311_FREEFALL_HY_REG    0x24
+#define MSA311_ACTIVE_DUR_REG     0x27
+#define MSA311_ACTIVE_TH_REG      0x28
+#define MSA311_TAP_DUR_REG        0x2A
+#define MSA311_TAP_TH_REG         0x2B
+#define MSA311_ORIENT_HY_REG      0x2C
+#define MSA311_Z_BLOCK_REG        0x2D
+#define MSA311_OFFSET_X_REG       0x38
+#define MSA311_OFFSET_Y_REG       0x39
+#define MSA311_OFFSET_Z_REG       0x3A
+
+enum msa311_fields {
+	/* Soft_Reset */
+	F_SOFT_RESET_I2C, F_SOFT_RESET_SPI,
+	/* Motion_Interrupt */
+	F_ORIENT_INT, F_S_TAP_INT, F_D_TAP_INT, F_ACTIVE_INT, F_FREEFALL_INT,
+	/* Data_Interrupt */
+	F_NEW_DATA_INT,
+	/* Tap_Active_Status */
+	F_TAP_SIGN, F_TAP_FIRST_X, F_TAP_FIRST_Y, F_TAP_FIRST_Z, F_ACTV_SIGN,
+	F_ACTV_FIRST_X, F_ACTV_FIRST_Y, F_ACTV_FIRST_Z,
+	/* Orientation_Status */
+	F_ORIENT_Z, F_ORIENT_X_Y,
+	/* Range */
+	F_FS,
+	/* ODR */
+	F_X_AXIS_DIS, F_Y_AXIS_DIS, F_Z_AXIS_DIS, F_ODR,
+	/* Power Mode/Bandwidth */
+	F_PWR_MODE, F_LOW_POWER_BW,
+	/* Swap_Polarity */
+	F_X_POLARITY, F_Y_POLARITY, F_Z_POLARITY, F_X_Y_SWAP,
+	/* Int_Set_0 */
+	F_ORIENT_INT_EN, F_S_TAP_INT_EN, F_D_TAP_INT_EN, F_ACTIVE_INT_EN_Z,
+	F_ACTIVE_INT_EN_Y, F_ACTIVE_INT_EN_X,
+	/* Int_Set_1 */
+	F_NEW_DATA_INT_EN, F_FREEFALL_INT_EN,
+	/* Int_Map_0 */
+	F_INT1_ORIENT, F_INT1_S_TAP, F_INT1_D_TAP, F_INT1_ACTIVE,
+	F_INT1_FREEFALL,
+	/* Int_Map_1 */
+	F_INT1_NEW_DATA,
+	/* Int_Config */
+	F_INT1_OD, F_INT1_LVL,
+	/* Int_Latch */
+	F_RESET_INT, F_LATCH_INT,
+	/* Freefall_Hy */
+	F_FREEFALL_MODE, F_FREEFALL_HY,
+	/* Active_Dur */
+	F_ACTIVE_DUR,
+	/* Tap_Dur */
+	F_TAP_QUIET, F_TAP_SHOCK, F_TAP_DUR,
+	/* Tap_Th */
+	F_TAP_TH,
+	/* Orient_Hy */
+	F_ORIENT_HYST, F_ORIENT_BLOCKING, F_ORIENT_MODE,
+	/* Z_Block */
+	F_Z_BLOCKING,
+	/* End of register map */
+	F_MAX_FIELDS,
+};
+
+static const struct reg_field msa311_reg_fields[] = {
+	/* Soft_Reset */
+	[F_SOFT_RESET_I2C] = REG_FIELD(MSA311_SOFT_RESET_REG, 2, 2),
+	[F_SOFT_RESET_SPI] = REG_FIELD(MSA311_SOFT_RESET_REG, 5, 5),
+	/* Motion_Interrupt */
+	[F_ORIENT_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 6, 6),
+	[F_S_TAP_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 5, 5),
+	[F_D_TAP_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 4, 4),
+	[F_ACTIVE_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 2, 2),
+	[F_FREEFALL_INT] = REG_FIELD(MSA311_MOTION_INT_REG, 0, 0),
+	/* Data_Interrupt */
+	[F_NEW_DATA_INT] = REG_FIELD(MSA311_DATA_INT_REG, 0, 0),
+	/* Tap_Active_Status */
+	[F_TAP_SIGN] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 7, 7),
+	[F_TAP_FIRST_X] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 6, 6),
+	[F_TAP_FIRST_Y] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 5, 5),
+	[F_TAP_FIRST_Z] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 4, 4),
+	[F_ACTV_SIGN] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 3, 3),
+	[F_ACTV_FIRST_X] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 2, 2),
+	[F_ACTV_FIRST_Y] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 1, 1),
+	[F_ACTV_FIRST_Z] = REG_FIELD(MSA311_TAP_ACTIVE_STS_REG, 0, 0),
+	/* Orientation_Status */
+	[F_ORIENT_Z] = REG_FIELD(MSA311_ORIENT_STS_REG, 6, 6),
+	[F_ORIENT_X_Y] = REG_FIELD(MSA311_ORIENT_STS_REG, 4, 5),
+	/* Range */
+	[F_FS] = REG_FIELD(MSA311_RANGE_REG, 0, 1),
+	/* ODR */
+	[F_X_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 7, 7),
+	[F_Y_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 6, 6),
+	[F_Z_AXIS_DIS] = REG_FIELD(MSA311_ODR_REG, 5, 5),
+	[F_ODR] = REG_FIELD(MSA311_ODR_REG, 0, 3),
+	/* Power Mode/Bandwidth */
+	[F_PWR_MODE] = REG_FIELD(MSA311_PWR_MODE_REG, 6, 7),
+	[F_LOW_POWER_BW] = REG_FIELD(MSA311_PWR_MODE_REG, 1, 4),
+	/* Swap_Polarity */
+	[F_X_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 3, 3),
+	[F_Y_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 2, 2),
+	[F_Z_POLARITY] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 1, 1),
+	[F_X_Y_SWAP] = REG_FIELD(MSA311_SWAP_POLARITY_REG, 0, 0),
+	/* Int_Set_0 */
+	[F_ORIENT_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 6, 6),
+	[F_S_TAP_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 5, 5),
+	[F_D_TAP_INT_EN] = REG_FIELD(MSA311_INT_SET_0_REG, 4, 4),
+	[F_ACTIVE_INT_EN_Z] = REG_FIELD(MSA311_INT_SET_0_REG, 2, 2),
+	[F_ACTIVE_INT_EN_Y] = REG_FIELD(MSA311_INT_SET_0_REG, 1, 1),
+	[F_ACTIVE_INT_EN_X] = REG_FIELD(MSA311_INT_SET_0_REG, 0, 0),
+	/* Int_Set_1 */
+	[F_NEW_DATA_INT_EN] = REG_FIELD(MSA311_INT_SET_1_REG, 4, 4),
+	[F_FREEFALL_INT_EN] = REG_FIELD(MSA311_INT_SET_1_REG, 3, 3),
+	/* Int_Map_0 */
+	[F_INT1_ORIENT] = REG_FIELD(MSA311_INT_MAP_0_REG, 6, 6),
+	[F_INT1_S_TAP] = REG_FIELD(MSA311_INT_MAP_0_REG, 5, 5),
+	[F_INT1_D_TAP] = REG_FIELD(MSA311_INT_MAP_0_REG, 4, 4),
+	[F_INT1_ACTIVE] = REG_FIELD(MSA311_INT_MAP_0_REG, 2, 2),
+	[F_INT1_FREEFALL] = REG_FIELD(MSA311_INT_MAP_0_REG, 0, 0),
+	/* Int_Map_1 */
+	[F_INT1_NEW_DATA] = REG_FIELD(MSA311_INT_MAP_1_REG, 0, 0),
+	/* Int_Config */
+	[F_INT1_OD] = REG_FIELD(MSA311_INT_CONFIG_REG, 1, 1),
+	[F_INT1_LVL] = REG_FIELD(MSA311_INT_CONFIG_REG, 0, 0),
+	/* Int_Latch */
+	[F_RESET_INT] = REG_FIELD(MSA311_INT_LATCH_REG, 7, 7),
+	[F_LATCH_INT] = REG_FIELD(MSA311_INT_LATCH_REG, 0, 3),
+	/* Freefall_Hy */
+	[F_FREEFALL_MODE] = REG_FIELD(MSA311_FREEFALL_HY_REG, 2, 2),
+	[F_FREEFALL_HY] = REG_FIELD(MSA311_FREEFALL_HY_REG, 0, 1),
+	/* Active_Dur */
+	[F_ACTIVE_DUR] = REG_FIELD(MSA311_ACTIVE_DUR_REG, 0, 1),
+	/* Tap_Dur */
+	[F_TAP_QUIET] = REG_FIELD(MSA311_TAP_DUR_REG, 7, 7),
+	[F_TAP_SHOCK] = REG_FIELD(MSA311_TAP_DUR_REG, 6, 6),
+	[F_TAP_DUR] = REG_FIELD(MSA311_TAP_DUR_REG, 0, 2),
+	/* Tap_Th */
+	[F_TAP_TH] = REG_FIELD(MSA311_TAP_TH_REG, 0, 4),
+	/* Orient_Hy */
+	[F_ORIENT_HYST] = REG_FIELD(MSA311_ORIENT_HY_REG, 4, 6),
+	[F_ORIENT_BLOCKING] = REG_FIELD(MSA311_ORIENT_HY_REG, 2, 3),
+	[F_ORIENT_MODE] = REG_FIELD(MSA311_ORIENT_HY_REG, 0, 1),
+	/* Z_Block */
+	[F_Z_BLOCKING] = REG_FIELD(MSA311_Z_BLOCK_REG, 0, 3),
+};
+
+#define MSA311_WHO_AM_I 0x13
+
+/*
+ * Possible Full Scale ranges
+ *
+ * Axis data is 12-bit signed value, so
+ *
+ * fs0 = (2 + 2) * 9.81 / (2^11) = 0.009580
+ * fs1 = (4 + 4) * 9.81 / (2^11) = 0.019160
+ * fs2 = (8 + 8) * 9.81 / (2^11) = 0.038320
+ * fs3 = (16 + 16) * 9.81 / (2^11) = 0.076641
+ */
+enum {
+	MSA311_FS_2G,
+	MSA311_FS_4G,
+	MSA311_FS_8G,
+	MSA311_FS_16G,
+};
+
+struct iio_decimal_fract {
+	int integral;
+	int microfract;
+};
+
+static const struct iio_decimal_fract msa311_fs_table[] = {
+	{0, 9580}, {0, 19160}, {0, 38320}, {0, 76641},
+};
+
+/* Possible Output Data Rate values */
+enum {
+	MSA311_ODR_1_HZ,
+	MSA311_ODR_1_95_HZ,
+	MSA311_ODR_3_9_HZ,
+	MSA311_ODR_7_81_HZ,
+	MSA311_ODR_15_63_HZ,
+	MSA311_ODR_31_25_HZ,
+	MSA311_ODR_62_5_HZ,
+	MSA311_ODR_125_HZ,
+	MSA311_ODR_250_HZ,
+	MSA311_ODR_500_HZ,
+	MSA311_ODR_1000_HZ,
+};
+
+static const struct iio_decimal_fract msa311_odr_table[] = {
+	{1, 0}, {1, 950000}, {3, 900000}, {7, 810000}, {15, 630000},
+	{31, 250000}, {62, 500000}, {125, 0}, {250, 0}, {500, 0}, {1000, 0},
+};
+
+/* All supported power modes */
+#define MSA311_PWR_MODE_NORMAL  0b00
+#define MSA311_PWR_MODE_LOW     0b01
+#define MSA311_PWR_MODE_UNKNOWN 0b10
+#define MSA311_PWR_MODE_SUSPEND 0b11
+static const char * const msa311_pwr_modes[] = {
+	[MSA311_PWR_MODE_NORMAL] = "normal",
+	[MSA311_PWR_MODE_LOW] = "low",
+	[MSA311_PWR_MODE_UNKNOWN] = "unknown",
+	[MSA311_PWR_MODE_SUSPEND] = "suspend",
+};
+
+/* Autosuspend delay */
+#define MSA311_PWR_SLEEP_DELAY_MS 2000
+
+/* Possible INT1 types and levels */
+enum {
+	MSA311_INT1_OD_PUSH_PULL,
+	MSA311_INT1_OD_OPEN_DRAIN,
+};
+
+enum {
+	MSA311_INT1_LVL_LOW,
+	MSA311_INT1_LVL_HIGH,
+};
+
+/* Latch INT modes */
+#define MSA311_LATCH_INT_NOT_LATCHED 0b0000
+#define MSA311_LATCH_INT_250MS       0b0001
+#define MSA311_LATCH_INT_500MS       0b0010
+#define MSA311_LATCH_INT_1S          0b0011
+#define MSA311_LATCH_INT_2S          0b0100
+#define MSA311_LATCH_INT_4S          0b0101
+#define MSA311_LATCH_INT_8S          0b0110
+#define MSA311_LATCH_INT_1MS         0b1010
+#define MSA311_LATCH_INT_2MS         0b1011
+#define MSA311_LATCH_INT_25MS        0b1100
+#define MSA311_LATCH_INT_50MS        0b1101
+#define MSA311_LATCH_INT_100MS       0b1110
+#define MSA311_LATCH_INT_LATCHED     0b0111
+
+static const struct regmap_range msa311_readonly_registers[] = {
+	regmap_reg_range(MSA311_PARTID_REG, MSA311_ORIENT_STS_REG),
+};
+
+static const struct regmap_access_table msa311_writeable_table = {
+	.no_ranges = msa311_readonly_registers,
+	.n_no_ranges = ARRAY_SIZE(msa311_readonly_registers),
+};
+
+static const struct regmap_range msa311_writeonly_registers[] = {
+	regmap_reg_range(MSA311_SOFT_RESET_REG, MSA311_SOFT_RESET_REG),
+};
+
+static const struct regmap_access_table msa311_readable_table = {
+	.no_ranges = msa311_writeonly_registers,
+	.n_no_ranges = ARRAY_SIZE(msa311_writeonly_registers),
+};
+
+static const struct regmap_range msa311_volatile_registers[] = {
+	regmap_reg_range(MSA311_ACC_X_REG, MSA311_ORIENT_STS_REG),
+};
+
+static const struct regmap_access_table msa311_volatile_table = {
+	.yes_ranges = msa311_volatile_registers,
+	.n_yes_ranges = ARRAY_SIZE(msa311_volatile_registers),
+};
+
+static const struct regmap_config msa311_regmap_config = {
+	.name = "msa311",
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = MSA311_OFFSET_Z_REG,
+	.wr_table = &msa311_writeable_table,
+	.rd_table = &msa311_readable_table,
+	.volatile_table = &msa311_volatile_table,
+	.cache_type = REGCACHE_RBTREE,
+};
+
+#define MSA311_GENMASK(field) ({                \
+	typeof(&(msa311_reg_fields)[0]) _field; \
+	_field = &msa311_reg_fields[(field)];   \
+	GENMASK(_field->msb, _field->lsb);      \
+})
+
+/**
+ * struct msa311_priv - MSA311 internal private state
+ * @regs: Underlying I2C bus adapter used to abstract slave
+ *        register accesses
+ * @fields: Abstract objects for each registers fields access
+ * @dev: Device handler associated with appropriate bus client
+ * @lock: Protects msa311 device state between setup and data access routines
+ *        (power transitions, samp_freq/scale tune, retrieving axes data, etc)
+ * @chip_name: Chip name in the format "msa311-%02x" % partid
+ * @new_data_trig: Optional NEW_DATA interrupt driven trigger used
+ *                 to notify external consumers a new sample is ready
+ * @vdd: Optional external voltage regulator for the device power supply
+ */
+struct msa311_priv {
+	struct regmap *regs;
+	struct regmap_field *fields[F_MAX_FIELDS];
+
+	struct device *dev;
+	struct mutex lock;
+	char *chip_name;
+
+	struct iio_trigger *new_data_trig;
+	struct regulator *vdd;
+};
+
+enum msa311_si {
+	MSA311_SI_X,
+	MSA311_SI_Y,
+	MSA311_SI_Z,
+	MSA311_SI_TIMESTAMP,
+};
+
+#define MSA311_ACCEL_CHANNEL(axis) {                                        \
+	.type = IIO_ACCEL,                                                  \
+	.modified = 1,                                                      \
+	.channel2 = IIO_MOD_##axis,                                         \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),                       \
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |              \
+				    BIT(IIO_CHAN_INFO_SAMP_FREQ),           \
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE) |    \
+					      BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.scan_index = MSA311_SI_##axis,                                     \
+	.scan_type = {                                                      \
+		.sign = 's',                                                \
+		.realbits = 12,                                             \
+		.storagebits = 16,                                          \
+		.shift = 4,                                                 \
+		.endianness = IIO_LE,                                       \
+	},                                                                  \
+	.datasheet_name = "ACC_"#axis,                                      \
+}
+
+static const struct iio_chan_spec msa311_channels[] = {
+	MSA311_ACCEL_CHANNEL(X),
+	MSA311_ACCEL_CHANNEL(Y),
+	MSA311_ACCEL_CHANNEL(Z),
+	IIO_CHAN_SOFT_TIMESTAMP(MSA311_SI_TIMESTAMP),
+};
+
+/**
+ * msa311_get_odr() - Read Output Data Rate (ODR) value from MSA311 accel
+ * @msa311: MSA311 internal private state
+ * @odr: output ODR value
+ *
+ * This function should be called under msa311->lock.
+ *
+ * Return: 0 on success, -ERRNO in other failures
+ */
+static int msa311_get_odr(struct msa311_priv *msa311, unsigned int *odr)
+{
+	int err;
+
+	err = regmap_field_read(msa311->fields[F_ODR], odr);
+	if (err)
+		return err;
+
+	/*
+	 * Filter the same 1000Hz ODR register values based on datasheet info.
+	 * ODR can be equal to 1010-1111 for 1000Hz, but function returns 1010
+	 * all the time.
+	 */
+	if (*odr > MSA311_ODR_1000_HZ)
+		*odr = MSA311_ODR_1000_HZ;
+
+	return 0;
+}
+
+/**
+ * msa311_set_odr() - Setup Output Data Rate (ODR) value for MSA311 accel
+ * @msa311: MSA311 internal private state
+ * @odr: requested ODR value
+ *
+ * This function should be called under msa311->lock. Possible ODR values:
+ *     - 1Hz (not available in normal mode)
+ *     - 1.95Hz (not available in normal mode)
+ *     - 3.9Hz
+ *     - 7.81Hz
+ *     - 15.63Hz
+ *     - 31.25Hz
+ *     - 62.5Hz
+ *     - 125Hz
+ *     - 250Hz
+ *     - 500Hz
+ *     - 1000Hz
+ *
+ * Return: 0 on success, -EINVAL for bad ODR value in the certain power mode,
+ *         -ERRNO in other failures
+ */
+static int msa311_set_odr(struct msa311_priv *msa311, unsigned int odr)
+{
+	struct device *dev = msa311->dev;
+	unsigned int pwr_mode;
+	bool good_odr;
+	int err;
+
+	err = regmap_field_read(msa311->fields[F_PWR_MODE], &pwr_mode);
+	if (err)
+		return err;
+
+	/* Filter bad ODR values */
+	if (pwr_mode == MSA311_PWR_MODE_NORMAL)
+		good_odr = (odr > MSA311_ODR_1_95_HZ);
+	else
+		good_odr = false;
+
+	if (!good_odr) {
+		dev_err(dev,
+			"can't set odr %u.%06uHz, not available in %s mode\n",
+			msa311_odr_table[odr].integral,
+			msa311_odr_table[odr].microfract,
+			msa311_pwr_modes[pwr_mode]);
+		return -EINVAL;
+	}
+
+	return regmap_field_write(msa311->fields[F_ODR], odr);
+}
+
+/**
+ * msa311_wait_for_next_data() - Wait next accel data available after resume
+ * @msa311: MSA311 internal private state
+ *
+ * Return: 0 on success, -EINTR if msleep() was interrupted,
+ *         -ERRNO in other failures
+ */
+static int msa311_wait_for_next_data(struct msa311_priv *msa311)
+{
+	static const unsigned int unintr_thresh_ms = 20;
+	struct device *dev = msa311->dev;
+	unsigned long freq_uhz;
+	unsigned long wait_ms;
+	unsigned int odr;
+	int err;
+
+	err = msa311_get_odr(msa311, &odr);
+	if (err) {
+		dev_err(dev, "can't get actual frequency (%pe)\n",
+			ERR_PTR(err));
+		return err;
+	}
+
+	/*
+	 * After msa311 resuming is done, we need to wait for data
+	 * to be refreshed by accel logic.
+	 * A certain timeout is calculated based on the current ODR value.
+	 * If requested timeout isn't so long (let's assume 20ms),
+	 * we can wait for next data in uninterruptible sleep.
+	 */
+	freq_uhz = msa311_odr_table[odr].integral * MICROHZ_PER_HZ +
+		   msa311_odr_table[odr].microfract;
+	wait_ms = (MICROHZ_PER_HZ / freq_uhz) * MSEC_PER_SEC;
+
+	if (wait_ms < unintr_thresh_ms)
+		usleep_range(wait_ms * USEC_PER_MSEC,
+			     unintr_thresh_ms * USEC_PER_MSEC);
+	else if (msleep_interruptible(wait_ms))
+		return -EINTR;
+
+	return 0;
+}
+
+/**
+ * msa311_set_pwr_mode() - Install certain MSA311 power mode
+ * @msa311: MSA311 internal private state
+ * @mode: Power mode can be equal to NORMAL or SUSPEND
+ *
+ * This function should be called under msa311->lock.
+ *
+ * Return: 0 on success, -ERRNO on failure
+ */
+static int msa311_set_pwr_mode(struct msa311_priv *msa311, unsigned int mode)
+{
+	struct device *dev = msa311->dev;
+	unsigned int prev_mode;
+	int err;
+
+	if (mode >= ARRAY_SIZE(msa311_pwr_modes))
+		return -EINVAL;
+
+	dev_dbg(dev, "transition to %s mode\n", msa311_pwr_modes[mode]);
+
+	err = regmap_field_read(msa311->fields[F_PWR_MODE], &prev_mode);
+	if (err)
+		return err;
+
+	err = regmap_field_write(msa311->fields[F_PWR_MODE], mode);
+	if (err)
+		return err;
+
+	/* Wait actual data if we wake up */
+	if (prev_mode == MSA311_PWR_MODE_SUSPEND &&
+	    mode == MSA311_PWR_MODE_NORMAL)
+		return msa311_wait_for_next_data(msa311);
+
+	return 0;
+}
+
+/**
+ * msa311_get_axis() - Read MSA311 accel data for certain IIO channel axis spec
+ * @msa311: MSA311 internal private state
+ * @chan: IIO channel specification
+ * @axis: Output accel axis data for requested IIO channel spec
+ *
+ * This function should be called under msa311->lock.
+ *
+ * Return: 0 on success, -EINVAL for unknown IIO channel specification,
+ *         -ERRNO in other failures
+ */
+static int msa311_get_axis(struct msa311_priv *msa311,
+			   const struct iio_chan_spec * const chan,
+			   __le16 *axis)
+{
+	struct device *dev = msa311->dev;
+	unsigned int axis_reg;
+
+	if (chan->scan_index < MSA311_SI_X || chan->scan_index > MSA311_SI_Z) {
+		dev_err(dev, "invalid scan_index value [%d]\n",
+			chan->scan_index);
+		return -EINVAL;
+	}
+
+	/* Axes data layout has 2 byte gap for each axis starting from X axis */
+	axis_reg = MSA311_ACC_X_REG + (chan->scan_index << 1);
+
+	return regmap_bulk_read(msa311->regs, axis_reg, axis, sizeof(*axis));
+}
+
+static int msa311_read_raw_data(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	__le16 axis;
+	int err;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	err = iio_device_claim_direct_mode(indio_dev);
+	if (err)
+		return err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_get_axis(msa311, chan, &axis);
+	mutex_unlock(&msa311->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err) {
+		dev_err(dev, "can't get axis %s (%pe)\n",
+			chan->datasheet_name, ERR_PTR(err));
+		return err;
+	}
+
+	/*
+	 * Axis data format is:
+	 * ACC_X = (ACC_X_MSB[7:0] << 4) | ACC_X_LSB[7:4]
+	 */
+	*val = sign_extend32(le16_to_cpu(axis) >> chan->scan_type.shift,
+			     chan->scan_type.realbits - 1);
+
+	return IIO_VAL_INT;
+}
+
+static int msa311_read_scale(struct iio_dev *indio_dev, int *val, int *val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int fs;
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = regmap_field_read(msa311->fields[F_FS], &fs);
+	mutex_unlock(&msa311->lock);
+	if (err) {
+		dev_err(dev, "can't get actual scale (%pe)\n", ERR_PTR(err));
+		return err;
+	}
+
+	*val = msa311_fs_table[fs].integral;
+	*val2 = msa311_fs_table[fs].microfract;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int msa311_read_samp_freq(struct iio_dev *indio_dev,
+				 int *val, int *val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int odr;
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_get_odr(msa311, &odr);
+	mutex_unlock(&msa311->lock);
+	if (err) {
+		dev_err(dev, "can't get actual frequency (%pe)\n",
+			ERR_PTR(err));
+		return err;
+	}
+
+	*val = msa311_odr_table[odr].integral;
+	*val2 = msa311_odr_table[odr].microfract;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int msa311_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return msa311_read_raw_data(indio_dev, chan, val, val2);
+
+	case IIO_CHAN_INFO_SCALE:
+		return msa311_read_scale(indio_dev, val, val2);
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return msa311_read_samp_freq(indio_dev, val, val2);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msa311_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type,
+			     int *length, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (int *)msa311_odr_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* ODR value has 2 ints (integer and fractional parts) */
+		*length = ARRAY_SIZE(msa311_odr_table) * 2;
+		return IIO_AVAIL_LIST;
+
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (int *)msa311_fs_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* FS value has 2 ints (integer and fractional parts) */
+		*length = ARRAY_SIZE(msa311_fs_table) * 2;
+		return IIO_AVAIL_LIST;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msa311_write_scale(struct iio_dev *indio_dev, int val, int val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int fs;
+	int err;
+
+	/* We do not have fs >= 1, so skip such values */
+	if (val)
+		return 0;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	err = -EINVAL;
+	for (fs = 0; fs < ARRAY_SIZE(msa311_fs_table); fs++)
+		/* Do not check msa311_fs_table[fs].integral, it's always 0 */
+		if (val2 == msa311_fs_table[fs].microfract) {
+			mutex_lock(&msa311->lock);
+			err = regmap_field_write(msa311->fields[F_FS], fs);
+			mutex_unlock(&msa311->lock);
+			break;
+		}
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err)
+		dev_err(dev, "can't update scale (%pe)\n", ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_write_samp_freq(struct iio_dev *indio_dev, int val, int val2)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	unsigned int odr;
+	int err;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	/*
+	 * Sampling frequency changing is prohibited when buffer mode is
+	 * enabled, because sometimes MSA311 chip returns outliers during
+	 * frequency values growing up in the read operation moment.
+	 */
+	err = iio_device_claim_direct_mode(indio_dev);
+	if (err)
+		return err;
+
+	err = -EINVAL;
+	for (odr = 0; odr < ARRAY_SIZE(msa311_odr_table); odr++)
+		if (val == msa311_odr_table[odr].integral &&
+		    val2 == msa311_odr_table[odr].microfract) {
+			mutex_lock(&msa311->lock);
+			err = msa311_set_odr(msa311, odr);
+			mutex_unlock(&msa311->lock);
+			break;
+		}
+
+	iio_device_release_direct_mode(indio_dev);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err)
+		dev_err(dev, "can't update frequency (%pe)\n", ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return msa311_write_scale(indio_dev, val, val2);
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return msa311_write_samp_freq(indio_dev, val, val2);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int msa311_debugfs_reg_access(struct iio_dev *indio_dev,
+				     unsigned int reg, unsigned int writeval,
+				     unsigned int *readval)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	int err;
+
+	if (reg > regmap_get_max_register(msa311->regs))
+		return -EINVAL;
+
+	err = pm_runtime_resume_and_get(dev);
+	if (err)
+		return err;
+
+	mutex_lock(&msa311->lock);
+
+	if (readval)
+		err = regmap_read(msa311->regs, reg, readval);
+	else
+		err = regmap_write(msa311->regs, reg, writeval);
+
+	mutex_unlock(&msa311->lock);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	if (err)
+		dev_err(dev, "can't %s register %u from debugfs (%pe)\n",
+			str_read_write(readval), reg, ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_buffer_preenable(struct iio_dev *indio_dev)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+
+	return pm_runtime_resume_and_get(dev);
+}
+
+static int msa311_buffer_postdisable(struct iio_dev *indio_dev)
+{
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return 0;
+}
+
+static int msa311_set_new_data_trig_state(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	struct device *dev = msa311->dev;
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = regmap_field_write(msa311->fields[F_NEW_DATA_INT_EN], state);
+	mutex_unlock(&msa311->lock);
+	if (err)
+		dev_err(dev,
+			"can't %s buffer due to new_data_int failure (%pe)\n",
+			str_enable_disable(state), ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_validate_device(struct iio_trigger *trig,
+				  struct iio_dev *indio_dev)
+{
+	return iio_trigger_get_drvdata(trig) == indio_dev ? 0 : -EINVAL;
+}
+
+static irqreturn_t msa311_buffer_thread(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct msa311_priv *msa311 = iio_priv(pf->indio_dev);
+	struct iio_dev *indio_dev = pf->indio_dev;
+	const struct iio_chan_spec *chan;
+	struct device *dev = msa311->dev;
+	int bit, err, i = 0;
+	__le16 axis;
+	struct {
+		__le16 channels[MSA311_SI_Z + 1];
+		s64 ts __aligned(8);
+	} buf;
+
+	memset(&buf, 0, sizeof(buf));
+
+	mutex_lock(&msa311->lock);
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		chan = &msa311_channels[bit];
+
+		err = msa311_get_axis(msa311, chan, &axis);
+		if (err) {
+			mutex_unlock(&msa311->lock);
+			dev_err(dev, "can't get axis %s (%pe)\n",
+				chan->datasheet_name, ERR_PTR(err));
+			goto notify_done;
+		}
+
+		buf.channels[i++] = axis;
+	}
+
+	mutex_unlock(&msa311->lock);
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &buf,
+					   iio_get_time_ns(indio_dev));
+
+notify_done:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t msa311_irq_thread(int irq, void *p)
+{
+	struct msa311_priv *msa311 = iio_priv(p);
+	unsigned int new_data_int_enabled;
+	struct device *dev = msa311->dev;
+	int err;
+
+	mutex_lock(&msa311->lock);
+
+	/*
+	 * We do not check NEW_DATA int status, because based on the
+	 * specification it's cleared automatically after a fixed time.
+	 * So just check that is enabled by driver logic.
+	 */
+	err = regmap_field_read(msa311->fields[F_NEW_DATA_INT_EN],
+				&new_data_int_enabled);
+
+	mutex_unlock(&msa311->lock);
+	if (err) {
+		dev_err(dev, "can't read new_data interrupt state (%pe)\n",
+			ERR_PTR(err));
+		return IRQ_NONE;
+	}
+
+	if (new_data_int_enabled)
+		iio_trigger_poll_chained(msa311->new_data_trig);
+
+	return IRQ_HANDLED;
+}
+
+static const struct iio_info msa311_info = {
+	.read_raw = msa311_read_raw,
+	.read_avail = msa311_read_avail,
+	.write_raw = msa311_write_raw,
+	.debugfs_reg_access = msa311_debugfs_reg_access,
+};
+
+static const struct iio_buffer_setup_ops msa311_buffer_setup_ops = {
+	.preenable = msa311_buffer_preenable,
+	.postdisable = msa311_buffer_postdisable,
+};
+
+static const struct iio_trigger_ops msa311_new_data_trig_ops = {
+	.set_trigger_state = msa311_set_new_data_trig_state,
+	.validate_device = msa311_validate_device,
+};
+
+static int msa311_check_partid(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	unsigned int partid;
+	int err;
+
+	err = regmap_read(msa311->regs, MSA311_PARTID_REG, &partid);
+	if (err)
+		return dev_err_probe(dev, err, "failed to read partid\n");
+
+	if (partid != MSA311_WHO_AM_I)
+		dev_warn(dev, "invalid partid (%#x), expected (%#x)\n",
+			 partid, MSA311_WHO_AM_I);
+
+	msa311->chip_name = devm_kasprintf(dev, GFP_KERNEL,
+					   "msa311-%02x", partid);
+	if (!msa311->chip_name)
+		return dev_err_probe(dev, -ENOMEM, "can't alloc chip name\n");
+
+	return 0;
+}
+
+static int msa311_soft_reset(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	int err;
+
+	err = regmap_write(msa311->regs, MSA311_SOFT_RESET_REG,
+			   MSA311_GENMASK(F_SOFT_RESET_I2C) |
+			   MSA311_GENMASK(F_SOFT_RESET_SPI));
+	if (err)
+		return dev_err_probe(dev, err, "can't soft reset all logic\n");
+
+	return 0;
+}
+
+static int msa311_chip_init(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	const char zero_bulk[2] = { };
+	int err;
+
+	err = regmap_write(msa311->regs, MSA311_RANGE_REG, MSA311_FS_16G);
+	if (err)
+		return dev_err_probe(dev, err, "failed to setup accel range\n");
+
+	/* Disable all interrupts by default */
+	err = regmap_bulk_write(msa311->regs, MSA311_INT_SET_0_REG,
+				zero_bulk, sizeof(zero_bulk));
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't disable set0/set1 interrupts\n");
+
+	/* Unmap all INT1 interrupts by default */
+	err = regmap_bulk_write(msa311->regs, MSA311_INT_MAP_0_REG,
+				zero_bulk, sizeof(zero_bulk));
+	if (err)
+		return dev_err_probe(dev, err,
+				     "failed to unmap map0/map1 interrupts\n");
+
+	/* Disable all axes by default */
+	err = regmap_update_bits(msa311->regs, MSA311_ODR_REG,
+				 MSA311_GENMASK(F_X_AXIS_DIS) |
+				 MSA311_GENMASK(F_Y_AXIS_DIS) |
+				 MSA311_GENMASK(F_Z_AXIS_DIS), 0);
+	if (err)
+		return dev_err_probe(dev, err, "can't enable all axes\n");
+
+	err = msa311_set_odr(msa311, MSA311_ODR_125_HZ);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "failed to set accel frequency\n");
+
+	return 0;
+}
+
+static int msa311_setup_interrupts(struct msa311_priv *msa311)
+{
+	struct device *dev = msa311->dev;
+	struct i2c_client *i2c = to_i2c_client(dev);
+	struct iio_dev *indio_dev = i2c_get_clientdata(i2c);
+	struct iio_trigger *trig;
+	int err;
+
+	/* Keep going without interrupts if no initialized I2C IRQ */
+	if (i2c->irq <= 0)
+		return 0;
+
+	err = devm_request_threaded_irq(&i2c->dev, i2c->irq, NULL,
+					msa311_irq_thread, IRQF_ONESHOT,
+					msa311->chip_name, indio_dev);
+	if (err)
+		return dev_err_probe(dev, err, "failed to request IRQ\n");
+
+	trig = devm_iio_trigger_alloc(dev, "%s-new-data", msa311->chip_name);
+	if (!trig)
+		return dev_err_probe(dev, -ENOMEM,
+				     "can't allocate newdata trigger\n");
+
+	msa311->new_data_trig = trig;
+	msa311->new_data_trig->ops = &msa311_new_data_trig_ops;
+	iio_trigger_set_drvdata(msa311->new_data_trig, indio_dev);
+
+	err = devm_iio_trigger_register(dev, msa311->new_data_trig);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't register newdata trigger\n");
+
+	err = regmap_field_write(msa311->fields[F_INT1_OD],
+				 MSA311_INT1_OD_PUSH_PULL);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't enable push-pull interrupt\n");
+
+	err = regmap_field_write(msa311->fields[F_INT1_LVL],
+				 MSA311_INT1_LVL_HIGH);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't set active interrupt level\n");
+
+	err = regmap_field_write(msa311->fields[F_LATCH_INT],
+				 MSA311_LATCH_INT_LATCHED);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't latch interrupt\n");
+
+	err = regmap_field_write(msa311->fields[F_RESET_INT], 1);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't reset interrupt\n");
+
+	err = regmap_field_write(msa311->fields[F_INT1_NEW_DATA], 1);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't map new data interrupt\n");
+
+	return 0;
+}
+
+static int msa311_regmap_init(struct msa311_priv *msa311)
+{
+	struct regmap_field **fields = msa311->fields;
+	struct device *dev = msa311->dev;
+	struct i2c_client *i2c = to_i2c_client(dev);
+	struct regmap *regmap;
+	int i;
+
+	regmap = devm_regmap_init_i2c(i2c, &msa311_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap),
+				     "failed to register i2c regmap\n");
+
+	msa311->regs = regmap;
+
+	for (i = 0; i < F_MAX_FIELDS; i++) {
+		fields[i] = devm_regmap_field_alloc(dev,
+						    msa311->regs,
+						    msa311_reg_fields[i]);
+		if (IS_ERR(msa311->fields[i]))
+			return dev_err_probe(dev, PTR_ERR(msa311->fields[i]),
+					     "can't alloc field[%d]\n", i);
+	}
+
+	return 0;
+}
+
+static void msa311_powerdown(void *msa311)
+{
+	msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_SUSPEND);
+}
+
+static void msa311_vdd_disable(void *vdd)
+{
+	regulator_disable(vdd);
+}
+
+static int msa311_probe(struct i2c_client *i2c)
+{
+	struct device *dev = &i2c->dev;
+	struct msa311_priv *msa311;
+	struct iio_dev *indio_dev;
+	int err;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*msa311));
+	if (!indio_dev)
+		return dev_err_probe(dev, -ENOMEM,
+				     "IIO device allocation failed\n");
+
+	msa311 = iio_priv(indio_dev);
+	msa311->dev = dev;
+	i2c_set_clientdata(i2c, indio_dev);
+
+	err = msa311_regmap_init(msa311);
+	if (err)
+		return err;
+
+	mutex_init(&msa311->lock);
+
+	msa311->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(msa311->vdd))
+		return dev_err_probe(dev, PTR_ERR(msa311->vdd),
+				     "can't get vdd supply\n");
+
+	err = regulator_enable(msa311->vdd);
+	if (err)
+		return dev_err_probe(dev, err, "can't enable vdd supply\n");
+
+	err = devm_add_action_or_reset(dev, msa311_vdd_disable, msa311->vdd);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't add vdd disable action\n");
+
+	err = msa311_check_partid(msa311);
+	if (err)
+		return err;
+
+	err = msa311_soft_reset(msa311);
+	if (err)
+		return err;
+
+	err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_NORMAL);
+	if (err)
+		return dev_err_probe(dev, err, "failed to power on device\n");
+
+	/*
+	 * Register powerdown deferred callback which suspends the chip
+	 * after module unloaded.
+	 *
+	 * MSA311 should be in SUSPEND mode in the two cases:
+	 * 1) When driver is loaded, but we do not have any data or
+	 *    configuration requests to it (we are solving it using
+	 *    autosuspend feature).
+	 * 2) When driver is unloaded and device is not used (devm action is
+	 *    used in this case).
+	 */
+	err = devm_add_action_or_reset(dev, msa311_powerdown, msa311);
+	if (err)
+		return dev_err_probe(dev, err, "can't add powerdown action\n");
+
+	err = pm_runtime_set_active(dev);
+	if (err)
+		return err;
+
+	err = devm_pm_runtime_enable(dev);
+	if (err)
+		return err;
+
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_autosuspend_delay(dev, MSA311_PWR_SLEEP_DELAY_MS);
+	pm_runtime_use_autosuspend(dev);
+
+	err = msa311_chip_init(msa311);
+	if (err)
+		return err;
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = msa311_channels;
+	indio_dev->num_channels = ARRAY_SIZE(msa311_channels);
+	indio_dev->name = msa311->chip_name;
+	indio_dev->info = &msa311_info;
+
+	err = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      msa311_buffer_thread,
+					      &msa311_buffer_setup_ops);
+	if (err)
+		return dev_err_probe(dev, err,
+				     "can't setup IIO trigger buffer\n");
+
+	err = msa311_setup_interrupts(msa311);
+	if (err)
+		return err;
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	err = devm_iio_device_register(dev, indio_dev);
+	if (err)
+		return dev_err_probe(dev, err, "IIO device register failed\n");
+
+	return 0;
+}
+
+static int msa311_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_SUSPEND);
+	mutex_unlock(&msa311->lock);
+	if (err)
+		dev_err(dev, "failed to power off device (%pe)\n",
+			ERR_PTR(err));
+
+	return err;
+}
+
+static int msa311_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct msa311_priv *msa311 = iio_priv(indio_dev);
+	int err;
+
+	mutex_lock(&msa311->lock);
+	err = msa311_set_pwr_mode(msa311, MSA311_PWR_MODE_NORMAL);
+	mutex_unlock(&msa311->lock);
+	if (err)
+		dev_err(dev, "failed to power on device (%pe)\n",
+			ERR_PTR(err));
+
+	return err;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(msa311_pm_ops, msa311_runtime_suspend,
+				 msa311_runtime_resume, NULL);
+
+static const struct i2c_device_id msa311_i2c_id[] = {
+	{ .name = "msa311" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, msa311_i2c_id);
+
+static const struct of_device_id msa311_of_match[] = {
+	{ .compatible = "memsensing,msa311" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, msa311_of_match);
+
+static struct i2c_driver msa311_driver = {
+	.driver = {
+		.name = "msa311",
+		.of_match_table = msa311_of_match,
+		.pm = pm_ptr(&msa311_pm_ops),
+	},
+	.probe_new	= msa311_probe,
+	.id_table	= msa311_i2c_id,
+};
+module_i2c_driver(msa311_driver);
+
+MODULE_AUTHOR("Dmitry Rokosov <ddrokosov@sberdevices.ru>");
+MODULE_DESCRIPTION("MEMSensing MSA311 3-axis accelerometer driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/accel/mxc4005.c b/drivers/iio/accel/mxc4005.c
index 3d5bea651923..df600d2917c0 100644
--- a/drivers/iio/accel/mxc4005.c
+++ b/drivers/iio/accel/mxc4005.c
@@ -56,7 +56,11 @@ struct mxc4005_data {
 	struct mutex mutex;
 	struct regmap *regmap;
 	struct iio_trigger *dready_trig;
-	__be16 buffer[8];
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		__be16 chans[3];
+		s64 timestamp __aligned(8);
+	} scan;
 	bool trigger_enabled;
 };
 
@@ -135,7 +139,7 @@ static int mxc4005_read_xyz(struct mxc4005_data *data)
 	int ret;
 
 	ret = regmap_bulk_read(data->regmap, MXC4005_REG_XOUT_UPPER,
-			       (u8 *) data->buffer, sizeof(data->buffer));
+			       data->scan.chans, sizeof(data->scan.chans));
 	if (ret < 0) {
 		dev_err(data->dev, "failed to read axes\n");
 		return ret;
@@ -150,7 +154,7 @@ static int mxc4005_read_axis(struct mxc4005_data *data,
 	__be16 reg;
 	int ret;
 
-	ret = regmap_bulk_read(data->regmap, addr, (u8 *) &reg, sizeof(reg));
+	ret = regmap_bulk_read(data->regmap, addr, &reg, sizeof(reg));
 	if (ret < 0) {
 		dev_err(data->dev, "failed to read reg %02x\n", addr);
 		return ret;
@@ -301,7 +305,7 @@ static irqreturn_t mxc4005_trigger_handler(int irq, void *private)
 	if (ret < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 
 err:
@@ -310,19 +314,15 @@ err:
 	return IRQ_HANDLED;
 }
 
-static int mxc4005_clr_intr(struct mxc4005_data *data)
+static void mxc4005_clr_intr(struct mxc4005_data *data)
 {
 	int ret;
 
 	/* clear interrupt */
 	ret = regmap_write(data->regmap, MXC4005_REG_INT_CLR1,
 			   MXC4005_REG_INT_CLR1_BIT_DRDYC);
-	if (ret < 0) {
+	if (ret < 0)
 		dev_err(data->dev, "failed to write to reg_int_clr1\n");
-		return ret;
-	}
-
-	return 0;
 }
 
 static int mxc4005_set_trigger_state(struct iio_trigger *trig,
@@ -353,20 +353,20 @@ static int mxc4005_set_trigger_state(struct iio_trigger *trig,
 	return 0;
 }
 
-static int mxc4005_trigger_try_reen(struct iio_trigger *trig)
+static void mxc4005_trigger_reen(struct iio_trigger *trig)
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct mxc4005_data *data = iio_priv(indio_dev);
 
 	if (!data->dready_trig)
-		return 0;
+		return;
 
-	return mxc4005_clr_intr(data);
+	mxc4005_clr_intr(data);
 }
 
 static const struct iio_trigger_ops mxc4005_trigger_ops = {
 	.set_trigger_state = mxc4005_set_trigger_state,
-	.try_reenable = mxc4005_trigger_try_reen,
+	.reenable = mxc4005_trigger_reen,
 };
 
 static int mxc4005_chip_init(struct mxc4005_data *data)
@@ -416,7 +416,6 @@ static int mxc4005_probe(struct i2c_client *client,
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = mxc4005_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mxc4005_channels);
 	indio_dev->available_scan_masks = mxc4005_scan_masks;
@@ -438,7 +437,7 @@ static int mxc4005_probe(struct i2c_client *client,
 		data->dready_trig = devm_iio_trigger_alloc(&client->dev,
 							   "%s-dev%d",
 							   indio_dev->name,
-							   indio_dev->id);
+							   iio_device_id(indio_dev));
 		if (!data->dready_trig)
 			return -ENOMEM;
 
@@ -455,11 +454,8 @@ static int mxc4005_probe(struct i2c_client *client,
 			return ret;
 		}
 
-		data->dready_trig->dev.parent = &client->dev;
 		data->dready_trig->ops = &mxc4005_trigger_ops;
 		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
-		indio_dev->trig = data->dready_trig;
-		iio_trigger_get(indio_dev->trig);
 		ret = devm_iio_trigger_register(&client->dev,
 						data->dready_trig);
 		if (ret) {
@@ -467,6 +463,8 @@ static int mxc4005_probe(struct i2c_client *client,
 				"failed to register trigger\n");
 			return ret;
 		}
+
+		indio_dev->trig = iio_trigger_get(data->dready_trig);
 	}
 
 	return devm_iio_device_register(&client->dev, indio_dev);
@@ -474,12 +472,14 @@ static int mxc4005_probe(struct i2c_client *client,
 
 static const struct acpi_device_id mxc4005_acpi_match[] = {
 	{"MXC4005",	0},
+	{"MXC6655",	0},
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, mxc4005_acpi_match);
 
 static const struct i2c_device_id mxc4005_id[] = {
 	{"mxc4005",	0},
+	{"mxc6655",	0},
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, mxc4005_id);
diff --git a/drivers/iio/accel/mxc6255.c b/drivers/iio/accel/mxc6255.c
index f532f8643aa4..9aeeadc420d3 100644
--- a/drivers/iio/accel/mxc6255.c
+++ b/drivers/iio/accel/mxc6255.c
@@ -138,7 +138,6 @@ static int mxc6255_probe(struct i2c_client *client,
 	data->regmap = regmap;
 
 	indio_dev->name = MXC6255_DRV_NAME;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = mxc6255_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mxc6255_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/accel/sca3000.c b/drivers/iio/accel/sca3000.c
index 66d768d971e1..87c54e41f6cc 100644
--- a/drivers/iio/accel/sca3000.c
+++ b/drivers/iio/accel/sca3000.c
@@ -167,8 +167,8 @@ struct sca3000_state {
 	int				mo_det_use_count;
 	struct mutex			lock;
 	/* Can these share a cacheline ? */
-	u8				rx[384] ____cacheline_aligned;
-	u8				tx[6] ____cacheline_aligned;
+	u8				rx[384] __aligned(IIO_DMA_MINALIGN);
+	u8				tx[6] __aligned(IIO_DMA_MINALIGN);
 };
 
 /**
@@ -186,9 +186,9 @@ struct sca3000_state {
  * @option_mode_2_freq:		option mode 2 sampling frequency
  * @option_mode_2_3db_freq:	3db cutoff frequency of the low pass filter for
  * the second option mode.
- * @mod_det_mult_xz:		Bit wise multipliers to calculate the threshold
+ * @mot_det_mult_xz:		Bit wise multipliers to calculate the threshold
  * for motion detection in the x and z axis.
- * @mod_det_mult_y:		Bit wise multipliers to calculate the threshold
+ * @mot_det_mult_y:		Bit wise multipliers to calculate the threshold
  * for motion detection in the y axis.
  *
  * This structure is used to hold information about the functionality of a given
@@ -351,7 +351,7 @@ static int __sca3000_unlock_reg_lock(struct sca3000_state *st)
 }
 
 /**
- * sca3000_write_ctrl_reg() write to a lock protect ctrl register
+ * sca3000_write_ctrl_reg() - write to a lock protect ctrl register
  * @st: Driver specific device instance data.
  * @sel: selects which registers we wish to write to
  * @val: the value to be written
@@ -389,7 +389,7 @@ error_ret:
 }
 
 /**
- * sca3000_read_ctrl_reg() read from lock protected control register.
+ * sca3000_read_ctrl_reg() - read from lock protected control register.
  * @st: Driver specific device instance data.
  * @ctrl_reg: Which ctrl register do we want to read.
  *
@@ -421,10 +421,10 @@ error_ret:
 }
 
 /**
- * sca3000_show_rev() - sysfs interface to read the chip revision number
+ * sca3000_print_rev() - sysfs interface to read the chip revision number
  * @indio_dev: Device instance specific generic IIO data.
  * Driver specific device instance data can be obtained via
- * via iio_priv(indio_dev)
+ * iio_priv(indio_dev)
  */
 static int sca3000_print_rev(struct iio_dev *indio_dev)
 {
@@ -534,6 +534,13 @@ static const struct iio_chan_spec sca3000_channels_with_temp[] = {
 			BIT(IIO_CHAN_INFO_OFFSET),
 		/* No buffer support */
 		.scan_index = -1,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 9,
+			.storagebits = 16,
+			.shift = 5,
+			.endianness = IIO_BE,
+		},
 	},
 	{
 		.type = IIO_ACCEL,
@@ -730,9 +737,9 @@ static int sca3000_read_raw(struct iio_dev *indio_dev,
 				mutex_unlock(&st->lock);
 				return ret;
 			}
-			*val = (be16_to_cpup((__be16 *)st->rx) >> 3) & 0x1FFF;
-			*val = ((*val) << (sizeof(*val) * 8 - 13)) >>
-				(sizeof(*val) * 8 - 13);
+			*val = sign_extend32(be16_to_cpup((__be16 *)st->rx) >>
+					     chan->scan_type.shift,
+					     chan->scan_type.realbits - 1);
 		} else {
 			/* get the temperature when available */
 			ret = sca3000_read_data_short(st,
@@ -742,8 +749,9 @@ static int sca3000_read_raw(struct iio_dev *indio_dev,
 				mutex_unlock(&st->lock);
 				return ret;
 			}
-			*val = ((st->rx[0] & 0x3F) << 3) |
-			       ((st->rx[1] & 0xE0) >> 5);
+			*val = (be16_to_cpup((__be16 *)st->rx) >>
+				chan->scan_type.shift) &
+				GENMASK(chan->scan_type.realbits - 1, 0);
 		}
 		mutex_unlock(&st->lock);
 		return IIO_VAL_INT;
@@ -859,9 +867,9 @@ error_ret:
  */
 static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(sca3000_read_av_freq);
 
-/**
+/*
  * sca3000_read_event_value() - query of a threshold or period
- **/
+ */
 static int sca3000_read_event_value(struct iio_dev *indio_dev,
 				    const struct iio_chan_spec *chan,
 				    enum iio_event_type type,
@@ -902,7 +910,7 @@ static int sca3000_read_event_value(struct iio_dev *indio_dev,
 }
 
 /**
- * sca3000_write_value() - control of threshold and period
+ * sca3000_write_event_value() - control of threshold and period
  * @indio_dev: Device instance specific IIO information.
  * @chan: Description of the channel for which the event is being
  * configured.
@@ -980,7 +988,7 @@ static int sca3000_read_data(struct sca3000_state *st,
 	st->tx[0] = SCA3000_READ_REG(reg_address_high);
 	ret = spi_sync_transfer(st->us, xfer, ARRAY_SIZE(xfer));
 	if (ret) {
-		dev_err(get_device(&st->us->dev), "problem reading register");
+		dev_err(&st->us->dev, "problem reading register\n");
 		return ret;
 	}
 
@@ -1100,9 +1108,9 @@ done:
 	return IRQ_HANDLED;
 }
 
-/**
+/*
  * sca3000_read_event_config() what events are enabled
- **/
+ */
 static int sca3000_read_event_config(struct iio_dev *indio_dev,
 				     const struct iio_chan_spec *chan,
 				     enum iio_event_type type,
@@ -1272,20 +1280,6 @@ static int sca3000_write_event_config(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static int sca3000_configure_ring(struct iio_dev *indio_dev)
-{
-	struct iio_buffer *buffer;
-
-	buffer = devm_iio_kfifo_allocate(&indio_dev->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-	indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
-
-	return 0;
-}
-
 static inline
 int __sca3000_hw_ring_state_set(struct iio_dev *indio_dev, bool state)
 {
@@ -1467,7 +1461,6 @@ static int sca3000_probe(struct spi_device *spi)
 	st->info = &sca3000_spi_chip_info_tbl[spi_get_device_id(spi)
 					      ->driver_data];
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &sca3000_info;
 	if (st->info->temp_output) {
@@ -1480,7 +1473,8 @@ static int sca3000_probe(struct spi_device *spi)
 	}
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = sca3000_configure_ring(indio_dev);
+	ret = devm_iio_kfifo_buffer_setup(&spi->dev, indio_dev,
+					  &sca3000_ring_setup_ops);
 	if (ret)
 		return ret;
 
@@ -1494,7 +1488,6 @@ static int sca3000_probe(struct spi_device *spi)
 		if (ret)
 			return ret;
 	}
-	indio_dev->setup_ops = &sca3000_ring_setup_ops;
 	ret = sca3000_clean_setup(st);
 	if (ret)
 		goto error_free_irq;
@@ -1530,7 +1523,7 @@ error_ret:
 	return ret;
 }
 
-static int sca3000_remove(struct spi_device *spi)
+static void sca3000_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct sca3000_state *st = iio_priv(indio_dev);
@@ -1541,8 +1534,6 @@ static int sca3000_remove(struct spi_device *spi)
 	sca3000_stop_all_interrupts(st);
 	if (spi->irq)
 		free_irq(spi->irq, indio_dev);
-
-	return 0;
 }
 
 static const struct spi_device_id sca3000_id[] = {
diff --git a/drivers/iio/accel/sca3300.c b/drivers/iio/accel/sca3300.c
new file mode 100644
index 000000000000..eaa0c9cfda44
--- /dev/null
+++ b/drivers/iio/accel/sca3300.c
@@ -0,0 +1,693 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Murata SCA3300 3-axis industrial accelerometer
+ *
+ * Copyright (c) 2021 Vaisala Oyj. All rights reserved.
+ */
+
+#include <linux/bitops.h>
+#include <linux/crc8.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+
+#include <asm/unaligned.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define SCA3300_ALIAS "sca3300"
+
+#define SCA3300_CRC8_POLYNOMIAL 0x1d
+
+/* Device mode register */
+#define SCA3300_REG_MODE	0xd
+#define SCA3300_MODE_SW_RESET	0x20
+
+/* Last register in map */
+#define SCA3300_REG_SELBANK	0x1f
+
+/* Device status and mask */
+#define SCA3300_REG_STATUS	0x6
+#define SCA3300_STATUS_MASK	GENMASK(8, 0)
+
+/* Device ID */
+#define SCA3300_REG_WHOAMI	0x10
+#define SCA3300_WHOAMI_ID	0x51
+#define SCL3300_WHOAMI_ID	0xC1
+
+/* Device return status and mask */
+#define SCA3300_VALUE_RS_ERROR	0x3
+#define SCA3300_MASK_RS_STATUS	GENMASK(1, 0)
+
+#define SCL3300_REG_ANG_CTRL 0x0C
+#define SCL3300_ANG_ENABLE   0x1F
+
+enum sca3300_scan_indexes {
+	SCA3300_ACC_X = 0,
+	SCA3300_ACC_Y,
+	SCA3300_ACC_Z,
+	SCA3300_TEMP,
+	SCA3300_INCLI_X,
+	SCA3300_INCLI_Y,
+	SCA3300_INCLI_Z,
+	SCA3300_SCAN_MAX
+};
+
+/*
+ * Buffer size max case:
+ * Three accel channels, two bytes per channel.
+ * Temperature channel, two bytes.
+ * Three incli channels, two bytes per channel.
+ * Timestamp channel, eight bytes.
+ */
+#define SCA3300_MAX_BUFFER_SIZE (ALIGN(sizeof(s16) * SCA3300_SCAN_MAX, sizeof(s64)) + sizeof(s64))
+
+#define SCA3300_ACCEL_CHANNEL(index, reg, axis) {			\
+	.type = IIO_ACCEL,						\
+	.address = reg,							\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type =					\
+	BIT(IIO_CHAN_INFO_SCALE) |					\
+	BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),		\
+	.info_mask_shared_by_type_available =				\
+	BIT(IIO_CHAN_INFO_SCALE) |					\
+	BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),		\
+	.scan_index = index,						\
+	.scan_type = {							\
+		.sign = 's',						\
+		.realbits = 16,						\
+		.storagebits = 16,					\
+		.endianness = IIO_CPU,					\
+	},								\
+}
+
+#define SCA3300_INCLI_CHANNEL(index, reg, axis) {			\
+	.type = IIO_INCLI,						\
+	.address = reg,							\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),		\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE), \
+	.scan_index = index,						\
+	.scan_type = {							\
+		.sign = 's',						\
+		.realbits = 16,						\
+		.storagebits = 16,					\
+		.endianness = IIO_CPU,					\
+	},								\
+}
+
+#define SCA3300_TEMP_CHANNEL(index, reg) {				\
+		.type = IIO_TEMP,					\
+		.address = reg,						\
+		.scan_index = index,					\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+		.scan_type = {						\
+			.sign = 's',					\
+			.realbits = 16,					\
+			.storagebits = 16,				\
+			.endianness = IIO_CPU,				\
+		},							\
+}
+
+static const struct iio_chan_spec sca3300_channels[] = {
+	SCA3300_ACCEL_CHANNEL(SCA3300_ACC_X, 0x1, X),
+	SCA3300_ACCEL_CHANNEL(SCA3300_ACC_Y, 0x2, Y),
+	SCA3300_ACCEL_CHANNEL(SCA3300_ACC_Z, 0x3, Z),
+	SCA3300_TEMP_CHANNEL(SCA3300_TEMP, 0x05),
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+static const int sca3300_lp_freq[] = {70, 10};
+static const int sca3300_lp_freq_map[] = {0, 0, 0, 1};
+
+static const int scl3300_lp_freq[] = {40, 70, 10};
+static const int scl3300_lp_freq_map[] = {0, 1, 2};
+
+static const int sca3300_accel_scale[][2] = {{0, 370}, {0, 741}, {0, 185}};
+static const int sca3300_accel_scale_map[] = {0, 1, 2, 2};
+
+static const int scl3300_accel_scale[][2] = {{0, 167}, {0, 333}, {0, 83}};
+static const int scl3300_accel_scale_map[] = {0, 1, 2};
+
+static const int scl3300_incli_scale[][2] = {{0, 5495}};
+static const int scl3300_incli_scale_map[] = {0, 0, 0};
+
+static const int sca3300_avail_modes_map[] = {0, 1, 2, 3};
+static const int scl3300_avail_modes_map[] = {0, 1, 3};
+
+static const struct iio_chan_spec scl3300_channels[] = {
+	SCA3300_ACCEL_CHANNEL(SCA3300_ACC_X, 0x1, X),
+	SCA3300_ACCEL_CHANNEL(SCA3300_ACC_Y, 0x2, Y),
+	SCA3300_ACCEL_CHANNEL(SCA3300_ACC_Z, 0x3, Z),
+	SCA3300_TEMP_CHANNEL(SCA3300_TEMP, 0x05),
+	SCA3300_INCLI_CHANNEL(SCA3300_INCLI_X, 0x09, X),
+	SCA3300_INCLI_CHANNEL(SCA3300_INCLI_Y, 0x0A, Y),
+	SCA3300_INCLI_CHANNEL(SCA3300_INCLI_Z, 0x0B, Z),
+	IIO_CHAN_SOFT_TIMESTAMP(7),
+};
+
+static const unsigned long sca3300_scan_masks[] = {
+	BIT(SCA3300_ACC_X) | BIT(SCA3300_ACC_Y) | BIT(SCA3300_ACC_Z) |
+	BIT(SCA3300_TEMP),
+	0
+};
+
+static const unsigned long scl3300_scan_masks[] = {
+	BIT(SCA3300_ACC_X) | BIT(SCA3300_ACC_Y) | BIT(SCA3300_ACC_Z) |
+	BIT(SCA3300_TEMP) |
+	BIT(SCA3300_INCLI_X) | BIT(SCA3300_INCLI_Y) | BIT(SCA3300_INCLI_Z),
+	0
+};
+
+struct sca3300_chip_info {
+	const char *name;
+	const unsigned long *scan_masks;
+	const struct iio_chan_spec *channels;
+	u8 num_channels;
+	u8 num_accel_scales;
+	const int (*accel_scale)[2];
+	const int *accel_scale_map;
+	const int (*incli_scale)[2];
+	const int *incli_scale_map;
+	u8 num_incli_scales;
+	u8 num_freqs;
+	const int *freq_table;
+	const int *freq_map;
+	const int *avail_modes_table;
+	u8 num_avail_modes;
+	u8 chip_id;
+	bool angle_supported;
+};
+
+/**
+ * struct sca3300_data - device data
+ * @spi: SPI device structure
+ * @lock: Data buffer lock
+ * @chip: Sensor chip specific information
+ * @buffer: Triggered buffer:
+ *          -SCA3300: 4 channel 16-bit data + 64-bit timestamp
+ *          -SCL3300: 7 channel 16-bit data + 64-bit timestamp
+ * @txbuf: Transmit buffer
+ * @rxbuf: Receive buffer
+ */
+struct sca3300_data {
+	struct spi_device *spi;
+	struct mutex lock;
+	const struct sca3300_chip_info *chip;
+	u8 buffer[SCA3300_MAX_BUFFER_SIZE] __aligned(sizeof(s64));
+	u8 txbuf[4] __aligned(IIO_DMA_MINALIGN);
+	u8 rxbuf[4];
+};
+
+static const struct sca3300_chip_info sca3300_chip_tbl[] = {
+	{
+		.name = "sca3300",
+		.scan_masks = sca3300_scan_masks,
+		.channels = sca3300_channels,
+		.num_channels = ARRAY_SIZE(sca3300_channels),
+		.num_accel_scales = ARRAY_SIZE(sca3300_accel_scale)*2,
+		.accel_scale = sca3300_accel_scale,
+		.accel_scale_map = sca3300_accel_scale_map,
+		.num_freqs = ARRAY_SIZE(sca3300_lp_freq),
+		.freq_table = sca3300_lp_freq,
+		.freq_map = sca3300_lp_freq_map,
+		.avail_modes_table = sca3300_avail_modes_map,
+		.num_avail_modes = 4,
+		.chip_id = SCA3300_WHOAMI_ID,
+		.angle_supported = false,
+	},
+	{
+		.name = "scl3300",
+		.scan_masks = scl3300_scan_masks,
+		.channels = scl3300_channels,
+		.num_channels = ARRAY_SIZE(scl3300_channels),
+		.num_accel_scales = ARRAY_SIZE(scl3300_accel_scale)*2,
+		.accel_scale = scl3300_accel_scale,
+		.accel_scale_map = scl3300_accel_scale_map,
+		.incli_scale = scl3300_incli_scale,
+		.incli_scale_map = scl3300_incli_scale_map,
+		.num_incli_scales =  ARRAY_SIZE(scl3300_incli_scale)*2,
+		.num_freqs = ARRAY_SIZE(scl3300_lp_freq),
+		.freq_table = scl3300_lp_freq,
+		.freq_map = scl3300_lp_freq_map,
+		.avail_modes_table = scl3300_avail_modes_map,
+		.num_avail_modes = 3,
+		.chip_id = SCL3300_WHOAMI_ID,
+		.angle_supported = true,
+	},
+};
+
+DECLARE_CRC8_TABLE(sca3300_crc_table);
+
+static int sca3300_transfer(struct sca3300_data *sca_data, int *val)
+{
+	/* Consecutive requests min. 10 us delay (Datasheet section 5.1.2) */
+	struct spi_delay delay = { .value = 10, .unit = SPI_DELAY_UNIT_USECS };
+	int32_t ret;
+	int rs;
+	u8 crc;
+	struct spi_transfer xfers[2] = {
+		{
+			.tx_buf = sca_data->txbuf,
+			.len = ARRAY_SIZE(sca_data->txbuf),
+			.delay = delay,
+			.cs_change = 1,
+		},
+		{
+			.rx_buf = sca_data->rxbuf,
+			.len = ARRAY_SIZE(sca_data->rxbuf),
+			.delay = delay,
+		}
+	};
+
+	/* inverted crc value as described in device data sheet */
+	crc = ~crc8(sca3300_crc_table, &sca_data->txbuf[0], 3, CRC8_INIT_VALUE);
+	sca_data->txbuf[3] = crc;
+
+	ret = spi_sync_transfer(sca_data->spi, xfers, ARRAY_SIZE(xfers));
+	if (ret) {
+		dev_err(&sca_data->spi->dev,
+			"transfer error, error: %d\n", ret);
+		return -EIO;
+	}
+
+	crc = ~crc8(sca3300_crc_table, &sca_data->rxbuf[0], 3, CRC8_INIT_VALUE);
+	if (sca_data->rxbuf[3] != crc) {
+		dev_err(&sca_data->spi->dev, "CRC checksum mismatch");
+		return -EIO;
+	}
+
+	/* get return status */
+	rs = sca_data->rxbuf[0] & SCA3300_MASK_RS_STATUS;
+	if (rs == SCA3300_VALUE_RS_ERROR)
+		ret = -EINVAL;
+
+	*val = sign_extend32(get_unaligned_be16(&sca_data->rxbuf[1]), 15);
+
+	return ret;
+}
+
+static int sca3300_error_handler(struct sca3300_data *sca_data)
+{
+	int ret;
+	int val;
+
+	mutex_lock(&sca_data->lock);
+	sca_data->txbuf[0] = SCA3300_REG_STATUS << 2;
+	ret = sca3300_transfer(sca_data, &val);
+	mutex_unlock(&sca_data->lock);
+	/*
+	 * Return status error is cleared after reading status register once,
+	 * expect EINVAL here.
+	 */
+	if (ret != -EINVAL) {
+		dev_err(&sca_data->spi->dev,
+			"error reading device status: %d\n", ret);
+		return ret;
+	}
+
+	dev_err(&sca_data->spi->dev, "device status: 0x%lx\n",
+		val & SCA3300_STATUS_MASK);
+
+	return 0;
+}
+
+static int sca3300_read_reg(struct sca3300_data *sca_data, u8 reg, int *val)
+{
+	int ret;
+
+	mutex_lock(&sca_data->lock);
+	sca_data->txbuf[0] = reg << 2;
+	ret = sca3300_transfer(sca_data, val);
+	mutex_unlock(&sca_data->lock);
+	if (ret != -EINVAL)
+		return ret;
+
+	return sca3300_error_handler(sca_data);
+}
+
+static int sca3300_write_reg(struct sca3300_data *sca_data, u8 reg, int val)
+{
+	int reg_val = 0;
+	int ret;
+
+	mutex_lock(&sca_data->lock);
+	/* BIT(7) for write operation */
+	sca_data->txbuf[0] = BIT(7) | (reg << 2);
+	put_unaligned_be16(val, &sca_data->txbuf[1]);
+	ret = sca3300_transfer(sca_data, &reg_val);
+	mutex_unlock(&sca_data->lock);
+	if (ret != -EINVAL)
+		return ret;
+
+	return sca3300_error_handler(sca_data);
+}
+
+static int sca3300_set_op_mode(struct sca3300_data *sca_data, int index)
+{
+	if ((index < 0) || (index >= sca_data->chip->num_avail_modes))
+		return -EINVAL;
+
+	return sca3300_write_reg(sca_data, SCA3300_REG_MODE,
+				 sca_data->chip->avail_modes_table[index]);
+}
+
+static int sca3300_get_op_mode(struct sca3300_data *sca_data, int *index)
+{
+	int reg_val;
+	int ret;
+	int i;
+
+	ret = sca3300_read_reg(sca_data, SCA3300_REG_MODE, &reg_val);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < sca_data->chip->num_avail_modes; i++) {
+		if (sca_data->chip->avail_modes_table[i] == reg_val)
+			break;
+	}
+	if (i == sca_data->chip->num_avail_modes)
+		return -EINVAL;
+
+	*index = i;
+	return 0;
+}
+
+static int sca3300_set_frequency(struct sca3300_data *data, int val)
+{
+	const struct sca3300_chip_info *chip = data->chip;
+	unsigned int index;
+	int *opmode_scale;
+	int *new_scale;
+	unsigned int i;
+
+	if (sca3300_get_op_mode(data, &index))
+		return -EINVAL;
+
+	/*
+	 * Find a mode in which the requested sampling frequency is available
+	 * and the scaling currently set is retained.
+	 */
+	opmode_scale = (int *)chip->accel_scale[chip->accel_scale_map[index]];
+	for (i = 0; i < chip->num_avail_modes; i++) {
+		new_scale = (int *)chip->accel_scale[chip->accel_scale_map[i]];
+		if ((val == chip->freq_table[chip->freq_map[i]]) &&
+		    (opmode_scale[1] == new_scale[1]) &&
+		    (opmode_scale[0] == new_scale[0]))
+			break;
+	}
+	if (i == chip->num_avail_modes)
+		return -EINVAL;
+
+	return sca3300_set_op_mode(data, i);
+}
+
+static int sca3300_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct sca3300_data *data = iio_priv(indio_dev);
+	int index;
+	int i;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		if (chan->type != IIO_ACCEL)
+			return -EINVAL;
+		/*
+		 * Letting scale take priority over sampling frequency.
+		 * That makes sense given we can only ever end up increasing
+		 * the sampling frequency which is unlikely to be a problem.
+		 */
+		for (i = 0; i < data->chip->num_avail_modes; i++) {
+			index = data->chip->accel_scale_map[i];
+			if ((val  == data->chip->accel_scale[index][0]) &&
+			    (val2 == data->chip->accel_scale[index][1]))
+				return sca3300_set_op_mode(data, i);
+		}
+		return -EINVAL;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return sca3300_set_frequency(data, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sca3300_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long mask)
+{
+	struct sca3300_data *data = iio_priv(indio_dev);
+	int index;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = sca3300_read_reg(data, chan->address, val);
+		if (ret)
+			return ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		ret = sca3300_get_op_mode(data, &index);
+		if (ret)
+			return ret;
+		switch (chan->type) {
+		case IIO_INCLI:
+			index = data->chip->incli_scale_map[index];
+			*val  = data->chip->incli_scale[index][0];
+			*val2 = data->chip->incli_scale[index][1];
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_ACCEL:
+			index = data->chip->accel_scale_map[index];
+			*val  = data->chip->accel_scale[index][0];
+			*val2 = data->chip->accel_scale[index][1];
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		ret = sca3300_get_op_mode(data, &index);
+		if (ret)
+			return ret;
+		index = data->chip->freq_map[index];
+		*val = data->chip->freq_table[index];
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static irqreturn_t sca3300_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct sca3300_data *data = iio_priv(indio_dev);
+	int bit, ret, val, i = 0;
+	s16 *channels = (s16 *)data->buffer;
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		ret = sca3300_read_reg(data, indio_dev->channels[bit].address, &val);
+		if (ret) {
+			dev_err_ratelimited(&data->spi->dev,
+				"failed to read register, error: %d\n", ret);
+			/* handled, but bailing out due to errors */
+			goto out;
+		}
+		channels[i++] = val;
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+					   iio_get_time_ns(indio_dev));
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * sca3300_init - Device init sequence. See datasheet rev 2 section
+ * 4.2 Start-Up Sequence for details.
+ */
+static int sca3300_init(struct sca3300_data *sca_data,
+			struct iio_dev *indio_dev)
+{
+	int value = 0;
+	int ret;
+	int i;
+
+	ret = sca3300_write_reg(sca_data, SCA3300_REG_MODE,
+				SCA3300_MODE_SW_RESET);
+	if (ret)
+		return ret;
+
+	/*
+	 * Wait 1ms after SW-reset command.
+	 * Wait for the settling of signal paths,
+	 * 15ms for SCA3300 and 25ms for SCL3300,
+	 */
+	usleep_range(26e3, 50e3);
+
+	ret = sca3300_read_reg(sca_data, SCA3300_REG_WHOAMI, &value);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < ARRAY_SIZE(sca3300_chip_tbl); i++) {
+		if (sca3300_chip_tbl[i].chip_id == value)
+			break;
+	}
+	if (i == ARRAY_SIZE(sca3300_chip_tbl)) {
+		dev_err(&sca_data->spi->dev, "unknown chip id %x\n", value);
+		return -ENODEV;
+	}
+
+	sca_data->chip = &sca3300_chip_tbl[i];
+
+	if (sca_data->chip->angle_supported) {
+		ret = sca3300_write_reg(sca_data, SCL3300_REG_ANG_CTRL,
+					SCL3300_ANG_ENABLE);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int sca3300_debugfs_reg_access(struct iio_dev *indio_dev,
+				      unsigned int reg, unsigned int writeval,
+				      unsigned int *readval)
+{
+	struct sca3300_data *data = iio_priv(indio_dev);
+	int value;
+	int ret;
+
+	if (reg > SCA3300_REG_SELBANK)
+		return -EINVAL;
+
+	if (!readval)
+		return sca3300_write_reg(data, reg, writeval);
+
+	ret = sca3300_read_reg(data, reg, &value);
+	if (ret)
+		return ret;
+
+	*readval = value;
+
+	return 0;
+}
+
+static int sca3300_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long mask)
+{
+	struct sca3300_data *data = iio_priv(indio_dev);
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_INCLI:
+			*vals = (const int *)data->chip->incli_scale;
+			*length = data->chip->num_incli_scales;
+			*type = IIO_VAL_INT_PLUS_MICRO;
+			return IIO_AVAIL_LIST;
+		case IIO_ACCEL:
+			*vals = (const int *)data->chip->accel_scale;
+			*length = data->chip->num_accel_scales;
+			*type = IIO_VAL_INT_PLUS_MICRO;
+			return IIO_AVAIL_LIST;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		*vals = (const int *)data->chip->freq_table;
+		*length = data->chip->num_freqs;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info sca3300_info = {
+	.read_raw = sca3300_read_raw,
+	.write_raw = sca3300_write_raw,
+	.debugfs_reg_access = &sca3300_debugfs_reg_access,
+	.read_avail = sca3300_read_avail,
+};
+
+static int sca3300_probe(struct spi_device *spi)
+{
+	struct sca3300_data *sca_data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*sca_data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	sca_data = iio_priv(indio_dev);
+	mutex_init(&sca_data->lock);
+	sca_data->spi = spi;
+
+	crc8_populate_msb(sca3300_crc_table, SCA3300_CRC8_POLYNOMIAL);
+
+	indio_dev->info = &sca3300_info;
+
+	ret = sca3300_init(sca_data, indio_dev);
+	if (ret) {
+		dev_err(&spi->dev, "failed to init device, error: %d\n", ret);
+		return ret;
+	}
+
+	indio_dev->name = sca_data->chip->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = sca_data->chip->channels;
+	indio_dev->num_channels = sca_data->chip->num_channels;
+	indio_dev->available_scan_masks = sca_data->chip->scan_masks;
+
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      sca3300_trigger_handler, NULL);
+	if (ret) {
+		dev_err(&spi->dev,
+			"iio triggered buffer setup failed, error: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret) {
+		dev_err(&spi->dev, "iio device register failed, error: %d\n",
+			ret);
+	}
+
+	return ret;
+}
+
+static const struct of_device_id sca3300_dt_ids[] = {
+	{ .compatible = "murata,sca3300"},
+	{ .compatible = "murata,scl3300"},
+	{}
+};
+MODULE_DEVICE_TABLE(of, sca3300_dt_ids);
+
+static struct spi_driver sca3300_driver = {
+	.driver = {
+		.name		= SCA3300_ALIAS,
+		.of_match_table = sca3300_dt_ids,
+	},
+	.probe	= sca3300_probe,
+};
+module_spi_driver(sca3300_driver);
+
+MODULE_AUTHOR("Tomas Melin <tomas.melin@vaisala.com>");
+MODULE_DESCRIPTION("Murata SCA3300 SPI Accelerometer");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/ssp_accel_sensor.c b/drivers/iio/accel/ssp_accel_sensor.c
index c32647abce20..7ca9d0d543e0 100644
--- a/drivers/iio/accel/ssp_accel_sensor.c
+++ b/drivers/iio/accel/ssp_accel_sensor.c
@@ -96,7 +96,6 @@ static int ssp_accel_probe(struct platform_device *pdev)
 	int ret;
 	struct iio_dev *indio_dev;
 	struct ssp_sensor_data *spd;
-	struct iio_buffer *buffer;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*spd));
 	if (!indio_dev)
@@ -108,21 +107,15 @@ static int ssp_accel_probe(struct platform_device *pdev)
 	spd->type = SSP_ACCELEROMETER_SENSOR;
 
 	indio_dev->name = ssp_accel_device_name;
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &ssp_accel_iio_info;
-	indio_dev->modes = INDIO_BUFFER_SOFTWARE;
 	indio_dev->channels = ssp_acc_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ssp_acc_channels);
 	indio_dev->available_scan_masks = ssp_accel_scan_mask;
 
-	buffer = devm_iio_kfifo_allocate(&pdev->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
-	indio_dev->setup_ops = &ssp_accel_buffer_ops;
+	ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev,
+					  &ssp_accel_buffer_ops);
+	if (ret)
+		return ret;
 
 	platform_set_drvdata(pdev, indio_dev);
 
@@ -148,3 +141,4 @@ module_platform_driver(ssp_accel_driver);
 MODULE_AUTHOR("Karol Wrona <k.wrona@samsung.com>");
 MODULE_DESCRIPTION("Samsung sensorhub accelerometers driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_SSP_SENSORS);
diff --git a/drivers/iio/accel/st_accel.h b/drivers/iio/accel/st_accel.h
index 5b13e293cade..5b0f54e33d9e 100644
--- a/drivers/iio/accel/st_accel.h
+++ b/drivers/iio/accel/st_accel.h
@@ -14,30 +14,6 @@
 #include <linux/types.h>
 #include <linux/iio/common/st_sensors.h>
 
-enum st_accel_type {
-	LSM303DLH,
-	LSM303DLHC,
-	LIS3DH,
-	LSM330D,
-	LSM330DL,
-	LSM330DLC,
-	LIS331DLH,
-	LSM303DL,
-	LSM303DLM,
-	LSM330,
-	LSM303AGR,
-	LIS2DH12,
-	LIS3L02DQ,
-	LNG2DM,
-	H3LIS331DL,
-	LIS331DL,
-	LIS3LV02DL,
-	LIS2DW12,
-	LIS3DHH,
-	LIS2DE12,
-	ST_ACCEL_MAX,
-};
-
 #define H3LIS331DL_ACCEL_DEV_NAME	"h3lis331dl_accel"
 #define LIS3LV02DL_ACCEL_DEV_NAME	"lis3lv02dl_accel"
 #define LSM303DLHC_ACCEL_DEV_NAME	"lsm303dlhc_accel"
@@ -59,22 +35,13 @@ enum st_accel_type {
 #define LIS3DHH_ACCEL_DEV_NAME		"lis3dhh"
 #define LIS3DE_ACCEL_DEV_NAME		"lis3de"
 #define LIS2DE12_ACCEL_DEV_NAME		"lis2de12"
+#define LIS2HH12_ACCEL_DEV_NAME		"lis2hh12"
+#define LIS302DL_ACCEL_DEV_NAME		"lis302dl"
+#define SC7A20_ACCEL_DEV_NAME		"sc7a20"
 
-/**
-* struct st_sensors_platform_data - default accel platform data
-* @drdy_int_pin: default accel DRDY is available on INT1 pin.
-*/
-static __maybe_unused const struct st_sensors_platform_data default_accel_pdata = {
-	.drdy_int_pin = 1,
-};
-
-const struct st_sensor_settings *st_accel_get_settings(const char *name);
-int st_accel_common_probe(struct iio_dev *indio_dev);
-void st_accel_common_remove(struct iio_dev *indio_dev);
 
 #ifdef CONFIG_IIO_BUFFER
 int st_accel_allocate_ring(struct iio_dev *indio_dev);
-void st_accel_deallocate_ring(struct iio_dev *indio_dev);
 int st_accel_trig_set_state(struct iio_trigger *trig, bool state);
 #define ST_ACCEL_TRIGGER_SET_STATE (&st_accel_trig_set_state)
 #else /* CONFIG_IIO_BUFFER */
@@ -82,9 +49,6 @@ static inline int st_accel_allocate_ring(struct iio_dev *indio_dev)
 {
 	return 0;
 }
-static inline void st_accel_deallocate_ring(struct iio_dev *indio_dev)
-{
-}
 #define ST_ACCEL_TRIGGER_SET_STATE NULL
 #endif /* CONFIG_IIO_BUFFER */
 
diff --git a/drivers/iio/accel/st_accel_buffer.c b/drivers/iio/accel/st_accel_buffer.c
index 9f2b40474b8e..b2977ae19b69 100644
--- a/drivers/iio/accel/st_accel_buffer.c
+++ b/drivers/iio/accel/st_accel_buffer.c
@@ -7,16 +7,10 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
-#include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/trigger.h>
 #include <linux/iio/triggered_buffer.h>
 
 #include <linux/iio/common/st_sensors.h>
@@ -33,15 +27,10 @@ static int st_accel_buffer_postenable(struct iio_dev *indio_dev)
 {
 	int err;
 
-	err = iio_triggered_buffer_postenable(indio_dev);
+	err = st_sensors_set_axis_enable(indio_dev, indio_dev->active_scan_mask[0]);
 	if (err < 0)
 		return err;
 
-	err = st_sensors_set_axis_enable(indio_dev,
-					 (u8)indio_dev->active_scan_mask[0]);
-	if (err < 0)
-		goto st_accel_buffer_predisable;
-
 	err = st_sensors_set_enable(indio_dev, true);
 	if (err < 0)
 		goto st_accel_buffer_enable_all_axis;
@@ -50,27 +39,19 @@ static int st_accel_buffer_postenable(struct iio_dev *indio_dev)
 
 st_accel_buffer_enable_all_axis:
 	st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
-st_accel_buffer_predisable:
-	iio_triggered_buffer_predisable(indio_dev);
 	return err;
 }
 
 static int st_accel_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int err, err2;
+	int err;
 
 	err = st_sensors_set_enable(indio_dev, false);
 	if (err < 0)
-		goto st_accel_buffer_predisable;
-
-	err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
-
-st_accel_buffer_predisable:
-	err2 = iio_triggered_buffer_predisable(indio_dev);
-	if (!err)
-		err = err2;
+		return err;
 
-	return err;
+	return st_sensors_set_axis_enable(indio_dev,
+					  ST_SENSORS_ENABLE_ALL_AXIS);
 }
 
 static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = {
@@ -80,15 +61,6 @@ static const struct iio_buffer_setup_ops st_accel_buffer_setup_ops = {
 
 int st_accel_allocate_ring(struct iio_dev *indio_dev)
 {
-	return iio_triggered_buffer_setup(indio_dev, NULL,
-		&st_sensors_trigger_handler, &st_accel_buffer_setup_ops);
+	return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
+		NULL, &st_sensors_trigger_handler, &st_accel_buffer_setup_ops);
 }
-
-void st_accel_deallocate_ring(struct iio_dev *indio_dev)
-{
-	iio_triggered_buffer_cleanup(indio_dev);
-}
-
-MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics accelerometers buffer");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/accel/st_accel_core.c b/drivers/iio/accel/st_accel_core.c
index 7320275c7e56..c8c8eb15c34e 100644
--- a/drivers/iio/accel/st_accel_core.c
+++ b/drivers/iio/accel/st_accel_core.c
@@ -9,17 +9,13 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/sysfs.h>
 #include <linux/slab.h>
 #include <linux/acpi.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/irq.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/trigger.h>
-#include <linux/iio/buffer.h>
 
 #include <linux/iio/common/st_sensors.h>
 #include "st_accel.h"
@@ -41,51 +37,74 @@
 #define ST_ACCEL_FS_AVL_200G			200
 #define ST_ACCEL_FS_AVL_400G			400
 
+static const struct iio_mount_matrix *
+st_accel_get_mount_matrix(const struct iio_dev *indio_dev,
+			  const struct iio_chan_spec *chan)
+{
+	struct st_sensor_data *adata = iio_priv(indio_dev);
+
+	return &adata->mount_matrix;
+}
+
+static const struct iio_chan_spec_ext_info st_accel_mount_matrix_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_accel_get_mount_matrix),
+	{ }
+};
+
 static const struct iio_chan_spec st_accel_8bit_channels[] = {
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 8, 8,
-			ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1),
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+			ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1,
+			st_accel_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 8, 8,
-			ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1),
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+			ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1,
+			st_accel_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 8, 8,
-			ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1),
+			ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1,
+			st_accel_mount_matrix_ext_info),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
 static const struct iio_chan_spec st_accel_12bit_channels[] = {
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16,
-			ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+			ST_ACCEL_DEFAULT_OUT_X_L_ADDR,
+			st_accel_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16,
-			ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+			ST_ACCEL_DEFAULT_OUT_Y_L_ADDR,
+			st_accel_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16,
-			ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
+			ST_ACCEL_DEFAULT_OUT_Z_L_ADDR,
+			st_accel_mount_matrix_ext_info),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
 static const struct iio_chan_spec st_accel_16bit_channels[] = {
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
-			ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+			ST_ACCEL_DEFAULT_OUT_X_L_ADDR,
+			st_accel_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
-			ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
+			ST_ACCEL_DEFAULT_OUT_Y_L_ADDR,
+			st_accel_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ACCEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
-			ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
+			ST_ACCEL_DEFAULT_OUT_Z_L_ADDR,
+			st_accel_mount_matrix_ext_info),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
@@ -425,6 +444,7 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
 		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
 		.sensors_supported = {
 			[0] = LIS331DL_ACCEL_DEV_NAME,
+			[1] = LIS302DL_ACCEL_DEV_NAME,
 		},
 		.ch = (struct iio_chan_spec *)st_accel_8bit_channels,
 		.odr = {
@@ -904,6 +924,258 @@ static const struct st_sensor_settings st_accel_sensors_settings[] = {
 		.multi_read_bit = true,
 		.bootime = 2,
 	},
+	{
+		.wai = 0x41,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = LIS2HH12_ACCEL_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_accel_16bit_channels,
+		.odr = {
+			.addr = 0x20,
+			.mask = 0x70,
+			.odr_avl = {
+				{ .hz = 10, .value = 0x01, },
+				{ .hz = 50, .value = 0x02, },
+				{ .hz = 100, .value = 0x03, },
+				{ .hz = 200, .value = 0x04, },
+				{ .hz = 400, .value = 0x05, },
+				{ .hz = 800, .value = 0x06, },
+			},
+		},
+		.pw = {
+			.addr = 0x20,
+			.mask = 0x70,
+			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+		},
+		.enable_axis = {
+			.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+			.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+		},
+		.fs = {
+			.addr = 0x23,
+			.mask = 0x30,
+			.fs_avl = {
+				[0] = {
+					.num = ST_ACCEL_FS_AVL_2G,
+					.value = 0x00,
+					.gain = IIO_G_TO_M_S_2(61),
+				},
+				[1] = {
+					.num = ST_ACCEL_FS_AVL_4G,
+					.value = 0x02,
+					.gain = IIO_G_TO_M_S_2(122),
+				},
+				[2] = {
+					.num = ST_ACCEL_FS_AVL_8G,
+					.value = 0x03,
+					.gain = IIO_G_TO_M_S_2(244),
+				},
+			},
+		},
+		.bdu = {
+			.addr = 0x20,
+			.mask = 0x08,
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x22,
+				.mask = 0x01,
+			},
+			.int2 = {
+				.addr = 0x25,
+				.mask = 0x01,
+			},
+			.addr_ihl = 0x24,
+			.mask_ihl = 0x02,
+			.stat_drdy = {
+				.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+				.mask = 0x07,
+			},
+		},
+		.sim = {
+			.addr = 0x23,
+			.value = BIT(0),
+		},
+		.multi_read_bit = true,
+		.bootime = 2,
+	},
+	{
+		.wai = 0x49,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = LSM9DS0_IMU_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_accel_16bit_channels,
+		.odr = {
+			.addr = 0x20,
+			.mask = GENMASK(7, 4),
+			.odr_avl = {
+				{ 3, 0x01, },
+				{ 6, 0x02, },
+				{ 12, 0x03, },
+				{ 25, 0x04, },
+				{ 50, 0x05, },
+				{ 100, 0x06, },
+				{ 200, 0x07, },
+				{ 400, 0x08, },
+				{ 800, 0x09, },
+				{ 1600, 0x0a, },
+			},
+		},
+		.pw = {
+			.addr = 0x20,
+			.mask = GENMASK(7, 4),
+			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+		},
+		.enable_axis = {
+			.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+			.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+		},
+		.fs = {
+			.addr = 0x21,
+			.mask = GENMASK(5, 3),
+			.fs_avl = {
+				[0] = {
+					.num = ST_ACCEL_FS_AVL_2G,
+					.value = 0x00,
+					.gain = IIO_G_TO_M_S_2(61),
+				},
+				[1] = {
+					.num = ST_ACCEL_FS_AVL_4G,
+					.value = 0x01,
+					.gain = IIO_G_TO_M_S_2(122),
+				},
+				[2] = {
+					.num = ST_ACCEL_FS_AVL_6G,
+					.value = 0x02,
+					.gain = IIO_G_TO_M_S_2(183),
+				},
+				[3] = {
+					.num = ST_ACCEL_FS_AVL_8G,
+					.value = 0x03,
+					.gain = IIO_G_TO_M_S_2(244),
+				},
+				[4] = {
+					.num = ST_ACCEL_FS_AVL_16G,
+					.value = 0x04,
+					.gain = IIO_G_TO_M_S_2(732),
+				},
+			},
+		},
+		.bdu = {
+			.addr = 0x20,
+			.mask = BIT(3),
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x22,
+				.mask = BIT(2),
+			},
+			.int2 = {
+				.addr = 0x23,
+				.mask = BIT(3),
+			},
+			.stat_drdy = {
+				.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+				.mask = GENMASK(2, 0),
+			},
+		},
+		.sim = {
+			.addr = 0x21,
+			.value = BIT(0),
+		},
+		.multi_read_bit = true,
+		.bootime = 2,
+	},
+	{
+		/*
+		 * Not an ST part. Register-compatible with the LIS2DH, even
+		 * though the WAI value is different.
+		 */
+		.wai = 0x11,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = SC7A20_ACCEL_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_accel_12bit_channels,
+		.odr = {
+			.addr = 0x20,
+			.mask = 0xf0,
+			.odr_avl = {
+				{ .hz = 1, .value = 0x01, },
+				{ .hz = 10, .value = 0x02, },
+				{ .hz = 25, .value = 0x03, },
+				{ .hz = 50, .value = 0x04, },
+				{ .hz = 100, .value = 0x05, },
+				{ .hz = 200, .value = 0x06, },
+				{ .hz = 400, .value = 0x07, },
+				{ .hz = 1600, .value = 0x08, },
+			},
+		},
+		.pw = {
+			.addr = 0x20,
+			.mask = 0xf0,
+			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+		},
+		.enable_axis = {
+			.addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
+			.mask = ST_SENSORS_DEFAULT_AXIS_MASK,
+		},
+		.fs = {
+			.addr = 0x23,
+			.mask = 0x30,
+			.fs_avl = {
+				[0] = {
+					.num = ST_ACCEL_FS_AVL_2G,
+					.value = 0x00,
+					.gain = IIO_G_TO_M_S_2(1000),
+				},
+				[1] = {
+					.num = ST_ACCEL_FS_AVL_4G,
+					.value = 0x01,
+					.gain = IIO_G_TO_M_S_2(2000),
+				},
+				[2] = {
+					.num = ST_ACCEL_FS_AVL_8G,
+					.value = 0x02,
+					.gain = IIO_G_TO_M_S_2(4000),
+				},
+				[3] = {
+					.num = ST_ACCEL_FS_AVL_16G,
+					.value = 0x03,
+					.gain = IIO_G_TO_M_S_2(12000),
+				},
+			},
+		},
+		.bdu = {
+			.addr = 0x23,
+			.mask = 0x80,
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x22,
+				.mask = 0x10,
+			},
+			.addr_ihl = 0x25,
+			.mask_ihl = 0x02,
+			.stat_drdy = {
+				.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+				.mask = 0x07,
+			},
+		},
+		.sim = {
+			.addr = 0x23,
+			.value = BIT(0),
+		},
+		.multi_read_bit = true,
+		.bootime = 2,
+	},
+};
+
+/* Default accel DRDY is available on INT1 pin */
+static const struct st_sensors_platform_data default_accel_pdata = {
+	.drdy_int_pin = 1,
 };
 
 static int st_accel_read_raw(struct iio_dev *indio_dev,
@@ -938,28 +1210,21 @@ read_error:
 static int st_accel_write_raw(struct iio_dev *indio_dev,
 		struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE: {
 		int gain;
 
 		gain = val * 1000000 + val2;
-		err = st_sensors_set_fullscale_by_gain(indio_dev, gain);
-		break;
+		return st_sensors_set_fullscale_by_gain(indio_dev, gain);
 	}
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
+
+		return st_sensors_set_odr(indio_dev, val);
 	default:
 		return -EINVAL;
 	}
-
-	return err;
 }
 
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
@@ -993,25 +1258,10 @@ static const struct iio_trigger_ops st_accel_trigger_ops = {
 #endif
 
 #ifdef CONFIG_ACPI
-static const struct iio_mount_matrix *
-get_mount_matrix(const struct iio_dev *indio_dev,
-		 const struct iio_chan_spec *chan)
-{
-	struct st_sensor_data *adata = iio_priv(indio_dev);
-
-	return adata->mount_matrix;
-}
-
-static const struct iio_chan_spec_ext_info mount_matrix_ext_info[] = {
-	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, get_mount_matrix),
-	{ },
-};
-
 /* Read ST-specific _ONT orientation data from ACPI and generate an
  * appropriate mount matrix.
  */
-static int apply_acpi_orientation(struct iio_dev *indio_dev,
-				  struct iio_chan_spec *channels)
+static int apply_acpi_orientation(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *adata = iio_priv(indio_dev);
 	struct acpi_buffer buffer = {ACPI_ALLOCATE_BUFFER, NULL};
@@ -1037,7 +1287,7 @@ static int apply_acpi_orientation(struct iio_dev *indio_dev,
 	};
 
 
-	adev = ACPI_COMPANION(adata->dev);
+	adev = ACPI_COMPANION(indio_dev->dev.parent);
 	if (!adev)
 		return 0;
 
@@ -1100,14 +1350,6 @@ static int apply_acpi_orientation(struct iio_dev *indio_dev,
 	}
 
 	/* Convert our integer matrix to a string-based iio_mount_matrix */
-	adata->mount_matrix = devm_kmalloc(&indio_dev->dev,
-					   sizeof(*adata->mount_matrix),
-					   GFP_KERNEL);
-	if (!adata->mount_matrix) {
-		ret = -ENOMEM;
-		goto out;
-	}
-
 	for (i = 0; i < 3; i++) {
 		for (j = 0; j < 3; j++) {
 			int matrix_val = final_ont[i][j];
@@ -1126,26 +1368,25 @@ static int apply_acpi_orientation(struct iio_dev *indio_dev,
 			default:
 				goto out;
 			}
-			adata->mount_matrix->rotation[i * 3 + j] = str_value;
+			adata->mount_matrix.rotation[i * 3 + j] = str_value;
 		}
 	}
 
-	/* Expose the mount matrix via ext_info */
-	for (i = 0; i < indio_dev->num_channels; i++)
-		channels[i].ext_info = mount_matrix_ext_info;
-
 	ret = 0;
 	dev_info(&indio_dev->dev, "computed mount matrix from ACPI\n");
 
 out:
 	kfree(buffer.pointer);
+	if (ret)
+		dev_dbg(&indio_dev->dev,
+			"failed to apply ACPI orientation data: %d\n", ret);
+
 	return ret;
 }
 #else /* !CONFIG_ACPI */
-static int apply_acpi_orientation(struct iio_dev *indio_dev,
-				  struct iio_chan_spec *channels)
+static int apply_acpi_orientation(struct iio_dev *indio_dev)
 {
-	return 0;
+	return -EINVAL;
 }
 #endif
 
@@ -1165,47 +1406,38 @@ const struct st_sensor_settings *st_accel_get_settings(const char *name)
 
 	return &st_accel_sensors_settings[index];
 }
-EXPORT_SYMBOL(st_accel_get_settings);
+EXPORT_SYMBOL_NS(st_accel_get_settings, IIO_ST_SENSORS);
 
 int st_accel_common_probe(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *adata = iio_priv(indio_dev);
-	struct st_sensors_platform_data *pdata =
-		(struct st_sensors_platform_data *)adata->dev->platform_data;
-	struct iio_chan_spec *channels;
-	size_t channels_size;
+	struct device *parent = indio_dev->dev.parent;
+	struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
 	int err;
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &accel_info;
 
-	err = st_sensors_power_enable(indio_dev);
-	if (err)
-		return err;
-
 	err = st_sensors_verify_id(indio_dev);
 	if (err < 0)
-		goto st_accel_power_off;
+		return err;
 
 	adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
+	indio_dev->channels = adata->sensor_settings->ch;
 	indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 
-	channels_size = indio_dev->num_channels * sizeof(struct iio_chan_spec);
-	channels = devm_kmemdup(&indio_dev->dev,
-				adata->sensor_settings->ch,
-				channels_size, GFP_KERNEL);
-	if (!channels) {
-		err = -ENOMEM;
-		goto st_accel_power_off;
+	/*
+	 * First try specific ACPI methods to retrieve orientation then try the
+	 * generic function.
+	 */
+	err = apply_acpi_orientation(indio_dev);
+	if (err) {
+		err = iio_read_mount_matrix(parent, &adata->mount_matrix);
+		if (err)
+			return err;
 	}
 
-	if (apply_acpi_orientation(indio_dev, channels))
-		dev_warn(&indio_dev->dev,
-			 "failed to apply ACPI orientation data: %d\n", err);
-
-	indio_dev->channels = channels;
-	adata->current_fullscale = (struct st_sensor_fullscale_avl *)
-					&adata->sensor_settings->fs.fs_avl[0];
+	adata->current_fullscale = &adata->sensor_settings->fs.fs_avl[0];
 	adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
 
 	if (!pdata)
@@ -1213,54 +1445,24 @@ int st_accel_common_probe(struct iio_dev *indio_dev)
 
 	err = st_sensors_init_sensor(indio_dev, pdata);
 	if (err < 0)
-		goto st_accel_power_off;
+		return err;
 
 	err = st_accel_allocate_ring(indio_dev);
 	if (err < 0)
-		goto st_accel_power_off;
+		return err;
 
 	if (adata->irq > 0) {
 		err = st_sensors_allocate_trigger(indio_dev,
 						 ST_ACCEL_TRIGGER_OPS);
 		if (err < 0)
-			goto st_accel_probe_trigger_error;
+			return err;
 	}
 
-	err = iio_device_register(indio_dev);
-	if (err)
-		goto st_accel_device_register_error;
-
-	dev_info(&indio_dev->dev, "registered accelerometer %s\n",
-		 indio_dev->name);
-
-	return 0;
-
-st_accel_device_register_error:
-	if (adata->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-st_accel_probe_trigger_error:
-	st_accel_deallocate_ring(indio_dev);
-st_accel_power_off:
-	st_sensors_power_disable(indio_dev);
-
-	return err;
-}
-EXPORT_SYMBOL(st_accel_common_probe);
-
-void st_accel_common_remove(struct iio_dev *indio_dev)
-{
-	struct st_sensor_data *adata = iio_priv(indio_dev);
-
-	st_sensors_power_disable(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (adata->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-
-	st_accel_deallocate_ring(indio_dev);
+	return devm_iio_device_register(parent, indio_dev);
 }
-EXPORT_SYMBOL(st_accel_common_remove);
+EXPORT_SYMBOL_NS(st_accel_common_probe, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/accel/st_accel_i2c.c b/drivers/iio/accel/st_accel_i2c.c
index 849cf74153c4..45ee0ddc133c 100644
--- a/drivers/iio/accel/st_accel_i2c.c
+++ b/drivers/iio/accel/st_accel_i2c.c
@@ -9,11 +9,10 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/acpi.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
-#include <linux/property.h>
 
 #include <linux/iio/common/st_sensors_i2c.h>
 #include "st_accel.h"
@@ -104,6 +103,18 @@ static const struct of_device_id st_accel_of_match[] = {
 		.compatible = "st,lis2de12",
 		.data = LIS2DE12_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis2hh12",
+		.data = LIS2HH12_ACCEL_DEV_NAME,
+	},
+	{
+		.compatible = "st,lis302dl",
+		.data = LIS302DL_ACCEL_DEV_NAME,
+	},
+	{
+		.compatible = "silan,sc7a20",
+		.data = SC7A20_ACCEL_DEV_NAME,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -138,6 +149,9 @@ static const struct i2c_device_id st_accel_id_table[] = {
 	{ LIS2DW12_ACCEL_DEV_NAME },
 	{ LIS3DE_ACCEL_DEV_NAME },
 	{ LIS2DE12_ACCEL_DEV_NAME },
+	{ LIS2HH12_ACCEL_DEV_NAME },
+	{ LIS302DL_ACCEL_DEV_NAME },
+	{ SC7A20_ACCEL_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_accel_id_table);
@@ -147,12 +161,9 @@ static int st_accel_i2c_probe(struct i2c_client *client)
 	const struct st_sensor_settings *settings;
 	struct st_sensor_data *adata;
 	struct iio_dev *indio_dev;
-	const char *match;
 	int ret;
 
-	match = device_get_match_data(&client->dev);
-	if (match)
-		strlcpy(client->name, match, sizeof(client->name));
+	st_sensors_dev_name_probe(&client->dev, client->name, sizeof(client->name));
 
 	settings = st_accel_get_settings(client->name);
 	if (!settings) {
@@ -172,18 +183,11 @@ static int st_accel_i2c_probe(struct i2c_client *client)
 	if (ret < 0)
 		return ret;
 
-	ret = st_accel_common_probe(indio_dev);
-	if (ret < 0)
+	ret = st_sensors_power_enable(indio_dev);
+	if (ret)
 		return ret;
 
-	return 0;
-}
-
-static int st_accel_i2c_remove(struct i2c_client *client)
-{
-	st_accel_common_remove(i2c_get_clientdata(client));
-
-	return 0;
+	return st_accel_common_probe(indio_dev);
 }
 
 static struct i2c_driver st_accel_driver = {
@@ -193,7 +197,6 @@ static struct i2c_driver st_accel_driver = {
 		.acpi_match_table = ACPI_PTR(st_accel_acpi_match),
 	},
 	.probe_new = st_accel_i2c_probe,
-	.remove = st_accel_i2c_remove,
 	.id_table = st_accel_id_table,
 };
 module_i2c_driver(st_accel_driver);
@@ -201,3 +204,4 @@ module_i2c_driver(st_accel_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics accelerometers i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/accel/st_accel_spi.c b/drivers/iio/accel/st_accel_spi.c
index 568ff1bae0ee..6c0917750288 100644
--- a/drivers/iio/accel/st_accel_spi.c
+++ b/drivers/iio/accel/st_accel_spi.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 
@@ -92,6 +92,10 @@ static const struct of_device_id st_accel_of_match[] = {
 		.compatible = "st,lis3de",
 		.data = LIS3DE_ACCEL_DEV_NAME,
 	},
+	{
+		.compatible = "st,lis302dl",
+		.data = LIS302DL_ACCEL_DEV_NAME,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, st_accel_of_match);
@@ -123,18 +127,11 @@ static int st_accel_spi_probe(struct spi_device *spi)
 	if (err < 0)
 		return err;
 
-	err = st_accel_common_probe(indio_dev);
-	if (err < 0)
+	err = st_sensors_power_enable(indio_dev);
+	if (err)
 		return err;
 
-	return 0;
-}
-
-static int st_accel_spi_remove(struct spi_device *spi)
-{
-	st_accel_common_remove(spi_get_drvdata(spi));
-
-	return 0;
+	return st_accel_common_probe(indio_dev);
 }
 
 static const struct spi_device_id st_accel_id_table[] = {
@@ -154,6 +151,7 @@ static const struct spi_device_id st_accel_id_table[] = {
 	{ LIS2DW12_ACCEL_DEV_NAME },
 	{ LIS3DHH_ACCEL_DEV_NAME },
 	{ LIS3DE_ACCEL_DEV_NAME },
+	{ LIS302DL_ACCEL_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_accel_id_table);
@@ -164,7 +162,6 @@ static struct spi_driver st_accel_driver = {
 		.of_match_table = st_accel_of_match,
 	},
 	.probe = st_accel_spi_probe,
-	.remove = st_accel_spi_remove,
 	.id_table = st_accel_id_table,
 };
 module_spi_driver(st_accel_driver);
@@ -172,3 +169,4 @@ module_spi_driver(st_accel_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics accelerometers spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/accel/stk8312.c b/drivers/iio/accel/stk8312.c
index 58c160ccdee7..7b1d6fb692b3 100644
--- a/drivers/iio/accel/stk8312.c
+++ b/drivers/iio/accel/stk8312.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Sensortek STK8312 3-Axis Accelerometer
  *
  * Copyright (c) 2015, Intel Corporation.
@@ -7,7 +7,6 @@
  * IIO driver for STK8312; 7-bit I2C address: 0x3D.
  */
 
-#include <linux/acpi.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
@@ -103,7 +102,11 @@ struct stk8312_data {
 	u8 mode;
 	struct iio_trigger *dready_trig;
 	bool dready_trigger_on;
-	s8 buffer[16]; /* 3x8-bit channels + 5x8 padding + 64-bit timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		s8 chans[3];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 static IIO_CONST_ATTR(in_accel_scale_available, STK8312_SCALE_AVAIL);
@@ -352,7 +355,7 @@ static int stk8312_read_raw(struct iio_dev *indio_dev,
 			mutex_unlock(&data->lock);
 			return ret;
 		}
-		*val = sign_extend32(ret, 7);
+		*val = sign_extend32(ret, chan->scan_type.realbits - 1);
 		ret = stk8312_set_mode(data,
 				       data->mode & (~STK8312_MODE_ACTIVE));
 		mutex_unlock(&data->lock);
@@ -438,7 +441,7 @@ static irqreturn_t stk8312_trigger_handler(int irq, void *p)
 		ret = i2c_smbus_read_i2c_block_data(data->client,
 						    STK8312_REG_XOUT,
 						    STK8312_ALL_CHANNEL_SIZE,
-						    data->buffer);
+						    data->scan.chans);
 		if (ret < STK8312_ALL_CHANNEL_SIZE) {
 			dev_err(&data->client->dev, "register read failed\n");
 			mutex_unlock(&data->lock);
@@ -452,12 +455,12 @@ static irqreturn_t stk8312_trigger_handler(int irq, void *p)
 				mutex_unlock(&data->lock);
 				goto err;
 			}
-			data->buffer[i++] = ret;
+			data->scan.chans[i++] = ret;
 		}
 	}
 	mutex_unlock(&data->lock);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -492,8 +495,6 @@ static int stk8312_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops stk8312_buffer_setup_ops = {
 	.preenable   = stk8312_buffer_preenable,
-	.postenable  = iio_triggered_buffer_postenable,
-	.predisable  = iio_triggered_buffer_predisable,
 	.postdisable = stk8312_buffer_postdisable,
 };
 
@@ -515,7 +516,6 @@ static int stk8312_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &stk8312_info;
 	indio_dev->name = STK8312_DRIVER_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -555,13 +555,12 @@ static int stk8312_probe(struct i2c_client *client,
 		data->dready_trig = devm_iio_trigger_alloc(&client->dev,
 							   "%s-dev%d",
 							   indio_dev->name,
-							   indio_dev->id);
+							   iio_device_id(indio_dev));
 		if (!data->dready_trig) {
 			ret = -ENOMEM;
 			goto err_power_off;
 		}
 
-		data->dready_trig->dev.parent = &client->dev;
 		data->dready_trig->ops = &stk8312_trigger_ops;
 		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
 		ret = iio_trigger_register(data->dready_trig);
@@ -598,7 +597,7 @@ err_power_off:
 	return ret;
 }
 
-static int stk8312_remove(struct i2c_client *client)
+static void stk8312_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct stk8312_data *data = iio_priv(indio_dev);
@@ -609,10 +608,9 @@ static int stk8312_remove(struct i2c_client *client)
 	if (data->dready_trig)
 		iio_trigger_unregister(data->dready_trig);
 
-	return stk8312_set_mode(data, STK8312_MODE_STANDBY);
+	stk8312_set_mode(data, STK8312_MODE_STANDBY);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int stk8312_suspend(struct device *dev)
 {
 	struct stk8312_data *data;
@@ -631,31 +629,21 @@ static int stk8312_resume(struct device *dev)
 	return stk8312_set_mode(data, data->mode | STK8312_MODE_ACTIVE);
 }
 
-static SIMPLE_DEV_PM_OPS(stk8312_pm_ops, stk8312_suspend, stk8312_resume);
-
-#define STK8312_PM_OPS (&stk8312_pm_ops)
-#else
-#define STK8312_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(stk8312_pm_ops, stk8312_suspend,
+				stk8312_resume);
 
 static const struct i2c_device_id stk8312_i2c_id[] = {
-	{"STK8312", 0},
+	/* Deprecated in favour of lowercase form */
+	{ "STK8312", 0 },
+	{ "stk8312", 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, stk8312_i2c_id);
 
-static const struct acpi_device_id stk8312_acpi_id[] = {
-	{"STK8312", 0},
-	{}
-};
-
-MODULE_DEVICE_TABLE(acpi, stk8312_acpi_id);
-
 static struct i2c_driver stk8312_driver = {
 	.driver = {
 		.name = STK8312_DRIVER_NAME,
-		.pm = STK8312_PM_OPS,
-		.acpi_match_table = ACPI_PTR(stk8312_acpi_id),
+		.pm = pm_sleep_ptr(&stk8312_pm_ops),
 	},
 	.probe =            stk8312_probe,
 	.remove =           stk8312_remove,
diff --git a/drivers/iio/accel/stk8ba50.c b/drivers/iio/accel/stk8ba50.c
index c70ddec29eb4..2f5e4ab2a6e7 100644
--- a/drivers/iio/accel/stk8ba50.c
+++ b/drivers/iio/accel/stk8ba50.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Sensortek STK8BA50 3-Axis Accelerometer
  *
  * Copyright (c) 2015, Intel Corporation.
@@ -91,12 +91,11 @@ struct stk8ba50_data {
 	u8 sample_rate_idx;
 	struct iio_trigger *dready_trig;
 	bool dready_trigger_on;
-	/*
-	 * 3 x 16-bit channels (10-bit data, 6-bit padding) +
-	 * 1 x 16 padding +
-	 * 4 x 16 64-bit timestamp
-	 */
-	s16 buffer[8];
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		s16 chans[3];
+		s64 timetamp __aligned(8);
+	} scan;
 };
 
 #define STK8BA50_ACCEL_CHANNEL(index, reg, axis) {			\
@@ -228,7 +227,8 @@ static int stk8ba50_read_raw(struct iio_dev *indio_dev,
 			mutex_unlock(&data->lock);
 			return -EINVAL;
 		}
-		*val = sign_extend32(ret >> STK8BA50_DATA_SHIFT, 9);
+		*val = sign_extend32(ret >> chan->scan_type.shift,
+				     chan->scan_type.realbits - 1);
 		stk8ba50_set_power(data, STK8BA50_MODE_SUSPEND);
 		mutex_unlock(&data->lock);
 		return IIO_VAL_INT;
@@ -324,7 +324,7 @@ static irqreturn_t stk8ba50_trigger_handler(int irq, void *p)
 		ret = i2c_smbus_read_i2c_block_data(data->client,
 						    STK8BA50_REG_XOUT,
 						    STK8BA50_ALL_CHANNEL_SIZE,
-						    (u8 *)data->buffer);
+						    (u8 *)data->scan.chans);
 		if (ret < STK8BA50_ALL_CHANNEL_SIZE) {
 			dev_err(&data->client->dev, "register read failed\n");
 			goto err;
@@ -337,10 +337,10 @@ static irqreturn_t stk8ba50_trigger_handler(int irq, void *p)
 			if (ret < 0)
 				goto err;
 
-			data->buffer[i++] = ret;
+			data->scan.chans[i++] = ret;
 		}
 	}
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 err:
 	mutex_unlock(&data->lock);
@@ -376,8 +376,6 @@ static int stk8ba50_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops stk8ba50_buffer_setup_ops = {
 	.preenable   = stk8ba50_buffer_preenable,
-	.postenable  = iio_triggered_buffer_postenable,
-	.predisable  = iio_triggered_buffer_predisable,
 	.postdisable = stk8ba50_buffer_postdisable,
 };
 
@@ -399,7 +397,6 @@ static int stk8ba50_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &stk8ba50_info;
 	indio_dev->name = STK8BA50_DRIVER_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -451,13 +448,12 @@ static int stk8ba50_probe(struct i2c_client *client,
 		data->dready_trig = devm_iio_trigger_alloc(&client->dev,
 							   "%s-dev%d",
 							   indio_dev->name,
-							   indio_dev->id);
+							   iio_device_id(indio_dev));
 		if (!data->dready_trig) {
 			ret = -ENOMEM;
 			goto err_power_off;
 		}
 
-		data->dready_trig->dev.parent = &client->dev;
 		data->dready_trig->ops = &stk8ba50_trigger_ops;
 		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
 		ret = iio_trigger_register(data->dready_trig);
@@ -494,7 +490,7 @@ err_power_off:
 	return ret;
 }
 
-static int stk8ba50_remove(struct i2c_client *client)
+static void stk8ba50_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct stk8ba50_data *data = iio_priv(indio_dev);
@@ -505,10 +501,9 @@ static int stk8ba50_remove(struct i2c_client *client)
 	if (data->dready_trig)
 		iio_trigger_unregister(data->dready_trig);
 
-	return stk8ba50_set_power(data, STK8BA50_MODE_SUSPEND);
+	stk8ba50_set_power(data, STK8BA50_MODE_SUSPEND);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int stk8ba50_suspend(struct device *dev)
 {
 	struct stk8ba50_data *data;
@@ -527,12 +522,8 @@ static int stk8ba50_resume(struct device *dev)
 	return stk8ba50_set_power(data, STK8BA50_MODE_NORMAL);
 }
 
-static SIMPLE_DEV_PM_OPS(stk8ba50_pm_ops, stk8ba50_suspend, stk8ba50_resume);
-
-#define STK8BA50_PM_OPS (&stk8ba50_pm_ops)
-#else
-#define STK8BA50_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(stk8ba50_pm_ops, stk8ba50_suspend,
+				stk8ba50_resume);
 
 static const struct i2c_device_id stk8ba50_i2c_id[] = {
 	{"stk8ba50", 0},
@@ -550,7 +541,7 @@ MODULE_DEVICE_TABLE(acpi, stk8ba50_acpi_id);
 static struct i2c_driver stk8ba50_driver = {
 	.driver = {
 		.name = "stk8ba50",
-		.pm = STK8BA50_PM_OPS,
+		.pm = pm_sleep_ptr(&stk8ba50_pm_ops),
 		.acpi_match_table = ACPI_PTR(stk8ba50_acpi_id),
 	},
 	.probe =            stk8ba50_probe,
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 82e33082958c..791612ca6012 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -39,6 +39,18 @@ config AD7124
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad7124.
 
+config AD7192
+	tristate "Analog Devices AD7190 AD7192 AD7193 AD7195 ADC driver"
+	depends on SPI
+	select AD_SIGMA_DELTA
+	help
+	  Say yes here to build support for Analog Devices AD7190,
+	  AD7192, AD7193 or AD7195 SPI analog to digital converters (ADC).
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7192.
+
 config AD7266
 	tristate "Analog Devices AD7265/AD7266 ADC driver"
 	depends on SPI_MASTER
@@ -52,6 +64,17 @@ config AD7266
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad7266.
 
+config AD7280
+	tristate "Analog Devices AD7280A Lithium Ion Battery Monitoring System"
+	depends on SPI
+	select CRC8
+	help
+	  Say yes here to build support for Analog Devices AD7280A
+	  Lithium Ion Battery Monitoring System.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7280a
+
 config AD7291
 	tristate "Analog Devices AD7291 ADC driver"
 	depends on I2C
@@ -85,7 +108,7 @@ config AD7298
 	  module will be called ad7298.
 
 config AD7476
-	tristate "Analog Devices AD7476 1-channel ADCs driver and other similar devices from AD an TI"
+	tristate "Analog Devices AD7476 1-channel ADCs driver and other similar devices from AD and TI"
 	depends on SPI
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
@@ -234,6 +257,43 @@ config AD799X
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad799x.
 
+config AD9467
+	tristate "Analog Devices AD9467 High Speed ADC driver"
+	depends on SPI
+	depends on ADI_AXI_ADC
+	help
+	  Say yes here to build support for Analog Devices:
+	  * AD9467 16-Bit, 200 MSPS/250 MSPS Analog-to-Digital Converter
+
+	  The driver requires the assistance of the AXI ADC IP core to operate,
+	  since SPI is used for configuration only, while data has to be
+	  streamed into memory via DMA.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called ad9467.
+
+config ADI_AXI_ADC
+	tristate "Analog Devices Generic AXI ADC IP core driver"
+	select IIO_BUFFER
+	select IIO_BUFFER_HW_CONSUMER
+	select IIO_BUFFER_DMAENGINE
+	depends on HAS_IOMEM
+	depends on OF
+	help
+	  Say yes here to build support for Analog Devices Generic
+	  AXI ADC IP core. The IP core is used for interfacing with
+	  analog-to-digital (ADC) converters that require either a high-speed
+	  serial interface (JESD204B/C) or a source synchronous parallel
+	  interface (LVDS/CMOS).
+	  Typically (for such devices) SPI will be used for configuration only,
+	  while this IP core handles the streaming of data into memory via DMA.
+
+	  Link: https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
+	  If unsure, say N (but it's safe to say "Y").
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called adi-axi-adc.
+
 config ASPEED_ADC
 	tristate "Aspeed ADC"
 	depends on ARCH_ASPEED || COMPILE_TEST
@@ -247,8 +307,8 @@ config ASPEED_ADC
 
 config AT91_ADC
 	tristate "Atmel AT91 ADC"
-	depends on ARCH_AT91
-	depends on INPUT && SYSFS
+	depends on ARCH_AT91 || COMPILE_TEST
+	depends on INPUT && SYSFS && OF
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
@@ -293,7 +353,7 @@ config AXP288_ADC
 
 config BCM_IPROC_ADC
 	tristate "Broadcom IPROC ADC driver"
-	depends on ARCH_BCM_IPROC || COMPILE_TEST
+	depends on (ARCH_BCM_IPROC && OF) || COMPILE_TEST
 	depends on MFD_SYSCON
 	default ARCH_BCM_CYGNUS
 	help
@@ -305,7 +365,7 @@ config BCM_IPROC_ADC
 
 config BERLIN2_ADC
 	tristate "Marvell Berlin2 ADC driver"
-	depends on ARCH_BERLIN
+	depends on ARCH_BERLIN || COMPILE_TEST
 	help
 	  Marvell Berlin2 ADC driver. This ADC has 8 channels, with one used for
 	  temperature measurement.
@@ -357,7 +417,6 @@ config DLN2_ADC
 
 config ENVELOPE_DETECTOR
 	tristate "Envelope detector using a DAC and a comparator"
-	depends on OF
 	help
 	  Say yes here to build support for an envelope detector using a DAC
 	  and a comparator.
@@ -381,9 +440,9 @@ config EXYNOS_ADC
 	depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || ARCH_S5PV210 || (OF && COMPILE_TEST)
 	depends on HAS_IOMEM
 	help
-	  Core support for the ADC block found in the Samsung EXYNOS series
-	  of SoCs for drivers such as the touchscreen and hwmon to use to share
-	  this resource.
+	  Driver for the ADC block found in the Samsung S3C (S3C2410, S3C2416,
+	  S3C2440, S3C2443, S3C6410), S5Pv210 and Exynos SoCs.
+	  Choose Y here only if you build for such Samsung SoC.
 
 	  To compile this driver as a module, choose M here: the module will be
 	  called exynos_adc.
@@ -453,6 +512,7 @@ config INA2XX_ADC
 config INGENIC_ADC
 	tristate "Ingenic JZ47xx SoCs ADC driver"
 	depends on MIPS || COMPILE_TEST
+	select IIO_BUFFER
 	help
 	  Say yes here to build support for the Ingenic JZ47xx SoCs ADC unit.
 
@@ -480,6 +540,16 @@ config IMX7D_ADC
 	  This driver can also be built as a module. If so, the module will be
 	  called imx7d_adc.
 
+config IMX8QXP_ADC
+	tristate "NXP IMX8QXP ADC driver"
+	depends on ARCH_MXC || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  Say yes here to build support for IMX8QXP ADC.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called imx8qxp-adc.
+
 config LP8788_ADC
 	tristate "LP8788 ADC driver"
 	depends on MFD_LP8788
@@ -492,7 +562,7 @@ config LP8788_ADC
 config LPC18XX_ADC
 	tristate "NXP LPC18xx ADC driver"
 	depends on ARCH_LPC18XX || COMPILE_TEST
-	depends on OF && HAS_IOMEM
+	depends on HAS_IOMEM
 	help
 	  Say yes here to build support for NXP LPC18XX ADC.
 
@@ -583,6 +653,30 @@ config MAX1118
 	  To compile this driver as a module, choose M here: the module will be
 	  called max1118.
 
+config MAX11205
+	tristate "Maxim max11205 ADC driver"
+	depends on SPI
+	select AD_SIGMA_DELTA
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+
+	help
+	  Say yes here to build support for Maxim max11205 16-bit, single-channel
+	  ultra-low power delta-sigma ADC.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called max11205.
+
+config MAX1241
+	tristate "Maxim max1241 ADC driver"
+	depends on SPI_MASTER
+	help
+	  Say yes here to build support for Maxim max1241 12-bit, single-channel
+	  ADC.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called max1241.
+
 config MAX1363
 	tristate "Maxim max1363 ADC driver"
 	depends on I2C
@@ -638,6 +732,8 @@ config MCP3422
 config MCP3911
 	tristate "Microchip Technology MCP3911 driver"
 	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Microchip Technology's MCP3911
 	  analog to digital converter.
@@ -645,6 +741,17 @@ config MCP3911
 	  This driver can also be built as a module. If so, the module will be
 	  called mcp3911.
 
+config MEDIATEK_MT6360_ADC
+	tristate "Mediatek MT6360 ADC driver"
+	depends on MFD_MT6360
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here to enable MT6360 ADC support.
+	  Integrated for System Monitoring includes
+	  is used in smartphones and tablets and supports a 11 channel
+	  general purpose ADC.
+
 config MEDIATEK_MT6577_AUXADC
 	tristate "MediaTek AUXADC driver"
 	depends on ARCH_MEDIATEK || COMPILE_TEST
@@ -680,6 +787,16 @@ config MESON_SARADC
 	  To compile this driver as a module, choose M here: the
 	  module will be called meson_saradc.
 
+config MP2629_ADC
+	tristate "Monolithic MP2629 ADC driver"
+	depends on MFD_MP2629
+	help
+	  Say yes to have support for battery charger IC MP2629 ADC device
+	  accessed over I2C.
+
+	  This driver provides ADC conversion of system, input power supply
+	  and battery voltage & current information.
+
 config NAU7802
 	tristate "Nuvoton NAU7802 ADC driver"
 	depends on I2C
@@ -721,6 +838,18 @@ config QCOM_PM8XXX_XOADC
 	  To compile this driver as a module, choose M here: the module
 	  will be called qcom-pm8xxx-xoadc.
 
+config QCOM_SPMI_RRADC
+	tristate "Qualcomm SPMI RRADC"
+	depends on MFD_SPMI_PMIC
+	help
+	  This is for the PMIC Round Robin ADC driver.
+
+	  This driver exposes the battery ID resistor, battery thermal, PMIC die
+	  temperature, charger USB in and DC in voltage and current.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called qcom-qpmi-rradc.
+
 config QCOM_SPMI_IADC
 	tristate "Qualcomm SPMI PMIC current ADC"
 	depends on SPMI
@@ -783,10 +912,22 @@ config RCAR_GYRO_ADC
 	  To compile this driver as a module, choose M here: the
 	  module will be called rcar-gyroadc.
 
+config RN5T618_ADC
+	tristate "ADC for the RN5T618/RC5T619 family of chips"
+	depends on MFD_RN5T618
+	help
+	  Say yes here to build support for the integrated ADC inside the
+	  RN5T618/619 series PMICs:
+
+	  This driver can also be built as a module. If so, the module
+	  will be called rn5t618-adc.
+
 config ROCKCHIP_SARADC
 	tristate "Rockchip SARADC driver"
-	depends on ARCH_ROCKCHIP || (ARM && COMPILE_TEST)
+	depends on ARCH_ROCKCHIP || COMPILE_TEST
 	depends on RESET_CONTROLLER
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for the SARADC found in SoCs from
 	  Rockchip.
@@ -794,6 +935,31 @@ config ROCKCHIP_SARADC
 	  To compile this driver as a module, choose M here: the
 	  module will be called rockchip_saradc.
 
+config RICHTEK_RTQ6056
+	tristate "Richtek RTQ6056 Current and Power Monitor ADC"
+	depends on I2C
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to enable RQT6056 ADC support.
+	  RTQ6056 is a high accuracy current-sense monitor with I2C and SMBus
+	  compatible interface, and the device provides full information for
+	  system by reading out the load current and power.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called rtq6056.
+
+config RZG2L_ADC
+	tristate "Renesas RZ/G2L ADC driver"
+	depends on ARCH_RZG2L || COMPILE_TEST
+	help
+	  Say yes here to build support for the ADC found in Renesas
+	  RZ/G2L family.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called rzg2l_adc.
+
 config SC27XX_ADC
 	tristate "Spreadtrum SC27xx series PMICs ADC"
 	depends on MFD_SC27XX_PMIC || COMPILE_TEST
@@ -817,7 +983,6 @@ config SPEAR_ADC
 
 config SD_ADC_MODULATOR
 	tristate "Generic sigma delta modulator"
-	depends on OF
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
@@ -832,6 +997,7 @@ config STM32_ADC_CORE
 	depends on ARCH_STM32 || COMPILE_TEST
 	depends on OF
 	depends on REGULATOR
+	depends on HAS_IOMEM
 	select IIO_BUFFER
 	select MFD_STM32_TIMERS
 	select IIO_STM32_TIMER_TRIGGER
@@ -887,22 +1053,6 @@ config STMPE_ADC
 	  Say yes here to build support for ST Microelectronics STMPE
 	  built-in ADC block (stmpe811).
 
-config STX104
-	tristate "Apex Embedded Systems STX104 driver"
-	depends on PC104 && X86
-	select ISA_BUS_API
-	select GPIOLIB
-	help
-	  Say yes here to build support for the Apex Embedded Systems STX104
-	  integrated analog PC/104 card.
-
-	  This driver supports the 16 channels of single-ended (8 channels of
-	  differential) analog inputs, 2 channels of analog output, 4 digital
-	  inputs, and 4 digital outputs provided by the STX104.
-
-	  The base port addresses for the devices may be configured via the base
-	  array module parameter.
-
 config SUN4I_GPADC
 	tristate "Support for the Allwinner SoCs GPADC"
 	depends on IIO
@@ -1032,7 +1182,7 @@ config TI_ADS7950
 
 config TI_ADS8344
 	tristate "Texas Instruments ADS8344"
-	depends on SPI && OF
+	depends on SPI
 	help
 	  If you say yes here you get support for Texas Instruments ADS8344
 	  ADC chips
@@ -1042,7 +1192,7 @@ config TI_ADS8344
 
 config TI_ADS8688
 	tristate "Texas Instruments ADS8688"
-	depends on SPI && OF
+	depends on SPI
 	help
 	  If you say yes here you get support for Texas Instruments ADS8684 and
 	  and ADS8688 ADC chips
@@ -1052,7 +1202,7 @@ config TI_ADS8688
 
 config TI_ADS124S08
 	tristate "Texas Instruments ADS124S08"
-	depends on SPI && OF
+	depends on SPI
 	help
 	  If you say yes here you get support for Texas Instruments ADS124S08
 	  and ADS124S06 ADC chips
@@ -1060,6 +1210,18 @@ config TI_ADS124S08
 	  This driver can also be built as a module. If so, the module will be
 	  called ti-ads124s08.
 
+config TI_ADS131E08
+	tristate "Texas Instruments ADS131E08"
+	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to get support for Texas Instruments ADS131E04, ADS131E06
+	  and ADS131E08 chips.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called ti-ads131e08.
+
 config TI_AM335X_ADC
 	tristate "TI's AM335X ADC driver"
 	depends on MFD_TI_AM335X_TSCADC && HAS_DMA
@@ -1084,6 +1246,18 @@ config TI_TLC4541
 	  This driver can also be built as a module. If so, the module will be
 	  called ti-tlc4541.
 
+config TI_TSC2046
+	tristate "Texas Instruments TSC2046 ADC driver"
+	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to build support for ADC functionality of Texas
+	  Instruments TSC2046 touch screen controller.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called ti-tsc2046.
+
 config TWL4030_MADC
 	tristate "TWL4030 MADC (Monitoring A/D Converter)"
 	depends on TWL4030_CORE
@@ -1110,7 +1284,6 @@ config TWL6030_GPADC
 
 config VF610_ADC
 	tristate "Freescale vf610 ADC driver"
-	depends on OF
 	depends on HAS_IOMEM
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
@@ -1137,10 +1310,32 @@ config XILINX_XADC
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	help
-	  Say yes here to have support for the Xilinx XADC. The driver does support
-	  both the ZYNQ interface to the XADC as well as the AXI-XADC interface.
+	  Say yes here to have support for the Xilinx 7 Series XADC or
+	  UltraScale/UltraScale+ System Management Wizard.
+
+	  For the 7 Series the driver does support both the ZYNQ interface
+	  to the XADC as well as the AXI-XADC interface.
+
+	  The driver also support the Xilinx System Management Wizard IP core
+	  that can be used to access the System Monitor ADC on the Xilinx
+	  UltraScale and UltraScale+ FPGAs.
 
 	  The driver can also be build as a module. If so, the module will be called
 	  xilinx-xadc.
 
+config XILINX_AMS
+	tristate "Xilinx AMS driver"
+	depends on ARCH_ZYNQMP || COMPILE_TEST
+	depends on HAS_IOMEM
+	help
+	  Say yes here to have support for the Xilinx AMS for Ultrascale/Ultrascale+
+	  System Monitor. With this you can measure and monitor the Voltages and
+	  Temperature values on the SOC.
+
+	  The driver supports Voltage and Temperature monitoring on Xilinx Ultrascale
+	  devices.
+
+	  The driver can also be built as a module. If so, the module will be called
+	  xilinx-ams.
+
 endmenu
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index 919228900df9..46caba7a010c 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -8,7 +8,9 @@ obj-$(CONFIG_AB8500_GPADC) += ab8500-gpadc.o
 obj-$(CONFIG_AD_SIGMA_DELTA) += ad_sigma_delta.o
 obj-$(CONFIG_AD7091R5) += ad7091r5.o ad7091r-base.o
 obj-$(CONFIG_AD7124) += ad7124.o
+obj-$(CONFIG_AD7192) += ad7192.o
 obj-$(CONFIG_AD7266) += ad7266.o
+obj-$(CONFIG_AD7280) += ad7280a.o
 obj-$(CONFIG_AD7291) += ad7291.o
 obj-$(CONFIG_AD7292) += ad7292.o
 obj-$(CONFIG_AD7298) += ad7298.o
@@ -25,6 +27,8 @@ obj-$(CONFIG_AD7793) += ad7793.o
 obj-$(CONFIG_AD7887) += ad7887.o
 obj-$(CONFIG_AD7949) += ad7949.o
 obj-$(CONFIG_AD799X) += ad799x.o
+obj-$(CONFIG_AD9467) += ad9467.o
+obj-$(CONFIG_ADI_AXI_ADC) += adi-axi-adc.o
 obj-$(CONFIG_ASPEED_ADC) += aspeed_adc.o
 obj-$(CONFIG_AT91_ADC) += at91_adc.o
 obj-$(CONFIG_AT91_SAMA5D2_ADC) += at91-sama5d2_adc.o
@@ -43,6 +47,7 @@ obj-$(CONFIG_FSL_MX25_ADC) += fsl-imx25-gcq.o
 obj-$(CONFIG_HI8435) += hi8435.o
 obj-$(CONFIG_HX711) += hx711.o
 obj-$(CONFIG_IMX7D_ADC) += imx7d_adc.o
+obj-$(CONFIG_IMX8QXP_ADC) += imx8qxp-adc.o
 obj-$(CONFIG_INA2XX_ADC) += ina2xx-adc.o
 obj-$(CONFIG_INGENIC_ADC) += ingenic-adc.o
 obj-$(CONFIG_INTEL_MRFLD_ADC) += intel_mrfld_adc.o
@@ -56,28 +61,35 @@ obj-$(CONFIG_LTC2497) += ltc2497.o ltc2497-core.o
 obj-$(CONFIG_MAX1027) += max1027.o
 obj-$(CONFIG_MAX11100) += max11100.o
 obj-$(CONFIG_MAX1118) += max1118.o
+obj-$(CONFIG_MAX11205) += max11205.o
+obj-$(CONFIG_MAX1241) += max1241.o
 obj-$(CONFIG_MAX1363) += max1363.o
 obj-$(CONFIG_MAX9611) += max9611.o
 obj-$(CONFIG_MCP320X) += mcp320x.o
 obj-$(CONFIG_MCP3422) += mcp3422.o
 obj-$(CONFIG_MCP3911) += mcp3911.o
+obj-$(CONFIG_MEDIATEK_MT6360_ADC) += mt6360-adc.o
 obj-$(CONFIG_MEDIATEK_MT6577_AUXADC) += mt6577_auxadc.o
 obj-$(CONFIG_MEN_Z188_ADC) += men_z188_adc.o
 obj-$(CONFIG_MESON_SARADC) += meson_saradc.o
+obj-$(CONFIG_MP2629_ADC) += mp2629_adc.o
 obj-$(CONFIG_MXS_LRADC_ADC) += mxs-lradc-adc.o
 obj-$(CONFIG_NAU7802) += nau7802.o
 obj-$(CONFIG_NPCM_ADC) += npcm_adc.o
 obj-$(CONFIG_PALMAS_GPADC) += palmas_gpadc.o
 obj-$(CONFIG_QCOM_SPMI_ADC5) += qcom-spmi-adc5.o
 obj-$(CONFIG_QCOM_SPMI_IADC) += qcom-spmi-iadc.o
+obj-$(CONFIG_QCOM_SPMI_RRADC) += qcom-spmi-rradc.o
 obj-$(CONFIG_QCOM_VADC_COMMON) += qcom-vadc-common.o
 obj-$(CONFIG_QCOM_SPMI_VADC) += qcom-spmi-vadc.o
 obj-$(CONFIG_QCOM_PM8XXX_XOADC) += qcom-pm8xxx-xoadc.o
 obj-$(CONFIG_RCAR_GYRO_ADC) += rcar-gyroadc.o
+obj-$(CONFIG_RN5T618_ADC) += rn5t618-adc.o
 obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o
+obj-$(CONFIG_RICHTEK_RTQ6056) += rtq6056.o
+obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o
 obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o
 obj-$(CONFIG_SPEAR_ADC) += spear_adc.o
-obj-$(CONFIG_STX104) += stx104.o
 obj-$(CONFIG_SUN4I_GPADC) += sun4i-gpadc-iio.o
 obj-$(CONFIG_STM32_ADC_CORE) += stm32-adc-core.o
 obj-$(CONFIG_STM32_ADC) += stm32-adc.o
@@ -96,12 +108,15 @@ obj-$(CONFIG_TI_ADS7950) += ti-ads7950.o
 obj-$(CONFIG_TI_ADS8344) += ti-ads8344.o
 obj-$(CONFIG_TI_ADS8688) += ti-ads8688.o
 obj-$(CONFIG_TI_ADS124S08) += ti-ads124s08.o
+obj-$(CONFIG_TI_ADS131E08) += ti-ads131e08.o
 obj-$(CONFIG_TI_AM335X_ADC) += ti_am335x_adc.o
 obj-$(CONFIG_TI_TLC4541) += ti-tlc4541.o
+obj-$(CONFIG_TI_TSC2046) += ti-tsc2046.o
 obj-$(CONFIG_TWL4030_MADC) += twl4030-madc.o
 obj-$(CONFIG_TWL6030_GPADC) += twl6030-gpadc.o
 obj-$(CONFIG_VF610_ADC) += vf610_adc.o
 obj-$(CONFIG_VIPERBOARD_ADC) += viperboard_adc.o
 xilinx-xadc-y := xilinx-xadc-core.o xilinx-xadc-events.o
 obj-$(CONFIG_XILINX_XADC) += xilinx-xadc.o
+obj-$(CONFIG_XILINX_AMS) += xilinx-ams.o
 obj-$(CONFIG_SD_ADC_MODULATOR) += sd_adc_modulator.o
diff --git a/drivers/iio/adc/ab8500-gpadc.c b/drivers/iio/adc/ab8500-gpadc.c
index fd5b18d7f0c2..4fa2126a354b 100644
--- a/drivers/iio/adc/ab8500-gpadc.c
+++ b/drivers/iio/adc/ab8500-gpadc.c
@@ -484,7 +484,7 @@ static int ab8500_gpadc_read(struct ab8500_gpadc *gpadc,
 			delay_max = 10000; /* large range optimises sleepmode */
 			break;
 		}
-		/* Fall through */
+		fallthrough;
 	default:
 		ctrl1 |= AB8500_GPADC_CTRL1_BUF_ENA;
 		break;
@@ -918,15 +918,15 @@ static int ab8500_gpadc_read_raw(struct iio_dev *indio_dev,
 			return processed;
 
 		/* Return millivolt or milliamps or millicentigrades */
-		*val = processed * 1000;
+		*val = processed;
 		return IIO_VAL_INT;
 	}
 
 	return -EINVAL;
 }
 
-static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
-				 const struct of_phandle_args *iiospec)
+static int ab8500_gpadc_fwnode_xlate(struct iio_dev *indio_dev,
+				     const struct fwnode_reference_args *iiospec)
 {
 	int i;
 
@@ -938,11 +938,10 @@ static int ab8500_gpadc_of_xlate(struct iio_dev *indio_dev,
 }
 
 static const struct iio_info ab8500_gpadc_info = {
-	.of_xlate = ab8500_gpadc_of_xlate,
+	.fwnode_xlate = ab8500_gpadc_fwnode_xlate,
 	.read_raw = ab8500_gpadc_read_raw,
 };
 
-#ifdef CONFIG_PM
 static int ab8500_gpadc_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -965,12 +964,11 @@ static int ab8500_gpadc_runtime_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
 /**
  * ab8500_gpadc_parse_channel() - process devicetree channel configuration
  * @dev: pointer to containing device
- * @np: device tree node for the channel to configure
+ * @fwnode: fw node for the channel to configure
  * @ch: channel info to fill in
  * @iio_chan: IIO channel specification to fill in
  *
@@ -978,15 +976,15 @@ static int ab8500_gpadc_runtime_resume(struct device *dev)
  * and define usage for things like AUX GPADC inputs more precisely.
  */
 static int ab8500_gpadc_parse_channel(struct device *dev,
-				      struct device_node *np,
+				      struct fwnode_handle *fwnode,
 				      struct ab8500_gpadc_chan_info *ch,
 				      struct iio_chan_spec *iio_chan)
 {
-	const char *name = np->name;
+	const char *name = fwnode_get_name(fwnode);
 	u32 chan;
 	int ret;
 
-	ret = of_property_read_u32(np, "reg", &chan);
+	ret = fwnode_property_read_u32(fwnode, "reg", &chan);
 	if (ret) {
 		dev_err(dev, "invalid channel number %s\n", name);
 		return ret;
@@ -1023,22 +1021,20 @@ static int ab8500_gpadc_parse_channel(struct device *dev,
 /**
  * ab8500_gpadc_parse_channels() - Parse the GPADC channels from DT
  * @gpadc: the GPADC to configure the channels for
- * @np: device tree node containing the channel configurations
  * @chans: the IIO channels we parsed
  * @nchans: the number of IIO channels we parsed
  */
 static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
-				       struct device_node *np,
 				       struct iio_chan_spec **chans_parsed,
 				       unsigned int *nchans_parsed)
 {
-	struct device_node *child;
+	struct fwnode_handle *child;
 	struct ab8500_gpadc_chan_info *ch;
 	struct iio_chan_spec *iio_chans;
 	unsigned int nchans;
 	int i;
 
-	nchans = of_get_available_child_count(np);
+	nchans = device_get_child_node_count(gpadc->dev);
 	if (!nchans) {
 		dev_err(gpadc->dev, "no channel children\n");
 		return -ENODEV;
@@ -1056,7 +1052,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
 		return -ENOMEM;
 
 	i = 0;
-	for_each_available_child_of_node(np, child) {
+	device_for_each_child_node(gpadc->dev, child) {
 		struct iio_chan_spec *iio_chan;
 		int ret;
 
@@ -1066,7 +1062,7 @@ static int ab8500_gpadc_parse_channels(struct ab8500_gpadc *gpadc,
 		ret = ab8500_gpadc_parse_channel(gpadc->dev, child, ch,
 						 iio_chan);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 		i++;
@@ -1083,7 +1079,6 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 	struct ab8500_gpadc *gpadc;
 	struct iio_dev *indio_dev;
 	struct device *dev = &pdev->dev;
-	struct device_node *np = pdev->dev.of_node;
 	struct iio_chan_spec *iio_chans;
 	unsigned int n_iio_chans;
 	int ret;
@@ -1098,20 +1093,22 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 	gpadc->dev = dev;
 	gpadc->ab8500 = dev_get_drvdata(dev->parent);
 
-	ret = ab8500_gpadc_parse_channels(gpadc, np, &iio_chans, &n_iio_chans);
+	ret = ab8500_gpadc_parse_channels(gpadc, &iio_chans, &n_iio_chans);
 	if (ret)
 		return ret;
 
 	gpadc->irq_sw = platform_get_irq_byname(pdev, "SW_CONV_END");
-	if (gpadc->irq_sw < 0) {
-		dev_err(dev, "failed to get platform sw_conv_end irq\n");
-		return gpadc->irq_sw;
-	}
-
-	gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
-	if (gpadc->irq_hw < 0) {
-		dev_err(dev, "failed to get platform hw_conv_end irq\n");
-		return gpadc->irq_hw;
+	if (gpadc->irq_sw < 0)
+		return dev_err_probe(dev, gpadc->irq_sw,
+				     "failed to get platform sw_conv_end irq\n");
+
+	if (is_ab8500(gpadc->ab8500)) {
+		gpadc->irq_hw = platform_get_irq_byname(pdev, "HW_CONV_END");
+		if (gpadc->irq_hw < 0)
+			return dev_err_probe(dev, gpadc->irq_hw,
+					     "failed to get platform hw_conv_end irq\n");
+	} else {
+		gpadc->irq_hw = 0;
 	}
 
 	/* Initialize completion used to notify completion of conversion */
@@ -1128,23 +1125,23 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = devm_request_threaded_irq(dev, gpadc->irq_hw, NULL,
-		ab8500_bm_gpadcconvend_handler,	IRQF_NO_SUSPEND | IRQF_ONESHOT,
-		"ab8500-gpadc-hw", gpadc);
-	if (ret < 0) {
-		dev_err(dev,
-			"Failed to request hw conversion irq: %d\n",
-			gpadc->irq_hw);
-		return ret;
+	if (gpadc->irq_hw) {
+		ret = devm_request_threaded_irq(dev, gpadc->irq_hw, NULL,
+			ab8500_bm_gpadcconvend_handler,	IRQF_NO_SUSPEND | IRQF_ONESHOT,
+			"ab8500-gpadc-hw", gpadc);
+		if (ret < 0) {
+			dev_err(dev,
+				"Failed to request hw conversion irq: %d\n",
+				gpadc->irq_hw);
+			return ret;
+		}
 	}
 
 	/* The VTVout LDO used to power the AB8500 GPADC */
 	gpadc->vddadc = devm_regulator_get(dev, "vddadc");
-	if (IS_ERR(gpadc->vddadc)) {
-		ret = PTR_ERR(gpadc->vddadc);
-		dev_err(dev, "failed to get vddadc\n");
-		return ret;
-	}
+	if (IS_ERR(gpadc->vddadc))
+		return dev_err_probe(dev, PTR_ERR(gpadc->vddadc),
+				     "failed to get vddadc\n");
 
 	ret = regulator_enable(gpadc->vddadc);
 	if (ret) {
@@ -1163,8 +1160,6 @@ static int ab8500_gpadc_probe(struct platform_device *pdev)
 
 	pm_runtime_put(dev);
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = np;
 	indio_dev->name = "ab8500-gpadc";
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ab8500_gpadc_info;
@@ -1199,20 +1194,16 @@ static int ab8500_gpadc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static const struct dev_pm_ops ab8500_gpadc_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(ab8500_gpadc_runtime_suspend,
-			   ab8500_gpadc_runtime_resume,
-			   NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(ab8500_gpadc_pm_ops,
+				 ab8500_gpadc_runtime_suspend,
+				 ab8500_gpadc_runtime_resume, NULL);
 
 static struct platform_driver ab8500_gpadc_driver = {
 	.probe = ab8500_gpadc_probe,
 	.remove = ab8500_gpadc_remove,
 	.driver = {
 		.name = "ab8500-gpadc",
-		.pm = &ab8500_gpadc_pm_ops,
+		.pm = pm_ptr(&ab8500_gpadc_pm_ops),
 	},
 };
 builtin_platform_driver(ab8500_gpadc_driver);
diff --git a/drivers/iio/adc/ad7091r-base.c b/drivers/iio/adc/ad7091r-base.c
index 33c40357bd5e..8e252cde735b 100644
--- a/drivers/iio/adc/ad7091r-base.c
+++ b/drivers/iio/adc/ad7091r-base.c
@@ -224,7 +224,6 @@ int ad7091r_probe(struct device *dev, const char *name,
 	st->chip_info = chip_info;
 	st->map = map;
 
-	iio_dev->dev.parent = dev;
 	iio_dev->name = name;
 	iio_dev->info = &ad7091r_info;
 	iio_dev->modes = INDIO_DIRECT_MODE;
@@ -261,7 +260,7 @@ int ad7091r_probe(struct device *dev, const char *name,
 
 	return devm_iio_device_register(dev, iio_dev);
 }
-EXPORT_SYMBOL_GPL(ad7091r_probe);
+EXPORT_SYMBOL_NS_GPL(ad7091r_probe, IIO_AD7091R);
 
 static bool ad7091r_writeable_reg(struct device *dev, unsigned int reg)
 {
@@ -291,7 +290,7 @@ const struct regmap_config ad7091r_regmap_config = {
 	.writeable_reg = ad7091r_writeable_reg,
 	.volatile_reg = ad7091r_volatile_reg,
 };
-EXPORT_SYMBOL_GPL(ad7091r_regmap_config);
+EXPORT_SYMBOL_NS_GPL(ad7091r_regmap_config, IIO_AD7091R);
 
 MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7091Rx multi-channel converters");
diff --git a/drivers/iio/adc/ad7091r5.c b/drivers/iio/adc/ad7091r5.c
index 9665679c3ea6..47f5763023a4 100644
--- a/drivers/iio/adc/ad7091r5.c
+++ b/drivers/iio/adc/ad7091r5.c
@@ -111,3 +111,4 @@ module_i2c_driver(ad7091r5_driver);
 MODULE_AUTHOR("Beniamin Bia <beniamin.bia@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7091R5 multi-channel ADC driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD7091R);
diff --git a/drivers/iio/adc/ad7124.c b/drivers/iio/adc/ad7124.c
index d9915dc71d1e..4088786e1026 100644
--- a/drivers/iio/adc/ad7124.c
+++ b/drivers/iio/adc/ad7124.c
@@ -5,13 +5,16 @@
  * Copyright 2018 Analog Devices Inc.
  */
 #include <linux/bitfield.h>
+#include <linux/bitops.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/device.h>
 #include <linux/err.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
+#include <linux/kfifo.h>
 #include <linux/module.h>
+#include <linux/of_device.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
@@ -40,6 +43,8 @@
 #define AD7124_STATUS_POR_FLAG_MSK	BIT(4)
 
 /* AD7124_ADC_CONTROL */
+#define AD7124_ADC_STATUS_EN_MSK	BIT(10)
+#define AD7124_ADC_STATUS_EN(x)		FIELD_PREP(AD7124_ADC_STATUS_EN_MSK, x)
 #define AD7124_ADC_CTRL_REF_EN_MSK	BIT(8)
 #define AD7124_ADC_CTRL_REF_EN(x)	FIELD_PREP(AD7124_ADC_CTRL_REF_EN_MSK, x)
 #define AD7124_ADC_CTRL_PWR_MSK	GENMASK(7, 6)
@@ -47,6 +52,15 @@
 #define AD7124_ADC_CTRL_MODE_MSK	GENMASK(5, 2)
 #define AD7124_ADC_CTRL_MODE(x)	FIELD_PREP(AD7124_ADC_CTRL_MODE_MSK, x)
 
+/* AD7124 ID */
+#define AD7124_DEVICE_ID_MSK		GENMASK(7, 4)
+#define AD7124_DEVICE_ID_GET(x)		FIELD_GET(AD7124_DEVICE_ID_MSK, x)
+#define AD7124_SILICON_REV_MSK		GENMASK(3, 0)
+#define AD7124_SILICON_REV_GET(x)	FIELD_GET(AD7124_SILICON_REV_MSK, x)
+
+#define CHIPID_AD7124_4			0x0
+#define CHIPID_AD7124_8			0x1
+
 /* AD7124_CHANNEL_X */
 #define AD7124_CHANNEL_EN_MSK		BIT(15)
 #define AD7124_CHANNEL_EN(x)		FIELD_PREP(AD7124_CHANNEL_EN_MSK, x)
@@ -64,12 +78,21 @@
 #define AD7124_CONFIG_REF_SEL(x)	FIELD_PREP(AD7124_CONFIG_REF_SEL_MSK, x)
 #define AD7124_CONFIG_PGA_MSK		GENMASK(2, 0)
 #define AD7124_CONFIG_PGA(x)		FIELD_PREP(AD7124_CONFIG_PGA_MSK, x)
-#define AD7124_CONFIG_IN_BUFF_MSK	GENMASK(7, 6)
+#define AD7124_CONFIG_IN_BUFF_MSK	GENMASK(6, 5)
 #define AD7124_CONFIG_IN_BUFF(x)	FIELD_PREP(AD7124_CONFIG_IN_BUFF_MSK, x)
 
 /* AD7124_FILTER_X */
 #define AD7124_FILTER_FS_MSK		GENMASK(10, 0)
 #define AD7124_FILTER_FS(x)		FIELD_PREP(AD7124_FILTER_FS_MSK, x)
+#define AD7124_FILTER_TYPE_MSK		GENMASK(23, 21)
+#define AD7124_FILTER_TYPE_SEL(x)	FIELD_PREP(AD7124_FILTER_TYPE_MSK, x)
+
+#define AD7124_SINC3_FILTER 2
+#define AD7124_SINC4_FILTER 0
+
+#define AD7124_CONF_ADDR_OFFSET	20
+#define AD7124_MAX_CONFIGS	8
+#define AD7124_MAX_CHANNELS	16
 
 enum ad7124_ids {
 	ID_AD7124_4,
@@ -93,6 +116,14 @@ static const unsigned int ad7124_gain[8] = {
 	1, 2, 4, 8, 16, 32, 64, 128
 };
 
+static const unsigned int ad7124_reg_size[] = {
+	1, 2, 3, 3, 2, 1, 3, 3, 1, 2, 2, 2, 2,
+	2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
+	2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
+	3, 3, 3, 3, 3
+};
+
 static const int ad7124_master_clk_freq_hz[3] = {
 	[AD7124_LOW_POWER] = 76800,
 	[AD7124_MID_POWER] = 153600,
@@ -107,28 +138,43 @@ static const char * const ad7124_ref_names[] = {
 };
 
 struct ad7124_chip_info {
+	const char *name;
+	unsigned int chip_id;
 	unsigned int num_inputs;
 };
 
 struct ad7124_channel_config {
+	bool live;
+	unsigned int cfg_slot;
 	enum ad7124_ref_sel refsel;
 	bool bipolar;
 	bool buf_positive;
 	bool buf_negative;
-	unsigned int ain;
 	unsigned int vref_mv;
 	unsigned int pga_bits;
 	unsigned int odr;
+	unsigned int odr_sel_bits;
+	unsigned int filter_type;
+};
+
+struct ad7124_channel {
+	unsigned int nr;
+	struct ad7124_channel_config cfg;
+	unsigned int ain;
+	unsigned int slot;
 };
 
 struct ad7124_state {
 	const struct ad7124_chip_info *chip_info;
 	struct ad_sigma_delta sd;
-	struct ad7124_channel_config *channel_config;
+	struct ad7124_channel *channels;
 	struct regulator *vref[4];
 	struct clk *mclk;
 	unsigned int adc_control;
 	unsigned int num_channels;
+	struct mutex cfgs_lock; /* lock for configs access */
+	unsigned long cfg_slots_status; /* bitmap with slot status (1 means it is used) */
+	DECLARE_KFIFO(live_cfgs_fifo, struct ad7124_channel_config *, AD7124_MAX_CONFIGS);
 };
 
 static const struct iio_chan_spec ad7124_channel_template = {
@@ -138,21 +184,25 @@ static const struct iio_chan_spec ad7124_channel_template = {
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 		BIT(IIO_CHAN_INFO_SCALE) |
 		BIT(IIO_CHAN_INFO_OFFSET) |
-		BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+		BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
 	.scan_type = {
 		.sign = 'u',
 		.realbits = 24,
 		.storagebits = 32,
-		.shift = 8,
 		.endianness = IIO_BE,
 	},
 };
 
 static struct ad7124_chip_info ad7124_chip_info_tbl[] = {
 	[ID_AD7124_4] = {
+		.name = "ad7124-4",
+		.chip_id = CHIPID_AD7124_4,
 		.num_inputs = 8,
 	},
 	[ID_AD7124_8] = {
+		.name = "ad7124-8",
+		.chip_id = CHIPID_AD7124_8,
 		.num_inputs = 16,
 	},
 };
@@ -207,33 +257,9 @@ static int ad7124_set_mode(struct ad_sigma_delta *sd,
 	return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, st->adc_control);
 }
 
-static int ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
-{
-	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
-	unsigned int val;
-
-	val = st->channel_config[channel].ain | AD7124_CHANNEL_EN(1) |
-	      AD7124_CHANNEL_SETUP(channel);
-
-	return ad_sd_write_reg(&st->sd, AD7124_CHANNEL(channel), 2, val);
-}
-
-static const struct ad_sigma_delta_info ad7124_sigma_delta_info = {
-	.set_channel = ad7124_set_channel,
-	.set_mode = ad7124_set_mode,
-	.has_registers = true,
-	.addr_shift = 0,
-	.read_mask = BIT(6),
-	.data_reg = AD7124_DATA,
-	.irq_flags = IRQF_TRIGGER_FALLING,
-};
-
-static int ad7124_set_channel_odr(struct ad7124_state *st,
-				  unsigned int channel,
-				  unsigned int odr)
+static void ad7124_set_channel_odr(struct ad7124_state *st, unsigned int channel, unsigned int odr)
 {
 	unsigned int fclk, odr_sel_bits;
-	int ret;
 
 	fclk = clk_get_rate(st->mclk);
 	/*
@@ -249,38 +275,299 @@ static int ad7124_set_channel_odr(struct ad7124_state *st,
 	else if (odr_sel_bits > 2047)
 		odr_sel_bits = 2047;
 
-	ret = ad7124_spi_write_mask(st, AD7124_FILTER(channel),
-				    AD7124_FILTER_FS_MSK,
-				    AD7124_FILTER_FS(odr_sel_bits), 3);
+	if (odr_sel_bits != st->channels[channel].cfg.odr_sel_bits)
+		st->channels[channel].cfg.live = false;
+
+	/* fADC = fCLK / (FS[10:0] x 32) */
+	st->channels[channel].cfg.odr = DIV_ROUND_CLOSEST(fclk, odr_sel_bits * 32);
+	st->channels[channel].cfg.odr_sel_bits = odr_sel_bits;
+}
+
+static int ad7124_get_3db_filter_freq(struct ad7124_state *st,
+				      unsigned int channel)
+{
+	unsigned int fadc;
+
+	fadc = st->channels[channel].cfg.odr;
+
+	switch (st->channels[channel].cfg.filter_type) {
+	case AD7124_SINC3_FILTER:
+		return DIV_ROUND_CLOSEST(fadc * 230, 1000);
+	case AD7124_SINC4_FILTER:
+		return DIV_ROUND_CLOSEST(fadc * 262, 1000);
+	default:
+		return -EINVAL;
+	}
+}
+
+static void ad7124_set_3db_filter_freq(struct ad7124_state *st, unsigned int channel,
+				       unsigned int freq)
+{
+	unsigned int sinc4_3db_odr;
+	unsigned int sinc3_3db_odr;
+	unsigned int new_filter;
+	unsigned int new_odr;
+
+	sinc4_3db_odr = DIV_ROUND_CLOSEST(freq * 1000, 230);
+	sinc3_3db_odr = DIV_ROUND_CLOSEST(freq * 1000, 262);
+
+	if (sinc4_3db_odr > sinc3_3db_odr) {
+		new_filter = AD7124_SINC3_FILTER;
+		new_odr = sinc4_3db_odr;
+	} else {
+		new_filter = AD7124_SINC4_FILTER;
+		new_odr = sinc3_3db_odr;
+	}
+
+	if (new_odr != st->channels[channel].cfg.odr)
+		st->channels[channel].cfg.live = false;
+
+	st->channels[channel].cfg.filter_type = new_filter;
+	st->channels[channel].cfg.odr = new_odr;
+}
+
+static struct ad7124_channel_config *ad7124_find_similar_live_cfg(struct ad7124_state *st,
+								  struct ad7124_channel_config *cfg)
+{
+	struct ad7124_channel_config *cfg_aux;
+	ptrdiff_t cmp_size;
+	int i;
+
+	cmp_size = (u8 *)&cfg->live - (u8 *)cfg;
+	for (i = 0; i < st->num_channels; i++) {
+		cfg_aux = &st->channels[i].cfg;
+
+		if (cfg_aux->live && !memcmp(cfg, cfg_aux, cmp_size))
+			return cfg_aux;
+	}
+
+	return NULL;
+}
+
+static int ad7124_find_free_config_slot(struct ad7124_state *st)
+{
+	unsigned int free_cfg_slot;
+
+	free_cfg_slot = find_first_zero_bit(&st->cfg_slots_status, AD7124_MAX_CONFIGS);
+	if (free_cfg_slot == AD7124_MAX_CONFIGS)
+		return -1;
+
+	return free_cfg_slot;
+}
+
+static int ad7124_init_config_vref(struct ad7124_state *st, struct ad7124_channel_config *cfg)
+{
+	unsigned int refsel = cfg->refsel;
+
+	switch (refsel) {
+	case AD7124_REFIN1:
+	case AD7124_REFIN2:
+	case AD7124_AVDD_REF:
+		if (IS_ERR(st->vref[refsel])) {
+			dev_err(&st->sd.spi->dev,
+				"Error, trying to use external voltage reference without a %s regulator.\n",
+				ad7124_ref_names[refsel]);
+			return PTR_ERR(st->vref[refsel]);
+		}
+		cfg->vref_mv = regulator_get_voltage(st->vref[refsel]);
+		/* Conversion from uV to mV */
+		cfg->vref_mv /= 1000;
+		return 0;
+	case AD7124_INT_REF:
+		cfg->vref_mv = 2500;
+		st->adc_control &= ~AD7124_ADC_CTRL_REF_EN_MSK;
+		st->adc_control |= AD7124_ADC_CTRL_REF_EN(1);
+		return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL,
+				      2, st->adc_control);
+	default:
+		dev_err(&st->sd.spi->dev, "Invalid reference %d\n", refsel);
+		return -EINVAL;
+	}
+}
+
+static int ad7124_write_config(struct ad7124_state *st, struct ad7124_channel_config *cfg,
+			       unsigned int cfg_slot)
+{
+	unsigned int tmp;
+	unsigned int val;
+	int ret;
+
+	cfg->cfg_slot = cfg_slot;
+
+	tmp = (cfg->buf_positive << 1) + cfg->buf_negative;
+	val = AD7124_CONFIG_BIPOLAR(cfg->bipolar) | AD7124_CONFIG_REF_SEL(cfg->refsel) |
+	      AD7124_CONFIG_IN_BUFF(tmp);
+	ret = ad_sd_write_reg(&st->sd, AD7124_CONFIG(cfg->cfg_slot), 2, val);
 	if (ret < 0)
 		return ret;
-	/* fADC = fCLK / (FS[10:0] x 32) */
-	st->channel_config[channel].odr =
-		DIV_ROUND_CLOSEST(fclk, odr_sel_bits * 32);
 
-	return 0;
+	tmp = AD7124_FILTER_TYPE_SEL(cfg->filter_type);
+	ret = ad7124_spi_write_mask(st, AD7124_FILTER(cfg->cfg_slot), AD7124_FILTER_TYPE_MSK,
+				    tmp, 3);
+	if (ret < 0)
+		return ret;
+
+	ret = ad7124_spi_write_mask(st, AD7124_FILTER(cfg->cfg_slot), AD7124_FILTER_FS_MSK,
+				    AD7124_FILTER_FS(cfg->odr_sel_bits), 3);
+	if (ret < 0)
+		return ret;
+
+	return ad7124_spi_write_mask(st, AD7124_CONFIG(cfg->cfg_slot), AD7124_CONFIG_PGA_MSK,
+				     AD7124_CONFIG_PGA(cfg->pga_bits), 2);
+}
+
+static struct ad7124_channel_config *ad7124_pop_config(struct ad7124_state *st)
+{
+	struct ad7124_channel_config *lru_cfg;
+	struct ad7124_channel_config *cfg;
+	int ret;
+	int i;
+
+	/*
+	 * Pop least recently used config from the fifo
+	 * in order to make room for the new one
+	 */
+	ret = kfifo_get(&st->live_cfgs_fifo, &lru_cfg);
+	if (ret <= 0)
+		return NULL;
+
+	lru_cfg->live = false;
+
+	/* mark slot as free */
+	assign_bit(lru_cfg->cfg_slot, &st->cfg_slots_status, 0);
+
+	/* invalidate all other configs that pointed to this one */
+	for (i = 0; i < st->num_channels; i++) {
+		cfg = &st->channels[i].cfg;
+
+		if (cfg->cfg_slot == lru_cfg->cfg_slot)
+			cfg->live = false;
+	}
+
+	return lru_cfg;
+}
+
+static int ad7124_push_config(struct ad7124_state *st, struct ad7124_channel_config *cfg)
+{
+	struct ad7124_channel_config *lru_cfg;
+	int free_cfg_slot;
+
+	free_cfg_slot = ad7124_find_free_config_slot(st);
+	if (free_cfg_slot >= 0) {
+		/* push the new config in configs queue */
+		kfifo_put(&st->live_cfgs_fifo, cfg);
+	} else {
+		/* pop one config to make room for the new one */
+		lru_cfg = ad7124_pop_config(st);
+		if (!lru_cfg)
+			return -EINVAL;
+
+		/* push the new config in configs queue */
+		free_cfg_slot = lru_cfg->cfg_slot;
+		kfifo_put(&st->live_cfgs_fifo, cfg);
+	}
+
+	/* mark slot as used */
+	assign_bit(free_cfg_slot, &st->cfg_slots_status, 1);
+
+	return ad7124_write_config(st, cfg, free_cfg_slot);
+}
+
+static int ad7124_enable_channel(struct ad7124_state *st, struct ad7124_channel *ch)
+{
+	ch->cfg.live = true;
+	return ad_sd_write_reg(&st->sd, AD7124_CHANNEL(ch->nr), 2, ch->ain |
+			      AD7124_CHANNEL_SETUP(ch->cfg.cfg_slot) | AD7124_CHANNEL_EN(1));
+}
+
+static int ad7124_prepare_read(struct ad7124_state *st, int address)
+{
+	struct ad7124_channel_config *cfg = &st->channels[address].cfg;
+	struct ad7124_channel_config *live_cfg;
+
+	/*
+	 * Before doing any reads assign the channel a configuration.
+	 * Check if channel's config is on the device
+	 */
+	if (!cfg->live) {
+		/* check if config matches another one */
+		live_cfg = ad7124_find_similar_live_cfg(st, cfg);
+		if (!live_cfg)
+			ad7124_push_config(st, cfg);
+		else
+			cfg->cfg_slot = live_cfg->cfg_slot;
+	}
+
+	/* point channel to the config slot and enable */
+	return ad7124_enable_channel(st, &st->channels[address]);
+}
+
+static int __ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
+{
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+
+	return ad7124_prepare_read(st, channel);
+}
+
+static int ad7124_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
+{
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+	int ret;
+
+	mutex_lock(&st->cfgs_lock);
+	ret = __ad7124_set_channel(sd, channel);
+	mutex_unlock(&st->cfgs_lock);
+
+	return ret;
 }
 
-static int ad7124_set_channel_gain(struct ad7124_state *st,
-				   unsigned int channel,
-				   unsigned int gain)
+static int ad7124_append_status(struct ad_sigma_delta *sd, bool append)
 {
-	unsigned int res;
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+	unsigned int adc_control = st->adc_control;
 	int ret;
 
-	res = ad7124_find_closest_match(ad7124_gain,
-					ARRAY_SIZE(ad7124_gain), gain);
-	ret = ad7124_spi_write_mask(st, AD7124_CONFIG(channel),
-				    AD7124_CONFIG_PGA_MSK,
-				    AD7124_CONFIG_PGA(res), 2);
+	adc_control &= ~AD7124_ADC_STATUS_EN_MSK;
+	adc_control |= AD7124_ADC_STATUS_EN(append);
+
+	ret = ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL, 2, adc_control);
 	if (ret < 0)
 		return ret;
 
-	st->channel_config[channel].pga_bits = res;
+	st->adc_control = adc_control;
 
 	return 0;
 }
 
+static int ad7124_disable_all(struct ad_sigma_delta *sd)
+{
+	struct ad7124_state *st = container_of(sd, struct ad7124_state, sd);
+	int ret;
+	int i;
+
+	for (i = 0; i < st->num_channels; i++) {
+		ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), AD7124_CHANNEL_EN_MSK, 0, 2);
+		if (ret < 0)
+			return ret;
+	}
+
+	return 0;
+}
+
+static const struct ad_sigma_delta_info ad7124_sigma_delta_info = {
+	.set_channel = ad7124_set_channel,
+	.append_status = ad7124_append_status,
+	.disable_all = ad7124_disable_all,
+	.set_mode = ad7124_set_mode,
+	.has_registers = true,
+	.addr_shift = 0,
+	.read_mask = BIT(6),
+	.status_ch_mask = GENMASK(3, 0),
+	.data_reg = AD7124_DATA,
+	.num_slots = 8,
+	.irq_flags = IRQF_TRIGGER_FALLING,
+};
+
 static int ad7124_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2, long info)
@@ -295,32 +582,43 @@ static int ad7124_read_raw(struct iio_dev *indio_dev,
 			return ret;
 
 		/* After the conversion is performed, disable the channel */
-		ret = ad_sd_write_reg(&st->sd,
-				      AD7124_CHANNEL(chan->address), 2,
-				      st->channel_config[chan->address].ain |
-				      AD7124_CHANNEL_EN(0));
+		ret = ad_sd_write_reg(&st->sd, AD7124_CHANNEL(chan->address), 2,
+				      st->channels[chan->address].ain | AD7124_CHANNEL_EN(0));
 		if (ret < 0)
 			return ret;
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		idx = st->channel_config[chan->address].pga_bits;
-		*val = st->channel_config[chan->address].vref_mv;
-		if (st->channel_config[chan->address].bipolar)
+		mutex_lock(&st->cfgs_lock);
+
+		idx = st->channels[chan->address].cfg.pga_bits;
+		*val = st->channels[chan->address].cfg.vref_mv;
+		if (st->channels[chan->address].cfg.bipolar)
 			*val2 = chan->scan_type.realbits - 1 + idx;
 		else
 			*val2 = chan->scan_type.realbits + idx;
 
+		mutex_unlock(&st->cfgs_lock);
 		return IIO_VAL_FRACTIONAL_LOG2;
 	case IIO_CHAN_INFO_OFFSET:
-		if (st->channel_config[chan->address].bipolar)
+		mutex_lock(&st->cfgs_lock);
+		if (st->channels[chan->address].cfg.bipolar)
 			*val = -(1 << (chan->scan_type.realbits - 1));
 		else
 			*val = 0;
 
+		mutex_unlock(&st->cfgs_lock);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		*val = st->channel_config[chan->address].odr;
+		mutex_lock(&st->cfgs_lock);
+		*val = st->channels[chan->address].cfg.odr;
+		mutex_unlock(&st->cfgs_lock);
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		mutex_lock(&st->cfgs_lock);
+		*val = ad7124_get_3db_filter_freq(st, chan->scan_index);
+		mutex_unlock(&st->cfgs_lock);
 
 		return IIO_VAL_INT;
 	default:
@@ -334,30 +632,75 @@ static int ad7124_write_raw(struct iio_dev *indio_dev,
 {
 	struct ad7124_state *st = iio_priv(indio_dev);
 	unsigned int res, gain, full_scale, vref;
+	int ret = 0;
+
+	mutex_lock(&st->cfgs_lock);
 
 	switch (info) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (val2 != 0)
-			return -EINVAL;
+		if (val2 != 0) {
+			ret = -EINVAL;
+			break;
+		}
 
-		return ad7124_set_channel_odr(st, chan->address, val);
+		ad7124_set_channel_odr(st, chan->address, val);
+		break;
 	case IIO_CHAN_INFO_SCALE:
-		if (val != 0)
-			return -EINVAL;
+		if (val != 0) {
+			ret = -EINVAL;
+			break;
+		}
 
-		if (st->channel_config[chan->address].bipolar)
+		if (st->channels[chan->address].cfg.bipolar)
 			full_scale = 1 << (chan->scan_type.realbits - 1);
 		else
 			full_scale = 1 << chan->scan_type.realbits;
 
-		vref = st->channel_config[chan->address].vref_mv * 1000000LL;
+		vref = st->channels[chan->address].cfg.vref_mv * 1000000LL;
 		res = DIV_ROUND_CLOSEST(vref, full_scale);
 		gain = DIV_ROUND_CLOSEST(res, val2);
+		res = ad7124_find_closest_match(ad7124_gain, ARRAY_SIZE(ad7124_gain), gain);
 
-		return ad7124_set_channel_gain(st, chan->address, gain);
+		if (st->channels[chan->address].cfg.pga_bits != res)
+			st->channels[chan->address].cfg.live = false;
+
+		st->channels[chan->address].cfg.pga_bits = res;
+		break;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		if (val2 != 0) {
+			ret = -EINVAL;
+			break;
+		}
+
+		ad7124_set_3db_filter_freq(st, chan->address, val);
+		break;
 	default:
-		return -EINVAL;
+		ret =  -EINVAL;
 	}
+
+	mutex_unlock(&st->cfgs_lock);
+	return ret;
+}
+
+static int ad7124_reg_access(struct iio_dev *indio_dev,
+			     unsigned int reg,
+			     unsigned int writeval,
+			     unsigned int *readval)
+{
+	struct ad7124_state *st = iio_priv(indio_dev);
+	int ret;
+
+	if (reg >= ARRAY_SIZE(ad7124_reg_size))
+		return -EINVAL;
+
+	if (readval)
+		ret = ad_sd_read_reg(&st->sd, reg, ad7124_reg_size[reg],
+				     readval);
+	else
+		ret = ad_sd_write_reg(&st->sd, reg, ad7124_reg_size[reg],
+				      writeval);
+
+	return ret;
 }
 
 static IIO_CONST_ATTR(in_voltage_scale_available,
@@ -372,10 +715,40 @@ static const struct attribute_group ad7124_attrs_group = {
 	.attrs = ad7124_attributes,
 };
 
+static int ad7124_update_scan_mode(struct iio_dev *indio_dev,
+				   const unsigned long *scan_mask)
+{
+	struct ad7124_state *st = iio_priv(indio_dev);
+	bool bit_set;
+	int ret;
+	int i;
+
+	mutex_lock(&st->cfgs_lock);
+	for (i = 0; i < st->num_channels; i++) {
+		bit_set = test_bit(i, scan_mask);
+		if (bit_set)
+			ret = __ad7124_set_channel(&st->sd, i);
+		else
+			ret = ad7124_spi_write_mask(st, AD7124_CHANNEL(i), AD7124_CHANNEL_EN_MSK,
+						    0, 2);
+		if (ret < 0) {
+			mutex_unlock(&st->cfgs_lock);
+
+			return ret;
+		}
+	}
+
+	mutex_unlock(&st->cfgs_lock);
+
+	return 0;
+}
+
 static const struct iio_info ad7124_info = {
 	.read_raw = ad7124_read_raw,
 	.write_raw = ad7124_write_raw,
+	.debugfs_reg_access = &ad7124_reg_access,
 	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7124_update_scan_mode,
 	.attrs = &ad7124_attrs_group,
 };
 
@@ -406,35 +779,29 @@ static int ad7124_soft_reset(struct ad7124_state *st)
 	return -EIO;
 }
 
-static int ad7124_init_channel_vref(struct ad7124_state *st,
-				    unsigned int channel_number)
+static int ad7124_check_chip_id(struct ad7124_state *st)
 {
-	unsigned int refsel = st->channel_config[channel_number].refsel;
+	unsigned int readval, chip_id, silicon_rev;
+	int ret;
 
-	switch (refsel) {
-	case AD7124_REFIN1:
-	case AD7124_REFIN2:
-	case AD7124_AVDD_REF:
-		if (IS_ERR(st->vref[refsel])) {
-			dev_err(&st->sd.spi->dev,
-				"Error, trying to use external voltage reference without a %s regulator.\n",
-				ad7124_ref_names[refsel]);
-			return PTR_ERR(st->vref[refsel]);
-		}
-		st->channel_config[channel_number].vref_mv =
-			regulator_get_voltage(st->vref[refsel]);
-		/* Conversion from uV to mV */
-		st->channel_config[channel_number].vref_mv /= 1000;
-		break;
-	case AD7124_INT_REF:
-		st->channel_config[channel_number].vref_mv = 2500;
-		st->adc_control &= ~AD7124_ADC_CTRL_REF_EN_MSK;
-		st->adc_control |= AD7124_ADC_CTRL_REF_EN(1);
-		return ad_sd_write_reg(&st->sd, AD7124_ADC_CONTROL,
-				      2, st->adc_control);
-	default:
-		dev_err(&st->sd.spi->dev, "Invalid reference %d\n", refsel);
-		return -EINVAL;
+	ret = ad_sd_read_reg(&st->sd, AD7124_ID, 1, &readval);
+	if (ret < 0)
+		return ret;
+
+	chip_id = AD7124_DEVICE_ID_GET(readval);
+	silicon_rev = AD7124_SILICON_REV_GET(readval);
+
+	if (chip_id != st->chip_info->chip_id) {
+		dev_err(&st->sd.spi->dev,
+			"Chip ID mismatch: expected %u, got %u\n",
+			st->chip_info->chip_id, chip_id);
+		return -ENODEV;
+	}
+
+	if (silicon_rev == 0) {
+		dev_err(&st->sd.spi->dev,
+			"Silicon revision empty. Chip may not be present\n");
+		return -ENODEV;
 	}
 
 	return 0;
@@ -444,9 +811,10 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 					  struct device_node *np)
 {
 	struct ad7124_state *st = iio_priv(indio_dev);
+	struct ad7124_channel_config *cfg;
+	struct ad7124_channel *channels;
 	struct device_node *child;
 	struct iio_chan_spec *chan;
-	struct ad7124_channel_config *chan_config;
 	unsigned int ain[2], channel = 0, tmp;
 	int ret;
 
@@ -461,40 +829,48 @@ static int ad7124_of_parse_channel_config(struct iio_dev *indio_dev,
 	if (!chan)
 		return -ENOMEM;
 
-	chan_config = devm_kcalloc(indio_dev->dev.parent, st->num_channels,
-				   sizeof(*chan_config), GFP_KERNEL);
-	if (!chan_config)
+	channels = devm_kcalloc(indio_dev->dev.parent, st->num_channels, sizeof(*channels),
+				GFP_KERNEL);
+	if (!channels)
 		return -ENOMEM;
 
 	indio_dev->channels = chan;
 	indio_dev->num_channels = st->num_channels;
-	st->channel_config = chan_config;
+	st->channels = channels;
 
 	for_each_available_child_of_node(np, child) {
+		cfg = &st->channels[channel].cfg;
+
 		ret = of_property_read_u32(child, "reg", &channel);
 		if (ret)
 			goto err;
 
+		if (channel >= indio_dev->num_channels) {
+			dev_err(indio_dev->dev.parent,
+				"Channel index >= number of channels\n");
+			ret = -EINVAL;
+			goto err;
+		}
+
 		ret = of_property_read_u32_array(child, "diff-channels",
 						 ain, 2);
 		if (ret)
 			goto err;
 
-		st->channel_config[channel].ain = AD7124_CHANNEL_AINP(ain[0]) |
+		st->channels[channel].nr = channel;
+		st->channels[channel].ain = AD7124_CHANNEL_AINP(ain[0]) |
 						  AD7124_CHANNEL_AINM(ain[1]);
-		st->channel_config[channel].bipolar =
-			of_property_read_bool(child, "bipolar");
+
+		cfg->bipolar = of_property_read_bool(child, "bipolar");
 
 		ret = of_property_read_u32(child, "adi,reference-select", &tmp);
 		if (ret)
-			st->channel_config[channel].refsel = AD7124_INT_REF;
+			cfg->refsel = AD7124_INT_REF;
 		else
-			st->channel_config[channel].refsel = tmp;
+			cfg->refsel = tmp;
 
-		st->channel_config[channel].buf_positive =
-			of_property_read_bool(child, "adi,buffered-positive");
-		st->channel_config[channel].buf_negative =
-			of_property_read_bool(child, "adi,buffered-negative");
+		cfg->buf_positive = of_property_read_bool(child, "adi,buffered-positive");
+		cfg->buf_negative = of_property_read_bool(child, "adi,buffered-negative");
 
 		chan[channel] = ad7124_channel_template;
 		chan[channel].address = channel;
@@ -512,8 +888,8 @@ err:
 
 static int ad7124_setup(struct ad7124_state *st)
 {
-	unsigned int val, fclk, power_mode;
-	int i, ret, tmp;
+	unsigned int fclk, power_mode;
+	int i, ret;
 
 	fclk = clk_get_rate(st->mclk);
 	if (!fclk)
@@ -536,61 +912,57 @@ static int ad7124_setup(struct ad7124_state *st)
 	if (ret < 0)
 		return ret;
 
+	mutex_init(&st->cfgs_lock);
+	INIT_KFIFO(st->live_cfgs_fifo);
 	for (i = 0; i < st->num_channels; i++) {
-		val = st->channel_config[i].ain | AD7124_CHANNEL_SETUP(i);
-		ret = ad_sd_write_reg(&st->sd, AD7124_CHANNEL(i), 2, val);
-		if (ret < 0)
-			return ret;
 
-		ret = ad7124_init_channel_vref(st, i);
+		ret = ad7124_init_config_vref(st, &st->channels[i].cfg);
 		if (ret < 0)
 			return ret;
 
-		tmp = (st->channel_config[i].buf_positive << 1)  +
-			st->channel_config[i].buf_negative;
-
-		val = AD7124_CONFIG_BIPOLAR(st->channel_config[i].bipolar) |
-		      AD7124_CONFIG_REF_SEL(st->channel_config[i].refsel) |
-		      AD7124_CONFIG_IN_BUFF(tmp);
-		ret = ad_sd_write_reg(&st->sd, AD7124_CONFIG(i), 2, val);
-		if (ret < 0)
-			return ret;
 		/*
 		 * 9.38 SPS is the minimum output data rate supported
 		 * regardless of the selected power mode. Round it up to 10 and
-		 * set all the enabled channels to this default value.
+		 * set all channels to this default value.
 		 */
-		ret = ad7124_set_channel_odr(st, i, 10);
+		ad7124_set_channel_odr(st, i, 10);
 	}
 
 	return ret;
 }
 
+static void ad7124_reg_disable(void *r)
+{
+	regulator_disable(r);
+}
+
 static int ad7124_probe(struct spi_device *spi)
 {
-	const struct spi_device_id *id;
+	const struct ad7124_chip_info *info;
 	struct ad7124_state *st;
 	struct iio_dev *indio_dev;
 	int i, ret;
 
+	info = of_device_get_match_data(&spi->dev);
+	if (!info)
+		return -ENODEV;
+
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);
 
-	id = spi_get_device_id(spi);
-	st->chip_info = &ad7124_chip_info_tbl[id->driver_data];
-
-	ad_sd_init(&st->sd, indio_dev, spi, &ad7124_sigma_delta_info);
+	st->chip_info = info;
 
-	spi_set_drvdata(spi, indio_dev);
-
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->name = st->chip_info->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ad7124_info;
 
+	ret = ad_sd_init(&st->sd, indio_dev, spi, &ad7124_sigma_delta_info);
+	if (ret < 0)
+		return ret;
+
 	ret = ad7124_of_parse_channel_config(indio_dev, spi->dev.of_node);
 	if (ret < 0)
 		return ret;
@@ -609,79 +981,42 @@ static int ad7124_probe(struct spi_device *spi)
 		ret = regulator_enable(st->vref[i]);
 		if (ret)
 			return ret;
-	}
 
-	st->mclk = devm_clk_get(&spi->dev, "mclk");
-	if (IS_ERR(st->mclk)) {
-		ret = PTR_ERR(st->mclk);
-		goto error_regulator_disable;
+		ret = devm_add_action_or_reset(&spi->dev, ad7124_reg_disable,
+					       st->vref[i]);
+		if (ret)
+			return ret;
 	}
 
-	ret = clk_prepare_enable(st->mclk);
-	if (ret < 0)
-		goto error_regulator_disable;
+	st->mclk = devm_clk_get_enabled(&spi->dev, "mclk");
+	if (IS_ERR(st->mclk))
+		return PTR_ERR(st->mclk);
 
 	ret = ad7124_soft_reset(st);
 	if (ret < 0)
-		goto error_clk_disable_unprepare;
+		return ret;
+
+	ret = ad7124_check_chip_id(st);
+	if (ret)
+		return ret;
 
 	ret = ad7124_setup(st);
 	if (ret < 0)
-		goto error_clk_disable_unprepare;
+		return ret;
 
-	ret = ad_sd_setup_buffer_and_trigger(indio_dev);
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
 	if (ret < 0)
-		goto error_clk_disable_unprepare;
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&spi->dev, "Failed to register iio device\n");
-		goto error_remove_trigger;
-	}
-
-	return 0;
-
-error_remove_trigger:
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-error_clk_disable_unprepare:
-	clk_disable_unprepare(st->mclk);
-error_regulator_disable:
-	for (i = ARRAY_SIZE(st->vref) - 1; i >= 0; i--) {
-		if (!IS_ERR_OR_NULL(st->vref[i]))
-			regulator_disable(st->vref[i]);
-	}
-
-	return ret;
-}
-
-static int ad7124_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7124_state *st = iio_priv(indio_dev);
-	int i;
+		return ret;
 
-	iio_device_unregister(indio_dev);
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-	clk_disable_unprepare(st->mclk);
+	return devm_iio_device_register(&spi->dev, indio_dev);
 
-	for (i = ARRAY_SIZE(st->vref) - 1; i >= 0; i--) {
-		if (!IS_ERR_OR_NULL(st->vref[i]))
-			regulator_disable(st->vref[i]);
-	}
-
-	return 0;
 }
 
-static const struct spi_device_id ad7124_id_table[] = {
-	{ "ad7124-4", ID_AD7124_4 },
-	{ "ad7124-8", ID_AD7124_8 },
-	{}
-};
-MODULE_DEVICE_TABLE(spi, ad7124_id_table);
-
 static const struct of_device_id ad7124_of_match[] = {
-	{ .compatible = "adi,ad7124-4" },
-	{ .compatible = "adi,ad7124-8" },
+	{ .compatible = "adi,ad7124-4",
+		.data = &ad7124_chip_info_tbl[ID_AD7124_4], },
+	{ .compatible = "adi,ad7124-8",
+		.data = &ad7124_chip_info_tbl[ID_AD7124_8], },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, ad7124_of_match);
@@ -692,11 +1027,10 @@ static struct spi_driver ad71124_driver = {
 		.of_match_table = ad7124_of_match,
 	},
 	.probe = ad7124_probe,
-	.remove	= ad7124_remove,
-	.id_table = ad7124_id_table,
 };
 module_spi_driver(ad71124_driver);
 
 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7124 SPI driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
diff --git a/drivers/iio/adc/ad7192.c b/drivers/iio/adc/ad7192.c
new file mode 100644
index 000000000000..d71977be7d22
--- /dev/null
+++ b/drivers/iio/adc/ad7192.c
@@ -0,0 +1,1113 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AD7190 AD7192 AD7193 AD7195 SPI ADC driver
+ *
+ * Copyright 2011-2015 Analog Devices Inc.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/spi/spi.h>
+#include <linux/regulator/consumer.h>
+#include <linux/err.h>
+#include <linux/sched.h>
+#include <linux/delay.h>
+#include <linux/of_device.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/adc/ad_sigma_delta.h>
+
+/* Registers */
+#define AD7192_REG_COMM		0 /* Communications Register (WO, 8-bit) */
+#define AD7192_REG_STAT		0 /* Status Register	     (RO, 8-bit) */
+#define AD7192_REG_MODE		1 /* Mode Register	     (RW, 24-bit */
+#define AD7192_REG_CONF		2 /* Configuration Register  (RW, 24-bit) */
+#define AD7192_REG_DATA		3 /* Data Register	     (RO, 24/32-bit) */
+#define AD7192_REG_ID		4 /* ID Register	     (RO, 8-bit) */
+#define AD7192_REG_GPOCON	5 /* GPOCON Register	     (RO, 8-bit) */
+#define AD7192_REG_OFFSET	6 /* Offset Register	     (RW, 16-bit */
+				  /* (AD7792)/24-bit (AD7192)) */
+#define AD7192_REG_FULLSALE	7 /* Full-Scale Register */
+				  /* (RW, 16-bit (AD7792)/24-bit (AD7192)) */
+
+/* Communications Register Bit Designations (AD7192_REG_COMM) */
+#define AD7192_COMM_WEN		BIT(7) /* Write Enable */
+#define AD7192_COMM_WRITE	0 /* Write Operation */
+#define AD7192_COMM_READ	BIT(6) /* Read Operation */
+#define AD7192_COMM_ADDR(x)	(((x) & 0x7) << 3) /* Register Address */
+#define AD7192_COMM_CREAD	BIT(2) /* Continuous Read of Data Register */
+
+/* Status Register Bit Designations (AD7192_REG_STAT) */
+#define AD7192_STAT_RDY		BIT(7) /* Ready */
+#define AD7192_STAT_ERR		BIT(6) /* Error (Overrange, Underrange) */
+#define AD7192_STAT_NOREF	BIT(5) /* Error no external reference */
+#define AD7192_STAT_PARITY	BIT(4) /* Parity */
+#define AD7192_STAT_CH3		BIT(2) /* Channel 3 */
+#define AD7192_STAT_CH2		BIT(1) /* Channel 2 */
+#define AD7192_STAT_CH1		BIT(0) /* Channel 1 */
+
+/* Mode Register Bit Designations (AD7192_REG_MODE) */
+#define AD7192_MODE_SEL(x)	(((x) & 0x7) << 21) /* Operation Mode Select */
+#define AD7192_MODE_SEL_MASK	(0x7 << 21) /* Operation Mode Select Mask */
+#define AD7192_MODE_STA(x)	(((x) & 0x1) << 20) /* Status Register transmission */
+#define AD7192_MODE_STA_MASK	BIT(20) /* Status Register transmission Mask */
+#define AD7192_MODE_CLKSRC(x)	(((x) & 0x3) << 18) /* Clock Source Select */
+#define AD7192_MODE_SINC3	BIT(15) /* SINC3 Filter Select */
+#define AD7192_MODE_ACX		BIT(14) /* AC excitation enable(AD7195 only)*/
+#define AD7192_MODE_ENPAR	BIT(13) /* Parity Enable */
+#define AD7192_MODE_CLKDIV	BIT(12) /* Clock divide by 2 (AD7190/2 only)*/
+#define AD7192_MODE_SCYCLE	BIT(11) /* Single cycle conversion */
+#define AD7192_MODE_REJ60	BIT(10) /* 50/60Hz notch filter */
+#define AD7192_MODE_RATE(x)	((x) & 0x3FF) /* Filter Update Rate Select */
+
+/* Mode Register: AD7192_MODE_SEL options */
+#define AD7192_MODE_CONT		0 /* Continuous Conversion Mode */
+#define AD7192_MODE_SINGLE		1 /* Single Conversion Mode */
+#define AD7192_MODE_IDLE		2 /* Idle Mode */
+#define AD7192_MODE_PWRDN		3 /* Power-Down Mode */
+#define AD7192_MODE_CAL_INT_ZERO	4 /* Internal Zero-Scale Calibration */
+#define AD7192_MODE_CAL_INT_FULL	5 /* Internal Full-Scale Calibration */
+#define AD7192_MODE_CAL_SYS_ZERO	6 /* System Zero-Scale Calibration */
+#define AD7192_MODE_CAL_SYS_FULL	7 /* System Full-Scale Calibration */
+
+/* Mode Register: AD7192_MODE_CLKSRC options */
+#define AD7192_CLK_EXT_MCLK1_2		0 /* External 4.92 MHz Clock connected*/
+					  /* from MCLK1 to MCLK2 */
+#define AD7192_CLK_EXT_MCLK2		1 /* External Clock applied to MCLK2 */
+#define AD7192_CLK_INT			2 /* Internal 4.92 MHz Clock not */
+					  /* available at the MCLK2 pin */
+#define AD7192_CLK_INT_CO		3 /* Internal 4.92 MHz Clock available*/
+					  /* at the MCLK2 pin */
+
+/* Configuration Register Bit Designations (AD7192_REG_CONF) */
+
+#define AD7192_CONF_CHOP	BIT(23) /* CHOP enable */
+#define AD7192_CONF_REFSEL	BIT(20) /* REFIN1/REFIN2 Reference Select */
+#define AD7192_CONF_CHAN(x)	((x) << 8) /* Channel select */
+#define AD7192_CONF_CHAN_MASK	(0x7FF << 8) /* Channel select mask */
+#define AD7192_CONF_BURN	BIT(7) /* Burnout current enable */
+#define AD7192_CONF_REFDET	BIT(6) /* Reference detect enable */
+#define AD7192_CONF_BUF		BIT(4) /* Buffered Mode Enable */
+#define AD7192_CONF_UNIPOLAR	BIT(3) /* Unipolar/Bipolar Enable */
+#define AD7192_CONF_GAIN(x)	((x) & 0x7) /* Gain Select */
+
+#define AD7192_CH_AIN1P_AIN2M	BIT(0) /* AIN1(+) - AIN2(-) */
+#define AD7192_CH_AIN3P_AIN4M	BIT(1) /* AIN3(+) - AIN4(-) */
+#define AD7192_CH_TEMP		BIT(2) /* Temp Sensor */
+#define AD7192_CH_AIN2P_AIN2M	BIT(3) /* AIN2(+) - AIN2(-) */
+#define AD7192_CH_AIN1		BIT(4) /* AIN1 - AINCOM */
+#define AD7192_CH_AIN2		BIT(5) /* AIN2 - AINCOM */
+#define AD7192_CH_AIN3		BIT(6) /* AIN3 - AINCOM */
+#define AD7192_CH_AIN4		BIT(7) /* AIN4 - AINCOM */
+
+#define AD7193_CH_AIN1P_AIN2M	0x001  /* AIN1(+) - AIN2(-) */
+#define AD7193_CH_AIN3P_AIN4M	0x002  /* AIN3(+) - AIN4(-) */
+#define AD7193_CH_AIN5P_AIN6M	0x004  /* AIN5(+) - AIN6(-) */
+#define AD7193_CH_AIN7P_AIN8M	0x008  /* AIN7(+) - AIN8(-) */
+#define AD7193_CH_TEMP		0x100 /* Temp senseor */
+#define AD7193_CH_AIN2P_AIN2M	0x200 /* AIN2(+) - AIN2(-) */
+#define AD7193_CH_AIN1		0x401 /* AIN1 - AINCOM */
+#define AD7193_CH_AIN2		0x402 /* AIN2 - AINCOM */
+#define AD7193_CH_AIN3		0x404 /* AIN3 - AINCOM */
+#define AD7193_CH_AIN4		0x408 /* AIN4 - AINCOM */
+#define AD7193_CH_AIN5		0x410 /* AIN5 - AINCOM */
+#define AD7193_CH_AIN6		0x420 /* AIN6 - AINCOM */
+#define AD7193_CH_AIN7		0x440 /* AIN7 - AINCOM */
+#define AD7193_CH_AIN8		0x480 /* AIN7 - AINCOM */
+#define AD7193_CH_AINCOM	0x600 /* AINCOM - AINCOM */
+
+/* ID Register Bit Designations (AD7192_REG_ID) */
+#define CHIPID_AD7190		0x4
+#define CHIPID_AD7192		0x0
+#define CHIPID_AD7193		0x2
+#define CHIPID_AD7195		0x6
+#define AD7192_ID_MASK		0x0F
+
+/* GPOCON Register Bit Designations (AD7192_REG_GPOCON) */
+#define AD7192_GPOCON_BPDSW	BIT(6) /* Bridge power-down switch enable */
+#define AD7192_GPOCON_GP32EN	BIT(5) /* Digital Output P3 and P2 enable */
+#define AD7192_GPOCON_GP10EN	BIT(4) /* Digital Output P1 and P0 enable */
+#define AD7192_GPOCON_P3DAT	BIT(3) /* P3 state */
+#define AD7192_GPOCON_P2DAT	BIT(2) /* P2 state */
+#define AD7192_GPOCON_P1DAT	BIT(1) /* P1 state */
+#define AD7192_GPOCON_P0DAT	BIT(0) /* P0 state */
+
+#define AD7192_EXT_FREQ_MHZ_MIN	2457600
+#define AD7192_EXT_FREQ_MHZ_MAX	5120000
+#define AD7192_INT_FREQ_MHZ	4915200
+
+#define AD7192_NO_SYNC_FILTER	1
+#define AD7192_SYNC3_FILTER	3
+#define AD7192_SYNC4_FILTER	4
+
+/* NOTE:
+ * The AD7190/2/5 features a dual use data out ready DOUT/RDY output.
+ * In order to avoid contentions on the SPI bus, it's therefore necessary
+ * to use spi bus locking.
+ *
+ * The DOUT/RDY output must also be wired to an interrupt capable GPIO.
+ */
+
+enum {
+	AD7192_SYSCALIB_ZERO_SCALE,
+	AD7192_SYSCALIB_FULL_SCALE,
+};
+
+enum {
+	ID_AD7190,
+	ID_AD7192,
+	ID_AD7193,
+	ID_AD7195,
+};
+
+struct ad7192_chip_info {
+	unsigned int			chip_id;
+	const char			*name;
+};
+
+struct ad7192_state {
+	const struct ad7192_chip_info	*chip_info;
+	struct regulator		*avdd;
+	struct regulator		*dvdd;
+	struct clk			*mclk;
+	u16				int_vref_mv;
+	u32				fclk;
+	u32				f_order;
+	u32				mode;
+	u32				conf;
+	u32				scale_avail[8][2];
+	u8				gpocon;
+	u8				clock_sel;
+	struct mutex			lock;	/* protect sensor state */
+	u8				syscalib_mode[8];
+
+	struct ad_sigma_delta		sd;
+};
+
+static const char * const ad7192_syscalib_modes[] = {
+	[AD7192_SYSCALIB_ZERO_SCALE] = "zero_scale",
+	[AD7192_SYSCALIB_FULL_SCALE] = "full_scale",
+};
+
+static int ad7192_set_syscalib_mode(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    unsigned int mode)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	st->syscalib_mode[chan->channel] = mode;
+
+	return 0;
+}
+
+static int ad7192_get_syscalib_mode(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	return st->syscalib_mode[chan->channel];
+}
+
+static ssize_t ad7192_write_syscalib(struct iio_dev *indio_dev,
+				     uintptr_t private,
+				     const struct iio_chan_spec *chan,
+				     const char *buf, size_t len)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	bool sys_calib;
+	int ret, temp;
+
+	ret = kstrtobool(buf, &sys_calib);
+	if (ret)
+		return ret;
+
+	temp = st->syscalib_mode[chan->channel];
+	if (sys_calib) {
+		if (temp == AD7192_SYSCALIB_ZERO_SCALE)
+			ret = ad_sd_calibrate(&st->sd, AD7192_MODE_CAL_SYS_ZERO,
+					      chan->address);
+		else
+			ret = ad_sd_calibrate(&st->sd, AD7192_MODE_CAL_SYS_FULL,
+					      chan->address);
+	}
+
+	return ret ? ret : len;
+}
+
+static const struct iio_enum ad7192_syscalib_mode_enum = {
+	.items = ad7192_syscalib_modes,
+	.num_items = ARRAY_SIZE(ad7192_syscalib_modes),
+	.set = ad7192_set_syscalib_mode,
+	.get = ad7192_get_syscalib_mode
+};
+
+static const struct iio_chan_spec_ext_info ad7192_calibsys_ext_info[] = {
+	{
+		.name = "sys_calibration",
+		.write = ad7192_write_syscalib,
+		.shared = IIO_SEPARATE,
+	},
+	IIO_ENUM("sys_calibration_mode", IIO_SEPARATE,
+		 &ad7192_syscalib_mode_enum),
+	IIO_ENUM_AVAILABLE("sys_calibration_mode", IIO_SHARED_BY_TYPE,
+			   &ad7192_syscalib_mode_enum),
+	{}
+};
+
+static struct ad7192_state *ad_sigma_delta_to_ad7192(struct ad_sigma_delta *sd)
+{
+	return container_of(sd, struct ad7192_state, sd);
+}
+
+static int ad7192_set_channel(struct ad_sigma_delta *sd, unsigned int channel)
+{
+	struct ad7192_state *st = ad_sigma_delta_to_ad7192(sd);
+
+	st->conf &= ~AD7192_CONF_CHAN_MASK;
+	st->conf |= AD7192_CONF_CHAN(channel);
+
+	return ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, st->conf);
+}
+
+static int ad7192_set_mode(struct ad_sigma_delta *sd,
+			   enum ad_sigma_delta_mode mode)
+{
+	struct ad7192_state *st = ad_sigma_delta_to_ad7192(sd);
+
+	st->mode &= ~AD7192_MODE_SEL_MASK;
+	st->mode |= AD7192_MODE_SEL(mode);
+
+	return ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
+}
+
+static int ad7192_append_status(struct ad_sigma_delta *sd, bool append)
+{
+	struct ad7192_state *st = ad_sigma_delta_to_ad7192(sd);
+	unsigned int mode = st->mode;
+	int ret;
+
+	mode &= ~AD7192_MODE_STA_MASK;
+	mode |= AD7192_MODE_STA(append);
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, mode);
+	if (ret < 0)
+		return ret;
+
+	st->mode = mode;
+
+	return 0;
+}
+
+static int ad7192_disable_all(struct ad_sigma_delta *sd)
+{
+	struct ad7192_state *st = ad_sigma_delta_to_ad7192(sd);
+	u32 conf = st->conf;
+	int ret;
+
+	conf &= ~AD7192_CONF_CHAN_MASK;
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, conf);
+	if (ret < 0)
+		return ret;
+
+	st->conf = conf;
+
+	return 0;
+}
+
+static const struct ad_sigma_delta_info ad7192_sigma_delta_info = {
+	.set_channel = ad7192_set_channel,
+	.append_status = ad7192_append_status,
+	.disable_all = ad7192_disable_all,
+	.set_mode = ad7192_set_mode,
+	.has_registers = true,
+	.addr_shift = 3,
+	.read_mask = BIT(6),
+	.status_ch_mask = GENMASK(3, 0),
+	.num_slots = 4,
+	.irq_flags = IRQF_TRIGGER_FALLING,
+};
+
+static const struct ad_sd_calib_data ad7192_calib_arr[8] = {
+	{AD7192_MODE_CAL_INT_ZERO, AD7192_CH_AIN1},
+	{AD7192_MODE_CAL_INT_FULL, AD7192_CH_AIN1},
+	{AD7192_MODE_CAL_INT_ZERO, AD7192_CH_AIN2},
+	{AD7192_MODE_CAL_INT_FULL, AD7192_CH_AIN2},
+	{AD7192_MODE_CAL_INT_ZERO, AD7192_CH_AIN3},
+	{AD7192_MODE_CAL_INT_FULL, AD7192_CH_AIN3},
+	{AD7192_MODE_CAL_INT_ZERO, AD7192_CH_AIN4},
+	{AD7192_MODE_CAL_INT_FULL, AD7192_CH_AIN4}
+};
+
+static int ad7192_calibrate_all(struct ad7192_state *st)
+{
+	return ad_sd_calibrate_all(&st->sd, ad7192_calib_arr,
+				   ARRAY_SIZE(ad7192_calib_arr));
+}
+
+static inline bool ad7192_valid_external_frequency(u32 freq)
+{
+	return (freq >= AD7192_EXT_FREQ_MHZ_MIN &&
+		freq <= AD7192_EXT_FREQ_MHZ_MAX);
+}
+
+static int ad7192_of_clock_select(struct ad7192_state *st)
+{
+	struct device_node *np = st->sd.spi->dev.of_node;
+	unsigned int clock_sel;
+
+	clock_sel = AD7192_CLK_INT;
+
+	/* use internal clock */
+	if (st->mclk) {
+		if (of_property_read_bool(np, "adi,int-clock-output-enable"))
+			clock_sel = AD7192_CLK_INT_CO;
+	} else {
+		if (of_property_read_bool(np, "adi,clock-xtal"))
+			clock_sel = AD7192_CLK_EXT_MCLK1_2;
+		else
+			clock_sel = AD7192_CLK_EXT_MCLK2;
+	}
+
+	return clock_sel;
+}
+
+static int ad7192_setup(struct ad7192_state *st, struct device_node *np)
+{
+	struct iio_dev *indio_dev = spi_get_drvdata(st->sd.spi);
+	bool rej60_en, refin2_en;
+	bool buf_en, bipolar, burnout_curr_en;
+	unsigned long long scale_uv;
+	int i, ret, id;
+
+	/* reset the serial interface */
+	ret = ad_sd_reset(&st->sd, 48);
+	if (ret < 0)
+		return ret;
+	usleep_range(500, 1000); /* Wait for at least 500us */
+
+	/* write/read test for device presence */
+	ret = ad_sd_read_reg(&st->sd, AD7192_REG_ID, 1, &id);
+	if (ret)
+		return ret;
+
+	id &= AD7192_ID_MASK;
+
+	if (id != st->chip_info->chip_id)
+		dev_warn(&st->sd.spi->dev, "device ID query failed (0x%X)\n",
+			 id);
+
+	st->mode = AD7192_MODE_SEL(AD7192_MODE_IDLE) |
+		AD7192_MODE_CLKSRC(st->clock_sel) |
+		AD7192_MODE_RATE(480);
+
+	st->conf = AD7192_CONF_GAIN(0);
+
+	rej60_en = of_property_read_bool(np, "adi,rejection-60-Hz-enable");
+	if (rej60_en)
+		st->mode |= AD7192_MODE_REJ60;
+
+	refin2_en = of_property_read_bool(np, "adi,refin2-pins-enable");
+	if (refin2_en && st->chip_info->chip_id != CHIPID_AD7195)
+		st->conf |= AD7192_CONF_REFSEL;
+
+	st->conf &= ~AD7192_CONF_CHOP;
+	st->f_order = AD7192_NO_SYNC_FILTER;
+
+	buf_en = of_property_read_bool(np, "adi,buffer-enable");
+	if (buf_en)
+		st->conf |= AD7192_CONF_BUF;
+
+	bipolar = of_property_read_bool(np, "bipolar");
+	if (!bipolar)
+		st->conf |= AD7192_CONF_UNIPOLAR;
+
+	burnout_curr_en = of_property_read_bool(np,
+						"adi,burnout-currents-enable");
+	if (burnout_curr_en && buf_en) {
+		st->conf |= AD7192_CONF_BURN;
+	} else if (burnout_curr_en) {
+		dev_warn(&st->sd.spi->dev,
+			 "Can't enable burnout currents: see CHOP or buffer\n");
+	}
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
+	if (ret)
+		return ret;
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, st->conf);
+	if (ret)
+		return ret;
+
+	ret = ad7192_calibrate_all(st);
+	if (ret)
+		return ret;
+
+	/* Populate available ADC input ranges */
+	for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++) {
+		scale_uv = ((u64)st->int_vref_mv * 100000000)
+			>> (indio_dev->channels[0].scan_type.realbits -
+			((st->conf & AD7192_CONF_UNIPOLAR) ? 0 : 1));
+		scale_uv >>= i;
+
+		st->scale_avail[i][1] = do_div(scale_uv, 100000000) * 10;
+		st->scale_avail[i][0] = scale_uv;
+	}
+
+	return 0;
+}
+
+static ssize_t ad7192_show_ac_excitation(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	return sysfs_emit(buf, "%d\n", !!(st->mode & AD7192_MODE_ACX));
+}
+
+static ssize_t ad7192_show_bridge_switch(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	return sysfs_emit(buf, "%d\n", !!(st->gpocon & AD7192_GPOCON_BPDSW));
+}
+
+static ssize_t ad7192_set(struct device *dev,
+			  struct device_attribute *attr,
+			  const char *buf,
+			  size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	int ret;
+	bool val;
+
+	ret = kstrtobool(buf, &val);
+	if (ret < 0)
+		return ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	switch ((u32)this_attr->address) {
+	case AD7192_REG_GPOCON:
+		if (val)
+			st->gpocon |= AD7192_GPOCON_BPDSW;
+		else
+			st->gpocon &= ~AD7192_GPOCON_BPDSW;
+
+		ad_sd_write_reg(&st->sd, AD7192_REG_GPOCON, 1, st->gpocon);
+		break;
+	case AD7192_REG_MODE:
+		if (val)
+			st->mode |= AD7192_MODE_ACX;
+		else
+			st->mode &= ~AD7192_MODE_ACX;
+
+		ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret ? ret : len;
+}
+
+static void ad7192_get_available_filter_freq(struct ad7192_state *st,
+						    int *freq)
+{
+	unsigned int fadc;
+
+	/* Formulas for filter at page 25 of the datasheet */
+	fadc = DIV_ROUND_CLOSEST(st->fclk,
+				 AD7192_SYNC4_FILTER * AD7192_MODE_RATE(st->mode));
+	freq[0] = DIV_ROUND_CLOSEST(fadc * 240, 1024);
+
+	fadc = DIV_ROUND_CLOSEST(st->fclk,
+				 AD7192_SYNC3_FILTER * AD7192_MODE_RATE(st->mode));
+	freq[1] = DIV_ROUND_CLOSEST(fadc * 240, 1024);
+
+	fadc = DIV_ROUND_CLOSEST(st->fclk, AD7192_MODE_RATE(st->mode));
+	freq[2] = DIV_ROUND_CLOSEST(fadc * 230, 1024);
+	freq[3] = DIV_ROUND_CLOSEST(fadc * 272, 1024);
+}
+
+static ssize_t ad7192_show_filter_avail(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+	unsigned int freq_avail[4], i;
+	size_t len = 0;
+
+	ad7192_get_available_filter_freq(st, freq_avail);
+
+	for (i = 0; i < ARRAY_SIZE(freq_avail); i++)
+		len += scnprintf(buf + len, PAGE_SIZE - len,
+				 "%d.%d ", freq_avail[i] / 1000,
+				 freq_avail[i] % 1000);
+
+	buf[len - 1] = '\n';
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR(filter_low_pass_3db_frequency_available,
+		       0444, ad7192_show_filter_avail, NULL, 0);
+
+static IIO_DEVICE_ATTR(bridge_switch_en, 0644,
+		       ad7192_show_bridge_switch, ad7192_set,
+		       AD7192_REG_GPOCON);
+
+static IIO_DEVICE_ATTR(ac_excitation_en, 0644,
+		       ad7192_show_ac_excitation, ad7192_set,
+		       AD7192_REG_MODE);
+
+static struct attribute *ad7192_attributes[] = {
+	&iio_dev_attr_filter_low_pass_3db_frequency_available.dev_attr.attr,
+	&iio_dev_attr_bridge_switch_en.dev_attr.attr,
+	&iio_dev_attr_ac_excitation_en.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group ad7192_attribute_group = {
+	.attrs = ad7192_attributes,
+};
+
+static struct attribute *ad7195_attributes[] = {
+	&iio_dev_attr_filter_low_pass_3db_frequency_available.dev_attr.attr,
+	&iio_dev_attr_bridge_switch_en.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group ad7195_attribute_group = {
+	.attrs = ad7195_attributes,
+};
+
+static unsigned int ad7192_get_temp_scale(bool unipolar)
+{
+	return unipolar ? 2815 * 2 : 2815;
+}
+
+static int ad7192_set_3db_filter_freq(struct ad7192_state *st,
+				      int val, int val2)
+{
+	int freq_avail[4], i, ret, freq;
+	unsigned int diff_new, diff_old;
+	int idx = 0;
+
+	diff_old = U32_MAX;
+	freq = val * 1000 + val2;
+
+	ad7192_get_available_filter_freq(st, freq_avail);
+
+	for (i = 0; i < ARRAY_SIZE(freq_avail); i++) {
+		diff_new = abs(freq - freq_avail[i]);
+		if (diff_new < diff_old) {
+			diff_old = diff_new;
+			idx = i;
+		}
+	}
+
+	switch (idx) {
+	case 0:
+		st->f_order = AD7192_SYNC4_FILTER;
+		st->mode &= ~AD7192_MODE_SINC3;
+
+		st->conf |= AD7192_CONF_CHOP;
+		break;
+	case 1:
+		st->f_order = AD7192_SYNC3_FILTER;
+		st->mode |= AD7192_MODE_SINC3;
+
+		st->conf |= AD7192_CONF_CHOP;
+		break;
+	case 2:
+		st->f_order = AD7192_NO_SYNC_FILTER;
+		st->mode &= ~AD7192_MODE_SINC3;
+
+		st->conf &= ~AD7192_CONF_CHOP;
+		break;
+	case 3:
+		st->f_order = AD7192_NO_SYNC_FILTER;
+		st->mode |= AD7192_MODE_SINC3;
+
+		st->conf &= ~AD7192_CONF_CHOP;
+		break;
+	}
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
+	if (ret < 0)
+		return ret;
+
+	return ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, st->conf);
+}
+
+static int ad7192_get_3db_filter_freq(struct ad7192_state *st)
+{
+	unsigned int fadc;
+
+	fadc = DIV_ROUND_CLOSEST(st->fclk,
+				 st->f_order * AD7192_MODE_RATE(st->mode));
+
+	if (st->conf & AD7192_CONF_CHOP)
+		return DIV_ROUND_CLOSEST(fadc * 240, 1024);
+	if (st->mode & AD7192_MODE_SINC3)
+		return DIV_ROUND_CLOSEST(fadc * 272, 1024);
+	else
+		return DIV_ROUND_CLOSEST(fadc * 230, 1024);
+}
+
+static int ad7192_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long m)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	bool unipolar = !!(st->conf & AD7192_CONF_UNIPOLAR);
+
+	switch (m) {
+	case IIO_CHAN_INFO_RAW:
+		return ad_sigma_delta_single_conversion(indio_dev, chan, val);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			mutex_lock(&st->lock);
+			*val = st->scale_avail[AD7192_CONF_GAIN(st->conf)][0];
+			*val2 = st->scale_avail[AD7192_CONF_GAIN(st->conf)][1];
+			mutex_unlock(&st->lock);
+			return IIO_VAL_INT_PLUS_NANO;
+		case IIO_TEMP:
+			*val = 0;
+			*val2 = 1000000000 / ad7192_get_temp_scale(unipolar);
+			return IIO_VAL_INT_PLUS_NANO;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		if (!unipolar)
+			*val = -(1 << (chan->scan_type.realbits - 1));
+		else
+			*val = 0;
+		/* Kelvin to Celsius */
+		if (chan->type == IIO_TEMP)
+			*val -= 273 * ad7192_get_temp_scale(unipolar);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = st->fclk /
+			(st->f_order * 1024 * AD7192_MODE_RATE(st->mode));
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		*val = ad7192_get_3db_filter_freq(st);
+		*val2 = 1000;
+		return IIO_VAL_FRACTIONAL;
+	}
+
+	return -EINVAL;
+}
+
+static int ad7192_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val,
+			    int val2,
+			    long mask)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	int ret, i, div;
+	unsigned int tmp;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		ret = -EINVAL;
+		mutex_lock(&st->lock);
+		for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
+			if (val2 == st->scale_avail[i][1]) {
+				ret = 0;
+				tmp = st->conf;
+				st->conf &= ~AD7192_CONF_GAIN(-1);
+				st->conf |= AD7192_CONF_GAIN(i);
+				if (tmp == st->conf)
+					break;
+				ad_sd_write_reg(&st->sd, AD7192_REG_CONF,
+						3, st->conf);
+				ad7192_calibrate_all(st);
+				break;
+			}
+		mutex_unlock(&st->lock);
+		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (!val) {
+			ret = -EINVAL;
+			break;
+		}
+
+		div = st->fclk / (val * st->f_order * 1024);
+		if (div < 1 || div > 1023) {
+			ret = -EINVAL;
+			break;
+		}
+
+		st->mode &= ~AD7192_MODE_RATE(-1);
+		st->mode |= AD7192_MODE_RATE(div);
+		ad_sd_write_reg(&st->sd, AD7192_REG_MODE, 3, st->mode);
+		break;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		ret = ad7192_set_3db_filter_freq(st, val, val2 / 1000);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static int ad7192_write_raw_get_fmt(struct iio_dev *indio_dev,
+				    struct iio_chan_spec const *chan,
+				    long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7192_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (int *)st->scale_avail;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		/* Values are stored in a 2D matrix  */
+		*length = ARRAY_SIZE(st->scale_avail) * 2;
+
+		return IIO_AVAIL_LIST;
+	}
+
+	return -EINVAL;
+}
+
+static int ad7192_update_scan_mode(struct iio_dev *indio_dev, const unsigned long *scan_mask)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	u32 conf = st->conf;
+	int ret;
+	int i;
+
+	conf &= ~AD7192_CONF_CHAN_MASK;
+	for_each_set_bit(i, scan_mask, 8)
+		conf |= AD7192_CONF_CHAN(i);
+
+	ret = ad_sd_write_reg(&st->sd, AD7192_REG_CONF, 3, conf);
+	if (ret < 0)
+		return ret;
+
+	st->conf = conf;
+
+	return 0;
+}
+
+static const struct iio_info ad7192_info = {
+	.read_raw = ad7192_read_raw,
+	.write_raw = ad7192_write_raw,
+	.write_raw_get_fmt = ad7192_write_raw_get_fmt,
+	.read_avail = ad7192_read_avail,
+	.attrs = &ad7192_attribute_group,
+	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7192_update_scan_mode,
+};
+
+static const struct iio_info ad7195_info = {
+	.read_raw = ad7192_read_raw,
+	.write_raw = ad7192_write_raw,
+	.write_raw_get_fmt = ad7192_write_raw_get_fmt,
+	.read_avail = ad7192_read_avail,
+	.attrs = &ad7195_attribute_group,
+	.validate_trigger = ad_sd_validate_trigger,
+	.update_scan_mode = ad7192_update_scan_mode,
+};
+
+#define __AD719x_CHANNEL(_si, _channel1, _channel2, _address, _extend_name, \
+	_type, _mask_type_av, _ext_info) \
+	{ \
+		.type = (_type), \
+		.differential = ((_channel2) == -1 ? 0 : 1), \
+		.indexed = 1, \
+		.channel = (_channel1), \
+		.channel2 = (_channel2), \
+		.address = (_address), \
+		.extend_name = (_extend_name), \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_OFFSET), \
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
+		.info_mask_shared_by_type_available = (_mask_type_av), \
+		.ext_info = (_ext_info), \
+		.scan_index = (_si), \
+		.scan_type = { \
+			.sign = 'u', \
+			.realbits = 24, \
+			.storagebits = 32, \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+#define AD719x_DIFF_CHANNEL(_si, _channel1, _channel2, _address) \
+	__AD719x_CHANNEL(_si, _channel1, _channel2, _address, NULL, \
+		IIO_VOLTAGE, BIT(IIO_CHAN_INFO_SCALE), \
+		ad7192_calibsys_ext_info)
+
+#define AD719x_CHANNEL(_si, _channel1, _address) \
+	__AD719x_CHANNEL(_si, _channel1, -1, _address, NULL, IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SCALE), ad7192_calibsys_ext_info)
+
+#define AD719x_SHORTED_CHANNEL(_si, _channel1, _address) \
+	__AD719x_CHANNEL(_si, _channel1, -1, _address, "shorted", IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SCALE), ad7192_calibsys_ext_info)
+
+#define AD719x_TEMP_CHANNEL(_si, _address) \
+	__AD719x_CHANNEL(_si, 0, -1, _address, NULL, IIO_TEMP, 0, NULL)
+
+static const struct iio_chan_spec ad7192_channels[] = {
+	AD719x_DIFF_CHANNEL(0, 1, 2, AD7192_CH_AIN1P_AIN2M),
+	AD719x_DIFF_CHANNEL(1, 3, 4, AD7192_CH_AIN3P_AIN4M),
+	AD719x_TEMP_CHANNEL(2, AD7192_CH_TEMP),
+	AD719x_SHORTED_CHANNEL(3, 2, AD7192_CH_AIN2P_AIN2M),
+	AD719x_CHANNEL(4, 1, AD7192_CH_AIN1),
+	AD719x_CHANNEL(5, 2, AD7192_CH_AIN2),
+	AD719x_CHANNEL(6, 3, AD7192_CH_AIN3),
+	AD719x_CHANNEL(7, 4, AD7192_CH_AIN4),
+	IIO_CHAN_SOFT_TIMESTAMP(8),
+};
+
+static const struct iio_chan_spec ad7193_channels[] = {
+	AD719x_DIFF_CHANNEL(0, 1, 2, AD7193_CH_AIN1P_AIN2M),
+	AD719x_DIFF_CHANNEL(1, 3, 4, AD7193_CH_AIN3P_AIN4M),
+	AD719x_DIFF_CHANNEL(2, 5, 6, AD7193_CH_AIN5P_AIN6M),
+	AD719x_DIFF_CHANNEL(3, 7, 8, AD7193_CH_AIN7P_AIN8M),
+	AD719x_TEMP_CHANNEL(4, AD7193_CH_TEMP),
+	AD719x_SHORTED_CHANNEL(5, 2, AD7193_CH_AIN2P_AIN2M),
+	AD719x_CHANNEL(6, 1, AD7193_CH_AIN1),
+	AD719x_CHANNEL(7, 2, AD7193_CH_AIN2),
+	AD719x_CHANNEL(8, 3, AD7193_CH_AIN3),
+	AD719x_CHANNEL(9, 4, AD7193_CH_AIN4),
+	AD719x_CHANNEL(10, 5, AD7193_CH_AIN5),
+	AD719x_CHANNEL(11, 6, AD7193_CH_AIN6),
+	AD719x_CHANNEL(12, 7, AD7193_CH_AIN7),
+	AD719x_CHANNEL(13, 8, AD7193_CH_AIN8),
+	IIO_CHAN_SOFT_TIMESTAMP(14),
+};
+
+static const struct ad7192_chip_info ad7192_chip_info_tbl[] = {
+	[ID_AD7190] = {
+		.chip_id = CHIPID_AD7190,
+		.name = "ad7190",
+	},
+	[ID_AD7192] = {
+		.chip_id = CHIPID_AD7192,
+		.name = "ad7192",
+	},
+	[ID_AD7193] = {
+		.chip_id = CHIPID_AD7193,
+		.name = "ad7193",
+	},
+	[ID_AD7195] = {
+		.chip_id = CHIPID_AD7195,
+		.name = "ad7195",
+	},
+};
+
+static int ad7192_channels_config(struct iio_dev *indio_dev)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	switch (st->chip_info->chip_id) {
+	case CHIPID_AD7193:
+		indio_dev->channels = ad7193_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ad7193_channels);
+		break;
+	default:
+		indio_dev->channels = ad7192_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ad7192_channels);
+		break;
+	}
+
+	return 0;
+}
+
+static void ad7192_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
+static void ad7192_clk_disable(void *clk)
+{
+	clk_disable_unprepare(clk);
+}
+
+static int ad7192_probe(struct spi_device *spi)
+{
+	struct ad7192_state *st;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	if (!spi->irq) {
+		dev_err(&spi->dev, "no IRQ?\n");
+		return -ENODEV;
+	}
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	mutex_init(&st->lock);
+
+	st->avdd = devm_regulator_get(&spi->dev, "avdd");
+	if (IS_ERR(st->avdd))
+		return PTR_ERR(st->avdd);
+
+	ret = regulator_enable(st->avdd);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to enable specified AVdd supply\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, ad7192_reg_disable, st->avdd);
+	if (ret)
+		return ret;
+
+	st->dvdd = devm_regulator_get(&spi->dev, "dvdd");
+	if (IS_ERR(st->dvdd))
+		return PTR_ERR(st->dvdd);
+
+	ret = regulator_enable(st->dvdd);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to enable specified DVdd supply\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, ad7192_reg_disable, st->dvdd);
+	if (ret)
+		return ret;
+
+	ret = regulator_get_voltage(st->avdd);
+	if (ret < 0) {
+		dev_err(&spi->dev, "Device tree error, reference voltage undefined\n");
+		return ret;
+	}
+	st->int_vref_mv = ret / 1000;
+
+	st->chip_info = of_device_get_match_data(&spi->dev);
+	indio_dev->name = st->chip_info->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = ad7192_channels_config(indio_dev);
+	if (ret < 0)
+		return ret;
+
+	if (st->chip_info->chip_id == CHIPID_AD7195)
+		indio_dev->info = &ad7195_info;
+	else
+		indio_dev->info = &ad7192_info;
+
+	ad_sd_init(&st->sd, indio_dev, spi, &ad7192_sigma_delta_info);
+
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	st->fclk = AD7192_INT_FREQ_MHZ;
+
+	st->mclk = devm_clk_get_optional(&spi->dev, "mclk");
+	if (IS_ERR(st->mclk))
+		return PTR_ERR(st->mclk);
+
+	st->clock_sel = ad7192_of_clock_select(st);
+
+	if (st->clock_sel == AD7192_CLK_EXT_MCLK1_2 ||
+	    st->clock_sel == AD7192_CLK_EXT_MCLK2) {
+		ret = clk_prepare_enable(st->mclk);
+		if (ret < 0)
+			return ret;
+
+		ret = devm_add_action_or_reset(&spi->dev, ad7192_clk_disable,
+					       st->mclk);
+		if (ret)
+			return ret;
+
+		st->fclk = clk_get_rate(st->mclk);
+		if (!ad7192_valid_external_frequency(st->fclk)) {
+			dev_err(&spi->dev,
+				"External clock frequency out of bounds\n");
+			return -EINVAL;
+		}
+	}
+
+	ret = ad7192_setup(st, spi->dev.of_node);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id ad7192_of_match[] = {
+	{ .compatible = "adi,ad7190", .data = &ad7192_chip_info_tbl[ID_AD7190] },
+	{ .compatible = "adi,ad7192", .data = &ad7192_chip_info_tbl[ID_AD7192] },
+	{ .compatible = "adi,ad7193", .data = &ad7192_chip_info_tbl[ID_AD7193] },
+	{ .compatible = "adi,ad7195", .data = &ad7192_chip_info_tbl[ID_AD7195] },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad7192_of_match);
+
+static struct spi_driver ad7192_driver = {
+	.driver = {
+		.name	= "ad7192",
+		.of_match_table = ad7192_of_match,
+	},
+	.probe		= ad7192_probe,
+};
+module_spi_driver(ad7192_driver);
+
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7193, AD7195 ADC");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index c8524f098883..468c2656d2be 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -37,7 +37,7 @@ struct ad7266_state {
 	struct gpio_desc	*gpios[3];
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * The buffer needs to be large enough to hold two samples (4 bytes) and
 	 * the naturally aligned timestamp (8 bytes).
@@ -45,7 +45,7 @@ struct ad7266_state {
 	struct {
 		__be16 sample[2];
 		s64 timestamp;
-	} data ____cacheline_aligned;
+	} data __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad7266_wakeup(struct ad7266_state *st)
@@ -74,8 +74,6 @@ static int ad7266_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
 	.preenable = &ad7266_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
 	.postdisable = &ad7266_postdisable,
 };
 
@@ -161,7 +159,8 @@ static int ad7266_read_raw(struct iio_dev *indio_dev,
 
 		*val = (*val >> 2) & 0xfff;
 		if (chan->scan_type.sign == 's')
-			*val = sign_extend32(*val, 11);
+			*val = sign_extend32(*val,
+					     chan->scan_type.realbits - 1);
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
@@ -379,6 +378,11 @@ static const char * const ad7266_gpio_labels[] = {
 	"ad0", "ad1", "ad2",
 };
 
+static void ad7266_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7266_probe(struct spi_device *spi)
 {
 	struct ad7266_platform_data *pdata = spi->dev.platform_data;
@@ -399,9 +403,13 @@ static int ad7266_probe(struct spi_device *spi)
 		if (ret)
 			return ret;
 
+		ret = devm_add_action_or_reset(&spi->dev, ad7266_reg_disable, st->reg);
+		if (ret)
+			return ret;
+
 		ret = regulator_get_voltage(st->reg);
 		if (ret < 0)
-			goto error_disable_reg;
+			return ret;
 
 		st->vref_mv = ret / 1000;
 	} else {
@@ -424,7 +432,7 @@ static int ad7266_probe(struct spi_device *spi)
 						      GPIOD_OUT_LOW);
 				if (IS_ERR(st->gpios[i])) {
 					ret = PTR_ERR(st->gpios[i]);
-					goto error_disable_reg;
+					return ret;
 				}
 			}
 		}
@@ -434,11 +442,8 @@ static int ad7266_probe(struct spi_device *spi)
 		st->mode = AD7266_MODE_DIFF;
 	}
 
-	spi_set_drvdata(spi, indio_dev);
 	st->spi = spi;
 
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ad7266_info;
@@ -462,37 +467,12 @@ static int ad7266_probe(struct spi_device *spi)
 	spi_message_add_tail(&st->single_xfer[1], &st->single_msg);
 	spi_message_add_tail(&st->single_xfer[2], &st->single_msg);
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, &iio_pollfunc_store_time,
 		&ad7266_trigger_handler, &iio_triggered_buffer_setup_ops);
 	if (ret)
-		goto error_disable_reg;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_buffer_cleanup;
-
-	return 0;
-
-error_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	if (!IS_ERR(st->reg))
-		regulator_disable(st->reg);
-
-	return ret;
-}
+		return ret;
 
-static int ad7266_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7266_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (!IS_ERR(st->reg))
-		regulator_disable(st->reg);
-
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7266_id[] = {
@@ -507,7 +487,6 @@ static struct spi_driver ad7266_driver = {
 		.name	= "ad7266",
 	},
 	.probe		= ad7266_probe,
-	.remove		= ad7266_remove,
 	.id_table	= ad7266_id,
 };
 module_spi_driver(ad7266_driver);
diff --git a/drivers/iio/adc/ad7280a.c b/drivers/iio/adc/ad7280a.c
new file mode 100644
index 000000000000..d4a4e15c8244
--- /dev/null
+++ b/drivers/iio/adc/ad7280a.c
@@ -0,0 +1,1111 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AD7280A Lithium Ion Battery Monitoring System
+ *
+ * Copyright 2011 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/crc8.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/spi/spi.h>
+
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+
+/* Registers */
+
+#define AD7280A_CELL_VOLTAGE_1_REG		0x0  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_2_REG		0x1  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_3_REG		0x2  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_4_REG		0x3  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_5_REG		0x4  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_6_REG		0x5  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_1_REG			0x6  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_2_REG			0x7  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_3_REG			0x8  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_4_REG			0x9  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_5_REG			0xA  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_6_REG			0xB  /* D11 to D0, Read only */
+#define AD7280A_SELF_TEST_REG			0xC  /* D11 to D0, Read only */
+
+#define AD7280A_CTRL_HB_REG			0xD  /* D15 to D8, Read/write */
+#define   AD7280A_CTRL_HB_CONV_INPUT_MSK		GENMASK(7, 6)
+#define     AD7280A_CTRL_HB_CONV_INPUT_ALL			0
+#define     AD7280A_CTRL_HB_CONV_INPUT_6CELL_AUX1_3_5		1
+#define     AD7280A_CTRL_HB_CONV_INPUT_6CELL			2
+#define     AD7280A_CTRL_HB_CONV_INPUT_SELF_TEST		3
+#define   AD7280A_CTRL_HB_CONV_RREAD_MSK		GENMASK(5, 4)
+#define     AD7280A_CTRL_HB_CONV_RREAD_ALL			0
+#define     AD7280A_CTRL_HB_CONV_RREAD_6CELL_AUX1_3_5		1
+#define     AD7280A_CTRL_HB_CONV_RREAD_6CELL			2
+#define     AD7280A_CTRL_HB_CONV_RREAD_NO		        3
+#define   AD7280A_CTRL_HB_CONV_START_MSK		BIT(3)
+#define     AD7280A_CTRL_HB_CONV_START_CNVST			0
+#define     AD7280A_CTRL_HB_CONV_START_CS			1
+#define   AD7280A_CTRL_HB_CONV_AVG_MSK			GENMASK(2, 1)
+#define     AD7280A_CTRL_HB_CONV_AVG_DIS			0
+#define     AD7280A_CTRL_HB_CONV_AVG_2				1
+#define     AD7280A_CTRL_HB_CONV_AVG_4			        2
+#define     AD7280A_CTRL_HB_CONV_AVG_8			        3
+#define   AD7280A_CTRL_HB_PWRDN_SW			BIT(0)
+
+#define AD7280A_CTRL_LB_REG			0xE  /* D7 to D0, Read/write */
+#define   AD7280A_CTRL_LB_SWRST_MSK			BIT(7)
+#define   AD7280A_CTRL_LB_ACQ_TIME_MSK			GENMASK(6, 5)
+#define     AD7280A_CTRL_LB_ACQ_TIME_400ns			0
+#define     AD7280A_CTRL_LB_ACQ_TIME_800ns			1
+#define     AD7280A_CTRL_LB_ACQ_TIME_1200ns			2
+#define     AD7280A_CTRL_LB_ACQ_TIME_1600ns			3
+#define   AD7280A_CTRL_LB_MUST_SET			BIT(4)
+#define   AD7280A_CTRL_LB_THERMISTOR_MSK		BIT(3)
+#define   AD7280A_CTRL_LB_LOCK_DEV_ADDR_MSK		BIT(2)
+#define   AD7280A_CTRL_LB_INC_DEV_ADDR_MSK		BIT(1)
+#define   AD7280A_CTRL_LB_DAISY_CHAIN_RB_MSK		BIT(0)
+
+#define AD7280A_CELL_OVERVOLTAGE_REG		0xF  /* D7 to D0, Read/write */
+#define AD7280A_CELL_UNDERVOLTAGE_REG		0x10 /* D7 to D0, Read/write */
+#define AD7280A_AUX_ADC_OVERVOLTAGE_REG		0x11 /* D7 to D0, Read/write */
+#define AD7280A_AUX_ADC_UNDERVOLTAGE_REG	0x12 /* D7 to D0, Read/write */
+
+#define AD7280A_ALERT_REG			0x13 /* D7 to D0, Read/write */
+#define   AD7280A_ALERT_REMOVE_MSK			GENMASK(3, 0)
+#define     AD7280A_ALERT_REMOVE_AUX5			BIT(0)
+#define     AD7280A_ALERT_REMOVE_AUX3_AUX5		BIT(1)
+#define     AD7280A_ALERT_REMOVE_VIN5			BIT(2)
+#define     AD7280A_ALERT_REMOVE_VIN4_VIN5		BIT(3)
+#define   AD7280A_ALERT_GEN_STATIC_HIGH			BIT(6)
+#define   AD7280A_ALERT_RELAY_SIG_CHAIN_DOWN		(BIT(7) | BIT(6))
+
+#define AD7280A_CELL_BALANCE_REG		0x14 /* D7 to D0, Read/write */
+#define  AD7280A_CELL_BALANCE_CHAN_BITMAP_MSK		GENMASK(7, 2)
+#define AD7280A_CB1_TIMER_REG			0x15 /* D7 to D0, Read/write */
+#define  AD7280A_CB_TIMER_VAL_MSK			GENMASK(7, 3)
+#define AD7280A_CB2_TIMER_REG			0x16 /* D7 to D0, Read/write */
+#define AD7280A_CB3_TIMER_REG			0x17 /* D7 to D0, Read/write */
+#define AD7280A_CB4_TIMER_REG			0x18 /* D7 to D0, Read/write */
+#define AD7280A_CB5_TIMER_REG			0x19 /* D7 to D0, Read/write */
+#define AD7280A_CB6_TIMER_REG			0x1A /* D7 to D0, Read/write */
+#define AD7280A_PD_TIMER_REG			0x1B /* D7 to D0, Read/write */
+#define AD7280A_READ_REG			0x1C /* D7 to D0, Read/write */
+#define   AD7280A_READ_ADDR_MSK				GENMASK(7, 2)
+#define AD7280A_CNVST_CTRL_REG			0x1D /* D7 to D0, Read/write */
+
+/* Transfer fields */
+#define AD7280A_TRANS_WRITE_DEVADDR_MSK		GENMASK(31, 27)
+#define AD7280A_TRANS_WRITE_ADDR_MSK		GENMASK(26, 21)
+#define AD7280A_TRANS_WRITE_VAL_MSK		GENMASK(20, 13)
+#define AD7280A_TRANS_WRITE_ALL_MSK		BIT(12)
+#define AD7280A_TRANS_WRITE_CRC_MSK		GENMASK(10, 3)
+#define AD7280A_TRANS_WRITE_RES_PATTERN		0x2
+
+/* Layouts differ for channel vs other registers */
+#define AD7280A_TRANS_READ_DEVADDR_MSK		GENMASK(31, 27)
+#define AD7280A_TRANS_READ_CONV_CHANADDR_MSK	GENMASK(26, 23)
+#define AD7280A_TRANS_READ_CONV_DATA_MSK	GENMASK(22, 11)
+#define AD7280A_TRANS_READ_REG_REGADDR_MSK	GENMASK(26, 21)
+#define AD7280A_TRANS_READ_REG_DATA_MSK		GENMASK(20, 13)
+#define AD7280A_TRANS_READ_WRITE_ACK_MSK	BIT(10)
+#define AD7280A_TRANS_READ_CRC_MSK		GENMASK(9, 2)
+
+/* Magic value used to indicate this special case */
+#define AD7280A_ALL_CELLS				(0xAD << 16)
+
+#define AD7280A_MAX_SPI_CLK_HZ		700000 /* < 1MHz */
+#define AD7280A_MAX_CHAIN		8
+#define AD7280A_CELLS_PER_DEV		6
+#define AD7280A_BITS			12
+#define AD7280A_NUM_CH			(AD7280A_AUX_ADC_6_REG - \
+					AD7280A_CELL_VOLTAGE_1_REG + 1)
+
+#define AD7280A_CALC_VOLTAGE_CHAN_NUM(d, c) (((d) * AD7280A_CELLS_PER_DEV) + \
+					     (c))
+#define AD7280A_CALC_TEMP_CHAN_NUM(d, c)    (((d) * AD7280A_CELLS_PER_DEV) + \
+					     (c) - AD7280A_CELLS_PER_DEV)
+
+#define AD7280A_DEVADDR_MASTER		0
+#define AD7280A_DEVADDR_ALL		0x1F
+
+static const unsigned short ad7280a_n_avg[4] = {1, 2, 4, 8};
+static const unsigned short ad7280a_t_acq_ns[4] = {470, 1030, 1510, 1945};
+
+/* 5-bit device address is sent LSB first */
+static unsigned int ad7280a_devaddr(unsigned int addr)
+{
+	return ((addr & 0x1) << 4) |
+	       ((addr & 0x2) << 2) |
+	       (addr & 0x4) |
+	       ((addr & 0x8) >> 2) |
+	       ((addr & 0x10) >> 4);
+}
+
+/*
+ * During a read a valid write is mandatory.
+ * So writing to the highest available address (Address 0x1F) and setting the
+ * address all parts bit to 0 is recommended.
+ * So the TXVAL is AD7280A_DEVADDR_ALL + CRC
+ */
+#define AD7280A_READ_TXVAL	0xF800030A
+
+/*
+ * AD7280 CRC
+ *
+ * P(x) = x^8 + x^5 + x^3 + x^2 + x^1 + x^0 = 0b100101111 => 0x2F
+ */
+#define POLYNOM		0x2F
+
+struct ad7280_state {
+	struct spi_device		*spi;
+	struct iio_chan_spec		*channels;
+	unsigned int			chain_last_alert_ignore;
+	bool				thermistor_term_en;
+	int				slave_num;
+	int				scan_cnt;
+	int				readback_delay_us;
+	unsigned char			crc_tab[CRC8_TABLE_SIZE];
+	u8				oversampling_ratio;
+	u8				acquisition_time;
+	unsigned char			ctrl_lb;
+	unsigned char			cell_threshhigh;
+	unsigned char			cell_threshlow;
+	unsigned char			aux_threshhigh;
+	unsigned char			aux_threshlow;
+	unsigned char			cb_mask[AD7280A_MAX_CHAIN];
+	struct mutex			lock; /* protect sensor state */
+
+	__be32				tx __aligned(IIO_DMA_MINALIGN);
+	__be32				rx;
+};
+
+static unsigned char ad7280_calc_crc8(unsigned char *crc_tab, unsigned int val)
+{
+	unsigned char crc;
+
+	crc = crc_tab[val >> 16 & 0xFF];
+	crc = crc_tab[crc ^ (val >> 8 & 0xFF)];
+
+	return crc ^ (val & 0xFF);
+}
+
+static int ad7280_check_crc(struct ad7280_state *st, unsigned int val)
+{
+	unsigned char crc = ad7280_calc_crc8(st->crc_tab, val >> 10);
+
+	if (crc != ((val >> 2) & 0xFF))
+		return -EIO;
+
+	return 0;
+}
+
+/*
+ * After initiating a conversion sequence we need to wait until the conversion
+ * is done. The delay is typically in the range of 15..30us however depending on
+ * the number of devices in the daisy chain, the number of averages taken,
+ * conversion delays and acquisition time options it may take up to 250us, in
+ * this case we better sleep instead of busy wait.
+ */
+
+static void ad7280_delay(struct ad7280_state *st)
+{
+	if (st->readback_delay_us < 50)
+		udelay(st->readback_delay_us);
+	else
+		usleep_range(250, 500);
+}
+
+static int __ad7280_read32(struct ad7280_state *st, unsigned int *val)
+{
+	int ret;
+	struct spi_transfer t = {
+		.tx_buf	= &st->tx,
+		.rx_buf = &st->rx,
+		.len = sizeof(st->tx),
+	};
+
+	st->tx = cpu_to_be32(AD7280A_READ_TXVAL);
+
+	ret = spi_sync_transfer(st->spi, &t, 1);
+	if (ret)
+		return ret;
+
+	*val = be32_to_cpu(st->rx);
+
+	return 0;
+}
+
+static int ad7280_write(struct ad7280_state *st, unsigned int devaddr,
+			unsigned int addr, bool all, unsigned int val)
+{
+	unsigned int reg = FIELD_PREP(AD7280A_TRANS_WRITE_DEVADDR_MSK, devaddr) |
+		FIELD_PREP(AD7280A_TRANS_WRITE_ADDR_MSK, addr) |
+		FIELD_PREP(AD7280A_TRANS_WRITE_VAL_MSK, val) |
+		FIELD_PREP(AD7280A_TRANS_WRITE_ALL_MSK, all);
+
+	reg |= FIELD_PREP(AD7280A_TRANS_WRITE_CRC_MSK,
+			ad7280_calc_crc8(st->crc_tab, reg >> 11));
+	/* Reserved b010 pattern not included crc calc */
+	reg |= AD7280A_TRANS_WRITE_RES_PATTERN;
+
+	st->tx = cpu_to_be32(reg);
+
+	return spi_write(st->spi, &st->tx, sizeof(st->tx));
+}
+
+static int ad7280_read_reg(struct ad7280_state *st, unsigned int devaddr,
+			   unsigned int addr)
+{
+	int ret;
+	unsigned int tmp;
+
+	/* turns off the read operation on all parts */
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_HB_REG, 1,
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_INPUT_MSK,
+				      AD7280A_CTRL_HB_CONV_INPUT_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_RREAD_MSK,
+				      AD7280A_CTRL_HB_CONV_RREAD_NO) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK,
+				      st->oversampling_ratio));
+	if (ret)
+		return ret;
+
+	/* turns on the read operation on the addressed part */
+	ret = ad7280_write(st, devaddr, AD7280A_CTRL_HB_REG, 0,
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_INPUT_MSK,
+				      AD7280A_CTRL_HB_CONV_INPUT_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_RREAD_MSK,
+				      AD7280A_CTRL_HB_CONV_RREAD_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK,
+				      st->oversampling_ratio));
+	if (ret)
+		return ret;
+
+	/* Set register address on the part to be read from */
+	ret = ad7280_write(st, devaddr, AD7280A_READ_REG, 0,
+			   FIELD_PREP(AD7280A_READ_ADDR_MSK, addr));
+	if (ret)
+		return ret;
+
+	ret = __ad7280_read32(st, &tmp);
+	if (ret)
+		return ret;
+
+	if (ad7280_check_crc(st, tmp))
+		return -EIO;
+
+	if ((FIELD_GET(AD7280A_TRANS_READ_DEVADDR_MSK, tmp) != devaddr) ||
+	    (FIELD_GET(AD7280A_TRANS_READ_REG_REGADDR_MSK, tmp) != addr))
+		return -EFAULT;
+
+	return FIELD_GET(AD7280A_TRANS_READ_REG_DATA_MSK, tmp);
+}
+
+static int ad7280_read_channel(struct ad7280_state *st, unsigned int devaddr,
+			       unsigned int addr)
+{
+	int ret;
+	unsigned int tmp;
+
+	ret = ad7280_write(st, devaddr, AD7280A_READ_REG, 0,
+			   FIELD_PREP(AD7280A_READ_ADDR_MSK, addr));
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_HB_REG, 1,
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_INPUT_MSK,
+				      AD7280A_CTRL_HB_CONV_INPUT_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_RREAD_MSK,
+				      AD7280A_CTRL_HB_CONV_RREAD_NO) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK,
+				      st->oversampling_ratio));
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, devaddr, AD7280A_CTRL_HB_REG, 0,
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_INPUT_MSK,
+				      AD7280A_CTRL_HB_CONV_INPUT_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_RREAD_MSK,
+				      AD7280A_CTRL_HB_CONV_RREAD_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_START_MSK,
+				      AD7280A_CTRL_HB_CONV_START_CS) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK,
+				      st->oversampling_ratio));
+	if (ret)
+		return ret;
+
+	ad7280_delay(st);
+
+	ret = __ad7280_read32(st, &tmp);
+	if (ret)
+		return ret;
+
+	if (ad7280_check_crc(st, tmp))
+		return -EIO;
+
+	if ((FIELD_GET(AD7280A_TRANS_READ_DEVADDR_MSK, tmp) != devaddr) ||
+	    (FIELD_GET(AD7280A_TRANS_READ_CONV_CHANADDR_MSK, tmp) != addr))
+		return -EFAULT;
+
+	return FIELD_GET(AD7280A_TRANS_READ_CONV_DATA_MSK, tmp);
+}
+
+static int ad7280_read_all_channels(struct ad7280_state *st, unsigned int cnt,
+				    unsigned int *array)
+{
+	int i, ret;
+	unsigned int tmp, sum = 0;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ_REG, 1,
+			   AD7280A_CELL_VOLTAGE_1_REG << 2);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_HB_REG, 1,
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_INPUT_MSK,
+				      AD7280A_CTRL_HB_CONV_INPUT_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_RREAD_MSK,
+				      AD7280A_CTRL_HB_CONV_RREAD_ALL) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_START_MSK,
+				      AD7280A_CTRL_HB_CONV_START_CS) |
+			   FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK,
+				      st->oversampling_ratio));
+	if (ret)
+		return ret;
+
+	ad7280_delay(st);
+
+	for (i = 0; i < cnt; i++) {
+		ret = __ad7280_read32(st, &tmp);
+		if (ret)
+			return ret;
+
+		if (ad7280_check_crc(st, tmp))
+			return -EIO;
+
+		if (array)
+			array[i] = tmp;
+		/* only sum cell voltages */
+		if (FIELD_GET(AD7280A_TRANS_READ_CONV_CHANADDR_MSK, tmp) <=
+		    AD7280A_CELL_VOLTAGE_6_REG)
+			sum += FIELD_GET(AD7280A_TRANS_READ_CONV_DATA_MSK, tmp);
+	}
+
+	return sum;
+}
+
+static void ad7280_sw_power_down(void *data)
+{
+	struct ad7280_state *st = data;
+
+	ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_HB_REG, 1,
+		     AD7280A_CTRL_HB_PWRDN_SW |
+		     FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK, st->oversampling_ratio));
+}
+
+static int ad7280_chain_setup(struct ad7280_state *st)
+{
+	unsigned int val, n;
+	int ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_LB_REG, 1,
+			   FIELD_PREP(AD7280A_CTRL_LB_DAISY_CHAIN_RB_MSK, 1) |
+			   FIELD_PREP(AD7280A_CTRL_LB_LOCK_DEV_ADDR_MSK, 1) |
+			   AD7280A_CTRL_LB_MUST_SET |
+			   FIELD_PREP(AD7280A_CTRL_LB_SWRST_MSK, 1) |
+			   st->ctrl_lb);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_LB_REG, 1,
+			   FIELD_PREP(AD7280A_CTRL_LB_DAISY_CHAIN_RB_MSK, 1) |
+			   FIELD_PREP(AD7280A_CTRL_LB_LOCK_DEV_ADDR_MSK, 1) |
+			   AD7280A_CTRL_LB_MUST_SET |
+			   FIELD_PREP(AD7280A_CTRL_LB_SWRST_MSK, 0) |
+			   st->ctrl_lb);
+	if (ret)
+		goto error_power_down;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ_REG, 1,
+			   FIELD_PREP(AD7280A_READ_ADDR_MSK, AD7280A_CTRL_LB_REG));
+	if (ret)
+		goto error_power_down;
+
+	for (n = 0; n <= AD7280A_MAX_CHAIN; n++) {
+		ret = __ad7280_read32(st, &val);
+		if (ret)
+			goto error_power_down;
+
+		if (val == 0)
+			return n - 1;
+
+		if (ad7280_check_crc(st, val)) {
+			ret = -EIO;
+			goto error_power_down;
+		}
+
+		if (n != ad7280a_devaddr(FIELD_GET(AD7280A_TRANS_READ_DEVADDR_MSK, val))) {
+			ret = -EIO;
+			goto error_power_down;
+		}
+	}
+	ret = -EFAULT;
+
+error_power_down:
+	ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CTRL_HB_REG, 1,
+		     AD7280A_CTRL_HB_PWRDN_SW |
+		     FIELD_PREP(AD7280A_CTRL_HB_CONV_AVG_MSK, st->oversampling_ratio));
+
+	return ret;
+}
+
+static ssize_t ad7280_show_balance_sw(struct iio_dev *indio_dev,
+				      uintptr_t private,
+				      const struct iio_chan_spec *chan, char *buf)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+
+	return sysfs_emit(buf, "%d\n",
+			  !!(st->cb_mask[chan->address >> 8] &
+			     BIT(chan->address & 0xFF)));
+}
+
+static ssize_t ad7280_store_balance_sw(struct iio_dev *indio_dev,
+				       uintptr_t private,
+				       const struct iio_chan_spec *chan,
+				       const char *buf, size_t len)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+	unsigned int devaddr, ch;
+	bool readin;
+	int ret;
+
+	ret = kstrtobool(buf, &readin);
+	if (ret)
+		return ret;
+
+	devaddr = chan->address >> 8;
+	ch = chan->address & 0xFF;
+
+	mutex_lock(&st->lock);
+	if (readin)
+		st->cb_mask[devaddr] |= BIT(ch);
+	else
+		st->cb_mask[devaddr] &= ~BIT(ch);
+
+	ret = ad7280_write(st, devaddr, AD7280A_CELL_BALANCE_REG, 0,
+			   FIELD_PREP(AD7280A_CELL_BALANCE_CHAN_BITMAP_MSK,
+				      st->cb_mask[devaddr]));
+	mutex_unlock(&st->lock);
+
+	return ret ? ret : len;
+}
+
+static ssize_t ad7280_show_balance_timer(struct iio_dev *indio_dev,
+					 uintptr_t private,
+					 const struct iio_chan_spec *chan,
+					 char *buf)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+	unsigned int msecs;
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = ad7280_read_reg(st, chan->address >> 8,
+			      (chan->address & 0xFF) + AD7280A_CB1_TIMER_REG);
+	mutex_unlock(&st->lock);
+
+	if (ret < 0)
+		return ret;
+
+	msecs = FIELD_GET(AD7280A_CB_TIMER_VAL_MSK, ret) * 71500;
+
+	return sysfs_emit(buf, "%u.%u\n", msecs / 1000, msecs % 1000);
+}
+
+static ssize_t ad7280_store_balance_timer(struct iio_dev *indio_dev,
+					  uintptr_t private,
+					  const struct iio_chan_spec *chan,
+					  const char *buf, size_t len)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+	int val, val2;
+	int ret;
+
+	ret = iio_str_to_fixpoint(buf, 1000, &val, &val2);
+	if (ret)
+		return ret;
+
+	val = val * 1000 + val2;
+	val /= 71500;
+
+	if (val > 31)
+		return -EINVAL;
+
+	mutex_lock(&st->lock);
+	ret = ad7280_write(st, chan->address >> 8,
+			   (chan->address & 0xFF) + AD7280A_CB1_TIMER_REG, 0,
+			   FIELD_PREP(AD7280A_CB_TIMER_VAL_MSK, val));
+	mutex_unlock(&st->lock);
+
+	return ret ? ret : len;
+}
+
+static const struct iio_chan_spec_ext_info ad7280_cell_ext_info[] = {
+	{
+		.name = "balance_switch_en",
+		.read = ad7280_show_balance_sw,
+		.write = ad7280_store_balance_sw,
+		.shared = IIO_SEPARATE,
+	}, {
+		.name = "balance_switch_timer",
+		.read = ad7280_show_balance_timer,
+		.write = ad7280_store_balance_timer,
+		.shared = IIO_SEPARATE,
+	},
+	{}
+};
+
+static const struct iio_event_spec ad7280_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
+static void ad7280_voltage_channel_init(struct iio_chan_spec *chan, int i,
+					bool irq_present)
+{
+	chan->type = IIO_VOLTAGE;
+	chan->differential = 1;
+	chan->channel = i;
+	chan->channel2 = chan->channel + 1;
+	if (irq_present) {
+		chan->event_spec = ad7280_events;
+		chan->num_event_specs = ARRAY_SIZE(ad7280_events);
+	}
+	chan->ext_info = ad7280_cell_ext_info;
+}
+
+static void ad7280_temp_channel_init(struct iio_chan_spec *chan, int i,
+				     bool irq_present)
+{
+	chan->type = IIO_TEMP;
+	chan->channel = i;
+	if (irq_present) {
+		chan->event_spec = ad7280_events;
+		chan->num_event_specs = ARRAY_SIZE(ad7280_events);
+	}
+}
+
+static void ad7280_common_fields_init(struct iio_chan_spec *chan, int addr,
+				      int cnt)
+{
+	chan->indexed = 1;
+	chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+	chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE);
+	chan->info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO);
+	chan->address = addr;
+	chan->scan_index = cnt;
+	chan->scan_type.sign = 'u';
+	chan->scan_type.realbits = 12;
+	chan->scan_type.storagebits = 32;
+}
+
+static void ad7280_total_voltage_channel_init(struct iio_chan_spec *chan,
+					      int cnt, int dev)
+{
+	chan->type = IIO_VOLTAGE;
+	chan->differential = 1;
+	chan->channel = 0;
+	chan->channel2 = dev * AD7280A_CELLS_PER_DEV;
+	chan->address = AD7280A_ALL_CELLS;
+	chan->indexed = 1;
+	chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+	chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE);
+	chan->scan_index = cnt;
+	chan->scan_type.sign = 'u';
+	chan->scan_type.realbits = 32;
+	chan->scan_type.storagebits = 32;
+}
+
+static void ad7280_init_dev_channels(struct ad7280_state *st, int dev, int *cnt,
+				     bool irq_present)
+{
+	int addr, ch, i;
+	struct iio_chan_spec *chan;
+
+	for (ch = AD7280A_CELL_VOLTAGE_1_REG; ch <= AD7280A_AUX_ADC_6_REG; ch++) {
+		chan = &st->channels[*cnt];
+
+		if (ch < AD7280A_AUX_ADC_1_REG) {
+			i = AD7280A_CALC_VOLTAGE_CHAN_NUM(dev, ch);
+			ad7280_voltage_channel_init(chan, i, irq_present);
+		} else {
+			i = AD7280A_CALC_TEMP_CHAN_NUM(dev, ch);
+			ad7280_temp_channel_init(chan, i, irq_present);
+		}
+
+		addr = ad7280a_devaddr(dev) << 8 | ch;
+		ad7280_common_fields_init(chan, addr, *cnt);
+
+		(*cnt)++;
+	}
+}
+
+static int ad7280_channel_init(struct ad7280_state *st, bool irq_present)
+{
+	int dev, cnt = 0;
+
+	st->channels = devm_kcalloc(&st->spi->dev, (st->slave_num + 1) * 12 + 1,
+				    sizeof(*st->channels), GFP_KERNEL);
+	if (!st->channels)
+		return -ENOMEM;
+
+	for (dev = 0; dev <= st->slave_num; dev++)
+		ad7280_init_dev_channels(st, dev, &cnt, irq_present);
+
+	ad7280_total_voltage_channel_init(&st->channels[cnt], cnt, dev);
+
+	return cnt + 1;
+}
+
+static int ad7280a_read_thresh(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       enum iio_event_type type,
+			       enum iio_event_direction dir,
+			       enum iio_event_info info, int *val, int *val2)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+
+	switch (chan->type) {
+	case IIO_VOLTAGE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			*val = 1000 + (st->cell_threshhigh * 1568L) / 100;
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			*val = 1000 + (st->cell_threshlow * 1568L) / 100;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case IIO_TEMP:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			*val = ((st->aux_threshhigh) * 196L) / 10;
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			*val = (st->aux_threshlow * 196L) / 10;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7280a_write_thresh(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir,
+				enum iio_event_info info,
+				int val, int val2)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+	unsigned int addr;
+	long value;
+	int ret;
+
+	if (val2 != 0)
+		return -EINVAL;
+
+	mutex_lock(&st->lock);
+	switch (chan->type) {
+	case IIO_VOLTAGE:
+		value = ((val - 1000) * 100) / 1568; /* LSB 15.68mV */
+		value = clamp(value, 0L, 0xFFL);
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			addr = AD7280A_CELL_OVERVOLTAGE_REG;
+			ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, addr,
+					   1, value);
+			if (ret)
+				break;
+			st->cell_threshhigh = value;
+			break;
+		case IIO_EV_DIR_FALLING:
+			addr = AD7280A_CELL_UNDERVOLTAGE_REG;
+			ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, addr,
+					   1, value);
+			if (ret)
+				break;
+			st->cell_threshlow = value;
+			break;
+		default:
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+		break;
+	case IIO_TEMP:
+		value = (val * 10) / 196; /* LSB 19.6mV */
+		value = clamp(value, 0L, 0xFFL);
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			addr = AD7280A_AUX_ADC_OVERVOLTAGE_REG;
+			ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, addr,
+					   1, value);
+			if (ret)
+				break;
+			st->aux_threshhigh = value;
+			break;
+		case IIO_EV_DIR_FALLING:
+			addr = AD7280A_AUX_ADC_UNDERVOLTAGE_REG;
+			ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, addr,
+					   1, value);
+			if (ret)
+				break;
+			st->aux_threshlow = value;
+			break;
+		default:
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+		break;
+	default:
+		ret = -EINVAL;
+		goto err_unlock;
+	}
+
+err_unlock:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static irqreturn_t ad7280_event_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct ad7280_state *st = iio_priv(indio_dev);
+	unsigned int *channels;
+	int i, ret;
+
+	channels = kcalloc(st->scan_cnt, sizeof(*channels), GFP_KERNEL);
+	if (!channels)
+		return IRQ_HANDLED;
+
+	ret = ad7280_read_all_channels(st, st->scan_cnt, channels);
+	if (ret < 0)
+		goto out;
+
+	for (i = 0; i < st->scan_cnt; i++) {
+		unsigned int val;
+
+		val = FIELD_GET(AD7280A_TRANS_READ_CONV_DATA_MSK, channels[i]);
+		if (FIELD_GET(AD7280A_TRANS_READ_CONV_CHANADDR_MSK, channels[i]) <=
+		    AD7280A_CELL_VOLTAGE_6_REG) {
+			if (val >= st->cell_threshhigh) {
+				u64 tmp = IIO_EVENT_CODE(IIO_VOLTAGE, 1, 0,
+							 IIO_EV_DIR_RISING,
+							 IIO_EV_TYPE_THRESH,
+							 0, 0, 0);
+				iio_push_event(indio_dev, tmp,
+					       iio_get_time_ns(indio_dev));
+			} else if (val <= st->cell_threshlow) {
+				u64 tmp = IIO_EVENT_CODE(IIO_VOLTAGE, 1, 0,
+							 IIO_EV_DIR_FALLING,
+							 IIO_EV_TYPE_THRESH,
+							 0, 0, 0);
+				iio_push_event(indio_dev, tmp,
+					       iio_get_time_ns(indio_dev));
+			}
+		} else {
+			if (val >= st->aux_threshhigh) {
+				u64 tmp = IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
+							IIO_EV_TYPE_THRESH,
+							IIO_EV_DIR_RISING);
+				iio_push_event(indio_dev, tmp,
+					       iio_get_time_ns(indio_dev));
+			} else if (val <= st->aux_threshlow) {
+				u64 tmp = IIO_UNMOD_EVENT_CODE(IIO_TEMP, 0,
+							IIO_EV_TYPE_THRESH,
+							IIO_EV_DIR_FALLING);
+				iio_push_event(indio_dev, tmp,
+					       iio_get_time_ns(indio_dev));
+			}
+		}
+	}
+
+out:
+	kfree(channels);
+
+	return IRQ_HANDLED;
+}
+
+static void ad7280_update_delay(struct ad7280_state *st)
+{
+	/*
+	 * Total Conversion Time = ((tACQ + tCONV) *
+	 *			   (Number of Conversions per Part)) −
+	 *			   tACQ + ((N - 1) * tDELAY)
+	 *
+	 * Readback Delay = Total Conversion Time + tWAIT
+	 */
+
+	st->readback_delay_us =
+		((ad7280a_t_acq_ns[st->acquisition_time & 0x3] + 720) *
+			(AD7280A_NUM_CH * ad7280a_n_avg[st->oversampling_ratio & 0x3])) -
+		ad7280a_t_acq_ns[st->acquisition_time & 0x3] + st->slave_num * 250;
+
+	/* Convert to usecs */
+	st->readback_delay_us = DIV_ROUND_UP(st->readback_delay_us, 1000);
+	st->readback_delay_us += 5; /* Add tWAIT */
+}
+
+static int ad7280_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long m)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (m) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&st->lock);
+		if (chan->address == AD7280A_ALL_CELLS)
+			ret = ad7280_read_all_channels(st, st->scan_cnt, NULL);
+		else
+			ret = ad7280_read_channel(st, chan->address >> 8,
+						  chan->address & 0xFF);
+		mutex_unlock(&st->lock);
+
+		if (ret < 0)
+			return ret;
+
+		*val = ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		if ((chan->address & 0xFF) <= AD7280A_CELL_VOLTAGE_6_REG)
+			*val = 4000;
+		else
+			*val = 5000;
+
+		*val2 = AD7280A_BITS;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*val = ad7280a_n_avg[st->oversampling_ratio];
+		return IIO_VAL_INT;
+	}
+	return -EINVAL;
+}
+
+static int ad7280_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
+{
+	struct ad7280_state *st = iio_priv(indio_dev);
+	int i;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		if (val2 != 0)
+			return -EINVAL;
+		for (i = 0; i < ARRAY_SIZE(ad7280a_n_avg); i++) {
+			if (val == ad7280a_n_avg[i]) {
+				st->oversampling_ratio = i;
+				ad7280_update_delay(st);
+				return 0;
+			}
+		}
+		return -EINVAL;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ad7280_info = {
+	.read_raw = ad7280_read_raw,
+	.write_raw = ad7280_write_raw,
+	.read_event_value = &ad7280a_read_thresh,
+	.write_event_value = &ad7280a_write_thresh,
+};
+
+static const struct iio_info ad7280_info_no_irq = {
+	.read_raw = ad7280_read_raw,
+	.write_raw = ad7280_write_raw,
+};
+
+static int ad7280_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct ad7280_state *st;
+	int ret;
+	struct iio_dev *indio_dev;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	spi_set_drvdata(spi, indio_dev);
+	st->spi = spi;
+	mutex_init(&st->lock);
+
+	st->thermistor_term_en =
+		device_property_read_bool(dev, "adi,thermistor-termination");
+
+	if (device_property_present(dev, "adi,acquisition-time-ns")) {
+		u32 val;
+
+		ret = device_property_read_u32(dev, "adi,acquisition-time-ns", &val);
+		if (ret)
+			return ret;
+
+		switch (val) {
+		case 400:
+			st->acquisition_time = AD7280A_CTRL_LB_ACQ_TIME_400ns;
+			break;
+		case 800:
+			st->acquisition_time = AD7280A_CTRL_LB_ACQ_TIME_800ns;
+			break;
+		case 1200:
+			st->acquisition_time = AD7280A_CTRL_LB_ACQ_TIME_1200ns;
+			break;
+		case 1600:
+			st->acquisition_time = AD7280A_CTRL_LB_ACQ_TIME_1600ns;
+			break;
+		default:
+			dev_err(dev, "Firmware provided acquisition time is invalid\n");
+			return -EINVAL;
+		}
+	} else {
+		st->acquisition_time = AD7280A_CTRL_LB_ACQ_TIME_400ns;
+	}
+
+	/* Alert masks are intended for when particular inputs are not wired up */
+	if (device_property_present(dev, "adi,voltage-alert-last-chan")) {
+		u32 val;
+
+		ret = device_property_read_u32(dev, "adi,voltage-alert-last-chan", &val);
+		if (ret)
+			return ret;
+
+		switch (val) {
+		case 3:
+			st->chain_last_alert_ignore |= AD7280A_ALERT_REMOVE_VIN4_VIN5;
+			break;
+		case 4:
+			st->chain_last_alert_ignore |= AD7280A_ALERT_REMOVE_VIN5;
+			break;
+		case 5:
+			break;
+		default:
+			dev_err(dev,
+				"Firmware provided last voltage alert channel invalid\n");
+			break;
+		}
+	}
+	crc8_populate_msb(st->crc_tab, POLYNOM);
+
+	st->spi->max_speed_hz = AD7280A_MAX_SPI_CLK_HZ;
+	st->spi->mode = SPI_MODE_1;
+	spi_setup(st->spi);
+
+	st->ctrl_lb = FIELD_PREP(AD7280A_CTRL_LB_ACQ_TIME_MSK, st->acquisition_time) |
+		FIELD_PREP(AD7280A_CTRL_LB_THERMISTOR_MSK, st->thermistor_term_en);
+	st->oversampling_ratio = 0; /* No oversampling */
+
+	ret = ad7280_chain_setup(st);
+	if (ret < 0)
+		return ret;
+
+	st->slave_num = ret;
+	st->scan_cnt = (st->slave_num + 1) * AD7280A_NUM_CH;
+	st->cell_threshhigh = 0xFF;
+	st->aux_threshhigh = 0xFF;
+
+	ret = devm_add_action_or_reset(dev, ad7280_sw_power_down, st);
+	if (ret)
+		return ret;
+
+	ad7280_update_delay(st);
+
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = ad7280_channel_init(st, spi->irq > 0);
+	if (ret < 0)
+		return ret;
+
+	indio_dev->num_channels = ret;
+	indio_dev->channels = st->channels;
+	if (spi->irq > 0) {
+		ret = ad7280_write(st, AD7280A_DEVADDR_MASTER,
+				   AD7280A_ALERT_REG, 1,
+				   AD7280A_ALERT_RELAY_SIG_CHAIN_DOWN);
+		if (ret)
+			return ret;
+
+		ret = ad7280_write(st, ad7280a_devaddr(st->slave_num),
+				   AD7280A_ALERT_REG, 0,
+				   AD7280A_ALERT_GEN_STATIC_HIGH |
+				   FIELD_PREP(AD7280A_ALERT_REMOVE_MSK,
+					      st->chain_last_alert_ignore));
+		if (ret)
+			return ret;
+
+		ret = devm_request_threaded_irq(dev, spi->irq,
+						NULL,
+						ad7280_event_handler,
+						IRQF_TRIGGER_FALLING |
+						IRQF_ONESHOT,
+						indio_dev->name,
+						indio_dev);
+		if (ret)
+			return ret;
+
+		indio_dev->info = &ad7280_info;
+	} else {
+		indio_dev->info = &ad7280_info_no_irq;
+	}
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct spi_device_id ad7280_id[] = {
+	{"ad7280a", 0},
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ad7280_id);
+
+static struct spi_driver ad7280_driver = {
+	.driver = {
+		.name	= "ad7280",
+	},
+	.probe		= ad7280_probe,
+	.id_table	= ad7280_id,
+};
+module_spi_driver(ad7280_driver);
+
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD7280A");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/ad7291.c b/drivers/iio/adc/ad7291.c
index b2b137fed246..e9129dac762f 100644
--- a/drivers/iio/adc/ad7291.c
+++ b/drivers/iio/adc/ad7291.c
@@ -20,8 +20,6 @@
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
 
-#include <linux/platform_data/ad7291.h>
-
 /*
  * Simplified handling
  *
@@ -462,10 +460,14 @@ static const struct iio_info ad7291_info = {
 	.write_event_value = &ad7291_write_event_value,
 };
 
+static void ad7291_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7291_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
-	struct ad7291_platform_data *pdata = client->dev.platform_data;
 	struct ad7291_chip_info *chip;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -475,19 +477,7 @@ static int ad7291_probe(struct i2c_client *client,
 		return -ENOMEM;
 	chip = iio_priv(indio_dev);
 
-	if (pdata && pdata->use_external_ref) {
-		chip->reg = devm_regulator_get(&client->dev, "vref");
-		if (IS_ERR(chip->reg))
-			return PTR_ERR(chip->reg);
-
-		ret = regulator_enable(chip->reg);
-		if (ret)
-			return ret;
-	}
-
 	mutex_init(&chip->state_lock);
-	/* this is only used for device removal purposes */
-	i2c_set_clientdata(client, indio_dev);
 
 	chip->client = client;
 
@@ -495,71 +485,54 @@ static int ad7291_probe(struct i2c_client *client,
 			AD7291_T_SENSE_MASK | /* Tsense always enabled */
 			AD7291_ALERT_POLARITY; /* set irq polarity low level */
 
-	if (pdata && pdata->use_external_ref)
+	chip->reg = devm_regulator_get_optional(&client->dev, "vref");
+	if (IS_ERR(chip->reg)) {
+		if (PTR_ERR(chip->reg) != -ENODEV)
+			return PTR_ERR(chip->reg);
+
+		chip->reg = NULL;
+	}
+
+	if (chip->reg) {
+		ret = regulator_enable(chip->reg);
+		if (ret)
+			return ret;
+
+		ret = devm_add_action_or_reset(&client->dev, ad7291_reg_disable,
+					       chip->reg);
+		if (ret)
+			return ret;
+
 		chip->command |= AD7291_EXT_REF;
+	}
 
 	indio_dev->name = id->name;
 	indio_dev->channels = ad7291_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ad7291_channels);
 
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->info = &ad7291_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = ad7291_i2c_write(chip, AD7291_COMMAND, AD7291_RESET);
-	if (ret) {
-		ret = -EIO;
-		goto error_disable_reg;
-	}
+	if (ret)
+		return -EIO;
 
 	ret = ad7291_i2c_write(chip, AD7291_COMMAND, chip->command);
-	if (ret) {
-		ret = -EIO;
-		goto error_disable_reg;
-	}
+	if (ret)
+		return -EIO;
 
 	if (client->irq > 0) {
-		ret = request_threaded_irq(client->irq,
-					   NULL,
-					   &ad7291_event_handler,
-					   IRQF_TRIGGER_LOW | IRQF_ONESHOT,
-					   id->name,
-					   indio_dev);
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL,
+						&ad7291_event_handler,
+						IRQF_TRIGGER_LOW | IRQF_ONESHOT,
+						id->name,
+						indio_dev);
 		if (ret)
-			goto error_disable_reg;
+			return ret;
 	}
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_unreg_irq;
-
-	return 0;
-
-error_unreg_irq:
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-error_disable_reg:
-	if (chip->reg)
-		regulator_disable(chip->reg);
-
-	return ret;
-}
-
-static int ad7291_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct ad7291_chip_info *chip = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-
-	if (chip->reg)
-		regulator_disable(chip->reg);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id ad7291_id[] = {
@@ -569,12 +542,18 @@ static const struct i2c_device_id ad7291_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, ad7291_id);
 
+static const struct of_device_id ad7291_of_match[] = {
+	{ .compatible = "adi,ad7291" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad7291_of_match);
+
 static struct i2c_driver ad7291_driver = {
 	.driver = {
 		.name = KBUILD_MODNAME,
+		.of_match_table = ad7291_of_match,
 	},
 	.probe = ad7291_probe,
-	.remove = ad7291_remove,
 	.id_table = ad7291_id,
 };
 module_i2c_driver(ad7291_driver);
diff --git a/drivers/iio/adc/ad7292.c b/drivers/iio/adc/ad7292.c
index a6798f7dfdb8..a2f9fda25ff3 100644
--- a/drivers/iio/adc/ad7292.c
+++ b/drivers/iio/adc/ad7292.c
@@ -80,7 +80,7 @@ struct ad7292_state {
 	struct regulator *reg;
 	unsigned short vref_mv;
 
-	__be16 d16 ____cacheline_aligned;
+	__be16 d16 __aligned(IIO_DMA_MINALIGN);
 	u8 d8[2];
 };
 
@@ -122,7 +122,10 @@ static int ad7292_single_conversion(struct ad7292_state *st,
 		{
 			.tx_buf = &st->d8,
 			.len = 4,
-			.delay_usecs = 6,
+			.delay = {
+				.value = 6,
+				.unit = SPI_DELAY_UNIT_USECS
+			},
 		}, {
 			.rx_buf = &st->d16,
 			.len = 2,
@@ -257,7 +260,7 @@ static int ad7292_probe(struct spi_device *spi)
 	struct ad7292_state *st;
 	struct iio_dev *indio_dev;
 	struct device_node *child;
-	bool diff_channels = 0;
+	bool diff_channels = false;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
@@ -273,8 +276,6 @@ static int ad7292_probe(struct spi_device *spi)
 		return -EINVAL;
 	}
 
-	spi_set_drvdata(spi, indio_dev);
-
 	st->reg = devm_regulator_get_optional(&spi->dev, "vref");
 	if (!IS_ERR(st->reg)) {
 		ret = regulator_enable(st->reg);
@@ -286,10 +287,8 @@ static int ad7292_probe(struct spi_device *spi)
 
 		ret = devm_add_action_or_reset(&spi->dev,
 					       ad7292_regulator_disable, st);
-		if (ret) {
-			regulator_disable(st->reg);
+		if (ret)
 			return ret;
-		}
 
 		ret = regulator_get_voltage(st->reg);
 		if (ret < 0)
@@ -301,15 +300,16 @@ static int ad7292_probe(struct spi_device *spi)
 		st->vref_mv = 1250;
 	}
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &ad7292_info;
 
 	for_each_available_child_of_node(spi->dev.of_node, child) {
 		diff_channels = of_property_read_bool(child, "diff-channels");
-		if (diff_channels)
+		if (diff_channels) {
+			of_node_put(child);
 			break;
+		}
 	}
 
 	if (diff_channels) {
diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
index dc8d8c5f6ad3..c0430f71f592 100644
--- a/drivers/iio/adc/ad7298.c
+++ b/drivers/iio/adc/ad7298.c
@@ -13,6 +13,7 @@
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/interrupt.h>
 #include <linux/bitops.h>
@@ -23,8 +24,6 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 
-#include <linux/platform_data/ad7298.h>
-
 #define AD7298_WRITE	BIT(15) /* write to the control register */
 #define AD7298_REPEAT	BIT(14) /* repeated conversion enable */
 #define AD7298_CH(x)	BIT(13 - (x)) /* channel select */
@@ -50,7 +49,7 @@ struct ad7298_state {
 	 * DMA (thus cache coherency maintenance) requires the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	__be16				rx_buf[12] ____cacheline_aligned;
+	__be16				rx_buf[12] __aligned(IIO_DMA_MINALIGN);
 	__be16				tx_buf[2];
 };
 
@@ -98,9 +97,9 @@ static const struct iio_chan_spec ad7298_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(8),
 };
 
-/**
+/*
  * ad7298_update_scan_mode() setup the spi transfer buffer for the new scan mask
- **/
+ */
 static int ad7298_update_scan_mode(struct iio_dev *indio_dev,
 	const unsigned long *active_scan_mask)
 {
@@ -144,12 +143,6 @@ static int ad7298_update_scan_mode(struct iio_dev *indio_dev,
 	return 0;
 }
 
-/**
- * ad7298_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
 static irqreturn_t ad7298_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
@@ -216,7 +209,7 @@ static int ad7298_get_ref_voltage(struct ad7298_state *st)
 {
 	int vref;
 
-	if (st->ext_ref) {
+	if (st->reg) {
 		vref = regulator_get_voltage(st->reg);
 		if (vref < 0)
 			return vref;
@@ -281,9 +274,15 @@ static const struct iio_info ad7298_info = {
 	.update_scan_mode = ad7298_update_scan_mode,
 };
 
+static void ad7298_reg_disable(void *data)
+{
+	struct regulator *reg = data;
+
+	regulator_disable(reg);
+}
+
 static int ad7298_probe(struct spi_device *spi)
 {
-	struct ad7298_platform_data *pdata = spi->dev.platform_data;
 	struct ad7298_state *st;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -294,26 +293,31 @@ static int ad7298_probe(struct spi_device *spi)
 
 	st = iio_priv(indio_dev);
 
-	if (pdata && pdata->ext_ref)
+	st->reg = devm_regulator_get_optional(&spi->dev, "vref");
+	if (!IS_ERR(st->reg)) {
 		st->ext_ref = AD7298_EXTREF;
+	} else {
+		ret = PTR_ERR(st->reg);
+		if (ret != -ENODEV)
+			return ret;
 
-	if (st->ext_ref) {
-		st->reg = devm_regulator_get(&spi->dev, "vref");
-		if (IS_ERR(st->reg))
-			return PTR_ERR(st->reg);
+		st->reg = NULL;
+	}
 
+	if (st->reg) {
 		ret = regulator_enable(st->reg);
 		if (ret)
 			return ret;
-	}
 
-	spi_set_drvdata(spi, indio_dev);
+		ret = devm_add_action_or_reset(&spi->dev, ad7298_reg_disable,
+					       st->reg);
+		if (ret)
+			return ret;
+	}
 
 	st->spi = spi;
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ad7298_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ad7298_channels);
@@ -335,38 +339,19 @@ static int ad7298_probe(struct spi_device *spi)
 	spi_message_add_tail(&st->scan_single_xfer[1], &st->scan_single_msg);
 	spi_message_add_tail(&st->scan_single_xfer[2], &st->scan_single_msg);
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
 			&ad7298_trigger_handler, NULL);
 	if (ret)
-		goto error_disable_reg;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_cleanup_ring;
-
-	return 0;
-
-error_cleanup_ring:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	if (st->ext_ref)
-		regulator_disable(st->reg);
+		return ret;
 
-	return ret;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
-static int ad7298_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7298_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (st->ext_ref)
-		regulator_disable(st->reg);
-
-	return 0;
-}
+static const struct acpi_device_id ad7298_acpi_ids[] = {
+	{ "INT3494", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, ad7298_acpi_ids);
 
 static const struct spi_device_id ad7298_id[] = {
 	{"ad7298", 0},
@@ -377,9 +362,9 @@ MODULE_DEVICE_TABLE(spi, ad7298_id);
 static struct spi_driver ad7298_driver = {
 	.driver = {
 		.name	= "ad7298",
+		.acpi_match_table = ad7298_acpi_ids,
 	},
 	.probe		= ad7298_probe,
-	.remove		= ad7298_remove,
 	.id_table	= ad7298_id,
 };
 module_spi_driver(ad7298_driver);
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index 76747488044b..94776f696290 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -12,9 +12,11 @@
 #include <linux/sysfs.h>
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
+#include <linux/gpio/consumer.h>
 #include <linux/err.h>
 #include <linux/module.h>
 #include <linux/bitops.h>
+#include <linux/delay.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -27,33 +29,41 @@ struct ad7476_state;
 struct ad7476_chip_info {
 	unsigned int			int_vref_uv;
 	struct iio_chan_spec		channel[2];
+	/* channels used when convst gpio is defined */
+	struct iio_chan_spec		convst_channel[2];
 	void (*reset)(struct ad7476_state *);
+	bool				has_vref;
+	bool				has_vdrive;
 };
 
 struct ad7476_state {
 	struct spi_device		*spi;
 	const struct ad7476_chip_info	*chip_info;
-	struct regulator		*reg;
+	struct regulator		*ref_reg;
+	struct gpio_desc		*convst_gpio;
 	struct spi_transfer		xfer;
 	struct spi_message		msg;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * Make the buffer large enough for one 16 bit sample and one 64 bit
 	 * aligned 64 bit timestamp.
 	 */
-	unsigned char data[ALIGN(2, sizeof(s64)) + sizeof(s64)]
-			____cacheline_aligned;
+	unsigned char data[ALIGN(2, sizeof(s64)) + sizeof(s64)] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad7476_supported_device_ids {
+	ID_AD7091,
 	ID_AD7091R,
+	ID_AD7273,
+	ID_AD7274,
 	ID_AD7276,
 	ID_AD7277,
 	ID_AD7278,
 	ID_AD7466,
 	ID_AD7467,
 	ID_AD7468,
+	ID_AD7475,
 	ID_AD7495,
 	ID_AD7940,
 	ID_ADC081S,
@@ -62,8 +72,20 @@ enum ad7476_supported_device_ids {
 	ID_ADS7866,
 	ID_ADS7867,
 	ID_ADS7868,
+	ID_LTC2314_14,
 };
 
+static void ad7091_convst(struct ad7476_state *st)
+{
+	if (!st->convst_gpio)
+		return;
+
+	gpiod_set_value(st->convst_gpio, 0);
+	udelay(1); /* CONVST pulse width: 10 ns min */
+	gpiod_set_value(st->convst_gpio, 1);
+	udelay(1); /* Conversion time: 650 ns max */
+}
+
 static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
 {
 	struct iio_poll_func *pf = p;
@@ -71,6 +93,8 @@ static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
 	struct ad7476_state *st = iio_priv(indio_dev);
 	int b_sent;
 
+	ad7091_convst(st);
+
 	b_sent = spi_sync(st->spi, &st->msg);
 	if (b_sent < 0)
 		goto done;
@@ -93,6 +117,8 @@ static int ad7476_scan_direct(struct ad7476_state *st)
 {
 	int ret;
 
+	ad7091_convst(st);
+
 	ret = spi_sync(st->spi, &st->msg);
 	if (ret)
 		return ret;
@@ -124,8 +150,8 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
 			GENMASK(st->chip_info->channel[0].scan_type.realbits - 1, 0);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		if (!st->chip_info->int_vref_uv) {
-			scale_uv = regulator_get_voltage(st->reg);
+		if (st->ref_reg) {
+			scale_uv = regulator_get_voltage(st->ref_reg);
 			if (scale_uv < 0)
 				return scale_uv;
 		} else {
@@ -160,15 +186,38 @@ static int ad7476_read_raw(struct iio_dev *indio_dev,
 #define AD7940_CHAN(bits) _AD7476_CHAN((bits), 15 - (bits), \
 		BIT(IIO_CHAN_INFO_RAW))
 #define AD7091R_CHAN(bits) _AD7476_CHAN((bits), 16 - (bits), 0)
+#define AD7091R_CONVST_CHAN(bits) _AD7476_CHAN((bits), 16 - (bits), \
+		BIT(IIO_CHAN_INFO_RAW))
 #define ADS786X_CHAN(bits) _AD7476_CHAN((bits), 12 - (bits), \
 		BIT(IIO_CHAN_INFO_RAW))
 
 static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
+	[ID_AD7091] = {
+		.channel[0] = AD7091R_CHAN(12),
+		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.convst_channel[0] = AD7091R_CONVST_CHAN(12),
+		.convst_channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.reset = ad7091_reset,
+	},
 	[ID_AD7091R] = {
 		.channel[0] = AD7091R_CHAN(12),
 		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.convst_channel[0] = AD7091R_CONVST_CHAN(12),
+		.convst_channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.int_vref_uv = 2500000,
+		.has_vref = true,
 		.reset = ad7091_reset,
 	},
+	[ID_AD7273] = {
+		.channel[0] = AD7940_CHAN(10),
+		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.has_vref = true,
+	},
+	[ID_AD7274] = {
+		.channel[0] = AD7940_CHAN(12),
+		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.has_vref = true,
+	},
 	[ID_AD7276] = {
 		.channel[0] = AD7940_CHAN(12),
 		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
@@ -193,10 +242,17 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
 		.channel[0] = AD7476_CHAN(8),
 		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
 	},
+	[ID_AD7475] = {
+		.channel[0] = AD7476_CHAN(12),
+		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.has_vref = true,
+		.has_vdrive = true,
+	},
 	[ID_AD7495] = {
 		.channel[0] = AD7476_CHAN(12),
 		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
 		.int_vref_uv = 2500000,
+		.has_vdrive = true,
 	},
 	[ID_AD7940] = {
 		.channel[0] = AD7940_CHAN(14),
@@ -226,16 +282,29 @@ static const struct ad7476_chip_info ad7476_chip_info_tbl[] = {
 		.channel[0] = ADS786X_CHAN(8),
 		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
 	},
+	[ID_LTC2314_14] = {
+		.channel[0] = AD7940_CHAN(14),
+		.channel[1] = IIO_CHAN_SOFT_TIMESTAMP(1),
+		.has_vref = true,
+	},
 };
 
 static const struct iio_info ad7476_info = {
 	.read_raw = &ad7476_read_raw,
 };
 
+static void ad7476_reg_disable(void *data)
+{
+	struct regulator *reg = data;
+
+	regulator_disable(reg);
+}
+
 static int ad7476_probe(struct spi_device *spi)
 {
 	struct ad7476_state *st;
 	struct iio_dev *indio_dev;
+	struct regulator *reg;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
@@ -246,26 +315,89 @@ static int ad7476_probe(struct spi_device *spi)
 	st->chip_info =
 		&ad7476_chip_info_tbl[spi_get_device_id(spi)->driver_data];
 
-	st->reg = devm_regulator_get(&spi->dev, "vcc");
-	if (IS_ERR(st->reg))
-		return PTR_ERR(st->reg);
+	reg = devm_regulator_get(&spi->dev, "vcc");
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
 
-	ret = regulator_enable(st->reg);
+	ret = regulator_enable(reg);
 	if (ret)
 		return ret;
 
-	spi_set_drvdata(spi, indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, ad7476_reg_disable, reg);
+	if (ret)
+		return ret;
+
+	/* Either vcc or vref (below) as appropriate */
+	if (!st->chip_info->int_vref_uv)
+		st->ref_reg = reg;
+
+	if (st->chip_info->has_vref) {
+
+		/* If a device has an internal reference vref is optional */
+		if (st->chip_info->int_vref_uv) {
+			reg = devm_regulator_get_optional(&spi->dev, "vref");
+			if (IS_ERR(reg) && (PTR_ERR(reg) != -ENODEV))
+				return PTR_ERR(reg);
+		} else {
+			reg = devm_regulator_get(&spi->dev, "vref");
+			if (IS_ERR(reg))
+				return PTR_ERR(reg);
+		}
+
+		if (!IS_ERR(reg)) {
+			ret = regulator_enable(reg);
+			if (ret)
+				return ret;
+
+			ret = devm_add_action_or_reset(&spi->dev,
+						       ad7476_reg_disable,
+						       reg);
+			if (ret)
+				return ret;
+			st->ref_reg = reg;
+		} else {
+			/*
+			 * Can only get here if device supports both internal
+			 * and external reference, but the regulator connected
+			 * to the external reference is not connected.
+			 * Set the reference regulator pointer to NULL to
+			 * indicate this.
+			 */
+			st->ref_reg = NULL;
+		}
+	}
+
+	if (st->chip_info->has_vdrive) {
+		reg = devm_regulator_get(&spi->dev, "vdrive");
+		if (IS_ERR(reg))
+			return PTR_ERR(reg);
+
+		ret = regulator_enable(reg);
+		if (ret)
+			return ret;
+
+		ret = devm_add_action_or_reset(&spi->dev, ad7476_reg_disable,
+					       reg);
+		if (ret)
+			return ret;
+	}
+
+	st->convst_gpio = devm_gpiod_get_optional(&spi->dev,
+						  "adi,conversion-start",
+						  GPIOD_OUT_LOW);
+	if (IS_ERR(st->convst_gpio))
+		return PTR_ERR(st->convst_gpio);
 
 	st->spi = spi;
 
-	/* Establish that the iio_dev is a child of the spi device */
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channel;
 	indio_dev->num_channels = 2;
 	indio_dev->info = &ad7476_info;
+
+	if (st->convst_gpio)
+		indio_dev->channels = st->chip_info->convst_channel;
 	/* Setup default message */
 
 	st->xfer.rx_buf = &st->data;
@@ -274,50 +406,29 @@ static int ad7476_probe(struct spi_device *spi)
 	spi_message_init(&st->msg);
 	spi_message_add_tail(&st->xfer, &st->msg);
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-			&ad7476_trigger_handler, NULL);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
+					      &ad7476_trigger_handler, NULL);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
 	if (st->chip_info->reset)
 		st->chip_info->reset(st);
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_ring_unregister;
-	return 0;
-
-error_ring_unregister:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad7476_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7476_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	regulator_disable(st->reg);
-
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7476_id[] = {
+	{"ad7091", ID_AD7091},
 	{"ad7091r", ID_AD7091R},
-	{"ad7273", ID_AD7277},
-	{"ad7274", ID_AD7276},
+	{"ad7273", ID_AD7273},
+	{"ad7274", ID_AD7274},
 	{"ad7276", ID_AD7276},
 	{"ad7277", ID_AD7277},
 	{"ad7278", ID_AD7278},
 	{"ad7466", ID_AD7466},
 	{"ad7467", ID_AD7467},
 	{"ad7468", ID_AD7468},
-	{"ad7475", ID_AD7466},
+	{"ad7475", ID_AD7475},
 	{"ad7476", ID_AD7466},
 	{"ad7476a", ID_AD7466},
 	{"ad7477", ID_AD7467},
@@ -334,6 +445,7 @@ static const struct spi_device_id ad7476_id[] = {
 	{"ads7866", ID_ADS7866},
 	{"ads7867", ID_ADS7867},
 	{"ads7868", ID_ADS7868},
+	{"ltc2314-14", ID_LTC2314_14},
 	{}
 };
 MODULE_DEVICE_TABLE(spi, ad7476_id);
@@ -343,7 +455,6 @@ static struct spi_driver ad7476_driver = {
 		.name	= "ad7476",
 	},
 	.probe		= ad7476_probe,
-	.remove		= ad7476_remove,
 	.id_table	= ad7476_id,
 };
 module_spi_driver(ad7476_driver);
diff --git a/drivers/iio/adc/ad7606.c b/drivers/iio/adc/ad7606.c
index e4683a68522a..ba24f99523e0 100644
--- a/drivers/iio/adc/ad7606.c
+++ b/drivers/iio/adc/ad7606.c
@@ -12,6 +12,7 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
@@ -499,7 +500,6 @@ static int ad7606_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct ad7606_state *st = iio_priv(indio_dev);
 
-	iio_triggered_buffer_postenable(indio_dev);
 	gpiod_set_value(st->gpio_convst, 1);
 
 	return 0;
@@ -511,7 +511,7 @@ static int ad7606_buffer_predisable(struct iio_dev *indio_dev)
 
 	gpiod_set_value(st->gpio_convst, 0);
 
-	return iio_triggered_buffer_predisable(indio_dev);
+	return 0;
 }
 
 static const struct iio_buffer_setup_ops ad7606_buffer_ops = {
@@ -614,7 +614,6 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = dev;
 	if (st->gpio_os) {
 		if (st->gpio_range)
 			indio_dev->info = &ad7606_info_os_and_range;
@@ -665,12 +664,12 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 	}
 
 	st->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
-					  indio_dev->name, indio_dev->id);
+					  indio_dev->name,
+					  iio_device_id(indio_dev));
 	if (!st->trig)
 		return -ENOMEM;
 
 	st->trig->ops = &ad7606_trigger_ops;
-	st->trig->dev.parent = dev;
 	iio_trigger_set_drvdata(st->trig, indio_dev);
 	ret = devm_iio_trigger_register(dev, st->trig);
 	if (ret)
@@ -695,7 +694,7 @@ int ad7606_probe(struct device *dev, int irq, void __iomem *base_address,
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(ad7606_probe);
+EXPORT_SYMBOL_NS_GPL(ad7606_probe, IIO_AD7606);
 
 #ifdef CONFIG_PM_SLEEP
 
@@ -727,7 +726,7 @@ static int ad7606_resume(struct device *dev)
 }
 
 SIMPLE_DEV_PM_OPS(ad7606_pm_ops, ad7606_suspend, ad7606_resume);
-EXPORT_SYMBOL_GPL(ad7606_pm_ops);
+EXPORT_SYMBOL_NS_GPL(ad7606_pm_ops, IIO_AD7606);
 
 #endif
 
diff --git a/drivers/iio/adc/ad7606.h b/drivers/iio/adc/ad7606.h
index 9350ef1f63b5..2dc4f599f9df 100644
--- a/drivers/iio/adc/ad7606.h
+++ b/drivers/iio/adc/ad7606.h
@@ -62,7 +62,7 @@ struct ad7606_chip_info {
  * struct ad7606_state - driver instance specific data
  * @dev		pointer to kernel device
  * @chip_info		entry in the table of chips that describes this device
- * @reg		regulator info for the the power supply of the device
+ * @reg		regulator info for the power supply of the device
  * @bops		bus operations (SPI or parallel)
  * @range		voltage range selection, selects which scale to apply
  * @oversampling	oversampling selection
@@ -116,11 +116,11 @@ struct ad7606_state {
 	struct completion		completion;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * 16 * 16-bit samples + 64-bit timestamp
 	 */
-	unsigned short			data[20] ____cacheline_aligned;
+	unsigned short			data[20] __aligned(IIO_DMA_MINALIGN);
 	__be16				d16[2];
 };
 
diff --git a/drivers/iio/adc/ad7606_par.c b/drivers/iio/adc/ad7606_par.c
index f732b3ac7878..b912b4df9b56 100644
--- a/drivers/iio/adc/ad7606_par.c
+++ b/drivers/iio/adc/ad7606_par.c
@@ -5,6 +5,7 @@
  * Copyright 2011 Analog Devices Inc.
  */
 
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/types.h>
@@ -101,3 +102,4 @@ module_platform_driver(ad7606_driver);
 MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD7606);
diff --git a/drivers/iio/adc/ad7606_spi.c b/drivers/iio/adc/ad7606_spi.c
index 29945ad07dca..263a778bcf25 100644
--- a/drivers/iio/adc/ad7606_spi.c
+++ b/drivers/iio/adc/ad7606_spi.c
@@ -362,3 +362,4 @@ module_spi_driver(ad7606_driver);
 MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7606 ADC");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD7606);
diff --git a/drivers/iio/adc/ad7766.c b/drivers/iio/adc/ad7766.c
index bc388ea41754..3079a0872947 100644
--- a/drivers/iio/adc/ad7766.c
+++ b/drivers/iio/adc/ad7766.c
@@ -45,13 +45,12 @@ struct ad7766 {
 	struct spi_message msg;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * Make the buffer large enough for one 24 bit sample and one 64 bit
 	 * aligned 64 bit timestamp.
 	 */
-	unsigned char data[ALIGN(3, sizeof(s64)) + sizeof(s64)]
-			____cacheline_aligned;
+	unsigned char data[ALIGN(3, sizeof(s64)) + sizeof(s64)]	__aligned(IIO_DMA_MINALIGN);
 };
 
 /*
@@ -178,8 +177,6 @@ static const struct ad7766_chip_info ad7766_chip_info[] = {
 
 static const struct iio_buffer_setup_ops ad7766_buffer_setup_ops = {
 	.preenable = &ad7766_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
 	.postdisable = &ad7766_postdisable,
 };
 
@@ -242,7 +239,6 @@ static int ad7766_probe(struct spi_device *spi)
 	if (IS_ERR(ad7766->pd_gpio))
 		return PTR_ERR(ad7766->pd_gpio);
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ad7766_channels;
@@ -251,34 +247,31 @@ static int ad7766_probe(struct spi_device *spi)
 
 	if (spi->irq > 0) {
 		ad7766->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",
-			indio_dev->name, indio_dev->id);
+						      indio_dev->name,
+						      iio_device_id(indio_dev));
 		if (!ad7766->trig)
 			return -ENOMEM;
 
 		ad7766->trig->ops = &ad7766_trigger_ops;
-		ad7766->trig->dev.parent = &spi->dev;
 		iio_trigger_set_drvdata(ad7766->trig, ad7766);
 
-		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
-			IRQF_TRIGGER_FALLING, dev_name(&spi->dev),
-			ad7766->trig);
-		if (ret < 0)
-			return ret;
-
 		/*
 		 * The device generates interrupts as long as it is powered up.
 		 * Some platforms might not allow the option to power it down so
-		 * disable the interrupt to avoid extra load on the system
+		 * don't enable the interrupt to avoid extra load on the system
 		 */
-		disable_irq(spi->irq);
+		ret = devm_request_irq(&spi->dev, spi->irq, ad7766_irq,
+				       IRQF_TRIGGER_FALLING | IRQF_NO_AUTOEN,
+				       dev_name(&spi->dev),
+				       ad7766->trig);
+		if (ret < 0)
+			return ret;
 
 		ret = devm_iio_trigger_register(&spi->dev, ad7766->trig);
 		if (ret)
 			return ret;
 	}
 
-	spi_set_drvdata(spi, indio_dev);
-
 	ad7766->spi = spi;
 
 	/* First byte always 0 */
@@ -294,10 +287,7 @@ static int ad7766_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = devm_iio_device_register(&spi->dev, indio_dev);
-	if (ret)
-		return ret;
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7766_id[] = {
diff --git a/drivers/iio/adc/ad7768-1.c b/drivers/iio/adc/ad7768-1.c
index 0d132708c429..70a25949142c 100644
--- a/drivers/iio/adc/ad7768-1.c
+++ b/drivers/iio/adc/ad7768-1.c
@@ -161,14 +161,19 @@ struct ad7768_state {
 	struct completion completion;
 	struct iio_trigger *trig;
 	struct gpio_desc *gpio_sync_in;
+	const char *labels[ARRAY_SIZE(ad7768_channels)];
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
+		struct {
+			__be32 chan;
+			s64 timestamp;
+		} scan;
 		__be32 d32;
 		u8 d8[2];
-	} data ____cacheline_aligned;
+	} data __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad7768_spi_reg_read(struct ad7768_state *st, unsigned int addr,
@@ -407,6 +412,14 @@ static int ad7768_write_raw(struct iio_dev *indio_dev,
 	}
 }
 
+static int ad7768_read_label(struct iio_dev *indio_dev,
+	const struct iio_chan_spec *chan, char *label)
+{
+	struct ad7768_state *st = iio_priv(indio_dev);
+
+	return sprintf(label, "%s\n", st->labels[chan->channel]);
+}
+
 static struct attribute *ad7768_attributes[] = {
 	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 	NULL
@@ -420,6 +433,7 @@ static const struct iio_info ad7768_info = {
 	.attrs = &ad7768_group,
 	.read_raw = &ad7768_read_raw,
 	.write_raw = &ad7768_write_raw,
+	.read_label = ad7768_read_label,
 	.debugfs_reg_access = &ad7768_reg_access,
 };
 
@@ -459,15 +473,15 @@ static irqreturn_t ad7768_trigger_handler(int irq, void *p)
 
 	mutex_lock(&st->lock);
 
-	ret = spi_read(st->spi, &st->data.d32, 3);
+	ret = spi_read(st->spi, &st->data.scan.chan, 3);
 	if (ret < 0)
 		goto err_unlock;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, &st->data.d32,
+	iio_push_to_buffers_with_timestamp(indio_dev, &st->data.scan,
 					   iio_get_time_ns(indio_dev));
 
-	iio_trigger_notify_done(indio_dev->trig);
 err_unlock:
+	iio_trigger_notify_done(indio_dev->trig);
 	mutex_unlock(&st->lock);
 
 	return IRQ_HANDLED;
@@ -490,7 +504,6 @@ static int ad7768_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct ad7768_state *st = iio_priv(indio_dev);
 
-	iio_triggered_buffer_postenable(indio_dev);
 	/*
 	 * Write a 1 to the LSB of the INTERFACE_FORMAT register to enter
 	 * continuous read mode. Subsequent data reads do not require an
@@ -502,17 +515,12 @@ static int ad7768_buffer_postenable(struct iio_dev *indio_dev)
 static int ad7768_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct ad7768_state *st = iio_priv(indio_dev);
-	int ret;
 
 	/*
 	 * To exit continuous read mode, perform a single read of the ADC_DATA
 	 * reg (0x2C), which allows further configuration of the device.
 	 */
-	ret = ad7768_spi_reg_read(st, AD7768_REG_ADC_DATA, 3);
-	if (ret < 0)
-		return ret;
-
-	return iio_triggered_buffer_predisable(indio_dev);
+	return ad7768_spi_reg_read(st, AD7768_REG_ADC_DATA, 3);
 }
 
 static const struct iio_buffer_setup_ops ad7768_buffer_ops = {
@@ -531,11 +539,31 @@ static void ad7768_regulator_disable(void *data)
 	regulator_disable(st->vref);
 }
 
-static void ad7768_clk_disable(void *data)
+static int ad7768_set_channel_label(struct iio_dev *indio_dev,
+						int num_channels)
 {
-	struct ad7768_state *st = data;
+	struct ad7768_state *st = iio_priv(indio_dev);
+	struct device *device = indio_dev->dev.parent;
+	struct fwnode_handle *fwnode;
+	struct fwnode_handle *child;
+	const char *label;
+	int crt_ch = 0;
+
+	fwnode = dev_fwnode(device);
+	fwnode_for_each_child_node(fwnode, child) {
+		if (fwnode_property_read_u32(child, "reg", &crt_ch))
+			continue;
 
-	clk_disable_unprepare(st->mclk);
+		if (crt_ch >= num_channels)
+			continue;
+
+		if (fwnode_property_read_string(child, "label", &label))
+			continue;
+
+		st->labels[crt_ch] = label;
+	}
+
+	return 0;
 }
 
 static int ad7768_probe(struct spi_device *spi)
@@ -565,29 +593,19 @@ static int ad7768_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	st->mclk = devm_clk_get(&spi->dev, "mclk");
+	st->mclk = devm_clk_get_enabled(&spi->dev, "mclk");
 	if (IS_ERR(st->mclk))
 		return PTR_ERR(st->mclk);
 
-	ret = clk_prepare_enable(st->mclk);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, ad7768_clk_disable, st);
-	if (ret)
-		return ret;
-
 	st->mclk_freq = clk_get_rate(st->mclk);
 
-	spi_set_drvdata(spi, indio_dev);
 	mutex_init(&st->lock);
 
 	indio_dev->channels = ad7768_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ad7768_channels);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad7768_info;
-	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_TRIGGERED;
+	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = ad7768_setup(st);
 	if (ret < 0) {
@@ -596,12 +614,12 @@ static int ad7768_probe(struct spi_device *spi)
 	}
 
 	st->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",
-					  indio_dev->name, indio_dev->id);
+					  indio_dev->name,
+					  iio_device_id(indio_dev));
 	if (!st->trig)
 		return -ENOMEM;
 
 	st->trig->ops = &ad7768_trigger_ops;
-	st->trig->dev.parent = &spi->dev;
 	iio_trigger_set_drvdata(st->trig, indio_dev);
 	ret = devm_iio_trigger_register(&spi->dev, st->trig);
 	if (ret)
@@ -611,6 +629,10 @@ static int ad7768_probe(struct spi_device *spi)
 
 	init_completion(&st->completion);
 
+	ret = ad7768_set_channel_label(indio_dev, ARRAY_SIZE(ad7768_channels));
+	if (ret)
+		return ret;
+
 	ret = devm_request_irq(&spi->dev, spi->irq,
 			       &ad7768_interrupt,
 			       IRQF_TRIGGER_RISING | IRQF_ONESHOT,
diff --git a/drivers/iio/adc/ad7780.c b/drivers/iio/adc/ad7780.c
index 291c1a898129..a813fe04787c 100644
--- a/drivers/iio/adc/ad7780.c
+++ b/drivers/iio/adc/ad7780.c
@@ -203,13 +203,32 @@ static const struct ad_sigma_delta_info ad7780_sigma_delta_info = {
 	.set_mode = ad7780_set_mode,
 	.postprocess_sample = ad7780_postprocess_sample,
 	.has_registers = false,
-	.irq_flags = IRQF_TRIGGER_LOW,
+	.irq_flags = IRQF_TRIGGER_FALLING,
 };
 
-#define AD7780_CHANNEL(bits, wordsize) \
-	AD_SD_CHANNEL(1, 0, 0, bits, 32, (wordsize) - (bits))
-#define AD7170_CHANNEL(bits, wordsize) \
-	AD_SD_CHANNEL_NO_SAMP_FREQ(1, 0, 0, bits, 32, (wordsize) - (bits))
+#define _AD7780_CHANNEL(_bits, _wordsize, _mask_all)		\
+{								\
+	.type = IIO_VOLTAGE,					\
+	.indexed = 1,						\
+	.channel = 0,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+		BIT(IIO_CHAN_INFO_OFFSET),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+	.info_mask_shared_by_all = _mask_all,			\
+	.scan_index = 1,					\
+	.scan_type = {						\
+		.sign = 'u',					\
+		.realbits = (_bits),				\
+		.storagebits = 32,				\
+		.shift = (_wordsize) - (_bits),			\
+		.endianness = IIO_BE,				\
+	},							\
+}
+
+#define AD7780_CHANNEL(_bits, _wordsize)	\
+	_AD7780_CHANNEL(_bits, _wordsize, BIT(IIO_CHAN_INFO_SAMP_FREQ))
+#define AD7170_CHANNEL(_bits, _wordsize)	\
+	_AD7780_CHANNEL(_bits, _wordsize, 0)
 
 static const struct ad7780_chip_info ad7780_chip_info_tbl[] = {
 	[ID_AD7170] = {
@@ -281,6 +300,11 @@ static int ad7780_init_gpios(struct device *dev, struct ad7780_state *st)
 	return 0;
 }
 
+static void ad7780_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7780_probe(struct spi_device *spi)
 {
 	struct ad7780_state *st;
@@ -299,9 +323,6 @@ static int ad7780_probe(struct spi_device *spi)
 	st->chip_info =
 		&ad7780_chip_info_tbl[spi_get_device_id(spi)->driver_data];
 
-	spi_set_drvdata(spi, indio_dev);
-
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = &st->chip_info->channel;
@@ -310,7 +331,7 @@ static int ad7780_probe(struct spi_device *spi)
 
 	ret = ad7780_init_gpios(&spi->dev, st);
 	if (ret)
-		goto error_cleanup_buffer_and_trigger;
+		return ret;
 
 	st->reg = devm_regulator_get(&spi->dev, "avdd");
 	if (IS_ERR(st->reg))
@@ -322,35 +343,15 @@ static int ad7780_probe(struct spi_device *spi)
 		return ret;
 	}
 
-	ret = ad_sd_setup_buffer_and_trigger(indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, ad7780_reg_disable, st->reg);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
 	if (ret)
-		goto error_cleanup_buffer_and_trigger;
-
-	return 0;
-
-error_cleanup_buffer_and_trigger:
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-error_disable_reg:
-	regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad7780_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7780_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-
-	regulator_disable(st->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7780_id[] = {
@@ -367,7 +368,6 @@ static struct spi_driver ad7780_driver = {
 		.name	= "ad7780",
 	},
 	.probe		= ad7780_probe,
-	.remove		= ad7780_remove,
 	.id_table	= ad7780_id,
 };
 module_spi_driver(ad7780_driver);
@@ -375,3 +375,4 @@ module_spi_driver(ad7780_driver);
 MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7780 and similar ADCs");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c
index abb239392631..fee8d129a5f0 100644
--- a/drivers/iio/adc/ad7791.c
+++ b/drivers/iio/adc/ad7791.c
@@ -64,25 +64,73 @@
 #define AD7791_MODE_SEL_MASK		(0x3 << 6)
 #define AD7791_MODE_SEL(x)		((x) << 6)
 
+#define __AD7991_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+	_storagebits, _shift, _extend_name, _type, _mask_all) \
+	{ \
+		.type = (_type), \
+		.differential = (_channel2 == -1 ? 0 : 1), \
+		.indexed = 1, \
+		.channel = (_channel1), \
+		.channel2 = (_channel2), \
+		.address = (_address), \
+		.extend_name = (_extend_name), \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_OFFSET), \
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_all = _mask_all, \
+		.scan_index = (_si), \
+		.scan_type = { \
+			.sign = 'u', \
+			.realbits = (_bits), \
+			.storagebits = (_storagebits), \
+			.shift = (_shift), \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+#define AD7991_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7991_CHANNEL(_si, _channel, _channel, _address, _bits, \
+		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7991_CHANNEL(_si, _channel, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7991_CHANNEL(_si, _channel, -1, _address, _bits, \
+		_storagebits, _shift, NULL, IIO_VOLTAGE, \
+		 BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7991_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7991_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+		_storagebits, _shift, NULL, IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7991_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
+	_shift) \
+	__AD7991_CHANNEL(_si, _channel, -1, _address, _bits, \
+		_storagebits, _shift, "supply", IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
 #define DECLARE_AD7787_CHANNELS(name, bits, storagebits) \
 const struct iio_chan_spec name[] = { \
-	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
+	AD7991_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
 		(bits), (storagebits), 0), \
-	AD_SD_CHANNEL(1, 1, AD7791_CH_AIN2, (bits), (storagebits), 0), \
-	AD_SD_SHORTED_CHANNEL(2, 0, AD7791_CH_AIN1N_AIN1N, \
+	AD7991_CHANNEL(1, 1, AD7791_CH_AIN2, (bits), (storagebits), 0), \
+	AD7991_SHORTED_CHANNEL(2, 0, AD7791_CH_AIN1N_AIN1N, \
 		(bits), (storagebits), 0), \
-	AD_SD_SUPPLY_CHANNEL(3, 2, AD7791_CH_AVDD_MONITOR,  \
+	AD7991_SUPPLY_CHANNEL(3, 2, AD7791_CH_AVDD_MONITOR,  \
 		(bits), (storagebits), 0), \
 	IIO_CHAN_SOFT_TIMESTAMP(4), \
 }
 
 #define DECLARE_AD7791_CHANNELS(name, bits, storagebits) \
 const struct iio_chan_spec name[] = { \
-	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
+	AD7991_DIFF_CHANNEL(0, 0, 0, AD7791_CH_AIN1P_AIN1N, \
 		(bits), (storagebits), 0), \
-	AD_SD_SHORTED_CHANNEL(1, 0, AD7791_CH_AIN1N_AIN1N, \
+	AD7991_SHORTED_CHANNEL(1, 0, AD7791_CH_AIN1N_AIN1N, \
 		(bits), (storagebits), 0), \
-	AD_SD_SUPPLY_CHANNEL(2, 1, AD7791_CH_AVDD_MONITOR, \
+	AD7991_SUPPLY_CHANNEL(2, 1, AD7791_CH_AVDD_MONITOR, \
 		(bits), (storagebits), 0), \
 	IIO_CHAN_SOFT_TIMESTAMP(3), \
 }
@@ -346,6 +394,11 @@ static int ad7791_setup(struct ad7791_state *st,
 		st->mode);
 }
 
+static void ad7791_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7791_probe(struct spi_device *spi)
 {
 	struct ad7791_platform_data *pdata = spi->dev.platform_data;
@@ -372,13 +425,13 @@ static int ad7791_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
+	ret = devm_add_action_or_reset(&spi->dev, ad7791_reg_disable, st->reg);
+	if (ret)
+		return ret;
+
 	st->info = &ad7791_chip_infos[spi_get_device_id(spi)->driver_data];
 	ad_sd_init(&st->sd, indio_dev, spi, &ad7791_sigma_delta_info);
 
-	spi_set_drvdata(spi, indio_dev);
-
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->info->channels;
@@ -388,39 +441,15 @@ static int ad7791_probe(struct spi_device *spi)
 	else
 		indio_dev->info = &ad7791_no_filter_info;
 
-	ret = ad_sd_setup_buffer_and_trigger(indio_dev);
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
 	ret = ad7791_setup(st, pdata);
 	if (ret)
-		goto error_remove_trigger;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_remove_trigger;
-
-	return 0;
-
-error_remove_trigger:
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-error_disable_reg:
-	regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad7791_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7791_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-
-	regulator_disable(st->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7791_spi_ids[] = {
@@ -438,11 +467,11 @@ static struct spi_driver ad7791_driver = {
 		.name	= "ad7791",
 	},
 	.probe		= ad7791_probe,
-	.remove		= ad7791_remove,
 	.id_table	= ad7791_spi_ids,
 };
 module_spi_driver(ad7791_driver);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
-MODULE_DESCRIPTION("Analog Device AD7787/AD7788/AD7789/AD7790/AD7791 ADC driver");
+MODULE_DESCRIPTION("Analog Devices AD7787/AD7788/AD7789/AD7790/AD7791 ADC driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index b747db97f78a..5f8cb9aaac70 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -206,7 +206,7 @@ static const struct ad_sigma_delta_info ad7793_sigma_delta_info = {
 	.has_registers = true,
 	.addr_shift = 3,
 	.read_mask = BIT(6),
-	.irq_flags = IRQF_TRIGGER_LOW,
+	.irq_flags = IRQF_TRIGGER_FALLING,
 };
 
 static const struct ad_sd_calib_data ad7793_calib_arr[6] = {
@@ -279,6 +279,7 @@ static int ad7793_setup(struct iio_dev *indio_dev,
 	id &= AD7793_ID_MASK;
 
 	if (id != st->chip_info->id) {
+		ret = -ENODEV;
 		dev_err(&st->sd.spi->dev, "device ID query failed\n");
 		goto out;
 	}
@@ -354,29 +355,28 @@ static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
 static IIO_CONST_ATTR_NAMED(sampling_frequency_available_ad7797,
 	sampling_frequency_available, "123 62 50 33 17 16 12 10 8 6 4");
 
-static ssize_t ad7793_show_scale_available(struct device *dev,
-			struct device_attribute *attr, char *buf)
+static int ad7793_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct ad7793_state *st = iio_priv(indio_dev);
-	int i, len = 0;
 
-	for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
-		len += sprintf(buf + len, "%d.%09u ", st->scale_avail[i][0],
-			       st->scale_avail[i][1]);
-
-	len += sprintf(buf + len, "\n");
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = (int *)st->scale_avail;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		/* Values are stored in a 2D matrix  */
+		*length = ARRAY_SIZE(st->scale_avail) * 2;
 
-	return len;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
 }
 
-static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available,
-		in_voltage-voltage_scale_available, S_IRUGO,
-		ad7793_show_scale_available, NULL, 0);
-
 static struct attribute *ad7793_attributes[] = {
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
-	&iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
 	NULL
 };
 
@@ -534,6 +534,7 @@ static const struct iio_info ad7793_info = {
 	.read_raw = &ad7793_read_raw,
 	.write_raw = &ad7793_write_raw,
 	.write_raw_get_fmt = &ad7793_write_raw_get_fmt,
+	.read_avail = ad7793_read_avail,
 	.attrs = &ad7793_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
 };
@@ -542,51 +543,117 @@ static const struct iio_info ad7797_info = {
 	.read_raw = &ad7793_read_raw,
 	.write_raw = &ad7793_write_raw,
 	.write_raw_get_fmt = &ad7793_write_raw_get_fmt,
-	.attrs = &ad7793_attribute_group,
+	.attrs = &ad7797_attribute_group,
 	.validate_trigger = ad_sd_validate_trigger,
 };
 
+#define __AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+	_storagebits, _shift, _extend_name, _type, _mask_type_av, _mask_all) \
+	{ \
+		.type = (_type), \
+		.differential = (_channel2 == -1 ? 0 : 1), \
+		.indexed = 1, \
+		.channel = (_channel1), \
+		.channel2 = (_channel2), \
+		.address = (_address), \
+		.extend_name = (_extend_name), \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_OFFSET), \
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_type_available = (_mask_type_av), \
+		.info_mask_shared_by_all = _mask_all, \
+		.scan_index = (_si), \
+		.scan_type = { \
+			.sign = 'u', \
+			.realbits = (_bits), \
+			.storagebits = (_storagebits), \
+			.shift = (_shift), \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+#define AD7793_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+		_storagebits, _shift, NULL, IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SCALE), \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7793_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
+		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
+		BIT(IIO_CHAN_INFO_SCALE), \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7793_TEMP_CHANNEL(_si, _address, _bits, _storagebits, _shift) \
+	__AD7793_CHANNEL(_si, 0, -1, _address, _bits, \
+		_storagebits, _shift, NULL, IIO_TEMP, \
+		0, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7793_SUPPLY_CHANNEL(_si, _channel, _address, _bits, _storagebits, \
+	_shift) \
+	__AD7793_CHANNEL(_si, _channel, -1, _address, _bits, \
+		_storagebits, _shift, "supply", IIO_VOLTAGE, \
+		0, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7797_DIFF_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7793_CHANNEL(_si, _channel1, _channel2, _address, _bits, \
+		_storagebits, _shift, NULL, IIO_VOLTAGE, \
+		0, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
+#define AD7797_SHORTED_CHANNEL(_si, _channel, _address, _bits, \
+	_storagebits, _shift) \
+	__AD7793_CHANNEL(_si, _channel, _channel, _address, _bits, \
+		_storagebits, _shift, "shorted", IIO_VOLTAGE, \
+		0, \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ))
+
 #define DECLARE_AD7793_CHANNELS(_name, _b, _sb, _s) \
 const struct iio_chan_spec _name##_channels[] = { \
-	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), (_s)), \
-	AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), (_s)), \
-	AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), (_s)), \
-	AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), (_s)), \
-	AD_SD_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), (_s)), \
-	AD_SD_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), (_s)), \
+	AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), (_s)), \
+	AD7793_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), (_s)), \
+	AD7793_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), (_s)), \
+	AD7793_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), (_s)), \
+	AD7793_TEMP_CHANNEL(4, AD7793_CH_TEMP, (_b), (_sb), (_s)), \
+	AD7793_SUPPLY_CHANNEL(5, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), (_s)), \
 	IIO_CHAN_SOFT_TIMESTAMP(6), \
 }
 
 #define DECLARE_AD7795_CHANNELS(_name, _b, _sb) \
 const struct iio_chan_spec _name##_channels[] = { \
-	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(3, 3, 3, AD7795_CH_AIN4P_AIN4M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(4, 4, 4, AD7795_CH_AIN5P_AIN5M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(5, 5, 5, AD7795_CH_AIN6P_AIN6M, (_b), (_sb), 0), \
-	AD_SD_SHORTED_CHANNEL(6, 0, AD7795_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
-	AD_SD_TEMP_CHANNEL(7, AD7793_CH_TEMP, (_b), (_sb), 0), \
-	AD_SD_SUPPLY_CHANNEL(8, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(3, 3, 3, AD7795_CH_AIN4P_AIN4M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(4, 4, 4, AD7795_CH_AIN5P_AIN5M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(5, 5, 5, AD7795_CH_AIN6P_AIN6M, (_b), (_sb), 0), \
+	AD7793_SHORTED_CHANNEL(6, 0, AD7795_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+	AD7793_TEMP_CHANNEL(7, AD7793_CH_TEMP, (_b), (_sb), 0), \
+	AD7793_SUPPLY_CHANNEL(8, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
 	IIO_CHAN_SOFT_TIMESTAMP(9), \
 }
 
 #define DECLARE_AD7797_CHANNELS(_name, _b, _sb) \
 const struct iio_chan_spec _name##_channels[] = { \
-	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
-	AD_SD_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
-	AD_SD_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
-	AD_SD_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
+	AD7797_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+	AD7797_SHORTED_CHANNEL(1, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+	AD7793_TEMP_CHANNEL(2, AD7793_CH_TEMP, (_b), (_sb), 0), \
+	AD7793_SUPPLY_CHANNEL(3, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
 	IIO_CHAN_SOFT_TIMESTAMP(4), \
 }
 
 #define DECLARE_AD7799_CHANNELS(_name, _b, _sb) \
 const struct iio_chan_spec _name##_channels[] = { \
-	AD_SD_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
-	AD_SD_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
-	AD_SD_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
-	AD_SD_SUPPLY_CHANNEL(4, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(0, 0, 0, AD7793_CH_AIN1P_AIN1M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(1, 1, 1, AD7793_CH_AIN2P_AIN2M, (_b), (_sb), 0), \
+	AD7793_DIFF_CHANNEL(2, 2, 2, AD7793_CH_AIN3P_AIN3M, (_b), (_sb), 0), \
+	AD7793_SHORTED_CHANNEL(3, 0, AD7793_CH_AIN1M_AIN1M, (_b), (_sb), 0), \
+	AD7793_SUPPLY_CHANNEL(4, 3, AD7793_CH_AVDD_MONITOR, (_b), (_sb), 0), \
 	IIO_CHAN_SOFT_TIMESTAMP(5), \
 }
 
@@ -702,6 +769,11 @@ static const struct ad7793_chip_info ad7793_chip_info_tbl[] = {
 	},
 };
 
+static void ad7793_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7793_probe(struct spi_device *spi)
 {
 	const struct ad7793_platform_data *pdata = spi->dev.platform_data;
@@ -736,11 +808,13 @@ static int ad7793_probe(struct spi_device *spi)
 		if (ret)
 			return ret;
 
+		ret = devm_add_action_or_reset(&spi->dev, ad7793_reg_disable, st->reg);
+		if (ret)
+			return ret;
+
 		vref_mv = regulator_get_voltage(st->reg);
-		if (vref_mv < 0) {
-			ret = vref_mv;
-			goto error_disable_reg;
-		}
+		if (vref_mv < 0)
+			return vref_mv;
 
 		vref_mv /= 1000;
 	} else {
@@ -750,52 +824,21 @@ static int ad7793_probe(struct spi_device *spi)
 	st->chip_info =
 		&ad7793_chip_info_tbl[spi_get_device_id(spi)->driver_data];
 
-	spi_set_drvdata(spi, indio_dev);
-
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 	indio_dev->info = st->chip_info->iio_info;
 
-	ret = ad_sd_setup_buffer_and_trigger(indio_dev);
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
 	ret = ad7793_setup(indio_dev, pdata, vref_mv);
 	if (ret)
-		goto error_remove_trigger;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_remove_trigger;
-
-	return 0;
-
-error_remove_trigger:
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-error_disable_reg:
-	if (pdata->refsel != AD7793_REFSEL_INTERNAL)
-		regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad7793_remove(struct spi_device *spi)
-{
-	const struct ad7793_platform_data *pdata = spi->dev.platform_data;
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7793_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	ad_sd_cleanup_buffer_and_trigger(indio_dev);
-
-	if (pdata->refsel != AD7793_REFSEL_INTERNAL)
-		regulator_disable(st->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7793_id[] = {
@@ -817,7 +860,6 @@ static struct spi_driver ad7793_driver = {
 		.name	= "ad7793",
 	},
 	.probe		= ad7793_probe,
-	.remove		= ad7793_remove,
 	.id_table	= ad7793_id,
 };
 module_spi_driver(ad7793_driver);
@@ -825,3 +867,4 @@ module_spi_driver(ad7793_driver);
 MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD7793 and similar ADCs");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
index c6a3428e950a..965bdc8aa696 100644
--- a/drivers/iio/adc/ad7887.c
+++ b/drivers/iio/adc/ad7887.c
@@ -66,13 +66,12 @@ struct ad7887_state {
 	unsigned char			tx_cmd_buf[4];
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * Buffer needs to be large enough to hold two 16 bit samples and a
 	 * 64 bit aligned 64 bit timestamp.
 	 */
-	unsigned char data[ALIGN(4, sizeof(s64)) + sizeof(s64)]
-		____cacheline_aligned;
+	unsigned char data[ALIGN(4, sizeof(s64)) + sizeof(s64)] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad7887_supported_device_ids {
@@ -109,12 +108,6 @@ static int ad7887_ring_postdisable(struct iio_dev *indio_dev)
 	return spi_sync(st->spi, &st->msg[AD7887_CH0]);
 }
 
-/**
- * ad7887_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
 static irqreturn_t ad7887_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
@@ -136,8 +129,6 @@ done:
 
 static const struct iio_buffer_setup_ops ad7887_ring_setup_ops = {
 	.preenable = &ad7887_ring_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
 	.postdisable = &ad7887_ring_postdisable,
 };
 
@@ -234,6 +225,13 @@ static const struct iio_info ad7887_info = {
 	.read_raw = &ad7887_read_raw,
 };
 
+static void ad7887_reg_disable(void *data)
+{
+	struct regulator *reg = data;
+
+	regulator_disable(reg);
+}
+
 static int ad7887_probe(struct spi_device *spi)
 {
 	struct ad7887_platform_data *pdata = spi->dev.platform_data;
@@ -248,25 +246,29 @@ static int ad7887_probe(struct spi_device *spi)
 
 	st = iio_priv(indio_dev);
 
-	if (!pdata || !pdata->use_onchip_ref) {
-		st->reg = devm_regulator_get(&spi->dev, "vref");
-		if (IS_ERR(st->reg))
+	st->reg = devm_regulator_get_optional(&spi->dev, "vref");
+	if (IS_ERR(st->reg)) {
+		if (PTR_ERR(st->reg) != -ENODEV)
 			return PTR_ERR(st->reg);
 
+		st->reg = NULL;
+	}
+
+	if (st->reg) {
 		ret = regulator_enable(st->reg);
 		if (ret)
 			return ret;
+
+		ret = devm_add_action_or_reset(&spi->dev, ad7887_reg_disable, st->reg);
+		if (ret)
+			return ret;
 	}
 
 	st->chip_info =
 		&ad7887_chip_info_tbl[spi_get_device_id(spi)->driver_data];
 
-	spi_set_drvdata(spi, indio_dev);
 	st->spi = spi;
 
-	/* Estabilish that the iio_dev is a child of the spi device */
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad7887_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -274,7 +276,7 @@ static int ad7887_probe(struct spi_device *spi)
 	/* Setup default message */
 
 	mode = AD7887_PM_MODE4;
-	if (!pdata || !pdata->use_onchip_ref)
+	if (!st->reg)
 		mode |= AD7887_REF_DIS;
 	if (pdata && pdata->en_dual)
 		mode |= AD7887_DUAL;
@@ -317,36 +319,13 @@ static int ad7887_probe(struct spi_device *spi)
 		indio_dev->num_channels = st->chip_info->num_channels;
 	}
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+			&iio_pollfunc_store_time,
 			&ad7887_trigger_handler, &ad7887_ring_setup_ops);
 	if (ret)
-		goto error_disable_reg;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_unregister_ring;
-
-	return 0;
-error_unregister_ring:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	if (st->reg)
-		regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad7887_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7887_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (st->reg)
-		regulator_disable(st->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7887_id[] = {
@@ -360,7 +339,6 @@ static struct spi_driver ad7887_driver = {
 		.name	= "ad7887",
 	},
 	.probe		= ad7887_probe,
-	.remove		= ad7887_remove,
 	.id_table	= ad7887_id,
 };
 module_spi_driver(ad7887_driver);
diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
index 1d124c87c6ac..9d6bf6d0927a 100644
--- a/drivers/iio/adc/ad7923.c
+++ b/drivers/iio/adc/ad7923.c
@@ -8,6 +8,7 @@
 
 #include <linux/device.h>
 #include <linux/kernel.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/spi/spi.h>
@@ -57,10 +58,12 @@ struct ad7923_state {
 	unsigned int			settings;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
+	 * Ensure rx_buf can be directly used in iio_push_to_buffers_with_timetamp
+	 * Length = 8 channels + 4 extra for 8 byte timestamp
 	 */
-	__be16				rx_buf[4] ____cacheline_aligned;
+	__be16				rx_buf[12] __aligned(IIO_DMA_MINALIGN);
 	__be16				tx_buf[4];
 };
 
@@ -91,6 +94,7 @@ enum ad7923_id {
 			.sign = 'u',					\
 			.realbits = (bits),				\
 			.storagebits = 16,				\
+			.shift = 12 - (bits),				\
 			.endianness = IIO_BE,				\
 		},							\
 	}
@@ -151,9 +155,9 @@ static const struct ad7923_chip_info ad7923_chip_info[] = {
 	},
 };
 
-/**
+/*
  * ad7923_update_scan_mode() setup the spi transfer buffer for the new scan mask
- **/
+ */
 static int ad7923_update_scan_mode(struct iio_dev *indio_dev,
 				   const unsigned long *active_scan_mask)
 {
@@ -192,12 +196,6 @@ static int ad7923_update_scan_mode(struct iio_dev *indio_dev,
 	return 0;
 }
 
-/**
- * ad7923_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
 static irqreturn_t ad7923_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
@@ -272,7 +270,8 @@ static int ad7923_read_raw(struct iio_dev *indio_dev,
 			return ret;
 
 		if (chan->address == EXTRACT(ret, 12, 4))
-			*val = EXTRACT(ret, 0, 12);
+			*val = EXTRACT(ret, chan->scan_type.shift,
+				       chan->scan_type.realbits);
 		else
 			return -EIO;
 
@@ -293,8 +292,16 @@ static const struct iio_info ad7923_info = {
 	.update_scan_mode = ad7923_update_scan_mode,
 };
 
+static void ad7923_regulator_disable(void *data)
+{
+	struct ad7923_state *st = data;
+
+	regulator_disable(st->reg);
+}
+
 static int ad7923_probe(struct spi_device *spi)
 {
+	u32 ad7923_range = AD7923_RANGE;
 	struct ad7923_state *st;
 	struct iio_dev *indio_dev;
 	const struct ad7923_chip_info *info;
@@ -306,17 +313,16 @@ static int ad7923_probe(struct spi_device *spi)
 
 	st = iio_priv(indio_dev);
 
-	spi_set_drvdata(spi, indio_dev);
+	if (device_property_read_bool(&spi->dev, "adi,range-double"))
+		ad7923_range = 0;
 
 	st->spi = spi;
-	st->settings = AD7923_CODING | AD7923_RANGE |
+	st->settings = AD7923_CODING | ad7923_range |
 			AD7923_PM_MODE_WRITE(AD7923_PM_MODE_OPS);
 
 	info = &ad7923_chip_info[spi_get_device_id(spi)->driver_data];
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = info->channels;
 	indio_dev->num_channels = info->num_channels;
@@ -342,35 +348,16 @@ static int ad7923_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-					 &ad7923_trigger_handler, NULL);
+	ret = devm_add_action_or_reset(&spi->dev, ad7923_regulator_disable, st);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
+					      &ad7923_trigger_handler, NULL);
 	if (ret)
-		goto error_cleanup_ring;
-
-	return 0;
-
-error_cleanup_ring:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad7923_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7923_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	regulator_disable(st->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad7923_id[] = {
@@ -403,7 +390,6 @@ static struct spi_driver ad7923_driver = {
 		.of_match_table = ad7923_of_match,
 	},
 	.probe		= ad7923_probe,
-	.remove		= ad7923_remove,
 	.id_table	= ad7923_id,
 };
 module_spi_driver(ad7923_driver);
diff --git a/drivers/iio/adc/ad7949.c b/drivers/iio/adc/ad7949.c
index 2c6f60edb7ce..edd0c3a35ab7 100644
--- a/drivers/iio/adc/ad7949.c
+++ b/drivers/iio/adc/ad7949.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2018 CMC NV
  *
- * http://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf
+ * https://www.analog.com/media/en/technical-documentation/data-sheets/AD7949.pdf
  */
 
 #include <linux/delay.h>
@@ -11,12 +11,41 @@
 #include <linux/module.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
+#include <linux/bitfield.h>
 
-#define AD7949_MASK_CHANNEL_SEL		GENMASK(9, 7)
-#define AD7949_MASK_TOTAL		GENMASK(13, 0)
-#define AD7949_OFFSET_CHANNEL_SEL	7
-#define AD7949_CFG_READ_BACK		0x1
-#define AD7949_CFG_REG_SIZE_BITS	14
+#define AD7949_CFG_MASK_TOTAL		GENMASK(13, 0)
+
+/* CFG: Configuration Update */
+#define AD7949_CFG_MASK_OVERWRITE	BIT(13)
+
+/* INCC: Input Channel Configuration */
+#define AD7949_CFG_MASK_INCC		GENMASK(12, 10)
+#define AD7949_CFG_VAL_INCC_UNIPOLAR_GND	7
+#define AD7949_CFG_VAL_INCC_UNIPOLAR_COMM	6
+#define AD7949_CFG_VAL_INCC_UNIPOLAR_DIFF	4
+#define AD7949_CFG_VAL_INCC_TEMP		3
+#define AD7949_CFG_VAL_INCC_BIPOLAR		2
+#define AD7949_CFG_VAL_INCC_BIPOLAR_DIFF	0
+
+/* INX: Input channel Selection in a binary fashion */
+#define AD7949_CFG_MASK_INX		GENMASK(9, 7)
+
+/* BW: select bandwidth for low-pass filter. Full or Quarter */
+#define AD7949_CFG_MASK_BW_FULL		BIT(6)
+
+/* REF: reference/buffer selection */
+#define AD7949_CFG_MASK_REF		GENMASK(5, 3)
+#define AD7949_CFG_VAL_REF_EXT_TEMP_BUF		3
+#define AD7949_CFG_VAL_REF_EXT_TEMP		2
+#define AD7949_CFG_VAL_REF_INT_4096		1
+#define AD7949_CFG_VAL_REF_INT_2500		0
+#define AD7949_CFG_VAL_REF_EXTERNAL		BIT(1)
+
+/* SEQ: channel sequencer. Allows for scanning channels */
+#define AD7949_CFG_MASK_SEQ		GENMASK(2, 1)
+
+/* RB: Read back the CFG register */
+#define AD7949_CFG_MASK_RBN		BIT(0)
 
 enum {
 	ID_AD7949 = 0,
@@ -39,43 +68,53 @@ static const struct ad7949_adc_spec ad7949_adc_spec[] = {
  * struct ad7949_adc_chip - AD ADC chip
  * @lock: protects write sequences
  * @vref: regulator generating Vref
- * @iio_dev: reference to iio structure
+ * @indio_dev: reference to iio structure
  * @spi: reference to spi structure
+ * @refsel: reference selection
  * @resolution: resolution of the chip
  * @cfg: copy of the configuration register
  * @current_channel: current channel in use
  * @buffer: buffer to send / receive data to / from device
+ * @buf8b: be16 buffer to exchange data with the device in 8-bit transfers
  */
 struct ad7949_adc_chip {
 	struct mutex lock;
 	struct regulator *vref;
 	struct iio_dev *indio_dev;
 	struct spi_device *spi;
+	u32 refsel;
 	u8 resolution;
 	u16 cfg;
 	unsigned int current_channel;
-	u16 buffer ____cacheline_aligned;
+	u16 buffer __aligned(IIO_DMA_MINALIGN);
+	__be16 buf8b;
 };
 
 static int ad7949_spi_write_cfg(struct ad7949_adc_chip *ad7949_adc, u16 val,
 				u16 mask)
 {
 	int ret;
-	int bits_per_word = ad7949_adc->resolution;
-	int shift = bits_per_word - AD7949_CFG_REG_SIZE_BITS;
-	struct spi_message msg;
-	struct spi_transfer tx[] = {
-		{
-			.tx_buf = &ad7949_adc->buffer,
-			.len = 2,
-			.bits_per_word = bits_per_word,
-		},
-	};
 
 	ad7949_adc->cfg = (val & mask) | (ad7949_adc->cfg & ~mask);
-	ad7949_adc->buffer = ad7949_adc->cfg << shift;
-	spi_message_init_with_transfers(&msg, tx, 1);
-	ret = spi_sync(ad7949_adc->spi, &msg);
+
+	switch (ad7949_adc->spi->bits_per_word) {
+	case 16:
+		ad7949_adc->buffer = ad7949_adc->cfg << 2;
+		ret = spi_write(ad7949_adc->spi, &ad7949_adc->buffer, 2);
+		break;
+	case 14:
+		ad7949_adc->buffer = ad7949_adc->cfg;
+		ret = spi_write(ad7949_adc->spi, &ad7949_adc->buffer, 2);
+		break;
+	case 8:
+		/* Here, type is big endian as it must be sent in two transfers */
+		ad7949_adc->buf8b = cpu_to_be16(ad7949_adc->cfg << 2);
+		ret = spi_write(ad7949_adc->spi, &ad7949_adc->buf8b, 2);
+		break;
+	default:
+		dev_err(&ad7949_adc->indio_dev->dev, "unsupported BPW\n");
+		return -EINVAL;
+	}
 
 	/*
 	 * This delay is to avoid a new request before the required time to
@@ -90,16 +129,6 @@ static int ad7949_spi_read_channel(struct ad7949_adc_chip *ad7949_adc, int *val,
 {
 	int ret;
 	int i;
-	int bits_per_word = ad7949_adc->resolution;
-	int mask = GENMASK(ad7949_adc->resolution, 0);
-	struct spi_message msg;
-	struct spi_transfer tx[] = {
-		{
-			.rx_buf = &ad7949_adc->buffer,
-			.len = 2,
-			.bits_per_word = bits_per_word,
-		},
-	};
 
 	/*
 	 * 1: write CFG for sample N and read old data (sample N-2)
@@ -109,8 +138,8 @@ static int ad7949_spi_read_channel(struct ad7949_adc_chip *ad7949_adc, int *val,
 	 */
 	for (i = 0; i < 2; i++) {
 		ret = ad7949_spi_write_cfg(ad7949_adc,
-					   channel << AD7949_OFFSET_CHANNEL_SEL,
-					   AD7949_MASK_CHANNEL_SEL);
+					   FIELD_PREP(AD7949_CFG_MASK_INX, channel),
+					   AD7949_CFG_MASK_INX);
 		if (ret)
 			return ret;
 		if (channel == ad7949_adc->current_channel)
@@ -118,9 +147,11 @@ static int ad7949_spi_read_channel(struct ad7949_adc_chip *ad7949_adc, int *val,
 	}
 
 	/* 3: write something and read actual data */
-	ad7949_adc->buffer = 0;
-	spi_message_init_with_transfers(&msg, tx, 1);
-	ret = spi_sync(ad7949_adc->spi, &msg);
+	if (ad7949_adc->spi->bits_per_word == 8)
+		ret = spi_read(ad7949_adc->spi, &ad7949_adc->buf8b, 2);
+	else
+		ret = spi_read(ad7949_adc->spi, &ad7949_adc->buffer, 2);
+
 	if (ret)
 		return ret;
 
@@ -132,7 +163,25 @@ static int ad7949_spi_read_channel(struct ad7949_adc_chip *ad7949_adc, int *val,
 
 	ad7949_adc->current_channel = channel;
 
-	*val = ad7949_adc->buffer & mask;
+	switch (ad7949_adc->spi->bits_per_word) {
+	case 16:
+		*val = ad7949_adc->buffer;
+		/* Shift-out padding bits */
+		*val >>= 16 - ad7949_adc->resolution;
+		break;
+	case 14:
+		*val = ad7949_adc->buffer & GENMASK(13, 0);
+		break;
+	case 8:
+		/* Here, type is big endian as data was sent in two transfers */
+		*val = be16_to_cpu(ad7949_adc->buf8b);
+		/* Shift-out padding bits */
+		*val >>= 16 - ad7949_adc->resolution;
+		break;
+	default:
+		dev_err(&ad7949_adc->indio_dev->dev, "unsupported BPW\n");
+		return -EINVAL;
+	}
 
 	return 0;
 }
@@ -178,12 +227,26 @@ static int ad7949_spi_read_raw(struct iio_dev *indio_dev,
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_SCALE:
-		ret = regulator_get_voltage(ad7949_adc->vref);
-		if (ret < 0)
-			return ret;
+		switch (ad7949_adc->refsel) {
+		case AD7949_CFG_VAL_REF_INT_2500:
+			*val = 2500;
+			break;
+		case AD7949_CFG_VAL_REF_INT_4096:
+			*val = 4096;
+			break;
+		case AD7949_CFG_VAL_REF_EXT_TEMP:
+		case AD7949_CFG_VAL_REF_EXT_TEMP_BUF:
+			ret = regulator_get_voltage(ad7949_adc->vref);
+			if (ret < 0)
+				return ret;
+
+			/* convert value back to mV */
+			*val = ret / 1000;
+			break;
+		}
 
-		*val = ret / 5000;
-		return IIO_VAL_INT;
+		*val2 = (1 << ad7949_adc->resolution) - 1;
+		return IIO_VAL_FRACTIONAL;
 	}
 
 	return -EINVAL;
@@ -199,8 +262,8 @@ static int ad7949_spi_reg_access(struct iio_dev *indio_dev,
 	if (readval)
 		*readval = ad7949_adc->cfg;
 	else
-		ret = ad7949_spi_write_cfg(ad7949_adc,
-			writeval & AD7949_MASK_TOTAL, AD7949_MASK_TOTAL);
+		ret = ad7949_spi_write_cfg(ad7949_adc, writeval,
+					   AD7949_CFG_MASK_TOTAL);
 
 	return ret;
 }
@@ -214,10 +277,19 @@ static int ad7949_spi_init(struct ad7949_adc_chip *ad7949_adc)
 {
 	int ret;
 	int val;
+	u16 cfg;
 
-	/* Sequencer disabled, CFG readback disabled, IN0 as default channel */
 	ad7949_adc->current_channel = 0;
-	ret = ad7949_spi_write_cfg(ad7949_adc, 0x3C79, AD7949_MASK_TOTAL);
+
+	cfg = FIELD_PREP(AD7949_CFG_MASK_OVERWRITE, 1) |
+		FIELD_PREP(AD7949_CFG_MASK_INCC, AD7949_CFG_VAL_INCC_UNIPOLAR_GND) |
+		FIELD_PREP(AD7949_CFG_MASK_INX, ad7949_adc->current_channel) |
+		FIELD_PREP(AD7949_CFG_MASK_BW_FULL, 1) |
+		FIELD_PREP(AD7949_CFG_MASK_REF, ad7949_adc->refsel) |
+		FIELD_PREP(AD7949_CFG_MASK_SEQ, 0x0) |
+		FIELD_PREP(AD7949_CFG_MASK_RBN, 1);
+
+	ret = ad7949_spi_write_cfg(ad7949_adc, cfg, AD7949_CFG_MASK_TOTAL);
 
 	/*
 	 * Do two dummy conversions to apply the first configuration setting.
@@ -229,12 +301,19 @@ static int ad7949_spi_init(struct ad7949_adc_chip *ad7949_adc)
 	return ret;
 }
 
+static void ad7949_disable_reg(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7949_spi_probe(struct spi_device *spi)
 {
+	u32 spi_ctrl_mask = spi->controller->bits_per_word_mask;
 	struct device *dev = &spi->dev;
 	const struct ad7949_adc_spec *spec;
 	struct ad7949_adc_chip *ad7949_adc;
 	struct iio_dev *indio_dev;
+	u32 tmp;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*ad7949_adc));
@@ -243,8 +322,6 @@ static int ad7949_spi_probe(struct spi_device *spi)
 		return -ENOMEM;
 	}
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = dev->of_node;
 	indio_dev->info = &ad7949_spi_info;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -259,53 +336,81 @@ static int ad7949_spi_probe(struct spi_device *spi)
 	indio_dev->num_channels = spec->num_channels;
 	ad7949_adc->resolution = spec->resolution;
 
-	ad7949_adc->vref = devm_regulator_get(dev, "vref");
+	/* Set SPI bits per word */
+	if (spi_ctrl_mask & SPI_BPW_MASK(ad7949_adc->resolution)) {
+		spi->bits_per_word = ad7949_adc->resolution;
+	} else if (spi_ctrl_mask == SPI_BPW_MASK(16)) {
+		spi->bits_per_word = 16;
+	} else if (spi_ctrl_mask == SPI_BPW_MASK(8)) {
+		spi->bits_per_word = 8;
+	} else {
+		dev_err(dev, "unable to find common BPW with spi controller\n");
+		return -EINVAL;
+	}
+
+	/* Setup internal voltage reference */
+	tmp = 4096000;
+	device_property_read_u32(dev, "adi,internal-ref-microvolt", &tmp);
+
+	switch (tmp) {
+	case 2500000:
+		ad7949_adc->refsel = AD7949_CFG_VAL_REF_INT_2500;
+		break;
+	case 4096000:
+		ad7949_adc->refsel = AD7949_CFG_VAL_REF_INT_4096;
+		break;
+	default:
+		dev_err(dev, "unsupported internal voltage reference\n");
+		return -EINVAL;
+	}
+
+	/* Setup external voltage reference, buffered? */
+	ad7949_adc->vref = devm_regulator_get_optional(dev, "vrefin");
 	if (IS_ERR(ad7949_adc->vref)) {
-		dev_err(dev, "fail to request regulator\n");
-		return PTR_ERR(ad7949_adc->vref);
+		ret = PTR_ERR(ad7949_adc->vref);
+		if (ret != -ENODEV)
+			return ret;
+		/* unbuffered? */
+		ad7949_adc->vref = devm_regulator_get_optional(dev, "vref");
+		if (IS_ERR(ad7949_adc->vref)) {
+			ret = PTR_ERR(ad7949_adc->vref);
+			if (ret != -ENODEV)
+				return ret;
+		} else {
+			ad7949_adc->refsel = AD7949_CFG_VAL_REF_EXT_TEMP;
+		}
+	} else {
+		ad7949_adc->refsel = AD7949_CFG_VAL_REF_EXT_TEMP_BUF;
 	}
 
-	ret = regulator_enable(ad7949_adc->vref);
-	if (ret < 0) {
-		dev_err(dev, "fail to enable regulator\n");
-		return ret;
+	if (ad7949_adc->refsel & AD7949_CFG_VAL_REF_EXTERNAL) {
+		ret = regulator_enable(ad7949_adc->vref);
+		if (ret < 0) {
+			dev_err(dev, "fail to enable regulator\n");
+			return ret;
+		}
+
+		ret = devm_add_action_or_reset(dev, ad7949_disable_reg,
+					       ad7949_adc->vref);
+		if (ret)
+			return ret;
 	}
 
 	mutex_init(&ad7949_adc->lock);
 
 	ret = ad7949_spi_init(ad7949_adc);
 	if (ret) {
-		dev_err(dev, "enable to init this device: %d\n", ret);
-		goto err;
+		dev_err(dev, "fail to init this device: %d\n", ret);
+		return ret;
 	}
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
 		dev_err(dev, "fail to register iio device: %d\n", ret);
-		goto err;
-	}
-
-	return 0;
-
-err:
-	mutex_destroy(&ad7949_adc->lock);
-	regulator_disable(ad7949_adc->vref);
 
 	return ret;
 }
 
-static int ad7949_spi_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7949_adc_chip *ad7949_adc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	mutex_destroy(&ad7949_adc->lock);
-	regulator_disable(ad7949_adc->vref);
-
-	return 0;
-}
-
 static const struct of_device_id ad7949_spi_of_id[] = {
 	{ .compatible = "adi,ad7949" },
 	{ .compatible = "adi,ad7682" },
@@ -328,7 +433,6 @@ static struct spi_driver ad7949_spi_driver = {
 		.of_match_table	= ad7949_spi_of_id,
 	},
 	.probe	  = ad7949_spi_probe,
-	.remove   = ad7949_spi_remove,
 	.id_table = ad7949_spi_id,
 };
 module_spi_driver(ad7949_spi_driver);
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index ef013af1aec0..6dbe9d5e08a2 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -182,12 +182,6 @@ static int ad799x_update_config(struct ad799x_state *st, u16 config)
 	return 0;
 }
 
-/**
- * ad799x_trigger_handler() bh of trigger launched polling to ring buffer
- *
- * Currently there is no option in this driver to disable the saving of
- * timestamps within the ring.
- **/
 static irqreturn_t ad799x_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
@@ -305,7 +299,11 @@ static int ad799x_read_raw(struct iio_dev *indio_dev,
 			GENMASK(chan->scan_type.realbits - 1, 0);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		ret = regulator_get_voltage(st->vref);
+		if (st->vref)
+			ret = regulator_get_voltage(st->vref);
+		else
+			ret = regulator_get_voltage(st->reg);
+
 		if (ret < 0)
 			return ret;
 		*val = ret / 1000;
@@ -776,6 +774,7 @@ static int ad799x_probe(struct i2c_client *client,
 				   const struct i2c_device_id *id)
 {
 	int ret;
+	int extra_config = 0;
 	struct ad799x_state *st;
 	struct iio_dev *indio_dev;
 	const struct ad799x_chip_info *chip_info =
@@ -803,19 +802,39 @@ static int ad799x_probe(struct i2c_client *client,
 	ret = regulator_enable(st->reg);
 	if (ret)
 		return ret;
-	st->vref = devm_regulator_get(&client->dev, "vref");
+
+	/* check if an external reference is supplied */
+	st->vref = devm_regulator_get_optional(&client->dev, "vref");
+
 	if (IS_ERR(st->vref)) {
-		ret = PTR_ERR(st->vref);
-		goto error_disable_reg;
+		if (PTR_ERR(st->vref) == -ENODEV) {
+			st->vref = NULL;
+			dev_info(&client->dev, "Using VCC reference voltage\n");
+		} else {
+			ret = PTR_ERR(st->vref);
+			goto error_disable_reg;
+		}
+	}
+
+	if (st->vref) {
+		/*
+		 * Use external reference voltage if supported by hardware.
+		 * This is optional if voltage / regulator present, use VCC otherwise.
+		 */
+		if ((st->id == ad7991) || (st->id == ad7995) || (st->id == ad7999)) {
+			dev_info(&client->dev, "Using external reference voltage\n");
+			extra_config |= AD7991_REF_SEL;
+			ret = regulator_enable(st->vref);
+			if (ret)
+				goto error_disable_reg;
+		} else {
+			st->vref = NULL;
+			dev_warn(&client->dev, "Supplied reference not supported\n");
+		}
 	}
-	ret = regulator_enable(st->vref);
-	if (ret)
-		goto error_disable_reg;
 
 	st->client = client;
 
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->name = id->name;
 	indio_dev->info = st->chip_config->info;
 
@@ -823,7 +842,7 @@ static int ad799x_probe(struct i2c_client *client,
 	indio_dev->channels = st->chip_config->channel;
 	indio_dev->num_channels = chip_info->num_channels;
 
-	ret = ad799x_update_config(st, st->chip_config->default_config);
+	ret = ad799x_update_config(st, st->chip_config->default_config | extra_config);
 	if (ret)
 		goto error_disable_vref;
 
@@ -853,14 +872,15 @@ static int ad799x_probe(struct i2c_client *client,
 error_cleanup_ring:
 	iio_triggered_buffer_cleanup(indio_dev);
 error_disable_vref:
-	regulator_disable(st->vref);
+	if (st->vref)
+		regulator_disable(st->vref);
 error_disable_reg:
 	regulator_disable(st->reg);
 
 	return ret;
 }
 
-static int ad799x_remove(struct i2c_client *client)
+static void ad799x_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ad799x_state *st = iio_priv(indio_dev);
@@ -868,25 +888,25 @@ static int ad799x_remove(struct i2c_client *client)
 	iio_device_unregister(indio_dev);
 
 	iio_triggered_buffer_cleanup(indio_dev);
-	regulator_disable(st->vref);
+	if (st->vref)
+		regulator_disable(st->vref);
 	regulator_disable(st->reg);
 	kfree(st->rx_buf);
-
-	return 0;
 }
 
-static int __maybe_unused ad799x_suspend(struct device *dev)
+static int ad799x_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct ad799x_state *st = iio_priv(indio_dev);
 
-	regulator_disable(st->vref);
+	if (st->vref)
+		regulator_disable(st->vref);
 	regulator_disable(st->reg);
 
 	return 0;
 }
 
-static int __maybe_unused ad799x_resume(struct device *dev)
+static int ad799x_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct ad799x_state *st = iio_priv(indio_dev);
@@ -897,17 +917,21 @@ static int __maybe_unused ad799x_resume(struct device *dev)
 		dev_err(dev, "Unable to enable vcc regulator\n");
 		return ret;
 	}
-	ret = regulator_enable(st->vref);
-	if (ret) {
-		regulator_disable(st->reg);
-		dev_err(dev, "Unable to enable vref regulator\n");
-		return ret;
+
+	if (st->vref) {
+		ret = regulator_enable(st->vref);
+		if (ret) {
+			regulator_disable(st->reg);
+			dev_err(dev, "Unable to enable vref regulator\n");
+			return ret;
+		}
 	}
 
 	/* resync config */
 	ret = ad799x_update_config(st, st->config);
 	if (ret) {
-		regulator_disable(st->vref);
+		if (st->vref)
+			regulator_disable(st->vref);
 		regulator_disable(st->reg);
 		return ret;
 	}
@@ -915,7 +939,7 @@ static int __maybe_unused ad799x_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(ad799x_pm_ops, ad799x_suspend, ad799x_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ad799x_pm_ops, ad799x_suspend, ad799x_resume);
 
 static const struct i2c_device_id ad799x_id[] = {
 	{ "ad7991", ad7991 },
@@ -934,7 +958,7 @@ MODULE_DEVICE_TABLE(i2c, ad799x_id);
 static struct i2c_driver ad799x_driver = {
 	.driver = {
 		.name = "ad799x",
-		.pm = &ad799x_pm_ops,
+		.pm = pm_sleep_ptr(&ad799x_pm_ops),
 	},
 	.probe = ad799x_probe,
 	.remove = ad799x_remove,
diff --git a/drivers/iio/adc/ad9467.c b/drivers/iio/adc/ad9467.c
new file mode 100644
index 000000000000..7534572f7475
--- /dev/null
+++ b/drivers/iio/adc/ad9467.c
@@ -0,0 +1,462 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices AD9467 SPI ADC driver
+ *
+ * Copyright 2012-2020 Analog Devices Inc.
+ */
+
+#include <linux/module.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/of_device.h>
+
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#include <linux/clk.h>
+
+#include <linux/iio/adc/adi-axi-adc.h>
+
+/*
+ * ADI High-Speed ADC common spi interface registers
+ * See Application-Note AN-877:
+ *   https://www.analog.com/media/en/technical-documentation/application-notes/AN-877.pdf
+ */
+
+#define AN877_ADC_REG_CHIP_PORT_CONF		0x00
+#define AN877_ADC_REG_CHIP_ID			0x01
+#define AN877_ADC_REG_CHIP_GRADE		0x02
+#define AN877_ADC_REG_CHAN_INDEX		0x05
+#define AN877_ADC_REG_TRANSFER			0xFF
+#define AN877_ADC_REG_MODES			0x08
+#define AN877_ADC_REG_TEST_IO			0x0D
+#define AN877_ADC_REG_ADC_INPUT			0x0F
+#define AN877_ADC_REG_OFFSET			0x10
+#define AN877_ADC_REG_OUTPUT_MODE		0x14
+#define AN877_ADC_REG_OUTPUT_ADJUST		0x15
+#define AN877_ADC_REG_OUTPUT_PHASE		0x16
+#define AN877_ADC_REG_OUTPUT_DELAY		0x17
+#define AN877_ADC_REG_VREF			0x18
+#define AN877_ADC_REG_ANALOG_INPUT		0x2C
+
+/* AN877_ADC_REG_TEST_IO */
+#define AN877_ADC_TESTMODE_OFF			0x0
+#define AN877_ADC_TESTMODE_MIDSCALE_SHORT	0x1
+#define AN877_ADC_TESTMODE_POS_FULLSCALE	0x2
+#define AN877_ADC_TESTMODE_NEG_FULLSCALE	0x3
+#define AN877_ADC_TESTMODE_ALT_CHECKERBOARD	0x4
+#define AN877_ADC_TESTMODE_PN23_SEQ		0x5
+#define AN877_ADC_TESTMODE_PN9_SEQ		0x6
+#define AN877_ADC_TESTMODE_ONE_ZERO_TOGGLE	0x7
+#define AN877_ADC_TESTMODE_USER			0x8
+#define AN877_ADC_TESTMODE_BIT_TOGGLE		0x9
+#define AN877_ADC_TESTMODE_SYNC			0xA
+#define AN877_ADC_TESTMODE_ONE_BIT_HIGH		0xB
+#define AN877_ADC_TESTMODE_MIXED_BIT_FREQUENCY	0xC
+#define AN877_ADC_TESTMODE_RAMP			0xF
+
+/* AN877_ADC_REG_TRANSFER */
+#define AN877_ADC_TRANSFER_SYNC			0x1
+
+/* AN877_ADC_REG_OUTPUT_MODE */
+#define AN877_ADC_OUTPUT_MODE_OFFSET_BINARY	0x0
+#define AN877_ADC_OUTPUT_MODE_TWOS_COMPLEMENT	0x1
+#define AN877_ADC_OUTPUT_MODE_GRAY_CODE		0x2
+
+/* AN877_ADC_REG_OUTPUT_PHASE */
+#define AN877_ADC_OUTPUT_EVEN_ODD_MODE_EN	0x20
+#define AN877_ADC_INVERT_DCO_CLK		0x80
+
+/* AN877_ADC_REG_OUTPUT_DELAY */
+#define AN877_ADC_DCO_DELAY_ENABLE		0x80
+
+/*
+ * Analog Devices AD9265 16-Bit, 125/105/80 MSPS ADC
+ */
+
+#define CHIPID_AD9265			0x64
+#define AD9265_DEF_OUTPUT_MODE		0x40
+#define AD9265_REG_VREF_MASK		0xC0
+
+/*
+ * Analog Devices AD9434 12-Bit, 370/500 MSPS ADC
+ */
+
+#define CHIPID_AD9434			0x6A
+#define AD9434_DEF_OUTPUT_MODE		0x00
+#define AD9434_REG_VREF_MASK		0xC0
+
+/*
+ * Analog Devices AD9467 16-Bit, 200/250 MSPS ADC
+ */
+
+#define CHIPID_AD9467			0x50
+#define AD9467_DEF_OUTPUT_MODE		0x08
+#define AD9467_REG_VREF_MASK		0x0F
+
+enum {
+	ID_AD9265,
+	ID_AD9434,
+	ID_AD9467,
+};
+
+struct ad9467_chip_info {
+	struct adi_axi_adc_chip_info	axi_adc_info;
+	unsigned int			default_output_mode;
+	unsigned int			vref_mask;
+};
+
+#define to_ad9467_chip_info(_info)	\
+	container_of(_info, struct ad9467_chip_info, axi_adc_info)
+
+struct ad9467_state {
+	struct spi_device		*spi;
+	struct clk			*clk;
+	unsigned int			output_mode;
+
+	struct gpio_desc		*pwrdown_gpio;
+	struct gpio_desc		*reset_gpio;
+};
+
+static int ad9467_spi_read(struct spi_device *spi, unsigned int reg)
+{
+	unsigned char tbuf[2], rbuf[1];
+	int ret;
+
+	tbuf[0] = 0x80 | (reg >> 8);
+	tbuf[1] = reg & 0xFF;
+
+	ret = spi_write_then_read(spi,
+				  tbuf, ARRAY_SIZE(tbuf),
+				  rbuf, ARRAY_SIZE(rbuf));
+
+	if (ret < 0)
+		return ret;
+
+	return rbuf[0];
+}
+
+static int ad9467_spi_write(struct spi_device *spi, unsigned int reg,
+			    unsigned int val)
+{
+	unsigned char buf[3];
+
+	buf[0] = reg >> 8;
+	buf[1] = reg & 0xFF;
+	buf[2] = val;
+
+	return spi_write(spi, buf, ARRAY_SIZE(buf));
+}
+
+static int ad9467_reg_access(struct adi_axi_adc_conv *conv, unsigned int reg,
+			     unsigned int writeval, unsigned int *readval)
+{
+	struct ad9467_state *st = adi_axi_adc_conv_priv(conv);
+	struct spi_device *spi = st->spi;
+	int ret;
+
+	if (readval == NULL) {
+		ret = ad9467_spi_write(spi, reg, writeval);
+		ad9467_spi_write(spi, AN877_ADC_REG_TRANSFER,
+				 AN877_ADC_TRANSFER_SYNC);
+		return ret;
+	}
+
+	ret = ad9467_spi_read(spi, reg);
+	if (ret < 0)
+		return ret;
+	*readval = ret;
+
+	return 0;
+}
+
+static const unsigned int ad9265_scale_table[][2] = {
+	{1250, 0x00}, {1500, 0x40}, {1750, 0x80}, {2000, 0xC0},
+};
+
+static const unsigned int ad9434_scale_table[][2] = {
+	{1600, 0x1C}, {1580, 0x1D}, {1550, 0x1E}, {1520, 0x1F}, {1500, 0x00},
+	{1470, 0x01}, {1440, 0x02}, {1420, 0x03}, {1390, 0x04}, {1360, 0x05},
+	{1340, 0x06}, {1310, 0x07}, {1280, 0x08}, {1260, 0x09}, {1230, 0x0A},
+	{1200, 0x0B}, {1180, 0x0C},
+};
+
+static const unsigned int ad9467_scale_table[][2] = {
+	{2000, 0}, {2100, 6}, {2200, 7},
+	{2300, 8}, {2400, 9}, {2500, 10},
+};
+
+static void __ad9467_get_scale(struct adi_axi_adc_conv *conv, int index,
+			       unsigned int *val, unsigned int *val2)
+{
+	const struct adi_axi_adc_chip_info *info = conv->chip_info;
+	const struct iio_chan_spec *chan = &info->channels[0];
+	unsigned int tmp;
+
+	tmp = (info->scale_table[index][0] * 1000000ULL) >>
+			chan->scan_type.realbits;
+	*val = tmp / 1000000;
+	*val2 = tmp % 1000000;
+}
+
+#define AD9467_CHAN(_chan, _si, _bits, _sign)				\
+{									\
+	.type = IIO_VOLTAGE,						\
+	.indexed = 1,							\
+	.channel = _chan,						\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
+		BIT(IIO_CHAN_INFO_SAMP_FREQ),				\
+	.scan_index = _si,						\
+	.scan_type = {							\
+		.sign = _sign,						\
+		.realbits = _bits,					\
+		.storagebits = 16,					\
+	},								\
+}
+
+static const struct iio_chan_spec ad9434_channels[] = {
+	AD9467_CHAN(0, 0, 12, 'S'),
+};
+
+static const struct iio_chan_spec ad9467_channels[] = {
+	AD9467_CHAN(0, 0, 16, 'S'),
+};
+
+static const struct ad9467_chip_info ad9467_chip_tbl[] = {
+	[ID_AD9265] = {
+		.axi_adc_info = {
+			.id = CHIPID_AD9265,
+			.max_rate = 125000000UL,
+			.scale_table = ad9265_scale_table,
+			.num_scales = ARRAY_SIZE(ad9265_scale_table),
+			.channels = ad9467_channels,
+			.num_channels = ARRAY_SIZE(ad9467_channels),
+		},
+		.default_output_mode = AD9265_DEF_OUTPUT_MODE,
+		.vref_mask = AD9265_REG_VREF_MASK,
+	},
+	[ID_AD9434] = {
+		.axi_adc_info = {
+			.id = CHIPID_AD9434,
+			.max_rate = 500000000UL,
+			.scale_table = ad9434_scale_table,
+			.num_scales = ARRAY_SIZE(ad9434_scale_table),
+			.channels = ad9434_channels,
+			.num_channels = ARRAY_SIZE(ad9434_channels),
+		},
+		.default_output_mode = AD9434_DEF_OUTPUT_MODE,
+		.vref_mask = AD9434_REG_VREF_MASK,
+	},
+	[ID_AD9467] = {
+		.axi_adc_info = {
+			.id = CHIPID_AD9467,
+			.max_rate = 250000000UL,
+			.scale_table = ad9467_scale_table,
+			.num_scales = ARRAY_SIZE(ad9467_scale_table),
+			.channels = ad9467_channels,
+			.num_channels = ARRAY_SIZE(ad9467_channels),
+		},
+		.default_output_mode = AD9467_DEF_OUTPUT_MODE,
+		.vref_mask = AD9467_REG_VREF_MASK,
+	},
+};
+
+static int ad9467_get_scale(struct adi_axi_adc_conv *conv, int *val, int *val2)
+{
+	const struct adi_axi_adc_chip_info *info = conv->chip_info;
+	const struct ad9467_chip_info *info1 = to_ad9467_chip_info(info);
+	struct ad9467_state *st = adi_axi_adc_conv_priv(conv);
+	unsigned int i, vref_val;
+
+	vref_val = ad9467_spi_read(st->spi, AN877_ADC_REG_VREF);
+
+	vref_val &= info1->vref_mask;
+
+	for (i = 0; i < info->num_scales; i++) {
+		if (vref_val == info->scale_table[i][1])
+			break;
+	}
+
+	if (i == info->num_scales)
+		return -ERANGE;
+
+	__ad9467_get_scale(conv, i, val, val2);
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int ad9467_set_scale(struct adi_axi_adc_conv *conv, int val, int val2)
+{
+	const struct adi_axi_adc_chip_info *info = conv->chip_info;
+	struct ad9467_state *st = adi_axi_adc_conv_priv(conv);
+	unsigned int scale_val[2];
+	unsigned int i;
+
+	if (val != 0)
+		return -EINVAL;
+
+	for (i = 0; i < info->num_scales; i++) {
+		__ad9467_get_scale(conv, i, &scale_val[0], &scale_val[1]);
+		if (scale_val[0] != val || scale_val[1] != val2)
+			continue;
+
+		ad9467_spi_write(st->spi, AN877_ADC_REG_VREF,
+				 info->scale_table[i][1]);
+		ad9467_spi_write(st->spi, AN877_ADC_REG_TRANSFER,
+				 AN877_ADC_TRANSFER_SYNC);
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int ad9467_read_raw(struct adi_axi_adc_conv *conv,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long m)
+{
+	struct ad9467_state *st = adi_axi_adc_conv_priv(conv);
+
+	switch (m) {
+	case IIO_CHAN_INFO_SCALE:
+		return ad9467_get_scale(conv, val, val2);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = clk_get_rate(st->clk);
+
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad9467_write_raw(struct adi_axi_adc_conv *conv,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
+{
+	const struct adi_axi_adc_chip_info *info = conv->chip_info;
+	struct ad9467_state *st = adi_axi_adc_conv_priv(conv);
+	long r_clk;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return ad9467_set_scale(conv, val, val2);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		r_clk = clk_round_rate(st->clk, val);
+		if (r_clk < 0 || r_clk > info->max_rate) {
+			dev_warn(&st->spi->dev,
+				 "Error setting ADC sample rate %ld", r_clk);
+			return -EINVAL;
+		}
+
+		return clk_set_rate(st->clk, r_clk);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad9467_outputmode_set(struct spi_device *spi, unsigned int mode)
+{
+	int ret;
+
+	ret = ad9467_spi_write(spi, AN877_ADC_REG_OUTPUT_MODE, mode);
+	if (ret < 0)
+		return ret;
+
+	return ad9467_spi_write(spi, AN877_ADC_REG_TRANSFER,
+				AN877_ADC_TRANSFER_SYNC);
+}
+
+static int ad9467_preenable_setup(struct adi_axi_adc_conv *conv)
+{
+	struct ad9467_state *st = adi_axi_adc_conv_priv(conv);
+
+	return ad9467_outputmode_set(st->spi, st->output_mode);
+}
+
+static int ad9467_probe(struct spi_device *spi)
+{
+	const struct ad9467_chip_info *info;
+	struct adi_axi_adc_conv *conv;
+	struct ad9467_state *st;
+	unsigned int id;
+	int ret;
+
+	info = of_device_get_match_data(&spi->dev);
+	if (!info)
+		return -ENODEV;
+
+	conv = devm_adi_axi_adc_conv_register(&spi->dev, sizeof(*st));
+	if (IS_ERR(conv))
+		return PTR_ERR(conv);
+
+	st = adi_axi_adc_conv_priv(conv);
+	st->spi = spi;
+
+	st->clk = devm_clk_get_enabled(&spi->dev, "adc-clk");
+	if (IS_ERR(st->clk))
+		return PTR_ERR(st->clk);
+
+	st->pwrdown_gpio = devm_gpiod_get_optional(&spi->dev, "powerdown",
+						   GPIOD_OUT_LOW);
+	if (IS_ERR(st->pwrdown_gpio))
+		return PTR_ERR(st->pwrdown_gpio);
+
+	st->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset",
+						 GPIOD_OUT_LOW);
+	if (IS_ERR(st->reset_gpio))
+		return PTR_ERR(st->reset_gpio);
+
+	if (st->reset_gpio) {
+		udelay(1);
+		ret = gpiod_direction_output(st->reset_gpio, 1);
+		if (ret)
+			return ret;
+		mdelay(10);
+	}
+
+	conv->chip_info = &info->axi_adc_info;
+
+	id = ad9467_spi_read(spi, AN877_ADC_REG_CHIP_ID);
+	if (id != conv->chip_info->id) {
+		dev_err(&spi->dev, "Mismatch CHIP_ID, got 0x%X, expected 0x%X\n",
+			id, conv->chip_info->id);
+		return -ENODEV;
+	}
+
+	conv->reg_access = ad9467_reg_access;
+	conv->write_raw = ad9467_write_raw;
+	conv->read_raw = ad9467_read_raw;
+	conv->preenable_setup = ad9467_preenable_setup;
+
+	st->output_mode = info->default_output_mode |
+			  AN877_ADC_OUTPUT_MODE_TWOS_COMPLEMENT;
+
+	return 0;
+}
+
+static const struct of_device_id ad9467_of_match[] = {
+	{ .compatible = "adi,ad9265", .data = &ad9467_chip_tbl[ID_AD9265], },
+	{ .compatible = "adi,ad9434", .data = &ad9467_chip_tbl[ID_AD9434], },
+	{ .compatible = "adi,ad9467", .data = &ad9467_chip_tbl[ID_AD9467], },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad9467_of_match);
+
+static struct spi_driver ad9467_driver = {
+	.driver = {
+		.name = "ad9467",
+		.of_match_table = ad9467_of_match,
+	},
+	.probe = ad9467_probe,
+};
+module_spi_driver(ad9467_driver);
+
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD9467 ADC driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADI_AXI);
diff --git a/drivers/iio/adc/ad_sigma_delta.c b/drivers/iio/adc/ad_sigma_delta.c
index 8115b6de1d6c..261a9a6b45e1 100644
--- a/drivers/iio/adc/ad_sigma_delta.c
+++ b/drivers/iio/adc/ad_sigma_delta.c
@@ -6,6 +6,7 @@
  *  Author: Lars-Peter Clausen <lars@metafoo.de>
  */
 
+#include <linux/align.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
@@ -42,7 +43,7 @@ void ad_sd_set_comm(struct ad_sigma_delta *sigma_delta, uint8_t comm)
 	 * to select the channel */
 	sigma_delta->comm = comm & AD_SD_COMM_CHAN_MASK;
 }
-EXPORT_SYMBOL_GPL(ad_sd_set_comm);
+EXPORT_SYMBOL_NS_GPL(ad_sd_set_comm, IIO_AD_SIGMA_DELTA);
 
 /**
  * ad_sd_write_reg() - Write a register
@@ -57,7 +58,7 @@ EXPORT_SYMBOL_GPL(ad_sd_set_comm);
 int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
 	unsigned int size, unsigned int val)
 {
-	uint8_t *data = sigma_delta->data;
+	uint8_t *data = sigma_delta->tx_buf;
 	struct spi_transfer t = {
 		.tx_buf		= data,
 		.len		= size + 1,
@@ -70,9 +71,7 @@ int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
 
 	switch (size) {
 	case 3:
-		data[1] = val >> 16;
-		data[2] = val >> 8;
-		data[3] = val;
+		put_unaligned_be24(val, &data[1]);
 		break;
 	case 2:
 		put_unaligned_be16(val, &data[1]);
@@ -96,12 +95,12 @@ int ad_sd_write_reg(struct ad_sigma_delta *sigma_delta, unsigned int reg,
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ad_sd_write_reg);
+EXPORT_SYMBOL_NS_GPL(ad_sd_write_reg, IIO_AD_SIGMA_DELTA);
 
 static int ad_sd_read_reg_raw(struct ad_sigma_delta *sigma_delta,
 	unsigned int reg, unsigned int size, uint8_t *val)
 {
-	uint8_t *data = sigma_delta->data;
+	uint8_t *data = sigma_delta->tx_buf;
 	int ret;
 	struct spi_transfer t[] = {
 		{
@@ -148,24 +147,22 @@ int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta,
 {
 	int ret;
 
-	ret = ad_sd_read_reg_raw(sigma_delta, reg, size, sigma_delta->data);
+	ret = ad_sd_read_reg_raw(sigma_delta, reg, size, sigma_delta->rx_buf);
 	if (ret < 0)
 		goto out;
 
 	switch (size) {
 	case 4:
-		*val = get_unaligned_be32(sigma_delta->data);
+		*val = get_unaligned_be32(sigma_delta->rx_buf);
 		break;
 	case 3:
-		*val = (sigma_delta->data[0] << 16) |
-			(sigma_delta->data[1] << 8) |
-			sigma_delta->data[2];
+		*val = get_unaligned_be24(sigma_delta->rx_buf);
 		break;
 	case 2:
-		*val = get_unaligned_be16(sigma_delta->data);
+		*val = get_unaligned_be16(sigma_delta->rx_buf);
 		break;
 	case 1:
-		*val = sigma_delta->data[0];
+		*val = sigma_delta->rx_buf[0];
 		break;
 	default:
 		ret = -EINVAL;
@@ -175,7 +172,7 @@ int ad_sd_read_reg(struct ad_sigma_delta *sigma_delta,
 out:
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ad_sd_read_reg);
+EXPORT_SYMBOL_NS_GPL(ad_sd_read_reg, IIO_AD_SIGMA_DELTA);
 
 /**
  * ad_sd_reset() - Reset the serial interface
@@ -203,7 +200,7 @@ int ad_sd_reset(struct ad_sigma_delta *sigma_delta,
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ad_sd_reset);
+EXPORT_SYMBOL_NS_GPL(ad_sd_reset, IIO_AD_SIGMA_DELTA);
 
 int ad_sd_calibrate(struct ad_sigma_delta *sigma_delta,
 	unsigned int mode, unsigned int channel)
@@ -242,7 +239,7 @@ out:
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ad_sd_calibrate);
+EXPORT_SYMBOL_NS_GPL(ad_sd_calibrate, IIO_AD_SIGMA_DELTA);
 
 /**
  * ad_sd_calibrate_all() - Performs channel calibration
@@ -266,7 +263,7 @@ int ad_sd_calibrate_all(struct ad_sigma_delta *sigma_delta,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(ad_sd_calibrate_all);
+EXPORT_SYMBOL_NS_GPL(ad_sd_calibrate_all, IIO_AD_SIGMA_DELTA);
 
 /**
  * ad_sigma_delta_single_conversion() - Performs a single data conversion
@@ -341,24 +338,54 @@ out:
 
 	return IIO_VAL_INT;
 }
-EXPORT_SYMBOL_GPL(ad_sigma_delta_single_conversion);
+EXPORT_SYMBOL_NS_GPL(ad_sigma_delta_single_conversion, IIO_AD_SIGMA_DELTA);
 
 static int ad_sd_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
+	unsigned int i, slot, samples_buf_size;
 	unsigned int channel;
+	uint8_t *samples_buf;
 	int ret;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret < 0)
-		return ret;
+	if (sigma_delta->num_slots == 1) {
+		channel = find_first_bit(indio_dev->active_scan_mask,
+					 indio_dev->masklength);
+		ret = ad_sigma_delta_set_channel(sigma_delta,
+						 indio_dev->channels[channel].address);
+		if (ret)
+			return ret;
+		slot = 1;
+	} else {
+		/*
+		 * At this point update_scan_mode already enabled the required channels.
+		 * For sigma-delta sequencer drivers with multiple slots, an update_scan_mode
+		 * implementation is mandatory.
+		 */
+		slot = 0;
+		for_each_set_bit(i, indio_dev->active_scan_mask, indio_dev->masklength) {
+			sigma_delta->slots[slot] = indio_dev->channels[i].address;
+			slot++;
+		}
+	}
 
-	channel = find_first_bit(indio_dev->active_scan_mask,
-				 indio_dev->masklength);
-	ret = ad_sigma_delta_set_channel(sigma_delta,
-		indio_dev->channels[channel].address);
-	if (ret)
-		return ret;
+	sigma_delta->active_slots = slot;
+	sigma_delta->current_slot = 0;
+
+	if (sigma_delta->active_slots > 1) {
+		ret = ad_sigma_delta_append_status(sigma_delta, true);
+		if (ret)
+			return ret;
+	}
+
+	samples_buf_size = ALIGN(slot * indio_dev->channels[0].scan_type.storagebits, 8);
+	samples_buf_size += sizeof(int64_t);
+	samples_buf = devm_krealloc(&sigma_delta->spi->dev, sigma_delta->samples_buf,
+				    samples_buf_size, GFP_KERNEL);
+	if (!samples_buf)
+		return -ENOMEM;
+
+	sigma_delta->samples_buf = samples_buf;
 
 	spi_bus_lock(sigma_delta->spi->master);
 	sigma_delta->bus_locked = true;
@@ -394,6 +421,10 @@ static int ad_sd_buffer_postdisable(struct iio_dev *indio_dev)
 	sigma_delta->keep_cs_asserted = false;
 	ad_sigma_delta_set_mode(sigma_delta, AD_SD_MODE_IDLE);
 
+	if (sigma_delta->status_appended)
+		ad_sigma_delta_append_status(sigma_delta, false);
+
+	ad_sigma_delta_disable_all(sigma_delta);
 	sigma_delta->bus_locked = false;
 	return spi_bus_unlock(sigma_delta->spi->master);
 }
@@ -403,12 +434,13 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
+	uint8_t *data = sigma_delta->rx_buf;
+	unsigned int transfer_size;
+	unsigned int sample_size;
+	unsigned int sample_pos;
+	unsigned int status_pos;
 	unsigned int reg_size;
 	unsigned int data_reg;
-	uint8_t data[16];
-	int ret;
-
-	memset(data, 0x00, 16);
 
 	reg_size = indio_dev->channels[0].scan_type.realbits +
 			indio_dev->channels[0].scan_type.shift;
@@ -419,23 +451,69 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
 	else
 		data_reg = AD_SD_REG_DATA;
 
+	/* Status word will be appended to the sample during transfer */
+	if (sigma_delta->status_appended)
+		transfer_size = reg_size + 1;
+	else
+		transfer_size = reg_size;
+
 	switch (reg_size) {
 	case 4:
 	case 2:
 	case 1:
-		ret = ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size,
-			&data[0]);
+		status_pos = reg_size;
+		ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[0]);
 		break;
 	case 3:
+		/*
+		 * Data array after transfer will look like (if status is appended):
+		 * data[] = { [0][sample][sample][sample][status] }
+		 * Keeping the first byte 0 shifts the status postion by 1 byte to the right.
+		 */
+		status_pos = reg_size + 1;
+
 		/* We store 24 bit samples in a 32 bit word. Keep the upper
 		 * byte set to zero. */
-		ret = ad_sd_read_reg_raw(sigma_delta, data_reg, reg_size,
-			&data[1]);
+		ad_sd_read_reg_raw(sigma_delta, data_reg, transfer_size, &data[1]);
 		break;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data, pf->timestamp);
+	/*
+	 * For devices sampling only one channel at
+	 * once, there is no need for sample number tracking.
+	 */
+	if (sigma_delta->active_slots == 1) {
+		iio_push_to_buffers_with_timestamp(indio_dev, data, pf->timestamp);
+		goto irq_handled;
+	}
+
+	if (sigma_delta->status_appended) {
+		u8 converted_channel;
+
+		converted_channel = data[status_pos] & sigma_delta->info->status_ch_mask;
+		if (converted_channel != sigma_delta->slots[sigma_delta->current_slot]) {
+			/*
+			 * Desync occurred during continuous sampling of multiple channels.
+			 * Drop this incomplete sample and start from first channel again.
+			 */
+
+			sigma_delta->current_slot = 0;
+			goto irq_handled;
+		}
+	}
+
+	sample_size = indio_dev->channels[0].scan_type.storagebits / 8;
+	sample_pos = sample_size * sigma_delta->current_slot;
+	memcpy(&sigma_delta->samples_buf[sample_pos], data, sample_size);
+	sigma_delta->current_slot++;
 
+	if (sigma_delta->current_slot == sigma_delta->active_slots) {
+		sigma_delta->current_slot = 0;
+		iio_push_to_buffers_with_timestamp(indio_dev, sigma_delta->samples_buf,
+						   pf->timestamp);
+	}
+
+irq_handled:
 	iio_trigger_notify_done(indio_dev->trig);
 	sigma_delta->irq_dis = false;
 	enable_irq(sigma_delta->spi->irq);
@@ -443,11 +521,17 @@ static irqreturn_t ad_sd_trigger_handler(int irq, void *p)
 	return IRQ_HANDLED;
 }
 
+static bool ad_sd_validate_scan_mask(struct iio_dev *indio_dev, const unsigned long *mask)
+{
+	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
+
+	return bitmap_weight(mask, indio_dev->masklength) <= sigma_delta->num_slots;
+}
+
 static const struct iio_buffer_setup_ops ad_sd_buffer_setup_ops = {
 	.postenable = &ad_sd_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
 	.postdisable = &ad_sd_buffer_postdisable,
-	.validate_scan_mask = &iio_validate_scan_mask_onehot,
+	.validate_scan_mask = &ad_sd_validate_scan_mask,
 };
 
 static irqreturn_t ad_sd_data_rdy_trig_poll(int irq, void *private)
@@ -479,99 +563,72 @@ int ad_sd_validate_trigger(struct iio_dev *indio_dev, struct iio_trigger *trig)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(ad_sd_validate_trigger);
-
-static const struct iio_trigger_ops ad_sd_trigger_ops = {
-};
+EXPORT_SYMBOL_NS_GPL(ad_sd_validate_trigger, IIO_AD_SIGMA_DELTA);
 
-static int ad_sd_probe_trigger(struct iio_dev *indio_dev)
+static int devm_ad_sd_probe_trigger(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
 	int ret;
 
-	sigma_delta->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
-						indio_dev->id);
-	if (sigma_delta->trig == NULL) {
-		ret = -ENOMEM;
-		goto error_ret;
+	if (dev != &sigma_delta->spi->dev) {
+		dev_err(dev, "Trigger parent should be '%s', got '%s'\n",
+			dev_name(dev), dev_name(&sigma_delta->spi->dev));
+		return -EFAULT;
 	}
-	sigma_delta->trig->ops = &ad_sd_trigger_ops;
+
+	sigma_delta->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
+						   iio_device_id(indio_dev));
+	if (sigma_delta->trig == NULL)
+		return -ENOMEM;
+
 	init_completion(&sigma_delta->completion);
 
-	ret = request_irq(sigma_delta->spi->irq,
-			  ad_sd_data_rdy_trig_poll,
-			  sigma_delta->info->irq_flags,
-			  indio_dev->name,
-			  sigma_delta);
+	sigma_delta->irq_dis = true;
+	ret = devm_request_irq(dev, sigma_delta->spi->irq,
+			       ad_sd_data_rdy_trig_poll,
+			       sigma_delta->info->irq_flags | IRQF_NO_AUTOEN,
+			       indio_dev->name,
+			       sigma_delta);
 	if (ret)
-		goto error_free_trig;
+		return ret;
 
-	if (!sigma_delta->irq_dis) {
-		sigma_delta->irq_dis = true;
-		disable_irq_nosync(sigma_delta->spi->irq);
-	}
-	sigma_delta->trig->dev.parent = &sigma_delta->spi->dev;
 	iio_trigger_set_drvdata(sigma_delta->trig, sigma_delta);
 
-	ret = iio_trigger_register(sigma_delta->trig);
+	ret = devm_iio_trigger_register(dev, sigma_delta->trig);
 	if (ret)
-		goto error_free_irq;
+		return ret;
 
 	/* select default trigger */
 	indio_dev->trig = iio_trigger_get(sigma_delta->trig);
 
 	return 0;
-
-error_free_irq:
-	free_irq(sigma_delta->spi->irq, sigma_delta);
-error_free_trig:
-	iio_trigger_free(sigma_delta->trig);
-error_ret:
-	return ret;
-}
-
-static void ad_sd_remove_trigger(struct iio_dev *indio_dev)
-{
-	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
-
-	iio_trigger_unregister(sigma_delta->trig);
-	free_irq(sigma_delta->spi->irq, sigma_delta);
-	iio_trigger_free(sigma_delta->trig);
 }
 
 /**
- * ad_sd_setup_buffer_and_trigger() -
+ * devm_ad_sd_setup_buffer_and_trigger() - Device-managed buffer & trigger setup
+ * @dev: Device object to which to bind the life-time of the resources attached
  * @indio_dev: The IIO device
  */
-int ad_sd_setup_buffer_and_trigger(struct iio_dev *indio_dev)
+int devm_ad_sd_setup_buffer_and_trigger(struct device *dev, struct iio_dev *indio_dev)
 {
+	struct ad_sigma_delta *sigma_delta = iio_device_get_drvdata(indio_dev);
 	int ret;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-			&ad_sd_trigger_handler, &ad_sd_buffer_setup_ops);
+	sigma_delta->slots = devm_kcalloc(dev, sigma_delta->num_slots,
+					  sizeof(*sigma_delta->slots), GFP_KERNEL);
+	if (!sigma_delta->slots)
+		return -ENOMEM;
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      &ad_sd_trigger_handler,
+					      &ad_sd_buffer_setup_ops);
 	if (ret)
 		return ret;
 
-	ret = ad_sd_probe_trigger(indio_dev);
-	if (ret) {
-		iio_triggered_buffer_cleanup(indio_dev);
-		return ret;
-	}
-
-	return 0;
+	return devm_ad_sd_probe_trigger(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(ad_sd_setup_buffer_and_trigger);
-
-/**
- * ad_sd_cleanup_buffer_and_trigger() -
- * @indio_dev: The IIO device
- */
-void ad_sd_cleanup_buffer_and_trigger(struct iio_dev *indio_dev)
-{
-	ad_sd_remove_trigger(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-}
-EXPORT_SYMBOL_GPL(ad_sd_cleanup_buffer_and_trigger);
+EXPORT_SYMBOL_NS_GPL(devm_ad_sd_setup_buffer_and_trigger, IIO_AD_SIGMA_DELTA);
 
 /**
  * ad_sd_init() - Initializes a ad_sigma_delta struct
@@ -588,11 +645,30 @@ int ad_sd_init(struct ad_sigma_delta *sigma_delta, struct iio_dev *indio_dev,
 {
 	sigma_delta->spi = spi;
 	sigma_delta->info = info;
+
+	/* If the field is unset in ad_sigma_delta_info, asume there can only be 1 slot. */
+	if (!info->num_slots)
+		sigma_delta->num_slots = 1;
+	else
+		sigma_delta->num_slots = info->num_slots;
+
+	if (sigma_delta->num_slots > 1) {
+		if (!indio_dev->info->update_scan_mode) {
+			dev_err(&spi->dev, "iio_dev lacks update_scan_mode().\n");
+			return -EINVAL;
+		}
+
+		if (!info->disable_all) {
+			dev_err(&spi->dev, "ad_sigma_delta_info lacks disable_all().\n");
+			return -EINVAL;
+		}
+	}
+
 	iio_device_set_drvdata(indio_dev, sigma_delta);
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(ad_sd_init);
+EXPORT_SYMBOL_NS_GPL(ad_sd_init, IIO_AD_SIGMA_DELTA);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("Analog Devices Sigma-Delta ADCs");
diff --git a/drivers/iio/adc/adi-axi-adc.c b/drivers/iio/adc/adi-axi-adc.c
new file mode 100644
index 000000000000..e8a8ea4140f1
--- /dev/null
+++ b/drivers/iio/adc/adi-axi-adc.c
@@ -0,0 +1,473 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices Generic AXI ADC IP core
+ * Link: https://wiki.analog.com/resources/fpga/docs/axi_adc_ip
+ *
+ * Copyright 2012-2020 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/of_device.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/buffer-dmaengine.h>
+
+#include <linux/fpga/adi-axi-common.h>
+#include <linux/iio/adc/adi-axi-adc.h>
+
+/*
+ * Register definitions:
+ *   https://wiki.analog.com/resources/fpga/docs/axi_adc_ip#register_map
+ */
+
+/* ADC controls */
+
+#define ADI_AXI_REG_RSTN			0x0040
+#define   ADI_AXI_REG_RSTN_CE_N			BIT(2)
+#define   ADI_AXI_REG_RSTN_MMCM_RSTN		BIT(1)
+#define   ADI_AXI_REG_RSTN_RSTN			BIT(0)
+
+/* ADC Channel controls */
+
+#define ADI_AXI_REG_CHAN_CTRL(c)		(0x0400 + (c) * 0x40)
+#define   ADI_AXI_REG_CHAN_CTRL_LB_OWR		BIT(11)
+#define   ADI_AXI_REG_CHAN_CTRL_PN_SEL_OWR	BIT(10)
+#define   ADI_AXI_REG_CHAN_CTRL_IQCOR_EN	BIT(9)
+#define   ADI_AXI_REG_CHAN_CTRL_DCFILT_EN	BIT(8)
+#define   ADI_AXI_REG_CHAN_CTRL_FMT_SIGNEXT	BIT(6)
+#define   ADI_AXI_REG_CHAN_CTRL_FMT_TYPE	BIT(5)
+#define   ADI_AXI_REG_CHAN_CTRL_FMT_EN		BIT(4)
+#define   ADI_AXI_REG_CHAN_CTRL_PN_TYPE_OWR	BIT(1)
+#define   ADI_AXI_REG_CHAN_CTRL_ENABLE		BIT(0)
+
+#define ADI_AXI_REG_CHAN_CTRL_DEFAULTS		\
+	(ADI_AXI_REG_CHAN_CTRL_FMT_SIGNEXT |	\
+	 ADI_AXI_REG_CHAN_CTRL_FMT_EN |		\
+	 ADI_AXI_REG_CHAN_CTRL_ENABLE)
+
+struct adi_axi_adc_core_info {
+	unsigned int				version;
+};
+
+struct adi_axi_adc_state {
+	struct mutex				lock;
+
+	struct adi_axi_adc_client		*client;
+	void __iomem				*regs;
+};
+
+struct adi_axi_adc_client {
+	struct list_head			entry;
+	struct adi_axi_adc_conv			conv;
+	struct adi_axi_adc_state		*state;
+	struct device				*dev;
+	const struct adi_axi_adc_core_info	*info;
+};
+
+static LIST_HEAD(registered_clients);
+static DEFINE_MUTEX(registered_clients_lock);
+
+static struct adi_axi_adc_client *conv_to_client(struct adi_axi_adc_conv *conv)
+{
+	return container_of(conv, struct adi_axi_adc_client, conv);
+}
+
+void *adi_axi_adc_conv_priv(struct adi_axi_adc_conv *conv)
+{
+	struct adi_axi_adc_client *cl = conv_to_client(conv);
+
+	return (char *)cl + ALIGN(sizeof(struct adi_axi_adc_client),
+				  IIO_DMA_MINALIGN);
+}
+EXPORT_SYMBOL_NS_GPL(adi_axi_adc_conv_priv, IIO_ADI_AXI);
+
+static void adi_axi_adc_write(struct adi_axi_adc_state *st,
+			      unsigned int reg,
+			      unsigned int val)
+{
+	iowrite32(val, st->regs + reg);
+}
+
+static unsigned int adi_axi_adc_read(struct adi_axi_adc_state *st,
+				     unsigned int reg)
+{
+	return ioread32(st->regs + reg);
+}
+
+static int adi_axi_adc_config_dma_buffer(struct device *dev,
+					 struct iio_dev *indio_dev)
+{
+	const char *dma_name;
+
+	if (!device_property_present(dev, "dmas"))
+		return 0;
+
+	if (device_property_read_string(dev, "dma-names", &dma_name))
+		dma_name = "rx";
+
+	return devm_iio_dmaengine_buffer_setup(indio_dev->dev.parent,
+					       indio_dev, dma_name);
+}
+
+static int adi_axi_adc_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2, long mask)
+{
+	struct adi_axi_adc_state *st = iio_priv(indio_dev);
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+
+	if (!conv->read_raw)
+		return -EOPNOTSUPP;
+
+	return conv->read_raw(conv, chan, val, val2, mask);
+}
+
+static int adi_axi_adc_write_raw(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan,
+				 int val, int val2, long mask)
+{
+	struct adi_axi_adc_state *st = iio_priv(indio_dev);
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+
+	if (!conv->write_raw)
+		return -EOPNOTSUPP;
+
+	return conv->write_raw(conv, chan, val, val2, mask);
+}
+
+static int adi_axi_adc_update_scan_mode(struct iio_dev *indio_dev,
+					const unsigned long *scan_mask)
+{
+	struct adi_axi_adc_state *st = iio_priv(indio_dev);
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+	unsigned int i, ctrl;
+
+	for (i = 0; i < conv->chip_info->num_channels; i++) {
+		ctrl = adi_axi_adc_read(st, ADI_AXI_REG_CHAN_CTRL(i));
+
+		if (test_bit(i, scan_mask))
+			ctrl |= ADI_AXI_REG_CHAN_CTRL_ENABLE;
+		else
+			ctrl &= ~ADI_AXI_REG_CHAN_CTRL_ENABLE;
+
+		adi_axi_adc_write(st, ADI_AXI_REG_CHAN_CTRL(i), ctrl);
+	}
+
+	return 0;
+}
+
+static struct adi_axi_adc_conv *adi_axi_adc_conv_register(struct device *dev,
+							  size_t sizeof_priv)
+{
+	struct adi_axi_adc_client *cl;
+	size_t alloc_size;
+
+	alloc_size = ALIGN(sizeof(struct adi_axi_adc_client), IIO_DMA_MINALIGN);
+	if (sizeof_priv)
+		alloc_size += ALIGN(sizeof_priv, IIO_DMA_MINALIGN);
+
+	cl = kzalloc(alloc_size, GFP_KERNEL);
+	if (!cl)
+		return ERR_PTR(-ENOMEM);
+
+	mutex_lock(&registered_clients_lock);
+
+	cl->dev = get_device(dev);
+
+	list_add_tail(&cl->entry, &registered_clients);
+
+	mutex_unlock(&registered_clients_lock);
+
+	return &cl->conv;
+}
+
+static void adi_axi_adc_conv_unregister(struct adi_axi_adc_conv *conv)
+{
+	struct adi_axi_adc_client *cl = conv_to_client(conv);
+
+	mutex_lock(&registered_clients_lock);
+
+	list_del(&cl->entry);
+	put_device(cl->dev);
+
+	mutex_unlock(&registered_clients_lock);
+
+	kfree(cl);
+}
+
+static void devm_adi_axi_adc_conv_release(void *conv)
+{
+	adi_axi_adc_conv_unregister(conv);
+}
+
+struct adi_axi_adc_conv *devm_adi_axi_adc_conv_register(struct device *dev,
+							size_t sizeof_priv)
+{
+	struct adi_axi_adc_conv *conv;
+	int ret;
+
+	conv = adi_axi_adc_conv_register(dev, sizeof_priv);
+	if (IS_ERR(conv))
+		return conv;
+
+	ret = devm_add_action_or_reset(dev, devm_adi_axi_adc_conv_release,
+				       conv);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return conv;
+}
+EXPORT_SYMBOL_NS_GPL(devm_adi_axi_adc_conv_register, IIO_ADI_AXI);
+
+static ssize_t in_voltage_scale_available_show(struct device *dev,
+					       struct device_attribute *attr,
+					       char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct adi_axi_adc_state *st = iio_priv(indio_dev);
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+	size_t len = 0;
+	int i;
+
+	for (i = 0; i < conv->chip_info->num_scales; i++) {
+		const unsigned int *s = conv->chip_info->scale_table[i];
+
+		len += scnprintf(buf + len, PAGE_SIZE - len,
+				 "%u.%06u ", s[0], s[1]);
+	}
+	buf[len - 1] = '\n';
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR_RO(in_voltage_scale_available, 0);
+
+enum {
+	ADI_AXI_ATTR_SCALE_AVAIL,
+};
+
+#define ADI_AXI_ATTR(_en_, _file_)			\
+	[ADI_AXI_ATTR_##_en_] = &iio_dev_attr_##_file_.dev_attr.attr
+
+static struct attribute *adi_axi_adc_attributes[] = {
+	ADI_AXI_ATTR(SCALE_AVAIL, in_voltage_scale_available),
+	NULL
+};
+
+static umode_t axi_adc_attr_is_visible(struct kobject *kobj,
+				       struct attribute *attr, int n)
+{
+	struct device *dev = kobj_to_dev(kobj);
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct adi_axi_adc_state *st = iio_priv(indio_dev);
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+
+	switch (n) {
+	case ADI_AXI_ATTR_SCALE_AVAIL:
+		if (!conv->chip_info->num_scales)
+			return 0;
+		return attr->mode;
+	default:
+		return attr->mode;
+	}
+}
+
+static const struct attribute_group adi_axi_adc_attribute_group = {
+	.attrs = adi_axi_adc_attributes,
+	.is_visible = axi_adc_attr_is_visible,
+};
+
+static const struct iio_info adi_axi_adc_info = {
+	.read_raw = &adi_axi_adc_read_raw,
+	.write_raw = &adi_axi_adc_write_raw,
+	.attrs = &adi_axi_adc_attribute_group,
+	.update_scan_mode = &adi_axi_adc_update_scan_mode,
+};
+
+static const struct adi_axi_adc_core_info adi_axi_adc_10_0_a_info = {
+	.version = ADI_AXI_PCORE_VER(10, 0, 'a'),
+};
+
+static struct adi_axi_adc_client *adi_axi_adc_attach_client(struct device *dev)
+{
+	const struct adi_axi_adc_core_info *info;
+	struct adi_axi_adc_client *cl;
+	struct device_node *cln;
+
+	info = of_device_get_match_data(dev);
+	if (!info)
+		return ERR_PTR(-ENODEV);
+
+	cln = of_parse_phandle(dev->of_node, "adi,adc-dev", 0);
+	if (!cln) {
+		dev_err(dev, "No 'adi,adc-dev' node defined\n");
+		return ERR_PTR(-ENODEV);
+	}
+
+	mutex_lock(&registered_clients_lock);
+
+	list_for_each_entry(cl, &registered_clients, entry) {
+		if (!cl->dev)
+			continue;
+
+		if (cl->dev->of_node != cln)
+			continue;
+
+		if (!try_module_get(cl->dev->driver->owner)) {
+			mutex_unlock(&registered_clients_lock);
+			of_node_put(cln);
+			return ERR_PTR(-ENODEV);
+		}
+
+		get_device(cl->dev);
+		cl->info = info;
+		mutex_unlock(&registered_clients_lock);
+		of_node_put(cln);
+		return cl;
+	}
+
+	mutex_unlock(&registered_clients_lock);
+	of_node_put(cln);
+
+	return ERR_PTR(-EPROBE_DEFER);
+}
+
+static int adi_axi_adc_setup_channels(struct device *dev,
+				      struct adi_axi_adc_state *st)
+{
+	struct adi_axi_adc_conv *conv = &st->client->conv;
+	int i, ret;
+
+	if (conv->preenable_setup) {
+		ret = conv->preenable_setup(conv);
+		if (ret)
+			return ret;
+	}
+
+	for (i = 0; i < conv->chip_info->num_channels; i++) {
+		adi_axi_adc_write(st, ADI_AXI_REG_CHAN_CTRL(i),
+				  ADI_AXI_REG_CHAN_CTRL_DEFAULTS);
+	}
+
+	return 0;
+}
+
+static void axi_adc_reset(struct adi_axi_adc_state *st)
+{
+	adi_axi_adc_write(st, ADI_AXI_REG_RSTN, 0);
+	mdelay(10);
+	adi_axi_adc_write(st, ADI_AXI_REG_RSTN, ADI_AXI_REG_RSTN_MMCM_RSTN);
+	mdelay(10);
+	adi_axi_adc_write(st, ADI_AXI_REG_RSTN,
+			  ADI_AXI_REG_RSTN_RSTN | ADI_AXI_REG_RSTN_MMCM_RSTN);
+}
+
+static void adi_axi_adc_cleanup(void *data)
+{
+	struct adi_axi_adc_client *cl = data;
+
+	put_device(cl->dev);
+	module_put(cl->dev->driver->owner);
+}
+
+static int adi_axi_adc_probe(struct platform_device *pdev)
+{
+	struct adi_axi_adc_conv *conv;
+	struct iio_dev *indio_dev;
+	struct adi_axi_adc_client *cl;
+	struct adi_axi_adc_state *st;
+	unsigned int ver;
+	int ret;
+
+	cl = adi_axi_adc_attach_client(&pdev->dev);
+	if (IS_ERR(cl))
+		return PTR_ERR(cl);
+
+	ret = devm_add_action_or_reset(&pdev->dev, adi_axi_adc_cleanup, cl);
+	if (ret)
+		return ret;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
+	if (indio_dev == NULL)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	st->client = cl;
+	cl->state = st;
+	mutex_init(&st->lock);
+
+	st->regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(st->regs))
+		return PTR_ERR(st->regs);
+
+	conv = &st->client->conv;
+
+	axi_adc_reset(st);
+
+	ver = adi_axi_adc_read(st, ADI_AXI_REG_VERSION);
+
+	if (cl->info->version > ver) {
+		dev_err(&pdev->dev,
+			"IP core version is too old. Expected %d.%.2d.%c, Reported %d.%.2d.%c\n",
+			ADI_AXI_PCORE_VER_MAJOR(cl->info->version),
+			ADI_AXI_PCORE_VER_MINOR(cl->info->version),
+			ADI_AXI_PCORE_VER_PATCH(cl->info->version),
+			ADI_AXI_PCORE_VER_MAJOR(ver),
+			ADI_AXI_PCORE_VER_MINOR(ver),
+			ADI_AXI_PCORE_VER_PATCH(ver));
+		return -ENODEV;
+	}
+
+	indio_dev->info = &adi_axi_adc_info;
+	indio_dev->name = "adi-axi-adc";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->num_channels = conv->chip_info->num_channels;
+	indio_dev->channels = conv->chip_info->channels;
+
+	ret = adi_axi_adc_config_dma_buffer(&pdev->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	ret = adi_axi_adc_setup_channels(&pdev->dev, st);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_device_register(&pdev->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	dev_info(&pdev->dev, "AXI ADC IP core (%d.%.2d.%c) probed\n",
+		 ADI_AXI_PCORE_VER_MAJOR(ver),
+		 ADI_AXI_PCORE_VER_MINOR(ver),
+		 ADI_AXI_PCORE_VER_PATCH(ver));
+
+	return 0;
+}
+
+/* Match table for of_platform binding */
+static const struct of_device_id adi_axi_adc_of_match[] = {
+	{ .compatible = "adi,axi-adc-10.0.a", .data = &adi_axi_adc_10_0_a_info },
+	{ /* end of list */ }
+};
+MODULE_DEVICE_TABLE(of, adi_axi_adc_of_match);
+
+static struct platform_driver adi_axi_adc_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = adi_axi_adc_of_match,
+	},
+	.probe = adi_axi_adc_probe,
+};
+module_platform_driver(adi_axi_adc_driver);
+
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
+MODULE_DESCRIPTION("Analog Devices Generic AXI ADC IP core driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/aspeed_adc.c b/drivers/iio/adc/aspeed_adc.c
index 1e5375235cfe..9341e0e0eb55 100644
--- a/drivers/iio/adc/aspeed_adc.c
+++ b/drivers/iio/adc/aspeed_adc.c
@@ -1,8 +1,15 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Aspeed AST2400/2500 ADC
+ * Aspeed AST2400/2500/2600 ADC
  *
  * Copyright (C) 2017 Google, Inc.
+ * Copyright (C) 2021 Aspeed Technology Inc.
+ *
+ * ADC clock formula:
+ * Ast2400/Ast2500:
+ * clock period = period of PCLK * 2 * (ADC0C[31:17] + 1) * (ADC0C[9:0] + 1)
+ * Ast2600:
+ * clock period = period of PCLK * 2 * (ADC0C[15:0] + 1)
  */
 
 #include <linux/clk.h>
@@ -13,9 +20,13 @@
 #include <linux/module.h>
 #include <linux/of_platform.h>
 #include <linux/platform_device.h>
+#include <linux/regulator/consumer.h>
 #include <linux/reset.h>
 #include <linux/spinlock.h>
 #include <linux/types.h>
+#include <linux/bitfield.h>
+#include <linux/regmap.h>
+#include <linux/mfd/syscon.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/driver.h>
@@ -28,34 +39,87 @@
 #define ASPEED_REG_INTERRUPT_CONTROL	0x04
 #define ASPEED_REG_VGA_DETECT_CONTROL	0x08
 #define ASPEED_REG_CLOCK_CONTROL	0x0C
-#define ASPEED_REG_MAX			0xC0
-
-#define ASPEED_OPERATION_MODE_POWER_DOWN	(0x0 << 1)
-#define ASPEED_OPERATION_MODE_STANDBY		(0x1 << 1)
-#define ASPEED_OPERATION_MODE_NORMAL		(0x7 << 1)
-
-#define ASPEED_ENGINE_ENABLE		BIT(0)
-
-#define ASPEED_ADC_CTRL_INIT_RDY	BIT(8)
+#define ASPEED_REG_COMPENSATION_TRIM	0xC4
+/*
+ * The register offset between 0xC8~0xCC can be read and won't affect the
+ * hardware logic in each version of ADC.
+ */
+#define ASPEED_REG_MAX			0xD0
+
+#define ASPEED_ADC_ENGINE_ENABLE		BIT(0)
+#define ASPEED_ADC_OP_MODE			GENMASK(3, 1)
+#define ASPEED_ADC_OP_MODE_PWR_DOWN		0
+#define ASPEED_ADC_OP_MODE_STANDBY		1
+#define ASPEED_ADC_OP_MODE_NORMAL		7
+#define ASPEED_ADC_CTRL_COMPENSATION		BIT(4)
+#define ASPEED_ADC_AUTO_COMPENSATION		BIT(5)
+/*
+ * Bit 6 determines not only the reference voltage range but also the dividing
+ * circuit for battery sensing.
+ */
+#define ASPEED_ADC_REF_VOLTAGE			GENMASK(7, 6)
+#define ASPEED_ADC_REF_VOLTAGE_2500mV		0
+#define ASPEED_ADC_REF_VOLTAGE_1200mV		1
+#define ASPEED_ADC_REF_VOLTAGE_EXT_HIGH		2
+#define ASPEED_ADC_REF_VOLTAGE_EXT_LOW		3
+#define ASPEED_ADC_BAT_SENSING_DIV		BIT(6)
+#define ASPEED_ADC_BAT_SENSING_DIV_2_3		0
+#define ASPEED_ADC_BAT_SENSING_DIV_1_3		1
+#define ASPEED_ADC_CTRL_INIT_RDY		BIT(8)
+#define ASPEED_ADC_CH7_MODE			BIT(12)
+#define ASPEED_ADC_CH7_NORMAL			0
+#define ASPEED_ADC_CH7_BAT			1
+#define ASPEED_ADC_BAT_SENSING_ENABLE		BIT(13)
+#define ASPEED_ADC_CTRL_CHANNEL			GENMASK(31, 16)
+#define ASPEED_ADC_CTRL_CHANNEL_ENABLE(ch)	FIELD_PREP(ASPEED_ADC_CTRL_CHANNEL, BIT(ch))
 
 #define ASPEED_ADC_INIT_POLLING_TIME	500
 #define ASPEED_ADC_INIT_TIMEOUT		500000
+/*
+ * When the sampling rate is too high, the ADC may not have enough charging
+ * time, resulting in a low voltage value. Thus, the default uses a slow
+ * sampling rate for most use cases.
+ */
+#define ASPEED_ADC_DEF_SAMPLING_RATE	65000
+
+struct aspeed_adc_trim_locate {
+	const unsigned int offset;
+	const unsigned int field;
+};
 
 struct aspeed_adc_model_data {
 	const char *model_name;
 	unsigned int min_sampling_rate;	// Hz
 	unsigned int max_sampling_rate;	// Hz
-	unsigned int vref_voltage;	// mV
+	unsigned int vref_fixed_mv;
 	bool wait_init_sequence;
+	bool need_prescaler;
+	bool bat_sense_sup;
+	u8 scaler_bit_width;
+	unsigned int num_channels;
+	const struct aspeed_adc_trim_locate *trim_locate;
+};
+
+struct adc_gain {
+	u8 mult;
+	u8 div;
 };
 
 struct aspeed_adc_data {
 	struct device		*dev;
+	const struct aspeed_adc_model_data *model_data;
+	struct regulator	*regulator;
 	void __iomem		*base;
 	spinlock_t		clk_lock;
+	struct clk_hw		*fixed_div_clk;
 	struct clk_hw		*clk_prescaler;
 	struct clk_hw		*clk_scaler;
 	struct reset_control	*rst;
+	int			vref_mv;
+	u32			sample_period_ns;
+	int			cv;
+	bool			battery_sensing;
+	struct adc_gain		battery_mode_gain;
 };
 
 #define ASPEED_CHAN(_idx, _data_reg_addr) {			\
@@ -65,7 +129,8 @@ struct aspeed_adc_data {
 	.address = (_data_reg_addr),				\
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |	\
-				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+				BIT(IIO_CHAN_INFO_SAMP_FREQ) |	\
+				BIT(IIO_CHAN_INFO_OFFSET),	\
 }
 
 static const struct iio_chan_spec aspeed_adc_iio_channels[] = {
@@ -87,21 +152,171 @@ static const struct iio_chan_spec aspeed_adc_iio_channels[] = {
 	ASPEED_CHAN(15, 0x2E),
 };
 
+#define ASPEED_BAT_CHAN(_idx, _data_reg_addr) {					\
+		.type = IIO_VOLTAGE,						\
+		.indexed = 1,							\
+		.channel = (_idx),						\
+		.address = (_data_reg_addr),					\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+				      BIT(IIO_CHAN_INFO_OFFSET),		\
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
+					    BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+}
+static const struct iio_chan_spec aspeed_adc_iio_bat_channels[] = {
+	ASPEED_CHAN(0, 0x10),
+	ASPEED_CHAN(1, 0x12),
+	ASPEED_CHAN(2, 0x14),
+	ASPEED_CHAN(3, 0x16),
+	ASPEED_CHAN(4, 0x18),
+	ASPEED_CHAN(5, 0x1A),
+	ASPEED_CHAN(6, 0x1C),
+	ASPEED_BAT_CHAN(7, 0x1E),
+};
+
+static int aspeed_adc_set_trim_data(struct iio_dev *indio_dev)
+{
+	struct device_node *syscon;
+	struct regmap *scu;
+	u32 scu_otp, trimming_val;
+	struct aspeed_adc_data *data = iio_priv(indio_dev);
+
+	syscon = of_find_node_by_name(NULL, "syscon");
+	if (syscon == NULL) {
+		dev_warn(data->dev, "Couldn't find syscon node\n");
+		return -EOPNOTSUPP;
+	}
+	scu = syscon_node_to_regmap(syscon);
+	of_node_put(syscon);
+	if (IS_ERR(scu)) {
+		dev_warn(data->dev, "Failed to get syscon regmap\n");
+		return -EOPNOTSUPP;
+	}
+	if (data->model_data->trim_locate) {
+		if (regmap_read(scu, data->model_data->trim_locate->offset,
+				&scu_otp)) {
+			dev_warn(data->dev,
+				 "Failed to get adc trimming data\n");
+			trimming_val = 0x8;
+		} else {
+			trimming_val =
+				((scu_otp) &
+				 (data->model_data->trim_locate->field)) >>
+				__ffs(data->model_data->trim_locate->field);
+		}
+		dev_dbg(data->dev,
+			"trimming val = %d, offset = %08x, fields = %08x\n",
+			trimming_val, data->model_data->trim_locate->offset,
+			data->model_data->trim_locate->field);
+		writel(trimming_val, data->base + ASPEED_REG_COMPENSATION_TRIM);
+	}
+	return 0;
+}
+
+static int aspeed_adc_compensation(struct iio_dev *indio_dev)
+{
+	struct aspeed_adc_data *data = iio_priv(indio_dev);
+	u32 index, adc_raw = 0;
+	u32 adc_engine_control_reg_val;
+
+	adc_engine_control_reg_val =
+		readl(data->base + ASPEED_REG_ENGINE_CONTROL);
+	adc_engine_control_reg_val &= ~ASPEED_ADC_OP_MODE;
+	adc_engine_control_reg_val |=
+		(FIELD_PREP(ASPEED_ADC_OP_MODE, ASPEED_ADC_OP_MODE_NORMAL) |
+		 ASPEED_ADC_ENGINE_ENABLE);
+	/*
+	 * Enable compensating sensing:
+	 * After that, the input voltage of ADC will force to half of the reference
+	 * voltage. So the expected reading raw data will become half of the max
+	 * value. We can get compensating value = 0x200 - ADC read raw value.
+	 * It is recommended to average at least 10 samples to get a final CV.
+	 */
+	writel(adc_engine_control_reg_val | ASPEED_ADC_CTRL_COMPENSATION |
+		       ASPEED_ADC_CTRL_CHANNEL_ENABLE(0),
+	       data->base + ASPEED_REG_ENGINE_CONTROL);
+	/*
+	 * After enable compensating sensing mode need to wait some time for ADC stable
+	 * Experiment result is 1ms.
+	 */
+	mdelay(1);
+
+	for (index = 0; index < 16; index++) {
+		/*
+		 * Waiting for the sampling period ensures that the value acquired
+		 * is fresh each time.
+		 */
+		ndelay(data->sample_period_ns);
+		adc_raw += readw(data->base + aspeed_adc_iio_channels[0].address);
+	}
+	adc_raw >>= 4;
+	data->cv = BIT(ASPEED_RESOLUTION_BITS - 1) - adc_raw;
+	writel(adc_engine_control_reg_val,
+	       data->base + ASPEED_REG_ENGINE_CONTROL);
+	dev_dbg(data->dev, "Compensating value = %d\n", data->cv);
+
+	return 0;
+}
+
+static int aspeed_adc_set_sampling_rate(struct iio_dev *indio_dev, u32 rate)
+{
+	struct aspeed_adc_data *data = iio_priv(indio_dev);
+
+	if (rate < data->model_data->min_sampling_rate ||
+	    rate > data->model_data->max_sampling_rate)
+		return -EINVAL;
+	/* Each sampling needs 12 clocks to convert.*/
+	clk_set_rate(data->clk_scaler->clk, rate * ASPEED_CLOCKS_PER_SAMPLE);
+	rate = clk_get_rate(data->clk_scaler->clk);
+	data->sample_period_ns = DIV_ROUND_UP_ULL(
+		(u64)NSEC_PER_SEC * ASPEED_CLOCKS_PER_SAMPLE, rate);
+	dev_dbg(data->dev, "Adc clock = %d sample period = %d ns", rate,
+		data->sample_period_ns);
+
+	return 0;
+}
+
 static int aspeed_adc_read_raw(struct iio_dev *indio_dev,
 			       struct iio_chan_spec const *chan,
 			       int *val, int *val2, long mask)
 {
 	struct aspeed_adc_data *data = iio_priv(indio_dev);
-	const struct aspeed_adc_model_data *model_data =
-			of_device_get_match_data(data->dev);
+	u32 adc_engine_control_reg_val;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		*val = readw(data->base + chan->address);
+		if (data->battery_sensing && chan->channel == 7) {
+			adc_engine_control_reg_val =
+				readl(data->base + ASPEED_REG_ENGINE_CONTROL);
+			writel(adc_engine_control_reg_val |
+				       FIELD_PREP(ASPEED_ADC_CH7_MODE,
+						  ASPEED_ADC_CH7_BAT) |
+				       ASPEED_ADC_BAT_SENSING_ENABLE,
+			       data->base + ASPEED_REG_ENGINE_CONTROL);
+			/*
+			 * After enable battery sensing mode need to wait some time for adc stable
+			 * Experiment result is 1ms.
+			 */
+			mdelay(1);
+			*val = readw(data->base + chan->address);
+			*val = (*val * data->battery_mode_gain.mult) /
+			       data->battery_mode_gain.div;
+			/* Restore control register value */
+			writel(adc_engine_control_reg_val,
+			       data->base + ASPEED_REG_ENGINE_CONTROL);
+		} else
+			*val = readw(data->base + chan->address);
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_OFFSET:
+		if (data->battery_sensing && chan->channel == 7)
+			*val = (data->cv * data->battery_mode_gain.mult) /
+			       data->battery_mode_gain.div;
+		else
+			*val = data->cv;
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_SCALE:
-		*val = model_data->vref_voltage;
+		*val = data->vref_mv;
 		*val2 = ASPEED_RESOLUTION_BITS;
 		return IIO_VAL_FRACTIONAL_LOG2;
 
@@ -119,19 +334,9 @@ static int aspeed_adc_write_raw(struct iio_dev *indio_dev,
 				struct iio_chan_spec const *chan,
 				int val, int val2, long mask)
 {
-	struct aspeed_adc_data *data = iio_priv(indio_dev);
-	const struct aspeed_adc_model_data *model_data =
-			of_device_get_match_data(data->dev);
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (val < model_data->min_sampling_rate ||
-			val > model_data->max_sampling_rate)
-			return -EINVAL;
-
-		clk_set_rate(data->clk_scaler->clk,
-				val * ASPEED_CLOCKS_PER_SAMPLE);
-		return 0;
+		return aspeed_adc_set_sampling_rate(indio_dev, val);
 
 	case IIO_CHAN_INFO_SCALE:
 	case IIO_CHAN_INFO_RAW:
@@ -168,14 +373,119 @@ static const struct iio_info aspeed_adc_iio_info = {
 	.debugfs_reg_access = aspeed_adc_reg_access,
 };
 
+static void aspeed_adc_unregister_fixed_divider(void *data)
+{
+	struct clk_hw *clk = data;
+
+	clk_hw_unregister_fixed_factor(clk);
+}
+
+static void aspeed_adc_reset_assert(void *data)
+{
+	struct reset_control *rst = data;
+
+	reset_control_assert(rst);
+}
+
+static void aspeed_adc_clk_disable_unprepare(void *data)
+{
+	struct clk *clk = data;
+
+	clk_disable_unprepare(clk);
+}
+
+static void aspeed_adc_power_down(void *data)
+{
+	struct aspeed_adc_data *priv_data = data;
+
+	writel(FIELD_PREP(ASPEED_ADC_OP_MODE, ASPEED_ADC_OP_MODE_PWR_DOWN),
+	       priv_data->base + ASPEED_REG_ENGINE_CONTROL);
+}
+
+static void aspeed_adc_reg_disable(void *data)
+{
+	struct regulator *reg = data;
+
+	regulator_disable(reg);
+}
+
+static int aspeed_adc_vref_config(struct iio_dev *indio_dev)
+{
+	struct aspeed_adc_data *data = iio_priv(indio_dev);
+	int ret;
+	u32 adc_engine_control_reg_val;
+
+	if (data->model_data->vref_fixed_mv) {
+		data->vref_mv = data->model_data->vref_fixed_mv;
+		return 0;
+	}
+	adc_engine_control_reg_val =
+		readl(data->base + ASPEED_REG_ENGINE_CONTROL);
+	data->regulator = devm_regulator_get_optional(data->dev, "vref");
+	if (!IS_ERR(data->regulator)) {
+		ret = regulator_enable(data->regulator);
+		if (ret)
+			return ret;
+		ret = devm_add_action_or_reset(
+			data->dev, aspeed_adc_reg_disable, data->regulator);
+		if (ret)
+			return ret;
+		data->vref_mv = regulator_get_voltage(data->regulator);
+		/* Conversion from uV to mV */
+		data->vref_mv /= 1000;
+		if ((data->vref_mv >= 1550) && (data->vref_mv <= 2700))
+			writel(adc_engine_control_reg_val |
+				FIELD_PREP(
+					ASPEED_ADC_REF_VOLTAGE,
+					ASPEED_ADC_REF_VOLTAGE_EXT_HIGH),
+			data->base + ASPEED_REG_ENGINE_CONTROL);
+		else if ((data->vref_mv >= 900) && (data->vref_mv <= 1650))
+			writel(adc_engine_control_reg_val |
+				FIELD_PREP(
+					ASPEED_ADC_REF_VOLTAGE,
+					ASPEED_ADC_REF_VOLTAGE_EXT_LOW),
+			data->base + ASPEED_REG_ENGINE_CONTROL);
+		else {
+			dev_err(data->dev, "Regulator voltage %d not support",
+				data->vref_mv);
+			return -EOPNOTSUPP;
+		}
+	} else {
+		if (PTR_ERR(data->regulator) != -ENODEV)
+			return PTR_ERR(data->regulator);
+		data->vref_mv = 2500000;
+		of_property_read_u32(data->dev->of_node,
+				     "aspeed,int-vref-microvolt",
+				     &data->vref_mv);
+		/* Conversion from uV to mV */
+		data->vref_mv /= 1000;
+		if (data->vref_mv == 2500)
+			writel(adc_engine_control_reg_val |
+				FIELD_PREP(ASPEED_ADC_REF_VOLTAGE,
+						ASPEED_ADC_REF_VOLTAGE_2500mV),
+			data->base + ASPEED_REG_ENGINE_CONTROL);
+		else if (data->vref_mv == 1200)
+			writel(adc_engine_control_reg_val |
+				FIELD_PREP(ASPEED_ADC_REF_VOLTAGE,
+						ASPEED_ADC_REF_VOLTAGE_1200mV),
+			data->base + ASPEED_REG_ENGINE_CONTROL);
+		else {
+			dev_err(data->dev, "Voltage %d not support", data->vref_mv);
+			return -EOPNOTSUPP;
+		}
+	}
+
+	return 0;
+}
+
 static int aspeed_adc_probe(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev;
 	struct aspeed_adc_data *data;
-	const struct aspeed_adc_model_data *model_data;
-	const char *clk_parent_name;
 	int ret;
 	u32 adc_engine_control_reg_val;
+	unsigned long scaler_flags = 0;
+	char clk_name[32], clk_parent_name[32];
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*data));
 	if (!indio_dev)
@@ -183,6 +493,8 @@ static int aspeed_adc_probe(struct platform_device *pdev)
 
 	data = iio_priv(indio_dev);
 	data->dev = &pdev->dev;
+	data->model_data = of_device_get_match_data(&pdev->dev);
+	platform_set_drvdata(pdev, indio_dev);
 
 	data->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(data->base))
@@ -190,45 +502,119 @@ static int aspeed_adc_probe(struct platform_device *pdev)
 
 	/* Register ADC clock prescaler with source specified by device tree. */
 	spin_lock_init(&data->clk_lock);
-	clk_parent_name = of_clk_get_parent_name(pdev->dev.of_node, 0);
-
-	data->clk_prescaler = clk_hw_register_divider(
-				&pdev->dev, "prescaler", clk_parent_name, 0,
-				data->base + ASPEED_REG_CLOCK_CONTROL,
-				17, 15, 0, &data->clk_lock);
-	if (IS_ERR(data->clk_prescaler))
-		return PTR_ERR(data->clk_prescaler);
-
+	snprintf(clk_parent_name, ARRAY_SIZE(clk_parent_name), "%s",
+		 of_clk_get_parent_name(pdev->dev.of_node, 0));
+	snprintf(clk_name, ARRAY_SIZE(clk_name), "%s-fixed-div",
+		 data->model_data->model_name);
+	data->fixed_div_clk = clk_hw_register_fixed_factor(
+		&pdev->dev, clk_name, clk_parent_name, 0, 1, 2);
+	if (IS_ERR(data->fixed_div_clk))
+		return PTR_ERR(data->fixed_div_clk);
+
+	ret = devm_add_action_or_reset(data->dev,
+				       aspeed_adc_unregister_fixed_divider,
+				       data->fixed_div_clk);
+	if (ret)
+		return ret;
+	snprintf(clk_parent_name, ARRAY_SIZE(clk_parent_name), clk_name);
+
+	if (data->model_data->need_prescaler) {
+		snprintf(clk_name, ARRAY_SIZE(clk_name), "%s-prescaler",
+			 data->model_data->model_name);
+		data->clk_prescaler = devm_clk_hw_register_divider(
+			&pdev->dev, clk_name, clk_parent_name, 0,
+			data->base + ASPEED_REG_CLOCK_CONTROL, 17, 15, 0,
+			&data->clk_lock);
+		if (IS_ERR(data->clk_prescaler))
+			return PTR_ERR(data->clk_prescaler);
+		snprintf(clk_parent_name, ARRAY_SIZE(clk_parent_name),
+			 clk_name);
+		scaler_flags = CLK_SET_RATE_PARENT;
+	}
 	/*
 	 * Register ADC clock scaler downstream from the prescaler. Allow rate
 	 * setting to adjust the prescaler as well.
 	 */
-	data->clk_scaler = clk_hw_register_divider(
-				&pdev->dev, "scaler", "prescaler",
-				CLK_SET_RATE_PARENT,
-				data->base + ASPEED_REG_CLOCK_CONTROL,
-				0, 10, 0, &data->clk_lock);
-	if (IS_ERR(data->clk_scaler)) {
-		ret = PTR_ERR(data->clk_scaler);
-		goto scaler_error;
-	}
-
-	data->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL);
+	snprintf(clk_name, ARRAY_SIZE(clk_name), "%s-scaler",
+		 data->model_data->model_name);
+	data->clk_scaler = devm_clk_hw_register_divider(
+		&pdev->dev, clk_name, clk_parent_name, scaler_flags,
+		data->base + ASPEED_REG_CLOCK_CONTROL, 0,
+		data->model_data->scaler_bit_width,
+		data->model_data->need_prescaler ? CLK_DIVIDER_ONE_BASED : 0,
+		&data->clk_lock);
+	if (IS_ERR(data->clk_scaler))
+		return PTR_ERR(data->clk_scaler);
+
+	data->rst = devm_reset_control_get_shared(&pdev->dev, NULL);
 	if (IS_ERR(data->rst)) {
 		dev_err(&pdev->dev,
 			"invalid or missing reset controller device tree entry");
-		ret = PTR_ERR(data->rst);
-		goto reset_error;
+		return PTR_ERR(data->rst);
 	}
 	reset_control_deassert(data->rst);
 
-	model_data = of_device_get_match_data(&pdev->dev);
+	ret = devm_add_action_or_reset(data->dev, aspeed_adc_reset_assert,
+				       data->rst);
+	if (ret)
+		return ret;
 
-	if (model_data->wait_init_sequence) {
-		/* Enable engine in normal mode. */
-		writel(ASPEED_OPERATION_MODE_NORMAL | ASPEED_ENGINE_ENABLE,
-		       data->base + ASPEED_REG_ENGINE_CONTROL);
+	ret = aspeed_adc_vref_config(indio_dev);
+	if (ret)
+		return ret;
 
+	if (of_find_property(data->dev->of_node, "aspeed,trim-data-valid",
+			     NULL)) {
+		ret = aspeed_adc_set_trim_data(indio_dev);
+		if (ret)
+			return ret;
+	}
+
+	if (of_find_property(data->dev->of_node, "aspeed,battery-sensing",
+			     NULL)) {
+		if (data->model_data->bat_sense_sup) {
+			data->battery_sensing = 1;
+			if (readl(data->base + ASPEED_REG_ENGINE_CONTROL) &
+			    ASPEED_ADC_BAT_SENSING_DIV) {
+				data->battery_mode_gain.mult = 3;
+				data->battery_mode_gain.div = 1;
+			} else {
+				data->battery_mode_gain.mult = 3;
+				data->battery_mode_gain.div = 2;
+			}
+		} else
+			dev_warn(&pdev->dev,
+				 "Failed to enable battery-sensing mode\n");
+	}
+
+	ret = clk_prepare_enable(data->clk_scaler->clk);
+	if (ret)
+		return ret;
+	ret = devm_add_action_or_reset(data->dev,
+				       aspeed_adc_clk_disable_unprepare,
+				       data->clk_scaler->clk);
+	if (ret)
+		return ret;
+	ret = aspeed_adc_set_sampling_rate(indio_dev,
+					   ASPEED_ADC_DEF_SAMPLING_RATE);
+	if (ret)
+		return ret;
+
+	adc_engine_control_reg_val =
+		readl(data->base + ASPEED_REG_ENGINE_CONTROL);
+	adc_engine_control_reg_val |=
+		FIELD_PREP(ASPEED_ADC_OP_MODE, ASPEED_ADC_OP_MODE_NORMAL) |
+		ASPEED_ADC_ENGINE_ENABLE;
+	/* Enable engine in normal mode. */
+	writel(adc_engine_control_reg_val,
+	       data->base + ASPEED_REG_ENGINE_CONTROL);
+
+	ret = devm_add_action_or_reset(data->dev, aspeed_adc_power_down,
+					data);
+	if (ret)
+		return ret;
+
+	if (data->model_data->wait_init_sequence) {
 		/* Wait for initial sequence complete. */
 		ret = readl_poll_timeout(data->base + ASPEED_REG_ENGINE_CONTROL,
 					 adc_engine_control_reg_val,
@@ -237,88 +623,99 @@ static int aspeed_adc_probe(struct platform_device *pdev)
 					 ASPEED_ADC_INIT_POLLING_TIME,
 					 ASPEED_ADC_INIT_TIMEOUT);
 		if (ret)
-			goto poll_timeout_error;
+			return ret;
 	}
 
+	aspeed_adc_compensation(indio_dev);
 	/* Start all channels in normal mode. */
-	ret = clk_prepare_enable(data->clk_scaler->clk);
-	if (ret)
-		goto clk_enable_error;
-
-	adc_engine_control_reg_val = GENMASK(31, 16) |
-		ASPEED_OPERATION_MODE_NORMAL | ASPEED_ENGINE_ENABLE;
+	adc_engine_control_reg_val =
+		readl(data->base + ASPEED_REG_ENGINE_CONTROL);
+	adc_engine_control_reg_val |= ASPEED_ADC_CTRL_CHANNEL;
 	writel(adc_engine_control_reg_val,
-		data->base + ASPEED_REG_ENGINE_CONTROL);
+	       data->base + ASPEED_REG_ENGINE_CONTROL);
 
-	model_data = of_device_get_match_data(&pdev->dev);
-	indio_dev->name = model_data->model_name;
-	indio_dev->dev.parent = &pdev->dev;
+	indio_dev->name = data->model_data->model_name;
 	indio_dev->info = &aspeed_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->channels = aspeed_adc_iio_channels;
-	indio_dev->num_channels = ARRAY_SIZE(aspeed_adc_iio_channels);
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto iio_register_error;
-
-	return 0;
+	indio_dev->channels = data->battery_sensing ?
+					    aspeed_adc_iio_bat_channels :
+					    aspeed_adc_iio_channels;
+	indio_dev->num_channels = data->model_data->num_channels;
 
-iio_register_error:
-	writel(ASPEED_OPERATION_MODE_POWER_DOWN,
-		data->base + ASPEED_REG_ENGINE_CONTROL);
-	clk_disable_unprepare(data->clk_scaler->clk);
-clk_enable_error:
-poll_timeout_error:
-	reset_control_assert(data->rst);
-reset_error:
-	clk_hw_unregister_divider(data->clk_scaler);
-scaler_error:
-	clk_hw_unregister_divider(data->clk_prescaler);
+	ret = devm_iio_device_register(data->dev, indio_dev);
 	return ret;
 }
 
-static int aspeed_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct aspeed_adc_data *data = iio_priv(indio_dev);
+static const struct aspeed_adc_trim_locate ast2500_adc_trim = {
+	.offset = 0x154,
+	.field = GENMASK(31, 28),
+};
 
-	iio_device_unregister(indio_dev);
-	writel(ASPEED_OPERATION_MODE_POWER_DOWN,
-		data->base + ASPEED_REG_ENGINE_CONTROL);
-	clk_disable_unprepare(data->clk_scaler->clk);
-	reset_control_assert(data->rst);
-	clk_hw_unregister_divider(data->clk_scaler);
-	clk_hw_unregister_divider(data->clk_prescaler);
+static const struct aspeed_adc_trim_locate ast2600_adc0_trim = {
+	.offset = 0x5d0,
+	.field = GENMASK(3, 0),
+};
 
-	return 0;
-}
+static const struct aspeed_adc_trim_locate ast2600_adc1_trim = {
+	.offset = 0x5d0,
+	.field = GENMASK(7, 4),
+};
 
 static const struct aspeed_adc_model_data ast2400_model_data = {
 	.model_name = "ast2400-adc",
-	.vref_voltage = 2500, // mV
+	.vref_fixed_mv = 2500,
 	.min_sampling_rate = 10000,
 	.max_sampling_rate = 500000,
+	.need_prescaler = true,
+	.scaler_bit_width = 10,
+	.num_channels = 16,
 };
 
 static const struct aspeed_adc_model_data ast2500_model_data = {
 	.model_name = "ast2500-adc",
-	.vref_voltage = 1800, // mV
+	.vref_fixed_mv = 1800,
 	.min_sampling_rate = 1,
 	.max_sampling_rate = 1000000,
 	.wait_init_sequence = true,
+	.need_prescaler = true,
+	.scaler_bit_width = 10,
+	.num_channels = 16,
+	.trim_locate = &ast2500_adc_trim,
+};
+
+static const struct aspeed_adc_model_data ast2600_adc0_model_data = {
+	.model_name = "ast2600-adc0",
+	.min_sampling_rate = 10000,
+	.max_sampling_rate = 500000,
+	.wait_init_sequence = true,
+	.bat_sense_sup = true,
+	.scaler_bit_width = 16,
+	.num_channels = 8,
+	.trim_locate = &ast2600_adc0_trim,
+};
+
+static const struct aspeed_adc_model_data ast2600_adc1_model_data = {
+	.model_name = "ast2600-adc1",
+	.min_sampling_rate = 10000,
+	.max_sampling_rate = 500000,
+	.wait_init_sequence = true,
+	.bat_sense_sup = true,
+	.scaler_bit_width = 16,
+	.num_channels = 8,
+	.trim_locate = &ast2600_adc1_trim,
 };
 
 static const struct of_device_id aspeed_adc_matches[] = {
 	{ .compatible = "aspeed,ast2400-adc", .data = &ast2400_model_data },
 	{ .compatible = "aspeed,ast2500-adc", .data = &ast2500_model_data },
+	{ .compatible = "aspeed,ast2600-adc0", .data = &ast2600_adc0_model_data },
+	{ .compatible = "aspeed,ast2600-adc1", .data = &ast2600_adc1_model_data },
 	{},
 };
 MODULE_DEVICE_TABLE(of, aspeed_adc_matches);
 
 static struct platform_driver aspeed_adc_driver = {
 	.probe = aspeed_adc_probe,
-	.remove = aspeed_adc_remove,
 	.driver = {
 		.name = KBUILD_MODNAME,
 		.of_match_table = aspeed_adc_matches,
@@ -328,5 +725,5 @@ static struct platform_driver aspeed_adc_driver = {
 module_platform_driver(aspeed_adc_driver);
 
 MODULE_AUTHOR("Rick Altherr <raltherr@google.com>");
-MODULE_DESCRIPTION("Aspeed AST2400/2500 ADC Driver");
+MODULE_DESCRIPTION("Aspeed AST2400/2500/2600 ADC Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/at91-sama5d2_adc.c b/drivers/iio/adc/at91-sama5d2_adc.c
index 9d96f7d08b95..33e251552214 100644
--- a/drivers/iio/adc/at91-sama5d2_adc.c
+++ b/drivers/iio/adc/at91-sama5d2_adc.c
@@ -4,18 +4,23 @@
  *
  * Copyright (C) 2015 Atmel,
  *               2015 Ludovic Desroches <ludovic.desroches@atmel.com>
+ *		 2021 Microchip Technology, Inc. and its subsidiaries
+ *		 2021 Eugen Hristev <eugen.hristev@microchip.com>
  */
 
 #include <linux/bitops.h>
 #include <linux/clk.h>
+#include <linux/delay.h>
 #include <linux/dma-mapping.h>
 #include <linux/dmaengine.h>
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/sched.h>
+#include <linux/units.h>
 #include <linux/wait.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -23,11 +28,16 @@
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
+#include <linux/nvmem-consumer.h>
 #include <linux/pinctrl/consumer.h>
+#include <linux/pm_runtime.h>
 #include <linux/regulator/consumer.h>
 
+#include <dt-bindings/iio/adc/at91-sama5d2_adc.h>
+
+struct at91_adc_reg_layout {
 /* Control Register */
-#define AT91_SAMA5D2_CR		0x00
+	u16				CR;
 /* Software Reset */
 #define	AT91_SAMA5D2_CR_SWRST		BIT(0)
 /* Start Conversion */
@@ -38,7 +48,7 @@
 #define	AT91_SAMA5D2_CR_CMPRST		BIT(4)
 
 /* Mode Register */
-#define AT91_SAMA5D2_MR		0x04
+	u16				MR;
 /* Trigger Selection */
 #define	AT91_SAMA5D2_MR_TRGSEL(v)	((v) << 1)
 /* ADTRG */
@@ -69,11 +79,14 @@
 /* Startup Time */
 #define	AT91_SAMA5D2_MR_STARTUP(v)	((v) << 16)
 #define AT91_SAMA5D2_MR_STARTUP_MASK	GENMASK(19, 16)
+/* Minimum startup time for temperature sensor */
+#define AT91_SAMA5D2_MR_STARTUP_TS_MIN	(50)
 /* Analog Change */
 #define	AT91_SAMA5D2_MR_ANACH		BIT(23)
 /* Tracking Time */
 #define	AT91_SAMA5D2_MR_TRACKTIM(v)	((v) << 24)
-#define	AT91_SAMA5D2_MR_TRACKTIM_MAX	0xff
+#define	AT91_SAMA5D2_MR_TRACKTIM_TS	6
+#define	AT91_SAMA5D2_MR_TRACKTIM_MAX	0xf
 /* Transfer Time */
 #define	AT91_SAMA5D2_MR_TRANSFER(v)	((v) << 28)
 #define	AT91_SAMA5D2_MR_TRANSFER_MAX	0x3
@@ -81,74 +94,93 @@
 #define	AT91_SAMA5D2_MR_USEQ		BIT(31)
 
 /* Channel Sequence Register 1 */
-#define AT91_SAMA5D2_SEQR1	0x08
+	u16				SEQR1;
 /* Channel Sequence Register 2 */
-#define AT91_SAMA5D2_SEQR2	0x0c
+	u16				SEQR2;
 /* Channel Enable Register */
-#define AT91_SAMA5D2_CHER	0x10
+	u16				CHER;
 /* Channel Disable Register */
-#define AT91_SAMA5D2_CHDR	0x14
+	u16				CHDR;
 /* Channel Status Register */
-#define AT91_SAMA5D2_CHSR	0x18
+	u16				CHSR;
 /* Last Converted Data Register */
-#define AT91_SAMA5D2_LCDR	0x20
+	u16				LCDR;
 /* Interrupt Enable Register */
-#define AT91_SAMA5D2_IER	0x24
+	u16				IER;
 /* Interrupt Enable Register - TS X measurement ready */
 #define AT91_SAMA5D2_IER_XRDY   BIT(20)
 /* Interrupt Enable Register - TS Y measurement ready */
 #define AT91_SAMA5D2_IER_YRDY   BIT(21)
 /* Interrupt Enable Register - TS pressure measurement ready */
 #define AT91_SAMA5D2_IER_PRDY   BIT(22)
+/* Interrupt Enable Register - Data ready */
+#define AT91_SAMA5D2_IER_DRDY   BIT(24)
 /* Interrupt Enable Register - general overrun error */
 #define AT91_SAMA5D2_IER_GOVRE BIT(25)
 /* Interrupt Enable Register - Pen detect */
 #define AT91_SAMA5D2_IER_PEN    BIT(29)
 /* Interrupt Enable Register - No pen detect */
 #define AT91_SAMA5D2_IER_NOPEN  BIT(30)
+
 /* Interrupt Disable Register */
-#define AT91_SAMA5D2_IDR	0x28
+	u16				IDR;
 /* Interrupt Mask Register */
-#define AT91_SAMA5D2_IMR	0x2c
+	u16				IMR;
 /* Interrupt Status Register */
-#define AT91_SAMA5D2_ISR	0x30
+	u16				ISR;
+/* End of Conversion Interrupt Enable Register */
+	u16				EOC_IER;
+/* End of Conversion Interrupt Disable Register */
+	u16				EOC_IDR;
+/* End of Conversion Interrupt Mask Register */
+	u16				EOC_IMR;
+/* End of Conversion Interrupt Status Register */
+	u16				EOC_ISR;
 /* Interrupt Status Register - Pen touching sense status */
 #define AT91_SAMA5D2_ISR_PENS   BIT(31)
 /* Last Channel Trigger Mode Register */
-#define AT91_SAMA5D2_LCTMR	0x34
+	u16				LCTMR;
 /* Last Channel Compare Window Register */
-#define AT91_SAMA5D2_LCCWR	0x38
+	u16				LCCWR;
 /* Overrun Status Register */
-#define AT91_SAMA5D2_OVER	0x3c
+	u16				OVER;
 /* Extended Mode Register */
-#define AT91_SAMA5D2_EMR	0x40
+	u16				EMR;
 /* Extended Mode Register - Oversampling rate */
-#define AT91_SAMA5D2_EMR_OSR(V)			((V) << 16)
-#define AT91_SAMA5D2_EMR_OSR_MASK		GENMASK(17, 16)
+#define AT91_SAMA5D2_EMR_OSR(V, M)		(((V) << 16) & (M))
 #define AT91_SAMA5D2_EMR_OSR_1SAMPLES		0
 #define AT91_SAMA5D2_EMR_OSR_4SAMPLES		1
 #define AT91_SAMA5D2_EMR_OSR_16SAMPLES		2
+#define AT91_SAMA5D2_EMR_OSR_64SAMPLES		3
+#define AT91_SAMA5D2_EMR_OSR_256SAMPLES		4
+
+/* Extended Mode Register - TRACKX */
+#define AT91_SAMA5D2_TRACKX_MASK		GENMASK(23, 22)
+#define AT91_SAMA5D2_TRACKX(x)			(((x) << 22) & \
+						 AT91_SAMA5D2_TRACKX_MASK)
+/* TRACKX for temperature sensor. */
+#define AT91_SAMA5D2_TRACKX_TS			(1)
 
 /* Extended Mode Register - Averaging on single trigger event */
 #define AT91_SAMA5D2_EMR_ASTE(V)		((V) << 20)
+
 /* Compare Window Register */
-#define AT91_SAMA5D2_CWR	0x44
+	u16				CWR;
 /* Channel Gain Register */
-#define AT91_SAMA5D2_CGR	0x48
-
+	u16				CGR;
 /* Channel Offset Register */
-#define AT91_SAMA5D2_COR	0x4c
-#define AT91_SAMA5D2_COR_DIFF_OFFSET	16
-
-/* Channel Data Register 0 */
-#define AT91_SAMA5D2_CDR0	0x50
+	u16				COR;
+/* Channel Offset Register differential offset - constant, not a register */
+	u16				COR_diff_offset;
 /* Analog Control Register */
-#define AT91_SAMA5D2_ACR	0x94
+	u16				ACR;
 /* Analog Control Register - Pen detect sensitivity mask */
 #define AT91_SAMA5D2_ACR_PENDETSENS_MASK        GENMASK(1, 0)
+/* Analog Control Register - Source last channel */
+#define AT91_SAMA5D2_ACR_SRCLCH		BIT(16)
 
 /* Touchscreen Mode Register */
-#define AT91_SAMA5D2_TSMR	0xb0
+	u16				TSMR;
 /* Touchscreen Mode Register - No touch mode */
 #define AT91_SAMA5D2_TSMR_TSMODE_NONE           0
 /* Touchscreen Mode Register - 4 wire screen, no pressure measurement */
@@ -177,13 +209,13 @@
 #define AT91_SAMA5D2_TSMR_PENDET_ENA            BIT(24)
 
 /* Touchscreen X Position Register */
-#define AT91_SAMA5D2_XPOSR	0xb4
+	u16				XPOSR;
 /* Touchscreen Y Position Register */
-#define AT91_SAMA5D2_YPOSR	0xb8
+	u16				YPOSR;
 /* Touchscreen Pressure Register */
-#define AT91_SAMA5D2_PRESSR	0xbc
+	u16				PRESSR;
 /* Trigger Register */
-#define AT91_SAMA5D2_TRGR	0xc0
+	u16				TRGR;
 /* Mask for TRGMOD field of TRGR register */
 #define AT91_SAMA5D2_TRGR_TRGMOD_MASK GENMASK(2, 0)
 /* No trigger, only software trigger can start conversions */
@@ -202,30 +234,90 @@
 #define AT91_SAMA5D2_TRGR_TRGPER(x)             ((x) << 16)
 
 /* Correction Select Register */
-#define AT91_SAMA5D2_COSR	0xd0
+	u16				COSR;
 /* Correction Value Register */
-#define AT91_SAMA5D2_CVR	0xd4
+	u16				CVR;
 /* Channel Error Correction Register */
-#define AT91_SAMA5D2_CECR	0xd8
+	u16				CECR;
 /* Write Protection Mode Register */
-#define AT91_SAMA5D2_WPMR	0xe4
+	u16				WPMR;
 /* Write Protection Status Register */
-#define AT91_SAMA5D2_WPSR	0xe8
+	u16				WPSR;
 /* Version Register */
-#define AT91_SAMA5D2_VERSION	0xfc
-
-#define AT91_SAMA5D2_HW_TRIG_CNT 3
-#define AT91_SAMA5D2_SINGLE_CHAN_CNT 12
-#define AT91_SAMA5D2_DIFF_CHAN_CNT 6
+	u16				VERSION;
+/* Temperature Sensor Mode Register */
+	u16				TEMPMR;
+/* Temperature Sensor Mode - Temperature sensor on */
+#define AT91_SAMA5D2_TEMPMR_TEMPON	BIT(0)
+};
 
-#define AT91_SAMA5D2_TIMESTAMP_CHAN_IDX (AT91_SAMA5D2_SINGLE_CHAN_CNT + \
-					 AT91_SAMA5D2_DIFF_CHAN_CNT + 1)
+static const struct at91_adc_reg_layout sama5d2_layout = {
+	.CR =			0x00,
+	.MR =			0x04,
+	.SEQR1 =		0x08,
+	.SEQR2 =		0x0c,
+	.CHER =			0x10,
+	.CHDR =			0x14,
+	.CHSR =			0x18,
+	.LCDR =			0x20,
+	.IER =			0x24,
+	.IDR =			0x28,
+	.IMR =			0x2c,
+	.ISR =			0x30,
+	.LCTMR =		0x34,
+	.LCCWR =		0x38,
+	.OVER =			0x3c,
+	.EMR =			0x40,
+	.CWR =			0x44,
+	.CGR =			0x48,
+	.COR =			0x4c,
+	.COR_diff_offset =	16,
+	.ACR =			0x94,
+	.TSMR =			0xb0,
+	.XPOSR =		0xb4,
+	.YPOSR =		0xb8,
+	.PRESSR =		0xbc,
+	.TRGR =			0xc0,
+	.COSR =			0xd0,
+	.CVR =			0xd4,
+	.CECR =			0xd8,
+	.WPMR =			0xe4,
+	.WPSR =			0xe8,
+	.VERSION =		0xfc,
+};
 
-#define AT91_SAMA5D2_TOUCH_X_CHAN_IDX (AT91_SAMA5D2_SINGLE_CHAN_CNT + \
-					 AT91_SAMA5D2_DIFF_CHAN_CNT * 2)
-#define AT91_SAMA5D2_TOUCH_Y_CHAN_IDX   (AT91_SAMA5D2_TOUCH_X_CHAN_IDX + 1)
-#define AT91_SAMA5D2_TOUCH_P_CHAN_IDX   (AT91_SAMA5D2_TOUCH_Y_CHAN_IDX + 1)
-#define AT91_SAMA5D2_MAX_CHAN_IDX	AT91_SAMA5D2_TOUCH_P_CHAN_IDX
+static const struct at91_adc_reg_layout sama7g5_layout = {
+	.CR =			0x00,
+	.MR =			0x04,
+	.SEQR1 =		0x08,
+	.SEQR2 =		0x0c,
+	.CHER =			0x10,
+	.CHDR =			0x14,
+	.CHSR =			0x18,
+	.LCDR =			0x20,
+	.IER =			0x24,
+	.IDR =			0x28,
+	.IMR =			0x2c,
+	.ISR =			0x30,
+	.EOC_IER =		0x34,
+	.EOC_IDR =		0x38,
+	.EOC_IMR =		0x3c,
+	.EOC_ISR =		0x40,
+	.TEMPMR =		0x44,
+	.OVER =			0x4c,
+	.EMR =			0x50,
+	.CWR =			0x54,
+	.COR =			0x5c,
+	.COR_diff_offset =	0,
+	.ACR =			0xe0,
+	.TRGR =			0x100,
+	.COSR =			0x104,
+	.CVR =			0x108,
+	.CECR =			0x10c,
+	.WPMR =			0x118,
+	.WPSR =			0x11c,
+	.VERSION =		0x130,
+};
 
 #define AT91_SAMA5D2_TOUCH_SAMPLE_PERIOD_US          2000    /* 2ms */
 #define AT91_SAMA5D2_TOUCH_PEN_DETECT_DEBOUNCE_US    200
@@ -234,32 +326,15 @@
 
 #define AT91_SAMA5D2_MAX_POS_BITS			12
 
-/*
- * Maximum number of bytes to hold conversion from all channels
- * without the timestamp.
- */
-#define AT91_BUFFER_MAX_CONVERSION_BYTES ((AT91_SAMA5D2_SINGLE_CHAN_CNT + \
-					 AT91_SAMA5D2_DIFF_CHAN_CNT) * 2)
-
-/* This total must also include the timestamp */
-#define AT91_BUFFER_MAX_BYTES (AT91_BUFFER_MAX_CONVERSION_BYTES + 8)
-
-#define AT91_BUFFER_MAX_HWORDS (AT91_BUFFER_MAX_BYTES / 2)
-
 #define AT91_HWFIFO_MAX_SIZE_STR	"128"
 #define AT91_HWFIFO_MAX_SIZE		128
 
-/* Possible values for oversampling ratio */
-#define AT91_OSR_1SAMPLES		1
-#define AT91_OSR_4SAMPLES		4
-#define AT91_OSR_16SAMPLES		16
-
-#define AT91_SAMA5D2_CHAN_SINGLE(num, addr)				\
+#define AT91_SAMA5D2_CHAN_SINGLE(index, num, addr)			\
 	{								\
 		.type = IIO_VOLTAGE,					\
 		.channel = num,						\
 		.address = addr,					\
-		.scan_index = num,					\
+		.scan_index = index,					\
 		.scan_type = {						\
 			.sign = 'u',					\
 			.realbits = 14,					\
@@ -269,18 +344,20 @@
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = "CH"#num,				\
 		.indexed = 1,						\
 	}
 
-#define AT91_SAMA5D2_CHAN_DIFF(num, num2, addr)				\
+#define AT91_SAMA5D2_CHAN_DIFF(index, num, num2, addr)			\
 	{								\
 		.type = IIO_VOLTAGE,					\
 		.differential = 1,					\
 		.channel = num,						\
 		.channel2 = num2,					\
 		.address = addr,					\
-		.scan_index = num + AT91_SAMA5D2_SINGLE_CHAN_CNT,	\
+		.scan_index = index,					\
 		.scan_type = {						\
 			.sign = 's',					\
 			.realbits = 14,					\
@@ -290,6 +367,8 @@
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = "CH"#num"-CH"#num2,			\
 		.indexed = 1,						\
 	}
@@ -309,6 +388,8 @@
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = name,					\
 	}
 #define AT91_SAMA5D2_CHAN_PRESSURE(num, name)				\
@@ -324,16 +405,115 @@
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ)|\
 				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
 		.datasheet_name = name,					\
 	}
 
-#define at91_adc_readl(st, reg)		readl_relaxed(st->base + reg)
-#define at91_adc_writel(st, reg, val)	writel_relaxed(val, st->base + reg)
+#define AT91_SAMA5D2_CHAN_TEMP(num, name, addr)				\
+	{								\
+		.type = IIO_TEMP,					\
+		.channel = num,						\
+		.address =  addr,					\
+		.scan_index = num,					\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),	\
+		.info_mask_shared_by_all =				\
+				BIT(IIO_CHAN_INFO_PROCESSED) |		\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.datasheet_name = name,					\
+	}
+
+#define at91_adc_readl(st, reg)						\
+	readl_relaxed((st)->base + (st)->soc_info.platform->layout->reg)
+#define at91_adc_read_chan(st, reg)					\
+	readl_relaxed((st)->base + reg)
+#define at91_adc_writel(st, reg, val)					\
+	writel_relaxed(val, (st)->base + (st)->soc_info.platform->layout->reg)
+
+/**
+ * struct at91_adc_platform - at91-sama5d2 platform information struct
+ * @layout:		pointer to the reg layout struct
+ * @adc_channels:	pointer to an array of channels for registering in
+ *			the iio subsystem
+ * @nr_channels:	number of physical channels available
+ * @touch_chan_x:	index of the touchscreen X channel
+ * @touch_chan_y:	index of the touchscreen Y channel
+ * @touch_chan_p:	index of the touchscreen P channel
+ * @max_channels:	number of total channels
+ * @max_index:		highest channel index (highest index may be higher
+ *			than the total channel number)
+ * @hw_trig_cnt:	number of possible hardware triggers
+ * @osr_mask:		oversampling ratio bitmask on EMR register
+ * @oversampling_avail:	available oversampling values
+ * @oversampling_avail_no: number of available oversampling values
+ * @chan_realbits:	realbits for registered channels
+ * @temp_chan:		temperature channel index
+ * @temp_sensor:	temperature sensor supported
+ */
+struct at91_adc_platform {
+	const struct at91_adc_reg_layout	*layout;
+	const struct iio_chan_spec		(*adc_channels)[];
+	unsigned int				nr_channels;
+	unsigned int				touch_chan_x;
+	unsigned int				touch_chan_y;
+	unsigned int				touch_chan_p;
+	unsigned int				max_channels;
+	unsigned int				max_index;
+	unsigned int				hw_trig_cnt;
+	unsigned int				osr_mask;
+	unsigned int				oversampling_avail[5];
+	unsigned int				oversampling_avail_no;
+	unsigned int				chan_realbits;
+	unsigned int				temp_chan;
+	bool					temp_sensor;
+};
+
+/**
+ * struct at91_adc_temp_sensor_clb - at91-sama5d2 temperature sensor
+ * calibration data structure
+ * @p1: P1 calibration temperature
+ * @p4: P4 calibration voltage
+ * @p6: P6 calibration voltage
+ */
+struct at91_adc_temp_sensor_clb {
+	u32 p1;
+	u32 p4;
+	u32 p6;
+};
+
+/**
+ * enum at91_adc_ts_clb_idx - calibration indexes in NVMEM buffer
+ * @AT91_ADC_TS_CLB_IDX_P1: index for P1
+ * @AT91_ADC_TS_CLB_IDX_P4: index for P4
+ * @AT91_ADC_TS_CLB_IDX_P6: index for P6
+ * @AT91_ADC_TS_CLB_IDX_MAX: max index for temperature calibration packet in OTP
+ */
+enum at91_adc_ts_clb_idx {
+	AT91_ADC_TS_CLB_IDX_P1 = 2,
+	AT91_ADC_TS_CLB_IDX_P4 = 5,
+	AT91_ADC_TS_CLB_IDX_P6 = 7,
+	AT91_ADC_TS_CLB_IDX_MAX = 19,
+};
+
+/* Temperature sensor calibration - Vtemp voltage sensitivity to temperature. */
+#define AT91_ADC_TS_VTEMP_DT		(2080U)
 
+/**
+ * struct at91_adc_soc_info - at91-sama5d2 soc information struct
+ * @startup_time:	device startup time
+ * @min_sample_rate:	minimum sample rate in Hz
+ * @max_sample_rate:	maximum sample rate in Hz
+ * @platform:		pointer to the platform structure
+ * @temp_sensor_clb:	temperature sensor calibration data structure
+ */
 struct at91_adc_soc_info {
 	unsigned			startup_time;
 	unsigned			min_sample_rate;
 	unsigned			max_sample_rate;
+	const struct at91_adc_platform	*platform;
+	struct at91_adc_temp_sensor_clb	temp_sensor_clb;
 };
 
 struct at91_adc_trigger {
@@ -344,7 +524,7 @@ struct at91_adc_trigger {
 };
 
 /**
- * at91_adc_dma - at91-sama5d2 dma information struct
+ * struct at91_adc_dma - at91-sama5d2 dma information struct
  * @dma_chan:		the dma channel acquired
  * @rx_buf:		dma coherent allocated area
  * @rx_dma_buf:		dma handler for the buffer
@@ -366,7 +546,7 @@ struct at91_adc_dma {
 };
 
 /**
- * at91_adc_touch - at91-sama5d2 touchscreen information struct
+ * struct at91_adc_touch - at91-sama5d2 touchscreen information struct
  * @sample_period_val:		the value for periodic trigger interval
  * @touching:			is the pen touching the screen or not
  * @x_pos:			temporary placeholder for pressure computation
@@ -381,6 +561,27 @@ struct at91_adc_touch {
 	struct work_struct		workq;
 };
 
+/**
+ * struct at91_adc_temp - at91-sama5d2 temperature information structure
+ * @sample_period_val:	sample period value
+ * @saved_sample_rate:	saved sample rate
+ * @saved_oversampling:	saved oversampling
+ */
+struct at91_adc_temp {
+	u16				sample_period_val;
+	u16				saved_sample_rate;
+	u16				saved_oversampling;
+};
+
+/*
+ * Buffer size requirements:
+ * No channels * bytes_per_channel(2) + timestamp bytes (8)
+ * Divided by 2 because we need half words.
+ * We assume 32 channels for now, has to be increased if needed.
+ * Nobody minds a buffer being too big.
+ */
+#define AT91_BUFFER_MAX_HWORDS ((32 * 2 + 8) / 2)
+
 struct at91_adc_state {
 	void __iomem			*base;
 	int				irq;
@@ -399,7 +600,11 @@ struct at91_adc_state {
 	wait_queue_head_t		wq_data_available;
 	struct at91_adc_dma		dma_st;
 	struct at91_adc_touch		touch_st;
-	u16				buffer[AT91_BUFFER_MAX_HWORDS];
+	struct at91_adc_temp		temp_st;
+	struct iio_dev			*indio_dev;
+	struct device			*dev;
+	/* Ensure naturally aligned timestamp */
+	u16				buffer[AT91_BUFFER_MAX_HWORDS] __aligned(8);
 	/*
 	 * lock to prevent concurrent 'single conversion' requests through
 	 * sysfs.
@@ -434,29 +639,108 @@ static const struct at91_adc_trigger at91_adc_trigger_list[] = {
 	},
 };
 
-static const struct iio_chan_spec at91_adc_channels[] = {
-	AT91_SAMA5D2_CHAN_SINGLE(0, 0x50),
-	AT91_SAMA5D2_CHAN_SINGLE(1, 0x54),
-	AT91_SAMA5D2_CHAN_SINGLE(2, 0x58),
-	AT91_SAMA5D2_CHAN_SINGLE(3, 0x5c),
-	AT91_SAMA5D2_CHAN_SINGLE(4, 0x60),
-	AT91_SAMA5D2_CHAN_SINGLE(5, 0x64),
-	AT91_SAMA5D2_CHAN_SINGLE(6, 0x68),
-	AT91_SAMA5D2_CHAN_SINGLE(7, 0x6c),
-	AT91_SAMA5D2_CHAN_SINGLE(8, 0x70),
-	AT91_SAMA5D2_CHAN_SINGLE(9, 0x74),
-	AT91_SAMA5D2_CHAN_SINGLE(10, 0x78),
-	AT91_SAMA5D2_CHAN_SINGLE(11, 0x7c),
-	AT91_SAMA5D2_CHAN_DIFF(0, 1, 0x50),
-	AT91_SAMA5D2_CHAN_DIFF(2, 3, 0x58),
-	AT91_SAMA5D2_CHAN_DIFF(4, 5, 0x60),
-	AT91_SAMA5D2_CHAN_DIFF(6, 7, 0x68),
-	AT91_SAMA5D2_CHAN_DIFF(8, 9, 0x70),
-	AT91_SAMA5D2_CHAN_DIFF(10, 11, 0x78),
-	IIO_CHAN_SOFT_TIMESTAMP(AT91_SAMA5D2_TIMESTAMP_CHAN_IDX),
-	AT91_SAMA5D2_CHAN_TOUCH(AT91_SAMA5D2_TOUCH_X_CHAN_IDX, "x", IIO_MOD_X),
-	AT91_SAMA5D2_CHAN_TOUCH(AT91_SAMA5D2_TOUCH_Y_CHAN_IDX, "y", IIO_MOD_Y),
-	AT91_SAMA5D2_CHAN_PRESSURE(AT91_SAMA5D2_TOUCH_P_CHAN_IDX, "pressure"),
+static const struct iio_chan_spec at91_sama5d2_adc_channels[] = {
+	AT91_SAMA5D2_CHAN_SINGLE(0, 0, 0x50),
+	AT91_SAMA5D2_CHAN_SINGLE(1, 1, 0x54),
+	AT91_SAMA5D2_CHAN_SINGLE(2, 2, 0x58),
+	AT91_SAMA5D2_CHAN_SINGLE(3, 3, 0x5c),
+	AT91_SAMA5D2_CHAN_SINGLE(4, 4, 0x60),
+	AT91_SAMA5D2_CHAN_SINGLE(5, 5, 0x64),
+	AT91_SAMA5D2_CHAN_SINGLE(6, 6, 0x68),
+	AT91_SAMA5D2_CHAN_SINGLE(7, 7, 0x6c),
+	AT91_SAMA5D2_CHAN_SINGLE(8, 8, 0x70),
+	AT91_SAMA5D2_CHAN_SINGLE(9, 9, 0x74),
+	AT91_SAMA5D2_CHAN_SINGLE(10, 10, 0x78),
+	AT91_SAMA5D2_CHAN_SINGLE(11, 11, 0x7c),
+	/* original ABI has the differential channels with a gap in between */
+	AT91_SAMA5D2_CHAN_DIFF(12, 0, 1, 0x50),
+	AT91_SAMA5D2_CHAN_DIFF(14, 2, 3, 0x58),
+	AT91_SAMA5D2_CHAN_DIFF(16, 4, 5, 0x60),
+	AT91_SAMA5D2_CHAN_DIFF(18, 6, 7, 0x68),
+	AT91_SAMA5D2_CHAN_DIFF(20, 8, 9, 0x70),
+	AT91_SAMA5D2_CHAN_DIFF(22, 10, 11, 0x78),
+	IIO_CHAN_SOFT_TIMESTAMP(23),
+	AT91_SAMA5D2_CHAN_TOUCH(24, "x", IIO_MOD_X),
+	AT91_SAMA5D2_CHAN_TOUCH(25, "y", IIO_MOD_Y),
+	AT91_SAMA5D2_CHAN_PRESSURE(26, "pressure"),
+};
+
+static const struct iio_chan_spec at91_sama7g5_adc_channels[] = {
+	AT91_SAMA5D2_CHAN_SINGLE(0, 0, 0x60),
+	AT91_SAMA5D2_CHAN_SINGLE(1, 1, 0x64),
+	AT91_SAMA5D2_CHAN_SINGLE(2, 2, 0x68),
+	AT91_SAMA5D2_CHAN_SINGLE(3, 3, 0x6c),
+	AT91_SAMA5D2_CHAN_SINGLE(4, 4, 0x70),
+	AT91_SAMA5D2_CHAN_SINGLE(5, 5, 0x74),
+	AT91_SAMA5D2_CHAN_SINGLE(6, 6, 0x78),
+	AT91_SAMA5D2_CHAN_SINGLE(7, 7, 0x7c),
+	AT91_SAMA5D2_CHAN_SINGLE(8, 8, 0x80),
+	AT91_SAMA5D2_CHAN_SINGLE(9, 9, 0x84),
+	AT91_SAMA5D2_CHAN_SINGLE(10, 10, 0x88),
+	AT91_SAMA5D2_CHAN_SINGLE(11, 11, 0x8c),
+	AT91_SAMA5D2_CHAN_SINGLE(12, 12, 0x90),
+	AT91_SAMA5D2_CHAN_SINGLE(13, 13, 0x94),
+	AT91_SAMA5D2_CHAN_SINGLE(14, 14, 0x98),
+	AT91_SAMA5D2_CHAN_SINGLE(15, 15, 0x9c),
+	AT91_SAMA5D2_CHAN_DIFF(16, 0, 1, 0x60),
+	AT91_SAMA5D2_CHAN_DIFF(17, 2, 3, 0x68),
+	AT91_SAMA5D2_CHAN_DIFF(18, 4, 5, 0x70),
+	AT91_SAMA5D2_CHAN_DIFF(19, 6, 7, 0x78),
+	AT91_SAMA5D2_CHAN_DIFF(20, 8, 9, 0x80),
+	AT91_SAMA5D2_CHAN_DIFF(21, 10, 11, 0x88),
+	AT91_SAMA5D2_CHAN_DIFF(22, 12, 13, 0x90),
+	AT91_SAMA5D2_CHAN_DIFF(23, 14, 15, 0x98),
+	IIO_CHAN_SOFT_TIMESTAMP(24),
+	AT91_SAMA5D2_CHAN_TEMP(AT91_SAMA7G5_ADC_TEMP_CHANNEL, "temp", 0xdc),
+};
+
+static const struct at91_adc_platform sama5d2_platform = {
+	.layout = &sama5d2_layout,
+	.adc_channels = &at91_sama5d2_adc_channels,
+#define AT91_SAMA5D2_SINGLE_CHAN_CNT 12
+#define AT91_SAMA5D2_DIFF_CHAN_CNT 6
+	.nr_channels = AT91_SAMA5D2_SINGLE_CHAN_CNT +
+		       AT91_SAMA5D2_DIFF_CHAN_CNT,
+#define AT91_SAMA5D2_TOUCH_X_CHAN_IDX	(AT91_SAMA5D2_SINGLE_CHAN_CNT + \
+					AT91_SAMA5D2_DIFF_CHAN_CNT * 2)
+	.touch_chan_x = AT91_SAMA5D2_TOUCH_X_CHAN_IDX,
+#define AT91_SAMA5D2_TOUCH_Y_CHAN_IDX	(AT91_SAMA5D2_TOUCH_X_CHAN_IDX + 1)
+	.touch_chan_y = AT91_SAMA5D2_TOUCH_Y_CHAN_IDX,
+#define AT91_SAMA5D2_TOUCH_P_CHAN_IDX	(AT91_SAMA5D2_TOUCH_Y_CHAN_IDX + 1)
+	.touch_chan_p = AT91_SAMA5D2_TOUCH_P_CHAN_IDX,
+#define AT91_SAMA5D2_MAX_CHAN_IDX	AT91_SAMA5D2_TOUCH_P_CHAN_IDX
+	.max_channels = ARRAY_SIZE(at91_sama5d2_adc_channels),
+	.max_index = AT91_SAMA5D2_MAX_CHAN_IDX,
+#define AT91_SAMA5D2_HW_TRIG_CNT	3
+	.hw_trig_cnt = AT91_SAMA5D2_HW_TRIG_CNT,
+	.osr_mask = GENMASK(17, 16),
+	.oversampling_avail = { 1, 4, 16, },
+	.oversampling_avail_no = 3,
+	.chan_realbits = 14,
+};
+
+static const struct at91_adc_platform sama7g5_platform = {
+	.layout = &sama7g5_layout,
+	.adc_channels = &at91_sama7g5_adc_channels,
+#define AT91_SAMA7G5_SINGLE_CHAN_CNT	16
+#define AT91_SAMA7G5_DIFF_CHAN_CNT	8
+#define AT91_SAMA7G5_TEMP_CHAN_CNT	1
+	.nr_channels = AT91_SAMA7G5_SINGLE_CHAN_CNT +
+		       AT91_SAMA7G5_DIFF_CHAN_CNT +
+		       AT91_SAMA7G5_TEMP_CHAN_CNT,
+#define AT91_SAMA7G5_MAX_CHAN_IDX	(AT91_SAMA7G5_SINGLE_CHAN_CNT + \
+					AT91_SAMA7G5_DIFF_CHAN_CNT + \
+					AT91_SAMA7G5_TEMP_CHAN_CNT)
+	.max_channels = ARRAY_SIZE(at91_sama7g5_adc_channels),
+	.max_index = AT91_SAMA7G5_MAX_CHAN_IDX,
+#define AT91_SAMA7G5_HW_TRIG_CNT	3
+	.hw_trig_cnt = AT91_SAMA7G5_HW_TRIG_CNT,
+	.osr_mask = GENMASK(18, 16),
+	.oversampling_avail = { 1, 4, 16, 64, 256, },
+	.oversampling_avail_no = 5,
+	.chan_realbits = 16,
+	.temp_sensor = true,
+	.temp_chan = AT91_SAMA7G5_ADC_TEMP_CHANNEL,
 };
 
 static int at91_adc_chan_xlate(struct iio_dev *indio_dev, int chan)
@@ -480,57 +764,166 @@ at91_adc_chan_get(struct iio_dev *indio_dev, int chan)
 	return indio_dev->channels + index;
 }
 
-static inline int at91_adc_of_xlate(struct iio_dev *indio_dev,
-				    const struct of_phandle_args *iiospec)
+static inline int at91_adc_fwnode_xlate(struct iio_dev *indio_dev,
+					const struct fwnode_reference_args *iiospec)
 {
 	return at91_adc_chan_xlate(indio_dev, iiospec->args[0]);
 }
 
-static void at91_adc_config_emr(struct at91_adc_state *st)
+static unsigned int at91_adc_active_scan_mask_to_reg(struct iio_dev *indio_dev)
 {
-	/* configure the extended mode register */
-	unsigned int emr = at91_adc_readl(st, AT91_SAMA5D2_EMR);
+	u32 mask = 0;
+	u8 bit;
+	struct at91_adc_state *st = iio_priv(indio_dev);
 
-	/* select oversampling per single trigger event */
-	emr |= AT91_SAMA5D2_EMR_ASTE(1);
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->num_channels) {
+		struct iio_chan_spec const *chan =
+			 at91_adc_chan_get(indio_dev, bit);
+		mask |= BIT(chan->channel);
+	}
 
-	/* delete leftover content if it's the case */
-	emr &= ~AT91_SAMA5D2_EMR_OSR_MASK;
+	return mask & GENMASK(st->soc_info.platform->nr_channels, 0);
+}
+
+static void at91_adc_cor(struct at91_adc_state *st,
+			 struct iio_chan_spec const *chan)
+{
+	u32 cor, cur_cor;
+
+	cor = BIT(chan->channel) | BIT(chan->channel2);
+
+	cur_cor = at91_adc_readl(st, COR);
+	cor <<= st->soc_info.platform->layout->COR_diff_offset;
+	if (chan->differential)
+		at91_adc_writel(st, COR, cur_cor | cor);
+	else
+		at91_adc_writel(st, COR, cur_cor & ~cor);
+}
+
+static void at91_adc_irq_status(struct at91_adc_state *st, u32 *status,
+				u32 *eoc)
+{
+	*status = at91_adc_readl(st, ISR);
+	if (st->soc_info.platform->layout->EOC_ISR)
+		*eoc = at91_adc_readl(st, EOC_ISR);
+	else
+		*eoc = *status;
+}
+
+static void at91_adc_irq_mask(struct at91_adc_state *st, u32 *status, u32 *eoc)
+{
+	*status = at91_adc_readl(st, IMR);
+	if (st->soc_info.platform->layout->EOC_IMR)
+		*eoc = at91_adc_readl(st, EOC_IMR);
+	else
+		*eoc = *status;
+}
+
+static void at91_adc_eoc_dis(struct at91_adc_state *st, unsigned int channel)
+{
+	/*
+	 * On some products having the EOC bits in a separate register,
+	 * errata recommends not writing this register (EOC_IDR).
+	 * On products having the EOC bits in the IDR register, it's fine to write it.
+	 */
+	if (!st->soc_info.platform->layout->EOC_IDR)
+		at91_adc_writel(st, IDR, BIT(channel));
+}
+
+static void at91_adc_eoc_ena(struct at91_adc_state *st, unsigned int channel)
+{
+	if (!st->soc_info.platform->layout->EOC_IDR)
+		at91_adc_writel(st, IER, BIT(channel));
+	else
+		at91_adc_writel(st, EOC_IER, BIT(channel));
+}
+
+static int at91_adc_config_emr(struct at91_adc_state *st,
+			       u32 oversampling_ratio, u32 trackx)
+{
+	/* configure the extended mode register */
+	unsigned int emr, osr;
+	unsigned int osr_mask = st->soc_info.platform->osr_mask;
+	int i, ret;
+
+	/* Check against supported oversampling values. */
+	for (i = 0; i < st->soc_info.platform->oversampling_avail_no; i++) {
+		if (oversampling_ratio == st->soc_info.platform->oversampling_avail[i])
+			break;
+	}
+	if (i == st->soc_info.platform->oversampling_avail_no)
+		return -EINVAL;
 
 	/* select oversampling ratio from configuration */
-	switch (st->oversampling_ratio) {
-	case AT91_OSR_1SAMPLES:
-		emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES) &
-		       AT91_SAMA5D2_EMR_OSR_MASK;
+	switch (oversampling_ratio) {
+	case 1:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_1SAMPLES,
+					   osr_mask);
+		break;
+	case 4:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES,
+					   osr_mask);
+		break;
+	case 16:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES,
+					   osr_mask);
 		break;
-	case AT91_OSR_4SAMPLES:
-		emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_4SAMPLES) &
-		       AT91_SAMA5D2_EMR_OSR_MASK;
+	case 64:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_64SAMPLES,
+					   osr_mask);
 		break;
-	case AT91_OSR_16SAMPLES:
-		emr |= AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_16SAMPLES) &
-		       AT91_SAMA5D2_EMR_OSR_MASK;
+	case 256:
+		osr = AT91_SAMA5D2_EMR_OSR(AT91_SAMA5D2_EMR_OSR_256SAMPLES,
+					   osr_mask);
 		break;
 	}
 
-	at91_adc_writel(st, AT91_SAMA5D2_EMR, emr);
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
+	emr = at91_adc_readl(st, EMR);
+	/* select oversampling per single trigger event */
+	emr |= AT91_SAMA5D2_EMR_ASTE(1);
+	/* delete leftover content if it's the case */
+	emr &= ~(osr_mask | AT91_SAMA5D2_TRACKX_MASK);
+	/* Update osr and trackx. */
+	emr |= osr | AT91_SAMA5D2_TRACKX(trackx);
+	at91_adc_writel(st, EMR, emr);
+
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
+	st->oversampling_ratio = oversampling_ratio;
+
+	return 0;
 }
 
 static int at91_adc_adjust_val_osr(struct at91_adc_state *st, int *val)
 {
-	if (st->oversampling_ratio == AT91_OSR_1SAMPLES) {
-		/*
-		 * in this case we only have 12 bits of real data, but channel
-		 * is registered as 14 bits, so shift left two bits
-		 */
-		*val <<= 2;
-	} else if (st->oversampling_ratio == AT91_OSR_4SAMPLES) {
-		/*
-		 * in this case we have 13 bits of real data, but channel
-		 * is registered as 14 bits, so left shift one bit
-		 */
-		*val <<= 1;
-	}
+	int nbits, diff;
+
+	if (st->oversampling_ratio == 1)
+		nbits = 12;
+	else if (st->oversampling_ratio == 4)
+		nbits = 13;
+	else if (st->oversampling_ratio == 16)
+		nbits = 14;
+	else if (st->oversampling_ratio == 64)
+		nbits = 15;
+	else if (st->oversampling_ratio == 256)
+		nbits = 16;
+	else
+		/* Should not happen. */
+		return -EINVAL;
+
+	/*
+	 * We have nbits of real data and channel is registered as
+	 * st->soc_info.platform->chan_realbits, so shift left diff bits.
+	 */
+	diff = st->soc_info.platform->chan_realbits - nbits;
+	*val <<= diff;
 
 	return IIO_VAL_INT;
 }
@@ -560,15 +953,22 @@ static void at91_adc_adjust_val_osr_array(struct at91_adc_state *st, void *buf,
 static int at91_adc_configure_touch(struct at91_adc_state *st, bool state)
 {
 	u32 clk_khz = st->current_sample_rate / 1000;
-	int i = 0;
+	int i = 0, ret;
 	u16 pendbc;
 	u32 tsmr, acr;
 
-	if (!state) {
+	if (state) {
+		ret = pm_runtime_resume_and_get(st->dev);
+		if (ret < 0)
+			return ret;
+	} else {
 		/* disabling touch IRQs and setting mode to no touch enabled */
-		at91_adc_writel(st, AT91_SAMA5D2_IDR,
+		at91_adc_writel(st, IDR,
 				AT91_SAMA5D2_IER_PEN | AT91_SAMA5D2_IER_NOPEN);
-		at91_adc_writel(st, AT91_SAMA5D2_TSMR, 0);
+		at91_adc_writel(st, TSMR, 0);
+
+		pm_runtime_mark_last_busy(st->dev);
+		pm_runtime_put_autosuspend(st->dev);
 		return 0;
 	}
 	/*
@@ -594,26 +994,26 @@ static int at91_adc_configure_touch(struct at91_adc_state *st, bool state)
 	tsmr |= AT91_SAMA5D2_TSMR_PENDET_ENA;
 	tsmr |= AT91_SAMA5D2_TSMR_TSFREQ(2) & AT91_SAMA5D2_TSMR_TSFREQ_MASK;
 
-	at91_adc_writel(st, AT91_SAMA5D2_TSMR, tsmr);
+	at91_adc_writel(st, TSMR, tsmr);
 
-	acr =  at91_adc_readl(st, AT91_SAMA5D2_ACR);
+	acr =  at91_adc_readl(st, ACR);
 	acr &= ~AT91_SAMA5D2_ACR_PENDETSENS_MASK;
 	acr |= 0x02 & AT91_SAMA5D2_ACR_PENDETSENS_MASK;
-	at91_adc_writel(st, AT91_SAMA5D2_ACR, acr);
+	at91_adc_writel(st, ACR, acr);
 
 	/* Sample Period Time = (TRGPER + 1) / ADCClock */
 	st->touch_st.sample_period_val =
 				 round_up((AT91_SAMA5D2_TOUCH_SAMPLE_PERIOD_US *
 				 clk_khz / 1000) - 1, 1);
 	/* enable pen detect IRQ */
-	at91_adc_writel(st, AT91_SAMA5D2_IER, AT91_SAMA5D2_IER_PEN);
+	at91_adc_writel(st, IER, AT91_SAMA5D2_IER_PEN);
 
 	return 0;
 }
 
 static u16 at91_adc_touch_pos(struct at91_adc_state *st, int reg)
 {
-	u32 val;
+	u32 val = 0;
 	u32 scale, result, pos;
 
 	/*
@@ -622,15 +1022,19 @@ static u16 at91_adc_touch_pos(struct at91_adc_state *st, int reg)
 	 * max = 2^AT91_SAMA5D2_MAX_POS_BITS - 1
 	 */
 	/* first half of register is the x or y, second half is the scale */
-	val = at91_adc_readl(st, reg);
+	if (reg == st->soc_info.platform->layout->XPOSR)
+		val = at91_adc_readl(st, XPOSR);
+	else if (reg == st->soc_info.platform->layout->YPOSR)
+		val = at91_adc_readl(st, YPOSR);
+
 	if (!val)
-		dev_dbg(&iio_priv_to_dev(st)->dev, "pos is 0\n");
+		dev_dbg(&st->indio_dev->dev, "pos is 0\n");
 
 	pos = val & AT91_SAMA5D2_XYZ_MASK;
 	result = (pos << AT91_SAMA5D2_MAX_POS_BITS) - pos;
 	scale = (val >> 16) & AT91_SAMA5D2_XYZ_MASK;
 	if (scale == 0) {
-		dev_err(&iio_priv_to_dev(st)->dev, "scale is 0\n");
+		dev_err(&st->indio_dev->dev, "scale is 0\n");
 		return 0;
 	}
 	result /= scale;
@@ -640,13 +1044,13 @@ static u16 at91_adc_touch_pos(struct at91_adc_state *st, int reg)
 
 static u16 at91_adc_touch_x_pos(struct at91_adc_state *st)
 {
-	st->touch_st.x_pos = at91_adc_touch_pos(st, AT91_SAMA5D2_XPOSR);
+	st->touch_st.x_pos = at91_adc_touch_pos(st, st->soc_info.platform->layout->XPOSR);
 	return st->touch_st.x_pos;
 }
 
 static u16 at91_adc_touch_y_pos(struct at91_adc_state *st)
 {
-	return at91_adc_touch_pos(st, AT91_SAMA5D2_YPOSR);
+	return at91_adc_touch_pos(st, st->soc_info.platform->layout->YPOSR);
 }
 
 static u16 at91_adc_touch_pressure(struct at91_adc_state *st)
@@ -658,7 +1062,7 @@ static u16 at91_adc_touch_pressure(struct at91_adc_state *st)
 	u32 factor = 1000;
 
 	/* calculate the pressure */
-	val = at91_adc_readl(st, AT91_SAMA5D2_PRESSR);
+	val = at91_adc_readl(st, PRESSR);
 	z1 = val & AT91_SAMA5D2_XYZ_MASK;
 	z2 = (val >> 16) & AT91_SAMA5D2_XYZ_MASK;
 
@@ -682,9 +1086,9 @@ static int at91_adc_read_position(struct at91_adc_state *st, int chan, u16 *val)
 	*val = 0;
 	if (!st->touch_st.touching)
 		return -ENODATA;
-	if (chan == AT91_SAMA5D2_TOUCH_X_CHAN_IDX)
+	if (chan == st->soc_info.platform->touch_chan_x)
 		*val = at91_adc_touch_x_pos(st);
-	else if (chan == AT91_SAMA5D2_TOUCH_Y_CHAN_IDX)
+	else if (chan == st->soc_info.platform->touch_chan_y)
 		*val = at91_adc_touch_y_pos(st);
 	else
 		return -ENODATA;
@@ -697,7 +1101,7 @@ static int at91_adc_read_pressure(struct at91_adc_state *st, int chan, u16 *val)
 	*val = 0;
 	if (!st->touch_st.touching)
 		return -ENODATA;
-	if (chan == AT91_SAMA5D2_TOUCH_P_CHAN_IDX)
+	if (chan == st->soc_info.platform->touch_chan_p)
 		*val = at91_adc_touch_pressure(st);
 	else
 		return -ENODATA;
@@ -705,12 +1109,10 @@ static int at91_adc_read_pressure(struct at91_adc_state *st, int chan, u16 *val)
 	return IIO_VAL_INT;
 }
 
-static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
+static void at91_adc_configure_trigger_registers(struct at91_adc_state *st,
+						 bool state)
 {
-	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
-	struct at91_adc_state *st = iio_priv(indio);
-	u32 status = at91_adc_readl(st, AT91_SAMA5D2_TRGR);
-	u8 bit;
+	u32 status = at91_adc_readl(st, TRGR);
 
 	/* clear TRGMOD */
 	status &= ~AT91_SAMA5D2_TRGR_TRGMOD_MASK;
@@ -719,74 +1121,49 @@ static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
 		status |= st->selected_trig->trgmod_value;
 
 	/* set/unset hw trigger */
-	at91_adc_writel(st, AT91_SAMA5D2_TRGR, status);
-
-	for_each_set_bit(bit, indio->active_scan_mask, indio->num_channels) {
-		struct iio_chan_spec const *chan = at91_adc_chan_get(indio, bit);
-		u32 cor;
-
-		if (!chan)
-			continue;
-		/* these channel types cannot be handled by this trigger */
-		if (chan->type == IIO_POSITIONRELATIVE ||
-		    chan->type == IIO_PRESSURE)
-			continue;
+	at91_adc_writel(st, TRGR, status);
+}
 
-		if (state) {
-			cor = at91_adc_readl(st, AT91_SAMA5D2_COR);
+static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
+	struct at91_adc_state *st = iio_priv(indio);
+	int ret;
 
-			if (chan->differential)
-				cor |= (BIT(chan->channel) |
-					BIT(chan->channel2)) <<
-					AT91_SAMA5D2_COR_DIFF_OFFSET;
-			else
-				cor &= ~(BIT(chan->channel) <<
-				       AT91_SAMA5D2_COR_DIFF_OFFSET);
+	if (state) {
+		ret = pm_runtime_resume_and_get(st->dev);
+		if (ret < 0)
+			return ret;
+	}
 
-			at91_adc_writel(st, AT91_SAMA5D2_COR, cor);
-		}
+	at91_adc_configure_trigger_registers(st, state);
 
-		if (state) {
-			at91_adc_writel(st, AT91_SAMA5D2_CHER,
-					BIT(chan->channel));
-			/* enable irq only if not using DMA */
-			if (!st->dma_st.dma_chan) {
-				at91_adc_writel(st, AT91_SAMA5D2_IER,
-						BIT(chan->channel));
-			}
-		} else {
-			/* disable irq only if not using DMA */
-			if (!st->dma_st.dma_chan) {
-				at91_adc_writel(st, AT91_SAMA5D2_IDR,
-						BIT(chan->channel));
-			}
-			at91_adc_writel(st, AT91_SAMA5D2_CHDR,
-					BIT(chan->channel));
-		}
+	if (!state) {
+		pm_runtime_mark_last_busy(st->dev);
+		pm_runtime_put_autosuspend(st->dev);
 	}
 
 	return 0;
 }
 
-static int at91_adc_reenable_trigger(struct iio_trigger *trig)
+static void at91_adc_reenable_trigger(struct iio_trigger *trig)
 {
 	struct iio_dev *indio = iio_trigger_get_drvdata(trig);
 	struct at91_adc_state *st = iio_priv(indio);
 
 	/* if we are using DMA, we must not reenable irq after each trigger */
 	if (st->dma_st.dma_chan)
-		return 0;
+		return;
 
 	enable_irq(st->irq);
 
 	/* Needed to ACK the DRDY interruption */
-	at91_adc_readl(st, AT91_SAMA5D2_LCDR);
-	return 0;
+	at91_adc_readl(st, LCDR);
 }
 
 static const struct iio_trigger_ops at91_adc_trigger_ops = {
 	.set_trigger_state = &at91_adc_configure_trigger,
-	.try_reenable = &at91_adc_reenable_trigger,
+	.reenable = &at91_adc_reenable_trigger,
 	.validate_device = iio_trigger_validate_own_device,
 };
 
@@ -876,7 +1253,7 @@ static int at91_adc_dma_start(struct iio_dev *indio_dev)
 	}
 
 	/* enable general overrun error signaling */
-	at91_adc_writel(st, AT91_SAMA5D2_IER, AT91_SAMA5D2_IER_GOVRE);
+	at91_adc_writel(st, IER, AT91_SAMA5D2_IER_GOVRE);
 	/* Issue pending DMA requests */
 	dma_async_issue_pending(st->dma_st.dma_chan);
 
@@ -888,64 +1265,101 @@ static int at91_adc_dma_start(struct iio_dev *indio_dev)
 	return 0;
 }
 
-static int at91_adc_buffer_postenable(struct iio_dev *indio_dev)
+static bool at91_adc_buffer_check_use_irq(struct iio_dev *indio,
+					  struct at91_adc_state *st)
+{
+	/* if using DMA, we do not use our own IRQ (we use DMA-controller) */
+	if (st->dma_st.dma_chan)
+		return false;
+	/* if the trigger is not ours, then it has its own IRQ */
+	if (iio_trigger_validate_own_device(indio->trig, indio))
+		return false;
+	return true;
+}
+
+static bool at91_adc_current_chan_is_touch(struct iio_dev *indio_dev)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	return !!bitmap_subset(indio_dev->active_scan_mask,
+			       &st->touch_st.channels_bitmask,
+			       st->soc_info.platform->max_index + 1);
+}
+
+static int at91_adc_buffer_prepare(struct iio_dev *indio_dev)
 {
 	int ret;
+	u8 bit;
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
 	/* check if we are enabling triggered buffer or the touchscreen */
-	if (bitmap_subset(indio_dev->active_scan_mask,
-			  &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1)) {
-		/* touchscreen enabling */
+	if (at91_adc_current_chan_is_touch(indio_dev))
 		return at91_adc_configure_touch(st, true);
-	}
+
 	/* if we are not in triggered mode, we cannot enable the buffer. */
-	if (!(indio_dev->currentmode & INDIO_ALL_TRIGGERED_MODES))
+	if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES))
 		return -EINVAL;
 
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
 	/* we continue with the triggered buffer */
 	ret = at91_adc_dma_start(indio_dev);
 	if (ret) {
-		dev_err(&indio_dev->dev, "buffer postenable failed\n");
-		return ret;
+		dev_err(&indio_dev->dev, "buffer prepare failed\n");
+		goto pm_runtime_put;
 	}
 
-	return iio_triggered_buffer_postenable(indio_dev);
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->num_channels) {
+		struct iio_chan_spec const *chan =
+					at91_adc_chan_get(indio_dev, bit);
+		if (!chan)
+			continue;
+		/* these channel types cannot be handled by this trigger */
+		if (chan->type == IIO_POSITIONRELATIVE ||
+		    chan->type == IIO_PRESSURE ||
+		    chan->type == IIO_TEMP)
+			continue;
+
+		at91_adc_cor(st, chan);
+
+		at91_adc_writel(st, CHER, BIT(chan->channel));
+	}
+
+	if (at91_adc_buffer_check_use_irq(indio_dev, st))
+		at91_adc_writel(st, IER, AT91_SAMA5D2_IER_DRDY);
+
+pm_runtime_put:
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+	return ret;
 }
 
-static int at91_adc_buffer_predisable(struct iio_dev *indio_dev)
+static int at91_adc_buffer_postdisable(struct iio_dev *indio_dev)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
 	int ret;
 	u8 bit;
 
 	/* check if we are disabling triggered buffer or the touchscreen */
-	if (bitmap_subset(indio_dev->active_scan_mask,
-			  &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1)) {
-		/* touchscreen disable */
+	if (at91_adc_current_chan_is_touch(indio_dev))
 		return at91_adc_configure_touch(st, false);
-	}
+
 	/* if we are not in triggered mode, nothing to do here */
-	if (!(indio_dev->currentmode & INDIO_ALL_TRIGGERED_MODES))
+	if (!(iio_device_get_current_mode(indio_dev) & INDIO_ALL_TRIGGERED_MODES))
 		return -EINVAL;
 
-	/* continue with the triggered buffer */
-	ret = iio_triggered_buffer_predisable(indio_dev);
+	ret = pm_runtime_resume_and_get(st->dev);
 	if (ret < 0)
-		dev_err(&indio_dev->dev, "buffer predisable failed\n");
-
-	if (!st->dma_st.dma_chan)
 		return ret;
 
-	/* if we are using DMA we must clear registers and end DMA */
-	dmaengine_terminate_sync(st->dma_st.dma_chan);
-
 	/*
-	 * For each enabled channel we must read the last converted value
+	 * For each enable channel we must disable it in hardware.
+	 * In the case of DMA, we must read the last converted value
 	 * to clear EOC status and not get a possible interrupt later.
-	 * This value is being read by DMA from LCDR anyway
+	 * This value is being read by DMA from LCDR anyway, so it's not lost.
 	 */
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
 			 indio_dev->num_channels) {
@@ -956,20 +1370,34 @@ static int at91_adc_buffer_predisable(struct iio_dev *indio_dev)
 			continue;
 		/* these channel types are virtual, no need to do anything */
 		if (chan->type == IIO_POSITIONRELATIVE ||
-		    chan->type == IIO_PRESSURE)
+		    chan->type == IIO_PRESSURE ||
+		    chan->type == IIO_TEMP)
 			continue;
+
+		at91_adc_writel(st, CHDR, BIT(chan->channel));
+
 		if (st->dma_st.dma_chan)
-			at91_adc_readl(st, chan->address);
+			at91_adc_read_chan(st, chan->address);
 	}
 
+	if (at91_adc_buffer_check_use_irq(indio_dev, st))
+		at91_adc_writel(st, IDR, AT91_SAMA5D2_IER_DRDY);
+
 	/* read overflow register to clear possible overflow status */
-	at91_adc_readl(st, AT91_SAMA5D2_OVER);
-	return ret;
+	at91_adc_readl(st, OVER);
+
+	/* if we are using DMA we must clear registers and end DMA */
+	if (st->dma_st.dma_chan)
+		dmaengine_terminate_sync(st->dma_st.dma_chan);
+
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
+	return 0;
 }
 
 static const struct iio_buffer_setup_ops at91_buffer_setup_ops = {
-	.postenable = &at91_adc_buffer_postenable,
-	.predisable = &at91_adc_buffer_predisable,
+	.postdisable = &at91_adc_buffer_postdisable,
 };
 
 static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *indio,
@@ -979,7 +1407,7 @@ static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *indio,
 	int ret;
 
 	trig = devm_iio_trigger_alloc(&indio->dev, "%s-dev%d-%s", indio->name,
-				      indio->id, trigger_name);
+				iio_device_id(indio), trigger_name);
 	if (!trig)
 		return NULL;
 
@@ -994,20 +1422,6 @@ static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *indio,
 	return trig;
 }
 
-static int at91_adc_trigger_init(struct iio_dev *indio)
-{
-	struct at91_adc_state *st = iio_priv(indio);
-
-	st->trig = at91_adc_allocate_trigger(indio, st->selected_trig->name);
-	if (IS_ERR(st->trig)) {
-		dev_err(&indio->dev,
-			"could not allocate trigger\n");
-		return PTR_ERR(st->trig);
-	}
-
-	return 0;
-}
-
 static void at91_adc_trigger_handler_nodma(struct iio_dev *indio_dev,
 					   struct iio_poll_func *pf)
 {
@@ -1015,6 +1429,24 @@ static void at91_adc_trigger_handler_nodma(struct iio_dev *indio_dev,
 	int i = 0;
 	int val;
 	u8 bit;
+	u32 mask = at91_adc_active_scan_mask_to_reg(indio_dev);
+	unsigned int timeout = 50;
+	u32 status, imr, eoc = 0, eoc_imr;
+
+	/*
+	 * Check if the conversion is ready. If not, wait a little bit, and
+	 * in case of timeout exit with an error.
+	 */
+	while (((eoc & mask) != mask) && timeout) {
+		at91_adc_irq_status(st, &status, &eoc);
+		at91_adc_irq_mask(st, &imr, &eoc_imr);
+		usleep_range(50, 100);
+		timeout--;
+	}
+
+	/* Cannot read data, not ready. Continue without reporting data */
+	if (!timeout)
+		return;
 
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
 			 indio_dev->num_channels) {
@@ -1034,7 +1466,7 @@ static void at91_adc_trigger_handler_nodma(struct iio_dev *indio_dev,
 		 * Thus, emit a warning.
 		 */
 		if (chan->type == IIO_VOLTAGE) {
-			val = at91_adc_readl(st, chan->address);
+			val = at91_adc_read_chan(st, chan->address);
 			at91_adc_adjust_val_osr(st, &val);
 			st->buffer[i] = val;
 		} else {
@@ -1055,7 +1487,7 @@ static void at91_adc_trigger_handler_dma(struct iio_dev *indio_dev)
 	s64 interval;
 	int sample_index = 0, sample_count, sample_size;
 
-	u32 status = at91_adc_readl(st, AT91_SAMA5D2_ISR);
+	u32 status = at91_adc_readl(st, ISR);
 	/* if we reached this point, we cannot sample faster */
 	if (status & AT91_SAMA5D2_IER_GOVRE)
 		pr_info_ratelimited("%s: conversion overrun detected\n",
@@ -1102,6 +1534,13 @@ static irqreturn_t at91_adc_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
+	/*
+	 * If it's not our trigger, start a conversion now, as we are
+	 * actually polling the trigger now.
+	 */
+	if (iio_trigger_validate_own_device(indio_dev->trig, indio_dev))
+		at91_adc_writel(st, CR, AT91_SAMA5D2_CR_START);
+
 	if (st->dma_st.dma_chan)
 		at91_adc_trigger_handler_dma(indio_dev);
 	else
@@ -1112,24 +1551,6 @@ static irqreturn_t at91_adc_trigger_handler(int irq, void *p)
 	return IRQ_HANDLED;
 }
 
-static int at91_adc_buffer_init(struct iio_dev *indio)
-{
-	struct at91_adc_state *st = iio_priv(indio);
-
-	if (st->selected_trig->hw_trig) {
-		return devm_iio_triggered_buffer_setup(&indio->dev, indio,
-			&iio_pollfunc_store_time,
-			&at91_adc_trigger_handler, &at91_buffer_setup_ops);
-	}
-	/*
-	 * we need to prepare the buffer ops in case we will get
-	 * another buffer attached (like a callback buffer for the touchscreen)
-	 */
-	indio->setup_ops = &at91_buffer_setup_ops;
-
-	return 0;
-}
-
 static unsigned at91_adc_startup_time(unsigned startup_time_min,
 				      unsigned adc_clk_khz)
 {
@@ -1154,25 +1575,35 @@ static unsigned at91_adc_startup_time(unsigned startup_time_min,
 	return i;
 }
 
-static void at91_adc_setup_samp_freq(struct at91_adc_state *st, unsigned freq)
+static void at91_adc_setup_samp_freq(struct iio_dev *indio_dev, unsigned freq,
+				     unsigned int startup_time,
+				     unsigned int tracktim)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(st);
+	struct at91_adc_state *st = iio_priv(indio_dev);
 	unsigned f_per, prescal, startup, mr;
+	int ret;
 
 	f_per = clk_get_rate(st->per_clk);
 	prescal = (f_per / (2 * freq)) - 1;
 
-	startup = at91_adc_startup_time(st->soc_info.startup_time,
-					freq / 1000);
+	startup = at91_adc_startup_time(startup_time, freq / 1000);
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return;
 
-	mr = at91_adc_readl(st, AT91_SAMA5D2_MR);
+	mr = at91_adc_readl(st, MR);
 	mr &= ~(AT91_SAMA5D2_MR_STARTUP_MASK | AT91_SAMA5D2_MR_PRESCAL_MASK);
 	mr |= AT91_SAMA5D2_MR_STARTUP(startup);
 	mr |= AT91_SAMA5D2_MR_PRESCAL(prescal);
-	at91_adc_writel(st, AT91_SAMA5D2_MR, mr);
+	mr |= AT91_SAMA5D2_MR_TRACKTIM(tracktim);
+	at91_adc_writel(st, MR, mr);
 
-	dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u\n",
-		freq, startup, prescal);
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
+	dev_dbg(&indio_dev->dev, "freq: %u, startup: %u, prescal: %u, tracktim=%u\n",
+		freq, startup, prescal, tracktim);
 	st->current_sample_rate = freq;
 }
 
@@ -1189,7 +1620,7 @@ static void at91_adc_touch_data_handler(struct iio_dev *indio_dev)
 	int i = 0;
 
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
-			 AT91_SAMA5D2_MAX_CHAN_IDX + 1) {
+			 st->soc_info.platform->max_index + 1) {
 		struct iio_chan_spec const *chan =
 					 at91_adc_chan_get(indio_dev, bit);
 
@@ -1215,30 +1646,28 @@ static void at91_adc_touch_data_handler(struct iio_dev *indio_dev)
 
 static void at91_adc_pen_detect_interrupt(struct at91_adc_state *st)
 {
-	at91_adc_writel(st, AT91_SAMA5D2_IDR, AT91_SAMA5D2_IER_PEN);
-	at91_adc_writel(st, AT91_SAMA5D2_IER, AT91_SAMA5D2_IER_NOPEN |
+	at91_adc_writel(st, IDR, AT91_SAMA5D2_IER_PEN);
+	at91_adc_writel(st, IER, AT91_SAMA5D2_IER_NOPEN |
 			AT91_SAMA5D2_IER_XRDY | AT91_SAMA5D2_IER_YRDY |
 			AT91_SAMA5D2_IER_PRDY);
-	at91_adc_writel(st, AT91_SAMA5D2_TRGR,
-			AT91_SAMA5D2_TRGR_TRGMOD_PERIODIC |
+	at91_adc_writel(st, TRGR, AT91_SAMA5D2_TRGR_TRGMOD_PERIODIC |
 			AT91_SAMA5D2_TRGR_TRGPER(st->touch_st.sample_period_val));
 	st->touch_st.touching = true;
 }
 
-static void at91_adc_no_pen_detect_interrupt(struct at91_adc_state *st)
+static void at91_adc_no_pen_detect_interrupt(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(st);
+	struct at91_adc_state *st = iio_priv(indio_dev);
 
-	at91_adc_writel(st, AT91_SAMA5D2_TRGR,
-			AT91_SAMA5D2_TRGR_TRGMOD_NO_TRIGGER);
-	at91_adc_writel(st, AT91_SAMA5D2_IDR, AT91_SAMA5D2_IER_NOPEN |
+	at91_adc_writel(st, TRGR, AT91_SAMA5D2_TRGR_TRGMOD_NO_TRIGGER);
+	at91_adc_writel(st, IDR, AT91_SAMA5D2_IER_NOPEN |
 			AT91_SAMA5D2_IER_XRDY | AT91_SAMA5D2_IER_YRDY |
 			AT91_SAMA5D2_IER_PRDY);
 	st->touch_st.touching = false;
 
 	at91_adc_touch_data_handler(indio_dev);
 
-	at91_adc_writel(st, AT91_SAMA5D2_IER, AT91_SAMA5D2_IER_PEN);
+	at91_adc_writel(st, IER, AT91_SAMA5D2_IER_PEN);
 }
 
 static void at91_adc_workq_handler(struct work_struct *workq)
@@ -1247,7 +1676,7 @@ static void at91_adc_workq_handler(struct work_struct *workq)
 					struct at91_adc_touch, workq);
 	struct at91_adc_state *st = container_of(touch_st,
 					struct at91_adc_state, touch_st);
-	struct iio_dev *indio_dev = iio_priv_to_dev(st);
+	struct iio_dev *indio_dev = st->indio_dev;
 
 	iio_push_to_buffers(indio_dev, st->buffer);
 }
@@ -1256,19 +1685,21 @@ static irqreturn_t at91_adc_interrupt(int irq, void *private)
 {
 	struct iio_dev *indio = private;
 	struct at91_adc_state *st = iio_priv(indio);
-	u32 status = at91_adc_readl(st, AT91_SAMA5D2_ISR);
-	u32 imr = at91_adc_readl(st, AT91_SAMA5D2_IMR);
+	u32 status, eoc, imr, eoc_imr;
 	u32 rdy_mask = AT91_SAMA5D2_IER_XRDY | AT91_SAMA5D2_IER_YRDY |
 			AT91_SAMA5D2_IER_PRDY;
 
-	if (!(status & imr))
+	at91_adc_irq_status(st, &status, &eoc);
+	at91_adc_irq_mask(st, &imr, &eoc_imr);
+
+	if (!(status & imr) && !(eoc & eoc_imr))
 		return IRQ_NONE;
 	if (status & AT91_SAMA5D2_IER_PEN) {
 		/* pen detected IRQ */
 		at91_adc_pen_detect_interrupt(st);
 	} else if ((status & AT91_SAMA5D2_IER_NOPEN)) {
 		/* nopen detected IRQ */
-		at91_adc_no_pen_detect_interrupt(st);
+		at91_adc_no_pen_detect_interrupt(indio);
 	} else if ((status & AT91_SAMA5D2_ISR_PENS) &&
 		   ((status & rdy_mask) == rdy_mask)) {
 		/* periodic trigger IRQ - during pen sense */
@@ -1278,10 +1709,11 @@ static irqreturn_t at91_adc_interrupt(int irq, void *private)
 		 * touching, but the measurements are not ready yet.
 		 * read and ignore.
 		 */
-		status = at91_adc_readl(st, AT91_SAMA5D2_XPOSR);
-		status = at91_adc_readl(st, AT91_SAMA5D2_YPOSR);
-		status = at91_adc_readl(st, AT91_SAMA5D2_PRESSR);
-	} else if (iio_buffer_enabled(indio) && !st->dma_st.dma_chan) {
+		status = at91_adc_readl(st, XPOSR);
+		status = at91_adc_readl(st, YPOSR);
+		status = at91_adc_readl(st, PRESSR);
+	} else if (iio_buffer_enabled(indio) &&
+		   (status & AT91_SAMA5D2_IER_DRDY)) {
 		/* triggered buffer without DMA */
 		disable_irq_nosync(irq);
 		iio_trigger_poll(indio->trig);
@@ -1291,71 +1723,63 @@ static irqreturn_t at91_adc_interrupt(int irq, void *private)
 		WARN(true, "Unexpected irq occurred\n");
 	} else if (!iio_buffer_enabled(indio)) {
 		/* software requested conversion */
-		st->conversion_value = at91_adc_readl(st, st->chan->address);
+		st->conversion_value = at91_adc_read_chan(st, st->chan->address);
 		st->conversion_done = true;
 		wake_up_interruptible(&st->wq_data_available);
 	}
 	return IRQ_HANDLED;
 }
 
+/* This needs to be called with direct mode claimed and st->lock locked. */
 static int at91_adc_read_info_raw(struct iio_dev *indio_dev,
 				  struct iio_chan_spec const *chan, int *val)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
-	u32 cor = 0;
 	u16 tmp_val;
 	int ret;
 
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
 	/*
 	 * Keep in mind that we cannot use software trigger or touchscreen
 	 * if external trigger is enabled
 	 */
 	if (chan->type == IIO_POSITIONRELATIVE) {
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
-		mutex_lock(&st->lock);
-
 		ret = at91_adc_read_position(st, chan->channel,
 					     &tmp_val);
 		*val = tmp_val;
-		mutex_unlock(&st->lock);
-		iio_device_release_direct_mode(indio_dev);
+		if (ret > 0)
+			ret = at91_adc_adjust_val_osr(st, val);
 
-		return at91_adc_adjust_val_osr(st, val);
+		goto pm_runtime_put;
 	}
 	if (chan->type == IIO_PRESSURE) {
-		ret = iio_device_claim_direct_mode(indio_dev);
-		if (ret)
-			return ret;
-		mutex_lock(&st->lock);
-
 		ret = at91_adc_read_pressure(st, chan->channel,
 					     &tmp_val);
 		*val = tmp_val;
-		mutex_unlock(&st->lock);
-		iio_device_release_direct_mode(indio_dev);
+		if (ret > 0)
+			ret = at91_adc_adjust_val_osr(st, val);
 
-		return at91_adc_adjust_val_osr(st, val);
+		goto pm_runtime_put;
 	}
 
-	/* in this case we have a voltage channel */
-
-	ret = iio_device_claim_direct_mode(indio_dev);
-	if (ret)
-		return ret;
-	mutex_lock(&st->lock);
+	/* in this case we have a voltage or temperature channel */
 
 	st->chan = chan;
 
-	if (chan->differential)
-		cor = (BIT(chan->channel) | BIT(chan->channel2)) <<
-		      AT91_SAMA5D2_COR_DIFF_OFFSET;
-
-	at91_adc_writel(st, AT91_SAMA5D2_COR, cor);
-	at91_adc_writel(st, AT91_SAMA5D2_CHER, BIT(chan->channel));
-	at91_adc_writel(st, AT91_SAMA5D2_IER, BIT(chan->channel));
-	at91_adc_writel(st, AT91_SAMA5D2_CR, AT91_SAMA5D2_CR_START);
+	at91_adc_cor(st, chan);
+	at91_adc_writel(st, CHER, BIT(chan->channel));
+	/*
+	 * TEMPMR.TEMPON needs to update after CHER otherwise if none
+	 * of the channels are enabled and TEMPMR.TEMPON = 1 will
+	 * trigger DRDY interruption while preparing for temperature read.
+	 */
+	if (chan->type == IIO_TEMP)
+		at91_adc_writel(st, TEMPMR, AT91_SAMA5D2_TEMPMR_TEMPON);
+	at91_adc_eoc_ena(st, chan->channel);
+	at91_adc_writel(st, CR, AT91_SAMA5D2_CR_START);
 
 	ret = wait_event_interruptible_timeout(st->wq_data_available,
 					       st->conversion_done,
@@ -1367,19 +1791,131 @@ static int at91_adc_read_info_raw(struct iio_dev *indio_dev,
 		*val = st->conversion_value;
 		ret = at91_adc_adjust_val_osr(st, val);
 		if (chan->scan_type.sign == 's')
-			*val = sign_extend32(*val, 11);
+			*val = sign_extend32(*val,
+					     chan->scan_type.realbits - 1);
 		st->conversion_done = false;
 	}
 
-	at91_adc_writel(st, AT91_SAMA5D2_IDR, BIT(chan->channel));
-	at91_adc_writel(st, AT91_SAMA5D2_CHDR, BIT(chan->channel));
+	at91_adc_eoc_dis(st, st->chan->channel);
+	if (chan->type == IIO_TEMP)
+		at91_adc_writel(st, TEMPMR, 0U);
+	at91_adc_writel(st, CHDR, BIT(chan->channel));
 
 	/* Needed to ACK the DRDY interruption */
-	at91_adc_readl(st, AT91_SAMA5D2_LCDR);
+	at91_adc_readl(st, LCDR);
 
+pm_runtime_put:
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+	return ret;
+}
+
+static int at91_adc_read_info_locked(struct iio_dev *indio_dev,
+				     struct iio_chan_spec const *chan, int *val)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+	ret = at91_adc_read_info_raw(indio_dev, chan, val);
 	mutex_unlock(&st->lock);
 
 	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static void at91_adc_temp_sensor_configure(struct at91_adc_state *st,
+					   bool start)
+{
+	u32 sample_rate, oversampling_ratio;
+	u32 startup_time, tracktim, trackx;
+
+	if (start) {
+		/*
+		 * Configure the sensor for best accuracy: 10MHz frequency,
+		 * oversampling rate of 256, tracktim=0xf and trackx=1.
+		 */
+		sample_rate = 10 * MEGA;
+		oversampling_ratio = 256;
+		startup_time = AT91_SAMA5D2_MR_STARTUP_TS_MIN;
+		tracktim = AT91_SAMA5D2_MR_TRACKTIM_TS;
+		trackx = AT91_SAMA5D2_TRACKX_TS;
+
+		st->temp_st.saved_sample_rate = st->current_sample_rate;
+		st->temp_st.saved_oversampling = st->oversampling_ratio;
+	} else {
+		/* Go back to previous settings. */
+		sample_rate = st->temp_st.saved_sample_rate;
+		oversampling_ratio = st->temp_st.saved_oversampling;
+		startup_time = st->soc_info.startup_time;
+		tracktim = 0;
+		trackx = 0;
+	}
+
+	at91_adc_setup_samp_freq(st->indio_dev, sample_rate, startup_time,
+				 tracktim);
+	at91_adc_config_emr(st, oversampling_ratio, trackx);
+}
+
+static int at91_adc_read_temp(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan, int *val)
+{
+	struct at91_adc_state *st = iio_priv(indio_dev);
+	struct at91_adc_temp_sensor_clb *clb = &st->soc_info.temp_sensor_clb;
+	u64 div1, div2;
+	u32 tmp;
+	int ret, vbg, vtemp;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+	mutex_lock(&st->lock);
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		goto unlock;
+
+	at91_adc_temp_sensor_configure(st, true);
+
+	/* Read VBG. */
+	tmp = at91_adc_readl(st, ACR);
+	tmp |= AT91_SAMA5D2_ACR_SRCLCH;
+	at91_adc_writel(st, ACR, tmp);
+	ret = at91_adc_read_info_raw(indio_dev, chan, &vbg);
+	if (ret < 0)
+		goto restore_config;
+
+	/* Read VTEMP. */
+	tmp &= ~AT91_SAMA5D2_ACR_SRCLCH;
+	at91_adc_writel(st, ACR, tmp);
+	ret = at91_adc_read_info_raw(indio_dev, chan, &vtemp);
+
+restore_config:
+	/* Revert previous settings. */
+	at91_adc_temp_sensor_configure(st, false);
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+unlock:
+	mutex_unlock(&st->lock);
+	iio_device_release_direct_mode(indio_dev);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Temp[milli] = p1[milli] + (vtemp * clb->p6 - clb->p4 * vbg)/
+	 *			     (vbg * AT91_ADC_TS_VTEMP_DT)
+	 */
+	div1 = DIV_ROUND_CLOSEST_ULL(((u64)vtemp * clb->p6), vbg);
+	div1 = DIV_ROUND_CLOSEST_ULL((div1 * 1000), AT91_ADC_TS_VTEMP_DT);
+	div2 = DIV_ROUND_CLOSEST_ULL((u64)clb->p4, AT91_ADC_TS_VTEMP_DT);
+	div2 *= 1000;
+	*val = clb->p1 + (int)div1 - (int)div2;
+
 	return ret;
 }
 
@@ -1391,7 +1927,8 @@ static int at91_adc_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		return at91_adc_read_info_raw(indio_dev, chan, val);
+		return at91_adc_read_info_locked(indio_dev, chan, val);
+
 	case IIO_CHAN_INFO_SCALE:
 		*val = st->vref_uv / 1000;
 		if (chan->differential)
@@ -1399,6 +1936,11 @@ static int at91_adc_read_raw(struct iio_dev *indio_dev,
 		*val2 = chan->scan_type.realbits;
 		return IIO_VAL_FRACTIONAL_LOG2;
 
+	case IIO_CHAN_INFO_PROCESSED:
+		if (chan->type != IIO_TEMP)
+			return -EINVAL;
+		return at91_adc_read_temp(indio_dev, chan, val);
+
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		*val = at91_adc_get_sample_freq(st);
 		return IIO_VAL_INT;
@@ -1417,51 +1959,80 @@ static int at91_adc_write_raw(struct iio_dev *indio_dev,
 			      int val, int val2, long mask)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
-		if ((val != AT91_OSR_1SAMPLES) && (val != AT91_OSR_4SAMPLES) &&
-		    (val != AT91_OSR_16SAMPLES))
-			return -EINVAL;
 		/* if no change, optimize out */
 		if (val == st->oversampling_ratio)
 			return 0;
-		st->oversampling_ratio = val;
+
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&st->lock);
 		/* update ratio */
-		at91_adc_config_emr(st);
-		return 0;
+		ret = at91_adc_config_emr(st, val, 0);
+		mutex_unlock(&st->lock);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val < st->soc_info.min_sample_rate ||
 		    val > st->soc_info.max_sample_rate)
 			return -EINVAL;
 
-		at91_adc_setup_samp_freq(st, val);
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&st->lock);
+		at91_adc_setup_samp_freq(indio_dev, val,
+					 st->soc_info.startup_time, 0);
+		mutex_unlock(&st->lock);
+		iio_device_release_direct_mode(indio_dev);
 		return 0;
 	default:
 		return -EINVAL;
-	};
+	}
 }
 
-static void at91_adc_dma_init(struct platform_device *pdev)
+static int at91_adc_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
 {
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
 	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*vals = (int *)st->soc_info.platform->oversampling_avail;
+		*type = IIO_VAL_INT;
+		*length = st->soc_info.platform->oversampling_avail_no;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static void at91_adc_dma_init(struct at91_adc_state *st)
+{
+	struct device *dev = &st->indio_dev->dev;
 	struct dma_slave_config config = {0};
+	/* we have 2 bytes for each channel */
+	unsigned int sample_size = st->soc_info.platform->nr_channels * 2;
 	/*
 	 * We make the buffer double the size of the fifo,
 	 * such that DMA uses one half of the buffer (full fifo size)
 	 * and the software uses the other half to read/write.
 	 */
 	unsigned int pages = DIV_ROUND_UP(AT91_HWFIFO_MAX_SIZE *
-					  AT91_BUFFER_MAX_CONVERSION_BYTES * 2,
-					  PAGE_SIZE);
+					  sample_size * 2, PAGE_SIZE);
 
 	if (st->dma_st.dma_chan)
 		return;
 
-	st->dma_st.dma_chan = dma_request_chan(&pdev->dev, "rx");
+	st->dma_st.dma_chan = dma_request_chan(dev, "rx");
 	if (IS_ERR(st->dma_st.dma_chan))  {
-		dev_info(&pdev->dev, "can't get DMA channel\n");
+		dev_info(dev, "can't get DMA channel\n");
 		st->dma_st.dma_chan = NULL;
 		goto dma_exit;
 	}
@@ -1471,24 +2042,24 @@ static void at91_adc_dma_init(struct platform_device *pdev)
 					       &st->dma_st.rx_dma_buf,
 					       GFP_KERNEL);
 	if (!st->dma_st.rx_buf) {
-		dev_info(&pdev->dev, "can't allocate coherent DMA area\n");
+		dev_info(dev, "can't allocate coherent DMA area\n");
 		goto dma_chan_disable;
 	}
 
 	/* Configure DMA channel to read data register */
 	config.direction = DMA_DEV_TO_MEM;
 	config.src_addr = (phys_addr_t)(st->dma_st.phys_addr
-			  + AT91_SAMA5D2_LCDR);
+			  + st->soc_info.platform->layout->LCDR);
 	config.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES;
 	config.src_maxburst = 1;
 	config.dst_maxburst = 1;
 
 	if (dmaengine_slave_config(st->dma_st.dma_chan, &config)) {
-		dev_info(&pdev->dev, "can't configure DMA slave\n");
+		dev_info(dev, "can't configure DMA slave\n");
 		goto dma_free_area;
 	}
 
-	dev_info(&pdev->dev, "using %s for rx DMA transfers\n",
+	dev_info(dev, "using %s for rx DMA transfers\n",
 		 dma_chan_name(st->dma_st.dma_chan));
 
 	return;
@@ -1500,16 +2071,16 @@ dma_chan_disable:
 	dma_release_channel(st->dma_st.dma_chan);
 	st->dma_st.dma_chan = NULL;
 dma_exit:
-	dev_info(&pdev->dev, "continuing without DMA support\n");
+	dev_info(dev, "continuing without DMA support\n");
 }
 
-static void at91_adc_dma_disable(struct platform_device *pdev)
+static void at91_adc_dma_disable(struct at91_adc_state *st)
 {
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct at91_adc_state *st = iio_priv(indio_dev);
+	struct device *dev = &st->indio_dev->dev;
+	/* we have 2 bytes for each channel */
+	unsigned int sample_size = st->soc_info.platform->nr_channels * 2;
 	unsigned int pages = DIV_ROUND_UP(AT91_HWFIFO_MAX_SIZE *
-					  AT91_BUFFER_MAX_CONVERSION_BYTES * 2,
-					  PAGE_SIZE);
+					  sample_size * 2, PAGE_SIZE);
 
 	/* if we are not using DMA, just return */
 	if (!st->dma_st.dma_chan)
@@ -1523,15 +2094,16 @@ static void at91_adc_dma_disable(struct platform_device *pdev)
 	dma_release_channel(st->dma_st.dma_chan);
 	st->dma_st.dma_chan = NULL;
 
-	dev_info(&pdev->dev, "continuing without DMA support\n");
+	dev_info(dev, "continuing without DMA support\n");
 }
 
 static int at91_adc_set_watermark(struct iio_dev *indio_dev, unsigned int val)
 {
 	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
 
 	if (val > AT91_HWFIFO_MAX_SIZE)
-		return -EINVAL;
+		val = AT91_HWFIFO_MAX_SIZE;
 
 	if (!st->selected_trig->hw_trig) {
 		dev_dbg(&indio_dev->dev, "we need hw trigger for DMA\n");
@@ -1548,11 +2120,19 @@ static int at91_adc_set_watermark(struct iio_dev *indio_dev, unsigned int val)
 	 */
 
 	if (val == 1)
-		at91_adc_dma_disable(to_platform_device(&indio_dev->dev));
+		at91_adc_dma_disable(st);
 	else if (val > 1)
-		at91_adc_dma_init(to_platform_device(&indio_dev->dev));
+		at91_adc_dma_init(st);
 
-	return 0;
+	/*
+	 * We can start the DMA only after setting the watermark and
+	 * having the DMA initialization completed
+	 */
+	ret = at91_adc_buffer_prepare(indio_dev);
+	if (ret)
+		at91_adc_dma_disable(st);
+
+	return ret;
 }
 
 static int at91_adc_update_scan_mode(struct iio_dev *indio_dev,
@@ -1561,39 +2141,44 @@ static int at91_adc_update_scan_mode(struct iio_dev *indio_dev,
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
 	if (bitmap_subset(scan_mask, &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1))
+			  st->soc_info.platform->max_index + 1))
 		return 0;
 	/*
 	 * if the new bitmap is a combination of touchscreen and regular
 	 * channels, then we are not fine
 	 */
 	if (bitmap_intersects(&st->touch_st.channels_bitmask, scan_mask,
-			      AT91_SAMA5D2_MAX_CHAN_IDX + 1))
+			      st->soc_info.platform->max_index + 1))
 		return -EINVAL;
 	return 0;
 }
 
-static void at91_adc_hw_init(struct at91_adc_state *st)
+static void at91_adc_hw_init(struct iio_dev *indio_dev)
 {
-	at91_adc_writel(st, AT91_SAMA5D2_CR, AT91_SAMA5D2_CR_SWRST);
-	at91_adc_writel(st, AT91_SAMA5D2_IDR, 0xffffffff);
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	at91_adc_writel(st, CR, AT91_SAMA5D2_CR_SWRST);
+	if (st->soc_info.platform->layout->EOC_IDR)
+		at91_adc_writel(st, EOC_IDR, 0xffffffff);
+	at91_adc_writel(st, IDR, 0xffffffff);
 	/*
 	 * Transfer field must be set to 2 according to the datasheet and
 	 * allows different analog settings for each channel.
 	 */
-	at91_adc_writel(st, AT91_SAMA5D2_MR,
+	at91_adc_writel(st, MR,
 			AT91_SAMA5D2_MR_TRANSFER(2) | AT91_SAMA5D2_MR_ANACH);
 
-	at91_adc_setup_samp_freq(st, st->soc_info.min_sample_rate);
+	at91_adc_setup_samp_freq(indio_dev, st->soc_info.min_sample_rate,
+				 st->soc_info.startup_time, 0);
 
 	/* configure extended mode register */
-	at91_adc_config_emr(st);
+	at91_adc_config_emr(st, st->oversampling_ratio, 0);
 }
 
 static ssize_t at91_adc_get_fifo_state(struct device *dev,
 				       struct device_attribute *attr, char *buf)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
 	return scnprintf(buf, PAGE_SIZE, "%d\n", !!st->dma_st.dma_chan);
@@ -1602,109 +2187,203 @@ static ssize_t at91_adc_get_fifo_state(struct device *dev,
 static ssize_t at91_adc_get_watermark(struct device *dev,
 				      struct device_attribute *attr, char *buf)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct at91_adc_state *st = iio_priv(indio_dev);
 
 	return scnprintf(buf, PAGE_SIZE, "%d\n", st->dma_st.watermark);
 }
 
+static ssize_t hwfifo_watermark_min_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", "2");
+}
+
+static ssize_t hwfifo_watermark_max_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	return sysfs_emit(buf, "%s\n", AT91_HWFIFO_MAX_SIZE_STR);
+}
+
 static IIO_DEVICE_ATTR(hwfifo_enabled, 0444,
 		       at91_adc_get_fifo_state, NULL, 0);
 static IIO_DEVICE_ATTR(hwfifo_watermark, 0444,
 		       at91_adc_get_watermark, NULL, 0);
-
-static IIO_CONST_ATTR(hwfifo_watermark_min, "2");
-static IIO_CONST_ATTR(hwfifo_watermark_max, AT91_HWFIFO_MAX_SIZE_STR);
-
-static IIO_CONST_ATTR(oversampling_ratio_available,
-		      __stringify(AT91_OSR_1SAMPLES) " "
-		      __stringify(AT91_OSR_4SAMPLES) " "
-		      __stringify(AT91_OSR_16SAMPLES));
-
-static struct attribute *at91_adc_attributes[] = {
-	&iio_const_attr_oversampling_ratio_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group at91_adc_attribute_group = {
-	.attrs = at91_adc_attributes,
-};
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_min, 0);
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_max, 0);
 
 static const struct attribute *at91_adc_fifo_attributes[] = {
-	&iio_const_attr_hwfifo_watermark_min.dev_attr.attr,
-	&iio_const_attr_hwfifo_watermark_max.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_min.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_max.dev_attr.attr,
 	&iio_dev_attr_hwfifo_watermark.dev_attr.attr,
 	&iio_dev_attr_hwfifo_enabled.dev_attr.attr,
 	NULL,
 };
 
 static const struct iio_info at91_adc_info = {
-	.attrs = &at91_adc_attribute_group,
+	.read_avail = &at91_adc_read_avail,
 	.read_raw = &at91_adc_read_raw,
 	.write_raw = &at91_adc_write_raw,
 	.update_scan_mode = &at91_adc_update_scan_mode,
-	.of_xlate = &at91_adc_of_xlate,
+	.fwnode_xlate = &at91_adc_fwnode_xlate,
 	.hwfifo_set_watermark = &at91_adc_set_watermark,
 };
 
+static int at91_adc_buffer_and_trigger_init(struct device *dev,
+					    struct iio_dev *indio)
+{
+	struct at91_adc_state *st = iio_priv(indio);
+	const struct attribute **fifo_attrs;
+	int ret;
+
+	if (st->selected_trig->hw_trig)
+		fifo_attrs = at91_adc_fifo_attributes;
+	else
+		fifo_attrs = NULL;
+
+	ret = devm_iio_triggered_buffer_setup_ext(&indio->dev, indio,
+		&iio_pollfunc_store_time, &at91_adc_trigger_handler,
+		IIO_BUFFER_DIRECTION_IN, &at91_buffer_setup_ops, fifo_attrs);
+	if (ret < 0) {
+		dev_err(dev, "couldn't initialize the buffer.\n");
+		return ret;
+	}
+
+	if (!st->selected_trig->hw_trig)
+		return 0;
+
+	st->trig = at91_adc_allocate_trigger(indio, st->selected_trig->name);
+	if (IS_ERR(st->trig)) {
+		dev_err(dev, "could not allocate trigger\n");
+		return PTR_ERR(st->trig);
+	}
+
+	/*
+	 * Initially the iio buffer has a length of 2 and
+	 * a watermark of 1
+	 */
+	st->dma_st.watermark = 1;
+
+	return 0;
+}
+
+static int at91_adc_temp_sensor_init(struct at91_adc_state *st,
+				     struct device *dev)
+{
+	struct at91_adc_temp_sensor_clb *clb = &st->soc_info.temp_sensor_clb;
+	struct nvmem_cell *temp_calib;
+	u32 *buf;
+	size_t len;
+	int ret = 0;
+
+	if (!st->soc_info.platform->temp_sensor)
+		return 0;
+
+	/* Get the calibration data from NVMEM. */
+	temp_calib = devm_nvmem_cell_get(dev, "temperature_calib");
+	if (IS_ERR(temp_calib)) {
+		ret = PTR_ERR(temp_calib);
+		if (ret != -ENOENT)
+			dev_err(dev, "Failed to get temperature_calib cell!\n");
+		return ret;
+	}
+
+	buf = nvmem_cell_read(temp_calib, &len);
+	if (IS_ERR(buf)) {
+		dev_err(dev, "Failed to read calibration data!\n");
+		return PTR_ERR(buf);
+	}
+	if (len < AT91_ADC_TS_CLB_IDX_MAX * 4) {
+		dev_err(dev, "Invalid calibration data!\n");
+		ret = -EINVAL;
+		goto free_buf;
+	}
+
+	/* Store calibration data for later use. */
+	clb->p1 = buf[AT91_ADC_TS_CLB_IDX_P1];
+	clb->p4 = buf[AT91_ADC_TS_CLB_IDX_P4];
+	clb->p6 = buf[AT91_ADC_TS_CLB_IDX_P6];
+
+	/*
+	 * We prepare here the conversion to milli and also add constant
+	 * factor (5 degrees Celsius) to p1 here to avoid doing it on
+	 * hotpath.
+	 */
+	clb->p1 = clb->p1 * 1000 + 5000;
+
+free_buf:
+	kfree(buf);
+	return ret;
+}
+
 static int at91_adc_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct at91_adc_state *st;
 	struct resource	*res;
-	int ret, i;
+	int ret, i, num_channels;
 	u32 edge_type = IRQ_TYPE_NONE;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
 	if (!indio_dev)
 		return -ENOMEM;
 
-	indio_dev->dev.parent = &pdev->dev;
+	st = iio_priv(indio_dev);
+	st->indio_dev = indio_dev;
+
+	st->soc_info.platform = device_get_match_data(dev);
+
+	ret = at91_adc_temp_sensor_init(st, &pdev->dev);
+	/* Don't register temperature channel if initialization failed. */
+	if (ret)
+		num_channels = st->soc_info.platform->max_channels - 1;
+	else
+		num_channels = st->soc_info.platform->max_channels;
+
 	indio_dev->name = dev_name(&pdev->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
 	indio_dev->info = &at91_adc_info;
-	indio_dev->channels = at91_adc_channels;
-	indio_dev->num_channels = ARRAY_SIZE(at91_adc_channels);
-
-	st = iio_priv(indio_dev);
+	indio_dev->channels = *st->soc_info.platform->adc_channels;
+	indio_dev->num_channels = num_channels;
 
 	bitmap_set(&st->touch_st.channels_bitmask,
-		   AT91_SAMA5D2_TOUCH_X_CHAN_IDX, 1);
+		   st->soc_info.platform->touch_chan_x, 1);
 	bitmap_set(&st->touch_st.channels_bitmask,
-		   AT91_SAMA5D2_TOUCH_Y_CHAN_IDX, 1);
+		   st->soc_info.platform->touch_chan_y, 1);
 	bitmap_set(&st->touch_st.channels_bitmask,
-		   AT91_SAMA5D2_TOUCH_P_CHAN_IDX, 1);
+		   st->soc_info.platform->touch_chan_p, 1);
 
-	st->oversampling_ratio = AT91_OSR_1SAMPLES;
+	st->oversampling_ratio = 1;
 
-	ret = of_property_read_u32(pdev->dev.of_node,
-				   "atmel,min-sample-rate-hz",
-				   &st->soc_info.min_sample_rate);
+	ret = device_property_read_u32(dev, "atmel,min-sample-rate-hz",
+				       &st->soc_info.min_sample_rate);
 	if (ret) {
 		dev_err(&pdev->dev,
 			"invalid or missing value for atmel,min-sample-rate-hz\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node,
-				   "atmel,max-sample-rate-hz",
-				   &st->soc_info.max_sample_rate);
+	ret = device_property_read_u32(dev, "atmel,max-sample-rate-hz",
+				       &st->soc_info.max_sample_rate);
 	if (ret) {
 		dev_err(&pdev->dev,
 			"invalid or missing value for atmel,max-sample-rate-hz\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node, "atmel,startup-time-ms",
-				   &st->soc_info.startup_time);
+	ret = device_property_read_u32(dev, "atmel,startup-time-ms",
+				       &st->soc_info.startup_time);
 	if (ret) {
 		dev_err(&pdev->dev,
 			"invalid or missing value for atmel,startup-time-ms\n");
 		return ret;
 	}
 
-	ret = of_property_read_u32(pdev->dev.of_node,
-				   "atmel,trigger-edge-type", &edge_type);
+	ret = device_property_read_u32(dev, "atmel,trigger-edge-type",
+				       &edge_type);
 	if (ret) {
 		dev_dbg(&pdev->dev,
 			"atmel,trigger-edge-type not specified, only software trigger available\n");
@@ -1713,7 +2392,7 @@ static int at91_adc_probe(struct platform_device *pdev)
 	st->selected_trig = NULL;
 
 	/* find the right trigger, or no trigger at all */
-	for (i = 0; i < AT91_SAMA5D2_HW_TRIG_CNT + 1; i++)
+	for (i = 0; i < st->soc_info.platform->hw_trig_cnt + 1; i++)
 		if (at91_adc_trigger_list[i].edge_type == edge_type) {
 			st->selected_trig = &at91_adc_trigger_list[i];
 			break;
@@ -1728,17 +2407,13 @@ static int at91_adc_probe(struct platform_device *pdev)
 	mutex_init(&st->lock);
 	INIT_WORK(&st->touch_st.workq, at91_adc_workq_handler);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res)
-		return -EINVAL;
+	st->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+	if (IS_ERR(st->base))
+		return PTR_ERR(st->base);
 
 	/* if we plan to use DMA, we need the physical address of the regs */
 	st->dma_st.phys_addr = res->start;
 
-	st->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(st->base))
-		return PTR_ERR(st->base);
-
 	st->irq = platform_get_irq(pdev, 0);
 	if (st->irq <= 0) {
 		if (!st->irq)
@@ -1778,35 +2453,23 @@ static int at91_adc_probe(struct platform_device *pdev)
 		goto vref_disable;
 	}
 
-	at91_adc_hw_init(st);
-
 	ret = clk_prepare_enable(st->per_clk);
 	if (ret)
 		goto vref_disable;
 
 	platform_set_drvdata(pdev, indio_dev);
+	st->dev = &pdev->dev;
+	pm_runtime_set_autosuspend_delay(st->dev, 500);
+	pm_runtime_use_autosuspend(st->dev);
+	pm_runtime_set_active(st->dev);
+	pm_runtime_enable(st->dev);
+	pm_runtime_get_noresume(st->dev);
 
-	ret = at91_adc_buffer_init(indio_dev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "couldn't initialize the buffer.\n");
-		goto per_clk_disable_unprepare;
-	}
-
-	if (st->selected_trig->hw_trig) {
-		ret = at91_adc_trigger_init(indio_dev);
-		if (ret < 0) {
-			dev_err(&pdev->dev, "couldn't setup the triggers.\n");
-			goto per_clk_disable_unprepare;
-		}
-		/*
-		 * Initially the iio buffer has a length of 2 and
-		 * a watermark of 1
-		 */
-		st->dma_st.watermark = 1;
+	at91_adc_hw_init(indio_dev);
 
-		iio_buffer_set_attrs(indio_dev->buffer,
-				     at91_adc_fifo_attributes);
-	}
+	ret = at91_adc_buffer_and_trigger_init(&pdev->dev, indio_dev);
+	if (ret < 0)
+		goto err_pm_disable;
 
 	if (dma_coerce_mask_and_coherent(&indio_dev->dev, DMA_BIT_MASK(32)))
 		dev_info(&pdev->dev, "cannot set DMA mask to 32-bit\n");
@@ -1820,13 +2483,20 @@ static int at91_adc_probe(struct platform_device *pdev)
 			 st->selected_trig->name);
 
 	dev_info(&pdev->dev, "version: %x\n",
-		 readl_relaxed(st->base + AT91_SAMA5D2_VERSION));
+		 readl_relaxed(st->base + st->soc_info.platform->layout->VERSION));
+
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
 
 	return 0;
 
 dma_disable:
-	at91_adc_dma_disable(pdev);
-per_clk_disable_unprepare:
+	at91_adc_dma_disable(st);
+err_pm_disable:
+	pm_runtime_put_noidle(st->dev);
+	pm_runtime_disable(st->dev);
+	pm_runtime_set_suspended(st->dev);
+	pm_runtime_dont_use_autosuspend(st->dev);
 	clk_disable_unprepare(st->per_clk);
 vref_disable:
 	regulator_disable(st->vref);
@@ -1842,8 +2512,10 @@ static int at91_adc_remove(struct platform_device *pdev)
 
 	iio_device_unregister(indio_dev);
 
-	at91_adc_dma_disable(pdev);
+	at91_adc_dma_disable(st);
 
+	pm_runtime_disable(st->dev);
+	pm_runtime_set_suspended(st->dev);
 	clk_disable_unprepare(st->per_clk);
 
 	regulator_disable(st->vref);
@@ -1852,10 +2524,18 @@ static int at91_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static __maybe_unused int at91_adc_suspend(struct device *dev)
+static int at91_adc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct at91_adc_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = pm_runtime_resume_and_get(st->dev);
+	if (ret < 0)
+		return ret;
+
+	if (iio_buffer_enabled(indio_dev))
+		at91_adc_buffer_postdisable(indio_dev);
 
 	/*
 	 * Do a sofware reset of the ADC before we go to suspend.
@@ -1863,8 +2543,10 @@ static __maybe_unused int at91_adc_suspend(struct device *dev)
 	 * and can be used by for other devices.
 	 * Otherwise, ADC will hog them and we can't go to suspend mode.
 	 */
-	at91_adc_writel(st, AT91_SAMA5D2_CR, AT91_SAMA5D2_CR_SWRST);
+	at91_adc_writel(st, CR, AT91_SAMA5D2_CR_SWRST);
 
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_noidle(st->dev);
 	clk_disable_unprepare(st->per_clk);
 	regulator_disable(st->vref);
 	regulator_disable(st->reg);
@@ -1872,7 +2554,7 @@ static __maybe_unused int at91_adc_suspend(struct device *dev)
 	return pinctrl_pm_select_sleep_state(dev);
 }
 
-static __maybe_unused int at91_adc_resume(struct device *dev)
+static int at91_adc_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct at91_adc_state *st = iio_priv(indio_dev);
@@ -1894,25 +2576,28 @@ static __maybe_unused int at91_adc_resume(struct device *dev)
 	if (ret)
 		goto vref_disable_resume;
 
-	at91_adc_hw_init(st);
+	pm_runtime_get_noresume(st->dev);
+
+	at91_adc_hw_init(indio_dev);
 
 	/* reconfiguring trigger hardware state */
-	if (!iio_buffer_enabled(indio_dev))
-		return 0;
+	if (iio_buffer_enabled(indio_dev)) {
+		ret = at91_adc_buffer_prepare(indio_dev);
+		if (ret)
+			goto pm_runtime_put;
 
-	/* check if we are enabling triggered buffer or the touchscreen */
-	if (bitmap_subset(indio_dev->active_scan_mask,
-			  &st->touch_st.channels_bitmask,
-			  AT91_SAMA5D2_MAX_CHAN_IDX + 1)) {
-		/* touchscreen enabling */
-		return at91_adc_configure_touch(st, true);
-	} else {
-		return at91_adc_configure_trigger(st->trig, true);
+		at91_adc_configure_trigger_registers(st, true);
 	}
 
-	/* not needed but more explicit */
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_autosuspend(st->dev);
+
 	return 0;
 
+pm_runtime_put:
+	pm_runtime_mark_last_busy(st->dev);
+	pm_runtime_put_noidle(st->dev);
+	clk_disable_unprepare(st->per_clk);
 vref_disable_resume:
 	regulator_disable(st->vref);
 reg_disable_resume:
@@ -1922,11 +2607,37 @@ resume_failed:
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(at91_adc_pm_ops, at91_adc_suspend, at91_adc_resume);
+static int at91_adc_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	clk_disable(st->per_clk);
+
+	return 0;
+}
+
+static int at91_adc_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct at91_adc_state *st = iio_priv(indio_dev);
+
+	return clk_enable(st->per_clk);
+}
+
+static const struct dev_pm_ops at91_adc_pm_ops = {
+	SYSTEM_SLEEP_PM_OPS(at91_adc_suspend, at91_adc_resume)
+	RUNTIME_PM_OPS(at91_adc_runtime_suspend, at91_adc_runtime_resume,
+		       NULL)
+};
 
 static const struct of_device_id at91_adc_dt_match[] = {
 	{
 		.compatible = "atmel,sama5d2-adc",
+		.data = (const void *)&sama5d2_platform,
+	}, {
+		.compatible = "microchip,sama7g5-adc",
+		.data = (const void *)&sama7g5_platform,
 	}, {
 		/* sentinel */
 	}
@@ -1939,11 +2650,12 @@ static struct platform_driver at91_adc_driver = {
 	.driver = {
 		.name = "at91-sama5d2_adc",
 		.of_match_table = at91_adc_dt_match,
-		.pm = &at91_adc_pm_ops,
+		.pm = pm_ptr(&at91_adc_pm_ops),
 	},
 };
 module_platform_driver(at91_adc_driver)
 
-MODULE_AUTHOR("Ludovic Desroches <ludovic.desroches@atmel.com>");
+MODULE_AUTHOR("Ludovic Desroches <ludovic.desroches@microchip.com>");
+MODULE_AUTHOR("Eugen Hristev <eugen.hristev@microchip.com");
 MODULE_DESCRIPTION("Atmel AT91 SAMA5D2 ADC");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/at91_adc.c b/drivers/iio/adc/at91_adc.c
index abe99856c823..532daaa6f943 100644
--- a/drivers/iio/adc/at91_adc.c
+++ b/drivers/iio/adc/at91_adc.c
@@ -22,8 +22,6 @@
 #include <linux/slab.h>
 #include <linux/wait.h>
 
-#include <linux/platform_data/at91_adc.h>
-
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/trigger.h>
@@ -153,11 +151,30 @@
 #define TOUCH_SHTIM                    0xa
 #define TOUCH_SCTIM_US		10		/* 10us for the Touchscreen Switches Closure Time */
 
+enum atmel_adc_ts_type {
+	ATMEL_ADC_TOUCHSCREEN_NONE = 0,
+	ATMEL_ADC_TOUCHSCREEN_4WIRE = 4,
+	ATMEL_ADC_TOUCHSCREEN_5WIRE = 5,
+};
+
+/**
+ * struct at91_adc_trigger - description of triggers
+ * @name:		name of the trigger advertised to the user
+ * @value:		value to set in the ADC's trigger setup register
+ *			to enable the trigger
+ * @is_external:	Does the trigger rely on an external pin?
+ */
+struct at91_adc_trigger {
+	const char	*name;
+	u8		value;
+	bool		is_external;
+};
+
 /**
  * struct at91_adc_reg_desc - Various informations relative to registers
  * @channel_base:	Base offset for the channel data registers
  * @drdy_mask:		Mask of the DRDY field in the relevant registers
-			(Interruptions registers mostly)
+ *			(Interruptions registers mostly)
  * @status_register:	Offset of the Interrupt Status Register
  * @trigger_register:	Offset of the Trigger setup register
  * @mr_prescal_mask:	Mask of the PRESCAL field in the adc MR register
@@ -187,6 +204,11 @@ struct at91_adc_caps {
 	u32 (*calc_startup_ticks)(u32 startup_time, u32 adc_clk_khz);
 
 	u8	num_channels;
+
+	u8	low_res_bits;
+	u8	high_res_bits;
+	u32	trigger_number;
+	const struct at91_adc_trigger *triggers;
 	struct at91_adc_reg_desc registers;
 };
 
@@ -202,19 +224,16 @@ struct at91_adc_state {
 	struct mutex		lock;
 	u8			num_channels;
 	void __iomem		*reg_base;
-	struct at91_adc_reg_desc *registers;
+	const struct at91_adc_reg_desc *registers;
 	u32			startup_time;
 	u8			sample_hold_time;
 	bool			sleep_mode;
 	struct iio_trigger	**trig;
-	struct at91_adc_trigger	*trigger_list;
-	u32			trigger_number;
 	bool			use_external;
 	u32			vref_mv;
 	u32			res;		/* resolution used for convertions */
-	bool			low_res;	/* the resolution corresponds to the lowest one */
 	wait_queue_head_t	wq_data_avail;
-	struct at91_adc_caps	*caps;
+	const struct at91_adc_caps	*caps;
 
 	/*
 	 * Following ADC channels are shared by touchscreen:
@@ -287,13 +306,13 @@ static void handle_adc_eoc_trigger(int irq, struct iio_dev *idev)
 	}
 }
 
-static int at91_ts_sample(struct at91_adc_state *st)
+static int at91_ts_sample(struct iio_dev *idev)
 {
+	struct at91_adc_state *st = iio_priv(idev);
 	unsigned int xscale, yscale, reg, z1, z2;
 	unsigned int x, y, pres, xpos, ypos;
 	unsigned int rxp = 1;
 	unsigned int factor = 1000;
-	struct iio_dev *idev = iio_priv_to_dev(st);
 
 	unsigned int xyz_mask_bits = st->res;
 	unsigned int xyz_mask = (1 << xyz_mask_bits) - 1;
@@ -449,7 +468,7 @@ static irqreturn_t at91_adc_9x5_interrupt(int irq, void *private)
 
 		if (status & AT91_ADC_ISR_PENS) {
 			/* validate data by pen contact */
-			at91_ts_sample(st);
+			at91_ts_sample(idev);
 		} else {
 			/* triggered by event that is no pen contact, just read
 			 * them to clean the interrupt and discard all.
@@ -518,17 +537,17 @@ static int at91_adc_channel_init(struct iio_dev *idev)
 }
 
 static int at91_adc_get_trigger_value_by_name(struct iio_dev *idev,
-					     struct at91_adc_trigger *triggers,
+					     const struct at91_adc_trigger *triggers,
 					     const char *trigger_name)
 {
 	struct at91_adc_state *st = iio_priv(idev);
 	int i;
 
-	for (i = 0; i < st->trigger_number; i++) {
+	for (i = 0; i < st->caps->trigger_number; i++) {
 		char *name = kasprintf(GFP_KERNEL,
 				"%s-dev%d-%s",
 				idev->name,
-				idev->id,
+				iio_device_id(idev),
 				triggers[i].name);
 		if (!name)
 			return -ENOMEM;
@@ -550,13 +569,13 @@ static int at91_adc_configure_trigger(struct iio_trigger *trig, bool state)
 {
 	struct iio_dev *idev = iio_trigger_get_drvdata(trig);
 	struct at91_adc_state *st = iio_priv(idev);
-	struct at91_adc_reg_desc *reg = st->registers;
+	const struct at91_adc_reg_desc *reg = st->registers;
 	u32 status = at91_adc_readl(st, reg->trigger_register);
 	int value;
 	u8 bit;
 
 	value = at91_adc_get_trigger_value_by_name(idev,
-						   st->trigger_list,
+						   st->caps->triggers,
 						   idev->trig->name);
 	if (value < 0)
 		return value;
@@ -601,17 +620,16 @@ static const struct iio_trigger_ops at91_adc_trigger_ops = {
 };
 
 static struct iio_trigger *at91_adc_allocate_trigger(struct iio_dev *idev,
-						     struct at91_adc_trigger *trigger)
+						     const struct at91_adc_trigger *trigger)
 {
 	struct iio_trigger *trig;
 	int ret;
 
-	trig = iio_trigger_alloc("%s-dev%d-%s", idev->name,
-				 idev->id, trigger->name);
+	trig = iio_trigger_alloc(idev->dev.parent, "%s-dev%d-%s", idev->name,
+				 iio_device_id(idev), trigger->name);
 	if (trig == NULL)
 		return NULL;
 
-	trig->dev.parent = idev->dev.parent;
 	iio_trigger_set_drvdata(trig, idev);
 	trig->ops = &at91_adc_trigger_ops;
 
@@ -628,7 +646,7 @@ static int at91_adc_trigger_init(struct iio_dev *idev)
 	int i, ret;
 
 	st->trig = devm_kcalloc(&idev->dev,
-				st->trigger_number, sizeof(*st->trig),
+				st->caps->trigger_number, sizeof(*st->trig),
 				GFP_KERNEL);
 
 	if (st->trig == NULL) {
@@ -636,12 +654,12 @@ static int at91_adc_trigger_init(struct iio_dev *idev)
 		goto error_ret;
 	}
 
-	for (i = 0; i < st->trigger_number; i++) {
-		if (st->trigger_list[i].is_external && !(st->use_external))
+	for (i = 0; i < st->caps->trigger_number; i++) {
+		if (st->caps->triggers[i].is_external && !(st->use_external))
 			continue;
 
 		st->trig[i] = at91_adc_allocate_trigger(idev,
-							st->trigger_list + i);
+							st->caps->triggers + i);
 		if (st->trig[i] == NULL) {
 			dev_err(&idev->dev,
 				"Could not allocate trigger %d\n", i);
@@ -666,7 +684,7 @@ static void at91_adc_trigger_remove(struct iio_dev *idev)
 	struct at91_adc_state *st = iio_priv(idev);
 	int i;
 
-	for (i = 0; i < st->trigger_number; i++) {
+	for (i = 0; i < st->caps->trigger_number; i++) {
 		iio_trigger_unregister(st->trig[i]);
 		iio_trigger_free(st->trig[i]);
 	}
@@ -737,58 +755,6 @@ static int at91_adc_read_raw(struct iio_dev *idev,
 	return -EINVAL;
 }
 
-static int at91_adc_of_get_resolution(struct at91_adc_state *st,
-				      struct platform_device *pdev)
-{
-	struct iio_dev *idev = iio_priv_to_dev(st);
-	struct device_node *np = pdev->dev.of_node;
-	int count, i, ret = 0;
-	char *res_name, *s;
-	u32 *resolutions;
-
-	count = of_property_count_strings(np, "atmel,adc-res-names");
-	if (count < 2) {
-		dev_err(&idev->dev, "You must specified at least two resolution names for "
-				    "adc-res-names property in the DT\n");
-		return count;
-	}
-
-	resolutions = kmalloc_array(count, sizeof(*resolutions), GFP_KERNEL);
-	if (!resolutions)
-		return -ENOMEM;
-
-	if (of_property_read_u32_array(np, "atmel,adc-res", resolutions, count)) {
-		dev_err(&idev->dev, "Missing adc-res property in the DT.\n");
-		ret = -ENODEV;
-		goto ret;
-	}
-
-	if (of_property_read_string(np, "atmel,adc-use-res", (const char **)&res_name))
-		res_name = "highres";
-
-	for (i = 0; i < count; i++) {
-		if (of_property_read_string_index(np, "atmel,adc-res-names", i, (const char **)&s))
-			continue;
-
-		if (strcmp(res_name, s))
-			continue;
-
-		st->res = resolutions[i];
-		if (!strcmp(res_name, "lowres"))
-			st->low_res = true;
-		else
-			st->low_res = false;
-
-		dev_info(&idev->dev, "Resolution used: %u bits\n", st->res);
-		goto ret;
-	}
-
-	dev_err(&idev->dev, "There is no resolution for %s\n", res_name);
-
-ret:
-	kfree(resolutions);
-	return ret;
-}
 
 static u32 calc_startup_ticks_9260(u32 startup_time, u32 adc_clk_khz)
 {
@@ -829,8 +795,6 @@ static u32 calc_startup_ticks_9x5(u32 startup_time, u32 adc_clk_khz)
 	return ticks;
 }
 
-static const struct of_device_id at91_adc_dt_ids[];
-
 static int at91_adc_probe_dt_ts(struct device_node *node,
 	struct at91_adc_state *st, struct device *dev)
 {
@@ -866,124 +830,6 @@ static int at91_adc_probe_dt_ts(struct device_node *node,
 	}
 }
 
-static int at91_adc_probe_dt(struct at91_adc_state *st,
-			     struct platform_device *pdev)
-{
-	struct iio_dev *idev = iio_priv_to_dev(st);
-	struct device_node *node = pdev->dev.of_node;
-	struct device_node *trig_node;
-	int i = 0, ret;
-	u32 prop;
-
-	if (!node)
-		return -EINVAL;
-
-	st->caps = (struct at91_adc_caps *)
-		of_match_device(at91_adc_dt_ids, &pdev->dev)->data;
-
-	st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers");
-
-	if (of_property_read_u32(node, "atmel,adc-channels-used", &prop)) {
-		dev_err(&idev->dev, "Missing adc-channels-used property in the DT.\n");
-		ret = -EINVAL;
-		goto error_ret;
-	}
-	st->channels_mask = prop;
-
-	st->sleep_mode = of_property_read_bool(node, "atmel,adc-sleep-mode");
-
-	if (of_property_read_u32(node, "atmel,adc-startup-time", &prop)) {
-		dev_err(&idev->dev, "Missing adc-startup-time property in the DT.\n");
-		ret = -EINVAL;
-		goto error_ret;
-	}
-	st->startup_time = prop;
-
-	prop = 0;
-	of_property_read_u32(node, "atmel,adc-sample-hold-time", &prop);
-	st->sample_hold_time = prop;
-
-	if (of_property_read_u32(node, "atmel,adc-vref", &prop)) {
-		dev_err(&idev->dev, "Missing adc-vref property in the DT.\n");
-		ret = -EINVAL;
-		goto error_ret;
-	}
-	st->vref_mv = prop;
-
-	ret = at91_adc_of_get_resolution(st, pdev);
-	if (ret)
-		goto error_ret;
-
-	st->registers = &st->caps->registers;
-	st->num_channels = st->caps->num_channels;
-	st->trigger_number = of_get_child_count(node);
-	st->trigger_list = devm_kcalloc(&idev->dev,
-					st->trigger_number,
-					sizeof(struct at91_adc_trigger),
-					GFP_KERNEL);
-	if (!st->trigger_list) {
-		dev_err(&idev->dev, "Could not allocate trigger list memory.\n");
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-
-	for_each_child_of_node(node, trig_node) {
-		struct at91_adc_trigger *trig = st->trigger_list + i;
-		const char *name;
-
-		if (of_property_read_string(trig_node, "trigger-name", &name)) {
-			dev_err(&idev->dev, "Missing trigger-name property in the DT.\n");
-			ret = -EINVAL;
-			goto error_ret;
-		}
-		trig->name = name;
-
-		if (of_property_read_u32(trig_node, "trigger-value", &prop)) {
-			dev_err(&idev->dev, "Missing trigger-value property in the DT.\n");
-			ret = -EINVAL;
-			goto error_ret;
-		}
-		trig->value = prop;
-		trig->is_external = of_property_read_bool(trig_node, "trigger-external");
-		i++;
-	}
-
-	/* Check if touchscreen is supported. */
-	if (st->caps->has_ts)
-		return at91_adc_probe_dt_ts(node, st, &idev->dev);
-	else
-		dev_info(&idev->dev, "not support touchscreen in the adc compatible string.\n");
-
-	return 0;
-
-error_ret:
-	return ret;
-}
-
-static int at91_adc_probe_pdata(struct at91_adc_state *st,
-				struct platform_device *pdev)
-{
-	struct at91_adc_data *pdata = pdev->dev.platform_data;
-
-	if (!pdata)
-		return -EINVAL;
-
-	st->caps = (struct at91_adc_caps *)
-			platform_get_device_id(pdev)->driver_data;
-
-	st->use_external = pdata->use_external_triggers;
-	st->vref_mv = pdata->vref;
-	st->channels_mask = pdata->channels_used;
-	st->num_channels = st->caps->num_channels;
-	st->startup_time = pdata->startup_time;
-	st->trigger_number = pdata->trigger_number;
-	st->trigger_list = pdata->trigger_list;
-	st->registers = &st->caps->registers;
-	st->touchscreen_type = pdata->touchscreen_type;
-
-	return 0;
-}
-
 static const struct iio_info at91_adc_info = {
 	.read_raw = &at91_adc_read_raw,
 };
@@ -1010,9 +856,9 @@ static void atmel_ts_close(struct input_dev *dev)
 		at91_adc_writel(st, AT91_ADC_IDR, AT91RL_ADC_IER_PEN);
 }
 
-static int at91_ts_hw_init(struct at91_adc_state *st, u32 adc_clk_khz)
+static int at91_ts_hw_init(struct iio_dev *idev, u32 adc_clk_khz)
 {
-	struct iio_dev *idev = iio_priv_to_dev(st);
+	struct at91_adc_state *st = iio_priv(idev);
 	u32 reg = 0;
 	u32 tssctim = 0;
 	int i = 0;
@@ -1085,11 +931,11 @@ static int at91_ts_hw_init(struct at91_adc_state *st, u32 adc_clk_khz)
 	return 0;
 }
 
-static int at91_ts_register(struct at91_adc_state *st,
+static int at91_ts_register(struct iio_dev *idev,
 		struct platform_device *pdev)
 {
+	struct at91_adc_state *st = iio_priv(idev);
 	struct input_dev *input;
-	struct iio_dev *idev = iio_priv_to_dev(st);
 	int ret;
 
 	input = input_allocate_device();
@@ -1149,11 +995,12 @@ static void at91_ts_unregister(struct at91_adc_state *st)
 static int at91_adc_probe(struct platform_device *pdev)
 {
 	unsigned int prsc, mstrclk, ticks, adc_clk, adc_clk_khz, shtim;
+	struct device_node *node = pdev->dev.of_node;
 	int ret;
 	struct iio_dev *idev;
 	struct at91_adc_state *st;
-	struct resource *res;
-	u32 reg;
+	u32 reg, prop;
+	char *s;
 
 	idev = devm_iio_device_alloc(&pdev->dev, sizeof(struct at91_adc_state));
 	if (!idev)
@@ -1161,19 +1008,54 @@ static int at91_adc_probe(struct platform_device *pdev)
 
 	st = iio_priv(idev);
 
-	if (pdev->dev.of_node)
-		ret = at91_adc_probe_dt(st, pdev);
-	else
-		ret = at91_adc_probe_pdata(st, pdev);
+	st->caps = of_device_get_match_data(&pdev->dev);
 
-	if (ret) {
-		dev_err(&pdev->dev, "No platform data available.\n");
+	st->use_external = of_property_read_bool(node, "atmel,adc-use-external-triggers");
+
+	if (of_property_read_u32(node, "atmel,adc-channels-used", &prop)) {
+		dev_err(&idev->dev, "Missing adc-channels-used property in the DT.\n");
+		return -EINVAL;
+	}
+	st->channels_mask = prop;
+
+	st->sleep_mode = of_property_read_bool(node, "atmel,adc-sleep-mode");
+
+	if (of_property_read_u32(node, "atmel,adc-startup-time", &prop)) {
+		dev_err(&idev->dev, "Missing adc-startup-time property in the DT.\n");
 		return -EINVAL;
 	}
+	st->startup_time = prop;
+
+	prop = 0;
+	of_property_read_u32(node, "atmel,adc-sample-hold-time", &prop);
+	st->sample_hold_time = prop;
+
+	if (of_property_read_u32(node, "atmel,adc-vref", &prop)) {
+		dev_err(&idev->dev, "Missing adc-vref property in the DT.\n");
+		return -EINVAL;
+	}
+	st->vref_mv = prop;
+
+	st->res = st->caps->high_res_bits;
+	if (st->caps->low_res_bits &&
+	    !of_property_read_string(node, "atmel,adc-use-res", (const char **)&s)
+	    && !strcmp(s, "lowres"))
+		st->res = st->caps->low_res_bits;
+
+	dev_info(&idev->dev, "Resolution used: %u bits\n", st->res);
+
+	st->registers = &st->caps->registers;
+	st->num_channels = st->caps->num_channels;
+
+	/* Check if touchscreen is supported. */
+	if (st->caps->has_ts) {
+		ret = at91_adc_probe_dt_ts(node, st, &idev->dev);
+		if (ret)
+			return ret;
+	}
 
 	platform_set_drvdata(pdev, idev);
 
-	idev->dev.parent = &pdev->dev;
 	idev->name = dev_name(&pdev->dev);
 	idev->modes = INDIO_DIRECT_MODE;
 	idev->info = &at91_adc_info;
@@ -1182,9 +1064,7 @@ static int at91_adc_probe(struct platform_device *pdev)
 	if (st->irq < 0)
 		return -ENODEV;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-
-	st->reg_base = devm_ioremap_resource(&pdev->dev, res);
+	st->reg_base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(st->reg_base))
 		return PTR_ERR(st->reg_base);
 
@@ -1268,7 +1148,7 @@ static int at91_adc_probe(struct platform_device *pdev)
 
 	reg = AT91_ADC_PRESCAL_(prsc) & st->registers->mr_prescal_mask;
 	reg |= AT91_ADC_STARTUP_(ticks) & st->registers->mr_startup_mask;
-	if (st->low_res)
+	if (st->res == st->caps->low_res_bits)
 		reg |= AT91_ADC_LOWRES;
 	if (st->sleep_mode)
 		reg |= AT91_ADC_SLEEP;
@@ -1304,11 +1184,11 @@ static int at91_adc_probe(struct platform_device *pdev)
 			goto error_disable_adc_clk;
 		}
 	} else {
-		ret = at91_ts_register(st, pdev);
+		ret = at91_ts_register(idev, pdev);
 		if (ret)
 			goto error_disable_adc_clk;
 
-		at91_ts_hw_init(st, adc_clk_khz);
+		at91_ts_hw_init(idev, adc_clk_khz);
 	}
 
 	ret = iio_device_register(idev);
@@ -1354,7 +1234,6 @@ static int at91_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int at91_adc_suspend(struct device *dev)
 {
 	struct iio_dev *idev = dev_get_drvdata(dev);
@@ -1376,13 +1255,22 @@ static int at91_adc_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(at91_adc_pm_ops, at91_adc_suspend, at91_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(at91_adc_pm_ops, at91_adc_suspend,
+				at91_adc_resume);
+
+static const struct at91_adc_trigger at91sam9260_triggers[] = {
+	{ .name = "timer-counter-0", .value = 0x1 },
+	{ .name = "timer-counter-1", .value = 0x3 },
+	{ .name = "timer-counter-2", .value = 0x5 },
+	{ .name = "external", .value = 0xd, .is_external = true },
+};
 
 static struct at91_adc_caps at91sam9260_caps = {
 	.calc_startup_ticks = calc_startup_ticks_9260,
 	.num_channels = 4,
+	.low_res_bits = 8,
+	.high_res_bits = 10,
 	.registers = {
 		.channel_base = AT91_ADC_CHR(0),
 		.drdy_mask = AT91_ADC_DRDY,
@@ -1391,12 +1279,23 @@ static struct at91_adc_caps at91sam9260_caps = {
 		.mr_prescal_mask = AT91_ADC_PRESCAL_9260,
 		.mr_startup_mask = AT91_ADC_STARTUP_9260,
 	},
+	.triggers = at91sam9260_triggers,
+	.trigger_number = ARRAY_SIZE(at91sam9260_triggers),
+};
+
+static const struct at91_adc_trigger at91sam9x5_triggers[] = {
+	{ .name = "external-rising", .value = 0x1, .is_external = true },
+	{ .name = "external-falling", .value = 0x2, .is_external = true },
+	{ .name = "external-any", .value = 0x3, .is_external = true },
+	{ .name = "continuous", .value = 0x6 },
 };
 
 static struct at91_adc_caps at91sam9rl_caps = {
 	.has_ts = true,
 	.calc_startup_ticks = calc_startup_ticks_9260,	/* same as 9260 */
 	.num_channels = 6,
+	.low_res_bits = 8,
+	.high_res_bits = 10,
 	.registers = {
 		.channel_base = AT91_ADC_CHR(0),
 		.drdy_mask = AT91_ADC_DRDY,
@@ -1405,12 +1304,16 @@ static struct at91_adc_caps at91sam9rl_caps = {
 		.mr_prescal_mask = AT91_ADC_PRESCAL_9260,
 		.mr_startup_mask = AT91_ADC_STARTUP_9G45,
 	},
+	.triggers = at91sam9x5_triggers,
+	.trigger_number = ARRAY_SIZE(at91sam9x5_triggers),
 };
 
 static struct at91_adc_caps at91sam9g45_caps = {
 	.has_ts = true,
 	.calc_startup_ticks = calc_startup_ticks_9260,	/* same as 9260 */
 	.num_channels = 8,
+	.low_res_bits = 8,
+	.high_res_bits = 10,
 	.registers = {
 		.channel_base = AT91_ADC_CHR(0),
 		.drdy_mask = AT91_ADC_DRDY,
@@ -1419,6 +1322,8 @@ static struct at91_adc_caps at91sam9g45_caps = {
 		.mr_prescal_mask = AT91_ADC_PRESCAL_9G45,
 		.mr_startup_mask = AT91_ADC_STARTUP_9G45,
 	},
+	.triggers = at91sam9x5_triggers,
+	.trigger_number = ARRAY_SIZE(at91sam9x5_triggers),
 };
 
 static struct at91_adc_caps at91sam9x5_caps = {
@@ -1428,6 +1333,8 @@ static struct at91_adc_caps at91sam9x5_caps = {
 	.ts_pen_detect_sensitivity = 2,
 	.calc_startup_ticks = calc_startup_ticks_9x5,
 	.num_channels = 12,
+	.low_res_bits = 8,
+	.high_res_bits = 10,
 	.registers = {
 		.channel_base = AT91_ADC_CDR0_9X5,
 		.drdy_mask = AT91_ADC_SR_DRDY_9X5,
@@ -1437,6 +1344,29 @@ static struct at91_adc_caps at91sam9x5_caps = {
 		.mr_prescal_mask = AT91_ADC_PRESCAL_9G45,
 		.mr_startup_mask = AT91_ADC_STARTUP_9X5,
 	},
+	.triggers = at91sam9x5_triggers,
+	.trigger_number = ARRAY_SIZE(at91sam9x5_triggers),
+};
+
+static struct at91_adc_caps sama5d3_caps = {
+	.has_ts = true,
+	.has_tsmr = true,
+	.ts_filter_average = 3,
+	.ts_pen_detect_sensitivity = 2,
+	.calc_startup_ticks = calc_startup_ticks_9x5,
+	.num_channels = 12,
+	.low_res_bits = 0,
+	.high_res_bits = 12,
+	.registers = {
+		.channel_base = AT91_ADC_CDR0_9X5,
+		.drdy_mask = AT91_ADC_SR_DRDY_9X5,
+		.status_register = AT91_ADC_SR_9X5,
+		.trigger_register = AT91_ADC_TRGR_9X5,
+		.mr_prescal_mask = AT91_ADC_PRESCAL_9G45,
+		.mr_startup_mask = AT91_ADC_STARTUP_9X5,
+	},
+	.triggers = at91sam9x5_triggers,
+	.trigger_number = ARRAY_SIZE(at91sam9x5_triggers),
 };
 
 static const struct of_device_id at91_adc_dt_ids[] = {
@@ -1444,37 +1374,18 @@ static const struct of_device_id at91_adc_dt_ids[] = {
 	{ .compatible = "atmel,at91sam9rl-adc", .data = &at91sam9rl_caps },
 	{ .compatible = "atmel,at91sam9g45-adc", .data = &at91sam9g45_caps },
 	{ .compatible = "atmel,at91sam9x5-adc", .data = &at91sam9x5_caps },
+	{ .compatible = "atmel,sama5d3-adc", .data = &sama5d3_caps },
 	{},
 };
 MODULE_DEVICE_TABLE(of, at91_adc_dt_ids);
 
-static const struct platform_device_id at91_adc_ids[] = {
-	{
-		.name = "at91sam9260-adc",
-		.driver_data = (unsigned long)&at91sam9260_caps,
-	}, {
-		.name = "at91sam9rl-adc",
-		.driver_data = (unsigned long)&at91sam9rl_caps,
-	}, {
-		.name = "at91sam9g45-adc",
-		.driver_data = (unsigned long)&at91sam9g45_caps,
-	}, {
-		.name = "at91sam9x5-adc",
-		.driver_data = (unsigned long)&at91sam9x5_caps,
-	}, {
-		/* terminator */
-	}
-};
-MODULE_DEVICE_TABLE(platform, at91_adc_ids);
-
 static struct platform_driver at91_adc_driver = {
 	.probe = at91_adc_probe,
 	.remove = at91_adc_remove,
-	.id_table = at91_adc_ids,
 	.driver = {
 		   .name = DRIVER_NAME,
-		   .of_match_table = of_match_ptr(at91_adc_dt_ids),
-		   .pm = &at91_adc_pm_ops,
+		   .of_match_table = at91_adc_dt_ids,
+		   .pm = pm_sleep_ptr(&at91_adc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/axp20x_adc.c b/drivers/iio/adc/axp20x_adc.c
index 88059480da17..53bf7d4899d2 100644
--- a/drivers/iio/adc/axp20x_adc.c
+++ b/drivers/iio/adc/axp20x_adc.c
@@ -9,10 +9,10 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/thermal.h>
 
@@ -67,7 +67,7 @@ struct axp_data;
 
 struct axp20x_adc_iio {
 	struct regmap		*regmap;
-	struct axp_data		*data;
+	const struct axp_data	*data;
 };
 
 enum axp20x_adc_channel_v {
@@ -186,6 +186,8 @@ static const struct iio_chan_spec axp20x_adc_channels[] = {
 			   AXP20X_BATT_CHRG_I_H),
 	AXP20X_ADC_CHANNEL(AXP20X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
 			   AXP20X_BATT_DISCHRG_I_H),
+	AXP20X_ADC_CHANNEL(AXP20X_TS_IN, "ts_v", IIO_VOLTAGE,
+			   AXP20X_TS_IN_H),
 };
 
 static const struct iio_chan_spec axp22x_adc_channels[] = {
@@ -203,6 +205,8 @@ static const struct iio_chan_spec axp22x_adc_channels[] = {
 			   AXP20X_BATT_CHRG_I_H),
 	AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
 			   AXP20X_BATT_DISCHRG_I_H),
+	AXP20X_ADC_CHANNEL(AXP22X_TS_IN, "ts_v", IIO_VOLTAGE,
+			   AXP22X_TS_ADC_H),
 };
 
 static const struct iio_chan_spec axp813_adc_channels[] = {
@@ -222,6 +226,8 @@ static const struct iio_chan_spec axp813_adc_channels[] = {
 			   AXP20X_BATT_CHRG_I_H),
 	AXP20X_ADC_CHANNEL(AXP22X_BATT_DISCHRG_I, "batt_dischrg_i", IIO_CURRENT,
 			   AXP20X_BATT_DISCHRG_I_H),
+	AXP20X_ADC_CHANNEL(AXP813_TS_IN, "ts_v", IIO_VOLTAGE,
+			   AXP288_TS_ADC_H),
 };
 
 static int axp20x_adc_raw(struct iio_dev *indio_dev,
@@ -251,19 +257,8 @@ static int axp22x_adc_raw(struct iio_dev *indio_dev,
 			  struct iio_chan_spec const *chan, int *val)
 {
 	struct axp20x_adc_iio *info = iio_priv(indio_dev);
-	int size;
 
-	/*
-	 * N.B.: Unlike the Chinese datasheets tell, the charging current is
-	 * stored on 12 bits, not 13 bits. Only discharging current is on 13
-	 * bits.
-	 */
-	if (chan->type == IIO_CURRENT && chan->channel == AXP22X_BATT_DISCHRG_I)
-		size = 13;
-	else
-		size = 12;
-
-	*val = axp20x_read_variable_width(info->regmap, chan->address, size);
+	*val = axp20x_read_variable_width(info->regmap, chan->address, 12);
 	if (*val < 0)
 		return *val;
 
@@ -307,11 +302,36 @@ static int axp20x_adc_scale_voltage(int channel, int *val, int *val2)
 		*val2 = 400000;
 		return IIO_VAL_INT_PLUS_MICRO;
 
+	case AXP20X_TS_IN:
+		/* 0.8 mV per LSB */
+		*val = 0;
+		*val2 = 800000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
 	default:
 		return -EINVAL;
 	}
 }
 
+static int axp22x_adc_scale_voltage(int channel, int *val, int *val2)
+{
+	switch (channel) {
+	case AXP22X_BATT_V:
+		/* 1.1 mV per LSB */
+		*val = 1;
+		*val2 = 100000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	case AXP22X_TS_IN:
+		/* 0.8 mV per LSB */
+		*val = 0;
+		*val2 = 800000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	default:
+		return -EINVAL;
+	}
+}
 static int axp813_adc_scale_voltage(int channel, int *val, int *val2)
 {
 	switch (channel) {
@@ -325,6 +345,12 @@ static int axp813_adc_scale_voltage(int channel, int *val, int *val2)
 		*val2 = 100000;
 		return IIO_VAL_INT_PLUS_MICRO;
 
+	case AXP813_TS_IN:
+		/* 0.8 mV per LSB */
+		*val = 0;
+		*val2 = 800000;
+		return IIO_VAL_INT_PLUS_MICRO;
+
 	default:
 		return -EINVAL;
 	}
@@ -378,17 +404,11 @@ static int axp22x_adc_scale(struct iio_chan_spec const *chan, int *val,
 {
 	switch (chan->type) {
 	case IIO_VOLTAGE:
-		if (chan->channel != AXP22X_BATT_V)
-			return -EINVAL;
-
-		*val = 1;
-		*val2 = 100000;
-		return IIO_VAL_INT_PLUS_MICRO;
+		return axp22x_adc_scale_voltage(chan->channel, val, val2);
 
 	case IIO_CURRENT:
-		*val = 0;
-		*val2 = 500000;
-		return IIO_VAL_INT_PLUS_MICRO;
+		*val = 1;
+		return IIO_VAL_INT;
 
 	case IIO_TEMP:
 		*val = 100;
@@ -488,6 +508,7 @@ static int axp22x_read_raw(struct iio_dev *indio_dev,
 {
 	switch (mask) {
 	case IIO_CHAN_INFO_OFFSET:
+		/* For PMIC temp only */
 		*val = -2677;
 		return IIO_VAL_INT;
 
@@ -668,19 +689,17 @@ static int axp20x_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	info->regmap = axp20x_dev->regmap;
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	if (!pdev->dev.of_node) {
+	if (!dev_fwnode(&pdev->dev)) {
 		const struct platform_device_id *id;
 
 		id = platform_get_device_id(pdev);
-		info->data = (struct axp_data *)id->driver_data;
+		info->data = (const struct axp_data *)id->driver_data;
 	} else {
 		struct device *dev = &pdev->dev;
 
-		info->data = (struct axp_data *)of_device_get_match_data(dev);
+		info->data = device_get_match_data(dev);
 	}
 
 	indio_dev->name = platform_get_device_id(pdev)->name;
@@ -744,7 +763,7 @@ static int axp20x_remove(struct platform_device *pdev)
 static struct platform_driver axp20x_adc_driver = {
 	.driver = {
 		.name = "axp20x-adc",
-		.of_match_table = of_match_ptr(axp20x_adc_of_match),
+		.of_match_table = axp20x_adc_of_match,
 	},
 	.id_table = axp20x_adc_id_match,
 	.probe = axp20x_probe,
diff --git a/drivers/iio/adc/axp288_adc.c b/drivers/iio/adc/axp288_adc.c
index 8ea2aed6d6f5..580361bd9849 100644
--- a/drivers/iio/adc/axp288_adc.c
+++ b/drivers/iio/adc/axp288_adc.c
@@ -196,6 +196,14 @@ static const struct dmi_system_id axp288_adc_ts_bias_override[] = {
 		},
 		.driver_data = (void *)(uintptr_t)AXP288_ADC_TS_BIAS_80UA,
 	},
+	{
+		/* Nuvision Solo 10 Draw */
+		.matches = {
+		  DMI_MATCH(DMI_SYS_VENDOR, "TMAX"),
+		  DMI_MATCH(DMI_PRODUCT_NAME, "TM101W610L"),
+		},
+		.driver_data = (void *)(uintptr_t)AXP288_ADC_TS_BIAS_80UA,
+	},
 	{}
 };
 
@@ -259,7 +267,7 @@ static int axp288_adc_probe(struct platform_device *pdev)
 	info->irq = platform_get_irq(pdev, 0);
 	if (info->irq < 0)
 		return info->irq;
-	platform_set_drvdata(pdev, indio_dev);
+
 	info->regmap = axp20x->regmap;
 	/*
 	 * Set ADC to enabled state at all time, including system suspend.
@@ -271,37 +279,17 @@ static int axp288_adc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = pdev->name;
 	indio_dev->channels = axp288_adc_channels;
 	indio_dev->num_channels = ARRAY_SIZE(axp288_adc_channels);
 	indio_dev->info = &axp288_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	ret = iio_map_array_register(indio_dev, axp288_adc_default_maps);
+
+	ret = devm_iio_map_array_register(&pdev->dev, indio_dev, axp288_adc_default_maps);
 	if (ret < 0)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&pdev->dev, "unable to register iio device\n");
-		goto err_array_unregister;
-	}
-	return 0;
-
-err_array_unregister:
-	iio_map_array_unregister(indio_dev);
-
-	return ret;
-}
-
-static int axp288_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-
-	iio_device_unregister(indio_dev);
-	iio_map_array_unregister(indio_dev);
-
-	return 0;
+	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
 static const struct platform_device_id axp288_adc_id_table[] = {
@@ -311,7 +299,6 @@ static const struct platform_device_id axp288_adc_id_table[] = {
 
 static struct platform_driver axp288_adc_driver = {
 	.probe = axp288_adc_probe,
-	.remove = axp288_adc_remove,
 	.id_table = axp288_adc_id_table,
 	.driver = {
 		.name = "axp288_adc",
diff --git a/drivers/iio/adc/bcm_iproc_adc.c b/drivers/iio/adc/bcm_iproc_adc.c
index 5e396104ac86..44e1e53ada72 100644
--- a/drivers/iio/adc/bcm_iproc_adc.c
+++ b/drivers/iio/adc/bcm_iproc_adc.c
@@ -4,7 +4,7 @@
  */
 
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/io.h>
 #include <linux/clk.h>
 #include <linux/mfd/syscon.h>
@@ -573,8 +573,6 @@ static int iproc_adc_probe(struct platform_device *pdev)
 	}
 
 	indio_dev->name = "iproc-static-adc";
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &iproc_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = iproc_adc_iio_channels;
@@ -619,7 +617,7 @@ static struct platform_driver iproc_adc_driver = {
 	.remove	= iproc_adc_remove,
 	.driver	= {
 		.name	= "iproc-static-adc",
-		.of_match_table = of_match_ptr(iproc_adc_of_match),
+		.of_match_table = iproc_adc_of_match,
 	},
 };
 module_platform_driver(iproc_adc_driver);
diff --git a/drivers/iio/adc/berlin2-adc.c b/drivers/iio/adc/berlin2-adc.c
index 72d8fa94ab31..3d2e8b4db61a 100644
--- a/drivers/iio/adc/berlin2-adc.c
+++ b/drivers/iio/adc/berlin2-adc.c
@@ -15,7 +15,9 @@
 #include <linux/iio/machine.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/slab.h>
 #include <linux/mfd/syscon.h>
@@ -280,6 +282,13 @@ static const struct iio_info berlin2_adc_info = {
 	.read_raw	= berlin2_adc_read_raw,
 };
 
+static void berlin2_adc_powerdown(void *regmap)
+{
+	regmap_update_bits(regmap, BERLIN2_SM_CTRL,
+			   BERLIN2_SM_CTRL_ADC_POWER, 0);
+
+}
+
 static int berlin2_adc_probe(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev;
@@ -293,7 +302,6 @@ static int berlin2_adc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	priv = iio_priv(indio_dev);
-	platform_set_drvdata(pdev, indio_dev);
 
 	priv->regmap = syscon_node_to_regmap(parent_np);
 	of_node_put(parent_np);
@@ -321,7 +329,6 @@ static int berlin2_adc_probe(struct platform_device *pdev)
 	init_waitqueue_head(&priv->wq);
 	mutex_init(&priv->lock);
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = dev_name(&pdev->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &berlin2_adc_info;
@@ -334,29 +341,12 @@ static int berlin2_adc_probe(struct platform_device *pdev)
 			   BERLIN2_SM_CTRL_ADC_POWER,
 			   BERLIN2_SM_CTRL_ADC_POWER);
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		/* Power down the ADC */
-		regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
-				   BERLIN2_SM_CTRL_ADC_POWER, 0);
+	ret = devm_add_action_or_reset(&pdev->dev, berlin2_adc_powerdown,
+				       priv->regmap);
+	if (ret)
 		return ret;
-	}
-
-	return 0;
-}
-
-static int berlin2_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct berlin2_adc_priv *priv = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	/* Power down the ADC */
-	regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
-			   BERLIN2_SM_CTRL_ADC_POWER, 0);
 
-	return 0;
+	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
 static const struct of_device_id berlin2_adc_match[] = {
@@ -371,7 +361,6 @@ static struct platform_driver berlin2_adc_driver = {
 		.of_match_table	= berlin2_adc_match,
 	},
 	.probe	= berlin2_adc_probe,
-	.remove	= berlin2_adc_remove,
 };
 module_platform_driver(berlin2_adc_driver);
 
diff --git a/drivers/iio/adc/cc10001_adc.c b/drivers/iio/adc/cc10001_adc.c
index fe9257624f16..e16ac935693b 100644
--- a/drivers/iio/adc/cc10001_adc.c
+++ b/drivers/iio/adc/cc10001_adc.c
@@ -334,7 +334,6 @@ static int cc10001_adc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = dev_name(&pdev->dev);
 	indio_dev->info = &cc10001_adc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/cpcap-adc.c b/drivers/iio/adc/cpcap-adc.c
index 5086a337f4c9..b6c4ef70484e 100644
--- a/drivers/iio/adc/cpcap-adc.c
+++ b/drivers/iio/adc/cpcap-adc.c
@@ -15,9 +15,9 @@
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 
 #include <linux/iio/buffer.h>
@@ -82,7 +82,7 @@
 
 #define CPCAP_ADC_MAX_RETRIES		5	/* Calibration */
 
-/**
+/*
  * struct cpcap_adc_ato - timing settings for cpcap adc
  *
  * Unfortunately no cpcap documentation available, please document when
@@ -100,7 +100,7 @@ struct cpcap_adc_ato {
 };
 
 /**
- * struct cpcap-adc - cpcap adc device driver data
+ * struct cpcap_adc - cpcap adc device driver data
  * @reg: cpcap regmap
  * @dev: struct device
  * @vendor: cpcap vendor
@@ -121,7 +121,7 @@ struct cpcap_adc {
 	bool done;
 };
 
-/**
+/*
  * enum cpcap_adc_channel - cpcap adc channels
  */
 enum cpcap_adc_channel {
@@ -152,7 +152,7 @@ enum cpcap_adc_channel {
 	CPCAP_ADC_CHANNEL_NUM,
 };
 
-/**
+/*
  * enum cpcap_adc_timing - cpcap adc timing options
  *
  * CPCAP_ADC_TIMING_IMM seems to be immediate with no timings.
@@ -474,7 +474,7 @@ static int cpcap_adc_calibrate_one(struct cpcap_adc *ddata,
 	for (i = 0; i < CPCAP_ADC_MAX_RETRIES; i++) {
 		calibration_data[0]  = 0;
 		calibration_data[1]  = 0;
-		cal_data_diff = 0;
+
 		cpcap_adc_setup_calibrate(ddata, channel);
 		error = regmap_read(ddata->reg, calibration_register,
 				    &calibration_data[0]);
@@ -557,6 +557,7 @@ static void cpcap_adc_setup_bank(struct cpcap_adc *ddata,
 		break;
 	case CPCAP_ADC_BATTP_PI16 ... CPCAP_ADC_BATTI_PI17:
 		value1 |= CPCAP_BIT_RAND1;
+		break;
 	default:
 		break;
 	}
@@ -690,7 +691,7 @@ static void cpcap_adc_phase(struct cpcap_adc_request *req)
 		break;
 	case CPCAP_ADC_BATTI_PI17:
 		index = req->bank_index;
-		/* fallthrough */
+		fallthrough;
 	default:
 		req->result += conv_tbl[index].cal_offset;
 		req->result += conv_tbl[index].align_offset;
@@ -955,22 +956,10 @@ MODULE_DEVICE_TABLE(of, cpcap_adc_id_table);
 
 static int cpcap_adc_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *match;
 	struct cpcap_adc *ddata;
 	struct iio_dev *indio_dev;
 	int error;
 
-	match = of_match_device(of_match_ptr(cpcap_adc_id_table),
-				&pdev->dev);
-	if (!match)
-		return -EINVAL;
-
-	if (!match->data) {
-		dev_err(&pdev->dev, "no configuration data found\n");
-
-		return -ENODEV;
-	}
-
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*ddata));
 	if (!indio_dev) {
 		dev_err(&pdev->dev, "failed to allocate iio device\n");
@@ -978,15 +967,15 @@ static int cpcap_adc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 	}
 	ddata = iio_priv(indio_dev);
-	ddata->ato = match->data;
+	ddata->ato = device_get_match_data(&pdev->dev);
+	if (!ddata->ato)
+		return -ENODEV;
 	ddata->dev = &pdev->dev;
 
 	mutex_init(&ddata->lock);
 	init_waitqueue_head(&ddata->wq_data_avail);
 
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->channels = cpcap_adc_channels;
 	indio_dev->num_channels = ARRAY_SIZE(cpcap_adc_channels);
 	indio_dev->name = dev_name(&pdev->dev);
@@ -1029,7 +1018,7 @@ static int cpcap_adc_probe(struct platform_device *pdev)
 static struct platform_driver cpcap_adc_driver = {
 	.driver = {
 		.name = "cpcap_adc",
-		.of_match_table = of_match_ptr(cpcap_adc_id_table),
+		.of_match_table = cpcap_adc_id_table,
 	},
 	.probe = cpcap_adc_probe,
 };
diff --git a/drivers/iio/adc/da9150-gpadc.c b/drivers/iio/adc/da9150-gpadc.c
index ae8bcc32f63d..8f0d3fb63b67 100644
--- a/drivers/iio/adc/da9150-gpadc.c
+++ b/drivers/iio/adc/da9150-gpadc.c
@@ -330,7 +330,6 @@ static int da9150_gpadc_probe(struct platform_device *pdev)
 	}
 	gpadc = iio_priv(indio_dev);
 
-	platform_set_drvdata(pdev, indio_dev);
 	gpadc->da9150 = da9150;
 	gpadc->dev = dev;
 	mutex_init(&gpadc->lock);
@@ -347,42 +346,19 @@ static int da9150_gpadc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = iio_map_array_register(indio_dev, da9150_gpadc_default_maps);
+	ret = devm_iio_map_array_register(&pdev->dev, indio_dev, da9150_gpadc_default_maps);
 	if (ret) {
 		dev_err(dev, "Failed to register IIO maps: %d\n", ret);
 		return ret;
 	}
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &da9150_gpadc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = da9150_gpadc_channels;
 	indio_dev->num_channels = ARRAY_SIZE(da9150_gpadc_channels);
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		dev_err(dev, "Failed to register IIO device: %d\n", ret);
-		goto iio_map_unreg;
-	}
-
-	return 0;
-
-iio_map_unreg:
-	iio_map_array_unregister(indio_dev);
-
-	return ret;
-}
-
-static int da9150_gpadc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-
-	iio_device_unregister(indio_dev);
-	iio_map_array_unregister(indio_dev);
-
-	return 0;
+	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
 static struct platform_driver da9150_gpadc_driver = {
@@ -390,7 +366,6 @@ static struct platform_driver da9150_gpadc_driver = {
 		.name = "da9150-gpadc",
 	},
 	.probe = da9150_gpadc_probe,
-	.remove = da9150_gpadc_remove,
 };
 
 module_platform_driver(da9150_gpadc_driver);
diff --git a/drivers/iio/adc/dln2-adc.c b/drivers/iio/adc/dln2-adc.c
index 65c7c9329b1c..97d162a3cba4 100644
--- a/drivers/iio/adc/dln2-adc.c
+++ b/drivers/iio/adc/dln2-adc.c
@@ -248,7 +248,6 @@ static int dln2_adc_set_chan_period(struct dln2_adc *dln2,
 static int dln2_adc_read(struct dln2_adc *dln2, unsigned int channel)
 {
 	int ret, i;
-	struct iio_dev *indio_dev = platform_get_drvdata(dln2->pdev);
 	u16 conflict;
 	__le16 value;
 	int olen = sizeof(value);
@@ -257,13 +256,9 @@ static int dln2_adc_read(struct dln2_adc *dln2, unsigned int channel)
 		.chan = channel,
 	};
 
-	ret = iio_device_claim_direct_mode(indio_dev);
-	if (ret < 0)
-		return ret;
-
 	ret = dln2_adc_set_chan_enabled(dln2, channel, true);
 	if (ret < 0)
-		goto release_direct;
+		return ret;
 
 	ret = dln2_adc_set_port_enabled(dln2, true, &conflict);
 	if (ret < 0) {
@@ -300,8 +295,6 @@ disable_port:
 	dln2_adc_set_port_enabled(dln2, false, NULL);
 disable_chan:
 	dln2_adc_set_chan_enabled(dln2, channel, false);
-release_direct:
-	iio_device_release_direct_mode(indio_dev);
 
 	return ret;
 }
@@ -337,10 +330,16 @@ static int dln2_adc_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret < 0)
+			return ret;
+
 		mutex_lock(&dln2->mutex);
 		ret = dln2_adc_read(dln2, chan->channel);
 		mutex_unlock(&dln2->mutex);
 
+		iio_device_release_direct_mode(indio_dev);
+
 		if (ret < 0)
 			return ret;
 
@@ -524,10 +523,6 @@ static int dln2_adc_triggered_buffer_postenable(struct iio_dev *indio_dev)
 	u16 conflict;
 	unsigned int trigger_chan;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret)
-		return ret;
-
 	mutex_lock(&dln2->mutex);
 
 	/* Enable ADC */
@@ -541,7 +536,6 @@ static int dln2_adc_triggered_buffer_postenable(struct iio_dev *indio_dev)
 				(int)conflict);
 			ret = -EBUSY;
 		}
-		iio_triggered_buffer_predisable(indio_dev);
 		return ret;
 	}
 
@@ -555,7 +549,6 @@ static int dln2_adc_triggered_buffer_postenable(struct iio_dev *indio_dev)
 		mutex_unlock(&dln2->mutex);
 		if (ret < 0) {
 			dev_dbg(&dln2->pdev->dev, "Problem in %s\n", __func__);
-			iio_triggered_buffer_predisable(indio_dev);
 			return ret;
 		}
 	} else {
@@ -568,7 +561,7 @@ static int dln2_adc_triggered_buffer_postenable(struct iio_dev *indio_dev)
 
 static int dln2_adc_triggered_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int ret, ret2;
+	int ret;
 	struct dln2_adc *dln2 = iio_priv(indio_dev);
 
 	mutex_lock(&dln2->mutex);
@@ -586,10 +579,6 @@ static int dln2_adc_triggered_buffer_predisable(struct iio_dev *indio_dev)
 	if (ret < 0)
 		dev_dbg(&dln2->pdev->dev, "Problem in %s\n", __func__);
 
-	ret2 = iio_triggered_buffer_predisable(indio_dev);
-	if (ret == 0)
-		ret = ret2;
-
 	return ret;
 }
 
@@ -652,7 +641,6 @@ static int dln2_adc_probe(struct platform_device *pdev)
 	IIO_CHAN_SOFT_TIMESTAMP_ASSIGN(dln2->iio_channels[i], i);
 
 	indio_dev->name = DLN2_ADC_MOD_NAME;
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &dln2_adc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = dln2->iio_channels;
@@ -660,13 +648,18 @@ static int dln2_adc_probe(struct platform_device *pdev)
 	indio_dev->setup_ops = &dln2_adc_buffer_setup_ops;
 
 	dln2->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
-					    indio_dev->name, indio_dev->id);
+					    indio_dev->name,
+					    iio_device_id(indio_dev));
 	if (!dln2->trig) {
 		dev_err(dev, "failed to allocate trigger\n");
 		return -ENOMEM;
 	}
 	iio_trigger_set_drvdata(dln2->trig, dln2);
-	devm_iio_trigger_register(dev, dln2->trig);
+	ret = devm_iio_trigger_register(dev, dln2->trig);
+	if (ret) {
+		dev_err(dev, "failed to register trigger: %d\n", ret);
+		return ret;
+	}
 	iio_trigger_set_immutable(indio_dev, dln2->trig);
 
 	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
diff --git a/drivers/iio/adc/envelope-detector.c b/drivers/iio/adc/envelope-detector.c
index 28f3d6758eb5..e911c25d106d 100644
--- a/drivers/iio/adc/envelope-detector.c
+++ b/drivers/iio/adc/envelope-detector.c
@@ -31,14 +31,13 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/iio/consumer.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
@@ -343,18 +342,14 @@ static int envelope_detector_probe(struct platform_device *pdev)
 	INIT_DELAYED_WORK(&env->comp_timeout, envelope_detector_timeout);
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = dev->of_node;
 	indio_dev->info = &envelope_detector_info;
 	indio_dev->channels = &envelope_detector_iio_channel;
 	indio_dev->num_channels = 1;
 
 	env->dac = devm_iio_channel_get(dev, "dac");
-	if (IS_ERR(env->dac)) {
-		if (PTR_ERR(env->dac) != -EPROBE_DEFER)
-			dev_err(dev, "failed to get dac input channel\n");
-		return PTR_ERR(env->dac);
-	}
+	if (IS_ERR(env->dac))
+		return dev_err_probe(dev, PTR_ERR(env->dac),
+				     "failed to get dac input channel\n");
 
 	env->comp_irq = platform_get_irq_byname(pdev, "comp");
 	if (env->comp_irq < 0)
@@ -362,11 +357,9 @@ static int envelope_detector_probe(struct platform_device *pdev)
 
 	ret = devm_request_irq(dev, env->comp_irq, envelope_detector_comp_isr,
 			       0, "envelope-detector", env);
-	if (ret) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "failed to request interrupt\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to request interrupt\n");
+
 	env->comp_irq_trigger = irq_get_trigger_type(env->comp_irq);
 	if (env->comp_irq_trigger & IRQF_TRIGGER_RISING)
 		env->comp_irq_trigger_inv |= IRQF_TRIGGER_FALLING;
diff --git a/drivers/iio/adc/ep93xx_adc.c b/drivers/iio/adc/ep93xx_adc.c
index 5c97e8a511f2..fd5a9404c8dc 100644
--- a/drivers/iio/adc/ep93xx_adc.c
+++ b/drivers/iio/adc/ep93xx_adc.c
@@ -156,21 +156,16 @@ static int ep93xx_adc_probe(struct platform_device *pdev)
 	struct iio_dev *iiodev;
 	struct ep93xx_adc_priv *priv;
 	struct clk *pclk;
-	struct resource *res;
 
 	iiodev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv));
 	if (!iiodev)
 		return -ENOMEM;
 	priv = iio_priv(iiodev);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	priv->base = devm_ioremap_resource(&pdev->dev, res);
-	if (IS_ERR(priv->base)) {
-		dev_err(&pdev->dev, "Cannot map memory resource\n");
+	priv->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(priv->base))
 		return PTR_ERR(priv->base);
-	}
 
-	iiodev->dev.parent = &pdev->dev;
 	iiodev->name = dev_name(&pdev->dev);
 	iiodev->modes = INDIO_DIRECT_MODE;
 	iiodev->info = &ep93xx_adc_info;
@@ -208,7 +203,7 @@ static int ep93xx_adc_probe(struct platform_device *pdev)
 		 */
 	}
 
-	ret = clk_enable(priv->clk);
+	ret = clk_prepare_enable(priv->clk);
 	if (ret) {
 		dev_err(&pdev->dev, "Cannot enable clock\n");
 		return ret;
@@ -216,7 +211,7 @@ static int ep93xx_adc_probe(struct platform_device *pdev)
 
 	ret = iio_device_register(iiodev);
 	if (ret)
-		clk_disable(priv->clk);
+		clk_disable_unprepare(priv->clk);
 
 	return ret;
 }
@@ -227,7 +222,7 @@ static int ep93xx_adc_remove(struct platform_device *pdev)
 	struct ep93xx_adc_priv *priv = iio_priv(iiodev);
 
 	iio_device_unregister(iiodev);
-	clk_disable(priv->clk);
+	clk_disable_unprepare(priv->clk);
 
 	return 0;
 }
diff --git a/drivers/iio/adc/exynos_adc.c b/drivers/iio/adc/exynos_adc.c
index 2df7d057b249..cff1ba57fb16 100644
--- a/drivers/iio/adc/exynos_adc.c
+++ b/drivers/iio/adc/exynos_adc.c
@@ -7,6 +7,7 @@
  *  Copyright (C) 2013 Naveen Krishna Chatradhi <ch.naveen@samsung.com>
  */
 
+#include <linux/compiler.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
@@ -135,9 +136,21 @@ struct exynos_adc {
 	u32			value;
 	unsigned int            version;
 
+	bool			ts_enabled;
+
 	bool			read_ts;
 	u32			ts_x;
 	u32			ts_y;
+
+	/*
+	 * Lock to protect from potential concurrent access to the
+	 * completion callback during a manual conversion. For this driver
+	 * a wait-callback is used to wait for the conversion result,
+	 * so in the meantime no other read request (or conversion start)
+	 * must be performed, otherwise it would interfere with the
+	 * current conversion result.
+	 */
+	struct mutex		lock;
 };
 
 struct exynos_adc_data {
@@ -449,9 +462,6 @@ static void exynos_adc_exynos7_init_hw(struct exynos_adc *info)
 {
 	u32 con1, con2;
 
-	if (info->data->needs_adc_phy)
-		regmap_write(info->pmu_map, info->data->phy_offset, 1);
-
 	con1 = ADC_V2_CON1_SOFT_RESET;
 	writel(con1, ADC_V2_CON1(info->regs));
 
@@ -531,10 +541,21 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
 	unsigned long timeout;
 	int ret;
 
-	if (mask != IIO_CHAN_INFO_RAW)
+	if (mask == IIO_CHAN_INFO_SCALE) {
+		ret = regulator_get_voltage(info->vdd);
+		if (ret < 0)
+			return ret;
+
+		/* Regulator voltage is in uV, but need mV */
+		*val = ret / 1000;
+		*val2 = info->data->mask;
+
+		return IIO_VAL_FRACTIONAL;
+	} else if (mask != IIO_CHAN_INFO_RAW) {
 		return -EINVAL;
+	}
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&info->lock);
 	reinit_completion(&info->completion);
 
 	/* Select the channel to be used and Trigger conversion */
@@ -554,7 +575,7 @@ static int exynos_read_raw(struct iio_dev *indio_dev,
 		ret = IIO_VAL_INT;
 	}
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&info->lock);
 
 	return ret;
 }
@@ -565,7 +586,7 @@ static int exynos_read_s3c64xx_ts(struct iio_dev *indio_dev, int *x, int *y)
 	unsigned long timeout;
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&info->lock);
 	info->read_ts = true;
 
 	reinit_completion(&info->completion);
@@ -590,7 +611,7 @@ static int exynos_read_s3c64xx_ts(struct iio_dev *indio_dev, int *x, int *y)
 	}
 
 	info->read_ts = false;
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&info->lock);
 
 	return ret;
 }
@@ -633,7 +654,7 @@ static irqreturn_t exynos_ts_isr(int irq, void *dev_id)
 	bool pressed;
 	int ret;
 
-	while (info->input->users) {
+	while (READ_ONCE(info->ts_enabled)) {
 		ret = exynos_read_s3c64xx_ts(dev, &x, &y);
 		if (ret == -ETIMEDOUT)
 			break;
@@ -683,6 +704,7 @@ static const struct iio_info exynos_adc_iio_info = {
 	.channel = _index,				\
 	.address = _index,				\
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),	\
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SCALE),	\
 	.datasheet_name = _id,				\
 }
 
@@ -712,6 +734,7 @@ static int exynos_adc_ts_open(struct input_dev *dev)
 {
 	struct exynos_adc *info = input_get_drvdata(dev);
 
+	WRITE_ONCE(info->ts_enabled, true);
 	enable_irq(info->tsirq);
 
 	return 0;
@@ -721,6 +744,7 @@ static void exynos_adc_ts_close(struct input_dev *dev)
 {
 	struct exynos_adc *info = input_get_drvdata(dev);
 
+	WRITE_ONCE(info->ts_enabled, false);
 	disable_irq(info->tsirq);
 }
 
@@ -754,9 +778,9 @@ static int exynos_adc_ts_init(struct exynos_adc *info)
 		return ret;
 	}
 
-	disable_irq(info->tsirq);
 	ret = request_threaded_irq(info->tsirq, NULL, exynos_ts_isr,
-				   IRQF_ONESHOT, "touchscreen", info);
+				   IRQF_ONESHOT | IRQF_NO_AUTOEN,
+				   "touchscreen", info);
 	if (ret)
 		input_unregister_device(info->input);
 
@@ -770,7 +794,7 @@ static int exynos_adc_probe(struct platform_device *pdev)
 	struct s3c2410_ts_mach_info *pdata = dev_get_platdata(&pdev->dev);
 	struct iio_dev *indio_dev = NULL;
 	bool has_ts = false;
-	int ret = -ENODEV;
+	int ret;
 	int irq;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(struct exynos_adc));
@@ -835,11 +859,9 @@ static int exynos_adc_probe(struct platform_device *pdev)
 	}
 
 	info->vdd = devm_regulator_get(&pdev->dev, "vdd");
-	if (IS_ERR(info->vdd)) {
-		dev_err(&pdev->dev, "failed getting regulator, err = %ld\n",
-							PTR_ERR(info->vdd));
-		return PTR_ERR(info->vdd);
-	}
+	if (IS_ERR(info->vdd))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->vdd),
+				     "failed getting regulator");
 
 	ret = regulator_enable(info->vdd);
 	if (ret)
@@ -856,13 +878,13 @@ static int exynos_adc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &exynos_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = exynos_adc_iio_channels;
 	indio_dev->num_channels = info->data->num_channels;
 
+	mutex_init(&info->lock);
+
 	ret = request_irq(info->irq, exynos_adc_isr,
 					0, dev_name(&pdev->dev), info);
 	if (ret < 0) {
@@ -946,7 +968,6 @@ static int exynos_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int exynos_adc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -979,11 +1000,9 @@ static int exynos_adc_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(exynos_adc_pm_ops,
-			exynos_adc_suspend,
-			exynos_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(exynos_adc_pm_ops, exynos_adc_suspend,
+				exynos_adc_resume);
 
 static struct platform_driver exynos_adc_driver = {
 	.probe		= exynos_adc_probe,
@@ -991,7 +1010,7 @@ static struct platform_driver exynos_adc_driver = {
 	.driver		= {
 		.name	= "exynos-adc",
 		.of_match_table = exynos_adc_match,
-		.pm	= &exynos_adc_pm_ops,
+		.pm	= pm_sleep_ptr(&exynos_adc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/fsl-imx25-gcq.c b/drivers/iio/adc/fsl-imx25-gcq.c
index fa71489195c6..551e83ae573c 100644
--- a/drivers/iio/adc/fsl-imx25-gcq.c
+++ b/drivers/iio/adc/fsl-imx25-gcq.c
@@ -40,6 +40,15 @@ struct mx25_gcq_priv {
 	int irq;
 	struct regulator *vref[4];
 	u32 channel_vref_mv[MX25_NUM_CFGS];
+	/*
+	 * Lock to protect the device state during a potential concurrent
+	 * read access from userspace. Reading a raw value requires a sequence
+	 * of register writes, then a wait for a completion callback,
+	 * and finally a register read, during which userspace could issue
+	 * another read request. This lock protects a read access from
+	 * ocurring before another one has finished.
+	 */
+	struct mutex lock;
 };
 
 #define MX25_CQG_CHAN(chan, id) {\
@@ -137,9 +146,9 @@ static int mx25_gcq_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&priv->lock);
 		ret = mx25_gcq_get_raw_value(&indio_dev->dev, chan, priv, val);
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&priv->lock);
 		return ret;
 
 	case IIO_CHAN_INFO_SCALE:
@@ -163,13 +172,35 @@ static const struct regmap_config mx25_gcq_regconfig = {
 	.reg_stride = 4,
 };
 
+static int mx25_gcq_ext_regulator_setup(struct device *dev,
+					struct mx25_gcq_priv *priv, u32 refp)
+{
+	char reg_name[12];
+	int ret;
+
+	if (priv->vref[refp])
+		return 0;
+
+	ret = snprintf(reg_name, sizeof(reg_name), "vref-%s",
+		       mx25_gcq_refp_names[refp]);
+	if (ret < 0)
+		return ret;
+
+	priv->vref[refp] = devm_regulator_get_optional(dev, reg_name);
+	if (IS_ERR(priv->vref[refp]))
+		return dev_err_probe(dev, PTR_ERR(priv->vref[refp]),
+				     "Error, trying to use external voltage reference without a %s regulator.",
+				     reg_name);
+
+	return 0;
+}
+
 static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 			       struct mx25_gcq_priv *priv)
 {
 	struct device_node *np = pdev->dev.of_node;
 	struct device_node *child;
 	struct device *dev = &pdev->dev;
-	unsigned int refp_used[4] = {};
 	int ret, i;
 
 	/*
@@ -185,19 +216,6 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 			     MX25_ADCQ_CFG_IN(i) |
 			     MX25_ADCQ_CFG_REFN_NGND2);
 
-	/*
-	 * First get all regulators to store them in channel_vref_mv if
-	 * necessary. Later we use that information for proper IIO scale
-	 * information.
-	 */
-	priv->vref[MX25_ADC_REFP_INT] = NULL;
-	priv->vref[MX25_ADC_REFP_EXT] =
-		devm_regulator_get_optional(&pdev->dev, "vref-ext");
-	priv->vref[MX25_ADC_REFP_XP] =
-		devm_regulator_get_optional(&pdev->dev, "vref-xp");
-	priv->vref[MX25_ADC_REFP_YP] =
-		devm_regulator_get_optional(&pdev->dev, "vref-yp");
-
 	for_each_child_of_node(np, child) {
 		u32 reg;
 		u32 refp = MX25_ADCQ_CFG_REFP_INT;
@@ -224,11 +242,10 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 		case MX25_ADC_REFP_EXT:
 		case MX25_ADC_REFP_XP:
 		case MX25_ADC_REFP_YP:
-			if (IS_ERR(priv->vref[refp])) {
-				dev_err(dev, "Error, trying to use external voltage reference without a vref-%s regulator.",
-					mx25_gcq_refp_names[refp]);
+			ret = mx25_gcq_ext_regulator_setup(&pdev->dev, priv, refp);
+			if (ret) {
 				of_node_put(child);
-				return PTR_ERR(priv->vref[refp]);
+				return ret;
 			}
 			priv->channel_vref_mv[reg] =
 				regulator_get_voltage(priv->vref[refp]);
@@ -244,8 +261,6 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 			return -EINVAL;
 		}
 
-		++refp_used[refp];
-
 		/*
 		 * Shift the read values to the correct positions within the
 		 * register.
@@ -276,15 +291,6 @@ static int mx25_gcq_setup_cfgs(struct platform_device *pdev,
 	regmap_write(priv->regs, MX25_ADCQ_CR,
 		     MX25_ADCQ_CR_PDMSK | MX25_ADCQ_CR_QSM_FQS);
 
-	/* Remove unused regulators */
-	for (i = 0; i != 4; ++i) {
-		if (!refp_used[i]) {
-			if (!IS_ERR_OR_NULL(priv->vref[i]))
-				devm_regulator_put(priv->vref[i]);
-			priv->vref[i] = NULL;
-		}
-	}
-
 	return 0;
 }
 
@@ -294,19 +300,17 @@ static int mx25_gcq_probe(struct platform_device *pdev)
 	struct mx25_gcq_priv *priv;
 	struct mx25_tsadc *tsadc = dev_get_drvdata(pdev->dev.parent);
 	struct device *dev = &pdev->dev;
-	struct resource *res;
 	void __iomem *mem;
 	int ret;
 	int i;
 
-	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	priv = iio_priv(indio_dev);
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mem = devm_ioremap_resource(dev, res);
+	mem = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mem))
 		return PTR_ERR(mem);
 
@@ -316,6 +320,8 @@ static int mx25_gcq_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->regs);
 	}
 
+	mutex_init(&priv->lock);
+
 	init_completion(&priv->completed);
 
 	ret = mx25_gcq_setup_cfgs(pdev, priv);
@@ -338,21 +344,17 @@ static int mx25_gcq_probe(struct platform_device *pdev)
 		goto err_vref_disable;
 	}
 
-	priv->irq = platform_get_irq(pdev, 0);
-	if (priv->irq <= 0) {
-		ret = priv->irq;
-		if (!ret)
-			ret = -ENXIO;
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
 		goto err_clk_unprepare;
-	}
 
+	priv->irq = ret;
 	ret = request_irq(priv->irq, mx25_gcq_irq, 0, pdev->name, priv);
 	if (ret) {
 		dev_err(dev, "Failed requesting IRQ\n");
 		goto err_clk_unprepare;
 	}
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->channels = mx25_gcq_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mx25_gcq_channels);
 	indio_dev->info = &mx25_gcq_iio_info;
diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
index 8da45bf36d36..771fa12bdc02 100644
--- a/drivers/iio/adc/hi8435.c
+++ b/drivers/iio/adc/hi8435.c
@@ -15,9 +15,7 @@
 #include <linux/iio/triggered_event.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
-#include <linux/of_gpio.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/gpio/consumer.h>
 
@@ -51,7 +49,7 @@ struct hi8435_priv {
 
 	unsigned threshold_lo[2]; /* GND-Open and Supply-Open thresholds */
 	unsigned threshold_hi[2]; /* GND-Open and Supply-Open thresholds */
-	u8 reg_buffer[3] ____cacheline_aligned;
+	u8 reg_buffer[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val)
@@ -352,7 +350,7 @@ static const struct iio_enum hi8435_sensing_mode = {
 
 static const struct iio_chan_spec_ext_info hi8435_ext_info[] = {
 	IIO_ENUM("sensing_mode", IIO_SEPARATE, &hi8435_sensing_mode),
-	IIO_ENUM_AVAILABLE("sensing_mode", &hi8435_sensing_mode),
+	IIO_ENUM_AVAILABLE("sensing_mode", IIO_SHARED_BY_TYPE, &hi8435_sensing_mode),
 	{},
 };
 
@@ -485,11 +483,8 @@ static int hi8435_probe(struct spi_device *spi)
 		gpiod_set_value_cansleep(reset_gpio, 1);
 	}
 
-	spi_set_drvdata(spi, idev);
 	mutex_init(&priv->lock);
 
-	idev->dev.parent	= &spi->dev;
-	idev->dev.of_node	= spi->dev.of_node;
 	idev->name		= spi_get_device_id(spi)->name;
 	idev->modes		= INDIO_DIRECT_MODE;
 	idev->info		= &hi8435_info;
@@ -534,7 +529,7 @@ static const struct of_device_id hi8435_dt_ids[] = {
 MODULE_DEVICE_TABLE(of, hi8435_dt_ids);
 
 static const struct spi_device_id hi8435_id[] = {
-	{ "hi8435", 0},
+	{ "hi8435", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, hi8435_id);
@@ -542,7 +537,7 @@ MODULE_DEVICE_TABLE(spi, hi8435_id);
 static struct spi_driver hi8435_driver = {
 	.driver	= {
 		.name		= DRV_NAME,
-		.of_match_table	= of_match_ptr(hi8435_dt_ids),
+		.of_match_table	= hi8435_dt_ids,
 	},
 	.probe		= hi8435_probe,
 	.id_table	= hi8435_id,
diff --git a/drivers/iio/adc/hx711.c b/drivers/iio/adc/hx711.c
index c8686558429b..f7ee856a6b8b 100644
--- a/drivers/iio/adc/hx711.c
+++ b/drivers/iio/adc/hx711.c
@@ -86,9 +86,9 @@ struct hx711_data {
 	struct mutex		lock;
 	/*
 	 * triggered buffer
-	 * 2x32-bit channel + 64-bit timestamp
+	 * 2x32-bit channel + 64-bit naturally aligned timestamp
 	 */
-	u32			buffer[4];
+	u32			buffer[4] __aligned(8);
 	/*
 	 * delay after a rising edge on SCK until the data is ready DOUT
 	 * this is dependent on the hx711 where the datasheet tells a
@@ -551,7 +551,6 @@ static int hx711_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = "hx711";
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &hx711_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = hx711_chan_spec;
diff --git a/drivers/iio/adc/imx7d_adc.c b/drivers/iio/adc/imx7d_adc.c
index 2a2fbf788e95..86caff1d006b 100644
--- a/drivers/iio/adc/imx7d_adc.c
+++ b/drivers/iio/adc/imx7d_adc.c
@@ -11,6 +11,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
@@ -493,29 +494,22 @@ static int imx7d_adc_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-		return irq;
+		return dev_err_probe(dev, irq, "Failed getting irq\n");
 
 	info->clk = devm_clk_get(dev, "adc");
-	if (IS_ERR(info->clk)) {
-		ret = PTR_ERR(info->clk);
-		dev_err(dev, "Failed getting clock, err = %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(info->clk))
+		return dev_err_probe(dev, PTR_ERR(info->clk), "Failed getting clock\n");
 
 	info->vref = devm_regulator_get(dev, "vref");
-	if (IS_ERR(info->vref)) {
-		ret = PTR_ERR(info->vref);
-		dev_err(dev,
-			"Failed getting reference voltage, err = %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(info->vref))
+		return dev_err_probe(dev, PTR_ERR(info->vref),
+				     "Failed getting reference voltage\n");
 
 	platform_set_drvdata(pdev, indio_dev);
 
 	init_completion(&info->completion);
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &imx7d_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = imx7d_adc_iio_channels;
@@ -529,12 +523,11 @@ static int imx7d_adc_probe(struct platform_device *pdev)
 
 	imx7d_adc_feature_config(info);
 
-	ret = imx7d_adc_enable(&indio_dev->dev);
+	ret = imx7d_adc_enable(dev);
 	if (ret)
 		return ret;
 
-	ret = devm_add_action_or_reset(dev, __imx7d_adc_disable,
-				       &indio_dev->dev);
+	ret = devm_add_action_or_reset(dev, __imx7d_adc_disable, dev);
 	if (ret)
 		return ret;
 
@@ -547,14 +540,15 @@ static int imx7d_adc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_disable, imx7d_adc_enable);
+static DEFINE_SIMPLE_DEV_PM_OPS(imx7d_adc_pm_ops, imx7d_adc_disable,
+				imx7d_adc_enable);
 
 static struct platform_driver imx7d_adc_driver = {
 	.probe		= imx7d_adc_probe,
 	.driver		= {
 		.name	= "imx7d_adc",
 		.of_match_table = imx7d_adc_match,
-		.pm	= &imx7d_adc_pm_ops,
+		.pm	= pm_sleep_ptr(&imx7d_adc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/imx8qxp-adc.c b/drivers/iio/adc/imx8qxp-adc.c
new file mode 100644
index 000000000000..36777b827165
--- /dev/null
+++ b/drivers/iio/adc/imx8qxp-adc.c
@@ -0,0 +1,496 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * NXP i.MX8QXP ADC driver
+ *
+ * Based on the work of Haibo Chen <haibo.chen@nxp.com>
+ * The initial developer of the original code is Haibo Chen.
+ * Portions created by Haibo Chen are Copyright (C) 2018 NXP.
+ * All Rights Reserved.
+ *
+ * Copyright (C) 2018 NXP
+ * Copyright (C) 2021 Cai Huoqing
+ */
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/iio/iio.h>
+
+#define ADC_DRIVER_NAME		"imx8qxp-adc"
+
+/* Register map definition */
+#define IMX8QXP_ADR_ADC_CTRL		0x10
+#define IMX8QXP_ADR_ADC_STAT		0x14
+#define IMX8QXP_ADR_ADC_IE		0x18
+#define IMX8QXP_ADR_ADC_DE		0x1c
+#define IMX8QXP_ADR_ADC_CFG		0x20
+#define IMX8QXP_ADR_ADC_FCTRL		0x30
+#define IMX8QXP_ADR_ADC_SWTRIG		0x34
+#define IMX8QXP_ADR_ADC_TCTRL(tid)	(0xc0 + (tid) * 4)
+#define IMX8QXP_ADR_ADC_CMDH(cid)	(0x100 + (cid) * 8)
+#define IMX8QXP_ADR_ADC_CMDL(cid)	(0x104 + (cid) * 8)
+#define IMX8QXP_ADR_ADC_RESFIFO		0x300
+#define IMX8QXP_ADR_ADC_TST		0xffc
+
+/* ADC bit shift */
+#define IMX8QXP_ADC_IE_FWMIE_MASK		GENMASK(1, 0)
+#define IMX8QXP_ADC_CTRL_FIFO_RESET_MASK	BIT(8)
+#define IMX8QXP_ADC_CTRL_SOFTWARE_RESET_MASK	BIT(1)
+#define IMX8QXP_ADC_CTRL_ADC_EN_MASK		BIT(0)
+#define IMX8QXP_ADC_TCTRL_TCMD_MASK		GENMASK(31, 24)
+#define IMX8QXP_ADC_TCTRL_TDLY_MASK		GENMASK(23, 16)
+#define IMX8QXP_ADC_TCTRL_TPRI_MASK		GENMASK(15, 8)
+#define IMX8QXP_ADC_TCTRL_HTEN_MASK		GENMASK(7, 0)
+#define IMX8QXP_ADC_CMDL_CSCALE_MASK		GENMASK(13, 8)
+#define IMX8QXP_ADC_CMDL_MODE_MASK		BIT(7)
+#define IMX8QXP_ADC_CMDL_DIFF_MASK		BIT(6)
+#define IMX8QXP_ADC_CMDL_ABSEL_MASK		BIT(5)
+#define IMX8QXP_ADC_CMDL_ADCH_MASK		GENMASK(2, 0)
+#define IMX8QXP_ADC_CMDH_NEXT_MASK		GENMASK(31, 24)
+#define IMX8QXP_ADC_CMDH_LOOP_MASK		GENMASK(23, 16)
+#define IMX8QXP_ADC_CMDH_AVGS_MASK		GENMASK(15, 12)
+#define IMX8QXP_ADC_CMDH_STS_MASK		BIT(8)
+#define IMX8QXP_ADC_CMDH_LWI_MASK		GENMASK(7, 7)
+#define IMX8QXP_ADC_CMDH_CMPEN_MASK		GENMASK(0, 0)
+#define IMX8QXP_ADC_CFG_PWREN_MASK		BIT(28)
+#define IMX8QXP_ADC_CFG_PUDLY_MASK		GENMASK(23, 16)
+#define IMX8QXP_ADC_CFG_REFSEL_MASK		GENMASK(7, 6)
+#define IMX8QXP_ADC_CFG_PWRSEL_MASK		GENMASK(5, 4)
+#define IMX8QXP_ADC_CFG_TPRICTRL_MASK		GENMASK(3, 0)
+#define IMX8QXP_ADC_FCTRL_FWMARK_MASK		GENMASK(20, 16)
+#define IMX8QXP_ADC_FCTRL_FCOUNT_MASK		GENMASK(4, 0)
+#define IMX8QXP_ADC_RESFIFO_VAL_MASK		GENMASK(18, 3)
+
+/* ADC PARAMETER*/
+#define IMX8QXP_ADC_CMDL_CHANNEL_SCALE_FULL		GENMASK(5, 0)
+#define IMX8QXP_ADC_CMDL_SEL_A_A_B_CHANNEL		0
+#define IMX8QXP_ADC_CMDL_STANDARD_RESOLUTION		0
+#define IMX8QXP_ADC_CMDL_MODE_SINGLE			0
+#define IMX8QXP_ADC_CMDH_LWI_INCREMENT_DIS		0
+#define IMX8QXP_ADC_CMDH_CMPEN_DIS			0
+#define IMX8QXP_ADC_PAUSE_EN				BIT(31)
+#define IMX8QXP_ADC_TCTRL_TPRI_PRIORITY_HIGH		0
+
+#define IMX8QXP_ADC_TCTRL_HTEN_HW_TIRG_DIS		0
+
+#define IMX8QXP_ADC_TIMEOUT		msecs_to_jiffies(100)
+
+struct imx8qxp_adc {
+	struct device *dev;
+	void __iomem *regs;
+	struct clk *clk;
+	struct clk *ipg_clk;
+	struct regulator *vref;
+	/* Serialise ADC channel reads */
+	struct mutex lock;
+	struct completion completion;
+};
+
+#define IMX8QXP_ADC_CHAN(_idx) {				\
+	.type = IIO_VOLTAGE,					\
+	.indexed = 1,						\
+	.channel = (_idx),					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |	\
+				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+}
+
+static const struct iio_chan_spec imx8qxp_adc_iio_channels[] = {
+	IMX8QXP_ADC_CHAN(0),
+	IMX8QXP_ADC_CHAN(1),
+	IMX8QXP_ADC_CHAN(2),
+	IMX8QXP_ADC_CHAN(3),
+	IMX8QXP_ADC_CHAN(4),
+	IMX8QXP_ADC_CHAN(5),
+	IMX8QXP_ADC_CHAN(6),
+	IMX8QXP_ADC_CHAN(7),
+};
+
+static void imx8qxp_adc_reset(struct imx8qxp_adc *adc)
+{
+	u32 ctrl;
+
+	/*software reset, need to clear the set bit*/
+	ctrl = readl(adc->regs + IMX8QXP_ADR_ADC_CTRL);
+	ctrl |= FIELD_PREP(IMX8QXP_ADC_CTRL_SOFTWARE_RESET_MASK, 1);
+	writel(ctrl, adc->regs + IMX8QXP_ADR_ADC_CTRL);
+	udelay(10);
+	ctrl &= ~FIELD_PREP(IMX8QXP_ADC_CTRL_SOFTWARE_RESET_MASK, 1);
+	writel(ctrl, adc->regs + IMX8QXP_ADR_ADC_CTRL);
+
+	/* reset the fifo */
+	ctrl |= FIELD_PREP(IMX8QXP_ADC_CTRL_FIFO_RESET_MASK, 1);
+	writel(ctrl, adc->regs + IMX8QXP_ADR_ADC_CTRL);
+}
+
+static void imx8qxp_adc_reg_config(struct imx8qxp_adc *adc, int channel)
+{
+	u32 adc_cfg, adc_tctrl, adc_cmdl, adc_cmdh;
+
+	/* ADC configuration */
+	adc_cfg = FIELD_PREP(IMX8QXP_ADC_CFG_PWREN_MASK, 1) |
+		  FIELD_PREP(IMX8QXP_ADC_CFG_PUDLY_MASK, 0x80)|
+		  FIELD_PREP(IMX8QXP_ADC_CFG_REFSEL_MASK, 0) |
+		  FIELD_PREP(IMX8QXP_ADC_CFG_PWRSEL_MASK, 3) |
+		  FIELD_PREP(IMX8QXP_ADC_CFG_TPRICTRL_MASK, 0);
+	writel(adc_cfg, adc->regs + IMX8QXP_ADR_ADC_CFG);
+
+	/* config the trigger control */
+	adc_tctrl = FIELD_PREP(IMX8QXP_ADC_TCTRL_TCMD_MASK, 1) |
+		    FIELD_PREP(IMX8QXP_ADC_TCTRL_TDLY_MASK, 0) |
+		    FIELD_PREP(IMX8QXP_ADC_TCTRL_TPRI_MASK, IMX8QXP_ADC_TCTRL_TPRI_PRIORITY_HIGH) |
+		    FIELD_PREP(IMX8QXP_ADC_TCTRL_HTEN_MASK, IMX8QXP_ADC_TCTRL_HTEN_HW_TIRG_DIS);
+	writel(adc_tctrl, adc->regs + IMX8QXP_ADR_ADC_TCTRL(0));
+
+	/* config the cmd */
+	adc_cmdl = FIELD_PREP(IMX8QXP_ADC_CMDL_CSCALE_MASK, IMX8QXP_ADC_CMDL_CHANNEL_SCALE_FULL) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDL_MODE_MASK, IMX8QXP_ADC_CMDL_STANDARD_RESOLUTION) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDL_DIFF_MASK, IMX8QXP_ADC_CMDL_MODE_SINGLE) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDL_ABSEL_MASK, IMX8QXP_ADC_CMDL_SEL_A_A_B_CHANNEL) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDL_ADCH_MASK, channel);
+	writel(adc_cmdl, adc->regs + IMX8QXP_ADR_ADC_CMDL(0));
+
+	adc_cmdh = FIELD_PREP(IMX8QXP_ADC_CMDH_NEXT_MASK, 0) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDH_LOOP_MASK, 0) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDH_AVGS_MASK, 7) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDH_STS_MASK, 0) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDH_LWI_MASK, IMX8QXP_ADC_CMDH_LWI_INCREMENT_DIS) |
+		   FIELD_PREP(IMX8QXP_ADC_CMDH_CMPEN_MASK, IMX8QXP_ADC_CMDH_CMPEN_DIS);
+	writel(adc_cmdh, adc->regs + IMX8QXP_ADR_ADC_CMDH(0));
+}
+
+static void imx8qxp_adc_fifo_config(struct imx8qxp_adc *adc)
+{
+	u32 fifo_ctrl, interrupt_en;
+
+	fifo_ctrl = readl(adc->regs + IMX8QXP_ADR_ADC_FCTRL);
+	fifo_ctrl &= ~IMX8QXP_ADC_FCTRL_FWMARK_MASK;
+	/* set the watermark level to 1 */
+	fifo_ctrl |= FIELD_PREP(IMX8QXP_ADC_FCTRL_FWMARK_MASK, 0);
+	writel(fifo_ctrl, adc->regs + IMX8QXP_ADR_ADC_FCTRL);
+
+	/* FIFO Watermark Interrupt Enable */
+	interrupt_en = readl(adc->regs + IMX8QXP_ADR_ADC_IE);
+	interrupt_en |= FIELD_PREP(IMX8QXP_ADC_IE_FWMIE_MASK, 1);
+	writel(interrupt_en, adc->regs + IMX8QXP_ADR_ADC_IE);
+}
+
+static void imx8qxp_adc_disable(struct imx8qxp_adc *adc)
+{
+	u32 ctrl;
+
+	ctrl = readl(adc->regs + IMX8QXP_ADR_ADC_CTRL);
+	ctrl &= ~FIELD_PREP(IMX8QXP_ADC_CTRL_ADC_EN_MASK, 1);
+	writel(ctrl, adc->regs + IMX8QXP_ADR_ADC_CTRL);
+}
+
+static int imx8qxp_adc_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2, long mask)
+{
+	struct imx8qxp_adc *adc = iio_priv(indio_dev);
+	struct device *dev = adc->dev;
+
+	u32 ctrl;
+	long ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		pm_runtime_get_sync(dev);
+
+		mutex_lock(&adc->lock);
+		reinit_completion(&adc->completion);
+
+		imx8qxp_adc_reg_config(adc, chan->channel);
+
+		imx8qxp_adc_fifo_config(adc);
+
+		/* adc enable */
+		ctrl = readl(adc->regs + IMX8QXP_ADR_ADC_CTRL);
+		ctrl |= FIELD_PREP(IMX8QXP_ADC_CTRL_ADC_EN_MASK, 1);
+		writel(ctrl, adc->regs + IMX8QXP_ADR_ADC_CTRL);
+		/* adc start */
+		writel(1, adc->regs + IMX8QXP_ADR_ADC_SWTRIG);
+
+		ret = wait_for_completion_interruptible_timeout(&adc->completion,
+								IMX8QXP_ADC_TIMEOUT);
+
+		pm_runtime_mark_last_busy(dev);
+		pm_runtime_put_sync_autosuspend(dev);
+
+		if (ret == 0) {
+			mutex_unlock(&adc->lock);
+			return -ETIMEDOUT;
+		}
+		if (ret < 0) {
+			mutex_unlock(&adc->lock);
+			return ret;
+		}
+
+		*val = FIELD_GET(IMX8QXP_ADC_RESFIFO_VAL_MASK,
+				 readl(adc->regs + IMX8QXP_ADR_ADC_RESFIFO));
+
+		mutex_unlock(&adc->lock);
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		ret = regulator_get_voltage(adc->vref);
+		if (ret < 0)
+			return ret;
+		*val = ret / 1000;
+		*val2 = 12;
+		return IIO_VAL_FRACTIONAL_LOG2;
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = clk_get_rate(adc->clk) / 3;
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static irqreturn_t imx8qxp_adc_isr(int irq, void *dev_id)
+{
+	struct imx8qxp_adc *adc = dev_id;
+	u32 fifo_count;
+
+	fifo_count = FIELD_GET(IMX8QXP_ADC_FCTRL_FCOUNT_MASK,
+			       readl(adc->regs + IMX8QXP_ADR_ADC_FCTRL));
+
+	if (fifo_count)
+		complete(&adc->completion);
+
+	return IRQ_HANDLED;
+}
+
+static int imx8qxp_adc_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+				  unsigned int writeval, unsigned int *readval)
+{
+	struct imx8qxp_adc *adc = iio_priv(indio_dev);
+	struct device *dev = adc->dev;
+
+	if (!readval || reg % 4 || reg > IMX8QXP_ADR_ADC_TST)
+		return -EINVAL;
+
+	pm_runtime_get_sync(dev);
+
+	*readval = readl(adc->regs + reg);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_sync_autosuspend(dev);
+
+	return 0;
+}
+
+static const struct iio_info imx8qxp_adc_iio_info = {
+	.read_raw = &imx8qxp_adc_read_raw,
+	.debugfs_reg_access = &imx8qxp_adc_reg_access,
+};
+
+static int imx8qxp_adc_probe(struct platform_device *pdev)
+{
+	struct imx8qxp_adc *adc;
+	struct iio_dev *indio_dev;
+	struct device *dev = &pdev->dev;
+	int irq;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));
+	if (!indio_dev) {
+		dev_err(dev, "Failed allocating iio device\n");
+		return -ENOMEM;
+	}
+
+	adc = iio_priv(indio_dev);
+	adc->dev = dev;
+
+	mutex_init(&adc->lock);
+	adc->regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(adc->regs))
+		return PTR_ERR(adc->regs);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	adc->clk = devm_clk_get(dev, "per");
+	if (IS_ERR(adc->clk))
+		return dev_err_probe(dev, PTR_ERR(adc->clk), "Failed getting clock\n");
+
+	adc->ipg_clk = devm_clk_get(dev, "ipg");
+	if (IS_ERR(adc->ipg_clk))
+		return dev_err_probe(dev, PTR_ERR(adc->ipg_clk), "Failed getting clock\n");
+
+	adc->vref = devm_regulator_get(dev, "vref");
+	if (IS_ERR(adc->vref))
+		return dev_err_probe(dev, PTR_ERR(adc->vref), "Failed getting reference voltage\n");
+
+	ret = regulator_enable(adc->vref);
+	if (ret) {
+		dev_err(dev, "Can't enable adc reference top voltage\n");
+		return ret;
+	}
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	init_completion(&adc->completion);
+
+	indio_dev->name = ADC_DRIVER_NAME;
+	indio_dev->info = &imx8qxp_adc_iio_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = imx8qxp_adc_iio_channels;
+	indio_dev->num_channels = ARRAY_SIZE(imx8qxp_adc_iio_channels);
+
+	ret = clk_prepare_enable(adc->clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not prepare or enable the clock.\n");
+		goto error_regulator_disable;
+	}
+
+	ret = clk_prepare_enable(adc->ipg_clk);
+	if (ret) {
+		dev_err(&pdev->dev, "Could not prepare or enable the clock.\n");
+		goto error_adc_clk_disable;
+	}
+
+	ret = devm_request_irq(dev, irq, imx8qxp_adc_isr, 0, ADC_DRIVER_NAME, adc);
+	if (ret < 0) {
+		dev_err(dev, "Failed requesting irq, irq = %d\n", irq);
+		goto error_ipg_clk_disable;
+	}
+
+	imx8qxp_adc_reset(adc);
+
+	ret = iio_device_register(indio_dev);
+	if (ret) {
+		imx8qxp_adc_disable(adc);
+		dev_err(dev, "Couldn't register the device.\n");
+		goto error_ipg_clk_disable;
+	}
+
+	pm_runtime_set_active(dev);
+	pm_runtime_set_autosuspend_delay(dev, 50);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_enable(dev);
+
+	return 0;
+
+error_ipg_clk_disable:
+	clk_disable_unprepare(adc->ipg_clk);
+error_adc_clk_disable:
+	clk_disable_unprepare(adc->clk);
+error_regulator_disable:
+	regulator_disable(adc->vref);
+
+	return ret;
+}
+
+static int imx8qxp_adc_remove(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct imx8qxp_adc *adc = iio_priv(indio_dev);
+	struct device *dev = adc->dev;
+
+	pm_runtime_get_sync(dev);
+
+	iio_device_unregister(indio_dev);
+
+	imx8qxp_adc_disable(adc);
+
+	clk_disable_unprepare(adc->clk);
+	clk_disable_unprepare(adc->ipg_clk);
+	regulator_disable(adc->vref);
+
+	pm_runtime_disable(dev);
+	pm_runtime_put_noidle(dev);
+
+	return 0;
+}
+
+static int imx8qxp_adc_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct imx8qxp_adc *adc = iio_priv(indio_dev);
+
+	imx8qxp_adc_disable(adc);
+
+	clk_disable_unprepare(adc->clk);
+	clk_disable_unprepare(adc->ipg_clk);
+	regulator_disable(adc->vref);
+
+	return 0;
+}
+
+static int imx8qxp_adc_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct imx8qxp_adc *adc = iio_priv(indio_dev);
+	int ret;
+
+	ret = regulator_enable(adc->vref);
+	if (ret) {
+		dev_err(dev, "Can't enable adc reference top voltage, err = %d\n", ret);
+		return ret;
+	}
+
+	ret = clk_prepare_enable(adc->clk);
+	if (ret) {
+		dev_err(dev, "Could not prepare or enable clock.\n");
+		goto err_disable_reg;
+	}
+
+	ret = clk_prepare_enable(adc->ipg_clk);
+	if (ret) {
+		dev_err(dev, "Could not prepare or enable clock.\n");
+		goto err_unprepare_clk;
+	}
+
+	imx8qxp_adc_reset(adc);
+
+	return 0;
+
+err_unprepare_clk:
+	clk_disable_unprepare(adc->clk);
+
+err_disable_reg:
+	regulator_disable(adc->vref);
+
+	return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(imx8qxp_adc_pm_ops,
+				 imx8qxp_adc_runtime_suspend,
+				 imx8qxp_adc_runtime_resume, NULL);
+
+static const struct of_device_id imx8qxp_adc_match[] = {
+	{ .compatible = "nxp,imx8qxp-adc", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, imx8qxp_adc_match);
+
+static struct platform_driver imx8qxp_adc_driver = {
+	.probe		= imx8qxp_adc_probe,
+	.remove		= imx8qxp_adc_remove,
+	.driver		= {
+		.name	= ADC_DRIVER_NAME,
+		.of_match_table = imx8qxp_adc_match,
+		.pm	= pm_ptr(&imx8qxp_adc_pm_ops),
+	},
+};
+
+module_platform_driver(imx8qxp_adc_driver);
+
+MODULE_DESCRIPTION("i.MX8QuadXPlus ADC driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/ina2xx-adc.c b/drivers/iio/adc/ina2xx-adc.c
index bdd7cba6f6b0..910e7e965fc4 100644
--- a/drivers/iio/adc/ina2xx-adc.c
+++ b/drivers/iio/adc/ina2xx-adc.c
@@ -146,6 +146,11 @@ struct ina2xx_chip_info {
 	int range_vbus; /* Bus voltage maximum in V */
 	int pga_gain_vshunt; /* Shunt voltage PGA gain */
 	bool allow_async_readout;
+	/* data buffer needs space for channel data and timestamp */
+	struct {
+		u16 chan[4];
+		u64 ts __aligned(8);
+	} scan;
 };
 
 static const struct ina2xx_config ina2xx_config[] = {
@@ -273,7 +278,7 @@ static int ina2xx_read_raw(struct iio_dev *indio_dev,
  * Available averaging rates for ina226. The indices correspond with
  * the bit values expected by the chip (according to the ina226 datasheet,
  * table 3 AVG bit settings, found at
- * http://www.ti.com/lit/ds/symlink/ina226.pdf.
+ * https://www.ti.com/lit/ds/symlink/ina226.pdf.
  */
 static const int ina226_avg_tab[] = { 1, 4, 16, 64, 128, 256, 512, 1024 };
 
@@ -534,7 +539,7 @@ static ssize_t ina2xx_allow_async_readout_show(struct device *dev,
 {
 	struct ina2xx_chip_info *chip = iio_priv(dev_to_iio_dev(dev));
 
-	return sprintf(buf, "%d\n", chip->allow_async_readout);
+	return sysfs_emit(buf, "%d\n", chip->allow_async_readout);
 }
 
 static ssize_t ina2xx_allow_async_readout_store(struct device *dev,
@@ -545,7 +550,7 @@ static ssize_t ina2xx_allow_async_readout_store(struct device *dev,
 	bool val;
 	int ret;
 
-	ret = strtobool((const char *) buf, &val);
+	ret = kstrtobool(buf, &val);
 	if (ret)
 		return ret;
 
@@ -738,8 +743,6 @@ static int ina2xx_conversion_ready(struct iio_dev *indio_dev)
 static int ina2xx_work_buffer(struct iio_dev *indio_dev)
 {
 	struct ina2xx_chip_info *chip = iio_priv(indio_dev);
-	/* data buffer needs space for channel data and timestap */
-	unsigned short data[4 + sizeof(s64)/sizeof(short)];
 	int bit, ret, i = 0;
 	s64 time;
 
@@ -758,10 +761,10 @@ static int ina2xx_work_buffer(struct iio_dev *indio_dev)
 		if (ret < 0)
 			return ret;
 
-		data[i++] = val;
+		chip->scan.chan[i++] = val;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data, time);
+	iio_push_to_buffers_with_timestamp(indio_dev, &chip->scan, time);
 
 	return 0;
 };
@@ -839,14 +842,13 @@ static int ina2xx_buffer_enable(struct iio_dev *indio_dev)
 	dev_dbg(&indio_dev->dev, "Async readout mode: %d\n",
 		chip->allow_async_readout);
 
-	task = kthread_create(ina2xx_capture_thread, (void *)indio_dev,
-			      "%s:%d-%uus", indio_dev->name, indio_dev->id,
-			      sampling_us);
+	task = kthread_run(ina2xx_capture_thread, (void *)indio_dev,
+			   "%s:%d-%uus", indio_dev->name,
+			   iio_device_id(indio_dev),
+			   sampling_us);
 	if (IS_ERR(task))
 		return PTR_ERR(task);
 
-	get_task_struct(task);
-	wake_up_process(task);
 	chip->task = task;
 
 	return 0;
@@ -858,7 +860,6 @@ static int ina2xx_buffer_disable(struct iio_dev *indio_dev)
 
 	if (chip->task) {
 		kthread_stop(chip->task);
-		put_task_struct(chip->task);
 		chip->task = NULL;
 	}
 
@@ -950,7 +951,6 @@ static int ina2xx_probe(struct i2c_client *client,
 {
 	struct ina2xx_chip_info *chip;
 	struct iio_dev *indio_dev;
-	struct iio_buffer *buffer;
 	unsigned int val;
 	enum ina2xx_ids type;
 	int ret;
@@ -971,7 +971,7 @@ static int ina2xx_probe(struct i2c_client *client,
 	}
 
 	if (client->dev.of_node)
-		type = (enum ina2xx_ids)of_device_get_match_data(&client->dev);
+		type = (uintptr_t)of_device_get_match_data(&client->dev);
 	else
 		type = id->driver_data;
 	chip->config = &ina2xx_config[type];
@@ -1014,9 +1014,7 @@ static int ina2xx_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
+	indio_dev->modes = INDIO_DIRECT_MODE;
 	if (id->driver_data == ina226) {
 		indio_dev->channels = ina226_channels;
 		indio_dev->num_channels = ARRAY_SIZE(ina226_channels);
@@ -1027,27 +1025,29 @@ static int ina2xx_probe(struct i2c_client *client,
 		indio_dev->info = &ina219_info;
 	}
 	indio_dev->name = id->name;
-	indio_dev->setup_ops = &ina2xx_setup_ops;
 
-	buffer = devm_iio_kfifo_allocate(&indio_dev->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
+	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
+					  &ina2xx_setup_ops);
+	if (ret)
+		return ret;
 
 	return iio_device_register(indio_dev);
 }
 
-static int ina2xx_remove(struct i2c_client *client)
+static void ina2xx_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ina2xx_chip_info *chip = iio_priv(indio_dev);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 
 	/* Powerdown */
-	return regmap_update_bits(chip->regmap, INA2XX_CONFIG,
-				  INA2XX_MODE_MASK, 0);
+	ret = regmap_update_bits(chip->regmap, INA2XX_CONFIG,
+				 INA2XX_MODE_MASK, 0);
+	if (ret)
+		dev_warn(&client->dev, "Failed to power down device (%pe)\n",
+			 ERR_PTR(ret));
 }
 
 static const struct i2c_device_id ina2xx_id[] = {
diff --git a/drivers/iio/adc/ingenic-adc.c b/drivers/iio/adc/ingenic-adc.c
index 39c0a609fc94..a7325dbbb99a 100644
--- a/drivers/iio/adc/ingenic-adc.c
+++ b/drivers/iio/adc/ingenic-adc.c
@@ -8,31 +8,64 @@
 
 #include <dt-bindings/iio/adc/ingenic,adc.h>
 #include <linux/clk.h>
+#include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
+#include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/iopoll.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 
 #define JZ_ADC_REG_ENABLE		0x00
 #define JZ_ADC_REG_CFG			0x04
 #define JZ_ADC_REG_CTRL			0x08
 #define JZ_ADC_REG_STATUS		0x0c
+#define JZ_ADC_REG_ADSAME		0x10
+#define JZ_ADC_REG_ADWAIT		0x14
 #define JZ_ADC_REG_ADTCH		0x18
 #define JZ_ADC_REG_ADBDAT		0x1c
 #define JZ_ADC_REG_ADSDAT		0x20
+#define JZ_ADC_REG_ADCMD		0x24
 #define JZ_ADC_REG_ADCLK		0x28
 
 #define JZ_ADC_REG_ENABLE_PD		BIT(7)
 #define JZ_ADC_REG_CFG_AUX_MD		(BIT(0) | BIT(1))
 #define JZ_ADC_REG_CFG_BAT_MD		BIT(4)
+#define JZ_ADC_REG_CFG_SAMPLE_NUM(n)	((n) << 10)
+#define JZ_ADC_REG_CFG_PULL_UP(n)	((n) << 16)
+#define JZ_ADC_REG_CFG_CMD_SEL		BIT(22)
+#define JZ_ADC_REG_CFG_VBAT_SEL		BIT(30)
+#define JZ_ADC_REG_CFG_TOUCH_OPS_MASK	(BIT(31) | GENMASK(23, 10))
 #define JZ_ADC_REG_ADCLK_CLKDIV_LSB	0
 #define JZ4725B_ADC_REG_ADCLK_CLKDIV10US_LSB	16
 #define JZ4770_ADC_REG_ADCLK_CLKDIV10US_LSB	8
 #define JZ4770_ADC_REG_ADCLK_CLKDIVMS_LSB	16
 
+#define JZ_ADC_REG_ADCMD_YNADC		BIT(7)
+#define JZ_ADC_REG_ADCMD_YPADC		BIT(8)
+#define JZ_ADC_REG_ADCMD_XNADC		BIT(9)
+#define JZ_ADC_REG_ADCMD_XPADC		BIT(10)
+#define JZ_ADC_REG_ADCMD_VREFPYP	BIT(11)
+#define JZ_ADC_REG_ADCMD_VREFPXP	BIT(12)
+#define JZ_ADC_REG_ADCMD_VREFPXN	BIT(13)
+#define JZ_ADC_REG_ADCMD_VREFPAUX	BIT(14)
+#define JZ_ADC_REG_ADCMD_VREFPVDD33	BIT(15)
+#define JZ_ADC_REG_ADCMD_VREFNYN	BIT(16)
+#define JZ_ADC_REG_ADCMD_VREFNXP	BIT(17)
+#define JZ_ADC_REG_ADCMD_VREFNXN	BIT(18)
+#define JZ_ADC_REG_ADCMD_VREFAUX	BIT(19)
+#define JZ_ADC_REG_ADCMD_YNGRU		BIT(20)
+#define JZ_ADC_REG_ADCMD_XNGRU		BIT(21)
+#define JZ_ADC_REG_ADCMD_XPGRU		BIT(22)
+#define JZ_ADC_REG_ADCMD_YPSUP		BIT(23)
+#define JZ_ADC_REG_ADCMD_XNSUP		BIT(24)
+#define JZ_ADC_REG_ADCMD_XPSUP		BIT(25)
+
 #define JZ_ADC_AUX_VREF				3300
 #define JZ_ADC_AUX_VREF_BITS			12
 #define JZ_ADC_BATTERY_LOW_VREF			2500
@@ -41,9 +74,18 @@
 #define JZ4725B_ADC_BATTERY_HIGH_VREF_BITS	10
 #define JZ4740_ADC_BATTERY_HIGH_VREF		(7500 * 0.986)
 #define JZ4740_ADC_BATTERY_HIGH_VREF_BITS	12
-#define JZ4770_ADC_BATTERY_VREF			6600
+#define JZ4760_ADC_BATTERY_VREF			2500
+#define JZ4770_ADC_BATTERY_VREF			1200
 #define JZ4770_ADC_BATTERY_VREF_BITS		12
 
+#define JZ_ADC_IRQ_AUX			BIT(0)
+#define JZ_ADC_IRQ_BATTERY		BIT(1)
+#define JZ_ADC_IRQ_TOUCH		BIT(2)
+#define JZ_ADC_IRQ_PEN_DOWN		BIT(3)
+#define JZ_ADC_IRQ_PEN_UP		BIT(4)
+#define JZ_ADC_IRQ_PEN_DOWN_SLEEP	BIT(5)
+#define JZ_ADC_IRQ_SLEEP		BIT(7)
+
 struct ingenic_adc;
 
 struct ingenic_adc_soc_data {
@@ -54,7 +96,9 @@ struct ingenic_adc_soc_data {
 	const int *battery_scale_avail;
 	size_t battery_scale_avail_size;
 	unsigned int battery_vref_mode: 1;
-	unsigned int has_aux2: 1;
+	unsigned int has_aux_md: 1;
+	const struct iio_chan_spec *channels;
+	unsigned int num_channels;
 	int (*init_clk_div)(struct device *dev, struct ingenic_adc *adc);
 };
 
@@ -67,13 +111,67 @@ struct ingenic_adc {
 	bool low_vref_mode;
 };
 
+static void ingenic_adc_set_adcmd(struct iio_dev *iio_dev, unsigned long mask)
+{
+	struct ingenic_adc *adc = iio_priv(iio_dev);
+
+	mutex_lock(&adc->lock);
+
+	/* Init ADCMD */
+	readl(adc->base + JZ_ADC_REG_ADCMD);
+
+	if (mask & 0x3) {
+		/* Second channel (INGENIC_ADC_TOUCH_YP): sample YP vs. GND */
+		writel(JZ_ADC_REG_ADCMD_XNGRU
+		       | JZ_ADC_REG_ADCMD_VREFNXN | JZ_ADC_REG_ADCMD_VREFPVDD33
+		       | JZ_ADC_REG_ADCMD_YPADC,
+		       adc->base + JZ_ADC_REG_ADCMD);
+
+		/* First channel (INGENIC_ADC_TOUCH_XP): sample XP vs. GND */
+		writel(JZ_ADC_REG_ADCMD_YNGRU
+		       | JZ_ADC_REG_ADCMD_VREFNYN | JZ_ADC_REG_ADCMD_VREFPVDD33
+		       | JZ_ADC_REG_ADCMD_XPADC,
+		       adc->base + JZ_ADC_REG_ADCMD);
+	}
+
+	if (mask & 0xc) {
+		/* Fourth channel (INGENIC_ADC_TOUCH_YN): sample YN vs. GND */
+		writel(JZ_ADC_REG_ADCMD_XNGRU
+		       | JZ_ADC_REG_ADCMD_VREFNXN | JZ_ADC_REG_ADCMD_VREFPVDD33
+		       | JZ_ADC_REG_ADCMD_YNADC,
+		       adc->base + JZ_ADC_REG_ADCMD);
+
+		/* Third channel (INGENIC_ADC_TOUCH_XN): sample XN vs. GND */
+		writel(JZ_ADC_REG_ADCMD_YNGRU
+		       | JZ_ADC_REG_ADCMD_VREFNYN | JZ_ADC_REG_ADCMD_VREFPVDD33
+		       | JZ_ADC_REG_ADCMD_XNADC,
+		       adc->base + JZ_ADC_REG_ADCMD);
+	}
+
+	if (mask & 0x30) {
+		/* Sixth channel (INGENIC_ADC_TOUCH_YD): sample YP vs. YN */
+		writel(JZ_ADC_REG_ADCMD_VREFNYN | JZ_ADC_REG_ADCMD_VREFPVDD33
+		       | JZ_ADC_REG_ADCMD_YPADC,
+		       adc->base + JZ_ADC_REG_ADCMD);
+
+		/* Fifth channel (INGENIC_ADC_TOUCH_XD): sample XP vs. XN */
+		writel(JZ_ADC_REG_ADCMD_VREFNXN | JZ_ADC_REG_ADCMD_VREFPVDD33
+		       | JZ_ADC_REG_ADCMD_XPADC,
+		       adc->base + JZ_ADC_REG_ADCMD);
+	}
+
+	/* We're done */
+	writel(0, adc->base + JZ_ADC_REG_ADCMD);
+
+	mutex_unlock(&adc->lock);
+}
+
 static void ingenic_adc_set_config(struct ingenic_adc *adc,
 				   uint32_t mask,
 				   uint32_t val)
 {
 	uint32_t cfg;
 
-	clk_enable(adc->clk);
 	mutex_lock(&adc->lock);
 
 	cfg = readl(adc->base + JZ_ADC_REG_CFG) & ~mask;
@@ -81,16 +179,14 @@ static void ingenic_adc_set_config(struct ingenic_adc *adc,
 	writel(cfg, adc->base + JZ_ADC_REG_CFG);
 
 	mutex_unlock(&adc->lock);
-	clk_disable(adc->clk);
 }
 
-static void ingenic_adc_enable(struct ingenic_adc *adc,
-			       int engine,
-			       bool enabled)
+static void ingenic_adc_enable_unlocked(struct ingenic_adc *adc,
+					int engine,
+					bool enabled)
 {
 	u8 val;
 
-	mutex_lock(&adc->lock);
 	val = readb(adc->base + JZ_ADC_REG_ENABLE);
 
 	if (enabled)
@@ -99,20 +195,41 @@ static void ingenic_adc_enable(struct ingenic_adc *adc,
 		val &= ~BIT(engine);
 
 	writeb(val, adc->base + JZ_ADC_REG_ENABLE);
+}
+
+static void ingenic_adc_enable(struct ingenic_adc *adc,
+			       int engine,
+			       bool enabled)
+{
+	mutex_lock(&adc->lock);
+	ingenic_adc_enable_unlocked(adc, engine, enabled);
 	mutex_unlock(&adc->lock);
 }
 
 static int ingenic_adc_capture(struct ingenic_adc *adc,
 			       int engine)
 {
+	u32 cfg;
 	u8 val;
 	int ret;
 
-	ingenic_adc_enable(adc, engine, true);
+	/*
+	 * Disable CMD_SEL temporarily, because it causes wrong VBAT readings,
+	 * probably due to the switch of VREF. We must keep the lock here to
+	 * avoid races with the buffer enable/disable functions.
+	 */
+	mutex_lock(&adc->lock);
+	cfg = readl(adc->base + JZ_ADC_REG_CFG);
+	writel(cfg & ~JZ_ADC_REG_CFG_CMD_SEL, adc->base + JZ_ADC_REG_CFG);
+
+	ingenic_adc_enable_unlocked(adc, engine, true);
 	ret = readb_poll_timeout(adc->base + JZ_ADC_REG_ENABLE, val,
 				 !(val & BIT(engine)), 250, 1000);
 	if (ret)
-		ingenic_adc_enable(adc, engine, false);
+		ingenic_adc_enable_unlocked(adc, engine, false);
+
+	writel(cfg, adc->base + JZ_ADC_REG_CFG);
+	mutex_unlock(&adc->lock);
 
 	return ret;
 }
@@ -124,6 +241,8 @@ static int ingenic_adc_write_raw(struct iio_dev *iio_dev,
 				 long m)
 {
 	struct ingenic_adc *adc = iio_priv(iio_dev);
+	struct device *dev = iio_dev->dev.parent;
+	int ret;
 
 	switch (m) {
 	case IIO_CHAN_INFO_SCALE:
@@ -131,6 +250,14 @@ static int ingenic_adc_write_raw(struct iio_dev *iio_dev,
 		case INGENIC_ADC_BATTERY:
 			if (!adc->soc_data->battery_vref_mode)
 				return -EINVAL;
+
+			ret = clk_enable(adc->clk);
+			if (ret) {
+				dev_err(dev, "Failed to enable clock: %d\n",
+					ret);
+				return ret;
+			}
+
 			if (val > JZ_ADC_BATTERY_LOW_VREF) {
 				ingenic_adc_set_config(adc,
 						       JZ_ADC_REG_CFG_BAT_MD,
@@ -142,6 +269,9 @@ static int ingenic_adc_write_raw(struct iio_dev *iio_dev,
 						       JZ_ADC_REG_CFG_BAT_MD);
 				adc->low_vref_mode = true;
 			}
+
+			clk_disable(adc->clk);
+
 			return 0;
 		default:
 			return -EINVAL;
@@ -169,6 +299,10 @@ static const int jz4740_adc_battery_scale_avail[] = {
 	JZ_ADC_BATTERY_LOW_VREF, JZ_ADC_BATTERY_LOW_VREF_BITS,
 };
 
+static const int jz4760_adc_battery_scale_avail[] = {
+	JZ4760_ADC_BATTERY_VREF, JZ4770_ADC_BATTERY_VREF_BITS,
+};
+
 static const int jz4770_adc_battery_raw_avail[] = {
 	0, 1, (1 << JZ4770_ADC_BATTERY_VREF_BITS) - 1,
 };
@@ -251,6 +385,168 @@ static int jz4770_adc_init_clk_div(struct device *dev, struct ingenic_adc *adc)
 	return 0;
 }
 
+static const struct iio_chan_spec jz4740_channels[] = {
+	{
+		.extend_name = "aux",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_AUX,
+		.scan_index = -1,
+	},
+	{
+		.extend_name = "battery",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) |
+						BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_BATTERY,
+		.scan_index = -1,
+	},
+};
+
+static const struct iio_chan_spec jz4760_channels[] = {
+	{
+		.extend_name = "aux",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_AUX0,
+		.scan_index = -1,
+	},
+	{
+		.extend_name = "aux1",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_AUX,
+		.scan_index = -1,
+	},
+	{
+		.extend_name = "aux2",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_AUX2,
+		.scan_index = -1,
+	},
+	{
+		.extend_name = "battery",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) |
+						BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_BATTERY,
+		.scan_index = -1,
+	},
+};
+
+static const struct iio_chan_spec jz4770_channels[] = {
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = INGENIC_ADC_TOUCH_XP,
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 12,
+			.storagebits = 16,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = INGENIC_ADC_TOUCH_YP,
+		.scan_index = 1,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 12,
+			.storagebits = 16,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = INGENIC_ADC_TOUCH_XN,
+		.scan_index = 2,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 12,
+			.storagebits = 16,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = INGENIC_ADC_TOUCH_YN,
+		.scan_index = 3,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 12,
+			.storagebits = 16,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = INGENIC_ADC_TOUCH_XD,
+		.scan_index = 4,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 12,
+			.storagebits = 16,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = INGENIC_ADC_TOUCH_YD,
+		.scan_index = 5,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 12,
+			.storagebits = 16,
+		},
+	},
+	{
+		.extend_name = "aux",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_AUX,
+		.scan_index = -1,
+	},
+	{
+		.extend_name = "battery",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) |
+						BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_BATTERY,
+		.scan_index = -1,
+	},
+	{
+		.extend_name = "aux2",
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.indexed = 1,
+		.channel = INGENIC_ADC_AUX2,
+		.scan_index = -1,
+	},
+};
+
 static const struct ingenic_adc_soc_data jz4725b_adc_soc_data = {
 	.battery_high_vref = JZ4725B_ADC_BATTERY_HIGH_VREF,
 	.battery_high_vref_bits = JZ4725B_ADC_BATTERY_HIGH_VREF_BITS,
@@ -259,7 +555,9 @@ static const struct ingenic_adc_soc_data jz4725b_adc_soc_data = {
 	.battery_scale_avail = jz4725b_adc_battery_scale_avail,
 	.battery_scale_avail_size = ARRAY_SIZE(jz4725b_adc_battery_scale_avail),
 	.battery_vref_mode = true,
-	.has_aux2 = false,
+	.has_aux_md = false,
+	.channels = jz4740_channels,
+	.num_channels = ARRAY_SIZE(jz4740_channels),
 	.init_clk_div = jz4725b_adc_init_clk_div,
 };
 
@@ -271,10 +569,26 @@ static const struct ingenic_adc_soc_data jz4740_adc_soc_data = {
 	.battery_scale_avail = jz4740_adc_battery_scale_avail,
 	.battery_scale_avail_size = ARRAY_SIZE(jz4740_adc_battery_scale_avail),
 	.battery_vref_mode = true,
-	.has_aux2 = false,
+	.has_aux_md = false,
+	.channels = jz4740_channels,
+	.num_channels = ARRAY_SIZE(jz4740_channels),
 	.init_clk_div = NULL, /* no ADCLK register on JZ4740 */
 };
 
+static const struct ingenic_adc_soc_data jz4760_adc_soc_data = {
+	.battery_high_vref = JZ4760_ADC_BATTERY_VREF,
+	.battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS,
+	.battery_raw_avail = jz4770_adc_battery_raw_avail,
+	.battery_raw_avail_size = ARRAY_SIZE(jz4770_adc_battery_raw_avail),
+	.battery_scale_avail = jz4760_adc_battery_scale_avail,
+	.battery_scale_avail_size = ARRAY_SIZE(jz4760_adc_battery_scale_avail),
+	.battery_vref_mode = false,
+	.has_aux_md = true,
+	.channels = jz4760_channels,
+	.num_channels = ARRAY_SIZE(jz4760_channels),
+	.init_clk_div = jz4770_adc_init_clk_div,
+};
+
 static const struct ingenic_adc_soc_data jz4770_adc_soc_data = {
 	.battery_high_vref = JZ4770_ADC_BATTERY_VREF,
 	.battery_high_vref_bits = JZ4770_ADC_BATTERY_VREF_BITS,
@@ -283,7 +597,9 @@ static const struct ingenic_adc_soc_data jz4770_adc_soc_data = {
 	.battery_scale_avail = jz4770_adc_battery_scale_avail,
 	.battery_scale_avail_size = ARRAY_SIZE(jz4770_adc_battery_scale_avail),
 	.battery_vref_mode = false,
-	.has_aux2 = true,
+	.has_aux_md = true,
+	.channels = jz4770_channels,
+	.num_channels = ARRAY_SIZE(jz4770_channels),
 	.init_clk_div = jz4770_adc_init_clk_div,
 };
 
@@ -309,28 +625,47 @@ static int ingenic_adc_read_avail(struct iio_dev *iio_dev,
 		return IIO_AVAIL_LIST;
 	default:
 		return -EINVAL;
-	};
+	}
 }
 
-static int ingenic_adc_read_chan_info_raw(struct ingenic_adc *adc,
+static int ingenic_adc_read_chan_info_raw(struct iio_dev *iio_dev,
 					  struct iio_chan_spec const *chan,
 					  int *val)
 {
-	int bit, ret, engine = (chan->channel == INGENIC_ADC_BATTERY);
+	int cmd, ret, engine = (chan->channel == INGENIC_ADC_BATTERY);
+	struct ingenic_adc *adc = iio_priv(iio_dev);
+
+	ret = clk_enable(adc->clk);
+	if (ret) {
+		dev_err(iio_dev->dev.parent, "Failed to enable clock: %d\n",
+			ret);
+		return ret;
+	}
 
-	/* We cannot sample AUX/AUX2 in parallel. */
+	/* We cannot sample the aux channels in parallel. */
 	mutex_lock(&adc->aux_lock);
-	if (adc->soc_data->has_aux2 && engine == 0) {
-		bit = BIT(chan->channel == INGENIC_ADC_AUX2);
-		ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, bit);
+	if (adc->soc_data->has_aux_md && engine == 0) {
+		switch (chan->channel) {
+		case INGENIC_ADC_AUX0:
+			cmd = 0;
+			break;
+		case INGENIC_ADC_AUX:
+			cmd = 1;
+			break;
+		case INGENIC_ADC_AUX2:
+			cmd = 2;
+			break;
+		}
+
+		ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_AUX_MD, cmd);
 	}
 
-	clk_enable(adc->clk);
 	ret = ingenic_adc_capture(adc, engine);
 	if (ret)
 		goto out;
 
 	switch (chan->channel) {
+	case INGENIC_ADC_AUX0:
 	case INGENIC_ADC_AUX:
 	case INGENIC_ADC_AUX2:
 		*val = readw(adc->base + JZ_ADC_REG_ADSDAT);
@@ -342,8 +677,8 @@ static int ingenic_adc_read_chan_info_raw(struct ingenic_adc *adc,
 
 	ret = IIO_VAL_INT;
 out:
-	clk_disable(adc->clk);
 	mutex_unlock(&adc->aux_lock);
+	clk_disable(adc->clk);
 
 	return ret;
 }
@@ -358,9 +693,10 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev,
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		return ingenic_adc_read_chan_info_raw(adc, chan, val);
+		return ingenic_adc_read_chan_info_raw(iio_dev, chan, val);
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->channel) {
+		case INGENIC_ADC_AUX0:
 		case INGENIC_ADC_AUX:
 		case INGENIC_ADC_AUX2:
 			*val = JZ_ADC_AUX_VREF;
@@ -383,53 +719,111 @@ static int ingenic_adc_read_raw(struct iio_dev *iio_dev,
 	}
 }
 
-static void ingenic_adc_clk_cleanup(void *data)
+static int ingenic_adc_fwnode_xlate(struct iio_dev *iio_dev,
+				    const struct fwnode_reference_args *iiospec)
 {
-	clk_unprepare(data);
+	int i;
+
+	if (!iiospec->nargs)
+		return -EINVAL;
+
+	for (i = 0; i < iio_dev->num_channels; ++i)
+		if (iio_dev->channels[i].channel == iiospec->args[0])
+			return i;
+
+	return -EINVAL;
 }
 
 static const struct iio_info ingenic_adc_info = {
 	.write_raw = ingenic_adc_write_raw,
 	.read_raw = ingenic_adc_read_raw,
 	.read_avail = ingenic_adc_read_avail,
+	.fwnode_xlate = ingenic_adc_fwnode_xlate,
 };
 
-static const struct iio_chan_spec ingenic_channels[] = {
-	{
-		.extend_name = "aux",
-		.type = IIO_VOLTAGE,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-				      BIT(IIO_CHAN_INFO_SCALE),
-		.indexed = 1,
-		.channel = INGENIC_ADC_AUX,
-	},
-	{
-		.extend_name = "battery",
-		.type = IIO_VOLTAGE,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-				      BIT(IIO_CHAN_INFO_SCALE),
-		.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW) |
-						BIT(IIO_CHAN_INFO_SCALE),
-		.indexed = 1,
-		.channel = INGENIC_ADC_BATTERY,
-	},
-	{ /* Must always be last in the array. */
-		.extend_name = "aux2",
-		.type = IIO_VOLTAGE,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-				      BIT(IIO_CHAN_INFO_SCALE),
-		.indexed = 1,
-		.channel = INGENIC_ADC_AUX2,
-	},
+static int ingenic_adc_buffer_enable(struct iio_dev *iio_dev)
+{
+	struct ingenic_adc *adc = iio_priv(iio_dev);
+	int ret;
+
+	ret = clk_enable(adc->clk);
+	if (ret) {
+		dev_err(iio_dev->dev.parent, "Failed to enable clock: %d\n",
+			ret);
+		return ret;
+	}
+
+	/* It takes significant time for the touchscreen hw to stabilize. */
+	msleep(50);
+	ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_TOUCH_OPS_MASK,
+			       JZ_ADC_REG_CFG_SAMPLE_NUM(4) |
+			       JZ_ADC_REG_CFG_PULL_UP(4));
+
+	writew(80, adc->base + JZ_ADC_REG_ADWAIT);
+	writew(2, adc->base + JZ_ADC_REG_ADSAME);
+	writeb((u8)~JZ_ADC_IRQ_TOUCH, adc->base + JZ_ADC_REG_CTRL);
+	writel(0, adc->base + JZ_ADC_REG_ADTCH);
+
+	ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_CMD_SEL,
+			       JZ_ADC_REG_CFG_CMD_SEL);
+	ingenic_adc_set_adcmd(iio_dev, iio_dev->active_scan_mask[0]);
+
+	ingenic_adc_enable(adc, 2, true);
+
+	return 0;
+}
+
+static int ingenic_adc_buffer_disable(struct iio_dev *iio_dev)
+{
+	struct ingenic_adc *adc = iio_priv(iio_dev);
+
+	ingenic_adc_enable(adc, 2, false);
+
+	ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_CMD_SEL, 0);
+
+	writeb(0xff, adc->base + JZ_ADC_REG_CTRL);
+	writeb(0xff, adc->base + JZ_ADC_REG_STATUS);
+	ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_TOUCH_OPS_MASK, 0);
+	writew(0, adc->base + JZ_ADC_REG_ADSAME);
+	writew(0, adc->base + JZ_ADC_REG_ADWAIT);
+	clk_disable(adc->clk);
+
+	return 0;
+}
+
+static const struct iio_buffer_setup_ops ingenic_buffer_setup_ops = {
+	.postenable = &ingenic_adc_buffer_enable,
+	.predisable = &ingenic_adc_buffer_disable
 };
 
+static irqreturn_t ingenic_adc_irq(int irq, void *data)
+{
+	struct iio_dev *iio_dev = data;
+	struct ingenic_adc *adc = iio_priv(iio_dev);
+	unsigned long mask = iio_dev->active_scan_mask[0];
+	unsigned int i;
+	u32 tdat[3];
+
+	for (i = 0; i < ARRAY_SIZE(tdat); mask >>= 2, i++) {
+		if (mask & 0x3)
+			tdat[i] = readl(adc->base + JZ_ADC_REG_ADTCH);
+		else
+			tdat[i] = 0;
+	}
+
+	iio_push_to_buffers(iio_dev, tdat);
+	writeb(JZ_ADC_IRQ_TOUCH, adc->base + JZ_ADC_REG_STATUS);
+
+	return IRQ_HANDLED;
+}
+
 static int ingenic_adc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct iio_dev *iio_dev;
 	struct ingenic_adc *adc;
 	const struct ingenic_adc_soc_data *soc_data;
-	int ret;
+	int irq, ret;
 
 	soc_data = device_get_match_data(dev);
 	if (!soc_data)
@@ -444,17 +838,28 @@ static int ingenic_adc_probe(struct platform_device *pdev)
 	mutex_init(&adc->aux_lock);
 	adc->soc_data = soc_data;
 
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ret = devm_request_irq(dev, irq, ingenic_adc_irq, 0,
+			       dev_name(dev), iio_dev);
+	if (ret < 0) {
+		dev_err(dev, "Failed to request irq: %d\n", ret);
+		return ret;
+	}
+
 	adc->base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(adc->base))
 		return PTR_ERR(adc->base);
 
-	adc->clk = devm_clk_get(dev, "adc");
+	adc->clk = devm_clk_get_prepared(dev, "adc");
 	if (IS_ERR(adc->clk)) {
 		dev_err(dev, "Unable to get clock\n");
 		return PTR_ERR(adc->clk);
 	}
 
-	ret = clk_prepare_enable(adc->clk);
+	ret = clk_enable(adc->clk);
 	if (ret) {
 		dev_err(dev, "Failed to enable clock\n");
 		return ret;
@@ -472,23 +877,22 @@ static int ingenic_adc_probe(struct platform_device *pdev)
 	/* Put hardware in a known passive state. */
 	writeb(0x00, adc->base + JZ_ADC_REG_ENABLE);
 	writeb(0xff, adc->base + JZ_ADC_REG_CTRL);
+
+	/* JZ4760B specific */
+	if (device_property_present(dev, "ingenic,use-internal-divider"))
+		ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_VBAT_SEL,
+					    JZ_ADC_REG_CFG_VBAT_SEL);
+	else
+		ingenic_adc_set_config(adc, JZ_ADC_REG_CFG_VBAT_SEL, 0);
+
 	usleep_range(2000, 3000); /* Must wait at least 2ms. */
 	clk_disable(adc->clk);
 
-	ret = devm_add_action_or_reset(dev, ingenic_adc_clk_cleanup, adc->clk);
-	if (ret) {
-		dev_err(dev, "Unable to add action\n");
-		return ret;
-	}
-
-	iio_dev->dev.parent = dev;
 	iio_dev->name = "jz-adc";
-	iio_dev->modes = INDIO_DIRECT_MODE;
-	iio_dev->channels = ingenic_channels;
-	iio_dev->num_channels = ARRAY_SIZE(ingenic_channels);
-	/* Remove AUX2 from the list of supported channels. */
-	if (!adc->soc_data->has_aux2)
-		iio_dev->num_channels -= 1;
+	iio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_SOFTWARE;
+	iio_dev->setup_ops = &ingenic_buffer_setup_ops;
+	iio_dev->channels = soc_data->channels;
+	iio_dev->num_channels = soc_data->num_channels;
 	iio_dev->info = &ingenic_adc_info;
 
 	ret = devm_iio_device_register(dev, iio_dev);
@@ -498,20 +902,20 @@ static int ingenic_adc_probe(struct platform_device *pdev)
 	return ret;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id ingenic_adc_of_match[] = {
 	{ .compatible = "ingenic,jz4725b-adc", .data = &jz4725b_adc_soc_data, },
 	{ .compatible = "ingenic,jz4740-adc", .data = &jz4740_adc_soc_data, },
+	{ .compatible = "ingenic,jz4760-adc", .data = &jz4760_adc_soc_data, },
+	{ .compatible = "ingenic,jz4760b-adc", .data = &jz4760_adc_soc_data, },
 	{ .compatible = "ingenic,jz4770-adc", .data = &jz4770_adc_soc_data, },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, ingenic_adc_of_match);
-#endif
 
 static struct platform_driver ingenic_adc_driver = {
 	.driver = {
 		.name = "ingenic-adc",
-		.of_match_table = of_match_ptr(ingenic_adc_of_match),
+		.of_match_table = ingenic_adc_of_match,
 	},
 	.probe = ingenic_adc_probe,
 };
diff --git a/drivers/iio/adc/intel_mrfld_adc.c b/drivers/iio/adc/intel_mrfld_adc.c
index c35a1beb817c..7263ad76124d 100644
--- a/drivers/iio/adc/intel_mrfld_adc.c
+++ b/drivers/iio/adc/intel_mrfld_adc.c
@@ -15,6 +15,7 @@
 #include <linux/interrupt.h>
 #include <linux/mfd/intel_soc_pmic.h>
 #include <linux/mfd/intel_soc_pmic_mrfld.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/platform_device.h>
@@ -75,7 +76,7 @@ static int mrfld_adc_single_conv(struct iio_dev *indio_dev,
 	struct regmap *regmap = adc->regmap;
 	unsigned int req;
 	long timeout;
-	u8 buf[2];
+	__be16 value;
 	int ret;
 
 	reinit_completion(&adc->completion);
@@ -105,11 +106,11 @@ static int mrfld_adc_single_conv(struct iio_dev *indio_dev,
 		goto done;
 	}
 
-	ret = regmap_bulk_read(regmap, chan->address, buf, 2);
+	ret = regmap_bulk_read(regmap, chan->address, &value, sizeof(value));
 	if (ret)
 		goto done;
 
-	*result = get_unaligned_be16(buf);
+	*result = be16_to_cpu(value);
 	ret = IIO_VAL_INT;
 
 done:
@@ -205,9 +206,6 @@ static int mrfld_adc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	platform_set_drvdata(pdev, indio_dev);
-
-	indio_dev->dev.parent = dev;
 	indio_dev->name = pdev->name;
 
 	indio_dev->channels = mrfld_adc_channels;
@@ -215,28 +213,11 @@ static int mrfld_adc_probe(struct platform_device *pdev)
 	indio_dev->info = &mrfld_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_map_array_register(indio_dev, iio_maps);
+	ret = devm_iio_map_array_register(dev, indio_dev, iio_maps);
 	if (ret)
 		return ret;
 
-	ret = devm_iio_device_register(dev, indio_dev);
-	if (ret < 0)
-		goto err_array_unregister;
-
-	return 0;
-
-err_array_unregister:
-	iio_map_array_unregister(indio_dev);
-	return ret;
-}
-
-static int mrfld_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-
-	iio_map_array_unregister(indio_dev);
-
-	return 0;
+	return devm_iio_device_register(dev, indio_dev);
 }
 
 static const struct platform_device_id mrfld_adc_id_table[] = {
@@ -250,7 +231,6 @@ static struct platform_driver mrfld_adc_driver = {
 		.name = "mrfld_bcove_adc",
 	},
 	.probe = mrfld_adc_probe,
-	.remove = mrfld_adc_remove,
 	.id_table = mrfld_adc_id_table,
 };
 module_platform_driver(mrfld_adc_driver);
diff --git a/drivers/iio/adc/lp8788_adc.c b/drivers/iio/adc/lp8788_adc.c
index c1fc1b678e0f..6d9b354bc705 100644
--- a/drivers/iio/adc/lp8788_adc.c
+++ b/drivers/iio/adc/lp8788_adc.c
@@ -163,7 +163,8 @@ static struct iio_map lp8788_default_iio_maps[] = {
 	{ }
 };
 
-static int lp8788_iio_map_register(struct iio_dev *indio_dev,
+static int lp8788_iio_map_register(struct device *dev,
+				struct iio_dev *indio_dev,
 				struct lp8788_platform_data *pdata,
 				struct lp8788_adc *adc)
 {
@@ -173,7 +174,7 @@ static int lp8788_iio_map_register(struct iio_dev *indio_dev,
 	map = (!pdata || !pdata->adc_pdata) ?
 		lp8788_default_iio_maps : pdata->adc_pdata;
 
-	ret = iio_map_array_register(indio_dev, map);
+	ret = devm_iio_map_array_register(dev, indio_dev, map);
 	if (ret) {
 		dev_err(&indio_dev->dev, "iio map err: %d\n", ret);
 		return ret;
@@ -196,48 +197,24 @@ static int lp8788_adc_probe(struct platform_device *pdev)
 
 	adc = iio_priv(indio_dev);
 	adc->lp = lp;
-	platform_set_drvdata(pdev, indio_dev);
 
-	indio_dev->dev.of_node = pdev->dev.of_node;
-	ret = lp8788_iio_map_register(indio_dev, lp->pdata, adc);
+	ret = lp8788_iio_map_register(&pdev->dev, indio_dev, lp->pdata, adc);
 	if (ret)
 		return ret;
 
 	mutex_init(&adc->lock);
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = pdev->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &lp8788_adc_info;
 	indio_dev->channels = lp8788_adc_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lp8788_adc_channels);
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		dev_err(&pdev->dev, "iio dev register err: %d\n", ret);
-		goto err_iio_device;
-	}
-
-	return 0;
-
-err_iio_device:
-	iio_map_array_unregister(indio_dev);
-	return ret;
-}
-
-static int lp8788_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-
-	iio_device_unregister(indio_dev);
-	iio_map_array_unregister(indio_dev);
-
-	return 0;
+	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
 static struct platform_driver lp8788_adc_driver = {
 	.probe = lp8788_adc_probe,
-	.remove = lp8788_adc_remove,
 	.driver = {
 		.name = LP8788_DEV_ADC,
 	},
diff --git a/drivers/iio/adc/lpc18xx_adc.c b/drivers/iio/adc/lpc18xx_adc.c
index 4c6ac6644dc0..450a243d1f7c 100644
--- a/drivers/iio/adc/lpc18xx_adc.c
+++ b/drivers/iio/adc/lpc18xx_adc.c
@@ -17,10 +17,9 @@
 #include <linux/iio/driver.h>
 #include <linux/io.h>
 #include <linux/iopoll.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 
@@ -115,6 +114,18 @@ static const struct iio_info lpc18xx_adc_info = {
 	.read_raw = lpc18xx_adc_read_raw,
 };
 
+static void lpc18xx_clear_cr_reg(void *data)
+{
+	struct lpc18xx_adc *adc = data;
+
+	writel(0, adc->base + LPC18XX_ADC_CR);
+}
+
+static void lpc18xx_regulator_disable(void *vref)
+{
+	regulator_disable(vref);
+}
+
 static int lpc18xx_adc_probe(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev;
@@ -127,7 +138,6 @@ static int lpc18xx_adc_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	platform_set_drvdata(pdev, indio_dev);
 	adc = iio_priv(indio_dev);
 	adc->dev = &pdev->dev;
 	mutex_init(&adc->lock);
@@ -136,23 +146,17 @@ static int lpc18xx_adc_probe(struct platform_device *pdev)
 	if (IS_ERR(adc->base))
 		return PTR_ERR(adc->base);
 
-	adc->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(adc->clk)) {
-		dev_err(&pdev->dev, "error getting clock\n");
-		return PTR_ERR(adc->clk);
-	}
-
-	rate = clk_get_rate(adc->clk);
-	clkdiv = DIV_ROUND_UP(rate, LPC18XX_ADC_CLK_TARGET);
+	adc->clk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(adc->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(adc->clk),
+				     "error getting clock\n");
 
 	adc->vref = devm_regulator_get(&pdev->dev, "vref");
-	if (IS_ERR(adc->vref)) {
-		dev_err(&pdev->dev, "error getting regulator\n");
-		return PTR_ERR(adc->vref);
-	}
+	if (IS_ERR(adc->vref))
+		return dev_err_probe(&pdev->dev, PTR_ERR(adc->vref),
+				     "error getting regulator\n");
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &lpc18xx_adc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = lpc18xx_adc_iio_channels;
@@ -164,44 +168,22 @@ static int lpc18xx_adc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	ret = clk_prepare_enable(adc->clk);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to enable clock\n");
-		goto dis_reg;
-	}
+	ret = devm_add_action_or_reset(&pdev->dev, lpc18xx_regulator_disable, adc->vref);
+	if (ret)
+		return ret;
+
+	rate = clk_get_rate(adc->clk);
+	clkdiv = DIV_ROUND_UP(rate, LPC18XX_ADC_CLK_TARGET);
 
 	adc->cr_reg = (clkdiv << LPC18XX_ADC_CR_CLKDIV_SHIFT) |
 			LPC18XX_ADC_CR_PDN;
 	writel(adc->cr_reg, adc->base + LPC18XX_ADC_CR);
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		dev_err(&pdev->dev, "unable to register device\n");
-		goto dis_clk;
-	}
-
-	return 0;
-
-dis_clk:
-	writel(0, adc->base + LPC18XX_ADC_CR);
-	clk_disable_unprepare(adc->clk);
-dis_reg:
-	regulator_disable(adc->vref);
-	return ret;
-}
-
-static int lpc18xx_adc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct lpc18xx_adc *adc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	writel(0, adc->base + LPC18XX_ADC_CR);
-	clk_disable_unprepare(adc->clk);
-	regulator_disable(adc->vref);
+	ret = devm_add_action_or_reset(&pdev->dev, lpc18xx_clear_cr_reg, adc);
+	if (ret)
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
 static const struct of_device_id lpc18xx_adc_match[] = {
@@ -212,7 +194,6 @@ MODULE_DEVICE_TABLE(of, lpc18xx_adc_match);
 
 static struct platform_driver lpc18xx_adc_driver = {
 	.probe	= lpc18xx_adc_probe,
-	.remove	= lpc18xx_adc_remove,
 	.driver	= {
 		.name = "lpc18xx-adc",
 		.of_match_table = lpc18xx_adc_match,
diff --git a/drivers/iio/adc/lpc32xx_adc.c b/drivers/iio/adc/lpc32xx_adc.c
index b896f7ff4572..b56ce15255cf 100644
--- a/drivers/iio/adc/lpc32xx_adc.c
+++ b/drivers/iio/adc/lpc32xx_adc.c
@@ -14,6 +14,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 
@@ -196,7 +197,6 @@ static int lpc32xx_adc_probe(struct platform_device *pdev)
 	init_completion(&st->completion);
 
 	iodev->name = LPC32XXAD_NAME;
-	iodev->dev.parent = &pdev->dev;
 	iodev->info = &lpc32xx_adc_iio_info;
 	iodev->modes = INDIO_DIRECT_MODE;
 	iodev->num_channels = ARRAY_SIZE(lpc32xx_adc_iio_channels);
@@ -210,19 +210,17 @@ static int lpc32xx_adc_probe(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id lpc32xx_adc_match[] = {
 	{ .compatible = "nxp,lpc3220-adc" },
 	{},
 };
 MODULE_DEVICE_TABLE(of, lpc32xx_adc_match);
-#endif
 
 static struct platform_driver lpc32xx_adc_driver = {
 	.probe		= lpc32xx_adc_probe,
 	.driver		= {
 		.name	= LPC32XXAD_NAME,
-		.of_match_table = of_match_ptr(lpc32xx_adc_match),
+		.of_match_table = lpc32xx_adc_match,
 	},
 };
 
diff --git a/drivers/iio/adc/ltc2471.c b/drivers/iio/adc/ltc2471.c
index 55fab612843a..0e0fe881a8e6 100644
--- a/drivers/iio/adc/ltc2471.c
+++ b/drivers/iio/adc/ltc2471.c
@@ -116,7 +116,6 @@ static int ltc2471_i2c_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &ltc2471_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/ltc2485.c b/drivers/iio/adc/ltc2485.c
index c418466d51fd..37c762f8218c 100644
--- a/drivers/iio/adc/ltc2485.c
+++ b/drivers/iio/adc/ltc2485.c
@@ -108,7 +108,6 @@ static int ltc2485_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &ltc2485_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/ltc2496.c b/drivers/iio/adc/ltc2496.c
index 88a30156a849..2593fa4322eb 100644
--- a/drivers/iio/adc/ltc2496.c
+++ b/drivers/iio/adc/ltc2496.c
@@ -14,7 +14,8 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/driver.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include "ltc2497.h"
 
@@ -24,10 +25,10 @@ struct ltc2496_driverdata {
 	struct spi_device *spi;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	unsigned char rxbuf[3] ____cacheline_aligned;
+	unsigned char rxbuf[3] __aligned(IIO_DMA_MINALIGN);
 	unsigned char txbuf[3];
 };
 
@@ -74,21 +75,25 @@ static int ltc2496_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 	st->spi = spi;
 	st->common_ddata.result_and_measure = ltc2496_result_and_measure;
+	st->common_ddata.chip_info = device_get_match_data(dev);
 
 	return ltc2497core_probe(dev, indio_dev);
 }
 
-static int ltc2496_remove(struct spi_device *spi)
+static void ltc2496_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 
 	ltc2497core_remove(indio_dev);
-
-	return 0;
 }
 
+static const struct ltc2497_chip_info ltc2496_info = {
+	.resolution = 16,
+	.name = NULL,
+};
+
 static const struct of_device_id ltc2496_of_match[] = {
-	{ .compatible = "lltc,ltc2496", },
+	{ .compatible = "lltc,ltc2496", .data = &ltc2496_info, },
 	{},
 };
 MODULE_DEVICE_TABLE(of, ltc2496_of_match);
@@ -96,7 +101,7 @@ MODULE_DEVICE_TABLE(of, ltc2496_of_match);
 static struct spi_driver ltc2496_driver = {
 	.driver = {
 		.name = "ltc2496",
-		.of_match_table = of_match_ptr(ltc2496_of_match),
+		.of_match_table = ltc2496_of_match,
 	},
 	.probe = ltc2496_probe,
 	.remove = ltc2496_remove,
diff --git a/drivers/iio/adc/ltc2497-core.c b/drivers/iio/adc/ltc2497-core.c
index f5f7039caacc..f52d37af4d1f 100644
--- a/drivers/iio/adc/ltc2497-core.c
+++ b/drivers/iio/adc/ltc2497-core.c
@@ -95,7 +95,7 @@ static int ltc2497core_read_raw(struct iio_dev *indio_dev,
 			return ret;
 
 		*val = ret / 1000;
-		*val2 = 17;
+		*val2 = ddata->chip_info->resolution + 1;
 
 		return IIO_VAL_FRACTIONAL_LOG2;
 
@@ -169,8 +169,15 @@ int ltc2497core_probe(struct device *dev, struct iio_dev *indio_dev)
 	struct ltc2497core_driverdata *ddata = iio_priv(indio_dev);
 	int ret;
 
-	indio_dev->dev.parent = dev;
-	indio_dev->name = dev_name(dev);
+	/*
+	 * Keep using dev_name() for the iio_dev's name on some of the parts,
+	 * since updating it would result in a ABI breakage.
+	 */
+	if (ddata->chip_info->name)
+		indio_dev->name = ddata->chip_info->name;
+	else
+		indio_dev->name = dev_name(dev);
+
 	indio_dev->info = &ltc2497core_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ltc2497core_channel;
@@ -181,13 +188,9 @@ int ltc2497core_probe(struct device *dev, struct iio_dev *indio_dev)
 		return ret;
 
 	ddata->ref = devm_regulator_get(dev, "vref");
-	if (IS_ERR(ddata->ref)) {
-		if (PTR_ERR(ddata->ref) != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get vref regulator: %pe\n",
-				ddata->ref);
-
-		return PTR_ERR(ddata->ref);
-	}
+	if (IS_ERR(ddata->ref))
+		return dev_err_probe(dev, PTR_ERR(ddata->ref),
+				     "Failed to get vref regulator\n");
 
 	ret = regulator_enable(ddata->ref);
 	if (ret < 0) {
diff --git a/drivers/iio/adc/ltc2497.c b/drivers/iio/adc/ltc2497.c
index 5db63d7c6bc5..556f10dfb502 100644
--- a/drivers/iio/adc/ltc2497.c
+++ b/drivers/iio/adc/ltc2497.c
@@ -11,19 +11,32 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/driver.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+
+#include <asm/unaligned.h>
 
 #include "ltc2497.h"
 
+enum ltc2497_chip_type {
+	TYPE_LTC2497,
+	TYPE_LTC2499,
+};
+
 struct ltc2497_driverdata {
 	/* this must be the first member */
 	struct ltc2497core_driverdata common_ddata;
 	struct i2c_client *client;
+	u32 recv_size;
+	u32 sub_lsb;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	__be32 buf ____cacheline_aligned;
+	union {
+		__be32 d32;
+		u8 d8[3];
+	} data __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ltc2497_result_and_measure(struct ltc2497core_driverdata *ddata,
@@ -34,13 +47,43 @@ static int ltc2497_result_and_measure(struct ltc2497core_driverdata *ddata,
 	int ret;
 
 	if (val) {
-		ret = i2c_master_recv(st->client, (char *)&st->buf, 3);
+		if (st->recv_size == 3)
+			ret = i2c_master_recv(st->client, (char *)&st->data.d8,
+					      st->recv_size);
+		else
+			ret = i2c_master_recv(st->client, (char *)&st->data.d32,
+					      st->recv_size);
 		if (ret < 0) {
 			dev_err(&st->client->dev, "i2c_master_recv failed\n");
 			return ret;
 		}
 
-		*val = (be32_to_cpu(st->buf) >> 14) - (1 << 17);
+		/*
+		 * The data format is 16/24 bit 2s complement, but with an upper sign bit on the
+		 * resolution + 1 position, which is set for positive values only. Given this
+		 * bit's value, subtracting BIT(resolution + 1) from the ADC's result is
+		 * equivalent to a sign extension.
+		 */
+		if (st->recv_size == 3) {
+			*val = (get_unaligned_be24(st->data.d8) >> st->sub_lsb)
+				- BIT(ddata->chip_info->resolution + 1);
+		} else {
+			*val = (be32_to_cpu(st->data.d32) >> st->sub_lsb)
+				- BIT(ddata->chip_info->resolution + 1);
+		}
+
+		/*
+		 * The part started a new conversion at the end of the above i2c
+		 * transfer, so if the address didn't change since the last call
+		 * everything is fine and we can return early.
+		 * If not (which should only happen when some sort of bulk
+		 * conversion is implemented) we have to program the new
+		 * address. Note that this probably fails as the conversion that
+		 * was triggered above is like not complete yet and the two
+		 * operations have to be done in a single transfer.
+		 */
+		if (ddata->addr_prev == address)
+			return 0;
 	}
 
 	ret = i2c_smbus_write_byte(st->client,
@@ -54,9 +97,11 @@ static int ltc2497_result_and_measure(struct ltc2497core_driverdata *ddata,
 static int ltc2497_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
+	const struct ltc2497_chip_info *chip_info;
 	struct iio_dev *indio_dev;
 	struct ltc2497_driverdata *st;
 	struct device *dev = &client->dev;
+	u32 resolution;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C |
 				     I2C_FUNC_SMBUS_WRITE_BYTE))
@@ -71,26 +116,46 @@ static int ltc2497_probe(struct i2c_client *client,
 	st->client = client;
 	st->common_ddata.result_and_measure = ltc2497_result_and_measure;
 
+	chip_info = device_get_match_data(dev);
+	if (!chip_info)
+		chip_info = (const struct ltc2497_chip_info *)id->driver_data;
+	st->common_ddata.chip_info = chip_info;
+
+	resolution = chip_info->resolution;
+	st->sub_lsb = 31 - (resolution + 1);
+	st->recv_size = BITS_TO_BYTES(resolution) + 1;
+
 	return ltc2497core_probe(dev, indio_dev);
 }
 
-static int ltc2497_remove(struct i2c_client *client)
+static void ltc2497_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	ltc2497core_remove(indio_dev);
-
-	return 0;
 }
 
+static const struct ltc2497_chip_info ltc2497_info[] = {
+	[TYPE_LTC2497] = {
+		.resolution = 16,
+		.name = NULL,
+	},
+	[TYPE_LTC2499] = {
+		.resolution = 24,
+		.name = "ltc2499",
+	},
+};
+
 static const struct i2c_device_id ltc2497_id[] = {
-	{ "ltc2497", 0 },
+	{ "ltc2497", (kernel_ulong_t)&ltc2497_info[TYPE_LTC2497] },
+	{ "ltc2499", (kernel_ulong_t)&ltc2497_info[TYPE_LTC2499] },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, ltc2497_id);
 
 static const struct of_device_id ltc2497_of_match[] = {
-	{ .compatible = "lltc,ltc2497", },
+	{ .compatible = "lltc,ltc2497", .data = &ltc2497_info[TYPE_LTC2497] },
+	{ .compatible = "lltc,ltc2499", .data = &ltc2497_info[TYPE_LTC2499] },
 	{},
 };
 MODULE_DEVICE_TABLE(of, ltc2497_of_match);
@@ -98,7 +163,7 @@ MODULE_DEVICE_TABLE(of, ltc2497_of_match);
 static struct i2c_driver ltc2497_driver = {
 	.driver = {
 		.name = "ltc2497",
-		.of_match_table = of_match_ptr(ltc2497_of_match),
+		.of_match_table = ltc2497_of_match,
 	},
 	.probe = ltc2497_probe,
 	.remove = ltc2497_remove,
diff --git a/drivers/iio/adc/ltc2497.h b/drivers/iio/adc/ltc2497.h
index d0b42dd6b8ad..e023de0d88c4 100644
--- a/drivers/iio/adc/ltc2497.h
+++ b/drivers/iio/adc/ltc2497.h
@@ -4,9 +4,15 @@
 #define LTC2497_CONFIG_DEFAULT		LTC2497_ENABLE
 #define LTC2497_CONVERSION_TIME_MS	150ULL
 
+struct ltc2497_chip_info {
+	u32 resolution;
+	const char *name;
+};
+
 struct ltc2497core_driverdata {
 	struct regulator *ref;
 	ktime_t	time_prev;
+	const struct ltc2497_chip_info	*chip_info;
 	u8 addr_prev;
 	int (*result_and_measure)(struct ltc2497core_driverdata *ddata,
 				  u8 address, int *val);
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 02834ca3e1ce..136fcf753837 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -14,6 +14,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/delay.h>
 
@@ -59,6 +60,9 @@
 #define MAX1027_NAVG_32   (0x03 << 2)
 #define MAX1027_AVG_EN    BIT(4)
 
+/* Device can achieve 300ksps so we assume a 3.33us conversion delay */
+#define MAX1027_CONVERSION_UDELAY 4
+
 enum max1027_id {
 	max1027,
 	max1029,
@@ -79,7 +83,6 @@ static const struct spi_device_id max1027_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, max1027_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id max1027_adc_dt_ids[] = {
 	{ .compatible = "maxim,max1027" },
 	{ .compatible = "maxim,max1029" },
@@ -90,7 +93,6 @@ static const struct of_device_id max1027_adc_dt_ids[] = {
 	{},
 };
 MODULE_DEVICE_TABLE(of, max1027_adc_dt_ids);
-#endif
 
 #define MAX1027_V_CHAN(index, depth)					\
 	{								\
@@ -104,7 +106,7 @@ MODULE_DEVICE_TABLE(of, max1027_adc_dt_ids);
 			.sign = 'u',					\
 			.realbits = depth,				\
 			.storagebits = 16,				\
-			.shift = 2,					\
+			.shift = (depth == 10) ? 2 : 0,			\
 			.endianness = IIO_BE,				\
 		},							\
 	}
@@ -143,7 +145,6 @@ MODULE_DEVICE_TABLE(of, max1027_adc_dt_ids);
 	MAX1027_V_CHAN(11, depth)
 
 #define MAX1X31_CHANNELS(depth)			\
-	MAX1X27_CHANNELS(depth),		\
 	MAX1X29_CHANNELS(depth),		\
 	MAX1027_V_CHAN(12, depth),		\
 	MAX1027_V_CHAN(13, depth),		\
@@ -174,18 +175,53 @@ static const struct iio_chan_spec max1231_channels[] = {
 	MAX1X31_CHANNELS(12),
 };
 
+/*
+ * These devices are able to scan from 0 to N, N being the highest voltage
+ * channel requested by the user. The temperature can be included or not,
+ * but cannot be retrieved alone. Based on the below
+ * ->available_scan_masks, the core will select the most appropriate
+ * ->active_scan_mask and the "minimum" number of channels will be
+ * scanned and pushed to the buffers.
+ *
+ * For example, if the user wants channels 1, 4 and 5, all channels from
+ * 0 to 5 will be scanned and pushed to the IIO buffers. The core will then
+ * filter out the unneeded samples based on the ->active_scan_mask that has
+ * been selected and only channels 1, 4 and 5 will be available to the user
+ * in the shared buffer.
+ */
+#define MAX1X27_SCAN_MASK_TEMP BIT(0)
+
+#define MAX1X27_SCAN_MASKS(temp)					\
+	GENMASK(1, 1 - (temp)), GENMASK(2, 1 - (temp)),			\
+	GENMASK(3, 1 - (temp)), GENMASK(4, 1 - (temp)),			\
+	GENMASK(5, 1 - (temp)), GENMASK(6, 1 - (temp)),			\
+	GENMASK(7, 1 - (temp)), GENMASK(8, 1 - (temp))
+
+#define MAX1X29_SCAN_MASKS(temp)					\
+	MAX1X27_SCAN_MASKS(temp),					\
+	GENMASK(9, 1 - (temp)), GENMASK(10, 1 - (temp)),		\
+	GENMASK(11, 1 - (temp)), GENMASK(12, 1 - (temp))
+
+#define MAX1X31_SCAN_MASKS(temp)					\
+	MAX1X29_SCAN_MASKS(temp),					\
+	GENMASK(13, 1 - (temp)), GENMASK(14, 1 - (temp)),		\
+	GENMASK(15, 1 - (temp)), GENMASK(16, 1 - (temp))
+
 static const unsigned long max1027_available_scan_masks[] = {
-	0x000001ff,
+	MAX1X27_SCAN_MASKS(0),
+	MAX1X27_SCAN_MASKS(1),
 	0x00000000,
 };
 
 static const unsigned long max1029_available_scan_masks[] = {
-	0x00001fff,
+	MAX1X29_SCAN_MASKS(0),
+	MAX1X29_SCAN_MASKS(1),
 	0x00000000,
 };
 
 static const unsigned long max1031_available_scan_masks[] = {
-	0x0001ffff,
+	MAX1X31_SCAN_MASKS(0),
+	MAX1X31_SCAN_MASKS(1),
 	0x00000000,
 };
 
@@ -234,10 +270,65 @@ struct max1027_state {
 	struct iio_trigger		*trig;
 	__be16				*buffer;
 	struct mutex			lock;
+	struct completion		complete;
 
-	u8				reg ____cacheline_aligned;
+	u8				reg __aligned(IIO_DMA_MINALIGN);
 };
 
+static int max1027_wait_eoc(struct iio_dev *indio_dev)
+{
+	struct max1027_state *st = iio_priv(indio_dev);
+	unsigned int conversion_time = MAX1027_CONVERSION_UDELAY;
+	int ret;
+
+	if (st->spi->irq) {
+		ret = wait_for_completion_timeout(&st->complete,
+						  msecs_to_jiffies(1000));
+		reinit_completion(&st->complete);
+		if (!ret)
+			return -ETIMEDOUT;
+	} else {
+		if (indio_dev->active_scan_mask)
+			conversion_time *= hweight32(*indio_dev->active_scan_mask);
+
+		usleep_range(conversion_time, conversion_time * 2);
+	}
+
+	return 0;
+}
+
+/* Scan from chan 0 to the highest requested channel. Include temperature on demand. */
+static int max1027_configure_chans_and_start(struct iio_dev *indio_dev)
+{
+	struct max1027_state *st = iio_priv(indio_dev);
+
+	st->reg = MAX1027_CONV_REG | MAX1027_SCAN_0_N;
+	st->reg |= MAX1027_CHAN(fls(*indio_dev->active_scan_mask) - 2);
+	if (*indio_dev->active_scan_mask & MAX1X27_SCAN_MASK_TEMP)
+		st->reg |= MAX1027_TEMP;
+
+	return spi_write(st->spi, &st->reg, 1);
+}
+
+static int max1027_enable_trigger(struct iio_dev *indio_dev, bool enable)
+{
+	struct max1027_state *st = iio_priv(indio_dev);
+
+	st->reg = MAX1027_SETUP_REG | MAX1027_REF_MODE2;
+
+	/*
+	 * Start acquisition on:
+	 * MODE0: external hardware trigger wired to the cnvst input pin
+	 * MODE2: conversion register write
+	 */
+	if (enable)
+		st->reg |= MAX1027_CKS_MODE0;
+	else
+		st->reg |= MAX1027_CKS_MODE2;
+
+	return spi_write(st->spi, &st->reg, 1);
+}
+
 static int max1027_read_single_value(struct iio_dev *indio_dev,
 				     struct iio_chan_spec const *chan,
 				     int *val)
@@ -245,19 +336,9 @@ static int max1027_read_single_value(struct iio_dev *indio_dev,
 	int ret;
 	struct max1027_state *st = iio_priv(indio_dev);
 
-	if (iio_buffer_enabled(indio_dev)) {
-		dev_warn(&indio_dev->dev, "trigger mode already enabled");
-		return -EBUSY;
-	}
-
-	/* Start acquisition on conversion register write */
-	st->reg = MAX1027_SETUP_REG | MAX1027_REF_MODE2 | MAX1027_CKS_MODE2;
-	ret = spi_write(st->spi, &st->reg, 1);
-	if (ret < 0) {
-		dev_err(&indio_dev->dev,
-			"Failed to configure setup register\n");
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
 		return ret;
-	}
 
 	/* Configure conversion register with the requested chan */
 	st->reg = MAX1027_CONV_REG | MAX1027_CHAN(chan->channel) |
@@ -268,18 +349,24 @@ static int max1027_read_single_value(struct iio_dev *indio_dev,
 	if (ret < 0) {
 		dev_err(&indio_dev->dev,
 			"Failed to configure conversion register\n");
-		return ret;
+		goto release;
 	}
 
 	/*
 	 * For an unknown reason, when we use the mode "10" (write
 	 * conversion register), the interrupt doesn't occur every time.
-	 * So we just wait 1 ms.
+	 * So we just wait the maximum conversion time and deliver the value.
 	 */
-	mdelay(1);
+	ret = max1027_wait_eoc(indio_dev);
+	if (ret)
+		goto release;
 
 	/* Read result */
 	ret = spi_read(st->spi, st->buffer, (chan->type == IIO_TEMP) ? 4 : 2);
+
+release:
+	iio_device_release_direct_mode(indio_dev);
+
 	if (ret < 0)
 		return ret;
 
@@ -329,8 +416,8 @@ static int max1027_read_raw(struct iio_dev *indio_dev,
 }
 
 static int max1027_debugfs_reg_access(struct iio_dev *indio_dev,
-				      unsigned reg, unsigned writeval,
-				      unsigned *readval)
+				      unsigned int reg, unsigned int writeval,
+				      unsigned int *readval)
 {
 	struct max1027_state *st = iio_priv(indio_dev);
 	u8 *val = (u8 *)st->buffer;
@@ -345,61 +432,96 @@ static int max1027_debugfs_reg_access(struct iio_dev *indio_dev,
 	return spi_write(st->spi, val, 1);
 }
 
-static int max1027_validate_trigger(struct iio_dev *indio_dev,
-				    struct iio_trigger *trig)
+static int max1027_set_cnvst_trigger_state(struct iio_trigger *trig, bool state)
 {
-	struct max1027_state *st = iio_priv(indio_dev);
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	int ret;
+
+	/*
+	 * In order to disable the convst trigger, start acquisition on
+	 * conversion register write, which basically disables triggering
+	 * conversions upon cnvst changes and thus has the effect of disabling
+	 * the external hardware trigger.
+	 */
+	ret = max1027_enable_trigger(indio_dev, state);
+	if (ret)
+		return ret;
 
-	if (st->trig != trig)
-		return -EINVAL;
+	if (state) {
+		ret = max1027_configure_chans_and_start(indio_dev);
+		if (ret)
+			return ret;
+	}
 
 	return 0;
 }
 
-static int max1027_set_trigger_state(struct iio_trigger *trig, bool state)
+static int max1027_read_scan(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct max1027_state *st = iio_priv(indio_dev);
+	unsigned int scanned_chans;
 	int ret;
 
-	if (state) {
-		/* Start acquisition on cnvst */
-		st->reg = MAX1027_SETUP_REG | MAX1027_CKS_MODE0 |
-			  MAX1027_REF_MODE2;
-		ret = spi_write(st->spi, &st->reg, 1);
-		if (ret < 0)
-			return ret;
+	scanned_chans = fls(*indio_dev->active_scan_mask) - 1;
+	if (*indio_dev->active_scan_mask & MAX1X27_SCAN_MASK_TEMP)
+		scanned_chans++;
 
-		/* Scan from 0 to max */
-		st->reg = MAX1027_CONV_REG | MAX1027_CHAN(0) |
-			  MAX1027_SCAN_N_M | MAX1027_TEMP;
-		ret = spi_write(st->spi, &st->reg, 1);
-		if (ret < 0)
-			return ret;
-	} else {
-		/* Start acquisition on conversion register write */
-		st->reg = MAX1027_SETUP_REG | MAX1027_CKS_MODE2	|
-			  MAX1027_REF_MODE2;
-		ret = spi_write(st->spi, &st->reg, 1);
-		if (ret < 0)
-			return ret;
-	}
+	/* fill buffer with all channel */
+	ret = spi_read(st->spi, st->buffer, scanned_chans * 2);
+	if (ret < 0)
+		return ret;
+
+	iio_push_to_buffers(indio_dev, st->buffer);
 
 	return 0;
 }
 
+static irqreturn_t max1027_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct max1027_state *st = iio_priv(indio_dev);
+
+	/*
+	 * If buffers are disabled (raw read) or when using external triggers,
+	 * we just need to unlock the waiters which will then handle the data.
+	 *
+	 * When using the internal trigger, we must hand-off the choice of the
+	 * handler to the core which will then lookup through the interrupt tree
+	 * for the right handler registered with iio_triggered_buffer_setup()
+	 * to execute, as this trigger might very well be used in conjunction
+	 * with another device. The core will then call the relevant handler to
+	 * perform the data processing step.
+	 */
+	if (!iio_buffer_enabled(indio_dev))
+		complete(&st->complete);
+	else
+		iio_trigger_poll(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
 static irqreturn_t max1027_trigger_handler(int irq, void *private)
 {
 	struct iio_poll_func *pf = private;
 	struct iio_dev *indio_dev = pf->indio_dev;
-	struct max1027_state *st = iio_priv(indio_dev);
+	int ret;
 
-	pr_debug("%s(irq=%d, private=0x%p)\n", __func__, irq, private);
+	if (!iio_trigger_using_own(indio_dev)) {
+		ret = max1027_configure_chans_and_start(indio_dev);
+		if (ret)
+			goto out;
 
-	/* fill buffer with all channel */
-	spi_read(st->spi, st->buffer, indio_dev->masklength * 2);
+		/* This is a threaded handler, it is fine to wait for an IRQ */
+		ret = max1027_wait_eoc(indio_dev);
+		if (ret)
+			goto out;
+	}
 
-	iio_push_to_buffers(indio_dev, st->buffer);
+	ret = max1027_read_scan(indio_dev);
+out:
+	if (ret)
+		dev_err(&indio_dev->dev,
+			"Cannot read scanned values (%d)\n", ret);
 
 	iio_trigger_notify_done(indio_dev->trig);
 
@@ -408,12 +530,11 @@ static irqreturn_t max1027_trigger_handler(int irq, void *private)
 
 static const struct iio_trigger_ops max1027_trigger_ops = {
 	.validate_device = &iio_trigger_validate_own_device,
-	.set_trigger_state = &max1027_set_trigger_state,
+	.set_trigger_state = &max1027_set_cnvst_trigger_state,
 };
 
 static const struct iio_info max1027_info = {
 	.read_raw = &max1027_read_raw,
-	.validate_trigger = &max1027_validate_trigger,
 	.debugfs_reg_access = &max1027_debugfs_reg_access,
 };
 
@@ -423,25 +544,20 @@ static int max1027_probe(struct spi_device *spi)
 	struct iio_dev *indio_dev;
 	struct max1027_state *st;
 
-	pr_debug("%s: probe(spi = 0x%p)\n", __func__, spi);
-
 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
-	if (indio_dev == NULL) {
+	if (!indio_dev) {
 		pr_err("Can't allocate iio device\n");
 		return -ENOMEM;
 	}
 
-	spi_set_drvdata(spi, indio_dev);
-
 	st = iio_priv(indio_dev);
 	st->spi = spi;
 	st->info = &max1027_chip_info_tbl[spi_get_device_id(spi)->driver_data];
 
 	mutex_init(&st->lock);
+	init_completion(&st->complete);
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->info = &max1027_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->info->channels;
@@ -449,26 +565,26 @@ static int max1027_probe(struct spi_device *spi)
 	indio_dev->available_scan_masks = st->info->available_scan_masks;
 
 	st->buffer = devm_kmalloc_array(&indio_dev->dev,
-				  indio_dev->num_channels, 2,
-				  GFP_KERNEL);
-	if (st->buffer == NULL) {
-		dev_err(&indio_dev->dev, "Can't allocate buffer\n");
+					indio_dev->num_channels, 2,
+					GFP_KERNEL);
+	if (!st->buffer)
 		return -ENOMEM;
+
+	/* Enable triggered buffers */
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      &max1027_trigger_handler,
+					      NULL);
+	if (ret < 0) {
+		dev_err(&indio_dev->dev, "Failed to setup buffer\n");
+		return ret;
 	}
 
+	/* If there is an EOC interrupt, register the cnvst hardware trigger */
 	if (spi->irq) {
-		ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
-						      &iio_pollfunc_store_time,
-						      &max1027_trigger_handler,
-						      NULL);
-		if (ret < 0) {
-			dev_err(&indio_dev->dev, "Failed to setup buffer\n");
-			return ret;
-		}
-
 		st->trig = devm_iio_trigger_alloc(&spi->dev, "%s-trigger",
 						  indio_dev->name);
-		if (st->trig == NULL) {
+		if (!st->trig) {
 			ret = -ENOMEM;
 			dev_err(&indio_dev->dev,
 				"Failed to allocate iio trigger\n");
@@ -476,7 +592,6 @@ static int max1027_probe(struct spi_device *spi)
 		}
 
 		st->trig->ops = &max1027_trigger_ops;
-		st->trig->dev.parent = &spi->dev;
 		iio_trigger_set_drvdata(st->trig, indio_dev);
 		ret = devm_iio_trigger_register(&indio_dev->dev,
 						st->trig);
@@ -486,12 +601,9 @@ static int max1027_probe(struct spi_device *spi)
 			return ret;
 		}
 
-		ret = devm_request_threaded_irq(&spi->dev, spi->irq,
-						iio_trigger_generic_data_rdy_poll,
-						NULL,
-						IRQF_TRIGGER_FALLING,
-						spi->dev.driver->name,
-						st->trig);
+		ret = devm_request_irq(&spi->dev, spi->irq, max1027_handler,
+				       IRQF_TRIGGER_FALLING,
+				       spi->dev.driver->name, indio_dev);
 		if (ret < 0) {
 			dev_err(&indio_dev->dev, "Failed to allocate IRQ.\n");
 			return ret;
@@ -514,13 +626,18 @@ static int max1027_probe(struct spi_device *spi)
 		return ret;
 	}
 
+	/* Assume conversion on register write for now */
+	ret = max1027_enable_trigger(indio_dev, false);
+	if (ret)
+		return ret;
+
 	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static struct spi_driver max1027_driver = {
 	.driver = {
 		.name	= "max1027",
-		.of_match_table = of_match_ptr(max1027_adc_dt_ids),
+		.of_match_table = max1027_adc_dt_ids,
 	},
 	.probe		= max1027_probe,
 	.id_table	= max1027_id,
diff --git a/drivers/iio/adc/max11100.c b/drivers/iio/adc/max11100.c
index 3440539cfdba..49e38dca8fe2 100644
--- a/drivers/iio/adc/max11100.c
+++ b/drivers/iio/adc/max11100.c
@@ -8,9 +8,11 @@
  */
 #include <linux/delay.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
+#include <asm/unaligned.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/driver.h>
@@ -31,13 +33,13 @@ struct max11100_state {
 	struct spi_device *spi;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	u8 buffer[3] ____cacheline_aligned;
+	u8 buffer[3] __aligned(IIO_DMA_MINALIGN);
 };
 
-static struct iio_chan_spec max11100_channels[] = {
+static const struct iio_chan_spec max11100_channels[] = {
 	{ /* [0] */
 		.type = IIO_VOLTAGE,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
@@ -62,7 +64,7 @@ static int max11100_read_single(struct iio_dev *indio_dev, int *val)
 		return -EINVAL;
 	}
 
-	*val = (state->buffer[1] << 8) | state->buffer[2];
+	*val = get_unaligned_be16(&state->buffer[1]);
 
 	return 0;
 }
@@ -100,6 +102,11 @@ static const struct iio_info max11100_info = {
 	.read_raw = max11100_read_raw,
 };
 
+static void max11100_regulator_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int max11100_probe(struct spi_device *spi)
 {
 	int ret;
@@ -110,13 +117,9 @@ static int max11100_probe(struct spi_device *spi)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	spi_set_drvdata(spi, indio_dev);
-
 	state = iio_priv(indio_dev);
 	state->spi = spi;
 
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = "max11100";
 	indio_dev->info = &max11100_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -131,27 +134,12 @@ static int max11100_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, max11100_regulator_disable,
+				       state->vref_reg);
 	if (ret)
-		goto disable_regulator;
-
-	return 0;
-
-disable_regulator:
-	regulator_disable(state->vref_reg);
-
-	return ret;
-}
-
-static int max11100_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct max11100_state *state = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	regulator_disable(state->vref_reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct of_device_id max11100_ids[] = {
@@ -163,10 +151,9 @@ MODULE_DEVICE_TABLE(of, max11100_ids);
 static struct spi_driver max11100_driver = {
 	.driver = {
 		.name	= "max11100",
-		.of_match_table = of_match_ptr(max11100_ids),
+		.of_match_table = max11100_ids,
 	},
 	.probe		= max11100_probe,
-	.remove		= max11100_remove,
 };
 
 module_spi_driver(max11100_driver);
diff --git a/drivers/iio/adc/max1118.c b/drivers/iio/adc/max1118.c
index 3b6f3b9a6c5b..75ab57d9aef7 100644
--- a/drivers/iio/adc/max1118.c
+++ b/drivers/iio/adc/max1118.c
@@ -18,6 +18,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -35,8 +36,13 @@ struct max1118 {
 	struct spi_device *spi;
 	struct mutex lock;
 	struct regulator *reg;
+	/* Ensure natural alignment of buffer elements */
+	struct {
+		u8 channels[2];
+		s64 ts __aligned(8);
+	} scan;
 
-	u8 data ____cacheline_aligned;
+	u8 data __aligned(IIO_DMA_MINALIGN);
 };
 
 #define MAX1118_CHANNEL(ch)						\
@@ -60,9 +66,8 @@ static const struct iio_chan_spec max1118_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(2),
 };
 
-static int max1118_read(struct spi_device *spi, int channel)
+static int max1118_read(struct iio_dev *indio_dev, int channel)
 {
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct max1118 *adc = iio_priv(indio_dev);
 	struct spi_transfer xfers[] = {
 		/*
@@ -71,7 +76,10 @@ static int max1118_read(struct spi_device *spi, int channel)
 		 */
 		{
 			.len = 0,
-			.delay_usecs = 1,	/* > CNVST Low Time 100 ns */
+			.delay = {	/* > CNVST Low Time 100 ns */
+				.value = 1,
+				.unit = SPI_DELAY_UNIT_USECS
+			},
 			.cs_change = 1,
 		},
 		/*
@@ -81,7 +89,10 @@ static int max1118_read(struct spi_device *spi, int channel)
 		 */
 		{
 			.len = 0,
-			.delay_usecs = 8,
+			.delay = {
+				.value = 8,
+				.unit = SPI_DELAY_UNIT_USECS
+			},
 		},
 		{
 			.rx_buf = &adc->data,
@@ -91,9 +102,9 @@ static int max1118_read(struct spi_device *spi, int channel)
 	int ret;
 
 	if (channel == 0)
-		ret = spi_sync_transfer(spi, xfers + 1, 2);
+		ret = spi_sync_transfer(adc->spi, xfers + 1, 2);
 	else
-		ret = spi_sync_transfer(spi, xfers, 3);
+		ret = spi_sync_transfer(adc->spi, xfers, 3);
 
 	if (ret)
 		return ret;
@@ -101,11 +112,10 @@ static int max1118_read(struct spi_device *spi, int channel)
 	return adc->data;
 }
 
-static int max1118_get_vref_mV(struct spi_device *spi)
+static int max1118_get_vref_mV(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct max1118 *adc = iio_priv(indio_dev);
-	const struct spi_device_id *id = spi_get_device_id(spi);
+	const struct spi_device_id *id = spi_get_device_id(adc->spi);
 	int vref_uV;
 
 	switch (id->driver_data) {
@@ -132,14 +142,14 @@ static int max1118_read_raw(struct iio_dev *indio_dev,
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
 		mutex_lock(&adc->lock);
-		*val = max1118_read(adc->spi, chan->channel);
+		*val = max1118_read(indio_dev, chan->channel);
 		mutex_unlock(&adc->lock);
 		if (*val < 0)
 			return *val;
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		*val = max1118_get_vref_mV(adc->spi);
+		*val = max1118_get_vref_mV(indio_dev);
 		if (*val < 0)
 			return *val;
 		*val2 = 8;
@@ -159,7 +169,6 @@ static irqreturn_t max1118_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct max1118 *adc = iio_priv(indio_dev);
-	u8 data[16] = { }; /* 2x 8-bit ADC data + padding + 8 bytes timestamp */
 	int scan_index;
 	int i = 0;
 
@@ -169,7 +178,7 @@ static irqreturn_t max1118_trigger_handler(int irq, void *p)
 			indio_dev->masklength) {
 		const struct iio_chan_spec *scan_chan =
 				&indio_dev->channels[scan_index];
-		int ret = max1118_read(adc->spi, scan_chan->channel);
+		int ret = max1118_read(indio_dev, scan_chan->channel);
 
 		if (ret < 0) {
 			dev_warn(&adc->spi->dev,
@@ -177,10 +186,10 @@ static irqreturn_t max1118_trigger_handler(int irq, void *p)
 			goto out;
 		}
 
-		data[i] = ret;
+		adc->scan.channels[i] = ret;
 		i++;
 	}
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
 					   iio_get_time_ns(indio_dev));
 out:
 	mutex_unlock(&adc->lock);
@@ -190,6 +199,11 @@ out:
 	return IRQ_HANDLED;
 }
 
+static void max1118_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int max1118_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -207,19 +221,21 @@ static int max1118_probe(struct spi_device *spi)
 
 	if (id->driver_data == max1118) {
 		adc->reg = devm_regulator_get(&spi->dev, "vref");
-		if (IS_ERR(adc->reg)) {
-			dev_err(&spi->dev, "failed to get vref regulator\n");
-			return PTR_ERR(adc->reg);
-		}
+		if (IS_ERR(adc->reg))
+			return dev_err_probe(&spi->dev, PTR_ERR(adc->reg),
+					     "failed to get vref regulator\n");
 		ret = regulator_enable(adc->reg);
 		if (ret)
 			return ret;
-	}
 
-	spi_set_drvdata(spi, indio_dev);
+		ret = devm_add_action_or_reset(&spi->dev, max1118_reg_disable,
+					       adc->reg);
+		if (ret)
+			return ret;
+
+	}
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &max1118_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = max1118_channels;
@@ -231,40 +247,14 @@ static int max1118_probe(struct spi_device *spi)
 	 * a conversion has been completed, the MAX1117/MAX1118/MAX1119 will go
 	 * into AutoShutdown mode until the next conversion is initiated.
 	 */
-	max1118_read(spi, 0);
-
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-					max1118_trigger_handler, NULL);
-	if (ret)
-		goto err_reg_disable;
+	max1118_read(indio_dev, 0);
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
+					      max1118_trigger_handler, NULL);
 	if (ret)
-		goto err_buffer_cleanup;
-
-	return 0;
-
-err_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-err_reg_disable:
-	if (id->driver_data == max1118)
-		regulator_disable(adc->reg);
-
-	return ret;
-}
-
-static int max1118_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct max1118 *adc = iio_priv(indio_dev);
-	const struct spi_device_id *id = spi_get_device_id(spi);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (id->driver_data == max1118)
-		return regulator_disable(adc->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id max1118_id[] = {
@@ -275,8 +265,6 @@ static const struct spi_device_id max1118_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, max1118_id);
 
-#ifdef CONFIG_OF
-
 static const struct of_device_id max1118_dt_ids[] = {
 	{ .compatible = "maxim,max1117" },
 	{ .compatible = "maxim,max1118" },
@@ -285,15 +273,12 @@ static const struct of_device_id max1118_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, max1118_dt_ids);
 
-#endif
-
 static struct spi_driver max1118_spi_driver = {
 	.driver = {
 		.name = "max1118",
-		.of_match_table = of_match_ptr(max1118_dt_ids),
+		.of_match_table = max1118_dt_ids,
 	},
 	.probe = max1118_probe,
-	.remove = max1118_remove,
 	.id_table = max1118_id,
 };
 module_spi_driver(max1118_spi_driver);
diff --git a/drivers/iio/adc/max11205.c b/drivers/iio/adc/max11205.c
new file mode 100644
index 000000000000..65fc32971ba5
--- /dev/null
+++ b/drivers/iio/adc/max11205.c
@@ -0,0 +1,183 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Maxim MAX11205 16-Bit Delta-Sigma ADC
+ *
+ * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1240-max11205.pdf
+ * Copyright (C) 2022 Analog Devices, Inc.
+ * Author: Ramona Bolboaca <ramona.bolboaca@analog.com>
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/adc/ad_sigma_delta.h>
+
+#define MAX11205_BIT_SCALE	15
+#define MAX11205A_OUT_DATA_RATE	116
+#define MAX11205B_OUT_DATA_RATE	13
+
+enum max11205_chip_type {
+	TYPE_MAX11205A,
+	TYPE_MAX11205B,
+};
+
+struct max11205_chip_info {
+	unsigned int	out_data_rate;
+	const char	*name;
+};
+
+struct max11205_state {
+	const struct max11205_chip_info	*chip_info;
+	struct regulator		*vref;
+	struct ad_sigma_delta		sd;
+};
+
+static const struct ad_sigma_delta_info max11205_sigma_delta_info = {
+	.has_registers = false,
+};
+
+static int max11205_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct max11205_state *st = iio_priv(indio_dev);
+	int reg_mv;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return ad_sigma_delta_single_conversion(indio_dev, chan, val);
+	case IIO_CHAN_INFO_SCALE:
+		reg_mv = regulator_get_voltage(st->vref);
+		if (reg_mv < 0)
+			return reg_mv;
+		reg_mv /= 1000;
+		*val = reg_mv;
+		*val2 = MAX11205_BIT_SCALE;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*val = st->chip_info->out_data_rate;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info max11205_iio_info = {
+	.read_raw = max11205_read_raw,
+	.validate_trigger = ad_sd_validate_trigger,
+};
+
+static const struct iio_chan_spec max11205_channels[] = {
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static const struct max11205_chip_info max11205_chip_info[] = {
+	[TYPE_MAX11205A] = {
+		.out_data_rate = MAX11205A_OUT_DATA_RATE,
+		.name = "max11205a",
+	},
+	[TYPE_MAX11205B] = {
+		.out_data_rate = MAX11205B_OUT_DATA_RATE,
+		.name = "max11205b",
+	},
+};
+
+static void max11205_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
+static int max11205_probe(struct spi_device *spi)
+{
+	struct max11205_state *st;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	ad_sd_init(&st->sd, indio_dev, spi, &max11205_sigma_delta_info);
+
+	st->chip_info = device_get_match_data(&spi->dev);
+	if (!st->chip_info)
+		st->chip_info =
+			(const struct max11205_chip_info *)spi_get_device_id(spi)->driver_data;
+
+	indio_dev->name = st->chip_info->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = max11205_channels;
+	indio_dev->num_channels = 1;
+	indio_dev->info = &max11205_iio_info;
+
+	st->vref = devm_regulator_get(&spi->dev, "vref");
+	if (IS_ERR(st->vref))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->vref),
+				     "Failed to get vref regulator\n");
+
+	ret = regulator_enable(st->vref);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, max11205_reg_disable, st->vref);
+	if (ret)
+		return ret;
+
+	ret = devm_ad_sd_setup_buffer_and_trigger(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id max11205_spi_ids[] = {
+	{ "max11205a", (kernel_ulong_t)&max11205_chip_info[TYPE_MAX11205A] },
+	{ "max11205b", (kernel_ulong_t)&max11205_chip_info[TYPE_MAX11205B] },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, max11205_spi_ids);
+
+static const struct of_device_id max11205_dt_ids[] = {
+	{
+		.compatible = "maxim,max11205a",
+		.data = &max11205_chip_info[TYPE_MAX11205A],
+	},
+	{
+		.compatible = "maxim,max11205b",
+		.data = &max11205_chip_info[TYPE_MAX11205B],
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, max11205_dt_ids);
+
+static struct spi_driver max11205_spi_driver = {
+	.driver = {
+		.name = "max11205",
+		.of_match_table = max11205_dt_ids,
+	},
+	.probe = max11205_probe,
+	.id_table = max11205_spi_ids,
+};
+module_spi_driver(max11205_spi_driver);
+
+MODULE_AUTHOR("Ramona Bolboaca <ramona.bolboaca@analog.com>");
+MODULE_DESCRIPTION("MAX11205 ADC driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD_SIGMA_DELTA);
diff --git a/drivers/iio/adc/max1241.c b/drivers/iio/adc/max1241.c
new file mode 100644
index 000000000000..a815ad1f6913
--- /dev/null
+++ b/drivers/iio/adc/max1241.c
@@ -0,0 +1,223 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * MAX1241 low-power, 12-bit serial ADC
+ *
+ * Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX1240-MAX1241.pdf
+ */
+
+#include <linux/delay.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#define MAX1241_VAL_MASK GENMASK(11, 0)
+#define MAX1241_SHUTDOWN_DELAY_USEC 4
+
+enum max1241_id {
+	max1241,
+};
+
+struct max1241 {
+	struct spi_device *spi;
+	struct mutex lock;
+	struct regulator *vdd;
+	struct regulator *vref;
+	struct gpio_desc *shutdown;
+
+	__be16 data __aligned(IIO_DMA_MINALIGN);
+};
+
+static const struct iio_chan_spec max1241_channels[] = {
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static int max1241_read(struct max1241 *adc)
+{
+	struct spi_transfer xfers[] = {
+		/*
+		 * Begin conversion by bringing /CS low for at least
+		 * tconv us.
+		 */
+		{
+			.len = 0,
+			.delay.value = 8,
+			.delay.unit = SPI_DELAY_UNIT_USECS,
+		},
+		/*
+		 * Then read two bytes of data in our RX buffer.
+		 */
+		{
+			.rx_buf = &adc->data,
+			.len = 2,
+		},
+	};
+
+	return spi_sync_transfer(adc->spi, xfers, ARRAY_SIZE(xfers));
+}
+
+static int max1241_read_raw(struct iio_dev *indio_dev,
+			struct iio_chan_spec const *chan,
+			int *val, int *val2, long mask)
+{
+	int ret, vref_uV;
+	struct max1241 *adc = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&adc->lock);
+
+		if (adc->shutdown) {
+			gpiod_set_value(adc->shutdown, 0);
+			udelay(MAX1241_SHUTDOWN_DELAY_USEC);
+			ret = max1241_read(adc);
+			gpiod_set_value(adc->shutdown, 1);
+		} else
+			ret = max1241_read(adc);
+
+		if (ret) {
+			mutex_unlock(&adc->lock);
+			return ret;
+		}
+
+		*val = (be16_to_cpu(adc->data) >> 3) & MAX1241_VAL_MASK;
+
+		mutex_unlock(&adc->lock);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		vref_uV = regulator_get_voltage(adc->vref);
+
+		if (vref_uV < 0)
+			return vref_uV;
+
+		*val = vref_uV / 1000;
+		*val2 = 12;
+
+		return IIO_VAL_FRACTIONAL_LOG2;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info max1241_info = {
+	.read_raw = max1241_read_raw,
+};
+
+static void max1241_disable_vdd_action(void *data)
+{
+	struct max1241 *adc = data;
+	struct device *dev = &adc->spi->dev;
+	int err;
+
+	err = regulator_disable(adc->vdd);
+	if (err)
+		dev_err(dev, "could not disable vdd regulator.\n");
+}
+
+static void max1241_disable_vref_action(void *data)
+{
+	struct max1241 *adc = data;
+	struct device *dev = &adc->spi->dev;
+	int err;
+
+	err = regulator_disable(adc->vref);
+	if (err)
+		dev_err(dev, "could not disable vref regulator.\n");
+}
+
+static int max1241_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct iio_dev *indio_dev;
+	struct max1241 *adc;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	adc = iio_priv(indio_dev);
+	adc->spi = spi;
+	mutex_init(&adc->lock);
+
+	adc->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(adc->vdd))
+		return dev_err_probe(dev, PTR_ERR(adc->vdd),
+				     "failed to get vdd regulator\n");
+
+	ret = regulator_enable(adc->vdd);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, max1241_disable_vdd_action, adc);
+	if (ret) {
+		dev_err(dev, "could not set up vdd regulator cleanup action\n");
+		return ret;
+	}
+
+	adc->vref = devm_regulator_get(dev, "vref");
+	if (IS_ERR(adc->vref))
+		return dev_err_probe(dev, PTR_ERR(adc->vref),
+				     "failed to get vref regulator\n");
+
+	ret = regulator_enable(adc->vref);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, max1241_disable_vref_action, adc);
+	if (ret) {
+		dev_err(dev, "could not set up vref regulator cleanup action\n");
+		return ret;
+	}
+
+	adc->shutdown = devm_gpiod_get_optional(dev, "shutdown",
+						GPIOD_OUT_HIGH);
+	if (IS_ERR(adc->shutdown))
+		return dev_err_probe(dev, PTR_ERR(adc->shutdown),
+				     "cannot get shutdown gpio\n");
+
+	if (adc->shutdown)
+		dev_dbg(dev, "shutdown pin passed, low-power mode enabled");
+	else
+		dev_dbg(dev, "no shutdown pin passed, low-power mode disabled");
+
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->info = &max1241_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = max1241_channels;
+	indio_dev->num_channels = ARRAY_SIZE(max1241_channels);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct spi_device_id max1241_id[] = {
+	{ "max1241", max1241 },
+	{}
+};
+
+static const struct of_device_id max1241_dt_ids[] = {
+	{ .compatible = "maxim,max1241" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, max1241_dt_ids);
+
+static struct spi_driver max1241_spi_driver = {
+	.driver = {
+		.name = "max1241",
+		.of_match_table = max1241_dt_ids,
+	},
+	.probe = max1241_probe,
+	.id_table = max1241_id,
+};
+module_spi_driver(max1241_spi_driver);
+
+MODULE_AUTHOR("Alexandru Lazar <alazar@startmail.com>");
+MODULE_DESCRIPTION("MAX1241 ADC driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 5c2cc61b666e..a28cf86cdce8 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -22,14 +22,13 @@
 #include <linux/slab.h>
 #include <linux/err.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/driver.h>
 #include <linux/iio/kfifo_buf.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
@@ -150,6 +149,7 @@ struct max1363_chip_info {
  * @current_mode:	the scan mode of this chip
  * @requestedmask:	a valid requested set of channels
  * @reg:		supply regulator
+ * @lock:		lock to ensure state is consistent
  * @monitor_on:		whether monitor mode is enabled
  * @monitor_speed:	parameter corresponding to device monitor speed setting
  * @mask_high:		bitmask for enabled high thresholds
@@ -169,6 +169,7 @@ struct max1363_state {
 	const struct max1363_mode	*current_mode;
 	u32				requestedmask;
 	struct regulator		*reg;
+	struct mutex			lock;
 
 	/* Using monitor modes and buffer at the same time is
 	   currently not supported */
@@ -364,7 +365,11 @@ static int max1363_read_single_chan(struct iio_dev *indio_dev,
 	struct max1363_state *st = iio_priv(indio_dev);
 	struct i2c_client *client = st->client;
 
-	mutex_lock(&indio_dev->mlock);
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+	mutex_lock(&st->lock);
+
 	/*
 	 * If monitor mode is enabled, the method for reading a single
 	 * channel will have to be rather different and has not yet
@@ -372,7 +377,7 @@ static int max1363_read_single_chan(struct iio_dev *indio_dev,
 	 *
 	 * Also, cannot read directly if buffered capture enabled.
 	 */
-	if (st->monitor_on || iio_buffer_enabled(indio_dev)) {
+	if (st->monitor_on) {
 		ret = -EBUSY;
 		goto error_ret;
 	}
@@ -404,8 +409,10 @@ static int max1363_read_single_chan(struct iio_dev *indio_dev,
 		data = rxbuf[0];
 	}
 	*val = data;
+
 error_ret:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
+	iio_device_release_direct_mode(indio_dev);
 	return ret;
 
 }
@@ -705,9 +712,9 @@ static ssize_t max1363_monitor_store_freq(struct device *dev,
 	if (!found)
 		return -EINVAL;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	st->monitor_speed = i;
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return 0;
 }
@@ -810,12 +817,12 @@ static int max1363_read_event_config(struct iio_dev *indio_dev,
 	int val;
 	int number = chan->channel;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	if (dir == IIO_EV_DIR_FALLING)
 		val = (1 << number) & st->mask_low;
 	else
 		val = (1 << number) & st->mask_high;
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return val;
 }
@@ -962,7 +969,11 @@ static int max1363_write_event_config(struct iio_dev *indio_dev,
 	u16 unifiedmask;
 	int number = chan->channel;
 
-	mutex_lock(&indio_dev->mlock);
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+	mutex_lock(&st->lock);
+
 	unifiedmask = st->mask_low | st->mask_high;
 	if (dir == IIO_EV_DIR_FALLING) {
 
@@ -989,7 +1000,8 @@ static int max1363_write_event_config(struct iio_dev *indio_dev,
 
 	max1363_monitor_mode_update(st, !!(st->mask_high | st->mask_low));
 error_ret:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
+	iio_device_release_direct_mode(indio_dev);
 
 	return ret;
 }
@@ -1516,8 +1528,6 @@ done:
 	return IRQ_HANDLED;
 }
 
-#ifdef CONFIG_OF
-
 #define MAX1363_COMPATIBLE(of_compatible, cfg) {		\
 			.compatible = of_compatible,		\
 			.data = &max1363_chip_info_tbl[cfg],	\
@@ -1565,7 +1575,11 @@ static const struct of_device_id max1363_of_match[] = {
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, max1363_of_match);
-#endif
+
+static void max1363_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
 
 static int max1363_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
@@ -1580,27 +1594,22 @@ static int max1363_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 
-	indio_dev->dev.of_node = client->dev.of_node;
-	ret = iio_map_array_register(indio_dev, client->dev.platform_data);
-	if (ret < 0)
-		return ret;
-
 	st = iio_priv(indio_dev);
 
+	mutex_init(&st->lock);
 	st->reg = devm_regulator_get(&client->dev, "vcc");
-	if (IS_ERR(st->reg)) {
-		ret = PTR_ERR(st->reg);
-		goto error_unregister_map;
-	}
+	if (IS_ERR(st->reg))
+		return PTR_ERR(st->reg);
 
 	ret = regulator_enable(st->reg);
 	if (ret)
-		goto error_unregister_map;
+		return ret;
 
-	/* this is only used for device removal purposes */
-	i2c_set_clientdata(client, indio_dev);
+	ret = devm_add_action_or_reset(&client->dev, max1363_reg_disable, st->reg);
+	if (ret)
+		return ret;
 
-	st->chip_info = of_device_get_match_data(&client->dev);
+	st->chip_info = device_get_match_data(&client->dev);
 	if (!st->chip_info)
 		st->chip_info = &max1363_chip_info_tbl[id->driver_data];
 	st->client = client;
@@ -1612,13 +1621,17 @@ static int max1363_probe(struct i2c_client *client,
 
 		ret = regulator_enable(vref);
 		if (ret)
-			goto error_disable_reg;
+			return ret;
+
+		ret = devm_add_action_or_reset(&client->dev, max1363_reg_disable, vref);
+		if (ret)
+			return ret;
+
 		st->vref = vref;
 		vref_uv = regulator_get_voltage(vref);
-		if (vref_uv <= 0) {
-			ret = -EINVAL;
-			goto error_disable_reg;
-		}
+		if (vref_uv <= 0)
+			return -EINVAL;
+
 		st->vref_uv = vref_uv;
 	}
 
@@ -1630,17 +1643,13 @@ static int max1363_probe(struct i2c_client *client,
 		st->send = max1363_smbus_send;
 		st->recv = max1363_smbus_recv;
 	} else {
-		ret = -EOPNOTSUPP;
-		goto error_disable_reg;
+		return -EOPNOTSUPP;
 	}
 
 	ret = max1363_alloc_scan_masks(indio_dev);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
-	/* Establish that the iio_dev is a child of the i2c device */
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->name = id->name;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
@@ -1648,12 +1657,12 @@ static int max1363_probe(struct i2c_client *client,
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	ret = max1363_initial_setup(st);
 	if (ret < 0)
-		goto error_disable_reg;
+		return ret;
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-		&max1363_trigger_handler, NULL);
+	ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL,
+					      &max1363_trigger_handler, NULL);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
 	if (client->irq) {
 		ret = devm_request_threaded_irq(&client->dev, st->client->irq,
@@ -1664,39 +1673,10 @@ static int max1363_probe(struct i2c_client *client,
 					   indio_dev);
 
 		if (ret)
-			goto error_uninit_buffer;
+			return ret;
 	}
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0)
-		goto error_uninit_buffer;
-
-	return 0;
-
-error_uninit_buffer:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_disable_reg:
-	if (st->vref)
-		regulator_disable(st->vref);
-	regulator_disable(st->reg);
-error_unregister_map:
-	iio_map_array_unregister(indio_dev);
-	return ret;
-}
-
-static int max1363_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct max1363_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	if (st->vref)
-		regulator_disable(st->vref);
-	regulator_disable(st->reg);
-	iio_map_array_unregister(indio_dev);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id max1363_id[] = {
@@ -1746,10 +1726,9 @@ MODULE_DEVICE_TABLE(i2c, max1363_id);
 static struct i2c_driver max1363_driver = {
 	.driver = {
 		.name = "max1363",
-		.of_match_table = of_match_ptr(max1363_of_match),
+		.of_match_table = max1363_of_match,
 	},
 	.probe = max1363_probe,
-	.remove = max1363_remove,
 	.id_table = max1363_id,
 };
 module_i2c_driver(max1363_driver);
diff --git a/drivers/iio/adc/max9611.c b/drivers/iio/adc/max9611.c
index 04d5ff7d2c8e..f982f00303dc 100644
--- a/drivers/iio/adc/max9611.c
+++ b/drivers/iio/adc/max9611.c
@@ -22,7 +22,8 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #define DRIVER_NAME			"max9611"
 
@@ -110,7 +111,7 @@ enum max9611_conf_ids {
 	CONF_TEMP,
 };
 
-/**
+/*
  * max9611_mux_conf - associate ADC mux configuration with register address
  *		      where data shall be read from
  */
@@ -133,7 +134,7 @@ enum max9611_csa_gain_params {
 	CSA_GAIN_OFFS_RAW,
 };
 
-/**
+/*
  * max9611_csa_gain_conf - associate gain multiplier with LSB and
  *			   offset values.
  *
@@ -428,7 +429,7 @@ static ssize_t max9611_shunt_resistor_show(struct device *dev,
 	i = max9611->shunt_resistor_uohm / 1000000;
 	r = max9611->shunt_resistor_uohm % 1000000;
 
-	return sprintf(buf, "%u.%06u\n", i, r);
+	return sysfs_emit(buf, "%u.%06u\n", i, r);
 }
 
 static IIO_DEVICE_ATTR(in_power_shunt_resistor, 0444,
@@ -513,11 +514,9 @@ static int max9611_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
 	const char * const shunt_res_prop = "shunt-resistor-micro-ohms";
-	const struct device_node *of_node = client->dev.of_node;
-	const struct of_device_id *of_id =
-		of_match_device(max9611_of_table, &client->dev);
 	struct max9611_dev *max9611;
 	struct iio_dev *indio_dev;
+	struct device *dev = &client->dev;
 	unsigned int of_shunt;
 	int ret;
 
@@ -528,15 +527,14 @@ static int max9611_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 
 	max9611			= iio_priv(indio_dev);
-	max9611->dev		= &client->dev;
+	max9611->dev		= dev;
 	max9611->i2c_client	= client;
 	mutex_init(&max9611->lock);
 
-	ret = of_property_read_u32(of_node, shunt_res_prop, &of_shunt);
+	ret = device_property_read_u32(dev, shunt_res_prop, &of_shunt);
 	if (ret) {
-		dev_err(&client->dev,
-			"Missing %s property for %pOF node\n",
-			shunt_res_prop, of_node);
+		dev_err(dev, "Missing %s property for %pfw node\n",
+			shunt_res_prop, dev_fwnode(dev));
 		return ret;
 	}
 	max9611->shunt_resistor_uohm = of_shunt;
@@ -545,15 +543,13 @@ static int max9611_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent	= &client->dev;
-	indio_dev->dev.of_node	= client->dev.of_node;
-	indio_dev->name		= of_id->data;
+	indio_dev->name		= device_get_match_data(dev);
 	indio_dev->modes	= INDIO_DIRECT_MODE;
 	indio_dev->info		= &indio_info;
 	indio_dev->channels	= max9611_channels;
 	indio_dev->num_channels	= ARRAY_SIZE(max9611_channels);
 
-	return devm_iio_device_register(&client->dev, indio_dev);
+	return devm_iio_device_register(dev, indio_dev);
 }
 
 static struct i2c_driver max9611_driver = {
diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
index 465c7625a55a..f3b81798b3c9 100644
--- a/drivers/iio/adc/mcp320x.c
+++ b/drivers/iio/adc/mcp320x.c
@@ -27,13 +27,13 @@
  * MCP3553
  *
  * Datasheet can be found here:
- * http://ww1.microchip.com/downloads/en/DeviceDoc/21293C.pdf  mcp3001
- * http://ww1.microchip.com/downloads/en/DeviceDoc/21294E.pdf  mcp3002
- * http://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf  mcp3004/08
+ * https://ww1.microchip.com/downloads/en/DeviceDoc/21293C.pdf  mcp3001
+ * https://ww1.microchip.com/downloads/en/DeviceDoc/21294E.pdf  mcp3002
+ * https://ww1.microchip.com/downloads/en/DeviceDoc/21295d.pdf  mcp3004/08
  * http://ww1.microchip.com/downloads/en/DeviceDoc/21290D.pdf  mcp3201
  * http://ww1.microchip.com/downloads/en/DeviceDoc/21034D.pdf  mcp3202
  * http://ww1.microchip.com/downloads/en/DeviceDoc/21298c.pdf  mcp3204/08
- * http://ww1.microchip.com/downloads/en/DeviceDoc/21700E.pdf  mcp3301
+ * https://ww1.microchip.com/downloads/en/DeviceDoc/21700E.pdf  mcp3301
  * http://ww1.microchip.com/downloads/en/DeviceDoc/21950D.pdf  mcp3550/1/3
  */
 
@@ -41,6 +41,7 @@
 #include <linux/delay.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/regulator/consumer.h>
 
@@ -91,7 +92,7 @@ struct mcp320x {
 	struct mutex lock;
 	const struct mcp320x_chip_info *chip_info;
 
-	u8 tx_buf ____cacheline_aligned;
+	u8 tx_buf __aligned(IIO_DMA_MINALIGN);
 	u8 rx_buf[4];
 };
 
@@ -384,8 +385,6 @@ static int mcp320x_probe(struct spi_device *spi)
 	adc = iio_priv(indio_dev);
 	adc->spi = spi;
 
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &mcp320x_info;
@@ -421,7 +420,8 @@ static int mcp320x_probe(struct spi_device *spi)
 			adc->transfer[1].len++;
 
 		/* conversions are started by asserting CS pin for 8 usec */
-		adc->start_conv_transfer.delay_usecs = 8;
+		adc->start_conv_transfer.delay.value = 8;
+		adc->start_conv_transfer.delay.unit = SPI_DELAY_UNIT_USECS;
 		spi_message_init_with_transfers(&adc->start_conv_msg,
 						&adc->start_conv_transfer, 1);
 
@@ -459,18 +459,15 @@ reg_disable:
 	return ret;
 }
 
-static int mcp320x_remove(struct spi_device *spi)
+static void mcp320x_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct mcp320x *adc = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	regulator_disable(adc->reg);
-
-	return 0;
 }
 
-#if defined(CONFIG_OF)
 static const struct of_device_id mcp320x_dt_ids[] = {
 	/* NOTE: The use of compatibles with no vendor prefix is deprecated. */
 	{ .compatible = "mcp3001" },
@@ -498,7 +495,6 @@ static const struct of_device_id mcp320x_dt_ids[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mcp320x_dt_ids);
-#endif
 
 static const struct spi_device_id mcp320x_id[] = {
 	{ "mcp3001", mcp3001 },
@@ -521,7 +517,7 @@ MODULE_DEVICE_TABLE(spi, mcp320x_id);
 static struct spi_driver mcp320x_driver = {
 	.driver = {
 		.name = "mcp320x",
-		.of_match_table = of_match_ptr(mcp320x_dt_ids),
+		.of_match_table = mcp320x_dt_ids,
 	},
 	.probe = mcp320x_probe,
 	.remove = mcp320x_remove,
diff --git a/drivers/iio/adc/mcp3422.c b/drivers/iio/adc/mcp3422.c
index ea24d7c58b12..da353dcb1e9d 100644
--- a/drivers/iio/adc/mcp3422.c
+++ b/drivers/iio/adc/mcp3422.c
@@ -6,8 +6,8 @@
  * Author: Angelo Compagnucci <angelo.compagnucci@gmail.com>
  *
  * Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/22088b.pdf
- *            http://ww1.microchip.com/downloads/en/DeviceDoc/22226a.pdf
- *            http://ww1.microchip.com/downloads/en/DeviceDoc/22072b.pdf
+ *            https://ww1.microchip.com/downloads/en/DeviceDoc/22226a.pdf
+ *            https://ww1.microchip.com/downloads/en/DeviceDoc/22072b.pdf
  *
  * This driver exports the value of analog input voltage to sysfs, the
  * voltage unit is nV.
@@ -16,9 +16,10 @@
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/delay.h>
 #include <linux/sysfs.h>
-#include <linux/of.h>
+#include <asm/unaligned.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -95,16 +96,12 @@ static int mcp3422_update_config(struct mcp3422 *adc, u8 newconfig)
 {
 	int ret;
 
-	mutex_lock(&adc->lock);
-
 	ret = i2c_master_send(adc->i2c, &newconfig, 1);
 	if (ret > 0) {
 		adc->config = newconfig;
 		ret = 0;
 	}
 
-	mutex_unlock(&adc->lock);
-
 	return ret;
 }
 
@@ -117,11 +114,11 @@ static int mcp3422_read(struct mcp3422 *adc, int *value, u8 *config)
 
 	if (sample_rate == MCP3422_SRATE_3) {
 		ret = i2c_master_recv(adc->i2c, buf, 4);
-		temp = buf[0] << 16 | buf[1] << 8 | buf[2];
+		temp = get_unaligned_be24(&buf[0]);
 		*config = buf[3];
 	} else {
 		ret = i2c_master_recv(adc->i2c, buf, 3);
-		temp = buf[0] << 8 | buf[1];
+		temp = get_unaligned_be16(&buf[0]);
 		*config = buf[2];
 	}
 
@@ -137,6 +134,8 @@ static int mcp3422_read_channel(struct mcp3422 *adc,
 	u8 config;
 	u8 req_channel = channel->channel;
 
+	mutex_lock(&adc->lock);
+
 	if (req_channel != MCP3422_CHANNEL(adc->config)) {
 		config = adc->config;
 		config &= ~MCP3422_CHANNEL_MASK;
@@ -144,12 +143,18 @@ static int mcp3422_read_channel(struct mcp3422 *adc,
 		config &= ~MCP3422_PGA_MASK;
 		config |= MCP3422_PGA_VALUE(adc->pga[req_channel]);
 		ret = mcp3422_update_config(adc, config);
-		if (ret < 0)
+		if (ret < 0) {
+			mutex_unlock(&adc->lock);
 			return ret;
+		}
 		msleep(mcp3422_read_times[MCP3422_SAMPLE_RATE(adc->config)]);
 	}
 
-	return mcp3422_read(adc, value, &config);
+	ret = mcp3422_read(adc, value, &config);
+
+	mutex_unlock(&adc->lock);
+
+	return ret;
 }
 
 static int mcp3422_read_raw(struct iio_dev *iio,
@@ -346,8 +351,6 @@ static int mcp3422_probe(struct i2c_client *client,
 
 	mutex_init(&adc->lock);
 
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &mcp3422_info;
@@ -403,18 +406,16 @@ static const struct i2c_device_id mcp3422_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp3422_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id mcp3422_of_match[] = {
 	{ .compatible = "mcp3422" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mcp3422_of_match);
-#endif
 
 static struct i2c_driver mcp3422_driver = {
 	.driver = {
 		.name = "mcp3422",
-		.of_match_table = of_match_ptr(mcp3422_of_match),
+		.of_match_table = mcp3422_of_match,
 	},
 	.probe = mcp3422_probe,
 	.id_table = mcp3422_id,
diff --git a/drivers/iio/adc/mcp3911.c b/drivers/iio/adc/mcp3911.c
index dd52f08ec82e..76b334f5ac61 100644
--- a/drivers/iio/adc/mcp3911.c
+++ b/drivers/iio/adc/mcp3911.c
@@ -5,14 +5,25 @@
  * Copyright (C) 2018 Marcus Folkesson <marcus.folkesson@gmail.com>
  * Copyright (C) 2018 Kent Gustavsson <kent@minoris.se>
  */
+#include <linux/bitfield.h>
+#include <linux/bits.h>
 #include <linux/clk.h>
 #include <linux/delay.h>
 #include <linux/err.h>
-#include <linux/iio/iio.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/trigger.h>
+
+#include <asm/unaligned.h>
+
 #define MCP3911_REG_CHANNEL0		0x00
 #define MCP3911_REG_CHANNEL1		0x03
 #define MCP3911_REG_MOD			0x06
@@ -20,6 +31,8 @@
 #define MCP3911_REG_GAIN		0x09
 
 #define MCP3911_REG_STATUSCOM		0x0a
+#define MCP3911_STATUSCOM_DRHIZ         BIT(12)
+#define MCP3911_STATUSCOM_READ		GENMASK(7, 6)
 #define MCP3911_STATUSCOM_CH1_24WIDTH	BIT(4)
 #define MCP3911_STATUSCOM_CH0_24WIDTH	BIT(3)
 #define MCP3911_STATUSCOM_EN_OFFCAL	BIT(2)
@@ -28,6 +41,7 @@
 #define MCP3911_REG_CONFIG		0x0c
 #define MCP3911_CONFIG_CLKEXT		BIT(1)
 #define MCP3911_CONFIG_VREFEXT		BIT(2)
+#define MCP3911_CONFIG_OSR		GENMASK(13, 11)
 
 #define MCP3911_REG_OFFCAL_CH0		0x0e
 #define MCP3911_REG_GAINCAL_CH0		0x11
@@ -38,20 +52,31 @@
 #define MCP3911_CHANNEL(x)		(MCP3911_REG_CHANNEL0 + x * 3)
 #define MCP3911_OFFCAL(x)		(MCP3911_REG_OFFCAL_CH0 + x * 6)
 
-/* Internal voltage reference in uV */
-#define MCP3911_INT_VREF_UV		1200000
+/* Internal voltage reference in mV */
+#define MCP3911_INT_VREF_MV		1200
 
-#define MCP3911_REG_READ(reg, id)	((((reg) << 1) | ((id) << 5) | (1 << 0)) & 0xff)
-#define MCP3911_REG_WRITE(reg, id)	((((reg) << 1) | ((id) << 5) | (0 << 0)) & 0xff)
+#define MCP3911_REG_READ(reg, id)	((((reg) << 1) | ((id) << 6) | (1 << 0)) & 0xff)
+#define MCP3911_REG_WRITE(reg, id)	((((reg) << 1) | ((id) << 6) | (0 << 0)) & 0xff)
+#define MCP3911_REG_MASK		GENMASK(4, 1)
 
 #define MCP3911_NUM_CHANNELS		2
 
+static const int mcp3911_osr_table[] = { 32, 64, 128, 256, 512, 1024, 2048, 4096 };
+
 struct mcp3911 {
 	struct spi_device *spi;
 	struct mutex lock;
 	struct regulator *vref;
 	struct clk *clki;
 	u32 dev_addr;
+	struct iio_trigger *trig;
+	struct {
+		u32 channels[MCP3911_NUM_CHANNELS];
+		s64 ts __aligned(8);
+	} scan;
+
+	u8 tx_buf __aligned(IIO_DMA_MINALIGN);
+	u8 rx_buf[MCP3911_NUM_CHANNELS * 3];
 };
 
 static int mcp3911_read(struct mcp3911 *adc, u8 reg, u32 *val, u8 len)
@@ -65,8 +90,8 @@ static int mcp3911_read(struct mcp3911 *adc, u8 reg, u32 *val, u8 len)
 
 	be32_to_cpus(val);
 	*val >>= ((4 - len) * 8);
-	dev_dbg(&adc->spi->dev, "reading 0x%x from register 0x%x\n", *val,
-		reg >> 1);
+	dev_dbg(&adc->spi->dev, "reading 0x%x from register 0x%lx\n", *val,
+		FIELD_GET(MCP3911_REG_MASK, reg));
 	return ret;
 }
 
@@ -96,6 +121,36 @@ static int mcp3911_update(struct mcp3911 *adc, u8 reg, u32 mask,
 	return mcp3911_write(adc, reg, val, len);
 }
 
+static int mcp3911_write_raw_get_fmt(struct iio_dev *indio_dev,
+					struct iio_chan_spec const *chan,
+					long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		return IIO_VAL_INT;
+	default:
+		return IIO_VAL_INT_PLUS_NANO;
+	}
+}
+
+static int mcp3911_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*type = IIO_VAL_INT;
+		*vals = mcp3911_osr_table;
+		*length = ARRAY_SIZE(mcp3911_osr_table);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
 static int mcp3911_read_raw(struct iio_dev *indio_dev,
 			    struct iio_chan_spec const *channel, int *val,
 			    int *val2, long mask)
@@ -111,6 +166,8 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev,
 		if (ret)
 			goto out;
 
+		*val = sign_extend32(*val, 23);
+
 		ret = IIO_VAL_INT;
 		break;
 
@@ -122,6 +179,15 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev,
 
 		ret = IIO_VAL_INT;
 		break;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		ret = mcp3911_read(adc, MCP3911_REG_CONFIG, val, 2);
+		if (ret)
+			goto out;
+
+		*val = FIELD_GET(MCP3911_CONFIG_OSR, *val);
+		*val = 32 << *val;
+		ret = IIO_VAL_INT;
+		break;
 
 	case IIO_CHAN_INFO_SCALE:
 		if (adc->vref) {
@@ -135,11 +201,18 @@ static int mcp3911_read_raw(struct iio_dev *indio_dev,
 
 			*val = ret / 1000;
 		} else {
-			*val = MCP3911_INT_VREF_UV;
+			*val = MCP3911_INT_VREF_MV;
 		}
 
-		*val2 = 24;
-		ret = IIO_VAL_FRACTIONAL_LOG2;
+		/*
+		 * For 24bit Conversion
+		 * Raw = ((Voltage)/(Vref) * 2^23 * Gain * 1.5
+		 * Voltage = Raw * (Vref)/(2^23 * Gain * 1.5)
+		 */
+
+		/* val2 = (2^23 * 1.5) */
+		*val2 = 12582912;
+		ret = IIO_VAL_FRACTIONAL;
 		break;
 	}
 
@@ -174,6 +247,17 @@ static int mcp3911_write_raw(struct iio_dev *indio_dev,
 				MCP3911_STATUSCOM_EN_OFFCAL,
 				MCP3911_STATUSCOM_EN_OFFCAL, 2);
 		break;
+
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		for (int i = 0; i < ARRAY_SIZE(mcp3911_osr_table); i++) {
+			if (val == mcp3911_osr_table[i]) {
+				val = FIELD_PREP(MCP3911_CONFIG_OSR, i);
+				ret = mcp3911_update(adc, MCP3911_REG_CONFIG, MCP3911_CONFIG_OSR,
+						val, 2);
+				break;
+			}
+		}
+		break;
 	}
 
 out:
@@ -185,27 +269,90 @@ out:
 		.type = IIO_VOLTAGE,				\
 		.indexed = 1,					\
 		.channel = idx,					\
+		.scan_index = idx,				\
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO), \
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
 			BIT(IIO_CHAN_INFO_OFFSET) |		\
 			BIT(IIO_CHAN_INFO_SCALE),		\
+		.info_mask_shared_by_type_available =		\
+			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),	\
+		.scan_type = {					\
+			.sign = 's',				\
+			.realbits = 24,				\
+			.storagebits = 32,			\
+			.endianness = IIO_BE,			\
+		},						\
 }
 
 static const struct iio_chan_spec mcp3911_channels[] = {
 	MCP3911_CHAN(0),
 	MCP3911_CHAN(1),
+	IIO_CHAN_SOFT_TIMESTAMP(2),
 };
 
+static irqreturn_t mcp3911_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct mcp3911 *adc = iio_priv(indio_dev);
+	struct spi_transfer xfer[] = {
+		{
+			.tx_buf = &adc->tx_buf,
+			.len = 1,
+		}, {
+			.rx_buf = adc->rx_buf,
+			.len = sizeof(adc->rx_buf),
+		},
+	};
+	int scan_index;
+	int i = 0;
+	int ret;
+
+	mutex_lock(&adc->lock);
+	adc->tx_buf = MCP3911_REG_READ(MCP3911_CHANNEL(0), adc->dev_addr);
+	ret = spi_sync_transfer(adc->spi, xfer, ARRAY_SIZE(xfer));
+	if (ret < 0) {
+		dev_warn(&adc->spi->dev,
+				"failed to get conversion data\n");
+		goto out;
+	}
+
+	for_each_set_bit(scan_index, indio_dev->active_scan_mask, indio_dev->masklength) {
+		const struct iio_chan_spec *scan_chan = &indio_dev->channels[scan_index];
+
+		adc->scan.channels[i] = get_unaligned_be24(&adc->rx_buf[scan_chan->channel * 3]);
+		i++;
+	}
+	iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
+					   iio_get_time_ns(indio_dev));
+out:
+	mutex_unlock(&adc->lock);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
 static const struct iio_info mcp3911_info = {
 	.read_raw = mcp3911_read_raw,
 	.write_raw = mcp3911_write_raw,
+	.read_avail = mcp3911_read_avail,
+	.write_raw_get_fmt = mcp3911_write_raw_get_fmt,
 };
 
-static int mcp3911_config(struct mcp3911 *adc, struct device_node *of_node)
+static int mcp3911_config(struct mcp3911 *adc)
 {
-	u32 configreg;
+	struct device *dev = &adc->spi->dev;
+	u32 regval;
 	int ret;
 
-	of_property_read_u32(of_node, "device-addr", &adc->dev_addr);
+	ret = device_property_read_u32(dev, "microchip,device-addr", &adc->dev_addr);
+
+	/*
+	 * Fallback to "device-addr" due to historical mismatch between
+	 * dt-bindings and implementation
+	 */
+	if (ret)
+		device_property_read_u32(dev, "device-addr", &adc->dev_addr);
 	if (adc->dev_addr > 3) {
 		dev_err(&adc->spi->dev,
 			"invalid device address (%i). Must be in range 0-3.\n",
@@ -214,31 +361,67 @@ static int mcp3911_config(struct mcp3911 *adc, struct device_node *of_node)
 	}
 	dev_dbg(&adc->spi->dev, "use device address %i\n", adc->dev_addr);
 
-	ret = mcp3911_read(adc, MCP3911_REG_CONFIG, &configreg, 2);
+	ret = mcp3911_read(adc, MCP3911_REG_CONFIG, &regval, 2);
 	if (ret)
 		return ret;
 
+	regval &= ~MCP3911_CONFIG_VREFEXT;
 	if (adc->vref) {
 		dev_dbg(&adc->spi->dev, "use external voltage reference\n");
-		configreg |= MCP3911_CONFIG_VREFEXT;
+		regval |= FIELD_PREP(MCP3911_CONFIG_VREFEXT, 1);
 	} else {
 		dev_dbg(&adc->spi->dev,
 			"use internal voltage reference (1.2V)\n");
-		configreg &= ~MCP3911_CONFIG_VREFEXT;
+		regval |= FIELD_PREP(MCP3911_CONFIG_VREFEXT, 0);
 	}
 
+	regval &= ~MCP3911_CONFIG_CLKEXT;
 	if (adc->clki) {
 		dev_dbg(&adc->spi->dev, "use external clock as clocksource\n");
-		configreg |= MCP3911_CONFIG_CLKEXT;
+		regval |= FIELD_PREP(MCP3911_CONFIG_CLKEXT, 1);
 	} else {
 		dev_dbg(&adc->spi->dev,
 			"use crystal oscillator as clocksource\n");
-		configreg &= ~MCP3911_CONFIG_CLKEXT;
+		regval |= FIELD_PREP(MCP3911_CONFIG_CLKEXT, 0);
 	}
 
-	return  mcp3911_write(adc, MCP3911_REG_CONFIG, configreg, 2);
+	ret = mcp3911_write(adc, MCP3911_REG_CONFIG, regval, 2);
+	if (ret)
+		return ret;
+
+	ret = mcp3911_read(adc, MCP3911_REG_STATUSCOM, &regval, 2);
+	if (ret)
+		return ret;
+
+	/* Address counter incremented, cycle through register types */
+	regval &= ~MCP3911_STATUSCOM_READ;
+	regval |= FIELD_PREP(MCP3911_STATUSCOM_READ, 0x02);
+
+	return  mcp3911_write(adc, MCP3911_REG_STATUSCOM, regval, 2);
+}
+
+static void mcp3911_cleanup_regulator(void *vref)
+{
+	regulator_disable(vref);
+}
+
+static int mcp3911_set_trigger_state(struct iio_trigger *trig, bool enable)
+{
+	struct mcp3911 *adc = iio_trigger_get_drvdata(trig);
+
+	if (enable)
+		enable_irq(adc->spi->irq);
+	else
+		disable_irq(adc->spi->irq);
+
+	return 0;
 }
 
+static const struct iio_trigger_ops mcp3911_trigger_ops = {
+	.validate_device = iio_trigger_validate_own_device,
+	.set_trigger_state = mcp3911_set_trigger_state,
+};
+
 static int mcp3911_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -267,9 +450,14 @@ static int mcp3911_probe(struct spi_device *spi)
 		ret = regulator_enable(adc->vref);
 		if (ret)
 			return ret;
+
+		ret = devm_add_action_or_reset(&spi->dev,
+				mcp3911_cleanup_regulator, adc->vref);
+		if (ret)
+			return ret;
 	}
 
-	adc->clki = devm_clk_get(&adc->spi->dev, NULL);
+	adc->clki = devm_clk_get_enabled(&adc->spi->dev, NULL);
 	if (IS_ERR(adc->clki)) {
 		if (PTR_ERR(adc->clki) == -ENOENT) {
 			adc->clki = NULL;
@@ -277,24 +465,23 @@ static int mcp3911_probe(struct spi_device *spi)
 			dev_err(&adc->spi->dev,
 				"failed to get adc clk (%ld)\n",
 				PTR_ERR(adc->clki));
-			ret = PTR_ERR(adc->clki);
-			goto reg_disable;
-		}
-	} else {
-		ret = clk_prepare_enable(adc->clki);
-		if (ret < 0) {
-			dev_err(&adc->spi->dev,
-				"Failed to enable clki: %d\n", ret);
-			goto reg_disable;
+			return PTR_ERR(adc->clki);
 		}
 	}
 
-	ret = mcp3911_config(adc, spi->dev.of_node);
+	ret = mcp3911_config(adc);
+	if (ret)
+		return ret;
+
+	if (device_property_read_bool(&adc->spi->dev, "microchip,data-ready-hiz"))
+		ret = mcp3911_update(adc, MCP3911_REG_STATUSCOM, MCP3911_STATUSCOM_DRHIZ,
+				0, 2);
+	else
+		ret = mcp3911_update(adc, MCP3911_REG_STATUSCOM, MCP3911_STATUSCOM_DRHIZ,
+				MCP3911_STATUSCOM_DRHIZ, 2);
 	if (ret)
-		goto clk_disable;
+		return ret;
 
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &mcp3911_info;
@@ -305,33 +492,38 @@ static int mcp3911_probe(struct spi_device *spi)
 
 	mutex_init(&adc->lock);
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto clk_disable;
-
-	return ret;
-
-clk_disable:
-	clk_disable_unprepare(adc->clki);
-reg_disable:
-	if (adc->vref)
-		regulator_disable(adc->vref);
-
-	return ret;
-}
+	if (spi->irq > 0) {
+		adc->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",
+				indio_dev->name,
+				iio_device_id(indio_dev));
+		if (!adc->trig)
+			return -ENOMEM;
 
-static int mcp3911_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct mcp3911 *adc = iio_priv(indio_dev);
+		adc->trig->ops = &mcp3911_trigger_ops;
+		iio_trigger_set_drvdata(adc->trig, adc);
+		ret = devm_iio_trigger_register(&spi->dev, adc->trig);
+		if (ret)
+			return ret;
 
-	iio_device_unregister(indio_dev);
+		/*
+		 * The device generates interrupts as long as it is powered up.
+		 * Some platforms might not allow the option to power it down so
+		 * don't enable the interrupt to avoid extra load on the system.
+		 */
+		ret = devm_request_irq(&spi->dev, spi->irq,
+				&iio_trigger_generic_data_rdy_poll, IRQF_NO_AUTOEN | IRQF_ONESHOT,
+				indio_dev->name, adc->trig);
+		if (ret)
+			return ret;
+	}
 
-	clk_disable_unprepare(adc->clki);
-	if (adc->vref)
-		regulator_disable(adc->vref);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+			NULL,
+			mcp3911_trigger_handler, NULL);
+	if (ret)
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&adc->spi->dev, indio_dev);
 }
 
 static const struct of_device_id mcp3911_dt_ids[] = {
@@ -352,7 +544,6 @@ static struct spi_driver mcp3911_driver = {
 		.of_match_table = mcp3911_dt_ids,
 	},
 	.probe = mcp3911_probe,
-	.remove = mcp3911_remove,
 	.id_table = mcp3911_id,
 };
 module_spi_driver(mcp3911_driver);
diff --git a/drivers/iio/adc/men_z188_adc.c b/drivers/iio/adc/men_z188_adc.c
index 196c8226381e..adc5ceaef8c9 100644
--- a/drivers/iio/adc/men_z188_adc.c
+++ b/drivers/iio/adc/men_z188_adc.c
@@ -103,6 +103,7 @@ static int men_z188_probe(struct mcb_device *dev,
 	struct z188_adc *adc;
 	struct iio_dev *indio_dev;
 	struct resource *mem;
+	int ret;
 
 	indio_dev = devm_iio_device_alloc(&dev->dev, sizeof(struct z188_adc));
 	if (!indio_dev)
@@ -110,7 +111,6 @@ static int men_z188_probe(struct mcb_device *dev,
 
 	adc = iio_priv(indio_dev);
 	indio_dev->name = "z188-adc";
-	indio_dev->dev.parent = &dev->dev;
 	indio_dev->info = &z188_adc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = z188_adc_iio_channels;
@@ -129,8 +129,14 @@ static int men_z188_probe(struct mcb_device *dev,
 	adc->mem = mem;
 	mcb_set_drvdata(dev, indio_dev);
 
-	return iio_device_register(indio_dev);
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto err_unmap;
+
+	return 0;
 
+err_unmap:
+	iounmap(adc->base);
 err:
 	mcb_release_mem(mem);
 	return -ENXIO;
diff --git a/drivers/iio/adc/meson_saradc.c b/drivers/iio/adc/meson_saradc.c
index 22a470db9ef8..1a68b099d323 100644
--- a/drivers/iio/adc/meson_saradc.c
+++ b/drivers/iio/adc/meson_saradc.c
@@ -322,22 +322,17 @@ static int meson_sar_adc_calib_val(struct iio_dev *indio_dev, int val)
 static int meson_sar_adc_wait_busy_clear(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
-	int regval, timeout = 10000;
+	int val;
 
 	/*
 	 * NOTE: we need a small delay before reading the status, otherwise
 	 * the sample engine may not have started internally (which would
 	 * seem to us that sampling is already finished).
 	 */
-	do {
-		udelay(1);
-		regmap_read(priv->regmap, MESON_SAR_ADC_REG0, &regval);
-	} while (FIELD_GET(MESON_SAR_ADC_REG0_BUSY_MASK, regval) && timeout--);
-
-	if (timeout < 0)
-		return -ETIMEDOUT;
-
-	return 0;
+	udelay(1);
+	return regmap_read_poll_timeout_atomic(priv->regmap, MESON_SAR_ADC_REG0, val,
+					       !FIELD_GET(MESON_SAR_ADC_REG0_BUSY_MASK, val),
+					       1, 10000);
 }
 
 static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev,
@@ -345,24 +340,23 @@ static int meson_sar_adc_read_raw_sample(struct iio_dev *indio_dev,
 					 int *val)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
 	int regval, fifo_chan, fifo_val, count;
 
-	if(!wait_for_completion_timeout(&priv->done,
+	if (!wait_for_completion_timeout(&priv->done,
 				msecs_to_jiffies(MESON_SAR_ADC_TIMEOUT)))
 		return -ETIMEDOUT;
 
 	count = meson_sar_adc_get_fifo_count(indio_dev);
 	if (count != 1) {
-		dev_err(&indio_dev->dev,
-			"ADC FIFO has %d element(s) instead of one\n", count);
+		dev_err(dev, "ADC FIFO has %d element(s) instead of one\n", count);
 		return -EINVAL;
 	}
 
 	regmap_read(priv->regmap, MESON_SAR_ADC_FIFO_RD, &regval);
 	fifo_chan = FIELD_GET(MESON_SAR_ADC_FIFO_RD_CHAN_ID_MASK, regval);
 	if (fifo_chan != chan->address) {
-		dev_err(&indio_dev->dev,
-			"ADC FIFO entry belongs to channel %d instead of %lu\n",
+		dev_err(dev, "ADC FIFO entry belongs to channel %d instead of %lu\n",
 			fifo_chan, chan->address);
 		return -EINVAL;
 	}
@@ -490,28 +484,28 @@ static void meson_sar_adc_stop_sample_engine(struct iio_dev *indio_dev)
 static int meson_sar_adc_lock(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
-	int val, timeout = 10000;
+	int val, ret;
 
 	mutex_lock(&indio_dev->mlock);
 
 	if (priv->param->has_bl30_integration) {
 		/* prevent BL30 from using the SAR ADC while we are using it */
 		regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELAY,
-				MESON_SAR_ADC_DELAY_KERNEL_BUSY,
-				MESON_SAR_ADC_DELAY_KERNEL_BUSY);
+				   MESON_SAR_ADC_DELAY_KERNEL_BUSY,
+				   MESON_SAR_ADC_DELAY_KERNEL_BUSY);
+
+		udelay(1);
 
 		/*
 		 * wait until BL30 releases it's lock (so we can use the SAR
 		 * ADC)
 		 */
-		do {
-			udelay(1);
-			regmap_read(priv->regmap, MESON_SAR_ADC_DELAY, &val);
-		} while (val & MESON_SAR_ADC_DELAY_BL30_BUSY && timeout--);
-
-		if (timeout < 0) {
+		ret = regmap_read_poll_timeout_atomic(priv->regmap, MESON_SAR_ADC_DELAY, val,
+						      !(val & MESON_SAR_ADC_DELAY_BL30_BUSY),
+						      1, 10000);
+		if (ret) {
 			mutex_unlock(&indio_dev->mlock);
-			return -ETIMEDOUT;
+			return ret;
 		}
 	}
 
@@ -525,7 +519,7 @@ static void meson_sar_adc_unlock(struct iio_dev *indio_dev)
 	if (priv->param->has_bl30_integration)
 		/* allow BL30 to use the SAR ADC again */
 		regmap_update_bits(priv->regmap, MESON_SAR_ADC_DELAY,
-				MESON_SAR_ADC_DELAY_KERNEL_BUSY, 0);
+				   MESON_SAR_ADC_DELAY_KERNEL_BUSY, 0);
 
 	mutex_unlock(&indio_dev->mlock);
 }
@@ -550,6 +544,7 @@ static int meson_sar_adc_get_sample(struct iio_dev *indio_dev,
 				    int *val)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
 	int ret;
 
 	if (chan->type == IIO_TEMP && !priv->temperature_sensor_calibrated)
@@ -573,8 +568,7 @@ static int meson_sar_adc_get_sample(struct iio_dev *indio_dev,
 	meson_sar_adc_unlock(indio_dev);
 
 	if (ret) {
-		dev_warn(indio_dev->dev.parent,
-			 "failed to read sample for channel %lu: %d\n",
+		dev_warn(dev, "failed to read sample for channel %lu: %d\n",
 			 chan->address, ret);
 		return ret;
 	}
@@ -587,27 +581,24 @@ static int meson_sar_adc_iio_info_read_raw(struct iio_dev *indio_dev,
 					   int *val, int *val2, long mask)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
 	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
 		return meson_sar_adc_get_sample(indio_dev, chan, NO_AVERAGING,
 						ONE_SAMPLE, val);
-		break;
 
 	case IIO_CHAN_INFO_AVERAGE_RAW:
 		return meson_sar_adc_get_sample(indio_dev, chan,
 						MEAN_AVERAGING, EIGHT_SAMPLES,
 						val);
-		break;
 
 	case IIO_CHAN_INFO_SCALE:
 		if (chan->type == IIO_VOLTAGE) {
 			ret = regulator_get_voltage(priv->vref);
 			if (ret < 0) {
-				dev_err(indio_dev->dev.parent,
-					"failed to get vref voltage: %d\n",
-					ret);
+				dev_err(dev, "failed to get vref voltage: %d\n", ret);
 				return ret;
 			}
 
@@ -652,11 +643,11 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev,
 				  void __iomem *base)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
 	struct clk_init_data init;
 	const char *clk_parents[1];
 
-	init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_div",
-				   dev_name(indio_dev->dev.parent));
+	init.name = devm_kasprintf(dev, GFP_KERNEL, "%s#adc_div", dev_name(dev));
 	if (!init.name)
 		return -ENOMEM;
 
@@ -672,13 +663,11 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev,
 	priv->clk_div.hw.init = &init;
 	priv->clk_div.flags = 0;
 
-	priv->adc_div_clk = devm_clk_register(&indio_dev->dev,
-					      &priv->clk_div.hw);
+	priv->adc_div_clk = devm_clk_register(dev, &priv->clk_div.hw);
 	if (WARN_ON(IS_ERR(priv->adc_div_clk)))
 		return PTR_ERR(priv->adc_div_clk);
 
-	init.name = devm_kasprintf(&indio_dev->dev, GFP_KERNEL, "%s#adc_en",
-				   dev_name(indio_dev->dev.parent));
+	init.name = devm_kasprintf(dev, GFP_KERNEL, "%s#adc_en", dev_name(dev));
 	if (!init.name)
 		return -ENOMEM;
 
@@ -692,7 +681,7 @@ static int meson_sar_adc_clk_init(struct iio_dev *indio_dev,
 	priv->clk_gate.bit_idx = __ffs(MESON_SAR_ADC_REG3_CLK_EN);
 	priv->clk_gate.hw.init = &init;
 
-	priv->adc_clk = devm_clk_register(&indio_dev->dev, &priv->clk_gate.hw);
+	priv->adc_clk = devm_clk_register(dev, &priv->clk_gate.hw);
 	if (WARN_ON(IS_ERR(priv->adc_clk)))
 		return PTR_ERR(priv->adc_clk);
 
@@ -703,12 +692,12 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
 	u8 *buf, trimming_bits, trimming_mask, upper_adc_val;
+	struct device *dev = indio_dev->dev.parent;
 	struct nvmem_cell *temperature_calib;
 	size_t read_len;
 	int ret;
 
-	temperature_calib = devm_nvmem_cell_get(&indio_dev->dev,
-						"temperature_calib");
+	temperature_calib = devm_nvmem_cell_get(dev, "temperature_calib");
 	if (IS_ERR(temperature_calib)) {
 		ret = PTR_ERR(temperature_calib);
 
@@ -719,33 +708,21 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev)
 		if (ret == -ENODEV)
 			return 0;
 
-		if (ret != -EPROBE_DEFER)
-			dev_err(indio_dev->dev.parent,
-				"failed to get temperature_calib cell\n");
-
-		return ret;
+		return dev_err_probe(dev, ret, "failed to get temperature_calib cell\n");
 	}
 
-	priv->tsc_regmap =
-		syscon_regmap_lookup_by_phandle(indio_dev->dev.parent->of_node,
-						"amlogic,hhi-sysctrl");
-	if (IS_ERR(priv->tsc_regmap)) {
-		dev_err(indio_dev->dev.parent,
-			"failed to get amlogic,hhi-sysctrl regmap\n");
-		return PTR_ERR(priv->tsc_regmap);
-	}
+	priv->tsc_regmap = syscon_regmap_lookup_by_phandle(dev->of_node, "amlogic,hhi-sysctrl");
+	if (IS_ERR(priv->tsc_regmap))
+		return dev_err_probe(dev, PTR_ERR(priv->tsc_regmap),
+				     "failed to get amlogic,hhi-sysctrl regmap\n");
 
 	read_len = MESON_SAR_ADC_EFUSE_BYTES;
 	buf = nvmem_cell_read(temperature_calib, &read_len);
-	if (IS_ERR(buf)) {
-		dev_err(indio_dev->dev.parent,
-			"failed to read temperature_calib cell\n");
-		return PTR_ERR(buf);
-	} else if (read_len != MESON_SAR_ADC_EFUSE_BYTES) {
+	if (IS_ERR(buf))
+		return dev_err_probe(dev, PTR_ERR(buf), "failed to read temperature_calib cell\n");
+	if (read_len != MESON_SAR_ADC_EFUSE_BYTES) {
 		kfree(buf);
-		dev_err(indio_dev->dev.parent,
-			"invalid read size of temperature_calib cell\n");
-		return -EINVAL;
+		return dev_err_probe(dev, -EINVAL, "invalid read size of temperature_calib cell\n");
 	}
 
 	trimming_bits = priv->param->temperature_trimming_bits;
@@ -770,6 +747,7 @@ static int meson_sar_adc_temp_sensor_init(struct iio_dev *indio_dev)
 static int meson_sar_adc_init(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
 	int regval, i, ret;
 
 	/*
@@ -796,7 +774,7 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev)
 	 * on the vendor driver), which we don't support at the moment.
 	 */
 	regmap_update_bits(priv->regmap, MESON_SAR_ADC_REG0,
-			MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL, 0);
+			   MESON_SAR_ADC_REG0_ADC_TEMP_SEN_SEL, 0);
 
 	/* disable all channels by default */
 	regmap_write(priv->regmap, MESON_SAR_ADC_CHAN_LIST, 0x0);
@@ -893,18 +871,12 @@ static int meson_sar_adc_init(struct iio_dev *indio_dev)
 	}
 
 	ret = clk_set_parent(priv->adc_sel_clk, priv->clkin);
-	if (ret) {
-		dev_err(indio_dev->dev.parent,
-			"failed to set adc parent to clkin\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to set adc parent to clkin\n");
 
 	ret = clk_set_rate(priv->adc_clk, priv->param->clock_rate);
-	if (ret) {
-		dev_err(indio_dev->dev.parent,
-			"failed to set adc clock rate\n");
-		return ret;
-	}
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to set adc clock rate\n");
 
 	return 0;
 }
@@ -927,6 +899,7 @@ static void meson_sar_adc_set_bandgap(struct iio_dev *indio_dev, bool on_off)
 static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev)
 {
 	struct meson_sar_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
 	int ret;
 	u32 regval;
 
@@ -936,14 +909,13 @@ static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev)
 
 	ret = regulator_enable(priv->vref);
 	if (ret < 0) {
-		dev_err(indio_dev->dev.parent,
-			"failed to enable vref regulator\n");
+		dev_err(dev, "failed to enable vref regulator\n");
 		goto err_vref;
 	}
 
 	ret = clk_prepare_enable(priv->core_clk);
 	if (ret) {
-		dev_err(indio_dev->dev.parent, "failed to enable core clk\n");
+		dev_err(dev, "failed to enable core clk\n");
 		goto err_core_clk;
 	}
 
@@ -961,7 +933,7 @@ static int meson_sar_adc_hw_enable(struct iio_dev *indio_dev)
 
 	ret = clk_prepare_enable(priv->adc_clk);
 	if (ret) {
-		dev_err(indio_dev->dev.parent, "failed to enable adc clk\n");
+		dev_err(dev, "failed to enable adc clk\n");
 		goto err_adc_clk;
 	}
 
@@ -1109,6 +1081,14 @@ static const struct meson_sar_adc_param meson_sar_adc_gxl_param = {
 	.resolution = 12,
 };
 
+static const struct meson_sar_adc_param meson_sar_adc_g12a_param = {
+	.has_bl30_integration = false,
+	.clock_rate = 1200000,
+	.bandgap_reg = MESON_SAR_ADC_REG11,
+	.regmap_config = &meson_sar_adc_regmap_config_gxbb,
+	.resolution = 12,
+};
+
 static const struct meson_sar_adc_data meson_sar_adc_meson8_data = {
 	.param = &meson_sar_adc_meson8_param,
 	.name = "meson-meson8-saradc",
@@ -1145,7 +1125,7 @@ static const struct meson_sar_adc_data meson_sar_adc_axg_data = {
 };
 
 static const struct meson_sar_adc_data meson_sar_adc_g12a_data = {
-	.param = &meson_sar_adc_gxl_param,
+	.param = &meson_sar_adc_g12a_param,
 	.name = "meson-g12a-saradc",
 };
 
@@ -1153,16 +1133,13 @@ static const struct of_device_id meson_sar_adc_of_match[] = {
 	{
 		.compatible = "amlogic,meson8-saradc",
 		.data = &meson_sar_adc_meson8_data,
-	},
-	{
+	}, {
 		.compatible = "amlogic,meson8b-saradc",
 		.data = &meson_sar_adc_meson8b_data,
-	},
-	{
+	}, {
 		.compatible = "amlogic,meson8m2-saradc",
 		.data = &meson_sar_adc_meson8m2_data,
-	},
-	{
+	}, {
 		.compatible = "amlogic,meson-gxbb-saradc",
 		.data = &meson_sar_adc_gxbb_data,
 	}, {
@@ -1178,7 +1155,7 @@ static const struct of_device_id meson_sar_adc_of_match[] = {
 		.compatible = "amlogic,meson-g12a-saradc",
 		.data = &meson_sar_adc_g12a_data,
 	},
-	{},
+	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, meson_sar_adc_of_match);
 
@@ -1186,30 +1163,25 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 {
 	const struct meson_sar_adc_data *match_data;
 	struct meson_sar_adc_priv *priv;
+	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	void __iomem *base;
 	int irq, ret;
 
-	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*priv));
-	if (!indio_dev) {
-		dev_err(&pdev->dev, "failed allocating iio device\n");
-		return -ENOMEM;
-	}
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
+	if (!indio_dev)
+		return dev_err_probe(dev, -ENOMEM, "failed allocating iio device\n");
 
 	priv = iio_priv(indio_dev);
 	init_completion(&priv->done);
 
-	match_data = of_device_get_match_data(&pdev->dev);
-	if (!match_data) {
-		dev_err(&pdev->dev, "failed to get match data\n");
-		return -ENODEV;
-	}
+	match_data = of_device_get_match_data(dev);
+	if (!match_data)
+		return dev_err_probe(dev, -ENODEV, "failed to get match data\n");
 
 	priv->param = match_data->param;
 
 	indio_dev->name = match_data->name;
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &meson_sar_adc_iio_info;
 
@@ -1217,51 +1189,33 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
-	priv->regmap = devm_regmap_init_mmio(&pdev->dev, base,
-					     priv->param->regmap_config);
+	priv->regmap = devm_regmap_init_mmio(dev, base, priv->param->regmap_config);
 	if (IS_ERR(priv->regmap))
 		return PTR_ERR(priv->regmap);
 
-	irq = irq_of_parse_and_map(pdev->dev.of_node, 0);
+	irq = irq_of_parse_and_map(dev->of_node, 0);
 	if (!irq)
 		return -EINVAL;
 
-	ret = devm_request_irq(&pdev->dev, irq, meson_sar_adc_irq, IRQF_SHARED,
-			       dev_name(&pdev->dev), indio_dev);
+	ret = devm_request_irq(dev, irq, meson_sar_adc_irq, IRQF_SHARED, dev_name(dev), indio_dev);
 	if (ret)
 		return ret;
 
-	priv->clkin = devm_clk_get(&pdev->dev, "clkin");
-	if (IS_ERR(priv->clkin)) {
-		dev_err(&pdev->dev, "failed to get clkin\n");
-		return PTR_ERR(priv->clkin);
-	}
+	priv->clkin = devm_clk_get(dev, "clkin");
+	if (IS_ERR(priv->clkin))
+		return dev_err_probe(dev, PTR_ERR(priv->clkin), "failed to get clkin\n");
 
-	priv->core_clk = devm_clk_get(&pdev->dev, "core");
-	if (IS_ERR(priv->core_clk)) {
-		dev_err(&pdev->dev, "failed to get core clk\n");
-		return PTR_ERR(priv->core_clk);
-	}
+	priv->core_clk = devm_clk_get(dev, "core");
+	if (IS_ERR(priv->core_clk))
+		return dev_err_probe(dev, PTR_ERR(priv->core_clk), "failed to get core clk\n");
 
-	priv->adc_clk = devm_clk_get(&pdev->dev, "adc_clk");
-	if (IS_ERR(priv->adc_clk)) {
-		if (PTR_ERR(priv->adc_clk) == -ENOENT) {
-			priv->adc_clk = NULL;
-		} else {
-			dev_err(&pdev->dev, "failed to get adc clk\n");
-			return PTR_ERR(priv->adc_clk);
-		}
-	}
+	priv->adc_clk = devm_clk_get_optional(dev, "adc_clk");
+	if (IS_ERR(priv->adc_clk))
+		return dev_err_probe(dev, PTR_ERR(priv->adc_clk), "failed to get adc clk\n");
 
-	priv->adc_sel_clk = devm_clk_get(&pdev->dev, "adc_sel");
-	if (IS_ERR(priv->adc_sel_clk)) {
-		if (PTR_ERR(priv->adc_sel_clk) == -ENOENT) {
-			priv->adc_sel_clk = NULL;
-		} else {
-			dev_err(&pdev->dev, "failed to get adc_sel clk\n");
-			return PTR_ERR(priv->adc_sel_clk);
-		}
-	}
+	priv->adc_sel_clk = devm_clk_get_optional(dev, "adc_sel");
+	if (IS_ERR(priv->adc_sel_clk))
+		return dev_err_probe(dev, PTR_ERR(priv->adc_sel_clk), "failed to get adc_sel clk\n");
 
 	/* on pre-GXBB SoCs the SAR ADC itself provides the ADC clock: */
 	if (!priv->adc_clk) {
@@ -1270,11 +1224,9 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 			return ret;
 	}
 
-	priv->vref = devm_regulator_get(&pdev->dev, "vref");
-	if (IS_ERR(priv->vref)) {
-		dev_err(&pdev->dev, "failed to get vref regulator\n");
-		return PTR_ERR(priv->vref);
-	}
+	priv->vref = devm_regulator_get(dev, "vref");
+	if (IS_ERR(priv->vref))
+		return dev_err_probe(dev, PTR_ERR(priv->vref), "failed to get vref regulator\n");
 
 	priv->calibscale = MILLION;
 
@@ -1304,7 +1256,7 @@ static int meson_sar_adc_probe(struct platform_device *pdev)
 
 	ret = meson_sar_adc_calib(indio_dev);
 	if (ret)
-		dev_warn(&pdev->dev, "calibration failed\n");
+		dev_warn(dev, "calibration failed\n");
 
 	platform_set_drvdata(pdev, indio_dev);
 
@@ -1329,22 +1281,22 @@ static int meson_sar_adc_remove(struct platform_device *pdev)
 	return meson_sar_adc_hw_disable(indio_dev);
 }
 
-static int __maybe_unused meson_sar_adc_suspend(struct device *dev)
+static int meson_sar_adc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 
 	return meson_sar_adc_hw_disable(indio_dev);
 }
 
-static int __maybe_unused meson_sar_adc_resume(struct device *dev)
+static int meson_sar_adc_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 
 	return meson_sar_adc_hw_enable(indio_dev);
 }
 
-static SIMPLE_DEV_PM_OPS(meson_sar_adc_pm_ops,
-			 meson_sar_adc_suspend, meson_sar_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(meson_sar_adc_pm_ops,
+				meson_sar_adc_suspend, meson_sar_adc_resume);
 
 static struct platform_driver meson_sar_adc_driver = {
 	.probe		= meson_sar_adc_probe,
@@ -1352,7 +1304,7 @@ static struct platform_driver meson_sar_adc_driver = {
 	.driver		= {
 		.name	= "meson-saradc",
 		.of_match_table = meson_sar_adc_of_match,
-		.pm = &meson_sar_adc_pm_ops,
+		.pm = pm_sleep_ptr(&meson_sar_adc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/mp2629_adc.c b/drivers/iio/adc/mp2629_adc.c
new file mode 100644
index 000000000000..30a31f185d08
--- /dev/null
+++ b/drivers/iio/adc/mp2629_adc.c
@@ -0,0 +1,208 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * MP2629 Driver for ADC
+ *
+ * Copyright 2020 Monolithic Power Systems, Inc
+ *
+ * Author: Saravanan Sekar <sravanhome@gmail.com>
+ */
+
+#include <linux/iio/driver.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/machine.h>
+#include <linux/mfd/mp2629.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define	MP2629_REG_ADC_CTRL		0x03
+#define	MP2629_REG_BATT_VOLT		0x0e
+#define	MP2629_REG_SYSTEM_VOLT		0x0f
+#define	MP2629_REG_INPUT_VOLT		0x11
+#define	MP2629_REG_BATT_CURRENT		0x12
+#define	MP2629_REG_INPUT_CURRENT	0x13
+
+#define	MP2629_ADC_START		BIT(7)
+#define	MP2629_ADC_CONTINUOUS		BIT(6)
+
+#define MP2629_MAP(_mp, _mpc) IIO_MAP(#_mp, "mp2629_charger", "mp2629-"_mpc)
+
+#define MP2629_ADC_CHAN(_ch, _type) {				\
+	.type = _type,						\
+	.indexed = 1,						\
+	.datasheet_name = #_ch,					\
+	.channel = MP2629_ ## _ch,				\
+	.address = MP2629_REG_ ## _ch,				\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+}
+
+struct mp2629_adc {
+	struct regmap *regmap;
+	struct device *dev;
+};
+
+static struct iio_chan_spec mp2629_channels[] = {
+	MP2629_ADC_CHAN(BATT_VOLT, IIO_VOLTAGE),
+	MP2629_ADC_CHAN(SYSTEM_VOLT, IIO_VOLTAGE),
+	MP2629_ADC_CHAN(INPUT_VOLT, IIO_VOLTAGE),
+	MP2629_ADC_CHAN(BATT_CURRENT, IIO_CURRENT),
+	MP2629_ADC_CHAN(INPUT_CURRENT, IIO_CURRENT)
+};
+
+static struct iio_map mp2629_adc_maps[] = {
+	MP2629_MAP(BATT_VOLT, "batt-volt"),
+	MP2629_MAP(SYSTEM_VOLT, "system-volt"),
+	MP2629_MAP(INPUT_VOLT, "input-volt"),
+	MP2629_MAP(BATT_CURRENT, "batt-current"),
+	MP2629_MAP(INPUT_CURRENT, "input-current")
+};
+
+static int mp2629_read_raw(struct iio_dev *indio_dev,
+			struct iio_chan_spec const *chan,
+			int *val, int *val2, long mask)
+{
+	struct mp2629_adc *info = iio_priv(indio_dev);
+	unsigned int rval;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = regmap_read(info->regmap, chan->address, &rval);
+		if (ret)
+			return ret;
+
+		if (chan->address == MP2629_INPUT_VOLT)
+			rval &= GENMASK(6, 0);
+		*val = rval;
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->channel) {
+		case MP2629_BATT_VOLT:
+		case MP2629_SYSTEM_VOLT:
+			*val = 20;
+			return IIO_VAL_INT;
+
+		case MP2629_INPUT_VOLT:
+			*val = 60;
+			return IIO_VAL_INT;
+
+		case MP2629_BATT_CURRENT:
+			*val = 175;
+			*val2 = 10;
+			return IIO_VAL_FRACTIONAL;
+
+		case MP2629_INPUT_CURRENT:
+			*val = 133;
+			*val2 = 10;
+			return IIO_VAL_FRACTIONAL;
+
+		default:
+			return -EINVAL;
+		}
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info mp2629_adc_info = {
+	.read_raw = &mp2629_read_raw,
+};
+
+static int mp2629_adc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct mp2629_data *ddata = dev_get_drvdata(dev->parent);
+	struct mp2629_adc *info;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*info));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	info = iio_priv(indio_dev);
+	info->regmap = ddata->regmap;
+	info->dev = dev;
+	platform_set_drvdata(pdev, indio_dev);
+
+	ret = regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL,
+				MP2629_ADC_START | MP2629_ADC_CONTINUOUS,
+				MP2629_ADC_START | MP2629_ADC_CONTINUOUS);
+	if (ret) {
+		dev_err(dev, "adc enable fail: %d\n", ret);
+		return ret;
+	}
+
+	ret = iio_map_array_register(indio_dev, mp2629_adc_maps);
+	if (ret) {
+		dev_err(dev, "IIO maps register fail: %d\n", ret);
+		goto fail_disable;
+	}
+
+	indio_dev->name = "mp2629-adc";
+	indio_dev->channels = mp2629_channels;
+	indio_dev->num_channels = ARRAY_SIZE(mp2629_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &mp2629_adc_info;
+
+	ret = iio_device_register(indio_dev);
+	if (ret) {
+		dev_err(dev, "IIO device register fail: %d\n", ret);
+		goto fail_map_unregister;
+	}
+
+	return 0;
+
+fail_map_unregister:
+	iio_map_array_unregister(indio_dev);
+
+fail_disable:
+	regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL,
+					 MP2629_ADC_CONTINUOUS, 0);
+	regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL,
+					 MP2629_ADC_START, 0);
+
+	return ret;
+}
+
+static int mp2629_adc_remove(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct mp2629_adc *info = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+
+	iio_map_array_unregister(indio_dev);
+
+	regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL,
+					 MP2629_ADC_CONTINUOUS, 0);
+	regmap_update_bits(info->regmap, MP2629_REG_ADC_CTRL,
+					 MP2629_ADC_START, 0);
+
+	return 0;
+}
+
+static const struct of_device_id mp2629_adc_of_match[] = {
+	{ .compatible = "mps,mp2629_adc"},
+	{}
+};
+MODULE_DEVICE_TABLE(of, mp2629_adc_of_match);
+
+static struct platform_driver mp2629_adc_driver = {
+	.driver = {
+		.name = "mp2629_adc",
+		.of_match_table = mp2629_adc_of_match,
+	},
+	.probe		= mp2629_adc_probe,
+	.remove		= mp2629_adc_remove,
+};
+module_platform_driver(mp2629_adc_driver);
+
+MODULE_AUTHOR("Saravanan Sekar <sravanhome@gmail.com>");
+MODULE_DESCRIPTION("MP2629 ADC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/mt6360-adc.c b/drivers/iio/adc/mt6360-adc.c
new file mode 100644
index 000000000000..3710473e526f
--- /dev/null
+++ b/drivers/iio/adc/mt6360-adc.c
@@ -0,0 +1,373 @@
+// SPDX-License-Identifier: GPL-2.0
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/irq.h>
+#include <linux/kernel.h>
+#include <linux/ktime.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include <asm/unaligned.h>
+
+#define MT6360_REG_PMUCHGCTRL3	0x313
+#define MT6360_REG_PMUADCCFG	0x356
+#define MT6360_REG_PMUADCIDLET	0x358
+#define MT6360_REG_PMUADCRPT1	0x35A
+
+/* PMUCHGCTRL3 0x313 */
+#define MT6360_AICR_MASK	GENMASK(7, 2)
+#define MT6360_AICR_SHFT	2
+#define MT6360_AICR_400MA	0x6
+/* PMUADCCFG 0x356 */
+#define MT6360_ADCEN_MASK	BIT(15)
+/* PMUADCRPT1 0x35A */
+#define MT6360_PREFERCH_MASK	GENMASK(7, 4)
+#define MT6360_PREFERCH_SHFT	4
+#define MT6360_RPTCH_MASK	GENMASK(3, 0)
+#define MT6360_NO_PREFER	15
+
+/* Time in ms */
+#define ADC_WAIT_TIME_MS	25
+#define ADC_CONV_TIMEOUT_MS	100
+#define ADC_LOOP_TIME_US	2000
+
+enum {
+	MT6360_CHAN_USBID = 0,
+	MT6360_CHAN_VBUSDIV5,
+	MT6360_CHAN_VBUSDIV2,
+	MT6360_CHAN_VSYS,
+	MT6360_CHAN_VBAT,
+	MT6360_CHAN_IBUS,
+	MT6360_CHAN_IBAT,
+	MT6360_CHAN_CHG_VDDP,
+	MT6360_CHAN_TEMP_JC,
+	MT6360_CHAN_VREF_TS,
+	MT6360_CHAN_TS,
+	MT6360_CHAN_MAX
+};
+
+struct mt6360_adc_data {
+	struct device *dev;
+	struct regmap *regmap;
+	/* Due to only one set of ADC control, this lock is used to prevent the race condition */
+	struct mutex adc_lock;
+	ktime_t last_off_timestamps[MT6360_CHAN_MAX];
+};
+
+static int mt6360_adc_read_channel(struct mt6360_adc_data *mad, int channel, int *val)
+{
+	__be16 adc_enable;
+	u8 rpt[3];
+	ktime_t predict_end_t, timeout;
+	unsigned int pre_wait_time;
+	int ret;
+
+	mutex_lock(&mad->adc_lock);
+
+	/* Select the preferred ADC channel */
+	ret = regmap_update_bits(mad->regmap, MT6360_REG_PMUADCRPT1, MT6360_PREFERCH_MASK,
+				 channel << MT6360_PREFERCH_SHFT);
+	if (ret)
+		goto out_adc_lock;
+
+	adc_enable = cpu_to_be16(MT6360_ADCEN_MASK | BIT(channel));
+	ret = regmap_raw_write(mad->regmap, MT6360_REG_PMUADCCFG, &adc_enable, sizeof(adc_enable));
+	if (ret)
+		goto out_adc_lock;
+
+	predict_end_t = ktime_add_ms(mad->last_off_timestamps[channel], 2 * ADC_WAIT_TIME_MS);
+
+	if (ktime_after(ktime_get(), predict_end_t))
+		pre_wait_time = ADC_WAIT_TIME_MS;
+	else
+		pre_wait_time = 3 * ADC_WAIT_TIME_MS;
+
+	if (msleep_interruptible(pre_wait_time)) {
+		ret = -ERESTARTSYS;
+		goto out_adc_conv;
+	}
+
+	timeout = ktime_add_ms(ktime_get(), ADC_CONV_TIMEOUT_MS);
+	while (true) {
+		ret = regmap_raw_read(mad->regmap, MT6360_REG_PMUADCRPT1, rpt, sizeof(rpt));
+		if (ret)
+			goto out_adc_conv;
+
+		/*
+		 * There are two functions, ZCV and TypeC OTP, running ADC VBAT and TS in
+		 * background, and ADC samples are taken on a fixed frequency no matter read the
+		 * previous one or not.
+		 * To avoid conflict, We set minimum time threshold after enable ADC and
+		 * check report channel is the same.
+		 * The worst case is run the same ADC twice and background function is also running,
+		 * ADC conversion sequence is desire channel before start ADC, background ADC,
+		 * desire channel after start ADC.
+		 * So the minimum correct data is three times of typical conversion time.
+		 */
+		if ((rpt[0] & MT6360_RPTCH_MASK) == channel)
+			break;
+
+		if (ktime_compare(ktime_get(), timeout) > 0) {
+			ret = -ETIMEDOUT;
+			goto out_adc_conv;
+		}
+
+		usleep_range(ADC_LOOP_TIME_US / 2, ADC_LOOP_TIME_US);
+	}
+
+	*val = rpt[1] << 8 | rpt[2];
+	ret = IIO_VAL_INT;
+
+out_adc_conv:
+	/* Only keep ADC enable */
+	adc_enable = cpu_to_be16(MT6360_ADCEN_MASK);
+	regmap_raw_write(mad->regmap, MT6360_REG_PMUADCCFG, &adc_enable, sizeof(adc_enable));
+	mad->last_off_timestamps[channel] = ktime_get();
+	/* Config prefer channel to NO_PREFER */
+	regmap_update_bits(mad->regmap, MT6360_REG_PMUADCRPT1, MT6360_PREFERCH_MASK,
+			   MT6360_NO_PREFER << MT6360_PREFERCH_SHFT);
+out_adc_lock:
+	mutex_unlock(&mad->adc_lock);
+
+	return ret;
+}
+
+static int mt6360_adc_read_scale(struct mt6360_adc_data *mad, int channel, int *val, int *val2)
+{
+	unsigned int regval;
+	int ret;
+
+	switch (channel) {
+	case MT6360_CHAN_USBID:
+	case MT6360_CHAN_VSYS:
+	case MT6360_CHAN_VBAT:
+	case MT6360_CHAN_CHG_VDDP:
+	case MT6360_CHAN_VREF_TS:
+	case MT6360_CHAN_TS:
+		*val = 1250;
+		return IIO_VAL_INT;
+	case MT6360_CHAN_VBUSDIV5:
+		*val = 6250;
+		return IIO_VAL_INT;
+	case MT6360_CHAN_VBUSDIV2:
+	case MT6360_CHAN_IBUS:
+	case MT6360_CHAN_IBAT:
+		*val = 2500;
+
+		if (channel == MT6360_CHAN_IBUS) {
+			/* IBUS will be affected by input current limit for the different Ron */
+			/* Check whether the config is <400mA or not */
+			ret = regmap_read(mad->regmap, MT6360_REG_PMUCHGCTRL3, &regval);
+			if (ret)
+				return ret;
+
+			regval = (regval & MT6360_AICR_MASK) >> MT6360_AICR_SHFT;
+			if (regval < MT6360_AICR_400MA)
+				*val = 1900;
+		}
+
+		return IIO_VAL_INT;
+	case MT6360_CHAN_TEMP_JC:
+		*val = 105;
+		*val2 = 100;
+		return IIO_VAL_FRACTIONAL;
+	}
+
+	return -EINVAL;
+}
+
+static int mt6360_adc_read_offset(struct mt6360_adc_data *mad, int channel, int *val)
+{
+	*val = (channel == MT6360_CHAN_TEMP_JC) ? -80 : 0;
+	return IIO_VAL_INT;
+}
+
+static int mt6360_adc_read_raw(struct iio_dev *iio_dev, const struct iio_chan_spec *chan,
+			       int *val, int *val2, long mask)
+{
+	struct mt6360_adc_data *mad = iio_priv(iio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return mt6360_adc_read_channel(mad, chan->channel, val);
+	case IIO_CHAN_INFO_SCALE:
+		return mt6360_adc_read_scale(mad, chan->channel, val, val2);
+	case IIO_CHAN_INFO_OFFSET:
+		return mt6360_adc_read_offset(mad, chan->channel, val);
+	}
+
+	return -EINVAL;
+}
+
+static const char *mt6360_channel_labels[MT6360_CHAN_MAX] = {
+	"usbid", "vbusdiv5", "vbusdiv2", "vsys", "vbat", "ibus", "ibat", "chg_vddp",
+	"temp_jc", "vref_ts", "ts",
+};
+
+static int mt6360_adc_read_label(struct iio_dev *iio_dev, const struct iio_chan_spec *chan,
+				 char *label)
+{
+	return snprintf(label, PAGE_SIZE, "%s\n", mt6360_channel_labels[chan->channel]);
+}
+
+static const struct iio_info mt6360_adc_iio_info = {
+	.read_raw = mt6360_adc_read_raw,
+	.read_label = mt6360_adc_read_label,
+};
+
+#define MT6360_ADC_CHAN(_idx, _type) {				\
+	.type = _type,						\
+	.channel = MT6360_CHAN_##_idx,				\
+	.scan_index = MT6360_CHAN_##_idx,			\
+	.datasheet_name = #_idx,				\
+	.scan_type =  {						\
+		.sign = 'u',					\
+		.realbits = 16,					\
+		.storagebits = 16,				\
+		.endianness = IIO_CPU,				\
+	},							\
+	.indexed = 1,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+				BIT(IIO_CHAN_INFO_SCALE) |	\
+				BIT(IIO_CHAN_INFO_OFFSET),	\
+}
+
+static const struct iio_chan_spec mt6360_adc_channels[] = {
+	MT6360_ADC_CHAN(USBID, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(VBUSDIV5, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(VBUSDIV2, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(VSYS, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(VBAT, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(IBUS, IIO_CURRENT),
+	MT6360_ADC_CHAN(IBAT, IIO_CURRENT),
+	MT6360_ADC_CHAN(CHG_VDDP, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(TEMP_JC, IIO_TEMP),
+	MT6360_ADC_CHAN(VREF_TS, IIO_VOLTAGE),
+	MT6360_ADC_CHAN(TS, IIO_VOLTAGE),
+	IIO_CHAN_SOFT_TIMESTAMP(MT6360_CHAN_MAX),
+};
+
+static irqreturn_t mt6360_adc_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct mt6360_adc_data *mad = iio_priv(indio_dev);
+	struct {
+		u16 values[MT6360_CHAN_MAX];
+		int64_t timestamp;
+	} data __aligned(8);
+	int i = 0, bit, val, ret;
+
+	memset(&data, 0, sizeof(data));
+	for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) {
+		ret = mt6360_adc_read_channel(mad, bit, &val);
+		if (ret < 0) {
+			dev_warn(&indio_dev->dev, "Failed to get channel %d conversion val\n", bit);
+			goto out;
+		}
+
+		data.values[i++] = val;
+	}
+	iio_push_to_buffers_with_timestamp(indio_dev, &data, iio_get_time_ns(indio_dev));
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static inline int mt6360_adc_reset(struct mt6360_adc_data *info)
+{
+	__be16 adc_enable;
+	ktime_t all_off_time;
+	int i, ret;
+
+	/* Clear ADC idle wait time to 0 */
+	ret = regmap_write(info->regmap, MT6360_REG_PMUADCIDLET, 0);
+	if (ret)
+		return ret;
+
+	/* Only keep ADC enable, but keep all channels off */
+	adc_enable = cpu_to_be16(MT6360_ADCEN_MASK);
+	ret = regmap_raw_write(info->regmap, MT6360_REG_PMUADCCFG, &adc_enable, sizeof(adc_enable));
+	if (ret)
+		return ret;
+
+	/* Reset all channel off time to the current one */
+	all_off_time = ktime_get();
+	for (i = 0; i < MT6360_CHAN_MAX; i++)
+		info->last_off_timestamps[i] = all_off_time;
+
+	return 0;
+}
+
+static int mt6360_adc_probe(struct platform_device *pdev)
+{
+	struct mt6360_adc_data *mad;
+	struct regmap *regmap;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!regmap) {
+		dev_err(&pdev->dev, "Failed to get parent regmap\n");
+		return -ENODEV;
+	}
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*mad));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	mad = iio_priv(indio_dev);
+	mad->dev = &pdev->dev;
+	mad->regmap = regmap;
+	mutex_init(&mad->adc_lock);
+
+	ret = mt6360_adc_reset(mad);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Failed to reset adc\n");
+		return ret;
+	}
+
+	indio_dev->name = dev_name(&pdev->dev);
+	indio_dev->info = &mt6360_adc_iio_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = mt6360_adc_channels;
+	indio_dev->num_channels = ARRAY_SIZE(mt6360_adc_channels);
+
+	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev, NULL,
+					      mt6360_adc_trigger_handler, NULL);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to allocate iio trigger buffer\n");
+		return ret;
+	}
+
+	return devm_iio_device_register(&pdev->dev, indio_dev);
+}
+
+static const struct of_device_id mt6360_adc_of_id[] = {
+	{ .compatible = "mediatek,mt6360-adc", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, mt6360_adc_of_id);
+
+static struct platform_driver mt6360_adc_driver = {
+	.driver = {
+		.name = "mt6360-adc",
+		.of_match_table = mt6360_adc_of_id,
+	},
+	.probe = mt6360_adc_probe,
+};
+module_platform_driver(mt6360_adc_driver);
+
+MODULE_AUTHOR("Gene Chen <gene_chen@richtek.com>");
+MODULE_DESCRIPTION("MT6360 ADC Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/mt6577_auxadc.c b/drivers/iio/adc/mt6577_auxadc.c
index a4776d924f3a..0e134777bdd2 100644
--- a/drivers/iio/adc/mt6577_auxadc.c
+++ b/drivers/iio/adc/mt6577_auxadc.c
@@ -9,9 +9,9 @@
 #include <linux/err.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/iopoll.h>
 #include <linux/io.h>
 #include <linux/iio/iio.h>
@@ -46,6 +46,11 @@ struct mt6577_auxadc_device {
 	const struct mtk_auxadc_compatible *dev_comp;
 };
 
+static const struct mtk_auxadc_compatible mt8186_compat = {
+	.sample_data_cali = false,
+	.check_global_idle = false,
+};
+
 static const struct mtk_auxadc_compatible mt8173_compat = {
 	.sample_data_cali = false,
 	.check_global_idle = true,
@@ -82,6 +87,10 @@ static const struct iio_chan_spec mt6577_auxadc_iio_channels[] = {
 	MT6577_AUXADC_CHANNEL(15),
 };
 
+/* For Voltage calculation */
+#define VOLTAGE_FULL_RANGE  1500	/* VA voltage */
+#define AUXADC_PRECISE      4096	/* 12 bits */
+
 static int mt_auxadc_get_cali_data(int rawdata, bool enable_cali)
 {
 	return rawdata;
@@ -191,6 +200,10 @@ static int mt6577_auxadc_read_raw(struct iio_dev *indio_dev,
 		}
 		if (adc_dev->dev_comp->sample_data_cali)
 			*val = mt_auxadc_get_cali_data(*val, true);
+
+		/* Convert adc raw data to voltage: 0 - 1500 mV */
+		*val = *val * VOLTAGE_FULL_RANGE / AUXADC_PRECISE;
+
 		return IIO_VAL_INT;
 
 	default:
@@ -202,7 +215,7 @@ static const struct iio_info mt6577_auxadc_info = {
 	.read_raw = &mt6577_auxadc_read_raw,
 };
 
-static int __maybe_unused mt6577_auxadc_resume(struct device *dev)
+static int mt6577_auxadc_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct mt6577_auxadc_device *adc_dev = iio_priv(indio_dev);
@@ -221,7 +234,7 @@ static int __maybe_unused mt6577_auxadc_resume(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused mt6577_auxadc_suspend(struct device *dev)
+static int mt6577_auxadc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct mt6577_auxadc_device *adc_dev = iio_priv(indio_dev);
@@ -245,7 +258,6 @@ static int mt6577_auxadc_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	adc_dev = iio_priv(indio_dev);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = dev_name(&pdev->dev);
 	indio_dev->info = &mt6577_auxadc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -277,6 +289,8 @@ static int mt6577_auxadc_probe(struct platform_device *pdev)
 		goto err_disable_clk;
 	}
 
+	adc_dev->dev_comp = device_get_match_data(&pdev->dev);
+
 	mutex_init(&adc_dev->lock);
 
 	mt6577_auxadc_mod_reg(adc_dev->reg_base + MT6577_AUXADC_MISC,
@@ -316,16 +330,17 @@ static int mt6577_auxadc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(mt6577_auxadc_pm_ops,
-			 mt6577_auxadc_suspend,
-			 mt6577_auxadc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(mt6577_auxadc_pm_ops,
+				mt6577_auxadc_suspend,
+				mt6577_auxadc_resume);
 
 static const struct of_device_id mt6577_auxadc_of_match[] = {
-	{ .compatible = "mediatek,mt2701-auxadc", .data = &mt8173_compat},
-	{ .compatible = "mediatek,mt2712-auxadc", .data = &mt8173_compat},
-	{ .compatible = "mediatek,mt7622-auxadc", .data = &mt8173_compat},
-	{ .compatible = "mediatek,mt8173-auxadc", .data = &mt8173_compat},
-	{ .compatible = "mediatek,mt6765-auxadc", .data = &mt6765_compat},
+	{ .compatible = "mediatek,mt2701-auxadc", .data = &mt8173_compat },
+	{ .compatible = "mediatek,mt2712-auxadc", .data = &mt8173_compat },
+	{ .compatible = "mediatek,mt7622-auxadc", .data = &mt8173_compat },
+	{ .compatible = "mediatek,mt8173-auxadc", .data = &mt8173_compat },
+	{ .compatible = "mediatek,mt8186-auxadc", .data = &mt8186_compat },
+	{ .compatible = "mediatek,mt6765-auxadc", .data = &mt6765_compat },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mt6577_auxadc_of_match);
@@ -334,7 +349,7 @@ static struct platform_driver mt6577_auxadc_driver = {
 	.driver = {
 		.name   = "mt6577-auxadc",
 		.of_match_table = mt6577_auxadc_of_match,
-		.pm = &mt6577_auxadc_pm_ops,
+		.pm = pm_sleep_ptr(&mt6577_auxadc_pm_ops),
 	},
 	.probe	= mt6577_auxadc_probe,
 	.remove	= mt6577_auxadc_remove,
diff --git a/drivers/iio/adc/mxs-lradc-adc.c b/drivers/iio/adc/mxs-lradc-adc.c
index 9d2f74c2489a..bca79a93cbe4 100644
--- a/drivers/iio/adc/mxs-lradc-adc.c
+++ b/drivers/iio/adc/mxs-lradc-adc.c
@@ -115,7 +115,8 @@ struct mxs_lradc_adc {
 	struct device		*dev;
 
 	void __iomem		*base;
-	u32			buffer[10];
+	/* Maximum of 8 channels + 8 byte ts */
+	u32			buffer[10] __aligned(8);
 	struct iio_trigger	*trig;
 	struct completion	completion;
 	spinlock_t		lock;
@@ -455,7 +456,7 @@ static int mxs_lradc_adc_trigger_init(struct iio_dev *iio)
 	struct mxs_lradc_adc *adc = iio_priv(iio);
 
 	trig = devm_iio_trigger_alloc(&iio->dev, "%s-dev%i", iio->name,
-				      iio->id);
+				      iio_device_id(iio));
 	if (!trig)
 		return -ENOMEM;
 
@@ -568,8 +569,6 @@ static bool mxs_lradc_adc_validate_scan_mask(struct iio_dev *iio,
 
 static const struct iio_buffer_setup_ops mxs_lradc_adc_buffer_ops = {
 	.preenable = &mxs_lradc_adc_buffer_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
 	.postdisable = &mxs_lradc_adc_buffer_postdisable,
 	.validate_scan_mask = &mxs_lradc_adc_validate_scan_mask,
 };
@@ -722,7 +721,6 @@ static int mxs_lradc_adc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, iio);
 
 	iio->name = pdev->name;
-	iio->dev.parent = dev;
 	iio->dev.of_node = dev->parent->of_node;
 	iio->info = &mxs_lradc_adc_iio_info;
 	iio->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/adc/nau7802.c b/drivers/iio/adc/nau7802.c
index 572579139fba..c1261ecd400c 100644
--- a/drivers/iio/adc/nau7802.c
+++ b/drivers/iio/adc/nau7802.c
@@ -8,10 +8,11 @@
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/wait.h>
 #include <linux/log2.h>
-#include <linux/of.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -407,31 +408,20 @@ static const struct iio_info nau7802_info = {
 	.attrs = &nau7802_attribute_group,
 };
 
-static int nau7802_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static int nau7802_probe(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev;
 	struct nau7802_state *st;
-	struct device_node *np = client->dev.of_node;
 	int i, ret;
 	u8 data;
 	u32 tmp = 0;
 
-	if (!client->dev.of_node) {
-		dev_err(&client->dev, "No device tree node available.\n");
-		return -EINVAL;
-	}
-
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));
 	if (indio_dev == NULL)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);
 
-	i2c_set_clientdata(client, indio_dev);
-
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &nau7802_info;
@@ -461,7 +451,7 @@ static int nau7802_probe(struct i2c_client *client,
 	if (!(ret & NAU7802_PUCTRL_PUR_BIT))
 		return ret;
 
-	of_property_read_u32(np, "nuvoton,vldo", &tmp);
+	device_property_read_u32(&client->dev, "nuvoton,vldo", &tmp);
 	st->vref_mv = tmp;
 
 	data = NAU7802_PUCTRL_PUD_BIT | NAU7802_PUCTRL_PUA_BIT |
@@ -497,12 +487,13 @@ static int nau7802_probe(struct i2c_client *client,
 	 * will enable them back when we will need them..
 	 */
 	if (client->irq) {
-		ret = request_threaded_irq(client->irq,
-				NULL,
-				nau7802_eoc_trigger,
-				IRQF_TRIGGER_HIGH | IRQF_ONESHOT,
-				client->dev.driver->name,
-				indio_dev);
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL,
+						nau7802_eoc_trigger,
+						IRQF_TRIGGER_HIGH | IRQF_ONESHOT |
+						IRQF_NO_AUTOEN,
+						client->dev.driver->name,
+						indio_dev);
 		if (ret) {
 			/*
 			 * What may happen here is that our IRQ controller is
@@ -515,8 +506,7 @@ static int nau7802_probe(struct i2c_client *client,
 			dev_info(&client->dev,
 				"Failed to allocate IRQ, using polling mode\n");
 			client->irq = 0;
-		} else
-			disable_irq(client->irq);
+		}
 	}
 
 	if (!client->irq) {
@@ -528,7 +518,7 @@ static int nau7802_probe(struct i2c_client *client,
 		ret = i2c_smbus_write_byte_data(st->client, NAU7802_REG_CTRL2,
 					  NAU7802_CTRL2_CRS(st->sample_rate));
 		if (ret)
-			goto error_free_irq;
+			return ret;
 	}
 
 	/* Setup the ADC channels available on the board */
@@ -538,36 +528,7 @@ static int nau7802_probe(struct i2c_client *client,
 	mutex_init(&st->lock);
 	mutex_init(&st->data_lock);
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "Couldn't register the device.\n");
-		goto error_device_register;
-	}
-
-	return 0;
-
-error_device_register:
-	mutex_destroy(&st->lock);
-	mutex_destroy(&st->data_lock);
-error_free_irq:
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-
-	return ret;
-}
-
-static int nau7802_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct nau7802_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	mutex_destroy(&st->lock);
-	mutex_destroy(&st->data_lock);
-	if (client->irq)
-		free_irq(client->irq, indio_dev);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id nau7802_i2c_id[] = {
@@ -583,8 +544,7 @@ static const struct of_device_id nau7802_dt_ids[] = {
 MODULE_DEVICE_TABLE(of, nau7802_dt_ids);
 
 static struct i2c_driver nau7802_driver = {
-	.probe = nau7802_probe,
-	.remove = nau7802_remove,
+	.probe_new = nau7802_probe,
 	.id_table = nau7802_i2c_id,
 	.driver = {
 		   .name = "nau7802",
diff --git a/drivers/iio/adc/npcm_adc.c b/drivers/iio/adc/npcm_adc.c
index a6170a37ebe8..ba4cd8f49f66 100644
--- a/drivers/iio/adc/npcm_adc.c
+++ b/drivers/iio/adc/npcm_adc.c
@@ -8,12 +8,21 @@
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spinlock.h>
 #include <linux/uaccess.h>
+#include <linux/reset.h>
+
+struct npcm_adc_info {
+	u32 data_mask;
+	u32 internal_vref;
+	u32 res_bits;
+};
 
 struct npcm_adc {
 	bool int_status;
@@ -23,13 +32,19 @@ struct npcm_adc {
 	struct clk *adc_clk;
 	wait_queue_head_t wq;
 	struct regulator *vref;
-	struct regmap *rst_regmap;
+	struct reset_control *reset;
+	/*
+	 * Lock to protect the device state during a potential concurrent
+	 * read access from userspace. Reading a raw value requires a sequence
+	 * of register writes, then a wait for a event and finally a register
+	 * read, during which userspace could issue another read request.
+	 * This lock protects a read access from ocurring before another one
+	 * has finished.
+	 */
+	struct mutex lock;
+	const struct npcm_adc_info *data;
 };
 
-/* NPCM7xx reset module */
-#define NPCM7XX_IPSRST1_OFFSET		0x020
-#define NPCM7XX_IPSRST1_ADC_RST		BIT(27)
-
 /* ADC registers */
 #define NPCM_ADCCON	 0x00
 #define NPCM_ADCDATA	 0x04
@@ -46,13 +61,21 @@ struct npcm_adc {
 #define NPCM_ADCCON_CH(x)		((x) << 24)
 #define NPCM_ADCCON_DIV_SHIFT		1
 #define NPCM_ADCCON_DIV_MASK		GENMASK(8, 1)
-#define NPCM_ADC_DATA_MASK(x)		((x) & GENMASK(9, 0))
 
 #define NPCM_ADC_ENABLE		(NPCM_ADCCON_ADC_EN | NPCM_ADCCON_ADC_INT_EN)
 
 /* ADC General Definition */
-#define NPCM_RESOLUTION_BITS		10
-#define NPCM_INT_VREF_MV		2000
+static const struct npcm_adc_info npxm7xx_adc_info = {
+	.data_mask = GENMASK(9, 0),
+	.internal_vref = 2048,
+	.res_bits = 10,
+};
+
+static const struct npcm_adc_info npxm8xx_adc_info = {
+	.data_mask = GENMASK(11, 0),
+	.internal_vref = 1229,
+	.res_bits = 12,
+};
 
 #define NPCM_ADC_CHAN(ch) {					\
 	.type = IIO_VOLTAGE,					\
@@ -106,13 +129,11 @@ static int npcm_adc_read(struct npcm_adc *info, int *val, u8 channel)
 					       msecs_to_jiffies(10));
 	if (ret == 0) {
 		regtemp = ioread32(info->regs + NPCM_ADCCON);
-		if ((regtemp & NPCM_ADCCON_ADC_CONV) && info->rst_regmap) {
+		if (regtemp & NPCM_ADCCON_ADC_CONV) {
 			/* if conversion failed - reset ADC module */
-			regmap_write(info->rst_regmap, NPCM7XX_IPSRST1_OFFSET,
-				     NPCM7XX_IPSRST1_ADC_RST);
+			reset_control_assert(info->reset);
 			msleep(100);
-			regmap_write(info->rst_regmap, NPCM7XX_IPSRST1_OFFSET,
-				     0x0);
+			reset_control_deassert(info->reset);
 			msleep(100);
 
 			/* Enable ADC and start conversion module */
@@ -125,7 +146,8 @@ static int npcm_adc_read(struct npcm_adc *info, int *val, u8 channel)
 	if (ret < 0)
 		return ret;
 
-	*val = NPCM_ADC_DATA_MASK(ioread32(info->regs + NPCM_ADCDATA));
+	*val = ioread32(info->regs + NPCM_ADCDATA);
+	*val &= info->data->data_mask;
 
 	return 0;
 }
@@ -140,9 +162,9 @@ static int npcm_adc_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&info->lock);
 		ret = npcm_adc_read(info, val, chan->channel);
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&info->lock);
 		if (ret) {
 			dev_err(info->dev, "NPCM ADC read failed\n");
 			return ret;
@@ -153,9 +175,9 @@ static int npcm_adc_read_raw(struct iio_dev *indio_dev,
 			vref_uv = regulator_get_voltage(info->vref);
 			*val = vref_uv / 1000;
 		} else {
-			*val = NPCM_INT_VREF_MV;
+			*val = info->data->internal_vref;
 		}
-		*val2 = NPCM_RESOLUTION_BITS;
+		*val2 = info->data->res_bits;
 		return IIO_VAL_FRACTIONAL_LOG2;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		*val = info->adc_sample_hz;
@@ -172,7 +194,8 @@ static const struct iio_info npcm_adc_iio_info = {
 };
 
 static const struct of_device_id npcm_adc_match[] = {
-	{ .compatible = "nuvoton,npcm750-adc", },
+	{ .compatible = "nuvoton,npcm750-adc", .data = &npxm7xx_adc_info},
+	{ .compatible = "nuvoton,npcm845-adc", .data = &npxm8xx_adc_info},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, npcm_adc_match);
@@ -186,19 +209,28 @@ static int npcm_adc_probe(struct platform_device *pdev)
 	struct npcm_adc *info;
 	struct iio_dev *indio_dev;
 	struct device *dev = &pdev->dev;
-	struct device_node *np = pdev->dev.of_node;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*info));
 	if (!indio_dev)
 		return -ENOMEM;
 	info = iio_priv(indio_dev);
 
+	info->data = device_get_match_data(dev);
+	if (!info->data)
+		return -EINVAL;
+
+	mutex_init(&info->lock);
+
 	info->dev = &pdev->dev;
 
 	info->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(info->regs))
 		return PTR_ERR(info->regs);
 
+	info->reset = devm_reset_control_get(&pdev->dev, NULL);
+	if (IS_ERR(info->reset))
+		return PTR_ERR(info->reset);
+
 	info->adc_clk = devm_clk_get(&pdev->dev, NULL);
 	if (IS_ERR(info->adc_clk)) {
 		dev_warn(&pdev->dev, "ADC clock failed: can't read clk\n");
@@ -211,16 +243,6 @@ static int npcm_adc_probe(struct platform_device *pdev)
 	div = div >> NPCM_ADCCON_DIV_SHIFT;
 	info->adc_sample_hz = clk_get_rate(info->adc_clk) / ((div + 1) * 2);
 
-	if (of_device_is_compatible(np, "nuvoton,npcm750-adc")) {
-		info->rst_regmap = syscon_regmap_lookup_by_compatible
-			("nuvoton,npcm750-rst");
-		if (IS_ERR(info->rst_regmap)) {
-			dev_err(&pdev->dev, "Failed to find nuvoton,npcm750-rst\n");
-			ret = PTR_ERR(info->rst_regmap);
-			goto err_disable_clk;
-		}
-	}
-
 	irq = platform_get_irq(pdev, 0);
 	if (irq <= 0) {
 		ret = -EINVAL;
@@ -273,7 +295,6 @@ static int npcm_adc_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, indio_dev);
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &npcm_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = npcm_adc_iio_channels;
diff --git a/drivers/iio/adc/palmas_gpadc.c b/drivers/iio/adc/palmas_gpadc.c
index 46e595eb889f..fd000345ec5c 100644
--- a/drivers/iio/adc/palmas_gpadc.c
+++ b/drivers/iio/adc/palmas_gpadc.c
@@ -76,7 +76,7 @@ static struct palmas_gpadc_info palmas_gpadc_info[] = {
 	PALMAS_ADC_INFO(IN15, 0, 0, 0, 0, INVALID, INVALID, true),
 };
 
-/**
+/*
  * struct palmas_gpadc - the palmas_gpadc structure
  * @ch0_current:	channel 0 current source setting
  *			0: 0 uA
@@ -90,11 +90,16 @@ static struct palmas_gpadc_info palmas_gpadc_info[] = {
  *			3: 800 uA
  * @extended_delay:	enable the gpadc extended delay mode
  * @auto_conversion_period:	define the auto_conversion_period
+ * @lock:	Lock to protect the device state during a potential concurrent
+ *		read access from userspace. Reading a raw value requires a sequence
+ *		of register writes, then a wait for a completion callback,
+ *		and finally a register read, during which userspace could issue
+ *		another read request. This lock protects a read access from
+ *		ocurring before another one has finished.
  *
  * This is the palmas_gpadc structure to store run-time information
  * and pointers for this driver instance.
  */
-
 struct palmas_gpadc {
 	struct device			*dev;
 	struct palmas			*palmas;
@@ -111,6 +116,7 @@ struct palmas_gpadc {
 	bool				wakeup1_enable;
 	bool				wakeup2_enable;
 	int				auto_conversion_period;
+	struct mutex			lock;
 };
 
 /*
@@ -370,7 +376,8 @@ static int palmas_gpadc_get_calibrated_code(struct palmas_gpadc *adc,
 					adc->adc_info[adc_chan].gain_error;
 
 	if (val < 0) {
-		dev_err(adc->dev, "Mismatch with calibration\n");
+		if (val < -10)
+			dev_err(adc->dev, "Mismatch with calibration var = %d\n", val);
 		return 0;
 	}
 
@@ -389,7 +396,7 @@ static int palmas_gpadc_read_raw(struct iio_dev *indio_dev,
 	if (adc_chan > PALMAS_ADC_CH_MAX)
 		return -EINVAL;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&adc->lock);
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
@@ -415,12 +422,12 @@ static int palmas_gpadc_read_raw(struct iio_dev *indio_dev,
 		goto out;
 	}
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&adc->lock);
 	return ret;
 
 out:
 	palmas_gpadc_read_done(adc, adc_chan);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&adc->lock);
 
 	return ret;
 }
@@ -517,8 +524,11 @@ static int palmas_gpadc_probe(struct platform_device *pdev)
 	adc->dev = &pdev->dev;
 	adc->palmas = dev_get_drvdata(pdev->dev.parent);
 	adc->adc_info = palmas_gpadc_info;
+
+	mutex_init(&adc->lock);
+
 	init_completion(&adc->conv_completion);
-	dev_set_drvdata(&pdev->dev, indio_dev);
+	platform_set_drvdata(pdev, indio_dev);
 
 	adc->auto_conversion_period = gpadc_pdata->auto_conversion_period_ms;
 	adc->irq = palmas_irq_get_virq(adc->palmas, PALMAS_GPADC_EOC_SW_IRQ);
@@ -593,7 +603,6 @@ static int palmas_gpadc_probe(struct platform_device *pdev)
 	adc->extended_delay = gpadc_pdata->extended_delay;
 
 	indio_dev->name = MOD_NAME;
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &palmas_gpadc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = palmas_gpadc_iio_channel;
@@ -645,7 +654,6 @@ static int palmas_gpadc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int palmas_adc_wakeup_configure(struct palmas_gpadc *adc)
 {
 	int adc_period, conv;
@@ -656,8 +664,8 @@ static int palmas_adc_wakeup_configure(struct palmas_gpadc *adc)
 
 	adc_period = adc->auto_conversion_period;
 	for (i = 0; i < 16; ++i) {
-		if (((1000 * (1 << i)) / 32) < adc_period)
-			continue;
+		if (((1000 * (1 << i)) / 32) >= adc_period)
+			break;
 	}
 	if (i > 0)
 		i--;
@@ -814,12 +822,9 @@ static int palmas_gpadc_resume(struct device *dev)
 
 	return 0;
 };
-#endif
 
-static const struct dev_pm_ops palmas_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(palmas_gpadc_suspend,
-				palmas_gpadc_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(palmas_pm_ops, palmas_gpadc_suspend,
+				palmas_gpadc_resume);
 
 static const struct of_device_id of_palmas_gpadc_match_tbl[] = {
 	{ .compatible = "ti,palmas-gpadc", },
@@ -832,22 +837,11 @@ static struct platform_driver palmas_gpadc_driver = {
 	.remove = palmas_gpadc_remove,
 	.driver = {
 		.name = MOD_NAME,
-		.pm = &palmas_pm_ops,
+		.pm = pm_sleep_ptr(&palmas_pm_ops),
 		.of_match_table = of_palmas_gpadc_match_tbl,
 	},
 };
-
-static int __init palmas_gpadc_init(void)
-{
-	return platform_driver_register(&palmas_gpadc_driver);
-}
-module_init(palmas_gpadc_init);
-
-static void __exit palmas_gpadc_exit(void)
-{
-	platform_driver_unregister(&palmas_gpadc_driver);
-}
-module_exit(palmas_gpadc_exit);
+module_platform_driver(palmas_gpadc_driver);
 
 MODULE_DESCRIPTION("palmas GPADC driver");
 MODULE_AUTHOR("Pradeep Goudagunta<pgoudagunta@nvidia.com>");
diff --git a/drivers/iio/adc/qcom-pm8xxx-xoadc.c b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
index c599ffa45a04..eb424496ee1d 100644
--- a/drivers/iio/adc/qcom-pm8xxx-xoadc.c
+++ b/drivers/iio/adc/qcom-pm8xxx-xoadc.c
@@ -10,19 +10,18 @@
  * Author: Linus Walleij <linus.walleij@linaro.org>
  */
 
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/regulator/consumer.h>
 
-#include "qcom-vadc-common.h"
-
 /*
  * Definitions for the "user processor" registers lifted from the v3.4
  * Qualcomm tree. Their kernel has two out-of-tree drivers for the ADC:
@@ -120,7 +119,7 @@
 #define ADC_ARB_USRP_DATA0			0x19D
 #define ADC_ARB_USRP_DATA1			0x19C
 
-/**
+/*
  * Physical channels which MUST exist on all PM variants in order to provide
  * proper reference points for calibration.
  *
@@ -176,7 +175,7 @@ struct xoadc_channel {
 	const char *datasheet_name;
 	u8 pre_scale_mux:2;
 	u8 amux_channel:4;
-	const struct vadc_prescale_ratio prescale;
+	const struct u32_fract prescale;
 	enum iio_chan_type type;
 	enum vadc_scale_fn_type scale_fn_type;
 	u8 amux_ip_rsv:3;
@@ -219,7 +218,9 @@ struct xoadc_variant {
 		.datasheet_name = __stringify(_dname),			\
 		.pre_scale_mux = _presmux,				\
 		.amux_channel = _amux,					\
-		.prescale = { .num = _prenum, .den = _preden },		\
+		.prescale = {						\
+			.numerator = _prenum, .denominator = _preden,	\
+		},							\
 		.type = _type,						\
 		.scale_fn_type = _scale,				\
 		.amux_ip_rsv = _amip,					\
@@ -388,6 +389,7 @@ struct pm8xxx_chan_info {
  * struct pm8xxx_xoadc - state container for the XOADC
  * @dev: pointer to device
  * @map: regmap to access registers
+ * @variant: XOADC variant characteristics
  * @vref: reference voltage regulator
  * characteristics of the channels, and sensible default settings
  * @nchans: number of channels, configured by the device tree
@@ -692,8 +694,8 @@ static int pm8xxx_read_raw(struct iio_dev *indio_dev,
 	}
 }
 
-static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
-			   const struct of_phandle_args *iiospec)
+static int pm8xxx_fwnode_xlate(struct iio_dev *indio_dev,
+			       const struct fwnode_reference_args *iiospec)
 {
 	struct pm8xxx_xoadc *adc = iio_priv(indio_dev);
 	u8 pre_scale_mux;
@@ -704,10 +706,10 @@ static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
 	 * First cell is prescaler or premux, second cell is analog
 	 * mux.
 	 */
-	if (iiospec->args_count != 2) {
-		dev_err(&indio_dev->dev, "wrong number of arguments for %pOFn need 2 got %d\n",
-			iiospec->np,
-			iiospec->args_count);
+	if (iiospec->nargs != 2) {
+		dev_err(&indio_dev->dev, "wrong number of arguments for %pfwP need 2 got %d\n",
+			iiospec->fwnode,
+			iiospec->nargs);
 		return -EINVAL;
 	}
 	pre_scale_mux = (u8)iiospec->args[0];
@@ -725,34 +727,34 @@ static int pm8xxx_of_xlate(struct iio_dev *indio_dev,
 }
 
 static const struct iio_info pm8xxx_xoadc_info = {
-	.of_xlate = pm8xxx_of_xlate,
+	.fwnode_xlate = pm8xxx_fwnode_xlate,
 	.read_raw = pm8xxx_read_raw,
 };
 
 static int pm8xxx_xoadc_parse_channel(struct device *dev,
-				      struct device_node *np,
+				      struct fwnode_handle *fwnode,
 				      const struct xoadc_channel *hw_channels,
 				      struct iio_chan_spec *iio_chan,
 				      struct pm8xxx_chan_info *ch)
 {
-	const char *name = np->name;
+	const char *name = fwnode_get_name(fwnode);
 	const struct xoadc_channel *hwchan;
-	u32 pre_scale_mux, amux_channel;
+	u32 pre_scale_mux, amux_channel, reg[2];
 	u32 rsv, dec;
 	int ret;
 	int chid;
 
-	ret = of_property_read_u32_index(np, "reg", 0, &pre_scale_mux);
+	ret = fwnode_property_read_u32_array(fwnode, "reg", reg,
+					     ARRAY_SIZE(reg));
 	if (ret) {
-		dev_err(dev, "invalid pre scale/mux number %s\n", name);
-		return ret;
-	}
-	ret = of_property_read_u32_index(np, "reg", 1, &amux_channel);
-	if (ret) {
-		dev_err(dev, "invalid amux channel number %s\n", name);
+		dev_err(dev, "invalid pre scale/mux or amux channel number %s\n",
+			name);
 		return ret;
 	}
 
+	pre_scale_mux = reg[0];
+	amux_channel = reg[1];
+
 	/* Find the right channel setting */
 	chid = 0;
 	hwchan = &hw_channels[0];
@@ -776,7 +778,7 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev,
 	/* Everyone seems to use default ("type 2") decimation */
 	ch->decimation = VADC_DEF_DECIMATION;
 
-	if (!of_property_read_u32(np, "qcom,ratiometric", &rsv)) {
+	if (!fwnode_property_read_u32(fwnode, "qcom,ratiometric", &rsv)) {
 		ch->calibration = VADC_CALIB_RATIOMETRIC;
 		if (rsv > XOADC_RSV_MAX) {
 			dev_err(dev, "%s too large RSV value %d\n", name, rsv);
@@ -789,7 +791,7 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev,
 	}
 
 	/* Optional decimation, if omitted we use the default */
-	ret = of_property_read_u32(np, "qcom,decimation", &dec);
+	ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &dec);
 	if (!ret) {
 		ret = qcom_vadc_decimation_from_dt(dec);
 		if (ret < 0) {
@@ -809,25 +811,23 @@ static int pm8xxx_xoadc_parse_channel(struct device *dev,
 		BIT(IIO_CHAN_INFO_PROCESSED);
 	iio_chan->indexed = 1;
 
-	dev_dbg(dev, "channel [PRESCALE/MUX: %02x AMUX: %02x] \"%s\" "
-		"ref voltage: %d, decimation %d "
-		"prescale %d/%d, scale function %d\n",
+	dev_dbg(dev,
+		"channel [PRESCALE/MUX: %02x AMUX: %02x] \"%s\" ref voltage: %d, decimation %d prescale %d/%d, scale function %d\n",
 		hwchan->pre_scale_mux, hwchan->amux_channel, ch->name,
-		ch->amux_ip_rsv, ch->decimation, hwchan->prescale.num,
-		hwchan->prescale.den, hwchan->scale_fn_type);
+		ch->amux_ip_rsv, ch->decimation, hwchan->prescale.numerator,
+		hwchan->prescale.denominator, hwchan->scale_fn_type);
 
 	return 0;
 }
 
-static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc,
-				       struct device_node *np)
+static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc)
 {
-	struct device_node *child;
+	struct fwnode_handle *child;
 	struct pm8xxx_chan_info *ch;
 	int ret;
 	int i;
 
-	adc->nchans = of_get_available_child_count(np);
+	adc->nchans = device_get_child_node_count(adc->dev);
 	if (!adc->nchans) {
 		dev_err(adc->dev, "no channel children\n");
 		return -ENODEV;
@@ -845,14 +845,14 @@ static int pm8xxx_xoadc_parse_channels(struct pm8xxx_xoadc *adc,
 		return -ENOMEM;
 
 	i = 0;
-	for_each_available_child_of_node(np, child) {
+	device_for_each_child_node(adc->dev, child) {
 		ch = &adc->chans[i];
 		ret = pm8xxx_xoadc_parse_channel(adc->dev, child,
 						 adc->variant->channels,
 						 &adc->iio_chans[i],
 						 ch);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 		i++;
@@ -883,12 +883,11 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev)
 	const struct xoadc_variant *variant;
 	struct pm8xxx_xoadc *adc;
 	struct iio_dev *indio_dev;
-	struct device_node *np = pdev->dev.of_node;
 	struct regmap *map;
 	struct device *dev = &pdev->dev;
 	int ret;
 
-	variant = of_device_get_match_data(dev);
+	variant = device_get_match_data(dev);
 	if (!variant)
 		return -ENODEV;
 
@@ -903,23 +902,22 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev)
 	init_completion(&adc->complete);
 	mutex_init(&adc->lock);
 
-	ret = pm8xxx_xoadc_parse_channels(adc, np);
+	ret = pm8xxx_xoadc_parse_channels(adc);
 	if (ret)
 		return ret;
 
 	map = dev_get_regmap(dev->parent, NULL);
 	if (!map) {
 		dev_err(dev, "parent regmap unavailable.\n");
-		return -ENXIO;
+		return -ENODEV;
 	}
 	adc->map = map;
 
 	/* Bring up regulator */
 	adc->vref = devm_regulator_get(dev, "xoadc-ref");
-	if (IS_ERR(adc->vref)) {
-		dev_err(dev, "failed to get XOADC VREF regulator\n");
-		return PTR_ERR(adc->vref);
-	}
+	if (IS_ERR(adc->vref))
+		return dev_err_probe(dev, PTR_ERR(adc->vref),
+				     "failed to get XOADC VREF regulator\n");
 	ret = regulator_enable(adc->vref);
 	if (ret) {
 		dev_err(dev, "failed to enable XOADC VREF regulator\n");
@@ -933,8 +931,6 @@ static int pm8xxx_xoadc_probe(struct platform_device *pdev)
 		goto out_disable_vref;
 	}
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = np;
 	indio_dev->name = variant->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &pm8xxx_xoadc_info;
diff --git a/drivers/iio/adc/qcom-spmi-adc5.c b/drivers/iio/adc/qcom-spmi-adc5.c
index 21fdcde77883..821fee60a765 100644
--- a/drivers/iio/adc/qcom-spmi-adc5.c
+++ b/drivers/iio/adc/qcom-spmi-adc5.c
@@ -1,28 +1,30 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * Copyright (c) 2018, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2018, 2020, The Linux Foundation. All rights reserved.
  */
 
 #include <linux/bitops.h>
 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/err.h>
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/log2.h>
 #include <linux/math64.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 
 #include <dt-bindings/iio/qcom,spmi-vadc.h>
-#include "qcom-vadc-common.h"
 
 #define ADC5_USR_REVISION1			0x0
 #define ADC5_USR_STATUS1			0x8
+#define ADC5_USR_STATUS1_CONV_FAULT		BIT(7)
 #define ADC5_USR_STATUS1_REQ_STS		BIT(1)
 #define ADC5_USR_STATUS1_EOC			BIT(0)
 #define ADC5_USR_STATUS1_REQ_STS_EOC_MASK	0x3
@@ -65,6 +67,9 @@
 
 #define ADC5_USR_IBAT_DATA1			0x53
 
+#define ADC_CHANNEL_OFFSET			0x8
+#define ADC_CHANNEL_MASK			GENMASK(7, 0)
+
 /*
  * Conversion time varies based on the decimation, clock rate, fast average
  * samples and measurements queued across different VADC peripherals.
@@ -79,6 +84,11 @@
 #define ADC5_HW_SETTLE_DIFF_MINOR		3
 #define ADC5_HW_SETTLE_DIFF_MAJOR		5
 
+/* For PMIC7 */
+#define ADC_APP_SID				0x40
+#define ADC_APP_SID_MASK			GENMASK(3, 0)
+#define ADC7_CONV_TIMEOUT			msecs_to_jiffies(10)
+
 enum adc5_cal_method {
 	ADC5_NO_CAL = 0,
 	ADC5_RATIOMETRIC_CAL,
@@ -96,6 +106,7 @@ enum adc5_cal_val {
  * @cal_method: calibration method.
  * @cal_val: calibration value
  * @decimation: sampling rate supported for the channel.
+ * @sid: slave id of PMIC owning the channel, for PMIC7.
  * @prescale: channel scaling performed on the input signal.
  * @hw_settle_time: the time between AMUX being configured and the
  *	start of conversion.
@@ -110,6 +121,7 @@ struct adc5_channel_prop {
 	enum adc5_cal_method	cal_method;
 	enum adc5_cal_val	cal_val;
 	unsigned int		decimation;
+	unsigned int		sid;
 	unsigned int		prescale;
 	unsigned int		hw_settle_time;
 	unsigned int		avg_samples;
@@ -143,18 +155,6 @@ struct adc5_chip {
 	const struct adc5_data	*data;
 };
 
-static const struct vadc_prescale_ratio adc5_prescale_ratios[] = {
-	{.num =  1, .den =  1},
-	{.num =  1, .den =  3},
-	{.num =  1, .den =  4},
-	{.num =  1, .den =  6},
-	{.num =  1, .den = 20},
-	{.num =  1, .den =  8},
-	{.num = 10, .den = 81},
-	{.num =  1, .den = 10},
-	{.num =  1, .den = 16}
-};
-
 static int adc5_read(struct adc5_chip *adc, u16 offset, u8 *data, int len)
 {
 	return regmap_bulk_read(adc->regmap, adc->base + offset, data, len);
@@ -165,53 +165,9 @@ static int adc5_write(struct adc5_chip *adc, u16 offset, u8 *data, int len)
 	return regmap_bulk_write(adc->regmap, adc->base + offset, data, len);
 }
 
-static int adc5_prescaling_from_dt(u32 num, u32 den)
-{
-	unsigned int pre;
-
-	for (pre = 0; pre < ARRAY_SIZE(adc5_prescale_ratios); pre++)
-		if (adc5_prescale_ratios[pre].num == num &&
-		    adc5_prescale_ratios[pre].den == den)
-			break;
-
-	if (pre == ARRAY_SIZE(adc5_prescale_ratios))
-		return -EINVAL;
-
-	return pre;
-}
-
-static int adc5_hw_settle_time_from_dt(u32 value,
-					const unsigned int *hw_settle)
-{
-	unsigned int i;
-
-	for (i = 0; i < VADC_HW_SETTLE_SAMPLES_MAX; i++) {
-		if (value == hw_settle[i])
-			return i;
-	}
-
-	return -EINVAL;
-}
-
-static int adc5_avg_samples_from_dt(u32 value)
+static int adc5_masked_write(struct adc5_chip *adc, u16 offset, u8 mask, u8 val)
 {
-	if (!is_power_of_2(value) || value > ADC5_AVG_SAMPLES_MAX)
-		return -EINVAL;
-
-	return __ffs(value);
-}
-
-static int adc5_decimation_from_dt(u32 value,
-					const unsigned int *decimation)
-{
-	unsigned int i;
-
-	for (i = 0; i < ADC5_DECIMATION_SAMPLES_MAX; i++) {
-		if (value == decimation[i])
-			return i;
-	}
-
-	return -EINVAL;
+	return regmap_update_bits(adc->regmap, adc->base + offset, mask, val);
 }
 
 static int adc5_read_voltage_data(struct adc5_chip *adc, u16 *data)
@@ -230,11 +186,11 @@ static int adc5_read_voltage_data(struct adc5_chip *adc, u16 *data)
 	*data = (rslt_msb << 8) | rslt_lsb;
 
 	if (*data == ADC5_USR_DATA_CHECK) {
-		pr_err("Invalid data:0x%x\n", *data);
+		dev_err(adc->dev, "Invalid data:0x%x\n", *data);
 		return -EINVAL;
 	}
 
-	pr_debug("voltage raw code:0x%x\n", *data);
+	dev_dbg(adc->dev, "voltage raw code:0x%x\n", *data);
 
 	return 0;
 }
@@ -285,7 +241,7 @@ static int adc5_configure(struct adc5_chip *adc,
 
 	/* Read registers 0x42 through 0x46 */
 	ret = adc5_read(adc, ADC5_USR_DIG_PARAM, buf, sizeof(buf));
-	if (ret < 0)
+	if (ret)
 		return ret;
 
 	/* Digital param selection */
@@ -314,6 +270,47 @@ static int adc5_configure(struct adc5_chip *adc,
 	return adc5_write(adc, ADC5_USR_DIG_PARAM, buf, sizeof(buf));
 }
 
+static int adc7_configure(struct adc5_chip *adc,
+			struct adc5_channel_prop *prop)
+{
+	int ret;
+	u8 conv_req = 0, buf[4];
+
+	ret = adc5_masked_write(adc, ADC_APP_SID, ADC_APP_SID_MASK, prop->sid);
+	if (ret)
+		return ret;
+
+	ret = adc5_read(adc, ADC5_USR_DIG_PARAM, buf, sizeof(buf));
+	if (ret)
+		return ret;
+
+	/* Digital param selection */
+	adc5_update_dig_param(adc, prop, &buf[0]);
+
+	/* Update fast average sample value */
+	buf[1] &= ~ADC5_USR_FAST_AVG_CTL_SAMPLES_MASK;
+	buf[1] |= prop->avg_samples;
+
+	/* Select ADC channel */
+	buf[2] = prop->channel;
+
+	/* Select HW settle delay for channel */
+	buf[3] &= ~ADC5_USR_HW_SETTLE_DELAY_MASK;
+	buf[3] |= prop->hw_settle_time;
+
+	/* Select CONV request */
+	conv_req = ADC5_USR_CONV_REQ_REQ;
+
+	if (!adc->poll_eoc)
+		reinit_completion(&adc->complete);
+
+	ret = adc5_write(adc, ADC5_USR_DIG_PARAM, buf, sizeof(buf));
+	if (ret)
+		return ret;
+
+	return adc5_write(adc, ADC5_USR_CONV_REQ, &conv_req, 1);
+}
+
 static int adc5_do_conversion(struct adc5_chip *adc,
 			struct adc5_channel_prop *prop,
 			struct iio_chan_spec const *chan,
@@ -325,24 +322,24 @@ static int adc5_do_conversion(struct adc5_chip *adc,
 
 	ret = adc5_configure(adc, prop);
 	if (ret) {
-		pr_err("ADC configure failed with %d\n", ret);
+		dev_err(adc->dev, "ADC configure failed with %d\n", ret);
 		goto unlock;
 	}
 
 	if (adc->poll_eoc) {
 		ret = adc5_poll_wait_eoc(adc);
-		if (ret < 0) {
-			pr_err("EOC bit not set\n");
+		if (ret) {
+			dev_err(adc->dev, "EOC bit not set\n");
 			goto unlock;
 		}
 	} else {
 		ret = wait_for_completion_timeout(&adc->complete,
 							ADC5_CONV_TIMEOUT);
 		if (!ret) {
-			pr_debug("Did not get completion timeout.\n");
+			dev_dbg(adc->dev, "Did not get completion timeout.\n");
 			ret = adc5_poll_wait_eoc(adc);
-			if (ret < 0) {
-				pr_err("EOC bit not set\n");
+			if (ret) {
+				dev_err(adc->dev, "EOC bit not set\n");
 				goto unlock;
 			}
 		}
@@ -355,6 +352,48 @@ unlock:
 	return ret;
 }
 
+static int adc7_do_conversion(struct adc5_chip *adc,
+			struct adc5_channel_prop *prop,
+			struct iio_chan_spec const *chan,
+			u16 *data_volt, u16 *data_cur)
+{
+	int ret;
+	u8 status;
+
+	mutex_lock(&adc->lock);
+
+	ret = adc7_configure(adc, prop);
+	if (ret) {
+		dev_err(adc->dev, "ADC configure failed with %d\n", ret);
+		goto unlock;
+	}
+
+	/* No support for polling mode at present */
+	wait_for_completion_timeout(&adc->complete, ADC7_CONV_TIMEOUT);
+
+	ret = adc5_read(adc, ADC5_USR_STATUS1, &status, 1);
+	if (ret)
+		goto unlock;
+
+	if (status & ADC5_USR_STATUS1_CONV_FAULT) {
+		dev_err(adc->dev, "Unexpected conversion fault\n");
+		ret = -EIO;
+		goto unlock;
+	}
+
+	ret = adc5_read_voltage_data(adc, data_volt);
+
+unlock:
+	mutex_unlock(&adc->lock);
+
+	return ret;
+}
+
+typedef int (*adc_do_conversion)(struct adc5_chip *adc,
+			struct adc5_channel_prop *prop,
+			struct iio_chan_spec const *chan,
+			u16 *data_volt, u16 *data_cur);
+
 static irqreturn_t adc5_isr(int irq, void *dev_id)
 {
 	struct adc5_chip *adc = dev_id;
@@ -364,8 +403,8 @@ static irqreturn_t adc5_isr(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int adc5_of_xlate(struct iio_dev *indio_dev,
-				const struct of_phandle_args *iiospec)
+static int adc5_fwnode_xlate(struct iio_dev *indio_dev,
+			     const struct fwnode_reference_args *iiospec)
 {
 	struct adc5_chip *adc = iio_priv(indio_dev);
 	int i;
@@ -377,9 +416,25 @@ static int adc5_of_xlate(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
-static int adc5_read_raw(struct iio_dev *indio_dev,
+static int adc7_fwnode_xlate(struct iio_dev *indio_dev,
+			     const struct fwnode_reference_args *iiospec)
+{
+	struct adc5_chip *adc = iio_priv(indio_dev);
+	int i, v_channel;
+
+	for (i = 0; i < adc->nchannels; i++) {
+		v_channel = (adc->chan_props[i].sid << ADC_CHANNEL_OFFSET) |
+			adc->chan_props[i].channel;
+		if (v_channel == iiospec->args[0])
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+static int adc_read_raw_common(struct iio_dev *indio_dev,
 			 struct iio_chan_spec const *chan, int *val, int *val2,
-			 long mask)
+			 long mask, adc_do_conversion do_conv)
 {
 	struct adc5_chip *adc = iio_priv(indio_dev);
 	struct adc5_channel_prop *prop;
@@ -390,13 +445,13 @@ static int adc5_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_PROCESSED:
-		ret = adc5_do_conversion(adc, prop, chan,
-				&adc_code_volt, &adc_code_cur);
+		ret = do_conv(adc, prop, chan,
+					&adc_code_volt, &adc_code_cur);
 		if (ret)
 			return ret;
 
 		ret = qcom_adc5_hw_scale(prop->scale_fn_type,
-			&adc5_prescale_ratios[prop->prescale],
+			prop->prescale,
 			adc->data,
 			adc_code_volt, val);
 		if (ret)
@@ -406,13 +461,32 @@ static int adc5_read_raw(struct iio_dev *indio_dev,
 	default:
 		return -EINVAL;
 	}
+}
 
-	return 0;
+static int adc5_read_raw(struct iio_dev *indio_dev,
+			 struct iio_chan_spec const *chan, int *val, int *val2,
+			 long mask)
+{
+	return adc_read_raw_common(indio_dev, chan, val, val2,
+				mask, adc5_do_conversion);
+}
+
+static int adc7_read_raw(struct iio_dev *indio_dev,
+			 struct iio_chan_spec const *chan, int *val, int *val2,
+			 long mask)
+{
+	return adc_read_raw_common(indio_dev, chan, val, val2,
+				mask, adc7_do_conversion);
 }
 
 static const struct iio_info adc5_info = {
 	.read_raw = adc5_read_raw,
-	.of_xlate = adc5_of_xlate,
+	.fwnode_xlate = adc5_fwnode_xlate,
+};
+
+static const struct iio_info adc7_info = {
+	.read_raw = adc7_read_raw,
+	.fwnode_xlate = adc7_fwnode_xlate,
 };
 
 struct adc5_channels {
@@ -452,6 +526,8 @@ static const struct adc5_channels adc5_chans_pmic[ADC5_MAX_CHANNEL] = {
 					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_VBAT_SNS]		= ADC5_CHAN_VOLT("vbat_sns", 1,
 					SCALE_HW_CALIB_DEFAULT)
+	[ADC5_VCOIN]		= ADC5_CHAN_VOLT("vcoin", 1,
+					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_DIE_TEMP]		= ADC5_CHAN_TEMP("die_temp", 0,
 					SCALE_HW_CALIB_PMIC_THERM)
 	[ADC5_USB_IN_I]		= ADC5_CHAN_VOLT("usb_in_i_uv", 0,
@@ -475,6 +551,45 @@ static const struct adc5_channels adc5_chans_pmic[ADC5_MAX_CHANNEL] = {
 					SCALE_HW_CALIB_THERM_100K_PULLUP)
 	[ADC5_AMUX_THM2]	= ADC5_CHAN_TEMP("amux_thm2", 0,
 					SCALE_HW_CALIB_PM5_SMB_TEMP)
+	[ADC5_GPIO1_100K_PU]	= ADC5_CHAN_TEMP("gpio1_100k_pu", 0,
+					SCALE_HW_CALIB_THERM_100K_PULLUP)
+	[ADC5_GPIO3_100K_PU]	= ADC5_CHAN_TEMP("gpio3_100k_pu", 0,
+					SCALE_HW_CALIB_THERM_100K_PULLUP)
+	[ADC5_GPIO4_100K_PU]	= ADC5_CHAN_TEMP("gpio4_100k_pu", 0,
+					SCALE_HW_CALIB_THERM_100K_PULLUP)
+};
+
+static const struct adc5_channels adc7_chans_pmic[ADC5_MAX_CHANNEL] = {
+	[ADC7_REF_GND]		= ADC5_CHAN_VOLT("ref_gnd", 0,
+					SCALE_HW_CALIB_DEFAULT)
+	[ADC7_1P25VREF]		= ADC5_CHAN_VOLT("vref_1p25", 0,
+					SCALE_HW_CALIB_DEFAULT)
+	[ADC7_VPH_PWR]		= ADC5_CHAN_VOLT("vph_pwr", 1,
+					SCALE_HW_CALIB_DEFAULT)
+	[ADC7_VBAT_SNS]		= ADC5_CHAN_VOLT("vbat_sns", 3,
+					SCALE_HW_CALIB_DEFAULT)
+	[ADC7_DIE_TEMP]		= ADC5_CHAN_TEMP("die_temp", 0,
+					SCALE_HW_CALIB_PMIC_THERM_PM7)
+	[ADC7_AMUX_THM1_100K_PU] = ADC5_CHAN_TEMP("amux_thm1_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_AMUX_THM2_100K_PU] = ADC5_CHAN_TEMP("amux_thm2_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_AMUX_THM3_100K_PU] = ADC5_CHAN_TEMP("amux_thm3_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_AMUX_THM4_100K_PU] = ADC5_CHAN_TEMP("amux_thm4_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_AMUX_THM5_100K_PU] = ADC5_CHAN_TEMP("amux_thm5_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_AMUX_THM6_100K_PU] = ADC5_CHAN_TEMP("amux_thm6_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_GPIO1_100K_PU]	= ADC5_CHAN_TEMP("gpio1_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_GPIO2_100K_PU]	= ADC5_CHAN_TEMP("gpio2_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_GPIO3_100K_PU]	= ADC5_CHAN_TEMP("gpio3_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
+	[ADC7_GPIO4_100K_PU]	= ADC5_CHAN_TEMP("gpio4_pu2", 0,
+					SCALE_HW_CALIB_THERM_100K_PU_PM7)
 };
 
 static const struct adc5_channels adc5_chans_rev2[ADC5_MAX_CHANNEL] = {
@@ -482,6 +597,8 @@ static const struct adc5_channels adc5_chans_rev2[ADC5_MAX_CHANNEL] = {
 					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_1P25VREF]		= ADC5_CHAN_VOLT("vref_1p25", 0,
 					SCALE_HW_CALIB_DEFAULT)
+	[ADC5_VREF_VADC]	= ADC5_CHAN_VOLT("vref_vadc", 0,
+					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_VPH_PWR]		= ADC5_CHAN_VOLT("vph_pwr", 1,
 					SCALE_HW_CALIB_DEFAULT)
 	[ADC5_VBAT_SNS]		= ADC5_CHAN_VOLT("vbat_sns", 1,
@@ -504,22 +621,32 @@ static const struct adc5_channels adc5_chans_rev2[ADC5_MAX_CHANNEL] = {
 					SCALE_HW_CALIB_THERM_100K_PULLUP)
 };
 
-static int adc5_get_dt_channel_data(struct adc5_chip *adc,
+static int adc5_get_fw_channel_data(struct adc5_chip *adc,
 				    struct adc5_channel_prop *prop,
-				    struct device_node *node,
+				    struct fwnode_handle *fwnode,
 				    const struct adc5_data *data)
 {
-	const char *name = node->name, *channel_name;
+	const char *name = fwnode_get_name(fwnode), *channel_name;
 	u32 chan, value, varr[2];
+	u32 sid = 0;
 	int ret;
 	struct device *dev = adc->dev;
 
-	ret = of_property_read_u32(node, "reg", &chan);
+	ret = fwnode_property_read_u32(fwnode, "reg", &chan);
 	if (ret) {
 		dev_err(dev, "invalid channel number %s\n", name);
 		return ret;
 	}
 
+	/* Value read from "reg" is virtual channel number */
+
+	/* virtual channel number = sid << 8 | channel number */
+
+	if (adc->data->info == &adc7_info) {
+		sid = chan >> ADC_CHANNEL_OFFSET;
+		chan = chan & ADC_CHANNEL_MASK;
+	}
+
 	if (chan > ADC5_PARALLEL_ISENSE_VBAT_IDATA ||
 	    !data->adc_chans[chan].datasheet_name) {
 		dev_err(dev, "%s invalid channel number %d\n", name, chan);
@@ -528,18 +655,17 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 
 	/* the channel has DT description */
 	prop->channel = chan;
+	prop->sid = sid;
+
+	ret = fwnode_property_read_string(fwnode, "label", &channel_name);
+	if (ret)
+		channel_name = name;
 
-	channel_name = of_get_property(node,
-				"label", NULL) ? : node->name;
-	if (!channel_name) {
-		pr_err("Invalid channel name\n");
-		return -EINVAL;
-	}
 	prop->datasheet_name = channel_name;
 
-	ret = of_property_read_u32(node, "qcom,decimation", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &value);
 	if (!ret) {
-		ret = adc5_decimation_from_dt(value, data->decimation);
+		ret = qcom_adc5_decimation_from_dt(value, data->decimation);
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid decimation %d\n",
 				chan, value);
@@ -550,9 +676,9 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 		prop->decimation = ADC5_DECIMATION_DEFAULT;
 	}
 
-	ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2);
+	ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2);
 	if (!ret) {
-		ret = adc5_prescaling_from_dt(varr[0], varr[1]);
+		ret = qcom_adc5_prescaling_from_dt(varr[0], varr[1]);
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid pre-scaling <%d %d>\n",
 				chan, varr[0], varr[1]);
@@ -564,27 +690,26 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 			adc->data->adc_chans[prop->channel].prescale_index;
 	}
 
-	ret = of_property_read_u32(node, "qcom,hw-settle-time", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value);
 	if (!ret) {
 		u8 dig_version[2];
 
 		ret = adc5_read(adc, ADC5_USR_REVISION1, dig_version,
 							sizeof(dig_version));
-		if (ret < 0) {
+		if (ret) {
 			dev_err(dev, "Invalid dig version read %d\n", ret);
 			return ret;
 		}
 
-		pr_debug("dig_ver:minor:%d, major:%d\n", dig_version[0],
+		dev_dbg(dev, "dig_ver:minor:%d, major:%d\n", dig_version[0],
 						dig_version[1]);
 		/* Digital controller >= 5.3 have hw_settle_2 option */
-		if (dig_version[0] >= ADC5_HW_SETTLE_DIFF_MINOR &&
-			dig_version[1] >= ADC5_HW_SETTLE_DIFF_MAJOR)
-			ret = adc5_hw_settle_time_from_dt(value,
-							data->hw_settle_2);
+		if ((dig_version[0] >= ADC5_HW_SETTLE_DIFF_MINOR &&
+			dig_version[1] >= ADC5_HW_SETTLE_DIFF_MAJOR) ||
+			adc->data->info == &adc7_info)
+			ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_2);
 		else
-			ret = adc5_hw_settle_time_from_dt(value,
-							data->hw_settle_1);
+			ret = qcom_adc5_hw_settle_time_from_dt(value, data->hw_settle_1);
 
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid hw-settle-time %d us\n",
@@ -596,9 +721,9 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 		prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME;
 	}
 
-	ret = of_property_read_u32(node, "qcom,avg-samples", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value);
 	if (!ret) {
-		ret = adc5_avg_samples_from_dt(value);
+		ret = qcom_adc5_avg_samples_from_dt(value);
 		if (ret < 0) {
 			dev_err(dev, "%02x invalid avg-samples %d\n",
 				chan, value);
@@ -609,7 +734,7 @@ static int adc5_get_dt_channel_data(struct adc5_chip *adc,
 		prop->avg_samples = VADC_DEF_AVG_SAMPLES;
 	}
 
-	if (of_property_read_bool(node, "qcom,ratiometric"))
+	if (fwnode_property_read_bool(fwnode, "qcom,ratiometric"))
 		prop->cal_method = ADC5_RATIOMETRIC_CAL;
 	else
 		prop->cal_method = ADC5_ABSOLUTE_CAL;
@@ -629,6 +754,7 @@ static const struct adc5_data adc5_data_pmic = {
 	.full_scale_code_volt = 0x70e4,
 	.full_scale_code_cur = 0x2710,
 	.adc_chans = adc5_chans_pmic,
+	.info = &adc5_info,
 	.decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX])
 				{250, 420, 840},
 	.hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX])
@@ -639,10 +765,23 @@ static const struct adc5_data adc5_data_pmic = {
 				1, 2, 4, 8, 16, 32, 64, 128},
 };
 
+static const struct adc5_data adc7_data_pmic = {
+	.full_scale_code_volt = 0x70e4,
+	.adc_chans = adc7_chans_pmic,
+	.info = &adc7_info,
+	.decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX])
+				{85, 340, 1360},
+	.hw_settle_2 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX])
+				{15, 100, 200, 300, 400, 500, 600, 700,
+				1000, 2000, 4000, 8000, 16000, 32000,
+				64000, 128000},
+};
+
 static const struct adc5_data adc5_data_pmic_rev2 = {
 	.full_scale_code_volt = 0x4000,
 	.full_scale_code_cur = 0x1800,
 	.adc_chans = adc5_chans_rev2,
+	.info = &adc5_info,
 	.decimation = (unsigned int [ADC5_DECIMATION_SAMPLES_MAX])
 				{256, 512, 1024},
 	.hw_settle_1 = (unsigned int [VADC_HW_SETTLE_SAMPLES_MAX])
@@ -659,6 +798,10 @@ static const struct of_device_id adc5_match_table[] = {
 		.data = &adc5_data_pmic,
 	},
 	{
+		.compatible = "qcom,spmi-adc7",
+		.data = &adc7_data_pmic,
+	},
+	{
 		.compatible = "qcom,spmi-adc-rev2",
 		.data = &adc5_data_pmic_rev2,
 	},
@@ -666,18 +809,16 @@ static const struct of_device_id adc5_match_table[] = {
 };
 MODULE_DEVICE_TABLE(of, adc5_match_table);
 
-static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
+static int adc5_get_fw_data(struct adc5_chip *adc)
 {
 	const struct adc5_channels *adc_chan;
 	struct iio_chan_spec *iio_chan;
 	struct adc5_channel_prop prop, *chan_props;
-	struct device_node *child;
+	struct fwnode_handle *child;
 	unsigned int index = 0;
-	const struct of_device_id *id;
-	const struct adc5_data *data;
 	int ret;
 
-	adc->nchannels = of_get_available_child_count(node);
+	adc->nchannels = device_get_child_node_count(adc->dev);
 	if (!adc->nchannels)
 		return -EINVAL;
 
@@ -693,24 +834,21 @@ static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
 
 	chan_props = adc->chan_props;
 	iio_chan = adc->iio_chans;
-	id = of_match_node(adc5_match_table, node);
-	if (id)
-		data = id->data;
-	else
-		data = &adc5_data_pmic;
-	adc->data = data;
+	adc->data = device_get_match_data(adc->dev);
+	if (!adc->data)
+		adc->data = &adc5_data_pmic;
 
-	for_each_available_child_of_node(node, child) {
-		ret = adc5_get_dt_channel_data(adc, &prop, child, data);
+	device_for_each_child_node(adc->dev, child) {
+		ret = adc5_get_fw_channel_data(adc, &prop, child, adc->data);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 
 		prop.scale_fn_type =
-			data->adc_chans[prop.channel].scale_fn_type;
+			adc->data->adc_chans[prop.channel].scale_fn_type;
 		*chan_props = prop;
-		adc_chan = &data->adc_chans[prop.channel];
+		adc_chan = &adc->data->adc_chans[prop.channel];
 
 		iio_chan->channel = prop.channel;
 		iio_chan->datasheet_name = prop.datasheet_name;
@@ -728,7 +866,6 @@ static int adc5_get_dt_data(struct adc5_chip *adc, struct device_node *node)
 
 static int adc5_probe(struct platform_device *pdev)
 {
-	struct device_node *node = pdev->dev.of_node;
 	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct adc5_chip *adc;
@@ -740,7 +877,7 @@ static int adc5_probe(struct platform_device *pdev)
 	if (!regmap)
 		return -ENODEV;
 
-	ret = of_property_read_u32(node, "reg", &reg);
+	ret = device_property_read_u32(dev, "reg", &reg);
 	if (ret < 0)
 		return ret;
 
@@ -752,12 +889,13 @@ static int adc5_probe(struct platform_device *pdev)
 	adc->regmap = regmap;
 	adc->dev = dev;
 	adc->base = reg;
+
 	init_completion(&adc->complete);
 	mutex_init(&adc->lock);
 
-	ret = adc5_get_dt_data(adc, node);
+	ret = adc5_get_fw_data(adc);
 	if (ret) {
-		pr_err("adc get dt data failed\n");
+		dev_err(dev, "adc get dt data failed\n");
 		return ret;
 	}
 
@@ -773,11 +911,9 @@ static int adc5_probe(struct platform_device *pdev)
 			return ret;
 	}
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = node;
 	indio_dev->name = pdev->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->info = &adc5_info;
+	indio_dev->info = adc->data->info;
 	indio_dev->channels = adc->iio_chans;
 	indio_dev->num_channels = adc->nchannels;
 
@@ -786,7 +922,7 @@ static int adc5_probe(struct platform_device *pdev)
 
 static struct platform_driver adc5_driver = {
 	.driver = {
-		.name = "qcom-spmi-adc5.c",
+		.name = "qcom-spmi-adc5",
 		.of_match_table = adc5_match_table,
 	},
 	.probe = adc5_probe,
diff --git a/drivers/iio/adc/qcom-spmi-iadc.c b/drivers/iio/adc/qcom-spmi-iadc.c
index 46858eddf1c3..acbda6636dc5 100644
--- a/drivers/iio/adc/qcom-spmi-iadc.c
+++ b/drivers/iio/adc/qcom-spmi-iadc.c
@@ -553,8 +553,6 @@ static int iadc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = node;
 	indio_dev->name = pdev->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &iadc_info;
diff --git a/drivers/iio/adc/qcom-spmi-rradc.c b/drivers/iio/adc/qcom-spmi-rradc.c
new file mode 100644
index 000000000000..56a713766954
--- /dev/null
+++ b/drivers/iio/adc/qcom-spmi-rradc.c
@@ -0,0 +1,1022 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Copyright (c) 2016-2017, 2019, The Linux Foundation. All rights reserved.
+ * Copyright (c) 2022 Linaro Limited.
+ *  Author: Caleb Connolly <caleb.connolly@linaro.org>
+ *
+ * This driver is for the Round Robin ADC found in the pmi8998 and pm660 PMICs.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/math64.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/spmi.h>
+#include <linux/types.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/types.h>
+
+#include <soc/qcom/qcom-spmi-pmic.h>
+
+#define DRIVER_NAME "qcom-spmi-rradc"
+
+#define RR_ADC_EN_CTL 0x46
+#define RR_ADC_SKIN_TEMP_LSB 0x50
+#define RR_ADC_SKIN_TEMP_MSB 0x51
+#define RR_ADC_CTL 0x52
+#define RR_ADC_CTL_CONTINUOUS_SEL BIT(3)
+#define RR_ADC_LOG 0x53
+#define RR_ADC_LOG_CLR_CTRL BIT(0)
+
+#define RR_ADC_FAKE_BATT_LOW_LSB 0x58
+#define RR_ADC_FAKE_BATT_LOW_MSB 0x59
+#define RR_ADC_FAKE_BATT_HIGH_LSB 0x5A
+#define RR_ADC_FAKE_BATT_HIGH_MSB 0x5B
+
+#define RR_ADC_BATT_ID_CTRL 0x60
+#define RR_ADC_BATT_ID_CTRL_CHANNEL_CONV BIT(0)
+#define RR_ADC_BATT_ID_TRIGGER 0x61
+#define RR_ADC_BATT_ID_STS 0x62
+#define RR_ADC_BATT_ID_CFG 0x63
+#define BATT_ID_SETTLE_MASK GENMASK(7, 5)
+#define RR_ADC_BATT_ID_5_LSB 0x66
+#define RR_ADC_BATT_ID_5_MSB 0x67
+#define RR_ADC_BATT_ID_15_LSB 0x68
+#define RR_ADC_BATT_ID_15_MSB 0x69
+#define RR_ADC_BATT_ID_150_LSB 0x6A
+#define RR_ADC_BATT_ID_150_MSB 0x6B
+
+#define RR_ADC_BATT_THERM_CTRL 0x70
+#define RR_ADC_BATT_THERM_TRIGGER 0x71
+#define RR_ADC_BATT_THERM_STS 0x72
+#define RR_ADC_BATT_THERM_CFG 0x73
+#define RR_ADC_BATT_THERM_LSB 0x74
+#define RR_ADC_BATT_THERM_MSB 0x75
+#define RR_ADC_BATT_THERM_FREQ 0x76
+
+#define RR_ADC_AUX_THERM_CTRL 0x80
+#define RR_ADC_AUX_THERM_TRIGGER 0x81
+#define RR_ADC_AUX_THERM_STS 0x82
+#define RR_ADC_AUX_THERM_CFG 0x83
+#define RR_ADC_AUX_THERM_LSB 0x84
+#define RR_ADC_AUX_THERM_MSB 0x85
+
+#define RR_ADC_SKIN_HOT 0x86
+#define RR_ADC_SKIN_TOO_HOT 0x87
+
+#define RR_ADC_AUX_THERM_C1 0x88
+#define RR_ADC_AUX_THERM_C2 0x89
+#define RR_ADC_AUX_THERM_C3 0x8A
+#define RR_ADC_AUX_THERM_HALF_RANGE 0x8B
+
+#define RR_ADC_USB_IN_V_CTRL 0x90
+#define RR_ADC_USB_IN_V_TRIGGER 0x91
+#define RR_ADC_USB_IN_V_STS 0x92
+#define RR_ADC_USB_IN_V_LSB 0x94
+#define RR_ADC_USB_IN_V_MSB 0x95
+#define RR_ADC_USB_IN_I_CTRL 0x98
+#define RR_ADC_USB_IN_I_TRIGGER 0x99
+#define RR_ADC_USB_IN_I_STS 0x9A
+#define RR_ADC_USB_IN_I_LSB 0x9C
+#define RR_ADC_USB_IN_I_MSB 0x9D
+
+#define RR_ADC_DC_IN_V_CTRL 0xA0
+#define RR_ADC_DC_IN_V_TRIGGER 0xA1
+#define RR_ADC_DC_IN_V_STS 0xA2
+#define RR_ADC_DC_IN_V_LSB 0xA4
+#define RR_ADC_DC_IN_V_MSB 0xA5
+#define RR_ADC_DC_IN_I_CTRL 0xA8
+#define RR_ADC_DC_IN_I_TRIGGER 0xA9
+#define RR_ADC_DC_IN_I_STS 0xAA
+#define RR_ADC_DC_IN_I_LSB 0xAC
+#define RR_ADC_DC_IN_I_MSB 0xAD
+
+#define RR_ADC_PMI_DIE_TEMP_CTRL 0xB0
+#define RR_ADC_PMI_DIE_TEMP_TRIGGER 0xB1
+#define RR_ADC_PMI_DIE_TEMP_STS 0xB2
+#define RR_ADC_PMI_DIE_TEMP_CFG 0xB3
+#define RR_ADC_PMI_DIE_TEMP_LSB 0xB4
+#define RR_ADC_PMI_DIE_TEMP_MSB 0xB5
+
+#define RR_ADC_CHARGER_TEMP_CTRL 0xB8
+#define RR_ADC_CHARGER_TEMP_TRIGGER 0xB9
+#define RR_ADC_CHARGER_TEMP_STS 0xBA
+#define RR_ADC_CHARGER_TEMP_CFG 0xBB
+#define RR_ADC_CHARGER_TEMP_LSB 0xBC
+#define RR_ADC_CHARGER_TEMP_MSB 0xBD
+#define RR_ADC_CHARGER_HOT 0xBE
+#define RR_ADC_CHARGER_TOO_HOT 0xBF
+
+#define RR_ADC_GPIO_CTRL 0xC0
+#define RR_ADC_GPIO_TRIGGER 0xC1
+#define RR_ADC_GPIO_STS 0xC2
+#define RR_ADC_GPIO_LSB 0xC4
+#define RR_ADC_GPIO_MSB 0xC5
+
+#define RR_ADC_ATEST_CTRL 0xC8
+#define RR_ADC_ATEST_TRIGGER 0xC9
+#define RR_ADC_ATEST_STS 0xCA
+#define RR_ADC_ATEST_LSB 0xCC
+#define RR_ADC_ATEST_MSB 0xCD
+#define RR_ADC_SEC_ACCESS 0xD0
+
+#define RR_ADC_PERPH_RESET_CTL2 0xD9
+#define RR_ADC_PERPH_RESET_CTL3 0xDA
+#define RR_ADC_PERPH_RESET_CTL4 0xDB
+#define RR_ADC_INT_TEST1 0xE0
+#define RR_ADC_INT_TEST_VAL 0xE1
+
+#define RR_ADC_TM_TRIGGER_CTRLS 0xE2
+#define RR_ADC_TM_ADC_CTRLS 0xE3
+#define RR_ADC_TM_CNL_CTRL 0xE4
+#define RR_ADC_TM_BATT_ID_CTRL 0xE5
+#define RR_ADC_TM_THERM_CTRL 0xE6
+#define RR_ADC_TM_CONV_STS 0xE7
+#define RR_ADC_TM_ADC_READ_LSB 0xE8
+#define RR_ADC_TM_ADC_READ_MSB 0xE9
+#define RR_ADC_TM_ATEST_MUX_1 0xEA
+#define RR_ADC_TM_ATEST_MUX_2 0xEB
+#define RR_ADC_TM_REFERENCES 0xED
+#define RR_ADC_TM_MISC_CTL 0xEE
+#define RR_ADC_TM_RR_CTRL 0xEF
+
+#define RR_ADC_TRIGGER_EVERY_CYCLE BIT(7)
+#define RR_ADC_TRIGGER_CTL BIT(0)
+
+#define RR_ADC_BATT_ID_RANGE 820
+
+#define RR_ADC_BITS 10
+#define RR_ADC_CHAN_MSB (1 << RR_ADC_BITS)
+#define RR_ADC_FS_VOLTAGE_MV 2500
+
+/* BATT_THERM 0.25K/LSB */
+#define RR_ADC_BATT_THERM_LSB_K 4
+
+#define RR_ADC_TEMP_FS_VOLTAGE_NUM 5000000
+#define RR_ADC_TEMP_FS_VOLTAGE_DEN 3
+#define RR_ADC_DIE_TEMP_OFFSET 601400
+#define RR_ADC_DIE_TEMP_SLOPE 2
+#define RR_ADC_DIE_TEMP_OFFSET_MILLI_DEGC 25000
+
+#define RR_ADC_CHG_TEMP_GF_OFFSET_UV 1303168
+#define RR_ADC_CHG_TEMP_GF_SLOPE_UV_PER_C 3784
+#define RR_ADC_CHG_TEMP_SMIC_OFFSET_UV 1338433
+#define RR_ADC_CHG_TEMP_SMIC_SLOPE_UV_PER_C 3655
+#define RR_ADC_CHG_TEMP_660_GF_OFFSET_UV 1309001
+#define RR_ADC_CHG_TEMP_660_GF_SLOPE_UV_PER_C 3403
+#define RR_ADC_CHG_TEMP_660_SMIC_OFFSET_UV 1295898
+#define RR_ADC_CHG_TEMP_660_SMIC_SLOPE_UV_PER_C 3596
+#define RR_ADC_CHG_TEMP_660_MGNA_OFFSET_UV 1314779
+#define RR_ADC_CHG_TEMP_660_MGNA_SLOPE_UV_PER_C 3496
+#define RR_ADC_CHG_TEMP_OFFSET_MILLI_DEGC 25000
+#define RR_ADC_CHG_THRESHOLD_SCALE 4
+
+#define RR_ADC_VOLT_INPUT_FACTOR 8
+#define RR_ADC_CURR_INPUT_FACTOR 2000
+#define RR_ADC_CURR_USBIN_INPUT_FACTOR_MIL 1886
+#define RR_ADC_CURR_USBIN_660_FACTOR_MIL 9
+#define RR_ADC_CURR_USBIN_660_UV_VAL 579500
+
+#define RR_ADC_GPIO_FS_RANGE 5000
+#define RR_ADC_COHERENT_CHECK_RETRY 5
+#define RR_ADC_CHAN_MAX_CONTINUOUS_BUFFER_LEN 16
+
+#define RR_ADC_STS_CHANNEL_READING_MASK GENMASK(1, 0)
+#define RR_ADC_STS_CHANNEL_STS BIT(1)
+
+#define RR_ADC_TP_REV_VERSION1 21
+#define RR_ADC_TP_REV_VERSION2 29
+#define RR_ADC_TP_REV_VERSION3 32
+
+#define RRADC_BATT_ID_DELAY_MAX 8
+
+enum rradc_channel_id {
+	RR_ADC_BATT_ID = 0,
+	RR_ADC_BATT_THERM,
+	RR_ADC_SKIN_TEMP,
+	RR_ADC_USBIN_I,
+	RR_ADC_USBIN_V,
+	RR_ADC_DCIN_I,
+	RR_ADC_DCIN_V,
+	RR_ADC_DIE_TEMP,
+	RR_ADC_CHG_TEMP,
+	RR_ADC_GPIO,
+	RR_ADC_CHAN_MAX
+};
+
+struct rradc_chip;
+
+/**
+ * struct rradc_channel - rradc channel data
+ * @label:		channel label
+ * @lsb:		Channel least significant byte
+ * @status:		Channel status address
+ * @size:		number of bytes to read
+ * @trigger_addr:	Trigger address, trigger is only used on some channels
+ * @trigger_mask:	Trigger mask
+ * @scale_fn:		Post process callback for channels which can't be exposed
+ *			as offset + scale.
+ */
+struct rradc_channel {
+	const char *label;
+	u8 lsb;
+	u8 status;
+	int size;
+	int trigger_addr;
+	int trigger_mask;
+	int (*scale_fn)(struct rradc_chip *chip, u16 adc_code, int *result);
+};
+
+struct rradc_chip {
+	struct device *dev;
+	const struct qcom_spmi_pmic *pmic;
+	/*
+	 * Lock held while doing channel conversion
+	 * involving multiple register read/writes
+	 */
+	struct mutex conversion_lock;
+	struct regmap *regmap;
+	u32 base;
+	int batt_id_delay;
+	u16 batt_id_data;
+};
+
+static const int batt_id_delays[] = { 0, 1, 4, 12, 20, 40, 60, 80 };
+static const struct rradc_channel rradc_chans[RR_ADC_CHAN_MAX];
+static const struct iio_chan_spec rradc_iio_chans[RR_ADC_CHAN_MAX];
+
+static int rradc_read(struct rradc_chip *chip, u16 addr, __le16 *buf, int len)
+{
+	int ret, retry_cnt = 0;
+	__le16 data_check[RR_ADC_CHAN_MAX_CONTINUOUS_BUFFER_LEN / 2];
+
+	if (len > RR_ADC_CHAN_MAX_CONTINUOUS_BUFFER_LEN) {
+		dev_err(chip->dev,
+			"Can't read more than %d bytes, but asked to read %d bytes.\n",
+			RR_ADC_CHAN_MAX_CONTINUOUS_BUFFER_LEN, len);
+		return -EINVAL;
+	}
+
+	while (retry_cnt < RR_ADC_COHERENT_CHECK_RETRY) {
+		ret = regmap_bulk_read(chip->regmap, chip->base + addr, buf,
+				       len);
+		if (ret < 0) {
+			dev_err(chip->dev, "rr_adc reg 0x%x failed :%d\n", addr,
+				ret);
+			return ret;
+		}
+
+		ret = regmap_bulk_read(chip->regmap, chip->base + addr,
+				       data_check, len);
+		if (ret < 0) {
+			dev_err(chip->dev, "rr_adc reg 0x%x failed :%d\n", addr,
+				ret);
+			return ret;
+		}
+
+		if (memcmp(buf, data_check, len) != 0) {
+			retry_cnt++;
+			dev_dbg(chip->dev,
+				"coherent read error, retry_cnt:%d\n",
+				retry_cnt);
+			continue;
+		}
+
+		break;
+	}
+
+	if (retry_cnt == RR_ADC_COHERENT_CHECK_RETRY)
+		dev_err(chip->dev, "Retry exceeded for coherency check\n");
+
+	return ret;
+}
+
+static int rradc_get_fab_coeff(struct rradc_chip *chip, int64_t *offset,
+			       int64_t *slope)
+{
+	if (chip->pmic->subtype == PM660_SUBTYPE) {
+		switch (chip->pmic->fab_id) {
+		case PM660_FAB_ID_GF:
+			*offset = RR_ADC_CHG_TEMP_660_GF_OFFSET_UV;
+			*slope = RR_ADC_CHG_TEMP_660_GF_SLOPE_UV_PER_C;
+			return 0;
+		case PM660_FAB_ID_TSMC:
+			*offset = RR_ADC_CHG_TEMP_660_SMIC_OFFSET_UV;
+			*slope = RR_ADC_CHG_TEMP_660_SMIC_SLOPE_UV_PER_C;
+			return 0;
+		default:
+			*offset = RR_ADC_CHG_TEMP_660_MGNA_OFFSET_UV;
+			*slope = RR_ADC_CHG_TEMP_660_MGNA_SLOPE_UV_PER_C;
+		}
+	} else if (chip->pmic->subtype == PMI8998_SUBTYPE) {
+		switch (chip->pmic->fab_id) {
+		case PMI8998_FAB_ID_GF:
+			*offset = RR_ADC_CHG_TEMP_GF_OFFSET_UV;
+			*slope = RR_ADC_CHG_TEMP_GF_SLOPE_UV_PER_C;
+			return 0;
+		case PMI8998_FAB_ID_SMIC:
+			*offset = RR_ADC_CHG_TEMP_SMIC_OFFSET_UV;
+			*slope = RR_ADC_CHG_TEMP_SMIC_SLOPE_UV_PER_C;
+			return 0;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return -EINVAL;
+}
+
+/*
+ * These functions explicitly cast int64_t to int.
+ * They will never overflow, as the values are small enough.
+ */
+static int rradc_post_process_batt_id(struct rradc_chip *chip, u16 adc_code,
+				      int *result_ohms)
+{
+	uint32_t current_value;
+	int64_t r_id;
+
+	current_value = chip->batt_id_data;
+	r_id = ((int64_t)adc_code * RR_ADC_FS_VOLTAGE_MV);
+	r_id = div64_s64(r_id, (RR_ADC_CHAN_MSB * current_value));
+	*result_ohms = (int)(r_id * MILLI);
+
+	return 0;
+}
+
+static int rradc_enable_continuous_mode(struct rradc_chip *chip)
+{
+	int ret;
+
+	/* Clear channel log */
+	ret = regmap_update_bits(chip->regmap, chip->base + RR_ADC_LOG,
+				 RR_ADC_LOG_CLR_CTRL, RR_ADC_LOG_CLR_CTRL);
+	if (ret < 0) {
+		dev_err(chip->dev, "log ctrl update to clear failed:%d\n", ret);
+		return ret;
+	}
+
+	ret = regmap_update_bits(chip->regmap, chip->base + RR_ADC_LOG,
+				 RR_ADC_LOG_CLR_CTRL, 0);
+	if (ret < 0) {
+		dev_err(chip->dev, "log ctrl update to not clear failed:%d\n",
+			ret);
+		return ret;
+	}
+
+	/* Switch to continuous mode */
+	ret = regmap_update_bits(chip->regmap, chip->base + RR_ADC_CTL,
+				 RR_ADC_CTL_CONTINUOUS_SEL,
+				 RR_ADC_CTL_CONTINUOUS_SEL);
+	if (ret < 0)
+		dev_err(chip->dev, "Update to continuous mode failed:%d\n",
+			ret);
+
+	return ret;
+}
+
+static int rradc_disable_continuous_mode(struct rradc_chip *chip)
+{
+	int ret;
+
+	/* Switch to non continuous mode */
+	ret = regmap_update_bits(chip->regmap, chip->base + RR_ADC_CTL,
+				 RR_ADC_CTL_CONTINUOUS_SEL, 0);
+	if (ret < 0)
+		dev_err(chip->dev, "Update to non-continuous mode failed:%d\n",
+			ret);
+
+	return ret;
+}
+
+static bool rradc_is_ready(struct rradc_chip *chip,
+			   enum rradc_channel_id chan_address)
+{
+	const struct rradc_channel *chan = &rradc_chans[chan_address];
+	int ret;
+	unsigned int status, mask;
+
+	/* BATT_ID STS bit does not get set initially */
+	switch (chan_address) {
+	case RR_ADC_BATT_ID:
+		mask = RR_ADC_STS_CHANNEL_STS;
+		break;
+	default:
+		mask = RR_ADC_STS_CHANNEL_READING_MASK;
+		break;
+	}
+
+	ret = regmap_read(chip->regmap, chip->base + chan->status, &status);
+	if (ret < 0 || !(status & mask))
+		return false;
+
+	return true;
+}
+
+static int rradc_read_status_in_cont_mode(struct rradc_chip *chip,
+					  enum rradc_channel_id chan_address)
+{
+	const struct rradc_channel *chan = &rradc_chans[chan_address];
+	const struct iio_chan_spec *iio_chan = &rradc_iio_chans[chan_address];
+	int ret, i;
+
+	if (chan->trigger_mask == 0) {
+		dev_err(chip->dev, "Channel doesn't have a trigger mask\n");
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(chip->regmap, chip->base + chan->trigger_addr,
+				 chan->trigger_mask, chan->trigger_mask);
+	if (ret < 0) {
+		dev_err(chip->dev,
+			"Failed to apply trigger for channel '%s' ret=%d\n",
+			iio_chan->extend_name, ret);
+		return ret;
+	}
+
+	ret = rradc_enable_continuous_mode(chip);
+	if (ret < 0) {
+		dev_err(chip->dev, "Failed to switch to continuous mode\n");
+		goto disable_trigger;
+	}
+
+	/*
+	 * The wait/sleep values were found through trial and error,
+	 * this is mostly for the battery ID channel which takes some
+	 * time to settle.
+	 */
+	for (i = 0; i < 5; i++) {
+		if (rradc_is_ready(chip, chan_address))
+			break;
+		usleep_range(50000, 50000 + 500);
+	}
+
+	if (i == 5) {
+		dev_err(chip->dev, "Channel '%s' is not ready\n",
+			iio_chan->extend_name);
+		ret = -ETIMEDOUT;
+	}
+
+	rradc_disable_continuous_mode(chip);
+
+disable_trigger:
+	regmap_update_bits(chip->regmap, chip->base + chan->trigger_addr,
+			   chan->trigger_mask, 0);
+
+	return ret;
+}
+
+static int rradc_prepare_batt_id_conversion(struct rradc_chip *chip,
+					    enum rradc_channel_id chan_address,
+					    u16 *data)
+{
+	int ret;
+
+	ret = regmap_update_bits(chip->regmap, chip->base + RR_ADC_BATT_ID_CTRL,
+				 RR_ADC_BATT_ID_CTRL_CHANNEL_CONV,
+				 RR_ADC_BATT_ID_CTRL_CHANNEL_CONV);
+	if (ret < 0) {
+		dev_err(chip->dev, "Enabling BATT ID channel failed:%d\n", ret);
+		return ret;
+	}
+
+	ret = regmap_update_bits(chip->regmap,
+				 chip->base + RR_ADC_BATT_ID_TRIGGER,
+				 RR_ADC_TRIGGER_CTL, RR_ADC_TRIGGER_CTL);
+	if (ret < 0) {
+		dev_err(chip->dev, "BATT_ID trigger set failed:%d\n", ret);
+		goto out_disable_batt_id;
+	}
+
+	ret = rradc_read_status_in_cont_mode(chip, chan_address);
+
+	/* Reset registers back to default values */
+	regmap_update_bits(chip->regmap, chip->base + RR_ADC_BATT_ID_TRIGGER,
+			   RR_ADC_TRIGGER_CTL, 0);
+
+out_disable_batt_id:
+	regmap_update_bits(chip->regmap, chip->base + RR_ADC_BATT_ID_CTRL,
+			   RR_ADC_BATT_ID_CTRL_CHANNEL_CONV, 0);
+
+	return ret;
+}
+
+static int rradc_do_conversion(struct rradc_chip *chip,
+			       enum rradc_channel_id chan_address, u16 *data)
+{
+	const struct rradc_channel *chan = &rradc_chans[chan_address];
+	const struct iio_chan_spec *iio_chan = &rradc_iio_chans[chan_address];
+	int ret;
+	__le16 buf[3];
+
+	mutex_lock(&chip->conversion_lock);
+
+	switch (chan_address) {
+	case RR_ADC_BATT_ID:
+		ret = rradc_prepare_batt_id_conversion(chip, chan_address, data);
+		if (ret < 0) {
+			dev_err(chip->dev, "Battery ID conversion failed:%d\n",
+				ret);
+			goto unlock_out;
+		}
+		break;
+
+	case RR_ADC_USBIN_V:
+	case RR_ADC_DIE_TEMP:
+		ret = rradc_read_status_in_cont_mode(chip, chan_address);
+		if (ret < 0) {
+			dev_err(chip->dev,
+				"Error reading in continuous mode:%d\n", ret);
+			goto unlock_out;
+		}
+		break;
+	default:
+		if (!rradc_is_ready(chip, chan_address)) {
+			/*
+			 * Usually this means the channel isn't attached, for example
+			 * the in_voltage_usbin_v_input channel will not be ready if
+			 * no USB cable is attached
+			 */
+			dev_dbg(chip->dev, "channel '%s' is not ready\n",
+				iio_chan->extend_name);
+			ret = -ENODATA;
+			goto unlock_out;
+		}
+		break;
+	}
+
+	ret = rradc_read(chip, chan->lsb, buf, chan->size);
+	if (ret) {
+		dev_err(chip->dev, "read data failed\n");
+		goto unlock_out;
+	}
+
+	/*
+	 * For the battery ID we read the register for every ID ADC and then
+	 * see which one is actually connected.
+	 */
+	if (chan_address == RR_ADC_BATT_ID) {
+		u16 batt_id_150 = le16_to_cpu(buf[2]);
+		u16 batt_id_15 = le16_to_cpu(buf[1]);
+		u16 batt_id_5 = le16_to_cpu(buf[0]);
+
+		if (!batt_id_150 && !batt_id_15 && !batt_id_5) {
+			dev_err(chip->dev,
+				"Invalid batt_id values with all zeros\n");
+			ret = -EINVAL;
+			goto unlock_out;
+		}
+
+		if (batt_id_150 <= RR_ADC_BATT_ID_RANGE) {
+			*data = batt_id_150;
+			chip->batt_id_data = 150;
+		} else if (batt_id_15 <= RR_ADC_BATT_ID_RANGE) {
+			*data = batt_id_15;
+			chip->batt_id_data = 15;
+		} else {
+			*data = batt_id_5;
+			chip->batt_id_data = 5;
+		}
+	} else {
+		/*
+		 * All of the other channels are either 1 or 2 bytes.
+		 * We can rely on the second byte being 0 for 1-byte channels.
+		 */
+		*data = le16_to_cpu(buf[0]);
+	}
+
+unlock_out:
+	mutex_unlock(&chip->conversion_lock);
+
+	return ret;
+}
+
+static int rradc_read_scale(struct rradc_chip *chip, int chan_address, int *val,
+			    int *val2)
+{
+	int64_t fab_offset, fab_slope;
+	int ret;
+
+	ret = rradc_get_fab_coeff(chip, &fab_offset, &fab_slope);
+	if (ret < 0) {
+		dev_err(chip->dev, "Unable to get fab id coefficients\n");
+		return -EINVAL;
+	}
+
+	switch (chan_address) {
+	case RR_ADC_SKIN_TEMP:
+		*val = MILLI;
+		*val2 = RR_ADC_BATT_THERM_LSB_K;
+		return IIO_VAL_FRACTIONAL;
+	case RR_ADC_USBIN_I:
+		*val = RR_ADC_CURR_USBIN_INPUT_FACTOR_MIL *
+		       RR_ADC_FS_VOLTAGE_MV;
+		*val2 = RR_ADC_CHAN_MSB;
+		return IIO_VAL_FRACTIONAL;
+	case RR_ADC_DCIN_I:
+		*val = RR_ADC_CURR_INPUT_FACTOR * RR_ADC_FS_VOLTAGE_MV;
+		*val2 = RR_ADC_CHAN_MSB;
+		return IIO_VAL_FRACTIONAL;
+	case RR_ADC_USBIN_V:
+	case RR_ADC_DCIN_V:
+		*val = RR_ADC_VOLT_INPUT_FACTOR * RR_ADC_FS_VOLTAGE_MV * MILLI;
+		*val2 = RR_ADC_CHAN_MSB;
+		return IIO_VAL_FRACTIONAL;
+	case RR_ADC_GPIO:
+		*val = RR_ADC_GPIO_FS_RANGE;
+		*val2 = RR_ADC_CHAN_MSB;
+		return IIO_VAL_FRACTIONAL;
+	case RR_ADC_CHG_TEMP:
+		/*
+		 * We divide val2 by MILLI instead of multiplying val
+		 * to avoid an integer overflow.
+		 */
+		*val = -RR_ADC_TEMP_FS_VOLTAGE_NUM;
+		*val2 = div64_s64(RR_ADC_TEMP_FS_VOLTAGE_DEN * RR_ADC_CHAN_MSB *
+					  fab_slope,
+				  MILLI);
+
+		return IIO_VAL_FRACTIONAL;
+	case RR_ADC_DIE_TEMP:
+		*val = RR_ADC_TEMP_FS_VOLTAGE_NUM;
+		*val2 = RR_ADC_TEMP_FS_VOLTAGE_DEN * RR_ADC_CHAN_MSB *
+			RR_ADC_DIE_TEMP_SLOPE;
+
+		return IIO_VAL_FRACTIONAL;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rradc_read_offset(struct rradc_chip *chip, int chan_address, int *val)
+{
+	int64_t fab_offset, fab_slope;
+	int64_t offset1, offset2;
+	int ret;
+
+	switch (chan_address) {
+	case RR_ADC_SKIN_TEMP:
+		/*
+		 * Offset from kelvin to degC, divided by the
+		 * scale factor (250). We lose some precision here.
+		 * 273150 / 250 = 1092.6
+		 */
+		*val = div64_s64(ABSOLUTE_ZERO_MILLICELSIUS,
+				 (MILLI / RR_ADC_BATT_THERM_LSB_K));
+		return IIO_VAL_INT;
+	case RR_ADC_CHG_TEMP:
+		ret = rradc_get_fab_coeff(chip, &fab_offset, &fab_slope);
+		if (ret < 0) {
+			dev_err(chip->dev,
+				"Unable to get fab id coefficients\n");
+			return -EINVAL;
+		}
+		offset1 = -(fab_offset * RR_ADC_TEMP_FS_VOLTAGE_DEN *
+			    RR_ADC_CHAN_MSB);
+		offset1 += (int64_t)RR_ADC_TEMP_FS_VOLTAGE_NUM / 2ULL;
+		offset1 = div64_s64(offset1,
+				    (int64_t)(RR_ADC_TEMP_FS_VOLTAGE_NUM));
+
+		offset2 = (int64_t)RR_ADC_CHG_TEMP_OFFSET_MILLI_DEGC *
+			  RR_ADC_TEMP_FS_VOLTAGE_DEN * RR_ADC_CHAN_MSB *
+			  (int64_t)fab_slope;
+		offset2 += ((int64_t)MILLI * RR_ADC_TEMP_FS_VOLTAGE_NUM) / 2;
+		offset2 = div64_s64(
+			offset2, ((int64_t)MILLI * RR_ADC_TEMP_FS_VOLTAGE_NUM));
+
+		/*
+		 * The -1 is to compensate for lost precision.
+		 * It should actually be -0.7906976744186046.
+		 * This works out to every value being off
+		 * by about +0.091 degrees C after applying offset and scale.
+		 */
+		*val = (int)(offset1 - offset2 - 1);
+		return IIO_VAL_INT;
+	case RR_ADC_DIE_TEMP:
+		offset1 = -RR_ADC_DIE_TEMP_OFFSET *
+			  (int64_t)RR_ADC_TEMP_FS_VOLTAGE_DEN *
+			  (int64_t)RR_ADC_CHAN_MSB;
+		offset1 = div64_s64(offset1, RR_ADC_TEMP_FS_VOLTAGE_NUM);
+
+		offset2 = -(int64_t)RR_ADC_CHG_TEMP_OFFSET_MILLI_DEGC *
+			  RR_ADC_TEMP_FS_VOLTAGE_DEN * RR_ADC_CHAN_MSB *
+			  RR_ADC_DIE_TEMP_SLOPE;
+		offset2 = div64_s64(offset2,
+				    ((int64_t)RR_ADC_TEMP_FS_VOLTAGE_NUM));
+
+		/*
+		 * The result is -339, it should be -338.69789, this results
+		 * in the calculated die temp being off by
+		 * -0.004 - -0.0175 degrees C
+		 */
+		*val = (int)(offset1 - offset2);
+		return IIO_VAL_INT;
+	default:
+		break;
+	}
+	return -EINVAL;
+}
+
+static int rradc_read_raw(struct iio_dev *indio_dev,
+			  struct iio_chan_spec const *chan_spec, int *val,
+			  int *val2, long mask)
+{
+	struct rradc_chip *chip = iio_priv(indio_dev);
+	const struct rradc_channel *chan;
+	int ret;
+	u16 adc_code;
+
+	if (chan_spec->address >= RR_ADC_CHAN_MAX) {
+		dev_err(chip->dev, "Invalid channel index:%lu\n",
+			chan_spec->address);
+		return -EINVAL;
+	}
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return rradc_read_scale(chip, chan_spec->address, val, val2);
+	case IIO_CHAN_INFO_OFFSET:
+		return rradc_read_offset(chip, chan_spec->address, val);
+	case IIO_CHAN_INFO_RAW:
+		ret = rradc_do_conversion(chip, chan_spec->address, &adc_code);
+		if (ret < 0)
+			return ret;
+
+		*val = adc_code;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_PROCESSED:
+		chan = &rradc_chans[chan_spec->address];
+		if (!chan->scale_fn)
+			return -EINVAL;
+		ret = rradc_do_conversion(chip, chan_spec->address, &adc_code);
+		if (ret < 0)
+			return ret;
+
+		*val = chan->scale_fn(chip, adc_code, val);
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rradc_read_label(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, char *label)
+{
+	return snprintf(label, PAGE_SIZE, "%s\n",
+			rradc_chans[chan->address].label);
+}
+
+static const struct iio_info rradc_info = {
+	.read_raw = rradc_read_raw,
+	.read_label = rradc_read_label,
+};
+
+static const struct rradc_channel rradc_chans[RR_ADC_CHAN_MAX] = {
+	{
+		.label = "batt_id",
+		.scale_fn = rradc_post_process_batt_id,
+		.lsb = RR_ADC_BATT_ID_5_LSB,
+		.status = RR_ADC_BATT_ID_STS,
+		.size = 6,
+		.trigger_addr = RR_ADC_BATT_ID_TRIGGER,
+		.trigger_mask = BIT(0),
+	}, {
+		.label = "batt",
+		.lsb = RR_ADC_BATT_THERM_LSB,
+		.status = RR_ADC_BATT_THERM_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_BATT_THERM_TRIGGER,
+	}, {
+		.label = "pmi8998_skin",
+		.lsb = RR_ADC_SKIN_TEMP_LSB,
+		.status = RR_ADC_AUX_THERM_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_AUX_THERM_TRIGGER,
+	}, {
+		.label = "usbin_i",
+		.lsb = RR_ADC_USB_IN_I_LSB,
+		.status = RR_ADC_USB_IN_I_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_USB_IN_I_TRIGGER,
+	}, {
+		.label = "usbin_v",
+		.lsb = RR_ADC_USB_IN_V_LSB,
+		.status = RR_ADC_USB_IN_V_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_USB_IN_V_TRIGGER,
+		.trigger_mask = BIT(7),
+	}, {
+		.label = "dcin_i",
+		.lsb = RR_ADC_DC_IN_I_LSB,
+		.status = RR_ADC_DC_IN_I_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_DC_IN_I_TRIGGER,
+	}, {
+		.label = "dcin_v",
+		.lsb = RR_ADC_DC_IN_V_LSB,
+		.status = RR_ADC_DC_IN_V_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_DC_IN_V_TRIGGER,
+	}, {
+		.label = "pmi8998_die",
+		.lsb = RR_ADC_PMI_DIE_TEMP_LSB,
+		.status = RR_ADC_PMI_DIE_TEMP_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_PMI_DIE_TEMP_TRIGGER,
+		.trigger_mask = RR_ADC_TRIGGER_EVERY_CYCLE,
+	}, {
+		.label = "chg",
+		.lsb = RR_ADC_CHARGER_TEMP_LSB,
+		.status = RR_ADC_CHARGER_TEMP_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_CHARGER_TEMP_TRIGGER,
+	}, {
+		.label = "gpio",
+		.lsb = RR_ADC_GPIO_LSB,
+		.status = RR_ADC_GPIO_STS,
+		.size = 2,
+		.trigger_addr = RR_ADC_GPIO_TRIGGER,
+	},
+};
+
+static const struct iio_chan_spec rradc_iio_chans[RR_ADC_CHAN_MAX] = {
+	{
+		.type = IIO_RESISTANCE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.address = RR_ADC_BATT_ID,
+		.channel = 0,
+		.indexed = 1,
+	}, {
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.address = RR_ADC_BATT_THERM,
+		.channel = 0,
+		.indexed = 1,
+	}, {
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OFFSET),
+		.address = RR_ADC_SKIN_TEMP,
+		.channel = 1,
+		.indexed = 1,
+	}, {
+		.type = IIO_CURRENT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.address = RR_ADC_USBIN_I,
+		.channel = 0,
+		.indexed = 1,
+	}, {
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.address = RR_ADC_USBIN_V,
+		.channel = 0,
+		.indexed = 1,
+	}, {
+		.type = IIO_CURRENT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.address = RR_ADC_DCIN_I,
+		.channel = 1,
+		.indexed = 1,
+	}, {
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.address = RR_ADC_DCIN_V,
+		.channel = 1,
+		.indexed = 1,
+	}, {
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OFFSET),
+		.address = RR_ADC_DIE_TEMP,
+		.channel = 2,
+		.indexed = 1,
+	}, {
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_OFFSET) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.address = RR_ADC_CHG_TEMP,
+		.channel = 3,
+		.indexed = 1,
+	}, {
+		.type = IIO_VOLTAGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.address = RR_ADC_GPIO,
+		.channel = 2,
+		.indexed = 1,
+	},
+};
+
+static int rradc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct iio_dev *indio_dev;
+	struct rradc_chip *chip;
+	int ret, i, batt_id_delay;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*chip));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	chip = iio_priv(indio_dev);
+	chip->regmap = dev_get_regmap(pdev->dev.parent, NULL);
+	if (!chip->regmap) {
+		dev_err(dev, "Couldn't get parent's regmap\n");
+		return -EINVAL;
+	}
+
+	chip->dev = dev;
+	mutex_init(&chip->conversion_lock);
+
+	ret = device_property_read_u32(dev, "reg", &chip->base);
+	if (ret < 0) {
+		dev_err(chip->dev, "Couldn't find reg address, ret = %d\n",
+			ret);
+		return ret;
+	}
+
+	batt_id_delay = -1;
+	ret = device_property_read_u32(dev, "qcom,batt-id-delay-ms",
+				       &batt_id_delay);
+	if (!ret) {
+		for (i = 0; i < RRADC_BATT_ID_DELAY_MAX; i++) {
+			if (batt_id_delay == batt_id_delays[i])
+				break;
+		}
+		if (i == RRADC_BATT_ID_DELAY_MAX)
+			batt_id_delay = -1;
+	}
+
+	if (batt_id_delay >= 0) {
+		batt_id_delay = FIELD_PREP(BATT_ID_SETTLE_MASK, batt_id_delay);
+		ret = regmap_update_bits(chip->regmap,
+					 chip->base + RR_ADC_BATT_ID_CFG,
+					 batt_id_delay, batt_id_delay);
+		if (ret < 0) {
+			dev_err(chip->dev,
+				"BATT_ID settling time config failed:%d\n",
+				ret);
+		}
+	}
+
+	/* Get the PMIC revision, we need it to handle some varying coefficients */
+	chip->pmic = qcom_pmic_get(chip->dev);
+	if (IS_ERR(chip->pmic)) {
+		dev_err(chip->dev, "Unable to get reference to PMIC device\n");
+		return PTR_ERR(chip->pmic);
+	}
+
+	switch (chip->pmic->subtype) {
+	case PMI8998_SUBTYPE:
+		indio_dev->name = "pmi8998-rradc";
+		break;
+	case PM660_SUBTYPE:
+		indio_dev->name = "pm660-rradc";
+		break;
+	default:
+		indio_dev->name = DRIVER_NAME;
+		break;
+	}
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &rradc_info;
+	indio_dev->channels = rradc_iio_chans;
+	indio_dev->num_channels = ARRAY_SIZE(rradc_iio_chans);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id rradc_match_table[] = {
+	{ .compatible = "qcom,pm660-rradc" },
+	{ .compatible = "qcom,pmi8998-rradc" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rradc_match_table);
+
+static struct platform_driver rradc_driver = {
+	.driver		= {
+		.name		= DRIVER_NAME,
+		.of_match_table	= rradc_match_table,
+	},
+	.probe = rradc_probe,
+};
+module_platform_driver(rradc_driver);
+
+MODULE_DESCRIPTION("QCOM SPMI PMIC RR ADC driver");
+MODULE_AUTHOR("Caleb Connolly <caleb.connolly@linaro.org>");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/qcom-spmi-vadc.c b/drivers/iio/adc/qcom-spmi-vadc.c
index 203ad59da336..bcff0f62b70e 100644
--- a/drivers/iio/adc/qcom-spmi-vadc.c
+++ b/drivers/iio/adc/qcom-spmi-vadc.c
@@ -7,21 +7,21 @@
 #include <linux/completion.h>
 #include <linux/delay.h>
 #include <linux/err.h>
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/kernel.h>
 #include <linux/math64.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/slab.h>
 #include <linux/log2.h>
 
 #include <dt-bindings/iio/qcom,spmi-vadc.h>
 
-#include "qcom-vadc-common.h"
-
 /* VADC register and bit definitions */
 #define VADC_REVISION2				0x1
 #define VADC_REVISION2_SUPPORTED_VADC		1
@@ -123,15 +123,15 @@ struct vadc_priv {
 	struct mutex		 lock;
 };
 
-static const struct vadc_prescale_ratio vadc_prescale_ratios[] = {
-	{.num =  1, .den =  1},
-	{.num =  1, .den =  3},
-	{.num =  1, .den =  4},
-	{.num =  1, .den =  6},
-	{.num =  1, .den = 20},
-	{.num =  1, .den =  8},
-	{.num = 10, .den = 81},
-	{.num =  1, .den = 10}
+static const struct u32_fract vadc_prescale_ratios[] = {
+	{ .numerator =  1, .denominator =  1 },
+	{ .numerator =  1, .denominator =  3 },
+	{ .numerator =  1, .denominator =  4 },
+	{ .numerator =  1, .denominator =  6 },
+	{ .numerator =  1, .denominator = 20 },
+	{ .numerator =  1, .denominator =  8 },
+	{ .numerator = 10, .denominator = 81 },
+	{ .numerator =  1, .denominator = 10 },
 };
 
 static int vadc_read(struct vadc_priv *vadc, u16 offset, u8 *data)
@@ -405,13 +405,13 @@ err:
 	return ret;
 }
 
-static int vadc_prescaling_from_dt(u32 num, u32 den)
+static int vadc_prescaling_from_dt(u32 numerator, u32 denominator)
 {
 	unsigned int pre;
 
 	for (pre = 0; pre < ARRAY_SIZE(vadc_prescale_ratios); pre++)
-		if (vadc_prescale_ratios[pre].num == num &&
-		    vadc_prescale_ratios[pre].den == den)
+		if (vadc_prescale_ratios[pre].numerator == numerator &&
+		    vadc_prescale_ratios[pre].denominator == denominator)
 			break;
 
 	if (pre == ARRAY_SIZE(vadc_prescale_ratios))
@@ -482,8 +482,8 @@ static int vadc_read_raw(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static int vadc_of_xlate(struct iio_dev *indio_dev,
-			 const struct of_phandle_args *iiospec)
+static int vadc_fwnode_xlate(struct iio_dev *indio_dev,
+			     const struct fwnode_reference_args *iiospec)
 {
 	struct vadc_priv *vadc = iio_priv(indio_dev);
 	unsigned int i;
@@ -497,7 +497,7 @@ static int vadc_of_xlate(struct iio_dev *indio_dev,
 
 static const struct iio_info vadc_info = {
 	.read_raw = vadc_read_raw,
-	.of_xlate = vadc_of_xlate,
+	.fwnode_xlate = vadc_fwnode_xlate,
 };
 
 struct vadc_channels {
@@ -598,7 +598,7 @@ static const struct vadc_channels vadc_chans[] = {
 	VADC_CHAN_NO_SCALE(P_MUX16_1_3, 1)
 
 	VADC_CHAN_NO_SCALE(LR_MUX1_BAT_THERM, 0)
-	VADC_CHAN_NO_SCALE(LR_MUX2_BAT_ID, 0)
+	VADC_CHAN_VOLT(LR_MUX2_BAT_ID, 0, SCALE_DEFAULT)
 	VADC_CHAN_NO_SCALE(LR_MUX3_XO_THERM, 0)
 	VADC_CHAN_NO_SCALE(LR_MUX4_AMUX_THM1, 0)
 	VADC_CHAN_NO_SCALE(LR_MUX5_AMUX_THM2, 0)
@@ -648,15 +648,15 @@ static const struct vadc_channels vadc_chans[] = {
 	VADC_CHAN_NO_SCALE(LR_MUX3_BUF_PU1_PU2_XO_THERM, 0)
 };
 
-static int vadc_get_dt_channel_data(struct device *dev,
+static int vadc_get_fw_channel_data(struct device *dev,
 				    struct vadc_channel_prop *prop,
-				    struct device_node *node)
+				    struct fwnode_handle *fwnode)
 {
-	const char *name = node->name;
+	const char *name = fwnode_get_name(fwnode);
 	u32 chan, value, varr[2];
 	int ret;
 
-	ret = of_property_read_u32(node, "reg", &chan);
+	ret = fwnode_property_read_u32(fwnode, "reg", &chan);
 	if (ret) {
 		dev_err(dev, "invalid channel number %s\n", name);
 		return ret;
@@ -670,7 +670,7 @@ static int vadc_get_dt_channel_data(struct device *dev,
 	/* the channel has DT description */
 	prop->channel = chan;
 
-	ret = of_property_read_u32(node, "qcom,decimation", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,decimation", &value);
 	if (!ret) {
 		ret = qcom_vadc_decimation_from_dt(value);
 		if (ret < 0) {
@@ -683,7 +683,7 @@ static int vadc_get_dt_channel_data(struct device *dev,
 		prop->decimation = VADC_DEF_DECIMATION;
 	}
 
-	ret = of_property_read_u32_array(node, "qcom,pre-scaling", varr, 2);
+	ret = fwnode_property_read_u32_array(fwnode, "qcom,pre-scaling", varr, 2);
 	if (!ret) {
 		ret = vadc_prescaling_from_dt(varr[0], varr[1]);
 		if (ret < 0) {
@@ -696,7 +696,7 @@ static int vadc_get_dt_channel_data(struct device *dev,
 		prop->prescale = vadc_chans[prop->channel].prescale_index;
 	}
 
-	ret = of_property_read_u32(node, "qcom,hw-settle-time", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,hw-settle-time", &value);
 	if (!ret) {
 		ret = vadc_hw_settle_time_from_dt(value);
 		if (ret < 0) {
@@ -709,7 +709,7 @@ static int vadc_get_dt_channel_data(struct device *dev,
 		prop->hw_settle_time = VADC_DEF_HW_SETTLE_TIME;
 	}
 
-	ret = of_property_read_u32(node, "qcom,avg-samples", &value);
+	ret = fwnode_property_read_u32(fwnode, "qcom,avg-samples", &value);
 	if (!ret) {
 		ret = vadc_avg_samples_from_dt(value);
 		if (ret < 0) {
@@ -722,7 +722,7 @@ static int vadc_get_dt_channel_data(struct device *dev,
 		prop->avg_samples = VADC_DEF_AVG_SAMPLES;
 	}
 
-	if (of_property_read_bool(node, "qcom,ratiometric"))
+	if (fwnode_property_read_bool(fwnode, "qcom,ratiometric"))
 		prop->calibration = VADC_CALIB_RATIOMETRIC;
 	else
 		prop->calibration = VADC_CALIB_ABSOLUTE;
@@ -732,16 +732,16 @@ static int vadc_get_dt_channel_data(struct device *dev,
 	return 0;
 }
 
-static int vadc_get_dt_data(struct vadc_priv *vadc, struct device_node *node)
+static int vadc_get_fw_data(struct vadc_priv *vadc)
 {
 	const struct vadc_channels *vadc_chan;
 	struct iio_chan_spec *iio_chan;
 	struct vadc_channel_prop prop;
-	struct device_node *child;
+	struct fwnode_handle *child;
 	unsigned int index = 0;
 	int ret;
 
-	vadc->nchannels = of_get_available_child_count(node);
+	vadc->nchannels = device_get_child_node_count(vadc->dev);
 	if (!vadc->nchannels)
 		return -EINVAL;
 
@@ -757,10 +757,10 @@ static int vadc_get_dt_data(struct vadc_priv *vadc, struct device_node *node)
 
 	iio_chan = vadc->iio_chans;
 
-	for_each_available_child_of_node(node, child) {
-		ret = vadc_get_dt_channel_data(vadc->dev, &prop, child);
+	device_for_each_child_node(vadc->dev, child) {
+		ret = vadc_get_fw_channel_data(vadc->dev, &prop, child);
 		if (ret) {
-			of_node_put(child);
+			fwnode_handle_put(child);
 			return ret;
 		}
 
@@ -849,7 +849,6 @@ static int vadc_check_revision(struct vadc_priv *vadc)
 
 static int vadc_probe(struct platform_device *pdev)
 {
-	struct device_node *node = pdev->dev.of_node;
 	struct device *dev = &pdev->dev;
 	struct iio_dev *indio_dev;
 	struct vadc_priv *vadc;
@@ -861,7 +860,7 @@ static int vadc_probe(struct platform_device *pdev)
 	if (!regmap)
 		return -ENODEV;
 
-	ret = of_property_read_u32(node, "reg", &reg);
+	ret = device_property_read_u32(dev, "reg", &reg);
 	if (ret < 0)
 		return ret;
 
@@ -881,7 +880,7 @@ static int vadc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	ret = vadc_get_dt_data(vadc, node);
+	ret = vadc_get_fw_data(vadc);
 	if (ret)
 		return ret;
 
@@ -907,8 +906,6 @@ static int vadc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = node;
 	indio_dev->name = pdev->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &vadc_info;
diff --git a/drivers/iio/adc/qcom-vadc-common.c b/drivers/iio/adc/qcom-vadc-common.c
index 2bb78d1c4daa..d5209f32adb3 100644
--- a/drivers/iio/adc/qcom-vadc-common.c
+++ b/drivers/iio/adc/qcom-vadc-common.c
@@ -2,50 +2,61 @@
 #include <linux/bug.h>
 #include <linux/kernel.h>
 #include <linux/bitops.h>
+#include <linux/fixp-arith.h>
+#include <linux/iio/adc/qcom-vadc-common.h>
 #include <linux/math64.h>
 #include <linux/log2.h>
 #include <linux/err.h>
 #include <linux/module.h>
 #include <linux/units.h>
 
-#include "qcom-vadc-common.h"
+/**
+ * struct vadc_map_pt - Map the graph representation for ADC channel
+ * @x: Represent the ADC digitized code.
+ * @y: Represent the physical data which can be temperature, voltage,
+ *     resistance.
+ */
+struct vadc_map_pt {
+	s32 x;
+	s32 y;
+};
 
 /* Voltage to temperature */
 static const struct vadc_map_pt adcmap_100k_104ef_104fb[] = {
-	{1758,	-40},
-	{1742,	-35},
-	{1719,	-30},
-	{1691,	-25},
-	{1654,	-20},
-	{1608,	-15},
-	{1551,	-10},
-	{1483,	-5},
-	{1404,	0},
-	{1315,	5},
-	{1218,	10},
-	{1114,	15},
-	{1007,	20},
-	{900,	25},
-	{795,	30},
-	{696,	35},
-	{605,	40},
-	{522,	45},
-	{448,	50},
-	{383,	55},
-	{327,	60},
-	{278,	65},
-	{237,	70},
-	{202,	75},
-	{172,	80},
-	{146,	85},
-	{125,	90},
-	{107,	95},
-	{92,	100},
-	{79,	105},
-	{68,	110},
-	{59,	115},
-	{51,	120},
-	{44,	125}
+	{1758,	-40000 },
+	{1742,	-35000 },
+	{1719,	-30000 },
+	{1691,	-25000 },
+	{1654,	-20000 },
+	{1608,	-15000 },
+	{1551,	-10000 },
+	{1483,	-5000 },
+	{1404,	0 },
+	{1315,	5000 },
+	{1218,	10000 },
+	{1114,	15000 },
+	{1007,	20000 },
+	{900,	25000 },
+	{795,	30000 },
+	{696,	35000 },
+	{605,	40000 },
+	{522,	45000 },
+	{448,	50000 },
+	{383,	55000 },
+	{327,	60000 },
+	{278,	65000 },
+	{237,	70000 },
+	{202,	75000 },
+	{172,	80000 },
+	{146,	85000 },
+	{125,	90000 },
+	{107,	95000 },
+	{92,	100000 },
+	{79,	105000 },
+	{68,	110000 },
+	{59,	115000 },
+	{51,	120000 },
+	{44,	125000 }
 };
 
 /*
@@ -89,24 +100,233 @@ static const struct vadc_map_pt adcmap_100k_104ef_104fb_1875_vref[] = {
 	{ 46,	125000 },
 };
 
+static const struct vadc_map_pt adcmap7_die_temp[] = {
+	{ 857300, 160000 },
+	{ 820100, 140000 },
+	{ 782500, 120000 },
+	{ 744600, 100000 },
+	{ 706400, 80000 },
+	{ 667900, 60000 },
+	{ 629300, 40000 },
+	{ 590500, 20000 },
+	{ 551500, 0 },
+	{ 512400, -20000 },
+	{ 473100, -40000 },
+	{ 433700, -60000 },
+};
+
+/*
+ * Resistance to temperature table for 100k pull up for NTCG104EF104.
+ */
+static const struct vadc_map_pt adcmap7_100k[] = {
+	{ 4250657, -40960 },
+	{ 3962085, -39936 },
+	{ 3694875, -38912 },
+	{ 3447322, -37888 },
+	{ 3217867, -36864 },
+	{ 3005082, -35840 },
+	{ 2807660, -34816 },
+	{ 2624405, -33792 },
+	{ 2454218, -32768 },
+	{ 2296094, -31744 },
+	{ 2149108, -30720 },
+	{ 2012414, -29696 },
+	{ 1885232, -28672 },
+	{ 1766846, -27648 },
+	{ 1656598, -26624 },
+	{ 1553884, -25600 },
+	{ 1458147, -24576 },
+	{ 1368873, -23552 },
+	{ 1285590, -22528 },
+	{ 1207863, -21504 },
+	{ 1135290, -20480 },
+	{ 1067501, -19456 },
+	{ 1004155, -18432 },
+	{ 944935, -17408 },
+	{ 889550, -16384 },
+	{ 837731, -15360 },
+	{ 789229, -14336 },
+	{ 743813, -13312 },
+	{ 701271, -12288 },
+	{ 661405, -11264 },
+	{ 624032, -10240 },
+	{ 588982, -9216 },
+	{ 556100, -8192 },
+	{ 525239, -7168 },
+	{ 496264, -6144 },
+	{ 469050, -5120 },
+	{ 443480, -4096 },
+	{ 419448, -3072 },
+	{ 396851, -2048 },
+	{ 375597, -1024 },
+	{ 355598, 0 },
+	{ 336775, 1024 },
+	{ 319052, 2048 },
+	{ 302359, 3072 },
+	{ 286630, 4096 },
+	{ 271806, 5120 },
+	{ 257829, 6144 },
+	{ 244646, 7168 },
+	{ 232209, 8192 },
+	{ 220471, 9216 },
+	{ 209390, 10240 },
+	{ 198926, 11264 },
+	{ 189040, 12288 },
+	{ 179698, 13312 },
+	{ 170868, 14336 },
+	{ 162519, 15360 },
+	{ 154622, 16384 },
+	{ 147150, 17408 },
+	{ 140079, 18432 },
+	{ 133385, 19456 },
+	{ 127046, 20480 },
+	{ 121042, 21504 },
+	{ 115352, 22528 },
+	{ 109960, 23552 },
+	{ 104848, 24576 },
+	{ 100000, 25600 },
+	{ 95402, 26624 },
+	{ 91038, 27648 },
+	{ 86897, 28672 },
+	{ 82965, 29696 },
+	{ 79232, 30720 },
+	{ 75686, 31744 },
+	{ 72316, 32768 },
+	{ 69114, 33792 },
+	{ 66070, 34816 },
+	{ 63176, 35840 },
+	{ 60423, 36864 },
+	{ 57804, 37888 },
+	{ 55312, 38912 },
+	{ 52940, 39936 },
+	{ 50681, 40960 },
+	{ 48531, 41984 },
+	{ 46482, 43008 },
+	{ 44530, 44032 },
+	{ 42670, 45056 },
+	{ 40897, 46080 },
+	{ 39207, 47104 },
+	{ 37595, 48128 },
+	{ 36057, 49152 },
+	{ 34590, 50176 },
+	{ 33190, 51200 },
+	{ 31853, 52224 },
+	{ 30577, 53248 },
+	{ 29358, 54272 },
+	{ 28194, 55296 },
+	{ 27082, 56320 },
+	{ 26020, 57344 },
+	{ 25004, 58368 },
+	{ 24033, 59392 },
+	{ 23104, 60416 },
+	{ 22216, 61440 },
+	{ 21367, 62464 },
+	{ 20554, 63488 },
+	{ 19776, 64512 },
+	{ 19031, 65536 },
+	{ 18318, 66560 },
+	{ 17636, 67584 },
+	{ 16982, 68608 },
+	{ 16355, 69632 },
+	{ 15755, 70656 },
+	{ 15180, 71680 },
+	{ 14628, 72704 },
+	{ 14099, 73728 },
+	{ 13592, 74752 },
+	{ 13106, 75776 },
+	{ 12640, 76800 },
+	{ 12192, 77824 },
+	{ 11762, 78848 },
+	{ 11350, 79872 },
+	{ 10954, 80896 },
+	{ 10574, 81920 },
+	{ 10209, 82944 },
+	{ 9858, 83968 },
+	{ 9521, 84992 },
+	{ 9197, 86016 },
+	{ 8886, 87040 },
+	{ 8587, 88064 },
+	{ 8299, 89088 },
+	{ 8023, 90112 },
+	{ 7757, 91136 },
+	{ 7501, 92160 },
+	{ 7254, 93184 },
+	{ 7017, 94208 },
+	{ 6789, 95232 },
+	{ 6570, 96256 },
+	{ 6358, 97280 },
+	{ 6155, 98304 },
+	{ 5959, 99328 },
+	{ 5770, 100352 },
+	{ 5588, 101376 },
+	{ 5412, 102400 },
+	{ 5243, 103424 },
+	{ 5080, 104448 },
+	{ 4923, 105472 },
+	{ 4771, 106496 },
+	{ 4625, 107520 },
+	{ 4484, 108544 },
+	{ 4348, 109568 },
+	{ 4217, 110592 },
+	{ 4090, 111616 },
+	{ 3968, 112640 },
+	{ 3850, 113664 },
+	{ 3736, 114688 },
+	{ 3626, 115712 },
+	{ 3519, 116736 },
+	{ 3417, 117760 },
+	{ 3317, 118784 },
+	{ 3221, 119808 },
+	{ 3129, 120832 },
+	{ 3039, 121856 },
+	{ 2952, 122880 },
+	{ 2868, 123904 },
+	{ 2787, 124928 },
+	{ 2709, 125952 },
+	{ 2633, 126976 },
+	{ 2560, 128000 },
+	{ 2489, 129024 },
+	{ 2420, 130048 }
+};
+
+static const struct u32_fract adc5_prescale_ratios[] = {
+	{ .numerator =  1, .denominator =  1 },
+	{ .numerator =  1, .denominator =  3 },
+	{ .numerator =  1, .denominator =  4 },
+	{ .numerator =  1, .denominator =  6 },
+	{ .numerator =  1, .denominator = 20 },
+	{ .numerator =  1, .denominator =  8 },
+	{ .numerator = 10, .denominator = 81 },
+	{ .numerator =  1, .denominator = 10 },
+	{ .numerator =  1, .denominator = 16 },
+};
+
 static int qcom_vadc_scale_hw_calib_volt(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_uv);
 static int qcom_vadc_scale_hw_calib_therm(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
+				const struct adc5_data *data,
+				u16 adc_code, int *result_mdec);
+static int qcom_vadc7_scale_hw_calib_therm(
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec);
 static int qcom_vadc_scale_hw_smb_temp(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec);
 static int qcom_vadc_scale_hw_chg5_temp(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec);
 static int qcom_vadc_scale_hw_calib_die_temp(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
+				const struct adc5_data *data,
+				u16 adc_code, int *result_mdec);
+static int qcom_vadc7_scale_hw_calib_die_temp(
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec);
 
@@ -114,7 +334,11 @@ static struct qcom_adc5_scale_type scale_adc5_fn[] = {
 	[SCALE_HW_CALIB_DEFAULT] = {qcom_vadc_scale_hw_calib_volt},
 	[SCALE_HW_CALIB_THERM_100K_PULLUP] = {qcom_vadc_scale_hw_calib_therm},
 	[SCALE_HW_CALIB_XOTHERM] = {qcom_vadc_scale_hw_calib_therm},
+	[SCALE_HW_CALIB_THERM_100K_PU_PM7] = {
+					qcom_vadc7_scale_hw_calib_therm},
 	[SCALE_HW_CALIB_PMIC_THERM] = {qcom_vadc_scale_hw_calib_die_temp},
+	[SCALE_HW_CALIB_PMIC_THERM_PM7] = {
+					qcom_vadc7_scale_hw_calib_die_temp},
 	[SCALE_HW_CALIB_PM5_CHG_TEMP] = {qcom_vadc_scale_hw_chg5_temp},
 	[SCALE_HW_CALIB_PM5_SMB_TEMP] = {qcom_vadc_scale_hw_smb_temp},
 };
@@ -122,48 +346,50 @@ static struct qcom_adc5_scale_type scale_adc5_fn[] = {
 static int qcom_vadc_map_voltage_temp(const struct vadc_map_pt *pts,
 				      u32 tablesize, s32 input, int *output)
 {
-	bool descending = 1;
 	u32 i = 0;
 
 	if (!pts)
 		return -EINVAL;
 
-	/* Check if table is descending or ascending */
-	if (tablesize > 1) {
-		if (pts[0].x < pts[1].x)
-			descending = 0;
-	}
-
-	while (i < tablesize) {
-		if ((descending) && (pts[i].x < input)) {
-			/* table entry is less than measured*/
-			 /* value and table is descending, stop */
-			break;
-		} else if ((!descending) &&
-				(pts[i].x > input)) {
-			/* table entry is greater than measured*/
-			/*value and table is ascending, stop */
-			break;
-		}
+	while (i < tablesize && pts[i].x > input)
 		i++;
-	}
 
 	if (i == 0) {
 		*output = pts[0].y;
 	} else if (i == tablesize) {
 		*output = pts[tablesize - 1].y;
 	} else {
-		/* result is between search_index and search_index-1 */
 		/* interpolate linearly */
-		*output = (((s32)((pts[i].y - pts[i - 1].y) *
-			(input - pts[i - 1].x)) /
-			(pts[i].x - pts[i - 1].x)) +
-			pts[i - 1].y);
+		*output = fixp_linear_interpolate(pts[i - 1].x, pts[i - 1].y,
+						  pts[i].x, pts[i].y,
+						  input);
 	}
 
 	return 0;
 }
 
+static s32 qcom_vadc_map_temp_voltage(const struct vadc_map_pt *pts,
+				      u32 tablesize, int input)
+{
+	u32 i = 0;
+
+	/*
+	 * Table must be sorted, find the interval of 'y' which contains value
+	 * 'input' and map it to proper 'x' value
+	 */
+	while (i < tablesize && pts[i].y < input)
+		i++;
+
+	if (i == 0)
+		return pts[0].x;
+	if (i == tablesize)
+		return pts[tablesize - 1].x;
+
+	/* interpolate linearly */
+	return fixp_linear_interpolate(pts[i - 1].y, pts[i - 1].x,
+			pts[i].y, pts[i].x, input);
+}
+
 static void qcom_vadc_scale_calib(const struct vadc_linear_graph *calib_graph,
 				  u16 adc_code,
 				  bool absolute,
@@ -180,7 +406,7 @@ static void qcom_vadc_scale_calib(const struct vadc_linear_graph *calib_graph,
 }
 
 static int qcom_vadc_scale_volt(const struct vadc_linear_graph *calib_graph,
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				bool absolute, u16 adc_code,
 				int *result_uv)
 {
@@ -188,15 +414,15 @@ static int qcom_vadc_scale_volt(const struct vadc_linear_graph *calib_graph,
 
 	qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);
 
-	voltage = voltage * prescale->den;
-	result = div64_s64(voltage, prescale->num);
+	voltage *= prescale->denominator;
+	result = div64_s64(voltage, prescale->numerator);
 	*result_uv = result;
 
 	return 0;
 }
 
 static int qcom_vadc_scale_therm(const struct vadc_linear_graph *calib_graph,
-				 const struct vadc_prescale_ratio *prescale,
+				 const struct u32_fract *prescale,
 				 bool absolute, u16 adc_code,
 				 int *result_mdec)
 {
@@ -214,13 +440,11 @@ static int qcom_vadc_scale_therm(const struct vadc_linear_graph *calib_graph,
 	if (ret)
 		return ret;
 
-	*result_mdec *= 1000;
-
 	return 0;
 }
 
 static int qcom_vadc_scale_die_temp(const struct vadc_linear_graph *calib_graph,
-				    const struct vadc_prescale_ratio *prescale,
+				    const struct u32_fract *prescale,
 				    bool absolute,
 				    u16 adc_code, int *result_mdec)
 {
@@ -230,8 +454,8 @@ static int qcom_vadc_scale_die_temp(const struct vadc_linear_graph *calib_graph,
 	qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);
 
 	if (voltage > 0) {
-		temp = voltage * prescale->den;
-		do_div(temp, prescale->num * 2);
+		temp = voltage * prescale->denominator;
+		do_div(temp, prescale->numerator * 2);
 		voltage = temp;
 	} else {
 		voltage = 0;
@@ -243,7 +467,7 @@ static int qcom_vadc_scale_die_temp(const struct vadc_linear_graph *calib_graph,
 }
 
 static int qcom_vadc_scale_chg_temp(const struct vadc_linear_graph *calib_graph,
-				    const struct vadc_prescale_ratio *prescale,
+				    const struct u32_fract *prescale,
 				    bool absolute,
 				    u16 adc_code, int *result_mdec)
 {
@@ -251,8 +475,8 @@ static int qcom_vadc_scale_chg_temp(const struct vadc_linear_graph *calib_graph,
 
 	qcom_vadc_scale_calib(calib_graph, adc_code, absolute, &voltage);
 
-	voltage = voltage * prescale->den;
-	voltage = div64_s64(voltage, prescale->num);
+	voltage *= prescale->denominator;
+	voltage = div64_s64(voltage, prescale->numerator);
 	voltage = ((PMI_CHG_SCALE_1) * (voltage * 2));
 	voltage = (voltage + PMI_CHG_SCALE_2);
 	result =  div64_s64(voltage, 1000000);
@@ -261,8 +485,23 @@ static int qcom_vadc_scale_chg_temp(const struct vadc_linear_graph *calib_graph,
 	return 0;
 }
 
+/* convert voltage to ADC code, using 1.875V reference */
+static u16 qcom_vadc_scale_voltage_code(s32 voltage,
+					const struct u32_fract *prescale,
+					const u32 full_scale_code_volt,
+					unsigned int factor)
+{
+	s64 volt = voltage;
+	s64 adc_vdd_ref_mv = 1875; /* reference voltage */
+
+	volt *= prescale->numerator * factor * full_scale_code_volt;
+	volt = div64_s64(volt, (s64)prescale->denominator * adc_vdd_ref_mv * 1000);
+
+	return volt;
+}
+
 static int qcom_vadc_scale_code_voltage_factor(u16 adc_code,
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				unsigned int factor)
 {
@@ -281,8 +520,8 @@ static int qcom_vadc_scale_code_voltage_factor(u16 adc_code,
 	voltage = (s64) adc_code * adc_vdd_ref_mv * 1000;
 	voltage = div64_s64(voltage, data->full_scale_code_volt);
 	if (voltage > 0) {
-		voltage *= prescale->den;
-		temp = prescale->num * factor;
+		voltage *= prescale->denominator;
+		temp = prescale->numerator * factor;
 		voltage = div64_s64(voltage, temp);
 	} else {
 		voltage = 0;
@@ -291,8 +530,34 @@ static int qcom_vadc_scale_code_voltage_factor(u16 adc_code,
 	return (int) voltage;
 }
 
+static int qcom_vadc7_scale_hw_calib_therm(
+				const struct u32_fract *prescale,
+				const struct adc5_data *data,
+				u16 adc_code, int *result_mdec)
+{
+	s64 resistance = adc_code;
+	int ret, result;
+
+	if (adc_code >= RATIO_MAX_ADC7)
+		return -EINVAL;
+
+	/* (ADC code * R_PULLUP (100Kohm)) / (full_scale_code - ADC code)*/
+	resistance *= R_PU_100K;
+	resistance = div64_s64(resistance, RATIO_MAX_ADC7 - adc_code);
+
+	ret = qcom_vadc_map_voltage_temp(adcmap7_100k,
+				 ARRAY_SIZE(adcmap7_100k),
+				 resistance, &result);
+	if (ret)
+		return ret;
+
+	*result_mdec = result;
+
+	return 0;
+}
+
 static int qcom_vadc_scale_hw_calib_volt(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_uv)
 {
@@ -303,7 +568,7 @@ static int qcom_vadc_scale_hw_calib_volt(
 }
 
 static int qcom_vadc_scale_hw_calib_therm(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec)
 {
@@ -319,7 +584,7 @@ static int qcom_vadc_scale_hw_calib_therm(
 }
 
 static int qcom_vadc_scale_hw_calib_die_temp(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec)
 {
@@ -330,8 +595,23 @@ static int qcom_vadc_scale_hw_calib_die_temp(
 	return 0;
 }
 
+static int qcom_vadc7_scale_hw_calib_die_temp(
+				const struct u32_fract *prescale,
+				const struct adc5_data *data,
+				u16 adc_code, int *result_mdec)
+{
+
+	int voltage;
+
+	voltage = qcom_vadc_scale_code_voltage_factor(adc_code,
+				prescale, data, 1);
+
+	return qcom_vadc_map_voltage_temp(adcmap7_die_temp, ARRAY_SIZE(adcmap7_die_temp),
+			voltage, result_mdec);
+}
+
 static int qcom_vadc_scale_hw_smb_temp(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec)
 {
@@ -343,7 +623,7 @@ static int qcom_vadc_scale_hw_smb_temp(
 }
 
 static int qcom_vadc_scale_hw_chg5_temp(
-				const struct vadc_prescale_ratio *prescale,
+				const struct u32_fract *prescale,
 				const struct adc5_data *data,
 				u16 adc_code, int *result_mdec)
 {
@@ -356,7 +636,7 @@ static int qcom_vadc_scale_hw_chg5_temp(
 
 int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
 		    const struct vadc_linear_graph *calib_graph,
-		    const struct vadc_prescale_ratio *prescale,
+		    const struct u32_fract *prescale,
 		    bool absolute,
 		    u16 adc_code, int *result)
 {
@@ -384,11 +664,37 @@ int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
 }
 EXPORT_SYMBOL(qcom_vadc_scale);
 
+u16 qcom_adc_tm5_temp_volt_scale(unsigned int prescale_ratio,
+				 u32 full_scale_code_volt, int temp)
+{
+	const struct u32_fract *prescale = &adc5_prescale_ratios[prescale_ratio];
+	s32 voltage;
+
+	voltage = qcom_vadc_map_temp_voltage(adcmap_100k_104ef_104fb_1875_vref,
+					     ARRAY_SIZE(adcmap_100k_104ef_104fb_1875_vref),
+					     temp);
+	return qcom_vadc_scale_voltage_code(voltage, prescale, full_scale_code_volt, 1000);
+}
+EXPORT_SYMBOL(qcom_adc_tm5_temp_volt_scale);
+
+u16 qcom_adc_tm5_gen2_temp_res_scale(int temp)
+{
+	int64_t resistance;
+
+	resistance = qcom_vadc_map_temp_voltage(adcmap7_100k,
+		ARRAY_SIZE(adcmap7_100k), temp);
+
+	return div64_s64(resistance * RATIO_MAX_ADC7, resistance + R_PU_100K);
+}
+EXPORT_SYMBOL(qcom_adc_tm5_gen2_temp_res_scale);
+
 int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
-		    const struct vadc_prescale_ratio *prescale,
+		    unsigned int prescale_ratio,
 		    const struct adc5_data *data,
 		    u16 adc_code, int *result)
 {
+	const struct u32_fract *prescale = &adc5_prescale_ratios[prescale_ratio];
+
 	if (!(scaletype >= SCALE_HW_CALIB_DEFAULT &&
 		scaletype < SCALE_HW_CALIB_INVALID)) {
 		pr_err("Invalid scale type %d\n", scaletype);
@@ -400,6 +706,58 @@ int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
 }
 EXPORT_SYMBOL(qcom_adc5_hw_scale);
 
+int qcom_adc5_prescaling_from_dt(u32 numerator, u32 denominator)
+{
+	unsigned int pre;
+
+	for (pre = 0; pre < ARRAY_SIZE(adc5_prescale_ratios); pre++)
+		if (adc5_prescale_ratios[pre].numerator == numerator &&
+		    adc5_prescale_ratios[pre].denominator == denominator)
+			break;
+
+	if (pre == ARRAY_SIZE(adc5_prescale_ratios))
+		return -EINVAL;
+
+	return pre;
+}
+EXPORT_SYMBOL(qcom_adc5_prescaling_from_dt);
+
+int qcom_adc5_hw_settle_time_from_dt(u32 value,
+				     const unsigned int *hw_settle)
+{
+	unsigned int i;
+
+	for (i = 0; i < VADC_HW_SETTLE_SAMPLES_MAX; i++) {
+		if (value == hw_settle[i])
+			return i;
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(qcom_adc5_hw_settle_time_from_dt);
+
+int qcom_adc5_avg_samples_from_dt(u32 value)
+{
+	if (!is_power_of_2(value) || value > ADC5_AVG_SAMPLES_MAX)
+		return -EINVAL;
+
+	return __ffs(value);
+}
+EXPORT_SYMBOL(qcom_adc5_avg_samples_from_dt);
+
+int qcom_adc5_decimation_from_dt(u32 value, const unsigned int *decimation)
+{
+	unsigned int i;
+
+	for (i = 0; i < ADC5_DECIMATION_SAMPLES_MAX; i++) {
+		if (value == decimation[i])
+			return i;
+	}
+
+	return -EINVAL;
+}
+EXPORT_SYMBOL(qcom_adc5_decimation_from_dt);
+
 int qcom_vadc_decimation_from_dt(u32 value)
 {
 	if (!is_power_of_2(value) || value < VADC_DECIMATION_MIN ||
diff --git a/drivers/iio/adc/qcom-vadc-common.h b/drivers/iio/adc/qcom-vadc-common.h
deleted file mode 100644
index e074902a24cc..000000000000
--- a/drivers/iio/adc/qcom-vadc-common.h
+++ /dev/null
@@ -1,162 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- * Code shared between the different Qualcomm PMIC voltage ADCs
- */
-
-#ifndef QCOM_VADC_COMMON_H
-#define QCOM_VADC_COMMON_H
-
-#define VADC_CONV_TIME_MIN_US			2000
-#define VADC_CONV_TIME_MAX_US			2100
-
-/* Min ADC code represents 0V */
-#define VADC_MIN_ADC_CODE			0x6000
-/* Max ADC code represents full-scale range of 1.8V */
-#define VADC_MAX_ADC_CODE			0xa800
-
-#define VADC_ABSOLUTE_RANGE_UV			625000
-#define VADC_RATIOMETRIC_RANGE			1800
-
-#define VADC_DEF_PRESCALING			0 /* 1:1 */
-#define VADC_DEF_DECIMATION			0 /* 512 */
-#define VADC_DEF_HW_SETTLE_TIME			0 /* 0 us */
-#define VADC_DEF_AVG_SAMPLES			0 /* 1 sample */
-#define VADC_DEF_CALIB_TYPE			VADC_CALIB_ABSOLUTE
-
-#define VADC_DECIMATION_MIN			512
-#define VADC_DECIMATION_MAX			4096
-#define ADC5_DEF_VBAT_PRESCALING		1 /* 1:3 */
-#define ADC5_DECIMATION_SHORT			250
-#define ADC5_DECIMATION_MEDIUM			420
-#define ADC5_DECIMATION_LONG			840
-/* Default decimation - 1024 for rev2, 840 for pmic5 */
-#define ADC5_DECIMATION_DEFAULT			2
-#define ADC5_DECIMATION_SAMPLES_MAX		3
-
-#define VADC_HW_SETTLE_DELAY_MAX		10000
-#define VADC_HW_SETTLE_SAMPLES_MAX		16
-#define VADC_AVG_SAMPLES_MAX			512
-#define ADC5_AVG_SAMPLES_MAX			16
-
-#define PMIC5_CHG_TEMP_SCALE_FACTOR		377500
-#define PMIC5_SMB_TEMP_CONSTANT			419400
-#define PMIC5_SMB_TEMP_SCALE_FACTOR		356
-
-#define PMI_CHG_SCALE_1				-138890
-#define PMI_CHG_SCALE_2				391750000000LL
-
-#define VADC5_MAX_CODE				0x7fff
-#define ADC5_FULL_SCALE_CODE			0x70e4
-#define ADC5_USR_DATA_CHECK			0x8000
-
-/**
- * struct vadc_map_pt - Map the graph representation for ADC channel
- * @x: Represent the ADC digitized code.
- * @y: Represent the physical data which can be temperature, voltage,
- *     resistance.
- */
-struct vadc_map_pt {
-	s32 x;
-	s32 y;
-};
-
-/*
- * VADC_CALIB_ABSOLUTE: uses the 625mV and 1.25V as reference channels.
- * VADC_CALIB_RATIOMETRIC: uses the reference voltage (1.8V) and GND for
- * calibration.
- */
-enum vadc_calibration {
-	VADC_CALIB_ABSOLUTE = 0,
-	VADC_CALIB_RATIOMETRIC
-};
-
-/**
- * struct vadc_linear_graph - Represent ADC characteristics.
- * @dy: numerator slope to calculate the gain.
- * @dx: denominator slope to calculate the gain.
- * @gnd: A/D word of the ground reference used for the channel.
- *
- * Each ADC device has different offset and gain parameters which are
- * computed to calibrate the device.
- */
-struct vadc_linear_graph {
-	s32 dy;
-	s32 dx;
-	s32 gnd;
-};
-
-/**
- * struct vadc_prescale_ratio - Represent scaling ratio for ADC input.
- * @num: the inverse numerator of the gain applied to the input channel.
- * @den: the inverse denominator of the gain applied to the input channel.
- */
-struct vadc_prescale_ratio {
-	u32 num;
-	u32 den;
-};
-
-/**
- * enum vadc_scale_fn_type - Scaling function to convert ADC code to
- *				physical scaled units for the channel.
- * SCALE_DEFAULT: Default scaling to convert raw adc code to voltage (uV).
- * SCALE_THERM_100K_PULLUP: Returns temperature in millidegC.
- *				 Uses a mapping table with 100K pullup.
- * SCALE_PMIC_THERM: Returns result in milli degree's Centigrade.
- * SCALE_XOTHERM: Returns XO thermistor voltage in millidegC.
- * SCALE_PMI_CHG_TEMP: Conversion for PMI CHG temp
- * SCALE_HW_CALIB_DEFAULT: Default scaling to convert raw adc code to
- *	voltage (uV) with hardware applied offset/slope values to adc code.
- * SCALE_HW_CALIB_THERM_100K_PULLUP: Returns temperature in millidegC using
- *	lookup table. The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_XOTHERM: Returns XO thermistor voltage in millidegC using
- *	100k pullup. The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_PMIC_THERM: Returns result in milli degree's Centigrade.
- *	The hardware applies offset/slope to adc code.
- * SCALE_HW_CALIB_PM5_CHG_TEMP: Returns result in millidegrees for PMIC5
- *	charger temperature.
- * SCALE_HW_CALIB_PM5_SMB_TEMP: Returns result in millidegrees for PMIC5
- *	SMB1390 temperature.
- */
-enum vadc_scale_fn_type {
-	SCALE_DEFAULT = 0,
-	SCALE_THERM_100K_PULLUP,
-	SCALE_PMIC_THERM,
-	SCALE_XOTHERM,
-	SCALE_PMI_CHG_TEMP,
-	SCALE_HW_CALIB_DEFAULT,
-	SCALE_HW_CALIB_THERM_100K_PULLUP,
-	SCALE_HW_CALIB_XOTHERM,
-	SCALE_HW_CALIB_PMIC_THERM,
-	SCALE_HW_CALIB_PM5_CHG_TEMP,
-	SCALE_HW_CALIB_PM5_SMB_TEMP,
-	SCALE_HW_CALIB_INVALID,
-};
-
-struct adc5_data {
-	const u32	full_scale_code_volt;
-	const u32	full_scale_code_cur;
-	const struct adc5_channels *adc_chans;
-	unsigned int	*decimation;
-	unsigned int	*hw_settle_1;
-	unsigned int	*hw_settle_2;
-};
-
-int qcom_vadc_scale(enum vadc_scale_fn_type scaletype,
-		    const struct vadc_linear_graph *calib_graph,
-		    const struct vadc_prescale_ratio *prescale,
-		    bool absolute,
-		    u16 adc_code, int *result_mdec);
-
-struct qcom_adc5_scale_type {
-	int (*scale_fn)(const struct vadc_prescale_ratio *prescale,
-		const struct adc5_data *data, u16 adc_code, int *result);
-};
-
-int qcom_adc5_hw_scale(enum vadc_scale_fn_type scaletype,
-		    const struct vadc_prescale_ratio *prescale,
-		    const struct adc5_data *data,
-		    u16 adc_code, int *result_mdec);
-
-int qcom_vadc_decimation_from_dt(u32 value);
-
-#endif /* QCOM_VADC_COMMON_H */
diff --git a/drivers/iio/adc/rcar-gyroadc.c b/drivers/iio/adc/rcar-gyroadc.c
index 63ce743ee7af..27d9e147b4b7 100644
--- a/drivers/iio/adc/rcar-gyroadc.c
+++ b/drivers/iio/adc/rcar-gyroadc.c
@@ -162,18 +162,13 @@ static const struct iio_chan_spec rcar_gyroadc_iio_channels_3[] = {
 static int rcar_gyroadc_set_power(struct rcar_gyroadc *priv, bool on)
 {
 	struct device *dev = priv->dev;
-	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(dev);
+		return pm_runtime_resume_and_get(dev);
 	} else {
 		pm_runtime_mark_last_busy(dev);
-		ret = pm_runtime_put_autosuspend(dev);
+		return pm_runtime_put_autosuspend(dev);
 	}
-
-	return ret;
 }
 
 static int rcar_gyroadc_read_raw(struct iio_dev *indio_dev,
@@ -357,7 +352,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 			num_channels = ARRAY_SIZE(rcar_gyroadc_iio_channels_3);
 			break;
 		default:
-			return -EINVAL;
+			goto err_e_inval;
 		}
 
 		/*
@@ -374,7 +369,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 				dev_err(dev,
 					"Failed to get child reg property of ADC \"%pOFn\".\n",
 					child);
-				return ret;
+				goto err_of_node_put;
 			}
 
 			/* Channel number is too high. */
@@ -382,7 +377,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 				dev_err(dev,
 					"Only %i channels supported with %pOFn, but reg = <%i>.\n",
 					num_channels, child, reg);
-				return -EINVAL;
+				goto err_e_inval;
 			}
 		}
 
@@ -391,7 +386,7 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 			dev_err(dev,
 				"Channel %i uses different ADC mode than the rest.\n",
 				reg);
-			return -EINVAL;
+			goto err_e_inval;
 		}
 
 		/* Channel is valid, grab the regulator. */
@@ -401,7 +396,8 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 		if (IS_ERR(vref)) {
 			dev_dbg(dev, "Channel %i 'vref' supply not connected.\n",
 				reg);
-			return PTR_ERR(vref);
+			ret = PTR_ERR(vref);
+			goto err_of_node_put;
 		}
 
 		priv->vref[reg] = vref;
@@ -425,8 +421,10 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 		 * attached to the GyroADC at a time, so if we found it,
 		 * we can stop parsing here.
 		 */
-		if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A)
+		if (childmode == RCAR_GYROADC_MODE_SELECT_1_MB88101A) {
+			of_node_put(child);
 			break;
+		}
 	}
 
 	if (first) {
@@ -435,6 +433,12 @@ static int rcar_gyroadc_parse_subdevs(struct iio_dev *indio_dev)
 	}
 
 	return 0;
+
+err_e_inval:
+	ret = -EINVAL;
+err_of_node_put:
+	of_node_put(child);
+	return ret;
 }
 
 static void rcar_gyroadc_deinit_supplies(struct iio_dev *indio_dev)
@@ -495,12 +499,9 @@ static int rcar_gyroadc_probe(struct platform_device *pdev)
 		return PTR_ERR(priv->regs);
 
 	priv->clk = devm_clk_get(dev, "fck");
-	if (IS_ERR(priv->clk)) {
-		ret = PTR_ERR(priv->clk);
-		if (ret != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get IF clock (ret=%i)\n", ret);
-		return ret;
-	}
+	if (IS_ERR(priv->clk))
+		return dev_err_probe(dev, PTR_ERR(priv->clk),
+				     "Failed to get IF clock\n");
 
 	ret = rcar_gyroadc_parse_subdevs(indio_dev);
 	if (ret)
@@ -510,14 +511,11 @@ static int rcar_gyroadc_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	priv->model = (enum rcar_gyroadc_model)
-		of_device_get_match_data(&pdev->dev);
+	priv->model = (uintptr_t)of_device_get_match_data(&pdev->dev);
 
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = DRIVER_NAME;
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &rcar_gyroadc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
@@ -531,7 +529,10 @@ static int rcar_gyroadc_probe(struct platform_device *pdev)
 	pm_runtime_use_autosuspend(dev);
 	pm_runtime_enable(dev);
 
-	pm_runtime_get_sync(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret)
+		goto err_power_up;
+
 	rcar_gyroadc_hw_init(priv);
 	rcar_gyroadc_hw_start(priv);
 
@@ -548,6 +549,7 @@ static int rcar_gyroadc_probe(struct platform_device *pdev)
 err_iio_device_register:
 	rcar_gyroadc_hw_stop(priv);
 	pm_runtime_put_sync(dev);
+err_power_up:
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
 	clk_disable_unprepare(priv->clk);
@@ -575,7 +577,6 @@ static int rcar_gyroadc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#if defined(CONFIG_PM)
 static int rcar_gyroadc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -595,10 +596,9 @@ static int rcar_gyroadc_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops rcar_gyroadc_pm_ops = {
-	SET_RUNTIME_PM_OPS(rcar_gyroadc_suspend, rcar_gyroadc_resume, NULL)
+	RUNTIME_PM_OPS(rcar_gyroadc_suspend, rcar_gyroadc_resume, NULL)
 };
 
 static struct platform_driver rcar_gyroadc_driver = {
@@ -607,7 +607,7 @@ static struct platform_driver rcar_gyroadc_driver = {
 	.driver         = {
 		.name		= DRIVER_NAME,
 		.of_match_table	= rcar_gyroadc_match,
-		.pm		= &rcar_gyroadc_pm_ops,
+		.pm		= pm_ptr(&rcar_gyroadc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/rn5t618-adc.c b/drivers/iio/adc/rn5t618-adc.c
new file mode 100644
index 000000000000..6bf32907f01d
--- /dev/null
+++ b/drivers/iio/adc/rn5t618-adc.c
@@ -0,0 +1,262 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * ADC driver for the RICOH RN5T618 power management chip family
+ *
+ * Copyright (C) 2019 Andreas Kemnade
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+#include <linux/init.h>
+#include <linux/module.h>
+#include <linux/mfd/rn5t618.h>
+#include <linux/platform_device.h>
+#include <linux/completion.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/driver.h>
+#include <linux/iio/machine.h>
+#include <linux/slab.h>
+
+#define RN5T618_ADC_CONVERSION_TIMEOUT   (msecs_to_jiffies(500))
+#define RN5T618_REFERENCE_VOLT 2500
+
+/* mask for selecting channels for single conversion */
+#define RN5T618_ADCCNT3_CHANNEL_MASK 0x7
+/* average 4-time conversion mode */
+#define RN5T618_ADCCNT3_AVG BIT(3)
+/* set for starting a single conversion, gets cleared by hw when done */
+#define RN5T618_ADCCNT3_GODONE BIT(4)
+/* automatic conversion, period is in ADCCNT2, selected channels are
+ * in ADCCNT1
+ */
+#define RN5T618_ADCCNT3_AUTO BIT(5)
+#define RN5T618_ADCEND_IRQ BIT(0)
+
+struct rn5t618_adc_data {
+	struct device *dev;
+	struct rn5t618 *rn5t618;
+	struct completion conv_completion;
+	int irq;
+};
+
+enum rn5t618_channels {
+	LIMMON = 0,
+	VBAT,
+	VADP,
+	VUSB,
+	VSYS,
+	VTHM,
+	AIN1,
+	AIN0
+};
+
+static const struct u16_fract rn5t618_ratios[8] = {
+	[LIMMON] = {50, 32}, /* measured across 20mOhm, amplified by 32 */
+	[VBAT] = {2, 1},
+	[VADP] = {3, 1},
+	[VUSB] = {3, 1},
+	[VSYS] = {3, 1},
+	[VTHM] = {1, 1},
+	[AIN1] = {1, 1},
+	[AIN0] = {1, 1},
+};
+
+static int rn5t618_read_adc_reg(struct rn5t618 *rn5t618, int reg, u16 *val)
+{
+	u8 data[2];
+	int ret;
+
+	ret = regmap_bulk_read(rn5t618->regmap, reg, data, sizeof(data));
+	if (ret < 0)
+		return ret;
+
+	*val = (data[0] << 4) | (data[1] & 0xF);
+
+	return 0;
+}
+
+static irqreturn_t rn5t618_adc_irq(int irq, void *data)
+{
+	struct rn5t618_adc_data *adc = data;
+	unsigned int r = 0;
+	int ret;
+
+	/* clear low & high threshold irqs */
+	regmap_write(adc->rn5t618->regmap, RN5T618_IR_ADC1, 0);
+	regmap_write(adc->rn5t618->regmap, RN5T618_IR_ADC2, 0);
+
+	ret = regmap_read(adc->rn5t618->regmap, RN5T618_IR_ADC3, &r);
+	if (ret < 0)
+		dev_err(adc->dev, "failed to read IRQ status: %d\n", ret);
+
+	regmap_write(adc->rn5t618->regmap, RN5T618_IR_ADC3, 0);
+
+	if (r & RN5T618_ADCEND_IRQ)
+		complete(&adc->conv_completion);
+
+	return IRQ_HANDLED;
+}
+
+static int rn5t618_adc_read(struct iio_dev *iio_dev,
+			    const struct iio_chan_spec *chan,
+			    int *val, int *val2, long mask)
+{
+	struct rn5t618_adc_data *adc = iio_priv(iio_dev);
+	u16 raw;
+	int ret;
+
+	if (mask == IIO_CHAN_INFO_SCALE) {
+		*val = RN5T618_REFERENCE_VOLT *
+		       rn5t618_ratios[chan->channel].numerator;
+		*val2 = rn5t618_ratios[chan->channel].denominator * 4095;
+
+		return IIO_VAL_FRACTIONAL;
+	}
+
+	/* select channel */
+	ret = regmap_update_bits(adc->rn5t618->regmap, RN5T618_ADCCNT3,
+				 RN5T618_ADCCNT3_CHANNEL_MASK,
+				 chan->channel);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_write(adc->rn5t618->regmap, RN5T618_EN_ADCIR3,
+			   RN5T618_ADCEND_IRQ);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_update_bits(adc->rn5t618->regmap, RN5T618_ADCCNT3,
+				 RN5T618_ADCCNT3_AVG,
+				 mask == IIO_CHAN_INFO_AVERAGE_RAW ?
+				 RN5T618_ADCCNT3_AVG : 0);
+	if (ret < 0)
+		return ret;
+
+	init_completion(&adc->conv_completion);
+	/* single conversion */
+	ret = regmap_update_bits(adc->rn5t618->regmap, RN5T618_ADCCNT3,
+				 RN5T618_ADCCNT3_GODONE,
+				 RN5T618_ADCCNT3_GODONE);
+	if (ret < 0)
+		return ret;
+
+	ret = wait_for_completion_timeout(&adc->conv_completion,
+					  RN5T618_ADC_CONVERSION_TIMEOUT);
+	if (ret == 0) {
+		dev_warn(adc->dev, "timeout waiting for adc result\n");
+		return -ETIMEDOUT;
+	}
+
+	ret = rn5t618_read_adc_reg(adc->rn5t618,
+				   RN5T618_ILIMDATAH + 2 * chan->channel,
+				   &raw);
+	if (ret < 0)
+		return ret;
+
+	*val = raw;
+
+	return IIO_VAL_INT;
+}
+
+static const struct iio_info rn5t618_adc_iio_info = {
+	.read_raw = &rn5t618_adc_read,
+};
+
+#define RN5T618_ADC_CHANNEL(_channel, _type, _name) { \
+	.type = _type, \
+	.channel = _channel, \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			      BIT(IIO_CHAN_INFO_AVERAGE_RAW) | \
+			      BIT(IIO_CHAN_INFO_SCALE), \
+	.datasheet_name = _name, \
+	.indexed = 1. \
+}
+
+static const struct iio_chan_spec rn5t618_adc_iio_channels[] = {
+	RN5T618_ADC_CHANNEL(LIMMON, IIO_CURRENT, "LIMMON"),
+	RN5T618_ADC_CHANNEL(VBAT, IIO_VOLTAGE, "VBAT"),
+	RN5T618_ADC_CHANNEL(VADP, IIO_VOLTAGE, "VADP"),
+	RN5T618_ADC_CHANNEL(VUSB, IIO_VOLTAGE, "VUSB"),
+	RN5T618_ADC_CHANNEL(VSYS, IIO_VOLTAGE, "VSYS"),
+	RN5T618_ADC_CHANNEL(VTHM, IIO_VOLTAGE, "VTHM"),
+	RN5T618_ADC_CHANNEL(AIN1, IIO_VOLTAGE, "AIN1"),
+	RN5T618_ADC_CHANNEL(AIN0, IIO_VOLTAGE, "AIN0")
+};
+
+static struct iio_map rn5t618_maps[] = {
+	IIO_MAP("VADP", "rn5t618-power", "vadp"),
+	IIO_MAP("VUSB", "rn5t618-power", "vusb"),
+	{ /* sentinel */ }
+};
+
+static int rn5t618_adc_probe(struct platform_device *pdev)
+{
+	int ret;
+	struct iio_dev *iio_dev;
+	struct rn5t618_adc_data *adc;
+	struct rn5t618 *rn5t618 = dev_get_drvdata(pdev->dev.parent);
+
+	iio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc));
+	if (!iio_dev) {
+		dev_err(&pdev->dev, "failed allocating iio device\n");
+		return -ENOMEM;
+	}
+
+	adc = iio_priv(iio_dev);
+	adc->dev = &pdev->dev;
+	adc->rn5t618 = rn5t618;
+
+	if (rn5t618->irq_data)
+		adc->irq = regmap_irq_get_virq(rn5t618->irq_data,
+					       RN5T618_IRQ_ADC);
+
+	if (adc->irq <= 0) {
+		dev_err(&pdev->dev, "get virq failed\n");
+		return -EINVAL;
+	}
+
+	init_completion(&adc->conv_completion);
+
+	iio_dev->name = dev_name(&pdev->dev);
+	iio_dev->info = &rn5t618_adc_iio_info;
+	iio_dev->modes = INDIO_DIRECT_MODE;
+	iio_dev->channels = rn5t618_adc_iio_channels;
+	iio_dev->num_channels = ARRAY_SIZE(rn5t618_adc_iio_channels);
+
+	/* stop any auto-conversion */
+	ret = regmap_write(rn5t618->regmap, RN5T618_ADCCNT3, 0);
+	if (ret < 0)
+		return ret;
+
+	platform_set_drvdata(pdev, iio_dev);
+
+	ret = devm_request_threaded_irq(adc->dev, adc->irq, NULL,
+					rn5t618_adc_irq,
+					IRQF_ONESHOT, dev_name(adc->dev),
+					adc);
+	if (ret < 0) {
+		dev_err(adc->dev, "request irq %d failed: %d\n", adc->irq, ret);
+		return ret;
+	}
+
+	ret = devm_iio_map_array_register(adc->dev, iio_dev, rn5t618_maps);
+	if (ret < 0)
+		return ret;
+
+	return devm_iio_device_register(adc->dev, iio_dev);
+}
+
+static struct platform_driver rn5t618_adc_driver = {
+	.driver = {
+		.name   = "rn5t618-adc",
+	},
+	.probe = rn5t618_adc_probe,
+};
+
+module_platform_driver(rn5t618_adc_driver);
+MODULE_ALIAS("platform:rn5t618-adc");
+MODULE_DESCRIPTION("RICOH RN5T618 ADC driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/adc/rockchip_saradc.c b/drivers/iio/adc/rockchip_saradc.c
index 582ba047c4a6..b87ea7148b58 100644
--- a/drivers/iio/adc/rockchip_saradc.c
+++ b/drivers/iio/adc/rockchip_saradc.c
@@ -15,7 +15,10 @@
 #include <linux/delay.h>
 #include <linux/reset.h>
 #include <linux/regulator/consumer.h>
+#include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 
 #define SARADC_DATA			0x00
 
@@ -32,9 +35,9 @@
 #define SARADC_DLY_PU_SOC_MASK		0x3f
 
 #define SARADC_TIMEOUT			msecs_to_jiffies(100)
+#define SARADC_MAX_CHANNELS		8
 
 struct rockchip_saradc_data {
-	int				num_bits;
 	const struct iio_chan_spec	*channels;
 	int				num_channels;
 	unsigned long			clk_rate;
@@ -46,11 +49,42 @@ struct rockchip_saradc {
 	struct clk		*clk;
 	struct completion	completion;
 	struct regulator	*vref;
+	int			uv_vref;
 	struct reset_control	*reset;
 	const struct rockchip_saradc_data *data;
 	u16			last_val;
+	const struct iio_chan_spec *last_chan;
+	struct notifier_block nb;
 };
 
+static void rockchip_saradc_power_down(struct rockchip_saradc *info)
+{
+	/* Clear irq & power down adc */
+	writel_relaxed(0, info->regs + SARADC_CTRL);
+}
+
+static int rockchip_saradc_conversion(struct rockchip_saradc *info,
+				   struct iio_chan_spec const *chan)
+{
+	reinit_completion(&info->completion);
+
+	/* 8 clock periods as delay between power up and start cmd */
+	writel_relaxed(8, info->regs + SARADC_DLY_PU_SOC);
+
+	info->last_chan = chan;
+
+	/* Select the channel to be used and trigger conversion */
+	writel(SARADC_CTRL_POWER_CTRL
+			| (chan->channel & SARADC_CTRL_CHN_MASK)
+			| SARADC_CTRL_IRQ_ENABLE,
+		   info->regs + SARADC_CTRL);
+
+	if (!wait_for_completion_timeout(&info->completion, SARADC_TIMEOUT))
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
 static int rockchip_saradc_read_raw(struct iio_dev *indio_dev,
 				    struct iio_chan_spec const *chan,
 				    int *val, int *val2, long mask)
@@ -62,36 +96,19 @@ static int rockchip_saradc_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_RAW:
 		mutex_lock(&indio_dev->mlock);
 
-		reinit_completion(&info->completion);
-
-		/* 8 clock periods as delay between power up and start cmd */
-		writel_relaxed(8, info->regs + SARADC_DLY_PU_SOC);
-
-		/* Select the channel to be used and trigger conversion */
-		writel(SARADC_CTRL_POWER_CTRL
-				| (chan->channel & SARADC_CTRL_CHN_MASK)
-				| SARADC_CTRL_IRQ_ENABLE,
-		       info->regs + SARADC_CTRL);
-
-		if (!wait_for_completion_timeout(&info->completion,
-						 SARADC_TIMEOUT)) {
-			writel_relaxed(0, info->regs + SARADC_CTRL);
+		ret = rockchip_saradc_conversion(info, chan);
+		if (ret) {
+			rockchip_saradc_power_down(info);
 			mutex_unlock(&indio_dev->mlock);
-			return -ETIMEDOUT;
+			return ret;
 		}
 
 		*val = info->last_val;
 		mutex_unlock(&indio_dev->mlock);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
-		ret = regulator_get_voltage(info->vref);
-		if (ret < 0) {
-			dev_err(&indio_dev->dev, "failed to get voltage\n");
-			return ret;
-		}
-
-		*val = ret / 1000;
-		*val2 = info->data->num_bits;
+		*val = info->uv_vref / 1000;
+		*val2 = chan->scan_type.realbits;
 		return IIO_VAL_FRACTIONAL_LOG2;
 	default:
 		return -EINVAL;
@@ -104,10 +121,9 @@ static irqreturn_t rockchip_saradc_isr(int irq, void *dev_id)
 
 	/* Read value */
 	info->last_val = readl_relaxed(info->regs + SARADC_DATA);
-	info->last_val &= GENMASK(info->data->num_bits - 1, 0);
+	info->last_val &= GENMASK(info->last_chan->scan_type.realbits - 1, 0);
 
-	/* Clear irq & power down adc */
-	writel_relaxed(0, info->regs + SARADC_CTRL);
+	rockchip_saradc_power_down(info);
 
 	complete(&info->completion);
 
@@ -118,56 +134,77 @@ static const struct iio_info rockchip_saradc_iio_info = {
 	.read_raw = rockchip_saradc_read_raw,
 };
 
-#define ADC_CHANNEL(_index, _id) {				\
+#define SARADC_CHANNEL(_index, _id, _res) {			\
 	.type = IIO_VOLTAGE,					\
 	.indexed = 1,						\
 	.channel = _index,					\
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
 	.datasheet_name = _id,					\
+	.scan_index = _index,					\
+	.scan_type = {						\
+		.sign = 'u',					\
+		.realbits = _res,				\
+		.storagebits = 16,				\
+		.endianness = IIO_CPU,				\
+	},							\
 }
 
 static const struct iio_chan_spec rockchip_saradc_iio_channels[] = {
-	ADC_CHANNEL(0, "adc0"),
-	ADC_CHANNEL(1, "adc1"),
-	ADC_CHANNEL(2, "adc2"),
+	SARADC_CHANNEL(0, "adc0", 10),
+	SARADC_CHANNEL(1, "adc1", 10),
+	SARADC_CHANNEL(2, "adc2", 10),
 };
 
 static const struct rockchip_saradc_data saradc_data = {
-	.num_bits = 10,
 	.channels = rockchip_saradc_iio_channels,
 	.num_channels = ARRAY_SIZE(rockchip_saradc_iio_channels),
 	.clk_rate = 1000000,
 };
 
 static const struct iio_chan_spec rockchip_rk3066_tsadc_iio_channels[] = {
-	ADC_CHANNEL(0, "adc0"),
-	ADC_CHANNEL(1, "adc1"),
+	SARADC_CHANNEL(0, "adc0", 12),
+	SARADC_CHANNEL(1, "adc1", 12),
 };
 
 static const struct rockchip_saradc_data rk3066_tsadc_data = {
-	.num_bits = 12,
 	.channels = rockchip_rk3066_tsadc_iio_channels,
 	.num_channels = ARRAY_SIZE(rockchip_rk3066_tsadc_iio_channels),
 	.clk_rate = 50000,
 };
 
 static const struct iio_chan_spec rockchip_rk3399_saradc_iio_channels[] = {
-	ADC_CHANNEL(0, "adc0"),
-	ADC_CHANNEL(1, "adc1"),
-	ADC_CHANNEL(2, "adc2"),
-	ADC_CHANNEL(3, "adc3"),
-	ADC_CHANNEL(4, "adc4"),
-	ADC_CHANNEL(5, "adc5"),
+	SARADC_CHANNEL(0, "adc0", 10),
+	SARADC_CHANNEL(1, "adc1", 10),
+	SARADC_CHANNEL(2, "adc2", 10),
+	SARADC_CHANNEL(3, "adc3", 10),
+	SARADC_CHANNEL(4, "adc4", 10),
+	SARADC_CHANNEL(5, "adc5", 10),
 };
 
 static const struct rockchip_saradc_data rk3399_saradc_data = {
-	.num_bits = 10,
 	.channels = rockchip_rk3399_saradc_iio_channels,
 	.num_channels = ARRAY_SIZE(rockchip_rk3399_saradc_iio_channels),
 	.clk_rate = 1000000,
 };
 
+static const struct iio_chan_spec rockchip_rk3568_saradc_iio_channels[] = {
+	SARADC_CHANNEL(0, "adc0", 10),
+	SARADC_CHANNEL(1, "adc1", 10),
+	SARADC_CHANNEL(2, "adc2", 10),
+	SARADC_CHANNEL(3, "adc3", 10),
+	SARADC_CHANNEL(4, "adc4", 10),
+	SARADC_CHANNEL(5, "adc5", 10),
+	SARADC_CHANNEL(6, "adc6", 10),
+	SARADC_CHANNEL(7, "adc7", 10),
+};
+
+static const struct rockchip_saradc_data rk3568_saradc_data = {
+	.channels = rockchip_rk3568_saradc_iio_channels,
+	.num_channels = ARRAY_SIZE(rockchip_rk3568_saradc_iio_channels),
+	.clk_rate = 1000000,
+};
+
 static const struct of_device_id rockchip_saradc_match[] = {
 	{
 		.compatible = "rockchip,saradc",
@@ -178,12 +215,15 @@ static const struct of_device_id rockchip_saradc_match[] = {
 	}, {
 		.compatible = "rockchip,rk3399-saradc",
 		.data = &rk3399_saradc_data,
+	}, {
+		.compatible = "rockchip,rk3568-saradc",
+		.data = &rk3568_saradc_data,
 	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, rockchip_saradc_match);
 
-/**
+/*
  * Reset SARADC Controller.
  */
 static void rockchip_saradc_reset_controller(struct reset_control *reset)
@@ -193,12 +233,92 @@ static void rockchip_saradc_reset_controller(struct reset_control *reset)
 	reset_control_deassert(reset);
 }
 
+static void rockchip_saradc_clk_disable(void *data)
+{
+	struct rockchip_saradc *info = data;
+
+	clk_disable_unprepare(info->clk);
+}
+
+static void rockchip_saradc_pclk_disable(void *data)
+{
+	struct rockchip_saradc *info = data;
+
+	clk_disable_unprepare(info->pclk);
+}
+
+static void rockchip_saradc_regulator_disable(void *data)
+{
+	struct rockchip_saradc *info = data;
+
+	regulator_disable(info->vref);
+}
+
+static irqreturn_t rockchip_saradc_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *i_dev = pf->indio_dev;
+	struct rockchip_saradc *info = iio_priv(i_dev);
+	/*
+	 * @values: each channel takes an u16 value
+	 * @timestamp: will be 8-byte aligned automatically
+	 */
+	struct {
+		u16 values[SARADC_MAX_CHANNELS];
+		int64_t timestamp;
+	} data;
+	int ret;
+	int i, j = 0;
+
+	mutex_lock(&i_dev->mlock);
+
+	for_each_set_bit(i, i_dev->active_scan_mask, i_dev->masklength) {
+		const struct iio_chan_spec *chan = &i_dev->channels[i];
+
+		ret = rockchip_saradc_conversion(info, chan);
+		if (ret) {
+			rockchip_saradc_power_down(info);
+			goto out;
+		}
+
+		data.values[j] = info->last_val;
+		j++;
+	}
+
+	iio_push_to_buffers_with_timestamp(i_dev, &data, iio_get_time_ns(i_dev));
+out:
+	mutex_unlock(&i_dev->mlock);
+
+	iio_trigger_notify_done(i_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static int rockchip_saradc_volt_notify(struct notifier_block *nb,
+						   unsigned long event,
+						   void *data)
+{
+	struct rockchip_saradc *info =
+			container_of(nb, struct rockchip_saradc, nb);
+
+	if (event & REGULATOR_EVENT_VOLTAGE_CHANGE)
+		info->uv_vref = (unsigned long)data;
+
+	return NOTIFY_OK;
+}
+
+static void rockchip_saradc_regulator_unreg_notifier(void *data)
+{
+	struct rockchip_saradc *info = data;
+
+	regulator_unregister_notifier(info->vref, &info->nb);
+}
+
 static int rockchip_saradc_probe(struct platform_device *pdev)
 {
 	struct rockchip_saradc *info = NULL;
 	struct device_node *np = pdev->dev.of_node;
 	struct iio_dev *indio_dev = NULL;
-	struct resource	*mem;
 	const struct of_device_id *match;
 	int ret;
 	int irq;
@@ -221,8 +341,13 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
 
 	info->data = match->data;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	info->regs = devm_ioremap_resource(&pdev->dev, mem);
+	/* Sanity check for possible later IP variants with more channels */
+	if (info->data->num_channels > SARADC_MAX_CHANNELS) {
+		dev_err(&pdev->dev, "max channels exceeded");
+		return -EINVAL;
+	}
+
+	info->regs = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(info->regs))
 		return PTR_ERR(info->regs);
 
@@ -235,7 +360,8 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
 	if (IS_ERR(info->reset)) {
 		ret = PTR_ERR(info->reset);
 		if (ret != -ENOENT)
-			return ret;
+			return dev_err_probe(&pdev->dev, ret,
+					     "failed to get saradc-apb\n");
 
 		dev_dbg(&pdev->dev, "no reset control found\n");
 		info->reset = NULL;
@@ -245,7 +371,7 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
 
 	irq = platform_get_irq(pdev, 0);
 	if (irq < 0)
-		return irq;
+		return dev_err_probe(&pdev->dev, irq, "failed to get irq\n");
 
 	ret = devm_request_irq(&pdev->dev, irq, rockchip_saradc_isr,
 			       0, dev_name(&pdev->dev), info);
@@ -255,23 +381,19 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
 	}
 
 	info->pclk = devm_clk_get(&pdev->dev, "apb_pclk");
-	if (IS_ERR(info->pclk)) {
-		dev_err(&pdev->dev, "failed to get pclk\n");
-		return PTR_ERR(info->pclk);
-	}
+	if (IS_ERR(info->pclk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->pclk),
+				     "failed to get pclk\n");
 
 	info->clk = devm_clk_get(&pdev->dev, "saradc");
-	if (IS_ERR(info->clk)) {
-		dev_err(&pdev->dev, "failed to get adc clock\n");
-		return PTR_ERR(info->clk);
-	}
+	if (IS_ERR(info->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->clk),
+				     "failed to get adc clock\n");
 
 	info->vref = devm_regulator_get(&pdev->dev, "vref");
-	if (IS_ERR(info->vref)) {
-		dev_err(&pdev->dev, "failed to get regulator, %ld\n",
-			PTR_ERR(info->vref));
-		return PTR_ERR(info->vref);
-	}
+	if (IS_ERR(info->vref))
+		return dev_err_probe(&pdev->dev, PTR_ERR(info->vref),
+				     "failed to get regulator\n");
 
 	if (info->reset)
 		rockchip_saradc_reset_controller(info->reset);
@@ -291,59 +413,74 @@ static int rockchip_saradc_probe(struct platform_device *pdev)
 		dev_err(&pdev->dev, "failed to enable vref regulator\n");
 		return ret;
 	}
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rockchip_saradc_regulator_disable, info);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register devm action, %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = regulator_get_voltage(info->vref);
+	if (ret < 0)
+		return ret;
+
+	info->uv_vref = ret;
 
 	ret = clk_prepare_enable(info->pclk);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to enable pclk\n");
-		goto err_reg_voltage;
+		return ret;
+	}
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rockchip_saradc_pclk_disable, info);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register devm action, %d\n",
+			ret);
+		return ret;
 	}
 
 	ret = clk_prepare_enable(info->clk);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "failed to enable converter clock\n");
-		goto err_pclk;
+		return ret;
+	}
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rockchip_saradc_clk_disable, info);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register devm action, %d\n",
+			ret);
+		return ret;
 	}
 
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &rockchip_saradc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	indio_dev->channels = info->data->channels;
 	indio_dev->num_channels = info->data->num_channels;
-
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_triggered_buffer_setup(&indio_dev->dev, indio_dev, NULL,
+					      rockchip_saradc_trigger_handler,
+					      NULL);
 	if (ret)
-		goto err_clk;
-
-	return 0;
-
-err_clk:
-	clk_disable_unprepare(info->clk);
-err_pclk:
-	clk_disable_unprepare(info->pclk);
-err_reg_voltage:
-	regulator_disable(info->vref);
-	return ret;
-}
+		return ret;
 
-static int rockchip_saradc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct rockchip_saradc *info = iio_priv(indio_dev);
+	info->nb.notifier_call = rockchip_saradc_volt_notify;
+	ret = regulator_register_notifier(info->vref, &info->nb);
+	if (ret)
+		return ret;
 
-	iio_device_unregister(indio_dev);
-	clk_disable_unprepare(info->clk);
-	clk_disable_unprepare(info->pclk);
-	regulator_disable(info->vref);
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rockchip_saradc_regulator_unreg_notifier,
+				       info);
+	if (ret)
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int rockchip_saradc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -372,22 +509,21 @@ static int rockchip_saradc_resume(struct device *dev)
 
 	ret = clk_prepare_enable(info->clk);
 	if (ret)
-		return ret;
+		clk_disable_unprepare(info->pclk);
 
 	return ret;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(rockchip_saradc_pm_ops,
-			 rockchip_saradc_suspend, rockchip_saradc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(rockchip_saradc_pm_ops,
+				rockchip_saradc_suspend,
+				rockchip_saradc_resume);
 
 static struct platform_driver rockchip_saradc_driver = {
 	.probe		= rockchip_saradc_probe,
-	.remove		= rockchip_saradc_remove,
 	.driver		= {
 		.name	= "rockchip-saradc",
 		.of_match_table = rockchip_saradc_match,
-		.pm	= &rockchip_saradc_pm_ops,
+		.pm	= pm_sleep_ptr(&rockchip_saradc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/rtq6056.c b/drivers/iio/adc/rtq6056.c
new file mode 100644
index 000000000000..c1b2e8dc9a26
--- /dev/null
+++ b/drivers/iio/adc/rtq6056.c
@@ -0,0 +1,661 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (c) 2022 Richtek Technology Corp.
+ *
+ * ChiYuan Huang <cy_huang@richtek.com>
+ */
+
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <linux/util_macros.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#define RTQ6056_REG_CONFIG	0x00
+#define RTQ6056_REG_SHUNTVOLT	0x01
+#define RTQ6056_REG_BUSVOLT	0x02
+#define RTQ6056_REG_POWER	0x03
+#define RTQ6056_REG_CURRENT	0x04
+#define RTQ6056_REG_CALIBRATION	0x05
+#define RTQ6056_REG_MASKENABLE	0x06
+#define RTQ6056_REG_ALERTLIMIT	0x07
+#define RTQ6056_REG_MANUFACTID	0xFE
+#define RTQ6056_REG_DIEID	0xFF
+
+#define RTQ6056_VENDOR_ID	0x1214
+#define RTQ6056_DEFAULT_CONFIG	0x4127
+#define RTQ6056_CONT_ALLON	7
+
+enum {
+	RTQ6056_CH_VSHUNT = 0,
+	RTQ6056_CH_VBUS,
+	RTQ6056_CH_POWER,
+	RTQ6056_CH_CURRENT,
+	RTQ6056_MAX_CHANNEL
+};
+
+enum {
+	F_OPMODE = 0,
+	F_VSHUNTCT,
+	F_VBUSCT,
+	F_AVG,
+	F_RESET,
+	F_MAX_FIELDS
+};
+
+struct rtq6056_priv {
+	struct device *dev;
+	struct regmap *regmap;
+	struct regmap_field *rm_fields[F_MAX_FIELDS];
+	u32 shunt_resistor_uohm;
+	int vshuntct_us;
+	int vbusct_us;
+	int avg_sample;
+};
+
+static const struct reg_field rtq6056_reg_fields[F_MAX_FIELDS] = {
+	[F_OPMODE] = REG_FIELD(RTQ6056_REG_CONFIG, 0, 2),
+	[F_VSHUNTCT] = REG_FIELD(RTQ6056_REG_CONFIG, 3, 5),
+	[F_VBUSCT] = REG_FIELD(RTQ6056_REG_CONFIG, 6, 8),
+	[F_AVG]	= REG_FIELD(RTQ6056_REG_CONFIG, 9, 11),
+	[F_RESET] = REG_FIELD(RTQ6056_REG_CONFIG, 15, 15),
+};
+
+static const struct iio_chan_spec rtq6056_channels[RTQ6056_MAX_CHANNEL + 1] = {
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 0,
+		.address = RTQ6056_REG_SHUNTVOLT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	{
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 1,
+		.address = RTQ6056_REG_BUSVOLT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 1,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	{
+		.type = IIO_POWER,
+		.indexed = 1,
+		.channel = 2,
+		.address = RTQ6056_REG_POWER,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 2,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	{
+		.type = IIO_CURRENT,
+		.indexed = 1,
+		.channel = 3,
+		.address = RTQ6056_REG_CURRENT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.scan_index = 3,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(RTQ6056_MAX_CHANNEL),
+};
+
+static int rtq6056_adc_read_channel(struct rtq6056_priv *priv,
+				    struct iio_chan_spec const *ch,
+				    int *val)
+{
+	struct device *dev = priv->dev;
+	unsigned int addr = ch->address;
+	unsigned int regval;
+	int ret;
+
+	pm_runtime_get_sync(dev);
+	ret = regmap_read(priv->regmap, addr, &regval);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put(dev);
+	if (ret)
+		return ret;
+
+	/* Power and VBUS is unsigned 16-bit, others are signed 16-bit */
+	if (addr == RTQ6056_REG_BUSVOLT || addr == RTQ6056_REG_POWER)
+		*val = regval;
+	else
+		*val = sign_extend32(regval, 16);
+
+	return IIO_VAL_INT;
+}
+
+static int rtq6056_adc_read_scale(struct iio_chan_spec const *ch, int *val,
+				  int *val2)
+{
+	switch (ch->address) {
+	case RTQ6056_REG_SHUNTVOLT:
+		/* VSHUNT lsb  2.5uV */
+		*val = 2500;
+		*val2 = 1000000;
+		return IIO_VAL_FRACTIONAL;
+	case RTQ6056_REG_BUSVOLT:
+		/* VBUS lsb 1.25mV */
+		*val = 1250;
+		*val2 = 1000;
+		return IIO_VAL_FRACTIONAL;
+	case RTQ6056_REG_POWER:
+		/* Power lsb 25mW */
+		*val = 25;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+/*
+ * Sample frequency for channel VSHUNT and VBUS. The indices correspond
+ * with the bit value expected by the chip. And it can be found at
+ * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
+ */
+static const int rtq6056_samp_freq_list[] = {
+	7194, 4926, 3717, 1904, 964, 485, 243, 122,
+};
+
+static int rtq6056_adc_set_samp_freq(struct rtq6056_priv *priv,
+				     struct iio_chan_spec const *ch, int val)
+{
+	struct regmap_field *rm_field;
+	unsigned int selector;
+	int *ct, ret;
+
+	if (val > 7194 || val < 122)
+		return -EINVAL;
+
+	if (ch->address == RTQ6056_REG_SHUNTVOLT) {
+		rm_field = priv->rm_fields[F_VSHUNTCT];
+		ct = &priv->vshuntct_us;
+	} else if (ch->address == RTQ6056_REG_BUSVOLT) {
+		rm_field = priv->rm_fields[F_VBUSCT];
+		ct = &priv->vbusct_us;
+	} else
+		return -EINVAL;
+
+	selector = find_closest_descending(val, rtq6056_samp_freq_list,
+					   ARRAY_SIZE(rtq6056_samp_freq_list));
+
+	ret = regmap_field_write(rm_field, selector);
+	if (ret)
+		return ret;
+
+	*ct = 1000000 / rtq6056_samp_freq_list[selector];
+
+	return 0;
+}
+
+/*
+ * Available averaging rate for rtq6056. The indices correspond with the bit
+ * value expected by the chip. And it can be found at
+ * https://www.richtek.com/assets/product_file/RTQ6056/DSQ6056-00.pdf
+ */
+static const int rtq6056_avg_sample_list[] = {
+	1, 4, 16, 64, 128, 256, 512, 1024,
+};
+
+static int rtq6056_adc_set_average(struct rtq6056_priv *priv, int val)
+{
+	unsigned int selector;
+	int ret;
+
+	if (val > 1024 || val < 1)
+		return -EINVAL;
+
+	selector = find_closest(val, rtq6056_avg_sample_list,
+				ARRAY_SIZE(rtq6056_avg_sample_list));
+
+	ret = regmap_field_write(priv->rm_fields[F_AVG], selector);
+	if (ret)
+		return ret;
+
+	priv->avg_sample = rtq6056_avg_sample_list[selector];
+
+	return 0;
+}
+
+static int rtq6056_adc_get_sample_freq(struct rtq6056_priv *priv,
+				       struct iio_chan_spec const *ch, int *val)
+{
+	int sample_time;
+
+	if (ch->address == RTQ6056_REG_SHUNTVOLT)
+		sample_time = priv->vshuntct_us;
+	else if (ch->address == RTQ6056_REG_BUSVOLT)
+		sample_time = priv->vbusct_us;
+	else {
+		sample_time = priv->vshuntct_us + priv->vbusct_us;
+		sample_time *= priv->avg_sample;
+	}
+
+	*val = 1000000 / sample_time;
+
+	return IIO_VAL_INT;
+}
+
+static int rtq6056_adc_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan, int *val,
+				int *val2, long mask)
+{
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		return rtq6056_adc_read_channel(priv, chan, val);
+	case IIO_CHAN_INFO_SCALE:
+		return rtq6056_adc_read_scale(chan, val, val2);
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*val = priv->avg_sample;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return rtq6056_adc_get_sample_freq(priv, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rtq6056_adc_read_avail(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  const int **vals, int *type, int *length,
+				  long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = rtq6056_samp_freq_list;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(rtq6056_samp_freq_list);
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*vals = rtq6056_avg_sample_list;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(rtq6056_avg_sample_list);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rtq6056_adc_write_raw(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan, int val,
+				 int val2, long mask)
+{
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = rtq6056_adc_set_samp_freq(priv, chan, val);
+		break;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		ret = rtq6056_adc_set_average(priv, val);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static const char *rtq6056_channel_labels[RTQ6056_MAX_CHANNEL] = {
+	[RTQ6056_CH_VSHUNT] = "Vshunt",
+	[RTQ6056_CH_VBUS] = "Vbus",
+	[RTQ6056_CH_POWER] = "Power",
+	[RTQ6056_CH_CURRENT] = "Current",
+};
+
+static int rtq6056_adc_read_label(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  char *label)
+{
+	return sysfs_emit(label, "%s\n", rtq6056_channel_labels[chan->channel]);
+}
+
+static int rtq6056_set_shunt_resistor(struct rtq6056_priv *priv,
+				      int resistor_uohm)
+{
+	unsigned int calib_val;
+	int ret;
+
+	if (resistor_uohm <= 0) {
+		dev_err(priv->dev, "Invalid resistor [%d]\n", resistor_uohm);
+		return -EINVAL;
+	}
+
+	/* calibration = 5120000 / (Rshunt (uOhm) * current lsb (1mA)) */
+	calib_val = 5120000 / resistor_uohm;
+	ret = regmap_write(priv->regmap, RTQ6056_REG_CALIBRATION, calib_val);
+	if (ret)
+		return ret;
+
+	priv->shunt_resistor_uohm = resistor_uohm;
+
+	return 0;
+}
+
+static ssize_t shunt_resistor_show(struct device *dev,
+				   struct device_attribute *attr, char *buf)
+{
+	struct rtq6056_priv *priv = iio_priv(dev_to_iio_dev(dev));
+	int vals[2] = { priv->shunt_resistor_uohm, 1000000 };
+
+	return iio_format_value(buf, IIO_VAL_FRACTIONAL, 1, vals);
+}
+
+static ssize_t shunt_resistor_store(struct device *dev,
+				    struct device_attribute *attr,
+				    const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+	int val, val_fract, ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &val, &val_fract);
+	if (ret)
+		goto out_store;
+
+	ret = rtq6056_set_shunt_resistor(priv, val * 1000000 + val_fract);
+
+out_store:
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret ?: len;
+}
+
+static IIO_DEVICE_ATTR_RW(shunt_resistor, 0);
+
+static struct attribute *rtq6056_attributes[] = {
+	&iio_dev_attr_shunt_resistor.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group rtq6056_attribute_group = {
+	.attrs = rtq6056_attributes,
+};
+
+static const struct iio_info rtq6056_info = {
+	.attrs = &rtq6056_attribute_group,
+	.read_raw = rtq6056_adc_read_raw,
+	.read_avail = rtq6056_adc_read_avail,
+	.write_raw = rtq6056_adc_write_raw,
+	.read_label = rtq6056_adc_read_label,
+};
+
+static irqreturn_t rtq6056_buffer_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct rtq6056_priv *priv = iio_priv(indio_dev);
+	struct device *dev = priv->dev;
+	struct {
+		u16 vals[RTQ6056_MAX_CHANNEL];
+		s64 timestamp __aligned(8);
+	} data;
+	unsigned int raw;
+	int i = 0, bit, ret;
+
+	memset(&data, 0, sizeof(data));
+
+	pm_runtime_get_sync(dev);
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) {
+		unsigned int addr = rtq6056_channels[bit].address;
+
+		ret = regmap_read(priv->regmap, addr, &raw);
+		if (ret)
+			goto out;
+
+		data.vals[i++] = raw;
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &data, iio_get_time_ns(indio_dev));
+
+out:
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put(dev);
+
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static void rtq6056_enter_shutdown_state(void *dev)
+{
+	struct rtq6056_priv *priv = dev_get_drvdata(dev);
+
+	/* Enter shutdown state */
+	regmap_field_write(priv->rm_fields[F_OPMODE], 0);
+}
+
+static bool rtq6056_is_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RTQ6056_REG_CONFIG ... RTQ6056_REG_ALERTLIMIT:
+	case RTQ6056_REG_MANUFACTID ... RTQ6056_REG_DIEID:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool rtq6056_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case RTQ6056_REG_CONFIG:
+	case RTQ6056_REG_CALIBRATION ... RTQ6056_REG_ALERTLIMIT:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static const struct regmap_config rtq6056_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.val_format_endian = REGMAP_ENDIAN_BIG,
+	.max_register = RTQ6056_REG_DIEID,
+	.readable_reg = rtq6056_is_readable_reg,
+	.writeable_reg = rtq6056_is_writeable_reg,
+};
+
+static int rtq6056_probe(struct i2c_client *i2c)
+{
+	struct iio_dev *indio_dev;
+	struct rtq6056_priv *priv;
+	struct device *dev = &i2c->dev;
+	struct regmap *regmap;
+	unsigned int vendor_id, shunt_resistor_uohm;
+	int ret;
+
+	if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_WORD_DATA))
+		return -EOPNOTSUPP;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	priv = iio_priv(indio_dev);
+	priv->dev = dev;
+	priv->vshuntct_us = priv->vbusct_us = 1037;
+	priv->avg_sample = 1;
+	i2c_set_clientdata(i2c, priv);
+
+	regmap = devm_regmap_init_i2c(i2c, &rtq6056_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(dev, PTR_ERR(regmap),
+				     "Failed to init regmap\n");
+
+	priv->regmap = regmap;
+
+	ret = regmap_read(regmap, RTQ6056_REG_MANUFACTID, &vendor_id);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to get manufacturer info\n");
+
+	if (vendor_id != RTQ6056_VENDOR_ID)
+		return dev_err_probe(dev, -ENODEV,
+				     "Invalid vendor id 0x%04x\n", vendor_id);
+
+	ret = devm_regmap_field_bulk_alloc(dev, regmap, priv->rm_fields,
+					   rtq6056_reg_fields, F_MAX_FIELDS);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to init regmap field\n");
+
+	/*
+	 * By default, configure average sample as 1, bus and shunt conversion
+	 * time as 1037 microsecond, and operating mode to all on.
+	 */
+	ret = regmap_write(regmap, RTQ6056_REG_CONFIG, RTQ6056_DEFAULT_CONFIG);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to enable continuous sensing\n");
+
+	ret = devm_add_action_or_reset(dev, rtq6056_enter_shutdown_state, dev);
+	if (ret)
+		return ret;
+
+	pm_runtime_set_autosuspend_delay(dev, MSEC_PER_SEC);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_mark_last_busy(dev);
+	ret = devm_pm_runtime_enable(dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable pm_runtime\n");
+
+	/* By default, use 2000 micro-Ohm resistor */
+	shunt_resistor_uohm = 2000;
+	device_property_read_u32(dev, "shunt-resistor-micro-ohms",
+				 &shunt_resistor_uohm);
+
+	ret = rtq6056_set_shunt_resistor(priv, shunt_resistor_uohm);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to init shunt resistor\n");
+
+	indio_dev->name = "rtq6056";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = rtq6056_channels;
+	indio_dev->num_channels = ARRAY_SIZE(rtq6056_channels);
+	indio_dev->info = &rtq6056_info;
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+					      rtq6056_buffer_trigger_handler,
+					      NULL);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Failed to allocate iio trigger buffer\n");
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static int rtq6056_runtime_suspend(struct device *dev)
+{
+	struct rtq6056_priv *priv = dev_get_drvdata(dev);
+
+	/* Configure to shutdown mode */
+	return regmap_field_write(priv->rm_fields[F_OPMODE], 0);
+}
+
+static int rtq6056_runtime_resume(struct device *dev)
+{
+	struct rtq6056_priv *priv = dev_get_drvdata(dev);
+	int sample_rdy_time_us, ret;
+
+	ret = regmap_field_write(priv->rm_fields[F_OPMODE], RTQ6056_CONT_ALLON);
+	if (ret)
+		return ret;
+
+	sample_rdy_time_us = priv->vbusct_us + priv->vshuntct_us;
+	sample_rdy_time_us *= priv->avg_sample;
+
+	usleep_range(sample_rdy_time_us, sample_rdy_time_us + 100);
+
+	return 0;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(rtq6056_pm_ops, rtq6056_runtime_suspend,
+				 rtq6056_runtime_resume, NULL);
+
+static const struct of_device_id rtq6056_device_match[] = {
+	{ .compatible = "richtek,rtq6056" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, rtq6056_device_match);
+
+static struct i2c_driver rtq6056_driver = {
+	.driver = {
+		.name = "rtq6056",
+		.of_match_table = rtq6056_device_match,
+		.pm = pm_ptr(&rtq6056_pm_ops),
+	},
+	.probe_new = rtq6056_probe,
+};
+module_i2c_driver(rtq6056_driver);
+
+MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");
+MODULE_DESCRIPTION("Richtek RTQ6056 Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c
new file mode 100644
index 000000000000..0921ff2d9b3a
--- /dev/null
+++ b/drivers/iio/adc/rzg2l_adc.c
@@ -0,0 +1,602 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * RZ/G2L A/D Converter driver
+ *
+ *  Copyright (c) 2021 Renesas Electronics Europe GmbH
+ *
+ * Author: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/iio/iio.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+#include <linux/reset.h>
+
+#define DRIVER_NAME		"rzg2l-adc"
+
+#define RZG2L_ADM(n)			((n) * 0x4)
+#define RZG2L_ADM0_ADCE			BIT(0)
+#define RZG2L_ADM0_ADBSY		BIT(1)
+#define RZG2L_ADM0_PWDWNB		BIT(2)
+#define RZG2L_ADM0_SRESB		BIT(15)
+#define RZG2L_ADM1_TRG			BIT(0)
+#define RZG2L_ADM1_MS			BIT(2)
+#define RZG2L_ADM1_BS			BIT(4)
+#define RZG2L_ADM1_EGA_MASK		GENMASK(13, 12)
+#define RZG2L_ADM2_CHSEL_MASK		GENMASK(7, 0)
+#define RZG2L_ADM3_ADIL_MASK		GENMASK(31, 24)
+#define RZG2L_ADM3_ADCMP_MASK		GENMASK(23, 16)
+#define RZG2L_ADM3_ADCMP_E		FIELD_PREP(RZG2L_ADM3_ADCMP_MASK, 0xe)
+#define RZG2L_ADM3_ADSMP_MASK		GENMASK(15, 0)
+
+#define RZG2L_ADINT			0x20
+#define RZG2L_ADINT_INTEN_MASK		GENMASK(7, 0)
+#define RZG2L_ADINT_CSEEN		BIT(16)
+#define RZG2L_ADINT_INTS		BIT(31)
+
+#define RZG2L_ADSTS			0x24
+#define RZG2L_ADSTS_CSEST		BIT(16)
+#define RZG2L_ADSTS_INTST_MASK		GENMASK(7, 0)
+
+#define RZG2L_ADIVC			0x28
+#define RZG2L_ADIVC_DIVADC_MASK		GENMASK(8, 0)
+#define RZG2L_ADIVC_DIVADC_4		FIELD_PREP(RZG2L_ADIVC_DIVADC_MASK, 0x4)
+
+#define RZG2L_ADFIL			0x2c
+
+#define RZG2L_ADCR(n)			(0x30 + ((n) * 0x4))
+#define RZG2L_ADCR_AD_MASK		GENMASK(11, 0)
+
+#define RZG2L_ADSMP_DEFAULT_SAMPLING	0x578
+
+#define RZG2L_ADC_MAX_CHANNELS		8
+#define RZG2L_ADC_CHN_MASK		0x7
+#define RZG2L_ADC_TIMEOUT		usecs_to_jiffies(1 * 4)
+
+struct rzg2l_adc_data {
+	const struct iio_chan_spec *channels;
+	u8 num_channels;
+};
+
+struct rzg2l_adc {
+	void __iomem *base;
+	struct clk *pclk;
+	struct clk *adclk;
+	struct reset_control *presetn;
+	struct reset_control *adrstn;
+	struct completion completion;
+	const struct rzg2l_adc_data *data;
+	struct mutex lock;
+	u16 last_val[RZG2L_ADC_MAX_CHANNELS];
+};
+
+static const char * const rzg2l_adc_channel_name[] = {
+	"adc0",
+	"adc1",
+	"adc2",
+	"adc3",
+	"adc4",
+	"adc5",
+	"adc6",
+	"adc7",
+};
+
+static unsigned int rzg2l_adc_readl(struct rzg2l_adc *adc, u32 reg)
+{
+	return readl(adc->base + reg);
+}
+
+static void rzg2l_adc_writel(struct rzg2l_adc *adc, unsigned int reg, u32 val)
+{
+	writel(val, adc->base + reg);
+}
+
+static void rzg2l_adc_pwr(struct rzg2l_adc *adc, bool on)
+{
+	u32 reg;
+
+	reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));
+	if (on)
+		reg |= RZG2L_ADM0_PWDWNB;
+	else
+		reg &= ~RZG2L_ADM0_PWDWNB;
+	rzg2l_adc_writel(adc, RZG2L_ADM(0), reg);
+	udelay(2);
+}
+
+static void rzg2l_adc_start_stop(struct rzg2l_adc *adc, bool start)
+{
+	int timeout = 5;
+	u32 reg;
+
+	reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));
+	if (start)
+		reg |= RZG2L_ADM0_ADCE;
+	else
+		reg &= ~RZG2L_ADM0_ADCE;
+	rzg2l_adc_writel(adc, RZG2L_ADM(0), reg);
+
+	if (start)
+		return;
+
+	do {
+		usleep_range(100, 200);
+		reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));
+		timeout--;
+		if (!timeout) {
+			pr_err("%s stopping ADC timed out\n", __func__);
+			break;
+		}
+	} while (((reg & RZG2L_ADM0_ADBSY) || (reg & RZG2L_ADM0_ADCE)));
+}
+
+static void rzg2l_set_trigger(struct rzg2l_adc *adc)
+{
+	u32 reg;
+
+	/*
+	 * Setup ADM1 for SW trigger
+	 * EGA[13:12] - Set 00 to indicate hardware trigger is invalid
+	 * BS[4] - Enable 1-buffer mode
+	 * MS[1] - Enable Select mode
+	 * TRG[0] - Enable software trigger mode
+	 */
+	reg = rzg2l_adc_readl(adc, RZG2L_ADM(1));
+	reg &= ~RZG2L_ADM1_EGA_MASK;
+	reg &= ~RZG2L_ADM1_BS;
+	reg &= ~RZG2L_ADM1_TRG;
+	reg |= RZG2L_ADM1_MS;
+	rzg2l_adc_writel(adc, RZG2L_ADM(1), reg);
+}
+
+static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch)
+{
+	u32 reg;
+
+	if (rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_ADBSY)
+		return -EBUSY;
+
+	rzg2l_set_trigger(adc);
+
+	/* Select analog input channel subjected to conversion. */
+	reg = rzg2l_adc_readl(adc, RZG2L_ADM(2));
+	reg &= ~RZG2L_ADM2_CHSEL_MASK;
+	reg |= BIT(ch);
+	rzg2l_adc_writel(adc, RZG2L_ADM(2), reg);
+
+	/*
+	 * Setup ADINT
+	 * INTS[31] - Select pulse signal
+	 * CSEEN[16] - Enable channel select error interrupt
+	 * INTEN[7:0] - Select channel interrupt
+	 */
+	reg = rzg2l_adc_readl(adc, RZG2L_ADINT);
+	reg &= ~RZG2L_ADINT_INTS;
+	reg &= ~RZG2L_ADINT_INTEN_MASK;
+	reg |= (RZG2L_ADINT_CSEEN | BIT(ch));
+	rzg2l_adc_writel(adc, RZG2L_ADINT, reg);
+
+	return 0;
+}
+
+static int rzg2l_adc_set_power(struct iio_dev *indio_dev, bool on)
+{
+	struct device *dev = indio_dev->dev.parent;
+
+	if (on)
+		return pm_runtime_resume_and_get(dev);
+
+	return pm_runtime_put_sync(dev);
+}
+
+static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc, u8 ch)
+{
+	int ret;
+
+	ret = rzg2l_adc_set_power(indio_dev, true);
+	if (ret)
+		return ret;
+
+	ret = rzg2l_adc_conversion_setup(adc, ch);
+	if (ret) {
+		rzg2l_adc_set_power(indio_dev, false);
+		return ret;
+	}
+
+	reinit_completion(&adc->completion);
+
+	rzg2l_adc_start_stop(adc, true);
+
+	if (!wait_for_completion_timeout(&adc->completion, RZG2L_ADC_TIMEOUT)) {
+		rzg2l_adc_writel(adc, RZG2L_ADINT,
+				 rzg2l_adc_readl(adc, RZG2L_ADINT) & ~RZG2L_ADINT_INTEN_MASK);
+		rzg2l_adc_start_stop(adc, false);
+		rzg2l_adc_set_power(indio_dev, false);
+		return -ETIMEDOUT;
+	}
+
+	return rzg2l_adc_set_power(indio_dev, false);
+}
+
+static int rzg2l_adc_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val, int *val2, long mask)
+{
+	struct rzg2l_adc *adc = iio_priv(indio_dev);
+	int ret;
+	u8 ch;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->type != IIO_VOLTAGE)
+			return -EINVAL;
+
+		mutex_lock(&adc->lock);
+		ch = chan->channel & RZG2L_ADC_CHN_MASK;
+		ret = rzg2l_adc_conversion(indio_dev, adc, ch);
+		if (ret) {
+			mutex_unlock(&adc->lock);
+			return ret;
+		}
+		*val = adc->last_val[ch];
+		mutex_unlock(&adc->lock);
+
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int rzg2l_adc_read_label(struct iio_dev *iio_dev,
+				const struct iio_chan_spec *chan,
+				char *label)
+{
+	return sysfs_emit(label, "%s\n", rzg2l_adc_channel_name[chan->channel]);
+}
+
+static const struct iio_info rzg2l_adc_iio_info = {
+	.read_raw = rzg2l_adc_read_raw,
+	.read_label = rzg2l_adc_read_label,
+};
+
+static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id)
+{
+	struct rzg2l_adc *adc = dev_id;
+	unsigned long intst;
+	u32 reg;
+	int ch;
+
+	reg = rzg2l_adc_readl(adc, RZG2L_ADSTS);
+
+	/* A/D conversion channel select error interrupt */
+	if (reg & RZG2L_ADSTS_CSEST) {
+		rzg2l_adc_writel(adc, RZG2L_ADSTS, reg);
+		return IRQ_HANDLED;
+	}
+
+	intst = reg & RZG2L_ADSTS_INTST_MASK;
+	if (!intst)
+		return IRQ_NONE;
+
+	for_each_set_bit(ch, &intst, RZG2L_ADC_MAX_CHANNELS)
+		adc->last_val[ch] = rzg2l_adc_readl(adc, RZG2L_ADCR(ch)) & RZG2L_ADCR_AD_MASK;
+
+	/* clear the channel interrupt */
+	rzg2l_adc_writel(adc, RZG2L_ADSTS, reg);
+
+	complete(&adc->completion);
+
+	return IRQ_HANDLED;
+}
+
+static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc)
+{
+	struct iio_chan_spec *chan_array;
+	struct fwnode_handle *fwnode;
+	struct rzg2l_adc_data *data;
+	unsigned int channel;
+	int num_channels;
+	int ret;
+	u8 i;
+
+	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	num_channels = device_get_child_node_count(&pdev->dev);
+	if (!num_channels) {
+		dev_err(&pdev->dev, "no channel children\n");
+		return -ENODEV;
+	}
+
+	if (num_channels > RZG2L_ADC_MAX_CHANNELS) {
+		dev_err(&pdev->dev, "num of channel children out of range\n");
+		return -EINVAL;
+	}
+
+	chan_array = devm_kcalloc(&pdev->dev, num_channels, sizeof(*chan_array),
+				  GFP_KERNEL);
+	if (!chan_array)
+		return -ENOMEM;
+
+	i = 0;
+	device_for_each_child_node(&pdev->dev, fwnode) {
+		ret = fwnode_property_read_u32(fwnode, "reg", &channel);
+		if (ret) {
+			fwnode_handle_put(fwnode);
+			return ret;
+		}
+
+		if (channel >= RZG2L_ADC_MAX_CHANNELS) {
+			fwnode_handle_put(fwnode);
+			return -EINVAL;
+		}
+
+		chan_array[i].type = IIO_VOLTAGE;
+		chan_array[i].indexed = 1;
+		chan_array[i].channel = channel;
+		chan_array[i].info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+		chan_array[i].datasheet_name = rzg2l_adc_channel_name[channel];
+		i++;
+	}
+
+	data->num_channels = num_channels;
+	data->channels = chan_array;
+	adc->data = data;
+
+	return 0;
+}
+
+static int rzg2l_adc_hw_init(struct rzg2l_adc *adc)
+{
+	int timeout = 5;
+	u32 reg;
+	int ret;
+
+	ret = clk_prepare_enable(adc->pclk);
+	if (ret)
+		return ret;
+
+	/* SW reset */
+	reg = rzg2l_adc_readl(adc, RZG2L_ADM(0));
+	reg |= RZG2L_ADM0_SRESB;
+	rzg2l_adc_writel(adc, RZG2L_ADM(0), reg);
+
+	while (!(rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_SRESB)) {
+		if (!timeout) {
+			ret = -EBUSY;
+			goto exit_hw_init;
+		}
+		timeout--;
+		usleep_range(100, 200);
+	}
+
+	/* Only division by 4 can be set */
+	reg = rzg2l_adc_readl(adc, RZG2L_ADIVC);
+	reg &= ~RZG2L_ADIVC_DIVADC_MASK;
+	reg |= RZG2L_ADIVC_DIVADC_4;
+	rzg2l_adc_writel(adc, RZG2L_ADIVC, reg);
+
+	/*
+	 * Setup AMD3
+	 * ADIL[31:24] - Should be always set to 0
+	 * ADCMP[23:16] - Should be always set to 0xe
+	 * ADSMP[15:0] - Set default (0x578) sampling period
+	 */
+	reg = rzg2l_adc_readl(adc, RZG2L_ADM(3));
+	reg &= ~RZG2L_ADM3_ADIL_MASK;
+	reg &= ~RZG2L_ADM3_ADCMP_MASK;
+	reg &= ~RZG2L_ADM3_ADSMP_MASK;
+	reg |= (RZG2L_ADM3_ADCMP_E | RZG2L_ADSMP_DEFAULT_SAMPLING);
+	rzg2l_adc_writel(adc, RZG2L_ADM(3), reg);
+
+exit_hw_init:
+	clk_disable_unprepare(adc->pclk);
+
+	return ret;
+}
+
+static void rzg2l_adc_pm_runtime_disable(void *data)
+{
+	struct device *dev = data;
+
+	pm_runtime_disable(dev->parent);
+}
+
+static void rzg2l_adc_pm_runtime_set_suspended(void *data)
+{
+	struct device *dev = data;
+
+	pm_runtime_set_suspended(dev->parent);
+}
+
+static void rzg2l_adc_reset_assert(void *data)
+{
+	reset_control_assert(data);
+}
+
+static int rzg2l_adc_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct iio_dev *indio_dev;
+	struct rzg2l_adc *adc;
+	int ret;
+	int irq;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*adc));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	adc = iio_priv(indio_dev);
+
+	ret = rzg2l_adc_parse_properties(pdev, adc);
+	if (ret)
+		return ret;
+
+	mutex_init(&adc->lock);
+
+	adc->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(adc->base))
+		return PTR_ERR(adc->base);
+
+	adc->pclk = devm_clk_get(dev, "pclk");
+	if (IS_ERR(adc->pclk)) {
+		dev_err(dev, "Failed to get pclk");
+		return PTR_ERR(adc->pclk);
+	}
+
+	adc->adclk = devm_clk_get(dev, "adclk");
+	if (IS_ERR(adc->adclk)) {
+		dev_err(dev, "Failed to get adclk");
+		return PTR_ERR(adc->adclk);
+	}
+
+	adc->adrstn = devm_reset_control_get_exclusive(dev, "adrst-n");
+	if (IS_ERR(adc->adrstn)) {
+		dev_err(dev, "failed to get adrstn\n");
+		return PTR_ERR(adc->adrstn);
+	}
+
+	adc->presetn = devm_reset_control_get_exclusive(dev, "presetn");
+	if (IS_ERR(adc->presetn)) {
+		dev_err(dev, "failed to get presetn\n");
+		return PTR_ERR(adc->presetn);
+	}
+
+	ret = reset_control_deassert(adc->adrstn);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to deassert adrstn pin, %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rzg2l_adc_reset_assert, adc->adrstn);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register adrstn assert devm action, %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = reset_control_deassert(adc->presetn);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to deassert presetn pin, %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rzg2l_adc_reset_assert, adc->presetn);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to register presetn assert devm action, %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = rzg2l_adc_hw_init(adc);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to initialize ADC HW, %d\n", ret);
+		return ret;
+	}
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ret = devm_request_irq(dev, irq, rzg2l_adc_isr,
+			       0, dev_name(dev), adc);
+	if (ret < 0)
+		return ret;
+
+	init_completion(&adc->completion);
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	indio_dev->name = DRIVER_NAME;
+	indio_dev->info = &rzg2l_adc_iio_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adc->data->channels;
+	indio_dev->num_channels = adc->data->num_channels;
+
+	pm_runtime_set_suspended(dev);
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rzg2l_adc_pm_runtime_set_suspended, &indio_dev->dev);
+	if (ret)
+		return ret;
+
+	pm_runtime_enable(dev);
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       rzg2l_adc_pm_runtime_disable, &indio_dev->dev);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id rzg2l_adc_match[] = {
+	{ .compatible = "renesas,rzg2l-adc",},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, rzg2l_adc_match);
+
+static int __maybe_unused rzg2l_adc_pm_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct rzg2l_adc *adc = iio_priv(indio_dev);
+
+	rzg2l_adc_pwr(adc, false);
+	clk_disable_unprepare(adc->adclk);
+	clk_disable_unprepare(adc->pclk);
+
+	return 0;
+}
+
+static int __maybe_unused rzg2l_adc_pm_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct rzg2l_adc *adc = iio_priv(indio_dev);
+	int ret;
+
+	ret = clk_prepare_enable(adc->pclk);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(adc->adclk);
+	if (ret) {
+		clk_disable_unprepare(adc->pclk);
+		return ret;
+	}
+
+	rzg2l_adc_pwr(adc, true);
+
+	return 0;
+}
+
+static const struct dev_pm_ops rzg2l_adc_pm_ops = {
+	SET_RUNTIME_PM_OPS(rzg2l_adc_pm_runtime_suspend,
+			   rzg2l_adc_pm_runtime_resume,
+			   NULL)
+};
+
+static struct platform_driver rzg2l_adc_driver = {
+	.probe		= rzg2l_adc_probe,
+	.driver		= {
+		.name		= DRIVER_NAME,
+		.of_match_table = rzg2l_adc_match,
+		.pm		= &rzg2l_adc_pm_ops,
+	},
+};
+
+module_platform_driver(rzg2l_adc_driver);
+
+MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>");
+MODULE_DESCRIPTION("Renesas RZ/G2L ADC driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/sc27xx_adc.c b/drivers/iio/adc/sc27xx_adc.c
index 66b387f9b36d..f8421cbba8fa 100644
--- a/drivers/iio/adc/sc27xx_adc.c
+++ b/drivers/iio/adc/sc27xx_adc.c
@@ -9,12 +9,16 @@
 #include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 
 /* PMIC global registers definition */
-#define SC27XX_MODULE_EN		0xc08
+#define SC2730_MODULE_EN		0x1808
+#define SC2731_MODULE_EN		0xc08
 #define SC27XX_MODULE_ADC_EN		BIT(5)
-#define SC27XX_ARM_CLK_EN		0xc10
+#define SC2721_ARM_CLK_EN		0xc0c
+#define SC2730_ARM_CLK_EN		0x180c
+#define SC2731_ARM_CLK_EN		0xc10
 #define SC27XX_CLK_ADC_EN		BIT(5)
 #define SC27XX_CLK_ADC_CLK_EN		BIT(6)
 
@@ -36,8 +40,10 @@
 
 /* Bits and mask definition for SC27XX_ADC_CH_CFG register */
 #define SC27XX_ADC_CHN_ID_MASK		GENMASK(4, 0)
-#define SC27XX_ADC_SCALE_MASK		GENMASK(10, 8)
-#define SC27XX_ADC_SCALE_SHIFT		8
+#define SC27XX_ADC_SCALE_MASK		GENMASK(10, 9)
+#define SC2721_ADC_SCALE_MASK		BIT(5)
+#define SC27XX_ADC_SCALE_SHIFT		9
+#define SC2721_ADC_SCALE_SHIFT		5
 
 /* Bits definitions for SC27XX_ADC_INT_EN registers */
 #define SC27XX_ADC_IRQ_EN		BIT(0)
@@ -67,8 +73,15 @@
 #define SC27XX_RATIO_NUMERATOR_OFFSET	16
 #define SC27XX_RATIO_DENOMINATOR_MASK	GENMASK(15, 0)
 
+/* ADC specific channel reference voltage 3.5V */
+#define SC27XX_ADC_REFVOL_VDD35		3500000
+
+/* ADC default channel reference voltage is 2.8V */
+#define SC27XX_ADC_REFVOL_VDD28		2800000
+
 struct sc27xx_adc_data {
 	struct device *dev;
+	struct regulator *volref;
 	struct regmap *regmap;
 	/*
 	 * One hardware spinlock to synchronize between the multiple
@@ -78,6 +91,24 @@ struct sc27xx_adc_data {
 	int channel_scale[SC27XX_ADC_CHANNEL_MAX];
 	u32 base;
 	int irq;
+	const struct sc27xx_adc_variant_data *var_data;
+};
+
+/*
+ * Since different PMICs of SC27xx series can have different
+ * address and ratio, we should save ratio config and base
+ * in the device data structure.
+ */
+struct sc27xx_adc_variant_data {
+	u32 module_en;
+	u32 clk_en;
+	u32 scale_shift;
+	u32 scale_mask;
+	const struct sc27xx_adc_linear_graph *bscale_cal;
+	const struct sc27xx_adc_linear_graph *sscale_cal;
+	void (*init_scale)(struct sc27xx_adc_data *data);
+	int (*get_ratio)(int channel, int scale);
+	bool set_volref;
 };
 
 struct sc27xx_adc_linear_graph {
@@ -103,6 +134,16 @@ static struct sc27xx_adc_linear_graph small_scale_graph = {
 	100, 341,
 };
 
+static const struct sc27xx_adc_linear_graph sc2731_big_scale_graph_calib = {
+	4200, 850,
+	3600, 728,
+};
+
+static const struct sc27xx_adc_linear_graph sc2731_small_scale_graph_calib = {
+	1000, 838,
+	100, 84,
+};
+
 static const struct sc27xx_adc_linear_graph big_scale_graph_calib = {
 	4200, 856,
 	3600, 733,
@@ -118,49 +159,225 @@ static int sc27xx_adc_get_calib_data(u32 calib_data, int calib_adc)
 	return ((calib_data & 0xff) + calib_adc - 128) * 4;
 }
 
+/* get the adc nvmem cell calibration data */
+static int adc_nvmem_cell_calib_data(struct sc27xx_adc_data *data, const char *cell_name)
+{
+	struct nvmem_cell *cell;
+	void *buf;
+	u32 origin_calib_data = 0;
+	size_t len;
+
+	if (!data)
+		return -EINVAL;
+
+	cell = nvmem_cell_get(data->dev, cell_name);
+	if (IS_ERR(cell))
+		return PTR_ERR(cell);
+
+	buf = nvmem_cell_read(cell, &len);
+	if (IS_ERR(buf)) {
+		nvmem_cell_put(cell);
+		return PTR_ERR(buf);
+	}
+
+	memcpy(&origin_calib_data, buf, min(len, sizeof(u32)));
+
+	kfree(buf);
+	nvmem_cell_put(cell);
+	return origin_calib_data;
+}
+
 static int sc27xx_adc_scale_calibration(struct sc27xx_adc_data *data,
 					bool big_scale)
 {
 	const struct sc27xx_adc_linear_graph *calib_graph;
 	struct sc27xx_adc_linear_graph *graph;
-	struct nvmem_cell *cell;
 	const char *cell_name;
 	u32 calib_data = 0;
-	void *buf;
-	size_t len;
 
 	if (big_scale) {
-		calib_graph = &big_scale_graph_calib;
+		calib_graph = data->var_data->bscale_cal;
 		graph = &big_scale_graph;
 		cell_name = "big_scale_calib";
 	} else {
-		calib_graph = &small_scale_graph_calib;
+		calib_graph = data->var_data->sscale_cal;
 		graph = &small_scale_graph;
 		cell_name = "small_scale_calib";
 	}
 
-	cell = nvmem_cell_get(data->dev, cell_name);
-	if (IS_ERR(cell))
-		return PTR_ERR(cell);
-
-	buf = nvmem_cell_read(cell, &len);
-	nvmem_cell_put(cell);
-
-	if (IS_ERR(buf))
-		return PTR_ERR(buf);
-
-	memcpy(&calib_data, buf, min(len, sizeof(u32)));
+	calib_data = adc_nvmem_cell_calib_data(data, cell_name);
 
 	/* Only need to calibrate the adc values in the linear graph. */
 	graph->adc0 = sc27xx_adc_get_calib_data(calib_data, calib_graph->adc0);
 	graph->adc1 = sc27xx_adc_get_calib_data(calib_data >> 8,
 						calib_graph->adc1);
 
-	kfree(buf);
 	return 0;
 }
 
-static int sc27xx_adc_get_ratio(int channel, int scale)
+static int sc2720_adc_get_ratio(int channel, int scale)
+{
+	switch (channel) {
+	case 14:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(68, 900);
+		case 1:
+			return SC27XX_VOLT_RATIO(68, 1760);
+		case 2:
+			return SC27XX_VOLT_RATIO(68, 2327);
+		case 3:
+			return SC27XX_VOLT_RATIO(68, 3654);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 16:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(48, 100);
+		case 1:
+			return SC27XX_VOLT_RATIO(480, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(480, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(48, 406);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 21:
+	case 22:
+	case 23:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(3, 8);
+		case 1:
+			return SC27XX_VOLT_RATIO(375, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(375, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(300, 3248);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	default:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(1, 1);
+		case 1:
+			return SC27XX_VOLT_RATIO(1000, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(1000, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(100, 406);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	}
+	return SC27XX_VOLT_RATIO(1, 1);
+}
+
+static int sc2721_adc_get_ratio(int channel, int scale)
+{
+	switch (channel) {
+	case 1:
+	case 2:
+	case 3:
+	case 4:
+		return scale ? SC27XX_VOLT_RATIO(400, 1025) :
+			SC27XX_VOLT_RATIO(1, 1);
+	case 5:
+		return SC27XX_VOLT_RATIO(7, 29);
+	case 7:
+	case 9:
+		return scale ? SC27XX_VOLT_RATIO(100, 125) :
+			SC27XX_VOLT_RATIO(1, 1);
+	case 14:
+		return SC27XX_VOLT_RATIO(68, 900);
+	case 16:
+		return SC27XX_VOLT_RATIO(48, 100);
+	case 19:
+		return SC27XX_VOLT_RATIO(1, 3);
+	default:
+		return SC27XX_VOLT_RATIO(1, 1);
+	}
+	return SC27XX_VOLT_RATIO(1, 1);
+}
+
+static int sc2730_adc_get_ratio(int channel, int scale)
+{
+	switch (channel) {
+	case 14:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(68, 900);
+		case 1:
+			return SC27XX_VOLT_RATIO(68, 1760);
+		case 2:
+			return SC27XX_VOLT_RATIO(68, 2327);
+		case 3:
+			return SC27XX_VOLT_RATIO(68, 3654);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 15:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(1, 3);
+		case 1:
+			return SC27XX_VOLT_RATIO(1000, 5865);
+		case 2:
+			return SC27XX_VOLT_RATIO(500, 3879);
+		case 3:
+			return SC27XX_VOLT_RATIO(500, 6090);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 16:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(48, 100);
+		case 1:
+			return SC27XX_VOLT_RATIO(480, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(480, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(48, 406);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	case 21:
+	case 22:
+	case 23:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(3, 8);
+		case 1:
+			return SC27XX_VOLT_RATIO(375, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(375, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(300, 3248);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	default:
+		switch (scale) {
+		case 0:
+			return SC27XX_VOLT_RATIO(1, 1);
+		case 1:
+			return SC27XX_VOLT_RATIO(1000, 1955);
+		case 2:
+			return SC27XX_VOLT_RATIO(1000, 2586);
+		case 3:
+			return SC27XX_VOLT_RATIO(1000, 4060);
+		default:
+			return SC27XX_VOLT_RATIO(1, 1);
+		}
+	}
+	return SC27XX_VOLT_RATIO(1, 1);
+}
+
+static int sc2731_adc_get_ratio(int channel, int scale)
 {
 	switch (channel) {
 	case 1:
@@ -185,10 +402,87 @@ static int sc27xx_adc_get_ratio(int channel, int scale)
 	return SC27XX_VOLT_RATIO(1, 1);
 }
 
+/*
+ * According to the datasheet set specific value on some channel.
+ */
+static void sc2720_adc_scale_init(struct sc27xx_adc_data *data)
+{
+	int i;
+
+	for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
+		switch (i) {
+		case 5:
+			data->channel_scale[i] = 3;
+			break;
+		case 7:
+		case 9:
+			data->channel_scale[i] = 2;
+			break;
+		case 13:
+			data->channel_scale[i] = 1;
+			break;
+		case 19:
+		case 30:
+		case 31:
+			data->channel_scale[i] = 3;
+			break;
+		default:
+			data->channel_scale[i] = 0;
+			break;
+		}
+	}
+}
+
+static void sc2730_adc_scale_init(struct sc27xx_adc_data *data)
+{
+	int i;
+
+	for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
+		switch (i) {
+		case 5:
+		case 10:
+		case 19:
+		case 30:
+		case 31:
+			data->channel_scale[i] = 3;
+			break;
+		case 7:
+		case 9:
+			data->channel_scale[i] = 2;
+			break;
+		case 13:
+			data->channel_scale[i] = 1;
+			break;
+		default:
+			data->channel_scale[i] = 0;
+			break;
+		}
+	}
+}
+
+static void sc2731_adc_scale_init(struct sc27xx_adc_data *data)
+{
+	int i;
+	/*
+	 * In the current software design, SC2731 support 2 scales,
+	 * channels 5 uses big scale, others use smale.
+	 */
+	for (i = 0; i < SC27XX_ADC_CHANNEL_MAX; i++) {
+		switch (i) {
+		case 5:
+			data->channel_scale[i] = 1;
+			break;
+		default:
+			data->channel_scale[i] = 0;
+			break;
+		}
+	}
+}
+
 static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel,
 			   int scale, int *val)
 {
-	int ret;
+	int ret, ret_volref;
 	u32 tmp, value, status;
 
 	ret = hwspin_lock_timeout_raw(data->hwlock, SC27XX_ADC_HWLOCK_TIMEOUT);
@@ -197,10 +491,25 @@ static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel,
 		return ret;
 	}
 
+	/*
+	 * According to the sc2721 chip data sheet, the reference voltage of
+	 * specific channel 30 and channel 31 in ADC module needs to be set from
+	 * the default 2.8v to 3.5v.
+	 */
+	if ((data->var_data->set_volref) && (channel == 30 || channel == 31)) {
+		ret = regulator_set_voltage(data->volref,
+					SC27XX_ADC_REFVOL_VDD35,
+					SC27XX_ADC_REFVOL_VDD35);
+		if (ret) {
+			dev_err(data->dev, "failed to set the volref 3.5v\n");
+			goto unlock_adc;
+		}
+	}
+
 	ret = regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CTL,
 				 SC27XX_ADC_EN, SC27XX_ADC_EN);
 	if (ret)
-		goto unlock_adc;
+		goto regulator_restore;
 
 	ret = regmap_update_bits(data->regmap, data->base + SC27XX_ADC_INT_CLR,
 				 SC27XX_ADC_IRQ_CLR, SC27XX_ADC_IRQ_CLR);
@@ -208,10 +517,11 @@ static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel,
 		goto disable_adc;
 
 	/* Configure the channel id and scale */
-	tmp = (scale << SC27XX_ADC_SCALE_SHIFT) & SC27XX_ADC_SCALE_MASK;
+	tmp = (scale << data->var_data->scale_shift) & data->var_data->scale_mask;
 	tmp |= channel & SC27XX_ADC_CHN_ID_MASK;
 	ret = regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CH_CFG,
-				 SC27XX_ADC_CHN_ID_MASK | SC27XX_ADC_SCALE_MASK,
+				 SC27XX_ADC_CHN_ID_MASK |
+				 data->var_data->scale_mask,
 				 tmp);
 	if (ret)
 		goto disable_adc;
@@ -249,6 +559,17 @@ static int sc27xx_adc_read(struct sc27xx_adc_data *data, int channel,
 disable_adc:
 	regmap_update_bits(data->regmap, data->base + SC27XX_ADC_CTL,
 			   SC27XX_ADC_EN, 0);
+regulator_restore:
+	if ((data->var_data->set_volref) && (channel == 30 || channel == 31)) {
+		ret_volref = regulator_set_voltage(data->volref,
+					    SC27XX_ADC_REFVOL_VDD28,
+					    SC27XX_ADC_REFVOL_VDD28);
+		if (ret_volref) {
+			dev_err(data->dev, "failed to set the volref 2.8v,ret_volref = 0x%x\n",
+					 ret_volref);
+			ret = ret || ret_volref;
+		}
+	}
 unlock_adc:
 	hwspin_unlock_raw(data->hwlock);
 
@@ -258,17 +579,17 @@ unlock_adc:
 	return ret;
 }
 
-static void sc27xx_adc_volt_ratio(struct sc27xx_adc_data *data,
-				  int channel, int scale,
-				  u32 *div_numerator, u32 *div_denominator)
+static void sc27xx_adc_volt_ratio(struct sc27xx_adc_data *data, int channel, int scale,
+				  struct u32_fract *fract)
 {
-	u32 ratio = sc27xx_adc_get_ratio(channel, scale);
+	u32 ratio;
 
-	*div_numerator = ratio >> SC27XX_RATIO_NUMERATOR_OFFSET;
-	*div_denominator = ratio & SC27XX_RATIO_DENOMINATOR_MASK;
+	ratio = data->var_data->get_ratio(channel, scale);
+	fract->numerator = ratio >> SC27XX_RATIO_NUMERATOR_OFFSET;
+	fract->denominator = ratio & SC27XX_RATIO_DENOMINATOR_MASK;
 }
 
-static int sc27xx_adc_to_volt(struct sc27xx_adc_linear_graph *graph,
+static int adc_to_volt(struct sc27xx_adc_linear_graph *graph,
 			      int raw_adc)
 {
 	int tmp;
@@ -277,13 +598,23 @@ static int sc27xx_adc_to_volt(struct sc27xx_adc_linear_graph *graph,
 	tmp /= (graph->adc0 - graph->adc1);
 	tmp += graph->volt1;
 
+	return tmp;
+}
+
+static int sc27xx_adc_to_volt(struct sc27xx_adc_linear_graph *graph,
+			      int raw_adc)
+{
+	int tmp;
+
+	tmp = adc_to_volt(graph, raw_adc);
+
 	return tmp < 0 ? 0 : tmp;
 }
 
 static int sc27xx_adc_convert_volt(struct sc27xx_adc_data *data, int channel,
 				   int scale, int raw_adc)
 {
-	u32 numerator, denominator;
+	struct u32_fract fract;
 	u32 volt;
 
 	/*
@@ -305,9 +636,9 @@ static int sc27xx_adc_convert_volt(struct sc27xx_adc_data *data, int channel,
 		break;
 	}
 
-	sc27xx_adc_volt_ratio(data, channel, scale, &numerator, &denominator);
+	sc27xx_adc_volt_ratio(data, channel, scale, &fract);
 
-	return (volt * denominator + numerator / 2) / numerator;
+	return DIV_ROUND_CLOSEST(volt * fract.denominator, fract.numerator);
 }
 
 static int sc27xx_adc_read_processed(struct sc27xx_adc_data *data,
@@ -432,13 +763,13 @@ static int sc27xx_adc_enable(struct sc27xx_adc_data *data)
 {
 	int ret;
 
-	ret = regmap_update_bits(data->regmap, SC27XX_MODULE_EN,
+	ret = regmap_update_bits(data->regmap, data->var_data->module_en,
 				 SC27XX_MODULE_ADC_EN, SC27XX_MODULE_ADC_EN);
 	if (ret)
 		return ret;
 
 	/* Enable ADC work clock and controller clock */
-	ret = regmap_update_bits(data->regmap, SC27XX_ARM_CLK_EN,
+	ret = regmap_update_bits(data->regmap, data->var_data->clk_en,
 				 SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN,
 				 SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN);
 	if (ret)
@@ -456,10 +787,10 @@ static int sc27xx_adc_enable(struct sc27xx_adc_data *data)
 	return 0;
 
 disable_clk:
-	regmap_update_bits(data->regmap, SC27XX_ARM_CLK_EN,
+	regmap_update_bits(data->regmap, data->var_data->clk_en,
 			   SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN, 0);
 disable_adc:
-	regmap_update_bits(data->regmap, SC27XX_MODULE_EN,
+	regmap_update_bits(data->regmap, data->var_data->module_en,
 			   SC27XX_MODULE_ADC_EN, 0);
 
 	return ret;
@@ -470,21 +801,76 @@ static void sc27xx_adc_disable(void *_data)
 	struct sc27xx_adc_data *data = _data;
 
 	/* Disable ADC work clock and controller clock */
-	regmap_update_bits(data->regmap, SC27XX_ARM_CLK_EN,
+	regmap_update_bits(data->regmap, data->var_data->clk_en,
 			   SC27XX_CLK_ADC_EN | SC27XX_CLK_ADC_CLK_EN, 0);
 
-	regmap_update_bits(data->regmap, SC27XX_MODULE_EN,
+	regmap_update_bits(data->regmap, data->var_data->module_en,
 			   SC27XX_MODULE_ADC_EN, 0);
 }
 
+static const struct sc27xx_adc_variant_data sc2731_data = {
+	.module_en = SC2731_MODULE_EN,
+	.clk_en = SC2731_ARM_CLK_EN,
+	.scale_shift = SC27XX_ADC_SCALE_SHIFT,
+	.scale_mask = SC27XX_ADC_SCALE_MASK,
+	.bscale_cal = &sc2731_big_scale_graph_calib,
+	.sscale_cal = &sc2731_small_scale_graph_calib,
+	.init_scale = sc2731_adc_scale_init,
+	.get_ratio = sc2731_adc_get_ratio,
+	.set_volref = false,
+};
+
+static const struct sc27xx_adc_variant_data sc2730_data = {
+	.module_en = SC2730_MODULE_EN,
+	.clk_en = SC2730_ARM_CLK_EN,
+	.scale_shift = SC27XX_ADC_SCALE_SHIFT,
+	.scale_mask = SC27XX_ADC_SCALE_MASK,
+	.bscale_cal = &big_scale_graph_calib,
+	.sscale_cal = &small_scale_graph_calib,
+	.init_scale = sc2730_adc_scale_init,
+	.get_ratio = sc2730_adc_get_ratio,
+	.set_volref = false,
+};
+
+static const struct sc27xx_adc_variant_data sc2721_data = {
+	.module_en = SC2731_MODULE_EN,
+	.clk_en = SC2721_ARM_CLK_EN,
+	.scale_shift = SC2721_ADC_SCALE_SHIFT,
+	.scale_mask = SC2721_ADC_SCALE_MASK,
+	.bscale_cal = &sc2731_big_scale_graph_calib,
+	.sscale_cal = &sc2731_small_scale_graph_calib,
+	.init_scale = sc2731_adc_scale_init,
+	.get_ratio = sc2721_adc_get_ratio,
+	.set_volref = true,
+};
+
+static const struct sc27xx_adc_variant_data sc2720_data = {
+	.module_en = SC2731_MODULE_EN,
+	.clk_en = SC2721_ARM_CLK_EN,
+	.scale_shift = SC27XX_ADC_SCALE_SHIFT,
+	.scale_mask = SC27XX_ADC_SCALE_MASK,
+	.bscale_cal = &big_scale_graph_calib,
+	.sscale_cal = &small_scale_graph_calib,
+	.init_scale = sc2720_adc_scale_init,
+	.get_ratio = sc2720_adc_get_ratio,
+	.set_volref = false,
+};
+
 static int sc27xx_adc_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
 	struct device_node *np = dev->of_node;
 	struct sc27xx_adc_data *sc27xx_data;
+	const struct sc27xx_adc_variant_data *pdata;
 	struct iio_dev *indio_dev;
 	int ret;
 
+	pdata = of_device_get_match_data(dev);
+	if (!pdata) {
+		dev_err(dev, "No matching driver data found\n");
+		return -EINVAL;
+	}
+
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*sc27xx_data));
 	if (!indio_dev)
 		return -ENOMEM;
@@ -520,6 +906,16 @@ static int sc27xx_adc_probe(struct platform_device *pdev)
 	}
 
 	sc27xx_data->dev = dev;
+	if (pdata->set_volref) {
+		sc27xx_data->volref = devm_regulator_get(dev, "vref");
+		if (IS_ERR(sc27xx_data->volref)) {
+			ret = PTR_ERR(sc27xx_data->volref);
+			return dev_err_probe(dev, ret, "failed to get ADC volref\n");
+		}
+	}
+
+	sc27xx_data->var_data = pdata;
+	sc27xx_data->var_data->init_scale(sc27xx_data);
 
 	ret = sc27xx_adc_enable(sc27xx_data);
 	if (ret) {
@@ -533,7 +929,6 @@ static int sc27xx_adc_probe(struct platform_device *pdev)
 		return ret;
 	}
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = dev_name(dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &sc27xx_info;
@@ -547,9 +942,13 @@ static int sc27xx_adc_probe(struct platform_device *pdev)
 }
 
 static const struct of_device_id sc27xx_adc_of_match[] = {
-	{ .compatible = "sprd,sc2731-adc", },
+	{ .compatible = "sprd,sc2731-adc", .data = &sc2731_data},
+	{ .compatible = "sprd,sc2730-adc", .data = &sc2730_data},
+	{ .compatible = "sprd,sc2721-adc", .data = &sc2721_data},
+	{ .compatible = "sprd,sc2720-adc", .data = &sc2720_data},
 	{ }
 };
+MODULE_DEVICE_TABLE(of, sc27xx_adc_of_match);
 
 static struct platform_driver sc27xx_adc_driver = {
 	.probe = sc27xx_adc_probe,
diff --git a/drivers/iio/adc/sd_adc_modulator.c b/drivers/iio/adc/sd_adc_modulator.c
index 560d8c7d9d86..327cc2097f6c 100644
--- a/drivers/iio/adc/sd_adc_modulator.c
+++ b/drivers/iio/adc/sd_adc_modulator.c
@@ -9,7 +9,8 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/platform_device.h>
 
 static const struct iio_info iio_sd_mod_iio_info;
 
@@ -32,8 +33,6 @@ static int iio_sd_mod_probe(struct platform_device *pdev)
 	if (!iio)
 		return -ENOMEM;
 
-	iio->dev.parent = dev;
-	iio->dev.of_node = dev->of_node;
 	iio->name = dev_name(dev);
 	iio->info = &iio_sd_mod_iio_info;
 	iio->modes = INDIO_BUFFER_HARDWARE;
@@ -56,7 +55,7 @@ MODULE_DEVICE_TABLE(of, sd_adc_of_match);
 static struct platform_driver iio_sd_mod_adc = {
 	.driver = {
 		.name = "iio_sd_adc_mod",
-		.of_match_table = of_match_ptr(sd_adc_of_match),
+		.of_match_table = sd_adc_of_match,
 	},
 	.probe = iio_sd_mod_probe,
 };
diff --git a/drivers/iio/adc/spear_adc.c b/drivers/iio/adc/spear_adc.c
index 0ad536494e8f..d93e580b3dc5 100644
--- a/drivers/iio/adc/spear_adc.c
+++ b/drivers/iio/adc/spear_adc.c
@@ -75,6 +75,15 @@ struct spear_adc_state {
 	struct adc_regs_spear6xx __iomem *adc_base_spear6xx;
 	struct clk *clk;
 	struct completion completion;
+	/*
+	 * Lock to protect the device state during a potential concurrent
+	 * read access from userspace. Reading a raw value requires a sequence
+	 * of register writes, then a wait for a completion callback,
+	 * and finally a register read, during which userspace could issue
+	 * another read request. This lock protects a read access from
+	 * ocurring before another one has finished.
+	 */
+	struct mutex lock;
 	u32 current_clk;
 	u32 sampling_freq;
 	u32 avg_samples;
@@ -146,7 +155,7 @@ static int spear_adc_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&st->lock);
 
 		status = SPEAR_ADC_STATUS_CHANNEL_NUM(chan->channel) |
 			SPEAR_ADC_STATUS_AVG_SAMPLE(st->avg_samples) |
@@ -159,7 +168,7 @@ static int spear_adc_read_raw(struct iio_dev *indio_dev,
 		wait_for_completion(&st->completion); /* set by ISR */
 		*val = st->value;
 
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&st->lock);
 
 		return IIO_VAL_INT;
 
@@ -187,7 +196,7 @@ static int spear_adc_write_raw(struct iio_dev *indio_dev,
 	if (mask != IIO_CHAN_INFO_SAMP_FREQ)
 		return -EINVAL;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	if ((val < SPEAR_ADC_CLK_MIN) ||
 	    (val > SPEAR_ADC_CLK_MAX) ||
@@ -199,7 +208,7 @@ static int spear_adc_write_raw(struct iio_dev *indio_dev,
 	spear_adc_set_clk(st, val);
 
 out:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 	return ret;
 }
 
@@ -271,6 +280,9 @@ static int spear_adc_probe(struct platform_device *pdev)
 	}
 
 	st = iio_priv(indio_dev);
+
+	mutex_init(&st->lock);
+
 	st->np = np;
 
 	/*
@@ -336,7 +348,6 @@ static int spear_adc_probe(struct platform_device *pdev)
 	init_completion(&st->completion);
 
 	indio_dev->name = SPEAR_ADC_MOD_NAME;
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &spear_adc_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = spear_adc_iio_channels;
diff --git a/drivers/iio/adc/stm32-adc-core.c b/drivers/iio/adc/stm32-adc-core.c
index 2df88d2b880a..81d5db91c67b 100644
--- a/drivers/iio/adc/stm32-adc-core.c
+++ b/drivers/iio/adc/stm32-adc-core.c
@@ -9,6 +9,7 @@
  *
  */
 
+#include <linux/bitfield.h>
 #include <linux/clk.h>
 #include <linux/interrupt.h>
 #include <linux/irqchip/chained_irq.h>
@@ -41,18 +42,16 @@
  * struct stm32_adc_common_regs - stm32 common registers
  * @csr:	common status register offset
  * @ccr:	common control register offset
- * @eoc1_msk:	adc1 end of conversion flag in @csr
- * @eoc2_msk:	adc2 end of conversion flag in @csr
- * @eoc3_msk:	adc3 end of conversion flag in @csr
+ * @eoc_msk:    array of eoc (end of conversion flag) masks in csr for adc1..n
+ * @ovr_msk:    array of ovr (overrun flag) masks in csr for adc1..n
  * @ier:	interrupt enable register offset for each adc
  * @eocie_msk:	end of conversion interrupt enable mask in @ier
  */
 struct stm32_adc_common_regs {
 	u32 csr;
 	u32 ccr;
-	u32 eoc1_msk;
-	u32 eoc2_msk;
-	u32 eoc3_msk;
+	u32 eoc_msk[STM32_ADC_MAX_ADCS];
+	u32 ovr_msk[STM32_ADC_MAX_ADCS];
 	u32 ier;
 	u32 eocie_msk;
 };
@@ -64,18 +63,25 @@ struct stm32_adc_priv;
  * @regs:	common registers for all instances
  * @clk_sel:	clock selection routine
  * @max_clk_rate_hz: maximum analog clock rate (Hz, from datasheet)
+ * @ipid:	adc identification number
  * @has_syscfg: SYSCFG capability flags
+ * @num_irqs:	number of interrupt lines
+ * @num_adcs:   maximum number of ADC instances in the common registers
  */
 struct stm32_adc_priv_cfg {
 	const struct stm32_adc_common_regs *regs;
 	int (*clk_sel)(struct platform_device *, struct stm32_adc_priv *);
 	u32 max_clk_rate_hz;
+	u32 ipid;
 	unsigned int has_syscfg;
+	unsigned int num_irqs;
+	unsigned int num_adcs;
 };
 
 /**
  * struct stm32_adc_priv - stm32 ADC core private data
  * @irq:		irq(s) for ADC block
+ * @nb_adc_max:		actual maximum number of instance per ADC block
  * @domain:		irq domain reference
  * @aclk:		clock reference for the analog circuitry
  * @bclk:		bus clock common for all ADCs, depends on part used
@@ -93,6 +99,7 @@ struct stm32_adc_priv_cfg {
  */
 struct stm32_adc_priv {
 	int				irq[STM32_ADC_MAX_ADCS];
+	unsigned int			nb_adc_max;
 	struct irq_domain		*domain;
 	struct clk			*aclk;
 	struct clk			*bclk;
@@ -200,7 +207,7 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev,
 {
 	u32 ckmode, presc, val;
 	unsigned long rate;
-	int i, div;
+	int i, div, duty;
 
 	/* stm32h7 bus clock is common for all ADC instances (mandatory) */
 	if (!priv->bclk) {
@@ -224,6 +231,11 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev,
 			return -EINVAL;
 		}
 
+		/* If duty is an error, kindly use at least /2 divider */
+		duty = clk_get_scaled_duty_cycle(priv->aclk, 100);
+		if (duty < 0)
+			dev_warn(&pdev->dev, "adc clock duty: %d\n", duty);
+
 		for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) {
 			ckmode = stm32h7_adc_ckmodes_spec[i].ckmode;
 			presc = stm32h7_adc_ckmodes_spec[i].presc;
@@ -232,6 +244,13 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev,
 			if (ckmode)
 				continue;
 
+			/*
+			 * For proper operation, clock duty cycle range is 49%
+			 * to 51%. Apply at least /2 prescaler otherwise.
+			 */
+			if (div == 1 && (duty < 49 || duty > 51))
+				continue;
+
 			if ((rate / div) <= priv->max_clk_rate)
 				goto out;
 		}
@@ -244,6 +263,10 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev,
 		return -EINVAL;
 	}
 
+	duty = clk_get_scaled_duty_cycle(priv->bclk, 100);
+	if (duty < 0)
+		dev_warn(&pdev->dev, "bus clock duty: %d\n", duty);
+
 	for (i = 0; i < ARRAY_SIZE(stm32h7_adc_ckmodes_spec); i++) {
 		ckmode = stm32h7_adc_ckmodes_spec[i].ckmode;
 		presc = stm32h7_adc_ckmodes_spec[i].presc;
@@ -252,6 +275,9 @@ static int stm32h7_adc_clk_sel(struct platform_device *pdev,
 		if (!ckmode)
 			continue;
 
+		if (div == 1 && (duty < 49 || duty > 51))
+			continue;
+
 		if ((rate / div) <= priv->max_clk_rate)
 			goto out;
 	}
@@ -280,21 +306,20 @@ out:
 static const struct stm32_adc_common_regs stm32f4_adc_common_regs = {
 	.csr = STM32F4_ADC_CSR,
 	.ccr = STM32F4_ADC_CCR,
-	.eoc1_msk = STM32F4_EOC1 | STM32F4_OVR1,
-	.eoc2_msk = STM32F4_EOC2 | STM32F4_OVR2,
-	.eoc3_msk = STM32F4_EOC3 | STM32F4_OVR3,
+	.eoc_msk = { STM32F4_EOC1, STM32F4_EOC2, STM32F4_EOC3},
+	.ovr_msk = { STM32F4_OVR1, STM32F4_OVR2, STM32F4_OVR3},
 	.ier = STM32F4_ADC_CR1,
-	.eocie_msk = STM32F4_EOCIE | STM32F4_OVRIE,
+	.eocie_msk = STM32F4_EOCIE,
 };
 
 /* STM32H7 common registers definitions */
 static const struct stm32_adc_common_regs stm32h7_adc_common_regs = {
 	.csr = STM32H7_ADC_CSR,
 	.ccr = STM32H7_ADC_CCR,
-	.eoc1_msk = STM32H7_EOC_MST | STM32H7_OVR_MST,
-	.eoc2_msk = STM32H7_EOC_SLV | STM32H7_OVR_SLV,
+	.eoc_msk = { STM32H7_EOC_MST, STM32H7_EOC_SLV},
+	.ovr_msk = { STM32H7_OVR_MST, STM32H7_OVR_SLV},
 	.ier = STM32H7_ADC_IER,
-	.eocie_msk = STM32H7_EOCIE | STM32H7_OVRIE,
+	.eocie_msk = STM32H7_EOCIE,
 };
 
 static const unsigned int stm32_adc_offset[STM32_ADC_MAX_ADCS] = {
@@ -316,6 +341,7 @@ static void stm32_adc_irq_handler(struct irq_desc *desc)
 {
 	struct stm32_adc_priv *priv = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
+	int i;
 	u32 status;
 
 	chained_irq_enter(chip, desc);
@@ -333,17 +359,12 @@ static void stm32_adc_irq_handler(struct irq_desc *desc)
 	 * before invoking the interrupt handler (e.g. call ISR only for
 	 * IRQ-enabled ADCs).
 	 */
-	if (status & priv->cfg->regs->eoc1_msk &&
-	    stm32_adc_eoc_enabled(priv, 0))
-		generic_handle_irq(irq_find_mapping(priv->domain, 0));
-
-	if (status & priv->cfg->regs->eoc2_msk &&
-	    stm32_adc_eoc_enabled(priv, 1))
-		generic_handle_irq(irq_find_mapping(priv->domain, 1));
-
-	if (status & priv->cfg->regs->eoc3_msk &&
-	    stm32_adc_eoc_enabled(priv, 2))
-		generic_handle_irq(irq_find_mapping(priv->domain, 2));
+	for (i = 0; i < priv->nb_adc_max; i++) {
+		if ((status & priv->cfg->regs->eoc_msk[i] &&
+		     stm32_adc_eoc_enabled(priv, i)) ||
+		     (status & priv->cfg->regs->ovr_msk[i]))
+			generic_handle_domain_irq(priv->domain, i);
+	}
 
 	chained_irq_exit(chip, desc);
 };
@@ -375,21 +396,15 @@ static int stm32_adc_irq_probe(struct platform_device *pdev,
 	struct device_node *np = pdev->dev.of_node;
 	unsigned int i;
 
-	for (i = 0; i < STM32_ADC_MAX_ADCS; i++) {
+	/*
+	 * Interrupt(s) must be provided, depending on the compatible:
+	 * - stm32f4/h7 shares a common interrupt line.
+	 * - stm32mp1, has one line per ADC
+	 */
+	for (i = 0; i < priv->cfg->num_irqs; i++) {
 		priv->irq[i] = platform_get_irq(pdev, i);
-		if (priv->irq[i] < 0) {
-			/*
-			 * At least one interrupt must be provided, make others
-			 * optional:
-			 * - stm32f4/h7 shares a common interrupt.
-			 * - stm32mp1, has one line per ADC (either for ADC1,
-			 *   ADC2 or both).
-			 */
-			if (i && priv->irq[i] == -ENXIO)
-				continue;
-
+		if (priv->irq[i] < 0)
 			return priv->irq[i];
-		}
 	}
 
 	priv->domain = irq_domain_add_simple(np, STM32_ADC_MAX_ADCS, 0,
@@ -400,9 +415,7 @@ static int stm32_adc_irq_probe(struct platform_device *pdev,
 		return -ENOMEM;
 	}
 
-	for (i = 0; i < STM32_ADC_MAX_ADCS; i++) {
-		if (priv->irq[i] < 0)
-			continue;
+	for (i = 0; i < priv->cfg->num_irqs; i++) {
 		irq_set_chained_handler(priv->irq[i], stm32_adc_irq_handler);
 		irq_set_handler_data(priv->irq[i], priv);
 	}
@@ -416,15 +429,12 @@ static void stm32_adc_irq_remove(struct platform_device *pdev,
 	int hwirq;
 	unsigned int i;
 
-	for (hwirq = 0; hwirq < STM32_ADC_MAX_ADCS; hwirq++)
+	for (hwirq = 0; hwirq < priv->nb_adc_max; hwirq++)
 		irq_dispose_mapping(irq_find_mapping(priv->domain, hwirq));
 	irq_domain_remove(priv->domain);
 
-	for (i = 0; i < STM32_ADC_MAX_ADCS; i++) {
-		if (priv->irq[i] < 0)
-			continue;
+	for (i = 0; i < priv->cfg->num_irqs; i++)
 		irq_set_chained_handler(priv->irq[i], NULL);
-	}
 }
 
 static int stm32_adc_core_switches_supply_en(struct stm32_adc_priv *priv,
@@ -532,20 +542,16 @@ static int stm32_adc_core_hw_start(struct device *dev)
 		goto err_switches_dis;
 	}
 
-	if (priv->bclk) {
-		ret = clk_prepare_enable(priv->bclk);
-		if (ret < 0) {
-			dev_err(dev, "bus clk enable failed\n");
-			goto err_regulator_disable;
-		}
+	ret = clk_prepare_enable(priv->bclk);
+	if (ret < 0) {
+		dev_err(dev, "bus clk enable failed\n");
+		goto err_regulator_disable;
 	}
 
-	if (priv->aclk) {
-		ret = clk_prepare_enable(priv->aclk);
-		if (ret < 0) {
-			dev_err(dev, "adc clk enable failed\n");
-			goto err_bclk_disable;
-		}
+	ret = clk_prepare_enable(priv->aclk);
+	if (ret < 0) {
+		dev_err(dev, "adc clk enable failed\n");
+		goto err_bclk_disable;
 	}
 
 	writel_relaxed(priv->ccr_bak, priv->common.base + priv->cfg->regs->ccr);
@@ -553,8 +559,7 @@ static int stm32_adc_core_hw_start(struct device *dev)
 	return 0;
 
 err_bclk_disable:
-	if (priv->bclk)
-		clk_disable_unprepare(priv->bclk);
+	clk_disable_unprepare(priv->bclk);
 err_regulator_disable:
 	regulator_disable(priv->vref);
 err_switches_dis:
@@ -572,10 +577,8 @@ static void stm32_adc_core_hw_stop(struct device *dev)
 
 	/* Backup CCR that may be lost (depends on power state to achieve) */
 	priv->ccr_bak = readl_relaxed(priv->common.base + priv->cfg->regs->ccr);
-	if (priv->aclk)
-		clk_disable_unprepare(priv->aclk);
-	if (priv->bclk)
-		clk_disable_unprepare(priv->bclk);
+	clk_disable_unprepare(priv->aclk);
+	clk_disable_unprepare(priv->bclk);
 	regulator_disable(priv->vref);
 	stm32_adc_core_switches_supply_dis(priv);
 	regulator_disable(priv->vdda);
@@ -591,11 +594,9 @@ static int stm32_adc_core_switches_probe(struct device *dev,
 	priv->syscfg = syscon_regmap_lookup_by_phandle(np, "st,syscfg");
 	if (IS_ERR(priv->syscfg)) {
 		ret = PTR_ERR(priv->syscfg);
-		if (ret != -ENODEV) {
-			if (ret != -EPROBE_DEFER)
-				dev_err(dev, "Can't probe syscfg: %d\n", ret);
-			return ret;
-		}
+		if (ret != -ENODEV)
+			return dev_err_probe(dev, ret, "Can't probe syscfg\n");
+
 		priv->syscfg = NULL;
 	}
 
@@ -605,12 +606,9 @@ static int stm32_adc_core_switches_probe(struct device *dev,
 		priv->booster = devm_regulator_get_optional(dev, "booster");
 		if (IS_ERR(priv->booster)) {
 			ret = PTR_ERR(priv->booster);
-			if (ret != -ENODEV) {
-				if (ret != -EPROBE_DEFER)
-					dev_err(dev, "can't get booster %d\n",
-						ret);
-				return ret;
-			}
+			if (ret != -ENODEV)
+				return dev_err_probe(dev, ret, "can't get booster\n");
+
 			priv->booster = NULL;
 		}
 	}
@@ -621,11 +619,9 @@ static int stm32_adc_core_switches_probe(struct device *dev,
 		priv->vdd = devm_regulator_get_optional(dev, "vdd");
 		if (IS_ERR(priv->vdd)) {
 			ret = PTR_ERR(priv->vdd);
-			if (ret != -ENODEV) {
-				if (ret != -EPROBE_DEFER)
-					dev_err(dev, "can't get vdd %d\n", ret);
-				return ret;
-			}
+			if (ret != -ENODEV)
+				return dev_err_probe(dev, ret, "can't get vdd\n");
+
 			priv->vdd = NULL;
 		}
 	}
@@ -651,6 +647,49 @@ static int stm32_adc_core_switches_probe(struct device *dev,
 	return 0;
 }
 
+static int stm32_adc_probe_identification(struct platform_device *pdev,
+					  struct stm32_adc_priv *priv)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct device_node *child;
+	const char *compat;
+	int ret, count = 0;
+	u32 id, val;
+
+	if (!priv->cfg->ipid)
+		return 0;
+
+	id = FIELD_GET(STM32MP1_IPIDR_MASK,
+		       readl_relaxed(priv->common.base + STM32MP1_ADC_IPDR));
+	if (id != priv->cfg->ipid) {
+		dev_err(&pdev->dev, "Unexpected IP version: 0x%x", id);
+		return -EINVAL;
+	}
+
+	for_each_child_of_node(np, child) {
+		ret = of_property_read_string(child, "compatible", &compat);
+		if (ret)
+			continue;
+		/* Count child nodes with stm32 adc compatible */
+		if (strstr(compat, "st,stm32") && strstr(compat, "adc"))
+			count++;
+	}
+
+	val = readl_relaxed(priv->common.base + STM32MP1_ADC_HWCFGR0);
+	priv->nb_adc_max = FIELD_GET(STM32MP1_ADCNUM_MASK, val);
+	if (count > priv->nb_adc_max) {
+		dev_err(&pdev->dev, "Unexpected child number: %d", count);
+		return -EINVAL;
+	}
+
+	val = readl_relaxed(priv->common.base + STM32MP1_ADC_VERR);
+	dev_dbg(&pdev->dev, "ADC version: %lu.%lu\n",
+		FIELD_GET(STM32MP1_MAJREV_MASK, val),
+		FIELD_GET(STM32MP1_MINREV_MASK, val));
+
+	return 0;
+}
+
 static int stm32_adc_probe(struct platform_device *pdev)
 {
 	struct stm32_adc_priv *priv;
@@ -670,6 +709,8 @@ static int stm32_adc_probe(struct platform_device *pdev)
 
 	priv->cfg = (const struct stm32_adc_priv_cfg *)
 		of_match_device(dev->driver->of_match_table, dev)->data;
+	priv->nb_adc_max = priv->cfg->num_adcs;
+	spin_lock_init(&priv->common.lock);
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
 	priv->common.base = devm_ioremap_resource(&pdev->dev, res);
@@ -678,42 +719,24 @@ static int stm32_adc_probe(struct platform_device *pdev)
 	priv->common.phys_base = res->start;
 
 	priv->vdda = devm_regulator_get(&pdev->dev, "vdda");
-	if (IS_ERR(priv->vdda)) {
-		ret = PTR_ERR(priv->vdda);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "vdda get failed, %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(priv->vdda))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->vdda),
+				     "vdda get failed\n");
 
 	priv->vref = devm_regulator_get(&pdev->dev, "vref");
-	if (IS_ERR(priv->vref)) {
-		ret = PTR_ERR(priv->vref);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "vref get failed, %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(priv->vref))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->vref),
+				     "vref get failed\n");
 
-	priv->aclk = devm_clk_get(&pdev->dev, "adc");
-	if (IS_ERR(priv->aclk)) {
-		ret = PTR_ERR(priv->aclk);
-		if (ret != -ENOENT) {
-			if (ret != -EPROBE_DEFER)
-				dev_err(&pdev->dev, "Can't get 'adc' clock\n");
-			return ret;
-		}
-		priv->aclk = NULL;
-	}
+	priv->aclk = devm_clk_get_optional(&pdev->dev, "adc");
+	if (IS_ERR(priv->aclk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->aclk),
+				     "Can't get 'adc' clock\n");
 
-	priv->bclk = devm_clk_get(&pdev->dev, "bus");
-	if (IS_ERR(priv->bclk)) {
-		ret = PTR_ERR(priv->bclk);
-		if (ret != -ENOENT) {
-			if (ret != -EPROBE_DEFER)
-				dev_err(&pdev->dev, "Can't get 'bus' clock\n");
-			return ret;
-		}
-		priv->bclk = NULL;
-	}
+	priv->bclk = devm_clk_get_optional(&pdev->dev, "bus");
+	if (IS_ERR(priv->bclk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->bclk),
+				     "Can't get 'bus' clock\n");
 
 	ret = stm32_adc_core_switches_probe(dev, priv);
 	if (ret)
@@ -729,6 +752,10 @@ static int stm32_adc_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_pm_stop;
 
+	ret = stm32_adc_probe_identification(pdev, priv);
+	if (ret < 0)
+		goto err_hw_stop;
+
 	ret = regulator_get_voltage(priv->vref);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "vref get voltage failed, %d\n", ret);
@@ -791,7 +818,6 @@ static int stm32_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#if defined(CONFIG_PM)
 static int stm32_adc_core_runtime_suspend(struct device *dev)
 {
 	stm32_adc_core_hw_stop(dev);
@@ -803,20 +829,25 @@ static int stm32_adc_core_runtime_resume(struct device *dev)
 {
 	return stm32_adc_core_hw_start(dev);
 }
-#endif
-
-static const struct dev_pm_ops stm32_adc_core_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(stm32_adc_core_runtime_suspend,
-			   stm32_adc_core_runtime_resume,
-			   NULL)
-};
+
+static int stm32_adc_core_runtime_idle(struct device *dev)
+{
+	pm_runtime_mark_last_busy(dev);
+
+	return 0;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(stm32_adc_core_pm_ops,
+				stm32_adc_core_runtime_suspend,
+				stm32_adc_core_runtime_resume,
+				stm32_adc_core_runtime_idle);
 
 static const struct stm32_adc_priv_cfg stm32f4_adc_priv_cfg = {
 	.regs = &stm32f4_adc_common_regs,
 	.clk_sel = stm32f4_adc_clk_sel,
 	.max_clk_rate_hz = 36000000,
+	.num_irqs = 1,
+	.num_adcs = 3,
 };
 
 static const struct stm32_adc_priv_cfg stm32h7_adc_priv_cfg = {
@@ -824,13 +855,17 @@ static const struct stm32_adc_priv_cfg stm32h7_adc_priv_cfg = {
 	.clk_sel = stm32h7_adc_clk_sel,
 	.max_clk_rate_hz = 36000000,
 	.has_syscfg = HAS_VBOOSTER,
+	.num_irqs = 1,
+	.num_adcs = 2,
 };
 
 static const struct stm32_adc_priv_cfg stm32mp1_adc_priv_cfg = {
 	.regs = &stm32h7_adc_common_regs,
 	.clk_sel = stm32h7_adc_clk_sel,
-	.max_clk_rate_hz = 40000000,
+	.max_clk_rate_hz = 36000000,
 	.has_syscfg = HAS_VBOOSTER | HAS_ANASWVDD,
+	.ipid = STM32MP15_IPIDR_NUMBER,
+	.num_irqs = 2,
 };
 
 static const struct of_device_id stm32_adc_of_match[] = {
@@ -854,7 +889,7 @@ static struct platform_driver stm32_adc_driver = {
 	.driver = {
 		.name = "stm32-adc-core",
 		.of_match_table = stm32_adc_of_match,
-		.pm = &stm32_adc_core_pm_ops,
+		.pm = pm_ptr(&stm32_adc_core_pm_ops),
 	},
 };
 module_platform_driver(stm32_adc_driver);
diff --git a/drivers/iio/adc/stm32-adc-core.h b/drivers/iio/adc/stm32-adc-core.h
index 2322809bfd2f..2118ef63843d 100644
--- a/drivers/iio/adc/stm32-adc-core.h
+++ b/drivers/iio/adc/stm32-adc-core.h
@@ -24,6 +24,7 @@
  * | 0x300  |         Master & Slave common regs          |
  * --------------------------------------------------------
  */
+/* Maximum ADC instances number per ADC block for all supported SoCs */
 #define STM32_ADC_MAX_ADCS		3
 #define STM32_ADC_OFFSET		0x100
 #define STM32_ADCX_COMN_OFFSET		0x300
@@ -102,6 +103,15 @@
 #define STM32H7_ADC_CALFACT		0xC4
 #define STM32H7_ADC_CALFACT2		0xC8
 
+/* STM32MP1 - ADC2 instance option register */
+#define STM32MP1_ADC2_OR		0xD0
+
+/* STM32MP1 - Identification registers */
+#define STM32MP1_ADC_HWCFGR0		0x3F0
+#define STM32MP1_ADC_VERR		0x3F4
+#define STM32MP1_ADC_IPDR		0x3F8
+#define STM32MP1_ADC_SIDR		0x3FC
+
 /* STM32H7 - common registers for all ADC instances */
 #define STM32H7_ADC_CSR			(STM32_ADCX_COMN_OFFSET + 0x00)
 #define STM32H7_ADC_CCR			(STM32_ADCX_COMN_OFFSET + 0x08)
@@ -168,23 +178,54 @@ enum stm32h7_adc_dmngt {
 #define STM32H7_EOC_MST			BIT(2)
 
 /* STM32H7_ADC_CCR - bit fields */
+#define STM32H7_VBATEN			BIT(24)
+#define STM32H7_VREFEN			BIT(22)
 #define STM32H7_PRESC_SHIFT		18
 #define STM32H7_PRESC_MASK		GENMASK(21, 18)
 #define STM32H7_CKMODE_SHIFT		16
 #define STM32H7_CKMODE_MASK		GENMASK(17, 16)
 
+/* STM32MP1_ADC2_OR - bit fields */
+#define STM32MP1_VDDCOREEN		BIT(0)
+
+/* STM32MP1_ADC_HWCFGR0 - bit fields */
+#define STM32MP1_ADCNUM_SHIFT		0
+#define STM32MP1_ADCNUM_MASK		GENMASK(3, 0)
+#define STM32MP1_MULPIPE_SHIFT		4
+#define STM32MP1_MULPIPE_MASK		GENMASK(7, 4)
+#define STM32MP1_OPBITS_SHIFT		8
+#define STM32MP1_OPBITS_MASK		GENMASK(11, 8)
+#define STM32MP1_IDLEVALUE_SHIFT	12
+#define STM32MP1_IDLEVALUE_MASK	GENMASK(15, 12)
+
+/* STM32MP1_ADC_VERR - bit fields */
+#define STM32MP1_MINREV_SHIFT		0
+#define STM32MP1_MINREV_MASK		GENMASK(3, 0)
+#define STM32MP1_MAJREV_SHIFT		4
+#define STM32MP1_MAJREV_MASK		GENMASK(7, 4)
+
+/* STM32MP1_ADC_IPDR - bit fields */
+#define STM32MP1_IPIDR_MASK		GENMASK(31, 0)
+
+/* STM32MP1_ADC_SIDR - bit fields */
+#define STM32MP1_SIDR_MASK		GENMASK(31, 0)
+
+#define STM32MP15_IPIDR_NUMBER		0x00110005
+
 /**
  * struct stm32_adc_common - stm32 ADC driver common data (for all instances)
  * @base:		control registers base cpu addr
  * @phys_base:		control registers base physical addr
  * @rate:		clock rate used for analog circuitry
  * @vref_mv:		vref voltage (mv)
+ * @lock:		spinlock
  */
 struct stm32_adc_common {
 	void __iomem			*base;
 	phys_addr_t			phys_base;
 	unsigned long			rate;
 	int				vref_mv;
+	spinlock_t			lock;		/* lock for common register */
 };
 
 #endif
diff --git a/drivers/iio/adc/stm32-adc.c b/drivers/iio/adc/stm32-adc.c
index 80c3f963527b..3cda529f081d 100644
--- a/drivers/iio/adc/stm32-adc.c
+++ b/drivers/iio/adc/stm32-adc.c
@@ -21,10 +21,11 @@
 #include <linux/io.h>
 #include <linux/iopoll.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/nvmem-consumer.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 
 #include "stm32-adc-core.h"
 
@@ -35,12 +36,13 @@
 #define STM32H7_BOOST_CLKRATE		20000000UL
 
 #define STM32_ADC_CH_MAX		20	/* max number of channels */
-#define STM32_ADC_CH_SZ			10	/* max channel name size */
+#define STM32_ADC_CH_SZ			16	/* max channel name size */
 #define STM32_ADC_MAX_SQ		16	/* SQ1..SQ16 */
 #define STM32_ADC_MAX_SMP		7	/* SMPx range is [0..7] */
 #define STM32_ADC_TIMEOUT_US		100000
 #define STM32_ADC_TIMEOUT	(msecs_to_jiffies(STM32_ADC_TIMEOUT_US / 1000))
 #define STM32_ADC_HW_STOP_DELAY_MS	100
+#define STM32_ADC_VREFINT_VOLTAGE	3300
 
 #define STM32_DMA_BUFFER_SIZE		PAGE_SIZE
 
@@ -77,6 +79,30 @@ enum stm32_adc_extsel {
 	STM32_EXT20,
 };
 
+enum stm32_adc_int_ch {
+	STM32_ADC_INT_CH_NONE = -1,
+	STM32_ADC_INT_CH_VDDCORE,
+	STM32_ADC_INT_CH_VREFINT,
+	STM32_ADC_INT_CH_VBAT,
+	STM32_ADC_INT_CH_NB,
+};
+
+/**
+ * struct stm32_adc_ic - ADC internal channels
+ * @name:	name of the internal channel
+ * @idx:	internal channel enum index
+ */
+struct stm32_adc_ic {
+	const char *name;
+	u32 idx;
+};
+
+static const struct stm32_adc_ic stm32_adc_ic[STM32_ADC_INT_CH_NB] = {
+	{ "vddcore", STM32_ADC_INT_CH_VDDCORE },
+	{ "vrefint", STM32_ADC_INT_CH_VREFINT },
+	{ "vbat", STM32_ADC_INT_CH_VBAT },
+};
+
 /**
  * struct stm32_adc_trig_info - ADC trigger info
  * @name:		name of the trigger, corresponding to its source
@@ -114,6 +140,16 @@ struct stm32_adc_regs {
 };
 
 /**
+ * struct stm32_adc_vrefint - stm32 ADC internal reference voltage data
+ * @vrefint_cal:	vrefint calibration value from nvmem
+ * @vrefint_data:	vrefint actual value
+ */
+struct stm32_adc_vrefint {
+	u32 vrefint_cal;
+	u32 vrefint_data;
+};
+
+/**
  * struct stm32_adc_regspec - stm32 registers definition
  * @dr:			data register offset
  * @ier_eoc:		interrupt enable register & eocie bitfield
@@ -126,6 +162,9 @@ struct stm32_adc_regs {
  * @res:		resolution selection register & bitfield
  * @smpr:		smpr1 & smpr2 registers offset array
  * @smp_bits:		smpr1 & smpr2 index and bitfields
+ * @or_vdd:		option register & vddcore bitfield
+ * @ccr_vbat:		common register & vbat bitfield
+ * @ccr_vref:		common register & vrefint bitfield
  */
 struct stm32_adc_regspec {
 	const u32 dr;
@@ -139,6 +178,9 @@ struct stm32_adc_regspec {
 	const struct stm32_adc_regs res;
 	const u32 smpr[2];
 	const struct stm32_adc_regs *smp_bits;
+	const struct stm32_adc_regs or_vdd;
+	const struct stm32_adc_regs ccr_vbat;
+	const struct stm32_adc_regs ccr_vref;
 };
 
 struct stm32_adc;
@@ -154,7 +196,9 @@ struct stm32_adc;
  * @start_conv:		routine to start conversions
  * @stop_conv:		routine to stop conversions
  * @unprepare:		optional unprepare routine (disable, power-down)
+ * @irq_clear:		routine to clear irqs
  * @smp_cycles:		programmable sampling time (ADC clock cycles)
+ * @ts_vrefint_ns:	vrefint minimum sampling time in ns
  */
 struct stm32_adc_cfg {
 	const struct stm32_adc_regspec	*regs;
@@ -162,11 +206,13 @@ struct stm32_adc_cfg {
 	struct stm32_adc_trig_info	*trigs;
 	bool clk_required;
 	bool has_vregready;
-	int (*prepare)(struct stm32_adc *);
-	void (*start_conv)(struct stm32_adc *, bool dma);
-	void (*stop_conv)(struct stm32_adc *);
-	void (*unprepare)(struct stm32_adc *);
+	int (*prepare)(struct iio_dev *);
+	void (*start_conv)(struct iio_dev *, bool dma);
+	void (*stop_conv)(struct iio_dev *);
+	void (*unprepare)(struct iio_dev *);
+	void (*irq_clear)(struct iio_dev *indio_dev, u32 msk);
 	const unsigned int *smp_cycles;
+	const unsigned int ts_vrefint_ns;
 };
 
 /**
@@ -175,7 +221,7 @@ struct stm32_adc_cfg {
  * @offset:		ADC instance register offset in ADC block
  * @cfg:		compatible configuration data
  * @completion:		end of single conversion completion
- * @buffer:		data buffer
+ * @buffer:		data buffer + 8 bytes for timestamp if enabled
  * @clk:		clock for this adc instance
  * @irq:		interrupt for this adc instance
  * @lock:		spinlock
@@ -191,14 +237,18 @@ struct stm32_adc_cfg {
  * @pcsel:		bitmask to preselect channels on some devices
  * @smpr_val:		sampling time settings (e.g. smpr1 / smpr2)
  * @cal:		optional calibration data on some devices
+ * @vrefint:		internal reference voltage data
  * @chan_name:		channel name array
+ * @num_diff:		number of differential channels
+ * @int_ch:		internal channel indexes array
+ * @nsmps:		number of channels with optional sample time
  */
 struct stm32_adc {
 	struct stm32_adc_common	*common;
 	u32			offset;
 	const struct stm32_adc_cfg	*cfg;
 	struct completion	completion;
-	u16			buffer[STM32_ADC_MAX_SQ];
+	u16			buffer[STM32_ADC_MAX_SQ + 4] __aligned(8);
 	struct clk		*clk;
 	int			irq;
 	spinlock_t		lock;		/* interrupt lock */
@@ -214,7 +264,11 @@ struct stm32_adc {
 	u32			pcsel;
 	u32			smpr_val[2];
 	struct stm32_adc_calib	cal;
+	struct stm32_adc_vrefint vrefint;
 	char			chan_name[STM32_ADC_CH_MAX][STM32_ADC_CH_SZ];
+	u32			num_diff;
+	int			int_ch[STM32_ADC_INT_CH_NB];
+	int			nsmps;
 };
 
 struct stm32_adc_diff_channel {
@@ -447,7 +501,25 @@ static const struct stm32_adc_regspec stm32h7_adc_regspec = {
 	.smp_bits = stm32h7_smp_bits,
 };
 
-/**
+static const struct stm32_adc_regspec stm32mp1_adc_regspec = {
+	.dr = STM32H7_ADC_DR,
+	.ier_eoc = { STM32H7_ADC_IER, STM32H7_EOCIE },
+	.ier_ovr = { STM32H7_ADC_IER, STM32H7_OVRIE },
+	.isr_eoc = { STM32H7_ADC_ISR, STM32H7_EOC },
+	.isr_ovr = { STM32H7_ADC_ISR, STM32H7_OVR },
+	.sqr = stm32h7_sq,
+	.exten = { STM32H7_ADC_CFGR, STM32H7_EXTEN_MASK, STM32H7_EXTEN_SHIFT },
+	.extsel = { STM32H7_ADC_CFGR, STM32H7_EXTSEL_MASK,
+		    STM32H7_EXTSEL_SHIFT },
+	.res = { STM32H7_ADC_CFGR, STM32H7_RES_MASK, STM32H7_RES_SHIFT },
+	.smpr = { STM32H7_ADC_SMPR1, STM32H7_ADC_SMPR2 },
+	.smp_bits = stm32h7_smp_bits,
+	.or_vdd = { STM32MP1_ADC2_OR, STM32MP1_VDDCOREEN },
+	.ccr_vbat = { STM32H7_ADC_CCR, STM32H7_VBATEN },
+	.ccr_vref = { STM32H7_ADC_CCR, STM32H7_VREFEN },
+};
+
+/*
  * STM32 ADC registers access routines
  * @adc: stm32 adc instance
  * @reg: reg offset in adc instance
@@ -485,6 +557,14 @@ static void stm32_adc_set_bits(struct stm32_adc *adc, u32 reg, u32 bits)
 	spin_unlock_irqrestore(&adc->lock, flags);
 }
 
+static void stm32_adc_set_bits_common(struct stm32_adc *adc, u32 reg, u32 bits)
+{
+	spin_lock(&adc->common->lock);
+	writel_relaxed(readl_relaxed(adc->common->base + reg) | bits,
+		       adc->common->base + reg);
+	spin_unlock(&adc->common->lock);
+}
+
 static void stm32_adc_clr_bits(struct stm32_adc *adc, u32 reg, u32 bits)
 {
 	unsigned long flags;
@@ -494,6 +574,14 @@ static void stm32_adc_clr_bits(struct stm32_adc *adc, u32 reg, u32 bits)
 	spin_unlock_irqrestore(&adc->lock, flags);
 }
 
+static void stm32_adc_clr_bits_common(struct stm32_adc *adc, u32 reg, u32 bits)
+{
+	spin_lock(&adc->common->lock);
+	writel_relaxed(readl_relaxed(adc->common->base + reg) & ~bits,
+		       adc->common->base + reg);
+	spin_unlock(&adc->common->lock);
+}
+
 /**
  * stm32_adc_conv_irq_enable() - Enable end of conversion interrupt
  * @adc: stm32 adc instance
@@ -538,32 +626,31 @@ static void stm32_adc_set_res(struct stm32_adc *adc)
 
 static int stm32_adc_hw_stop(struct device *dev)
 {
-	struct stm32_adc *adc = dev_get_drvdata(dev);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 
 	if (adc->cfg->unprepare)
-		adc->cfg->unprepare(adc);
+		adc->cfg->unprepare(indio_dev);
 
-	if (adc->clk)
-		clk_disable_unprepare(adc->clk);
+	clk_disable_unprepare(adc->clk);
 
 	return 0;
 }
 
 static int stm32_adc_hw_start(struct device *dev)
 {
-	struct stm32_adc *adc = dev_get_drvdata(dev);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 
-	if (adc->clk) {
-		ret = clk_prepare_enable(adc->clk);
-		if (ret)
-			return ret;
-	}
+	ret = clk_prepare_enable(adc->clk);
+	if (ret)
+		return ret;
 
 	stm32_adc_set_res(adc);
 
 	if (adc->cfg->prepare) {
-		ret = adc->cfg->prepare(adc);
+		ret = adc->cfg->prepare(indio_dev);
 		if (ret)
 			goto err_clk_dis;
 	}
@@ -571,15 +658,68 @@ static int stm32_adc_hw_start(struct device *dev)
 	return 0;
 
 err_clk_dis:
-	if (adc->clk)
-		clk_disable_unprepare(adc->clk);
+	clk_disable_unprepare(adc->clk);
 
 	return ret;
 }
 
+static void stm32_adc_int_ch_enable(struct iio_dev *indio_dev)
+{
+	struct stm32_adc *adc = iio_priv(indio_dev);
+	u32 i;
+
+	for (i = 0; i < STM32_ADC_INT_CH_NB; i++) {
+		if (adc->int_ch[i] == STM32_ADC_INT_CH_NONE)
+			continue;
+
+		switch (i) {
+		case STM32_ADC_INT_CH_VDDCORE:
+			dev_dbg(&indio_dev->dev, "Enable VDDCore\n");
+			stm32_adc_set_bits(adc, adc->cfg->regs->or_vdd.reg,
+					   adc->cfg->regs->or_vdd.mask);
+			break;
+		case STM32_ADC_INT_CH_VREFINT:
+			dev_dbg(&indio_dev->dev, "Enable VREFInt\n");
+			stm32_adc_set_bits_common(adc, adc->cfg->regs->ccr_vref.reg,
+						  adc->cfg->regs->ccr_vref.mask);
+			break;
+		case STM32_ADC_INT_CH_VBAT:
+			dev_dbg(&indio_dev->dev, "Enable VBAT\n");
+			stm32_adc_set_bits_common(adc, adc->cfg->regs->ccr_vbat.reg,
+						  adc->cfg->regs->ccr_vbat.mask);
+			break;
+		}
+	}
+}
+
+static void stm32_adc_int_ch_disable(struct stm32_adc *adc)
+{
+	u32 i;
+
+	for (i = 0; i < STM32_ADC_INT_CH_NB; i++) {
+		if (adc->int_ch[i] == STM32_ADC_INT_CH_NONE)
+			continue;
+
+		switch (i) {
+		case STM32_ADC_INT_CH_VDDCORE:
+			stm32_adc_clr_bits(adc, adc->cfg->regs->or_vdd.reg,
+					   adc->cfg->regs->or_vdd.mask);
+			break;
+		case STM32_ADC_INT_CH_VREFINT:
+			stm32_adc_clr_bits_common(adc, adc->cfg->regs->ccr_vref.reg,
+						  adc->cfg->regs->ccr_vref.mask);
+			break;
+		case STM32_ADC_INT_CH_VBAT:
+			stm32_adc_clr_bits_common(adc, adc->cfg->regs->ccr_vbat.reg,
+						  adc->cfg->regs->ccr_vbat.mask);
+			break;
+		}
+	}
+}
+
 /**
  * stm32f4_adc_start_conv() - Start conversions for regular channels.
- * @adc: stm32 adc instance
+ * @indio_dev: IIO device instance
  * @dma: use dma to transfer conversion result
  *
  * Start conversions for regular channels.
@@ -587,8 +727,10 @@ err_clk_dis:
  * conversions, in IIO buffer modes. Otherwise, use ADC interrupt with direct
  * DR read instead (e.g. read_raw, or triggered buffer mode without DMA).
  */
-static void stm32f4_adc_start_conv(struct stm32_adc *adc, bool dma)
+static void stm32f4_adc_start_conv(struct iio_dev *indio_dev, bool dma)
 {
+	struct stm32_adc *adc = iio_priv(indio_dev);
+
 	stm32_adc_set_bits(adc, STM32F4_ADC_CR1, STM32F4_SCAN);
 
 	if (dma)
@@ -605,8 +747,10 @@ static void stm32f4_adc_start_conv(struct stm32_adc *adc, bool dma)
 		stm32_adc_set_bits(adc, STM32F4_ADC_CR2, STM32F4_SWSTART);
 }
 
-static void stm32f4_adc_stop_conv(struct stm32_adc *adc)
+static void stm32f4_adc_stop_conv(struct iio_dev *indio_dev)
 {
+	struct stm32_adc *adc = iio_priv(indio_dev);
+
 	stm32_adc_clr_bits(adc, STM32F4_ADC_CR2, STM32F4_EXTEN_MASK);
 	stm32_adc_clr_bits(adc, STM32F4_ADC_SR, STM32F4_STRT);
 
@@ -615,8 +759,16 @@ static void stm32f4_adc_stop_conv(struct stm32_adc *adc)
 			   STM32F4_ADON | STM32F4_DMA | STM32F4_DDS);
 }
 
-static void stm32h7_adc_start_conv(struct stm32_adc *adc, bool dma)
+static void stm32f4_adc_irq_clear(struct iio_dev *indio_dev, u32 msk)
 {
+	struct stm32_adc *adc = iio_priv(indio_dev);
+
+	stm32_adc_clr_bits(adc, adc->cfg->regs->isr_eoc.reg, msk);
+}
+
+static void stm32h7_adc_start_conv(struct iio_dev *indio_dev, bool dma)
+{
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	enum stm32h7_adc_dmngt dmngt;
 	unsigned long flags;
 	u32 val;
@@ -635,9 +787,9 @@ static void stm32h7_adc_start_conv(struct stm32_adc *adc, bool dma)
 	stm32_adc_set_bits(adc, STM32H7_ADC_CR, STM32H7_ADSTART);
 }
 
-static void stm32h7_adc_stop_conv(struct stm32_adc *adc)
+static void stm32h7_adc_stop_conv(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 	u32 val;
 
@@ -652,9 +804,16 @@ static void stm32h7_adc_stop_conv(struct stm32_adc *adc)
 	stm32_adc_clr_bits(adc, STM32H7_ADC_CFGR, STM32H7_DMNGT_MASK);
 }
 
-static int stm32h7_adc_exit_pwr_down(struct stm32_adc *adc)
+static void stm32h7_adc_irq_clear(struct iio_dev *indio_dev, u32 msk)
+{
+	struct stm32_adc *adc = iio_priv(indio_dev);
+	/* On STM32H7 IRQs are cleared by writing 1 into ISR register */
+	stm32_adc_set_bits(adc, adc->cfg->regs->isr_eoc.reg, msk);
+}
+
+static int stm32h7_adc_exit_pwr_down(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 	u32 val;
 
@@ -690,9 +849,9 @@ static void stm32h7_adc_enter_pwr_down(struct stm32_adc *adc)
 	stm32_adc_set_bits(adc, STM32H7_ADC_CR, STM32H7_DEEPPWD);
 }
 
-static int stm32h7_adc_enable(struct stm32_adc *adc)
+static int stm32h7_adc_enable(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 	u32 val;
 
@@ -713,12 +872,15 @@ static int stm32h7_adc_enable(struct stm32_adc *adc)
 	return ret;
 }
 
-static void stm32h7_adc_disable(struct stm32_adc *adc)
+static void stm32h7_adc_disable(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 	u32 val;
 
+	if (!(stm32_adc_readl(adc, STM32H7_ADC_CR) & STM32H7_ADEN))
+		return;
+
 	/* Disable ADC and wait until it's effectively disabled */
 	stm32_adc_set_bits(adc, STM32H7_ADC_CR, STM32H7_ADDIS);
 	ret = stm32_adc_readl_poll_timeout(STM32H7_ADC_CR, val,
@@ -730,12 +892,12 @@ static void stm32h7_adc_disable(struct stm32_adc *adc)
 
 /**
  * stm32h7_adc_read_selfcalib() - read calibration shadow regs, save result
- * @adc: stm32 adc instance
+ * @indio_dev: IIO device instance
  * Note: Must be called once ADC is enabled, so LINCALRDYW[1..6] are writable
  */
-static int stm32h7_adc_read_selfcalib(struct stm32_adc *adc)
+static int stm32h7_adc_read_selfcalib(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int i, ret;
 	u32 lincalrdyw_mask, val;
 
@@ -774,12 +936,12 @@ static int stm32h7_adc_read_selfcalib(struct stm32_adc *adc)
 
 /**
  * stm32h7_adc_restore_selfcalib() - Restore saved self-calibration result
- * @adc: stm32 adc instance
+ * @indio_dev: IIO device instance
  * Note: ADC must be enabled, with no on-going conversions.
  */
-static int stm32h7_adc_restore_selfcalib(struct stm32_adc *adc)
+static int stm32h7_adc_restore_selfcalib(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int i, ret;
 	u32 lincalrdyw_mask, val;
 
@@ -832,7 +994,7 @@ static int stm32h7_adc_restore_selfcalib(struct stm32_adc *adc)
 	return 0;
 }
 
-/**
+/*
  * Fixed timeout value for ADC calibration.
  * worst cases:
  * - low clock frequency
@@ -847,18 +1009,21 @@ static int stm32h7_adc_restore_selfcalib(struct stm32_adc *adc)
 
 /**
  * stm32h7_adc_selfcalib() - Procedure to calibrate ADC
- * @adc: stm32 adc instance
+ * @indio_dev: IIO device instance
  * Note: Must be called once ADC is out of power down.
  */
-static int stm32h7_adc_selfcalib(struct stm32_adc *adc)
+static int stm32h7_adc_selfcalib(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int ret;
 	u32 val;
 
 	if (adc->cal.calibrated)
 		return true;
 
+	/* ADC must be disabled for calibration */
+	stm32h7_adc_disable(indio_dev);
+
 	/*
 	 * Select calibration mode:
 	 * - Offset calibration for single ended inputs
@@ -903,7 +1068,7 @@ out:
 
 /**
  * stm32h7_adc_prepare() - Leave power down mode to enable ADC.
- * @adc: stm32 adc instance
+ * @indio_dev: IIO device instance
  * Leave power down mode.
  * Configure channels as single ended or differential before enabling ADC.
  * Enable ADC.
@@ -912,30 +1077,33 @@ out:
  * - Only one input is selected for single ended (e.g. 'vinp')
  * - Two inputs are selected for differential channels (e.g. 'vinp' & 'vinn')
  */
-static int stm32h7_adc_prepare(struct stm32_adc *adc)
+static int stm32h7_adc_prepare(struct iio_dev *indio_dev)
 {
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	int calib, ret;
 
-	ret = stm32h7_adc_exit_pwr_down(adc);
+	ret = stm32h7_adc_exit_pwr_down(indio_dev);
 	if (ret)
 		return ret;
 
-	ret = stm32h7_adc_selfcalib(adc);
+	ret = stm32h7_adc_selfcalib(indio_dev);
 	if (ret < 0)
 		goto pwr_dwn;
 	calib = ret;
 
+	stm32_adc_int_ch_enable(indio_dev);
+
 	stm32_adc_writel(adc, STM32H7_ADC_DIFSEL, adc->difsel);
 
-	ret = stm32h7_adc_enable(adc);
+	ret = stm32h7_adc_enable(indio_dev);
 	if (ret)
-		goto pwr_dwn;
+		goto ch_disable;
 
 	/* Either restore or read calibration result for future reference */
 	if (calib)
-		ret = stm32h7_adc_restore_selfcalib(adc);
+		ret = stm32h7_adc_restore_selfcalib(indio_dev);
 	else
-		ret = stm32h7_adc_read_selfcalib(adc);
+		ret = stm32h7_adc_read_selfcalib(indio_dev);
 	if (ret)
 		goto disable;
 
@@ -944,16 +1112,22 @@ static int stm32h7_adc_prepare(struct stm32_adc *adc)
 	return 0;
 
 disable:
-	stm32h7_adc_disable(adc);
+	stm32h7_adc_disable(indio_dev);
+ch_disable:
+	stm32_adc_int_ch_disable(adc);
 pwr_dwn:
 	stm32h7_adc_enter_pwr_down(adc);
 
 	return ret;
 }
 
-static void stm32h7_adc_unprepare(struct stm32_adc *adc)
+static void stm32h7_adc_unprepare(struct iio_dev *indio_dev)
 {
-	stm32h7_adc_disable(adc);
+	struct stm32_adc *adc = iio_priv(indio_dev);
+
+	stm32_adc_writel(adc, STM32H7_ADC_PCSEL, 0);
+	stm32h7_adc_disable(indio_dev);
+	stm32_adc_int_ch_disable(adc);
 	stm32h7_adc_enter_pwr_down(adc);
 }
 
@@ -1136,11 +1310,9 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev,
 
 	adc->bufi = 0;
 
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0)
 		return ret;
-	}
 
 	/* Apply sampling time settings */
 	stm32_adc_writel(adc, regs->smpr[0], adc->smpr_val[0]);
@@ -1160,7 +1332,7 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev,
 
 	stm32_adc_conv_irq_enable(adc);
 
-	adc->cfg->start_conv(adc, false);
+	adc->cfg->start_conv(indio_dev, false);
 
 	timeout = wait_for_completion_interruptible_timeout(
 					&adc->completion, STM32_ADC_TIMEOUT);
@@ -1173,7 +1345,7 @@ static int stm32_adc_single_conv(struct iio_dev *indio_dev,
 		ret = IIO_VAL_INT;
 	}
 
-	adc->cfg->stop_conv(adc);
+	adc->cfg->stop_conv(indio_dev);
 
 	stm32_adc_conv_irq_disable(adc);
 
@@ -1192,6 +1364,7 @@ static int stm32_adc_read_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_PROCESSED:
 		ret = iio_device_claim_direct_mode(indio_dev);
 		if (ret)
 			return ret;
@@ -1199,6 +1372,10 @@ static int stm32_adc_read_raw(struct iio_dev *indio_dev,
 			ret = stm32_adc_single_conv(indio_dev, chan, val);
 		else
 			ret = -EINVAL;
+
+		if (mask == IIO_CHAN_INFO_PROCESSED)
+			*val = STM32_ADC_VREFINT_VOLTAGE * adc->vrefint.vrefint_cal / *val;
+
 		iio_device_release_direct_mode(indio_dev);
 		return ret;
 
@@ -1225,23 +1402,40 @@ static int stm32_adc_read_raw(struct iio_dev *indio_dev,
 	}
 }
 
+static void stm32_adc_irq_clear(struct iio_dev *indio_dev, u32 msk)
+{
+	struct stm32_adc *adc = iio_priv(indio_dev);
+
+	adc->cfg->irq_clear(indio_dev, msk);
+}
+
 static irqreturn_t stm32_adc_threaded_isr(int irq, void *data)
 {
-	struct stm32_adc *adc = data;
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = data;
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	const struct stm32_adc_regspec *regs = adc->cfg->regs;
 	u32 status = stm32_adc_readl(adc, regs->isr_eoc.reg);
 
-	if (status & regs->isr_ovr.mask)
+	/* Check ovr status right now, as ovr mask should be already disabled */
+	if (status & regs->isr_ovr.mask) {
+		/*
+		 * Clear ovr bit to avoid subsequent calls to IRQ handler.
+		 * This requires to stop ADC first. OVR bit state in ISR,
+		 * is propaged to CSR register by hardware.
+		 */
+		adc->cfg->stop_conv(indio_dev);
+		stm32_adc_irq_clear(indio_dev, regs->isr_ovr.mask);
 		dev_err(&indio_dev->dev, "Overrun, stopping: restart needed\n");
+		return IRQ_HANDLED;
+	}
 
-	return IRQ_HANDLED;
+	return IRQ_NONE;
 }
 
 static irqreturn_t stm32_adc_isr(int irq, void *data)
 {
-	struct stm32_adc *adc = data;
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = data;
+	struct stm32_adc *adc = iio_priv(indio_dev);
 	const struct stm32_adc_regspec *regs = adc->cfg->regs;
 	u32 status = stm32_adc_readl(adc, regs->isr_eoc.reg);
 
@@ -1300,7 +1494,7 @@ static int stm32_adc_set_watermark(struct iio_dev *indio_dev, unsigned int val)
 	 * dma cyclic transfers are used, buffer is split into two periods.
 	 * There should be :
 	 * - always one buffer (period) dma is working on
-	 * - one buffer (period) driver can push with iio_trigger_poll().
+	 * - one buffer (period) driver can push data.
 	 */
 	watermark = min(watermark, val * (unsigned)(sizeof(u16)));
 	adc->rx_buf_sz = min(rx_buf_sz, watermark * 2 * adc->num_conv);
@@ -1315,11 +1509,9 @@ static int stm32_adc_update_scan_mode(struct iio_dev *indio_dev,
 	struct device *dev = indio_dev->dev.parent;
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0)
 		return ret;
-	}
 
 	adc->num_conv = bitmap_weight(scan_mask, indio_dev->masklength);
 
@@ -1330,8 +1522,8 @@ static int stm32_adc_update_scan_mode(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static int stm32_adc_of_xlate(struct iio_dev *indio_dev,
-			      const struct of_phandle_args *iiospec)
+static int stm32_adc_fwnode_xlate(struct iio_dev *indio_dev,
+				  const struct fwnode_reference_args *iiospec)
 {
 	int i;
 
@@ -1364,11 +1556,9 @@ static int stm32_adc_debugfs_reg_access(struct iio_dev *indio_dev,
 	struct device *dev = indio_dev->dev.parent;
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0)
 		return ret;
-	}
 
 	if (!readval)
 		stm32_adc_writel(adc, reg, writeval);
@@ -1387,7 +1577,7 @@ static const struct iio_info stm32_adc_iio_info = {
 	.hwfifo_set_watermark = stm32_adc_set_watermark,
 	.update_scan_mode = stm32_adc_update_scan_mode,
 	.debugfs_reg_access = stm32_adc_debugfs_reg_access,
-	.of_xlate = stm32_adc_of_xlate,
+	.fwnode_xlate = stm32_adc_fwnode_xlate,
 };
 
 static unsigned int stm32_adc_dma_residue(struct stm32_adc *adc)
@@ -1418,8 +1608,30 @@ static unsigned int stm32_adc_dma_residue(struct stm32_adc *adc)
 static void stm32_adc_dma_buffer_done(void *data)
 {
 	struct iio_dev *indio_dev = data;
+	struct stm32_adc *adc = iio_priv(indio_dev);
+	int residue = stm32_adc_dma_residue(adc);
 
-	iio_trigger_poll_chained(indio_dev->trig);
+	/*
+	 * In DMA mode the trigger services of IIO are not used
+	 * (e.g. no call to iio_trigger_poll).
+	 * Calling irq handler associated to the hardware trigger is not
+	 * relevant as the conversions have already been done. Data
+	 * transfers are performed directly in DMA callback instead.
+	 * This implementation avoids to call trigger irq handler that
+	 * may sleep, in an atomic context (DMA irq handler context).
+	 */
+	dev_dbg(&indio_dev->dev, "%s bufi=%d\n", __func__, adc->bufi);
+
+	while (residue >= indio_dev->scan_bytes) {
+		u16 *buffer = (u16 *)&adc->rx_buf[adc->bufi];
+
+		iio_push_to_buffers(indio_dev, buffer);
+
+		residue -= indio_dev->scan_bytes;
+		adc->bufi += indio_dev->scan_bytes;
+		if (adc->bufi >= adc->rx_buf_sz)
+			adc->bufi = 0;
+	}
 }
 
 static int stm32_adc_dma_start(struct iio_dev *indio_dev)
@@ -1460,17 +1672,15 @@ static int stm32_adc_dma_start(struct iio_dev *indio_dev)
 	return 0;
 }
 
-static int __stm32_adc_buffer_postenable(struct iio_dev *indio_dev)
+static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	struct device *dev = indio_dev->dev.parent;
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret < 0)
 		return ret;
-	}
 
 	ret = stm32_adc_set_trig(indio_dev, indio_dev->trig);
 	if (ret) {
@@ -1492,7 +1702,7 @@ static int __stm32_adc_buffer_postenable(struct iio_dev *indio_dev)
 	if (!adc->dma_chan)
 		stm32_adc_conv_irq_enable(adc);
 
-	adc->cfg->start_conv(adc, !!adc->dma_chan);
+	adc->cfg->start_conv(indio_dev, !!adc->dma_chan);
 
 	return 0;
 
@@ -1505,27 +1715,12 @@ err_pm_put:
 	return ret;
 }
 
-static int stm32_adc_buffer_postenable(struct iio_dev *indio_dev)
-{
-	int ret;
-
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret < 0)
-		return ret;
-
-	ret = __stm32_adc_buffer_postenable(indio_dev);
-	if (ret < 0)
-		iio_triggered_buffer_predisable(indio_dev);
-
-	return ret;
-}
-
-static void __stm32_adc_buffer_predisable(struct iio_dev *indio_dev)
+static int stm32_adc_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	struct device *dev = indio_dev->dev.parent;
 
-	adc->cfg->stop_conv(adc);
+	adc->cfg->stop_conv(indio_dev);
 	if (!adc->dma_chan)
 		stm32_adc_conv_irq_disable(adc);
 
@@ -1539,19 +1734,8 @@ static void __stm32_adc_buffer_predisable(struct iio_dev *indio_dev)
 
 	pm_runtime_mark_last_busy(dev);
 	pm_runtime_put_autosuspend(dev);
-}
-
-static int stm32_adc_buffer_predisable(struct iio_dev *indio_dev)
-{
-	int ret;
-
-	__stm32_adc_buffer_predisable(indio_dev);
 
-	ret = iio_triggered_buffer_predisable(indio_dev);
-	if (ret < 0)
-		dev_err(&indio_dev->dev, "predisable failed\n");
-
-	return ret;
+	return 0;
 }
 
 static const struct iio_buffer_setup_ops stm32_adc_buffer_setup_ops = {
@@ -1567,31 +1751,14 @@ static irqreturn_t stm32_adc_trigger_handler(int irq, void *p)
 
 	dev_dbg(&indio_dev->dev, "%s bufi=%d\n", __func__, adc->bufi);
 
-	if (!adc->dma_chan) {
-		/* reset buffer index */
-		adc->bufi = 0;
-		iio_push_to_buffers_with_timestamp(indio_dev, adc->buffer,
-						   pf->timestamp);
-	} else {
-		int residue = stm32_adc_dma_residue(adc);
-
-		while (residue >= indio_dev->scan_bytes) {
-			u16 *buffer = (u16 *)&adc->rx_buf[adc->bufi];
-
-			iio_push_to_buffers_with_timestamp(indio_dev, buffer,
-							   pf->timestamp);
-			residue -= indio_dev->scan_bytes;
-			adc->bufi += indio_dev->scan_bytes;
-			if (adc->bufi >= adc->rx_buf_sz)
-				adc->bufi = 0;
-		}
-	}
-
+	/* reset buffer index */
+	adc->bufi = 0;
+	iio_push_to_buffers_with_timestamp(indio_dev, adc->buffer,
+					   pf->timestamp);
 	iio_trigger_notify_done(indio_dev->trig);
 
 	/* re-enable eoc irq */
-	if (!adc->dma_chan)
-		stm32_adc_conv_irq_enable(adc);
+	stm32_adc_conv_irq_enable(adc);
 
 	return IRQ_HANDLED;
 }
@@ -1607,14 +1774,14 @@ static const struct iio_chan_spec_ext_info stm32_adc_ext_info[] = {
 	{},
 };
 
-static int stm32_adc_of_get_resolution(struct iio_dev *indio_dev)
+static int stm32_adc_fw_get_resolution(struct iio_dev *indio_dev)
 {
-	struct device_node *node = indio_dev->dev.of_node;
+	struct device *dev = &indio_dev->dev;
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	unsigned int i;
 	u32 res;
 
-	if (of_property_read_u32(node, "assigned-resolution-bits", &res))
+	if (device_property_read_u32(dev, "assigned-resolution-bits", &res))
 		res = adc->cfg->adc_info->resolutions[0];
 
 	for (i = 0; i < adc->cfg->adc_info->num_res; i++)
@@ -1637,6 +1804,13 @@ static void stm32_adc_smpr_init(struct stm32_adc *adc, int channel, u32 smp_ns)
 	u32 period_ns, shift = smpr->shift, mask = smpr->mask;
 	unsigned int smp, r = smpr->reg;
 
+	/*
+	 * For vrefint channel, ensure that the sampling time cannot
+	 * be lower than the one specified in the datasheet
+	 */
+	if (channel == adc->int_ch[STM32_ADC_INT_CH_VREFINT])
+		smp_ns = max(smp_ns, adc->cfg->ts_vrefint_ns);
+
 	/* Determine sampling time (ADC clock cycles) */
 	period_ns = NSEC_PER_SEC / adc->common->rate;
 	for (smp = 0; smp <= STM32_ADC_MAX_SMP; smp++)
@@ -1668,7 +1842,10 @@ static void stm32_adc_chan_init_one(struct iio_dev *indio_dev,
 	chan->datasheet_name = name;
 	chan->scan_index = scan_index;
 	chan->indexed = 1;
-	chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+	if (chan->channel == adc->int_ch[STM32_ADC_INT_CH_VREFINT])
+		chan->info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED);
+	else
+		chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
 	chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
 					 BIT(IIO_CHAN_INFO_OFFSET);
 	chan->scan_type.sign = 'u';
@@ -1686,19 +1863,13 @@ static void stm32_adc_chan_init_one(struct iio_dev *indio_dev,
 	}
 }
 
-static int stm32_adc_chan_of_init(struct iio_dev *indio_dev)
+static int stm32_adc_get_legacy_chan_count(struct iio_dev *indio_dev, struct stm32_adc *adc)
 {
-	struct device_node *node = indio_dev->dev.of_node;
-	struct stm32_adc *adc = iio_priv(indio_dev);
+	struct device *dev = &indio_dev->dev;
 	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
-	struct stm32_adc_diff_channel diff[STM32_ADC_CH_MAX];
-	struct property *prop;
-	const __be32 *cur;
-	struct iio_chan_spec *channels;
-	int scan_index = 0, num_channels = 0, num_diff = 0, ret, i;
-	u32 val, smp = 0;
+	int num_channels = 0, ret;
 
-	ret = of_property_count_u32_elems(node, "st,adc-channels");
+	ret = device_property_count_u32(dev, "st,adc-channels");
 	if (ret > adc_info->max_channels) {
 		dev_err(&indio_dev->dev, "Bad st,adc-channels?\n");
 		return -EINVAL;
@@ -1706,106 +1877,320 @@ static int stm32_adc_chan_of_init(struct iio_dev *indio_dev)
 		num_channels += ret;
 	}
 
-	ret = of_property_count_elems_of_size(node, "st,adc-diff-channels",
-					      sizeof(*diff));
+	/*
+	 * each st,adc-diff-channels is a group of 2 u32 so we divide @ret
+	 * to get the *real* number of channels.
+	 */
+	ret = device_property_count_u32(dev, "st,adc-diff-channels");
+	if (ret < 0)
+		return ret;
+
+	ret /= (int)(sizeof(struct stm32_adc_diff_channel) / sizeof(u32));
 	if (ret > adc_info->max_channels) {
 		dev_err(&indio_dev->dev, "Bad st,adc-diff-channels?\n");
 		return -EINVAL;
 	} else if (ret > 0) {
-		int size = ret * sizeof(*diff) / sizeof(u32);
-
-		num_diff = ret;
+		adc->num_diff = ret;
 		num_channels += ret;
-		ret = of_property_read_u32_array(node, "st,adc-diff-channels",
-						 (u32 *)diff, size);
-		if (ret)
-			return ret;
-	}
-
-	if (!num_channels) {
-		dev_err(&indio_dev->dev, "No channels configured\n");
-		return -ENODATA;
 	}
 
 	/* Optional sample time is provided either for each, or all channels */
-	ret = of_property_count_u32_elems(node, "st,min-sample-time-nsecs");
-	if (ret > 1 && ret != num_channels) {
+	adc->nsmps = device_property_count_u32(dev, "st,min-sample-time-nsecs");
+	if (adc->nsmps > 1 && adc->nsmps != num_channels) {
 		dev_err(&indio_dev->dev, "Invalid st,min-sample-time-nsecs\n");
 		return -EINVAL;
 	}
 
-	channels = devm_kcalloc(&indio_dev->dev, num_channels,
-				sizeof(struct iio_chan_spec), GFP_KERNEL);
-	if (!channels)
-		return -ENOMEM;
+	return num_channels;
+}
 
-	of_property_for_each_u32(node, "st,adc-channels", prop, cur, val) {
-		if (val >= adc_info->max_channels) {
-			dev_err(&indio_dev->dev, "Invalid channel %d\n", val);
-			return -EINVAL;
+static int stm32_adc_legacy_chan_init(struct iio_dev *indio_dev,
+				      struct stm32_adc *adc,
+				      struct iio_chan_spec *channels,
+				      int nchans)
+{
+	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
+	struct stm32_adc_diff_channel diff[STM32_ADC_CH_MAX];
+	struct device *dev = &indio_dev->dev;
+	u32 num_diff = adc->num_diff;
+	int size = num_diff * sizeof(*diff) / sizeof(u32);
+	int scan_index = 0, ret, i, c;
+	u32 smp = 0, smps[STM32_ADC_CH_MAX], chans[STM32_ADC_CH_MAX];
+
+	if (num_diff) {
+		ret = device_property_read_u32_array(dev, "st,adc-diff-channels",
+						     (u32 *)diff, size);
+		if (ret) {
+			dev_err(&indio_dev->dev, "Failed to get diff channels %d\n", ret);
+			return ret;
 		}
 
-		/* Channel can't be configured both as single-ended & diff */
 		for (i = 0; i < num_diff; i++) {
-			if (val == diff[i].vinp) {
-				dev_err(&indio_dev->dev,
-					"channel %d miss-configured\n",	val);
+			if (diff[i].vinp >= adc_info->max_channels ||
+			    diff[i].vinn >= adc_info->max_channels) {
+				dev_err(&indio_dev->dev, "Invalid channel in%d-in%d\n",
+					diff[i].vinp, diff[i].vinn);
 				return -EINVAL;
 			}
+
+			stm32_adc_chan_init_one(indio_dev, &channels[scan_index],
+						diff[i].vinp, diff[i].vinn,
+						scan_index, true);
+			scan_index++;
 		}
-		stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val,
-					0, scan_index, false);
-		scan_index++;
 	}
 
-	for (i = 0; i < num_diff; i++) {
-		if (diff[i].vinp >= adc_info->max_channels ||
-		    diff[i].vinn >= adc_info->max_channels) {
-			dev_err(&indio_dev->dev, "Invalid channel in%d-in%d\n",
-				diff[i].vinp, diff[i].vinn);
+	ret = device_property_read_u32_array(dev, "st,adc-channels", chans,
+					     nchans);
+	if (ret)
+		return ret;
+
+	for (c = 0; c < nchans; c++) {
+		if (chans[c] >= adc_info->max_channels) {
+			dev_err(&indio_dev->dev, "Invalid channel %d\n",
+				chans[c]);
 			return -EINVAL;
 		}
+
+		/* Channel can't be configured both as single-ended & diff */
+		for (i = 0; i < num_diff; i++) {
+			if (chans[c] == diff[i].vinp) {
+				dev_err(&indio_dev->dev, "channel %d misconfigured\n",	chans[c]);
+				return -EINVAL;
+			}
+		}
 		stm32_adc_chan_init_one(indio_dev, &channels[scan_index],
-					diff[i].vinp, diff[i].vinn, scan_index,
-					true);
+					chans[c], 0, scan_index, false);
 		scan_index++;
 	}
 
+	if (adc->nsmps > 0) {
+		ret = device_property_read_u32_array(dev, "st,min-sample-time-nsecs",
+						     smps, adc->nsmps);
+		if (ret)
+			return ret;
+	}
+
 	for (i = 0; i < scan_index; i++) {
 		/*
-		 * Using of_property_read_u32_index(), smp value will only be
-		 * modified if valid u32 value can be decoded. This allows to
-		 * get either no value, 1 shared value for all indexes, or one
-		 * value per channel.
+		 * This check is used with the above logic so that smp value
+		 * will only be modified if valid u32 value can be decoded. This
+		 * allows to get either no value, 1 shared value for all indexes,
+		 * or one value per channel. The point is to have the same
+		 * behavior as 'of_property_read_u32_index()'.
 		 */
-		of_property_read_u32_index(node, "st,min-sample-time-nsecs",
-					   i, &smp);
+		if (i < adc->nsmps)
+			smp = smps[i];
+
 		/* Prepare sampling time settings */
 		stm32_adc_smpr_init(adc, channels[i].channel, smp);
 	}
 
+	return scan_index;
+}
+
+static int stm32_adc_populate_int_ch(struct iio_dev *indio_dev, const char *ch_name,
+				     int chan)
+{
+	struct stm32_adc *adc = iio_priv(indio_dev);
+	u16 vrefint;
+	int i, ret;
+
+	for (i = 0; i < STM32_ADC_INT_CH_NB; i++) {
+		if (!strncmp(stm32_adc_ic[i].name, ch_name, STM32_ADC_CH_SZ)) {
+			if (stm32_adc_ic[i].idx != STM32_ADC_INT_CH_VREFINT) {
+				adc->int_ch[i] = chan;
+				break;
+			}
+
+			/* Get calibration data for vrefint channel */
+			ret = nvmem_cell_read_u16(&indio_dev->dev, "vrefint", &vrefint);
+			if (ret && ret != -ENOENT) {
+				return dev_err_probe(indio_dev->dev.parent, ret,
+						     "nvmem access error\n");
+			}
+			if (ret == -ENOENT) {
+				dev_dbg(&indio_dev->dev, "vrefint calibration not found. Skip vrefint channel\n");
+				return ret;
+			} else if (!vrefint) {
+				dev_dbg(&indio_dev->dev, "Null vrefint calibration value. Skip vrefint channel\n");
+				return -ENOENT;
+			}
+			adc->int_ch[i] = chan;
+			adc->vrefint.vrefint_cal = vrefint;
+		}
+	}
+
+	return 0;
+}
+
+static int stm32_adc_generic_chan_init(struct iio_dev *indio_dev,
+				       struct stm32_adc *adc,
+				       struct iio_chan_spec *channels)
+{
+	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
+	struct fwnode_handle *child;
+	const char *name;
+	int val, scan_index = 0, ret;
+	bool differential;
+	u32 vin[2];
+
+	device_for_each_child_node(&indio_dev->dev, child) {
+		ret = fwnode_property_read_u32(child, "reg", &val);
+		if (ret) {
+			dev_err(&indio_dev->dev, "Missing channel index %d\n", ret);
+			goto err;
+		}
+
+		ret = fwnode_property_read_string(child, "label", &name);
+		/* label is optional */
+		if (!ret) {
+			if (strlen(name) >= STM32_ADC_CH_SZ) {
+				dev_err(&indio_dev->dev, "Label %s exceeds %d characters\n",
+					name, STM32_ADC_CH_SZ);
+				ret = -EINVAL;
+				goto err;
+			}
+			strncpy(adc->chan_name[val], name, STM32_ADC_CH_SZ);
+			ret = stm32_adc_populate_int_ch(indio_dev, name, val);
+			if (ret == -ENOENT)
+				continue;
+			else if (ret)
+				goto err;
+		} else if (ret != -EINVAL) {
+			dev_err(&indio_dev->dev, "Invalid label %d\n", ret);
+			goto err;
+		}
+
+		if (val >= adc_info->max_channels) {
+			dev_err(&indio_dev->dev, "Invalid channel %d\n", val);
+			ret = -EINVAL;
+			goto err;
+		}
+
+		differential = false;
+		ret = fwnode_property_read_u32_array(child, "diff-channels", vin, 2);
+		/* diff-channels is optional */
+		if (!ret) {
+			differential = true;
+			if (vin[0] != val || vin[1] >= adc_info->max_channels) {
+				dev_err(&indio_dev->dev, "Invalid channel in%d-in%d\n",
+					vin[0], vin[1]);
+				goto err;
+			}
+		} else if (ret != -EINVAL) {
+			dev_err(&indio_dev->dev, "Invalid diff-channels property %d\n", ret);
+			goto err;
+		}
+
+		stm32_adc_chan_init_one(indio_dev, &channels[scan_index], val,
+					vin[1], scan_index, differential);
+
+		val = 0;
+		ret = fwnode_property_read_u32(child, "st,min-sample-time-ns", &val);
+		/* st,min-sample-time-ns is optional */
+		if (ret && ret != -EINVAL) {
+			dev_err(&indio_dev->dev, "Invalid st,min-sample-time-ns property %d\n",
+				ret);
+			goto err;
+		}
+
+		stm32_adc_smpr_init(adc, channels[scan_index].channel, val);
+		if (differential)
+			stm32_adc_smpr_init(adc, vin[1], val);
+
+		scan_index++;
+	}
+
+	return scan_index;
+
+err:
+	fwnode_handle_put(child);
+
+	return ret;
+}
+
+static int stm32_adc_chan_fw_init(struct iio_dev *indio_dev, bool timestamping)
+{
+	struct stm32_adc *adc = iio_priv(indio_dev);
+	const struct stm32_adc_info *adc_info = adc->cfg->adc_info;
+	struct iio_chan_spec *channels;
+	int scan_index = 0, num_channels = 0, ret, i;
+	bool legacy = false;
+
+	for (i = 0; i < STM32_ADC_INT_CH_NB; i++)
+		adc->int_ch[i] = STM32_ADC_INT_CH_NONE;
+
+	num_channels = device_get_child_node_count(&indio_dev->dev);
+	/* If no channels have been found, fallback to channels legacy properties. */
+	if (!num_channels) {
+		legacy = true;
+
+		ret = stm32_adc_get_legacy_chan_count(indio_dev, adc);
+		if (!ret) {
+			dev_err(indio_dev->dev.parent, "No channel found\n");
+			return -ENODATA;
+		} else if (ret < 0) {
+			return ret;
+		}
+
+		num_channels = ret;
+	}
+
+	if (num_channels > adc_info->max_channels) {
+		dev_err(&indio_dev->dev, "Channel number [%d] exceeds %d\n",
+			num_channels, adc_info->max_channels);
+		return -EINVAL;
+	}
+
+	if (timestamping)
+		num_channels++;
+
+	channels = devm_kcalloc(&indio_dev->dev, num_channels,
+				sizeof(struct iio_chan_spec), GFP_KERNEL);
+	if (!channels)
+		return -ENOMEM;
+
+	if (legacy)
+		ret = stm32_adc_legacy_chan_init(indio_dev, adc, channels,
+						 num_channels);
+	else
+		ret = stm32_adc_generic_chan_init(indio_dev, adc, channels);
+	if (ret < 0)
+		return ret;
+	scan_index = ret;
+
+	if (timestamping) {
+		struct iio_chan_spec *timestamp = &channels[scan_index];
+
+		timestamp->type = IIO_TIMESTAMP;
+		timestamp->channel = -1;
+		timestamp->scan_index = scan_index;
+		timestamp->scan_type.sign = 's';
+		timestamp->scan_type.realbits = 64;
+		timestamp->scan_type.storagebits = 64;
+
+		scan_index++;
+	}
+
 	indio_dev->num_channels = scan_index;
 	indio_dev->channels = channels;
 
 	return 0;
 }
 
-static int stm32_adc_dma_request(struct iio_dev *indio_dev)
+static int stm32_adc_dma_request(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct stm32_adc *adc = iio_priv(indio_dev);
 	struct dma_slave_config config;
 	int ret;
 
-	adc->dma_chan = dma_request_chan(&indio_dev->dev, "rx");
+	adc->dma_chan = dma_request_chan(dev, "rx");
 	if (IS_ERR(adc->dma_chan)) {
 		ret = PTR_ERR(adc->dma_chan);
-		if (ret != -ENODEV) {
-			if (ret != -EPROBE_DEFER)
-				dev_err(&indio_dev->dev,
-					"DMA channel request failed with %d\n",
-					ret);
-			return ret;
-		}
+		if (ret != -ENODEV)
+			return dev_err_probe(dev, ret,
+					     "DMA channel request failed with\n");
 
 		/* DMA is optional: fall back to IRQ mode */
 		adc->dma_chan = NULL;
@@ -1845,12 +2230,11 @@ static int stm32_adc_probe(struct platform_device *pdev)
 {
 	struct iio_dev *indio_dev;
 	struct device *dev = &pdev->dev;
+	irqreturn_t (*handler)(int irq, void *p) = NULL;
 	struct stm32_adc *adc;
+	bool timestamping = false;
 	int ret;
 
-	if (!pdev->dev.of_node)
-		return -ENODEV;
-
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc));
 	if (!indio_dev)
 		return -ENOMEM;
@@ -1859,18 +2243,16 @@ static int stm32_adc_probe(struct platform_device *pdev)
 	adc->common = dev_get_drvdata(pdev->dev.parent);
 	spin_lock_init(&adc->lock);
 	init_completion(&adc->completion);
-	adc->cfg = (const struct stm32_adc_cfg *)
-		of_match_device(dev->driver->of_match_table, dev)->data;
+	adc->cfg = device_get_match_data(dev);
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
+	device_set_node(&indio_dev->dev, dev_fwnode(&pdev->dev));
 	indio_dev->info = &stm32_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_HARDWARE_TRIGGERED;
 
-	platform_set_drvdata(pdev, adc);
+	platform_set_drvdata(pdev, indio_dev);
 
-	ret = of_property_read_u32(pdev->dev.of_node, "reg", &adc->offset);
+	ret = device_property_read_u32(dev, "reg", &adc->offset);
 	if (ret != 0) {
 		dev_err(&pdev->dev, "missing reg property\n");
 		return -EINVAL;
@@ -1882,7 +2264,7 @@ static int stm32_adc_probe(struct platform_device *pdev)
 
 	ret = devm_request_threaded_irq(&pdev->dev, adc->irq, stm32_adc_isr,
 					stm32_adc_threaded_isr,
-					0, pdev->name, adc);
+					0, pdev->name, indio_dev);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to request IRQ\n");
 		return ret;
@@ -1899,21 +2281,29 @@ static int stm32_adc_probe(struct platform_device *pdev)
 		}
 	}
 
-	ret = stm32_adc_of_get_resolution(indio_dev);
+	ret = stm32_adc_fw_get_resolution(indio_dev);
 	if (ret < 0)
 		return ret;
 
-	ret = stm32_adc_chan_of_init(indio_dev);
+	ret = stm32_adc_dma_request(dev, indio_dev);
 	if (ret < 0)
 		return ret;
 
-	ret = stm32_adc_dma_request(indio_dev);
+	if (!adc->dma_chan) {
+		/* For PIO mode only, iio_pollfunc_store_time stores a timestamp
+		 * in the primary trigger IRQ handler and stm32_adc_trigger_handler
+		 * runs in the IRQ thread to push out buffer along with timestamp.
+		 */
+		handler = &stm32_adc_trigger_handler;
+		timestamping = true;
+	}
+
+	ret = stm32_adc_chan_fw_init(indio_dev, timestamping);
 	if (ret < 0)
-		return ret;
+		goto err_dma_disable;
 
 	ret = iio_triggered_buffer_setup(indio_dev,
-					 &iio_pollfunc_store_time,
-					 &stm32_adc_trigger_handler,
+					 &iio_pollfunc_store_time, handler,
 					 &stm32_adc_buffer_setup_ops);
 	if (ret) {
 		dev_err(&pdev->dev, "buffer setup failed\n");
@@ -1964,8 +2354,8 @@ err_dma_disable:
 
 static int stm32_adc_remove(struct platform_device *pdev)
 {
-	struct stm32_adc *adc = platform_get_drvdata(pdev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct stm32_adc *adc = iio_priv(indio_dev);
 
 	pm_runtime_get_sync(&pdev->dev);
 	iio_device_unregister(indio_dev);
@@ -1984,22 +2374,19 @@ static int stm32_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#if defined(CONFIG_PM_SLEEP)
 static int stm32_adc_suspend(struct device *dev)
 {
-	struct stm32_adc *adc = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 
 	if (iio_buffer_enabled(indio_dev))
-		__stm32_adc_buffer_predisable(indio_dev);
+		stm32_adc_buffer_predisable(indio_dev);
 
 	return pm_runtime_force_suspend(dev);
 }
 
 static int stm32_adc_resume(struct device *dev)
 {
-	struct stm32_adc *adc = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	int ret;
 
 	ret = pm_runtime_force_resume(dev);
@@ -2014,11 +2401,9 @@ static int stm32_adc_resume(struct device *dev)
 	if (ret < 0)
 		return ret;
 
-	return __stm32_adc_buffer_postenable(indio_dev);
+	return stm32_adc_buffer_postenable(indio_dev);
 }
-#endif
 
-#if defined(CONFIG_PM)
 static int stm32_adc_runtime_suspend(struct device *dev)
 {
 	return stm32_adc_hw_stop(dev);
@@ -2028,12 +2413,11 @@ static int stm32_adc_runtime_resume(struct device *dev)
 {
 	return stm32_adc_hw_start(dev);
 }
-#endif
 
 static const struct dev_pm_ops stm32_adc_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(stm32_adc_suspend, stm32_adc_resume)
-	SET_RUNTIME_PM_OPS(stm32_adc_runtime_suspend, stm32_adc_runtime_resume,
-			   NULL)
+	SYSTEM_SLEEP_PM_OPS(stm32_adc_suspend, stm32_adc_resume)
+	RUNTIME_PM_OPS(stm32_adc_runtime_suspend, stm32_adc_runtime_resume,
+		       NULL)
 };
 
 static const struct stm32_adc_cfg stm32f4_adc_cfg = {
@@ -2044,6 +2428,7 @@ static const struct stm32_adc_cfg stm32f4_adc_cfg = {
 	.start_conv = stm32f4_adc_start_conv,
 	.stop_conv = stm32f4_adc_stop_conv,
 	.smp_cycles = stm32f4_adc_smp_cycles,
+	.irq_clear = stm32f4_adc_irq_clear,
 };
 
 static const struct stm32_adc_cfg stm32h7_adc_cfg = {
@@ -2055,10 +2440,11 @@ static const struct stm32_adc_cfg stm32h7_adc_cfg = {
 	.prepare = stm32h7_adc_prepare,
 	.unprepare = stm32h7_adc_unprepare,
 	.smp_cycles = stm32h7_adc_smp_cycles,
+	.irq_clear = stm32h7_adc_irq_clear,
 };
 
 static const struct stm32_adc_cfg stm32mp1_adc_cfg = {
-	.regs = &stm32h7_adc_regspec,
+	.regs = &stm32mp1_adc_regspec,
 	.adc_info = &stm32h7_adc_info,
 	.trigs = stm32h7_adc_trigs,
 	.has_vregready = true,
@@ -2067,6 +2453,8 @@ static const struct stm32_adc_cfg stm32mp1_adc_cfg = {
 	.prepare = stm32h7_adc_prepare,
 	.unprepare = stm32h7_adc_unprepare,
 	.smp_cycles = stm32h7_adc_smp_cycles,
+	.irq_clear = stm32h7_adc_irq_clear,
+	.ts_vrefint_ns = 4300,
 };
 
 static const struct of_device_id stm32_adc_of_match[] = {
@@ -2083,7 +2471,7 @@ static struct platform_driver stm32_adc_driver = {
 	.driver = {
 		.name = "stm32-adc",
 		.of_match_table = stm32_adc_of_match,
-		.pm = &stm32_adc_pm_ops,
+		.pm = pm_ptr(&stm32_adc_pm_ops),
 	},
 };
 module_platform_driver(stm32_adc_driver);
diff --git a/drivers/iio/adc/stm32-dfsdm-adc.c b/drivers/iio/adc/stm32-dfsdm-adc.c
index 76a60d93fe23..6d21ea84fa82 100644
--- a/drivers/iio/adc/stm32-dfsdm-adc.c
+++ b/drivers/iio/adc/stm32-dfsdm-adc.c
@@ -62,7 +62,7 @@ enum sd_converter_type {
 
 struct stm32_dfsdm_dev_data {
 	int type;
-	int (*init)(struct iio_dev *indio_dev);
+	int (*init)(struct device *dev, struct iio_dev *indio_dev);
 	unsigned int num_channels;
 	const struct regmap_config *regmap_cfg;
 };
@@ -198,7 +198,7 @@ static int stm32_dfsdm_compute_osrs(struct stm32_dfsdm_filter *fl,
 	unsigned int p = fl->ford;	/* filter order (ford) */
 	struct stm32_dfsdm_filter_osr *flo = &fl->flo[fast];
 
-	pr_debug("%s: Requested oversampling: %d\n",  __func__, oversamp);
+	pr_debug("Requested oversampling: %d\n", oversamp);
 	/*
 	 * This function tries to compute filter oversampling and integrator
 	 * oversampling, base on oversampling ratio requested by user.
@@ -293,9 +293,10 @@ static int stm32_dfsdm_compute_osrs(struct stm32_dfsdm_filter *fl,
 					max >>= flo->rshift;
 				}
 				flo->max = (s32)max;
+				flo->bits = bits;
 
-				pr_debug("%s: fast %d, fosr %d, iosr %d, res 0x%llx/%d bits, rshift %d, lshift %d\n",
-					 __func__, fast, flo->fosr, flo->iosr,
+				pr_debug("fast %d, fosr %d, iosr %d, res 0x%llx/%d bits, rshift %d, lshift %d\n",
+					 fast, flo->fosr, flo->iosr,
 					 flo->res, bits, flo->rshift,
 					 flo->lshift);
 			}
@@ -330,9 +331,9 @@ static int stm32_dfsdm_compute_all_osrs(struct iio_dev *indio_dev,
 	return 0;
 }
 
-static int stm32_dfsdm_start_channel(struct stm32_dfsdm_adc *adc)
+static int stm32_dfsdm_start_channel(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	const struct iio_chan_spec *chan;
 	unsigned int bit;
@@ -350,9 +351,9 @@ static int stm32_dfsdm_start_channel(struct stm32_dfsdm_adc *adc)
 	return 0;
 }
 
-static void stm32_dfsdm_stop_channel(struct stm32_dfsdm_adc *adc)
+static void stm32_dfsdm_stop_channel(struct iio_dev *indio_dev)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	const struct iio_chan_spec *chan;
 	unsigned int bit;
@@ -418,11 +419,11 @@ static void stm32_dfsdm_stop_filter(struct stm32_dfsdm *dfsdm,
 			   DFSDM_CR1_DFEN_MASK, DFSDM_CR1_DFEN(0));
 }
 
-static int stm32_dfsdm_filter_set_trig(struct stm32_dfsdm_adc *adc,
+static int stm32_dfsdm_filter_set_trig(struct iio_dev *indio_dev,
 				       unsigned int fl_id,
 				       struct iio_trigger *trig)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	u32 jextsel = 0, jexten = STM32_DFSDM_JEXTEN_DISABLED;
 	int ret;
@@ -447,11 +448,11 @@ static int stm32_dfsdm_filter_set_trig(struct stm32_dfsdm_adc *adc,
 	return 0;
 }
 
-static int stm32_dfsdm_channels_configure(struct stm32_dfsdm_adc *adc,
+static int stm32_dfsdm_channels_configure(struct iio_dev *indio_dev,
 					  unsigned int fl_id,
 					  struct iio_trigger *trig)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	struct stm32_dfsdm_filter *fl = &adc->dfsdm->fl_list[fl_id];
 	struct stm32_dfsdm_filter_osr *flo = &fl->flo[0];
@@ -465,8 +466,7 @@ static int stm32_dfsdm_channels_configure(struct stm32_dfsdm_adc *adc,
 	 * In continuous mode, use fast mode configuration,
 	 * if it provides a better resolution.
 	 */
-	if (adc->nconv == 1 && !trig &&
-	    (indio_dev->currentmode & INDIO_BUFFER_SOFTWARE)) {
+	if (adc->nconv == 1 && !trig && iio_buffer_enabled(indio_dev)) {
 		if (fl->flo[1].res >= fl->flo[0].res) {
 			fl->fast = 1;
 			flo = &fl->flo[1];
@@ -476,6 +476,9 @@ static int stm32_dfsdm_channels_configure(struct stm32_dfsdm_adc *adc,
 	if (!flo->res)
 		return -EINVAL;
 
+	dev_dbg(&indio_dev->dev, "Samples actual resolution: %d bits",
+		min(flo->bits, (u32)DFSDM_DATA_RES - 1));
+
 	for_each_set_bit(bit, &adc->smask,
 			 sizeof(adc->smask) * BITS_PER_BYTE) {
 		chan = indio_dev->channels + bit;
@@ -491,11 +494,11 @@ static int stm32_dfsdm_channels_configure(struct stm32_dfsdm_adc *adc,
 	return 0;
 }
 
-static int stm32_dfsdm_filter_configure(struct stm32_dfsdm_adc *adc,
+static int stm32_dfsdm_filter_configure(struct iio_dev *indio_dev,
 					unsigned int fl_id,
 					struct iio_trigger *trig)
 {
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	struct stm32_dfsdm_filter *fl = &adc->dfsdm->fl_list[fl_id];
 	struct stm32_dfsdm_filter_osr *flo = &fl->flo[fl->fast];
@@ -521,7 +524,7 @@ static int stm32_dfsdm_filter_configure(struct stm32_dfsdm_adc *adc,
 	if (ret)
 		return ret;
 
-	ret = stm32_dfsdm_filter_set_trig(adc, fl_id, trig);
+	ret = stm32_dfsdm_filter_set_trig(indio_dev, fl_id, trig);
 	if (ret)
 		return ret;
 
@@ -558,7 +561,7 @@ static int stm32_dfsdm_filter_configure(struct stm32_dfsdm_adc *adc,
 		cr1 = DFSDM_CR1_RCH(chan->channel);
 
 		/* Continuous conversions triggered by SPI clk in buffer mode */
-		if (indio_dev->currentmode & INDIO_BUFFER_SOFTWARE)
+		if (iio_buffer_enabled(indio_dev))
 			cr1 |= DFSDM_CR1_RCONT(1);
 
 		cr1 |= DFSDM_CR1_RSYNC(fl->sync_mode);
@@ -729,21 +732,22 @@ static ssize_t dfsdm_adc_audio_set_spiclk(struct iio_dev *indio_dev,
 	return len;
 }
 
-static int stm32_dfsdm_start_conv(struct stm32_dfsdm_adc *adc,
+static int stm32_dfsdm_start_conv(struct iio_dev *indio_dev,
 				  struct iio_trigger *trig)
 {
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	int ret;
 
-	ret = stm32_dfsdm_channels_configure(adc, adc->fl_id, trig);
+	ret = stm32_dfsdm_channels_configure(indio_dev, adc->fl_id, trig);
 	if (ret < 0)
 		return ret;
 
-	ret = stm32_dfsdm_start_channel(adc);
+	ret = stm32_dfsdm_start_channel(indio_dev);
 	if (ret < 0)
 		return ret;
 
-	ret = stm32_dfsdm_filter_configure(adc, adc->fl_id, trig);
+	ret = stm32_dfsdm_filter_configure(indio_dev, adc->fl_id, trig);
 	if (ret < 0)
 		goto stop_channels;
 
@@ -757,13 +761,14 @@ filter_unconfigure:
 	regmap_update_bits(regmap, DFSDM_CR1(adc->fl_id),
 			   DFSDM_CR1_CFG_MASK, 0);
 stop_channels:
-	stm32_dfsdm_stop_channel(adc);
+	stm32_dfsdm_stop_channel(indio_dev);
 
 	return ret;
 }
 
-static void stm32_dfsdm_stop_conv(struct stm32_dfsdm_adc *adc)
+static void stm32_dfsdm_stop_conv(struct iio_dev *indio_dev)
 {
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 
 	stm32_dfsdm_stop_filter(adc->dfsdm, adc->fl_id);
@@ -771,7 +776,7 @@ static void stm32_dfsdm_stop_conv(struct stm32_dfsdm_adc *adc)
 	regmap_update_bits(regmap, DFSDM_CR1(adc->fl_id),
 			   DFSDM_CR1_CFG_MASK, 0);
 
-	stm32_dfsdm_stop_channel(adc);
+	stm32_dfsdm_stop_channel(indio_dev);
 }
 
 static int stm32_dfsdm_set_watermark(struct iio_dev *indio_dev,
@@ -858,7 +863,7 @@ static void stm32_dfsdm_dma_buffer_done(void *data)
 	 * support in IIO.
 	 */
 
-	dev_dbg(&indio_dev->dev, "%s: pos = %d, available = %d\n", __func__,
+	dev_dbg(&indio_dev->dev, "pos = %d, available = %d\n",
 		adc->bufi, available);
 	old_pos = adc->bufi;
 
@@ -912,7 +917,7 @@ static int stm32_dfsdm_adc_dma_start(struct iio_dev *indio_dev)
 	if (!adc->dma_chan)
 		return -EINVAL;
 
-	dev_dbg(&indio_dev->dev, "%s size=%d watermark=%d\n", __func__,
+	dev_dbg(&indio_dev->dev, "size=%d watermark=%d\n",
 		adc->buf_sz, adc->buf_sz / 2);
 
 	if (adc->nconv == 1 && !indio_dev->trig)
@@ -993,7 +998,7 @@ static int stm32_dfsdm_update_scan_mode(struct iio_dev *indio_dev,
 	return 0;
 }
 
-static int __stm32_dfsdm_postenable(struct iio_dev *indio_dev)
+static int stm32_dfsdm_postenable(struct iio_dev *indio_dev)
 {
 	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	int ret;
@@ -1017,7 +1022,7 @@ static int __stm32_dfsdm_postenable(struct iio_dev *indio_dev)
 		goto stop_dfsdm;
 	}
 
-	ret = stm32_dfsdm_start_conv(adc, indio_dev->trig);
+	ret = stm32_dfsdm_start_conv(indio_dev, indio_dev->trig);
 	if (ret) {
 		dev_err(&indio_dev->dev, "Can't start conversion\n");
 		goto err_stop_dma;
@@ -1036,34 +1041,11 @@ err_stop_hwc:
 	return ret;
 }
 
-static int stm32_dfsdm_postenable(struct iio_dev *indio_dev)
-{
-	int ret;
-
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
-		ret = iio_triggered_buffer_postenable(indio_dev);
-		if (ret < 0)
-			return ret;
-	}
-
-	ret = __stm32_dfsdm_postenable(indio_dev);
-	if (ret < 0)
-		goto err_predisable;
-
-	return 0;
-
-err_predisable:
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		iio_triggered_buffer_predisable(indio_dev);
-
-	return ret;
-}
-
-static void __stm32_dfsdm_predisable(struct iio_dev *indio_dev)
+static int stm32_dfsdm_predisable(struct iio_dev *indio_dev)
 {
 	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 
-	stm32_dfsdm_stop_conv(adc);
+	stm32_dfsdm_stop_conv(indio_dev);
 
 	stm32_dfsdm_adc_dma_stop(indio_dev);
 
@@ -1071,14 +1053,6 @@ static void __stm32_dfsdm_predisable(struct iio_dev *indio_dev)
 
 	if (adc->hwc)
 		iio_hw_consumer_disable(adc->hwc);
-}
-
-static int stm32_dfsdm_predisable(struct iio_dev *indio_dev)
-{
-	__stm32_dfsdm_predisable(indio_dev);
-
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		iio_triggered_buffer_predisable(indio_dev);
 
 	return 0;
 }
@@ -1159,7 +1133,7 @@ static int stm32_dfsdm_single_conv(struct iio_dev *indio_dev,
 
 	adc->nconv = 1;
 	adc->smask = BIT(chan->scan_index);
-	ret = stm32_dfsdm_start_conv(adc, NULL);
+	ret = stm32_dfsdm_start_conv(indio_dev, NULL);
 	if (ret < 0) {
 		regmap_update_bits(adc->dfsdm->regmap, DFSDM_CR2(adc->fl_id),
 				   DFSDM_CR2_REOCIE_MASK, DFSDM_CR2_REOCIE(0));
@@ -1180,7 +1154,7 @@ static int stm32_dfsdm_single_conv(struct iio_dev *indio_dev,
 	else
 		ret = IIO_VAL_INT;
 
-	stm32_dfsdm_stop_conv(adc);
+	stm32_dfsdm_stop_conv(indio_dev);
 
 	stm32_dfsdm_process_data(adc, res);
 
@@ -1313,8 +1287,8 @@ static const struct iio_info stm32_dfsdm_info_adc = {
 
 static irqreturn_t stm32_dfsdm_irq(int irq, void *arg)
 {
-	struct stm32_dfsdm_adc *adc = arg;
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = arg;
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	struct regmap *regmap = adc->dfsdm->regmap;
 	unsigned int status, int_en;
 
@@ -1365,11 +1339,12 @@ static void stm32_dfsdm_dma_release(struct iio_dev *indio_dev)
 	}
 }
 
-static int stm32_dfsdm_dma_request(struct iio_dev *indio_dev)
+static int stm32_dfsdm_dma_request(struct device *dev,
+				   struct iio_dev *indio_dev)
 {
 	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 
-	adc->dma_chan = dma_request_chan(&indio_dev->dev, "rx");
+	adc->dma_chan = dma_request_chan(dev, "rx");
 	if (IS_ERR(adc->dma_chan)) {
 		int ret = PTR_ERR(adc->dma_chan);
 
@@ -1425,7 +1400,7 @@ static int stm32_dfsdm_adc_chan_init_one(struct iio_dev *indio_dev,
 					  &adc->dfsdm->ch_list[ch->channel]);
 }
 
-static int stm32_dfsdm_audio_init(struct iio_dev *indio_dev)
+static int stm32_dfsdm_audio_init(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct iio_chan_spec *ch;
 	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
@@ -1452,10 +1427,10 @@ static int stm32_dfsdm_audio_init(struct iio_dev *indio_dev)
 	indio_dev->num_channels = 1;
 	indio_dev->channels = ch;
 
-	return stm32_dfsdm_dma_request(indio_dev);
+	return stm32_dfsdm_dma_request(dev, indio_dev);
 }
 
-static int stm32_dfsdm_adc_init(struct iio_dev *indio_dev)
+static int stm32_dfsdm_adc_init(struct device *dev, struct iio_dev *indio_dev)
 {
 	struct iio_chan_spec *ch;
 	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
@@ -1499,17 +1474,13 @@ static int stm32_dfsdm_adc_init(struct iio_dev *indio_dev)
 	init_completion(&adc->completion);
 
 	/* Optionally request DMA */
-	ret = stm32_dfsdm_dma_request(indio_dev);
+	ret = stm32_dfsdm_dma_request(dev, indio_dev);
 	if (ret) {
-		if (ret != -ENODEV) {
-			if (ret != -EPROBE_DEFER)
-				dev_err(&indio_dev->dev,
-					"DMA channel request failed with %d\n",
-					ret);
-			return ret;
-		}
+		if (ret != -ENODEV)
+			return dev_err_probe(dev, ret,
+					     "DMA channel request failed with\n");
 
-		dev_dbg(&indio_dev->dev, "No DMA support\n");
+		dev_dbg(dev, "No DMA support\n");
 		return 0;
 	}
 
@@ -1570,11 +1541,10 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
 	adc = iio_priv(iio);
 	adc->dfsdm = dev_get_drvdata(dev->parent);
 
-	iio->dev.parent = dev;
 	iio->dev.of_node = np;
 	iio->modes = INDIO_DIRECT_MODE;
 
-	platform_set_drvdata(pdev, adc);
+	platform_set_drvdata(pdev, iio);
 
 	ret = of_property_read_u32(dev->of_node, "reg", &adc->fl_id);
 	if (ret != 0 || adc->fl_id >= adc->dfsdm->num_fls) {
@@ -1603,7 +1573,7 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
 		return irq;
 
 	ret = devm_request_irq(dev, irq, stm32_dfsdm_irq,
-			       0, pdev->name, adc);
+			       0, pdev->name, iio);
 	if (ret < 0) {
 		dev_err(dev, "Failed to request IRQ\n");
 		return ret;
@@ -1622,7 +1592,7 @@ static int stm32_dfsdm_adc_probe(struct platform_device *pdev)
 		adc->dfsdm->fl_list[adc->fl_id].sync_mode = val;
 
 	adc->dev_data = dev_data;
-	ret = dev_data->init(iio);
+	ret = dev_data->init(dev, iio);
 	if (ret < 0)
 		return ret;
 
@@ -1650,8 +1620,8 @@ err_cleanup:
 
 static int stm32_dfsdm_adc_remove(struct platform_device *pdev)
 {
-	struct stm32_dfsdm_adc *adc = platform_get_drvdata(pdev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 
 	if (adc->dev_data->type == DFSDM_AUDIO)
 		of_platform_depopulate(&pdev->dev);
@@ -1661,21 +1631,20 @@ static int stm32_dfsdm_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused stm32_dfsdm_adc_suspend(struct device *dev)
+static int stm32_dfsdm_adc_suspend(struct device *dev)
 {
-	struct stm32_dfsdm_adc *adc = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 
 	if (iio_buffer_enabled(indio_dev))
-		__stm32_dfsdm_predisable(indio_dev);
+		stm32_dfsdm_predisable(indio_dev);
 
 	return 0;
 }
 
-static int __maybe_unused stm32_dfsdm_adc_resume(struct device *dev)
+static int stm32_dfsdm_adc_resume(struct device *dev)
 {
-	struct stm32_dfsdm_adc *adc = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(adc);
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct stm32_dfsdm_adc *adc = iio_priv(indio_dev);
 	const struct iio_chan_spec *chan;
 	struct stm32_dfsdm_channel *ch;
 	int i, ret;
@@ -1690,19 +1659,20 @@ static int __maybe_unused stm32_dfsdm_adc_resume(struct device *dev)
 	}
 
 	if (iio_buffer_enabled(indio_dev))
-		__stm32_dfsdm_postenable(indio_dev);
+		stm32_dfsdm_postenable(indio_dev);
 
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(stm32_dfsdm_adc_pm_ops,
-			 stm32_dfsdm_adc_suspend, stm32_dfsdm_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(stm32_dfsdm_adc_pm_ops,
+				stm32_dfsdm_adc_suspend,
+				stm32_dfsdm_adc_resume);
 
 static struct platform_driver stm32_dfsdm_adc_driver = {
 	.driver = {
 		.name = "stm32-dfsdm-adc",
 		.of_match_table = stm32_dfsdm_adc_match,
-		.pm = &stm32_dfsdm_adc_pm_ops,
+		.pm = pm_sleep_ptr(&stm32_dfsdm_adc_pm_ops),
 	},
 	.probe = stm32_dfsdm_adc_probe,
 	.remove = stm32_dfsdm_adc_remove,
diff --git a/drivers/iio/adc/stm32-dfsdm-core.c b/drivers/iio/adc/stm32-dfsdm-core.c
index 26e2011c5868..a3d4de6ba4c2 100644
--- a/drivers/iio/adc/stm32-dfsdm-core.c
+++ b/drivers/iio/adc/stm32-dfsdm-core.c
@@ -117,8 +117,7 @@ static void stm32_dfsdm_clk_disable_unprepare(struct stm32_dfsdm *dfsdm)
 {
 	struct dfsdm_priv *priv = to_stm32_dfsdm_priv(dfsdm);
 
-	if (priv->aclk)
-		clk_disable_unprepare(priv->aclk);
+	clk_disable_unprepare(priv->aclk);
 	clk_disable_unprepare(priv->clk);
 }
 
@@ -136,11 +135,9 @@ int stm32_dfsdm_start_dfsdm(struct stm32_dfsdm *dfsdm)
 	int ret;
 
 	if (atomic_inc_return(&priv->n_active_ch) == 1) {
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0) {
-			pm_runtime_put_noidle(dev);
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret < 0)
 			goto error_ret;
-		}
 
 		/* select clock source, e.g. 0 for "dfsdm" or 1 for "audio" */
 		clk_src = priv->aclk ? 1 : 0;
@@ -226,16 +223,13 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev,
 	if (!node)
 		return -EINVAL;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if (!res) {
-		dev_err(&pdev->dev, "Failed to get memory resource\n");
-		return -ENODEV;
-	}
-	priv->dfsdm.phys_base = res->start;
-	priv->dfsdm.base = devm_ioremap_resource(&pdev->dev, res);
+	priv->dfsdm.base = devm_platform_get_and_ioremap_resource(pdev, 0,
+							&res);
 	if (IS_ERR(priv->dfsdm.base))
 		return PTR_ERR(priv->dfsdm.base);
 
+	priv->dfsdm.phys_base = res->start;
+
 	/*
 	 * "dfsdm" clock is mandatory for DFSDM peripheral clocking.
 	 * "dfsdm" or "audio" clocks can be used as source clock for
@@ -243,12 +237,9 @@ static int stm32_dfsdm_parse_of(struct platform_device *pdev,
 	 * on use case.
 	 */
 	priv->clk = devm_clk_get(&pdev->dev, "dfsdm");
-	if (IS_ERR(priv->clk)) {
-		ret = PTR_ERR(priv->clk);
-		if (ret != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "Failed to get clock (%d)\n", ret);
-		return ret;
-	}
+	if (IS_ERR(priv->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(priv->clk),
+				     "Failed to get clock\n");
 
 	priv->aclk = devm_clk_get(&pdev->dev, "audio");
 	if (IS_ERR(priv->aclk))
@@ -390,7 +381,7 @@ static int stm32_dfsdm_core_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused stm32_dfsdm_core_suspend(struct device *dev)
+static int stm32_dfsdm_core_suspend(struct device *dev)
 {
 	struct stm32_dfsdm *dfsdm = dev_get_drvdata(dev);
 	struct dfsdm_priv *priv = to_stm32_dfsdm_priv(dfsdm);
@@ -406,7 +397,7 @@ static int __maybe_unused stm32_dfsdm_core_suspend(struct device *dev)
 	return pinctrl_pm_select_sleep_state(dev);
 }
 
-static int __maybe_unused stm32_dfsdm_core_resume(struct device *dev)
+static int stm32_dfsdm_core_resume(struct device *dev)
 {
 	struct stm32_dfsdm *dfsdm = dev_get_drvdata(dev);
 	struct dfsdm_priv *priv = to_stm32_dfsdm_priv(dfsdm);
@@ -423,7 +414,7 @@ static int __maybe_unused stm32_dfsdm_core_resume(struct device *dev)
 	return pm_runtime_force_resume(dev);
 }
 
-static int __maybe_unused stm32_dfsdm_core_runtime_suspend(struct device *dev)
+static int stm32_dfsdm_core_runtime_suspend(struct device *dev)
 {
 	struct stm32_dfsdm *dfsdm = dev_get_drvdata(dev);
 
@@ -432,7 +423,7 @@ static int __maybe_unused stm32_dfsdm_core_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused stm32_dfsdm_core_runtime_resume(struct device *dev)
+static int stm32_dfsdm_core_runtime_resume(struct device *dev)
 {
 	struct stm32_dfsdm *dfsdm = dev_get_drvdata(dev);
 
@@ -440,11 +431,10 @@ static int __maybe_unused stm32_dfsdm_core_runtime_resume(struct device *dev)
 }
 
 static const struct dev_pm_ops stm32_dfsdm_core_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(stm32_dfsdm_core_suspend,
-				stm32_dfsdm_core_resume)
-	SET_RUNTIME_PM_OPS(stm32_dfsdm_core_runtime_suspend,
-			   stm32_dfsdm_core_runtime_resume,
-			   NULL)
+	SYSTEM_SLEEP_PM_OPS(stm32_dfsdm_core_suspend, stm32_dfsdm_core_resume)
+	RUNTIME_PM_OPS(stm32_dfsdm_core_runtime_suspend,
+		       stm32_dfsdm_core_runtime_resume,
+		       NULL)
 };
 
 static struct platform_driver stm32_dfsdm_driver = {
@@ -453,7 +443,7 @@ static struct platform_driver stm32_dfsdm_driver = {
 	.driver = {
 		.name = "stm32-dfsdm",
 		.of_match_table = stm32_dfsdm_of_match,
-		.pm = &stm32_dfsdm_core_pm_ops,
+		.pm = pm_ptr(&stm32_dfsdm_core_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/stm32-dfsdm.h b/drivers/iio/adc/stm32-dfsdm.h
index 5dbdae4ed881..4afc1f528b78 100644
--- a/drivers/iio/adc/stm32-dfsdm.h
+++ b/drivers/iio/adc/stm32-dfsdm.h
@@ -249,6 +249,7 @@ enum stm32_dfsdm_sinc_order {
  * @rshift: output sample right shift (hardware shift)
  * @lshift: output sample left shift (software shift)
  * @res: output sample resolution
+ * @bits: output sample resolution in bits
  * @max: output sample maximum positive value
  */
 struct stm32_dfsdm_filter_osr {
@@ -257,6 +258,7 @@ struct stm32_dfsdm_filter_osr {
 	unsigned int rshift;
 	unsigned int lshift;
 	u64 res;
+	u32 bits;
 	s32 max;
 };
 
diff --git a/drivers/iio/adc/stmpe-adc.c b/drivers/iio/adc/stmpe-adc.c
index 0f88048ea48f..67518e460e05 100644
--- a/drivers/iio/adc/stmpe-adc.c
+++ b/drivers/iio/adc/stmpe-adc.c
@@ -61,7 +61,7 @@ struct stmpe_adc {
 static int stmpe_read_voltage(struct stmpe_adc *info,
 		struct iio_chan_spec const *chan, int *val)
 {
-	long ret;
+	unsigned long ret;
 
 	mutex_lock(&info->lock);
 
@@ -79,7 +79,7 @@ static int stmpe_read_voltage(struct stmpe_adc *info,
 
 	ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);
 
-	if (ret <= 0) {
+	if (ret == 0) {
 		stmpe_reg_write(info->stmpe, STMPE_REG_ADC_INT_STA,
 				STMPE_ADC_CH(info->channel));
 		mutex_unlock(&info->lock);
@@ -96,7 +96,7 @@ static int stmpe_read_voltage(struct stmpe_adc *info,
 static int stmpe_read_temp(struct stmpe_adc *info,
 		struct iio_chan_spec const *chan, int *val)
 {
-	long ret;
+	unsigned long ret;
 
 	mutex_lock(&info->lock);
 
@@ -114,7 +114,7 @@ static int stmpe_read_temp(struct stmpe_adc *info,
 
 	ret = wait_for_completion_timeout(&info->completion, STMPE_ADC_TIMEOUT);
 
-	if (ret <= 0) {
+	if (ret == 0) {
 		mutex_unlock(&info->lock);
 		return -ETIMEDOUT;
 	}
@@ -256,6 +256,7 @@ static int stmpe_adc_probe(struct platform_device *pdev)
 	struct stmpe_adc *info;
 	struct device_node *np;
 	u32 norequest_mask = 0;
+	unsigned long bits;
 	int irq_temp, irq_adc;
 	int num_chan = 0;
 	int i = 0;
@@ -297,7 +298,6 @@ static int stmpe_adc_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name		= dev_name(&pdev->dev);
-	indio_dev->dev.parent	= &pdev->dev;
 	indio_dev->info		= &stmpe_adc_iio_info;
 	indio_dev->modes	= INDIO_DIRECT_MODE;
 
@@ -310,8 +310,8 @@ static int stmpe_adc_probe(struct platform_device *pdev)
 
 	of_property_read_u32(np, "st,norequest-mask", &norequest_mask);
 
-	for_each_clear_bit(i, (unsigned long *) &norequest_mask,
-			   (STMPE_ADC_LAST_NR + 1)) {
+	bits = norequest_mask;
+	for_each_clear_bit(i, &bits, (STMPE_ADC_LAST_NR + 1)) {
 		stmpe_adc_voltage_chan(&info->stmpe_adc_iio_channels[num_chan], i);
 		num_chan++;
 	}
@@ -333,7 +333,7 @@ static int stmpe_adc_probe(struct platform_device *pdev)
 	return devm_iio_device_register(&pdev->dev, indio_dev);
 }
 
-static int __maybe_unused stmpe_adc_resume(struct device *dev)
+static int stmpe_adc_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct stmpe_adc *info = iio_priv(indio_dev);
@@ -343,23 +343,24 @@ static int __maybe_unused stmpe_adc_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(stmpe_adc_pm_ops, NULL, stmpe_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(stmpe_adc_pm_ops, NULL, stmpe_adc_resume);
+
+static const struct of_device_id stmpe_adc_ids[] = {
+	{ .compatible = "st,stmpe-adc", },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, stmpe_adc_ids);
 
 static struct platform_driver stmpe_adc_driver = {
 	.probe		= stmpe_adc_probe,
 	.driver		= {
 		.name	= "stmpe-adc",
-		.pm	= &stmpe_adc_pm_ops,
+		.pm	= pm_sleep_ptr(&stmpe_adc_pm_ops),
+		.of_match_table = stmpe_adc_ids,
 	},
 };
 module_platform_driver(stmpe_adc_driver);
 
-static const struct of_device_id stmpe_adc_ids[] = {
-	{ .compatible = "st,stmpe-adc", },
-	{ },
-};
-MODULE_DEVICE_TABLE(of, stmpe_adc_ids);
-
 MODULE_AUTHOR("Stefan Agner <stefan.agner@toradex.com>");
 MODULE_DESCRIPTION("STMPEXXX ADC driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/sun4i-gpadc-iio.c b/drivers/iio/adc/sun4i-gpadc-iio.c
index 176e1cb4abb1..a6ade70dedf8 100644
--- a/drivers/iio/adc/sun4i-gpadc-iio.c
+++ b/drivers/iio/adc/sun4i-gpadc-iio.c
@@ -412,9 +412,9 @@ static int sun4i_gpadc_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static int sun4i_gpadc_get_temp(void *data, int *temp)
+static int sun4i_gpadc_get_temp(struct thermal_zone_device *tz, int *temp)
 {
-	struct sun4i_gpadc_iio *info = data;
+	struct sun4i_gpadc_iio *info = tz->devdata;
 	int val, scale, offset;
 
 	if (sun4i_gpadc_temp_read(info->indio_dev, &val))
@@ -428,7 +428,7 @@ static int sun4i_gpadc_get_temp(void *data, int *temp)
 	return 0;
 }
 
-static const struct thermal_zone_of_device_ops sun4i_ts_tz_ops = {
+static const struct thermal_zone_device_ops sun4i_ts_tz_ops = {
 	.get_temp = &sun4i_gpadc_get_temp,
 };
 
@@ -470,7 +470,8 @@ static int sun4i_irq_init(struct platform_device *pdev, const char *name,
 	}
 
 	*irq = ret;
-	ret = devm_request_any_context_irq(&pdev->dev, *irq, handler, 0,
+	ret = devm_request_any_context_irq(&pdev->dev, *irq, handler,
+					   IRQF_NO_AUTOEN,
 					   devname, info);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "could not request %s interrupt: %d\n",
@@ -478,7 +479,6 @@ static int sun4i_irq_init(struct platform_device *pdev, const char *name,
 		return ret;
 	}
 
-	disable_irq(*irq);
 	atomic_set(atomic, 0);
 
 	return 0;
@@ -496,7 +496,6 @@ static int sun4i_gpadc_probe_dt(struct platform_device *pdev,
 				struct iio_dev *indio_dev)
 {
 	struct sun4i_gpadc_iio *info = iio_priv(indio_dev);
-	struct resource *mem;
 	void __iomem *base;
 	int ret;
 
@@ -508,8 +507,7 @@ static int sun4i_gpadc_probe_dt(struct platform_device *pdev,
 	indio_dev->num_channels = ARRAY_SIZE(sun8i_a33_gpadc_channels);
 	indio_dev->channels = sun8i_a33_gpadc_channels;
 
-	mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	base = devm_ioremap_resource(&pdev->dev, mem);
+	base = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(base))
 		return PTR_ERR(base);
 
@@ -621,8 +619,6 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
 	info->indio_dev = indio_dev;
 	init_completion(&info->completion);
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &sun4i_gpadc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
@@ -641,9 +637,9 @@ static int sun4i_gpadc_probe(struct platform_device *pdev)
 	pm_runtime_enable(&pdev->dev);
 
 	if (IS_ENABLED(CONFIG_THERMAL_OF)) {
-		info->tzd = thermal_zone_of_sensor_register(info->sensor_device,
-							    0, info,
-							    &sun4i_ts_tz_ops);
+		info->tzd = devm_thermal_of_zone_register(info->sensor_device,
+							  0, info,
+							  &sun4i_ts_tz_ops);
 		/*
 		 * Do not fail driver probing when failing to register in
 		 * thermal because no thermal DT node is found.
@@ -685,8 +681,6 @@ static int sun4i_gpadc_remove(struct platform_device *pdev)
 	if (!IS_ENABLED(CONFIG_THERMAL_OF))
 		return 0;
 
-	thermal_zone_of_sensor_unregister(info->sensor_device, info->tzd);
-
 	if (!info->no_irq)
 		iio_map_array_unregister(indio_dev);
 
diff --git a/drivers/iio/adc/ti-adc081c.c b/drivers/iio/adc/ti-adc081c.c
index 0235863ff77b..bd48b073e720 100644
--- a/drivers/iio/adc/ti-adc081c.c
+++ b/drivers/iio/adc/ti-adc081c.c
@@ -6,9 +6,9 @@
  * Copyright (C) 2016 Intel
  *
  * Datasheets:
- *	http://www.ti.com/lit/ds/symlink/adc081c021.pdf
- *	http://www.ti.com/lit/ds/symlink/adc101c021.pdf
- *	http://www.ti.com/lit/ds/symlink/adc121c021.pdf
+ *	https://www.ti.com/lit/ds/symlink/adc081c021.pdf
+ *	https://www.ti.com/lit/ds/symlink/adc101c021.pdf
+ *	https://www.ti.com/lit/ds/symlink/adc121c021.pdf
  *
  * The devices have a very similar interface and differ mostly in the number of
  * bits handled. For the 8-bit and 10-bit models the least-significant 4 or 2
@@ -18,8 +18,8 @@
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/acpi.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -33,6 +33,12 @@ struct adc081c {
 
 	/* 8, 10 or 12 */
 	int bits;
+
+	/* Ensure natural alignment of buffer elements */
+	struct {
+		u16 channel;
+		s64 ts __aligned(8);
+	} scan;
 };
 
 #define REG_CONV_RES 0x00
@@ -128,42 +134,39 @@ static irqreturn_t adc081c_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adc081c *data = iio_priv(indio_dev);
-	u16 buf[8]; /* 2 bytes data + 6 bytes padding + 8 bytes timestamp */
 	int ret;
 
 	ret = i2c_smbus_read_word_swapped(data->i2c, REG_CONV_RES);
 	if (ret < 0)
 		goto out;
-	buf[0] = ret;
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	data->scan.channel = ret;
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   iio_get_time_ns(indio_dev));
 out:
 	iio_trigger_notify_done(indio_dev->trig);
 	return IRQ_HANDLED;
 }
 
+static void adc081c_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int adc081c_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
 	struct iio_dev *iio;
 	struct adc081c *adc;
-	struct adcxx1c_model *model;
+	const struct adcxx1c_model *model;
 	int err;
 
 	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
 		return -EOPNOTSUPP;
 
-	if (ACPI_COMPANION(&client->dev)) {
-		const struct acpi_device_id *ad_id;
-
-		ad_id = acpi_match_device(client->dev.driver->acpi_match_table,
-					  &client->dev);
-		if (!ad_id)
-			return -ENODEV;
-		model = &adcxx1c_models[ad_id->driver_data];
-	} else {
+	if (dev_fwnode(&client->dev))
+		model = device_get_match_data(&client->dev);
+	else
 		model = &adcxx1c_models[id->driver_data];
-	}
 
 	iio = devm_iio_device_alloc(&client->dev, sizeof(*adc));
 	if (!iio)
@@ -181,8 +184,11 @@ static int adc081c_probe(struct i2c_client *client,
 	if (err < 0)
 		return err;
 
-	iio->dev.parent = &client->dev;
-	iio->dev.of_node = client->dev.of_node;
+	err = devm_add_action_or_reset(&client->dev, adc081c_reg_disable,
+				       adc->ref);
+	if (err)
+		return err;
+
 	iio->name = dev_name(&client->dev);
 	iio->modes = INDIO_DIRECT_MODE;
 	iio->info = &adc081c_info;
@@ -190,38 +196,14 @@ static int adc081c_probe(struct i2c_client *client,
 	iio->channels = model->channels;
 	iio->num_channels = ADC081C_NUM_CHANNELS;
 
-	err = iio_triggered_buffer_setup(iio, NULL, adc081c_trigger_handler, NULL);
+	err = devm_iio_triggered_buffer_setup(&client->dev, iio, NULL,
+					      adc081c_trigger_handler, NULL);
 	if (err < 0) {
 		dev_err(&client->dev, "iio triggered buffer setup failed\n");
-		goto err_regulator_disable;
+		return err;
 	}
 
-	err = iio_device_register(iio);
-	if (err < 0)
-		goto err_buffer_cleanup;
-
-	i2c_set_clientdata(client, iio);
-
-	return 0;
-
-err_buffer_cleanup:
-	iio_triggered_buffer_cleanup(iio);
-err_regulator_disable:
-	regulator_disable(adc->ref);
-
-	return err;
-}
-
-static int adc081c_remove(struct i2c_client *client)
-{
-	struct iio_dev *iio = i2c_get_clientdata(client);
-	struct adc081c *adc = iio_priv(iio);
-
-	iio_device_unregister(iio);
-	iio_triggered_buffer_cleanup(iio);
-	regulator_disable(adc->ref);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, iio);
 }
 
 static const struct i2c_device_id adc081c_id[] = {
@@ -232,34 +214,28 @@ static const struct i2c_device_id adc081c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, adc081c_id);
 
-#ifdef CONFIG_OF
-static const struct of_device_id adc081c_of_match[] = {
-	{ .compatible = "ti,adc081c" },
-	{ .compatible = "ti,adc101c" },
-	{ .compatible = "ti,adc121c" },
+static const struct acpi_device_id adc081c_acpi_match[] = {
+	/* Used on some AAEON boards */
+	{ "ADC081C", (kernel_ulong_t)&adcxx1c_models[ADC081C] },
 	{ }
 };
-MODULE_DEVICE_TABLE(of, adc081c_of_match);
-#endif
+MODULE_DEVICE_TABLE(acpi, adc081c_acpi_match);
 
-#ifdef CONFIG_ACPI
-static const struct acpi_device_id adc081c_acpi_match[] = {
-	{ "ADC081C", ADC081C },
-	{ "ADC101C", ADC101C },
-	{ "ADC121C", ADC121C },
+static const struct of_device_id adc081c_of_match[] = {
+	{ .compatible = "ti,adc081c", .data = &adcxx1c_models[ADC081C] },
+	{ .compatible = "ti,adc101c", .data = &adcxx1c_models[ADC101C] },
+	{ .compatible = "ti,adc121c", .data = &adcxx1c_models[ADC121C] },
 	{ }
 };
-MODULE_DEVICE_TABLE(acpi, adc081c_acpi_match);
-#endif
+MODULE_DEVICE_TABLE(of, adc081c_of_match);
 
 static struct i2c_driver adc081c_driver = {
 	.driver = {
 		.name = "adc081c",
-		.of_match_table = of_match_ptr(adc081c_of_match),
-		.acpi_match_table = ACPI_PTR(adc081c_acpi_match),
+		.of_match_table = adc081c_of_match,
+		.acpi_match_table = adc081c_acpi_match,
 	},
 	.probe = adc081c_probe,
-	.remove = adc081c_remove,
 	.id_table = adc081c_id,
 };
 module_i2c_driver(adc081c_driver);
diff --git a/drivers/iio/adc/ti-adc0832.c b/drivers/iio/adc/ti-adc0832.c
index 6ea39f4bbb37..b11ce555ba3b 100644
--- a/drivers/iio/adc/ti-adc0832.c
+++ b/drivers/iio/adc/ti-adc0832.c
@@ -4,10 +4,11 @@
  *
  * Copyright (c) 2016 Akinobu Mita <akinobu.mita@gmail.com>
  *
- * Datasheet: http://www.ti.com/lit/ds/symlink/adc0832-n.pdf
+ * Datasheet: https://www.ti.com/lit/ds/symlink/adc0832-n.pdf
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 #include <linux/regulator/consumer.h>
@@ -28,8 +29,14 @@ struct adc0832 {
 	struct regulator *reg;
 	struct mutex lock;
 	u8 mux_bits;
+	/*
+	 * Max size needed: 16x 1 byte ADC data + 8 bytes timestamp
+	 * May be shorter if not all channels are enabled subject
+	 * to the timestamp remaining 8 byte aligned.
+	 */
+	u8 data[24] __aligned(8);
 
-	u8 tx_buf[2] ____cacheline_aligned;
+	u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN);
 	u8 rx_buf[2];
 };
 
@@ -199,7 +206,6 @@ static irqreturn_t adc0832_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adc0832 *adc = iio_priv(indio_dev);
-	u8 data[24] = { }; /* 16x 1 byte ADC data + 8 bytes timestamp */
 	int scan_index;
 	int i = 0;
 
@@ -217,10 +223,10 @@ static irqreturn_t adc0832_trigger_handler(int irq, void *p)
 			goto out;
 		}
 
-		data[i] = ret;
+		adc->data[i] = ret;
 		i++;
 	}
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, adc->data,
 					   iio_get_time_ns(indio_dev));
 out:
 	mutex_unlock(&adc->lock);
@@ -230,6 +236,11 @@ out:
 	return IRQ_HANDLED;
 }
 
+static void adc0832_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int adc0832_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -245,8 +256,6 @@ static int adc0832_probe(struct spi_device *spi)
 	mutex_init(&adc->lock);
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->info = &adc0832_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
@@ -283,40 +292,19 @@ static int adc0832_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	spi_set_drvdata(spi, indio_dev);
-
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-					 adc0832_trigger_handler, NULL);
+	ret = devm_add_action_or_reset(&spi->dev, adc0832_reg_disable,
+				       adc->reg);
 	if (ret)
-		goto err_reg_disable;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
+					      adc0832_trigger_handler, NULL);
 	if (ret)
-		goto err_buffer_cleanup;
-
-	return 0;
-err_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-err_reg_disable:
-	regulator_disable(adc->reg);
-
-	return ret;
-}
-
-static int adc0832_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adc0832 *adc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	regulator_disable(adc->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
-#ifdef CONFIG_OF
-
 static const struct of_device_id adc0832_dt_ids[] = {
 	{ .compatible = "ti,adc0831", },
 	{ .compatible = "ti,adc0832", },
@@ -326,8 +314,6 @@ static const struct of_device_id adc0832_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, adc0832_dt_ids);
 
-#endif
-
 static const struct spi_device_id adc0832_id[] = {
 	{ "adc0831", adc0831 },
 	{ "adc0832", adc0832 },
@@ -340,10 +326,9 @@ MODULE_DEVICE_TABLE(spi, adc0832_id);
 static struct spi_driver adc0832_driver = {
 	.driver = {
 		.name = "adc0832",
-		.of_match_table = of_match_ptr(adc0832_dt_ids),
+		.of_match_table = adc0832_dt_ids,
 	},
 	.probe = adc0832_probe,
-	.remove = adc0832_remove,
 	.id_table = adc0832_id,
 };
 module_spi_driver(adc0832_driver);
diff --git a/drivers/iio/adc/ti-adc084s021.c b/drivers/iio/adc/ti-adc084s021.c
index bdedf456ee05..1f6e53832e06 100644
--- a/drivers/iio/adc/ti-adc084s021.c
+++ b/drivers/iio/adc/ti-adc084s021.c
@@ -1,15 +1,16 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (C) 2017 Axis Communications AB
  *
  * Driver for Texas Instruments' ADC084S021 ADC chip.
  * Datasheets can be found here:
- * http://www.ti.com/lit/ds/symlink/adc084s021.pdf
+ * https://www.ti.com/lit/ds/symlink/adc084s021.pdf
  */
 
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/interrupt.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -25,11 +26,16 @@ struct adc084s021 {
 	struct spi_transfer spi_trans;
 	struct regulator *reg;
 	struct mutex lock;
+	/* Buffer used to align data */
+	struct {
+		__be16 channels[4];
+		s64 ts __aligned(8);
+	} scan;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache line.
 	 */
-	u16 tx_buf[4] ____cacheline_aligned;
+	u16 tx_buf[4] __aligned(IIO_DMA_MINALIGN);
 	__be16 rx_buf[5]; /* First 16-bits are trash */
 };
 
@@ -59,16 +65,15 @@ static const struct iio_chan_spec adc084s021_channels[] = {
 };
 
 /**
- * Read an ADC channel and return its value.
+ * adc084s021_adc_conversion() - Read an ADC channel and return its value.
  *
  * @adc: The ADC SPI data.
  * @data: Buffer for converted data.
  */
-static int adc084s021_adc_conversion(struct adc084s021 *adc, void *data)
+static int adc084s021_adc_conversion(struct adc084s021 *adc, __be16 *data)
 {
 	int n_words = (adc->spi_trans.len >> 1) - 1; /* Discard first word */
 	int ret, i = 0;
-	u16 *p = data;
 
 	/* Do the transfer */
 	ret = spi_sync(adc->spi, &adc->message);
@@ -76,7 +81,7 @@ static int adc084s021_adc_conversion(struct adc084s021 *adc, void *data)
 		return ret;
 
 	for (; i < n_words; i++)
-		*(p + i) = adc->rx_buf[i + 1];
+		*(data + i) = adc->rx_buf[i + 1];
 
 	return ret;
 }
@@ -87,6 +92,7 @@ static int adc084s021_read_raw(struct iio_dev *indio_dev,
 {
 	struct adc084s021 *adc = iio_priv(indio_dev);
 	int ret;
+	__be16 be_val;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
@@ -101,13 +107,13 @@ static int adc084s021_read_raw(struct iio_dev *indio_dev,
 		}
 
 		adc->tx_buf[0] = channel->channel << 3;
-		ret = adc084s021_adc_conversion(adc, val);
+		ret = adc084s021_adc_conversion(adc, &be_val);
 		iio_device_release_direct_mode(indio_dev);
 		regulator_disable(adc->reg);
 		if (ret < 0)
 			return ret;
 
-		*val = be16_to_cpu(*val);
+		*val = be16_to_cpu(be_val);
 		*val = (*val >> channel->scan_type.shift) & 0xff;
 
 		return IIO_VAL_INT;
@@ -130,7 +136,7 @@ static int adc084s021_read_raw(struct iio_dev *indio_dev,
 }
 
 /**
- * Read enabled ADC channels and push data to the buffer.
+ * adc084s021_buffer_trigger_handler() - Read ADC channels and push to buffer.
  *
  * @irq: The interrupt number (not used).
  * @pollfunc: Pointer to the poll func.
@@ -140,14 +146,13 @@ static irqreturn_t adc084s021_buffer_trigger_handler(int irq, void *pollfunc)
 	struct iio_poll_func *pf = pollfunc;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adc084s021 *adc = iio_priv(indio_dev);
-	__be16 data[8] = {0}; /* 4 * 16-bit words of data + 8 bytes timestamp */
 
 	mutex_lock(&adc->lock);
 
-	if (adc084s021_adc_conversion(adc, &data) < 0)
+	if (adc084s021_adc_conversion(adc, adc->scan.channels) < 0)
 		dev_err(&adc->spi->dev, "Failed to read data\n");
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, &adc->scan,
 					   iio_get_time_ns(indio_dev));
 	mutex_unlock(&adc->lock);
 	iio_trigger_notify_done(indio_dev->trig);
@@ -187,8 +192,6 @@ static const struct iio_info adc084s021_info = {
 
 static const struct iio_buffer_setup_ops adc084s021_buffer_setup_ops = {
 	.preenable = adc084s021_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = adc084s021_buffer_postdisable,
 };
 
@@ -207,12 +210,7 @@ static int adc084s021_probe(struct spi_device *spi)
 	adc = iio_priv(indio_dev);
 	adc->spi = spi;
 
-	/* Connect the SPI device and the iio dev */
-	spi_set_drvdata(spi, indio_dev);
-
 	/* Initiate the Industrial I/O device */
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &adc084s021_info;
@@ -250,7 +248,7 @@ static const struct of_device_id adc084s021_of_match[] = {
 MODULE_DEVICE_TABLE(of, adc084s021_of_match);
 
 static const struct spi_device_id adc084s021_id[] = {
-	{ ADC084S021_DRIVER_NAME, 0},
+	{ ADC084S021_DRIVER_NAME, 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(spi, adc084s021_id);
@@ -258,7 +256,7 @@ MODULE_DEVICE_TABLE(spi, adc084s021_id);
 static struct spi_driver adc084s021_driver = {
 	.driver = {
 		.name = ADC084S021_DRIVER_NAME,
-		.of_match_table = of_match_ptr(adc084s021_of_match),
+		.of_match_table = adc084s021_of_match,
 	},
 	.probe = adc084s021_probe,
 	.id_table = adc084s021_id,
diff --git a/drivers/iio/adc/ti-adc108s102.c b/drivers/iio/adc/ti-adc108s102.c
index de9aaebff862..c82a161630e1 100644
--- a/drivers/iio/adc/ti-adc108s102.c
+++ b/drivers/iio/adc/ti-adc108s102.c
@@ -20,6 +20,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/interrupt.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
@@ -74,10 +75,10 @@ struct adc108s102_state {
 	 *  rx_buf: |XX|R0|R1|R2|R3|R4|R5|R6|R7|tt|tt|tt|tt|
 	 *
 	 *  tx_buf: 8 channel read commands, plus 1 dummy command
-	 *  rx_buf: 1 dummy response, 8 channel responses, plus 64-bit timestamp
+	 *  rx_buf: 1 dummy response, 8 channel responses
 	 */
-	__be16				rx_buf[13] ____cacheline_aligned;
-	__be16				tx_buf[9] ____cacheline_aligned;
+	__be16				rx_buf[9] __aligned(IIO_DMA_MINALIGN);
+	__be16				tx_buf[9] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define ADC108S102_V_CHAN(index)					\
@@ -148,9 +149,10 @@ static irqreturn_t adc108s102_trigger_handler(int irq, void *p)
 		goto out_notify;
 
 	/* Skip the dummy response in the first slot */
-	iio_push_to_buffers_with_timestamp(indio_dev,
-					   (u8 *)&st->rx_buf[1],
-					   iio_get_time_ns(indio_dev));
+	iio_push_to_buffers_with_ts_unaligned(indio_dev,
+					      &st->rx_buf[1],
+					      st->ring_xfer.len - sizeof(st->rx_buf[1]),
+					      iio_get_time_ns(indio_dev));
 
 out_notify:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -214,6 +216,11 @@ static const struct iio_info adc108s102_info = {
 	.update_scan_mode	= &adc108s102_update_scan_mode,
 };
 
+static void adc108s102_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int adc108s102_probe(struct spi_device *spi)
 {
 	struct adc108s102_state *st;
@@ -238,6 +245,10 @@ static int adc108s102_probe(struct spi_device *spi)
 			dev_err(&spi->dev, "Cannot enable vref regulator\n");
 			return ret;
 		}
+		ret = devm_add_action_or_reset(&spi->dev, adc108s102_reg_disable,
+					       st->reg);
+		if (ret)
+			return ret;
 
 		ret = regulator_get_voltage(st->reg);
 		if (ret < 0) {
@@ -248,11 +259,9 @@ static int adc108s102_probe(struct spi_device *spi)
 		st->va_millivolt = ret / 1000;
 	}
 
-	spi_set_drvdata(spi, indio_dev);
 	st->spi = spi;
 
 	indio_dev->name = spi->modalias;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = adc108s102_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adc108s102_channels);
@@ -266,47 +275,23 @@ static int adc108s102_probe(struct spi_device *spi)
 	spi_message_init_with_transfers(&st->scan_single_msg,
 					&st->scan_single_xfer, 1);
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-					 &adc108s102_trigger_handler, NULL);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
+					      &adc108s102_trigger_handler,
+					      NULL);
 	if (ret)
-		goto error_disable_reg;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret) {
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret)
 		dev_err(&spi->dev, "Failed to register IIO device\n");
-		goto error_cleanup_triggered_buffer;
-	}
-	return 0;
-
-error_cleanup_triggered_buffer:
-	iio_triggered_buffer_cleanup(indio_dev);
-
-error_disable_reg:
-	regulator_disable(st->reg);
-
 	return ret;
 }
 
-static int adc108s102_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adc108s102_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	regulator_disable(st->reg);
-
-	return 0;
-}
-
-#ifdef CONFIG_OF
 static const struct of_device_id adc108s102_of_match[] = {
 	{ .compatible = "ti,adc108s102" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, adc108s102_of_match);
-#endif
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id adc108s102_acpi_ids[] = {
@@ -325,11 +310,10 @@ MODULE_DEVICE_TABLE(spi, adc108s102_id);
 static struct spi_driver adc108s102_driver = {
 	.driver = {
 		.name   = "adc108s102",
-		.of_match_table = of_match_ptr(adc108s102_of_match),
+		.of_match_table = adc108s102_of_match,
 		.acpi_match_table = ACPI_PTR(adc108s102_acpi_ids),
 	},
 	.probe		= adc108s102_probe,
-	.remove		= adc108s102_remove,
 	.id_table	= adc108s102_id,
 };
 module_spi_driver(adc108s102_driver);
diff --git a/drivers/iio/adc/ti-adc12138.c b/drivers/iio/adc/ti-adc12138.c
index 68a9dcb8faa2..c0a72d72f3a9 100644
--- a/drivers/iio/adc/ti-adc12138.c
+++ b/drivers/iio/adc/ti-adc12138.c
@@ -11,6 +11,7 @@
 #include <linux/interrupt.h>
 #include <linux/completion.h>
 #include <linux/clk.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -47,8 +48,14 @@ struct adc12138 {
 	struct completion complete;
 	/* The number of cclk periods for the S/H's acquisition time */
 	unsigned int acquisition_time;
-
-	u8 tx_buf[2] ____cacheline_aligned;
+	/*
+	 * Maximum size needed: 16x 2 bytes ADC data + 8 bytes timestamp.
+	 * Less may be need if not all channels are enabled, as long as
+	 * the 8 byte alignment of the timestamp is maintained.
+	 */
+	__be16 data[20] __aligned(8);
+
+	u8 tx_buf[2] __aligned(IIO_DMA_MINALIGN);
 	u8 rx_buf[2];
 };
 
@@ -233,7 +240,8 @@ static int adc12138_read_raw(struct iio_dev *iio,
 		if (ret)
 			return ret;
 
-		*value = sign_extend32(be16_to_cpu(data) >> 3, 12);
+		*value = sign_extend32(be16_to_cpu(data) >> channel->scan_type.shift,
+				       channel->scan_type.realbits - 1);
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
@@ -329,7 +337,6 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adc12138 *adc = iio_priv(indio_dev);
-	__be16 data[20] = { }; /* 16x 2 bytes ADC data + 8 bytes timestamp */
 	__be16 trash;
 	int ret;
 	int scan_index;
@@ -345,7 +352,7 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 		reinit_completion(&adc->complete);
 
 		ret = adc12138_start_and_read_conv(adc, scan_chan,
-						   i ? &data[i - 1] : &trash);
+					i ? &adc->data[i - 1] : &trash);
 		if (ret) {
 			dev_warn(&adc->spi->dev,
 				 "failed to start conversion\n");
@@ -362,7 +369,7 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 	}
 
 	if (i) {
-		ret = adc12138_read_conv_data(adc, &data[i - 1]);
+		ret = adc12138_read_conv_data(adc, &adc->data[i - 1]);
 		if (ret) {
 			dev_warn(&adc->spi->dev,
 				 "failed to get conversion data\n");
@@ -370,7 +377,7 @@ static irqreturn_t adc12138_trigger_handler(int irq, void *p)
 		}
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, adc->data,
 					   iio_get_time_ns(indio_dev));
 out:
 	mutex_unlock(&adc->lock);
@@ -407,7 +414,6 @@ static int adc12138_probe(struct spi_device *spi)
 	init_completion(&adc->complete);
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adc12138_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
@@ -425,8 +431,8 @@ static int adc12138_probe(struct spi_device *spi)
 		return -EINVAL;
 	}
 
-	ret = of_property_read_u32(spi->dev.of_node, "ti,acquisition-time",
-				   &adc->acquisition_time);
+	ret = device_property_read_u32(&spi->dev, "ti,acquisition-time",
+				       &adc->acquisition_time);
 	if (ret)
 		adc->acquisition_time = 10;
 
@@ -497,7 +503,7 @@ err_clk_disable:
 	return ret;
 }
 
-static int adc12138_remove(struct spi_device *spi)
+static void adc12138_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct adc12138 *adc = iio_priv(indio_dev);
@@ -508,12 +514,8 @@ static int adc12138_remove(struct spi_device *spi)
 		regulator_disable(adc->vref_n);
 	regulator_disable(adc->vref_p);
 	clk_disable_unprepare(adc->cclk);
-
-	return 0;
 }
 
-#ifdef CONFIG_OF
-
 static const struct of_device_id adc12138_dt_ids[] = {
 	{ .compatible = "ti,adc12130", },
 	{ .compatible = "ti,adc12132", },
@@ -522,8 +524,6 @@ static const struct of_device_id adc12138_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, adc12138_dt_ids);
 
-#endif
-
 static const struct spi_device_id adc12138_id[] = {
 	{ "adc12130", adc12130 },
 	{ "adc12132", adc12132 },
@@ -535,7 +535,7 @@ MODULE_DEVICE_TABLE(spi, adc12138_id);
 static struct spi_driver adc12138_driver = {
 	.driver = {
 		.name = "adc12138",
-		.of_match_table = of_match_ptr(adc12138_dt_ids),
+		.of_match_table = adc12138_dt_ids,
 	},
 	.probe = adc12138_probe,
 	.remove = adc12138_remove,
diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c
index 1e5a936b5b6a..622fd384983c 100644
--- a/drivers/iio/adc/ti-adc128s052.c
+++ b/drivers/iio/adc/ti-adc128s052.c
@@ -4,15 +4,16 @@
  *
  * Driver for Texas Instruments' ADC128S052, ADC122S021 and ADC124S021 ADC chip.
  * Datasheets can be found here:
- * http://www.ti.com/lit/ds/symlink/adc128s052.pdf
- * http://www.ti.com/lit/ds/symlink/adc122s021.pdf
- * http://www.ti.com/lit/ds/symlink/adc124s021.pdf
+ * https://www.ti.com/lit/ds/symlink/adc128s052.pdf
+ * https://www.ti.com/lit/ds/symlink/adc122s021.pdf
+ * https://www.ti.com/lit/ds/symlink/adc124s021.pdf
  */
 
 #include <linux/acpi.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
@@ -28,7 +29,7 @@ struct adc128 {
 	struct regulator *reg;
 	struct mutex lock;
 
-	u8 buffer[2] ____cacheline_aligned;
+	u8 buffer[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int adc128_adc_conversion(struct adc128 *adc, u8 channel)
@@ -131,6 +132,11 @@ static const struct iio_info adc128_info = {
 	.read_raw = adc128_read_raw,
 };
 
+static void adc128_disable_regulator(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int adc128_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -150,10 +156,6 @@ static int adc128_probe(struct spi_device *spi)
 	adc = iio_priv(indio_dev);
 	adc->spi = spi;
 
-	spi_set_drvdata(spi, indio_dev);
-
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &adc128_info;
@@ -168,23 +170,14 @@ static int adc128_probe(struct spi_device *spi)
 	ret = regulator_enable(adc->reg);
 	if (ret < 0)
 		return ret;
+	ret = devm_add_action_or_reset(&spi->dev, adc128_disable_regulator,
+				       adc->reg);
+	if (ret)
+		return ret;
 
 	mutex_init(&adc->lock);
 
-	ret = iio_device_register(indio_dev);
-
-	return ret;
-}
-
-static int adc128_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adc128 *adc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	regulator_disable(adc->reg);
-
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct of_device_id adc128_of_match[] = {
@@ -222,11 +215,10 @@ MODULE_DEVICE_TABLE(acpi, adc128_acpi_match);
 static struct spi_driver adc128_driver = {
 	.driver = {
 		.name = "adc128s052",
-		.of_match_table = of_match_ptr(adc128_of_match),
+		.of_match_table = adc128_of_match,
 		.acpi_match_table = ACPI_PTR(adc128_acpi_match),
 	},
 	.probe = adc128_probe,
-	.remove = adc128_remove,
 	.id_table = adc128_id,
 };
 module_spi_driver(adc128_driver);
diff --git a/drivers/iio/adc/ti-adc161s626.c b/drivers/iio/adc/ti-adc161s626.c
index 3bbc9b9ddbfe..b789891dcf49 100644
--- a/drivers/iio/adc/ti-adc161s626.c
+++ b/drivers/iio/adc/ti-adc161s626.c
@@ -11,6 +11,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/init.h>
 #include <linux/err.h>
 #include <linux/spi/spi.h>
@@ -70,7 +71,7 @@ struct ti_adc_data {
 	u8 read_size;
 	u8 shift;
 
-	u8 buffer[16] ____cacheline_aligned;
+	u8 buffer[16] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ti_adc_read_measurement(struct ti_adc_data *data,
@@ -168,6 +169,11 @@ static const struct iio_info ti_adc_info = {
 	.read_raw = ti_adc_read_raw,
 };
 
+static void ti_adc_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ti_adc_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -179,11 +185,8 @@ static int ti_adc_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	indio_dev->info = &ti_adc_info;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = TI_ADC_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	spi_set_drvdata(spi, indio_dev);
 
 	data = iio_priv(indio_dev);
 	data->spi = spi;
@@ -204,42 +207,24 @@ static int ti_adc_probe(struct spi_device *spi)
 	}
 
 	data->ref = devm_regulator_get(&spi->dev, "vdda");
-	if (!IS_ERR(data->ref)) {
-		ret = regulator_enable(data->ref);
-		if (ret < 0)
-			return ret;
-	}
+	if (IS_ERR(data->ref))
+		return PTR_ERR(data->ref);
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
-					 ti_adc_trigger_handler, NULL);
-	if (ret)
-		goto error_regulator_disable;
+	ret = regulator_enable(data->ref);
+	if (ret < 0)
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, ti_adc_reg_disable,
+				       data->ref);
 	if (ret)
-		goto error_unreg_buffer;
-
-	return 0;
+		return ret;
 
-error_unreg_buffer:
-	iio_triggered_buffer_cleanup(indio_dev);
-
-error_regulator_disable:
-	regulator_disable(data->ref);
-
-	return ret;
-}
-
-static int ti_adc_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ti_adc_data *data = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	regulator_disable(data->ref);
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev, NULL,
+					      ti_adc_trigger_handler, NULL);
+	if (ret)
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct of_device_id ti_adc_dt_ids[] = {
@@ -259,10 +244,9 @@ MODULE_DEVICE_TABLE(spi, ti_adc_id);
 static struct spi_driver ti_adc_driver = {
 	.driver = {
 		.name	= TI_ADC_DRV_NAME,
-		.of_match_table = of_match_ptr(ti_adc_dt_ids),
+		.of_match_table = ti_adc_dt_ids,
 	},
 	.probe		= ti_adc_probe,
-	.remove		= ti_adc_remove,
 	.id_table	= ti_adc_id,
 };
 module_spi_driver(ti_adc_driver);
diff --git a/drivers/iio/adc/ti-ads1015.c b/drivers/iio/adc/ti-ads1015.c
index 5ea4f45d6bad..8bceba694026 100644
--- a/drivers/iio/adc/ti-ads1015.c
+++ b/drivers/iio/adc/ti-ads1015.c
@@ -76,10 +76,15 @@
 #define ADS1015_DEFAULT_DATA_RATE	4
 #define ADS1015_DEFAULT_CHAN		0
 
-enum chip_ids {
-	ADSXXXX = 0,
-	ADS1015,
-	ADS1115,
+struct ads1015_chip_data {
+	struct iio_chan_spec const	*channels;
+	int				num_channels;
+	const struct iio_info		*info;
+	const int			*data_rate;
+	const int			data_rate_len;
+	const int			*scale;
+	const int			scale_len;
+	bool				has_comparator;
 };
 
 enum ads1015_channels {
@@ -94,11 +99,11 @@ enum ads1015_channels {
 	ADS1015_TIMESTAMP,
 };
 
-static const unsigned int ads1015_data_rate[] = {
+static const int ads1015_data_rate[] = {
 	128, 250, 490, 920, 1600, 2400, 3300, 3300
 };
 
-static const unsigned int ads1115_data_rate[] = {
+static const int ads1115_data_rate[] = {
 	8, 16, 32, 64, 128, 250, 475, 860
 };
 
@@ -106,10 +111,28 @@ static const unsigned int ads1115_data_rate[] = {
  * Translation from PGA bits to full-scale positive and negative input voltage
  * range in mV
  */
-static int ads1015_fullscale_range[] = {
+static const int ads1015_fullscale_range[] = {
 	6144, 4096, 2048, 1024, 512, 256, 256, 256
 };
 
+static const int ads1015_scale[] = {	/* 12bit ADC */
+	256, 11,
+	512, 11,
+	1024, 11,
+	2048, 11,
+	4096, 11,
+	6144, 11
+};
+
+static const int ads1115_scale[] = {	/* 16bit ADC */
+	256, 15,
+	512, 15,
+	1024, 15,
+	2048, 15,
+	4096, 15,
+	6144, 15
+};
+
 /*
  * Translation from COMP_QUE field value to the number of successive readings
  * exceed the threshold values before an interrupt is generated
@@ -134,7 +157,29 @@ static const struct iio_event_spec ads1015_events[] = {
 	},
 };
 
-#define ADS1015_V_CHAN(_chan, _addr) {				\
+/*
+ * Compile-time check whether _fitbits can accommodate up to _testbits
+ * bits. Returns _fitbits on success, fails to compile otherwise.
+ *
+ * The test works such that it multiplies constant _fitbits by constant
+ * double-negation of size of a non-empty structure, i.e. it multiplies
+ * constant _fitbits by constant 1 in each successful compilation case.
+ * The non-empty structure may contain C11 _Static_assert(), make use of
+ * this and place the kernel variant of static assert in there, so that
+ * it performs the compile-time check for _testbits <= _fitbits. Note
+ * that it is not possible to directly use static_assert in compound
+ * statements, hence this convoluted construct.
+ */
+#define FIT_CHECK(_testbits, _fitbits)					\
+	(								\
+		(_fitbits) *						\
+		!!sizeof(struct {					\
+			static_assert((_testbits) <= (_fitbits));	\
+			int pad;					\
+		})							\
+	)
+
+#define ADS1015_V_CHAN(_chan, _addr, _realbits, _shift, _event_spec, _num_event_specs) { \
 	.type = IIO_VOLTAGE,					\
 	.indexed = 1,						\
 	.address = _addr,					\
@@ -142,63 +187,23 @@ static const struct iio_event_spec ads1015_events[] = {
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
 				BIT(IIO_CHAN_INFO_SCALE) |	\
 				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
-	.scan_index = _addr,					\
-	.scan_type = {						\
-		.sign = 's',					\
-		.realbits = 12,					\
-		.storagebits = 16,				\
-		.shift = 4,					\
-		.endianness = IIO_CPU,				\
-	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
-	.datasheet_name = "AIN"#_chan,				\
-}
-
-#define ADS1015_V_DIFF_CHAN(_chan, _chan2, _addr) {		\
-	.type = IIO_VOLTAGE,					\
-	.differential = 1,					\
-	.indexed = 1,						\
-	.address = _addr,					\
-	.channel = _chan,					\
-	.channel2 = _chan2,					\
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+	.info_mask_shared_by_all_available =			\
 				BIT(IIO_CHAN_INFO_SCALE) |	\
 				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
 	.scan_index = _addr,					\
 	.scan_type = {						\
 		.sign = 's',					\
-		.realbits = 12,					\
-		.storagebits = 16,				\
-		.shift = 4,					\
+		.realbits = (_realbits),			\
+		.storagebits = FIT_CHECK((_realbits) + (_shift), 16),	\
+		.shift = (_shift),				\
 		.endianness = IIO_CPU,				\
 	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
-	.datasheet_name = "AIN"#_chan"-AIN"#_chan2,		\
-}
-
-#define ADS1115_V_CHAN(_chan, _addr) {				\
-	.type = IIO_VOLTAGE,					\
-	.indexed = 1,						\
-	.address = _addr,					\
-	.channel = _chan,					\
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
-				BIT(IIO_CHAN_INFO_SCALE) |	\
-				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
-	.scan_index = _addr,					\
-	.scan_type = {						\
-		.sign = 's',					\
-		.realbits = 16,					\
-		.storagebits = 16,				\
-		.endianness = IIO_CPU,				\
-	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
+	.event_spec = (_event_spec),				\
+	.num_event_specs = (_num_event_specs),			\
 	.datasheet_name = "AIN"#_chan,				\
 }
 
-#define ADS1115_V_DIFF_CHAN(_chan, _chan2, _addr) {		\
+#define ADS1015_V_DIFF_CHAN(_chan, _chan2, _addr, _realbits, _shift, _event_spec, _num_event_specs) { \
 	.type = IIO_VOLTAGE,					\
 	.differential = 1,					\
 	.indexed = 1,						\
@@ -208,15 +213,19 @@ static const struct iio_event_spec ads1015_events[] = {
 	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
 				BIT(IIO_CHAN_INFO_SCALE) |	\
 				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+	.info_mask_shared_by_all_available =			\
+				BIT(IIO_CHAN_INFO_SCALE) |	\
+				BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
 	.scan_index = _addr,					\
 	.scan_type = {						\
 		.sign = 's',					\
-		.realbits = 16,					\
-		.storagebits = 16,				\
+		.realbits = (_realbits),			\
+		.storagebits = FIT_CHECK((_realbits) + (_shift), 16),	\
+		.shift = (_shift),				\
 		.endianness = IIO_CPU,				\
 	},							\
-	.event_spec = ads1015_events,				\
-	.num_event_specs = ARRAY_SIZE(ads1015_events),		\
+	.event_spec = (_event_spec),				\
+	.num_event_specs = (_num_event_specs),			\
 	.datasheet_name = "AIN"#_chan"-AIN"#_chan2,		\
 }
 
@@ -245,7 +254,7 @@ struct ads1015_data {
 	unsigned int comp_mode;
 	struct ads1015_thresh_data thresh_data[ADS1015_CHANNELS];
 
-	unsigned int *data_rate;
+	const struct ads1015_chip_data *chip;
 	/*
 	 * Set to true when the ADC is switched to the continuous-conversion
 	 * mode and exits from a power-down state.  This flag is used to avoid
@@ -273,58 +282,99 @@ static void ads1015_event_channel_disable(struct ads1015_data *data, int chan)
 	data->event_channel = ADS1015_CHANNELS;
 }
 
-static bool ads1015_is_writeable_reg(struct device *dev, unsigned int reg)
-{
-	switch (reg) {
-	case ADS1015_CFG_REG:
-	case ADS1015_LO_THRESH_REG:
-	case ADS1015_HI_THRESH_REG:
-		return true;
-	default:
-		return false;
-	}
-}
+static const struct regmap_range ads1015_writeable_ranges[] = {
+	regmap_reg_range(ADS1015_CFG_REG, ADS1015_HI_THRESH_REG),
+};
+
+static const struct regmap_access_table ads1015_writeable_table = {
+	.yes_ranges = ads1015_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(ads1015_writeable_ranges),
+};
 
 static const struct regmap_config ads1015_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 16,
 	.max_register = ADS1015_HI_THRESH_REG,
-	.writeable_reg = ads1015_is_writeable_reg,
+	.wr_table = &ads1015_writeable_table,
+};
+
+static const struct regmap_range tla2024_writeable_ranges[] = {
+	regmap_reg_range(ADS1015_CFG_REG, ADS1015_CFG_REG),
+};
+
+static const struct regmap_access_table tla2024_writeable_table = {
+	.yes_ranges = tla2024_writeable_ranges,
+	.n_yes_ranges = ARRAY_SIZE(tla2024_writeable_ranges),
+};
+
+static const struct regmap_config tla2024_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.max_register = ADS1015_CFG_REG,
+	.wr_table = &tla2024_writeable_table,
 };
 
 static const struct iio_chan_spec ads1015_channels[] = {
-	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1),
-	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3),
-	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3),
-	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3),
-	ADS1015_V_CHAN(0, ADS1015_AIN0),
-	ADS1015_V_CHAN(1, ADS1015_AIN1),
-	ADS1015_V_CHAN(2, ADS1015_AIN2),
-	ADS1015_V_CHAN(3, ADS1015_AIN3),
+	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3, 12, 4,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(0, ADS1015_AIN0, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(1, ADS1015_AIN1, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(2, ADS1015_AIN2, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(3, ADS1015_AIN3, 12, 4,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
 	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
 };
 
 static const struct iio_chan_spec ads1115_channels[] = {
-	ADS1115_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1),
-	ADS1115_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3),
-	ADS1115_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3),
-	ADS1115_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3),
-	ADS1115_V_CHAN(0, ADS1015_AIN0),
-	ADS1115_V_CHAN(1, ADS1015_AIN1),
-	ADS1115_V_CHAN(2, ADS1015_AIN2),
-	ADS1115_V_CHAN(3, ADS1015_AIN3),
+	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3, 16, 0,
+			    ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(0, ADS1015_AIN0, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(1, ADS1015_AIN1, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(2, ADS1015_AIN2, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
+	ADS1015_V_CHAN(3, ADS1015_AIN3, 16, 0,
+		       ads1015_events, ARRAY_SIZE(ads1015_events)),
 	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
 };
 
+static const struct iio_chan_spec tla2024_channels[] = {
+	ADS1015_V_DIFF_CHAN(0, 1, ADS1015_AIN0_AIN1, 12, 4, NULL, 0),
+	ADS1015_V_DIFF_CHAN(0, 3, ADS1015_AIN0_AIN3, 12, 4, NULL, 0),
+	ADS1015_V_DIFF_CHAN(1, 3, ADS1015_AIN1_AIN3, 12, 4, NULL, 0),
+	ADS1015_V_DIFF_CHAN(2, 3, ADS1015_AIN2_AIN3, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(0, ADS1015_AIN0, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(1, ADS1015_AIN1, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(2, ADS1015_AIN2, 12, 4, NULL, 0),
+	ADS1015_V_CHAN(3, ADS1015_AIN3, 12, 4, NULL, 0),
+	IIO_CHAN_SOFT_TIMESTAMP(ADS1015_TIMESTAMP),
+};
+
+
+#ifdef CONFIG_PM
 static int ads1015_set_power_state(struct ads1015_data *data, bool on)
 {
 	int ret;
 	struct device *dev = regmap_get_device(data->regmap);
 
 	if (on) {
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(dev);
+		ret = pm_runtime_resume_and_get(dev);
 	} else {
 		pm_runtime_mark_last_busy(dev);
 		ret = pm_runtime_put_autosuspend(dev);
@@ -333,9 +383,19 @@ static int ads1015_set_power_state(struct ads1015_data *data, bool on)
 	return ret < 0 ? ret : 0;
 }
 
+#else /* !CONFIG_PM */
+
+static int ads1015_set_power_state(struct ads1015_data *data, bool on)
+{
+	return 0;
+}
+
+#endif /* !CONFIG_PM */
+
 static
 int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val)
 {
+	const int *data_rate = data->chip->data_rate;
 	int ret, pga, dr, dr_old, conv_time;
 	unsigned int old, mask, cfg;
 
@@ -370,8 +430,8 @@ int ads1015_get_adc_result(struct ads1015_data *data, int chan, int *val)
 	}
 	if (data->conv_invalid) {
 		dr_old = (old & ADS1015_CFG_DR_MASK) >> ADS1015_CFG_DR_SHIFT;
-		conv_time = DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr_old]);
-		conv_time += DIV_ROUND_UP(USEC_PER_SEC, data->data_rate[dr]);
+		conv_time = DIV_ROUND_UP(USEC_PER_SEC, data_rate[dr_old]);
+		conv_time += DIV_ROUND_UP(USEC_PER_SEC, data_rate[dr]);
 		conv_time += conv_time / 10; /* 10% internal clock inaccuracy */
 		usleep_range(conv_time, conv_time + 1);
 		data->conv_invalid = false;
@@ -385,10 +445,14 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ads1015_data *data = iio_priv(indio_dev);
-	s16 buf[8]; /* 1x s16 ADC val + 3x s16 padding +  4x s16 timestamp */
+	/* Ensure natural alignment of timestamp */
+	struct {
+		s16 chan;
+		s64 timestamp __aligned(8);
+	} scan;
 	int chan, ret, res;
 
-	memset(buf, 0, sizeof(buf));
+	memset(&scan, 0, sizeof(scan));
 
 	mutex_lock(&data->lock);
 	chan = find_first_bit(indio_dev->active_scan_mask,
@@ -399,10 +463,10 @@ static irqreturn_t ads1015_trigger_handler(int irq, void *p)
 		goto err;
 	}
 
-	buf[0] = res;
+	scan.chan = res;
 	mutex_unlock(&data->lock);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan,
 					   iio_get_time_ns(indio_dev));
 
 err:
@@ -433,8 +497,8 @@ static int ads1015_set_data_rate(struct ads1015_data *data, int chan, int rate)
 {
 	int i;
 
-	for (i = 0; i < ARRAY_SIZE(ads1015_data_rate); i++) {
-		if (data->data_rate[i] == rate) {
+	for (i = 0; i < data->chip->data_rate_len; i++) {
+		if (data->chip->data_rate[i] == rate) {
 			data->channel_data[chan].data_rate = i;
 			return 0;
 		}
@@ -443,6 +507,32 @@ static int ads1015_set_data_rate(struct ads1015_data *data, int chan, int rate)
 	return -EINVAL;
 }
 
+static int ads1015_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long mask)
+{
+	struct ads1015_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_VOLTAGE)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*type = IIO_VAL_FRACTIONAL_LOG2;
+		*vals =  data->chip->scale;
+		*length = data->chip->scale_len;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT;
+		*vals = data->chip->data_rate;
+		*length = data->chip->data_rate_len;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
 static int ads1015_read_raw(struct iio_dev *indio_dev,
 			    struct iio_chan_spec const *chan, int *val,
 			    int *val2, long mask)
@@ -452,9 +542,7 @@ static int ads1015_read_raw(struct iio_dev *indio_dev,
 
 	mutex_lock(&data->lock);
 	switch (mask) {
-	case IIO_CHAN_INFO_RAW: {
-		int shift = chan->scan_type.shift;
-
+	case IIO_CHAN_INFO_RAW:
 		ret = iio_device_claim_direct_mode(indio_dev);
 		if (ret)
 			break;
@@ -475,7 +563,8 @@ static int ads1015_read_raw(struct iio_dev *indio_dev,
 			goto release_direct;
 		}
 
-		*val = sign_extend32(*val >> shift, 15 - shift);
+		*val = sign_extend32(*val >> chan->scan_type.shift,
+				     chan->scan_type.realbits - 1);
 
 		ret = ads1015_set_power_state(data, false);
 		if (ret < 0)
@@ -485,7 +574,6 @@ static int ads1015_read_raw(struct iio_dev *indio_dev,
 release_direct:
 		iio_device_release_direct_mode(indio_dev);
 		break;
-	}
 	case IIO_CHAN_INFO_SCALE:
 		idx = data->channel_data[chan->address].pga;
 		*val = ads1015_fullscale_range[idx];
@@ -494,7 +582,7 @@ release_direct:
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		idx = data->channel_data[chan->address].data_rate;
-		*val = data->data_rate[idx];
+		*val = data->chip->data_rate[idx];
 		ret = IIO_VAL_INT;
 		break;
 	default:
@@ -554,7 +642,7 @@ static int ads1015_read_event(struct iio_dev *indio_dev,
 		dr = data->channel_data[chan->address].data_rate;
 		comp_queue = data->thresh_data[chan->address].comp_queue;
 		period = ads1015_comp_queue[comp_queue] *
-			USEC_PER_SEC / data->data_rate[dr];
+			USEC_PER_SEC / data->chip->data_rate[dr];
 
 		*val = period / USEC_PER_SEC;
 		*val2 = period % USEC_PER_SEC;
@@ -576,6 +664,7 @@ static int ads1015_write_event(struct iio_dev *indio_dev,
 	int val2)
 {
 	struct ads1015_data *data = iio_priv(indio_dev);
+	const int *data_rate = data->chip->data_rate;
 	int realbits = chan->scan_type.realbits;
 	int ret = 0;
 	long long period;
@@ -601,7 +690,7 @@ static int ads1015_write_event(struct iio_dev *indio_dev,
 
 		for (i = 0; i < ARRAY_SIZE(ads1015_comp_queue) - 1; i++) {
 			if (period <= ads1015_comp_queue[i] *
-					USEC_PER_SEC / data->data_rate[dr])
+					USEC_PER_SEC / data_rate[dr])
 				break;
 		}
 		data->thresh_data[chan->address].comp_queue = i;
@@ -788,60 +877,24 @@ static int ads1015_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops ads1015_buffer_setup_ops = {
 	.preenable	= ads1015_buffer_preenable,
-	.postenable	= iio_triggered_buffer_postenable,
-	.predisable	= iio_triggered_buffer_predisable,
 	.postdisable	= ads1015_buffer_postdisable,
 	.validate_scan_mask = &iio_validate_scan_mask_onehot,
 };
 
-static IIO_CONST_ATTR_NAMED(ads1015_scale_available, scale_available,
-	"3 2 1 0.5 0.25 0.125");
-static IIO_CONST_ATTR_NAMED(ads1115_scale_available, scale_available,
-	"0.1875 0.125 0.0625 0.03125 0.015625 0.007813");
-
-static IIO_CONST_ATTR_NAMED(ads1015_sampling_frequency_available,
-	sampling_frequency_available, "128 250 490 920 1600 2400 3300");
-static IIO_CONST_ATTR_NAMED(ads1115_sampling_frequency_available,
-	sampling_frequency_available, "8 16 32 64 128 250 475 860");
-
-static struct attribute *ads1015_attributes[] = {
-	&iio_const_attr_ads1015_scale_available.dev_attr.attr,
-	&iio_const_attr_ads1015_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group ads1015_attribute_group = {
-	.attrs = ads1015_attributes,
-};
-
-static struct attribute *ads1115_attributes[] = {
-	&iio_const_attr_ads1115_scale_available.dev_attr.attr,
-	&iio_const_attr_ads1115_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group ads1115_attribute_group = {
-	.attrs = ads1115_attributes,
-};
-
 static const struct iio_info ads1015_info = {
+	.read_avail	= ads1015_read_avail,
 	.read_raw	= ads1015_read_raw,
 	.write_raw	= ads1015_write_raw,
 	.read_event_value = ads1015_read_event,
 	.write_event_value = ads1015_write_event,
 	.read_event_config = ads1015_read_event_config,
 	.write_event_config = ads1015_write_event_config,
-	.attrs          = &ads1015_attribute_group,
 };
 
-static const struct iio_info ads1115_info = {
+static const struct iio_info tla2024_info = {
+	.read_avail	= ads1015_read_avail,
 	.read_raw	= ads1015_read_raw,
 	.write_raw	= ads1015_write_raw,
-	.read_event_value = ads1015_read_event,
-	.write_event_value = ads1015_write_event,
-	.read_event_config = ads1015_read_event_config,
-	.write_event_config = ads1015_write_event_config,
-	.attrs          = &ads1115_attribute_group,
 };
 
 static int ads1015_client_get_channels_config(struct i2c_client *client)
@@ -924,12 +977,18 @@ static int ads1015_set_conv_mode(struct ads1015_data *data, int mode)
 static int ads1015_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
+	const struct ads1015_chip_data *chip;
 	struct iio_dev *indio_dev;
 	struct ads1015_data *data;
 	int ret;
-	enum chip_ids chip;
 	int i;
 
+	chip = device_get_match_data(&client->dev);
+	if (!chip)
+		chip = (const struct ads1015_chip_data *)id->driver_data;
+	if (!chip)
+		return dev_err_probe(&client->dev, -EINVAL, "Unknown chip\n");
+
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;
@@ -939,33 +998,15 @@ static int ads1015_probe(struct i2c_client *client,
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->name = ADS1015_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	chip = (enum chip_ids)device_get_match_data(&client->dev);
-	if (chip == ADSXXXX)
-		chip = id->driver_data;
-	switch (chip) {
-	case ADS1015:
-		indio_dev->channels = ads1015_channels;
-		indio_dev->num_channels = ARRAY_SIZE(ads1015_channels);
-		indio_dev->info = &ads1015_info;
-		data->data_rate = (unsigned int *) &ads1015_data_rate;
-		break;
-	case ADS1115:
-		indio_dev->channels = ads1115_channels;
-		indio_dev->num_channels = ARRAY_SIZE(ads1115_channels);
-		indio_dev->info = &ads1115_info;
-		data->data_rate = (unsigned int *) &ads1115_data_rate;
-		break;
-	default:
-		dev_err(&client->dev, "Unknown chip %d\n", chip);
-		return -EINVAL;
-	}
-
+	indio_dev->channels = chip->channels;
+	indio_dev->num_channels = chip->num_channels;
+	indio_dev->info = chip->info;
+	data->chip = chip;
 	data->event_channel = ADS1015_CHANNELS;
+
 	/*
 	 * Set default lower and upper threshold to min and max value
 	 * respectively.
@@ -980,7 +1021,9 @@ static int ads1015_probe(struct i2c_client *client,
 	/* we need to keep this ABI the same as used by hwmon ADS1015 driver */
 	ads1015_get_channels_config(client);
 
-	data->regmap = devm_regmap_init_i2c(client, &ads1015_regmap_config);
+	data->regmap = devm_regmap_init_i2c(client, chip->has_comparator ?
+					    &ads1015_regmap_config :
+					    &tla2024_regmap_config);
 	if (IS_ERR(data->regmap)) {
 		dev_err(&client->dev, "Failed to allocate register map\n");
 		return PTR_ERR(data->regmap);
@@ -994,7 +1037,7 @@ static int ads1015_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	if (client->irq) {
+	if (client->irq && chip->has_comparator) {
 		unsigned long irq_trig =
 			irqd_get_trigger_type(irq_get_irq_data(client->irq));
 		unsigned int cfg_comp_mask = ADS1015_CFG_COMP_QUE_MASK |
@@ -1051,19 +1094,22 @@ static int ads1015_probe(struct i2c_client *client,
 	return 0;
 }
 
-static int ads1015_remove(struct i2c_client *client)
+static void ads1015_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ads1015_data *data = iio_priv(indio_dev);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
 	/* power down single shot mode */
-	return ads1015_set_conv_mode(data, ADS1015_SINGLESHOT);
+	ret = ads1015_set_conv_mode(data, ADS1015_SINGLESHOT);
+	if (ret)
+		dev_warn(&client->dev, "Failed to power down (%pe)\n",
+			 ERR_PTR(ret));
 }
 
 #ifdef CONFIG_PM
@@ -1094,22 +1140,51 @@ static const struct dev_pm_ops ads1015_pm_ops = {
 			   ads1015_runtime_resume, NULL)
 };
 
+static const struct ads1015_chip_data ads1015_data = {
+	.channels	= ads1015_channels,
+	.num_channels	= ARRAY_SIZE(ads1015_channels),
+	.info		= &ads1015_info,
+	.data_rate	= ads1015_data_rate,
+	.data_rate_len	= ARRAY_SIZE(ads1015_data_rate),
+	.scale		= ads1015_scale,
+	.scale_len	= ARRAY_SIZE(ads1015_scale),
+	.has_comparator	= true,
+};
+
+static const struct ads1015_chip_data ads1115_data = {
+	.channels	= ads1115_channels,
+	.num_channels	= ARRAY_SIZE(ads1115_channels),
+	.info		= &ads1015_info,
+	.data_rate	= ads1115_data_rate,
+	.data_rate_len	= ARRAY_SIZE(ads1115_data_rate),
+	.scale		= ads1115_scale,
+	.scale_len	= ARRAY_SIZE(ads1115_scale),
+	.has_comparator	= true,
+};
+
+static const struct ads1015_chip_data tla2024_data = {
+	.channels	= tla2024_channels,
+	.num_channels	= ARRAY_SIZE(tla2024_channels),
+	.info		= &tla2024_info,
+	.data_rate	= ads1015_data_rate,
+	.data_rate_len	= ARRAY_SIZE(ads1015_data_rate),
+	.scale		= ads1015_scale,
+	.scale_len	= ARRAY_SIZE(ads1015_scale),
+	.has_comparator	= false,
+};
+
 static const struct i2c_device_id ads1015_id[] = {
-	{"ads1015", ADS1015},
-	{"ads1115", ADS1115},
+	{ "ads1015", (kernel_ulong_t)&ads1015_data },
+	{ "ads1115", (kernel_ulong_t)&ads1115_data },
+	{ "tla2024", (kernel_ulong_t)&tla2024_data },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ads1015_id);
 
 static const struct of_device_id ads1015_of_match[] = {
-	{
-		.compatible = "ti,ads1015",
-		.data = (void *)ADS1015
-	},
-	{
-		.compatible = "ti,ads1115",
-		.data = (void *)ADS1115
-	},
+	{ .compatible = "ti,ads1015", .data = &ads1015_data },
+	{ .compatible = "ti,ads1115", .data = &ads1115_data },
+	{ .compatible = "ti,tla2024", .data = &tla2024_data },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ads1015_of_match);
diff --git a/drivers/iio/adc/ti-ads124s08.c b/drivers/iio/adc/ti-ads124s08.c
index 552c2be8d87a..4ca62121f0d1 100644
--- a/drivers/iio/adc/ti-ads124s08.c
+++ b/drivers/iio/adc/ti-ads124s08.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0
 /* TI ADS124S0X chip family driver
- * Copyright (C) 2018 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2018 Texas Instruments Incorporated - https://www.ti.com/
  */
 
 #include <linux/err.h>
@@ -8,8 +8,7 @@
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_gpio.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 
@@ -22,6 +21,8 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 /* Commands */
 #define ADS124S08_CMD_NOP	0x00
 #define ADS124S08_CMD_WAKEUP	0x02
@@ -97,7 +98,15 @@ struct ads124s_private {
 	struct gpio_desc *reset_gpio;
 	struct spi_device *spi;
 	struct mutex lock;
-	u8 data[5] ____cacheline_aligned;
+	/*
+	 * Used to correctly align data.
+	 * Ensure timestamp is naturally aligned.
+	 * Note that the full buffer length may not be needed if not
+	 * all channels are enabled, as long as the alignment of the
+	 * timestamp is maintained.
+	 */
+	u32 buffer[ADS124S08_MAX_CHANNELS + sizeof(s64)/sizeof(u32)] __aligned(8);
+	u8 data[5] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define ADS124S08_CHAN(index)					\
@@ -184,11 +193,10 @@ static int ads124s_reset(struct iio_dev *indio_dev)
 	return 0;
 };
 
-static int ads124s_read(struct iio_dev *indio_dev, unsigned int chan)
+static int ads124s_read(struct iio_dev *indio_dev)
 {
 	struct ads124s_private *priv = iio_priv(indio_dev);
 	int ret;
-	u32 tmp;
 	struct spi_transfer t[] = {
 		{
 			.tx_buf = &priv->data[0],
@@ -208,9 +216,7 @@ static int ads124s_read(struct iio_dev *indio_dev, unsigned int chan)
 	if (ret < 0)
 		return ret;
 
-	tmp = priv->data[2] << 16 | priv->data[3] << 8 | priv->data[4];
-
-	return tmp;
+	return get_unaligned_be24(&priv->data[2]);
 }
 
 static int ads124s_read_raw(struct iio_dev *indio_dev,
@@ -236,7 +242,7 @@ static int ads124s_read_raw(struct iio_dev *indio_dev,
 			goto out;
 		}
 
-		ret = ads124s_read(indio_dev, chan->channel);
+		ret = ads124s_read(indio_dev);
 		if (ret < 0) {
 			dev_err(&priv->spi->dev, "Read ADC failed\n");
 			goto out;
@@ -270,7 +276,6 @@ static irqreturn_t ads124s_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ads124s_private *priv = iio_priv(indio_dev);
-	u32 buffer[ADS124S08_MAX_CHANNELS + sizeof(s64)/sizeof(u16)];
 	int scan_index, j = 0;
 	int ret;
 
@@ -285,7 +290,7 @@ static irqreturn_t ads124s_trigger_handler(int irq, void *p)
 		if (ret)
 			dev_err(&priv->spi->dev, "Start ADC conversions failed\n");
 
-		buffer[j] = ads124s_read(indio_dev, scan_index);
+		priv->buffer[j] = ads124s_read(indio_dev);
 		ret = ads124s_write_cmd(indio_dev, ADS124S08_STOP_CONV);
 		if (ret)
 			dev_err(&priv->spi->dev, "Stop ADC conversions failed\n");
@@ -293,7 +298,7 @@ static irqreturn_t ads124s_trigger_handler(int irq, void *p)
 		j++;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, priv->buffer,
 			pf->timestamp);
 
 	iio_trigger_notify_done(indio_dev->trig);
@@ -321,13 +326,9 @@ static int ads124s_probe(struct spi_device *spi)
 
 	ads124s_priv->chip_info = &ads124s_chip_info_tbl[spi_id->driver_data];
 
-	spi_set_drvdata(spi, indio_dev);
-
 	ads124s_priv->spi = spi;
 
 	indio_dev->name = spi_id->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ads124s_priv->chip_info->channels;
 	indio_dev->num_channels = ads124s_priv->chip_info->num_channels;
diff --git a/drivers/iio/adc/ti-ads131e08.c b/drivers/iio/adc/ti-ads131e08.c
new file mode 100644
index 000000000000..5235a93f28bc
--- /dev/null
+++ b/drivers/iio/adc/ti-ads131e08.c
@@ -0,0 +1,940 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments ADS131E0x 4-, 6- and 8-Channel ADCs
+ *
+ * Copyright (c) 2020 AVL DiTEST GmbH
+ *   Tomislav Denis <tomislav.denis@avl.com>
+ *
+ * Datasheet: https://www.ti.com/lit/ds/symlink/ads131e08.pdf
+ */
+
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <asm/unaligned.h>
+
+/* Commands */
+#define ADS131E08_CMD_RESET		0x06
+#define ADS131E08_CMD_START		0x08
+#define ADS131E08_CMD_STOP		0x0A
+#define ADS131E08_CMD_OFFSETCAL		0x1A
+#define ADS131E08_CMD_SDATAC		0x11
+#define ADS131E08_CMD_RDATA		0x12
+#define ADS131E08_CMD_RREG(r)		(BIT(5) | (r & GENMASK(4, 0)))
+#define ADS131E08_CMD_WREG(r)		(BIT(6) | (r & GENMASK(4, 0)))
+
+/* Registers */
+#define ADS131E08_ADR_CFG1R		0x01
+#define ADS131E08_ADR_CFG3R		0x03
+#define ADS131E08_ADR_CH0R		0x05
+
+/* Configuration register 1 */
+#define ADS131E08_CFG1R_DR_MASK		GENMASK(2, 0)
+
+/* Configuration register 3 */
+#define ADS131E08_CFG3R_PDB_REFBUF_MASK	BIT(7)
+#define ADS131E08_CFG3R_VREF_4V_MASK	BIT(5)
+
+/* Channel settings register */
+#define ADS131E08_CHR_GAIN_MASK		GENMASK(6, 4)
+#define ADS131E08_CHR_MUX_MASK		GENMASK(2, 0)
+#define ADS131E08_CHR_PWD_MASK		BIT(7)
+
+/* ADC  misc */
+#define ADS131E08_DEFAULT_DATA_RATE	1
+#define ADS131E08_DEFAULT_PGA_GAIN	1
+#define ADS131E08_DEFAULT_MUX		0
+
+#define ADS131E08_VREF_2V4_mV		2400
+#define ADS131E08_VREF_4V_mV		4000
+
+#define ADS131E08_WAIT_RESET_CYCLES	18
+#define ADS131E08_WAIT_SDECODE_CYCLES	4
+#define ADS131E08_WAIT_OFFSETCAL_MS	153
+#define ADS131E08_MAX_SETTLING_TIME_MS	6
+
+#define ADS131E08_NUM_STATUS_BYTES	3
+#define ADS131E08_NUM_DATA_BYTES_MAX	24
+#define ADS131E08_NUM_DATA_BYTES(dr)	(((dr) >= 32) ? 2 : 3)
+#define ADS131E08_NUM_DATA_BITS(dr)	(ADS131E08_NUM_DATA_BYTES(dr) * 8)
+#define ADS131E08_NUM_STORAGE_BYTES	4
+
+enum ads131e08_ids {
+	ads131e04,
+	ads131e06,
+	ads131e08,
+};
+
+struct ads131e08_info {
+	unsigned int max_channels;
+	const char *name;
+};
+
+struct ads131e08_channel_config {
+	unsigned int pga_gain;
+	unsigned int mux;
+};
+
+struct ads131e08_state {
+	const struct ads131e08_info *info;
+	struct spi_device *spi;
+	struct iio_trigger *trig;
+	struct clk *adc_clk;
+	struct regulator *vref_reg;
+	struct ads131e08_channel_config *channel_config;
+	unsigned int data_rate;
+	unsigned int vref_mv;
+	unsigned int sdecode_delay_us;
+	unsigned int reset_delay_us;
+	unsigned int readback_len;
+	struct completion completion;
+	struct {
+		u8 data[ADS131E08_NUM_DATA_BYTES_MAX];
+		s64 ts __aligned(8);
+	} tmp_buf;
+
+	u8 tx_buf[3] __aligned(IIO_DMA_MINALIGN);
+	/*
+	 * Add extra one padding byte to be able to access the last channel
+	 * value using u32 pointer
+	 */
+	u8 rx_buf[ADS131E08_NUM_STATUS_BYTES +
+		ADS131E08_NUM_DATA_BYTES_MAX + 1];
+};
+
+static const struct ads131e08_info ads131e08_info_tbl[] = {
+	[ads131e04] = {
+		.max_channels = 4,
+		.name = "ads131e04",
+	},
+	[ads131e06] = {
+		.max_channels = 6,
+		.name = "ads131e06",
+	},
+	[ads131e08] = {
+		.max_channels = 8,
+		.name = "ads131e08",
+	},
+};
+
+struct ads131e08_data_rate_desc {
+	unsigned int rate;  /* data rate in kSPS */
+	u8 reg;             /* reg value */
+};
+
+static const struct ads131e08_data_rate_desc ads131e08_data_rate_tbl[] = {
+	{ .rate = 64,   .reg = 0x00 },
+	{ .rate = 32,   .reg = 0x01 },
+	{ .rate = 16,   .reg = 0x02 },
+	{ .rate = 8,    .reg = 0x03 },
+	{ .rate = 4,    .reg = 0x04 },
+	{ .rate = 2,    .reg = 0x05 },
+	{ .rate = 1,    .reg = 0x06 },
+};
+
+struct ads131e08_pga_gain_desc {
+	unsigned int gain;  /* PGA gain value */
+	u8 reg;             /* field value */
+};
+
+static const struct ads131e08_pga_gain_desc ads131e08_pga_gain_tbl[] = {
+	{ .gain = 1,   .reg = 0x01 },
+	{ .gain = 2,   .reg = 0x02 },
+	{ .gain = 4,   .reg = 0x04 },
+	{ .gain = 8,   .reg = 0x05 },
+	{ .gain = 12,  .reg = 0x06 },
+};
+
+static const u8 ads131e08_valid_channel_mux_values[] = { 0, 1, 3, 4 };
+
+static int ads131e08_exec_cmd(struct ads131e08_state *st, u8 cmd)
+{
+	int ret;
+
+	ret = spi_write_then_read(st->spi, &cmd, 1, NULL, 0);
+	if (ret)
+		dev_err(&st->spi->dev, "Exec cmd(%02x) failed\n", cmd);
+
+	return ret;
+}
+
+static int ads131e08_read_reg(struct ads131e08_state *st, u8 reg)
+{
+	int ret;
+	struct spi_transfer transfer[] = {
+		{
+			.tx_buf = &st->tx_buf,
+			.len = 2,
+			.delay = {
+				.value = st->sdecode_delay_us,
+				.unit = SPI_DELAY_UNIT_USECS,
+			},
+		}, {
+			.rx_buf = &st->rx_buf,
+			.len = 1,
+		},
+	};
+
+	st->tx_buf[0] = ADS131E08_CMD_RREG(reg);
+	st->tx_buf[1] = 0;
+
+	ret = spi_sync_transfer(st->spi, transfer, ARRAY_SIZE(transfer));
+	if (ret) {
+		dev_err(&st->spi->dev, "Read register failed\n");
+		return ret;
+	}
+
+	return st->rx_buf[0];
+}
+
+static int ads131e08_write_reg(struct ads131e08_state *st, u8 reg, u8 value)
+{
+	int ret;
+	struct spi_transfer transfer[] = {
+		{
+			.tx_buf = &st->tx_buf,
+			.len = 3,
+			.delay = {
+				.value = st->sdecode_delay_us,
+				.unit = SPI_DELAY_UNIT_USECS,
+			},
+		}
+	};
+
+	st->tx_buf[0] = ADS131E08_CMD_WREG(reg);
+	st->tx_buf[1] = 0;
+	st->tx_buf[2] = value;
+
+	ret = spi_sync_transfer(st->spi, transfer, ARRAY_SIZE(transfer));
+	if (ret)
+		dev_err(&st->spi->dev, "Write register failed\n");
+
+	return ret;
+}
+
+static int ads131e08_read_data(struct ads131e08_state *st, int rx_len)
+{
+	int ret;
+	struct spi_transfer transfer[] = {
+		{
+			.tx_buf = &st->tx_buf,
+			.len = 1,
+		}, {
+			.rx_buf = &st->rx_buf,
+			.len = rx_len,
+		},
+	};
+
+	st->tx_buf[0] = ADS131E08_CMD_RDATA;
+
+	ret = spi_sync_transfer(st->spi, transfer, ARRAY_SIZE(transfer));
+	if (ret)
+		dev_err(&st->spi->dev, "Read data failed\n");
+
+	return ret;
+}
+
+static int ads131e08_set_data_rate(struct ads131e08_state *st, int data_rate)
+{
+	int i, reg, ret;
+
+	for (i = 0; i < ARRAY_SIZE(ads131e08_data_rate_tbl); i++) {
+		if (ads131e08_data_rate_tbl[i].rate == data_rate)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(ads131e08_data_rate_tbl)) {
+		dev_err(&st->spi->dev, "invalid data rate value\n");
+		return -EINVAL;
+	}
+
+	reg = ads131e08_read_reg(st, ADS131E08_ADR_CFG1R);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~ADS131E08_CFG1R_DR_MASK;
+	reg |= FIELD_PREP(ADS131E08_CFG1R_DR_MASK,
+		ads131e08_data_rate_tbl[i].reg);
+
+	ret = ads131e08_write_reg(st, ADS131E08_ADR_CFG1R, reg);
+	if (ret)
+		return ret;
+
+	st->data_rate = data_rate;
+	st->readback_len = ADS131E08_NUM_STATUS_BYTES +
+		ADS131E08_NUM_DATA_BYTES(st->data_rate) *
+		st->info->max_channels;
+
+	return 0;
+}
+
+static int ads131e08_pga_gain_to_field_value(struct ads131e08_state *st,
+	unsigned int pga_gain)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ads131e08_pga_gain_tbl); i++) {
+		if (ads131e08_pga_gain_tbl[i].gain == pga_gain)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(ads131e08_pga_gain_tbl)) {
+		dev_err(&st->spi->dev, "invalid PGA gain value\n");
+		return -EINVAL;
+	}
+
+	return ads131e08_pga_gain_tbl[i].reg;
+}
+
+static int ads131e08_set_pga_gain(struct ads131e08_state *st,
+	unsigned int channel, unsigned int pga_gain)
+{
+	int field_value, reg;
+
+	field_value = ads131e08_pga_gain_to_field_value(st, pga_gain);
+	if (field_value < 0)
+		return field_value;
+
+	reg = ads131e08_read_reg(st, ADS131E08_ADR_CH0R + channel);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~ADS131E08_CHR_GAIN_MASK;
+	reg |= FIELD_PREP(ADS131E08_CHR_GAIN_MASK, field_value);
+
+	return ads131e08_write_reg(st, ADS131E08_ADR_CH0R + channel, reg);
+}
+
+static int ads131e08_validate_channel_mux(struct ads131e08_state *st,
+	unsigned int mux)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ads131e08_valid_channel_mux_values); i++) {
+		if (ads131e08_valid_channel_mux_values[i] == mux)
+			break;
+	}
+
+	if (i == ARRAY_SIZE(ads131e08_valid_channel_mux_values)) {
+		dev_err(&st->spi->dev, "invalid channel mux value\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ads131e08_set_channel_mux(struct ads131e08_state *st,
+	unsigned int channel, unsigned int mux)
+{
+	int reg;
+
+	reg = ads131e08_read_reg(st, ADS131E08_ADR_CH0R + channel);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~ADS131E08_CHR_MUX_MASK;
+	reg |= FIELD_PREP(ADS131E08_CHR_MUX_MASK, mux);
+
+	return ads131e08_write_reg(st, ADS131E08_ADR_CH0R + channel, reg);
+}
+
+static int ads131e08_power_down_channel(struct ads131e08_state *st,
+	unsigned int channel, bool value)
+{
+	int reg;
+
+	reg = ads131e08_read_reg(st, ADS131E08_ADR_CH0R + channel);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~ADS131E08_CHR_PWD_MASK;
+	reg |= FIELD_PREP(ADS131E08_CHR_PWD_MASK, value);
+
+	return ads131e08_write_reg(st, ADS131E08_ADR_CH0R + channel, reg);
+}
+
+static int ads131e08_config_reference_voltage(struct ads131e08_state *st)
+{
+	int reg;
+
+	reg = ads131e08_read_reg(st, ADS131E08_ADR_CFG3R);
+	if (reg < 0)
+		return reg;
+
+	reg &= ~ADS131E08_CFG3R_PDB_REFBUF_MASK;
+	if (!st->vref_reg) {
+		reg |= FIELD_PREP(ADS131E08_CFG3R_PDB_REFBUF_MASK, 1);
+		reg &= ~ADS131E08_CFG3R_VREF_4V_MASK;
+		reg |= FIELD_PREP(ADS131E08_CFG3R_VREF_4V_MASK,
+			st->vref_mv == ADS131E08_VREF_4V_mV);
+	}
+
+	return ads131e08_write_reg(st, ADS131E08_ADR_CFG3R, reg);
+}
+
+static int ads131e08_initial_config(struct iio_dev *indio_dev)
+{
+	const struct iio_chan_spec *channel = indio_dev->channels;
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	unsigned long active_channels = 0;
+	int ret, i;
+
+	ret = ads131e08_exec_cmd(st, ADS131E08_CMD_RESET);
+	if (ret)
+		return ret;
+
+	udelay(st->reset_delay_us);
+
+	/* Disable read data in continuous mode (enabled by default) */
+	ret = ads131e08_exec_cmd(st, ADS131E08_CMD_SDATAC);
+	if (ret)
+		return ret;
+
+	ret = ads131e08_set_data_rate(st, ADS131E08_DEFAULT_DATA_RATE);
+	if (ret)
+		return ret;
+
+	ret = ads131e08_config_reference_voltage(st);
+	if (ret)
+		return ret;
+
+	for (i = 0;  i < indio_dev->num_channels; i++) {
+		ret = ads131e08_set_pga_gain(st, channel->channel,
+			st->channel_config[i].pga_gain);
+		if (ret)
+			return ret;
+
+		ret = ads131e08_set_channel_mux(st, channel->channel,
+			st->channel_config[i].mux);
+		if (ret)
+			return ret;
+
+		active_channels |= BIT(channel->channel);
+		channel++;
+	}
+
+	/* Power down unused channels */
+	for_each_clear_bit(i, &active_channels, st->info->max_channels) {
+		ret = ads131e08_power_down_channel(st, i, true);
+		if (ret)
+			return ret;
+	}
+
+	/* Request channel offset calibration */
+	ret = ads131e08_exec_cmd(st, ADS131E08_CMD_OFFSETCAL);
+	if (ret)
+		return ret;
+
+	/*
+	 * Channel offset calibration is triggered with the first START
+	 * command. Since calibration takes more time than settling operation,
+	 * this causes timeout error when command START is sent first
+	 * time (e.g. first call of the ads131e08_read_direct method).
+	 * To avoid this problem offset calibration is triggered here.
+	 */
+	ret = ads131e08_exec_cmd(st, ADS131E08_CMD_START);
+	if (ret)
+		return ret;
+
+	msleep(ADS131E08_WAIT_OFFSETCAL_MS);
+
+	return ads131e08_exec_cmd(st, ADS131E08_CMD_STOP);
+}
+
+static int ads131e08_pool_data(struct ads131e08_state *st)
+{
+	unsigned long timeout;
+	int ret;
+
+	reinit_completion(&st->completion);
+
+	ret = ads131e08_exec_cmd(st, ADS131E08_CMD_START);
+	if (ret)
+		return ret;
+
+	timeout = msecs_to_jiffies(ADS131E08_MAX_SETTLING_TIME_MS);
+	ret = wait_for_completion_timeout(&st->completion, timeout);
+	if (!ret)
+		return -ETIMEDOUT;
+
+	ret = ads131e08_read_data(st, st->readback_len);
+	if (ret)
+		return ret;
+
+	return ads131e08_exec_cmd(st, ADS131E08_CMD_STOP);
+}
+
+static int ads131e08_read_direct(struct iio_dev *indio_dev,
+	struct iio_chan_spec const *channel, int *value)
+{
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	u8 num_bits, *src;
+	int ret;
+
+	ret = ads131e08_pool_data(st);
+	if (ret)
+		return ret;
+
+	src = st->rx_buf + ADS131E08_NUM_STATUS_BYTES +
+		channel->channel * ADS131E08_NUM_DATA_BYTES(st->data_rate);
+
+	num_bits = ADS131E08_NUM_DATA_BITS(st->data_rate);
+	*value = sign_extend32(get_unaligned_be32(src) >> (32 - num_bits), num_bits - 1);
+
+	return 0;
+}
+
+static int ads131e08_read_raw(struct iio_dev *indio_dev,
+	struct iio_chan_spec const *channel, int *value,
+	int *value2, long mask)
+{
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = ads131e08_read_direct(indio_dev, channel, value);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		if (st->vref_reg) {
+			ret = regulator_get_voltage(st->vref_reg);
+			if (ret < 0)
+				return ret;
+
+			*value = ret / 1000;
+		} else {
+			*value = st->vref_mv;
+		}
+
+		*value /= st->channel_config[channel->address].pga_gain;
+		*value2 = ADS131E08_NUM_DATA_BITS(st->data_rate) - 1;
+
+		return IIO_VAL_FRACTIONAL_LOG2;
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*value = st->data_rate;
+
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ads131e08_write_raw(struct iio_dev *indio_dev,
+	struct iio_chan_spec const *channel, int value,
+	int value2, long mask)
+{
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = ads131e08_set_data_rate(st, value);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("1 2 4 8 16 32 64");
+
+static struct attribute *ads131e08_attributes[] = {
+	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group ads131e08_attribute_group = {
+	.attrs = ads131e08_attributes,
+};
+
+static int ads131e08_debugfs_reg_access(struct iio_dev *indio_dev,
+	unsigned int reg, unsigned int writeval, unsigned int *readval)
+{
+	struct ads131e08_state *st = iio_priv(indio_dev);
+
+	if (readval) {
+		int ret = ads131e08_read_reg(st, reg);
+		*readval = ret;
+		return ret;
+	}
+
+	return ads131e08_write_reg(st, reg, writeval);
+}
+
+static const struct iio_info ads131e08_iio_info = {
+	.read_raw = ads131e08_read_raw,
+	.write_raw = ads131e08_write_raw,
+	.attrs = &ads131e08_attribute_group,
+	.debugfs_reg_access = &ads131e08_debugfs_reg_access,
+};
+
+static int ads131e08_set_trigger_state(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	u8 cmd = state ? ADS131E08_CMD_START : ADS131E08_CMD_STOP;
+
+	return ads131e08_exec_cmd(st, cmd);
+}
+
+static const struct iio_trigger_ops ads131e08_trigger_ops = {
+	.set_trigger_state = &ads131e08_set_trigger_state,
+	.validate_device = &iio_trigger_validate_own_device,
+};
+
+static irqreturn_t ads131e08_trigger_handler(int irq, void *private)
+{
+	struct iio_poll_func *pf = private;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	unsigned int chn, i = 0;
+	u8 *src, *dest;
+	int ret;
+
+	/*
+	 * The number of data bits per channel depends on the data rate.
+	 * For 32 and 64 ksps data rates, number of data bits per channel
+	 * is 16. This case is not compliant with used (fixed) scan element
+	 * type (be:s24/32>>8). So we use a little tweak to pack properly
+	 * 16 bits of data into the buffer.
+	 */
+	unsigned int num_bytes = ADS131E08_NUM_DATA_BYTES(st->data_rate);
+	u8 tweek_offset = num_bytes == 2 ? 1 : 0;
+
+	if (iio_trigger_using_own(indio_dev))
+		ret = ads131e08_read_data(st, st->readback_len);
+	else
+		ret = ads131e08_pool_data(st);
+
+	if (ret)
+		goto out;
+
+	for_each_set_bit(chn, indio_dev->active_scan_mask, indio_dev->masklength) {
+		src = st->rx_buf + ADS131E08_NUM_STATUS_BYTES + chn * num_bytes;
+		dest = st->tmp_buf.data + i * ADS131E08_NUM_STORAGE_BYTES;
+
+		/*
+		 * Tweek offset is 0:
+		 * +---+---+---+---+
+		 * |D0 |D1 |D2 | X | (3 data bytes)
+		 * +---+---+---+---+
+		 *  a+0 a+1 a+2 a+3
+		 *
+		 * Tweek offset is 1:
+		 * +---+---+---+---+
+		 * |P0 |D0 |D1 | X | (one padding byte and 2 data bytes)
+		 * +---+---+---+---+
+		 *  a+0 a+1 a+2 a+3
+		 */
+		memcpy(dest + tweek_offset, src, num_bytes);
+
+		/*
+		 * Data conversion from 16 bits of data to 24 bits of data
+		 * is done by sign extension (properly filling padding byte).
+		 */
+		if (tweek_offset)
+			*dest = *src & BIT(7) ? 0xff : 0x00;
+
+		i++;
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, st->tmp_buf.data,
+		iio_get_time_ns(indio_dev));
+
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t ads131e08_interrupt(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct ads131e08_state *st = iio_priv(indio_dev);
+
+	if (iio_buffer_enabled(indio_dev) && iio_trigger_using_own(indio_dev))
+		iio_trigger_poll(st->trig);
+	else
+		complete(&st->completion);
+
+	return IRQ_HANDLED;
+}
+
+static int ads131e08_alloc_channels(struct iio_dev *indio_dev)
+{
+	struct ads131e08_state *st = iio_priv(indio_dev);
+	struct ads131e08_channel_config *channel_config;
+	struct device *dev = &st->spi->dev;
+	struct iio_chan_spec *channels;
+	struct fwnode_handle *node;
+	unsigned int channel, tmp;
+	int num_channels, i, ret;
+
+	ret = device_property_read_u32(dev, "ti,vref-internal", &tmp);
+	if (ret)
+		tmp = 0;
+
+	switch (tmp) {
+	case 0:
+		st->vref_mv = ADS131E08_VREF_2V4_mV;
+		break;
+	case 1:
+		st->vref_mv = ADS131E08_VREF_4V_mV;
+		break;
+	default:
+		dev_err(&st->spi->dev, "invalid internal voltage reference\n");
+		return -EINVAL;
+	}
+
+	num_channels = device_get_child_node_count(dev);
+	if (num_channels == 0) {
+		dev_err(&st->spi->dev, "no channel children\n");
+		return -ENODEV;
+	}
+
+	if (num_channels > st->info->max_channels) {
+		dev_err(&st->spi->dev, "num of channel children out of range\n");
+		return -EINVAL;
+	}
+
+	channels = devm_kcalloc(&st->spi->dev, num_channels,
+		sizeof(*channels), GFP_KERNEL);
+	if (!channels)
+		return -ENOMEM;
+
+	channel_config = devm_kcalloc(&st->spi->dev, num_channels,
+		sizeof(*channel_config), GFP_KERNEL);
+	if (!channel_config)
+		return -ENOMEM;
+
+	i = 0;
+	device_for_each_child_node(dev, node) {
+		ret = fwnode_property_read_u32(node, "reg", &channel);
+		if (ret)
+			goto err_child_out;
+
+		ret = fwnode_property_read_u32(node, "ti,gain", &tmp);
+		if (ret) {
+			channel_config[i].pga_gain = ADS131E08_DEFAULT_PGA_GAIN;
+		} else {
+			ret = ads131e08_pga_gain_to_field_value(st, tmp);
+			if (ret < 0)
+				goto err_child_out;
+
+			channel_config[i].pga_gain = tmp;
+		}
+
+		ret = fwnode_property_read_u32(node, "ti,mux", &tmp);
+		if (ret) {
+			channel_config[i].mux = ADS131E08_DEFAULT_MUX;
+		} else {
+			ret = ads131e08_validate_channel_mux(st, tmp);
+			if (ret)
+				goto err_child_out;
+
+			channel_config[i].mux = tmp;
+		}
+
+		channels[i].type = IIO_VOLTAGE;
+		channels[i].indexed = 1;
+		channels[i].channel = channel;
+		channels[i].address = i;
+		channels[i].info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+						BIT(IIO_CHAN_INFO_SCALE);
+		channels[i].info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ);
+		channels[i].scan_index = channel;
+		channels[i].scan_type.sign = 's';
+		channels[i].scan_type.realbits = 24;
+		channels[i].scan_type.storagebits = 32;
+		channels[i].scan_type.shift = 8;
+		channels[i].scan_type.endianness = IIO_BE;
+		i++;
+	}
+
+	indio_dev->channels = channels;
+	indio_dev->num_channels = num_channels;
+	st->channel_config = channel_config;
+
+	return 0;
+
+err_child_out:
+	fwnode_handle_put(node);
+	return ret;
+}
+
+static void ads131e08_regulator_disable(void *data)
+{
+	struct ads131e08_state *st = data;
+
+	regulator_disable(st->vref_reg);
+}
+
+static int ads131e08_probe(struct spi_device *spi)
+{
+	const struct ads131e08_info *info;
+	struct ads131e08_state *st;
+	struct iio_dev *indio_dev;
+	unsigned long adc_clk_hz;
+	unsigned long adc_clk_ns;
+	int ret;
+
+	info = device_get_match_data(&spi->dev);
+	if (!info) {
+		dev_err(&spi->dev, "failed to get match data\n");
+		return -ENODEV;
+	}
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev) {
+		dev_err(&spi->dev, "failed to allocate IIO device\n");
+		return -ENOMEM;
+	}
+
+	st = iio_priv(indio_dev);
+	st->info = info;
+	st->spi = spi;
+
+	ret = ads131e08_alloc_channels(indio_dev);
+	if (ret)
+		return ret;
+
+	indio_dev->name = st->info->name;
+	indio_dev->info = &ads131e08_iio_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	init_completion(&st->completion);
+
+	if (spi->irq) {
+		ret = devm_request_irq(&spi->dev, spi->irq,
+			ads131e08_interrupt,
+			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+			spi->dev.driver->name, indio_dev);
+		if (ret)
+			return dev_err_probe(&spi->dev, ret,
+					     "request irq failed\n");
+	} else {
+		dev_err(&spi->dev, "data ready IRQ missing\n");
+		return -ENODEV;
+	}
+
+	st->trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",
+		indio_dev->name, iio_device_id(indio_dev));
+	if (!st->trig) {
+		dev_err(&spi->dev, "failed to allocate IIO trigger\n");
+		return -ENOMEM;
+	}
+
+	st->trig->ops = &ads131e08_trigger_ops;
+	st->trig->dev.parent = &spi->dev;
+	iio_trigger_set_drvdata(st->trig, indio_dev);
+	ret = devm_iio_trigger_register(&spi->dev, st->trig);
+	if (ret) {
+		dev_err(&spi->dev, "failed to register IIO trigger\n");
+		return -ENOMEM;
+	}
+
+	indio_dev->trig = iio_trigger_get(st->trig);
+
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+		NULL, &ads131e08_trigger_handler, NULL);
+	if (ret) {
+		dev_err(&spi->dev, "failed to setup IIO buffer\n");
+		return ret;
+	}
+
+	st->vref_reg = devm_regulator_get_optional(&spi->dev, "vref");
+	if (!IS_ERR(st->vref_reg)) {
+		ret = regulator_enable(st->vref_reg);
+		if (ret) {
+			dev_err(&spi->dev,
+				"failed to enable external vref supply\n");
+			return ret;
+		}
+
+		ret = devm_add_action_or_reset(&spi->dev, ads131e08_regulator_disable, st);
+		if (ret)
+			return ret;
+	} else {
+		if (PTR_ERR(st->vref_reg) != -ENODEV)
+			return PTR_ERR(st->vref_reg);
+
+		st->vref_reg = NULL;
+	}
+
+	st->adc_clk = devm_clk_get_enabled(&spi->dev, "adc-clk");
+	if (IS_ERR(st->adc_clk))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->adc_clk),
+				     "failed to get the ADC clock\n");
+
+	adc_clk_hz = clk_get_rate(st->adc_clk);
+	if (!adc_clk_hz) {
+		dev_err(&spi->dev, "failed to get the ADC clock rate\n");
+		return  -EINVAL;
+	}
+
+	adc_clk_ns = NSEC_PER_SEC / adc_clk_hz;
+	st->sdecode_delay_us = DIV_ROUND_UP(
+		ADS131E08_WAIT_SDECODE_CYCLES * adc_clk_ns, NSEC_PER_USEC);
+	st->reset_delay_us = DIV_ROUND_UP(
+		ADS131E08_WAIT_RESET_CYCLES * adc_clk_ns, NSEC_PER_USEC);
+
+	ret = ads131e08_initial_config(indio_dev);
+	if (ret) {
+		dev_err(&spi->dev, "initial configuration failed\n");
+		return ret;
+	}
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id ads131e08_of_match[] = {
+	{ .compatible = "ti,ads131e04",
+	  .data = &ads131e08_info_tbl[ads131e04], },
+	{ .compatible = "ti,ads131e06",
+	  .data = &ads131e08_info_tbl[ads131e06], },
+	{ .compatible = "ti,ads131e08",
+	  .data = &ads131e08_info_tbl[ads131e08], },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ads131e08_of_match);
+
+static struct spi_driver ads131e08_driver = {
+	.driver = {
+		.name = "ads131e08",
+		.of_match_table = ads131e08_of_match,
+	},
+	.probe = ads131e08_probe,
+};
+module_spi_driver(ads131e08_driver);
+
+MODULE_AUTHOR("Tomislav Denis <tomislav.denis@avl.com>");
+MODULE_DESCRIPTION("Driver for ADS131E0x ADC family");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/ti-ads7950.c b/drivers/iio/adc/ti-ads7950.c
index f9edc1207f75..2cc9a9bd9db6 100644
--- a/drivers/iio/adc/ti-ads7950.c
+++ b/drivers/iio/adc/ti-ads7950.c
@@ -9,7 +9,7 @@
  * Copyright 2012 CS Systemes d'Information
  *
  * And also on hwmon/ads79xx.c
- * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2013 Texas Instruments Incorporated - https://www.ti.com/
  *	Nishanth Menon
  */
 
@@ -102,11 +102,11 @@ struct ti_ads7950_state {
 	unsigned int		gpio_cmd_settings_bitmask;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	u16 rx_buf[TI_ADS7950_MAX_CHAN + 2 + TI_ADS7950_TIMESTAMP_SIZE]
-							____cacheline_aligned;
+		__aligned(IIO_DMA_MINALIGN);
 	u16 tx_buf[TI_ADS7950_MAX_CHAN + 2];
 	u16 single_tx;
 	u16 single_rx;
@@ -557,7 +557,6 @@ static int ti_ads7950_probe(struct spi_device *spi)
 	info = &ti_ads7950_chip_info[spi_get_device_id(spi)->driver_data];
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = info->channels;
 	indio_dev->num_channels = info->num_channels;
@@ -569,7 +568,6 @@ static int ti_ads7950_probe(struct spi_device *spi)
 	st->ring_xfer.tx_buf = &st->tx_buf[0];
 	st->ring_xfer.rx_buf = &st->rx_buf[0];
 	/* len will be set later */
-	st->ring_xfer.cs_change = true;
 
 	spi_message_add_tail(&st->ring_xfer, &st->ring_msg);
 
@@ -602,8 +600,8 @@ static int ti_ads7950_probe(struct spi_device *spi)
 
 	st->reg = devm_regulator_get(&spi->dev, "vref");
 	if (IS_ERR(st->reg)) {
-		dev_err(&spi->dev, "Failed to get regulator \"vref\"\n");
-		ret = PTR_ERR(st->reg);
+		ret = dev_err_probe(&spi->dev, PTR_ERR(st->reg),
+				     "Failed to get regulator \"vref\"\n");
 		goto error_destroy_mutex;
 	}
 
@@ -664,7 +662,7 @@ error_destroy_mutex:
 	return ret;
 }
 
-static int ti_ads7950_remove(struct spi_device *spi)
+static void ti_ads7950_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ti_ads7950_state *st = iio_priv(indio_dev);
@@ -674,8 +672,6 @@ static int ti_ads7950_remove(struct spi_device *spi)
 	iio_triggered_buffer_cleanup(indio_dev);
 	regulator_disable(st->reg);
 	mutex_destroy(&st->slock);
-
-	return 0;
 }
 
 static const struct spi_device_id ti_ads7950_id[] = {
diff --git a/drivers/iio/adc/ti-ads8344.c b/drivers/iio/adc/ti-ads8344.c
index 9a460807d46d..bbd85cb47f81 100644
--- a/drivers/iio/adc/ti-ads8344.c
+++ b/drivers/iio/adc/ti-ads8344.c
@@ -4,7 +4,7 @@
  *
  * Author: Gregory CLEMENT <gregory.clement@bootlin.com>
  *
- * Datasheet: http://www.ti.com/lit/ds/symlink/ads8344.pdf
+ * Datasheet: https://www.ti.com/lit/ds/symlink/ads8344.pdf
  */
 
 #include <linux/delay.h>
@@ -28,20 +28,21 @@ struct ads8344 {
 	 */
 	struct mutex lock;
 
-	u8 tx_buf ____cacheline_aligned;
-	u16 rx_buf;
+	u8 tx_buf __aligned(IIO_DMA_MINALIGN);
+	u8 rx_buf[3];
 };
 
-#define ADS8344_VOLTAGE_CHANNEL(chan, si)				\
+#define ADS8344_VOLTAGE_CHANNEL(chan, addr)				\
 	{								\
 		.type = IIO_VOLTAGE,					\
 		.indexed = 1,						\
 		.channel = chan,					\
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+		.address = addr,					\
 	}
 
-#define ADS8344_VOLTAGE_CHANNEL_DIFF(chan1, chan2, si)			\
+#define ADS8344_VOLTAGE_CHANNEL_DIFF(chan1, chan2, addr)		\
 	{								\
 		.type = IIO_VOLTAGE,					\
 		.indexed = 1,						\
@@ -50,6 +51,7 @@ struct ads8344 {
 		.differential = 1,					\
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+		.address = addr,					\
 	}
 
 static const struct iio_chan_spec ads8344_channels[] = {
@@ -89,11 +91,11 @@ static int ads8344_adc_conversion(struct ads8344 *adc, int channel,
 
 	udelay(9);
 
-	ret = spi_read(spi, &adc->rx_buf, 2);
+	ret = spi_read(spi, adc->rx_buf, sizeof(adc->rx_buf));
 	if (ret)
 		return ret;
 
-	return adc->rx_buf;
+	return adc->rx_buf[0] << 9 | adc->rx_buf[1] << 1 | adc->rx_buf[2] >> 7;
 }
 
 static int ads8344_read_raw(struct iio_dev *iio,
@@ -105,7 +107,7 @@ static int ads8344_read_raw(struct iio_dev *iio,
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
 		mutex_lock(&adc->lock);
-		*value = ads8344_adc_conversion(adc, channel->scan_index,
+		*value = ads8344_adc_conversion(adc, channel->address,
 						channel->differential);
 		mutex_unlock(&adc->lock);
 		if (*value < 0)
@@ -131,6 +133,11 @@ static const struct iio_info ads8344_info = {
 	.read_raw = ads8344_read_raw,
 };
 
+static void ads8344_reg_disable(void *data)
+{
+	regulator_disable(data);
+}
+
 static int ads8344_probe(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev;
@@ -146,8 +153,6 @@ static int ads8344_probe(struct spi_device *spi)
 	mutex_init(&adc->lock);
 
 	indio_dev->name = dev_name(&spi->dev);
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->info = &ads8344_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ads8344_channels;
@@ -161,26 +166,11 @@ static int ads8344_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	spi_set_drvdata(spi, indio_dev);
-
-	ret = iio_device_register(indio_dev);
-	if (ret) {
-		regulator_disable(adc->reg);
+	ret = devm_add_action_or_reset(&spi->dev, ads8344_reg_disable, adc->reg);
+	if (ret)
 		return ret;
-	}
-
-	return 0;
-}
-
-static int ads8344_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ads8344 *adc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	regulator_disable(adc->reg);
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct of_device_id ads8344_of_match[] = {
@@ -195,7 +185,6 @@ static struct spi_driver ads8344_driver = {
 		.of_match_table = ads8344_of_match,
 	},
 	.probe = ads8344_probe,
-	.remove = ads8344_remove,
 };
 module_spi_driver(ads8344_driver);
 
diff --git a/drivers/iio/adc/ti-ads8688.c b/drivers/iio/adc/ti-ads8688.c
index 14fe7c320b52..ef06a897421a 100644
--- a/drivers/iio/adc/ti-ads8688.c
+++ b/drivers/iio/adc/ti-ads8688.c
@@ -71,7 +71,7 @@ struct ads8688_state {
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[2] ____cacheline_aligned;
+	} data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ads8688_id {
@@ -281,12 +281,10 @@ static int ads8688_write_reg_range(struct iio_dev *indio_dev,
 				   enum ads8688_range range)
 {
 	unsigned int tmp;
-	int ret;
 
 	tmp = ADS8688_PROG_REG_RANGE_CH(chan->channel);
-	ret = ads8688_prog_write(indio_dev, tmp, range);
 
-	return ret;
+	return ads8688_prog_write(indio_dev, tmp, range);
 }
 
 static int ads8688_write_raw(struct iio_dev *indio_dev,
@@ -383,7 +381,8 @@ static irqreturn_t ads8688_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
-	u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)];
+	/* Ensure naturally aligned timestamp */
+	u16 buffer[ADS8688_MAX_CHANNELS + sizeof(s64)/sizeof(u16)] __aligned(8);
 	int i, j = 0;
 
 	for (i = 0; i < indio_dev->masklength; i++) {
@@ -449,8 +448,6 @@ static int ads8688_probe(struct spi_device *spi)
 	st->spi = spi;
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
@@ -482,7 +479,7 @@ err_regulator_disable:
 	return ret;
 }
 
-static int ads8688_remove(struct spi_device *spi)
+static void ads8688_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ads8688_state *st = iio_priv(indio_dev);
@@ -492,8 +489,6 @@ static int ads8688_remove(struct spi_device *spi)
 
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ads8688_id[] = {
@@ -513,6 +508,7 @@ MODULE_DEVICE_TABLE(of, ads8688_of_match);
 static struct spi_driver ads8688_driver = {
 	.driver = {
 		.name	= "ads8688",
+		.of_match_table = ads8688_of_match,
 	},
 	.probe		= ads8688_probe,
 	.remove		= ads8688_remove,
diff --git a/drivers/iio/adc/ti-tlc4541.c b/drivers/iio/adc/ti-tlc4541.c
index 4965246808bd..30f629a553a1 100644
--- a/drivers/iio/adc/ti-tlc4541.c
+++ b/drivers/iio/adc/ti-tlc4541.c
@@ -5,8 +5,8 @@
  * Copyright (C) 2017 Phil Reid
  *
  * Datasheets can be found here:
- * http://www.ti.com/lit/gpn/tlc3541
- * http://www.ti.com/lit/gpn/tlc4541
+ * https://www.ti.com/lit/gpn/tlc3541
+ * https://www.ti.com/lit/gpn/tlc4541
  *
  * The tlc4541 requires 24 clock cycles to start a transfer.
  * Conversion then takes 2.94us to complete before data is ready
@@ -24,6 +24,7 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/spi/spi.h>
@@ -36,12 +37,12 @@ struct tlc4541_state {
 	struct spi_message              scan_single_msg;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * 2 bytes data + 6 bytes padding + 8 bytes timestamp when
 	 * call iio_push_to_buffers_with_timestamp.
 	 */
-	__be16                          rx_buf[8] ____cacheline_aligned;
+	__be16                          rx_buf[8] __aligned(IIO_DMA_MINALIGN);
 };
 
 struct tlc4541_chip_info {
@@ -177,7 +178,6 @@ static int tlc4541_probe(struct spi_device *spi)
 	info = &tlc4541_chip_info[spi_get_device_id(spi)->driver_data];
 
 	indio_dev->name = spi_get_device_id(spi)->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = info->channels;
 	indio_dev->num_channels = info->num_channels;
@@ -189,7 +189,8 @@ static int tlc4541_probe(struct spi_device *spi)
 	/* Setup default message */
 	st->scan_single_xfer[0].rx_buf = &st->rx_buf[0];
 	st->scan_single_xfer[0].len = 3;
-	st->scan_single_xfer[1].delay_usecs = 3;
+	st->scan_single_xfer[1].delay.value = 3;
+	st->scan_single_xfer[1].delay.unit = SPI_DELAY_UNIT_NSECS;
 	st->scan_single_xfer[2].rx_buf = &st->rx_buf[0];
 	st->scan_single_xfer[2].len = 2;
 
@@ -223,7 +224,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int tlc4541_remove(struct spi_device *spi)
+static void tlc4541_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct tlc4541_state *st = iio_priv(indio_dev);
@@ -231,18 +232,14 @@ static int tlc4541_remove(struct spi_device *spi)
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	regulator_disable(st->reg);
-
-	return 0;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id tlc4541_dt_ids[] = {
 	{ .compatible = "ti,tlc3541", },
 	{ .compatible = "ti,tlc4541", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, tlc4541_dt_ids);
-#endif
 
 static const struct spi_device_id tlc4541_id[] = {
 	{"tlc3541", TLC3541},
@@ -254,7 +251,7 @@ MODULE_DEVICE_TABLE(spi, tlc4541_id);
 static struct spi_driver tlc4541_driver = {
 	.driver = {
 		.name   = "tlc4541",
-		.of_match_table = of_match_ptr(tlc4541_dt_ids),
+		.of_match_table = tlc4541_dt_ids,
 	},
 	.probe          = tlc4541_probe,
 	.remove         = tlc4541_remove,
diff --git a/drivers/iio/adc/ti-tsc2046.c b/drivers/iio/adc/ti-tsc2046.c
new file mode 100644
index 000000000000..1bbb51a6683c
--- /dev/null
+++ b/drivers/iio/adc/ti-tsc2046.c
@@ -0,0 +1,912 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Texas Instruments TSC2046 SPI ADC driver
+ *
+ * Copyright (c) 2021 Oleksij Rempel <kernel@pengutronix.de>, Pengutronix
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger.h>
+
+/*
+ * The PENIRQ of TSC2046 controller is implemented as level shifter attached to
+ * the X+ line. If voltage of the X+ line reaches a specific level the IRQ will
+ * be activated or deactivated.
+ * To make this kind of IRQ reusable as trigger following additions were
+ * implemented:
+ * - rate limiting:
+ *   For typical touchscreen use case, we need to trigger about each 10ms.
+ * - hrtimer:
+ *   Continue triggering at least once after the IRQ was deactivated. Then
+ *   deactivate this trigger to stop sampling in order to reduce power
+ *   consumption.
+ */
+
+#define TI_TSC2046_NAME				"tsc2046"
+
+/* This driver doesn't aim at the peak continuous sample rate */
+#define	TI_TSC2046_MAX_SAMPLE_RATE		125000
+#define	TI_TSC2046_SAMPLE_BITS \
+	BITS_PER_TYPE(struct tsc2046_adc_atom)
+#define	TI_TSC2046_MAX_CLK_FREQ \
+	(TI_TSC2046_MAX_SAMPLE_RATE * TI_TSC2046_SAMPLE_BITS)
+
+#define TI_TSC2046_SAMPLE_INTERVAL_US		10000
+
+#define TI_TSC2046_START			BIT(7)
+#define TI_TSC2046_ADDR				GENMASK(6, 4)
+#define TI_TSC2046_ADDR_TEMP1			7
+#define TI_TSC2046_ADDR_AUX			6
+#define TI_TSC2046_ADDR_X			5
+#define TI_TSC2046_ADDR_Z2			4
+#define TI_TSC2046_ADDR_Z1			3
+#define TI_TSC2046_ADDR_VBAT			2
+#define TI_TSC2046_ADDR_Y			1
+#define TI_TSC2046_ADDR_TEMP0			0
+
+/*
+ * The mode bit sets the resolution of the ADC. With this bit low, the next
+ * conversion has 12-bit resolution, whereas with this bit high, the next
+ * conversion has 8-bit resolution. This driver is optimized for 12-bit mode.
+ * So, for this driver, this bit should stay zero.
+ */
+#define TI_TSC2046_8BIT_MODE			BIT(3)
+
+/*
+ * SER/DFR - The SER/DFR bit controls the reference mode, either single-ended
+ * (high) or differential (low).
+ */
+#define TI_TSC2046_SER				BIT(2)
+
+/*
+ * If VREF_ON and ADC_ON are both zero, then the chip operates in
+ * auto-wake/suspend mode. In most case this bits should stay zero.
+ */
+#define TI_TSC2046_PD1_VREF_ON			BIT(1)
+#define TI_TSC2046_PD0_ADC_ON			BIT(0)
+
+/*
+ * All supported devices can do 8 or 12bit resolution. This driver
+ * supports only 12bit mode, here we have a 16bit data transfer, where
+ * the MSB and the 3 LSB are 0.
+ */
+#define TI_TSC2046_DATA_12BIT			GENMASK(14, 3)
+
+#define TI_TSC2046_MAX_CHAN			8
+#define TI_TSC2046_MIN_POLL_CNT			3
+#define TI_TSC2046_EXT_POLL_CNT			3
+#define TI_TSC2046_POLL_CNT \
+	(TI_TSC2046_MIN_POLL_CNT + TI_TSC2046_EXT_POLL_CNT)
+#define TI_TSC2046_INT_VREF			2500
+
+/* Represents a HW sample */
+struct tsc2046_adc_atom {
+	/*
+	 * Command transmitted to the controller. This field is empty on the RX
+	 * buffer.
+	 */
+	u8 cmd;
+	/*
+	 * Data received from the controller. This field is empty for the TX
+	 * buffer
+	 */
+	__be16 data;
+} __packed;
+
+/* Layout of atomic buffers within big buffer */
+struct tsc2046_adc_group_layout {
+	/* Group offset within the SPI RX buffer */
+	unsigned int offset;
+	/*
+	 * Amount of tsc2046_adc_atom structs within the same command gathered
+	 * within same group.
+	 */
+	unsigned int count;
+	/*
+	 * Settling samples (tsc2046_adc_atom structs) which should be skipped
+	 * before good samples will start.
+	 */
+	unsigned int skip;
+};
+
+struct tsc2046_adc_dcfg {
+	const struct iio_chan_spec *channels;
+	unsigned int num_channels;
+};
+
+struct tsc2046_adc_ch_cfg {
+	unsigned int settling_time_us;
+	unsigned int oversampling_ratio;
+};
+
+enum tsc2046_state {
+	TSC2046_STATE_SHUTDOWN,
+	TSC2046_STATE_STANDBY,
+	TSC2046_STATE_POLL,
+	TSC2046_STATE_POLL_IRQ_DISABLE,
+	TSC2046_STATE_ENABLE_IRQ,
+};
+
+struct tsc2046_adc_priv {
+	struct spi_device *spi;
+	const struct tsc2046_adc_dcfg *dcfg;
+	struct regulator *vref_reg;
+
+	struct iio_trigger *trig;
+	struct hrtimer trig_timer;
+	enum tsc2046_state state;
+	int poll_cnt;
+	spinlock_t state_lock;
+
+	struct spi_transfer xfer;
+	struct spi_message msg;
+
+	struct {
+		/* Scan data for each channel */
+		u16 data[TI_TSC2046_MAX_CHAN];
+		/* Timestamp */
+		s64 ts __aligned(8);
+	} scan_buf;
+
+	/*
+	 * Lock to protect the layout and the SPI transfer buffer.
+	 * tsc2046_adc_group_layout can be changed within update_scan_mode(),
+	 * in this case the l[] and tx/rx buffer will be out of sync to each
+	 * other.
+	 */
+	struct mutex slock;
+	struct tsc2046_adc_group_layout l[TI_TSC2046_MAX_CHAN];
+	struct tsc2046_adc_atom *rx;
+	struct tsc2046_adc_atom *tx;
+
+	unsigned int count;
+	unsigned int groups;
+	u32 effective_speed_hz;
+	u32 scan_interval_us;
+	u32 time_per_scan_us;
+	u32 time_per_bit_ns;
+	unsigned int vref_mv;
+
+	struct tsc2046_adc_ch_cfg ch_cfg[TI_TSC2046_MAX_CHAN];
+};
+
+#define TI_TSC2046_V_CHAN(index, bits, name)			\
+{								\
+	.type = IIO_VOLTAGE,					\
+	.indexed = 1,						\
+	.channel = index,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+	.datasheet_name = "#name",				\
+	.scan_index = index,					\
+	.scan_type = {						\
+		.sign = 'u',					\
+		.realbits = bits,				\
+		.storagebits = 16,				\
+		.endianness = IIO_CPU,				\
+	},							\
+}
+
+#define DECLARE_TI_TSC2046_8_CHANNELS(name, bits) \
+const struct iio_chan_spec name ## _channels[] = { \
+	TI_TSC2046_V_CHAN(0, bits, TEMP0), \
+	TI_TSC2046_V_CHAN(1, bits, Y), \
+	TI_TSC2046_V_CHAN(2, bits, VBAT), \
+	TI_TSC2046_V_CHAN(3, bits, Z1), \
+	TI_TSC2046_V_CHAN(4, bits, Z2), \
+	TI_TSC2046_V_CHAN(5, bits, X), \
+	TI_TSC2046_V_CHAN(6, bits, AUX), \
+	TI_TSC2046_V_CHAN(7, bits, TEMP1), \
+	IIO_CHAN_SOFT_TIMESTAMP(8), \
+}
+
+static DECLARE_TI_TSC2046_8_CHANNELS(tsc2046_adc, 12);
+
+static const struct tsc2046_adc_dcfg tsc2046_adc_dcfg_tsc2046e = {
+	.channels = tsc2046_adc_channels,
+	.num_channels = ARRAY_SIZE(tsc2046_adc_channels),
+};
+
+/*
+ * Convert time to a number of samples which can be transferred within this
+ * time.
+ */
+static unsigned int tsc2046_adc_time_to_count(struct tsc2046_adc_priv *priv,
+					      unsigned long time)
+{
+	unsigned int bit_count, sample_count;
+
+	bit_count = DIV_ROUND_UP(time * NSEC_PER_USEC, priv->time_per_bit_ns);
+	sample_count = DIV_ROUND_UP(bit_count, TI_TSC2046_SAMPLE_BITS);
+
+	dev_dbg(&priv->spi->dev, "Effective speed %u, time per bit: %u, count bits: %u, count samples: %u\n",
+		priv->effective_speed_hz, priv->time_per_bit_ns,
+		bit_count, sample_count);
+
+	return sample_count;
+}
+
+static u8 tsc2046_adc_get_cmd(struct tsc2046_adc_priv *priv, int ch_idx,
+			      bool keep_power)
+{
+	u32 pd;
+
+	/*
+	 * if PD bits are 0, controller will automatically disable ADC, VREF and
+	 * enable IRQ.
+	 */
+	if (keep_power)
+		pd = TI_TSC2046_PD0_ADC_ON;
+	else
+		pd = 0;
+
+	switch (ch_idx) {
+	case TI_TSC2046_ADDR_TEMP1:
+	case TI_TSC2046_ADDR_AUX:
+	case TI_TSC2046_ADDR_VBAT:
+	case TI_TSC2046_ADDR_TEMP0:
+		pd |= TI_TSC2046_SER;
+		if (!priv->vref_reg)
+			pd |= TI_TSC2046_PD1_VREF_ON;
+	}
+
+	return TI_TSC2046_START | FIELD_PREP(TI_TSC2046_ADDR, ch_idx) | pd;
+}
+
+static u16 tsc2046_adc_get_value(struct tsc2046_adc_atom *buf)
+{
+	return FIELD_GET(TI_TSC2046_DATA_12BIT, get_unaligned_be16(&buf->data));
+}
+
+static int tsc2046_adc_read_one(struct tsc2046_adc_priv *priv, int ch_idx,
+				u32 *effective_speed_hz)
+{
+	struct tsc2046_adc_ch_cfg *ch = &priv->ch_cfg[ch_idx];
+	struct tsc2046_adc_atom *rx_buf, *tx_buf;
+	unsigned int val, val_normalized = 0;
+	int ret, i, count_skip = 0, max_count;
+	struct spi_transfer xfer;
+	struct spi_message msg;
+	u8 cmd;
+
+	if (!effective_speed_hz) {
+		count_skip = tsc2046_adc_time_to_count(priv, ch->settling_time_us);
+		max_count = count_skip + ch->oversampling_ratio;
+	} else {
+		max_count = 1;
+	}
+
+	if (sizeof(*tx_buf) * max_count > PAGE_SIZE)
+		return -ENOSPC;
+
+	tx_buf = kcalloc(max_count, sizeof(*tx_buf), GFP_KERNEL);
+	if (!tx_buf)
+		return -ENOMEM;
+
+	rx_buf = kcalloc(max_count, sizeof(*rx_buf), GFP_KERNEL);
+	if (!rx_buf) {
+		ret = -ENOMEM;
+		goto free_tx;
+	}
+
+	/*
+	 * Do not enable automatic power down on working samples. Otherwise the
+	 * plates will never be completely charged.
+	 */
+	cmd = tsc2046_adc_get_cmd(priv, ch_idx, true);
+
+	for (i = 0; i < max_count - 1; i++)
+		tx_buf[i].cmd = cmd;
+
+	/* automatically power down on last sample */
+	tx_buf[i].cmd = tsc2046_adc_get_cmd(priv, ch_idx, false);
+
+	memset(&xfer, 0, sizeof(xfer));
+	xfer.tx_buf = tx_buf;
+	xfer.rx_buf = rx_buf;
+	xfer.len = sizeof(*tx_buf) * max_count;
+	spi_message_init_with_transfers(&msg, &xfer, 1);
+
+	/*
+	 * We aren't using spi_write_then_read() because we need to be able
+	 * to get hold of the effective_speed_hz from the xfer
+	 */
+	ret = spi_sync(priv->spi, &msg);
+	if (ret) {
+		dev_err_ratelimited(&priv->spi->dev, "SPI transfer failed %pe\n",
+				    ERR_PTR(ret));
+		goto free_bufs;
+	}
+
+	if (effective_speed_hz)
+		*effective_speed_hz = xfer.effective_speed_hz;
+
+	for (i = 0; i < max_count - count_skip; i++) {
+		val = tsc2046_adc_get_value(&rx_buf[count_skip + i]);
+		val_normalized += val;
+	}
+
+	ret = DIV_ROUND_UP(val_normalized, max_count - count_skip);
+
+free_bufs:
+	kfree(rx_buf);
+free_tx:
+	kfree(tx_buf);
+
+	return ret;
+}
+
+static size_t tsc2046_adc_group_set_layout(struct tsc2046_adc_priv *priv,
+					   unsigned int group,
+					   unsigned int ch_idx)
+{
+	struct tsc2046_adc_ch_cfg *ch = &priv->ch_cfg[ch_idx];
+	struct tsc2046_adc_group_layout *cur;
+	unsigned int max_count, count_skip;
+	unsigned int offset = 0;
+
+	if (group)
+		offset = priv->l[group - 1].offset + priv->l[group - 1].count;
+
+	count_skip = tsc2046_adc_time_to_count(priv, ch->settling_time_us);
+	max_count = count_skip + ch->oversampling_ratio;
+
+	cur = &priv->l[group];
+	cur->offset = offset;
+	cur->count = max_count;
+	cur->skip = count_skip;
+
+	return sizeof(*priv->tx) * max_count;
+}
+
+static void tsc2046_adc_group_set_cmd(struct tsc2046_adc_priv *priv,
+				      unsigned int group, int ch_idx)
+{
+	struct tsc2046_adc_group_layout *l = &priv->l[group];
+	unsigned int i;
+	u8 cmd;
+
+	/*
+	 * Do not enable automatic power down on working samples. Otherwise the
+	 * plates will never be completely charged.
+	 */
+	cmd = tsc2046_adc_get_cmd(priv, ch_idx, true);
+
+	for (i = 0; i < l->count - 1; i++)
+		priv->tx[l->offset + i].cmd = cmd;
+
+	/* automatically power down on last sample */
+	priv->tx[l->offset + i].cmd = tsc2046_adc_get_cmd(priv, ch_idx, false);
+}
+
+static u16 tsc2046_adc_get_val(struct tsc2046_adc_priv *priv, int group)
+{
+	struct tsc2046_adc_group_layout *l;
+	unsigned int val, val_normalized = 0;
+	int valid_count, i;
+
+	l = &priv->l[group];
+	valid_count = l->count - l->skip;
+
+	for (i = 0; i < valid_count; i++) {
+		val = tsc2046_adc_get_value(&priv->rx[l->offset + l->skip + i]);
+		val_normalized += val;
+	}
+
+	return DIV_ROUND_UP(val_normalized, valid_count);
+}
+
+static int tsc2046_adc_scan(struct iio_dev *indio_dev)
+{
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+	struct device *dev = &priv->spi->dev;
+	int group;
+	int ret;
+
+	ret = spi_sync(priv->spi, &priv->msg);
+	if (ret < 0) {
+		dev_err_ratelimited(dev, "SPI transfer failed: %pe\n", ERR_PTR(ret));
+		return ret;
+	}
+
+	for (group = 0; group < priv->groups; group++)
+		priv->scan_buf.data[group] = tsc2046_adc_get_val(priv, group);
+
+	ret = iio_push_to_buffers_with_timestamp(indio_dev, &priv->scan_buf,
+						 iio_get_time_ns(indio_dev));
+	/* If the consumer is kfifo, we may get a EBUSY here - ignore it. */
+	if (ret < 0 && ret != -EBUSY) {
+		dev_err_ratelimited(dev, "Failed to push scan buffer %pe\n",
+				    ERR_PTR(ret));
+
+		return ret;
+	}
+
+	return 0;
+}
+
+static irqreturn_t tsc2046_adc_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+
+	mutex_lock(&priv->slock);
+	tsc2046_adc_scan(indio_dev);
+	mutex_unlock(&priv->slock);
+
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static int tsc2046_adc_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2, long m)
+{
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+	int ret;
+
+	switch (m) {
+	case IIO_CHAN_INFO_RAW:
+		ret = tsc2046_adc_read_one(priv, chan->channel, NULL);
+		if (ret < 0)
+			return ret;
+
+		*val = ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		/*
+		 * Note: the TSC2046 has internal voltage divider on the VBAT
+		 * line. This divider can be influenced by external divider.
+		 * So, it is better to use external voltage-divider driver
+		 * instead, which is calculating complete chain.
+		 */
+		*val = priv->vref_mv;
+		*val2 = chan->scan_type.realbits;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	}
+
+	return -EINVAL;
+}
+
+static int tsc2046_adc_update_scan_mode(struct iio_dev *indio_dev,
+					const unsigned long *active_scan_mask)
+{
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+	unsigned int ch_idx, group = 0;
+	size_t size;
+
+	mutex_lock(&priv->slock);
+
+	size = 0;
+	for_each_set_bit(ch_idx, active_scan_mask, ARRAY_SIZE(priv->l)) {
+		size += tsc2046_adc_group_set_layout(priv, group, ch_idx);
+		tsc2046_adc_group_set_cmd(priv, group, ch_idx);
+		group++;
+	}
+
+	priv->groups = group;
+	priv->xfer.len = size;
+	priv->time_per_scan_us = size * 8 * priv->time_per_bit_ns / NSEC_PER_USEC;
+
+	if (priv->scan_interval_us < priv->time_per_scan_us)
+		dev_warn(&priv->spi->dev, "The scan interval (%d) is less then calculated scan time (%d)\n",
+			 priv->scan_interval_us, priv->time_per_scan_us);
+
+	mutex_unlock(&priv->slock);
+
+	return 0;
+}
+
+static const struct iio_info tsc2046_adc_info = {
+	.read_raw	  = tsc2046_adc_read_raw,
+	.update_scan_mode = tsc2046_adc_update_scan_mode,
+};
+
+static enum hrtimer_restart tsc2046_adc_timer(struct hrtimer *hrtimer)
+{
+	struct tsc2046_adc_priv *priv = container_of(hrtimer,
+						     struct tsc2046_adc_priv,
+						     trig_timer);
+	unsigned long flags;
+
+	/*
+	 * This state machine should address following challenges :
+	 * - the interrupt source is based on level shifter attached to the X
+	 *   channel of ADC. It will change the state every time we switch
+	 *   between channels. So, we need to disable IRQ if we do
+	 *   iio_trigger_poll().
+	 * - we should do iio_trigger_poll() at some reduced sample rate
+	 * - we should still trigger for some amount of time after last
+	 *   interrupt with enabled IRQ was processed.
+	 */
+
+	spin_lock_irqsave(&priv->state_lock, flags);
+	switch (priv->state) {
+	case TSC2046_STATE_ENABLE_IRQ:
+		if (priv->poll_cnt < TI_TSC2046_POLL_CNT) {
+			priv->poll_cnt++;
+			hrtimer_start(&priv->trig_timer,
+				      ns_to_ktime(priv->scan_interval_us *
+						  NSEC_PER_USEC),
+				      HRTIMER_MODE_REL_SOFT);
+
+			if (priv->poll_cnt >= TI_TSC2046_MIN_POLL_CNT) {
+				priv->state = TSC2046_STATE_POLL_IRQ_DISABLE;
+				enable_irq(priv->spi->irq);
+			} else {
+				priv->state = TSC2046_STATE_POLL;
+			}
+		} else {
+			priv->state = TSC2046_STATE_STANDBY;
+			enable_irq(priv->spi->irq);
+		}
+		break;
+	case TSC2046_STATE_POLL_IRQ_DISABLE:
+		disable_irq_nosync(priv->spi->irq);
+		fallthrough;
+	case TSC2046_STATE_POLL:
+		priv->state = TSC2046_STATE_ENABLE_IRQ;
+		/* iio_trigger_poll() starts hrtimer */
+		iio_trigger_poll(priv->trig);
+		break;
+	case TSC2046_STATE_SHUTDOWN:
+		break;
+	case TSC2046_STATE_STANDBY:
+		fallthrough;
+	default:
+		dev_warn(&priv->spi->dev, "Got unexpected state: %i\n",
+			 priv->state);
+		break;
+	}
+	spin_unlock_irqrestore(&priv->state_lock, flags);
+
+	return HRTIMER_NORESTART;
+}
+
+static irqreturn_t tsc2046_adc_irq(int irq, void *dev_id)
+{
+	struct iio_dev *indio_dev = dev_id;
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+	unsigned long flags;
+
+	hrtimer_try_to_cancel(&priv->trig_timer);
+
+	spin_lock_irqsave(&priv->state_lock, flags);
+	if (priv->state != TSC2046_STATE_SHUTDOWN) {
+		priv->state = TSC2046_STATE_ENABLE_IRQ;
+		priv->poll_cnt = 0;
+
+		/* iio_trigger_poll() starts hrtimer */
+		disable_irq_nosync(priv->spi->irq);
+		iio_trigger_poll(priv->trig);
+	}
+	spin_unlock_irqrestore(&priv->state_lock, flags);
+
+	return IRQ_HANDLED;
+}
+
+static void tsc2046_adc_reenable_trigger(struct iio_trigger *trig)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+	ktime_t tim;
+
+	/*
+	 * We can sample it as fast as we can, but usually we do not need so
+	 * many samples. Reduce the sample rate for default (touchscreen) use
+	 * case.
+	 */
+	tim = ns_to_ktime((priv->scan_interval_us - priv->time_per_scan_us) *
+			  NSEC_PER_USEC);
+	hrtimer_start(&priv->trig_timer, tim, HRTIMER_MODE_REL_SOFT);
+}
+
+static int tsc2046_adc_set_trigger_state(struct iio_trigger *trig, bool enable)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct tsc2046_adc_priv *priv = iio_priv(indio_dev);
+	unsigned long flags;
+
+	if (enable) {
+		spin_lock_irqsave(&priv->state_lock, flags);
+		if (priv->state == TSC2046_STATE_SHUTDOWN) {
+			priv->state = TSC2046_STATE_STANDBY;
+			enable_irq(priv->spi->irq);
+		}
+		spin_unlock_irqrestore(&priv->state_lock, flags);
+	} else {
+		spin_lock_irqsave(&priv->state_lock, flags);
+
+		if (priv->state == TSC2046_STATE_STANDBY ||
+		    priv->state == TSC2046_STATE_POLL_IRQ_DISABLE)
+			disable_irq_nosync(priv->spi->irq);
+
+		priv->state = TSC2046_STATE_SHUTDOWN;
+		spin_unlock_irqrestore(&priv->state_lock, flags);
+
+		hrtimer_cancel(&priv->trig_timer);
+	}
+
+	return 0;
+}
+
+static const struct iio_trigger_ops tsc2046_adc_trigger_ops = {
+	.set_trigger_state = tsc2046_adc_set_trigger_state,
+	.reenable = tsc2046_adc_reenable_trigger,
+};
+
+static int tsc2046_adc_setup_spi_msg(struct tsc2046_adc_priv *priv)
+{
+	unsigned int ch_idx;
+	size_t size;
+	int ret;
+
+	/*
+	 * Make dummy read to set initial power state and get real SPI clock
+	 * freq. It seems to be not important which channel is used for this
+	 * case.
+	 */
+	ret = tsc2046_adc_read_one(priv, TI_TSC2046_ADDR_TEMP0,
+				   &priv->effective_speed_hz);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * In case SPI controller do not report effective_speed_hz, use
+	 * configure value and hope it will match.
+	 */
+	if (!priv->effective_speed_hz)
+		priv->effective_speed_hz = priv->spi->max_speed_hz;
+
+
+	priv->scan_interval_us = TI_TSC2046_SAMPLE_INTERVAL_US;
+	priv->time_per_bit_ns = DIV_ROUND_UP(NSEC_PER_SEC,
+					     priv->effective_speed_hz);
+
+	/*
+	 * Calculate and allocate maximal size buffer if all channels are
+	 * enabled.
+	 */
+	size = 0;
+	for (ch_idx = 0; ch_idx < ARRAY_SIZE(priv->l); ch_idx++)
+		size += tsc2046_adc_group_set_layout(priv, ch_idx, ch_idx);
+
+	if (size > PAGE_SIZE) {
+		dev_err(&priv->spi->dev,
+			"Calculated scan buffer is too big. Try to reduce spi-max-frequency, settling-time-us or oversampling-ratio\n");
+		return -ENOSPC;
+	}
+
+	priv->tx = devm_kzalloc(&priv->spi->dev, size, GFP_KERNEL);
+	if (!priv->tx)
+		return -ENOMEM;
+
+	priv->rx = devm_kzalloc(&priv->spi->dev, size, GFP_KERNEL);
+	if (!priv->rx)
+		return -ENOMEM;
+
+	priv->xfer.tx_buf = priv->tx;
+	priv->xfer.rx_buf = priv->rx;
+	priv->xfer.len = size;
+	spi_message_init_with_transfers(&priv->msg, &priv->xfer, 1);
+
+	return 0;
+}
+
+static void tsc2046_adc_parse_fwnode(struct tsc2046_adc_priv *priv)
+{
+	struct fwnode_handle *child;
+	struct device *dev = &priv->spi->dev;
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(priv->ch_cfg); i++) {
+		priv->ch_cfg[i].settling_time_us = 1;
+		priv->ch_cfg[i].oversampling_ratio = 1;
+	}
+
+	device_for_each_child_node(dev, child) {
+		u32 stl, overs, reg;
+		int ret;
+
+		ret = fwnode_property_read_u32(child, "reg", &reg);
+		if (ret) {
+			dev_err(dev, "invalid reg on %pfw, err: %pe\n", child,
+				ERR_PTR(ret));
+			continue;
+		}
+
+		if (reg >= ARRAY_SIZE(priv->ch_cfg)) {
+			dev_err(dev, "%pfw: Unsupported reg value: %i, max supported is: %zu.\n",
+				child, reg, ARRAY_SIZE(priv->ch_cfg));
+			continue;
+		}
+
+		ret = fwnode_property_read_u32(child, "settling-time-us", &stl);
+		if (!ret)
+			priv->ch_cfg[reg].settling_time_us = stl;
+
+		ret = fwnode_property_read_u32(child, "oversampling-ratio",
+					       &overs);
+		if (!ret)
+			priv->ch_cfg[reg].oversampling_ratio = overs;
+	}
+}
+
+static void tsc2046_adc_regulator_disable(void *data)
+{
+	struct tsc2046_adc_priv *priv = data;
+
+	regulator_disable(priv->vref_reg);
+}
+
+static int tsc2046_adc_configure_regulator(struct tsc2046_adc_priv *priv)
+{
+	struct device *dev = &priv->spi->dev;
+	int ret;
+
+	priv->vref_reg = devm_regulator_get_optional(dev, "vref");
+	if (IS_ERR(priv->vref_reg)) {
+		/* If regulator exists but can't be get, return an error */
+		if (PTR_ERR(priv->vref_reg) != -ENODEV)
+			return PTR_ERR(priv->vref_reg);
+		priv->vref_reg = NULL;
+	}
+	if (!priv->vref_reg) {
+		/* Use internal reference */
+		priv->vref_mv = TI_TSC2046_INT_VREF;
+		return 0;
+	}
+
+	ret = regulator_enable(priv->vref_reg);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, tsc2046_adc_regulator_disable,
+				       priv);
+	if (ret)
+		return ret;
+
+	ret = regulator_get_voltage(priv->vref_reg);
+	if (ret < 0)
+		return ret;
+
+	priv->vref_mv = ret / MILLI;
+
+	return 0;
+}
+
+static int tsc2046_adc_probe(struct spi_device *spi)
+{
+	const struct tsc2046_adc_dcfg *dcfg;
+	struct device *dev = &spi->dev;
+	struct tsc2046_adc_priv *priv;
+	struct iio_dev *indio_dev;
+	struct iio_trigger *trig;
+	int ret;
+
+	if (spi->max_speed_hz > TI_TSC2046_MAX_CLK_FREQ) {
+		dev_err(dev, "SPI max_speed_hz is too high: %d Hz. Max supported freq is %zu Hz\n",
+			spi->max_speed_hz, TI_TSC2046_MAX_CLK_FREQ);
+		return -EINVAL;
+	}
+
+	dcfg = device_get_match_data(dev);
+	if (!dcfg) {
+		const struct spi_device_id *id = spi_get_device_id(spi);
+
+		dcfg = (const struct tsc2046_adc_dcfg *)id->driver_data;
+	}
+	if (!dcfg)
+		return -EINVAL;
+
+	spi->bits_per_word = 8;
+	spi->mode &= ~SPI_MODE_X_MASK;
+	spi->mode |= SPI_MODE_0;
+	ret = spi_setup(spi);
+	if (ret < 0)
+		return dev_err_probe(dev, ret, "Error in SPI setup\n");
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	priv = iio_priv(indio_dev);
+	priv->dcfg = dcfg;
+
+	priv->spi = spi;
+
+	indio_dev->name = TI_TSC2046_NAME;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = dcfg->channels;
+	indio_dev->num_channels = dcfg->num_channels;
+	indio_dev->info = &tsc2046_adc_info;
+
+	ret = tsc2046_adc_configure_regulator(priv);
+	if (ret)
+		return ret;
+
+	tsc2046_adc_parse_fwnode(priv);
+
+	ret = tsc2046_adc_setup_spi_msg(priv);
+	if (ret)
+		return ret;
+
+	mutex_init(&priv->slock);
+
+	ret = devm_request_irq(dev, spi->irq, &tsc2046_adc_irq,
+			       IRQF_NO_AUTOEN, indio_dev->name, indio_dev);
+	if (ret)
+		return ret;
+
+	trig = devm_iio_trigger_alloc(dev, "touchscreen-%s", indio_dev->name);
+	if (!trig)
+		return -ENOMEM;
+
+	priv->trig = trig;
+	iio_trigger_set_drvdata(trig, indio_dev);
+	trig->ops = &tsc2046_adc_trigger_ops;
+
+	spin_lock_init(&priv->state_lock);
+	priv->state = TSC2046_STATE_SHUTDOWN;
+	hrtimer_init(&priv->trig_timer, CLOCK_MONOTONIC,
+		     HRTIMER_MODE_REL_SOFT);
+	priv->trig_timer.function = tsc2046_adc_timer;
+
+	ret = devm_iio_trigger_register(dev, trig);
+	if (ret) {
+		dev_err(dev, "failed to register trigger\n");
+		return ret;
+	}
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
+					      &tsc2046_adc_trigger_handler, NULL);
+	if (ret) {
+		dev_err(dev, "Failed to setup triggered buffer\n");
+		return ret;
+	}
+
+	/* set default trigger */
+	indio_dev->trig = iio_trigger_get(priv->trig);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id ads7950_of_table[] = {
+	{ .compatible = "ti,tsc2046e-adc", .data = &tsc2046_adc_dcfg_tsc2046e },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ads7950_of_table);
+
+static const struct spi_device_id tsc2046_adc_spi_ids[] = {
+	{ "tsc2046e-adc", (unsigned long)&tsc2046_adc_dcfg_tsc2046e },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, tsc2046_adc_spi_ids);
+
+static struct spi_driver tsc2046_adc_driver = {
+	.driver = {
+		.name = "tsc2046",
+		.of_match_table = ads7950_of_table,
+	},
+	.id_table = tsc2046_adc_spi_ids,
+	.probe = tsc2046_adc_probe,
+};
+module_spi_driver(tsc2046_adc_driver);
+
+MODULE_AUTHOR("Oleksij Rempel <kernel@pengutronix.de>");
+MODULE_DESCRIPTION("TI TSC2046 ADC");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/ti_am335x_adc.c b/drivers/iio/adc/ti_am335x_adc.c
index 9d984f2a8ba7..642c5c4895e3 100644
--- a/drivers/iio/adc/ti_am335x_adc.c
+++ b/drivers/iio/adc/ti_am335x_adc.c
@@ -1,16 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * TI ADC MFD driver
  *
- * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License as
- * published by the Free Software Foundation version 2.
- *
- * This program is distributed "as is" WITHOUT ANY WARRANTY of any
- * kind, whether express or implied; without even the implied warranty
- * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
+ * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
  */
 
 #include <linux/kernel.h>
@@ -25,6 +17,7 @@
 #include <linux/of_device.h>
 #include <linux/iio/machine.h>
 #include <linux/iio/driver.h>
+#include <linux/iopoll.h>
 
 #include <linux/mfd/ti_am335x_tscadc.h>
 #include <linux/iio/buffer.h>
@@ -65,7 +58,7 @@ static unsigned int tiadc_readl(struct tiadc_device *adc, unsigned int reg)
 }
 
 static void tiadc_writel(struct tiadc_device *adc, unsigned int reg,
-					unsigned int val)
+			 unsigned int val)
 {
 	writel(val, adc->mfd_tscadc->tscadc_base + reg);
 }
@@ -80,7 +73,7 @@ static u32 get_adc_step_mask(struct tiadc_device *adc_dev)
 }
 
 static u32 get_adc_chan_step_mask(struct tiadc_device *adc_dev,
-		struct iio_chan_spec const *chan)
+				  struct iio_chan_spec const *chan)
 {
 	int i;
 
@@ -102,10 +95,18 @@ static u32 get_adc_step_bit(struct tiadc_device *adc_dev, int chan)
 	return 1 << adc_dev->channel_step[chan];
 }
 
+static int tiadc_wait_idle(struct tiadc_device *adc_dev)
+{
+	u32 val;
+
+	return readl_poll_timeout(adc_dev->mfd_tscadc->tscadc_base + REG_ADCFSM,
+				  val, !(val & SEQ_STATUS), 10,
+				  IDLE_TIMEOUT_MS * 1000 * adc_dev->channels);
+}
+
 static void tiadc_step_config(struct iio_dev *indio_dev)
 {
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
-	struct device *dev = adc_dev->mfd_tscadc->dev;
 	unsigned int stepconfig;
 	int i, steps = 0;
 
@@ -118,23 +119,14 @@ static void tiadc_step_config(struct iio_dev *indio_dev)
 	 * Channel would represent which analog input
 	 * needs to be given to ADC to digitalize data.
 	 */
-
-
 	for (i = 0; i < adc_dev->channels; i++) {
 		int chan;
 
 		chan = adc_dev->channel_line[i];
 
-		if (adc_dev->step_avg[i] > STEPCONFIG_AVG_16) {
-			dev_warn(dev, "chan %d step_avg truncating to %d\n",
-				 chan, STEPCONFIG_AVG_16);
-			adc_dev->step_avg[i] = STEPCONFIG_AVG_16;
-		}
-
 		if (adc_dev->step_avg[i])
-			stepconfig =
-			STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1) |
-			STEPCONFIG_FIFO1;
+			stepconfig = STEPCONFIG_AVG(ffs(adc_dev->step_avg[i]) - 1) |
+				     STEPCONFIG_FIFO1;
 		else
 			stepconfig = STEPCONFIG_FIFO1;
 
@@ -142,26 +134,13 @@ static void tiadc_step_config(struct iio_dev *indio_dev)
 			stepconfig |= STEPCONFIG_MODE_SWCNT;
 
 		tiadc_writel(adc_dev, REG_STEPCONFIG(steps),
-				stepconfig | STEPCONFIG_INP(chan) |
-				STEPCONFIG_INM_ADCREFM |
-				STEPCONFIG_RFP_VREFP |
-				STEPCONFIG_RFM_VREFN);
-
-		if (adc_dev->open_delay[i] > STEPDELAY_OPEN_MASK) {
-			dev_warn(dev, "chan %d open delay truncating to 0x3FFFF\n",
-				 chan);
-			adc_dev->open_delay[i] = STEPDELAY_OPEN_MASK;
-		}
-
-		if (adc_dev->sample_delay[i] > 0xFF) {
-			dev_warn(dev, "chan %d sample delay truncating to 0xFF\n",
-				 chan);
-			adc_dev->sample_delay[i] = 0xFF;
-		}
+			     stepconfig | STEPCONFIG_INP(chan) |
+			     STEPCONFIG_INM_ADCREFM | STEPCONFIG_RFP_VREFP |
+			     STEPCONFIG_RFM_VREFN);
 
 		tiadc_writel(adc_dev, REG_STEPDELAY(steps),
-				STEPDELAY_OPEN(adc_dev->open_delay[i]) |
-				STEPDELAY_SAMPLE(adc_dev->sample_delay[i]));
+			     STEPDELAY_OPEN(adc_dev->open_delay[i]) |
+			     STEPDELAY_SAMPLE(adc_dev->sample_delay[i]));
 
 		adc_dev->channel_step[i] = steps;
 		steps++;
@@ -184,12 +163,14 @@ static irqreturn_t tiadc_irq_h(int irq, void *private)
 	if (status & IRQENB_FIFO1OVRRUN) {
 		/* FIFO Overrun. Clear flag. Disable/Enable ADC to recover */
 		config = tiadc_readl(adc_dev, REG_CTRL);
-		config &= ~(CNTRLREG_TSCSSENB);
+		config &= ~(CNTRLREG_SSENB);
 		tiadc_writel(adc_dev, REG_CTRL, config);
-		tiadc_writel(adc_dev, REG_IRQSTATUS, IRQENB_FIFO1OVRRUN
-				| IRQENB_FIFO1UNDRFLW | IRQENB_FIFO1THRES);
+		tiadc_writel(adc_dev, REG_IRQSTATUS,
+			     IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW |
+			     IRQENB_FIFO1THRES);
 
-		/* wait for idle state.
+		/*
+		 * Wait for the idle state.
 		 * ADC needs to finish the current conversion
 		 * before disabling the module
 		 */
@@ -197,7 +178,7 @@ static irqreturn_t tiadc_irq_h(int irq, void *private)
 			adc_fsm = tiadc_readl(adc_dev, REG_ADCFSM);
 		} while (adc_fsm != 0x10 && count++ < 100);
 
-		tiadc_writel(adc_dev, REG_CTRL, (config | CNTRLREG_TSCSSENB));
+		tiadc_writel(adc_dev, REG_CTRL, (config | CNTRLREG_SSENB));
 		return IRQ_HANDLED;
 	} else if (status & IRQENB_FIFO1THRES) {
 		/* Disable irq and wake worker thread */
@@ -217,11 +198,11 @@ static irqreturn_t tiadc_worker_h(int irq, void *private)
 
 	fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
 	for (k = 0; k < fifo1count; k = k + i) {
-		for (i = 0; i < (indio_dev->scan_bytes)/2; i++) {
+		for (i = 0; i < indio_dev->scan_bytes / 2; i++) {
 			read = tiadc_readl(adc_dev, REG_FIFO1);
 			data[i] = read & FIFOREAD_DATA_MASK;
 		}
-		iio_push_to_buffers(indio_dev, (u8 *) data);
+		iio_push_to_buffers(indio_dev, (u8 *)data);
 	}
 
 	tiadc_writel(adc_dev, REG_IRQSTATUS, IRQENB_FIFO1THRES);
@@ -254,6 +235,7 @@ static int tiadc_start_dma(struct iio_dev *indio_dev)
 	struct dma_async_tx_descriptor *desc;
 
 	dma->current_period = 0; /* We start to fill period 0 */
+
 	/*
 	 * Make the fifo thresh as the multiple of total number of
 	 * channels enabled, so make sure that cyclic DMA period
@@ -263,9 +245,10 @@ static int tiadc_start_dma(struct iio_dev *indio_dev)
 	 */
 	dma->fifo_thresh = rounddown(FIFO1_THRESHOLD + 1,
 				     adc_dev->total_ch_enabled) - 1;
+
 	/* Make sure that period length is multiple of fifo thresh level */
 	dma->period_size = rounddown(DMA_BUFFER_SIZE / 2,
-				    (dma->fifo_thresh + 1) * sizeof(u16));
+				     (dma->fifo_thresh + 1) * sizeof(u16));
 
 	dma->conf.src_maxburst = dma->fifo_thresh + 1;
 	dmaengine_slave_config(dma->chan, &dma->conf);
@@ -294,16 +277,21 @@ static int tiadc_start_dma(struct iio_dev *indio_dev)
 static int tiadc_buffer_preenable(struct iio_dev *indio_dev)
 {
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
-	int i, fifo1count, read;
+	int i, fifo1count;
+	int ret;
 
-	tiadc_writel(adc_dev, REG_IRQCLR, (IRQENB_FIFO1THRES |
-				IRQENB_FIFO1OVRRUN |
-				IRQENB_FIFO1UNDRFLW));
+	ret = tiadc_wait_idle(adc_dev);
+	if (ret)
+		return ret;
+
+	tiadc_writel(adc_dev, REG_IRQCLR,
+		     IRQENB_FIFO1THRES | IRQENB_FIFO1OVRRUN |
+		     IRQENB_FIFO1UNDRFLW);
 
 	/* Flush FIFO. Needed in corner cases in simultaneous tsc/adc use */
 	fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
 	for (i = 0; i < fifo1count; i++)
-		read = tiadc_readl(adc_dev, REG_FIFO1);
+		tiadc_readl(adc_dev, REG_FIFO1);
 
 	return 0;
 }
@@ -328,8 +316,9 @@ static int tiadc_buffer_postenable(struct iio_dev *indio_dev)
 
 	am335x_tsc_se_set_cache(adc_dev->mfd_tscadc, enb);
 
-	tiadc_writel(adc_dev,  REG_IRQSTATUS, IRQENB_FIFO1THRES
-				| IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW);
+	tiadc_writel(adc_dev, REG_IRQSTATUS,
+		     IRQENB_FIFO1THRES | IRQENB_FIFO1OVRRUN |
+		     IRQENB_FIFO1UNDRFLW);
 
 	irq_enable = IRQENB_FIFO1OVRRUN;
 	if (!dma->chan)
@@ -343,10 +332,11 @@ static int tiadc_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
 	struct tiadc_dma *dma = &adc_dev->dma;
-	int fifo1count, i, read;
+	int fifo1count, i;
 
-	tiadc_writel(adc_dev, REG_IRQCLR, (IRQENB_FIFO1THRES |
-				IRQENB_FIFO1OVRRUN | IRQENB_FIFO1UNDRFLW));
+	tiadc_writel(adc_dev, REG_IRQCLR,
+		     IRQENB_FIFO1THRES | IRQENB_FIFO1OVRRUN |
+		     IRQENB_FIFO1UNDRFLW);
 	am335x_tsc_se_clr(adc_dev->mfd_tscadc, adc_dev->buffer_en_ch_steps);
 	adc_dev->buffer_en_ch_steps = 0;
 	adc_dev->total_ch_enabled = 0;
@@ -358,7 +348,7 @@ static int tiadc_buffer_predisable(struct iio_dev *indio_dev)
 	/* Flush FIFO of leftover data in the time it takes to disable adc */
 	fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
 	for (i = 0; i < fifo1count; i++)
-		read = tiadc_readl(adc_dev, REG_FIFO1);
+		tiadc_readl(adc_dev, REG_FIFO1);
 
 	return 0;
 }
@@ -377,46 +367,23 @@ static const struct iio_buffer_setup_ops tiadc_buffer_setup_ops = {
 	.postdisable = &tiadc_buffer_postdisable,
 };
 
-static int tiadc_iio_buffered_hardware_setup(struct iio_dev *indio_dev,
-	irqreturn_t (*pollfunc_bh)(int irq, void *p),
-	irqreturn_t (*pollfunc_th)(int irq, void *p),
-	int irq,
-	unsigned long flags,
-	const struct iio_buffer_setup_ops *setup_ops)
+static int tiadc_iio_buffered_hardware_setup(struct device *dev,
+					     struct iio_dev *indio_dev,
+					     irqreturn_t (*pollfunc_bh)(int irq, void *p),
+					     irqreturn_t (*pollfunc_th)(int irq, void *p),
+					     int irq, unsigned long flags,
+					     const struct iio_buffer_setup_ops *setup_ops)
 {
-	struct iio_buffer *buffer;
 	int ret;
 
-	buffer = iio_kfifo_allocate();
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
-	ret = request_threaded_irq(irq,	pollfunc_th, pollfunc_bh,
-				flags, indio_dev->name, indio_dev);
+	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev, setup_ops);
 	if (ret)
-		goto error_kfifo_free;
-
-	indio_dev->setup_ops = setup_ops;
-	indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
-
-	return 0;
-
-error_kfifo_free:
-	iio_kfifo_free(indio_dev->buffer);
-	return ret;
-}
-
-static void tiadc_iio_buffered_hardware_remove(struct iio_dev *indio_dev)
-{
-	struct tiadc_device *adc_dev = iio_priv(indio_dev);
+		return ret;
 
-	free_irq(adc_dev->mfd_tscadc->irq, indio_dev);
-	iio_kfifo_free(indio_dev->buffer);
+	return devm_request_threaded_irq(dev, irq, pollfunc_th, pollfunc_bh,
+					 flags, indio_dev->name, indio_dev);
 }
 
-
 static const char * const chan_name_ain[] = {
 	"AIN0",
 	"AIN1",
@@ -428,7 +395,8 @@ static const char * const chan_name_ain[] = {
 	"AIN7",
 };
 
-static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
+static int tiadc_channel_init(struct device *dev, struct iio_dev *indio_dev,
+			      int channels)
 {
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
 	struct iio_chan_spec *chan_array;
@@ -436,17 +404,18 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
 	int i;
 
 	indio_dev->num_channels = channels;
-	chan_array = kcalloc(channels, sizeof(*chan_array), GFP_KERNEL);
-	if (chan_array == NULL)
+	chan_array = devm_kcalloc(dev, channels, sizeof(*chan_array),
+				  GFP_KERNEL);
+	if (!chan_array)
 		return -ENOMEM;
 
 	chan = chan_array;
 	for (i = 0; i < channels; i++, chan++) {
-
 		chan->type = IIO_VOLTAGE;
 		chan->indexed = 1;
 		chan->channel = adc_dev->channel_line[i];
 		chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
+		chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE);
 		chan->datasheet_name = chan_name_ain[chan->channel];
 		chan->scan_index = i;
 		chan->scan_type.sign = 'u';
@@ -459,22 +428,34 @@ static int tiadc_channel_init(struct iio_dev *indio_dev, int channels)
 	return 0;
 }
 
-static void tiadc_channels_remove(struct iio_dev *indio_dev)
-{
-	kfree(indio_dev->channels);
-}
-
 static int tiadc_read_raw(struct iio_dev *indio_dev,
-		struct iio_chan_spec const *chan,
-		int *val, int *val2, long mask)
+			  struct iio_chan_spec const *chan, int *val, int *val2,
+			  long mask)
 {
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
-	int ret = IIO_VAL_INT;
 	int i, map_val;
 	unsigned int fifo1count, read, stepid;
 	bool found = false;
 	u32 step_en;
 	unsigned long timeout;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		break;
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			*val = 1800;
+			*val2 = chan->scan_type.realbits;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		default:
+			return -EINVAL;
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
 
 	if (iio_buffer_enabled(indio_dev))
 		return -EBUSY;
@@ -484,15 +465,19 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
 		return -EINVAL;
 
 	mutex_lock(&adc_dev->fifo1_lock);
+
+	ret = tiadc_wait_idle(adc_dev);
+	if (ret)
+		goto err_unlock;
+
 	fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
 	while (fifo1count--)
 		tiadc_readl(adc_dev, REG_FIFO1);
 
 	am335x_tsc_se_set_once(adc_dev->mfd_tscadc, step_en);
 
-	timeout = jiffies + msecs_to_jiffies
-				(IDLE_TIMEOUT * adc_dev->channels);
 	/* Wait for Fifo threshold interrupt */
+	timeout = jiffies + msecs_to_jiffies(IDLE_TIMEOUT_MS * adc_dev->channels);
 	while (1) {
 		fifo1count = tiadc_readl(adc_dev, REG_FIFO1CNT);
 		if (fifo1count)
@@ -504,6 +489,7 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
 			goto err_unlock;
 		}
 	}
+
 	map_val = adc_dev->channel_step[chan->scan_index];
 
 	/*
@@ -521,17 +507,18 @@ static int tiadc_read_raw(struct iio_dev *indio_dev,
 		if (stepid == map_val) {
 			read = read & FIFOREAD_DATA_MASK;
 			found = true;
-			*val = (u16) read;
+			*val = (u16)read;
 		}
 	}
+
 	am335x_tsc_se_adc_done(adc_dev->mfd_tscadc);
 
 	if (!found)
-		ret =  -EBUSY;
+		ret = -EBUSY;
 
 err_unlock:
 	mutex_unlock(&adc_dev->fifo1_lock);
-	return ret;
+	return ret ? ret : IIO_VAL_INT;
 }
 
 static const struct iio_info tiadc_info = {
@@ -568,6 +555,7 @@ static int tiadc_request_dma(struct platform_device *pdev,
 		goto err;
 
 	return 0;
+
 err:
 	dma_release_channel(dma->chan);
 	return -ENOMEM;
@@ -581,6 +569,7 @@ static int tiadc_parse_dt(struct platform_device *pdev,
 	const __be32 *cur;
 	int channels = 0;
 	u32 val;
+	int i;
 
 	of_property_for_each_u32(node, "ti,adc-channels", prop, cur, val) {
 		adc_dev->channel_line[channels] = val;
@@ -593,6 +582,8 @@ static int tiadc_parse_dt(struct platform_device *pdev,
 		channels++;
 	}
 
+	adc_dev->channels = channels;
+
 	of_property_read_u32_array(node, "ti,chan-step-avg",
 				   adc_dev->step_avg, channels);
 	of_property_read_u32_array(node, "ti,chan-step-opendelay",
@@ -600,7 +591,33 @@ static int tiadc_parse_dt(struct platform_device *pdev,
 	of_property_read_u32_array(node, "ti,chan-step-sampledelay",
 				   adc_dev->sample_delay, channels);
 
-	adc_dev->channels = channels;
+	for (i = 0; i < adc_dev->channels; i++) {
+		int chan;
+
+		chan = adc_dev->channel_line[i];
+
+		if (adc_dev->step_avg[i] > STEPCONFIG_AVG_16) {
+			dev_warn(&pdev->dev,
+				 "chan %d: wrong step avg, truncated to %ld\n",
+				 chan, STEPCONFIG_AVG_16);
+			adc_dev->step_avg[i] = STEPCONFIG_AVG_16;
+		}
+
+		if (adc_dev->open_delay[i] > STEPCONFIG_MAX_OPENDLY) {
+			dev_warn(&pdev->dev,
+				 "chan %d: wrong open delay, truncated to 0x%lX\n",
+				 chan, STEPCONFIG_MAX_OPENDLY);
+			adc_dev->open_delay[i] = STEPCONFIG_MAX_OPENDLY;
+		}
+
+		if (adc_dev->sample_delay[i] > STEPCONFIG_MAX_SAMPLE) {
+			dev_warn(&pdev->dev,
+				 "chan %d: wrong sample delay, truncated to 0x%lX\n",
+				 chan, STEPCONFIG_MAX_SAMPLE);
+			adc_dev->sample_delay[i] = STEPCONFIG_MAX_SAMPLE;
+		}
+	}
+
 	return 0;
 }
 
@@ -617,7 +634,7 @@ static int tiadc_probe(struct platform_device *pdev)
 	}
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*adc_dev));
-	if (indio_dev == NULL) {
+	if (!indio_dev) {
 		dev_err(&pdev->dev, "failed to allocate iio device\n");
 		return -ENOMEM;
 	}
@@ -626,7 +643,6 @@ static int tiadc_probe(struct platform_device *pdev)
 	adc_dev->mfd_tscadc = ti_tscadc_dev_get(pdev);
 	tiadc_parse_dt(pdev, adc_dev);
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = dev_name(&pdev->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &tiadc_info;
@@ -635,23 +651,22 @@ static int tiadc_probe(struct platform_device *pdev)
 	tiadc_writel(adc_dev, REG_FIFO1THR, FIFO1_THRESHOLD);
 	mutex_init(&adc_dev->fifo1_lock);
 
-	err = tiadc_channel_init(indio_dev, adc_dev->channels);
+	err = tiadc_channel_init(&pdev->dev, indio_dev, adc_dev->channels);
 	if (err < 0)
 		return err;
 
-	err = tiadc_iio_buffered_hardware_setup(indio_dev,
-		&tiadc_worker_h,
-		&tiadc_irq_h,
-		adc_dev->mfd_tscadc->irq,
-		IRQF_SHARED,
-		&tiadc_buffer_setup_ops);
-
+	err = tiadc_iio_buffered_hardware_setup(&pdev->dev, indio_dev,
+						&tiadc_worker_h,
+						&tiadc_irq_h,
+						adc_dev->mfd_tscadc->irq,
+						IRQF_SHARED,
+						&tiadc_buffer_setup_ops);
 	if (err)
-		goto err_free_channels;
+		return err;
 
 	err = iio_device_register(indio_dev);
 	if (err)
-		goto err_buffer_unregister;
+		return err;
 
 	platform_set_drvdata(pdev, indio_dev);
 
@@ -663,10 +678,7 @@ static int tiadc_probe(struct platform_device *pdev)
 
 err_dma:
 	iio_device_unregister(indio_dev);
-err_buffer_unregister:
-	tiadc_iio_buffered_hardware_remove(indio_dev);
-err_free_channels:
-	tiadc_channels_remove(indio_dev);
+
 	return err;
 }
 
@@ -683,8 +695,6 @@ static int tiadc_remove(struct platform_device *pdev)
 		dma_release_channel(dma->chan);
 	}
 	iio_device_unregister(indio_dev);
-	tiadc_iio_buffered_hardware_remove(indio_dev);
-	tiadc_channels_remove(indio_dev);
 
 	step_en = get_adc_step_mask(adc_dev);
 	am335x_tsc_se_clr(adc_dev->mfd_tscadc, step_en);
@@ -692,21 +702,20 @@ static int tiadc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused tiadc_suspend(struct device *dev)
+static int tiadc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
 	unsigned int idle;
 
 	idle = tiadc_readl(adc_dev, REG_CTRL);
-	idle &= ~(CNTRLREG_TSCSSENB);
-	tiadc_writel(adc_dev, REG_CTRL, (idle |
-			CNTRLREG_POWERDOWN));
+	idle &= ~(CNTRLREG_SSENB);
+	tiadc_writel(adc_dev, REG_CTRL, idle | CNTRLREG_POWERDOWN);
 
 	return 0;
 }
 
-static int __maybe_unused tiadc_resume(struct device *dev)
+static int tiadc_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct tiadc_device *adc_dev = iio_priv(indio_dev);
@@ -714,19 +723,20 @@ static int __maybe_unused tiadc_resume(struct device *dev)
 
 	/* Make sure ADC is powered up */
 	restore = tiadc_readl(adc_dev, REG_CTRL);
-	restore &= ~(CNTRLREG_POWERDOWN);
+	restore &= ~CNTRLREG_POWERDOWN;
 	tiadc_writel(adc_dev, REG_CTRL, restore);
 
 	tiadc_step_config(indio_dev);
 	am335x_tsc_se_set_cache(adc_dev->mfd_tscadc,
-			adc_dev->buffer_en_ch_steps);
+				adc_dev->buffer_en_ch_steps);
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(tiadc_pm_ops, tiadc_suspend, tiadc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(tiadc_pm_ops, tiadc_suspend, tiadc_resume);
 
 static const struct of_device_id ti_adc_dt_ids[] = {
 	{ .compatible = "ti,am3359-adc", },
+	{ .compatible = "ti,am4372-adc", },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ti_adc_dt_ids);
@@ -734,7 +744,7 @@ MODULE_DEVICE_TABLE(of, ti_adc_dt_ids);
 static struct platform_driver tiadc_driver = {
 	.driver = {
 		.name   = "TI-am335x-adc",
-		.pm	= &tiadc_pm_ops,
+		.pm	= pm_sleep_ptr(&tiadc_pm_ops),
 		.of_match_table = ti_adc_dt_ids,
 	},
 	.probe	= tiadc_probe,
diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index 472b08f37fea..f8f8aea15612 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -5,7 +5,7 @@
  * conversion of analog signals like battery temperature,
  * battery type, battery level etc.
  *
- * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
  * J Keerthy <j-keerthy@ti.com>
  *
  * Based on twl4030-madc.c
@@ -153,7 +153,7 @@ enum sample_type {
  * struct twl4030_madc_data - a container for madc info
  * @dev:		Pointer to device structure for madc
  * @lock:		Mutex protecting this data structure
- * @regulator:		Pointer to bias regulator for madc
+ * @usb3v1:		Pointer to bias regulator for madc
  * @requests:		Array of request struct corresponding to SW1, SW2 and RT
  * @use_second_irq:	IRQ selection (main or co-processor)
  * @imr:		Interrupt mask register of MADC
@@ -161,7 +161,7 @@ enum sample_type {
  */
 struct twl4030_madc_data {
 	struct device *dev;
-	struct mutex lock;	/* mutex protecting this data structure */
+	struct mutex lock;
 	struct regulator *usb3v1;
 	struct twl4030_madc_request requests[TWL4030_MADC_NUM_METHODS];
 	bool use_second_irq;
@@ -231,13 +231,7 @@ static const struct iio_chan_spec twl4030_madc_iio_channels[] = {
 
 static struct twl4030_madc_data *twl4030_madc;
 
-struct twl4030_prescale_divider_ratios {
-	s16 numerator;
-	s16 denominator;
-};
-
-static const struct twl4030_prescale_divider_ratios
-twl4030_divider_ratios[16] = {
+static const struct s16_fract twl4030_divider_ratios[16] = {
 	{1, 1},		/* CHANNEL 0 No Prescaler */
 	{1, 1},		/* CHANNEL 1 No Prescaler */
 	{6, 10},	/* CHANNEL 2 */
@@ -256,7 +250,6 @@ twl4030_divider_ratios[16] = {
 	{5, 11},	/* CHANNEL 15 */
 };
 
-
 /* Conversion table from -3 to 55 degrees Celcius */
 static int twl4030_therm_tbl[] = {
 	30800,	29500,	28300,	27100,
@@ -472,7 +465,7 @@ static irqreturn_t twl4030_madc_threaded_irq_handler(int irq, void *_madc)
 	struct twl4030_madc_data *madc = _madc;
 	const struct twl4030_madc_conversion_method *method;
 	u8 isr_val, imr_val;
-	int i, len, ret;
+	int i, ret;
 	struct twl4030_madc_request *r;
 
 	mutex_lock(&madc->lock);
@@ -504,8 +497,8 @@ static irqreturn_t twl4030_madc_threaded_irq_handler(int irq, void *_madc)
 			continue;
 		method = &twl4030_conversion_methods[r->method];
 		/* Read results */
-		len = twl4030_madc_read_channels(madc, method->rbase,
-						 r->channels, r->rbuf, r->raw);
+		twl4030_madc_read_channels(madc, method->rbase,
+					   r->channels, r->rbuf, r->raw);
 		/* Free request */
 		r->result_pending = false;
 		r->active = false;
@@ -525,8 +518,8 @@ err_i2c:
 			continue;
 		method = &twl4030_conversion_methods[r->method];
 		/* Read results */
-		len = twl4030_madc_read_channels(madc, method->rbase,
-						 r->channels, r->rbuf, r->raw);
+		twl4030_madc_read_channels(madc, method->rbase,
+					   r->channels, r->rbuf, r->raw);
 		/* Free request */
 		r->result_pending = false;
 		r->active = false;
@@ -772,8 +765,6 @@ static int twl4030_madc_probe(struct platform_device *pdev)
 	madc->dev = &pdev->dev;
 
 	iio_dev->name = dev_name(&pdev->dev);
-	iio_dev->dev.parent = &pdev->dev;
-	iio_dev->dev.of_node = pdev->dev.of_node;
 	iio_dev->info = &twl4030_madc_iio_info;
 	iio_dev->modes = INDIO_DIRECT_MODE;
 	iio_dev->channels = twl4030_madc_iio_channels;
diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index f24148bd15de..f53e8558b560 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -94,9 +94,9 @@ struct twl6030_gpadc_data;
  * struct twl6030_gpadc_platform_data - platform specific data
  * @nchannels:		number of GPADC channels
  * @iio_channels:	iio channels
- * @twl6030_ideal:	pointer to calibration parameters
+ * @ideal:		pointer to calibration parameters
  * @start_conversion:	pointer to ADC start conversion function
- * @channel_to_reg	pointer to ADC function to convert channel to
+ * @channel_to_reg:	pointer to ADC function to convert channel to
  *			register address for reading conversion result
  * @calibrate:		pointer to calibration function
  */
@@ -900,7 +900,7 @@ static int twl6030_gpadc_probe(struct platform_device *pdev)
 
 	ret = pdata->calibrate(gpadc);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to read calibration registers\n");
+		dev_err(dev, "failed to read calibration registers\n");
 		return ret;
 	}
 
@@ -911,22 +911,23 @@ static int twl6030_gpadc_probe(struct platform_device *pdev)
 	ret = devm_request_threaded_irq(dev, irq, NULL,
 				twl6030_gpadc_irq_handler,
 				IRQF_ONESHOT, "twl6030_gpadc", indio_dev);
+	if (ret)
+		return ret;
 
 	ret = twl6030_gpadc_enable_irq(TWL6030_GPADC_RT_SW1_EOC_MASK);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to enable GPADC interrupt\n");
+		dev_err(dev, "failed to enable GPADC interrupt\n");
 		return ret;
 	}
 
 	ret = twl_i2c_write_u8(TWL6030_MODULE_ID1, TWL6030_GPADCS,
 					TWL6030_REG_TOGGLE1);
 	if (ret < 0) {
-		dev_err(&pdev->dev, "failed to enable GPADC module\n");
+		dev_err(dev, "failed to enable GPADC module\n");
 		return ret;
 	}
 
 	indio_dev->name = DRIVER_NAME;
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &twl6030_gpadc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = pdata->iio_channels;
@@ -945,7 +946,6 @@ static int twl6030_gpadc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int twl6030_gpadc_suspend(struct device *pdev)
 {
 	int ret;
@@ -969,17 +969,16 @@ static int twl6030_gpadc_resume(struct device *pdev)
 
 	return 0;
 };
-#endif
 
-static SIMPLE_DEV_PM_OPS(twl6030_gpadc_pm_ops, twl6030_gpadc_suspend,
-					twl6030_gpadc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(twl6030_gpadc_pm_ops, twl6030_gpadc_suspend,
+				twl6030_gpadc_resume);
 
 static struct platform_driver twl6030_gpadc_driver = {
 	.probe		= twl6030_gpadc_probe,
 	.remove		= twl6030_gpadc_remove,
 	.driver		= {
 		.name	= DRIVER_NAME,
-		.pm	= &twl6030_gpadc_pm_ops,
+		.pm	= pm_sleep_ptr(&twl6030_gpadc_pm_ops),
 		.of_match_table = of_twl6030_match_tbl,
 	},
 };
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index cb7380bf07ca..c6b16cf6e367 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -5,7 +5,9 @@
  * Copyright 2013 Freescale Semiconductor, Inc.
  */
 
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/property.h>
 #include <linux/platform_device.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
@@ -14,10 +16,7 @@
 #include <linux/io.h>
 #include <linux/clk.h>
 #include <linux/completion.h>
-#include <linux/of.h>
-#include <linux/of_irq.h>
 #include <linux/regulator/consumer.h>
-#include <linux/of_platform.h>
 #include <linux/err.h>
 
 #include <linux/iio/iio.h>
@@ -167,7 +166,11 @@ struct vf610_adc {
 	u32 sample_freq_avail[5];
 
 	struct completion completion;
-	u16 buffer[8];
+	/* Ensure the timestamp is naturally aligned */
+	struct {
+		u16 chan;
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 };
@@ -579,9 +582,9 @@ static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
 	if (coco & VF610_ADC_HS_COCO0) {
 		info->value = vf610_adc_read_data(info);
 		if (iio_buffer_enabled(indio_dev)) {
-			info->buffer[0] = info->value;
+			info->scan.chan = info->value;
 			iio_push_to_buffers_with_timestamp(indio_dev,
-					info->buffer,
+					&info->scan,
 					iio_get_time_ns(indio_dev));
 			iio_trigger_notify_done(indio_dev->trig);
 		} else
@@ -724,13 +727,8 @@ static int vf610_adc_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct vf610_adc *info = iio_priv(indio_dev);
 	unsigned int channel;
-	int ret;
 	int val;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret)
-		return ret;
-
 	val = readl(info->regs + VF610_REG_ADC_GC);
 	val |= VF610_ADC_ADCON;
 	writel(val, info->regs + VF610_REG_ADC_GC);
@@ -761,7 +759,7 @@ static int vf610_adc_buffer_predisable(struct iio_dev *indio_dev)
 
 	writel(hc_cfg, info->regs + VF610_REG_ADC_HC0);
 
-	return iio_triggered_buffer_predisable(indio_dev);
+	return 0;
 }
 
 static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
@@ -800,6 +798,7 @@ MODULE_DEVICE_TABLE(of, vf610_adc_match);
 
 static int vf610_adc_probe(struct platform_device *pdev)
 {
+	struct device *dev = &pdev->dev;
 	struct vf610_adc *info;
 	struct iio_dev *indio_dev;
 	int irq;
@@ -847,21 +846,16 @@ static int vf610_adc_probe(struct platform_device *pdev)
 
 	info->vref_uv = regulator_get_voltage(info->vref);
 
-	of_property_read_u32_array(pdev->dev.of_node, "fsl,adck-max-frequency",
-			info->max_adck_rate, 3);
+	device_property_read_u32_array(dev, "fsl,adck-max-frequency", info->max_adck_rate, 3);
 
-	ret = of_property_read_u32(pdev->dev.of_node, "min-sample-time",
-			&info->adc_feature.default_sample_time);
-	if (ret)
-		info->adc_feature.default_sample_time = DEFAULT_SAMPLE_TIME;
+	info->adc_feature.default_sample_time = DEFAULT_SAMPLE_TIME;
+	device_property_read_u32(dev, "min-sample-time", &info->adc_feature.default_sample_time);
 
 	platform_set_drvdata(pdev, indio_dev);
 
 	init_completion(&info->completion);
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &vf610_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = vf610_adc_iio_channels;
@@ -915,7 +909,6 @@ static int vf610_adc_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int vf610_adc_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -955,9 +948,9 @@ disable_reg:
 	regulator_disable(info->vref);
 	return ret;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(vf610_adc_pm_ops, vf610_adc_suspend, vf610_adc_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(vf610_adc_pm_ops, vf610_adc_suspend,
+				vf610_adc_resume);
 
 static struct platform_driver vf610_adc_driver = {
 	.probe          = vf610_adc_probe,
@@ -965,7 +958,7 @@ static struct platform_driver vf610_adc_driver = {
 	.driver         = {
 		.name   = DRIVER_NAME,
 		.of_match_table = vf610_adc_match,
-		.pm     = &vf610_adc_pm_ops,
+		.pm     = pm_sleep_ptr(&vf610_adc_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/adc/viperboard_adc.c b/drivers/iio/adc/viperboard_adc.c
index 1d2aeb04069b..1028b101cf56 100644
--- a/drivers/iio/adc/viperboard_adc.c
+++ b/drivers/iio/adc/viperboard_adc.c
@@ -121,7 +121,6 @@ static int vprbrd_adc_probe(struct platform_device *pdev)
 	adc = iio_priv(indio_dev);
 	adc->vb = vb;
 	indio_dev->name = "viperboard adc";
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &vprbrd_adc_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = vprbrd_adc_iio_channels;
diff --git a/drivers/iio/adc/xilinx-ams.c b/drivers/iio/adc/xilinx-ams.c
new file mode 100644
index 000000000000..5b4bdf3a26bb
--- /dev/null
+++ b/drivers/iio/adc/xilinx-ams.c
@@ -0,0 +1,1440 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Xilinx AMS driver
+ *
+ *  Copyright (C) 2021 Xilinx, Inc.
+ *
+ *  Manish Narani <mnarani@xilinx.com>
+ *  Rajnikant Bhojani <rajnikant.bhojani@xilinx.com>
+ */
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/devm-helpers.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/overflow.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+
+/* AMS registers definitions */
+#define AMS_ISR_0			0x010
+#define AMS_ISR_1			0x014
+#define AMS_IER_0			0x020
+#define AMS_IER_1			0x024
+#define AMS_IDR_0			0x028
+#define AMS_IDR_1			0x02C
+#define AMS_PS_CSTS			0x040
+#define AMS_PL_CSTS			0x044
+
+#define AMS_VCC_PSPLL0			0x060
+#define AMS_VCC_PSPLL3			0x06C
+#define AMS_VCCINT			0x078
+#define AMS_VCCBRAM			0x07C
+#define AMS_VCCAUX			0x080
+#define AMS_PSDDRPLL			0x084
+#define AMS_PSINTFPDDR			0x09C
+
+#define AMS_VCC_PSPLL0_CH		48
+#define AMS_VCC_PSPLL3_CH		51
+#define AMS_VCCINT_CH			54
+#define AMS_VCCBRAM_CH			55
+#define AMS_VCCAUX_CH			56
+#define AMS_PSDDRPLL_CH			57
+#define AMS_PSINTFPDDR_CH		63
+
+#define AMS_REG_CONFIG0			0x100
+#define AMS_REG_CONFIG1			0x104
+#define AMS_REG_CONFIG3			0x10C
+#define AMS_REG_CONFIG4			0x110
+#define AMS_REG_SEQ_CH0			0x120
+#define AMS_REG_SEQ_CH1			0x124
+#define AMS_REG_SEQ_CH2			0x118
+
+#define AMS_VUSER0_MASK			BIT(0)
+#define AMS_VUSER1_MASK			BIT(1)
+#define AMS_VUSER2_MASK			BIT(2)
+#define AMS_VUSER3_MASK			BIT(3)
+
+#define AMS_TEMP			0x000
+#define AMS_SUPPLY1			0x004
+#define AMS_SUPPLY2			0x008
+#define AMS_VP_VN			0x00C
+#define AMS_VREFP			0x010
+#define AMS_VREFN			0x014
+#define AMS_SUPPLY3			0x018
+#define AMS_SUPPLY4			0x034
+#define AMS_SUPPLY5			0x038
+#define AMS_SUPPLY6			0x03C
+#define AMS_SUPPLY7			0x200
+#define AMS_SUPPLY8			0x204
+#define AMS_SUPPLY9			0x208
+#define AMS_SUPPLY10			0x20C
+#define AMS_VCCAMS			0x210
+#define AMS_TEMP_REMOTE			0x214
+
+#define AMS_REG_VAUX(x)			(0x40 + 4 * (x))
+
+#define AMS_PS_RESET_VALUE		0xFFFF
+#define AMS_PL_RESET_VALUE		0xFFFF
+
+#define AMS_CONF0_CHANNEL_NUM_MASK	GENMASK(6, 0)
+
+#define AMS_CONF1_SEQ_MASK		GENMASK(15, 12)
+#define AMS_CONF1_SEQ_DEFAULT		FIELD_PREP(AMS_CONF1_SEQ_MASK, 0)
+#define AMS_CONF1_SEQ_CONTINUOUS	FIELD_PREP(AMS_CONF1_SEQ_MASK, 2)
+#define AMS_CONF1_SEQ_SINGLE_CHANNEL	FIELD_PREP(AMS_CONF1_SEQ_MASK, 3)
+
+#define AMS_REG_SEQ0_MASK		GENMASK(15, 0)
+#define AMS_REG_SEQ2_MASK		GENMASK(21, 16)
+#define AMS_REG_SEQ1_MASK		GENMASK_ULL(37, 22)
+
+#define AMS_PS_SEQ_MASK			GENMASK(21, 0)
+#define AMS_PL_SEQ_MASK			GENMASK_ULL(59, 22)
+
+#define AMS_ALARM_TEMP			0x140
+#define AMS_ALARM_SUPPLY1		0x144
+#define AMS_ALARM_SUPPLY2		0x148
+#define AMS_ALARM_SUPPLY3		0x160
+#define AMS_ALARM_SUPPLY4		0x164
+#define AMS_ALARM_SUPPLY5		0x168
+#define AMS_ALARM_SUPPLY6		0x16C
+#define AMS_ALARM_SUPPLY7		0x180
+#define AMS_ALARM_SUPPLY8		0x184
+#define AMS_ALARM_SUPPLY9		0x188
+#define AMS_ALARM_SUPPLY10		0x18C
+#define AMS_ALARM_VCCAMS		0x190
+#define AMS_ALARM_TEMP_REMOTE		0x194
+#define AMS_ALARM_THRESHOLD_OFF_10	0x10
+#define AMS_ALARM_THRESHOLD_OFF_20	0x20
+
+#define AMS_ALARM_THR_DIRECT_MASK	BIT(1)
+#define AMS_ALARM_THR_MIN		0x0000
+#define AMS_ALARM_THR_MAX		(BIT(16) - 1)
+
+#define AMS_ALARM_MASK			GENMASK_ULL(63, 0)
+#define AMS_NO_OF_ALARMS		32
+#define AMS_PL_ALARM_START		16
+#define AMS_PL_ALARM_MASK		GENMASK(31, 16)
+#define AMS_ISR0_ALARM_MASK		GENMASK(31, 0)
+#define AMS_ISR1_ALARM_MASK		(GENMASK(31, 29) | GENMASK(4, 0))
+#define AMS_ISR1_EOC_MASK		BIT(3)
+#define AMS_ISR1_INTR_MASK		GENMASK_ULL(63, 32)
+#define AMS_ISR0_ALARM_2_TO_0_MASK	GENMASK(2, 0)
+#define AMS_ISR0_ALARM_6_TO_3_MASK	GENMASK(6, 3)
+#define AMS_ISR0_ALARM_12_TO_7_MASK	GENMASK(13, 8)
+#define AMS_CONF1_ALARM_2_TO_0_MASK	GENMASK(3, 1)
+#define AMS_CONF1_ALARM_6_TO_3_MASK	GENMASK(11, 8)
+#define AMS_CONF1_ALARM_12_TO_7_MASK	GENMASK(5, 0)
+#define AMS_REGCFG1_ALARM_MASK  \
+	(AMS_CONF1_ALARM_2_TO_0_MASK | AMS_CONF1_ALARM_6_TO_3_MASK | BIT(0))
+#define AMS_REGCFG3_ALARM_MASK		AMS_CONF1_ALARM_12_TO_7_MASK
+
+#define AMS_PS_CSTS_PS_READY		(BIT(27) | BIT(16))
+#define AMS_PL_CSTS_ACCESS_MASK		BIT(1)
+
+#define AMS_PL_MAX_FIXED_CHANNEL	10
+#define AMS_PL_MAX_EXT_CHANNEL		20
+
+#define AMS_INIT_POLL_TIME_US		200
+#define AMS_INIT_TIMEOUT_US		10000
+#define AMS_UNMASK_TIMEOUT_MS		500
+
+/*
+ * Following scale and offset value is derived from
+ * UG580 (v1.7) December 20, 2016
+ */
+#define AMS_SUPPLY_SCALE_1VOLT_mV		1000
+#define AMS_SUPPLY_SCALE_3VOLT_mV		3000
+#define AMS_SUPPLY_SCALE_6VOLT_mV		6000
+#define AMS_SUPPLY_SCALE_DIV_BIT	16
+
+#define AMS_TEMP_SCALE			509314
+#define AMS_TEMP_SCALE_DIV_BIT		16
+#define AMS_TEMP_OFFSET			-((280230LL << 16) / 509314)
+
+enum ams_alarm_bit {
+	AMS_ALARM_BIT_TEMP = 0,
+	AMS_ALARM_BIT_SUPPLY1 = 1,
+	AMS_ALARM_BIT_SUPPLY2 = 2,
+	AMS_ALARM_BIT_SUPPLY3 = 3,
+	AMS_ALARM_BIT_SUPPLY4 = 4,
+	AMS_ALARM_BIT_SUPPLY5 = 5,
+	AMS_ALARM_BIT_SUPPLY6 = 6,
+	AMS_ALARM_BIT_RESERVED = 7,
+	AMS_ALARM_BIT_SUPPLY7 = 8,
+	AMS_ALARM_BIT_SUPPLY8 = 9,
+	AMS_ALARM_BIT_SUPPLY9 = 10,
+	AMS_ALARM_BIT_SUPPLY10 = 11,
+	AMS_ALARM_BIT_VCCAMS = 12,
+	AMS_ALARM_BIT_TEMP_REMOTE = 13,
+};
+
+enum ams_seq {
+	AMS_SEQ_VCC_PSPLL = 0,
+	AMS_SEQ_VCC_PSBATT = 1,
+	AMS_SEQ_VCCINT = 2,
+	AMS_SEQ_VCCBRAM = 3,
+	AMS_SEQ_VCCAUX = 4,
+	AMS_SEQ_PSDDRPLL = 5,
+	AMS_SEQ_INTDDR = 6,
+};
+
+enum ams_ps_pl_seq {
+	AMS_SEQ_CALIB = 0,
+	AMS_SEQ_RSVD_1 = 1,
+	AMS_SEQ_RSVD_2 = 2,
+	AMS_SEQ_TEST = 3,
+	AMS_SEQ_RSVD_4 = 4,
+	AMS_SEQ_SUPPLY4 = 5,
+	AMS_SEQ_SUPPLY5 = 6,
+	AMS_SEQ_SUPPLY6 = 7,
+	AMS_SEQ_TEMP = 8,
+	AMS_SEQ_SUPPLY2 = 9,
+	AMS_SEQ_SUPPLY1 = 10,
+	AMS_SEQ_VP_VN = 11,
+	AMS_SEQ_VREFP = 12,
+	AMS_SEQ_VREFN = 13,
+	AMS_SEQ_SUPPLY3 = 14,
+	AMS_SEQ_CURRENT_MON = 15,
+	AMS_SEQ_SUPPLY7 = 16,
+	AMS_SEQ_SUPPLY8 = 17,
+	AMS_SEQ_SUPPLY9 = 18,
+	AMS_SEQ_SUPPLY10 = 19,
+	AMS_SEQ_VCCAMS = 20,
+	AMS_SEQ_TEMP_REMOTE = 21,
+	AMS_SEQ_MAX = 22
+};
+
+#define AMS_PS_SEQ_MAX		AMS_SEQ_MAX
+#define AMS_SEQ(x)		(AMS_SEQ_MAX + (x))
+#define PS_SEQ(x)		(x)
+#define PL_SEQ(x)		(AMS_PS_SEQ_MAX + (x))
+#define AMS_CTRL_SEQ_BASE	(AMS_PS_SEQ_MAX * 3)
+
+#define AMS_CHAN_TEMP(_scan_index, _addr) { \
+	.type = IIO_TEMP, \
+	.indexed = 1, \
+	.address = (_addr), \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+		BIT(IIO_CHAN_INFO_SCALE) | \
+		BIT(IIO_CHAN_INFO_OFFSET), \
+	.event_spec = ams_temp_events, \
+	.scan_index = _scan_index, \
+	.num_event_specs = ARRAY_SIZE(ams_temp_events), \
+}
+
+#define AMS_CHAN_VOLTAGE(_scan_index, _addr, _alarm) { \
+	.type = IIO_VOLTAGE, \
+	.indexed = 1, \
+	.address = (_addr), \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+		BIT(IIO_CHAN_INFO_SCALE), \
+	.event_spec = (_alarm) ? ams_voltage_events : NULL, \
+	.scan_index = _scan_index, \
+	.num_event_specs = (_alarm) ? ARRAY_SIZE(ams_voltage_events) : 0, \
+}
+
+#define AMS_PS_CHAN_TEMP(_scan_index, _addr) \
+	AMS_CHAN_TEMP(PS_SEQ(_scan_index), _addr)
+#define AMS_PS_CHAN_VOLTAGE(_scan_index, _addr) \
+	AMS_CHAN_VOLTAGE(PS_SEQ(_scan_index), _addr, true)
+
+#define AMS_PL_CHAN_TEMP(_scan_index, _addr) \
+	AMS_CHAN_TEMP(PL_SEQ(_scan_index), _addr)
+#define AMS_PL_CHAN_VOLTAGE(_scan_index, _addr, _alarm) \
+	AMS_CHAN_VOLTAGE(PL_SEQ(_scan_index), _addr, _alarm)
+#define AMS_PL_AUX_CHAN_VOLTAGE(_auxno) \
+	AMS_CHAN_VOLTAGE(PL_SEQ(AMS_SEQ(_auxno)), AMS_REG_VAUX(_auxno), false)
+#define AMS_CTRL_CHAN_VOLTAGE(_scan_index, _addr) \
+	AMS_CHAN_VOLTAGE(PL_SEQ(AMS_SEQ(AMS_SEQ(_scan_index))), _addr, false)
+
+/**
+ * struct ams - This structure contains necessary state for xilinx-ams to operate
+ * @base: physical base address of device
+ * @ps_base: physical base address of PS device
+ * @pl_base: physical base address of PL device
+ * @clk: clocks associated with the device
+ * @dev: pointer to device struct
+ * @lock: to handle multiple user interaction
+ * @intr_lock: to protect interrupt mask values
+ * @alarm_mask: alarm configuration
+ * @current_masked_alarm: currently masked due to alarm
+ * @intr_mask: interrupt configuration
+ * @ams_unmask_work: re-enables event once the event condition disappears
+ *
+ */
+struct ams {
+	void __iomem *base;
+	void __iomem *ps_base;
+	void __iomem *pl_base;
+	struct clk *clk;
+	struct device *dev;
+	struct mutex lock;
+	spinlock_t intr_lock;
+	unsigned int alarm_mask;
+	unsigned int current_masked_alarm;
+	u64 intr_mask;
+	struct delayed_work ams_unmask_work;
+};
+
+static inline void ams_ps_update_reg(struct ams *ams, unsigned int offset,
+				     u32 mask, u32 data)
+{
+	u32 val, regval;
+
+	val = readl(ams->ps_base + offset);
+	regval = (val & ~mask) | (data & mask);
+	writel(regval, ams->ps_base + offset);
+}
+
+static inline void ams_pl_update_reg(struct ams *ams, unsigned int offset,
+				     u32 mask, u32 data)
+{
+	u32 val, regval;
+
+	val = readl(ams->pl_base + offset);
+	regval = (val & ~mask) | (data & mask);
+	writel(regval, ams->pl_base + offset);
+}
+
+static void ams_update_intrmask(struct ams *ams, u64 mask, u64 val)
+{
+	u32 regval;
+
+	ams->intr_mask = (ams->intr_mask & ~mask) | (val & mask);
+
+	regval = ~(ams->intr_mask | ams->current_masked_alarm);
+	writel(regval, ams->base + AMS_IER_0);
+
+	regval = ~(FIELD_GET(AMS_ISR1_INTR_MASK, ams->intr_mask));
+	writel(regval, ams->base + AMS_IER_1);
+
+	regval = ams->intr_mask | ams->current_masked_alarm;
+	writel(regval, ams->base + AMS_IDR_0);
+
+	regval = FIELD_GET(AMS_ISR1_INTR_MASK, ams->intr_mask);
+	writel(regval, ams->base + AMS_IDR_1);
+}
+
+static void ams_disable_all_alarms(struct ams *ams)
+{
+	/* disable PS module alarm */
+	if (ams->ps_base) {
+		ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_REGCFG1_ALARM_MASK,
+				  AMS_REGCFG1_ALARM_MASK);
+		ams_ps_update_reg(ams, AMS_REG_CONFIG3, AMS_REGCFG3_ALARM_MASK,
+				  AMS_REGCFG3_ALARM_MASK);
+	}
+
+	/* disable PL module alarm */
+	if (ams->pl_base) {
+		ams_pl_update_reg(ams, AMS_REG_CONFIG1, AMS_REGCFG1_ALARM_MASK,
+				  AMS_REGCFG1_ALARM_MASK);
+		ams_pl_update_reg(ams, AMS_REG_CONFIG3, AMS_REGCFG3_ALARM_MASK,
+				  AMS_REGCFG3_ALARM_MASK);
+	}
+}
+
+static void ams_update_ps_alarm(struct ams *ams, unsigned long alarm_mask)
+{
+	u32 cfg;
+	u32 val;
+
+	val = FIELD_GET(AMS_ISR0_ALARM_2_TO_0_MASK, alarm_mask);
+	cfg = ~(FIELD_PREP(AMS_CONF1_ALARM_2_TO_0_MASK, val));
+
+	val = FIELD_GET(AMS_ISR0_ALARM_6_TO_3_MASK, alarm_mask);
+	cfg &= ~(FIELD_PREP(AMS_CONF1_ALARM_6_TO_3_MASK, val));
+
+	ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_REGCFG1_ALARM_MASK, cfg);
+
+	val = FIELD_GET(AMS_ISR0_ALARM_12_TO_7_MASK, alarm_mask);
+	cfg = ~(FIELD_PREP(AMS_CONF1_ALARM_12_TO_7_MASK, val));
+	ams_ps_update_reg(ams, AMS_REG_CONFIG3, AMS_REGCFG3_ALARM_MASK, cfg);
+}
+
+static void ams_update_pl_alarm(struct ams *ams, unsigned long alarm_mask)
+{
+	unsigned long pl_alarm_mask;
+	u32 cfg;
+	u32 val;
+
+	pl_alarm_mask = FIELD_GET(AMS_PL_ALARM_MASK, alarm_mask);
+
+	val = FIELD_GET(AMS_ISR0_ALARM_2_TO_0_MASK, pl_alarm_mask);
+	cfg = ~(FIELD_PREP(AMS_CONF1_ALARM_2_TO_0_MASK, val));
+
+	val = FIELD_GET(AMS_ISR0_ALARM_6_TO_3_MASK, pl_alarm_mask);
+	cfg &= ~(FIELD_PREP(AMS_CONF1_ALARM_6_TO_3_MASK, val));
+
+	ams_pl_update_reg(ams, AMS_REG_CONFIG1, AMS_REGCFG1_ALARM_MASK, cfg);
+
+	val = FIELD_GET(AMS_ISR0_ALARM_12_TO_7_MASK, pl_alarm_mask);
+	cfg = ~(FIELD_PREP(AMS_CONF1_ALARM_12_TO_7_MASK, val));
+	ams_pl_update_reg(ams, AMS_REG_CONFIG3, AMS_REGCFG3_ALARM_MASK, cfg);
+}
+
+static void ams_update_alarm(struct ams *ams, unsigned long alarm_mask)
+{
+	unsigned long flags;
+
+	if (ams->ps_base)
+		ams_update_ps_alarm(ams, alarm_mask);
+
+	if (ams->pl_base)
+		ams_update_pl_alarm(ams, alarm_mask);
+
+	spin_lock_irqsave(&ams->intr_lock, flags);
+	ams_update_intrmask(ams, AMS_ISR0_ALARM_MASK, ~alarm_mask);
+	spin_unlock_irqrestore(&ams->intr_lock, flags);
+}
+
+static void ams_enable_channel_sequence(struct iio_dev *indio_dev)
+{
+	struct ams *ams = iio_priv(indio_dev);
+	unsigned long long scan_mask;
+	int i;
+	u32 regval;
+
+	/*
+	 * Enable channel sequence. First 22 bits of scan_mask represent
+	 * PS channels, and next remaining bits represent PL channels.
+	 */
+
+	/* Run calibration of PS & PL as part of the sequence */
+	scan_mask = BIT(0) | BIT(AMS_PS_SEQ_MAX);
+	for (i = 0; i < indio_dev->num_channels; i++)
+		scan_mask |= BIT_ULL(indio_dev->channels[i].scan_index);
+
+	if (ams->ps_base) {
+		/* put sysmon in a soft reset to change the sequence */
+		ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+				  AMS_CONF1_SEQ_DEFAULT);
+
+		/* configure basic channels */
+		regval = FIELD_GET(AMS_REG_SEQ0_MASK, scan_mask);
+		writel(regval, ams->ps_base + AMS_REG_SEQ_CH0);
+
+		regval = FIELD_GET(AMS_REG_SEQ2_MASK, scan_mask);
+		writel(regval, ams->ps_base + AMS_REG_SEQ_CH2);
+
+		/* set continuous sequence mode */
+		ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+				  AMS_CONF1_SEQ_CONTINUOUS);
+	}
+
+	if (ams->pl_base) {
+		/* put sysmon in a soft reset to change the sequence */
+		ams_pl_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+				  AMS_CONF1_SEQ_DEFAULT);
+
+		/* configure basic channels */
+		scan_mask = FIELD_GET(AMS_PL_SEQ_MASK, scan_mask);
+
+		regval = FIELD_GET(AMS_REG_SEQ0_MASK, scan_mask);
+		writel(regval, ams->pl_base + AMS_REG_SEQ_CH0);
+
+		regval = FIELD_GET(AMS_REG_SEQ1_MASK, scan_mask);
+		writel(regval, ams->pl_base + AMS_REG_SEQ_CH1);
+
+		regval = FIELD_GET(AMS_REG_SEQ2_MASK, scan_mask);
+		writel(regval, ams->pl_base + AMS_REG_SEQ_CH2);
+
+		/* set continuous sequence mode */
+		ams_pl_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+				  AMS_CONF1_SEQ_CONTINUOUS);
+	}
+}
+
+static int ams_init_device(struct ams *ams)
+{
+	u32 expect = AMS_PS_CSTS_PS_READY;
+	u32 reg, value;
+	int ret;
+
+	/* reset AMS */
+	if (ams->ps_base) {
+		writel(AMS_PS_RESET_VALUE, ams->ps_base + AMS_VP_VN);
+
+		ret = readl_poll_timeout(ams->base + AMS_PS_CSTS, reg, (reg & expect),
+					 AMS_INIT_POLL_TIME_US, AMS_INIT_TIMEOUT_US);
+		if (ret)
+			return ret;
+
+		/* put sysmon in a default state */
+		ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+				  AMS_CONF1_SEQ_DEFAULT);
+	}
+
+	if (ams->pl_base) {
+		value = readl(ams->base + AMS_PL_CSTS);
+		if (value == 0)
+			return 0;
+
+		writel(AMS_PL_RESET_VALUE, ams->pl_base + AMS_VP_VN);
+
+		/* put sysmon in a default state */
+		ams_pl_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+				  AMS_CONF1_SEQ_DEFAULT);
+	}
+
+	ams_disable_all_alarms(ams);
+
+	/* Disable interrupt */
+	ams_update_intrmask(ams, AMS_ALARM_MASK, AMS_ALARM_MASK);
+
+	/* Clear any pending interrupt */
+	writel(AMS_ISR0_ALARM_MASK, ams->base + AMS_ISR_0);
+	writel(AMS_ISR1_ALARM_MASK, ams->base + AMS_ISR_1);
+
+	return 0;
+}
+
+static int ams_enable_single_channel(struct ams *ams, unsigned int offset)
+{
+	u8 channel_num;
+
+	switch (offset) {
+	case AMS_VCC_PSPLL0:
+		channel_num = AMS_VCC_PSPLL0_CH;
+		break;
+	case AMS_VCC_PSPLL3:
+		channel_num = AMS_VCC_PSPLL3_CH;
+		break;
+	case AMS_VCCINT:
+		channel_num = AMS_VCCINT_CH;
+		break;
+	case AMS_VCCBRAM:
+		channel_num = AMS_VCCBRAM_CH;
+		break;
+	case AMS_VCCAUX:
+		channel_num = AMS_VCCAUX_CH;
+		break;
+	case AMS_PSDDRPLL:
+		channel_num = AMS_PSDDRPLL_CH;
+		break;
+	case AMS_PSINTFPDDR:
+		channel_num = AMS_PSINTFPDDR_CH;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* put sysmon in a soft reset to change the sequence */
+	ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+			  AMS_CONF1_SEQ_DEFAULT);
+
+	/* write the channel number */
+	ams_ps_update_reg(ams, AMS_REG_CONFIG0, AMS_CONF0_CHANNEL_NUM_MASK,
+			  channel_num);
+
+	/* set single channel, sequencer off mode */
+	ams_ps_update_reg(ams, AMS_REG_CONFIG1, AMS_CONF1_SEQ_MASK,
+			  AMS_CONF1_SEQ_SINGLE_CHANNEL);
+
+	return 0;
+}
+
+static int ams_read_vcc_reg(struct ams *ams, unsigned int offset, u32 *data)
+{
+	u32 expect = AMS_ISR1_EOC_MASK;
+	u32 reg;
+	int ret;
+
+	ret = ams_enable_single_channel(ams, offset);
+	if (ret)
+		return ret;
+
+	/* clear end-of-conversion flag, wait for next conversion to complete */
+	writel(expect, ams->base + AMS_ISR_1);
+	ret = readl_poll_timeout(ams->base + AMS_ISR_1, reg, (reg & expect),
+				 AMS_INIT_POLL_TIME_US, AMS_INIT_TIMEOUT_US);
+	if (ret)
+		return ret;
+
+	*data = readl(ams->base + offset);
+
+	return 0;
+}
+
+static int ams_get_ps_scale(int address)
+{
+	int val;
+
+	switch (address) {
+	case AMS_SUPPLY1:
+	case AMS_SUPPLY2:
+	case AMS_SUPPLY3:
+	case AMS_SUPPLY4:
+	case AMS_SUPPLY9:
+	case AMS_SUPPLY10:
+	case AMS_VCCAMS:
+		val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	case AMS_SUPPLY5:
+	case AMS_SUPPLY6:
+	case AMS_SUPPLY7:
+	case AMS_SUPPLY8:
+		val = AMS_SUPPLY_SCALE_6VOLT_mV;
+		break;
+	default:
+		val = AMS_SUPPLY_SCALE_1VOLT_mV;
+		break;
+	}
+
+	return val;
+}
+
+static int ams_get_pl_scale(struct ams *ams, int address)
+{
+	int val, regval;
+
+	switch (address) {
+	case AMS_SUPPLY1:
+	case AMS_SUPPLY2:
+	case AMS_SUPPLY3:
+	case AMS_SUPPLY4:
+	case AMS_SUPPLY5:
+	case AMS_SUPPLY6:
+	case AMS_VCCAMS:
+	case AMS_VREFP:
+	case AMS_VREFN:
+		val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	case AMS_SUPPLY7:
+		regval = readl(ams->pl_base + AMS_REG_CONFIG4);
+		if (FIELD_GET(AMS_VUSER0_MASK, regval))
+			val = AMS_SUPPLY_SCALE_6VOLT_mV;
+		else
+			val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	case AMS_SUPPLY8:
+		regval = readl(ams->pl_base + AMS_REG_CONFIG4);
+		if (FIELD_GET(AMS_VUSER1_MASK, regval))
+			val = AMS_SUPPLY_SCALE_6VOLT_mV;
+		else
+			val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	case AMS_SUPPLY9:
+		regval = readl(ams->pl_base + AMS_REG_CONFIG4);
+		if (FIELD_GET(AMS_VUSER2_MASK, regval))
+			val = AMS_SUPPLY_SCALE_6VOLT_mV;
+		else
+			val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	case AMS_SUPPLY10:
+		regval = readl(ams->pl_base + AMS_REG_CONFIG4);
+		if (FIELD_GET(AMS_VUSER3_MASK, regval))
+			val = AMS_SUPPLY_SCALE_6VOLT_mV;
+		else
+			val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	case AMS_VP_VN:
+	case AMS_REG_VAUX(0) ... AMS_REG_VAUX(15):
+		val = AMS_SUPPLY_SCALE_1VOLT_mV;
+		break;
+	default:
+		val = AMS_SUPPLY_SCALE_1VOLT_mV;
+		break;
+	}
+
+	return val;
+}
+
+static int ams_get_ctrl_scale(int address)
+{
+	int val;
+
+	switch (address) {
+	case AMS_VCC_PSPLL0:
+	case AMS_VCC_PSPLL3:
+	case AMS_VCCINT:
+	case AMS_VCCBRAM:
+	case AMS_VCCAUX:
+	case AMS_PSDDRPLL:
+	case AMS_PSINTFPDDR:
+		val = AMS_SUPPLY_SCALE_3VOLT_mV;
+		break;
+	default:
+		val = AMS_SUPPLY_SCALE_1VOLT_mV;
+		break;
+	}
+
+	return val;
+}
+
+static int ams_read_raw(struct iio_dev *indio_dev,
+			struct iio_chan_spec const *chan,
+			int *val, int *val2, long mask)
+{
+	struct ams *ams = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&ams->lock);
+		if (chan->scan_index >= AMS_CTRL_SEQ_BASE) {
+			ret = ams_read_vcc_reg(ams, chan->address, val);
+			if (ret)
+				goto unlock_mutex;
+			ams_enable_channel_sequence(indio_dev);
+		} else if (chan->scan_index >= AMS_PS_SEQ_MAX)
+			*val = readl(ams->pl_base + chan->address);
+		else
+			*val = readl(ams->ps_base + chan->address);
+
+		ret = IIO_VAL_INT;
+unlock_mutex:
+		mutex_unlock(&ams->lock);
+		return ret;
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (chan->scan_index < AMS_PS_SEQ_MAX)
+				*val = ams_get_ps_scale(chan->address);
+			else if (chan->scan_index >= AMS_PS_SEQ_MAX &&
+				 chan->scan_index < AMS_CTRL_SEQ_BASE)
+				*val = ams_get_pl_scale(ams, chan->address);
+			else
+				*val = ams_get_ctrl_scale(chan->address);
+
+			*val2 = AMS_SUPPLY_SCALE_DIV_BIT;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		case IIO_TEMP:
+			*val = AMS_TEMP_SCALE;
+			*val2 = AMS_TEMP_SCALE_DIV_BIT;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		/* Only the temperature channel has an offset */
+		*val = AMS_TEMP_OFFSET;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ams_get_alarm_offset(int scan_index, enum iio_event_direction dir)
+{
+	int offset;
+
+	if (scan_index >= AMS_PS_SEQ_MAX)
+		scan_index -= AMS_PS_SEQ_MAX;
+
+	if (dir == IIO_EV_DIR_FALLING) {
+		if (scan_index < AMS_SEQ_SUPPLY7)
+			offset = AMS_ALARM_THRESHOLD_OFF_10;
+		else
+			offset = AMS_ALARM_THRESHOLD_OFF_20;
+	} else {
+		offset = 0;
+	}
+
+	switch (scan_index) {
+	case AMS_SEQ_TEMP:
+		return AMS_ALARM_TEMP + offset;
+	case AMS_SEQ_SUPPLY1:
+		return AMS_ALARM_SUPPLY1 + offset;
+	case AMS_SEQ_SUPPLY2:
+		return AMS_ALARM_SUPPLY2 + offset;
+	case AMS_SEQ_SUPPLY3:
+		return AMS_ALARM_SUPPLY3 + offset;
+	case AMS_SEQ_SUPPLY4:
+		return AMS_ALARM_SUPPLY4 + offset;
+	case AMS_SEQ_SUPPLY5:
+		return AMS_ALARM_SUPPLY5 + offset;
+	case AMS_SEQ_SUPPLY6:
+		return AMS_ALARM_SUPPLY6 + offset;
+	case AMS_SEQ_SUPPLY7:
+		return AMS_ALARM_SUPPLY7 + offset;
+	case AMS_SEQ_SUPPLY8:
+		return AMS_ALARM_SUPPLY8 + offset;
+	case AMS_SEQ_SUPPLY9:
+		return AMS_ALARM_SUPPLY9 + offset;
+	case AMS_SEQ_SUPPLY10:
+		return AMS_ALARM_SUPPLY10 + offset;
+	case AMS_SEQ_VCCAMS:
+		return AMS_ALARM_VCCAMS + offset;
+	case AMS_SEQ_TEMP_REMOTE:
+		return AMS_ALARM_TEMP_REMOTE + offset;
+	default:
+		return 0;
+	}
+}
+
+static const struct iio_chan_spec *ams_event_to_channel(struct iio_dev *dev,
+							u32 event)
+{
+	int scan_index = 0, i;
+
+	if (event >= AMS_PL_ALARM_START) {
+		event -= AMS_PL_ALARM_START;
+		scan_index = AMS_PS_SEQ_MAX;
+	}
+
+	switch (event) {
+	case AMS_ALARM_BIT_TEMP:
+		scan_index += AMS_SEQ_TEMP;
+		break;
+	case AMS_ALARM_BIT_SUPPLY1:
+		scan_index += AMS_SEQ_SUPPLY1;
+		break;
+	case AMS_ALARM_BIT_SUPPLY2:
+		scan_index += AMS_SEQ_SUPPLY2;
+		break;
+	case AMS_ALARM_BIT_SUPPLY3:
+		scan_index += AMS_SEQ_SUPPLY3;
+		break;
+	case AMS_ALARM_BIT_SUPPLY4:
+		scan_index += AMS_SEQ_SUPPLY4;
+		break;
+	case AMS_ALARM_BIT_SUPPLY5:
+		scan_index += AMS_SEQ_SUPPLY5;
+		break;
+	case AMS_ALARM_BIT_SUPPLY6:
+		scan_index += AMS_SEQ_SUPPLY6;
+		break;
+	case AMS_ALARM_BIT_SUPPLY7:
+		scan_index += AMS_SEQ_SUPPLY7;
+		break;
+	case AMS_ALARM_BIT_SUPPLY8:
+		scan_index += AMS_SEQ_SUPPLY8;
+		break;
+	case AMS_ALARM_BIT_SUPPLY9:
+		scan_index += AMS_SEQ_SUPPLY9;
+		break;
+	case AMS_ALARM_BIT_SUPPLY10:
+		scan_index += AMS_SEQ_SUPPLY10;
+		break;
+	case AMS_ALARM_BIT_VCCAMS:
+		scan_index += AMS_SEQ_VCCAMS;
+		break;
+	case AMS_ALARM_BIT_TEMP_REMOTE:
+		scan_index += AMS_SEQ_TEMP_REMOTE;
+		break;
+	default:
+		break;
+	}
+
+	for (i = 0; i < dev->num_channels; i++)
+		if (dev->channels[i].scan_index == scan_index)
+			break;
+
+	return &dev->channels[i];
+}
+
+static int ams_get_alarm_mask(int scan_index)
+{
+	int bit = 0;
+
+	if (scan_index >= AMS_PS_SEQ_MAX) {
+		bit = AMS_PL_ALARM_START;
+		scan_index -= AMS_PS_SEQ_MAX;
+	}
+
+	switch (scan_index) {
+	case AMS_SEQ_TEMP:
+		return BIT(AMS_ALARM_BIT_TEMP + bit);
+	case AMS_SEQ_SUPPLY1:
+		return BIT(AMS_ALARM_BIT_SUPPLY1 + bit);
+	case AMS_SEQ_SUPPLY2:
+		return BIT(AMS_ALARM_BIT_SUPPLY2 + bit);
+	case AMS_SEQ_SUPPLY3:
+		return BIT(AMS_ALARM_BIT_SUPPLY3 + bit);
+	case AMS_SEQ_SUPPLY4:
+		return BIT(AMS_ALARM_BIT_SUPPLY4 + bit);
+	case AMS_SEQ_SUPPLY5:
+		return BIT(AMS_ALARM_BIT_SUPPLY5 + bit);
+	case AMS_SEQ_SUPPLY6:
+		return BIT(AMS_ALARM_BIT_SUPPLY6 + bit);
+	case AMS_SEQ_SUPPLY7:
+		return BIT(AMS_ALARM_BIT_SUPPLY7 + bit);
+	case AMS_SEQ_SUPPLY8:
+		return BIT(AMS_ALARM_BIT_SUPPLY8 + bit);
+	case AMS_SEQ_SUPPLY9:
+		return BIT(AMS_ALARM_BIT_SUPPLY9 + bit);
+	case AMS_SEQ_SUPPLY10:
+		return BIT(AMS_ALARM_BIT_SUPPLY10 + bit);
+	case AMS_SEQ_VCCAMS:
+		return BIT(AMS_ALARM_BIT_VCCAMS + bit);
+	case AMS_SEQ_TEMP_REMOTE:
+		return BIT(AMS_ALARM_BIT_TEMP_REMOTE + bit);
+	default:
+		return 0;
+	}
+}
+
+static int ams_read_event_config(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir)
+{
+	struct ams *ams = iio_priv(indio_dev);
+
+	return !!(ams->alarm_mask & ams_get_alarm_mask(chan->scan_index));
+}
+
+static int ams_write_event_config(struct iio_dev *indio_dev,
+				  const struct iio_chan_spec *chan,
+				  enum iio_event_type type,
+				  enum iio_event_direction dir,
+				  int state)
+{
+	struct ams *ams = iio_priv(indio_dev);
+	unsigned int alarm;
+
+	alarm = ams_get_alarm_mask(chan->scan_index);
+
+	mutex_lock(&ams->lock);
+
+	if (state)
+		ams->alarm_mask |= alarm;
+	else
+		ams->alarm_mask &= ~alarm;
+
+	ams_update_alarm(ams, ams->alarm_mask);
+
+	mutex_unlock(&ams->lock);
+
+	return 0;
+}
+
+static int ams_read_event_value(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir,
+				enum iio_event_info info, int *val, int *val2)
+{
+	struct ams *ams = iio_priv(indio_dev);
+	unsigned int offset = ams_get_alarm_offset(chan->scan_index, dir);
+
+	mutex_lock(&ams->lock);
+
+	if (chan->scan_index >= AMS_PS_SEQ_MAX)
+		*val = readl(ams->pl_base + offset);
+	else
+		*val = readl(ams->ps_base + offset);
+
+	mutex_unlock(&ams->lock);
+
+	return IIO_VAL_INT;
+}
+
+static int ams_write_event_value(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir,
+				 enum iio_event_info info, int val, int val2)
+{
+	struct ams *ams = iio_priv(indio_dev);
+	unsigned int offset;
+
+	mutex_lock(&ams->lock);
+
+	/* Set temperature channel threshold to direct threshold */
+	if (chan->type == IIO_TEMP) {
+		offset = ams_get_alarm_offset(chan->scan_index, IIO_EV_DIR_FALLING);
+
+		if (chan->scan_index >= AMS_PS_SEQ_MAX)
+			ams_pl_update_reg(ams, offset,
+					  AMS_ALARM_THR_DIRECT_MASK,
+					  AMS_ALARM_THR_DIRECT_MASK);
+		else
+			ams_ps_update_reg(ams, offset,
+					  AMS_ALARM_THR_DIRECT_MASK,
+					  AMS_ALARM_THR_DIRECT_MASK);
+	}
+
+	offset = ams_get_alarm_offset(chan->scan_index, dir);
+	if (chan->scan_index >= AMS_PS_SEQ_MAX)
+		writel(val, ams->pl_base + offset);
+	else
+		writel(val, ams->ps_base + offset);
+
+	mutex_unlock(&ams->lock);
+
+	return 0;
+}
+
+static void ams_handle_event(struct iio_dev *indio_dev, u32 event)
+{
+	const struct iio_chan_spec *chan;
+
+	chan = ams_event_to_channel(indio_dev, event);
+
+	if (chan->type == IIO_TEMP) {
+		/*
+		 * The temperature channel only supports over-temperature
+		 * events.
+		 */
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
+						    IIO_EV_TYPE_THRESH,
+						    IIO_EV_DIR_RISING),
+			       iio_get_time_ns(indio_dev));
+	} else {
+		/*
+		 * For other channels we don't know whether it is a upper or
+		 * lower threshold event. Userspace will have to check the
+		 * channel value if it wants to know.
+		 */
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(chan->type, chan->channel,
+						    IIO_EV_TYPE_THRESH,
+						    IIO_EV_DIR_EITHER),
+			       iio_get_time_ns(indio_dev));
+	}
+}
+
+static void ams_handle_events(struct iio_dev *indio_dev, unsigned long events)
+{
+	unsigned int bit;
+
+	for_each_set_bit(bit, &events, AMS_NO_OF_ALARMS)
+		ams_handle_event(indio_dev, bit);
+}
+
+/**
+ * ams_unmask_worker - ams alarm interrupt unmask worker
+ * @work: work to be done
+ *
+ * The ZynqMP threshold interrupts are level sensitive. Since we can't make the
+ * threshold condition go way from within the interrupt handler, this means as
+ * soon as a threshold condition is present we would enter the interrupt handler
+ * again and again. To work around this we mask all active threshold interrupts
+ * in the interrupt handler and start a timer. In this timer we poll the
+ * interrupt status and only if the interrupt is inactive we unmask it again.
+ */
+static void ams_unmask_worker(struct work_struct *work)
+{
+	struct ams *ams = container_of(work, struct ams, ams_unmask_work.work);
+	unsigned int status, unmask;
+
+	spin_lock_irq(&ams->intr_lock);
+
+	status = readl(ams->base + AMS_ISR_0);
+
+	/* Clear those bits which are not active anymore */
+	unmask = (ams->current_masked_alarm ^ status) & ams->current_masked_alarm;
+
+	/* Clear status of disabled alarm */
+	unmask |= ams->intr_mask;
+
+	ams->current_masked_alarm &= status;
+
+	/* Also clear those which are masked out anyway */
+	ams->current_masked_alarm &= ~ams->intr_mask;
+
+	/* Clear the interrupts before we unmask them */
+	writel(unmask, ams->base + AMS_ISR_0);
+
+	ams_update_intrmask(ams, ~AMS_ALARM_MASK, ~AMS_ALARM_MASK);
+
+	spin_unlock_irq(&ams->intr_lock);
+
+	/* If still pending some alarm re-trigger the timer */
+	if (ams->current_masked_alarm)
+		schedule_delayed_work(&ams->ams_unmask_work,
+				      msecs_to_jiffies(AMS_UNMASK_TIMEOUT_MS));
+}
+
+static irqreturn_t ams_irq(int irq, void *data)
+{
+	struct iio_dev *indio_dev = data;
+	struct ams *ams = iio_priv(indio_dev);
+	u32 isr0;
+
+	spin_lock(&ams->intr_lock);
+
+	isr0 = readl(ams->base + AMS_ISR_0);
+
+	/* Only process alarms that are not masked */
+	isr0 &= ~((ams->intr_mask & AMS_ISR0_ALARM_MASK) | ams->current_masked_alarm);
+	if (!isr0) {
+		spin_unlock(&ams->intr_lock);
+		return IRQ_NONE;
+	}
+
+	/* Clear interrupt */
+	writel(isr0, ams->base + AMS_ISR_0);
+
+	/* Mask the alarm interrupts until cleared */
+	ams->current_masked_alarm |= isr0;
+	ams_update_intrmask(ams, ~AMS_ALARM_MASK, ~AMS_ALARM_MASK);
+
+	ams_handle_events(indio_dev, isr0);
+
+	schedule_delayed_work(&ams->ams_unmask_work,
+			      msecs_to_jiffies(AMS_UNMASK_TIMEOUT_MS));
+
+	spin_unlock(&ams->intr_lock);
+
+	return IRQ_HANDLED;
+}
+
+static const struct iio_event_spec ams_temp_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE) | BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
+static const struct iio_event_spec ams_voltage_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec ams_ps_channels[] = {
+	AMS_PS_CHAN_TEMP(AMS_SEQ_TEMP, AMS_TEMP),
+	AMS_PS_CHAN_TEMP(AMS_SEQ_TEMP_REMOTE, AMS_TEMP_REMOTE),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY1, AMS_SUPPLY1),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY2, AMS_SUPPLY2),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY3, AMS_SUPPLY3),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY4, AMS_SUPPLY4),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY5, AMS_SUPPLY5),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY6, AMS_SUPPLY6),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY7, AMS_SUPPLY7),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY8, AMS_SUPPLY8),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY9, AMS_SUPPLY9),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_SUPPLY10, AMS_SUPPLY10),
+	AMS_PS_CHAN_VOLTAGE(AMS_SEQ_VCCAMS, AMS_VCCAMS),
+};
+
+static const struct iio_chan_spec ams_pl_channels[] = {
+	AMS_PL_CHAN_TEMP(AMS_SEQ_TEMP, AMS_TEMP),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY1, AMS_SUPPLY1, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY2, AMS_SUPPLY2, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_VREFP, AMS_VREFP, false),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_VREFN, AMS_VREFN, false),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY3, AMS_SUPPLY3, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY4, AMS_SUPPLY4, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY5, AMS_SUPPLY5, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY6, AMS_SUPPLY6, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_VCCAMS, AMS_VCCAMS, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_VP_VN, AMS_VP_VN, false),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY7, AMS_SUPPLY7, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY8, AMS_SUPPLY8, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY9, AMS_SUPPLY9, true),
+	AMS_PL_CHAN_VOLTAGE(AMS_SEQ_SUPPLY10, AMS_SUPPLY10, true),
+	AMS_PL_AUX_CHAN_VOLTAGE(0),
+	AMS_PL_AUX_CHAN_VOLTAGE(1),
+	AMS_PL_AUX_CHAN_VOLTAGE(2),
+	AMS_PL_AUX_CHAN_VOLTAGE(3),
+	AMS_PL_AUX_CHAN_VOLTAGE(4),
+	AMS_PL_AUX_CHAN_VOLTAGE(5),
+	AMS_PL_AUX_CHAN_VOLTAGE(6),
+	AMS_PL_AUX_CHAN_VOLTAGE(7),
+	AMS_PL_AUX_CHAN_VOLTAGE(8),
+	AMS_PL_AUX_CHAN_VOLTAGE(9),
+	AMS_PL_AUX_CHAN_VOLTAGE(10),
+	AMS_PL_AUX_CHAN_VOLTAGE(11),
+	AMS_PL_AUX_CHAN_VOLTAGE(12),
+	AMS_PL_AUX_CHAN_VOLTAGE(13),
+	AMS_PL_AUX_CHAN_VOLTAGE(14),
+	AMS_PL_AUX_CHAN_VOLTAGE(15),
+};
+
+static const struct iio_chan_spec ams_ctrl_channels[] = {
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_VCC_PSPLL, AMS_VCC_PSPLL0),
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_VCC_PSBATT, AMS_VCC_PSPLL3),
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_VCCINT, AMS_VCCINT),
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_VCCBRAM, AMS_VCCBRAM),
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_VCCAUX, AMS_VCCAUX),
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_PSDDRPLL, AMS_PSDDRPLL),
+	AMS_CTRL_CHAN_VOLTAGE(AMS_SEQ_INTDDR, AMS_PSINTFPDDR),
+};
+
+static int ams_get_ext_chan(struct fwnode_handle *chan_node,
+			    struct iio_chan_spec *channels, int num_channels)
+{
+	struct iio_chan_spec *chan;
+	struct fwnode_handle *child;
+	unsigned int reg, ext_chan;
+	int ret;
+
+	fwnode_for_each_child_node(chan_node, child) {
+		ret = fwnode_property_read_u32(child, "reg", &reg);
+		if (ret || reg > AMS_PL_MAX_EXT_CHANNEL + 30)
+			continue;
+
+		chan = &channels[num_channels];
+		ext_chan = reg + AMS_PL_MAX_FIXED_CHANNEL - 30;
+		memcpy(chan, &ams_pl_channels[ext_chan], sizeof(*channels));
+
+		if (fwnode_property_read_bool(child, "xlnx,bipolar"))
+			chan->scan_type.sign = 's';
+
+		num_channels++;
+	}
+
+	return num_channels;
+}
+
+static void ams_iounmap_ps(void *data)
+{
+	struct ams *ams = data;
+
+	iounmap(ams->ps_base);
+}
+
+static void ams_iounmap_pl(void *data)
+{
+	struct ams *ams = data;
+
+	iounmap(ams->pl_base);
+}
+
+static int ams_init_module(struct iio_dev *indio_dev,
+			   struct fwnode_handle *fwnode,
+			   struct iio_chan_spec *channels)
+{
+	struct device *dev = indio_dev->dev.parent;
+	struct ams *ams = iio_priv(indio_dev);
+	int num_channels = 0;
+	int ret;
+
+	if (fwnode_property_match_string(fwnode, "compatible",
+					 "xlnx,zynqmp-ams-ps") == 0) {
+		ams->ps_base = fwnode_iomap(fwnode, 0);
+		if (!ams->ps_base)
+			return -ENXIO;
+		ret = devm_add_action_or_reset(dev, ams_iounmap_ps, ams);
+		if (ret < 0)
+			return ret;
+
+		/* add PS channels to iio device channels */
+		memcpy(channels, ams_ps_channels, sizeof(ams_ps_channels));
+		num_channels = ARRAY_SIZE(ams_ps_channels);
+	} else if (fwnode_property_match_string(fwnode, "compatible",
+						"xlnx,zynqmp-ams-pl") == 0) {
+		ams->pl_base = fwnode_iomap(fwnode, 0);
+		if (!ams->pl_base)
+			return -ENXIO;
+
+		ret = devm_add_action_or_reset(dev, ams_iounmap_pl, ams);
+		if (ret < 0)
+			return ret;
+
+		/* Copy only first 10 fix channels */
+		memcpy(channels, ams_pl_channels, AMS_PL_MAX_FIXED_CHANNEL * sizeof(*channels));
+		num_channels += AMS_PL_MAX_FIXED_CHANNEL;
+		num_channels = ams_get_ext_chan(fwnode, channels,
+						num_channels);
+	} else if (fwnode_property_match_string(fwnode, "compatible",
+						"xlnx,zynqmp-ams") == 0) {
+		/* add AMS channels to iio device channels */
+		memcpy(channels, ams_ctrl_channels, sizeof(ams_ctrl_channels));
+		num_channels += ARRAY_SIZE(ams_ctrl_channels);
+	} else {
+		return -EINVAL;
+	}
+
+	return num_channels;
+}
+
+static int ams_parse_firmware(struct iio_dev *indio_dev)
+{
+	struct ams *ams = iio_priv(indio_dev);
+	struct iio_chan_spec *ams_channels, *dev_channels;
+	struct device *dev = indio_dev->dev.parent;
+	struct fwnode_handle *child = NULL;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
+	size_t ams_size, dev_size;
+	int ret, ch_cnt = 0, i, rising_off, falling_off;
+	unsigned int num_channels = 0;
+
+	ams_size = ARRAY_SIZE(ams_ps_channels) + ARRAY_SIZE(ams_pl_channels) +
+		ARRAY_SIZE(ams_ctrl_channels);
+
+	/* Initialize buffer for channel specification */
+	ams_channels = devm_kcalloc(dev, ams_size, sizeof(*ams_channels), GFP_KERNEL);
+	if (!ams_channels)
+		return -ENOMEM;
+
+	if (fwnode_device_is_available(fwnode)) {
+		ret = ams_init_module(indio_dev, fwnode, ams_channels);
+		if (ret < 0)
+			return ret;
+
+		num_channels += ret;
+	}
+
+	fwnode_for_each_child_node(fwnode, child) {
+		if (fwnode_device_is_available(child)) {
+			ret = ams_init_module(indio_dev, child, ams_channels + num_channels);
+			if (ret < 0) {
+				fwnode_handle_put(child);
+				return ret;
+			}
+
+			num_channels += ret;
+		}
+	}
+
+	for (i = 0; i < num_channels; i++) {
+		ams_channels[i].channel = ch_cnt++;
+
+		if (ams_channels[i].scan_index < AMS_CTRL_SEQ_BASE) {
+			/* set threshold to max and min for each channel */
+			falling_off =
+				ams_get_alarm_offset(ams_channels[i].scan_index,
+						     IIO_EV_DIR_FALLING);
+			rising_off =
+				ams_get_alarm_offset(ams_channels[i].scan_index,
+						     IIO_EV_DIR_RISING);
+			if (ams_channels[i].scan_index >= AMS_PS_SEQ_MAX) {
+				writel(AMS_ALARM_THR_MIN,
+				       ams->pl_base + falling_off);
+				writel(AMS_ALARM_THR_MAX,
+				       ams->pl_base + rising_off);
+			} else {
+				writel(AMS_ALARM_THR_MIN,
+				       ams->ps_base + falling_off);
+				writel(AMS_ALARM_THR_MAX,
+				       ams->ps_base + rising_off);
+			}
+		}
+	}
+
+	dev_size = array_size(sizeof(*dev_channels), num_channels);
+	if (dev_size == SIZE_MAX)
+		return -ENOMEM;
+
+	dev_channels = devm_krealloc(dev, ams_channels, dev_size, GFP_KERNEL);
+	if (!dev_channels)
+		ret = -ENOMEM;
+
+	indio_dev->channels = dev_channels;
+	indio_dev->num_channels = num_channels;
+
+	return 0;
+}
+
+static const struct iio_info iio_ams_info = {
+	.read_raw = &ams_read_raw,
+	.read_event_config = &ams_read_event_config,
+	.write_event_config = &ams_write_event_config,
+	.read_event_value = &ams_read_event_value,
+	.write_event_value = &ams_write_event_value,
+};
+
+static const struct of_device_id ams_of_match_table[] = {
+	{ .compatible = "xlnx,zynqmp-ams" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ams_of_match_table);
+
+static int ams_probe(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev;
+	struct ams *ams;
+	int ret;
+	int irq;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*ams));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	ams = iio_priv(indio_dev);
+	mutex_init(&ams->lock);
+	spin_lock_init(&ams->intr_lock);
+
+	indio_dev->name = "xilinx-ams";
+
+	indio_dev->info = &iio_ams_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ams->base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(ams->base))
+		return PTR_ERR(ams->base);
+
+	ams->clk = devm_clk_get_enabled(&pdev->dev, NULL);
+	if (IS_ERR(ams->clk))
+		return PTR_ERR(ams->clk);
+
+	ret = devm_delayed_work_autocancel(&pdev->dev, &ams->ams_unmask_work,
+					   ams_unmask_worker);
+	if (ret < 0)
+		return ret;
+
+	ret = ams_parse_firmware(indio_dev);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "failure in parsing DT\n");
+
+	ret = ams_init_device(ams);
+	if (ret)
+		return dev_err_probe(&pdev->dev, ret, "failed to initialize AMS\n");
+
+	ams_enable_channel_sequence(indio_dev);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
+	ret = devm_request_irq(&pdev->dev, irq, &ams_irq, 0, "ams-irq",
+			       indio_dev);
+	if (ret < 0)
+		return dev_err_probe(&pdev->dev, ret, "failed to register interrupt\n");
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	return devm_iio_device_register(&pdev->dev, indio_dev);
+}
+
+static int ams_suspend(struct device *dev)
+{
+	struct ams *ams = iio_priv(dev_get_drvdata(dev));
+
+	clk_disable_unprepare(ams->clk);
+
+	return 0;
+}
+
+static int ams_resume(struct device *dev)
+{
+	struct ams *ams = iio_priv(dev_get_drvdata(dev));
+
+	return clk_prepare_enable(ams->clk);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(ams_pm_ops, ams_suspend, ams_resume);
+
+static struct platform_driver ams_driver = {
+	.probe = ams_probe,
+	.driver = {
+		.name = "xilinx-ams",
+		.pm = pm_sleep_ptr(&ams_pm_ops),
+		.of_match_table = ams_of_match_table,
+	},
+};
+module_platform_driver(ams_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_AUTHOR("Xilinx, Inc.");
diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index ec227b358cd6..292f2892d223 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -3,7 +3,7 @@
  * Xilinx XADC driver
  *
  * Copyright 2013-2014 Analog Devices Inc.
- *  Author: Lars-Peter Clauen <lars@metafoo.de>
+ *  Author: Lars-Peter Clausen <lars@metafoo.de>
  *
  * Documentation for the parts can be found at:
  *  - XADC hardmacro: Xilinx UG480
@@ -17,9 +17,11 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/overflow.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 
@@ -92,7 +94,12 @@ static const unsigned int XADC_ZYNQ_UNMASK_TIMEOUT = 500;
 #define XADC_AXI_REG_GIER		0x5c
 #define XADC_AXI_REG_IPISR		0x60
 #define XADC_AXI_REG_IPIER		0x68
-#define XADC_AXI_ADC_REG_OFFSET		0x200
+
+/* 7 Series */
+#define XADC_7S_AXI_ADC_REG_OFFSET	0x200
+
+/* UltraScale */
+#define XADC_US_AXI_ADC_REG_OFFSET	0x400
 
 #define XADC_AXI_RESET_MAGIC		0xa
 #define XADC_AXI_GIER_ENABLE		BIT(31)
@@ -101,6 +108,17 @@ static const unsigned int XADC_ZYNQ_UNMASK_TIMEOUT = 500;
 #define XADC_AXI_INT_ALARM_MASK		0x3c0f
 
 #define XADC_FLAGS_BUFFERED BIT(0)
+#define XADC_FLAGS_IRQ_OPTIONAL BIT(1)
+
+/*
+ * The XADC hardware supports a samplerate of up to 1MSPS. Unfortunately it does
+ * not have a hardware FIFO. Which means an interrupt is generated for each
+ * conversion sequence. At 1MSPS sample rate the CPU in ZYNQ7000 is completely
+ * overloaded by the interrupts that it soft-lockups. For this reason the driver
+ * limits the maximum samplerate 150kSPS. At this rate the CPU is fairly busy,
+ * but still responsive.
+ */
+#define XADC_MAX_SAMPLERATE 150000
 
 static void xadc_write_reg(struct xadc *xadc, unsigned int reg,
 	uint32_t val)
@@ -437,6 +455,12 @@ static const struct xadc_ops xadc_zynq_ops = {
 	.get_dclk_rate = xadc_zynq_get_dclk_rate,
 	.interrupt_handler = xadc_zynq_interrupt_handler,
 	.update_alarm = xadc_zynq_update_alarm,
+	.type = XADC_TYPE_S7,
+};
+
+static const unsigned int xadc_axi_reg_offsets[] = {
+	[XADC_TYPE_S7] = XADC_7S_AXI_ADC_REG_OFFSET,
+	[XADC_TYPE_US] = XADC_US_AXI_ADC_REG_OFFSET,
 };
 
 static int xadc_axi_read_adc_reg(struct xadc *xadc, unsigned int reg,
@@ -444,7 +468,8 @@ static int xadc_axi_read_adc_reg(struct xadc *xadc, unsigned int reg,
 {
 	uint32_t val32;
 
-	xadc_read_reg(xadc, XADC_AXI_ADC_REG_OFFSET + reg * 4, &val32);
+	xadc_read_reg(xadc, xadc_axi_reg_offsets[xadc->ops->type] + reg * 4,
+		&val32);
 	*val = val32 & 0xffff;
 
 	return 0;
@@ -453,7 +478,8 @@ static int xadc_axi_read_adc_reg(struct xadc *xadc, unsigned int reg,
 static int xadc_axi_write_adc_reg(struct xadc *xadc, unsigned int reg,
 	uint16_t val)
 {
-	xadc_write_reg(xadc, XADC_AXI_ADC_REG_OFFSET + reg * 4, val);
+	xadc_write_reg(xadc, xadc_axi_reg_offsets[xadc->ops->type] + reg * 4,
+		val);
 
 	return 0;
 }
@@ -531,14 +557,26 @@ static unsigned long xadc_axi_get_dclk(struct xadc *xadc)
 	return clk_get_rate(xadc->clk);
 }
 
-static const struct xadc_ops xadc_axi_ops = {
+static const struct xadc_ops xadc_7s_axi_ops = {
 	.read = xadc_axi_read_adc_reg,
 	.write = xadc_axi_write_adc_reg,
 	.setup = xadc_axi_setup,
 	.get_dclk_rate = xadc_axi_get_dclk,
 	.update_alarm = xadc_axi_update_alarm,
 	.interrupt_handler = xadc_axi_interrupt_handler,
-	.flags = XADC_FLAGS_BUFFERED,
+	.flags = XADC_FLAGS_BUFFERED | XADC_FLAGS_IRQ_OPTIONAL,
+	.type = XADC_TYPE_S7,
+};
+
+static const struct xadc_ops xadc_us_axi_ops = {
+	.read = xadc_axi_read_adc_reg,
+	.write = xadc_axi_write_adc_reg,
+	.setup = xadc_axi_setup,
+	.get_dclk_rate = xadc_axi_get_dclk,
+	.update_alarm = xadc_axi_update_alarm,
+	.interrupt_handler = xadc_axi_interrupt_handler,
+	.flags = XADC_FLAGS_BUFFERED | XADC_FLAGS_IRQ_OPTIONAL,
+	.type = XADC_TYPE_US,
 };
 
 static int _xadc_update_adc_reg(struct xadc *xadc, unsigned int reg,
@@ -575,15 +613,22 @@ static int xadc_update_scan_mode(struct iio_dev *indio_dev,
 	const unsigned long *mask)
 {
 	struct xadc *xadc = iio_priv(indio_dev);
-	unsigned int n;
+	size_t new_size, n;
+	void *data;
 
 	n = bitmap_weight(mask, indio_dev->masklength);
 
-	kfree(xadc->data);
-	xadc->data = kcalloc(n, sizeof(*xadc->data), GFP_KERNEL);
-	if (!xadc->data)
+	if (check_mul_overflow(n, sizeof(*xadc->data), &new_size))
 		return -ENOMEM;
 
+	data = devm_krealloc(indio_dev->dev.parent, xadc->data,
+			     new_size, GFP_KERNEL);
+	if (!data)
+		return -ENOMEM;
+
+	memset(data, 0, new_size);
+	xadc->data = data;
+
 	return 0;
 }
 
@@ -653,7 +698,7 @@ static int xadc_trigger_set_state(struct iio_trigger *trigger, bool state)
 	mutex_lock(&xadc->mutex);
 
 	if (state) {
-		/* Only one of the two triggers can be active at the a time. */
+		/* Only one of the two triggers can be active at a time. */
 		if (xadc->trigger != NULL) {
 			ret = -EBUSY;
 			goto err_out;
@@ -674,7 +719,7 @@ static int xadc_trigger_set_state(struct iio_trigger *trigger, bool state)
 
 	spin_lock_irqsave(&xadc->lock, flags);
 	xadc_read_reg(xadc, XADC_AXI_REG_IPIER, &val);
-	xadc_write_reg(xadc, XADC_AXI_REG_IPISR, val & XADC_AXI_INT_EOS);
+	xadc_write_reg(xadc, XADC_AXI_REG_IPISR, XADC_AXI_INT_EOS);
 	if (state)
 		val |= XADC_AXI_INT_EOS;
 	else
@@ -695,40 +740,46 @@ static const struct iio_trigger_ops xadc_trigger_ops = {
 static struct iio_trigger *xadc_alloc_trigger(struct iio_dev *indio_dev,
 	const char *name)
 {
+	struct device *dev = indio_dev->dev.parent;
 	struct iio_trigger *trig;
 	int ret;
 
-	trig = iio_trigger_alloc("%s%d-%s", indio_dev->name,
-				indio_dev->id, name);
+	trig = devm_iio_trigger_alloc(dev, "%s%d-%s", indio_dev->name,
+				      iio_device_id(indio_dev), name);
 	if (trig == NULL)
 		return ERR_PTR(-ENOMEM);
 
-	trig->dev.parent = indio_dev->dev.parent;
 	trig->ops = &xadc_trigger_ops;
 	iio_trigger_set_drvdata(trig, iio_priv(indio_dev));
 
-	ret = iio_trigger_register(trig);
+	ret = devm_iio_trigger_register(dev, trig);
 	if (ret)
-		goto error_free_trig;
+		return ERR_PTR(ret);
 
 	return trig;
-
-error_free_trig:
-	iio_trigger_free(trig);
-	return ERR_PTR(ret);
 }
 
 static int xadc_power_adc_b(struct xadc *xadc, unsigned int seq_mode)
 {
 	uint16_t val;
 
+	/*
+	 * As per datasheet the power-down bits are don't care in the
+	 * UltraScale, but as per reality setting the power-down bit for the
+	 * non-existing ADC-B powers down the main ADC, so just return and don't
+	 * do anything.
+	 */
+	if (xadc->ops->type == XADC_TYPE_US)
+		return 0;
+
+	/* Powerdown the ADC-B when it is not needed. */
 	switch (seq_mode) {
 	case XADC_CONF1_SEQ_SIMULTANEOUS:
 	case XADC_CONF1_SEQ_INDEPENDENT:
-		val = XADC_CONF2_PD_ADC_B;
+		val = 0;
 		break;
 	default:
-		val = 0;
+		val = XADC_CONF2_PD_ADC_B;
 		break;
 	}
 
@@ -740,6 +791,10 @@ static int xadc_get_seq_mode(struct xadc *xadc, unsigned long scan_mode)
 {
 	unsigned int aux_scan_mode = scan_mode >> 16;
 
+	/* UltraScale has only one ADC and supports only continuous mode */
+	if (xadc->ops->type == XADC_TYPE_US)
+		return XADC_CONF1_SEQ_CONTINUOUS;
+
 	if (xadc->external_mux_mode == XADC_EXTERNAL_MUX_DUAL)
 		return XADC_CONF1_SEQ_SIMULTANEOUS;
 
@@ -797,6 +852,16 @@ static int xadc_preenable(struct iio_dev *indio_dev)
 	if (ret)
 		goto err;
 
+	/*
+	 * In simultaneous mode the upper and lower aux channels are samples at
+	 * the same time. In this mode the upper 8 bits in the sequencer
+	 * register are don't care and the lower 8 bits control two channels
+	 * each. As such we must set the bit if either the channel in the lower
+	 * group or the upper group is enabled.
+	 */
+	if (seq_mode == XADC_CONF1_SEQ_SIMULTANEOUS)
+		scan_mask = ((scan_mask >> 8) | scan_mask) & 0xff0000;
+
 	ret = xadc_write_adc_reg(xadc, XADC_REG_SEQ(1), scan_mask >> 16);
 	if (ret)
 		goto err;
@@ -818,16 +883,31 @@ err:
 
 static const struct iio_buffer_setup_ops xadc_buffer_ops = {
 	.preenable = &xadc_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
 	.postdisable = &xadc_postdisable,
 };
 
+static int xadc_read_samplerate(struct xadc *xadc)
+{
+	unsigned int div;
+	uint16_t val16;
+	int ret;
+
+	ret = xadc_read_adc_reg(xadc, XADC_REG_CONF2, &val16);
+	if (ret)
+		return ret;
+
+	div = (val16 & XADC_CONF2_DIV_MASK) >> XADC_CONF2_DIV_OFFSET;
+	if (div < 2)
+		div = 2;
+
+	return xadc_get_dclk_rate(xadc) / div / 26;
+}
+
 static int xadc_read_raw(struct iio_dev *indio_dev,
 	struct iio_chan_spec const *chan, int *val, int *val2, long info)
 {
 	struct xadc *xadc = iio_priv(indio_dev);
-	unsigned int div;
+	unsigned int bits = chan->scan_type.realbits;
 	uint16_t val16;
 	int ret;
 
@@ -839,17 +919,17 @@ static int xadc_read_raw(struct iio_dev *indio_dev,
 		if (ret < 0)
 			return ret;
 
-		val16 >>= 4;
+		val16 >>= chan->scan_type.shift;
 		if (chan->scan_type.sign == 'u')
 			*val = val16;
 		else
-			*val = sign_extend32(val16, 11);
+			*val = sign_extend32(val16, bits - 1);
 
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->type) {
 		case IIO_VOLTAGE:
-			/* V = (val * 3.0) / 4096 */
+			/* V = (val * 3.0) / 2**bits */
 			switch (chan->address) {
 			case XADC_REG_VCCINT:
 			case XADC_REG_VCCAUX:
@@ -865,56 +945,46 @@ static int xadc_read_raw(struct iio_dev *indio_dev,
 				*val = 1000;
 				break;
 			}
-			*val2 = 12;
+			*val2 = bits;
 			return IIO_VAL_FRACTIONAL_LOG2;
 		case IIO_TEMP:
-			/* Temp in C = (val * 503.975) / 4096 - 273.15 */
+			/* Temp in C = (val * 503.975) / 2**bits - 273.15 */
 			*val = 503975;
-			*val2 = 12;
+			*val2 = bits;
 			return IIO_VAL_FRACTIONAL_LOG2;
 		default:
 			return -EINVAL;
 		}
 	case IIO_CHAN_INFO_OFFSET:
 		/* Only the temperature channel has an offset */
-		*val = -((273150 << 12) / 503975);
+		*val = -((273150 << bits) / 503975);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		ret = xadc_read_adc_reg(xadc, XADC_REG_CONF2, &val16);
-		if (ret)
+		ret = xadc_read_samplerate(xadc);
+		if (ret < 0)
 			return ret;
 
-		div = (val16 & XADC_CONF2_DIV_MASK) >> XADC_CONF2_DIV_OFFSET;
-		if (div < 2)
-			div = 2;
-
-		*val = xadc_get_dclk_rate(xadc) / div / 26;
-
+		*val = ret;
 		return IIO_VAL_INT;
 	default:
 		return -EINVAL;
 	}
 }
 
-static int xadc_write_raw(struct iio_dev *indio_dev,
-	struct iio_chan_spec const *chan, int val, int val2, long info)
+static int xadc_write_samplerate(struct xadc *xadc, int val)
 {
-	struct xadc *xadc = iio_priv(indio_dev);
 	unsigned long clk_rate = xadc_get_dclk_rate(xadc);
 	unsigned int div;
 
 	if (!clk_rate)
 		return -EINVAL;
 
-	if (info != IIO_CHAN_INFO_SAMP_FREQ)
-		return -EINVAL;
-
 	if (val <= 0)
 		return -EINVAL;
 
 	/* Max. 150 kSPS */
-	if (val > 150000)
-		val = 150000;
+	if (val > XADC_MAX_SAMPLERATE)
+		val = XADC_MAX_SAMPLERATE;
 
 	val *= 26;
 
@@ -927,7 +997,7 @@ static int xadc_write_raw(struct iio_dev *indio_dev,
 	 * limit.
 	 */
 	div = clk_rate / val;
-	if (clk_rate / div / 26 > 150000)
+	if (clk_rate / div / 26 > XADC_MAX_SAMPLERATE)
 		div++;
 	if (div < 2)
 		div = 2;
@@ -938,6 +1008,17 @@ static int xadc_write_raw(struct iio_dev *indio_dev,
 		div << XADC_CONF2_DIV_OFFSET);
 }
 
+static int xadc_write_raw(struct iio_dev *indio_dev,
+	struct iio_chan_spec const *chan, int val, int val2, long info)
+{
+	struct xadc *xadc = iio_priv(indio_dev);
+
+	if (info != IIO_CHAN_INFO_SAMP_FREQ)
+		return -EINVAL;
+
+	return xadc_write_samplerate(xadc, val);
+}
+
 static const struct iio_event_spec xadc_temp_events[] = {
 	{
 		.type = IIO_EV_TYPE_THRESH,
@@ -965,7 +1046,7 @@ static const struct iio_event_spec xadc_voltage_events[] = {
 	},
 };
 
-#define XADC_CHAN_TEMP(_chan, _scan_index, _addr) { \
+#define XADC_CHAN_TEMP(_chan, _scan_index, _addr, _bits) { \
 	.type = IIO_TEMP, \
 	.indexed = 1, \
 	.channel = (_chan), \
@@ -979,14 +1060,14 @@ static const struct iio_event_spec xadc_voltage_events[] = {
 	.scan_index = (_scan_index), \
 	.scan_type = { \
 		.sign = 'u', \
-		.realbits = 12, \
+		.realbits = (_bits), \
 		.storagebits = 16, \
-		.shift = 4, \
+		.shift = 16 - (_bits), \
 		.endianness = IIO_CPU, \
 	}, \
 }
 
-#define XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, _ext, _alarm) { \
+#define XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, _bits, _ext, _alarm) { \
 	.type = IIO_VOLTAGE, \
 	.indexed = 1, \
 	.channel = (_chan), \
@@ -999,41 +1080,82 @@ static const struct iio_event_spec xadc_voltage_events[] = {
 	.scan_index = (_scan_index), \
 	.scan_type = { \
 		.sign = ((_addr) == XADC_REG_VREFN) ? 's' : 'u', \
-		.realbits = 12, \
+		.realbits = (_bits), \
 		.storagebits = 16, \
-		.shift = 4, \
+		.shift = 16 - (_bits), \
 		.endianness = IIO_CPU, \
 	}, \
 	.extend_name = _ext, \
 }
 
-static const struct iio_chan_spec xadc_channels[] = {
-	XADC_CHAN_TEMP(0, 8, XADC_REG_TEMP),
-	XADC_CHAN_VOLTAGE(0, 9, XADC_REG_VCCINT, "vccint", true),
-	XADC_CHAN_VOLTAGE(1, 10, XADC_REG_VCCAUX, "vccaux", true),
-	XADC_CHAN_VOLTAGE(2, 14, XADC_REG_VCCBRAM, "vccbram", true),
-	XADC_CHAN_VOLTAGE(3, 5, XADC_REG_VCCPINT, "vccpint", true),
-	XADC_CHAN_VOLTAGE(4, 6, XADC_REG_VCCPAUX, "vccpaux", true),
-	XADC_CHAN_VOLTAGE(5, 7, XADC_REG_VCCO_DDR, "vccoddr", true),
-	XADC_CHAN_VOLTAGE(6, 12, XADC_REG_VREFP, "vrefp", false),
-	XADC_CHAN_VOLTAGE(7, 13, XADC_REG_VREFN, "vrefn", false),
-	XADC_CHAN_VOLTAGE(8, 11, XADC_REG_VPVN, NULL, false),
-	XADC_CHAN_VOLTAGE(9, 16, XADC_REG_VAUX(0), NULL, false),
-	XADC_CHAN_VOLTAGE(10, 17, XADC_REG_VAUX(1), NULL, false),
-	XADC_CHAN_VOLTAGE(11, 18, XADC_REG_VAUX(2), NULL, false),
-	XADC_CHAN_VOLTAGE(12, 19, XADC_REG_VAUX(3), NULL, false),
-	XADC_CHAN_VOLTAGE(13, 20, XADC_REG_VAUX(4), NULL, false),
-	XADC_CHAN_VOLTAGE(14, 21, XADC_REG_VAUX(5), NULL, false),
-	XADC_CHAN_VOLTAGE(15, 22, XADC_REG_VAUX(6), NULL, false),
-	XADC_CHAN_VOLTAGE(16, 23, XADC_REG_VAUX(7), NULL, false),
-	XADC_CHAN_VOLTAGE(17, 24, XADC_REG_VAUX(8), NULL, false),
-	XADC_CHAN_VOLTAGE(18, 25, XADC_REG_VAUX(9), NULL, false),
-	XADC_CHAN_VOLTAGE(19, 26, XADC_REG_VAUX(10), NULL, false),
-	XADC_CHAN_VOLTAGE(20, 27, XADC_REG_VAUX(11), NULL, false),
-	XADC_CHAN_VOLTAGE(21, 28, XADC_REG_VAUX(12), NULL, false),
-	XADC_CHAN_VOLTAGE(22, 29, XADC_REG_VAUX(13), NULL, false),
-	XADC_CHAN_VOLTAGE(23, 30, XADC_REG_VAUX(14), NULL, false),
-	XADC_CHAN_VOLTAGE(24, 31, XADC_REG_VAUX(15), NULL, false),
+/* 7 Series */
+#define XADC_7S_CHAN_TEMP(_chan, _scan_index, _addr) \
+	XADC_CHAN_TEMP(_chan, _scan_index, _addr, 12)
+#define XADC_7S_CHAN_VOLTAGE(_chan, _scan_index, _addr, _ext, _alarm) \
+	XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, 12, _ext, _alarm)
+
+static const struct iio_chan_spec xadc_7s_channels[] = {
+	XADC_7S_CHAN_TEMP(0, 8, XADC_REG_TEMP),
+	XADC_7S_CHAN_VOLTAGE(0, 9, XADC_REG_VCCINT, "vccint", true),
+	XADC_7S_CHAN_VOLTAGE(1, 10, XADC_REG_VCCAUX, "vccaux", true),
+	XADC_7S_CHAN_VOLTAGE(2, 14, XADC_REG_VCCBRAM, "vccbram", true),
+	XADC_7S_CHAN_VOLTAGE(3, 5, XADC_REG_VCCPINT, "vccpint", true),
+	XADC_7S_CHAN_VOLTAGE(4, 6, XADC_REG_VCCPAUX, "vccpaux", true),
+	XADC_7S_CHAN_VOLTAGE(5, 7, XADC_REG_VCCO_DDR, "vccoddr", true),
+	XADC_7S_CHAN_VOLTAGE(6, 12, XADC_REG_VREFP, "vrefp", false),
+	XADC_7S_CHAN_VOLTAGE(7, 13, XADC_REG_VREFN, "vrefn", false),
+	XADC_7S_CHAN_VOLTAGE(8, 11, XADC_REG_VPVN, NULL, false),
+	XADC_7S_CHAN_VOLTAGE(9, 16, XADC_REG_VAUX(0), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(10, 17, XADC_REG_VAUX(1), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(11, 18, XADC_REG_VAUX(2), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(12, 19, XADC_REG_VAUX(3), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(13, 20, XADC_REG_VAUX(4), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(14, 21, XADC_REG_VAUX(5), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(15, 22, XADC_REG_VAUX(6), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(16, 23, XADC_REG_VAUX(7), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(17, 24, XADC_REG_VAUX(8), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(18, 25, XADC_REG_VAUX(9), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(19, 26, XADC_REG_VAUX(10), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(20, 27, XADC_REG_VAUX(11), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(21, 28, XADC_REG_VAUX(12), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(22, 29, XADC_REG_VAUX(13), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(23, 30, XADC_REG_VAUX(14), NULL, false),
+	XADC_7S_CHAN_VOLTAGE(24, 31, XADC_REG_VAUX(15), NULL, false),
+};
+
+/* UltraScale */
+#define XADC_US_CHAN_TEMP(_chan, _scan_index, _addr) \
+	XADC_CHAN_TEMP(_chan, _scan_index, _addr, 10)
+#define XADC_US_CHAN_VOLTAGE(_chan, _scan_index, _addr, _ext, _alarm) \
+	XADC_CHAN_VOLTAGE(_chan, _scan_index, _addr, 10, _ext, _alarm)
+
+static const struct iio_chan_spec xadc_us_channels[] = {
+	XADC_US_CHAN_TEMP(0, 8, XADC_REG_TEMP),
+	XADC_US_CHAN_VOLTAGE(0, 9, XADC_REG_VCCINT, "vccint", true),
+	XADC_US_CHAN_VOLTAGE(1, 10, XADC_REG_VCCAUX, "vccaux", true),
+	XADC_US_CHAN_VOLTAGE(2, 14, XADC_REG_VCCBRAM, "vccbram", true),
+	XADC_US_CHAN_VOLTAGE(3, 5, XADC_REG_VCCPINT, "vccpsintlp", true),
+	XADC_US_CHAN_VOLTAGE(4, 6, XADC_REG_VCCPAUX, "vccpsintfp", true),
+	XADC_US_CHAN_VOLTAGE(5, 7, XADC_REG_VCCO_DDR, "vccpsaux", true),
+	XADC_US_CHAN_VOLTAGE(6, 12, XADC_REG_VREFP, "vrefp", false),
+	XADC_US_CHAN_VOLTAGE(7, 13, XADC_REG_VREFN, "vrefn", false),
+	XADC_US_CHAN_VOLTAGE(8, 11, XADC_REG_VPVN, NULL, false),
+	XADC_US_CHAN_VOLTAGE(9, 16, XADC_REG_VAUX(0), NULL, false),
+	XADC_US_CHAN_VOLTAGE(10, 17, XADC_REG_VAUX(1), NULL, false),
+	XADC_US_CHAN_VOLTAGE(11, 18, XADC_REG_VAUX(2), NULL, false),
+	XADC_US_CHAN_VOLTAGE(12, 19, XADC_REG_VAUX(3), NULL, false),
+	XADC_US_CHAN_VOLTAGE(13, 20, XADC_REG_VAUX(4), NULL, false),
+	XADC_US_CHAN_VOLTAGE(14, 21, XADC_REG_VAUX(5), NULL, false),
+	XADC_US_CHAN_VOLTAGE(15, 22, XADC_REG_VAUX(6), NULL, false),
+	XADC_US_CHAN_VOLTAGE(16, 23, XADC_REG_VAUX(7), NULL, false),
+	XADC_US_CHAN_VOLTAGE(17, 24, XADC_REG_VAUX(8), NULL, false),
+	XADC_US_CHAN_VOLTAGE(18, 25, XADC_REG_VAUX(9), NULL, false),
+	XADC_US_CHAN_VOLTAGE(19, 26, XADC_REG_VAUX(10), NULL, false),
+	XADC_US_CHAN_VOLTAGE(20, 27, XADC_REG_VAUX(11), NULL, false),
+	XADC_US_CHAN_VOLTAGE(21, 28, XADC_REG_VAUX(12), NULL, false),
+	XADC_US_CHAN_VOLTAGE(22, 29, XADC_REG_VAUX(13), NULL, false),
+	XADC_US_CHAN_VOLTAGE(23, 30, XADC_REG_VAUX(14), NULL, false),
+	XADC_US_CHAN_VOLTAGE(24, 31, XADC_REG_VAUX(15), NULL, false),
 };
 
 static const struct iio_info xadc_info = {
@@ -1047,27 +1169,38 @@ static const struct iio_info xadc_info = {
 };
 
 static const struct of_device_id xadc_of_match_table[] = {
-	{ .compatible = "xlnx,zynq-xadc-1.00.a", (void *)&xadc_zynq_ops },
-	{ .compatible = "xlnx,axi-xadc-1.00.a", (void *)&xadc_axi_ops },
+	{
+		.compatible = "xlnx,zynq-xadc-1.00.a",
+		.data = &xadc_zynq_ops
+	}, {
+		.compatible = "xlnx,axi-xadc-1.00.a",
+		.data = &xadc_7s_axi_ops
+	}, {
+		.compatible = "xlnx,system-management-wiz-1.3",
+		.data = &xadc_us_axi_ops
+	},
 	{ },
 };
 MODULE_DEVICE_TABLE(of, xadc_of_match_table);
 
-static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
-	unsigned int *conf)
+static int xadc_parse_dt(struct iio_dev *indio_dev, unsigned int *conf, int irq)
 {
+	struct device *dev = indio_dev->dev.parent;
 	struct xadc *xadc = iio_priv(indio_dev);
+	const struct iio_chan_spec *channel_templates;
 	struct iio_chan_spec *channels, *chan;
-	struct device_node *chan_node, *child;
+	struct fwnode_handle *chan_node, *child;
+	unsigned int max_channels;
 	unsigned int num_channels;
 	const char *external_mux;
 	u32 ext_mux_chan;
 	u32 reg;
 	int ret;
+	int i;
 
 	*conf = 0;
 
-	ret = of_property_read_string(np, "xlnx,external-mux", &external_mux);
+	ret = device_property_read_string(dev, "xlnx,external-mux", &external_mux);
 	if (ret < 0 || strcasecmp(external_mux, "none") == 0)
 		xadc->external_mux_mode = XADC_EXTERNAL_MUX_NONE;
 	else if (strcasecmp(external_mux, "single") == 0)
@@ -1078,8 +1211,7 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 		return -EINVAL;
 
 	if (xadc->external_mux_mode != XADC_EXTERNAL_MUX_NONE) {
-		ret = of_property_read_u32(np, "xlnx,external-mux-channel",
-					&ext_mux_chan);
+		ret = device_property_read_u32(dev, "xlnx,external-mux-channel", &ext_mux_chan);
 		if (ret < 0)
 			return ret;
 
@@ -1099,45 +1231,59 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 
 		*conf |= XADC_CONF0_MUX | XADC_CONF0_CHAN(ext_mux_chan);
 	}
-
-	channels = kmemdup(xadc_channels, sizeof(xadc_channels), GFP_KERNEL);
+	if (xadc->ops->type == XADC_TYPE_S7) {
+		channel_templates = xadc_7s_channels;
+		max_channels = ARRAY_SIZE(xadc_7s_channels);
+	} else {
+		channel_templates = xadc_us_channels;
+		max_channels = ARRAY_SIZE(xadc_us_channels);
+	}
+	channels = devm_kmemdup(dev, channel_templates,
+				sizeof(channels[0]) * max_channels, GFP_KERNEL);
 	if (!channels)
 		return -ENOMEM;
 
 	num_channels = 9;
 	chan = &channels[9];
 
-	chan_node = of_get_child_by_name(np, "xlnx,channels");
-	if (chan_node) {
-		for_each_child_of_node(chan_node, child) {
-			if (num_channels >= ARRAY_SIZE(xadc_channels)) {
-				of_node_put(child);
-				break;
-			}
+	chan_node = device_get_named_child_node(dev, "xlnx,channels");
+	fwnode_for_each_child_node(chan_node, child) {
+		if (num_channels >= max_channels) {
+			fwnode_handle_put(child);
+			break;
+		}
 
-			ret = of_property_read_u32(child, "reg", &reg);
-			if (ret || reg > 16)
-				continue;
+		ret = fwnode_property_read_u32(child, "reg", &reg);
+		if (ret || reg > 16)
+			continue;
 
-			if (of_property_read_bool(child, "xlnx,bipolar"))
-				chan->scan_type.sign = 's';
+		if (fwnode_property_read_bool(child, "xlnx,bipolar"))
+			chan->scan_type.sign = 's';
 
-			if (reg == 0) {
-				chan->scan_index = 11;
-				chan->address = XADC_REG_VPVN;
-			} else {
-				chan->scan_index = 15 + reg;
-				chan->address = XADC_REG_VAUX(reg - 1);
-			}
-			num_channels++;
-			chan++;
+		if (reg == 0) {
+			chan->scan_index = 11;
+			chan->address = XADC_REG_VPVN;
+		} else {
+			chan->scan_index = 15 + reg;
+			chan->address = XADC_REG_VAUX(reg - 1);
+		}
+		num_channels++;
+		chan++;
+	}
+	fwnode_handle_put(chan_node);
+
+	/* No IRQ => no events */
+	if (irq <= 0) {
+		for (i = 0; i < num_channels; i++) {
+			channels[i].event_spec = NULL;
+			channels[i].num_event_specs = 0;
 		}
 	}
-	of_node_put(chan_node);
 
 	indio_dev->num_channels = num_channels;
-	indio_dev->channels = krealloc(channels, sizeof(*channels) *
-					num_channels, GFP_KERNEL);
+	indio_dev->channels = devm_krealloc(dev, channels,
+					    sizeof(*channels) * num_channels,
+					    GFP_KERNEL);
 	/* If we can't resize the channels array, just use the original */
 	if (!indio_dev->channels)
 		indio_dev->channels = channels;
@@ -1145,9 +1291,22 @@ static int xadc_parse_dt(struct iio_dev *indio_dev, struct device_node *np,
 	return 0;
 }
 
+static const char * const xadc_type_names[] = {
+	[XADC_TYPE_S7] = "xadc",
+	[XADC_TYPE_US] = "xilinx-system-monitor",
+};
+
+static void xadc_cancel_delayed_work(void *data)
+{
+	struct delayed_work *work = data;
+
+	cancel_delayed_work_sync(work);
+}
+
 static int xadc_probe(struct platform_device *pdev)
 {
-	const struct of_device_id *id;
+	struct device *dev = &pdev->dev;
+	const struct xadc_ops *ops;
 	struct iio_dev *indio_dev;
 	unsigned int bipolar_mask;
 	unsigned int conf0;
@@ -1156,24 +1315,21 @@ static int xadc_probe(struct platform_device *pdev)
 	int irq;
 	int i;
 
-	if (!pdev->dev.of_node)
-		return -ENODEV;
-
-	id = of_match_node(xadc_of_match_table, pdev->dev.of_node);
-	if (!id)
+	ops = device_get_match_data(dev);
+	if (!ops)
 		return -EINVAL;
 
-	irq = platform_get_irq(pdev, 0);
-	if (irq <= 0)
-		return -ENXIO;
+	irq = platform_get_irq_optional(pdev, 0);
+	if (irq < 0 &&
+	    (irq != -ENXIO || !(ops->flags & XADC_FLAGS_IRQ_OPTIONAL)))
+		return irq;
 
-	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*xadc));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*xadc));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	xadc = iio_priv(indio_dev);
-	xadc->ops = id->data;
-	xadc->irq = irq;
+	xadc->ops = ops;
 	init_completion(&xadc->completion);
 	mutex_init(&xadc->mutex);
 	spin_lock_init(&xadc->lock);
@@ -1183,54 +1339,69 @@ static int xadc_probe(struct platform_device *pdev)
 	if (IS_ERR(xadc->base))
 		return PTR_ERR(xadc->base);
 
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
-	indio_dev->name = "xadc";
+	indio_dev->name = xadc_type_names[xadc->ops->type];
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &xadc_info;
 
-	ret = xadc_parse_dt(indio_dev, pdev->dev.of_node, &conf0);
+	ret = xadc_parse_dt(indio_dev, &conf0, irq);
 	if (ret)
-		goto err_device_free;
+		return ret;
 
 	if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
-		ret = iio_triggered_buffer_setup(indio_dev,
-			&iio_pollfunc_store_time, &xadc_trigger_handler,
-			&xadc_buffer_ops);
+		ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+						      &iio_pollfunc_store_time,
+						      &xadc_trigger_handler,
+						      &xadc_buffer_ops);
 		if (ret)
-			goto err_device_free;
+			return ret;
 
-		xadc->convst_trigger = xadc_alloc_trigger(indio_dev, "convst");
-		if (IS_ERR(xadc->convst_trigger)) {
-			ret = PTR_ERR(xadc->convst_trigger);
-			goto err_triggered_buffer_cleanup;
-		}
-		xadc->samplerate_trigger = xadc_alloc_trigger(indio_dev,
-			"samplerate");
-		if (IS_ERR(xadc->samplerate_trigger)) {
-			ret = PTR_ERR(xadc->samplerate_trigger);
-			goto err_free_convst_trigger;
+		if (irq > 0) {
+			xadc->convst_trigger = xadc_alloc_trigger(indio_dev, "convst");
+			if (IS_ERR(xadc->convst_trigger))
+				return PTR_ERR(xadc->convst_trigger);
+
+			xadc->samplerate_trigger = xadc_alloc_trigger(indio_dev,
+				"samplerate");
+			if (IS_ERR(xadc->samplerate_trigger))
+				return PTR_ERR(xadc->samplerate_trigger);
 		}
 	}
 
-	xadc->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(xadc->clk)) {
-		ret = PTR_ERR(xadc->clk);
-		goto err_free_samplerate_trigger;
+	xadc->clk = devm_clk_get_enabled(dev, NULL);
+	if (IS_ERR(xadc->clk))
+		return PTR_ERR(xadc->clk);
+
+	/*
+	 * Make sure not to exceed the maximum samplerate since otherwise the
+	 * resulting interrupt storm will soft-lock the system.
+	 */
+	if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
+		ret = xadc_read_samplerate(xadc);
+		if (ret < 0)
+			return ret;
+
+		if (ret > XADC_MAX_SAMPLERATE) {
+			ret = xadc_write_samplerate(xadc, XADC_MAX_SAMPLERATE);
+			if (ret < 0)
+				return ret;
+		}
 	}
 
-	ret = clk_prepare_enable(xadc->clk);
-	if (ret)
-		goto err_free_samplerate_trigger;
+	if (irq > 0) {
+		ret = devm_request_irq(dev, irq, xadc->ops->interrupt_handler,
+				       0, dev_name(dev), indio_dev);
+		if (ret)
+			return ret;
 
-	ret = request_irq(xadc->irq, xadc->ops->interrupt_handler, 0,
-			dev_name(&pdev->dev), indio_dev);
-	if (ret)
-		goto err_clk_disable_unprepare;
+		ret = devm_add_action_or_reset(dev, xadc_cancel_delayed_work,
+					       &xadc->zynq_unmask_work);
+		if (ret)
+			return ret;
+	}
 
-	ret = xadc->ops->setup(pdev, indio_dev, xadc->irq);
+	ret = xadc->ops->setup(pdev, indio_dev, irq);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	for (i = 0; i < 16; i++)
 		xadc_read_adc_reg(xadc, XADC_REG_THRESHOLD(i),
@@ -1238,7 +1409,7 @@ static int xadc_probe(struct platform_device *pdev)
 
 	ret = xadc_write_adc_reg(xadc, XADC_REG_CONF0, conf0);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	bipolar_mask = 0;
 	for (i = 0; i < indio_dev->num_channels; i++) {
@@ -1248,17 +1419,18 @@ static int xadc_probe(struct platform_device *pdev)
 
 	ret = xadc_write_adc_reg(xadc, XADC_REG_INPUT_MODE(0), bipolar_mask);
 	if (ret)
-		goto err_free_irq;
+		return ret;
+
 	ret = xadc_write_adc_reg(xadc, XADC_REG_INPUT_MODE(1),
 		bipolar_mask >> 16);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	/* Disable all alarms */
 	ret = xadc_update_adc_reg(xadc, XADC_REG_CONF1, XADC_CONF1_ALARM_MASK,
 				  XADC_CONF1_ALARM_MASK);
 	if (ret)
-		goto err_free_irq;
+		return ret;
 
 	/* Set thresholds to min/max */
 	for (i = 0; i < 16; i++) {
@@ -1273,63 +1445,17 @@ static int xadc_probe(struct platform_device *pdev)
 		ret = xadc_write_adc_reg(xadc, XADC_REG_THRESHOLD(i),
 			xadc->threshold[i]);
 		if (ret)
-			goto err_free_irq;
+			return ret;
 	}
 
 	/* Go to non-buffered mode */
 	xadc_postdisable(indio_dev);
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto err_free_irq;
-
-	platform_set_drvdata(pdev, indio_dev);
-
-	return 0;
-
-err_free_irq:
-	free_irq(xadc->irq, indio_dev);
-	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
-err_clk_disable_unprepare:
-	clk_disable_unprepare(xadc->clk);
-err_free_samplerate_trigger:
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
-		iio_trigger_free(xadc->samplerate_trigger);
-err_free_convst_trigger:
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
-		iio_trigger_free(xadc->convst_trigger);
-err_triggered_buffer_cleanup:
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED)
-		iio_triggered_buffer_cleanup(indio_dev);
-err_device_free:
-	kfree(indio_dev->channels);
-
-	return ret;
-}
-
-static int xadc_remove(struct platform_device *pdev)
-{
-	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
-	struct xadc *xadc = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (xadc->ops->flags & XADC_FLAGS_BUFFERED) {
-		iio_trigger_free(xadc->samplerate_trigger);
-		iio_trigger_free(xadc->convst_trigger);
-		iio_triggered_buffer_cleanup(indio_dev);
-	}
-	free_irq(xadc->irq, indio_dev);
-	cancel_delayed_work_sync(&xadc->zynq_unmask_work);
-	clk_disable_unprepare(xadc->clk);
-	kfree(xadc->data);
-	kfree(indio_dev->channels);
-
-	return 0;
+	return devm_iio_device_register(dev, indio_dev);
 }
 
 static struct platform_driver xadc_driver = {
 	.probe = xadc_probe,
-	.remove = xadc_remove,
 	.driver = {
 		.name = "xadc",
 		.of_match_table = xadc_of_match_table,
diff --git a/drivers/iio/adc/xilinx-xadc-events.c b/drivers/iio/adc/xilinx-xadc-events.c
index dbfd5da290a4..1bd375fb10e0 100644
--- a/drivers/iio/adc/xilinx-xadc-events.c
+++ b/drivers/iio/adc/xilinx-xadc-events.c
@@ -3,7 +3,7 @@
  * Xilinx XADC driver
  *
  * Copyright 2013 Analog Devices Inc.
- *  Author: Lars-Peter Clauen <lars@metafoo.de>
+ *  Author: Lars-Peter Clausen <lars@metafoo.de>
  */
 
 #include <linux/iio/events.h>
@@ -155,9 +155,6 @@ err_out:
 	return ret;
 }
 
-/* Register value is msb aligned, the lower 4 bits are ignored */
-#define XADC_THRESHOLD_VALUE_SHIFT 4
-
 int xadc_read_event_value(struct iio_dev *indio_dev,
 	const struct iio_chan_spec *chan, enum iio_event_type type,
 	enum iio_event_direction dir, enum iio_event_info info,
@@ -177,7 +174,8 @@ int xadc_read_event_value(struct iio_dev *indio_dev,
 		return -EINVAL;
 	}
 
-	*val >>= XADC_THRESHOLD_VALUE_SHIFT;
+	/* MSB aligned */
+	*val >>= 16 - chan->scan_type.realbits;
 
 	return IIO_VAL_INT;
 }
@@ -191,7 +189,8 @@ int xadc_write_event_value(struct iio_dev *indio_dev,
 	struct xadc *xadc = iio_priv(indio_dev);
 	int ret = 0;
 
-	val <<= XADC_THRESHOLD_VALUE_SHIFT;
+	/* MSB aligned */
+	val <<= 16 - chan->scan_type.realbits;
 
 	if (val < 0 || val > 0xffff)
 		return -EINVAL;
diff --git a/drivers/iio/adc/xilinx-xadc.h b/drivers/iio/adc/xilinx-xadc.h
index 4017f18b0a4f..7d78ce698967 100644
--- a/drivers/iio/adc/xilinx-xadc.h
+++ b/drivers/iio/adc/xilinx-xadc.h
@@ -3,7 +3,7 @@
  * Xilinx XADC driver
  *
  * Copyright 2013 Analog Devices Inc.
- *  Author: Lars-Peter Clauen <lars@metafoo.de>
+ *  Author: Lars-Peter Clausen <lars@metafoo.de>
  */
 
 #ifndef __IIO_XILINX_XADC__
@@ -67,7 +67,11 @@ struct xadc {
 	spinlock_t lock;
 
 	struct completion completion;
-	int irq;
+};
+
+enum xadc_type {
+	XADC_TYPE_S7, /* Series 7 */
+	XADC_TYPE_US, /* UltraScale and UltraScale+ */
 };
 
 struct xadc_ops {
@@ -80,6 +84,7 @@ struct xadc_ops {
 	irqreturn_t (*interrupt_handler)(int irq, void *devid);
 
 	unsigned int flags;
+	enum xadc_type type;
 };
 
 static inline int _xadc_read_adc_reg(struct xadc *xadc, unsigned int reg,
diff --git a/drivers/iio/addac/Kconfig b/drivers/iio/addac/Kconfig
new file mode 100644
index 000000000000..fcf6d2269bfc
--- /dev/null
+++ b/drivers/iio/addac/Kconfig
@@ -0,0 +1,36 @@
+#
+# ADC DAC drivers
+#
+# When adding new entries keep the list in alphabetical order
+
+menu "Analog to digital and digital to analog converters"
+
+config AD74413R
+	tristate "Analog Devices AD74412R/AD74413R driver"
+	depends on GPIOLIB && SPI
+	select REGMAP_SPI
+	select CRC8
+	help
+	  Say yes here to build support for Analog Devices AD74412R/AD74413R
+	  quad-channel software configurable input/output solution.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad74413r.
+
+config STX104
+	tristate "Apex Embedded Systems STX104 driver"
+	depends on PC104 && X86
+	select ISA_BUS_API
+	select GPIOLIB
+	help
+	  Say yes here to build support for the Apex Embedded Systems STX104
+	  integrated analog PC/104 card.
+
+	  This driver supports the 16 channels of single-ended (8 channels of
+	  differential) analog inputs, 2 channels of analog output, 4 digital
+	  inputs, and 4 digital outputs provided by the STX104.
+
+	  The base port addresses for the devices may be configured via the base
+	  array module parameter.
+
+endmenu
diff --git a/drivers/iio/addac/Makefile b/drivers/iio/addac/Makefile
new file mode 100644
index 000000000000..17de20ef0d8e
--- /dev/null
+++ b/drivers/iio/addac/Makefile
@@ -0,0 +1,8 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for industrial I/O ADDAC drivers
+#
+
+# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_AD74413R) += ad74413r.o
+obj-$(CONFIG_STX104) += stx104.o
diff --git a/drivers/iio/addac/ad74413r.c b/drivers/iio/addac/ad74413r.c
new file mode 100644
index 000000000000..899bcd83f40b
--- /dev/null
+++ b/drivers/iio/addac/ad74413r.c
@@ -0,0 +1,1474 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2021 Analog Devices, Inc.
+ * Author: Cosmin Tanislav <cosmin.tanislav@analog.com>
+ */
+
+#include <asm/unaligned.h>
+#include <linux/bitfield.h>
+#include <linux/crc8.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/driver.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/interrupt.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <dt-bindings/iio/addac/adi,ad74413r.h>
+
+#define AD74413R_CRC_POLYNOMIAL	0x7
+DECLARE_CRC8_TABLE(ad74413r_crc8_table);
+
+#define AD74413R_CHANNEL_MAX	4
+
+#define AD74413R_FRAME_SIZE	4
+
+struct ad74413r_chip_info {
+	const char	*name;
+	bool		hart_support;
+};
+
+struct ad74413r_channel_config {
+	u32		func;
+	bool		gpo_comparator;
+	bool		initialized;
+};
+
+struct ad74413r_channels {
+	struct iio_chan_spec	*channels;
+	unsigned int		num_channels;
+};
+
+struct ad74413r_state {
+	struct ad74413r_channel_config	channel_configs[AD74413R_CHANNEL_MAX];
+	unsigned int			gpo_gpio_offsets[AD74413R_CHANNEL_MAX];
+	unsigned int			comp_gpio_offsets[AD74413R_CHANNEL_MAX];
+	struct gpio_chip		gpo_gpiochip;
+	struct gpio_chip		comp_gpiochip;
+	struct completion		adc_data_completion;
+	unsigned int			num_gpo_gpios;
+	unsigned int			num_comparator_gpios;
+	u32				sense_resistor_ohms;
+
+	/*
+	 * Synchronize consecutive operations when doing a one-shot
+	 * conversion and when updating the ADC samples SPI message.
+	 */
+	struct mutex			lock;
+
+	const struct ad74413r_chip_info	*chip_info;
+	struct spi_device		*spi;
+	struct regulator		*refin_reg;
+	struct regmap			*regmap;
+	struct device			*dev;
+	struct iio_trigger		*trig;
+
+	size_t			adc_active_channels;
+	struct spi_message	adc_samples_msg;
+	struct spi_transfer	adc_samples_xfer[AD74413R_CHANNEL_MAX + 1];
+
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	struct {
+		u8 rx_buf[AD74413R_FRAME_SIZE * AD74413R_CHANNEL_MAX];
+		s64 timestamp;
+	} adc_samples_buf __aligned(IIO_DMA_MINALIGN);
+
+	u8	adc_samples_tx_buf[AD74413R_FRAME_SIZE * AD74413R_CHANNEL_MAX];
+	u8	reg_tx_buf[AD74413R_FRAME_SIZE];
+	u8	reg_rx_buf[AD74413R_FRAME_SIZE];
+};
+
+#define AD74413R_REG_NOP		0x00
+
+#define AD74413R_REG_CH_FUNC_SETUP_X(x)	(0x01 + (x))
+#define AD74413R_CH_FUNC_SETUP_MASK	GENMASK(3, 0)
+
+#define AD74413R_REG_ADC_CONFIG_X(x)		(0x05 + (x))
+#define AD74413R_ADC_CONFIG_RANGE_MASK		GENMASK(7, 5)
+#define AD74413R_ADC_CONFIG_REJECTION_MASK	GENMASK(4, 3)
+#define AD74413R_ADC_RANGE_10V			0b000
+#define AD74413R_ADC_RANGE_2P5V_EXT_POW		0b001
+#define AD74413R_ADC_RANGE_2P5V_INT_POW		0b010
+#define AD74413R_ADC_RANGE_5V_BI_DIR		0b011
+#define AD74413R_ADC_REJECTION_50_60		0b00
+#define AD74413R_ADC_REJECTION_NONE		0b01
+#define AD74413R_ADC_REJECTION_50_60_HART	0b10
+#define AD74413R_ADC_REJECTION_HART		0b11
+
+#define AD74413R_REG_DIN_CONFIG_X(x)	(0x09 + (x))
+#define AD74413R_DIN_DEBOUNCE_MASK	GENMASK(4, 0)
+#define AD74413R_DIN_DEBOUNCE_LEN	BIT(5)
+
+#define AD74413R_REG_DAC_CODE_X(x)	(0x16 + (x))
+#define AD74413R_DAC_CODE_MAX		GENMASK(12, 0)
+#define AD74413R_DAC_VOLTAGE_MAX	11000
+
+#define AD74413R_REG_GPO_PAR_DATA		0x0d
+#define AD74413R_REG_GPO_CONFIG_X(x)		(0x0e + (x))
+#define AD74413R_GPO_CONFIG_DATA_MASK	BIT(3)
+#define AD74413R_GPO_CONFIG_SELECT_MASK		GENMASK(2, 0)
+#define AD74413R_GPO_CONFIG_100K_PULL_DOWN	0b000
+#define AD74413R_GPO_CONFIG_LOGIC		0b001
+#define AD74413R_GPO_CONFIG_LOGIC_PARALLEL	0b010
+#define AD74413R_GPO_CONFIG_COMPARATOR		0b011
+#define AD74413R_GPO_CONFIG_HIGH_IMPEDANCE	0b100
+
+#define AD74413R_REG_ADC_CONV_CTRL	0x23
+#define AD74413R_CONV_SEQ_MASK		GENMASK(9, 8)
+#define AD74413R_CONV_SEQ_ON		0b00
+#define AD74413R_CONV_SEQ_SINGLE	0b01
+#define AD74413R_CONV_SEQ_CONTINUOUS	0b10
+#define AD74413R_CONV_SEQ_OFF		0b11
+#define AD74413R_CH_EN_MASK(x)		BIT(x)
+
+#define AD74413R_REG_DIN_COMP_OUT		0x25
+
+#define AD74413R_REG_ADC_RESULT_X(x)	(0x26 + (x))
+#define AD74413R_ADC_RESULT_MAX		GENMASK(15, 0)
+
+#define AD74413R_REG_READ_SELECT	0x41
+
+#define AD74413R_REG_CMD_KEY		0x44
+#define AD74413R_CMD_KEY_LDAC		0x953a
+#define AD74413R_CMD_KEY_RESET1		0x15fa
+#define AD74413R_CMD_KEY_RESET2		0xaf51
+
+static const int ad74413r_adc_sampling_rates[] = {
+	20, 4800,
+};
+
+static const int ad74413r_adc_sampling_rates_hart[] = {
+	10, 20, 1200, 4800,
+};
+
+static int ad74413r_crc(u8 *buf)
+{
+	return crc8(ad74413r_crc8_table, buf, 3, 0);
+}
+
+static void ad74413r_format_reg_write(u8 reg, u16 val, u8 *buf)
+{
+	buf[0] = reg;
+	put_unaligned_be16(val, &buf[1]);
+	buf[3] = ad74413r_crc(buf);
+}
+
+static int ad74413r_reg_write(void *context, unsigned int reg, unsigned int val)
+{
+	struct ad74413r_state *st = context;
+
+	ad74413r_format_reg_write(reg, val, st->reg_tx_buf);
+
+	return spi_write(st->spi, st->reg_tx_buf, AD74413R_FRAME_SIZE);
+}
+
+static int ad74413r_crc_check(struct ad74413r_state *st, u8 *buf)
+{
+	u8 expected_crc = ad74413r_crc(buf);
+
+	if (buf[3] != expected_crc) {
+		dev_err(st->dev, "Bad CRC %02x for %02x%02x%02x\n",
+			buf[3], buf[0], buf[1], buf[2]);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ad74413r_reg_read(void *context, unsigned int reg, unsigned int *val)
+{
+	struct ad74413r_state *st = context;
+	struct spi_transfer reg_read_xfer[] = {
+		{
+			.tx_buf = st->reg_tx_buf,
+			.len = AD74413R_FRAME_SIZE,
+			.cs_change = 1,
+		},
+		{
+			.rx_buf = st->reg_rx_buf,
+			.len = AD74413R_FRAME_SIZE,
+		},
+	};
+	int ret;
+
+	ad74413r_format_reg_write(AD74413R_REG_READ_SELECT, reg,
+				  st->reg_tx_buf);
+
+	ret = spi_sync_transfer(st->spi, reg_read_xfer,
+				ARRAY_SIZE(reg_read_xfer));
+	if (ret)
+		return ret;
+
+	ret = ad74413r_crc_check(st, st->reg_rx_buf);
+	if (ret)
+		return ret;
+
+	*val = get_unaligned_be16(&st->reg_rx_buf[1]);
+
+	return 0;
+}
+
+static const struct regmap_config ad74413r_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.reg_read = ad74413r_reg_read,
+	.reg_write = ad74413r_reg_write,
+};
+
+static int ad74413r_set_gpo_config(struct ad74413r_state *st,
+				   unsigned int offset, u8 mode)
+{
+	return regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(offset),
+				  AD74413R_GPO_CONFIG_SELECT_MASK, mode);
+}
+
+static const unsigned int ad74413r_debounce_map[AD74413R_DIN_DEBOUNCE_LEN] = {
+	0,     13,    18,    24,    32,    42,    56,    75,
+	100,   130,   180,   240,   320,   420,   560,   750,
+	1000,  1300,  1800,  2400,  3200,  4200,  5600,  7500,
+	10000, 13000, 18000, 24000, 32000, 42000, 56000, 75000,
+};
+
+static int ad74413r_set_comp_debounce(struct ad74413r_state *st,
+				      unsigned int offset,
+				      unsigned int debounce)
+{
+	unsigned int val = AD74413R_DIN_DEBOUNCE_LEN - 1;
+	unsigned int i;
+
+	for (i = 0; i < AD74413R_DIN_DEBOUNCE_LEN; i++)
+		if (debounce <= ad74413r_debounce_map[i]) {
+			val = i;
+			break;
+		}
+
+	return regmap_update_bits(st->regmap,
+				  AD74413R_REG_DIN_CONFIG_X(offset),
+				  AD74413R_DIN_DEBOUNCE_MASK,
+				  val);
+}
+
+static void ad74413r_gpio_set(struct gpio_chip *chip,
+			      unsigned int offset, int val)
+{
+	struct ad74413r_state *st = gpiochip_get_data(chip);
+	unsigned int real_offset = st->gpo_gpio_offsets[offset];
+	int ret;
+
+	ret = ad74413r_set_gpo_config(st, real_offset,
+				      AD74413R_GPO_CONFIG_LOGIC);
+	if (ret)
+		return;
+
+	regmap_update_bits(st->regmap, AD74413R_REG_GPO_CONFIG_X(real_offset),
+			   AD74413R_GPO_CONFIG_DATA_MASK,
+			   val ? AD74413R_GPO_CONFIG_DATA_MASK : 0);
+}
+
+static void ad74413r_gpio_set_multiple(struct gpio_chip *chip,
+				       unsigned long *mask,
+				       unsigned long *bits)
+{
+	struct ad74413r_state *st = gpiochip_get_data(chip);
+	unsigned long real_mask = 0;
+	unsigned long real_bits = 0;
+	unsigned int offset;
+	int ret;
+
+	for_each_set_bit(offset, mask, chip->ngpio) {
+		unsigned int real_offset = st->gpo_gpio_offsets[offset];
+
+		ret = ad74413r_set_gpo_config(st, real_offset,
+			AD74413R_GPO_CONFIG_LOGIC_PARALLEL);
+		if (ret)
+			return;
+
+		real_mask |= BIT(real_offset);
+		if (*bits & offset)
+			real_bits |= BIT(real_offset);
+	}
+
+	regmap_update_bits(st->regmap, AD74413R_REG_GPO_PAR_DATA,
+			   real_mask, real_bits);
+}
+
+static int ad74413r_gpio_get(struct gpio_chip *chip, unsigned int offset)
+{
+	struct ad74413r_state *st = gpiochip_get_data(chip);
+	unsigned int real_offset = st->comp_gpio_offsets[offset];
+	unsigned int status;
+	int ret;
+
+	ret = regmap_read(st->regmap, AD74413R_REG_DIN_COMP_OUT, &status);
+	if (ret)
+		return ret;
+
+	status &= BIT(real_offset);
+
+	return status ? 1 : 0;
+}
+
+static int ad74413r_gpio_get_multiple(struct gpio_chip *chip,
+				      unsigned long *mask,
+				      unsigned long *bits)
+{
+	struct ad74413r_state *st = gpiochip_get_data(chip);
+	unsigned int offset;
+	unsigned int val;
+	int ret;
+
+	ret = regmap_read(st->regmap, AD74413R_REG_DIN_COMP_OUT, &val);
+	if (ret)
+		return ret;
+
+	for_each_set_bit(offset, mask, chip->ngpio) {
+		unsigned int real_offset = st->comp_gpio_offsets[offset];
+
+		__assign_bit(offset, bits, val & BIT(real_offset));
+	}
+
+	return ret;
+}
+
+static int ad74413r_gpio_get_gpo_direction(struct gpio_chip *chip,
+					   unsigned int offset)
+{
+	return GPIO_LINE_DIRECTION_OUT;
+}
+
+static int ad74413r_gpio_get_comp_direction(struct gpio_chip *chip,
+					    unsigned int offset)
+{
+	return GPIO_LINE_DIRECTION_IN;
+}
+
+static int ad74413r_gpio_set_gpo_config(struct gpio_chip *chip,
+					unsigned int offset,
+					unsigned long config)
+{
+	struct ad74413r_state *st = gpiochip_get_data(chip);
+	unsigned int real_offset = st->gpo_gpio_offsets[offset];
+
+	switch (pinconf_to_config_param(config)) {
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		return ad74413r_set_gpo_config(st, real_offset,
+			AD74413R_GPO_CONFIG_100K_PULL_DOWN);
+	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+		return ad74413r_set_gpo_config(st, real_offset,
+			AD74413R_GPO_CONFIG_HIGH_IMPEDANCE);
+	default:
+		return -ENOTSUPP;
+	}
+}
+
+static int ad74413r_gpio_set_comp_config(struct gpio_chip *chip,
+					 unsigned int offset,
+					 unsigned long config)
+{
+	struct ad74413r_state *st = gpiochip_get_data(chip);
+	unsigned int real_offset = st->comp_gpio_offsets[offset];
+
+	switch (pinconf_to_config_param(config)) {
+	case PIN_CONFIG_INPUT_DEBOUNCE:
+		return ad74413r_set_comp_debounce(st, real_offset,
+			pinconf_to_config_argument(config));
+	default:
+		return -ENOTSUPP;
+	}
+}
+
+static int ad74413r_reset(struct ad74413r_state *st)
+{
+	int ret;
+
+	ret = regmap_write(st->regmap, AD74413R_REG_CMD_KEY,
+			   AD74413R_CMD_KEY_RESET1);
+	if (ret)
+		return ret;
+
+	return regmap_write(st->regmap, AD74413R_REG_CMD_KEY,
+			    AD74413R_CMD_KEY_RESET2);
+}
+
+static int ad74413r_set_channel_dac_code(struct ad74413r_state *st,
+					 unsigned int channel, int dac_code)
+{
+	struct reg_sequence reg_seq[2] = {
+		{ AD74413R_REG_DAC_CODE_X(channel), dac_code },
+		{ AD74413R_REG_CMD_KEY, AD74413R_CMD_KEY_LDAC },
+	};
+
+	return regmap_multi_reg_write(st->regmap, reg_seq, 2);
+}
+
+static int ad74413r_set_channel_function(struct ad74413r_state *st,
+					 unsigned int channel, u8 func)
+{
+	return regmap_update_bits(st->regmap,
+				  AD74413R_REG_CH_FUNC_SETUP_X(channel),
+				  AD74413R_CH_FUNC_SETUP_MASK, func);
+}
+
+static int ad74413r_set_adc_conv_seq(struct ad74413r_state *st,
+				     unsigned int status)
+{
+	int ret;
+
+	/*
+	 * These bits do not clear when a conversion completes.
+	 * To enable a subsequent conversion, repeat the write.
+	 */
+	ret = regmap_write_bits(st->regmap, AD74413R_REG_ADC_CONV_CTRL,
+				AD74413R_CONV_SEQ_MASK,
+				FIELD_PREP(AD74413R_CONV_SEQ_MASK, status));
+	if (ret)
+		return ret;
+
+	/*
+	 * Wait 100us before starting conversions.
+	 */
+	usleep_range(100, 120);
+
+	return 0;
+}
+
+static int ad74413r_set_adc_channel_enable(struct ad74413r_state *st,
+					   unsigned int channel,
+					   bool status)
+{
+	return regmap_update_bits(st->regmap, AD74413R_REG_ADC_CONV_CTRL,
+				  AD74413R_CH_EN_MASK(channel),
+				  status ? AD74413R_CH_EN_MASK(channel) : 0);
+}
+
+static int ad74413r_get_adc_range(struct ad74413r_state *st,
+				  unsigned int channel,
+				  unsigned int *val)
+{
+	int ret;
+
+	ret = regmap_read(st->regmap, AD74413R_REG_ADC_CONFIG_X(channel), val);
+	if (ret)
+		return ret;
+
+	*val = FIELD_GET(AD74413R_ADC_CONFIG_RANGE_MASK, *val);
+
+	return 0;
+}
+
+static int ad74413r_get_adc_rejection(struct ad74413r_state *st,
+				      unsigned int channel,
+				      unsigned int *val)
+{
+	int ret;
+
+	ret = regmap_read(st->regmap, AD74413R_REG_ADC_CONFIG_X(channel), val);
+	if (ret)
+		return ret;
+
+	*val = FIELD_GET(AD74413R_ADC_CONFIG_REJECTION_MASK, *val);
+
+	return 0;
+}
+
+static int ad74413r_set_adc_rejection(struct ad74413r_state *st,
+				      unsigned int channel,
+				      unsigned int val)
+{
+	return regmap_update_bits(st->regmap,
+				  AD74413R_REG_ADC_CONFIG_X(channel),
+				  AD74413R_ADC_CONFIG_REJECTION_MASK,
+				  FIELD_PREP(AD74413R_ADC_CONFIG_REJECTION_MASK,
+					     val));
+}
+
+static int ad74413r_rejection_to_rate(struct ad74413r_state *st,
+				      unsigned int rej, int *val)
+{
+	switch (rej) {
+	case AD74413R_ADC_REJECTION_50_60:
+		*val = 20;
+		return 0;
+	case AD74413R_ADC_REJECTION_NONE:
+		*val = 4800;
+		return 0;
+	case AD74413R_ADC_REJECTION_50_60_HART:
+		*val = 10;
+		return 0;
+	case AD74413R_ADC_REJECTION_HART:
+		*val = 1200;
+		return 0;
+	default:
+		dev_err(st->dev, "ADC rejection invalid\n");
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_rate_to_rejection(struct ad74413r_state *st,
+				      int rate, unsigned int *val)
+{
+	switch (rate) {
+	case 20:
+		*val = AD74413R_ADC_REJECTION_50_60;
+		return 0;
+	case 4800:
+		*val = AD74413R_ADC_REJECTION_NONE;
+		return 0;
+	case 10:
+		*val = AD74413R_ADC_REJECTION_50_60_HART;
+		return 0;
+	case 1200:
+		*val = AD74413R_ADC_REJECTION_HART;
+		return 0;
+	default:
+		dev_err(st->dev, "ADC rate invalid\n");
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_range_to_voltage_range(struct ad74413r_state *st,
+					   unsigned int range, int *val)
+{
+	switch (range) {
+	case AD74413R_ADC_RANGE_10V:
+		*val = 10000;
+		return 0;
+	case AD74413R_ADC_RANGE_2P5V_EXT_POW:
+	case AD74413R_ADC_RANGE_2P5V_INT_POW:
+		*val = 2500;
+		return 0;
+	case AD74413R_ADC_RANGE_5V_BI_DIR:
+		*val = 5000;
+		return 0;
+	default:
+		dev_err(st->dev, "ADC range invalid\n");
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_range_to_voltage_offset(struct ad74413r_state *st,
+					    unsigned int range, int *val)
+{
+	switch (range) {
+	case AD74413R_ADC_RANGE_10V:
+	case AD74413R_ADC_RANGE_2P5V_EXT_POW:
+		*val = 0;
+		return 0;
+	case AD74413R_ADC_RANGE_2P5V_INT_POW:
+	case AD74413R_ADC_RANGE_5V_BI_DIR:
+		*val = -2500;
+		return 0;
+	default:
+		dev_err(st->dev, "ADC range invalid\n");
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_range_to_voltage_offset_raw(struct ad74413r_state *st,
+						unsigned int range, int *val)
+{
+	switch (range) {
+	case AD74413R_ADC_RANGE_10V:
+	case AD74413R_ADC_RANGE_2P5V_EXT_POW:
+		*val = 0;
+		return 0;
+	case AD74413R_ADC_RANGE_2P5V_INT_POW:
+		*val = -((int)AD74413R_ADC_RESULT_MAX);
+		return 0;
+	case AD74413R_ADC_RANGE_5V_BI_DIR:
+		*val = -((int)AD74413R_ADC_RESULT_MAX / 2);
+		return 0;
+	default:
+		dev_err(st->dev, "ADC range invalid\n");
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_get_output_voltage_scale(struct ad74413r_state *st,
+					     int *val, int *val2)
+{
+	*val = AD74413R_DAC_VOLTAGE_MAX;
+	*val2 = AD74413R_DAC_CODE_MAX;
+
+	return IIO_VAL_FRACTIONAL;
+}
+
+static int ad74413r_get_output_current_scale(struct ad74413r_state *st,
+					     int *val, int *val2)
+{
+	*val = regulator_get_voltage(st->refin_reg);
+	*val2 = st->sense_resistor_ohms * AD74413R_DAC_CODE_MAX * 1000;
+
+	return IIO_VAL_FRACTIONAL;
+}
+
+static int ad74413r_get_input_voltage_scale(struct ad74413r_state *st,
+					    unsigned int channel,
+					    int *val, int *val2)
+{
+	unsigned int range;
+	int ret;
+
+	ret = ad74413r_get_adc_range(st, channel, &range);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_range_to_voltage_range(st, range, val);
+	if (ret)
+		return ret;
+
+	*val2 = AD74413R_ADC_RESULT_MAX;
+
+	return IIO_VAL_FRACTIONAL;
+}
+
+static int ad74413r_get_input_voltage_offset(struct ad74413r_state *st,
+					     unsigned int channel, int *val)
+{
+	unsigned int range;
+	int ret;
+
+	ret = ad74413r_get_adc_range(st, channel, &range);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_range_to_voltage_offset_raw(st, range, val);
+	if (ret)
+		return ret;
+
+	return IIO_VAL_INT;
+}
+
+static int ad74413r_get_input_current_scale(struct ad74413r_state *st,
+					    unsigned int channel, int *val,
+					    int *val2)
+{
+	unsigned int range;
+	int ret;
+
+	ret = ad74413r_get_adc_range(st, channel, &range);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_range_to_voltage_range(st, range, val);
+	if (ret)
+		return ret;
+
+	*val2 = AD74413R_ADC_RESULT_MAX * st->sense_resistor_ohms;
+
+	return IIO_VAL_FRACTIONAL;
+}
+
+static int ad74413_get_input_current_offset(struct ad74413r_state *st,
+					    unsigned int channel, int *val)
+{
+	unsigned int range;
+	int voltage_range;
+	int voltage_offset;
+	int ret;
+
+	ret = ad74413r_get_adc_range(st, channel, &range);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_range_to_voltage_range(st, range, &voltage_range);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_range_to_voltage_offset(st, range, &voltage_offset);
+	if (ret)
+		return ret;
+
+	*val = voltage_offset * AD74413R_ADC_RESULT_MAX / voltage_range;
+
+	return IIO_VAL_INT;
+}
+
+static int ad74413r_get_adc_rate(struct ad74413r_state *st,
+				 unsigned int channel, int *val)
+{
+	unsigned int rejection;
+	int ret;
+
+	ret = ad74413r_get_adc_rejection(st, channel, &rejection);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_rejection_to_rate(st, rejection, val);
+	if (ret)
+		return ret;
+
+	return IIO_VAL_INT;
+}
+
+static int ad74413r_set_adc_rate(struct ad74413r_state *st,
+				 unsigned int channel, int val)
+{
+	unsigned int rejection;
+	int ret;
+
+	ret = ad74413r_rate_to_rejection(st, val, &rejection);
+	if (ret)
+		return ret;
+
+	return ad74413r_set_adc_rejection(st, channel, rejection);
+}
+
+static irqreturn_t ad74413r_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct ad74413r_state *st = iio_priv(indio_dev);
+	u8 *rx_buf = st->adc_samples_buf.rx_buf;
+	unsigned int i;
+	int ret;
+
+	ret = spi_sync(st->spi, &st->adc_samples_msg);
+	if (ret)
+		goto out;
+
+	for (i = 0; i < st->adc_active_channels; i++)
+		ad74413r_crc_check(st, &rx_buf[i * AD74413R_FRAME_SIZE]);
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &st->adc_samples_buf,
+					   iio_get_time_ns(indio_dev));
+
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t ad74413r_adc_data_interrupt(int irq, void *data)
+{
+	struct iio_dev *indio_dev = data;
+	struct ad74413r_state *st = iio_priv(indio_dev);
+
+	if (iio_buffer_enabled(indio_dev))
+		iio_trigger_poll(st->trig);
+	else
+		complete(&st->adc_data_completion);
+
+	return IRQ_HANDLED;
+}
+
+static int _ad74413r_get_single_adc_result(struct ad74413r_state *st,
+					   unsigned int channel, int *val)
+{
+	unsigned int uval;
+	int ret;
+
+	reinit_completion(&st->adc_data_completion);
+
+	ret = ad74413r_set_adc_channel_enable(st, channel, true);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_SINGLE);
+	if (ret)
+		return ret;
+
+	ret = wait_for_completion_timeout(&st->adc_data_completion,
+					  msecs_to_jiffies(1000));
+	if (!ret) {
+		ret = -ETIMEDOUT;
+		return ret;
+	}
+
+	ret = regmap_read(st->regmap, AD74413R_REG_ADC_RESULT_X(channel),
+			  &uval);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_OFF);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_set_adc_channel_enable(st, channel, false);
+	if (ret)
+		return ret;
+
+	*val = uval;
+
+	return IIO_VAL_INT;
+}
+
+static int ad74413r_get_single_adc_result(struct iio_dev *indio_dev,
+					  unsigned int channel, int *val)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+	ret = _ad74413r_get_single_adc_result(st, channel, val);
+	mutex_unlock(&st->lock);
+
+	iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static void ad74413r_adc_to_resistance_result(int adc_result, int *val)
+{
+	if (adc_result == AD74413R_ADC_RESULT_MAX)
+		adc_result = AD74413R_ADC_RESULT_MAX - 1;
+
+	*val = DIV_ROUND_CLOSEST(adc_result * 2100,
+				 AD74413R_ADC_RESULT_MAX - adc_result);
+}
+
+static int ad74413r_update_scan_mode(struct iio_dev *indio_dev,
+				     const unsigned long *active_scan_mask)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+	struct spi_transfer *xfer = st->adc_samples_xfer;
+	u8 *rx_buf = st->adc_samples_buf.rx_buf;
+	u8 *tx_buf = st->adc_samples_tx_buf;
+	unsigned int channel;
+	int ret = -EINVAL;
+
+	mutex_lock(&st->lock);
+
+	spi_message_init(&st->adc_samples_msg);
+	st->adc_active_channels = 0;
+
+	for_each_clear_bit(channel, active_scan_mask, AD74413R_CHANNEL_MAX) {
+		ret = ad74413r_set_adc_channel_enable(st, channel, false);
+		if (ret)
+			goto out;
+	}
+
+	if (*active_scan_mask == 0)
+		goto out;
+
+	/*
+	 * The read select register is used to select which register's value
+	 * will be sent by the slave on the next SPI frame.
+	 *
+	 * Create an SPI message that, on each step, writes to the read select
+	 * register to select the ADC result of the next enabled channel, and
+	 * reads the ADC result of the previous enabled channel.
+	 *
+	 * Example:
+	 * W: [WCH1] [WCH2] [WCH2] [WCH3] [    ]
+	 * R: [    ] [RCH1] [RCH2] [RCH3] [RCH4]
+	 */
+
+	for_each_set_bit(channel, active_scan_mask, AD74413R_CHANNEL_MAX) {
+		ret = ad74413r_set_adc_channel_enable(st, channel, true);
+		if (ret)
+			goto out;
+
+		st->adc_active_channels++;
+
+		if (xfer == st->adc_samples_xfer)
+			xfer->rx_buf = NULL;
+		else
+			xfer->rx_buf = rx_buf;
+
+		xfer->tx_buf = tx_buf;
+		xfer->len = AD74413R_FRAME_SIZE;
+		xfer->cs_change = 1;
+
+		ad74413r_format_reg_write(AD74413R_REG_READ_SELECT,
+					  AD74413R_REG_ADC_RESULT_X(channel),
+					  tx_buf);
+
+		spi_message_add_tail(xfer, &st->adc_samples_msg);
+
+		tx_buf += AD74413R_FRAME_SIZE;
+		if (xfer != st->adc_samples_xfer)
+			rx_buf += AD74413R_FRAME_SIZE;
+		xfer++;
+	}
+
+	xfer->rx_buf = rx_buf;
+	xfer->tx_buf = NULL;
+	xfer->len = AD74413R_FRAME_SIZE;
+	xfer->cs_change = 0;
+
+	spi_message_add_tail(xfer, &st->adc_samples_msg);
+
+out:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad74413r_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+
+	return ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_CONTINUOUS);
+}
+
+static int ad74413r_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+
+	return ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_OFF);
+}
+
+static int ad74413r_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long info)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (chan->output)
+				return ad74413r_get_output_voltage_scale(st,
+					val, val2);
+			else
+				return ad74413r_get_input_voltage_scale(st,
+					chan->channel, val, val2);
+		case IIO_CURRENT:
+			if (chan->output)
+				return ad74413r_get_output_current_scale(st,
+					val, val2);
+			else
+				return ad74413r_get_input_current_scale(st,
+					chan->channel, val, val2);
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			return ad74413r_get_input_voltage_offset(st,
+				chan->channel, val);
+		case IIO_CURRENT:
+			return ad74413_get_input_current_offset(st,
+				chan->channel, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_RAW:
+		if (chan->output)
+			return -EINVAL;
+
+		return ad74413r_get_single_adc_result(indio_dev, chan->channel,
+						      val);
+	case IIO_CHAN_INFO_PROCESSED: {
+		int ret;
+
+		ret = ad74413r_get_single_adc_result(indio_dev, chan->channel,
+						     val);
+		if (ret)
+			return ret;
+
+		ad74413r_adc_to_resistance_result(*val, val);
+
+		return ret;
+	}
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return ad74413r_get_adc_rate(st, chan->channel, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long info)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		if (!chan->output)
+			return -EINVAL;
+
+		if (val < 0 || val > AD74413R_DAC_CODE_MAX) {
+			dev_err(st->dev, "Invalid DAC code\n");
+			return -EINVAL;
+		}
+
+		return ad74413r_set_channel_dac_code(st, chan->channel, val);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return ad74413r_set_adc_rate(st, chan->channel, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad74413r_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long info)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (st->chip_info->hart_support) {
+			*vals = ad74413r_adc_sampling_rates_hart;
+			*length = ARRAY_SIZE(ad74413r_adc_sampling_rates_hart);
+		} else {
+			*vals = ad74413r_adc_sampling_rates;
+			*length = ARRAY_SIZE(ad74413r_adc_sampling_rates);
+		}
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_buffer_setup_ops ad74413r_buffer_ops = {
+	.postenable = &ad74413r_buffer_postenable,
+	.predisable = &ad74413r_buffer_predisable,
+};
+
+static const struct iio_trigger_ops ad74413r_trigger_ops = {
+	.validate_device = iio_trigger_validate_own_device,
+};
+
+static const struct iio_info ad74413r_info = {
+	.read_raw = &ad74413r_read_raw,
+	.write_raw = &ad74413r_write_raw,
+	.read_avail = &ad74413r_read_avail,
+	.update_scan_mode = &ad74413r_update_scan_mode,
+};
+
+#define AD74413R_DAC_CHANNEL(_type, extra_mask_separate)		\
+	{								\
+		.type = (_type),					\
+		.indexed = 1,						\
+		.output = 1,						\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW)		\
+				      | (extra_mask_separate),		\
+	}
+
+#define AD74413R_ADC_CHANNEL(_type, extra_mask_separate)		\
+	{								\
+		.type = (_type),					\
+		.indexed = 1,						\
+		.output = 0,						\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW)		\
+				      | BIT(IIO_CHAN_INFO_SAMP_FREQ)	\
+				      | (extra_mask_separate),		\
+		.info_mask_separate_available =				\
+					BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
+		.scan_type = {						\
+			.sign = 'u',					\
+			.realbits = 16,					\
+			.storagebits = 32,				\
+			.shift = 8,					\
+			.endianness = IIO_BE,				\
+		},							\
+	}
+
+#define AD74413R_ADC_VOLTAGE_CHANNEL					\
+	AD74413R_ADC_CHANNEL(IIO_VOLTAGE, BIT(IIO_CHAN_INFO_SCALE)	\
+			     | BIT(IIO_CHAN_INFO_OFFSET))
+
+#define AD74413R_ADC_CURRENT_CHANNEL					\
+	AD74413R_ADC_CHANNEL(IIO_CURRENT,  BIT(IIO_CHAN_INFO_SCALE)	\
+			     | BIT(IIO_CHAN_INFO_OFFSET))
+
+static struct iio_chan_spec ad74413r_voltage_output_channels[] = {
+	AD74413R_DAC_CHANNEL(IIO_VOLTAGE, BIT(IIO_CHAN_INFO_SCALE)),
+	AD74413R_ADC_CURRENT_CHANNEL,
+};
+
+static struct iio_chan_spec ad74413r_current_output_channels[] = {
+	AD74413R_DAC_CHANNEL(IIO_CURRENT, BIT(IIO_CHAN_INFO_SCALE)),
+	AD74413R_ADC_VOLTAGE_CHANNEL,
+};
+
+static struct iio_chan_spec ad74413r_voltage_input_channels[] = {
+	AD74413R_ADC_VOLTAGE_CHANNEL,
+};
+
+static struct iio_chan_spec ad74413r_current_input_channels[] = {
+	AD74413R_ADC_CURRENT_CHANNEL,
+};
+
+static struct iio_chan_spec ad74413r_resistance_input_channels[] = {
+	AD74413R_ADC_CHANNEL(IIO_RESISTANCE, BIT(IIO_CHAN_INFO_PROCESSED)),
+};
+
+static struct iio_chan_spec ad74413r_digital_input_channels[] = {
+	AD74413R_ADC_VOLTAGE_CHANNEL,
+};
+
+#define _AD74413R_CHANNELS(_channels)			\
+	{						\
+		.channels = _channels,			\
+		.num_channels = ARRAY_SIZE(_channels),	\
+	}
+
+#define AD74413R_CHANNELS(name) \
+	_AD74413R_CHANNELS(ad74413r_ ## name ## _channels)
+
+static const struct ad74413r_channels ad74413r_channels_map[] = {
+	[CH_FUNC_HIGH_IMPEDANCE] = AD74413R_CHANNELS(voltage_input),
+	[CH_FUNC_VOLTAGE_OUTPUT] = AD74413R_CHANNELS(voltage_output),
+	[CH_FUNC_CURRENT_OUTPUT] = AD74413R_CHANNELS(current_output),
+	[CH_FUNC_VOLTAGE_INPUT] = AD74413R_CHANNELS(voltage_input),
+	[CH_FUNC_CURRENT_INPUT_EXT_POWER] = AD74413R_CHANNELS(current_input),
+	[CH_FUNC_CURRENT_INPUT_LOOP_POWER] = AD74413R_CHANNELS(current_input),
+	[CH_FUNC_RESISTANCE_INPUT] = AD74413R_CHANNELS(resistance_input),
+	[CH_FUNC_DIGITAL_INPUT_LOGIC] = AD74413R_CHANNELS(digital_input),
+	[CH_FUNC_DIGITAL_INPUT_LOOP_POWER] = AD74413R_CHANNELS(digital_input),
+	[CH_FUNC_CURRENT_INPUT_EXT_POWER_HART] = AD74413R_CHANNELS(current_input),
+	[CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART] = AD74413R_CHANNELS(current_input),
+};
+
+static int ad74413r_parse_channel_config(struct iio_dev *indio_dev,
+					 struct fwnode_handle *channel_node)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+	struct ad74413r_channel_config *config;
+	u32 index;
+	int ret;
+
+	ret = fwnode_property_read_u32(channel_node, "reg", &index);
+	if (ret) {
+		dev_err(st->dev, "Failed to read channel reg: %d\n", ret);
+		return ret;
+	}
+
+	if (index >= AD74413R_CHANNEL_MAX) {
+		dev_err(st->dev, "Channel index %u is too large\n", index);
+		return -EINVAL;
+	}
+
+	config = &st->channel_configs[index];
+	if (config->initialized) {
+		dev_err(st->dev, "Channel %u already initialized\n", index);
+		return -EINVAL;
+	}
+
+	config->func = CH_FUNC_HIGH_IMPEDANCE;
+	fwnode_property_read_u32(channel_node, "adi,ch-func", &config->func);
+
+	if (config->func < CH_FUNC_MIN || config->func > CH_FUNC_MAX) {
+		dev_err(st->dev, "Invalid channel function %u\n", config->func);
+		return -EINVAL;
+	}
+
+	if (!st->chip_info->hart_support &&
+	    (config->func == CH_FUNC_CURRENT_INPUT_EXT_POWER_HART ||
+	     config->func == CH_FUNC_CURRENT_INPUT_LOOP_POWER_HART)) {
+		dev_err(st->dev, "Unsupported HART function %u\n", config->func);
+		return -EINVAL;
+	}
+
+	if (config->func == CH_FUNC_DIGITAL_INPUT_LOGIC ||
+	    config->func == CH_FUNC_DIGITAL_INPUT_LOOP_POWER)
+		st->num_comparator_gpios++;
+
+	config->gpo_comparator = fwnode_property_read_bool(channel_node,
+		"adi,gpo-comparator");
+
+	if (!config->gpo_comparator)
+		st->num_gpo_gpios++;
+
+	indio_dev->num_channels += ad74413r_channels_map[config->func].num_channels;
+
+	config->initialized = true;
+
+	return 0;
+}
+
+static int ad74413r_parse_channel_configs(struct iio_dev *indio_dev)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+	struct fwnode_handle *channel_node = NULL;
+	int ret;
+
+	fwnode_for_each_available_child_node(dev_fwnode(st->dev), channel_node) {
+		ret = ad74413r_parse_channel_config(indio_dev, channel_node);
+		if (ret)
+			goto put_channel_node;
+	}
+
+	return 0;
+
+put_channel_node:
+	fwnode_handle_put(channel_node);
+
+	return ret;
+}
+
+static int ad74413r_setup_channels(struct iio_dev *indio_dev)
+{
+	struct ad74413r_state *st = iio_priv(indio_dev);
+	struct ad74413r_channel_config *config;
+	struct iio_chan_spec *channels, *chans;
+	unsigned int i, num_chans, chan_i;
+	int ret;
+
+	channels = devm_kcalloc(st->dev, sizeof(*channels),
+				indio_dev->num_channels, GFP_KERNEL);
+	if (!channels)
+		return -ENOMEM;
+
+	indio_dev->channels = channels;
+
+	for (i = 0; i < AD74413R_CHANNEL_MAX; i++) {
+		config = &st->channel_configs[i];
+		chans = ad74413r_channels_map[config->func].channels;
+		num_chans = ad74413r_channels_map[config->func].num_channels;
+
+		memcpy(channels, chans, num_chans * sizeof(*chans));
+
+		for (chan_i = 0; chan_i < num_chans; chan_i++) {
+			struct iio_chan_spec *chan = &channels[chan_i];
+
+			chan->channel = i;
+			if (chan->output)
+				chan->scan_index = -1;
+			else
+				chan->scan_index = i;
+		}
+
+		ret = ad74413r_set_channel_function(st, i, config->func);
+		if (ret)
+			return ret;
+
+		channels += num_chans;
+	}
+
+	return 0;
+}
+
+static int ad74413r_setup_gpios(struct ad74413r_state *st)
+{
+	struct ad74413r_channel_config *config;
+	unsigned int comp_gpio_i = 0;
+	unsigned int gpo_gpio_i = 0;
+	unsigned int i;
+	u8 gpo_config;
+	int ret;
+
+	for (i = 0; i < AD74413R_CHANNEL_MAX; i++) {
+		config = &st->channel_configs[i];
+
+		if (config->gpo_comparator) {
+			gpo_config = AD74413R_GPO_CONFIG_COMPARATOR;
+		} else {
+			gpo_config = AD74413R_GPO_CONFIG_LOGIC;
+			st->gpo_gpio_offsets[gpo_gpio_i++] = i;
+		}
+
+		if (config->func == CH_FUNC_DIGITAL_INPUT_LOGIC ||
+		    config->func == CH_FUNC_DIGITAL_INPUT_LOOP_POWER)
+			st->comp_gpio_offsets[comp_gpio_i++] = i;
+
+		ret = ad74413r_set_gpo_config(st, i, gpo_config);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static void ad74413r_regulator_disable(void *regulator)
+{
+	regulator_disable(regulator);
+}
+
+static int ad74413r_probe(struct spi_device *spi)
+{
+	struct ad74413r_state *st;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	st->spi = spi;
+	st->dev = &spi->dev;
+	st->chip_info = device_get_match_data(&spi->dev);
+	mutex_init(&st->lock);
+	init_completion(&st->adc_data_completion);
+
+	st->regmap = devm_regmap_init(st->dev, NULL, st,
+				      &ad74413r_regmap_config);
+	if (IS_ERR(st->regmap))
+		return PTR_ERR(st->regmap);
+
+	st->refin_reg = devm_regulator_get(st->dev, "refin");
+	if (IS_ERR(st->refin_reg))
+		return dev_err_probe(st->dev, PTR_ERR(st->refin_reg),
+				     "Failed to get refin regulator\n");
+
+	ret = regulator_enable(st->refin_reg);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(st->dev, ad74413r_regulator_disable,
+				       st->refin_reg);
+	if (ret)
+		return ret;
+
+	st->sense_resistor_ohms = 100000000;
+	device_property_read_u32(st->dev, "shunt-resistor-micro-ohms",
+				 &st->sense_resistor_ohms);
+	st->sense_resistor_ohms /= 1000000;
+
+	st->trig = devm_iio_trigger_alloc(st->dev, "%s-dev%d",
+					  st->chip_info->name, iio_device_id(indio_dev));
+	if (!st->trig)
+		return -ENOMEM;
+
+	st->trig->ops = &ad74413r_trigger_ops;
+	iio_trigger_set_drvdata(st->trig, st);
+
+	ret = devm_iio_trigger_register(st->dev, st->trig);
+	if (ret)
+		return ret;
+
+	indio_dev->name = st->chip_info->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &ad74413r_info;
+	indio_dev->trig = iio_trigger_get(st->trig);
+
+	ret = ad74413r_reset(st);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_parse_channel_configs(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_setup_channels(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = ad74413r_setup_gpios(st);
+	if (ret)
+		return ret;
+
+	if (st->num_gpo_gpios) {
+		st->gpo_gpiochip.owner = THIS_MODULE;
+		st->gpo_gpiochip.label = st->chip_info->name;
+		st->gpo_gpiochip.base = -1;
+		st->gpo_gpiochip.ngpio = st->num_gpo_gpios;
+		st->gpo_gpiochip.parent = st->dev;
+		st->gpo_gpiochip.can_sleep = true;
+		st->gpo_gpiochip.set = ad74413r_gpio_set;
+		st->gpo_gpiochip.set_multiple = ad74413r_gpio_set_multiple;
+		st->gpo_gpiochip.set_config = ad74413r_gpio_set_gpo_config;
+		st->gpo_gpiochip.get_direction =
+			ad74413r_gpio_get_gpo_direction;
+
+		ret = devm_gpiochip_add_data(st->dev, &st->gpo_gpiochip, st);
+		if (ret)
+			return ret;
+	}
+
+	if (st->num_comparator_gpios) {
+		st->comp_gpiochip.owner = THIS_MODULE;
+		st->comp_gpiochip.label = st->chip_info->name;
+		st->comp_gpiochip.base = -1;
+		st->comp_gpiochip.ngpio = st->num_comparator_gpios;
+		st->comp_gpiochip.parent = st->dev;
+		st->comp_gpiochip.can_sleep = true;
+		st->comp_gpiochip.get = ad74413r_gpio_get;
+		st->comp_gpiochip.get_multiple = ad74413r_gpio_get_multiple;
+		st->comp_gpiochip.set_config = ad74413r_gpio_set_comp_config;
+		st->comp_gpiochip.get_direction =
+			ad74413r_gpio_get_comp_direction;
+
+		ret = devm_gpiochip_add_data(st->dev, &st->comp_gpiochip, st);
+		if (ret)
+			return ret;
+	}
+
+	ret = ad74413r_set_adc_conv_seq(st, AD74413R_CONV_SEQ_OFF);
+	if (ret)
+		return ret;
+
+	ret = devm_request_irq(st->dev, spi->irq, ad74413r_adc_data_interrupt,
+			       0, st->chip_info->name, indio_dev);
+	if (ret)
+		return dev_err_probe(st->dev, ret, "Failed to request irq\n");
+
+	ret = devm_iio_triggered_buffer_setup(st->dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      &ad74413r_trigger_handler,
+					      &ad74413r_buffer_ops);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(st->dev, indio_dev);
+}
+
+static int ad74413r_unregister_driver(struct spi_driver *spi)
+{
+	spi_unregister_driver(spi);
+
+	return 0;
+}
+
+static int __init ad74413r_register_driver(struct spi_driver *spi)
+{
+	crc8_populate_msb(ad74413r_crc8_table, AD74413R_CRC_POLYNOMIAL);
+
+	return spi_register_driver(spi);
+}
+
+static const struct ad74413r_chip_info ad74412r_chip_info_data = {
+	.hart_support = false,
+	.name = "ad74412r",
+};
+
+static const struct ad74413r_chip_info ad74413r_chip_info_data = {
+	.hart_support = true,
+	.name = "ad74413r",
+};
+
+static const struct of_device_id ad74413r_dt_id[] = {
+	{
+		.compatible = "adi,ad74412r",
+		.data = &ad74412r_chip_info_data,
+	},
+	{
+		.compatible = "adi,ad74413r",
+		.data = &ad74413r_chip_info_data,
+	},
+	{},
+};
+MODULE_DEVICE_TABLE(of, ad74413r_dt_id);
+
+static struct spi_driver ad74413r_driver = {
+	.driver = {
+		   .name = "ad74413r",
+		   .of_match_table = ad74413r_dt_id,
+	},
+	.probe = ad74413r_probe,
+};
+
+module_driver(ad74413r_driver,
+	      ad74413r_register_driver,
+	      ad74413r_unregister_driver);
+
+MODULE_AUTHOR("Cosmin Tanislav <cosmin.tanislav@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD74413R ADDAC");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/adc/stx104.c b/drivers/iio/addac/stx104.c
index f87bbc711ccc..48a91a95e597 100644
--- a/drivers/iio/adc/stx104.c
+++ b/drivers/iio/addac/stx104.c
@@ -16,6 +16,7 @@
 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/spinlock.h>
+#include <linux/types.h>
 
 #define STX104_OUT_CHAN(chan) {				\
 	.type = IIO_VOLTAGE,				\
@@ -45,13 +46,35 @@ module_param_hw_array(base, uint, ioport, &num_stx104, 0);
 MODULE_PARM_DESC(base, "Apex Embedded Systems STX104 base addresses");
 
 /**
+ * struct stx104_reg - device register structure
+ * @ssr_ad:	Software Strobe Register and ADC Data
+ * @achan:	ADC Channel
+ * @dio:	Digital I/O
+ * @dac:	DAC Channels
+ * @cir_asr:	Clear Interrupts and ADC Status
+ * @acr:	ADC Control
+ * @pccr_fsh:	Pacer Clock Control and FIFO Status MSB
+ * @acfg:	ADC Configuration
+ */
+struct stx104_reg {
+	u16 ssr_ad;
+	u8 achan;
+	u8 dio;
+	u16 dac[2];
+	u8 cir_asr;
+	u8 acr;
+	u8 pccr_fsh;
+	u8 acfg;
+};
+
+/**
  * struct stx104_iio - IIO device private data structure
  * @chan_out_states:	channels' output states
- * @base:		base port address of the IIO device
+ * @reg:		I/O address offset for the device registers
  */
 struct stx104_iio {
 	unsigned int chan_out_states[STX104_NUM_OUT_CHAN];
-	unsigned int base;
+	struct stx104_reg __iomem *reg;
 };
 
 /**
@@ -64,7 +87,7 @@ struct stx104_iio {
 struct stx104_gpio {
 	struct gpio_chip chip;
 	spinlock_t lock;
-	unsigned int base;
+	u8 __iomem *base;
 	unsigned int out_state;
 };
 
@@ -72,6 +95,7 @@ static int stx104_read_raw(struct iio_dev *indio_dev,
 	struct iio_chan_spec const *chan, int *val, int *val2, long mask)
 {
 	struct stx104_iio *const priv = iio_priv(indio_dev);
+	struct stx104_reg __iomem *const reg = priv->reg;
 	unsigned int adc_config;
 	int adbu;
 	int gain;
@@ -79,7 +103,7 @@ static int stx104_read_raw(struct iio_dev *indio_dev,
 	switch (mask) {
 	case IIO_CHAN_INFO_HARDWAREGAIN:
 		/* get gain configuration */
-		adc_config = inb(priv->base + 11);
+		adc_config = ioread8(&reg->acfg);
 		gain = adc_config & 0x3;
 
 		*val = 1 << gain;
@@ -91,24 +115,26 @@ static int stx104_read_raw(struct iio_dev *indio_dev,
 		}
 
 		/* select ADC channel */
-		outb(chan->channel | (chan->channel << 4), priv->base + 2);
+		iowrite8(chan->channel | (chan->channel << 4), &reg->achan);
 
-		/* trigger ADC sample capture and wait for completion */
-		outb(0, priv->base);
-		while (inb(priv->base + 8) & BIT(7));
+		/* trigger ADC sample capture by writing to the 8-bit
+		 * Software Strobe Register and wait for completion
+		 */
+		iowrite8(0, &reg->ssr_ad);
+		while (ioread8(&reg->cir_asr) & BIT(7));
 
-		*val = inw(priv->base);
+		*val = ioread16(&reg->ssr_ad);
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_OFFSET:
 		/* get ADC bipolar/unipolar configuration */
-		adc_config = inb(priv->base + 11);
+		adc_config = ioread8(&reg->acfg);
 		adbu = !(adc_config & BIT(2));
 
 		*val = -32768 * adbu;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		/* get ADC bipolar/unipolar and gain configuration */
-		adc_config = inb(priv->base + 11);
+		adc_config = ioread8(&reg->acfg);
 		adbu = !(adc_config & BIT(2));
 		gain = adc_config & 0x3;
 
@@ -130,16 +156,16 @@ static int stx104_write_raw(struct iio_dev *indio_dev,
 		/* Only four gain states (x1, x2, x4, x8) */
 		switch (val) {
 		case 1:
-			outb(0, priv->base + 11);
+			iowrite8(0, &priv->reg->acfg);
 			break;
 		case 2:
-			outb(1, priv->base + 11);
+			iowrite8(1, &priv->reg->acfg);
 			break;
 		case 4:
-			outb(2, priv->base + 11);
+			iowrite8(2, &priv->reg->acfg);
 			break;
 		case 8:
-			outb(3, priv->base + 11);
+			iowrite8(3, &priv->reg->acfg);
 			break;
 		default:
 			return -EINVAL;
@@ -153,7 +179,7 @@ static int stx104_write_raw(struct iio_dev *indio_dev,
 				return -EINVAL;
 
 			priv->chan_out_states[chan->channel] = val;
-			outw(val, priv->base + 4 + 2 * chan->channel);
+			iowrite16(val, &priv->reg->dac[chan->channel]);
 
 			return 0;
 		}
@@ -222,7 +248,7 @@ static int stx104_gpio_get(struct gpio_chip *chip, unsigned int offset)
 	if (offset >= 4)
 		return -EINVAL;
 
-	return !!(inb(stx104gpio->base) & BIT(offset));
+	return !!(ioread8(stx104gpio->base) & BIT(offset));
 }
 
 static int stx104_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask,
@@ -230,7 +256,7 @@ static int stx104_gpio_get_multiple(struct gpio_chip *chip, unsigned long *mask,
 {
 	struct stx104_gpio *const stx104gpio = gpiochip_get_data(chip);
 
-	*bits = inb(stx104gpio->base);
+	*bits = ioread8(stx104gpio->base);
 
 	return 0;
 }
@@ -252,7 +278,7 @@ static void stx104_gpio_set(struct gpio_chip *chip, unsigned int offset,
 	else
 		stx104gpio->out_state &= ~mask;
 
-	outb(stx104gpio->out_state, stx104gpio->base);
+	iowrite8(stx104gpio->out_state, stx104gpio->base);
 
 	spin_unlock_irqrestore(&stx104gpio->lock, flags);
 }
@@ -279,7 +305,7 @@ static void stx104_gpio_set_multiple(struct gpio_chip *chip,
 
 	stx104gpio->out_state &= ~*mask;
 	stx104gpio->out_state |= *mask & *bits;
-	outb(stx104gpio->out_state, stx104gpio->base);
+	iowrite8(stx104gpio->out_state, stx104gpio->base);
 
 	spin_unlock_irqrestore(&stx104gpio->lock, flags);
 }
@@ -306,11 +332,16 @@ static int stx104_probe(struct device *dev, unsigned int id)
 		return -EBUSY;
 	}
 
+	priv = iio_priv(indio_dev);
+	priv->reg = devm_ioport_map(dev, base[id], STX104_EXTENT);
+	if (!priv->reg)
+		return -ENOMEM;
+
 	indio_dev->info = &stx104_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	/* determine if differential inputs */
-	if (inb(base[id] + 8) & BIT(5)) {
+	if (ioread8(&priv->reg->cir_asr) & BIT(5)) {
 		indio_dev->num_channels = ARRAY_SIZE(stx104_channels_diff);
 		indio_dev->channels = stx104_channels_diff;
 	} else {
@@ -319,20 +350,16 @@ static int stx104_probe(struct device *dev, unsigned int id)
 	}
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
-
-	priv = iio_priv(indio_dev);
-	priv->base = base[id];
 
 	/* configure device for software trigger operation */
-	outb(0, base[id] + 9);
+	iowrite8(0, &priv->reg->acr);
 
 	/* initialize gain setting to x1 */
-	outb(0, base[id] + 11);
+	iowrite8(0, &priv->reg->acfg);
 
 	/* initialize DAC output to 0V */
-	outw(0, base[id] + 4);
-	outw(0, base[id] + 6);
+	iowrite16(0, &priv->reg->dac[0]);
+	iowrite16(0, &priv->reg->dac[1]);
 
 	stx104gpio->chip.label = dev_name(dev);
 	stx104gpio->chip.parent = dev;
@@ -347,7 +374,7 @@ static int stx104_probe(struct device *dev, unsigned int id)
 	stx104gpio->chip.get_multiple = stx104_gpio_get_multiple;
 	stx104gpio->chip.set = stx104_gpio_set;
 	stx104gpio->chip.set_multiple = stx104_gpio_set_multiple;
-	stx104gpio->base = base[id] + 3;
+	stx104gpio->base = &priv->reg->dio;
 	stx104gpio->out_state = 0x0;
 
 	spin_lock_init(&stx104gpio->lock);
diff --git a/drivers/iio/afe/Kconfig b/drivers/iio/afe/Kconfig
index 4fa397822cff..9a1d95c1c7ed 100644
--- a/drivers/iio/afe/Kconfig
+++ b/drivers/iio/afe/Kconfig
@@ -8,7 +8,6 @@ menu "Analog Front Ends"
 
 config IIO_RESCALE
 	tristate "IIO rescale"
-	depends on OF || COMPILE_TEST
 	help
 	  Say yes here to build support for the IIO rescaling
 	  that handles voltage dividers, current sense shunts and
diff --git a/drivers/iio/afe/iio-rescale.c b/drivers/iio/afe/iio-rescale.c
index e9ceee66d1e7..1f280c360701 100644
--- a/drivers/iio/afe/iio-rescale.c
+++ b/drivers/iio/afe/iio-rescale.c
@@ -3,71 +3,220 @@
  * IIO rescale driver
  *
  * Copyright (C) 2018 Axentia Technologies AB
+ * Copyright (C) 2022 Liam Beguin <liambeguin@gmail.com>
  *
  * Author: Peter Rosin <peda@axentia.se>
  */
 
 #include <linux/err.h>
 #include <linux/gcd.h>
-#include <linux/iio/consumer.h>
-#include <linux/iio/iio.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 
-struct rescale;
+#include <linux/iio/afe/rescale.h>
+#include <linux/iio/consumer.h>
+#include <linux/iio/iio.h>
 
-struct rescale_cfg {
-	enum iio_chan_type type;
-	int (*props)(struct device *dev, struct rescale *rescale);
-};
+int rescale_process_scale(struct rescale *rescale, int scale_type,
+			  int *val, int *val2)
+{
+	s64 tmp;
+	int _val, _val2;
+	s32 rem, rem2;
+	u32 mult;
+	u32 neg;
+
+	switch (scale_type) {
+	case IIO_VAL_INT:
+		*val *= rescale->numerator;
+		if (rescale->denominator == 1)
+			return scale_type;
+		*val2 = rescale->denominator;
+		return IIO_VAL_FRACTIONAL;
+	case IIO_VAL_FRACTIONAL:
+		/*
+		 * When the product of both scales doesn't overflow, avoid
+		 * potential accuracy loss (for in kernel consumers) by
+		 * keeping a fractional representation.
+		 */
+		if (!check_mul_overflow(*val, rescale->numerator, &_val) &&
+		    !check_mul_overflow(*val2, rescale->denominator, &_val2)) {
+			*val = _val;
+			*val2 = _val2;
+			return IIO_VAL_FRACTIONAL;
+		}
+		fallthrough;
+	case IIO_VAL_FRACTIONAL_LOG2:
+		tmp = (s64)*val * 1000000000LL;
+		tmp = div_s64(tmp, rescale->denominator);
+		tmp *= rescale->numerator;
+
+		tmp = div_s64_rem(tmp, 1000000000LL, &rem);
+		*val = tmp;
+
+		if (!rem)
+			return scale_type;
+
+		if (scale_type == IIO_VAL_FRACTIONAL)
+			tmp = *val2;
+		else
+			tmp = ULL(1) << *val2;
+
+		rem2 = *val % (int)tmp;
+		*val = *val / (int)tmp;
+
+		*val2 = rem / (int)tmp;
+		if (rem2)
+			*val2 += div_s64((s64)rem2 * 1000000000LL, tmp);
+
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_VAL_INT_PLUS_NANO:
+	case IIO_VAL_INT_PLUS_MICRO:
+		mult = scale_type == IIO_VAL_INT_PLUS_NANO ? 1000000000L : 1000000L;
+
+		/*
+		 * For IIO_VAL_INT_PLUS_{MICRO,NANO} scale types if either *val
+		 * OR *val2 is negative the schan scale is negative, i.e.
+		 * *val = 1 and *val2 = -0.5 yields -1.5 not -0.5.
+		 */
+		neg = *val < 0 || *val2 < 0;
+
+		tmp = (s64)abs(*val) * abs(rescale->numerator);
+		*val = div_s64_rem(tmp, abs(rescale->denominator), &rem);
+
+		tmp = (s64)rem * mult + (s64)abs(*val2) * abs(rescale->numerator);
+		tmp = div_s64(tmp, abs(rescale->denominator));
+
+		*val += div_s64_rem(tmp, mult, val2);
+
+		/*
+		 * If only one of the rescaler elements or the schan scale is
+		 * negative, the combined scale is negative.
+		 */
+		if (neg ^ ((rescale->numerator < 0) ^ (rescale->denominator < 0))) {
+			if (*val)
+				*val = -*val;
+			else
+				*val2 = -*val2;
+		}
 
-struct rescale {
-	const struct rescale_cfg *cfg;
-	struct iio_channel *source;
-	struct iio_chan_spec chan;
-	struct iio_chan_spec_ext_info *ext_info;
-	s32 numerator;
-	s32 denominator;
-};
+		return scale_type;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+EXPORT_SYMBOL_NS_GPL(rescale_process_scale, IIO_RESCALE);
+
+int rescale_process_offset(struct rescale *rescale, int scale_type,
+			   int scale, int scale2, int schan_off,
+			   int *val, int *val2)
+{
+	s64 tmp, tmp2;
+
+	switch (scale_type) {
+	case IIO_VAL_FRACTIONAL:
+		tmp = (s64)rescale->offset * scale2;
+		*val = div_s64(tmp, scale) + schan_off;
+		return IIO_VAL_INT;
+	case IIO_VAL_INT:
+		*val = div_s64(rescale->offset, scale) + schan_off;
+		return IIO_VAL_INT;
+	case IIO_VAL_FRACTIONAL_LOG2:
+		tmp = (s64)rescale->offset * (1 << scale2);
+		*val = div_s64(tmp, scale) + schan_off;
+		return IIO_VAL_INT;
+	case IIO_VAL_INT_PLUS_NANO:
+		tmp = (s64)rescale->offset * 1000000000LL;
+		tmp2 = ((s64)scale * 1000000000LL) + scale2;
+		*val = div64_s64(tmp, tmp2) + schan_off;
+		return IIO_VAL_INT;
+	case IIO_VAL_INT_PLUS_MICRO:
+		tmp = (s64)rescale->offset * 1000000LL;
+		tmp2 = ((s64)scale * 1000000LL) + scale2;
+		*val = div64_s64(tmp, tmp2) + schan_off;
+		return IIO_VAL_INT;
+	default:
+		return -EOPNOTSUPP;
+	}
+}
+EXPORT_SYMBOL_NS_GPL(rescale_process_offset, IIO_RESCALE);
 
 static int rescale_read_raw(struct iio_dev *indio_dev,
 			    struct iio_chan_spec const *chan,
 			    int *val, int *val2, long mask)
 {
 	struct rescale *rescale = iio_priv(indio_dev);
-	unsigned long long tmp;
+	int scale, scale2;
+	int schan_off = 0;
 	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		return iio_read_channel_raw(rescale->source, val);
+		if (rescale->chan_processed)
+			/*
+			 * When only processed channels are supported, we
+			 * read the processed data and scale it by 1/1
+			 * augmented with whatever the rescaler has calculated.
+			 */
+			return iio_read_channel_processed(rescale->source, val);
+		else
+			return iio_read_channel_raw(rescale->source, val);
 
 	case IIO_CHAN_INFO_SCALE:
-		ret = iio_read_channel_scale(rescale->source, val, val2);
-		switch (ret) {
-		case IIO_VAL_FRACTIONAL:
-			*val *= rescale->numerator;
-			*val2 *= rescale->denominator;
-			return ret;
-		case IIO_VAL_INT:
-			*val *= rescale->numerator;
-			if (rescale->denominator == 1)
-				return ret;
-			*val2 = rescale->denominator;
-			return IIO_VAL_FRACTIONAL;
-		case IIO_VAL_FRACTIONAL_LOG2:
-			tmp = *val * 1000000000LL;
-			do_div(tmp, rescale->denominator);
-			tmp *= rescale->numerator;
-			do_div(tmp, 1000000000LL);
-			*val = tmp;
-			return ret;
-		default:
-			return -EOPNOTSUPP;
+		if (rescale->chan_processed) {
+			/*
+			 * Processed channels are scaled 1-to-1
+			 */
+			*val = 1;
+			*val2 = 1;
+			ret = IIO_VAL_FRACTIONAL;
+		} else {
+			ret = iio_read_channel_scale(rescale->source, val, val2);
+		}
+		return rescale_process_scale(rescale, ret, val, val2);
+	case IIO_CHAN_INFO_OFFSET:
+		/*
+		 * Processed channels are scaled 1-to-1 and source offset is
+		 * already taken into account.
+		 *
+		 * In other cases, real world measurement are expressed as:
+		 *
+		 *	schan_scale * (raw + schan_offset)
+		 *
+		 * Given that the rescaler parameters are applied recursively:
+		 *
+		 *	rescaler_scale * (schan_scale * (raw + schan_offset) +
+		 *		rescaler_offset)
+		 *
+		 * Or,
+		 *
+		 *	(rescaler_scale * schan_scale) * (raw +
+		 *		(schan_offset +	rescaler_offset / schan_scale)
+		 *
+		 * Thus, reusing the original expression the parameters exposed
+		 * to userspace are:
+		 *
+		 *	scale = schan_scale * rescaler_scale
+		 *	offset = schan_offset + rescaler_offset / schan_scale
+		 */
+		if (rescale->chan_processed) {
+			*val = rescale->offset;
+			return IIO_VAL_INT;
 		}
+
+		if (iio_channel_has_info(rescale->source->channel,
+					 IIO_CHAN_INFO_OFFSET)) {
+			ret = iio_read_channel_offset(rescale->source,
+						      &schan_off, NULL);
+			if (ret != IIO_VAL_INT)
+				return ret < 0 ? ret : -EOPNOTSUPP;
+		}
+
+		ret = iio_read_channel_scale(rescale->source, &scale, &scale2);
+		return rescale_process_offset(rescale, ret, scale, scale2,
+					      schan_off, val, val2);
 	default:
 		return -EINVAL;
 	}
@@ -130,16 +279,30 @@ static int rescale_configure_channel(struct device *dev,
 	chan->ext_info = rescale->ext_info;
 	chan->type = rescale->cfg->type;
 
-	if (!iio_channel_has_info(schan, IIO_CHAN_INFO_RAW) ||
-	    !iio_channel_has_info(schan, IIO_CHAN_INFO_SCALE)) {
-		dev_err(dev, "source channel does not support raw/scale\n");
+	if (iio_channel_has_info(schan, IIO_CHAN_INFO_RAW) &&
+	    iio_channel_has_info(schan, IIO_CHAN_INFO_SCALE)) {
+		dev_info(dev, "using raw+scale source channel\n");
+	} else if (iio_channel_has_info(schan, IIO_CHAN_INFO_PROCESSED)) {
+		dev_info(dev, "using processed channel\n");
+		rescale->chan_processed = true;
+	} else {
+		dev_err(dev, "source channel is not supported\n");
 		return -EINVAL;
 	}
 
 	chan->info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 		BIT(IIO_CHAN_INFO_SCALE);
 
-	if (iio_channel_has_available(schan, IIO_CHAN_INFO_RAW))
+	if (rescale->offset)
+		chan->info_mask_separate |= BIT(IIO_CHAN_INFO_OFFSET);
+
+	/*
+	 * Using .read_avail() is fringe to begin with and makes no sense
+	 * whatsoever for processed channels, so we make sure that this cannot
+	 * be called on a processed channel.
+	 */
+	if (iio_channel_has_available(schan, IIO_CHAN_INFO_RAW) &&
+	    !rescale->chan_processed)
 		chan->info_mask_separate_available |= BIT(IIO_CHAN_INFO_RAW);
 
 	return 0;
@@ -232,10 +395,78 @@ static int rescale_voltage_divider_props(struct device *dev,
 	return 0;
 }
 
+static int rescale_temp_sense_rtd_props(struct device *dev,
+					struct rescale *rescale)
+{
+	u32 factor;
+	u32 alpha;
+	u32 iexc;
+	u32 tmp;
+	int ret;
+	u32 r0;
+
+	ret = device_property_read_u32(dev, "excitation-current-microamp",
+				       &iexc);
+	if (ret) {
+		dev_err(dev, "failed to read excitation-current-microamp: %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = device_property_read_u32(dev, "alpha-ppm-per-celsius", &alpha);
+	if (ret) {
+		dev_err(dev, "failed to read alpha-ppm-per-celsius: %d\n",
+			ret);
+		return ret;
+	}
+
+	ret = device_property_read_u32(dev, "r-naught-ohms", &r0);
+	if (ret) {
+		dev_err(dev, "failed to read r-naught-ohms: %d\n", ret);
+		return ret;
+	}
+
+	tmp = r0 * iexc * alpha / 1000000;
+	factor = gcd(tmp, 1000000);
+	rescale->numerator = 1000000 / factor;
+	rescale->denominator = tmp / factor;
+
+	rescale->offset = -1 * ((r0 * iexc) / 1000);
+
+	return 0;
+}
+
+static int rescale_temp_transducer_props(struct device *dev,
+					 struct rescale *rescale)
+{
+	s32 offset = 0;
+	s32 sense = 1;
+	s32 alpha;
+	int ret;
+
+	device_property_read_u32(dev, "sense-offset-millicelsius", &offset);
+	device_property_read_u32(dev, "sense-resistor-ohms", &sense);
+	ret = device_property_read_u32(dev, "alpha-ppm-per-celsius", &alpha);
+	if (ret) {
+		dev_err(dev, "failed to read alpha-ppm-per-celsius: %d\n", ret);
+		return ret;
+	}
+
+	rescale->numerator = 1000000;
+	rescale->denominator = alpha * sense;
+
+	rescale->offset = div_s64((s64)offset * rescale->denominator,
+				  rescale->numerator);
+
+	return 0;
+}
+
 enum rescale_variant {
 	CURRENT_SENSE_AMPLIFIER,
 	CURRENT_SENSE_SHUNT,
 	VOLTAGE_DIVIDER,
+	TEMP_SENSE_RTD,
+	TEMP_TRANSDUCER,
 };
 
 static const struct rescale_cfg rescale_cfg[] = {
@@ -251,6 +482,14 @@ static const struct rescale_cfg rescale_cfg[] = {
 		.type = IIO_VOLTAGE,
 		.props = rescale_voltage_divider_props,
 	},
+	[TEMP_SENSE_RTD] = {
+		.type = IIO_TEMP,
+		.props = rescale_temp_sense_rtd_props,
+	},
+	[TEMP_TRANSDUCER] = {
+		.type = IIO_TEMP,
+		.props = rescale_temp_transducer_props,
+	},
 };
 
 static const struct of_device_id rescale_match[] = {
@@ -260,6 +499,10 @@ static const struct of_device_id rescale_match[] = {
 	  .data = &rescale_cfg[CURRENT_SENSE_SHUNT], },
 	{ .compatible = "voltage-divider",
 	  .data = &rescale_cfg[VOLTAGE_DIVIDER], },
+	{ .compatible = "temperature-sense-rtd",
+	  .data = &rescale_cfg[TEMP_SENSE_RTD], },
+	{ .compatible = "temperature-transducer",
+	  .data = &rescale_cfg[TEMP_TRANSDUCER], },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, rescale_match);
@@ -276,11 +519,9 @@ static int rescale_probe(struct platform_device *pdev)
 	int ret;
 
 	source = devm_iio_channel_get(dev, NULL);
-	if (IS_ERR(source)) {
-		if (PTR_ERR(source) != -EPROBE_DEFER)
-			dev_err(dev, "failed to get source channel\n");
-		return PTR_ERR(source);
-	}
+	if (IS_ERR(source))
+		return dev_err_probe(dev, PTR_ERR(source),
+				     "failed to get source channel\n");
 
 	sizeof_ext_info = iio_get_channel_ext_info_count(source);
 	if (sizeof_ext_info) {
@@ -296,9 +537,10 @@ static int rescale_probe(struct platform_device *pdev)
 
 	rescale = iio_priv(indio_dev);
 
-	rescale->cfg = of_device_get_match_data(dev);
+	rescale->cfg = device_get_match_data(dev);
 	rescale->numerator = 1;
 	rescale->denominator = 1;
+	rescale->offset = 0;
 
 	ret = rescale->cfg->props(dev, rescale);
 	if (ret)
@@ -314,7 +556,6 @@ static int rescale_probe(struct platform_device *pdev)
 	rescale->source = source;
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &rescale_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = &rescale->chan;
diff --git a/drivers/iio/amplifiers/Kconfig b/drivers/iio/amplifiers/Kconfig
index da7f126d197b..f217a2a1e958 100644
--- a/drivers/iio/amplifiers/Kconfig
+++ b/drivers/iio/amplifiers/Kconfig
@@ -18,8 +18,30 @@ config AD8366
 	    AD8366 Dual-Digital Variable Gain Amplifier (VGA)
 	    ADA4961 BiCMOS RF Digital Gain Amplifier (DGA)
 	    ADL5240 Digitally controlled variable gain amplifier (VGA)
+	    HMC1119 0.25 dB LSB, 7-Bit, Silicon Digital Attenuator
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad8366.
 
+config ADA4250
+	tristate "Analog Devices ADA4250 Instrumentation Amplifier"
+	depends on SPI
+	help
+	  Say yes here to build support for Analog Devices ADA4250
+	  SPI Amplifier's support. The driver provides direct access via
+	  sysfs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ada4250.
+
+config HMC425
+	tristate "Analog Devices HMC425A and similar GPIO Gain Amplifiers"
+	depends on GPIOLIB
+	help
+	  Say yes here to build support for Analog Devices HMC425A and similar
+	  gain amplifiers or step attenuators.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hmc425a.
+
 endmenu
diff --git a/drivers/iio/amplifiers/Makefile b/drivers/iio/amplifiers/Makefile
index 9abef2ebe9bc..2126331129cf 100644
--- a/drivers/iio/amplifiers/Makefile
+++ b/drivers/iio/amplifiers/Makefile
@@ -5,3 +5,5 @@
 
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_AD8366) += ad8366.o
+obj-$(CONFIG_ADA4250) += ada4250.o
+obj-$(CONFIG_HMC425) += hmc425a.o
diff --git a/drivers/iio/amplifiers/ad8366.c b/drivers/iio/amplifiers/ad8366.c
index 0176d3d8cc9c..f2c2ea79a07f 100644
--- a/drivers/iio/amplifiers/ad8366.c
+++ b/drivers/iio/amplifiers/ad8366.c
@@ -5,6 +5,7 @@
  *   AD8366 Dual-Digital Variable Gain Amplifier (VGA)
  *   ADA4961 BiCMOS RF Digital Gain Amplifier (DGA)
  *   ADL5240 Digitally controlled variable gain amplifier (VGA)
+ *   HMC1119 0.25 dB LSB, 7-Bit, Silicon Digital Attenuator
  *
  * Copyright 2012-2019 Analog Devices Inc.
  */
@@ -27,6 +28,7 @@ enum ad8366_type {
 	ID_AD8366,
 	ID_ADA4961,
 	ID_ADL5240,
+	ID_HMC1119,
 };
 
 struct ad8366_info {
@@ -43,10 +45,10 @@ struct ad8366_state {
 	enum ad8366_type	type;
 	struct ad8366_info	*info;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	unsigned char		data[2] ____cacheline_aligned;
+	unsigned char		data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static struct ad8366_info ad8366_infos[] = {
@@ -62,6 +64,10 @@ static struct ad8366_info ad8366_infos[] = {
 		.gain_min = -11500,
 		.gain_max = 20000,
 	},
+	[ID_HMC1119] = {
+		.gain_min = -31750,
+		.gain_max = 0,
+	},
 };
 
 static int ad8366_write(struct iio_dev *indio_dev,
@@ -84,6 +90,9 @@ static int ad8366_write(struct iio_dev *indio_dev,
 	case ID_ADL5240:
 		st->data[0] = (ch_a & 0x3F);
 		break;
+	case ID_HMC1119:
+		st->data[0] = ch_a;
+		break;
 	}
 
 	ret = spi_write(st->spi, st->data, indio_dev->num_channels);
@@ -118,6 +127,9 @@ static int ad8366_read_raw(struct iio_dev *indio_dev,
 		case ID_ADL5240:
 			gain = 20000 - 31500 + code * 500;
 			break;
+		case ID_HMC1119:
+			gain = -1 * code * 250;
+			break;
 		}
 
 		/* Values in dB */
@@ -164,6 +176,9 @@ static int ad8366_write_raw(struct iio_dev *indio_dev,
 	case ID_ADL5240:
 		code = ((gain - 500 - 20000) / 500) & 0x3F;
 		break;
+	case ID_HMC1119:
+		code = (abs(gain) / 250) & 0x7F;
+		break;
 	}
 
 	mutex_lock(&st->lock);
@@ -180,9 +195,22 @@ static int ad8366_write_raw(struct iio_dev *indio_dev,
 	return ret;
 }
 
+static int ad8366_write_raw_get_fmt(struct iio_dev *indio_dev,
+				    struct iio_chan_spec const *chan,
+				    long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		return IIO_VAL_INT_PLUS_MICRO_DB;
+	default:
+		return -EINVAL;
+	}
+}
+
 static const struct iio_info ad8366_info = {
 	.read_raw = &ad8366_read_raw,
 	.write_raw = &ad8366_write_raw,
+	.write_raw_get_fmt = &ad8366_write_raw_get_fmt,
 };
 
 #define AD8366_CHAN(_channel) {				\
@@ -233,8 +261,12 @@ static int ad8366_probe(struct spi_device *spi)
 		break;
 	case ID_ADA4961:
 	case ID_ADL5240:
-		st->reset_gpio = devm_gpiod_get(&spi->dev, "reset",
-			GPIOD_OUT_HIGH);
+	case ID_HMC1119:
+		st->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_HIGH);
+		if (IS_ERR(st->reset_gpio)) {
+			ret = PTR_ERR(st->reset_gpio);
+			goto error_disable_reg;
+		}
 		indio_dev->channels = ada4961_channels;
 		indio_dev->num_channels = ARRAY_SIZE(ada4961_channels);
 		break;
@@ -245,7 +277,6 @@ static int ad8366_probe(struct spi_device *spi)
 	}
 
 	st->info = &ad8366_infos[st->type];
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad8366_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -267,7 +298,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int ad8366_remove(struct spi_device *spi)
+static void ad8366_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad8366_state *st = iio_priv(indio_dev);
@@ -277,14 +308,13 @@ static int ad8366_remove(struct spi_device *spi)
 
 	if (!IS_ERR(reg))
 		regulator_disable(reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad8366_id[] = {
 	{"ad8366",  ID_AD8366},
 	{"ada4961", ID_ADA4961},
 	{"adl5240", ID_ADL5240},
+	{"hmc1119", ID_HMC1119},
 	{}
 };
 MODULE_DEVICE_TABLE(spi, ad8366_id);
diff --git a/drivers/iio/amplifiers/ada4250.c b/drivers/iio/amplifiers/ada4250.c
new file mode 100644
index 000000000000..4b32d350dc5d
--- /dev/null
+++ b/drivers/iio/amplifiers/ada4250.c
@@ -0,0 +1,403 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADA4250 driver
+ *
+ * Copyright 2022 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <asm/unaligned.h>
+
+/* ADA4250 Register Map */
+#define ADA4250_REG_GAIN_MUX        0x00
+#define ADA4250_REG_REFBUF_EN       0x01
+#define ADA4250_REG_RESET           0x02
+#define ADA4250_REG_SNSR_CAL_VAL    0x04
+#define ADA4250_REG_SNSR_CAL_CNFG   0x05
+#define ADA4250_REG_DIE_REV         0x18
+#define ADA4250_REG_CHIP_ID         0x19
+
+/* ADA4250_REG_GAIN_MUX Map */
+#define ADA4250_GAIN_MUX_MSK        GENMASK(2, 0)
+
+/* ADA4250_REG_REFBUF Map */
+#define ADA4250_REFBUF_MSK          BIT(0)
+
+/* ADA4250_REG_RESET Map */
+#define ADA4250_RESET_MSK           BIT(0)
+
+/* ADA4250_REG_SNSR_CAL_VAL Map */
+#define ADA4250_CAL_CFG_BIAS_MSK    GENMASK(7, 0)
+
+/* ADA4250_REG_SNSR_CAL_CNFG Bit Definition */
+#define ADA4250_BIAS_SET_MSK        GENMASK(3, 2)
+#define ADA4250_RANGE_SET_MSK       GENMASK(1, 0)
+
+/* Miscellaneous definitions */
+#define ADA4250_CHIP_ID             0x4250
+#define ADA4250_RANGE1              0
+#define	ADA4250_RANGE4              3
+
+/* ADA4250 current bias set */
+enum ada4250_current_bias {
+	ADA4250_BIAS_DISABLED,
+	ADA4250_BIAS_BANDGAP,
+	ADA4250_BIAS_AVDD,
+};
+
+struct ada4250_state {
+	struct spi_device	*spi;
+	struct regmap		*regmap;
+	struct regulator	*reg;
+	/* Protect against concurrent accesses to the device and data content */
+	struct mutex		lock;
+	u8			bias;
+	u8			gain;
+	int			offset_uv;
+	bool			refbuf_en;
+};
+
+/* ADA4250 Current Bias Source Settings: Disabled, Bandgap Reference, AVDD */
+static const int calibbias_table[] = {0, 1, 2};
+
+/* ADA4250 Gain (V/V) values: 1, 2, 4, 8, 16, 32, 64, 128 */
+static const int hwgain_table[] = {1, 2, 4, 8, 16, 32, 64, 128};
+
+static const struct regmap_config ada4250_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.read_flag_mask = BIT(7),
+	.max_register = 0x1A,
+};
+
+static int ada4250_set_offset_uv(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 int offset_uv)
+{
+	struct ada4250_state *st = iio_priv(indio_dev);
+
+	int i, ret, x[8], max_vos, min_vos, voltage_v, vlsb = 0;
+	u8 offset_raw, range = ADA4250_RANGE1;
+	u32 lsb_coeff[6] = {1333, 2301, 4283, 8289, 16311, 31599};
+
+	if (st->bias == 0 || st->bias == 3)
+		return -EINVAL;
+
+	voltage_v = regulator_get_voltage(st->reg);
+	voltage_v = DIV_ROUND_CLOSEST(voltage_v, 1000000);
+
+	if (st->bias == ADA4250_BIAS_AVDD)
+		x[0] = voltage_v;
+	else
+		x[0] = 5;
+
+	x[1] = 126 * (x[0] - 1);
+
+	for (i = 0; i < 6; i++)
+		x[i + 2] = DIV_ROUND_CLOSEST(x[1] * 1000, lsb_coeff[i]);
+
+	if (st->gain == 0)
+		return -EINVAL;
+
+	/*
+	 * Compute Range and Voltage per LSB for the Sensor Offset Calibration
+	 * Example of computation for Range 1 and Range 2 (Curren Bias Set = AVDD):
+	 *                     Range 1                            Range 2
+	 *   Gain   | Max Vos(mV) |   LSB(mV)        |  Max Vos(mV)  | LSB(mV) |
+	 *    2     |    X1*127   | X1=0.126(AVDD-1) |   X1*3*127    |  X1*3   |
+	 *    4     |    X2*127   | X2=X1/1.3333     |   X2*3*127    |  X2*3   |
+	 *    8     |    X3*127   | X3=X1/2.301      |   X3*3*127    |  X3*3   |
+	 *    16    |    X4*127   | X4=X1/4.283      |   X4*3*127    |  X4*3   |
+	 *    32    |    X5*127   | X5=X1/8.289      |   X5*3*127    |  X5*3   |
+	 *    64    |    X6*127   | X6=X1/16.311     |   X6*3*127    |  X6*3   |
+	 *    128   |    X7*127   | X7=X1/31.599     |   X7*3*127    |  X7*3   |
+	 */
+	for (i = ADA4250_RANGE1; i <= ADA4250_RANGE4; i++) {
+		max_vos = x[st->gain] *  127 * ((1 << (i + 1)) - 1);
+		min_vos = -1 * max_vos;
+		if (offset_uv > min_vos && offset_uv < max_vos) {
+			range = i;
+			vlsb = x[st->gain] * ((1 << (i + 1)) - 1);
+			break;
+		}
+	}
+
+	if (vlsb <= 0)
+		return -EINVAL;
+
+	offset_raw = DIV_ROUND_CLOSEST(abs(offset_uv), vlsb);
+
+	mutex_lock(&st->lock);
+	ret = regmap_update_bits(st->regmap, ADA4250_REG_SNSR_CAL_CNFG,
+				 ADA4250_RANGE_SET_MSK,
+				 FIELD_PREP(ADA4250_RANGE_SET_MSK, range));
+	if (ret)
+		goto exit;
+
+	st->offset_uv = offset_raw * vlsb;
+
+	/*
+	 * To set the offset calibration value, use bits [6:0] and bit 7 as the
+	 * polarity bit (set to "0" for a negative offset and "1" for a positive
+	 * offset).
+	 */
+	if (offset_uv < 0) {
+		offset_raw |= BIT(7);
+		st->offset_uv *= (-1);
+	}
+
+	ret = regmap_write(st->regmap, ADA4250_REG_SNSR_CAL_VAL, offset_raw);
+
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ada4250_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long info)
+{
+	struct ada4250_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		ret = regmap_read(st->regmap, ADA4250_REG_GAIN_MUX, val);
+		if (ret)
+			return ret;
+
+		*val = BIT(*val);
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = st->offset_uv;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = regmap_read(st->regmap, ADA4250_REG_SNSR_CAL_CNFG, val);
+		if (ret)
+			return ret;
+
+		*val = FIELD_GET(ADA4250_BIAS_SET_MSK, *val);
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 1;
+		*val2 = 1000000;
+
+		return IIO_VAL_FRACTIONAL;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ada4250_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long info)
+{
+	struct ada4250_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		ret = regmap_write(st->regmap, ADA4250_REG_GAIN_MUX,
+				   FIELD_PREP(ADA4250_GAIN_MUX_MSK, ilog2(val)));
+		if (ret)
+			return ret;
+
+		st->gain = ilog2(val);
+
+		return ret;
+	case IIO_CHAN_INFO_OFFSET:
+		return ada4250_set_offset_uv(indio_dev, chan, val);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = regmap_update_bits(st->regmap, ADA4250_REG_SNSR_CAL_CNFG,
+					 ADA4250_BIAS_SET_MSK,
+					 FIELD_PREP(ADA4250_BIAS_SET_MSK, val));
+		if (ret)
+			return ret;
+
+		st->bias = val;
+
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ada4250_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		*vals = calibbias_table;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(calibbias_table);
+
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		*vals = hwgain_table;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(hwgain_table);
+
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ada4250_reg_access(struct iio_dev *indio_dev,
+			      unsigned int reg,
+			      unsigned int write_val,
+			      unsigned int *read_val)
+{
+	struct ada4250_state *st = iio_priv(indio_dev);
+
+	if (read_val)
+		return regmap_read(st->regmap, reg, read_val);
+	else
+		return regmap_write(st->regmap, reg, write_val);
+}
+
+static const struct iio_info ada4250_info = {
+	.read_raw = ada4250_read_raw,
+	.write_raw = ada4250_write_raw,
+	.read_avail = &ada4250_read_avail,
+	.debugfs_reg_access = &ada4250_reg_access,
+};
+
+static const struct iio_chan_spec ada4250_channels[] = {
+	{
+		.type = IIO_VOLTAGE,
+		.output = 1,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_HARDWAREGAIN) |
+				BIT(IIO_CHAN_INFO_OFFSET) |
+				BIT(IIO_CHAN_INFO_CALIBBIAS) |
+				BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_CALIBBIAS) |
+						BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+	}
+};
+
+static void ada4250_reg_disable(void *data)
+{
+	regulator_disable(data);
+}
+
+static int ada4250_init(struct ada4250_state *st)
+{
+	int ret;
+	u16 chip_id;
+	u8 data[2] __aligned(8) = {};
+	struct spi_device *spi = st->spi;
+
+	st->refbuf_en = device_property_read_bool(&spi->dev, "adi,refbuf-enable");
+
+	st->reg = devm_regulator_get(&spi->dev, "avdd");
+	if (IS_ERR(st->reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->reg),
+				     "failed to get the AVDD voltage\n");
+
+	ret = regulator_enable(st->reg);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to enable specified AVDD supply\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, ada4250_reg_disable, st->reg);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap, ADA4250_REG_RESET,
+			   FIELD_PREP(ADA4250_RESET_MSK, 1));
+	if (ret)
+		return ret;
+
+	ret = regmap_bulk_read(st->regmap, ADA4250_REG_CHIP_ID, data, 2);
+	if (ret)
+		return ret;
+
+	chip_id = get_unaligned_le16(data);
+
+	if (chip_id != ADA4250_CHIP_ID) {
+		dev_err(&spi->dev, "Invalid chip ID.\n");
+		return -EINVAL;
+	}
+
+	return regmap_write(st->regmap, ADA4250_REG_REFBUF_EN,
+			    FIELD_PREP(ADA4250_REFBUF_MSK, st->refbuf_en));
+}
+
+static int ada4250_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct regmap *regmap;
+	struct ada4250_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	regmap = devm_regmap_init_spi(spi, &ada4250_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	st = iio_priv(indio_dev);
+	st->regmap = regmap;
+	st->spi = spi;
+
+	indio_dev->info = &ada4250_info;
+	indio_dev->name = "ada4250";
+	indio_dev->channels = ada4250_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ada4250_channels);
+
+	mutex_init(&st->lock);
+
+	ret = ada4250_init(st);
+	if (ret) {
+		dev_err(&spi->dev, "ADA4250 init failed\n");
+		return ret;
+	}
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id ada4250_id[] = {
+	{ "ada4250", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ada4250_id);
+
+static const struct of_device_id ada4250_of_match[] = {
+	{ .compatible = "adi,ada4250" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ada4250_of_match);
+
+static struct spi_driver ada4250_driver = {
+	.driver = {
+			.name = "ada4250",
+			.of_match_table = ada4250_of_match,
+		},
+	.probe = ada4250_probe,
+	.id_table = ada4250_id,
+};
+module_spi_driver(ada4250_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com");
+MODULE_DESCRIPTION("Analog Devices ADA4250");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/amplifiers/hmc425a.c b/drivers/iio/amplifiers/hmc425a.c
new file mode 100644
index 000000000000..ce80e0c916f4
--- /dev/null
+++ b/drivers/iio/amplifiers/hmc425a.c
@@ -0,0 +1,244 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * HMC425A and similar Gain Amplifiers
+ *
+ * Copyright 2020 Analog Devices Inc.
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/property.h>
+#include <linux/slab.h>
+#include <linux/regulator/consumer.h>
+#include <linux/sysfs.h>
+
+enum hmc425a_type {
+	ID_HMC425A,
+};
+
+struct hmc425a_chip_info {
+	const char			*name;
+	const struct iio_chan_spec	*channels;
+	unsigned int			num_channels;
+	unsigned int			num_gpios;
+	int				gain_min;
+	int				gain_max;
+	int				default_gain;
+};
+
+struct hmc425a_state {
+	struct	regulator *reg;
+	struct	mutex lock; /* protect sensor state */
+	struct	hmc425a_chip_info *chip_info;
+	struct	gpio_descs *gpios;
+	enum	hmc425a_type type;
+	u32	gain;
+};
+
+static int hmc425a_write(struct iio_dev *indio_dev, u32 value)
+{
+	struct hmc425a_state *st = iio_priv(indio_dev);
+	DECLARE_BITMAP(values, BITS_PER_TYPE(value));
+
+	values[0] = value;
+
+	gpiod_set_array_value_cansleep(st->gpios->ndescs, st->gpios->desc,
+				       NULL, values);
+	return 0;
+}
+
+static int hmc425a_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, int *val,
+			    int *val2, long m)
+{
+	struct hmc425a_state *st = iio_priv(indio_dev);
+	int code, gain = 0;
+	int ret;
+
+	mutex_lock(&st->lock);
+	switch (m) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		code = st->gain;
+
+		switch (st->type) {
+		case ID_HMC425A:
+			gain = ~code * -500;
+			break;
+		}
+
+		*val = gain / 1000;
+		*val2 = (gain % 1000) * 1000;
+
+		ret = IIO_VAL_INT_PLUS_MICRO_DB;
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	mutex_unlock(&st->lock);
+
+	return ret;
+};
+
+static int hmc425a_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int val,
+			     int val2, long mask)
+{
+	struct hmc425a_state *st = iio_priv(indio_dev);
+	struct hmc425a_chip_info *inf = st->chip_info;
+	int code = 0, gain;
+	int ret;
+
+	if (val < 0)
+		gain = (val * 1000) - (val2 / 1000);
+	else
+		gain = (val * 1000) + (val2 / 1000);
+
+	if (gain > inf->gain_max || gain < inf->gain_min)
+		return -EINVAL;
+
+	switch (st->type) {
+	case ID_HMC425A:
+		code = ~((abs(gain) / 500) & 0x3F);
+		break;
+	}
+
+	mutex_lock(&st->lock);
+	switch (mask) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		st->gain = code;
+
+		ret = hmc425a_write(indio_dev, st->gain);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int hmc425a_write_raw_get_fmt(struct iio_dev *indio_dev,
+				     struct iio_chan_spec const *chan,
+				     long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		return IIO_VAL_INT_PLUS_MICRO_DB;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info hmc425a_info = {
+	.read_raw = &hmc425a_read_raw,
+	.write_raw = &hmc425a_write_raw,
+	.write_raw_get_fmt = &hmc425a_write_raw_get_fmt,
+};
+
+#define HMC425A_CHAN(_channel)						\
+{									\
+	.type = IIO_VOLTAGE,						\
+	.output = 1,							\
+	.indexed = 1,							\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_HARDWAREGAIN),		\
+}
+
+static const struct iio_chan_spec hmc425a_channels[] = {
+	HMC425A_CHAN(0),
+};
+
+/* Match table for of_platform binding */
+static const struct of_device_id hmc425a_of_match[] = {
+	{ .compatible = "adi,hmc425a", .data = (void *)ID_HMC425A },
+	{},
+};
+MODULE_DEVICE_TABLE(of, hmc425a_of_match);
+
+static void hmc425a_reg_disable(void *data)
+{
+	struct hmc425a_state *st = data;
+
+	regulator_disable(st->reg);
+}
+
+static struct hmc425a_chip_info hmc425a_chip_info_tbl[] = {
+	[ID_HMC425A] = {
+		.name = "hmc425a",
+		.channels = hmc425a_channels,
+		.num_channels = ARRAY_SIZE(hmc425a_channels),
+		.num_gpios = 6,
+		.gain_min = -31500,
+		.gain_max = 0,
+		.default_gain = -0x40, /* set default gain -31.5db*/
+	},
+};
+
+static int hmc425a_probe(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev;
+	struct hmc425a_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	st->type = (uintptr_t)device_get_match_data(&pdev->dev);
+
+	st->chip_info = &hmc425a_chip_info_tbl[st->type];
+	indio_dev->num_channels = st->chip_info->num_channels;
+	indio_dev->channels = st->chip_info->channels;
+	indio_dev->name = st->chip_info->name;
+	st->gain = st->chip_info->default_gain;
+
+	st->gpios = devm_gpiod_get_array(&pdev->dev, "ctrl", GPIOD_OUT_LOW);
+	if (IS_ERR(st->gpios))
+		return dev_err_probe(&pdev->dev, PTR_ERR(st->gpios),
+				     "failed to get gpios\n");
+
+	if (st->gpios->ndescs != st->chip_info->num_gpios) {
+		dev_err(&pdev->dev, "%d GPIOs needed to operate\n",
+			st->chip_info->num_gpios);
+		return -ENODEV;
+	}
+
+	st->reg = devm_regulator_get(&pdev->dev, "vcc-supply");
+	if (IS_ERR(st->reg))
+		return PTR_ERR(st->reg);
+
+	ret = regulator_enable(st->reg);
+	if (ret)
+		return ret;
+	ret = devm_add_action_or_reset(&pdev->dev, hmc425a_reg_disable, st);
+	if (ret)
+		return ret;
+
+	mutex_init(&st->lock);
+
+	indio_dev->info = &hmc425a_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	return devm_iio_device_register(&pdev->dev, indio_dev);
+}
+
+static struct platform_driver hmc425a_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = hmc425a_of_match,
+	},
+	.probe = hmc425a_probe,
+};
+module_platform_driver(hmc425a_driver);
+
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
+MODULE_DESCRIPTION("Analog Devices HMC425A and similar GPIO control Gain Amplifiers");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/buffer/Kconfig b/drivers/iio/buffer/Kconfig
index 63f265c8b466..047b931591a9 100644
--- a/drivers/iio/buffer/Kconfig
+++ b/drivers/iio/buffer/Kconfig
@@ -11,7 +11,7 @@ config IIO_BUFFER_CB
 	  usage.  That is, those where the data is pushed to the consumer.
 
 config IIO_BUFFER_DMA
-	tristate
+	tristate "Industrial I/O DMA buffer infrastructure"
 	help
 	  Provides the generic IIO DMA buffer infrastructure that can be used by
 	  drivers for devices with DMA support to implement the IIO buffer.
@@ -20,13 +20,13 @@ config IIO_BUFFER_DMA
 	  infrastructure.
 
 config IIO_BUFFER_DMAENGINE
-	tristate
+	tristate "Industrial I/O DMA buffer integration with DMAEngine"
 	select IIO_BUFFER_DMA
 	help
 	  Provides a bonding of the generic IIO DMA buffer infrastructure with the
-	  DMAengine framework. This can be used by converter drivers with a DMA port
+	  DMAEngine framework. This can be used by converter drivers with a DMA port
 	  connected to an external DMA controller which is supported by the
-	  DMAengine framework.
+	  DMAEngine framework.
 
 	  Should be selected by drivers that want to use this functionality.
 
@@ -48,7 +48,7 @@ config IIO_KFIFO_BUF
 	  often to read from the buffer.
 
 config IIO_TRIGGERED_BUFFER
-	tristate
+	tristate "Industrial I/O triggered buffer support"
 	select IIO_TRIGGER
 	select IIO_KFIFO_BUF
 	help
diff --git a/drivers/iio/buffer/industrialio-buffer-cb.c b/drivers/iio/buffer/industrialio-buffer-cb.c
index 47c96f7f4976..4c12b7a94af5 100644
--- a/drivers/iio/buffer/industrialio-buffer-cb.c
+++ b/drivers/iio/buffer/industrialio-buffer-cb.c
@@ -54,6 +54,11 @@ struct iio_cb_buffer *iio_channel_get_all_cb(struct device *dev,
 	struct iio_cb_buffer *cb_buff;
 	struct iio_channel *chan;
 
+	if (!cb) {
+		dev_err(dev, "Invalid arguments: A callback must be provided!\n");
+		return ERR_PTR(-EINVAL);
+	}
+
 	cb_buff = kzalloc(sizeof(*cb_buff), GFP_KERNEL);
 	if (cb_buff == NULL)
 		return ERR_PTR(-ENOMEM);
diff --git a/drivers/iio/buffer/industrialio-buffer-dma.c b/drivers/iio/buffer/industrialio-buffer-dma.c
index a74bd9c0587c..d348af8b9705 100644
--- a/drivers/iio/buffer/industrialio-buffer-dma.c
+++ b/drivers/iio/buffer/industrialio-buffer-dma.c
@@ -12,7 +12,6 @@
 #include <linux/mutex.h>
 #include <linux/sched.h>
 #include <linux/poll.h>
-#include <linux/iio/buffer.h>
 #include <linux/iio/buffer_impl.h>
 #include <linux/iio/buffer-dma.h>
 #include <linux/dma-mapping.h>
diff --git a/drivers/iio/buffer/industrialio-buffer-dmaengine.c b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
index b129693af0fd..f744b62a636a 100644
--- a/drivers/iio/buffer/industrialio-buffer-dmaengine.c
+++ b/drivers/iio/buffer/industrialio-buffer-dmaengine.c
@@ -45,7 +45,8 @@ static struct dmaengine_buffer *iio_buffer_to_dmaengine_buffer(
 	return container_of(buffer, struct dmaengine_buffer, queue.buffer);
 }
 
-static void iio_dmaengine_buffer_block_done(void *data)
+static void iio_dmaengine_buffer_block_done(void *data,
+		const struct dmaengine_result *result)
 {
 	struct iio_dma_buffer_block *block = data;
 	unsigned long flags;
@@ -53,6 +54,7 @@ static void iio_dmaengine_buffer_block_done(void *data)
 	spin_lock_irqsave(&block->queue->list_lock, flags);
 	list_del(&block->head);
 	spin_unlock_irqrestore(&block->queue->list_lock, flags);
+	block->bytes_used -= result->residue;
 	iio_dma_buffer_block_done(block);
 }
 
@@ -65,7 +67,7 @@ static int iio_dmaengine_buffer_submit_block(struct iio_dma_buffer_queue *queue,
 	dma_cookie_t cookie;
 
 	block->bytes_used = min(block->size, dmaengine_buffer->max_size);
-	block->bytes_used = rounddown(block->bytes_used,
+	block->bytes_used = round_down(block->bytes_used,
 			dmaengine_buffer->align);
 
 	desc = dmaengine_prep_slave_single(dmaengine_buffer->chan,
@@ -74,7 +76,7 @@ static int iio_dmaengine_buffer_submit_block(struct iio_dma_buffer_queue *queue,
 	if (!desc)
 		return -ENOMEM;
 
-	desc->callback = iio_dmaengine_buffer_block_done;
+	desc->callback_result = iio_dmaengine_buffer_block_done;
 	desc->callback_param = block;
 
 	cookie = dmaengine_submit(desc);
@@ -130,11 +132,11 @@ static const struct iio_dma_buffer_ops iio_dmaengine_default_ops = {
 static ssize_t iio_dmaengine_buffer_get_length_align(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	struct dmaengine_buffer *dmaengine_buffer =
-		iio_buffer_to_dmaengine_buffer(indio_dev->buffer);
+		iio_buffer_to_dmaengine_buffer(buffer);
 
-	return sprintf(buf, "%u\n", dmaengine_buffer->align);
+	return sysfs_emit(buf, "%zu\n", dmaengine_buffer->align);
 }
 
 static IIO_DEVICE_ATTR(length_align_bytes, 0444,
@@ -157,7 +159,7 @@ static const struct attribute *iio_dmaengine_buffer_attrs[] = {
  * Once done using the buffer iio_dmaengine_buffer_free() should be used to
  * release it.
  */
-struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev,
+static struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev,
 	const char *channel)
 {
 	struct dmaengine_buffer *dmaengine_buffer;
@@ -198,9 +200,8 @@ struct iio_buffer *iio_dmaengine_buffer_alloc(struct device *dev,
 
 	iio_dma_buffer_init(&dmaengine_buffer->queue, chan->device->dev,
 		&iio_dmaengine_default_ops);
-	iio_buffer_set_attrs(&dmaengine_buffer->queue.buffer,
-		iio_dmaengine_buffer_attrs);
 
+	dmaengine_buffer->queue.buffer.attrs = iio_dmaengine_buffer_attrs;
 	dmaengine_buffer->queue.buffer.access = &iio_dmaengine_buffer_ops;
 
 	return &dmaengine_buffer->queue.buffer;
@@ -209,7 +210,6 @@ err_free:
 	kfree(dmaengine_buffer);
 	return ERR_PTR(ret);
 }
-EXPORT_SYMBOL(iio_dmaengine_buffer_alloc);
 
 /**
  * iio_dmaengine_buffer_free() - Free dmaengine buffer
@@ -217,7 +217,7 @@ EXPORT_SYMBOL(iio_dmaengine_buffer_alloc);
  *
  * Frees a buffer previously allocated with iio_dmaengine_buffer_alloc().
  */
-void iio_dmaengine_buffer_free(struct iio_buffer *buffer)
+static void iio_dmaengine_buffer_free(struct iio_buffer *buffer)
 {
 	struct dmaengine_buffer *dmaengine_buffer =
 		iio_buffer_to_dmaengine_buffer(buffer);
@@ -227,7 +227,68 @@ void iio_dmaengine_buffer_free(struct iio_buffer *buffer)
 
 	iio_buffer_put(buffer);
 }
-EXPORT_SYMBOL_GPL(iio_dmaengine_buffer_free);
+
+static void __devm_iio_dmaengine_buffer_free(void *buffer)
+{
+	iio_dmaengine_buffer_free(buffer);
+}
+
+/**
+ * devm_iio_dmaengine_buffer_alloc() - Resource-managed iio_dmaengine_buffer_alloc()
+ * @dev: Parent device for the buffer
+ * @channel: DMA channel name, typically "rx".
+ *
+ * This allocates a new IIO buffer which internally uses the DMAengine framework
+ * to perform its transfers. The parent device will be used to request the DMA
+ * channel.
+ *
+ * The buffer will be automatically de-allocated once the device gets destroyed.
+ */
+static struct iio_buffer *devm_iio_dmaengine_buffer_alloc(struct device *dev,
+	const char *channel)
+{
+	struct iio_buffer *buffer;
+	int ret;
+
+	buffer = iio_dmaengine_buffer_alloc(dev, channel);
+	if (IS_ERR(buffer))
+		return buffer;
+
+	ret = devm_add_action_or_reset(dev, __devm_iio_dmaengine_buffer_free,
+				       buffer);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return buffer;
+}
+
+/**
+ * devm_iio_dmaengine_buffer_setup() - Setup a DMA buffer for an IIO device
+ * @dev: Parent device for the buffer
+ * @indio_dev: IIO device to which to attach this buffer.
+ * @channel: DMA channel name, typically "rx".
+ *
+ * This allocates a new IIO buffer with devm_iio_dmaengine_buffer_alloc()
+ * and attaches it to an IIO device with iio_device_attach_buffer().
+ * It also appends the INDIO_BUFFER_HARDWARE mode to the supported modes of the
+ * IIO device.
+ */
+int devm_iio_dmaengine_buffer_setup(struct device *dev,
+				    struct iio_dev *indio_dev,
+				    const char *channel)
+{
+	struct iio_buffer *buffer;
+
+	buffer = devm_iio_dmaengine_buffer_alloc(indio_dev->dev.parent,
+						 channel);
+	if (IS_ERR(buffer))
+		return PTR_ERR(buffer);
+
+	indio_dev->modes |= INDIO_BUFFER_HARDWARE;
+
+	return iio_device_attach_buffer(indio_dev, buffer);
+}
+EXPORT_SYMBOL_GPL(devm_iio_dmaengine_buffer_setup);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("DMA buffer for the IIO framework");
diff --git a/drivers/iio/buffer/industrialio-hw-consumer.c b/drivers/iio/buffer/industrialio-hw-consumer.c
index 95165697d8ae..fb58f599a80b 100644
--- a/drivers/iio/buffer/industrialio-hw-consumer.c
+++ b/drivers/iio/buffer/industrialio-hw-consumer.c
@@ -52,7 +52,6 @@ static const struct iio_buffer_access_funcs iio_hw_buf_access = {
 static struct hw_consumer_buffer *iio_hw_consumer_get_buffer(
 	struct iio_hw_consumer *hwc, struct iio_dev *indio_dev)
 {
-	size_t mask_size = BITS_TO_LONGS(indio_dev->masklength) * sizeof(long);
 	struct hw_consumer_buffer *buf;
 
 	list_for_each_entry(buf, &hwc->buffers, head) {
@@ -60,7 +59,8 @@ static struct hw_consumer_buffer *iio_hw_consumer_get_buffer(
 			return buf;
 	}
 
-	buf = kzalloc(sizeof(*buf) + mask_size, GFP_KERNEL);
+	buf = kzalloc(struct_size(buf, scan_mask, BITS_TO_LONGS(indio_dev->masklength)),
+		      GFP_KERNEL);
 	if (!buf)
 		return NULL;
 
@@ -137,20 +137,9 @@ void iio_hw_consumer_free(struct iio_hw_consumer *hwc)
 }
 EXPORT_SYMBOL_GPL(iio_hw_consumer_free);
 
-static void devm_iio_hw_consumer_release(struct device *dev, void *res)
+static void devm_iio_hw_consumer_release(void *iio_hwc)
 {
-	iio_hw_consumer_free(*(struct iio_hw_consumer **)res);
-}
-
-static int devm_iio_hw_consumer_match(struct device *dev, void *res, void *data)
-{
-	struct iio_hw_consumer **r = res;
-
-	if (!r || !*r) {
-		WARN_ON(!r || !*r);
-		return 0;
-	}
-	return *r == data;
+	iio_hw_consumer_free(iio_hwc);
 }
 
 /**
@@ -160,50 +149,27 @@ static int devm_iio_hw_consumer_match(struct device *dev, void *res, void *data)
  * Managed iio_hw_consumer_alloc. iio_hw_consumer allocated with this function
  * is automatically freed on driver detach.
  *
- * If an iio_hw_consumer allocated with this function needs to be freed
- * separately, devm_iio_hw_consumer_free() must be used.
- *
  * returns pointer to allocated iio_hw_consumer on success, NULL on failure.
  */
 struct iio_hw_consumer *devm_iio_hw_consumer_alloc(struct device *dev)
 {
-	struct iio_hw_consumer **ptr, *iio_hwc;
-
-	ptr = devres_alloc(devm_iio_hw_consumer_release, sizeof(*ptr),
-			   GFP_KERNEL);
-	if (!ptr)
-		return NULL;
+	struct iio_hw_consumer *iio_hwc;
+	int ret;
 
 	iio_hwc = iio_hw_consumer_alloc(dev);
-	if (IS_ERR(iio_hwc)) {
-		devres_free(ptr);
-	} else {
-		*ptr = iio_hwc;
-		devres_add(dev, ptr);
-	}
+	if (IS_ERR(iio_hwc))
+		return iio_hwc;
+
+	ret = devm_add_action_or_reset(dev, devm_iio_hw_consumer_release,
+				       iio_hwc);
+	if (ret)
+		return ERR_PTR(ret);
 
 	return iio_hwc;
 }
 EXPORT_SYMBOL_GPL(devm_iio_hw_consumer_alloc);
 
 /**
- * devm_iio_hw_consumer_free - Resource-managed iio_hw_consumer_free()
- * @dev: Pointer to consumer device.
- * @hwc: iio_hw_consumer to free.
- *
- * Free iio_hw_consumer allocated with devm_iio_hw_consumer_alloc().
- */
-void devm_iio_hw_consumer_free(struct device *dev, struct iio_hw_consumer *hwc)
-{
-	int rc;
-
-	rc = devres_release(dev, devm_iio_hw_consumer_release,
-			    devm_iio_hw_consumer_match, hwc);
-	WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_iio_hw_consumer_free);
-
-/**
  * iio_hw_consumer_enable() - Enable IIO hardware consumer
  * @hwc: iio_hw_consumer to enable.
  *
diff --git a/drivers/iio/buffer/industrialio-triggered-buffer.c b/drivers/iio/buffer/industrialio-triggered-buffer.c
index cb322b2f09cd..8d4fc97d1005 100644
--- a/drivers/iio/buffer/industrialio-triggered-buffer.c
+++ b/drivers/iio/buffer/industrialio-triggered-buffer.c
@@ -9,23 +9,21 @@
 #include <linux/module.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
+#include <linux/iio/buffer_impl.h>
 #include <linux/iio/kfifo_buf.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 
-static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
-	.postenable = &iio_triggered_buffer_postenable,
-	.predisable = &iio_triggered_buffer_predisable,
-};
-
 /**
- * iio_triggered_buffer_setup() - Setup triggered buffer and pollfunc
+ * iio_triggered_buffer_setup_ext() - Setup triggered buffer and pollfunc
  * @indio_dev:		IIO device structure
  * @h:			Function which will be used as pollfunc top half
  * @thread:		Function which will be used as pollfunc bottom half
+ * @direction:		Direction of the data stream (in/out).
  * @setup_ops:		Buffer setup functions to use for this device.
  *			If NULL the default setup functions for triggered
  *			buffers will be used.
+ * @buffer_attrs:	Extra sysfs buffer attributes for this IIO buffer
  *
  * This function combines some common tasks which will normally be performed
  * when setting up a triggered buffer. It will allocate the buffer and the
@@ -38,10 +36,12 @@ static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
  * To free the resources allocated by this function call
  * iio_triggered_buffer_cleanup().
  */
-int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
+int iio_triggered_buffer_setup_ext(struct iio_dev *indio_dev,
 	irqreturn_t (*h)(int irq, void *p),
 	irqreturn_t (*thread)(int irq, void *p),
-	const struct iio_buffer_setup_ops *setup_ops)
+	enum iio_buffer_direction direction,
+	const struct iio_buffer_setup_ops *setup_ops,
+	const struct attribute **buffer_attrs)
 {
 	struct iio_buffer *buffer;
 	int ret;
@@ -52,40 +52,44 @@ int iio_triggered_buffer_setup(struct iio_dev *indio_dev,
 		goto error_ret;
 	}
 
-	iio_device_attach_buffer(indio_dev, buffer);
-
 	indio_dev->pollfunc = iio_alloc_pollfunc(h,
 						 thread,
 						 IRQF_ONESHOT,
 						 indio_dev,
 						 "%s_consumer%d",
 						 indio_dev->name,
-						 indio_dev->id);
+						 iio_device_id(indio_dev));
 	if (indio_dev->pollfunc == NULL) {
 		ret = -ENOMEM;
 		goto error_kfifo_free;
 	}
 
 	/* Ring buffer functions - here trigger setup related */
-	if (setup_ops)
-		indio_dev->setup_ops = setup_ops;
-	else
-		indio_dev->setup_ops = &iio_triggered_buffer_setup_ops;
+	indio_dev->setup_ops = setup_ops;
 
 	/* Flag that polled ring buffering is possible */
 	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
 
+	buffer->direction = direction;
+	buffer->attrs = buffer_attrs;
+
+	ret = iio_device_attach_buffer(indio_dev, buffer);
+	if (ret < 0)
+		goto error_dealloc_pollfunc;
+
 	return 0;
 
+error_dealloc_pollfunc:
+	iio_dealloc_pollfunc(indio_dev->pollfunc);
 error_kfifo_free:
-	iio_kfifo_free(indio_dev->buffer);
+	iio_kfifo_free(buffer);
 error_ret:
 	return ret;
 }
-EXPORT_SYMBOL(iio_triggered_buffer_setup);
+EXPORT_SYMBOL(iio_triggered_buffer_setup_ext);
 
 /**
- * iio_triggered_buffer_cleanup() - Free resources allocated by iio_triggered_buffer_setup()
+ * iio_triggered_buffer_cleanup() - Free resources allocated by iio_triggered_buffer_setup_ext()
  * @indio_dev: IIO device structure
  */
 void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev)
@@ -95,47 +99,30 @@ void iio_triggered_buffer_cleanup(struct iio_dev *indio_dev)
 }
 EXPORT_SYMBOL(iio_triggered_buffer_cleanup);
 
-static void devm_iio_triggered_buffer_clean(struct device *dev, void *res)
+static void devm_iio_triggered_buffer_clean(void *indio_dev)
 {
-	iio_triggered_buffer_cleanup(*(struct iio_dev **)res);
+	iio_triggered_buffer_cleanup(indio_dev);
 }
 
-int devm_iio_triggered_buffer_setup(struct device *dev,
-				    struct iio_dev *indio_dev,
-				    irqreturn_t (*h)(int irq, void *p),
-				    irqreturn_t (*thread)(int irq, void *p),
-				    const struct iio_buffer_setup_ops *ops)
+int devm_iio_triggered_buffer_setup_ext(struct device *dev,
+					struct iio_dev *indio_dev,
+					irqreturn_t (*h)(int irq, void *p),
+					irqreturn_t (*thread)(int irq, void *p),
+					enum iio_buffer_direction direction,
+					const struct iio_buffer_setup_ops *ops,
+					const struct attribute **buffer_attrs)
 {
-	struct iio_dev **ptr;
 	int ret;
 
-	ptr = devres_alloc(devm_iio_triggered_buffer_clean, sizeof(*ptr),
-			   GFP_KERNEL);
-	if (!ptr)
-		return -ENOMEM;
-
-	*ptr = indio_dev;
-
-	ret = iio_triggered_buffer_setup(indio_dev, h, thread, ops);
-	if (!ret)
-		devres_add(dev, ptr);
-	else
-		devres_free(ptr);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(devm_iio_triggered_buffer_setup);
-
-void devm_iio_triggered_buffer_cleanup(struct device *dev,
-				       struct iio_dev *indio_dev)
-{
-	int rc;
+	ret = iio_triggered_buffer_setup_ext(indio_dev, h, thread, direction,
+					     ops, buffer_attrs);
+	if (ret)
+		return ret;
 
-	rc = devres_release(dev, devm_iio_triggered_buffer_clean,
-			    devm_iio_device_match, indio_dev);
-	WARN_ON(rc);
+	return devm_add_action_or_reset(dev, devm_iio_triggered_buffer_clean,
+					indio_dev);
 }
-EXPORT_SYMBOL_GPL(devm_iio_triggered_buffer_cleanup);
+EXPORT_SYMBOL_GPL(devm_iio_triggered_buffer_setup_ext);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("IIO helper functions for setting up triggered buffers");
diff --git a/drivers/iio/buffer/kfifo_buf.c b/drivers/iio/buffer/kfifo_buf.c
index 3150f8ab984b..35d8b4077376 100644
--- a/drivers/iio/buffer/kfifo_buf.c
+++ b/drivers/iio/buffer/kfifo_buf.c
@@ -138,10 +138,60 @@ static void iio_kfifo_buffer_release(struct iio_buffer *buffer)
 	kfree(kf);
 }
 
+static size_t iio_kfifo_buf_space_available(struct iio_buffer *r)
+{
+	struct iio_kfifo *kf = iio_to_kfifo(r);
+	size_t avail;
+
+	mutex_lock(&kf->user_lock);
+	avail = kfifo_avail(&kf->kf);
+	mutex_unlock(&kf->user_lock);
+
+	return avail;
+}
+
+static int iio_kfifo_remove_from(struct iio_buffer *r, void *data)
+{
+	int ret;
+	struct iio_kfifo *kf = iio_to_kfifo(r);
+
+	if (kfifo_size(&kf->kf) < 1)
+		return -EBUSY;
+
+	ret = kfifo_out(&kf->kf, data, 1);
+	if (ret != 1)
+		return -EBUSY;
+
+	wake_up_interruptible_poll(&r->pollq, EPOLLOUT | EPOLLWRNORM);
+
+	return 0;
+}
+
+static int iio_kfifo_write(struct iio_buffer *r, size_t n,
+	const char __user *buf)
+{
+	struct iio_kfifo *kf = iio_to_kfifo(r);
+	int ret, copied;
+
+	mutex_lock(&kf->user_lock);
+	if (!kfifo_initialized(&kf->kf) || n < kfifo_esize(&kf->kf))
+		ret = -EINVAL;
+	else
+		ret = kfifo_from_user(&kf->kf, buf, n, &copied);
+	mutex_unlock(&kf->user_lock);
+	if (ret)
+		return ret;
+
+	return copied;
+}
+
 static const struct iio_buffer_access_funcs kfifo_access_funcs = {
 	.store_to = &iio_store_to_kfifo,
 	.read = &iio_read_kfifo,
 	.data_available = iio_kfifo_buf_data_available,
+	.remove_from = &iio_kfifo_remove_from,
+	.write = &iio_kfifo_write,
+	.space_available = &iio_kfifo_buf_space_available,
 	.request_update = &iio_request_update_kfifo,
 	.set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
 	.set_length = &iio_set_length_kfifo,
@@ -179,24 +229,14 @@ static void devm_iio_kfifo_release(struct device *dev, void *res)
 	iio_kfifo_free(*(struct iio_buffer **)res);
 }
 
-static int devm_iio_kfifo_match(struct device *dev, void *res, void *data)
-{
-	struct iio_buffer **r = res;
-
-	if (WARN_ON(!r || !*r))
-		return 0;
-
-	return *r == data;
-}
-
 /**
- * devm_iio_fifo_allocate - Resource-managed iio_kfifo_allocate()
+ * devm_iio_kfifo_allocate - Resource-managed iio_kfifo_allocate()
  * @dev:		Device to allocate kfifo buffer for
  *
  * RETURNS:
  * Pointer to allocated iio_buffer on success, NULL on failure.
  */
-struct iio_buffer *devm_iio_kfifo_allocate(struct device *dev)
+static struct iio_buffer *devm_iio_kfifo_allocate(struct device *dev)
 {
 	struct iio_buffer **ptr, *r;
 
@@ -214,18 +254,37 @@ struct iio_buffer *devm_iio_kfifo_allocate(struct device *dev)
 
 	return r;
 }
-EXPORT_SYMBOL(devm_iio_kfifo_allocate);
 
 /**
- * devm_iio_fifo_free - Resource-managed iio_kfifo_free()
- * @dev:		Device the buffer belongs to
- * @r:			The buffer associated with the device
+ * devm_iio_kfifo_buffer_setup_ext - Allocate a kfifo buffer & attach it to an IIO device
+ * @dev: Device object to which to attach the life-time of this kfifo buffer
+ * @indio_dev: The device the buffer should be attached to
+ * @setup_ops: The setup_ops required to configure the HW part of the buffer (optional)
+ * @buffer_attrs: Extra sysfs buffer attributes for this IIO buffer
+ *
+ * This function allocates a kfifo buffer via devm_iio_kfifo_allocate() and
+ * attaches it to the IIO device via iio_device_attach_buffer().
+ * This is meant to be a bit of a short-hand/helper function as there are a few
+ * drivers that seem to do this.
  */
-void devm_iio_kfifo_free(struct device *dev, struct iio_buffer *r)
+int devm_iio_kfifo_buffer_setup_ext(struct device *dev,
+				    struct iio_dev *indio_dev,
+				    const struct iio_buffer_setup_ops *setup_ops,
+				    const struct attribute **buffer_attrs)
 {
-	WARN_ON(devres_release(dev, devm_iio_kfifo_release,
-			       devm_iio_kfifo_match, r));
+	struct iio_buffer *buffer;
+
+	buffer = devm_iio_kfifo_allocate(dev);
+	if (!buffer)
+		return -ENOMEM;
+
+	indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
+	indio_dev->setup_ops = setup_ops;
+
+	buffer->attrs = buffer_attrs;
+
+	return iio_device_attach_buffer(indio_dev, buffer);
 }
-EXPORT_SYMBOL(devm_iio_kfifo_free);
+EXPORT_SYMBOL_GPL(devm_iio_kfifo_buffer_setup_ext);
 
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/cdc/Kconfig b/drivers/iio/cdc/Kconfig
new file mode 100644
index 000000000000..e0a5ce66a984
--- /dev/null
+++ b/drivers/iio/cdc/Kconfig
@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# CDC drivers
+#
+menu "Capacitance to digital converters"
+
+config AD7150
+	tristate "Analog Devices ad7150/1/6 capacitive sensor driver"
+	depends on I2C
+	help
+	  Say yes here to build support for Analog Devices capacitive sensors.
+	  (ad7150, ad7151, ad7156) Provides direct access via sysfs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7150.
+
+config AD7746
+	tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver"
+	depends on I2C
+	help
+	  Say yes here to build support for Analog Devices capacitive sensors.
+	  (AD7745, AD7746, AD7747) Provides direct access via sysfs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7746.
+
+endmenu
diff --git a/drivers/iio/cdc/Makefile b/drivers/iio/cdc/Makefile
new file mode 100644
index 000000000000..41db756d8020
--- /dev/null
+++ b/drivers/iio/cdc/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for industrial I/O capacitance to digital converter (CDC) drivers
+#
+
+obj-$(CONFIG_AD7150) += ad7150.o
+obj-$(CONFIG_AD7746) += ad7746.o
diff --git a/drivers/iio/cdc/ad7150.c b/drivers/iio/cdc/ad7150.c
new file mode 100644
index 000000000000..ebe112b4618b
--- /dev/null
+++ b/drivers/iio/cdc/ad7150.c
@@ -0,0 +1,673 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AD7150 capacitive sensor driver supporting AD7150/1/6
+ *
+ * Copyright 2010-2011 Analog Devices Inc.
+ * Copyright 2021 Jonathan Cameron <Jonathan.Cameron@huawei.com>
+ */
+
+#include <linux/bitfield.h>
+#include <linux/device.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
+
+#define AD7150_STATUS_REG		0
+#define   AD7150_STATUS_OUT1		BIT(3)
+#define   AD7150_STATUS_OUT2		BIT(5)
+#define AD7150_CH1_DATA_HIGH_REG	1
+#define AD7150_CH2_DATA_HIGH_REG	3
+#define AD7150_CH1_AVG_HIGH_REG		5
+#define AD7150_CH2_AVG_HIGH_REG		7
+#define AD7150_CH1_SENSITIVITY_REG	9
+#define AD7150_CH1_THR_HOLD_H_REG	9
+#define AD7150_CH1_TIMEOUT_REG		10
+#define   AD7150_CH_TIMEOUT_RECEDING	GENMASK(3, 0)
+#define   AD7150_CH_TIMEOUT_APPROACHING	GENMASK(7, 4)
+#define AD7150_CH1_SETUP_REG		11
+#define AD7150_CH2_SENSITIVITY_REG	12
+#define AD7150_CH2_THR_HOLD_H_REG	12
+#define AD7150_CH2_TIMEOUT_REG		13
+#define AD7150_CH2_SETUP_REG		14
+#define AD7150_CFG_REG			15
+#define   AD7150_CFG_FIX		BIT(7)
+#define   AD7150_CFG_THRESHTYPE_MSK	GENMASK(6, 5)
+#define   AD7150_CFG_TT_NEG		0x0
+#define   AD7150_CFG_TT_POS		0x1
+#define   AD7150_CFG_TT_IN_WINDOW	0x2
+#define   AD7150_CFG_TT_OUT_WINDOW	0x3
+#define AD7150_PD_TIMER_REG		16
+#define AD7150_CH1_CAPDAC_REG		17
+#define AD7150_CH2_CAPDAC_REG		18
+#define AD7150_SN3_REG			19
+#define AD7150_SN2_REG			20
+#define AD7150_SN1_REG			21
+#define AD7150_SN0_REG			22
+#define AD7150_ID_REG			23
+
+enum {
+	AD7150,
+	AD7151,
+};
+
+/**
+ * struct ad7150_chip_info - instance specific chip data
+ * @client: i2c client for this device
+ * @threshold: thresholds for simple capacitance value events
+ * @thresh_sensitivity: threshold for simple capacitance offset
+ *	from 'average' value.
+ * @thresh_timeout: a timeout, in samples from the moment an
+ *	adaptive threshold event occurs to when the average
+ *	value jumps to current value.  Note made up of two fields,
+ *      3:0 are for timeout receding - applies if below lower threshold
+ *      7:4 are for timeout approaching - applies if above upper threshold
+ * @state_lock: ensure consistent state of this structure wrt the
+ *	hardware.
+ * @interrupts: one or two interrupt numbers depending on device type.
+ * @int_enabled: is a given interrupt currently enabled.
+ * @type: threshold type
+ * @dir: threshold direction
+ */
+struct ad7150_chip_info {
+	struct i2c_client *client;
+	u16 threshold[2][2];
+	u8 thresh_sensitivity[2][2];
+	u8 thresh_timeout[2][2];
+	struct mutex state_lock;
+	int interrupts[2];
+	bool int_enabled[2];
+	enum iio_event_type type;
+	enum iio_event_direction dir;
+};
+
+static const u8 ad7150_addresses[][6] = {
+	{ AD7150_CH1_DATA_HIGH_REG, AD7150_CH1_AVG_HIGH_REG,
+	  AD7150_CH1_SETUP_REG, AD7150_CH1_THR_HOLD_H_REG,
+	  AD7150_CH1_SENSITIVITY_REG, AD7150_CH1_TIMEOUT_REG },
+	{ AD7150_CH2_DATA_HIGH_REG, AD7150_CH2_AVG_HIGH_REG,
+	  AD7150_CH2_SETUP_REG, AD7150_CH2_THR_HOLD_H_REG,
+	  AD7150_CH2_SENSITIVITY_REG, AD7150_CH2_TIMEOUT_REG },
+};
+
+static int ad7150_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long mask)
+{
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	int channel = chan->channel;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = i2c_smbus_read_word_swapped(chip->client,
+						  ad7150_addresses[channel][0]);
+		if (ret < 0)
+			return ret;
+		*val = ret >> 4;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_AVERAGE_RAW:
+		ret = i2c_smbus_read_word_swapped(chip->client,
+						  ad7150_addresses[channel][1]);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		/*
+		 * Base units for capacitance are nano farads and the value
+		 * calculated from the datasheet formula is in picofarad
+		 * so multiply by 1000
+		 */
+		*val = 1000;
+		*val2 = 40944 >> 4; /* To match shift in _RAW */
+		return IIO_VAL_FRACTIONAL;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = -(12288 >> 4); /* To match shift in _RAW */
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		/* Strangely same for both 1 and 2 chan parts */
+		*val = 100;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7150_read_event_config(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir)
+{
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	u8 threshtype;
+	bool thrfixed;
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(chip->client, AD7150_CFG_REG);
+	if (ret < 0)
+		return ret;
+
+	threshtype = FIELD_GET(AD7150_CFG_THRESHTYPE_MSK, ret);
+
+	/*check if threshold mode is fixed or adaptive*/
+	thrfixed = FIELD_GET(AD7150_CFG_FIX, ret);
+
+	switch (type) {
+	case IIO_EV_TYPE_THRESH_ADAPTIVE:
+		if (dir == IIO_EV_DIR_RISING)
+			return !thrfixed && (threshtype == AD7150_CFG_TT_POS);
+		return !thrfixed && (threshtype == AD7150_CFG_TT_NEG);
+	case IIO_EV_TYPE_THRESH:
+		if (dir == IIO_EV_DIR_RISING)
+			return thrfixed && (threshtype == AD7150_CFG_TT_POS);
+		return thrfixed && (threshtype == AD7150_CFG_TT_NEG);
+	default:
+		break;
+	}
+	return -EINVAL;
+}
+
+/* state_lock should be held to ensure consistent state */
+static int ad7150_write_event_params(struct iio_dev *indio_dev,
+				     unsigned int chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir)
+{
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	int rising = (dir == IIO_EV_DIR_RISING);
+
+	/* Only update value live, if parameter is in use */
+	if ((type != chip->type) || (dir != chip->dir))
+		return 0;
+
+	switch (type) {
+		/* Note completely different from the adaptive versions */
+	case IIO_EV_TYPE_THRESH: {
+		u16 value = chip->threshold[rising][chan];
+		return i2c_smbus_write_word_swapped(chip->client,
+						    ad7150_addresses[chan][3],
+						    value);
+	}
+	case IIO_EV_TYPE_THRESH_ADAPTIVE: {
+		int ret;
+		u8 sens, timeout;
+
+		sens = chip->thresh_sensitivity[rising][chan];
+		ret = i2c_smbus_write_byte_data(chip->client,
+						ad7150_addresses[chan][4],
+						sens);
+		if (ret)
+			return ret;
+
+		/*
+		 * Single timeout register contains timeouts for both
+		 * directions.
+		 */
+		timeout = FIELD_PREP(AD7150_CH_TIMEOUT_APPROACHING,
+				     chip->thresh_timeout[1][chan]);
+		timeout |= FIELD_PREP(AD7150_CH_TIMEOUT_RECEDING,
+				      chip->thresh_timeout[0][chan]);
+		return i2c_smbus_write_byte_data(chip->client,
+						 ad7150_addresses[chan][5],
+						 timeout);
+	}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7150_write_event_config(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir, int state)
+{
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	int ret = 0;
+
+	/*
+	 * There is only a single shared control and no on chip
+	 * interrupt disables for the two interrupt lines.
+	 * So, enabling will switch the events configured to enable
+	 * whatever was most recently requested and if necessary enable_irq()
+	 * the interrupt and any disable will disable_irq() for that
+	 * channels interrupt.
+	 */
+	if (!state) {
+		if ((chip->int_enabled[chan->channel]) &&
+		    (type == chip->type) && (dir == chip->dir)) {
+			disable_irq(chip->interrupts[chan->channel]);
+			chip->int_enabled[chan->channel] = false;
+		}
+		return 0;
+	}
+
+	mutex_lock(&chip->state_lock);
+	if ((type != chip->type) || (dir != chip->dir)) {
+		int rising = (dir == IIO_EV_DIR_RISING);
+		u8 thresh_type, cfg, fixed;
+
+		/*
+		 * Need to temporarily disable both interrupts if
+		 * enabled - this is to avoid races around changing
+		 * config and thresholds.
+		 * Note enable/disable_irq() are reference counted so
+		 * no need to check if already enabled.
+		 */
+		disable_irq(chip->interrupts[0]);
+		disable_irq(chip->interrupts[1]);
+
+		ret = i2c_smbus_read_byte_data(chip->client, AD7150_CFG_REG);
+		if (ret < 0)
+			goto error_ret;
+
+		cfg = ret & ~(AD7150_CFG_THRESHTYPE_MSK | AD7150_CFG_FIX);
+
+		if (type == IIO_EV_TYPE_THRESH_ADAPTIVE)
+			fixed = 0;
+		else
+			fixed = 1;
+
+		if (rising)
+			thresh_type = AD7150_CFG_TT_POS;
+		else
+			thresh_type = AD7150_CFG_TT_NEG;
+
+		cfg |= FIELD_PREP(AD7150_CFG_FIX, fixed) |
+			FIELD_PREP(AD7150_CFG_THRESHTYPE_MSK, thresh_type);
+
+		ret = i2c_smbus_write_byte_data(chip->client, AD7150_CFG_REG,
+						cfg);
+		if (ret < 0)
+			goto error_ret;
+
+		/*
+		 * There is a potential race condition here, but not easy
+		 * to close given we can't disable the interrupt at the
+		 * chip side of things. Rely on the status bit.
+		 */
+		chip->type = type;
+		chip->dir = dir;
+
+		/* update control attributes */
+		ret = ad7150_write_event_params(indio_dev, chan->channel, type,
+						dir);
+		if (ret)
+			goto error_ret;
+		/* reenable any irq's we disabled whilst changing mode */
+		enable_irq(chip->interrupts[0]);
+		enable_irq(chip->interrupts[1]);
+	}
+	if (!chip->int_enabled[chan->channel]) {
+		enable_irq(chip->interrupts[chan->channel]);
+		chip->int_enabled[chan->channel] = true;
+	}
+
+error_ret:
+	mutex_unlock(&chip->state_lock);
+
+	return ret;
+}
+
+static int ad7150_read_event_value(struct iio_dev *indio_dev,
+				   const struct iio_chan_spec *chan,
+				   enum iio_event_type type,
+				   enum iio_event_direction dir,
+				   enum iio_event_info info,
+				   int *val, int *val2)
+{
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	int rising = (dir == IIO_EV_DIR_RISING);
+
+	/* Complex register sharing going on here */
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (type) {
+		case IIO_EV_TYPE_THRESH_ADAPTIVE:
+			*val = chip->thresh_sensitivity[rising][chan->channel];
+			return IIO_VAL_INT;
+		case IIO_EV_TYPE_THRESH:
+			*val = chip->threshold[rising][chan->channel];
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_TIMEOUT:
+		*val = 0;
+		*val2 = chip->thresh_timeout[rising][chan->channel] * 10000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7150_write_event_value(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir,
+				    enum iio_event_info info,
+				    int val, int val2)
+{
+	int ret;
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	int rising = (dir == IIO_EV_DIR_RISING);
+
+	mutex_lock(&chip->state_lock);
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (type) {
+		case IIO_EV_TYPE_THRESH_ADAPTIVE:
+			chip->thresh_sensitivity[rising][chan->channel] = val;
+			break;
+		case IIO_EV_TYPE_THRESH:
+			chip->threshold[rising][chan->channel] = val;
+			break;
+		default:
+			ret = -EINVAL;
+			goto error_ret;
+		}
+		break;
+	case IIO_EV_INFO_TIMEOUT: {
+		/*
+		 * Raw timeout is in cycles of 10 msecs as long as both
+		 * channels are enabled.
+		 * In terms of INT_PLUS_MICRO, that is in units of 10,000
+		 */
+		int timeout = val2 / 10000;
+
+		if (val != 0 || timeout < 0 || timeout > 15 || val2 % 10000) {
+			ret = -EINVAL;
+			goto error_ret;
+		}
+
+		chip->thresh_timeout[rising][chan->channel] = timeout;
+		break;
+	}
+	default:
+		ret = -EINVAL;
+		goto error_ret;
+	}
+
+	/* write back if active */
+	ret = ad7150_write_event_params(indio_dev, chan->channel, type, dir);
+
+error_ret:
+	mutex_unlock(&chip->state_lock);
+	return ret;
+}
+
+static const struct iio_event_spec ad7150_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH_ADAPTIVE,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE) |
+			BIT(IIO_EV_INFO_TIMEOUT),
+	}, {
+		.type = IIO_EV_TYPE_THRESH_ADAPTIVE,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
+			BIT(IIO_EV_INFO_ENABLE) |
+			BIT(IIO_EV_INFO_TIMEOUT),
+	},
+};
+
+#define AD7150_CAPACITANCE_CHAN(_chan)	{			\
+		.type = IIO_CAPACITANCE,			\
+		.indexed = 1,					\
+		.channel = _chan,				\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
+		BIT(IIO_CHAN_INFO_AVERAGE_RAW),			\
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+			BIT(IIO_CHAN_INFO_OFFSET),		\
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),\
+		.event_spec = ad7150_events,			\
+		.num_event_specs = ARRAY_SIZE(ad7150_events),	\
+	}
+
+#define AD7150_CAPACITANCE_CHAN_NO_IRQ(_chan)	{		\
+		.type = IIO_CAPACITANCE,			\
+		.indexed = 1,					\
+		.channel = _chan,				\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |	\
+		BIT(IIO_CHAN_INFO_AVERAGE_RAW),			\
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
+			BIT(IIO_CHAN_INFO_OFFSET),		\
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),\
+	}
+
+static const struct iio_chan_spec ad7150_channels[] = {
+	AD7150_CAPACITANCE_CHAN(0),
+	AD7150_CAPACITANCE_CHAN(1),
+};
+
+static const struct iio_chan_spec ad7150_channels_no_irq[] = {
+	AD7150_CAPACITANCE_CHAN_NO_IRQ(0),
+	AD7150_CAPACITANCE_CHAN_NO_IRQ(1),
+};
+
+static const struct iio_chan_spec ad7151_channels[] = {
+	AD7150_CAPACITANCE_CHAN(0),
+};
+
+static const struct iio_chan_spec ad7151_channels_no_irq[] = {
+	AD7150_CAPACITANCE_CHAN_NO_IRQ(0),
+};
+
+static irqreturn_t __ad7150_event_handler(void *private, u8 status_mask,
+					  int channel)
+{
+	struct iio_dev *indio_dev = private;
+	struct ad7150_chip_info *chip = iio_priv(indio_dev);
+	s64 timestamp = iio_get_time_ns(indio_dev);
+	int int_status;
+
+	int_status = i2c_smbus_read_byte_data(chip->client, AD7150_STATUS_REG);
+	if (int_status < 0)
+		return IRQ_HANDLED;
+
+	if (!(int_status & status_mask))
+		return IRQ_HANDLED;
+
+	iio_push_event(indio_dev,
+		       IIO_UNMOD_EVENT_CODE(IIO_CAPACITANCE, channel,
+					    chip->type, chip->dir),
+		       timestamp);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t ad7150_event_handler_ch1(int irq, void *private)
+{
+	return __ad7150_event_handler(private, AD7150_STATUS_OUT1, 0);
+}
+
+static irqreturn_t ad7150_event_handler_ch2(int irq, void *private)
+{
+	return __ad7150_event_handler(private, AD7150_STATUS_OUT2, 1);
+}
+
+static IIO_CONST_ATTR(in_capacitance_thresh_adaptive_timeout_available,
+		      "[0 0.01 0.15]");
+
+static struct attribute *ad7150_event_attributes[] = {
+	&iio_const_attr_in_capacitance_thresh_adaptive_timeout_available
+	.dev_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group ad7150_event_attribute_group = {
+	.attrs = ad7150_event_attributes,
+	.name = "events",
+};
+
+static const struct iio_info ad7150_info = {
+	.event_attrs = &ad7150_event_attribute_group,
+	.read_raw = &ad7150_read_raw,
+	.read_event_config = &ad7150_read_event_config,
+	.write_event_config = &ad7150_write_event_config,
+	.read_event_value = &ad7150_read_event_value,
+	.write_event_value = &ad7150_write_event_value,
+};
+
+static const struct iio_info ad7150_info_no_irq = {
+	.read_raw = &ad7150_read_raw,
+};
+
+static void ad7150_reg_disable(void *data)
+{
+	struct regulator *reg = data;
+
+	regulator_disable(reg);
+}
+
+static int ad7150_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct ad7150_chip_info *chip;
+	struct iio_dev *indio_dev;
+	struct regulator *reg;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	chip = iio_priv(indio_dev);
+	mutex_init(&chip->state_lock);
+	chip->client = client;
+
+	indio_dev->name = id->name;
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	reg = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(reg))
+		return PTR_ERR(reg);
+
+	ret = regulator_enable(reg);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, ad7150_reg_disable, reg);
+	if (ret)
+		return ret;
+
+	chip->interrupts[0] = fwnode_irq_get(dev_fwnode(&client->dev), 0);
+	if (chip->interrupts[0] < 0)
+		return chip->interrupts[0];
+	if (id->driver_data == AD7150) {
+		chip->interrupts[1] = fwnode_irq_get(dev_fwnode(&client->dev), 1);
+		if (chip->interrupts[1] < 0)
+			return chip->interrupts[1];
+	}
+	if (chip->interrupts[0] &&
+	    (id->driver_data == AD7151 || chip->interrupts[1])) {
+		irq_set_status_flags(chip->interrupts[0], IRQ_NOAUTOEN);
+		ret = devm_request_threaded_irq(&client->dev,
+						chip->interrupts[0],
+						NULL,
+						&ad7150_event_handler_ch1,
+						IRQF_TRIGGER_RISING |
+						IRQF_ONESHOT,
+						"ad7150_irq1",
+						indio_dev);
+		if (ret)
+			return ret;
+
+		indio_dev->info = &ad7150_info;
+		switch (id->driver_data) {
+		case AD7150:
+			indio_dev->channels = ad7150_channels;
+			indio_dev->num_channels = ARRAY_SIZE(ad7150_channels);
+			irq_set_status_flags(chip->interrupts[1], IRQ_NOAUTOEN);
+			ret = devm_request_threaded_irq(&client->dev,
+							chip->interrupts[1],
+							NULL,
+							&ad7150_event_handler_ch2,
+							IRQF_TRIGGER_RISING |
+							IRQF_ONESHOT,
+							"ad7150_irq2",
+							indio_dev);
+			if (ret)
+				return ret;
+			break;
+		case AD7151:
+			indio_dev->channels = ad7151_channels;
+			indio_dev->num_channels = ARRAY_SIZE(ad7151_channels);
+			break;
+		default:
+			return -EINVAL;
+		}
+
+	} else {
+		indio_dev->info = &ad7150_info_no_irq;
+		switch (id->driver_data) {
+		case AD7150:
+			indio_dev->channels = ad7150_channels_no_irq;
+			indio_dev->num_channels =
+				ARRAY_SIZE(ad7150_channels_no_irq);
+			break;
+		case AD7151:
+			indio_dev->channels = ad7151_channels_no_irq;
+			indio_dev->num_channels =
+				ARRAY_SIZE(ad7151_channels_no_irq);
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return devm_iio_device_register(indio_dev->dev.parent, indio_dev);
+}
+
+static const struct i2c_device_id ad7150_id[] = {
+	{ "ad7150", AD7150 },
+	{ "ad7151", AD7151 },
+	{ "ad7156", AD7150 },
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, ad7150_id);
+
+static const struct of_device_id ad7150_of_match[] = {
+	{ "adi,ad7150" },
+	{ "adi,ad7151" },
+	{ "adi,ad7156" },
+	{}
+};
+static struct i2c_driver ad7150_driver = {
+	.driver = {
+		.name = "ad7150",
+		.of_match_table = ad7150_of_match,
+	},
+	.probe = ad7150_probe,
+	.id_table = ad7150_id,
+};
+module_i2c_driver(ad7150_driver);
+
+MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
+MODULE_DESCRIPTION("Analog Devices AD7150/1/6 capacitive sensor driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/cdc/ad7746.c b/drivers/iio/cdc/ad7746.c
new file mode 100644
index 000000000000..b266f5328140
--- /dev/null
+++ b/drivers/iio/cdc/ad7746.c
@@ -0,0 +1,820 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * AD7746 capacitive sensor driver supporting AD7745, AD7746 and AD7747
+ *
+ * Copyright 2011 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/stat.h>
+#include <linux/sysfs.h>
+
+#include <asm/unaligned.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/* AD7746 Register Definition */
+
+#define AD7746_REG_STATUS		0
+#define AD7746_REG_CAP_DATA_HIGH	1
+#define AD7746_REG_VT_DATA_HIGH		4
+#define AD7746_REG_CAP_SETUP		7
+#define AD7746_REG_VT_SETUP		8
+#define AD7746_REG_EXC_SETUP		9
+#define AD7746_REG_CFG			10
+#define AD7746_REG_CAPDACA		11
+#define AD7746_REG_CAPDACB		12
+#define AD7746_REG_CAP_OFFH		13
+#define AD7746_REG_CAP_GAINH		15
+#define AD7746_REG_VOLT_GAINH		17
+
+/* Status Register Bit Designations (AD7746_REG_STATUS) */
+#define AD7746_STATUS_EXCERR		BIT(3)
+#define AD7746_STATUS_RDY		BIT(2)
+#define AD7746_STATUS_RDYVT		BIT(1)
+#define AD7746_STATUS_RDYCAP		BIT(0)
+
+/* Capacitive Channel Setup Register Bit Designations (AD7746_REG_CAP_SETUP) */
+#define AD7746_CAPSETUP_CAPEN		BIT(7)
+#define AD7746_CAPSETUP_CIN2		BIT(6) /* AD7746 only */
+#define AD7746_CAPSETUP_CAPDIFF		BIT(5)
+#define AD7746_CAPSETUP_CACHOP		BIT(0)
+
+/* Voltage/Temperature Setup Register Bit Designations (AD7746_REG_VT_SETUP) */
+#define AD7746_VTSETUP_VTEN		BIT(7)
+#define AD7746_VTSETUP_VTMD_MASK	GENMASK(6, 5)
+#define AD7746_VTSETUP_VTMD_INT_TEMP	0
+#define AD7746_VTSETUP_VTMD_EXT_TEMP	1
+#define AD7746_VTSETUP_VTMD_VDD_MON	2
+#define AD7746_VTSETUP_VTMD_EXT_VIN	3
+#define AD7746_VTSETUP_EXTREF		BIT(4)
+#define AD7746_VTSETUP_VTSHORT		BIT(1)
+#define AD7746_VTSETUP_VTCHOP		BIT(0)
+
+/* Excitation Setup Register Bit Designations (AD7746_REG_EXC_SETUP) */
+#define AD7746_EXCSETUP_CLKCTRL		BIT(7)
+#define AD7746_EXCSETUP_EXCON		BIT(6)
+#define AD7746_EXCSETUP_EXCB		BIT(5)
+#define AD7746_EXCSETUP_NEXCB		BIT(4)
+#define AD7746_EXCSETUP_EXCA		BIT(3)
+#define AD7746_EXCSETUP_NEXCA		BIT(2)
+#define AD7746_EXCSETUP_EXCLVL_MASK	GENMASK(1, 0)
+
+/* Config Register Bit Designations (AD7746_REG_CFG) */
+#define AD7746_CONF_VTFS_MASK		GENMASK(7, 6)
+#define AD7746_CONF_CAPFS_MASK		GENMASK(5, 3)
+#define AD7746_CONF_MODE_MASK		GENMASK(2, 0)
+#define AD7746_CONF_MODE_IDLE		0
+#define AD7746_CONF_MODE_CONT_CONV	1
+#define AD7746_CONF_MODE_SINGLE_CONV	2
+#define AD7746_CONF_MODE_PWRDN		3
+#define AD7746_CONF_MODE_OFFS_CAL	5
+#define AD7746_CONF_MODE_GAIN_CAL	6
+
+/* CAPDAC Register Bit Designations (AD7746_REG_CAPDACx) */
+#define AD7746_CAPDAC_DACEN		BIT(7)
+#define AD7746_CAPDAC_DACP_MASK		GENMASK(6, 0)
+
+struct ad7746_chip_info {
+	struct i2c_client *client;
+	struct mutex lock; /* protect sensor state */
+	/*
+	 * Capacitive channel digital filter setup;
+	 * conversion time/update rate setup per channel
+	 */
+	u8	config;
+	u8	cap_setup;
+	u8	vt_setup;
+	u8	capdac[2][2];
+	s8	capdac_set;
+};
+
+enum ad7746_chan {
+	VIN,
+	VIN_VDD,
+	TEMP_INT,
+	TEMP_EXT,
+	CIN1,
+	CIN1_DIFF,
+	CIN2,
+	CIN2_DIFF,
+};
+
+struct ad7746_chan_info {
+	u8 addr;
+	union {
+		u8 vtmd;
+		struct { /* CAP SETUP fields */
+			unsigned int cin2 : 1;
+			unsigned int capdiff : 1;
+		};
+	};
+};
+
+static const struct ad7746_chan_info ad7746_chan_info[] = {
+	[VIN] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_EXT_VIN,
+	},
+	[VIN_VDD] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_VDD_MON,
+	},
+	[TEMP_INT] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_INT_TEMP,
+	},
+	[TEMP_EXT] = {
+		.addr = AD7746_REG_VT_DATA_HIGH,
+		.vtmd = AD7746_VTSETUP_VTMD_EXT_TEMP,
+	},
+	[CIN1] = {
+		.addr = AD7746_REG_CAP_DATA_HIGH,
+	},
+	[CIN1_DIFF] = {
+		.addr =  AD7746_REG_CAP_DATA_HIGH,
+		.capdiff = 1,
+	},
+	[CIN2] = {
+		.addr = AD7746_REG_CAP_DATA_HIGH,
+		.cin2 = 1,
+	},
+	[CIN2_DIFF] = {
+		.addr = AD7746_REG_CAP_DATA_HIGH,
+		.cin2 = 1,
+		.capdiff = 1,
+	},
+};
+
+static const struct iio_chan_spec ad7746_channels[] = {
+	[VIN] = {
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = VIN,
+	},
+	[VIN_VDD] = {
+		.type = IIO_VOLTAGE,
+		.indexed = 1,
+		.channel = 1,
+		.extend_name = "supply",
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = VIN_VDD,
+	},
+	[TEMP_INT] = {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+		.address = TEMP_INT,
+	},
+	[TEMP_EXT] = {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),
+		.address = TEMP_EXT,
+	},
+	[CIN1] = {
+		.type = IIO_CAPACITANCE,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN1,
+	},
+	[CIN1_DIFF] = {
+		.type = IIO_CAPACITANCE,
+		.differential = 1,
+		.indexed = 1,
+		.channel = 0,
+		.channel2 = 2,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN1_DIFF,
+	},
+	[CIN2] = {
+		.type = IIO_CAPACITANCE,
+		.indexed = 1,
+		.channel = 1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN2,
+	},
+	[CIN2_DIFF] = {
+		.type = IIO_CAPACITANCE,
+		.differential = 1,
+		.indexed = 1,
+		.channel = 1,
+		.channel2 = 3,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_ZEROPOINT),
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.address = CIN2_DIFF,
+	}
+};
+
+/* Values are Update Rate (Hz), Conversion Time (ms) + 1*/
+static const unsigned char ad7746_vt_filter_rate_table[][2] = {
+	{ 50, 20 + 1 }, { 31, 32 + 1 }, { 16, 62 + 1 }, { 8, 122 + 1 },
+};
+
+static const unsigned char ad7746_cap_filter_rate_table[][2] = {
+	{ 91, 11 + 1 }, { 84, 12 + 1 }, { 50, 20 + 1 }, { 26, 38 + 1 },
+	{ 16, 62 + 1 }, { 13, 77 + 1 }, { 11, 92 + 1 }, { 9, 110 + 1 },
+};
+
+static int ad7746_set_capdac(struct ad7746_chip_info *chip, int channel)
+{
+	int ret = i2c_smbus_write_byte_data(chip->client,
+					    AD7746_REG_CAPDACA,
+					    chip->capdac[channel][0]);
+	if (ret < 0)
+		return ret;
+
+	return i2c_smbus_write_byte_data(chip->client,
+					  AD7746_REG_CAPDACB,
+					  chip->capdac[channel][1]);
+}
+
+static int ad7746_select_channel(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan)
+{
+	struct ad7746_chip_info *chip = iio_priv(indio_dev);
+	u8 vt_setup, cap_setup;
+	int ret, delay, idx;
+
+	switch (chan->type) {
+	case IIO_CAPACITANCE:
+		cap_setup = FIELD_PREP(AD7746_CAPSETUP_CIN2,
+				       ad7746_chan_info[chan->address].cin2) |
+			FIELD_PREP(AD7746_CAPSETUP_CAPDIFF,
+				   ad7746_chan_info[chan->address].capdiff) |
+			FIELD_PREP(AD7746_CAPSETUP_CAPEN, 1);
+		vt_setup = chip->vt_setup & ~AD7746_VTSETUP_VTEN;
+		idx = FIELD_GET(AD7746_CONF_CAPFS_MASK, chip->config);
+		delay = ad7746_cap_filter_rate_table[idx][1];
+
+		ret = ad7746_set_capdac(chip, chan->channel);
+		if (ret < 0)
+			return ret;
+
+		if (chip->capdac_set != chan->channel)
+			chip->capdac_set = chan->channel;
+		break;
+	case IIO_VOLTAGE:
+	case IIO_TEMP:
+		vt_setup = FIELD_PREP(AD7746_VTSETUP_VTMD_MASK,
+				      ad7746_chan_info[chan->address].vtmd) |
+			FIELD_PREP(AD7746_VTSETUP_VTEN, 1);
+		cap_setup = chip->cap_setup & ~AD7746_CAPSETUP_CAPEN;
+		idx = FIELD_GET(AD7746_CONF_VTFS_MASK, chip->config);
+		delay = ad7746_cap_filter_rate_table[idx][1];
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	if (chip->cap_setup != cap_setup) {
+		ret = i2c_smbus_write_byte_data(chip->client,
+						AD7746_REG_CAP_SETUP,
+						cap_setup);
+		if (ret < 0)
+			return ret;
+
+		chip->cap_setup = cap_setup;
+	}
+
+	if (chip->vt_setup != vt_setup) {
+		ret = i2c_smbus_write_byte_data(chip->client,
+						AD7746_REG_VT_SETUP,
+						vt_setup);
+		if (ret < 0)
+			return ret;
+
+		chip->vt_setup = vt_setup;
+	}
+
+	return delay;
+}
+
+static inline ssize_t ad7746_start_calib(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len,
+					 u8 regval)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad7746_chip_info *chip = iio_priv(indio_dev);
+	int ret, timeout = 10;
+	bool doit;
+
+	ret = kstrtobool(buf, &doit);
+	if (ret < 0)
+		return ret;
+
+	if (!doit)
+		return 0;
+
+	mutex_lock(&chip->lock);
+	regval |= chip->config;
+	ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval);
+	if (ret < 0)
+		goto unlock;
+
+	do {
+		msleep(20);
+		ret = i2c_smbus_read_byte_data(chip->client, AD7746_REG_CFG);
+		if (ret < 0)
+			goto unlock;
+
+	} while ((ret == regval) && timeout--);
+
+	mutex_unlock(&chip->lock);
+
+	return len;
+
+unlock:
+	mutex_unlock(&chip->lock);
+	return ret;
+}
+
+static ssize_t ad7746_start_offset_calib(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	int ret = ad7746_select_channel(indio_dev,
+			      &ad7746_channels[to_iio_dev_attr(attr)->address]);
+	if (ret < 0)
+		return ret;
+
+	return ad7746_start_calib(dev, attr, buf, len,
+				  FIELD_PREP(AD7746_CONF_MODE_MASK,
+					     AD7746_CONF_MODE_OFFS_CAL));
+}
+
+static ssize_t ad7746_start_gain_calib(struct device *dev,
+				       struct device_attribute *attr,
+				       const char *buf,
+				       size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	int ret = ad7746_select_channel(indio_dev,
+			      &ad7746_channels[to_iio_dev_attr(attr)->address]);
+	if (ret < 0)
+		return ret;
+
+	return ad7746_start_calib(dev, attr, buf, len,
+				  FIELD_PREP(AD7746_CONF_MODE_MASK,
+					     AD7746_CONF_MODE_GAIN_CAL));
+}
+
+static IIO_DEVICE_ATTR(in_capacitance0_calibbias_calibration,
+		       0200, NULL, ad7746_start_offset_calib, CIN1);
+static IIO_DEVICE_ATTR(in_capacitance1_calibbias_calibration,
+		       0200, NULL, ad7746_start_offset_calib, CIN2);
+static IIO_DEVICE_ATTR(in_capacitance0_calibscale_calibration,
+		       0200, NULL, ad7746_start_gain_calib, CIN1);
+static IIO_DEVICE_ATTR(in_capacitance1_calibscale_calibration,
+		       0200, NULL, ad7746_start_gain_calib, CIN2);
+static IIO_DEVICE_ATTR(in_voltage0_calibscale_calibration,
+		       0200, NULL, ad7746_start_gain_calib, VIN);
+
+static int ad7746_store_cap_filter_rate_setup(struct ad7746_chip_info *chip,
+					      int val)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ad7746_cap_filter_rate_table); i++)
+		if (val >= ad7746_cap_filter_rate_table[i][0])
+			break;
+
+	if (i >= ARRAY_SIZE(ad7746_cap_filter_rate_table))
+		i = ARRAY_SIZE(ad7746_cap_filter_rate_table) - 1;
+
+	chip->config &= ~AD7746_CONF_CAPFS_MASK;
+	chip->config |= FIELD_PREP(AD7746_CONF_CAPFS_MASK, i);
+
+	return 0;
+}
+
+static int ad7746_store_vt_filter_rate_setup(struct ad7746_chip_info *chip,
+					     int val)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(ad7746_vt_filter_rate_table); i++)
+		if (val >= ad7746_vt_filter_rate_table[i][0])
+			break;
+
+	if (i >= ARRAY_SIZE(ad7746_vt_filter_rate_table))
+		i = ARRAY_SIZE(ad7746_vt_filter_rate_table) - 1;
+
+	chip->config &= ~AD7746_CONF_VTFS_MASK;
+	chip->config |= FIELD_PREP(AD7746_CONF_VTFS_MASK, i);
+
+	return 0;
+}
+
+static struct attribute *ad7746_attributes[] = {
+	&iio_dev_attr_in_capacitance0_calibbias_calibration.dev_attr.attr,
+	&iio_dev_attr_in_capacitance0_calibscale_calibration.dev_attr.attr,
+	&iio_dev_attr_in_capacitance1_calibscale_calibration.dev_attr.attr,
+	&iio_dev_attr_in_capacitance1_calibbias_calibration.dev_attr.attr,
+	&iio_dev_attr_in_voltage0_calibscale_calibration.dev_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group ad7746_attribute_group = {
+	.attrs = ad7746_attributes,
+};
+
+static int ad7746_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val,
+			    int val2,
+			    long mask)
+{
+	struct ad7746_chip_info *chip = iio_priv(indio_dev);
+	int ret, reg;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBSCALE:
+		if (val != 1)
+			return -EINVAL;
+
+		val = (val2 * 1024) / 15625;
+
+		switch (chan->type) {
+		case IIO_CAPACITANCE:
+			reg = AD7746_REG_CAP_GAINH;
+			break;
+		case IIO_VOLTAGE:
+			reg = AD7746_REG_VOLT_GAINH;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		mutex_lock(&chip->lock);
+		ret = i2c_smbus_write_word_swapped(chip->client, reg, val);
+		mutex_unlock(&chip->lock);
+		if (ret < 0)
+			return ret;
+
+		return 0;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		if (val < 0 || val > 0xFFFF)
+			return -EINVAL;
+
+		mutex_lock(&chip->lock);
+		ret = i2c_smbus_write_word_swapped(chip->client,
+						   AD7746_REG_CAP_OFFH, val);
+		mutex_unlock(&chip->lock);
+		if (ret < 0)
+			return ret;
+
+		return 0;
+	case IIO_CHAN_INFO_OFFSET:
+	case IIO_CHAN_INFO_ZEROPOINT:
+		if (val < 0 || val > 43008000) /* 21pF */
+			return -EINVAL;
+
+		/*
+		 * CAPDAC Scale = 21pF_typ / 127
+		 * CIN Scale = 8.192pF / 2^24
+		 * Offset Scale = CAPDAC Scale / CIN Scale = 338646
+		 */
+
+		val /= 338646;
+		mutex_lock(&chip->lock);
+		chip->capdac[chan->channel][chan->differential] = val > 0 ?
+			FIELD_PREP(AD7746_CAPDAC_DACP_MASK, val) | AD7746_CAPDAC_DACEN : 0;
+
+		ret = ad7746_set_capdac(chip, chan->channel);
+		if (ret < 0) {
+			mutex_unlock(&chip->lock);
+			return ret;
+		}
+
+		chip->capdac_set = chan->channel;
+		mutex_unlock(&chip->lock);
+
+		return 0;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (val2)
+			return -EINVAL;
+
+		switch (chan->type) {
+		case IIO_CAPACITANCE:
+			mutex_lock(&chip->lock);
+			ret = ad7746_store_cap_filter_rate_setup(chip, val);
+			mutex_unlock(&chip->lock);
+			return ret;
+		case IIO_VOLTAGE:
+			mutex_lock(&chip->lock);
+			ret = ad7746_store_vt_filter_rate_setup(chip, val);
+			mutex_unlock(&chip->lock);
+			return ret;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static const int ad7746_v_samp_freq[] = { 50, 31, 16, 8, };
+static const int ad7746_cap_samp_freq[] = { 91, 84, 50, 26, 16, 13, 11, 9, };
+
+static int ad7746_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, const int **vals,
+			     int *type, int *length, long mask)
+{
+	if (mask != IIO_CHAN_INFO_SAMP_FREQ)
+		return -EINVAL;
+
+	switch (chan->type) {
+	case IIO_VOLTAGE:
+		*vals = ad7746_v_samp_freq;
+		*length = ARRAY_SIZE(ad7746_v_samp_freq);
+		break;
+	case IIO_CAPACITANCE:
+		*vals = ad7746_cap_samp_freq;
+		*length = ARRAY_SIZE(ad7746_cap_samp_freq);
+		break;
+	default:
+		return -EINVAL;
+	}
+	*type = IIO_VAL_INT;
+	return IIO_AVAIL_LIST;
+}
+
+static int ad7746_read_channel(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val)
+{
+	struct ad7746_chip_info *chip = iio_priv(indio_dev);
+	int ret, delay;
+	u8 data[3];
+	u8 regval;
+
+	ret = ad7746_select_channel(indio_dev, chan);
+	if (ret < 0)
+		return ret;
+	delay = ret;
+
+	regval = chip->config | FIELD_PREP(AD7746_CONF_MODE_MASK,
+					   AD7746_CONF_MODE_SINGLE_CONV);
+	ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval);
+	if (ret < 0)
+		return ret;
+
+	msleep(delay);
+	/* Now read the actual register */
+	ret = i2c_smbus_read_i2c_block_data(chip->client,
+					    ad7746_chan_info[chan->address].addr,
+					    sizeof(data), data);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Offset applied internally becaue the _offset userspace interface is
+	 * needed for the CAP DACs which apply a controllable offset.
+	 */
+	*val = get_unaligned_be24(data) - 0x800000;
+
+	return 0;
+}
+
+static int ad7746_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2,
+			   long mask)
+{
+	struct ad7746_chip_info *chip = iio_priv(indio_dev);
+	int ret, idx;
+	u8 reg;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&chip->lock);
+		ret = ad7746_read_channel(indio_dev, chan, val);
+		mutex_unlock(&chip->lock);
+		if (ret < 0)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		switch (chan->type) {
+		case IIO_CAPACITANCE:
+			reg = AD7746_REG_CAP_GAINH;
+			break;
+		case IIO_VOLTAGE:
+			reg = AD7746_REG_VOLT_GAINH;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		mutex_lock(&chip->lock);
+		ret = i2c_smbus_read_word_swapped(chip->client, reg);
+		mutex_unlock(&chip->lock);
+		if (ret < 0)
+			return ret;
+		/* 1 + gain_val / 2^16 */
+		*val = 1;
+		*val2 = (15625 * ret) / 1024;
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		mutex_lock(&chip->lock);
+		ret = i2c_smbus_read_word_swapped(chip->client,
+						  AD7746_REG_CAP_OFFH);
+		mutex_unlock(&chip->lock);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+	case IIO_CHAN_INFO_ZEROPOINT:
+		*val = FIELD_GET(AD7746_CAPDAC_DACP_MASK,
+				 chip->capdac[chan->channel][chan->differential]) * 338646;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_CAPACITANCE:
+			/* 8.192pf / 2^24 */
+			*val =  0;
+			*val2 = 488;
+			return IIO_VAL_INT_PLUS_NANO;
+		case IIO_VOLTAGE:
+			/* 1170mV / 2^23 */
+			*val = 1170;
+			if (chan->channel == 1)
+				*val *= 6;
+			*val2 = 23;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		case IIO_TEMP:
+			*val = 125;
+			*val2 = 8;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		switch (chan->type) {
+		case IIO_CAPACITANCE:
+			idx = FIELD_GET(AD7746_CONF_CAPFS_MASK, chip->config);
+			*val = ad7746_cap_filter_rate_table[idx][0];
+			return IIO_VAL_INT;
+		case IIO_VOLTAGE:
+			idx = FIELD_GET(AD7746_CONF_VTFS_MASK, chip->config);
+			*val = ad7746_vt_filter_rate_table[idx][0];
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ad7746_info = {
+	.attrs = &ad7746_attribute_group,
+	.read_raw = ad7746_read_raw,
+	.read_avail = ad7746_read_avail,
+	.write_raw = ad7746_write_raw,
+};
+
+static int ad7746_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct ad7746_chip_info *chip;
+	struct iio_dev *indio_dev;
+	unsigned char regval = 0;
+	unsigned int vdd_permille;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	chip = iio_priv(indio_dev);
+	mutex_init(&chip->lock);
+
+	chip->client = client;
+	chip->capdac_set = -1;
+
+	indio_dev->name = id->name;
+	indio_dev->info = &ad7746_info;
+	indio_dev->channels = ad7746_channels;
+	if (id->driver_data == 7746)
+		indio_dev->num_channels = ARRAY_SIZE(ad7746_channels);
+	else
+		indio_dev->num_channels =  ARRAY_SIZE(ad7746_channels) - 2;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	if (device_property_read_bool(dev, "adi,exca-output-en")) {
+		if (device_property_read_bool(dev, "adi,exca-output-invert"))
+			regval |= AD7746_EXCSETUP_NEXCA;
+		else
+			regval |= AD7746_EXCSETUP_EXCA;
+	}
+
+	if (device_property_read_bool(dev, "adi,excb-output-en")) {
+		if (device_property_read_bool(dev, "adi,excb-output-invert"))
+			regval |= AD7746_EXCSETUP_NEXCB;
+		else
+			regval |= AD7746_EXCSETUP_EXCB;
+	}
+
+	ret = device_property_read_u32(dev, "adi,excitation-vdd-permille",
+				       &vdd_permille);
+	if (!ret) {
+		switch (vdd_permille) {
+		case 125:
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 0);
+			break;
+		case 250:
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 1);
+			break;
+		case 375:
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 2);
+			break;
+		case 500:
+			regval |= FIELD_PREP(AD7746_EXCSETUP_EXCLVL_MASK, 3);
+			break;
+		default:
+			break;
+		}
+	}
+
+	ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_EXC_SETUP,
+					regval);
+	if (ret < 0)
+		return ret;
+
+	return devm_iio_device_register(indio_dev->dev.parent, indio_dev);
+}
+
+static const struct i2c_device_id ad7746_id[] = {
+	{ "ad7745", 7745 },
+	{ "ad7746", 7746 },
+	{ "ad7747", 7747 },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, ad7746_id);
+
+static const struct of_device_id ad7746_of_match[] = {
+	{ .compatible = "adi,ad7745" },
+	{ .compatible = "adi,ad7746" },
+	{ .compatible = "adi,ad7747" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, ad7746_of_match);
+
+static struct i2c_driver ad7746_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = ad7746_of_match,
+	},
+	.probe = ad7746_probe,
+	.id_table = ad7746_id,
+};
+module_i2c_driver(ad7746_driver);
+
+MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD7746/5/7 capacitive sensor driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/chemical/Kconfig b/drivers/iio/chemical/Kconfig
index a7e65a59bf42..c30657e10ee1 100644
--- a/drivers/iio/chemical/Kconfig
+++ b/drivers/iio/chemical/Kconfig
@@ -22,6 +22,17 @@ config ATLAS_PH_SENSOR
 	  To compile this driver as module, choose M here: the
 	  module will be called atlas-ph-sensor.
 
+config ATLAS_EZO_SENSOR
+	tristate "Atlas Scientific EZO sensors"
+	depends on I2C
+	help
+	  Say Y here to build I2C interface support for the following
+	  Atlas Scientific EZO sensors
+	    * CO2 EZO Sensor
+
+	  To compile this driver as module, choose M here: the
+	  module will be called atlas-ezo-sensor.
+
 config BME680
 	tristate "Bosch Sensortec BME680 sensor driver"
 	depends on (I2C || SPI)
@@ -74,6 +85,52 @@ config PMS7003
 	  To compile this driver as a module, choose M here: the module will
 	  be called pms7003.
 
+config SCD30_CORE
+	tristate "SCD30 carbon dioxide sensor driver"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here to build support for the Sensirion SCD30 sensor with carbon
+	  dioxide, relative humidity and temperature sensing capabilities.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called scd30_core.
+
+config SCD30_I2C
+	tristate "SCD30 carbon dioxide sensor I2C driver"
+	depends on SCD30_CORE && I2C
+	select CRC8
+	help
+	  Say Y here to build support for the Sensirion SCD30 I2C interface
+	  driver.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called scd30_i2c.
+
+config SCD30_SERIAL
+	tristate "SCD30 carbon dioxide sensor serial driver"
+	depends on SCD30_CORE && SERIAL_DEV_BUS
+	select CRC16
+	help
+	  Say Y here to build support for the Sensirion SCD30 serial interface
+	  driver.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called scd30_serial.
+
+config SCD4X
+	tristate "SCD4X carbon dioxide sensor driver"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	depends on I2C
+	select CRC8
+	help
+	  Say Y here to build support for the Sensirion SCD4X sensor with carbon
+	  dioxide, relative humidity and temperature sensing capabilities.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called scd4x.
+
 config SENSIRION_SGP30
 	tristate "Sensirion SGPxx gas sensors"
 	depends on I2C
@@ -87,18 +144,55 @@ config SENSIRION_SGP30
 	  To compile this driver as module, choose M here: the
 	  module will be called sgp30.
 
-config SPS30
-	tristate "SPS30 particulate matter sensor"
+config SENSIRION_SGP40
+	tristate "Sensirion SGP40 gas sensor"
 	depends on I2C
 	select CRC8
+	help
+	  Say Y here to build I2C interface to support Sensirion SGP40 gas
+	  sensor
+
+	  To compile this driver as module, choose M here: the
+	  module will be called sgp40.
+
+config SPS30
+	tristate
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
+
+config SPS30_I2C
+	tristate "SPS30 particulate matter sensor I2C driver"
+	depends on I2C
+	select SPS30
+	select CRC8
 	help
-	  Say Y here to build support for the Sensirion SPS30 particulate
-	  matter sensor.
+	  Say Y here to build support for the Sensirion SPS30 I2C interface
+	  driver.
+
+	  To compile this driver as a module, choose M here: the module will
+	  be called sps30_i2c.
+
+config SPS30_SERIAL
+	tristate "SPS30 particulate matter sensor serial driver"
+	depends on SERIAL_DEV_BUS
+	select SPS30
+	help
+	  Say Y here to build support for the Sensirion SPS30 serial interface
+	  driver.
 
 	  To compile this driver as a module, choose M here: the module will
-	  be called sps30.
+	  be called sps30_serial.
+
+config SENSEAIR_SUNRISE_CO2
+	tristate "Senseair Sunrise 006-0-0007 CO2 sensor"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  Say yes here to build support for Senseair Sunrise 006-0-0007 CO2
+	  sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sunrise_co2.
 
 config VZ89X
 	tristate "SGX Sensortech MiCS VZ89X VOC sensor"
diff --git a/drivers/iio/chemical/Makefile b/drivers/iio/chemical/Makefile
index 33d3a595dda9..a11e777a7a00 100644
--- a/drivers/iio/chemical/Makefile
+++ b/drivers/iio/chemical/Makefile
@@ -5,12 +5,21 @@
 
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_ATLAS_PH_SENSOR)	+= atlas-sensor.o
+obj-$(CONFIG_ATLAS_EZO_SENSOR)	+= atlas-ezo-sensor.o
 obj-$(CONFIG_BME680) += bme680_core.o
 obj-$(CONFIG_BME680_I2C) += bme680_i2c.o
 obj-$(CONFIG_BME680_SPI) += bme680_spi.o
 obj-$(CONFIG_CCS811)		+= ccs811.o
 obj-$(CONFIG_IAQCORE)		+= ams-iaq-core.o
 obj-$(CONFIG_PMS7003) += pms7003.o
+obj-$(CONFIG_SCD30_CORE) += scd30_core.o
+obj-$(CONFIG_SCD30_I2C) += scd30_i2c.o
+obj-$(CONFIG_SCD30_SERIAL) += scd30_serial.o
+obj-$(CONFIG_SCD4X) += scd4x.o
+obj-$(CONFIG_SENSEAIR_SUNRISE_CO2) += sunrise_co2.o
 obj-$(CONFIG_SENSIRION_SGP30)	+= sgp30.o
+obj-$(CONFIG_SENSIRION_SGP40)	+= sgp40.o
 obj-$(CONFIG_SPS30) += sps30.o
+obj-$(CONFIG_SPS30_I2C) += sps30_i2c.o
+obj-$(CONFIG_SPS30_SERIAL) += sps30_serial.o
 obj-$(CONFIG_VZ89X)		+= vz89x.o
diff --git a/drivers/iio/chemical/ams-iaq-core.c b/drivers/iio/chemical/ams-iaq-core.c
index a0646ba2ad88..97be3669c554 100644
--- a/drivers/iio/chemical/ams-iaq-core.c
+++ b/drivers/iio/chemical/ams-iaq-core.c
@@ -7,6 +7,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
@@ -152,7 +153,6 @@ static int ams_iaqcore_probe(struct i2c_client *client,
 	data->last_update = jiffies - HZ;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &ams_iaqcore_info;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -178,7 +178,7 @@ MODULE_DEVICE_TABLE(of, ams_iaqcore_dt_ids);
 static struct i2c_driver ams_iaqcore_driver = {
 	.driver = {
 		.name	= "ams-iaq-core",
-		.of_match_table = of_match_ptr(ams_iaqcore_dt_ids),
+		.of_match_table = ams_iaqcore_dt_ids,
 	},
 	.probe = ams_iaqcore_probe,
 	.id_table = ams_iaqcore_id,
diff --git a/drivers/iio/chemical/atlas-ezo-sensor.c b/drivers/iio/chemical/atlas-ezo-sensor.c
new file mode 100644
index 000000000000..bbcf5a59c1f4
--- /dev/null
+++ b/drivers/iio/chemical/atlas-ezo-sensor.c
@@ -0,0 +1,248 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * atlas-ezo-sensor.c - Support for Atlas Scientific EZO sensors
+ *
+ * Copyright (C) 2020 Konsulko Group
+ * Author: Matt Ranostay <matt.ranostay@konsulko.com>
+ */
+
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/property.h>
+#include <linux/err.h>
+#include <linux/i2c.h>
+
+#include <linux/iio/iio.h>
+
+#define ATLAS_EZO_DRV_NAME		"atlas-ezo-sensor"
+#define ATLAS_INT_TIME_IN_MS		950
+#define ATLAS_INT_HUM_TIME_IN_MS	350
+
+enum {
+	ATLAS_CO2_EZO,
+	ATLAS_O2_EZO,
+	ATLAS_HUM_EZO,
+};
+
+struct atlas_ezo_device {
+	const struct iio_chan_spec *channels;
+	int num_channels;
+	int delay;
+};
+
+struct atlas_ezo_data {
+	struct i2c_client *client;
+	const struct atlas_ezo_device *chip;
+
+	/* lock to avoid multiple concurrent read calls */
+	struct mutex lock;
+
+	u8 buffer[8];
+};
+
+#define ATLAS_CONCENTRATION_CHANNEL(_modifier) \
+	{ \
+		.type = IIO_CONCENTRATION, \
+		.modified = 1,\
+		.channel2 = _modifier, \
+		.info_mask_separate = \
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), \
+		.scan_index = 0, \
+		.scan_type =  { \
+			.sign = 'u', \
+			.realbits = 32, \
+			.storagebits = 32, \
+			.endianness = IIO_CPU, \
+		}, \
+	}
+
+static const struct iio_chan_spec atlas_co2_ezo_channels[] = {
+	ATLAS_CONCENTRATION_CHANNEL(IIO_MOD_CO2),
+};
+
+static const struct iio_chan_spec atlas_o2_ezo_channels[] = {
+	ATLAS_CONCENTRATION_CHANNEL(IIO_MOD_O2),
+};
+
+static const struct iio_chan_spec atlas_hum_ezo_channels[] = {
+	{
+		.type = IIO_HUMIDITYRELATIVE,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.scan_index = 0,
+		.scan_type =  {
+			.sign = 'u',
+			.realbits = 32,
+			.storagebits = 32,
+			.endianness = IIO_CPU,
+		},
+	},
+};
+
+static struct atlas_ezo_device atlas_ezo_devices[] = {
+	[ATLAS_CO2_EZO] = {
+		.channels = atlas_co2_ezo_channels,
+		.num_channels = 1,
+		.delay = ATLAS_INT_TIME_IN_MS,
+	},
+	[ATLAS_O2_EZO] = {
+		.channels = atlas_o2_ezo_channels,
+		.num_channels = 1,
+		.delay = ATLAS_INT_TIME_IN_MS,
+	},
+	[ATLAS_HUM_EZO] = {
+		.channels = atlas_hum_ezo_channels,
+		.num_channels = 1,
+		.delay = ATLAS_INT_HUM_TIME_IN_MS,
+	},
+};
+
+static void atlas_ezo_sanitize(char *buf)
+{
+	char *ptr = strchr(buf, '.');
+
+	if (!ptr)
+		return;
+
+	memmove(ptr, ptr + 1, strlen(ptr));
+}
+
+static int atlas_ezo_read_raw(struct iio_dev *indio_dev,
+			  struct iio_chan_spec const *chan,
+			  int *val, int *val2, long mask)
+{
+	struct atlas_ezo_data *data = iio_priv(indio_dev);
+	struct i2c_client *client = data->client;
+
+	if (chan->type != IIO_CONCENTRATION)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW: {
+		int ret;
+		long tmp;
+
+		mutex_lock(&data->lock);
+
+		tmp = i2c_smbus_write_byte(client, 'R');
+
+		if (tmp < 0) {
+			mutex_unlock(&data->lock);
+			return tmp;
+		}
+
+		msleep(data->chip->delay);
+
+		tmp = i2c_master_recv(client, data->buffer, sizeof(data->buffer));
+
+		if (tmp < 0 || data->buffer[0] != 1) {
+			mutex_unlock(&data->lock);
+			return -EBUSY;
+		}
+
+		/* removing floating point for fixed number representation */
+		atlas_ezo_sanitize(data->buffer + 2);
+
+		ret = kstrtol(data->buffer + 1, 10, &tmp);
+
+		*val = tmp;
+
+		mutex_unlock(&data->lock);
+
+		return ret ? ret : IIO_VAL_INT;
+	}
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_HUMIDITYRELATIVE:
+			*val = 10;
+			return IIO_VAL_INT;
+		case IIO_CONCENTRATION:
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		/* IIO_CONCENTRATION modifiers */
+		switch (chan->channel2) {
+		case IIO_MOD_CO2:
+			*val = 0;
+			*val2 = 100; /* 0.0001 */
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_MOD_O2:
+			*val = 100;
+			return IIO_VAL_INT;
+		}
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct iio_info atlas_info = {
+	.read_raw = atlas_ezo_read_raw,
+};
+
+static const struct i2c_device_id atlas_ezo_id[] = {
+	{ "atlas-co2-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_CO2_EZO] },
+	{ "atlas-o2-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_O2_EZO] },
+	{ "atlas-hum-ezo", (kernel_ulong_t)&atlas_ezo_devices[ATLAS_HUM_EZO] },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, atlas_ezo_id);
+
+static const struct of_device_id atlas_ezo_dt_ids[] = {
+	{ .compatible = "atlas,co2-ezo", .data = &atlas_ezo_devices[ATLAS_CO2_EZO], },
+	{ .compatible = "atlas,o2-ezo", .data = &atlas_ezo_devices[ATLAS_O2_EZO], },
+	{ .compatible = "atlas,hum-ezo", .data = &atlas_ezo_devices[ATLAS_HUM_EZO], },
+	{}
+};
+MODULE_DEVICE_TABLE(of, atlas_ezo_dt_ids);
+
+static int atlas_ezo_probe(struct i2c_client *client,
+		       const struct i2c_device_id *id)
+{
+	const struct atlas_ezo_device *chip;
+	struct atlas_ezo_data *data;
+	struct iio_dev *indio_dev;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	if (dev_fwnode(&client->dev))
+		chip = device_get_match_data(&client->dev);
+	else
+		chip = (const struct atlas_ezo_device *)id->driver_data;
+	if (!chip)
+		return -EINVAL;
+
+	indio_dev->info = &atlas_info;
+	indio_dev->name = ATLAS_EZO_DRV_NAME;
+	indio_dev->channels = chip->channels;
+	indio_dev->num_channels = chip->num_channels;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	data = iio_priv(indio_dev);
+	data->client = client;
+	data->chip = chip;
+	mutex_init(&data->lock);
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+};
+
+static struct i2c_driver atlas_ezo_driver = {
+	.driver = {
+		.name	= ATLAS_EZO_DRV_NAME,
+		.of_match_table	= atlas_ezo_dt_ids,
+	},
+	.probe		= atlas_ezo_probe,
+	.id_table	= atlas_ezo_id,
+};
+module_i2c_driver(atlas_ezo_driver);
+
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
+MODULE_DESCRIPTION("Atlas Scientific EZO sensors");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/chemical/atlas-sensor.c b/drivers/iio/chemical/atlas-sensor.c
index 2f0a6fed2589..7cac77a931c7 100644
--- a/drivers/iio/chemical/atlas-sensor.c
+++ b/drivers/iio/chemical/atlas-sensor.c
@@ -15,7 +15,7 @@
 #include <linux/irq.h>
 #include <linux/irq_work.h>
 #include <linux/i2c.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include <linux/regmap.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -48,6 +48,13 @@
 #define ATLAS_REG_EC_CALIB_STATUS_LOW		BIT(2)
 #define ATLAS_REG_EC_CALIB_STATUS_HIGH		BIT(3)
 
+#define ATLAS_REG_DO_CALIB_STATUS		0x09
+#define ATLAS_REG_DO_CALIB_STATUS_MASK		0x03
+#define ATLAS_REG_DO_CALIB_STATUS_PRESSURE	BIT(0)
+#define ATLAS_REG_DO_CALIB_STATUS_DO		BIT(1)
+
+#define ATLAS_REG_RTD_DATA		0x0e
+
 #define ATLAS_REG_PH_TEMP_DATA		0x0e
 #define ATLAS_REG_PH_DATA		0x16
 
@@ -60,14 +67,21 @@
 #define ATLAS_REG_ORP_CALIB_STATUS	0x0d
 #define ATLAS_REG_ORP_DATA		0x0e
 
+#define ATLAS_REG_DO_TEMP_DATA		0x12
+#define ATLAS_REG_DO_DATA		0x22
+
 #define ATLAS_PH_INT_TIME_IN_MS		450
 #define ATLAS_EC_INT_TIME_IN_MS		650
 #define ATLAS_ORP_INT_TIME_IN_MS	450
+#define ATLAS_DO_INT_TIME_IN_MS		450
+#define ATLAS_RTD_INT_TIME_IN_MS	450
 
 enum {
 	ATLAS_PH_SM,
 	ATLAS_EC_SM,
 	ATLAS_ORP_SM,
+	ATLAS_DO_SM,
+	ATLAS_RTD_SM,
 };
 
 struct atlas_data {
@@ -76,8 +90,9 @@ struct atlas_data {
 	struct atlas_device *chip;
 	struct regmap *regmap;
 	struct irq_work work;
-
-	__be32 buffer[6]; /* 96-bit data + 32-bit pad + 64-bit timestamp */
+	unsigned int interrupt_enabled;
+	/* 96-bit data + 32-bit pad + 64-bit timestamp */
+	__be32 buffer[6] __aligned(8);
 };
 
 static const struct regmap_config atlas_regmap_config = {
@@ -121,7 +136,7 @@ static const struct iio_chan_spec atlas_ph_channels[] = {
 	},
 };
 
-#define ATLAS_EC_CHANNEL(_idx, _addr) \
+#define ATLAS_CONCENTRATION_CHANNEL(_idx, _addr) \
 	{\
 		.type = IIO_CONCENTRATION, \
 		.indexed = 1, \
@@ -152,8 +167,8 @@ static const struct iio_chan_spec atlas_ec_channels[] = {
 			.endianness = IIO_BE,
 		},
 	},
-	ATLAS_EC_CHANNEL(0, ATLAS_REG_TDS_DATA),
-	ATLAS_EC_CHANNEL(1, ATLAS_REG_PSS_DATA),
+	ATLAS_CONCENTRATION_CHANNEL(0, ATLAS_REG_TDS_DATA),
+	ATLAS_CONCENTRATION_CHANNEL(1, ATLAS_REG_PSS_DATA),
 	IIO_CHAN_SOFT_TIMESTAMP(3),
 	{
 		.type = IIO_TEMP,
@@ -182,6 +197,47 @@ static const struct iio_chan_spec atlas_orp_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(1),
 };
 
+static const struct iio_chan_spec atlas_do_channels[] = {
+	{
+		.type = IIO_CONCENTRATION,
+		.address = ATLAS_REG_DO_DATA,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 32,
+			.storagebits = 32,
+			.endianness = IIO_BE,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1),
+	{
+		.type = IIO_TEMP,
+		.address = ATLAS_REG_DO_TEMP_DATA,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+		.output = 1,
+		.scan_index = -1
+	},
+};
+
+static const struct iio_chan_spec atlas_rtd_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.address = ATLAS_REG_RTD_DATA,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 32,
+			.storagebits = 32,
+			.endianness = IIO_BE,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1),
+};
+
 static int atlas_check_ph_calibration(struct atlas_data *data)
 {
 	struct device *dev = &data->client->dev;
@@ -262,7 +318,31 @@ static int atlas_check_orp_calibration(struct atlas_data *data)
 		dev_warn(dev, "device has not been calibrated\n");
 
 	return 0;
-};
+}
+
+static int atlas_check_do_calibration(struct atlas_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int ret;
+	unsigned int val;
+
+	ret = regmap_read(data->regmap, ATLAS_REG_DO_CALIB_STATUS, &val);
+	if (ret)
+		return ret;
+
+	if (!(val & ATLAS_REG_DO_CALIB_STATUS_MASK)) {
+		dev_warn(dev, "device has not been calibrated\n");
+		return 0;
+	}
+
+	if (!(val & ATLAS_REG_DO_CALIB_STATUS_PRESSURE))
+		dev_warn(dev, "device missing atmospheric pressure calibration\n");
+
+	if (!(val & ATLAS_REG_DO_CALIB_STATUS_DO))
+		dev_warn(dev, "device missing dissolved oxygen calibration\n");
+
+	return 0;
+}
 
 struct atlas_device {
 	const struct iio_chan_spec *channels;
@@ -295,6 +375,19 @@ static struct atlas_device atlas_devices[] = {
 				.calibration = &atlas_check_orp_calibration,
 				.delay = ATLAS_ORP_INT_TIME_IN_MS,
 	},
+	[ATLAS_DO_SM] = {
+				.channels = atlas_do_channels,
+				.num_channels = 3,
+				.data_reg = ATLAS_REG_DO_DATA,
+				.calibration = &atlas_check_do_calibration,
+				.delay = ATLAS_DO_INT_TIME_IN_MS,
+	},
+	[ATLAS_RTD_SM] = {
+				.channels = atlas_rtd_channels,
+				.num_channels = 2,
+				.data_reg = ATLAS_REG_RTD_DATA,
+				.delay = ATLAS_RTD_INT_TIME_IN_MS,
+	},
 };
 
 static int atlas_set_powermode(struct atlas_data *data, int on)
@@ -304,6 +397,9 @@ static int atlas_set_powermode(struct atlas_data *data, int on)
 
 static int atlas_set_interrupt(struct atlas_data *data, bool state)
 {
+	if (!data->interrupt_enabled)
+		return 0;
+
 	return regmap_update_bits(data->regmap, ATLAS_REG_INT_CONTROL,
 				  ATLAS_REG_INT_CONTROL_EN,
 				  state ? ATLAS_REG_INT_CONTROL_EN : 0);
@@ -314,16 +410,10 @@ static int atlas_buffer_postenable(struct iio_dev *indio_dev)
 	struct atlas_data *data = iio_priv(indio_dev);
 	int ret;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
+	ret = pm_runtime_resume_and_get(&data->client->dev);
 	if (ret)
 		return ret;
 
-	ret = pm_runtime_get_sync(&data->client->dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(&data->client->dev);
-		return ret;
-	}
-
 	return atlas_set_interrupt(data, true);
 }
 
@@ -341,12 +431,9 @@ static int atlas_buffer_predisable(struct iio_dev *indio_dev)
 	if (ret)
 		return ret;
 
-	return iio_triggered_buffer_predisable(indio_dev);
+	return 0;
 }
 
-static const struct iio_trigger_ops atlas_interrupt_trigger_ops = {
-};
-
 static const struct iio_buffer_setup_ops atlas_buffer_setup_ops = {
 	.postenable = atlas_buffer_postenable,
 	.predisable = atlas_buffer_predisable,
@@ -368,8 +455,7 @@ static irqreturn_t atlas_trigger_handler(int irq, void *private)
 	int ret;
 
 	ret = regmap_bulk_read(data->regmap, data->chip->data_reg,
-			      (u8 *) &data->buffer,
-			      sizeof(__be32) * channels);
+			      &data->buffer, sizeof(__be32) * channels);
 
 	if (!ret)
 		iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
@@ -396,16 +482,14 @@ static int atlas_read_measurement(struct atlas_data *data, int reg, __be32 *val)
 	int suspended = pm_runtime_suspended(dev);
 	int ret;
 
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0) {
-		pm_runtime_put_noidle(dev);
+	ret = pm_runtime_resume_and_get(dev);
+	if (ret)
 		return ret;
-	}
 
 	if (suspended)
 		msleep(data->chip->delay);
 
-	ret = regmap_bulk_read(data->regmap, reg, (u8 *) val, sizeof(*val));
+	ret = regmap_bulk_read(data->regmap, reg, val, sizeof(*val));
 
 	pm_runtime_mark_last_busy(dev);
 	pm_runtime_put_autosuspend(dev);
@@ -420,6 +504,7 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
 	struct atlas_data *data = iio_priv(indio_dev);
 
 	switch (mask) {
+	case IIO_CHAN_INFO_PROCESSED:
 	case IIO_CHAN_INFO_RAW: {
 		int ret;
 		__be32 reg;
@@ -427,7 +512,7 @@ static int atlas_read_raw(struct iio_dev *indio_dev,
 		switch (chan->type) {
 		case IIO_TEMP:
 			ret = regmap_bulk_read(data->regmap, chan->address,
-					      (u8 *) &reg, sizeof(reg));
+					       &reg, sizeof(reg));
 			break;
 		case IIO_PH:
 		case IIO_CONCENTRATION:
@@ -504,9 +589,11 @@ static const struct iio_info atlas_info = {
 };
 
 static const struct i2c_device_id atlas_id[] = {
-	{ "atlas-ph-sm", ATLAS_PH_SM},
-	{ "atlas-ec-sm", ATLAS_EC_SM},
-	{ "atlas-orp-sm", ATLAS_ORP_SM},
+	{ "atlas-ph-sm", ATLAS_PH_SM },
+	{ "atlas-ec-sm", ATLAS_EC_SM },
+	{ "atlas-orp-sm", ATLAS_ORP_SM },
+	{ "atlas-do-sm", ATLAS_DO_SM },
+	{ "atlas-rtd-sm", ATLAS_RTD_SM },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, atlas_id);
@@ -515,6 +602,8 @@ static const struct of_device_id atlas_dt_ids[] = {
 	{ .compatible = "atlas,ph-sm", .data = (void *)ATLAS_PH_SM, },
 	{ .compatible = "atlas,ec-sm", .data = (void *)ATLAS_EC_SM, },
 	{ .compatible = "atlas,orp-sm", .data = (void *)ATLAS_ORP_SM, },
+	{ .compatible = "atlas,do-sm", .data = (void *)ATLAS_DO_SM, },
+	{ .compatible = "atlas,rtd-sm", .data = (void *)ATLAS_RTD_SM, },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, atlas_dt_ids);
@@ -524,7 +613,6 @@ static int atlas_probe(struct i2c_client *client,
 {
 	struct atlas_data *data;
 	struct atlas_device *chip;
-	const struct of_device_id *of_id;
 	struct iio_trigger *trig;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -533,21 +621,19 @@ static int atlas_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 
-	of_id = of_match_device(atlas_dt_ids, &client->dev);
-	if (!of_id)
+	if (!dev_fwnode(&client->dev))
 		chip = &atlas_devices[id->driver_data];
 	else
-		chip = &atlas_devices[(unsigned long)of_id->data];
+		chip = &atlas_devices[(unsigned long)device_get_match_data(&client->dev)];
 
 	indio_dev->info = &atlas_info;
 	indio_dev->name = ATLAS_DRV_NAME;
 	indio_dev->channels = chip->channels;
 	indio_dev->num_channels = chip->num_channels;
 	indio_dev->modes = INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = &client->dev;
 
 	trig = devm_iio_trigger_alloc(&client->dev, "%s-dev%d",
-				      indio_dev->name, indio_dev->id);
+				      indio_dev->name, iio_device_id(indio_dev));
 
 	if (!trig)
 		return -ENOMEM;
@@ -556,8 +642,6 @@ static int atlas_probe(struct i2c_client *client,
 	data->client = client;
 	data->trig = trig;
 	data->chip = chip;
-	trig->dev.parent = indio_dev->dev.parent;
-	trig->ops = &atlas_interrupt_trigger_ops;
 	iio_trigger_set_drvdata(trig, indio_dev);
 
 	i2c_set_clientdata(client, indio_dev);
@@ -572,11 +656,6 @@ static int atlas_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	if (client->irq <= 0) {
-		dev_err(&client->dev, "no valid irq defined\n");
-		return -EINVAL;
-	}
-
 	ret = chip->calibration(data);
 	if (ret)
 		return ret;
@@ -596,16 +675,20 @@ static int atlas_probe(struct i2c_client *client,
 
 	init_irq_work(&data->work, atlas_work_handler);
 
-	/* interrupt pin toggles on new conversion */
-	ret = devm_request_threaded_irq(&client->dev, client->irq,
-					NULL, atlas_interrupt_handler,
-					IRQF_TRIGGER_RISING |
-					IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
-					"atlas_irq",
-					indio_dev);
-	if (ret) {
-		dev_err(&client->dev, "request irq (%d) failed\n", client->irq);
-		goto unregister_buffer;
+	if (client->irq > 0) {
+		/* interrupt pin toggles on new conversion */
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+				NULL, atlas_interrupt_handler,
+				IRQF_TRIGGER_RISING |
+				IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+				"atlas_irq",
+				indio_dev);
+
+		if (ret)
+			dev_warn(&client->dev,
+				"request irq (%d) failed\n", client->irq);
+		else
+			data->interrupt_enabled = 1;
 	}
 
 	ret = atlas_set_powermode(data, 1);
@@ -639,10 +722,11 @@ unregister_trigger:
 	return ret;
 }
 
-static int atlas_remove(struct i2c_client *client)
+static void atlas_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct atlas_data *data = iio_priv(indio_dev);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
@@ -650,12 +734,13 @@ static int atlas_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
-	return atlas_set_powermode(data, 0);
+	ret = atlas_set_powermode(data, 0);
+	if (ret)
+		dev_err(&client->dev, "Failed to power down device (%pe)\n",
+			ERR_PTR(ret));
 }
 
-#ifdef CONFIG_PM
 static int atlas_runtime_suspend(struct device *dev)
 {
 	struct atlas_data *data =
@@ -671,18 +756,16 @@ static int atlas_runtime_resume(struct device *dev)
 
 	return atlas_set_powermode(data, 1);
 }
-#endif
 
 static const struct dev_pm_ops atlas_pm_ops = {
-	SET_RUNTIME_PM_OPS(atlas_runtime_suspend,
-			   atlas_runtime_resume, NULL)
+	RUNTIME_PM_OPS(atlas_runtime_suspend, atlas_runtime_resume, NULL)
 };
 
 static struct i2c_driver atlas_driver = {
 	.driver = {
 		.name	= ATLAS_DRV_NAME,
-		.of_match_table	= of_match_ptr(atlas_dt_ids),
-		.pm	= &atlas_pm_ops,
+		.of_match_table	= atlas_dt_ids,
+		.pm	= pm_ptr(&atlas_pm_ops),
 	},
 	.probe		= atlas_probe,
 	.remove		= atlas_remove,
diff --git a/drivers/iio/chemical/bme680_core.c b/drivers/iio/chemical/bme680_core.c
index ccde4c65ff93..ef5e0e46fd34 100644
--- a/drivers/iio/chemical/bme680_core.c
+++ b/drivers/iio/chemical/bme680_core.c
@@ -81,7 +81,7 @@ const struct regmap_config bme680_regmap_config = {
 	.volatile_table = &bme680_volatile_table,
 	.cache_type = REGCACHE_RBTREE,
 };
-EXPORT_SYMBOL(bme680_regmap_config);
+EXPORT_SYMBOL_NS(bme680_regmap_config, IIO_BME680);
 
 static const struct iio_chan_spec bme680_channels[] = {
 	{
@@ -114,14 +114,16 @@ static int bme680_read_calib(struct bme680_data *data,
 	__le16 buf;
 
 	/* Temperature related coefficients */
-	ret = regmap_bulk_read(data->regmap, BME680_T1_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_T1_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_T1_LSB_REG\n");
 		return ret;
 	}
 	calib->par_t1 = le16_to_cpu(buf);
 
-	ret = regmap_bulk_read(data->regmap, BME680_T2_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_T2_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_T2_LSB_REG\n");
 		return ret;
@@ -136,14 +138,16 @@ static int bme680_read_calib(struct bme680_data *data,
 	calib->par_t3 = tmp;
 
 	/* Pressure related coefficients */
-	ret = regmap_bulk_read(data->regmap, BME680_P1_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_P1_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_P1_LSB_REG\n");
 		return ret;
 	}
 	calib->par_p1 = le16_to_cpu(buf);
 
-	ret = regmap_bulk_read(data->regmap, BME680_P2_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_P2_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_P2_LSB_REG\n");
 		return ret;
@@ -157,14 +161,16 @@ static int bme680_read_calib(struct bme680_data *data,
 	}
 	calib->par_p3 = tmp;
 
-	ret = regmap_bulk_read(data->regmap, BME680_P4_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_P4_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_P4_LSB_REG\n");
 		return ret;
 	}
 	calib->par_p4 = le16_to_cpu(buf);
 
-	ret = regmap_bulk_read(data->regmap, BME680_P5_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_P5_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_P5_LSB_REG\n");
 		return ret;
@@ -185,14 +191,16 @@ static int bme680_read_calib(struct bme680_data *data,
 	}
 	calib->par_p7 = tmp;
 
-	ret = regmap_bulk_read(data->regmap, BME680_P8_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_P8_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_P8_LSB_REG\n");
 		return ret;
 	}
 	calib->par_p8 = le16_to_cpu(buf);
 
-	ret = regmap_bulk_read(data->regmap, BME680_P9_LSB_REG, (u8 *) &buf, 2);
+	ret = regmap_bulk_read(data->regmap, BME680_P9_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_P9_LSB_REG\n");
 		return ret;
@@ -276,8 +284,8 @@ static int bme680_read_calib(struct bme680_data *data,
 	}
 	calib->par_gh1 = tmp;
 
-	ret = regmap_bulk_read(data->regmap, BME680_GH2_LSB_REG, (u8 *) &buf,
-			       2);
+	ret = regmap_bulk_read(data->regmap, BME680_GH2_LSB_REG,
+			       &buf, sizeof(buf));
 	if (ret < 0) {
 		dev_err(dev, "failed to read BME680_GH2_LSB_REG\n");
 		return ret;
@@ -471,7 +479,7 @@ static u8 bme680_calc_heater_res(struct bme680_data *data, u16 temp)
 	var4 = (var3 / (calib->res_heat_range + 4));
 	var5 = 131 * calib->res_heat_val + 65536;
 	heatr_res_x100 = ((var4 / var5) - 250) * 34;
-	heatr_res = (heatr_res_x100 + 50) / 100;
+	heatr_res = DIV_ROUND_CLOSEST(heatr_res_x100, 100);
 
 	return heatr_res;
 }
@@ -615,7 +623,7 @@ static int bme680_read_temp(struct bme680_data *data, int *val)
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, BME680_REG_TEMP_MSB,
-			       (u8 *) &tmp, 3);
+			       &tmp, 3);
 	if (ret < 0) {
 		dev_err(dev, "failed to read temperature\n");
 		return ret;
@@ -630,7 +638,7 @@ static int bme680_read_temp(struct bme680_data *data, int *val)
 	comp_temp = bme680_compensate_temp(data, adc_temp);
 	/*
 	 * val might be NULL if we're called by the read_press/read_humid
-	 * routine which is callled to get t_fine value used in
+	 * routine which is called to get t_fine value used in
 	 * compensate_press/compensate_humid to get compensated
 	 * pressure/humidity readings.
 	 */
@@ -656,7 +664,7 @@ static int bme680_read_press(struct bme680_data *data,
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, BME680_REG_PRESS_MSB,
-			       (u8 *) &tmp, 3);
+			       &tmp, 3);
 	if (ret < 0) {
 		dev_err(dev, "failed to read pressure\n");
 		return ret;
@@ -689,7 +697,7 @@ static int bme680_read_humid(struct bme680_data *data,
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, BM6880_REG_HUMIDITY_MSB,
-			       (u8 *) &tmp, 2);
+			       &tmp, sizeof(tmp));
 	if (ret < 0) {
 		dev_err(dev, "failed to read humidity\n");
 		return ret;
@@ -754,7 +762,7 @@ static int bme680_read_gas(struct bme680_data *data,
 	}
 
 	ret = regmap_bulk_read(data->regmap, BME680_REG_GAS_MSB,
-			       (u8 *) &tmp, 2);
+			       &tmp, sizeof(tmp));
 	if (ret < 0) {
 		dev_err(dev, "failed to read gas resistance\n");
 		return ret;
@@ -915,7 +923,6 @@ int bme680_core_probe(struct device *dev, struct regmap *regmap,
 	data = iio_priv(indio_dev);
 	dev_set_drvdata(dev, indio_dev);
 	data->regmap = regmap;
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->channels = bme680_channels;
 	indio_dev->num_channels = ARRAY_SIZE(bme680_channels);
@@ -950,7 +957,7 @@ int bme680_core_probe(struct device *dev, struct regmap *regmap,
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(bme680_core_probe);
+EXPORT_SYMBOL_NS_GPL(bme680_core_probe, IIO_BME680);
 
 MODULE_AUTHOR("Himanshu Jha <himanshujha199640@gmail.com>");
 MODULE_DESCRIPTION("Bosch BME680 Driver");
diff --git a/drivers/iio/chemical/bme680_i2c.c b/drivers/iio/chemical/bme680_i2c.c
index de9c9e3d23ea..20f2c20b6b02 100644
--- a/drivers/iio/chemical/bme680_i2c.c
+++ b/drivers/iio/chemical/bme680_i2c.c
@@ -11,7 +11,6 @@
  * Note: SDO pin cannot be left floating otherwise I2C address
  *	 will be undefined.
  */
-#include <linux/acpi.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
@@ -26,8 +25,7 @@ static int bme680_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &bme680_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-				(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -43,12 +41,6 @@ static const struct i2c_device_id bme680_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, bme680_i2c_id);
 
-static const struct acpi_device_id bme680_acpi_match[] = {
-	{"BME0680", 0},
-	{},
-};
-MODULE_DEVICE_TABLE(acpi, bme680_acpi_match);
-
 static const struct of_device_id bme680_of_i2c_match[] = {
 	{ .compatible = "bosch,bme680", },
 	{},
@@ -58,7 +50,6 @@ MODULE_DEVICE_TABLE(of, bme680_of_i2c_match);
 static struct i2c_driver bme680_i2c_driver = {
 	.driver = {
 		.name			= "bme680_i2c",
-		.acpi_match_table       = ACPI_PTR(bme680_acpi_match),
 		.of_match_table		= bme680_of_i2c_match,
 	},
 	.probe = bme680_i2c_probe,
@@ -69,3 +60,4 @@ module_i2c_driver(bme680_i2c_driver);
 MODULE_AUTHOR("Himanshu Jha <himanshujha199640@gmail.com>");
 MODULE_DESCRIPTION("BME680 I2C driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_BME680);
diff --git a/drivers/iio/chemical/bme680_spi.c b/drivers/iio/chemical/bme680_spi.c
index 3b838068a7e4..4404d42ae5ec 100644
--- a/drivers/iio/chemical/bme680_spi.c
+++ b/drivers/iio/chemical/bme680_spi.c
@@ -4,9 +4,8 @@
  *
  * Copyright (C) 2018 Himanshu Jha <himanshujha199640@gmail.com>
  */
-#include <linux/acpi.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
 
@@ -132,8 +131,7 @@ static int bme680_spi_probe(struct spi_device *spi)
 	regmap = devm_regmap_init(&spi->dev, &bme680_regmap_bus,
 				  bus_context, &bme680_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-				(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -146,12 +144,6 @@ static const struct spi_device_id bme680_spi_id[] = {
 };
 MODULE_DEVICE_TABLE(spi, bme680_spi_id);
 
-static const struct acpi_device_id bme680_acpi_match[] = {
-	{"BME0680", 0},
-	{},
-};
-MODULE_DEVICE_TABLE(acpi, bme680_acpi_match);
-
 static const struct of_device_id bme680_of_spi_match[] = {
 	{ .compatible = "bosch,bme680", },
 	{},
@@ -161,7 +153,6 @@ MODULE_DEVICE_TABLE(of, bme680_of_spi_match);
 static struct spi_driver bme680_spi_driver = {
 	.driver = {
 		.name			= "bme680_spi",
-		.acpi_match_table	= ACPI_PTR(bme680_acpi_match),
 		.of_match_table		= bme680_of_spi_match,
 	},
 	.probe = bme680_spi_probe,
@@ -172,3 +163,4 @@ module_spi_driver(bme680_spi_driver);
 MODULE_AUTHOR("Himanshu Jha <himanshujha199640@gmail.com>");
 MODULE_DESCRIPTION("Bosch BME680 SPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_BME680);
diff --git a/drivers/iio/chemical/ccs811.c b/drivers/iio/chemical/ccs811.c
index 2ebdfc35bcda..ba4045e20303 100644
--- a/drivers/iio/chemical/ccs811.c
+++ b/drivers/iio/chemical/ccs811.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -36,6 +37,7 @@
 #define CCS811_ERR		0xE0
 /* Used to transition from boot to application mode */
 #define CCS811_APP_START	0xF4
+#define CCS811_SW_RESET		0xFF
 
 /* Status register flags */
 #define CCS811_STATUS_ERROR		BIT(0)
@@ -74,7 +76,13 @@ struct ccs811_data {
 	struct mutex lock; /* Protect readings */
 	struct ccs811_reading buffer;
 	struct iio_trigger *drdy_trig;
+	struct gpio_desc *wakeup_gpio;
 	bool drdy_trig_on;
+	/* Ensures correct alignment of timestamp if present */
+	struct {
+		s16 channels[2];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 static const struct iio_chan_spec ccs811_channels[] = {
@@ -166,10 +174,25 @@ static int ccs811_setup(struct i2c_client *client)
 					 CCS811_MODE_IAQ_1SEC);
 }
 
+static void ccs811_set_wakeup(struct ccs811_data *data, bool enable)
+{
+	if (!data->wakeup_gpio)
+		return;
+
+	gpiod_set_value(data->wakeup_gpio, enable);
+
+	if (enable)
+		usleep_range(50, 60);
+	else
+		usleep_range(20, 30);
+}
+
 static int ccs811_get_measurement(struct ccs811_data *data)
 {
 	int ret, tries = 11;
 
+	ccs811_set_wakeup(data, true);
+
 	/* Maximum waiting time: 1s, as measurements are made every second */
 	while (tries-- > 0) {
 		ret = i2c_smbus_read_byte_data(data->client, CCS811_STATUS);
@@ -183,9 +206,12 @@ static int ccs811_get_measurement(struct ccs811_data *data)
 	if (!(ret & CCS811_STATUS_DATA_READY))
 		return -EIO;
 
-	return i2c_smbus_read_i2c_block_data(data->client,
+	ret = i2c_smbus_read_i2c_block_data(data->client,
 					    CCS811_ALG_RESULT_DATA, 8,
 					    (char *)&data->buffer);
+	ccs811_set_wakeup(data, false);
+
+	return ret;
 }
 
 static int ccs811_read_raw(struct iio_dev *indio_dev,
@@ -306,17 +332,17 @@ static irqreturn_t ccs811_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ccs811_data *data = iio_priv(indio_dev);
 	struct i2c_client *client = data->client;
-	s16 buf[8]; /* s16 eCO2 + s16 TVOC + padding + 8 byte timestamp */
 	int ret;
 
-	ret = i2c_smbus_read_i2c_block_data(client, CCS811_ALG_RESULT_DATA, 4,
-					    (u8 *)&buf);
+	ret = i2c_smbus_read_i2c_block_data(client, CCS811_ALG_RESULT_DATA,
+					    sizeof(data->scan.channels),
+					    (u8 *)data->scan.channels);
 	if (ret != 4) {
 		dev_err(&client->dev, "cannot read sensor data\n");
 		goto err;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   iio_get_time_ns(indio_dev));
 
 err:
@@ -336,6 +362,45 @@ static irqreturn_t ccs811_data_rdy_trigger_poll(int irq, void *private)
 	return IRQ_HANDLED;
 }
 
+static int ccs811_reset(struct i2c_client *client)
+{
+	struct gpio_desc *reset_gpio;
+	int ret;
+
+	reset_gpio = devm_gpiod_get_optional(&client->dev, "reset",
+					     GPIOD_OUT_LOW);
+	if (IS_ERR(reset_gpio))
+		return PTR_ERR(reset_gpio);
+
+	/* Try to reset using nRESET pin if available else do SW reset */
+	if (reset_gpio) {
+		gpiod_set_value(reset_gpio, 1);
+		usleep_range(20, 30);
+		gpiod_set_value(reset_gpio, 0);
+	} else {
+		/*
+		 * As per the datasheet, this sequence of values needs to be
+		 * written to the SW_RESET register for triggering the soft
+		 * reset in the device and placing it in boot mode.
+		 */
+		static const u8 reset_seq[] = {
+			0x11, 0xE5, 0x72, 0x8A,
+		};
+
+		ret = i2c_smbus_write_i2c_block_data(client, CCS811_SW_RESET,
+					     sizeof(reset_seq), reset_seq);
+		if (ret < 0) {
+			dev_err(&client->dev, "Failed to reset sensor\n");
+			return ret;
+		}
+	}
+
+	/* tSTART delay required after reset */
+	usleep_range(1000, 2000);
+
+	return 0;
+}
+
 static int ccs811_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -348,40 +413,62 @@ static int ccs811_probe(struct i2c_client *client,
 				     | I2C_FUNC_SMBUS_READ_I2C_BLOCK))
 		return -EOPNOTSUPP;
 
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+
+	data->wakeup_gpio = devm_gpiod_get_optional(&client->dev, "wakeup",
+						    GPIOD_OUT_HIGH);
+	if (IS_ERR(data->wakeup_gpio))
+		return PTR_ERR(data->wakeup_gpio);
+
+	ccs811_set_wakeup(data, true);
+
+	ret = ccs811_reset(client);
+	if (ret) {
+		ccs811_set_wakeup(data, false);
+		return ret;
+	}
+
 	/* Check hardware id (should be 0x81 for this family of devices) */
 	ret = i2c_smbus_read_byte_data(client, CCS811_HW_ID);
-	if (ret < 0)
+	if (ret < 0) {
+		ccs811_set_wakeup(data, false);
 		return ret;
+	}
 
 	if (ret != CCS811_HW_ID_VALUE) {
 		dev_err(&client->dev, "hardware id doesn't match CCS81x\n");
+		ccs811_set_wakeup(data, false);
 		return -ENODEV;
 	}
 
 	ret = i2c_smbus_read_byte_data(client, CCS811_HW_VERSION);
-	if (ret < 0)
+	if (ret < 0) {
+		ccs811_set_wakeup(data, false);
 		return ret;
+	}
 
 	if ((ret & CCS811_HW_VERSION_MASK) != CCS811_HW_VERSION_VALUE) {
 		dev_err(&client->dev, "no CCS811 sensor\n");
+		ccs811_set_wakeup(data, false);
 		return -ENODEV;
 	}
 
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
-	if (!indio_dev)
-		return -ENOMEM;
-
 	ret = ccs811_setup(client);
-	if (ret < 0)
+	if (ret < 0) {
+		ccs811_set_wakeup(data, false);
 		return ret;
+	}
 
-	data = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
-	data->client = client;
+	ccs811_set_wakeup(data, false);
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &ccs811_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -404,20 +491,19 @@ static int ccs811_probe(struct i2c_client *client,
 		data->drdy_trig = devm_iio_trigger_alloc(&client->dev,
 							 "%s-dev%d",
 							 indio_dev->name,
-							 indio_dev->id);
+							 iio_device_id(indio_dev));
 		if (!data->drdy_trig) {
 			ret = -ENOMEM;
 			goto err_poweroff;
 		}
 
-		data->drdy_trig->dev.parent = &client->dev;
 		data->drdy_trig->ops = &ccs811_trigger_ops;
 		iio_trigger_set_drvdata(data->drdy_trig, indio_dev);
-		indio_dev->trig = data->drdy_trig;
-		iio_trigger_get(indio_dev->trig);
 		ret = iio_trigger_register(data->drdy_trig);
 		if (ret)
 			goto err_poweroff;
+
+		indio_dev->trig = iio_trigger_get(data->drdy_trig);
 	}
 
 	ret = iio_triggered_buffer_setup(indio_dev, NULL,
@@ -446,18 +532,22 @@ err_poweroff:
 	return ret;
 }
 
-static int ccs811_remove(struct i2c_client *client)
+static void ccs811_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ccs811_data *data = iio_priv(indio_dev);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	if (data->drdy_trig)
 		iio_trigger_unregister(data->drdy_trig);
 
-	return i2c_smbus_write_byte_data(client, CCS811_MEAS_MODE,
-					 CCS811_MODE_IDLE);
+	ret = i2c_smbus_write_byte_data(client, CCS811_MEAS_MODE,
+					CCS811_MODE_IDLE);
+	if (ret)
+		dev_warn(&client->dev, "Failed to power down device (%pe)\n",
+			 ERR_PTR(ret));
 }
 
 static const struct i2c_device_id ccs811_id[] = {
@@ -466,9 +556,16 @@ static const struct i2c_device_id ccs811_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, ccs811_id);
 
+static const struct of_device_id ccs811_dt_ids[] = {
+	{ .compatible = "ams,ccs811" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ccs811_dt_ids);
+
 static struct i2c_driver ccs811_driver = {
 	.driver = {
 		.name = "ccs811",
+		.of_match_table = ccs811_dt_ids,
 	},
 	.probe = ccs811_probe,
 	.remove = ccs811_remove,
diff --git a/drivers/iio/chemical/pms7003.c b/drivers/iio/chemical/pms7003.c
index 23c9ab252470..e9857d93b307 100644
--- a/drivers/iio/chemical/pms7003.c
+++ b/drivers/iio/chemical/pms7003.c
@@ -73,6 +73,11 @@ struct pms7003_state {
 	struct pms7003_frame frame;
 	struct completion frame_ready;
 	struct mutex lock; /* must be held whenever state gets touched */
+	/* Used to construct scan to push to the IIO buffer */
+	struct {
+		u16 data[3]; /* PM1, PM2P5, PM10 */
+		s64 ts;
+	} scan;
 };
 
 static int pms7003_do_cmd(struct pms7003_state *state, enum pms7003_cmd cmd)
@@ -104,7 +109,6 @@ static irqreturn_t pms7003_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct pms7003_state *state = iio_priv(indio_dev);
 	struct pms7003_frame *frame = &state->frame;
-	u16 data[3 + 1 + 4]; /* PM1, PM2P5, PM10, padding, timestamp */
 	int ret;
 
 	mutex_lock(&state->lock);
@@ -114,12 +118,15 @@ static irqreturn_t pms7003_trigger_handler(int irq, void *p)
 		goto err;
 	}
 
-	data[PM1] = pms7003_get_pm(frame->data + PMS7003_PM1_OFFSET);
-	data[PM2P5] = pms7003_get_pm(frame->data + PMS7003_PM2P5_OFFSET);
-	data[PM10] = pms7003_get_pm(frame->data + PMS7003_PM10_OFFSET);
+	state->scan.data[PM1] =
+		pms7003_get_pm(frame->data + PMS7003_PM1_OFFSET);
+	state->scan.data[PM2P5] =
+		pms7003_get_pm(frame->data + PMS7003_PM2P5_OFFSET);
+	state->scan.data[PM10] =
+		pms7003_get_pm(frame->data + PMS7003_PM10_OFFSET);
 	mutex_unlock(&state->lock);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, &state->scan,
 					   iio_get_time_ns(indio_dev));
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -273,10 +280,9 @@ static int pms7003_probe(struct serdev_device *serdev)
 	state = iio_priv(indio_dev);
 	serdev_device_set_drvdata(serdev, indio_dev);
 	state->serdev = serdev;
-	indio_dev->dev.parent = &serdev->dev;
 	indio_dev->info = &pms7003_info;
 	indio_dev->name = PMS7003_DRIVER_NAME;
-	indio_dev->channels = pms7003_channels,
+	indio_dev->channels = pms7003_channels;
 	indio_dev->num_channels = ARRAY_SIZE(pms7003_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->available_scan_masks = pms7003_scan_masks;
diff --git a/drivers/iio/chemical/scd30.h b/drivers/iio/chemical/scd30.h
new file mode 100644
index 000000000000..1ac9f3f79271
--- /dev/null
+++ b/drivers/iio/chemical/scd30.h
@@ -0,0 +1,75 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SCD30_H
+#define _SCD30_H
+
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/regulator/consumer.h>
+#include <linux/types.h>
+
+struct scd30_state;
+
+enum scd30_cmd {
+	/* start continuous measurement with pressure compensation */
+	CMD_START_MEAS,
+	/* stop continuous measurement */
+	CMD_STOP_MEAS,
+	/* set/get measurement interval */
+	CMD_MEAS_INTERVAL,
+	/* check whether new measurement is ready */
+	CMD_MEAS_READY,
+	/* get measurement */
+	CMD_READ_MEAS,
+	/* turn on/off automatic self calibration */
+	CMD_ASC,
+	/* set/get forced recalibration value */
+	CMD_FRC,
+	/* set/get temperature offset */
+	CMD_TEMP_OFFSET,
+	/* get firmware version */
+	CMD_FW_VERSION,
+	/* reset sensor */
+	CMD_RESET,
+	/*
+	 * Command for altitude compensation was omitted intentionally because
+	 * the same can be achieved by means of CMD_START_MEAS which takes
+	 * pressure above the sea level as an argument.
+	 */
+};
+
+#define SCD30_MEAS_COUNT 3
+
+typedef int (*scd30_command_t)(struct scd30_state *state, enum scd30_cmd cmd, u16 arg,
+			       void *response, int size);
+
+struct scd30_state {
+	/* serialize access to the device */
+	struct mutex lock;
+	struct device *dev;
+	struct regulator *vdd;
+	struct completion meas_ready;
+	/*
+	 * priv pointer is solely for serdev driver private data. We keep it
+	 * here because driver_data inside dev has been already used for iio and
+	 * struct serdev_device doesn't have one.
+	 */
+	void *priv;
+	int irq;
+	/*
+	 * no way to retrieve current ambient pressure compensation value from
+	 * the sensor so keep one around
+	 */
+	u16 pressure_comp;
+	u16 meas_interval;
+	int meas[SCD30_MEAS_COUNT];
+
+	scd30_command_t command;
+};
+
+extern const struct dev_pm_ops scd30_pm_ops;
+
+int scd30_probe(struct device *dev, int irq, const char *name, void *priv, scd30_command_t command);
+
+#endif
diff --git a/drivers/iio/chemical/scd30_core.c b/drivers/iio/chemical/scd30_core.c
new file mode 100644
index 000000000000..682fca39d14d
--- /dev/null
+++ b/drivers/iio/chemical/scd30_core.c
@@ -0,0 +1,766 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sensirion SCD30 carbon dioxide sensor core driver
+ *
+ * Copyright (c) 2020 Tomasz Duszynski <tomasz.duszynski@octakon.com>
+ */
+#include <linux/bits.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/export.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/types.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
+#include <linux/string.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+#include <asm/byteorder.h>
+
+#include "scd30.h"
+
+#define SCD30_PRESSURE_COMP_MIN_MBAR 700
+#define SCD30_PRESSURE_COMP_MAX_MBAR 1400
+#define SCD30_PRESSURE_COMP_DEFAULT 1013
+#define SCD30_MEAS_INTERVAL_MIN_S 2
+#define SCD30_MEAS_INTERVAL_MAX_S 1800
+#define SCD30_MEAS_INTERVAL_DEFAULT SCD30_MEAS_INTERVAL_MIN_S
+#define SCD30_FRC_MIN_PPM 400
+#define SCD30_FRC_MAX_PPM 2000
+#define SCD30_TEMP_OFFSET_MAX 655360
+#define SCD30_EXTRA_TIMEOUT_PER_S 250
+
+enum {
+	SCD30_CONC,
+	SCD30_TEMP,
+	SCD30_HR,
+};
+
+static int scd30_command_write(struct scd30_state *state, enum scd30_cmd cmd, u16 arg)
+{
+	return state->command(state, cmd, arg, NULL, 0);
+}
+
+static int scd30_command_read(struct scd30_state *state, enum scd30_cmd cmd, u16 *val)
+{
+	__be16 tmp;
+	int ret;
+
+	ret = state->command(state, cmd, 0, &tmp, sizeof(tmp));
+	*val = be16_to_cpup(&tmp);
+
+	return ret;
+}
+
+static int scd30_reset(struct scd30_state *state)
+{
+	int ret;
+	u16 val;
+
+	ret = scd30_command_write(state, CMD_RESET, 0);
+	if (ret)
+		return ret;
+
+	/* sensor boots up within 2 secs */
+	msleep(2000);
+	/*
+	 * Power-on-reset causes sensor to produce some glitch on i2c bus and
+	 * some controllers end up in error state. Try to recover by placing
+	 * any data on the bus.
+	 */
+	scd30_command_read(state, CMD_MEAS_READY, &val);
+
+	return 0;
+}
+
+/* simplified float to fixed point conversion with a scaling factor of 0.01 */
+static int scd30_float_to_fp(int float32)
+{
+	int fraction, shift,
+	    mantissa = float32 & GENMASK(22, 0),
+	    sign = (float32 & BIT(31)) ? -1 : 1,
+	    exp = (float32 & ~BIT(31)) >> 23;
+
+	/* special case 0 */
+	if (!exp && !mantissa)
+		return 0;
+
+	exp -= 127;
+	if (exp < 0) {
+		exp = -exp;
+		/* return values ranging from 1 to 99 */
+		return sign * ((((BIT(23) + mantissa) * 100) >> 23) >> exp);
+	}
+
+	/* return values starting at 100 */
+	shift = 23 - exp;
+	float32 = BIT(exp) + (mantissa >> shift);
+	fraction = mantissa & GENMASK(shift - 1, 0);
+
+	return sign * (float32 * 100 + ((fraction * 100) >> shift));
+}
+
+static int scd30_read_meas(struct scd30_state *state)
+{
+	int i, ret;
+
+	ret = state->command(state, CMD_READ_MEAS, 0, state->meas, sizeof(state->meas));
+	if (ret)
+		return ret;
+
+	be32_to_cpu_array(state->meas, (__be32 *)state->meas, ARRAY_SIZE(state->meas));
+
+	for (i = 0; i < ARRAY_SIZE(state->meas); i++)
+		state->meas[i] = scd30_float_to_fp(state->meas[i]);
+
+	/*
+	 * co2 is left unprocessed while temperature and humidity are scaled
+	 * to milli deg C and milli percent respectively.
+	 */
+	state->meas[SCD30_TEMP] *= 10;
+	state->meas[SCD30_HR] *= 10;
+
+	return 0;
+}
+
+static int scd30_wait_meas_irq(struct scd30_state *state)
+{
+	int ret, timeout;
+
+	reinit_completion(&state->meas_ready);
+	enable_irq(state->irq);
+	timeout = msecs_to_jiffies(state->meas_interval * (1000 + SCD30_EXTRA_TIMEOUT_PER_S));
+	ret = wait_for_completion_interruptible_timeout(&state->meas_ready, timeout);
+	if (ret > 0)
+		ret = 0;
+	else if (!ret)
+		ret = -ETIMEDOUT;
+
+	disable_irq(state->irq);
+
+	return ret;
+}
+
+static int scd30_wait_meas_poll(struct scd30_state *state)
+{
+	int timeout = state->meas_interval * SCD30_EXTRA_TIMEOUT_PER_S, tries = 5;
+
+	do {
+		int ret;
+		u16 val;
+
+		ret = scd30_command_read(state, CMD_MEAS_READY, &val);
+		if (ret)
+			return -EIO;
+
+		/* new measurement available */
+		if (val)
+			break;
+
+		msleep_interruptible(timeout);
+	} while (--tries);
+
+	return tries ? 0 : -ETIMEDOUT;
+}
+
+static int scd30_read_poll(struct scd30_state *state)
+{
+	int ret;
+
+	ret = scd30_wait_meas_poll(state);
+	if (ret)
+		return ret;
+
+	return scd30_read_meas(state);
+}
+
+static int scd30_read(struct scd30_state *state)
+{
+	if (state->irq > 0)
+		return scd30_wait_meas_irq(state);
+
+	return scd30_read_poll(state);
+}
+
+static int scd30_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+			  int *val, int *val2, long mask)
+{
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret = -EINVAL;
+	u16 tmp;
+
+	mutex_lock(&state->lock);
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_PROCESSED:
+		if (chan->output) {
+			*val = state->pressure_comp;
+			ret = IIO_VAL_INT;
+			break;
+		}
+
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			break;
+
+		ret = scd30_read(state);
+		if (ret) {
+			iio_device_release_direct_mode(indio_dev);
+			break;
+		}
+
+		*val = state->meas[chan->address];
+		iio_device_release_direct_mode(indio_dev);
+		ret = IIO_VAL_INT;
+		break;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 0;
+		*val2 = 1;
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = scd30_command_read(state, CMD_MEAS_INTERVAL, &tmp);
+		if (ret)
+			break;
+
+		*val = 0;
+		*val2 = 1000000000 / tmp;
+		ret = IIO_VAL_INT_PLUS_NANO;
+		break;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = scd30_command_read(state, CMD_TEMP_OFFSET, &tmp);
+		if (ret)
+			break;
+
+		*val = tmp;
+		ret = IIO_VAL_INT;
+		break;
+	}
+	mutex_unlock(&state->lock);
+
+	return ret;
+}
+
+static int scd30_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+			   int val, int val2, long mask)
+{
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret = -EINVAL;
+
+	mutex_lock(&state->lock);
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (val)
+			break;
+
+		val = 1000000000 / val2;
+		if (val < SCD30_MEAS_INTERVAL_MIN_S || val > SCD30_MEAS_INTERVAL_MAX_S)
+			break;
+
+		ret = scd30_command_write(state, CMD_MEAS_INTERVAL, val);
+		if (ret)
+			break;
+
+		state->meas_interval = val;
+		break;
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_PRESSURE:
+			if (val < SCD30_PRESSURE_COMP_MIN_MBAR ||
+			    val > SCD30_PRESSURE_COMP_MAX_MBAR)
+				break;
+
+			ret = scd30_command_write(state, CMD_START_MEAS, val);
+			if (ret)
+				break;
+
+			state->pressure_comp = val;
+			break;
+		default:
+			break;
+		}
+		break;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		if (val < 0 || val > SCD30_TEMP_OFFSET_MAX)
+			break;
+		/*
+		 * Manufacturer does not explicitly specify min/max sensible
+		 * values hence check is omitted for simplicity.
+		 */
+		ret = scd30_command_write(state, CMD_TEMP_OFFSET / 10, val);
+	}
+	mutex_unlock(&state->lock);
+
+	return ret;
+}
+
+static int scd30_write_raw_get_fmt(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+				   long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return IIO_VAL_INT;
+	}
+
+	return -EINVAL;
+}
+
+static const int scd30_pressure_raw_available[] = {
+	SCD30_PRESSURE_COMP_MIN_MBAR, 1, SCD30_PRESSURE_COMP_MAX_MBAR,
+};
+
+static const int scd30_temp_calibbias_available[] = {
+	0, 10, SCD30_TEMP_OFFSET_MAX,
+};
+
+static int scd30_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+			    const int **vals, int *type, int *length, long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		*vals = scd30_pressure_raw_available;
+		*type = IIO_VAL_INT;
+
+		return IIO_AVAIL_RANGE;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		*vals = scd30_temp_calibbias_available;
+		*type = IIO_VAL_INT;
+
+		return IIO_AVAIL_RANGE;
+	}
+
+	return -EINVAL;
+}
+
+static ssize_t sampling_frequency_available_show(struct device *dev, struct device_attribute *attr,
+						 char *buf)
+{
+	int i = SCD30_MEAS_INTERVAL_MIN_S;
+	ssize_t len = 0;
+
+	do {
+		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09u ", 1000000000 / i);
+		/*
+		 * Not all values fit PAGE_SIZE buffer hence print every 6th
+		 * (each frequency differs by 6s in time domain from the
+		 * adjacent). Unlisted but valid ones are still accepted.
+		 */
+		i += 6;
+	} while (i <= SCD30_MEAS_INTERVAL_MAX_S);
+
+	buf[len - 1] = '\n';
+
+	return len;
+}
+
+static ssize_t calibration_auto_enable_show(struct device *dev, struct device_attribute *attr,
+					    char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret;
+	u16 val;
+
+	mutex_lock(&state->lock);
+	ret = scd30_command_read(state, CMD_ASC, &val);
+	mutex_unlock(&state->lock);
+
+	return ret ?: sprintf(buf, "%d\n", val);
+}
+
+static ssize_t calibration_auto_enable_store(struct device *dev, struct device_attribute *attr,
+					     const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd30_state *state = iio_priv(indio_dev);
+	bool val;
+	int ret;
+
+	ret = kstrtobool(buf, &val);
+	if (ret)
+		return ret;
+
+	mutex_lock(&state->lock);
+	ret = scd30_command_write(state, CMD_ASC, val);
+	mutex_unlock(&state->lock);
+
+	return ret ?: len;
+}
+
+static ssize_t calibration_forced_value_show(struct device *dev, struct device_attribute *attr,
+					     char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret;
+	u16 val;
+
+	mutex_lock(&state->lock);
+	ret = scd30_command_read(state, CMD_FRC, &val);
+	mutex_unlock(&state->lock);
+
+	return ret ?: sprintf(buf, "%d\n", val);
+}
+
+static ssize_t calibration_forced_value_store(struct device *dev, struct device_attribute *attr,
+					      const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret;
+	u16 val;
+
+	ret = kstrtou16(buf, 0, &val);
+	if (ret)
+		return ret;
+
+	if (val < SCD30_FRC_MIN_PPM || val > SCD30_FRC_MAX_PPM)
+		return -EINVAL;
+
+	mutex_lock(&state->lock);
+	ret = scd30_command_write(state, CMD_FRC, val);
+	mutex_unlock(&state->lock);
+
+	return ret ?: len;
+}
+
+static IIO_DEVICE_ATTR_RO(sampling_frequency_available, 0);
+static IIO_DEVICE_ATTR_RW(calibration_auto_enable, 0);
+static IIO_DEVICE_ATTR_RW(calibration_forced_value, 0);
+
+static struct attribute *scd30_attrs[] = {
+	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
+	&iio_dev_attr_calibration_auto_enable.dev_attr.attr,
+	&iio_dev_attr_calibration_forced_value.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group scd30_attr_group = {
+	.attrs = scd30_attrs,
+};
+
+static const struct iio_info scd30_info = {
+	.attrs = &scd30_attr_group,
+	.read_raw = scd30_read_raw,
+	.write_raw = scd30_write_raw,
+	.write_raw_get_fmt = scd30_write_raw_get_fmt,
+	.read_avail = scd30_read_avail,
+};
+
+#define SCD30_CHAN_SCAN_TYPE(_sign, _realbits) .scan_type = { \
+	.sign = _sign, \
+	.realbits = _realbits, \
+	.storagebits = 32, \
+	.endianness = IIO_CPU, \
+}
+
+static const struct iio_chan_spec scd30_channels[] = {
+	{
+		/*
+		 * this channel is special in a sense we are pretending that
+		 * sensor is able to change measurement chamber pressure but in
+		 * fact we're just setting pressure compensation value
+		 */
+		.type = IIO_PRESSURE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW),
+		.output = 1,
+		.scan_index = -1,
+	},
+	{
+		.type = IIO_CONCENTRATION,
+		.channel2 = IIO_MOD_CO2,
+		.address = SCD30_CONC,
+		.scan_index = SCD30_CONC,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.modified = 1,
+
+		SCD30_CHAN_SCAN_TYPE('u', 20),
+	},
+	{
+		.type = IIO_TEMP,
+		.address = SCD30_TEMP,
+		.scan_index = SCD30_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_CALIBBIAS),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_CALIBBIAS),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+
+		SCD30_CHAN_SCAN_TYPE('s', 18),
+	},
+	{
+		.type = IIO_HUMIDITYRELATIVE,
+		.address = SCD30_HR,
+		.scan_index = SCD30_HR,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+
+		SCD30_CHAN_SCAN_TYPE('u', 17),
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(3),
+};
+
+static int scd30_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct scd30_state *state  = iio_priv(indio_dev);
+	int ret;
+
+	ret = scd30_command_write(state, CMD_STOP_MEAS, 0);
+	if (ret)
+		return ret;
+
+	return regulator_disable(state->vdd);
+}
+
+static int scd30_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret;
+
+	ret = regulator_enable(state->vdd);
+	if (ret)
+		return ret;
+
+	return scd30_command_write(state, CMD_START_MEAS, state->pressure_comp);
+}
+
+EXPORT_NS_SIMPLE_DEV_PM_OPS(scd30_pm_ops, scd30_suspend, scd30_resume, IIO_SCD30);
+
+static void scd30_stop_meas(void *data)
+{
+	struct scd30_state *state = data;
+
+	scd30_command_write(state, CMD_STOP_MEAS, 0);
+}
+
+static void scd30_disable_regulator(void *data)
+{
+	struct scd30_state *state = data;
+
+	regulator_disable(state->vdd);
+}
+
+static irqreturn_t scd30_irq_handler(int irq, void *priv)
+{
+	struct iio_dev *indio_dev = priv;
+
+	if (iio_buffer_enabled(indio_dev)) {
+		iio_trigger_poll(indio_dev->trig);
+
+		return IRQ_HANDLED;
+	}
+
+	return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t scd30_irq_thread_handler(int irq, void *priv)
+{
+	struct iio_dev *indio_dev = priv;
+	struct scd30_state *state = iio_priv(indio_dev);
+	int ret;
+
+	ret = scd30_read_meas(state);
+	if (ret)
+		goto out;
+
+	complete_all(&state->meas_ready);
+out:
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t scd30_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct scd30_state *state = iio_priv(indio_dev);
+	struct {
+		int data[SCD30_MEAS_COUNT];
+		s64 ts __aligned(8);
+	} scan;
+	int ret;
+
+	mutex_lock(&state->lock);
+	if (!iio_trigger_using_own(indio_dev))
+		ret = scd30_read_poll(state);
+	else
+		ret = scd30_read_meas(state);
+	memset(&scan, 0, sizeof(scan));
+	memcpy(scan.data, state->meas, sizeof(state->meas));
+	mutex_unlock(&state->lock);
+	if (ret)
+		goto out;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan, iio_get_time_ns(indio_dev));
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+	return IRQ_HANDLED;
+}
+
+static int scd30_set_trigger_state(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct scd30_state *st = iio_priv(indio_dev);
+
+	if (state)
+		enable_irq(st->irq);
+	else
+		disable_irq(st->irq);
+
+	return 0;
+}
+
+static const struct iio_trigger_ops scd30_trigger_ops = {
+	.set_trigger_state = scd30_set_trigger_state,
+	.validate_device = iio_trigger_validate_own_device,
+};
+
+static int scd30_setup_trigger(struct iio_dev *indio_dev)
+{
+	struct scd30_state *state = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
+	struct iio_trigger *trig;
+	int ret;
+
+	trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
+				      iio_device_id(indio_dev));
+	if (!trig) {
+		dev_err(dev, "failed to allocate trigger\n");
+		return -ENOMEM;
+	}
+
+	trig->ops = &scd30_trigger_ops;
+	iio_trigger_set_drvdata(trig, indio_dev);
+
+	ret = devm_iio_trigger_register(dev, trig);
+	if (ret)
+		return ret;
+
+	indio_dev->trig = iio_trigger_get(trig);
+
+	/*
+	 * Interrupt is enabled just before taking a fresh measurement
+	 * and disabled afterwards. This means we need to ensure it is not
+	 * enabled here to keep calls to enable/disable balanced.
+	 */
+	ret = devm_request_threaded_irq(dev, state->irq, scd30_irq_handler,
+					scd30_irq_thread_handler,
+					IRQF_TRIGGER_HIGH | IRQF_ONESHOT |
+					IRQF_NO_AUTOEN,
+					indio_dev->name, indio_dev);
+	if (ret)
+		dev_err(dev, "failed to request irq\n");
+
+	return ret;
+}
+
+int scd30_probe(struct device *dev, int irq, const char *name, void *priv,
+		scd30_command_t command)
+{
+	static const unsigned long scd30_scan_masks[] = { 0x07, 0x00 };
+	struct scd30_state *state;
+	struct iio_dev *indio_dev;
+	int ret;
+	u16 val;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*state));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	state = iio_priv(indio_dev);
+	state->dev = dev;
+	state->priv = priv;
+	state->irq = irq;
+	state->pressure_comp = SCD30_PRESSURE_COMP_DEFAULT;
+	state->meas_interval = SCD30_MEAS_INTERVAL_DEFAULT;
+	state->command = command;
+	mutex_init(&state->lock);
+	init_completion(&state->meas_ready);
+
+	dev_set_drvdata(dev, indio_dev);
+
+	indio_dev->info = &scd30_info;
+	indio_dev->name = name;
+	indio_dev->channels = scd30_channels;
+	indio_dev->num_channels = ARRAY_SIZE(scd30_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->available_scan_masks = scd30_scan_masks;
+
+	state->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(state->vdd))
+		return dev_err_probe(dev, PTR_ERR(state->vdd), "failed to get regulator\n");
+
+	ret = regulator_enable(state->vdd);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, scd30_disable_regulator, state);
+	if (ret)
+		return ret;
+
+	ret = scd30_reset(state);
+	if (ret) {
+		dev_err(dev, "failed to reset device: %d\n", ret);
+		return ret;
+	}
+
+	if (state->irq > 0) {
+		ret = scd30_setup_trigger(indio_dev);
+		if (ret) {
+			dev_err(dev, "failed to setup trigger: %d\n", ret);
+			return ret;
+		}
+	}
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, scd30_trigger_handler, NULL);
+	if (ret)
+		return ret;
+
+	ret = scd30_command_read(state, CMD_FW_VERSION, &val);
+	if (ret) {
+		dev_err(dev, "failed to read firmware version: %d\n", ret);
+		return ret;
+	}
+	dev_info(dev, "firmware version: %d.%d\n", val >> 8, (char)val);
+
+	ret = scd30_command_write(state, CMD_MEAS_INTERVAL, state->meas_interval);
+	if (ret) {
+		dev_err(dev, "failed to set measurement interval: %d\n", ret);
+		return ret;
+	}
+
+	ret = scd30_command_write(state, CMD_START_MEAS, state->pressure_comp);
+	if (ret) {
+		dev_err(dev, "failed to start measurement: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(dev, scd30_stop_meas, state);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_NS(scd30_probe, IIO_SCD30);
+
+MODULE_AUTHOR("Tomasz Duszynski <tomasz.duszynski@octakon.com>");
+MODULE_DESCRIPTION("Sensirion SCD30 carbon dioxide sensor core driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/chemical/scd30_i2c.c b/drivers/iio/chemical/scd30_i2c.c
new file mode 100644
index 000000000000..bae479a4721f
--- /dev/null
+++ b/drivers/iio/chemical/scd30_i2c.c
@@ -0,0 +1,140 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sensirion SCD30 carbon dioxide sensor i2c driver
+ *
+ * Copyright (c) 2020 Tomasz Duszynski <tomasz.duszynski@octakon.com>
+ *
+ * I2C slave address: 0x61
+ */
+#include <linux/crc8.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <asm/unaligned.h>
+
+#include "scd30.h"
+
+#define SCD30_I2C_MAX_BUF_SIZE 18
+#define SCD30_I2C_CRC8_POLYNOMIAL 0x31
+
+static u16 scd30_i2c_cmd_lookup_tbl[] = {
+	[CMD_START_MEAS] = 0x0010,
+	[CMD_STOP_MEAS] = 0x0104,
+	[CMD_MEAS_INTERVAL] = 0x4600,
+	[CMD_MEAS_READY] = 0x0202,
+	[CMD_READ_MEAS] = 0x0300,
+	[CMD_ASC] = 0x5306,
+	[CMD_FRC] = 0x5204,
+	[CMD_TEMP_OFFSET] = 0x5403,
+	[CMD_FW_VERSION] = 0xd100,
+	[CMD_RESET] = 0xd304,
+};
+
+DECLARE_CRC8_TABLE(scd30_i2c_crc8_tbl);
+
+static int scd30_i2c_xfer(struct scd30_state *state, char *txbuf, int txsize,
+			  char *rxbuf, int rxsize)
+{
+	struct i2c_client *client = to_i2c_client(state->dev);
+	int ret;
+
+	/*
+	 * repeated start is not supported hence instead of sending two i2c
+	 * messages in a row we send one by one
+	 */
+	ret = i2c_master_send(client, txbuf, txsize);
+	if (ret < 0)
+		return ret;
+	if (ret != txsize)
+		return -EIO;
+
+	if (!rxbuf)
+		return 0;
+
+	ret = i2c_master_recv(client, rxbuf, rxsize);
+	if (ret < 0)
+		return ret;
+	if (ret != rxsize)
+		return -EIO;
+
+	return 0;
+}
+
+static int scd30_i2c_command(struct scd30_state *state, enum scd30_cmd cmd, u16 arg,
+			     void *response, int size)
+{
+	char buf[SCD30_I2C_MAX_BUF_SIZE];
+	char *rsp = response;
+	int i, ret;
+	char crc;
+
+	put_unaligned_be16(scd30_i2c_cmd_lookup_tbl[cmd], buf);
+	i = 2;
+
+	if (rsp) {
+		/* each two bytes are followed by a crc8 */
+		size += size / 2;
+	} else {
+		put_unaligned_be16(arg, buf + i);
+		crc = crc8(scd30_i2c_crc8_tbl, buf + i, 2, CRC8_INIT_VALUE);
+		i += 2;
+		buf[i] = crc;
+		i += 1;
+
+		/* commands below don't take an argument */
+		if ((cmd == CMD_STOP_MEAS) || (cmd == CMD_RESET))
+			i -= 3;
+	}
+
+	ret = scd30_i2c_xfer(state, buf, i, buf, size);
+	if (ret)
+		return ret;
+
+	/* validate received data and strip off crc bytes */
+	for (i = 0; i < size; i += 3) {
+		crc = crc8(scd30_i2c_crc8_tbl, buf + i, 2, CRC8_INIT_VALUE);
+		if (crc != buf[i + 2]) {
+			dev_err(state->dev, "data integrity check failed\n");
+			return -EIO;
+		}
+
+		*rsp++ = buf[i];
+		*rsp++ = buf[i + 1];
+	}
+
+	return 0;
+}
+
+static int scd30_i2c_probe(struct i2c_client *client)
+{
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+		return -EOPNOTSUPP;
+
+	crc8_populate_msb(scd30_i2c_crc8_tbl, SCD30_I2C_CRC8_POLYNOMIAL);
+
+	return scd30_probe(&client->dev, client->irq, client->name, NULL, scd30_i2c_command);
+}
+
+static const struct of_device_id scd30_i2c_of_match[] = {
+	{ .compatible = "sensirion,scd30" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, scd30_i2c_of_match);
+
+static struct i2c_driver scd30_i2c_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = scd30_i2c_of_match,
+		.pm = pm_sleep_ptr(&scd30_pm_ops),
+	},
+	.probe_new = scd30_i2c_probe,
+};
+module_i2c_driver(scd30_i2c_driver);
+
+MODULE_AUTHOR("Tomasz Duszynski <tomasz.duszynski@octakon.com>");
+MODULE_DESCRIPTION("Sensirion SCD30 carbon dioxide sensor i2c driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_SCD30);
diff --git a/drivers/iio/chemical/scd30_serial.c b/drivers/iio/chemical/scd30_serial.c
new file mode 100644
index 000000000000..3c519103d30b
--- /dev/null
+++ b/drivers/iio/chemical/scd30_serial.c
@@ -0,0 +1,264 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sensirion SCD30 carbon dioxide sensor serial driver
+ *
+ * Copyright (c) 2020 Tomasz Duszynski <tomasz.duszynski@octakon.com>
+ */
+#include <linux/crc16.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/iio/iio.h>
+#include <linux/jiffies.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/serdev.h>
+#include <linux/string.h>
+#include <linux/types.h>
+#include <asm/unaligned.h>
+
+#include "scd30.h"
+
+#define SCD30_SERDEV_ADDR 0x61
+#define SCD30_SERDEV_WRITE 0x06
+#define SCD30_SERDEV_READ 0x03
+#define SCD30_SERDEV_MAX_BUF_SIZE 17
+#define SCD30_SERDEV_RX_HEADER_SIZE 3
+#define SCD30_SERDEV_CRC_SIZE 2
+#define SCD30_SERDEV_TIMEOUT msecs_to_jiffies(200)
+
+struct scd30_serdev_priv {
+	struct completion meas_ready;
+	char *buf;
+	int num_expected;
+	int num;
+};
+
+static u16 scd30_serdev_cmd_lookup_tbl[] = {
+	[CMD_START_MEAS] = 0x0036,
+	[CMD_STOP_MEAS] = 0x0037,
+	[CMD_MEAS_INTERVAL] = 0x0025,
+	[CMD_MEAS_READY] = 0x0027,
+	[CMD_READ_MEAS] = 0x0028,
+	[CMD_ASC] = 0x003a,
+	[CMD_FRC] = 0x0039,
+	[CMD_TEMP_OFFSET] = 0x003b,
+	[CMD_FW_VERSION] = 0x0020,
+	[CMD_RESET] = 0x0034,
+};
+
+static u16 scd30_serdev_calc_crc(const char *buf, int size)
+{
+	return crc16(0xffff, buf, size);
+}
+
+static int scd30_serdev_xfer(struct scd30_state *state, char *txbuf, int txsize,
+			     char *rxbuf, int rxsize)
+{
+	struct serdev_device *serdev = to_serdev_device(state->dev);
+	struct scd30_serdev_priv *priv = state->priv;
+	int ret;
+
+	priv->buf = rxbuf;
+	priv->num_expected = rxsize;
+	priv->num = 0;
+
+	ret = serdev_device_write(serdev, txbuf, txsize, SCD30_SERDEV_TIMEOUT);
+	if (ret < 0)
+		return ret;
+	if (ret != txsize)
+		return -EIO;
+
+	ret = wait_for_completion_interruptible_timeout(&priv->meas_ready, SCD30_SERDEV_TIMEOUT);
+	if (ret < 0)
+		return ret;
+	if (!ret)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static int scd30_serdev_command(struct scd30_state *state, enum scd30_cmd cmd, u16 arg,
+				void *response, int size)
+{
+	/*
+	 * Communication over serial line is based on modbus protocol (or rather
+	 * its variation called modbus over serial to be precise). Upon
+	 * receiving a request device should reply with response.
+	 *
+	 * Frame below represents a request message. Each field takes
+	 * exactly one byte.
+	 *
+	 * +------+------+-----+-----+-------+-------+-----+-----+
+	 * | dev  | op   | reg | reg | byte1 | byte0 | crc | crc |
+	 * | addr | code | msb | lsb |       |       | lsb | msb |
+	 * +------+------+-----+-----+-------+-------+-----+-----+
+	 *
+	 * The message device replies with depends on the 'op code' field from
+	 * the request. In case it was set to SCD30_SERDEV_WRITE sensor should
+	 * reply with unchanged request. Otherwise 'op code' was set to
+	 * SCD30_SERDEV_READ and response looks like the one below. As with
+	 * request, each field takes one byte.
+	 *
+	 * +------+------+--------+-------+-----+-------+-----+-----+
+	 * | dev  | op   | num of | byte0 | ... | byteN | crc | crc |
+	 * | addr | code | bytes  |       |     |       | lsb | msb |
+	 * +------+------+--------+-------+-----+-------+-----+-----+
+	 */
+	char txbuf[SCD30_SERDEV_MAX_BUF_SIZE] = { SCD30_SERDEV_ADDR },
+	     rxbuf[SCD30_SERDEV_MAX_BUF_SIZE];
+	int ret, rxsize, txsize = 2;
+	char *rsp = response;
+	u16 crc;
+
+	put_unaligned_be16(scd30_serdev_cmd_lookup_tbl[cmd], txbuf + txsize);
+	txsize += 2;
+
+	if (rsp) {
+		txbuf[1] = SCD30_SERDEV_READ;
+		if (cmd == CMD_READ_MEAS)
+			/* number of u16 words to read */
+			put_unaligned_be16(size / 2, txbuf + txsize);
+		else
+			put_unaligned_be16(0x0001, txbuf + txsize);
+		txsize += 2;
+		crc = scd30_serdev_calc_crc(txbuf, txsize);
+		put_unaligned_le16(crc, txbuf + txsize);
+		txsize += 2;
+		rxsize = SCD30_SERDEV_RX_HEADER_SIZE + size + SCD30_SERDEV_CRC_SIZE;
+	} else {
+		if ((cmd == CMD_STOP_MEAS) || (cmd == CMD_RESET))
+			arg = 0x0001;
+
+		txbuf[1] = SCD30_SERDEV_WRITE;
+		put_unaligned_be16(arg, txbuf + txsize);
+		txsize += 2;
+		crc = scd30_serdev_calc_crc(txbuf, txsize);
+		put_unaligned_le16(crc, txbuf + txsize);
+		txsize += 2;
+		rxsize = txsize;
+	}
+
+	ret = scd30_serdev_xfer(state, txbuf, txsize, rxbuf, rxsize);
+	if (ret)
+		return ret;
+
+	switch (txbuf[1]) {
+	case SCD30_SERDEV_WRITE:
+		if (memcmp(txbuf, rxbuf, txsize)) {
+			dev_err(state->dev, "wrong message received\n");
+			return -EIO;
+		}
+		break;
+	case SCD30_SERDEV_READ:
+		if (rxbuf[2] != (rxsize - SCD30_SERDEV_RX_HEADER_SIZE - SCD30_SERDEV_CRC_SIZE)) {
+			dev_err(state->dev, "received data size does not match header\n");
+			return -EIO;
+		}
+
+		rxsize -= SCD30_SERDEV_CRC_SIZE;
+		crc = get_unaligned_le16(rxbuf + rxsize);
+		if (crc != scd30_serdev_calc_crc(rxbuf, rxsize)) {
+			dev_err(state->dev, "data integrity check failed\n");
+			return -EIO;
+		}
+
+		rxsize -= SCD30_SERDEV_RX_HEADER_SIZE;
+		memcpy(rsp, rxbuf + SCD30_SERDEV_RX_HEADER_SIZE, rxsize);
+		break;
+	default:
+		dev_err(state->dev, "received unknown op code\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int scd30_serdev_receive_buf(struct serdev_device *serdev,
+				    const unsigned char *buf, size_t size)
+{
+	struct iio_dev *indio_dev = serdev_device_get_drvdata(serdev);
+	struct scd30_serdev_priv *priv;
+	struct scd30_state *state;
+	int num;
+
+	if (!indio_dev)
+		return 0;
+
+	state = iio_priv(indio_dev);
+	priv = state->priv;
+
+	/* just in case sensor puts some unexpected bytes on the bus */
+	if (!priv->buf)
+		return 0;
+
+	if (priv->num + size >= priv->num_expected)
+		num = priv->num_expected - priv->num;
+	else
+		num = size;
+
+	memcpy(priv->buf + priv->num, buf, num);
+	priv->num += num;
+
+	if (priv->num == priv->num_expected) {
+		priv->buf = NULL;
+		complete(&priv->meas_ready);
+	}
+
+	return num;
+}
+
+static const struct serdev_device_ops scd30_serdev_ops = {
+	.receive_buf = scd30_serdev_receive_buf,
+	.write_wakeup = serdev_device_write_wakeup,
+};
+
+static int scd30_serdev_probe(struct serdev_device *serdev)
+{
+	struct device *dev = &serdev->dev;
+	struct scd30_serdev_priv *priv;
+	int irq, ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	init_completion(&priv->meas_ready);
+	serdev_device_set_client_ops(serdev, &scd30_serdev_ops);
+
+	ret = devm_serdev_device_open(dev, serdev);
+	if (ret)
+		return ret;
+
+	serdev_device_set_baudrate(serdev, 19200);
+	serdev_device_set_flow_control(serdev, false);
+
+	ret = serdev_device_set_parity(serdev, SERDEV_PARITY_NONE);
+	if (ret)
+		return ret;
+
+	irq = fwnode_irq_get(dev_fwnode(dev), 0);
+
+	return scd30_probe(dev, irq, KBUILD_MODNAME, priv, scd30_serdev_command);
+}
+
+static const struct of_device_id scd30_serdev_of_match[] = {
+	{ .compatible = "sensirion,scd30" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, scd30_serdev_of_match);
+
+static struct serdev_device_driver scd30_serdev_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = scd30_serdev_of_match,
+		.pm = pm_sleep_ptr(&scd30_pm_ops),
+	},
+	.probe = scd30_serdev_probe,
+};
+module_serdev_device_driver(scd30_serdev_driver);
+
+MODULE_AUTHOR("Tomasz Duszynski <tomasz.duszynski@octakon.com>");
+MODULE_DESCRIPTION("Sensirion SCD30 carbon dioxide sensor serial driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_SCD30);
diff --git a/drivers/iio/chemical/scd4x.c b/drivers/iio/chemical/scd4x.c
new file mode 100644
index 000000000000..54066532ea45
--- /dev/null
+++ b/drivers/iio/chemical/scd4x.c
@@ -0,0 +1,699 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sensirion SCD4X carbon dioxide sensor i2c driver
+ *
+ * Copyright (C) 2021 Protonic Holland
+ * Author: Roan van Dijk <roan@protonic.nl>
+ *
+ * I2C slave address: 0x62
+ *
+ * Datasheets:
+ * https://www.sensirion.com/file/datasheet_scd4x
+ */
+
+#include <asm/unaligned.h>
+#include <linux/crc8.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/types.h>
+#include <linux/kernel.h>
+#include <linux/mutex.h>
+#include <linux/string.h>
+#include <linux/sysfs.h>
+#include <linux/types.h>
+
+#define SCD4X_CRC8_POLYNOMIAL 0x31
+#define SCD4X_TIMEOUT_ERR 1000
+#define SCD4X_READ_BUF_SIZE 9
+#define SCD4X_COMMAND_BUF_SIZE 2
+#define SCD4X_WRITE_BUF_SIZE 5
+#define SCD4X_FRC_MIN_PPM 0
+#define SCD4X_FRC_MAX_PPM 2000
+#define SCD4X_READY_MASK 0x01
+
+/*Commands SCD4X*/
+enum scd4x_cmd {
+	CMD_START_MEAS          = 0x21b1,
+	CMD_READ_MEAS           = 0xec05,
+	CMD_STOP_MEAS           = 0x3f86,
+	CMD_SET_TEMP_OFFSET     = 0x241d,
+	CMD_GET_TEMP_OFFSET     = 0x2318,
+	CMD_FRC                 = 0x362f,
+	CMD_SET_ASC             = 0x2416,
+	CMD_GET_ASC             = 0x2313,
+	CMD_GET_DATA_READY      = 0xe4b8,
+};
+
+enum scd4x_channel_idx {
+	SCD4X_CO2,
+	SCD4X_TEMP,
+	SCD4X_HR,
+};
+
+struct scd4x_state {
+	struct i2c_client *client;
+	/* maintain access to device, to prevent concurrent reads/writes */
+	struct mutex lock;
+	struct regulator *vdd;
+};
+
+DECLARE_CRC8_TABLE(scd4x_crc8_table);
+
+static int scd4x_i2c_xfer(struct scd4x_state *state, char *txbuf, int txsize,
+				char *rxbuf, int rxsize)
+{
+	struct i2c_client *client = state->client;
+	int ret;
+
+	ret = i2c_master_send(client, txbuf, txsize);
+
+	if (ret < 0)
+		return ret;
+	if (ret != txsize)
+		return -EIO;
+
+	if (rxsize == 0)
+		return 0;
+
+	ret = i2c_master_recv(client, rxbuf, rxsize);
+	if (ret < 0)
+		return ret;
+	if (ret != rxsize)
+		return -EIO;
+
+	return 0;
+}
+
+static int scd4x_send_command(struct scd4x_state *state, enum scd4x_cmd cmd)
+{
+	char buf[SCD4X_COMMAND_BUF_SIZE];
+	int ret;
+
+	/*
+	 * Measurement needs to be stopped before sending commands.
+	 * Except stop and start command.
+	 */
+	if ((cmd != CMD_STOP_MEAS) && (cmd != CMD_START_MEAS)) {
+
+		ret = scd4x_send_command(state, CMD_STOP_MEAS);
+		if (ret)
+			return ret;
+
+		/* execution time for stopping measurement */
+		msleep_interruptible(500);
+	}
+
+	put_unaligned_be16(cmd, buf);
+	ret = scd4x_i2c_xfer(state, buf, 2, buf, 0);
+	if (ret)
+		return ret;
+
+	if ((cmd != CMD_STOP_MEAS) && (cmd != CMD_START_MEAS)) {
+		ret = scd4x_send_command(state, CMD_START_MEAS);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int scd4x_read(struct scd4x_state *state, enum scd4x_cmd cmd,
+			void *response, int response_sz)
+{
+	struct i2c_client *client = state->client;
+	char buf[SCD4X_READ_BUF_SIZE];
+	char *rsp = response;
+	int i, ret;
+	char crc;
+
+	/*
+	 * Measurement needs to be stopped before sending commands.
+	 * Except for reading measurement and data ready command.
+	 */
+	if ((cmd != CMD_GET_DATA_READY) && (cmd != CMD_READ_MEAS)) {
+		ret = scd4x_send_command(state, CMD_STOP_MEAS);
+		if (ret)
+			return ret;
+
+		/* execution time for stopping measurement */
+		msleep_interruptible(500);
+	}
+
+	/* CRC byte for every 2 bytes of data */
+	response_sz += response_sz / 2;
+
+	put_unaligned_be16(cmd, buf);
+	ret = scd4x_i2c_xfer(state, buf, 2, buf, response_sz);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < response_sz; i += 3) {
+		crc = crc8(scd4x_crc8_table, buf + i, 2, CRC8_INIT_VALUE);
+		if (crc != buf[i + 2]) {
+			dev_err(&client->dev, "CRC error\n");
+			return -EIO;
+		}
+
+		*rsp++ = buf[i];
+		*rsp++ = buf[i + 1];
+	}
+
+	/* start measurement */
+	if ((cmd != CMD_GET_DATA_READY) && (cmd != CMD_READ_MEAS)) {
+		ret = scd4x_send_command(state, CMD_START_MEAS);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int scd4x_write(struct scd4x_state *state, enum scd4x_cmd cmd, uint16_t arg)
+{
+	char buf[SCD4X_WRITE_BUF_SIZE];
+	int ret;
+	char crc;
+
+	put_unaligned_be16(cmd, buf);
+	put_unaligned_be16(arg, buf + 2);
+
+	crc = crc8(scd4x_crc8_table, buf + 2, 2, CRC8_INIT_VALUE);
+	buf[4] = crc;
+
+	/* measurement needs to be stopped before sending commands */
+	ret = scd4x_send_command(state, CMD_STOP_MEAS);
+	if (ret)
+		return ret;
+
+	/* execution time */
+	msleep_interruptible(500);
+
+	ret = scd4x_i2c_xfer(state, buf, SCD4X_WRITE_BUF_SIZE, buf, 0);
+	if (ret)
+		return ret;
+
+	/* start measurement, except for forced calibration command */
+	if (cmd != CMD_FRC) {
+		ret = scd4x_send_command(state, CMD_START_MEAS);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int scd4x_write_and_fetch(struct scd4x_state *state, enum scd4x_cmd cmd,
+				uint16_t arg, void *response, int response_sz)
+{
+	struct i2c_client *client = state->client;
+	char buf[SCD4X_READ_BUF_SIZE];
+	char *rsp = response;
+	int i, ret;
+	char crc;
+
+	ret = scd4x_write(state, CMD_FRC, arg);
+	if (ret)
+		goto err;
+
+	/* execution time */
+	msleep_interruptible(400);
+
+	/* CRC byte for every 2 bytes of data */
+	response_sz += response_sz / 2;
+
+	ret = i2c_master_recv(client, buf, response_sz);
+	if (ret < 0)
+		goto err;
+	if (ret != response_sz) {
+		ret = -EIO;
+		goto err;
+	}
+
+	for (i = 0; i < response_sz; i += 3) {
+		crc = crc8(scd4x_crc8_table, buf + i, 2, CRC8_INIT_VALUE);
+		if (crc != buf[i + 2]) {
+			dev_err(&client->dev, "CRC error\n");
+			ret = -EIO;
+			goto err;
+		}
+
+		*rsp++ = buf[i];
+		*rsp++ = buf[i + 1];
+	}
+
+	return scd4x_send_command(state, CMD_START_MEAS);
+
+err:
+	/*
+	 * on error try to start the measurement,
+	 * puts sensor back into continuous measurement
+	 */
+	scd4x_send_command(state, CMD_START_MEAS);
+
+	return ret;
+}
+
+static int scd4x_read_meas(struct scd4x_state *state, uint16_t *meas)
+{
+	int i, ret;
+	__be16 buf[3];
+
+	ret = scd4x_read(state, CMD_READ_MEAS, buf, sizeof(buf));
+	if (ret)
+		return ret;
+
+	for (i = 0; i < ARRAY_SIZE(buf); i++)
+		meas[i] = be16_to_cpu(buf[i]);
+
+	return 0;
+}
+
+static int scd4x_wait_meas_poll(struct scd4x_state *state)
+{
+	struct i2c_client *client = state->client;
+	int tries = 6;
+	int ret;
+
+	do {
+		__be16 bval;
+		uint16_t val;
+
+		ret = scd4x_read(state, CMD_GET_DATA_READY, &bval, sizeof(bval));
+		if (ret)
+			return -EIO;
+		val = be16_to_cpu(bval);
+
+		/* new measurement available */
+		if (val & 0x7FF)
+			return 0;
+
+		msleep_interruptible(1000);
+	} while (--tries);
+
+	/* try to start sensor on timeout */
+	ret = scd4x_send_command(state, CMD_START_MEAS);
+	if (ret)
+		dev_err(&client->dev, "failed to start measurement: %d\n", ret);
+
+	return -ETIMEDOUT;
+}
+
+static int scd4x_read_poll(struct scd4x_state *state, uint16_t *buf)
+{
+	int ret;
+
+	ret = scd4x_wait_meas_poll(state);
+	if (ret)
+		return ret;
+
+	return scd4x_read_meas(state, buf);
+}
+
+static int scd4x_read_channel(struct scd4x_state *state, int chan)
+{
+	int ret;
+	uint16_t buf[3];
+
+	ret = scd4x_read_poll(state, buf);
+	if (ret)
+		return ret;
+
+	return buf[chan];
+}
+
+static int scd4x_read_raw(struct iio_dev *indio_dev,
+			struct iio_chan_spec const *chan, int *val,
+			int *val2, long mask)
+{
+	struct scd4x_state *state = iio_priv(indio_dev);
+	int ret;
+	__be16 tmp;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		mutex_lock(&state->lock);
+		ret = scd4x_read_channel(state, chan->address);
+		mutex_unlock(&state->lock);
+
+		iio_device_release_direct_mode(indio_dev);
+		if (ret < 0)
+			return ret;
+
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		if (chan->type == IIO_CONCENTRATION) {
+			*val = 0;
+			*val2 = 100;
+			return IIO_VAL_INT_PLUS_MICRO;
+		} else if (chan->type == IIO_TEMP) {
+			*val = 175000;
+			*val2 = 65536;
+			return IIO_VAL_FRACTIONAL;
+		} else if (chan->type == IIO_HUMIDITYRELATIVE) {
+			*val = 100000;
+			*val2 = 65536;
+			return IIO_VAL_FRACTIONAL;
+		}
+		return -EINVAL;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = -16852;
+		*val2 = 114286;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		mutex_lock(&state->lock);
+		ret = scd4x_read(state, CMD_GET_TEMP_OFFSET, &tmp, sizeof(tmp));
+		mutex_unlock(&state->lock);
+		if (ret)
+			return ret;
+
+		*val = be16_to_cpu(tmp);
+
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int scd4x_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+				int val, int val2, long mask)
+{
+	struct scd4x_state *state = iio_priv(indio_dev);
+	int ret = 0;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		mutex_lock(&state->lock);
+		ret = scd4x_write(state, CMD_SET_TEMP_OFFSET, val);
+		mutex_unlock(&state->lock);
+
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t calibration_auto_enable_show(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd4x_state *state = iio_priv(indio_dev);
+	int ret;
+	__be16 bval;
+	u16 val;
+
+	mutex_lock(&state->lock);
+	ret = scd4x_read(state, CMD_GET_ASC, &bval, sizeof(bval));
+	mutex_unlock(&state->lock);
+	if (ret) {
+		dev_err(dev, "failed to read automatic calibration");
+		return ret;
+	}
+
+	val = (be16_to_cpu(bval) & SCD4X_READY_MASK) ? 1 : 0;
+
+	return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t calibration_auto_enable_store(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd4x_state *state = iio_priv(indio_dev);
+	bool val;
+	int ret;
+	uint16_t value;
+
+	ret = kstrtobool(buf, &val);
+	if (ret)
+		return ret;
+
+	value = val;
+
+	mutex_lock(&state->lock);
+	ret = scd4x_write(state, CMD_SET_ASC, value);
+	mutex_unlock(&state->lock);
+	if (ret)
+		dev_err(dev, "failed to set automatic calibration");
+
+	return ret ?: len;
+}
+
+static ssize_t calibration_forced_value_store(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct scd4x_state *state = iio_priv(indio_dev);
+	uint16_t val, arg;
+	int ret;
+
+	ret = kstrtou16(buf, 0, &arg);
+	if (ret)
+		return ret;
+
+	if (arg < SCD4X_FRC_MIN_PPM || arg > SCD4X_FRC_MAX_PPM)
+		return -EINVAL;
+
+	mutex_lock(&state->lock);
+	ret = scd4x_write_and_fetch(state, CMD_FRC, arg, &val, sizeof(val));
+	mutex_unlock(&state->lock);
+
+	if (ret)
+		return ret;
+
+	if (val == 0xff) {
+		dev_err(dev, "forced calibration has failed");
+		return -EINVAL;
+	}
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR_RW(calibration_auto_enable, 0);
+static IIO_DEVICE_ATTR_WO(calibration_forced_value, 0);
+
+static IIO_CONST_ATTR(calibration_forced_value_available,
+	       __stringify([SCD4X_FRC_MIN_PPM 1 SCD4X_FRC_MAX_PPM]));
+
+static struct attribute *scd4x_attrs[] = {
+	&iio_dev_attr_calibration_auto_enable.dev_attr.attr,
+	&iio_dev_attr_calibration_forced_value.dev_attr.attr,
+	&iio_const_attr_calibration_forced_value_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group scd4x_attr_group = {
+	.attrs = scd4x_attrs,
+};
+
+static const struct iio_info scd4x_info = {
+	.attrs = &scd4x_attr_group,
+	.read_raw = scd4x_read_raw,
+	.write_raw = scd4x_write_raw,
+};
+
+static const struct iio_chan_spec scd4x_channels[] = {
+	{
+		.type = IIO_CONCENTRATION,
+		.channel2 = IIO_MOD_CO2,
+		.modified = 1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+					BIT(IIO_CHAN_INFO_SCALE),
+		.address = SCD4X_CO2,
+		.scan_index = SCD4X_CO2,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+	},
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+					BIT(IIO_CHAN_INFO_SCALE) |
+					BIT(IIO_CHAN_INFO_OFFSET) |
+					BIT(IIO_CHAN_INFO_CALIBBIAS),
+		.address = SCD4X_TEMP,
+		.scan_index = SCD4X_TEMP,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+	},
+	{
+		.type = IIO_HUMIDITYRELATIVE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+					BIT(IIO_CHAN_INFO_SCALE),
+		.address = SCD4X_HR,
+		.scan_index = SCD4X_HR,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+	},
+};
+
+static int scd4x_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct scd4x_state *state  = iio_priv(indio_dev);
+	int ret;
+
+	ret = scd4x_send_command(state, CMD_STOP_MEAS);
+	if (ret)
+		return ret;
+
+	return regulator_disable(state->vdd);
+}
+
+static int scd4x_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct scd4x_state *state = iio_priv(indio_dev);
+	int ret;
+
+	ret = regulator_enable(state->vdd);
+	if (ret)
+		return ret;
+
+	return scd4x_send_command(state, CMD_START_MEAS);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(scd4x_pm_ops, scd4x_suspend, scd4x_resume);
+
+static void scd4x_stop_meas(void *state)
+{
+	scd4x_send_command(state, CMD_STOP_MEAS);
+}
+
+static void scd4x_disable_regulator(void *data)
+{
+	struct scd4x_state *state = data;
+
+	regulator_disable(state->vdd);
+}
+
+static irqreturn_t scd4x_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct scd4x_state *state = iio_priv(indio_dev);
+	struct {
+		uint16_t data[3];
+		int64_t ts __aligned(8);
+	} scan;
+	int ret;
+
+	memset(&scan, 0, sizeof(scan));
+	mutex_lock(&state->lock);
+	ret = scd4x_read_poll(state, scan.data);
+	mutex_unlock(&state->lock);
+	if (ret)
+		goto out;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan, iio_get_time_ns(indio_dev));
+out:
+	iio_trigger_notify_done(indio_dev->trig);
+	return IRQ_HANDLED;
+}
+
+static int scd4x_probe(struct i2c_client *client, const struct i2c_device_id *id)
+{
+	static const unsigned long scd4x_scan_masks[] = { 0x07, 0x00 };
+	struct device *dev = &client->dev;
+	struct iio_dev *indio_dev;
+	struct scd4x_state *state;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*state));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	state = iio_priv(indio_dev);
+	mutex_init(&state->lock);
+	state->client = client;
+	crc8_populate_msb(scd4x_crc8_table, SCD4X_CRC8_POLYNOMIAL);
+
+	indio_dev->info = &scd4x_info;
+	indio_dev->name = client->name;
+	indio_dev->channels = scd4x_channels;
+	indio_dev->num_channels = ARRAY_SIZE(scd4x_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->available_scan_masks = scd4x_scan_masks;
+
+	state->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(state->vdd))
+		return dev_err_probe(dev, PTR_ERR(state->vdd), "failed to get regulator\n");
+
+	ret = regulator_enable(state->vdd);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, scd4x_disable_regulator, state);
+	if (ret)
+		return ret;
+
+	ret = scd4x_send_command(state, CMD_STOP_MEAS);
+	if (ret) {
+		dev_err(dev, "failed to stop measurement: %d\n", ret);
+		return ret;
+	}
+
+	/* execution time */
+	msleep_interruptible(500);
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, scd4x_trigger_handler, NULL);
+	if (ret)
+		return ret;
+
+	ret = scd4x_send_command(state, CMD_START_MEAS);
+	if (ret) {
+		dev_err(dev, "failed to start measurement: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(dev, scd4x_stop_meas, state);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id scd4x_dt_ids[] = {
+	{ .compatible = "sensirion,scd40" },
+	{ .compatible = "sensirion,scd41" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, scd4x_dt_ids);
+
+static struct i2c_driver scd4x_i2c_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = scd4x_dt_ids,
+		.pm = pm_sleep_ptr(&scd4x_pm_ops),
+	},
+	.probe = scd4x_probe,
+};
+module_i2c_driver(scd4x_i2c_driver);
+
+MODULE_AUTHOR("Roan van Dijk <roan@protonic.nl>");
+MODULE_DESCRIPTION("Sensirion SCD4X carbon dioxide sensor core driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/chemical/sgp30.c b/drivers/iio/chemical/sgp30.c
index 403e8803471a..e2c13c78c7e0 100644
--- a/drivers/iio/chemical/sgp30.c
+++ b/drivers/iio/chemical/sgp30.c
@@ -20,9 +20,9 @@
 #include <linux/delay.h>
 #include <linux/kthread.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/i2c.h>
-#include <linux/of_device.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
@@ -227,6 +227,7 @@ static int sgp_verify_buffer(const struct sgp_data *data,
  * @cmd:         SGP Command to issue
  * @buf:         Raw data buffer to use
  * @word_count:  Num words to read, excluding CRC bytes
+ * @duration_us: Time taken to sensor to take a reading and data to be ready.
  *
  * Return:       0 on success, negative error otherwise.
  */
@@ -409,6 +410,7 @@ static int sgp_read_raw(struct iio_dev *indio_dev,
 static int sgp_check_compat(struct sgp_data *data,
 			    unsigned int product_id)
 {
+	struct device *dev = &data->client->dev;
 	const struct sgp_version *supported_versions;
 	u16 ix, num_fs;
 	u16 product, generation, major, minor;
@@ -416,21 +418,20 @@ static int sgp_check_compat(struct sgp_data *data,
 	/* driver does not match product */
 	generation = SGP_VERS_GEN(data);
 	if (generation != 0) {
-		dev_err(&data->client->dev,
+		dev_err(dev,
 			"incompatible product generation %d != 0", generation);
 		return -ENODEV;
 	}
 
 	product = SGP_VERS_PRODUCT(data);
 	if (product != product_id) {
-		dev_err(&data->client->dev,
-			"sensor reports a different product: 0x%04hx\n",
+		dev_err(dev, "sensor reports a different product: 0x%04x\n",
 			product);
 		return -ENODEV;
 	}
 
 	if (SGP_VERS_RESERVED(data))
-		dev_warn(&data->client->dev, "reserved bit is set\n");
+		dev_warn(dev, "reserved bit is set\n");
 
 	/* engineering samples are not supported: no interface guarantees */
 	if (SGP_VERS_ENG_BIT(data))
@@ -456,8 +457,7 @@ static int sgp_check_compat(struct sgp_data *data,
 		    minor >= supported_versions[ix].minor)
 			return 0;
 	}
-	dev_err(&data->client->dev, "unsupported sgp version: %d.%d\n",
-		major, minor);
+	dev_err(dev, "unsupported sgp version: %d.%d\n", major, minor);
 
 	return -ENODEV;
 }
@@ -499,19 +499,18 @@ static const struct of_device_id sgp_dt_ids[] = {
 static int sgp_probe(struct i2c_client *client,
 		     const struct i2c_device_id *id)
 {
+	struct device *dev = &client->dev;
 	struct iio_dev *indio_dev;
 	struct sgp_data *data;
-	const struct of_device_id *of_id;
 	unsigned long product_id;
 	int ret;
 
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;
 
-	of_id = of_match_device(sgp_dt_ids, &client->dev);
-	if (of_id)
-		product_id = (unsigned long)of_id->data;
+	if (dev_fwnode(dev))
+		product_id = (unsigned long)device_get_match_data(dev);
 	else
 		product_id = id->driver_data;
 
@@ -533,7 +532,6 @@ static int sgp_probe(struct i2c_client *client,
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &sgp_info;
 	indio_dev->name = id->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -542,9 +540,9 @@ static int sgp_probe(struct i2c_client *client,
 
 	sgp_init(data);
 
-	ret = devm_iio_device_register(&client->dev, indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret) {
-		dev_err(&client->dev, "failed to register iio device\n");
+		dev_err(dev, "failed to register iio device\n");
 		return ret;
 	}
 
@@ -554,15 +552,13 @@ static int sgp_probe(struct i2c_client *client,
 	return 0;
 }
 
-static int sgp_remove(struct i2c_client *client)
+static void sgp_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct sgp_data *data = iio_priv(indio_dev);
 
 	if (data->iaq_thread)
 		kthread_stop(data->iaq_thread);
-
-	return 0;
 }
 
 static const struct i2c_device_id sgp_id[] = {
@@ -577,7 +573,7 @@ MODULE_DEVICE_TABLE(of, sgp_dt_ids);
 static struct i2c_driver sgp_driver = {
 	.driver = {
 		.name = "sgp30",
-		.of_match_table = of_match_ptr(sgp_dt_ids),
+		.of_match_table = sgp_dt_ids,
 	},
 	.probe = sgp_probe,
 	.remove = sgp_remove,
diff --git a/drivers/iio/chemical/sgp40.c b/drivers/iio/chemical/sgp40.c
new file mode 100644
index 000000000000..8a56394cea4e
--- /dev/null
+++ b/drivers/iio/chemical/sgp40.c
@@ -0,0 +1,378 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * sgp40.c - Support for Sensirion SGP40 Gas Sensor
+ *
+ * Copyright (C) 2021 Andreas Klinger <ak@it-klinger.de>
+ *
+ * I2C slave address: 0x59
+ *
+ * Datasheet can be found here:
+ * https://www.sensirion.com/file/datasheet_sgp40
+ *
+ * There are two functionalities supported:
+ *
+ * 1) read raw logarithmic resistance value from sensor
+ *    --> useful to pass it to the algorithm of the sensor vendor for
+ *    measuring deteriorations and improvements of air quality.
+ *
+ * 2) calculate an estimated absolute voc index (0 - 500 index points) for
+ *    measuring the air quality.
+ *    For this purpose the value of the resistance for which the voc index
+ *    will be 250 can be set up using calibbias.
+ *
+ * Compensation values of relative humidity and temperature can be set up
+ * by writing to the out values of temp and humidityrelative.
+ */
+
+#include <linux/delay.h>
+#include <linux/crc8.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/i2c.h>
+#include <linux/iio/iio.h>
+
+/*
+ * floating point calculation of voc is done as integer
+ * where numbers are multiplied by 1 << SGP40_CALC_POWER
+ */
+#define SGP40_CALC_POWER	14
+
+#define SGP40_CRC8_POLYNOMIAL	0x31
+#define SGP40_CRC8_INIT		0xff
+
+DECLARE_CRC8_TABLE(sgp40_crc8_table);
+
+struct sgp40_data {
+	struct device		*dev;
+	struct i2c_client	*client;
+	int			rht;
+	int			temp;
+	int			res_calibbias;
+	/* Prevent concurrent access to rht, tmp, calibbias */
+	struct mutex		lock;
+};
+
+struct sgp40_tg_measure {
+	u8	command[2];
+	__be16	rht_ticks;
+	u8	rht_crc;
+	__be16	temp_ticks;
+	u8	temp_crc;
+} __packed;
+
+struct sgp40_tg_result {
+	__be16	res_ticks;
+	u8	res_crc;
+} __packed;
+
+static const struct iio_chan_spec sgp40_channels[] = {
+	{
+		.type = IIO_CONCENTRATION,
+		.channel2 = IIO_MOD_VOC,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+	},
+	{
+		.type = IIO_RESISTANCE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_CALIBBIAS),
+	},
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.output = 1,
+	},
+	{
+		.type = IIO_HUMIDITYRELATIVE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.output = 1,
+	},
+};
+
+/*
+ * taylor approximation of e^x:
+ * y = 1 + x + x^2 / 2 + x^3 / 6 + x^4 / 24 + ... + x^n / n!
+ *
+ * Because we are calculating x real value multiplied by 2^power we get
+ * an additional 2^power^n to divide for every element. For a reasonable
+ * precision this would overflow after a few iterations. Therefore we
+ * divide the x^n part whenever its about to overflow (xmax).
+ */
+
+static u32 sgp40_exp(int exp, u32 power, u32 rounds)
+{
+        u32 x, y, xp;
+        u32 factorial, divider, xmax;
+        int sign = 1;
+	int i;
+
+        if (exp == 0)
+                return 1 << power;
+        else if (exp < 0) {
+                sign = -1;
+                exp *= -1;
+        }
+
+        xmax = 0x7FFFFFFF / exp;
+        x = exp;
+        xp = 1;
+        factorial = 1;
+        y = 1 << power;
+        divider = 0;
+
+        for (i = 1; i <= rounds; i++) {
+                xp *= x;
+                factorial *= i;
+                y += (xp >> divider) / factorial;
+                divider += power;
+                /* divide when next multiplication would overflow */
+                if (xp >= xmax) {
+                        xp >>= power;
+                        divider -= power;
+                }
+        }
+
+        if (sign == -1)
+                return (1 << (power * 2)) / y;
+        else
+                return y;
+}
+
+static int sgp40_calc_voc(struct sgp40_data *data, u16 resistance_raw, int *voc)
+{
+	int x;
+	u32 exp = 0;
+
+	/* we calculate as a multiple of 16384 (2^14) */
+	mutex_lock(&data->lock);
+	x = ((int)resistance_raw - data->res_calibbias) * 106;
+	mutex_unlock(&data->lock);
+
+	/* voc = 500 / (1 + e^x) */
+	exp = sgp40_exp(x, SGP40_CALC_POWER, 18);
+	*voc = 500 * ((1 << (SGP40_CALC_POWER * 2)) / ((1<<SGP40_CALC_POWER) + exp));
+
+	dev_dbg(data->dev, "raw: %d res_calibbias: %d x: %d exp: %d voc: %d\n",
+				resistance_raw, data->res_calibbias, x, exp, *voc);
+
+	return 0;
+}
+
+static int sgp40_measure_resistance_raw(struct sgp40_data *data, u16 *resistance_raw)
+{
+	int ret;
+	struct i2c_client *client = data->client;
+	u32 ticks;
+	u16 ticks16;
+	u8 crc;
+	struct sgp40_tg_measure tg = {.command = {0x26, 0x0F}};
+	struct sgp40_tg_result tgres;
+
+	mutex_lock(&data->lock);
+
+	ticks = (data->rht / 10) * 65535 / 10000;
+	ticks16 = (u16)clamp(ticks, 0u, 65535u); /* clamp between 0 .. 100 %rH */
+	tg.rht_ticks = cpu_to_be16(ticks16);
+	tg.rht_crc = crc8(sgp40_crc8_table, (u8 *)&tg.rht_ticks, 2, SGP40_CRC8_INIT);
+
+	ticks = ((data->temp + 45000) / 10 ) * 65535 / 17500;
+	ticks16 = (u16)clamp(ticks, 0u, 65535u); /* clamp between -45 .. +130 °C */
+	tg.temp_ticks = cpu_to_be16(ticks16);
+	tg.temp_crc = crc8(sgp40_crc8_table, (u8 *)&tg.temp_ticks, 2, SGP40_CRC8_INIT);
+
+	mutex_unlock(&data->lock);
+
+	ret = i2c_master_send(client, (const char *)&tg, sizeof(tg));
+	if (ret != sizeof(tg)) {
+		dev_warn(data->dev, "i2c_master_send ret: %d sizeof: %zu\n", ret, sizeof(tg));
+		return -EIO;
+	}
+	msleep(30);
+
+	ret = i2c_master_recv(client, (u8 *)&tgres, sizeof(tgres));
+	if (ret < 0)
+		return ret;
+	if (ret != sizeof(tgres)) {
+		dev_warn(data->dev, "i2c_master_recv ret: %d sizeof: %zu\n", ret, sizeof(tgres));
+		return -EIO;
+	}
+
+	crc = crc8(sgp40_crc8_table, (u8 *)&tgres.res_ticks, 2, SGP40_CRC8_INIT);
+	if (crc != tgres.res_crc) {
+		dev_err(data->dev, "CRC error while measure-raw\n");
+		return -EIO;
+	}
+
+	*resistance_raw = be16_to_cpu(tgres.res_ticks);
+
+	return 0;
+}
+
+static int sgp40_read_raw(struct iio_dev *indio_dev,
+			struct iio_chan_spec const *chan, int *val,
+			int *val2, long mask)
+{
+	struct sgp40_data *data = iio_priv(indio_dev);
+	int ret, voc;
+	u16 resistance_raw;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_RESISTANCE:
+			ret = sgp40_measure_resistance_raw(data, &resistance_raw);
+			if (ret)
+				return ret;
+
+			*val = resistance_raw;
+			return IIO_VAL_INT;
+		case IIO_TEMP:
+			mutex_lock(&data->lock);
+			*val = data->temp;
+			mutex_unlock(&data->lock);
+			return IIO_VAL_INT;
+		case IIO_HUMIDITYRELATIVE:
+			mutex_lock(&data->lock);
+			*val = data->rht;
+			mutex_unlock(&data->lock);
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_PROCESSED:
+		ret = sgp40_measure_resistance_raw(data, &resistance_raw);
+		if (ret)
+			return ret;
+
+		ret = sgp40_calc_voc(data, resistance_raw, &voc);
+		if (ret)
+			return ret;
+
+		*val = voc / (1 << SGP40_CALC_POWER);
+		/*
+		 * calculation should fit into integer, where:
+		 * voc <= (500 * 2^SGP40_CALC_POWER) = 8192000
+		 * (with SGP40_CALC_POWER = 14)
+		 */
+		*val2 = ((voc % (1 << SGP40_CALC_POWER)) * 244) / (1 << (SGP40_CALC_POWER - 12));
+		dev_dbg(data->dev, "voc: %d val: %d.%06d\n", voc, *val, *val2);
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		mutex_lock(&data->lock);
+		*val = data->res_calibbias;
+		mutex_unlock(&data->lock);
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sgp40_write_raw(struct iio_dev *indio_dev,
+			struct iio_chan_spec const *chan, int val,
+			int val2, long mask)
+{
+	struct sgp40_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_TEMP:
+			if ((val < -45000) || (val > 130000))
+				return -EINVAL;
+
+			mutex_lock(&data->lock);
+			data->temp = val;
+			mutex_unlock(&data->lock);
+			return 0;
+		case IIO_HUMIDITYRELATIVE:
+			if ((val < 0) || (val > 100000))
+				return -EINVAL;
+
+			mutex_lock(&data->lock);
+			data->rht = val;
+			mutex_unlock(&data->lock);
+			return 0;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_CALIBBIAS:
+		if ((val < 20000) || (val > 52768))
+			return -EINVAL;
+
+		mutex_lock(&data->lock);
+		data->res_calibbias = val;
+		mutex_unlock(&data->lock);
+		return 0;
+	}
+	return -EINVAL;
+}
+
+static const struct iio_info sgp40_info = {
+	.read_raw	= sgp40_read_raw,
+	.write_raw	= sgp40_write_raw,
+};
+
+static int sgp40_probe(struct i2c_client *client,
+		     const struct i2c_device_id *id)
+{
+	struct device *dev = &client->dev;
+	struct iio_dev *indio_dev;
+	struct sgp40_data *data;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->client = client;
+	data->dev = dev;
+
+	crc8_populate_msb(sgp40_crc8_table, SGP40_CRC8_POLYNOMIAL);
+
+	mutex_init(&data->lock);
+
+	/* set default values */
+	data->rht = 50000;		/* 50 % */
+	data->temp = 25000;		/* 25 °C */
+	data->res_calibbias = 30000;	/* resistance raw value for voc index of 250 */
+
+	indio_dev->info = &sgp40_info;
+	indio_dev->name = id->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = sgp40_channels;
+	indio_dev->num_channels = ARRAY_SIZE(sgp40_channels);
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		dev_err(dev, "failed to register iio device\n");
+
+	return ret;
+}
+
+static const struct i2c_device_id sgp40_id[] = {
+	{ "sgp40" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(i2c, sgp40_id);
+
+static const struct of_device_id sgp40_dt_ids[] = {
+	{ .compatible = "sensirion,sgp40" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, sgp40_dt_ids);
+
+static struct i2c_driver sgp40_driver = {
+	.driver = {
+		.name = "sgp40",
+		.of_match_table = sgp40_dt_ids,
+	},
+	.probe = sgp40_probe,
+	.id_table = sgp40_id,
+};
+module_i2c_driver(sgp40_driver);
+
+MODULE_AUTHOR("Andreas Klinger <ak@it-klinger.de>");
+MODULE_DESCRIPTION("Sensirion SGP40 gas sensor");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/chemical/sps30.c b/drivers/iio/chemical/sps30.c
index acb9f8ecbb3d..814ce0aad1cc 100644
--- a/drivers/iio/chemical/sps30.c
+++ b/drivers/iio/chemical/sps30.c
@@ -3,11 +3,8 @@
  * Sensirion SPS30 particulate matter sensor driver
  *
  * Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
- *
- * I2C slave address: 0x69
  */
 
-#include <asm/unaligned.h>
 #include <linux/crc8.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
@@ -19,27 +16,14 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 
-#define SPS30_CRC8_POLYNOMIAL 0x31
-/* max number of bytes needed to store PM measurements or serial string */
-#define SPS30_MAX_READ_SIZE 48
+#include "sps30.h"
+
 /* sensor measures reliably up to 3000 ug / m3 */
 #define SPS30_MAX_PM 3000
 /* minimum and maximum self cleaning periods in seconds */
 #define SPS30_AUTO_CLEANING_PERIOD_MIN 0
 #define SPS30_AUTO_CLEANING_PERIOD_MAX 604800
 
-/* SPS30 commands */
-#define SPS30_START_MEAS 0x0010
-#define SPS30_STOP_MEAS 0x0104
-#define SPS30_RESET 0xd304
-#define SPS30_READ_DATA_READY_FLAG 0x0202
-#define SPS30_READ_DATA 0x0300
-#define SPS30_READ_SERIAL 0xd033
-#define SPS30_START_FAN_CLEANING 0x5607
-#define SPS30_AUTO_CLEANING_PERIOD 0x8004
-/* not a sensor command per se, used only to distinguish write from read */
-#define SPS30_READ_AUTO_CLEANING_PERIOD 0x8005
-
 enum {
 	PM1,
 	PM2P5,
@@ -52,114 +36,9 @@ enum {
 	MEASURING,
 };
 
-struct sps30_state {
-	struct i2c_client *client;
-	/*
-	 * Guards against concurrent access to sensor registers.
-	 * Must be held whenever sequence of commands is to be executed.
-	 */
-	struct mutex lock;
-	int state;
-};
-
-DECLARE_CRC8_TABLE(sps30_crc8_table);
-
-static int sps30_write_then_read(struct sps30_state *state, u8 *txbuf,
-				 int txsize, u8 *rxbuf, int rxsize)
-{
-	int ret;
-
-	/*
-	 * Sensor does not support repeated start so instead of
-	 * sending two i2c messages in a row we just send one by one.
-	 */
-	ret = i2c_master_send(state->client, txbuf, txsize);
-	if (ret != txsize)
-		return ret < 0 ? ret : -EIO;
-
-	if (!rxbuf)
-		return 0;
-
-	ret = i2c_master_recv(state->client, rxbuf, rxsize);
-	if (ret != rxsize)
-		return ret < 0 ? ret : -EIO;
-
-	return 0;
-}
-
-static int sps30_do_cmd(struct sps30_state *state, u16 cmd, u8 *data, int size)
-{
-	/*
-	 * Internally sensor stores measurements in a following manner:
-	 *
-	 * PM1: upper two bytes, crc8, lower two bytes, crc8
-	 * PM2P5: upper two bytes, crc8, lower two bytes, crc8
-	 * PM4: upper two bytes, crc8, lower two bytes, crc8
-	 * PM10: upper two bytes, crc8, lower two bytes, crc8
-	 *
-	 * What follows next are number concentration measurements and
-	 * typical particle size measurement which we omit.
-	 */
-	u8 buf[SPS30_MAX_READ_SIZE] = { cmd >> 8, cmd };
-	int i, ret = 0;
-
-	switch (cmd) {
-	case SPS30_START_MEAS:
-		buf[2] = 0x03;
-		buf[3] = 0x00;
-		buf[4] = crc8(sps30_crc8_table, &buf[2], 2, CRC8_INIT_VALUE);
-		ret = sps30_write_then_read(state, buf, 5, NULL, 0);
-		break;
-	case SPS30_STOP_MEAS:
-	case SPS30_RESET:
-	case SPS30_START_FAN_CLEANING:
-		ret = sps30_write_then_read(state, buf, 2, NULL, 0);
-		break;
-	case SPS30_READ_AUTO_CLEANING_PERIOD:
-		buf[0] = SPS30_AUTO_CLEANING_PERIOD >> 8;
-		buf[1] = (u8)(SPS30_AUTO_CLEANING_PERIOD & 0xff);
-		/* fall through */
-	case SPS30_READ_DATA_READY_FLAG:
-	case SPS30_READ_DATA:
-	case SPS30_READ_SERIAL:
-		/* every two data bytes are checksummed */
-		size += size / 2;
-		ret = sps30_write_then_read(state, buf, 2, buf, size);
-		break;
-	case SPS30_AUTO_CLEANING_PERIOD:
-		buf[2] = data[0];
-		buf[3] = data[1];
-		buf[4] = crc8(sps30_crc8_table, &buf[2], 2, CRC8_INIT_VALUE);
-		buf[5] = data[2];
-		buf[6] = data[3];
-		buf[7] = crc8(sps30_crc8_table, &buf[5], 2, CRC8_INIT_VALUE);
-		ret = sps30_write_then_read(state, buf, 8, NULL, 0);
-		break;
-	}
-
-	if (ret)
-		return ret;
-
-	/* validate received data and strip off crc bytes */
-	for (i = 0; i < size; i += 3) {
-		u8 crc = crc8(sps30_crc8_table, &buf[i], 2, CRC8_INIT_VALUE);
-
-		if (crc != buf[i + 2]) {
-			dev_err(&state->client->dev,
-				"data integrity check failed\n");
-			return -EIO;
-		}
-
-		*data++ = buf[i];
-		*data++ = buf[i + 1];
-	}
-
-	return 0;
-}
-
-static s32 sps30_float_to_int_clamped(const u8 *fp)
+static s32 sps30_float_to_int_clamped(__be32 *fp)
 {
-	int val = get_unaligned_be32(fp);
+	int val = be32_to_cpup(fp);
 	int mantissa = val & GENMASK(22, 0);
 	/* this is fine since passed float is always non-negative */
 	int exp = val >> 23;
@@ -188,38 +67,35 @@ static s32 sps30_float_to_int_clamped(const u8 *fp)
 
 static int sps30_do_meas(struct sps30_state *state, s32 *data, int size)
 {
-	int i, ret, tries = 5;
-	u8 tmp[16];
+	int i, ret;
 
 	if (state->state == RESET) {
-		ret = sps30_do_cmd(state, SPS30_START_MEAS, NULL, 0);
+		ret = state->ops->start_meas(state);
 		if (ret)
 			return ret;
 
 		state->state = MEASURING;
 	}
 
-	while (tries--) {
-		ret = sps30_do_cmd(state, SPS30_READ_DATA_READY_FLAG, tmp, 2);
-		if (ret)
-			return -EIO;
+	ret = state->ops->read_meas(state, (__be32 *)data, size);
+	if (ret)
+		return ret;
 
-		/* new measurements ready to be read */
-		if (tmp[1] == 1)
-			break;
+	for (i = 0; i < size; i++)
+		data[i] = sps30_float_to_int_clamped((__be32 *)&data[i]);
 
-		msleep_interruptible(300);
-	}
+	return 0;
+}
 
-	if (tries == -1)
-		return -ETIMEDOUT;
+static int sps30_do_reset(struct sps30_state *state)
+{
+	int ret;
 
-	ret = sps30_do_cmd(state, SPS30_READ_DATA, tmp, sizeof(int) * size);
+	ret = state->ops->reset(state);
 	if (ret)
 		return ret;
 
-	for (i = 0; i < size; i++)
-		data[i] = sps30_float_to_int_clamped(&tmp[4 * i]);
+	state->state = RESET;
 
 	return 0;
 }
@@ -230,15 +106,18 @@ static irqreturn_t sps30_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct sps30_state *state = iio_priv(indio_dev);
 	int ret;
-	s32 data[4 + 2]; /* PM1, PM2P5, PM4, PM10, timestamp */
+	struct {
+		s32 data[4]; /* PM1, PM2P5, PM4, PM10 */
+		s64 ts;
+	} scan;
 
 	mutex_lock(&state->lock);
-	ret = sps30_do_meas(state, data, 4);
+	ret = sps30_do_meas(state, scan.data, ARRAY_SIZE(scan.data));
 	mutex_unlock(&state->lock);
 	if (ret)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data,
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan,
 					   iio_get_time_ns(indio_dev));
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -307,24 +186,6 @@ static int sps30_read_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
-static int sps30_do_cmd_reset(struct sps30_state *state)
-{
-	int ret;
-
-	ret = sps30_do_cmd(state, SPS30_RESET, NULL, 0);
-	msleep(300);
-	/*
-	 * Power-on-reset causes sensor to produce some glitch on i2c bus and
-	 * some controllers end up in error state. Recover simply by placing
-	 * some data on the bus, for example STOP_MEAS command, which
-	 * is NOP in this case.
-	 */
-	sps30_do_cmd(state, SPS30_STOP_MEAS, NULL, 0);
-	state->state = RESET;
-
-	return ret;
-}
-
 static ssize_t start_cleaning_store(struct device *dev,
 				    struct device_attribute *attr,
 				    const char *buf, size_t len)
@@ -337,7 +198,7 @@ static ssize_t start_cleaning_store(struct device *dev,
 		return -EINVAL;
 
 	mutex_lock(&state->lock);
-	ret = sps30_do_cmd(state, SPS30_START_FAN_CLEANING, NULL, 0);
+	ret = state->ops->clean_fan(state);
 	mutex_unlock(&state->lock);
 	if (ret)
 		return ret;
@@ -346,31 +207,29 @@ static ssize_t start_cleaning_store(struct device *dev,
 }
 
 static ssize_t cleaning_period_show(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
+				    struct device_attribute *attr,
+				    char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct sps30_state *state = iio_priv(indio_dev);
-	u8 tmp[4];
+	__be32 val;
 	int ret;
 
 	mutex_lock(&state->lock);
-	ret = sps30_do_cmd(state, SPS30_READ_AUTO_CLEANING_PERIOD, tmp, 4);
+	ret = state->ops->read_cleaning_period(state, &val);
 	mutex_unlock(&state->lock);
 	if (ret)
 		return ret;
 
-	return sprintf(buf, "%d\n", get_unaligned_be32(tmp));
+	return sysfs_emit(buf, "%d\n", be32_to_cpu(val));
 }
 
-static ssize_t cleaning_period_store(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf, size_t len)
+static ssize_t cleaning_period_store(struct device *dev, struct device_attribute *attr,
+				     const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct sps30_state *state = iio_priv(indio_dev);
 	int val, ret;
-	u8 tmp[4];
 
 	if (kstrtoint(buf, 0, &val))
 		return -EINVAL;
@@ -379,10 +238,8 @@ static ssize_t cleaning_period_store(struct device *dev,
 	    (val > SPS30_AUTO_CLEANING_PERIOD_MAX))
 		return -EINVAL;
 
-	put_unaligned_be32(val, tmp);
-
 	mutex_lock(&state->lock);
-	ret = sps30_do_cmd(state, SPS30_AUTO_CLEANING_PERIOD, tmp, 0);
+	ret = state->ops->write_cleaning_period(state, cpu_to_be32(val));
 	if (ret) {
 		mutex_unlock(&state->lock);
 		return ret;
@@ -394,7 +251,7 @@ static ssize_t cleaning_period_store(struct device *dev,
 	 * sensor requires reset in order to return up to date self cleaning
 	 * period
 	 */
-	ret = sps30_do_cmd_reset(state);
+	ret = sps30_do_reset(state);
 	if (ret)
 		dev_warn(dev,
 			 "period changed but reads will return the old value\n");
@@ -408,9 +265,9 @@ static ssize_t cleaning_period_available_show(struct device *dev,
 					      struct device_attribute *attr,
 					      char *buf)
 {
-	return snprintf(buf, PAGE_SIZE, "[%d %d %d]\n",
-			SPS30_AUTO_CLEANING_PERIOD_MIN, 1,
-			SPS30_AUTO_CLEANING_PERIOD_MAX);
+	return sysfs_emit(buf, "[%d %d %d]\n",
+			  SPS30_AUTO_CLEANING_PERIOD_MIN, 1,
+			  SPS30_AUTO_CLEANING_PERIOD_MAX);
 }
 
 static IIO_DEVICE_ATTR_WO(start_cleaning, 0);
@@ -457,91 +314,65 @@ static const struct iio_chan_spec sps30_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(4),
 };
 
-static void sps30_stop_meas(void *data)
+static void sps30_devm_stop_meas(void *data)
 {
 	struct sps30_state *state = data;
 
-	sps30_do_cmd(state, SPS30_STOP_MEAS, NULL, 0);
+	if (state->state == MEASURING)
+		state->ops->stop_meas(state);
 }
 
 static const unsigned long sps30_scan_masks[] = { 0x0f, 0x00 };
 
-static int sps30_probe(struct i2c_client *client)
+int sps30_probe(struct device *dev, const char *name, void *priv, const struct sps30_ops *ops)
 {
 	struct iio_dev *indio_dev;
 	struct sps30_state *state;
-	u8 buf[32];
 	int ret;
 
-	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
-		return -EOPNOTSUPP;
-
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*state));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*state));
 	if (!indio_dev)
 		return -ENOMEM;
 
+	dev_set_drvdata(dev, indio_dev);
+
 	state = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
-	state->client = client;
-	state->state = RESET;
-	indio_dev->dev.parent = &client->dev;
+	state->dev = dev;
+	state->priv = priv;
+	state->ops = ops;
+	mutex_init(&state->lock);
+
 	indio_dev->info = &sps30_info;
-	indio_dev->name = client->name;
+	indio_dev->name = name;
 	indio_dev->channels = sps30_channels;
 	indio_dev->num_channels = ARRAY_SIZE(sps30_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->available_scan_masks = sps30_scan_masks;
 
-	mutex_init(&state->lock);
-	crc8_populate_msb(sps30_crc8_table, SPS30_CRC8_POLYNOMIAL);
-
-	ret = sps30_do_cmd_reset(state);
+	ret = sps30_do_reset(state);
 	if (ret) {
-		dev_err(&client->dev, "failed to reset device\n");
+		dev_err(dev, "failed to reset device\n");
 		return ret;
 	}
 
-	ret = sps30_do_cmd(state, SPS30_READ_SERIAL, buf, sizeof(buf));
+	ret = state->ops->show_info(state);
 	if (ret) {
-		dev_err(&client->dev, "failed to read serial number\n");
+		dev_err(dev, "failed to read device info\n");
 		return ret;
 	}
-	/* returned serial number is already NUL terminated */
-	dev_info(&client->dev, "serial number: %s\n", buf);
 
-	ret = devm_add_action_or_reset(&client->dev, sps30_stop_meas, state);
+	ret = devm_add_action_or_reset(dev, sps30_devm_stop_meas, state);
 	if (ret)
 		return ret;
 
-	ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL,
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
 					      sps30_trigger_handler, NULL);
 	if (ret)
 		return ret;
 
-	return devm_iio_device_register(&client->dev, indio_dev);
+	return devm_iio_device_register(dev, indio_dev);
 }
-
-static const struct i2c_device_id sps30_id[] = {
-	{ "sps30" },
-	{ }
-};
-MODULE_DEVICE_TABLE(i2c, sps30_id);
-
-static const struct of_device_id sps30_of_match[] = {
-	{ .compatible = "sensirion,sps30" },
-	{ }
-};
-MODULE_DEVICE_TABLE(of, sps30_of_match);
-
-static struct i2c_driver sps30_driver = {
-	.driver = {
-		.name = "sps30",
-		.of_match_table = sps30_of_match,
-	},
-	.id_table = sps30_id,
-	.probe_new = sps30_probe,
-};
-module_i2c_driver(sps30_driver);
+EXPORT_SYMBOL_NS_GPL(sps30_probe, IIO_SPS30);
 
 MODULE_AUTHOR("Tomasz Duszynski <tduszyns@gmail.com>");
 MODULE_DESCRIPTION("Sensirion SPS30 particulate matter sensor driver");
diff --git a/drivers/iio/chemical/sps30.h b/drivers/iio/chemical/sps30.h
new file mode 100644
index 000000000000..a58ee43cf45d
--- /dev/null
+++ b/drivers/iio/chemical/sps30.h
@@ -0,0 +1,35 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _SPS30_H
+#define _SPS30_H
+
+#include <linux/types.h>
+
+struct sps30_state;
+struct sps30_ops {
+	int (*start_meas)(struct sps30_state *state);
+	int (*stop_meas)(struct sps30_state *state);
+	int (*read_meas)(struct sps30_state *state, __be32 *meas, size_t num);
+	int (*reset)(struct sps30_state *state);
+	int (*clean_fan)(struct sps30_state *state);
+	int (*read_cleaning_period)(struct sps30_state *state, __be32 *period);
+	int (*write_cleaning_period)(struct sps30_state *state, __be32 period);
+	int (*show_info)(struct sps30_state *state);
+};
+
+struct sps30_state {
+	/* serialize access to the device */
+	struct mutex lock;
+	struct device *dev;
+	int state;
+	/*
+	 * priv pointer is solely for serdev driver private data. We keep it
+	 * here because driver_data inside dev has been already used for iio and
+	 * struct serdev_device doesn't have one.
+	 */
+	void *priv;
+	const struct sps30_ops *ops;
+};
+
+int sps30_probe(struct device *dev, const char *name, void *priv, const struct sps30_ops *ops);
+
+#endif
diff --git a/drivers/iio/chemical/sps30_i2c.c b/drivers/iio/chemical/sps30_i2c.c
new file mode 100644
index 000000000000..2aed483a2fde
--- /dev/null
+++ b/drivers/iio/chemical/sps30_i2c.c
@@ -0,0 +1,259 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sensirion SPS30 particulate matter sensor i2c driver
+ *
+ * Copyright (c) 2020 Tomasz Duszynski <tomasz.duszynski@octakon.com>
+ *
+ * I2C slave address: 0x69
+ */
+#include <asm/unaligned.h>
+#include <linux/crc8.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/types.h>
+
+#include "sps30.h"
+
+#define SPS30_I2C_CRC8_POLYNOMIAL 0x31
+/* max number of bytes needed to store PM measurements or serial string */
+#define SPS30_I2C_MAX_BUF_SIZE 48
+
+DECLARE_CRC8_TABLE(sps30_i2c_crc8_table);
+
+#define SPS30_I2C_START_MEAS 0x0010
+#define SPS30_I2C_STOP_MEAS 0x0104
+#define SPS30_I2C_READ_MEAS 0x0300
+#define SPS30_I2C_MEAS_READY 0x0202
+#define SPS30_I2C_RESET 0xd304
+#define SPS30_I2C_CLEAN_FAN 0x5607
+#define SPS30_I2C_PERIOD 0x8004
+#define SPS30_I2C_READ_SERIAL 0xd033
+#define SPS30_I2C_READ_VERSION 0xd100
+
+static int sps30_i2c_xfer(struct sps30_state *state, unsigned char *txbuf, size_t txsize,
+			  unsigned char *rxbuf, size_t rxsize)
+{
+	struct i2c_client *client = to_i2c_client(state->dev);
+	int ret;
+
+	/*
+	 * Sensor does not support repeated start so instead of
+	 * sending two i2c messages in a row we just send one by one.
+	 */
+	ret = i2c_master_send(client, txbuf, txsize);
+	if (ret < 0)
+		return ret;
+	if (ret != txsize)
+		return -EIO;
+
+	if (!rxsize)
+		return 0;
+
+	ret = i2c_master_recv(client, rxbuf, rxsize);
+	if (ret < 0)
+		return ret;
+	if (ret != rxsize)
+		return -EIO;
+
+	return 0;
+}
+
+static int sps30_i2c_command(struct sps30_state *state, u16 cmd, void *arg, size_t arg_size,
+			     void *rsp, size_t rsp_size)
+{
+	/*
+	 * Internally sensor stores measurements in a following manner:
+	 *
+	 * PM1: upper two bytes, crc8, lower two bytes, crc8
+	 * PM2P5: upper two bytes, crc8, lower two bytes, crc8
+	 * PM4: upper two bytes, crc8, lower two bytes, crc8
+	 * PM10: upper two bytes, crc8, lower two bytes, crc8
+	 *
+	 * What follows next are number concentration measurements and
+	 * typical particle size measurement which we omit.
+	 */
+	unsigned char buf[SPS30_I2C_MAX_BUF_SIZE];
+	unsigned char *tmp;
+	unsigned char crc;
+	size_t i;
+	int ret;
+
+	put_unaligned_be16(cmd, buf);
+	i = 2;
+
+	if (rsp) {
+		/* each two bytes are followed by a crc8 */
+		rsp_size += rsp_size / 2;
+	} else {
+		tmp = arg;
+
+		while (arg_size) {
+			buf[i] = *tmp++;
+			buf[i + 1] = *tmp++;
+			buf[i + 2] = crc8(sps30_i2c_crc8_table, buf + i, 2, CRC8_INIT_VALUE);
+			arg_size -= 2;
+			i += 3;
+		}
+	}
+
+	ret = sps30_i2c_xfer(state, buf, i, buf, rsp_size);
+	if (ret)
+		return ret;
+
+	/* validate received data and strip off crc bytes */
+	tmp = rsp;
+	for (i = 0; i < rsp_size; i += 3) {
+		crc = crc8(sps30_i2c_crc8_table, buf + i, 2, CRC8_INIT_VALUE);
+		if (crc != buf[i + 2]) {
+			dev_err(state->dev, "data integrity check failed\n");
+			return -EIO;
+		}
+
+		*tmp++ = buf[i];
+		*tmp++ = buf[i + 1];
+	}
+
+	return 0;
+}
+
+static int sps30_i2c_start_meas(struct sps30_state *state)
+{
+	/* request BE IEEE754 formatted data */
+	unsigned char buf[] = { 0x03, 0x00 };
+
+	return sps30_i2c_command(state, SPS30_I2C_START_MEAS, buf, sizeof(buf), NULL, 0);
+}
+
+static int sps30_i2c_stop_meas(struct sps30_state *state)
+{
+	return sps30_i2c_command(state, SPS30_I2C_STOP_MEAS, NULL, 0, NULL, 0);
+}
+
+static int sps30_i2c_reset(struct sps30_state *state)
+{
+	int ret;
+
+	ret = sps30_i2c_command(state, SPS30_I2C_RESET, NULL, 0, NULL, 0);
+	msleep(500);
+	/*
+	 * Power-on-reset causes sensor to produce some glitch on i2c bus and
+	 * some controllers end up in error state. Recover simply by placing
+	 * some data on the bus, for example STOP_MEAS command, which
+	 * is NOP in this case.
+	 */
+	sps30_i2c_stop_meas(state);
+
+	return ret;
+}
+
+static bool sps30_i2c_meas_ready(struct sps30_state *state)
+{
+	unsigned char buf[2];
+	int ret;
+
+	ret = sps30_i2c_command(state, SPS30_I2C_MEAS_READY, NULL, 0, buf, sizeof(buf));
+	if (ret)
+		return false;
+
+	return buf[1];
+}
+
+static int sps30_i2c_read_meas(struct sps30_state *state, __be32 *meas, size_t num)
+{
+	/* measurements are ready within a second */
+	if (msleep_interruptible(1000))
+		return -EINTR;
+
+	if (!sps30_i2c_meas_ready(state))
+		return -ETIMEDOUT;
+
+	return sps30_i2c_command(state, SPS30_I2C_READ_MEAS, NULL, 0, meas, sizeof(num) * num);
+}
+
+static int sps30_i2c_clean_fan(struct sps30_state *state)
+{
+	return sps30_i2c_command(state, SPS30_I2C_CLEAN_FAN, NULL, 0, NULL, 0);
+}
+
+static int sps30_i2c_read_cleaning_period(struct sps30_state *state, __be32 *period)
+{
+	return sps30_i2c_command(state, SPS30_I2C_PERIOD, NULL, 0, period, sizeof(*period));
+}
+
+static int sps30_i2c_write_cleaning_period(struct sps30_state *state, __be32 period)
+{
+	return sps30_i2c_command(state, SPS30_I2C_PERIOD, &period, sizeof(period), NULL, 0);
+}
+
+static int sps30_i2c_show_info(struct sps30_state *state)
+{
+	/* extra nul just in case */
+	unsigned char buf[32 + 1] = { 0x00 };
+	int ret;
+
+	ret = sps30_i2c_command(state, SPS30_I2C_READ_SERIAL, NULL, 0, buf, sizeof(buf) - 1);
+	if (ret)
+		return ret;
+
+	dev_info(state->dev, "serial number: %s\n", buf);
+
+	ret = sps30_i2c_command(state, SPS30_I2C_READ_VERSION, NULL, 0, buf, 2);
+	if (ret)
+		return ret;
+
+	dev_info(state->dev, "fw version: %u.%u\n", buf[0], buf[1]);
+
+	return 0;
+}
+
+static const struct sps30_ops sps30_i2c_ops = {
+	.start_meas = sps30_i2c_start_meas,
+	.stop_meas = sps30_i2c_stop_meas,
+	.read_meas = sps30_i2c_read_meas,
+	.reset = sps30_i2c_reset,
+	.clean_fan = sps30_i2c_clean_fan,
+	.read_cleaning_period = sps30_i2c_read_cleaning_period,
+	.write_cleaning_period = sps30_i2c_write_cleaning_period,
+	.show_info = sps30_i2c_show_info,
+};
+
+static int sps30_i2c_probe(struct i2c_client *client)
+{
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C))
+		return -EOPNOTSUPP;
+
+	crc8_populate_msb(sps30_i2c_crc8_table, SPS30_I2C_CRC8_POLYNOMIAL);
+
+	return sps30_probe(&client->dev, client->name, NULL, &sps30_i2c_ops);
+}
+
+static const struct i2c_device_id sps30_i2c_id[] = {
+	{ "sps30" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, sps30_i2c_id);
+
+static const struct of_device_id sps30_i2c_of_match[] = {
+	{ .compatible = "sensirion,sps30" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sps30_i2c_of_match);
+
+static struct i2c_driver sps30_i2c_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = sps30_i2c_of_match,
+	},
+	.id_table = sps30_i2c_id,
+	.probe_new = sps30_i2c_probe,
+};
+module_i2c_driver(sps30_i2c_driver);
+
+MODULE_AUTHOR("Tomasz Duszynski <tomasz.duszynski@octakon.com>");
+MODULE_DESCRIPTION("Sensirion SPS30 particulate matter sensor i2c driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_SPS30);
diff --git a/drivers/iio/chemical/sps30_serial.c b/drivers/iio/chemical/sps30_serial.c
new file mode 100644
index 000000000000..164f4b3e025c
--- /dev/null
+++ b/drivers/iio/chemical/sps30_serial.c
@@ -0,0 +1,432 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Sensirion SPS30 particulate matter sensor serial driver
+ *
+ * Copyright (c) 2021 Tomasz Duszynski <tomasz.duszynski@octakon.com>
+ */
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/iio/iio.h>
+#include <linux/minmax.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/serdev.h>
+#include <linux/types.h>
+
+#include "sps30.h"
+
+#define SPS30_SERIAL_DEV_NAME "sps30"
+
+#define SPS30_SERIAL_SOF_EOF 0x7e
+#define SPS30_SERIAL_TIMEOUT msecs_to_jiffies(20)
+#define SPS30_SERIAL_MAX_BUF_SIZE 263
+#define SPS30_SERIAL_ESCAPE_CHAR 0x7d
+
+#define SPS30_SERIAL_FRAME_MIN_SIZE 7
+#define SPS30_SERIAL_FRAME_ADR_OFFSET 1
+#define SPS30_SERIAL_FRAME_CMD_OFFSET 2
+#define SPS30_SERIAL_FRAME_MOSI_LEN_OFFSET 3
+#define SPS30_SERIAL_FRAME_MISO_STATE_OFFSET 3
+#define SPS30_SERIAL_FRAME_MISO_LEN_OFFSET 4
+#define SPS30_SERIAL_FRAME_MISO_DATA_OFFSET 5
+
+#define SPS30_SERIAL_START_MEAS 0x00
+#define SPS30_SERIAL_STOP_MEAS 0x01
+#define SPS30_SERIAL_READ_MEAS 0x03
+#define SPS30_SERIAL_RESET 0xd3
+#define SPS30_SERIAL_CLEAN_FAN 0x56
+#define SPS30_SERIAL_PERIOD 0x80
+#define SPS30_SERIAL_DEV_INFO 0xd0
+#define SPS30_SERIAL_READ_VERSION 0xd1
+
+struct sps30_serial_priv {
+	struct completion new_frame;
+	unsigned char buf[SPS30_SERIAL_MAX_BUF_SIZE];
+	size_t num;
+	bool escaped;
+	bool done;
+};
+
+static int sps30_serial_xfer(struct sps30_state *state, const unsigned char *buf, size_t size)
+{
+	struct serdev_device *serdev = to_serdev_device(state->dev);
+	struct sps30_serial_priv *priv = state->priv;
+	int ret;
+
+	priv->num = 0;
+	priv->escaped = false;
+	priv->done = false;
+
+	ret = serdev_device_write(serdev, buf, size, SPS30_SERIAL_TIMEOUT);
+	if (ret < 0)
+		return ret;
+	if (ret != size)
+		return -EIO;
+
+	ret = wait_for_completion_interruptible_timeout(&priv->new_frame, SPS30_SERIAL_TIMEOUT);
+	if (ret < 0)
+		return ret;
+	if (!ret)
+		return -ETIMEDOUT;
+
+	return 0;
+}
+
+static const struct {
+	unsigned char byte;
+	unsigned char byte2;
+} sps30_serial_bytes[] = {
+	{ 0x11, 0x31 },
+	{ 0x13, 0x33 },
+	{ 0x7e, 0x5e },
+	{ 0x7d, 0x5d },
+};
+
+static int sps30_serial_put_byte(unsigned char *buf, unsigned char byte)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(sps30_serial_bytes); i++) {
+		if (sps30_serial_bytes[i].byte != byte)
+			continue;
+
+		buf[0] = SPS30_SERIAL_ESCAPE_CHAR;
+		buf[1] = sps30_serial_bytes[i].byte2;
+
+		return 2;
+	}
+
+	buf[0] = byte;
+
+	return 1;
+}
+
+static char sps30_serial_get_byte(bool escaped, unsigned char byte2)
+{
+	int i;
+
+	if (!escaped)
+		return byte2;
+
+	for (i = 0; i < ARRAY_SIZE(sps30_serial_bytes); i++) {
+		if (sps30_serial_bytes[i].byte2 != byte2)
+			continue;
+
+		return sps30_serial_bytes[i].byte;
+	}
+
+	return 0;
+}
+
+static unsigned char sps30_serial_calc_chksum(const unsigned char *buf, size_t num)
+{
+	unsigned int chksum = 0;
+	size_t i;
+
+	for (i = 0; i < num; i++)
+		chksum += buf[i];
+
+	return ~chksum;
+}
+
+static int sps30_serial_prep_frame(unsigned char *buf, unsigned char cmd,
+				   const unsigned char *arg, size_t arg_size)
+{
+	unsigned char chksum;
+	int num = 0;
+	size_t i;
+
+	buf[num++] = SPS30_SERIAL_SOF_EOF;
+	buf[num++] = 0;
+	num += sps30_serial_put_byte(buf + num, cmd);
+	num += sps30_serial_put_byte(buf + num, arg_size);
+
+	for (i = 0; i < arg_size; i++)
+		num += sps30_serial_put_byte(buf + num, arg[i]);
+
+	/* SOF isn't checksummed */
+	chksum = sps30_serial_calc_chksum(buf + 1, num - 1);
+	num += sps30_serial_put_byte(buf + num, chksum);
+	buf[num++] = SPS30_SERIAL_SOF_EOF;
+
+	return num;
+}
+
+static bool sps30_serial_frame_valid(struct sps30_state *state, const unsigned char *buf)
+{
+	struct sps30_serial_priv *priv = state->priv;
+	unsigned char chksum;
+
+	if ((priv->num < SPS30_SERIAL_FRAME_MIN_SIZE) ||
+	    (priv->num != SPS30_SERIAL_FRAME_MIN_SIZE +
+	     priv->buf[SPS30_SERIAL_FRAME_MISO_LEN_OFFSET])) {
+		dev_err(state->dev, "frame has invalid number of bytes\n");
+		return false;
+	}
+
+	if ((priv->buf[SPS30_SERIAL_FRAME_ADR_OFFSET] != buf[SPS30_SERIAL_FRAME_ADR_OFFSET]) ||
+	    (priv->buf[SPS30_SERIAL_FRAME_CMD_OFFSET] != buf[SPS30_SERIAL_FRAME_CMD_OFFSET])) {
+		dev_err(state->dev, "frame has wrong ADR and CMD bytes\n");
+		return false;
+	}
+
+	if (priv->buf[SPS30_SERIAL_FRAME_MISO_STATE_OFFSET]) {
+		dev_err(state->dev, "frame with non-zero state received (0x%02x)\n",
+			priv->buf[SPS30_SERIAL_FRAME_MISO_STATE_OFFSET]);
+		return false;
+	}
+
+	/* SOF, checksum and EOF are not checksummed */
+	chksum = sps30_serial_calc_chksum(priv->buf + 1, priv->num - 3);
+	if (priv->buf[priv->num - 2] != chksum) {
+		dev_err(state->dev, "frame integrity check failed\n");
+		return false;
+	}
+
+	return true;
+}
+
+static int sps30_serial_command(struct sps30_state *state, unsigned char cmd,
+				const void *arg, size_t arg_size, void *rsp, size_t rsp_size)
+{
+	struct sps30_serial_priv *priv = state->priv;
+	unsigned char buf[SPS30_SERIAL_MAX_BUF_SIZE];
+	int ret, size;
+
+	size = sps30_serial_prep_frame(buf, cmd, arg, arg_size);
+	ret = sps30_serial_xfer(state, buf, size);
+	if (ret)
+		return ret;
+
+	if (!sps30_serial_frame_valid(state, buf))
+		return -EIO;
+
+	if (rsp) {
+		rsp_size = min_t(size_t, priv->buf[SPS30_SERIAL_FRAME_MISO_LEN_OFFSET], rsp_size);
+		memcpy(rsp, &priv->buf[SPS30_SERIAL_FRAME_MISO_DATA_OFFSET], rsp_size);
+	}
+
+	return rsp_size;
+}
+
+static int sps30_serial_receive_buf(struct serdev_device *serdev,
+				    const unsigned char *buf, size_t size)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(&serdev->dev);
+	struct sps30_serial_priv *priv;
+	struct sps30_state *state;
+	unsigned char byte;
+	size_t i;
+
+	if (!indio_dev)
+		return 0;
+
+	state = iio_priv(indio_dev);
+	priv = state->priv;
+
+	/* just in case device put some unexpected data on the bus */
+	if (priv->done)
+		return size;
+
+	/* wait for the start of frame */
+	if (!priv->num && size && buf[0] != SPS30_SERIAL_SOF_EOF)
+		return 1;
+
+	if (priv->num + size >= ARRAY_SIZE(priv->buf))
+		size = ARRAY_SIZE(priv->buf) - priv->num;
+
+	for (i = 0; i < size; i++) {
+		byte = buf[i];
+		/* remove stuffed bytes on-the-fly */
+		if (byte == SPS30_SERIAL_ESCAPE_CHAR) {
+			priv->escaped = true;
+			continue;
+		}
+
+		byte = sps30_serial_get_byte(priv->escaped, byte);
+		if (priv->escaped && !byte)
+			dev_warn(state->dev, "unrecognized escaped char (0x%02x)\n", byte);
+
+		priv->buf[priv->num++] = byte;
+
+		/* EOF received */
+		if (!priv->escaped && byte == SPS30_SERIAL_SOF_EOF) {
+			if (priv->num < SPS30_SERIAL_FRAME_MIN_SIZE)
+				continue;
+
+			priv->done = true;
+			complete(&priv->new_frame);
+			i++;
+			break;
+		}
+
+		priv->escaped = false;
+	}
+
+	return i;
+}
+
+static const struct serdev_device_ops sps30_serial_device_ops = {
+	.receive_buf = sps30_serial_receive_buf,
+	.write_wakeup = serdev_device_write_wakeup,
+};
+
+static int sps30_serial_start_meas(struct sps30_state *state)
+{
+	/* request BE IEEE754 formatted data */
+	unsigned char buf[] = { 0x01, 0x03 };
+
+	return sps30_serial_command(state, SPS30_SERIAL_START_MEAS, buf, sizeof(buf), NULL, 0);
+}
+
+static int sps30_serial_stop_meas(struct sps30_state *state)
+{
+	return sps30_serial_command(state, SPS30_SERIAL_STOP_MEAS, NULL, 0, NULL, 0);
+}
+
+static int sps30_serial_reset(struct sps30_state *state)
+{
+	int ret;
+
+	ret = sps30_serial_command(state, SPS30_SERIAL_RESET, NULL, 0, NULL, 0);
+	msleep(500);
+
+	return ret;
+}
+
+static int sps30_serial_read_meas(struct sps30_state *state, __be32 *meas, size_t num)
+{
+	int ret;
+
+	/* measurements are ready within a second */
+	if (msleep_interruptible(1000))
+		return -EINTR;
+
+	ret = sps30_serial_command(state, SPS30_SERIAL_READ_MEAS, NULL, 0, meas, num * sizeof(num));
+	if (ret < 0)
+		return ret;
+	/* if measurements aren't ready sensor returns empty frame */
+	if (ret == SPS30_SERIAL_FRAME_MIN_SIZE)
+		return -ETIMEDOUT;
+	if (ret != num * sizeof(*meas))
+		return -EIO;
+
+	return 0;
+}
+
+static int sps30_serial_clean_fan(struct sps30_state *state)
+{
+	return sps30_serial_command(state, SPS30_SERIAL_CLEAN_FAN, NULL, 0, NULL, 0);
+}
+
+static int sps30_serial_read_cleaning_period(struct sps30_state *state, __be32 *period)
+{
+	unsigned char buf[] = { 0x00 };
+	int ret;
+
+	ret = sps30_serial_command(state, SPS30_SERIAL_PERIOD, buf, sizeof(buf),
+				   period, sizeof(*period));
+	if (ret < 0)
+		return ret;
+	if (ret != sizeof(*period))
+		return -EIO;
+
+	return 0;
+}
+
+static int sps30_serial_write_cleaning_period(struct sps30_state *state, __be32 period)
+{
+	unsigned char buf[5] = { 0x00 };
+
+	memcpy(buf + 1, &period, sizeof(period));
+
+	return sps30_serial_command(state, SPS30_SERIAL_PERIOD, buf, sizeof(buf), NULL, 0);
+}
+
+static int sps30_serial_show_info(struct sps30_state *state)
+{
+	/*
+	 * tell device do return serial number and add extra nul byte just in case
+	 * serial number isn't a valid string
+	 */
+	unsigned char buf[32 + 1] = { 0x03 };
+	struct device *dev = state->dev;
+	int ret;
+
+	ret = sps30_serial_command(state, SPS30_SERIAL_DEV_INFO, buf, 1, buf, sizeof(buf) - 1);
+	if (ret < 0)
+		return ret;
+	if (ret != sizeof(buf) - 1)
+		return -EIO;
+
+	dev_info(dev, "serial number: %s\n", buf);
+
+	ret = sps30_serial_command(state, SPS30_SERIAL_READ_VERSION, NULL, 0, buf, sizeof(buf) - 1);
+	if (ret < 0)
+		return ret;
+	if (ret < 2)
+		return -EIO;
+
+	dev_info(dev, "fw version: %u.%u\n", buf[0], buf[1]);
+
+	return 0;
+}
+
+static const struct sps30_ops sps30_serial_ops = {
+	.start_meas = sps30_serial_start_meas,
+	.stop_meas = sps30_serial_stop_meas,
+	.read_meas = sps30_serial_read_meas,
+	.reset = sps30_serial_reset,
+	.clean_fan = sps30_serial_clean_fan,
+	.read_cleaning_period = sps30_serial_read_cleaning_period,
+	.write_cleaning_period = sps30_serial_write_cleaning_period,
+	.show_info = sps30_serial_show_info,
+};
+
+static int sps30_serial_probe(struct serdev_device *serdev)
+{
+	struct device *dev = &serdev->dev;
+	struct sps30_serial_priv *priv;
+	int ret;
+
+	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	init_completion(&priv->new_frame);
+	serdev_device_set_client_ops(serdev, &sps30_serial_device_ops);
+
+	ret = devm_serdev_device_open(dev, serdev);
+	if (ret)
+		return ret;
+
+	serdev_device_set_baudrate(serdev, 115200);
+	serdev_device_set_flow_control(serdev, false);
+
+	ret = serdev_device_set_parity(serdev, SERDEV_PARITY_NONE);
+	if (ret)
+		return ret;
+
+	return sps30_probe(dev, SPS30_SERIAL_DEV_NAME, priv, &sps30_serial_ops);
+}
+
+static const struct of_device_id sps30_serial_of_match[] = {
+	{ .compatible = "sensirion,sps30" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sps30_serial_of_match);
+
+static struct serdev_device_driver sps30_serial_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = sps30_serial_of_match,
+	},
+	.probe = sps30_serial_probe,
+};
+module_serdev_device_driver(sps30_serial_driver);
+
+MODULE_AUTHOR("Tomasz Duszynski <tomasz.duszynski@octakon.com>");
+MODULE_DESCRIPTION("Sensirion SPS30 particulate matter sensor serial driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_SPS30);
diff --git a/drivers/iio/chemical/sunrise_co2.c b/drivers/iio/chemical/sunrise_co2.c
new file mode 100644
index 000000000000..8440dc0c77cf
--- /dev/null
+++ b/drivers/iio/chemical/sunrise_co2.c
@@ -0,0 +1,537 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Senseair Sunrise 006-0-0007 CO2 sensor driver.
+ *
+ * Copyright (C) 2021 Jacopo Mondi
+ *
+ * List of features not yet supported by the driver:
+ * - controllable EN pin
+ * - single-shot operations using the nDRY pin.
+ * - ABC/target calibration
+ */
+
+#include <linux/bitops.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/time64.h>
+
+#include <linux/iio/iio.h>
+
+#define DRIVER_NAME "sunrise_co2"
+
+#define SUNRISE_ERROR_STATUS_REG		0x00
+#define SUNRISE_CO2_FILTERED_COMP_REG		0x06
+#define SUNRISE_CHIP_TEMPERATURE_REG		0x08
+#define SUNRISE_CALIBRATION_STATUS_REG		0x81
+#define SUNRISE_CALIBRATION_COMMAND_REG		0x82
+#define SUNRISE_CALIBRATION_FACTORY_CMD		0x7c02
+#define SUNRISE_CALIBRATION_BACKGROUND_CMD	0x7c06
+/*
+ * The calibration timeout is not characterized in the datasheet.
+ * Use 30 seconds as a reasonable upper limit.
+ */
+#define SUNRISE_CALIBRATION_TIMEOUT_US		(30 * USEC_PER_SEC)
+
+struct sunrise_dev {
+	struct i2c_client *client;
+	struct regmap *regmap;
+	/* Protects access to IIO attributes. */
+	struct mutex lock;
+	bool ignore_nak;
+};
+
+/* Custom regmap read/write operations: perform unlocked access to the i2c bus. */
+
+static int sunrise_regmap_read(void *context, const void *reg_buf,
+			       size_t reg_size, void *val_buf, size_t val_size)
+{
+	struct i2c_client *client = context;
+	struct sunrise_dev *sunrise = i2c_get_clientdata(client);
+	union i2c_smbus_data data;
+	int ret;
+
+	if (reg_size != 1 || !val_size)
+		return -EINVAL;
+
+	memset(&data, 0, sizeof(data));
+	data.block[0] = val_size;
+
+	/*
+	 * Wake up sensor by sending sensor address: START, sensor address,
+	 * STOP. Sensor will not ACK this byte.
+	 *
+	 * The chip enters a low power state after 15ms without
+	 * communications or after a complete read/write sequence.
+	 */
+	__i2c_smbus_xfer(client->adapter, client->addr,
+			 sunrise->ignore_nak ? I2C_M_IGNORE_NAK : 0,
+			 I2C_SMBUS_WRITE, 0, I2C_SMBUS_BYTE_DATA, &data);
+
+	usleep_range(500, 1500);
+
+	ret = __i2c_smbus_xfer(client->adapter, client->addr, client->flags,
+			       I2C_SMBUS_READ, ((u8 *)reg_buf)[0],
+			       I2C_SMBUS_I2C_BLOCK_DATA, &data);
+	if (ret < 0)
+		return ret;
+
+	memcpy(val_buf, &data.block[1], data.block[0]);
+
+	return 0;
+}
+
+static int sunrise_regmap_write(void *context, const void *val_buf, size_t count)
+{
+	struct i2c_client *client = context;
+	struct sunrise_dev *sunrise = i2c_get_clientdata(client);
+	union i2c_smbus_data data;
+
+	/* Discard reg address from values count. */
+	if (!count)
+		return -EINVAL;
+	count--;
+
+	memset(&data, 0, sizeof(data));
+	data.block[0] = count;
+	memcpy(&data.block[1], (u8 *)val_buf + 1, count);
+
+	__i2c_smbus_xfer(client->adapter, client->addr,
+			 sunrise->ignore_nak ? I2C_M_IGNORE_NAK : 0,
+			 I2C_SMBUS_WRITE, 0, I2C_SMBUS_BYTE_DATA, &data);
+
+	usleep_range(500, 1500);
+
+	return __i2c_smbus_xfer(client->adapter, client->addr, client->flags,
+				I2C_SMBUS_WRITE, ((u8 *)val_buf)[0],
+				I2C_SMBUS_I2C_BLOCK_DATA, &data);
+}
+
+/*
+ * Sunrise i2c read/write operations: lock the i2c segment to avoid losing the
+ * wake up session. Use custom regmap operations that perform unlocked access to
+ * the i2c bus.
+ */
+static int sunrise_read_byte(struct sunrise_dev *sunrise, u8 reg)
+{
+	const struct i2c_client *client = sunrise->client;
+	const struct device *dev = &client->dev;
+	unsigned int val;
+	int ret;
+
+	i2c_lock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	ret = regmap_read(sunrise->regmap, reg, &val);
+	i2c_unlock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	if (ret) {
+		dev_err(dev, "Read byte failed: reg 0x%02x (%d)\n", reg, ret);
+		return ret;
+	}
+
+	return val;
+}
+
+static int sunrise_read_word(struct sunrise_dev *sunrise, u8 reg, u16 *val)
+{
+	const struct i2c_client *client = sunrise->client;
+	const struct device *dev = &client->dev;
+	__be16 be_val;
+	int ret;
+
+	i2c_lock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	ret = regmap_bulk_read(sunrise->regmap, reg, &be_val, sizeof(be_val));
+	i2c_unlock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	if (ret) {
+		dev_err(dev, "Read word failed: reg 0x%02x (%d)\n", reg, ret);
+		return ret;
+	}
+
+	*val = be16_to_cpu(be_val);
+
+	return 0;
+}
+
+static int sunrise_write_byte(struct sunrise_dev *sunrise, u8 reg, u8 val)
+{
+	const struct i2c_client *client = sunrise->client;
+	const struct device *dev = &client->dev;
+	int ret;
+
+	i2c_lock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	ret = regmap_write(sunrise->regmap, reg, val);
+	i2c_unlock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	if (ret)
+		dev_err(dev, "Write byte failed: reg 0x%02x (%d)\n", reg, ret);
+
+	return ret;
+}
+
+static int sunrise_write_word(struct sunrise_dev *sunrise, u8 reg, u16 data)
+{
+	const struct i2c_client *client = sunrise->client;
+	const struct device *dev = &client->dev;
+	__be16 be_data = cpu_to_be16(data);
+	int ret;
+
+	i2c_lock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	ret = regmap_bulk_write(sunrise->regmap, reg, &be_data, sizeof(be_data));
+	i2c_unlock_bus(client->adapter, I2C_LOCK_SEGMENT);
+	if (ret)
+		dev_err(dev, "Write word failed: reg 0x%02x (%d)\n", reg, ret);
+
+	return ret;
+}
+
+/* Trigger a calibration cycle. */
+
+enum {
+	SUNRISE_CALIBRATION_FACTORY,
+	SUNRISE_CALIBRATION_BACKGROUND,
+};
+
+static const struct sunrise_calib_data {
+	u16 cmd;
+	u8 bit;
+	const char * const name;
+} calib_data[] = {
+	[SUNRISE_CALIBRATION_FACTORY] = {
+		SUNRISE_CALIBRATION_FACTORY_CMD,
+		BIT(2),
+		"factory_calibration",
+	},
+	[SUNRISE_CALIBRATION_BACKGROUND] = {
+		SUNRISE_CALIBRATION_BACKGROUND_CMD,
+		BIT(5),
+		"background_calibration",
+	},
+};
+
+static int sunrise_calibrate(struct sunrise_dev *sunrise,
+			     const struct sunrise_calib_data *data)
+{
+	unsigned int status;
+	int ret;
+
+	/* Reset the calibration status reg. */
+	ret = sunrise_write_byte(sunrise, SUNRISE_CALIBRATION_STATUS_REG, 0x00);
+	if (ret)
+		return ret;
+
+	/* Write a calibration command and poll the calibration status bit. */
+	ret = sunrise_write_word(sunrise, SUNRISE_CALIBRATION_COMMAND_REG, data->cmd);
+	if (ret)
+		return ret;
+
+	dev_dbg(&sunrise->client->dev, "%s in progress\n", data->name);
+
+	/*
+	 * Calibration takes several seconds, so the sleep time between reads
+	 * can be pretty relaxed.
+	 */
+	return read_poll_timeout(sunrise_read_byte, status, status & data->bit,
+				 200000, SUNRISE_CALIBRATION_TIMEOUT_US, false,
+				 sunrise, SUNRISE_CALIBRATION_STATUS_REG);
+}
+
+static ssize_t sunrise_cal_factory_write(struct iio_dev *iiodev,
+					 uintptr_t private,
+					 const struct iio_chan_spec *chan,
+					 const char *buf, size_t len)
+{
+	struct sunrise_dev *sunrise = iio_priv(iiodev);
+	bool enable;
+	int ret;
+
+	ret = kstrtobool(buf, &enable);
+	if (ret)
+		return ret;
+
+	if (!enable)
+		return len;
+
+	mutex_lock(&sunrise->lock);
+	ret = sunrise_calibrate(sunrise, &calib_data[SUNRISE_CALIBRATION_FACTORY]);
+	mutex_unlock(&sunrise->lock);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static ssize_t sunrise_cal_background_write(struct iio_dev *iiodev,
+					    uintptr_t private,
+					    const struct iio_chan_spec *chan,
+					    const char *buf, size_t len)
+{
+	struct sunrise_dev *sunrise = iio_priv(iiodev);
+	bool enable;
+	int ret;
+
+	ret = kstrtobool(buf, &enable);
+	if (ret)
+		return ret;
+
+	if (!enable)
+		return len;
+
+	mutex_lock(&sunrise->lock);
+	ret = sunrise_calibrate(sunrise, &calib_data[SUNRISE_CALIBRATION_BACKGROUND]);
+	mutex_unlock(&sunrise->lock);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+ /* Enumerate and retrieve the chip error status. */
+enum {
+	SUNRISE_ERROR_FATAL,
+	SUNRISE_ERROR_I2C,
+	SUNRISE_ERROR_ALGORITHM,
+	SUNRISE_ERROR_CALIBRATION,
+	SUNRISE_ERROR_SELF_DIAGNOSTIC,
+	SUNRISE_ERROR_OUT_OF_RANGE,
+	SUNRISE_ERROR_MEMORY,
+	SUNRISE_ERROR_NO_MEASUREMENT,
+	SUNRISE_ERROR_LOW_VOLTAGE,
+	SUNRISE_ERROR_MEASUREMENT_TIMEOUT,
+};
+
+static const char * const sunrise_error_statuses[] = {
+	[SUNRISE_ERROR_FATAL] = "error_fatal",
+	[SUNRISE_ERROR_I2C] = "error_i2c",
+	[SUNRISE_ERROR_ALGORITHM] = "error_algorithm",
+	[SUNRISE_ERROR_CALIBRATION] = "error_calibration",
+	[SUNRISE_ERROR_SELF_DIAGNOSTIC] = "error_self_diagnostic",
+	[SUNRISE_ERROR_OUT_OF_RANGE] = "error_out_of_range",
+	[SUNRISE_ERROR_MEMORY] = "error_memory",
+	[SUNRISE_ERROR_NO_MEASUREMENT] = "error_no_measurement",
+	[SUNRISE_ERROR_LOW_VOLTAGE] = "error_low_voltage",
+	[SUNRISE_ERROR_MEASUREMENT_TIMEOUT] = "error_measurement_timeout",
+};
+
+static const struct iio_enum sunrise_error_statuses_enum = {
+	.items = sunrise_error_statuses,
+	.num_items = ARRAY_SIZE(sunrise_error_statuses),
+};
+
+static ssize_t sunrise_error_status_read(struct iio_dev *iiodev,
+					 uintptr_t private,
+					 const struct iio_chan_spec *chan,
+					 char *buf)
+{
+	struct sunrise_dev *sunrise = iio_priv(iiodev);
+	unsigned long errors;
+	ssize_t len = 0;
+	u16 value;
+	int ret;
+	u8 i;
+
+	mutex_lock(&sunrise->lock);
+	ret = sunrise_read_word(sunrise, SUNRISE_ERROR_STATUS_REG, &value);
+	if (ret) {
+		mutex_unlock(&sunrise->lock);
+		return ret;
+	}
+
+	errors = value;
+	for_each_set_bit(i, &errors, ARRAY_SIZE(sunrise_error_statuses))
+		len += sysfs_emit_at(buf, len, "%s ", sunrise_error_statuses[i]);
+
+	if (len)
+		buf[len - 1] = '\n';
+
+	mutex_unlock(&sunrise->lock);
+
+	return len;
+}
+
+static const struct iio_chan_spec_ext_info sunrise_concentration_ext_info[] = {
+	/* Calibration triggers. */
+	{
+		.name = "calibration_factory",
+		.write = sunrise_cal_factory_write,
+		.shared = IIO_SEPARATE,
+	},
+	{
+		.name = "calibration_background",
+		.write = sunrise_cal_background_write,
+		.shared = IIO_SEPARATE,
+	},
+
+	/* Error statuses. */
+	{
+		.name = "error_status",
+		.read = sunrise_error_status_read,
+		.shared = IIO_SHARED_BY_ALL,
+	},
+	{
+		.name = "error_status_available",
+		.shared = IIO_SHARED_BY_ALL,
+		.read = iio_enum_available_read,
+		.private = (uintptr_t)&sunrise_error_statuses_enum,
+	},
+	{}
+};
+
+static const struct iio_chan_spec sunrise_channels[] = {
+	{
+		.type = IIO_CONCENTRATION,
+		.modified = 1,
+		.channel2 = IIO_MOD_CO2,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.ext_info = sunrise_concentration_ext_info,
+	},
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static int sunrise_read_raw(struct iio_dev *iio_dev,
+			    const struct iio_chan_spec *chan,
+			    int *val, int *val2, long mask)
+{
+	struct sunrise_dev *sunrise = iio_priv(iio_dev);
+	u16 value;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_CONCENTRATION:
+			mutex_lock(&sunrise->lock);
+			ret = sunrise_read_word(sunrise, SUNRISE_CO2_FILTERED_COMP_REG,
+						&value);
+			mutex_unlock(&sunrise->lock);
+
+			if (ret)
+				return ret;
+
+			*val = value;
+			return IIO_VAL_INT;
+
+		case IIO_TEMP:
+			mutex_lock(&sunrise->lock);
+			ret = sunrise_read_word(sunrise, SUNRISE_CHIP_TEMPERATURE_REG,
+						&value);
+			mutex_unlock(&sunrise->lock);
+
+			if (ret)
+				return ret;
+
+			*val = value;
+			return IIO_VAL_INT;
+
+		default:
+			return -EINVAL;
+		}
+
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_CONCENTRATION:
+			/*
+			 * 1 / 10^4 to comply with IIO scale for CO2
+			 * (percentage). The chip CO2 reading range is [400 -
+			 * 5000] ppm which corresponds to [0,004 - 0,5] %.
+			 */
+			*val = 1;
+			*val2 = 10000;
+			return IIO_VAL_FRACTIONAL;
+
+		case IIO_TEMP:
+			/* x10 to comply with IIO scale (millidegrees celsius). */
+			*val = 10;
+			return IIO_VAL_INT;
+
+		default:
+			return -EINVAL;
+		}
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info sunrise_info = {
+	.read_raw = sunrise_read_raw,
+};
+
+static const struct regmap_bus sunrise_regmap_bus = {
+	.read = sunrise_regmap_read,
+	.write = sunrise_regmap_write,
+};
+
+static const struct regmap_config sunrise_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+};
+
+static int sunrise_probe(struct i2c_client *client)
+{
+	struct sunrise_dev *sunrise;
+	struct iio_dev *iio_dev;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA |
+						      I2C_FUNC_SMBUS_BLOCK_DATA)) {
+		dev_err(&client->dev,
+			"Adapter does not support required functionalities\n");
+		return -EOPNOTSUPP;
+	}
+
+	iio_dev = devm_iio_device_alloc(&client->dev, sizeof(*sunrise));
+	if (!iio_dev)
+		return -ENOMEM;
+
+	sunrise = iio_priv(iio_dev);
+	sunrise->client = client;
+	mutex_init(&sunrise->lock);
+
+	i2c_set_clientdata(client, sunrise);
+
+	sunrise->regmap = devm_regmap_init(&client->dev, &sunrise_regmap_bus,
+					   client, &sunrise_regmap_config);
+	if (IS_ERR(sunrise->regmap)) {
+		dev_err(&client->dev, "Failed to initialize regmap\n");
+		return PTR_ERR(sunrise->regmap);
+	}
+
+	/*
+	 * The chip nacks the wake up message. If the adapter does not support
+	 * protocol mangling do not set the I2C_M_IGNORE_NAK flag at the expense
+	 * of possible cruft in the logs.
+	 */
+	if (i2c_check_functionality(client->adapter, I2C_FUNC_PROTOCOL_MANGLING))
+		sunrise->ignore_nak = true;
+
+	iio_dev->info = &sunrise_info;
+	iio_dev->name = DRIVER_NAME;
+	iio_dev->channels = sunrise_channels;
+	iio_dev->num_channels = ARRAY_SIZE(sunrise_channels);
+	iio_dev->modes = INDIO_DIRECT_MODE;
+
+	return devm_iio_device_register(&client->dev, iio_dev);
+}
+
+static const struct of_device_id sunrise_of_match[] = {
+	{ .compatible = "senseair,sunrise-006-0-0007" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sunrise_of_match);
+
+static struct i2c_driver sunrise_driver = {
+	.driver = {
+		.name = DRIVER_NAME,
+		.of_match_table = sunrise_of_match,
+	},
+	.probe_new = sunrise_probe,
+};
+module_i2c_driver(sunrise_driver);
+
+MODULE_AUTHOR("Jacopo Mondi <jacopo@jmondi.org>");
+MODULE_DESCRIPTION("Senseair Sunrise 006-0-0007 CO2 sensor IIO driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/chemical/vz89x.c b/drivers/iio/chemical/vz89x.c
index 415b39339d4e..e7e1c74a351e 100644
--- a/drivers/iio/chemical/vz89x.c
+++ b/drivers/iio/chemical/vz89x.c
@@ -10,8 +10,7 @@
 #include <linux/mutex.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -243,7 +242,7 @@ static int vz89x_get_resistance_reading(struct vz89x_data *data,
 					struct iio_chan_spec const *chan,
 					int *val)
 {
-	u8 *tmp = (u8 *) &data->buffer[chan->address];
+	u8 *tmp = &data->buffer[chan->address];
 
 	switch (chan->scan_type.endianness) {
 	case IIO_LE:
@@ -352,12 +351,12 @@ MODULE_DEVICE_TABLE(of, vz89x_dt_ids);
 static int vz89x_probe(struct i2c_client *client,
 		       const struct i2c_device_id *id)
 {
+	struct device *dev = &client->dev;
 	struct iio_dev *indio_dev;
 	struct vz89x_data *data;
-	const struct of_device_id *of_id;
 	int chip_id;
 
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
 	if (!indio_dev)
 		return -ENOMEM;
 	data = iio_priv(indio_dev);
@@ -370,11 +369,10 @@ static int vz89x_probe(struct i2c_client *client,
 	else
 		return -EOPNOTSUPP;
 
-	of_id = of_match_device(vz89x_dt_ids, &client->dev);
-	if (!of_id)
+	if (!dev_fwnode(dev))
 		chip_id = id->driver_data;
 	else
-		chip_id = (unsigned long)of_id->data;
+		chip_id = (unsigned long)device_get_match_data(dev);
 
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
@@ -382,15 +380,14 @@ static int vz89x_probe(struct i2c_client *client,
 	data->last_update = jiffies - HZ;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &vz89x_info;
-	indio_dev->name = dev_name(&client->dev);
+	indio_dev->name = dev_name(dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	indio_dev->channels = data->chip->channels;
 	indio_dev->num_channels = data->chip->num_channels;
 
-	return devm_iio_device_register(&client->dev, indio_dev);
+	return devm_iio_device_register(dev, indio_dev);
 }
 
 static const struct i2c_device_id vz89x_id[] = {
@@ -403,7 +400,7 @@ MODULE_DEVICE_TABLE(i2c, vz89x_id);
 static struct i2c_driver vz89x_driver = {
 	.driver = {
 		.name	= "vz89x",
-		.of_match_table = of_match_ptr(vz89x_dt_ids),
+		.of_match_table = vz89x_dt_ids,
 	},
 	.probe = vz89x_probe,
 	.id_table = vz89x_id,
diff --git a/drivers/iio/common/Kconfig b/drivers/iio/common/Kconfig
index 2b9ee9161abd..0334b4954773 100644
--- a/drivers/iio/common/Kconfig
+++ b/drivers/iio/common/Kconfig
@@ -6,5 +6,6 @@
 source "drivers/iio/common/cros_ec_sensors/Kconfig"
 source "drivers/iio/common/hid-sensors/Kconfig"
 source "drivers/iio/common/ms_sensors/Kconfig"
+source "drivers/iio/common/scmi_sensors/Kconfig"
 source "drivers/iio/common/ssp_sensors/Kconfig"
 source "drivers/iio/common/st_sensors/Kconfig"
diff --git a/drivers/iio/common/Makefile b/drivers/iio/common/Makefile
index 4bc30bb548e2..fad40e1e1718 100644
--- a/drivers/iio/common/Makefile
+++ b/drivers/iio/common/Makefile
@@ -11,5 +11,6 @@
 obj-y += cros_ec_sensors/
 obj-y += hid-sensors/
 obj-y += ms_sensors/
+obj-y += scmi_sensors/
 obj-y += ssp_sensors/
 obj-y += st_sensors/
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
index 1dcc2a16ab2d..119acb078af3 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_lid_angle.c
@@ -20,6 +20,7 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_data/cros_ec_commands.h>
 #include <linux/platform_device.h>
@@ -97,7 +98,7 @@ static int cros_ec_lid_angle_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, false);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, false, NULL);
 	if (ret)
 		return ret;
 
@@ -113,7 +114,7 @@ static int cros_ec_lid_angle_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	return devm_iio_device_register(dev, indio_dev);
+	return cros_ec_sensors_core_register(dev, indio_dev, NULL);
 }
 
 static const struct platform_device_id cros_ec_lid_angle_ids[] = {
@@ -127,7 +128,6 @@ MODULE_DEVICE_TABLE(platform, cros_ec_lid_angle_ids);
 static struct platform_driver cros_ec_lid_angle_platform_driver = {
 	.driver = {
 		.name	= DRV_NAME,
-		.pm	= &cros_ec_sensors_pm_ops,
 	},
 	.probe		= cros_ec_lid_angle_probe,
 	.id_table	= cros_ec_lid_angle_ids,
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
index 576e45faafaf..66153b1850f1 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c
@@ -16,6 +16,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_data/cros_ec_commands.h>
 #include <linux/platform_data/cros_ec_proto.h>
@@ -73,7 +74,7 @@ static int cros_ec_sensors_read(struct iio_dev *indio_dev,
 		st->core.param.sensor_offset.flags = 0;
 
 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);
-		if (ret == -EPROTO) {
+		if (ret == -EPROTO || ret == -EOPNOTSUPP) {
 			/* Reading calibscale is not supported on older EC. */
 			*val = 1;
 			*val2 = 0;
@@ -200,6 +201,10 @@ static int cros_ec_sensors_write(struct iio_dev *indio_dev,
 		st->core.param.sensor_range.roundup = 1;
 
 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);
+		if (ret == 0) {
+			st->core.range_updated = true;
+			st->core.curr_range = val;
+		}
 		break;
 	default:
 		ret = cros_ec_sensors_core_write(
@@ -230,7 +235,8 @@ static int cros_ec_sensors_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+					cros_ec_sensors_capture);
 	if (ret)
 		return ret;
 
@@ -245,7 +251,6 @@ static int cros_ec_sensors_probe(struct platform_device *pdev)
 			BIT(IIO_CHAN_INFO_CALIBSCALE);
 		channel->info_mask_shared_by_all =
 			BIT(IIO_CHAN_INFO_SCALE) |
-			BIT(IIO_CHAN_INFO_FREQUENCY) |
 			BIT(IIO_CHAN_INFO_SAMP_FREQ);
 		channel->info_mask_shared_by_all_available =
 			BIT(IIO_CHAN_INFO_SAMP_FREQ);
@@ -292,12 +297,8 @@ static int cros_ec_sensors_probe(struct platform_device *pdev)
 	else
 		state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-			cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
-	return devm_iio_device_register(dev, indio_dev);
+	return cros_ec_sensors_core_register(dev, indio_dev,
+			cros_ec_sensors_push_data);
 }
 
 static const struct platform_device_id cros_ec_sensors_ids[] = {
diff --git a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
index d3a3626c7cd8..05a28d353e34 100644
--- a/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
+++ b/drivers/iio/common/cros_ec_sensors/cros_ec_sensors_core.c
@@ -11,7 +11,10 @@
 #include <linux/iio/common/cros_ec_sensors_core.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/slab.h>
@@ -20,11 +23,11 @@
 #include <linux/platform_data/cros_ec_sensorhub.h>
 #include <linux/platform_device.h>
 
-static char *cros_ec_loc[] = {
-	[MOTIONSENSE_LOC_BASE] = "base",
-	[MOTIONSENSE_LOC_LID] = "lid",
-	[MOTIONSENSE_LOC_MAX] = "unknown",
-};
+/*
+ * Hard coded to the first device to support sensor fifo.  The EC has a 2048
+ * byte fifo and will trigger an interrupt when fifo is 2/3 full.
+ */
+#define CROS_EC_FIFO_SIZE (2048 * 2 / 3)
 
 static int cros_ec_get_host_cmd_version_mask(struct cros_ec_device *ec_dev,
 					     u16 cmd_offset, u16 cmd, u32 *mask)
@@ -53,14 +56,24 @@ static int cros_ec_get_host_cmd_version_mask(struct cros_ec_device *ec_dev,
 
 static void get_default_min_max_freq(enum motionsensor_type type,
 				     u32 *min_freq,
-				     u32 *max_freq)
+				     u32 *max_freq,
+				     u32 *max_fifo_events)
 {
+	/*
+	 * We don't know fifo size, set to size previously used by older
+	 * hardware.
+	 */
+	*max_fifo_events = CROS_EC_FIFO_SIZE;
+
 	switch (type) {
 	case MOTIONSENSE_TYPE_ACCEL:
-	case MOTIONSENSE_TYPE_GYRO:
 		*min_freq = 12500;
 		*max_freq = 100000;
 		break;
+	case MOTIONSENSE_TYPE_GYRO:
+		*min_freq = 25000;
+		*max_freq = 100000;
+		break;
 	case MOTIONSENSE_TYPE_MAG:
 		*min_freq = 5000;
 		*max_freq = 25000;
@@ -82,16 +95,159 @@ static void get_default_min_max_freq(enum motionsensor_type type,
 	}
 }
 
+static int cros_ec_sensor_set_ec_rate(struct cros_ec_sensors_core_state *st,
+				      int rate)
+{
+	int ret;
+
+	if (rate > U16_MAX)
+		rate = U16_MAX;
+
+	mutex_lock(&st->cmd_lock);
+	st->param.cmd = MOTIONSENSE_CMD_EC_RATE;
+	st->param.ec_rate.data = rate;
+	ret = cros_ec_motion_send_host_cmd(st, 0);
+	mutex_unlock(&st->cmd_lock);
+	return ret;
+}
+
+static ssize_t cros_ec_sensor_set_report_latency(struct device *dev,
+						 struct device_attribute *attr,
+						 const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+	int integer, fract, ret;
+	int latency;
+
+	ret = iio_str_to_fixpoint(buf, 100000, &integer, &fract);
+	if (ret)
+		return ret;
+
+	/* EC rate is in ms. */
+	latency = integer * 1000 + fract / 1000;
+	ret = cros_ec_sensor_set_ec_rate(st, latency);
+	if (ret < 0)
+		return ret;
+
+	return len;
+}
+
+static ssize_t cros_ec_sensor_get_report_latency(struct device *dev,
+						 struct device_attribute *attr,
+						 char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+	int latency, ret;
+
+	mutex_lock(&st->cmd_lock);
+	st->param.cmd = MOTIONSENSE_CMD_EC_RATE;
+	st->param.ec_rate.data = EC_MOTION_SENSE_NO_VALUE;
+
+	ret = cros_ec_motion_send_host_cmd(st, 0);
+	latency = st->resp->ec_rate.ret;
+	mutex_unlock(&st->cmd_lock);
+	if (ret < 0)
+		return ret;
+
+	return sprintf(buf, "%d.%06u\n",
+		       latency / 1000,
+		       (latency % 1000) * 1000);
+}
+
+static IIO_DEVICE_ATTR(hwfifo_timeout, 0644,
+		       cros_ec_sensor_get_report_latency,
+		       cros_ec_sensor_set_report_latency, 0);
+
+static ssize_t hwfifo_watermark_max_show(struct device *dev,
+					 struct device_attribute *attr,
+					 char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+
+	return sprintf(buf, "%d\n", st->fifo_max_event_count);
+}
+
+static IIO_DEVICE_ATTR_RO(hwfifo_watermark_max, 0);
+
+static const struct attribute *cros_ec_sensor_fifo_attributes[] = {
+	&iio_dev_attr_hwfifo_timeout.dev_attr.attr,
+	&iio_dev_attr_hwfifo_watermark_max.dev_attr.attr,
+	NULL,
+};
+
+int cros_ec_sensors_push_data(struct iio_dev *indio_dev,
+			      s16 *data,
+			      s64 timestamp)
+{
+	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+	s16 *out;
+	s64 delta;
+	unsigned int i;
+
+	/*
+	 * Ignore samples if the buffer is not set: it is needed if the ODR is
+	 * set but the buffer is not enabled yet.
+	 */
+	if (!iio_buffer_enabled(indio_dev))
+		return 0;
+
+	out = (s16 *)st->samples;
+	for_each_set_bit(i,
+			 indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		*out = data[i];
+		out++;
+	}
+
+	if (iio_device_get_clock(indio_dev) != CLOCK_BOOTTIME)
+		delta = iio_get_time_ns(indio_dev) - cros_ec_get_time_ns();
+	else
+		delta = 0;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, st->samples,
+					   timestamp + delta);
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(cros_ec_sensors_push_data);
+
+static void cros_ec_sensors_core_clean(void *arg)
+{
+	struct platform_device *pdev = (struct platform_device *)arg;
+	struct cros_ec_sensorhub *sensor_hub =
+		dev_get_drvdata(pdev->dev.parent);
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+	u8 sensor_num = st->param.info.sensor_num;
+
+	cros_ec_sensorhub_unregister_push_data(sensor_hub, sensor_num);
+}
+
+/**
+ * cros_ec_sensors_core_init() - basic initialization of the core structure
+ * @pdev:		platform device created for the sensor
+ * @indio_dev:		iio device structure of the device
+ * @physical_device:	true if the device refers to a physical device
+ * @trigger_capture:    function pointer to call buffer is triggered,
+ *    for backward compatibility.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
 int cros_ec_sensors_core_init(struct platform_device *pdev,
 			      struct iio_dev *indio_dev,
-			      bool physical_device)
+			      bool physical_device,
+			      cros_ec_sensors_capture_t trigger_capture)
 {
 	struct device *dev = &pdev->dev;
 	struct cros_ec_sensors_core_state *state = iio_priv(indio_dev);
 	struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent);
 	struct cros_ec_dev *ec = sensor_hub->ec;
 	struct cros_ec_sensor_platform *sensor_platform = dev_get_platdata(dev);
-	u32 ver_mask;
+	u32 ver_mask, temp;
+	int frequencies[ARRAY_SIZE(state->frequencies) / 2] = { 0 };
 	int ret, i;
 
 	platform_set_drvdata(pdev, indio_dev);
@@ -119,11 +275,10 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
 	state->msg->command = EC_CMD_MOTION_SENSE_CMD + ec->cmd_offset;
 	state->msg->outsize = sizeof(struct ec_params_motion_sense);
 
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->name = pdev->name;
 
 	if (physical_device) {
-		indio_dev->modes = INDIO_DIRECT_MODE;
+		enum motionsensor_location loc;
 
 		state->param.cmd = MOTIONSENSE_CMD_INFO;
 		state->param.info.sensor_num = sensor_platform->sensor_num;
@@ -133,7 +288,13 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
 			return ret;
 		}
 		state->type = state->resp->info.type;
-		state->loc = state->resp->info.location;
+		loc = state->resp->info.location;
+		if (loc == MOTIONSENSE_LOC_BASE)
+			indio_dev->label = "accel-base";
+		else if (loc == MOTIONSENSE_LOC_LID)
+			indio_dev->label = "accel-display";
+		else if (loc == MOTIONSENSE_LOC_CAMERA)
+			indio_dev->label = "accel-camera";
 
 		/* Set sign vector, only used for backward compatibility. */
 		memset(state->sign, 1, CROS_EC_SENSOR_MAX_AXIS);
@@ -142,16 +303,54 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
 			state->calib[i].scale = MOTION_SENSE_DEFAULT_SCALE;
 
 		/* 0 is a correct value used to stop the device */
-		state->frequencies[0] = 0;
 		if (state->msg->version < 3) {
 			get_default_min_max_freq(state->resp->info.type,
-						 &state->frequencies[1],
-						 &state->frequencies[2]);
+						 &frequencies[1],
+						 &frequencies[2],
+						 &state->fifo_max_event_count);
+		} else {
+			if (state->resp->info_3.max_frequency == 0) {
+				get_default_min_max_freq(state->resp->info.type,
+							 &frequencies[1],
+							 &frequencies[2],
+							 &temp);
+			} else {
+				frequencies[1] = state->resp->info_3.min_frequency;
+				frequencies[2] = state->resp->info_3.max_frequency;
+			}
+			state->fifo_max_event_count = state->resp->info_3.fifo_max_event_count;
+		}
+		for (i = 0; i < ARRAY_SIZE(frequencies); i++) {
+			state->frequencies[2 * i] = frequencies[i] / 1000;
+			state->frequencies[2 * i + 1] =
+				(frequencies[i] % 1000) * 1000;
+		}
+
+		if (cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO)) {
+			/*
+			 * Create a software buffer, feed by the EC FIFO.
+			 * We can not use trigger here, as events are generated
+			 * as soon as sample_frequency is set.
+			 */
+			ret = devm_iio_kfifo_buffer_setup_ext(dev, indio_dev, NULL,
+							      cros_ec_sensor_fifo_attributes);
+			if (ret)
+				return ret;
+
+			/* Timestamp coming from FIFO are in ns since boot. */
+			ret = iio_device_set_clock(indio_dev, CLOCK_BOOTTIME);
+			if (ret)
+				return ret;
+
 		} else {
-			state->frequencies[1] =
-			    state->resp->info_3.min_frequency;
-			state->frequencies[2] =
-			    state->resp->info_3.max_frequency;
+			/*
+			 * The only way to get samples in buffer is to set a
+			 * software trigger (systrig, hrtimer).
+			 */
+			ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					NULL, trigger_capture, NULL);
+			if (ret)
+				return ret;
 		}
 	}
 
@@ -159,6 +358,56 @@ int cros_ec_sensors_core_init(struct platform_device *pdev,
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_core_init);
 
+/**
+ * cros_ec_sensors_core_register() - Register callback to FIFO and IIO when
+ * sensor is ready.
+ * It must be called at the end of the sensor probe routine.
+ * @dev:		device created for the sensor
+ * @indio_dev:		iio device structure of the device
+ * @push_data:          function to call when cros_ec_sensorhub receives
+ *    a sample for that sensor.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
+int cros_ec_sensors_core_register(struct device *dev,
+				  struct iio_dev *indio_dev,
+				  cros_ec_sensorhub_push_data_cb_t push_data)
+{
+	struct cros_ec_sensor_platform *sensor_platform = dev_get_platdata(dev);
+	struct cros_ec_sensorhub *sensor_hub = dev_get_drvdata(dev->parent);
+	struct platform_device *pdev = to_platform_device(dev);
+	struct cros_ec_dev *ec = sensor_hub->ec;
+	int ret;
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return ret;
+
+	if (!push_data ||
+	    !cros_ec_check_features(ec, EC_FEATURE_MOTION_SENSE_FIFO))
+		return 0;
+
+	ret = cros_ec_sensorhub_register_push_data(
+			sensor_hub, sensor_platform->sensor_num,
+			indio_dev, push_data);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(
+			dev, cros_ec_sensors_core_clean, pdev);
+}
+EXPORT_SYMBOL_GPL(cros_ec_sensors_core_register);
+
+/**
+ * cros_ec_motion_send_host_cmd() - send motion sense host command
+ * @state:		pointer to state information for device
+ * @opt_length:	optional length to reduce the response size, useful on the data
+ *		path. Otherwise, the maximal allowed response size is used
+ *
+ * When called, the sub-command is assumed to be set in param->cmd.
+ *
+ * Return: 0 on success, -errno on failure.
+ */
 int cros_ec_motion_send_host_cmd(struct cros_ec_sensors_core_state *state,
 				 u16 opt_length)
 {
@@ -191,7 +440,7 @@ static ssize_t cros_ec_sensors_calibrate(struct iio_dev *indio_dev,
 	int ret, i;
 	bool calibrate;
 
-	ret = strtobool(buf, &calibrate);
+	ret = kstrtobool(buf, &calibrate);
 	if (ret < 0)
 		return ret;
 	if (!calibrate)
@@ -221,15 +470,6 @@ static ssize_t cros_ec_sensors_id(struct iio_dev *indio_dev,
 	return snprintf(buf, PAGE_SIZE, "%d\n", st->param.info.sensor_num);
 }
 
-static ssize_t cros_ec_sensors_loc(struct iio_dev *indio_dev,
-		uintptr_t private, const struct iio_chan_spec *chan,
-		char *buf)
-{
-	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
-
-	return snprintf(buf, PAGE_SIZE, "%s\n", cros_ec_loc[st->loc]);
-}
-
 const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[] = {
 	{
 		.name = "calibrate",
@@ -241,11 +481,6 @@ const struct iio_chan_spec_ext_info cros_ec_sensors_ext_info[] = {
 		.shared = IIO_SHARED_BY_ALL,
 		.read = cros_ec_sensors_id
 	},
-	{
-		.name = "location",
-		.shared = IIO_SHARED_BY_ALL,
-		.read = cros_ec_sensors_loc
-	},
 	{ },
 };
 EXPORT_SYMBOL_GPL(cros_ec_sensors_ext_info);
@@ -329,7 +564,7 @@ static int cros_ec_sensors_read_until_not_busy(
 }
 
 /**
- * read_ec_sensors_data_unsafe() - read acceleration data from EC shared memory
+ * cros_ec_sensors_read_data_unsafe() - read acceleration data from EC shared memory
  * @indio_dev:	pointer to IIO device
  * @scan_mask:	bitmap of the sensor indices to scan
  * @data:	location to store data
@@ -421,6 +656,14 @@ int cros_ec_sensors_read_lpc(struct iio_dev *indio_dev,
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_read_lpc);
 
+/**
+ * cros_ec_sensors_read_cmd() - retrieve data using the EC command protocol
+ * @indio_dev:	pointer to IIO device
+ * @scan_mask:	bitmap of the sensor indices to scan
+ * @data:	location to store data
+ *
+ * Return: 0 on success, -errno on failure.
+ */
 int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev,
 			     unsigned long scan_mask, s16 *data)
 {
@@ -445,6 +688,18 @@ int cros_ec_sensors_read_cmd(struct iio_dev *indio_dev,
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_read_cmd);
 
+/**
+ * cros_ec_sensors_capture() - the trigger handler function
+ * @irq:	the interrupt number.
+ * @p:		a pointer to the poll function.
+ *
+ * On a trigger event occurring, if the pollfunc is attached then this
+ * handler is called as a threaded interrupt (and hence may sleep). It
+ * is responsible for grabbing data from the device and pushing it into
+ * the associated buffer.
+ *
+ * Return: IRQ_HANDLED
+ */
 irqreturn_t cros_ec_sensors_capture(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
@@ -480,26 +735,24 @@ done:
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_capture);
 
+/**
+ * cros_ec_sensors_core_read() - function to request a value from the sensor
+ * @st:		pointer to state information for device
+ * @chan:	channel specification structure table
+ * @val:	will contain one element making up the returned value
+ * @val2:	will contain another element making up the returned value
+ * @mask:	specifies which values to be requested
+ *
+ * Return:	the type of value returned by the device
+ */
 int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
 			  struct iio_chan_spec const *chan,
 			  int *val, int *val2, long mask)
 {
-	int ret;
+	int ret, frequency;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		st->param.cmd = MOTIONSENSE_CMD_EC_RATE;
-		st->param.ec_rate.data =
-			EC_MOTION_SENSE_NO_VALUE;
-
-		ret = cros_ec_motion_send_host_cmd(st, 0);
-		if (ret)
-			break;
-
-		*val = st->resp->ec_rate.ret;
-		ret = IIO_VAL_INT;
-		break;
-	case IIO_CHAN_INFO_FREQUENCY:
 		st->param.cmd = MOTIONSENSE_CMD_SENSOR_ODR;
 		st->param.sensor_odr.data =
 			EC_MOTION_SENSE_NO_VALUE;
@@ -508,8 +761,10 @@ int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
 		if (ret)
 			break;
 
-		*val = st->resp->sensor_odr.ret;
-		ret = IIO_VAL_INT;
+		frequency = st->resp->sensor_odr.ret;
+		*val = frequency / 1000;
+		*val2 = (frequency % 1000) * 1000;
+		ret = IIO_VAL_INT_PLUS_MICRO;
 		break;
 	default:
 		ret = -EINVAL;
@@ -520,6 +775,17 @@ int cros_ec_sensors_core_read(struct cros_ec_sensors_core_state *st,
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_core_read);
 
+/**
+ * cros_ec_sensors_core_read_avail() - get available values
+ * @indio_dev:		pointer to state information for device
+ * @chan:	channel specification structure table
+ * @vals:	list of available values
+ * @type:	type of data returned
+ * @length:	number of data returned in the array
+ * @mask:	specifies which values to be requested
+ *
+ * Return:	an error code, IIO_AVAIL_RANGE or IIO_AVAIL_LIST
+ */
 int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev,
 				    struct iio_chan_spec const *chan,
 				    const int **vals,
@@ -533,7 +799,7 @@ int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		*length = ARRAY_SIZE(state->frequencies);
 		*vals = (const int *)&state->frequencies;
-		*type = IIO_VAL_INT;
+		*type = IIO_VAL_INT_PLUS_MICRO;
 		return IIO_AVAIL_LIST;
 	}
 
@@ -541,31 +807,33 @@ int cros_ec_sensors_core_read_avail(struct iio_dev *indio_dev,
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_core_read_avail);
 
+/**
+ * cros_ec_sensors_core_write() - function to write a value to the sensor
+ * @st:		pointer to state information for device
+ * @chan:	channel specification structure table
+ * @val:	first part of value to write
+ * @val2:	second part of value to write
+ * @mask:	specifies which values to write
+ *
+ * Return:	the type of value returned by the device
+ */
 int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st,
 			       struct iio_chan_spec const *chan,
 			       int val, int val2, long mask)
 {
-	int ret;
+	int ret, frequency;
 
 	switch (mask) {
-	case IIO_CHAN_INFO_FREQUENCY:
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		frequency = val * 1000 + val2 / 1000;
 		st->param.cmd = MOTIONSENSE_CMD_SENSOR_ODR;
-		st->param.sensor_odr.data = val;
+		st->param.sensor_odr.data = frequency;
 
 		/* Always roundup, so caller gets at least what it asks for. */
 		st->param.sensor_odr.roundup = 1;
 
 		ret = cros_ec_motion_send_host_cmd(st, 0);
 		break;
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		st->param.cmd = MOTIONSENSE_CMD_EC_RATE;
-		st->param.ec_rate.data = val;
-
-		ret = cros_ec_motion_send_host_cmd(st, 0);
-		if (ret)
-			break;
-		st->curr_sampl_freq = val;
-		break;
 	default:
 		ret = -EINVAL;
 		break;
@@ -574,51 +842,24 @@ int cros_ec_sensors_core_write(struct cros_ec_sensors_core_state *st,
 }
 EXPORT_SYMBOL_GPL(cros_ec_sensors_core_write);
 
-static int __maybe_unused cros_ec_sensors_prepare(struct device *dev)
+static int __maybe_unused cros_ec_sensors_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
+	int ret = 0;
 
-	if (st->curr_sampl_freq == 0)
-		return 0;
-
-	/*
-	 * If the sensors are sampled at high frequency, we will not be able to
-	 * sleep. Set sampling to a long period if necessary.
-	 */
-	if (st->curr_sampl_freq < CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY) {
+	if (st->range_updated) {
 		mutex_lock(&st->cmd_lock);
-		st->param.cmd = MOTIONSENSE_CMD_EC_RATE;
-		st->param.ec_rate.data = CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY;
-		cros_ec_motion_send_host_cmd(st, 0);
-		mutex_unlock(&st->cmd_lock);
-	}
-	return 0;
-}
-
-static void __maybe_unused cros_ec_sensors_complete(struct device *dev)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct cros_ec_sensors_core_state *st = iio_priv(indio_dev);
-
-	if (st->curr_sampl_freq == 0)
-		return;
-
-	if (st->curr_sampl_freq < CROS_EC_MIN_SUSPEND_SAMPLING_FREQUENCY) {
-		mutex_lock(&st->cmd_lock);
-		st->param.cmd = MOTIONSENSE_CMD_EC_RATE;
-		st->param.ec_rate.data = st->curr_sampl_freq;
-		cros_ec_motion_send_host_cmd(st, 0);
+		st->param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;
+		st->param.sensor_range.data = st->curr_range;
+		st->param.sensor_range.roundup = 1;
+		ret = cros_ec_motion_send_host_cmd(st, 0);
 		mutex_unlock(&st->cmd_lock);
 	}
+	return ret;
 }
 
-const struct dev_pm_ops cros_ec_sensors_pm_ops = {
-#ifdef CONFIG_PM_SLEEP
-	.prepare = cros_ec_sensors_prepare,
-	.complete = cros_ec_sensors_complete
-#endif
-};
+SIMPLE_DEV_PM_OPS(cros_ec_sensors_pm_ops, NULL, cros_ec_sensors_resume);
 EXPORT_SYMBOL_GPL(cros_ec_sensors_pm_ops);
 
 MODULE_DESCRIPTION("ChromeOS EC sensor hub core functions");
diff --git a/drivers/iio/common/hid-sensors/Kconfig b/drivers/iio/common/hid-sensors/Kconfig
index 24d492567336..2a3dd3b907be 100644
--- a/drivers/iio/common/hid-sensors/Kconfig
+++ b/drivers/iio/common/hid-sensors/Kconfig
@@ -19,6 +19,7 @@ config HID_SENSOR_IIO_TRIGGER
 	tristate "Common module (trigger) for all HID Sensor IIO drivers"
 	depends on HID_SENSOR_HUB && HID_SENSOR_IIO_COMMON && IIO_BUFFER
 	select IIO_TRIGGER
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build trigger support for HID sensors.
 	  Triggers will be send if all requested attributes were read.
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
index 442ff787f7af..9b279937a24e 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-attributes.c
@@ -3,20 +3,13 @@
  * HID Sensors Driver
  * Copyright (c) 2012, Intel Corporation.
  */
-#include <linux/device.h>
-#include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
 #include <linux/kernel.h>
-#include <linux/slab.h>
 #include <linux/time.h>
+#include <linux/units.h>
 
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-#define HZ_PER_MHZ	1000000L
 
 static struct {
 	u32 usage_id;
@@ -71,6 +64,8 @@ static struct {
 	{HID_USAGE_SENSOR_TEMPERATURE, HID_USAGE_SENSOR_UNITS_DEGREES, 1000, 0},
 
 	{HID_USAGE_SENSOR_HUMIDITY, 0, 1000, 0},
+	{HID_USAGE_SENSOR_HINGE, 0, 0, 17453293},
+	{HID_USAGE_SENSOR_HINGE, HID_USAGE_SENSOR_UNITS_DEGREES, 0, 17453293},
 };
 
 static void simple_div(int dividend, int divisor, int *whole,
@@ -174,7 +169,7 @@ s32 hid_sensor_read_poll_value(struct hid_sensor_common *st)
 
 	return value;
 }
-EXPORT_SYMBOL(hid_sensor_read_poll_value);
+EXPORT_SYMBOL_NS(hid_sensor_read_poll_value, IIO_HID_ATTRIBUTES);
 
 int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st,
 				int *val1, int *val2)
@@ -201,7 +196,7 @@ int hid_sensor_read_samp_freq_value(struct hid_sensor_common *st,
 
 	return IIO_VAL_INT_PLUS_MICRO;
 }
-EXPORT_SYMBOL(hid_sensor_read_samp_freq_value);
+EXPORT_SYMBOL_NS(hid_sensor_read_samp_freq_value, IIO_HID);
 
 int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st,
 				int val1, int val2)
@@ -236,7 +231,7 @@ int hid_sensor_write_samp_freq_value(struct hid_sensor_common *st,
 
 	return 0;
 }
-EXPORT_SYMBOL(hid_sensor_write_samp_freq_value);
+EXPORT_SYMBOL_NS(hid_sensor_write_samp_freq_value, IIO_HID);
 
 int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st,
 				int *val1, int *val2)
@@ -259,7 +254,30 @@ int hid_sensor_read_raw_hyst_value(struct hid_sensor_common *st,
 
 	return IIO_VAL_INT_PLUS_MICRO;
 }
-EXPORT_SYMBOL(hid_sensor_read_raw_hyst_value);
+EXPORT_SYMBOL_NS(hid_sensor_read_raw_hyst_value, IIO_HID);
+
+int hid_sensor_read_raw_hyst_rel_value(struct hid_sensor_common *st, int *val1,
+				       int *val2)
+{
+	s32 value;
+	int ret;
+
+	ret = sensor_hub_get_feature(st->hsdev,
+				     st->sensitivity_rel.report_id,
+				     st->sensitivity_rel.index, sizeof(value),
+				     &value);
+	if (ret < 0 || value < 0) {
+		*val1 = *val2 = 0;
+		return -EINVAL;
+	}
+
+	convert_from_vtf_format(value, st->sensitivity_rel.size,
+				st->sensitivity_rel.unit_expo, val1, val2);
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+EXPORT_SYMBOL_NS(hid_sensor_read_raw_hyst_rel_value, IIO_HID);
+
 
 int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st,
 					int val1, int val2)
@@ -290,7 +308,38 @@ int hid_sensor_write_raw_hyst_value(struct hid_sensor_common *st,
 
 	return 0;
 }
-EXPORT_SYMBOL(hid_sensor_write_raw_hyst_value);
+EXPORT_SYMBOL_NS(hid_sensor_write_raw_hyst_value, IIO_HID);
+
+int hid_sensor_write_raw_hyst_rel_value(struct hid_sensor_common *st,
+					int val1, int val2)
+{
+	s32 value;
+	int ret;
+
+	if (val1 < 0 || val2 < 0)
+		return -EINVAL;
+
+	value = convert_to_vtf_format(st->sensitivity_rel.size,
+				st->sensitivity_rel.unit_expo,
+				val1, val2);
+	ret = sensor_hub_set_feature(st->hsdev, st->sensitivity_rel.report_id,
+				     st->sensitivity_rel.index, sizeof(value),
+				     &value);
+	if (ret < 0 || value < 0)
+		return -EINVAL;
+
+	ret = sensor_hub_get_feature(st->hsdev,
+				     st->sensitivity_rel.report_id,
+				     st->sensitivity_rel.index, sizeof(value),
+				     &value);
+	if (ret < 0 || value < 0)
+		return -EINVAL;
+
+	st->raw_hystersis = value;
+
+	return 0;
+}
+EXPORT_SYMBOL_NS(hid_sensor_write_raw_hyst_rel_value, IIO_HID);
 
 /*
  * This fuction applies the unit exponent to the scale.
@@ -374,14 +423,14 @@ int hid_sensor_format_scale(u32 usage_id,
 
 	return IIO_VAL_INT_PLUS_NANO;
 }
-EXPORT_SYMBOL(hid_sensor_format_scale);
+EXPORT_SYMBOL_NS(hid_sensor_format_scale, IIO_HID);
 
 int64_t hid_sensor_convert_timestamp(struct hid_sensor_common *st,
 				     int64_t raw_value)
 {
 	return st->timestamp_ns_scale * raw_value;
 }
-EXPORT_SYMBOL(hid_sensor_convert_timestamp);
+EXPORT_SYMBOL_NS(hid_sensor_convert_timestamp, IIO_HID);
 
 static
 int hid_sensor_get_reporting_interval(struct hid_sensor_hub_device *hsdev,
@@ -428,7 +477,7 @@ int hid_sensor_get_report_latency(struct hid_sensor_common *st)
 
 	return value;
 }
-EXPORT_SYMBOL(hid_sensor_get_report_latency);
+EXPORT_SYMBOL_NS(hid_sensor_get_report_latency, IIO_HID_ATTRIBUTES);
 
 int hid_sensor_set_report_latency(struct hid_sensor_common *st, int latency_ms)
 {
@@ -436,22 +485,25 @@ int hid_sensor_set_report_latency(struct hid_sensor_common *st, int latency_ms)
 				      st->report_latency.index,
 				      sizeof(latency_ms), &latency_ms);
 }
-EXPORT_SYMBOL(hid_sensor_set_report_latency);
+EXPORT_SYMBOL_NS(hid_sensor_set_report_latency, IIO_HID_ATTRIBUTES);
 
 bool hid_sensor_batch_mode_supported(struct hid_sensor_common *st)
 {
 	return st->report_latency.index > 0 && st->report_latency.report_id > 0;
 }
-EXPORT_SYMBOL(hid_sensor_batch_mode_supported);
+EXPORT_SYMBOL_NS(hid_sensor_batch_mode_supported, IIO_HID_ATTRIBUTES);
 
 int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
 					u32 usage_id,
-					struct hid_sensor_common *st)
+					struct hid_sensor_common *st,
+					const u32 *sensitivity_addresses,
+					u32 sensitivity_addresses_len)
 {
 
 	struct hid_sensor_hub_attribute_info timestamp;
 	s32 value;
 	int ret;
+	int i;
 
 	hid_sensor_get_reporting_interval(hsdev, usage_id, st);
 
@@ -473,6 +525,30 @@ int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
 			HID_USAGE_SENSOR_PROP_SENSITIVITY_ABS,
 			 &st->sensitivity);
 
+	sensor_hub_input_get_attribute_info(hsdev,
+			HID_FEATURE_REPORT, usage_id,
+			HID_USAGE_SENSOR_PROP_SENSITIVITY_REL_PCT,
+			&st->sensitivity_rel);
+	/*
+	 * Set Sensitivity field ids, when there is no individual modifier, will
+	 * check absolute sensitivity and relative sensitivity of data field
+	 */
+	for (i = 0; i < sensitivity_addresses_len; i++) {
+		if (st->sensitivity.index < 0)
+			sensor_hub_input_get_attribute_info(
+				hsdev, HID_FEATURE_REPORT, usage_id,
+				HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
+					sensitivity_addresses[i],
+				&st->sensitivity);
+
+		if (st->sensitivity_rel.index < 0)
+			sensor_hub_input_get_attribute_info(
+				hsdev, HID_FEATURE_REPORT, usage_id,
+				HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_REL_PCT |
+					sensitivity_addresses[i],
+				&st->sensitivity_rel);
+	}
+
 	st->raw_hystersis = -1;
 
 	sensor_hub_input_get_attribute_info(hsdev,
@@ -507,7 +583,7 @@ int hid_sensor_parse_common_attributes(struct hid_sensor_hub_device *hsdev,
 
 	return 0;
 }
-EXPORT_SYMBOL(hid_sensor_parse_common_attributes);
+EXPORT_SYMBOL_NS(hid_sensor_parse_common_attributes, IIO_HID);
 
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 MODULE_DESCRIPTION("HID Sensor common attribute processing");
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
index 906d87780419..1151434038d4 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.c
@@ -6,14 +6,13 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
+#include <linux/workqueue.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/trigger.h>
-#include <linux/iio/buffer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
 #include <linux/iio/sysfs.h>
 #include "hid-sensor-trigger.h"
 
@@ -82,15 +81,6 @@ static const struct attribute *hid_sensor_fifo_attributes[] = {
 	NULL,
 };
 
-static void hid_sensor_setup_batch_mode(struct iio_dev *indio_dev,
-					struct hid_sensor_common *st)
-{
-	if (!hid_sensor_batch_mode_supported(st))
-		return;
-
-	iio_buffer_set_attrs(indio_dev->buffer, hid_sensor_fifo_attributes);
-}
-
 static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
 {
 	int state_val;
@@ -157,7 +147,7 @@ static int _hid_sensor_power_state(struct hid_sensor_common *st, bool state)
 
 	return 0;
 }
-EXPORT_SYMBOL(hid_sensor_power_state);
+EXPORT_SYMBOL_NS(hid_sensor_power_state, IIO_HID);
 
 int hid_sensor_power_state(struct hid_sensor_common *st, bool state)
 {
@@ -170,18 +160,15 @@ int hid_sensor_power_state(struct hid_sensor_common *st, bool state)
 
 	if (state) {
 		atomic_inc(&st->user_requested_state);
-		ret = pm_runtime_get_sync(&st->pdev->dev);
+		ret = pm_runtime_resume_and_get(&st->pdev->dev);
 	} else {
 		atomic_dec(&st->user_requested_state);
 		pm_runtime_mark_last_busy(&st->pdev->dev);
 		pm_runtime_use_autosuspend(&st->pdev->dev);
 		ret = pm_runtime_put_autosuspend(&st->pdev->dev);
 	}
-	if (ret < 0) {
-		if (state)
-			pm_runtime_put_noidle(&st->pdev->dev);
+	if (ret < 0)
 		return ret;
-	}
 
 	return 0;
 #else
@@ -222,19 +209,20 @@ static int hid_sensor_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return hid_sensor_power_state(iio_trigger_get_drvdata(trig), state);
 }
 
-void hid_sensor_remove_trigger(struct hid_sensor_common *attrb)
+void hid_sensor_remove_trigger(struct iio_dev *indio_dev,
+			       struct hid_sensor_common *attrb)
 {
 	if (atomic_read(&attrb->runtime_pm_enable))
 		pm_runtime_disable(&attrb->pdev->dev);
 
 	pm_runtime_set_suspended(&attrb->pdev->dev);
-	pm_runtime_put_noidle(&attrb->pdev->dev);
 
 	cancel_work_sync(&attrb->work);
 	iio_trigger_unregister(attrb->trigger);
 	iio_trigger_free(attrb->trigger);
+	iio_triggered_buffer_cleanup(indio_dev);
 }
-EXPORT_SYMBOL(hid_sensor_remove_trigger);
+EXPORT_SYMBOL_NS(hid_sensor_remove_trigger, IIO_HID);
 
 static const struct iio_trigger_ops hid_sensor_trigger_ops = {
 	.set_trigger_state = &hid_sensor_data_rdy_trigger_set_state,
@@ -243,17 +231,32 @@ static const struct iio_trigger_ops hid_sensor_trigger_ops = {
 int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
 				struct hid_sensor_common *attrb)
 {
+	const struct attribute **fifo_attrs;
 	int ret;
 	struct iio_trigger *trig;
 
-	trig = iio_trigger_alloc("%s-dev%d", name, indio_dev->id);
+	if (hid_sensor_batch_mode_supported(attrb))
+		fifo_attrs = hid_sensor_fifo_attributes;
+	else
+		fifo_attrs = NULL;
+
+	ret = iio_triggered_buffer_setup_ext(indio_dev,
+					     &iio_pollfunc_store_time, NULL,
+					     IIO_BUFFER_DIRECTION_IN,
+					     NULL, fifo_attrs);
+	if (ret) {
+		dev_err(&indio_dev->dev, "Triggered Buffer Setup Failed\n");
+		return ret;
+	}
+
+	trig = iio_trigger_alloc(indio_dev->dev.parent,
+				 "%s-dev%d", name, iio_device_id(indio_dev));
 	if (trig == NULL) {
 		dev_err(&indio_dev->dev, "Trigger Allocate Failed\n");
 		ret = -ENOMEM;
-		goto error_ret;
+		goto error_triggered_buffer_cleanup;
 	}
 
-	trig->dev.parent = indio_dev->dev.parent;
 	iio_trigger_set_drvdata(trig, attrb);
 	trig->ops = &hid_sensor_trigger_ops;
 	ret = iio_trigger_register(trig);
@@ -265,8 +268,6 @@ int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
 	attrb->trigger = trig;
 	indio_dev->trig = iio_trigger_get(trig);
 
-	hid_sensor_setup_batch_mode(indio_dev, attrb);
-
 	ret = pm_runtime_set_active(&indio_dev->dev);
 	if (ret)
 		goto error_unreg_trigger;
@@ -284,10 +285,11 @@ error_unreg_trigger:
 	iio_trigger_unregister(trig);
 error_free_trig:
 	iio_trigger_free(trig);
-error_ret:
+error_triggered_buffer_cleanup:
+	iio_triggered_buffer_cleanup(indio_dev);
 	return ret;
 }
-EXPORT_SYMBOL(hid_sensor_setup_trigger);
+EXPORT_SYMBOL_NS(hid_sensor_setup_trigger, IIO_HID);
 
 static int __maybe_unused hid_sensor_suspend(struct device *dev)
 {
@@ -317,8 +319,9 @@ const struct dev_pm_ops hid_sensor_pm_ops = {
 	SET_RUNTIME_PM_OPS(hid_sensor_suspend,
 			   hid_sensor_runtime_resume, NULL)
 };
-EXPORT_SYMBOL(hid_sensor_pm_ops);
+EXPORT_SYMBOL_NS(hid_sensor_pm_ops, IIO_HID);
 
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 MODULE_DESCRIPTION("HID Sensor trigger processing");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID_ATTRIBUTES);
diff --git a/drivers/iio/common/hid-sensors/hid-sensor-trigger.h b/drivers/iio/common/hid-sensors/hid-sensor-trigger.h
index f47b940ff170..f94fca4f1edf 100644
--- a/drivers/iio/common/hid-sensors/hid-sensor-trigger.h
+++ b/drivers/iio/common/hid-sensors/hid-sensor-trigger.h
@@ -9,11 +9,15 @@
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
 
+struct hid_sensor_common;
+struct iio_dev;
+
 extern const struct dev_pm_ops hid_sensor_pm_ops;
 
 int hid_sensor_setup_trigger(struct iio_dev *indio_dev, const char *name,
 				struct hid_sensor_common *attrb);
-void hid_sensor_remove_trigger(struct hid_sensor_common *attrb);
+void hid_sensor_remove_trigger(struct iio_dev *indio_dev,
+			       struct hid_sensor_common *attrb);
 int hid_sensor_power_state(struct hid_sensor_common *st, bool state);
 
 #endif
diff --git a/drivers/iio/common/ms_sensors/ms_sensors_i2c.c b/drivers/iio/common/ms_sensors/ms_sensors_i2c.c
index b52cba1b3c83..6633b35a94e6 100644
--- a/drivers/iio/common/ms_sensors/ms_sensors_i2c.c
+++ b/drivers/iio/common/ms_sensors/ms_sensors_i2c.c
@@ -58,7 +58,7 @@ int ms_sensors_reset(void *cli, u8 cmd, unsigned int delay)
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_reset);
+EXPORT_SYMBOL_NS(ms_sensors_reset, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_read_prom_word() - PROM word read function
@@ -84,7 +84,7 @@ int ms_sensors_read_prom_word(void *cli, int cmd, u16 *word)
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_read_prom_word);
+EXPORT_SYMBOL_NS(ms_sensors_read_prom_word, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_convert_and_read() - ADC conversion & read function
@@ -130,7 +130,7 @@ err:
 	dev_err(&client->dev, "Unable to make sensor adc conversion\n");
 	return ret;
 }
-EXPORT_SYMBOL(ms_sensors_convert_and_read);
+EXPORT_SYMBOL_NS(ms_sensors_convert_and_read, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_crc_valid() - CRC check function
@@ -165,7 +165,7 @@ static bool ms_sensors_crc_valid(u32 value)
 
 /**
  * ms_sensors_read_serial() - Serial number read function
- * @cli:	pointer to i2c client
+ * @client:	pointer to i2c client
  * @sn:		pointer to 64-bits destination value
  *
  * Generic i2c serial number read function for Measurement Specialties devices.
@@ -248,7 +248,7 @@ int ms_sensors_read_serial(struct i2c_client *client, u64 *sn)
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_read_serial);
+EXPORT_SYMBOL_NS(ms_sensors_read_serial, IIO_MEAS_SPEC_SENSORS);
 
 static int ms_sensors_read_config_reg(struct i2c_client *client,
 				      u8 *config_reg)
@@ -299,7 +299,7 @@ ssize_t ms_sensors_write_resolution(struct ms_ht_dev *dev_data,
 					 MS_SENSORS_CONFIG_REG_WRITE,
 					 config_reg);
 }
-EXPORT_SYMBOL(ms_sensors_write_resolution);
+EXPORT_SYMBOL_NS(ms_sensors_write_resolution, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_show_battery_low() - Show device battery low indicator
@@ -324,9 +324,9 @@ ssize_t ms_sensors_show_battery_low(struct ms_ht_dev *dev_data,
 	if (ret)
 		return ret;
 
-	return sprintf(buf, "%d\n", (config_reg & 0x40) >> 6);
+	return sysfs_emit(buf, "%d\n", (config_reg & 0x40) >> 6);
 }
-EXPORT_SYMBOL(ms_sensors_show_battery_low);
+EXPORT_SYMBOL_NS(ms_sensors_show_battery_low, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_show_heater() - Show device heater
@@ -351,9 +351,9 @@ ssize_t ms_sensors_show_heater(struct ms_ht_dev *dev_data,
 	if (ret)
 		return ret;
 
-	return sprintf(buf, "%d\n", (config_reg & 0x4) >> 2);
+	return sysfs_emit(buf, "%d\n", (config_reg & 0x4) >> 2);
 }
-EXPORT_SYMBOL(ms_sensors_show_heater);
+EXPORT_SYMBOL_NS(ms_sensors_show_heater, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_write_heater() - Write device heater
@@ -401,7 +401,7 @@ ssize_t ms_sensors_write_heater(struct ms_ht_dev *dev_data,
 
 	return len;
 }
-EXPORT_SYMBOL(ms_sensors_write_heater);
+EXPORT_SYMBOL_NS(ms_sensors_write_heater, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_ht_read_temperature() - Read temperature
@@ -442,7 +442,7 @@ int ms_sensors_ht_read_temperature(struct ms_ht_dev *dev_data,
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_ht_read_temperature);
+EXPORT_SYMBOL_NS(ms_sensors_ht_read_temperature, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_ht_read_humidity() - Read humidity
@@ -485,27 +485,23 @@ int ms_sensors_ht_read_humidity(struct ms_ht_dev *dev_data,
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_ht_read_humidity);
+EXPORT_SYMBOL_NS(ms_sensors_ht_read_humidity, IIO_MEAS_SPEC_SENSORS);
 
 /**
- * ms_sensors_tp_crc_valid() - CRC check function for
+ * ms_sensors_tp_crc4() - Calculate PROM CRC for
  *     Temperature and pressure devices.
  *     This function is only used when reading PROM coefficients
  *
  * @prom:	pointer to PROM coefficients array
- * @len:	length of PROM coefficients array
  *
- * Return: True if CRC is ok.
+ * Return: CRC.
  */
-static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len)
+static u8 ms_sensors_tp_crc4(u16 *prom)
 {
 	unsigned int cnt, n_bit;
-	u16 n_rem = 0x0000, crc_read = prom[0], crc = (*prom & 0xF000) >> 12;
-
-	prom[len - 1] = 0;
-	prom[0] &= 0x0FFF;      /* Clear the CRC computation part */
+	u16 n_rem = 0x0000;
 
-	for (cnt = 0; cnt < len * 2; cnt++) {
+	for (cnt = 0; cnt < MS_SENSORS_TP_PROM_WORDS_NB * 2; cnt++) {
 		if (cnt % 2 == 1)
 			n_rem ^= prom[cnt >> 1] & 0x00FF;
 		else
@@ -518,10 +514,55 @@ static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len)
 				n_rem <<= 1;
 		}
 	}
-	n_rem >>= 12;
-	prom[0] = crc_read;
 
-	return n_rem == crc;
+	return n_rem >> 12;
+}
+
+/**
+ * ms_sensors_tp_crc_valid_112() - CRC check function for
+ *     Temperature and pressure devices for 112bit PROM.
+ *     This function is only used when reading PROM coefficients
+ *
+ * @prom:	pointer to PROM coefficients array
+ *
+ * Return: True if CRC is ok.
+ */
+static bool ms_sensors_tp_crc_valid_112(u16 *prom)
+{
+	u16 w0 = prom[0], crc_read = (w0 & 0xF000) >> 12;
+	u8 crc;
+
+	prom[0] &= 0x0FFF;      /* Clear the CRC computation part */
+	prom[MS_SENSORS_TP_PROM_WORDS_NB - 1] = 0;
+
+	crc = ms_sensors_tp_crc4(prom);
+
+	prom[0] = w0;
+
+	return crc == crc_read;
+}
+
+/**
+ * ms_sensors_tp_crc_valid_128() - CRC check function for
+ *     Temperature and pressure devices for 128bit PROM.
+ *     This function is only used when reading PROM coefficients
+ *
+ * @prom:	pointer to PROM coefficients array
+ *
+ * Return: True if CRC is ok.
+ */
+static bool ms_sensors_tp_crc_valid_128(u16 *prom)
+{
+	u16 w7 = prom[7], crc_read = w7 & 0x000F;
+	u8 crc;
+
+	prom[7] &= 0xFF00;      /* Clear the CRC and LSB part */
+
+	crc = ms_sensors_tp_crc4(prom);
+
+	prom[7] = w7;
+
+	return crc == crc_read;
 }
 
 /**
@@ -536,8 +577,9 @@ static bool ms_sensors_tp_crc_valid(u16 *prom, u8 len)
 int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data)
 {
 	int i, ret;
+	bool valid;
 
-	for (i = 0; i < MS_SENSORS_TP_PROM_WORDS_NB; i++) {
+	for (i = 0; i < dev_data->hw->prom_len; i++) {
 		ret = ms_sensors_read_prom_word(
 			dev_data->client,
 			MS_SENSORS_TP_PROM_READ + (i << 1),
@@ -547,8 +589,12 @@ int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data)
 			return ret;
 	}
 
-	if (!ms_sensors_tp_crc_valid(dev_data->prom,
-				     MS_SENSORS_TP_PROM_WORDS_NB + 1)) {
+	if (dev_data->hw->prom_len == 8)
+		valid = ms_sensors_tp_crc_valid_128(dev_data->prom);
+	else
+		valid = ms_sensors_tp_crc_valid_112(dev_data->prom);
+
+	if (!valid) {
 		dev_err(&dev_data->client->dev,
 			"Calibration coefficients crc check error\n");
 		return -ENODEV;
@@ -556,7 +602,7 @@ int ms_sensors_tp_read_prom(struct ms_tp_dev *dev_data)
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_tp_read_prom);
+EXPORT_SYMBOL_NS(ms_sensors_tp_read_prom, IIO_MEAS_SPEC_SENSORS);
 
 /**
  * ms_sensors_read_temp_and_pressure() - read temp and pressure
@@ -642,7 +688,7 @@ int ms_sensors_read_temp_and_pressure(struct ms_tp_dev *dev_data,
 
 	return 0;
 }
-EXPORT_SYMBOL(ms_sensors_read_temp_and_pressure);
+EXPORT_SYMBOL_NS(ms_sensors_read_temp_and_pressure, IIO_MEAS_SPEC_SENSORS);
 
 MODULE_DESCRIPTION("Measurement-Specialties common i2c driver");
 MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
diff --git a/drivers/iio/common/ms_sensors/ms_sensors_i2c.h b/drivers/iio/common/ms_sensors/ms_sensors_i2c.h
index bad09c80e47a..f15b973f27c6 100644
--- a/drivers/iio/common/ms_sensors/ms_sensors_i2c.h
+++ b/drivers/iio/common/ms_sensors/ms_sensors_i2c.h
@@ -11,7 +11,7 @@
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 
-#define MS_SENSORS_TP_PROM_WORDS_NB		7
+#define MS_SENSORS_TP_PROM_WORDS_NB		8
 
 /**
  * struct ms_ht_dev - Humidity/Temperature sensor device structure
@@ -26,6 +26,16 @@ struct ms_ht_dev {
 };
 
 /**
+ * struct ms_hw_data - Temperature/Pressure sensor hardware data
+ * @prom_len:		number of words in the PROM
+ * @max_res_index:	maximum sensor resolution index
+ */
+struct ms_tp_hw_data {
+	u8 prom_len;
+	u8 max_res_index;
+};
+
+/**
  * struct ms_tp_dev - Temperature/Pressure sensor device structure
  * @client:	i2c client
  * @lock:	lock protecting the i2c conversion
@@ -36,7 +46,8 @@ struct ms_ht_dev {
 struct ms_tp_dev {
 	struct i2c_client *client;
 	struct mutex lock;
-	u16 prom[MS_SENSORS_TP_PROM_WORDS_NB + 1];
+	const struct ms_tp_hw_data *hw;
+	u16 prom[MS_SENSORS_TP_PROM_WORDS_NB];
 	u8 res_index;
 };
 
diff --git a/drivers/iio/common/scmi_sensors/Kconfig b/drivers/iio/common/scmi_sensors/Kconfig
new file mode 100644
index 000000000000..67e084cbb1ab
--- /dev/null
+++ b/drivers/iio/common/scmi_sensors/Kconfig
@@ -0,0 +1,18 @@
+#
+# IIO over SCMI
+#
+# When adding new entries keep the list in alphabetical order
+
+menu "IIO SCMI Sensors"
+
+config IIO_SCMI
+	tristate "IIO SCMI"
+        depends on ARM_SCMI_PROTOCOL
+        select IIO_BUFFER
+        select IIO_KFIFO_BUF
+	help
+          Say yes here to build support for IIO SCMI Driver.
+          This provides ARM SCMI Protocol based IIO device.
+          This driver provides support for accelerometer and gyroscope
+          sensors available on SCMI based platforms.
+endmenu
diff --git a/drivers/iio/common/scmi_sensors/Makefile b/drivers/iio/common/scmi_sensors/Makefile
new file mode 100644
index 000000000000..645e0fce1a73
--- /dev/null
+++ b/drivers/iio/common/scmi_sensors/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Makefile for the IIO over SCMI
+#
+obj-$(CONFIG_IIO_SCMI) += scmi_iio.o
diff --git a/drivers/iio/common/scmi_sensors/scmi_iio.c b/drivers/iio/common/scmi_sensors/scmi_iio.c
new file mode 100644
index 000000000000..54ccf19ab2bb
--- /dev/null
+++ b/drivers/iio/common/scmi_sensors/scmi_iio.c
@@ -0,0 +1,725 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/*
+ * System Control and Management Interface(SCMI) based IIO sensor driver
+ *
+ * Copyright (C) 2021 Google LLC
+ */
+
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/sysfs.h>
+#include <linux/kernel.h>
+#include <linux/kthread.h>
+#include <linux/module.h>
+#include <linux/scmi_protocol.h>
+#include <linux/time.h>
+#include <linux/types.h>
+#include <linux/units.h>
+
+#define SCMI_IIO_NUM_OF_AXIS 3
+
+struct scmi_iio_priv {
+	const struct scmi_sensor_proto_ops *sensor_ops;
+	struct scmi_protocol_handle *ph;
+	const struct scmi_sensor_info *sensor_info;
+	struct iio_dev *indio_dev;
+	/* adding one additional channel for timestamp */
+	s64 iio_buf[SCMI_IIO_NUM_OF_AXIS + 1];
+	struct notifier_block sensor_update_nb;
+	u32 *freq_avail;
+};
+
+static int scmi_iio_sensor_update_cb(struct notifier_block *nb,
+				     unsigned long event, void *data)
+{
+	struct scmi_sensor_update_report *sensor_update = data;
+	struct iio_dev *scmi_iio_dev;
+	struct scmi_iio_priv *sensor;
+	s8 tstamp_scale;
+	u64 time, time_ns;
+	int i;
+
+	if (sensor_update->readings_count == 0)
+		return NOTIFY_DONE;
+
+	sensor = container_of(nb, struct scmi_iio_priv, sensor_update_nb);
+
+	for (i = 0; i < sensor_update->readings_count; i++)
+		sensor->iio_buf[i] = sensor_update->readings[i].value;
+
+	if (!sensor->sensor_info->timestamped) {
+		time_ns = ktime_to_ns(sensor_update->timestamp);
+	} else {
+		/*
+		 *  All the axes are supposed to have the same value for timestamp.
+		 *  We are just using the values from the Axis 0 here.
+		 */
+		time = sensor_update->readings[0].timestamp;
+
+		/*
+		 *  Timestamp returned by SCMI is in seconds and is equal to
+		 *  time * power-of-10 multiplier(tstamp_scale) seconds.
+		 *  Converting the timestamp to nanoseconds below.
+		 */
+		tstamp_scale = sensor->sensor_info->tstamp_scale +
+			       const_ilog2(NSEC_PER_SEC) / const_ilog2(10);
+		if (tstamp_scale < 0) {
+			do_div(time, int_pow(10, abs(tstamp_scale)));
+			time_ns = time;
+		} else {
+			time_ns = time * int_pow(10, tstamp_scale);
+		}
+	}
+
+	scmi_iio_dev = sensor->indio_dev;
+	iio_push_to_buffers_with_timestamp(scmi_iio_dev, sensor->iio_buf,
+					   time_ns);
+	return NOTIFY_OK;
+}
+
+static int scmi_iio_buffer_preenable(struct iio_dev *iio_dev)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	u32 sensor_config = 0;
+	int err;
+
+	if (sensor->sensor_info->timestamped)
+		sensor_config |= FIELD_PREP(SCMI_SENS_CFG_TSTAMP_ENABLED_MASK,
+					    SCMI_SENS_CFG_TSTAMP_ENABLE);
+
+	sensor_config |= FIELD_PREP(SCMI_SENS_CFG_SENSOR_ENABLED_MASK,
+				    SCMI_SENS_CFG_SENSOR_ENABLE);
+	err = sensor->sensor_ops->config_set(sensor->ph,
+					     sensor->sensor_info->id,
+					     sensor_config);
+	if (err)
+		dev_err(&iio_dev->dev, "Error in enabling sensor %s err %d",
+			sensor->sensor_info->name, err);
+
+	return err;
+}
+
+static int scmi_iio_buffer_postdisable(struct iio_dev *iio_dev)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	u32 sensor_config = 0;
+	int err;
+
+	sensor_config |= FIELD_PREP(SCMI_SENS_CFG_SENSOR_ENABLED_MASK,
+				    SCMI_SENS_CFG_SENSOR_DISABLE);
+	err = sensor->sensor_ops->config_set(sensor->ph,
+					     sensor->sensor_info->id,
+					     sensor_config);
+	if (err) {
+		dev_err(&iio_dev->dev,
+			"Error in disabling sensor %s with err %d",
+			sensor->sensor_info->name, err);
+	}
+
+	return err;
+}
+
+static const struct iio_buffer_setup_ops scmi_iio_buffer_ops = {
+	.preenable = scmi_iio_buffer_preenable,
+	.postdisable = scmi_iio_buffer_postdisable,
+};
+
+static int scmi_iio_set_odr_val(struct iio_dev *iio_dev, int val, int val2)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	u64 sec, mult, uHz, sf;
+	u32 sensor_config;
+	char buf[32];
+
+	int err = sensor->sensor_ops->config_get(sensor->ph,
+						 sensor->sensor_info->id,
+						 &sensor_config);
+	if (err) {
+		dev_err(&iio_dev->dev,
+			"Error in getting sensor config for sensor %s err %d",
+			sensor->sensor_info->name, err);
+		return err;
+	}
+
+	uHz = val * MICROHZ_PER_HZ + val2;
+
+	/*
+	 * The seconds field in the sensor interval in SCMI is 16 bits long
+	 * Therefore seconds  = 1/Hz <= 0xFFFF. As floating point calculations are
+	 * discouraged in the kernel driver code, to calculate the scale factor (sf)
+	 * (1* 1000000 * sf)/uHz <= 0xFFFF. Therefore, sf <= (uHz * 0xFFFF)/1000000
+	 * To calculate the multiplier,we convert the sf into char string  and
+	 * count the number of characters
+	 */
+	sf = (u64)uHz * 0xFFFF;
+	do_div(sf,  MICROHZ_PER_HZ);
+	mult = scnprintf(buf, sizeof(buf), "%llu", sf) - 1;
+
+	sec = int_pow(10, mult) * MICROHZ_PER_HZ;
+	do_div(sec, uHz);
+	if (sec == 0) {
+		dev_err(&iio_dev->dev,
+			"Trying to set invalid sensor update value for sensor %s",
+			sensor->sensor_info->name);
+		return -EINVAL;
+	}
+
+	sensor_config &= ~SCMI_SENS_CFG_UPDATE_SECS_MASK;
+	sensor_config |= FIELD_PREP(SCMI_SENS_CFG_UPDATE_SECS_MASK, sec);
+	sensor_config &= ~SCMI_SENS_CFG_UPDATE_EXP_MASK;
+	sensor_config |= FIELD_PREP(SCMI_SENS_CFG_UPDATE_EXP_MASK, -mult);
+
+	if (sensor->sensor_info->timestamped) {
+		sensor_config &= ~SCMI_SENS_CFG_TSTAMP_ENABLED_MASK;
+		sensor_config |= FIELD_PREP(SCMI_SENS_CFG_TSTAMP_ENABLED_MASK,
+					    SCMI_SENS_CFG_TSTAMP_ENABLE);
+	}
+
+	sensor_config &= ~SCMI_SENS_CFG_ROUND_MASK;
+	sensor_config |=
+		FIELD_PREP(SCMI_SENS_CFG_ROUND_MASK, SCMI_SENS_CFG_ROUND_AUTO);
+
+	err = sensor->sensor_ops->config_set(sensor->ph,
+					     sensor->sensor_info->id,
+					     sensor_config);
+	if (err)
+		dev_err(&iio_dev->dev,
+			"Error in setting sensor update interval for sensor %s value %u err %d",
+			sensor->sensor_info->name, sensor_config, err);
+
+	return err;
+}
+
+static int scmi_iio_write_raw(struct iio_dev *iio_dev,
+			      struct iio_chan_spec const *chan, int val,
+			      int val2, long mask)
+{
+	int err;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		mutex_lock(&iio_dev->mlock);
+		err = scmi_iio_set_odr_val(iio_dev, val, val2);
+		mutex_unlock(&iio_dev->mlock);
+		return err;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int scmi_iio_read_avail(struct iio_dev *iio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = sensor->freq_avail;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = sensor->sensor_info->intervals.count * 2;
+		if (sensor->sensor_info->intervals.segmented)
+			return IIO_AVAIL_RANGE;
+		else
+			return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static void convert_ns_to_freq(u64 interval_ns, u64 *hz, u64 *uhz)
+{
+	u64 rem, freq;
+
+	freq = NSEC_PER_SEC;
+	rem = do_div(freq, interval_ns);
+	*hz = freq;
+	*uhz = rem * 1000000UL;
+	do_div(*uhz, interval_ns);
+}
+
+static int scmi_iio_get_odr_val(struct iio_dev *iio_dev, int *val, int *val2)
+{
+	u64 sensor_update_interval, sensor_interval_mult, hz, uhz;
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	u32 sensor_config;
+	int mult;
+
+	int err = sensor->sensor_ops->config_get(sensor->ph,
+						 sensor->sensor_info->id,
+						 &sensor_config);
+	if (err) {
+		dev_err(&iio_dev->dev,
+			"Error in getting sensor config for sensor %s err %d",
+			sensor->sensor_info->name, err);
+		return err;
+	}
+
+	sensor_update_interval =
+		SCMI_SENS_CFG_GET_UPDATE_SECS(sensor_config) * NSEC_PER_SEC;
+
+	mult = SCMI_SENS_CFG_GET_UPDATE_EXP(sensor_config);
+	if (mult < 0) {
+		sensor_interval_mult = int_pow(10, abs(mult));
+		do_div(sensor_update_interval, sensor_interval_mult);
+	} else {
+		sensor_interval_mult = int_pow(10, mult);
+		sensor_update_interval =
+			sensor_update_interval * sensor_interval_mult;
+	}
+
+	convert_ns_to_freq(sensor_update_interval, &hz, &uhz);
+	*val = hz;
+	*val2 = uhz;
+	return 0;
+}
+
+static int scmi_iio_read_channel_data(struct iio_dev *iio_dev,
+			     struct iio_chan_spec const *ch, int *val, int *val2)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	u32 sensor_config;
+	struct scmi_sensor_reading readings[SCMI_IIO_NUM_OF_AXIS];
+	int err;
+
+	sensor_config = FIELD_PREP(SCMI_SENS_CFG_SENSOR_ENABLED_MASK,
+					SCMI_SENS_CFG_SENSOR_ENABLE);
+	err = sensor->sensor_ops->config_set(
+		sensor->ph, sensor->sensor_info->id, sensor_config);
+	if (err) {
+		dev_err(&iio_dev->dev,
+			"Error in enabling sensor %s err %d",
+			sensor->sensor_info->name, err);
+		return err;
+	}
+
+	err = sensor->sensor_ops->reading_get_timestamped(
+		sensor->ph, sensor->sensor_info->id,
+		sensor->sensor_info->num_axis, readings);
+	if (err) {
+		dev_err(&iio_dev->dev,
+			"Error in reading raw attribute for sensor %s err %d",
+			sensor->sensor_info->name, err);
+		return err;
+	}
+
+	sensor_config = FIELD_PREP(SCMI_SENS_CFG_SENSOR_ENABLED_MASK,
+					SCMI_SENS_CFG_SENSOR_DISABLE);
+	err = sensor->sensor_ops->config_set(
+		sensor->ph, sensor->sensor_info->id, sensor_config);
+	if (err) {
+		dev_err(&iio_dev->dev,
+			"Error in disabling sensor %s err %d",
+			sensor->sensor_info->name, err);
+		return err;
+	}
+
+	*val = lower_32_bits(readings[ch->scan_index].value);
+	*val2 = upper_32_bits(readings[ch->scan_index].value);
+
+	return IIO_VAL_INT_64;
+}
+
+static int scmi_iio_read_raw(struct iio_dev *iio_dev,
+			     struct iio_chan_spec const *ch, int *val,
+			     int *val2, long mask)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	s8 scale;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		scale = sensor->sensor_info->axis[ch->scan_index].scale;
+		if (scale < 0) {
+			*val = 1;
+			*val2 = int_pow(10, abs(scale));
+			return IIO_VAL_FRACTIONAL;
+		}
+		*val = int_pow(10, scale);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = scmi_iio_get_odr_val(iio_dev, val, val2);
+		return ret ? ret : IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(iio_dev);
+		if (ret)
+			return ret;
+
+		ret = scmi_iio_read_channel_data(iio_dev, ch, val, val2);
+		iio_device_release_direct_mode(iio_dev);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info scmi_iio_info = {
+	.read_raw = scmi_iio_read_raw,
+	.read_avail = scmi_iio_read_avail,
+	.write_raw = scmi_iio_write_raw,
+};
+
+static ssize_t scmi_iio_get_raw_available(struct iio_dev *iio_dev,
+					  uintptr_t private,
+					  const struct iio_chan_spec *chan,
+					  char *buf)
+{
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	u64 resolution, rem;
+	s64 min_range, max_range;
+	s8 exponent, scale;
+	int len = 0;
+
+	/*
+	 * All the axes are supposed to have the same value for range and resolution.
+	 * We are just using the values from the Axis 0 here.
+	 */
+	if (sensor->sensor_info->axis[0].extended_attrs) {
+		min_range = sensor->sensor_info->axis[0].attrs.min_range;
+		max_range = sensor->sensor_info->axis[0].attrs.max_range;
+		resolution = sensor->sensor_info->axis[0].resolution;
+		exponent = sensor->sensor_info->axis[0].exponent;
+		scale = sensor->sensor_info->axis[0].scale;
+
+		/*
+		 * To provide the raw value for the resolution to the userspace,
+		 * need to divide the resolution exponent by the sensor scale
+		 */
+		exponent = exponent - scale;
+		if (exponent < 0) {
+			rem = do_div(resolution,
+				     int_pow(10, abs(exponent))
+				     );
+			len = scnprintf(buf, PAGE_SIZE,
+					"[%lld %llu.%llu %lld]\n", min_range,
+					resolution, rem, max_range);
+		} else {
+			resolution = resolution * int_pow(10, exponent);
+			len = scnprintf(buf, PAGE_SIZE, "[%lld %llu %lld]\n",
+					min_range, resolution, max_range);
+		}
+	}
+	return len;
+}
+
+static const struct iio_chan_spec_ext_info scmi_iio_ext_info[] = {
+	{
+		.name = "raw_available",
+		.read = scmi_iio_get_raw_available,
+		.shared = IIO_SHARED_BY_TYPE,
+	},
+	{},
+};
+
+static void scmi_iio_set_timestamp_channel(struct iio_chan_spec *iio_chan,
+					   int scan_index)
+{
+	iio_chan->type = IIO_TIMESTAMP;
+	iio_chan->channel = -1;
+	iio_chan->scan_index = scan_index;
+	iio_chan->scan_type.sign = 'u';
+	iio_chan->scan_type.realbits = 64;
+	iio_chan->scan_type.storagebits = 64;
+}
+
+static void scmi_iio_set_data_channel(struct iio_chan_spec *iio_chan,
+				      enum iio_chan_type type,
+				      enum iio_modifier mod, int scan_index)
+{
+	iio_chan->type = type;
+	iio_chan->modified = 1;
+	iio_chan->channel2 = mod;
+	iio_chan->info_mask_separate =
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_RAW);
+	iio_chan->info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ);
+	iio_chan->info_mask_shared_by_type_available =
+		BIT(IIO_CHAN_INFO_SAMP_FREQ);
+	iio_chan->scan_index = scan_index;
+	iio_chan->scan_type.sign = 's';
+	iio_chan->scan_type.realbits = 64;
+	iio_chan->scan_type.storagebits = 64;
+	iio_chan->scan_type.endianness = IIO_LE;
+	iio_chan->ext_info = scmi_iio_ext_info;
+}
+
+static int scmi_iio_get_chan_modifier(const char *name,
+				      enum iio_modifier *modifier)
+{
+	char *pch, mod;
+
+	if (!name)
+		return -EINVAL;
+
+	pch = strrchr(name, '_');
+	if (!pch)
+		return -EINVAL;
+
+	mod = *(pch + 1);
+	switch (mod) {
+	case 'X':
+		*modifier = IIO_MOD_X;
+		return 0;
+	case 'Y':
+		*modifier = IIO_MOD_Y;
+		return 0;
+	case 'Z':
+		*modifier = IIO_MOD_Z;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int scmi_iio_get_chan_type(u8 scmi_type, enum iio_chan_type *iio_type)
+{
+	switch (scmi_type) {
+	case METERS_SEC_SQUARED:
+		*iio_type = IIO_ACCEL;
+		return 0;
+	case RADIANS_SEC:
+		*iio_type = IIO_ANGL_VEL;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static u64 scmi_iio_convert_interval_to_ns(u32 val)
+{
+	u64 sensor_update_interval =
+		SCMI_SENS_INTVL_GET_SECS(val) * NSEC_PER_SEC;
+	u64 sensor_interval_mult;
+	int mult;
+
+	mult = SCMI_SENS_INTVL_GET_EXP(val);
+	if (mult < 0) {
+		sensor_interval_mult = int_pow(10, abs(mult));
+		do_div(sensor_update_interval, sensor_interval_mult);
+	} else {
+		sensor_interval_mult = int_pow(10, mult);
+		sensor_update_interval =
+			sensor_update_interval * sensor_interval_mult;
+	}
+	return sensor_update_interval;
+}
+
+static int scmi_iio_set_sampling_freq_avail(struct iio_dev *iio_dev)
+{
+	u64 cur_interval_ns, low_interval_ns, high_interval_ns, step_size_ns,
+		hz, uhz;
+	unsigned int cur_interval, low_interval, high_interval, step_size;
+	struct scmi_iio_priv *sensor = iio_priv(iio_dev);
+	int i;
+
+	sensor->freq_avail =
+		devm_kzalloc(&iio_dev->dev,
+			     sizeof(*sensor->freq_avail) *
+				     (sensor->sensor_info->intervals.count * 2),
+			     GFP_KERNEL);
+	if (!sensor->freq_avail)
+		return -ENOMEM;
+
+	if (sensor->sensor_info->intervals.segmented) {
+		low_interval = sensor->sensor_info->intervals
+				       .desc[SCMI_SENS_INTVL_SEGMENT_LOW];
+		low_interval_ns = scmi_iio_convert_interval_to_ns(low_interval);
+		convert_ns_to_freq(low_interval_ns, &hz, &uhz);
+		sensor->freq_avail[0] = hz;
+		sensor->freq_avail[1] = uhz;
+
+		step_size = sensor->sensor_info->intervals
+				    .desc[SCMI_SENS_INTVL_SEGMENT_STEP];
+		step_size_ns = scmi_iio_convert_interval_to_ns(step_size);
+		convert_ns_to_freq(step_size_ns, &hz, &uhz);
+		sensor->freq_avail[2] = hz;
+		sensor->freq_avail[3] = uhz;
+
+		high_interval = sensor->sensor_info->intervals
+					.desc[SCMI_SENS_INTVL_SEGMENT_HIGH];
+		high_interval_ns =
+			scmi_iio_convert_interval_to_ns(high_interval);
+		convert_ns_to_freq(high_interval_ns, &hz, &uhz);
+		sensor->freq_avail[4] = hz;
+		sensor->freq_avail[5] = uhz;
+	} else {
+		for (i = 0; i < sensor->sensor_info->intervals.count; i++) {
+			cur_interval = sensor->sensor_info->intervals.desc[i];
+			cur_interval_ns =
+				scmi_iio_convert_interval_to_ns(cur_interval);
+			convert_ns_to_freq(cur_interval_ns, &hz, &uhz);
+			sensor->freq_avail[i * 2] = hz;
+			sensor->freq_avail[i * 2 + 1] = uhz;
+		}
+	}
+	return 0;
+}
+
+static struct iio_dev *
+scmi_alloc_iiodev(struct scmi_device *sdev,
+		  const struct scmi_sensor_proto_ops *ops,
+		  struct scmi_protocol_handle *ph,
+		  const struct scmi_sensor_info *sensor_info)
+{
+	struct iio_chan_spec *iio_channels;
+	struct scmi_iio_priv *sensor;
+	enum iio_modifier modifier;
+	enum iio_chan_type type;
+	struct iio_dev *iiodev;
+	struct device *dev = &sdev->dev;
+	const struct scmi_handle *handle = sdev->handle;
+	int i, ret;
+
+	iiodev = devm_iio_device_alloc(dev, sizeof(*sensor));
+	if (!iiodev)
+		return ERR_PTR(-ENOMEM);
+
+	iiodev->modes = INDIO_DIRECT_MODE;
+	sensor = iio_priv(iiodev);
+	sensor->sensor_ops = ops;
+	sensor->ph = ph;
+	sensor->sensor_info = sensor_info;
+	sensor->sensor_update_nb.notifier_call = scmi_iio_sensor_update_cb;
+	sensor->indio_dev = iiodev;
+
+	/* adding one additional channel for timestamp */
+	iiodev->num_channels = sensor_info->num_axis + 1;
+	iiodev->name = sensor_info->name;
+	iiodev->info = &scmi_iio_info;
+
+	iio_channels =
+		devm_kzalloc(dev,
+			     sizeof(*iio_channels) * (iiodev->num_channels),
+			     GFP_KERNEL);
+	if (!iio_channels)
+		return ERR_PTR(-ENOMEM);
+
+	ret = scmi_iio_set_sampling_freq_avail(iiodev);
+	if (ret < 0)
+		return ERR_PTR(ret);
+
+	for (i = 0; i < sensor_info->num_axis; i++) {
+		ret = scmi_iio_get_chan_type(sensor_info->axis[i].type, &type);
+		if (ret < 0)
+			return ERR_PTR(ret);
+
+		ret = scmi_iio_get_chan_modifier(sensor_info->axis[i].name,
+						 &modifier);
+		if (ret < 0)
+			return ERR_PTR(ret);
+
+		scmi_iio_set_data_channel(&iio_channels[i], type, modifier,
+					  sensor_info->axis[i].id);
+	}
+
+	ret = handle->notify_ops->devm_event_notifier_register(sdev,
+				SCMI_PROTOCOL_SENSOR, SCMI_EVENT_SENSOR_UPDATE,
+				&sensor->sensor_info->id,
+				&sensor->sensor_update_nb);
+	if (ret) {
+		dev_err(&iiodev->dev,
+			"Error in registering sensor update notifier for sensor %s err %d",
+			sensor->sensor_info->name, ret);
+		return ERR_PTR(ret);
+	}
+
+	scmi_iio_set_timestamp_channel(&iio_channels[i], i);
+	iiodev->channels = iio_channels;
+	return iiodev;
+}
+
+static int scmi_iio_dev_probe(struct scmi_device *sdev)
+{
+	const struct scmi_sensor_info *sensor_info;
+	struct scmi_handle *handle = sdev->handle;
+	const struct scmi_sensor_proto_ops *sensor_ops;
+	struct scmi_protocol_handle *ph;
+	struct device *dev = &sdev->dev;
+	struct iio_dev *scmi_iio_dev;
+	u16 nr_sensors;
+	int err = -ENODEV, i;
+
+	if (!handle)
+		return -ENODEV;
+
+	sensor_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_SENSOR, &ph);
+	if (IS_ERR(sensor_ops)) {
+		dev_err(dev, "SCMI device has no sensor interface\n");
+		return PTR_ERR(sensor_ops);
+	}
+
+	nr_sensors = sensor_ops->count_get(ph);
+	if (!nr_sensors) {
+		dev_dbg(dev, "0 sensors found via SCMI bus\n");
+		return -ENODEV;
+	}
+
+	for (i = 0; i < nr_sensors; i++) {
+		sensor_info = sensor_ops->info_get(ph, i);
+		if (!sensor_info) {
+			dev_err(dev, "SCMI sensor %d has missing info\n", i);
+			return -EINVAL;
+		}
+
+		/* This driver only supports 3-axis accel and gyro, skipping other sensors */
+		if (sensor_info->num_axis != SCMI_IIO_NUM_OF_AXIS)
+			continue;
+
+		/* This driver only supports 3-axis accel and gyro, skipping other sensors */
+		if (sensor_info->axis[0].type != METERS_SEC_SQUARED &&
+		    sensor_info->axis[0].type != RADIANS_SEC)
+			continue;
+
+		scmi_iio_dev = scmi_alloc_iiodev(sdev, sensor_ops, ph,
+						 sensor_info);
+		if (IS_ERR(scmi_iio_dev)) {
+			dev_err(dev,
+				"failed to allocate IIO device for sensor %s: %ld\n",
+				sensor_info->name, PTR_ERR(scmi_iio_dev));
+			return PTR_ERR(scmi_iio_dev);
+		}
+
+		err = devm_iio_kfifo_buffer_setup(&scmi_iio_dev->dev,
+						  scmi_iio_dev,
+						  &scmi_iio_buffer_ops);
+		if (err < 0) {
+			dev_err(dev,
+				"IIO buffer setup error at sensor %s: %d\n",
+				sensor_info->name, err);
+			return err;
+		}
+
+		err = devm_iio_device_register(dev, scmi_iio_dev);
+		if (err) {
+			dev_err(dev,
+				"IIO device registration failed at sensor %s: %d\n",
+				sensor_info->name, err);
+			return err;
+		}
+	}
+	return err;
+}
+
+static const struct scmi_device_id scmi_id_table[] = {
+	{ SCMI_PROTOCOL_SENSOR, "iiodev" },
+	{},
+};
+
+MODULE_DEVICE_TABLE(scmi, scmi_id_table);
+
+static struct scmi_driver scmi_iiodev_driver = {
+	.name = "scmi-sensor-iiodev",
+	.probe = scmi_iio_dev_probe,
+	.id_table = scmi_id_table,
+};
+
+module_scmi_driver(scmi_iiodev_driver);
+
+MODULE_AUTHOR("Jyoti Bhayana <jbhayana@google.com>");
+MODULE_DESCRIPTION("SCMI IIO Driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/common/ssp_sensors/ssp.h b/drivers/iio/common/ssp_sensors/ssp.h
index abb832795619..f649cdecc277 100644
--- a/drivers/iio/common/ssp_sensors/ssp.h
+++ b/drivers/iio/common/ssp_sensors/ssp.h
@@ -221,8 +221,7 @@ struct ssp_data {
 	struct iio_dev *sensor_devs[SSP_SENSOR_MAX];
 	atomic_t enable_refcount;
 
-	__le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)]
-		____cacheline_aligned;
+	__le16 header_buffer[SSP_HEADER_BUFFER_SIZE / sizeof(__le16)] __aligned(IIO_DMA_MINALIGN);
 };
 
 void ssp_clean_pending_list(struct ssp_data *data);
diff --git a/drivers/iio/common/ssp_sensors/ssp_dev.c b/drivers/iio/common/ssp_sensors/ssp_dev.c
index a94dbcf491ce..e64d242145e0 100644
--- a/drivers/iio/common/ssp_sensors/ssp_dev.c
+++ b/drivers/iio/common/ssp_sensors/ssp_dev.c
@@ -7,9 +7,10 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/mfd/core.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_platform.h>
+#include <linux/property.h>
+
 #include "ssp.h"
 
 #define SSP_WDT_TIME			10000
@@ -204,7 +205,7 @@ u32 ssp_get_sensor_delay(struct ssp_data *data, enum ssp_sensor_type type)
 {
 	return data->delay_buf[type];
 }
-EXPORT_SYMBOL(ssp_get_sensor_delay);
+EXPORT_SYMBOL_NS(ssp_get_sensor_delay, IIO_SSP_SENSORS);
 
 /**
  * ssp_enable_sensor() - enables data acquisition for sensor
@@ -266,7 +267,7 @@ int ssp_enable_sensor(struct ssp_data *data, enum ssp_sensor_type type,
 derror:
 	return ret;
 }
-EXPORT_SYMBOL(ssp_enable_sensor);
+EXPORT_SYMBOL_NS(ssp_enable_sensor, IIO_SSP_SENSORS);
 
 /**
  * ssp_change_delay() - changes data acquisition for sensor
@@ -297,7 +298,7 @@ int ssp_change_delay(struct ssp_data *data, enum ssp_sensor_type type,
 
 	return 0;
 }
-EXPORT_SYMBOL(ssp_change_delay);
+EXPORT_SYMBOL_NS(ssp_change_delay, IIO_SSP_SENSORS);
 
 /**
  * ssp_disable_sensor() - disables sensor
@@ -334,7 +335,7 @@ int ssp_disable_sensor(struct ssp_data *data, enum ssp_sensor_type type)
 
 	return 0;
 }
-EXPORT_SYMBOL(ssp_disable_sensor);
+EXPORT_SYMBOL_NS(ssp_disable_sensor, IIO_SSP_SENSORS);
 
 static irqreturn_t ssp_irq_thread_fn(int irq, void *dev_id)
 {
@@ -425,7 +426,6 @@ int ssp_queue_ssp_refresh_task(struct ssp_data *data, unsigned int delay)
 				  msecs_to_jiffies(delay));
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id ssp_of_match[] = {
 	{
 		.compatible	= "samsung,sensorhub-rinato",
@@ -441,8 +441,6 @@ MODULE_DEVICE_TABLE(of, ssp_of_match);
 static struct ssp_data *ssp_parse_dt(struct device *dev)
 {
 	struct ssp_data *data;
-	struct device_node *node = dev->of_node;
-	const struct of_device_id *match;
 
 	data = devm_kzalloc(dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
@@ -461,22 +459,12 @@ static struct ssp_data *ssp_parse_dt(struct device *dev)
 	if (IS_ERR(data->mcu_reset_gpiod))
 		return NULL;
 
-	match = of_match_node(ssp_of_match, node);
-	if (!match)
-		return NULL;
-
-	data->sensorhub_info = match->data;
+	data->sensorhub_info = device_get_match_data(dev);
 
 	dev_set_drvdata(dev, data);
 
 	return data;
 }
-#else
-static struct ssp_data *ssp_parse_dt(struct device *pdev)
-{
-	return NULL;
-}
-#endif
 
 /**
  * ssp_register_consumer() - registers iio consumer in ssp framework
@@ -490,7 +478,7 @@ void ssp_register_consumer(struct iio_dev *indio_dev, enum ssp_sensor_type type)
 
 	data->sensor_devs[type] = indio_dev;
 }
-EXPORT_SYMBOL(ssp_register_consumer);
+EXPORT_SYMBOL_NS(ssp_register_consumer, IIO_SSP_SENSORS);
 
 static int ssp_probe(struct spi_device *spi)
 {
@@ -503,7 +491,8 @@ static int ssp_probe(struct spi_device *spi)
 		return -ENODEV;
 	}
 
-	ret = mfd_add_devices(&spi->dev, -1, sensorhub_sensor_devs,
+	ret = mfd_add_devices(&spi->dev, PLATFORM_DEVID_NONE,
+			      sensorhub_sensor_devs,
 			      ARRAY_SIZE(sensorhub_sensor_devs), NULL, 0, NULL);
 	if (ret < 0) {
 		dev_err(&spi->dev, "mfd add devices fail\n");
@@ -585,7 +574,7 @@ err_setup_irq:
 	return ret;
 }
 
-static int ssp_remove(struct spi_device *spi)
+static void ssp_remove(struct spi_device *spi)
 {
 	struct ssp_data *data = spi_get_drvdata(spi);
 
@@ -607,11 +596,8 @@ static int ssp_remove(struct spi_device *spi)
 	mutex_destroy(&data->pending_lock);
 
 	mfd_remove_devices(&spi->dev);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int ssp_suspend(struct device *dev)
 {
 	int ret;
@@ -660,18 +646,15 @@ static int ssp_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM_SLEEP */
 
-static const struct dev_pm_ops ssp_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(ssp_suspend, ssp_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(ssp_pm_ops, ssp_suspend, ssp_resume);
 
 static struct spi_driver ssp_driver = {
 	.probe = ssp_probe,
 	.remove = ssp_remove,
 	.driver = {
-		.pm = &ssp_pm_ops,
-		.of_match_table = of_match_ptr(ssp_of_match),
+		.pm = pm_sleep_ptr(&ssp_pm_ops),
+		.of_match_table = ssp_of_match,
 		.name = "sensorhub"
 	},
 };
diff --git a/drivers/iio/common/ssp_sensors/ssp_iio.c b/drivers/iio/common/ssp_sensors/ssp_iio.c
index 5336db81ba0a..88b8b56bfa51 100644
--- a/drivers/iio/common/ssp_sensors/ssp_iio.c
+++ b/drivers/iio/common/ssp_sensors/ssp_iio.c
@@ -32,7 +32,7 @@ int ssp_common_buffer_postenable(struct iio_dev *indio_dev)
 	return ssp_enable_sensor(data, spd->type,
 				 ssp_get_sensor_delay(data, spd->type));
 }
-EXPORT_SYMBOL(ssp_common_buffer_postenable);
+EXPORT_SYMBOL_NS(ssp_common_buffer_postenable, IIO_SSP_SENSORS);
 
 /**
  * ssp_common_buffer_postdisable() - generic postdisable callback for ssp buffer
@@ -55,7 +55,7 @@ int ssp_common_buffer_postdisable(struct iio_dev *indio_dev)
 
 	return ret;
 }
-EXPORT_SYMBOL(ssp_common_buffer_postdisable);
+EXPORT_SYMBOL_NS(ssp_common_buffer_postdisable, IIO_SSP_SENSORS);
 
 /**
  * ssp_common_process_data() - Common process data callback for ssp sensors
@@ -91,8 +91,9 @@ int ssp_common_process_data(struct iio_dev *indio_dev, void *buf,
 	return iio_push_to_buffers_with_timestamp(indio_dev, spd->buffer,
 						  calculated_time);
 }
-EXPORT_SYMBOL(ssp_common_process_data);
+EXPORT_SYMBOL_NS(ssp_common_process_data, IIO_SSP_SENSORS);
 
 MODULE_AUTHOR("Karol Wrona <k.wrona@samsung.com>");
 MODULE_DESCRIPTION("Samsung sensorhub commons");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_SSP_SENSORS);
diff --git a/drivers/iio/common/ssp_sensors/ssp_spi.c b/drivers/iio/common/ssp_sensors/ssp_spi.c
index 4864c38b8d1c..f32b04b63ea1 100644
--- a/drivers/iio/common/ssp_sensors/ssp_spi.c
+++ b/drivers/iio/common/ssp_sensors/ssp_spi.c
@@ -137,7 +137,7 @@ static int ssp_print_mcu_debug(char *data_frame, int *data_index,
 	if (length > received_len - *data_index || length <= 0) {
 		ssp_dbg("[SSP]: MSG From MCU-invalid debug length(%d/%d)\n",
 			length, received_len);
-		return length ? length : -EPROTO;
+		return -EPROTO;
 	}
 
 	ssp_dbg("[SSP]: MSG From MCU - %s\n", &data_frame[*data_index]);
@@ -273,6 +273,8 @@ static int ssp_parse_dataframe(struct ssp_data *data, char *dataframe, int len)
 	for (idx = 0; idx < len;) {
 		switch (dataframe[idx++]) {
 		case SSP_MSG2AP_INST_BYPASS_DATA:
+			if (idx >= len)
+				return -EPROTO;
 			sd = dataframe[idx++];
 			if (sd < 0 || sd >= SSP_SENSOR_MAX) {
 				dev_err(SSP_DEV,
@@ -282,10 +284,13 @@ static int ssp_parse_dataframe(struct ssp_data *data, char *dataframe, int len)
 
 			if (indio_devs[sd]) {
 				spd = iio_priv(indio_devs[sd]);
-				if (spd->process_data)
+				if (spd->process_data) {
+					if (idx >= len)
+						return -EPROTO;
 					spd->process_data(indio_devs[sd],
 							  &dataframe[idx],
 							  data->timestamp);
+				}
 			} else {
 				dev_err(SSP_DEV, "no client for frame\n");
 			}
@@ -293,6 +298,8 @@ static int ssp_parse_dataframe(struct ssp_data *data, char *dataframe, int len)
 			idx += ssp_offset_map[sd];
 			break;
 		case SSP_MSG2AP_INST_DEBUG_DATA:
+			if (idx >= len)
+				return -EPROTO;
 			sd = ssp_print_mcu_debug(dataframe, &idx, len);
 			if (sd) {
 				dev_err(SSP_DEV,
@@ -324,12 +331,11 @@ static int ssp_parse_dataframe(struct ssp_data *data, char *dataframe, int len)
 /* threaded irq */
 int ssp_irq_msg(struct ssp_data *data)
 {
-	bool found = false;
 	char *buffer;
 	u8 msg_type;
 	int ret;
 	u16 length, msg_options;
-	struct ssp_msg *msg, *n;
+	struct ssp_msg *msg = NULL, *iter, *n;
 
 	ret = spi_read(data->spi, data->header_buffer, SSP_HEADER_BUFFER_SIZE);
 	if (ret < 0) {
@@ -355,15 +361,15 @@ int ssp_irq_msg(struct ssp_data *data)
 		 * received with no order
 		 */
 		mutex_lock(&data->pending_lock);
-		list_for_each_entry_safe(msg, n, &data->pending_list, list) {
-			if (msg->options == msg_options) {
-				list_del(&msg->list);
-				found = true;
+		list_for_each_entry_safe(iter, n, &data->pending_list, list) {
+			if (iter->options == msg_options) {
+				list_del(&iter->list);
+				msg = iter;
 				break;
 			}
 		}
 
-		if (!found) {
+		if (!msg) {
 			/*
 			 * here can be implemented dead messages handling
 			 * but the slave should not send such ones - it is to
diff --git a/drivers/iio/common/st_sensors/Kconfig b/drivers/iio/common/st_sensors/Kconfig
index 9364ec7a811f..eda8f347fda5 100644
--- a/drivers/iio/common/st_sensors/Kconfig
+++ b/drivers/iio/common/st_sensors/Kconfig
@@ -13,5 +13,3 @@ config IIO_ST_SENSORS_SPI
 
 config IIO_ST_SENSORS_CORE
 	tristate
-	select IIO_ST_SENSORS_I2C if I2C
-	select IIO_ST_SENSORS_SPI if SPI_MASTER
diff --git a/drivers/iio/common/st_sensors/st_sensors_buffer.c b/drivers/iio/common/st_sensors/st_sensors_buffer.c
index eee30130ae23..e2f108ca949c 100644
--- a/drivers/iio/common/st_sensors/st_sensors_buffer.c
+++ b/drivers/iio/common/st_sensors/st_sensors_buffer.c
@@ -8,14 +8,11 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/trigger.h>
 #include <linux/interrupt.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include <linux/irqreturn.h>
 #include <linux/regmap.h>
 
@@ -57,7 +54,7 @@ irqreturn_t st_sensors_trigger_handler(int irq, void *p)
 	s64 timestamp;
 
 	/*
-	 * If we do timetamping here, do it before reading the values, because
+	 * If we do timestamping here, do it before reading the values, because
 	 * once we've read the values, new interrupts can occur (when using
 	 * the hardware trigger) and the hw_timestamp may get updated.
 	 * By storing it in a local variable first, we are safe.
@@ -79,8 +76,4 @@ st_sensors_get_buffer_element_error:
 
 	return IRQ_HANDLED;
 }
-EXPORT_SYMBOL(st_sensors_trigger_handler);
-
-MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics ST-sensors buffer");
-MODULE_LICENSE("GPL v2");
+EXPORT_SYMBOL_NS(st_sensors_trigger_handler, IIO_ST_SENSORS);
diff --git a/drivers/iio/common/st_sensors/st_sensors_core.c b/drivers/iio/common/st_sensors/st_sensors_core.c
index e051edbc43c1..35720c64fea8 100644
--- a/drivers/iio/common/st_sensors/st_sensors_core.c
+++ b/drivers/iio/common/st_sensors/st_sensors_core.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/delay.h>
 #include <linux/iio/iio.h>
+#include <linux/mutex.h>
 #include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/regmap.h>
@@ -20,11 +21,6 @@
 
 #include "st_sensors_core.h"
 
-static inline u32 st_sensors_get_unaligned_le24(const u8 *p)
-{
-	return (s32)((p[0] | p[1] << 8 | p[2] << 16) << 8) >> 8;
-}
-
 int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,
 				    u8 reg_addr, u8 mask, u8 data)
 {
@@ -50,7 +46,7 @@ int st_sensors_debugfs_reg_access(struct iio_dev *indio_dev,
 
 	return 0;
 }
-EXPORT_SYMBOL(st_sensors_debugfs_reg_access);
+EXPORT_SYMBOL_NS(st_sensors_debugfs_reg_access, IIO_ST_SENSORS);
 
 static int st_sensors_match_odr(struct st_sensor_settings *sensor_settings,
 			unsigned int odr, struct st_sensor_odr_avl *odr_out)
@@ -75,16 +71,18 @@ st_sensors_match_odr_error:
 
 int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)
 {
-	int err;
+	int err = 0;
 	struct st_sensor_odr_avl odr_out = {0, 0};
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	if (!sdata->sensor_settings->odr.addr)
-		return 0;
+	mutex_lock(&sdata->odr_lock);
+
+	if (!sdata->sensor_settings->odr.mask)
+		goto unlock_mutex;
 
 	err = st_sensors_match_odr(sdata->sensor_settings, odr, &odr_out);
 	if (err < 0)
-		goto st_sensors_match_odr_error;
+		goto unlock_mutex;
 
 	if ((sdata->sensor_settings->odr.addr ==
 					sdata->sensor_settings->pw.addr) &&
@@ -107,10 +105,12 @@ int st_sensors_set_odr(struct iio_dev *indio_dev, unsigned int odr)
 	if (err >= 0)
 		sdata->odr = odr_out.hz;
 
-st_sensors_match_odr_error:
+unlock_mutex:
+	mutex_unlock(&sdata->odr_lock);
+
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_set_odr);
+EXPORT_SYMBOL_NS(st_sensors_set_odr, IIO_ST_SENSORS);
 
 static int st_sensors_match_fs(struct st_sensor_settings *sensor_settings,
 					unsigned int fs, int *index_fs_avl)
@@ -150,8 +150,7 @@ static int st_sensors_set_fullscale(struct iio_dev *indio_dev, unsigned int fs)
 	if (err < 0)
 		goto st_accel_set_fullscale_error;
 
-	sdata->current_fullscale = (struct st_sensor_fullscale_avl *)
-					&sdata->sensor_settings->fs.fs_avl[i];
+	sdata->current_fullscale = &sdata->sensor_settings->fs.fs_avl[i];
 	return err;
 
 st_accel_set_fullscale_error:
@@ -204,7 +203,7 @@ int st_sensors_set_enable(struct iio_dev *indio_dev, bool enable)
 set_enable_error:
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_set_enable);
+EXPORT_SYMBOL_NS(st_sensors_set_enable, IIO_ST_SENSORS);
 
 int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable)
 {
@@ -218,19 +217,25 @@ int st_sensors_set_axis_enable(struct iio_dev *indio_dev, u8 axis_enable)
 				axis_enable);
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_set_axis_enable);
+EXPORT_SYMBOL_NS(st_sensors_set_axis_enable, IIO_ST_SENSORS);
+
+static void st_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
 
 int st_sensors_power_enable(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *pdata = iio_priv(indio_dev);
+	struct device *parent = indio_dev->dev.parent;
 	int err;
 
 	/* Regulators not mandatory, but if requested we should enable them. */
-	pdata->vdd = devm_regulator_get(indio_dev->dev.parent, "vdd");
-	if (IS_ERR(pdata->vdd)) {
-		dev_err(&indio_dev->dev, "unable to get Vdd supply\n");
-		return PTR_ERR(pdata->vdd);
-	}
+	pdata->vdd = devm_regulator_get(parent, "vdd");
+	if (IS_ERR(pdata->vdd))
+		return dev_err_probe(&indio_dev->dev, PTR_ERR(pdata->vdd),
+				     "unable to get Vdd supply\n");
+
 	err = regulator_enable(pdata->vdd);
 	if (err != 0) {
 		dev_warn(&indio_dev->dev,
@@ -238,35 +243,25 @@ int st_sensors_power_enable(struct iio_dev *indio_dev)
 		return err;
 	}
 
-	pdata->vdd_io = devm_regulator_get(indio_dev->dev.parent, "vddio");
-	if (IS_ERR(pdata->vdd_io)) {
-		dev_err(&indio_dev->dev, "unable to get Vdd_IO supply\n");
-		err = PTR_ERR(pdata->vdd_io);
-		goto st_sensors_disable_vdd;
-	}
+	err = devm_add_action_or_reset(parent, st_reg_disable, pdata->vdd);
+	if (err)
+		return err;
+
+	pdata->vdd_io = devm_regulator_get(parent, "vddio");
+	if (IS_ERR(pdata->vdd_io))
+		return dev_err_probe(&indio_dev->dev, PTR_ERR(pdata->vdd_io),
+				     "unable to get Vdd_IO supply\n");
+
 	err = regulator_enable(pdata->vdd_io);
 	if (err != 0) {
 		dev_warn(&indio_dev->dev,
 			 "Failed to enable specified Vdd_IO supply\n");
-		goto st_sensors_disable_vdd;
+		return err;
 	}
 
-	return 0;
-
-st_sensors_disable_vdd:
-	regulator_disable(pdata->vdd);
-	return err;
-}
-EXPORT_SYMBOL(st_sensors_power_enable);
-
-void st_sensors_power_disable(struct iio_dev *indio_dev)
-{
-	struct st_sensor_data *pdata = iio_priv(indio_dev);
-
-	regulator_disable(pdata->vdd);
-	regulator_disable(pdata->vdd_io);
+	return devm_add_action_or_reset(parent, st_reg_disable, pdata->vdd_io);
 }
-EXPORT_SYMBOL(st_sensors_power_disable);
+EXPORT_SYMBOL_NS(st_sensors_power_enable, IIO_ST_SENSORS);
 
 static int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev,
 					struct st_sensors_platform_data *pdata)
@@ -278,8 +273,7 @@ static int st_sensors_set_drdy_int_pin(struct iio_dev *indio_dev,
 	    !sdata->sensor_settings->drdy_irq.int2.addr) {
 		if (pdata->drdy_int_pin)
 			dev_info(&indio_dev->dev,
-				 "DRDY on pin INT%d specified, but sensor "
-				 "does not support interrupts\n",
+				 "DRDY on pin INT%d specified, but sensor does not support interrupts\n",
 				 pdata->drdy_int_pin);
 		return 0;
 	}
@@ -328,6 +322,8 @@ static struct st_sensors_platform_data *st_sensors_dev_probe(struct device *dev,
 		return NULL;
 
 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
+	if (!pdata)
+		return ERR_PTR(-ENOMEM);
 	if (!device_property_read_u32(dev, "st,drdy-int-pin", &val) && (val <= 2))
 		pdata->drdy_int_pin = (u8) val;
 	else
@@ -358,9 +354,9 @@ void st_sensors_dev_name_probe(struct device *dev, char *name, int len)
 		return;
 
 	/* The name from the match takes precedence if present */
-	strlcpy(name, match, len);
+	strscpy(name, match, len);
 }
-EXPORT_SYMBOL(st_sensors_dev_name_probe);
+EXPORT_SYMBOL_NS(st_sensors_dev_name_probe, IIO_ST_SENSORS);
 
 int st_sensors_init_sensor(struct iio_dev *indio_dev,
 					struct st_sensors_platform_data *pdata)
@@ -369,8 +365,12 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
 	struct st_sensors_platform_data *of_pdata;
 	int err = 0;
 
+	mutex_init(&sdata->odr_lock);
+
 	/* If OF/DT pdata exists, it will take precedence of anything else */
 	of_pdata = st_sensors_dev_probe(indio_dev->dev.parent, pdata);
+	if (IS_ERR(of_pdata))
+		return PTR_ERR(of_pdata);
 	if (of_pdata)
 		pdata = of_pdata;
 
@@ -443,7 +443,7 @@ int st_sensors_init_sensor(struct iio_dev *indio_dev,
 
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_init_sensor);
+EXPORT_SYMBOL_NS(st_sensors_init_sensor, IIO_ST_SENSORS);
 
 int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
 {
@@ -492,7 +492,7 @@ int st_sensors_set_dataready_irq(struct iio_dev *indio_dev, bool enable)
 st_accel_set_dataready_irq_error:
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_set_dataready_irq);
+EXPORT_SYMBOL_NS(st_sensors_set_dataready_irq, IIO_ST_SENSORS);
 
 int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale)
 {
@@ -515,7 +515,7 @@ int st_sensors_set_fullscale_by_gain(struct iio_dev *indio_dev, int scale)
 st_sensors_match_scale_error:
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_set_fullscale_by_gain);
+EXPORT_SYMBOL_NS(st_sensors_set_fullscale_by_gain, IIO_ST_SENSORS);
 
 static int st_sensors_read_axis_data(struct iio_dev *indio_dev,
 				     struct iio_chan_spec const *ch, int *data)
@@ -541,7 +541,7 @@ static int st_sensors_read_axis_data(struct iio_dev *indio_dev,
 	else if (byte_for_channel == 2)
 		*data = (s16)get_unaligned_le16(outdata);
 	else if (byte_for_channel == 3)
-		*data = (s32)st_sensors_get_unaligned_le24(outdata);
+		*data = (s32)sign_extend32(get_unaligned_le24(outdata), 23);
 
 st_sensors_free_memory:
 	kfree(outdata);
@@ -555,30 +555,32 @@ int st_sensors_read_info_raw(struct iio_dev *indio_dev,
 	int err;
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
-		err = -EBUSY;
+	err = iio_device_claim_direct_mode(indio_dev);
+	if (err)
+		return err;
+
+	mutex_lock(&sdata->odr_lock);
+
+	err = st_sensors_set_enable(indio_dev, true);
+	if (err < 0)
 		goto out;
-	} else {
-		err = st_sensors_set_enable(indio_dev, true);
-		if (err < 0)
-			goto out;
 
-		msleep((sdata->sensor_settings->bootime * 1000) / sdata->odr);
-		err = st_sensors_read_axis_data(indio_dev, ch, val);
-		if (err < 0)
-			goto out;
+	msleep((sdata->sensor_settings->bootime * 1000) / sdata->odr);
+	err = st_sensors_read_axis_data(indio_dev, ch, val);
+	if (err < 0)
+		goto out;
 
-		*val = *val >> ch->scan_type.shift;
+	*val = *val >> ch->scan_type.shift;
+
+	err = st_sensors_set_enable(indio_dev, false);
 
-		err = st_sensors_set_enable(indio_dev, false);
-	}
 out:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&sdata->odr_lock);
+	iio_device_release_direct_mode(indio_dev);
 
 	return err;
 }
-EXPORT_SYMBOL(st_sensors_read_info_raw);
+EXPORT_SYMBOL_NS(st_sensors_read_info_raw, IIO_ST_SENSORS);
 
 /*
  * st_sensors_get_settings_index() - get index of the sensor settings for a
@@ -605,7 +607,7 @@ int st_sensors_get_settings_index(const char *name,
 
 	return -ENODEV;
 }
-EXPORT_SYMBOL(st_sensors_get_settings_index);
+EXPORT_SYMBOL_NS(st_sensors_get_settings_index, IIO_ST_SENSORS);
 
 /*
  * st_sensors_verify_id() - verify sensor ID (WhoAmI) is matching with the
@@ -638,16 +640,15 @@ int st_sensors_verify_id(struct iio_dev *indio_dev)
 
 	return 0;
 }
-EXPORT_SYMBOL(st_sensors_verify_id);
+EXPORT_SYMBOL_NS(st_sensors_verify_id, IIO_ST_SENSORS);
 
 ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	int i, len = 0;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
 	for (i = 0; i < ST_SENSORS_ODR_LIST_MAX; i++) {
 		if (sdata->sensor_settings->odr.odr_avl[i].hz == 0)
 			break;
@@ -655,21 +656,19 @@ ssize_t st_sensors_sysfs_sampling_frequency_avail(struct device *dev,
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ",
 				sdata->sensor_settings->odr.odr_avl[i].hz);
 	}
-	mutex_unlock(&indio_dev->mlock);
 	buf[len - 1] = '\n';
 
 	return len;
 }
-EXPORT_SYMBOL(st_sensors_sysfs_sampling_frequency_avail);
+EXPORT_SYMBOL_NS(st_sensors_sysfs_sampling_frequency_avail, IIO_ST_SENSORS);
 
 ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
 				struct device_attribute *attr, char *buf)
 {
 	int i, len = 0, q, r;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
 	for (i = 0; i < ST_SENSORS_FULLSCALE_AVL_MAX; i++) {
 		if (sdata->sensor_settings->fs.fs_avl[i].num == 0)
 			break;
@@ -679,12 +678,11 @@ ssize_t st_sensors_sysfs_scale_avail(struct device *dev,
 
 		len += scnprintf(buf + len, PAGE_SIZE - len, "%u.%06u ", q, r);
 	}
-	mutex_unlock(&indio_dev->mlock);
 	buf[len - 1] = '\n';
 
 	return len;
 }
-EXPORT_SYMBOL(st_sensors_sysfs_scale_avail);
+EXPORT_SYMBOL_NS(st_sensors_sysfs_scale_avail, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics ST-sensors core");
diff --git a/drivers/iio/common/st_sensors/st_sensors_core.h b/drivers/iio/common/st_sensors/st_sensors_core.h
index e8894be55660..09f3e602a2e2 100644
--- a/drivers/iio/common/st_sensors/st_sensors_core.h
+++ b/drivers/iio/common/st_sensors/st_sensors_core.h
@@ -4,6 +4,7 @@
  */
 #ifndef __ST_SENSORS_CORE_H
 #define __ST_SENSORS_CORE_H
+struct iio_dev;
 int st_sensors_write_data_with_mask(struct iio_dev *indio_dev,
 				    u8 reg_addr, u8 mask, u8 data);
 #endif
diff --git a/drivers/iio/common/st_sensors/st_sensors_i2c.c b/drivers/iio/common/st_sensors/st_sensors_i2c.c
index 286830fb5d35..ee95082c7410 100644
--- a/drivers/iio/common/st_sensors/st_sensors_i2c.c
+++ b/drivers/iio/common/st_sensors/st_sensors_i2c.c
@@ -7,15 +7,14 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
+#include <linux/i2c.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/iio/iio.h>
 #include <linux/regmap.h>
 
 #include <linux/iio/common/st_sensors_i2c.h>
 
-
 #define ST_SENSORS_I2C_MULTIREAD	0x80
 
 static const struct regmap_config st_sensors_i2c_regmap_config = {
@@ -49,22 +48,20 @@ int st_sensors_i2c_configure(struct iio_dev *indio_dev,
 
 	sdata->regmap = devm_regmap_init_i2c(client, config);
 	if (IS_ERR(sdata->regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap (%d)\n",
-			(int)PTR_ERR(sdata->regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap (%ld)\n",
+			PTR_ERR(sdata->regmap));
 		return PTR_ERR(sdata->regmap);
 	}
 
 	i2c_set_clientdata(client, indio_dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = client->name;
 
-	sdata->dev = &client->dev;
 	sdata->irq = client->irq;
 
 	return 0;
 }
-EXPORT_SYMBOL(st_sensors_i2c_configure);
+EXPORT_SYMBOL_NS(st_sensors_i2c_configure, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics ST-sensors i2c driver");
diff --git a/drivers/iio/common/st_sensors/st_sensors_spi.c b/drivers/iio/common/st_sensors/st_sensors_spi.c
index 1275fb0eda31..63e302c3fbaa 100644
--- a/drivers/iio/common/st_sensors/st_sensors_spi.c
+++ b/drivers/iio/common/st_sensors/st_sensors_spi.c
@@ -9,13 +9,12 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/iio/iio.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
+#include <linux/spi/spi.h>
 
 #include <linux/iio/common/st_sensors_spi.h>
-#include "st_sensors_core.h"
 
 #define ST_SENSORS_SPI_MULTIREAD	0xc0
 
@@ -44,7 +43,7 @@ static bool st_sensors_is_spi_3_wire(struct spi_device *spi)
 	if (device_property_read_bool(dev, "spi-3wire"))
 		return true;
 
-	pdata = (struct st_sensors_platform_data *)dev->platform_data;
+	pdata = dev_get_platdata(dev);
 	if (pdata && pdata->spi_3wire)
 		return true;
 
@@ -101,22 +100,20 @@ int st_sensors_spi_configure(struct iio_dev *indio_dev,
 
 	sdata->regmap = devm_regmap_init_spi(spi, config);
 	if (IS_ERR(sdata->regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap (%d)\n",
-			(int)PTR_ERR(sdata->regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap (%ld)\n",
+			PTR_ERR(sdata->regmap));
 		return PTR_ERR(sdata->regmap);
 	}
 
 	spi_set_drvdata(spi, indio_dev);
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi->modalias;
 
-	sdata->dev = &spi->dev;
 	sdata->irq = spi->irq;
 
 	return 0;
 }
-EXPORT_SYMBOL(st_sensors_spi_configure);
+EXPORT_SYMBOL_NS(st_sensors_spi_configure, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics ST-sensors spi driver");
diff --git a/drivers/iio/common/st_sensors/st_sensors_trigger.c b/drivers/iio/common/st_sensors/st_sensors_trigger.c
index e817537cdfb5..899b640c0a70 100644
--- a/drivers/iio/common/st_sensors/st_sensors_trigger.c
+++ b/drivers/iio/common/st_sensors/st_sensors_trigger.c
@@ -8,8 +8,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/trigger.h>
 #include <linux/interrupt.h>
@@ -23,36 +21,32 @@
  * @sdata: Sensor data.
  *
  * returns:
- * 0 - no new samples available
- * 1 - new samples available
- * negative - error or unknown
+ * false - no new samples available or read error
+ * true - new samples available
  */
-static int st_sensors_new_samples_available(struct iio_dev *indio_dev,
-					    struct st_sensor_data *sdata)
+static bool st_sensors_new_samples_available(struct iio_dev *indio_dev,
+					     struct st_sensor_data *sdata)
 {
 	int ret, status;
 
 	/* How would I know if I can't check it? */
 	if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr)
-		return -EINVAL;
+		return true;
 
 	/* No scan mask, no interrupt */
 	if (!indio_dev->active_scan_mask)
-		return 0;
+		return false;
 
 	ret = regmap_read(sdata->regmap,
 			  sdata->sensor_settings->drdy_irq.stat_drdy.addr,
 			  &status);
 	if (ret < 0) {
-		dev_err(sdata->dev,
+		dev_err(indio_dev->dev.parent,
 			"error checking samples available\n");
-		return ret;
+		return false;
 	}
 
-	if (status & sdata->sensor_settings->drdy_irq.stat_drdy.mask)
-		return 1;
-
-	return 0;
+	return !!(status & sdata->sensor_settings->drdy_irq.stat_drdy.mask);
 }
 
 /**
@@ -93,7 +87,7 @@ static irqreturn_t st_sensors_irq_thread(int irq, void *p)
 	    st_sensors_new_samples_available(indio_dev, sdata)) {
 		iio_trigger_poll_chained(p);
 	} else {
-		dev_dbg(sdata->dev, "spurious IRQ\n");
+		dev_dbg(indio_dev->dev.parent, "spurious IRQ\n");
 		return IRQ_NONE;
 	}
 
@@ -113,7 +107,8 @@ static irqreturn_t st_sensors_irq_thread(int irq, void *p)
 	 */
 	while (sdata->hw_irq_trigger &&
 	       st_sensors_new_samples_available(indio_dev, sdata)) {
-		dev_dbg(sdata->dev, "more samples came in during polling\n");
+		dev_dbg(indio_dev->dev.parent,
+			"more samples came in during polling\n");
 		sdata->hw_timestamp = iio_get_time_ns(indio_dev);
 		iio_trigger_poll_chained(p);
 	}
@@ -125,10 +120,12 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 				const struct iio_trigger_ops *trigger_ops)
 {
 	struct st_sensor_data *sdata = iio_priv(indio_dev);
+	struct device *parent = indio_dev->dev.parent;
 	unsigned long irq_trig;
 	int err;
 
-	sdata->trig = iio_trigger_alloc("%s-trigger", indio_dev->name);
+	sdata->trig = devm_iio_trigger_alloc(parent, "%s-trigger",
+					     indio_dev->name);
 	if (sdata->trig == NULL) {
 		dev_err(&indio_dev->dev, "failed to allocate iio trigger.\n");
 		return -ENOMEM;
@@ -136,7 +133,6 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 
 	iio_trigger_set_drvdata(sdata->trig, indio_dev);
 	sdata->trig->ops = trigger_ops;
-	sdata->trig->dev.parent = sdata->dev;
 
 	irq_trig = irqd_get_trigger_type(irq_get_irq_data(sdata->irq));
 	/*
@@ -148,9 +144,7 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 	case IRQF_TRIGGER_LOW:
 		if (!sdata->sensor_settings->drdy_irq.addr_ihl) {
 			dev_err(&indio_dev->dev,
-				"falling/low specified for IRQ "
-				"but hardware supports only rising/high: "
-				"will request rising/high\n");
+				"falling/low specified for IRQ but hardware supports only rising/high: will request rising/high\n");
 			if (irq_trig == IRQF_TRIGGER_FALLING)
 				irq_trig = IRQF_TRIGGER_RISING;
 			if (irq_trig == IRQF_TRIGGER_LOW)
@@ -161,10 +155,9 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 				sdata->sensor_settings->drdy_irq.addr_ihl,
 				sdata->sensor_settings->drdy_irq.mask_ihl, 1);
 			if (err < 0)
-				goto iio_trigger_free;
+				return err;
 			dev_info(&indio_dev->dev,
-				 "interrupts on the falling edge or "
-				 "active low level\n");
+				 "interrupts on the falling edge or active low level\n");
 		}
 		break;
 	case IRQF_TRIGGER_RISING:
@@ -178,16 +171,20 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 	default:
 		/* This is the most preferred mode, if possible */
 		dev_err(&indio_dev->dev,
-			"unsupported IRQ trigger specified (%lx), enforce "
-			"rising edge\n", irq_trig);
+			"unsupported IRQ trigger specified (%lx), enforce rising edge\n", irq_trig);
 		irq_trig = IRQF_TRIGGER_RISING;
 	}
 
 	/* Tell the interrupt handler that we're dealing with edges */
 	if (irq_trig == IRQF_TRIGGER_FALLING ||
-	    irq_trig == IRQF_TRIGGER_RISING)
+	    irq_trig == IRQF_TRIGGER_RISING) {
+		if (!sdata->sensor_settings->drdy_irq.stat_drdy.addr) {
+			dev_err(&indio_dev->dev,
+				"edge IRQ not supported w/o stat register.\n");
+			return -EOPNOTSUPP;
+		}
 		sdata->edge_irq = true;
-	else
+	} else {
 		/*
 		 * If we're not using edges (i.e. level interrupts) we
 		 * just mask off the IRQ, handle one interrupt, then
@@ -195,6 +192,7 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 		 * interrupt handler top half again and start over.
 		 */
 		irq_trig |= IRQF_ONESHOT;
+	}
 
 	/*
 	 * If the interrupt pin is Open Drain, by definition this
@@ -208,43 +206,28 @@ int st_sensors_allocate_trigger(struct iio_dev *indio_dev,
 	    sdata->sensor_settings->drdy_irq.stat_drdy.addr)
 		irq_trig |= IRQF_SHARED;
 
-	err = request_threaded_irq(sdata->irq,
-				   st_sensors_irq_handler,
-				   st_sensors_irq_thread,
-				   irq_trig,
-				   sdata->trig->name,
-				   sdata->trig);
+	err = devm_request_threaded_irq(parent,
+					sdata->irq,
+					st_sensors_irq_handler,
+					st_sensors_irq_thread,
+					irq_trig,
+					sdata->trig->name,
+					sdata->trig);
 	if (err) {
 		dev_err(&indio_dev->dev, "failed to request trigger IRQ.\n");
-		goto iio_trigger_free;
+		return err;
 	}
 
-	err = iio_trigger_register(sdata->trig);
+	err = devm_iio_trigger_register(parent, sdata->trig);
 	if (err < 0) {
 		dev_err(&indio_dev->dev, "failed to register iio trigger.\n");
-		goto iio_trigger_register_error;
+		return err;
 	}
 	indio_dev->trig = iio_trigger_get(sdata->trig);
 
 	return 0;
-
-iio_trigger_register_error:
-	free_irq(sdata->irq, sdata->trig);
-iio_trigger_free:
-	iio_trigger_free(sdata->trig);
-	return err;
 }
-EXPORT_SYMBOL(st_sensors_allocate_trigger);
-
-void st_sensors_deallocate_trigger(struct iio_dev *indio_dev)
-{
-	struct st_sensor_data *sdata = iio_priv(indio_dev);
-
-	iio_trigger_unregister(sdata->trig);
-	free_irq(sdata->irq, sdata->trig);
-	iio_trigger_free(sdata->trig);
-}
-EXPORT_SYMBOL(st_sensors_deallocate_trigger);
+EXPORT_SYMBOL_NS(st_sensors_allocate_trigger, IIO_ST_SENSORS);
 
 int st_sensors_validate_device(struct iio_trigger *trig,
 			       struct iio_dev *indio_dev)
@@ -256,8 +239,4 @@ int st_sensors_validate_device(struct iio_trigger *trig,
 
 	return 0;
 }
-EXPORT_SYMBOL(st_sensors_validate_device);
-
-MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics ST-sensors trigger");
-MODULE_LICENSE("GPL v2");
+EXPORT_SYMBOL_NS(st_sensors_validate_device, IIO_ST_SENSORS);
diff --git a/drivers/iio/dac/Kconfig b/drivers/iio/dac/Kconfig
index 979070196da9..80521bd28d0f 100644
--- a/drivers/iio/dac/Kconfig
+++ b/drivers/iio/dac/Kconfig
@@ -6,6 +6,16 @@
 
 menu "Digital to analog converters"
 
+config AD3552R
+	tristate "Analog Devices AD3552R DAC driver"
+	depends on SPI_MASTER
+	help
+	  Say yes here to build support for Analog Devices AD3552R
+	  Digital to Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad3552r.
+
 config AD5064
 	tristate "Analog Devices AD5064 and similar multi-channel DAC driver"
 	depends on (SPI_MASTER && I2C!=m) || I2C
@@ -121,25 +131,16 @@ config AD5624R_SPI
 	  Say yes here to build support for Analog Devices AD5624R, AD5644R and
 	  AD5664R converters (DAC). This driver uses the common SPI interface.
 
-config LTC1660
-	tristate "Linear Technology LTC1660/LTC1665 DAC SPI driver"
-	depends on SPI
-	help
-	  Say yes here to build support for Linear Technology
-	  LTC1660 and LTC1665 Digital to Analog Converters.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ltc1660.
-
-config LTC2632
-	tristate "Linear Technology LTC2632-12/10/8 DAC spi driver"
+config LTC2688
+	tristate "Analog Devices LTC2688 DAC spi driver"
 	depends on SPI
+	select REGMAP
 	help
-	  Say yes here to build support for Linear Technology
-	  LTC2632-12, LTC2632-10, LTC2632-8 converters (DAC).
+	  Say yes here to build support for Analog Devices
+	  LTC2688 converters (DAC).
 
 	  To compile this driver as a module, choose M here: the
-	  module will be called ltc2632.
+	  module will be called ltc2688.
 
 config AD5686
 	tristate
@@ -161,9 +162,11 @@ config AD5696_I2C
 	depends on I2C
 	select AD5686
 	help
-	  Say yes here to build support for Analog Devices AD5671R, AD5675R,
-	  AD5694, AD5694R, AD5695R, AD5696, AD5696R Voltage Output Digital to
-	  Analog Converter.
+	  Say yes here to build support for Analog Devices AD5311R, AD5338R,
+	  AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693, AD5693R,
+	  AD5694, AD5694R, AD5695R, AD5696, and AD5696R Digital to Analog
+	  converters.
+
 	  To compile this driver as a module, choose M here: the module will be
 	  called ad5696.
 
@@ -208,6 +211,26 @@ config AD5764
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad5764.
 
+config AD5766
+	tristate "Analog Devices AD5766/AD5767 DAC driver"
+	depends on SPI_MASTER
+	help
+	  Say yes here to build support for Analog Devices AD5766, AD5767
+	  Digital to Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5766.
+
+config AD5770R
+	tristate "Analog Devices AD5770R IDAC driver"
+	depends on SPI_MASTER
+	help
+	  Say yes here to build support for Analog Devices AD5770R Digital to
+	  Analog Converter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5770r.
+
 config AD5791
 	tristate "Analog Devices AD5760/AD5780/AD5781/AD5790/AD5791 DAC SPI driver"
 	depends on SPI
@@ -219,6 +242,17 @@ config AD5791
 	  To compile this driver as a module, choose M here: the
 	  module will be called ad5791.
 
+config AD7293
+	tristate "Analog Devices AD7293 Power Amplifier Current Controller"
+	depends on SPI
+	help
+	  Say yes here to build support for Analog Devices AD7293
+	  Power Amplifier Current Controller with
+	  ADC, DACs, and Temperature and Current Sensors
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad7293.
+
 config AD7303
 	tristate "Analog Devices AD7303 DAC driver"
 	depends on SPI
@@ -229,16 +263,6 @@ config AD7303
 	  To compile this driver as module choose M here: the module will be called
 	  ad7303.
 
-config CIO_DAC
-	tristate "Measurement Computing CIO-DAC IIO driver"
-	depends on X86 && (ISA_BUS || PC104)
-	select ISA_BUS_API
-	help
-	  Say yes here to build support for the Measurement Computing CIO-DAC
-	  analog output device family (CIO-DAC16, CIO-DAC08, PC104-DAC06). The
-	  base port addresses for the devices may be configured via the base
-	  array module parameter.
-
 config AD8801
 	tristate "Analog Devices AD8801/AD8803 DAC driver"
 	depends on SPI_MASTER
@@ -249,9 +273,18 @@ config AD8801
 	  To compile this driver as a module choose M here: the module will be called
 	  ad8801.
 
+config CIO_DAC
+	tristate "Measurement Computing CIO-DAC IIO driver"
+	depends on X86 && (ISA_BUS || PC104)
+	select ISA_BUS_API
+	help
+	  Say yes here to build support for the Measurement Computing CIO-DAC
+	  analog output device family (CIO-DAC16, CIO-DAC08, PC104-DAC06). The
+	  base port addresses for the devices may be configured via the base
+	  array module parameter.
+
 config DPOT_DAC
 	tristate "DAC emulation using a DPOT"
-	depends on OF
 	help
 	  Say yes here to build support for DAC emulation using a digital
 	  potentiometer.
@@ -271,13 +304,34 @@ config DS4424
 config LPC18XX_DAC
 	tristate "NXP LPC18xx DAC driver"
 	depends on ARCH_LPC18XX || COMPILE_TEST
-	depends on OF && HAS_IOMEM
+	depends on HAS_IOMEM
 	help
 	  Say yes here to build support for NXP LPC18XX DAC.
 
 	  To compile this driver as a module, choose M here: the module will be
 	  called lpc18xx_dac.
 
+config LTC1660
+	tristate "Linear Technology LTC1660/LTC1665 DAC SPI driver"
+	depends on SPI
+	help
+	  Say yes here to build support for Linear Technology
+	  LTC1660 and LTC1665 Digital to Analog Converters.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ltc1660.
+
+config LTC2632
+	tristate "Linear Technology LTC2632-12/10/8 and similar DAC spi driver"
+	depends on SPI
+	help
+	  Say yes here to build support for Linear Technology
+	  LTC2632, LTC2634 and LTC2636 DAC resolution 12/10/8 bit
+	  low 0-2.5V and high 0-4.096V range converters.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ltc2632.
+
 config M62332
 	tristate "Mitsubishi M62332 DAC driver"
 	depends on I2C
@@ -306,7 +360,6 @@ config MAX517
 config MAX5821
 	tristate "Maxim MAX5821 DAC driver"
 	depends on I2C
-	depends on OF
 	help
 	  Say yes here to build support for Maxim MAX5821
 	  10 bits DAC.
@@ -314,7 +367,7 @@ config MAX5821
 config MCP4725
 	tristate "MCP4725/6 DAC driver"
 	depends on I2C
-	---help---
+	help
 	  Say Y here if you want to build a driver for the Microchip
 	  MCP 4725/6 12-bit digital-to-analog converter (DAC) with I2C
 	  interface.
@@ -363,7 +416,7 @@ config TI_DAC5571
 	help
 	  Driver for the Texas Instruments
 	  DAC5571, DAC6571, DAC7571, DAC5574, DAC6574, DAC7574, DAC5573,
-	  DAC6573, DAC7573, DAC8571, DAC8574.
+	  DAC6573, DAC7573, DAC8571, DAC8574, DAC121C081.
 
 	  If compiled as a module, it will be called ti-dac5571.
 
@@ -388,7 +441,6 @@ config TI_DAC7612
 
 config VF610_DAC
 	tristate "Vybrid vf610 DAC driver"
-	depends on OF
 	depends on HAS_IOMEM
 	help
 	  Say yes here to support Vybrid board digital-to-analog converter.
diff --git a/drivers/iio/dac/Makefile b/drivers/iio/dac/Makefile
index 1369fa1d2f0e..ec3e42713f00 100644
--- a/drivers/iio/dac/Makefile
+++ b/drivers/iio/dac/Makefile
@@ -4,6 +4,7 @@
 #
 
 # When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_AD3552R) += ad3552r.o
 obj-$(CONFIG_AD5360) += ad5360.o
 obj-$(CONFIG_AD5380) += ad5380.o
 obj-$(CONFIG_AD5421) += ad5421.o
@@ -19,10 +20,13 @@ obj-$(CONFIG_AD5755) += ad5755.o
 obj-$(CONFIG_AD5755) += ad5758.o
 obj-$(CONFIG_AD5761) += ad5761.o
 obj-$(CONFIG_AD5764) += ad5764.o
+obj-$(CONFIG_AD5766) += ad5766.o
+obj-$(CONFIG_AD5770R) += ad5770r.o
 obj-$(CONFIG_AD5791) += ad5791.o
 obj-$(CONFIG_AD5686) += ad5686.o
 obj-$(CONFIG_AD5686_SPI) += ad5686-spi.o
 obj-$(CONFIG_AD5696_I2C) += ad5696-i2c.o
+obj-$(CONFIG_AD7293) += ad7293.o
 obj-$(CONFIG_AD7303) += ad7303.o
 obj-$(CONFIG_AD8801) += ad8801.o
 obj-$(CONFIG_CIO_DAC) += cio-dac.o
@@ -31,6 +35,7 @@ obj-$(CONFIG_DS4424) += ds4424.o
 obj-$(CONFIG_LPC18XX_DAC) += lpc18xx_dac.o
 obj-$(CONFIG_LTC1660) += ltc1660.o
 obj-$(CONFIG_LTC2632) += ltc2632.o
+obj-$(CONFIG_LTC2688) += ltc2688.o
 obj-$(CONFIG_M62332) += m62332.o
 obj-$(CONFIG_MAX517) += max517.o
 obj-$(CONFIG_MAX5821) += max5821.o
diff --git a/drivers/iio/dac/ad3552r.c b/drivers/iio/dac/ad3552r.c
new file mode 100644
index 000000000000..d5ea1a1be122
--- /dev/null
+++ b/drivers/iio/dac/ad3552r.c
@@ -0,0 +1,1138 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices AD3552R
+ * Digital to Analog converter driver
+ *
+ * Copyright 2021 Analog Devices Inc.
+ */
+#include <asm/unaligned.h>
+#include <linux/device.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+/* Register addresses */
+/* Primary address space */
+#define AD3552R_REG_ADDR_INTERFACE_CONFIG_A		0x00
+#define   AD3552R_MASK_SOFTWARE_RESET			(BIT(7) | BIT(0))
+#define   AD3552R_MASK_ADDR_ASCENSION			BIT(5)
+#define   AD3552R_MASK_SDO_ACTIVE			BIT(4)
+#define AD3552R_REG_ADDR_INTERFACE_CONFIG_B		0x01
+#define   AD3552R_MASK_SINGLE_INST			BIT(7)
+#define   AD3552R_MASK_SHORT_INSTRUCTION		BIT(3)
+#define AD3552R_REG_ADDR_DEVICE_CONFIG			0x02
+#define   AD3552R_MASK_DEVICE_STATUS(n)			BIT(4 + (n))
+#define   AD3552R_MASK_CUSTOM_MODES			GENMASK(3, 2)
+#define   AD3552R_MASK_OPERATING_MODES			GENMASK(1, 0)
+#define AD3552R_REG_ADDR_CHIP_TYPE			0x03
+#define   AD3552R_MASK_CLASS				GENMASK(7, 0)
+#define AD3552R_REG_ADDR_PRODUCT_ID_L			0x04
+#define AD3552R_REG_ADDR_PRODUCT_ID_H			0x05
+#define AD3552R_REG_ADDR_CHIP_GRADE			0x06
+#define   AD3552R_MASK_GRADE				GENMASK(7, 4)
+#define   AD3552R_MASK_DEVICE_REVISION			GENMASK(3, 0)
+#define AD3552R_REG_ADDR_SCRATCH_PAD			0x0A
+#define AD3552R_REG_ADDR_SPI_REVISION			0x0B
+#define AD3552R_REG_ADDR_VENDOR_L			0x0C
+#define AD3552R_REG_ADDR_VENDOR_H			0x0D
+#define AD3552R_REG_ADDR_STREAM_MODE			0x0E
+#define   AD3552R_MASK_LENGTH				GENMASK(7, 0)
+#define AD3552R_REG_ADDR_TRANSFER_REGISTER		0x0F
+#define   AD3552R_MASK_MULTI_IO_MODE			GENMASK(7, 6)
+#define   AD3552R_MASK_STREAM_LENGTH_KEEP_VALUE		BIT(2)
+#define AD3552R_REG_ADDR_INTERFACE_CONFIG_C		0x10
+#define   AD3552R_MASK_CRC_ENABLE			(GENMASK(7, 6) |\
+							 GENMASK(1, 0))
+#define   AD3552R_MASK_STRICT_REGISTER_ACCESS		BIT(5)
+#define AD3552R_REG_ADDR_INTERFACE_STATUS_A		0x11
+#define   AD3552R_MASK_INTERFACE_NOT_READY		BIT(7)
+#define   AD3552R_MASK_CLOCK_COUNTING_ERROR		BIT(5)
+#define   AD3552R_MASK_INVALID_OR_NO_CRC		BIT(3)
+#define   AD3552R_MASK_WRITE_TO_READ_ONLY_REGISTER	BIT(2)
+#define   AD3552R_MASK_PARTIAL_REGISTER_ACCESS		BIT(1)
+#define   AD3552R_MASK_REGISTER_ADDRESS_INVALID		BIT(0)
+#define AD3552R_REG_ADDR_INTERFACE_CONFIG_D		0x14
+#define   AD3552R_MASK_ALERT_ENABLE_PULLUP		BIT(6)
+#define   AD3552R_MASK_MEM_CRC_EN			BIT(4)
+#define   AD3552R_MASK_SDO_DRIVE_STRENGTH		GENMASK(3, 2)
+#define   AD3552R_MASK_DUAL_SPI_SYNCHROUNOUS_EN		BIT(1)
+#define   AD3552R_MASK_SPI_CONFIG_DDR			BIT(0)
+#define AD3552R_REG_ADDR_SH_REFERENCE_CONFIG		0x15
+#define   AD3552R_MASK_IDUMP_FAST_MODE			BIT(6)
+#define   AD3552R_MASK_SAMPLE_HOLD_DIFFERENTIAL_USER_EN	BIT(5)
+#define   AD3552R_MASK_SAMPLE_HOLD_USER_TRIM		GENMASK(4, 3)
+#define   AD3552R_MASK_SAMPLE_HOLD_USER_ENABLE		BIT(2)
+#define   AD3552R_MASK_REFERENCE_VOLTAGE_SEL		GENMASK(1, 0)
+#define AD3552R_REG_ADDR_ERR_ALARM_MASK			0x16
+#define   AD3552R_MASK_REF_RANGE_ALARM			BIT(6)
+#define   AD3552R_MASK_CLOCK_COUNT_ERR_ALARM		BIT(5)
+#define   AD3552R_MASK_MEM_CRC_ERR_ALARM		BIT(4)
+#define   AD3552R_MASK_SPI_CRC_ERR_ALARM		BIT(3)
+#define   AD3552R_MASK_WRITE_TO_READ_ONLY_ALARM		BIT(2)
+#define   AD3552R_MASK_PARTIAL_REGISTER_ACCESS_ALARM	BIT(1)
+#define   AD3552R_MASK_REGISTER_ADDRESS_INVALID_ALARM	BIT(0)
+#define AD3552R_REG_ADDR_ERR_STATUS			0x17
+#define   AD3552R_MASK_REF_RANGE_ERR_STATUS			BIT(6)
+#define   AD3552R_MASK_DUAL_SPI_STREAM_EXCEEDS_DAC_ERR_STATUS	BIT(5)
+#define   AD3552R_MASK_MEM_CRC_ERR_STATUS			BIT(4)
+#define   AD3552R_MASK_RESET_STATUS				BIT(0)
+#define AD3552R_REG_ADDR_POWERDOWN_CONFIG		0x18
+#define   AD3552R_MASK_CH_DAC_POWERDOWN(ch)		BIT(4 + (ch))
+#define   AD3552R_MASK_CH_AMPLIFIER_POWERDOWN(ch)	BIT(ch)
+#define AD3552R_REG_ADDR_CH0_CH1_OUTPUT_RANGE		0x19
+#define   AD3552R_MASK_CH_OUTPUT_RANGE_SEL(ch)		((ch) ? GENMASK(7, 4) :\
+							 GENMASK(3, 0))
+#define AD3552R_REG_ADDR_CH_OFFSET(ch)			(0x1B + (ch) * 2)
+#define   AD3552R_MASK_CH_OFFSET_BITS_0_7		GENMASK(7, 0)
+#define AD3552R_REG_ADDR_CH_GAIN(ch)			(0x1C + (ch) * 2)
+#define   AD3552R_MASK_CH_RANGE_OVERRIDE		BIT(7)
+#define   AD3552R_MASK_CH_GAIN_SCALING_N		GENMASK(6, 5)
+#define   AD3552R_MASK_CH_GAIN_SCALING_P		GENMASK(4, 3)
+#define   AD3552R_MASK_CH_OFFSET_POLARITY		BIT(2)
+#define   AD3552R_MASK_CH_OFFSET_BIT_8			BIT(0)
+/*
+ * Secondary region
+ * For multibyte registers specify the highest address because the access is
+ * done in descending order
+ */
+#define AD3552R_SECONDARY_REGION_START			0x28
+#define AD3552R_REG_ADDR_HW_LDAC_16B			0x28
+#define AD3552R_REG_ADDR_CH_DAC_16B(ch)			(0x2C - (1 - ch) * 2)
+#define AD3552R_REG_ADDR_DAC_PAGE_MASK_16B		0x2E
+#define AD3552R_REG_ADDR_CH_SELECT_16B			0x2F
+#define AD3552R_REG_ADDR_INPUT_PAGE_MASK_16B		0x31
+#define AD3552R_REG_ADDR_SW_LDAC_16B			0x32
+#define AD3552R_REG_ADDR_CH_INPUT_16B(ch)		(0x36 - (1 - ch) * 2)
+/* 3 bytes registers */
+#define AD3552R_REG_START_24B				0x37
+#define AD3552R_REG_ADDR_HW_LDAC_24B			0x37
+#define AD3552R_REG_ADDR_CH_DAC_24B(ch)			(0x3D - (1 - ch) * 3)
+#define AD3552R_REG_ADDR_DAC_PAGE_MASK_24B		0x40
+#define AD3552R_REG_ADDR_CH_SELECT_24B			0x41
+#define AD3552R_REG_ADDR_INPUT_PAGE_MASK_24B		0x44
+#define AD3552R_REG_ADDR_SW_LDAC_24B			0x45
+#define AD3552R_REG_ADDR_CH_INPUT_24B(ch)		(0x4B - (1 - ch) * 3)
+
+/* Useful defines */
+#define AD3552R_NUM_CH					2
+#define AD3552R_MASK_CH(ch)				BIT(ch)
+#define AD3552R_MASK_ALL_CH				GENMASK(1, 0)
+#define AD3552R_MAX_REG_SIZE				3
+#define AD3552R_READ_BIT				BIT(7)
+#define AD3552R_ADDR_MASK				GENMASK(6, 0)
+#define AD3552R_MASK_DAC_12B				0xFFF0
+#define AD3552R_DEFAULT_CONFIG_B_VALUE			0x8
+#define AD3552R_SCRATCH_PAD_TEST_VAL1			0x34
+#define AD3552R_SCRATCH_PAD_TEST_VAL2			0xB2
+#define AD3552R_GAIN_SCALE				1000
+#define AD3552R_LDAC_PULSE_US				100
+
+enum ad3552r_ch_vref_select {
+	/* Internal source with Vref I/O floating */
+	AD3552R_INTERNAL_VREF_PIN_FLOATING,
+	/* Internal source with Vref I/O at 2.5V */
+	AD3552R_INTERNAL_VREF_PIN_2P5V,
+	/* External source with Vref I/O as input */
+	AD3552R_EXTERNAL_VREF_PIN_INPUT
+};
+
+enum ad3542r_id {
+	AD3542R_ID = 0x4008,
+	AD3552R_ID = 0x4009,
+};
+
+enum ad3552r_ch_output_range {
+	/* Range from 0 V to 2.5 V. Requires Rfb1x connection */
+	AD3552R_CH_OUTPUT_RANGE_0__2P5V,
+	/* Range from 0 V to 5 V. Requires Rfb1x connection  */
+	AD3552R_CH_OUTPUT_RANGE_0__5V,
+	/* Range from 0 V to 10 V. Requires Rfb2x connection  */
+	AD3552R_CH_OUTPUT_RANGE_0__10V,
+	/* Range from -5 V to 5 V. Requires Rfb2x connection  */
+	AD3552R_CH_OUTPUT_RANGE_NEG_5__5V,
+	/* Range from -10 V to 10 V. Requires Rfb4x connection  */
+	AD3552R_CH_OUTPUT_RANGE_NEG_10__10V,
+};
+
+static const s32 ad3552r_ch_ranges[][2] = {
+	[AD3552R_CH_OUTPUT_RANGE_0__2P5V]	= {0, 2500},
+	[AD3552R_CH_OUTPUT_RANGE_0__5V]		= {0, 5000},
+	[AD3552R_CH_OUTPUT_RANGE_0__10V]	= {0, 10000},
+	[AD3552R_CH_OUTPUT_RANGE_NEG_5__5V]	= {-5000, 5000},
+	[AD3552R_CH_OUTPUT_RANGE_NEG_10__10V]	= {-10000, 10000}
+};
+
+enum ad3542r_ch_output_range {
+	/* Range from 0 V to 2.5 V. Requires Rfb1x connection */
+	AD3542R_CH_OUTPUT_RANGE_0__2P5V,
+	/* Range from 0 V to 3 V. Requires Rfb1x connection  */
+	AD3542R_CH_OUTPUT_RANGE_0__3V,
+	/* Range from 0 V to 5 V. Requires Rfb1x connection  */
+	AD3542R_CH_OUTPUT_RANGE_0__5V,
+	/* Range from 0 V to 10 V. Requires Rfb2x connection  */
+	AD3542R_CH_OUTPUT_RANGE_0__10V,
+	/* Range from -2.5 V to 7.5 V. Requires Rfb2x connection  */
+	AD3542R_CH_OUTPUT_RANGE_NEG_2P5__7P5V,
+	/* Range from -5 V to 5 V. Requires Rfb2x connection  */
+	AD3542R_CH_OUTPUT_RANGE_NEG_5__5V,
+};
+
+static const s32 ad3542r_ch_ranges[][2] = {
+	[AD3542R_CH_OUTPUT_RANGE_0__2P5V]	= {0, 2500},
+	[AD3542R_CH_OUTPUT_RANGE_0__3V]		= {0, 3000},
+	[AD3542R_CH_OUTPUT_RANGE_0__5V]		= {0, 5000},
+	[AD3542R_CH_OUTPUT_RANGE_0__10V]	= {0, 10000},
+	[AD3542R_CH_OUTPUT_RANGE_NEG_2P5__7P5V]	= {-2500, 7500},
+	[AD3542R_CH_OUTPUT_RANGE_NEG_5__5V]	= {-5000, 5000}
+};
+
+enum ad3552r_ch_gain_scaling {
+	/* Gain scaling of 1 */
+	AD3552R_CH_GAIN_SCALING_1,
+	/* Gain scaling of 0.5 */
+	AD3552R_CH_GAIN_SCALING_0_5,
+	/* Gain scaling of 0.25 */
+	AD3552R_CH_GAIN_SCALING_0_25,
+	/* Gain scaling of 0.125 */
+	AD3552R_CH_GAIN_SCALING_0_125,
+};
+
+/* Gain * AD3552R_GAIN_SCALE */
+static const s32 gains_scaling_table[] = {
+	[AD3552R_CH_GAIN_SCALING_1]		= 1000,
+	[AD3552R_CH_GAIN_SCALING_0_5]		= 500,
+	[AD3552R_CH_GAIN_SCALING_0_25]		= 250,
+	[AD3552R_CH_GAIN_SCALING_0_125]		= 125
+};
+
+enum ad3552r_dev_attributes {
+	/* - Direct register values */
+	/* From 0-3 */
+	AD3552R_SDO_DRIVE_STRENGTH,
+	/*
+	 * 0 -> Internal Vref, vref_io pin floating (default)
+	 * 1 -> Internal Vref, vref_io driven by internal vref
+	 * 2 or 3 -> External Vref
+	 */
+	AD3552R_VREF_SELECT,
+	/* Read registers in ascending order if set. Else descending */
+	AD3552R_ADDR_ASCENSION,
+};
+
+enum ad3552r_ch_attributes {
+	/* DAC powerdown */
+	AD3552R_CH_DAC_POWERDOWN,
+	/* DAC amplifier powerdown */
+	AD3552R_CH_AMPLIFIER_POWERDOWN,
+	/* Select the output range. Select from enum ad3552r_ch_output_range */
+	AD3552R_CH_OUTPUT_RANGE_SEL,
+	/*
+	 * Over-rider the range selector in order to manually set the output
+	 * voltage range
+	 */
+	AD3552R_CH_RANGE_OVERRIDE,
+	/* Manually set the offset voltage */
+	AD3552R_CH_GAIN_OFFSET,
+	/* Sets the polarity of the offset. */
+	AD3552R_CH_GAIN_OFFSET_POLARITY,
+	/* PDAC gain scaling */
+	AD3552R_CH_GAIN_SCALING_P,
+	/* NDAC gain scaling */
+	AD3552R_CH_GAIN_SCALING_N,
+	/* Rfb value */
+	AD3552R_CH_RFB,
+	/* Channel select. When set allow Input -> DAC and Mask -> DAC */
+	AD3552R_CH_SELECT,
+};
+
+struct ad3552r_ch_data {
+	s32	scale_int;
+	s32	scale_dec;
+	s32	offset_int;
+	s32	offset_dec;
+	s16	gain_offset;
+	u16	rfb;
+	u8	n;
+	u8	p;
+	u8	range;
+	bool	range_override;
+};
+
+struct ad3552r_desc {
+	/* Used to look the spi bus for atomic operations where needed */
+	struct mutex		lock;
+	struct gpio_desc	*gpio_reset;
+	struct gpio_desc	*gpio_ldac;
+	struct spi_device	*spi;
+	struct ad3552r_ch_data	ch_data[AD3552R_NUM_CH];
+	struct iio_chan_spec	channels[AD3552R_NUM_CH + 1];
+	unsigned long		enabled_ch;
+	unsigned int		num_ch;
+	enum ad3542r_id		chip_id;
+};
+
+static const u16 addr_mask_map[][2] = {
+	[AD3552R_ADDR_ASCENSION] = {
+			AD3552R_REG_ADDR_INTERFACE_CONFIG_A,
+			AD3552R_MASK_ADDR_ASCENSION
+	},
+	[AD3552R_SDO_DRIVE_STRENGTH] = {
+			AD3552R_REG_ADDR_INTERFACE_CONFIG_D,
+			AD3552R_MASK_SDO_DRIVE_STRENGTH
+	},
+	[AD3552R_VREF_SELECT] = {
+			AD3552R_REG_ADDR_SH_REFERENCE_CONFIG,
+			AD3552R_MASK_REFERENCE_VOLTAGE_SEL
+	},
+};
+
+/* 0 -> reg addr, 1->ch0 mask, 2->ch1 mask */
+static const u16 addr_mask_map_ch[][3] = {
+	[AD3552R_CH_DAC_POWERDOWN] = {
+			AD3552R_REG_ADDR_POWERDOWN_CONFIG,
+			AD3552R_MASK_CH_DAC_POWERDOWN(0),
+			AD3552R_MASK_CH_DAC_POWERDOWN(1)
+	},
+	[AD3552R_CH_AMPLIFIER_POWERDOWN] = {
+			AD3552R_REG_ADDR_POWERDOWN_CONFIG,
+			AD3552R_MASK_CH_AMPLIFIER_POWERDOWN(0),
+			AD3552R_MASK_CH_AMPLIFIER_POWERDOWN(1)
+	},
+	[AD3552R_CH_OUTPUT_RANGE_SEL] = {
+			AD3552R_REG_ADDR_CH0_CH1_OUTPUT_RANGE,
+			AD3552R_MASK_CH_OUTPUT_RANGE_SEL(0),
+			AD3552R_MASK_CH_OUTPUT_RANGE_SEL(1)
+	},
+	[AD3552R_CH_SELECT] = {
+			AD3552R_REG_ADDR_CH_SELECT_16B,
+			AD3552R_MASK_CH(0),
+			AD3552R_MASK_CH(1)
+	}
+};
+
+static u8 _ad3552r_reg_len(u8 addr)
+{
+	switch (addr) {
+	case AD3552R_REG_ADDR_HW_LDAC_16B:
+	case AD3552R_REG_ADDR_CH_SELECT_16B:
+	case AD3552R_REG_ADDR_SW_LDAC_16B:
+	case AD3552R_REG_ADDR_HW_LDAC_24B:
+	case AD3552R_REG_ADDR_CH_SELECT_24B:
+	case AD3552R_REG_ADDR_SW_LDAC_24B:
+		return 1;
+	default:
+		break;
+	}
+
+	if (addr > AD3552R_REG_ADDR_HW_LDAC_24B)
+		return 3;
+	if (addr > AD3552R_REG_ADDR_HW_LDAC_16B)
+		return 2;
+
+	return 1;
+}
+
+/* SPI transfer to device */
+static int ad3552r_transfer(struct ad3552r_desc *dac, u8 addr, u32 len,
+			    u8 *data, bool is_read)
+{
+	/* Maximum transfer: Addr (1B) + 2 * (Data Reg (3B)) + SW LDAC(1B) */
+	u8 buf[8];
+
+	buf[0] = addr & AD3552R_ADDR_MASK;
+	buf[0] |= is_read ? AD3552R_READ_BIT : 0;
+	if (is_read)
+		return spi_write_then_read(dac->spi, buf, 1, data, len);
+
+	memcpy(buf + 1, data, len);
+	return spi_write_then_read(dac->spi, buf, len + 1, NULL, 0);
+}
+
+static int ad3552r_write_reg(struct ad3552r_desc *dac, u8 addr, u16 val)
+{
+	u8 reg_len;
+	u8 buf[AD3552R_MAX_REG_SIZE] = { 0 };
+
+	reg_len = _ad3552r_reg_len(addr);
+	if (reg_len == 2)
+		/* Only DAC register are 2 bytes wide */
+		val &= AD3552R_MASK_DAC_12B;
+	if (reg_len == 1)
+		buf[0] = val & 0xFF;
+	else
+		/* reg_len can be 2 or 3, but 3rd bytes needs to be set to 0 */
+		put_unaligned_be16(val, buf);
+
+	return ad3552r_transfer(dac, addr, reg_len, buf, false);
+}
+
+static int ad3552r_read_reg(struct ad3552r_desc *dac, u8 addr, u16 *val)
+{
+	int err;
+	u8  reg_len, buf[AD3552R_MAX_REG_SIZE] = { 0 };
+
+	reg_len = _ad3552r_reg_len(addr);
+	err = ad3552r_transfer(dac, addr, reg_len, buf, true);
+	if (err)
+		return err;
+
+	if (reg_len == 1)
+		*val = buf[0];
+	else
+		/* reg_len can be 2 or 3, but only first 2 bytes are relevant */
+		*val = get_unaligned_be16(buf);
+
+	return 0;
+}
+
+static u16 ad3552r_field_prep(u16 val, u16 mask)
+{
+	return (val << __ffs(mask)) & mask;
+}
+
+/* Update field of a register, shift val if needed */
+static int ad3552r_update_reg_field(struct ad3552r_desc *dac, u8 addr, u16 mask,
+				    u16 val)
+{
+	int ret;
+	u16 reg;
+
+	ret = ad3552r_read_reg(dac, addr, &reg);
+	if (ret < 0)
+		return ret;
+
+	reg &= ~mask;
+	reg |= ad3552r_field_prep(val, mask);
+
+	return ad3552r_write_reg(dac, addr, reg);
+}
+
+static int ad3552r_set_ch_value(struct ad3552r_desc *dac,
+				enum ad3552r_ch_attributes attr,
+				u8 ch,
+				u16 val)
+{
+	/* Update register related to attributes in chip */
+	return ad3552r_update_reg_field(dac, addr_mask_map_ch[attr][0],
+				       addr_mask_map_ch[attr][ch + 1], val);
+}
+
+#define AD3552R_CH_DAC(_idx) ((struct iio_chan_spec) {		\
+	.type = IIO_VOLTAGE,					\
+	.output = true,						\
+	.indexed = true,					\
+	.channel = _idx,					\
+	.scan_index = _idx,					\
+	.scan_type = {						\
+		.sign = 'u',					\
+		.realbits = 16,					\
+		.storagebits = 16,				\
+		.endianness = IIO_BE,				\
+	},							\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+				BIT(IIO_CHAN_INFO_SCALE) |	\
+				BIT(IIO_CHAN_INFO_ENABLE) |	\
+				BIT(IIO_CHAN_INFO_OFFSET),	\
+})
+
+static int ad3552r_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val,
+			    int *val2,
+			    long mask)
+{
+	struct ad3552r_desc *dac = iio_priv(indio_dev);
+	u16 tmp_val;
+	int err;
+	u8 ch = chan->channel;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&dac->lock);
+		err = ad3552r_read_reg(dac, AD3552R_REG_ADDR_CH_DAC_24B(ch),
+				       &tmp_val);
+		mutex_unlock(&dac->lock);
+		if (err < 0)
+			return err;
+		*val = tmp_val;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_ENABLE:
+		mutex_lock(&dac->lock);
+		err = ad3552r_read_reg(dac, AD3552R_REG_ADDR_POWERDOWN_CONFIG,
+				       &tmp_val);
+		mutex_unlock(&dac->lock);
+		if (err < 0)
+			return err;
+		*val = !((tmp_val & AD3552R_MASK_CH_DAC_POWERDOWN(ch)) >>
+			  __ffs(AD3552R_MASK_CH_DAC_POWERDOWN(ch)));
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = dac->ch_data[ch].scale_int;
+		*val2 = dac->ch_data[ch].scale_dec;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = dac->ch_data[ch].offset_int;
+		*val2 = dac->ch_data[ch].offset_dec;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad3552r_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val,
+			     int val2,
+			     long mask)
+{
+	struct ad3552r_desc *dac = iio_priv(indio_dev);
+	int err;
+
+	mutex_lock(&dac->lock);
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		err = ad3552r_write_reg(dac,
+					AD3552R_REG_ADDR_CH_DAC_24B(chan->channel),
+					val);
+		break;
+	case IIO_CHAN_INFO_ENABLE:
+		err = ad3552r_set_ch_value(dac, AD3552R_CH_DAC_POWERDOWN,
+					   chan->channel, !val);
+		break;
+	default:
+		err = -EINVAL;
+		break;
+	}
+	mutex_unlock(&dac->lock);
+
+	return err;
+}
+
+static const struct iio_info ad3552r_iio_info = {
+	.read_raw = ad3552r_read_raw,
+	.write_raw = ad3552r_write_raw
+};
+
+static int32_t ad3552r_trigger_hw_ldac(struct gpio_desc *ldac)
+{
+	gpiod_set_value_cansleep(ldac, 0);
+	usleep_range(AD3552R_LDAC_PULSE_US, AD3552R_LDAC_PULSE_US + 10);
+	gpiod_set_value_cansleep(ldac, 1);
+
+	return 0;
+}
+
+static int ad3552r_write_all_channels(struct ad3552r_desc *dac, u8 *data)
+{
+	int err, len;
+	u8 addr, buff[AD3552R_NUM_CH * AD3552R_MAX_REG_SIZE + 1];
+
+	addr = AD3552R_REG_ADDR_CH_INPUT_24B(1);
+	/* CH1 */
+	memcpy(buff, data + 2, 2);
+	buff[2] = 0;
+	/* CH0 */
+	memcpy(buff + 3, data, 2);
+	buff[5] = 0;
+	len = 6;
+	if (!dac->gpio_ldac) {
+		/* Software LDAC */
+		buff[6] = AD3552R_MASK_ALL_CH;
+		++len;
+	}
+	err = ad3552r_transfer(dac, addr, len, buff, false);
+	if (err)
+		return err;
+
+	if (dac->gpio_ldac)
+		return ad3552r_trigger_hw_ldac(dac->gpio_ldac);
+
+	return 0;
+}
+
+static int ad3552r_write_codes(struct ad3552r_desc *dac, u32 mask, u8 *data)
+{
+	int err;
+	u8 addr, buff[AD3552R_MAX_REG_SIZE];
+
+	if (mask == AD3552R_MASK_ALL_CH) {
+		if (memcmp(data, data + 2, 2) != 0)
+			return ad3552r_write_all_channels(dac, data);
+
+		addr = AD3552R_REG_ADDR_INPUT_PAGE_MASK_24B;
+	} else {
+		addr = AD3552R_REG_ADDR_CH_INPUT_24B(__ffs(mask));
+	}
+
+	memcpy(buff, data, 2);
+	buff[2] = 0;
+	err = ad3552r_transfer(dac, addr, 3, data, false);
+	if (err)
+		return err;
+
+	if (dac->gpio_ldac)
+		return ad3552r_trigger_hw_ldac(dac->gpio_ldac);
+
+	return ad3552r_write_reg(dac, AD3552R_REG_ADDR_SW_LDAC_24B, mask);
+}
+
+static irqreturn_t ad3552r_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct iio_buffer *buf = indio_dev->buffer;
+	struct ad3552r_desc *dac = iio_priv(indio_dev);
+	/* Maximum size of a scan */
+	u8 buff[AD3552R_NUM_CH * AD3552R_MAX_REG_SIZE];
+	int err;
+
+	memset(buff, 0, sizeof(buff));
+	err = iio_pop_from_buffer(buf, buff);
+	if (err)
+		goto end;
+
+	mutex_lock(&dac->lock);
+	ad3552r_write_codes(dac, *indio_dev->active_scan_mask, buff);
+	mutex_unlock(&dac->lock);
+end:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static int ad3552r_check_scratch_pad(struct ad3552r_desc *dac)
+{
+	const u16 val1 = AD3552R_SCRATCH_PAD_TEST_VAL1;
+	const u16 val2 = AD3552R_SCRATCH_PAD_TEST_VAL2;
+	u16 val;
+	int err;
+
+	err = ad3552r_write_reg(dac, AD3552R_REG_ADDR_SCRATCH_PAD, val1);
+	if (err < 0)
+		return err;
+
+	err = ad3552r_read_reg(dac, AD3552R_REG_ADDR_SCRATCH_PAD, &val);
+	if (err < 0)
+		return err;
+
+	if (val1 != val)
+		return -ENODEV;
+
+	err = ad3552r_write_reg(dac, AD3552R_REG_ADDR_SCRATCH_PAD, val2);
+	if (err < 0)
+		return err;
+
+	err = ad3552r_read_reg(dac, AD3552R_REG_ADDR_SCRATCH_PAD, &val);
+	if (err < 0)
+		return err;
+
+	if (val2 != val)
+		return -ENODEV;
+
+	return 0;
+}
+
+struct reg_addr_pool {
+	struct ad3552r_desc *dac;
+	u8		    addr;
+};
+
+static int ad3552r_read_reg_wrapper(struct reg_addr_pool *addr)
+{
+	int err;
+	u16 val;
+
+	err = ad3552r_read_reg(addr->dac, addr->addr, &val);
+	if (err)
+		return err;
+
+	return val;
+}
+
+static int ad3552r_reset(struct ad3552r_desc *dac)
+{
+	struct reg_addr_pool addr;
+	int ret;
+	int val;
+
+	dac->gpio_reset = devm_gpiod_get_optional(&dac->spi->dev, "reset",
+						  GPIOD_OUT_LOW);
+	if (IS_ERR(dac->gpio_reset))
+		return dev_err_probe(&dac->spi->dev, PTR_ERR(dac->gpio_reset),
+				     "Error while getting gpio reset");
+
+	if (dac->gpio_reset) {
+		/* Perform hardware reset */
+		usleep_range(10, 20);
+		gpiod_set_value_cansleep(dac->gpio_reset, 1);
+	} else {
+		/* Perform software reset if no GPIO provided */
+		ret = ad3552r_update_reg_field(dac,
+					       AD3552R_REG_ADDR_INTERFACE_CONFIG_A,
+					       AD3552R_MASK_SOFTWARE_RESET,
+					       AD3552R_MASK_SOFTWARE_RESET);
+		if (ret < 0)
+			return ret;
+
+	}
+
+	addr.dac = dac;
+	addr.addr = AD3552R_REG_ADDR_INTERFACE_CONFIG_B;
+	ret = readx_poll_timeout(ad3552r_read_reg_wrapper, &addr, val,
+				 val == AD3552R_DEFAULT_CONFIG_B_VALUE ||
+				 val < 0,
+				 5000, 50000);
+	if (val < 0)
+		ret = val;
+	if (ret) {
+		dev_err(&dac->spi->dev, "Error while resetting");
+		return ret;
+	}
+
+	ret = readx_poll_timeout(ad3552r_read_reg_wrapper, &addr, val,
+				 !(val & AD3552R_MASK_INTERFACE_NOT_READY) ||
+				 val < 0,
+				 5000, 50000);
+	if (val < 0)
+		ret = val;
+	if (ret) {
+		dev_err(&dac->spi->dev, "Error while resetting");
+		return ret;
+	}
+
+	return ad3552r_update_reg_field(dac,
+					addr_mask_map[AD3552R_ADDR_ASCENSION][0],
+					addr_mask_map[AD3552R_ADDR_ASCENSION][1],
+					val);
+}
+
+static void ad3552r_get_custom_range(struct ad3552r_desc *dac, s32 i, s32 *v_min,
+				     s32 *v_max)
+{
+	s64 vref, tmp, common, offset, gn, gp;
+	/*
+	 * From datasheet formula (In Volts):
+	 *	Vmin = 2.5 + [(GainN + Offset / 1024) * 2.5 * Rfb * 1.03]
+	 *	Vmax = 2.5 - [(GainP + Offset / 1024) * 2.5 * Rfb * 1.03]
+	 * Calculus are converted to milivolts
+	 */
+	vref = 2500;
+	/* 2.5 * 1.03 * 1000 (To mV) */
+	common = 2575 * dac->ch_data[i].rfb;
+	offset = dac->ch_data[i].gain_offset;
+
+	gn = gains_scaling_table[dac->ch_data[i].n];
+	tmp = (1024 * gn + AD3552R_GAIN_SCALE * offset) * common;
+	tmp = div_s64(tmp, 1024  * AD3552R_GAIN_SCALE);
+	*v_max = vref + tmp;
+
+	gp = gains_scaling_table[dac->ch_data[i].p];
+	tmp = (1024 * gp - AD3552R_GAIN_SCALE * offset) * common;
+	tmp = div_s64(tmp, 1024 * AD3552R_GAIN_SCALE);
+	*v_min = vref - tmp;
+}
+
+static void ad3552r_calc_gain_and_offset(struct ad3552r_desc *dac, s32 ch)
+{
+	s32 idx, v_max, v_min, span, rem;
+	s64 tmp;
+
+	if (dac->ch_data[ch].range_override) {
+		ad3552r_get_custom_range(dac, ch, &v_min, &v_max);
+	} else {
+		/* Normal range */
+		idx = dac->ch_data[ch].range;
+		if (dac->chip_id == AD3542R_ID) {
+			v_min = ad3542r_ch_ranges[idx][0];
+			v_max = ad3542r_ch_ranges[idx][1];
+		} else {
+			v_min = ad3552r_ch_ranges[idx][0];
+			v_max = ad3552r_ch_ranges[idx][1];
+		}
+	}
+
+	/*
+	 * From datasheet formula:
+	 *	Vout = Span * (D / 65536) + Vmin
+	 * Converted to scale and offset:
+	 *	Scale = Span / 65536
+	 *	Offset = 65536 * Vmin / Span
+	 *
+	 * Reminders are in micros in order to be printed as
+	 * IIO_VAL_INT_PLUS_MICRO
+	 */
+	span = v_max - v_min;
+	dac->ch_data[ch].scale_int = div_s64_rem(span, 65536, &rem);
+	/* Do operations in microvolts */
+	dac->ch_data[ch].scale_dec = DIV_ROUND_CLOSEST((s64)rem * 1000000,
+							65536);
+
+	dac->ch_data[ch].offset_int = div_s64_rem(v_min * 65536, span, &rem);
+	tmp = (s64)rem * 1000000;
+	dac->ch_data[ch].offset_dec = div_s64(tmp, span);
+}
+
+static int ad3552r_find_range(u16 id, s32 *vals)
+{
+	int i, len;
+	const s32 (*ranges)[2];
+
+	if (id == AD3542R_ID) {
+		len = ARRAY_SIZE(ad3542r_ch_ranges);
+		ranges = ad3542r_ch_ranges;
+	} else {
+		len = ARRAY_SIZE(ad3552r_ch_ranges);
+		ranges = ad3552r_ch_ranges;
+	}
+
+	for (i = 0; i < len; i++)
+		if (vals[0] == ranges[i][0] * 1000 &&
+		    vals[1] == ranges[i][1] * 1000)
+			return i;
+
+	return -EINVAL;
+}
+
+static int ad3552r_configure_custom_gain(struct ad3552r_desc *dac,
+					 struct fwnode_handle *child,
+					 u32 ch)
+{
+	struct device *dev = &dac->spi->dev;
+	struct fwnode_handle *gain_child;
+	u32 val;
+	int err;
+	u8 addr;
+	u16 reg = 0, offset;
+
+	gain_child = fwnode_get_named_child_node(child,
+						 "custom-output-range-config");
+	if (!gain_child) {
+		dev_err(dev,
+			"mandatory custom-output-range-config property missing\n");
+		return -EINVAL;
+	}
+
+	dac->ch_data[ch].range_override = 1;
+	reg |= ad3552r_field_prep(1, AD3552R_MASK_CH_RANGE_OVERRIDE);
+
+	err = fwnode_property_read_u32(gain_child, "adi,gain-scaling-p", &val);
+	if (err) {
+		dev_err(dev, "mandatory adi,gain-scaling-p property missing\n");
+		goto put_child;
+	}
+	reg |= ad3552r_field_prep(val, AD3552R_MASK_CH_GAIN_SCALING_P);
+	dac->ch_data[ch].p = val;
+
+	err = fwnode_property_read_u32(gain_child, "adi,gain-scaling-n", &val);
+	if (err) {
+		dev_err(dev, "mandatory adi,gain-scaling-n property missing\n");
+		goto put_child;
+	}
+	reg |= ad3552r_field_prep(val, AD3552R_MASK_CH_GAIN_SCALING_N);
+	dac->ch_data[ch].n = val;
+
+	err = fwnode_property_read_u32(gain_child, "adi,rfb-ohms", &val);
+	if (err) {
+		dev_err(dev, "mandatory adi,rfb-ohms property missing\n");
+		goto put_child;
+	}
+	dac->ch_data[ch].rfb = val;
+
+	err = fwnode_property_read_u32(gain_child, "adi,gain-offset", &val);
+	if (err) {
+		dev_err(dev, "mandatory adi,gain-offset property missing\n");
+		goto put_child;
+	}
+	dac->ch_data[ch].gain_offset = val;
+
+	offset = abs((s32)val);
+	reg |= ad3552r_field_prep((offset >> 8), AD3552R_MASK_CH_OFFSET_BIT_8);
+
+	reg |= ad3552r_field_prep((s32)val < 0, AD3552R_MASK_CH_OFFSET_POLARITY);
+	addr = AD3552R_REG_ADDR_CH_GAIN(ch);
+	err = ad3552r_write_reg(dac, addr,
+				offset & AD3552R_MASK_CH_OFFSET_BITS_0_7);
+	if (err) {
+		dev_err(dev, "Error writing register\n");
+		goto put_child;
+	}
+
+	err = ad3552r_write_reg(dac, addr, reg);
+	if (err) {
+		dev_err(dev, "Error writing register\n");
+		goto put_child;
+	}
+
+put_child:
+	fwnode_handle_put(gain_child);
+
+	return err;
+}
+
+static void ad3552r_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
+static int ad3552r_configure_device(struct ad3552r_desc *dac)
+{
+	struct device *dev = &dac->spi->dev;
+	struct fwnode_handle *child;
+	struct regulator *vref;
+	int err, cnt = 0, voltage, delta = 100000;
+	u32 vals[2], val, ch;
+
+	dac->gpio_ldac = devm_gpiod_get_optional(dev, "ldac", GPIOD_OUT_HIGH);
+	if (IS_ERR(dac->gpio_ldac))
+		return dev_err_probe(dev, PTR_ERR(dac->gpio_ldac),
+				     "Error getting gpio ldac");
+
+	vref = devm_regulator_get_optional(dev, "vref");
+	if (IS_ERR(vref)) {
+		if (PTR_ERR(vref) != -ENODEV)
+			return dev_err_probe(dev, PTR_ERR(vref),
+					     "Error getting vref");
+
+		if (device_property_read_bool(dev, "adi,vref-out-en"))
+			val = AD3552R_INTERNAL_VREF_PIN_2P5V;
+		else
+			val = AD3552R_INTERNAL_VREF_PIN_FLOATING;
+	} else {
+		err = regulator_enable(vref);
+		if (err) {
+			dev_err(dev, "Failed to enable external vref supply\n");
+			return err;
+		}
+
+		err = devm_add_action_or_reset(dev, ad3552r_reg_disable, vref);
+		if (err) {
+			regulator_disable(vref);
+			return err;
+		}
+
+		voltage = regulator_get_voltage(vref);
+		if (voltage > 2500000 + delta || voltage < 2500000 - delta) {
+			dev_warn(dev, "vref-supply must be 2.5V");
+			return -EINVAL;
+		}
+		val = AD3552R_EXTERNAL_VREF_PIN_INPUT;
+	}
+
+	err = ad3552r_update_reg_field(dac,
+				       addr_mask_map[AD3552R_VREF_SELECT][0],
+				       addr_mask_map[AD3552R_VREF_SELECT][1],
+				       val);
+	if (err)
+		return err;
+
+	err = device_property_read_u32(dev, "adi,sdo-drive-strength", &val);
+	if (!err) {
+		if (val > 3) {
+			dev_err(dev, "adi,sdo-drive-strength must be less than 4\n");
+			return -EINVAL;
+		}
+
+		err = ad3552r_update_reg_field(dac,
+					       addr_mask_map[AD3552R_SDO_DRIVE_STRENGTH][0],
+					       addr_mask_map[AD3552R_SDO_DRIVE_STRENGTH][1],
+					       val);
+		if (err)
+			return err;
+	}
+
+	dac->num_ch = device_get_child_node_count(dev);
+	if (!dac->num_ch) {
+		dev_err(dev, "No channels defined\n");
+		return -ENODEV;
+	}
+
+	device_for_each_child_node(dev, child) {
+		err = fwnode_property_read_u32(child, "reg", &ch);
+		if (err) {
+			dev_err(dev, "mandatory reg property missing\n");
+			goto put_child;
+		}
+		if (ch >= AD3552R_NUM_CH) {
+			dev_err(dev, "reg must be less than %d\n",
+				AD3552R_NUM_CH);
+			err = -EINVAL;
+			goto put_child;
+		}
+
+		if (fwnode_property_present(child, "adi,output-range-microvolt")) {
+			err = fwnode_property_read_u32_array(child,
+							     "adi,output-range-microvolt",
+							     vals,
+							     2);
+			if (err) {
+				dev_err(dev,
+					"adi,output-range-microvolt property could not be parsed\n");
+				goto put_child;
+			}
+
+			err = ad3552r_find_range(dac->chip_id, vals);
+			if (err < 0) {
+				dev_err(dev,
+					"Invalid adi,output-range-microvolt value\n");
+				goto put_child;
+			}
+			val = err;
+			err = ad3552r_set_ch_value(dac,
+						   AD3552R_CH_OUTPUT_RANGE_SEL,
+						   ch, val);
+			if (err)
+				goto put_child;
+
+			dac->ch_data[ch].range = val;
+		} else if (dac->chip_id == AD3542R_ID) {
+			dev_err(dev,
+				"adi,output-range-microvolt is required for ad3542r\n");
+			err = -EINVAL;
+			goto put_child;
+		} else {
+			err = ad3552r_configure_custom_gain(dac, child, ch);
+			if (err)
+				goto put_child;
+		}
+
+		ad3552r_calc_gain_and_offset(dac, ch);
+		dac->enabled_ch |= BIT(ch);
+
+		err = ad3552r_set_ch_value(dac, AD3552R_CH_SELECT, ch, 1);
+		if (err < 0)
+			goto put_child;
+
+		dac->channels[cnt] = AD3552R_CH_DAC(ch);
+		++cnt;
+
+	}
+
+	/* Disable unused channels */
+	for_each_clear_bit(ch, &dac->enabled_ch, AD3552R_NUM_CH) {
+		err = ad3552r_set_ch_value(dac, AD3552R_CH_AMPLIFIER_POWERDOWN,
+					   ch, 1);
+		if (err)
+			return err;
+	}
+
+	dac->num_ch = cnt;
+
+	return 0;
+put_child:
+	fwnode_handle_put(child);
+
+	return err;
+}
+
+static int ad3552r_init(struct ad3552r_desc *dac)
+{
+	int err;
+	u16 val, id;
+
+	err = ad3552r_reset(dac);
+	if (err) {
+		dev_err(&dac->spi->dev, "Reset failed\n");
+		return err;
+	}
+
+	err = ad3552r_check_scratch_pad(dac);
+	if (err) {
+		dev_err(&dac->spi->dev, "Scratch pad test failed\n");
+		return err;
+	}
+
+	err = ad3552r_read_reg(dac, AD3552R_REG_ADDR_PRODUCT_ID_L, &val);
+	if (err) {
+		dev_err(&dac->spi->dev, "Fail read PRODUCT_ID_L\n");
+		return err;
+	}
+
+	id = val;
+	err = ad3552r_read_reg(dac, AD3552R_REG_ADDR_PRODUCT_ID_H, &val);
+	if (err) {
+		dev_err(&dac->spi->dev, "Fail read PRODUCT_ID_H\n");
+		return err;
+	}
+
+	id |= val << 8;
+	if (id != dac->chip_id) {
+		dev_err(&dac->spi->dev, "Product id not matching\n");
+		return -ENODEV;
+	}
+
+	return ad3552r_configure_device(dac);
+}
+
+static int ad3552r_probe(struct spi_device *spi)
+{
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct ad3552r_desc *dac;
+	struct iio_dev *indio_dev;
+	int err;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*dac));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	dac = iio_priv(indio_dev);
+	dac->spi = spi;
+	dac->chip_id = id->driver_data;
+
+	mutex_init(&dac->lock);
+
+	err = ad3552r_init(dac);
+	if (err)
+		return err;
+
+	/* Config triggered buffer device */
+	if (dac->chip_id == AD3552R_ID)
+		indio_dev->name = "ad3552r";
+	else
+		indio_dev->name = "ad3542r";
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->info = &ad3552r_iio_info;
+	indio_dev->num_channels = dac->num_ch;
+	indio_dev->channels = dac->channels;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	err = devm_iio_triggered_buffer_setup_ext(&indio_dev->dev, indio_dev, NULL,
+						  &ad3552r_trigger_handler,
+						  IIO_BUFFER_DIRECTION_OUT,
+						  NULL,
+						  NULL);
+	if (err)
+		return err;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id ad3552r_id[] = {
+	{ "ad3542r", AD3542R_ID },
+	{ "ad3552r", AD3552R_ID },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, ad3552r_id);
+
+static const struct of_device_id ad3552r_of_match[] = {
+	{ .compatible = "adi,ad3542r"},
+	{ .compatible = "adi,ad3552r"},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ad3552r_of_match);
+
+static struct spi_driver ad3552r_driver = {
+	.driver = {
+		.name = "ad3552r",
+		.of_match_table = ad3552r_of_match,
+	},
+	.probe = ad3552r_probe,
+	.id_table = ad3552r_id
+};
+module_spi_driver(ad3552r_driver);
+
+MODULE_AUTHOR("Mihail Chindris <mihail.chindris@analog.com>");
+MODULE_DESCRIPTION("Analog Device AD3552R DAC");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/dac/ad5064.c b/drivers/iio/dac/ad5064.c
index d33642de9720..4447b8811827 100644
--- a/drivers/iio/dac/ad5064.c
+++ b/drivers/iio/dac/ad5064.c
@@ -68,8 +68,8 @@ enum ad5064_regmap_type {
  * struct ad5064_chip_info - chip specific information
  * @shared_vref:	whether the vref supply is shared between channels
  * @internal_vref:	internal reference voltage. 0 if the chip has no
-			internal vref.
- * @channel:		channel specification
+ *			internal vref.
+ * @channels:		channel specification
  * @num_channels:	number of channels
  * @regmap_type:	register map layout variant
  */
@@ -98,6 +98,7 @@ typedef int (*ad5064_write_func)(struct ad5064_state *st, unsigned int cmd,
  * @use_internal_vref:	set to true if the internal reference voltage should be
  *			used.
  * @write:		register write callback
+ * @lock:		maintain consistency between cached and dev state
  * @data:		i2c/spi transfer buffers
  */
 
@@ -111,17 +112,16 @@ struct ad5064_state {
 	bool				use_internal_vref;
 
 	ad5064_write_func		write;
-	/* Lock used to maintain consistency between cached and dev state */
 	struct mutex lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
 		u8 i2c[3];
 		__be32 spi;
-	} data ____cacheline_aligned;
+	} data __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad5064_type {
@@ -277,7 +277,7 @@ static ssize_t ad5064_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5064_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", st->pwr_down[chan->channel]);
+	return sysfs_emit(buf, "%d\n", st->pwr_down[chan->channel]);
 }
 
 static ssize_t ad5064_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -288,7 +288,7 @@ static ssize_t ad5064_write_dac_powerdown(struct iio_dev *indio_dev,
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -377,7 +377,7 @@ static const struct iio_chan_spec_ext_info ad5064_ext_info[] = {
 		.shared = IIO_SEPARATE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5064_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5064_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5064_powerdown_mode_enum),
 	{ },
 };
 
@@ -389,7 +389,7 @@ static const struct iio_chan_spec_ext_info ltc2617_ext_info[] = {
 		.shared = IIO_SEPARATE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ltc2617_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ltc2617_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ltc2617_powerdown_mode_enum),
 	{ },
 };
 
@@ -787,7 +787,7 @@ static const char * const ad5064_vref_names[] = {
 	"vrefD",
 };
 
-static const char * const ad5064_vref_name(struct ad5064_state *st,
+static const char *ad5064_vref_name(struct ad5064_state *st,
 	unsigned int vref)
 {
 	return st->chip_info->shared_vref ? "vref" : ad5064_vref_names[vref];
@@ -843,6 +843,13 @@ static int ad5064_request_vref(struct ad5064_state *st, struct device *dev)
 	return ret;
 }
 
+static void ad5064_bulk_reg_disable(void *data)
+{
+	struct ad5064_state *st = data;
+
+	regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);
+}
+
 static int ad5064_probe(struct device *dev, enum ad5064_type type,
 			const char *name, ad5064_write_func write)
 {
@@ -858,7 +865,6 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type,
 
 	st = iio_priv(indio_dev);
 	mutex_init(&st->lock);
-	dev_set_drvdata(dev, indio_dev);
 
 	st->chip_info = &ad5064_chip_info_tbl[type];
 	st->dev = dev;
@@ -872,9 +878,12 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type,
 		ret = regulator_bulk_enable(ad5064_num_vref(st), st->vref_reg);
 		if (ret)
 			return ret;
+
+		ret = devm_add_action_or_reset(dev, ad5064_bulk_reg_disable, st);
+		if (ret)
+			return ret;
 	}
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &ad5064_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -888,30 +897,7 @@ static int ad5064_probe(struct device *dev, enum ad5064_type type,
 		st->dac_cache[i] = midscale;
 	}
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_disable_reg;
-
-	return 0;
-
-error_disable_reg:
-	if (!st->use_internal_vref)
-		regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);
-
-	return ret;
-}
-
-static int ad5064_remove(struct device *dev)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct ad5064_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	if (!st->use_internal_vref)
-		regulator_bulk_disable(ad5064_num_vref(st), st->vref_reg);
-
-	return 0;
+	return devm_iio_device_register(dev, indio_dev);
 }
 
 #if IS_ENABLED(CONFIG_SPI_MASTER)
@@ -933,11 +919,6 @@ static int ad5064_spi_probe(struct spi_device *spi)
 				ad5064_spi_write);
 }
 
-static int ad5064_spi_remove(struct spi_device *spi)
-{
-	return ad5064_remove(&spi->dev);
-}
-
 static const struct spi_device_id ad5064_spi_ids[] = {
 	{"ad5024", ID_AD5024},
 	{"ad5025", ID_AD5025},
@@ -964,7 +945,6 @@ static struct spi_driver ad5064_spi_driver = {
 		   .name = "ad5064",
 	},
 	.probe = ad5064_spi_probe,
-	.remove = ad5064_spi_remove,
 	.id_table = ad5064_spi_ids,
 };
 
@@ -1020,11 +1000,6 @@ static int ad5064_i2c_probe(struct i2c_client *i2c,
 						ad5064_i2c_write);
 }
 
-static int ad5064_i2c_remove(struct i2c_client *i2c)
-{
-	return ad5064_remove(&i2c->dev);
-}
-
 static const struct i2c_device_id ad5064_i2c_ids[] = {
 	{"ad5625", ID_AD5625 },
 	{"ad5625r-1v25", ID_AD5625R_1V25 },
@@ -1082,7 +1057,6 @@ static struct i2c_driver ad5064_i2c_driver = {
 		   .name = "ad5064",
 	},
 	.probe = ad5064_i2c_probe,
-	.remove = ad5064_i2c_remove,
 	.id_table = ad5064_i2c_ids,
 };
 
diff --git a/drivers/iio/dac/ad5360.c b/drivers/iio/dac/ad5360.c
index 2ac428b957e3..e0b7f658d611 100644
--- a/drivers/iio/dac/ad5360.c
+++ b/drivers/iio/dac/ad5360.c
@@ -67,6 +67,7 @@ struct ad5360_chip_info {
  * @chip_info:		chip model specific constants, available modes etc
  * @vref_reg:		vref supply regulators
  * @ctrl:		control register cache
+ * @lock:		lock to protect the data buffer during SPI ops
  * @data:		spi transfer buffers
  */
 
@@ -75,15 +76,16 @@ struct ad5360_state {
 	const struct ad5360_chip_info	*chip_info;
 	struct regulator_bulk_data	vref_reg[3];
 	unsigned int			ctrl;
+	struct mutex			lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[2] ____cacheline_aligned;
+	} data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad5360_type {
@@ -205,10 +207,11 @@ static int ad5360_write(struct iio_dev *indio_dev, unsigned int cmd,
 	unsigned int addr, unsigned int val, unsigned int shift)
 {
 	int ret;
+	struct ad5360_state *st = iio_priv(indio_dev);
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	ret = ad5360_write_unlocked(indio_dev, cmd, addr, val, shift);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -229,7 +232,7 @@ static int ad5360_read(struct iio_dev *indio_dev, unsigned int type,
 		},
 	};
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	st->data[0].d32 = cpu_to_be32(AD5360_CMD(AD5360_CMD_SPECIAL_FUNCTION) |
 		AD5360_ADDR(AD5360_REG_SF_READBACK) |
@@ -240,7 +243,7 @@ static int ad5360_read(struct iio_dev *indio_dev, unsigned int type,
 	if (ret >= 0)
 		ret = be32_to_cpu(st->data[1].d32) & 0xffff;
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -252,7 +255,7 @@ static ssize_t ad5360_read_dac_powerdown(struct device *dev,
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct ad5360_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", (bool)(st->ctrl & AD5360_SF_CTRL_PWR_DOWN));
+	return sysfs_emit(buf, "%d\n", (bool)(st->ctrl & AD5360_SF_CTRL_PWR_DOWN));
 }
 
 static int ad5360_update_ctrl(struct iio_dev *indio_dev, unsigned int set,
@@ -261,7 +264,7 @@ static int ad5360_update_ctrl(struct iio_dev *indio_dev, unsigned int set,
 	struct ad5360_state *st = iio_priv(indio_dev);
 	unsigned int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	st->ctrl |= set;
 	st->ctrl &= ~clr;
@@ -269,7 +272,7 @@ static int ad5360_update_ctrl(struct iio_dev *indio_dev, unsigned int set,
 	ret = ad5360_write_unlocked(indio_dev, AD5360_CMD_SPECIAL_FUNCTION,
 			AD5360_REG_SF_CTRL, st->ctrl, 0);
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -281,7 +284,7 @@ static ssize_t ad5360_write_dac_powerdown(struct device *dev,
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -473,12 +476,13 @@ static int ad5360_probe(struct spi_device *spi)
 	st->chip_info = &ad5360_chip_info_tbl[type];
 	st->spi = spi;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad5360_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
+	mutex_init(&st->lock);
+
 	ret = ad5360_alloc_channels(indio_dev);
 	if (ret) {
 		dev_err(&spi->dev, "Failed to allocate channel spec: %d\n", ret);
@@ -517,7 +521,7 @@ error_free_channels:
 	return ret;
 }
 
-static int ad5360_remove(struct spi_device *spi)
+static void ad5360_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad5360_state *st = iio_priv(indio_dev);
@@ -527,8 +531,6 @@ static int ad5360_remove(struct spi_device *spi)
 	kfree(indio_dev->channels);
 
 	regulator_bulk_disable(st->chip_info->num_vrefs, st->vref_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5360_ids[] = {
diff --git a/drivers/iio/dac/ad5380.c b/drivers/iio/dac/ad5380.c
index 2ebe08326048..a81bfa47a221 100644
--- a/drivers/iio/dac/ad5380.c
+++ b/drivers/iio/dac/ad5380.c
@@ -36,8 +36,7 @@
  * @channel_template:	channel specification template
  * @num_channels:	number of channels
  * @int_vref:		internal vref in uV
-*/
-
+ */
 struct ad5380_chip_info {
 	struct iio_chan_spec	channel_template;
 	unsigned int		num_channels;
@@ -51,14 +50,15 @@ struct ad5380_chip_info {
  * @vref_reg:		vref supply regulator
  * @vref:		actual reference voltage used in uA
  * @pwr_down:		whether the chip is currently in power down mode
+ * @lock:		lock to protect the data buffer during regmap ops
  */
-
 struct ad5380_state {
 	struct regmap			*regmap;
 	const struct ad5380_chip_info	*chip_info;
 	struct regulator		*vref_reg;
 	int				vref;
 	bool				pwr_down;
+	struct mutex			lock;
 };
 
 enum ad5380_type {
@@ -83,7 +83,7 @@ static ssize_t ad5380_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5380_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", st->pwr_down);
+	return sysfs_emit(buf, "%d\n", st->pwr_down);
 }
 
 static ssize_t ad5380_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -94,11 +94,11 @@ static ssize_t ad5380_write_dac_powerdown(struct iio_dev *indio_dev,
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	if (pwr_down)
 		ret = regmap_write(st->regmap, AD5380_REG_SF_PWR_DOWN, 0);
@@ -107,7 +107,7 @@ static ssize_t ad5380_write_dac_powerdown(struct iio_dev *indio_dev,
 
 	st->pwr_down = pwr_down;
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret ? ret : len;
 }
@@ -238,7 +238,7 @@ static const struct iio_info ad5380_info = {
 	.write_raw = ad5380_write_raw,
 };
 
-static struct iio_chan_spec_ext_info ad5380_ext_info[] = {
+static const struct iio_chan_spec_ext_info ad5380_ext_info[] = {
 	{
 		.name = "powerdown",
 		.read = ad5380_read_dac_powerdown,
@@ -247,7 +247,7 @@ static struct iio_chan_spec_ext_info ad5380_ext_info[] = {
 	},
 	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
 		 &ad5380_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5380_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5380_powerdown_mode_enum),
 	{ },
 };
 
@@ -384,12 +384,13 @@ static int ad5380_probe(struct device *dev, struct regmap *regmap,
 	st->chip_info = &ad5380_chip_info_tbl[type];
 	st->regmap = regmap;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &ad5380_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
+	mutex_init(&st->lock);
+
 	ret = ad5380_alloc_channels(indio_dev);
 	if (ret) {
 		dev_err(dev, "Failed to allocate channel spec: %d\n", ret);
@@ -441,7 +442,7 @@ error_free_reg:
 	return ret;
 }
 
-static int ad5380_remove(struct device *dev)
+static void ad5380_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ad5380_state *st = iio_priv(indio_dev);
@@ -450,11 +451,8 @@ static int ad5380_remove(struct device *dev)
 
 	kfree(indio_dev->channels);
 
-	if (!IS_ERR(st->vref_reg)) {
+	if (!IS_ERR(st->vref_reg))
 		regulator_disable(st->vref_reg);
-	}
-
-	return 0;
 }
 
 static bool ad5380_reg_false(struct device *dev, unsigned int reg)
@@ -488,9 +486,9 @@ static int ad5380_spi_probe(struct spi_device *spi)
 	return ad5380_probe(&spi->dev, regmap, id->driver_data, id->name);
 }
 
-static int ad5380_spi_remove(struct spi_device *spi)
+static void ad5380_spi_remove(struct spi_device *spi)
 {
-	return ad5380_remove(&spi->dev);
+	ad5380_remove(&spi->dev);
 }
 
 static const struct spi_device_id ad5380_spi_ids[] = {
@@ -561,9 +559,9 @@ static int ad5380_i2c_probe(struct i2c_client *i2c,
 	return ad5380_probe(&i2c->dev, regmap, id->driver_data, id->name);
 }
 
-static int ad5380_i2c_remove(struct i2c_client *i2c)
+static void ad5380_i2c_remove(struct i2c_client *i2c)
 {
-	return ad5380_remove(&i2c->dev);
+	ad5380_remove(&i2c->dev);
 }
 
 static const struct i2c_device_id ad5380_i2c_ids[] = {
diff --git a/drivers/iio/dac/ad5421.c b/drivers/iio/dac/ad5421.c
index 63063e85cd0a..7644acfd879e 100644
--- a/drivers/iio/dac/ad5421.c
+++ b/drivers/iio/dac/ad5421.c
@@ -62,21 +62,23 @@
  * @current_range:	current range which the device is configured for
  * @data:		spi transfer buffers
  * @fault_mask:		software masking of events
+ * @lock:		lock to protect the data buffer during SPI ops
  */
 struct ad5421_state {
 	struct spi_device		*spi;
 	unsigned int			ctrl;
 	enum ad5421_current_range	current_range;
 	unsigned int			fault_mask;
+	struct mutex			lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[2] ____cacheline_aligned;
+	} data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const struct iio_event_spec ad5421_current_event[] = {
@@ -142,11 +144,12 @@ static int ad5421_write_unlocked(struct iio_dev *indio_dev,
 static int ad5421_write(struct iio_dev *indio_dev, unsigned int reg,
 	unsigned int val)
 {
+	struct ad5421_state *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	ret = ad5421_write_unlocked(indio_dev, reg, val);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -166,7 +169,7 @@ static int ad5421_read(struct iio_dev *indio_dev, unsigned int reg)
 		},
 	};
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	st->data[0].d32 = cpu_to_be32((1 << 23) | (reg << 16));
 
@@ -174,7 +177,7 @@ static int ad5421_read(struct iio_dev *indio_dev, unsigned int reg)
 	if (ret >= 0)
 		ret = be32_to_cpu(st->data[1].d32) & 0xffff;
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -185,14 +188,14 @@ static int ad5421_update_ctrl(struct iio_dev *indio_dev, unsigned int set,
 	struct ad5421_state *st = iio_priv(indio_dev);
 	unsigned int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	st->ctrl &= ~clr;
 	st->ctrl |= set;
 
 	ret = ad5421_write_unlocked(indio_dev, AD5421_REG_CTRL, st->ctrl);
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -400,12 +403,12 @@ static int ad5421_write_event_config(struct iio_dev *indio_dev,
 		return -EINVAL;
 	}
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	if (state)
 		st->fault_mask |= mask;
 	else
 		st->fault_mask &= ~mask;
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return 0;
 }
@@ -484,13 +487,14 @@ static int ad5421_probe(struct spi_device *spi)
 
 	st->spi = spi;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = "ad5421";
 	indio_dev->info = &ad5421_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ad5421_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ad5421_channels);
 
+	mutex_init(&st->lock);
+
 	st->ctrl = AD5421_CTRL_WATCHDOG_DISABLE |
 			AD5421_CTRL_AUTO_FAULT_READBACK;
 
diff --git a/drivers/iio/dac/ad5446.c b/drivers/iio/dac/ad5446.c
index 61c670f7fc5f..7324065d3782 100644
--- a/drivers/iio/dac/ad5446.c
+++ b/drivers/iio/dac/ad5446.c
@@ -17,20 +17,27 @@
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #define MODE_PWRDWN_1k		0x1
 #define MODE_PWRDWN_100k	0x2
 #define MODE_PWRDWN_TRISTATE	0x3
 
 /**
  * struct ad5446_state - driver instance specific data
- * @spi:		spi_device
+ * @dev:		this device
  * @chip_info:		chip model specific constants, available modes etc
  * @reg:		supply regulator
  * @vref_mv:		actual reference voltage used
+ * @cached_val:		store/retrieve values during power down
+ * @pwr_down_mode:	power down mode (1k, 100k or tristate)
+ * @pwr_down:		true if the device is in power down
+ * @lock:		lock to protect the data buffer during write ops
  */
 
 struct ad5446_state {
@@ -41,6 +48,7 @@ struct ad5446_state {
 	unsigned			cached_val;
 	unsigned			pwr_down_mode;
 	unsigned			pwr_down;
+	struct mutex			lock;
 };
 
 /**
@@ -92,7 +100,7 @@ static ssize_t ad5446_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5446_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", st->pwr_down);
+	return sysfs_emit(buf, "%d\n", st->pwr_down);
 }
 
 static ssize_t ad5446_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -106,11 +114,11 @@ static ssize_t ad5446_write_dac_powerdown(struct iio_dev *indio_dev,
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	st->pwr_down = powerdown;
 
 	if (st->pwr_down) {
@@ -121,7 +129,7 @@ static ssize_t ad5446_write_dac_powerdown(struct iio_dev *indio_dev,
 	}
 
 	ret = st->chip_info->write(st, val);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret ? ret : len;
 }
@@ -134,7 +142,7 @@ static const struct iio_chan_spec_ext_info ad5446_ext_info_powerdown[] = {
 		.shared = IIO_SEPARATE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5446_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5446_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5446_powerdown_mode_enum),
 	{ },
 };
 
@@ -170,7 +178,7 @@ static int ad5446_read_raw(struct iio_dev *indio_dev,
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		*val = st->cached_val;
+		*val = st->cached_val >> chan->scan_type.shift;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		*val = st->vref_mv;
@@ -195,11 +203,11 @@ static int ad5446_write_raw(struct iio_dev *indio_dev,
 			return -EINVAL;
 
 		val <<= chan->scan_type.shift;
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&st->lock);
 		st->cached_val = val;
 		if (!st->pwr_down)
 			ret = st->chip_info->write(st, val);
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&st->lock);
 		break;
 	default:
 		ret = -EINVAL;
@@ -246,14 +254,14 @@ static int ad5446_probe(struct device *dev, const char *name,
 	st->reg = reg;
 	st->dev = dev;
 
-	/* Establish that the iio_dev is a child of the device */
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &ad5446_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = &st->chip_info->channel;
 	indio_dev->num_channels = 1;
 
+	mutex_init(&st->lock);
+
 	st->pwr_down_mode = MODE_PWRDWN_1k;
 
 	if (st->chip_info->int_vref_mv)
@@ -275,7 +283,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int ad5446_remove(struct device *dev)
+static void ad5446_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ad5446_state *st = iio_priv(indio_dev);
@@ -283,8 +291,6 @@ static int ad5446_remove(struct device *dev)
 	iio_device_unregister(indio_dev);
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
-
-	return 0;
 }
 
 #if IS_ENABLED(CONFIG_SPI_MASTER)
@@ -302,14 +308,12 @@ static int ad5660_write(struct ad5446_state *st, unsigned val)
 	struct spi_device *spi = to_spi_device(st->dev);
 	uint8_t data[3];
 
-	data[0] = (val >> 16) & 0xFF;
-	data[1] = (val >> 8) & 0xFF;
-	data[2] = val & 0xFF;
+	put_unaligned_be24(val, &data[0]);
 
 	return spi_write(spi, data, sizeof(data));
 }
 
-/**
+/*
  * ad5446_supported_spi_device_ids:
  * The AD5620/40/60 parts are available in different fixed internal reference
  * voltage options. The actual part numbers may look differently
@@ -473,13 +477,11 @@ static const struct spi_device_id ad5446_spi_ids[] = {
 };
 MODULE_DEVICE_TABLE(spi, ad5446_spi_ids);
 
-#ifdef CONFIG_OF
 static const struct of_device_id ad5446_of_ids[] = {
 	{ .compatible = "ti,dac7512" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ad5446_of_ids);
-#endif
 
 static int ad5446_spi_probe(struct spi_device *spi)
 {
@@ -489,15 +491,15 @@ static int ad5446_spi_probe(struct spi_device *spi)
 		&ad5446_spi_chip_info[id->driver_data]);
 }
 
-static int ad5446_spi_remove(struct spi_device *spi)
+static void ad5446_spi_remove(struct spi_device *spi)
 {
-	return ad5446_remove(&spi->dev);
+	ad5446_remove(&spi->dev);
 }
 
 static struct spi_driver ad5446_spi_driver = {
 	.driver = {
 		.name	= "ad5446",
-		.of_match_table = of_match_ptr(ad5446_of_ids),
+		.of_match_table = ad5446_of_ids,
 	},
 	.probe		= ad5446_spi_probe,
 	.remove		= ad5446_spi_remove,
@@ -527,11 +529,18 @@ static int ad5622_write(struct ad5446_state *st, unsigned val)
 {
 	struct i2c_client *client = to_i2c_client(st->dev);
 	__be16 data = cpu_to_be16(val);
+	int ret;
+
+	ret = i2c_master_send(client, (char *)&data, sizeof(data));
+	if (ret < 0)
+		return ret;
+	if (ret != sizeof(data))
+		return -EIO;
 
-	return i2c_master_send(client, (char *)&data, sizeof(data));
+	return 0;
 }
 
-/**
+/*
  * ad5446_supported_i2c_device_ids:
  * The AD5620/40/60 parts are available in different fixed internal reference
  * voltage options. The actual part numbers may look differently
@@ -566,9 +575,9 @@ static int ad5446_i2c_probe(struct i2c_client *i2c,
 		&ad5446_i2c_chip_info[id->driver_data]);
 }
 
-static int ad5446_i2c_remove(struct i2c_client *i2c)
+static void ad5446_i2c_remove(struct i2c_client *i2c)
 {
-	return ad5446_remove(&i2c->dev);
+	ad5446_remove(&i2c->dev);
 }
 
 static const struct i2c_device_id ad5446_i2c_ids[] = {
diff --git a/drivers/iio/dac/ad5449.c b/drivers/iio/dac/ad5449.c
index fed3ebaccac4..4572d6f49275 100644
--- a/drivers/iio/dac/ad5449.c
+++ b/drivers/iio/dac/ad5449.c
@@ -56,20 +56,22 @@ struct ad5449_chip_info {
  * @has_sdo:		whether the SDO line is connected
  * @dac_cache:		Cache for the DAC values
  * @data:		spi transfer buffers
+ * @lock:		lock to protect the data buffer during SPI ops
  */
 struct ad5449 {
 	struct spi_device		*spi;
 	const struct ad5449_chip_info	*chip_info;
 	struct regulator_bulk_data	vref_reg[AD5449_MAX_VREFS];
+	struct mutex			lock;
 
 	bool has_sdo;
 	uint16_t dac_cache[AD5449_MAX_CHANNELS];
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	__be16 data[2] ____cacheline_aligned;
+	__be16 data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad5449_type {
@@ -87,10 +89,10 @@ static int ad5449_write(struct iio_dev *indio_dev, unsigned int addr,
 	struct ad5449 *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	st->data[0] = cpu_to_be16((addr << 12) | val);
 	ret = spi_write(st->spi, st->data, 2);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -112,7 +114,7 @@ static int ad5449_read(struct iio_dev *indio_dev, unsigned int addr,
 		},
 	};
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	st->data[0] = cpu_to_be16(addr << 12);
 	st->data[1] = cpu_to_be16(AD5449_CMD_NOOP);
 
@@ -123,7 +125,7 @@ static int ad5449_read(struct iio_dev *indio_dev, unsigned int addr,
 	*val = be16_to_cpu(st->data[1]);
 
 out_unlock:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 	return ret;
 }
 
@@ -295,13 +297,14 @@ static int ad5449_spi_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &ad5449_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
+	mutex_init(&st->lock);
+
 	if (st->chip_info->has_ctrl) {
 		unsigned int ctrl = 0x00;
 		if (pdata) {
@@ -327,7 +330,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int ad5449_spi_remove(struct spi_device *spi)
+static void ad5449_spi_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad5449 *st = iio_priv(indio_dev);
@@ -335,8 +338,6 @@ static int ad5449_spi_remove(struct spi_device *spi)
 	iio_device_unregister(indio_dev);
 
 	regulator_bulk_disable(st->chip_info->num_channels, st->vref_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5449_spi_ids[] = {
diff --git a/drivers/iio/dac/ad5504.c b/drivers/iio/dac/ad5504.c
index c64e6898ff20..e6c5be728bb2 100644
--- a/drivers/iio/dac/ad5504.c
+++ b/drivers/iio/dac/ad5504.c
@@ -39,12 +39,12 @@
 #define AD5504_DAC_PWRDN_3STATE		1
 
 /**
- * struct ad5446_state - driver instance specific data
+ * struct ad5504_state - driver instance specific data
  * @spi:			spi_device
  * @reg:		supply regulator
  * @vref_mv:		actual reference voltage used
- * @pwr_down_mask	power down mask
- * @pwr_down_mode	current power down mode
+ * @pwr_down_mask:	power down mask
+ * @pwr_down_mode:	current power down mode
  * @data:		transfer buffer
  */
 struct ad5504_state {
@@ -54,13 +54,12 @@ struct ad5504_state {
 	unsigned			pwr_down_mask;
 	unsigned			pwr_down_mode;
 
-	__be16				data[2] ____cacheline_aligned;
+	__be16				data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
-/**
+/*
  * ad5504_supported_device_ids:
  */
-
 enum ad5504_supported_device_ids {
 	ID_AD5504,
 	ID_AD5501,
@@ -171,8 +170,8 @@ static ssize_t ad5504_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5504_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n",
-			!(st->pwr_down_mask & (1 << chan->channel)));
+	return sysfs_emit(buf, "%d\n",
+			  !(st->pwr_down_mask & (1 << chan->channel)));
 }
 
 static ssize_t ad5504_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -183,14 +182,14 @@ static ssize_t ad5504_write_dac_powerdown(struct iio_dev *indio_dev,
 	int ret;
 	struct ad5504_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
 	if (pwr_down)
-		st->pwr_down_mask |= (1 << chan->channel);
-	else
 		st->pwr_down_mask &= ~(1 << chan->channel);
+	else
+		st->pwr_down_mask |= (1 << chan->channel);
 
 	ret = ad5504_spi_write(st, AD5504_ADDR_CTRL,
 				AD5504_DAC_PWRDWN_MODE(st->pwr_down_mode) |
@@ -242,7 +241,7 @@ static const struct iio_chan_spec_ext_info ad5504_ext_info[] = {
 	},
 	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
 		 &ad5504_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5504_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5504_powerdown_mode_enum),
 	{ },
 };
 
@@ -304,7 +303,6 @@ static int ad5504_probe(struct spi_device *spi)
 
 	st->reg = reg;
 	st->spi = spi;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(st->spi)->name;
 	indio_dev->info = &ad5504_info;
 	if (spi_get_device_id(st->spi)->driver_data == ID_AD5501)
@@ -338,7 +336,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int ad5504_remove(struct spi_device *spi)
+static void ad5504_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad5504_state *st = iio_priv(indio_dev);
@@ -347,8 +345,6 @@ static int ad5504_remove(struct spi_device *spi)
 
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5504_id[] = {
diff --git a/drivers/iio/dac/ad5592r-base.c b/drivers/iio/dac/ad5592r-base.c
index e2110113e884..7a9b5fc1e579 100644
--- a/drivers/iio/dac/ad5592r-base.c
+++ b/drivers/iio/dac/ad5592r-base.c
@@ -11,7 +11,6 @@
 #include <linux/iio/iio.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
 #include <linux/regulator/consumer.h>
 #include <linux/gpio/consumer.h>
 #include <linux/gpio/driver.h>
@@ -156,7 +155,6 @@ static void ad5592r_gpio_cleanup(struct ad5592r_state *st)
 static int ad5592r_reset(struct ad5592r_state *st)
 {
 	struct gpio_desc *gpio;
-	struct iio_dev *iio_dev = iio_priv_to_dev(st);
 
 	gpio = devm_gpiod_get_optional(st->dev, "reset", GPIOD_OUT_LOW);
 	if (IS_ERR(gpio))
@@ -166,10 +164,10 @@ static int ad5592r_reset(struct ad5592r_state *st)
 		udelay(1);
 		gpiod_set_value(gpio, 1);
 	} else {
-		mutex_lock(&iio_dev->mlock);
+		mutex_lock(&st->lock);
 		/* Writing this magic value resets the device */
 		st->ops->reg_write(st, AD5592R_REG_RESET, 0xdac);
-		mutex_unlock(&iio_dev->mlock);
+		mutex_unlock(&st->lock);
 	}
 
 	udelay(250);
@@ -197,7 +195,6 @@ static int ad5592r_set_channel_modes(struct ad5592r_state *st)
 	const struct ad5592r_rw_ops *ops = st->ops;
 	int ret;
 	unsigned i;
-	struct iio_dev *iio_dev = iio_priv_to_dev(st);
 	u8 pulldown = 0, tristate = 0, dac = 0, adc = 0;
 	u16 read_back;
 
@@ -222,7 +219,6 @@ static int ad5592r_set_channel_modes(struct ad5592r_state *st)
 			break;
 
 		case CH_MODE_UNUSED:
-			/* fall-through */
 		default:
 			switch (st->channel_offstate[i]) {
 			case CH_OFFSTATE_OUT_TRISTATE:
@@ -239,7 +235,6 @@ static int ad5592r_set_channel_modes(struct ad5592r_state *st)
 				break;
 
 			case CH_OFFSTATE_PULLDOWN:
-				/* fall-through */
 			default:
 				pulldown |= BIT(i);
 				break;
@@ -247,7 +242,7 @@ static int ad5592r_set_channel_modes(struct ad5592r_state *st)
 		}
 	}
 
-	mutex_lock(&iio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	/* Pull down unused pins to GND */
 	ret = ops->reg_write(st, AD5592R_REG_PULLDOWN, pulldown);
@@ -285,7 +280,7 @@ static int ad5592r_set_channel_modes(struct ad5592r_state *st)
 		ret = -EIO;
 
 err_unlock:
-	mutex_unlock(&iio_dev->mlock);
+	mutex_unlock(&st->lock);
 	return ret;
 }
 
@@ -314,11 +309,11 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev,
 		if (!chan->output)
 			return -EINVAL;
 
-		mutex_lock(&iio_dev->mlock);
+		mutex_lock(&st->lock);
 		ret = st->ops->write_dac(st, chan->channel, val);
 		if (!ret)
 			st->cached_dac[chan->channel] = val;
-		mutex_unlock(&iio_dev->mlock);
+		mutex_unlock(&st->lock);
 		return ret;
 	case IIO_CHAN_INFO_SCALE:
 		if (chan->type == IIO_VOLTAGE) {
@@ -333,12 +328,12 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev,
 			else
 				return -EINVAL;
 
-			mutex_lock(&iio_dev->mlock);
+			mutex_lock(&st->lock);
 
 			ret = st->ops->reg_read(st, AD5592R_REG_CTRL,
 						&st->cached_gp_ctrl);
 			if (ret < 0) {
-				mutex_unlock(&iio_dev->mlock);
+				mutex_unlock(&st->lock);
 				return ret;
 			}
 
@@ -360,7 +355,7 @@ static int ad5592r_write_raw(struct iio_dev *iio_dev,
 
 			ret = st->ops->reg_write(st, AD5592R_REG_CTRL,
 						 st->cached_gp_ctrl);
-			mutex_unlock(&iio_dev->mlock);
+			mutex_unlock(&st->lock);
 
 			return ret;
 		}
@@ -378,36 +373,36 @@ static int ad5592r_read_raw(struct iio_dev *iio_dev,
 {
 	struct ad5592r_state *st = iio_priv(iio_dev);
 	u16 read_val;
-	int ret;
+	int ret, mult;
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&iio_dev->mlock);
-
 		if (!chan->output) {
+			mutex_lock(&st->lock);
 			ret = st->ops->read_adc(st, chan->channel, &read_val);
+			mutex_unlock(&st->lock);
 			if (ret)
-				goto unlock;
+				return ret;
 
 			if ((read_val >> 12 & 0x7) != (chan->channel & 0x7)) {
 				dev_err(st->dev, "Error while reading channel %u\n",
 						chan->channel);
-				ret = -EIO;
-				goto unlock;
+				return -EIO;
 			}
 
 			read_val &= GENMASK(11, 0);
 
 		} else {
+			mutex_lock(&st->lock);
 			read_val = st->cached_dac[chan->channel];
+			mutex_unlock(&st->lock);
 		}
 
 		dev_dbg(st->dev, "Channel %u read: 0x%04hX\n",
 				chan->channel, read_val);
 
 		*val = (int) read_val;
-		ret = IIO_VAL_INT;
-		break;
+		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_SCALE:
 		*val = ad5592r_get_vref(st);
 
@@ -415,43 +410,41 @@ static int ad5592r_read_raw(struct iio_dev *iio_dev,
 			s64 tmp = *val * (3767897513LL / 25LL);
 			*val = div_s64_rem(tmp, 1000000000LL, val2);
 
-			ret = IIO_VAL_INT_PLUS_MICRO;
-		} else {
-			int mult;
+			return IIO_VAL_INT_PLUS_MICRO;
+		}
 
-			mutex_lock(&iio_dev->mlock);
+		mutex_lock(&st->lock);
 
-			if (chan->output)
-				mult = !!(st->cached_gp_ctrl &
-					AD5592R_REG_CTRL_DAC_RANGE);
-			else
-				mult = !!(st->cached_gp_ctrl &
-					AD5592R_REG_CTRL_ADC_RANGE);
+		if (chan->output)
+			mult = !!(st->cached_gp_ctrl &
+				AD5592R_REG_CTRL_DAC_RANGE);
+		else
+			mult = !!(st->cached_gp_ctrl &
+				AD5592R_REG_CTRL_ADC_RANGE);
 
-			*val *= ++mult;
+		mutex_unlock(&st->lock);
 
-			*val2 = chan->scan_type.realbits;
-			ret = IIO_VAL_FRACTIONAL_LOG2;
-		}
-		break;
+		*val *= ++mult;
+
+		*val2 = chan->scan_type.realbits;
+
+		return IIO_VAL_FRACTIONAL_LOG2;
 	case IIO_CHAN_INFO_OFFSET:
 		ret = ad5592r_get_vref(st);
 
-		mutex_lock(&iio_dev->mlock);
+		mutex_lock(&st->lock);
 
 		if (st->cached_gp_ctrl & AD5592R_REG_CTRL_ADC_RANGE)
 			*val = (-34365 * 25) / ret;
 		else
 			*val = (-75365 * 25) / ret;
-		ret =  IIO_VAL_INT;
-		break;
+
+		mutex_unlock(&st->lock);
+
+		return IIO_VAL_INT;
 	default:
-		ret = -EINVAL;
+		return -EINVAL;
 	}
-
-unlock:
-	mutex_unlock(&iio_dev->mlock);
-	return ret;
 }
 
 static int ad5592r_write_raw_get_fmt(struct iio_dev *indio_dev,
@@ -486,11 +479,11 @@ static ssize_t ad5592r_show_scale_available(struct iio_dev *iio_dev,
 		st->scale_avail[1][0], st->scale_avail[1][1]);
 }
 
-static struct iio_chan_spec_ext_info ad5592r_ext_info[] = {
+static const struct iio_chan_spec_ext_info ad5592r_ext_info[] = {
 	{
 	 .name = "scale_available",
 	 .read = ad5592r_show_scale_available,
-	 .shared = true,
+	 .shared = IIO_SHARED_BY_TYPE,
 	 },
 	{},
 };
@@ -510,11 +503,11 @@ static void ad5592r_setup_channel(struct iio_dev *iio_dev,
 	chan->ext_info = ad5592r_ext_info;
 }
 
-static int ad5592r_alloc_channels(struct ad5592r_state *st)
+static int ad5592r_alloc_channels(struct iio_dev *iio_dev)
 {
+	struct ad5592r_state *st = iio_priv(iio_dev);
 	unsigned i, curr_channel = 0,
 		 num_channels = st->num_channels;
-	struct iio_dev *iio_dev = iio_priv_to_dev(st);
 	struct iio_chan_spec *channels;
 	struct fwnode_handle *child;
 	u32 reg, tmp;
@@ -529,7 +522,7 @@ static int ad5592r_alloc_channels(struct ad5592r_state *st)
 		if (!ret)
 			st->channel_modes[reg] = tmp;
 
-		fwnode_property_read_u32(child, "adi,off-state", &tmp);
+		ret = fwnode_property_read_u32(child, "adi,off-state", &tmp);
 		if (!ret)
 			st->channel_offstate[reg] = tmp;
 	}
@@ -610,7 +603,7 @@ int ad5592r_probe(struct device *dev, const char *name,
 
 	st->reg = devm_regulator_get_optional(dev, "vref");
 	if (IS_ERR(st->reg)) {
-		if ((PTR_ERR(st->reg) != -ENODEV) && dev->of_node)
+		if ((PTR_ERR(st->reg) != -ENODEV) && dev_fwnode(dev))
 			return PTR_ERR(st->reg);
 
 		st->reg = NULL;
@@ -620,11 +613,12 @@ int ad5592r_probe(struct device *dev, const char *name,
 			return ret;
 	}
 
-	iio_dev->dev.parent = dev;
 	iio_dev->name = name;
 	iio_dev->info = &ad5592r_info;
 	iio_dev->modes = INDIO_DIRECT_MODE;
 
+	mutex_init(&st->lock);
+
 	ad5592r_init_scales(st, ad5592r_get_vref(st));
 
 	ret = ad5592r_reset(st);
@@ -636,7 +630,7 @@ int ad5592r_probe(struct device *dev, const char *name,
 	if (ret)
 		goto error_disable_reg;
 
-	ret = ad5592r_alloc_channels(st);
+	ret = ad5592r_alloc_channels(iio_dev);
 	if (ret)
 		goto error_disable_reg;
 
@@ -666,9 +660,9 @@ error_disable_reg:
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ad5592r_probe);
+EXPORT_SYMBOL_NS_GPL(ad5592r_probe, IIO_AD5592R);
 
-int ad5592r_remove(struct device *dev)
+void ad5592r_remove(struct device *dev)
 {
 	struct iio_dev *iio_dev = dev_get_drvdata(dev);
 	struct ad5592r_state *st = iio_priv(iio_dev);
@@ -679,10 +673,8 @@ int ad5592r_remove(struct device *dev)
 
 	if (st->reg)
 		regulator_disable(st->reg);
-
-	return 0;
 }
-EXPORT_SYMBOL_GPL(ad5592r_remove);
+EXPORT_SYMBOL_NS_GPL(ad5592r_remove, IIO_AD5592R);
 
 MODULE_AUTHOR("Paul Cercueil <paul.cercueil@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD5592R multi-channel converters");
diff --git a/drivers/iio/dac/ad5592r-base.h b/drivers/iio/dac/ad5592r-base.h
index 4774e4cd9c11..cc7be426cbc8 100644
--- a/drivers/iio/dac/ad5592r-base.h
+++ b/drivers/iio/dac/ad5592r-base.h
@@ -14,6 +14,8 @@
 #include <linux/mutex.h>
 #include <linux/gpio/driver.h>
 
+#include <linux/iio/iio.h>
+
 struct device;
 struct ad5592r_state;
 
@@ -52,6 +54,7 @@ struct ad5592r_state {
 	struct regulator *reg;
 	struct gpio_chip gpiochip;
 	struct mutex gpio_lock;	/* Protect cached gpio_out, gpio_val, etc. */
+	struct mutex lock;
 	unsigned int num_channels;
 	const struct ad5592r_rw_ops *ops;
 	int scale_avail[2][2];
@@ -64,12 +67,12 @@ struct ad5592r_state {
 	u8 gpio_in;
 	u8 gpio_val;
 
-	__be16 spi_msg ____cacheline_aligned;
+	__be16 spi_msg __aligned(IIO_DMA_MINALIGN);
 	__be16 spi_msg_nop;
 };
 
 int ad5592r_probe(struct device *dev, const char *name,
 		const struct ad5592r_rw_ops *ops);
-int ad5592r_remove(struct device *dev);
+void ad5592r_remove(struct device *dev);
 
 #endif /* __DRIVERS_IIO_DAC_AD5592R_BASE_H__ */
diff --git a/drivers/iio/dac/ad5592r.c b/drivers/iio/dac/ad5592r.c
index 34ba059a77da..32d950bbb1ca 100644
--- a/drivers/iio/dac/ad5592r.c
+++ b/drivers/iio/dac/ad5592r.c
@@ -10,9 +10,8 @@
 
 #include <linux/bitops.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
-#include <linux/acpi.h>
 
 #define AD5592R_GPIO_READBACK_EN	BIT(10)
 #define AD5592R_LDAC_READBACK_EN	BIT(6)
@@ -98,7 +97,7 @@ static int ad5592r_reg_read(struct ad5592r_state *st, u8 reg, u16 *value)
 	return 0;
 }
 
-static int ad5593r_gpio_read(struct ad5592r_state *st, u8 *value)
+static int ad5592r_gpio_read(struct ad5592r_state *st, u8 *value)
 {
 	int ret;
 
@@ -121,7 +120,7 @@ static const struct ad5592r_rw_ops ad5592r_rw_ops = {
 	.read_adc = ad5592r_read_adc,
 	.reg_write = ad5592r_reg_write,
 	.reg_read = ad5592r_reg_read,
-	.gpio_read = ad5593r_gpio_read,
+	.gpio_read = ad5592r_gpio_read,
 };
 
 static int ad5592r_spi_probe(struct spi_device *spi)
@@ -131,9 +130,9 @@ static int ad5592r_spi_probe(struct spi_device *spi)
 	return ad5592r_probe(&spi->dev, id->name, &ad5592r_rw_ops);
 }
 
-static int ad5592r_spi_remove(struct spi_device *spi)
+static void ad5592r_spi_remove(struct spi_device *spi)
 {
-	return ad5592r_remove(&spi->dev);
+	ad5592r_remove(&spi->dev);
 }
 
 static const struct spi_device_id ad5592r_spi_ids[] = {
@@ -157,8 +156,8 @@ MODULE_DEVICE_TABLE(acpi, ad5592r_acpi_match);
 static struct spi_driver ad5592r_spi_driver = {
 	.driver = {
 		.name = "ad5592r",
-		.of_match_table = of_match_ptr(ad5592r_of_match),
-		.acpi_match_table = ACPI_PTR(ad5592r_acpi_match),
+		.of_match_table = ad5592r_of_match,
+		.acpi_match_table = ad5592r_acpi_match,
 	},
 	.probe = ad5592r_spi_probe,
 	.remove = ad5592r_spi_remove,
@@ -169,3 +168,4 @@ module_spi_driver(ad5592r_spi_driver);
 MODULE_AUTHOR("Paul Cercueil <paul.cercueil@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD5592R multi-channel converters");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD5592R);
diff --git a/drivers/iio/dac/ad5593r.c b/drivers/iio/dac/ad5593r.c
index 44ea3b8117d0..8e5e014e0c28 100644
--- a/drivers/iio/dac/ad5593r.c
+++ b/drivers/iio/dac/ad5593r.c
@@ -11,8 +11,9 @@
 #include <linux/bitops.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/acpi.h>
+#include <linux/mod_devicetable.h>
+
+#include <asm/unaligned.h>
 
 #define AD5593R_MODE_CONF		(0 << 4)
 #define AD5593R_MODE_DAC_WRITE		(1 << 4)
@@ -21,6 +22,24 @@
 #define AD5593R_MODE_GPIO_READBACK	(6 << 4)
 #define AD5593R_MODE_REG_READBACK	(7 << 4)
 
+static int ad5593r_read_word(struct i2c_client *i2c, u8 reg, u16 *value)
+{
+	int ret;
+	u8 buf[2];
+
+	ret = i2c_smbus_write_byte(i2c, reg);
+	if (ret < 0)
+		return ret;
+
+	ret = i2c_master_recv(i2c, buf, sizeof(buf));
+	if (ret < 0)
+		return ret;
+
+	*value = get_unaligned_be16(buf);
+
+	return 0;
+}
+
 static int ad5593r_write_dac(struct ad5592r_state *st, unsigned chan, u16 value)
 {
 	struct i2c_client *i2c = to_i2c_client(st->dev);
@@ -39,13 +58,7 @@ static int ad5593r_read_adc(struct ad5592r_state *st, unsigned chan, u16 *value)
 	if (val < 0)
 		return (int) val;
 
-	val = i2c_smbus_read_word_swapped(i2c, AD5593R_MODE_ADC_READBACK);
-	if (val < 0)
-		return (int) val;
-
-	*value = (u16) val;
-
-	return 0;
+	return ad5593r_read_word(i2c, AD5593R_MODE_ADC_READBACK, value);
 }
 
 static int ad5593r_reg_write(struct ad5592r_state *st, u8 reg, u16 value)
@@ -59,25 +72,19 @@ static int ad5593r_reg_write(struct ad5592r_state *st, u8 reg, u16 value)
 static int ad5593r_reg_read(struct ad5592r_state *st, u8 reg, u16 *value)
 {
 	struct i2c_client *i2c = to_i2c_client(st->dev);
-	s32 val;
-
-	val = i2c_smbus_read_word_swapped(i2c, AD5593R_MODE_REG_READBACK | reg);
-	if (val < 0)
-		return (int) val;
 
-	*value = (u16) val;
-
-	return 0;
+	return ad5593r_read_word(i2c, AD5593R_MODE_REG_READBACK | reg, value);
 }
 
 static int ad5593r_gpio_read(struct ad5592r_state *st, u8 *value)
 {
 	struct i2c_client *i2c = to_i2c_client(st->dev);
-	s32 val;
+	u16 val;
+	int ret;
 
-	val = i2c_smbus_read_word_swapped(i2c, AD5593R_MODE_GPIO_READBACK);
-	if (val < 0)
-		return (int) val;
+	ret = ad5593r_read_word(i2c, AD5593R_MODE_GPIO_READBACK, &val);
+	if (ret)
+		return ret;
 
 	*value = (u8) val;
 
@@ -95,12 +102,16 @@ static const struct ad5592r_rw_ops ad5593r_rw_ops = {
 static int ad5593r_i2c_probe(struct i2c_client *i2c,
 		const struct i2c_device_id *id)
 {
+	if (!i2c_check_functionality(i2c->adapter,
+				     I2C_FUNC_SMBUS_BYTE | I2C_FUNC_I2C))
+		return -EOPNOTSUPP;
+
 	return ad5592r_probe(&i2c->dev, id->name, &ad5593r_rw_ops);
 }
 
-static int ad5593r_i2c_remove(struct i2c_client *i2c)
+static void ad5593r_i2c_remove(struct i2c_client *i2c)
 {
-	return ad5592r_remove(&i2c->dev);
+	ad5592r_remove(&i2c->dev);
 }
 
 static const struct i2c_device_id ad5593r_i2c_ids[] = {
@@ -124,8 +135,8 @@ MODULE_DEVICE_TABLE(acpi, ad5593r_acpi_match);
 static struct i2c_driver ad5593r_driver = {
 	.driver = {
 		.name = "ad5593r",
-		.of_match_table = of_match_ptr(ad5593r_of_match),
-		.acpi_match_table = ACPI_PTR(ad5593r_acpi_match),
+		.of_match_table = ad5593r_of_match,
+		.acpi_match_table = ad5593r_acpi_match,
 	},
 	.probe = ad5593r_i2c_probe,
 	.remove = ad5593r_i2c_remove,
@@ -134,5 +145,6 @@ static struct i2c_driver ad5593r_driver = {
 module_i2c_driver(ad5593r_driver);
 
 MODULE_AUTHOR("Paul Cercueil <paul.cercueil@analog.com>");
-MODULE_DESCRIPTION("Analog Devices AD5592R multi-channel converters");
+MODULE_DESCRIPTION("Analog Devices AD5593R multi-channel converters");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD5592R);
diff --git a/drivers/iio/dac/ad5624r_spi.c b/drivers/iio/dac/ad5624r_spi.c
index e6c022e1dc1c..7e6f824de299 100644
--- a/drivers/iio/dac/ad5624r_spi.c
+++ b/drivers/iio/dac/ad5624r_spi.c
@@ -18,6 +18,8 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #include "ad5624r.h"
 
 static int ad5624r_spi_write(struct spi_device *spi,
@@ -35,11 +37,9 @@ static int ad5624r_spi_write(struct spi_device *spi,
 	 * for the AD5664R, AD5644R, and AD5624R, respectively.
 	 */
 	data = (0 << 22) | (cmd << 19) | (addr << 16) | (val << shift);
-	msg[0] = data >> 16;
-	msg[1] = data >> 8;
-	msg[2] = data;
+	put_unaligned_be24(data, &msg[0]);
 
-	return spi_write(spi, msg, 3);
+	return spi_write(spi, msg, sizeof(msg));
 }
 
 static int ad5624r_read_raw(struct iio_dev *indio_dev,
@@ -117,8 +117,8 @@ static ssize_t ad5624r_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5624r_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n",
-			!!(st->pwr_down_mask & (1 << chan->channel)));
+	return sysfs_emit(buf, "%d\n",
+			  !!(st->pwr_down_mask & (1 << chan->channel)));
 }
 
 static ssize_t ad5624r_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -129,7 +129,7 @@ static ssize_t ad5624r_write_dac_powerdown(struct iio_dev *indio_dev,
 	int ret;
 	struct ad5624r_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -159,7 +159,7 @@ static const struct iio_chan_spec_ext_info ad5624r_ext_info[] = {
 	},
 	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
 		 &ad5624r_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5624r_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5624r_powerdown_mode_enum),
 	{ },
 };
 
@@ -229,7 +229,7 @@ static int ad5624r_probe(struct spi_device *spi)
 	if (!indio_dev)
 		return -ENOMEM;
 	st = iio_priv(indio_dev);
-	st->reg = devm_regulator_get(&spi->dev, "vcc");
+	st->reg = devm_regulator_get_optional(&spi->dev, "vref");
 	if (!IS_ERR(st->reg)) {
 		ret = regulator_enable(st->reg);
 		if (ret)
@@ -240,6 +240,22 @@ static int ad5624r_probe(struct spi_device *spi)
 			goto error_disable_reg;
 
 		voltage_uv = ret;
+	} else {
+		if (PTR_ERR(st->reg) != -ENODEV)
+			return PTR_ERR(st->reg);
+		/* Backwards compatibility. This naming is not correct */
+		st->reg = devm_regulator_get_optional(&spi->dev, "vcc");
+		if (!IS_ERR(st->reg)) {
+			ret = regulator_enable(st->reg);
+			if (ret)
+				return ret;
+
+			ret = regulator_get_voltage(st->reg);
+			if (ret < 0)
+				goto error_disable_reg;
+
+			voltage_uv = ret;
+		}
 	}
 
 	spi_set_drvdata(spi, indio_dev);
@@ -253,7 +269,6 @@ static int ad5624r_probe(struct spi_device *spi)
 
 	st->us = spi;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad5624r_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -278,7 +293,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int ad5624r_remove(struct spi_device *spi)
+static void ad5624r_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad5624r_state *st = iio_priv(indio_dev);
@@ -286,8 +301,6 @@ static int ad5624r_remove(struct spi_device *spi)
 	iio_device_unregister(indio_dev);
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5624r_id[] = {
diff --git a/drivers/iio/dac/ad5686-spi.c b/drivers/iio/dac/ad5686-spi.c
index 0188ded5137c..8ba2ea70451a 100644
--- a/drivers/iio/dac/ad5686-spi.c
+++ b/drivers/iio/dac/ad5686-spi.c
@@ -95,9 +95,9 @@ static int ad5686_spi_probe(struct spi_device *spi)
 			    ad5686_spi_write, ad5686_spi_read);
 }
 
-static int ad5686_spi_remove(struct spi_device *spi)
+static void ad5686_spi_remove(struct spi_device *spi)
 {
-	return ad5686_remove(&spi->dev);
+	ad5686_remove(&spi->dev);
 }
 
 static const struct spi_device_id ad5686_spi_id[] = {
@@ -135,3 +135,4 @@ module_spi_driver(ad5686_spi_driver);
 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD5686);
diff --git a/drivers/iio/dac/ad5686.c b/drivers/iio/dac/ad5686.c
index e06b29c565b9..15361d8bbf94 100644
--- a/drivers/iio/dac/ad5686.c
+++ b/drivers/iio/dac/ad5686.c
@@ -57,7 +57,7 @@ static ssize_t ad5686_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5686_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", !!(st->pwr_down_mask &
+	return sysfs_emit(buf, "%d\n", !!(st->pwr_down_mask &
 				       (0x3 << (chan->channel * 2))));
 }
 
@@ -73,7 +73,7 @@ static ssize_t ad5686_write_dac_powerdown(struct iio_dev *indio_dev,
 	unsigned int val, ref_bit_msk;
 	u8 shift, address = 0;
 
-	ret = strtobool(buf, &readin);
+	ret = kstrtobool(buf, &readin);
 	if (ret)
 		return ret;
 
@@ -127,9 +127,9 @@ static int ad5686_read_raw(struct iio_dev *indio_dev,
 
 	switch (m) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&st->lock);
 		ret = st->read(st, chan->address);
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&st->lock);
 		if (ret < 0)
 			return ret;
 		*val = (ret >> chan->scan_type.shift) &
@@ -157,12 +157,12 @@ static int ad5686_write_raw(struct iio_dev *indio_dev,
 		if (val > (1 << chan->scan_type.realbits) || val < 0)
 			return -EINVAL;
 
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&st->lock);
 		ret = st->write(st,
 				AD5686_CMD_WRITE_INPUT_N_UPDATE_N,
 				chan->address,
 				val << chan->scan_type.shift);
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&st->lock);
 		break;
 	default:
 		ret = -EINVAL;
@@ -184,7 +184,7 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
 		.shared = IIO_SEPARATE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &ad5686_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5686_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5686_powerdown_mode_enum),
 	{ },
 };
 
@@ -206,12 +206,18 @@ static const struct iio_chan_spec_ext_info ad5686_ext_info[] = {
 }
 
 #define DECLARE_AD5693_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 0, bits, _shift),		\
 }
 
+#define DECLARE_AD5338_CHANNELS(name, bits, _shift)		\
+static const struct iio_chan_spec name[] = {			\
+		AD5868_CHANNEL(0, 1, bits, _shift),		\
+		AD5868_CHANNEL(1, 8, bits, _shift),		\
+}
+
 #define DECLARE_AD5686_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 1, bits, _shift),		\
 		AD5868_CHANNEL(1, 2, bits, _shift),		\
 		AD5868_CHANNEL(2, 4, bits, _shift),		\
@@ -219,7 +225,7 @@ static struct iio_chan_spec name[] = {				\
 }
 
 #define DECLARE_AD5676_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 0, bits, _shift),		\
 		AD5868_CHANNEL(1, 1, bits, _shift),		\
 		AD5868_CHANNEL(2, 2, bits, _shift),		\
@@ -231,7 +237,7 @@ static struct iio_chan_spec name[] = {				\
 }
 
 #define DECLARE_AD5679_CHANNELS(name, bits, _shift)		\
-static struct iio_chan_spec name[] = {				\
+static const struct iio_chan_spec name[] = {			\
 		AD5868_CHANNEL(0, 0, bits, _shift),		\
 		AD5868_CHANNEL(1, 1, bits, _shift),		\
 		AD5868_CHANNEL(2, 2, bits, _shift),		\
@@ -252,6 +258,7 @@ static struct iio_chan_spec name[] = {				\
 
 DECLARE_AD5693_CHANNELS(ad5310r_channels, 10, 2);
 DECLARE_AD5693_CHANNELS(ad5311r_channels, 10, 6);
+DECLARE_AD5338_CHANNELS(ad5338r_channels, 10, 6);
 DECLARE_AD5676_CHANNELS(ad5672_channels, 12, 4);
 DECLARE_AD5679_CHANNELS(ad5674r_channels, 12, 4);
 DECLARE_AD5676_CHANNELS(ad5676_channels, 16, 0);
@@ -276,6 +283,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
 		.num_channels = 1,
 		.regmap_type = AD5693_REGMAP,
 	},
+	[ID_AD5338R] = {
+		.channels = ad5338r_channels,
+		.int_vref_mv = 2500,
+		.num_channels = 2,
+		.regmap_type = AD5686_REGMAP,
+	},
 	[ID_AD5671R] = {
 		.channels = ad5672_channels,
 		.int_vref_mv = 2500,
@@ -288,6 +301,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
 		.num_channels = 8,
 		.regmap_type = AD5686_REGMAP,
 	},
+	[ID_AD5673R] = {
+		.channels = ad5674r_channels,
+		.int_vref_mv = 2500,
+		.num_channels = 16,
+		.regmap_type = AD5686_REGMAP,
+	},
 	[ID_AD5674R] = {
 		.channels = ad5674r_channels,
 		.int_vref_mv = 2500,
@@ -311,6 +330,12 @@ static const struct ad5686_chip_info ad5686_chip_info_tbl[] = {
 		.num_channels = 8,
 		.regmap_type = AD5686_REGMAP,
 	},
+	[ID_AD5677R] = {
+		.channels = ad5679r_channels,
+		.int_vref_mv = 2500,
+		.num_channels = 16,
+		.regmap_type = AD5686_REGMAP,
+	},
 	[ID_AD5679R] = {
 		.channels = ad5679r_channels,
 		.int_vref_mv = 2500,
@@ -461,13 +486,14 @@ int ad5686_probe(struct device *dev,
 	for (i = 0; i < st->chip_info->num_channels; i++)
 		st->pwr_down_mode |= (0x01 << (i * 2));
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &ad5686_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
+	mutex_init(&st->lock);
+
 	switch (st->chip_info->regmap_type) {
 	case AD5310_REGMAP:
 		cmd = AD5686_CMD_CONTROL_REG;
@@ -510,9 +536,9 @@ error_disable_reg:
 		regulator_disable(st->reg);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(ad5686_probe);
+EXPORT_SYMBOL_NS_GPL(ad5686_probe, IIO_AD5686);
 
-int ad5686_remove(struct device *dev)
+void ad5686_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ad5686_state *st = iio_priv(indio_dev);
@@ -520,10 +546,8 @@ int ad5686_remove(struct device *dev)
 	iio_device_unregister(indio_dev);
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
-
-	return 0;
 }
-EXPORT_SYMBOL_GPL(ad5686_remove);
+EXPORT_SYMBOL_NS_GPL(ad5686_remove, IIO_AD5686);
 
 MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD5686/85/84 DAC");
diff --git a/drivers/iio/dac/ad5686.h b/drivers/iio/dac/ad5686.h
index 70a779939ddb..b7ade3a6b9b6 100644
--- a/drivers/iio/dac/ad5686.h
+++ b/drivers/iio/dac/ad5686.h
@@ -13,6 +13,8 @@
 #include <linux/mutex.h>
 #include <linux/kernel.h>
 
+#include <linux/iio/iio.h>
+
 #define AD5310_CMD(x)				((x) << 12)
 
 #define AD5683_DATA(x)				((x) << 4)
@@ -52,12 +54,15 @@
 enum ad5686_supported_device_ids {
 	ID_AD5310R,
 	ID_AD5311R,
+	ID_AD5338R,
 	ID_AD5671R,
 	ID_AD5672R,
+	ID_AD5673R,
 	ID_AD5674R,
 	ID_AD5675R,
 	ID_AD5676,
 	ID_AD5676R,
+	ID_AD5677R,
 	ID_AD5679R,
 	ID_AD5681R,
 	ID_AD5682R,
@@ -104,7 +109,7 @@ typedef int (*ad5686_read_func)(struct ad5686_state *st, u8 addr);
 struct ad5686_chip_info {
 	u16				int_vref_mv;
 	unsigned int			num_channels;
-	struct iio_chan_spec		*channels;
+	const struct iio_chan_spec	*channels;
 	enum ad5686_regmap_type		regmap_type;
 };
 
@@ -117,6 +122,7 @@ struct ad5686_chip_info {
  * @pwr_down_mask:	power down mask
  * @pwr_down_mode:	current power down mode
  * @use_internal_vref:	set to true if the internal reference voltage is used
+ * @lock		lock to protect the data buffer during regmap ops
  * @data:		spi transfer buffers
  */
 
@@ -130,9 +136,10 @@ struct ad5686_state {
 	ad5686_write_func		write;
 	ad5686_read_func		read;
 	bool				use_internal_vref;
+	struct mutex			lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 
@@ -140,7 +147,7 @@ struct ad5686_state {
 		__be32 d32;
 		__be16 d16;
 		u8 d8[4];
-	} data[3] ____cacheline_aligned;
+	} data[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 
@@ -149,7 +156,7 @@ int ad5686_probe(struct device *dev,
 		 const char *name, ad5686_write_func write,
 		 ad5686_read_func read);
 
-int ad5686_remove(struct device *dev);
+void ad5686_remove(struct device *dev);
 
 
 #endif /* __DRIVERS_IIO_DAC_AD5686_H__ */
diff --git a/drivers/iio/dac/ad5696-i2c.c b/drivers/iio/dac/ad5696-i2c.c
index ccf794caef43..aa36cbf0137c 100644
--- a/drivers/iio/dac/ad5696-i2c.c
+++ b/drivers/iio/dac/ad5696-i2c.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0
 /*
- * AD5671R, AD5675R, AD5691R, AD5692R, AD5693, AD5693R,
- * AD5694, AD5694R, AD5695R, AD5696, AD5696R
+ * AD5338R, AD5671R, AD5673R, AD5675R, AD5677R, AD5691R, AD5692R, AD5693,
+ * AD5693R, AD5694, AD5694R, AD5695R, AD5696, AD5696R
  * Digital to analog converters driver
  *
  * Copyright 2018 Analog Devices Inc.
@@ -65,15 +65,18 @@ static int ad5686_i2c_probe(struct i2c_client *i2c,
 			    ad5686_i2c_write, ad5686_i2c_read);
 }
 
-static int ad5686_i2c_remove(struct i2c_client *i2c)
+static void ad5686_i2c_remove(struct i2c_client *i2c)
 {
-	return ad5686_remove(&i2c->dev);
+	ad5686_remove(&i2c->dev);
 }
 
 static const struct i2c_device_id ad5686_i2c_id[] = {
 	{"ad5311r", ID_AD5311R},
+	{"ad5338r", ID_AD5338R},
 	{"ad5671r", ID_AD5671R},
+	{"ad5673r", ID_AD5673R},
 	{"ad5675r", ID_AD5675R},
+	{"ad5677r", ID_AD5677R},
 	{"ad5691r", ID_AD5691R},
 	{"ad5692r", ID_AD5692R},
 	{"ad5693", ID_AD5693},
@@ -87,9 +90,28 @@ static const struct i2c_device_id ad5686_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, ad5686_i2c_id);
 
+static const struct of_device_id ad5686_of_match[] = {
+	{ .compatible = "adi,ad5311r" },
+	{ .compatible = "adi,ad5338r" },
+	{ .compatible = "adi,ad5671r" },
+	{ .compatible = "adi,ad5675r" },
+	{ .compatible = "adi,ad5691r" },
+	{ .compatible = "adi,ad5692r" },
+	{ .compatible = "adi,ad5693" },
+	{ .compatible = "adi,ad5693r" },
+	{ .compatible = "adi,ad5694" },
+	{ .compatible = "adi,ad5694r" },
+	{ .compatible = "adi,ad5695r" },
+	{ .compatible = "adi,ad5696" },
+	{ .compatible = "adi,ad5696r" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad5686_of_match);
+
 static struct i2c_driver ad5686_i2c_driver = {
 	.driver = {
 		.name = "ad5696",
+		.of_match_table = ad5686_of_match,
 	},
 	.probe = ad5686_i2c_probe,
 	.remove = ad5686_i2c_remove,
@@ -101,3 +123,4 @@ module_i2c_driver(ad5686_i2c_driver);
 MODULE_AUTHOR("Stefan Popa <stefan.popa@analog.com>");
 MODULE_DESCRIPTION("Analog Devices AD5686 and similar multi-channel DACs");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_AD5686);
diff --git a/drivers/iio/dac/ad5755.c b/drivers/iio/dac/ad5755.c
index b9175fb4c8ab..beadfa938d2d 100644
--- a/drivers/iio/dac/ad5755.c
+++ b/drivers/iio/dac/ad5755.c
@@ -13,10 +13,10 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/delay.h>
-#include <linux/of.h>
+#include <linux/property.h>
+
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
-#include <linux/platform_data/ad5755.h>
 
 #define AD5755_NUM_CHANNELS 4
 
@@ -63,6 +63,101 @@
 #define AD5755_SLEW_RATE_SHIFT			3
 #define AD5755_SLEW_ENABLE			BIT(12)
 
+enum ad5755_mode {
+	AD5755_MODE_VOLTAGE_0V_5V		= 0,
+	AD5755_MODE_VOLTAGE_0V_10V		= 1,
+	AD5755_MODE_VOLTAGE_PLUSMINUS_5V	= 2,
+	AD5755_MODE_VOLTAGE_PLUSMINUS_10V	= 3,
+	AD5755_MODE_CURRENT_4mA_20mA		= 4,
+	AD5755_MODE_CURRENT_0mA_20mA		= 5,
+	AD5755_MODE_CURRENT_0mA_24mA		= 6,
+};
+
+enum ad5755_dc_dc_phase {
+	AD5755_DC_DC_PHASE_ALL_SAME_EDGE		= 0,
+	AD5755_DC_DC_PHASE_A_B_SAME_EDGE_C_D_OPP_EDGE	= 1,
+	AD5755_DC_DC_PHASE_A_C_SAME_EDGE_B_D_OPP_EDGE	= 2,
+	AD5755_DC_DC_PHASE_90_DEGREE			= 3,
+};
+
+enum ad5755_dc_dc_freq {
+	AD5755_DC_DC_FREQ_250kHZ = 0,
+	AD5755_DC_DC_FREQ_410kHZ = 1,
+	AD5755_DC_DC_FREQ_650kHZ = 2,
+};
+
+enum ad5755_dc_dc_maxv {
+	AD5755_DC_DC_MAXV_23V	= 0,
+	AD5755_DC_DC_MAXV_24V5	= 1,
+	AD5755_DC_DC_MAXV_27V	= 2,
+	AD5755_DC_DC_MAXV_29V5	= 3,
+};
+
+enum ad5755_slew_rate {
+	AD5755_SLEW_RATE_64k	= 0,
+	AD5755_SLEW_RATE_32k	= 1,
+	AD5755_SLEW_RATE_16k	= 2,
+	AD5755_SLEW_RATE_8k	= 3,
+	AD5755_SLEW_RATE_4k	= 4,
+	AD5755_SLEW_RATE_2k	= 5,
+	AD5755_SLEW_RATE_1k	= 6,
+	AD5755_SLEW_RATE_500	= 7,
+	AD5755_SLEW_RATE_250	= 8,
+	AD5755_SLEW_RATE_125	= 9,
+	AD5755_SLEW_RATE_64	= 10,
+	AD5755_SLEW_RATE_32	= 11,
+	AD5755_SLEW_RATE_16	= 12,
+	AD5755_SLEW_RATE_8	= 13,
+	AD5755_SLEW_RATE_4	= 14,
+	AD5755_SLEW_RATE_0_5	= 15,
+};
+
+enum ad5755_slew_step_size {
+	AD5755_SLEW_STEP_SIZE_1 = 0,
+	AD5755_SLEW_STEP_SIZE_2 = 1,
+	AD5755_SLEW_STEP_SIZE_4 = 2,
+	AD5755_SLEW_STEP_SIZE_8 = 3,
+	AD5755_SLEW_STEP_SIZE_16 = 4,
+	AD5755_SLEW_STEP_SIZE_32 = 5,
+	AD5755_SLEW_STEP_SIZE_64 = 6,
+	AD5755_SLEW_STEP_SIZE_128 = 7,
+	AD5755_SLEW_STEP_SIZE_256 = 8,
+};
+
+/**
+ * struct ad5755_platform_data - AD5755 DAC driver platform data
+ * @ext_dc_dc_compenstation_resistor: Whether an external DC-DC converter
+ * compensation register is used.
+ * @dc_dc_phase: DC-DC converter phase.
+ * @dc_dc_freq: DC-DC converter frequency.
+ * @dc_dc_maxv: DC-DC maximum allowed boost voltage.
+ * @dac: Per DAC instance parameters.
+ * @dac.mode: The mode to be used for the DAC output.
+ * @dac.ext_current_sense_resistor: Whether an external current sense resistor
+ * is used.
+ * @dac.enable_voltage_overrange: Whether to enable 20% voltage output overrange.
+ * @dac.slew.enable: Whether to enable digital slew.
+ * @dac.slew.rate: Slew rate of the digital slew.
+ * @dac.slew.step_size: Slew step size of the digital slew.
+ **/
+struct ad5755_platform_data {
+	bool ext_dc_dc_compenstation_resistor;
+	enum ad5755_dc_dc_phase dc_dc_phase;
+	enum ad5755_dc_dc_freq dc_dc_freq;
+	enum ad5755_dc_dc_maxv dc_dc_maxv;
+
+	struct {
+		enum ad5755_mode mode;
+		bool ext_current_sense_resistor;
+		bool enable_voltage_overrange;
+		struct {
+			bool enable;
+			enum ad5755_slew_rate rate;
+			enum ad5755_slew_step_size step_size;
+		} slew;
+	} dac[4];
+};
+
 /**
  * struct ad5755_chip_info - chip specific information
  * @channel_template:	channel specification
@@ -82,6 +177,7 @@ struct ad5755_chip_info {
  * @pwr_down:	bitmask which contains  hether a channel is powered down or not
  * @ctrl:	software shadow of the channel ctrl registers
  * @channels:	iio channel spec for the device
+ * @lock:	lock to protect the data buffer during SPI ops
  * @data:	spi transfer buffers
  */
 struct ad5755_state {
@@ -90,16 +186,17 @@ struct ad5755_state {
 	unsigned int			pwr_down;
 	unsigned int			ctrl[AD5755_NUM_CHANNELS];
 	struct iio_chan_spec		channels[AD5755_NUM_CHANNELS];
+	struct mutex			lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[2] ____cacheline_aligned;
+	} data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad5755_type {
@@ -109,7 +206,6 @@ enum ad5755_type {
 	ID_AD5737,
 };
 
-#ifdef CONFIG_OF
 static const int ad5755_dcdc_freq_table[][2] = {
 	{ 250000, AD5755_DC_DC_FREQ_250kHZ },
 	{ 410000, AD5755_DC_DC_FREQ_410kHZ },
@@ -152,7 +248,6 @@ static const int ad5755_slew_step_table[][2] = {
 	{ 2, AD5755_SLEW_STEP_SIZE_2 },
 	{ 1, AD5755_SLEW_STEP_SIZE_1 },
 };
-#endif
 
 static int ad5755_write_unlocked(struct iio_dev *indio_dev,
 	unsigned int reg, unsigned int val)
@@ -174,11 +269,12 @@ static int ad5755_write_ctrl_unlocked(struct iio_dev *indio_dev,
 static int ad5755_write(struct iio_dev *indio_dev, unsigned int reg,
 	unsigned int val)
 {
+	struct ad5755_state *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	ret = ad5755_write_unlocked(indio_dev, reg, val);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -186,11 +282,12 @@ static int ad5755_write(struct iio_dev *indio_dev, unsigned int reg,
 static int ad5755_write_ctrl(struct iio_dev *indio_dev, unsigned int channel,
 	unsigned int reg, unsigned int val)
 {
+	struct ad5755_state *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	ret = ad5755_write_ctrl_unlocked(indio_dev, channel, reg, val);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -211,7 +308,7 @@ static int ad5755_read(struct iio_dev *indio_dev, unsigned int addr)
 		},
 	};
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	st->data[0].d32 = cpu_to_be32(AD5755_READ_FLAG | (addr << 16));
 	st->data[1].d32 = cpu_to_be32(AD5755_NOOP);
@@ -220,7 +317,7 @@ static int ad5755_read(struct iio_dev *indio_dev, unsigned int addr)
 	if (ret >= 0)
 		ret = be32_to_cpu(st->data[1].d32) & 0xffff;
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -246,7 +343,7 @@ static int ad5755_set_channel_pwr_down(struct iio_dev *indio_dev,
 	struct ad5755_state *st = iio_priv(indio_dev);
 	unsigned int mask = BIT(channel);
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	if ((bool)(st->pwr_down & mask) == pwr_down)
 		goto out_unlock;
@@ -266,7 +363,7 @@ static int ad5755_set_channel_pwr_down(struct iio_dev *indio_dev,
 	}
 
 out_unlock:
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return 0;
 }
@@ -395,8 +492,8 @@ static ssize_t ad5755_read_powerdown(struct iio_dev *indio_dev, uintptr_t priv,
 {
 	struct ad5755_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n",
-		       (bool)(st->pwr_down & (1 << chan->channel)));
+	return sysfs_emit(buf, "%d\n",
+			  (bool)(st->pwr_down & (1 << chan->channel)));
 }
 
 static ssize_t ad5755_write_powerdown(struct iio_dev *indio_dev, uintptr_t priv,
@@ -405,7 +502,7 @@ static ssize_t ad5755_write_powerdown(struct iio_dev *indio_dev, uintptr_t priv,
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -600,30 +697,29 @@ static const struct ad5755_platform_data ad5755_default_pdata = {
 	},
 };
 
-#ifdef CONFIG_OF
-static struct ad5755_platform_data *ad5755_parse_dt(struct device *dev)
+static struct ad5755_platform_data *ad5755_parse_fw(struct device *dev)
 {
-	struct device_node *np = dev->of_node;
-	struct device_node *pp;
+	struct fwnode_handle *pp;
 	struct ad5755_platform_data *pdata;
 	unsigned int tmp;
 	unsigned int tmparray[3];
 	int devnr, i;
 
+	if (!dev_fwnode(dev))
+		return NULL;
+
 	pdata = devm_kzalloc(dev, sizeof(*pdata), GFP_KERNEL);
 	if (!pdata)
 		return NULL;
 
 	pdata->ext_dc_dc_compenstation_resistor =
-	    of_property_read_bool(np, "adi,ext-dc-dc-compenstation-resistor");
+	    device_property_read_bool(dev, "adi,ext-dc-dc-compenstation-resistor");
 
-	if (!of_property_read_u32(np, "adi,dc-dc-phase", &tmp))
-		pdata->dc_dc_phase = tmp;
-	else
-		pdata->dc_dc_phase = AD5755_DC_DC_PHASE_ALL_SAME_EDGE;
+	pdata->dc_dc_phase = AD5755_DC_DC_PHASE_ALL_SAME_EDGE;
+	device_property_read_u32(dev, "adi,dc-dc-phase", &pdata->dc_dc_phase);
 
 	pdata->dc_dc_freq = AD5755_DC_DC_FREQ_410kHZ;
-	if (!of_property_read_u32(np, "adi,dc-dc-freq-hz", &tmp)) {
+	if (!device_property_read_u32(dev, "adi,dc-dc-freq-hz", &tmp)) {
 		for (i = 0; i < ARRAY_SIZE(ad5755_dcdc_freq_table); i++) {
 			if (tmp == ad5755_dcdc_freq_table[i][0]) {
 				pdata->dc_dc_freq = ad5755_dcdc_freq_table[i][1];
@@ -631,46 +727,42 @@ static struct ad5755_platform_data *ad5755_parse_dt(struct device *dev)
 			}
 		}
 
-		if (i == ARRAY_SIZE(ad5755_dcdc_freq_table)) {
+		if (i == ARRAY_SIZE(ad5755_dcdc_freq_table))
 			dev_err(dev,
-				"adi,dc-dc-freq out of range selecting 410kHz");
-		}
+				"adi,dc-dc-freq out of range selecting 410kHz\n");
 	}
 
 	pdata->dc_dc_maxv = AD5755_DC_DC_MAXV_23V;
-	if (!of_property_read_u32(np, "adi,dc-dc-max-microvolt", &tmp)) {
+	if (!device_property_read_u32(dev, "adi,dc-dc-max-microvolt", &tmp)) {
 		for (i = 0; i < ARRAY_SIZE(ad5755_dcdc_maxv_table); i++) {
 			if (tmp == ad5755_dcdc_maxv_table[i][0]) {
 				pdata->dc_dc_maxv = ad5755_dcdc_maxv_table[i][1];
 				break;
 			}
 		}
-		if (i == ARRAY_SIZE(ad5755_dcdc_maxv_table)) {
+		if (i == ARRAY_SIZE(ad5755_dcdc_maxv_table))
 				dev_err(dev,
-					"adi,dc-dc-maxv out of range selecting 23V");
-		}
+					"adi,dc-dc-maxv out of range selecting 23V\n");
 	}
 
 	devnr = 0;
-	for_each_child_of_node(np, pp) {
+	device_for_each_child_node(dev, pp) {
 		if (devnr >= AD5755_NUM_CHANNELS) {
 			dev_err(dev,
-				"There is to many channels defined in DT\n");
+				"There are too many channels defined in DT\n");
 			goto error_out;
 		}
 
-		if (!of_property_read_u32(pp, "adi,mode", &tmp))
-			pdata->dac[devnr].mode = tmp;
-		else
-			pdata->dac[devnr].mode = AD5755_MODE_CURRENT_4mA_20mA;
+		pdata->dac[devnr].mode = AD5755_MODE_CURRENT_4mA_20mA;
+		fwnode_property_read_u32(pp, "adi,mode", &pdata->dac[devnr].mode);
 
 		pdata->dac[devnr].ext_current_sense_resistor =
-		    of_property_read_bool(pp, "adi,ext-current-sense-resistor");
+		    fwnode_property_read_bool(pp, "adi,ext-current-sense-resistor");
 
 		pdata->dac[devnr].enable_voltage_overrange =
-		    of_property_read_bool(pp, "adi,enable-voltage-overrange");
+		    fwnode_property_read_bool(pp, "adi,enable-voltage-overrange");
 
-		if (!of_property_read_u32_array(pp, "adi,slew", tmparray, 3)) {
+		if (!fwnode_property_read_u32_array(pp, "adi,slew", tmparray, 3)) {
 			pdata->dac[devnr].slew.enable = tmparray[0];
 
 			pdata->dac[devnr].slew.rate = AD5755_SLEW_RATE_64k;
@@ -681,11 +773,10 @@ static struct ad5755_platform_data *ad5755_parse_dt(struct device *dev)
 					break;
 				}
 			}
-			if (i == ARRAY_SIZE(ad5755_slew_rate_table)) {
+			if (i == ARRAY_SIZE(ad5755_slew_rate_table))
 				dev_err(dev,
-					"channel %d slew rate out of range selecting 64kHz",
+					"channel %d slew rate out of range selecting 64kHz\n",
 					devnr);
-			}
 
 			pdata->dac[devnr].slew.step_size = AD5755_SLEW_STEP_SIZE_1;
 			for (i = 0; i < ARRAY_SIZE(ad5755_slew_step_table); i++) {
@@ -695,11 +786,10 @@ static struct ad5755_platform_data *ad5755_parse_dt(struct device *dev)
 					break;
 				}
 			}
-			if (i == ARRAY_SIZE(ad5755_slew_step_table)) {
+			if (i == ARRAY_SIZE(ad5755_slew_step_table))
 				dev_err(dev,
-					"channel %d slew step size out of range selecting 1 LSB",
+					"channel %d slew step size out of range selecting 1 LSB\n",
 					devnr);
-			}
 		} else {
 			pdata->dac[devnr].slew.enable = false;
 			pdata->dac[devnr].slew.rate = AD5755_SLEW_RATE_64k;
@@ -715,18 +805,11 @@ static struct ad5755_platform_data *ad5755_parse_dt(struct device *dev)
 	devm_kfree(dev, pdata);
 	return NULL;
 }
-#else
-static
-struct ad5755_platform_data *ad5755_parse_dt(struct device *dev)
-{
-	return NULL;
-}
-#endif
 
 static int ad5755_probe(struct spi_device *spi)
 {
 	enum ad5755_type type = spi_get_device_id(spi)->driver_data;
-	const struct ad5755_platform_data *pdata = dev_get_platdata(&spi->dev);
+	const struct ad5755_platform_data *pdata;
 	struct iio_dev *indio_dev;
 	struct ad5755_state *st;
 	int ret;
@@ -744,19 +827,17 @@ static int ad5755_probe(struct spi_device *spi)
 	st->spi = spi;
 	st->pwr_down = 0xf;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad5755_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->num_channels = AD5755_NUM_CHANNELS;
 
-	if (spi->dev.of_node)
-		pdata = ad5755_parse_dt(&spi->dev);
-	else
-		pdata = spi->dev.platform_data;
+	mutex_init(&st->lock);
+
 
+	pdata = ad5755_parse_fw(&spi->dev);
 	if (!pdata) {
-		dev_warn(&spi->dev, "no platform data? using default\n");
+		dev_warn(&spi->dev, "no firmware provided parameters? using default\n");
 		pdata = &ad5755_default_pdata;
 	}
 
diff --git a/drivers/iio/dac/ad5758.c b/drivers/iio/dac/ad5758.c
index 475646c82b40..98771e37a7b5 100644
--- a/drivers/iio/dac/ad5758.c
+++ b/drivers/iio/dac/ad5758.c
@@ -10,9 +10,8 @@
 #include <linux/delay.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/property.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/spi/spi.h>
 #include <linux/gpio/consumer.h>
 
@@ -92,24 +91,24 @@
 
 #define AD5758_FULL_SCALE_MICRO	65535000000ULL
 
+struct ad5758_range {
+	int reg;
+	int min;
+	int max;
+};
+
 /**
  * struct ad5758_state - driver instance specific data
  * @spi:	spi_device
  * @lock:	mutex lock
+ * @gpio_reset:	gpio descriptor for the reset line
  * @out_range:	struct which stores the output range
  * @dc_dc_mode:	variable which stores the mode of operation
  * @dc_dc_ilim:	variable which stores the dc-to-dc converter current limit
  * @slew_time:	variable which stores the target slew time
  * @pwr_down:	variable which contains whether a channel is powered down or not
- * @data:	spi transfer buffers
+ * @d32:	spi transfer buffers
  */
-
-struct ad5758_range {
-	int reg;
-	int min;
-	int max;
-};
-
 struct ad5758_state {
 	struct spi_device *spi;
 	struct mutex lock;
@@ -122,7 +121,7 @@ struct ad5758_state {
 	__be32 d32[3];
 };
 
-/**
+/*
  * Output ranges corresponding to bits [3:0] from DAC_CONFIG register
  * 0000: 0 V to 5 V voltage range
  * 0001: 0 V to 10 V voltage range
@@ -574,7 +573,7 @@ static ssize_t ad5758_read_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5758_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", st->pwr_down);
+	return sysfs_emit(buf, "%d\n", st->pwr_down);
 }
 
 static ssize_t ad5758_write_powerdown(struct iio_dev *indio_dev,
@@ -854,7 +853,6 @@ static int ad5758_probe(struct spi_device *spi)
 
 	mutex_init(&st->lock);
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad5758_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
diff --git a/drivers/iio/dac/ad5761.c b/drivers/iio/dac/ad5761.c
index 4fb42b743f0f..6aa1a068adb0 100644
--- a/drivers/iio/dac/ad5761.c
+++ b/drivers/iio/dac/ad5761.c
@@ -3,7 +3,7 @@
  * AD5721, AD5721R, AD5761, AD5761R, Voltage Output Digital to Analog Converter
  *
  * Copyright 2016 Qtechnology A/S
- * 2016 Ricardo Ribalda <ricardo.ribalda@gmail.com>
+ * 2016 Ricardo Ribalda <ribalda@kernel.org>
  */
 #include <linux/kernel.h>
 #include <linux/module.h>
@@ -57,24 +57,26 @@ enum ad5761_supported_device_ids {
  * @use_intref:		true when the internal voltage reference is used
  * @vref:		actual voltage reference in mVolts
  * @range:		output range mode used
+ * @lock:		lock to protect the data buffer during SPI ops
  * @data:		cache aligned spi buffer
  */
 struct ad5761_state {
 	struct spi_device		*spi;
 	struct regulator		*vref_reg;
+	struct mutex			lock;
 
 	bool use_intref;
 	int vref;
 	enum ad5761_voltage_range range;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[3] ____cacheline_aligned;
+	} data[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const struct ad5761_range_params ad5761_range_params[] = {
@@ -124,9 +126,9 @@ static int ad5761_spi_write(struct iio_dev *indio_dev, u8 addr, u16 val)
 	struct ad5761_state *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	ret = _ad5761_spi_write(st, addr, val);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -163,9 +165,9 @@ static int ad5761_spi_read(struct iio_dev *indio_dev, u8 addr, u16 *val)
 	struct ad5761_state *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	ret = _ad5761_spi_read(st, addr, val);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -368,11 +370,12 @@ static int ad5761_probe(struct spi_device *spi)
 	if (pdata)
 		voltage_range = pdata->voltage_range;
 
+	mutex_init(&st->lock);
+
 	ret = ad5761_spi_set_range(st, voltage_range);
 	if (ret)
 		goto disable_regulator_err;
 
-	iio_dev->dev.parent = &spi->dev;
 	iio_dev->info = &ad5761_info;
 	iio_dev->modes = INDIO_DIRECT_MODE;
 	iio_dev->channels = &chip_info->channel;
@@ -391,7 +394,7 @@ disable_regulator_err:
 	return ret;
 }
 
-static int ad5761_remove(struct spi_device *spi)
+static void ad5761_remove(struct spi_device *spi)
 {
 	struct iio_dev *iio_dev = spi_get_drvdata(spi);
 	struct ad5761_state *st = iio_priv(iio_dev);
@@ -400,8 +403,6 @@ static int ad5761_remove(struct spi_device *spi)
 
 	if (!IS_ERR_OR_NULL(st->vref_reg))
 		regulator_disable(st->vref_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5761_id[] = {
@@ -423,6 +424,6 @@ static struct spi_driver ad5761_driver = {
 };
 module_spi_driver(ad5761_driver);
 
-MODULE_AUTHOR("Ricardo Ribalda <ricardo.ribalda@gmail.com>");
+MODULE_AUTHOR("Ricardo Ribalda <ribalda@kernel.org>");
 MODULE_DESCRIPTION("Analog Devices AD5721, AD5721R, AD5761, AD5761R driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/dac/ad5764.c b/drivers/iio/dac/ad5764.c
index f7ab211604a1..26c049d5b73a 100644
--- a/drivers/iio/dac/ad5764.c
+++ b/drivers/iio/dac/ad5764.c
@@ -33,9 +33,8 @@
  * struct ad5764_chip_info - chip specific information
  * @int_vref:	Value of the internal reference voltage in uV - 0 if external
  *		reference voltage is used
- * @channel	channel specification
+ * @channels:	channel specification
 */
-
 struct ad5764_chip_info {
 	unsigned long int_vref;
 	const struct iio_chan_spec *channels;
@@ -46,6 +45,7 @@ struct ad5764_chip_info {
  * @spi:		spi_device
  * @chip_info:		chip info
  * @vref_reg:		vref supply regulators
+ * @lock:		lock to protect the data buffer during SPI ops
  * @data:		spi transfer buffers
  */
 
@@ -53,15 +53,16 @@ struct ad5764_state {
 	struct spi_device		*spi;
 	const struct ad5764_chip_info	*chip_info;
 	struct regulator_bulk_data	vref_reg[2];
+	struct mutex			lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[2] ____cacheline_aligned;
+	} data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum ad5764_type {
@@ -126,11 +127,11 @@ static int ad5764_write(struct iio_dev *indio_dev, unsigned int reg,
 	struct ad5764_state *st = iio_priv(indio_dev);
 	int ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	st->data[0].d32 = cpu_to_be32((reg << 16) | val);
 
 	ret = spi_write(st->spi, &st->data[0].d8[1], 3);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -151,7 +152,7 @@ static int ad5764_read(struct iio_dev *indio_dev, unsigned int reg,
 		},
 	};
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 
 	st->data[0].d32 = cpu_to_be32((1 << 23) | (reg << 16));
 
@@ -159,7 +160,7 @@ static int ad5764_read(struct iio_dev *indio_dev, unsigned int reg,
 	if (ret >= 0)
 		*val = be32_to_cpu(st->data[1].d32) & 0xffff;
 
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -288,13 +289,14 @@ static int ad5764_probe(struct spi_device *spi)
 	st->spi = spi;
 	st->chip_info = &ad5764_chip_infos[type];
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->info = &ad5764_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->num_channels = AD5764_NUM_CHANNELS;
 	indio_dev->channels = st->chip_info->channels;
 
+	mutex_init(&st->lock);
+
 	if (st->chip_info->int_vref == 0) {
 		st->vref_reg[0].supply = "vrefAB";
 		st->vref_reg[1].supply = "vrefCD";
@@ -330,7 +332,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int ad5764_remove(struct spi_device *spi)
+static void ad5764_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad5764_state *st = iio_priv(indio_dev);
@@ -339,8 +341,6 @@ static int ad5764_remove(struct spi_device *spi)
 
 	if (st->chip_info->int_vref == 0)
 		regulator_bulk_disable(ARRAY_SIZE(st->vref_reg), st->vref_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5764_ids[] = {
diff --git a/drivers/iio/dac/ad5766.c b/drivers/iio/dac/ad5766.c
new file mode 100644
index 000000000000..899894523752
--- /dev/null
+++ b/drivers/iio/dac/ad5766.c
@@ -0,0 +1,674 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Analog Devices AD5766, AD5767
+ * Digital to Analog Converters driver
+ * Copyright 2019-2020 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+#include <asm/unaligned.h>
+
+#define AD5766_UPPER_WORD_SPI_MASK		GENMASK(31, 16)
+#define AD5766_LOWER_WORD_SPI_MASK		GENMASK(15, 0)
+#define AD5766_DITHER_SOURCE_MASK(ch)		GENMASK(((2 * ch) + 1), (2 * ch))
+#define AD5766_DITHER_SOURCE(ch, source)	BIT((ch * 2) + source)
+#define AD5766_DITHER_SCALE_MASK(x)		AD5766_DITHER_SOURCE_MASK(x)
+#define AD5766_DITHER_SCALE(ch, scale)		(scale << (ch * 2))
+#define AD5766_DITHER_ENABLE_MASK(ch)		BIT(ch)
+#define AD5766_DITHER_ENABLE(ch, state)		((!state) << ch)
+#define AD5766_DITHER_INVERT_MASK(ch)		BIT(ch)
+#define AD5766_DITHER_INVERT(ch, state)		(state << ch)
+
+#define AD5766_CMD_NOP_MUX_OUT			0x00
+#define AD5766_CMD_SDO_CNTRL			0x01
+#define AD5766_CMD_WR_IN_REG(x)			(0x10 | ((x) & GENMASK(3, 0)))
+#define AD5766_CMD_WR_DAC_REG(x)		(0x20 | ((x) & GENMASK(3, 0)))
+#define AD5766_CMD_SW_LDAC			0x30
+#define AD5766_CMD_SPAN_REG			0x40
+#define AD5766_CMD_WR_PWR_DITHER		0x51
+#define AD5766_CMD_WR_DAC_REG_ALL		0x60
+#define AD5766_CMD_SW_FULL_RESET		0x70
+#define AD5766_CMD_READBACK_REG(x)		(0x80 | ((x) & GENMASK(3, 0)))
+#define AD5766_CMD_DITHER_SIG_1			0x90
+#define AD5766_CMD_DITHER_SIG_2			0xA0
+#define AD5766_CMD_INV_DITHER			0xB0
+#define AD5766_CMD_DITHER_SCALE_1		0xC0
+#define AD5766_CMD_DITHER_SCALE_2		0xD0
+
+#define AD5766_FULL_RESET_CODE			0x1234
+
+enum ad5766_type {
+	ID_AD5766,
+	ID_AD5767,
+};
+
+enum ad5766_voltage_range {
+	AD5766_VOLTAGE_RANGE_M20V_0V,
+	AD5766_VOLTAGE_RANGE_M16V_to_0V,
+	AD5766_VOLTAGE_RANGE_M10V_to_0V,
+	AD5766_VOLTAGE_RANGE_M12V_to_14V,
+	AD5766_VOLTAGE_RANGE_M16V_to_10V,
+	AD5766_VOLTAGE_RANGE_M10V_to_6V,
+	AD5766_VOLTAGE_RANGE_M5V_to_5V,
+	AD5766_VOLTAGE_RANGE_M10V_to_10V,
+};
+
+/**
+ * struct ad5766_chip_info - chip specific information
+ * @num_channels:	number of channels
+ * @channels:	        channel specification
+ */
+struct ad5766_chip_info {
+	unsigned int			num_channels;
+	const struct iio_chan_spec	*channels;
+};
+
+enum {
+	AD5766_DITHER_ENABLE,
+	AD5766_DITHER_INVERT,
+	AD5766_DITHER_SOURCE,
+};
+
+/*
+ * Dither signal can also be scaled.
+ * Available dither scale strings corresponding to "dither_scale" field in
+ * "struct ad5766_state".
+ */
+static const char * const ad5766_dither_scales[] = {
+	"1",
+	"0.75",
+	"0.5",
+	"0.25",
+};
+
+/**
+ * struct ad5766_state - driver instance specific data
+ * @spi:		SPI device
+ * @lock:		Lock used to restrict concurrent access to SPI device
+ * @chip_info:		Chip model specific constants
+ * @gpio_reset:		Reset GPIO, used to reset the device
+ * @crt_range:		Current selected output range
+ * @dither_enable:	Power enable bit for each channel dither block (for
+ *			example, D15 = DAC 15,D8 = DAC 8, and D0 = DAC 0)
+ *			0 - Normal operation, 1 - Power down
+ * @dither_invert:	Inverts the dither signal applied to the selected DAC
+ *			outputs
+ * @dither_source:	Selects between 2 possible sources:
+ *			1: N0, 2: N1
+ *			Two bits are used for each channel
+ * @dither_scale:	Two bits are used for each of the 16 channels:
+ *			0: 1 SCALING, 1: 0.75 SCALING, 2: 0.5 SCALING,
+ *			3: 0.25 SCALING.
+ * @data:		SPI transfer buffers
+ */
+struct ad5766_state {
+	struct spi_device		*spi;
+	struct mutex			lock;
+	const struct ad5766_chip_info	*chip_info;
+	struct gpio_desc		*gpio_reset;
+	enum ad5766_voltage_range	crt_range;
+	u16		dither_enable;
+	u16		dither_invert;
+	u32		dither_source;
+	u32		dither_scale;
+	union {
+		u32	d32;
+		u16	w16[2];
+		u8	b8[4];
+	} data[3] __aligned(IIO_DMA_MINALIGN);
+};
+
+struct ad5766_span_tbl {
+	int		min;
+	int		max;
+};
+
+static const struct ad5766_span_tbl ad5766_span_tbl[] = {
+	[AD5766_VOLTAGE_RANGE_M20V_0V] =	{-20, 0},
+	[AD5766_VOLTAGE_RANGE_M16V_to_0V] =	{-16, 0},
+	[AD5766_VOLTAGE_RANGE_M10V_to_0V] =	{-10, 0},
+	[AD5766_VOLTAGE_RANGE_M12V_to_14V] =	{-12, 14},
+	[AD5766_VOLTAGE_RANGE_M16V_to_10V] =	{-16, 10},
+	[AD5766_VOLTAGE_RANGE_M10V_to_6V] =	{-10, 6},
+	[AD5766_VOLTAGE_RANGE_M5V_to_5V] =	{-5, 5},
+	[AD5766_VOLTAGE_RANGE_M10V_to_10V] =	{-10, 10},
+};
+
+static int __ad5766_spi_read(struct ad5766_state *st, u8 dac, int *val)
+{
+	int ret;
+	struct spi_transfer xfers[] = {
+		{
+			.tx_buf = &st->data[0].d32,
+			.bits_per_word = 8,
+			.len = 3,
+			.cs_change = 1,
+		}, {
+			.tx_buf = &st->data[1].d32,
+			.rx_buf = &st->data[2].d32,
+			.bits_per_word = 8,
+			.len = 3,
+		},
+	};
+
+	st->data[0].d32 = AD5766_CMD_READBACK_REG(dac);
+	st->data[1].d32 = AD5766_CMD_NOP_MUX_OUT;
+
+	ret = spi_sync_transfer(st->spi, xfers, ARRAY_SIZE(xfers));
+	if (ret)
+		return ret;
+
+	*val = st->data[2].w16[1];
+
+	return ret;
+}
+
+static int __ad5766_spi_write(struct ad5766_state *st, u8 command, u16 data)
+{
+	st->data[0].b8[0] = command;
+	put_unaligned_be16(data, &st->data[0].b8[1]);
+
+	return spi_write(st->spi, &st->data[0].b8[0], 3);
+}
+
+static int ad5766_read(struct iio_dev *indio_dev, u8 dac, int *val)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad5766_spi_read(st, dac, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad5766_write(struct iio_dev *indio_dev, u8 dac, u16 data)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad5766_spi_write(st, AD5766_CMD_WR_DAC_REG(dac), data);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad5766_reset(struct ad5766_state *st)
+{
+	int ret;
+
+	if (st->gpio_reset) {
+		gpiod_set_value_cansleep(st->gpio_reset, 1);
+		ndelay(100); /* t_reset >= 100ns */
+		gpiod_set_value_cansleep(st->gpio_reset, 0);
+	} else {
+		ret = __ad5766_spi_write(st, AD5766_CMD_SW_FULL_RESET,
+					AD5766_FULL_RESET_CODE);
+		if (ret < 0)
+			return ret;
+	}
+
+	/*
+	 * Minimum time between a reset and the subsequent successful write is
+	 * typically 25 ns
+	 */
+	ndelay(25);
+
+	return 0;
+}
+
+static int ad5766_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long m)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (m) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ad5766_read(indio_dev, chan->address, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = ad5766_span_tbl[st->crt_range].min;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = ad5766_span_tbl[st->crt_range].max -
+		       ad5766_span_tbl[st->crt_range].min;
+		*val2 = st->chip_info->channels[0].scan_type.realbits;
+
+		return IIO_VAL_FRACTIONAL_LOG2;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad5766_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val,
+			    int val2,
+			    long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+	{
+		const int max_val = GENMASK(chan->scan_type.realbits - 1, 0);
+
+		if (val > max_val || val < 0)
+			return -EINVAL;
+		val <<= chan->scan_type.shift;
+		return ad5766_write(indio_dev, chan->address, val);
+	}
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ad5766_info = {
+	.read_raw = ad5766_read_raw,
+	.write_raw = ad5766_write_raw,
+};
+
+static int ad5766_get_dither_source(struct iio_dev *dev,
+				    const struct iio_chan_spec *chan)
+{
+	struct ad5766_state *st = iio_priv(dev);
+	u32 source;
+
+	source = st->dither_source & AD5766_DITHER_SOURCE_MASK(chan->channel);
+	source = source >> (chan->channel * 2);
+	source -= 1;
+
+	return source;
+}
+
+static int ad5766_set_dither_source(struct iio_dev *dev,
+			  const struct iio_chan_spec *chan,
+			  unsigned int source)
+{
+	struct ad5766_state *st = iio_priv(dev);
+	uint16_t val;
+	int ret;
+
+	st->dither_source &= ~AD5766_DITHER_SOURCE_MASK(chan->channel);
+	st->dither_source |= AD5766_DITHER_SOURCE(chan->channel, source);
+
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_source);
+	ret = ad5766_write(dev, AD5766_CMD_DITHER_SIG_1, val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_source);
+
+	return ad5766_write(dev, AD5766_CMD_DITHER_SIG_2, val);
+}
+
+static int ad5766_get_dither_scale(struct iio_dev *dev,
+				   const struct iio_chan_spec *chan)
+{
+	struct ad5766_state *st = iio_priv(dev);
+	u32 scale;
+
+	scale = st->dither_scale & AD5766_DITHER_SCALE_MASK(chan->channel);
+
+	return (scale >> (chan->channel * 2));
+}
+
+static int ad5766_set_dither_scale(struct iio_dev *dev,
+			  const struct iio_chan_spec *chan,
+			  unsigned int scale)
+{
+	int ret;
+	struct ad5766_state *st = iio_priv(dev);
+	uint16_t val;
+
+	st->dither_scale &= ~AD5766_DITHER_SCALE_MASK(chan->channel);
+	st->dither_scale |= AD5766_DITHER_SCALE(chan->channel, scale);
+
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_scale);
+	ret = ad5766_write(dev, AD5766_CMD_DITHER_SCALE_1, val);
+	if (ret)
+		return ret;
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_scale);
+
+	return ad5766_write(dev, AD5766_CMD_DITHER_SCALE_2, val);
+}
+
+static const struct iio_enum ad5766_dither_scale_enum = {
+	.items = ad5766_dither_scales,
+	.num_items = ARRAY_SIZE(ad5766_dither_scales),
+	.set = ad5766_set_dither_scale,
+	.get = ad5766_get_dither_scale,
+};
+
+static ssize_t ad5766_read_ext(struct iio_dev *indio_dev,
+			       uintptr_t private,
+			       const struct iio_chan_spec *chan,
+			       char *buf)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+
+	switch (private) {
+	case AD5766_DITHER_ENABLE:
+		return sprintf(buf, "%u\n",
+			       !(st->dither_enable & BIT(chan->channel)));
+		break;
+	case AD5766_DITHER_INVERT:
+		return sprintf(buf, "%u\n",
+			       !!(st->dither_invert & BIT(chan->channel)));
+		break;
+	case AD5766_DITHER_SOURCE:
+		return sprintf(buf, "%d\n",
+			       ad5766_get_dither_source(indio_dev, chan));
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t ad5766_write_ext(struct iio_dev *indio_dev,
+				 uintptr_t private,
+				 const struct iio_chan_spec *chan,
+				 const char *buf, size_t len)
+{
+	struct ad5766_state *st = iio_priv(indio_dev);
+	bool readin;
+	int ret;
+
+	ret = kstrtobool(buf, &readin);
+	if (ret)
+		return ret;
+
+	switch (private) {
+	case AD5766_DITHER_ENABLE:
+		st->dither_enable &= ~AD5766_DITHER_ENABLE_MASK(chan->channel);
+		st->dither_enable |= AD5766_DITHER_ENABLE(chan->channel,
+							  readin);
+		ret = ad5766_write(indio_dev, AD5766_CMD_WR_PWR_DITHER,
+				   st->dither_enable);
+		break;
+	case AD5766_DITHER_INVERT:
+		st->dither_invert &= ~AD5766_DITHER_INVERT_MASK(chan->channel);
+		st->dither_invert |= AD5766_DITHER_INVERT(chan->channel,
+							  readin);
+		ret = ad5766_write(indio_dev, AD5766_CMD_INV_DITHER,
+				   st->dither_invert);
+		break;
+	case AD5766_DITHER_SOURCE:
+		ret = ad5766_set_dither_source(indio_dev, chan, readin);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return ret ? ret : len;
+}
+
+#define _AD5766_CHAN_EXT_INFO(_name, _what, _shared) { \
+	.name = _name, \
+	.read = ad5766_read_ext, \
+	.write = ad5766_write_ext, \
+	.private = _what, \
+	.shared = _shared, \
+}
+
+static const struct iio_chan_spec_ext_info ad5766_ext_info[] = {
+
+	_AD5766_CHAN_EXT_INFO("dither_enable", AD5766_DITHER_ENABLE,
+			      IIO_SEPARATE),
+	_AD5766_CHAN_EXT_INFO("dither_invert", AD5766_DITHER_INVERT,
+			      IIO_SEPARATE),
+	_AD5766_CHAN_EXT_INFO("dither_source", AD5766_DITHER_SOURCE,
+			      IIO_SEPARATE),
+	IIO_ENUM("dither_scale", IIO_SEPARATE, &ad5766_dither_scale_enum),
+	IIO_ENUM_AVAILABLE("dither_scale", IIO_SEPARATE,
+			   &ad5766_dither_scale_enum),
+	{}
+};
+
+#define AD576x_CHANNEL(_chan, _bits) {					\
+	.type = IIO_VOLTAGE,						\
+	.indexed = 1,							\
+	.output = 1,							\
+	.channel = (_chan),						\
+	.address = (_chan),						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |		\
+		BIT(IIO_CHAN_INFO_SCALE),				\
+	.scan_index = (_chan),						\
+	.scan_type = {							\
+		.sign = 'u',						\
+		.realbits = (_bits),					\
+		.storagebits = 16,					\
+		.shift = 16 - (_bits),					\
+	},								\
+	.ext_info = ad5766_ext_info,					\
+}
+
+#define DECLARE_AD576x_CHANNELS(_name, _bits)			\
+const struct iio_chan_spec _name[] = {				\
+	AD576x_CHANNEL(0, (_bits)),				\
+	AD576x_CHANNEL(1, (_bits)),				\
+	AD576x_CHANNEL(2, (_bits)),				\
+	AD576x_CHANNEL(3, (_bits)),				\
+	AD576x_CHANNEL(4, (_bits)),				\
+	AD576x_CHANNEL(5, (_bits)),				\
+	AD576x_CHANNEL(6, (_bits)),				\
+	AD576x_CHANNEL(7, (_bits)),				\
+	AD576x_CHANNEL(8, (_bits)),				\
+	AD576x_CHANNEL(9, (_bits)),				\
+	AD576x_CHANNEL(10, (_bits)),				\
+	AD576x_CHANNEL(11, (_bits)),				\
+	AD576x_CHANNEL(12, (_bits)),				\
+	AD576x_CHANNEL(13, (_bits)),				\
+	AD576x_CHANNEL(14, (_bits)),				\
+	AD576x_CHANNEL(15, (_bits)),				\
+}
+
+static DECLARE_AD576x_CHANNELS(ad5766_channels, 16);
+static DECLARE_AD576x_CHANNELS(ad5767_channels, 12);
+
+static const struct ad5766_chip_info ad5766_chip_infos[] = {
+	[ID_AD5766] = {
+		.num_channels = ARRAY_SIZE(ad5766_channels),
+		.channels = ad5766_channels,
+	},
+	[ID_AD5767] = {
+		.num_channels = ARRAY_SIZE(ad5767_channels),
+		.channels = ad5767_channels,
+	},
+};
+
+static int ad5766_get_output_range(struct ad5766_state *st)
+{
+	int i, ret, min, max, tmp[2];
+
+	ret = device_property_read_u32_array(&st->spi->dev,
+					     "output-range-microvolts",
+					     tmp, 2);
+	if (ret)
+		return ret;
+
+	min = tmp[0] / 1000000;
+	max = tmp[1] / 1000000;
+	for (i = 0; i < ARRAY_SIZE(ad5766_span_tbl); i++) {
+		if (ad5766_span_tbl[i].min != min ||
+		    ad5766_span_tbl[i].max != max)
+			continue;
+
+		st->crt_range = i;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static int ad5766_default_setup(struct ad5766_state *st)
+{
+	uint16_t val;
+	int ret, i;
+
+	/* Always issue a reset before writing to the span register. */
+	ret = ad5766_reset(st);
+	if (ret)
+		return ret;
+
+	ret = ad5766_get_output_range(st);
+	if (ret)
+		return ret;
+
+	/* Dither power down */
+	st->dither_enable = GENMASK(15, 0);
+	ret = __ad5766_spi_write(st, AD5766_CMD_WR_PWR_DITHER,
+			     st->dither_enable);
+	if (ret)
+		return ret;
+
+	st->dither_source = 0;
+	for (i = 0; i < ARRAY_SIZE(ad5766_channels); i++)
+		st->dither_source |= AD5766_DITHER_SOURCE(i, 0);
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_source);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SIG_1, val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_source);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SIG_2, val);
+	if (ret)
+		return ret;
+
+	st->dither_scale = 0;
+	val = FIELD_GET(AD5766_LOWER_WORD_SPI_MASK, st->dither_scale);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SCALE_1, val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(AD5766_UPPER_WORD_SPI_MASK, st->dither_scale);
+	ret = __ad5766_spi_write(st, AD5766_CMD_DITHER_SCALE_2, val);
+	if (ret)
+		return ret;
+
+	st->dither_invert = 0;
+	ret = __ad5766_spi_write(st, AD5766_CMD_INV_DITHER, st->dither_invert);
+	if (ret)
+		return ret;
+
+	return  __ad5766_spi_write(st, AD5766_CMD_SPAN_REG, st->crt_range);
+}
+
+static irqreturn_t ad5766_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct iio_buffer *buffer = indio_dev->buffer;
+	struct ad5766_state *st = iio_priv(indio_dev);
+	int ret, ch, i;
+	u16 data[ARRAY_SIZE(ad5766_channels)];
+
+	ret = iio_pop_from_buffer(buffer, data);
+	if (ret)
+		goto done;
+
+	i = 0;
+	mutex_lock(&st->lock);
+	for_each_set_bit(ch, indio_dev->active_scan_mask,
+			 st->chip_info->num_channels - 1)
+		__ad5766_spi_write(st, AD5766_CMD_WR_IN_REG(ch), data[i++]);
+
+	__ad5766_spi_write(st, AD5766_CMD_SW_LDAC,
+			   *indio_dev->active_scan_mask);
+	mutex_unlock(&st->lock);
+
+done:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static int ad5766_probe(struct spi_device *spi)
+{
+	enum ad5766_type type;
+	struct iio_dev *indio_dev;
+	struct ad5766_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	mutex_init(&st->lock);
+
+	st->spi = spi;
+	type = spi_get_device_id(spi)->driver_data;
+	st->chip_info = &ad5766_chip_infos[type];
+
+	indio_dev->channels = st->chip_info->channels;
+	indio_dev->num_channels = st->chip_info->num_channels;
+	indio_dev->info = &ad5766_info;
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	st->gpio_reset = devm_gpiod_get_optional(&st->spi->dev, "reset",
+						GPIOD_OUT_LOW);
+	if (IS_ERR(st->gpio_reset))
+		return PTR_ERR(st->gpio_reset);
+
+	ret = ad5766_default_setup(st);
+	if (ret)
+		return ret;
+
+	/* Configure trigger buffer */
+	ret = devm_iio_triggered_buffer_setup_ext(&spi->dev, indio_dev, NULL,
+						  ad5766_trigger_handler,
+						  IIO_BUFFER_DIRECTION_OUT,
+						  NULL,
+						  NULL);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id ad5766_dt_match[] = {
+	{ .compatible = "adi,ad5766" },
+	{ .compatible = "adi,ad5767" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad5766_dt_match);
+
+static const struct spi_device_id ad5766_spi_ids[] = {
+	{ "ad5766", ID_AD5766 },
+	{ "ad5767", ID_AD5767 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ad5766_spi_ids);
+
+static struct spi_driver ad5766_driver = {
+	.driver = {
+		.name = "ad5766",
+		.of_match_table = ad5766_dt_match,
+	},
+	.probe = ad5766_probe,
+	.id_table = ad5766_spi_ids,
+};
+module_spi_driver(ad5766_driver);
+
+MODULE_AUTHOR("Denis-Gabriel Gheorghescu <denis.gheorghescu@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD5766/AD5767 DACs");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/dac/ad5770r.c b/drivers/iio/dac/ad5770r.c
new file mode 100644
index 000000000000..f66d67402e43
--- /dev/null
+++ b/drivers/iio/dac/ad5770r.c
@@ -0,0 +1,700 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * AD5770R Digital to analog converters driver
+ *
+ * Copyright 2018 Analog Devices Inc.
+ */
+
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#define ADI_SPI_IF_CONFIG_A		0x00
+#define ADI_SPI_IF_CONFIG_B		0x01
+#define ADI_SPI_IF_DEVICE_CONFIG	0x02
+#define ADI_SPI_IF_CHIP_TYPE		0x03
+#define ADI_SPI_IF_PRODUCT_ID_L		0x04
+#define ADI_SPI_IF_PRODUCT_ID_H		0x05
+#define ADI_SPI_IF_CHIP_GRADE		0x06
+#define ADI_SPI_IF_SCRACTH_PAD		0x0A
+#define ADI_SPI_IF_SPI_REVISION		0x0B
+#define ADI_SPI_IF_SPI_VENDOR_L		0x0C
+#define ADI_SPI_IF_SPI_VENDOR_H		0x0D
+#define ADI_SPI_IF_SPI_STREAM_MODE	0x0E
+#define ADI_SPI_IF_CONFIG_C		0x10
+#define ADI_SPI_IF_STATUS_A		0x11
+
+/* ADI_SPI_IF_CONFIG_A */
+#define ADI_SPI_IF_SW_RESET_MSK		(BIT(0) | BIT(7))
+#define ADI_SPI_IF_SW_RESET_SEL(x)	((x) & ADI_SPI_IF_SW_RESET_MSK)
+#define ADI_SPI_IF_ADDR_ASC_MSK		(BIT(2) | BIT(5))
+#define ADI_SPI_IF_ADDR_ASC_SEL(x)	(((x) << 2) & ADI_SPI_IF_ADDR_ASC_MSK)
+
+/* ADI_SPI_IF_CONFIG_B */
+#define ADI_SPI_IF_SINGLE_INS_MSK	BIT(7)
+#define ADI_SPI_IF_SINGLE_INS_SEL(x)	FIELD_PREP(ADI_SPI_IF_SINGLE_INS_MSK, x)
+#define ADI_SPI_IF_SHORT_INS_MSK	BIT(7)
+#define ADI_SPI_IF_SHORT_INS_SEL(x)	FIELD_PREP(ADI_SPI_IF_SINGLE_INS_MSK, x)
+
+/* ADI_SPI_IF_CONFIG_C */
+#define ADI_SPI_IF_STRICT_REG_MSK	BIT(5)
+#define ADI_SPI_IF_STRICT_REG_GET(x)	FIELD_GET(ADI_SPI_IF_STRICT_REG_MSK, x)
+
+/* AD5770R configuration registers */
+#define AD5770R_CHANNEL_CONFIG		0x14
+#define AD5770R_OUTPUT_RANGE(ch)	(0x15 + (ch))
+#define AD5770R_FILTER_RESISTOR(ch)	(0x1D + (ch))
+#define AD5770R_REFERENCE		0x1B
+#define AD5770R_DAC_LSB(ch)		(0x26 + 2 * (ch))
+#define AD5770R_DAC_MSB(ch)		(0x27 + 2 * (ch))
+#define AD5770R_CH_SELECT		0x34
+#define AD5770R_CH_ENABLE		0x44
+
+/* AD5770R_CHANNEL_CONFIG */
+#define AD5770R_CFG_CH0_SINK_EN(x)		(((x) & 0x1) << 7)
+#define AD5770R_CFG_SHUTDOWN_B(x, ch)		(((x) & 0x1) << (ch))
+
+/* AD5770R_OUTPUT_RANGE */
+#define AD5770R_RANGE_OUTPUT_SCALING(x)		(((x) & GENMASK(5, 0)) << 2)
+#define AD5770R_RANGE_MODE(x)			((x) & GENMASK(1, 0))
+
+/* AD5770R_REFERENCE */
+#define AD5770R_REF_RESISTOR_SEL(x)		(((x) & 0x1) << 2)
+#define AD5770R_REF_SEL(x)			((x) & GENMASK(1, 0))
+
+/* AD5770R_CH_ENABLE */
+#define AD5770R_CH_SET(x, ch)		(((x) & 0x1) << (ch))
+
+#define AD5770R_MAX_CHANNELS	6
+#define AD5770R_MAX_CH_MODES	14
+#define AD5770R_LOW_VREF_mV	1250
+#define AD5770R_HIGH_VREF_mV	2500
+
+enum ad5770r_ch0_modes {
+	AD5770R_CH0_0_300 = 0,
+	AD5770R_CH0_NEG_60_0,
+	AD5770R_CH0_NEG_60_300
+};
+
+enum ad5770r_ch1_modes {
+	AD5770R_CH1_0_140_LOW_HEAD = 1,
+	AD5770R_CH1_0_140_LOW_NOISE,
+	AD5770R_CH1_0_250
+};
+
+enum ad5770r_ch2_5_modes {
+	AD5770R_CH_LOW_RANGE = 0,
+	AD5770R_CH_HIGH_RANGE
+};
+
+enum ad5770r_ref_v {
+	AD5770R_EXT_2_5_V = 0,
+	AD5770R_INT_1_25_V_OUT_ON,
+	AD5770R_EXT_1_25_V,
+	AD5770R_INT_1_25_V_OUT_OFF
+};
+
+enum ad5770r_output_filter_resistor {
+	AD5770R_FILTER_60_OHM = 0x0,
+	AD5770R_FILTER_5_6_KOHM = 0x5,
+	AD5770R_FILTER_11_2_KOHM,
+	AD5770R_FILTER_22_2_KOHM,
+	AD5770R_FILTER_44_4_KOHM,
+	AD5770R_FILTER_104_KOHM,
+};
+
+struct ad5770r_out_range {
+	u8	out_scale;
+	u8	out_range_mode;
+};
+
+/**
+ * struct ad5770r_state - driver instance specific data
+ * @spi:		spi_device
+ * @regmap:		regmap
+ * @vref_reg:		fixed regulator for reference configuration
+ * @gpio_reset:		gpio descriptor
+ * @output_mode:	array contains channels output ranges
+ * @vref:		reference value
+ * @ch_pwr_down:	powerdown flags
+ * @internal_ref:	internal reference flag
+ * @external_res:	external 2.5k resistor flag
+ * @transf_buf:		cache aligned buffer for spi read/write
+ */
+struct ad5770r_state {
+	struct spi_device		*spi;
+	struct regmap			*regmap;
+	struct regulator		*vref_reg;
+	struct gpio_desc		*gpio_reset;
+	struct ad5770r_out_range	output_mode[AD5770R_MAX_CHANNELS];
+	int				vref;
+	bool				ch_pwr_down[AD5770R_MAX_CHANNELS];
+	bool				internal_ref;
+	bool				external_res;
+	u8				transf_buf[2] __aligned(IIO_DMA_MINALIGN);
+};
+
+static const struct regmap_config ad5770r_spi_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.read_flag_mask = BIT(7),
+};
+
+struct ad5770r_output_modes {
+	unsigned int ch;
+	u8 mode;
+	int min;
+	int max;
+};
+
+static struct ad5770r_output_modes ad5770r_rng_tbl[] = {
+	{ 0, AD5770R_CH0_0_300, 0, 300 },
+	{ 0, AD5770R_CH0_NEG_60_0, -60, 0 },
+	{ 0, AD5770R_CH0_NEG_60_300, -60, 300 },
+	{ 1, AD5770R_CH1_0_140_LOW_HEAD, 0, 140 },
+	{ 1, AD5770R_CH1_0_140_LOW_NOISE, 0, 140 },
+	{ 1, AD5770R_CH1_0_250, 0, 250 },
+	{ 2, AD5770R_CH_LOW_RANGE, 0, 55 },
+	{ 2, AD5770R_CH_HIGH_RANGE, 0, 150 },
+	{ 3, AD5770R_CH_LOW_RANGE, 0, 45 },
+	{ 3, AD5770R_CH_HIGH_RANGE, 0, 100 },
+	{ 4, AD5770R_CH_LOW_RANGE, 0, 45 },
+	{ 4, AD5770R_CH_HIGH_RANGE, 0, 100 },
+	{ 5, AD5770R_CH_LOW_RANGE, 0, 45 },
+	{ 5, AD5770R_CH_HIGH_RANGE, 0, 100 },
+};
+
+static const unsigned int ad5770r_filter_freqs[] = {
+	153, 357, 715, 1400, 2800, 262000,
+};
+
+static const unsigned int ad5770r_filter_reg_vals[] = {
+	AD5770R_FILTER_104_KOHM,
+	AD5770R_FILTER_44_4_KOHM,
+	AD5770R_FILTER_22_2_KOHM,
+	AD5770R_FILTER_11_2_KOHM,
+	AD5770R_FILTER_5_6_KOHM,
+	AD5770R_FILTER_60_OHM
+};
+
+static int ad5770r_set_output_mode(struct ad5770r_state *st,
+				   const struct ad5770r_out_range *out_mode,
+				   int channel)
+{
+	unsigned int regval;
+
+	regval = AD5770R_RANGE_OUTPUT_SCALING(out_mode->out_scale) |
+		 AD5770R_RANGE_MODE(out_mode->out_range_mode);
+
+	return regmap_write(st->regmap,
+			    AD5770R_OUTPUT_RANGE(channel), regval);
+}
+
+static int ad5770r_set_reference(struct ad5770r_state *st)
+{
+	unsigned int regval;
+
+	regval = AD5770R_REF_RESISTOR_SEL(st->external_res);
+
+	if (st->internal_ref) {
+		regval |= AD5770R_REF_SEL(AD5770R_INT_1_25_V_OUT_OFF);
+	} else {
+		switch (st->vref) {
+		case AD5770R_LOW_VREF_mV:
+			regval |= AD5770R_REF_SEL(AD5770R_EXT_1_25_V);
+			break;
+		case AD5770R_HIGH_VREF_mV:
+			regval |= AD5770R_REF_SEL(AD5770R_EXT_2_5_V);
+			break;
+		default:
+			regval = AD5770R_REF_SEL(AD5770R_INT_1_25_V_OUT_OFF);
+			break;
+		}
+	}
+
+	return regmap_write(st->regmap, AD5770R_REFERENCE, regval);
+}
+
+static int ad5770r_soft_reset(struct ad5770r_state *st)
+{
+	return regmap_write(st->regmap, ADI_SPI_IF_CONFIG_A,
+			    ADI_SPI_IF_SW_RESET_SEL(1));
+}
+
+static int ad5770r_reset(struct ad5770r_state *st)
+{
+	/* Perform software reset if no GPIO provided */
+	if (!st->gpio_reset)
+		return ad5770r_soft_reset(st);
+
+	gpiod_set_value_cansleep(st->gpio_reset, 0);
+	usleep_range(10, 20);
+	gpiod_set_value_cansleep(st->gpio_reset, 1);
+
+	/* data must not be written during reset timeframe */
+	usleep_range(100, 200);
+
+	return 0;
+}
+
+static int ad5770r_get_range(struct ad5770r_state *st,
+			     int ch, int *min, int *max)
+{
+	int i;
+	u8 tbl_ch, tbl_mode, out_range;
+
+	out_range = st->output_mode[ch].out_range_mode;
+
+	for (i = 0; i < AD5770R_MAX_CH_MODES; i++) {
+		tbl_ch = ad5770r_rng_tbl[i].ch;
+		tbl_mode = ad5770r_rng_tbl[i].mode;
+		if (tbl_ch == ch && tbl_mode == out_range) {
+			*min = ad5770r_rng_tbl[i].min;
+			*max = ad5770r_rng_tbl[i].max;
+			return 0;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int ad5770r_get_filter_freq(struct iio_dev *indio_dev,
+				   const struct iio_chan_spec *chan, int *freq)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+	int ret;
+	unsigned int regval, i;
+
+	ret = regmap_read(st->regmap,
+			  AD5770R_FILTER_RESISTOR(chan->channel), &regval);
+	if (ret < 0)
+		return ret;
+
+	for (i = 0; i < ARRAY_SIZE(ad5770r_filter_reg_vals); i++)
+		if (regval == ad5770r_filter_reg_vals[i])
+			break;
+	if (i == ARRAY_SIZE(ad5770r_filter_reg_vals))
+		return -EINVAL;
+
+	*freq = ad5770r_filter_freqs[i];
+
+	return IIO_VAL_INT;
+}
+
+static int ad5770r_set_filter_freq(struct iio_dev *indio_dev,
+				   const struct iio_chan_spec *chan,
+				   unsigned int freq)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+	unsigned int regval, i;
+
+	for (i = 0; i < ARRAY_SIZE(ad5770r_filter_freqs); i++)
+		if (ad5770r_filter_freqs[i] >= freq)
+			break;
+	if (i == ARRAY_SIZE(ad5770r_filter_freqs))
+		return -EINVAL;
+
+	regval = ad5770r_filter_reg_vals[i];
+
+	return regmap_write(st->regmap, AD5770R_FILTER_RESISTOR(chan->channel),
+			    regval);
+}
+
+static int ad5770r_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long info)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+	int max, min, ret;
+	u16 buf16;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		ret = regmap_bulk_read(st->regmap,
+				       chan->address,
+				       st->transf_buf, 2);
+		if (ret)
+			return 0;
+
+		buf16 = st->transf_buf[0] + (st->transf_buf[1] << 8);
+		*val = buf16 >> 2;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		ret = ad5770r_get_range(st, chan->channel, &min, &max);
+		if (ret < 0)
+			return ret;
+		*val = max - min;
+		/* There is no sign bit. (negative current is mapped from 0)
+		 * (sourced/sinked) current = raw * scale + offset
+		 * where offset in case of CH0 can be negative.
+		 */
+		*val2 = 14;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return ad5770r_get_filter_freq(indio_dev, chan, val);
+	case IIO_CHAN_INFO_OFFSET:
+		ret = ad5770r_get_range(st, chan->channel, &min, &max);
+		if (ret < 0)
+			return ret;
+		*val = min;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad5770r_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long info)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		st->transf_buf[0] = ((u16)val >> 6);
+		st->transf_buf[1] = (val & GENMASK(5, 0)) << 2;
+		return regmap_bulk_write(st->regmap, chan->address,
+					 st->transf_buf, 2);
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return ad5770r_set_filter_freq(indio_dev, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad5770r_read_freq_avail(struct iio_dev *indio_dev,
+				   struct iio_chan_spec const *chan,
+				   const int **vals, int *type, int *length,
+				   long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		*type = IIO_VAL_INT;
+		*vals = ad5770r_filter_freqs;
+		*length = ARRAY_SIZE(ad5770r_filter_freqs);
+		return IIO_AVAIL_LIST;
+	}
+
+	return -EINVAL;
+}
+
+static int ad5770r_reg_access(struct iio_dev *indio_dev,
+			      unsigned int reg,
+			      unsigned int writeval,
+			      unsigned int *readval)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(st->regmap, reg, readval);
+	else
+		return regmap_write(st->regmap, reg, writeval);
+}
+
+static const struct iio_info ad5770r_info = {
+	.read_raw = ad5770r_read_raw,
+	.write_raw = ad5770r_write_raw,
+	.read_avail = ad5770r_read_freq_avail,
+	.debugfs_reg_access = &ad5770r_reg_access,
+};
+
+static int ad5770r_store_output_range(struct ad5770r_state *st,
+				      int min, int max, int index)
+{
+	int i;
+
+	for (i = 0; i < AD5770R_MAX_CH_MODES; i++) {
+		if (ad5770r_rng_tbl[i].ch != index)
+			continue;
+		if (ad5770r_rng_tbl[i].min != min ||
+		    ad5770r_rng_tbl[i].max != max)
+			continue;
+		st->output_mode[index].out_range_mode = ad5770r_rng_tbl[i].mode;
+
+		return 0;
+	}
+
+	return -EINVAL;
+}
+
+static ssize_t ad5770r_read_dac_powerdown(struct iio_dev *indio_dev,
+					  uintptr_t private,
+					  const struct iio_chan_spec *chan,
+					  char *buf)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+
+	return sysfs_emit(buf, "%d\n", st->ch_pwr_down[chan->channel]);
+}
+
+static ssize_t ad5770r_write_dac_powerdown(struct iio_dev *indio_dev,
+					   uintptr_t private,
+					   const struct iio_chan_spec *chan,
+					   const char *buf, size_t len)
+{
+	struct ad5770r_state *st = iio_priv(indio_dev);
+	unsigned int regval;
+	unsigned int mask;
+	bool readin;
+	int ret;
+
+	ret = kstrtobool(buf, &readin);
+	if (ret)
+		return ret;
+
+	readin = !readin;
+
+	regval = AD5770R_CFG_SHUTDOWN_B(readin, chan->channel);
+	if (chan->channel == 0 &&
+	    st->output_mode[0].out_range_mode > AD5770R_CH0_0_300) {
+		regval |= AD5770R_CFG_CH0_SINK_EN(readin);
+		mask = BIT(chan->channel) + BIT(7);
+	} else {
+		mask = BIT(chan->channel);
+	}
+	ret = regmap_update_bits(st->regmap, AD5770R_CHANNEL_CONFIG, mask,
+				 regval);
+	if (ret)
+		return ret;
+
+	regval = AD5770R_CH_SET(readin, chan->channel);
+	ret = regmap_update_bits(st->regmap, AD5770R_CH_ENABLE,
+				 BIT(chan->channel), regval);
+	if (ret)
+		return ret;
+
+	st->ch_pwr_down[chan->channel] = !readin;
+
+	return len;
+}
+
+static const struct iio_chan_spec_ext_info ad5770r_ext_info[] = {
+	{
+		.name = "powerdown",
+		.read = ad5770r_read_dac_powerdown,
+		.write = ad5770r_write_dac_powerdown,
+		.shared = IIO_SEPARATE,
+	},
+	{ }
+};
+
+#define AD5770R_IDAC_CHANNEL(index, reg) {				\
+	.type = IIO_CURRENT,						\
+	.address = reg,							\
+	.indexed = 1,							\
+	.channel = index,						\
+	.output = 1,							\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+		BIT(IIO_CHAN_INFO_SCALE) |				\
+		BIT(IIO_CHAN_INFO_OFFSET) |				\
+		BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),	\
+	.info_mask_shared_by_type_available =				\
+		BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),	\
+	.ext_info = ad5770r_ext_info,					\
+}
+
+static const struct iio_chan_spec ad5770r_channels[] = {
+	AD5770R_IDAC_CHANNEL(0, AD5770R_DAC_MSB(0)),
+	AD5770R_IDAC_CHANNEL(1, AD5770R_DAC_MSB(1)),
+	AD5770R_IDAC_CHANNEL(2, AD5770R_DAC_MSB(2)),
+	AD5770R_IDAC_CHANNEL(3, AD5770R_DAC_MSB(3)),
+	AD5770R_IDAC_CHANNEL(4, AD5770R_DAC_MSB(4)),
+	AD5770R_IDAC_CHANNEL(5, AD5770R_DAC_MSB(5)),
+};
+
+static int ad5770r_channel_config(struct ad5770r_state *st)
+{
+	int ret, tmp[2], min, max;
+	unsigned int num;
+	struct fwnode_handle *child;
+
+	num = device_get_child_node_count(&st->spi->dev);
+	if (num != AD5770R_MAX_CHANNELS)
+		return -EINVAL;
+
+	device_for_each_child_node(&st->spi->dev, child) {
+		ret = fwnode_property_read_u32(child, "reg", &num);
+		if (ret)
+			goto err_child_out;
+		if (num >= AD5770R_MAX_CHANNELS) {
+			ret = -EINVAL;
+			goto err_child_out;
+		}
+
+		ret = fwnode_property_read_u32_array(child,
+						     "adi,range-microamp",
+						     tmp, 2);
+		if (ret)
+			goto err_child_out;
+
+		min = tmp[0] / 1000;
+		max = tmp[1] / 1000;
+		ret = ad5770r_store_output_range(st, min, max, num);
+		if (ret)
+			goto err_child_out;
+	}
+
+	return 0;
+
+err_child_out:
+	fwnode_handle_put(child);
+	return ret;
+}
+
+static int ad5770r_init(struct ad5770r_state *st)
+{
+	int ret, i;
+
+	st->gpio_reset = devm_gpiod_get_optional(&st->spi->dev, "reset",
+						 GPIOD_OUT_HIGH);
+	if (IS_ERR(st->gpio_reset))
+		return PTR_ERR(st->gpio_reset);
+
+	/* Perform a reset */
+	ret = ad5770r_reset(st);
+	if (ret)
+		return ret;
+
+	/* Set output range */
+	ret = ad5770r_channel_config(st);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < AD5770R_MAX_CHANNELS; i++) {
+		ret = ad5770r_set_output_mode(st,  &st->output_mode[i], i);
+		if (ret)
+			return ret;
+	}
+
+	st->external_res = fwnode_property_read_bool(st->spi->dev.fwnode,
+						     "adi,external-resistor");
+
+	ret = ad5770r_set_reference(st);
+	if (ret)
+		return ret;
+
+	/* Set outputs off */
+	ret = regmap_write(st->regmap, AD5770R_CHANNEL_CONFIG, 0x00);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap, AD5770R_CH_ENABLE, 0x00);
+	if (ret)
+		return ret;
+
+	for (i = 0; i < AD5770R_MAX_CHANNELS; i++)
+		st->ch_pwr_down[i] = true;
+
+	return ret;
+}
+
+static void ad5770r_disable_regulator(void *data)
+{
+	struct ad5770r_state *st = data;
+
+	regulator_disable(st->vref_reg);
+}
+
+static int ad5770r_probe(struct spi_device *spi)
+{
+	struct ad5770r_state *st;
+	struct iio_dev *indio_dev;
+	struct regmap *regmap;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	spi_set_drvdata(spi, indio_dev);
+
+	st->spi = spi;
+
+	regmap = devm_regmap_init_spi(spi, &ad5770r_spi_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&spi->dev, "Error initializing spi regmap: %ld\n",
+			PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+	st->regmap = regmap;
+
+	st->vref_reg = devm_regulator_get_optional(&spi->dev, "vref");
+	if (!IS_ERR(st->vref_reg)) {
+		ret = regulator_enable(st->vref_reg);
+		if (ret) {
+			dev_err(&spi->dev,
+				"Failed to enable vref regulators: %d\n", ret);
+			return ret;
+		}
+
+		ret = devm_add_action_or_reset(&spi->dev,
+					       ad5770r_disable_regulator,
+					       st);
+		if (ret < 0)
+			return ret;
+
+		ret = regulator_get_voltage(st->vref_reg);
+		if (ret < 0)
+			return ret;
+
+		st->vref = ret / 1000;
+	} else {
+		if (PTR_ERR(st->vref_reg) == -ENODEV) {
+			st->vref = AD5770R_LOW_VREF_mV;
+			st->internal_ref = true;
+		} else {
+			return PTR_ERR(st->vref_reg);
+		}
+	}
+
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->info = &ad5770r_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = ad5770r_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ad5770r_channels);
+
+	ret = ad5770r_init(st);
+	if (ret < 0) {
+		dev_err(&spi->dev, "AD5770R init failed\n");
+		return ret;
+	}
+
+	return devm_iio_device_register(&st->spi->dev, indio_dev);
+}
+
+static const struct of_device_id ad5770r_of_id[] = {
+	{ .compatible = "adi,ad5770r", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, ad5770r_of_id);
+
+static const struct spi_device_id ad5770r_id[] = {
+	{ "ad5770r", 0 },
+	{},
+};
+MODULE_DEVICE_TABLE(spi, ad5770r_id);
+
+static struct spi_driver ad5770r_driver = {
+	.driver = {
+		.name = KBUILD_MODNAME,
+		.of_match_table = ad5770r_of_id,
+	},
+	.probe = ad5770r_probe,
+	.id_table = ad5770r_id,
+};
+
+module_spi_driver(ad5770r_driver);
+
+MODULE_AUTHOR("Mircea Caprioru <mircea.caprioru@analog.com>");
+MODULE_DESCRIPTION("Analog Devices AD5770R IDAC");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/dac/ad5791.c b/drivers/iio/dac/ad5791.c
index 1d11f39ed047..a4167454da81 100644
--- a/drivers/iio/dac/ad5791.c
+++ b/drivers/iio/dac/ad5791.c
@@ -76,9 +76,11 @@ struct ad5791_chip_info {
  * @chip_info:		chip model specific constants
  * @vref_mv:		actual reference voltage used
  * @vref_neg_mv:	voltage of the negative supply
- * @pwr_down_mode	current power down mode
+ * @ctrl:		control register cache
+ * @pwr_down_mode:	current power down mode
+ * @pwr_down:		true if device is powered down
+ * @data:		spi transfer buffers
  */
-
 struct ad5791_state {
 	struct spi_device		*spi;
 	struct regulator		*reg_vdd;
@@ -93,13 +95,9 @@ struct ad5791_state {
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[3] ____cacheline_aligned;
+	} data[3] __aligned(IIO_DMA_MINALIGN);
 };
 
-/**
- * ad5791_supported_device_ids:
- */
-
 enum ad5791_supported_device_ids {
 	ID_AD5760,
 	ID_AD5780,
@@ -179,7 +177,7 @@ static ssize_t ad5791_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad5791_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", st->pwr_down);
+	return sysfs_emit(buf, "%d\n", st->pwr_down);
 }
 
 static ssize_t ad5791_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -190,7 +188,7 @@ static ssize_t ad5791_write_dac_powerdown(struct iio_dev *indio_dev,
 	int ret;
 	struct ad5791_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -287,7 +285,7 @@ static const struct iio_chan_spec_ext_info ad5791_ext_info[] = {
 	},
 	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE,
 		 &ad5791_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ad5791_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ad5791_powerdown_mode_enum),
 	{ },
 };
 
@@ -409,7 +407,6 @@ static int ad5791_probe(struct spi_device *spi)
 		goto error_disable_reg_neg;
 
 	spi_set_drvdata(spi, indio_dev);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &ad5791_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels
@@ -431,7 +428,7 @@ error_disable_reg_pos:
 	return ret;
 }
 
-static int ad5791_remove(struct spi_device *spi)
+static void ad5791_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad5791_state *st = iio_priv(indio_dev);
@@ -442,8 +439,6 @@ static int ad5791_remove(struct spi_device *spi)
 
 	if (!IS_ERR(st->reg_vss))
 		regulator_disable(st->reg_vss);
-
-	return 0;
 }
 
 static const struct spi_device_id ad5791_id[] = {
diff --git a/drivers/iio/dac/ad7293.c b/drivers/iio/dac/ad7293.c
new file mode 100644
index 000000000000..06f05750d921
--- /dev/null
+++ b/drivers/iio/dac/ad7293.c
@@ -0,0 +1,934 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * AD7293 driver
+ *
+ * Copyright 2021 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#include <asm/unaligned.h>
+
+#define AD7293_R1B				BIT(16)
+#define AD7293_R2B				BIT(17)
+#define AD7293_PAGE_ADDR_MSK			GENMASK(15, 8)
+#define AD7293_PAGE(x)				FIELD_PREP(AD7293_PAGE_ADDR_MSK, x)
+
+/* AD7293 Register Map Common */
+#define AD7293_REG_NO_OP			(AD7293_R1B | AD7293_PAGE(0x0) | 0x0)
+#define AD7293_REG_PAGE_SELECT			(AD7293_R1B | AD7293_PAGE(0x0) | 0x1)
+#define AD7293_REG_CONV_CMD			(AD7293_R2B | AD7293_PAGE(0x0) | 0x2)
+#define AD7293_REG_RESULT			(AD7293_R1B | AD7293_PAGE(0x0) | 0x3)
+#define AD7293_REG_DAC_EN			(AD7293_R1B | AD7293_PAGE(0x0) | 0x4)
+#define AD7293_REG_DEVICE_ID			(AD7293_R2B | AD7293_PAGE(0x0) | 0xC)
+#define AD7293_REG_SOFT_RESET			(AD7293_R2B | AD7293_PAGE(0x0) | 0xF)
+
+/* AD7293 Register Map Page 0x0 */
+#define AD7293_REG_VIN0				(AD7293_R2B | AD7293_PAGE(0x0) | 0x10)
+#define AD7293_REG_VIN1				(AD7293_R2B | AD7293_PAGE(0x0) | 0x11)
+#define AD7293_REG_VIN2				(AD7293_R2B | AD7293_PAGE(0x0) | 0x12)
+#define AD7293_REG_VIN3				(AD7293_R2B | AD7293_PAGE(0x0) | 0x13)
+#define AD7293_REG_TSENSE_INT			(AD7293_R2B | AD7293_PAGE(0x0) | 0x20)
+#define AD7293_REG_TSENSE_D0			(AD7293_R2B | AD7293_PAGE(0x0) | 0x21)
+#define AD7293_REG_TSENSE_D1			(AD7293_R2B | AD7293_PAGE(0x0) | 0x22)
+#define AD7293_REG_ISENSE_0			(AD7293_R2B | AD7293_PAGE(0x0) | 0x28)
+#define AD7293_REG_ISENSE_1			(AD7293_R2B | AD7293_PAGE(0x0) | 0x29)
+#define AD7293_REG_ISENSE_2			(AD7293_R2B | AD7293_PAGE(0x0) | 0x2A)
+#define AD7293_REG_ISENSE_3			(AD7293_R2B | AD7293_PAGE(0x0) | 0x2B)
+#define AD7293_REG_UNI_VOUT0			(AD7293_R2B | AD7293_PAGE(0x0) | 0x30)
+#define AD7293_REG_UNI_VOUT1			(AD7293_R2B | AD7293_PAGE(0x0) | 0x31)
+#define AD7293_REG_UNI_VOUT2			(AD7293_R2B | AD7293_PAGE(0x0) | 0x32)
+#define AD7293_REG_UNI_VOUT3			(AD7293_R2B | AD7293_PAGE(0x0) | 0x33)
+#define AD7293_REG_BI_VOUT0			(AD7293_R2B | AD7293_PAGE(0x0) | 0x34)
+#define AD7293_REG_BI_VOUT1			(AD7293_R2B | AD7293_PAGE(0x0) | 0x35)
+#define AD7293_REG_BI_VOUT2			(AD7293_R2B | AD7293_PAGE(0x0) | 0x36)
+#define AD7293_REG_BI_VOUT3			(AD7293_R2B | AD7293_PAGE(0x0) | 0x37)
+
+/* AD7293 Register Map Page 0x2 */
+#define AD7293_REG_DIGITAL_OUT_EN		(AD7293_R2B | AD7293_PAGE(0x2) | 0x11)
+#define AD7293_REG_DIGITAL_INOUT_FUNC		(AD7293_R2B | AD7293_PAGE(0x2) | 0x12)
+#define AD7293_REG_DIGITAL_FUNC_POL		(AD7293_R2B | AD7293_PAGE(0x2) | 0x13)
+#define AD7293_REG_GENERAL			(AD7293_R2B | AD7293_PAGE(0x2) | 0x14)
+#define AD7293_REG_VINX_RANGE0			(AD7293_R2B | AD7293_PAGE(0x2) | 0x15)
+#define AD7293_REG_VINX_RANGE1			(AD7293_R2B | AD7293_PAGE(0x2) | 0x16)
+#define AD7293_REG_VINX_DIFF_SE			(AD7293_R2B | AD7293_PAGE(0x2) | 0x17)
+#define AD7293_REG_VINX_FILTER			(AD7293_R2B | AD7293_PAGE(0x2) | 0x18)
+#define AD7293_REG_BG_EN			(AD7293_R2B | AD7293_PAGE(0x2) | 0x19)
+#define AD7293_REG_CONV_DELAY			(AD7293_R2B | AD7293_PAGE(0x2) | 0x1A)
+#define AD7293_REG_TSENSE_BG_EN			(AD7293_R2B | AD7293_PAGE(0x2) | 0x1B)
+#define AD7293_REG_ISENSE_BG_EN			(AD7293_R2B | AD7293_PAGE(0x2) | 0x1C)
+#define AD7293_REG_ISENSE_GAIN			(AD7293_R2B | AD7293_PAGE(0x2) | 0x1D)
+#define AD7293_REG_DAC_SNOOZE_O			(AD7293_R2B | AD7293_PAGE(0x2) | 0x1F)
+#define AD7293_REG_DAC_SNOOZE_1			(AD7293_R2B | AD7293_PAGE(0x2) | 0x20)
+#define AD7293_REG_RSX_MON_BG_EN		(AD7293_R2B | AD7293_PAGE(0x2) | 0x23)
+#define AD7293_REG_INTEGR_CL			(AD7293_R2B | AD7293_PAGE(0x2) | 0x28)
+#define AD7293_REG_PA_ON_CTRL			(AD7293_R2B | AD7293_PAGE(0x2) | 0x29)
+#define AD7293_REG_RAMP_TIME_0			(AD7293_R2B | AD7293_PAGE(0x2) | 0x2A)
+#define AD7293_REG_RAMP_TIME_1			(AD7293_R2B | AD7293_PAGE(0x2) | 0x2B)
+#define AD7293_REG_RAMP_TIME_2			(AD7293_R2B | AD7293_PAGE(0x2) | 0x2C)
+#define AD7293_REG_RAMP_TIME_3			(AD7293_R2B | AD7293_PAGE(0x2) | 0x2D)
+#define AD7293_REG_CL_FR_IT			(AD7293_R2B | AD7293_PAGE(0x2) | 0x2E)
+#define AD7293_REG_INTX_AVSS_AVDD		(AD7293_R2B | AD7293_PAGE(0x2) | 0x2F)
+
+/* AD7293 Register Map Page 0x3 */
+#define AD7293_REG_VINX_SEQ			(AD7293_R2B | AD7293_PAGE(0x3) | 0x10)
+#define AD7293_REG_ISENSEX_TSENSEX_SEQ		(AD7293_R2B | AD7293_PAGE(0x3) | 0x11)
+#define AD7293_REG_RSX_MON_BI_VOUTX_SEQ		(AD7293_R2B | AD7293_PAGE(0x3) | 0x12)
+
+/* AD7293 Register Map Page 0xE */
+#define AD7293_REG_VIN0_OFFSET			(AD7293_R1B | AD7293_PAGE(0xE) | 0x10)
+#define AD7293_REG_VIN1_OFFSET			(AD7293_R1B | AD7293_PAGE(0xE) | 0x11)
+#define AD7293_REG_VIN2_OFFSET			(AD7293_R1B | AD7293_PAGE(0xE) | 0x12)
+#define AD7293_REG_VIN3_OFFSET			(AD7293_R1B | AD7293_PAGE(0xE) | 0x13)
+#define AD7293_REG_TSENSE_INT_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x20)
+#define AD7293_REG_TSENSE_D0_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x21)
+#define AD7293_REG_TSENSE_D1_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x22)
+#define AD7293_REG_ISENSE0_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x28)
+#define AD7293_REG_ISENSE1_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x29)
+#define AD7293_REG_ISENSE2_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x2A)
+#define AD7293_REG_ISENSE3_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x2B)
+#define AD7293_REG_UNI_VOUT0_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x30)
+#define AD7293_REG_UNI_VOUT1_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x31)
+#define AD7293_REG_UNI_VOUT2_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x32)
+#define AD7293_REG_UNI_VOUT3_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x33)
+#define AD7293_REG_BI_VOUT0_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x34)
+#define AD7293_REG_BI_VOUT1_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x35)
+#define AD7293_REG_BI_VOUT2_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x36)
+#define AD7293_REG_BI_VOUT3_OFFSET		(AD7293_R1B | AD7293_PAGE(0xE) | 0x37)
+
+/* AD7293 Miscellaneous Definitions */
+#define AD7293_READ				BIT(7)
+#define AD7293_TRANSF_LEN_MSK			GENMASK(17, 16)
+
+#define AD7293_REG_ADDR_MSK			GENMASK(7, 0)
+#define AD7293_REG_VOUT_OFFSET_MSK		GENMASK(5, 4)
+#define AD7293_REG_DATA_RAW_MSK			GENMASK(15, 4)
+#define AD7293_REG_VINX_RANGE_GET_CH_MSK(x, ch)	(((x) >> (ch)) & 0x1)
+#define AD7293_REG_VINX_RANGE_SET_CH_MSK(x, ch)	(((x) & 0x1) << (ch))
+#define AD7293_CHIP_ID				0x18
+
+enum ad7293_ch_type {
+	AD7293_ADC_VINX,
+	AD7293_ADC_TSENSE,
+	AD7293_ADC_ISENSE,
+	AD7293_DAC,
+};
+
+enum ad7293_max_offset {
+	AD7293_TSENSE_MIN_OFFSET_CH = 4,
+	AD7293_ISENSE_MIN_OFFSET_CH = 7,
+	AD7293_VOUT_MIN_OFFSET_CH = 11,
+	AD7293_VOUT_MAX_OFFSET_CH = 18,
+};
+
+static const int dac_offset_table[] = {0, 1, 2};
+
+static const int isense_gain_table[] = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10};
+
+static const int adc_range_table[] = {0, 1, 2, 3};
+
+struct ad7293_state {
+	struct spi_device *spi;
+	/* Protect against concurrent accesses to the device, page selection and data content */
+	struct mutex lock;
+	struct gpio_desc *gpio_reset;
+	struct regulator *reg_avdd;
+	struct regulator *reg_vdrive;
+	u8 page_select;
+	u8 data[3] __aligned(IIO_DMA_MINALIGN);
+};
+
+static int ad7293_page_select(struct ad7293_state *st, unsigned int reg)
+{
+	int ret;
+
+	if (st->page_select != FIELD_GET(AD7293_PAGE_ADDR_MSK, reg)) {
+		st->data[0] = FIELD_GET(AD7293_REG_ADDR_MSK, AD7293_REG_PAGE_SELECT);
+		st->data[1] = FIELD_GET(AD7293_PAGE_ADDR_MSK, reg);
+
+		ret = spi_write(st->spi, &st->data[0], 2);
+		if (ret)
+			return ret;
+
+		st->page_select = FIELD_GET(AD7293_PAGE_ADDR_MSK, reg);
+	}
+
+	return 0;
+}
+
+static int __ad7293_spi_read(struct ad7293_state *st, unsigned int reg,
+			     u16 *val)
+{
+	int ret;
+	unsigned int length;
+	struct spi_transfer t = {0};
+
+	length = FIELD_GET(AD7293_TRANSF_LEN_MSK, reg);
+
+	ret = ad7293_page_select(st, reg);
+	if (ret)
+		return ret;
+
+	st->data[0] = AD7293_READ | FIELD_GET(AD7293_REG_ADDR_MSK, reg);
+	st->data[1] = 0x0;
+	st->data[2] = 0x0;
+
+	t.tx_buf = &st->data[0];
+	t.rx_buf = &st->data[0];
+	t.len = length + 1;
+
+	ret = spi_sync_transfer(st->spi, &t, 1);
+	if (ret)
+		return ret;
+
+	if (length == 1)
+		*val = st->data[1];
+	else
+		*val = get_unaligned_be16(&st->data[1]);
+
+	return 0;
+}
+
+static int ad7293_spi_read(struct ad7293_state *st, unsigned int reg,
+			   u16 *val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad7293_spi_read(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __ad7293_spi_write(struct ad7293_state *st, unsigned int reg,
+			      u16 val)
+{
+	int ret;
+	unsigned int length;
+
+	length = FIELD_GET(AD7293_TRANSF_LEN_MSK, reg);
+
+	ret = ad7293_page_select(st, reg);
+	if (ret)
+		return ret;
+
+	st->data[0] = FIELD_GET(AD7293_REG_ADDR_MSK, reg);
+
+	if (length == 1)
+		st->data[1] = val;
+	else
+		put_unaligned_be16(val, &st->data[1]);
+
+	return spi_write(st->spi, &st->data[0], length + 1);
+}
+
+static int ad7293_spi_write(struct ad7293_state *st, unsigned int reg,
+			    u16 val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad7293_spi_write(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __ad7293_spi_update_bits(struct ad7293_state *st, unsigned int reg,
+				    u16 mask, u16 val)
+{
+	int ret;
+	u16 data, temp;
+
+	ret = __ad7293_spi_read(st, reg, &data);
+	if (ret)
+		return ret;
+
+	temp = (data & ~mask) | (val & mask);
+
+	return __ad7293_spi_write(st, reg, temp);
+}
+
+static int ad7293_spi_update_bits(struct ad7293_state *st, unsigned int reg,
+				  u16 mask, u16 val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __ad7293_spi_update_bits(st, reg, mask, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad7293_adc_get_scale(struct ad7293_state *st, unsigned int ch,
+				u16 *range)
+{
+	int ret;
+	u16 data;
+
+	mutex_lock(&st->lock);
+
+	ret = __ad7293_spi_read(st, AD7293_REG_VINX_RANGE1, &data);
+	if (ret)
+		goto exit;
+
+	*range = AD7293_REG_VINX_RANGE_GET_CH_MSK(data, ch);
+
+	ret = __ad7293_spi_read(st, AD7293_REG_VINX_RANGE0, &data);
+	if (ret)
+		goto exit;
+
+	*range |= AD7293_REG_VINX_RANGE_GET_CH_MSK(data, ch) << 1;
+
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad7293_adc_set_scale(struct ad7293_state *st, unsigned int ch,
+				u16 range)
+{
+	int ret;
+	unsigned int ch_msk = BIT(ch);
+
+	mutex_lock(&st->lock);
+	ret = __ad7293_spi_update_bits(st, AD7293_REG_VINX_RANGE1, ch_msk,
+				       AD7293_REG_VINX_RANGE_SET_CH_MSK(range, ch));
+	if (ret)
+		goto exit;
+
+	ret = __ad7293_spi_update_bits(st, AD7293_REG_VINX_RANGE0, ch_msk,
+				       AD7293_REG_VINX_RANGE_SET_CH_MSK((range >> 1), ch));
+
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad7293_get_offset(struct ad7293_state *st, unsigned int ch,
+			     u16 *offset)
+{
+	if (ch < AD7293_TSENSE_MIN_OFFSET_CH)
+		return ad7293_spi_read(st, AD7293_REG_VIN0_OFFSET + ch, offset);
+	else if (ch < AD7293_ISENSE_MIN_OFFSET_CH)
+		return ad7293_spi_read(st, AD7293_REG_TSENSE_INT_OFFSET + (ch - 4), offset);
+	else if (ch < AD7293_VOUT_MIN_OFFSET_CH)
+		return ad7293_spi_read(st, AD7293_REG_ISENSE0_OFFSET + (ch - 7), offset);
+	else if (ch <= AD7293_VOUT_MAX_OFFSET_CH)
+		return ad7293_spi_read(st, AD7293_REG_UNI_VOUT0_OFFSET + (ch - 11), offset);
+
+	return -EINVAL;
+}
+
+static int ad7293_set_offset(struct ad7293_state *st, unsigned int ch,
+			     u16 offset)
+{
+	if (ch < AD7293_TSENSE_MIN_OFFSET_CH)
+		return ad7293_spi_write(st, AD7293_REG_VIN0_OFFSET + ch,
+					offset);
+	else if (ch < AD7293_ISENSE_MIN_OFFSET_CH)
+		return ad7293_spi_write(st,
+					AD7293_REG_TSENSE_INT_OFFSET +
+					(ch - AD7293_TSENSE_MIN_OFFSET_CH),
+					offset);
+	else if (ch < AD7293_VOUT_MIN_OFFSET_CH)
+		return ad7293_spi_write(st,
+					AD7293_REG_ISENSE0_OFFSET +
+					(ch - AD7293_ISENSE_MIN_OFFSET_CH),
+					offset);
+	else if (ch <= AD7293_VOUT_MAX_OFFSET_CH)
+		return ad7293_spi_update_bits(st,
+					      AD7293_REG_UNI_VOUT0_OFFSET +
+					      (ch - AD7293_VOUT_MIN_OFFSET_CH),
+					      AD7293_REG_VOUT_OFFSET_MSK,
+					      FIELD_PREP(AD7293_REG_VOUT_OFFSET_MSK, offset));
+
+	return -EINVAL;
+}
+
+static int ad7293_isense_set_scale(struct ad7293_state *st, unsigned int ch,
+				   u16 gain)
+{
+	unsigned int ch_msk = (0xf << (4 * ch));
+
+	return ad7293_spi_update_bits(st, AD7293_REG_ISENSE_GAIN, ch_msk,
+				      gain << (4 * ch));
+}
+
+static int ad7293_isense_get_scale(struct ad7293_state *st, unsigned int ch,
+				   u16 *gain)
+{
+	int ret;
+
+	ret = ad7293_spi_read(st, AD7293_REG_ISENSE_GAIN, gain);
+	if (ret)
+		return ret;
+
+	*gain = (*gain >> (4 * ch)) & 0xf;
+
+	return ret;
+}
+
+static int ad7293_dac_write_raw(struct ad7293_state *st, unsigned int ch,
+				u16 raw)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = __ad7293_spi_update_bits(st, AD7293_REG_DAC_EN, BIT(ch), BIT(ch));
+	if (ret)
+		goto exit;
+
+	ret =  __ad7293_spi_write(st, AD7293_REG_UNI_VOUT0 + ch,
+				  FIELD_PREP(AD7293_REG_DATA_RAW_MSK, raw));
+
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad7293_ch_read_raw(struct ad7293_state *st, enum ad7293_ch_type type,
+			      unsigned int ch, u16 *raw)
+{
+	int ret;
+	unsigned int reg_wr, reg_rd, data_wr;
+
+	switch (type) {
+	case AD7293_ADC_VINX:
+		reg_wr = AD7293_REG_VINX_SEQ;
+		reg_rd = AD7293_REG_VIN0 + ch;
+		data_wr = BIT(ch);
+
+		break;
+	case AD7293_ADC_TSENSE:
+		reg_wr = AD7293_REG_ISENSEX_TSENSEX_SEQ;
+		reg_rd = AD7293_REG_TSENSE_INT + ch;
+		data_wr = BIT(ch);
+
+		break;
+	case AD7293_ADC_ISENSE:
+		reg_wr = AD7293_REG_ISENSEX_TSENSEX_SEQ;
+		reg_rd = AD7293_REG_ISENSE_0 + ch;
+		data_wr = BIT(ch) << 8;
+
+		break;
+	case AD7293_DAC:
+		reg_rd = AD7293_REG_UNI_VOUT0 + ch;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&st->lock);
+
+	if (type != AD7293_DAC) {
+		if (type == AD7293_ADC_TSENSE) {
+			ret = __ad7293_spi_write(st, AD7293_REG_TSENSE_BG_EN,
+						 BIT(ch));
+			if (ret)
+				goto exit;
+
+			usleep_range(9000, 9900);
+		} else if (type == AD7293_ADC_ISENSE) {
+			ret = __ad7293_spi_write(st, AD7293_REG_ISENSE_BG_EN,
+						 BIT(ch));
+			if (ret)
+				goto exit;
+
+			usleep_range(2000, 7000);
+		}
+
+		ret = __ad7293_spi_write(st, reg_wr, data_wr);
+		if (ret)
+			goto exit;
+
+		ret = __ad7293_spi_write(st, AD7293_REG_CONV_CMD, 0x82);
+		if (ret)
+			goto exit;
+	}
+
+	ret = __ad7293_spi_read(st, reg_rd, raw);
+
+	*raw = FIELD_GET(AD7293_REG_DATA_RAW_MSK, *raw);
+
+exit:
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int ad7293_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long info)
+{
+	struct ad7293_state *st = iio_priv(indio_dev);
+	int ret;
+	u16 data;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (chan->output)
+				ret =  ad7293_ch_read_raw(st, AD7293_DAC,
+							  chan->channel, &data);
+			else
+				ret =  ad7293_ch_read_raw(st, AD7293_ADC_VINX,
+							  chan->channel, &data);
+
+			break;
+		case IIO_CURRENT:
+			ret =  ad7293_ch_read_raw(st, AD7293_ADC_ISENSE,
+						  chan->channel, &data);
+
+			break;
+		case IIO_TEMP:
+			ret =  ad7293_ch_read_raw(st, AD7293_ADC_TSENSE,
+						  chan->channel, &data);
+
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		if (ret)
+			return ret;
+
+		*val = data;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (chan->output) {
+				ret = ad7293_get_offset(st,
+							chan->channel + AD7293_VOUT_MIN_OFFSET_CH,
+							&data);
+
+				data = FIELD_GET(AD7293_REG_VOUT_OFFSET_MSK, data);
+			} else {
+				ret = ad7293_get_offset(st, chan->channel, &data);
+			}
+
+			break;
+		case IIO_CURRENT:
+			ret = ad7293_get_offset(st,
+						chan->channel + AD7293_ISENSE_MIN_OFFSET_CH,
+						&data);
+
+			break;
+		case IIO_TEMP:
+			ret = ad7293_get_offset(st,
+						chan->channel + AD7293_TSENSE_MIN_OFFSET_CH,
+						&data);
+
+			break;
+		default:
+			return -EINVAL;
+		}
+		if (ret)
+			return ret;
+
+		*val = data;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			ret = ad7293_adc_get_scale(st, chan->channel, &data);
+			if (ret)
+				return ret;
+
+			*val = data;
+
+			return IIO_VAL_INT;
+		case IIO_CURRENT:
+			ret = ad7293_isense_get_scale(st, chan->channel, &data);
+			if (ret)
+				return ret;
+
+			*val = data;
+
+			return IIO_VAL_INT;
+		case IIO_TEMP:
+			*val = 1;
+			*val2 = 8;
+
+			return IIO_VAL_FRACTIONAL;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7293_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long info)
+{
+	struct ad7293_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (!chan->output)
+				return -EINVAL;
+
+			return ad7293_dac_write_raw(st, chan->channel, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_OFFSET:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			if (chan->output)
+				return ad7293_set_offset(st,
+							 chan->channel +
+							 AD7293_VOUT_MIN_OFFSET_CH,
+							 val);
+			else
+				return ad7293_set_offset(st, chan->channel, val);
+		case IIO_CURRENT:
+			return ad7293_set_offset(st,
+						 chan->channel +
+						 AD7293_ISENSE_MIN_OFFSET_CH,
+						 val);
+		case IIO_TEMP:
+			return ad7293_set_offset(st,
+						 chan->channel +
+						 AD7293_TSENSE_MIN_OFFSET_CH,
+						 val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			return ad7293_adc_set_scale(st, chan->channel, val);
+		case IIO_CURRENT:
+			return ad7293_isense_set_scale(st, chan->channel, val);
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad7293_reg_access(struct iio_dev *indio_dev,
+			     unsigned int reg,
+			     unsigned int write_val,
+			     unsigned int *read_val)
+{
+	struct ad7293_state *st = iio_priv(indio_dev);
+	int ret;
+
+	if (read_val) {
+		u16 temp;
+		ret = ad7293_spi_read(st, reg, &temp);
+		*read_val = temp;
+	} else {
+		ret = ad7293_spi_write(st, reg, (u16)write_val);
+	}
+
+	return ret;
+}
+
+static int ad7293_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_OFFSET:
+		*vals = dac_offset_table;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(dac_offset_table);
+
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SCALE:
+		*type = IIO_VAL_INT;
+
+		switch (chan->type) {
+		case IIO_VOLTAGE:
+			*vals = adc_range_table;
+			*length = ARRAY_SIZE(adc_range_table);
+			return IIO_AVAIL_LIST;
+		case IIO_CURRENT:
+			*vals = isense_gain_table;
+			*length = ARRAY_SIZE(isense_gain_table);
+			return IIO_AVAIL_LIST;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+#define AD7293_CHAN_ADC(_channel) {					\
+	.type = IIO_VOLTAGE,						\
+	.output = 0,							\
+	.indexed = 1,							\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_SCALE) |		\
+			      BIT(IIO_CHAN_INFO_OFFSET),		\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE)	\
+}
+
+#define AD7293_CHAN_DAC(_channel) {					\
+	.type = IIO_VOLTAGE,						\
+	.output = 1,							\
+	.indexed = 1,							\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_OFFSET),		\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_OFFSET)	\
+}
+
+#define AD7293_CHAN_ISENSE(_channel) {					\
+	.type = IIO_CURRENT,						\
+	.output = 0,							\
+	.indexed = 1,							\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_OFFSET) |		\
+			      BIT(IIO_CHAN_INFO_SCALE),			\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE)	\
+}
+
+#define AD7293_CHAN_TEMP(_channel) {					\
+	.type = IIO_TEMP,						\
+	.output = 0,							\
+	.indexed = 1,							\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |			\
+			      BIT(IIO_CHAN_INFO_OFFSET),		\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE)		\
+}
+
+static const struct iio_chan_spec ad7293_channels[] = {
+	AD7293_CHAN_ADC(0),
+	AD7293_CHAN_ADC(1),
+	AD7293_CHAN_ADC(2),
+	AD7293_CHAN_ADC(3),
+	AD7293_CHAN_ISENSE(0),
+	AD7293_CHAN_ISENSE(1),
+	AD7293_CHAN_ISENSE(2),
+	AD7293_CHAN_ISENSE(3),
+	AD7293_CHAN_TEMP(0),
+	AD7293_CHAN_TEMP(1),
+	AD7293_CHAN_TEMP(2),
+	AD7293_CHAN_DAC(0),
+	AD7293_CHAN_DAC(1),
+	AD7293_CHAN_DAC(2),
+	AD7293_CHAN_DAC(3),
+	AD7293_CHAN_DAC(4),
+	AD7293_CHAN_DAC(5),
+	AD7293_CHAN_DAC(6),
+	AD7293_CHAN_DAC(7)
+};
+
+static int ad7293_soft_reset(struct ad7293_state *st)
+{
+	int ret;
+
+	ret = __ad7293_spi_write(st, AD7293_REG_SOFT_RESET, 0x7293);
+	if (ret)
+		return ret;
+
+	return __ad7293_spi_write(st, AD7293_REG_SOFT_RESET, 0x0000);
+}
+
+static int ad7293_reset(struct ad7293_state *st)
+{
+	if (st->gpio_reset) {
+		gpiod_set_value(st->gpio_reset, 0);
+		usleep_range(100, 1000);
+		gpiod_set_value(st->gpio_reset, 1);
+		usleep_range(100, 1000);
+
+		return 0;
+	}
+
+	/* Perform a software reset */
+	return ad7293_soft_reset(st);
+}
+
+static int ad7293_properties_parse(struct ad7293_state *st)
+{
+	struct spi_device *spi = st->spi;
+
+	st->gpio_reset = devm_gpiod_get_optional(&st->spi->dev, "reset",
+						 GPIOD_OUT_HIGH);
+	if (IS_ERR(st->gpio_reset))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->gpio_reset),
+				     "failed to get the reset GPIO\n");
+
+	st->reg_avdd = devm_regulator_get(&spi->dev, "avdd");
+	if (IS_ERR(st->reg_avdd))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->reg_avdd),
+				     "failed to get the AVDD voltage\n");
+
+	st->reg_vdrive = devm_regulator_get(&spi->dev, "vdrive");
+	if (IS_ERR(st->reg_vdrive))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->reg_vdrive),
+				     "failed to get the VDRIVE voltage\n");
+
+	return 0;
+}
+
+static void ad7293_reg_disable(void *data)
+{
+	regulator_disable(data);
+}
+
+static int ad7293_init(struct ad7293_state *st)
+{
+	int ret;
+	u16 chip_id;
+	struct spi_device *spi = st->spi;
+
+	ret = ad7293_properties_parse(st);
+	if (ret)
+		return ret;
+
+	ret = ad7293_reset(st);
+	if (ret)
+		return ret;
+
+	ret = regulator_enable(st->reg_avdd);
+	if (ret) {
+		dev_err(&spi->dev,
+			"Failed to enable specified AVDD Voltage!\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, ad7293_reg_disable,
+				       st->reg_avdd);
+	if (ret)
+		return ret;
+
+	ret = regulator_enable(st->reg_vdrive);
+	if (ret) {
+		dev_err(&spi->dev,
+			"Failed to enable specified VDRIVE Voltage!\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, ad7293_reg_disable,
+				       st->reg_vdrive);
+	if (ret)
+		return ret;
+
+	ret = regulator_get_voltage(st->reg_avdd);
+	if (ret < 0) {
+		dev_err(&spi->dev, "Failed to read avdd regulator: %d\n", ret);
+		return ret;
+	}
+
+	if (ret > 5500000 || ret < 4500000)
+		return -EINVAL;
+
+	ret = regulator_get_voltage(st->reg_vdrive);
+	if (ret < 0) {
+		dev_err(&spi->dev,
+			"Failed to read vdrive regulator: %d\n", ret);
+		return ret;
+	}
+	if (ret > 5500000 || ret < 1700000)
+		return -EINVAL;
+
+	/* Check Chip ID */
+	ret = __ad7293_spi_read(st, AD7293_REG_DEVICE_ID, &chip_id);
+	if (ret)
+		return ret;
+
+	if (chip_id != AD7293_CHIP_ID) {
+		dev_err(&spi->dev, "Invalid Chip ID.\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static const struct iio_info ad7293_info = {
+	.read_raw = ad7293_read_raw,
+	.write_raw = ad7293_write_raw,
+	.read_avail = &ad7293_read_avail,
+	.debugfs_reg_access = &ad7293_reg_access,
+};
+
+static int ad7293_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct ad7293_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	indio_dev->info = &ad7293_info;
+	indio_dev->name = "ad7293";
+	indio_dev->channels = ad7293_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ad7293_channels);
+
+	st->spi = spi;
+	st->page_select = 0;
+
+	mutex_init(&st->lock);
+
+	ret = ad7293_init(st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id ad7293_id[] = {
+	{ "ad7293", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ad7293_id);
+
+static const struct of_device_id ad7293_of_match[] = {
+	{ .compatible = "adi,ad7293" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ad7293_of_match);
+
+static struct spi_driver ad7293_driver = {
+	.driver = {
+		.name = "ad7293",
+		.of_match_table = ad7293_of_match,
+	},
+	.probe = ad7293_probe,
+	.id_table = ad7293_id,
+};
+module_spi_driver(ad7293_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com");
+MODULE_DESCRIPTION("Analog Devices AD7293");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/dac/ad7303.c b/drivers/iio/dac/ad7303.c
index 15af8a1cce3e..bff6bf697d9c 100644
--- a/drivers/iio/dac/ad7303.c
+++ b/drivers/iio/dac/ad7303.c
@@ -7,6 +7,7 @@
 
 #include <linux/err.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
@@ -16,8 +17,6 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
-#include <linux/platform_data/ad7303.h>
-
 #define AD7303_CFG_EXTERNAL_VREF BIT(15)
 #define AD7303_CFG_POWER_DOWN(ch) BIT(11 + (ch))
 #define AD7303_CFG_ADDR_OFFSET	10
@@ -29,6 +28,9 @@
  * @spi:		the device for this driver instance
  * @config:		cached config register value
  * @dac_cache:		current DAC raw value (chip does not support readback)
+ * @vdd_reg:		reference to VDD regulator
+ * @vref_reg:		reference to VREF regulator
+ * @lock:		protect writes and cache updates
  * @data:		spi transfer buffer
  */
 
@@ -42,10 +44,10 @@ struct ad7303_state {
 
 	struct mutex lock;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	__be16 data ____cacheline_aligned;
+	__be16 data __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad7303_write(struct ad7303_state *st, unsigned int chan,
@@ -63,7 +65,7 @@ static ssize_t ad7303_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ad7303_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", (bool)(st->config &
+	return sysfs_emit(buf, "%d\n", (bool)(st->config &
 		AD7303_CFG_POWER_DOWN(chan->channel)));
 }
 
@@ -75,7 +77,7 @@ static ssize_t ad7303_write_dac_powerdown(struct iio_dev *indio_dev,
 	bool pwr_down;
 	int ret;
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -196,6 +198,11 @@ static const struct iio_chan_spec ad7303_channels[] = {
 	AD7303_CHANNEL(1),
 };
 
+static void ad7303_reg_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int ad7303_probe(struct spi_device *spi)
 {
 	const struct spi_device_id *id = spi_get_device_id(spi);
@@ -208,7 +215,6 @@ static int ad7303_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);
-	spi_set_drvdata(spi, indio_dev);
 
 	st->spi = spi;
 
@@ -222,55 +228,38 @@ static int ad7303_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
+	ret = devm_add_action_or_reset(&spi->dev, ad7303_reg_disable, st->vdd_reg);
+	if (ret)
+		return ret;
+
 	st->vref_reg = devm_regulator_get_optional(&spi->dev, "REF");
 	if (IS_ERR(st->vref_reg)) {
 		ret = PTR_ERR(st->vref_reg);
 		if (ret != -ENODEV)
-			goto err_disable_vdd_reg;
+			return ret;
 		st->vref_reg = NULL;
 	}
 
 	if (st->vref_reg) {
 		ret = regulator_enable(st->vref_reg);
 		if (ret)
-			goto err_disable_vdd_reg;
+			return ret;
+
+		ret = devm_add_action_or_reset(&spi->dev, ad7303_reg_disable,
+					       st->vref_reg);
+		if (ret)
+			return ret;
 
 		st->config |= AD7303_CFG_EXTERNAL_VREF;
 	}
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &ad7303_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ad7303_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ad7303_channels);
 
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto err_disable_vref_reg;
-
-	return 0;
-
-err_disable_vref_reg:
-	if (st->vref_reg)
-		regulator_disable(st->vref_reg);
-err_disable_vdd_reg:
-	regulator_disable(st->vdd_reg);
-	return ret;
-}
-
-static int ad7303_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad7303_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	if (st->vref_reg)
-		regulator_disable(st->vref_reg);
-	regulator_disable(st->vdd_reg);
-
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct of_device_id ad7303_spi_of_match[] = {
@@ -288,10 +277,9 @@ MODULE_DEVICE_TABLE(spi, ad7303_spi_ids);
 static struct spi_driver ad7303_driver = {
 	.driver = {
 		.name = "ad7303",
-		.of_match_table = of_match_ptr(ad7303_spi_of_match),
+		.of_match_table = ad7303_spi_of_match,
 	},
 	.probe = ad7303_probe,
-	.remove = ad7303_remove,
 	.id_table = ad7303_spi_ids,
 };
 module_spi_driver(ad7303_driver);
diff --git a/drivers/iio/dac/ad8801.c b/drivers/iio/dac/ad8801.c
index 0789c9100a8f..919e8c880697 100644
--- a/drivers/iio/dac/ad8801.c
+++ b/drivers/iio/dac/ad8801.c
@@ -26,7 +26,7 @@ struct ad8801_state {
 	struct regulator *vrefh_reg;
 	struct regulator *vrefl_reg;
 
-	__be16 data ____cacheline_aligned;
+	__be16 data __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad8801_spi_write(struct ad8801_state *state,
@@ -123,10 +123,9 @@ static int ad8801_probe(struct spi_device *spi)
 	id = spi_get_device_id(spi);
 
 	state->vrefh_reg = devm_regulator_get(&spi->dev, "vrefh");
-	if (IS_ERR(state->vrefh_reg)) {
-		dev_err(&spi->dev, "Vrefh regulator not specified\n");
-		return PTR_ERR(state->vrefh_reg);
-	}
+	if (IS_ERR(state->vrefh_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(state->vrefh_reg),
+				     "Vrefh regulator not specified\n");
 
 	ret = regulator_enable(state->vrefh_reg);
 	if (ret) {
@@ -146,8 +145,8 @@ static int ad8801_probe(struct spi_device *spi)
 	if (id->driver_data == ID_AD8803) {
 		state->vrefl_reg = devm_regulator_get(&spi->dev, "vrefl");
 		if (IS_ERR(state->vrefl_reg)) {
-			dev_err(&spi->dev, "Vrefl regulator not specified\n");
-			ret = PTR_ERR(state->vrefl_reg);
+			ret = dev_err_probe(&spi->dev, PTR_ERR(state->vrefl_reg),
+					    "Vrefl regulator not specified\n");
 			goto error_disable_vrefh_reg;
 		}
 
@@ -171,7 +170,6 @@ static int ad8801_probe(struct spi_device *spi)
 	}
 
 	spi_set_drvdata(spi, indio_dev);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &ad8801_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ad8801_channels;
@@ -195,7 +193,7 @@ error_disable_vrefh_reg:
 	return ret;
 }
 
-static int ad8801_remove(struct spi_device *spi)
+static void ad8801_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ad8801_state *state = iio_priv(indio_dev);
@@ -204,8 +202,6 @@ static int ad8801_remove(struct spi_device *spi)
 	if (state->vrefl_reg)
 		regulator_disable(state->vrefl_reg);
 	regulator_disable(state->vrefh_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ad8801_ids[] = {
diff --git a/drivers/iio/dac/cio-dac.c b/drivers/iio/dac/cio-dac.c
index 81677795e57a..791dd999cf29 100644
--- a/drivers/iio/dac/cio-dac.c
+++ b/drivers/iio/dac/cio-dac.c
@@ -16,6 +16,7 @@
 #include <linux/isa.h>
 #include <linux/module.h>
 #include <linux/moduleparam.h>
+#include <linux/types.h>
 
 #define CIO_DAC_NUM_CHAN 16
 
@@ -37,11 +38,11 @@ MODULE_PARM_DESC(base, "Measurement Computing CIO-DAC base addresses");
 /**
  * struct cio_dac_iio - IIO device private data structure
  * @chan_out_states:	channels' output states
- * @base:		base port address of the IIO device
+ * @base:		base memory address of the DAC device
  */
 struct cio_dac_iio {
 	int chan_out_states[CIO_DAC_NUM_CHAN];
-	unsigned int base;
+	u16 __iomem *base;
 };
 
 static int cio_dac_read_raw(struct iio_dev *indio_dev,
@@ -61,7 +62,6 @@ static int cio_dac_write_raw(struct iio_dev *indio_dev,
 	struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
 	struct cio_dac_iio *const priv = iio_priv(indio_dev);
-	const unsigned int chan_addr_offset = 2 * chan->channel;
 
 	if (mask != IIO_CHAN_INFO_RAW)
 		return -EINVAL;
@@ -71,7 +71,7 @@ static int cio_dac_write_raw(struct iio_dev *indio_dev,
 		return -EINVAL;
 
 	priv->chan_out_states[chan->channel] = val;
-	outw(val, priv->base + chan_addr_offset);
+	iowrite16(val, priv->base + chan->channel);
 
 	return 0;
 }
@@ -105,19 +105,20 @@ static int cio_dac_probe(struct device *dev, unsigned int id)
 		return -EBUSY;
 	}
 
+	priv = iio_priv(indio_dev);
+	priv->base = devm_ioport_map(dev, base[id], CIO_DAC_EXTENT);
+	if (!priv->base)
+		return -ENOMEM;
+
 	indio_dev->info = &cio_dac_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = cio_dac_channels;
 	indio_dev->num_channels = CIO_DAC_NUM_CHAN;
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
-
-	priv = iio_priv(indio_dev);
-	priv->base = base[id];
 
 	/* initialize DAC outputs to 0V */
-	for (i = 0; i < 32; i += 2)
-		outw(0, base[id] + i);
+	for (i = 0; i < CIO_DAC_NUM_CHAN; i++)
+		iowrite16(0, priv->base + i);
 
 	return devm_iio_device_register(dev, indio_dev);
 }
diff --git a/drivers/iio/dac/dpot-dac.c b/drivers/iio/dac/dpot-dac.c
index 4a6111b7e86c..83ce9489259c 100644
--- a/drivers/iio/dac/dpot-dac.c
+++ b/drivers/iio/dac/dpot-dac.c
@@ -30,7 +30,7 @@
 #include <linux/iio/consumer.h>
 #include <linux/iio/iio.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 
@@ -74,11 +74,12 @@ static int dpot_dac_read_raw(struct iio_dev *indio_dev,
 		case IIO_VAL_INT:
 			/*
 			 * Convert integer scale to fractional scale by
-			 * setting the denominator (val2) to one, and...
+			 * setting the denominator (val2) to one...
 			 */
 			*val2 = 1;
 			ret = IIO_VAL_FRACTIONAL;
-			/* fall through */
+			/* ...and fall through. Say it again for GCC. */
+			fallthrough;
 		case IIO_VAL_FRACTIONAL:
 			*val *= regulator_get_voltage(dac->vref) / 1000;
 			*val2 *= dac->max_ohms;
@@ -177,25 +178,20 @@ static int dpot_dac_probe(struct platform_device *pdev)
 	dac = iio_priv(indio_dev);
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &dpot_dac_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = &dpot_dac_iio_channel;
 	indio_dev->num_channels = 1;
 
 	dac->vref = devm_regulator_get(dev, "vref");
-	if (IS_ERR(dac->vref)) {
-		if (PTR_ERR(dac->vref) != -EPROBE_DEFER)
-			dev_err(&pdev->dev, "failed to get vref regulator\n");
-		return PTR_ERR(dac->vref);
-	}
+	if (IS_ERR(dac->vref))
+		return dev_err_probe(&pdev->dev, PTR_ERR(dac->vref),
+				     "failed to get vref regulator\n");
 
 	dac->dpot = devm_iio_channel_get(dev, "dpot");
-	if (IS_ERR(dac->dpot)) {
-		if (PTR_ERR(dac->dpot) != -EPROBE_DEFER)
-			dev_err(dev, "failed to get dpot input channel\n");
-		return PTR_ERR(dac->dpot);
-	}
+	if (IS_ERR(dac->dpot))
+		return dev_err_probe(&pdev->dev, PTR_ERR(dac->dpot),
+				     "failed to get dpot input channel\n");
 
 	ret = iio_get_channel_type(dac->dpot, &type);
 	if (ret < 0)
diff --git a/drivers/iio/dac/ds4424.c b/drivers/iio/dac/ds4424.c
index 26d206681472..3e17a681174e 100644
--- a/drivers/iio/dac/ds4424.c
+++ b/drivers/iio/dac/ds4424.c
@@ -171,7 +171,7 @@ static int ds4424_verify_chip(struct iio_dev *indio_dev)
 	return ret;
 }
 
-static int __maybe_unused ds4424_suspend(struct device *dev)
+static int ds4424_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
@@ -189,7 +189,7 @@ static int __maybe_unused ds4424_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused ds4424_resume(struct device *dev)
+static int ds4424_resume(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
@@ -206,7 +206,7 @@ static int __maybe_unused ds4424_resume(struct device *dev)
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(ds4424_pm_ops, ds4424_suspend, ds4424_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ds4424_pm_ops, ds4424_suspend, ds4424_resume);
 
 static const struct iio_info ds4424_info = {
 	.read_raw = ds4424_read_raw,
@@ -230,16 +230,11 @@ static int ds4424_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 	indio_dev->name = id->name;
-	indio_dev->dev.of_node = client->dev.of_node;
-	indio_dev->dev.parent = &client->dev;
 
 	data->vcc_reg = devm_regulator_get(&client->dev, "vcc");
-	if (IS_ERR(data->vcc_reg)) {
-		dev_err(&client->dev,
-			"Failed to get vcc-supply regulator. err: %ld\n",
-				PTR_ERR(data->vcc_reg));
-		return PTR_ERR(data->vcc_reg);
-	}
+	if (IS_ERR(data->vcc_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vcc_reg),
+				     "Failed to get vcc-supply regulator.\n");
 
 	mutex_init(&data->lock);
 	ret = regulator_enable(data->vcc_reg);
@@ -286,15 +281,13 @@ fail:
 	return ret;
 }
 
-static int ds4424_remove(struct i2c_client *client)
+static void ds4424_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ds4424_data *data = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	regulator_disable(data->vcc_reg);
-
-	return 0;
 }
 
 static const struct i2c_device_id ds4424_id[] = {
@@ -317,7 +310,7 @@ static struct i2c_driver ds4424_driver = {
 	.driver = {
 		.name	= "ds4424",
 		.of_match_table = ds4424_of_match,
-		.pm     = &ds4424_pm_ops,
+		.pm     = pm_sleep_ptr(&ds4424_pm_ops),
 	},
 	.probe		= ds4424_probe,
 	.remove		= ds4424_remove,
diff --git a/drivers/iio/dac/lpc18xx_dac.c b/drivers/iio/dac/lpc18xx_dac.c
index 0ab357bd3633..60467c6f2c6e 100644
--- a/drivers/iio/dac/lpc18xx_dac.c
+++ b/drivers/iio/dac/lpc18xx_dac.c
@@ -16,9 +16,8 @@
 #include <linux/io.h>
 #include <linux/iopoll.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
 
@@ -121,19 +120,16 @@ static int lpc18xx_dac_probe(struct platform_device *pdev)
 		return PTR_ERR(dac->base);
 
 	dac->clk = devm_clk_get(&pdev->dev, NULL);
-	if (IS_ERR(dac->clk)) {
-		dev_err(&pdev->dev, "error getting clock\n");
-		return PTR_ERR(dac->clk);
-	}
+	if (IS_ERR(dac->clk))
+		return dev_err_probe(&pdev->dev, PTR_ERR(dac->clk),
+				     "error getting clock\n");
 
 	dac->vref = devm_regulator_get(&pdev->dev, "vref");
-	if (IS_ERR(dac->vref)) {
-		dev_err(&pdev->dev, "error getting regulator\n");
-		return PTR_ERR(dac->vref);
-	}
+	if (IS_ERR(dac->vref))
+		return dev_err_probe(&pdev->dev, PTR_ERR(dac->vref),
+				     "error getting regulator\n");
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &lpc18xx_dac_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = lpc18xx_dac_iio_channels;
diff --git a/drivers/iio/dac/ltc1660.c b/drivers/iio/dac/ltc1660.c
index 10866838c72a..2758fc8a5ad5 100644
--- a/drivers/iio/dac/ltc1660.c
+++ b/drivers/iio/dac/ltc1660.c
@@ -137,20 +137,21 @@ static const struct iio_info ltc1660_info = {
 	.write_raw = &ltc1660_write_raw,
 };
 
-static int __maybe_unused ltc1660_suspend(struct device *dev)
+static int ltc1660_suspend(struct device *dev)
 {
 	struct ltc1660_priv *priv = iio_priv(spi_get_drvdata(
 						to_spi_device(dev)));
 	return regmap_write(priv->regmap, LTC1660_REG_SLEEP, 0x00);
 }
 
-static int __maybe_unused ltc1660_resume(struct device *dev)
+static int ltc1660_resume(struct device *dev)
 {
 	struct ltc1660_priv *priv = iio_priv(spi_get_drvdata(
 						to_spi_device(dev)));
 	return regmap_write(priv->regmap, LTC1660_REG_WAKE, 0x00);
 }
-static SIMPLE_DEV_PM_OPS(ltc1660_pm_ops, ltc1660_suspend, ltc1660_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ltc1660_pm_ops, ltc1660_suspend,
+				ltc1660_resume);
 
 static int ltc1660_probe(struct spi_device *spi)
 {
@@ -172,10 +173,9 @@ static int ltc1660_probe(struct spi_device *spi)
 	}
 
 	priv->vref_reg = devm_regulator_get(&spi->dev, "vref");
-	if (IS_ERR(priv->vref_reg)) {
-		dev_err(&spi->dev, "vref regulator not specified\n");
-		return PTR_ERR(priv->vref_reg);
-	}
+	if (IS_ERR(priv->vref_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(priv->vref_reg),
+				     "vref regulator not specified\n");
 
 	ret = regulator_enable(priv->vref_reg);
 	if (ret) {
@@ -186,7 +186,6 @@ static int ltc1660_probe(struct spi_device *spi)
 
 	priv->spi = spi;
 	spi_set_drvdata(spi, indio_dev);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &ltc1660_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ltc1660_channels[id->driver_data];
@@ -208,15 +207,13 @@ error_disable_reg:
 	return ret;
 }
 
-static int ltc1660_remove(struct spi_device *spi)
+static void ltc1660_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ltc1660_priv *priv = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	regulator_disable(priv->vref_reg);
-
-	return 0;
 }
 
 static const struct of_device_id ltc1660_dt_ids[] = {
@@ -237,7 +234,7 @@ static struct spi_driver ltc1660_driver = {
 	.driver = {
 		.name = "ltc1660",
 		.of_match_table = ltc1660_dt_ids,
-		.pm = &ltc1660_pm_ops,
+		.pm = pm_sleep_ptr(&ltc1660_pm_ops),
 	},
 	.probe	= ltc1660_probe,
 	.remove = ltc1660_remove,
diff --git a/drivers/iio/dac/ltc2632.c b/drivers/iio/dac/ltc2632.c
index 643d1ce956ce..3a3c4f4874e4 100644
--- a/drivers/iio/dac/ltc2632.c
+++ b/drivers/iio/dac/ltc2632.c
@@ -10,12 +10,10 @@
 #include <linux/spi/spi.h>
 #include <linux/module.h>
 #include <linux/iio/iio.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
-#define LTC2632_DAC_CHANNELS                    2
-
-#define LTC2632_ADDR_DAC0                       0x0
-#define LTC2632_ADDR_DAC1                       0x1
+#include <asm/unaligned.h>
 
 #define LTC2632_CMD_WRITE_INPUT_N               0x0
 #define LTC2632_CMD_UPDATE_DAC_N                0x1
@@ -29,19 +27,21 @@
 /**
  * struct ltc2632_chip_info - chip specific information
  * @channels:		channel spec for the DAC
+ * @num_channels:	DAC channel count of the chip
  * @vref_mv:		internal reference voltage
  */
 struct ltc2632_chip_info {
 	const struct iio_chan_spec *channels;
+	const size_t num_channels;
 	const int vref_mv;
 };
 
 /**
  * struct ltc2632_state - driver instance specific data
  * @spi_dev:			pointer to the spi_device struct
- * @powerdown_cache_mask	used to show current channel powerdown state
- * @vref_mv			used reference voltage (internal or external)
- * @vref_reg		regulator for the reference voltage
+ * @powerdown_cache_mask:	used to show current channel powerdown state
+ * @vref_mv:			used reference voltage (internal or external)
+ * @vref_reg:		regulator for the reference voltage
  */
 struct ltc2632_state {
 	struct spi_device *spi_dev;
@@ -57,6 +57,18 @@ enum ltc2632_supported_device_ids {
 	ID_LTC2632H12,
 	ID_LTC2632H10,
 	ID_LTC2632H8,
+	ID_LTC2634L12,
+	ID_LTC2634L10,
+	ID_LTC2634L8,
+	ID_LTC2634H12,
+	ID_LTC2634H10,
+	ID_LTC2634H8,
+	ID_LTC2636L12,
+	ID_LTC2636L10,
+	ID_LTC2636L8,
+	ID_LTC2636H12,
+	ID_LTC2636H10,
+	ID_LTC2636H8,
 };
 
 static int ltc2632_spi_write(struct spi_device *spi,
@@ -73,9 +85,7 @@ static int ltc2632_spi_write(struct spi_device *spi,
 	 * 10-, 8-bit input code followed by 4, 6, or 8 don't care bits.
 	 */
 	data = (cmd << 20) | (addr << 16) | (val << shift);
-	msg[0] = data >> 16;
-	msg[1] = data >> 8;
-	msg[2] = data;
+	put_unaligned_be24(data, &msg[0]);
 
 	return spi_write(spi, msg, sizeof(msg));
 }
@@ -126,8 +136,8 @@ static ssize_t ltc2632_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct ltc2632_state *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n",
-		       !!(st->powerdown_cache_mask & (1 << chan->channel)));
+	return sysfs_emit(buf, "%d\n",
+			  !!(st->powerdown_cache_mask & (1 << chan->channel)));
 }
 
 static ssize_t ltc2632_write_dac_powerdown(struct iio_dev *indio_dev,
@@ -140,7 +150,7 @@ static ssize_t ltc2632_write_dac_powerdown(struct iio_dev *indio_dev,
 	int ret;
 	struct ltc2632_state *st = iio_priv(indio_dev);
 
-	ret = strtobool(buf, &pwr_down);
+	ret = kstrtobool(buf, &pwr_down);
 	if (ret)
 		return ret;
 
@@ -190,39 +200,107 @@ static const struct iio_chan_spec_ext_info ltc2632_ext_info[] = {
 	const struct iio_chan_spec _name ## _channels[] = { \
 		LTC2632_CHANNEL(0, _bits), \
 		LTC2632_CHANNEL(1, _bits), \
+		LTC2632_CHANNEL(2, _bits), \
+		LTC2632_CHANNEL(3, _bits), \
+		LTC2632_CHANNEL(4, _bits), \
+		LTC2632_CHANNEL(5, _bits), \
+		LTC2632_CHANNEL(6, _bits), \
+		LTC2632_CHANNEL(7, _bits), \
 	}
 
-static DECLARE_LTC2632_CHANNELS(ltc2632l12, 12);
-static DECLARE_LTC2632_CHANNELS(ltc2632l10, 10);
-static DECLARE_LTC2632_CHANNELS(ltc2632l8, 8);
-
-static DECLARE_LTC2632_CHANNELS(ltc2632h12, 12);
-static DECLARE_LTC2632_CHANNELS(ltc2632h10, 10);
-static DECLARE_LTC2632_CHANNELS(ltc2632h8, 8);
+static DECLARE_LTC2632_CHANNELS(ltc2632x12, 12);
+static DECLARE_LTC2632_CHANNELS(ltc2632x10, 10);
+static DECLARE_LTC2632_CHANNELS(ltc2632x8, 8);
 
 static const struct ltc2632_chip_info ltc2632_chip_info_tbl[] = {
 	[ID_LTC2632L12] = {
-		.channels	= ltc2632l12_channels,
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 2,
 		.vref_mv	= 2500,
 	},
 	[ID_LTC2632L10] = {
-		.channels	= ltc2632l10_channels,
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 2,
 		.vref_mv	= 2500,
 	},
 	[ID_LTC2632L8] =  {
-		.channels	= ltc2632l8_channels,
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 2,
 		.vref_mv	= 2500,
 	},
 	[ID_LTC2632H12] = {
-		.channels	= ltc2632h12_channels,
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 2,
 		.vref_mv	= 4096,
 	},
 	[ID_LTC2632H10] = {
-		.channels	= ltc2632h10_channels,
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 2,
 		.vref_mv	= 4096,
 	},
 	[ID_LTC2632H8] =  {
-		.channels	= ltc2632h8_channels,
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 2,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634L12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634L10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634L8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 4,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2634H12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634H10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2634H8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 4,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2636L12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 8,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2636L10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 8,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2636L8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 8,
+		.vref_mv	= 2500,
+	},
+	[ID_LTC2636H12] = {
+		.channels	= ltc2632x12_channels,
+		.num_channels	= 8,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2636H10] = {
+		.channels	= ltc2632x10_channels,
+		.num_channels	= 8,
+		.vref_mv	= 4096,
+	},
+	[ID_LTC2636H8] =  {
+		.channels	= ltc2632x8_channels,
+		.num_channels	= 8,
 		.vref_mv	= 4096,
 	},
 };
@@ -285,18 +363,16 @@ static int ltc2632_probe(struct spi_device *spi)
 		}
 	}
 
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->name = dev_of_node(&spi->dev) ? dev_of_node(&spi->dev)->name
-						 : spi_get_device_id(spi)->name;
+	indio_dev->name = fwnode_get_name(dev_fwnode(&spi->dev)) ?: spi_get_device_id(spi)->name;
 	indio_dev->info = &ltc2632_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = chip_info->channels;
-	indio_dev->num_channels = LTC2632_DAC_CHANNELS;
+	indio_dev->num_channels = chip_info->num_channels;
 
 	return iio_device_register(indio_dev);
 }
 
-static int ltc2632_remove(struct spi_device *spi)
+static void ltc2632_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ltc2632_state *st = iio_priv(indio_dev);
@@ -305,8 +381,6 @@ static int ltc2632_remove(struct spi_device *spi)
 
 	if (st->vref_reg)
 		regulator_disable(st->vref_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id ltc2632_id[] = {
@@ -316,6 +390,18 @@ static const struct spi_device_id ltc2632_id[] = {
 	{ "ltc2632-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H12] },
 	{ "ltc2632-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H10] },
 	{ "ltc2632-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2632H8] },
+	{ "ltc2634-l12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L12] },
+	{ "ltc2634-l10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L10] },
+	{ "ltc2634-l8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634L8] },
+	{ "ltc2634-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H12] },
+	{ "ltc2634-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H10] },
+	{ "ltc2634-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2634H8] },
+	{ "ltc2636-l12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L12] },
+	{ "ltc2636-l10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L10] },
+	{ "ltc2636-l8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636L8] },
+	{ "ltc2636-h12", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636H12] },
+	{ "ltc2636-h10", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636H10] },
+	{ "ltc2636-h8", (kernel_ulong_t)&ltc2632_chip_info_tbl[ID_LTC2636H8] },
 	{}
 };
 MODULE_DEVICE_TABLE(spi, ltc2632_id);
@@ -339,6 +425,42 @@ static const struct of_device_id ltc2632_of_match[] = {
 	}, {
 		.compatible = "lltc,ltc2632-h8",
 		.data = &ltc2632_chip_info_tbl[ID_LTC2632H8]
+	}, {
+		.compatible = "lltc,ltc2634-l12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L12]
+	}, {
+		.compatible = "lltc,ltc2634-l10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L10]
+	}, {
+		.compatible = "lltc,ltc2634-l8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634L8]
+	}, {
+		.compatible = "lltc,ltc2634-h12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H12]
+	}, {
+		.compatible = "lltc,ltc2634-h10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H10]
+	}, {
+		.compatible = "lltc,ltc2634-h8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2634H8]
+	}, {
+		.compatible = "lltc,ltc2636-l12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2636L12]
+	}, {
+		.compatible = "lltc,ltc2636-l10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2636L10]
+	}, {
+		.compatible = "lltc,ltc2636-l8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2636L8]
+	}, {
+		.compatible = "lltc,ltc2636-h12",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2636H12]
+	}, {
+		.compatible = "lltc,ltc2636-h10",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2636H10]
+	}, {
+		.compatible = "lltc,ltc2636-h8",
+		.data = &ltc2632_chip_info_tbl[ID_LTC2636H8]
 	},
 	{}
 };
@@ -347,7 +469,7 @@ MODULE_DEVICE_TABLE(of, ltc2632_of_match);
 static struct spi_driver ltc2632_driver = {
 	.driver		= {
 		.name	= "ltc2632",
-		.of_match_table = of_match_ptr(ltc2632_of_match),
+		.of_match_table = ltc2632_of_match,
 	},
 	.probe		= ltc2632_probe,
 	.remove		= ltc2632_remove,
diff --git a/drivers/iio/dac/ltc2688.c b/drivers/iio/dac/ltc2688.c
new file mode 100644
index 000000000000..28bdde2d3088
--- /dev/null
+++ b/drivers/iio/dac/ltc2688.c
@@ -0,0 +1,1070 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * LTC2688 16 channel, 16 bit Voltage Output SoftSpan DAC driver
+ *
+ * Copyright 2022 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/gpio/consumer.h>
+#include <linux/iio/iio.h>
+#include <linux/limits.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/of.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+
+#define LTC2688_DAC_CHANNELS			16
+
+#define LTC2688_CMD_CH_CODE(x)			(0x00 + (x))
+#define LTC2688_CMD_CH_SETTING(x)		(0x10 + (x))
+#define LTC2688_CMD_CH_OFFSET(x)		(0X20 + (x))
+#define LTC2688_CMD_CH_GAIN(x)			(0x30 + (x))
+#define LTC2688_CMD_CH_CODE_UPDATE(x)		(0x40 + (x))
+
+#define LTC2688_CMD_CONFIG			0x70
+#define LTC2688_CMD_POWERDOWN			0x71
+#define LTC2688_CMD_A_B_SELECT			0x72
+#define LTC2688_CMD_SW_TOGGLE			0x73
+#define LTC2688_CMD_TOGGLE_DITHER_EN		0x74
+#define LTC2688_CMD_THERMAL_STAT		0x77
+#define LTC2688_CMD_UPDATE_ALL			0x7C
+#define LTC2688_CMD_NOOP			0xFF
+
+#define LTC2688_READ_OPERATION			0x80
+
+/* Channel Settings */
+#define LTC2688_CH_SPAN_MSK			GENMASK(2, 0)
+#define LTC2688_CH_OVERRANGE_MSK		BIT(3)
+#define LTC2688_CH_TD_SEL_MSK			GENMASK(5, 4)
+#define LTC2688_CH_TGP_MAX			3
+#define LTC2688_CH_DIT_PER_MSK			GENMASK(8, 6)
+#define LTC2688_CH_DIT_PH_MSK			GENMASK(10, 9)
+#define LTC2688_CH_MODE_MSK			BIT(11)
+
+#define LTC2688_DITHER_RAW_MASK			GENMASK(15, 2)
+#define LTC2688_CH_CALIBBIAS_MASK		GENMASK(15, 2)
+#define LTC2688_DITHER_RAW_MAX_VAL		(BIT(14) - 1)
+#define LTC2688_CH_CALIBBIAS_MAX_VAL		(BIT(14) - 1)
+
+/* Configuration register */
+#define LTC2688_CONFIG_RST			BIT(15)
+#define LTC2688_CONFIG_EXT_REF			BIT(1)
+
+#define LTC2688_DITHER_FREQ_AVAIL_N		5
+
+enum {
+	LTC2688_SPAN_RANGE_0V_5V,
+	LTC2688_SPAN_RANGE_0V_10V,
+	LTC2688_SPAN_RANGE_M5V_5V,
+	LTC2688_SPAN_RANGE_M10V_10V,
+	LTC2688_SPAN_RANGE_M15V_15V,
+	LTC2688_SPAN_RANGE_MAX
+};
+
+enum {
+	LTC2688_MODE_DEFAULT,
+	LTC2688_MODE_DITHER_TOGGLE,
+};
+
+struct ltc2688_chan {
+	long dither_frequency[LTC2688_DITHER_FREQ_AVAIL_N];
+	bool overrange;
+	bool toggle_chan;
+	u8 mode;
+};
+
+struct ltc2688_state {
+	struct spi_device *spi;
+	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
+	struct ltc2688_chan channels[LTC2688_DAC_CHANNELS];
+	struct iio_chan_spec *iio_chan;
+	/* lock to protect against multiple access to the device and shared data */
+	struct mutex lock;
+	int vref;
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	u8 tx_data[6] __aligned(IIO_DMA_MINALIGN);
+	u8 rx_data[3];
+};
+
+static int ltc2688_spi_read(void *context, const void *reg, size_t reg_size,
+			    void *val, size_t val_size)
+{
+	struct ltc2688_state *st = context;
+	struct spi_transfer xfers[] = {
+		{
+			.tx_buf = st->tx_data,
+			.bits_per_word = 8,
+			.len = reg_size + val_size,
+			.cs_change = 1,
+		}, {
+			.tx_buf = st->tx_data + 3,
+			.rx_buf = st->rx_data,
+			.bits_per_word = 8,
+			.len = reg_size + val_size,
+		},
+	};
+	int ret;
+
+	memcpy(st->tx_data, reg, reg_size);
+
+	ret = spi_sync_transfer(st->spi, xfers, ARRAY_SIZE(xfers));
+	if (ret)
+		return ret;
+
+	memcpy(val, &st->rx_data[1], val_size);
+
+	return 0;
+}
+
+static int ltc2688_spi_write(void *context, const void *data, size_t count)
+{
+	struct ltc2688_state *st = context;
+
+	return spi_write(st->spi, data, count);
+}
+
+static int ltc2688_span_get(const struct ltc2688_state *st, int c)
+{
+	int ret, reg, span;
+
+	ret = regmap_read(st->regmap, LTC2688_CMD_CH_SETTING(c), &reg);
+	if (ret)
+		return ret;
+
+	span = FIELD_GET(LTC2688_CH_SPAN_MSK, reg);
+	/* sanity check to make sure we don't get any weird value from the HW */
+	if (span >= LTC2688_SPAN_RANGE_MAX)
+		return -EIO;
+
+	return span;
+}
+
+static const int ltc2688_span_helper[LTC2688_SPAN_RANGE_MAX][2] = {
+	{0, 5000}, {0, 10000}, {-5000, 5000}, {-10000, 10000}, {-15000, 15000},
+};
+
+static int ltc2688_scale_get(const struct ltc2688_state *st, int c, int *val)
+{
+	const struct ltc2688_chan *chan = &st->channels[c];
+	int span, fs;
+
+	span = ltc2688_span_get(st, c);
+	if (span < 0)
+		return span;
+
+	fs = ltc2688_span_helper[span][1] - ltc2688_span_helper[span][0];
+	if (chan->overrange)
+		fs = mult_frac(fs, 105, 100);
+
+	*val = DIV_ROUND_CLOSEST(fs * st->vref, 4096);
+
+	return 0;
+}
+
+static int ltc2688_offset_get(const struct ltc2688_state *st, int c, int *val)
+{
+	int span;
+
+	span = ltc2688_span_get(st, c);
+	if (span < 0)
+		return span;
+
+	if (ltc2688_span_helper[span][0] < 0)
+		*val = -32768;
+	else
+		*val = 0;
+
+	return 0;
+}
+
+enum {
+	LTC2688_INPUT_A,
+	LTC2688_INPUT_B,
+	LTC2688_INPUT_B_AVAIL,
+	LTC2688_DITHER_OFF,
+	LTC2688_DITHER_FREQ_AVAIL,
+};
+
+static int ltc2688_dac_code_write(struct ltc2688_state *st, u32 chan, u32 input,
+				  u16 code)
+{
+	struct ltc2688_chan *c = &st->channels[chan];
+	int ret, reg;
+
+	/* 2 LSBs set to 0 if writing dither amplitude */
+	if (!c->toggle_chan && input == LTC2688_INPUT_B) {
+		if (code > LTC2688_DITHER_RAW_MAX_VAL)
+			return -EINVAL;
+
+		code = FIELD_PREP(LTC2688_DITHER_RAW_MASK, code);
+	}
+
+	mutex_lock(&st->lock);
+	/* select the correct input register to read from */
+	ret = regmap_update_bits(st->regmap, LTC2688_CMD_A_B_SELECT, BIT(chan),
+				 input << chan);
+	if (ret)
+		goto out_unlock;
+
+	/*
+	 * If in dither/toggle mode the dac should be updated by an
+	 * external signal (or sw toggle) and not here.
+	 */
+	if (c->mode == LTC2688_MODE_DEFAULT)
+		reg = LTC2688_CMD_CH_CODE_UPDATE(chan);
+	else
+		reg = LTC2688_CMD_CH_CODE(chan);
+
+	ret = regmap_write(st->regmap, reg, code);
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int ltc2688_dac_code_read(struct ltc2688_state *st, u32 chan, u32 input,
+				 u32 *code)
+{
+	struct ltc2688_chan *c = &st->channels[chan];
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = regmap_update_bits(st->regmap, LTC2688_CMD_A_B_SELECT, BIT(chan),
+				 input << chan);
+	if (ret)
+		goto out_unlock;
+
+	ret = regmap_read(st->regmap, LTC2688_CMD_CH_CODE(chan), code);
+out_unlock:
+	mutex_unlock(&st->lock);
+
+	if (!c->toggle_chan && input == LTC2688_INPUT_B)
+		*code = FIELD_GET(LTC2688_DITHER_RAW_MASK, *code);
+
+	return ret;
+}
+
+static const int ltc2688_raw_range[] = {0, 1, U16_MAX};
+
+static int ltc2688_read_avail(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      const int **vals, int *type, int *length,
+			      long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		*vals = ltc2688_raw_range;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_RANGE;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ltc2688_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, int *val,
+			    int *val2, long info)
+{
+	struct ltc2688_state *st = iio_priv(indio_dev);
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ltc2688_dac_code_read(st, chan->channel, LTC2688_INPUT_A,
+					    val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		ret = ltc2688_offset_get(st, chan->channel, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		ret = ltc2688_scale_get(st, chan->channel, val);
+		if (ret)
+			return ret;
+
+		*val2 = 16;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = regmap_read(st->regmap,
+				  LTC2688_CMD_CH_OFFSET(chan->channel), val);
+		if (ret)
+			return ret;
+
+		*val = FIELD_GET(LTC2688_CH_CALIBBIAS_MASK, *val);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		ret = regmap_read(st->regmap,
+				  LTC2688_CMD_CH_GAIN(chan->channel), val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ltc2688_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int val,
+			     int val2, long info)
+{
+	struct ltc2688_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		if (val > U16_MAX || val < 0)
+			return -EINVAL;
+
+		return ltc2688_dac_code_write(st, chan->channel,
+					      LTC2688_INPUT_A, val);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		if (val > LTC2688_CH_CALIBBIAS_MAX_VAL)
+			return -EINVAL;
+
+		return regmap_write(st->regmap,
+				    LTC2688_CMD_CH_OFFSET(chan->channel),
+				    FIELD_PREP(LTC2688_CH_CALIBBIAS_MASK, val));
+	case IIO_CHAN_INFO_CALIBSCALE:
+		return regmap_write(st->regmap,
+				    LTC2688_CMD_CH_GAIN(chan->channel), val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t ltc2688_dither_toggle_set(struct iio_dev *indio_dev,
+					 uintptr_t private,
+					 const struct iio_chan_spec *chan,
+					 const char *buf, size_t len)
+{
+	struct ltc2688_state *st = iio_priv(indio_dev);
+	struct ltc2688_chan *c = &st->channels[chan->channel];
+	int ret;
+	bool en;
+
+	ret = kstrtobool(buf, &en);
+	if (ret)
+		return ret;
+
+	mutex_lock(&st->lock);
+	ret = regmap_update_bits(st->regmap, LTC2688_CMD_TOGGLE_DITHER_EN,
+				 BIT(chan->channel), en << chan->channel);
+	if (ret)
+		goto out_unlock;
+
+	c->mode = en ? LTC2688_MODE_DITHER_TOGGLE : LTC2688_MODE_DEFAULT;
+out_unlock:
+	mutex_unlock(&st->lock);
+
+	return ret ?: len;
+}
+
+static ssize_t ltc2688_reg_bool_get(struct iio_dev *indio_dev,
+				    uintptr_t private,
+				    const struct iio_chan_spec *chan,
+				    char *buf)
+{
+	const struct ltc2688_state *st = iio_priv(indio_dev);
+	int ret;
+	u32 val;
+
+	ret = regmap_read(st->regmap, private, &val);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%u\n", !!(val & BIT(chan->channel)));
+}
+
+static ssize_t ltc2688_reg_bool_set(struct iio_dev *indio_dev,
+				    uintptr_t private,
+				    const struct iio_chan_spec *chan,
+				    const char *buf, size_t len)
+{
+	const struct ltc2688_state *st = iio_priv(indio_dev);
+	int ret;
+	bool en;
+
+	ret = kstrtobool(buf, &en);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(st->regmap, private, BIT(chan->channel),
+				 en << chan->channel);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static ssize_t ltc2688_dither_freq_avail(const struct ltc2688_state *st,
+					 const struct ltc2688_chan *chan,
+					 char *buf)
+{
+	int sz = 0;
+	u32 f;
+
+	for (f = 0; f < ARRAY_SIZE(chan->dither_frequency); f++)
+		sz += sysfs_emit_at(buf, sz, "%ld ", chan->dither_frequency[f]);
+
+	buf[sz - 1] = '\n';
+
+	return sz;
+}
+
+static ssize_t ltc2688_dither_freq_get(struct iio_dev *indio_dev,
+				       uintptr_t private,
+				       const struct iio_chan_spec *chan,
+				       char *buf)
+{
+	const struct ltc2688_state *st = iio_priv(indio_dev);
+	const struct ltc2688_chan *c = &st->channels[chan->channel];
+	u32 reg, freq;
+	int ret;
+
+	if (private == LTC2688_DITHER_FREQ_AVAIL)
+		return ltc2688_dither_freq_avail(st, c, buf);
+
+	ret = regmap_read(st->regmap, LTC2688_CMD_CH_SETTING(chan->channel),
+			  &reg);
+	if (ret)
+		return ret;
+
+	freq = FIELD_GET(LTC2688_CH_DIT_PER_MSK, reg);
+	if (freq >= ARRAY_SIZE(c->dither_frequency))
+		return -EIO;
+
+	return sysfs_emit(buf, "%ld\n", c->dither_frequency[freq]);
+}
+
+static ssize_t ltc2688_dither_freq_set(struct iio_dev *indio_dev,
+				       uintptr_t private,
+				       const struct iio_chan_spec *chan,
+				       const char *buf, size_t len)
+{
+	const struct ltc2688_state *st = iio_priv(indio_dev);
+	const struct ltc2688_chan *c = &st->channels[chan->channel];
+	long val;
+	u32 freq;
+	int ret;
+
+	if (private == LTC2688_DITHER_FREQ_AVAIL)
+		return -EINVAL;
+
+	ret = kstrtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	for (freq = 0; freq < ARRAY_SIZE(c->dither_frequency); freq++) {
+		if (val == c->dither_frequency[freq])
+			break;
+	}
+
+	if (freq == ARRAY_SIZE(c->dither_frequency))
+		return -EINVAL;
+
+	ret = regmap_update_bits(st->regmap,
+				 LTC2688_CMD_CH_SETTING(chan->channel),
+				 LTC2688_CH_DIT_PER_MSK,
+				 FIELD_PREP(LTC2688_CH_DIT_PER_MSK, freq));
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static ssize_t ltc2688_dac_input_read(struct iio_dev *indio_dev,
+				      uintptr_t private,
+				      const struct iio_chan_spec *chan,
+				      char *buf)
+{
+	struct ltc2688_state *st = iio_priv(indio_dev);
+	int ret;
+	u32 val;
+
+	if (private == LTC2688_INPUT_B_AVAIL)
+		return sysfs_emit(buf, "[%u %u %u]\n", ltc2688_raw_range[0],
+				  ltc2688_raw_range[1],
+				  ltc2688_raw_range[2] / 4);
+
+	if (private == LTC2688_DITHER_OFF)
+		return sysfs_emit(buf, "0\n");
+
+	ret = ltc2688_dac_code_read(st, chan->channel, private, &val);
+	if (ret)
+		return ret;
+
+	return sysfs_emit(buf, "%u\n", val);
+}
+
+static ssize_t ltc2688_dac_input_write(struct iio_dev *indio_dev,
+				       uintptr_t private,
+				       const struct iio_chan_spec *chan,
+				       const char *buf, size_t len)
+{
+	struct ltc2688_state *st = iio_priv(indio_dev);
+	int ret;
+	u16 val;
+
+	if (private == LTC2688_INPUT_B_AVAIL || private == LTC2688_DITHER_OFF)
+		return -EINVAL;
+
+	ret = kstrtou16(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	ret = ltc2688_dac_code_write(st, chan->channel, private, val);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static int ltc2688_get_dither_phase(struct iio_dev *dev,
+				    const struct iio_chan_spec *chan)
+{
+	struct ltc2688_state *st = iio_priv(dev);
+	int ret, regval;
+
+	ret = regmap_read(st->regmap, LTC2688_CMD_CH_SETTING(chan->channel),
+			  &regval);
+	if (ret)
+		return ret;
+
+	return FIELD_GET(LTC2688_CH_DIT_PH_MSK, regval);
+}
+
+static int ltc2688_set_dither_phase(struct iio_dev *dev,
+				    const struct iio_chan_spec *chan,
+				    unsigned int phase)
+{
+	struct ltc2688_state *st = iio_priv(dev);
+
+	return regmap_update_bits(st->regmap,
+				  LTC2688_CMD_CH_SETTING(chan->channel),
+				  LTC2688_CH_DIT_PH_MSK,
+				  FIELD_PREP(LTC2688_CH_DIT_PH_MSK, phase));
+}
+
+static int ltc2688_reg_access(struct iio_dev *indio_dev,
+			      unsigned int reg,
+			      unsigned int writeval,
+			      unsigned int *readval)
+{
+	struct ltc2688_state *st = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(st->regmap, reg, readval);
+
+	return regmap_write(st->regmap, reg, writeval);
+}
+
+static const char * const ltc2688_dither_phase[] = {
+	"0", "1.5708", "3.14159", "4.71239",
+};
+
+static const struct iio_enum ltc2688_dither_phase_enum = {
+	.items = ltc2688_dither_phase,
+	.num_items = ARRAY_SIZE(ltc2688_dither_phase),
+	.set = ltc2688_set_dither_phase,
+	.get = ltc2688_get_dither_phase,
+};
+
+#define LTC2688_CHAN_EXT_INFO(_name, _what, _shared, _read, _write) {	\
+	.name = _name,							\
+	.read = (_read),						\
+	.write = (_write),						\
+	.private = (_what),						\
+	.shared = (_shared),						\
+}
+
+/*
+ * For toggle mode we only expose the symbol attr (sw_toggle) in case a TGPx is
+ * not provided in dts.
+ */
+static const struct iio_chan_spec_ext_info ltc2688_toggle_sym_ext_info[] = {
+	LTC2688_CHAN_EXT_INFO("raw0", LTC2688_INPUT_A, IIO_SEPARATE,
+			      ltc2688_dac_input_read, ltc2688_dac_input_write),
+	LTC2688_CHAN_EXT_INFO("raw1", LTC2688_INPUT_B, IIO_SEPARATE,
+			      ltc2688_dac_input_read, ltc2688_dac_input_write),
+	LTC2688_CHAN_EXT_INFO("toggle_en", LTC2688_CMD_TOGGLE_DITHER_EN,
+			      IIO_SEPARATE, ltc2688_reg_bool_get,
+			      ltc2688_dither_toggle_set),
+	LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE,
+			      ltc2688_reg_bool_get, ltc2688_reg_bool_set),
+	LTC2688_CHAN_EXT_INFO("symbol", LTC2688_CMD_SW_TOGGLE, IIO_SEPARATE,
+			      ltc2688_reg_bool_get, ltc2688_reg_bool_set),
+	{}
+};
+
+static const struct iio_chan_spec_ext_info ltc2688_toggle_ext_info[] = {
+	LTC2688_CHAN_EXT_INFO("raw0", LTC2688_INPUT_A, IIO_SEPARATE,
+			      ltc2688_dac_input_read, ltc2688_dac_input_write),
+	LTC2688_CHAN_EXT_INFO("raw1", LTC2688_INPUT_B, IIO_SEPARATE,
+			      ltc2688_dac_input_read, ltc2688_dac_input_write),
+	LTC2688_CHAN_EXT_INFO("toggle_en", LTC2688_CMD_TOGGLE_DITHER_EN,
+			      IIO_SEPARATE, ltc2688_reg_bool_get,
+			      ltc2688_dither_toggle_set),
+	LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE,
+			      ltc2688_reg_bool_get, ltc2688_reg_bool_set),
+	{}
+};
+
+static struct iio_chan_spec_ext_info ltc2688_dither_ext_info[] = {
+	LTC2688_CHAN_EXT_INFO("dither_raw", LTC2688_INPUT_B, IIO_SEPARATE,
+			      ltc2688_dac_input_read, ltc2688_dac_input_write),
+	LTC2688_CHAN_EXT_INFO("dither_raw_available", LTC2688_INPUT_B_AVAIL,
+			      IIO_SEPARATE, ltc2688_dac_input_read,
+			      ltc2688_dac_input_write),
+	LTC2688_CHAN_EXT_INFO("dither_offset", LTC2688_DITHER_OFF, IIO_SEPARATE,
+			      ltc2688_dac_input_read, ltc2688_dac_input_write),
+	/*
+	 * Not IIO_ENUM because the available freq needs to be computed at
+	 * probe. We could still use it, but it didn't felt much right.
+	 */
+	LTC2688_CHAN_EXT_INFO("dither_frequency", 0, IIO_SEPARATE,
+			      ltc2688_dither_freq_get, ltc2688_dither_freq_set),
+	LTC2688_CHAN_EXT_INFO("dither_frequency_available",
+			      LTC2688_DITHER_FREQ_AVAIL, IIO_SEPARATE,
+			      ltc2688_dither_freq_get, ltc2688_dither_freq_set),
+	IIO_ENUM("dither_phase", IIO_SEPARATE, &ltc2688_dither_phase_enum),
+	IIO_ENUM_AVAILABLE("dither_phase", IIO_SEPARATE,
+			   &ltc2688_dither_phase_enum),
+	LTC2688_CHAN_EXT_INFO("dither_en", LTC2688_CMD_TOGGLE_DITHER_EN,
+			      IIO_SEPARATE, ltc2688_reg_bool_get,
+			      ltc2688_dither_toggle_set),
+	LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE,
+			      ltc2688_reg_bool_get, ltc2688_reg_bool_set),
+	{}
+};
+
+static const struct iio_chan_spec_ext_info ltc2688_ext_info[] = {
+	LTC2688_CHAN_EXT_INFO("powerdown", LTC2688_CMD_POWERDOWN, IIO_SEPARATE,
+			      ltc2688_reg_bool_get, ltc2688_reg_bool_set),
+	{}
+};
+
+#define LTC2688_CHANNEL(_chan) {					\
+	.type = IIO_VOLTAGE,						\
+	.indexed = 1,							\
+	.output = 1,							\
+	.channel = (_chan),						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_CALIBSCALE) |		\
+		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_OFFSET) |	\
+		BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_RAW),	\
+	.info_mask_separate_available = BIT(IIO_CHAN_INFO_RAW),		\
+	.ext_info = ltc2688_ext_info,					\
+}
+
+static const struct iio_chan_spec ltc2688_channels[] = {
+	LTC2688_CHANNEL(0),
+	LTC2688_CHANNEL(1),
+	LTC2688_CHANNEL(2),
+	LTC2688_CHANNEL(3),
+	LTC2688_CHANNEL(4),
+	LTC2688_CHANNEL(5),
+	LTC2688_CHANNEL(6),
+	LTC2688_CHANNEL(7),
+	LTC2688_CHANNEL(8),
+	LTC2688_CHANNEL(9),
+	LTC2688_CHANNEL(10),
+	LTC2688_CHANNEL(11),
+	LTC2688_CHANNEL(12),
+	LTC2688_CHANNEL(13),
+	LTC2688_CHANNEL(14),
+	LTC2688_CHANNEL(15),
+};
+
+static void ltc2688_clk_disable(void *clk)
+{
+	clk_disable_unprepare(clk);
+}
+
+static const int ltc2688_period[LTC2688_DITHER_FREQ_AVAIL_N] = {
+	4, 8, 16, 32, 64,
+};
+
+static int ltc2688_tgp_clk_setup(struct ltc2688_state *st,
+				 struct ltc2688_chan *chan,
+				 struct fwnode_handle *node, int tgp)
+{
+	struct device *dev = &st->spi->dev;
+	unsigned long rate;
+	struct clk *clk;
+	int ret, f;
+
+	clk = devm_get_clk_from_child(dev, to_of_node(node), NULL);
+	if (IS_ERR(clk))
+		return dev_err_probe(dev, PTR_ERR(clk), "failed to get tgp clk.\n");
+
+	ret = clk_prepare_enable(clk);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to enable tgp clk.\n");
+
+	ret = devm_add_action_or_reset(dev, ltc2688_clk_disable, clk);
+	if (ret)
+		return ret;
+
+	if (chan->toggle_chan)
+		return 0;
+
+	/* calculate available dither frequencies */
+	rate = clk_get_rate(clk);
+	for (f = 0; f < ARRAY_SIZE(chan->dither_frequency); f++)
+		chan->dither_frequency[f] = DIV_ROUND_CLOSEST(rate, ltc2688_period[f]);
+
+	return 0;
+}
+
+static int ltc2688_span_lookup(const struct ltc2688_state *st, int min, int max)
+{
+	u32 span;
+
+	for (span = 0; span < ARRAY_SIZE(ltc2688_span_helper); span++) {
+		if (min == ltc2688_span_helper[span][0] &&
+		    max == ltc2688_span_helper[span][1])
+			return span;
+	}
+
+	return -EINVAL;
+}
+
+static int ltc2688_channel_config(struct ltc2688_state *st)
+{
+	struct device *dev = &st->spi->dev;
+	struct fwnode_handle *child;
+	u32 reg, clk_input, val, tmp[2];
+	int ret, span;
+
+	device_for_each_child_node(dev, child) {
+		struct ltc2688_chan *chan;
+
+		ret = fwnode_property_read_u32(child, "reg", &reg);
+		if (ret) {
+			fwnode_handle_put(child);
+			return dev_err_probe(dev, ret,
+					     "Failed to get reg property\n");
+		}
+
+		if (reg >= LTC2688_DAC_CHANNELS) {
+			fwnode_handle_put(child);
+			return dev_err_probe(dev, -EINVAL,
+					     "reg bigger than: %d\n",
+					     LTC2688_DAC_CHANNELS);
+		}
+
+		val = 0;
+		chan = &st->channels[reg];
+		if (fwnode_property_read_bool(child, "adi,toggle-mode")) {
+			chan->toggle_chan = true;
+			/* assume sw toggle ABI */
+			st->iio_chan[reg].ext_info = ltc2688_toggle_sym_ext_info;
+			/*
+			 * Clear IIO_CHAN_INFO_RAW bit as toggle channels expose
+			 * out_voltage_raw{0|1} files.
+			 */
+			__clear_bit(IIO_CHAN_INFO_RAW,
+				    &st->iio_chan[reg].info_mask_separate);
+		}
+
+		ret = fwnode_property_read_u32_array(child, "adi,output-range-microvolt",
+						     tmp, ARRAY_SIZE(tmp));
+		if (!ret) {
+			span = ltc2688_span_lookup(st, (int)tmp[0] / 1000,
+						   tmp[1] / 1000);
+			if (span < 0) {
+				fwnode_handle_put(child);
+				return dev_err_probe(dev, -EINVAL,
+						     "output range not valid:[%d %d]\n",
+						     tmp[0], tmp[1]);
+			}
+
+			val |= FIELD_PREP(LTC2688_CH_SPAN_MSK, span);
+		}
+
+		ret = fwnode_property_read_u32(child, "adi,toggle-dither-input",
+					       &clk_input);
+		if (!ret) {
+			if (clk_input >= LTC2688_CH_TGP_MAX) {
+				fwnode_handle_put(child);
+				return dev_err_probe(dev, -EINVAL,
+						     "toggle-dither-input inv value(%d)\n",
+						     clk_input);
+			}
+
+			ret = ltc2688_tgp_clk_setup(st, chan, child, clk_input);
+			if (ret) {
+				fwnode_handle_put(child);
+				return ret;
+			}
+
+			/*
+			 * 0 means software toggle which is the default mode.
+			 * Hence the +1.
+			 */
+			val |= FIELD_PREP(LTC2688_CH_TD_SEL_MSK, clk_input + 1);
+
+			/*
+			 * If a TGPx is given, we automatically assume a dither
+			 * capable channel (unless toggle is already enabled).
+			 * On top of this we just set here the dither bit in the
+			 * channel settings. It won't have any effect until the
+			 * global toggle/dither bit is enabled.
+			 */
+			if (!chan->toggle_chan) {
+				val |= FIELD_PREP(LTC2688_CH_MODE_MSK, 1);
+				st->iio_chan[reg].ext_info = ltc2688_dither_ext_info;
+			} else {
+				/* wait, no sw toggle after all */
+				st->iio_chan[reg].ext_info = ltc2688_toggle_ext_info;
+			}
+		}
+
+		if (fwnode_property_read_bool(child, "adi,overrange")) {
+			chan->overrange = true;
+			val |= LTC2688_CH_OVERRANGE_MSK;
+		}
+
+		if (!val)
+			continue;
+
+		ret = regmap_write(st->regmap, LTC2688_CMD_CH_SETTING(reg),
+				   val);
+		if (ret) {
+			fwnode_handle_put(child);
+			return dev_err_probe(dev, -EINVAL,
+					     "failed to set chan settings\n");
+		}
+	}
+
+	return 0;
+}
+
+static int ltc2688_setup(struct ltc2688_state *st, struct regulator *vref)
+{
+	struct device *dev = &st->spi->dev;
+	struct gpio_desc *gpio;
+	int ret;
+
+	/*
+	 * If we have a reset pin, use that to reset the board, If not, use
+	 * the reset bit.
+	 */
+	gpio = devm_gpiod_get_optional(dev, "clr", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio))
+		return dev_err_probe(dev, PTR_ERR(gpio), "Failed to get reset gpio");
+	if (gpio) {
+		usleep_range(1000, 1200);
+		/* bring device out of reset */
+		gpiod_set_value_cansleep(gpio, 0);
+	} else {
+		ret = regmap_update_bits(st->regmap, LTC2688_CMD_CONFIG,
+					 LTC2688_CONFIG_RST,
+					 LTC2688_CONFIG_RST);
+		if (ret)
+			return ret;
+	}
+
+	usleep_range(10000, 12000);
+
+	/*
+	 * Duplicate the default channel configuration as it can change during
+	 * @ltc2688_channel_config()
+	 */
+	st->iio_chan = devm_kmemdup(dev, ltc2688_channels,
+				    sizeof(ltc2688_channels), GFP_KERNEL);
+	if (!st->iio_chan)
+		return -ENOMEM;
+
+	ret = ltc2688_channel_config(st);
+	if (ret)
+		return ret;
+
+	if (!vref)
+		return 0;
+
+	return regmap_set_bits(st->regmap, LTC2688_CMD_CONFIG,
+			       LTC2688_CONFIG_EXT_REF);
+}
+
+static void ltc2688_disable_regulators(void *data)
+{
+	struct ltc2688_state *st = data;
+
+	regulator_bulk_disable(ARRAY_SIZE(st->regulators), st->regulators);
+}
+
+static void ltc2688_disable_regulator(void *regulator)
+{
+	regulator_disable(regulator);
+}
+
+static bool ltc2688_reg_readable(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTC2688_CMD_CH_CODE(0) ... LTC2688_CMD_CH_GAIN(15):
+		return true;
+	case LTC2688_CMD_CONFIG ... LTC2688_CMD_THERMAL_STAT:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltc2688_reg_writable(struct device *dev, unsigned int reg)
+{
+	/*
+	 * There's a jump from 0x76 to 0x78 in the write codes and the thermal
+	 * status code is 0x77 (which is read only) so that we need to check
+	 * that special condition.
+	 */
+	if (reg <= LTC2688_CMD_UPDATE_ALL && reg != LTC2688_CMD_THERMAL_STAT)
+		return true;
+
+	return false;
+}
+
+static struct regmap_bus ltc2688_regmap_bus = {
+	.read = ltc2688_spi_read,
+	.write = ltc2688_spi_write,
+	.read_flag_mask = LTC2688_READ_OPERATION,
+	.reg_format_endian_default = REGMAP_ENDIAN_BIG,
+	.val_format_endian_default = REGMAP_ENDIAN_BIG,
+};
+
+static const struct regmap_config ltc2688_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 16,
+	.readable_reg = ltc2688_reg_readable,
+	.writeable_reg = ltc2688_reg_writable,
+	/* ignoring the no op command */
+	.max_register = LTC2688_CMD_UPDATE_ALL,
+};
+
+static const struct iio_info ltc2688_info = {
+	.write_raw = ltc2688_write_raw,
+	.read_raw = ltc2688_read_raw,
+	.read_avail = ltc2688_read_avail,
+	.debugfs_reg_access = ltc2688_reg_access,
+};
+
+static int ltc2688_probe(struct spi_device *spi)
+{
+	struct ltc2688_state *st;
+	struct iio_dev *indio_dev;
+	struct regulator *vref_reg;
+	struct device *dev = &spi->dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	st->spi = spi;
+
+	/* Just write this once. No need to do it in every regmap read. */
+	st->tx_data[3] = LTC2688_CMD_NOOP;
+	mutex_init(&st->lock);
+
+	st->regmap = devm_regmap_init(dev, &ltc2688_regmap_bus, st,
+				      &ltc2688_regmap_config);
+	if (IS_ERR(st->regmap))
+		return dev_err_probe(dev, PTR_ERR(st->regmap),
+				     "Failed to init regmap");
+
+	st->regulators[0].supply = "vcc";
+	st->regulators[1].supply = "iovcc";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(st->regulators),
+				      st->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(st->regulators), st->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to enable regulators\n");
+
+	ret = devm_add_action_or_reset(dev, ltc2688_disable_regulators, st);
+	if (ret)
+		return ret;
+
+	vref_reg = devm_regulator_get_optional(dev, "vref");
+	if (IS_ERR(vref_reg)) {
+		if (PTR_ERR(vref_reg) != -ENODEV)
+			return dev_err_probe(dev, PTR_ERR(vref_reg),
+					     "Failed to get vref regulator");
+
+		vref_reg = NULL;
+		/* internal reference */
+		st->vref = 4096;
+	} else {
+		ret = regulator_enable(vref_reg);
+		if (ret)
+			return dev_err_probe(dev, ret,
+					     "Failed to enable vref regulators\n");
+
+		ret = devm_add_action_or_reset(dev, ltc2688_disable_regulator,
+					       vref_reg);
+		if (ret)
+			return ret;
+
+		ret = regulator_get_voltage(vref_reg);
+		if (ret < 0)
+			return dev_err_probe(dev, ret, "Failed to get vref\n");
+
+		st->vref = ret / 1000;
+	}
+
+	ret = ltc2688_setup(st, vref_reg);
+	if (ret)
+		return ret;
+
+	indio_dev->name = "ltc2688";
+	indio_dev->info = &ltc2688_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = st->iio_chan;
+	indio_dev->num_channels = ARRAY_SIZE(ltc2688_channels);
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static const struct of_device_id ltc2688_of_id[] = {
+	{ .compatible = "adi,ltc2688" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ltc2688_of_id);
+
+static const struct spi_device_id ltc2688_id[] = {
+	{ "ltc2688" },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, ltc2688_id);
+
+static struct spi_driver ltc2688_driver = {
+	.driver = {
+		.name = "ltc2688",
+		.of_match_table = ltc2688_of_id,
+	},
+	.probe = ltc2688_probe,
+	.id_table = ltc2688_id,
+};
+module_spi_driver(ltc2688_driver);
+
+MODULE_AUTHOR("Nuno Sá <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices LTC2688 DAC");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/dac/m62332.c b/drivers/iio/dac/m62332.c
index 3205ca98c32d..5a812f87970c 100644
--- a/drivers/iio/dac/m62332.c
+++ b/drivers/iio/dac/m62332.c
@@ -25,9 +25,7 @@ struct m62332_data {
 	struct regulator	*vcc;
 	struct mutex		mutex;
 	u8			raw[M62332_CHANNELS];
-#ifdef CONFIG_PM_SLEEP
 	u8			save[M62332_CHANNELS];
-#endif
 };
 
 static int m62332_set_value(struct iio_dev *indio_dev, u8 val, int channel)
@@ -124,7 +122,6 @@ static int m62332_write_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int m62332_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -156,11 +153,7 @@ static int m62332_resume(struct device *dev)
 	return m62332_set_value(indio_dev, data->save[1], 1);
 }
 
-static SIMPLE_DEV_PM_OPS(m62332_pm_ops, m62332_suspend, m62332_resume);
-#define M62332_PM_OPS (&m62332_pm_ops)
-#else
-#define M62332_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(m62332_pm_ops, m62332_suspend, m62332_resume);
 
 static const struct iio_info m62332_info = {
 	.read_raw = m62332_read_raw,
@@ -204,9 +197,6 @@ static int m62332_probe(struct i2c_client *client,
 	if (IS_ERR(data->vcc))
 		return PTR_ERR(data->vcc);
 
-	/* establish that the iio_dev is a child of the i2c device */
-	indio_dev->dev.parent = &client->dev;
-
 	indio_dev->num_channels = ARRAY_SIZE(m62332_channels);
 	indio_dev->channels = m62332_channels;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -228,7 +218,7 @@ err:
 	return ret;
 }
 
-static int m62332_remove(struct i2c_client *client)
+static void m62332_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
@@ -236,8 +226,6 @@ static int m62332_remove(struct i2c_client *client)
 	iio_map_array_unregister(indio_dev);
 	m62332_set_value(indio_dev, 0, 0);
 	m62332_set_value(indio_dev, 0, 1);
-
-	return 0;
 }
 
 static const struct i2c_device_id m62332_id[] = {
@@ -249,7 +237,7 @@ MODULE_DEVICE_TABLE(i2c, m62332_id);
 static struct i2c_driver m62332_driver = {
 	.driver = {
 		.name	= "m62332",
-		.pm	= M62332_PM_OPS,
+		.pm	= pm_sleep_ptr(&m62332_pm_ops),
 	},
 	.probe		= m62332_probe,
 	.remove		= m62332_remove,
diff --git a/drivers/iio/dac/max517.c b/drivers/iio/dac/max517.c
index 7e01838ef4d0..373ce6ff83b7 100644
--- a/drivers/iio/dac/max517.c
+++ b/drivers/iio/dac/max517.c
@@ -100,21 +100,21 @@ static int max517_write_raw(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static int __maybe_unused max517_suspend(struct device *dev)
+static int max517_suspend(struct device *dev)
 {
 	u8 outbuf = COMMAND_PD;
 
 	return i2c_master_send(to_i2c_client(dev), &outbuf, 1);
 }
 
-static int __maybe_unused max517_resume(struct device *dev)
+static int max517_resume(struct device *dev)
 {
 	u8 outbuf = 0;
 
 	return i2c_master_send(to_i2c_client(dev), &outbuf, 1);
 }
 
-static SIMPLE_DEV_PM_OPS(max517_pm_ops, max517_suspend, max517_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max517_pm_ops, max517_suspend, max517_resume);
 
 static const struct iio_info max517_info = {
 	.read_raw = max517_read_raw,
@@ -153,12 +153,8 @@ static int max517_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 	data = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	/* establish that the iio_dev is a child of the i2c device */
-	indio_dev->dev.parent = &client->dev;
-
 	switch (id->driver_data) {
 	case ID_MAX521:
 		indio_dev->num_channels = 8;
@@ -189,13 +185,7 @@ static int max517_probe(struct i2c_client *client,
 			data->vref_mv[chan] = platform_data->vref_mv[chan];
 	}
 
-	return iio_device_register(indio_dev);
-}
-
-static int max517_remove(struct i2c_client *client)
-{
-	iio_device_unregister(i2c_get_clientdata(client));
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id max517_id[] = {
@@ -211,10 +201,9 @@ MODULE_DEVICE_TABLE(i2c, max517_id);
 static struct i2c_driver max517_driver = {
 	.driver = {
 		.name	= MAX517_DRV_NAME,
-		.pm	= &max517_pm_ops,
+		.pm	= pm_sleep_ptr(&max517_pm_ops),
 	},
 	.probe		= max517_probe,
-	.remove		= max517_remove,
 	.id_table	= max517_id,
 };
 module_i2c_driver(max517_driver);
diff --git a/drivers/iio/dac/max5821.c b/drivers/iio/dac/max5821.c
index 2da086e372af..e001b594d5b1 100644
--- a/drivers/iio/dac/max5821.c
+++ b/drivers/iio/dac/max5821.c
@@ -84,7 +84,7 @@ static ssize_t max5821_read_dac_powerdown(struct iio_dev *indio_dev,
 {
 	struct max5821_data *st = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", st->powerdown[chan->channel]);
+	return sysfs_emit(buf, "%d\n", st->powerdown[chan->channel]);
 }
 
 static int max5821_sync_powerdown_mode(struct max5821_data *data,
@@ -116,7 +116,7 @@ static ssize_t max5821_write_dac_powerdown(struct iio_dev *indio_dev,
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 
@@ -137,7 +137,7 @@ static const struct iio_chan_spec_ext_info max5821_ext_info[] = {
 		.shared = IIO_SEPARATE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &max5821_powerdown_mode_enum),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &max5821_powerdown_mode_enum),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &max5821_powerdown_mode_enum),
 	{ },
 };
 
@@ -267,7 +267,7 @@ static int max5821_write_raw(struct iio_dev *indio_dev,
 	}
 }
 
-static int __maybe_unused max5821_suspend(struct device *dev)
+static int max5821_suspend(struct device *dev)
 {
 	u8 outbuf[2] = { MAX5821_EXTENDED_COMMAND_MODE,
 			 MAX5821_EXTENDED_DAC_A |
@@ -277,7 +277,7 @@ static int __maybe_unused max5821_suspend(struct device *dev)
 	return i2c_master_send(to_i2c_client(dev), outbuf, 2);
 }
 
-static int __maybe_unused max5821_resume(struct device *dev)
+static int max5821_resume(struct device *dev)
 {
 	u8 outbuf[2] = { MAX5821_EXTENDED_COMMAND_MODE,
 			 MAX5821_EXTENDED_DAC_A |
@@ -287,13 +287,19 @@ static int __maybe_unused max5821_resume(struct device *dev)
 	return i2c_master_send(to_i2c_client(dev), outbuf, 2);
 }
 
-static SIMPLE_DEV_PM_OPS(max5821_pm_ops, max5821_suspend, max5821_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(max5821_pm_ops, max5821_suspend,
+				max5821_resume);
 
 static const struct iio_info max5821_info = {
 	.read_raw = max5821_read_raw,
 	.write_raw = max5821_write_raw,
 };
 
+static void max5821_regulator_disable(void *reg)
+{
+	regulator_disable(reg);
+}
+
 static int max5821_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
@@ -306,7 +312,6 @@ static int max5821_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 	data = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 	mutex_init(&data->lock);
 
@@ -317,55 +322,41 @@ static int max5821_probe(struct i2c_client *client,
 	}
 
 	data->vref_reg = devm_regulator_get(&client->dev, "vref");
-	if (IS_ERR(data->vref_reg)) {
-		ret = PTR_ERR(data->vref_reg);
-		dev_err(&client->dev,
-			"Failed to get vref regulator: %d\n", ret);
-		goto error_free_reg;
-	}
+	if (IS_ERR(data->vref_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vref_reg),
+				     "Failed to get vref regulator\n");
 
 	ret = regulator_enable(data->vref_reg);
 	if (ret) {
 		dev_err(&client->dev,
 			"Failed to enable vref regulator: %d\n", ret);
-		goto error_free_reg;
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&client->dev, max5821_regulator_disable,
+				       data->vref_reg);
+	if (ret) {
+		dev_err(&client->dev,
+			"Failed to add action to managed regulator: %d\n", ret);
+		return ret;
 	}
 
 	ret = regulator_get_voltage(data->vref_reg);
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"Failed to get voltage on regulator: %d\n", ret);
-		goto error_disable_reg;
+		return ret;
 	}
 
 	data->vref_mv = ret / 1000;
 
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->num_channels = ARRAY_SIZE(max5821_channels);
 	indio_dev->channels = max5821_channels;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &max5821_info;
 
-	return iio_device_register(indio_dev);
-
-error_disable_reg:
-	regulator_disable(data->vref_reg);
-
-error_free_reg:
-
-	return ret;
-}
-
-static int max5821_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct max5821_data *data = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	regulator_disable(data->vref_reg);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id max5821_id[] = {
@@ -384,10 +375,9 @@ static struct i2c_driver max5821_driver = {
 	.driver = {
 		.name	= "max5821",
 		.of_match_table = max5821_of_match,
-		.pm     = &max5821_pm_ops,
+		.pm     = pm_sleep_ptr(&max5821_pm_ops),
 	},
 	.probe		= max5821_probe,
-	.remove		= max5821_remove,
 	.id_table	= max5821_id,
 };
 module_i2c_driver(max5821_driver);
diff --git a/drivers/iio/dac/mcp4725.c b/drivers/iio/dac/mcp4725.c
index ed455e801e80..446d1a8fe4be 100644
--- a/drivers/iio/dac/mcp4725.c
+++ b/drivers/iio/dac/mcp4725.c
@@ -16,8 +16,8 @@
 #include <linux/err.h>
 #include <linux/delay.h>
 #include <linux/regulator/consumer.h>
-#include <linux/of_device.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -42,7 +42,7 @@ struct mcp4725_data {
 	struct regulator *vref_reg;
 };
 
-static int __maybe_unused mcp4725_suspend(struct device *dev)
+static int mcp4725_suspend(struct device *dev)
 {
 	struct mcp4725_data *data = iio_priv(i2c_get_clientdata(
 		to_i2c_client(dev)));
@@ -55,7 +55,7 @@ static int __maybe_unused mcp4725_suspend(struct device *dev)
 	return i2c_master_send(data->client, outbuf, 2);
 }
 
-static int __maybe_unused mcp4725_resume(struct device *dev)
+static int mcp4725_resume(struct device *dev)
 {
 	struct mcp4725_data *data = iio_priv(i2c_get_clientdata(
 		to_i2c_client(dev)));
@@ -68,7 +68,8 @@ static int __maybe_unused mcp4725_resume(struct device *dev)
 
 	return i2c_master_send(data->client, outbuf, 2);
 }
-static SIMPLE_DEV_PM_OPS(mcp4725_pm_ops, mcp4725_suspend, mcp4725_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(mcp4725_pm_ops, mcp4725_suspend,
+				mcp4725_resume);
 
 static ssize_t mcp4725_store_eeprom(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
@@ -80,7 +81,7 @@ static ssize_t mcp4725_store_eeprom(struct device *dev,
 	bool state;
 	int ret;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 
@@ -167,7 +168,7 @@ static ssize_t mcp4725_read_powerdown(struct iio_dev *indio_dev,
 {
 	struct mcp4725_data *data = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", data->powerdown);
+	return sysfs_emit(buf, "%d\n", data->powerdown);
 }
 
 static ssize_t mcp4725_write_powerdown(struct iio_dev *indio_dev,
@@ -178,7 +179,7 @@ static ssize_t mcp4725_write_powerdown(struct iio_dev *indio_dev,
 	bool state;
 	int ret;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret)
 		return ret;
 
@@ -221,8 +222,8 @@ static const struct iio_chan_spec_ext_info mcp4725_ext_info[] = {
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE,
 			&mcp472x_powerdown_mode_enum[MCP4725]),
-	IIO_ENUM_AVAILABLE("powerdown_mode",
-			&mcp472x_powerdown_mode_enum[MCP4725]),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE,
+			   &mcp472x_powerdown_mode_enum[MCP4725]),
 	{ },
 };
 
@@ -235,8 +236,8 @@ static const struct iio_chan_spec_ext_info mcp4726_ext_info[] = {
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE,
 			&mcp472x_powerdown_mode_enum[MCP4726]),
-	IIO_ENUM_AVAILABLE("powerdown_mode",
-			&mcp472x_powerdown_mode_enum[MCP4726]),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE,
+			   &mcp472x_powerdown_mode_enum[MCP4726]),
 	{ },
 };
 
@@ -357,29 +358,16 @@ static const struct iio_info mcp4725_info = {
 	.attrs = &mcp4725_attribute_group,
 };
 
-#ifdef CONFIG_OF
 static int mcp4725_probe_dt(struct device *dev,
 			    struct mcp4725_platform_data *pdata)
 {
-	struct device_node *np = dev->of_node;
-
-	if (!np)
-		return -ENODEV;
-
 	/* check if is the vref-supply defined */
-	pdata->use_vref = of_property_read_bool(np, "vref-supply");
+	pdata->use_vref = device_property_read_bool(dev, "vref-supply");
 	pdata->vref_buffered =
-		of_property_read_bool(np, "microchip,vref-buffered");
+		device_property_read_bool(dev, "microchip,vref-buffered");
 
 	return 0;
 }
-#else
-static int mcp4725_probe_dt(struct device *dev,
-			    struct mcp4725_platform_data *platform_data)
-{
-	return -ENODEV;
-}
-#endif
 
 static int mcp4725_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
@@ -398,8 +386,8 @@ static int mcp4725_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
-	if (client->dev.of_node)
-		data->id = (enum chip_id)of_device_get_match_data(&client->dev);
+	if (dev_fwnode(&client->dev))
+		data->id = (uintptr_t)device_get_match_data(&client->dev);
 	else
 		data->id = id->driver_data;
 	pdata = dev_get_platdata(&client->dev);
@@ -453,7 +441,6 @@ static int mcp4725_probe(struct i2c_client *client,
 			goto err_disable_vdd_reg;
 	}
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &mcp4725_info;
 	indio_dev->channels = &mcp472x_channel[id->driver_data];
@@ -499,7 +486,7 @@ err_disable_vdd_reg:
 	return err;
 }
 
-static int mcp4725_remove(struct i2c_client *client)
+static void mcp4725_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mcp4725_data *data = iio_priv(indio_dev);
@@ -509,8 +496,6 @@ static int mcp4725_remove(struct i2c_client *client)
 	if (data->vref_reg)
 		regulator_disable(data->vref_reg);
 	regulator_disable(data->vdd_reg);
-
-	return 0;
 }
 
 static const struct i2c_device_id mcp4725_id[] = {
@@ -520,7 +505,6 @@ static const struct i2c_device_id mcp4725_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp4725_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id mcp4725_of_match[] = {
 	{
 		.compatible = "microchip,mcp4725",
@@ -533,13 +517,12 @@ static const struct of_device_id mcp4725_of_match[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(of, mcp4725_of_match);
-#endif
 
 static struct i2c_driver mcp4725_driver = {
 	.driver = {
 		.name	= MCP4725_DRV_NAME,
-		.of_match_table = of_match_ptr(mcp4725_of_match),
-		.pm	= &mcp4725_pm_ops,
+		.of_match_table = mcp4725_of_match,
+		.pm	= pm_sleep_ptr(&mcp4725_pm_ops),
 	},
 	.probe		= mcp4725_probe,
 	.remove		= mcp4725_remove,
diff --git a/drivers/iio/dac/mcp4922.c b/drivers/iio/dac/mcp4922.c
index f9194b3ddc9c..da4327624d45 100644
--- a/drivers/iio/dac/mcp4922.c
+++ b/drivers/iio/dac/mcp4922.c
@@ -17,10 +17,12 @@
 #include <linux/bitops.h>
 
 #define MCP4922_NUM_CHANNELS	2
+#define MCP4921_NUM_CHANNELS	1
 
 enum mcp4922_supported_device_ids {
 	ID_MCP4902,
 	ID_MCP4912,
+	ID_MCP4921,
 	ID_MCP4922,
 };
 
@@ -29,7 +31,7 @@ struct mcp4922_state {
 	unsigned int value[MCP4922_NUM_CHANNELS];
 	unsigned int vref_mv;
 	struct regulator *vref_reg;
-	u8 mosi[2] ____cacheline_aligned;
+	u8 mosi[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define MCP4922_CHAN(chan, bits) {			\
@@ -105,9 +107,10 @@ static int mcp4922_write_raw(struct iio_dev *indio_dev,
 	}
 }
 
-static const struct iio_chan_spec mcp4922_channels[3][MCP4922_NUM_CHANNELS] = {
+static const struct iio_chan_spec mcp4922_channels[4][MCP4922_NUM_CHANNELS] = {
 	[ID_MCP4902] = { MCP4922_CHAN(0, 8),	MCP4922_CHAN(1, 8) },
 	[ID_MCP4912] = { MCP4922_CHAN(0, 10),	MCP4922_CHAN(1, 10) },
+	[ID_MCP4921] = { MCP4922_CHAN(0, 12),	{} },
 	[ID_MCP4922] = { MCP4922_CHAN(0, 12),	MCP4922_CHAN(1, 12) },
 };
 
@@ -130,10 +133,9 @@ static int mcp4922_probe(struct spi_device *spi)
 	state = iio_priv(indio_dev);
 	state->spi = spi;
 	state->vref_reg = devm_regulator_get(&spi->dev, "vref");
-	if (IS_ERR(state->vref_reg)) {
-		dev_err(&spi->dev, "Vref regulator not specified\n");
-		return PTR_ERR(state->vref_reg);
-	}
+	if (IS_ERR(state->vref_reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(state->vref_reg),
+				     "Vref regulator not specified\n");
 
 	ret = regulator_enable(state->vref_reg);
 	if (ret) {
@@ -152,11 +154,13 @@ static int mcp4922_probe(struct spi_device *spi)
 
 	spi_set_drvdata(spi, indio_dev);
 	id = spi_get_device_id(spi);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &mcp4922_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mcp4922_channels[id->driver_data];
-	indio_dev->num_channels = MCP4922_NUM_CHANNELS;
+	if (id->driver_data == ID_MCP4921)
+		indio_dev->num_channels = MCP4921_NUM_CHANNELS;
+	else
+		indio_dev->num_channels = MCP4922_NUM_CHANNELS;
 	indio_dev->name = id->name;
 
 	ret = iio_device_register(indio_dev);
@@ -174,7 +178,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int mcp4922_remove(struct spi_device *spi)
+static void mcp4922_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct mcp4922_state *state;
@@ -182,13 +186,12 @@ static int mcp4922_remove(struct spi_device *spi)
 	iio_device_unregister(indio_dev);
 	state = iio_priv(indio_dev);
 	regulator_disable(state->vref_reg);
-
-	return 0;
 }
 
 static const struct spi_device_id mcp4922_id[] = {
 	{"mcp4902", ID_MCP4902},
 	{"mcp4912", ID_MCP4912},
+	{"mcp4921", ID_MCP4921},
 	{"mcp4922", ID_MCP4922},
 	{}
 };
diff --git a/drivers/iio/dac/stm32-dac-core.c b/drivers/iio/dac/stm32-dac-core.c
index 7e5809ba0dee..83bf184e3adc 100644
--- a/drivers/iio/dac/stm32-dac-core.c
+++ b/drivers/iio/dac/stm32-dac-core.c
@@ -90,7 +90,6 @@ static int stm32_dac_probe(struct platform_device *pdev)
 	const struct stm32_dac_cfg *cfg;
 	struct stm32_dac_priv *priv;
 	struct regmap *regmap;
-	struct resource *res;
 	void __iomem *mmio;
 	struct reset_control *rst;
 	int ret;
@@ -106,8 +105,7 @@ static int stm32_dac_probe(struct platform_device *pdev)
 	cfg = (const struct stm32_dac_cfg *)
 		of_match_device(dev->driver->of_match_table, dev)->data;
 
-	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	mmio = devm_ioremap_resource(dev, res);
+	mmio = devm_platform_ioremap_resource(pdev, 0);
 	if (IS_ERR(mmio))
 		return PTR_ERR(mmio);
 
@@ -118,18 +116,12 @@ static int stm32_dac_probe(struct platform_device *pdev)
 	priv->common.regmap = regmap;
 
 	priv->pclk = devm_clk_get(dev, "pclk");
-	if (IS_ERR(priv->pclk)) {
-		ret = PTR_ERR(priv->pclk);
-		dev_err(dev, "pclk get failed\n");
-		return ret;
-	}
+	if (IS_ERR(priv->pclk))
+		return dev_err_probe(dev, PTR_ERR(priv->pclk), "pclk get failed\n");
 
 	priv->vref = devm_regulator_get(dev, "vref");
-	if (IS_ERR(priv->vref)) {
-		ret = PTR_ERR(priv->vref);
-		dev_err(dev, "vref get failed, %d\n", ret);
-		return ret;
-	}
+	if (IS_ERR(priv->vref))
+		return dev_err_probe(dev, PTR_ERR(priv->vref), "vref get failed\n");
 
 	pm_runtime_get_noresume(dev);
 	pm_runtime_set_active(dev);
@@ -150,10 +142,7 @@ static int stm32_dac_probe(struct platform_device *pdev)
 	rst = devm_reset_control_get_optional_exclusive(dev, NULL);
 	if (rst) {
 		if (IS_ERR(rst)) {
-			ret = PTR_ERR(rst);
-			if (ret != -EPROBE_DEFER)
-				dev_err(dev, "reset get failed, %d\n", ret);
-
+			ret = dev_err_probe(dev, PTR_ERR(rst), "reset get failed\n");
 			goto err_hw_stop;
 		}
 
@@ -206,7 +195,7 @@ static int stm32_dac_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused stm32_dac_core_resume(struct device *dev)
+static int stm32_dac_core_resume(struct device *dev)
 {
 	struct stm32_dac_common *common = dev_get_drvdata(dev);
 	struct stm32_dac_priv *priv = to_stm32_dac_priv(common);
@@ -224,23 +213,23 @@ static int __maybe_unused stm32_dac_core_resume(struct device *dev)
 	return pm_runtime_force_resume(dev);
 }
 
-static int __maybe_unused stm32_dac_core_runtime_suspend(struct device *dev)
+static int stm32_dac_core_runtime_suspend(struct device *dev)
 {
 	stm32_dac_core_hw_stop(dev);
 
 	return 0;
 }
 
-static int __maybe_unused stm32_dac_core_runtime_resume(struct device *dev)
+static int stm32_dac_core_runtime_resume(struct device *dev)
 {
 	return stm32_dac_core_hw_start(dev);
 }
 
 static const struct dev_pm_ops stm32_dac_core_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, stm32_dac_core_resume)
-	SET_RUNTIME_PM_OPS(stm32_dac_core_runtime_suspend,
-			   stm32_dac_core_runtime_resume,
-			   NULL)
+	SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, stm32_dac_core_resume)
+	RUNTIME_PM_OPS(stm32_dac_core_runtime_suspend,
+		       stm32_dac_core_runtime_resume,
+		       NULL)
 };
 
 static const struct stm32_dac_cfg stm32h7_dac_cfg = {
@@ -264,7 +253,7 @@ static struct platform_driver stm32_dac_driver = {
 	.driver = {
 		.name = "stm32-dac-core",
 		.of_match_table = stm32_dac_of_match,
-		.pm = &stm32_dac_core_pm_ops,
+		.pm = pm_ptr(&stm32_dac_core_pm_ops),
 	},
 };
 module_platform_driver(stm32_dac_driver);
diff --git a/drivers/iio/dac/stm32-dac.c b/drivers/iio/dac/stm32-dac.c
index f22c1d9129b2..15eb44075107 100644
--- a/drivers/iio/dac/stm32-dac.c
+++ b/drivers/iio/dac/stm32-dac.c
@@ -12,8 +12,11 @@
 #include <linux/iio/iio.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pm_runtime.h>
+#include <linux/string_helpers.h>
 
 #include "stm32-dac-core.h"
 
@@ -26,9 +29,12 @@
 /**
  * struct stm32_dac - private data of DAC driver
  * @common:		reference to DAC common data
+ * @lock:		lock to protect against potential races when reading
+ *			and update CR, to keep it in sync with pm_runtime
  */
 struct stm32_dac {
 	struct stm32_dac_common *common;
+	struct mutex		lock;
 };
 
 static int stm32_dac_is_enabled(struct iio_dev *indio_dev, int channel)
@@ -58,27 +64,25 @@ static int stm32_dac_set_enable_state(struct iio_dev *indio_dev, int ch,
 	int ret;
 
 	/* already enabled / disabled ? */
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&dac->lock);
 	ret = stm32_dac_is_enabled(indio_dev, ch);
 	if (ret < 0 || enable == !!ret) {
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&dac->lock);
 		return ret < 0 ? ret : 0;
 	}
 
 	if (enable) {
-		ret = pm_runtime_get_sync(dev);
+		ret = pm_runtime_resume_and_get(dev);
 		if (ret < 0) {
-			pm_runtime_put_noidle(dev);
-			mutex_unlock(&indio_dev->mlock);
+			mutex_unlock(&dac->lock);
 			return ret;
 		}
 	}
 
 	ret = regmap_update_bits(dac->common->regmap, STM32_DAC_CR, msk, en);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&dac->lock);
 	if (ret < 0) {
-		dev_err(&indio_dev->dev, "%s failed\n", en ?
-			"Enable" : "Disable");
+		dev_err(&indio_dev->dev, "%s failed\n", str_enable_disable(en));
 		goto err_put_pm;
 	}
 
@@ -207,7 +211,7 @@ static ssize_t stm32_dac_read_powerdown(struct iio_dev *indio_dev,
 	if (ret < 0)
 		return ret;
 
-	return sprintf(buf, "%d\n", ret ? 0 : 1);
+	return sysfs_emit(buf, "%d\n", ret ? 0 : 1);
 }
 
 static ssize_t stm32_dac_write_powerdown(struct iio_dev *indio_dev,
@@ -218,7 +222,7 @@ static ssize_t stm32_dac_write_powerdown(struct iio_dev *indio_dev,
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 
@@ -244,7 +248,7 @@ static const struct iio_chan_spec_ext_info stm32_dac_ext_info[] = {
 		.shared = IIO_SEPARATE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &stm32_dac_powerdown_mode_en),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &stm32_dac_powerdown_mode_en),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &stm32_dac_powerdown_mode_en),
 	{},
 };
 
@@ -323,11 +327,12 @@ static int stm32_dac_probe(struct platform_device *pdev)
 	dac = iio_priv(indio_dev);
 	dac->common = dev_get_drvdata(pdev->dev.parent);
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &stm32_dac_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
+	mutex_init(&dac->lock);
+
 	ret = stm32_dac_chan_of_init(indio_dev);
 	if (ret < 0)
 		return ret;
@@ -369,7 +374,7 @@ static int stm32_dac_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused stm32_dac_suspend(struct device *dev)
+static int stm32_dac_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	int channel = indio_dev->channels[0].channel;
@@ -383,9 +388,8 @@ static int __maybe_unused stm32_dac_suspend(struct device *dev)
 	return pm_runtime_force_suspend(dev);
 }
 
-static const struct dev_pm_ops stm32_dac_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(stm32_dac_suspend, pm_runtime_force_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(stm32_dac_pm_ops, stm32_dac_suspend,
+				pm_runtime_force_resume);
 
 static const struct of_device_id stm32_dac_of_match[] = {
 	{ .compatible = "st,stm32-dac", },
@@ -399,7 +403,7 @@ static struct platform_driver stm32_dac_driver = {
 	.driver = {
 		.name = "stm32-dac",
 		.of_match_table = stm32_dac_of_match,
-		.pm = &stm32_dac_pm_ops,
+		.pm = pm_sleep_ptr(&stm32_dac_pm_ops),
 	},
 };
 module_platform_driver(stm32_dac_driver);
diff --git a/drivers/iio/dac/ti-dac082s085.c b/drivers/iio/dac/ti-dac082s085.c
index 57b498d2a2a5..8e1590e3cc8b 100644
--- a/drivers/iio/dac/ti-dac082s085.c
+++ b/drivers/iio/dac/ti-dac082s085.c
@@ -4,16 +4,17 @@
  *
  * Copyright (C) 2017 KUNBUS GmbH
  *
- * http://www.ti.com/lit/ds/symlink/dac082s085.pdf
- * http://www.ti.com/lit/ds/symlink/dac102s085.pdf
- * http://www.ti.com/lit/ds/symlink/dac122s085.pdf
- * http://www.ti.com/lit/ds/symlink/dac084s085.pdf
- * http://www.ti.com/lit/ds/symlink/dac104s085.pdf
- * http://www.ti.com/lit/ds/symlink/dac124s085.pdf
+ * https://www.ti.com/lit/ds/symlink/dac082s085.pdf
+ * https://www.ti.com/lit/ds/symlink/dac102s085.pdf
+ * https://www.ti.com/lit/ds/symlink/dac122s085.pdf
+ * https://www.ti.com/lit/ds/symlink/dac084s085.pdf
+ * https://www.ti.com/lit/ds/symlink/dac104s085.pdf
+ * https://www.ti.com/lit/ds/symlink/dac124s085.pdf
  */
 
 #include <linux/iio/iio.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/regulator/consumer.h>
 #include <linux/spi/spi.h>
 
@@ -54,7 +55,7 @@ struct ti_dac_chip {
 	bool powerdown;
 	u8 powerdown_mode;
 	u8 resolution;
-	u8 buf[2] ____cacheline_aligned;
+	u8 buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define WRITE_NOT_UPDATE(chan)	(0x00 | (chan) << 6)
@@ -120,7 +121,7 @@ static ssize_t ti_dac_read_powerdown(struct iio_dev *indio_dev,
 {
 	struct ti_dac_chip *ti_dac = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", ti_dac->powerdown);
+	return sysfs_emit(buf, "%d\n", ti_dac->powerdown);
 }
 
 static ssize_t ti_dac_write_powerdown(struct iio_dev *indio_dev,
@@ -132,7 +133,7 @@ static ssize_t ti_dac_write_powerdown(struct iio_dev *indio_dev,
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 
@@ -159,7 +160,7 @@ static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = {
 		.shared	   = IIO_SHARED_BY_TYPE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ti_dac_powerdown_mode),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
 	{ },
 };
 
@@ -268,7 +269,6 @@ static int ti_dac_probe(struct spi_device *spi)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &ti_dac_info;
 	indio_dev->name = spi->modalias;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -313,7 +313,7 @@ err:
 	return ret;
 }
 
-static int ti_dac_remove(struct spi_device *spi)
+static void ti_dac_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ti_dac_chip *ti_dac = iio_priv(indio_dev);
@@ -321,11 +321,8 @@ static int ti_dac_remove(struct spi_device *spi)
 	iio_device_unregister(indio_dev);
 	mutex_destroy(&ti_dac->lock);
 	regulator_disable(ti_dac->vref);
-
-	return 0;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id ti_dac_of_id[] = {
 	{ .compatible = "ti,dac082s085" },
 	{ .compatible = "ti,dac102s085" },
@@ -336,7 +333,6 @@ static const struct of_device_id ti_dac_of_id[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ti_dac_of_id);
-#endif
 
 static const struct spi_device_id ti_dac_spi_id[] = {
 	{ "dac082s085", dual_8bit  },
@@ -352,7 +348,7 @@ MODULE_DEVICE_TABLE(spi, ti_dac_spi_id);
 static struct spi_driver ti_dac_driver = {
 	.driver = {
 		.name		= "ti-dac082s085",
-		.of_match_table	= of_match_ptr(ti_dac_of_id),
+		.of_match_table	= ti_dac_of_id,
 	},
 	.probe	  = ti_dac_probe,
 	.remove   = ti_dac_remove,
diff --git a/drivers/iio/dac/ti-dac5571.c b/drivers/iio/dac/ti-dac5571.c
index 3a2bb0efe50d..3210e3098f9a 100644
--- a/drivers/iio/dac/ti-dac5571.c
+++ b/drivers/iio/dac/ti-dac5571.c
@@ -4,22 +4,23 @@
  *
  * Copyright (C) 2018 Prevas A/S
  *
- * http://www.ti.com/lit/ds/symlink/dac5571.pdf
- * http://www.ti.com/lit/ds/symlink/dac6571.pdf
- * http://www.ti.com/lit/ds/symlink/dac7571.pdf
- * http://www.ti.com/lit/ds/symlink/dac5574.pdf
- * http://www.ti.com/lit/ds/symlink/dac6574.pdf
- * http://www.ti.com/lit/ds/symlink/dac7574.pdf
- * http://www.ti.com/lit/ds/symlink/dac5573.pdf
- * http://www.ti.com/lit/ds/symlink/dac6573.pdf
- * http://www.ti.com/lit/ds/symlink/dac7573.pdf
+ * https://www.ti.com/lit/ds/symlink/dac5571.pdf
+ * https://www.ti.com/lit/ds/symlink/dac6571.pdf
+ * https://www.ti.com/lit/ds/symlink/dac7571.pdf
+ * https://www.ti.com/lit/ds/symlink/dac5574.pdf
+ * https://www.ti.com/lit/ds/symlink/dac6574.pdf
+ * https://www.ti.com/lit/ds/symlink/dac7574.pdf
+ * https://www.ti.com/lit/ds/symlink/dac5573.pdf
+ * https://www.ti.com/lit/ds/symlink/dac6573.pdf
+ * https://www.ti.com/lit/ds/symlink/dac7573.pdf
+ * https://www.ti.com/lit/ds/symlink/dac121c081.pdf
  */
 
 #include <linux/iio/iio.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 
 enum chip_id {
@@ -47,12 +48,12 @@ struct dac5571_data {
 	struct mutex lock;
 	struct regulator *vref;
 	u16 val[4];
-	bool powerdown;
-	u8 powerdown_mode;
+	bool powerdown[4];
+	u8 powerdown_mode[4];
 	struct dac5571_spec const *spec;
 	int (*dac5571_cmd)(struct dac5571_data *data, int channel, u16 val);
 	int (*dac5571_pwrdwn)(struct dac5571_data *data, int channel, u8 pwrdwn);
-	u8 buf[3] ____cacheline_aligned;
+	u8 buf[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define DAC5571_POWERDOWN(mode)		((mode) + 1)
@@ -125,7 +126,7 @@ static int dac5571_get_powerdown_mode(struct iio_dev *indio_dev,
 {
 	struct dac5571_data *data = iio_priv(indio_dev);
 
-	return data->powerdown_mode;
+	return data->powerdown_mode[chan->channel];
 }
 
 static int dac5571_set_powerdown_mode(struct iio_dev *indio_dev,
@@ -135,17 +136,17 @@ static int dac5571_set_powerdown_mode(struct iio_dev *indio_dev,
 	struct dac5571_data *data = iio_priv(indio_dev);
 	int ret = 0;
 
-	if (data->powerdown_mode == mode)
+	if (data->powerdown_mode[chan->channel] == mode)
 		return 0;
 
 	mutex_lock(&data->lock);
-	if (data->powerdown) {
+	if (data->powerdown[chan->channel]) {
 		ret = data->dac5571_pwrdwn(data, chan->channel,
 					   DAC5571_POWERDOWN(mode));
 		if (ret)
 			goto out;
 	}
-	data->powerdown_mode = mode;
+	data->powerdown_mode[chan->channel] = mode;
 
  out:
 	mutex_unlock(&data->lock);
@@ -167,7 +168,7 @@ static ssize_t dac5571_read_powerdown(struct iio_dev *indio_dev,
 {
 	struct dac5571_data *data = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", data->powerdown);
+	return sysfs_emit(buf, "%d\n", data->powerdown[chan->channel]);
 }
 
 static ssize_t dac5571_write_powerdown(struct iio_dev *indio_dev,
@@ -179,23 +180,24 @@ static ssize_t dac5571_write_powerdown(struct iio_dev *indio_dev,
 	bool powerdown;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 
-	if (data->powerdown == powerdown)
+	if (data->powerdown[chan->channel] == powerdown)
 		return len;
 
 	mutex_lock(&data->lock);
 	if (powerdown)
 		ret = data->dac5571_pwrdwn(data, chan->channel,
-			    DAC5571_POWERDOWN(data->powerdown_mode));
+			    DAC5571_POWERDOWN(data->powerdown_mode[chan->channel]));
 	else
-		ret = data->dac5571_cmd(data, chan->channel, data->val[0]);
+		ret = data->dac5571_cmd(data, chan->channel,
+				data->val[chan->channel]);
 	if (ret)
 		goto out;
 
-	data->powerdown = powerdown;
+	data->powerdown[chan->channel] = powerdown;
 
  out:
 	mutex_unlock(&data->lock);
@@ -209,10 +211,10 @@ static const struct iio_chan_spec_ext_info dac5571_ext_info[] = {
 		.name	   = "powerdown",
 		.read	   = dac5571_read_powerdown,
 		.write	   = dac5571_write_powerdown,
-		.shared	   = IIO_SHARED_BY_TYPE,
+		.shared	   = IIO_SEPARATE,
 	},
-	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &dac5571_powerdown_mode),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &dac5571_powerdown_mode),
+	IIO_ENUM("powerdown_mode", IIO_SEPARATE, &dac5571_powerdown_mode),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &dac5571_powerdown_mode),
 	{},
 };
 
@@ -276,7 +278,7 @@ static int dac5571_write_raw(struct iio_dev *indio_dev,
 		if (val >= (1 << data->spec->resolution) || val < 0)
 			return -EINVAL;
 
-		if (data->powerdown)
+		if (data->powerdown[chan->channel])
 			return -EBUSY;
 
 		mutex_lock(&data->lock);
@@ -311,6 +313,7 @@ static int dac5571_probe(struct i2c_client *client,
 	const struct dac5571_spec *spec;
 	struct dac5571_data *data;
 	struct iio_dev *indio_dev;
+	enum chip_id chip_id;
 	int ret, i;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
@@ -321,14 +324,18 @@ static int dac5571_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->info = &dac5571_info;
 	indio_dev->name = id->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = dac5571_channels;
 
-	spec = &dac5571_spec[id->driver_data];
+	if (dev_fwnode(dev))
+		chip_id = (uintptr_t)device_get_match_data(dev);
+	else
+		chip_id = id->driver_data;
+
+	spec = &dac5571_spec[chip_id];
+
 	indio_dev->num_channels = spec->num_channels;
 	data->spec = spec;
 
@@ -352,6 +359,7 @@ static int dac5571_probe(struct i2c_client *client,
 		data->dac5571_pwrdwn = dac5571_pwrdwn_quad;
 		break;
 	default:
+		ret = -EINVAL;
 		goto err;
 	}
 
@@ -374,32 +382,29 @@ static int dac5571_probe(struct i2c_client *client,
 	return ret;
 }
 
-static int dac5571_remove(struct i2c_client *i2c)
+static void dac5571_remove(struct i2c_client *i2c)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(i2c);
 	struct dac5571_data *data = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	regulator_disable(data->vref);
-
-	return 0;
 }
 
-#ifdef CONFIG_OF
 static const struct of_device_id dac5571_of_id[] = {
-	{.compatible = "ti,dac5571"},
-	{.compatible = "ti,dac6571"},
-	{.compatible = "ti,dac7571"},
-	{.compatible = "ti,dac5574"},
-	{.compatible = "ti,dac6574"},
-	{.compatible = "ti,dac7574"},
-	{.compatible = "ti,dac5573"},
-	{.compatible = "ti,dac6573"},
-	{.compatible = "ti,dac7573"},
+	{.compatible = "ti,dac5571", .data = (void *)single_8bit},
+	{.compatible = "ti,dac6571", .data = (void *)single_10bit},
+	{.compatible = "ti,dac7571", .data = (void *)single_12bit},
+	{.compatible = "ti,dac5574", .data = (void *)quad_8bit},
+	{.compatible = "ti,dac6574", .data = (void *)quad_10bit},
+	{.compatible = "ti,dac7574", .data = (void *)quad_12bit},
+	{.compatible = "ti,dac5573", .data = (void *)quad_8bit},
+	{.compatible = "ti,dac6573", .data = (void *)quad_10bit},
+	{.compatible = "ti,dac7573", .data = (void *)quad_12bit},
+	{.compatible = "ti,dac121c081", .data = (void *)single_12bit},
 	{}
 };
 MODULE_DEVICE_TABLE(of, dac5571_of_id);
-#endif
 
 static const struct i2c_device_id dac5571_id[] = {
 	{"dac5571", single_8bit},
@@ -411,6 +416,7 @@ static const struct i2c_device_id dac5571_id[] = {
 	{"dac5573", quad_8bit},
 	{"dac6573", quad_10bit},
 	{"dac7573", quad_12bit},
+	{"dac121c081", single_12bit},
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, dac5571_id);
@@ -418,7 +424,7 @@ MODULE_DEVICE_TABLE(i2c, dac5571_id);
 static struct i2c_driver dac5571_driver = {
 	.driver = {
 		   .name = "ti-dac5571",
-		   .of_match_table = of_match_ptr(dac5571_of_id),
+		   .of_match_table = dac5571_of_id,
 	},
 	.probe	  = dac5571_probe,
 	.remove   = dac5571_remove,
diff --git a/drivers/iio/dac/ti-dac7311.c b/drivers/iio/dac/ti-dac7311.c
index 6f5df1a30a1c..7f89d2a52f49 100644
--- a/drivers/iio/dac/ti-dac7311.c
+++ b/drivers/iio/dac/ti-dac7311.c
@@ -3,7 +3,7 @@
  *
  * Copyright (C) 2018 CMC NV
  *
- * http://www.ti.com/lit/ds/symlink/dac7311.pdf
+ * https://www.ti.com/lit/ds/symlink/dac7311.pdf
  */
 
 #include <linux/iio/iio.h>
@@ -52,7 +52,7 @@ struct ti_dac_chip {
 	bool powerdown;
 	u8 powerdown_mode;
 	u8 resolution;
-	u8 buf[2] ____cacheline_aligned;
+	u8 buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static u8 ti_dac_get_power(struct ti_dac_chip *ti_dac, bool powerdown)
@@ -110,7 +110,7 @@ static ssize_t ti_dac_read_powerdown(struct iio_dev *indio_dev,
 {
 	struct ti_dac_chip *ti_dac = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", ti_dac->powerdown);
+	return sysfs_emit(buf, "%d\n", ti_dac->powerdown);
 }
 
 static ssize_t ti_dac_write_powerdown(struct iio_dev *indio_dev,
@@ -123,7 +123,7 @@ static ssize_t ti_dac_write_powerdown(struct iio_dev *indio_dev,
 	u8 power;
 	int ret;
 
-	ret = strtobool(buf, &powerdown);
+	ret = kstrtobool(buf, &powerdown);
 	if (ret)
 		return ret;
 
@@ -146,7 +146,7 @@ static const struct iio_chan_spec_ext_info ti_dac_ext_info[] = {
 		.shared	   = IIO_SHARED_BY_TYPE,
 	},
 	IIO_ENUM("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
-	IIO_ENUM_AVAILABLE("powerdown_mode", &ti_dac_powerdown_mode),
+	IIO_ENUM_AVAILABLE("powerdown_mode", IIO_SHARED_BY_TYPE, &ti_dac_powerdown_mode),
 	{ },
 };
 
@@ -251,8 +251,6 @@ static int ti_dac_probe(struct spi_device *spi)
 	spi->bits_per_word = 16;
 	spi_setup(spi);
 
-	indio_dev->dev.parent = dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->info = &ti_dac_info;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -268,10 +266,9 @@ static int ti_dac_probe(struct spi_device *spi)
 	ti_dac->resolution = spec->resolution;
 
 	ti_dac->vref = devm_regulator_get(dev, "vref");
-	if (IS_ERR(ti_dac->vref)) {
-		dev_err(dev, "error to get regulator\n");
-		return PTR_ERR(ti_dac->vref);
-	}
+	if (IS_ERR(ti_dac->vref))
+		return dev_err_probe(dev, PTR_ERR(ti_dac->vref),
+				     "error to get regulator\n");
 
 	ret = regulator_enable(ti_dac->vref);
 	if (ret < 0) {
@@ -295,7 +292,7 @@ err:
 	return ret;
 }
 
-static int ti_dac_remove(struct spi_device *spi)
+static void ti_dac_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct ti_dac_chip *ti_dac = iio_priv(indio_dev);
@@ -303,7 +300,6 @@ static int ti_dac_remove(struct spi_device *spi)
 	iio_device_unregister(indio_dev);
 	mutex_destroy(&ti_dac->lock);
 	regulator_disable(ti_dac->vref);
-	return 0;
 }
 
 static const struct of_device_id ti_dac_of_id[] = {
diff --git a/drivers/iio/dac/ti-dac7612.c b/drivers/iio/dac/ti-dac7612.c
index c46805144dd4..8195815de26f 100644
--- a/drivers/iio/dac/ti-dac7612.c
+++ b/drivers/iio/dac/ti-dac7612.c
@@ -3,7 +3,7 @@
  * DAC7612 Dual, 12-Bit Serial input Digital-to-Analog Converter
  *
  * Copyright 2019 Qtechnology A/S
- * 2019 Ricardo Ribalda <ricardo@ribalda.com>
+ * 2019 Ricardo Ribalda <ribalda@kernel.org>
  *
  * Licensed under the GPL-2.
  */
@@ -23,10 +23,18 @@ struct dac7612 {
 	uint16_t cache[2];
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * Lock to protect the state of the device from potential concurrent
+	 * write accesses from userspace. The write operation requires an
+	 * SPI write, then toggling of a GPIO, so the lock aims to protect
+	 * the sanity of the entire sequence of operation.
+	 */
+	struct mutex lock;
+
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	uint8_t data[2] ____cacheline_aligned;
+	uint8_t data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int dac7612_cmd_single(struct dac7612 *priv, int channel, u16 val)
@@ -101,9 +109,9 @@ static int dac7612_write_raw(struct iio_dev *iio_dev,
 	if (val == priv->cache[chan->channel])
 		return 0;
 
-	mutex_lock(&iio_dev->mlock);
+	mutex_lock(&priv->lock);
 	ret = dac7612_cmd_single(priv, chan->channel, val);
-	mutex_unlock(&iio_dev->mlock);
+	mutex_unlock(&priv->lock);
 
 	return ret;
 }
@@ -139,13 +147,14 @@ static int dac7612_probe(struct spi_device *spi)
 		return PTR_ERR(priv->loaddacs);
 	priv->spi = spi;
 	spi_set_drvdata(spi, iio_dev);
-	iio_dev->dev.parent = &spi->dev;
 	iio_dev->info = &dac7612_info;
 	iio_dev->modes = INDIO_DIRECT_MODE;
 	iio_dev->channels = dac7612_channels;
 	iio_dev->num_channels = ARRAY_SIZE(priv->cache);
 	iio_dev->name = spi_get_device_id(spi)->name;
 
+	mutex_init(&priv->lock);
+
 	for (i = 0; i < ARRAY_SIZE(priv->cache); i++) {
 		ret = dac7612_cmd_single(priv, i, 0);
 		if (ret)
@@ -179,6 +188,6 @@ static struct spi_driver dac7612_driver = {
 };
 module_spi_driver(dac7612_driver);
 
-MODULE_AUTHOR("Ricardo Ribalda <ricardo@ribalda.com>");
+MODULE_AUTHOR("Ricardo Ribalda <ribalda@kernel.org>");
 MODULE_DESCRIPTION("Texas Instruments DAC7612 DAC driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/dac/vf610_dac.c b/drivers/iio/dac/vf610_dac.c
index 71f8a5c471c4..fc182250c622 100644
--- a/drivers/iio/dac/vf610_dac.c
+++ b/drivers/iio/dac/vf610_dac.c
@@ -10,6 +10,7 @@
 #include <linux/interrupt.h>
 #include <linux/io.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
@@ -36,6 +37,7 @@ struct vf610_dac {
 	struct device *dev;
 	enum vf610_conversion_mode_sel conv_mode;
 	void __iomem *regs;
+	struct mutex lock;
 };
 
 static void vf610_dac_init(struct vf610_dac *info)
@@ -64,7 +66,7 @@ static int vf610_set_conversion_mode(struct iio_dev *indio_dev,
 	struct vf610_dac *info = iio_priv(indio_dev);
 	int val;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&info->lock);
 	info->conv_mode = mode;
 	val = readl(info->regs + VF610_DACx_STATCTRL);
 	if (mode)
@@ -72,7 +74,7 @@ static int vf610_set_conversion_mode(struct iio_dev *indio_dev,
 	else
 		val &= ~VF610_DAC_LPEN;
 	writel(val, info->regs + VF610_DACx_STATCTRL);
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&info->lock);
 
 	return 0;
 }
@@ -147,9 +149,9 @@ static int vf610_write_raw(struct iio_dev *indio_dev,
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		mutex_lock(&indio_dev->mlock);
+		mutex_lock(&info->lock);
 		writel(VF610_DAC_DAT0(val), info->regs);
-		mutex_unlock(&indio_dev->mlock);
+		mutex_unlock(&info->lock);
 		return 0;
 
 	default:
@@ -198,13 +200,13 @@ static int vf610_dac_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = &pdev->dev;
-	indio_dev->dev.of_node = pdev->dev.of_node;
 	indio_dev->info = &vf610_dac_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = vf610_dac_iio_channels;
 	indio_dev->num_channels = ARRAY_SIZE(vf610_dac_iio_channels);
 
+	mutex_init(&info->lock);
+
 	ret = clk_prepare_enable(info->clk);
 	if (ret) {
 		dev_err(&pdev->dev,
@@ -223,6 +225,7 @@ static int vf610_dac_probe(struct platform_device *pdev)
 	return 0;
 
 error_iio_device_register:
+	vf610_dac_exit(info);
 	clk_disable_unprepare(info->clk);
 
 	return ret;
@@ -240,7 +243,6 @@ static int vf610_dac_remove(struct platform_device *pdev)
 	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int vf610_dac_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -266,9 +268,9 @@ static int vf610_dac_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(vf610_dac_pm_ops, vf610_dac_suspend, vf610_dac_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(vf610_dac_pm_ops, vf610_dac_suspend,
+				vf610_dac_resume);
 
 static struct platform_driver vf610_dac_driver = {
 	.probe          = vf610_dac_probe,
@@ -276,7 +278,7 @@ static struct platform_driver vf610_dac_driver = {
 	.driver         = {
 		.name   = "vf610-dac",
 		.of_match_table = vf610_dac_match,
-		.pm     = &vf610_dac_pm_ops,
+		.pm     = pm_sleep_ptr(&vf610_dac_pm_ops),
 	},
 };
 module_platform_driver(vf610_dac_driver);
diff --git a/drivers/iio/dummy/Kconfig b/drivers/iio/dummy/Kconfig
index 5c5c2f8c55f3..1f46cb9e51b7 100644
--- a/drivers/iio/dummy/Kconfig
+++ b/drivers/iio/dummy/Kconfig
@@ -34,6 +34,7 @@ config IIO_SIMPLE_DUMMY_BUFFER
 	select IIO_BUFFER
 	select IIO_TRIGGER
 	select IIO_KFIFO_BUF
+	select IIO_TRIGGERED_BUFFER
 	help
 	  Add buffered data capture to the simple dummy driver.
 
diff --git a/drivers/iio/dummy/iio_dummy_evgen.c b/drivers/iio/dummy/iio_dummy_evgen.c
index a6edf30567aa..5a0072727ba4 100644
--- a/drivers/iio/dummy/iio_dummy_evgen.c
+++ b/drivers/iio/dummy/iio_dummy_evgen.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (c) 2011 Jonathan Cameron
  *
  * Companion module to the iio simple dummy example driver.
@@ -27,18 +27,19 @@
 #define IIO_EVENTGEN_NO 10
 
 /**
+ * struct iio_dummy_eventgen - event generator specific state
  * @regs: irq regs we are faking
  * @lock: protect the evgen state
  * @inuse: mask of which irqs are connected
  * @irq_sim: interrupt simulator
  * @base: base of irq range
+ * @irq_sim_domain: irq simulator domain
  */
 struct iio_dummy_eventgen {
 	struct iio_dummy_regs regs[IIO_EVENTGEN_NO];
 	struct mutex lock;
 	bool inuse[IIO_EVENTGEN_NO];
-	struct irq_sim irq_sim;
-	int base;
+	struct irq_domain *irq_sim_domain;
 };
 
 /* We can only ever have one instance of this 'device' */
@@ -52,13 +53,14 @@ static int iio_dummy_evgen_create(void)
 	if (!iio_evgen)
 		return -ENOMEM;
 
-	ret = irq_sim_init(&iio_evgen->irq_sim, IIO_EVENTGEN_NO);
-	if (ret < 0) {
+	iio_evgen->irq_sim_domain = irq_domain_create_sim(NULL,
+							  IIO_EVENTGEN_NO);
+	if (IS_ERR(iio_evgen->irq_sim_domain)) {
+		ret = PTR_ERR(iio_evgen->irq_sim_domain);
 		kfree(iio_evgen);
 		return ret;
 	}
 
-	iio_evgen->base = irq_sim_irqnum(&iio_evgen->irq_sim, 0);
 	mutex_init(&iio_evgen->lock);
 
 	return 0;
@@ -80,7 +82,7 @@ int iio_dummy_evgen_get_irq(void)
 	mutex_lock(&iio_evgen->lock);
 	for (i = 0; i < IIO_EVENTGEN_NO; i++) {
 		if (!iio_evgen->inuse[i]) {
-			ret = irq_sim_irqnum(&iio_evgen->irq_sim, i);
+			ret = irq_create_mapping(iio_evgen->irq_sim_domain, i);
 			iio_evgen->inuse[i] = true;
 			break;
 		}
@@ -101,21 +103,27 @@ EXPORT_SYMBOL_GPL(iio_dummy_evgen_get_irq);
  */
 void iio_dummy_evgen_release_irq(int irq)
 {
+	struct irq_data *irqd = irq_get_irq_data(irq);
+
 	mutex_lock(&iio_evgen->lock);
-	iio_evgen->inuse[irq - iio_evgen->base] = false;
+	iio_evgen->inuse[irqd_to_hwirq(irqd)] = false;
+	irq_dispose_mapping(irq);
 	mutex_unlock(&iio_evgen->lock);
 }
 EXPORT_SYMBOL_GPL(iio_dummy_evgen_release_irq);
 
 struct iio_dummy_regs *iio_dummy_evgen_get_regs(int irq)
 {
-	return &iio_evgen->regs[irq - iio_evgen->base];
+	struct irq_data *irqd = irq_get_irq_data(irq);
+
+	return &iio_evgen->regs[irqd_to_hwirq(irqd)];
+
 }
 EXPORT_SYMBOL_GPL(iio_dummy_evgen_get_regs);
 
 static void iio_dummy_evgen_free(void)
 {
-	irq_sim_fini(&iio_evgen->irq_sim);
+	irq_domain_remove_sim(iio_evgen->irq_sim_domain);
 	kfree(iio_evgen);
 }
 
@@ -131,7 +139,7 @@ static ssize_t iio_evgen_poke(struct device *dev,
 {
 	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
 	unsigned long event;
-	int ret;
+	int ret, irq;
 
 	ret = kstrtoul(buf, 10, &event);
 	if (ret)
@@ -140,7 +148,10 @@ static ssize_t iio_evgen_poke(struct device *dev,
 	iio_evgen->regs[this_attr->address].reg_id   = this_attr->address;
 	iio_evgen->regs[this_attr->address].reg_data = event;
 
-	irq_sim_fire(&iio_evgen->irq_sim, this_attr->address);
+	irq = irq_find_mapping(iio_evgen->irq_sim_domain, this_attr->address);
+	ret = irq_set_irqchip_state(irq, IRQCHIP_STATE_PENDING, true);
+	if (ret)
+		return ret;
 
 	return len;
 }
diff --git a/drivers/iio/dummy/iio_simple_dummy.c b/drivers/iio/dummy/iio_simple_dummy.c
index 6cb02299a215..c24f609c2ade 100644
--- a/drivers/iio/dummy/iio_simple_dummy.c
+++ b/drivers/iio/dummy/iio_simple_dummy.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (c) 2011 Jonathan Cameron
  *
  * A reference industrial I/O driver to illustrate the functionality available.
@@ -553,7 +553,7 @@ static int iio_dummy_init_device(struct iio_dev *indio_dev)
 
 /**
  * iio_dummy_probe() - device instance probe
- * @index: an id number for this instance.
+ * @name: name of this instance.
  *
  * Arguments are bus type specific.
  * I2C: iio_dummy_probe(struct i2c_client *client,
@@ -566,12 +566,18 @@ static struct iio_sw_device *iio_dummy_probe(const char *name)
 	struct iio_dev *indio_dev;
 	struct iio_dummy_state *st;
 	struct iio_sw_device *swd;
+	struct device *parent = NULL;
+
+	/*
+	 * With hardware: Set the parent device.
+	 * parent = &spi->dev;
+	 * parent = &client->dev;
+	 */
 
 	swd = kzalloc(sizeof(*swd), GFP_KERNEL);
-	if (!swd) {
-		ret = -ENOMEM;
-		goto error_kzalloc;
-	}
+	if (!swd)
+		return ERR_PTR(-ENOMEM);
+
 	/*
 	 * Allocate an IIO device.
 	 *
@@ -580,21 +586,16 @@ static struct iio_sw_device *iio_dummy_probe(const char *name)
 	 * It also has a region (accessed by iio_priv()
 	 * for chip specific state information.
 	 */
-	indio_dev = iio_device_alloc(sizeof(*st));
+	indio_dev = iio_device_alloc(parent, sizeof(*st));
 	if (!indio_dev) {
 		ret = -ENOMEM;
-		goto error_ret;
+		goto error_free_swd;
 	}
 
 	st = iio_priv(indio_dev);
 	mutex_init(&st->lock);
 
 	iio_dummy_init_device(indio_dev);
-	/*
-	 * With hardware: Set the parent device.
-	 * indio_dev->dev.parent = &spi->dev;
-	 * indio_dev->dev.parent = &client->dev;
-	 */
 
 	 /*
 	 * Make the iio_dev struct available to remove function.
@@ -614,6 +615,10 @@ static struct iio_sw_device *iio_dummy_probe(const char *name)
 	 *    indio_dev->name = spi_get_device_id(spi)->name;
 	 */
 	indio_dev->name = kstrdup(name, GFP_KERNEL);
+	if (!indio_dev->name) {
+		ret = -ENOMEM;
+		goto error_free_device;
+	}
 
 	/* Provide description of available channels */
 	indio_dev->channels = iio_dummy_channels;
@@ -630,7 +635,7 @@ static struct iio_sw_device *iio_dummy_probe(const char *name)
 
 	ret = iio_simple_dummy_events_register(indio_dev);
 	if (ret < 0)
-		goto error_free_device;
+		goto error_free_name;
 
 	ret = iio_simple_dummy_configure_buffer(indio_dev);
 	if (ret < 0)
@@ -647,11 +652,12 @@ error_unconfigure_buffer:
 	iio_simple_dummy_unconfigure_buffer(indio_dev);
 error_unregister_events:
 	iio_simple_dummy_events_unregister(indio_dev);
+error_free_name:
+	kfree(indio_dev->name);
 error_free_device:
 	iio_device_free(indio_dev);
-error_ret:
+error_free_swd:
 	kfree(swd);
-error_kzalloc:
 	return ERR_PTR(ret);
 }
 
@@ -687,7 +693,8 @@ static int iio_dummy_remove(struct iio_sw_device *swd)
 
 	return 0;
 }
-/**
+
+/*
  * module_iio_sw_device_driver() -  device driver registration
  *
  * Varies depending on bus type of the device. As there is no device
diff --git a/drivers/iio/dummy/iio_simple_dummy_buffer.c b/drivers/iio/dummy/iio_simple_dummy_buffer.c
index 17606eca42b4..9b2f99449a82 100644
--- a/drivers/iio/dummy/iio_simple_dummy_buffer.c
+++ b/drivers/iio/dummy/iio_simple_dummy_buffer.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (c) 2011 Jonathan Cameron
  *
  * Buffer handling elements of industrial I/O reference driver.
@@ -16,9 +16,9 @@
 #include <linux/bitmap.h>
 
 #include <linux/iio/iio.h>
-#include <linux/iio/trigger_consumer.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 
 #include "iio_simple_dummy.h"
 
@@ -45,43 +45,31 @@ static irqreturn_t iio_simple_dummy_trigger_h(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
-	int len = 0;
+	int i = 0, j;
 	u16 *data;
 
 	data = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
 	if (!data)
 		goto done;
 
-	if (!bitmap_empty(indio_dev->active_scan_mask, indio_dev->masklength)) {
-		/*
-		 * Three common options here:
-		 * hardware scans: certain combinations of channels make
-		 *   up a fast read.  The capture will consist of all of them.
-		 *   Hence we just call the grab data function and fill the
-		 *   buffer without processing.
-		 * software scans: can be considered to be random access
-		 *   so efficient reading is just a case of minimal bus
-		 *   transactions.
-		 * software culled hardware scans:
-		 *   occasionally a driver may process the nearest hardware
-		 *   scan to avoid storing elements that are not desired. This
-		 *   is the fiddliest option by far.
-		 * Here let's pretend we have random access. And the values are
-		 * in the constant table fakedata.
-		 */
-		int i, j;
-
-		for (i = 0, j = 0;
-		     i < bitmap_weight(indio_dev->active_scan_mask,
-				       indio_dev->masklength);
-		     i++, j++) {
-			j = find_next_bit(indio_dev->active_scan_mask,
-					  indio_dev->masklength, j);
-			/* random access read from the 'device' */
-			data[i] = fakedata[j];
-			len += 2;
-		}
-	}
+	/*
+	 * Three common options here:
+	 * hardware scans:
+	 *   certain combinations of channels make up a fast read. The capture
+	 *   will consist of all of them. Hence we just call the grab data
+	 *   function and fill the buffer without processing.
+	 * software scans:
+	 *   can be considered to be random access so efficient reading is just
+	 *   a case of minimal bus transactions.
+	 * software culled hardware scans:
+	 *   occasionally a driver may process the nearest hardware scan to avoid
+	 *   storing elements that are not desired. This is the fiddliest option
+	 *   by far.
+	 * Here let's pretend we have random access. And the values are in the
+	 * constant table fakedata.
+	 */
+	for_each_set_bit(j, indio_dev->active_scan_mask, indio_dev->masklength)
+		data[i++] = fakedata[j];
 
 	iio_push_to_buffers_with_timestamp(indio_dev, data,
 					   iio_get_time_ns(indio_dev));
@@ -99,90 +87,20 @@ done:
 }
 
 static const struct iio_buffer_setup_ops iio_simple_dummy_buffer_setup_ops = {
-	/*
-	 * iio_triggered_buffer_postenable:
-	 * Generic function that simply attaches the pollfunc to the trigger.
-	 * Replace this to mess with hardware state before we attach the
-	 * trigger.
-	 */
-	.postenable = &iio_triggered_buffer_postenable,
-	/*
-	 * iio_triggered_buffer_predisable:
-	 * Generic function that simple detaches the pollfunc from the trigger.
-	 * Replace this to put hardware state back again after the trigger is
-	 * detached but before userspace knows we have disabled the ring.
-	 */
-	.predisable = &iio_triggered_buffer_predisable,
 };
 
 int iio_simple_dummy_configure_buffer(struct iio_dev *indio_dev)
 {
-	int ret;
-	struct iio_buffer *buffer;
-
-	/* Allocate a buffer to use - here a kfifo */
-	buffer = iio_kfifo_allocate();
-	if (!buffer) {
-		ret = -ENOMEM;
-		goto error_ret;
-	}
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
-	/*
-	 * Tell the core what device type specific functions should
-	 * be run on either side of buffer capture enable / disable.
-	 */
-	indio_dev->setup_ops = &iio_simple_dummy_buffer_setup_ops;
-
-	/*
-	 * Configure a polling function.
-	 * When a trigger event with this polling function connected
-	 * occurs, this function is run. Typically this grabs data
-	 * from the device.
-	 *
-	 * NULL for the bottom half. This is normally implemented only if we
-	 * either want to ping a capture now pin (no sleeping) or grab
-	 * a timestamp as close as possible to a data ready trigger firing.
-	 *
-	 * IRQF_ONESHOT ensures irqs are masked such that only one instance
-	 * of the handler can run at a time.
-	 *
-	 * "iio_simple_dummy_consumer%d" formatting string for the irq 'name'
-	 * as seen under /proc/interrupts. Remaining parameters as per printk.
-	 */
-	indio_dev->pollfunc = iio_alloc_pollfunc(NULL,
-						 &iio_simple_dummy_trigger_h,
-						 IRQF_ONESHOT,
-						 indio_dev,
-						 "iio_simple_dummy_consumer%d",
-						 indio_dev->id);
-
-	if (!indio_dev->pollfunc) {
-		ret = -ENOMEM;
-		goto error_free_buffer;
-	}
-
-	/*
-	 * Notify the core that this device is capable of buffered capture
-	 * driven by a trigger.
-	 */
-	indio_dev->modes |= INDIO_BUFFER_TRIGGERED;
-
-	return 0;
-
-error_free_buffer:
-	iio_kfifo_free(indio_dev->buffer);
-error_ret:
-	return ret;
+	return iio_triggered_buffer_setup(indio_dev, NULL,
+					  iio_simple_dummy_trigger_h,
+					  &iio_simple_dummy_buffer_setup_ops);
 }
 
 /**
  * iio_simple_dummy_unconfigure_buffer() - release buffer resources
- * @indo_dev: device instance state
+ * @indio_dev: device instance state
  */
 void iio_simple_dummy_unconfigure_buffer(struct iio_dev *indio_dev)
 {
-	iio_dealloc_pollfunc(indio_dev->pollfunc);
-	iio_kfifo_free(indio_dev->buffer);
+	iio_triggered_buffer_cleanup(indio_dev);
 }
diff --git a/drivers/iio/dummy/iio_simple_dummy_events.c b/drivers/iio/dummy/iio_simple_dummy_events.c
index b3abaaca6f5e..63a2b844be50 100644
--- a/drivers/iio/dummy/iio_simple_dummy_events.c
+++ b/drivers/iio/dummy/iio_simple_dummy_events.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Copyright (c) 2011 Jonathan Cameron
  *
  * Event handling elements of industrial I/O reference driver.
@@ -107,6 +107,7 @@ int iio_simple_dummy_write_event_config(struct iio_dev *indio_dev,
  * @dir: direction of the vent whose value is being read
  * @info: info type of the event whose value is being read
  * @val: value for the event code.
+ * @val2: unused
  *
  * Many devices provide a large set of events of which only a subset may
  * be enabled at a time, with value registers whose meaning changes depending
@@ -136,6 +137,7 @@ int iio_simple_dummy_read_event_value(struct iio_dev *indio_dev,
  * @dir: direction of the vent whose value is being set
  * @info: info type of the event whose value is being set
  * @val: the value to be set.
+ * @val2: unused
  */
 int iio_simple_dummy_write_event_value(struct iio_dev *indio_dev,
 				       const struct iio_chan_spec *chan,
diff --git a/drivers/iio/filter/Kconfig b/drivers/iio/filter/Kconfig
new file mode 100644
index 000000000000..a85b345ea14e
--- /dev/null
+++ b/drivers/iio/filter/Kconfig
@@ -0,0 +1,19 @@
+#
+# Filter drivers
+#
+# When adding new entries keep the list in alphabetical order
+
+menu "Filters"
+
+config ADMV8818
+	tristate "Analog Devices ADMV8818 High-Pass and Low-Pass Filter"
+	depends on SPI && COMMON_CLK && 64BIT
+	select REGMAP_SPI
+	help
+	  Say yes here to build support for Analog Devices ADMV8818
+	  2 GHz to 18 GHz, Digitally Tunable, High-Pass and Low-Pass Filter.
+
+	  To compile this driver as a module, choose M here: the
+	  modiule will be called admv8818.
+
+endmenu
diff --git a/drivers/iio/filter/Makefile b/drivers/iio/filter/Makefile
new file mode 100644
index 000000000000..55e228c0dd20
--- /dev/null
+++ b/drivers/iio/filter/Makefile
@@ -0,0 +1,7 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for industrial I/O Filter drivers
+#
+
+# When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_ADMV8818) += admv8818.o
diff --git a/drivers/iio/filter/admv8818.c b/drivers/iio/filter/admv8818.c
new file mode 100644
index 000000000000..68de45fe21b4
--- /dev/null
+++ b/drivers/iio/filter/admv8818.c
@@ -0,0 +1,665 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADMV8818 driver
+ *
+ * Copyright 2021 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+/* ADMV8818 Register Map */
+#define ADMV8818_REG_SPI_CONFIG_A		0x0
+#define ADMV8818_REG_SPI_CONFIG_B		0x1
+#define ADMV8818_REG_CHIPTYPE			0x3
+#define ADMV8818_REG_PRODUCT_ID_L		0x4
+#define ADMV8818_REG_PRODUCT_ID_H		0x5
+#define ADMV8818_REG_FAST_LATCH_POINTER		0x10
+#define ADMV8818_REG_FAST_LATCH_STOP		0x11
+#define ADMV8818_REG_FAST_LATCH_START		0x12
+#define ADMV8818_REG_FAST_LATCH_DIRECTION	0x13
+#define ADMV8818_REG_FAST_LATCH_STATE		0x14
+#define ADMV8818_REG_WR0_SW			0x20
+#define ADMV8818_REG_WR0_FILTER			0x21
+#define ADMV8818_REG_WR1_SW			0x22
+#define ADMV8818_REG_WR1_FILTER			0x23
+#define ADMV8818_REG_WR2_SW			0x24
+#define ADMV8818_REG_WR2_FILTER			0x25
+#define ADMV8818_REG_WR3_SW			0x26
+#define ADMV8818_REG_WR3_FILTER			0x27
+#define ADMV8818_REG_WR4_SW			0x28
+#define ADMV8818_REG_WR4_FILTER			0x29
+#define ADMV8818_REG_LUT0_SW			0x100
+#define ADMV8818_REG_LUT0_FILTER		0x101
+#define ADMV8818_REG_LUT127_SW			0x1FE
+#define ADMV8818_REG_LUT127_FILTER		0x1FF
+
+/* ADMV8818_REG_SPI_CONFIG_A Map */
+#define ADMV8818_SOFTRESET_N_MSK		BIT(7)
+#define ADMV8818_LSB_FIRST_N_MSK		BIT(6)
+#define ADMV8818_ENDIAN_N_MSK			BIT(5)
+#define ADMV8818_SDOACTIVE_N_MSK		BIT(4)
+#define ADMV8818_SDOACTIVE_MSK			BIT(3)
+#define ADMV8818_ENDIAN_MSK			BIT(2)
+#define ADMV8818_LSBFIRST_MSK			BIT(1)
+#define ADMV8818_SOFTRESET_MSK			BIT(0)
+
+/* ADMV8818_REG_SPI_CONFIG_B Map */
+#define ADMV8818_SINGLE_INSTRUCTION_MSK		BIT(7)
+#define ADMV8818_CSB_STALL_MSK			BIT(6)
+#define ADMV8818_MASTER_SLAVE_RB_MSK		BIT(5)
+#define ADMV8818_MASTER_SLAVE_TRANSFER_MSK	BIT(0)
+
+/* ADMV8818_REG_WR0_SW Map */
+#define ADMV8818_SW_IN_SET_WR0_MSK		BIT(7)
+#define ADMV8818_SW_OUT_SET_WR0_MSK		BIT(6)
+#define ADMV8818_SW_IN_WR0_MSK			GENMASK(5, 3)
+#define ADMV8818_SW_OUT_WR0_MSK			GENMASK(2, 0)
+
+/* ADMV8818_REG_WR0_FILTER Map */
+#define ADMV8818_HPF_WR0_MSK			GENMASK(7, 4)
+#define ADMV8818_LPF_WR0_MSK			GENMASK(3, 0)
+
+enum {
+	ADMV8818_BW_FREQ,
+	ADMV8818_CENTER_FREQ
+};
+
+enum {
+	ADMV8818_AUTO_MODE,
+	ADMV8818_MANUAL_MODE,
+};
+
+struct admv8818_state {
+	struct spi_device	*spi;
+	struct regmap		*regmap;
+	struct clk		*clkin;
+	struct notifier_block	nb;
+	/* Protect against concurrent accesses to the device and data content*/
+	struct mutex		lock;
+	unsigned int		filter_mode;
+	u64			cf_hz;
+};
+
+static const unsigned long long freq_range_hpf[4][2] = {
+	{1750000000ULL, 3550000000ULL},
+	{3400000000ULL, 7250000000ULL},
+	{6600000000, 12000000000},
+	{12500000000, 19900000000}
+};
+
+static const unsigned long long freq_range_lpf[4][2] = {
+	{2050000000ULL, 3850000000ULL},
+	{3350000000ULL, 7250000000ULL},
+	{7000000000, 13000000000},
+	{12550000000, 18500000000}
+};
+
+static const struct regmap_config admv8818_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.read_flag_mask = 0x80,
+	.max_register = 0x1FF,
+};
+
+static const char * const admv8818_modes[] = {
+	[0] = "auto",
+	[1] = "manual"
+};
+
+static int __admv8818_hpf_select(struct admv8818_state *st, u64 freq)
+{
+	unsigned int hpf_step = 0, hpf_band = 0, i, j;
+	u64 freq_step;
+	int ret;
+
+	if (freq < freq_range_hpf[0][0])
+		goto hpf_write;
+
+	if (freq > freq_range_hpf[3][1]) {
+		hpf_step = 15;
+		hpf_band = 4;
+
+		goto hpf_write;
+	}
+
+	for (i = 0; i < 4; i++) {
+		freq_step = div_u64((freq_range_hpf[i][1] -
+			freq_range_hpf[i][0]), 15);
+
+		if (freq > freq_range_hpf[i][0] &&
+		    (freq < freq_range_hpf[i][1] + freq_step)) {
+			hpf_band = i + 1;
+
+			for (j = 1; j <= 16; j++) {
+				if (freq < (freq_range_hpf[i][0] + (freq_step * j))) {
+					hpf_step = j - 1;
+					break;
+				}
+			}
+			break;
+		}
+	}
+
+	/* Close HPF frequency gap between 12 and 12.5 GHz */
+	if (freq >= 12000 * HZ_PER_MHZ && freq <= 12500 * HZ_PER_MHZ) {
+		hpf_band = 3;
+		hpf_step = 15;
+	}
+
+hpf_write:
+	ret = regmap_update_bits(st->regmap, ADMV8818_REG_WR0_SW,
+				 ADMV8818_SW_IN_SET_WR0_MSK |
+				 ADMV8818_SW_IN_WR0_MSK,
+				 FIELD_PREP(ADMV8818_SW_IN_SET_WR0_MSK, 1) |
+				 FIELD_PREP(ADMV8818_SW_IN_WR0_MSK, hpf_band));
+	if (ret)
+		return ret;
+
+	return regmap_update_bits(st->regmap, ADMV8818_REG_WR0_FILTER,
+				  ADMV8818_HPF_WR0_MSK,
+				  FIELD_PREP(ADMV8818_HPF_WR0_MSK, hpf_step));
+}
+
+static int admv8818_hpf_select(struct admv8818_state *st, u64 freq)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv8818_hpf_select(st, freq);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __admv8818_lpf_select(struct admv8818_state *st, u64 freq)
+{
+	unsigned int lpf_step = 0, lpf_band = 0, i, j;
+	u64 freq_step;
+	int ret;
+
+	if (freq > freq_range_lpf[3][1])
+		goto lpf_write;
+
+	if (freq < freq_range_lpf[0][0]) {
+		lpf_band = 1;
+
+		goto lpf_write;
+	}
+
+	for (i = 0; i < 4; i++) {
+		if (freq > freq_range_lpf[i][0] && freq < freq_range_lpf[i][1]) {
+			lpf_band = i + 1;
+			freq_step = div_u64((freq_range_lpf[i][1] - freq_range_lpf[i][0]), 15);
+
+			for (j = 0; j <= 15; j++) {
+				if (freq < (freq_range_lpf[i][0] + (freq_step * j))) {
+					lpf_step = j;
+					break;
+				}
+			}
+			break;
+		}
+	}
+
+lpf_write:
+	ret = regmap_update_bits(st->regmap, ADMV8818_REG_WR0_SW,
+				 ADMV8818_SW_OUT_SET_WR0_MSK |
+				 ADMV8818_SW_OUT_WR0_MSK,
+				 FIELD_PREP(ADMV8818_SW_OUT_SET_WR0_MSK, 1) |
+				 FIELD_PREP(ADMV8818_SW_OUT_WR0_MSK, lpf_band));
+	if (ret)
+		return ret;
+
+	return regmap_update_bits(st->regmap, ADMV8818_REG_WR0_FILTER,
+				  ADMV8818_LPF_WR0_MSK,
+				  FIELD_PREP(ADMV8818_LPF_WR0_MSK, lpf_step));
+}
+
+static int admv8818_lpf_select(struct admv8818_state *st, u64 freq)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv8818_lpf_select(st, freq);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int admv8818_rfin_band_select(struct admv8818_state *st)
+{
+	int ret;
+
+	st->cf_hz = clk_get_rate(st->clkin);
+
+	mutex_lock(&st->lock);
+
+	ret = __admv8818_hpf_select(st, st->cf_hz);
+	if (ret)
+		goto exit;
+
+	ret = __admv8818_lpf_select(st, st->cf_hz);
+exit:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int __admv8818_read_hpf_freq(struct admv8818_state *st, u64 *hpf_freq)
+{
+	unsigned int data, hpf_band, hpf_state;
+	int ret;
+
+	ret = regmap_read(st->regmap, ADMV8818_REG_WR0_SW, &data);
+	if (ret)
+		return ret;
+
+	hpf_band = FIELD_GET(ADMV8818_SW_IN_WR0_MSK, data);
+	if (!hpf_band) {
+		*hpf_freq = 0;
+		return ret;
+	}
+
+	ret = regmap_read(st->regmap, ADMV8818_REG_WR0_FILTER, &data);
+	if (ret)
+		return ret;
+
+	hpf_state = FIELD_GET(ADMV8818_HPF_WR0_MSK, data);
+
+	*hpf_freq = div_u64(freq_range_hpf[hpf_band - 1][1] - freq_range_hpf[hpf_band - 1][0], 15);
+	*hpf_freq = freq_range_hpf[hpf_band - 1][0] + (*hpf_freq * hpf_state);
+
+	return ret;
+}
+
+static int admv8818_read_hpf_freq(struct admv8818_state *st, u64 *hpf_freq)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv8818_read_hpf_freq(st, hpf_freq);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __admv8818_read_lpf_freq(struct admv8818_state *st, u64 *lpf_freq)
+{
+	unsigned int data, lpf_band, lpf_state;
+	int ret;
+
+	ret = regmap_read(st->regmap, ADMV8818_REG_WR0_SW, &data);
+	if (ret)
+		return ret;
+
+	lpf_band = FIELD_GET(ADMV8818_SW_OUT_WR0_MSK, data);
+	if (!lpf_band) {
+		*lpf_freq = 0;
+		return ret;
+	}
+
+	ret = regmap_read(st->regmap, ADMV8818_REG_WR0_FILTER, &data);
+	if (ret)
+		return ret;
+
+	lpf_state = FIELD_GET(ADMV8818_LPF_WR0_MSK, data);
+
+	*lpf_freq = div_u64(freq_range_lpf[lpf_band - 1][1] - freq_range_lpf[lpf_band - 1][0], 15);
+	*lpf_freq = freq_range_lpf[lpf_band - 1][0] + (*lpf_freq * lpf_state);
+
+	return ret;
+}
+
+static int admv8818_read_lpf_freq(struct admv8818_state *st, u64 *lpf_freq)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv8818_read_lpf_freq(st, lpf_freq);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int admv8818_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long info)
+{
+	struct admv8818_state *st = iio_priv(indio_dev);
+
+	u64 freq = ((u64)val2 << 32 | (u32)val);
+
+	switch (info) {
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return admv8818_lpf_select(st, freq);
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		return admv8818_hpf_select(st, freq);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int admv8818_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long info)
+{
+	struct admv8818_state *st = iio_priv(indio_dev);
+	int ret;
+	u64 freq;
+
+	switch (info) {
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		ret = admv8818_read_lpf_freq(st, &freq);
+		if (ret)
+			return ret;
+
+		*val = (u32)freq;
+		*val2 = (u32)(freq >> 32);
+
+		return IIO_VAL_INT_64;
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		ret = admv8818_read_hpf_freq(st, &freq);
+		if (ret)
+			return ret;
+
+		*val = (u32)freq;
+		*val2 = (u32)(freq >> 32);
+
+		return IIO_VAL_INT_64;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int admv8818_reg_access(struct iio_dev *indio_dev,
+			       unsigned int reg,
+			       unsigned int write_val,
+			       unsigned int *read_val)
+{
+	struct admv8818_state *st = iio_priv(indio_dev);
+
+	if (read_val)
+		return regmap_read(st->regmap, reg, read_val);
+	else
+		return regmap_write(st->regmap, reg, write_val);
+}
+
+static int admv8818_get_mode(struct iio_dev *indio_dev,
+			     const struct iio_chan_spec *chan)
+{
+	struct admv8818_state *st = iio_priv(indio_dev);
+
+	return st->filter_mode;
+}
+
+static int admv8818_set_mode(struct iio_dev *indio_dev,
+			     const struct iio_chan_spec *chan,
+			     unsigned int mode)
+{
+	struct admv8818_state *st = iio_priv(indio_dev);
+	int ret = 0;
+
+	if (!st->clkin) {
+		if (mode == ADMV8818_MANUAL_MODE)
+			return 0;
+
+		return -EINVAL;
+	}
+
+	switch (mode) {
+	case ADMV8818_AUTO_MODE:
+		if (!st->filter_mode)
+			return 0;
+
+		ret = clk_prepare_enable(st->clkin);
+		if (ret)
+			return ret;
+
+		ret = clk_notifier_register(st->clkin, &st->nb);
+		if (ret) {
+			clk_disable_unprepare(st->clkin);
+
+			return ret;
+		}
+
+		break;
+	case ADMV8818_MANUAL_MODE:
+		if (st->filter_mode)
+			return 0;
+
+		clk_disable_unprepare(st->clkin);
+
+		ret = clk_notifier_unregister(st->clkin, &st->nb);
+		if (ret)
+			return ret;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	st->filter_mode = mode;
+
+	return ret;
+}
+
+static const struct iio_info admv8818_info = {
+	.write_raw = admv8818_write_raw,
+	.read_raw = admv8818_read_raw,
+	.debugfs_reg_access = &admv8818_reg_access,
+};
+
+static const struct iio_enum admv8818_mode_enum = {
+	.items = admv8818_modes,
+	.num_items = ARRAY_SIZE(admv8818_modes),
+	.get = admv8818_get_mode,
+	.set = admv8818_set_mode,
+};
+
+static const struct iio_chan_spec_ext_info admv8818_ext_info[] = {
+	IIO_ENUM("filter_mode", IIO_SHARED_BY_ALL, &admv8818_mode_enum),
+	IIO_ENUM_AVAILABLE("filter_mode", IIO_SHARED_BY_ALL, &admv8818_mode_enum),
+	{ },
+};
+
+#define ADMV8818_CHAN(_channel) {				\
+	.type = IIO_ALTVOLTAGE,					\
+	.output = 1,						\
+	.indexed = 1,						\
+	.channel = _channel,					\
+	.info_mask_separate =					\
+		BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) | \
+		BIT(IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY) \
+}
+
+#define ADMV8818_CHAN_BW_CF(_channel, _admv8818_ext_info) {	\
+	.type = IIO_ALTVOLTAGE,					\
+	.output = 1,						\
+	.indexed = 1,						\
+	.channel = _channel,					\
+	.ext_info = _admv8818_ext_info,				\
+}
+
+static const struct iio_chan_spec admv8818_channels[] = {
+	ADMV8818_CHAN(0),
+	ADMV8818_CHAN_BW_CF(0, admv8818_ext_info),
+};
+
+static int admv8818_freq_change(struct notifier_block *nb, unsigned long action, void *data)
+{
+	struct admv8818_state *st = container_of(nb, struct admv8818_state, nb);
+
+	if (action == POST_RATE_CHANGE)
+		return notifier_from_errno(admv8818_rfin_band_select(st));
+
+	return NOTIFY_OK;
+}
+
+static void admv8818_clk_notifier_unreg(void *data)
+{
+	struct admv8818_state *st = data;
+
+	if (st->filter_mode == 0)
+		clk_notifier_unregister(st->clkin, &st->nb);
+}
+
+static void admv8818_clk_disable(void *data)
+{
+	struct admv8818_state *st = data;
+
+	if (st->filter_mode == 0)
+		clk_disable_unprepare(st->clkin);
+}
+
+static int admv8818_init(struct admv8818_state *st)
+{
+	int ret;
+	struct spi_device *spi = st->spi;
+	unsigned int chip_id;
+
+	ret = regmap_update_bits(st->regmap, ADMV8818_REG_SPI_CONFIG_A,
+				 ADMV8818_SOFTRESET_N_MSK |
+				 ADMV8818_SOFTRESET_MSK,
+				 FIELD_PREP(ADMV8818_SOFTRESET_N_MSK, 1) |
+				 FIELD_PREP(ADMV8818_SOFTRESET_MSK, 1));
+	if (ret) {
+		dev_err(&spi->dev, "ADMV8818 Soft Reset failed.\n");
+		return ret;
+	}
+
+	ret = regmap_update_bits(st->regmap, ADMV8818_REG_SPI_CONFIG_A,
+				 ADMV8818_SDOACTIVE_N_MSK |
+				 ADMV8818_SDOACTIVE_MSK,
+				 FIELD_PREP(ADMV8818_SDOACTIVE_N_MSK, 1) |
+				 FIELD_PREP(ADMV8818_SDOACTIVE_MSK, 1));
+	if (ret) {
+		dev_err(&spi->dev, "ADMV8818 SDO Enable failed.\n");
+		return ret;
+	}
+
+	ret = regmap_read(st->regmap, ADMV8818_REG_CHIPTYPE, &chip_id);
+	if (ret) {
+		dev_err(&spi->dev, "ADMV8818 Chip ID read failed.\n");
+		return ret;
+	}
+
+	if (chip_id != 0x1) {
+		dev_err(&spi->dev, "ADMV8818 Invalid Chip ID.\n");
+		return -EINVAL;
+	}
+
+	ret = regmap_update_bits(st->regmap, ADMV8818_REG_SPI_CONFIG_B,
+				 ADMV8818_SINGLE_INSTRUCTION_MSK,
+				 FIELD_PREP(ADMV8818_SINGLE_INSTRUCTION_MSK, 1));
+	if (ret) {
+		dev_err(&spi->dev, "ADMV8818 Single Instruction failed.\n");
+		return ret;
+	}
+
+	if (st->clkin)
+		return admv8818_rfin_band_select(st);
+	else
+		return 0;
+}
+
+static int admv8818_clk_setup(struct admv8818_state *st)
+{
+	struct spi_device *spi = st->spi;
+	int ret;
+
+	st->clkin = devm_clk_get_optional(&spi->dev, "rf_in");
+	if (IS_ERR(st->clkin))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
+				     "failed to get the input clock\n");
+	else if (!st->clkin)
+		return 0;
+
+	ret = clk_prepare_enable(st->clkin);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, admv8818_clk_disable, st);
+	if (ret)
+		return ret;
+
+	st->nb.notifier_call = admv8818_freq_change;
+	ret = clk_notifier_register(st->clkin, &st->nb);
+	if (ret < 0)
+		return ret;
+
+	return devm_add_action_or_reset(&spi->dev, admv8818_clk_notifier_unreg, st);
+}
+
+static int admv8818_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct regmap *regmap;
+	struct admv8818_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	regmap = devm_regmap_init_spi(spi, &admv8818_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	st = iio_priv(indio_dev);
+	st->regmap = regmap;
+
+	indio_dev->info = &admv8818_info;
+	indio_dev->name = "admv8818";
+	indio_dev->channels = admv8818_channels;
+	indio_dev->num_channels = ARRAY_SIZE(admv8818_channels);
+
+	st->spi = spi;
+
+	ret = admv8818_clk_setup(st);
+	if (ret)
+		return ret;
+
+	mutex_init(&st->lock);
+
+	ret = admv8818_init(st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id admv8818_id[] = {
+	{ "admv8818", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, admv8818_id);
+
+static const struct of_device_id admv8818_of_match[] = {
+	{ .compatible = "adi,admv8818" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, admv8818_of_match);
+
+static struct spi_driver admv8818_driver = {
+	.driver = {
+		.name = "admv8818",
+		.of_match_table = admv8818_of_match,
+	},
+	.probe = admv8818_probe,
+	.id_table = admv8818_id,
+};
+module_spi_driver(admv8818_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com");
+MODULE_DESCRIPTION("Analog Devices ADMV8818");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/frequency/Kconfig b/drivers/iio/frequency/Kconfig
index 240b81502512..f3702f36436c 100644
--- a/drivers/iio/frequency/Kconfig
+++ b/drivers/iio/frequency/Kconfig
@@ -49,5 +49,47 @@ config ADF4371
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called adf4371.
+
+config ADMV1013
+	tristate "Analog Devices ADMV1013 Microwave Upconverter"
+	depends on SPI && COMMON_CLK
+	help
+	  Say yes here to build support for Analog Devices ADMV1013
+	  24 GHz to 44 GHz, Wideband, Microwave Upconverter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called admv1013.
+
+config ADMV1014
+	tristate "Analog Devices ADMV1014 Microwave Downconverter"
+	depends on SPI && COMMON_CLK && 64BIT
+	help
+	  Say yes here to build support for Analog Devices ADMV1014
+	  24 GHz to 44 GHz, Wideband, Microwave Downconverter.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called admv1014.
+
+config ADMV4420
+       tristate "Analog Devices ADMV4420 K Band Downconverter"
+       depends on SPI
+       help
+         Say yes here to build support for Analog Devices K Band
+         Downconverter with integrated Fractional-N PLL and VCO.
+
+         To compile this driver as a module, choose M here: the
+         module will be called admv4420.
+
+config ADRF6780
+        tristate "Analog Devices ADRF6780 Microwave Upconverter"
+        depends on SPI
+        depends on COMMON_CLK
+        help
+          Say yes here to build support for Analog Devices ADRF6780
+          5.9 GHz to 23.6 GHz, Wideband, Microwave Upconverter.
+
+          To compile this driver as a module, choose M here: the
+          module will be called adrf6780.
+
 endmenu
 endmenu
diff --git a/drivers/iio/frequency/Makefile b/drivers/iio/frequency/Makefile
index 518b1e50caef..48add732f1d3 100644
--- a/drivers/iio/frequency/Makefile
+++ b/drivers/iio/frequency/Makefile
@@ -7,3 +7,7 @@
 obj-$(CONFIG_AD9523) += ad9523.o
 obj-$(CONFIG_ADF4350) += adf4350.o
 obj-$(CONFIG_ADF4371) += adf4371.o
+obj-$(CONFIG_ADMV1013) += admv1013.o
+obj-$(CONFIG_ADMV1014) += admv1014.o
+obj-$(CONFIG_ADMV4420) += admv4420.o
+obj-$(CONFIG_ADRF6780) += adrf6780.o
diff --git a/drivers/iio/frequency/ad9523.c b/drivers/iio/frequency/ad9523.c
index a7322184cbdd..97662ca1ca96 100644
--- a/drivers/iio/frequency/ad9523.c
+++ b/drivers/iio/frequency/ad9523.c
@@ -287,13 +287,13 @@ struct ad9523_state {
 	struct mutex		lock;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
-	 * transfer buffers to live in their own cache lines.
+	 * DMA (thus cache coherency maintenance) may require that
+	 * transfer buffers live in their own cache lines.
 	 */
 	union {
 		__be32 d32;
 		u8 d8[4];
-	} data[2] ____cacheline_aligned;
+	} data[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad9523_read(struct iio_dev *indio_dev, unsigned int addr)
@@ -516,7 +516,7 @@ static ssize_t ad9523_store(struct device *dev,
 	bool state;
 	int ret;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 
@@ -551,7 +551,7 @@ static ssize_t ad9523_show(struct device *dev,
 	mutex_lock(&st->lock);
 	ret = ad9523_read(indio_dev, AD9523_READBACK_0);
 	if (ret >= 0) {
-		ret = sprintf(buf, "%d\n", !!(ret & (1 <<
+		ret = sysfs_emit(buf, "%d\n", !!(ret & (1 <<
 			(u32)this_attr->address)));
 	}
 	mutex_unlock(&st->lock);
@@ -969,6 +969,13 @@ static int ad9523_setup(struct iio_dev *indio_dev)
 	return 0;
 }
 
+static void ad9523_reg_disable(void *data)
+{
+	struct regulator *reg = data;
+
+	regulator_disable(reg);
+}
+
 static int ad9523_probe(struct spi_device *spi)
 {
 	struct ad9523_platform_data *pdata = spi->dev.platform_data;
@@ -994,21 +1001,22 @@ static int ad9523_probe(struct spi_device *spi)
 		ret = regulator_enable(st->reg);
 		if (ret)
 			return ret;
+
+		ret = devm_add_action_or_reset(&spi->dev, ad9523_reg_disable,
+					       st->reg);
+		if (ret)
+			return ret;
 	}
 
 	st->pwrdown_gpio = devm_gpiod_get_optional(&spi->dev, "powerdown",
 		GPIOD_OUT_HIGH);
-	if (IS_ERR(st->pwrdown_gpio)) {
-		ret = PTR_ERR(st->pwrdown_gpio);
-		goto error_disable_reg;
-	}
+	if (IS_ERR(st->pwrdown_gpio))
+		return PTR_ERR(st->pwrdown_gpio);
 
 	st->reset_gpio = devm_gpiod_get_optional(&spi->dev, "reset",
 		GPIOD_OUT_LOW);
-	if (IS_ERR(st->reset_gpio)) {
-		ret = PTR_ERR(st->reset_gpio);
-		goto error_disable_reg;
-	}
+	if (IS_ERR(st->reset_gpio))
+		return PTR_ERR(st->reset_gpio);
 
 	if (st->reset_gpio) {
 		udelay(1);
@@ -1017,16 +1025,13 @@ static int ad9523_probe(struct spi_device *spi)
 
 	st->sync_gpio = devm_gpiod_get_optional(&spi->dev, "sync",
 		GPIOD_OUT_HIGH);
-	if (IS_ERR(st->sync_gpio)) {
-		ret = PTR_ERR(st->sync_gpio);
-		goto error_disable_reg;
-	}
+	if (IS_ERR(st->sync_gpio))
+		return PTR_ERR(st->sync_gpio);
 
 	spi_set_drvdata(spi, indio_dev);
 	st->spi = spi;
 	st->pdata = pdata;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = (pdata->name[0] != 0) ? pdata->name :
 			  spi_get_device_id(spi)->name;
 	indio_dev->info = &ad9523_info;
@@ -1036,34 +1041,9 @@ static int ad9523_probe(struct spi_device *spi)
 
 	ret = ad9523_setup(indio_dev);
 	if (ret < 0)
-		goto error_disable_reg;
-
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_disable_reg;
-
-	dev_info(&spi->dev, "probed %s\n", indio_dev->name);
-
-	return 0;
-
-error_disable_reg:
-	if (!IS_ERR(st->reg))
-		regulator_disable(st->reg);
-
-	return ret;
-}
-
-static int ad9523_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct ad9523_state *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	if (!IS_ERR(st->reg))
-		regulator_disable(st->reg);
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id ad9523_id[] = {
@@ -1077,7 +1057,6 @@ static struct spi_driver ad9523_driver = {
 		.name	= "ad9523",
 	},
 	.probe		= ad9523_probe,
-	.remove		= ad9523_remove,
 	.id_table	= ad9523_id,
 };
 module_spi_driver(ad9523_driver);
diff --git a/drivers/iio/frequency/adf4350.c b/drivers/iio/frequency/adf4350.c
index 1c2dc9b00f31..85e289700c3c 100644
--- a/drivers/iio/frequency/adf4350.c
+++ b/drivers/iio/frequency/adf4350.c
@@ -7,17 +7,18 @@
 
 #include <linux/device.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
-#include <linux/module.h>
 #include <linux/gcd.h>
 #include <linux/gpio/consumer.h>
 #include <asm/div64.h>
 #include <linux/clk.h>
-#include <linux/of.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -48,10 +49,17 @@ struct adf4350_state {
 	unsigned long			regs_hw[6];
 	unsigned long long		freq_req;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
-	 * transfer buffers to live in their own cache lines.
+	 * Lock to protect the state of the device from potential concurrent
+	 * writes. The device is configured via a sequence of SPI writes,
+	 * and this lock is meant to prevent the start of another sequence
+	 * before another one has finished.
+	 */
+	struct mutex			lock;
+	/*
+	 * DMA (thus cache coherency maintenance) may require that
+	 * transfer buffers live in their own cache lines.
 	 */
-	__be32				val ____cacheline_aligned;
+	__be32				val __aligned(IIO_DMA_MINALIGN);
 };
 
 static struct adf4350_platform_data default_pdata = {
@@ -99,7 +107,7 @@ static int adf4350_reg_access(struct iio_dev *indio_dev,
 	if (reg > ADF4350_REG5)
 		return -EINVAL;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	if (readval == NULL) {
 		st->regs[reg] = writeval & ~(BIT(0) | BIT(1) | BIT(2));
 		ret = adf4350_sync_config(st);
@@ -107,7 +115,7 @@ static int adf4350_reg_access(struct iio_dev *indio_dev,
 		*readval =  st->regs_hw[reg];
 		ret = 0;
 	}
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret;
 }
@@ -254,7 +262,7 @@ static ssize_t adf4350_write(struct iio_dev *indio_dev,
 	if (ret)
 		return ret;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	switch ((u32)private) {
 	case ADF4350_FREQ:
 		ret = adf4350_set_freq(st, readin);
@@ -295,7 +303,7 @@ static ssize_t adf4350_write(struct iio_dev *indio_dev,
 	default:
 		ret = -EINVAL;
 	}
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret ? ret : len;
 }
@@ -309,7 +317,7 @@ static ssize_t adf4350_read(struct iio_dev *indio_dev,
 	unsigned long long val;
 	int ret = 0;
 
-	mutex_lock(&indio_dev->mlock);
+	mutex_lock(&st->lock);
 	switch ((u32)private) {
 	case ADF4350_FREQ:
 		val = (u64)((st->r0_int * st->r1_mod) + st->r0_fract) *
@@ -338,7 +346,7 @@ static ssize_t adf4350_read(struct iio_dev *indio_dev,
 		ret = -EINVAL;
 		val = 0;
 	}
-	mutex_unlock(&indio_dev->mlock);
+	mutex_unlock(&st->lock);
 
 	return ret < 0 ? ret : sprintf(buf, "%llu\n", val);
 }
@@ -374,10 +382,8 @@ static const struct iio_info adf4350_info = {
 	.debugfs_reg_access = &adf4350_reg_access,
 };
 
-#ifdef CONFIG_OF
 static struct adf4350_platform_data *adf4350_parse_dt(struct device *dev)
 {
-	struct device_node *np = dev->of_node;
 	struct adf4350_platform_data *pdata;
 	unsigned int tmp;
 
@@ -385,101 +391,83 @@ static struct adf4350_platform_data *adf4350_parse_dt(struct device *dev)
 	if (!pdata)
 		return NULL;
 
-	snprintf(&pdata->name[0], SPI_NAME_SIZE - 1, "%pOFn", np);
+	snprintf(pdata->name, sizeof(pdata->name), "%pfw", dev_fwnode(dev));
 
 	tmp = 10000;
-	of_property_read_u32(np, "adi,channel-spacing", &tmp);
+	device_property_read_u32(dev, "adi,channel-spacing", &tmp);
 	pdata->channel_spacing = tmp;
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,power-up-frequency", &tmp);
+	device_property_read_u32(dev, "adi,power-up-frequency", &tmp);
 	pdata->power_up_frequency = tmp;
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,reference-div-factor", &tmp);
+	device_property_read_u32(dev, "adi,reference-div-factor", &tmp);
 	pdata->ref_div_factor = tmp;
 
-	pdata->ref_doubler_en = of_property_read_bool(np,
-			"adi,reference-doubler-enable");
-	pdata->ref_div2_en = of_property_read_bool(np,
-			"adi,reference-div2-enable");
+	pdata->ref_doubler_en = device_property_read_bool(dev, "adi,reference-doubler-enable");
+	pdata->ref_div2_en = device_property_read_bool(dev, "adi,reference-div2-enable");
 
 	/* r2_user_settings */
-	pdata->r2_user_settings = of_property_read_bool(np,
-			"adi,phase-detector-polarity-positive-enable") ?
-			ADF4350_REG2_PD_POLARITY_POS : 0;
-	pdata->r2_user_settings |= of_property_read_bool(np,
-			"adi,lock-detect-precision-6ns-enable") ?
-			ADF4350_REG2_LDP_6ns : 0;
-	pdata->r2_user_settings |= of_property_read_bool(np,
-			"adi,lock-detect-function-integer-n-enable") ?
-			ADF4350_REG2_LDF_INT_N : 0;
+	pdata->r2_user_settings = 0;
+	if (device_property_read_bool(dev, "adi,phase-detector-polarity-positive-enable"))
+		pdata->r2_user_settings |= ADF4350_REG2_PD_POLARITY_POS;
+	if (device_property_read_bool(dev, "adi,lock-detect-precision-6ns-enable"))
+		pdata->r2_user_settings |= ADF4350_REG2_LDP_6ns;
+	if (device_property_read_bool(dev, "adi,lock-detect-function-integer-n-enable"))
+		pdata->r2_user_settings |= ADF4350_REG2_LDF_INT_N;
 
 	tmp = 2500;
-	of_property_read_u32(np, "adi,charge-pump-current", &tmp);
+	device_property_read_u32(dev, "adi,charge-pump-current", &tmp);
 	pdata->r2_user_settings |= ADF4350_REG2_CHARGE_PUMP_CURR_uA(tmp);
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,muxout-select", &tmp);
+	device_property_read_u32(dev, "adi,muxout-select", &tmp);
 	pdata->r2_user_settings |= ADF4350_REG2_MUXOUT(tmp);
 
-	pdata->r2_user_settings |= of_property_read_bool(np,
-			"adi,low-spur-mode-enable") ?
-			ADF4350_REG2_NOISE_MODE(0x3) : 0;
+	if (device_property_read_bool(dev, "adi,low-spur-mode-enable"))
+		pdata->r2_user_settings |= ADF4350_REG2_NOISE_MODE(0x3);
 
 	/* r3_user_settings */
 
-	pdata->r3_user_settings = of_property_read_bool(np,
-			"adi,cycle-slip-reduction-enable") ?
-			ADF4350_REG3_12BIT_CSR_EN : 0;
-	pdata->r3_user_settings |= of_property_read_bool(np,
-			"adi,charge-cancellation-enable") ?
-			ADF4351_REG3_CHARGE_CANCELLATION_EN : 0;
-
-	pdata->r3_user_settings |= of_property_read_bool(np,
-			"adi,anti-backlash-3ns-enable") ?
-			ADF4351_REG3_ANTI_BACKLASH_3ns_EN : 0;
-	pdata->r3_user_settings |= of_property_read_bool(np,
-			"adi,band-select-clock-mode-high-enable") ?
-			ADF4351_REG3_BAND_SEL_CLOCK_MODE_HIGH : 0;
+	pdata->r3_user_settings = 0;
+	if (device_property_read_bool(dev, "adi,cycle-slip-reduction-enable"))
+		pdata->r3_user_settings |= ADF4350_REG3_12BIT_CSR_EN;
+	if (device_property_read_bool(dev, "adi,charge-cancellation-enable"))
+		pdata->r3_user_settings |= ADF4351_REG3_CHARGE_CANCELLATION_EN;
+	if (device_property_read_bool(dev, "adi,anti-backlash-3ns-enable"))
+		pdata->r3_user_settings |= ADF4351_REG3_ANTI_BACKLASH_3ns_EN;
+	if (device_property_read_bool(dev, "adi,band-select-clock-mode-high-enable"))
+		pdata->r3_user_settings |= ADF4351_REG3_BAND_SEL_CLOCK_MODE_HIGH;
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,12bit-clk-divider", &tmp);
+	device_property_read_u32(dev, "adi,12bit-clk-divider", &tmp);
 	pdata->r3_user_settings |= ADF4350_REG3_12BIT_CLKDIV(tmp);
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,clk-divider-mode", &tmp);
+	device_property_read_u32(dev, "adi,clk-divider-mode", &tmp);
 	pdata->r3_user_settings |= ADF4350_REG3_12BIT_CLKDIV_MODE(tmp);
 
 	/* r4_user_settings */
 
-	pdata->r4_user_settings = of_property_read_bool(np,
-			"adi,aux-output-enable") ?
-			ADF4350_REG4_AUX_OUTPUT_EN : 0;
-	pdata->r4_user_settings |= of_property_read_bool(np,
-			"adi,aux-output-fundamental-enable") ?
-			ADF4350_REG4_AUX_OUTPUT_FUND : 0;
-	pdata->r4_user_settings |= of_property_read_bool(np,
-			"adi,mute-till-lock-enable") ?
-			ADF4350_REG4_MUTE_TILL_LOCK_EN : 0;
+	pdata->r4_user_settings = 0;
+	if (device_property_read_bool(dev, "adi,aux-output-enable"))
+		pdata->r4_user_settings |= ADF4350_REG4_AUX_OUTPUT_EN;
+	if (device_property_read_bool(dev, "adi,aux-output-fundamental-enable"))
+		pdata->r4_user_settings |= ADF4350_REG4_AUX_OUTPUT_FUND;
+	if (device_property_read_bool(dev, "adi,mute-till-lock-enable"))
+		pdata->r4_user_settings |= ADF4350_REG4_MUTE_TILL_LOCK_EN;
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,output-power", &tmp);
+	device_property_read_u32(dev, "adi,output-power", &tmp);
 	pdata->r4_user_settings |= ADF4350_REG4_OUTPUT_PWR(tmp);
 
 	tmp = 0;
-	of_property_read_u32(np, "adi,aux-output-power", &tmp);
+	device_property_read_u32(dev, "adi,aux-output-power", &tmp);
 	pdata->r4_user_settings |= ADF4350_REG4_AUX_OUTPUT_PWR(tmp);
 
 	return pdata;
 }
-#else
-static
-struct adf4350_platform_data *adf4350_parse_dt(struct device *dev)
-{
-	return NULL;
-}
-#endif
 
 static int adf4350_probe(struct spi_device *spi)
 {
@@ -489,7 +477,7 @@ static int adf4350_probe(struct spi_device *spi)
 	struct clk *clk = NULL;
 	int ret;
 
-	if (spi->dev.of_node) {
+	if (dev_fwnode(&spi->dev)) {
 		pdata = adf4350_parse_dt(&spi->dev);
 		if (pdata == NULL)
 			return -EINVAL;
@@ -531,7 +519,6 @@ static int adf4350_probe(struct spi_device *spi)
 	st->spi = spi;
 	st->pdata = pdata;
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = (pdata->name[0] != 0) ? pdata->name :
 		spi_get_device_id(spi)->name;
 
@@ -540,6 +527,8 @@ static int adf4350_probe(struct spi_device *spi)
 	indio_dev->channels = &adf4350_chan;
 	indio_dev->num_channels = 1;
 
+	mutex_init(&st->lock);
+
 	st->chspc = pdata->channel_spacing;
 	if (clk) {
 		st->clk = clk;
@@ -555,8 +544,10 @@ static int adf4350_probe(struct spi_device *spi)
 
 	st->lock_detect_gpiod = devm_gpiod_get_optional(&spi->dev, NULL,
 							GPIOD_IN);
-	if (IS_ERR(st->lock_detect_gpiod))
-		return PTR_ERR(st->lock_detect_gpiod);
+	if (IS_ERR(st->lock_detect_gpiod)) {
+		ret = PTR_ERR(st->lock_detect_gpiod);
+		goto error_disable_reg;
+	}
 
 	if (pdata->power_up_frequency) {
 		ret = adf4350_set_freq(st, pdata->power_up_frequency);
@@ -574,13 +565,12 @@ error_disable_reg:
 	if (!IS_ERR(st->reg))
 		regulator_disable(st->reg);
 error_disable_clk:
-	if (clk)
-		clk_disable_unprepare(clk);
+	clk_disable_unprepare(clk);
 
 	return ret;
 }
 
-static int adf4350_remove(struct spi_device *spi)
+static void adf4350_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct adf4350_state *st = iio_priv(indio_dev);
@@ -591,13 +581,10 @@ static int adf4350_remove(struct spi_device *spi)
 
 	iio_device_unregister(indio_dev);
 
-	if (st->clk)
-		clk_disable_unprepare(st->clk);
+	clk_disable_unprepare(st->clk);
 
 	if (!IS_ERR(reg))
 		regulator_disable(reg);
-
-	return 0;
 }
 
 static const struct of_device_id adf4350_of_match[] = {
@@ -617,7 +604,7 @@ MODULE_DEVICE_TABLE(spi, adf4350_id);
 static struct spi_driver adf4350_driver = {
 	.driver = {
 		.name	= "adf4350",
-		.of_match_table = of_match_ptr(adf4350_of_match),
+		.of_match_table = adf4350_of_match,
 	},
 	.probe		= adf4350_probe,
 	.remove		= adf4350_remove,
diff --git a/drivers/iio/frequency/adf4371.c b/drivers/iio/frequency/adf4371.c
index ff82863cbf42..b27088464826 100644
--- a/drivers/iio/frequency/adf4371.c
+++ b/drivers/iio/frequency/adf4371.c
@@ -175,7 +175,7 @@ struct adf4371_state {
 	unsigned int mod2;
 	unsigned int rf_div_sel;
 	unsigned int ref_div_factor;
-	u8 buf[10] ____cacheline_aligned;
+	u8 buf[10] __aligned(IIO_DMA_MINALIGN);
 };
 
 static unsigned long long adf4371_pll_fract_n_get_rate(struct adf4371_state *st,
@@ -540,13 +540,6 @@ static int adf4371_setup(struct adf4371_state *st)
 	return regmap_bulk_write(st->regmap, ADF4371_REG(0x30), st->buf, 5);
 }
 
-static void adf4371_clk_disable(void *data)
-{
-	struct adf4371_state *st = data;
-
-	clk_disable_unprepare(st->clkin);
-}
-
 static int adf4371_probe(struct spi_device *spi)
 {
 	const struct spi_device_id *id = spi_get_device_id(spi);
@@ -573,25 +566,16 @@ static int adf4371_probe(struct spi_device *spi)
 	mutex_init(&st->lock);
 
 	st->chip_info = &adf4371_chip_info[id->driver_data];
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = id->name;
 	indio_dev->info = &adf4371_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 
-	st->clkin = devm_clk_get(&spi->dev, "clkin");
+	st->clkin = devm_clk_get_enabled(&spi->dev, "clkin");
 	if (IS_ERR(st->clkin))
 		return PTR_ERR(st->clkin);
 
-	ret = clk_prepare_enable(st->clkin);
-	if (ret < 0)
-		return ret;
-
-	ret = devm_add_action_or_reset(&spi->dev, adf4371_clk_disable, st);
-	if (ret)
-		return ret;
-
 	st->clkin_freq = clk_get_rate(st->clkin);
 
 	ret = adf4371_setup(st);
diff --git a/drivers/iio/frequency/admv1013.c b/drivers/iio/frequency/admv1013.c
new file mode 100644
index 000000000000..ed8167271358
--- /dev/null
+++ b/drivers/iio/frequency/admv1013.c
@@ -0,0 +1,656 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADMV1013 driver
+ *
+ * Copyright 2021 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/notifier.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+/* ADMV1013 Register Map */
+#define ADMV1013_REG_SPI_CONTROL		0x00
+#define ADMV1013_REG_ALARM			0x01
+#define ADMV1013_REG_ALARM_MASKS		0x02
+#define ADMV1013_REG_ENABLE			0x03
+#define ADMV1013_REG_LO_AMP_I			0x05
+#define ADMV1013_REG_LO_AMP_Q			0x06
+#define ADMV1013_REG_OFFSET_ADJUST_I		0x07
+#define ADMV1013_REG_OFFSET_ADJUST_Q		0x08
+#define ADMV1013_REG_QUAD			0x09
+#define ADMV1013_REG_VVA_TEMP_COMP		0x0A
+
+/* ADMV1013_REG_SPI_CONTROL Map */
+#define ADMV1013_PARITY_EN_MSK			BIT(15)
+#define ADMV1013_SPI_SOFT_RESET_MSK		BIT(14)
+#define ADMV1013_CHIP_ID_MSK			GENMASK(11, 4)
+#define ADMV1013_CHIP_ID			0xA
+#define ADMV1013_REVISION_ID_MSK		GENMASK(3, 0)
+
+/* ADMV1013_REG_ALARM Map */
+#define ADMV1013_PARITY_ERROR_MSK		BIT(15)
+#define ADMV1013_TOO_FEW_ERRORS_MSK		BIT(14)
+#define ADMV1013_TOO_MANY_ERRORS_MSK		BIT(13)
+#define ADMV1013_ADDRESS_RANGE_ERROR_MSK	BIT(12)
+
+/* ADMV1013_REG_ENABLE Map */
+#define ADMV1013_VGA_PD_MSK			BIT(15)
+#define ADMV1013_MIXER_PD_MSK			BIT(14)
+#define ADMV1013_QUAD_PD_MSK			GENMASK(13, 11)
+#define ADMV1013_BG_PD_MSK			BIT(10)
+#define ADMV1013_MIXER_IF_EN_MSK		BIT(7)
+#define ADMV1013_DET_EN_MSK			BIT(5)
+
+/* ADMV1013_REG_LO_AMP Map */
+#define ADMV1013_LOAMP_PH_ADJ_FINE_MSK		GENMASK(13, 7)
+#define ADMV1013_MIXER_VGATE_MSK		GENMASK(6, 0)
+
+/* ADMV1013_REG_OFFSET_ADJUST Map */
+#define ADMV1013_MIXER_OFF_ADJ_P_MSK		GENMASK(15, 9)
+#define ADMV1013_MIXER_OFF_ADJ_N_MSK		GENMASK(8, 2)
+
+/* ADMV1013_REG_QUAD Map */
+#define ADMV1013_QUAD_SE_MODE_MSK		GENMASK(9, 6)
+#define ADMV1013_QUAD_FILTERS_MSK		GENMASK(3, 0)
+
+/* ADMV1013_REG_VVA_TEMP_COMP Map */
+#define ADMV1013_VVA_TEMP_COMP_MSK		GENMASK(15, 0)
+
+/* ADMV1013 Miscellaneous Defines */
+#define ADMV1013_READ				BIT(7)
+#define ADMV1013_REG_ADDR_READ_MSK		GENMASK(6, 1)
+#define ADMV1013_REG_ADDR_WRITE_MSK		GENMASK(22, 17)
+#define ADMV1013_REG_DATA_MSK			GENMASK(16, 1)
+
+enum {
+	ADMV1013_IQ_MODE,
+	ADMV1013_IF_MODE
+};
+
+enum {
+	ADMV1013_RFMOD_I_CALIBPHASE,
+	ADMV1013_RFMOD_Q_CALIBPHASE,
+};
+
+enum {
+	ADMV1013_SE_MODE_POS = 6,
+	ADMV1013_SE_MODE_NEG = 9,
+	ADMV1013_SE_MODE_DIFF = 12
+};
+
+struct admv1013_state {
+	struct spi_device	*spi;
+	struct clk		*clkin;
+	/* Protect against concurrent accesses to the device and to data */
+	struct mutex		lock;
+	struct regulator	*reg;
+	struct notifier_block	nb;
+	unsigned int		input_mode;
+	unsigned int		quad_se_mode;
+	bool			det_en;
+	u8			data[3] __aligned(IIO_DMA_MINALIGN);
+};
+
+static int __admv1013_spi_read(struct admv1013_state *st, unsigned int reg,
+			       unsigned int *val)
+{
+	int ret;
+	struct spi_transfer t = {0};
+
+	st->data[0] = ADMV1013_READ | FIELD_PREP(ADMV1013_REG_ADDR_READ_MSK, reg);
+	st->data[1] = 0x0;
+	st->data[2] = 0x0;
+
+	t.rx_buf = &st->data[0];
+	t.tx_buf = &st->data[0];
+	t.len = 3;
+
+	ret = spi_sync_transfer(st->spi, &t, 1);
+	if (ret)
+		return ret;
+
+	*val = FIELD_GET(ADMV1013_REG_DATA_MSK, get_unaligned_be24(&st->data[0]));
+
+	return ret;
+}
+
+static int admv1013_spi_read(struct admv1013_state *st, unsigned int reg,
+			     unsigned int *val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv1013_spi_read(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __admv1013_spi_write(struct admv1013_state *st,
+				unsigned int reg,
+				unsigned int val)
+{
+	put_unaligned_be24(FIELD_PREP(ADMV1013_REG_DATA_MSK, val) |
+			   FIELD_PREP(ADMV1013_REG_ADDR_WRITE_MSK, reg), &st->data[0]);
+
+	return spi_write(st->spi, &st->data[0], 3);
+}
+
+static int admv1013_spi_write(struct admv1013_state *st, unsigned int reg,
+			      unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv1013_spi_write(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __admv1013_spi_update_bits(struct admv1013_state *st, unsigned int reg,
+				      unsigned int mask, unsigned int val)
+{
+	int ret;
+	unsigned int data, temp;
+
+	ret = __admv1013_spi_read(st, reg, &data);
+	if (ret)
+		return ret;
+
+	temp = (data & ~mask) | (val & mask);
+
+	return __admv1013_spi_write(st, reg, temp);
+}
+
+static int admv1013_spi_update_bits(struct admv1013_state *st, unsigned int reg,
+				    unsigned int mask, unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv1013_spi_update_bits(st, reg, mask, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int admv1013_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long info)
+{
+	struct admv1013_state *st = iio_priv(indio_dev);
+	unsigned int data, addr;
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		switch (chan->channel) {
+		case IIO_MOD_I:
+			addr = ADMV1013_REG_OFFSET_ADJUST_I;
+			break;
+		case IIO_MOD_Q:
+			addr = ADMV1013_REG_OFFSET_ADJUST_Q;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		ret = admv1013_spi_read(st, addr, &data);
+		if (ret)
+			return ret;
+
+		if (!chan->channel)
+			*val = FIELD_GET(ADMV1013_MIXER_OFF_ADJ_P_MSK, data);
+		else
+			*val = FIELD_GET(ADMV1013_MIXER_OFF_ADJ_N_MSK, data);
+
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int admv1013_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long info)
+{
+	struct admv1013_state *st = iio_priv(indio_dev);
+	unsigned int addr, data, msk;
+
+	switch (info) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		switch (chan->channel2) {
+		case IIO_MOD_I:
+			addr = ADMV1013_REG_OFFSET_ADJUST_I;
+			break;
+		case IIO_MOD_Q:
+			addr = ADMV1013_REG_OFFSET_ADJUST_Q;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		if (!chan->channel) {
+			msk = ADMV1013_MIXER_OFF_ADJ_P_MSK;
+			data = FIELD_PREP(ADMV1013_MIXER_OFF_ADJ_P_MSK, val);
+		} else {
+			msk = ADMV1013_MIXER_OFF_ADJ_N_MSK;
+			data = FIELD_PREP(ADMV1013_MIXER_OFF_ADJ_N_MSK, val);
+		}
+
+		return admv1013_spi_update_bits(st, addr, msk, data);
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t admv1013_read(struct iio_dev *indio_dev,
+			     uintptr_t private,
+			     const struct iio_chan_spec *chan,
+			     char *buf)
+{
+	struct admv1013_state *st = iio_priv(indio_dev);
+	unsigned int data, addr;
+	int ret;
+
+	switch ((u32)private) {
+	case ADMV1013_RFMOD_I_CALIBPHASE:
+		addr = ADMV1013_REG_LO_AMP_I;
+		break;
+	case ADMV1013_RFMOD_Q_CALIBPHASE:
+		addr = ADMV1013_REG_LO_AMP_Q;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = admv1013_spi_read(st, addr, &data);
+	if (ret)
+		return ret;
+
+	data = FIELD_GET(ADMV1013_LOAMP_PH_ADJ_FINE_MSK, data);
+
+	return sysfs_emit(buf, "%u\n", data);
+}
+
+static ssize_t admv1013_write(struct iio_dev *indio_dev,
+			      uintptr_t private,
+			      const struct iio_chan_spec *chan,
+			      const char *buf, size_t len)
+{
+	struct admv1013_state *st = iio_priv(indio_dev);
+	unsigned int data;
+	int ret;
+
+	ret = kstrtou32(buf, 10, &data);
+	if (ret)
+		return ret;
+
+	data = FIELD_PREP(ADMV1013_LOAMP_PH_ADJ_FINE_MSK, data);
+
+	switch ((u32)private) {
+	case ADMV1013_RFMOD_I_CALIBPHASE:
+		ret = admv1013_spi_update_bits(st, ADMV1013_REG_LO_AMP_I,
+					       ADMV1013_LOAMP_PH_ADJ_FINE_MSK,
+					       data);
+		if (ret)
+			return ret;
+		break;
+	case ADMV1013_RFMOD_Q_CALIBPHASE:
+		ret = admv1013_spi_update_bits(st, ADMV1013_REG_LO_AMP_Q,
+					       ADMV1013_LOAMP_PH_ADJ_FINE_MSK,
+					       data);
+		if (ret)
+			return ret;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return ret ? ret : len;
+}
+
+static int admv1013_update_quad_filters(struct admv1013_state *st)
+{
+	unsigned int filt_raw;
+	u64 rate = clk_get_rate(st->clkin);
+
+	if (rate >= (5400 * HZ_PER_MHZ) && rate <= (7000 * HZ_PER_MHZ))
+		filt_raw = 15;
+	else if (rate >= (5400 * HZ_PER_MHZ) && rate <= (8000 * HZ_PER_MHZ))
+		filt_raw = 10;
+	else if (rate >= (6600 * HZ_PER_MHZ) && rate <= (9200 * HZ_PER_MHZ))
+		filt_raw = 5;
+	else
+		filt_raw = 0;
+
+	return __admv1013_spi_update_bits(st, ADMV1013_REG_QUAD,
+					ADMV1013_QUAD_FILTERS_MSK,
+					FIELD_PREP(ADMV1013_QUAD_FILTERS_MSK, filt_raw));
+}
+
+static int admv1013_update_mixer_vgate(struct admv1013_state *st)
+{
+	unsigned int vcm, mixer_vgate;
+
+	vcm = regulator_get_voltage(st->reg);
+
+	if (vcm < 1800000)
+		mixer_vgate = (2389 * vcm / 1000000 + 8100) / 100;
+	else if (vcm > 1800000 && vcm < 2600000)
+		mixer_vgate = (2375 * vcm / 1000000 + 125) / 100;
+	else
+		return -EINVAL;
+
+	return __admv1013_spi_update_bits(st, ADMV1013_REG_LO_AMP_I,
+				 ADMV1013_MIXER_VGATE_MSK,
+				 FIELD_PREP(ADMV1013_MIXER_VGATE_MSK, mixer_vgate));
+}
+
+static int admv1013_reg_access(struct iio_dev *indio_dev,
+			       unsigned int reg,
+			       unsigned int write_val,
+			       unsigned int *read_val)
+{
+	struct admv1013_state *st = iio_priv(indio_dev);
+
+	if (read_val)
+		return admv1013_spi_read(st, reg, read_val);
+	else
+		return admv1013_spi_write(st, reg, write_val);
+}
+
+static const struct iio_info admv1013_info = {
+	.read_raw = admv1013_read_raw,
+	.write_raw = admv1013_write_raw,
+	.debugfs_reg_access = &admv1013_reg_access,
+};
+
+static int admv1013_freq_change(struct notifier_block *nb, unsigned long action, void *data)
+{
+	struct admv1013_state *st = container_of(nb, struct admv1013_state, nb);
+	int ret;
+
+	if (action == POST_RATE_CHANGE) {
+		mutex_lock(&st->lock);
+		ret = notifier_from_errno(admv1013_update_quad_filters(st));
+		mutex_unlock(&st->lock);
+		return ret;
+	}
+
+	return NOTIFY_OK;
+}
+
+#define _ADMV1013_EXT_INFO(_name, _shared, _ident) { \
+		.name = _name, \
+		.read = admv1013_read, \
+		.write = admv1013_write, \
+		.private = _ident, \
+		.shared = _shared, \
+}
+
+static const struct iio_chan_spec_ext_info admv1013_ext_info[] = {
+	_ADMV1013_EXT_INFO("i_calibphase", IIO_SEPARATE, ADMV1013_RFMOD_I_CALIBPHASE),
+	_ADMV1013_EXT_INFO("q_calibphase", IIO_SEPARATE, ADMV1013_RFMOD_Q_CALIBPHASE),
+	{ },
+};
+
+#define ADMV1013_CHAN_PHASE(_channel, _channel2, _admv1013_ext_info) {		\
+	.type = IIO_ALTVOLTAGE,					\
+	.output = 0,						\
+	.indexed = 1,						\
+	.channel2 = _channel2,					\
+	.channel = _channel,					\
+	.differential = 1,					\
+	.ext_info = _admv1013_ext_info,				\
+	}
+
+#define ADMV1013_CHAN_CALIB(_channel, rf_comp) {	\
+	.type = IIO_ALTVOLTAGE,					\
+	.output = 0,						\
+	.indexed = 1,						\
+	.channel = _channel,					\
+	.channel2 = IIO_MOD_##rf_comp,				\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_CALIBBIAS),	\
+	}
+
+static const struct iio_chan_spec admv1013_channels[] = {
+	ADMV1013_CHAN_PHASE(0, 1, admv1013_ext_info),
+	ADMV1013_CHAN_CALIB(0, I),
+	ADMV1013_CHAN_CALIB(0, Q),
+	ADMV1013_CHAN_CALIB(1, I),
+	ADMV1013_CHAN_CALIB(1, Q),
+};
+
+static int admv1013_init(struct admv1013_state *st)
+{
+	int ret;
+	unsigned int data;
+	struct spi_device *spi = st->spi;
+
+	/* Perform a software reset */
+	ret = __admv1013_spi_update_bits(st, ADMV1013_REG_SPI_CONTROL,
+					 ADMV1013_SPI_SOFT_RESET_MSK,
+					 FIELD_PREP(ADMV1013_SPI_SOFT_RESET_MSK, 1));
+	if (ret)
+		return ret;
+
+	ret = __admv1013_spi_update_bits(st, ADMV1013_REG_SPI_CONTROL,
+					 ADMV1013_SPI_SOFT_RESET_MSK,
+					 FIELD_PREP(ADMV1013_SPI_SOFT_RESET_MSK, 0));
+	if (ret)
+		return ret;
+
+	ret = __admv1013_spi_read(st, ADMV1013_REG_SPI_CONTROL, &data);
+	if (ret)
+		return ret;
+
+	data = FIELD_GET(ADMV1013_CHIP_ID_MSK, data);
+	if (data != ADMV1013_CHIP_ID) {
+		dev_err(&spi->dev, "Invalid Chip ID.\n");
+		return -EINVAL;
+	}
+
+	ret = __admv1013_spi_write(st, ADMV1013_REG_VVA_TEMP_COMP, 0xE700);
+	if (ret)
+		return ret;
+
+	data = FIELD_PREP(ADMV1013_QUAD_SE_MODE_MSK, st->quad_se_mode);
+
+	ret = __admv1013_spi_update_bits(st, ADMV1013_REG_QUAD,
+					 ADMV1013_QUAD_SE_MODE_MSK, data);
+	if (ret)
+		return ret;
+
+	ret = admv1013_update_mixer_vgate(st);
+	if (ret)
+		return ret;
+
+	ret = admv1013_update_quad_filters(st);
+	if (ret)
+		return ret;
+
+	return __admv1013_spi_update_bits(st, ADMV1013_REG_ENABLE,
+					  ADMV1013_DET_EN_MSK |
+					  ADMV1013_MIXER_IF_EN_MSK,
+					  st->det_en |
+					  st->input_mode);
+}
+
+static void admv1013_clk_disable(void *data)
+{
+	clk_disable_unprepare(data);
+}
+
+static void admv1013_reg_disable(void *data)
+{
+	regulator_disable(data);
+}
+
+static void admv1013_powerdown(void *data)
+{
+	unsigned int enable_reg, enable_reg_msk;
+
+	/* Disable all components in the Enable Register */
+	enable_reg_msk = ADMV1013_VGA_PD_MSK |
+			ADMV1013_MIXER_PD_MSK |
+			ADMV1013_QUAD_PD_MSK |
+			ADMV1013_BG_PD_MSK |
+			ADMV1013_MIXER_IF_EN_MSK |
+			ADMV1013_DET_EN_MSK;
+
+	enable_reg = FIELD_PREP(ADMV1013_VGA_PD_MSK, 1) |
+			FIELD_PREP(ADMV1013_MIXER_PD_MSK, 1) |
+			FIELD_PREP(ADMV1013_QUAD_PD_MSK, 7) |
+			FIELD_PREP(ADMV1013_BG_PD_MSK, 1) |
+			FIELD_PREP(ADMV1013_MIXER_IF_EN_MSK, 0) |
+			FIELD_PREP(ADMV1013_DET_EN_MSK, 0);
+
+	admv1013_spi_update_bits(data, ADMV1013_REG_ENABLE, enable_reg_msk, enable_reg);
+}
+
+static int admv1013_properties_parse(struct admv1013_state *st)
+{
+	int ret;
+	const char *str;
+	struct spi_device *spi = st->spi;
+
+	st->det_en = device_property_read_bool(&spi->dev, "adi,detector-enable");
+
+	ret = device_property_read_string(&spi->dev, "adi,input-mode", &str);
+	if (ret)
+		st->input_mode = ADMV1013_IQ_MODE;
+
+	if (!strcmp(str, "iq"))
+		st->input_mode = ADMV1013_IQ_MODE;
+	else if (!strcmp(str, "if"))
+		st->input_mode = ADMV1013_IF_MODE;
+	else
+		return -EINVAL;
+
+	ret = device_property_read_string(&spi->dev, "adi,quad-se-mode", &str);
+	if (ret)
+		st->quad_se_mode = ADMV1013_SE_MODE_DIFF;
+
+	if (!strcmp(str, "diff"))
+		st->quad_se_mode = ADMV1013_SE_MODE_DIFF;
+	else if (!strcmp(str, "se-pos"))
+		st->quad_se_mode = ADMV1013_SE_MODE_POS;
+	else if (!strcmp(str, "se-neg"))
+		st->quad_se_mode = ADMV1013_SE_MODE_NEG;
+	else
+		return -EINVAL;
+
+	st->reg = devm_regulator_get(&spi->dev, "vcm");
+	if (IS_ERR(st->reg))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->reg),
+				     "failed to get the common-mode voltage\n");
+
+	st->clkin = devm_clk_get(&spi->dev, "lo_in");
+	if (IS_ERR(st->clkin))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
+				     "failed to get the LO input clock\n");
+
+	return 0;
+}
+
+static int admv1013_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct admv1013_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	indio_dev->info = &admv1013_info;
+	indio_dev->name = "admv1013";
+	indio_dev->channels = admv1013_channels;
+	indio_dev->num_channels = ARRAY_SIZE(admv1013_channels);
+
+	st->spi = spi;
+
+	ret = admv1013_properties_parse(st);
+	if (ret)
+		return ret;
+
+	ret = regulator_enable(st->reg);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to enable specified Common-Mode Voltage!\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, admv1013_reg_disable,
+				       st->reg);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(st->clkin);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, admv1013_clk_disable, st->clkin);
+	if (ret)
+		return ret;
+
+	st->nb.notifier_call = admv1013_freq_change;
+	ret = devm_clk_notifier_register(&spi->dev, st->clkin, &st->nb);
+	if (ret)
+		return ret;
+
+	mutex_init(&st->lock);
+
+	ret = admv1013_init(st);
+	if (ret) {
+		dev_err(&spi->dev, "admv1013 init failed\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, admv1013_powerdown, st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id admv1013_id[] = {
+	{ "admv1013", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, admv1013_id);
+
+static const struct of_device_id admv1013_of_match[] = {
+	{ .compatible = "adi,admv1013" },
+	{},
+};
+MODULE_DEVICE_TABLE(of, admv1013_of_match);
+
+static struct spi_driver admv1013_driver = {
+	.driver = {
+		.name = "admv1013",
+		.of_match_table = admv1013_of_match,
+	},
+	.probe = admv1013_probe,
+	.id_table = admv1013_id,
+};
+module_spi_driver(admv1013_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com");
+MODULE_DESCRIPTION("Analog Devices ADMV1013");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/frequency/admv1014.c b/drivers/iio/frequency/admv1014.c
new file mode 100644
index 000000000000..bb5e1feef42b
--- /dev/null
+++ b/drivers/iio/frequency/admv1014.c
@@ -0,0 +1,824 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADMV1014 driver
+ *
+ * Copyright 2022 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/notifier.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+/* ADMV1014 Register Map */
+#define ADMV1014_REG_SPI_CONTROL		0x00
+#define ADMV1014_REG_ALARM			0x01
+#define ADMV1014_REG_ALARM_MASKS		0x02
+#define ADMV1014_REG_ENABLE			0x03
+#define ADMV1014_REG_QUAD			0x04
+#define ADMV1014_REG_LO_AMP_PHASE_ADJUST1	0x05
+#define ADMV1014_REG_MIXER			0x07
+#define ADMV1014_REG_IF_AMP			0x08
+#define ADMV1014_REG_IF_AMP_BB_AMP		0x09
+#define ADMV1014_REG_BB_AMP_AGC			0x0A
+#define ADMV1014_REG_VVA_TEMP_COMP		0x0B
+
+/* ADMV1014_REG_SPI_CONTROL Map */
+#define ADMV1014_PARITY_EN_MSK			BIT(15)
+#define ADMV1014_SPI_SOFT_RESET_MSK		BIT(14)
+#define ADMV1014_CHIP_ID_MSK			GENMASK(11, 4)
+#define ADMV1014_CHIP_ID			0x9
+#define ADMV1014_REVISION_ID_MSK		GENMASK(3, 0)
+
+/* ADMV1014_REG_ALARM Map */
+#define ADMV1014_PARITY_ERROR_MSK		BIT(15)
+#define ADMV1014_TOO_FEW_ERRORS_MSK		BIT(14)
+#define ADMV1014_TOO_MANY_ERRORS_MSK		BIT(13)
+#define ADMV1014_ADDRESS_RANGE_ERROR_MSK	BIT(12)
+
+/* ADMV1014_REG_ENABLE Map */
+#define ADMV1014_IBIAS_PD_MSK			BIT(14)
+#define ADMV1014_P1DB_COMPENSATION_MSK		GENMASK(13, 12)
+#define ADMV1014_IF_AMP_PD_MSK			BIT(11)
+#define ADMV1014_QUAD_BG_PD_MSK			BIT(9)
+#define ADMV1014_BB_AMP_PD_MSK			BIT(8)
+#define ADMV1014_QUAD_IBIAS_PD_MSK		BIT(7)
+#define ADMV1014_DET_EN_MSK			BIT(6)
+#define ADMV1014_BG_PD_MSK			BIT(5)
+
+/* ADMV1014_REG_QUAD Map */
+#define ADMV1014_QUAD_SE_MODE_MSK		GENMASK(9, 6)
+#define ADMV1014_QUAD_FILTERS_MSK		GENMASK(3, 0)
+
+/* ADMV1014_REG_LO_AMP_PHASE_ADJUST1 Map */
+#define ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK	GENMASK(15, 9)
+#define ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK	GENMASK(8, 2)
+
+/* ADMV1014_REG_MIXER Map */
+#define ADMV1014_MIXER_VGATE_MSK		GENMASK(15, 9)
+#define ADMV1014_DET_PROG_MSK			GENMASK(6, 0)
+
+/* ADMV1014_REG_IF_AMP Map */
+#define ADMV1014_IF_AMP_COARSE_GAIN_I_MSK	GENMASK(11, 8)
+#define ADMV1014_IF_AMP_FINE_GAIN_Q_MSK		GENMASK(7, 4)
+#define ADMV1014_IF_AMP_FINE_GAIN_I_MSK		GENMASK(3, 0)
+
+/* ADMV1014_REG_IF_AMP_BB_AMP Map */
+#define ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK	GENMASK(15, 12)
+#define ADMV1014_BB_AMP_OFFSET_Q_MSK		GENMASK(9, 5)
+#define ADMV1014_BB_AMP_OFFSET_I_MSK		GENMASK(4, 0)
+
+/* ADMV1014_REG_BB_AMP_AGC Map */
+#define ADMV1014_BB_AMP_REF_GEN_MSK		GENMASK(6, 3)
+#define ADMV1014_BB_AMP_GAIN_CTRL_MSK		GENMASK(2, 1)
+#define ADMV1014_BB_SWITCH_HIGH_LOW_CM_MSK	BIT(0)
+
+/* ADMV1014_REG_VVA_TEMP_COMP Map */
+#define ADMV1014_VVA_TEMP_COMP_MSK		GENMASK(15, 0)
+
+/* ADMV1014 Miscellaneous Defines */
+#define ADMV1014_READ				BIT(7)
+#define ADMV1014_REG_ADDR_READ_MSK		GENMASK(6, 1)
+#define ADMV1014_REG_ADDR_WRITE_MSK		GENMASK(22, 17)
+#define ADMV1014_REG_DATA_MSK			GENMASK(16, 1)
+#define ADMV1014_NUM_REGULATORS			9
+
+enum {
+	ADMV1014_IQ_MODE,
+	ADMV1014_IF_MODE,
+};
+
+enum {
+	ADMV1014_SE_MODE_POS = 6,
+	ADMV1014_SE_MODE_NEG = 9,
+	ADMV1014_SE_MODE_DIFF = 12,
+};
+
+enum {
+	ADMV1014_CALIBSCALE_COARSE,
+	ADMV1014_CALIBSCALE_FINE,
+};
+
+static const int detector_table[] = {0, 1, 2, 4, 8, 16, 32, 64};
+
+static const char * const input_mode_names[] = { "iq", "if" };
+
+static const char * const quad_se_mode_names[] = { "se-pos", "se-neg", "diff" };
+
+struct admv1014_state {
+	struct spi_device		*spi;
+	struct clk			*clkin;
+	struct notifier_block		nb;
+	/* Protect against concurrent accesses to the device and to data*/
+	struct mutex			lock;
+	struct regulator_bulk_data	regulators[ADMV1014_NUM_REGULATORS];
+	unsigned int			input_mode;
+	unsigned int			quad_se_mode;
+	unsigned int			p1db_comp;
+	bool				det_en;
+	u8				data[3] __aligned(IIO_DMA_MINALIGN);
+};
+
+static const int mixer_vgate_table[] = {106, 107, 108, 110, 111, 112, 113, 114,
+					117, 118, 119, 120, 122, 123, 44, 45};
+
+static int __admv1014_spi_read(struct admv1014_state *st, unsigned int reg,
+			       unsigned int *val)
+{
+	struct spi_transfer t = {};
+	int ret;
+
+	st->data[0] = ADMV1014_READ | FIELD_PREP(ADMV1014_REG_ADDR_READ_MSK, reg);
+	st->data[1] = 0;
+	st->data[2] = 0;
+
+	t.rx_buf = &st->data[0];
+	t.tx_buf = &st->data[0];
+	t.len = sizeof(st->data);
+
+	ret = spi_sync_transfer(st->spi, &t, 1);
+	if (ret)
+		return ret;
+
+	*val = FIELD_GET(ADMV1014_REG_DATA_MSK, get_unaligned_be24(&st->data[0]));
+
+	return ret;
+}
+
+static int admv1014_spi_read(struct admv1014_state *st, unsigned int reg,
+			     unsigned int *val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv1014_spi_read(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __admv1014_spi_write(struct admv1014_state *st,
+				unsigned int reg,
+				unsigned int val)
+{
+	put_unaligned_be24(FIELD_PREP(ADMV1014_REG_DATA_MSK, val) |
+			   FIELD_PREP(ADMV1014_REG_ADDR_WRITE_MSK, reg), &st->data[0]);
+
+	return spi_write(st->spi, &st->data[0], 3);
+}
+
+static int admv1014_spi_write(struct admv1014_state *st, unsigned int reg,
+			      unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv1014_spi_write(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __admv1014_spi_update_bits(struct admv1014_state *st, unsigned int reg,
+				      unsigned int mask, unsigned int val)
+{
+	unsigned int data, temp;
+	int ret;
+
+	ret = __admv1014_spi_read(st, reg, &data);
+	if (ret)
+		return ret;
+
+	temp = (data & ~mask) | (val & mask);
+
+	return __admv1014_spi_write(st, reg, temp);
+}
+
+static int admv1014_spi_update_bits(struct admv1014_state *st, unsigned int reg,
+				    unsigned int mask, unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __admv1014_spi_update_bits(st, reg, mask, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int admv1014_update_quad_filters(struct admv1014_state *st)
+{
+	unsigned int filt_raw;
+	u64 rate = clk_get_rate(st->clkin);
+
+	if (rate >= (5400 * HZ_PER_MHZ) && rate <= (7000 * HZ_PER_MHZ))
+		filt_raw = 15;
+	else if (rate > (7000 * HZ_PER_MHZ) && rate <= (8000 * HZ_PER_MHZ))
+		filt_raw = 10;
+	else if (rate > (8000 * HZ_PER_MHZ) && rate <= (9200 * HZ_PER_MHZ))
+		filt_raw = 5;
+	else
+		filt_raw = 0;
+
+	return __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD,
+					ADMV1014_QUAD_FILTERS_MSK,
+					FIELD_PREP(ADMV1014_QUAD_FILTERS_MSK, filt_raw));
+}
+
+static int admv1014_update_vcm_settings(struct admv1014_state *st)
+{
+	unsigned int i, vcm_mv, vcm_comp, bb_sw_hl_cm;
+	int ret;
+
+	vcm_mv = regulator_get_voltage(st->regulators[0].consumer) / 1000;
+	for (i = 0; i < ARRAY_SIZE(mixer_vgate_table); i++) {
+		vcm_comp = 1050 + mult_frac(i, 450, 8);
+		if (vcm_mv != vcm_comp)
+			continue;
+
+		ret = __admv1014_spi_update_bits(st, ADMV1014_REG_MIXER,
+						 ADMV1014_MIXER_VGATE_MSK,
+						 FIELD_PREP(ADMV1014_MIXER_VGATE_MSK,
+							    mixer_vgate_table[i]));
+		if (ret)
+			return ret;
+
+		bb_sw_hl_cm = ~(i / 8);
+		bb_sw_hl_cm = FIELD_PREP(ADMV1014_BB_SWITCH_HIGH_LOW_CM_MSK, bb_sw_hl_cm);
+
+		return __admv1014_spi_update_bits(st, ADMV1014_REG_BB_AMP_AGC,
+						  ADMV1014_BB_AMP_REF_GEN_MSK |
+						  ADMV1014_BB_SWITCH_HIGH_LOW_CM_MSK,
+						  FIELD_PREP(ADMV1014_BB_AMP_REF_GEN_MSK, i) |
+						  bb_sw_hl_cm);
+	}
+
+	return -EINVAL;
+}
+
+static int admv1014_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long info)
+{
+	struct admv1014_state *st = iio_priv(indio_dev);
+	unsigned int data;
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_OFFSET:
+		ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP_BB_AMP, &data);
+		if (ret)
+			return ret;
+
+		if (chan->channel2 == IIO_MOD_I)
+			*val = FIELD_GET(ADMV1014_BB_AMP_OFFSET_I_MSK, data);
+		else
+			*val = FIELD_GET(ADMV1014_BB_AMP_OFFSET_Q_MSK, data);
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_PHASE:
+		ret = admv1014_spi_read(st, ADMV1014_REG_LO_AMP_PHASE_ADJUST1, &data);
+		if (ret)
+			return ret;
+
+		if (chan->channel2 == IIO_MOD_I)
+			*val = FIELD_GET(ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK, data);
+		else
+			*val = FIELD_GET(ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK, data);
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		ret = admv1014_spi_read(st, ADMV1014_REG_MIXER, &data);
+		if (ret)
+			return ret;
+
+		*val = FIELD_GET(ADMV1014_DET_PROG_MSK, data);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		ret = admv1014_spi_read(st, ADMV1014_REG_BB_AMP_AGC, &data);
+		if (ret)
+			return ret;
+
+		*val = FIELD_GET(ADMV1014_BB_AMP_GAIN_CTRL_MSK, data);
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int admv1014_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long info)
+{
+	int data;
+	unsigned int msk;
+	struct admv1014_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_OFFSET:
+		if (chan->channel2 == IIO_MOD_I) {
+			msk = ADMV1014_BB_AMP_OFFSET_I_MSK;
+			data = FIELD_PREP(ADMV1014_BB_AMP_OFFSET_I_MSK, val);
+		} else {
+			msk = ADMV1014_BB_AMP_OFFSET_Q_MSK;
+			data = FIELD_PREP(ADMV1014_BB_AMP_OFFSET_Q_MSK, val);
+		}
+
+		return admv1014_spi_update_bits(st, ADMV1014_REG_IF_AMP_BB_AMP, msk, data);
+	case IIO_CHAN_INFO_PHASE:
+		if (chan->channel2 == IIO_MOD_I) {
+			msk = ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK;
+			data = FIELD_PREP(ADMV1014_LOAMP_PH_ADJ_I_FINE_MSK, val);
+		} else {
+			msk = ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK;
+			data = FIELD_PREP(ADMV1014_LOAMP_PH_ADJ_Q_FINE_MSK, val);
+		}
+
+		return admv1014_spi_update_bits(st, ADMV1014_REG_LO_AMP_PHASE_ADJUST1, msk, data);
+	case IIO_CHAN_INFO_SCALE:
+		return admv1014_spi_update_bits(st, ADMV1014_REG_MIXER,
+						ADMV1014_DET_PROG_MSK,
+						FIELD_PREP(ADMV1014_DET_PROG_MSK, val));
+	case IIO_CHAN_INFO_CALIBSCALE:
+		return admv1014_spi_update_bits(st, ADMV1014_REG_BB_AMP_AGC,
+						ADMV1014_BB_AMP_GAIN_CTRL_MSK,
+						FIELD_PREP(ADMV1014_BB_AMP_GAIN_CTRL_MSK, val));
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t admv1014_read(struct iio_dev *indio_dev,
+			     uintptr_t private,
+			     const struct iio_chan_spec *chan,
+			     char *buf)
+{
+	struct admv1014_state *st = iio_priv(indio_dev);
+	unsigned int data;
+	int ret;
+
+	switch (private) {
+	case ADMV1014_CALIBSCALE_COARSE:
+		if (chan->channel2 == IIO_MOD_I) {
+			ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP, &data);
+			if (ret)
+				return ret;
+
+			data = FIELD_GET(ADMV1014_IF_AMP_COARSE_GAIN_I_MSK, data);
+		} else {
+			ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP_BB_AMP, &data);
+			if (ret)
+				return ret;
+
+			data = FIELD_GET(ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK, data);
+		}
+		break;
+	case ADMV1014_CALIBSCALE_FINE:
+		ret = admv1014_spi_read(st, ADMV1014_REG_IF_AMP, &data);
+		if (ret)
+			return ret;
+
+		if (chan->channel2 == IIO_MOD_I)
+			data = FIELD_GET(ADMV1014_IF_AMP_FINE_GAIN_I_MSK, data);
+		else
+			data = FIELD_GET(ADMV1014_IF_AMP_FINE_GAIN_Q_MSK, data);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return sysfs_emit(buf, "%u\n", data);
+}
+
+static ssize_t admv1014_write(struct iio_dev *indio_dev,
+			      uintptr_t private,
+			      const struct iio_chan_spec *chan,
+			      const char *buf, size_t len)
+{
+	struct admv1014_state *st = iio_priv(indio_dev);
+	unsigned int data, addr, msk;
+	int ret;
+
+	ret = kstrtouint(buf, 10, &data);
+	if (ret)
+		return ret;
+
+	switch (private) {
+	case ADMV1014_CALIBSCALE_COARSE:
+		if (chan->channel2 == IIO_MOD_I) {
+			addr = ADMV1014_REG_IF_AMP;
+			msk = ADMV1014_IF_AMP_COARSE_GAIN_I_MSK;
+			data = FIELD_PREP(ADMV1014_IF_AMP_COARSE_GAIN_I_MSK, data);
+		} else {
+			addr = ADMV1014_REG_IF_AMP_BB_AMP;
+			msk = ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK;
+			data = FIELD_PREP(ADMV1014_IF_AMP_COARSE_GAIN_Q_MSK, data);
+		}
+		break;
+	case ADMV1014_CALIBSCALE_FINE:
+		addr = ADMV1014_REG_IF_AMP;
+
+		if (chan->channel2 == IIO_MOD_I) {
+			msk = ADMV1014_IF_AMP_FINE_GAIN_I_MSK;
+			data = FIELD_PREP(ADMV1014_IF_AMP_FINE_GAIN_I_MSK, data);
+		} else {
+			msk = ADMV1014_IF_AMP_FINE_GAIN_Q_MSK;
+			data = FIELD_PREP(ADMV1014_IF_AMP_FINE_GAIN_Q_MSK, data);
+		}
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	ret = admv1014_spi_update_bits(st, addr, msk, data);
+
+	return ret ? ret : len;
+}
+
+static int admv1014_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long info)
+{
+	switch (info) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = detector_table;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(detector_table);
+
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int admv1014_reg_access(struct iio_dev *indio_dev,
+			       unsigned int reg,
+			       unsigned int write_val,
+			       unsigned int *read_val)
+{
+	struct admv1014_state *st = iio_priv(indio_dev);
+
+	if (read_val)
+		return admv1014_spi_read(st, reg, read_val);
+	else
+		return admv1014_spi_write(st, reg, write_val);
+}
+
+static const struct iio_info admv1014_info = {
+	.read_raw = admv1014_read_raw,
+	.write_raw = admv1014_write_raw,
+	.read_avail = &admv1014_read_avail,
+	.debugfs_reg_access = &admv1014_reg_access,
+};
+
+static const char * const admv1014_reg_name[] = {
+	 "vcm", "vcc-if-bb", "vcc-vga", "vcc-vva", "vcc-lna-3p3",
+	 "vcc-lna-1p5", "vcc-bg", "vcc-quad", "vcc-mixer"
+};
+
+static int admv1014_freq_change(struct notifier_block *nb, unsigned long action, void *data)
+{
+	struct admv1014_state *st = container_of(nb, struct admv1014_state, nb);
+	int ret;
+
+	if (action == POST_RATE_CHANGE) {
+		mutex_lock(&st->lock);
+		ret = notifier_from_errno(admv1014_update_quad_filters(st));
+		mutex_unlock(&st->lock);
+		return ret;
+	}
+
+	return NOTIFY_OK;
+}
+
+#define _ADMV1014_EXT_INFO(_name, _shared, _ident) { \
+		.name = _name, \
+		.read = admv1014_read, \
+		.write = admv1014_write, \
+		.private = _ident, \
+		.shared = _shared, \
+}
+
+static const struct iio_chan_spec_ext_info admv1014_ext_info[] = {
+	_ADMV1014_EXT_INFO("calibscale_coarse", IIO_SEPARATE, ADMV1014_CALIBSCALE_COARSE),
+	_ADMV1014_EXT_INFO("calibscale_fine", IIO_SEPARATE, ADMV1014_CALIBSCALE_FINE),
+	{ }
+};
+
+#define ADMV1014_CHAN_IQ(_channel, rf_comp) {				\
+	.type = IIO_ALTVOLTAGE,						\
+	.modified = 1,							\
+	.output = 0,							\
+	.indexed = 1,							\
+	.channel2 = IIO_MOD_##rf_comp,					\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_PHASE) |		\
+		BIT(IIO_CHAN_INFO_OFFSET),				\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBSCALE),	\
+	}
+
+#define ADMV1014_CHAN_IF(_channel, rf_comp) {				\
+	.type = IIO_ALTVOLTAGE,						\
+	.modified = 1,							\
+	.output = 0,							\
+	.indexed = 1,							\
+	.channel2 = IIO_MOD_##rf_comp,					\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_PHASE) |		\
+		BIT(IIO_CHAN_INFO_OFFSET),				\
+	}
+
+#define ADMV1014_CHAN_POWER(_channel) {					\
+	.type = IIO_POWER,						\
+	.output = 0,							\
+	.indexed = 1,							\
+	.channel = _channel,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_SCALE),			\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_SCALE),	\
+	}
+
+#define ADMV1014_CHAN_CALIBSCALE(_channel, rf_comp, _admv1014_ext_info) {	\
+	.type = IIO_ALTVOLTAGE,							\
+	.modified = 1,								\
+	.output = 0,								\
+	.indexed = 1,								\
+	.channel2 = IIO_MOD_##rf_comp,						\
+	.channel = _channel,							\
+	.ext_info = _admv1014_ext_info,						\
+	}
+
+static const struct iio_chan_spec admv1014_channels_iq[] = {
+	ADMV1014_CHAN_IQ(0, I),
+	ADMV1014_CHAN_IQ(0, Q),
+	ADMV1014_CHAN_POWER(0),
+};
+
+static const struct iio_chan_spec admv1014_channels_if[] = {
+	ADMV1014_CHAN_IF(0, I),
+	ADMV1014_CHAN_IF(0, Q),
+	ADMV1014_CHAN_CALIBSCALE(0, I, admv1014_ext_info),
+	ADMV1014_CHAN_CALIBSCALE(0, Q, admv1014_ext_info),
+	ADMV1014_CHAN_POWER(0),
+};
+
+static void admv1014_clk_disable(void *data)
+{
+	clk_disable_unprepare(data);
+}
+
+static void admv1014_reg_disable(void *data)
+{
+	regulator_bulk_disable(ADMV1014_NUM_REGULATORS, data);
+}
+
+static void admv1014_powerdown(void *data)
+{
+	unsigned int enable_reg, enable_reg_msk;
+
+	/* Disable all components in the Enable Register */
+	enable_reg_msk = ADMV1014_IBIAS_PD_MSK |
+			ADMV1014_IF_AMP_PD_MSK |
+			ADMV1014_QUAD_BG_PD_MSK |
+			ADMV1014_BB_AMP_PD_MSK |
+			ADMV1014_QUAD_IBIAS_PD_MSK |
+			ADMV1014_BG_PD_MSK;
+
+	enable_reg = FIELD_PREP(ADMV1014_IBIAS_PD_MSK, 1) |
+			FIELD_PREP(ADMV1014_IF_AMP_PD_MSK, 1) |
+			FIELD_PREP(ADMV1014_QUAD_BG_PD_MSK, 1) |
+			FIELD_PREP(ADMV1014_BB_AMP_PD_MSK, 1) |
+			FIELD_PREP(ADMV1014_QUAD_IBIAS_PD_MSK, 1) |
+			FIELD_PREP(ADMV1014_BG_PD_MSK, 1);
+
+	admv1014_spi_update_bits(data, ADMV1014_REG_ENABLE,
+				 enable_reg_msk, enable_reg);
+}
+
+static int admv1014_init(struct admv1014_state *st)
+{
+	unsigned int chip_id, enable_reg, enable_reg_msk;
+	struct spi_device *spi = st->spi;
+	int ret;
+
+	ret = regulator_bulk_enable(ADMV1014_NUM_REGULATORS, st->regulators);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to enable regulators");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&spi->dev, admv1014_reg_disable, st->regulators);
+	if (ret)
+		return ret;
+
+	ret = clk_prepare_enable(st->clkin);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, admv1014_clk_disable, st->clkin);
+	if (ret)
+		return ret;
+
+	st->nb.notifier_call = admv1014_freq_change;
+	ret = devm_clk_notifier_register(&spi->dev, st->clkin, &st->nb);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, admv1014_powerdown, st);
+	if (ret)
+		return ret;
+
+	/* Perform a software reset */
+	ret = __admv1014_spi_update_bits(st, ADMV1014_REG_SPI_CONTROL,
+					 ADMV1014_SPI_SOFT_RESET_MSK,
+					 FIELD_PREP(ADMV1014_SPI_SOFT_RESET_MSK, 1));
+	if (ret) {
+		dev_err(&spi->dev, "ADMV1014 SPI software reset failed.\n");
+		return ret;
+	}
+
+	ret = __admv1014_spi_update_bits(st, ADMV1014_REG_SPI_CONTROL,
+					 ADMV1014_SPI_SOFT_RESET_MSK,
+					 FIELD_PREP(ADMV1014_SPI_SOFT_RESET_MSK, 0));
+	if (ret) {
+		dev_err(&spi->dev, "ADMV1014 SPI software reset disable failed.\n");
+		return ret;
+	}
+
+	ret = __admv1014_spi_write(st, ADMV1014_REG_VVA_TEMP_COMP, 0x727C);
+	if (ret) {
+		dev_err(&spi->dev, "Writing default Temperature Compensation value failed.\n");
+		return ret;
+	}
+
+	ret = __admv1014_spi_read(st, ADMV1014_REG_SPI_CONTROL, &chip_id);
+	if (ret)
+		return ret;
+
+	chip_id = FIELD_GET(ADMV1014_CHIP_ID_MSK, chip_id);
+	if (chip_id != ADMV1014_CHIP_ID) {
+		dev_err(&spi->dev, "Invalid Chip ID.\n");
+		return -EINVAL;
+	}
+
+	ret = __admv1014_spi_update_bits(st, ADMV1014_REG_QUAD,
+					 ADMV1014_QUAD_SE_MODE_MSK,
+					 FIELD_PREP(ADMV1014_QUAD_SE_MODE_MSK,
+						    st->quad_se_mode));
+	if (ret) {
+		dev_err(&spi->dev, "Writing Quad SE Mode failed.\n");
+		return ret;
+	}
+
+	ret = admv1014_update_quad_filters(st);
+	if (ret) {
+		dev_err(&spi->dev, "Update Quad Filters failed.\n");
+		return ret;
+	}
+
+	ret = admv1014_update_vcm_settings(st);
+	if (ret) {
+		dev_err(&spi->dev, "Update VCM Settings failed.\n");
+		return ret;
+	}
+
+	enable_reg_msk = ADMV1014_P1DB_COMPENSATION_MSK |
+			 ADMV1014_IF_AMP_PD_MSK |
+			 ADMV1014_BB_AMP_PD_MSK |
+			 ADMV1014_DET_EN_MSK;
+
+	enable_reg = FIELD_PREP(ADMV1014_P1DB_COMPENSATION_MSK, st->p1db_comp ? 3 : 0) |
+		     FIELD_PREP(ADMV1014_IF_AMP_PD_MSK,
+				(st->input_mode == ADMV1014_IF_MODE) ? 0 : 1) |
+		     FIELD_PREP(ADMV1014_BB_AMP_PD_MSK,
+				(st->input_mode == ADMV1014_IF_MODE) ? 1 : 0) |
+		     FIELD_PREP(ADMV1014_DET_EN_MSK, st->det_en);
+
+	return __admv1014_spi_update_bits(st, ADMV1014_REG_ENABLE, enable_reg_msk, enable_reg);
+}
+
+static int admv1014_properties_parse(struct admv1014_state *st)
+{
+	const char *str;
+	unsigned int i;
+	struct spi_device *spi = st->spi;
+	int ret;
+
+	st->det_en = device_property_read_bool(&spi->dev, "adi,detector-enable");
+
+	st->p1db_comp = device_property_read_bool(&spi->dev, "adi,p1db-compensation-enable");
+
+	ret = device_property_read_string(&spi->dev, "adi,input-mode", &str);
+	if (ret) {
+		st->input_mode = ADMV1014_IQ_MODE;
+	} else {
+		ret = match_string(input_mode_names, ARRAY_SIZE(input_mode_names), str);
+		if (ret < 0)
+			return ret;
+
+		st->input_mode = ret;
+	}
+
+	ret = device_property_read_string(&spi->dev, "adi,quad-se-mode", &str);
+	if (ret) {
+		st->quad_se_mode = ADMV1014_SE_MODE_POS;
+	} else {
+		ret = match_string(quad_se_mode_names, ARRAY_SIZE(quad_se_mode_names), str);
+		if (ret < 0)
+			return ret;
+
+		st->quad_se_mode = ADMV1014_SE_MODE_POS + (ret * 3);
+	}
+
+	for (i = 0; i < ADMV1014_NUM_REGULATORS; ++i)
+		st->regulators[i].supply = admv1014_reg_name[i];
+
+	ret = devm_regulator_bulk_get(&st->spi->dev, ADMV1014_NUM_REGULATORS,
+				      st->regulators);
+	if (ret) {
+		dev_err(&spi->dev, "Failed to request regulators");
+		return ret;
+	}
+
+	st->clkin = devm_clk_get(&spi->dev, "lo_in");
+	if (IS_ERR(st->clkin))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
+				     "failed to get the LO input clock\n");
+
+	return 0;
+}
+
+static int admv1014_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct admv1014_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	ret = admv1014_properties_parse(st);
+	if (ret)
+		return ret;
+
+	indio_dev->info = &admv1014_info;
+	indio_dev->name = "admv1014";
+
+	if (st->input_mode == ADMV1014_IQ_MODE) {
+		indio_dev->channels = admv1014_channels_iq;
+		indio_dev->num_channels = ARRAY_SIZE(admv1014_channels_iq);
+	} else {
+		indio_dev->channels = admv1014_channels_if;
+		indio_dev->num_channels = ARRAY_SIZE(admv1014_channels_if);
+	}
+
+	st->spi = spi;
+
+	mutex_init(&st->lock);
+
+	ret = admv1014_init(st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id admv1014_id[] = {
+	{ "admv1014", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, admv1014_id);
+
+static const struct of_device_id admv1014_of_match[] = {
+	{ .compatible = "adi,admv1014" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, admv1014_of_match);
+
+static struct spi_driver admv1014_driver = {
+	.driver = {
+		.name = "admv1014",
+		.of_match_table = admv1014_of_match,
+	},
+	.probe = admv1014_probe,
+	.id_table = admv1014_id,
+};
+module_spi_driver(admv1014_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com");
+MODULE_DESCRIPTION("Analog Devices ADMV1014");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/frequency/admv4420.c b/drivers/iio/frequency/admv4420.c
new file mode 100644
index 000000000000..863ba8e98c95
--- /dev/null
+++ b/drivers/iio/frequency/admv4420.c
@@ -0,0 +1,398 @@
+// SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
+/*
+ * ADMV4420
+ *
+ * Copyright 2021 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+#include <linux/units.h>
+
+#include <asm/unaligned.h>
+
+/* ADMV4420 Register Map */
+#define ADMV4420_SPI_CONFIG_1			0x00
+#define ADMV4420_SPI_CONFIG_2			0x01
+#define ADMV4420_CHIPTYPE			0x03
+#define ADMV4420_PRODUCT_ID_L			0x04
+#define ADMV4420_PRODUCT_ID_H			0x05
+#define ADMV4420_SCRATCHPAD			0x0A
+#define ADMV4420_SPI_REV			0x0B
+#define ADMV4420_ENABLES			0x103
+#define ADMV4420_SDO_LEVEL			0x108
+#define ADMV4420_INT_L				0x200
+#define ADMV4420_INT_H				0x201
+#define ADMV4420_FRAC_L				0x202
+#define ADMV4420_FRAC_M				0x203
+#define ADMV4420_FRAC_H				0x204
+#define ADMV4420_MOD_L				0x208
+#define ADMV4420_MOD_M				0x209
+#define ADMV4420_MOD_H				0x20A
+#define ADMV4420_R_DIV_L			0x20C
+#define ADMV4420_R_DIV_H			0x20D
+#define ADMV4420_REFERENCE			0x20E
+#define ADMV4420_VCO_DATA_READBACK1		0x211
+#define ADMV4420_VCO_DATA_READBACK2		0x212
+#define ADMV4420_PLL_MUX_SEL			0x213
+#define ADMV4420_LOCK_DETECT			0x214
+#define ADMV4420_BAND_SELECT			0x215
+#define ADMV4420_VCO_ALC_TIMEOUT		0x216
+#define ADMV4420_VCO_MANUAL			0x217
+#define ADMV4420_ALC				0x219
+#define ADMV4420_VCO_TIMEOUT1			0x21C
+#define ADMV4420_VCO_TIMEOUT2			0x21D
+#define ADMV4420_VCO_BAND_DIV			0x21E
+#define ADMV4420_VCO_READBACK_SEL		0x21F
+#define ADMV4420_AUTOCAL			0x226
+#define ADMV4420_CP_STATE			0x22C
+#define ADMV4420_CP_BLEED_EN			0x22D
+#define ADMV4420_CP_CURRENT			0x22E
+#define ADMV4420_CP_BLEED			0x22F
+
+#define ADMV4420_SPI_CONFIG_1_SDOACTIVE		(BIT(4) | BIT(3))
+#define ADMV4420_SPI_CONFIG_1_ENDIAN		(BIT(5) | BIT(2))
+#define ADMV4420_SPI_CONFIG_1_SOFTRESET		(BIT(7) | BIT(1))
+
+#define ADMV4420_REFERENCE_DIVIDE_BY_2_MASK	BIT(0)
+#define ADMV4420_REFERENCE_MODE_MASK		BIT(1)
+#define ADMV4420_REFERENCE_DOUBLER_MASK		BIT(2)
+
+#define ADMV4420_REF_DIVIDER_MAX_VAL		GENMASK(9, 0)
+#define ADMV4420_N_COUNTER_INT_MAX		GENMASK(15, 0)
+#define ADMV4420_N_COUNTER_FRAC_MAX		GENMASK(23, 0)
+#define ADMV4420_N_COUNTER_MOD_MAX		GENMASK(23, 0)
+
+#define ENABLE_PLL				BIT(6)
+#define ENABLE_LO				BIT(5)
+#define ENABLE_VCO				BIT(3)
+#define ENABLE_IFAMP				BIT(2)
+#define ENABLE_MIXER				BIT(1)
+#define ENABLE_LNA				BIT(0)
+
+#define ADMV4420_SCRATCH_PAD_VAL_1              0xAD
+#define ADMV4420_SCRATCH_PAD_VAL_2              0xEA
+
+#define ADMV4420_REF_FREQ_HZ                    50000000
+#define MAX_N_COUNTER                           655360UL
+#define MAX_R_DIVIDER                           1024
+#define ADMV4420_DEFAULT_LO_FREQ_HZ		16750000000ULL
+
+enum admv4420_mux_sel {
+	ADMV4420_LOW = 0,
+	ADMV4420_LOCK_DTCT = 1,
+	ADMV4420_R_COUNTER_PER_2 = 4,
+	ADMV4420_N_CONUTER_PER_2 = 5,
+	ADMV4420_HIGH = 8,
+};
+
+struct admv4420_reference_block {
+	bool doubler_en;
+	bool divide_by_2_en;
+	bool ref_single_ended;
+	u32 divider;
+};
+
+struct admv4420_n_counter {
+	u32 int_val;
+	u32 frac_val;
+	u32 mod_val;
+	u32 n_counter;
+};
+
+struct admv4420_state {
+	struct spi_device		*spi;
+	struct regmap			*regmap;
+	u64				vco_freq_hz;
+	u64				lo_freq_hz;
+	struct admv4420_reference_block ref_block;
+	struct admv4420_n_counter	n_counter;
+	enum admv4420_mux_sel		mux_sel;
+	struct mutex			lock;
+	u8				transf_buf[4] __aligned(IIO_DMA_MINALIGN);
+};
+
+static const struct regmap_config admv4420_regmap_config = {
+	.reg_bits = 16,
+	.val_bits = 8,
+	.read_flag_mask = BIT(7),
+};
+
+static int admv4420_reg_access(struct iio_dev *indio_dev,
+			       u32 reg, u32 writeval,
+			       u32 *readval)
+{
+	struct admv4420_state *st = iio_priv(indio_dev);
+
+	if (readval)
+		return regmap_read(st->regmap, reg, readval);
+	else
+		return regmap_write(st->regmap, reg, writeval);
+}
+
+static int admv4420_set_n_counter(struct admv4420_state *st, u32 int_val,
+				  u32 frac_val, u32 mod_val)
+{
+	int ret;
+
+	put_unaligned_le32(frac_val, st->transf_buf);
+	ret = regmap_bulk_write(st->regmap, ADMV4420_FRAC_L, st->transf_buf, 3);
+	if (ret)
+		return ret;
+
+	put_unaligned_le32(mod_val, st->transf_buf);
+	ret = regmap_bulk_write(st->regmap, ADMV4420_MOD_L, st->transf_buf, 3);
+	if (ret)
+		return ret;
+
+	put_unaligned_le32(int_val, st->transf_buf);
+	return regmap_bulk_write(st->regmap, ADMV4420_INT_L, st->transf_buf, 2);
+}
+
+static int admv4420_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long info)
+{
+	struct admv4420_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_FREQUENCY:
+
+		*val = div_u64_rem(st->lo_freq_hz, MICRO, val2);
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info admv4420_info = {
+	.read_raw = admv4420_read_raw,
+	.debugfs_reg_access = &admv4420_reg_access,
+};
+
+static const struct iio_chan_spec admv4420_channels[] = {
+	{
+		.type = IIO_ALTVOLTAGE,
+		.output = 0,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_FREQUENCY),
+	},
+};
+
+static void admv4420_fw_parse(struct admv4420_state *st)
+{
+	struct device *dev = &st->spi->dev;
+	u32 tmp;
+	int ret;
+
+	ret = device_property_read_u32(dev, "adi,lo-freq-khz", &tmp);
+	if (!ret)
+		st->lo_freq_hz = (u64)tmp * KILO;
+
+	st->ref_block.ref_single_ended = device_property_read_bool(dev,
+								   "adi,ref-ext-single-ended-en");
+}
+
+static inline uint64_t admv4420_calc_pfd_vco(struct admv4420_state *st)
+{
+	return div_u64(st->vco_freq_hz * 10, st->n_counter.n_counter);
+}
+
+static inline uint32_t admv4420_calc_pfd_ref(struct admv4420_state *st)
+{
+	uint32_t tmp;
+	u8 doubler, divide_by_2;
+
+	doubler = st->ref_block.doubler_en ? 2 : 1;
+	divide_by_2 = st->ref_block.divide_by_2_en ? 2 : 1;
+	tmp = ADMV4420_REF_FREQ_HZ * doubler;
+
+	return (tmp / (st->ref_block.divider * divide_by_2));
+}
+
+static int admv4420_calc_parameters(struct admv4420_state *st)
+{
+	u64 pfd_ref, pfd_vco;
+	bool sol_found = false;
+
+	st->ref_block.doubler_en = false;
+	st->ref_block.divide_by_2_en = false;
+	st->vco_freq_hz = div_u64(st->lo_freq_hz, 2);
+
+	for (st->ref_block.divider = 1; st->ref_block.divider < MAX_R_DIVIDER;
+	    st->ref_block.divider++) {
+		pfd_ref = admv4420_calc_pfd_ref(st);
+		for (st->n_counter.n_counter = 1; st->n_counter.n_counter < MAX_N_COUNTER;
+		    st->n_counter.n_counter++) {
+			pfd_vco = admv4420_calc_pfd_vco(st);
+			if (pfd_ref == pfd_vco) {
+				sol_found = true;
+				break;
+			}
+		}
+
+		if (sol_found)
+			break;
+
+		st->n_counter.n_counter = 1;
+	}
+	if (!sol_found)
+		return -1;
+
+	st->n_counter.int_val = div_u64_rem(st->n_counter.n_counter, 10, &st->n_counter.frac_val);
+	st->n_counter.mod_val = 10;
+
+	return 0;
+}
+
+static int admv4420_setup(struct iio_dev *indio_dev)
+{
+	struct admv4420_state *st = iio_priv(indio_dev);
+	struct device *dev = indio_dev->dev.parent;
+	u32 val;
+	int ret;
+
+	ret = regmap_write(st->regmap, ADMV4420_SPI_CONFIG_1,
+			   ADMV4420_SPI_CONFIG_1_SOFTRESET);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap, ADMV4420_SPI_CONFIG_1,
+			   ADMV4420_SPI_CONFIG_1_SDOACTIVE |
+			   ADMV4420_SPI_CONFIG_1_ENDIAN);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap,
+			   ADMV4420_SCRATCHPAD,
+			   ADMV4420_SCRATCH_PAD_VAL_1);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(st->regmap, ADMV4420_SCRATCHPAD, &val);
+	if (ret)
+		return ret;
+
+	if (val != ADMV4420_SCRATCH_PAD_VAL_1) {
+		dev_err(dev, "Failed ADMV4420 to read/write scratchpad %x ", val);
+		return -EIO;
+	}
+
+	ret = regmap_write(st->regmap,
+			   ADMV4420_SCRATCHPAD,
+			   ADMV4420_SCRATCH_PAD_VAL_2);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(st->regmap, ADMV4420_SCRATCHPAD, &val);
+	if (ret)
+		return ret;
+
+	if (val != ADMV4420_SCRATCH_PAD_VAL_2) {
+		dev_err(dev, "Failed to read/write scratchpad %x ", val);
+		return -EIO;
+	}
+
+	st->mux_sel = ADMV4420_LOCK_DTCT;
+	st->lo_freq_hz = ADMV4420_DEFAULT_LO_FREQ_HZ;
+
+	admv4420_fw_parse(st);
+
+	ret = admv4420_calc_parameters(st);
+	if (ret) {
+		dev_err(dev, "Failed calc parameters for %lld ", st->vco_freq_hz);
+		return ret;
+	}
+
+	ret = regmap_write(st->regmap, ADMV4420_R_DIV_L,
+			   FIELD_GET(0xFF, st->ref_block.divider));
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap, ADMV4420_R_DIV_H,
+			   FIELD_GET(0xFF00, st->ref_block.divider));
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap, ADMV4420_REFERENCE,
+			   st->ref_block.divide_by_2_en |
+			   FIELD_PREP(ADMV4420_REFERENCE_MODE_MASK, st->ref_block.ref_single_ended) |
+			   FIELD_PREP(ADMV4420_REFERENCE_DOUBLER_MASK, st->ref_block.doubler_en));
+	if (ret)
+		return ret;
+
+	ret = admv4420_set_n_counter(st, st->n_counter.int_val,
+				     st->n_counter.frac_val,
+				     st->n_counter.mod_val);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(st->regmap, ADMV4420_PLL_MUX_SEL, st->mux_sel);
+	if (ret)
+		return ret;
+
+	return regmap_write(st->regmap, ADMV4420_ENABLES,
+			    ENABLE_PLL | ENABLE_LO | ENABLE_VCO |
+			    ENABLE_IFAMP | ENABLE_MIXER | ENABLE_LNA);
+}
+
+static int admv4420_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct admv4420_state *st;
+	struct regmap *regmap;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	regmap = devm_regmap_init_spi(spi, &admv4420_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(&spi->dev, PTR_ERR(regmap),
+				     "Failed to initializing spi regmap\n");
+
+	st = iio_priv(indio_dev);
+	st->spi = spi;
+	st->regmap = regmap;
+
+	indio_dev->name = "admv4420";
+	indio_dev->info = &admv4420_info;
+	indio_dev->channels = admv4420_channels;
+	indio_dev->num_channels = ARRAY_SIZE(admv4420_channels);
+
+	ret = admv4420_setup(indio_dev);
+	if (ret) {
+		dev_err(&spi->dev, "Setup ADMV4420 failed (%d)\n", ret);
+		return ret;
+	}
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id admv4420_of_match[] = {
+	{ .compatible = "adi,admv4420" },
+	{ }
+};
+
+MODULE_DEVICE_TABLE(of, admv4420_of_match);
+
+static struct spi_driver admv4420_driver = {
+	.driver = {
+		.name = "admv4420",
+		.of_match_table = admv4420_of_match,
+	},
+	.probe = admv4420_probe,
+};
+
+module_spi_driver(admv4420_driver);
+
+MODULE_AUTHOR("Cristian Pop <cristian.pop@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADMV44200 K Band Downconverter");
+MODULE_LICENSE("Dual BSD/GPL");
diff --git a/drivers/iio/frequency/adrf6780.c b/drivers/iio/frequency/adrf6780.c
new file mode 100644
index 000000000000..b4defb82f37e
--- /dev/null
+++ b/drivers/iio/frequency/adrf6780.c
@@ -0,0 +1,513 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * ADRF6780 driver
+ *
+ * Copyright 2021 Analog Devices Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/clk.h>
+#include <linux/clkdev.h>
+#include <linux/clk-provider.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spi/spi.h>
+
+#include <asm/unaligned.h>
+
+/* ADRF6780 Register Map */
+#define ADRF6780_REG_CONTROL			0x00
+#define ADRF6780_REG_ALARM_READBACK		0x01
+#define ADRF6780_REG_ALARM_MASKS		0x02
+#define ADRF6780_REG_ENABLE			0x03
+#define ADRF6780_REG_LINEARIZE			0x04
+#define ADRF6780_REG_LO_PATH			0x05
+#define ADRF6780_REG_ADC_CONTROL		0x06
+#define ADRF6780_REG_ADC_OUTPUT			0x0C
+
+/* ADRF6780_REG_CONTROL Map */
+#define ADRF6780_PARITY_EN_MSK			BIT(15)
+#define ADRF6780_SOFT_RESET_MSK			BIT(14)
+#define ADRF6780_CHIP_ID_MSK			GENMASK(11, 4)
+#define ADRF6780_CHIP_ID			0xA
+#define ADRF6780_CHIP_REVISION_MSK		GENMASK(3, 0)
+
+/* ADRF6780_REG_ALARM_READBACK Map */
+#define ADRF6780_PARITY_ERROR_MSK		BIT(15)
+#define ADRF6780_TOO_FEW_ERRORS_MSK		BIT(14)
+#define ADRF6780_TOO_MANY_ERRORS_MSK		BIT(13)
+#define ADRF6780_ADDRESS_RANGE_ERROR_MSK	BIT(12)
+
+/* ADRF6780_REG_ENABLE Map */
+#define ADRF6780_VGA_BUFFER_EN_MSK		BIT(8)
+#define ADRF6780_DETECTOR_EN_MSK		BIT(7)
+#define ADRF6780_LO_BUFFER_EN_MSK		BIT(6)
+#define ADRF6780_IF_MODE_EN_MSK			BIT(5)
+#define ADRF6780_IQ_MODE_EN_MSK			BIT(4)
+#define ADRF6780_LO_X2_EN_MSK			BIT(3)
+#define ADRF6780_LO_PPF_EN_MSK			BIT(2)
+#define ADRF6780_LO_EN_MSK			BIT(1)
+#define ADRF6780_UC_BIAS_EN_MSK			BIT(0)
+
+/* ADRF6780_REG_LINEARIZE Map */
+#define ADRF6780_RDAC_LINEARIZE_MSK		GENMASK(7, 0)
+
+/* ADRF6780_REG_LO_PATH Map */
+#define ADRF6780_LO_SIDEBAND_MSK		BIT(10)
+#define ADRF6780_Q_PATH_PHASE_ACCURACY_MSK	GENMASK(7, 4)
+#define ADRF6780_I_PATH_PHASE_ACCURACY_MSK	GENMASK(3, 0)
+
+/* ADRF6780_REG_ADC_CONTROL Map */
+#define ADRF6780_VDET_OUTPUT_SELECT_MSK		BIT(3)
+#define ADRF6780_ADC_START_MSK			BIT(2)
+#define ADRF6780_ADC_EN_MSK			BIT(1)
+#define ADRF6780_ADC_CLOCK_EN_MSK		BIT(0)
+
+/* ADRF6780_REG_ADC_OUTPUT Map */
+#define ADRF6780_ADC_STATUS_MSK			BIT(8)
+#define ADRF6780_ADC_VALUE_MSK			GENMASK(7, 0)
+
+struct adrf6780_state {
+	struct spi_device	*spi;
+	struct clk		*clkin;
+	/* Protect against concurrent accesses to the device */
+	struct mutex		lock;
+	bool			vga_buff_en;
+	bool			lo_buff_en;
+	bool			if_mode_en;
+	bool			iq_mode_en;
+	bool			lo_x2_en;
+	bool			lo_ppf_en;
+	bool			lo_en;
+	bool			uc_bias_en;
+	bool			lo_sideband;
+	bool			vdet_out_en;
+	u8			data[3] __aligned(IIO_DMA_MINALIGN);
+};
+
+static int __adrf6780_spi_read(struct adrf6780_state *st, unsigned int reg,
+			       unsigned int *val)
+{
+	int ret;
+	struct spi_transfer t = {0};
+
+	st->data[0] = 0x80 | (reg << 1);
+	st->data[1] = 0x0;
+	st->data[2] = 0x0;
+
+	t.rx_buf = &st->data[0];
+	t.tx_buf = &st->data[0];
+	t.len = 3;
+
+	ret = spi_sync_transfer(st->spi, &t, 1);
+	if (ret)
+		return ret;
+
+	*val = (get_unaligned_be24(&st->data[0]) >> 1) & GENMASK(15, 0);
+
+	return ret;
+}
+
+static int adrf6780_spi_read(struct adrf6780_state *st, unsigned int reg,
+			     unsigned int *val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __adrf6780_spi_read(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __adrf6780_spi_write(struct adrf6780_state *st,
+				unsigned int reg,
+				unsigned int val)
+{
+	put_unaligned_be24((val << 1) | (reg << 17), &st->data[0]);
+
+	return spi_write(st->spi, &st->data[0], 3);
+}
+
+static int adrf6780_spi_write(struct adrf6780_state *st, unsigned int reg,
+			      unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __adrf6780_spi_write(st, reg, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int __adrf6780_spi_update_bits(struct adrf6780_state *st,
+				      unsigned int reg, unsigned int mask,
+				      unsigned int val)
+{
+	int ret;
+	unsigned int data, temp;
+
+	ret = __adrf6780_spi_read(st, reg, &data);
+	if (ret)
+		return ret;
+
+	temp = (data & ~mask) | (val & mask);
+
+	return __adrf6780_spi_write(st, reg, temp);
+}
+
+static int adrf6780_spi_update_bits(struct adrf6780_state *st, unsigned int reg,
+				    unsigned int mask, unsigned int val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = __adrf6780_spi_update_bits(st, reg, mask, val);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int adrf6780_read_adc_raw(struct adrf6780_state *st, unsigned int *read_val)
+{
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_ADC_CONTROL,
+					 ADRF6780_ADC_EN_MSK |
+					 ADRF6780_ADC_CLOCK_EN_MSK |
+					 ADRF6780_ADC_START_MSK,
+					 FIELD_PREP(ADRF6780_ADC_EN_MSK, 1) |
+					 FIELD_PREP(ADRF6780_ADC_CLOCK_EN_MSK, 1) |
+					 FIELD_PREP(ADRF6780_ADC_START_MSK, 1));
+	if (ret)
+		goto exit;
+
+	/* Recommended delay for the ADC to be ready*/
+	usleep_range(200, 250);
+
+	ret = __adrf6780_spi_read(st, ADRF6780_REG_ADC_OUTPUT, read_val);
+	if (ret)
+		goto exit;
+
+	if (!(*read_val & ADRF6780_ADC_STATUS_MSK)) {
+		ret = -EINVAL;
+		goto exit;
+	}
+
+	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_ADC_CONTROL,
+					 ADRF6780_ADC_START_MSK,
+					 FIELD_PREP(ADRF6780_ADC_START_MSK, 0));
+	if (ret)
+		goto exit;
+
+	ret = __adrf6780_spi_read(st, ADRF6780_REG_ADC_OUTPUT, read_val);
+
+exit:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int adrf6780_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long info)
+{
+	struct adrf6780_state *dev = iio_priv(indio_dev);
+	unsigned int data;
+	int ret;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		ret = adrf6780_read_adc_raw(dev, &data);
+		if (ret)
+			return ret;
+
+		*val = data & ADRF6780_ADC_VALUE_MSK;
+
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		ret = adrf6780_spi_read(dev, ADRF6780_REG_LINEARIZE, &data);
+		if (ret)
+			return ret;
+
+		*val = data & ADRF6780_RDAC_LINEARIZE_MSK;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_PHASE:
+		ret = adrf6780_spi_read(dev, ADRF6780_REG_LO_PATH, &data);
+		if (ret)
+			return ret;
+
+		switch (chan->channel2) {
+		case IIO_MOD_I:
+			*val = data & ADRF6780_I_PATH_PHASE_ACCURACY_MSK;
+
+			return IIO_VAL_INT;
+		case IIO_MOD_Q:
+			*val = FIELD_GET(ADRF6780_Q_PATH_PHASE_ACCURACY_MSK,
+					 data);
+
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adrf6780_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long info)
+{
+	struct adrf6780_state *st = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_CHAN_INFO_SCALE:
+		return adrf6780_spi_write(st, ADRF6780_REG_LINEARIZE, val);
+	case IIO_CHAN_INFO_PHASE:
+		switch (chan->channel2) {
+		case IIO_MOD_I:
+			return adrf6780_spi_update_bits(st,
+				ADRF6780_REG_LO_PATH,
+				ADRF6780_I_PATH_PHASE_ACCURACY_MSK,
+				FIELD_PREP(ADRF6780_I_PATH_PHASE_ACCURACY_MSK, val));
+		case IIO_MOD_Q:
+			return adrf6780_spi_update_bits(st,
+				ADRF6780_REG_LO_PATH,
+				ADRF6780_Q_PATH_PHASE_ACCURACY_MSK,
+				FIELD_PREP(ADRF6780_Q_PATH_PHASE_ACCURACY_MSK, val));
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adrf6780_reg_access(struct iio_dev *indio_dev,
+			       unsigned int reg,
+			       unsigned int write_val,
+			       unsigned int *read_val)
+{
+	struct adrf6780_state *st = iio_priv(indio_dev);
+
+	if (read_val)
+		return adrf6780_spi_read(st, reg, read_val);
+	else
+		return adrf6780_spi_write(st, reg, write_val);
+}
+
+static const struct iio_info adrf6780_info = {
+	.read_raw = adrf6780_read_raw,
+	.write_raw = adrf6780_write_raw,
+	.debugfs_reg_access = &adrf6780_reg_access,
+};
+
+#define ADRF6780_CHAN_ADC(_channel) {			\
+	.type = IIO_ALTVOLTAGE,				\
+	.output = 0,					\
+	.indexed = 1,					\
+	.channel = _channel,				\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW)	\
+}
+
+#define ADRF6780_CHAN_RDAC(_channel) {			\
+	.type = IIO_ALTVOLTAGE,				\
+	.output = 1,					\
+	.indexed = 1,					\
+	.channel = _channel,				\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_SCALE)	\
+}
+
+#define ADRF6780_CHAN_IQ_PHASE(_channel, rf_comp) {		\
+	.type = IIO_ALTVOLTAGE,					\
+	.modified = 1,						\
+	.output = 1,						\
+	.indexed = 1,						\
+	.channel2 = IIO_MOD_##rf_comp,				\
+	.channel = _channel,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_PHASE)		\
+}
+
+static const struct iio_chan_spec adrf6780_channels[] = {
+	ADRF6780_CHAN_ADC(0),
+	ADRF6780_CHAN_RDAC(0),
+	ADRF6780_CHAN_IQ_PHASE(0, I),
+	ADRF6780_CHAN_IQ_PHASE(0, Q),
+};
+
+static int adrf6780_reset(struct adrf6780_state *st)
+{
+	int ret;
+	struct spi_device *spi = st->spi;
+
+	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_CONTROL,
+					 ADRF6780_SOFT_RESET_MSK,
+					 FIELD_PREP(ADRF6780_SOFT_RESET_MSK, 1));
+	if (ret) {
+		dev_err(&spi->dev, "ADRF6780 SPI software reset failed.\n");
+		return ret;
+	}
+
+	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_CONTROL,
+					 ADRF6780_SOFT_RESET_MSK,
+					 FIELD_PREP(ADRF6780_SOFT_RESET_MSK, 0));
+	if (ret) {
+		dev_err(&spi->dev, "ADRF6780 SPI software reset disable failed.\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int adrf6780_init(struct adrf6780_state *st)
+{
+	int ret;
+	unsigned int chip_id, enable_reg, enable_reg_msk;
+	struct spi_device *spi = st->spi;
+
+	/* Perform a software reset */
+	ret = adrf6780_reset(st);
+	if (ret)
+		return ret;
+
+	ret = __adrf6780_spi_read(st, ADRF6780_REG_CONTROL, &chip_id);
+	if (ret)
+		return ret;
+
+	chip_id = FIELD_GET(ADRF6780_CHIP_ID_MSK, chip_id);
+	if (chip_id != ADRF6780_CHIP_ID) {
+		dev_err(&spi->dev, "ADRF6780 Invalid Chip ID.\n");
+		return -EINVAL;
+	}
+
+	enable_reg_msk = ADRF6780_VGA_BUFFER_EN_MSK |
+			ADRF6780_DETECTOR_EN_MSK |
+			ADRF6780_LO_BUFFER_EN_MSK |
+			ADRF6780_IF_MODE_EN_MSK |
+			ADRF6780_IQ_MODE_EN_MSK |
+			ADRF6780_LO_X2_EN_MSK |
+			ADRF6780_LO_PPF_EN_MSK |
+			ADRF6780_LO_EN_MSK |
+			ADRF6780_UC_BIAS_EN_MSK;
+
+	enable_reg = FIELD_PREP(ADRF6780_VGA_BUFFER_EN_MSK, st->vga_buff_en) |
+			FIELD_PREP(ADRF6780_DETECTOR_EN_MSK, 1) |
+			FIELD_PREP(ADRF6780_LO_BUFFER_EN_MSK, st->lo_buff_en) |
+			FIELD_PREP(ADRF6780_IF_MODE_EN_MSK, st->if_mode_en) |
+			FIELD_PREP(ADRF6780_IQ_MODE_EN_MSK, st->iq_mode_en) |
+			FIELD_PREP(ADRF6780_LO_X2_EN_MSK, st->lo_x2_en) |
+			FIELD_PREP(ADRF6780_LO_PPF_EN_MSK, st->lo_ppf_en) |
+			FIELD_PREP(ADRF6780_LO_EN_MSK, st->lo_en) |
+			FIELD_PREP(ADRF6780_UC_BIAS_EN_MSK, st->uc_bias_en);
+
+	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_ENABLE,
+					 enable_reg_msk, enable_reg);
+	if (ret)
+		return ret;
+
+	ret = __adrf6780_spi_update_bits(st, ADRF6780_REG_LO_PATH,
+					 ADRF6780_LO_SIDEBAND_MSK,
+					 FIELD_PREP(ADRF6780_LO_SIDEBAND_MSK, st->lo_sideband));
+	if (ret)
+		return ret;
+
+	return __adrf6780_spi_update_bits(st, ADRF6780_REG_ADC_CONTROL,
+		ADRF6780_VDET_OUTPUT_SELECT_MSK,
+		FIELD_PREP(ADRF6780_VDET_OUTPUT_SELECT_MSK, st->vdet_out_en));
+}
+
+static void adrf6780_properties_parse(struct adrf6780_state *st)
+{
+	struct spi_device *spi = st->spi;
+
+	st->vga_buff_en = device_property_read_bool(&spi->dev, "adi,vga-buff-en");
+	st->lo_buff_en = device_property_read_bool(&spi->dev, "adi,lo-buff-en");
+	st->if_mode_en = device_property_read_bool(&spi->dev, "adi,if-mode-en");
+	st->iq_mode_en = device_property_read_bool(&spi->dev, "adi,iq-mode-en");
+	st->lo_x2_en = device_property_read_bool(&spi->dev, "adi,lo-x2-en");
+	st->lo_ppf_en = device_property_read_bool(&spi->dev, "adi,lo-ppf-en");
+	st->lo_en = device_property_read_bool(&spi->dev, "adi,lo-en");
+	st->uc_bias_en = device_property_read_bool(&spi->dev, "adi,uc-bias-en");
+	st->lo_sideband = device_property_read_bool(&spi->dev, "adi,lo-sideband");
+	st->vdet_out_en = device_property_read_bool(&spi->dev, "adi,vdet-out-en");
+}
+
+static void adrf6780_powerdown(void *data)
+{
+	/* Disable all components in the Enable Register */
+	adrf6780_spi_write(data, ADRF6780_REG_ENABLE, 0x0);
+}
+
+static int adrf6780_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct adrf6780_state *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	indio_dev->info = &adrf6780_info;
+	indio_dev->name = "adrf6780";
+	indio_dev->channels = adrf6780_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adrf6780_channels);
+
+	st->spi = spi;
+
+	adrf6780_properties_parse(st);
+
+	st->clkin = devm_clk_get_enabled(&spi->dev, "lo_in");
+	if (IS_ERR(st->clkin))
+		return dev_err_probe(&spi->dev, PTR_ERR(st->clkin),
+				     "failed to get the LO input clock\n");
+
+	mutex_init(&st->lock);
+
+	ret = adrf6780_init(st);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&spi->dev, adrf6780_powerdown, st);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id adrf6780_id[] = {
+	{ "adrf6780", 0 },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, adrf6780_id);
+
+static const struct of_device_id adrf6780_of_match[] = {
+	{ .compatible = "adi,adrf6780" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, adrf6780_of_match);
+
+static struct spi_driver adrf6780_driver = {
+	.driver = {
+		.name = "adrf6780",
+		.of_match_table = adrf6780_of_match,
+	},
+	.probe = adrf6780_probe,
+	.id_table = adrf6780_id,
+};
+module_spi_driver(adrf6780_driver);
+
+MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com");
+MODULE_DESCRIPTION("Analog Devices ADRF6780");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/gyro/Kconfig b/drivers/iio/gyro/Kconfig
index 7eaf77707b0b..97b86c4a53a6 100644
--- a/drivers/iio/gyro/Kconfig
+++ b/drivers/iio/gyro/Kconfig
@@ -41,6 +41,18 @@ config ADIS16260
 	  This driver can also be built as a module.  If so, the module
 	  will be called adis16260.
 
+config ADXRS290
+	tristate "Analog Devices ADXRS290 Dual-Axis MEMS Gyroscope SPI driver"
+	depends on SPI
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say yes here to build support for Analog Devices ADXRS290 programmable
+	  digital output gyroscope.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called adxrs290.
+
 config ADXRS450
 	tristate "Analog Devices ADXRS450/3 Digital Output Gyroscope SPI driver"
 	depends on SPI
@@ -61,7 +73,7 @@ config BMG160
 	help
 	  Say yes here to build support for BOSCH BMG160 Tri-axis Gyro Sensor
 	  driver connected via I2C or SPI. This driver also supports BMI055
-	  gyroscope.
+	  and BMI088 gyroscope.
 
 	  This driver can also be built as a module.  If so, the module
 	  will be called bmg160_i2c or bmg160_spi.
@@ -99,7 +111,6 @@ config FXAS21002C_SPI
 config HID_SENSOR_GYRO_3D
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Gyroscope 3D"
@@ -115,7 +126,6 @@ config MPU3050
 
 config MPU3050_I2C
 	tristate "Invensense MPU3050 devices on I2C"
-	depends on !(INPUT_MPU3050=y || INPUT_MPU3050=m)
 	depends on I2C
 	select MPU3050
 	select REGMAP_I2C
@@ -129,30 +139,37 @@ config IIO_ST_GYRO_3AXIS
 	tristate "STMicroelectronics gyroscopes 3-Axis Driver"
 	depends on (I2C || SPI_MASTER) && SYSFS
 	select IIO_ST_SENSORS_CORE
-	select IIO_ST_GYRO_I2C_3AXIS if (I2C)
-	select IIO_ST_GYRO_SPI_3AXIS if (SPI_MASTER)
 	select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
 	help
 	  Say yes here to build support for STMicroelectronics gyroscopes:
 	  L3G4200D, LSM330DL, L3GD20, LSM330DLC, L3G4IS, LSM330, LSM9DS0.
 
-	  This driver can also be built as a module. If so, these modules
-	  will be created:
-	  - st_gyro (core functions for the driver [it is mandatory]);
-	  - st_gyro_i2c (necessary for the I2C devices [optional*]);
-	  - st_gyro_spi (necessary for the SPI devices [optional*]);
-
-	  (*) one of these is necessary to do something.
+	  Also need to enable at least one of I2C and SPI interface drivers
+	  below.
 
 config IIO_ST_GYRO_I2C_3AXIS
-	tristate
-	depends on IIO_ST_GYRO_3AXIS
-	depends on IIO_ST_SENSORS_I2C
+	tristate "STMicroelectronics gyroscopes 3-Axis I2C Interface"
+	depends on I2C && IIO_ST_GYRO_3AXIS
+	default I2C && IIO_ST_GYRO_3AXIS
+	select IIO_ST_SENSORS_I2C
+	help
+	  Build support for STMicroelectronics gyroscopes I2C interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_gyro_i2c.
+
 
 config IIO_ST_GYRO_SPI_3AXIS
-	tristate
-	depends on IIO_ST_GYRO_3AXIS
-	depends on IIO_ST_SENSORS_SPI
+	tristate "STMicroelectronics gyroscopes 3-Axis SPI Interface"
+	depends on SPI_MASTER && IIO_ST_GYRO_3AXIS
+	default SPI_MASTER && IIO_ST_GYRO_3AXIS
+	select IIO_ST_SENSORS_SPI
+	help
+	  Build support for STMicroelectronics gyroscopes SPI interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_gyro_spi.
+
 
 config ITG3200
 	tristate "InvenSense ITG3200 Digital 3-Axis Gyroscope I2C driver"
diff --git a/drivers/iio/gyro/Makefile b/drivers/iio/gyro/Makefile
index 45cbd5dc644e..0319b397dc3f 100644
--- a/drivers/iio/gyro/Makefile
+++ b/drivers/iio/gyro/Makefile
@@ -8,6 +8,7 @@ obj-$(CONFIG_ADIS16080) += adis16080.o
 obj-$(CONFIG_ADIS16130) += adis16130.o
 obj-$(CONFIG_ADIS16136) += adis16136.o
 obj-$(CONFIG_ADIS16260) += adis16260.o
+obj-$(CONFIG_ADXRS290) += adxrs290.o
 obj-$(CONFIG_ADXRS450) += adxrs450.o
 obj-$(CONFIG_BMG160) += bmg160_core.o
 obj-$(CONFIG_BMG160_I2C) += bmg160_i2c.o
diff --git a/drivers/iio/gyro/adis16080.c b/drivers/iio/gyro/adis16080.c
index 1b84b8e112fe..14b3abf6dce9 100644
--- a/drivers/iio/gyro/adis16080.c
+++ b/drivers/iio/gyro/adis16080.c
@@ -38,14 +38,14 @@ struct adis16080_chip_info {
  * @us:			actual spi_device to write data
  * @info:		chip specific parameters
  * @buf:		transmit or receive buffer
- * @lock		lock to protect buffer during reads
+ * @lock:		lock to protect buffer during reads
  **/
 struct adis16080_state {
 	struct spi_device		*us;
 	const struct adis16080_chip_info *info;
 	struct mutex			lock;
 
-	__be16 buf ____cacheline_aligned;
+	__be16 buf __aligned(IIO_DMA_MINALIGN);
 };
 
 static int adis16080_read_sample(struct iio_dev *indio_dev,
@@ -195,8 +195,6 @@ static int adis16080_probe(struct spi_device *spi)
 	if (!indio_dev)
 		return -ENOMEM;
 	st = iio_priv(indio_dev);
-	/* this is only used for removal purposes */
-	spi_set_drvdata(spi, indio_dev);
 
 	mutex_init(&st->lock);
 
@@ -207,17 +205,10 @@ static int adis16080_probe(struct spi_device *spi)
 	indio_dev->name = spi->dev.driver->name;
 	indio_dev->channels = adis16080_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adis16080_channels);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16080_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	return iio_device_register(indio_dev);
-}
-
-static int adis16080_remove(struct spi_device *spi)
-{
-	iio_device_unregister(spi_get_drvdata(spi));
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id adis16080_ids[] = {
@@ -232,7 +223,6 @@ static struct spi_driver adis16080_driver = {
 		.name = "adis16080",
 	},
 	.probe = adis16080_probe,
-	.remove = adis16080_remove,
 	.id_table = adis16080_ids,
 };
 module_spi_driver(adis16080_driver);
diff --git a/drivers/iio/gyro/adis16130.c b/drivers/iio/gyro/adis16130.c
index 79e63c8a2ea8..33cde9e6fca5 100644
--- a/drivers/iio/gyro/adis16130.c
+++ b/drivers/iio/gyro/adis16130.c
@@ -12,6 +12,8 @@
 
 #include <linux/iio/iio.h>
 
+#include <asm/unaligned.h>
+
 #define ADIS16130_CON         0x0
 #define ADIS16130_CON_RD      (1 << 6)
 #define ADIS16130_IOP         0x1
@@ -39,7 +41,7 @@
 struct adis16130_state {
 	struct spi_device		*us;
 	struct mutex			buf_lock;
-	u8				buf[4] ____cacheline_aligned;
+	u8				buf[4] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int adis16130_spi_read(struct iio_dev *indio_dev, u8 reg_addr, u32 *val)
@@ -59,7 +61,7 @@ static int adis16130_spi_read(struct iio_dev *indio_dev, u8 reg_addr, u32 *val)
 
 	ret = spi_sync_transfer(st->us, &xfer, 1);
 	if (ret == 0)
-		*val = (st->buf[1] << 16) | (st->buf[2] << 8) | st->buf[3];
+		*val = get_unaligned_be24(&st->buf[1]);
 	mutex_unlock(&st->buf_lock);
 
 	return ret;
@@ -153,7 +155,6 @@ static int adis16130_probe(struct spi_device *spi)
 	indio_dev->name = spi->dev.driver->name;
 	indio_dev->channels = adis16130_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adis16130_channels);
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16130_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c
index d5e03a406d4a..71295709f2b9 100644
--- a/drivers/iio/gyro/adis16136.c
+++ b/drivers/iio/gyro/adis16136.c
@@ -6,19 +6,14 @@
  *   Author: Lars-Peter Clausen <lars@metafoo.de>
  */
 
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
-#include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/module.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
 #include <linux/iio/imu/adis.h>
 
 #include <linux/debugfs.h>
@@ -59,7 +54,7 @@
 struct adis16136_chip_info {
 	unsigned int precision;
 	unsigned int fullscale;
-	const struct adis_timeout *timeouts;
+	const struct adis_data adis_data;
 };
 
 struct adis16136 {
@@ -148,16 +143,14 @@ DEFINE_DEBUGFS_ATTRIBUTE(adis16136_flash_count_fops,
 static int adis16136_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16136 *adis16136 = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	debugfs_create_file_unsafe("serial_number", 0400,
-		indio_dev->debugfs_dentry, adis16136,
-		&adis16136_serial_fops);
+		d, adis16136, &adis16136_serial_fops);
 	debugfs_create_file_unsafe("product_id", 0400,
-		indio_dev->debugfs_dentry,
-		adis16136, &adis16136_product_id_fops);
+		d, adis16136, &adis16136_product_id_fops);
 	debugfs_create_file_unsafe("flash_count", 0400,
-		indio_dev->debugfs_dentry,
-		adis16136, &adis16136_flash_count_fops);
+		d, adis16136, &adis16136_flash_count_fops);
 
 	return 0;
 }
@@ -225,13 +218,12 @@ static ssize_t adis16136_read_frequency(struct device *dev,
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct adis16136 *adis16136 = iio_priv(indio_dev);
-	struct mutex *slock = &adis16136->adis.state_lock;
 	unsigned int freq;
 	int ret;
 
-	mutex_lock(slock);
+	adis_dev_lock(&adis16136->adis);
 	ret = __adis16136_get_freq(adis16136, &freq);
-	mutex_unlock(slock);
+	adis_dev_unlock(&adis16136->adis);
 	if (ret)
 		return ret;
 
@@ -256,11 +248,10 @@ static const unsigned adis16136_3db_divisors[] = {
 static int adis16136_set_filter(struct iio_dev *indio_dev, int val)
 {
 	struct adis16136 *adis16136 = iio_priv(indio_dev);
-	struct mutex *slock = &adis16136->adis.state_lock;
 	unsigned int freq;
 	int i, ret;
 
-	mutex_lock(slock);
+	adis_dev_lock(&adis16136->adis);
 	ret = __adis16136_get_freq(adis16136, &freq);
 	if (ret)
 		goto out_unlock;
@@ -272,7 +263,7 @@ static int adis16136_set_filter(struct iio_dev *indio_dev, int val)
 
 	ret = __adis_write_reg_16(&adis16136->adis, ADIS16136_REG_AVG_CNT, i);
 out_unlock:
-	mutex_unlock(slock);
+	adis_dev_unlock(&adis16136->adis);
 
 	return ret;
 }
@@ -280,12 +271,11 @@ out_unlock:
 static int adis16136_get_filter(struct iio_dev *indio_dev, int *val)
 {
 	struct adis16136 *adis16136 = iio_priv(indio_dev);
-	struct mutex *slock = &adis16136->adis.state_lock;
 	unsigned int freq;
 	uint16_t val16;
 	int ret;
 
-	mutex_lock(slock);
+	adis_dev_lock(&adis16136->adis);
 
 	ret = __adis_read_reg_16(&adis16136->adis, ADIS16136_REG_AVG_CNT,
 				 &val16);
@@ -299,7 +289,7 @@ static int adis16136_get_filter(struct iio_dev *indio_dev, int *val)
 	*val = freq / adis16136_3db_divisors[val16 & 0x07];
 
 err_unlock:
-	mutex_unlock(slock);
+	adis_dev_unlock(&adis16136->adis);
 
 	return ret ? ret : IIO_VAL_INT;
 }
@@ -466,22 +456,22 @@ static const char * const adis16136_status_error_msgs[] = {
 	[ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL] = "Flash checksum error",
 };
 
-static const struct adis_data adis16136_data = {
-	.diag_stat_reg = ADIS16136_REG_DIAG_STAT,
-	.glob_cmd_reg = ADIS16136_REG_GLOB_CMD,
-	.msc_ctrl_reg = ADIS16136_REG_MSC_CTRL,
-
-	.self_test_mask = ADIS16136_MSC_CTRL_SELF_TEST,
-
-	.read_delay = 10,
-	.write_delay = 10,
-
-	.status_error_msgs = adis16136_status_error_msgs,
-	.status_error_mask = BIT(ADIS16136_DIAG_STAT_FLASH_UPDATE_FAIL) |
-		BIT(ADIS16136_DIAG_STAT_SPI_FAIL) |
-		BIT(ADIS16136_DIAG_STAT_SELF_TEST_FAIL) |
-		BIT(ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL),
-};
+#define ADIS16136_DATA(_timeouts)					\
+{									\
+	.diag_stat_reg = ADIS16136_REG_DIAG_STAT,			\
+	.glob_cmd_reg = ADIS16136_REG_GLOB_CMD,				\
+	.msc_ctrl_reg = ADIS16136_REG_MSC_CTRL,				\
+	.self_test_reg = ADIS16136_REG_MSC_CTRL,			\
+	.self_test_mask = ADIS16136_MSC_CTRL_SELF_TEST,			\
+	.read_delay = 10,						\
+	.write_delay = 10,						\
+	.status_error_msgs = adis16136_status_error_msgs,		\
+	.status_error_mask = BIT(ADIS16136_DIAG_STAT_FLASH_UPDATE_FAIL) |	\
+		BIT(ADIS16136_DIAG_STAT_SPI_FAIL) |			\
+		BIT(ADIS16136_DIAG_STAT_SELF_TEST_FAIL) |		\
+		BIT(ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL),		\
+	.timeouts = (_timeouts),					\
+}
 
 enum adis16136_id {
 	ID_ADIS16133,
@@ -506,39 +496,28 @@ static const struct adis16136_chip_info adis16136_chip_info[] = {
 	[ID_ADIS16133] = {
 		.precision = IIO_DEGREE_TO_RAD(1200),
 		.fullscale = 24000,
-		.timeouts = &adis16133_timeouts,
+		.adis_data = ADIS16136_DATA(&adis16133_timeouts),
 	},
 	[ID_ADIS16135] = {
 		.precision = IIO_DEGREE_TO_RAD(300),
 		.fullscale = 24000,
-		.timeouts = &adis16133_timeouts,
+		.adis_data = ADIS16136_DATA(&adis16133_timeouts),
 	},
 	[ID_ADIS16136] = {
 		.precision = IIO_DEGREE_TO_RAD(450),
 		.fullscale = 24623,
-		.timeouts = &adis16136_timeouts,
+		.adis_data = ADIS16136_DATA(&adis16136_timeouts),
 	},
 	[ID_ADIS16137] = {
 		.precision = IIO_DEGREE_TO_RAD(1000),
 		.fullscale = 24609,
-		.timeouts = &adis16136_timeouts,
+		.adis_data = ADIS16136_DATA(&adis16136_timeouts),
 	},
 };
 
-static struct adis_data *adis16136_adis_data_alloc(struct adis16136 *st,
-						   struct device *dev)
+static void adis16136_stop(void *data)
 {
-	struct adis_data *data;
-
-	data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
-	if (!data)
-		return ERR_PTR(-ENOMEM);
-
-	memcpy(data, &adis16136_data, sizeof(*data));
-
-	data->timeouts = st->chip_info->timeouts;
-
-	return data;
+	adis16136_stop_device(data);
 }
 
 static int adis16136_probe(struct spi_device *spi)
@@ -558,53 +537,35 @@ static int adis16136_probe(struct spi_device *spi)
 	adis16136 = iio_priv(indio_dev);
 
 	adis16136->chip_info = &adis16136_chip_info[id->driver_data];
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->channels = adis16136_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adis16136_channels);
 	indio_dev->info = &adis16136_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	adis16136_data = adis16136_adis_data_alloc(adis16136, &spi->dev);
-	if (IS_ERR(adis16136_data))
-		return PTR_ERR(adis16136_data);
+	adis16136_data = &adis16136->chip_info->adis_data;
 
 	ret = adis_init(&adis16136->adis, indio_dev, spi, adis16136_data);
 	if (ret)
 		return ret;
 
-	ret = adis_setup_buffer_and_trigger(&adis16136->adis, indio_dev, NULL);
+	ret = devm_adis_setup_buffer_and_trigger(&adis16136->adis, indio_dev, NULL);
 	if (ret)
 		return ret;
 
 	ret = adis16136_initial_setup(indio_dev);
 	if (ret)
-		goto error_cleanup_buffer;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, adis16136_stop, indio_dev);
 	if (ret)
-		goto error_stop_device;
-
-	adis16136_debugfs_init(indio_dev);
-
-	return 0;
-
-error_stop_device:
-	adis16136_stop_device(indio_dev);
-error_cleanup_buffer:
-	adis_cleanup_buffer_and_trigger(&adis16136->adis, indio_dev);
-	return ret;
-}
-
-static int adis16136_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis16136 *adis16136 = iio_priv(indio_dev);
+		return ret;
 
-	iio_device_unregister(indio_dev);
-	adis16136_stop_device(indio_dev);
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
 
-	adis_cleanup_buffer_and_trigger(&adis16136->adis, indio_dev);
+	adis16136_debugfs_init(indio_dev);
 
 	return 0;
 }
@@ -624,10 +585,10 @@ static struct spi_driver adis16136_driver = {
 	},
 	.id_table = adis16136_ids,
 	.probe = adis16136_probe,
-	.remove = adis16136_remove,
 };
 module_spi_driver(adis16136_driver);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("Analog Devices ADIS16133/ADIS16135/ADIS16136 gyroscope driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c
index be09b3e5910c..eaf57bd339ed 100644
--- a/drivers/iio/gyro/adis16260.c
+++ b/drivers/iio/gyro/adis16260.c
@@ -5,17 +5,12 @@
  * Copyright 2010 Analog Devices Inc.
  */
 
-#include <linux/interrupt.h>
-#include <linux/mutex.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
-#include <linux/sysfs.h>
 #include <linux/module.h>
 
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
 #include <linux/iio/imu/adis.h>
 
 #define ADIS16260_STARTUP_DELAY	220 /* ms */
@@ -293,7 +288,7 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
 		addr = adis16260_addresses[chan->scan_index][1];
 		return adis_write_reg_16(adis, addr, val);
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		mutex_lock(&adis->state_lock);
+		adis_dev_lock(adis);
 		if (spi_get_device_id(adis->spi)->driver_data)
 			t = 256 / val;
 		else
@@ -310,7 +305,7 @@ static int adis16260_write_raw(struct iio_dev *indio_dev,
 			adis->spi->max_speed_hz = ADIS16260_SPI_FAST;
 		ret = __adis_write_reg_8(adis, ADIS16260_SMPL_PRD, t);
 
-		mutex_unlock(&adis->state_lock);
+		adis_dev_unlock(adis);
 		return ret;
 	}
 	return -EINVAL;
@@ -346,6 +341,7 @@ static const struct adis_data adis16260_data = {
 	.diag_stat_reg = ADIS16260_DIAG_STAT,
 
 	.self_test_mask = ADIS16260_MSC_CTRL_MEM_TEST,
+	.self_test_reg = ADIS16260_MSC_CTRL,
 	.timeouts = &adis16260_timeouts,
 
 	.status_error_msgs = adis1620_status_error_msgs,
@@ -358,6 +354,11 @@ static const struct adis_data adis16260_data = {
 		BIT(ADIS16260_DIAG_STAT_POWER_LOW_BIT),
 };
 
+static void adis16260_stop(void *data)
+{
+	adis16260_stop_device(data);
+}
+
 static int adis16260_probe(struct spi_device *spi)
 {
 	const struct spi_device_id *id;
@@ -380,7 +381,6 @@ static int adis16260_probe(struct spi_device *spi)
 	adis16260->info = &adis16260_chip_info_table[id->driver_data];
 
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16260_info;
 	indio_dev->channels = adis16260->info->channels;
 	indio_dev->num_channels = adis16260->info->num_channels;
@@ -390,35 +390,20 @@ static int adis16260_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = adis_setup_buffer_and_trigger(&adis16260->adis, indio_dev, NULL);
+	ret = devm_adis_setup_buffer_and_trigger(&adis16260->adis, indio_dev, NULL);
 	if (ret)
 		return ret;
 
 	/* Get the device into a sane initial state */
 	ret = adis_initial_startup(&adis16260->adis);
 	if (ret)
-		goto error_cleanup_buffer_trigger;
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_cleanup_buffer_trigger;
-
-	return 0;
-
-error_cleanup_buffer_trigger:
-	adis_cleanup_buffer_and_trigger(&adis16260->adis, indio_dev);
-	return ret;
-}
-
-static int adis16260_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis16260 *adis16260 = iio_priv(indio_dev);
+		return ret;
 
-	iio_device_unregister(indio_dev);
-	adis16260_stop_device(indio_dev);
-	adis_cleanup_buffer_and_trigger(&adis16260->adis, indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, adis16260_stop, indio_dev);
+	if (ret)
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 /*
@@ -441,7 +426,6 @@ static struct spi_driver adis16260_driver = {
 		.name = "adis16260",
 	},
 	.probe = adis16260_probe,
-	.remove = adis16260_remove,
 	.id_table = adis16260_id,
 };
 module_spi_driver(adis16260_driver);
@@ -449,3 +433,4 @@ module_spi_driver(adis16260_driver);
 MODULE_AUTHOR("Barry Song <21cnbao@gmail.com>");
 MODULE_DESCRIPTION("Analog Devices ADIS16260/5 Digital Gyroscope Sensor");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/gyro/adxrs290.c b/drivers/iio/gyro/adxrs290.c
new file mode 100644
index 000000000000..600e9725da78
--- /dev/null
+++ b/drivers/iio/gyro/adxrs290.c
@@ -0,0 +1,708 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * ADXRS290 SPI Gyroscope Driver
+ *
+ * Copyright (C) 2020 Nishant Malpani <nish.malpani25@gmail.com>
+ * Copyright (C) 2020 Analog Devices, Inc.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/spi/spi.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+
+#define ADXRS290_ADI_ID		0xAD
+#define ADXRS290_MEMS_ID	0x1D
+#define ADXRS290_DEV_ID		0x92
+
+#define ADXRS290_REG_ADI_ID	0x00
+#define ADXRS290_REG_MEMS_ID	0x01
+#define ADXRS290_REG_DEV_ID	0x02
+#define ADXRS290_REG_REV_ID	0x03
+#define ADXRS290_REG_SN0	0x04 /* Serial Number Registers, 4 bytes */
+#define ADXRS290_REG_DATAX0	0x08 /* Roll Rate o/p Data Regs, 2 bytes */
+#define ADXRS290_REG_DATAY0	0x0A /* Pitch Rate o/p Data Regs, 2 bytes */
+#define ADXRS290_REG_TEMP0	0x0C
+#define ADXRS290_REG_POWER_CTL	0x10
+#define ADXRS290_REG_FILTER	0x11
+#define ADXRS290_REG_DATA_RDY	0x12
+
+#define ADXRS290_READ		BIT(7)
+#define ADXRS290_TSM		BIT(0)
+#define ADXRS290_MEASUREMENT	BIT(1)
+#define ADXRS290_DATA_RDY_OUT	BIT(0)
+#define ADXRS290_SYNC_MASK	GENMASK(1, 0)
+#define ADXRS290_SYNC(x)	FIELD_PREP(ADXRS290_SYNC_MASK, x)
+#define ADXRS290_LPF_MASK	GENMASK(2, 0)
+#define ADXRS290_LPF(x)		FIELD_PREP(ADXRS290_LPF_MASK, x)
+#define ADXRS290_HPF_MASK	GENMASK(7, 4)
+#define ADXRS290_HPF(x)		FIELD_PREP(ADXRS290_HPF_MASK, x)
+
+#define ADXRS290_READ_REG(reg)	(ADXRS290_READ | (reg))
+
+#define ADXRS290_MAX_TRANSITION_TIME_MS 100
+
+enum adxrs290_mode {
+	ADXRS290_MODE_STANDBY,
+	ADXRS290_MODE_MEASUREMENT,
+};
+
+enum adxrs290_scan_index {
+	ADXRS290_IDX_X,
+	ADXRS290_IDX_Y,
+	ADXRS290_IDX_TEMP,
+	ADXRS290_IDX_TS,
+};
+
+struct adxrs290_state {
+	struct spi_device	*spi;
+	/* Serialize reads and their subsequent processing */
+	struct mutex		lock;
+	enum adxrs290_mode	mode;
+	unsigned int		lpf_3db_freq_idx;
+	unsigned int		hpf_3db_freq_idx;
+	struct iio_trigger      *dready_trig;
+	/* Ensure correct alignment of timestamp when present */
+	struct {
+		s16 channels[3];
+		s64 ts __aligned(8);
+	} buffer;
+};
+
+/*
+ * Available cut-off frequencies of the low pass filter in Hz.
+ * The integer part and fractional part are represented separately.
+ */
+static const int adxrs290_lpf_3db_freq_hz_table[][2] = {
+	[0] = {480, 0},
+	[1] = {320, 0},
+	[2] = {160, 0},
+	[3] = {80, 0},
+	[4] = {56, 600000},
+	[5] = {40, 0},
+	[6] = {28, 300000},
+	[7] = {20, 0},
+};
+
+/*
+ * Available cut-off frequencies of the high pass filter in Hz.
+ * The integer part and fractional part are represented separately.
+ */
+static const int adxrs290_hpf_3db_freq_hz_table[][2] = {
+	[0] = {0, 0},
+	[1] = {0, 11000},
+	[2] = {0, 22000},
+	[3] = {0, 44000},
+	[4] = {0, 87000},
+	[5] = {0, 175000},
+	[6] = {0, 350000},
+	[7] = {0, 700000},
+	[8] = {1, 400000},
+	[9] = {2, 800000},
+	[10] = {11, 300000},
+};
+
+static int adxrs290_get_rate_data(struct iio_dev *indio_dev, const u8 cmd, int *val)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int ret = 0;
+	int temp;
+
+	mutex_lock(&st->lock);
+	temp = spi_w8r16(st->spi, cmd);
+	if (temp < 0) {
+		ret = temp;
+		goto err_unlock;
+	}
+
+	*val = sign_extend32(temp, 15);
+
+err_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int adxrs290_get_temp_data(struct iio_dev *indio_dev, int *val)
+{
+	const u8 cmd = ADXRS290_READ_REG(ADXRS290_REG_TEMP0);
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int ret = 0;
+	int temp;
+
+	mutex_lock(&st->lock);
+	temp = spi_w8r16(st->spi, cmd);
+	if (temp < 0) {
+		ret = temp;
+		goto err_unlock;
+	}
+
+	/* extract lower 12 bits temperature reading */
+	*val = sign_extend32(temp, 11);
+
+err_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int adxrs290_get_3db_freq(struct iio_dev *indio_dev, u8 *val, u8 *val2)
+{
+	const u8 cmd = ADXRS290_READ_REG(ADXRS290_REG_FILTER);
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int ret = 0;
+	short temp;
+
+	mutex_lock(&st->lock);
+	temp = spi_w8r8(st->spi, cmd);
+	if (temp < 0) {
+		ret = temp;
+		goto err_unlock;
+	}
+
+	*val = FIELD_GET(ADXRS290_LPF_MASK, temp);
+	*val2 = FIELD_GET(ADXRS290_HPF_MASK, temp);
+
+err_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int adxrs290_spi_write_reg(struct spi_device *spi, const u8 reg,
+				  const u8 val)
+{
+	u8 buf[2];
+
+	buf[0] = reg;
+	buf[1] = val;
+
+	return spi_write_then_read(spi, buf, ARRAY_SIZE(buf), NULL, 0);
+}
+
+static int adxrs290_find_match(const int (*freq_tbl)[2], const int n,
+			       const int val, const int val2)
+{
+	int i;
+
+	for (i = 0; i < n; i++) {
+		if (freq_tbl[i][0] == val && freq_tbl[i][1] == val2)
+			return i;
+	}
+
+	return -EINVAL;
+}
+
+static int adxrs290_set_filter_freq(struct iio_dev *indio_dev,
+				    const unsigned int lpf_idx,
+				    const unsigned int hpf_idx)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	u8 val;
+
+	val = ADXRS290_HPF(hpf_idx) | ADXRS290_LPF(lpf_idx);
+
+	return adxrs290_spi_write_reg(st->spi, ADXRS290_REG_FILTER, val);
+}
+
+static int adxrs290_set_mode(struct iio_dev *indio_dev, enum adxrs290_mode mode)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int val, ret;
+
+	if (st->mode == mode)
+		return 0;
+
+	mutex_lock(&st->lock);
+
+	ret = spi_w8r8(st->spi, ADXRS290_READ_REG(ADXRS290_REG_POWER_CTL));
+	if (ret < 0)
+		goto out_unlock;
+
+	val = ret;
+
+	switch (mode) {
+	case ADXRS290_MODE_STANDBY:
+		val &= ~ADXRS290_MEASUREMENT;
+		break;
+	case ADXRS290_MODE_MEASUREMENT:
+		val |= ADXRS290_MEASUREMENT;
+		break;
+	default:
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	ret = adxrs290_spi_write_reg(st->spi, ADXRS290_REG_POWER_CTL, val);
+	if (ret < 0) {
+		dev_err(&st->spi->dev, "unable to set mode: %d\n", ret);
+		goto out_unlock;
+	}
+
+	/* update cached mode */
+	st->mode = mode;
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static void adxrs290_chip_off_action(void *data)
+{
+	struct iio_dev *indio_dev = data;
+
+	adxrs290_set_mode(indio_dev, ADXRS290_MODE_STANDBY);
+}
+
+static int adxrs290_initial_setup(struct iio_dev *indio_dev)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	struct spi_device *spi = st->spi;
+	int ret;
+
+	ret = adxrs290_spi_write_reg(spi, ADXRS290_REG_POWER_CTL,
+				     ADXRS290_MEASUREMENT | ADXRS290_TSM);
+	if (ret < 0)
+		return ret;
+
+	st->mode = ADXRS290_MODE_MEASUREMENT;
+
+	return devm_add_action_or_reset(&spi->dev, adxrs290_chip_off_action,
+					indio_dev);
+}
+
+static int adxrs290_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val,
+			     int *val2,
+			     long mask)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	unsigned int t;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			ret = adxrs290_get_rate_data(indio_dev,
+						     ADXRS290_READ_REG(chan->address),
+						     val);
+			if (ret < 0)
+				break;
+
+			ret = IIO_VAL_INT;
+			break;
+		case IIO_TEMP:
+			ret = adxrs290_get_temp_data(indio_dev, val);
+			if (ret < 0)
+				break;
+
+			ret = IIO_VAL_INT;
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			/* 1 LSB = 0.005 degrees/sec */
+			*val = 0;
+			*val2 = 87266;
+			return IIO_VAL_INT_PLUS_NANO;
+		case IIO_TEMP:
+			/* 1 LSB = 0.1 degrees Celsius */
+			*val = 100;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			t = st->lpf_3db_freq_idx;
+			*val = adxrs290_lpf_3db_freq_hz_table[t][0];
+			*val2 = adxrs290_lpf_3db_freq_hz_table[t][1];
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			t = st->hpf_3db_freq_idx;
+			*val = adxrs290_hpf_3db_freq_hz_table[t][0];
+			*val2 = adxrs290_hpf_3db_freq_hz_table[t][1];
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	return -EINVAL;
+}
+
+static int adxrs290_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val,
+			      int val2,
+			      long mask)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int ret, lpf_idx, hpf_idx;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		lpf_idx = adxrs290_find_match(adxrs290_lpf_3db_freq_hz_table,
+					      ARRAY_SIZE(adxrs290_lpf_3db_freq_hz_table),
+					      val, val2);
+		if (lpf_idx < 0) {
+			ret = -EINVAL;
+			break;
+		}
+
+		/* caching the updated state of the low-pass filter */
+		st->lpf_3db_freq_idx = lpf_idx;
+		/* retrieving the current state of the high-pass filter */
+		hpf_idx = st->hpf_3db_freq_idx;
+		ret = adxrs290_set_filter_freq(indio_dev, lpf_idx, hpf_idx);
+		break;
+
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		hpf_idx = adxrs290_find_match(adxrs290_hpf_3db_freq_hz_table,
+					      ARRAY_SIZE(adxrs290_hpf_3db_freq_hz_table),
+					      val, val2);
+		if (hpf_idx < 0) {
+			ret = -EINVAL;
+			break;
+		}
+
+		/* caching the updated state of the high-pass filter */
+		st->hpf_3db_freq_idx = hpf_idx;
+		/* retrieving the current state of the low-pass filter */
+		lpf_idx = st->lpf_3db_freq_idx;
+		ret = adxrs290_set_filter_freq(indio_dev, lpf_idx, hpf_idx);
+		break;
+
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	iio_device_release_direct_mode(indio_dev);
+	return ret;
+}
+
+static int adxrs290_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		*vals = (const int *)adxrs290_lpf_3db_freq_hz_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* Values are stored in a 2D matrix */
+		*length = ARRAY_SIZE(adxrs290_lpf_3db_freq_hz_table) * 2;
+
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY:
+		*vals = (const int *)adxrs290_hpf_3db_freq_hz_table;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* Values are stored in a 2D matrix */
+		*length = ARRAY_SIZE(adxrs290_hpf_3db_freq_hz_table) * 2;
+
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adxrs290_reg_access_rw(struct spi_device *spi, unsigned int reg,
+				  unsigned int *readval)
+{
+	int ret;
+
+	ret = spi_w8r8(spi, ADXRS290_READ_REG(reg));
+	if (ret < 0)
+		return ret;
+
+	*readval = ret;
+
+	return 0;
+}
+
+static int adxrs290_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+			       unsigned int writeval, unsigned int *readval)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+
+	if (readval)
+		return adxrs290_reg_access_rw(st->spi, reg, readval);
+	else
+		return adxrs290_spi_write_reg(st->spi, reg, writeval);
+}
+
+static int adxrs290_data_rdy_trigger_set_state(struct iio_trigger *trig,
+					       bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int ret;
+	u8 val;
+
+	val = state ? ADXRS290_SYNC(ADXRS290_DATA_RDY_OUT) : 0;
+
+	ret = adxrs290_spi_write_reg(st->spi, ADXRS290_REG_DATA_RDY, val);
+	if (ret < 0)
+		dev_err(&st->spi->dev, "failed to start data rdy interrupt\n");
+
+	return ret;
+}
+
+static void adxrs290_reset_trig(struct iio_trigger *trig)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	int val;
+
+	/*
+	 * Data ready interrupt is reset after a read of the data registers.
+	 * Here, we only read the 16b DATAY registers as that marks the end of
+	 * a read of the data registers and initiates a reset for the interrupt
+	 * line.
+	 */
+	adxrs290_get_rate_data(indio_dev,
+			       ADXRS290_READ_REG(ADXRS290_REG_DATAY0), &val);
+}
+
+static const struct iio_trigger_ops adxrs290_trigger_ops = {
+	.set_trigger_state = &adxrs290_data_rdy_trigger_set_state,
+	.validate_device = &iio_trigger_validate_own_device,
+	.reenable = &adxrs290_reset_trig,
+};
+
+static irqreturn_t adxrs290_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	u8 tx = ADXRS290_READ_REG(ADXRS290_REG_DATAX0);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	/* exercise a bulk data capture starting from reg DATAX0... */
+	ret = spi_write_then_read(st->spi, &tx, sizeof(tx), st->buffer.channels,
+				  sizeof(st->buffer.channels));
+	if (ret < 0)
+		goto out_unlock_notify;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &st->buffer,
+					   pf->timestamp);
+
+out_unlock_notify:
+	mutex_unlock(&st->lock);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+#define ADXRS290_ANGL_VEL_CHANNEL(reg, axis) {				\
+	.type = IIO_ANGL_VEL,						\
+	.address = reg,							\
+	.modified = 1,							\
+	.channel2 = IIO_MOD_##axis,					\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |		\
+	BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) |		\
+	BIT(IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY),		\
+	.info_mask_shared_by_type_available =				\
+	BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) |		\
+	BIT(IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY),		\
+	.scan_index = ADXRS290_IDX_##axis,				\
+	.scan_type = {                                                  \
+		.sign = 's',                                            \
+		.realbits = 16,                                         \
+		.storagebits = 16,                                      \
+		.endianness = IIO_LE,					\
+	},                                                              \
+}
+
+static const struct iio_chan_spec adxrs290_channels[] = {
+	ADXRS290_ANGL_VEL_CHANNEL(ADXRS290_REG_DATAX0, X),
+	ADXRS290_ANGL_VEL_CHANNEL(ADXRS290_REG_DATAY0, Y),
+	{
+		.type = IIO_TEMP,
+		.address = ADXRS290_REG_TEMP0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+		BIT(IIO_CHAN_INFO_SCALE),
+		.scan_index = ADXRS290_IDX_TEMP,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 12,
+			.storagebits = 16,
+			.endianness = IIO_LE,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(ADXRS290_IDX_TS),
+};
+
+static const unsigned long adxrs290_avail_scan_masks[] = {
+	BIT(ADXRS290_IDX_X) | BIT(ADXRS290_IDX_Y) | BIT(ADXRS290_IDX_TEMP),
+	0
+};
+
+static const struct iio_info adxrs290_info = {
+	.read_raw = &adxrs290_read_raw,
+	.write_raw = &adxrs290_write_raw,
+	.read_avail = &adxrs290_read_avail,
+	.debugfs_reg_access = &adxrs290_reg_access,
+};
+
+static int adxrs290_probe_trigger(struct iio_dev *indio_dev)
+{
+	struct adxrs290_state *st = iio_priv(indio_dev);
+	int ret;
+
+	if (!st->spi->irq) {
+		dev_info(&st->spi->dev, "no irq, using polling\n");
+		return 0;
+	}
+
+	st->dready_trig = devm_iio_trigger_alloc(&st->spi->dev, "%s-dev%d",
+						 indio_dev->name,
+						 iio_device_id(indio_dev));
+	if (!st->dready_trig)
+		return -ENOMEM;
+
+	st->dready_trig->ops = &adxrs290_trigger_ops;
+	iio_trigger_set_drvdata(st->dready_trig, indio_dev);
+
+	ret = devm_request_irq(&st->spi->dev, st->spi->irq,
+			       &iio_trigger_generic_data_rdy_poll,
+			       IRQF_ONESHOT, "adxrs290_irq", st->dready_trig);
+	if (ret < 0)
+		return dev_err_probe(&st->spi->dev, ret,
+				     "request irq %d failed\n", st->spi->irq);
+
+	ret = devm_iio_trigger_register(&st->spi->dev, st->dready_trig);
+	if (ret) {
+		dev_err(&st->spi->dev, "iio trigger register failed\n");
+		return ret;
+	}
+
+	indio_dev->trig = iio_trigger_get(st->dready_trig);
+
+	return 0;
+}
+
+static int adxrs290_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct adxrs290_state *st;
+	u8 val, val2;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	st->spi = spi;
+
+	indio_dev->name = "adxrs290";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adxrs290_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adxrs290_channels);
+	indio_dev->info = &adxrs290_info;
+	indio_dev->available_scan_masks = adxrs290_avail_scan_masks;
+
+	mutex_init(&st->lock);
+
+	val = spi_w8r8(spi, ADXRS290_READ_REG(ADXRS290_REG_ADI_ID));
+	if (val != ADXRS290_ADI_ID) {
+		dev_err(&spi->dev, "Wrong ADI ID 0x%02x\n", val);
+		return -ENODEV;
+	}
+
+	val = spi_w8r8(spi, ADXRS290_READ_REG(ADXRS290_REG_MEMS_ID));
+	if (val != ADXRS290_MEMS_ID) {
+		dev_err(&spi->dev, "Wrong MEMS ID 0x%02x\n", val);
+		return -ENODEV;
+	}
+
+	val = spi_w8r8(spi, ADXRS290_READ_REG(ADXRS290_REG_DEV_ID));
+	if (val != ADXRS290_DEV_ID) {
+		dev_err(&spi->dev, "Wrong DEV ID 0x%02x\n", val);
+		return -ENODEV;
+	}
+
+	/* default mode the gyroscope starts in */
+	st->mode = ADXRS290_MODE_STANDBY;
+
+	/* switch to measurement mode and switch on the temperature sensor */
+	ret = adxrs290_initial_setup(indio_dev);
+	if (ret < 0)
+		return ret;
+
+	/* max transition time to measurement mode */
+	msleep(ADXRS290_MAX_TRANSITION_TIME_MS);
+
+	ret = adxrs290_get_3db_freq(indio_dev, &val, &val2);
+	if (ret < 0)
+		return ret;
+
+	st->lpf_3db_freq_idx = val;
+	st->hpf_3db_freq_idx = val2;
+
+	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      &adxrs290_trigger_handler, NULL);
+	if (ret < 0)
+		return dev_err_probe(&spi->dev, ret,
+				     "iio triggered buffer setup failed\n");
+
+	ret = adxrs290_probe_trigger(indio_dev);
+	if (ret < 0)
+		return ret;
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct of_device_id adxrs290_of_match[] = {
+	{ .compatible = "adi,adxrs290" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, adxrs290_of_match);
+
+static struct spi_driver adxrs290_driver = {
+	.driver = {
+		.name = "adxrs290",
+		.of_match_table = adxrs290_of_match,
+	},
+	.probe = adxrs290_probe,
+};
+module_spi_driver(adxrs290_driver);
+
+MODULE_AUTHOR("Nishant Malpani <nish.malpani25@gmail.com>");
+MODULE_DESCRIPTION("Analog Devices ADXRS290 Gyroscope SPI driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/gyro/adxrs450.c b/drivers/iio/gyro/adxrs450.c
index b00c0eb44249..f84438e0c42c 100644
--- a/drivers/iio/gyro/adxrs450.c
+++ b/drivers/iio/gyro/adxrs450.c
@@ -73,7 +73,7 @@ enum {
 struct adxrs450_state {
 	struct spi_device	*us;
 	struct mutex		buf_lock;
-	__be32			tx ____cacheline_aligned;
+	__be32			tx __aligned(IIO_DMA_MINALIGN);
 	__be32			rx;
 
 };
@@ -424,7 +424,6 @@ static int adxrs450_probe(struct spi_device *spi)
 	/* This is only used for removal purposes */
 	spi_set_drvdata(spi, indio_dev);
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adxrs450_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels =
diff --git a/drivers/iio/gyro/bmg160_core.c b/drivers/iio/gyro/bmg160_core.c
index 428ddfc13acb..cedd9f02ea21 100644
--- a/drivers/iio/gyro/bmg160_core.c
+++ b/drivers/iio/gyro/bmg160_core.c
@@ -19,6 +19,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 #include "bmg160.h"
 
 #define BMG160_IRQ_NAME		"bmg160_event"
@@ -92,11 +93,16 @@
 
 struct bmg160_data {
 	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
 	struct iio_trigger *dready_trig;
 	struct iio_trigger *motion_trig;
 	struct iio_mount_matrix orientation;
 	struct mutex mutex;
-	s16 buffer[8];
+	/* Ensure naturally aligned timestamp */
+	struct {
+		s16 chans[3];
+		s64 timestamp __aligned(8);
+	} scan;
 	u32 dps_range;
 	int ev_enable_state;
 	int slope_thres;
@@ -760,7 +766,7 @@ static int bmg160_write_event_config(struct iio_dev *indio_dev,
 		return 0;
 	}
 	/*
-	 * We will expect the enable and disable to do operation in
+	 * We will expect the enable and disable to do operation
 	 * in reverse order. This will happen here anyway as our
 	 * resume operation uses sync mode runtime pm calls, the
 	 * suspend operation will be delayed by autosuspend delay
@@ -880,12 +886,12 @@ static irqreturn_t bmg160_trigger_handler(int irq, void *p)
 
 	mutex_lock(&data->mutex);
 	ret = regmap_bulk_read(data->regmap, BMG160_REG_XOUT_L,
-			       data->buffer, AXIS_MAX * 2);
+			       data->scan.chans, AXIS_MAX * 2);
 	mutex_unlock(&data->mutex);
 	if (ret < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -893,7 +899,7 @@ err:
 	return IRQ_HANDLED;
 }
 
-static int bmg160_trig_try_reen(struct iio_trigger *trig)
+static void bmg160_trig_reen(struct iio_trigger *trig)
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct bmg160_data *data = iio_priv(indio_dev);
@@ -902,18 +908,14 @@ static int bmg160_trig_try_reen(struct iio_trigger *trig)
 
 	/* new data interrupts don't need ack */
 	if (data->dready_trigger_on)
-		return 0;
+		return;
 
 	/* Set latched mode interrupt and clear any latched interrupt */
 	ret = regmap_write(data->regmap, BMG160_REG_INT_RST_LATCH,
 			   BMG160_INT_MODE_LATCH_INT |
 			   BMG160_INT_MODE_LATCH_RESET);
-	if (ret < 0) {
+	if (ret < 0)
 		dev_err(dev, "Error writing reg_rst_latch\n");
-		return ret;
-	}
-
-	return 0;
 }
 
 static int bmg160_data_rdy_trigger_set_state(struct iio_trigger *trig,
@@ -961,7 +963,7 @@ static int bmg160_data_rdy_trigger_set_state(struct iio_trigger *trig,
 
 static const struct iio_trigger_ops bmg160_trigger_ops = {
 	.set_trigger_state = bmg160_data_rdy_trigger_set_state,
-	.try_reenable = bmg160_trig_try_reen,
+	.reenable = bmg160_trig_reen,
 };
 
 static irqreturn_t bmg160_event_handler(int irq, void *private)
@@ -1051,8 +1053,6 @@ static int bmg160_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = {
 	.preenable = bmg160_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = bmg160_buffer_postdisable,
 };
 
@@ -1067,6 +1067,13 @@ static const char *bmg160_match_acpi_device(struct device *dev)
 	return dev_name(dev);
 }
 
+static void bmg160_disable_regulators(void *d)
+{
+	struct bmg160_data *data = d;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
+}
+
 int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 		      const char *name)
 {
@@ -1083,8 +1090,23 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	data->irq = irq;
 	data->regmap = regmap;
 
-	ret = iio_read_mount_matrix(dev, "mount-matrix",
-				&data->orientation);
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, bmg160_disable_regulators, data);
+	if (ret)
+		return ret;
+
+	ret = iio_read_mount_matrix(dev, &data->orientation);
 	if (ret)
 		return ret;
 
@@ -1097,7 +1119,6 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	if (ACPI_HANDLE(dev))
 		name = bmg160_match_acpi_device(dev);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = bmg160_channels;
 	indio_dev->num_channels = ARRAY_SIZE(bmg160_channels);
 	indio_dev->name = name;
@@ -1119,25 +1140,23 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 		data->dready_trig = devm_iio_trigger_alloc(dev,
 							   "%s-dev%d",
 							   indio_dev->name,
-							   indio_dev->id);
+							   iio_device_id(indio_dev));
 		if (!data->dready_trig)
 			return -ENOMEM;
 
 		data->motion_trig = devm_iio_trigger_alloc(dev,
 							  "%s-any-motion-dev%d",
 							  indio_dev->name,
-							  indio_dev->id);
+							  iio_device_id(indio_dev));
 		if (!data->motion_trig)
 			return -ENOMEM;
 
-		data->dready_trig->dev.parent = dev;
 		data->dready_trig->ops = &bmg160_trigger_ops;
 		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
 		ret = iio_trigger_register(data->dready_trig);
 		if (ret)
 			return ret;
 
-		data->motion_trig->dev.parent = dev;
 		data->motion_trig->ops = &bmg160_trigger_ops;
 		iio_trigger_set_drvdata(data->motion_trig, indio_dev);
 		ret = iio_trigger_register(data->motion_trig);
@@ -1169,11 +1188,14 @@ int bmg160_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(dev, "unable to register iio device\n");
-		goto err_buffer_cleanup;
+		goto err_pm_cleanup;
 	}
 
 	return 0;
 
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(dev);
+	pm_runtime_disable(dev);
 err_buffer_cleanup:
 	iio_triggered_buffer_cleanup(indio_dev);
 err_trigger_unregister:
diff --git a/drivers/iio/gyro/bmg160_i2c.c b/drivers/iio/gyro/bmg160_i2c.c
index 4fc9c6a3321f..908ccc385254 100644
--- a/drivers/iio/gyro/bmg160_i2c.c
+++ b/drivers/iio/gyro/bmg160_i2c.c
@@ -21,8 +21,8 @@ static int bmg160_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &bmg160_regmap_i2c_conf);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
@@ -32,16 +32,15 @@ static int bmg160_i2c_probe(struct i2c_client *client,
 	return bmg160_core_probe(&client->dev, regmap, client->irq, name);
 }
 
-static int bmg160_i2c_remove(struct i2c_client *client)
+static void bmg160_i2c_remove(struct i2c_client *client)
 {
 	bmg160_core_remove(&client->dev);
-
-	return 0;
 }
 
 static const struct acpi_device_id bmg160_acpi_match[] = {
 	{"BMG0160", 0},
 	{"BMI055B", 0},
+	{"BMI088B", 0},
 	{},
 };
 
@@ -50,6 +49,7 @@ MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);
 static const struct i2c_device_id bmg160_i2c_id[] = {
 	{"bmg160", 0},
 	{"bmi055_gyro", 0},
+	{"bmi088_gyro", 0},
 	{}
 };
 
diff --git a/drivers/iio/gyro/bmg160_spi.c b/drivers/iio/gyro/bmg160_spi.c
index 182a59c42507..fc2e453527b9 100644
--- a/drivers/iio/gyro/bmg160_spi.c
+++ b/drivers/iio/gyro/bmg160_spi.c
@@ -19,24 +19,23 @@ static int bmg160_spi_probe(struct spi_device *spi)
 
 	regmap = devm_regmap_init_spi(spi, &bmg160_regmap_spi_conf);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
 	return bmg160_core_probe(&spi->dev, regmap, spi->irq, id->name);
 }
 
-static int bmg160_spi_remove(struct spi_device *spi)
+static void bmg160_spi_remove(struct spi_device *spi)
 {
 	bmg160_core_remove(&spi->dev);
-
-	return 0;
 }
 
 static const struct spi_device_id bmg160_spi_id[] = {
 	{"bmg160", 0},
 	{"bmi055_gyro", 0},
+	{"bmi088_gyro", 0},
 	{}
 };
 
diff --git a/drivers/iio/gyro/fxas21002c.h b/drivers/iio/gyro/fxas21002c.h
index 566d92de2676..c81cecee121c 100644
--- a/drivers/iio/gyro/fxas21002c.h
+++ b/drivers/iio/gyro/fxas21002c.h
@@ -76,72 +76,6 @@ enum fxas21002c_fields {
 	F_MAX_FIELDS,
 };
 
-static const struct reg_field fxas21002c_reg_fields[] = {
-	[F_DR_STATUS]		= REG_FIELD(FXAS21002C_REG_STATUS, 0, 7),
-	[F_OUT_X_MSB]		= REG_FIELD(FXAS21002C_REG_OUT_X_MSB, 0, 7),
-	[F_OUT_X_LSB]		= REG_FIELD(FXAS21002C_REG_OUT_X_LSB, 0, 7),
-	[F_OUT_Y_MSB]		= REG_FIELD(FXAS21002C_REG_OUT_Y_MSB, 0, 7),
-	[F_OUT_Y_LSB]		= REG_FIELD(FXAS21002C_REG_OUT_Y_LSB, 0, 7),
-	[F_OUT_Z_MSB]		= REG_FIELD(FXAS21002C_REG_OUT_Z_MSB, 0, 7),
-	[F_OUT_Z_LSB]		= REG_FIELD(FXAS21002C_REG_OUT_Z_LSB, 0, 7),
-	[F_ZYX_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 7, 7),
-	[F_Z_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 6, 6),
-	[F_Y_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 5, 5),
-	[F_X_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 4, 4),
-	[F_ZYX_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 3, 3),
-	[F_Z_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 2, 2),
-	[F_Y_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 1, 1),
-	[F_X_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 0, 0),
-	[F_OVF]			= REG_FIELD(FXAS21002C_REG_F_STATUS, 7, 7),
-	[F_WMKF]		= REG_FIELD(FXAS21002C_REG_F_STATUS, 6, 6),
-	[F_CNT]			= REG_FIELD(FXAS21002C_REG_F_STATUS, 0, 5),
-	[F_MODE]		= REG_FIELD(FXAS21002C_REG_F_SETUP, 6, 7),
-	[F_WMRK]		= REG_FIELD(FXAS21002C_REG_F_SETUP, 0, 5),
-	[F_EVENT]		= REG_FIELD(FXAS21002C_REG_F_EVENT, 5, 5),
-	[FE_TIME]		= REG_FIELD(FXAS21002C_REG_F_EVENT, 0, 4),
-	[F_BOOTEND]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 3, 3),
-	[F_SRC_FIFO]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 2, 2),
-	[F_SRC_RT]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 1, 1),
-	[F_SRC_DRDY]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 0, 0),
-	[F_WHO_AM_I]		= REG_FIELD(FXAS21002C_REG_WHO_AM_I, 0, 7),
-	[F_BW]			= REG_FIELD(FXAS21002C_REG_CTRL0, 6, 7),
-	[F_SPIW]		= REG_FIELD(FXAS21002C_REG_CTRL0, 5, 5),
-	[F_SEL]			= REG_FIELD(FXAS21002C_REG_CTRL0, 3, 4),
-	[F_HPF_EN]		= REG_FIELD(FXAS21002C_REG_CTRL0, 2, 2),
-	[F_FS]			= REG_FIELD(FXAS21002C_REG_CTRL0, 0, 1),
-	[F_ELE]			= REG_FIELD(FXAS21002C_REG_RT_CFG, 3, 3),
-	[F_ZTEFE]		= REG_FIELD(FXAS21002C_REG_RT_CFG, 2, 2),
-	[F_YTEFE]		= REG_FIELD(FXAS21002C_REG_RT_CFG, 1, 1),
-	[F_XTEFE]		= REG_FIELD(FXAS21002C_REG_RT_CFG, 0, 0),
-	[F_EA]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 6, 6),
-	[F_ZRT]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 5, 5),
-	[F_ZRT_POL]		= REG_FIELD(FXAS21002C_REG_RT_SRC, 4, 4),
-	[F_YRT]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 3, 3),
-	[F_YRT_POL]		= REG_FIELD(FXAS21002C_REG_RT_SRC, 2, 2),
-	[F_XRT]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 1, 1),
-	[F_XRT_POL]		= REG_FIELD(FXAS21002C_REG_RT_SRC, 0, 0),
-	[F_DBCNTM]		= REG_FIELD(FXAS21002C_REG_RT_THS, 7, 7),
-	[F_THS]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 0, 6),
-	[F_RT_COUNT]		= REG_FIELD(FXAS21002C_REG_RT_COUNT, 0, 7),
-	[F_TEMP]		= REG_FIELD(FXAS21002C_REG_TEMP, 0, 7),
-	[F_RST]			= REG_FIELD(FXAS21002C_REG_CTRL1, 6, 6),
-	[F_ST]			= REG_FIELD(FXAS21002C_REG_CTRL1, 5, 5),
-	[F_DR]			= REG_FIELD(FXAS21002C_REG_CTRL1, 2, 4),
-	[F_ACTIVE]		= REG_FIELD(FXAS21002C_REG_CTRL1, 1, 1),
-	[F_READY]		= REG_FIELD(FXAS21002C_REG_CTRL1, 0, 0),
-	[F_INT_CFG_FIFO]	= REG_FIELD(FXAS21002C_REG_CTRL2, 7, 7),
-	[F_INT_EN_FIFO]		= REG_FIELD(FXAS21002C_REG_CTRL2, 6, 6),
-	[F_INT_CFG_RT]		= REG_FIELD(FXAS21002C_REG_CTRL2, 5, 5),
-	[F_INT_EN_RT]		= REG_FIELD(FXAS21002C_REG_CTRL2, 4, 4),
-	[F_INT_CFG_DRDY]	= REG_FIELD(FXAS21002C_REG_CTRL2, 3, 3),
-	[F_INT_EN_DRDY]		= REG_FIELD(FXAS21002C_REG_CTRL2, 2, 2),
-	[F_IPOL]		= REG_FIELD(FXAS21002C_REG_CTRL2, 1, 1),
-	[F_PP_OD]		= REG_FIELD(FXAS21002C_REG_CTRL2, 0, 0),
-	[F_WRAPTOONE]		= REG_FIELD(FXAS21002C_REG_CTRL3, 3, 3),
-	[F_EXTCTRLEN]		= REG_FIELD(FXAS21002C_REG_CTRL3, 2, 2),
-	[F_FS_DOUBLE]		= REG_FIELD(FXAS21002C_REG_CTRL3, 0, 0),
-};
-
 extern const struct dev_pm_ops fxas21002c_pm_ops;
 
 int fxas21002c_core_probe(struct device *dev, struct regmap *regmap, int irq,
diff --git a/drivers/iio/gyro/fxas21002c_core.c b/drivers/iio/gyro/fxas21002c_core.c
index 89d2bb2282ea..a36d71d9e3ea 100644
--- a/drivers/iio/gyro/fxas21002c_core.c
+++ b/drivers/iio/gyro/fxas21002c_core.c
@@ -7,9 +7,9 @@
 
 #include <linux/interrupt.h>
 #include <linux/module.h>
-#include <linux/of_irq.h>
 #include <linux/pm.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 
@@ -42,6 +42,72 @@ enum fxas21002c_mode_state {
 
 #define FXAS21002C_AXIS_TO_REG(axis) (FXAS21002C_REG_OUT_X_MSB + ((axis) * 2))
 
+static const struct reg_field fxas21002c_reg_fields[] = {
+	[F_DR_STATUS]		= REG_FIELD(FXAS21002C_REG_STATUS, 0, 7),
+	[F_OUT_X_MSB]		= REG_FIELD(FXAS21002C_REG_OUT_X_MSB, 0, 7),
+	[F_OUT_X_LSB]		= REG_FIELD(FXAS21002C_REG_OUT_X_LSB, 0, 7),
+	[F_OUT_Y_MSB]		= REG_FIELD(FXAS21002C_REG_OUT_Y_MSB, 0, 7),
+	[F_OUT_Y_LSB]		= REG_FIELD(FXAS21002C_REG_OUT_Y_LSB, 0, 7),
+	[F_OUT_Z_MSB]		= REG_FIELD(FXAS21002C_REG_OUT_Z_MSB, 0, 7),
+	[F_OUT_Z_LSB]		= REG_FIELD(FXAS21002C_REG_OUT_Z_LSB, 0, 7),
+	[F_ZYX_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 7, 7),
+	[F_Z_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 6, 6),
+	[F_Y_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 5, 5),
+	[F_X_OW]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 4, 4),
+	[F_ZYX_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 3, 3),
+	[F_Z_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 2, 2),
+	[F_Y_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 1, 1),
+	[F_X_DR]		= REG_FIELD(FXAS21002C_REG_DR_STATUS, 0, 0),
+	[F_OVF]			= REG_FIELD(FXAS21002C_REG_F_STATUS, 7, 7),
+	[F_WMKF]		= REG_FIELD(FXAS21002C_REG_F_STATUS, 6, 6),
+	[F_CNT]			= REG_FIELD(FXAS21002C_REG_F_STATUS, 0, 5),
+	[F_MODE]		= REG_FIELD(FXAS21002C_REG_F_SETUP, 6, 7),
+	[F_WMRK]		= REG_FIELD(FXAS21002C_REG_F_SETUP, 0, 5),
+	[F_EVENT]		= REG_FIELD(FXAS21002C_REG_F_EVENT, 5, 5),
+	[FE_TIME]		= REG_FIELD(FXAS21002C_REG_F_EVENT, 0, 4),
+	[F_BOOTEND]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 3, 3),
+	[F_SRC_FIFO]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 2, 2),
+	[F_SRC_RT]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 1, 1),
+	[F_SRC_DRDY]		= REG_FIELD(FXAS21002C_REG_INT_SRC_FLAG, 0, 0),
+	[F_WHO_AM_I]		= REG_FIELD(FXAS21002C_REG_WHO_AM_I, 0, 7),
+	[F_BW]			= REG_FIELD(FXAS21002C_REG_CTRL0, 6, 7),
+	[F_SPIW]		= REG_FIELD(FXAS21002C_REG_CTRL0, 5, 5),
+	[F_SEL]			= REG_FIELD(FXAS21002C_REG_CTRL0, 3, 4),
+	[F_HPF_EN]		= REG_FIELD(FXAS21002C_REG_CTRL0, 2, 2),
+	[F_FS]			= REG_FIELD(FXAS21002C_REG_CTRL0, 0, 1),
+	[F_ELE]			= REG_FIELD(FXAS21002C_REG_RT_CFG, 3, 3),
+	[F_ZTEFE]		= REG_FIELD(FXAS21002C_REG_RT_CFG, 2, 2),
+	[F_YTEFE]		= REG_FIELD(FXAS21002C_REG_RT_CFG, 1, 1),
+	[F_XTEFE]		= REG_FIELD(FXAS21002C_REG_RT_CFG, 0, 0),
+	[F_EA]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 6, 6),
+	[F_ZRT]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 5, 5),
+	[F_ZRT_POL]		= REG_FIELD(FXAS21002C_REG_RT_SRC, 4, 4),
+	[F_YRT]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 3, 3),
+	[F_YRT_POL]		= REG_FIELD(FXAS21002C_REG_RT_SRC, 2, 2),
+	[F_XRT]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 1, 1),
+	[F_XRT_POL]		= REG_FIELD(FXAS21002C_REG_RT_SRC, 0, 0),
+	[F_DBCNTM]		= REG_FIELD(FXAS21002C_REG_RT_THS, 7, 7),
+	[F_THS]			= REG_FIELD(FXAS21002C_REG_RT_SRC, 0, 6),
+	[F_RT_COUNT]		= REG_FIELD(FXAS21002C_REG_RT_COUNT, 0, 7),
+	[F_TEMP]		= REG_FIELD(FXAS21002C_REG_TEMP, 0, 7),
+	[F_RST]			= REG_FIELD(FXAS21002C_REG_CTRL1, 6, 6),
+	[F_ST]			= REG_FIELD(FXAS21002C_REG_CTRL1, 5, 5),
+	[F_DR]			= REG_FIELD(FXAS21002C_REG_CTRL1, 2, 4),
+	[F_ACTIVE]		= REG_FIELD(FXAS21002C_REG_CTRL1, 1, 1),
+	[F_READY]		= REG_FIELD(FXAS21002C_REG_CTRL1, 0, 0),
+	[F_INT_CFG_FIFO]	= REG_FIELD(FXAS21002C_REG_CTRL2, 7, 7),
+	[F_INT_EN_FIFO]		= REG_FIELD(FXAS21002C_REG_CTRL2, 6, 6),
+	[F_INT_CFG_RT]		= REG_FIELD(FXAS21002C_REG_CTRL2, 5, 5),
+	[F_INT_EN_RT]		= REG_FIELD(FXAS21002C_REG_CTRL2, 4, 4),
+	[F_INT_CFG_DRDY]	= REG_FIELD(FXAS21002C_REG_CTRL2, 3, 3),
+	[F_INT_EN_DRDY]		= REG_FIELD(FXAS21002C_REG_CTRL2, 2, 2),
+	[F_IPOL]		= REG_FIELD(FXAS21002C_REG_CTRL2, 1, 1),
+	[F_PP_OD]		= REG_FIELD(FXAS21002C_REG_CTRL2, 0, 0),
+	[F_WRAPTOONE]		= REG_FIELD(FXAS21002C_REG_CTRL3, 3, 3),
+	[F_EXTCTRLEN]		= REG_FIELD(FXAS21002C_REG_CTRL3, 2, 2),
+	[F_FS_DOUBLE]		= REG_FIELD(FXAS21002C_REG_CTRL3, 0, 0),
+};
+
 static const int fxas21002c_odr_values[] = {
 	800, 400, 200, 100, 50, 25, 12, 12
 };
@@ -84,10 +150,10 @@ struct fxas21002c_data {
 	struct regulator *vddio;
 
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
-	 * transfer buffers to live in their own cache lines.
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers live in their own cache lines.
 	 */
-	s16 buffer[8] ____cacheline_aligned;
+	s16 buffer[8] __aligned(IIO_DMA_MINALIGN);
 };
 
 enum fxas21002c_channel_index {
@@ -300,14 +366,7 @@ out_unlock:
 
 static int  fxas21002c_pm_get(struct fxas21002c_data *data)
 {
-	struct device *dev = regmap_get_device(data->regmap);
-	int ret;
-
-	ret = pm_runtime_get_sync(dev);
-	if (ret < 0)
-		pm_runtime_put_noidle(dev);
-
-	return ret;
+	return pm_runtime_resume_and_get(regmap_get_device(data->regmap));
 }
 
 static int  fxas21002c_pm_put(struct fxas21002c_data *data)
@@ -333,6 +392,7 @@ static int fxas21002c_temp_get(struct fxas21002c_data *data, int *val)
 	ret = regmap_field_read(data->regmap_fields[F_TEMP], &temp);
 	if (ret < 0) {
 		dev_err(dev, "failed to read temp: %d\n", ret);
+		fxas21002c_pm_put(data);
 		goto data_unlock;
 	}
 
@@ -366,6 +426,7 @@ static int fxas21002c_axis_get(struct fxas21002c_data *data,
 			       &axis_be, sizeof(axis_be));
 	if (ret < 0) {
 		dev_err(dev, "failed to read axis: %d: %d\n", index, ret);
+		fxas21002c_pm_put(data);
 		goto data_unlock;
 	}
 
@@ -761,7 +822,6 @@ static int fxas21002c_trigger_probe(struct fxas21002c_data *data)
 {
 	struct device *dev = regmap_get_device(data->regmap);
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct device_node *np = indio_dev->dev.of_node;
 	unsigned long irq_trig;
 	bool irq_open_drain;
 	int irq1;
@@ -770,8 +830,7 @@ static int fxas21002c_trigger_probe(struct fxas21002c_data *data)
 	if (!data->irq)
 		return 0;
 
-	irq1 = of_irq_get_byname(np, "INT1");
-
+	irq1 = fwnode_irq_get_byname(dev_fwnode(dev), "INT1");
 	if (irq1 == data->irq) {
 		dev_info(dev, "using interrupt line INT1\n");
 		ret = regmap_field_write(data->regmap_fields[F_INT_CFG_DRDY],
@@ -782,11 +841,11 @@ static int fxas21002c_trigger_probe(struct fxas21002c_data *data)
 
 	dev_info(dev, "using interrupt line INT2\n");
 
-	irq_open_drain = of_property_read_bool(np, "drive-open-drain");
+	irq_open_drain = device_property_read_bool(dev, "drive-open-drain");
 
 	data->dready_trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
 						   indio_dev->name,
-						   indio_dev->id);
+						   iio_device_id(indio_dev));
 	if (!data->dready_trig)
 		return -ENOMEM;
 
@@ -809,7 +868,6 @@ static int fxas21002c_trigger_probe(struct fxas21002c_data *data)
 	if (ret < 0)
 		return ret;
 
-	data->dready_trig->dev.parent = dev;
 	data->dready_trig->ops = &fxas21002c_trigger_ops;
 	iio_trigger_set_drvdata(data->dready_trig, indio_dev);
 
@@ -905,7 +963,6 @@ int fxas21002c_core_probe(struct device *dev, struct regmap *regmap, int irq,
 	if (ret < 0)
 		return ret;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = fxas21002c_channels;
 	indio_dev->num_channels = ARRAY_SIZE(fxas21002c_channels);
 	indio_dev->name = name;
@@ -938,7 +995,6 @@ int fxas21002c_core_probe(struct device *dev, struct regmap *regmap, int irq,
 pm_disable:
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
-	pm_runtime_put_noidle(dev);
 
 	return ret;
 }
@@ -952,7 +1008,6 @@ void fxas21002c_core_remove(struct device *dev)
 
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
-	pm_runtime_put_noidle(dev);
 }
 EXPORT_SYMBOL_GPL(fxas21002c_core_remove);
 
diff --git a/drivers/iio/gyro/fxas21002c_i2c.c b/drivers/iio/gyro/fxas21002c_i2c.c
index a7807fd97483..13bb52c594d1 100644
--- a/drivers/iio/gyro/fxas21002c_i2c.c
+++ b/drivers/iio/gyro/fxas21002c_i2c.c
@@ -33,11 +33,9 @@ static int fxas21002c_i2c_probe(struct i2c_client *i2c)
 	return fxas21002c_core_probe(&i2c->dev, regmap, i2c->irq, i2c->name);
 }
 
-static int fxas21002c_i2c_remove(struct i2c_client *i2c)
+static void fxas21002c_i2c_remove(struct i2c_client *i2c)
 {
 	fxas21002c_core_remove(&i2c->dev);
-
-	return 0;
 }
 
 static const struct i2c_device_id fxas21002c_i2c_id[] = {
diff --git a/drivers/iio/gyro/fxas21002c_spi.c b/drivers/iio/gyro/fxas21002c_spi.c
index 77ceebef4e34..c3ac169facf9 100644
--- a/drivers/iio/gyro/fxas21002c_spi.c
+++ b/drivers/iio/gyro/fxas21002c_spi.c
@@ -34,11 +34,9 @@ static int fxas21002c_spi_probe(struct spi_device *spi)
 	return fxas21002c_core_probe(&spi->dev, regmap, spi->irq, id->name);
 }
 
-static int fxas21002c_spi_remove(struct spi_device *spi)
+static void fxas21002c_spi_remove(struct spi_device *spi)
 {
 	fxas21002c_core_remove(&spi->dev);
-
-	return 0;
 }
 
 static const struct spi_device_id fxas21002c_spi_id[] = {
diff --git a/drivers/iio/gyro/hid-sensor-gyro-3d.c b/drivers/iio/gyro/hid-sensor-gyro-3d.c
index 08cacbbf31e6..8f0ad022c7f1 100644
--- a/drivers/iio/gyro/hid-sensor-gyro-3d.c
+++ b/drivers/iio/gyro/hid-sensor-gyro-3d.c
@@ -6,16 +6,11 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum gyro_3d_channel {
@@ -25,15 +20,20 @@ enum gyro_3d_channel {
 	GYRO_3D_CHANNEL_MAX,
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP GYRO_3D_CHANNEL_MAX
 struct gyro_3d_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info gyro[GYRO_3D_CHANNEL_MAX];
-	u32 gyro_val[GYRO_3D_CHANNEL_MAX];
+	struct {
+		u32 gyro_val[GYRO_3D_CHANNEL_MAX];
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
 };
 
 static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = {
@@ -42,6 +42,10 @@ static const u32 gyro_3d_addresses[GYRO_3D_CHANNEL_MAX] = {
 	HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS
 };
 
+static const u32 gryo_3d_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ANGL_VELOCITY,
+};
+
 /* Channel definitions */
 static const struct iio_chan_spec gyro_3d_channels[] = {
 	{
@@ -74,7 +78,8 @@ static const struct iio_chan_spec gyro_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -180,14 +185,6 @@ static const struct iio_info gyro_3d_info = {
 	.write_raw = &gyro_3d_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
-	int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -197,10 +194,15 @@ static int gyro_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct gyro_3d_state *gyro_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "gyro_3d_proc_event\n");
-	if (atomic_read(&gyro_state->common_attributes.data_ready))
-		hid_sensor_push_data(indio_dev,
-				gyro_state->gyro_val,
-				sizeof(gyro_state->gyro_val));
+	if (atomic_read(&gyro_state->common_attributes.data_ready)) {
+		if (!gyro_state->timestamp)
+			gyro_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &gyro_state->scan,
+						   gyro_state->timestamp);
+
+		gyro_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -221,10 +223,15 @@ static int gyro_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 	case HID_USAGE_SENSOR_ANGL_VELOCITY_Y_AXIS:
 	case HID_USAGE_SENSOR_ANGL_VELOCITY_Z_AXIS:
 		offset = usage_id - HID_USAGE_SENSOR_ANGL_VELOCITY_X_AXIS;
-		gyro_state->gyro_val[CHANNEL_SCAN_INDEX_X + offset] =
-						*(u32 *)raw_data;
+		gyro_state->scan.gyro_val[CHANNEL_SCAN_INDEX_X + offset] =
+				*(u32 *)raw_data;
 		ret = 0;
 	break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		gyro_state->timestamp =
+			hid_sensor_convert_timestamp(&gyro_state->common_attributes,
+						     *(s64 *)raw_data);
+	break;
 	default:
 		break;
 	}
@@ -265,17 +272,6 @@ static int gyro_3d_parse_report(struct platform_device *pdev,
 				&st->gyro[CHANNEL_SCAN_INDEX_X],
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ANGL_VELOCITY,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
 	return ret;
 }
 
@@ -299,14 +295,16 @@ static int hid_gyro_3d_probe(struct platform_device *pdev)
 
 	ret = hid_sensor_parse_common_attributes(hsdev,
 						HID_USAGE_SENSOR_GYRO_3D,
-						&gyro_state->common_attributes);
+						&gyro_state->common_attributes,
+						gryo_3d_sensitivity_addresses,
+						ARRAY_SIZE(gryo_3d_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
 
-	indio_dev->channels = kmemdup(gyro_3d_channels,
-				      sizeof(gyro_3d_channels), GFP_KERNEL);
+	indio_dev->channels = devm_kmemdup(&pdev->dev, gyro_3d_channels,
+					   sizeof(gyro_3d_channels), GFP_KERNEL);
 	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
 		return -ENOMEM;
@@ -317,27 +315,21 @@ static int hid_gyro_3d_probe(struct platform_device *pdev)
 				   HID_USAGE_SENSOR_GYRO_3D, gyro_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
-		goto error_free_dev_mem;
+		return ret;
 	}
 
 	indio_dev->num_channels = ARRAY_SIZE(gyro_3d_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &gyro_3d_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&gyro_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&gyro_state->common_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -361,11 +353,7 @@ static int hid_gyro_3d_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&gyro_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes);
 	return ret;
 }
 
@@ -378,9 +366,7 @@ static int hid_gyro_3d_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_GYRO_3D);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&gyro_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &gyro_state->common_attributes);
 
 	return 0;
 }
@@ -408,3 +394,4 @@ module_platform_driver(hid_gyro_3d_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Gyroscope 3D");
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/gyro/itg3200_buffer.c b/drivers/iio/gyro/itg3200_buffer.c
index d3fbe9d86467..4cfa0d439560 100644
--- a/drivers/iio/gyro/itg3200_buffer.c
+++ b/drivers/iio/gyro/itg3200_buffer.c
@@ -46,17 +46,24 @@ static irqreturn_t itg3200_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct itg3200 *st = iio_priv(indio_dev);
-	__be16 buf[ITG3200_SCAN_ELEMENTS + sizeof(s64)/sizeof(u16)];
-
-	int ret = itg3200_read_all_channels(st->i2c, buf);
+	/*
+	 * Ensure correct alignment and padding including for the
+	 * timestamp that may be inserted.
+	 */
+	struct {
+		__be16 buf[ITG3200_SCAN_ELEMENTS];
+		s64 ts __aligned(8);
+	} scan;
+
+	int ret = itg3200_read_all_channels(st->i2c, scan.buf);
 	if (ret < 0)
 		goto error_ret;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan, pf->timestamp);
 
+error_ret:
 	iio_trigger_notify_done(indio_dev->trig);
 
-error_ret:
 	return IRQ_HANDLED;
 }
 
@@ -106,8 +113,8 @@ int itg3200_probe_trigger(struct iio_dev *indio_dev)
 	int ret;
 	struct itg3200 *st = iio_priv(indio_dev);
 
-	st->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
-				     indio_dev->id);
+	st->trig = iio_trigger_alloc(&st->i2c->dev, "%s-dev%d", indio_dev->name,
+				     iio_device_id(indio_dev));
 	if (!st->trig)
 		return -ENOMEM;
 
@@ -120,7 +127,6 @@ int itg3200_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_trig;
 
 
-	st->trig->dev.parent = &st->i2c->dev;
 	st->trig->ops = &itg3200_trigger_ops;
 	iio_trigger_set_drvdata(st->trig, indio_dev);
 	ret = iio_trigger_register(st->trig);
diff --git a/drivers/iio/gyro/itg3200_core.c b/drivers/iio/gyro/itg3200_core.c
index b3afa556f973..421501584587 100644
--- a/drivers/iio/gyro/itg3200_core.c
+++ b/drivers/iio/gyro/itg3200_core.c
@@ -308,15 +308,13 @@ static int itg3200_probe(struct i2c_client *client,
 
 	st = iio_priv(indio_dev);
 
-	ret = iio_read_mount_matrix(&client->dev, "mount-matrix",
-				&st->orientation);
+	ret = iio_read_mount_matrix(&client->dev, &st->orientation);
 	if (ret)
 		return ret;
 
 	i2c_set_clientdata(client, indio_dev);
 	st->i2c = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = client->dev.driver->name;
 	indio_dev->channels = itg3200_channels;
 	indio_dev->num_channels = ARRAY_SIZE(itg3200_channels);
@@ -352,7 +350,7 @@ error_unconfigure_buffer:
 	return ret;
 }
 
-static int itg3200_remove(struct i2c_client *client)
+static void itg3200_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
@@ -362,11 +360,9 @@ static int itg3200_remove(struct i2c_client *client)
 		itg3200_remove_trigger(indio_dev);
 
 	itg3200_buffer_unconfigure(indio_dev);
-
-	return 0;
 }
 
-static int __maybe_unused itg3200_suspend(struct device *dev)
+static int itg3200_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct itg3200 *st = iio_priv(indio_dev);
@@ -377,14 +373,15 @@ static int __maybe_unused itg3200_suspend(struct device *dev)
 				   ITG3200_SLEEP);
 }
 
-static int __maybe_unused itg3200_resume(struct device *dev)
+static int itg3200_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 
 	return itg3200_initial_setup(indio_dev);
 }
 
-static SIMPLE_DEV_PM_OPS(itg3200_pm_ops, itg3200_suspend, itg3200_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(itg3200_pm_ops, itg3200_suspend,
+				itg3200_resume);
 
 static const struct i2c_device_id itg3200_id[] = {
 	{ "itg3200", 0 },
@@ -402,7 +399,7 @@ static struct i2c_driver itg3200_driver = {
 	.driver = {
 		.name	= "itg3200",
 		.of_match_table = itg3200_of_match,
-		.pm	= &itg3200_pm_ops,
+		.pm	= pm_sleep_ptr(&itg3200_pm_ops),
 	},
 	.id_table	= itg3200_id,
 	.probe		= itg3200_probe,
diff --git a/drivers/iio/gyro/mpu3050-core.c b/drivers/iio/gyro/mpu3050-core.c
index 8e908a749f95..6a6d84a3deda 100644
--- a/drivers/iio/gyro/mpu3050-core.c
+++ b/drivers/iio/gyro/mpu3050-core.c
@@ -13,6 +13,7 @@
  * TODO: add support for setting up the low pass 3dB frequency.
  */
 
+#include <linux/bitfield.h>
 #include <linux/bitops.h>
 #include <linux/delay.h>
 #include <linux/err.h>
@@ -25,6 +26,7 @@
 #include <linux/interrupt.h>
 #include <linux/module.h>
 #include <linux/pm_runtime.h>
+#include <linux/property.h>
 #include <linux/random.h>
 #include <linux/slab.h>
 
@@ -271,7 +273,16 @@ static int mpu3050_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_OFFSET:
 		switch (chan->type) {
 		case IIO_TEMP:
-			/* The temperature scaling is (x+23000)/280 Celsius */
+			/*
+			 * The temperature scaling is (x+23000)/280 Celsius
+			 * for the "best fit straight line" temperature range
+			 * of -30C..85C.  The 23000 includes room temperature
+			 * offset of +35C, 280 is the precision scale and x is
+			 * the 16-bit signed integer reported by hardware.
+			 *
+			 * Temperature value itself represents temperature of
+			 * the sensor die.
+			 */
 			*val = 23000;
 			return IIO_VAL_INT;
 		default:
@@ -328,7 +339,7 @@ static int mpu3050_read_raw(struct iio_dev *indio_dev,
 				goto out_read_raw_unlock;
 			}
 
-			*val = be16_to_cpu(raw_val);
+			*val = (s16)be16_to_cpu(raw_val);
 			ret = IIO_VAL_INT;
 
 			goto out_read_raw_unlock;
@@ -461,13 +472,10 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct mpu3050 *mpu3050 = iio_priv(indio_dev);
 	int ret;
-	/*
-	 * Temperature 1*16 bits
-	 * Three axes 3*16 bits
-	 * Timestamp 64 bits (4*16 bits)
-	 * Sum total 8*16 bits
-	 */
-	__be16 hw_values[8];
+	struct {
+		__be16 chans[4];
+		s64 timestamp __aligned(8);
+	} scan;
 	s64 timestamp;
 	unsigned int datums_from_fifo = 0;
 
@@ -550,6 +558,8 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p)
 					       MPU3050_FIFO_R,
 					       &fifo_values[offset],
 					       toread);
+			if (ret)
+				goto out_trigger_unlock;
 
 			dev_dbg(mpu3050->dev,
 				"%04x %04x %04x %04x %04x\n",
@@ -560,9 +570,10 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p)
 				fifo_values[4]);
 
 			/* Index past the footer (fifo_values[0]) and push */
-			iio_push_to_buffers_with_timestamp(indio_dev,
-							   &fifo_values[1],
-							   timestamp);
+			iio_push_to_buffers_with_ts_unaligned(indio_dev,
+							      &fifo_values[1],
+							      sizeof(__be16) * 4,
+							      timestamp);
 
 			fifocnt -= toread;
 			datums_from_fifo++;
@@ -620,15 +631,15 @@ static irqreturn_t mpu3050_trigger_handler(int irq, void *p)
 		goto out_trigger_unlock;
 	}
 
-	ret = regmap_bulk_read(mpu3050->map, MPU3050_TEMP_H, &hw_values,
-			       sizeof(hw_values));
+	ret = regmap_bulk_read(mpu3050->map, MPU3050_TEMP_H, scan.chans,
+			       sizeof(scan.chans));
 	if (ret) {
 		dev_err(mpu3050->dev,
 			"error reading axis data\n");
 		goto out_trigger_unlock;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, hw_values, timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan, timestamp);
 
 out_trigger_unlock:
 	mutex_unlock(&mpu3050->lock);
@@ -662,8 +673,6 @@ static int mpu3050_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops mpu3050_buffer_setup_ops = {
 	.preenable = mpu3050_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = mpu3050_buffer_postdisable,
 };
 
@@ -786,7 +795,8 @@ static int mpu3050_read_mem(struct mpu3050 *mpu3050,
 static int mpu3050_hw_init(struct mpu3050 *mpu3050)
 {
 	int ret;
-	u8 otp[8];
+	__le64 otp_le;
+	u64 otp;
 
 	/* Reset */
 	ret = regmap_update_bits(mpu3050->map,
@@ -817,29 +827,31 @@ static int mpu3050_hw_init(struct mpu3050 *mpu3050)
 				MPU3050_MEM_USER_BANK |
 				MPU3050_MEM_OTP_BANK_0),
 			       0,
-			       sizeof(otp),
-			       otp);
+			       sizeof(otp_le),
+			       (u8 *)&otp_le);
 	if (ret)
 		return ret;
 
 	/* This is device-unique data so it goes into the entropy pool */
-	add_device_randomness(otp, sizeof(otp));
+	add_device_randomness(&otp_le, sizeof(otp_le));
+
+	otp = le64_to_cpu(otp_le);
 
 	dev_info(mpu3050->dev,
-		 "die ID: %04X, wafer ID: %02X, A lot ID: %04X, "
-		 "W lot ID: %03X, WP ID: %01X, rev ID: %02X\n",
+		 "die ID: %04llX, wafer ID: %02llX, A lot ID: %04llX, "
+		 "W lot ID: %03llX, WP ID: %01llX, rev ID: %02llX\n",
 		 /* Die ID, bits 0-12 */
-		 (otp[1] << 8 | otp[0]) & 0x1fff,
+		 FIELD_GET(GENMASK_ULL(12, 0), otp),
 		 /* Wafer ID, bits 13-17 */
-		 ((otp[2] << 8 | otp[1]) & 0x03e0) >> 5,
+		 FIELD_GET(GENMASK_ULL(17, 13), otp),
 		 /* A lot ID, bits 18-33 */
-		 ((otp[4] << 16 | otp[3] << 8 | otp[2]) & 0x3fffc) >> 2,
+		 FIELD_GET(GENMASK_ULL(33, 18), otp),
 		 /* W lot ID, bits 34-45 */
-		 ((otp[5] << 8 | otp[4]) & 0x3ffc) >> 2,
+		 FIELD_GET(GENMASK_ULL(45, 34), otp),
 		 /* WP ID, bits 47-49 */
-		 ((otp[6] << 8 | otp[5]) & 0x0380) >> 7,
+		 FIELD_GET(GENMASK_ULL(49, 47), otp),
 		 /* rev ID, bits 50-55 */
-		 otp[6] >> 2);
+		 FIELD_GET(GENMASK_ULL(55, 50), otp));
 
 	return 0;
 }
@@ -863,6 +875,7 @@ static int mpu3050_power_up(struct mpu3050 *mpu3050)
 	ret = regmap_update_bits(mpu3050->map, MPU3050_PWR_MGM,
 				 MPU3050_PWR_MGM_SLEEP, 0);
 	if (ret) {
+		regulator_bulk_disable(ARRAY_SIZE(mpu3050->regs), mpu3050->regs);
 		dev_err(mpu3050->dev, "error setting power mode\n");
 		return ret;
 	}
@@ -1039,19 +1052,19 @@ static const struct iio_trigger_ops mpu3050_trigger_ops = {
 static int mpu3050_trigger_probe(struct iio_dev *indio_dev, int irq)
 {
 	struct mpu3050 *mpu3050 = iio_priv(indio_dev);
+	struct device *dev = mpu3050->dev;
 	unsigned long irq_trig;
 	int ret;
 
 	mpu3050->trig = devm_iio_trigger_alloc(&indio_dev->dev,
 					       "%s-dev%d",
 					       indio_dev->name,
-					       indio_dev->id);
+					       iio_device_id(indio_dev));
 	if (!mpu3050->trig)
 		return -ENOMEM;
 
 	/* Check if IRQ is open drain */
-	if (of_property_read_bool(mpu3050->dev->of_node, "drive-open-drain"))
-		mpu3050->irq_opendrain = true;
+	mpu3050->irq_opendrain = device_property_read_bool(dev, "drive-open-drain");
 
 	irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq));
 	/*
@@ -1107,13 +1120,12 @@ static int mpu3050_trigger_probe(struct iio_dev *indio_dev, int irq)
 				   mpu3050->trig->name,
 				   mpu3050->trig);
 	if (ret) {
-		dev_err(mpu3050->dev,
-			"can't get IRQ %d, error %d\n", irq, ret);
+		dev_err(dev, "can't get IRQ %d, error %d\n", irq, ret);
 		return ret;
 	}
 
 	mpu3050->irq = irq;
-	mpu3050->trig->dev.parent = mpu3050->dev;
+	mpu3050->trig->dev.parent = dev;
 	mpu3050->trig->ops = &mpu3050_trigger_ops;
 	iio_trigger_set_drvdata(mpu3050->trig, indio_dev);
 
@@ -1151,7 +1163,7 @@ int mpu3050_common_probe(struct device *dev,
 	mpu3050->divisor = 99;
 
 	/* Read the mounting matrix, if present */
-	ret = iio_read_mount_matrix(dev, "mount-matrix", &mpu3050->orientation);
+	ret = iio_read_mount_matrix(dev, &mpu3050->orientation);
 	if (ret)
 		return ret;
 
@@ -1198,7 +1210,6 @@ int mpu3050_common_probe(struct device *dev,
 	if (ret)
 		goto err_power_down;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = mpu3050_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mpu3050_channels);
 	indio_dev->info = &mpu3050_info;
@@ -1251,9 +1262,8 @@ err_power_down:
 
 	return ret;
 }
-EXPORT_SYMBOL(mpu3050_common_probe);
 
-int mpu3050_common_remove(struct device *dev)
+void mpu3050_common_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct mpu3050 *mpu3050 = iio_priv(indio_dev);
@@ -1266,12 +1276,8 @@ int mpu3050_common_remove(struct device *dev)
 		free_irq(mpu3050->irq, mpu3050);
 	iio_device_unregister(indio_dev);
 	mpu3050_power_down(mpu3050);
-
-	return 0;
 }
-EXPORT_SYMBOL(mpu3050_common_remove);
 
-#ifdef CONFIG_PM
 static int mpu3050_runtime_suspend(struct device *dev)
 {
 	return mpu3050_power_down(iio_priv(dev_get_drvdata(dev)));
@@ -1281,16 +1287,9 @@ static int mpu3050_runtime_resume(struct device *dev)
 {
 	return mpu3050_power_up(iio_priv(dev_get_drvdata(dev)));
 }
-#endif /* CONFIG_PM */
-
-const struct dev_pm_ops mpu3050_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(mpu3050_runtime_suspend,
-			   mpu3050_runtime_resume, NULL)
-};
-EXPORT_SYMBOL(mpu3050_dev_pm_ops);
 
+DEFINE_RUNTIME_DEV_PM_OPS(mpu3050_dev_pm_ops, mpu3050_runtime_suspend,
+			  mpu3050_runtime_resume, NULL);
 MODULE_AUTHOR("Linus Walleij");
 MODULE_DESCRIPTION("MPU3050 gyroscope driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/gyro/mpu3050-i2c.c b/drivers/iio/gyro/mpu3050-i2c.c
index afa8018b9238..12e3afa9dd11 100644
--- a/drivers/iio/gyro/mpu3050-i2c.c
+++ b/drivers/iio/gyro/mpu3050-i2c.c
@@ -51,8 +51,8 @@ static int mpu3050_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &mpu3050_i2c_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
@@ -78,7 +78,7 @@ static int mpu3050_i2c_probe(struct i2c_client *client,
 	return 0;
 }
 
-static int mpu3050_i2c_remove(struct i2c_client *client)
+static void mpu3050_i2c_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(&client->dev);
 	struct mpu3050 *mpu3050 = iio_priv(indio_dev);
@@ -86,7 +86,7 @@ static int mpu3050_i2c_remove(struct i2c_client *client)
 	if (mpu3050->i2cmux)
 		i2c_mux_del_adapters(mpu3050->i2cmux);
 
-	return mpu3050_common_remove(&client->dev);
+	mpu3050_common_remove(&client->dev);
 }
 
 /*
@@ -114,7 +114,7 @@ static struct i2c_driver mpu3050_i2c_driver = {
 	.driver = {
 		.of_match_table = mpu3050_i2c_of_match,
 		.name = "mpu3050-i2c",
-		.pm = &mpu3050_dev_pm_ops,
+		.pm = pm_ptr(&mpu3050_dev_pm_ops),
 	},
 };
 module_i2c_driver(mpu3050_i2c_driver);
diff --git a/drivers/iio/gyro/mpu3050.h b/drivers/iio/gyro/mpu3050.h
index 835b0249c376..faf4168a3b07 100644
--- a/drivers/iio/gyro/mpu3050.h
+++ b/drivers/iio/gyro/mpu3050.h
@@ -91,7 +91,7 @@ int mpu3050_common_probe(struct device *dev,
 			 struct regmap *map,
 			 int irq,
 			 const char *name);
-int mpu3050_common_remove(struct device *dev);
+void mpu3050_common_remove(struct device *dev);
 
 /* PM ops */
 extern const struct dev_pm_ops mpu3050_dev_pm_ops;
diff --git a/drivers/iio/gyro/ssp_gyro_sensor.c b/drivers/iio/gyro/ssp_gyro_sensor.c
index 4e4ee4167544..d332474bc484 100644
--- a/drivers/iio/gyro/ssp_gyro_sensor.c
+++ b/drivers/iio/gyro/ssp_gyro_sensor.c
@@ -96,7 +96,6 @@ static int ssp_gyro_probe(struct platform_device *pdev)
 	int ret;
 	struct iio_dev *indio_dev;
 	struct ssp_sensor_data *spd;
-	struct iio_buffer *buffer;
 
 	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*spd));
 	if (!indio_dev)
@@ -108,20 +107,15 @@ static int ssp_gyro_probe(struct platform_device *pdev)
 	spd->type = SSP_GYROSCOPE_SENSOR;
 
 	indio_dev->name = ssp_gyro_name;
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &ssp_gyro_iio_info;
-	indio_dev->modes = INDIO_BUFFER_SOFTWARE;
 	indio_dev->channels = ssp_gyro_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ssp_gyro_channels);
 	indio_dev->available_scan_masks = ssp_gyro_scan_mask;
 
-	buffer = devm_iio_kfifo_allocate(&pdev->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
-	indio_dev->setup_ops = &ssp_gyro_buffer_ops;
+	ret = devm_iio_kfifo_buffer_setup(&pdev->dev, indio_dev,
+					  &ssp_gyro_buffer_ops);
+	if (ret)
+		return ret;
 
 	platform_set_drvdata(pdev, indio_dev);
 
@@ -147,3 +141,4 @@ module_platform_driver(ssp_gyro_driver);
 MODULE_AUTHOR("Karol Wrona <k.wrona@samsung.com>");
 MODULE_DESCRIPTION("Samsung sensorhub gyroscopes driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_SSP_SENSORS);
diff --git a/drivers/iio/gyro/st_gyro.h b/drivers/iio/gyro/st_gyro.h
index fd9171cc3aba..f5332b6a02bc 100644
--- a/drivers/iio/gyro/st_gyro.h
+++ b/drivers/iio/gyro/st_gyro.h
@@ -24,21 +24,8 @@
 #define LSM330_GYRO_DEV_NAME		"lsm330_gyro"
 #define LSM9DS0_GYRO_DEV_NAME		"lsm9ds0_gyro"
 
-/**
- * struct st_sensors_platform_data - gyro platform data
- * @drdy_int_pin: DRDY on gyros is available only on INT2 pin.
- */
-static __maybe_unused const struct st_sensors_platform_data gyro_pdata = {
-	.drdy_int_pin = 2,
-};
-
-const struct st_sensor_settings *st_gyro_get_settings(const char *name);
-int st_gyro_common_probe(struct iio_dev *indio_dev);
-void st_gyro_common_remove(struct iio_dev *indio_dev);
-
 #ifdef CONFIG_IIO_BUFFER
 int st_gyro_allocate_ring(struct iio_dev *indio_dev);
-void st_gyro_deallocate_ring(struct iio_dev *indio_dev);
 int st_gyro_trig_set_state(struct iio_trigger *trig, bool state);
 #define ST_GYRO_TRIGGER_SET_STATE (&st_gyro_trig_set_state)
 #else /* CONFIG_IIO_BUFFER */
@@ -46,9 +33,6 @@ static inline int st_gyro_allocate_ring(struct iio_dev *indio_dev)
 {
 	return 0;
 }
-static inline void st_gyro_deallocate_ring(struct iio_dev *indio_dev)
-{
-}
 #define ST_GYRO_TRIGGER_SET_STATE NULL
 #endif /* CONFIG_IIO_BUFFER */
 
diff --git a/drivers/iio/gyro/st_gyro_buffer.c b/drivers/iio/gyro/st_gyro_buffer.c
index 7465ad62391c..1ebfe7aa6c96 100644
--- a/drivers/iio/gyro/st_gyro_buffer.c
+++ b/drivers/iio/gyro/st_gyro_buffer.c
@@ -7,16 +7,10 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
-#include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/trigger.h>
 #include <linux/iio/triggered_buffer.h>
 
 #include <linux/iio/common/st_sensors.h>
@@ -33,15 +27,10 @@ static int st_gyro_buffer_postenable(struct iio_dev *indio_dev)
 {
 	int err;
 
-	err = iio_triggered_buffer_postenable(indio_dev);
+	err = st_sensors_set_axis_enable(indio_dev, indio_dev->active_scan_mask[0]);
 	if (err < 0)
 		return err;
 
-	err = st_sensors_set_axis_enable(indio_dev,
-					 (u8)indio_dev->active_scan_mask[0]);
-	if (err < 0)
-		goto st_gyro_buffer_predisable;
-
 	err = st_sensors_set_enable(indio_dev, true);
 	if (err < 0)
 		goto st_gyro_buffer_enable_all_axis;
@@ -50,27 +39,18 @@ static int st_gyro_buffer_postenable(struct iio_dev *indio_dev)
 
 st_gyro_buffer_enable_all_axis:
 	st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
-st_gyro_buffer_predisable:
-	iio_triggered_buffer_predisable(indio_dev);
 	return err;
 }
 
 static int st_gyro_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int err, err2;
+	int err;
 
 	err = st_sensors_set_enable(indio_dev, false);
 	if (err < 0)
-		goto st_gyro_buffer_predisable;
-
-	err = st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
-
-st_gyro_buffer_predisable:
-	err2 = iio_triggered_buffer_predisable(indio_dev);
-	if (!err)
-		err = err2;
+		return err;
 
-	return err;
+	return st_sensors_set_axis_enable(indio_dev, ST_SENSORS_ENABLE_ALL_AXIS);
 }
 
 static const struct iio_buffer_setup_ops st_gyro_buffer_setup_ops = {
@@ -80,15 +60,7 @@ static const struct iio_buffer_setup_ops st_gyro_buffer_setup_ops = {
 
 int st_gyro_allocate_ring(struct iio_dev *indio_dev)
 {
-	return iio_triggered_buffer_setup(indio_dev, NULL,
-		&st_sensors_trigger_handler, &st_gyro_buffer_setup_ops);
-}
-
-void st_gyro_deallocate_ring(struct iio_dev *indio_dev)
-{
-	iio_triggered_buffer_cleanup(indio_dev);
+	return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
+		NULL, &st_sensors_trigger_handler, &st_gyro_buffer_setup_ops);
 }
 
-MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics gyroscopes buffer");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/gyro/st_gyro_core.c b/drivers/iio/gyro/st_gyro_core.c
index 26c50b24bc08..eaa35da42b33 100644
--- a/drivers/iio/gyro/st_gyro_core.c
+++ b/drivers/iio/gyro/st_gyro_core.c
@@ -9,17 +9,12 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/types.h>
+#include <linux/mutex.h>
 #include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
+#include <linux/sysfs.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/trigger.h>
-#include <linux/iio/buffer.h>
 
 #include <linux/iio/common/st_sensors.h>
 #include "st_gyro.h"
@@ -37,19 +32,36 @@
 #define ST_GYRO_FS_AVL_500DPS			500
 #define ST_GYRO_FS_AVL_2000DPS			2000
 
+static const struct iio_mount_matrix *
+st_gyro_get_mount_matrix(const struct iio_dev *indio_dev,
+			 const struct iio_chan_spec *chan)
+{
+	struct st_sensor_data *gdata = iio_priv(indio_dev);
+
+	return &gdata->mount_matrix;
+}
+
+static const struct iio_chan_spec_ext_info st_gyro_mount_matrix_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_gyro_get_mount_matrix),
+	{ }
+};
+
 static const struct iio_chan_spec st_gyro_16bit_channels[] = {
-	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ANGL_VEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
-			ST_GYRO_DEFAULT_OUT_X_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
+			ST_GYRO_DEFAULT_OUT_X_L_ADDR,
+			st_gyro_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ANGL_VEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
-			ST_GYRO_DEFAULT_OUT_Y_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL,
+			ST_GYRO_DEFAULT_OUT_Y_L_ADDR,
+			st_gyro_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_ANGL_VEL,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
-			ST_GYRO_DEFAULT_OUT_Z_L_ADDR),
+			ST_GYRO_DEFAULT_OUT_Z_L_ADDR,
+			st_gyro_mount_matrix_ext_info),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
@@ -357,6 +369,11 @@ static const struct st_sensor_settings st_gyro_sensors_settings[] = {
 	},
 };
 
+/* DRDY on gyros is available only on INT2 pin */
+static const struct st_sensors_platform_data gyro_pdata = {
+	.drdy_int_pin = 2,
+};
+
 static int st_gyro_read_raw(struct iio_dev *indio_dev,
 			struct iio_chan_spec const *ch, int *val,
 							int *val2, long mask)
@@ -389,24 +406,17 @@ read_error:
 static int st_gyro_write_raw(struct iio_dev *indio_dev,
 		struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
-		err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
-		break;
+		return st_sensors_set_fullscale_by_gain(indio_dev, val2);
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
+
+		return st_sensors_set_odr(indio_dev, val);
 	default:
-		err = -EINVAL;
+		return -EINVAL;
 	}
-
-	return err;
 }
 
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
@@ -455,83 +465,55 @@ const struct st_sensor_settings *st_gyro_get_settings(const char *name)
 
 	return &st_gyro_sensors_settings[index];
 }
-EXPORT_SYMBOL(st_gyro_get_settings);
+EXPORT_SYMBOL_NS(st_gyro_get_settings, IIO_ST_SENSORS);
 
 int st_gyro_common_probe(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *gdata = iio_priv(indio_dev);
+	struct st_sensors_platform_data *pdata;
+	struct device *parent = indio_dev->dev.parent;
 	int err;
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &gyro_info;
 
-	err = st_sensors_power_enable(indio_dev);
-	if (err)
-		return err;
-
 	err = st_sensors_verify_id(indio_dev);
 	if (err < 0)
-		goto st_gyro_power_off;
+		return err;
 
 	gdata->num_data_channels = ST_GYRO_NUMBER_DATA_CHANNELS;
 	indio_dev->channels = gdata->sensor_settings->ch;
 	indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 
-	gdata->current_fullscale = (struct st_sensor_fullscale_avl *)
-					&gdata->sensor_settings->fs.fs_avl[0];
+	err = iio_read_mount_matrix(parent, &gdata->mount_matrix);
+	if (err)
+		return err;
+
+	gdata->current_fullscale = &gdata->sensor_settings->fs.fs_avl[0];
 	gdata->odr = gdata->sensor_settings->odr.odr_avl[0].hz;
 
-	err = st_sensors_init_sensor(indio_dev,
-				(struct st_sensors_platform_data *)&gyro_pdata);
+	pdata = (struct st_sensors_platform_data *)&gyro_pdata;
+
+	err = st_sensors_init_sensor(indio_dev, pdata);
 	if (err < 0)
-		goto st_gyro_power_off;
+		return err;
 
 	err = st_gyro_allocate_ring(indio_dev);
 	if (err < 0)
-		goto st_gyro_power_off;
+		return err;
 
 	if (gdata->irq > 0) {
 		err = st_sensors_allocate_trigger(indio_dev,
 						  ST_GYRO_TRIGGER_OPS);
 		if (err < 0)
-			goto st_gyro_probe_trigger_error;
+			return err;
 	}
 
-	err = iio_device_register(indio_dev);
-	if (err)
-		goto st_gyro_device_register_error;
-
-	dev_info(&indio_dev->dev, "registered gyroscope %s\n",
-		 indio_dev->name);
-
-	return 0;
-
-st_gyro_device_register_error:
-	if (gdata->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-st_gyro_probe_trigger_error:
-	st_gyro_deallocate_ring(indio_dev);
-st_gyro_power_off:
-	st_sensors_power_disable(indio_dev);
-
-	return err;
-}
-EXPORT_SYMBOL(st_gyro_common_probe);
-
-void st_gyro_common_remove(struct iio_dev *indio_dev)
-{
-	struct st_sensor_data *gdata = iio_priv(indio_dev);
-
-	st_sensors_power_disable(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (gdata->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-
-	st_gyro_deallocate_ring(indio_dev);
+	return devm_iio_device_register(parent, indio_dev);
 }
-EXPORT_SYMBOL(st_gyro_common_remove);
+EXPORT_SYMBOL_NS(st_gyro_common_probe, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/gyro/st_gyro_i2c.c b/drivers/iio/gyro/st_gyro_i2c.c
index 8190966e6ff0..8c7af42b6558 100644
--- a/drivers/iio/gyro/st_gyro_i2c.c
+++ b/drivers/iio/gyro/st_gyro_i2c.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 
@@ -86,18 +86,11 @@ static int st_gyro_i2c_probe(struct i2c_client *client,
 	if (err < 0)
 		return err;
 
-	err = st_gyro_common_probe(indio_dev);
-	if (err < 0)
+	err = st_sensors_power_enable(indio_dev);
+	if (err)
 		return err;
 
-	return 0;
-}
-
-static int st_gyro_i2c_remove(struct i2c_client *client)
-{
-	st_gyro_common_remove(i2c_get_clientdata(client));
-
-	return 0;
+	return st_gyro_common_probe(indio_dev);
 }
 
 static const struct i2c_device_id st_gyro_id_table[] = {
@@ -120,7 +113,6 @@ static struct i2c_driver st_gyro_driver = {
 		.of_match_table = st_gyro_of_match,
 	},
 	.probe = st_gyro_i2c_probe,
-	.remove = st_gyro_i2c_remove,
 	.id_table = st_gyro_id_table,
 };
 module_i2c_driver(st_gyro_driver);
@@ -128,3 +120,4 @@ module_i2c_driver(st_gyro_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics gyroscopes i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/gyro/st_gyro_spi.c b/drivers/iio/gyro/st_gyro_spi.c
index efb862763ca3..22aaabe48e4a 100644
--- a/drivers/iio/gyro/st_gyro_spi.c
+++ b/drivers/iio/gyro/st_gyro_spi.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 
@@ -90,18 +90,11 @@ static int st_gyro_spi_probe(struct spi_device *spi)
 	if (err < 0)
 		return err;
 
-	err = st_gyro_common_probe(indio_dev);
-	if (err < 0)
+	err = st_sensors_power_enable(indio_dev);
+	if (err)
 		return err;
 
-	return 0;
-}
-
-static int st_gyro_spi_remove(struct spi_device *spi)
-{
-	st_gyro_common_remove(spi_get_drvdata(spi));
-
-	return 0;
+	return st_gyro_common_probe(indio_dev);
 }
 
 static const struct spi_device_id st_gyro_id_table[] = {
@@ -124,7 +117,6 @@ static struct spi_driver st_gyro_driver = {
 		.of_match_table = st_gyro_of_match,
 	},
 	.probe = st_gyro_spi_probe,
-	.remove = st_gyro_spi_remove,
 	.id_table = st_gyro_id_table,
 };
 module_spi_driver(st_gyro_driver);
@@ -132,3 +124,4 @@ module_spi_driver(st_gyro_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics gyroscopes spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/health/afe4403.c b/drivers/iio/health/afe4403.c
index dc22dc363a99..3bb4028c5d74 100644
--- a/drivers/iio/health/afe4403.c
+++ b/drivers/iio/health/afe4403.c
@@ -2,7 +2,7 @@
 /*
  * AFE4403 Heart Rate Monitors and Low-Cost Pulse Oximeters
  *
- * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2015-2016 Texas Instruments Incorporated - https://www.ti.com/
  *	Andrew F. Davis <afd@ti.com>
  */
 
@@ -23,6 +23,8 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 
+#include <asm/unaligned.h>
+
 #include "afe440x.h"
 
 #define AFE4403_DRIVER_NAME		"afe4403"
@@ -63,6 +65,7 @@ static const struct reg_field afe4403_reg_fields[] = {
  * @regulator: Pointer to the regulator for the IC
  * @trig: IIO trigger for this device
  * @irq: ADC_RDY line interrupt number
+ * @buffer: Used to construct data layout to push into IIO buffer.
  */
 struct afe4403_data {
 	struct device *dev;
@@ -72,6 +75,8 @@ struct afe4403_data {
 	struct regulator *regulator;
 	struct iio_trigger *trig;
 	int irq;
+	/* Ensure suitable alignment for timestamp */
+	s32 buffer[8] __aligned(8);
 };
 
 enum afe4403_chan_id {
@@ -220,13 +225,11 @@ static int afe4403_read(struct afe4403_data *afe, unsigned int reg, u32 *val)
 	if (ret)
 		return ret;
 
-	ret = spi_write_then_read(afe->spi, &reg, 1, rx, 3);
+	ret = spi_write_then_read(afe->spi, &reg, 1, rx, sizeof(rx));
 	if (ret)
 		return ret;
 
-	*val = (rx[0] << 16) |
-		(rx[1] << 8) |
-		(rx[2]);
+	*val = get_unaligned_be24(&rx[0]);
 
 	/* Disable reading from the device */
 	tx[3] = AFE440X_CONTROL0_WRITE;
@@ -309,7 +312,6 @@ static irqreturn_t afe4403_trigger_handler(int irq, void *private)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct afe4403_data *afe = iio_priv(indio_dev);
 	int ret, bit, i = 0;
-	s32 buffer[8];
 	u8 tx[4] = {AFE440X_CONTROL0, 0x0, 0x0, AFE440X_CONTROL0_READ};
 	u8 rx[3];
 
@@ -322,13 +324,11 @@ static irqreturn_t afe4403_trigger_handler(int irq, void *private)
 			 indio_dev->masklength) {
 		ret = spi_write_then_read(afe->spi,
 					  &afe4403_channel_values[bit], 1,
-					  rx, 3);
+					  rx, sizeof(rx));
 		if (ret)
 			goto err;
 
-		buffer[i++] = (rx[0] << 16) |
-				(rx[1] << 8) |
-				(rx[2]);
+		afe->buffer[i++] = get_unaligned_be24(&rx[0]);
 	}
 
 	/* Disable reading from the device */
@@ -337,16 +337,14 @@ static irqreturn_t afe4403_trigger_handler(int irq, void *private)
 	if (ret)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, afe->buffer,
+					   pf->timestamp);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
 
 	return IRQ_HANDLED;
 }
 
-static const struct iio_trigger_ops afe4403_trigger_ops = {
-};
-
 #define AFE4403_TIMING_PAIRS			\
 	{ AFE440X_LED2STC,	0x000050 },	\
 	{ AFE440X_LED2ENDC,	0x0003e7 },	\
@@ -410,7 +408,7 @@ static const struct of_device_id afe4403_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, afe4403_of_match);
 
-static int __maybe_unused afe4403_suspend(struct device *dev)
+static int afe4403_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(to_spi_device(dev));
 	struct afe4403_data *afe = iio_priv(indio_dev);
@@ -431,7 +429,7 @@ static int __maybe_unused afe4403_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused afe4403_resume(struct device *dev)
+static int afe4403_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(to_spi_device(dev));
 	struct afe4403_data *afe = iio_priv(indio_dev);
@@ -451,7 +449,8 @@ static int __maybe_unused afe4403_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(afe4403_pm_ops, afe4403_suspend, afe4403_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(afe4403_pm_ops, afe4403_suspend,
+				afe4403_resume);
 
 static int afe4403_probe(struct spi_device *spi)
 {
@@ -486,10 +485,10 @@ static int afe4403_probe(struct spi_device *spi)
 	}
 
 	afe->regulator = devm_regulator_get(afe->dev, "tx_sup");
-	if (IS_ERR(afe->regulator)) {
-		dev_err(afe->dev, "Unable to get regulator\n");
-		return PTR_ERR(afe->regulator);
-	}
+	if (IS_ERR(afe->regulator))
+		return dev_err_probe(afe->dev, PTR_ERR(afe->regulator),
+				     "Unable to get regulator\n");
+
 	ret = regulator_enable(afe->regulator);
 	if (ret) {
 		dev_err(afe->dev, "Unable to enable regulator\n");
@@ -511,7 +510,6 @@ static int afe4403_probe(struct spi_device *spi)
 	}
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = afe->dev;
 	indio_dev->channels = afe4403_channels;
 	indio_dev->num_channels = ARRAY_SIZE(afe4403_channels);
 	indio_dev->name = AFE4403_DRIVER_NAME;
@@ -521,7 +519,7 @@ static int afe4403_probe(struct spi_device *spi)
 		afe->trig = devm_iio_trigger_alloc(afe->dev,
 						   "%s-dev%d",
 						   indio_dev->name,
-						   indio_dev->id);
+						   iio_device_id(indio_dev));
 		if (!afe->trig) {
 			dev_err(afe->dev, "Unable to allocate IIO trigger\n");
 			ret = -ENOMEM;
@@ -530,9 +528,6 @@ static int afe4403_probe(struct spi_device *spi)
 
 		iio_trigger_set_drvdata(afe->trig, indio_dev);
 
-		afe->trig->ops = &afe4403_trigger_ops;
-		afe->trig->dev.parent = afe->dev;
-
 		ret = iio_trigger_register(afe->trig);
 		if (ret) {
 			dev_err(afe->dev, "Unable to register IIO trigger\n");
@@ -576,7 +571,7 @@ err_disable_reg:
 	return ret;
 }
 
-static int afe4403_remove(struct spi_device *spi)
+static void afe4403_remove(struct spi_device *spi)
 {
 	struct iio_dev *indio_dev = spi_get_drvdata(spi);
 	struct afe4403_data *afe = iio_priv(indio_dev);
@@ -590,12 +585,8 @@ static int afe4403_remove(struct spi_device *spi)
 		iio_trigger_unregister(afe->trig);
 
 	ret = regulator_disable(afe->regulator);
-	if (ret) {
-		dev_err(afe->dev, "Unable to disable regulator\n");
-		return ret;
-	}
-
-	return 0;
+	if (ret)
+		dev_warn(afe->dev, "Unable to disable regulator\n");
 }
 
 static const struct spi_device_id afe4403_ids[] = {
@@ -608,7 +599,7 @@ static struct spi_driver afe4403_spi_driver = {
 	.driver = {
 		.name = AFE4403_DRIVER_NAME,
 		.of_match_table = afe4403_of_match,
-		.pm = &afe4403_pm_ops,
+		.pm = pm_sleep_ptr(&afe4403_pm_ops),
 	},
 	.probe = afe4403_probe,
 	.remove = afe4403_remove,
diff --git a/drivers/iio/health/afe4404.c b/drivers/iio/health/afe4404.c
index e728bbb21ca8..8fca787b2524 100644
--- a/drivers/iio/health/afe4404.c
+++ b/drivers/iio/health/afe4404.c
@@ -2,7 +2,7 @@
 /*
  * AFE4404 Heart Rate Monitors and Low-Cost Pulse Oximeters
  *
- * Copyright (C) 2015-2016 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2015-2016 Texas Instruments Incorporated - https://www.ti.com/
  *	Andrew F. Davis <afd@ti.com>
  */
 
@@ -83,6 +83,7 @@ static const struct reg_field afe4404_reg_fields[] = {
  * @regulator: Pointer to the regulator for the IC
  * @trig: IIO trigger for this device
  * @irq: ADC_RDY line interrupt number
+ * @buffer: Used to construct a scan to push to the iio buffer.
  */
 struct afe4404_data {
 	struct device *dev;
@@ -91,6 +92,7 @@ struct afe4404_data {
 	struct regulator *regulator;
 	struct iio_trigger *trig;
 	int irq;
+	s32 buffer[10] __aligned(8);
 };
 
 enum afe4404_chan_id {
@@ -328,26 +330,23 @@ static irqreturn_t afe4404_trigger_handler(int irq, void *private)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct afe4404_data *afe = iio_priv(indio_dev);
 	int ret, bit, i = 0;
-	s32 buffer[10];
 
 	for_each_set_bit(bit, indio_dev->active_scan_mask,
 			 indio_dev->masklength) {
 		ret = regmap_read(afe->regmap, afe4404_channel_values[bit],
-				  &buffer[i++]);
+				  &afe->buffer[i++]);
 		if (ret)
 			goto err;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, afe->buffer,
+					   pf->timestamp);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
 
 	return IRQ_HANDLED;
 }
 
-static const struct iio_trigger_ops afe4404_trigger_ops = {
-};
-
 /* Default timings from data-sheet */
 #define AFE4404_TIMING_PAIRS			\
 	{ AFE440X_PRPCOUNT,	39999	},	\
@@ -416,7 +415,7 @@ static const struct of_device_id afe4404_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, afe4404_of_match);
 
-static int __maybe_unused afe4404_suspend(struct device *dev)
+static int afe4404_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct afe4404_data *afe = iio_priv(indio_dev);
@@ -437,7 +436,7 @@ static int __maybe_unused afe4404_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused afe4404_resume(struct device *dev)
+static int afe4404_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct afe4404_data *afe = iio_priv(indio_dev);
@@ -457,7 +456,8 @@ static int __maybe_unused afe4404_resume(struct device *dev)
 	return 0;
 }
 
-static SIMPLE_DEV_PM_OPS(afe4404_pm_ops, afe4404_suspend, afe4404_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(afe4404_pm_ops, afe4404_suspend,
+				afe4404_resume);
 
 static int afe4404_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
@@ -492,10 +492,10 @@ static int afe4404_probe(struct i2c_client *client,
 	}
 
 	afe->regulator = devm_regulator_get(afe->dev, "tx_sup");
-	if (IS_ERR(afe->regulator)) {
-		dev_err(afe->dev, "Unable to get regulator\n");
-		return PTR_ERR(afe->regulator);
-	}
+	if (IS_ERR(afe->regulator))
+		return dev_err_probe(afe->dev, PTR_ERR(afe->regulator),
+				     "Unable to get regulator\n");
+
 	ret = regulator_enable(afe->regulator);
 	if (ret) {
 		dev_err(afe->dev, "Unable to enable regulator\n");
@@ -517,7 +517,6 @@ static int afe4404_probe(struct i2c_client *client,
 	}
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = afe->dev;
 	indio_dev->channels = afe4404_channels;
 	indio_dev->num_channels = ARRAY_SIZE(afe4404_channels);
 	indio_dev->name = AFE4404_DRIVER_NAME;
@@ -527,7 +526,7 @@ static int afe4404_probe(struct i2c_client *client,
 		afe->trig = devm_iio_trigger_alloc(afe->dev,
 						   "%s-dev%d",
 						   indio_dev->name,
-						   indio_dev->id);
+						   iio_device_id(indio_dev));
 		if (!afe->trig) {
 			dev_err(afe->dev, "Unable to allocate IIO trigger\n");
 			ret = -ENOMEM;
@@ -536,9 +535,6 @@ static int afe4404_probe(struct i2c_client *client,
 
 		iio_trigger_set_drvdata(afe->trig, indio_dev);
 
-		afe->trig->ops = &afe4404_trigger_ops;
-		afe->trig->dev.parent = afe->dev;
-
 		ret = iio_trigger_register(afe->trig);
 		if (ret) {
 			dev_err(afe->dev, "Unable to register IIO trigger\n");
@@ -582,7 +578,7 @@ disable_reg:
 	return ret;
 }
 
-static int afe4404_remove(struct i2c_client *client)
+static void afe4404_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct afe4404_data *afe = iio_priv(indio_dev);
@@ -596,12 +592,8 @@ static int afe4404_remove(struct i2c_client *client)
 		iio_trigger_unregister(afe->trig);
 
 	ret = regulator_disable(afe->regulator);
-	if (ret) {
+	if (ret)
 		dev_err(afe->dev, "Unable to disable regulator\n");
-		return ret;
-	}
-
-	return 0;
 }
 
 static const struct i2c_device_id afe4404_ids[] = {
@@ -614,7 +606,7 @@ static struct i2c_driver afe4404_i2c_driver = {
 	.driver = {
 		.name = AFE4404_DRIVER_NAME,
 		.of_match_table = afe4404_of_match,
-		.pm = &afe4404_pm_ops,
+		.pm = pm_sleep_ptr(&afe4404_pm_ops),
 	},
 	.probe = afe4404_probe,
 	.remove = afe4404_remove,
diff --git a/drivers/iio/health/afe440x.h b/drivers/iio/health/afe440x.h
index 7829c4fcd03b..0adea0047eba 100644
--- a/drivers/iio/health/afe440x.h
+++ b/drivers/iio/health/afe440x.h
@@ -2,7 +2,7 @@
 /*
  * AFE440X Heart Rate Monitors and Low-Cost Pulse Oximeters
  *
- * Copyright (C) 2015 Texas Instruments Incorporated - http://www.ti.com/
+ * Copyright (C) 2015 Texas Instruments Incorporated - https://www.ti.com/
  *	Andrew F. Davis <afd@ti.com>
  */
 
diff --git a/drivers/iio/health/max30100.c b/drivers/iio/health/max30100.c
index 84010501762d..2cca5e0519f8 100644
--- a/drivers/iio/health/max30100.c
+++ b/drivers/iio/health/max30100.c
@@ -16,7 +16,7 @@
 #include <linux/irq.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -267,11 +267,10 @@ static int max30100_get_current_idx(unsigned int val, int *reg)
 static int max30100_led_init(struct max30100_data *data)
 {
 	struct device *dev = &data->client->dev;
-	struct device_node *np = dev->of_node;
 	unsigned int val[2];
 	int reg, ret;
 
-	ret = of_property_read_u32_array(np, "maxim,led-current-microamp",
+	ret = device_property_read_u32_array(dev, "maxim,led-current-microamp",
 					(unsigned int *) &val, 2);
 	if (ret) {
 		/* Default to 24 mA RED LED, 50 mA IR LED */
@@ -419,7 +418,6 @@ static int max30100_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
 	struct max30100_data *data;
-	struct iio_buffer *buffer;
 	struct iio_dev *indio_dev;
 	int ret;
 
@@ -427,20 +425,17 @@ static int max30100_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 
-	buffer = devm_iio_kfifo_allocate(&client->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
 	indio_dev->name = MAX30100_DRV_NAME;
 	indio_dev->channels = max30100_channels;
 	indio_dev->info = &max30100_info;
 	indio_dev->num_channels = ARRAY_SIZE(max30100_channels);
 	indio_dev->available_scan_masks = max30100_scan_masks;
-	indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE);
-	indio_dev->setup_ops = &max30100_buffer_setup_ops;
-	indio_dev->dev.parent = &client->dev;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
+					  &max30100_buffer_setup_ops);
+	if (ret)
+		return ret;
 
 	data = iio_priv(indio_dev);
 	data->indio_dev = indio_dev;
@@ -476,15 +471,13 @@ static int max30100_probe(struct i2c_client *client,
 	return iio_device_register(indio_dev);
 }
 
-static int max30100_remove(struct i2c_client *client)
+static void max30100_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct max30100_data *data = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	max30100_set_powermode(data, false);
-
-	return 0;
 }
 
 static const struct i2c_device_id max30100_id[] = {
@@ -502,7 +495,7 @@ MODULE_DEVICE_TABLE(of, max30100_dt_ids);
 static struct i2c_driver max30100_driver = {
 	.driver = {
 		.name	= MAX30100_DRV_NAME,
-		.of_match_table	= of_match_ptr(max30100_dt_ids),
+		.of_match_table	= max30100_dt_ids,
 	},
 	.probe		= max30100_probe,
 	.remove		= max30100_remove,
diff --git a/drivers/iio/health/max30102.c b/drivers/iio/health/max30102.c
index 74fc260b957e..437298a29f2d 100644
--- a/drivers/iio/health/max30102.c
+++ b/drivers/iio/health/max30102.c
@@ -2,7 +2,7 @@
 /*
  * max30102.c - Support for MAX30102 heart rate and pulse oximeter sensor
  *
- * Copyright (C) 2017 Matt Ranostay <matt@ranostay.consulting>
+ * Copyright (C) 2017 Matt Ranostay <matt.ranostay@konsulko.com>
  *
  * Support for MAX30105 optical particle sensor
  * Copyright (C) 2017 Peter Meerwald-Stadler <pmeerw@pmeerw.net>
@@ -19,7 +19,7 @@
 #include <linux/irq.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/regmap.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -273,10 +273,10 @@ static int max30102_read_measurement(struct max30102_data *data,
 	switch (measurements) {
 	case 3:
 		MAX30102_COPY_DATA(2);
-		/* fall through */
+		fallthrough;
 	case 2:
 		MAX30102_COPY_DATA(1);
-		/* fall through */
+		fallthrough;
 	case 1:
 		MAX30102_COPY_DATA(0);
 		break;
@@ -323,11 +323,10 @@ static int max30102_get_current_idx(unsigned int val, int *reg)
 static int max30102_led_init(struct max30102_data *data)
 {
 	struct device *dev = &data->client->dev;
-	struct device_node *np = dev->of_node;
 	unsigned int val;
 	int reg, ret;
 
-	ret = of_property_read_u32(np, "maxim,red-led-current-microamp", &val);
+	ret = device_property_read_u32(dev, "maxim,red-led-current-microamp", &val);
 	if (ret) {
 		dev_info(dev, "no red-led-current-microamp set\n");
 
@@ -346,7 +345,7 @@ static int max30102_led_init(struct max30102_data *data)
 		return ret;
 
 	if (data->chip_id == max30105) {
-		ret = of_property_read_u32(np,
+		ret = device_property_read_u32(dev,
 			"maxim,green-led-current-microamp", &val);
 		if (ret) {
 			dev_info(dev, "no green-led-current-microamp set\n");
@@ -368,7 +367,7 @@ static int max30102_led_init(struct max30102_data *data)
 			return ret;
 	}
 
-	ret = of_property_read_u32(np, "maxim,ir-led-current-microamp", &val);
+	ret = device_property_read_u32(dev, "maxim,ir-led-current-microamp", &val);
 	if (ret) {
 		dev_info(dev, "no ir-led-current-microamp set\n");
 
@@ -507,7 +506,6 @@ static int max30102_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
 	struct max30102_data *data;
-	struct iio_buffer *buffer;
 	struct iio_dev *indio_dev;
 	int ret;
 	unsigned int reg;
@@ -516,17 +514,9 @@ static int max30102_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 
-	buffer = devm_iio_kfifo_allocate(&client->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
 	indio_dev->name = MAX30102_DRV_NAME;
 	indio_dev->info = &max30102_info;
-	indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE);
-	indio_dev->setup_ops = &max30102_buffer_setup_ops;
-	indio_dev->dev.parent = &client->dev;
+	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	data = iio_priv(indio_dev);
 	data->indio_dev = indio_dev;
@@ -551,6 +541,11 @@ static int max30102_probe(struct i2c_client *client,
 		return -ENODEV;
 	}
 
+	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
+					  &max30102_buffer_setup_ops);
+	if (ret)
+		return ret;
+
 	data->regmap = devm_regmap_init_i2c(client, &max30102_regmap_config);
 	if (IS_ERR(data->regmap)) {
 		dev_err(&client->dev, "regmap initialization failed\n");
@@ -597,15 +592,13 @@ static int max30102_probe(struct i2c_client *client,
 	return iio_device_register(indio_dev);
 }
 
-static int max30102_remove(struct i2c_client *client)
+static void max30102_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct max30102_data *data = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	max30102_set_power(data, false);
-
-	return 0;
 }
 
 static const struct i2c_device_id max30102_id[] = {
@@ -625,7 +618,7 @@ MODULE_DEVICE_TABLE(of, max30102_dt_ids);
 static struct i2c_driver max30102_driver = {
 	.driver = {
 		.name	= MAX30102_DRV_NAME,
-		.of_match_table	= of_match_ptr(max30102_dt_ids),
+		.of_match_table	= max30102_dt_ids,
 	},
 	.probe		= max30102_probe,
 	.remove		= max30102_remove,
@@ -633,6 +626,6 @@ static struct i2c_driver max30102_driver = {
 };
 module_i2c_driver(max30102_driver);
 
-MODULE_AUTHOR("Matt Ranostay <matt@ranostay.consulting>");
+MODULE_AUTHOR("Matt Ranostay <matt.ranostay@konsulko.com>");
 MODULE_DESCRIPTION("MAX30102 heart rate/pulse oximeter and MAX30105 particle sensor driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/humidity/Kconfig b/drivers/iio/humidity/Kconfig
index 6c5507a6cd74..2de5494e7c22 100644
--- a/drivers/iio/humidity/Kconfig
+++ b/drivers/iio/humidity/Kconfig
@@ -38,11 +38,20 @@ config HDC100X
 	  To compile this driver as a module, choose M here: the module
 	  will be called hdc100x.
 
+config HDC2010
+	tristate "TI HDC2010 relative humidity and temperature sensor"
+	depends on I2C
+	help
+	  Say yes here to build support for the Texas Instruments
+	  HDC2010 and HDC2080 relative humidity and temperature sensors.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called hdc2010.
+
 config HID_SENSOR_HUMIDITY
 	tristate "HID Environmental humidity sensor"
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	help
diff --git a/drivers/iio/humidity/Makefile b/drivers/iio/humidity/Makefile
index ae4204995017..f19ff3de97c5 100644
--- a/drivers/iio/humidity/Makefile
+++ b/drivers/iio/humidity/Makefile
@@ -6,6 +6,7 @@
 obj-$(CONFIG_AM2315) += am2315.o
 obj-$(CONFIG_DHT11) += dht11.o
 obj-$(CONFIG_HDC100X) += hdc100x.o
+obj-$(CONFIG_HDC2010) += hdc2010.o
 obj-$(CONFIG_HID_SENSOR_HUMIDITY) += hid-sensor-humidity.o
 
 hts221-y := hts221_core.o \
diff --git a/drivers/iio/humidity/am2315.c b/drivers/iio/humidity/am2315.c
index 3bac98e731d9..4a39f1019347 100644
--- a/drivers/iio/humidity/am2315.c
+++ b/drivers/iio/humidity/am2315.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Aosong AM2315 relative humidity and temperature
  *
  * Copyright (c) 2016, Intel Corporation.
@@ -7,7 +7,6 @@
  * 7-bit I2C address: 0x5C.
  */
 
-#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/kernel.h>
@@ -33,7 +32,11 @@
 struct am2315_data {
 	struct i2c_client *client;
 	struct mutex lock;
-	s16 buffer[8]; /* 2x16-bit channels + 2x16 padding + 4x16 timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		s16 chans[2];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 struct am2315_sensor_data {
@@ -167,20 +170,20 @@ static irqreturn_t am2315_trigger_handler(int irq, void *p)
 
 	mutex_lock(&data->lock);
 	if (*(indio_dev->active_scan_mask) == AM2315_ALL_CHANNEL_MASK) {
-		data->buffer[0] = sensor_data.hum_data;
-		data->buffer[1] = sensor_data.temp_data;
+		data->scan.chans[0] = sensor_data.hum_data;
+		data->scan.chans[1] = sensor_data.temp_data;
 	} else {
 		i = 0;
 		for_each_set_bit(bit, indio_dev->active_scan_mask,
 				 indio_dev->masklength) {
-			data->buffer[i] = (bit ? sensor_data.temp_data :
-						 sensor_data.hum_data);
+			data->scan.chans[i] = (bit ? sensor_data.temp_data :
+					       sensor_data.hum_data);
 			i++;
 		}
 	}
 	mutex_unlock(&data->lock);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -233,7 +236,6 @@ static int am2315_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &am2315_info;
 	indio_dev->name = AM2315_DRIVER_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -257,17 +259,9 @@ static const struct i2c_device_id am2315_i2c_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, am2315_i2c_id);
 
-static const struct acpi_device_id am2315_acpi_id[] = {
-	{"AOS2315", 0},
-	{}
-};
-
-MODULE_DEVICE_TABLE(acpi, am2315_acpi_id);
-
 static struct i2c_driver am2315_driver = {
 	.driver = {
 		.name = "am2315",
-		.acpi_match_table = ACPI_PTR(am2315_acpi_id),
 	},
 	.probe =            am2315_probe,
 	.id_table =         am2315_i2c_id,
diff --git a/drivers/iio/humidity/dht11.c b/drivers/iio/humidity/dht11.c
index d05c6fdb758b..c97e25448772 100644
--- a/drivers/iio/humidity/dht11.c
+++ b/drivers/iio/humidity/dht11.c
@@ -11,10 +11,9 @@
 #include <linux/kernel.h>
 #include <linux/printk.h>
 #include <linux/slab.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/sysfs.h>
 #include <linux/io.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
 #include <linux/wait.h>
@@ -321,7 +320,6 @@ static int dht11_probe(struct platform_device *pdev)
 	init_completion(&dht11->completion);
 	mutex_init(&dht11->lock);
 	iio->name = pdev->name;
-	iio->dev.parent = &pdev->dev;
 	iio->info = &dht11_iio_info;
 	iio->modes = INDIO_DIRECT_MODE;
 	iio->channels = dht11_chan_spec;
diff --git a/drivers/iio/humidity/hdc100x.c b/drivers/iio/humidity/hdc100x.c
index 7ecd2ffa3132..47f8e8ef56d6 100644
--- a/drivers/iio/humidity/hdc100x.c
+++ b/drivers/iio/humidity/hdc100x.c
@@ -6,15 +6,16 @@
  * Author: Matt Ranostay <matt.ranostay@konsulko.com>
  *
  * Datasheets:
- * http://www.ti.com/product/HDC1000/datasheet
- * http://www.ti.com/product/HDC1008/datasheet
- * http://www.ti.com/product/HDC1010/datasheet
- * http://www.ti.com/product/HDC1050/datasheet
- * http://www.ti.com/product/HDC1080/datasheet
+ * https://www.ti.com/product/HDC1000/datasheet
+ * https://www.ti.com/product/HDC1008/datasheet
+ * https://www.ti.com/product/HDC1010/datasheet
+ * https://www.ti.com/product/HDC1050/datasheet
+ * https://www.ti.com/product/HDC1080/datasheet
  */
 
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/init.h>
 #include <linux/i2c.h>
 
@@ -24,6 +25,8 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 
+#include <linux/time.h>
+
 #define HDC100X_REG_TEMP			0x00
 #define HDC100X_REG_HUMIDITY			0x01
 
@@ -38,6 +41,11 @@ struct hdc100x_data {
 
 	/* integration time of the sensor */
 	int adc_int_us[2];
+	/* Ensure natural alignment of timestamp */
+	struct {
+		__be16 channels[2];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 /* integration time in us */
@@ -160,7 +168,7 @@ static int hdc100x_get_measurement(struct hdc100x_data *data,
 				   struct iio_chan_spec const *chan)
 {
 	struct i2c_client *client = data->client;
-	int delay = data->adc_int_us[chan->address];
+	int delay = data->adc_int_us[chan->address] + 1*USEC_PER_MSEC;
 	int ret;
 	__be16 val;
 
@@ -278,17 +286,11 @@ static int hdc100x_buffer_postenable(struct iio_dev *indio_dev)
 	struct hdc100x_data *data = iio_priv(indio_dev);
 	int ret;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret)
-		return ret;
-
 	/* Buffer is enabled. First set ACQ Mode, then attach poll func */
 	mutex_lock(&data->lock);
 	ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE,
 				    HDC100X_REG_CONFIG_ACQ_MODE);
 	mutex_unlock(&data->lock);
-	if (ret)
-		iio_triggered_buffer_predisable(indio_dev);
 
 	return ret;
 }
@@ -296,16 +298,12 @@ static int hdc100x_buffer_postenable(struct iio_dev *indio_dev)
 static int hdc100x_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct hdc100x_data *data = iio_priv(indio_dev);
-	int ret, ret2;
+	int ret;
 
 	mutex_lock(&data->lock);
 	ret = hdc100x_update_config(data, HDC100X_REG_CONFIG_ACQ_MODE, 0);
 	mutex_unlock(&data->lock);
 
-	ret2 = iio_triggered_buffer_predisable(indio_dev);
-	if (ret == 0)
-		ret = ret2;
-
 	return ret;
 }
 
@@ -320,9 +318,8 @@ static irqreturn_t hdc100x_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct hdc100x_data *data = iio_priv(indio_dev);
 	struct i2c_client *client = data->client;
-	int delay = data->adc_int_us[0] + data->adc_int_us[1];
+	int delay = data->adc_int_us[0] + data->adc_int_us[1] + 2*USEC_PER_MSEC;
 	int ret;
-	s16 buf[8];  /* 2x s16 + padding + 8 byte timestamp */
 
 	/* dual read starts at temp register */
 	mutex_lock(&data->lock);
@@ -333,13 +330,13 @@ static irqreturn_t hdc100x_trigger_handler(int irq, void *p)
 	}
 	usleep_range(delay, delay + 1000);
 
-	ret = i2c_master_recv(client, (u8 *)buf, 4);
+	ret = i2c_master_recv(client, (u8 *)data->scan.channels, 4);
 	if (ret < 0) {
 		dev_err(&client->dev, "cannot read sensor data\n");
 		goto err;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   iio_get_time_ns(indio_dev));
 err:
 	mutex_unlock(&data->lock);
@@ -374,7 +371,6 @@ static int hdc100x_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &hdc100x_info;
@@ -421,10 +417,17 @@ static const struct of_device_id hdc100x_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, hdc100x_dt_ids);
 
+static const struct acpi_device_id hdc100x_acpi_match[] = {
+	{ "TXNW1010" },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, hdc100x_acpi_match);
+
 static struct i2c_driver hdc100x_driver = {
 	.driver = {
 		.name	= "hdc100x",
-		.of_match_table = of_match_ptr(hdc100x_dt_ids),
+		.of_match_table = hdc100x_dt_ids,
+		.acpi_match_table = hdc100x_acpi_match,
 	},
 	.probe = hdc100x_probe,
 	.id_table = hdc100x_id,
diff --git a/drivers/iio/humidity/hdc2010.c b/drivers/iio/humidity/hdc2010.c
new file mode 100644
index 000000000000..d6858ccb056e
--- /dev/null
+++ b/drivers/iio/humidity/hdc2010.c
@@ -0,0 +1,350 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * hdc2010.c - Support for the TI HDC2010 and HDC2080
+ * temperature + relative humidity sensors
+ *
+ * Copyright (C) 2020 Norphonic AS
+ * Author: Eugene Zaikonnikov <ez@norphonic.com>
+ *
+ * Datasheet: https://www.ti.com/product/HDC2010/datasheet
+ * Datasheet: https://www.ti.com/product/HDC2080/datasheet
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/i2c.h>
+#include <linux/bitops.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#define HDC2010_REG_TEMP_LOW			0x00
+#define HDC2010_REG_TEMP_HIGH			0x01
+#define HDC2010_REG_HUMIDITY_LOW		0x02
+#define HDC2010_REG_HUMIDITY_HIGH		0x03
+#define HDC2010_REG_INTERRUPT_DRDY		0x04
+#define HDC2010_REG_TEMP_MAX			0x05
+#define HDC2010_REG_HUMIDITY_MAX		0x06
+#define HDC2010_REG_INTERRUPT_EN		0x07
+#define HDC2010_REG_TEMP_OFFSET_ADJ		0x08
+#define HDC2010_REG_HUMIDITY_OFFSET_ADJ		0x09
+#define HDC2010_REG_TEMP_THR_L			0x0a
+#define HDC2010_REG_TEMP_THR_H			0x0b
+#define HDC2010_REG_RH_THR_L			0x0c
+#define HDC2010_REG_RH_THR_H			0x0d
+#define HDC2010_REG_RESET_DRDY_INT_CONF		0x0e
+#define HDC2010_REG_MEASUREMENT_CONF		0x0f
+
+#define HDC2010_MEAS_CONF			GENMASK(2, 1)
+#define HDC2010_MEAS_TRIG			BIT(0)
+#define HDC2010_HEATER_EN			BIT(3)
+#define HDC2010_AMM				GENMASK(6, 4)
+
+struct hdc2010_data {
+	struct i2c_client *client;
+	struct mutex lock;
+	u8 measurement_config;
+	u8 interrupt_config;
+	u8 drdy_config;
+};
+
+enum hdc2010_addr_groups {
+	HDC2010_GROUP_TEMP = 0,
+	HDC2010_GROUP_HUMIDITY,
+};
+
+struct hdc2010_reg_record {
+	unsigned long primary;
+	unsigned long peak;
+};
+
+static const struct hdc2010_reg_record hdc2010_reg_translation[] = {
+	[HDC2010_GROUP_TEMP] = {
+		.primary = HDC2010_REG_TEMP_LOW,
+		.peak = HDC2010_REG_TEMP_MAX,
+	},
+	[HDC2010_GROUP_HUMIDITY] = {
+		.primary = HDC2010_REG_HUMIDITY_LOW,
+		.peak = HDC2010_REG_HUMIDITY_MAX,
+	},
+};
+
+static IIO_CONST_ATTR(out_current_heater_raw_available, "0 1");
+
+static struct attribute *hdc2010_attributes[] = {
+	&iio_const_attr_out_current_heater_raw_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group hdc2010_attribute_group = {
+	.attrs = hdc2010_attributes,
+};
+
+static const struct iio_chan_spec hdc2010_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.address = HDC2010_GROUP_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_PEAK) |
+			BIT(IIO_CHAN_INFO_OFFSET) |
+			BIT(IIO_CHAN_INFO_SCALE),
+	},
+	{
+		.type = IIO_HUMIDITYRELATIVE,
+		.address = HDC2010_GROUP_HUMIDITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_PEAK) |
+			BIT(IIO_CHAN_INFO_SCALE),
+	},
+	{
+		.type = IIO_CURRENT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.extend_name = "heater",
+		.output = 1,
+	},
+};
+
+static int hdc2010_update_drdy_config(struct hdc2010_data *data,
+					     char mask, char val)
+{
+	u8 tmp = (~mask & data->drdy_config) | val;
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(data->client,
+					HDC2010_REG_RESET_DRDY_INT_CONF, tmp);
+	if (ret)
+		return ret;
+
+	data->drdy_config = tmp;
+
+	return 0;
+}
+
+static int hdc2010_get_prim_measurement_word(struct hdc2010_data *data,
+					     struct iio_chan_spec const *chan)
+{
+	struct i2c_client *client = data->client;
+	s32 ret;
+
+	ret = i2c_smbus_read_word_data(client,
+			hdc2010_reg_translation[chan->address].primary);
+
+	if (ret < 0)
+		dev_err(&client->dev, "Could not read sensor measurement word\n");
+
+	return ret;
+}
+
+static int hdc2010_get_peak_measurement_byte(struct hdc2010_data *data,
+					     struct iio_chan_spec const *chan)
+{
+	struct i2c_client *client = data->client;
+	s32 ret;
+
+	ret = i2c_smbus_read_byte_data(client,
+			hdc2010_reg_translation[chan->address].peak);
+
+	if (ret < 0)
+		dev_err(&client->dev, "Could not read sensor measurement byte\n");
+
+	return ret;
+}
+
+static int hdc2010_get_heater_status(struct hdc2010_data *data)
+{
+	return !!(data->drdy_config & HDC2010_HEATER_EN);
+}
+
+static int hdc2010_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, int *val,
+			    int *val2, long mask)
+{
+	struct hdc2010_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW: {
+		int ret;
+
+		if (chan->type == IIO_CURRENT) {
+			*val = hdc2010_get_heater_status(data);
+			return IIO_VAL_INT;
+		}
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&data->lock);
+		ret = hdc2010_get_prim_measurement_word(data, chan);
+		mutex_unlock(&data->lock);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	}
+	case IIO_CHAN_INFO_PEAK: {
+		int ret;
+
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&data->lock);
+		ret = hdc2010_get_peak_measurement_byte(data, chan);
+		mutex_unlock(&data->lock);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret < 0)
+			return ret;
+		/* Scaling up the value so we can use same offset as RAW */
+		*val = ret * 256;
+		return IIO_VAL_INT;
+	}
+	case IIO_CHAN_INFO_SCALE:
+		*val2 = 65536;
+		if (chan->type == IIO_TEMP)
+			*val = 165000;
+		else
+			*val = 100000;
+		return IIO_VAL_FRACTIONAL;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = -15887;
+		*val2 = 515151;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int hdc2010_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct hdc2010_data *data = iio_priv(indio_dev);
+	int new, ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->type != IIO_CURRENT || val2 != 0)
+			return -EINVAL;
+
+		switch (val) {
+		case 1:
+			new = HDC2010_HEATER_EN;
+			break;
+		case 0:
+			new = 0;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		mutex_lock(&data->lock);
+		ret = hdc2010_update_drdy_config(data, HDC2010_HEATER_EN, new);
+		mutex_unlock(&data->lock);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info hdc2010_info = {
+	.read_raw = hdc2010_read_raw,
+	.write_raw = hdc2010_write_raw,
+	.attrs = &hdc2010_attribute_group,
+};
+
+static int hdc2010_probe(struct i2c_client *client,
+			 const struct i2c_device_id *id)
+{
+	struct iio_dev *indio_dev;
+	struct hdc2010_data *data;
+	u8 tmp;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter,
+	    I2C_FUNC_SMBUS_WORD_DATA | I2C_FUNC_SMBUS_BYTE | I2C_FUNC_I2C))
+		return -EOPNOTSUPP;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+	mutex_init(&data->lock);
+
+	/*
+	 * As DEVICE ID register does not differentiate between
+	 * HDC2010 and HDC2080, we have the name hardcoded
+	 */
+	indio_dev->name = "hdc2010";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &hdc2010_info;
+
+	indio_dev->channels = hdc2010_channels;
+	indio_dev->num_channels = ARRAY_SIZE(hdc2010_channels);
+
+	/* Enable Automatic Measurement Mode at 5Hz */
+	ret = hdc2010_update_drdy_config(data, HDC2010_AMM, HDC2010_AMM);
+	if (ret)
+		return ret;
+
+	/*
+	 * We enable both temp and humidity measurement.
+	 * However the measurement won't start even in AMM until triggered.
+	 */
+	tmp = (data->measurement_config & ~HDC2010_MEAS_CONF) |
+		HDC2010_MEAS_TRIG;
+
+	ret = i2c_smbus_write_byte_data(client, HDC2010_REG_MEASUREMENT_CONF, tmp);
+	if (ret) {
+		dev_warn(&client->dev, "Unable to set up measurement\n");
+		if (hdc2010_update_drdy_config(data, HDC2010_AMM, 0))
+			dev_warn(&client->dev, "Unable to restore default AMM\n");
+		return ret;
+	}
+
+	data->measurement_config = tmp;
+
+	return iio_device_register(indio_dev);
+}
+
+static void hdc2010_remove(struct i2c_client *client)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct hdc2010_data *data = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+
+	/* Disable Automatic Measurement Mode */
+	if (hdc2010_update_drdy_config(data, HDC2010_AMM, 0))
+		dev_warn(&client->dev, "Unable to restore default AMM\n");
+}
+
+static const struct i2c_device_id hdc2010_id[] = {
+	{ "hdc2010" },
+	{ "hdc2080" },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, hdc2010_id);
+
+static const struct of_device_id hdc2010_dt_ids[] = {
+	{ .compatible = "ti,hdc2010" },
+	{ .compatible = "ti,hdc2080" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, hdc2010_dt_ids);
+
+static struct i2c_driver hdc2010_driver = {
+	.driver = {
+		.name	= "hdc2010",
+		.of_match_table = hdc2010_dt_ids,
+	},
+	.probe = hdc2010_probe,
+	.remove = hdc2010_remove,
+	.id_table = hdc2010_id,
+};
+module_i2c_driver(hdc2010_driver);
+
+MODULE_AUTHOR("Eugene Zaikonnikov <ez@norphonic.com>");
+MODULE_DESCRIPTION("TI HDC2010 humidity and temperature sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/humidity/hid-sensor-humidity.c b/drivers/iio/humidity/hid-sensor-humidity.c
index c99b54b0568d..fa0fe404a70a 100644
--- a/drivers/iio/humidity/hid-sensor-humidity.c
+++ b/drivers/iio/humidity/hid-sensor-humidity.c
@@ -7,9 +7,8 @@
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/trigger_consumer.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 
 #include "hid-sensor-trigger.h"
@@ -17,13 +16,20 @@
 struct hid_humidity_state {
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info humidity_attr;
-	s32 humidity_data;
+	struct {
+		s32 humidity_data;
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
 };
 
+static const u32 humidity_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY,
+};
+
 /* Channel definitions */
 static const struct iio_chan_spec humidity_channels[] = {
 	{
@@ -127,9 +133,8 @@ static int humidity_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct hid_humidity_state *humid_st = iio_priv(indio_dev);
 
 	if (atomic_read(&humid_st->common_attributes.data_ready))
-		iio_push_to_buffers_with_timestamp(indio_dev,
-					&humid_st->humidity_data,
-					iio_get_time_ns(indio_dev));
+		iio_push_to_buffers_with_timestamp(indio_dev, &humid_st->scan,
+						   iio_get_time_ns(indio_dev));
 
 	return 0;
 }
@@ -144,7 +149,7 @@ static int humidity_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY:
-		humid_st->humidity_data = *(s32 *)raw_data;
+		humid_st->scan.humidity_data = *(s32 *)raw_data;
 
 		return 0;
 	default:
@@ -176,14 +181,6 @@ static int humidity_parse_report(struct platform_device *pdev,
 						&st->scale_pre_decml,
 						&st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0)
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_ATMOSPHERIC_HUMIDITY,
-			&st->common_attributes.sensitivity);
-
 	return ret;
 }
 
@@ -212,7 +209,9 @@ static int hid_humidity_probe(struct platform_device *pdev)
 
 	ret = hid_sensor_parse_common_attributes(hsdev,
 					HID_USAGE_SENSOR_HUMIDITY,
-					&humid_st->common_attributes);
+					&humid_st->common_attributes,
+					humidity_sensitivity_addresses,
+					ARRAY_SIZE(humidity_sensitivity_addresses));
 	if (ret)
 		return ret;
 
@@ -228,17 +227,12 @@ static int hid_humidity_probe(struct platform_device *pdev)
 
 	indio_dev->channels = humid_chans;
 	indio_dev->num_channels = ARRAY_SIZE(humidity_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &humidity_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev,
-					&iio_pollfunc_store_time, NULL, NULL);
-	if (ret)
-		return ret;
-
 	atomic_set(&humid_st->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&humid_st->common_attributes);
 	if (ret)
@@ -261,7 +255,7 @@ static int hid_humidity_probe(struct platform_device *pdev)
 error_remove_callback:
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&humid_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &humid_st->common_attributes);
 	return ret;
 }
 
@@ -274,7 +268,7 @@ static int hid_humidity_remove(struct platform_device *pdev)
 
 	iio_device_unregister(indio_dev);
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_HUMIDITY);
-	hid_sensor_remove_trigger(&humid_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &humid_st->common_attributes);
 
 	return 0;
 }
@@ -302,3 +296,4 @@ module_platform_driver(hid_humidity_platform_driver);
 MODULE_DESCRIPTION("HID Environmental humidity sensor");
 MODULE_AUTHOR("Song Hongyan <hongyan.song@intel.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/humidity/hts221.h b/drivers/iio/humidity/hts221.h
index 7d6771f7cf47..cf3d8d2dccd6 100644
--- a/drivers/iio/humidity/hts221.h
+++ b/drivers/iio/humidity/hts221.h
@@ -13,8 +13,7 @@
 #define HTS221_DEV_NAME		"hts221"
 
 #include <linux/iio/iio.h>
-
-#define HTS221_DATA_SIZE	2
+#include <linux/regulator/consumer.h>
 
 enum hts221_sensor_type {
 	HTS221_SENSOR_H,
@@ -31,6 +30,7 @@ struct hts221_hw {
 	const char *name;
 	struct device *dev;
 	struct regmap *regmap;
+	struct regulator *vdd;
 
 	struct iio_trigger *trig;
 	int irq;
@@ -39,6 +39,11 @@ struct hts221_hw {
 
 	bool enabled;
 	u8 odr;
+	/* Ensure natural alignment of timestamp */
+	struct {
+		__le16 channels[2];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 extern const struct dev_pm_ops hts221_pm_ops;
@@ -46,7 +51,7 @@ extern const struct dev_pm_ops hts221_pm_ops;
 int hts221_probe(struct device *dev, int irq, const char *name,
 		 struct regmap *regmap);
 int hts221_set_enable(struct hts221_hw *hw, bool enable);
-int hts221_allocate_buffers(struct hts221_hw *hw);
-int hts221_allocate_trigger(struct hts221_hw *hw);
+int hts221_allocate_buffers(struct iio_dev *iio_dev);
+int hts221_allocate_trigger(struct iio_dev *iio_dev);
 
 #endif /* HTS221_H */
diff --git a/drivers/iio/humidity/hts221_buffer.c b/drivers/iio/humidity/hts221_buffer.c
index 81d50a861c22..2a4107a79662 100644
--- a/drivers/iio/humidity/hts221_buffer.c
+++ b/drivers/iio/humidity/hts221_buffer.c
@@ -11,6 +11,7 @@
 #include <linux/device.h>
 #include <linux/interrupt.h>
 #include <linux/irqreturn.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/bitfield.h>
 
@@ -72,12 +73,11 @@ static irqreturn_t hts221_trigger_handler_thread(int irq, void *private)
 	return IRQ_HANDLED;
 }
 
-int hts221_allocate_trigger(struct hts221_hw *hw)
+int hts221_allocate_trigger(struct iio_dev *iio_dev)
 {
-	struct iio_dev *iio_dev = iio_priv_to_dev(hw);
+	struct hts221_hw *hw = iio_priv(iio_dev);
+	struct st_sensors_platform_data *pdata = dev_get_platdata(hw->dev);
 	bool irq_active_low = false, open_drain = false;
-	struct device_node *np = hw->dev->of_node;
-	struct st_sensors_platform_data *pdata;
 	unsigned long irq_type;
 	int err;
 
@@ -106,8 +106,7 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
 	if (err < 0)
 		return err;
 
-	pdata = (struct st_sensors_platform_data *)hw->dev->platform_data;
-	if ((np && of_property_read_bool(np, "drive-open-drain")) ||
+	if (device_property_read_bool(hw->dev, "drive-open-drain") ||
 	    (pdata && pdata->open_drain)) {
 		irq_type |= IRQF_SHARED;
 		open_drain = true;
@@ -137,10 +136,12 @@ int hts221_allocate_trigger(struct hts221_hw *hw)
 
 	iio_trigger_set_drvdata(hw->trig, iio_dev);
 	hw->trig->ops = &hts221_trigger_ops;
-	hw->trig->dev.parent = hw->dev;
+
+	err = devm_iio_trigger_register(hw->dev, hw->trig);
+
 	iio_dev->trig = iio_trigger_get(hw->trig);
 
-	return devm_iio_trigger_register(hw->dev, hw->trig);
+	return err;
 }
 
 static int hts221_buffer_preenable(struct iio_dev *iio_dev)
@@ -155,14 +156,11 @@ static int hts221_buffer_postdisable(struct iio_dev *iio_dev)
 
 static const struct iio_buffer_setup_ops hts221_buffer_ops = {
 	.preenable = hts221_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = hts221_buffer_postdisable,
 };
 
 static irqreturn_t hts221_buffer_handler_thread(int irq, void *p)
 {
-	u8 buffer[ALIGN(2 * HTS221_DATA_SIZE, sizeof(s64)) + sizeof(s64)];
 	struct iio_poll_func *pf = p;
 	struct iio_dev *iio_dev = pf->indio_dev;
 	struct hts221_hw *hw = iio_priv(iio_dev);
@@ -172,18 +170,20 @@ static irqreturn_t hts221_buffer_handler_thread(int irq, void *p)
 	/* humidity data */
 	ch = &iio_dev->channels[HTS221_SENSOR_H];
 	err = regmap_bulk_read(hw->regmap, ch->address,
-			       buffer, HTS221_DATA_SIZE);
+			       &hw->scan.channels[0],
+			       sizeof(hw->scan.channels[0]));
 	if (err < 0)
 		goto out;
 
 	/* temperature data */
 	ch = &iio_dev->channels[HTS221_SENSOR_T];
 	err = regmap_bulk_read(hw->regmap, ch->address,
-			       buffer + HTS221_DATA_SIZE, HTS221_DATA_SIZE);
+			       &hw->scan.channels[1],
+			       sizeof(hw->scan.channels[1]));
 	if (err < 0)
 		goto out;
 
-	iio_push_to_buffers_with_timestamp(iio_dev, buffer,
+	iio_push_to_buffers_with_timestamp(iio_dev, &hw->scan,
 					   iio_get_time_ns(iio_dev));
 
 out:
@@ -192,9 +192,10 @@ out:
 	return IRQ_HANDLED;
 }
 
-int hts221_allocate_buffers(struct hts221_hw *hw)
+int hts221_allocate_buffers(struct iio_dev *iio_dev)
 {
-	return devm_iio_triggered_buffer_setup(hw->dev, iio_priv_to_dev(hw),
+	struct hts221_hw *hw = iio_priv(iio_dev);
+	return devm_iio_triggered_buffer_setup(hw->dev, iio_dev,
 					NULL, hts221_buffer_handler_thread,
 					&hts221_buffer_ops);
 }
diff --git a/drivers/iio/humidity/hts221_core.c b/drivers/iio/humidity/hts221_core.c
index 9003671f14fb..517158307d8c 100644
--- a/drivers/iio/humidity/hts221_core.c
+++ b/drivers/iio/humidity/hts221_core.c
@@ -547,6 +547,35 @@ static const struct iio_info hts221_info = {
 
 static const unsigned long hts221_scan_masks[] = {0x3, 0x0};
 
+static int hts221_init_regulators(struct device *dev)
+{
+	struct iio_dev *iio_dev = dev_get_drvdata(dev);
+	struct hts221_hw *hw = iio_priv(iio_dev);
+	int err;
+
+	hw->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(hw->vdd))
+		return dev_err_probe(dev, PTR_ERR(hw->vdd),
+				     "failed to get vdd regulator\n");
+
+	err = regulator_enable(hw->vdd);
+	if (err) {
+		dev_err(dev, "failed to enable vdd regulator: %d\n", err);
+		return err;
+	}
+
+	msleep(50);
+
+	return 0;
+}
+
+static void hts221_chip_uninit(void *data)
+{
+	struct hts221_hw *hw = data;
+
+	regulator_disable(hw->vdd);
+}
+
 int hts221_probe(struct device *dev, int irq, const char *name,
 		 struct regmap *regmap)
 {
@@ -567,12 +596,19 @@ int hts221_probe(struct device *dev, int irq, const char *name,
 	hw->irq = irq;
 	hw->regmap = regmap;
 
+	err = hts221_init_regulators(dev);
+	if (err)
+		return err;
+
+	err = devm_add_action_or_reset(dev, hts221_chip_uninit, hw);
+	if (err)
+		return err;
+
 	err = hts221_check_whoami(hw);
 	if (err < 0)
 		return err;
 
 	iio_dev->modes = INDIO_DIRECT_MODE;
-	iio_dev->dev.parent = hw->dev;
 	iio_dev->available_scan_masks = hts221_scan_masks;
 	iio_dev->channels = hts221_channels;
 	iio_dev->num_channels = ARRAY_SIZE(hts221_channels);
@@ -621,20 +657,20 @@ int hts221_probe(struct device *dev, int irq, const char *name,
 	}
 
 	if (hw->irq > 0) {
-		err = hts221_allocate_buffers(hw);
+		err = hts221_allocate_buffers(iio_dev);
 		if (err < 0)
 			return err;
 
-		err = hts221_allocate_trigger(hw);
+		err = hts221_allocate_trigger(iio_dev);
 		if (err)
 			return err;
 	}
 
 	return devm_iio_device_register(hw->dev, iio_dev);
 }
-EXPORT_SYMBOL(hts221_probe);
+EXPORT_SYMBOL_NS(hts221_probe, IIO_HTS221);
 
-static int __maybe_unused hts221_suspend(struct device *dev)
+static int hts221_suspend(struct device *dev)
 {
 	struct iio_dev *iio_dev = dev_get_drvdata(dev);
 	struct hts221_hw *hw = iio_priv(iio_dev);
@@ -644,7 +680,7 @@ static int __maybe_unused hts221_suspend(struct device *dev)
 				  FIELD_PREP(HTS221_ENABLE_MASK, false));
 }
 
-static int __maybe_unused hts221_resume(struct device *dev)
+static int hts221_resume(struct device *dev)
 {
 	struct iio_dev *iio_dev = dev_get_drvdata(dev);
 	struct hts221_hw *hw = iio_priv(iio_dev);
@@ -658,10 +694,8 @@ static int __maybe_unused hts221_resume(struct device *dev)
 	return err;
 }
 
-const struct dev_pm_ops hts221_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(hts221_suspend, hts221_resume)
-};
-EXPORT_SYMBOL(hts221_pm_ops);
+EXPORT_NS_SIMPLE_DEV_PM_OPS(hts221_pm_ops, hts221_suspend, hts221_resume,
+			    IIO_HTS221);
 
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics hts221 sensor driver");
diff --git a/drivers/iio/humidity/hts221_i2c.c b/drivers/iio/humidity/hts221_i2c.c
index 4272b7030c44..afbc611f7712 100644
--- a/drivers/iio/humidity/hts221_i2c.c
+++ b/drivers/iio/humidity/hts221_i2c.c
@@ -32,8 +32,8 @@ static int hts221_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &hts221_i2c_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap %ld\n",
+			PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -62,8 +62,8 @@ MODULE_DEVICE_TABLE(i2c, hts221_i2c_id_table);
 static struct i2c_driver hts221_driver = {
 	.driver = {
 		.name = "hts221_i2c",
-		.pm = &hts221_pm_ops,
-		.of_match_table = of_match_ptr(hts221_i2c_of_match),
+		.pm = pm_sleep_ptr(&hts221_pm_ops),
+		.of_match_table = hts221_i2c_of_match,
 		.acpi_match_table = ACPI_PTR(hts221_acpi_match),
 	},
 	.probe = hts221_i2c_probe,
@@ -74,3 +74,4 @@ module_i2c_driver(hts221_driver);
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics hts221 i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_HTS221);
diff --git a/drivers/iio/humidity/hts221_spi.c b/drivers/iio/humidity/hts221_spi.c
index 055dba8897d2..fc4adb68faf6 100644
--- a/drivers/iio/humidity/hts221_spi.c
+++ b/drivers/iio/humidity/hts221_spi.c
@@ -31,8 +31,8 @@ static int hts221_spi_probe(struct spi_device *spi)
 
 	regmap = devm_regmap_init_spi(spi, &hts221_spi_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap %ld\n",
+			PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -55,8 +55,8 @@ MODULE_DEVICE_TABLE(spi, hts221_spi_id_table);
 static struct spi_driver hts221_driver = {
 	.driver = {
 		.name = "hts221_spi",
-		.pm = &hts221_pm_ops,
-		.of_match_table = of_match_ptr(hts221_spi_of_match),
+		.pm = pm_sleep_ptr(&hts221_pm_ops),
+		.of_match_table = hts221_spi_of_match,
 	},
 	.probe = hts221_spi_probe,
 	.id_table = hts221_spi_id_table,
@@ -66,3 +66,4 @@ module_spi_driver(hts221_driver);
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics hts221 spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_HTS221);
diff --git a/drivers/iio/humidity/htu21.c b/drivers/iio/humidity/htu21.c
index d4c0589844dd..fd9e2565f8a2 100644
--- a/drivers/iio/humidity/htu21.c
+++ b/drivers/iio/humidity/htu21.c
@@ -19,6 +19,7 @@
 #include <linux/kernel.h>
 #include <linux/stat.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
@@ -204,7 +205,6 @@ static int htu21_probe(struct i2c_client *client,
 
 	indio_dev->info = &htu21_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	if (id->driver_data == MS8607) {
@@ -248,7 +248,7 @@ static struct i2c_driver htu21_driver = {
 	.id_table = htu21_id,
 	.driver = {
 		   .name = "htu21",
-		   .of_match_table = of_match_ptr(htu21_of_match),
+		   .of_match_table = htu21_of_match,
 		   },
 };
 
@@ -258,3 +258,4 @@ MODULE_DESCRIPTION("Measurement-Specialties htu21 temperature and humidity drive
 MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
 MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);
diff --git a/drivers/iio/humidity/si7005.c b/drivers/iio/humidity/si7005.c
index d5aef0bfef01..160b3d92df61 100644
--- a/drivers/iio/humidity/si7005.c
+++ b/drivers/iio/humidity/si7005.c
@@ -142,7 +142,6 @@ static int si7005_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &si7005_info;
diff --git a/drivers/iio/humidity/si7020.c b/drivers/iio/humidity/si7020.c
index b938f07eed64..ab6537f136ba 100644
--- a/drivers/iio/humidity/si7020.c
+++ b/drivers/iio/humidity/si7020.c
@@ -20,6 +20,7 @@
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 
@@ -128,7 +129,6 @@ static int si7020_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	*data = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &si7020_info;
@@ -154,7 +154,7 @@ MODULE_DEVICE_TABLE(of, si7020_dt_ids);
 static struct i2c_driver si7020_driver = {
 	.driver = {
 		.name = "si7020",
-		.of_match_table = of_match_ptr(si7020_dt_ids),
+		.of_match_table = si7020_dt_ids,
 	},
 	.probe		= si7020_probe,
 	.id_table	= si7020_id,
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h
index fd9a5f1d5e51..501e286702ef 100644
--- a/drivers/iio/iio_core.h
+++ b/drivers/iio/iio_core.h
@@ -12,10 +12,30 @@
 #include <linux/kernel.h>
 #include <linux/device.h>
 
+struct iio_buffer;
 struct iio_chan_spec;
 struct iio_dev;
 
-extern struct device_type iio_device_type;
+extern const struct device_type iio_device_type;
+
+struct iio_dev_buffer_pair {
+	struct iio_dev		*indio_dev;
+	struct iio_buffer	*buffer;
+};
+
+#define IIO_IOCTL_UNHANDLED	1
+struct iio_ioctl_handler {
+	struct list_head entry;
+	long (*ioctl)(struct iio_dev *indio_dev, struct file *filp,
+		      unsigned int cmd, unsigned long arg);
+};
+
+long iio_device_ioctl(struct iio_dev *indio_dev, struct file *filp,
+		      unsigned int cmd, unsigned long arg);
+
+void iio_device_ioctl_handler_register(struct iio_dev *indio_dev,
+				       struct iio_ioctl_handler *h);
+void iio_device_ioctl_handler_unregister(struct iio_ioctl_handler *h);
 
 int __iio_add_chan_devattr(const char *postfix,
 			   struct iio_chan_spec const *chan,
@@ -29,9 +49,13 @@ int __iio_add_chan_devattr(const char *postfix,
 			   u64 mask,
 			   enum iio_shared_by shared_by,
 			   struct device *dev,
+			   struct iio_buffer *buffer,
 			   struct list_head *attr_list);
 void iio_free_chan_devattr_list(struct list_head *attr_list);
 
+int iio_device_register_sysfs_group(struct iio_dev *indio_dev,
+				    const struct attribute_group *group);
+
 ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
 
 /* Event interface flags */
@@ -40,41 +64,46 @@ ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals);
 #ifdef CONFIG_IIO_BUFFER
 struct poll_table_struct;
 
-__poll_t iio_buffer_poll(struct file *filp,
-			     struct poll_table_struct *wait);
-ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
-			      size_t n, loff_t *f_ps);
+__poll_t iio_buffer_poll_wrapper(struct file *filp,
+				 struct poll_table_struct *wait);
+ssize_t iio_buffer_read_wrapper(struct file *filp, char __user *buf,
+				size_t n, loff_t *f_ps);
+ssize_t iio_buffer_write_wrapper(struct file *filp, const char __user *buf,
+				 size_t n, loff_t *f_ps);
 
-int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
-void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev);
+int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev);
+void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev);
 
-#define iio_buffer_poll_addr (&iio_buffer_poll)
-#define iio_buffer_read_outer_addr (&iio_buffer_read_outer)
+#define iio_buffer_poll_addr (&iio_buffer_poll_wrapper)
+#define iio_buffer_read_outer_addr (&iio_buffer_read_wrapper)
+#define iio_buffer_write_outer_addr (&iio_buffer_write_wrapper)
 
 void iio_disable_all_buffers(struct iio_dev *indio_dev);
 void iio_buffer_wakeup_poll(struct iio_dev *indio_dev);
+void iio_device_detach_buffers(struct iio_dev *indio_dev);
 
 #else
 
 #define iio_buffer_poll_addr NULL
 #define iio_buffer_read_outer_addr NULL
+#define iio_buffer_write_outer_addr NULL
 
-static inline int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
+static inline int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
 {
 	return 0;
 }
 
-static inline void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
+static inline void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev) {}
 
 static inline void iio_disable_all_buffers(struct iio_dev *indio_dev) {}
 static inline void iio_buffer_wakeup_poll(struct iio_dev *indio_dev) {}
+static inline void iio_device_detach_buffers(struct iio_dev *indio_dev) {}
 
 #endif
 
 int iio_device_register_eventset(struct iio_dev *indio_dev);
 void iio_device_unregister_eventset(struct iio_dev *indio_dev);
 void iio_device_wakeup_eventset(struct iio_dev *indio_dev);
-int iio_event_getfd(struct iio_dev *indio_dev);
 
 struct iio_event_interface;
 bool iio_event_enabled(const struct iio_event_interface *ev_int);
diff --git a/drivers/iio/iio_core_trigger.h b/drivers/iio/iio_core_trigger.h
index e59fe2f36bbb..e1a56824e07f 100644
--- a/drivers/iio/iio_core_trigger.h
+++ b/drivers/iio/iio_core_trigger.h
@@ -9,8 +9,10 @@
 /**
  * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
  * @indio_dev: iio_dev associated with the device that will consume the trigger
+ *
+ * Return 0 if successful, negative otherwise
  **/
-void iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
+int iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
 
 /**
  * iio_device_unregister_trigger_consumer() - reverse the registration process
@@ -18,13 +20,19 @@ void iio_device_register_trigger_consumer(struct iio_dev *indio_dev);
  **/
 void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev);
 
+
+int iio_trigger_attach_poll_func(struct iio_trigger *trig,
+				 struct iio_poll_func *pf);
+int iio_trigger_detach_poll_func(struct iio_trigger *trig,
+				 struct iio_poll_func *pf);
+
 #else
 
 /**
  * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
  * @indio_dev: iio_dev associated with the device that will consume the trigger
  **/
-static int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
+static inline int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
 {
 	return 0;
 }
@@ -33,8 +41,19 @@ static int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
  * iio_device_unregister_trigger_consumer() - reverse the registration process
  * @indio_dev: iio_dev associated with the device that consumed the trigger
  **/
-static void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
+static inline void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
+{
+}
+
+static inline int iio_trigger_attach_poll_func(struct iio_trigger *trig,
+					       struct iio_poll_func *pf)
 {
+	return 0;
+}
+static inline int iio_trigger_detach_poll_func(struct iio_trigger *trig,
+					       struct iio_poll_func *pf)
+{
+	return 0;
 }
 
 #endif /* CONFIG_TRIGGER_CONSUMER */
diff --git a/drivers/iio/imu/Kconfig b/drivers/iio/imu/Kconfig
index 60bb1029e759..f1d7d4b5e222 100644
--- a/drivers/iio/imu/Kconfig
+++ b/drivers/iio/imu/Kconfig
@@ -29,6 +29,19 @@ config ADIS16460
 	  To compile this driver as a module, choose M here: the module will be
 	  called adis16460.
 
+config ADIS16475
+	tristate "Analog Devices ADIS16475 and similar IMU driver"
+	depends on SPI
+	select IIO_ADIS_LIB
+	select IIO_ADIS_LIB_BUFFER if IIO_BUFFER
+	help
+	  Say yes here to build support for Analog Devices ADIS16470, ADIS16475,
+	  ADIS16477, ADIS16465, ADIS16467, ADIS16500, ADIS16505, ADIS16507 inertial
+	  sensors.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called adis16475.
+
 config ADIS16480
 	tristate "Analog Devices ADIS16480 and similar IMU driver"
 	depends on SPI
@@ -39,6 +52,7 @@ config ADIS16480
 	  ADIS16485, ADIS16488 inertial sensors.
 
 source "drivers/iio/imu/bmi160/Kconfig"
+source "drivers/iio/imu/bno055/Kconfig"
 
 config FXOS8700
 	tristate
@@ -78,8 +92,10 @@ config KMX61
 	  To compile this driver as module, choose M here: the module will
 	  be called kmx61.
 
+source "drivers/iio/imu/inv_icm42600/Kconfig"
 source "drivers/iio/imu/inv_mpu6050/Kconfig"
 source "drivers/iio/imu/st_lsm6dsx/Kconfig"
+source "drivers/iio/imu/st_lsm9ds0/Kconfig"
 
 endmenu
 
diff --git a/drivers/iio/imu/Makefile b/drivers/iio/imu/Makefile
index 5237fd4bc384..6eb612034722 100644
--- a/drivers/iio/imu/Makefile
+++ b/drivers/iio/imu/Makefile
@@ -6,6 +6,7 @@
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_ADIS16400) += adis16400.o
 obj-$(CONFIG_ADIS16460) += adis16460.o
+obj-$(CONFIG_ADIS16475) += adis16475.o
 obj-$(CONFIG_ADIS16480) += adis16480.o
 
 adis_lib-y += adis.o
@@ -14,13 +15,16 @@ adis_lib-$(CONFIG_IIO_ADIS_LIB_BUFFER) += adis_buffer.o
 obj-$(CONFIG_IIO_ADIS_LIB) += adis_lib.o
 
 obj-y += bmi160/
+obj-y += bno055/
 
 obj-$(CONFIG_FXOS8700) += fxos8700_core.o
 obj-$(CONFIG_FXOS8700_I2C) += fxos8700_i2c.o
 obj-$(CONFIG_FXOS8700_SPI) += fxos8700_spi.o
 
+obj-y += inv_icm42600/
 obj-y += inv_mpu6050/
 
 obj-$(CONFIG_KMX61) += kmx61.o
 
 obj-y += st_lsm6dsx/
+obj-y += st_lsm9ds0/
diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
index 022bb54fb748..f7fcfd04f659 100644
--- a/drivers/iio/imu/adis.c
+++ b/drivers/iio/imu/adis.c
@@ -7,18 +7,15 @@
  */
 
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
 #include <linux/module.h>
 #include <asm/unaligned.h>
 
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
 #include <linux/iio/imu/adis.h>
 
 #define ADIS_MSC_CTRL_DATA_RDY_EN	BIT(2)
@@ -33,8 +30,8 @@
  * @value: The value to write to device (up to 4 bytes)
  * @size: The size of the @value (in bytes)
  */
-int __adis_write_reg(struct adis *adis, unsigned int reg,
-	unsigned int value, unsigned int size)
+int __adis_write_reg(struct adis *adis, unsigned int reg, unsigned int value,
+		     unsigned int size)
 {
 	unsigned int page = reg / ADIS_PAGE_SIZE;
 	int ret, i;
@@ -96,11 +93,11 @@ int __adis_write_reg(struct adis *adis, unsigned int reg,
 		adis->tx[9] = (value >> 24) & 0xff;
 		adis->tx[6] = ADIS_WRITE_REG(reg + 2);
 		adis->tx[7] = (value >> 16) & 0xff;
-		/* fall through */
+		fallthrough;
 	case 2:
 		adis->tx[4] = ADIS_WRITE_REG(reg + 1);
 		adis->tx[5] = (value >> 8) & 0xff;
-		/* fall through */
+		fallthrough;
 	case 1:
 		adis->tx[2] = ADIS_WRITE_REG(reg);
 		adis->tx[3] = value & 0xff;
@@ -117,14 +114,14 @@ int __adis_write_reg(struct adis *adis, unsigned int reg,
 	ret = spi_sync(adis->spi, &msg);
 	if (ret) {
 		dev_err(&adis->spi->dev, "Failed to write register 0x%02X: %d\n",
-				reg, ret);
+			reg, ret);
 	} else {
 		adis->current_page = page;
 	}
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(__adis_write_reg);
+EXPORT_SYMBOL_NS_GPL(__adis_write_reg, IIO_ADISLIB);
 
 /**
  * __adis_read_reg() - read N bytes from register (unlocked version)
@@ -133,8 +130,8 @@ EXPORT_SYMBOL_GPL(__adis_write_reg);
  * @val: The value read back from the device
  * @size: The size of the @val buffer
  */
-int __adis_read_reg(struct adis *adis, unsigned int reg,
-	unsigned int *val, unsigned int size)
+int __adis_read_reg(struct adis *adis, unsigned int reg, unsigned int *val,
+		    unsigned int size)
 {
 	unsigned int page = reg / ADIS_PAGE_SIZE;
 	struct spi_message msg;
@@ -190,7 +187,7 @@ int __adis_read_reg(struct adis *adis, unsigned int reg,
 		adis->tx[2] = ADIS_READ_REG(reg + 2);
 		adis->tx[3] = 0;
 		spi_message_add_tail(&xfers[1], &msg);
-		/* fall through */
+		fallthrough;
 	case 2:
 		adis->tx[4] = ADIS_READ_REG(reg);
 		adis->tx[5] = 0;
@@ -204,12 +201,12 @@ int __adis_read_reg(struct adis *adis, unsigned int reg,
 	ret = spi_sync(adis->spi, &msg);
 	if (ret) {
 		dev_err(&adis->spi->dev, "Failed to read register 0x%02X: %d\n",
-				reg, ret);
+			reg, ret);
 		return ret;
-	} else {
-		adis->current_page = page;
 	}
 
+	adis->current_page = page;
+
 	switch (size) {
 	case 4:
 		*val = get_unaligned_be32(adis->rx);
@@ -221,17 +218,42 @@ int __adis_read_reg(struct adis *adis, unsigned int reg,
 
 	return ret;
 }
-EXPORT_SYMBOL_GPL(__adis_read_reg);
+EXPORT_SYMBOL_NS_GPL(__adis_read_reg, IIO_ADISLIB);
+/**
+ * __adis_update_bits_base() - ADIS Update bits function - Unlocked version
+ * @adis: The adis device
+ * @reg: The address of the lower of the two registers
+ * @mask: Bitmask to change
+ * @val: Value to be written
+ * @size: Size of the register to update
+ *
+ * Updates the desired bits of @reg in accordance with @mask and @val.
+ */
+int __adis_update_bits_base(struct adis *adis, unsigned int reg, const u32 mask,
+			    const u32 val, u8 size)
+{
+	int ret;
+	u32 __val;
+
+	ret = __adis_read_reg(adis, reg, &__val, size);
+	if (ret)
+		return ret;
+
+	__val = (__val & ~mask) | (val & mask);
+
+	return __adis_write_reg(adis, reg, __val, size);
+}
+EXPORT_SYMBOL_NS_GPL(__adis_update_bits_base, IIO_ADISLIB);
 
 #ifdef CONFIG_DEBUG_FS
 
-int adis_debugfs_reg_access(struct iio_dev *indio_dev,
-	unsigned int reg, unsigned int writeval, unsigned int *readval)
+int adis_debugfs_reg_access(struct iio_dev *indio_dev, unsigned int reg,
+			    unsigned int writeval, unsigned int *readval)
 {
 	struct adis *adis = iio_device_get_drvdata(indio_dev);
 
 	if (readval) {
-		uint16_t val16;
+		u16 val16;
 		int ret;
 
 		ret = adis_read_reg_16(adis, reg, &val16);
@@ -239,11 +261,11 @@ int adis_debugfs_reg_access(struct iio_dev *indio_dev,
 			*readval = val16;
 
 		return ret;
-	} else {
-		return adis_write_reg_16(adis, reg, writeval);
 	}
+
+	return adis_write_reg_16(adis, reg, writeval);
 }
-EXPORT_SYMBOL(adis_debugfs_reg_access);
+EXPORT_SYMBOL_NS(adis_debugfs_reg_access, IIO_ADISLIB);
 
 #endif
 
@@ -257,7 +279,7 @@ EXPORT_SYMBOL(adis_debugfs_reg_access);
 int adis_enable_irq(struct adis *adis, bool enable)
 {
 	int ret = 0;
-	uint16_t msc;
+	u16 msc;
 
 	mutex_lock(&adis->state_lock);
 
@@ -266,6 +288,15 @@ int adis_enable_irq(struct adis *adis, bool enable)
 		goto out_unlock;
 	}
 
+	if (adis->data->unmasked_drdy) {
+		if (enable)
+			enable_irq(adis->spi->irq);
+		else
+			disable_irq(adis->spi->irq);
+
+		goto out_unlock;
+	}
+
 	ret = __adis_read_reg_16(adis, adis->data->msc_ctrl_reg, &msc);
 	if (ret)
 		goto out_unlock;
@@ -283,7 +314,7 @@ out_unlock:
 	mutex_unlock(&adis->state_lock);
 	return ret;
 }
-EXPORT_SYMBOL(adis_enable_irq);
+EXPORT_SYMBOL_NS(adis_enable_irq, IIO_ADISLIB);
 
 /**
  * __adis_check_status() - Check the device for error conditions (unlocked)
@@ -293,7 +324,7 @@ EXPORT_SYMBOL(adis_enable_irq);
  */
 int __adis_check_status(struct adis *adis)
 {
-	uint16_t status;
+	u16 status;
 	int ret;
 	int i;
 
@@ -315,7 +346,7 @@ int __adis_check_status(struct adis *adis)
 
 	return -EIO;
 }
-EXPORT_SYMBOL_GPL(__adis_check_status);
+EXPORT_SYMBOL_NS_GPL(__adis_check_status, IIO_ADISLIB);
 
 /**
  * __adis_reset() - Reset the device (unlocked version)
@@ -329,7 +360,7 @@ int __adis_reset(struct adis *adis)
 	const struct adis_timeout *timeouts = adis->data->timeouts;
 
 	ret = __adis_write_reg_8(adis, adis->data->glob_cmd_reg,
-			ADIS_GLOB_CMD_SW_RESET);
+				 ADIS_GLOB_CMD_SW_RESET);
 	if (ret) {
 		dev_err(&adis->spi->dev, "Failed to reset device: %d\n", ret);
 		return ret;
@@ -339,15 +370,15 @@ int __adis_reset(struct adis *adis)
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(__adis_reset);
+EXPORT_SYMBOL_NS_GPL(__adis_reset, IIO_ADIS_LIB);
 
 static int adis_self_test(struct adis *adis)
 {
 	int ret;
 	const struct adis_timeout *timeouts = adis->data->timeouts;
 
-	ret = __adis_write_reg_16(adis, adis->data->msc_ctrl_reg,
-			adis->data->self_test_mask);
+	ret = __adis_write_reg_16(adis, adis->data->self_test_reg,
+				  adis->data->self_test_mask);
 	if (ret) {
 		dev_err(&adis->spi->dev, "Failed to initiate self test: %d\n",
 			ret);
@@ -359,42 +390,78 @@ static int adis_self_test(struct adis *adis)
 	ret = __adis_check_status(adis);
 
 	if (adis->data->self_test_no_autoclear)
-		__adis_write_reg_16(adis, adis->data->msc_ctrl_reg, 0x00);
+		__adis_write_reg_16(adis, adis->data->self_test_reg, 0x00);
 
 	return ret;
 }
 
 /**
- * adis_inital_startup() - Performs device self-test
+ * __adis_initial_startup() - Device initial setup
  * @adis: The adis device
  *
+ * The function performs a HW reset via a reset pin that should be specified
+ * via GPIOLIB. If no pin is configured a SW reset will be performed.
+ * The RST pin for the ADIS devices should be configured as ACTIVE_LOW.
+ *
+ * After the self-test operation is performed, the function will also check
+ * that the product ID is as expected. This assumes that drivers providing
+ * 'prod_id_reg' will also provide the 'prod_id'.
+ *
  * Returns 0 if the device is operational, a negative error code otherwise.
  *
  * This function should be called early on in the device initialization sequence
  * to ensure that the device is in a sane and known state and that it is usable.
  */
-int adis_initial_startup(struct adis *adis)
+int __adis_initial_startup(struct adis *adis)
 {
+	const struct adis_timeout *timeouts = adis->data->timeouts;
+	struct gpio_desc *gpio;
+	u16 prod_id;
 	int ret;
 
-	mutex_lock(&adis->state_lock);
+	/* check if the device has rst pin low */
+	gpio = devm_gpiod_get_optional(&adis->spi->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio))
+		return PTR_ERR(gpio);
 
-	ret = adis_self_test(adis);
-	if (ret) {
-		dev_err(&adis->spi->dev, "Self-test failed, trying reset.\n");
-		__adis_reset(adis);
-		ret = adis_self_test(adis);
-		if (ret) {
-			dev_err(&adis->spi->dev, "Second self-test failed, giving up.\n");
-			goto out_unlock;
-		}
+	if (gpio) {
+		usleep_range(10, 12);
+		/* bring device out of reset */
+		gpiod_set_value_cansleep(gpio, 0);
+		msleep(timeouts->reset_ms);
+	} else {
+		ret = __adis_reset(adis);
+		if (ret)
+			return ret;
 	}
 
-out_unlock:
-	mutex_unlock(&adis->state_lock);
-	return ret;
+	ret = adis_self_test(adis);
+	if (ret)
+		return ret;
+
+	/*
+	 * don't bother calling this if we can't unmask the IRQ as in this case
+	 * the IRQ is most likely not yet requested and we will request it
+	 * with 'IRQF_NO_AUTOEN' anyways.
+	 */
+	if (!adis->data->unmasked_drdy)
+		adis_enable_irq(adis, false);
+
+	if (!adis->data->prod_id_reg)
+		return 0;
+
+	ret = adis_read_reg_16(adis, adis->data->prod_id_reg, &prod_id);
+	if (ret)
+		return ret;
+
+	if (prod_id != adis->data->prod_id)
+		dev_warn(&adis->spi->dev,
+			 "Device ID(%u) and product ID(%u) do not match.\n",
+			 adis->data->prod_id, prod_id);
+
+	return 0;
 }
-EXPORT_SYMBOL_GPL(adis_initial_startup);
+EXPORT_SYMBOL_NS_GPL(__adis_initial_startup, IIO_ADISLIB);
 
 /**
  * adis_single_conversion() - Performs a single sample conversion
@@ -412,7 +479,8 @@ EXPORT_SYMBOL_GPL(adis_initial_startup);
  * a error bit in the channels raw value set error_mask to 0.
  */
 int adis_single_conversion(struct iio_dev *indio_dev,
-	const struct iio_chan_spec *chan, unsigned int error_mask, int *val)
+			   const struct iio_chan_spec *chan,
+			   unsigned int error_mask, int *val)
 {
 	struct adis *adis = iio_device_get_drvdata(indio_dev);
 	unsigned int uval;
@@ -421,7 +489,7 @@ int adis_single_conversion(struct iio_dev *indio_dev,
 	mutex_lock(&adis->state_lock);
 
 	ret = __adis_read_reg(adis, chan->address, &uval,
-			chan->scan_type.storagebits / 8);
+			      chan->scan_type.storagebits / 8);
 	if (ret)
 		goto err_unlock;
 
@@ -441,7 +509,7 @@ err_unlock:
 	mutex_unlock(&adis->state_lock);
 	return ret;
 }
-EXPORT_SYMBOL_GPL(adis_single_conversion);
+EXPORT_SYMBOL_NS_GPL(adis_single_conversion, IIO_ADISLIB);
 
 /**
  * adis_init() - Initialize adis device structure
@@ -456,7 +524,7 @@ EXPORT_SYMBOL_GPL(adis_single_conversion);
  * called.
  */
 int adis_init(struct adis *adis, struct iio_dev *indio_dev,
-	struct spi_device *spi, const struct adis_data *data)
+	      struct spi_device *spi, const struct adis_data *data)
 {
 	if (!data || !data->timeouts) {
 		dev_err(&spi->dev, "No config data or timeouts not defined!\n");
@@ -476,9 +544,9 @@ int adis_init(struct adis *adis, struct iio_dev *indio_dev,
 		adis->current_page = 0;
 	}
 
-	return adis_enable_irq(adis, false);
+	return 0;
 }
-EXPORT_SYMBOL_GPL(adis_init);
+EXPORT_SYMBOL_NS_GPL(adis_init, IIO_ADISLIB);
 
 MODULE_LICENSE("GPL");
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index cfb1c19eb930..17bb0c40a149 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -10,22 +10,15 @@
  * Copyright (c) 2011 Analog Devices Inc.
  */
 
-#include <linux/interrupt.h>
 #include <linux/irq.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/module.h>
 #include <linux/debugfs.h>
 #include <linux/bitops.h>
 
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/imu/adis.h>
@@ -156,7 +149,7 @@ struct adis16400_state;
 
 struct adis16400_chip_info {
 	const struct iio_chan_spec *channels;
-	const struct adis_timeout *timeouts;
+	const struct adis_data adis_data;
 	const int num_channels;
 	const long flags;
 	unsigned int gyro_scale_micro;
@@ -173,6 +166,8 @@ struct adis16400_chip_info {
  * @variant:	chip variant info
  * @filt_int:	integer part of requested filter frequency
  * @adis:	adis device
+ * @avail_scan_mask:	NULL terminated array of bitmaps of channels
+ *			that must be enabled together
  **/
 struct adis16400_state {
 	struct adis16400_chip_info	*variant;
@@ -258,7 +253,7 @@ static int adis16400_show_product_id(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16400_product_id_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16400_product_id_fops,
 	adis16400_show_product_id, NULL, "%lld\n");
 
 static int adis16400_show_flash_count(void *arg, u64 *val)
@@ -275,23 +270,22 @@ static int adis16400_show_flash_count(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16400_flash_count_fops,
+DEFINE_DEBUGFS_ATTRIBUTE(adis16400_flash_count_fops,
 	adis16400_show_flash_count, NULL, "%lld\n");
 
 static int adis16400_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16400_state *st = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	if (st->variant->flags & ADIS16400_HAS_SERIAL_NUMBER)
-		debugfs_create_file("serial_number", 0400,
-			indio_dev->debugfs_dentry, st,
-			&adis16400_serial_number_fops);
+		debugfs_create_file_unsafe("serial_number", 0400,
+				d, st, &adis16400_serial_number_fops);
 	if (st->variant->flags & ADIS16400_HAS_PROD_ID)
-		debugfs_create_file("product_id", 0400,
-			indio_dev->debugfs_dentry, st,
-			&adis16400_product_id_fops);
-	debugfs_create_file("flash_count", 0400, indio_dev->debugfs_dentry,
-		st, &adis16400_flash_count_fops);
+		debugfs_create_file_unsafe("product_id", 0400,
+				d, st, &adis16400_product_id_fops);
+	debugfs_create_file_unsafe("flash_count", 0400,
+			d, st, &adis16400_flash_count_fops);
 
 	return 0;
 }
@@ -318,11 +312,6 @@ enum adis16400_chip_variant {
 	ADIS16448,
 };
 
-static struct adis_burst adis16400_burst = {
-	.en = true,
-	.reg_cmd = ADIS16400_GLOB_CMD,
-};
-
 static int adis16334_get_freq(struct adis16400_state *st)
 {
 	int ret;
@@ -466,8 +455,7 @@ static int adis16400_initial_setup(struct iio_dev *indio_dev)
 		if (ret)
 			goto err_ret;
 
-		ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
-		if (ret != 1) {
+		if (sscanf(indio_dev->name, "adis%u\n", &device_id) != 1) {
 			ret = -EINVAL;
 			goto err_ret;
 		}
@@ -509,7 +497,6 @@ static int adis16400_write_raw(struct iio_dev *indio_dev,
 	struct iio_chan_spec const *chan, int val, int val2, long info)
 {
 	struct adis16400_state *st = iio_priv(indio_dev);
-	struct mutex *slock = &st->adis.state_lock;
 	int ret, sps;
 
 	switch (info) {
@@ -522,18 +509,18 @@ static int adis16400_write_raw(struct iio_dev *indio_dev,
 		 * Need to cache values so we can update if the frequency
 		 * changes.
 		 */
-		mutex_lock(slock);
+		adis_dev_lock(&st->adis);
 		st->filt_int = val;
 		/* Work out update to current value */
 		sps = st->variant->get_freq(st);
 		if (sps < 0) {
-			mutex_unlock(slock);
+			adis_dev_unlock(&st->adis);
 			return sps;
 		}
 
 		ret = __adis16400_set_filter(indio_dev, sps,
 			val * 1000 + val2 / 1000);
-		mutex_unlock(slock);
+		adis_dev_unlock(&st->adis);
 		return ret;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		sps = val * 1000 + val2 / 1000;
@@ -541,9 +528,9 @@ static int adis16400_write_raw(struct iio_dev *indio_dev,
 		if (sps <= 0)
 			return -EINVAL;
 
-		mutex_lock(slock);
+		adis_dev_lock(&st->adis);
 		ret = st->variant->set_freq(st, sps);
-		mutex_unlock(slock);
+		adis_dev_unlock(&st->adis);
 		return ret;
 	default:
 		return -EINVAL;
@@ -554,7 +541,6 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
 	struct iio_chan_spec const *chan, int *val, int *val2, long info)
 {
 	struct adis16400_state *st = iio_priv(indio_dev);
-	struct mutex *slock = &st->adis.state_lock;
 	int16_t val16;
 	int ret;
 
@@ -610,17 +596,17 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
 		*val = st->variant->temp_offset;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
-		mutex_lock(slock);
+		adis_dev_lock(&st->adis);
 		/* Need both the number of taps and the sampling frequency */
 		ret = __adis_read_reg_16(&st->adis,
 						ADIS16400_SENS_AVG,
 						&val16);
 		if (ret) {
-			mutex_unlock(slock);
+			adis_dev_unlock(&st->adis);
 			return ret;
 		}
 		ret = st->variant->get_freq(st);
-		mutex_unlock(slock);
+		adis_dev_unlock(&st->adis);
 		if (ret)
 			return ret;
 		ret /= adis16400_3db_divisors[val16 & 0x07];
@@ -628,9 +614,9 @@ static int adis16400_read_raw(struct iio_dev *indio_dev,
 		*val2 = (ret % 1000) * 1000;
 		return IIO_VAL_INT_PLUS_MICRO;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		mutex_lock(slock);
+		adis_dev_lock(&st->adis);
 		ret = st->variant->get_freq(st);
-		mutex_unlock(slock);
+		adis_dev_unlock(&st->adis);
 		if (ret)
 			return ret;
 		*val = ret / 1000;
@@ -648,35 +634,30 @@ static irqreturn_t adis16400_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16400_state *st = iio_priv(indio_dev);
 	struct adis *adis = &st->adis;
-	u32 old_speed_hz = st->adis.spi->max_speed_hz;
 	void *buffer;
 	int ret;
 
-	if (!adis->buffer)
-		return -ENOMEM;
-
-	if (!(st->variant->flags & ADIS16400_NO_BURST) &&
-		st->adis.spi->max_speed_hz > ADIS16400_SPI_BURST) {
-		st->adis.spi->max_speed_hz = ADIS16400_SPI_BURST;
-		spi_setup(st->adis.spi);
-	}
-
 	ret = spi_sync(adis->spi, &adis->msg);
 	if (ret)
 		dev_err(&adis->spi->dev, "Failed to read data: %d\n", ret);
 
-	if (!(st->variant->flags & ADIS16400_NO_BURST)) {
-		st->adis.spi->max_speed_hz = old_speed_hz;
-		spi_setup(st->adis.spi);
-	}
-
-	if (st->variant->flags & ADIS16400_BURST_DIAG_STAT)
+	if (st->variant->flags & ADIS16400_BURST_DIAG_STAT) {
 		buffer = adis->buffer + sizeof(u16);
-	else
-		buffer = adis->buffer;
+		/*
+		 * The size here is always larger than, or equal to the true
+		 * size of the channel data. This may result in a larger copy
+		 * than necessary, but as the target buffer will be
+		 * buffer->scan_bytes this will be safe.
+		 */
+		iio_push_to_buffers_with_ts_unaligned(indio_dev, buffer,
+						      indio_dev->scan_bytes - sizeof(pf->timestamp),
+						      pf->timestamp);
+	} else {
+		iio_push_to_buffers_with_timestamp(indio_dev,
+						   adis->buffer,
+						   pf->timestamp);
+	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
-		pf->timestamp);
 
 	iio_trigger_notify_done(indio_dev->trig);
 
@@ -930,12 +911,67 @@ static const struct iio_chan_spec adis16334_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(ADIS16400_SCAN_TIMESTAMP),
 };
 
+static const char * const adis16400_status_error_msgs[] = {
+	[ADIS16400_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
+	[ADIS16400_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
+	[ADIS16400_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
+	[ADIS16400_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
+	[ADIS16400_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
+	[ADIS16400_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
+	[ADIS16400_DIAG_STAT_ALARM2] = "Alarm 2 active",
+	[ADIS16400_DIAG_STAT_ALARM1] = "Alarm 1 active",
+	[ADIS16400_DIAG_STAT_FLASH_CHK] = "Flash checksum error",
+	[ADIS16400_DIAG_STAT_SELF_TEST] = "Self test error",
+	[ADIS16400_DIAG_STAT_OVERFLOW] = "Sensor overrange",
+	[ADIS16400_DIAG_STAT_SPI_FAIL] = "SPI failure",
+	[ADIS16400_DIAG_STAT_FLASH_UPT] = "Flash update failed",
+	[ADIS16400_DIAG_STAT_POWER_HIGH] = "Power supply above 5.25V",
+	[ADIS16400_DIAG_STAT_POWER_LOW] = "Power supply below 4.75V",
+};
+
+#define ADIS16400_DATA(_timeouts, _burst_len)				\
+{									\
+	.msc_ctrl_reg = ADIS16400_MSC_CTRL,				\
+	.glob_cmd_reg = ADIS16400_GLOB_CMD,				\
+	.diag_stat_reg = ADIS16400_DIAG_STAT,				\
+	.read_delay = 50,						\
+	.write_delay = 50,						\
+	.self_test_mask = ADIS16400_MSC_CTRL_MEM_TEST,			\
+	.self_test_reg = ADIS16400_MSC_CTRL,				\
+	.status_error_msgs = adis16400_status_error_msgs,		\
+	.status_error_mask = BIT(ADIS16400_DIAG_STAT_ZACCL_FAIL) |	\
+		BIT(ADIS16400_DIAG_STAT_YACCL_FAIL) |			\
+		BIT(ADIS16400_DIAG_STAT_XACCL_FAIL) |			\
+		BIT(ADIS16400_DIAG_STAT_XGYRO_FAIL) |			\
+		BIT(ADIS16400_DIAG_STAT_YGYRO_FAIL) |			\
+		BIT(ADIS16400_DIAG_STAT_ZGYRO_FAIL) |			\
+		BIT(ADIS16400_DIAG_STAT_ALARM2) |			\
+		BIT(ADIS16400_DIAG_STAT_ALARM1) |			\
+		BIT(ADIS16400_DIAG_STAT_FLASH_CHK) |			\
+		BIT(ADIS16400_DIAG_STAT_SELF_TEST) |			\
+		BIT(ADIS16400_DIAG_STAT_OVERFLOW) |			\
+		BIT(ADIS16400_DIAG_STAT_SPI_FAIL) |			\
+		BIT(ADIS16400_DIAG_STAT_FLASH_UPT) |			\
+		BIT(ADIS16400_DIAG_STAT_POWER_HIGH) |			\
+		BIT(ADIS16400_DIAG_STAT_POWER_LOW),			\
+	.timeouts = (_timeouts),					\
+	.burst_reg_cmd = ADIS16400_GLOB_CMD,				\
+	.burst_len = (_burst_len),					\
+	.burst_max_speed_hz = ADIS16400_SPI_BURST			\
+}
+
 static const struct adis_timeout adis16300_timeouts = {
 	.reset_ms = ADIS16400_STARTUP_DELAY,
 	.sw_reset_ms = ADIS16400_STARTUP_DELAY,
 	.self_test_ms = ADIS16400_STARTUP_DELAY,
 };
 
+static const struct adis_timeout adis16334_timeouts = {
+	.reset_ms = 60,
+	.sw_reset_ms = 60,
+	.self_test_ms = 14,
+};
+
 static const struct adis_timeout adis16362_timeouts = {
 	.reset_ms = 130,
 	.sw_reset_ms = 130,
@@ -972,7 +1008,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 140000, /* 25 C = 0x00 */
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16300_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16300_timeouts, 18),
 	},
 	[ADIS16334] = {
 		.channels = adis16334_channels,
@@ -985,6 +1021,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 67850, /* 25 C = 0x00 */
 		.set_freq = adis16334_set_freq,
 		.get_freq = adis16334_get_freq,
+		.adis_data = ADIS16400_DATA(&adis16334_timeouts, 0),
 	},
 	[ADIS16350] = {
 		.channels = adis16350_channels,
@@ -996,7 +1033,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.flags = ADIS16400_NO_BURST | ADIS16400_HAS_SLOW_MODE,
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16300_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16300_timeouts, 0),
 	},
 	[ADIS16360] = {
 		.channels = adis16350_channels,
@@ -1009,7 +1046,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16300_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16300_timeouts, 28),
 	},
 	[ADIS16362] = {
 		.channels = adis16350_channels,
@@ -1022,7 +1059,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16362_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16362_timeouts, 28),
 	},
 	[ADIS16364] = {
 		.channels = adis16350_channels,
@@ -1035,7 +1072,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16362_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16362_timeouts, 28),
 	},
 	[ADIS16367] = {
 		.channels = adis16350_channels,
@@ -1048,7 +1085,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16300_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16300_timeouts, 28),
 	},
 	[ADIS16400] = {
 		.channels = adis16400_channels,
@@ -1060,7 +1097,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 25000000 / 140000, /* 25 C = 0x00 */
 		.set_freq = adis16400_set_freq,
 		.get_freq = adis16400_get_freq,
-		.timeouts = &adis16400_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16400_timeouts, 24),
 	},
 	[ADIS16445] = {
 		.channels = adis16445_channels,
@@ -1074,7 +1111,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
 		.set_freq = adis16334_set_freq,
 		.get_freq = adis16334_get_freq,
-		.timeouts = &adis16445_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16445_timeouts, 16),
 	},
 	[ADIS16448] = {
 		.channels = adis16448_channels,
@@ -1088,7 +1125,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		.temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
 		.set_freq = adis16334_set_freq,
 		.get_freq = adis16334_get_freq,
-		.timeouts = &adis16448_timeouts,
+		.adis_data = ADIS16400_DATA(&adis16448_timeouts, 24),
 	}
 };
 
@@ -1099,52 +1136,6 @@ static const struct iio_info adis16400_info = {
 	.debugfs_reg_access = adis_debugfs_reg_access,
 };
 
-static const char * const adis16400_status_error_msgs[] = {
-	[ADIS16400_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
-	[ADIS16400_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
-	[ADIS16400_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
-	[ADIS16400_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
-	[ADIS16400_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
-	[ADIS16400_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
-	[ADIS16400_DIAG_STAT_ALARM2] = "Alarm 2 active",
-	[ADIS16400_DIAG_STAT_ALARM1] = "Alarm 1 active",
-	[ADIS16400_DIAG_STAT_FLASH_CHK] = "Flash checksum error",
-	[ADIS16400_DIAG_STAT_SELF_TEST] = "Self test error",
-	[ADIS16400_DIAG_STAT_OVERFLOW] = "Sensor overrange",
-	[ADIS16400_DIAG_STAT_SPI_FAIL] = "SPI failure",
-	[ADIS16400_DIAG_STAT_FLASH_UPT] = "Flash update failed",
-	[ADIS16400_DIAG_STAT_POWER_HIGH] = "Power supply above 5.25V",
-	[ADIS16400_DIAG_STAT_POWER_LOW] = "Power supply below 4.75V",
-};
-
-static const struct adis_data adis16400_data = {
-	.msc_ctrl_reg = ADIS16400_MSC_CTRL,
-	.glob_cmd_reg = ADIS16400_GLOB_CMD,
-	.diag_stat_reg = ADIS16400_DIAG_STAT,
-
-	.read_delay = 50,
-	.write_delay = 50,
-
-	.self_test_mask = ADIS16400_MSC_CTRL_MEM_TEST,
-
-	.status_error_msgs = adis16400_status_error_msgs,
-	.status_error_mask = BIT(ADIS16400_DIAG_STAT_ZACCL_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_YACCL_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_XACCL_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_XGYRO_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_YGYRO_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_ZGYRO_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_ALARM2) |
-		BIT(ADIS16400_DIAG_STAT_ALARM1) |
-		BIT(ADIS16400_DIAG_STAT_FLASH_CHK) |
-		BIT(ADIS16400_DIAG_STAT_SELF_TEST) |
-		BIT(ADIS16400_DIAG_STAT_OVERFLOW) |
-		BIT(ADIS16400_DIAG_STAT_SPI_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_FLASH_UPT) |
-		BIT(ADIS16400_DIAG_STAT_POWER_HIGH) |
-		BIT(ADIS16400_DIAG_STAT_POWER_LOW),
-};
-
 static void adis16400_setup_chan_mask(struct adis16400_state *st)
 {
 	const struct adis16400_chip_info *chip_info = st->variant;
@@ -1159,20 +1150,9 @@ static void adis16400_setup_chan_mask(struct adis16400_state *st)
 	}
 }
 
-static struct adis_data *adis16400_adis_data_alloc(struct adis16400_state *st,
-						   struct device *dev)
+static void adis16400_stop(void *data)
 {
-	struct adis_data *data;
-
-	data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
-	if (!data)
-		return ERR_PTR(-ENOMEM);
-
-	memcpy(data, &adis16400_data, sizeof(*data));
-
-	data->timeouts = st->variant->timeouts;
-
-	return data;
+	adis16400_stop_device(data);
 }
 
 static int adis16400_probe(struct spi_device *spi)
@@ -1187,12 +1167,9 @@ static int adis16400_probe(struct spi_device *spi)
 		return -ENOMEM;
 
 	st = iio_priv(indio_dev);
-	/* this is only used for removal purposes */
-	spi_set_drvdata(spi, indio_dev);
 
 	/* setup the industrialio driver allocated elements */
 	st->variant = &adis16400_chips[spi_get_device_id(spi)->driver_data];
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->channels = st->variant->channels;
 	indio_dev->num_channels = st->variant->num_channels;
@@ -1202,50 +1179,32 @@ static int adis16400_probe(struct spi_device *spi)
 	if (!(st->variant->flags & ADIS16400_NO_BURST)) {
 		adis16400_setup_chan_mask(st);
 		indio_dev->available_scan_masks = st->avail_scan_mask;
-		st->adis.burst = &adis16400_burst;
-		if (st->variant->flags & ADIS16400_BURST_DIAG_STAT)
-			st->adis.burst->extra_len = sizeof(u16);
 	}
 
-	adis16400_data = adis16400_adis_data_alloc(st, &spi->dev);
-	if (IS_ERR(adis16400_data))
-		return PTR_ERR(adis16400_data);
+	adis16400_data = &st->variant->adis_data;
 
 	ret = adis_init(&st->adis, indio_dev, spi, adis16400_data);
 	if (ret)
 		return ret;
 
-	ret = adis_setup_buffer_and_trigger(&st->adis, indio_dev,
-			adis16400_trigger_handler);
+	ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev, adis16400_trigger_handler);
 	if (ret)
 		return ret;
 
 	/* Get the device into a sane initial state */
 	ret = adis16400_initial_setup(indio_dev);
 	if (ret)
-		goto error_cleanup_buffer;
-	ret = iio_device_register(indio_dev);
-	if (ret)
-		goto error_cleanup_buffer;
-
-	adis16400_debugfs_init(indio_dev);
-	return 0;
-
-error_cleanup_buffer:
-	adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
-	return ret;
-}
-
-static int adis16400_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis16400_state *st = iio_priv(indio_dev);
+		return ret;
 
-	iio_device_unregister(indio_dev);
-	adis16400_stop_device(indio_dev);
+	ret = devm_add_action_or_reset(&spi->dev, adis16400_stop, indio_dev);
+	if (ret)
+		return ret;
 
-	adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
 
+	adis16400_debugfs_init(indio_dev);
 	return 0;
 }
 
@@ -1275,10 +1234,10 @@ static struct spi_driver adis16400_driver = {
 	},
 	.id_table = adis16400_id,
 	.probe = adis16400_probe,
-	.remove = adis16400_remove,
 };
 module_spi_driver(adis16400_driver);
 
 MODULE_AUTHOR("Manuel Stahl <manuel.stahl@iis.fraunhofer.de>");
 MODULE_DESCRIPTION("Analog Devices ADIS16400/5 IMU SPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/imu/adis16460.c b/drivers/iio/imu/adis16460.c
index 9539cfe4a259..69facd72bd7d 100644
--- a/drivers/iio/imu/adis16460.c
+++ b/drivers/iio/imu/adis16460.c
@@ -5,7 +5,6 @@
  * Copyright 2019 Analog Devices Inc.
  */
 
-#include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/spi/spi.h>
 
@@ -87,8 +86,8 @@ static int adis16460_show_serial_number(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16460_serial_number_fops,
-	adis16460_show_serial_number, NULL, "0x%.4llx\n");
+DEFINE_DEBUGFS_ATTRIBUTE(adis16460_serial_number_fops,
+		adis16460_show_serial_number, NULL, "0x%.4llx\n");
 
 static int adis16460_show_product_id(void *arg, u64 *val)
 {
@@ -105,8 +104,8 @@ static int adis16460_show_product_id(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16460_product_id_fops,
-	adis16460_show_product_id, NULL, "%llu\n");
+DEFINE_DEBUGFS_ATTRIBUTE(adis16460_product_id_fops,
+		adis16460_show_product_id, NULL, "%llu\n");
 
 static int adis16460_show_flash_count(void *arg, u64 *val)
 {
@@ -123,19 +122,20 @@ static int adis16460_show_flash_count(void *arg, u64 *val)
 
 	return 0;
 }
-DEFINE_SIMPLE_ATTRIBUTE(adis16460_flash_count_fops,
-	adis16460_show_flash_count, NULL, "%lld\n");
+DEFINE_DEBUGFS_ATTRIBUTE(adis16460_flash_count_fops,
+		adis16460_show_flash_count, NULL, "%lld\n");
 
 static int adis16460_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16460 *adis16460 = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
-	debugfs_create_file("serial_number", 0400, indio_dev->debugfs_dentry,
-		adis16460, &adis16460_serial_number_fops);
-	debugfs_create_file("product_id", 0400, indio_dev->debugfs_dentry,
-		adis16460, &adis16460_product_id_fops);
-	debugfs_create_file("flash_count", 0400, indio_dev->debugfs_dentry,
-		adis16460, &adis16460_flash_count_fops);
+	debugfs_create_file_unsafe("serial_number", 0400,
+			d, adis16460, &adis16460_serial_number_fops);
+	debugfs_create_file_unsafe("product_id", 0400,
+			d, adis16460, &adis16460_product_id_fops);
+	debugfs_create_file_unsafe("flash_count", 0400,
+			d, adis16460, &adis16460_flash_count_fops);
 
 	return 0;
 }
@@ -319,54 +319,6 @@ static const struct iio_info adis16460_info = {
 	.debugfs_reg_access = adis_debugfs_reg_access,
 };
 
-static int adis16460_enable_irq(struct adis *adis, bool enable)
-{
-	/*
-	 * There is no way to gate the data-ready signal internally inside the
-	 * ADIS16460 :(
-	 */
-	if (enable)
-		enable_irq(adis->spi->irq);
-	else
-		disable_irq(adis->spi->irq);
-
-	return 0;
-}
-
-static int adis16460_initial_setup(struct iio_dev *indio_dev)
-{
-	struct adis16460 *st = iio_priv(indio_dev);
-	uint16_t prod_id;
-	unsigned int device_id;
-	int ret;
-
-	adis_reset(&st->adis);
-	msleep(222);
-
-	ret = adis_write_reg_16(&st->adis, ADIS16460_REG_GLOB_CMD, BIT(1));
-	if (ret)
-		return ret;
-	msleep(75);
-
-	ret = adis_check_status(&st->adis);
-	if (ret)
-		return ret;
-
-	ret = adis_read_reg_16(&st->adis, ADIS16460_REG_PROD_ID, &prod_id);
-	if (ret)
-		return ret;
-
-	ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
-	if (ret != 1)
-		return -EINVAL;
-
-	if (prod_id != device_id)
-		dev_warn(&indio_dev->dev, "Device ID(%u) and product ID(%u) do not match.",
-				device_id, prod_id);
-
-	return 0;
-}
-
 #define ADIS16460_DIAG_STAT_IN_CLK_OOS	7
 #define ADIS16460_DIAG_STAT_FLASH_MEM	6
 #define ADIS16460_DIAG_STAT_SELF_TEST	5
@@ -392,6 +344,10 @@ static const struct adis_timeout adis16460_timeouts = {
 static const struct adis_data adis16460_data = {
 	.diag_stat_reg = ADIS16460_REG_DIAG_STAT,
 	.glob_cmd_reg = ADIS16460_REG_GLOB_CMD,
+	.prod_id_reg = ADIS16460_REG_PROD_ID,
+	.prod_id = 16460,
+	.self_test_mask = BIT(2),
+	.self_test_reg = ADIS16460_REG_GLOB_CMD,
 	.has_paging = false,
 	.read_delay = 5,
 	.write_delay = 5,
@@ -403,7 +359,7 @@ static const struct adis_data adis16460_data = {
 		BIT(ADIS16460_DIAG_STAT_OVERRANGE) |
 		BIT(ADIS16460_DIAG_STAT_SPI_COMM) |
 		BIT(ADIS16460_DIAG_STAT_FLASH_UPT),
-	.enable_irq = adis16460_enable_irq,
+	.unmasked_drdy = true,
 	.timeouts = &adis16460_timeouts,
 };
 
@@ -417,12 +373,9 @@ static int adis16460_probe(struct spi_device *spi)
 	if (indio_dev == NULL)
 		return -ENOMEM;
 
-	spi_set_drvdata(spi, indio_dev);
-
 	st = iio_priv(indio_dev);
 
 	st->chip_info = &adis16460_chip_info;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
@@ -433,39 +386,21 @@ static int adis16460_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	ret = adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
+	ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
 	if (ret)
 		return ret;
 
-	adis16460_enable_irq(&st->adis, 0);
-
-	ret = adis16460_initial_setup(indio_dev);
+	ret = __adis_initial_startup(&st->adis);
 	if (ret)
-		goto error_cleanup_buffer;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
 	if (ret)
-		goto error_cleanup_buffer;
+		return ret;
 
 	adis16460_debugfs_init(indio_dev);
 
 	return 0;
-
-error_cleanup_buffer:
-	adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
-	return ret;
-}
-
-static int adis16460_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis16460 *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-
-	adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
-
-	return 0;
 }
 
 static const struct spi_device_id adis16460_ids[] = {
@@ -487,10 +422,10 @@ static struct spi_driver adis16460_driver = {
 	},
 	.id_table = adis16460_ids,
 	.probe = adis16460_probe,
-	.remove = adis16460_remove,
 };
 module_spi_driver(adis16460_driver);
 
 MODULE_AUTHOR("Dragos Bogdan <dragos.bogdan@analog.com>");
 MODULE_DESCRIPTION("Analog Devices ADIS16460 IMU driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/imu/adis16475.c b/drivers/iio/imu/adis16475.c
new file mode 100644
index 000000000000..aec55f7e1f26
--- /dev/null
+++ b/drivers/iio/imu/adis16475.c
@@ -0,0 +1,1355 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * ADIS16475 IMU driver
+ *
+ * Copyright 2019 Analog Devices Inc.
+ */
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/imu/adis.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/irq.h>
+#include <linux/lcm.h>
+#include <linux/math.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+
+#define ADIS16475_REG_DIAG_STAT		0x02
+#define ADIS16475_REG_X_GYRO_L		0x04
+#define ADIS16475_REG_Y_GYRO_L		0x08
+#define ADIS16475_REG_Z_GYRO_L		0x0C
+#define ADIS16475_REG_X_ACCEL_L		0x10
+#define ADIS16475_REG_Y_ACCEL_L		0x14
+#define ADIS16475_REG_Z_ACCEL_L		0x18
+#define ADIS16475_REG_TEMP_OUT		0x1c
+#define ADIS16475_REG_X_GYRO_BIAS_L	0x40
+#define ADIS16475_REG_Y_GYRO_BIAS_L	0x44
+#define ADIS16475_REG_Z_GYRO_BIAS_L	0x48
+#define ADIS16475_REG_X_ACCEL_BIAS_L	0x4c
+#define ADIS16475_REG_Y_ACCEL_BIAS_L	0x50
+#define ADIS16475_REG_Z_ACCEL_BIAS_L	0x54
+#define ADIS16475_REG_FILT_CTRL		0x5c
+#define ADIS16475_FILT_CTRL_MASK	GENMASK(2, 0)
+#define ADIS16475_FILT_CTRL(x)		FIELD_PREP(ADIS16475_FILT_CTRL_MASK, x)
+#define ADIS16475_REG_MSG_CTRL		0x60
+#define ADIS16475_MSG_CTRL_DR_POL_MASK	BIT(0)
+#define ADIS16475_MSG_CTRL_DR_POL(x) \
+				FIELD_PREP(ADIS16475_MSG_CTRL_DR_POL_MASK, x)
+#define ADIS16475_SYNC_MODE_MASK	GENMASK(4, 2)
+#define ADIS16475_SYNC_MODE(x)		FIELD_PREP(ADIS16475_SYNC_MODE_MASK, x)
+#define ADIS16475_REG_UP_SCALE		0x62
+#define ADIS16475_REG_DEC_RATE		0x64
+#define ADIS16475_REG_GLOB_CMD		0x68
+#define ADIS16475_REG_FIRM_REV		0x6c
+#define ADIS16475_REG_FIRM_DM		0x6e
+#define ADIS16475_REG_FIRM_Y		0x70
+#define ADIS16475_REG_PROD_ID		0x72
+#define ADIS16475_REG_SERIAL_NUM	0x74
+#define ADIS16475_REG_FLASH_CNT		0x7c
+#define ADIS16500_BURST32_MASK		BIT(9)
+#define ADIS16500_BURST32(x)		FIELD_PREP(ADIS16500_BURST32_MASK, x)
+/* number of data elements in burst mode */
+#define ADIS16475_BURST32_MAX_DATA	32
+#define ADIS16475_BURST_MAX_DATA	20
+#define ADIS16475_MAX_SCAN_DATA		20
+/* spi max speed in brust mode */
+#define ADIS16475_BURST_MAX_SPEED	1000000
+#define ADIS16475_LSB_DEC_MASK		BIT(0)
+#define ADIS16475_LSB_FIR_MASK		BIT(1)
+
+enum {
+	ADIS16475_SYNC_DIRECT = 1,
+	ADIS16475_SYNC_SCALED,
+	ADIS16475_SYNC_OUTPUT,
+	ADIS16475_SYNC_PULSE = 5,
+};
+
+struct adis16475_sync {
+	u16 sync_mode;
+	u16 min_rate;
+	u16 max_rate;
+};
+
+struct adis16475_chip_info {
+	const struct iio_chan_spec *channels;
+	const struct adis16475_sync *sync;
+	const struct adis_data adis_data;
+	const char *name;
+	u32 num_channels;
+	u32 gyro_max_val;
+	u32 gyro_max_scale;
+	u32 accel_max_val;
+	u32 accel_max_scale;
+	u32 temp_scale;
+	u32 int_clk;
+	u16 max_dec;
+	u8 num_sync;
+	bool has_burst32;
+};
+
+struct adis16475 {
+	const struct adis16475_chip_info *info;
+	struct adis adis;
+	u32 clk_freq;
+	bool burst32;
+	unsigned long lsb_flag;
+	u16 sync_mode;
+	/* Alignment needed for the timestamp */
+	__be16 data[ADIS16475_MAX_SCAN_DATA] __aligned(8);
+};
+
+enum {
+	ADIS16475_SCAN_GYRO_X,
+	ADIS16475_SCAN_GYRO_Y,
+	ADIS16475_SCAN_GYRO_Z,
+	ADIS16475_SCAN_ACCEL_X,
+	ADIS16475_SCAN_ACCEL_Y,
+	ADIS16475_SCAN_ACCEL_Z,
+	ADIS16475_SCAN_TEMP,
+	ADIS16475_SCAN_DIAG_S_FLAGS,
+	ADIS16475_SCAN_CRC_FAILURE,
+};
+
+static bool low_rate_allow;
+module_param(low_rate_allow, bool, 0444);
+MODULE_PARM_DESC(low_rate_allow,
+		 "Allow IMU rates below the minimum advisable when external clk is used in SCALED mode (default: N)");
+
+#ifdef CONFIG_DEBUG_FS
+static ssize_t adis16475_show_firmware_revision(struct file *file,
+						char __user *userbuf,
+						size_t count, loff_t *ppos)
+{
+	struct adis16475 *st = file->private_data;
+	char buf[7];
+	size_t len;
+	u16 rev;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FIRM_REV, &rev);
+	if (ret)
+		return ret;
+
+	len = scnprintf(buf, sizeof(buf), "%x.%x\n", rev >> 8, rev & 0xff);
+
+	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16475_firmware_revision_fops = {
+	.open = simple_open,
+	.read = adis16475_show_firmware_revision,
+	.llseek = default_llseek,
+	.owner = THIS_MODULE,
+};
+
+static ssize_t adis16475_show_firmware_date(struct file *file,
+					    char __user *userbuf,
+					    size_t count, loff_t *ppos)
+{
+	struct adis16475 *st = file->private_data;
+	u16 md, year;
+	char buf[12];
+	size_t len;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FIRM_Y, &year);
+	if (ret)
+		return ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FIRM_DM, &md);
+	if (ret)
+		return ret;
+
+	len = snprintf(buf, sizeof(buf), "%.2x-%.2x-%.4x\n", md >> 8, md & 0xff,
+		       year);
+
+	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+}
+
+static const struct file_operations adis16475_firmware_date_fops = {
+	.open = simple_open,
+	.read = adis16475_show_firmware_date,
+	.llseek = default_llseek,
+	.owner = THIS_MODULE,
+};
+
+static int adis16475_show_serial_number(void *arg, u64 *val)
+{
+	struct adis16475 *st = arg;
+	u16 serial;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_SERIAL_NUM, &serial);
+	if (ret)
+		return ret;
+
+	*val = serial;
+
+	return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adis16475_serial_number_fops,
+			 adis16475_show_serial_number, NULL, "0x%.4llx\n");
+
+static int adis16475_show_product_id(void *arg, u64 *val)
+{
+	struct adis16475 *st = arg;
+	u16 prod_id;
+	int ret;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_PROD_ID, &prod_id);
+	if (ret)
+		return ret;
+
+	*val = prod_id;
+
+	return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adis16475_product_id_fops,
+			 adis16475_show_product_id, NULL, "%llu\n");
+
+static int adis16475_show_flash_count(void *arg, u64 *val)
+{
+	struct adis16475 *st = arg;
+	u32 flash_count;
+	int ret;
+
+	ret = adis_read_reg_32(&st->adis, ADIS16475_REG_FLASH_CNT,
+			       &flash_count);
+	if (ret)
+		return ret;
+
+	*val = flash_count;
+
+	return 0;
+}
+DEFINE_DEBUGFS_ATTRIBUTE(adis16475_flash_count_fops,
+			 adis16475_show_flash_count, NULL, "%lld\n");
+
+static void adis16475_debugfs_init(struct iio_dev *indio_dev)
+{
+	struct adis16475 *st = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
+
+	debugfs_create_file_unsafe("serial_number", 0400,
+				   d, st, &adis16475_serial_number_fops);
+	debugfs_create_file_unsafe("product_id", 0400,
+				   d, st, &adis16475_product_id_fops);
+	debugfs_create_file_unsafe("flash_count", 0400,
+				   d, st, &adis16475_flash_count_fops);
+	debugfs_create_file("firmware_revision", 0400,
+			    d, st, &adis16475_firmware_revision_fops);
+	debugfs_create_file("firmware_date", 0400, d,
+			    st, &adis16475_firmware_date_fops);
+}
+#else
+static void adis16475_debugfs_init(struct iio_dev *indio_dev)
+{
+}
+#endif
+
+static int adis16475_get_freq(struct adis16475 *st, u32 *freq)
+{
+	int ret;
+	u16 dec;
+	u32 sample_rate = st->clk_freq;
+
+	adis_dev_lock(&st->adis);
+
+	if (st->sync_mode == ADIS16475_SYNC_SCALED) {
+		u16 sync_scale;
+
+		ret = __adis_read_reg_16(&st->adis, ADIS16475_REG_UP_SCALE, &sync_scale);
+		if (ret)
+			goto error;
+
+		sample_rate = st->clk_freq * sync_scale;
+	}
+
+	ret = __adis_read_reg_16(&st->adis, ADIS16475_REG_DEC_RATE, &dec);
+	if (ret)
+		goto error;
+
+	adis_dev_unlock(&st->adis);
+
+	*freq = DIV_ROUND_CLOSEST(sample_rate, dec + 1);
+
+	return 0;
+error:
+	adis_dev_unlock(&st->adis);
+	return ret;
+}
+
+static int adis16475_set_freq(struct adis16475 *st, const u32 freq)
+{
+	u16 dec;
+	int ret;
+	u32 sample_rate = st->clk_freq;
+
+	if (!freq)
+		return -EINVAL;
+
+	adis_dev_lock(&st->adis);
+	/*
+	 * When using sync scaled mode, the input clock needs to be scaled so that we have
+	 * an IMU sample rate between (optimally) 1900 and 2100. After this, we can use the
+	 * decimation filter to lower the sampling rate in order to get what the user wants.
+	 * Optimally, the user sample rate is a multiple of both the IMU sample rate and
+	 * the input clock. Hence, calculating the sync_scale dynamically gives us better
+	 * chances of achieving a perfect/integer value for DEC_RATE. The math here is:
+	 *	1. lcm of the input clock and the desired output rate.
+	 *	2. get the highest multiple of the previous result lower than the adis max rate.
+	 *	3. The last result becomes the IMU sample rate. Use that to calculate SYNC_SCALE
+	 *	   and DEC_RATE (to get the user output rate)
+	 */
+	if (st->sync_mode == ADIS16475_SYNC_SCALED) {
+		unsigned long scaled_rate = lcm(st->clk_freq, freq);
+		int sync_scale;
+
+		/*
+		 * If lcm is bigger than the IMU maximum sampling rate there's no perfect
+		 * solution. In this case, we get the highest multiple of the input clock
+		 * lower than the IMU max sample rate.
+		 */
+		if (scaled_rate > 2100000)
+			scaled_rate = 2100000 / st->clk_freq * st->clk_freq;
+		else
+			scaled_rate = 2100000 / scaled_rate * scaled_rate;
+
+		/*
+		 * This is not an hard requirement but it's not advised to run the IMU
+		 * with a sample rate lower than 4000Hz due to possible undersampling
+		 * issues. However, there are users that might really want to take the risk.
+		 * Hence, we provide a module parameter for them. If set, we allow sample
+		 * rates lower than 4KHz. By default, we won't allow this and we just roundup
+		 * the rate to the next multiple of the input clock bigger than 4KHz. This
+		 * is done like this as in some cases (when DEC_RATE is 0) might give
+		 * us the closest value to the one desired by the user...
+		 */
+		if (scaled_rate < 1900000 && !low_rate_allow)
+			scaled_rate = roundup(1900000, st->clk_freq);
+
+		sync_scale = scaled_rate / st->clk_freq;
+		ret = __adis_write_reg_16(&st->adis, ADIS16475_REG_UP_SCALE, sync_scale);
+		if (ret)
+			goto error;
+
+		sample_rate = scaled_rate;
+	}
+
+	dec = DIV_ROUND_CLOSEST(sample_rate, freq);
+
+	if (dec)
+		dec--;
+
+	if (dec > st->info->max_dec)
+		dec = st->info->max_dec;
+
+	ret = __adis_write_reg_16(&st->adis, ADIS16475_REG_DEC_RATE, dec);
+	if (ret)
+		goto error;
+
+	adis_dev_unlock(&st->adis);
+	/*
+	 * If decimation is used, then gyro and accel data will have meaningful
+	 * bits on the LSB registers. This info is used on the trigger handler.
+	 */
+	assign_bit(ADIS16475_LSB_DEC_MASK, &st->lsb_flag, dec);
+
+	return 0;
+error:
+	adis_dev_unlock(&st->adis);
+	return ret;
+}
+
+/* The values are approximated. */
+static const u32 adis16475_3db_freqs[] = {
+	[0] = 720, /* Filter disabled, full BW (~720Hz) */
+	[1] = 360,
+	[2] = 164,
+	[3] = 80,
+	[4] = 40,
+	[5] = 20,
+	[6] = 10,
+};
+
+static int adis16475_get_filter(struct adis16475 *st, u32 *filter)
+{
+	u16 filter_sz;
+	int ret;
+	const int mask = ADIS16475_FILT_CTRL_MASK;
+
+	ret = adis_read_reg_16(&st->adis, ADIS16475_REG_FILT_CTRL, &filter_sz);
+	if (ret)
+		return ret;
+
+	*filter = adis16475_3db_freqs[filter_sz & mask];
+
+	return 0;
+}
+
+static int adis16475_set_filter(struct adis16475 *st, const u32 filter)
+{
+	int i = ARRAY_SIZE(adis16475_3db_freqs);
+	int ret;
+
+	while (--i) {
+		if (adis16475_3db_freqs[i] >= filter)
+			break;
+	}
+
+	ret = adis_write_reg_16(&st->adis, ADIS16475_REG_FILT_CTRL,
+				ADIS16475_FILT_CTRL(i));
+	if (ret)
+		return ret;
+
+	/*
+	 * If FIR is used, then gyro and accel data will have meaningful
+	 * bits on the LSB registers. This info is used on the trigger handler.
+	 */
+	assign_bit(ADIS16475_LSB_FIR_MASK, &st->lsb_flag, i);
+
+	return 0;
+}
+
+static const u32 adis16475_calib_regs[] = {
+	[ADIS16475_SCAN_GYRO_X] = ADIS16475_REG_X_GYRO_BIAS_L,
+	[ADIS16475_SCAN_GYRO_Y] = ADIS16475_REG_Y_GYRO_BIAS_L,
+	[ADIS16475_SCAN_GYRO_Z] = ADIS16475_REG_Z_GYRO_BIAS_L,
+	[ADIS16475_SCAN_ACCEL_X] = ADIS16475_REG_X_ACCEL_BIAS_L,
+	[ADIS16475_SCAN_ACCEL_Y] = ADIS16475_REG_Y_ACCEL_BIAS_L,
+	[ADIS16475_SCAN_ACCEL_Z] = ADIS16475_REG_Z_ACCEL_BIAS_L,
+};
+
+static int adis16475_read_raw(struct iio_dev *indio_dev,
+			      const struct iio_chan_spec *chan,
+			      int *val, int *val2, long info)
+{
+	struct adis16475 *st = iio_priv(indio_dev);
+	int ret;
+	u32 tmp;
+
+	switch (info) {
+	case IIO_CHAN_INFO_RAW:
+		return adis_single_conversion(indio_dev, chan, 0, val);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			*val = st->info->gyro_max_val;
+			*val2 = st->info->gyro_max_scale;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_ACCEL:
+			*val = st->info->accel_max_val;
+			*val2 = st->info->accel_max_scale;
+			return IIO_VAL_FRACTIONAL;
+		case IIO_TEMP:
+			*val = st->info->temp_scale;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = adis_read_reg_32(&st->adis,
+				       adis16475_calib_regs[chan->scan_index],
+				       val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		ret = adis16475_get_filter(st, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		ret = adis16475_get_freq(st, &tmp);
+		if (ret)
+			return ret;
+
+		*val = tmp / 1000;
+		*val2 = (tmp % 1000) * 1000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int adis16475_write_raw(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       int val, int val2, long info)
+{
+	struct adis16475 *st = iio_priv(indio_dev);
+	u32 tmp;
+
+	switch (info) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		tmp = val * 1000 + val2 / 1000;
+		return adis16475_set_freq(st, tmp);
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		return adis16475_set_filter(st, val);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return adis_write_reg_32(&st->adis,
+					 adis16475_calib_regs[chan->scan_index],
+					 val);
+	default:
+		return -EINVAL;
+	}
+}
+
+#define ADIS16475_MOD_CHAN(_type, _mod, _address, _si, _r_bits, _s_bits) \
+	{ \
+		.type = (_type), \
+		.modified = 1, \
+		.channel2 = (_mod), \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_CALIBBIAS), \
+		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
+		.address = (_address), \
+		.scan_index = (_si), \
+		.scan_type = { \
+			.sign = 's', \
+			.realbits = (_r_bits), \
+			.storagebits = (_s_bits), \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+#define ADIS16475_GYRO_CHANNEL(_mod) \
+	ADIS16475_MOD_CHAN(IIO_ANGL_VEL, IIO_MOD_ ## _mod, \
+			   ADIS16475_REG_ ## _mod ## _GYRO_L, \
+			   ADIS16475_SCAN_GYRO_ ## _mod, 32, 32)
+
+#define ADIS16475_ACCEL_CHANNEL(_mod) \
+	ADIS16475_MOD_CHAN(IIO_ACCEL, IIO_MOD_ ## _mod, \
+			   ADIS16475_REG_ ## _mod ## _ACCEL_L, \
+			   ADIS16475_SCAN_ACCEL_ ## _mod, 32, 32)
+
+#define ADIS16475_TEMP_CHANNEL() { \
+		.type = IIO_TEMP, \
+		.indexed = 1, \
+		.channel = 0, \
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
+			BIT(IIO_CHAN_INFO_SCALE), \
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY), \
+		.address = ADIS16475_REG_TEMP_OUT, \
+		.scan_index = ADIS16475_SCAN_TEMP, \
+		.scan_type = { \
+			.sign = 's', \
+			.realbits = 16, \
+			.storagebits = 16, \
+			.endianness = IIO_BE, \
+		}, \
+	}
+
+static const struct iio_chan_spec adis16475_channels[] = {
+	ADIS16475_GYRO_CHANNEL(X),
+	ADIS16475_GYRO_CHANNEL(Y),
+	ADIS16475_GYRO_CHANNEL(Z),
+	ADIS16475_ACCEL_CHANNEL(X),
+	ADIS16475_ACCEL_CHANNEL(Y),
+	ADIS16475_ACCEL_CHANNEL(Z),
+	ADIS16475_TEMP_CHANNEL(),
+	IIO_CHAN_SOFT_TIMESTAMP(7)
+};
+
+enum adis16475_variant {
+	ADIS16470,
+	ADIS16475_1,
+	ADIS16475_2,
+	ADIS16475_3,
+	ADIS16477_1,
+	ADIS16477_2,
+	ADIS16477_3,
+	ADIS16465_1,
+	ADIS16465_2,
+	ADIS16465_3,
+	ADIS16467_1,
+	ADIS16467_2,
+	ADIS16467_3,
+	ADIS16500,
+	ADIS16505_1,
+	ADIS16505_2,
+	ADIS16505_3,
+	ADIS16507_1,
+	ADIS16507_2,
+	ADIS16507_3,
+};
+
+enum {
+	ADIS16475_DIAG_STAT_DATA_PATH = 1,
+	ADIS16475_DIAG_STAT_FLASH_MEM,
+	ADIS16475_DIAG_STAT_SPI,
+	ADIS16475_DIAG_STAT_STANDBY,
+	ADIS16475_DIAG_STAT_SENSOR,
+	ADIS16475_DIAG_STAT_MEMORY,
+	ADIS16475_DIAG_STAT_CLK,
+};
+
+static const char * const adis16475_status_error_msgs[] = {
+	[ADIS16475_DIAG_STAT_DATA_PATH] = "Data Path Overrun",
+	[ADIS16475_DIAG_STAT_FLASH_MEM] = "Flash memory update failure",
+	[ADIS16475_DIAG_STAT_SPI] = "SPI communication error",
+	[ADIS16475_DIAG_STAT_STANDBY] = "Standby mode",
+	[ADIS16475_DIAG_STAT_SENSOR] = "Sensor failure",
+	[ADIS16475_DIAG_STAT_MEMORY] = "Memory failure",
+	[ADIS16475_DIAG_STAT_CLK] = "Clock error",
+};
+
+#define ADIS16475_DATA(_prod_id, _timeouts)				\
+{									\
+	.msc_ctrl_reg = ADIS16475_REG_MSG_CTRL,				\
+	.glob_cmd_reg = ADIS16475_REG_GLOB_CMD,				\
+	.diag_stat_reg = ADIS16475_REG_DIAG_STAT,			\
+	.prod_id_reg = ADIS16475_REG_PROD_ID,				\
+	.prod_id = (_prod_id),						\
+	.self_test_mask = BIT(2),					\
+	.self_test_reg = ADIS16475_REG_GLOB_CMD,			\
+	.cs_change_delay = 16,						\
+	.read_delay = 5,						\
+	.write_delay = 5,						\
+	.status_error_msgs = adis16475_status_error_msgs,		\
+	.status_error_mask = BIT(ADIS16475_DIAG_STAT_DATA_PATH) |	\
+		BIT(ADIS16475_DIAG_STAT_FLASH_MEM) |			\
+		BIT(ADIS16475_DIAG_STAT_SPI) |				\
+		BIT(ADIS16475_DIAG_STAT_STANDBY) |			\
+		BIT(ADIS16475_DIAG_STAT_SENSOR) |			\
+		BIT(ADIS16475_DIAG_STAT_MEMORY) |			\
+		BIT(ADIS16475_DIAG_STAT_CLK),				\
+	.unmasked_drdy = true,						\
+	.timeouts = (_timeouts),					\
+	.burst_reg_cmd = ADIS16475_REG_GLOB_CMD,			\
+	.burst_len = ADIS16475_BURST_MAX_DATA,				\
+	.burst_max_len = ADIS16475_BURST32_MAX_DATA,			\
+	.burst_max_speed_hz = ADIS16475_BURST_MAX_SPEED			\
+}
+
+static const struct adis16475_sync adis16475_sync_mode[] = {
+	{ ADIS16475_SYNC_OUTPUT },
+	{ ADIS16475_SYNC_DIRECT, 1900, 2100 },
+	{ ADIS16475_SYNC_SCALED, 1, 128 },
+	{ ADIS16475_SYNC_PULSE, 1000, 2100 },
+};
+
+static const struct adis_timeout adis16475_timeouts = {
+	.reset_ms = 200,
+	.sw_reset_ms = 200,
+	.self_test_ms = 20,
+};
+
+static const struct adis_timeout adis1650x_timeouts = {
+	.reset_ms = 260,
+	.sw_reset_ms = 260,
+	.self_test_ms = 30,
+};
+
+static const struct adis16475_chip_info adis16475_chip_info[] = {
+	[ADIS16470] = {
+		.name = "adis16470",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16470, &adis16475_timeouts),
+	},
+	[ADIS16475_1] = {
+		.name = "adis16475-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16475, &adis16475_timeouts),
+	},
+	[ADIS16475_2] = {
+		.name = "adis16475-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16475, &adis16475_timeouts),
+	},
+	[ADIS16475_3] = {
+		.name = "adis16475-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16475, &adis16475_timeouts),
+	},
+	[ADIS16477_1] = {
+		.name = "adis16477-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16477, &adis16475_timeouts),
+	},
+	[ADIS16477_2] = {
+		.name = "adis16477-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16477, &adis16475_timeouts),
+	},
+	[ADIS16477_3] = {
+		.name = "adis16477-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16477, &adis16475_timeouts),
+	},
+	[ADIS16465_1] = {
+		.name = "adis16465-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16465, &adis16475_timeouts),
+	},
+	[ADIS16465_2] = {
+		.name = "adis16465-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16465, &adis16475_timeouts),
+	},
+	[ADIS16465_3] = {
+		.name = "adis16465-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(4000 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16465, &adis16475_timeouts),
+	},
+	[ADIS16467_1] = {
+		.name = "adis16467-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16467, &adis16475_timeouts),
+	},
+	[ADIS16467_2] = {
+		.name = "adis16467-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16467, &adis16475_timeouts),
+	},
+	[ADIS16467_3] = {
+		.name = "adis16467-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 1,
+		.accel_max_scale = IIO_M_S_2_TO_G(800 << 16),
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode),
+		.adis_data = ADIS16475_DATA(16467, &adis16475_timeouts),
+	},
+	[ADIS16500] = {
+		.name = "adis16500",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16500, &adis1650x_timeouts),
+	},
+	[ADIS16505_1] = {
+		.name = "adis16505-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 78,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16505, &adis1650x_timeouts),
+	},
+	[ADIS16505_2] = {
+		.name = "adis16505-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 78,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16505, &adis1650x_timeouts),
+	},
+	[ADIS16505_3] = {
+		.name = "adis16505-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 78,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16505, &adis1650x_timeouts),
+	},
+	[ADIS16507_1] = {
+		.name = "adis16507-1",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(160 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16507, &adis1650x_timeouts),
+	},
+	[ADIS16507_2] = {
+		.name = "adis16507-2",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(40 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16507, &adis1650x_timeouts),
+	},
+	[ADIS16507_3] = {
+		.name = "adis16507-3",
+		.num_channels = ARRAY_SIZE(adis16475_channels),
+		.channels = adis16475_channels,
+		.gyro_max_val = 1,
+		.gyro_max_scale = IIO_RAD_TO_DEGREE(10 << 16),
+		.accel_max_val = 392,
+		.accel_max_scale = 32000 << 16,
+		.temp_scale = 100,
+		.int_clk = 2000,
+		.max_dec = 1999,
+		.sync = adis16475_sync_mode,
+		/* pulse sync not supported */
+		.num_sync = ARRAY_SIZE(adis16475_sync_mode) - 1,
+		.has_burst32 = true,
+		.adis_data = ADIS16475_DATA(16507, &adis1650x_timeouts),
+	},
+};
+
+static const struct iio_info adis16475_info = {
+	.read_raw = &adis16475_read_raw,
+	.write_raw = &adis16475_write_raw,
+	.update_scan_mode = adis_update_scan_mode,
+	.debugfs_reg_access = adis_debugfs_reg_access,
+};
+
+static bool adis16475_validate_crc(const u8 *buffer, u16 crc,
+				   const bool burst32)
+{
+	int i;
+	/* extra 6 elements for low gyro and accel */
+	const u16 sz = burst32 ? ADIS16475_BURST32_MAX_DATA :
+		ADIS16475_BURST_MAX_DATA;
+
+	for (i = 0; i < sz - 2; i++)
+		crc -= buffer[i];
+
+	return crc == 0;
+}
+
+static void adis16475_burst32_check(struct adis16475 *st)
+{
+	int ret;
+	struct adis *adis = &st->adis;
+
+	if (!st->info->has_burst32)
+		return;
+
+	if (st->lsb_flag && !st->burst32) {
+		const u16 en = ADIS16500_BURST32(1);
+
+		ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+					 ADIS16500_BURST32_MASK, en);
+		if (ret)
+			return;
+
+		st->burst32 = true;
+
+		/*
+		 * In 32-bit mode we need extra 2 bytes for all gyro
+		 * and accel channels.
+		 */
+		adis->burst_extra_len = 6 * sizeof(u16);
+		adis->xfer[1].len += 6 * sizeof(u16);
+		dev_dbg(&adis->spi->dev, "Enable burst32 mode, xfer:%d",
+			adis->xfer[1].len);
+
+	} else if (!st->lsb_flag && st->burst32) {
+		const u16 en = ADIS16500_BURST32(0);
+
+		ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+					 ADIS16500_BURST32_MASK, en);
+		if (ret)
+			return;
+
+		st->burst32 = false;
+
+		/* Remove the extra bits */
+		adis->burst_extra_len = 0;
+		adis->xfer[1].len -= 6 * sizeof(u16);
+		dev_dbg(&adis->spi->dev, "Disable burst32 mode, xfer:%d\n",
+			adis->xfer[1].len);
+	}
+}
+
+static irqreturn_t adis16475_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct adis16475 *st = iio_priv(indio_dev);
+	struct adis *adis = &st->adis;
+	int ret, bit, i = 0;
+	__be16 *buffer;
+	u16 crc;
+	bool valid;
+	/* offset until the first element after gyro and accel */
+	const u8 offset = st->burst32 ? 13 : 7;
+
+	ret = spi_sync(adis->spi, &adis->msg);
+	if (ret)
+		goto check_burst32;
+
+	buffer = adis->buffer;
+
+	crc = be16_to_cpu(buffer[offset + 2]);
+	valid = adis16475_validate_crc(adis->buffer, crc, st->burst32);
+	if (!valid) {
+		dev_err(&adis->spi->dev, "Invalid crc\n");
+		goto check_burst32;
+	}
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		/*
+		 * When burst mode is used, system flags is the first data
+		 * channel in the sequence, but the scan index is 7.
+		 */
+		switch (bit) {
+		case ADIS16475_SCAN_TEMP:
+			st->data[i++] = buffer[offset];
+			break;
+		case ADIS16475_SCAN_GYRO_X ... ADIS16475_SCAN_ACCEL_Z:
+			/*
+			 * The first 2 bytes on the received data are the
+			 * DIAG_STAT reg, hence the +1 offset here...
+			 */
+			if (st->burst32) {
+				/* upper 16 */
+				st->data[i++] = buffer[bit * 2 + 2];
+				/* lower 16 */
+				st->data[i++] = buffer[bit * 2 + 1];
+			} else {
+				st->data[i++] = buffer[bit + 1];
+				/*
+				 * Don't bother in doing the manual read if the
+				 * device supports burst32. burst32 will be
+				 * enabled in the next call to
+				 * adis16475_burst32_check()...
+				 */
+				if (st->lsb_flag && !st->info->has_burst32) {
+					u16 val = 0;
+					const u32 reg = ADIS16475_REG_X_GYRO_L +
+						bit * 4;
+
+					adis_read_reg_16(adis, reg, &val);
+					st->data[i++] = cpu_to_be16(val);
+				} else {
+					/* lower not used */
+					st->data[i++] = 0;
+				}
+			}
+			break;
+		}
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, st->data, pf->timestamp);
+check_burst32:
+	/*
+	 * We only check the burst mode at the end of the current capture since
+	 * it takes a full data ready cycle for the device to update the burst
+	 * array.
+	 */
+	adis16475_burst32_check(st);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static int adis16475_config_sync_mode(struct adis16475 *st)
+{
+	int ret;
+	struct device *dev = &st->adis.spi->dev;
+	const struct adis16475_sync *sync;
+	u32 sync_mode;
+
+	/* default to internal clk */
+	st->clk_freq = st->info->int_clk * 1000;
+
+	ret = device_property_read_u32(dev, "adi,sync-mode", &sync_mode);
+	if (ret)
+		return 0;
+
+	if (sync_mode >= st->info->num_sync) {
+		dev_err(dev, "Invalid sync mode: %u for %s\n", sync_mode,
+			st->info->name);
+		return -EINVAL;
+	}
+
+	sync = &st->info->sync[sync_mode];
+	st->sync_mode = sync->sync_mode;
+
+	/* All the other modes require external input signal */
+	if (sync->sync_mode != ADIS16475_SYNC_OUTPUT) {
+		struct clk *clk = devm_clk_get_enabled(dev, NULL);
+
+		if (IS_ERR(clk))
+			return PTR_ERR(clk);
+
+		st->clk_freq = clk_get_rate(clk);
+		if (st->clk_freq < sync->min_rate ||
+		    st->clk_freq > sync->max_rate) {
+			dev_err(dev,
+				"Clk rate:%u not in a valid range:[%u %u]\n",
+				st->clk_freq, sync->min_rate, sync->max_rate);
+			return -EINVAL;
+		}
+
+		if (sync->sync_mode == ADIS16475_SYNC_SCALED) {
+			u16 up_scale;
+
+			/*
+			 * In sync scaled mode, the IMU sample rate is the clk_freq * sync_scale.
+			 * Hence, default the IMU sample rate to the highest multiple of the input
+			 * clock lower than the IMU max sample rate. The optimal range is
+			 * 1900-2100 sps...
+			 */
+			up_scale = 2100 / st->clk_freq;
+
+			ret = __adis_write_reg_16(&st->adis,
+						  ADIS16475_REG_UP_SCALE,
+						  up_scale);
+			if (ret)
+				return ret;
+		}
+
+		st->clk_freq *= 1000;
+	}
+	/*
+	 * Keep in mind that the mask for the clk modes in adis1650*
+	 * chips is different (1100 instead of 11100). However, we
+	 * are not configuring BIT(4) in these chips and the default
+	 * value is 0, so we are fine in doing the below operations.
+	 * I'm keeping this for simplicity and avoiding extra variables
+	 * in chip_info.
+	 */
+	ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+				 ADIS16475_SYNC_MODE_MASK, sync->sync_mode);
+	if (ret)
+		return ret;
+
+	usleep_range(250, 260);
+
+	return 0;
+}
+
+static int adis16475_config_irq_pin(struct adis16475 *st)
+{
+	int ret;
+	struct irq_data *desc;
+	u32 irq_type;
+	u16 val = 0;
+	u8 polarity;
+	struct spi_device *spi = st->adis.spi;
+
+	desc = irq_get_irq_data(spi->irq);
+	if (!desc) {
+		dev_err(&spi->dev, "Could not find IRQ %d\n", spi->irq);
+		return -EINVAL;
+	}
+	/*
+	 * It is possible to configure the data ready polarity. Furthermore, we
+	 * need to update the adis struct if we want data ready as active low.
+	 */
+	irq_type = irqd_get_trigger_type(desc);
+	if (irq_type == IRQ_TYPE_EDGE_RISING) {
+		polarity = 1;
+		st->adis.irq_flag = IRQF_TRIGGER_RISING;
+	} else if (irq_type == IRQ_TYPE_EDGE_FALLING) {
+		polarity = 0;
+		st->adis.irq_flag = IRQF_TRIGGER_FALLING;
+	} else {
+		dev_err(&spi->dev, "Invalid interrupt type 0x%x specified\n",
+			irq_type);
+		return -EINVAL;
+	}
+
+	val = ADIS16475_MSG_CTRL_DR_POL(polarity);
+	ret = __adis_update_bits(&st->adis, ADIS16475_REG_MSG_CTRL,
+				 ADIS16475_MSG_CTRL_DR_POL_MASK, val);
+	if (ret)
+		return ret;
+	/*
+	 * There is a delay writing to any bits written to the MSC_CTRL
+	 * register. It should not be bigger than 200us, so 250 should be more
+	 * than enough!
+	 */
+	usleep_range(250, 260);
+
+	return 0;
+}
+
+static const struct of_device_id adis16475_of_match[] = {
+	{ .compatible = "adi,adis16470",
+		.data = &adis16475_chip_info[ADIS16470] },
+	{ .compatible = "adi,adis16475-1",
+		.data = &adis16475_chip_info[ADIS16475_1] },
+	{ .compatible = "adi,adis16475-2",
+		.data = &adis16475_chip_info[ADIS16475_2] },
+	{ .compatible = "adi,adis16475-3",
+		.data = &adis16475_chip_info[ADIS16475_3] },
+	{ .compatible = "adi,adis16477-1",
+		.data = &adis16475_chip_info[ADIS16477_1] },
+	{ .compatible = "adi,adis16477-2",
+		.data = &adis16475_chip_info[ADIS16477_2] },
+	{ .compatible = "adi,adis16477-3",
+		.data = &adis16475_chip_info[ADIS16477_3] },
+	{ .compatible = "adi,adis16465-1",
+		.data = &adis16475_chip_info[ADIS16465_1] },
+	{ .compatible = "adi,adis16465-2",
+		.data = &adis16475_chip_info[ADIS16465_2] },
+	{ .compatible = "adi,adis16465-3",
+		.data = &adis16475_chip_info[ADIS16465_3] },
+	{ .compatible = "adi,adis16467-1",
+		.data = &adis16475_chip_info[ADIS16467_1] },
+	{ .compatible = "adi,adis16467-2",
+		.data = &adis16475_chip_info[ADIS16467_2] },
+	{ .compatible = "adi,adis16467-3",
+		.data = &adis16475_chip_info[ADIS16467_3] },
+	{ .compatible = "adi,adis16500",
+		.data = &adis16475_chip_info[ADIS16500] },
+	{ .compatible = "adi,adis16505-1",
+		.data = &adis16475_chip_info[ADIS16505_1] },
+	{ .compatible = "adi,adis16505-2",
+		.data = &adis16475_chip_info[ADIS16505_2] },
+	{ .compatible = "adi,adis16505-3",
+		.data = &adis16475_chip_info[ADIS16505_3] },
+	{ .compatible = "adi,adis16507-1",
+		.data = &adis16475_chip_info[ADIS16507_1] },
+	{ .compatible = "adi,adis16507-2",
+		.data = &adis16475_chip_info[ADIS16507_2] },
+	{ .compatible = "adi,adis16507-3",
+		.data = &adis16475_chip_info[ADIS16507_3] },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, adis16475_of_match);
+
+static int adis16475_probe(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev;
+	struct adis16475 *st;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	st->info = device_get_match_data(&spi->dev);
+	if (!st->info)
+		return -EINVAL;
+
+	ret = adis_init(&st->adis, indio_dev, spi, &st->info->adis_data);
+	if (ret)
+		return ret;
+
+	indio_dev->name = st->info->name;
+	indio_dev->channels = st->info->channels;
+	indio_dev->num_channels = st->info->num_channels;
+	indio_dev->info = &adis16475_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = __adis_initial_startup(&st->adis);
+	if (ret)
+		return ret;
+
+	ret = adis16475_config_irq_pin(st);
+	if (ret)
+		return ret;
+
+	ret = adis16475_config_sync_mode(st);
+	if (ret)
+		return ret;
+
+	ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev,
+						 adis16475_trigger_handler);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	if (ret)
+		return ret;
+
+	adis16475_debugfs_init(indio_dev);
+
+	return 0;
+}
+
+static struct spi_driver adis16475_driver = {
+	.driver = {
+		.name = "adis16475",
+		.of_match_table = adis16475_of_match,
+	},
+	.probe = adis16475_probe,
+};
+module_spi_driver(adis16475_driver);
+
+MODULE_AUTHOR("Nuno Sa <nuno.sa@analog.com>");
+MODULE_DESCRIPTION("Analog Devices ADIS16475 IMU driver");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
index dac87f1001fd..fe520194a837 100644
--- a/drivers/iio/imu/adis16480.c
+++ b/drivers/iio/imu/adis16480.c
@@ -7,21 +7,23 @@
 
 #include <linux/clk.h>
 #include <linux/bitfield.h>
-#include <linux/of_irq.h>
 #include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/mutex.h>
+#include <linux/irq.h>
+#include <linux/math.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
-#include <linux/slab.h>
-#include <linux/sysfs.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
+#include <linux/lcm.h>
+#include <linux/property.h>
+#include <linux/swab.h>
+#include <linux/crc32.h>
 
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/imu/adis.h>
+#include <linux/iio/trigger_consumer.h>
 
 #include <linux/debugfs.h>
 
@@ -101,6 +103,12 @@
  * Available only for ADIS1649x devices
  */
 #define ADIS16495_REG_SYNC_SCALE		ADIS16480_REG(0x03, 0x10)
+#define ADIS16495_REG_BURST_CMD			ADIS16480_REG(0x00, 0x7C)
+#define ADIS16495_BURST_ID			0xA5A5
+/* total number of segments in burst */
+#define ADIS16495_BURST_MAX_DATA		20
+/* spi max speed in burst mode */
+#define ADIS16495_BURST_MAX_SPEED              6000000
 
 #define ADIS16480_REG_SERIAL_NUM		ADIS16480_REG(0x04, 0x20)
 
@@ -138,7 +146,8 @@ struct adis16480_chip_info {
 	unsigned int max_dec_rate;
 	const unsigned int *filter_freqs;
 	bool has_pps_clk_mode;
-	const struct adis_timeout *timeouts;
+	bool has_sleep_cnt;
+	const struct adis_data adis_data;
 };
 
 enum adis16480_int_pin {
@@ -161,6 +170,8 @@ struct adis16480 {
 	struct clk *ext_clk;
 	enum adis16480_clock_mode clk_mode;
 	unsigned int clk_freq;
+	/* Alignment needed for the timestamp */
+	__be16 data[ADIS16495_BURST_MAX_DATA] __aligned(8);
 };
 
 static const char * const adis16480_int_pin_names[4] = {
@@ -170,6 +181,11 @@ static const char * const adis16480_int_pin_names[4] = {
 	[ADIS16480_PIN_DIO4] = "DIO4",
 };
 
+static bool low_rate_allow;
+module_param(low_rate_allow, bool, 0444);
+MODULE_PARM_DESC(low_rate_allow,
+		 "Allow IMU rates below the minimum advisable when external clk is used in PPS mode (default: N)");
+
 #ifdef CONFIG_DEBUG_FS
 
 static ssize_t adis16480_show_firmware_revision(struct file *file,
@@ -284,22 +300,18 @@ DEFINE_DEBUGFS_ATTRIBUTE(adis16480_flash_count_fops,
 static int adis16480_debugfs_init(struct iio_dev *indio_dev)
 {
 	struct adis16480 *adis16480 = iio_priv(indio_dev);
+	struct dentry *d = iio_get_debugfs_dentry(indio_dev);
 
 	debugfs_create_file_unsafe("firmware_revision", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_firmware_revision_fops);
+		d, adis16480, &adis16480_firmware_revision_fops);
 	debugfs_create_file_unsafe("firmware_date", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_firmware_date_fops);
+		d, adis16480, &adis16480_firmware_date_fops);
 	debugfs_create_file_unsafe("serial_number", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_serial_number_fops);
+		d, adis16480, &adis16480_serial_number_fops);
 	debugfs_create_file_unsafe("product_id", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_product_id_fops);
+		d, adis16480, &adis16480_product_id_fops);
 	debugfs_create_file_unsafe("flash_count", 0400,
-		indio_dev->debugfs_dentry, adis16480,
-		&adis16480_flash_count_fops);
+		d, adis16480, &adis16480_flash_count_fops);
 
 	return 0;
 }
@@ -316,7 +328,8 @@ static int adis16480_debugfs_init(struct iio_dev *indio_dev)
 static int adis16480_set_freq(struct iio_dev *indio_dev, int val, int val2)
 {
 	struct adis16480 *st = iio_priv(indio_dev);
-	unsigned int t, reg;
+	unsigned int t, sample_rate = st->clk_freq;
+	int ret;
 
 	if (val < 0 || val2 < 0)
 		return -EINVAL;
@@ -325,28 +338,65 @@ static int adis16480_set_freq(struct iio_dev *indio_dev, int val, int val2)
 	if (t == 0)
 		return -EINVAL;
 
+	adis_dev_lock(&st->adis);
 	/*
-	 * When using PPS mode, the rate of data collection is equal to the
-	 * product of the external clock frequency and the scale factor in the
-	 * SYNC_SCALE register.
-	 * When using sync mode, or internal clock, the output data rate is
-	 * equal with  the clock frequency divided by DEC_RATE + 1.
+	 * When using PPS mode, the input clock needs to be scaled so that we have an IMU
+	 * sample rate between (optimally) 4000 and 4250. After this, we can use the
+	 * decimation filter to lower the sampling rate in order to get what the user wants.
+	 * Optimally, the user sample rate is a multiple of both the IMU sample rate and
+	 * the input clock. Hence, calculating the sync_scale dynamically gives us better
+	 * chances of achieving a perfect/integer value for DEC_RATE. The math here is:
+	 *	1. lcm of the input clock and the desired output rate.
+	 *	2. get the highest multiple of the previous result lower than the adis max rate.
+	 *	3. The last result becomes the IMU sample rate. Use that to calculate SYNC_SCALE
+	 *	   and DEC_RATE (to get the user output rate)
 	 */
 	if (st->clk_mode == ADIS16480_CLK_PPS) {
-		t = t / st->clk_freq;
-		reg = ADIS16495_REG_SYNC_SCALE;
-	} else {
-		t = st->clk_freq / t;
-		reg = ADIS16480_REG_DEC_RATE;
+		unsigned long scaled_rate = lcm(st->clk_freq, t);
+		int sync_scale;
+
+		/*
+		 * If lcm is bigger than the IMU maximum sampling rate there's no perfect
+		 * solution. In this case, we get the highest multiple of the input clock
+		 * lower than the IMU max sample rate.
+		 */
+		if (scaled_rate > st->chip_info->int_clk)
+			scaled_rate = st->chip_info->int_clk / st->clk_freq * st->clk_freq;
+		else
+			scaled_rate = st->chip_info->int_clk / scaled_rate * scaled_rate;
+
+		/*
+		 * This is not an hard requirement but it's not advised to run the IMU
+		 * with a sample rate lower than 4000Hz due to possible undersampling
+		 * issues. However, there are users that might really want to take the risk.
+		 * Hence, we provide a module parameter for them. If set, we allow sample
+		 * rates lower than 4KHz. By default, we won't allow this and we just roundup
+		 * the rate to the next multiple of the input clock bigger than 4KHz. This
+		 * is done like this as in some cases (when DEC_RATE is 0) might give
+		 * us the closest value to the one desired by the user...
+		 */
+		if (scaled_rate < 4000000 && !low_rate_allow)
+			scaled_rate = roundup(4000000, st->clk_freq);
+
+		sync_scale = scaled_rate / st->clk_freq;
+		ret = __adis_write_reg_16(&st->adis, ADIS16495_REG_SYNC_SCALE, sync_scale);
+		if (ret)
+			goto error;
+
+		sample_rate = scaled_rate;
 	}
 
+	t = DIV_ROUND_CLOSEST(sample_rate, t);
+	if (t)
+		t--;
+
 	if (t > st->chip_info->max_dec_rate)
 		t = st->chip_info->max_dec_rate;
 
-	if ((t != 0) && (st->clk_mode != ADIS16480_CLK_PPS))
-		t--;
-
-	return adis_write_reg_16(&st->adis, reg, t);
+	ret = __adis_write_reg_16(&st->adis, ADIS16480_REG_DEC_RATE, t);
+error:
+	adis_dev_unlock(&st->adis);
+	return ret;
 }
 
 static int adis16480_get_freq(struct iio_dev *indio_dev, int *val, int *val2)
@@ -354,34 +404,35 @@ static int adis16480_get_freq(struct iio_dev *indio_dev, int *val, int *val2)
 	struct adis16480 *st = iio_priv(indio_dev);
 	uint16_t t;
 	int ret;
-	unsigned int freq;
-	unsigned int reg;
+	unsigned int freq, sample_rate = st->clk_freq;
 
-	if (st->clk_mode == ADIS16480_CLK_PPS)
-		reg = ADIS16495_REG_SYNC_SCALE;
-	else
-		reg = ADIS16480_REG_DEC_RATE;
+	adis_dev_lock(&st->adis);
 
-	ret = adis_read_reg_16(&st->adis, reg, &t);
+	if (st->clk_mode == ADIS16480_CLK_PPS) {
+		u16 sync_scale;
+
+		ret = __adis_read_reg_16(&st->adis, ADIS16495_REG_SYNC_SCALE, &sync_scale);
+		if (ret)
+			goto error;
+
+		sample_rate = st->clk_freq * sync_scale;
+	}
+
+	ret = __adis_read_reg_16(&st->adis, ADIS16480_REG_DEC_RATE, &t);
 	if (ret)
-		return ret;
+		goto error;
 
-	/*
-	 * When using PPS mode, the rate of data collection is equal to the
-	 * product of the external clock frequency and the scale factor in the
-	 * SYNC_SCALE register.
-	 * When using sync mode, or internal clock, the output data rate is
-	 * equal with  the clock frequency divided by DEC_RATE + 1.
-	 */
-	if (st->clk_mode == ADIS16480_CLK_PPS)
-		freq = st->clk_freq * t;
-	else
-		freq = st->clk_freq / (t + 1);
+	adis_dev_unlock(&st->adis);
+
+	freq = DIV_ROUND_CLOSEST(sample_rate, (t + 1));
 
 	*val = freq / 1000;
 	*val2 = (freq % 1000) * 1000;
 
 	return IIO_VAL_INT_PLUS_MICRO;
+error:
+	adis_dev_unlock(&st->adis);
+	return ret;
 }
 
 enum {
@@ -556,7 +607,6 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
 	const struct iio_chan_spec *chan, unsigned int freq)
 {
 	struct adis16480 *st = iio_priv(indio_dev);
-	struct mutex *slock = &st->adis.state_lock;
 	unsigned int enable_mask, offset, reg;
 	unsigned int diff, best_diff;
 	unsigned int i, best_freq;
@@ -567,7 +617,7 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
 	offset = ad16480_filter_data[chan->scan_index][1];
 	enable_mask = BIT(offset + 2);
 
-	mutex_lock(slock);
+	adis_dev_lock(&st->adis);
 
 	ret = __adis_read_reg_16(&st->adis, reg, &val);
 	if (ret)
@@ -595,7 +645,7 @@ static int adis16480_set_filter_freq(struct iio_dev *indio_dev,
 
 	ret = __adis_write_reg_16(&st->adis, reg, val);
 out_unlock:
-	mutex_unlock(slock);
+	adis_dev_unlock(&st->adis);
 
 	return ret;
 }
@@ -796,6 +846,61 @@ enum adis16480_variant {
 	ADIS16497_3,
 };
 
+#define ADIS16480_DIAG_STAT_XGYRO_FAIL 0
+#define ADIS16480_DIAG_STAT_YGYRO_FAIL 1
+#define ADIS16480_DIAG_STAT_ZGYRO_FAIL 2
+#define ADIS16480_DIAG_STAT_XACCL_FAIL 3
+#define ADIS16480_DIAG_STAT_YACCL_FAIL 4
+#define ADIS16480_DIAG_STAT_ZACCL_FAIL 5
+#define ADIS16480_DIAG_STAT_XMAGN_FAIL 8
+#define ADIS16480_DIAG_STAT_YMAGN_FAIL 9
+#define ADIS16480_DIAG_STAT_ZMAGN_FAIL 10
+#define ADIS16480_DIAG_STAT_BARO_FAIL 11
+
+static const char * const adis16480_status_error_msgs[] = {
+	[ADIS16480_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
+	[ADIS16480_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
+	[ADIS16480_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
+	[ADIS16480_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
+	[ADIS16480_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
+	[ADIS16480_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
+	[ADIS16480_DIAG_STAT_XMAGN_FAIL] = "X-axis magnetometer self-test failure",
+	[ADIS16480_DIAG_STAT_YMAGN_FAIL] = "Y-axis magnetometer self-test failure",
+	[ADIS16480_DIAG_STAT_ZMAGN_FAIL] = "Z-axis magnetometer self-test failure",
+	[ADIS16480_DIAG_STAT_BARO_FAIL] = "Barometer self-test failure",
+};
+
+static int adis16480_enable_irq(struct adis *adis, bool enable);
+
+#define ADIS16480_DATA(_prod_id, _timeouts, _burst_len)			\
+{									\
+	.diag_stat_reg = ADIS16480_REG_DIAG_STS,			\
+	.glob_cmd_reg = ADIS16480_REG_GLOB_CMD,				\
+	.prod_id_reg = ADIS16480_REG_PROD_ID,				\
+	.prod_id = (_prod_id),						\
+	.has_paging = true,						\
+	.read_delay = 5,						\
+	.write_delay = 5,						\
+	.self_test_mask = BIT(1),					\
+	.self_test_reg = ADIS16480_REG_GLOB_CMD,			\
+	.status_error_msgs = adis16480_status_error_msgs,		\
+	.status_error_mask = BIT(ADIS16480_DIAG_STAT_XGYRO_FAIL) |	\
+		BIT(ADIS16480_DIAG_STAT_YGYRO_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_ZGYRO_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_XACCL_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_YACCL_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_ZACCL_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_XMAGN_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_YMAGN_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_ZMAGN_FAIL) |			\
+		BIT(ADIS16480_DIAG_STAT_BARO_FAIL),			\
+	.enable_irq = adis16480_enable_irq,				\
+	.timeouts = (_timeouts),					\
+	.burst_reg_cmd = ADIS16495_REG_BURST_CMD,			\
+	.burst_len = (_burst_len),					\
+	.burst_max_speed_hz = ADIS16495_BURST_MAX_SPEED			\
+}
+
 static const struct adis_timeout adis16485_timeouts = {
 	.reset_ms = 560,
 	.sw_reset_ms = 120,
@@ -837,8 +942,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.temp_scale = 5650, /* 5.65 milli degree Celsius */
 		.int_clk = 2460000,
 		.max_dec_rate = 2048,
+		.has_sleep_cnt = true,
 		.filter_freqs = adis16480_def_filter_freqs,
-		.timeouts = &adis16485_timeouts,
+		.adis_data = ADIS16480_DATA(16375, &adis16485_timeouts, 0),
 	},
 	[ADIS16480] = {
 		.channels = adis16480_channels,
@@ -850,8 +956,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.temp_scale = 5650, /* 5.65 milli degree Celsius */
 		.int_clk = 2460000,
 		.max_dec_rate = 2048,
+		.has_sleep_cnt = true,
 		.filter_freqs = adis16480_def_filter_freqs,
-		.timeouts = &adis16480_timeouts,
+		.adis_data = ADIS16480_DATA(16480, &adis16480_timeouts, 0),
 	},
 	[ADIS16485] = {
 		.channels = adis16485_channels,
@@ -863,8 +970,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.temp_scale = 5650, /* 5.65 milli degree Celsius */
 		.int_clk = 2460000,
 		.max_dec_rate = 2048,
+		.has_sleep_cnt = true,
 		.filter_freqs = adis16480_def_filter_freqs,
-		.timeouts = &adis16485_timeouts,
+		.adis_data = ADIS16480_DATA(16485, &adis16485_timeouts, 0),
 	},
 	[ADIS16488] = {
 		.channels = adis16480_channels,
@@ -876,8 +984,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.temp_scale = 5650, /* 5.65 milli degree Celsius */
 		.int_clk = 2460000,
 		.max_dec_rate = 2048,
+		.has_sleep_cnt = true,
 		.filter_freqs = adis16480_def_filter_freqs,
-		.timeouts = &adis16485_timeouts,
+		.adis_data = ADIS16480_DATA(16488, &adis16485_timeouts, 0),
 	},
 	[ADIS16490] = {
 		.channels = adis16485_channels,
@@ -891,7 +1000,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_timeouts,
+		.adis_data = ADIS16480_DATA(16490, &adis16495_timeouts, 0),
 	},
 	[ADIS16495_1] = {
 		.channels = adis16485_channels,
@@ -905,7 +1014,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_1_timeouts,
+		/* 20 elements of 16bits */
+		.adis_data = ADIS16480_DATA(16495, &adis16495_1_timeouts,
+					    ADIS16495_BURST_MAX_DATA * 2),
 	},
 	[ADIS16495_2] = {
 		.channels = adis16485_channels,
@@ -919,7 +1030,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_1_timeouts,
+		/* 20 elements of 16bits */
+		.adis_data = ADIS16480_DATA(16495, &adis16495_1_timeouts,
+					    ADIS16495_BURST_MAX_DATA * 2),
 	},
 	[ADIS16495_3] = {
 		.channels = adis16485_channels,
@@ -933,7 +1046,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_1_timeouts,
+		/* 20 elements of 16bits */
+		.adis_data = ADIS16480_DATA(16495, &adis16495_1_timeouts,
+					    ADIS16495_BURST_MAX_DATA * 2),
 	},
 	[ADIS16497_1] = {
 		.channels = adis16485_channels,
@@ -947,7 +1062,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_1_timeouts,
+		/* 20 elements of 16bits */
+		.adis_data = ADIS16480_DATA(16497, &adis16495_1_timeouts,
+					    ADIS16495_BURST_MAX_DATA * 2),
 	},
 	[ADIS16497_2] = {
 		.channels = adis16485_channels,
@@ -961,7 +1078,9 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_1_timeouts,
+		/* 20 elements of 16bits */
+		.adis_data = ADIS16480_DATA(16497, &adis16495_1_timeouts,
+					    ADIS16495_BURST_MAX_DATA * 2),
 	},
 	[ADIS16497_3] = {
 		.channels = adis16485_channels,
@@ -975,10 +1094,119 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
 		.max_dec_rate = 4250,
 		.filter_freqs = adis16495_def_filter_freqs,
 		.has_pps_clk_mode = true,
-		.timeouts = &adis16495_1_timeouts,
+		/* 20 elements of 16bits */
+		.adis_data = ADIS16480_DATA(16497, &adis16495_1_timeouts,
+					    ADIS16495_BURST_MAX_DATA * 2),
 	},
 };
 
+static bool adis16480_validate_crc(const u16 *buf, const u8 n_elem, const u32 crc)
+{
+	u32 crc_calc;
+	u16 crc_buf[15];
+	int j;
+
+	for (j = 0; j < n_elem; j++)
+		crc_buf[j] = swab16(buf[j]);
+
+	crc_calc = crc32(~0, crc_buf, n_elem * 2);
+	crc_calc ^= ~0;
+
+	return (crc == crc_calc);
+}
+
+static irqreturn_t adis16480_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct adis16480 *st = iio_priv(indio_dev);
+	struct adis *adis = &st->adis;
+	struct device *dev = &adis->spi->dev;
+	int ret, bit, offset, i = 0;
+	__be16 *buffer;
+	u32 crc;
+	bool valid;
+
+	adis_dev_lock(adis);
+	if (adis->current_page != 0) {
+		adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
+		adis->tx[1] = 0;
+		ret = spi_write(adis->spi, adis->tx, 2);
+		if (ret) {
+			dev_err(dev, "Failed to change device page: %d\n", ret);
+			adis_dev_unlock(adis);
+			goto irq_done;
+		}
+
+		adis->current_page = 0;
+	}
+
+	ret = spi_sync(adis->spi, &adis->msg);
+	if (ret) {
+		dev_err(dev, "Failed to read data: %d\n", ret);
+		adis_dev_unlock(adis);
+		goto irq_done;
+	}
+
+	adis_dev_unlock(adis);
+
+	/*
+	 * After making the burst request, the response can have one or two
+	 * 16-bit responses containing the BURST_ID depending on the sclk. If
+	 * clk > 3.6MHz, then we will have two BURST_ID in a row. If clk < 3MHZ,
+	 * we have only one. To manage that variation, we use the transition from the
+	 * BURST_ID to the SYS_E_FLAG register, which will not be equal to 0xA5A5. If
+	 * we not find this variation in the first 4 segments, then the data should
+	 * not be valid.
+	 */
+	buffer = adis->buffer;
+	for (offset = 0; offset < 4; offset++) {
+		u16 curr = be16_to_cpu(buffer[offset]);
+		u16 next = be16_to_cpu(buffer[offset + 1]);
+
+		if (curr == ADIS16495_BURST_ID && next != ADIS16495_BURST_ID) {
+			offset++;
+			break;
+		}
+	}
+
+	if (offset == 4) {
+		dev_err(dev, "Invalid burst data\n");
+		goto irq_done;
+	}
+
+	crc = be16_to_cpu(buffer[offset + 16]) << 16 | be16_to_cpu(buffer[offset + 15]);
+	valid = adis16480_validate_crc((u16 *)&buffer[offset], 15, crc);
+	if (!valid) {
+		dev_err(dev, "Invalid crc\n");
+		goto irq_done;
+	}
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask, indio_dev->masklength) {
+		/*
+		 * When burst mode is used, temperature is the first data
+		 * channel in the sequence, but the temperature scan index
+		 * is 10.
+		 */
+		switch (bit) {
+		case ADIS16480_SCAN_TEMP:
+			st->data[i++] = buffer[offset + 1];
+			break;
+		case ADIS16480_SCAN_GYRO_X ... ADIS16480_SCAN_ACCEL_Z:
+			/* The lower register data is sequenced first */
+			st->data[i++] = buffer[2 * bit + offset + 3];
+			st->data[i++] = buffer[2 * bit + offset + 2];
+			break;
+		}
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, st->data, pf->timestamp);
+irq_done:
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
 static const struct iio_info adis16480_info = {
 	.read_raw = &adis16480_read_raw,
 	.write_raw = &adis16480_write_raw,
@@ -989,12 +1217,12 @@ static const struct iio_info adis16480_info = {
 static int adis16480_stop_device(struct iio_dev *indio_dev)
 {
 	struct adis16480 *st = iio_priv(indio_dev);
+	struct device *dev = &st->adis.spi->dev;
 	int ret;
 
 	ret = adis_write_reg_16(&st->adis, ADIS16480_REG_SLP_CNT, BIT(9));
 	if (ret)
-		dev_err(&indio_dev->dev,
-			"Could not power down device: %d\n", ret);
+		dev_err(dev, "Could not power down device: %d\n", ret);
 
 	return ret;
 }
@@ -1014,90 +1242,10 @@ static int adis16480_enable_irq(struct adis *adis, bool enable)
 	return __adis_write_reg_16(adis, ADIS16480_REG_FNCTIO_CTRL, val);
 }
 
-static int adis16480_initial_setup(struct iio_dev *indio_dev)
-{
-	struct adis16480 *st = iio_priv(indio_dev);
-	uint16_t prod_id;
-	unsigned int device_id;
-	int ret;
-
-	adis_reset(&st->adis);
-	msleep(70);
-
-	ret = adis_write_reg_16(&st->adis, ADIS16480_REG_GLOB_CMD, BIT(1));
-	if (ret)
-		return ret;
-	msleep(30);
-
-	ret = adis_check_status(&st->adis);
-	if (ret)
-		return ret;
-
-	ret = adis_read_reg_16(&st->adis, ADIS16480_REG_PROD_ID, &prod_id);
-	if (ret)
-		return ret;
-
-	ret = sscanf(indio_dev->name, "adis%u\n", &device_id);
-	if (ret != 1)
-		return -EINVAL;
-
-	if (prod_id != device_id)
-		dev_warn(&indio_dev->dev, "Device ID(%u) and product ID(%u) do not match.",
-				device_id, prod_id);
-
-	return 0;
-}
-
-#define ADIS16480_DIAG_STAT_XGYRO_FAIL 0
-#define ADIS16480_DIAG_STAT_YGYRO_FAIL 1
-#define ADIS16480_DIAG_STAT_ZGYRO_FAIL 2
-#define ADIS16480_DIAG_STAT_XACCL_FAIL 3
-#define ADIS16480_DIAG_STAT_YACCL_FAIL 4
-#define ADIS16480_DIAG_STAT_ZACCL_FAIL 5
-#define ADIS16480_DIAG_STAT_XMAGN_FAIL 8
-#define ADIS16480_DIAG_STAT_YMAGN_FAIL 9
-#define ADIS16480_DIAG_STAT_ZMAGN_FAIL 10
-#define ADIS16480_DIAG_STAT_BARO_FAIL 11
-
-static const char * const adis16480_status_error_msgs[] = {
-	[ADIS16480_DIAG_STAT_XGYRO_FAIL] = "X-axis gyroscope self-test failure",
-	[ADIS16480_DIAG_STAT_YGYRO_FAIL] = "Y-axis gyroscope self-test failure",
-	[ADIS16480_DIAG_STAT_ZGYRO_FAIL] = "Z-axis gyroscope self-test failure",
-	[ADIS16480_DIAG_STAT_XACCL_FAIL] = "X-axis accelerometer self-test failure",
-	[ADIS16480_DIAG_STAT_YACCL_FAIL] = "Y-axis accelerometer self-test failure",
-	[ADIS16480_DIAG_STAT_ZACCL_FAIL] = "Z-axis accelerometer self-test failure",
-	[ADIS16480_DIAG_STAT_XMAGN_FAIL] = "X-axis magnetometer self-test failure",
-	[ADIS16480_DIAG_STAT_YMAGN_FAIL] = "Y-axis magnetometer self-test failure",
-	[ADIS16480_DIAG_STAT_ZMAGN_FAIL] = "Z-axis magnetometer self-test failure",
-	[ADIS16480_DIAG_STAT_BARO_FAIL] = "Barometer self-test failure",
-};
-
-static const struct adis_data adis16480_data = {
-	.diag_stat_reg = ADIS16480_REG_DIAG_STS,
-	.glob_cmd_reg = ADIS16480_REG_GLOB_CMD,
-	.has_paging = true,
-
-	.read_delay = 5,
-	.write_delay = 5,
-
-	.status_error_msgs = adis16480_status_error_msgs,
-	.status_error_mask = BIT(ADIS16480_DIAG_STAT_XGYRO_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_YGYRO_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_ZGYRO_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_XACCL_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_YACCL_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_ZACCL_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_XMAGN_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_YMAGN_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_ZMAGN_FAIL) |
-		BIT(ADIS16480_DIAG_STAT_BARO_FAIL),
-
-	.enable_irq = adis16480_enable_irq,
-};
-
-static int adis16480_config_irq_pin(struct device_node *of_node,
-				    struct adis16480 *st)
+static int adis16480_config_irq_pin(struct adis16480 *st)
 {
+	struct device *dev = &st->adis.spi->dev;
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct irq_data *desc;
 	enum adis16480_int_pin pin;
 	unsigned int irq_type;
@@ -1106,7 +1254,7 @@ static int adis16480_config_irq_pin(struct device_node *of_node,
 
 	desc = irq_get_irq_data(st->adis.spi->irq);
 	if (!desc) {
-		dev_err(&st->adis.spi->dev, "Could not find IRQ %d\n", irq);
+		dev_err(dev, "Could not find IRQ %d\n", irq);
 		return -EINVAL;
 	}
 
@@ -1123,7 +1271,7 @@ static int adis16480_config_irq_pin(struct device_node *of_node,
 	 */
 	pin = ADIS16480_PIN_DIO1;
 	for (i = 0; i < ARRAY_SIZE(adis16480_int_pin_names); i++) {
-		irq = of_irq_get_byname(of_node, adis16480_int_pin_names[i]);
+		irq = fwnode_irq_get_byname(fwnode, adis16480_int_pin_names[i]);
 		if (irq > 0) {
 			pin = i;
 			break;
@@ -1135,31 +1283,30 @@ static int adis16480_config_irq_pin(struct device_node *of_node,
 	/*
 	 * Get the interrupt line behaviour. The data ready polarity can be
 	 * configured as positive or negative, corresponding to
-	 * IRQF_TRIGGER_RISING or IRQF_TRIGGER_FALLING respectively.
+	 * IRQ_TYPE_EDGE_RISING or IRQ_TYPE_EDGE_FALLING respectively.
 	 */
 	irq_type = irqd_get_trigger_type(desc);
-	if (irq_type == IRQF_TRIGGER_RISING) { /* Default */
+	if (irq_type == IRQ_TYPE_EDGE_RISING) { /* Default */
 		val |= ADIS16480_DRDY_POL(1);
-	} else if (irq_type == IRQF_TRIGGER_FALLING) {
+	} else if (irq_type == IRQ_TYPE_EDGE_FALLING) {
 		val |= ADIS16480_DRDY_POL(0);
 	} else {
-		dev_err(&st->adis.spi->dev,
-			"Invalid interrupt type 0x%x specified\n", irq_type);
+		dev_err(dev, "Invalid interrupt type 0x%x specified\n", irq_type);
 		return -EINVAL;
 	}
 	/* Write the data ready configuration to the FNCTIO_CTRL register */
 	return adis_write_reg_16(&st->adis, ADIS16480_REG_FNCTIO_CTRL, val);
 }
 
-static int adis16480_of_get_ext_clk_pin(struct adis16480 *st,
-					struct device_node *of_node)
+static int adis16480_fw_get_ext_clk_pin(struct adis16480 *st)
 {
+	struct device *dev = &st->adis.spi->dev;
 	const char *ext_clk_pin;
 	enum adis16480_int_pin pin;
 	int i;
 
 	pin = ADIS16480_PIN_DIO2;
-	if (of_property_read_string(of_node, "adi,ext-clk-pin", &ext_clk_pin))
+	if (device_property_read_string(dev, "adi,ext-clk-pin", &ext_clk_pin))
 		goto clk_input_not_found;
 
 	for (i = 0; i < ARRAY_SIZE(adis16480_int_pin_names); i++) {
@@ -1168,15 +1315,13 @@ static int adis16480_of_get_ext_clk_pin(struct adis16480 *st,
 	}
 
 clk_input_not_found:
-	dev_info(&st->adis.spi->dev,
-		"clk input line not specified, using DIO2\n");
+	dev_info(dev, "clk input line not specified, using DIO2\n");
 	return pin;
 }
 
-static int adis16480_ext_clk_config(struct adis16480 *st,
-				    struct device_node *of_node,
-				    bool enable)
+static int adis16480_ext_clk_config(struct adis16480 *st, bool enable)
 {
+	struct device *dev = &st->adis.spi->dev;
 	unsigned int mode, mask;
 	enum adis16480_int_pin pin;
 	uint16_t val;
@@ -1186,16 +1331,14 @@ static int adis16480_ext_clk_config(struct adis16480 *st,
 	if (ret)
 		return ret;
 
-	pin = adis16480_of_get_ext_clk_pin(st, of_node);
+	pin = adis16480_fw_get_ext_clk_pin(st);
 	/*
 	 * Each DIOx pin supports only one function at a time. When a single pin
 	 * has two assignments, the enable bit for a lower priority function
 	 * automatically resets to zero (disabling the lower priority function).
 	 */
 	if (pin == ADIS16480_DRDY_SEL(val))
-		dev_warn(&st->adis.spi->dev,
-			"DIO%x pin supports only one function at a time\n",
-			pin + 1);
+		dev_warn(dev, "DIO%x pin supports only one function at a time\n", pin + 1);
 
 	mode = ADIS16480_SYNC_EN(enable) | ADIS16480_SYNC_SEL(pin);
 	mask = ADIS16480_SYNC_EN_MSK | ADIS16480_SYNC_SEL_MSK;
@@ -1217,83 +1360,80 @@ static int adis16480_ext_clk_config(struct adis16480 *st,
 
 static int adis16480_get_ext_clocks(struct adis16480 *st)
 {
-	st->clk_mode = ADIS16480_CLK_INT;
-	st->ext_clk = devm_clk_get(&st->adis.spi->dev, "sync");
-	if (!IS_ERR_OR_NULL(st->ext_clk)) {
+	struct device *dev = &st->adis.spi->dev;
+
+	st->ext_clk = devm_clk_get_optional(dev, "sync");
+	if (IS_ERR(st->ext_clk))
+		return dev_err_probe(dev, PTR_ERR(st->ext_clk), "failed to get ext clk\n");
+	if (st->ext_clk) {
 		st->clk_mode = ADIS16480_CLK_SYNC;
 		return 0;
 	}
 
-	if (PTR_ERR(st->ext_clk) != -ENOENT) {
-		dev_err(&st->adis.spi->dev, "failed to get ext clk\n");
-		return PTR_ERR(st->ext_clk);
-	}
-
 	if (st->chip_info->has_pps_clk_mode) {
-		st->ext_clk = devm_clk_get(&st->adis.spi->dev, "pps");
-		if (!IS_ERR_OR_NULL(st->ext_clk)) {
+		st->ext_clk = devm_clk_get_optional(dev, "pps");
+		if (IS_ERR(st->ext_clk))
+			return dev_err_probe(dev, PTR_ERR(st->ext_clk), "failed to get ext clk\n");
+		if (st->ext_clk) {
 			st->clk_mode = ADIS16480_CLK_PPS;
 			return 0;
 		}
-
-		if (PTR_ERR(st->ext_clk) != -ENOENT) {
-			dev_err(&st->adis.spi->dev, "failed to get ext clk\n");
-			return PTR_ERR(st->ext_clk);
-		}
 	}
 
+	st->clk_mode = ADIS16480_CLK_INT;
 	return 0;
 }
 
-static struct adis_data *adis16480_adis_data_alloc(struct adis16480 *st,
-						   struct device *dev)
+static void adis16480_stop(void *data)
 {
-	struct adis_data *data;
-
-	data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
-	if (!data)
-		return ERR_PTR(-ENOMEM);
-
-	memcpy(data, &adis16480_data, sizeof(*data));
-
-	data->timeouts = st->chip_info->timeouts;
+	adis16480_stop_device(data);
+}
 
-	return data;
+static void adis16480_clk_disable(void *data)
+{
+	clk_disable_unprepare(data);
 }
 
 static int adis16480_probe(struct spi_device *spi)
 {
 	const struct spi_device_id *id = spi_get_device_id(spi);
 	const struct adis_data *adis16480_data;
+	irq_handler_t trigger_handler = NULL;
+	struct device *dev = &spi->dev;
 	struct iio_dev *indio_dev;
 	struct adis16480 *st;
 	int ret;
 
-	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
 	if (indio_dev == NULL)
 		return -ENOMEM;
 
-	spi_set_drvdata(spi, indio_dev);
-
 	st = iio_priv(indio_dev);
 
 	st->chip_info = &adis16480_chip_info[id->driver_data];
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->channels = st->chip_info->channels;
 	indio_dev->num_channels = st->chip_info->num_channels;
 	indio_dev->info = &adis16480_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	adis16480_data = adis16480_adis_data_alloc(st, &spi->dev);
-	if (IS_ERR(adis16480_data))
-		return PTR_ERR(adis16480_data);
+	adis16480_data = &st->chip_info->adis_data;
 
 	ret = adis_init(&st->adis, indio_dev, spi, adis16480_data);
 	if (ret)
 		return ret;
 
-	ret = adis16480_config_irq_pin(spi->dev.of_node, st);
+	ret = __adis_initial_startup(&st->adis);
+	if (ret)
+		return ret;
+
+	if (st->chip_info->has_sleep_cnt) {
+		ret = devm_add_action_or_reset(dev, adis16480_stop, indio_dev);
+		if (ret)
+			return ret;
+	}
+
+	ret = adis16480_config_irq_pin(st);
 	if (ret)
 		return ret;
 
@@ -1301,54 +1441,51 @@ static int adis16480_probe(struct spi_device *spi)
 	if (ret)
 		return ret;
 
-	if (!IS_ERR_OR_NULL(st->ext_clk)) {
-		ret = adis16480_ext_clk_config(st, spi->dev.of_node, true);
+	if (st->ext_clk) {
+		ret = adis16480_ext_clk_config(st, true);
+		if (ret)
+			return ret;
+
+		ret = devm_add_action_or_reset(dev, adis16480_clk_disable, st->ext_clk);
 		if (ret)
 			return ret;
 
 		st->clk_freq = clk_get_rate(st->ext_clk);
 		st->clk_freq *= 1000; /* micro */
+		if (st->clk_mode == ADIS16480_CLK_PPS) {
+			u16 sync_scale;
+
+			/*
+			 * In PPS mode, the IMU sample rate is the clk_freq * sync_scale. Hence,
+			 * default the IMU sample rate to the highest multiple of the input clock
+			 * lower than the IMU max sample rate. The internal sample rate is the
+			 * max...
+			 */
+			sync_scale = st->chip_info->int_clk / st->clk_freq;
+			ret = __adis_write_reg_16(&st->adis, ADIS16495_REG_SYNC_SCALE, sync_scale);
+			if (ret)
+				return ret;
+		}
 	} else {
 		st->clk_freq = st->chip_info->int_clk;
 	}
 
-	ret = adis_setup_buffer_and_trigger(&st->adis, indio_dev, NULL);
-	if (ret)
-		goto error_clk_disable_unprepare;
+	/* Only use our trigger handler if burst mode is supported */
+	if (adis16480_data->burst_len)
+		trigger_handler = adis16480_trigger_handler;
 
-	ret = adis16480_initial_setup(indio_dev);
+	ret = devm_adis_setup_buffer_and_trigger(&st->adis, indio_dev,
+						 trigger_handler);
 	if (ret)
-		goto error_cleanup_buffer;
+		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret)
-		goto error_stop_device;
+		return ret;
 
 	adis16480_debugfs_init(indio_dev);
 
 	return 0;
-
-error_stop_device:
-	adis16480_stop_device(indio_dev);
-error_cleanup_buffer:
-	adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
-error_clk_disable_unprepare:
-	clk_disable_unprepare(st->ext_clk);
-	return ret;
-}
-
-static int adis16480_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	struct adis16480 *st = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	adis16480_stop_device(indio_dev);
-
-	adis_cleanup_buffer_and_trigger(&st->adis, indio_dev);
-	clk_disable_unprepare(st->ext_clk);
-
-	return 0;
 }
 
 static const struct spi_device_id adis16480_ids[] = {
@@ -1390,10 +1527,10 @@ static struct spi_driver adis16480_driver = {
 	},
 	.id_table = adis16480_ids,
 	.probe = adis16480_probe,
-	.remove = adis16480_remove,
 };
 module_spi_driver(adis16480_driver);
 
 MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
 MODULE_DESCRIPTION("Analog Devices ADIS16480 IMU driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ADISLIB);
diff --git a/drivers/iio/imu/adis_buffer.c b/drivers/iio/imu/adis_buffer.c
index 3f4dd5c00b03..928933027ae3 100644
--- a/drivers/iio/imu/adis_buffer.c
+++ b/drivers/iio/imu/adis_buffer.c
@@ -20,37 +20,44 @@
 #include <linux/iio/imu/adis.h>
 
 static int adis_update_scan_mode_burst(struct iio_dev *indio_dev,
-	const unsigned long *scan_mask)
+				       const unsigned long *scan_mask)
 {
 	struct adis *adis = iio_device_get_drvdata(indio_dev);
-	unsigned int burst_length;
+	unsigned int burst_length, burst_max_length;
 	u8 *tx;
 
-	/* All but the timestamp channel */
-	burst_length = (indio_dev->num_channels - 1) * sizeof(u16);
-	burst_length += adis->burst->extra_len;
+	burst_length = adis->data->burst_len + adis->burst_extra_len;
+
+	if (adis->data->burst_max_len)
+		burst_max_length = adis->data->burst_max_len;
+	else
+		burst_max_length = burst_length;
 
 	adis->xfer = kcalloc(2, sizeof(*adis->xfer), GFP_KERNEL);
 	if (!adis->xfer)
 		return -ENOMEM;
 
-	adis->buffer = kzalloc(burst_length + sizeof(u16), GFP_KERNEL);
+	adis->buffer = kzalloc(burst_max_length + sizeof(u16), GFP_KERNEL);
 	if (!adis->buffer) {
 		kfree(adis->xfer);
 		adis->xfer = NULL;
 		return -ENOMEM;
 	}
 
-	tx = adis->buffer + burst_length;
-	tx[0] = ADIS_READ_REG(adis->burst->reg_cmd);
+	tx = adis->buffer + burst_max_length;
+	tx[0] = ADIS_READ_REG(adis->data->burst_reg_cmd);
 	tx[1] = 0;
 
 	adis->xfer[0].tx_buf = tx;
 	adis->xfer[0].bits_per_word = 8;
 	adis->xfer[0].len = 2;
+	if (adis->data->burst_max_speed_hz)
+		adis->xfer[0].speed_hz = adis->data->burst_max_speed_hz;
 	adis->xfer[1].rx_buf = adis->buffer;
 	adis->xfer[1].bits_per_word = 8;
 	adis->xfer[1].len = burst_length;
+	if (adis->data->burst_max_speed_hz)
+		adis->xfer[1].speed_hz = adis->data->burst_max_speed_hz;
 
 	spi_message_init(&adis->msg);
 	spi_message_add_tail(&adis->xfer[0], &adis->msg);
@@ -60,7 +67,7 @@ static int adis_update_scan_mode_burst(struct iio_dev *indio_dev,
 }
 
 int adis_update_scan_mode(struct iio_dev *indio_dev,
-	const unsigned long *scan_mask)
+			  const unsigned long *scan_mask)
 {
 	struct adis *adis = iio_device_get_drvdata(indio_dev);
 	const struct iio_chan_spec *chan;
@@ -71,7 +78,7 @@ int adis_update_scan_mode(struct iio_dev *indio_dev,
 	kfree(adis->xfer);
 	kfree(adis->buffer);
 
-	if (adis->burst && adis->burst->en)
+	if (adis->data->burst_len)
 		return adis_update_scan_mode_burst(indio_dev, scan_mask);
 
 	scan_count = indio_dev->scan_bytes / 2;
@@ -97,7 +104,8 @@ int adis_update_scan_mode(struct iio_dev *indio_dev,
 		if (j != scan_count)
 			adis->xfer[j].cs_change = 1;
 		adis->xfer[j].len = 2;
-		adis->xfer[j].delay_usecs = adis->data->read_delay;
+		adis->xfer[j].delay.value = adis->data->read_delay;
+		adis->xfer[j].delay.unit = SPI_DELAY_UNIT_USECS;
 		if (j < scan_count)
 			adis->xfer[j].tx_buf = &tx[j];
 		if (j >= 1)
@@ -116,7 +124,7 @@ int adis_update_scan_mode(struct iio_dev *indio_dev,
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(adis_update_scan_mode);
+EXPORT_SYMBOL_NS_GPL(adis_update_scan_mode, IIO_ADISLIB);
 
 static irqreturn_t adis_trigger_handler(int irq, void *p)
 {
@@ -125,40 +133,52 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
 	struct adis *adis = iio_device_get_drvdata(indio_dev);
 	int ret;
 
-	if (!adis->buffer)
-		return -ENOMEM;
-
 	if (adis->data->has_paging) {
 		mutex_lock(&adis->state_lock);
 		if (adis->current_page != 0) {
 			adis->tx[0] = ADIS_WRITE_REG(ADIS_REG_PAGE_ID);
 			adis->tx[1] = 0;
-			spi_write(adis->spi, adis->tx, 2);
+			ret = spi_write(adis->spi, adis->tx, 2);
+			if (ret) {
+				dev_err(&adis->spi->dev, "Failed to change device page: %d\n", ret);
+				mutex_unlock(&adis->state_lock);
+				goto irq_done;
+			}
+
+			adis->current_page = 0;
 		}
 	}
 
 	ret = spi_sync(adis->spi, &adis->msg);
-	if (ret)
-		dev_err(&adis->spi->dev, "Failed to read data: %d", ret);
-
-
-	if (adis->data->has_paging) {
-		adis->current_page = 0;
+	if (adis->data->has_paging)
 		mutex_unlock(&adis->state_lock);
+	if (ret) {
+		dev_err(&adis->spi->dev, "Failed to read data: %d", ret);
+		goto irq_done;
 	}
 
 	iio_push_to_buffers_with_timestamp(indio_dev, adis->buffer,
-		pf->timestamp);
+					   pf->timestamp);
 
+irq_done:
 	iio_trigger_notify_done(indio_dev->trig);
 
 	return IRQ_HANDLED;
 }
 
+static void adis_buffer_cleanup(void *arg)
+{
+	struct adis *adis = arg;
+
+	kfree(adis->buffer);
+	kfree(adis->xfer);
+}
+
 /**
- * adis_setup_buffer_and_trigger() - Sets up buffer and trigger for the adis device
- * @adis: The adis device.
- * @indio_dev: The IIO device.
+ * devm_adis_setup_buffer_and_trigger() - Sets up buffer and trigger for
+ *					  the managed adis device
+ * @adis: The adis device
+ * @indio_dev: The IIO device
  * @trigger_handler: Optional trigger handler, may be NULL.
  *
  * Returns 0 on success, a negative error code otherwise.
@@ -167,50 +187,30 @@ static irqreturn_t adis_trigger_handler(int irq, void *p)
  * 'trigger_handler' is NULL the default trigger handler will be used. The
  * default trigger handler will simply read the registers assigned to the
  * currently active channels.
- *
- * adis_cleanup_buffer_and_trigger() should be called to free the resources
- * allocated by this function.
  */
-int adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
-	irqreturn_t (*trigger_handler)(int, void *))
+int
+devm_adis_setup_buffer_and_trigger(struct adis *adis, struct iio_dev *indio_dev,
+				   irq_handler_t trigger_handler)
 {
 	int ret;
 
 	if (!trigger_handler)
 		trigger_handler = adis_trigger_handler;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		trigger_handler, NULL);
+	ret = devm_iio_triggered_buffer_setup(&adis->spi->dev, indio_dev,
+					      &iio_pollfunc_store_time,
+					      trigger_handler, NULL);
 	if (ret)
 		return ret;
 
 	if (adis->spi->irq) {
-		ret = adis_probe_trigger(adis, indio_dev);
+		ret = devm_adis_probe_trigger(adis, indio_dev);
 		if (ret)
-			goto error_buffer_cleanup;
+			return ret;
 	}
-	return 0;
 
-error_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-	return ret;
+	return devm_add_action_or_reset(&adis->spi->dev, adis_buffer_cleanup,
+					adis);
 }
-EXPORT_SYMBOL_GPL(adis_setup_buffer_and_trigger);
+EXPORT_SYMBOL_NS_GPL(devm_adis_setup_buffer_and_trigger, IIO_ADISLIB);
 
-/**
- * adis_cleanup_buffer_and_trigger() - Free buffer and trigger resources
- * @adis: The adis device.
- * @indio_dev: The IIO device.
- *
- * Frees resources allocated by adis_setup_buffer_and_trigger()
- */
-void adis_cleanup_buffer_and_trigger(struct adis *adis,
-	struct iio_dev *indio_dev)
-{
-	if (adis->spi->irq)
-		adis_remove_trigger(adis);
-	kfree(adis->buffer);
-	kfree(adis->xfer);
-	iio_triggered_buffer_cleanup(indio_dev);
-}
-EXPORT_SYMBOL_GPL(adis_cleanup_buffer_and_trigger);
diff --git a/drivers/iio/imu/adis_trigger.c b/drivers/iio/imu/adis_trigger.c
index 8b9cd02c0f9f..f890bf842db8 100644
--- a/drivers/iio/imu/adis_trigger.c
+++ b/drivers/iio/imu/adis_trigger.c
@@ -15,8 +15,7 @@
 #include <linux/iio/trigger.h>
 #include <linux/iio/imu/adis.h>
 
-static int adis_data_rdy_trigger_set_state(struct iio_trigger *trig,
-						bool state)
+static int adis_data_rdy_trigger_set_state(struct iio_trigger *trig, bool state)
 {
 	struct adis *adis = iio_trigger_get_drvdata(trig);
 
@@ -27,62 +26,66 @@ static const struct iio_trigger_ops adis_trigger_ops = {
 	.set_trigger_state = &adis_data_rdy_trigger_set_state,
 };
 
+static int adis_validate_irq_flag(struct adis *adis)
+{
+	unsigned long direction = adis->irq_flag & IRQF_TRIGGER_MASK;
+
+	/* We cannot mask the interrupt so ensure it's not enabled at request */
+	if (adis->data->unmasked_drdy)
+		adis->irq_flag |= IRQF_NO_AUTOEN;
+	/*
+	 * Typically this devices have data ready either on the rising edge or
+	 * on the falling edge of the data ready pin. This checks enforces that
+	 * one of those is set in the drivers... It defaults to
+	 * IRQF_TRIGGER_RISING for backward compatibility with devices that
+	 * don't support changing the pin polarity.
+	 */
+	if (direction == IRQF_TRIGGER_NONE) {
+		adis->irq_flag |= IRQF_TRIGGER_RISING;
+		return 0;
+	} else if (direction != IRQF_TRIGGER_RISING &&
+		   direction != IRQF_TRIGGER_FALLING) {
+		dev_err(&adis->spi->dev, "Invalid IRQ mask: %08lx\n",
+			adis->irq_flag);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
 /**
- * adis_probe_trigger() - Sets up trigger for a adis device
+ * devm_adis_probe_trigger() - Sets up trigger for a managed adis device
  * @adis: The adis device
  * @indio_dev: The IIO device
  *
  * Returns 0 on success or a negative error code
- *
- * adis_remove_trigger() should be used to free the trigger.
  */
-int adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
+int devm_adis_probe_trigger(struct adis *adis, struct iio_dev *indio_dev)
 {
 	int ret;
 
-	adis->trig = iio_trigger_alloc("%s-dev%d", indio_dev->name,
-					indio_dev->id);
-	if (adis->trig == NULL)
+	adis->trig = devm_iio_trigger_alloc(&adis->spi->dev, "%s-dev%d",
+					    indio_dev->name,
+					    iio_device_id(indio_dev));
+	if (!adis->trig)
 		return -ENOMEM;
 
-	adis->trig->dev.parent = &adis->spi->dev;
 	adis->trig->ops = &adis_trigger_ops;
 	iio_trigger_set_drvdata(adis->trig, adis);
 
-	ret = request_irq(adis->spi->irq,
-			  &iio_trigger_generic_data_rdy_poll,
-			  IRQF_TRIGGER_RISING,
-			  indio_dev->name,
-			  adis->trig);
+	ret = adis_validate_irq_flag(adis);
 	if (ret)
-		goto error_free_trig;
-
-	ret = iio_trigger_register(adis->trig);
+		return ret;
 
-	indio_dev->trig = iio_trigger_get(adis->trig);
+	ret = devm_request_irq(&adis->spi->dev, adis->spi->irq,
+			       &iio_trigger_generic_data_rdy_poll,
+			       adis->irq_flag,
+			       indio_dev->name,
+			       adis->trig);
 	if (ret)
-		goto error_free_irq;
+		return ret;
 
-	return 0;
-
-error_free_irq:
-	free_irq(adis->spi->irq, adis->trig);
-error_free_trig:
-	iio_trigger_free(adis->trig);
-	return ret;
+	return devm_iio_trigger_register(&adis->spi->dev, adis->trig);
 }
-EXPORT_SYMBOL_GPL(adis_probe_trigger);
+EXPORT_SYMBOL_NS_GPL(devm_adis_probe_trigger, IIO_ADISLIB);
 
-/**
- * adis_remove_trigger() - Remove trigger for a adis devices
- * @adis: The adis device
- *
- * Removes the trigger previously registered with adis_probe_trigger().
- */
-void adis_remove_trigger(struct adis *adis)
-{
-	iio_trigger_unregister(adis->trig);
-	free_irq(adis->spi->irq, adis->trig);
-	iio_trigger_free(adis->trig);
-}
-EXPORT_SYMBOL_GPL(adis_remove_trigger);
diff --git a/drivers/iio/imu/bmi160/bmi160.h b/drivers/iio/imu/bmi160/bmi160.h
index 621f5309d735..32c2ea2d7112 100644
--- a/drivers/iio/imu/bmi160/bmi160.h
+++ b/drivers/iio/imu/bmi160/bmi160.h
@@ -3,10 +3,20 @@
 #define BMI160_H_
 
 #include <linux/iio/iio.h>
+#include <linux/regulator/consumer.h>
 
 struct bmi160_data {
 	struct regmap *regmap;
 	struct iio_trigger *trig;
+	struct regulator_bulk_data supplies[2];
+	struct iio_mount_matrix orientation;
+	/*
+	 * Ensure natural alignment for timestamp if present.
+	 * Max length needed: 2 * 3 channels + 4 bytes padding + 8 byte ts.
+	 * If fewer channels are enabled, less space may be needed, as
+	 * long as the timestamp is still aligned to 8 bytes.
+	 */
+	__le16 buf[12] __aligned(8);
 };
 
 extern const struct regmap_config bmi160_regmap_config;
diff --git a/drivers/iio/imu/bmi160/bmi160_core.c b/drivers/iio/imu/bmi160/bmi160_core.c
index 6af65d6f1d28..a77f1a8348ff 100644
--- a/drivers/iio/imu/bmi160/bmi160_core.c
+++ b/drivers/iio/imu/bmi160/bmi160_core.c
@@ -11,10 +11,10 @@
  */
 #include <linux/module.h>
 #include <linux/regmap.h>
-#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/irq.h>
-#include <linux/of_irq.h>
+#include <linux/property.h>
+#include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/triggered_buffer.h>
@@ -109,6 +109,7 @@
 		.storagebits = 16,				\
 		.endianness = IIO_LE,				\
 	},							\
+	.ext_info = bmi160_ext_info,				\
 }
 
 /* scan indexes follow DATA register order */
@@ -142,7 +143,7 @@ const struct regmap_config bmi160_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
 };
-EXPORT_SYMBOL(bmi160_regmap_config);
+EXPORT_SYMBOL_NS(bmi160_regmap_config, IIO_BMI160);
 
 struct bmi160_regs {
 	u8 data; /* LSB byte register for X-axis */
@@ -264,6 +265,20 @@ static const struct  bmi160_odr_item bmi160_odr_table[] = {
 	},
 };
 
+static const struct iio_mount_matrix *
+bmi160_get_mount_matrix(const struct iio_dev *indio_dev,
+			const struct iio_chan_spec *chan)
+{
+	struct bmi160_data *data = iio_priv(indio_dev);
+
+	return &data->orientation;
+}
+
+static const struct iio_chan_spec_ext_info bmi160_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, bmi160_get_mount_matrix),
+	{ }
+};
+
 static const struct iio_chan_spec bmi160_channels[] = {
 	BMI160_CHANNEL(IIO_ACCEL, X, BMI160_SCAN_ACCEL_X),
 	BMI160_CHANNEL(IIO_ACCEL, Y, BMI160_SCAN_ACCEL_Y),
@@ -411,8 +426,6 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct bmi160_data *data = iio_priv(indio_dev);
-	__le16 buf[16];
-	/* 3 sens x 3 axis x __le16 + 3 x __le16 pad + 4 x __le16 tstamp */
 	int i, ret, j = 0, base = BMI160_REG_DATA_MAGN_XOUT_L;
 	__le16 sample;
 
@@ -422,10 +435,10 @@ static irqreturn_t bmi160_trigger_handler(int irq, void *p)
 				       &sample, sizeof(sample));
 		if (ret)
 			goto done;
-		buf[j++] = sample;
+		data->buf[j++] = sample;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, data->buf, pf->timestamp);
 done:
 	iio_trigger_notify_done(indio_dev->trig);
 	return IRQ_HANDLED;
@@ -470,7 +483,6 @@ static int bmi160_write_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_SCALE:
 		return bmi160_set_scale(data,
 					bmi160_to_sensor(chan->type), val2);
-		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		return bmi160_set_odr(data, bmi160_to_sensor(chan->type),
 				      val, val2);
@@ -512,17 +524,6 @@ static const struct iio_info bmi160_info = {
 	.attrs = &bmi160_attrs_group,
 };
 
-static const char *bmi160_match_acpi_device(struct device *dev)
-{
-	const struct acpi_device_id *id;
-
-	id = acpi_match_device(dev->driver->acpi_match_table, dev);
-	if (!id)
-		return NULL;
-
-	return dev_name(dev);
-}
-
 static int bmi160_write_conf_reg(struct regmap *regmap, unsigned int reg,
 				 unsigned int mask, unsigned int bits,
 				 unsigned int write_usleep)
@@ -632,20 +633,20 @@ int bmi160_enable_irq(struct regmap *regmap, bool enable)
 				     BMI160_DRDY_INT_EN, enable_bit,
 				     BMI160_NORMAL_WRITE_USLEEP);
 }
-EXPORT_SYMBOL(bmi160_enable_irq);
+EXPORT_SYMBOL_NS(bmi160_enable_irq, IIO_BMI160);
 
-static int bmi160_get_irq(struct device_node *of_node, enum bmi160_int_pin *pin)
+static int bmi160_get_irq(struct fwnode_handle *fwnode, enum bmi160_int_pin *pin)
 {
 	int irq;
 
 	/* Use INT1 if possible, otherwise fall back to INT2. */
-	irq = of_irq_get_byname(of_node, "INT1");
+	irq = fwnode_irq_get_byname(fwnode, "INT1");
 	if (irq > 0) {
 		*pin = BMI160_PIN_INT1;
 		return irq;
 	}
 
-	irq = of_irq_get_byname(of_node, "INT2");
+	irq = fwnode_irq_get_byname(fwnode, "INT2");
 	if (irq > 0)
 		*pin = BMI160_PIN_INT2;
 
@@ -675,7 +676,7 @@ static int bmi160_config_device_irq(struct iio_dev *indio_dev, int irq_type,
 		return -EINVAL;
 	}
 
-	open_drain = of_property_read_bool(dev->of_node, "drive-open-drain");
+	open_drain = device_property_read_bool(dev, "drive-open-drain");
 
 	return bmi160_config_pin(data->regmap, pin, open_drain, irq_mask,
 				 BMI160_NORMAL_WRITE_USLEEP);
@@ -709,9 +710,15 @@ static int bmi160_chip_init(struct bmi160_data *data, bool use_spi)
 	unsigned int val;
 	struct device *dev = regmap_get_device(data->regmap);
 
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->supplies), data->supplies);
+	if (ret) {
+		dev_err(dev, "Failed to enable regulators: %d\n", ret);
+		return ret;
+	}
+
 	ret = regmap_write(data->regmap, BMI160_REG_CMD, BMI160_CMD_SOFTRESET);
 	if (ret)
-		return ret;
+		goto disable_regulator;
 
 	usleep_range(BMI160_SOFTRESET_USLEEP, BMI160_SOFTRESET_USLEEP + 1);
 
@@ -722,29 +729,37 @@ static int bmi160_chip_init(struct bmi160_data *data, bool use_spi)
 	if (use_spi) {
 		ret = regmap_read(data->regmap, BMI160_REG_DUMMY, &val);
 		if (ret)
-			return ret;
+			goto disable_regulator;
 	}
 
 	ret = regmap_read(data->regmap, BMI160_REG_CHIP_ID, &val);
 	if (ret) {
 		dev_err(dev, "Error reading chip id\n");
-		return ret;
+		goto disable_regulator;
 	}
 	if (val != BMI160_CHIP_ID_VAL) {
 		dev_err(dev, "Wrong chip id, got %x expected %x\n",
 			val, BMI160_CHIP_ID_VAL);
-		return -ENODEV;
+		ret = -ENODEV;
+		goto disable_regulator;
 	}
 
 	ret = bmi160_set_mode(data, BMI160_ACCEL, true);
 	if (ret)
-		return ret;
+		goto disable_regulator;
 
 	ret = bmi160_set_mode(data, BMI160_GYRO, true);
 	if (ret)
-		return ret;
+		goto disable_accel;
 
 	return 0;
+
+disable_accel:
+	bmi160_set_mode(data, BMI160_ACCEL, false);
+
+disable_regulator:
+	regulator_bulk_disable(ARRAY_SIZE(data->supplies), data->supplies);
+	return ret;
 }
 
 static int bmi160_data_rdy_trigger_set_state(struct iio_trigger *trig,
@@ -766,7 +781,8 @@ int bmi160_probe_trigger(struct iio_dev *indio_dev, int irq, u32 irq_type)
 	int ret;
 
 	data->trig = devm_iio_trigger_alloc(&indio_dev->dev, "%s-dev%d",
-					    indio_dev->name, indio_dev->id);
+					    indio_dev->name,
+					    iio_device_id(indio_dev));
 
 	if (data->trig == NULL)
 		return -ENOMEM;
@@ -793,9 +809,16 @@ int bmi160_probe_trigger(struct iio_dev *indio_dev, int irq, u32 irq_type)
 static void bmi160_chip_uninit(void *data)
 {
 	struct bmi160_data *bmi_data = data;
+	struct device *dev = regmap_get_device(bmi_data->regmap);
+	int ret;
 
 	bmi160_set_mode(bmi_data, BMI160_GYRO, false);
 	bmi160_set_mode(bmi_data, BMI160_ACCEL, false);
+
+	ret = regulator_bulk_disable(ARRAY_SIZE(bmi_data->supplies),
+				     bmi_data->supplies);
+	if (ret)
+		dev_err(dev, "Failed to disable regulators: %d\n", ret);
 }
 
 int bmi160_core_probe(struct device *dev, struct regmap *regmap,
@@ -815,6 +838,20 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap,
 	dev_set_drvdata(dev, indio_dev);
 	data->regmap = regmap;
 
+	data->supplies[0].supply = "vdd";
+	data->supplies[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(dev,
+				      ARRAY_SIZE(data->supplies),
+				      data->supplies);
+	if (ret) {
+		dev_err(dev, "Failed to get regulators: %d\n", ret);
+		return ret;
+	}
+
+	ret = iio_read_mount_matrix(dev, &data->orientation);
+	if (ret)
+		return ret;
+
 	ret = bmi160_chip_init(data, use_spi);
 	if (ret)
 		return ret;
@@ -823,10 +860,6 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap,
 	if (ret)
 		return ret;
 
-	if (!name && ACPI_HANDLE(dev))
-		name = bmi160_match_acpi_device(dev);
-
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = bmi160_channels;
 	indio_dev->num_channels = ARRAY_SIZE(bmi160_channels);
 	indio_dev->name = name;
@@ -839,7 +872,7 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap,
 	if (ret)
 		return ret;
 
-	irq = bmi160_get_irq(dev->of_node, &int_pin);
+	irq = bmi160_get_irq(dev_fwnode(dev), &int_pin);
 	if (irq > 0) {
 		ret = bmi160_setup_irq(indio_dev, irq, int_pin);
 		if (ret)
@@ -851,8 +884,8 @@ int bmi160_core_probe(struct device *dev, struct regmap *regmap,
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(bmi160_core_probe);
+EXPORT_SYMBOL_NS_GPL(bmi160_core_probe, IIO_BMI160);
 
-MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com");
+MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
 MODULE_DESCRIPTION("Bosch BMI160 driver");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/imu/bmi160/bmi160_i2c.c b/drivers/iio/imu/bmi160/bmi160_i2c.c
index e36f5e82d400..d93f4fa2ad55 100644
--- a/drivers/iio/imu/bmi160/bmi160_i2c.c
+++ b/drivers/iio/imu/bmi160/bmi160_i2c.c
@@ -8,10 +8,9 @@
  *      - 0x68 if SDO is pulled to GND
  *      - 0x69 if SDO is pulled to VDDIO
  */
-#include <linux/acpi.h>
 #include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 
 #include "bmi160.h"
@@ -20,17 +19,19 @@ static int bmi160_i2c_probe(struct i2c_client *client,
 			    const struct i2c_device_id *id)
 {
 	struct regmap *regmap;
-	const char *name = NULL;
+	const char *name;
 
 	regmap = devm_regmap_init_i2c(client, &bmi160_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
 	if (id)
 		name = id->name;
+	else
+		name = dev_name(&client->dev);
 
 	return bmi160_core_probe(&client->dev, regmap, name, false);
 }
@@ -47,19 +48,17 @@ static const struct acpi_device_id bmi160_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
 
-#ifdef CONFIG_OF
 static const struct of_device_id bmi160_of_match[] = {
 	{ .compatible = "bosch,bmi160" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmi160_of_match);
-#endif
 
 static struct i2c_driver bmi160_i2c_driver = {
 	.driver = {
 		.name			= "bmi160_i2c",
-		.acpi_match_table	= ACPI_PTR(bmi160_acpi_match),
-		.of_match_table		= of_match_ptr(bmi160_of_match),
+		.acpi_match_table	= bmi160_acpi_match,
+		.of_match_table		= bmi160_of_match,
 	},
 	.probe		= bmi160_i2c_probe,
 	.id_table	= bmi160_i2c_id,
@@ -69,3 +68,4 @@ module_i2c_driver(bmi160_i2c_driver);
 MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
 MODULE_DESCRIPTION("BMI160 I2C driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_BMI160);
diff --git a/drivers/iio/imu/bmi160/bmi160_spi.c b/drivers/iio/imu/bmi160/bmi160_spi.c
index c19e3df35559..8b573ea99af2 100644
--- a/drivers/iio/imu/bmi160/bmi160_spi.c
+++ b/drivers/iio/imu/bmi160/bmi160_spi.c
@@ -5,9 +5,8 @@
  * Copyright (c) 2016, Intel Corporation.
  *
  */
-#include <linux/acpi.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
 
@@ -17,14 +16,21 @@ static int bmi160_spi_probe(struct spi_device *spi)
 {
 	struct regmap *regmap;
 	const struct spi_device_id *id = spi_get_device_id(spi);
+	const char *name;
 
 	regmap = devm_regmap_init_spi(spi, &bmi160_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
-	return bmi160_core_probe(&spi->dev, regmap, id->name, true);
+
+	if (id)
+		name = id->name;
+	else
+		name = dev_name(&spi->dev);
+
+	return bmi160_core_probe(&spi->dev, regmap, name, true);
 }
 
 static const struct spi_device_id bmi160_spi_id[] = {
@@ -39,20 +45,18 @@ static const struct acpi_device_id bmi160_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, bmi160_acpi_match);
 
-#ifdef CONFIG_OF
 static const struct of_device_id bmi160_of_match[] = {
 	{ .compatible = "bosch,bmi160" },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmi160_of_match);
-#endif
 
 static struct spi_driver bmi160_spi_driver = {
 	.probe		= bmi160_spi_probe,
 	.id_table	= bmi160_spi_id,
 	.driver = {
-		.acpi_match_table	= ACPI_PTR(bmi160_acpi_match),
-		.of_match_table		= of_match_ptr(bmi160_of_match),
+		.acpi_match_table	= bmi160_acpi_match,
+		.of_match_table		= bmi160_of_match,
 		.name			= "bmi160_spi",
 	},
 };
@@ -61,3 +65,4 @@ module_spi_driver(bmi160_spi_driver);
 MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com");
 MODULE_DESCRIPTION("Bosch BMI160 SPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_BMI160);
diff --git a/drivers/iio/imu/bno055/Kconfig b/drivers/iio/imu/bno055/Kconfig
new file mode 100644
index 000000000000..fa79b1ac4f85
--- /dev/null
+++ b/drivers/iio/imu/bno055/Kconfig
@@ -0,0 +1,25 @@
+# SPDX-License-Identifier: GPL-2.0
+
+config BOSCH_BNO055
+	tristate
+
+config BOSCH_BNO055_SERIAL
+	tristate "Bosch BNO055 attached via UART"
+	depends on SERIAL_DEV_BUS
+	select BOSCH_BNO055
+	help
+	  Enable this to support Bosch BNO055 IMUs attached via UART.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called bno055_sl.
+
+config BOSCH_BNO055_I2C
+	tristate "Bosch BNO055 attached via I2C bus"
+	depends on I2C
+	select REGMAP_I2C
+	select BOSCH_BNO055
+	help
+	  Enable this to support Bosch BNO055 IMUs attached via I2C bus.
+
+	  This driver can also be built as a module. If so, the module will be
+	  called bno055_i2c.
diff --git a/drivers/iio/imu/bno055/Makefile b/drivers/iio/imu/bno055/Makefile
new file mode 100644
index 000000000000..98c624730dae
--- /dev/null
+++ b/drivers/iio/imu/bno055/Makefile
@@ -0,0 +1,10 @@
+# SPDX-License-Identifier: GPL-2.0
+
+obj-$(CONFIG_BOSCH_BNO055) += bno055.o
+obj-$(CONFIG_BOSCH_BNO055_SERIAL) += bno055_ser.o
+bno055_ser-y := bno055_ser_core.o
+# define_trace.h needs to know how to find our header
+CFLAGS_bno055_ser_trace.o := -I$(src)
+bno055_ser-$(CONFIG_TRACING) += bno055_ser_trace.o
+
+obj-$(CONFIG_BOSCH_BNO055_I2C) += bno055_i2c.o
diff --git a/drivers/iio/imu/bno055/bno055.c b/drivers/iio/imu/bno055/bno055.c
new file mode 100644
index 000000000000..307557a609e3
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055.c
@@ -0,0 +1,1685 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * IIO driver for Bosch BNO055 IMU
+ *
+ * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia
+ * Electronic Design Laboratory
+ * Written by Andrea Merello <andrea.merello@iit.it>
+ *
+ * Portions of this driver are taken from the BNO055 driver patch
+ * from Vlad Dogaru which is Copyright (c) 2016, Intel Corporation.
+ *
+ * This driver is also based on BMI160 driver, which is:
+ *	Copyright (c) 2016, Intel Corporation.
+ *	Copyright (c) 2019, Martin Kelly.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bitmap.h>
+#include <linux/clk.h>
+#include <linux/debugfs.h>
+#include <linux/device.h>
+#include <linux/firmware.h>
+#include <linux/gpio/consumer.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/util_macros.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include "bno055.h"
+
+#define BNO055_FW_UID_FMT "bno055-caldata-%*phN.dat"
+#define BNO055_FW_GENERIC_NAME "bno055-caldata.dat"
+
+/* common registers */
+#define BNO055_PAGESEL_REG		0x7
+
+/* page 0 registers */
+#define BNO055_CHIP_ID_REG		0x0
+#define BNO055_CHIP_ID_MAGIC 0xA0
+#define BNO055_SW_REV_LSB_REG		0x4
+#define BNO055_SW_REV_MSB_REG		0x5
+#define BNO055_ACC_DATA_X_LSB_REG	0x8
+#define BNO055_ACC_DATA_Y_LSB_REG	0xA
+#define BNO055_ACC_DATA_Z_LSB_REG	0xC
+#define BNO055_MAG_DATA_X_LSB_REG	0xE
+#define BNO055_MAG_DATA_Y_LSB_REG	0x10
+#define BNO055_MAG_DATA_Z_LSB_REG	0x12
+#define BNO055_GYR_DATA_X_LSB_REG	0x14
+#define BNO055_GYR_DATA_Y_LSB_REG	0x16
+#define BNO055_GYR_DATA_Z_LSB_REG	0x18
+#define BNO055_EUL_DATA_X_LSB_REG	0x1A
+#define BNO055_EUL_DATA_Y_LSB_REG	0x1C
+#define BNO055_EUL_DATA_Z_LSB_REG	0x1E
+#define BNO055_QUAT_DATA_W_LSB_REG	0x20
+#define BNO055_LIA_DATA_X_LSB_REG	0x28
+#define BNO055_LIA_DATA_Y_LSB_REG	0x2A
+#define BNO055_LIA_DATA_Z_LSB_REG	0x2C
+#define BNO055_GRAVITY_DATA_X_LSB_REG	0x2E
+#define BNO055_GRAVITY_DATA_Y_LSB_REG	0x30
+#define BNO055_GRAVITY_DATA_Z_LSB_REG	0x32
+#define BNO055_SCAN_CH_COUNT ((BNO055_GRAVITY_DATA_Z_LSB_REG - BNO055_ACC_DATA_X_LSB_REG) / 2)
+#define BNO055_TEMP_REG			0x34
+#define BNO055_CALIB_STAT_REG		0x35
+#define BNO055_CALIB_STAT_MAGN_SHIFT 0
+#define BNO055_CALIB_STAT_ACCEL_SHIFT 2
+#define BNO055_CALIB_STAT_GYRO_SHIFT 4
+#define BNO055_CALIB_STAT_SYS_SHIFT 6
+#define BNO055_SYS_ERR_REG		0x3A
+#define BNO055_POWER_MODE_REG		0x3E
+#define BNO055_POWER_MODE_NORMAL 0
+#define BNO055_SYS_TRIGGER_REG		0x3F
+#define BNO055_SYS_TRIGGER_RST_SYS BIT(5)
+#define BNO055_SYS_TRIGGER_CLK_SEL BIT(7)
+#define BNO055_OPR_MODE_REG		0x3D
+#define BNO055_OPR_MODE_CONFIG 0x0
+#define BNO055_OPR_MODE_AMG 0x7
+#define BNO055_OPR_MODE_FUSION_FMC_OFF 0xB
+#define BNO055_OPR_MODE_FUSION 0xC
+#define BNO055_UNIT_SEL_REG		0x3B
+/* Android orientation mode means: pitch value decreases turning clockwise */
+#define BNO055_UNIT_SEL_ANDROID BIT(7)
+#define BNO055_UNIT_SEL_GYR_RPS BIT(1)
+#define BNO055_CALDATA_START		0x55
+#define BNO055_CALDATA_END		0x6A
+#define BNO055_CALDATA_LEN 22
+
+/*
+ * The difference in address between the register that contains the
+ * value and the register that contains the offset.  This applies for
+ * accel, gyro and magn channels.
+ */
+#define BNO055_REG_OFFSET_ADDR		0x4D
+
+/* page 1 registers */
+#define BNO055_PG1(x) ((x) | 0x80)
+#define BNO055_ACC_CONFIG_REG		BNO055_PG1(0x8)
+#define BNO055_ACC_CONFIG_LPF_MASK GENMASK(4, 2)
+#define BNO055_ACC_CONFIG_RANGE_MASK GENMASK(1, 0)
+#define BNO055_MAG_CONFIG_REG		BNO055_PG1(0x9)
+#define BNO055_MAG_CONFIG_HIGHACCURACY 0x18
+#define BNO055_MAG_CONFIG_ODR_MASK GENMASK(2, 0)
+#define BNO055_GYR_CONFIG_REG		BNO055_PG1(0xA)
+#define BNO055_GYR_CONFIG_RANGE_MASK GENMASK(2, 0)
+#define BNO055_GYR_CONFIG_LPF_MASK GENMASK(5, 3)
+#define BNO055_GYR_AM_SET_REG		BNO055_PG1(0x1F)
+#define BNO055_UID_LOWER_REG		BNO055_PG1(0x50)
+#define BNO055_UID_HIGHER_REG		BNO055_PG1(0x5F)
+#define BNO055_UID_LEN 16
+
+struct bno055_sysfs_attr {
+	int *vals;
+	int len;
+	int *fusion_vals;
+	int *hw_xlate;
+	int type;
+};
+
+static int bno055_acc_lpf_vals[] = {
+	7, 810000, 15, 630000, 31, 250000, 62, 500000,
+	125, 0, 250, 0, 500, 0, 1000, 0,
+};
+
+static struct bno055_sysfs_attr bno055_acc_lpf = {
+	.vals = bno055_acc_lpf_vals,
+	.len = ARRAY_SIZE(bno055_acc_lpf_vals),
+	.fusion_vals = (int[]){62, 500000},
+	.type = IIO_VAL_INT_PLUS_MICRO,
+};
+
+static int bno055_acc_range_vals[] = {
+  /* G:    2,    4,    8,    16 */
+	1962, 3924, 7848, 15696
+};
+
+static struct bno055_sysfs_attr bno055_acc_range = {
+	.vals = bno055_acc_range_vals,
+	.len = ARRAY_SIZE(bno055_acc_range_vals),
+	.fusion_vals = (int[]){3924}, /* 4G */
+	.type = IIO_VAL_INT,
+};
+
+/*
+ * Theoretically the IMU should return data in a given (i.e. fixed) unit
+ * regardless of the range setting. This happens for the accelerometer, but not
+ * for the gyroscope; the gyroscope range setting affects the scale.
+ * This is probably due to this[0] bug.
+ * For this reason we map the internal range setting onto the standard IIO scale
+ * attribute for gyro.
+ * Since the bug[0] may be fixed in future, we check for the IMU FW version and
+ * eventually warn the user.
+ * Currently we just don't care about "range" attributes for gyro.
+ *
+ * [0]  https://community.bosch-sensortec.com/t5/MEMS-sensors-forum/BNO055-Wrong-sensitivity-resolution-in-datasheet/td-p/10266
+ */
+
+/*
+ * dps = hwval * (dps_range/2^15)
+ * rps = hwval * (rps_range/2^15)
+ *     = hwval * (dps_range/(2^15 * k))
+ * where k is rad-to-deg factor
+ */
+static int bno055_gyr_scale_vals[] = {
+	125, 1877467, 250, 1877467, 500, 1877467,
+	1000, 1877467, 2000, 1877467,
+};
+
+static struct bno055_sysfs_attr bno055_gyr_scale = {
+	.vals = bno055_gyr_scale_vals,
+	.len = ARRAY_SIZE(bno055_gyr_scale_vals),
+	.fusion_vals = (int[]){1, 900},
+	.hw_xlate = (int[]){4, 3, 2, 1, 0},
+	.type = IIO_VAL_FRACTIONAL,
+};
+
+static int bno055_gyr_lpf_vals[] = {12, 23, 32, 47, 64, 116, 230, 523};
+static struct bno055_sysfs_attr bno055_gyr_lpf = {
+	.vals = bno055_gyr_lpf_vals,
+	.len = ARRAY_SIZE(bno055_gyr_lpf_vals),
+	.fusion_vals = (int[]){32},
+	.hw_xlate = (int[]){5, 4, 7, 3, 6, 2, 1, 0},
+	.type = IIO_VAL_INT,
+};
+
+static int bno055_mag_odr_vals[] = {2, 6, 8, 10, 15, 20, 25, 30};
+static struct bno055_sysfs_attr bno055_mag_odr = {
+	.vals = bno055_mag_odr_vals,
+	.len =  ARRAY_SIZE(bno055_mag_odr_vals),
+	.fusion_vals = (int[]){20},
+	.type = IIO_VAL_INT,
+};
+
+struct bno055_priv {
+	struct regmap *regmap;
+	struct device *dev;
+	struct clk *clk;
+	int operation_mode;
+	int xfer_burst_break_thr;
+	struct mutex lock;
+	u8 uid[BNO055_UID_LEN];
+	struct gpio_desc *reset_gpio;
+	bool sw_reset;
+	struct {
+		__le16 chans[BNO055_SCAN_CH_COUNT];
+		s64 timestamp __aligned(8);
+	} buf;
+	struct dentry *debugfs;
+};
+
+static bool bno055_regmap_volatile(struct device *dev, unsigned int reg)
+{
+	/* data and status registers */
+	if (reg >= BNO055_ACC_DATA_X_LSB_REG && reg <= BNO055_SYS_ERR_REG)
+		return true;
+
+	/* when in fusion mode, config is updated by chip */
+	if (reg == BNO055_MAG_CONFIG_REG ||
+	    reg == BNO055_ACC_CONFIG_REG ||
+	    reg == BNO055_GYR_CONFIG_REG)
+		return true;
+
+	/* calibration data may be updated by the IMU */
+	if (reg >= BNO055_CALDATA_START && reg <= BNO055_CALDATA_END)
+		return true;
+
+	return false;
+}
+
+static bool bno055_regmap_readable(struct device *dev, unsigned int reg)
+{
+	/* unnamed PG0 reserved areas */
+	if ((reg < BNO055_PG1(0) && reg > BNO055_CALDATA_END) ||
+	    reg == 0x3C)
+		return false;
+
+	/* unnamed PG1 reserved areas */
+	if (reg > BNO055_PG1(BNO055_UID_HIGHER_REG) ||
+	    (reg < BNO055_PG1(BNO055_UID_LOWER_REG) && reg > BNO055_PG1(BNO055_GYR_AM_SET_REG)) ||
+	    reg == BNO055_PG1(0xE) ||
+	    (reg < BNO055_PG1(BNO055_PAGESEL_REG) && reg >= BNO055_PG1(0x0)))
+		return false;
+	return true;
+}
+
+static bool bno055_regmap_writeable(struct device *dev, unsigned int reg)
+{
+	/*
+	 * Unreadable registers are indeed reserved; there are no WO regs
+	 * (except for a single bit in SYS_TRIGGER register)
+	 */
+	if (!bno055_regmap_readable(dev, reg))
+		return false;
+
+	/* data and status registers */
+	if (reg >= BNO055_ACC_DATA_X_LSB_REG && reg <= BNO055_SYS_ERR_REG)
+		return false;
+
+	/* ID areas */
+	if (reg < BNO055_PAGESEL_REG ||
+	    (reg <= BNO055_UID_HIGHER_REG && reg >= BNO055_UID_LOWER_REG))
+		return false;
+
+	return true;
+}
+
+static const struct regmap_range_cfg bno055_regmap_ranges[] = {
+	{
+		.range_min = 0,
+		.range_max = 0x7f * 2,
+		.selector_reg = BNO055_PAGESEL_REG,
+		.selector_mask = GENMASK(7, 0),
+		.selector_shift = 0,
+		.window_start = 0,
+		.window_len = 0x80,
+	},
+};
+
+const struct regmap_config bno055_regmap_config = {
+	.name = "bno055",
+	.reg_bits = 8,
+	.val_bits = 8,
+	.ranges = bno055_regmap_ranges,
+	.num_ranges = 1,
+	.volatile_reg = bno055_regmap_volatile,
+	.max_register = 0x80 * 2,
+	.writeable_reg = bno055_regmap_writeable,
+	.readable_reg = bno055_regmap_readable,
+	.cache_type = REGCACHE_RBTREE,
+};
+EXPORT_SYMBOL_NS_GPL(bno055_regmap_config, IIO_BNO055);
+
+/* must be called in configuration mode */
+static int bno055_calibration_load(struct bno055_priv *priv, const u8 *data, int len)
+{
+	if (len != BNO055_CALDATA_LEN) {
+		dev_dbg(priv->dev, "Invalid calibration file size %d (expected %d)",
+			len, BNO055_CALDATA_LEN);
+		return -EINVAL;
+	}
+
+	dev_dbg(priv->dev, "loading cal data: %*ph", BNO055_CALDATA_LEN, data);
+	return regmap_bulk_write(priv->regmap, BNO055_CALDATA_START,
+				 data, BNO055_CALDATA_LEN);
+}
+
+static int bno055_operation_mode_do_set(struct bno055_priv *priv,
+					int operation_mode)
+{
+	int ret;
+
+	ret = regmap_write(priv->regmap, BNO055_OPR_MODE_REG,
+			   operation_mode);
+	if (ret)
+		return ret;
+
+	/* Following datasheet specifications: sensor takes 7mS up to 19 mS to switch mode */
+	msleep(20);
+
+	return 0;
+}
+
+static int bno055_system_reset(struct bno055_priv *priv)
+{
+	int ret;
+
+	if (priv->reset_gpio) {
+		gpiod_set_value_cansleep(priv->reset_gpio, 0);
+		usleep_range(5000, 10000);
+		gpiod_set_value_cansleep(priv->reset_gpio, 1);
+	} else if (priv->sw_reset) {
+		ret = regmap_write(priv->regmap, BNO055_SYS_TRIGGER_REG,
+				   BNO055_SYS_TRIGGER_RST_SYS);
+		if (ret)
+			return ret;
+	} else {
+		return 0;
+	}
+
+	regcache_drop_region(priv->regmap, 0x0, 0xff);
+	usleep_range(650000, 700000);
+
+	return 0;
+}
+
+static int bno055_init(struct bno055_priv *priv, const u8 *caldata, int len)
+{
+	int ret;
+
+	ret = bno055_operation_mode_do_set(priv, BNO055_OPR_MODE_CONFIG);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(priv->regmap, BNO055_POWER_MODE_REG,
+			   BNO055_POWER_MODE_NORMAL);
+	if (ret)
+		return ret;
+
+	ret = regmap_write(priv->regmap, BNO055_SYS_TRIGGER_REG,
+			   priv->clk ? BNO055_SYS_TRIGGER_CLK_SEL : 0);
+	if (ret)
+		return ret;
+
+	/* use standard SI units */
+	ret = regmap_write(priv->regmap, BNO055_UNIT_SEL_REG,
+			   BNO055_UNIT_SEL_ANDROID | BNO055_UNIT_SEL_GYR_RPS);
+	if (ret)
+		return ret;
+
+	if (caldata) {
+		ret = bno055_calibration_load(priv, caldata, len);
+		if (ret)
+			dev_warn(priv->dev, "failed to load calibration data with error %d\n",
+				 ret);
+	}
+
+	return 0;
+}
+
+static ssize_t bno055_operation_mode_set(struct bno055_priv *priv,
+					 int operation_mode)
+{
+	u8 caldata[BNO055_CALDATA_LEN];
+	int ret;
+
+	mutex_lock(&priv->lock);
+
+	ret = bno055_operation_mode_do_set(priv, BNO055_OPR_MODE_CONFIG);
+	if (ret)
+		goto exit_unlock;
+
+	if (operation_mode == BNO055_OPR_MODE_FUSION ||
+	    operation_mode == BNO055_OPR_MODE_FUSION_FMC_OFF) {
+		/* for entering fusion mode, reset the chip to clear the algo state */
+		ret = regmap_bulk_read(priv->regmap, BNO055_CALDATA_START, caldata,
+				       BNO055_CALDATA_LEN);
+		if (ret)
+			goto exit_unlock;
+
+		ret = bno055_system_reset(priv);
+		if (ret)
+			goto exit_unlock;
+
+		ret = bno055_init(priv, caldata, BNO055_CALDATA_LEN);
+		if (ret)
+			goto exit_unlock;
+	}
+
+	ret = bno055_operation_mode_do_set(priv, operation_mode);
+	if (ret)
+		goto exit_unlock;
+
+	priv->operation_mode = operation_mode;
+
+exit_unlock:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static void bno055_uninit(void *arg)
+{
+	struct bno055_priv *priv = arg;
+
+	/* stop the IMU */
+	bno055_operation_mode_do_set(priv, BNO055_OPR_MODE_CONFIG);
+}
+
+#define BNO055_CHANNEL(_type, _axis, _index, _address, _sep, _sh, _avail) {	\
+	.address = _address,							\
+	.type = _type,								\
+	.modified = 1,								\
+	.channel2 = IIO_MOD_##_axis,						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | (_sep),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | (_sh),		\
+	.info_mask_shared_by_type_available = _avail,				\
+	.scan_index = _index,							\
+	.scan_type = {								\
+		.sign = 's',							\
+		.realbits = 16,							\
+		.storagebits = 16,						\
+		.endianness = IIO_LE,						\
+		.repeat = IIO_MOD_##_axis == IIO_MOD_QUATERNION ? 4 : 0,        \
+	},									\
+}
+
+/* scan indexes follow DATA register order */
+enum bno055_scan_axis {
+	BNO055_SCAN_ACCEL_X,
+	BNO055_SCAN_ACCEL_Y,
+	BNO055_SCAN_ACCEL_Z,
+	BNO055_SCAN_MAGN_X,
+	BNO055_SCAN_MAGN_Y,
+	BNO055_SCAN_MAGN_Z,
+	BNO055_SCAN_GYRO_X,
+	BNO055_SCAN_GYRO_Y,
+	BNO055_SCAN_GYRO_Z,
+	BNO055_SCAN_YAW,
+	BNO055_SCAN_ROLL,
+	BNO055_SCAN_PITCH,
+	BNO055_SCAN_QUATERNION,
+	BNO055_SCAN_LIA_X,
+	BNO055_SCAN_LIA_Y,
+	BNO055_SCAN_LIA_Z,
+	BNO055_SCAN_GRAVITY_X,
+	BNO055_SCAN_GRAVITY_Y,
+	BNO055_SCAN_GRAVITY_Z,
+	BNO055_SCAN_TIMESTAMP,
+	_BNO055_SCAN_MAX
+};
+
+static const struct iio_chan_spec bno055_channels[] = {
+	/* accelerometer */
+	BNO055_CHANNEL(IIO_ACCEL, X, BNO055_SCAN_ACCEL_X,
+		       BNO055_ACC_DATA_X_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY)),
+	BNO055_CHANNEL(IIO_ACCEL, Y, BNO055_SCAN_ACCEL_Y,
+		       BNO055_ACC_DATA_Y_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY)),
+	BNO055_CHANNEL(IIO_ACCEL, Z, BNO055_SCAN_ACCEL_Z,
+		       BNO055_ACC_DATA_Z_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY)),
+	/* gyroscope */
+	BNO055_CHANNEL(IIO_ANGL_VEL, X, BNO055_SCAN_GYRO_X,
+		       BNO055_GYR_DATA_X_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) |
+		       BIT(IIO_CHAN_INFO_SCALE)),
+	BNO055_CHANNEL(IIO_ANGL_VEL, Y, BNO055_SCAN_GYRO_Y,
+		       BNO055_GYR_DATA_Y_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) |
+		       BIT(IIO_CHAN_INFO_SCALE)),
+	BNO055_CHANNEL(IIO_ANGL_VEL, Z, BNO055_SCAN_GYRO_Z,
+		       BNO055_GYR_DATA_Z_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		       BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) |
+		       BIT(IIO_CHAN_INFO_SCALE)),
+	/* magnetometer */
+	BNO055_CHANNEL(IIO_MAGN, X, BNO055_SCAN_MAGN_X,
+		       BNO055_MAG_DATA_X_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_SAMP_FREQ), BIT(IIO_CHAN_INFO_SAMP_FREQ)),
+	BNO055_CHANNEL(IIO_MAGN, Y, BNO055_SCAN_MAGN_Y,
+		       BNO055_MAG_DATA_Y_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_SAMP_FREQ), BIT(IIO_CHAN_INFO_SAMP_FREQ)),
+	BNO055_CHANNEL(IIO_MAGN, Z, BNO055_SCAN_MAGN_Z,
+		       BNO055_MAG_DATA_Z_LSB_REG, BIT(IIO_CHAN_INFO_OFFSET),
+		       BIT(IIO_CHAN_INFO_SAMP_FREQ), BIT(IIO_CHAN_INFO_SAMP_FREQ)),
+	/* euler angle */
+	BNO055_CHANNEL(IIO_ROT, YAW, BNO055_SCAN_YAW,
+		       BNO055_EUL_DATA_X_LSB_REG, 0, 0, 0),
+	BNO055_CHANNEL(IIO_ROT, ROLL, BNO055_SCAN_ROLL,
+		       BNO055_EUL_DATA_Y_LSB_REG, 0, 0, 0),
+	BNO055_CHANNEL(IIO_ROT, PITCH, BNO055_SCAN_PITCH,
+		       BNO055_EUL_DATA_Z_LSB_REG, 0, 0, 0),
+	/* quaternion */
+	BNO055_CHANNEL(IIO_ROT, QUATERNION, BNO055_SCAN_QUATERNION,
+		       BNO055_QUAT_DATA_W_LSB_REG, 0, 0, 0),
+
+	/* linear acceleration */
+	BNO055_CHANNEL(IIO_ACCEL, LINEAR_X, BNO055_SCAN_LIA_X,
+		       BNO055_LIA_DATA_X_LSB_REG, 0, 0, 0),
+	BNO055_CHANNEL(IIO_ACCEL, LINEAR_Y, BNO055_SCAN_LIA_Y,
+		       BNO055_LIA_DATA_Y_LSB_REG, 0, 0, 0),
+	BNO055_CHANNEL(IIO_ACCEL, LINEAR_Z, BNO055_SCAN_LIA_Z,
+		       BNO055_LIA_DATA_Z_LSB_REG, 0, 0, 0),
+
+	/* gravity vector */
+	BNO055_CHANNEL(IIO_GRAVITY, X, BNO055_SCAN_GRAVITY_X,
+		       BNO055_GRAVITY_DATA_X_LSB_REG, 0, 0, 0),
+	BNO055_CHANNEL(IIO_GRAVITY, Y, BNO055_SCAN_GRAVITY_Y,
+		       BNO055_GRAVITY_DATA_Y_LSB_REG, 0, 0, 0),
+	BNO055_CHANNEL(IIO_GRAVITY, Z, BNO055_SCAN_GRAVITY_Z,
+		       BNO055_GRAVITY_DATA_Z_LSB_REG, 0, 0, 0),
+
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.scan_index = -1,
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(BNO055_SCAN_TIMESTAMP),
+};
+
+static int bno055_get_regmask(struct bno055_priv *priv, int *val, int *val2,
+			      int reg, int mask, struct bno055_sysfs_attr *attr)
+{
+	const int shift = __ffs(mask);
+	int hwval, idx;
+	int ret;
+	int i;
+
+	ret = regmap_read(priv->regmap, reg, &hwval);
+	if (ret)
+		return ret;
+
+	idx = (hwval & mask) >> shift;
+	if (attr->hw_xlate)
+		for (i = 0; i < attr->len; i++)
+			if (attr->hw_xlate[i] == idx) {
+				idx = i;
+				break;
+			}
+	if (attr->type == IIO_VAL_INT) {
+		*val = attr->vals[idx];
+	} else { /* IIO_VAL_INT_PLUS_MICRO or IIO_VAL_FRACTIONAL */
+		*val = attr->vals[idx * 2];
+		*val2 = attr->vals[idx * 2 + 1];
+	}
+
+	return attr->type;
+}
+
+static int bno055_set_regmask(struct bno055_priv *priv, int val, int val2,
+			      int reg, int mask, struct bno055_sysfs_attr *attr)
+{
+	const int shift = __ffs(mask);
+	int best_delta;
+	int req_val;
+	int tbl_val;
+	bool first;
+	int delta;
+	int hwval;
+	int ret;
+	int len;
+	int i;
+
+	/*
+	 * The closest value the HW supports is only one in fusion mode,
+	 * and it is autoselected, so don't do anything, just return OK,
+	 * as the closest possible value has been (virtually) selected
+	 */
+	if (priv->operation_mode != BNO055_OPR_MODE_AMG)
+		return 0;
+
+	len = attr->len;
+
+	/*
+	 * We always get a request in INT_PLUS_MICRO, but we
+	 * take care of the micro part only when we really have
+	 * non-integer tables. This prevents 32-bit overflow with
+	 * larger integers contained in integer tables.
+	 */
+	req_val = val;
+	if (attr->type != IIO_VAL_INT) {
+		len /= 2;
+		req_val = min(val, 2147) * 1000000 + val2;
+	}
+
+	first = true;
+	for (i = 0; i < len; i++) {
+		switch (attr->type) {
+		case IIO_VAL_INT:
+			tbl_val = attr->vals[i];
+			break;
+		case IIO_VAL_INT_PLUS_MICRO:
+			WARN_ON(attr->vals[i * 2] > 2147);
+			tbl_val = attr->vals[i * 2] * 1000000 +
+				attr->vals[i * 2 + 1];
+			break;
+		case IIO_VAL_FRACTIONAL:
+			WARN_ON(attr->vals[i * 2] > 4294);
+			tbl_val = attr->vals[i * 2] * 1000000 /
+				attr->vals[i * 2 + 1];
+			break;
+		default:
+			return -EINVAL;
+		}
+		delta = abs(tbl_val - req_val);
+		if (delta < best_delta || first) {
+			best_delta = delta;
+			hwval = i;
+			first = false;
+		}
+	}
+
+	if (attr->hw_xlate)
+		hwval = attr->hw_xlate[hwval];
+
+	ret = bno055_operation_mode_do_set(priv, BNO055_OPR_MODE_CONFIG);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(priv->regmap, reg, mask, hwval << shift);
+	if (ret)
+		return ret;
+
+	return bno055_operation_mode_do_set(priv, BNO055_OPR_MODE_AMG);
+}
+
+static int bno055_read_simple_chan(struct iio_dev *indio_dev,
+				   struct iio_chan_spec const *chan,
+				   int *val, int *val2, long mask)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	__le16 raw_val;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = regmap_bulk_read(priv->regmap, chan->address,
+				       &raw_val, sizeof(raw_val));
+		if (ret < 0)
+			return ret;
+		*val = sign_extend32(le16_to_cpu(raw_val), 15);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		if (priv->operation_mode != BNO055_OPR_MODE_AMG) {
+			*val = 0;
+		} else {
+			ret = regmap_bulk_read(priv->regmap,
+					       chan->address +
+					       BNO055_REG_OFFSET_ADDR,
+					       &raw_val, sizeof(raw_val));
+			if (ret < 0)
+				return ret;
+			/*
+			 * IMU reports sensor offsets; IIO wants correction
+			 * offsets, thus we need the 'minus' here.
+			 */
+			*val = -sign_extend32(le16_to_cpu(raw_val), 15);
+		}
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 1;
+		switch (chan->type) {
+		case IIO_GRAVITY:
+			/* Table 3-35: 1 m/s^2 = 100 LSB */
+		case IIO_ACCEL:
+			/* Table 3-17: 1 m/s^2 = 100 LSB */
+			*val2 = 100;
+			break;
+		case IIO_MAGN:
+			/*
+			 * Table 3-19: 1 uT = 16 LSB.  But we need
+			 * Gauss: 1G = 0.1 uT.
+			 */
+			*val2 = 160;
+			break;
+		case IIO_ANGL_VEL:
+			/*
+			 * Table 3-22: 1 Rps = 900 LSB
+			 * .. but this is not exactly true. See comment at the
+			 * beginning of this file.
+			 */
+			if (priv->operation_mode != BNO055_OPR_MODE_AMG) {
+				*val = bno055_gyr_scale.fusion_vals[0];
+				*val2 = bno055_gyr_scale.fusion_vals[1];
+				return IIO_VAL_FRACTIONAL;
+			}
+
+			return bno055_get_regmask(priv, val, val2,
+						  BNO055_GYR_CONFIG_REG,
+						  BNO055_GYR_CONFIG_RANGE_MASK,
+						  &bno055_gyr_scale);
+			break;
+		case IIO_ROT:
+			/* Table 3-28: 1 degree = 16 LSB */
+			*val2 = 16;
+			break;
+		default:
+			return -EINVAL;
+		}
+		return IIO_VAL_FRACTIONAL;
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (chan->type != IIO_MAGN)
+			return -EINVAL;
+
+		return bno055_get_regmask(priv, val, val2,
+					  BNO055_MAG_CONFIG_REG,
+					  BNO055_MAG_CONFIG_ODR_MASK,
+					  &bno055_mag_odr);
+
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			return bno055_get_regmask(priv, val, val2,
+						  BNO055_GYR_CONFIG_REG,
+						  BNO055_GYR_CONFIG_LPF_MASK,
+						  &bno055_gyr_lpf);
+		case IIO_ACCEL:
+			return bno055_get_regmask(priv, val, val2,
+						  BNO055_ACC_CONFIG_REG,
+						  BNO055_ACC_CONFIG_LPF_MASK,
+						  &bno055_acc_lpf);
+		default:
+			return -EINVAL;
+		}
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bno055_sysfs_attr_avail(struct bno055_priv *priv, struct bno055_sysfs_attr *attr,
+				   const int **vals, int *length)
+{
+	if (priv->operation_mode != BNO055_OPR_MODE_AMG) {
+		/* locked when fusion enabled */
+		*vals = attr->fusion_vals;
+		if (attr->type == IIO_VAL_INT)
+			*length = 1;
+		else
+			*length = 2; /* IIO_VAL_INT_PLUS_MICRO or IIO_VAL_FRACTIONAL*/
+	} else {
+		*vals = attr->vals;
+		*length = attr->len;
+	}
+
+	return attr->type;
+}
+
+static int bno055_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			*type = bno055_sysfs_attr_avail(priv, &bno055_gyr_scale,
+							vals, length);
+			return IIO_AVAIL_LIST;
+		default:
+			return -EINVAL;
+		}
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+			*type = bno055_sysfs_attr_avail(priv, &bno055_gyr_lpf,
+							vals, length);
+			return IIO_AVAIL_LIST;
+		case IIO_ACCEL:
+			*type = bno055_sysfs_attr_avail(priv, &bno055_acc_lpf,
+							vals, length);
+			return IIO_AVAIL_LIST;
+		default:
+			return -EINVAL;
+		}
+
+		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		switch (chan->type) {
+		case IIO_MAGN:
+			*type = bno055_sysfs_attr_avail(priv, &bno055_mag_odr,
+							vals, length);
+			return IIO_AVAIL_LIST;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bno055_read_temp_chan(struct iio_dev *indio_dev, int *val)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	unsigned int raw_val;
+	int ret;
+
+	ret = regmap_read(priv->regmap, BNO055_TEMP_REG, &raw_val);
+	if (ret < 0)
+		return ret;
+
+	/*
+	 * Tables 3-36 and 3-37: one byte of priv, signed, 1 LSB = 1C.
+	 * ABI wants milliC.
+	 */
+	*val = raw_val * 1000;
+
+	return IIO_VAL_INT;
+}
+
+static int bno055_read_quaternion(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  int size, int *vals, int *val_len,
+				  long mask)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	__le16 raw_vals[4];
+	int i, ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (size < 4)
+			return -EINVAL;
+		ret = regmap_bulk_read(priv->regmap,
+				       BNO055_QUAT_DATA_W_LSB_REG,
+				       raw_vals, sizeof(raw_vals));
+		if (ret < 0)
+			return ret;
+		for (i = 0; i < 4; i++)
+			vals[i] = sign_extend32(le16_to_cpu(raw_vals[i]), 15);
+		*val_len = 4;
+		return IIO_VAL_INT_MULTIPLE;
+	case IIO_CHAN_INFO_SCALE:
+		/* Table 3-31: 1 quaternion = 2^14 LSB */
+		if (size < 2)
+			return -EINVAL;
+		vals[0] = 1;
+		vals[1] = 14;
+		return IIO_VAL_FRACTIONAL_LOG2;
+	default:
+		return -EINVAL;
+	}
+}
+
+static bool bno055_is_chan_readable(struct iio_dev *indio_dev,
+				    struct iio_chan_spec const *chan)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+
+	if (priv->operation_mode != BNO055_OPR_MODE_AMG)
+		return true;
+
+	switch (chan->type) {
+	case IIO_GRAVITY:
+	case IIO_ROT:
+		return false;
+	case IIO_ACCEL:
+		if (chan->channel2 == IIO_MOD_LINEAR_X ||
+		    chan->channel2 == IIO_MOD_LINEAR_Y ||
+		    chan->channel2 == IIO_MOD_LINEAR_Z)
+			return false;
+		return true;
+	default:
+		return true;
+	}
+}
+
+static int _bno055_read_raw_multi(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  int size, int *vals, int *val_len,
+				  long mask)
+{
+	if (!bno055_is_chan_readable(indio_dev, chan))
+		return -EBUSY;
+
+	switch (chan->type) {
+	case IIO_MAGN:
+	case IIO_ACCEL:
+	case IIO_ANGL_VEL:
+	case IIO_GRAVITY:
+		if (size < 2)
+			return -EINVAL;
+		*val_len = 2;
+		return bno055_read_simple_chan(indio_dev, chan,
+					       &vals[0], &vals[1],
+					       mask);
+	case IIO_TEMP:
+		*val_len = 1;
+		return bno055_read_temp_chan(indio_dev, &vals[0]);
+	case IIO_ROT:
+		/*
+		 * Rotation is exposed as either a quaternion or three
+		 * Euler angles.
+		 */
+		if (chan->channel2 == IIO_MOD_QUATERNION)
+			return bno055_read_quaternion(indio_dev, chan,
+						      size, vals,
+						      val_len, mask);
+		if (size < 2)
+			return -EINVAL;
+		*val_len = 2;
+		return bno055_read_simple_chan(indio_dev, chan,
+					       &vals[0], &vals[1],
+					       mask);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bno055_read_raw_multi(struct iio_dev *indio_dev,
+				 struct iio_chan_spec const *chan,
+				 int size, int *vals, int *val_len,
+				 long mask)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&priv->lock);
+	ret = _bno055_read_raw_multi(indio_dev, chan, size,
+				     vals, val_len, mask);
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static int _bno055_write_raw(struct iio_dev *iio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct bno055_priv *priv = iio_priv(iio_dev);
+
+	switch (chan->type) {
+	case IIO_MAGN:
+		switch (mask) {
+		case IIO_CHAN_INFO_SAMP_FREQ:
+			return bno055_set_regmask(priv, val, val2,
+						  BNO055_MAG_CONFIG_REG,
+						  BNO055_MAG_CONFIG_ODR_MASK,
+						  &bno055_mag_odr);
+		default:
+			return -EINVAL;
+		}
+	case IIO_ACCEL:
+		switch (mask) {
+		case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+			return bno055_set_regmask(priv, val, val2,
+						  BNO055_ACC_CONFIG_REG,
+						  BNO055_ACC_CONFIG_LPF_MASK,
+						  &bno055_acc_lpf);
+
+		default:
+			return -EINVAL;
+		}
+	case IIO_ANGL_VEL:
+		switch (mask) {
+		case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+			return bno055_set_regmask(priv, val, val2,
+						  BNO055_GYR_CONFIG_REG,
+						  BNO055_GYR_CONFIG_LPF_MASK,
+						  &bno055_gyr_lpf);
+		case IIO_CHAN_INFO_SCALE:
+			return bno055_set_regmask(priv, val, val2,
+						  BNO055_GYR_CONFIG_REG,
+						  BNO055_GYR_CONFIG_RANGE_MASK,
+						  &bno055_gyr_scale);
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int bno055_write_raw(struct iio_dev *iio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
+{
+	struct bno055_priv *priv = iio_priv(iio_dev);
+	int ret;
+
+	mutex_lock(&priv->lock);
+	ret = _bno055_write_raw(iio_dev, chan, val, val2, mask);
+	mutex_unlock(&priv->lock);
+
+	return ret;
+}
+
+static ssize_t in_accel_range_raw_available_show(struct device *dev,
+						 struct device_attribute *attr,
+						 char *buf)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+	int len = 0;
+	int i;
+
+	if (priv->operation_mode != BNO055_OPR_MODE_AMG)
+		return sysfs_emit(buf, "%d\n", bno055_acc_range.fusion_vals[0]);
+
+	for (i = 0; i < bno055_acc_range.len; i++)
+		len += sysfs_emit_at(buf, len, "%d ", bno055_acc_range.vals[i]);
+	buf[len - 1] = '\n';
+
+	return len;
+}
+
+static ssize_t fusion_enable_show(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+
+	return sysfs_emit(buf, "%d\n",
+			  priv->operation_mode != BNO055_OPR_MODE_AMG);
+}
+
+static ssize_t fusion_enable_store(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	bool en;
+	int ret;
+
+	if (indio_dev->active_scan_mask &&
+	    !bitmap_empty(indio_dev->active_scan_mask, _BNO055_SCAN_MAX))
+		return -EBUSY;
+
+	ret = kstrtobool(buf, &en);
+	if (ret)
+		return -EINVAL;
+
+	if (!en)
+		return bno055_operation_mode_set(priv, BNO055_OPR_MODE_AMG) ?: len;
+
+	/*
+	 * Coming from AMG means the FMC was off, just switch to fusion but
+	 * don't change anything that doesn't belong to us (i.e let FMC stay off).
+	 * Coming from any other fusion mode means we don't need to do anything.
+	 */
+	if (priv->operation_mode == BNO055_OPR_MODE_AMG)
+		return  bno055_operation_mode_set(priv, BNO055_OPR_MODE_FUSION_FMC_OFF) ?: len;
+
+	return len;
+}
+
+static ssize_t in_magn_calibration_fast_enable_show(struct device *dev,
+						    struct device_attribute *attr,
+						    char *buf)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+
+	return sysfs_emit(buf, "%d\n",
+			  priv->operation_mode == BNO055_OPR_MODE_FUSION);
+}
+
+static ssize_t in_magn_calibration_fast_enable_store(struct device *dev,
+						     struct device_attribute *attr,
+						     const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	int ret;
+
+	if (indio_dev->active_scan_mask &&
+	    !bitmap_empty(indio_dev->active_scan_mask, _BNO055_SCAN_MAX))
+		return -EBUSY;
+
+	if (sysfs_streq(buf, "0")) {
+		if (priv->operation_mode == BNO055_OPR_MODE_FUSION) {
+			ret = bno055_operation_mode_set(priv, BNO055_OPR_MODE_FUSION_FMC_OFF);
+			if (ret)
+				return ret;
+		}
+	} else {
+		if (priv->operation_mode == BNO055_OPR_MODE_AMG)
+			return -EINVAL;
+
+		if (priv->operation_mode != BNO055_OPR_MODE_FUSION) {
+			ret = bno055_operation_mode_set(priv, BNO055_OPR_MODE_FUSION);
+			if (ret)
+				return ret;
+		}
+	}
+
+	return len;
+}
+
+static ssize_t in_accel_range_raw_show(struct device *dev,
+				       struct device_attribute *attr,
+				       char *buf)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+	int val;
+	int ret;
+
+	ret = bno055_get_regmask(priv, &val, NULL,
+				 BNO055_ACC_CONFIG_REG,
+				 BNO055_ACC_CONFIG_RANGE_MASK,
+				 &bno055_acc_range);
+	if (ret < 0)
+		return ret;
+
+	return sysfs_emit(buf, "%d\n", val);
+}
+
+static ssize_t in_accel_range_raw_store(struct device *dev,
+					struct device_attribute *attr,
+					const char *buf, size_t len)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+	unsigned long val;
+	int ret;
+
+	ret = kstrtoul(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	mutex_lock(&priv->lock);
+	ret = bno055_set_regmask(priv, val, 0,
+				 BNO055_ACC_CONFIG_REG,
+				 BNO055_ACC_CONFIG_RANGE_MASK,
+				 &bno055_acc_range);
+	mutex_unlock(&priv->lock);
+
+	return ret ?: len;
+}
+
+static ssize_t bno055_get_calib_status(struct device *dev, char *buf, int which)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+	int calib;
+	int ret;
+	int val;
+
+	if (priv->operation_mode == BNO055_OPR_MODE_AMG ||
+	    (priv->operation_mode == BNO055_OPR_MODE_FUSION_FMC_OFF &&
+	     which == BNO055_CALIB_STAT_MAGN_SHIFT)) {
+		calib = 0;
+	} else {
+		mutex_lock(&priv->lock);
+		ret = regmap_read(priv->regmap, BNO055_CALIB_STAT_REG, &val);
+		mutex_unlock(&priv->lock);
+
+		if (ret)
+			return -EIO;
+
+		calib = ((val >> which) & GENMASK(1, 0)) + 1;
+	}
+
+	return sysfs_emit(buf, "%d\n", calib);
+}
+
+static ssize_t serialnumber_show(struct device *dev,
+				 struct device_attribute *attr,
+				 char *buf)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(dev));
+
+	return sysfs_emit(buf, "%*ph\n", BNO055_UID_LEN, priv->uid);
+}
+
+static ssize_t calibration_data_read(struct file *filp, struct kobject *kobj,
+				     struct bin_attribute *bin_attr, char *buf,
+				     loff_t pos, size_t count)
+{
+	struct bno055_priv *priv = iio_priv(dev_to_iio_dev(kobj_to_dev(kobj)));
+	u8 data[BNO055_CALDATA_LEN];
+	int ret;
+
+	/*
+	 * Calibration data is volatile; reading it in chunks will possibly
+	 * results in inconsistent data. We require the user to read the whole
+	 * blob in a single chunk
+	 */
+	if (count < BNO055_CALDATA_LEN || pos)
+		return -EINVAL;
+
+	mutex_lock(&priv->lock);
+	ret = bno055_operation_mode_do_set(priv, BNO055_OPR_MODE_CONFIG);
+	if (ret)
+		goto exit_unlock;
+
+	ret = regmap_bulk_read(priv->regmap, BNO055_CALDATA_START, data,
+			       BNO055_CALDATA_LEN);
+	if (ret)
+		goto exit_unlock;
+
+	ret = bno055_operation_mode_do_set(priv, priv->operation_mode);
+	if (ret)
+		goto exit_unlock;
+
+	memcpy(buf, data, BNO055_CALDATA_LEN);
+
+	ret = BNO055_CALDATA_LEN;
+exit_unlock:
+	mutex_unlock(&priv->lock);
+	return ret;
+}
+
+static ssize_t sys_calibration_auto_status_show(struct device *dev,
+						struct device_attribute *a,
+						char *buf)
+{
+	return bno055_get_calib_status(dev, buf, BNO055_CALIB_STAT_SYS_SHIFT);
+}
+
+static ssize_t in_accel_calibration_auto_status_show(struct device *dev,
+						     struct device_attribute *a,
+						     char *buf)
+{
+	return bno055_get_calib_status(dev, buf, BNO055_CALIB_STAT_ACCEL_SHIFT);
+}
+
+static ssize_t in_gyro_calibration_auto_status_show(struct device *dev,
+						    struct device_attribute *a,
+						    char *buf)
+{
+	return bno055_get_calib_status(dev, buf, BNO055_CALIB_STAT_GYRO_SHIFT);
+}
+
+static ssize_t in_magn_calibration_auto_status_show(struct device *dev,
+						    struct device_attribute *a,
+						    char *buf)
+{
+	return bno055_get_calib_status(dev, buf, BNO055_CALIB_STAT_MAGN_SHIFT);
+}
+
+static int bno055_debugfs_reg_access(struct iio_dev *iio_dev, unsigned int reg,
+				     unsigned int writeval, unsigned int *readval)
+{
+	struct bno055_priv *priv = iio_priv(iio_dev);
+
+	if (readval)
+		return regmap_read(priv->regmap, reg, readval);
+	else
+		return regmap_write(priv->regmap, reg, writeval);
+}
+
+static ssize_t bno055_show_fw_version(struct file *file, char __user *userbuf,
+				      size_t count, loff_t *ppos)
+{
+	struct bno055_priv *priv = file->private_data;
+	int rev, ver;
+	char *buf;
+	int ret;
+
+	ret = regmap_read(priv->regmap, BNO055_SW_REV_LSB_REG, &rev);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(priv->regmap, BNO055_SW_REV_MSB_REG, &ver);
+	if (ret)
+		return ret;
+
+	buf = kasprintf(GFP_KERNEL, "ver: 0x%x, rev: 0x%x\n", ver, rev);
+	if (!buf)
+		return -ENOMEM;
+
+	ret = simple_read_from_buffer(userbuf, count, ppos, buf, strlen(buf));
+	kfree(buf);
+
+	return ret;
+}
+
+static const struct file_operations bno055_fw_version_ops = {
+	.open = simple_open,
+	.read = bno055_show_fw_version,
+	.llseek = default_llseek,
+	.owner = THIS_MODULE,
+};
+
+static void bno055_debugfs_remove(void *_priv)
+{
+	struct bno055_priv *priv = _priv;
+
+	debugfs_remove(priv->debugfs);
+	priv->debugfs = NULL;
+}
+
+static void bno055_debugfs_init(struct iio_dev *iio_dev)
+{
+	struct bno055_priv *priv = iio_priv(iio_dev);
+
+	priv->debugfs = debugfs_create_file("firmware_version", 0400,
+					    iio_get_debugfs_dentry(iio_dev),
+					    priv, &bno055_fw_version_ops);
+	if (!IS_ERR(priv->debugfs))
+		devm_add_action_or_reset(priv->dev, bno055_debugfs_remove,
+					 priv);
+	if (IS_ERR_OR_NULL(priv->debugfs))
+		dev_warn(priv->dev, "failed to setup debugfs");
+}
+
+static IIO_DEVICE_ATTR_RW(fusion_enable, 0);
+static IIO_DEVICE_ATTR_RW(in_magn_calibration_fast_enable, 0);
+static IIO_DEVICE_ATTR_RW(in_accel_range_raw, 0);
+
+static IIO_DEVICE_ATTR_RO(in_accel_range_raw_available, 0);
+static IIO_DEVICE_ATTR_RO(sys_calibration_auto_status, 0);
+static IIO_DEVICE_ATTR_RO(in_accel_calibration_auto_status, 0);
+static IIO_DEVICE_ATTR_RO(in_gyro_calibration_auto_status, 0);
+static IIO_DEVICE_ATTR_RO(in_magn_calibration_auto_status, 0);
+static IIO_DEVICE_ATTR_RO(serialnumber, 0);
+
+static struct attribute *bno055_attrs[] = {
+	&iio_dev_attr_in_accel_range_raw_available.dev_attr.attr,
+	&iio_dev_attr_in_accel_range_raw.dev_attr.attr,
+	&iio_dev_attr_fusion_enable.dev_attr.attr,
+	&iio_dev_attr_in_magn_calibration_fast_enable.dev_attr.attr,
+	&iio_dev_attr_sys_calibration_auto_status.dev_attr.attr,
+	&iio_dev_attr_in_accel_calibration_auto_status.dev_attr.attr,
+	&iio_dev_attr_in_gyro_calibration_auto_status.dev_attr.attr,
+	&iio_dev_attr_in_magn_calibration_auto_status.dev_attr.attr,
+	&iio_dev_attr_serialnumber.dev_attr.attr,
+	NULL
+};
+
+static BIN_ATTR_RO(calibration_data, BNO055_CALDATA_LEN);
+
+static struct bin_attribute *bno055_bin_attrs[] = {
+	&bin_attr_calibration_data,
+	NULL
+};
+
+static const struct attribute_group bno055_attrs_group = {
+	.attrs = bno055_attrs,
+	.bin_attrs = bno055_bin_attrs,
+};
+
+static const struct iio_info bno055_info = {
+	.read_raw_multi = bno055_read_raw_multi,
+	.read_avail = bno055_read_avail,
+	.write_raw = bno055_write_raw,
+	.attrs = &bno055_attrs_group,
+	.debugfs_reg_access = bno055_debugfs_reg_access,
+};
+
+/*
+ * Reads len samples from the HW, stores them in buf starting from buf_idx,
+ * and applies mask to cull (skip) unneeded samples.
+ * Updates buf_idx incrementing with the number of stored samples.
+ * Samples from HW are transferred into buf, then in-place copy on buf is
+ * performed in order to cull samples that need to be skipped.
+ * This avoids copies of the first samples until we hit the 1st sample to skip,
+ * and also avoids having an extra bounce buffer.
+ * buf must be able to contain len elements in spite of how many samples we are
+ * going to cull.
+ */
+static int bno055_scan_xfer(struct bno055_priv *priv,
+			    int start_ch, int len, unsigned long mask,
+			    __le16 *buf, int *buf_idx)
+{
+	const int base = BNO055_ACC_DATA_X_LSB_REG;
+	bool quat_in_read = false;
+	int buf_base = *buf_idx;
+	__le16 *dst, *src;
+	int offs_fixup = 0;
+	int xfer_len = len;
+	int ret;
+	int i, n;
+
+	if (!mask)
+		return 0;
+
+	/*
+	 * All channels are made up 1 16-bit sample, except for quaternion that
+	 * is made up 4 16-bit values.
+	 * For us the quaternion CH is just like 4 regular CHs.
+	 * If our read starts past the quaternion make sure to adjust the
+	 * starting offset; if the quaternion is contained in our scan then make
+	 * sure to adjust the read len.
+	 */
+	if (start_ch > BNO055_SCAN_QUATERNION) {
+		start_ch += 3;
+	} else if ((start_ch <= BNO055_SCAN_QUATERNION) &&
+		 ((start_ch + len) > BNO055_SCAN_QUATERNION)) {
+		quat_in_read = true;
+		xfer_len += 3;
+	}
+
+	ret = regmap_bulk_read(priv->regmap,
+			       base + start_ch * sizeof(__le16),
+			       buf + buf_base,
+			       xfer_len * sizeof(__le16));
+	if (ret)
+		return ret;
+
+	for_each_set_bit(i, &mask, len) {
+		if (quat_in_read && ((start_ch + i) > BNO055_SCAN_QUATERNION))
+			offs_fixup = 3;
+
+		dst = buf + *buf_idx;
+		src = buf + buf_base + offs_fixup + i;
+
+		n = (start_ch + i == BNO055_SCAN_QUATERNION) ? 4 : 1;
+
+		if (dst != src)
+			memcpy(dst, src, n * sizeof(__le16));
+
+		*buf_idx += n;
+	}
+	return 0;
+}
+
+static irqreturn_t bno055_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *iio_dev = pf->indio_dev;
+	struct bno055_priv *priv = iio_priv(iio_dev);
+	int xfer_start, start, end, prev_end;
+	unsigned long mask;
+	int quat_extra_len;
+	bool first = true;
+	int buf_idx = 0;
+	bool thr_hit;
+	int ret;
+
+	mutex_lock(&priv->lock);
+
+	/*
+	 * Walk the bitmap and eventually perform several transfers.
+	 * Bitmap ones-fields that are separated by gaps <= xfer_burst_break_thr
+	 * will be included in same transfer.
+	 * Every time the bitmap contains a gap wider than xfer_burst_break_thr
+	 * then we split the transfer, skipping the gap.
+	 */
+	for_each_set_bitrange(start, end, iio_dev->active_scan_mask,
+			      iio_dev->masklength) {
+		/*
+		 * First transfer will start from the beginning of the first
+		 * ones-field in the bitmap
+		 */
+		if (first) {
+			xfer_start = start;
+		} else {
+			/*
+			 * We found the next ones-field; check whether to
+			 * include it in * the current transfer or not (i.e.
+			 * let's perform the current * transfer and prepare for
+			 * another one).
+			 */
+
+			/*
+			 * In case the zeros-gap contains the quaternion bit,
+			 * then its length is actually 4 words instead of 1
+			 * (i.e. +3 wrt other channels).
+			 */
+			quat_extra_len = ((start > BNO055_SCAN_QUATERNION) &&
+					  (prev_end <= BNO055_SCAN_QUATERNION)) ? 3 : 0;
+
+			/* If the gap is wider than xfer_burst_break_thr then.. */
+			thr_hit = (start - prev_end + quat_extra_len) >
+				priv->xfer_burst_break_thr;
+
+			/*
+			 * .. transfer all the data up to the gap. Then set the
+			 * next transfer start index at right after the gap
+			 * (i.e. at the start of this ones-field).
+			 */
+			if (thr_hit) {
+				mask = *iio_dev->active_scan_mask >> xfer_start;
+				ret = bno055_scan_xfer(priv, xfer_start,
+						       prev_end - xfer_start,
+						       mask, priv->buf.chans, &buf_idx);
+				if (ret)
+					goto done;
+				xfer_start = start;
+			}
+		}
+		first = false;
+		prev_end = end;
+	}
+
+	/*
+	 * We finished walking the bitmap; no more gaps to check for. Just
+	 * perform the current transfer.
+	 */
+	mask = *iio_dev->active_scan_mask >> xfer_start;
+	ret = bno055_scan_xfer(priv, xfer_start,
+			       prev_end - xfer_start,
+			       mask, priv->buf.chans, &buf_idx);
+
+	if (!ret)
+		iio_push_to_buffers_with_timestamp(iio_dev,
+						   &priv->buf, pf->timestamp);
+done:
+	mutex_unlock(&priv->lock);
+	iio_trigger_notify_done(iio_dev->trig);
+	return IRQ_HANDLED;
+}
+
+static int bno055_buffer_preenable(struct iio_dev *indio_dev)
+{
+	struct bno055_priv *priv = iio_priv(indio_dev);
+	const unsigned long fusion_mask =
+		BIT(BNO055_SCAN_YAW) |
+		BIT(BNO055_SCAN_ROLL) |
+		BIT(BNO055_SCAN_PITCH) |
+		BIT(BNO055_SCAN_QUATERNION) |
+		BIT(BNO055_SCAN_LIA_X) |
+		BIT(BNO055_SCAN_LIA_Y) |
+		BIT(BNO055_SCAN_LIA_Z) |
+		BIT(BNO055_SCAN_GRAVITY_X) |
+		BIT(BNO055_SCAN_GRAVITY_Y) |
+		BIT(BNO055_SCAN_GRAVITY_Z);
+
+	if (priv->operation_mode == BNO055_OPR_MODE_AMG &&
+	    bitmap_intersects(indio_dev->active_scan_mask, &fusion_mask,
+			      _BNO055_SCAN_MAX))
+		return -EBUSY;
+	return 0;
+}
+
+static const struct iio_buffer_setup_ops bno055_buffer_setup_ops = {
+	.preenable = bno055_buffer_preenable,
+};
+
+int bno055_probe(struct device *dev, struct regmap *regmap,
+		 int xfer_burst_break_thr, bool sw_reset)
+{
+	const struct firmware *caldata = NULL;
+	struct bno055_priv *priv;
+	struct iio_dev *iio_dev;
+	char *fw_name_buf;
+	unsigned int val;
+	int rev, ver;
+	int ret;
+
+	iio_dev = devm_iio_device_alloc(dev, sizeof(*priv));
+	if (!iio_dev)
+		return -ENOMEM;
+
+	iio_dev->name = "bno055";
+	priv = iio_priv(iio_dev);
+	mutex_init(&priv->lock);
+	priv->regmap = regmap;
+	priv->dev = dev;
+	priv->xfer_burst_break_thr = xfer_burst_break_thr;
+	priv->sw_reset = sw_reset;
+
+	priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(priv->reset_gpio))
+		return dev_err_probe(dev, PTR_ERR(priv->reset_gpio), "Failed to get reset GPIO\n");
+
+	priv->clk = devm_clk_get_optional_enabled(dev, "clk");
+	if (IS_ERR(priv->clk))
+		return dev_err_probe(dev, PTR_ERR(priv->clk), "Failed to get CLK\n");
+
+	if (priv->reset_gpio) {
+		usleep_range(5000, 10000);
+		gpiod_set_value_cansleep(priv->reset_gpio, 1);
+		usleep_range(650000, 750000);
+	} else if (!sw_reset) {
+		dev_warn(dev, "No usable reset method; IMU may be unreliable\n");
+	}
+
+	ret = regmap_read(priv->regmap, BNO055_CHIP_ID_REG, &val);
+	if (ret)
+		return ret;
+
+	if (val != BNO055_CHIP_ID_MAGIC)
+		dev_warn(dev, "Unrecognized chip ID 0x%x\n", val);
+
+	/*
+	 * In case we haven't a HW reset pin, we can still reset the chip via
+	 * register write. This is probably nonsense in case we can't even
+	 * communicate with the chip or the chip isn't the one we expect (i.e.
+	 * we don't write to unknown chips), so we perform SW reset only after
+	 * chip magic ID check
+	 */
+	if (!priv->reset_gpio) {
+		ret = bno055_system_reset(priv);
+		if (ret)
+			return ret;
+	}
+
+	ret = regmap_read(priv->regmap, BNO055_SW_REV_LSB_REG, &rev);
+	if (ret)
+		return ret;
+
+	ret = regmap_read(priv->regmap, BNO055_SW_REV_MSB_REG, &ver);
+	if (ret)
+		return ret;
+
+	/*
+	 * The stock FW version contains a bug (see comment at the beginning of
+	 * this file) that causes the anglvel scale to be changed depending on
+	 * the chip range setting. We workaround this, but we don't know what
+	 * other FW versions might do.
+	 */
+	if (ver != 0x3 || rev != 0x11)
+		dev_warn(dev, "Untested firmware version. Anglvel scale may not work as expected\n");
+
+	ret = regmap_bulk_read(priv->regmap, BNO055_UID_LOWER_REG,
+			       priv->uid, BNO055_UID_LEN);
+	if (ret)
+		return ret;
+
+	/* Sensor calibration data */
+	fw_name_buf = kasprintf(GFP_KERNEL, BNO055_FW_UID_FMT,
+				BNO055_UID_LEN, priv->uid);
+	if (!fw_name_buf)
+		return -ENOMEM;
+
+	ret = request_firmware(&caldata, fw_name_buf, dev);
+	kfree(fw_name_buf);
+	if (ret)
+		ret = request_firmware(&caldata, BNO055_FW_GENERIC_NAME, dev);
+	if (ret) {
+		dev_notice(dev, "Calibration file load failed. See instruction in kernel Documentation/iio/bno055.rst\n");
+		ret = bno055_init(priv, NULL, 0);
+	} else {
+		ret = bno055_init(priv, caldata->data, caldata->size);
+		release_firmware(caldata);
+	}
+	if (ret)
+		return ret;
+
+	priv->operation_mode = BNO055_OPR_MODE_FUSION;
+	ret = bno055_operation_mode_do_set(priv, priv->operation_mode);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, bno055_uninit, priv);
+	if (ret)
+		return ret;
+
+	iio_dev->channels = bno055_channels;
+	iio_dev->num_channels = ARRAY_SIZE(bno055_channels);
+	iio_dev->info = &bno055_info;
+	iio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = devm_iio_triggered_buffer_setup(dev, iio_dev,
+					      iio_pollfunc_store_time,
+					      bno055_trigger_handler,
+					      &bno055_buffer_setup_ops);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_device_register(dev, iio_dev);
+	if (ret)
+		return ret;
+
+	bno055_debugfs_init(iio_dev);
+
+	return 0;
+}
+EXPORT_SYMBOL_NS_GPL(bno055_probe, IIO_BNO055);
+
+MODULE_AUTHOR("Andrea Merello <andrea.merello@iit.it>");
+MODULE_DESCRIPTION("Bosch BNO055 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/bno055/bno055.h b/drivers/iio/imu/bno055/bno055.h
new file mode 100644
index 000000000000..64f9fc95cebc
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055.h
@@ -0,0 +1,13 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+#ifndef __BNO055_H__
+#define __BNO055_H__
+
+#include <linux/regmap.h>
+#include <linux/types.h>
+
+struct device;
+int bno055_probe(struct device *dev, struct regmap *regmap,
+		 int xfer_burst_break_thr, bool sw_reset);
+extern const struct regmap_config bno055_regmap_config;
+
+#endif
diff --git a/drivers/iio/imu/bno055/bno055_i2c.c b/drivers/iio/imu/bno055/bno055_i2c.c
new file mode 100644
index 000000000000..c1bbc0fe34f9
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055_i2c.c
@@ -0,0 +1,57 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Support for I2C-interfaced Bosch BNO055 IMU.
+ *
+ * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia
+ * Electronic Design Laboratory
+ * Written by Andrea Merello <andrea.merello@iit.it>
+ */
+
+#include <linux/i2c.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+
+#include "bno055.h"
+
+#define BNO055_I2C_XFER_BURST_BREAK_THRESHOLD 3
+
+static int bno055_i2c_probe(struct i2c_client *client)
+{
+	struct regmap *regmap;
+
+	regmap = devm_regmap_init_i2c(client, &bno055_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(&client->dev, PTR_ERR(regmap),
+				     "Unable to init register map");
+
+	return bno055_probe(&client->dev, regmap,
+			    BNO055_I2C_XFER_BURST_BREAK_THRESHOLD, true);
+}
+
+static const struct i2c_device_id bno055_i2c_id[] = {
+	{"bno055", 0},
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, bno055_i2c_id);
+
+static const struct of_device_id __maybe_unused bno055_i2c_of_match[] = {
+	{ .compatible = "bosch,bno055" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, bno055_i2c_of_match);
+
+static struct i2c_driver bno055_driver = {
+	.driver = {
+		.name = "bno055-i2c",
+		.of_match_table = bno055_i2c_of_match,
+	},
+	.probe_new = bno055_i2c_probe,
+	.id_table = bno055_i2c_id,
+};
+module_i2c_driver(bno055_driver);
+
+MODULE_AUTHOR("Andrea Merello");
+MODULE_DESCRIPTION("Bosch BNO055 I2C interface");
+MODULE_IMPORT_NS(IIO_BNO055);
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/bno055/bno055_ser_core.c b/drivers/iio/imu/bno055/bno055_ser_core.c
new file mode 100644
index 000000000000..57728a568471
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055_ser_core.c
@@ -0,0 +1,560 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Serial line interface for Bosh BNO055 IMU (via serdev).
+ * This file implements serial communication up to the register read/write
+ * level.
+ *
+ * Copyright (C) 2021-2022 Istituto Italiano di Tecnologia
+ * Electronic Design Laboratory
+ * Written by Andrea Merello <andrea.merello@iit.it>
+ *
+ * This driver is based on
+ *	Plantower PMS7003 particulate matter sensor driver
+ *	Which is
+ *	Copyright (c) Tomasz Duszynski <tduszyns@gmail.com>
+ */
+
+#include <linux/completion.h>
+#include <linux/device.h>
+#include <linux/errno.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/regmap.h>
+#include <linux/serdev.h>
+
+#include "bno055_ser_trace.h"
+#include "bno055.h"
+
+/*
+ * Register writes cmd have the following format
+ * +------+------+-----+-----+----- ... ----+
+ * | 0xAA | 0xOO | REG | LEN | payload[LEN] |
+ * +------+------+-----+-----+----- ... ----+
+ *
+ * Register write responses have the following format
+ * +------+----------+
+ * | 0xEE | ERROCODE |
+ * +------+----------+
+ *
+ * .. except when writing the SYS_RST bit (i.e. triggering a system reset); in
+ * case the IMU accepts the command, then it resets without responding. We don't
+ * handle this (yet) here (so we inform the common bno055 code not to perform
+ * sw resets - bno055 on serial bus basically requires the hw reset pin).
+ *
+ * Register read have the following format
+ * +------+------+-----+-----+
+ * | 0xAA | 0xO1 | REG | LEN |
+ * +------+------+-----+-----+
+ *
+ * Successful register read response have the following format
+ * +------+-----+----- ... ----+
+ * | 0xBB | LEN | payload[LEN] |
+ * +------+-----+----- ... ----+
+ *
+ * Failed register read response have the following format
+ * +------+--------+
+ * | 0xEE | ERRCODE|  (ERRCODE always > 1)
+ * +------+--------+
+ *
+ * Error codes are
+ * 01: OK
+ * 02: read/write FAIL
+ * 04: invalid address
+ * 05: write on RO
+ * 06: wrong start byte
+ * 07: bus overrun
+ * 08: len too high
+ * 09: len too low
+ * 10: bus RX byte timeout (timeout is 30mS)
+ *
+ *
+ * **WORKAROUND ALERT**
+ *
+ * Serial communication seems very fragile: the BNO055 buffer seems to overflow
+ * very easy; BNO055 seems able to sink few bytes, then it needs a brief pause.
+ * On the other hand, it is also picky on timeout: if there is a pause > 30mS in
+ * between two bytes then the transaction fails (IMU internal RX FSM resets).
+ *
+ * BNO055 has been seen also failing to process commands in case we send them
+ * too close each other (or if it is somehow busy?)
+ *
+ * In particular I saw these scenarios:
+ * 1) If we send 2 bytes per time, then the IMU never(?) overflows.
+ * 2) If we send 4 bytes per time (i.e. the full header), then the IMU could
+ *    overflow, but it seem to sink all 4 bytes, then it returns error.
+ * 3) If we send more than 4 bytes, the IMU could overflow, and I saw it sending
+ *    error after 4 bytes are sent; we have troubles in synchronizing again,
+ *    because we are still sending data, and the IMU interprets it as the 1st
+ *    byte of a new command.
+ *
+ * While we must avoid case 3, we could send 4 bytes per time and eventually
+ * retry in case of failure; this seemed convenient for reads (which requires
+ * TXing exactly 4 bytes), however it has been seen that, depending by the IMU
+ * settings (e.g. LPF), failures became less or more frequent; in certain IMU
+ * configurations they are very rare, but in certain others we keeps failing
+ * even after like 30 retries.
+ *
+ * So, we just split TXes in [2-bytes + delay] steps, and still keep an eye on
+ * the IMU response; in case it overflows (which is now unlikely), we retry.
+ */
+
+/*
+ * Read operation overhead:
+ *  4 bytes req + 2byte resp hdr.
+ *  6 bytes = 60 bit (considering 1start + 1stop bits).
+ *  60/115200 = ~520uS + about 2500mS delay -> ~3mS
+ * In 3mS we could read back about 34 bytes that means 17 samples, this means
+ * that in case of scattered reads in which the gap is 17 samples or less it is
+ * still convenient to go for a burst.
+ * We have to take into account also IMU response time - IMU seems to be often
+ * reasonably quick to respond, but sometimes it seems to be in some "critical
+ * section" in which it delays handling of serial protocol. Because of this we
+ * round-up to 22, which is the max number of samples, always bursting indeed.
+ */
+#define BNO055_SER_XFER_BURST_BREAK_THRESHOLD 22
+
+struct bno055_ser_priv {
+	enum {
+		CMD_NONE,
+		CMD_READ,
+		CMD_WRITE,
+	} expect_response;
+	int expected_data_len;
+	u8 *response_buf;
+
+	/**
+	 * enum cmd_status - represent the status of a command sent to the HW.
+	 * @STATUS_CRIT: The command failed: the serial communication failed.
+	 * @STATUS_OK:   The command executed successfully.
+	 * @STATUS_FAIL: The command failed: HW responded with an error.
+	 */
+	enum {
+		STATUS_CRIT = -1,
+		STATUS_OK = 0,
+		STATUS_FAIL = 1,
+	} cmd_status;
+
+	/*
+	 * Protects all the above fields, which are accessed in behalf of both
+	 * the serdev RX callback and the regmap side
+	 */
+	struct mutex lock;
+
+	/* Only accessed in serdev RX callback context*/
+	struct {
+		enum {
+			RX_IDLE,
+			RX_START,
+			RX_DATA,
+		} state;
+		int databuf_count;
+		int expected_len;
+		int type;
+	} rx;
+
+	/* Never accessed in behalf of serdev RX callback context */
+	bool cmd_stale;
+
+	struct completion cmd_complete;
+	struct serdev_device *serdev;
+};
+
+static int bno055_ser_send_chunk(struct bno055_ser_priv *priv, const u8 *data, int len)
+{
+	int ret;
+
+	trace_send_chunk(len, data);
+	ret = serdev_device_write(priv->serdev, data, len, msecs_to_jiffies(25));
+	if (ret < 0)
+		return ret;
+
+	if (ret < len)
+		return -EIO;
+
+	return 0;
+}
+
+/*
+ * Send a read or write command.
+ * 'data' can be NULL (used in read case). 'len' parameter is always valid; in
+ * case 'data' is non-NULL then it must match 'data' size.
+ */
+static int bno055_ser_do_send_cmd(struct bno055_ser_priv *priv,
+				  bool read, int addr, int len, const u8 *data)
+{
+	u8 hdr[] = {0xAA, read, addr, len};
+	int chunk_len;
+	int ret;
+
+	ret = bno055_ser_send_chunk(priv, hdr, 2);
+	if (ret)
+		goto fail;
+	usleep_range(2000, 3000);
+	ret = bno055_ser_send_chunk(priv, hdr + 2, 2);
+	if (ret)
+		goto fail;
+
+	if (read)
+		return 0;
+
+	while (len) {
+		chunk_len = min(len, 2);
+		usleep_range(2000, 3000);
+		ret = bno055_ser_send_chunk(priv, data, chunk_len);
+		if (ret)
+			goto fail;
+		data += chunk_len;
+		len -= chunk_len;
+	}
+
+	return 0;
+fail:
+	/* waiting more than 30mS should clear the BNO055 internal state */
+	usleep_range(40000, 50000);
+	return ret;
+}
+
+static int bno055_ser_send_cmd(struct bno055_ser_priv *priv,
+			       bool read, int addr, int len, const u8 *data)
+{
+	const int retry_max = 5;
+	int retry = retry_max;
+	int ret = 0;
+
+	/*
+	 * In case previous command was interrupted we still need to wait it to
+	 * complete before we can issue new commands
+	 */
+	if (priv->cmd_stale) {
+		ret = wait_for_completion_interruptible_timeout(&priv->cmd_complete,
+								msecs_to_jiffies(100));
+		if (ret == -ERESTARTSYS)
+			return -ERESTARTSYS;
+
+		priv->cmd_stale = false;
+		/* if serial protocol broke, bail out */
+		if (priv->cmd_status == STATUS_CRIT)
+			return -EIO;
+	}
+
+	/*
+	 * Try to convince the IMU to cooperate.. as explained in the comments
+	 * at the top of this file, the IMU could also refuse the command (i.e.
+	 * it is not ready yet); retry in this case.
+	 */
+	do {
+		mutex_lock(&priv->lock);
+		priv->expect_response = read ? CMD_READ : CMD_WRITE;
+		reinit_completion(&priv->cmd_complete);
+		mutex_unlock(&priv->lock);
+
+		if (retry != retry_max)
+			trace_cmd_retry(read, addr, retry_max - retry);
+		ret = bno055_ser_do_send_cmd(priv, read, addr, len, data);
+		if (ret)
+			continue;
+
+		ret = wait_for_completion_interruptible_timeout(&priv->cmd_complete,
+								msecs_to_jiffies(100));
+		if (ret == -ERESTARTSYS) {
+			priv->cmd_stale = true;
+			return -ERESTARTSYS;
+		}
+
+		if (!ret)
+			return -ETIMEDOUT;
+
+		if (priv->cmd_status == STATUS_OK)
+			return 0;
+		if (priv->cmd_status == STATUS_CRIT)
+			return -EIO;
+
+		/* loop in case priv->cmd_status == STATUS_FAIL */
+	} while (--retry);
+
+	if (ret < 0)
+		return ret;
+	if (priv->cmd_status == STATUS_FAIL)
+		return -EINVAL;
+	return 0;
+}
+
+static int bno055_ser_write_reg(void *context, const void *_data, size_t count)
+{
+	const u8 *data = _data;
+	struct bno055_ser_priv *priv = context;
+
+	if (count < 2) {
+		dev_err(&priv->serdev->dev, "Invalid write count %zu", count);
+		return -EINVAL;
+	}
+
+	trace_write_reg(data[0], data[1]);
+	return bno055_ser_send_cmd(priv, 0, data[0], count - 1, data + 1);
+}
+
+static int bno055_ser_read_reg(void *context,
+			       const void *_reg, size_t reg_size,
+			       void *val, size_t val_size)
+{
+	int ret;
+	int reg_addr;
+	const u8 *reg = _reg;
+	struct bno055_ser_priv *priv = context;
+
+	if (val_size > 128) {
+		dev_err(&priv->serdev->dev, "Invalid read valsize %zu", val_size);
+		return -EINVAL;
+	}
+
+	reg_addr = *reg;
+	trace_read_reg(reg_addr, val_size);
+	mutex_lock(&priv->lock);
+	priv->expected_data_len = val_size;
+	priv->response_buf = val;
+	mutex_unlock(&priv->lock);
+
+	ret = bno055_ser_send_cmd(priv, 1, reg_addr, val_size, NULL);
+
+	mutex_lock(&priv->lock);
+	priv->response_buf = NULL;
+	mutex_unlock(&priv->lock);
+
+	return ret;
+}
+
+/*
+ * Handler for received data; this is called from the receiver callback whenever
+ * it got some packet from the serial bus. The status tells us whether the
+ * packet is valid (i.e. header ok && received payload len consistent wrt the
+ * header). It's now our responsibility to check whether this is what we
+ * expected, of whether we got some unexpected, yet valid, packet.
+ */
+static void bno055_ser_handle_rx(struct bno055_ser_priv *priv, int status)
+{
+	mutex_lock(&priv->lock);
+	switch (priv->expect_response) {
+	case CMD_NONE:
+		dev_warn(&priv->serdev->dev, "received unexpected, yet valid, data from sensor");
+		mutex_unlock(&priv->lock);
+		return;
+
+	case CMD_READ:
+		priv->cmd_status = status;
+		if (status == STATUS_OK &&
+		    priv->rx.databuf_count != priv->expected_data_len) {
+			/*
+			 * If we got here, then the lower layer serial protocol
+			 * seems consistent with itself; if we got an unexpected
+			 * amount of data then signal it as a non critical error
+			 */
+			priv->cmd_status = STATUS_FAIL;
+			dev_warn(&priv->serdev->dev,
+				 "received an unexpected amount of, yet valid, data from sensor");
+		}
+		break;
+
+	case CMD_WRITE:
+		priv->cmd_status = status;
+		break;
+	}
+
+	priv->expect_response = CMD_NONE;
+	mutex_unlock(&priv->lock);
+	complete(&priv->cmd_complete);
+}
+
+/*
+ * Serdev receiver FSM. This tracks the serial communication and parse the
+ * header. It pushes packets to bno055_ser_handle_rx(), eventually communicating
+ * failures (i.e. malformed packets).
+ * Ideally it doesn't know anything about upper layer (i.e. if this is the
+ * packet we were really expecting), but since we copies the payload into the
+ * receiver buffer (that is not valid when i.e. we don't expect data), we
+ * snoop a bit in the upper layer..
+ * Also, we assume to RX one pkt per time (i.e. the HW doesn't send anything
+ * unless we require to AND we don't queue more than one request per time).
+ */
+static int bno055_ser_receive_buf(struct serdev_device *serdev,
+				  const unsigned char *buf, size_t size)
+{
+	int status;
+	struct bno055_ser_priv *priv = serdev_device_get_drvdata(serdev);
+	int remaining = size;
+
+	if (size == 0)
+		return 0;
+
+	trace_recv(size, buf);
+	switch (priv->rx.state) {
+	case RX_IDLE:
+		/*
+		 * New packet.
+		 * Check for its 1st byte that identifies the pkt type.
+		 */
+		if (buf[0] != 0xEE && buf[0] != 0xBB) {
+			dev_err(&priv->serdev->dev,
+				"Invalid packet start %x", buf[0]);
+			bno055_ser_handle_rx(priv, STATUS_CRIT);
+			break;
+		}
+		priv->rx.type = buf[0];
+		priv->rx.state = RX_START;
+		remaining--;
+		buf++;
+		priv->rx.databuf_count = 0;
+		fallthrough;
+
+	case RX_START:
+		/*
+		 * Packet RX in progress, we expect either 1-byte len or 1-byte
+		 * status depending by the packet type.
+		 */
+		if (remaining == 0)
+			break;
+
+		if (priv->rx.type == 0xEE) {
+			if (remaining > 1) {
+				dev_err(&priv->serdev->dev, "EE pkt. Extra data received");
+				status = STATUS_CRIT;
+			} else {
+				status = (buf[0] == 1) ? STATUS_OK : STATUS_FAIL;
+			}
+			bno055_ser_handle_rx(priv, status);
+			priv->rx.state = RX_IDLE;
+			break;
+
+		} else {
+			/*priv->rx.type == 0xBB */
+			priv->rx.state = RX_DATA;
+			priv->rx.expected_len = buf[0];
+			remaining--;
+			buf++;
+		}
+		fallthrough;
+
+	case RX_DATA:
+		/* Header parsed; now receiving packet data payload */
+		if (remaining == 0)
+			break;
+
+		if (priv->rx.databuf_count + remaining > priv->rx.expected_len) {
+			/*
+			 * This is an inconsistency in serial protocol, we lost
+			 * sync and we don't know how to handle further data
+			 */
+			dev_err(&priv->serdev->dev, "BB pkt. Extra data received");
+			bno055_ser_handle_rx(priv, STATUS_CRIT);
+			priv->rx.state = RX_IDLE;
+			break;
+		}
+
+		mutex_lock(&priv->lock);
+		/*
+		 * NULL e.g. when read cmd is stale or when no read cmd is
+		 * actually pending.
+		 */
+		if (priv->response_buf &&
+		    /*
+		     * Snoop on the upper layer protocol stuff to make sure not
+		     * to write to an invalid memory. Apart for this, let's the
+		     * upper layer manage any inconsistency wrt expected data
+		     * len (as long as the serial protocol is consistent wrt
+		     * itself (i.e. response header is consistent with received
+		     * response len.
+		     */
+		    (priv->rx.databuf_count + remaining <= priv->expected_data_len))
+			memcpy(priv->response_buf + priv->rx.databuf_count,
+			       buf, remaining);
+		mutex_unlock(&priv->lock);
+
+		priv->rx.databuf_count += remaining;
+
+		/*
+		 * Reached expected len advertised by the IMU for the current
+		 * packet. Pass it to the upper layer (for us it is just valid).
+		 */
+		if (priv->rx.databuf_count == priv->rx.expected_len) {
+			bno055_ser_handle_rx(priv, STATUS_OK);
+			priv->rx.state = RX_IDLE;
+		}
+		break;
+	}
+
+	return size;
+}
+
+static const struct serdev_device_ops bno055_ser_serdev_ops = {
+	.receive_buf = bno055_ser_receive_buf,
+	.write_wakeup = serdev_device_write_wakeup,
+};
+
+static struct regmap_bus bno055_ser_regmap_bus = {
+	.write = bno055_ser_write_reg,
+	.read = bno055_ser_read_reg,
+};
+
+static int bno055_ser_probe(struct serdev_device *serdev)
+{
+	struct bno055_ser_priv *priv;
+	struct regmap *regmap;
+	int ret;
+
+	priv = devm_kzalloc(&serdev->dev, sizeof(*priv), GFP_KERNEL);
+	if (!priv)
+		return -ENOMEM;
+
+	serdev_device_set_drvdata(serdev, priv);
+	priv->serdev = serdev;
+	mutex_init(&priv->lock);
+	init_completion(&priv->cmd_complete);
+
+	serdev_device_set_client_ops(serdev, &bno055_ser_serdev_ops);
+	ret = devm_serdev_device_open(&serdev->dev, serdev);
+	if (ret)
+		return ret;
+
+	if (serdev_device_set_baudrate(serdev, 115200) != 115200) {
+		dev_err(&serdev->dev, "Cannot set required baud rate");
+		return -EIO;
+	}
+
+	ret = serdev_device_set_parity(serdev, SERDEV_PARITY_NONE);
+	if (ret) {
+		dev_err(&serdev->dev, "Cannot set required parity setting");
+		return ret;
+	}
+	serdev_device_set_flow_control(serdev, false);
+
+	regmap = devm_regmap_init(&serdev->dev, &bno055_ser_regmap_bus,
+				  priv, &bno055_regmap_config);
+	if (IS_ERR(regmap))
+		return dev_err_probe(&serdev->dev, PTR_ERR(regmap),
+				     "Unable to init register map");
+
+	return bno055_probe(&serdev->dev, regmap,
+			    BNO055_SER_XFER_BURST_BREAK_THRESHOLD, false);
+}
+
+static const struct of_device_id bno055_ser_of_match[] = {
+	{ .compatible = "bosch,bno055" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, bno055_ser_of_match);
+
+static struct serdev_device_driver bno055_ser_driver = {
+	.driver = {
+		.name = "bno055-ser",
+		.of_match_table = bno055_ser_of_match,
+	},
+	.probe = bno055_ser_probe,
+};
+module_serdev_device_driver(bno055_ser_driver);
+
+MODULE_AUTHOR("Andrea Merello <andrea.merello@iit.it>");
+MODULE_DESCRIPTION("Bosch BNO055 serdev interface");
+MODULE_IMPORT_NS(IIO_BNO055);
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/bno055/bno055_ser_trace.c b/drivers/iio/imu/bno055/bno055_ser_trace.c
new file mode 100644
index 000000000000..48397b66daef
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055_ser_trace.c
@@ -0,0 +1,14 @@
+//SPDX-License-Identifier: GPL-2.0
+
+/*
+ * bno055_ser Trace Support
+ * Copyright (C) 2022 Istituto Italiano di Tecnologia
+ * Electronic Design Laboratory
+ *
+ * Based on:
+ *   Device core Trace Support
+ *   Copyright (C) 2021, Intel Corporation
+ */
+
+#define CREATE_TRACE_POINTS
+#include "bno055_ser_trace.h"
diff --git a/drivers/iio/imu/bno055/bno055_ser_trace.h b/drivers/iio/imu/bno055/bno055_ser_trace.h
new file mode 100644
index 000000000000..7d9eae166eec
--- /dev/null
+++ b/drivers/iio/imu/bno055/bno055_ser_trace.h
@@ -0,0 +1,104 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#if !defined(__BNO055_SERDEV_TRACE_H__) || defined(TRACE_HEADER_MULTI_READ)
+#define __BNO055_SERDEV_TRACE_H__
+
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM bno055_ser
+
+TRACE_EVENT(send_chunk,
+	    TP_PROTO(int len, const u8 *data),
+	    TP_ARGS(len, data),
+	    TP_STRUCT__entry(
+		    __field(int, len)
+		    __dynamic_array(u8, chunk, len)
+	    ),
+	    TP_fast_assign(
+		    __entry->len = len;
+		    memcpy(__get_dynamic_array(chunk),
+			   data, __entry->len);
+	    ),
+	    TP_printk("len: %d, data: = %*ph",
+		      __entry->len, __entry->len, __get_dynamic_array(chunk)
+	    )
+);
+
+TRACE_EVENT(cmd_retry,
+	    TP_PROTO(bool read, int addr, int retry),
+	    TP_ARGS(read, addr, retry),
+	    TP_STRUCT__entry(
+		    __field(bool, read)
+		    __field(int, addr)
+		    __field(int, retry)
+	    ),
+	    TP_fast_assign(
+		    __entry->read = read;
+		    __entry->addr = addr;
+		    __entry->retry = retry;
+	    ),
+	    TP_printk("%s addr 0x%x retry #%d",
+		      __entry->read ? "read" : "write",
+		      __entry->addr, __entry->retry
+	    )
+);
+
+TRACE_EVENT(write_reg,
+	    TP_PROTO(u8 addr, u8 value),
+	    TP_ARGS(addr, value),
+	    TP_STRUCT__entry(
+		    __field(u8, addr)
+		    __field(u8, value)
+	    ),
+	    TP_fast_assign(
+		    __entry->addr = addr;
+		    __entry->value = value;
+	    ),
+	    TP_printk("reg 0x%x = 0x%x",
+		      __entry->addr, __entry->value
+	    )
+);
+
+TRACE_EVENT(read_reg,
+	    TP_PROTO(int addr, size_t len),
+	    TP_ARGS(addr, len),
+	    TP_STRUCT__entry(
+		    __field(int, addr)
+		    __field(size_t, len)
+	    ),
+	    TP_fast_assign(
+		    __entry->addr = addr;
+		    __entry->len = len;
+	    ),
+	    TP_printk("reg 0x%x (len %zu)",
+		      __entry->addr, __entry->len
+	    )
+);
+
+TRACE_EVENT(recv,
+	    TP_PROTO(size_t len, const unsigned char *buf),
+	    TP_ARGS(len, buf),
+	    TP_STRUCT__entry(
+		    __field(size_t, len)
+		    __dynamic_array(unsigned char, buf, len)
+	    ),
+	    TP_fast_assign(
+		    __entry->len = len;
+		    memcpy(__get_dynamic_array(buf),
+			   buf, __entry->len);
+	    ),
+	    TP_printk("len: %zu, data: = %*ph",
+		      __entry->len, (int)__entry->len, __get_dynamic_array(buf)
+	    )
+);
+
+#endif /* __BNO055_SERDEV_TRACE_H__ || TRACE_HEADER_MULTI_READ */
+
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#undef TRACE_INCLUDE_FILE
+#define TRACE_INCLUDE_FILE bno055_ser_trace
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
diff --git a/drivers/iio/imu/fxos8700_core.c b/drivers/iio/imu/fxos8700_core.c
index 7b47be44ea59..423cfe526f2a 100644
--- a/drivers/iio/imu/fxos8700_core.c
+++ b/drivers/iio/imu/fxos8700_core.c
@@ -167,7 +167,7 @@
 struct fxos8700_data {
 	struct regmap *regmap;
 	struct iio_trigger *trig;
-	__be16 buf[FXOS8700_DATA_BUF_SIZE] ____cacheline_aligned;
+	__be16 buf[FXOS8700_DATA_BUF_SIZE] __aligned(IIO_DMA_MINALIGN);
 };
 
 /* Regmap info */
@@ -633,7 +633,6 @@ int fxos8700_core_probe(struct device *dev, struct regmap *regmap,
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = fxos8700_channels;
 	indio_dev->num_channels = ARRAY_SIZE(fxos8700_channels);
 	indio_dev->name = name ? name : "fxos8700";
diff --git a/drivers/iio/imu/fxos8700_i2c.c b/drivers/iio/imu/fxos8700_i2c.c
index 3ceb76366313..40a570325b0a 100644
--- a/drivers/iio/imu/fxos8700_i2c.c
+++ b/drivers/iio/imu/fxos8700_i2c.c
@@ -26,8 +26,7 @@ static int fxos8700_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &fxos8700_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
diff --git a/drivers/iio/imu/fxos8700_spi.c b/drivers/iio/imu/fxos8700_spi.c
index 57e7bb6444e7..27e694cce173 100644
--- a/drivers/iio/imu/fxos8700_spi.c
+++ b/drivers/iio/imu/fxos8700_spi.c
@@ -17,8 +17,7 @@ static int fxos8700_spi_probe(struct spi_device *spi)
 
 	regmap = devm_regmap_init_spi(spi, &fxos8700_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
diff --git a/drivers/iio/imu/inv_icm42600/Kconfig b/drivers/iio/imu/inv_icm42600/Kconfig
new file mode 100644
index 000000000000..50cbcfcb6cf1
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/Kconfig
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+config INV_ICM42600
+	tristate
+	select IIO_BUFFER
+
+config INV_ICM42600_I2C
+	tristate "InvenSense ICM-426xx I2C driver"
+	depends on I2C
+	select INV_ICM42600
+	select REGMAP_I2C
+	help
+	  This driver supports the InvenSense ICM-426xx motion tracking
+	  devices over I2C.
+
+	  This driver can be built as a module. The module will be called
+	  inv-icm42600-i2c.
+
+config INV_ICM42600_SPI
+	tristate "InvenSense ICM-426xx SPI driver"
+	depends on SPI_MASTER
+	select INV_ICM42600
+	select REGMAP_SPI
+	help
+	  This driver supports the InvenSense ICM-426xx motion tracking
+	  devices over SPI.
+
+	  This driver can be built as a module. The module will be called
+	  inv-icm42600-spi.
diff --git a/drivers/iio/imu/inv_icm42600/Makefile b/drivers/iio/imu/inv_icm42600/Makefile
new file mode 100644
index 000000000000..291714d9aa54
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/Makefile
@@ -0,0 +1,15 @@
+# SPDX-License-Identifier: GPL-2.0-or-later
+
+obj-$(CONFIG_INV_ICM42600) += inv-icm42600.o
+inv-icm42600-y += inv_icm42600_core.o
+inv-icm42600-y += inv_icm42600_gyro.o
+inv-icm42600-y += inv_icm42600_accel.o
+inv-icm42600-y += inv_icm42600_temp.o
+inv-icm42600-y += inv_icm42600_buffer.o
+inv-icm42600-y += inv_icm42600_timestamp.o
+
+obj-$(CONFIG_INV_ICM42600_I2C) += inv-icm42600-i2c.o
+inv-icm42600-i2c-y += inv_icm42600_i2c.o
+
+obj-$(CONFIG_INV_ICM42600_SPI) += inv-icm42600-spi.o
+inv-icm42600-spi-y += inv_icm42600_spi.o
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600.h b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
new file mode 100644
index 000000000000..3d91469beccb
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600.h
@@ -0,0 +1,396 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#ifndef INV_ICM42600_H_
+#define INV_ICM42600_H_
+
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/regmap.h>
+#include <linux/mutex.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pm.h>
+#include <linux/iio/iio.h>
+
+#include "inv_icm42600_buffer.h"
+
+enum inv_icm42600_chip {
+	INV_CHIP_INVALID,
+	INV_CHIP_ICM42600,
+	INV_CHIP_ICM42602,
+	INV_CHIP_ICM42605,
+	INV_CHIP_ICM42622,
+	INV_CHIP_NB,
+};
+
+/* serial bus slew rates */
+enum inv_icm42600_slew_rate {
+	INV_ICM42600_SLEW_RATE_20_60NS,
+	INV_ICM42600_SLEW_RATE_12_36NS,
+	INV_ICM42600_SLEW_RATE_6_18NS,
+	INV_ICM42600_SLEW_RATE_4_12NS,
+	INV_ICM42600_SLEW_RATE_2_6NS,
+	INV_ICM42600_SLEW_RATE_INF_2NS,
+};
+
+enum inv_icm42600_sensor_mode {
+	INV_ICM42600_SENSOR_MODE_OFF,
+	INV_ICM42600_SENSOR_MODE_STANDBY,
+	INV_ICM42600_SENSOR_MODE_LOW_POWER,
+	INV_ICM42600_SENSOR_MODE_LOW_NOISE,
+	INV_ICM42600_SENSOR_MODE_NB,
+};
+
+/* gyroscope fullscale values */
+enum inv_icm42600_gyro_fs {
+	INV_ICM42600_GYRO_FS_2000DPS,
+	INV_ICM42600_GYRO_FS_1000DPS,
+	INV_ICM42600_GYRO_FS_500DPS,
+	INV_ICM42600_GYRO_FS_250DPS,
+	INV_ICM42600_GYRO_FS_125DPS,
+	INV_ICM42600_GYRO_FS_62_5DPS,
+	INV_ICM42600_GYRO_FS_31_25DPS,
+	INV_ICM42600_GYRO_FS_15_625DPS,
+	INV_ICM42600_GYRO_FS_NB,
+};
+
+/* accelerometer fullscale values */
+enum inv_icm42600_accel_fs {
+	INV_ICM42600_ACCEL_FS_16G,
+	INV_ICM42600_ACCEL_FS_8G,
+	INV_ICM42600_ACCEL_FS_4G,
+	INV_ICM42600_ACCEL_FS_2G,
+	INV_ICM42600_ACCEL_FS_NB,
+};
+
+/* ODR suffixed by LN or LP are Low-Noise or Low-Power mode only */
+enum inv_icm42600_odr {
+	INV_ICM42600_ODR_8KHZ_LN = 3,
+	INV_ICM42600_ODR_4KHZ_LN,
+	INV_ICM42600_ODR_2KHZ_LN,
+	INV_ICM42600_ODR_1KHZ_LN,
+	INV_ICM42600_ODR_200HZ,
+	INV_ICM42600_ODR_100HZ,
+	INV_ICM42600_ODR_50HZ,
+	INV_ICM42600_ODR_25HZ,
+	INV_ICM42600_ODR_12_5HZ,
+	INV_ICM42600_ODR_6_25HZ_LP,
+	INV_ICM42600_ODR_3_125HZ_LP,
+	INV_ICM42600_ODR_1_5625HZ_LP,
+	INV_ICM42600_ODR_500HZ,
+	INV_ICM42600_ODR_NB,
+};
+
+enum inv_icm42600_filter {
+	/* Low-Noise mode sensor data filter (3rd order filter by default) */
+	INV_ICM42600_FILTER_BW_ODR_DIV_2,
+
+	/* Low-Power mode sensor data filter (averaging) */
+	INV_ICM42600_FILTER_AVG_1X = 1,
+	INV_ICM42600_FILTER_AVG_16X = 6,
+};
+
+struct inv_icm42600_sensor_conf {
+	int mode;
+	int fs;
+	int odr;
+	int filter;
+};
+#define INV_ICM42600_SENSOR_CONF_INIT		{-1, -1, -1, -1}
+
+struct inv_icm42600_conf {
+	struct inv_icm42600_sensor_conf gyro;
+	struct inv_icm42600_sensor_conf accel;
+	bool temp_en;
+};
+
+struct inv_icm42600_suspended {
+	enum inv_icm42600_sensor_mode gyro;
+	enum inv_icm42600_sensor_mode accel;
+	bool temp;
+};
+
+/**
+ *  struct inv_icm42600_state - driver state variables
+ *  @lock:		lock for serializing multiple registers access.
+ *  @chip:		chip identifier.
+ *  @name:		chip name.
+ *  @map:		regmap pointer.
+ *  @vdd_supply:	VDD voltage regulator for the chip.
+ *  @vddio_supply:	I/O voltage regulator for the chip.
+ *  @orientation:	sensor chip orientation relative to main hardware.
+ *  @conf:		chip sensors configurations.
+ *  @suspended:		suspended sensors configuration.
+ *  @indio_gyro:	gyroscope IIO device.
+ *  @indio_accel:	accelerometer IIO device.
+ *  @buffer:		data transfer buffer aligned for DMA.
+ *  @fifo:		FIFO management structure.
+ *  @timestamp:		interrupt timestamps.
+ */
+struct inv_icm42600_state {
+	struct mutex lock;
+	enum inv_icm42600_chip chip;
+	const char *name;
+	struct regmap *map;
+	struct regulator *vdd_supply;
+	struct regulator *vddio_supply;
+	struct iio_mount_matrix orientation;
+	struct inv_icm42600_conf conf;
+	struct inv_icm42600_suspended suspended;
+	struct iio_dev *indio_gyro;
+	struct iio_dev *indio_accel;
+	uint8_t buffer[2] __aligned(IIO_DMA_MINALIGN);
+	struct inv_icm42600_fifo fifo;
+	struct {
+		int64_t gyro;
+		int64_t accel;
+	} timestamp;
+};
+
+/* Virtual register addresses: @bank on MSB (4 upper bits), @address on LSB */
+
+/* Bank selection register, available in all banks */
+#define INV_ICM42600_REG_BANK_SEL			0x76
+#define INV_ICM42600_BANK_SEL_MASK			GENMASK(2, 0)
+
+/* User bank 0 (MSB 0x00) */
+#define INV_ICM42600_REG_DEVICE_CONFIG			0x0011
+#define INV_ICM42600_DEVICE_CONFIG_SOFT_RESET		BIT(0)
+
+#define INV_ICM42600_REG_DRIVE_CONFIG			0x0013
+#define INV_ICM42600_DRIVE_CONFIG_I2C_MASK		GENMASK(5, 3)
+#define INV_ICM42600_DRIVE_CONFIG_I2C(_rate)		\
+		FIELD_PREP(INV_ICM42600_DRIVE_CONFIG_I2C_MASK, (_rate))
+#define INV_ICM42600_DRIVE_CONFIG_SPI_MASK		GENMASK(2, 0)
+#define INV_ICM42600_DRIVE_CONFIG_SPI(_rate)		\
+		FIELD_PREP(INV_ICM42600_DRIVE_CONFIG_SPI_MASK, (_rate))
+
+#define INV_ICM42600_REG_INT_CONFIG			0x0014
+#define INV_ICM42600_INT_CONFIG_INT2_LATCHED		BIT(5)
+#define INV_ICM42600_INT_CONFIG_INT2_PUSH_PULL		BIT(4)
+#define INV_ICM42600_INT_CONFIG_INT2_ACTIVE_HIGH	BIT(3)
+#define INV_ICM42600_INT_CONFIG_INT2_ACTIVE_LOW		0x00
+#define INV_ICM42600_INT_CONFIG_INT1_LATCHED		BIT(2)
+#define INV_ICM42600_INT_CONFIG_INT1_PUSH_PULL		BIT(1)
+#define INV_ICM42600_INT_CONFIG_INT1_ACTIVE_HIGH	BIT(0)
+#define INV_ICM42600_INT_CONFIG_INT1_ACTIVE_LOW		0x00
+
+#define INV_ICM42600_REG_FIFO_CONFIG			0x0016
+#define INV_ICM42600_FIFO_CONFIG_MASK			GENMASK(7, 6)
+#define INV_ICM42600_FIFO_CONFIG_BYPASS			\
+		FIELD_PREP(INV_ICM42600_FIFO_CONFIG_MASK, 0)
+#define INV_ICM42600_FIFO_CONFIG_STREAM			\
+		FIELD_PREP(INV_ICM42600_FIFO_CONFIG_MASK, 1)
+#define INV_ICM42600_FIFO_CONFIG_STOP_ON_FULL		\
+		FIELD_PREP(INV_ICM42600_FIFO_CONFIG_MASK, 2)
+
+/* all sensor data are 16 bits (2 registers wide) in big-endian */
+#define INV_ICM42600_REG_TEMP_DATA			0x001D
+#define INV_ICM42600_REG_ACCEL_DATA_X			0x001F
+#define INV_ICM42600_REG_ACCEL_DATA_Y			0x0021
+#define INV_ICM42600_REG_ACCEL_DATA_Z			0x0023
+#define INV_ICM42600_REG_GYRO_DATA_X			0x0025
+#define INV_ICM42600_REG_GYRO_DATA_Y			0x0027
+#define INV_ICM42600_REG_GYRO_DATA_Z			0x0029
+#define INV_ICM42600_DATA_INVALID			-32768
+
+#define INV_ICM42600_REG_INT_STATUS			0x002D
+#define INV_ICM42600_INT_STATUS_UI_FSYNC		BIT(6)
+#define INV_ICM42600_INT_STATUS_PLL_RDY			BIT(5)
+#define INV_ICM42600_INT_STATUS_RESET_DONE		BIT(4)
+#define INV_ICM42600_INT_STATUS_DATA_RDY		BIT(3)
+#define INV_ICM42600_INT_STATUS_FIFO_THS		BIT(2)
+#define INV_ICM42600_INT_STATUS_FIFO_FULL		BIT(1)
+#define INV_ICM42600_INT_STATUS_AGC_RDY			BIT(0)
+
+/*
+ * FIFO access registers
+ * FIFO count is 16 bits (2 registers) big-endian
+ * FIFO data is a continuous read register to read FIFO content
+ */
+#define INV_ICM42600_REG_FIFO_COUNT			0x002E
+#define INV_ICM42600_REG_FIFO_DATA			0x0030
+
+#define INV_ICM42600_REG_SIGNAL_PATH_RESET		0x004B
+#define INV_ICM42600_SIGNAL_PATH_RESET_DMP_INIT_EN	BIT(6)
+#define INV_ICM42600_SIGNAL_PATH_RESET_DMP_MEM_RESET	BIT(5)
+#define INV_ICM42600_SIGNAL_PATH_RESET_RESET		BIT(3)
+#define INV_ICM42600_SIGNAL_PATH_RESET_TMST_STROBE	BIT(2)
+#define INV_ICM42600_SIGNAL_PATH_RESET_FIFO_FLUSH	BIT(1)
+
+/* default configuration: all data big-endian and fifo count in bytes */
+#define INV_ICM42600_REG_INTF_CONFIG0			0x004C
+#define INV_ICM42600_INTF_CONFIG0_FIFO_HOLD_LAST_DATA	BIT(7)
+#define INV_ICM42600_INTF_CONFIG0_FIFO_COUNT_REC	BIT(6)
+#define INV_ICM42600_INTF_CONFIG0_FIFO_COUNT_ENDIAN	BIT(5)
+#define INV_ICM42600_INTF_CONFIG0_SENSOR_DATA_ENDIAN	BIT(4)
+#define INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK	GENMASK(1, 0)
+#define INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_SPI_DIS	\
+		FIELD_PREP(INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK, 2)
+#define INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_I2C_DIS	\
+		FIELD_PREP(INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK, 3)
+
+#define INV_ICM42600_REG_INTF_CONFIG1			0x004D
+#define INV_ICM42600_INTF_CONFIG1_ACCEL_LP_CLK_RC	BIT(3)
+
+#define INV_ICM42600_REG_PWR_MGMT0			0x004E
+#define INV_ICM42600_PWR_MGMT0_TEMP_DIS			BIT(5)
+#define INV_ICM42600_PWR_MGMT0_IDLE			BIT(4)
+#define INV_ICM42600_PWR_MGMT0_GYRO(_mode)		\
+		FIELD_PREP(GENMASK(3, 2), (_mode))
+#define INV_ICM42600_PWR_MGMT0_ACCEL(_mode)		\
+		FIELD_PREP(GENMASK(1, 0), (_mode))
+
+#define INV_ICM42600_REG_GYRO_CONFIG0			0x004F
+#define INV_ICM42600_GYRO_CONFIG0_FS(_fs)		\
+		FIELD_PREP(GENMASK(7, 5), (_fs))
+#define INV_ICM42600_GYRO_CONFIG0_ODR(_odr)		\
+		FIELD_PREP(GENMASK(3, 0), (_odr))
+
+#define INV_ICM42600_REG_ACCEL_CONFIG0			0x0050
+#define INV_ICM42600_ACCEL_CONFIG0_FS(_fs)		\
+		FIELD_PREP(GENMASK(7, 5), (_fs))
+#define INV_ICM42600_ACCEL_CONFIG0_ODR(_odr)		\
+		FIELD_PREP(GENMASK(3, 0), (_odr))
+
+#define INV_ICM42600_REG_GYRO_ACCEL_CONFIG0		0x0052
+#define INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(_f)	\
+		FIELD_PREP(GENMASK(7, 4), (_f))
+#define INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(_f)	\
+		FIELD_PREP(GENMASK(3, 0), (_f))
+
+#define INV_ICM42600_REG_TMST_CONFIG			0x0054
+#define INV_ICM42600_TMST_CONFIG_MASK			GENMASK(4, 0)
+#define INV_ICM42600_TMST_CONFIG_TMST_TO_REGS_EN	BIT(4)
+#define INV_ICM42600_TMST_CONFIG_TMST_RES_16US		BIT(3)
+#define INV_ICM42600_TMST_CONFIG_TMST_DELTA_EN		BIT(2)
+#define INV_ICM42600_TMST_CONFIG_TMST_FSYNC_EN		BIT(1)
+#define INV_ICM42600_TMST_CONFIG_TMST_EN		BIT(0)
+
+#define INV_ICM42600_REG_FIFO_CONFIG1			0x005F
+#define INV_ICM42600_FIFO_CONFIG1_RESUME_PARTIAL_RD	BIT(6)
+#define INV_ICM42600_FIFO_CONFIG1_WM_GT_TH		BIT(5)
+#define INV_ICM42600_FIFO_CONFIG1_TMST_FSYNC_EN		BIT(3)
+#define INV_ICM42600_FIFO_CONFIG1_TEMP_EN		BIT(2)
+#define INV_ICM42600_FIFO_CONFIG1_GYRO_EN		BIT(1)
+#define INV_ICM42600_FIFO_CONFIG1_ACCEL_EN		BIT(0)
+
+/* FIFO watermark is 16 bits (2 registers wide) in little-endian */
+#define INV_ICM42600_REG_FIFO_WATERMARK			0x0060
+#define INV_ICM42600_FIFO_WATERMARK_VAL(_wm)		\
+		cpu_to_le16((_wm) & GENMASK(11, 0))
+/* FIFO is 2048 bytes, let 12 samples for reading latency */
+#define INV_ICM42600_FIFO_WATERMARK_MAX			(2048 - 12 * 16)
+
+#define INV_ICM42600_REG_INT_CONFIG1			0x0064
+#define INV_ICM42600_INT_CONFIG1_TPULSE_DURATION	BIT(6)
+#define INV_ICM42600_INT_CONFIG1_TDEASSERT_DISABLE	BIT(5)
+#define INV_ICM42600_INT_CONFIG1_ASYNC_RESET		BIT(4)
+
+#define INV_ICM42600_REG_INT_SOURCE0			0x0065
+#define INV_ICM42600_INT_SOURCE0_UI_FSYNC_INT1_EN	BIT(6)
+#define INV_ICM42600_INT_SOURCE0_PLL_RDY_INT1_EN	BIT(5)
+#define INV_ICM42600_INT_SOURCE0_RESET_DONE_INT1_EN	BIT(4)
+#define INV_ICM42600_INT_SOURCE0_UI_DRDY_INT1_EN	BIT(3)
+#define INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN	BIT(2)
+#define INV_ICM42600_INT_SOURCE0_FIFO_FULL_INT1_EN	BIT(1)
+#define INV_ICM42600_INT_SOURCE0_UI_AGC_RDY_INT1_EN	BIT(0)
+
+#define INV_ICM42600_REG_WHOAMI				0x0075
+#define INV_ICM42600_WHOAMI_ICM42600			0x40
+#define INV_ICM42600_WHOAMI_ICM42602			0x41
+#define INV_ICM42600_WHOAMI_ICM42605			0x42
+#define INV_ICM42600_WHOAMI_ICM42622			0x46
+
+/* User bank 1 (MSB 0x10) */
+#define INV_ICM42600_REG_SENSOR_CONFIG0			0x1003
+#define INV_ICM42600_SENSOR_CONFIG0_ZG_DISABLE		BIT(5)
+#define INV_ICM42600_SENSOR_CONFIG0_YG_DISABLE		BIT(4)
+#define INV_ICM42600_SENSOR_CONFIG0_XG_DISABLE		BIT(3)
+#define INV_ICM42600_SENSOR_CONFIG0_ZA_DISABLE		BIT(2)
+#define INV_ICM42600_SENSOR_CONFIG0_YA_DISABLE		BIT(1)
+#define INV_ICM42600_SENSOR_CONFIG0_XA_DISABLE		BIT(0)
+
+/* Timestamp value is 20 bits (3 registers) in little-endian */
+#define INV_ICM42600_REG_TMSTVAL			0x1062
+#define INV_ICM42600_TMSTVAL_MASK			GENMASK(19, 0)
+
+#define INV_ICM42600_REG_INTF_CONFIG4			0x107A
+#define INV_ICM42600_INTF_CONFIG4_I3C_BUS_ONLY		BIT(6)
+#define INV_ICM42600_INTF_CONFIG4_SPI_AP_4WIRE		BIT(1)
+
+#define INV_ICM42600_REG_INTF_CONFIG6			0x107C
+#define INV_ICM42600_INTF_CONFIG6_MASK			GENMASK(4, 0)
+#define INV_ICM42600_INTF_CONFIG6_I3C_EN		BIT(4)
+#define INV_ICM42600_INTF_CONFIG6_I3C_IBI_BYTE_EN	BIT(3)
+#define INV_ICM42600_INTF_CONFIG6_I3C_IBI_EN		BIT(2)
+#define INV_ICM42600_INTF_CONFIG6_I3C_DDR_EN		BIT(1)
+#define INV_ICM42600_INTF_CONFIG6_I3C_SDR_EN		BIT(0)
+
+/* User bank 4 (MSB 0x40) */
+#define INV_ICM42600_REG_INT_SOURCE8			0x404F
+#define INV_ICM42600_INT_SOURCE8_FSYNC_IBI_EN		BIT(5)
+#define INV_ICM42600_INT_SOURCE8_PLL_RDY_IBI_EN		BIT(4)
+#define INV_ICM42600_INT_SOURCE8_UI_DRDY_IBI_EN		BIT(3)
+#define INV_ICM42600_INT_SOURCE8_FIFO_THS_IBI_EN	BIT(2)
+#define INV_ICM42600_INT_SOURCE8_FIFO_FULL_IBI_EN	BIT(1)
+#define INV_ICM42600_INT_SOURCE8_AGC_RDY_IBI_EN		BIT(0)
+
+#define INV_ICM42600_REG_OFFSET_USER0			0x4077
+#define INV_ICM42600_REG_OFFSET_USER1			0x4078
+#define INV_ICM42600_REG_OFFSET_USER2			0x4079
+#define INV_ICM42600_REG_OFFSET_USER3			0x407A
+#define INV_ICM42600_REG_OFFSET_USER4			0x407B
+#define INV_ICM42600_REG_OFFSET_USER5			0x407C
+#define INV_ICM42600_REG_OFFSET_USER6			0x407D
+#define INV_ICM42600_REG_OFFSET_USER7			0x407E
+#define INV_ICM42600_REG_OFFSET_USER8			0x407F
+
+/* Sleep times required by the driver */
+#define INV_ICM42600_POWER_UP_TIME_MS		100
+#define INV_ICM42600_RESET_TIME_MS		1
+#define INV_ICM42600_ACCEL_STARTUP_TIME_MS	20
+#define INV_ICM42600_GYRO_STARTUP_TIME_MS	60
+#define INV_ICM42600_GYRO_STOP_TIME_MS		150
+#define INV_ICM42600_TEMP_STARTUP_TIME_MS	14
+#define INV_ICM42600_SUSPEND_DELAY_MS		2000
+
+typedef int (*inv_icm42600_bus_setup)(struct inv_icm42600_state *);
+
+extern const struct regmap_config inv_icm42600_regmap_config;
+extern const struct dev_pm_ops inv_icm42600_pm_ops;
+
+const struct iio_mount_matrix *
+inv_icm42600_get_mount_matrix(const struct iio_dev *indio_dev,
+			      const struct iio_chan_spec *chan);
+
+uint32_t inv_icm42600_odr_to_period(enum inv_icm42600_odr odr);
+
+int inv_icm42600_set_accel_conf(struct inv_icm42600_state *st,
+				struct inv_icm42600_sensor_conf *conf,
+				unsigned int *sleep_ms);
+
+int inv_icm42600_set_gyro_conf(struct inv_icm42600_state *st,
+			       struct inv_icm42600_sensor_conf *conf,
+			       unsigned int *sleep_ms);
+
+int inv_icm42600_set_temp_conf(struct inv_icm42600_state *st, bool enable,
+			       unsigned int *sleep_ms);
+
+int inv_icm42600_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg,
+			     unsigned int writeval, unsigned int *readval);
+
+int inv_icm42600_core_probe(struct regmap *regmap, int chip, int irq,
+			    inv_icm42600_bus_setup bus_setup);
+
+struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st);
+
+int inv_icm42600_gyro_parse_fifo(struct iio_dev *indio_dev);
+
+struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st);
+
+int inv_icm42600_accel_parse_fifo(struct iio_dev *indio_dev);
+
+#endif
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
new file mode 100644
index 000000000000..c3f433ad3af6
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_accel.c
@@ -0,0 +1,784 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/delay.h>
+#include <linux/math64.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/kfifo_buf.h>
+
+#include "inv_icm42600.h"
+#include "inv_icm42600_temp.h"
+#include "inv_icm42600_buffer.h"
+#include "inv_icm42600_timestamp.h"
+
+#define INV_ICM42600_ACCEL_CHAN(_modifier, _index, _ext_info)		\
+	{								\
+		.type = IIO_ACCEL,					\
+		.modified = 1,						\
+		.channel2 = _modifier,					\
+		.info_mask_separate =					\
+			BIT(IIO_CHAN_INFO_RAW) |			\
+			BIT(IIO_CHAN_INFO_CALIBBIAS),			\
+		.info_mask_shared_by_type =				\
+			BIT(IIO_CHAN_INFO_SCALE),			\
+		.info_mask_shared_by_type_available =			\
+			BIT(IIO_CHAN_INFO_SCALE) |			\
+			BIT(IIO_CHAN_INFO_CALIBBIAS),			\
+		.info_mask_shared_by_all =				\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+		.info_mask_shared_by_all_available =			\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+		.scan_index = _index,					\
+		.scan_type = {						\
+			.sign = 's',					\
+			.realbits = 16,					\
+			.storagebits = 16,				\
+			.endianness = IIO_BE,				\
+		},							\
+		.ext_info = _ext_info,					\
+	}
+
+enum inv_icm42600_accel_scan {
+	INV_ICM42600_ACCEL_SCAN_X,
+	INV_ICM42600_ACCEL_SCAN_Y,
+	INV_ICM42600_ACCEL_SCAN_Z,
+	INV_ICM42600_ACCEL_SCAN_TEMP,
+	INV_ICM42600_ACCEL_SCAN_TIMESTAMP,
+};
+
+static const struct iio_chan_spec_ext_info inv_icm42600_accel_ext_infos[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, inv_icm42600_get_mount_matrix),
+	{},
+};
+
+static const struct iio_chan_spec inv_icm42600_accel_channels[] = {
+	INV_ICM42600_ACCEL_CHAN(IIO_MOD_X, INV_ICM42600_ACCEL_SCAN_X,
+				inv_icm42600_accel_ext_infos),
+	INV_ICM42600_ACCEL_CHAN(IIO_MOD_Y, INV_ICM42600_ACCEL_SCAN_Y,
+				inv_icm42600_accel_ext_infos),
+	INV_ICM42600_ACCEL_CHAN(IIO_MOD_Z, INV_ICM42600_ACCEL_SCAN_Z,
+				inv_icm42600_accel_ext_infos),
+	INV_ICM42600_TEMP_CHAN(INV_ICM42600_ACCEL_SCAN_TEMP),
+	IIO_CHAN_SOFT_TIMESTAMP(INV_ICM42600_ACCEL_SCAN_TIMESTAMP),
+};
+
+/*
+ * IIO buffer data: size must be a power of 2 and timestamp aligned
+ * 16 bytes: 6 bytes acceleration, 2 bytes temperature, 8 bytes timestamp
+ */
+struct inv_icm42600_accel_buffer {
+	struct inv_icm42600_fifo_sensor_data accel;
+	int16_t temp;
+	int64_t timestamp __aligned(8);
+};
+
+#define INV_ICM42600_SCAN_MASK_ACCEL_3AXIS				\
+	(BIT(INV_ICM42600_ACCEL_SCAN_X) |				\
+	BIT(INV_ICM42600_ACCEL_SCAN_Y) |				\
+	BIT(INV_ICM42600_ACCEL_SCAN_Z))
+
+#define INV_ICM42600_SCAN_MASK_TEMP	BIT(INV_ICM42600_ACCEL_SCAN_TEMP)
+
+static const unsigned long inv_icm42600_accel_scan_masks[] = {
+	/* 3-axis accel + temperature */
+	INV_ICM42600_SCAN_MASK_ACCEL_3AXIS | INV_ICM42600_SCAN_MASK_TEMP,
+	0,
+};
+
+/* enable accelerometer sensor and FIFO write */
+static int inv_icm42600_accel_update_scan_mode(struct iio_dev *indio_dev,
+					       const unsigned long *scan_mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	unsigned int fifo_en = 0;
+	unsigned int sleep_temp = 0;
+	unsigned int sleep_accel = 0;
+	unsigned int sleep;
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	if (*scan_mask & INV_ICM42600_SCAN_MASK_TEMP) {
+		/* enable temp sensor */
+		ret = inv_icm42600_set_temp_conf(st, true, &sleep_temp);
+		if (ret)
+			goto out_unlock;
+		fifo_en |= INV_ICM42600_SENSOR_TEMP;
+	}
+
+	if (*scan_mask & INV_ICM42600_SCAN_MASK_ACCEL_3AXIS) {
+		/* enable accel sensor */
+		conf.mode = INV_ICM42600_SENSOR_MODE_LOW_NOISE;
+		ret = inv_icm42600_set_accel_conf(st, &conf, &sleep_accel);
+		if (ret)
+			goto out_unlock;
+		fifo_en |= INV_ICM42600_SENSOR_ACCEL;
+	}
+
+	/* update data FIFO write */
+	inv_icm42600_timestamp_apply_odr(ts, 0, 0, 0);
+	ret = inv_icm42600_buffer_set_fifo_en(st, fifo_en | st->fifo.en);
+	if (ret)
+		goto out_unlock;
+
+	ret = inv_icm42600_buffer_update_watermark(st);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	/* sleep maximum required time */
+	if (sleep_accel > sleep_temp)
+		sleep = sleep_accel;
+	else
+		sleep = sleep_temp;
+	if (sleep)
+		msleep(sleep);
+	return ret;
+}
+
+static int inv_icm42600_accel_read_sensor(struct inv_icm42600_state *st,
+					  struct iio_chan_spec const *chan,
+					  int16_t *val)
+{
+	struct device *dev = regmap_get_device(st->map);
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	unsigned int reg;
+	__be16 *data;
+	int ret;
+
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		reg = INV_ICM42600_REG_ACCEL_DATA_X;
+		break;
+	case IIO_MOD_Y:
+		reg = INV_ICM42600_REG_ACCEL_DATA_Y;
+		break;
+	case IIO_MOD_Z:
+		reg = INV_ICM42600_REG_ACCEL_DATA_Z;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	/* enable accel sensor */
+	conf.mode = INV_ICM42600_SENSOR_MODE_LOW_NOISE;
+	ret = inv_icm42600_set_accel_conf(st, &conf, NULL);
+	if (ret)
+		goto exit;
+
+	/* read accel register data */
+	data = (__be16 *)&st->buffer[0];
+	ret = regmap_bulk_read(st->map, reg, data, sizeof(*data));
+	if (ret)
+		goto exit;
+
+	*val = (int16_t)be16_to_cpup(data);
+	if (*val == INV_ICM42600_DATA_INVALID)
+		ret = -EINVAL;
+exit:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	return ret;
+}
+
+/* IIO format int + nano */
+static const int inv_icm42600_accel_scale[] = {
+	/* +/- 16G => 0.004788403 m/s-2 */
+	[2 * INV_ICM42600_ACCEL_FS_16G] = 0,
+	[2 * INV_ICM42600_ACCEL_FS_16G + 1] = 4788403,
+	/* +/- 8G => 0.002394202 m/s-2 */
+	[2 * INV_ICM42600_ACCEL_FS_8G] = 0,
+	[2 * INV_ICM42600_ACCEL_FS_8G + 1] = 2394202,
+	/* +/- 4G => 0.001197101 m/s-2 */
+	[2 * INV_ICM42600_ACCEL_FS_4G] = 0,
+	[2 * INV_ICM42600_ACCEL_FS_4G + 1] = 1197101,
+	/* +/- 2G => 0.000598550 m/s-2 */
+	[2 * INV_ICM42600_ACCEL_FS_2G] = 0,
+	[2 * INV_ICM42600_ACCEL_FS_2G + 1] = 598550,
+};
+
+static int inv_icm42600_accel_read_scale(struct inv_icm42600_state *st,
+					 int *val, int *val2)
+{
+	unsigned int idx;
+
+	idx = st->conf.accel.fs;
+
+	*val = inv_icm42600_accel_scale[2 * idx];
+	*val2 = inv_icm42600_accel_scale[2 * idx + 1];
+	return IIO_VAL_INT_PLUS_NANO;
+}
+
+static int inv_icm42600_accel_write_scale(struct inv_icm42600_state *st,
+					  int val, int val2)
+{
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int idx;
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	int ret;
+
+	for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_accel_scale); idx += 2) {
+		if (val == inv_icm42600_accel_scale[idx] &&
+		    val2 == inv_icm42600_accel_scale[idx + 1])
+			break;
+	}
+	if (idx >= ARRAY_SIZE(inv_icm42600_accel_scale))
+		return -EINVAL;
+
+	conf.fs = idx / 2;
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_set_accel_conf(st, &conf, NULL);
+
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+/* IIO format int + micro */
+static const int inv_icm42600_accel_odr[] = {
+	/* 12.5Hz */
+	12, 500000,
+	/* 25Hz */
+	25, 0,
+	/* 50Hz */
+	50, 0,
+	/* 100Hz */
+	100, 0,
+	/* 200Hz */
+	200, 0,
+	/* 1kHz */
+	1000, 0,
+	/* 2kHz */
+	2000, 0,
+	/* 4kHz */
+	4000, 0,
+};
+
+static const int inv_icm42600_accel_odr_conv[] = {
+	INV_ICM42600_ODR_12_5HZ,
+	INV_ICM42600_ODR_25HZ,
+	INV_ICM42600_ODR_50HZ,
+	INV_ICM42600_ODR_100HZ,
+	INV_ICM42600_ODR_200HZ,
+	INV_ICM42600_ODR_1KHZ_LN,
+	INV_ICM42600_ODR_2KHZ_LN,
+	INV_ICM42600_ODR_4KHZ_LN,
+};
+
+static int inv_icm42600_accel_read_odr(struct inv_icm42600_state *st,
+				       int *val, int *val2)
+{
+	unsigned int odr;
+	unsigned int i;
+
+	odr = st->conf.accel.odr;
+
+	for (i = 0; i < ARRAY_SIZE(inv_icm42600_accel_odr_conv); ++i) {
+		if (inv_icm42600_accel_odr_conv[i] == odr)
+			break;
+	}
+	if (i >= ARRAY_SIZE(inv_icm42600_accel_odr_conv))
+		return -EINVAL;
+
+	*val = inv_icm42600_accel_odr[2 * i];
+	*val2 = inv_icm42600_accel_odr[2 * i + 1];
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int inv_icm42600_accel_write_odr(struct iio_dev *indio_dev,
+					int val, int val2)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_timestamp *ts = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int idx;
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	int ret;
+
+	for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_accel_odr); idx += 2) {
+		if (val == inv_icm42600_accel_odr[idx] &&
+		    val2 == inv_icm42600_accel_odr[idx + 1])
+			break;
+	}
+	if (idx >= ARRAY_SIZE(inv_icm42600_accel_odr))
+		return -EINVAL;
+
+	conf.odr = inv_icm42600_accel_odr_conv[idx / 2];
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_timestamp_update_odr(ts, inv_icm42600_odr_to_period(conf.odr),
+						iio_buffer_enabled(indio_dev));
+	if (ret)
+		goto out_unlock;
+
+	ret = inv_icm42600_set_accel_conf(st, &conf, NULL);
+	if (ret)
+		goto out_unlock;
+	inv_icm42600_buffer_update_fifo_period(st);
+	inv_icm42600_buffer_update_watermark(st);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+/*
+ * Calibration bias values, IIO range format int + micro.
+ * Value is limited to +/-1g coded on 12 bits signed. Step is 0.5mg.
+ */
+static int inv_icm42600_accel_calibbias[] = {
+	-10, 42010,		/* min: -10.042010 m/s² */
+	0, 4903,		/* step: 0.004903 m/s² */
+	10, 37106,		/* max: 10.037106 m/s² */
+};
+
+static int inv_icm42600_accel_read_offset(struct inv_icm42600_state *st,
+					  struct iio_chan_spec const *chan,
+					  int *val, int *val2)
+{
+	struct device *dev = regmap_get_device(st->map);
+	int64_t val64;
+	int32_t bias;
+	unsigned int reg;
+	int16_t offset;
+	uint8_t data[2];
+	int ret;
+
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		reg = INV_ICM42600_REG_OFFSET_USER4;
+		break;
+	case IIO_MOD_Y:
+		reg = INV_ICM42600_REG_OFFSET_USER6;
+		break;
+	case IIO_MOD_Z:
+		reg = INV_ICM42600_REG_OFFSET_USER7;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = regmap_bulk_read(st->map, reg, st->buffer, sizeof(data));
+	memcpy(data, st->buffer, sizeof(data));
+
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	if (ret)
+		return ret;
+
+	/* 12 bits signed value */
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		offset = sign_extend32(((data[0] & 0xF0) << 4) | data[1], 11);
+		break;
+	case IIO_MOD_Y:
+		offset = sign_extend32(((data[1] & 0x0F) << 8) | data[0], 11);
+		break;
+	case IIO_MOD_Z:
+		offset = sign_extend32(((data[0] & 0xF0) << 4) | data[1], 11);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * convert raw offset to g then to m/s²
+	 * 12 bits signed raw step 0.5mg to g: 5 / 10000
+	 * g to m/s²: 9.806650
+	 * result in micro (1000000)
+	 * (offset * 5 * 9.806650 * 1000000) / 10000
+	 */
+	val64 = (int64_t)offset * 5LL * 9806650LL;
+	/* for rounding, add + or - divisor (10000) divided by 2 */
+	if (val64 >= 0)
+		val64 += 10000LL / 2LL;
+	else
+		val64 -= 10000LL / 2LL;
+	bias = div_s64(val64, 10000L);
+	*val = bias / 1000000L;
+	*val2 = bias % 1000000L;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int inv_icm42600_accel_write_offset(struct inv_icm42600_state *st,
+					   struct iio_chan_spec const *chan,
+					   int val, int val2)
+{
+	struct device *dev = regmap_get_device(st->map);
+	int64_t val64;
+	int32_t min, max;
+	unsigned int reg, regval;
+	int16_t offset;
+	int ret;
+
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		reg = INV_ICM42600_REG_OFFSET_USER4;
+		break;
+	case IIO_MOD_Y:
+		reg = INV_ICM42600_REG_OFFSET_USER6;
+		break;
+	case IIO_MOD_Z:
+		reg = INV_ICM42600_REG_OFFSET_USER7;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* inv_icm42600_accel_calibbias: min - step - max in micro */
+	min = inv_icm42600_accel_calibbias[0] * 1000000L +
+	      inv_icm42600_accel_calibbias[1];
+	max = inv_icm42600_accel_calibbias[4] * 1000000L +
+	      inv_icm42600_accel_calibbias[5];
+	val64 = (int64_t)val * 1000000LL + (int64_t)val2;
+	if (val64 < min || val64 > max)
+		return -EINVAL;
+
+	/*
+	 * convert m/s² to g then to raw value
+	 * m/s² to g: 1 / 9.806650
+	 * g to raw 12 bits signed, step 0.5mg: 10000 / 5
+	 * val in micro (1000000)
+	 * val * 10000 / (9.806650 * 1000000 * 5)
+	 */
+	val64 = val64 * 10000LL;
+	/* for rounding, add + or - divisor (9806650 * 5) divided by 2 */
+	if (val64 >= 0)
+		val64 += 9806650 * 5 / 2;
+	else
+		val64 -= 9806650 * 5 / 2;
+	offset = div_s64(val64, 9806650 * 5);
+
+	/* clamp value limited to 12 bits signed */
+	if (offset < -2048)
+		offset = -2048;
+	else if (offset > 2047)
+		offset = 2047;
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		/* OFFSET_USER4 register is shared */
+		ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER4,
+				  &regval);
+		if (ret)
+			goto out_unlock;
+		st->buffer[0] = ((offset & 0xF00) >> 4) | (regval & 0x0F);
+		st->buffer[1] = offset & 0xFF;
+		break;
+	case IIO_MOD_Y:
+		/* OFFSET_USER7 register is shared */
+		ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER7,
+				  &regval);
+		if (ret)
+			goto out_unlock;
+		st->buffer[0] = offset & 0xFF;
+		st->buffer[1] = ((offset & 0xF00) >> 8) | (regval & 0xF0);
+		break;
+	case IIO_MOD_Z:
+		/* OFFSET_USER7 register is shared */
+		ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER7,
+				  &regval);
+		if (ret)
+			goto out_unlock;
+		st->buffer[0] = ((offset & 0xF00) >> 4) | (regval & 0x0F);
+		st->buffer[1] = offset & 0xFF;
+		break;
+	default:
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	ret = regmap_bulk_write(st->map, reg, st->buffer, 2);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	return ret;
+}
+
+static int inv_icm42600_accel_read_raw(struct iio_dev *indio_dev,
+				       struct iio_chan_spec const *chan,
+				       int *val, int *val2, long mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int16_t data;
+	int ret;
+
+	switch (chan->type) {
+	case IIO_ACCEL:
+		break;
+	case IIO_TEMP:
+		return inv_icm42600_temp_read_raw(indio_dev, chan, val, val2, mask);
+	default:
+		return -EINVAL;
+	}
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_accel_read_sensor(st, chan, &data);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		*val = data;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		return inv_icm42600_accel_read_scale(st, val, val2);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return inv_icm42600_accel_read_odr(st, val, val2);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return inv_icm42600_accel_read_offset(st, chan, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_accel_read_avail(struct iio_dev *indio_dev,
+					 struct iio_chan_spec const *chan,
+					 const int **vals,
+					 int *type, int *length, long mask)
+{
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = inv_icm42600_accel_scale;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		*length = ARRAY_SIZE(inv_icm42600_accel_scale);
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = inv_icm42600_accel_odr;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(inv_icm42600_accel_odr);
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		*vals = inv_icm42600_accel_calibbias;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_RANGE;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_accel_write_raw(struct iio_dev *indio_dev,
+					struct iio_chan_spec const *chan,
+					int val, int val2, long mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_accel_write_scale(st, val, val2);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return inv_icm42600_accel_write_odr(indio_dev, val, val2);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_accel_write_offset(st, chan, val, val2);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_accel_write_raw_get_fmt(struct iio_dev *indio_dev,
+						struct iio_chan_spec const *chan,
+						long mask)
+{
+	if (chan->type != IIO_ACCEL)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_accel_hwfifo_set_watermark(struct iio_dev *indio_dev,
+						   unsigned int val)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	st->fifo.watermark.accel = val;
+	ret = inv_icm42600_buffer_update_watermark(st);
+
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int inv_icm42600_accel_hwfifo_flush(struct iio_dev *indio_dev,
+					   unsigned int count)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	if (count == 0)
+		return 0;
+
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_buffer_hwfifo_flush(st, count);
+	if (!ret)
+		ret = st->fifo.nb.accel;
+
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static const struct iio_info inv_icm42600_accel_info = {
+	.read_raw = inv_icm42600_accel_read_raw,
+	.read_avail = inv_icm42600_accel_read_avail,
+	.write_raw = inv_icm42600_accel_write_raw,
+	.write_raw_get_fmt = inv_icm42600_accel_write_raw_get_fmt,
+	.debugfs_reg_access = inv_icm42600_debugfs_reg,
+	.update_scan_mode = inv_icm42600_accel_update_scan_mode,
+	.hwfifo_set_watermark = inv_icm42600_accel_hwfifo_set_watermark,
+	.hwfifo_flush_to_buffer = inv_icm42600_accel_hwfifo_flush,
+};
+
+struct iio_dev *inv_icm42600_accel_init(struct inv_icm42600_state *st)
+{
+	struct device *dev = regmap_get_device(st->map);
+	const char *name;
+	struct inv_icm42600_timestamp *ts;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	name = devm_kasprintf(dev, GFP_KERNEL, "%s-accel", st->name);
+	if (!name)
+		return ERR_PTR(-ENOMEM);
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*ts));
+	if (!indio_dev)
+		return ERR_PTR(-ENOMEM);
+
+	ts = iio_priv(indio_dev);
+	inv_icm42600_timestamp_init(ts, inv_icm42600_odr_to_period(st->conf.accel.odr));
+
+	iio_device_set_drvdata(indio_dev, st);
+	indio_dev->name = name;
+	indio_dev->info = &inv_icm42600_accel_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = inv_icm42600_accel_channels;
+	indio_dev->num_channels = ARRAY_SIZE(inv_icm42600_accel_channels);
+	indio_dev->available_scan_masks = inv_icm42600_accel_scan_masks;
+
+	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
+					  &inv_icm42600_buffer_ops);
+	if (ret)
+		return ERR_PTR(ret);
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return indio_dev;
+}
+
+int inv_icm42600_accel_parse_fifo(struct iio_dev *indio_dev)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_timestamp *ts = iio_priv(indio_dev);
+	ssize_t i, size;
+	unsigned int no;
+	const void *accel, *gyro, *timestamp;
+	const int8_t *temp;
+	unsigned int odr;
+	int64_t ts_val;
+	struct inv_icm42600_accel_buffer buffer;
+
+	/* parse all fifo packets */
+	for (i = 0, no = 0; i < st->fifo.count; i += size, ++no) {
+		size = inv_icm42600_fifo_decode_packet(&st->fifo.data[i],
+				&accel, &gyro, &temp, &timestamp, &odr);
+		/* quit if error or FIFO is empty */
+		if (size <= 0)
+			return size;
+
+		/* skip packet if no accel data or data is invalid */
+		if (accel == NULL || !inv_icm42600_fifo_is_data_valid(accel))
+			continue;
+
+		/* update odr */
+		if (odr & INV_ICM42600_SENSOR_ACCEL)
+			inv_icm42600_timestamp_apply_odr(ts, st->fifo.period,
+							 st->fifo.nb.total, no);
+
+		/* buffer is copied to userspace, zeroing it to avoid any data leak */
+		memset(&buffer, 0, sizeof(buffer));
+		memcpy(&buffer.accel, accel, sizeof(buffer.accel));
+		/* convert 8 bits FIFO temperature in high resolution format */
+		buffer.temp = temp ? (*temp * 64) : 0;
+		ts_val = inv_icm42600_timestamp_pop(ts);
+		iio_push_to_buffers_with_timestamp(indio_dev, &buffer, ts_val);
+	}
+
+	return 0;
+}
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c
new file mode 100644
index 000000000000..99576b2c171f
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.c
@@ -0,0 +1,601 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/delay.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+
+#include "inv_icm42600.h"
+#include "inv_icm42600_timestamp.h"
+#include "inv_icm42600_buffer.h"
+
+/* FIFO header: 1 byte */
+#define INV_ICM42600_FIFO_HEADER_MSG		BIT(7)
+#define INV_ICM42600_FIFO_HEADER_ACCEL		BIT(6)
+#define INV_ICM42600_FIFO_HEADER_GYRO		BIT(5)
+#define INV_ICM42600_FIFO_HEADER_TMST_FSYNC	GENMASK(3, 2)
+#define INV_ICM42600_FIFO_HEADER_ODR_ACCEL	BIT(1)
+#define INV_ICM42600_FIFO_HEADER_ODR_GYRO	BIT(0)
+
+struct inv_icm42600_fifo_1sensor_packet {
+	uint8_t header;
+	struct inv_icm42600_fifo_sensor_data data;
+	int8_t temp;
+} __packed;
+#define INV_ICM42600_FIFO_1SENSOR_PACKET_SIZE		8
+
+struct inv_icm42600_fifo_2sensors_packet {
+	uint8_t header;
+	struct inv_icm42600_fifo_sensor_data accel;
+	struct inv_icm42600_fifo_sensor_data gyro;
+	int8_t temp;
+	__be16 timestamp;
+} __packed;
+#define INV_ICM42600_FIFO_2SENSORS_PACKET_SIZE		16
+
+ssize_t inv_icm42600_fifo_decode_packet(const void *packet, const void **accel,
+					const void **gyro, const int8_t **temp,
+					const void **timestamp, unsigned int *odr)
+{
+	const struct inv_icm42600_fifo_1sensor_packet *pack1 = packet;
+	const struct inv_icm42600_fifo_2sensors_packet *pack2 = packet;
+	uint8_t header = *((const uint8_t *)packet);
+
+	/* FIFO empty */
+	if (header & INV_ICM42600_FIFO_HEADER_MSG) {
+		*accel = NULL;
+		*gyro = NULL;
+		*temp = NULL;
+		*timestamp = NULL;
+		*odr = 0;
+		return 0;
+	}
+
+	/* handle odr flags */
+	*odr = 0;
+	if (header & INV_ICM42600_FIFO_HEADER_ODR_GYRO)
+		*odr |= INV_ICM42600_SENSOR_GYRO;
+	if (header & INV_ICM42600_FIFO_HEADER_ODR_ACCEL)
+		*odr |= INV_ICM42600_SENSOR_ACCEL;
+
+	/* accel + gyro */
+	if ((header & INV_ICM42600_FIFO_HEADER_ACCEL) &&
+	    (header & INV_ICM42600_FIFO_HEADER_GYRO)) {
+		*accel = &pack2->accel;
+		*gyro = &pack2->gyro;
+		*temp = &pack2->temp;
+		*timestamp = &pack2->timestamp;
+		return INV_ICM42600_FIFO_2SENSORS_PACKET_SIZE;
+	}
+
+	/* accel only */
+	if (header & INV_ICM42600_FIFO_HEADER_ACCEL) {
+		*accel = &pack1->data;
+		*gyro = NULL;
+		*temp = &pack1->temp;
+		*timestamp = NULL;
+		return INV_ICM42600_FIFO_1SENSOR_PACKET_SIZE;
+	}
+
+	/* gyro only */
+	if (header & INV_ICM42600_FIFO_HEADER_GYRO) {
+		*accel = NULL;
+		*gyro = &pack1->data;
+		*temp = &pack1->temp;
+		*timestamp = NULL;
+		return INV_ICM42600_FIFO_1SENSOR_PACKET_SIZE;
+	}
+
+	/* invalid packet if here */
+	return -EINVAL;
+}
+
+void inv_icm42600_buffer_update_fifo_period(struct inv_icm42600_state *st)
+{
+	uint32_t period_gyro, period_accel, period;
+
+	if (st->fifo.en & INV_ICM42600_SENSOR_GYRO)
+		period_gyro = inv_icm42600_odr_to_period(st->conf.gyro.odr);
+	else
+		period_gyro = U32_MAX;
+
+	if (st->fifo.en & INV_ICM42600_SENSOR_ACCEL)
+		period_accel = inv_icm42600_odr_to_period(st->conf.accel.odr);
+	else
+		period_accel = U32_MAX;
+
+	if (period_gyro <= period_accel)
+		period = period_gyro;
+	else
+		period = period_accel;
+
+	st->fifo.period = period;
+}
+
+int inv_icm42600_buffer_set_fifo_en(struct inv_icm42600_state *st,
+				    unsigned int fifo_en)
+{
+	unsigned int mask, val;
+	int ret;
+
+	/* update only FIFO EN bits */
+	mask = INV_ICM42600_FIFO_CONFIG1_TMST_FSYNC_EN |
+		INV_ICM42600_FIFO_CONFIG1_TEMP_EN |
+		INV_ICM42600_FIFO_CONFIG1_GYRO_EN |
+		INV_ICM42600_FIFO_CONFIG1_ACCEL_EN;
+
+	val = 0;
+	if (fifo_en & INV_ICM42600_SENSOR_GYRO)
+		val |= INV_ICM42600_FIFO_CONFIG1_GYRO_EN;
+	if (fifo_en & INV_ICM42600_SENSOR_ACCEL)
+		val |= INV_ICM42600_FIFO_CONFIG1_ACCEL_EN;
+	if (fifo_en & INV_ICM42600_SENSOR_TEMP)
+		val |= INV_ICM42600_FIFO_CONFIG1_TEMP_EN;
+
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_FIFO_CONFIG1, mask, val);
+	if (ret)
+		return ret;
+
+	st->fifo.en = fifo_en;
+	inv_icm42600_buffer_update_fifo_period(st);
+
+	return 0;
+}
+
+static size_t inv_icm42600_get_packet_size(unsigned int fifo_en)
+{
+	size_t packet_size;
+
+	if ((fifo_en & INV_ICM42600_SENSOR_GYRO) &&
+	    (fifo_en & INV_ICM42600_SENSOR_ACCEL))
+		packet_size = INV_ICM42600_FIFO_2SENSORS_PACKET_SIZE;
+	else
+		packet_size = INV_ICM42600_FIFO_1SENSOR_PACKET_SIZE;
+
+	return packet_size;
+}
+
+static unsigned int inv_icm42600_wm_truncate(unsigned int watermark,
+					     size_t packet_size)
+{
+	size_t wm_size;
+	unsigned int wm;
+
+	wm_size = watermark * packet_size;
+	if (wm_size > INV_ICM42600_FIFO_WATERMARK_MAX)
+		wm_size = INV_ICM42600_FIFO_WATERMARK_MAX;
+
+	wm = wm_size / packet_size;
+
+	return wm;
+}
+
+/**
+ * inv_icm42600_buffer_update_watermark - update watermark FIFO threshold
+ * @st:	driver internal state
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ *
+ * FIFO watermark threshold is computed based on the required watermark values
+ * set for gyro and accel sensors. Since watermark is all about acceptable data
+ * latency, use the smallest setting between the 2. It means choosing the
+ * smallest latency but this is not as simple as choosing the smallest watermark
+ * value. Latency depends on watermark and ODR. It requires several steps:
+ * 1) compute gyro and accel latencies and choose the smallest value.
+ * 2) adapt the choosen latency so that it is a multiple of both gyro and accel
+ *    ones. Otherwise it is possible that you don't meet a requirement. (for
+ *    example with gyro @100Hz wm 4 and accel @100Hz with wm 6, choosing the
+ *    value of 4 will not meet accel latency requirement because 6 is not a
+ *    multiple of 4. You need to use the value 2.)
+ * 3) Since all periods are multiple of each others, watermark is computed by
+ *    dividing this computed latency by the smallest period, which corresponds
+ *    to the FIFO frequency. Beware that this is only true because we are not
+ *    using 500Hz frequency which is not a multiple of the others.
+ */
+int inv_icm42600_buffer_update_watermark(struct inv_icm42600_state *st)
+{
+	size_t packet_size, wm_size;
+	unsigned int wm_gyro, wm_accel, watermark;
+	uint32_t period_gyro, period_accel, period;
+	uint32_t latency_gyro, latency_accel, latency;
+	bool restore;
+	__le16 raw_wm;
+	int ret;
+
+	packet_size = inv_icm42600_get_packet_size(st->fifo.en);
+
+	/* compute sensors latency, depending on sensor watermark and odr */
+	wm_gyro = inv_icm42600_wm_truncate(st->fifo.watermark.gyro, packet_size);
+	wm_accel = inv_icm42600_wm_truncate(st->fifo.watermark.accel, packet_size);
+	/* use us for odr to avoid overflow using 32 bits values */
+	period_gyro = inv_icm42600_odr_to_period(st->conf.gyro.odr) / 1000UL;
+	period_accel = inv_icm42600_odr_to_period(st->conf.accel.odr) / 1000UL;
+	latency_gyro = period_gyro * wm_gyro;
+	latency_accel = period_accel * wm_accel;
+
+	/* 0 value for watermark means that the sensor is turned off */
+	if (latency_gyro == 0) {
+		watermark = wm_accel;
+	} else if (latency_accel == 0) {
+		watermark = wm_gyro;
+	} else {
+		/* compute the smallest latency that is a multiple of both */
+		if (latency_gyro <= latency_accel)
+			latency = latency_gyro - (latency_accel % latency_gyro);
+		else
+			latency = latency_accel - (latency_gyro % latency_accel);
+		/* use the shortest period */
+		if (period_gyro <= period_accel)
+			period = period_gyro;
+		else
+			period = period_accel;
+		/* all this works because periods are multiple of each others */
+		watermark = latency / period;
+		if (watermark < 1)
+			watermark = 1;
+	}
+
+	/* compute watermark value in bytes */
+	wm_size = watermark * packet_size;
+
+	/* changing FIFO watermark requires to turn off watermark interrupt */
+	ret = regmap_update_bits_check(st->map, INV_ICM42600_REG_INT_SOURCE0,
+				       INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN,
+				       0, &restore);
+	if (ret)
+		return ret;
+
+	raw_wm = INV_ICM42600_FIFO_WATERMARK_VAL(wm_size);
+	memcpy(st->buffer, &raw_wm, sizeof(raw_wm));
+	ret = regmap_bulk_write(st->map, INV_ICM42600_REG_FIFO_WATERMARK,
+				st->buffer, sizeof(raw_wm));
+	if (ret)
+		return ret;
+
+	/* restore watermark interrupt */
+	if (restore) {
+		ret = regmap_update_bits(st->map, INV_ICM42600_REG_INT_SOURCE0,
+					 INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN,
+					 INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+static int inv_icm42600_buffer_preenable(struct iio_dev *indio_dev)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct device *dev = regmap_get_device(st->map);
+
+	pm_runtime_get_sync(dev);
+
+	return 0;
+}
+
+/*
+ * update_scan_mode callback is turning sensors on and setting data FIFO enable
+ * bits.
+ */
+static int inv_icm42600_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	/* exit if FIFO is already on */
+	if (st->fifo.on) {
+		ret = 0;
+		goto out_on;
+	}
+
+	/* set FIFO threshold interrupt */
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INT_SOURCE0,
+				 INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN,
+				 INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN);
+	if (ret)
+		goto out_unlock;
+
+	/* flush FIFO data */
+	ret = regmap_write(st->map, INV_ICM42600_REG_SIGNAL_PATH_RESET,
+			   INV_ICM42600_SIGNAL_PATH_RESET_FIFO_FLUSH);
+	if (ret)
+		goto out_unlock;
+
+	/* set FIFO in streaming mode */
+	ret = regmap_write(st->map, INV_ICM42600_REG_FIFO_CONFIG,
+			   INV_ICM42600_FIFO_CONFIG_STREAM);
+	if (ret)
+		goto out_unlock;
+
+	/* workaround: first read of FIFO count after reset is always 0 */
+	ret = regmap_bulk_read(st->map, INV_ICM42600_REG_FIFO_COUNT, st->buffer, 2);
+	if (ret)
+		goto out_unlock;
+
+out_on:
+	/* increase FIFO on counter */
+	st->fifo.on++;
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int inv_icm42600_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	/* exit if there are several sensors using the FIFO */
+	if (st->fifo.on > 1) {
+		ret = 0;
+		goto out_off;
+	}
+
+	/* set FIFO in bypass mode */
+	ret = regmap_write(st->map, INV_ICM42600_REG_FIFO_CONFIG,
+			   INV_ICM42600_FIFO_CONFIG_BYPASS);
+	if (ret)
+		goto out_unlock;
+
+	/* flush FIFO data */
+	ret = regmap_write(st->map, INV_ICM42600_REG_SIGNAL_PATH_RESET,
+			   INV_ICM42600_SIGNAL_PATH_RESET_FIFO_FLUSH);
+	if (ret)
+		goto out_unlock;
+
+	/* disable FIFO threshold interrupt */
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INT_SOURCE0,
+				 INV_ICM42600_INT_SOURCE0_FIFO_THS_INT1_EN, 0);
+	if (ret)
+		goto out_unlock;
+
+out_off:
+	/* decrease FIFO on counter */
+	st->fifo.on--;
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int inv_icm42600_buffer_postdisable(struct iio_dev *indio_dev)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int sensor;
+	unsigned int *watermark;
+	struct inv_icm42600_timestamp *ts;
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	unsigned int sleep_temp = 0;
+	unsigned int sleep_sensor = 0;
+	unsigned int sleep;
+	int ret;
+
+	if (indio_dev == st->indio_gyro) {
+		sensor = INV_ICM42600_SENSOR_GYRO;
+		watermark = &st->fifo.watermark.gyro;
+		ts = iio_priv(st->indio_gyro);
+	} else if (indio_dev == st->indio_accel) {
+		sensor = INV_ICM42600_SENSOR_ACCEL;
+		watermark = &st->fifo.watermark.accel;
+		ts = iio_priv(st->indio_accel);
+	} else {
+		return -EINVAL;
+	}
+
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_buffer_set_fifo_en(st, st->fifo.en & ~sensor);
+	if (ret)
+		goto out_unlock;
+
+	*watermark = 0;
+	ret = inv_icm42600_buffer_update_watermark(st);
+	if (ret)
+		goto out_unlock;
+
+	conf.mode = INV_ICM42600_SENSOR_MODE_OFF;
+	if (sensor == INV_ICM42600_SENSOR_GYRO)
+		ret = inv_icm42600_set_gyro_conf(st, &conf, &sleep_sensor);
+	else
+		ret = inv_icm42600_set_accel_conf(st, &conf, &sleep_sensor);
+	if (ret)
+		goto out_unlock;
+
+	/* if FIFO is off, turn temperature off */
+	if (!st->fifo.on)
+		ret = inv_icm42600_set_temp_conf(st, false, &sleep_temp);
+
+	inv_icm42600_timestamp_reset(ts);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+
+	/* sleep maximum required time */
+	if (sleep_sensor > sleep_temp)
+		sleep = sleep_sensor;
+	else
+		sleep = sleep_temp;
+	if (sleep)
+		msleep(sleep);
+
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+const struct iio_buffer_setup_ops inv_icm42600_buffer_ops = {
+	.preenable = inv_icm42600_buffer_preenable,
+	.postenable = inv_icm42600_buffer_postenable,
+	.predisable = inv_icm42600_buffer_predisable,
+	.postdisable = inv_icm42600_buffer_postdisable,
+};
+
+int inv_icm42600_buffer_fifo_read(struct inv_icm42600_state *st,
+				  unsigned int max)
+{
+	size_t max_count;
+	__be16 *raw_fifo_count;
+	ssize_t i, size;
+	const void *accel, *gyro, *timestamp;
+	const int8_t *temp;
+	unsigned int odr;
+	int ret;
+
+	/* reset all samples counters */
+	st->fifo.count = 0;
+	st->fifo.nb.gyro = 0;
+	st->fifo.nb.accel = 0;
+	st->fifo.nb.total = 0;
+
+	/* compute maximum FIFO read size */
+	if (max == 0)
+		max_count = sizeof(st->fifo.data);
+	else
+		max_count = max * inv_icm42600_get_packet_size(st->fifo.en);
+
+	/* read FIFO count value */
+	raw_fifo_count = (__be16 *)st->buffer;
+	ret = regmap_bulk_read(st->map, INV_ICM42600_REG_FIFO_COUNT,
+			       raw_fifo_count, sizeof(*raw_fifo_count));
+	if (ret)
+		return ret;
+	st->fifo.count = be16_to_cpup(raw_fifo_count);
+
+	/* check and clamp FIFO count value */
+	if (st->fifo.count == 0)
+		return 0;
+	if (st->fifo.count > max_count)
+		st->fifo.count = max_count;
+
+	/* read all FIFO data in internal buffer */
+	ret = regmap_noinc_read(st->map, INV_ICM42600_REG_FIFO_DATA,
+				st->fifo.data, st->fifo.count);
+	if (ret)
+		return ret;
+
+	/* compute number of samples for each sensor */
+	for (i = 0; i < st->fifo.count; i += size) {
+		size = inv_icm42600_fifo_decode_packet(&st->fifo.data[i],
+				&accel, &gyro, &temp, &timestamp, &odr);
+		if (size <= 0)
+			break;
+		if (gyro != NULL && inv_icm42600_fifo_is_data_valid(gyro))
+			st->fifo.nb.gyro++;
+		if (accel != NULL && inv_icm42600_fifo_is_data_valid(accel))
+			st->fifo.nb.accel++;
+		st->fifo.nb.total++;
+	}
+
+	return 0;
+}
+
+int inv_icm42600_buffer_fifo_parse(struct inv_icm42600_state *st)
+{
+	struct inv_icm42600_timestamp *ts;
+	int ret;
+
+	if (st->fifo.nb.total == 0)
+		return 0;
+
+	/* handle gyroscope timestamp and FIFO data parsing */
+	ts = iio_priv(st->indio_gyro);
+	inv_icm42600_timestamp_interrupt(ts, st->fifo.period, st->fifo.nb.total,
+					 st->fifo.nb.gyro, st->timestamp.gyro);
+	if (st->fifo.nb.gyro > 0) {
+		ret = inv_icm42600_gyro_parse_fifo(st->indio_gyro);
+		if (ret)
+			return ret;
+	}
+
+	/* handle accelerometer timestamp and FIFO data parsing */
+	ts = iio_priv(st->indio_accel);
+	inv_icm42600_timestamp_interrupt(ts, st->fifo.period, st->fifo.nb.total,
+					 st->fifo.nb.accel, st->timestamp.accel);
+	if (st->fifo.nb.accel > 0) {
+		ret = inv_icm42600_accel_parse_fifo(st->indio_accel);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+int inv_icm42600_buffer_hwfifo_flush(struct inv_icm42600_state *st,
+				     unsigned int count)
+{
+	struct inv_icm42600_timestamp *ts;
+	int64_t gyro_ts, accel_ts;
+	int ret;
+
+	gyro_ts = iio_get_time_ns(st->indio_gyro);
+	accel_ts = iio_get_time_ns(st->indio_accel);
+
+	ret = inv_icm42600_buffer_fifo_read(st, count);
+	if (ret)
+		return ret;
+
+	if (st->fifo.nb.total == 0)
+		return 0;
+
+	if (st->fifo.nb.gyro > 0) {
+		ts = iio_priv(st->indio_gyro);
+		inv_icm42600_timestamp_interrupt(ts, st->fifo.period,
+						 st->fifo.nb.total, st->fifo.nb.gyro,
+						 gyro_ts);
+		ret = inv_icm42600_gyro_parse_fifo(st->indio_gyro);
+		if (ret)
+			return ret;
+	}
+
+	if (st->fifo.nb.accel > 0) {
+		ts = iio_priv(st->indio_accel);
+		inv_icm42600_timestamp_interrupt(ts, st->fifo.period,
+						 st->fifo.nb.total, st->fifo.nb.accel,
+						 accel_ts);
+		ret = inv_icm42600_accel_parse_fifo(st->indio_accel);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+int inv_icm42600_buffer_init(struct inv_icm42600_state *st)
+{
+	unsigned int val;
+	int ret;
+
+	/*
+	 * Default FIFO configuration (bits 7 to 5)
+	 * - use invalid value
+	 * - FIFO count in bytes
+	 * - FIFO count in big endian
+	 */
+	val = INV_ICM42600_INTF_CONFIG0_FIFO_COUNT_ENDIAN;
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG0,
+				 GENMASK(7, 5), val);
+	if (ret)
+		return ret;
+
+	/*
+	 * Enable FIFO partial read and continuous watermark interrupt.
+	 * Disable all FIFO EN bits.
+	 */
+	val = INV_ICM42600_FIFO_CONFIG1_RESUME_PARTIAL_RD |
+	      INV_ICM42600_FIFO_CONFIG1_WM_GT_TH;
+	return regmap_update_bits(st->map, INV_ICM42600_REG_FIFO_CONFIG1,
+				  GENMASK(6, 5) | GENMASK(3, 0), val);
+}
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h b/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h
new file mode 100644
index 000000000000..8b85ee333bf8
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_buffer.h
@@ -0,0 +1,98 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#ifndef INV_ICM42600_BUFFER_H_
+#define INV_ICM42600_BUFFER_H_
+
+#include <linux/kernel.h>
+#include <linux/bits.h>
+
+struct inv_icm42600_state;
+
+#define INV_ICM42600_SENSOR_GYRO	BIT(0)
+#define INV_ICM42600_SENSOR_ACCEL	BIT(1)
+#define INV_ICM42600_SENSOR_TEMP	BIT(2)
+
+/**
+ * struct inv_icm42600_fifo - FIFO state variables
+ * @on:		reference counter for FIFO on.
+ * @en:		bits field of INV_ICM42600_SENSOR_* for FIFO EN bits.
+ * @period:	FIFO internal period.
+ * @watermark:	watermark configuration values for accel and gyro.
+ * @count:	number of bytes in the FIFO data buffer.
+ * @nb:		gyro, accel and total samples in the FIFO data buffer.
+ * @data:	FIFO data buffer aligned for DMA (2kB + 32 bytes of read cache).
+ */
+struct inv_icm42600_fifo {
+	unsigned int on;
+	unsigned int en;
+	uint32_t period;
+	struct {
+		unsigned int gyro;
+		unsigned int accel;
+	} watermark;
+	size_t count;
+	struct {
+		size_t gyro;
+		size_t accel;
+		size_t total;
+	} nb;
+	uint8_t data[2080] __aligned(IIO_DMA_MINALIGN);
+};
+
+/* FIFO data packet */
+struct inv_icm42600_fifo_sensor_data {
+	__be16 x;
+	__be16 y;
+	__be16 z;
+} __packed;
+#define INV_ICM42600_FIFO_DATA_INVALID		-32768
+
+static inline int16_t inv_icm42600_fifo_get_sensor_data(__be16 d)
+{
+	return be16_to_cpu(d);
+}
+
+static inline bool
+inv_icm42600_fifo_is_data_valid(const struct inv_icm42600_fifo_sensor_data *s)
+{
+	int16_t x, y, z;
+
+	x = inv_icm42600_fifo_get_sensor_data(s->x);
+	y = inv_icm42600_fifo_get_sensor_data(s->y);
+	z = inv_icm42600_fifo_get_sensor_data(s->z);
+
+	if (x == INV_ICM42600_FIFO_DATA_INVALID &&
+	    y == INV_ICM42600_FIFO_DATA_INVALID &&
+	    z == INV_ICM42600_FIFO_DATA_INVALID)
+		return false;
+
+	return true;
+}
+
+ssize_t inv_icm42600_fifo_decode_packet(const void *packet, const void **accel,
+					const void **gyro, const int8_t **temp,
+					const void **timestamp, unsigned int *odr);
+
+extern const struct iio_buffer_setup_ops inv_icm42600_buffer_ops;
+
+int inv_icm42600_buffer_init(struct inv_icm42600_state *st);
+
+void inv_icm42600_buffer_update_fifo_period(struct inv_icm42600_state *st);
+
+int inv_icm42600_buffer_set_fifo_en(struct inv_icm42600_state *st,
+				    unsigned int fifo_en);
+
+int inv_icm42600_buffer_update_watermark(struct inv_icm42600_state *st);
+
+int inv_icm42600_buffer_fifo_read(struct inv_icm42600_state *st,
+				  unsigned int max);
+
+int inv_icm42600_buffer_fifo_parse(struct inv_icm42600_state *st);
+
+int inv_icm42600_buffer_hwfifo_flush(struct inv_icm42600_state *st,
+				     unsigned int count);
+
+#endif
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
new file mode 100644
index 000000000000..ca85fccc9839
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_core.c
@@ -0,0 +1,786 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/interrupt.h>
+#include <linux/irq.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+
+#include "inv_icm42600.h"
+#include "inv_icm42600_buffer.h"
+#include "inv_icm42600_timestamp.h"
+
+static const struct regmap_range_cfg inv_icm42600_regmap_ranges[] = {
+	{
+		.name = "user banks",
+		.range_min = 0x0000,
+		.range_max = 0x4FFF,
+		.selector_reg = INV_ICM42600_REG_BANK_SEL,
+		.selector_mask = INV_ICM42600_BANK_SEL_MASK,
+		.selector_shift = 0,
+		.window_start = 0,
+		.window_len = 0x1000,
+	},
+};
+
+const struct regmap_config inv_icm42600_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = 0x4FFF,
+	.ranges = inv_icm42600_regmap_ranges,
+	.num_ranges = ARRAY_SIZE(inv_icm42600_regmap_ranges),
+};
+EXPORT_SYMBOL_GPL(inv_icm42600_regmap_config);
+
+struct inv_icm42600_hw {
+	uint8_t whoami;
+	const char *name;
+	const struct inv_icm42600_conf *conf;
+};
+
+/* chip initial default configuration */
+static const struct inv_icm42600_conf inv_icm42600_default_conf = {
+	.gyro = {
+		.mode = INV_ICM42600_SENSOR_MODE_OFF,
+		.fs = INV_ICM42600_GYRO_FS_2000DPS,
+		.odr = INV_ICM42600_ODR_50HZ,
+		.filter = INV_ICM42600_FILTER_BW_ODR_DIV_2,
+	},
+	.accel = {
+		.mode = INV_ICM42600_SENSOR_MODE_OFF,
+		.fs = INV_ICM42600_ACCEL_FS_16G,
+		.odr = INV_ICM42600_ODR_50HZ,
+		.filter = INV_ICM42600_FILTER_BW_ODR_DIV_2,
+	},
+	.temp_en = false,
+};
+
+static const struct inv_icm42600_hw inv_icm42600_hw[INV_CHIP_NB] = {
+	[INV_CHIP_ICM42600] = {
+		.whoami = INV_ICM42600_WHOAMI_ICM42600,
+		.name = "icm42600",
+		.conf = &inv_icm42600_default_conf,
+	},
+	[INV_CHIP_ICM42602] = {
+		.whoami = INV_ICM42600_WHOAMI_ICM42602,
+		.name = "icm42602",
+		.conf = &inv_icm42600_default_conf,
+	},
+	[INV_CHIP_ICM42605] = {
+		.whoami = INV_ICM42600_WHOAMI_ICM42605,
+		.name = "icm42605",
+		.conf = &inv_icm42600_default_conf,
+	},
+	[INV_CHIP_ICM42622] = {
+		.whoami = INV_ICM42600_WHOAMI_ICM42622,
+		.name = "icm42622",
+		.conf = &inv_icm42600_default_conf,
+	},
+};
+
+const struct iio_mount_matrix *
+inv_icm42600_get_mount_matrix(const struct iio_dev *indio_dev,
+			      const struct iio_chan_spec *chan)
+{
+	const struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+
+	return &st->orientation;
+}
+
+uint32_t inv_icm42600_odr_to_period(enum inv_icm42600_odr odr)
+{
+	static uint32_t odr_periods[INV_ICM42600_ODR_NB] = {
+		/* reserved values */
+		0, 0, 0,
+		/* 8kHz */
+		125000,
+		/* 4kHz */
+		250000,
+		/* 2kHz */
+		500000,
+		/* 1kHz */
+		1000000,
+		/* 200Hz */
+		5000000,
+		/* 100Hz */
+		10000000,
+		/* 50Hz */
+		20000000,
+		/* 25Hz */
+		40000000,
+		/* 12.5Hz */
+		80000000,
+		/* 6.25Hz */
+		160000000,
+		/* 3.125Hz */
+		320000000,
+		/* 1.5625Hz */
+		640000000,
+		/* 500Hz */
+		2000000,
+	};
+
+	return odr_periods[odr];
+}
+
+static int inv_icm42600_set_pwr_mgmt0(struct inv_icm42600_state *st,
+				      enum inv_icm42600_sensor_mode gyro,
+				      enum inv_icm42600_sensor_mode accel,
+				      bool temp, unsigned int *sleep_ms)
+{
+	enum inv_icm42600_sensor_mode oldgyro = st->conf.gyro.mode;
+	enum inv_icm42600_sensor_mode oldaccel = st->conf.accel.mode;
+	bool oldtemp = st->conf.temp_en;
+	unsigned int sleepval;
+	unsigned int val;
+	int ret;
+
+	/* if nothing changed, exit */
+	if (gyro == oldgyro && accel == oldaccel && temp == oldtemp)
+		return 0;
+
+	val = INV_ICM42600_PWR_MGMT0_GYRO(gyro) |
+	      INV_ICM42600_PWR_MGMT0_ACCEL(accel);
+	if (!temp)
+		val |= INV_ICM42600_PWR_MGMT0_TEMP_DIS;
+	ret = regmap_write(st->map, INV_ICM42600_REG_PWR_MGMT0, val);
+	if (ret)
+		return ret;
+
+	st->conf.gyro.mode = gyro;
+	st->conf.accel.mode = accel;
+	st->conf.temp_en = temp;
+
+	/* compute required wait time for sensors to stabilize */
+	sleepval = 0;
+	/* temperature stabilization time */
+	if (temp && !oldtemp) {
+		if (sleepval < INV_ICM42600_TEMP_STARTUP_TIME_MS)
+			sleepval = INV_ICM42600_TEMP_STARTUP_TIME_MS;
+	}
+	/* accel startup time */
+	if (accel != oldaccel && oldaccel == INV_ICM42600_SENSOR_MODE_OFF) {
+		/* block any register write for at least 200 µs */
+		usleep_range(200, 300);
+		if (sleepval < INV_ICM42600_ACCEL_STARTUP_TIME_MS)
+			sleepval = INV_ICM42600_ACCEL_STARTUP_TIME_MS;
+	}
+	if (gyro != oldgyro) {
+		/* gyro startup time */
+		if (oldgyro == INV_ICM42600_SENSOR_MODE_OFF) {
+			/* block any register write for at least 200 µs */
+			usleep_range(200, 300);
+			if (sleepval < INV_ICM42600_GYRO_STARTUP_TIME_MS)
+				sleepval = INV_ICM42600_GYRO_STARTUP_TIME_MS;
+		/* gyro stop time */
+		} else if (gyro == INV_ICM42600_SENSOR_MODE_OFF) {
+			if (sleepval < INV_ICM42600_GYRO_STOP_TIME_MS)
+				sleepval =  INV_ICM42600_GYRO_STOP_TIME_MS;
+		}
+	}
+
+	/* deferred sleep value if sleep pointer is provided or direct sleep */
+	if (sleep_ms)
+		*sleep_ms = sleepval;
+	else if (sleepval)
+		msleep(sleepval);
+
+	return 0;
+}
+
+int inv_icm42600_set_accel_conf(struct inv_icm42600_state *st,
+				struct inv_icm42600_sensor_conf *conf,
+				unsigned int *sleep_ms)
+{
+	struct inv_icm42600_sensor_conf *oldconf = &st->conf.accel;
+	unsigned int val;
+	int ret;
+
+	/* Sanitize missing values with current values */
+	if (conf->mode < 0)
+		conf->mode = oldconf->mode;
+	if (conf->fs < 0)
+		conf->fs = oldconf->fs;
+	if (conf->odr < 0)
+		conf->odr = oldconf->odr;
+	if (conf->filter < 0)
+		conf->filter = oldconf->filter;
+
+	/* set ACCEL_CONFIG0 register (accel fullscale & odr) */
+	if (conf->fs != oldconf->fs || conf->odr != oldconf->odr) {
+		val = INV_ICM42600_ACCEL_CONFIG0_FS(conf->fs) |
+		      INV_ICM42600_ACCEL_CONFIG0_ODR(conf->odr);
+		ret = regmap_write(st->map, INV_ICM42600_REG_ACCEL_CONFIG0, val);
+		if (ret)
+			return ret;
+		oldconf->fs = conf->fs;
+		oldconf->odr = conf->odr;
+	}
+
+	/* set GYRO_ACCEL_CONFIG0 register (accel filter) */
+	if (conf->filter != oldconf->filter) {
+		val = INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(conf->filter) |
+		      INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(st->conf.gyro.filter);
+		ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_ACCEL_CONFIG0, val);
+		if (ret)
+			return ret;
+		oldconf->filter = conf->filter;
+	}
+
+	/* set PWR_MGMT0 register (accel sensor mode) */
+	return inv_icm42600_set_pwr_mgmt0(st, st->conf.gyro.mode, conf->mode,
+					  st->conf.temp_en, sleep_ms);
+}
+
+int inv_icm42600_set_gyro_conf(struct inv_icm42600_state *st,
+			       struct inv_icm42600_sensor_conf *conf,
+			       unsigned int *sleep_ms)
+{
+	struct inv_icm42600_sensor_conf *oldconf = &st->conf.gyro;
+	unsigned int val;
+	int ret;
+
+	/* sanitize missing values with current values */
+	if (conf->mode < 0)
+		conf->mode = oldconf->mode;
+	if (conf->fs < 0)
+		conf->fs = oldconf->fs;
+	if (conf->odr < 0)
+		conf->odr = oldconf->odr;
+	if (conf->filter < 0)
+		conf->filter = oldconf->filter;
+
+	/* set GYRO_CONFIG0 register (gyro fullscale & odr) */
+	if (conf->fs != oldconf->fs || conf->odr != oldconf->odr) {
+		val = INV_ICM42600_GYRO_CONFIG0_FS(conf->fs) |
+		      INV_ICM42600_GYRO_CONFIG0_ODR(conf->odr);
+		ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_CONFIG0, val);
+		if (ret)
+			return ret;
+		oldconf->fs = conf->fs;
+		oldconf->odr = conf->odr;
+	}
+
+	/* set GYRO_ACCEL_CONFIG0 register (gyro filter) */
+	if (conf->filter != oldconf->filter) {
+		val = INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(st->conf.accel.filter) |
+		      INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(conf->filter);
+		ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_ACCEL_CONFIG0, val);
+		if (ret)
+			return ret;
+		oldconf->filter = conf->filter;
+	}
+
+	/* set PWR_MGMT0 register (gyro sensor mode) */
+	return inv_icm42600_set_pwr_mgmt0(st, conf->mode, st->conf.accel.mode,
+					  st->conf.temp_en, sleep_ms);
+
+	return 0;
+}
+
+int inv_icm42600_set_temp_conf(struct inv_icm42600_state *st, bool enable,
+			       unsigned int *sleep_ms)
+{
+	return inv_icm42600_set_pwr_mgmt0(st, st->conf.gyro.mode,
+					  st->conf.accel.mode, enable,
+					  sleep_ms);
+}
+
+int inv_icm42600_debugfs_reg(struct iio_dev *indio_dev, unsigned int reg,
+			     unsigned int writeval, unsigned int *readval)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	if (readval)
+		ret = regmap_read(st->map, reg, readval);
+	else
+		ret = regmap_write(st->map, reg, writeval);
+
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int inv_icm42600_set_conf(struct inv_icm42600_state *st,
+				 const struct inv_icm42600_conf *conf)
+{
+	unsigned int val;
+	int ret;
+
+	/* set PWR_MGMT0 register (gyro & accel sensor mode, temp enabled) */
+	val = INV_ICM42600_PWR_MGMT0_GYRO(conf->gyro.mode) |
+	      INV_ICM42600_PWR_MGMT0_ACCEL(conf->accel.mode);
+	if (!conf->temp_en)
+		val |= INV_ICM42600_PWR_MGMT0_TEMP_DIS;
+	ret = regmap_write(st->map, INV_ICM42600_REG_PWR_MGMT0, val);
+	if (ret)
+		return ret;
+
+	/* set GYRO_CONFIG0 register (gyro fullscale & odr) */
+	val = INV_ICM42600_GYRO_CONFIG0_FS(conf->gyro.fs) |
+	      INV_ICM42600_GYRO_CONFIG0_ODR(conf->gyro.odr);
+	ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_CONFIG0, val);
+	if (ret)
+		return ret;
+
+	/* set ACCEL_CONFIG0 register (accel fullscale & odr) */
+	val = INV_ICM42600_ACCEL_CONFIG0_FS(conf->accel.fs) |
+	      INV_ICM42600_ACCEL_CONFIG0_ODR(conf->accel.odr);
+	ret = regmap_write(st->map, INV_ICM42600_REG_ACCEL_CONFIG0, val);
+	if (ret)
+		return ret;
+
+	/* set GYRO_ACCEL_CONFIG0 register (gyro & accel filters) */
+	val = INV_ICM42600_GYRO_ACCEL_CONFIG0_ACCEL_FILT(conf->accel.filter) |
+	      INV_ICM42600_GYRO_ACCEL_CONFIG0_GYRO_FILT(conf->gyro.filter);
+	ret = regmap_write(st->map, INV_ICM42600_REG_GYRO_ACCEL_CONFIG0, val);
+	if (ret)
+		return ret;
+
+	/* update internal conf */
+	st->conf = *conf;
+
+	return 0;
+}
+
+/**
+ *  inv_icm42600_setup() - check and setup chip
+ *  @st:	driver internal state
+ *  @bus_setup:	callback for setting up bus specific registers
+ *
+ *  Returns 0 on success, a negative error code otherwise.
+ */
+static int inv_icm42600_setup(struct inv_icm42600_state *st,
+			      inv_icm42600_bus_setup bus_setup)
+{
+	const struct inv_icm42600_hw *hw = &inv_icm42600_hw[st->chip];
+	const struct device *dev = regmap_get_device(st->map);
+	unsigned int val;
+	int ret;
+
+	/* check chip self-identification value */
+	ret = regmap_read(st->map, INV_ICM42600_REG_WHOAMI, &val);
+	if (ret)
+		return ret;
+	if (val != hw->whoami) {
+		dev_err(dev, "invalid whoami %#02x expected %#02x (%s)\n",
+			val, hw->whoami, hw->name);
+		return -ENODEV;
+	}
+	st->name = hw->name;
+
+	/* reset to make sure previous state are not there */
+	ret = regmap_write(st->map, INV_ICM42600_REG_DEVICE_CONFIG,
+			   INV_ICM42600_DEVICE_CONFIG_SOFT_RESET);
+	if (ret)
+		return ret;
+	msleep(INV_ICM42600_RESET_TIME_MS);
+
+	ret = regmap_read(st->map, INV_ICM42600_REG_INT_STATUS, &val);
+	if (ret)
+		return ret;
+	if (!(val & INV_ICM42600_INT_STATUS_RESET_DONE)) {
+		dev_err(dev, "reset error, reset done bit not set\n");
+		return -ENODEV;
+	}
+
+	/* set chip bus configuration */
+	ret = bus_setup(st);
+	if (ret)
+		return ret;
+
+	/* sensor data in big-endian (default) */
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG0,
+				 INV_ICM42600_INTF_CONFIG0_SENSOR_DATA_ENDIAN,
+				 INV_ICM42600_INTF_CONFIG0_SENSOR_DATA_ENDIAN);
+	if (ret)
+		return ret;
+
+	return inv_icm42600_set_conf(st, hw->conf);
+}
+
+static irqreturn_t inv_icm42600_irq_timestamp(int irq, void *_data)
+{
+	struct inv_icm42600_state *st = _data;
+
+	st->timestamp.gyro = iio_get_time_ns(st->indio_gyro);
+	st->timestamp.accel = iio_get_time_ns(st->indio_accel);
+
+	return IRQ_WAKE_THREAD;
+}
+
+static irqreturn_t inv_icm42600_irq_handler(int irq, void *_data)
+{
+	struct inv_icm42600_state *st = _data;
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int status;
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = regmap_read(st->map, INV_ICM42600_REG_INT_STATUS, &status);
+	if (ret)
+		goto out_unlock;
+
+	/* FIFO full */
+	if (status & INV_ICM42600_INT_STATUS_FIFO_FULL)
+		dev_warn(dev, "FIFO full data lost!\n");
+
+	/* FIFO threshold reached */
+	if (status & INV_ICM42600_INT_STATUS_FIFO_THS) {
+		ret = inv_icm42600_buffer_fifo_read(st, 0);
+		if (ret) {
+			dev_err(dev, "FIFO read error %d\n", ret);
+			goto out_unlock;
+		}
+		ret = inv_icm42600_buffer_fifo_parse(st);
+		if (ret)
+			dev_err(dev, "FIFO parsing error %d\n", ret);
+	}
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	return IRQ_HANDLED;
+}
+
+/**
+ * inv_icm42600_irq_init() - initialize int pin and interrupt handler
+ * @st:		driver internal state
+ * @irq:	irq number
+ * @irq_type:	irq trigger type
+ * @open_drain:	true if irq is open drain, false for push-pull
+ *
+ * Returns 0 on success, a negative error code otherwise.
+ */
+static int inv_icm42600_irq_init(struct inv_icm42600_state *st, int irq,
+				 int irq_type, bool open_drain)
+{
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int val;
+	int ret;
+
+	/* configure INT1 interrupt: default is active low on edge */
+	switch (irq_type) {
+	case IRQF_TRIGGER_RISING:
+	case IRQF_TRIGGER_HIGH:
+		val = INV_ICM42600_INT_CONFIG_INT1_ACTIVE_HIGH;
+		break;
+	default:
+		val = INV_ICM42600_INT_CONFIG_INT1_ACTIVE_LOW;
+		break;
+	}
+
+	switch (irq_type) {
+	case IRQF_TRIGGER_LOW:
+	case IRQF_TRIGGER_HIGH:
+		val |= INV_ICM42600_INT_CONFIG_INT1_LATCHED;
+		break;
+	default:
+		break;
+	}
+
+	if (!open_drain)
+		val |= INV_ICM42600_INT_CONFIG_INT1_PUSH_PULL;
+
+	ret = regmap_write(st->map, INV_ICM42600_REG_INT_CONFIG, val);
+	if (ret)
+		return ret;
+
+	/* Deassert async reset for proper INT pin operation (cf datasheet) */
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INT_CONFIG1,
+				 INV_ICM42600_INT_CONFIG1_ASYNC_RESET, 0);
+	if (ret)
+		return ret;
+
+	return devm_request_threaded_irq(dev, irq, inv_icm42600_irq_timestamp,
+					 inv_icm42600_irq_handler, irq_type,
+					 "inv_icm42600", st);
+}
+
+static int inv_icm42600_enable_regulator_vddio(struct inv_icm42600_state *st)
+{
+	int ret;
+
+	ret = regulator_enable(st->vddio_supply);
+	if (ret)
+		return ret;
+
+	/* wait a little for supply ramp */
+	usleep_range(3000, 4000);
+
+	return 0;
+}
+
+static void inv_icm42600_disable_vdd_reg(void *_data)
+{
+	struct inv_icm42600_state *st = _data;
+	const struct device *dev = regmap_get_device(st->map);
+	int ret;
+
+	ret = regulator_disable(st->vdd_supply);
+	if (ret)
+		dev_err(dev, "failed to disable vdd error %d\n", ret);
+}
+
+static void inv_icm42600_disable_vddio_reg(void *_data)
+{
+	struct inv_icm42600_state *st = _data;
+	const struct device *dev = regmap_get_device(st->map);
+	int ret;
+
+	ret = regulator_disable(st->vddio_supply);
+	if (ret)
+		dev_err(dev, "failed to disable vddio error %d\n", ret);
+}
+
+static void inv_icm42600_disable_pm(void *_data)
+{
+	struct device *dev = _data;
+
+	pm_runtime_put_sync(dev);
+	pm_runtime_disable(dev);
+}
+
+int inv_icm42600_core_probe(struct regmap *regmap, int chip, int irq,
+			    inv_icm42600_bus_setup bus_setup)
+{
+	struct device *dev = regmap_get_device(regmap);
+	struct inv_icm42600_state *st;
+	struct irq_data *irq_desc;
+	int irq_type;
+	bool open_drain;
+	int ret;
+
+	if (chip <= INV_CHIP_INVALID || chip >= INV_CHIP_NB) {
+		dev_err(dev, "invalid chip = %d\n", chip);
+		return -ENODEV;
+	}
+
+	/* get irq properties, set trigger falling by default */
+	irq_desc = irq_get_irq_data(irq);
+	if (!irq_desc) {
+		dev_err(dev, "could not find IRQ %d\n", irq);
+		return -EINVAL;
+	}
+
+	irq_type = irqd_get_trigger_type(irq_desc);
+	if (!irq_type)
+		irq_type = IRQF_TRIGGER_FALLING;
+
+	open_drain = device_property_read_bool(dev, "drive-open-drain");
+
+	st = devm_kzalloc(dev, sizeof(*st), GFP_KERNEL);
+	if (!st)
+		return -ENOMEM;
+
+	dev_set_drvdata(dev, st);
+	mutex_init(&st->lock);
+	st->chip = chip;
+	st->map = regmap;
+
+	ret = iio_read_mount_matrix(dev, &st->orientation);
+	if (ret) {
+		dev_err(dev, "failed to retrieve mounting matrix %d\n", ret);
+		return ret;
+	}
+
+	st->vdd_supply = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(st->vdd_supply))
+		return PTR_ERR(st->vdd_supply);
+
+	st->vddio_supply = devm_regulator_get(dev, "vddio");
+	if (IS_ERR(st->vddio_supply))
+		return PTR_ERR(st->vddio_supply);
+
+	ret = regulator_enable(st->vdd_supply);
+	if (ret)
+		return ret;
+	msleep(INV_ICM42600_POWER_UP_TIME_MS);
+
+	ret = devm_add_action_or_reset(dev, inv_icm42600_disable_vdd_reg, st);
+	if (ret)
+		return ret;
+
+	ret = inv_icm42600_enable_regulator_vddio(st);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, inv_icm42600_disable_vddio_reg, st);
+	if (ret)
+		return ret;
+
+	/* setup chip registers */
+	ret = inv_icm42600_setup(st, bus_setup);
+	if (ret)
+		return ret;
+
+	ret = inv_icm42600_timestamp_setup(st);
+	if (ret)
+		return ret;
+
+	ret = inv_icm42600_buffer_init(st);
+	if (ret)
+		return ret;
+
+	st->indio_gyro = inv_icm42600_gyro_init(st);
+	if (IS_ERR(st->indio_gyro))
+		return PTR_ERR(st->indio_gyro);
+
+	st->indio_accel = inv_icm42600_accel_init(st);
+	if (IS_ERR(st->indio_accel))
+		return PTR_ERR(st->indio_accel);
+
+	ret = inv_icm42600_irq_init(st, irq, irq_type, open_drain);
+	if (ret)
+		return ret;
+
+	/* setup runtime power management */
+	ret = pm_runtime_set_active(dev);
+	if (ret)
+		return ret;
+	pm_runtime_get_noresume(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_set_autosuspend_delay(dev, INV_ICM42600_SUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_put(dev);
+
+	return devm_add_action_or_reset(dev, inv_icm42600_disable_pm, dev);
+}
+EXPORT_SYMBOL_GPL(inv_icm42600_core_probe);
+
+/*
+ * Suspend saves sensors state and turns everything off.
+ * Check first if runtime suspend has not already done the job.
+ */
+static int __maybe_unused inv_icm42600_suspend(struct device *dev)
+{
+	struct inv_icm42600_state *st = dev_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	st->suspended.gyro = st->conf.gyro.mode;
+	st->suspended.accel = st->conf.accel.mode;
+	st->suspended.temp = st->conf.temp_en;
+	if (pm_runtime_suspended(dev)) {
+		ret = 0;
+		goto out_unlock;
+	}
+
+	/* disable FIFO data streaming */
+	if (st->fifo.on) {
+		ret = regmap_write(st->map, INV_ICM42600_REG_FIFO_CONFIG,
+				   INV_ICM42600_FIFO_CONFIG_BYPASS);
+		if (ret)
+			goto out_unlock;
+	}
+
+	ret = inv_icm42600_set_pwr_mgmt0(st, INV_ICM42600_SENSOR_MODE_OFF,
+					 INV_ICM42600_SENSOR_MODE_OFF, false,
+					 NULL);
+	if (ret)
+		goto out_unlock;
+
+	regulator_disable(st->vddio_supply);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+/*
+ * System resume gets the system back on and restores the sensors state.
+ * Manually put runtime power management in system active state.
+ */
+static int __maybe_unused inv_icm42600_resume(struct device *dev)
+{
+	struct inv_icm42600_state *st = dev_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_enable_regulator_vddio(st);
+	if (ret)
+		goto out_unlock;
+
+	pm_runtime_disable(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	/* restore sensors state */
+	ret = inv_icm42600_set_pwr_mgmt0(st, st->suspended.gyro,
+					 st->suspended.accel,
+					 st->suspended.temp, NULL);
+	if (ret)
+		goto out_unlock;
+
+	/* restore FIFO data streaming */
+	if (st->fifo.on)
+		ret = regmap_write(st->map, INV_ICM42600_REG_FIFO_CONFIG,
+				   INV_ICM42600_FIFO_CONFIG_STREAM);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+/* Runtime suspend will turn off sensors that are enabled by iio devices. */
+static int __maybe_unused inv_icm42600_runtime_suspend(struct device *dev)
+{
+	struct inv_icm42600_state *st = dev_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	/* disable all sensors */
+	ret = inv_icm42600_set_pwr_mgmt0(st, INV_ICM42600_SENSOR_MODE_OFF,
+					 INV_ICM42600_SENSOR_MODE_OFF, false,
+					 NULL);
+	if (ret)
+		goto error_unlock;
+
+	regulator_disable(st->vddio_supply);
+
+error_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+/* Sensors are enabled by iio devices, no need to turn them back on here. */
+static int __maybe_unused inv_icm42600_runtime_resume(struct device *dev)
+{
+	struct inv_icm42600_state *st = dev_get_drvdata(dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_enable_regulator_vddio(st);
+
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+const struct dev_pm_ops inv_icm42600_pm_ops = {
+	SET_SYSTEM_SLEEP_PM_OPS(inv_icm42600_suspend, inv_icm42600_resume)
+	SET_RUNTIME_PM_OPS(inv_icm42600_runtime_suspend,
+			   inv_icm42600_runtime_resume, NULL)
+};
+EXPORT_SYMBOL_GPL(inv_icm42600_pm_ops);
+
+MODULE_AUTHOR("InvenSense, Inc.");
+MODULE_DESCRIPTION("InvenSense ICM-426xx device driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
new file mode 100644
index 000000000000..9d94a8518e3c
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_gyro.c
@@ -0,0 +1,796 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/delay.h>
+#include <linux/math64.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/kfifo_buf.h>
+
+#include "inv_icm42600.h"
+#include "inv_icm42600_temp.h"
+#include "inv_icm42600_buffer.h"
+#include "inv_icm42600_timestamp.h"
+
+#define INV_ICM42600_GYRO_CHAN(_modifier, _index, _ext_info)		\
+	{								\
+		.type = IIO_ANGL_VEL,					\
+		.modified = 1,						\
+		.channel2 = _modifier,					\
+		.info_mask_separate =					\
+			BIT(IIO_CHAN_INFO_RAW) |			\
+			BIT(IIO_CHAN_INFO_CALIBBIAS),			\
+		.info_mask_shared_by_type =				\
+			BIT(IIO_CHAN_INFO_SCALE),			\
+		.info_mask_shared_by_type_available =			\
+			BIT(IIO_CHAN_INFO_SCALE) |			\
+			BIT(IIO_CHAN_INFO_CALIBBIAS),			\
+		.info_mask_shared_by_all =				\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+		.info_mask_shared_by_all_available =			\
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),			\
+		.scan_index = _index,					\
+		.scan_type = {						\
+			.sign = 's',					\
+			.realbits = 16,					\
+			.storagebits = 16,				\
+			.endianness = IIO_BE,				\
+		},							\
+		.ext_info = _ext_info,					\
+	}
+
+enum inv_icm42600_gyro_scan {
+	INV_ICM42600_GYRO_SCAN_X,
+	INV_ICM42600_GYRO_SCAN_Y,
+	INV_ICM42600_GYRO_SCAN_Z,
+	INV_ICM42600_GYRO_SCAN_TEMP,
+	INV_ICM42600_GYRO_SCAN_TIMESTAMP,
+};
+
+static const struct iio_chan_spec_ext_info inv_icm42600_gyro_ext_infos[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, inv_icm42600_get_mount_matrix),
+	{},
+};
+
+static const struct iio_chan_spec inv_icm42600_gyro_channels[] = {
+	INV_ICM42600_GYRO_CHAN(IIO_MOD_X, INV_ICM42600_GYRO_SCAN_X,
+			       inv_icm42600_gyro_ext_infos),
+	INV_ICM42600_GYRO_CHAN(IIO_MOD_Y, INV_ICM42600_GYRO_SCAN_Y,
+			       inv_icm42600_gyro_ext_infos),
+	INV_ICM42600_GYRO_CHAN(IIO_MOD_Z, INV_ICM42600_GYRO_SCAN_Z,
+			       inv_icm42600_gyro_ext_infos),
+	INV_ICM42600_TEMP_CHAN(INV_ICM42600_GYRO_SCAN_TEMP),
+	IIO_CHAN_SOFT_TIMESTAMP(INV_ICM42600_GYRO_SCAN_TIMESTAMP),
+};
+
+/*
+ * IIO buffer data: size must be a power of 2 and timestamp aligned
+ * 16 bytes: 6 bytes angular velocity, 2 bytes temperature, 8 bytes timestamp
+ */
+struct inv_icm42600_gyro_buffer {
+	struct inv_icm42600_fifo_sensor_data gyro;
+	int16_t temp;
+	int64_t timestamp __aligned(8);
+};
+
+#define INV_ICM42600_SCAN_MASK_GYRO_3AXIS				\
+	(BIT(INV_ICM42600_GYRO_SCAN_X) |				\
+	BIT(INV_ICM42600_GYRO_SCAN_Y) |					\
+	BIT(INV_ICM42600_GYRO_SCAN_Z))
+
+#define INV_ICM42600_SCAN_MASK_TEMP	BIT(INV_ICM42600_GYRO_SCAN_TEMP)
+
+static const unsigned long inv_icm42600_gyro_scan_masks[] = {
+	/* 3-axis gyro + temperature */
+	INV_ICM42600_SCAN_MASK_GYRO_3AXIS | INV_ICM42600_SCAN_MASK_TEMP,
+	0,
+};
+
+/* enable gyroscope sensor and FIFO write */
+static int inv_icm42600_gyro_update_scan_mode(struct iio_dev *indio_dev,
+					      const unsigned long *scan_mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_timestamp *ts = iio_priv(indio_dev);
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	unsigned int fifo_en = 0;
+	unsigned int sleep_gyro = 0;
+	unsigned int sleep_temp = 0;
+	unsigned int sleep;
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	if (*scan_mask & INV_ICM42600_SCAN_MASK_TEMP) {
+		/* enable temp sensor */
+		ret = inv_icm42600_set_temp_conf(st, true, &sleep_temp);
+		if (ret)
+			goto out_unlock;
+		fifo_en |= INV_ICM42600_SENSOR_TEMP;
+	}
+
+	if (*scan_mask & INV_ICM42600_SCAN_MASK_GYRO_3AXIS) {
+		/* enable gyro sensor */
+		conf.mode = INV_ICM42600_SENSOR_MODE_LOW_NOISE;
+		ret = inv_icm42600_set_gyro_conf(st, &conf, &sleep_gyro);
+		if (ret)
+			goto out_unlock;
+		fifo_en |= INV_ICM42600_SENSOR_GYRO;
+	}
+
+	/* update data FIFO write */
+	inv_icm42600_timestamp_apply_odr(ts, 0, 0, 0);
+	ret = inv_icm42600_buffer_set_fifo_en(st, fifo_en | st->fifo.en);
+	if (ret)
+		goto out_unlock;
+
+	ret = inv_icm42600_buffer_update_watermark(st);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	/* sleep maximum required time */
+	if (sleep_gyro > sleep_temp)
+		sleep = sleep_gyro;
+	else
+		sleep = sleep_temp;
+	if (sleep)
+		msleep(sleep);
+	return ret;
+}
+
+static int inv_icm42600_gyro_read_sensor(struct inv_icm42600_state *st,
+					 struct iio_chan_spec const *chan,
+					 int16_t *val)
+{
+	struct device *dev = regmap_get_device(st->map);
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	unsigned int reg;
+	__be16 *data;
+	int ret;
+
+	if (chan->type != IIO_ANGL_VEL)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		reg = INV_ICM42600_REG_GYRO_DATA_X;
+		break;
+	case IIO_MOD_Y:
+		reg = INV_ICM42600_REG_GYRO_DATA_Y;
+		break;
+	case IIO_MOD_Z:
+		reg = INV_ICM42600_REG_GYRO_DATA_Z;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	/* enable gyro sensor */
+	conf.mode = INV_ICM42600_SENSOR_MODE_LOW_NOISE;
+	ret = inv_icm42600_set_gyro_conf(st, &conf, NULL);
+	if (ret)
+		goto exit;
+
+	/* read gyro register data */
+	data = (__be16 *)&st->buffer[0];
+	ret = regmap_bulk_read(st->map, reg, data, sizeof(*data));
+	if (ret)
+		goto exit;
+
+	*val = (int16_t)be16_to_cpup(data);
+	if (*val == INV_ICM42600_DATA_INVALID)
+		ret = -EINVAL;
+exit:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	return ret;
+}
+
+/* IIO format int + nano */
+static const int inv_icm42600_gyro_scale[] = {
+	/* +/- 2000dps => 0.001065264 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_2000DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_2000DPS + 1] = 1065264,
+	/* +/- 1000dps => 0.000532632 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_1000DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_1000DPS + 1] = 532632,
+	/* +/- 500dps => 0.000266316 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_500DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_500DPS + 1] = 266316,
+	/* +/- 250dps => 0.000133158 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_250DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_250DPS + 1] = 133158,
+	/* +/- 125dps => 0.000066579 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_125DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_125DPS + 1] = 66579,
+	/* +/- 62.5dps => 0.000033290 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_62_5DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_62_5DPS + 1] = 33290,
+	/* +/- 31.25dps => 0.000016645 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_31_25DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_31_25DPS + 1] = 16645,
+	/* +/- 15.625dps => 0.000008322 rad/s */
+	[2 * INV_ICM42600_GYRO_FS_15_625DPS] = 0,
+	[2 * INV_ICM42600_GYRO_FS_15_625DPS + 1] = 8322,
+};
+
+static int inv_icm42600_gyro_read_scale(struct inv_icm42600_state *st,
+					int *val, int *val2)
+{
+	unsigned int idx;
+
+	idx = st->conf.gyro.fs;
+
+	*val = inv_icm42600_gyro_scale[2 * idx];
+	*val2 = inv_icm42600_gyro_scale[2 * idx + 1];
+	return IIO_VAL_INT_PLUS_NANO;
+}
+
+static int inv_icm42600_gyro_write_scale(struct inv_icm42600_state *st,
+					 int val, int val2)
+{
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int idx;
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	int ret;
+
+	for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_gyro_scale); idx += 2) {
+		if (val == inv_icm42600_gyro_scale[idx] &&
+		    val2 == inv_icm42600_gyro_scale[idx + 1])
+			break;
+	}
+	if (idx >= ARRAY_SIZE(inv_icm42600_gyro_scale))
+		return -EINVAL;
+
+	conf.fs = idx / 2;
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_set_gyro_conf(st, &conf, NULL);
+
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+/* IIO format int + micro */
+static const int inv_icm42600_gyro_odr[] = {
+	/* 12.5Hz */
+	12, 500000,
+	/* 25Hz */
+	25, 0,
+	/* 50Hz */
+	50, 0,
+	/* 100Hz */
+	100, 0,
+	/* 200Hz */
+	200, 0,
+	/* 1kHz */
+	1000, 0,
+	/* 2kHz */
+	2000, 0,
+	/* 4kHz */
+	4000, 0,
+};
+
+static const int inv_icm42600_gyro_odr_conv[] = {
+	INV_ICM42600_ODR_12_5HZ,
+	INV_ICM42600_ODR_25HZ,
+	INV_ICM42600_ODR_50HZ,
+	INV_ICM42600_ODR_100HZ,
+	INV_ICM42600_ODR_200HZ,
+	INV_ICM42600_ODR_1KHZ_LN,
+	INV_ICM42600_ODR_2KHZ_LN,
+	INV_ICM42600_ODR_4KHZ_LN,
+};
+
+static int inv_icm42600_gyro_read_odr(struct inv_icm42600_state *st,
+				      int *val, int *val2)
+{
+	unsigned int odr;
+	unsigned int i;
+
+	odr = st->conf.gyro.odr;
+
+	for (i = 0; i < ARRAY_SIZE(inv_icm42600_gyro_odr_conv); ++i) {
+		if (inv_icm42600_gyro_odr_conv[i] == odr)
+			break;
+	}
+	if (i >= ARRAY_SIZE(inv_icm42600_gyro_odr_conv))
+		return -EINVAL;
+
+	*val = inv_icm42600_gyro_odr[2 * i];
+	*val2 = inv_icm42600_gyro_odr[2 * i + 1];
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int inv_icm42600_gyro_write_odr(struct iio_dev *indio_dev,
+				       int val, int val2)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_timestamp *ts = iio_priv(indio_dev);
+	struct device *dev = regmap_get_device(st->map);
+	unsigned int idx;
+	struct inv_icm42600_sensor_conf conf = INV_ICM42600_SENSOR_CONF_INIT;
+	int ret;
+
+	for (idx = 0; idx < ARRAY_SIZE(inv_icm42600_gyro_odr); idx += 2) {
+		if (val == inv_icm42600_gyro_odr[idx] &&
+		    val2 == inv_icm42600_gyro_odr[idx + 1])
+			break;
+	}
+	if (idx >= ARRAY_SIZE(inv_icm42600_gyro_odr))
+		return -EINVAL;
+
+	conf.odr = inv_icm42600_gyro_odr_conv[idx / 2];
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_timestamp_update_odr(ts, inv_icm42600_odr_to_period(conf.odr),
+						iio_buffer_enabled(indio_dev));
+	if (ret)
+		goto out_unlock;
+
+	ret = inv_icm42600_set_gyro_conf(st, &conf, NULL);
+	if (ret)
+		goto out_unlock;
+	inv_icm42600_buffer_update_fifo_period(st);
+	inv_icm42600_buffer_update_watermark(st);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+/*
+ * Calibration bias values, IIO range format int + nano.
+ * Value is limited to +/-64dps coded on 12 bits signed. Step is 1/32 dps.
+ */
+static int inv_icm42600_gyro_calibbias[] = {
+	-1, 117010721,		/* min: -1.117010721 rad/s */
+	0, 545415,		/* step: 0.000545415 rad/s */
+	1, 116465306,		/* max: 1.116465306 rad/s */
+};
+
+static int inv_icm42600_gyro_read_offset(struct inv_icm42600_state *st,
+					 struct iio_chan_spec const *chan,
+					 int *val, int *val2)
+{
+	struct device *dev = regmap_get_device(st->map);
+	int64_t val64;
+	int32_t bias;
+	unsigned int reg;
+	int16_t offset;
+	uint8_t data[2];
+	int ret;
+
+	if (chan->type != IIO_ANGL_VEL)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		reg = INV_ICM42600_REG_OFFSET_USER0;
+		break;
+	case IIO_MOD_Y:
+		reg = INV_ICM42600_REG_OFFSET_USER1;
+		break;
+	case IIO_MOD_Z:
+		reg = INV_ICM42600_REG_OFFSET_USER3;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = regmap_bulk_read(st->map, reg, st->buffer, sizeof(data));
+	memcpy(data, st->buffer, sizeof(data));
+
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	if (ret)
+		return ret;
+
+	/* 12 bits signed value */
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		offset = sign_extend32(((data[1] & 0x0F) << 8) | data[0], 11);
+		break;
+	case IIO_MOD_Y:
+		offset = sign_extend32(((data[0] & 0xF0) << 4) | data[1], 11);
+		break;
+	case IIO_MOD_Z:
+		offset = sign_extend32(((data[1] & 0x0F) << 8) | data[0], 11);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/*
+	 * convert raw offset to dps then to rad/s
+	 * 12 bits signed raw max 64 to dps: 64 / 2048
+	 * dps to rad: Pi / 180
+	 * result in nano (1000000000)
+	 * (offset * 64 * Pi * 1000000000) / (2048 * 180)
+	 */
+	val64 = (int64_t)offset * 64LL * 3141592653LL;
+	/* for rounding, add + or - divisor (2048 * 180) divided by 2 */
+	if (val64 >= 0)
+		val64 += 2048 * 180 / 2;
+	else
+		val64 -= 2048 * 180 / 2;
+	bias = div_s64(val64, 2048 * 180);
+	*val = bias / 1000000000L;
+	*val2 = bias % 1000000000L;
+
+	return IIO_VAL_INT_PLUS_NANO;
+}
+
+static int inv_icm42600_gyro_write_offset(struct inv_icm42600_state *st,
+					  struct iio_chan_spec const *chan,
+					  int val, int val2)
+{
+	struct device *dev = regmap_get_device(st->map);
+	int64_t val64, min, max;
+	unsigned int reg, regval;
+	int16_t offset;
+	int ret;
+
+	if (chan->type != IIO_ANGL_VEL)
+		return -EINVAL;
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		reg = INV_ICM42600_REG_OFFSET_USER0;
+		break;
+	case IIO_MOD_Y:
+		reg = INV_ICM42600_REG_OFFSET_USER1;
+		break;
+	case IIO_MOD_Z:
+		reg = INV_ICM42600_REG_OFFSET_USER3;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	/* inv_icm42600_gyro_calibbias: min - step - max in nano */
+	min = (int64_t)inv_icm42600_gyro_calibbias[0] * 1000000000LL +
+	      (int64_t)inv_icm42600_gyro_calibbias[1];
+	max = (int64_t)inv_icm42600_gyro_calibbias[4] * 1000000000LL +
+	      (int64_t)inv_icm42600_gyro_calibbias[5];
+	val64 = (int64_t)val * 1000000000LL + (int64_t)val2;
+	if (val64 < min || val64 > max)
+		return -EINVAL;
+
+	/*
+	 * convert rad/s to dps then to raw value
+	 * rad to dps: 180 / Pi
+	 * dps to raw 12 bits signed, max 64: 2048 / 64
+	 * val in nano (1000000000)
+	 * val * 180 * 2048 / (Pi * 1000000000 * 64)
+	 */
+	val64 = val64 * 180LL * 2048LL;
+	/* for rounding, add + or - divisor (3141592653 * 64) divided by 2 */
+	if (val64 >= 0)
+		val64 += 3141592653LL * 64LL / 2LL;
+	else
+		val64 -= 3141592653LL * 64LL / 2LL;
+	offset = div64_s64(val64, 3141592653LL * 64LL);
+
+	/* clamp value limited to 12 bits signed */
+	if (offset < -2048)
+		offset = -2048;
+	else if (offset > 2047)
+		offset = 2047;
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	switch (chan->channel2) {
+	case IIO_MOD_X:
+		/* OFFSET_USER1 register is shared */
+		ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER1,
+				  &regval);
+		if (ret)
+			goto out_unlock;
+		st->buffer[0] = offset & 0xFF;
+		st->buffer[1] = (regval & 0xF0) | ((offset & 0xF00) >> 8);
+		break;
+	case IIO_MOD_Y:
+		/* OFFSET_USER1 register is shared */
+		ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER1,
+				  &regval);
+		if (ret)
+			goto out_unlock;
+		st->buffer[0] = ((offset & 0xF00) >> 4) | (regval & 0x0F);
+		st->buffer[1] = offset & 0xFF;
+		break;
+	case IIO_MOD_Z:
+		/* OFFSET_USER4 register is shared */
+		ret = regmap_read(st->map, INV_ICM42600_REG_OFFSET_USER4,
+				  &regval);
+		if (ret)
+			goto out_unlock;
+		st->buffer[0] = offset & 0xFF;
+		st->buffer[1] = (regval & 0xF0) | ((offset & 0xF00) >> 8);
+		break;
+	default:
+		ret = -EINVAL;
+		goto out_unlock;
+	}
+
+	ret = regmap_bulk_write(st->map, reg, st->buffer, 2);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+	return ret;
+}
+
+static int inv_icm42600_gyro_read_raw(struct iio_dev *indio_dev,
+				      struct iio_chan_spec const *chan,
+				      int *val, int *val2, long mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int16_t data;
+	int ret;
+
+	switch (chan->type) {
+	case IIO_ANGL_VEL:
+		break;
+	case IIO_TEMP:
+		return inv_icm42600_temp_read_raw(indio_dev, chan, val, val2, mask);
+	default:
+		return -EINVAL;
+	}
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_gyro_read_sensor(st, chan, &data);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		*val = data;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		return inv_icm42600_gyro_read_scale(st, val, val2);
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return inv_icm42600_gyro_read_odr(st, val, val2);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return inv_icm42600_gyro_read_offset(st, chan, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_gyro_read_avail(struct iio_dev *indio_dev,
+					struct iio_chan_spec const *chan,
+					const int **vals,
+					int *type, int *length, long mask)
+{
+	if (chan->type != IIO_ANGL_VEL)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		*vals = inv_icm42600_gyro_scale;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		*length = ARRAY_SIZE(inv_icm42600_gyro_scale);
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = inv_icm42600_gyro_odr;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(inv_icm42600_gyro_odr);
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		*vals = inv_icm42600_gyro_calibbias;
+		*type = IIO_VAL_INT_PLUS_NANO;
+		return IIO_AVAIL_RANGE;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_gyro_write_raw(struct iio_dev *indio_dev,
+				       struct iio_chan_spec const *chan,
+				       int val, int val2, long mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	if (chan->type != IIO_ANGL_VEL)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_gyro_write_scale(st, val, val2);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return inv_icm42600_gyro_write_odr(indio_dev, val, val2);
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_gyro_write_offset(st, chan, val, val2);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_gyro_write_raw_get_fmt(struct iio_dev *indio_dev,
+					       struct iio_chan_spec const *chan,
+					       long mask)
+{
+	if (chan->type != IIO_ANGL_VEL)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		return IIO_VAL_INT_PLUS_NANO;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_CALIBBIAS:
+		return IIO_VAL_INT_PLUS_NANO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int inv_icm42600_gyro_hwfifo_set_watermark(struct iio_dev *indio_dev,
+						  unsigned int val)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	st->fifo.watermark.gyro = val;
+	ret = inv_icm42600_buffer_update_watermark(st);
+
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int inv_icm42600_gyro_hwfifo_flush(struct iio_dev *indio_dev,
+					  unsigned int count)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int ret;
+
+	if (count == 0)
+		return 0;
+
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_buffer_hwfifo_flush(st, count);
+	if (!ret)
+		ret = st->fifo.nb.gyro;
+
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static const struct iio_info inv_icm42600_gyro_info = {
+	.read_raw = inv_icm42600_gyro_read_raw,
+	.read_avail = inv_icm42600_gyro_read_avail,
+	.write_raw = inv_icm42600_gyro_write_raw,
+	.write_raw_get_fmt = inv_icm42600_gyro_write_raw_get_fmt,
+	.debugfs_reg_access = inv_icm42600_debugfs_reg,
+	.update_scan_mode = inv_icm42600_gyro_update_scan_mode,
+	.hwfifo_set_watermark = inv_icm42600_gyro_hwfifo_set_watermark,
+	.hwfifo_flush_to_buffer = inv_icm42600_gyro_hwfifo_flush,
+};
+
+struct iio_dev *inv_icm42600_gyro_init(struct inv_icm42600_state *st)
+{
+	struct device *dev = regmap_get_device(st->map);
+	const char *name;
+	struct inv_icm42600_timestamp *ts;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	name = devm_kasprintf(dev, GFP_KERNEL, "%s-gyro", st->name);
+	if (!name)
+		return ERR_PTR(-ENOMEM);
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*ts));
+	if (!indio_dev)
+		return ERR_PTR(-ENOMEM);
+
+	ts = iio_priv(indio_dev);
+	inv_icm42600_timestamp_init(ts, inv_icm42600_odr_to_period(st->conf.gyro.odr));
+
+	iio_device_set_drvdata(indio_dev, st);
+	indio_dev->name = name;
+	indio_dev->info = &inv_icm42600_gyro_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = inv_icm42600_gyro_channels;
+	indio_dev->num_channels = ARRAY_SIZE(inv_icm42600_gyro_channels);
+	indio_dev->available_scan_masks = inv_icm42600_gyro_scan_masks;
+	indio_dev->setup_ops = &inv_icm42600_buffer_ops;
+
+	ret = devm_iio_kfifo_buffer_setup(dev, indio_dev,
+					  &inv_icm42600_buffer_ops);
+	if (ret)
+		return ERR_PTR(ret);
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return indio_dev;
+}
+
+int inv_icm42600_gyro_parse_fifo(struct iio_dev *indio_dev)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	struct inv_icm42600_timestamp *ts = iio_priv(indio_dev);
+	ssize_t i, size;
+	unsigned int no;
+	const void *accel, *gyro, *timestamp;
+	const int8_t *temp;
+	unsigned int odr;
+	int64_t ts_val;
+	struct inv_icm42600_gyro_buffer buffer;
+
+	/* parse all fifo packets */
+	for (i = 0, no = 0; i < st->fifo.count; i += size, ++no) {
+		size = inv_icm42600_fifo_decode_packet(&st->fifo.data[i],
+				&accel, &gyro, &temp, &timestamp, &odr);
+		/* quit if error or FIFO is empty */
+		if (size <= 0)
+			return size;
+
+		/* skip packet if no gyro data or data is invalid */
+		if (gyro == NULL || !inv_icm42600_fifo_is_data_valid(gyro))
+			continue;
+
+		/* update odr */
+		if (odr & INV_ICM42600_SENSOR_GYRO)
+			inv_icm42600_timestamp_apply_odr(ts, st->fifo.period,
+							 st->fifo.nb.total, no);
+
+		/* buffer is copied to userspace, zeroing it to avoid any data leak */
+		memset(&buffer, 0, sizeof(buffer));
+		memcpy(&buffer.gyro, gyro, sizeof(buffer.gyro));
+		/* convert 8 bits FIFO temperature in high resolution format */
+		buffer.temp = temp ? (*temp * 64) : 0;
+		ts_val = inv_icm42600_timestamp_pop(ts);
+		iio_push_to_buffers_with_timestamp(indio_dev, &buffer, ts_val);
+	}
+
+	return 0;
+}
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c
new file mode 100644
index 000000000000..d4a692b838d0
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_i2c.c
@@ -0,0 +1,104 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 InvenSense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/property.h>
+
+#include "inv_icm42600.h"
+
+static int inv_icm42600_i2c_bus_setup(struct inv_icm42600_state *st)
+{
+	unsigned int mask, val;
+	int ret;
+
+	/*
+	 * setup interface registers
+	 * This register write to REG_INTF_CONFIG6 enables a spike filter that
+	 * is impacting the line and can prevent the I2C ACK to be seen by the
+	 * controller. So we don't test the return value.
+	 */
+	regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG6,
+			   INV_ICM42600_INTF_CONFIG6_MASK,
+			   INV_ICM42600_INTF_CONFIG6_I3C_EN);
+
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG4,
+				 INV_ICM42600_INTF_CONFIG4_I3C_BUS_ONLY, 0);
+	if (ret)
+		return ret;
+
+	/* set slew rates for I2C and SPI */
+	mask = INV_ICM42600_DRIVE_CONFIG_I2C_MASK |
+	       INV_ICM42600_DRIVE_CONFIG_SPI_MASK;
+	val = INV_ICM42600_DRIVE_CONFIG_I2C(INV_ICM42600_SLEW_RATE_12_36NS) |
+	      INV_ICM42600_DRIVE_CONFIG_SPI(INV_ICM42600_SLEW_RATE_12_36NS);
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_DRIVE_CONFIG,
+				 mask, val);
+	if (ret)
+		return ret;
+
+	/* disable SPI bus */
+	return regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG0,
+				  INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK,
+				  INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_SPI_DIS);
+}
+
+static int inv_icm42600_probe(struct i2c_client *client)
+{
+	const void *match;
+	enum inv_icm42600_chip chip;
+	struct regmap *regmap;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_I2C_BLOCK))
+		return -ENOTSUPP;
+
+	match = device_get_match_data(&client->dev);
+	if (!match)
+		return -EINVAL;
+	chip = (uintptr_t)match;
+
+	regmap = devm_regmap_init_i2c(client, &inv_icm42600_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	return inv_icm42600_core_probe(regmap, chip, client->irq,
+				       inv_icm42600_i2c_bus_setup);
+}
+
+static const struct of_device_id inv_icm42600_of_matches[] = {
+	{
+		.compatible = "invensense,icm42600",
+		.data = (void *)INV_CHIP_ICM42600,
+	}, {
+		.compatible = "invensense,icm42602",
+		.data = (void *)INV_CHIP_ICM42602,
+	}, {
+		.compatible = "invensense,icm42605",
+		.data = (void *)INV_CHIP_ICM42605,
+	}, {
+		.compatible = "invensense,icm42622",
+		.data = (void *)INV_CHIP_ICM42622,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, inv_icm42600_of_matches);
+
+static struct i2c_driver inv_icm42600_driver = {
+	.driver = {
+		.name = "inv-icm42600-i2c",
+		.of_match_table = inv_icm42600_of_matches,
+		.pm = &inv_icm42600_pm_ops,
+	},
+	.probe_new = inv_icm42600_probe,
+};
+module_i2c_driver(inv_icm42600_driver);
+
+MODULE_AUTHOR("InvenSense, Inc.");
+MODULE_DESCRIPTION("InvenSense ICM-426xx I2C driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
new file mode 100644
index 000000000000..e6305e5fa975
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_spi.c
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 InvenSense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/spi/spi.h>
+#include <linux/regmap.h>
+#include <linux/property.h>
+
+#include "inv_icm42600.h"
+
+static int inv_icm42600_spi_bus_setup(struct inv_icm42600_state *st)
+{
+	unsigned int mask, val;
+	int ret;
+
+	/* setup interface registers */
+	val = INV_ICM42600_INTF_CONFIG6_I3C_EN |
+	      INV_ICM42600_INTF_CONFIG6_I3C_SDR_EN |
+	      INV_ICM42600_INTF_CONFIG6_I3C_DDR_EN;
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG6,
+				 INV_ICM42600_INTF_CONFIG6_MASK, val);
+	if (ret)
+		return ret;
+
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG4,
+				 INV_ICM42600_INTF_CONFIG4_I3C_BUS_ONLY, 0);
+	if (ret)
+		return ret;
+
+	/* set slew rates for I2C and SPI */
+	mask = INV_ICM42600_DRIVE_CONFIG_I2C_MASK |
+	       INV_ICM42600_DRIVE_CONFIG_SPI_MASK;
+	val = INV_ICM42600_DRIVE_CONFIG_I2C(INV_ICM42600_SLEW_RATE_20_60NS) |
+	      INV_ICM42600_DRIVE_CONFIG_SPI(INV_ICM42600_SLEW_RATE_INF_2NS);
+	ret = regmap_update_bits(st->map, INV_ICM42600_REG_DRIVE_CONFIG,
+				 mask, val);
+	if (ret)
+		return ret;
+
+	/* disable i2c bus */
+	return regmap_update_bits(st->map, INV_ICM42600_REG_INTF_CONFIG0,
+				  INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_MASK,
+				  INV_ICM42600_INTF_CONFIG0_UI_SIFS_CFG_I2C_DIS);
+}
+
+static int inv_icm42600_probe(struct spi_device *spi)
+{
+	const void *match;
+	enum inv_icm42600_chip chip;
+	struct regmap *regmap;
+
+	match = device_get_match_data(&spi->dev);
+	if (!match)
+		return -EINVAL;
+	chip = (uintptr_t)match;
+
+	regmap = devm_regmap_init_spi(spi, &inv_icm42600_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	return inv_icm42600_core_probe(regmap, chip, spi->irq,
+				       inv_icm42600_spi_bus_setup);
+}
+
+static const struct of_device_id inv_icm42600_of_matches[] = {
+	{
+		.compatible = "invensense,icm42600",
+		.data = (void *)INV_CHIP_ICM42600,
+	}, {
+		.compatible = "invensense,icm42602",
+		.data = (void *)INV_CHIP_ICM42602,
+	}, {
+		.compatible = "invensense,icm42605",
+		.data = (void *)INV_CHIP_ICM42605,
+	}, {
+		.compatible = "invensense,icm42622",
+		.data = (void *)INV_CHIP_ICM42622,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, inv_icm42600_of_matches);
+
+static struct spi_driver inv_icm42600_driver = {
+	.driver = {
+		.name = "inv-icm42600-spi",
+		.of_match_table = inv_icm42600_of_matches,
+		.pm = &inv_icm42600_pm_ops,
+	},
+	.probe = inv_icm42600_probe,
+};
+module_spi_driver(inv_icm42600_driver);
+
+MODULE_AUTHOR("InvenSense, Inc.");
+MODULE_DESCRIPTION("InvenSense ICM-426xx SPI driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c
new file mode 100644
index 000000000000..213cce1c3111
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.c
@@ -0,0 +1,84 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/device.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+
+#include "inv_icm42600.h"
+#include "inv_icm42600_temp.h"
+
+static int inv_icm42600_temp_read(struct inv_icm42600_state *st, int16_t *temp)
+{
+	struct device *dev = regmap_get_device(st->map);
+	__be16 *raw;
+	int ret;
+
+	pm_runtime_get_sync(dev);
+	mutex_lock(&st->lock);
+
+	ret = inv_icm42600_set_temp_conf(st, true, NULL);
+	if (ret)
+		goto exit;
+
+	raw = (__be16 *)&st->buffer[0];
+	ret = regmap_bulk_read(st->map, INV_ICM42600_REG_TEMP_DATA, raw, sizeof(*raw));
+	if (ret)
+		goto exit;
+
+	*temp = (int16_t)be16_to_cpup(raw);
+	if (*temp == INV_ICM42600_DATA_INVALID)
+		ret = -EINVAL;
+
+exit:
+	mutex_unlock(&st->lock);
+	pm_runtime_mark_last_busy(dev);
+	pm_runtime_put_autosuspend(dev);
+
+	return ret;
+}
+
+int inv_icm42600_temp_read_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val, int *val2, long mask)
+{
+	struct inv_icm42600_state *st = iio_device_get_drvdata(indio_dev);
+	int16_t temp;
+	int ret;
+
+	if (chan->type != IIO_TEMP)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		ret = inv_icm42600_temp_read(st, &temp);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		*val = temp;
+		return IIO_VAL_INT;
+	/*
+	 * T°C = (temp / 132.48) + 25
+	 * Tm°C = 1000 * ((temp * 100 / 13248) + 25)
+	 * scale: 100000 / 13248 ~= 7.548309
+	 * offset: 25000
+	 */
+	case IIO_CHAN_INFO_SCALE:
+		*val = 7;
+		*val2 = 548309;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = 25000;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.h b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.h
new file mode 100644
index 000000000000..3941186512fb
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_temp.h
@@ -0,0 +1,30 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#ifndef INV_ICM42600_TEMP_H_
+#define INV_ICM42600_TEMP_H_
+
+#include <linux/iio/iio.h>
+
+#define INV_ICM42600_TEMP_CHAN(_index)					\
+	{								\
+		.type = IIO_TEMP,					\
+		.info_mask_separate =					\
+			BIT(IIO_CHAN_INFO_RAW) |			\
+			BIT(IIO_CHAN_INFO_OFFSET) |			\
+			BIT(IIO_CHAN_INFO_SCALE),			\
+		.scan_index = _index,					\
+		.scan_type = {						\
+			.sign = 's',					\
+			.realbits = 16,					\
+			.storagebits = 16,				\
+		},							\
+	}
+
+int inv_icm42600_temp_read_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val, int *val2, long mask);
+
+#endif
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.c b/drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.c
new file mode 100644
index 000000000000..7f2dc41f807b
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.c
@@ -0,0 +1,195 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#include <linux/kernel.h>
+#include <linux/regmap.h>
+#include <linux/math64.h>
+
+#include "inv_icm42600.h"
+#include "inv_icm42600_timestamp.h"
+
+/* internal chip period is 32kHz, 31250ns */
+#define INV_ICM42600_TIMESTAMP_PERIOD		31250
+/* allow a jitter of +/- 2% */
+#define INV_ICM42600_TIMESTAMP_JITTER		2
+/* compute min and max periods accepted */
+#define INV_ICM42600_TIMESTAMP_MIN_PERIOD(_p)		\
+	(((_p) * (100 - INV_ICM42600_TIMESTAMP_JITTER)) / 100)
+#define INV_ICM42600_TIMESTAMP_MAX_PERIOD(_p)		\
+	(((_p) * (100 + INV_ICM42600_TIMESTAMP_JITTER)) / 100)
+
+/* Add a new value inside an accumulator and update the estimate value */
+static void inv_update_acc(struct inv_icm42600_timestamp_acc *acc, uint32_t val)
+{
+	uint64_t sum = 0;
+	size_t i;
+
+	acc->values[acc->idx++] = val;
+	if (acc->idx >= ARRAY_SIZE(acc->values))
+		acc->idx = 0;
+
+	/* compute the mean of all stored values, use 0 as empty slot */
+	for (i = 0; i < ARRAY_SIZE(acc->values); ++i) {
+		if (acc->values[i] == 0)
+			break;
+		sum += acc->values[i];
+	}
+
+	acc->val = div_u64(sum, i);
+}
+
+void inv_icm42600_timestamp_init(struct inv_icm42600_timestamp *ts,
+				 uint32_t period)
+{
+	/* initial odr for sensor after reset is 1kHz */
+	const uint32_t default_period = 1000000;
+
+	/* current multiplier and period values after reset */
+	ts->mult = default_period / INV_ICM42600_TIMESTAMP_PERIOD;
+	ts->period = default_period;
+	/* new set multiplier is the one from chip initialization */
+	ts->new_mult = period / INV_ICM42600_TIMESTAMP_PERIOD;
+
+	/* use theoretical value for chip period */
+	inv_update_acc(&ts->chip_period, INV_ICM42600_TIMESTAMP_PERIOD);
+}
+
+int inv_icm42600_timestamp_setup(struct inv_icm42600_state *st)
+{
+	unsigned int val;
+
+	/* enable timestamp register */
+	val = INV_ICM42600_TMST_CONFIG_TMST_TO_REGS_EN |
+	      INV_ICM42600_TMST_CONFIG_TMST_EN;
+	return regmap_update_bits(st->map, INV_ICM42600_REG_TMST_CONFIG,
+				  INV_ICM42600_TMST_CONFIG_MASK, val);
+}
+
+int inv_icm42600_timestamp_update_odr(struct inv_icm42600_timestamp *ts,
+				      uint32_t period, bool fifo)
+{
+	/* when FIFO is on, prevent odr change if one is already pending */
+	if (fifo && ts->new_mult != 0)
+		return -EAGAIN;
+
+	ts->new_mult = period / INV_ICM42600_TIMESTAMP_PERIOD;
+
+	return 0;
+}
+
+static bool inv_validate_period(uint32_t period, uint32_t mult)
+{
+	const uint32_t chip_period = INV_ICM42600_TIMESTAMP_PERIOD;
+	uint32_t period_min, period_max;
+
+	/* check that period is acceptable */
+	period_min = INV_ICM42600_TIMESTAMP_MIN_PERIOD(chip_period) * mult;
+	period_max = INV_ICM42600_TIMESTAMP_MAX_PERIOD(chip_period) * mult;
+	if (period > period_min && period < period_max)
+		return true;
+	else
+		return false;
+}
+
+static bool inv_compute_chip_period(struct inv_icm42600_timestamp *ts,
+				    uint32_t mult, uint32_t period)
+{
+	uint32_t new_chip_period;
+
+	if (!inv_validate_period(period, mult))
+		return false;
+
+	/* update chip internal period estimation */
+	new_chip_period = period / mult;
+	inv_update_acc(&ts->chip_period, new_chip_period);
+
+	return true;
+}
+
+void inv_icm42600_timestamp_interrupt(struct inv_icm42600_timestamp *ts,
+				      uint32_t fifo_period, size_t fifo_nb,
+				      size_t sensor_nb, int64_t timestamp)
+{
+	struct inv_icm42600_timestamp_interval *it;
+	int64_t delta, interval;
+	const uint32_t fifo_mult = fifo_period / INV_ICM42600_TIMESTAMP_PERIOD;
+	uint32_t period = ts->period;
+	int32_t m;
+	bool valid = false;
+
+	if (fifo_nb == 0)
+		return;
+
+	/* update interrupt timestamp and compute chip and sensor periods */
+	it = &ts->it;
+	it->lo = it->up;
+	it->up = timestamp;
+	delta = it->up - it->lo;
+	if (it->lo != 0) {
+		/* compute period: delta time divided by number of samples */
+		period = div_s64(delta, fifo_nb);
+		valid = inv_compute_chip_period(ts, fifo_mult, period);
+		/* update sensor period if chip internal period is updated */
+		if (valid)
+			ts->period = ts->mult * ts->chip_period.val;
+	}
+
+	/* no previous data, compute theoritical value from interrupt */
+	if (ts->timestamp == 0) {
+		/* elapsed time: sensor period * sensor samples number */
+		interval = (int64_t)ts->period * (int64_t)sensor_nb;
+		ts->timestamp = it->up - interval;
+		return;
+	}
+
+	/* if interrupt interval is valid, sync with interrupt timestamp */
+	if (valid) {
+		/* compute measured fifo_period */
+		fifo_period = fifo_mult * ts->chip_period.val;
+		/* delta time between last sample and last interrupt */
+		delta = it->lo - ts->timestamp;
+		/* if there are multiple samples, go back to first one */
+		while (delta >= (fifo_period * 3 / 2))
+			delta -= fifo_period;
+		/* compute maximal adjustment value */
+		m = INV_ICM42600_TIMESTAMP_MAX_PERIOD(ts->period) - ts->period;
+		if (delta > m)
+			delta = m;
+		else if (delta < -m)
+			delta = -m;
+		ts->timestamp += delta;
+	}
+}
+
+void inv_icm42600_timestamp_apply_odr(struct inv_icm42600_timestamp *ts,
+				      uint32_t fifo_period, size_t fifo_nb,
+				      unsigned int fifo_no)
+{
+	int64_t interval;
+	uint32_t fifo_mult;
+
+	if (ts->new_mult == 0)
+		return;
+
+	/* update to new multiplier and update period */
+	ts->mult = ts->new_mult;
+	ts->new_mult = 0;
+	ts->period = ts->mult * ts->chip_period.val;
+
+	/*
+	 * After ODR change the time interval with the previous sample is
+	 * undertermined (depends when the change occures). So we compute the
+	 * timestamp from the current interrupt using the new FIFO period, the
+	 * total number of samples and the current sample numero.
+	 */
+	if (ts->timestamp != 0) {
+		/* compute measured fifo period */
+		fifo_mult = fifo_period / INV_ICM42600_TIMESTAMP_PERIOD;
+		fifo_period = fifo_mult * ts->chip_period.val;
+		/* computes time interval between interrupt and this sample */
+		interval = (int64_t)(fifo_nb - fifo_no) * (int64_t)fifo_period;
+		ts->timestamp = ts->it.up - interval;
+	}
+}
diff --git a/drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.h b/drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.h
new file mode 100644
index 000000000000..4e4f331d4fe4
--- /dev/null
+++ b/drivers/iio/imu/inv_icm42600/inv_icm42600_timestamp.h
@@ -0,0 +1,85 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Copyright (C) 2020 Invensense, Inc.
+ */
+
+#ifndef INV_ICM42600_TIMESTAMP_H_
+#define INV_ICM42600_TIMESTAMP_H_
+
+#include <linux/kernel.h>
+
+struct inv_icm42600_state;
+
+/**
+ * struct inv_icm42600_timestamp_interval - timestamps interval
+ * @lo:	interval lower bound
+ * @up:	interval upper bound
+ */
+struct inv_icm42600_timestamp_interval {
+	int64_t lo;
+	int64_t up;
+};
+
+/**
+ * struct inv_icm42600_timestamp_acc - accumulator for computing an estimation
+ * @val:	current estimation of the value, the mean of all values
+ * @idx:	current index of the next free place in values table
+ * @values:	table of all measured values, use for computing the mean
+ */
+struct inv_icm42600_timestamp_acc {
+	uint32_t val;
+	size_t idx;
+	uint32_t values[32];
+};
+
+/**
+ * struct inv_icm42600_timestamp - timestamp management states
+ * @it:			interrupts interval timestamps
+ * @timestamp:		store last timestamp for computing next data timestamp
+ * @mult:		current internal period multiplier
+ * @new_mult:		new set internal period multiplier (not yet effective)
+ * @period:		measured current period of the sensor
+ * @chip_period:	accumulator for computing internal chip period
+ */
+struct inv_icm42600_timestamp {
+	struct inv_icm42600_timestamp_interval it;
+	int64_t timestamp;
+	uint32_t mult;
+	uint32_t new_mult;
+	uint32_t period;
+	struct inv_icm42600_timestamp_acc chip_period;
+};
+
+void inv_icm42600_timestamp_init(struct inv_icm42600_timestamp *ts,
+				 uint32_t period);
+
+int inv_icm42600_timestamp_setup(struct inv_icm42600_state *st);
+
+int inv_icm42600_timestamp_update_odr(struct inv_icm42600_timestamp *ts,
+				      uint32_t period, bool fifo);
+
+void inv_icm42600_timestamp_interrupt(struct inv_icm42600_timestamp *ts,
+				      uint32_t fifo_period, size_t fifo_nb,
+				      size_t sensor_nb, int64_t timestamp);
+
+static inline int64_t
+inv_icm42600_timestamp_pop(struct inv_icm42600_timestamp *ts)
+{
+	ts->timestamp += ts->period;
+	return ts->timestamp;
+}
+
+void inv_icm42600_timestamp_apply_odr(struct inv_icm42600_timestamp *ts,
+				      uint32_t fifo_period, size_t fifo_nb,
+				      unsigned int fifo_no);
+
+static inline void
+inv_icm42600_timestamp_reset(struct inv_icm42600_timestamp *ts)
+{
+	const struct inv_icm42600_timestamp_interval interval_init = {0LL, 0LL};
+
+	ts->it = interval_init;
+	ts->timestamp = 0;
+}
+
+#endif
diff --git a/drivers/iio/imu/inv_mpu6050/Kconfig b/drivers/iio/imu/inv_mpu6050/Kconfig
index 017bc0fcc365..3636b1bc90f1 100644
--- a/drivers/iio/imu/inv_mpu6050/Kconfig
+++ b/drivers/iio/imu/inv_mpu6050/Kconfig
@@ -15,9 +15,9 @@ config INV_MPU6050_I2C
 	select INV_MPU6050_IIO
 	select REGMAP_I2C
 	help
-	  This driver supports the Invensense MPU6050/6500/6515,
-	  MPU9150/9250/9255 and ICM20608/20602 motion tracking devices
-	  over I2C.
+	  This driver supports the Invensense MPU6050/9150,
+	  MPU6500/6515/6880/9250/9255, ICM20608(D)/20609/20689, ICM20602/ICM20690
+	  and IAM20680 motion tracking devices over I2C.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-i2c.
 
@@ -27,8 +27,8 @@ config INV_MPU6050_SPI
 	select INV_MPU6050_IIO
 	select REGMAP_SPI
 	help
-	  This driver supports the Invensense MPU6000/6500/6515,
-	  MPU9250/9255 and ICM20608/20602 motion tracking devices
-	  over SPI.
+	  This driver supports the Invensense MPU6000,
+	  MPU6500/6515/6880/9250/9255, ICM20608(D)/20609/20689, ICM20602/ICM20690
+	  and IAM20680 motion tracking devices over SPI.
 	  This driver can be built as a module. The module will be called
 	  inv-mpu6050-spi.
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
index 2f8560ba4572..f7bce428d9eb 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_acpi.c
@@ -65,7 +65,7 @@ static int asus_acpi_get_sensor_info(struct acpi_device *adev,
 
 			sub_elem = &elem->package.elements[j];
 			if (sub_elem->type == ACPI_TYPE_STRING)
-				strlcpy(info->type, sub_elem->string.pointer,
+				strscpy(info->type, sub_elem->string.pointer,
 					sizeof(info->type));
 			else if (sub_elem->type == ACPI_TYPE_INTEGER) {
 				if (sub_elem->integer.value != client->addr) {
@@ -101,8 +101,8 @@ static int inv_mpu_process_acpi_config(struct i2c_client *client,
 				       unsigned short *primary_addr,
 				       unsigned short *secondary_addr)
 {
+	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
 	const struct acpi_device_id *id;
-	struct acpi_device *adev;
 	u32 i2c_addr = 0;
 	LIST_HEAD(resources);
 	int ret;
@@ -112,10 +112,6 @@ static int inv_mpu_process_acpi_config(struct i2c_client *client,
 	if (!id)
 		return -ENODEV;
 
-	adev = ACPI_COMPANION(&client->dev);
-	if (!adev)
-		return -ENODEV;
-
 	ret = acpi_dev_get_resources(adev, &resources,
 				     acpi_i2c_check_resource, &i2c_addr);
 	if (ret < 0)
@@ -131,14 +127,14 @@ static int inv_mpu_process_acpi_config(struct i2c_client *client,
 int inv_mpu_acpi_create_mux_client(struct i2c_client *client)
 {
 	struct inv_mpu6050_state *st = iio_priv(dev_get_drvdata(&client->dev));
+	struct acpi_device *adev = ACPI_COMPANION(&client->dev);
 
 	st->mux_client = NULL;
-	if (ACPI_HANDLE(&client->dev)) {
+	if (adev) {
 		struct i2c_board_info info;
-		struct acpi_device *adev;
+		struct i2c_client *mux_client;
 		int ret = -1;
 
-		adev = ACPI_COMPANION(&client->dev);
 		memset(&info, 0, sizeof(info));
 
 		dmi_check_system(inv_mpu_dev_list);
@@ -162,7 +158,7 @@ int inv_mpu_acpi_create_mux_client(struct i2c_client *client)
 				char *name;
 
 				info.addr = secondary;
-				strlcpy(info.type, dev_name(&adev->dev),
+				strscpy(info.type, dev_name(&adev->dev),
 					sizeof(info.type));
 				name = strchr(info.type, ':');
 				if (name)
@@ -172,9 +168,10 @@ int inv_mpu_acpi_create_mux_client(struct i2c_client *client)
 			} else
 				return 0; /* no secondary addr, which is OK */
 		}
-		st->mux_client = i2c_new_device(st->muxc->adapter[0], &info);
-		if (!st->mux_client)
-			return -ENODEV;
+		mux_client = i2c_new_client_device(st->muxc->adapter[0], &info);
+		if (IS_ERR(mux_client))
+			return PTR_ERR(mux_client);
+		st->mux_client = mux_client;
 	}
 
 	return 0;
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
index 5096fc49012d..86fbbe904050 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_core.c
@@ -16,6 +16,8 @@
 #include <linux/acpi.h>
 #include <linux/platform_device.h>
 #include <linux/regulator/consumer.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
 #include "inv_mpu_iio.h"
 #include "inv_mpu_magn.h"
 
@@ -99,9 +101,31 @@ static const struct inv_mpu6050_reg_map reg_set_6050 = {
 };
 
 static const struct inv_mpu6050_chip_config chip_config_6050 = {
+	.clk = INV_CLK_INTERNAL,
 	.fsr = INV_MPU6050_FSR_2000DPS,
 	.lpf = INV_MPU6050_FILTER_20HZ,
-	.divider = INV_MPU6050_FIFO_RATE_TO_DIVIDER(INV_MPU6050_INIT_FIFO_RATE),
+	.divider = INV_MPU6050_FIFO_RATE_TO_DIVIDER(50),
+	.gyro_en = true,
+	.accl_en = true,
+	.temp_en = true,
+	.magn_en = false,
+	.gyro_fifo_enable = false,
+	.accl_fifo_enable = false,
+	.temp_fifo_enable = false,
+	.magn_fifo_enable = false,
+	.accl_fs = INV_MPU6050_FS_02G,
+	.user_ctrl = 0,
+};
+
+static const struct inv_mpu6050_chip_config chip_config_6500 = {
+	.clk = INV_CLK_PLL,
+	.fsr = INV_MPU6050_FSR_2000DPS,
+	.lpf = INV_MPU6050_FILTER_20HZ,
+	.divider = INV_MPU6050_FIFO_RATE_TO_DIVIDER(50),
+	.gyro_en = true,
+	.accl_en = true,
+	.temp_en = true,
+	.magn_en = false,
 	.gyro_fifo_enable = false,
 	.accl_fifo_enable = false,
 	.temp_fifo_enable = false,
@@ -119,22 +143,34 @@ static const struct inv_mpu6050_hw hw_info[] = {
 		.config = &chip_config_6050,
 		.fifo_size = 1024,
 		.temp = {INV_MPU6050_TEMP_OFFSET, INV_MPU6050_TEMP_SCALE},
+		.startup_time = {INV_MPU6050_GYRO_STARTUP_TIME, INV_MPU6050_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_MPU6500_WHOAMI_VALUE,
 		.name = "MPU6500",
 		.reg = &reg_set_6500,
-		.config = &chip_config_6050,
+		.config = &chip_config_6500,
 		.fifo_size = 512,
 		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_MPU6515_WHOAMI_VALUE,
 		.name = "MPU6515",
 		.reg = &reg_set_6500,
-		.config = &chip_config_6050,
+		.config = &chip_config_6500,
 		.fifo_size = 512,
 		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
+	},
+	{
+		.whoami = INV_MPU6880_WHOAMI_VALUE,
+		.name = "MPU6880",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 4096,
+		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_MPU6000_WHOAMI_VALUE,
@@ -143,6 +179,7 @@ static const struct inv_mpu6050_hw hw_info[] = {
 		.config = &chip_config_6050,
 		.fifo_size = 1024,
 		.temp = {INV_MPU6050_TEMP_OFFSET, INV_MPU6050_TEMP_SCALE},
+		.startup_time = {INV_MPU6050_GYRO_STARTUP_TIME, INV_MPU6050_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_MPU9150_WHOAMI_VALUE,
@@ -151,127 +188,283 @@ static const struct inv_mpu6050_hw hw_info[] = {
 		.config = &chip_config_6050,
 		.fifo_size = 1024,
 		.temp = {INV_MPU6050_TEMP_OFFSET, INV_MPU6050_TEMP_SCALE},
+		.startup_time = {INV_MPU6050_GYRO_STARTUP_TIME, INV_MPU6050_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_MPU9250_WHOAMI_VALUE,
 		.name = "MPU9250",
 		.reg = &reg_set_6500,
-		.config = &chip_config_6050,
+		.config = &chip_config_6500,
 		.fifo_size = 512,
 		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_MPU9255_WHOAMI_VALUE,
 		.name = "MPU9255",
 		.reg = &reg_set_6500,
-		.config = &chip_config_6050,
+		.config = &chip_config_6500,
 		.fifo_size = 512,
 		.temp = {INV_MPU6500_TEMP_OFFSET, INV_MPU6500_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_ICM20608_WHOAMI_VALUE,
 		.name = "ICM20608",
 		.reg = &reg_set_6500,
-		.config = &chip_config_6050,
+		.config = &chip_config_6500,
+		.fifo_size = 512,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
+	},
+	{
+		.whoami = INV_ICM20608D_WHOAMI_VALUE,
+		.name = "ICM20608D",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
 		.fifo_size = 512,
 		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
+	},
+	{
+		.whoami = INV_ICM20609_WHOAMI_VALUE,
+		.name = "ICM20609",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 4 * 1024,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
+	},
+	{
+		.whoami = INV_ICM20689_WHOAMI_VALUE,
+		.name = "ICM20689",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 4 * 1024,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 	{
 		.whoami = INV_ICM20602_WHOAMI_VALUE,
 		.name = "ICM20602",
 		.reg = &reg_set_icm20602,
-		.config = &chip_config_6050,
+		.config = &chip_config_6500,
 		.fifo_size = 1008,
 		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_ICM20602_GYRO_STARTUP_TIME, INV_ICM20602_ACCEL_STARTUP_TIME},
+	},
+	{
+		.whoami = INV_ICM20690_WHOAMI_VALUE,
+		.name = "ICM20690",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 1024,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_ICM20690_GYRO_STARTUP_TIME, INV_ICM20690_ACCEL_STARTUP_TIME},
+	},
+	{
+		.whoami = INV_IAM20680_WHOAMI_VALUE,
+		.name = "IAM20680",
+		.reg = &reg_set_6500,
+		.config = &chip_config_6500,
+		.fifo_size = 512,
+		.temp = {INV_ICM20608_TEMP_OFFSET, INV_ICM20608_TEMP_SCALE},
+		.startup_time = {INV_MPU6500_GYRO_STARTUP_TIME, INV_MPU6500_ACCEL_STARTUP_TIME},
 	},
 };
 
-int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en, u32 mask)
+static int inv_mpu6050_pwr_mgmt_1_write(struct inv_mpu6050_state *st, bool sleep,
+					int clock, int temp_dis)
 {
-	unsigned int d, mgmt_1;
-	int result;
-	/*
-	 * switch clock needs to be careful. Only when gyro is on, can
-	 * clock source be switched to gyro. Otherwise, it must be set to
-	 * internal clock
-	 */
-	if (mask == INV_MPU6050_BIT_PWR_GYRO_STBY) {
-		result = regmap_read(st->map, st->reg->pwr_mgmt_1, &mgmt_1);
-		if (result)
-			return result;
+	u8 val;
+
+	if (clock < 0)
+		clock = st->chip_config.clk;
+	if (temp_dis < 0)
+		temp_dis = !st->chip_config.temp_en;
+
+	val = clock & INV_MPU6050_BIT_CLK_MASK;
+	if (temp_dis)
+		val |= INV_MPU6050_BIT_TEMP_DIS;
+	if (sleep)
+		val |= INV_MPU6050_BIT_SLEEP;
 
-		mgmt_1 &= ~INV_MPU6050_BIT_CLK_MASK;
+	dev_dbg(regmap_get_device(st->map), "pwr_mgmt_1: 0x%x\n", val);
+	return regmap_write(st->map, st->reg->pwr_mgmt_1, val);
+}
+
+static int inv_mpu6050_clock_switch(struct inv_mpu6050_state *st,
+				    unsigned int clock)
+{
+	int ret;
+
+	switch (st->chip_type) {
+	case INV_MPU6050:
+	case INV_MPU6000:
+	case INV_MPU9150:
+		/* old chips: switch clock manually */
+		ret = inv_mpu6050_pwr_mgmt_1_write(st, false, clock, -1);
+		if (ret)
+			return ret;
+		st->chip_config.clk = clock;
+		break;
+	default:
+		/* automatic clock switching, nothing to do */
+		break;
 	}
 
-	if ((mask == INV_MPU6050_BIT_PWR_GYRO_STBY) && (!en)) {
-		/*
-		 * turning off gyro requires switch to internal clock first.
-		 * Then turn off gyro engine
-		 */
-		mgmt_1 |= INV_CLK_INTERNAL;
-		result = regmap_write(st->map, st->reg->pwr_mgmt_1, mgmt_1);
-		if (result)
-			return result;
+	return 0;
+}
+
+int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en,
+			      unsigned int mask)
+{
+	unsigned int sleep;
+	u8 pwr_mgmt2, user_ctrl;
+	int ret;
+
+	/* delete useless requests */
+	if (mask & INV_MPU6050_SENSOR_ACCL && en == st->chip_config.accl_en)
+		mask &= ~INV_MPU6050_SENSOR_ACCL;
+	if (mask & INV_MPU6050_SENSOR_GYRO && en == st->chip_config.gyro_en)
+		mask &= ~INV_MPU6050_SENSOR_GYRO;
+	if (mask & INV_MPU6050_SENSOR_TEMP && en == st->chip_config.temp_en)
+		mask &= ~INV_MPU6050_SENSOR_TEMP;
+	if (mask & INV_MPU6050_SENSOR_MAGN && en == st->chip_config.magn_en)
+		mask &= ~INV_MPU6050_SENSOR_MAGN;
+	if (mask == 0)
+		return 0;
+
+	/* turn on/off temperature sensor */
+	if (mask & INV_MPU6050_SENSOR_TEMP) {
+		ret = inv_mpu6050_pwr_mgmt_1_write(st, false, -1, !en);
+		if (ret)
+			return ret;
+		st->chip_config.temp_en = en;
 	}
 
-	result = regmap_read(st->map, st->reg->pwr_mgmt_2, &d);
-	if (result)
-		return result;
-	if (en)
-		d &= ~mask;
-	else
-		d |= mask;
-	result = regmap_write(st->map, st->reg->pwr_mgmt_2, d);
-	if (result)
-		return result;
+	/* update user_crtl for driving magnetometer */
+	if (mask & INV_MPU6050_SENSOR_MAGN) {
+		user_ctrl = st->chip_config.user_ctrl;
+		if (en)
+			user_ctrl |= INV_MPU6050_BIT_I2C_MST_EN;
+		else
+			user_ctrl &= ~INV_MPU6050_BIT_I2C_MST_EN;
+		ret = regmap_write(st->map, st->reg->user_ctrl, user_ctrl);
+		if (ret)
+			return ret;
+		st->chip_config.user_ctrl = user_ctrl;
+		st->chip_config.magn_en = en;
+	}
 
-	if (en) {
-		/* Wait for output to stabilize */
-		msleep(INV_MPU6050_TEMP_UP_TIME);
-		if (mask == INV_MPU6050_BIT_PWR_GYRO_STBY) {
-			/* switch internal clock to PLL */
-			mgmt_1 |= INV_CLK_PLL;
-			result = regmap_write(st->map,
-					      st->reg->pwr_mgmt_1, mgmt_1);
-			if (result)
-				return result;
+	/* manage accel & gyro engines */
+	if (mask & (INV_MPU6050_SENSOR_ACCL | INV_MPU6050_SENSOR_GYRO)) {
+		/* compute power management 2 current value */
+		pwr_mgmt2 = 0;
+		if (!st->chip_config.accl_en)
+			pwr_mgmt2 |= INV_MPU6050_BIT_PWR_ACCL_STBY;
+		if (!st->chip_config.gyro_en)
+			pwr_mgmt2 |= INV_MPU6050_BIT_PWR_GYRO_STBY;
+
+		/* update to new requested value */
+		if (mask & INV_MPU6050_SENSOR_ACCL) {
+			if (en)
+				pwr_mgmt2 &= ~INV_MPU6050_BIT_PWR_ACCL_STBY;
+			else
+				pwr_mgmt2 |= INV_MPU6050_BIT_PWR_ACCL_STBY;
+		}
+		if (mask & INV_MPU6050_SENSOR_GYRO) {
+			if (en)
+				pwr_mgmt2 &= ~INV_MPU6050_BIT_PWR_GYRO_STBY;
+			else
+				pwr_mgmt2 |= INV_MPU6050_BIT_PWR_GYRO_STBY;
+		}
+
+		/* switch clock to internal when turning gyro off */
+		if (mask & INV_MPU6050_SENSOR_GYRO && !en) {
+			ret = inv_mpu6050_clock_switch(st, INV_CLK_INTERNAL);
+			if (ret)
+				return ret;
+		}
+
+		/* update sensors engine */
+		dev_dbg(regmap_get_device(st->map), "pwr_mgmt_2: 0x%x\n",
+			pwr_mgmt2);
+		ret = regmap_write(st->map, st->reg->pwr_mgmt_2, pwr_mgmt2);
+		if (ret)
+			return ret;
+		if (mask & INV_MPU6050_SENSOR_ACCL)
+			st->chip_config.accl_en = en;
+		if (mask & INV_MPU6050_SENSOR_GYRO)
+			st->chip_config.gyro_en = en;
+
+		/* compute required time to have sensors stabilized */
+		sleep = 0;
+		if (en) {
+			if (mask & INV_MPU6050_SENSOR_ACCL) {
+				if (sleep < st->hw->startup_time.accel)
+					sleep = st->hw->startup_time.accel;
+			}
+			if (mask & INV_MPU6050_SENSOR_GYRO) {
+				if (sleep < st->hw->startup_time.gyro)
+					sleep = st->hw->startup_time.gyro;
+			}
+		} else {
+			if (mask & INV_MPU6050_SENSOR_GYRO) {
+				if (sleep < INV_MPU6050_GYRO_DOWN_TIME)
+					sleep = INV_MPU6050_GYRO_DOWN_TIME;
+			}
+		}
+		if (sleep)
+			msleep(sleep);
+
+		/* switch clock to PLL when turning gyro on */
+		if (mask & INV_MPU6050_SENSOR_GYRO && en) {
+			ret = inv_mpu6050_clock_switch(st, INV_CLK_PLL);
+			if (ret)
+				return ret;
 		}
 	}
 
 	return 0;
 }
 
-int inv_mpu6050_set_power_itg(struct inv_mpu6050_state *st, bool power_on)
+static int inv_mpu6050_set_power_itg(struct inv_mpu6050_state *st,
+				     bool power_on)
 {
 	int result;
 
-	if (power_on) {
-		if (!st->powerup_count) {
-			result = regmap_write(st->map, st->reg->pwr_mgmt_1, 0);
-			if (result)
-				return result;
-			usleep_range(INV_MPU6050_REG_UP_TIME_MIN,
-				     INV_MPU6050_REG_UP_TIME_MAX);
-		}
-		st->powerup_count++;
-	} else {
-		if (st->powerup_count == 1) {
-			result = regmap_write(st->map, st->reg->pwr_mgmt_1,
-					      INV_MPU6050_BIT_SLEEP);
-			if (result)
-				return result;
-		}
-		st->powerup_count--;
-	}
+	result = inv_mpu6050_pwr_mgmt_1_write(st, !power_on, -1, -1);
+	if (result)
+		return result;
 
-	dev_dbg(regmap_get_device(st->map), "set power %d, count=%u\n",
-		power_on, st->powerup_count);
+	if (power_on)
+		usleep_range(INV_MPU6050_REG_UP_TIME_MIN,
+			     INV_MPU6050_REG_UP_TIME_MAX);
 
 	return 0;
 }
-EXPORT_SYMBOL_GPL(inv_mpu6050_set_power_itg);
 
-/**
+static int inv_mpu6050_set_gyro_fsr(struct inv_mpu6050_state *st,
+				    enum inv_mpu6050_fsr_e val)
+{
+	unsigned int gyro_shift;
+	u8 data;
+
+	switch (st->chip_type) {
+	case INV_ICM20690:
+		gyro_shift = INV_ICM20690_GYRO_CONFIG_FSR_SHIFT;
+		break;
+	default:
+		gyro_shift = INV_MPU6050_GYRO_CONFIG_FSR_SHIFT;
+		break;
+	}
+
+	data = val << gyro_shift;
+	return regmap_write(st->map, st->reg->gyro_config, data);
+}
+
+/*
  *  inv_mpu6050_set_lpf_regs() - set low pass filter registers, chip dependent
  *
  *  MPU60xx/MPU9150 use only 1 register for accelerometer + gyroscope
@@ -286,23 +479,26 @@ static int inv_mpu6050_set_lpf_regs(struct inv_mpu6050_state *st,
 	if (result)
 		return result;
 
+	/* set accel lpf */
 	switch (st->chip_type) {
 	case INV_MPU6050:
 	case INV_MPU6000:
 	case INV_MPU9150:
 		/* old chips, nothing to do */
-		result = 0;
+		return 0;
+	case INV_ICM20689:
+	case INV_ICM20690:
+		/* set FIFO size to maximum value */
+		val |= INV_ICM20689_BITS_FIFO_SIZE_MAX;
 		break;
 	default:
-		/* set accel lpf */
-		result = regmap_write(st->map, st->reg->accel_lpf, val);
 		break;
 	}
 
-	return result;
+	return regmap_write(st->map, st->reg->accel_lpf, val);
 }
 
-/**
+/*
  *  inv_mpu6050_init_config() - Initialize hardware, disable FIFO.
  *
  *  Initial configuration:
@@ -317,35 +513,28 @@ static int inv_mpu6050_init_config(struct iio_dev *indio_dev)
 	u8 d;
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 
-	result = inv_mpu6050_set_power_itg(st, true);
+	result = inv_mpu6050_set_gyro_fsr(st, st->chip_config.fsr);
 	if (result)
 		return result;
-	d = (INV_MPU6050_FSR_2000DPS << INV_MPU6050_GYRO_CONFIG_FSR_SHIFT);
-	result = regmap_write(st->map, st->reg->gyro_config, d);
-	if (result)
-		goto error_power_off;
 
-	result = inv_mpu6050_set_lpf_regs(st, INV_MPU6050_FILTER_20HZ);
+	result = inv_mpu6050_set_lpf_regs(st, st->chip_config.lpf);
 	if (result)
-		goto error_power_off;
+		return result;
 
-	d = INV_MPU6050_FIFO_RATE_TO_DIVIDER(INV_MPU6050_INIT_FIFO_RATE);
+	d = st->chip_config.divider;
 	result = regmap_write(st->map, st->reg->sample_rate_div, d);
 	if (result)
-		goto error_power_off;
+		return result;
 
-	d = (INV_MPU6050_FS_02G << INV_MPU6050_ACCL_CONFIG_FSR_SHIFT);
+	d = (st->chip_config.accl_fs << INV_MPU6050_ACCL_CONFIG_FSR_SHIFT);
 	result = regmap_write(st->map, st->reg->accl_config, d);
 	if (result)
-		goto error_power_off;
+		return result;
 
 	result = regmap_write(st->map, st->reg->int_pin_cfg, st->irq_mask);
 	if (result)
 		return result;
 
-	memcpy(&st->chip_config, hw_info[st->chip_type].config,
-	       sizeof(struct inv_mpu6050_chip_config));
-
 	/*
 	 * Internal chip period is 1ms (1kHz).
 	 * Let's use at the beginning the theorical value before measuring
@@ -356,13 +545,9 @@ static int inv_mpu6050_init_config(struct iio_dev *indio_dev)
 	/* magn chip init, noop if not present in the chip */
 	result = inv_mpu_magn_probe(st);
 	if (result)
-		goto error_power_off;
-
-	return inv_mpu6050_set_power_itg(st, false);
+		return result;
 
-error_power_off:
-	inv_mpu6050_set_power_itg(st, false);
-	return result;
+	return 0;
 }
 
 static int inv_mpu6050_sensor_set(struct inv_mpu6050_state  *st, int reg,
@@ -372,7 +557,7 @@ static int inv_mpu6050_sensor_set(struct inv_mpu6050_state  *st, int reg,
 	__be16 d = cpu_to_be16(val);
 
 	ind = (axis - IIO_MOD_X) * 2;
-	result = regmap_bulk_write(st->map, reg + ind, (u8 *)&d, 2);
+	result = regmap_bulk_write(st->map, reg + ind, &d, sizeof(d));
 	if (result)
 		return -EINVAL;
 
@@ -386,7 +571,7 @@ static int inv_mpu6050_sensor_show(struct inv_mpu6050_state  *st, int reg,
 	__be16 d;
 
 	ind = (axis - IIO_MOD_X) * 2;
-	result = regmap_bulk_read(st->map, reg + ind, (u8 *)&d, 2);
+	result = regmap_bulk_read(st->map, reg + ind, &d, sizeof(d));
 	if (result)
 		return -EINVAL;
 	*val = (short)be16_to_cpup(&d);
@@ -399,45 +584,83 @@ static int inv_mpu6050_read_channel_data(struct iio_dev *indio_dev,
 					 int *val)
 {
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	struct device *pdev = regmap_get_device(st->map);
+	unsigned int freq_hz, period_us, min_sleep_us, max_sleep_us;
 	int result;
 	int ret;
 
-	result = inv_mpu6050_set_power_itg(st, true);
+	/* compute sample period */
+	freq_hz = INV_MPU6050_DIVIDER_TO_FIFO_RATE(st->chip_config.divider);
+	period_us = 1000000 / freq_hz;
+
+	result = pm_runtime_resume_and_get(pdev);
 	if (result)
 		return result;
 
 	switch (chan->type) {
 	case IIO_ANGL_VEL:
-		result = inv_mpu6050_switch_engine(st, true,
-				INV_MPU6050_BIT_PWR_GYRO_STBY);
-		if (result)
-			goto error_power_off;
+		if (!st->chip_config.gyro_en) {
+			result = inv_mpu6050_switch_engine(st, true,
+					INV_MPU6050_SENSOR_GYRO);
+			if (result)
+				goto error_power_off;
+			/* need to wait 2 periods to have first valid sample */
+			min_sleep_us = 2 * period_us;
+			max_sleep_us = 2 * (period_us + period_us / 2);
+			usleep_range(min_sleep_us, max_sleep_us);
+		}
 		ret = inv_mpu6050_sensor_show(st, st->reg->raw_gyro,
 					      chan->channel2, val);
-		result = inv_mpu6050_switch_engine(st, false,
-				INV_MPU6050_BIT_PWR_GYRO_STBY);
-		if (result)
-			goto error_power_off;
 		break;
 	case IIO_ACCEL:
-		result = inv_mpu6050_switch_engine(st, true,
-				INV_MPU6050_BIT_PWR_ACCL_STBY);
-		if (result)
-			goto error_power_off;
+		if (!st->chip_config.accl_en) {
+			result = inv_mpu6050_switch_engine(st, true,
+					INV_MPU6050_SENSOR_ACCL);
+			if (result)
+				goto error_power_off;
+			/* wait 1 period for first sample availability */
+			min_sleep_us = period_us;
+			max_sleep_us = period_us + period_us / 2;
+			usleep_range(min_sleep_us, max_sleep_us);
+		}
 		ret = inv_mpu6050_sensor_show(st, st->reg->raw_accl,
 					      chan->channel2, val);
-		result = inv_mpu6050_switch_engine(st, false,
-				INV_MPU6050_BIT_PWR_ACCL_STBY);
-		if (result)
-			goto error_power_off;
 		break;
 	case IIO_TEMP:
-		/* wait for stablization */
-		msleep(INV_MPU6050_SENSOR_UP_TIME);
+		/* temperature sensor work only with accel and/or gyro */
+		if (!st->chip_config.accl_en && !st->chip_config.gyro_en) {
+			result = -EBUSY;
+			goto error_power_off;
+		}
+		if (!st->chip_config.temp_en) {
+			result = inv_mpu6050_switch_engine(st, true,
+					INV_MPU6050_SENSOR_TEMP);
+			if (result)
+				goto error_power_off;
+			/* wait 1 period for first sample availability */
+			min_sleep_us = period_us;
+			max_sleep_us = period_us + period_us / 2;
+			usleep_range(min_sleep_us, max_sleep_us);
+		}
 		ret = inv_mpu6050_sensor_show(st, st->reg->temperature,
 					      IIO_MOD_X, val);
 		break;
 	case IIO_MAGN:
+		if (!st->chip_config.magn_en) {
+			result = inv_mpu6050_switch_engine(st, true,
+					INV_MPU6050_SENSOR_MAGN);
+			if (result)
+				goto error_power_off;
+			/* frequency is limited for magnetometer */
+			if (freq_hz > INV_MPU_MAGN_FREQ_HZ_MAX) {
+				freq_hz = INV_MPU_MAGN_FREQ_HZ_MAX;
+				period_us = 1000000 / freq_hz;
+			}
+			/* need to wait 2 periods to have first valid sample */
+			min_sleep_us = 2 * period_us;
+			max_sleep_us = 2 * (period_us + period_us / 2);
+			usleep_range(min_sleep_us, max_sleep_us);
+		}
 		ret = inv_mpu_magn_read(st, chan->channel2, val);
 		break;
 	default:
@@ -445,14 +668,13 @@ static int inv_mpu6050_read_channel_data(struct iio_dev *indio_dev,
 		break;
 	}
 
-	result = inv_mpu6050_set_power_itg(st, false);
-	if (result)
-		goto error_power_off;
+	pm_runtime_mark_last_busy(pdev);
+	pm_runtime_put_autosuspend(pdev);
 
 	return ret;
 
 error_power_off:
-	inv_mpu6050_set_power_itg(st, false);
+	pm_runtime_put_autosuspend(pdev);
 	return result;
 }
 
@@ -530,15 +752,17 @@ inv_mpu6050_read_raw(struct iio_dev *indio_dev,
 	}
 }
 
-static int inv_mpu6050_write_gyro_scale(struct inv_mpu6050_state *st, int val)
+static int inv_mpu6050_write_gyro_scale(struct inv_mpu6050_state *st, int val,
+					int val2)
 {
 	int result, i;
-	u8 d;
+
+	if (val != 0)
+		return -EINVAL;
 
 	for (i = 0; i < ARRAY_SIZE(gyro_scale_6050); ++i) {
-		if (gyro_scale_6050[i] == val) {
-			d = (i << INV_MPU6050_GYRO_CONFIG_FSR_SHIFT);
-			result = regmap_write(st->map, st->reg->gyro_config, d);
+		if (gyro_scale_6050[i] == val2) {
+			result = inv_mpu6050_set_gyro_fsr(st, i);
 			if (result)
 				return result;
 
@@ -568,13 +792,17 @@ static int inv_write_raw_get_fmt(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
-static int inv_mpu6050_write_accel_scale(struct inv_mpu6050_state *st, int val)
+static int inv_mpu6050_write_accel_scale(struct inv_mpu6050_state *st, int val,
+					 int val2)
 {
 	int result, i;
 	u8 d;
 
+	if (val != 0)
+		return -EINVAL;
+
 	for (i = 0; i < ARRAY_SIZE(accel_scale); ++i) {
-		if (accel_scale[i] == val) {
+		if (accel_scale[i] == val2) {
 			d = (i << INV_MPU6050_ACCL_CONFIG_FSR_SHIFT);
 			result = regmap_write(st->map, st->reg->accl_config, d);
 			if (result)
@@ -593,6 +821,7 @@ static int inv_mpu6050_write_raw(struct iio_dev *indio_dev,
 				 int val, int val2, long mask)
 {
 	struct inv_mpu6050_state  *st = iio_priv(indio_dev);
+	struct device *pdev = regmap_get_device(st->map);
 	int result;
 
 	/*
@@ -604,7 +833,7 @@ static int inv_mpu6050_write_raw(struct iio_dev *indio_dev,
 		return result;
 
 	mutex_lock(&st->lock);
-	result = inv_mpu6050_set_power_itg(st, true);
+	result = pm_runtime_resume_and_get(pdev);
 	if (result)
 		goto error_write_raw_unlock;
 
@@ -612,10 +841,10 @@ static int inv_mpu6050_write_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_SCALE:
 		switch (chan->type) {
 		case IIO_ANGL_VEL:
-			result = inv_mpu6050_write_gyro_scale(st, val2);
+			result = inv_mpu6050_write_gyro_scale(st, val, val2);
 			break;
 		case IIO_ACCEL:
-			result = inv_mpu6050_write_accel_scale(st, val2);
+			result = inv_mpu6050_write_accel_scale(st, val, val2);
 			break;
 		default:
 			result = -EINVAL;
@@ -644,7 +873,8 @@ static int inv_mpu6050_write_raw(struct iio_dev *indio_dev,
 		break;
 	}
 
-	result |= inv_mpu6050_set_power_itg(st, false);
+	pm_runtime_mark_last_busy(pdev);
+	pm_runtime_put_autosuspend(pdev);
 error_write_raw_unlock:
 	mutex_unlock(&st->lock);
 	iio_device_release_direct_mode(indio_dev);
@@ -652,33 +882,35 @@ error_write_raw_unlock:
 	return result;
 }
 
-/**
+/*
  *  inv_mpu6050_set_lpf() - set low pass filer based on fifo rate.
  *
- *                  Based on the Nyquist principle, the sampling rate must
- *                  exceed twice of the bandwidth of the signal, or there
- *                  would be alising. This function basically search for the
- *                  correct low pass parameters based on the fifo rate, e.g,
- *                  sampling frequency.
+ *                  Based on the Nyquist principle, the bandwidth of the low
+ *                  pass filter must not exceed the signal sampling rate divided
+ *                  by 2, or there would be aliasing.
+ *                  This function basically search for the correct low pass
+ *                  parameters based on the fifo rate, e.g, sampling frequency.
  *
  *  lpf is set automatically when setting sampling rate to avoid any aliases.
  */
 static int inv_mpu6050_set_lpf(struct inv_mpu6050_state *st, int rate)
 {
-	static const int hz[] = {188, 98, 42, 20, 10, 5};
+	static const int hz[] = {400, 200, 90, 40, 20, 10};
 	static const int d[] = {
-		INV_MPU6050_FILTER_188HZ, INV_MPU6050_FILTER_98HZ,
-		INV_MPU6050_FILTER_42HZ, INV_MPU6050_FILTER_20HZ,
+		INV_MPU6050_FILTER_200HZ, INV_MPU6050_FILTER_100HZ,
+		INV_MPU6050_FILTER_45HZ, INV_MPU6050_FILTER_20HZ,
 		INV_MPU6050_FILTER_10HZ, INV_MPU6050_FILTER_5HZ
 	};
-	int i, h, result;
+	int i, result;
 	u8 data;
 
-	h = (rate >> 1);
-	i = 0;
-	while ((h < hz[i]) && (i < ARRAY_SIZE(d) - 1))
-		i++;
-	data = d[i];
+	data = INV_MPU6050_FILTER_5HZ;
+	for (i = 0; i < ARRAY_SIZE(hz); ++i) {
+		if (rate >= hz[i]) {
+			data = d[i];
+			break;
+		}
+	}
 	result = inv_mpu6050_set_lpf_regs(st, data);
 	if (result)
 		return result;
@@ -687,7 +919,7 @@ static int inv_mpu6050_set_lpf(struct inv_mpu6050_state *st, int rate)
 	return 0;
 }
 
-/**
+/*
  * inv_mpu6050_fifo_rate_store() - Set fifo rate.
  */
 static ssize_t
@@ -699,6 +931,7 @@ inv_mpu6050_fifo_rate_store(struct device *dev, struct device_attribute *attr,
 	int result;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	struct device *pdev = regmap_get_device(st->map);
 
 	if (kstrtoint(buf, 10, &fifo_rate))
 		return -EINVAL;
@@ -706,10 +939,6 @@ inv_mpu6050_fifo_rate_store(struct device *dev, struct device_attribute *attr,
 	    fifo_rate > INV_MPU6050_MAX_FIFO_RATE)
 		return -EINVAL;
 
-	result = iio_device_claim_direct_mode(indio_dev);
-	if (result)
-		return result;
-
 	/* compute the chip sample rate divider */
 	d = INV_MPU6050_FIFO_RATE_TO_DIVIDER(fifo_rate);
 	/* compute back the fifo rate to handle truncation cases */
@@ -720,7 +949,7 @@ inv_mpu6050_fifo_rate_store(struct device *dev, struct device_attribute *attr,
 		result = 0;
 		goto fifo_rate_fail_unlock;
 	}
-	result = inv_mpu6050_set_power_itg(st, true);
+	result = pm_runtime_resume_and_get(pdev);
 	if (result)
 		goto fifo_rate_fail_unlock;
 
@@ -738,18 +967,18 @@ inv_mpu6050_fifo_rate_store(struct device *dev, struct device_attribute *attr,
 	if (result)
 		goto fifo_rate_fail_power_off;
 
+	pm_runtime_mark_last_busy(pdev);
 fifo_rate_fail_power_off:
-	result |= inv_mpu6050_set_power_itg(st, false);
+	pm_runtime_put_autosuspend(pdev);
 fifo_rate_fail_unlock:
 	mutex_unlock(&st->lock);
-	iio_device_release_direct_mode(indio_dev);
 	if (result)
 		return result;
 
 	return count;
 }
 
-/**
+/*
  * inv_fifo_rate_show() - Get the current sampling rate.
  */
 static ssize_t
@@ -766,7 +995,7 @@ inv_fifo_rate_show(struct device *dev, struct device_attribute *attr,
 	return scnprintf(buf, PAGE_SIZE, "%u\n", fifo_rate);
 }
 
-/**
+/*
  * inv_attr_show() - calling this function will show current
  *                    parameters.
  *
@@ -1052,25 +1281,46 @@ static const struct attribute_group inv_attribute_group = {
 	.attrs = inv_attributes
 };
 
+static int inv_mpu6050_reg_access(struct iio_dev *indio_dev,
+				  unsigned int reg,
+				  unsigned int writeval,
+				  unsigned int *readval)
+{
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&st->lock);
+	if (readval)
+		ret = regmap_read(st->map, reg, readval);
+	else
+		ret = regmap_write(st->map, reg, writeval);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
 static const struct iio_info mpu_info = {
 	.read_raw = &inv_mpu6050_read_raw,
 	.write_raw = &inv_mpu6050_write_raw,
 	.write_raw_get_fmt = &inv_write_raw_get_fmt,
 	.attrs = &inv_attribute_group,
 	.validate_trigger = inv_mpu6050_validate_trigger,
+	.debugfs_reg_access = &inv_mpu6050_reg_access,
 };
 
-/**
+/*
  *  inv_check_and_setup_chip() - check and setup chip.
  */
 static int inv_check_and_setup_chip(struct inv_mpu6050_state *st)
 {
 	int result;
-	unsigned int regval;
+	unsigned int regval, mask;
 	int i;
 
 	st->hw  = &hw_info[st->chip_type];
 	st->reg = hw_info[st->chip_type].reg;
+	memcpy(&st->chip_config, hw_info[st->chip_type].config,
+	       sizeof(st->chip_config));
 
 	/* check chip self-identification */
 	result = regmap_read(st->map, INV_MPU6050_REG_WHOAMI, &regval);
@@ -1081,8 +1331,7 @@ static int inv_check_and_setup_chip(struct inv_mpu6050_state *st)
 		for (i = 0; i < INV_NUM_PARTS; ++i) {
 			if (regval == hw_info[i].whoami) {
 				dev_warn(regmap_get_device(st->map),
-					"whoami mismatch got %#02x (%s)"
-					"expected %#02hhx (%s)\n",
+					"whoami mismatch got 0x%02x (%s) expected 0x%02x (%s)\n",
 					regval, hw_info[i].name,
 					st->hw->whoami, st->hw->name);
 				break;
@@ -1090,7 +1339,7 @@ static int inv_check_and_setup_chip(struct inv_mpu6050_state *st)
 		}
 		if (i >= INV_NUM_PARTS) {
 			dev_err(regmap_get_device(st->map),
-				"invalid whoami %#02x expected %#02hhx (%s)\n",
+				"invalid whoami 0x%02x expected 0x%02x (%s)\n",
 				regval, st->hw->whoami, st->hw->name);
 			return -ENODEV;
 		}
@@ -1102,6 +1351,25 @@ static int inv_check_and_setup_chip(struct inv_mpu6050_state *st)
 	if (result)
 		return result;
 	msleep(INV_MPU6050_POWER_UP_TIME);
+	switch (st->chip_type) {
+	case INV_MPU6000:
+	case INV_MPU6500:
+	case INV_MPU6515:
+	case INV_MPU6880:
+	case INV_MPU9250:
+	case INV_MPU9255:
+		/* reset signal path (required for spi connection) */
+		regval = INV_MPU6050_BIT_TEMP_RST | INV_MPU6050_BIT_ACCEL_RST |
+			 INV_MPU6050_BIT_GYRO_RST;
+		result = regmap_write(st->map, INV_MPU6050_REG_SIGNAL_PATH_RESET,
+				      regval);
+		if (result)
+			return result;
+		msleep(INV_MPU6050_POWER_UP_TIME);
+		break;
+	default:
+		break;
+	}
 
 	/*
 	 * Turn power on. After reset, the sleep bit could be on
@@ -1112,17 +1380,13 @@ static int inv_check_and_setup_chip(struct inv_mpu6050_state *st)
 	result = inv_mpu6050_set_power_itg(st, true);
 	if (result)
 		return result;
-
-	result = inv_mpu6050_switch_engine(st, false,
-					   INV_MPU6050_BIT_PWR_ACCL_STBY);
-	if (result)
-		goto error_power_off;
-	result = inv_mpu6050_switch_engine(st, false,
-					   INV_MPU6050_BIT_PWR_GYRO_STBY);
+	mask = INV_MPU6050_SENSOR_ACCL | INV_MPU6050_SENSOR_GYRO |
+			INV_MPU6050_SENSOR_TEMP | INV_MPU6050_SENSOR_MAGN;
+	result = inv_mpu6050_switch_engine(st, false, mask);
 	if (result)
 		goto error_power_off;
 
-	return inv_mpu6050_set_power_itg(st, false);
+	return 0;
 
 error_power_off:
 	inv_mpu6050_set_power_itg(st, false);
@@ -1139,7 +1403,7 @@ static int inv_mpu_core_enable_regulator_vddio(struct inv_mpu6050_state *st)
 			"Failed to enable vddio regulator: %d\n", result);
 	} else {
 		/* Give the device a little bit of time to start up. */
-		usleep_range(35000, 70000);
+		usleep_range(3000, 5000);
 	}
 
 	return result;
@@ -1170,6 +1434,13 @@ static void inv_mpu_core_disable_regulator_action(void *_data)
 	inv_mpu_core_disable_regulator_vddio(st);
 }
 
+static void inv_mpu_pm_disable(void *data)
+{
+	struct device *dev = data;
+
+	pm_runtime_disable(dev);
+}
+
 int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 		int (*inv_mpu_bus_setup)(struct iio_dev *), int chip_type)
 {
@@ -1194,14 +1465,12 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 	st = iio_priv(indio_dev);
 	mutex_init(&st->lock);
 	st->chip_type = chip_type;
-	st->powerup_count = 0;
 	st->irq = irq;
 	st->map = regmap;
 
 	pdata = dev_get_platdata(dev);
 	if (!pdata) {
-		result = iio_read_mount_matrix(dev, "mount-matrix",
-					       &st->orientation);
+		result = iio_read_mount_matrix(dev, &st->orientation);
 		if (result) {
 			dev_err(dev, "Failed to retrieve mounting matrix %d\n",
 				result);
@@ -1211,15 +1480,21 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 		st->plat_data = *pdata;
 	}
 
-	desc = irq_get_irq_data(irq);
-	if (!desc) {
-		dev_err(dev, "Could not find IRQ %d\n", irq);
-		return -EINVAL;
-	}
+	if (irq > 0) {
+		desc = irq_get_irq_data(irq);
+		if (!desc) {
+			dev_err(dev, "Could not find IRQ %d\n", irq);
+			return -EINVAL;
+		}
 
-	irq_type = irqd_get_trigger_type(desc);
-	if (!irq_type)
+		irq_type = irqd_get_trigger_type(desc);
+		if (!irq_type)
+			irq_type = IRQF_TRIGGER_RISING;
+	} else {
+		/* Doesn't really matter, use the default */
 		irq_type = IRQF_TRIGGER_RISING;
+	}
+
 	if (irq_type & IRQF_TRIGGER_RISING)	// rising or both-edge
 		st->irq_mask = INV_MPU6050_ACTIVE_HIGH;
 	else if (irq_type == IRQF_TRIGGER_FALLING)
@@ -1237,28 +1512,21 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 	}
 
 	st->vdd_supply = devm_regulator_get(dev, "vdd");
-	if (IS_ERR(st->vdd_supply)) {
-		if (PTR_ERR(st->vdd_supply) != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get vdd regulator %d\n",
-				(int)PTR_ERR(st->vdd_supply));
-
-		return PTR_ERR(st->vdd_supply);
-	}
+	if (IS_ERR(st->vdd_supply))
+		return dev_err_probe(dev, PTR_ERR(st->vdd_supply),
+				     "Failed to get vdd regulator\n");
 
 	st->vddio_supply = devm_regulator_get(dev, "vddio");
-	if (IS_ERR(st->vddio_supply)) {
-		if (PTR_ERR(st->vddio_supply) != -EPROBE_DEFER)
-			dev_err(dev, "Failed to get vddio regulator %d\n",
-				(int)PTR_ERR(st->vddio_supply));
-
-		return PTR_ERR(st->vddio_supply);
-	}
+	if (IS_ERR(st->vddio_supply))
+		return dev_err_probe(dev, PTR_ERR(st->vddio_supply),
+				     "Failed to get vddio regulator\n");
 
 	result = regulator_enable(st->vdd_supply);
 	if (result) {
 		dev_err(dev, "Failed to enable vdd regulator: %d\n", result);
 		return result;
 	}
+	msleep(INV_MPU6050_POWER_UP_TIME);
 
 	result = inv_mpu_core_enable_regulator_vddio(st);
 	if (result) {
@@ -1287,11 +1555,10 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 	result = inv_mpu6050_init_config(indio_dev);
 	if (result) {
 		dev_err(dev, "Could not initialize device.\n");
-		return result;
+		goto error_power_off;
 	}
 
 	dev_set_drvdata(dev, indio_dev);
-	indio_dev->dev.parent = dev;
 	/* name will be NULL when enumerated via ACPI */
 	if (name)
 		indio_dev->name = name;
@@ -1299,8 +1566,24 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 		indio_dev->name = dev_name(dev);
 
 	/* requires parent device set in indio_dev */
-	if (inv_mpu_bus_setup)
-		inv_mpu_bus_setup(indio_dev);
+	if (inv_mpu_bus_setup) {
+		result = inv_mpu_bus_setup(indio_dev);
+		if (result)
+			goto error_power_off;
+	}
+
+	/* chip init is done, turning on runtime power management */
+	result = pm_runtime_set_active(dev);
+	if (result)
+		goto error_power_off;
+	pm_runtime_get_noresume(dev);
+	pm_runtime_enable(dev);
+	pm_runtime_set_autosuspend_delay(dev, INV_MPU6050_SUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_put(dev);
+	result = devm_add_action_or_reset(dev, inv_mpu_pm_disable, dev);
+	if (result)
+		return result;
 
 	switch (chip_type) {
 	case INV_MPU9150:
@@ -1336,20 +1619,26 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 	}
 
 	indio_dev->info = &mpu_info;
-	indio_dev->modes = INDIO_BUFFER_TRIGGERED;
 
-	result = devm_iio_triggered_buffer_setup(dev, indio_dev,
-						 iio_pollfunc_store_time,
-						 inv_mpu6050_read_fifo,
-						 NULL);
-	if (result) {
-		dev_err(dev, "configure buffer fail %d\n", result);
-		return result;
-	}
-	result = inv_mpu6050_probe_trigger(indio_dev, irq_type);
-	if (result) {
-		dev_err(dev, "trigger probe fail %d\n", result);
-		return result;
+	if (irq > 0) {
+		/*
+		 * The driver currently only supports buffered capture with its
+		 * own trigger. So no IRQ, no trigger, no buffer
+		 */
+		result = devm_iio_triggered_buffer_setup(dev, indio_dev,
+							 iio_pollfunc_store_time,
+							 inv_mpu6050_read_fifo,
+							 NULL);
+		if (result) {
+			dev_err(dev, "configure buffer fail %d\n", result);
+			return result;
+		}
+
+		result = inv_mpu6050_probe_trigger(indio_dev, irq_type);
+		if (result) {
+			dev_err(dev, "trigger probe fail %d\n", result);
+			return result;
+		}
 	}
 
 	result = devm_iio_device_register(dev, indio_dev);
@@ -1359,14 +1648,17 @@ int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
 	}
 
 	return 0;
+
+error_power_off:
+	inv_mpu6050_set_power_itg(st, false);
+	return result;
 }
 EXPORT_SYMBOL_GPL(inv_mpu_core_probe);
 
-#ifdef CONFIG_PM_SLEEP
-
-static int inv_mpu_resume(struct device *dev)
+static int __maybe_unused inv_mpu_resume(struct device *dev)
 {
-	struct inv_mpu6050_state *st = iio_priv(dev_get_drvdata(dev));
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 	int result;
 
 	mutex_lock(&st->lock);
@@ -1375,27 +1667,110 @@ static int inv_mpu_resume(struct device *dev)
 		goto out_unlock;
 
 	result = inv_mpu6050_set_power_itg(st, true);
+	if (result)
+		goto out_unlock;
+
+	pm_runtime_disable(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	result = inv_mpu6050_switch_engine(st, true, st->suspended_sensors);
+	if (result)
+		goto out_unlock;
+
+	if (iio_buffer_enabled(indio_dev))
+		result = inv_mpu6050_prepare_fifo(st, true);
+
 out_unlock:
 	mutex_unlock(&st->lock);
 
 	return result;
 }
 
-static int inv_mpu_suspend(struct device *dev)
+static int __maybe_unused inv_mpu_suspend(struct device *dev)
 {
-	struct inv_mpu6050_state *st = iio_priv(dev_get_drvdata(dev));
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 	int result;
 
 	mutex_lock(&st->lock);
+
+	st->suspended_sensors = 0;
+	if (pm_runtime_suspended(dev)) {
+		result = 0;
+		goto out_unlock;
+	}
+
+	if (iio_buffer_enabled(indio_dev)) {
+		result = inv_mpu6050_prepare_fifo(st, false);
+		if (result)
+			goto out_unlock;
+	}
+
+	if (st->chip_config.accl_en)
+		st->suspended_sensors |= INV_MPU6050_SENSOR_ACCL;
+	if (st->chip_config.gyro_en)
+		st->suspended_sensors |= INV_MPU6050_SENSOR_GYRO;
+	if (st->chip_config.temp_en)
+		st->suspended_sensors |= INV_MPU6050_SENSOR_TEMP;
+	if (st->chip_config.magn_en)
+		st->suspended_sensors |= INV_MPU6050_SENSOR_MAGN;
+	result = inv_mpu6050_switch_engine(st, false, st->suspended_sensors);
+	if (result)
+		goto out_unlock;
+
 	result = inv_mpu6050_set_power_itg(st, false);
+	if (result)
+		goto out_unlock;
+
 	inv_mpu_core_disable_regulator_vddio(st);
+out_unlock:
 	mutex_unlock(&st->lock);
 
 	return result;
 }
-#endif /* CONFIG_PM_SLEEP */
 
-SIMPLE_DEV_PM_OPS(inv_mpu_pmops, inv_mpu_suspend, inv_mpu_resume);
+static int __maybe_unused inv_mpu_runtime_suspend(struct device *dev)
+{
+	struct inv_mpu6050_state *st = iio_priv(dev_get_drvdata(dev));
+	unsigned int sensors;
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	sensors = INV_MPU6050_SENSOR_ACCL | INV_MPU6050_SENSOR_GYRO |
+			INV_MPU6050_SENSOR_TEMP | INV_MPU6050_SENSOR_MAGN;
+	ret = inv_mpu6050_switch_engine(st, false, sensors);
+	if (ret)
+		goto out_unlock;
+
+	ret = inv_mpu6050_set_power_itg(st, false);
+	if (ret)
+		goto out_unlock;
+
+	inv_mpu_core_disable_regulator_vddio(st);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static int __maybe_unused inv_mpu_runtime_resume(struct device *dev)
+{
+	struct inv_mpu6050_state *st = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	ret = inv_mpu_core_enable_regulator_vddio(st);
+	if (ret)
+		return ret;
+
+	return inv_mpu6050_set_power_itg(st, true);
+}
+
+const struct dev_pm_ops inv_mpu_pmops = {
+	SET_SYSTEM_SLEEP_PM_OPS(inv_mpu_suspend, inv_mpu_resume)
+	SET_RUNTIME_PM_OPS(inv_mpu_runtime_suspend, inv_mpu_runtime_resume, NULL)
+};
 EXPORT_SYMBOL_GPL(inv_mpu_pmops);
 
 MODULE_AUTHOR("Invensense Corporation");
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
index f47a28b4be23..14255a918eb1 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_i2c.c
@@ -3,13 +3,14 @@
 * Copyright (C) 2012 Invensense, Inc.
 */
 
-#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
+
 #include "inv_mpu_iio.h"
 
 static const struct regmap_config inv_mpu_regmap_config = {
@@ -19,62 +20,20 @@ static const struct regmap_config inv_mpu_regmap_config = {
 
 static int inv_mpu6050_select_bypass(struct i2c_mux_core *muxc, u32 chan_id)
 {
-	struct iio_dev *indio_dev = i2c_mux_priv(muxc);
-	struct inv_mpu6050_state *st = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&st->lock);
-
-	ret = inv_mpu6050_set_power_itg(st, true);
-	if (ret)
-		goto error_unlock;
-
-	ret = regmap_write(st->map, st->reg->int_pin_cfg,
-			   st->irq_mask | INV_MPU6050_BIT_BYPASS_EN);
-
-error_unlock:
-	mutex_unlock(&st->lock);
-
-	return ret;
-}
-
-static int inv_mpu6050_deselect_bypass(struct i2c_mux_core *muxc, u32 chan_id)
-{
-	struct iio_dev *indio_dev = i2c_mux_priv(muxc);
-	struct inv_mpu6050_state *st = iio_priv(indio_dev);
-
-	mutex_lock(&st->lock);
-
-	/* It doesn't really matter if any of the calls fail */
-	regmap_write(st->map, st->reg->int_pin_cfg, st->irq_mask);
-	inv_mpu6050_set_power_itg(st, false);
-
-	mutex_unlock(&st->lock);
-
 	return 0;
 }
 
-static const char *inv_mpu_match_acpi_device(struct device *dev,
-					     enum inv_devices *chip_id)
-{
-	const struct acpi_device_id *id;
-
-	id = acpi_match_device(dev->driver->acpi_match_table, dev);
-	if (!id)
-		return NULL;
-
-	*chip_id = (int)id->driver_data;
-
-	return dev_name(dev);
-}
-
 static bool inv_mpu_i2c_aux_bus(struct device *dev)
 {
 	struct inv_mpu6050_state *st = iio_priv(dev_get_drvdata(dev));
 
 	switch (st->chip_type) {
 	case INV_ICM20608:
+	case INV_ICM20608D:
+	case INV_ICM20609:
+	case INV_ICM20689:
 	case INV_ICM20602:
+	case INV_IAM20680:
 		/* no i2c auxiliary bus on the chip */
 		return false;
 	case INV_MPU9150:
@@ -89,34 +48,43 @@ static bool inv_mpu_i2c_aux_bus(struct device *dev)
 	}
 }
 
-/*
- * MPU9xxx magnetometer support requires to disable i2c auxiliary bus support.
- * To ensure backward compatibility with existing setups, do not disable
- * i2c auxiliary bus if it used.
- * Check for i2c-gate node in devicetree and set magnetometer disabled.
- * Only MPU6500 is supported by ACPI, no need to check.
- */
-static int inv_mpu_magn_disable(struct iio_dev *indio_dev)
+static int inv_mpu_i2c_aux_setup(struct iio_dev *indio_dev)
 {
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 	struct device *dev = indio_dev->dev.parent;
-	struct device_node *mux_node;
+	struct fwnode_handle *mux_node;
+	int ret;
 
+	/*
+	 * MPU9xxx magnetometer support requires to disable i2c auxiliary bus.
+	 * To ensure backward compatibility with existing setups, do not disable
+	 * i2c auxiliary bus if it used.
+	 * Check for i2c-gate node in devicetree and set magnetometer disabled.
+	 * Only MPU6500 is supported by ACPI, no need to check.
+	 */
 	switch (st->chip_type) {
 	case INV_MPU9150:
 	case INV_MPU9250:
 	case INV_MPU9255:
-		mux_node = of_get_child_by_name(dev->of_node, "i2c-gate");
+		mux_node = device_get_named_child_node(dev, "i2c-gate");
 		if (mux_node != NULL) {
 			st->magn_disabled = true;
 			dev_warn(dev, "disable internal use of magnetometer\n");
 		}
-		of_node_put(mux_node);
+		fwnode_handle_put(mux_node);
 		break;
 	default:
 		break;
 	}
 
+	/* enable i2c bypass when using i2c auxiliary bus */
+	if (inv_mpu_i2c_aux_bus(dev)) {
+		ret = regmap_write(st->map, st->reg->int_pin_cfg,
+				   st->irq_mask | INV_MPU6050_BIT_BYPASS_EN);
+		if (ret)
+			return ret;
+	}
+
 	return 0;
 }
 
@@ -130,6 +98,7 @@ static int inv_mpu_magn_disable(struct iio_dev *indio_dev)
 static int inv_mpu_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
+	const void *match;
 	struct inv_mpu6050_state *st;
 	int result;
 	enum inv_devices chip_type;
@@ -140,31 +109,27 @@ static int inv_mpu_probe(struct i2c_client *client,
 				     I2C_FUNC_SMBUS_I2C_BLOCK))
 		return -EOPNOTSUPP;
 
-	if (client->dev.of_node) {
-		chip_type = (enum inv_devices)
-			of_device_get_match_data(&client->dev);
+	match = device_get_match_data(&client->dev);
+	if (match) {
+		chip_type = (uintptr_t)match;
 		name = client->name;
 	} else if (id) {
 		chip_type = (enum inv_devices)
 			id->driver_data;
 		name = id->name;
-	} else if (ACPI_HANDLE(&client->dev)) {
-		name = inv_mpu_match_acpi_device(&client->dev, &chip_type);
-		if (!name)
-			return -ENODEV;
 	} else {
 		return -ENOSYS;
 	}
 
 	regmap = devm_regmap_init_i2c(client, &inv_mpu_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
 	result = inv_mpu_core_probe(regmap, client->irq, name,
-				    inv_mpu_magn_disable, chip_type);
+				    inv_mpu_i2c_aux_setup, chip_type);
 	if (result < 0)
 		return result;
 
@@ -173,8 +138,7 @@ static int inv_mpu_probe(struct i2c_client *client,
 		/* declare i2c auxiliary bus */
 		st->muxc = i2c_mux_alloc(client->adapter, &client->dev,
 					 1, 0, I2C_MUX_LOCKED | I2C_MUX_GATE,
-					 inv_mpu6050_select_bypass,
-					 inv_mpu6050_deselect_bypass);
+					 inv_mpu6050_select_bypass, NULL);
 		if (!st->muxc)
 			return -ENOMEM;
 		st->muxc->priv = dev_get_drvdata(&client->dev);
@@ -193,7 +157,7 @@ out_del_mux:
 	return result;
 }
 
-static int inv_mpu_remove(struct i2c_client *client)
+static void inv_mpu_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
@@ -202,8 +166,6 @@ static int inv_mpu_remove(struct i2c_client *client)
 		inv_mpu_acpi_delete_mux_client(client);
 		i2c_mux_del_adapters(st->muxc);
 	}
-
-	return 0;
 }
 
 /*
@@ -214,11 +176,17 @@ static const struct i2c_device_id inv_mpu_id[] = {
 	{"mpu6050", INV_MPU6050},
 	{"mpu6500", INV_MPU6500},
 	{"mpu6515", INV_MPU6515},
+	{"mpu6880", INV_MPU6880},
 	{"mpu9150", INV_MPU9150},
 	{"mpu9250", INV_MPU9250},
 	{"mpu9255", INV_MPU9255},
 	{"icm20608", INV_ICM20608},
+	{"icm20608d", INV_ICM20608D},
+	{"icm20609", INV_ICM20609},
+	{"icm20689", INV_ICM20689},
 	{"icm20602", INV_ICM20602},
+	{"icm20690", INV_ICM20690},
+	{"iam20680", INV_IAM20680},
 	{}
 };
 
@@ -238,6 +206,10 @@ static const struct of_device_id inv_of_match[] = {
 		.data = (void *)INV_MPU6515
 	},
 	{
+		.compatible = "invensense,mpu6880",
+		.data = (void *)INV_MPU6880
+	},
+	{
 		.compatible = "invensense,mpu9150",
 		.data = (void *)INV_MPU9150
 	},
@@ -254,9 +226,29 @@ static const struct of_device_id inv_of_match[] = {
 		.data = (void *)INV_ICM20608
 	},
 	{
+		.compatible = "invensense,icm20608d",
+		.data = (void *)INV_ICM20608D
+	},
+	{
+		.compatible = "invensense,icm20609",
+		.data = (void *)INV_ICM20609
+	},
+	{
+		.compatible = "invensense,icm20689",
+		.data = (void *)INV_ICM20689
+	},
+	{
 		.compatible = "invensense,icm20602",
 		.data = (void *)INV_ICM20602
 	},
+	{
+		.compatible = "invensense,icm20690",
+		.data = (void *)INV_ICM20690
+	},
+	{
+		.compatible = "invensense,iam20680",
+		.data = (void *)INV_IAM20680
+	},
 	{ }
 };
 MODULE_DEVICE_TABLE(of, inv_of_match);
@@ -265,7 +257,6 @@ static const struct acpi_device_id inv_acpi_match[] = {
 	{"INVN6500", INV_MPU6500},
 	{ },
 };
-
 MODULE_DEVICE_TABLE(acpi, inv_acpi_match);
 
 static struct i2c_driver inv_mpu_driver = {
@@ -274,7 +265,7 @@ static struct i2c_driver inv_mpu_driver = {
 	.id_table	=	inv_mpu_id,
 	.driver = {
 		.of_match_table = inv_of_match,
-		.acpi_match_table = ACPI_PTR(inv_acpi_match),
+		.acpi_match_table = inv_acpi_match,
 		.name	=	"inv-mpu6050-i2c",
 		.pm     =       &inv_mpu_pmops,
 	},
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
index 6158fca7f70e..94b54c501ec0 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_iio.h
@@ -70,20 +70,37 @@ enum inv_devices {
 	INV_MPU6050,
 	INV_MPU6500,
 	INV_MPU6515,
+	INV_MPU6880,
 	INV_MPU6000,
 	INV_MPU9150,
 	INV_MPU9250,
 	INV_MPU9255,
 	INV_ICM20608,
+	INV_ICM20608D,
+	INV_ICM20609,
+	INV_ICM20689,
 	INV_ICM20602,
+	INV_ICM20690,
+	INV_IAM20680,
 	INV_NUM_PARTS
 };
 
+/* chip sensors mask: accelerometer, gyroscope, temperature, magnetometer */
+#define INV_MPU6050_SENSOR_ACCL		BIT(0)
+#define INV_MPU6050_SENSOR_GYRO		BIT(1)
+#define INV_MPU6050_SENSOR_TEMP		BIT(2)
+#define INV_MPU6050_SENSOR_MAGN		BIT(3)
+
 /**
  *  struct inv_mpu6050_chip_config - Cached chip configuration data.
+ *  @clk:		selected chip clock
  *  @fsr:		Full scale range.
  *  @lpf:		Digital low pass filter frequency.
  *  @accl_fs:		accel full scale range.
+ *  @accl_en:		accel engine enabled
+ *  @gyro_en:		gyro engine enabled
+ *  @temp_en:		temperature sensor enabled
+ *  @magn_en:		magn engine (i2c master) enabled
  *  @accl_fifo_enable:	enable accel data output
  *  @gyro_fifo_enable:	enable gyro data output
  *  @temp_fifo_enable:	enable temp data output
@@ -91,9 +108,14 @@ enum inv_devices {
  *  @divider:		chip sample rate divider (sample rate divider - 1)
  */
 struct inv_mpu6050_chip_config {
+	unsigned int clk:3;
 	unsigned int fsr:2;
 	unsigned int lpf:3;
 	unsigned int accl_fs:2;
+	unsigned int accl_en:1;
+	unsigned int gyro_en:1;
+	unsigned int temp_en:1;
+	unsigned int magn_en:1;
 	unsigned int accl_fifo_enable:1;
 	unsigned int gyro_fifo_enable:1;
 	unsigned int temp_fifo_enable:1;
@@ -102,6 +124,13 @@ struct inv_mpu6050_chip_config {
 	u8 user_ctrl;
 };
 
+/*
+ * Maximum of 6 + 6 + 2 + 7 (for MPU9x50) = 21 round up to 24 and plus 8.
+ * May be less if fewer channels are enabled, as long as the timestamp
+ * remains 8 byte aligned
+ */
+#define INV_MPU6050_OUTPUT_DATA_SIZE         32
+
 /**
  *  struct inv_mpu6050_hw - Other important hardware information.
  *  @whoami:	Self identification byte from WHO_AM_I register
@@ -121,6 +150,10 @@ struct inv_mpu6050_hw {
 		int offset;
 		int scale;
 	} temp;
+	struct {
+		unsigned int accel;
+		unsigned int gyro;
+	} startup_time;
 };
 
 /*
@@ -144,6 +177,8 @@ struct inv_mpu6050_hw {
  *  @magn_disabled:     magnetometer disabled for backward compatibility reason.
  *  @magn_raw_to_gauss:	coefficient to convert mag raw value to Gauss.
  *  @magn_orient:       magnetometer sensor chip orientation if available.
+ *  @suspended_sensors:	sensors mask of sensors turned off for suspend
+ *  @data:		dma safe buffer used for bulk reads.
  */
 struct inv_mpu6050_state {
 	struct mutex lock;
@@ -154,7 +189,6 @@ struct inv_mpu6050_state {
 	enum   inv_devices chip_type;
 	struct i2c_mux_core *muxc;
 	struct i2c_client *mux_client;
-	unsigned int powerup_count;
 	struct inv_mpu6050_platform_data plat_data;
 	struct iio_mount_matrix orientation;
 	struct regmap *map;
@@ -169,6 +203,8 @@ struct inv_mpu6050_state {
 	bool magn_disabled;
 	s32 magn_raw_to_gauss[3];
 	struct iio_mount_matrix magn_orient;
+	unsigned int suspended_sensors;
+	u8 data[INV_MPU6050_OUTPUT_DATA_SIZE] __aligned(IIO_DMA_MINALIGN);
 };
 
 /*register and associated bit definition*/
@@ -241,7 +277,13 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_BIT_I2C_SLV3_DLY_EN     0x08
 #define INV_MPU6050_BIT_DELAY_ES_SHADOW     0x80
 
+#define INV_MPU6050_REG_SIGNAL_PATH_RESET   0x68
+#define INV_MPU6050_BIT_TEMP_RST            BIT(0)
+#define INV_MPU6050_BIT_ACCEL_RST           BIT(1)
+#define INV_MPU6050_BIT_GYRO_RST            BIT(2)
+
 #define INV_MPU6050_REG_USER_CTRL           0x6A
+#define INV_MPU6050_BIT_SIG_COND_RST        0x01
 #define INV_MPU6050_BIT_FIFO_RST            0x04
 #define INV_MPU6050_BIT_DMP_RST             0x08
 #define INV_MPU6050_BIT_I2C_MST_EN          0x20
@@ -252,6 +294,7 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_REG_PWR_MGMT_1          0x6B
 #define INV_MPU6050_BIT_H_RESET             0x80
 #define INV_MPU6050_BIT_SLEEP               0x40
+#define INV_MPU6050_BIT_TEMP_DIS            0x08
 #define INV_MPU6050_BIT_CLK_MASK            0x7
 
 #define INV_MPU6050_REG_PWR_MGMT_2          0x6C
@@ -276,12 +319,26 @@ struct inv_mpu6050_state {
 
 /* mpu6500 registers */
 #define INV_MPU6500_REG_ACCEL_CONFIG_2      0x1D
+#define INV_ICM20689_BITS_FIFO_SIZE_MAX     0xC0
 #define INV_MPU6500_REG_ACCEL_OFFSET        0x77
 
 /* delay time in milliseconds */
 #define INV_MPU6050_POWER_UP_TIME            100
 #define INV_MPU6050_TEMP_UP_TIME             100
-#define INV_MPU6050_SENSOR_UP_TIME           30
+#define INV_MPU6050_ACCEL_STARTUP_TIME       20
+#define INV_MPU6050_GYRO_STARTUP_TIME        60
+#define INV_MPU6050_GYRO_DOWN_TIME           150
+#define INV_MPU6050_SUSPEND_DELAY_MS         2000
+
+#define INV_MPU6500_GYRO_STARTUP_TIME        70
+#define INV_MPU6500_ACCEL_STARTUP_TIME       30
+
+#define INV_ICM20602_GYRO_STARTUP_TIME       100
+#define INV_ICM20602_ACCEL_STARTUP_TIME      20
+
+#define INV_ICM20690_GYRO_STARTUP_TIME       80
+#define INV_ICM20690_ACCEL_STARTUP_TIME      10
+
 
 /* delay time in microseconds */
 #define INV_MPU6050_REG_UP_TIME_MIN          5000
@@ -293,6 +350,7 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_MAX_ACCL_FS_PARAM        3
 #define INV_MPU6050_THREE_AXIS               3
 #define INV_MPU6050_GYRO_CONFIG_FSR_SHIFT    3
+#define INV_ICM20690_GYRO_CONFIG_FSR_SHIFT   2
 #define INV_MPU6050_ACCL_CONFIG_FSR_SHIFT    3
 
 #define INV_MPU6500_TEMP_OFFSET              7011
@@ -301,9 +359,6 @@ struct inv_mpu6050_state {
 #define INV_ICM20608_TEMP_OFFSET	     8170
 #define INV_ICM20608_TEMP_SCALE		     3059976
 
-/* 6 + 6 + 2 + 7 (for MPU9x50) = 21 round up to 24 and plus 8 */
-#define INV_MPU6050_OUTPUT_DATA_SIZE         32
-
 #define INV_MPU6050_REG_INT_PIN_CFG	0x37
 #define INV_MPU6050_ACTIVE_HIGH		0x00
 #define INV_MPU6050_ACTIVE_LOW		0x80
@@ -315,7 +370,6 @@ struct inv_mpu6050_state {
 #define INV_MPU6050_TS_PERIOD_JITTER	4
 
 /* init parameters */
-#define INV_MPU6050_INIT_FIFO_RATE           50
 #define INV_MPU6050_MAX_FIFO_RATE            1000
 #define INV_MPU6050_MIN_FIFO_RATE            4
 
@@ -335,12 +389,18 @@ struct inv_mpu6050_state {
 #define INV_MPU6000_WHOAMI_VALUE		0x68
 #define INV_MPU6050_WHOAMI_VALUE		0x68
 #define INV_MPU6500_WHOAMI_VALUE		0x70
+#define INV_MPU6880_WHOAMI_VALUE		0x78
 #define INV_MPU9150_WHOAMI_VALUE		0x68
 #define INV_MPU9250_WHOAMI_VALUE		0x71
 #define INV_MPU9255_WHOAMI_VALUE		0x73
 #define INV_MPU6515_WHOAMI_VALUE		0x74
 #define INV_ICM20608_WHOAMI_VALUE		0xAF
+#define INV_ICM20608D_WHOAMI_VALUE		0xAE
+#define INV_ICM20609_WHOAMI_VALUE		0xA6
+#define INV_ICM20689_WHOAMI_VALUE		0x98
 #define INV_ICM20602_WHOAMI_VALUE		0x12
+#define INV_ICM20690_WHOAMI_VALUE		0x20
+#define INV_IAM20680_WHOAMI_VALUE		0xA9
 
 /* scan element definition for generic MPU6xxx devices */
 enum inv_mpu6050_scan {
@@ -360,14 +420,14 @@ enum inv_mpu6050_scan {
 };
 
 enum inv_mpu6050_filter_e {
-	INV_MPU6050_FILTER_256HZ_NOLPF2 = 0,
-	INV_MPU6050_FILTER_188HZ,
-	INV_MPU6050_FILTER_98HZ,
-	INV_MPU6050_FILTER_42HZ,
+	INV_MPU6050_FILTER_NOLPF2 = 0,
+	INV_MPU6050_FILTER_200HZ,
+	INV_MPU6050_FILTER_100HZ,
+	INV_MPU6050_FILTER_45HZ,
 	INV_MPU6050_FILTER_20HZ,
 	INV_MPU6050_FILTER_10HZ,
 	INV_MPU6050_FILTER_5HZ,
-	INV_MPU6050_FILTER_2100HZ_NOLPF,
+	INV_MPU6050_FILTER_NOLPF,
 	NUM_MPU6050_FILTER
 };
 
@@ -401,10 +461,10 @@ enum inv_mpu6050_clock_sel_e {
 
 irqreturn_t inv_mpu6050_read_fifo(int irq, void *p);
 int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev, int irq_type);
-int inv_reset_fifo(struct iio_dev *indio_dev);
-int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en, u32 mask);
+int inv_mpu6050_prepare_fifo(struct inv_mpu6050_state *st, bool enable);
+int inv_mpu6050_switch_engine(struct inv_mpu6050_state *st, bool en,
+			      unsigned int mask);
 int inv_mpu6050_write_reg(struct inv_mpu6050_state *st, int reg, u8 val);
-int inv_mpu6050_set_power_itg(struct inv_mpu6050_state *st, bool power_on);
 int inv_mpu_acpi_create_mux_client(struct i2c_client *client);
 void inv_mpu_acpi_delete_mux_client(struct i2c_client *client);
 int inv_mpu_core_probe(struct regmap *regmap, int irq, const char *name,
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c
index 4f192352521e..6aee6c989485 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.c
@@ -44,9 +44,6 @@
 #define INV_MPU_MAGN_REG_ASAY		0x11
 #define INV_MPU_MAGN_REG_ASAZ		0x12
 
-/* Magnetometer maximum frequency */
-#define INV_MPU_MAGN_FREQ_HZ_MAX	50
-
 static bool inv_magn_supported(const struct inv_mpu6050_state *st)
 {
 	switch (st->chip_type) {
@@ -264,6 +261,7 @@ int inv_mpu_magn_set_rate(const struct inv_mpu6050_state *st, int fifo_rate)
  */
 int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st)
 {
+	struct device *dev = regmap_get_device(st->map);
 	const char *orient;
 	char *str;
 	int i;
@@ -282,22 +280,27 @@ int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st)
 		st->magn_orient.rotation[4] = st->orientation.rotation[1];
 		st->magn_orient.rotation[5] = st->orientation.rotation[2];
 		/* z <- -z */
-		for (i = 0; i < 3; ++i) {
-			orient = st->orientation.rotation[6 + i];
-			/* use length + 2 for adding minus sign if needed */
-			str = devm_kzalloc(regmap_get_device(st->map),
-					   strlen(orient) + 2, GFP_KERNEL);
-			if (str == NULL)
+		for (i = 6; i < 9; ++i) {
+			orient = st->orientation.rotation[i];
+
+			/*
+			 * The value is negated according to one of the following
+			 * rules:
+			 *
+			 * 1) Drop leading minus.
+			 * 2) Leave 0 as is.
+			 * 3) Add leading minus.
+			 */
+			if (orient[0] == '-')
+				str = devm_kstrdup(dev, orient + 1, GFP_KERNEL);
+			else if (!strcmp(orient, "0"))
+				str = devm_kstrdup(dev, orient, GFP_KERNEL);
+			else
+				str = devm_kasprintf(dev, GFP_KERNEL, "-%s", orient);
+			if (!str)
 				return -ENOMEM;
-			if (strcmp(orient, "0") == 0) {
-				strcpy(str, orient);
-			} else if (orient[0] == '-') {
-				strcpy(str, &orient[1]);
-			} else {
-				str[0] = '-';
-				strcpy(&str[1], orient);
-			}
-			st->magn_orient.rotation[6 + i] = str;
+
+			st->magn_orient.rotation[i] = str;
 		}
 		break;
 	default:
@@ -316,59 +319,32 @@ int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st)
  *
  * Returns 0 on success, a negative error code otherwise
  */
-int inv_mpu_magn_read(const struct inv_mpu6050_state *st, int axis, int *val)
+int inv_mpu_magn_read(struct inv_mpu6050_state *st, int axis, int *val)
 {
-	unsigned int user_ctrl, status;
-	__be16 data[3];
+	unsigned int status;
+	__be16 data;
 	uint8_t addr;
-	uint8_t d;
-	unsigned int period_ms;
 	int ret;
 
 	/* quit if chip is not supported */
 	if (!inv_magn_supported(st))
 		return -ENODEV;
 
-	/* Mag data: X - Y - Z */
+	/* Mag data: XH,XL,YH,YL,ZH,ZL */
 	switch (axis) {
 	case IIO_MOD_X:
 		addr = 0;
 		break;
 	case IIO_MOD_Y:
-		addr = 1;
+		addr = 2;
 		break;
 	case IIO_MOD_Z:
-		addr = 2;
+		addr = 4;
 		break;
 	default:
 		return -EINVAL;
 	}
-
-	/* set sample rate to max mag freq */
-	d = INV_MPU6050_FIFO_RATE_TO_DIVIDER(INV_MPU_MAGN_FREQ_HZ_MAX);
-	ret = regmap_write(st->map, st->reg->sample_rate_div, d);
-	if (ret)
-		return ret;
-
-	/* start i2c master, wait for xfer, stop */
-	user_ctrl = st->chip_config.user_ctrl | INV_MPU6050_BIT_I2C_MST_EN;
-	ret = regmap_write(st->map, st->reg->user_ctrl, user_ctrl);
-	if (ret)
-		return ret;
-
-	/* need to wait 2 periods + half-period margin */
-	period_ms = 1000 / INV_MPU_MAGN_FREQ_HZ_MAX;
-	msleep(period_ms * 2 + period_ms / 2);
-	user_ctrl = st->chip_config.user_ctrl;
-	ret = regmap_write(st->map, st->reg->user_ctrl, user_ctrl);
-	if (ret)
-		return ret;
-
-	/* restore sample rate */
-	d = st->chip_config.divider;
-	ret = regmap_write(st->map, st->reg->sample_rate_div, d);
-	if (ret)
-		return ret;
+	addr += INV_MPU6050_REG_EXT_SENS_DATA;
 
 	/* check i2c status and read raw data */
 	ret = regmap_read(st->map, INV_MPU6050_REG_I2C_MST_STATUS, &status);
@@ -379,12 +355,11 @@ int inv_mpu_magn_read(const struct inv_mpu6050_state *st, int axis, int *val)
 			status & INV_MPU6050_BIT_I2C_SLV1_NACK)
 		return -EIO;
 
-	ret = regmap_bulk_read(st->map, INV_MPU6050_REG_EXT_SENS_DATA,
-			       data, sizeof(data));
+	ret = regmap_bulk_read(st->map, addr, &data, sizeof(data));
 	if (ret)
 		return ret;
 
-	*val = (int16_t)be16_to_cpu(data[addr]);
+	*val = (int16_t)be16_to_cpu(data);
 
 	return IIO_VAL_INT;
 }
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.h b/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.h
index b41bd0578478..185c000c697c 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.h
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_magn.h
@@ -10,6 +10,9 @@
 
 #include "inv_mpu_iio.h"
 
+/* Magnetometer maximum frequency */
+#define INV_MPU_MAGN_FREQ_HZ_MAX	50
+
 int inv_mpu_magn_probe(struct inv_mpu6050_state *st);
 
 /**
@@ -31,6 +34,6 @@ int inv_mpu_magn_set_rate(const struct inv_mpu6050_state *st, int fifo_rate);
 
 int inv_mpu_magn_set_orient(struct inv_mpu6050_state *st);
 
-int inv_mpu_magn_read(const struct inv_mpu6050_state *st, int axis, int *val);
+int inv_mpu_magn_read(struct inv_mpu6050_state *st, int axis, int *val);
 
 #endif		/* INV_MPU_MAGN_H_ */
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
index f9fdf4302a91..45c37525c2f1 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_ring.c
@@ -13,7 +13,6 @@
 #include <linux/interrupt.h>
 #include <linux/poll.h>
 #include <linux/math64.h>
-#include <asm/unaligned.h>
 #include "inv_mpu_iio.h"
 
 /**
@@ -90,63 +89,14 @@ static s64 inv_mpu6050_get_timestamp(struct inv_mpu6050_state *st)
 	return ts;
 }
 
-int inv_reset_fifo(struct iio_dev *indio_dev)
+static int inv_reset_fifo(struct iio_dev *indio_dev)
 {
 	int result;
-	u8 d;
 	struct inv_mpu6050_state  *st = iio_priv(indio_dev);
 
-	/* reset it timestamp validation */
-	st->it_timestamp = 0;
-
-	/* disable interrupt */
-	result = regmap_write(st->map, st->reg->int_enable, 0);
-	if (result) {
-		dev_err(regmap_get_device(st->map), "int_enable failed %d\n",
-			result);
-		return result;
-	}
-	/* disable the sensor output to FIFO */
-	result = regmap_write(st->map, st->reg->fifo_en, 0);
-	if (result)
-		goto reset_fifo_fail;
-	/* disable fifo reading */
-	result = regmap_write(st->map, st->reg->user_ctrl,
-			      st->chip_config.user_ctrl);
-	if (result)
-		goto reset_fifo_fail;
-
-	/* reset FIFO*/
-	d = st->chip_config.user_ctrl | INV_MPU6050_BIT_FIFO_RST;
-	result = regmap_write(st->map, st->reg->user_ctrl, d);
-	if (result)
-		goto reset_fifo_fail;
-
-	/* enable interrupt */
-	if (st->chip_config.accl_fifo_enable ||
-	    st->chip_config.gyro_fifo_enable ||
-	    st->chip_config.magn_fifo_enable) {
-		result = regmap_write(st->map, st->reg->int_enable,
-				      INV_MPU6050_BIT_DATA_RDY_EN);
-		if (result)
-			return result;
-	}
-	/* enable FIFO reading */
-	d = st->chip_config.user_ctrl | INV_MPU6050_BIT_FIFO_EN;
-	result = regmap_write(st->map, st->reg->user_ctrl, d);
-	if (result)
-		goto reset_fifo_fail;
-	/* enable sensor output to FIFO */
-	d = 0;
-	if (st->chip_config.gyro_fifo_enable)
-		d |= INV_MPU6050_BITS_GYRO_OUT;
-	if (st->chip_config.accl_fifo_enable)
-		d |= INV_MPU6050_BIT_ACCEL_OUT;
-	if (st->chip_config.temp_fifo_enable)
-		d |= INV_MPU6050_BIT_TEMP_OUT;
-	if (st->chip_config.magn_fifo_enable)
-		d |= INV_MPU6050_BIT_SLAVE_0;
-	result = regmap_write(st->map, st->reg->fifo_en, d);
+	/* disable fifo and reenable it */
+	inv_mpu6050_prepare_fifo(st, false);
+	result = inv_mpu6050_prepare_fifo(st, true);
 	if (result)
 		goto reset_fifo_fail;
 
@@ -160,7 +110,7 @@ reset_fifo_fail:
 	return result;
 }
 
-/**
+/*
  * inv_mpu6050_read_fifo() - Transfer data from hardware FIFO to KFIFO.
  */
 irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
@@ -170,7 +120,6 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 	size_t bytes_per_datum;
 	int result;
-	u8 data[INV_MPU6050_OUTPUT_DATA_SIZE];
 	u16 fifo_count;
 	s64 timestamp;
 	int int_status;
@@ -209,11 +158,11 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 	 * read fifo_count register to know how many bytes are inside the FIFO
 	 * right now
 	 */
-	result = regmap_bulk_read(st->map, st->reg->fifo_count_h, data,
-				  INV_MPU6050_FIFO_COUNT_BYTE);
+	result = regmap_bulk_read(st->map, st->reg->fifo_count_h,
+				  st->data, INV_MPU6050_FIFO_COUNT_BYTE);
 	if (result)
 		goto end_session;
-	fifo_count = get_unaligned_be16(&data[0]);
+	fifo_count = be16_to_cpup((__be16 *)&st->data[0]);
 
 	/*
 	 * Handle fifo overflow by resetting fifo.
@@ -230,8 +179,8 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 	nb = fifo_count / bytes_per_datum;
 	inv_mpu6050_update_period(st, pf->timestamp, nb);
 	for (i = 0; i < nb; ++i) {
-		result = regmap_bulk_read(st->map, st->reg->fifo_r_w,
-					  data, bytes_per_datum);
+		result = regmap_noinc_read(st->map, st->reg->fifo_r_w,
+					   st->data, bytes_per_datum);
 		if (result)
 			goto flush_fifo;
 		/* skip first samples if needed */
@@ -240,7 +189,7 @@ irqreturn_t inv_mpu6050_read_fifo(int irq, void *p)
 			continue;
 		}
 		timestamp = inv_mpu6050_get_timestamp(st);
-		iio_push_to_buffers_with_timestamp(indio_dev, data, timestamp);
+		iio_push_to_buffers_with_timestamp(indio_dev, st->data, timestamp);
 	}
 
 end_session:
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
index ec102d5a5c77..e6107b0cc38f 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_spi.c
@@ -2,8 +2,9 @@
 /*
 * Copyright (C) 2015 Intel Corporation Inc.
 */
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/acpi.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <linux/regmap.h>
 #include <linux/iio/iio.h>
@@ -19,10 +20,6 @@ static int inv_mpu_i2c_disable(struct iio_dev *indio_dev)
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 	int ret = 0;
 
-	ret = inv_mpu6050_set_power_itg(st, true);
-	if (ret)
-		return ret;
-
 	if (st->reg->i2c_if) {
 		ret = regmap_write(st->map, st->reg->i2c_if,
 				   INV_ICM20602_BIT_I2C_IF_DIS);
@@ -31,35 +28,32 @@ static int inv_mpu_i2c_disable(struct iio_dev *indio_dev)
 		ret = regmap_write(st->map, st->reg->user_ctrl,
 				   st->chip_config.user_ctrl);
 	}
-	if (ret) {
-		inv_mpu6050_set_power_itg(st, false);
-		return ret;
-	}
 
-	return inv_mpu6050_set_power_itg(st, false);
+	return ret;
 }
 
 static int inv_mpu_probe(struct spi_device *spi)
 {
+	const void *match;
 	struct regmap *regmap;
 	const struct spi_device_id *spi_id;
-	const struct acpi_device_id *acpi_id;
 	const char *name = NULL;
 	enum inv_devices chip_type;
 
 	if ((spi_id = spi_get_device_id(spi))) {
 		chip_type = (enum inv_devices)spi_id->driver_data;
 		name = spi_id->name;
-	} else if ((acpi_id = acpi_match_device(spi->dev.driver->acpi_match_table, &spi->dev))) {
-		chip_type = (enum inv_devices)acpi_id->driver_data;
+	} else if ((match = device_get_match_data(&spi->dev))) {
+		chip_type = (uintptr_t)match;
+		name = dev_name(&spi->dev);
 	} else {
 		return -ENODEV;
 	}
 
 	regmap = devm_regmap_init_spi(spi, &inv_mpu_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 
@@ -74,15 +68,79 @@ static int inv_mpu_probe(struct spi_device *spi)
 static const struct spi_device_id inv_mpu_id[] = {
 	{"mpu6000", INV_MPU6000},
 	{"mpu6500", INV_MPU6500},
+	{"mpu6515", INV_MPU6515},
+	{"mpu6880", INV_MPU6880},
 	{"mpu9250", INV_MPU9250},
 	{"mpu9255", INV_MPU9255},
 	{"icm20608", INV_ICM20608},
+	{"icm20608d", INV_ICM20608D},
+	{"icm20609", INV_ICM20609},
+	{"icm20689", INV_ICM20689},
 	{"icm20602", INV_ICM20602},
+	{"icm20690", INV_ICM20690},
+	{"iam20680", INV_IAM20680},
 	{}
 };
 
 MODULE_DEVICE_TABLE(spi, inv_mpu_id);
 
+static const struct of_device_id inv_of_match[] = {
+	{
+		.compatible = "invensense,mpu6000",
+		.data = (void *)INV_MPU6000
+	},
+	{
+		.compatible = "invensense,mpu6500",
+		.data = (void *)INV_MPU6500
+	},
+	{
+		.compatible = "invensense,mpu6515",
+		.data = (void *)INV_MPU6515
+	},
+	{
+		.compatible = "invensense,mpu6880",
+		.data = (void *)INV_MPU6880
+	},
+	{
+		.compatible = "invensense,mpu9250",
+		.data = (void *)INV_MPU9250
+	},
+	{
+		.compatible = "invensense,mpu9255",
+		.data = (void *)INV_MPU9255
+	},
+	{
+		.compatible = "invensense,icm20608",
+		.data = (void *)INV_ICM20608
+	},
+	{
+		.compatible = "invensense,icm20608d",
+		.data = (void *)INV_ICM20608D
+	},
+	{
+		.compatible = "invensense,icm20609",
+		.data = (void *)INV_ICM20609
+	},
+	{
+		.compatible = "invensense,icm20689",
+		.data = (void *)INV_ICM20689
+	},
+	{
+		.compatible = "invensense,icm20602",
+		.data = (void *)INV_ICM20602
+	},
+	{
+		.compatible = "invensense,icm20690",
+		.data = (void *)INV_ICM20690
+	},
+	{
+		.compatible = "invensense,iam20680",
+		.data = (void *)INV_IAM20680
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, inv_of_match);
+
 static const struct acpi_device_id inv_acpi_match[] = {
 	{"INVN6000", INV_MPU6000},
 	{ },
@@ -93,7 +151,8 @@ static struct spi_driver inv_mpu_driver = {
 	.probe		=	inv_mpu_probe,
 	.id_table	=	inv_mpu_id,
 	.driver = {
-		.acpi_match_table = ACPI_PTR(inv_acpi_match),
+		.of_match_table = inv_of_match,
+		.acpi_match_table = inv_acpi_match,
 		.name	=	"inv-mpu6000-spi",
 		.pm     =       &inv_mpu_pmops,
 	},
diff --git a/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c b/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
index 5199fe790c30..882546897255 100644
--- a/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
+++ b/drivers/iio/imu/inv_mpu6050/inv_mpu_trigger.c
@@ -3,11 +3,23 @@
 * Copyright (C) 2012 Invensense, Inc.
 */
 
+#include <linux/pm_runtime.h>
 #include "inv_mpu_iio.h"
 
-static void inv_scan_query_mpu6050(struct iio_dev *indio_dev)
+static unsigned int inv_scan_query_mpu6050(struct iio_dev *indio_dev)
 {
 	struct inv_mpu6050_state  *st = iio_priv(indio_dev);
+	unsigned int mask;
+
+	/*
+	 * If the MPU6050 is just used as a trigger, then the scan mask
+	 * is not allocated so we simply enable the temperature channel
+	 * as a dummy and bail out.
+	 */
+	if (!indio_dev->active_scan_mask) {
+		st->chip_config.temp_fifo_enable = true;
+		return INV_MPU6050_SENSOR_TEMP;
+	}
 
 	st->chip_config.gyro_fifo_enable =
 		test_bit(INV_MPU6050_SCAN_GYRO_X,
@@ -27,17 +39,28 @@ static void inv_scan_query_mpu6050(struct iio_dev *indio_dev)
 
 	st->chip_config.temp_fifo_enable =
 		test_bit(INV_MPU6050_SCAN_TEMP, indio_dev->active_scan_mask);
+
+	mask = 0;
+	if (st->chip_config.gyro_fifo_enable)
+		mask |= INV_MPU6050_SENSOR_GYRO;
+	if (st->chip_config.accl_fifo_enable)
+		mask |= INV_MPU6050_SENSOR_ACCL;
+	if (st->chip_config.temp_fifo_enable)
+		mask |= INV_MPU6050_SENSOR_TEMP;
+
+	return mask;
 }
 
-static void inv_scan_query_mpu9x50(struct iio_dev *indio_dev)
+static unsigned int inv_scan_query_mpu9x50(struct iio_dev *indio_dev)
 {
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
+	unsigned int mask;
 
-	inv_scan_query_mpu6050(indio_dev);
+	mask = inv_scan_query_mpu6050(indio_dev);
 
 	/* no magnetometer if i2c auxiliary bus is used */
 	if (st->magn_disabled)
-		return;
+		return mask;
 
 	st->chip_config.magn_fifo_enable =
 		test_bit(INV_MPU9X50_SCAN_MAGN_X,
@@ -46,9 +69,13 @@ static void inv_scan_query_mpu9x50(struct iio_dev *indio_dev)
 			 indio_dev->active_scan_mask) ||
 		test_bit(INV_MPU9X50_SCAN_MAGN_Z,
 			 indio_dev->active_scan_mask);
+	if (st->chip_config.magn_fifo_enable)
+		mask |= INV_MPU6050_SENSOR_MAGN;
+
+	return mask;
 }
 
-static void inv_scan_query(struct iio_dev *indio_dev)
+static unsigned int inv_scan_query(struct iio_dev *indio_dev)
 {
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
 
@@ -64,26 +91,63 @@ static void inv_scan_query(struct iio_dev *indio_dev)
 
 static unsigned int inv_compute_skip_samples(const struct inv_mpu6050_state *st)
 {
-	unsigned int gyro_skip = 0;
-	unsigned int magn_skip = 0;
-	unsigned int skip_samples;
-
-	/* gyro first sample is out of specs, skip it */
-	if (st->chip_config.gyro_fifo_enable)
-		gyro_skip = 1;
+	unsigned int skip_samples = 0;
 
 	/* mag first sample is always not ready, skip it */
 	if (st->chip_config.magn_fifo_enable)
-		magn_skip = 1;
-
-	/* compute first samples to skip */
-	skip_samples = gyro_skip;
-	if (magn_skip > skip_samples)
-		skip_samples = magn_skip;
+		skip_samples = 1;
 
 	return skip_samples;
 }
 
+int inv_mpu6050_prepare_fifo(struct inv_mpu6050_state *st, bool enable)
+{
+	uint8_t d;
+	int ret;
+
+	if (enable) {
+		st->it_timestamp = 0;
+		/* reset FIFO */
+		d = st->chip_config.user_ctrl | INV_MPU6050_BIT_FIFO_RST;
+		ret = regmap_write(st->map, st->reg->user_ctrl, d);
+		if (ret)
+			return ret;
+		/* enable sensor output to FIFO */
+		d = 0;
+		if (st->chip_config.gyro_fifo_enable)
+			d |= INV_MPU6050_BITS_GYRO_OUT;
+		if (st->chip_config.accl_fifo_enable)
+			d |= INV_MPU6050_BIT_ACCEL_OUT;
+		if (st->chip_config.temp_fifo_enable)
+			d |= INV_MPU6050_BIT_TEMP_OUT;
+		if (st->chip_config.magn_fifo_enable)
+			d |= INV_MPU6050_BIT_SLAVE_0;
+		ret = regmap_write(st->map, st->reg->fifo_en, d);
+		if (ret)
+			return ret;
+		/* enable FIFO reading */
+		d = st->chip_config.user_ctrl | INV_MPU6050_BIT_FIFO_EN;
+		ret = regmap_write(st->map, st->reg->user_ctrl, d);
+		if (ret)
+			return ret;
+		/* enable interrupt */
+		ret = regmap_write(st->map, st->reg->int_enable,
+				   INV_MPU6050_BIT_DATA_RDY_EN);
+	} else {
+		ret = regmap_write(st->map, st->reg->int_enable, 0);
+		if (ret)
+			return ret;
+		ret = regmap_write(st->map, st->reg->fifo_en, 0);
+		if (ret)
+			return ret;
+		/* restore user_ctrl for disabling FIFO reading */
+		ret = regmap_write(st->map, st->reg->user_ctrl,
+				   st->chip_config.user_ctrl);
+	}
+
+	return ret;
+}
+
 /**
  *  inv_mpu6050_set_enable() - enable chip functions.
  *  @indio_dev:	Device driver instance.
@@ -92,84 +156,41 @@ static unsigned int inv_compute_skip_samples(const struct inv_mpu6050_state *st)
 static int inv_mpu6050_set_enable(struct iio_dev *indio_dev, bool enable)
 {
 	struct inv_mpu6050_state *st = iio_priv(indio_dev);
-	uint8_t d;
+	struct device *pdev = regmap_get_device(st->map);
+	unsigned int scan;
 	int result;
 
 	if (enable) {
-		result = inv_mpu6050_set_power_itg(st, true);
+		scan = inv_scan_query(indio_dev);
+		result = pm_runtime_resume_and_get(pdev);
 		if (result)
 			return result;
-		inv_scan_query(indio_dev);
-		if (st->chip_config.gyro_fifo_enable) {
-			result = inv_mpu6050_switch_engine(st, true,
-					INV_MPU6050_BIT_PWR_GYRO_STBY);
-			if (result)
-				goto error_power_off;
-		}
-		if (st->chip_config.accl_fifo_enable) {
-			result = inv_mpu6050_switch_engine(st, true,
-					INV_MPU6050_BIT_PWR_ACCL_STBY);
-			if (result)
-				goto error_gyro_off;
-		}
-		if (st->chip_config.magn_fifo_enable) {
-			d = st->chip_config.user_ctrl |
-					INV_MPU6050_BIT_I2C_MST_EN;
-			result = regmap_write(st->map, st->reg->user_ctrl, d);
-			if (result)
-				goto error_accl_off;
-			st->chip_config.user_ctrl = d;
-		}
-		st->skip_samples = inv_compute_skip_samples(st);
-		result = inv_reset_fifo(indio_dev);
-		if (result)
-			goto error_magn_off;
-	} else {
-		result = regmap_write(st->map, st->reg->fifo_en, 0);
+		/*
+		 * In case autosuspend didn't trigger, turn off first not
+		 * required sensors.
+		 */
+		result = inv_mpu6050_switch_engine(st, false, ~scan);
 		if (result)
-			goto error_magn_off;
-
-		result = regmap_write(st->map, st->reg->int_enable, 0);
-		if (result)
-			goto error_magn_off;
-
-		d = st->chip_config.user_ctrl & ~INV_MPU6050_BIT_I2C_MST_EN;
-		result = regmap_write(st->map, st->reg->user_ctrl, d);
-		if (result)
-			goto error_magn_off;
-		st->chip_config.user_ctrl = d;
-
-		result = inv_mpu6050_switch_engine(st, false,
-					INV_MPU6050_BIT_PWR_ACCL_STBY);
+			goto error_power_off;
+		result = inv_mpu6050_switch_engine(st, true, scan);
 		if (result)
-			goto error_accl_off;
-
-		result = inv_mpu6050_switch_engine(st, false,
-					INV_MPU6050_BIT_PWR_GYRO_STBY);
+			goto error_power_off;
+		st->skip_samples = inv_compute_skip_samples(st);
+		result = inv_mpu6050_prepare_fifo(st, true);
 		if (result)
-			goto error_gyro_off;
-
-		result = inv_mpu6050_set_power_itg(st, false);
+			goto error_power_off;
+	} else {
+		result = inv_mpu6050_prepare_fifo(st, false);
 		if (result)
 			goto error_power_off;
+		pm_runtime_mark_last_busy(pdev);
+		pm_runtime_put_autosuspend(pdev);
 	}
 
 	return 0;
 
-error_magn_off:
-	/* always restore user_ctrl to disable fifo properly */
-	st->chip_config.user_ctrl &= ~INV_MPU6050_BIT_I2C_MST_EN;
-	regmap_write(st->map, st->reg->user_ctrl, st->chip_config.user_ctrl);
-error_accl_off:
-	if (st->chip_config.accl_fifo_enable)
-		inv_mpu6050_switch_engine(st, false,
-					  INV_MPU6050_BIT_PWR_ACCL_STBY);
-error_gyro_off:
-	if (st->chip_config.gyro_fifo_enable)
-		inv_mpu6050_switch_engine(st, false,
-					  INV_MPU6050_BIT_PWR_GYRO_STBY);
 error_power_off:
-	inv_mpu6050_set_power_itg(st, false);
+	pm_runtime_put_autosuspend(pdev);
 	return result;
 }
 
@@ -204,7 +225,7 @@ int inv_mpu6050_probe_trigger(struct iio_dev *indio_dev, int irq_type)
 	st->trig = devm_iio_trigger_alloc(&indio_dev->dev,
 					  "%s-dev%d",
 					  indio_dev->name,
-					  indio_dev->id);
+					  iio_device_id(indio_dev));
 	if (!st->trig)
 		return -ENOMEM;
 
diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c
index e67466100aff..b10c0dcac0bb 100644
--- a/drivers/iio/imu/kmx61.c
+++ b/drivers/iio/imu/kmx61.c
@@ -312,10 +312,10 @@ static int kmx61_convert_wake_up_odr_to_bit(int val, int val2)
 
 /**
  * kmx61_set_mode() - set KMX61 device operating mode
- * @data - kmx61 device private data pointer
- * @mode - bitmask, indicating operating mode for @device
- * @device - bitmask, indicating device for which @mode needs to be set
- * @update - update stby bits stored in device's private  @data
+ * @data: kmx61 device private data pointer
+ * @mode: bitmask, indicating operating mode for @device
+ * @device: bitmask, indicating device for which @mode needs to be set
+ * @update: update stby bits stored in device's private  @data
  *
  * For each sensor (accelerometer/magnetometer) there are two operating modes
  * STANDBY and OPERATION. Neither accel nor magn can be disabled independently
@@ -718,9 +718,9 @@ static int kmx61_setup_any_motion_interrupt(struct kmx61_data *data,
 
 /**
  * kmx61_set_power_state() - set power state for kmx61 @device
- * @data - kmx61 device private pointer
- * @on - power state to be set for @device
- * @device - bitmask indicating device for which @on state needs to be set
+ * @data: kmx61 device private pointer
+ * @on: power state to be set for @device
+ * @device: bitmask indicating device for which @on state needs to be set
  *
  * Notice that when ACC power state needs to be set to ON and MAG is in
  * OPERATION then we know that kmx61_runtime_resume was already called
@@ -750,7 +750,7 @@ static int kmx61_set_power_state(struct kmx61_data *data, bool on, u8 device)
 	}
 
 	if (on) {
-		ret = pm_runtime_get_sync(&data->client->dev);
+		ret = pm_runtime_resume_and_get(&data->client->dev);
 	} else {
 		pm_runtime_mark_last_busy(&data->client->dev);
 		ret = pm_runtime_put_autosuspend(&data->client->dev);
@@ -759,8 +759,6 @@ static int kmx61_set_power_state(struct kmx61_data *data, bool on, u8 device)
 		dev_err(&data->client->dev,
 			"Failed: kmx61_set_power_state for %d, ret %d\n",
 			on, ret);
-		if (on)
-			pm_runtime_put_noidle(&data->client->dev);
 
 		return ret;
 	}
@@ -1063,24 +1061,20 @@ err_unlock:
 	return ret;
 }
 
-static int kmx61_trig_try_reenable(struct iio_trigger *trig)
+static void kmx61_trig_reenable(struct iio_trigger *trig)
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct kmx61_data *data = kmx61_get_data(indio_dev);
 	int ret;
 
 	ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_INL);
-	if (ret < 0) {
+	if (ret < 0)
 		dev_err(&data->client->dev, "Error reading reg_inl\n");
-		return ret;
-	}
-
-	return 0;
 }
 
 static const struct iio_trigger_ops kmx61_trigger_ops = {
 	.set_trigger_state = kmx61_data_rdy_trigger_set_state,
-	.try_reenable = kmx61_trig_try_reenable,
+	.reenable = kmx61_trig_reenable,
 };
 
 static irqreturn_t kmx61_event_handler(int irq, void *private)
@@ -1248,7 +1242,6 @@ static struct iio_dev *kmx61_indiodev_setup(struct kmx61_data *data,
 
 	kmx61_set_data(indio_dev, data);
 
-	indio_dev->dev.parent = &data->client->dev;
 	indio_dev->channels = chan;
 	indio_dev->num_channels = num_channels;
 	indio_dev->name = name;
@@ -1269,11 +1262,10 @@ static struct iio_trigger *kmx61_trigger_setup(struct kmx61_data *data,
 				      "%s-%s-dev%d",
 				      indio_dev->name,
 				      tag,
-				      indio_dev->id);
+				      iio_device_id(indio_dev));
 	if (!trig)
 		return ERR_PTR(-ENOMEM);
 
-	trig->dev.parent = &data->client->dev;
 	trig->ops = &kmx61_trigger_ops;
 	iio_trigger_set_drvdata(trig, indio_dev);
 
@@ -1393,7 +1385,7 @@ static int kmx61_probe(struct i2c_client *client,
 	ret = iio_device_register(data->acc_indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev, "Failed to register acc iio device\n");
-		goto err_buffer_cleanup_mag;
+		goto err_pm_cleanup;
 	}
 
 	ret = iio_device_register(data->mag_indio_dev);
@@ -1406,6 +1398,9 @@ static int kmx61_probe(struct i2c_client *client,
 
 err_iio_unregister_acc:
 	iio_device_unregister(data->acc_indio_dev);
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(&client->dev);
+	pm_runtime_disable(&client->dev);
 err_buffer_cleanup_mag:
 	if (client->irq > 0)
 		iio_triggered_buffer_cleanup(data->mag_indio_dev);
@@ -1423,7 +1418,7 @@ err_chip_uninit:
 	return ret;
 }
 
-static int kmx61_remove(struct i2c_client *client)
+static void kmx61_remove(struct i2c_client *client)
 {
 	struct kmx61_data *data = i2c_get_clientdata(client);
 
@@ -1432,7 +1427,6 @@ static int kmx61_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
 	if (client->irq > 0) {
 		iio_triggered_buffer_cleanup(data->acc_indio_dev);
@@ -1445,11 +1439,8 @@ static int kmx61_remove(struct i2c_client *client)
 	mutex_lock(&data->lock);
 	kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, true);
 	mutex_unlock(&data->lock);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int kmx61_suspend(struct device *dev)
 {
 	int ret;
@@ -1475,9 +1466,7 @@ static int kmx61_resume(struct device *dev)
 
 	return kmx61_set_mode(data, stby, KMX61_ACC | KMX61_MAG, true);
 }
-#endif
 
-#ifdef CONFIG_PM
 static int kmx61_runtime_suspend(struct device *dev)
 {
 	struct kmx61_data *data = i2c_get_clientdata(to_i2c_client(dev));
@@ -1502,11 +1491,10 @@ static int kmx61_runtime_resume(struct device *dev)
 
 	return kmx61_set_mode(data, stby, KMX61_ACC | KMX61_MAG, true);
 }
-#endif
 
 static const struct dev_pm_ops kmx61_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(kmx61_suspend, kmx61_resume)
-	SET_RUNTIME_PM_OPS(kmx61_runtime_suspend, kmx61_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(kmx61_suspend, kmx61_resume)
+	RUNTIME_PM_OPS(kmx61_runtime_suspend, kmx61_runtime_resume, NULL)
 };
 
 static const struct acpi_device_id kmx61_acpi_match[] = {
@@ -1527,7 +1515,7 @@ static struct i2c_driver kmx61_driver = {
 	.driver = {
 		.name = KMX61_DRV_NAME,
 		.acpi_match_table = ACPI_PTR(kmx61_acpi_match),
-		.pm = &kmx61_pm_ops,
+		.pm = pm_ptr(&kmx61_pm_ops),
 	},
 	.probe		= kmx61_probe,
 	.remove		= kmx61_remove,
diff --git a/drivers/iio/imu/st_lsm6dsx/Kconfig b/drivers/iio/imu/st_lsm6dsx/Kconfig
index 28f59d09208a..2ed2b3f40c0b 100644
--- a/drivers/iio/imu/st_lsm6dsx/Kconfig
+++ b/drivers/iio/imu/st_lsm6dsx/Kconfig
@@ -11,9 +11,9 @@ config IIO_ST_LSM6DSX
 	help
 	  Say yes here to build support for STMicroelectronics LSM6DSx imu
 	  sensor. Supported devices: lsm6ds3, lsm6ds3h, lsm6dsl, lsm6dsm,
-	  ism330dlc, lsm6dso, lsm6dsox, asm330lhh, lsm6dsr, lsm6ds3tr-c,
-	  ism330dhcx, lsm6dsrx, lsm6ds0 and the accelerometer/gyroscope
-	  of lsm9ds1.
+	  ism330dlc, lsm6dso, lsm6dsox, asm330lhh, asm330lhhx, lsm6dsr,
+	  lsm6ds3tr-c, ism330dhcx, lsm6dsrx, lsm6ds0, lsm6dsop, lsm6dstx,
+	  the accelerometer/gyroscope of lsm9ds1 and lsm6dst.
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called st_lsm6dsx.
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index 9c3486a8134f..6b57d47be69e 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -13,6 +13,7 @@
 
 #include <linux/device.h>
 #include <linux/iio/iio.h>
+#include <linux/regulator/consumer.h>
 
 #define ST_LSM6DS3_DEV_NAME	"lsm6ds3"
 #define ST_LSM6DS3H_DEV_NAME	"lsm6ds3h"
@@ -28,6 +29,10 @@
 #define ST_LSM9DS1_DEV_NAME	"lsm9ds1-imu"
 #define ST_LSM6DS0_DEV_NAME	"lsm6ds0"
 #define ST_LSM6DSRX_DEV_NAME	"lsm6dsrx"
+#define ST_LSM6DST_DEV_NAME	"lsm6dst"
+#define ST_LSM6DSOP_DEV_NAME	"lsm6dsop"
+#define ST_ASM330LHHX_DEV_NAME	"asm330lhhx"
+#define ST_LSM6DSTX_DEV_NAME	"lsm6dstx"
 
 enum st_lsm6dsx_hw_id {
 	ST_LSM6DS3_ID,
@@ -44,6 +49,10 @@ enum st_lsm6dsx_hw_id {
 	ST_LSM9DS1_ID,
 	ST_LSM6DS0_ID,
 	ST_LSM6DSRX_ID,
+	ST_LSM6DST_ID,
+	ST_LSM6DSOP_ID,
+	ST_ASM330LHHX_ID,
+	ST_LSM6DSTX_ID,
 	ST_LSM6DSX_MAX_ID,
 };
 
@@ -111,7 +120,7 @@ struct st_lsm6dsx_odr {
 	u8 val;
 };
 
-#define ST_LSM6DSX_ODR_LIST_SIZE	6
+#define ST_LSM6DSX_ODR_LIST_SIZE	8
 struct st_lsm6dsx_odr_table_entry {
 	struct st_lsm6dsx_reg reg;
 
@@ -138,6 +147,7 @@ struct st_lsm6dsx_fs_table_entry {
  * @read_fifo: Read FIFO callback.
  * @fifo_th: FIFO threshold register info (addr + mask).
  * @fifo_diff: FIFO diff status register info (addr + mask).
+ * @max_size: Sensor max fifo length in FIFO words.
  * @th_wl: FIFO threshold word length.
  */
 struct st_lsm6dsx_fifo_ops {
@@ -151,6 +161,7 @@ struct st_lsm6dsx_fifo_ops {
 		u8 addr;
 		u16 mask;
 	} fifo_diff;
+	u16 max_size;
 	u8 th_wl;
 };
 
@@ -230,8 +241,8 @@ enum st_lsm6dsx_ext_sensor_id {
  * @i2c_addr: I2c slave address list.
  * @wai: Wai address info.
  * @id: external sensor id.
- * @odr: Output data rate of the sensor [Hz].
- * @gain: Configured sensor sensitivity.
+ * @odr_table: Output data rate of the sensor [Hz].
+ * @fs_table: Configured sensor sensitivity table depending on full scale.
  * @temp_comp: Temperature compensation register info (addr + mask).
  * @pwr_table: Power on register info (addr + mask).
  * @off_canc: Offset cancellation register info (addr + mask).
@@ -263,11 +274,9 @@ struct st_lsm6dsx_ext_dev_settings {
 
 /**
  * struct st_lsm6dsx_settings - ST IMU sensor settings
- * @wai: Sensor WhoAmI default value.
  * @reset: register address for reset.
  * @boot: register address for boot.
  * @bdu: register address for Block Data Update.
- * @max_fifo_size: Sensor max fifo length in FIFO words.
  * @id: List of hw id/device name supported by the driver configuration.
  * @channels: IIO channels supported by the device.
  * @irq_config: interrupts related registers.
@@ -281,14 +290,13 @@ struct st_lsm6dsx_ext_dev_settings {
  * @shub_settings: i2c controller related settings.
  */
 struct st_lsm6dsx_settings {
-	u8 wai;
 	struct st_lsm6dsx_reg reset;
 	struct st_lsm6dsx_reg boot;
 	struct st_lsm6dsx_reg bdu;
-	u16 max_fifo_size;
 	struct {
 		enum st_lsm6dsx_hw_id hw_id;
 		const char *name;
+		u8 wai;
 	} id[ST_LSM6DSX_MAX_ID];
 	struct {
 		const struct iio_chan_spec *chan;
@@ -337,6 +345,7 @@ enum st_lsm6dsx_fifo_mode {
  * @gain: Configured sensor sensitivity.
  * @odr: Output data rate of the sensor [Hz].
  * @watermark: Sensor watermark level.
+ * @decimator: Sensor decimation factor.
  * @sip: Number of samples in a given pattern.
  * @ts_ref: Sensor timestamp reference for hw one.
  * @ext_info: Sensor settings if it is connected to i2c controller
@@ -350,11 +359,13 @@ struct st_lsm6dsx_sensor {
 	u32 odr;
 
 	u16 watermark;
+	u8 decimator;
 	u8 sip;
 	s64 ts_ref;
 
 	struct {
 		const struct st_lsm6dsx_ext_dev_settings *settings;
+		u32 slv_odr;
 		u8 addr;
 	} ext_info;
 };
@@ -363,6 +374,7 @@ struct st_lsm6dsx_sensor {
  * struct st_lsm6dsx_hw - ST IMU MEMS hw instance
  * @dev: Pointer to instance of struct device (I2C or SPI).
  * @regmap: Register map of the device.
+ * @regulators: VDD/VDDIO voltage regulators.
  * @irq: Device interrupt line (I2C or SPI).
  * @fifo_lock: Mutex to prevent concurrent access to the hw FIFO.
  * @conf_lock: Mutex to prevent concurrent FIFO configuration update.
@@ -380,10 +392,12 @@ struct st_lsm6dsx_sensor {
  * @iio_devs: Pointers to acc/gyro iio_dev instances.
  * @settings: Pointer to the specific sensor settings in use.
  * @orientation: sensor chip orientation relative to main hardware.
+ * @scan: Temporary buffers used to align data before iio_push_to_buffers()
  */
 struct st_lsm6dsx_hw {
 	struct device *dev;
 	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
 	int irq;
 
 	struct mutex fifo_lock;
@@ -408,6 +422,11 @@ struct st_lsm6dsx_hw {
 	const struct st_lsm6dsx_settings *settings;
 
 	struct iio_mount_matrix orientation;
+	/* Ensure natural alignment of buffer elements */
+	struct {
+		__le16 channels[3];
+		s64 ts __aligned(8);
+	} scan[3];
 };
 
 static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
@@ -433,8 +452,7 @@ int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor,
 				u16 watermark);
 int st_lsm6dsx_update_fifo(struct st_lsm6dsx_sensor *sensor, bool enable);
 int st_lsm6dsx_flush_fifo(struct st_lsm6dsx_hw *hw);
-int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
-			     enum st_lsm6dsx_fifo_mode fifo_mode);
+int st_lsm6dsx_resume_fifo(struct st_lsm6dsx_hw *hw);
 int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
 int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
 int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
@@ -481,7 +499,7 @@ st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
 	return err;
 }
 
-static const inline struct iio_mount_matrix *
+static inline const struct iio_mount_matrix *
 st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
 			    const struct iio_chan_spec *chan)
 {
@@ -491,7 +509,8 @@ st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
 	return &hw->orientation;
 }
 
-static const struct iio_chan_spec_ext_info st_lsm6dsx_accel_ext_info[] = {
+static const
+struct iio_chan_spec_ext_info __maybe_unused st_lsm6dsx_accel_ext_info[] = {
 	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
 	{ }
 };
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
index bb899345f2bb..e49f2d120ed3 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_buffer.c
@@ -14,7 +14,8 @@
  * (e.g. Gx, Gy, Gz, Ax, Ay, Az), then data are repeated depending on the
  * value of the decimation factor and ODR set for each FIFO data set.
  *
- * LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/LSM6DSRX/ISM330DHCX:
+ * LSM6DSO/LSM6DSOX/ASM330LHH/ASM330LHHX/LSM6DSR/LSM6DSRX/ISM330DHCX/
+ * LSM6DST/LSM6DSOP/LSM6DSTX:
  * The FIFO buffer can be configured to store data from gyroscope and
  * accelerometer. Each sample is queued with a tag (1B) indicating data
  * source (gyroscope, accelerometer, hw timer).
@@ -93,6 +94,7 @@ st_lsm6dsx_get_decimator_val(struct st_lsm6dsx_sensor *sensor, u32 max_odr)
 			break;
 	}
 
+	sensor->decimator = decimator;
 	return i == max_size ? 0 : st_lsm6dsx_decimator_table[i].val;
 }
 
@@ -183,8 +185,8 @@ static int st_lsm6dsx_update_decimators(struct st_lsm6dsx_hw *hw)
 	return err;
 }
 
-int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
-			     enum st_lsm6dsx_fifo_mode fifo_mode)
+static int st_lsm6dsx_set_fifo_mode(struct st_lsm6dsx_hw *hw,
+				    enum st_lsm6dsx_fifo_mode fifo_mode)
 {
 	unsigned int data;
 
@@ -301,6 +303,18 @@ static int st_lsm6dsx_reset_hw_ts(struct st_lsm6dsx_hw *hw)
 	return 0;
 }
 
+int st_lsm6dsx_resume_fifo(struct st_lsm6dsx_hw *hw)
+{
+	int err;
+
+	/* reset hw ts counter */
+	err = st_lsm6dsx_reset_hw_ts(hw);
+	if (err < 0)
+		return err;
+
+	return st_lsm6dsx_set_fifo_mode(hw, ST_LSM6DSX_FIFO_CONT);
+}
+
 /*
  * Set max bulk read to ST_LSM6DSX_MAX_WORD_LEN/ST_LSM6DSX_MAX_TAGGED_WORD_LEN
  * in order to avoid a kmalloc for each bus access
@@ -337,12 +351,9 @@ static inline int st_lsm6dsx_read_block(struct st_lsm6dsx_hw *hw, u8 addr,
 int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw)
 {
 	struct st_lsm6dsx_sensor *acc_sensor, *gyro_sensor, *ext_sensor = NULL;
-	int err, acc_sip, gyro_sip, ts_sip, ext_sip, read_len, offset;
+	int err, sip, acc_sip, gyro_sip, ts_sip, ext_sip, read_len, offset;
 	u16 fifo_len, pattern_len = hw->sip * ST_LSM6DSX_SAMPLE_SIZE;
 	u16 fifo_diff_mask = hw->settings->fifo_ops.fifo_diff.mask;
-	u8 gyro_buff[ST_LSM6DSX_IIO_BUFF_SIZE];
-	u8 acc_buff[ST_LSM6DSX_IIO_BUFF_SIZE];
-	u8 ext_buff[ST_LSM6DSX_IIO_BUFF_SIZE];
 	bool reset_ts = false;
 	__le16 fifo_status;
 	s64 ts = 0;
@@ -399,22 +410,26 @@ int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw)
 		acc_sip = acc_sensor->sip;
 		ts_sip = hw->ts_sip;
 		offset = 0;
+		sip = 0;
 
 		while (acc_sip > 0 || gyro_sip > 0 || ext_sip > 0) {
-			if (gyro_sip > 0) {
-				memcpy(gyro_buff, &hw->buff[offset],
-				       ST_LSM6DSX_SAMPLE_SIZE);
-				offset += ST_LSM6DSX_SAMPLE_SIZE;
+			if (gyro_sip > 0 && !(sip % gyro_sensor->decimator)) {
+				memcpy(hw->scan[ST_LSM6DSX_ID_GYRO].channels,
+				       &hw->buff[offset],
+				       sizeof(hw->scan[ST_LSM6DSX_ID_GYRO].channels));
+				offset += sizeof(hw->scan[ST_LSM6DSX_ID_GYRO].channels);
 			}
-			if (acc_sip > 0) {
-				memcpy(acc_buff, &hw->buff[offset],
-				       ST_LSM6DSX_SAMPLE_SIZE);
-				offset += ST_LSM6DSX_SAMPLE_SIZE;
+			if (acc_sip > 0 && !(sip % acc_sensor->decimator)) {
+				memcpy(hw->scan[ST_LSM6DSX_ID_ACC].channels,
+				       &hw->buff[offset],
+				       sizeof(hw->scan[ST_LSM6DSX_ID_ACC].channels));
+				offset += sizeof(hw->scan[ST_LSM6DSX_ID_ACC].channels);
 			}
-			if (ext_sip > 0) {
-				memcpy(ext_buff, &hw->buff[offset],
-				       ST_LSM6DSX_SAMPLE_SIZE);
-				offset += ST_LSM6DSX_SAMPLE_SIZE;
+			if (ext_sip > 0 && !(sip % ext_sensor->decimator)) {
+				memcpy(hw->scan[ST_LSM6DSX_ID_EXT0].channels,
+				       &hw->buff[offset],
+				       sizeof(hw->scan[ST_LSM6DSX_ID_EXT0].channels));
+				offset += sizeof(hw->scan[ST_LSM6DSX_ID_EXT0].channels);
 			}
 
 			if (ts_sip-- > 0) {
@@ -441,18 +456,28 @@ int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw)
 				offset += ST_LSM6DSX_SAMPLE_SIZE;
 			}
 
-			if (gyro_sip-- > 0)
+			if (gyro_sip > 0 && !(sip % gyro_sensor->decimator)) {
 				iio_push_to_buffers_with_timestamp(
 					hw->iio_devs[ST_LSM6DSX_ID_GYRO],
-					gyro_buff, gyro_sensor->ts_ref + ts);
-			if (acc_sip-- > 0)
+					&hw->scan[ST_LSM6DSX_ID_GYRO],
+					gyro_sensor->ts_ref + ts);
+				gyro_sip--;
+			}
+			if (acc_sip > 0 && !(sip % acc_sensor->decimator)) {
 				iio_push_to_buffers_with_timestamp(
 					hw->iio_devs[ST_LSM6DSX_ID_ACC],
-					acc_buff, acc_sensor->ts_ref + ts);
-			if (ext_sip-- > 0)
+					&hw->scan[ST_LSM6DSX_ID_ACC],
+					acc_sensor->ts_ref + ts);
+				acc_sip--;
+			}
+			if (ext_sip > 0 && !(sip % ext_sensor->decimator)) {
 				iio_push_to_buffers_with_timestamp(
 					hw->iio_devs[ST_LSM6DSX_ID_EXT0],
-					ext_buff, ext_sensor->ts_ref + ts);
+					&hw->scan[ST_LSM6DSX_ID_EXT0],
+					ext_sensor->ts_ref + ts);
+				ext_sip--;
+			}
+			sip++;
 		}
 	}
 
@@ -534,7 +559,14 @@ int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw)
 {
 	u16 pattern_len = hw->sip * ST_LSM6DSX_TAGGED_SAMPLE_SIZE;
 	u16 fifo_len, fifo_diff_mask;
-	u8 iio_buff[ST_LSM6DSX_IIO_BUFF_SIZE], tag;
+	/*
+	 * Alignment needed as this can ultimately be passed to a
+	 * call to iio_push_to_buffers_with_timestamp() which
+	 * must be passed a buffer that is aligned to 8 bytes so
+	 * as to allow insertion of a naturally aligned timestamp.
+	 */
+	u8 iio_buff[ST_LSM6DSX_IIO_BUFF_SIZE] __aligned(8);
+	u8 tag;
 	bool reset_ts = false;
 	int i, err, read_len;
 	__le16 fifo_status;
@@ -666,12 +698,7 @@ int st_lsm6dsx_update_fifo(struct st_lsm6dsx_sensor *sensor, bool enable)
 		goto out;
 
 	if (fifo_mask) {
-		/* reset hw ts counter */
-		err = st_lsm6dsx_reset_hw_ts(hw);
-		if (err < 0)
-			goto out;
-
-		err = st_lsm6dsx_set_fifo_mode(hw, ST_LSM6DSX_FIFO_CONT);
+		err = st_lsm6dsx_resume_fifo(hw);
 		if (err < 0)
 			goto out;
 	}
@@ -713,20 +740,16 @@ static const struct iio_buffer_setup_ops st_lsm6dsx_buffer_ops = {
 
 int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw)
 {
-	struct iio_buffer *buffer;
-	int i;
+	int i, ret;
 
 	for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) {
 		if (!hw->iio_devs[i])
 			continue;
 
-		buffer = devm_iio_kfifo_allocate(hw->dev);
-		if (!buffer)
-			return -ENOMEM;
-
-		iio_device_attach_buffer(hw->iio_devs[i], buffer);
-		hw->iio_devs[i]->modes |= INDIO_BUFFER_SOFTWARE;
-		hw->iio_devs[i]->setup_ops = &st_lsm6dsx_buffer_ops;
+		ret = devm_iio_kfifo_buffer_setup(hw->dev, hw->iio_devs[i],
+						  &st_lsm6dsx_buffer_ops);
+		if (ret)
+			return ret;
 	}
 
 	return 0;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 84d219ae6aee..f8bbb005718e 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -15,19 +15,21 @@
  *
  * Supported sensors:
  * - LSM6DS3:
- *   - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416
+ *   - Accelerometer/Gyroscope supported ODR [Hz]: 12.5, 26, 52, 104, 208, 416
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
  *   - FIFO size: 8KB
  *
  * - LSM6DS3H/LSM6DSL/LSM6DSM/ISM330DLC/LSM6DS3TR-C:
- *   - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416
+ *   - Accelerometer/Gyroscope supported ODR [Hz]: 12.5, 26, 52, 104, 208, 416
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
  *   - FIFO size: 4KB
  *
- * - LSM6DSO/LSM6DSOX/ASM330LHH/LSM6DSR/ISM330DHCX:
- *   - Accelerometer/Gyroscope supported ODR [Hz]: 13, 26, 52, 104, 208, 416
+ * - LSM6DSO/LSM6DSOX/ASM330LHH/ASM330LHHX/LSM6DSR/ISM330DHCX/LSM6DST/LSM6DSOP/
+ *   LSM6DSTX:
+ *   - Accelerometer/Gyroscope supported ODR [Hz]: 12.5, 26, 52, 104, 208, 416,
+ *     833
  *   - Accelerometer supported full-scale [g]: +-2/+-4/+-8/+-16
  *   - Gyroscope supported full-scale [dps]: +-125/+-245/+-500/+-1000/+-2000
  *   - FIFO size: 3KB
@@ -53,6 +55,7 @@
 #include <linux/iio/sysfs.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
+#include <linux/minmax.h>
 #include <linux/pm.h>
 #include <linux/property.h>
 #include <linux/regmap.h>
@@ -89,7 +92,6 @@ static const struct iio_chan_spec st_lsm6ds0_gyro_channels[] = {
 
 static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 	{
-		.wai = 0x68,
 		.reset = {
 			.addr = 0x22,
 			.mask = BIT(0),
@@ -102,14 +104,15 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.addr = 0x22,
 			.mask = BIT(6),
 		},
-		.max_fifo_size = 32,
 		.id = {
 			{
 				.hw_id = ST_LSM9DS1_ID,
 				.name = ST_LSM9DS1_DEV_NAME,
+				.wai = 0x68,
 			}, {
 				.hw_id = ST_LSM6DS0_ID,
 				.name = ST_LSM6DS0_DEV_NAME,
+				.wai = 0x68,
 			},
 		},
 		.channels = {
@@ -156,10 +159,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x20,
 					.mask = GENMASK(4, 3),
 				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(732), 0x1 },
+				.fs_avl[0] = {  IIO_G_TO_M_S_2(61000), 0x0 },
+				.fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+				.fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+				.fs_avl[3] = { IIO_G_TO_M_S_2(732000), 0x1 },
 				.fs_len = 4,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -168,9 +171,9 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.mask = GENMASK(4, 3),
 				},
 
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750000), 0x0 },
+				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+				.fs_avl[2] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
 				.fs_len = 3,
 			},
 		},
@@ -192,9 +195,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.mask = BIT(4),
 			},
 		},
+		.fifo_ops = {
+			.max_size = 32,
+		},
 	},
 	{
-		.wai = 0x69,
 		.reset = {
 			.addr = 0x12,
 			.mask = BIT(0),
@@ -207,11 +212,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.addr = 0x12,
 			.mask = BIT(6),
 		},
-		.max_fifo_size = 1365,
 		.id = {
 			{
 				.hw_id = ST_LSM6DS3_ID,
 				.name = ST_LSM6DS3_DEV_NAME,
+				.wai = 0x69,
 			},
 		},
 		.channels = {
@@ -258,10 +263,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+				.fs_avl[0] = {  IIO_G_TO_M_S_2(61000), 0x0 },
+				.fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+				.fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+				.fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
 				.fs_len = 4,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -269,10 +274,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
-				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750000), 0x0 },
+				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
 				.fs_len = 4,
 			},
 		},
@@ -327,6 +332,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.addr = 0x3a,
 				.mask = GENMASK(11, 0),
 			},
+			.max_size = 1365,
 			.th_wl = 3, /* 1LSB = 2B */
 		},
 		.ts_settings = {
@@ -360,7 +366,6 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 		},
 	},
 	{
-		.wai = 0x69,
 		.reset = {
 			.addr = 0x12,
 			.mask = BIT(0),
@@ -373,11 +378,11 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.addr = 0x12,
 			.mask = BIT(6),
 		},
-		.max_fifo_size = 682,
 		.id = {
 			{
 				.hw_id = ST_LSM6DS3H_ID,
 				.name = ST_LSM6DS3H_DEV_NAME,
+				.wai = 0x69,
 			},
 		},
 		.channels = {
@@ -424,10 +429,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+				.fs_avl[0] = {  IIO_G_TO_M_S_2(61000), 0x0 },
+				.fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+				.fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+				.fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
 				.fs_len = 4,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -435,10 +440,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
-				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750000), 0x0 },
+				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
 				.fs_len = 4,
 			},
 		},
@@ -493,6 +498,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.addr = 0x3a,
 				.mask = GENMASK(11, 0),
 			},
+			.max_size = 682,
 			.th_wl = 3, /* 1LSB = 2B */
 		},
 		.ts_settings = {
@@ -526,7 +532,6 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 		},
 	},
 	{
-		.wai = 0x6a,
 		.reset = {
 			.addr = 0x12,
 			.mask = BIT(0),
@@ -539,20 +544,23 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.addr = 0x12,
 			.mask = BIT(6),
 		},
-		.max_fifo_size = 682,
 		.id = {
 			{
 				.hw_id = ST_LSM6DSL_ID,
 				.name = ST_LSM6DSL_DEV_NAME,
+				.wai = 0x6a,
 			}, {
 				.hw_id = ST_LSM6DSM_ID,
 				.name = ST_LSM6DSM_DEV_NAME,
+				.wai = 0x6a,
 			}, {
 				.hw_id = ST_ISM330DLC_ID,
 				.name = ST_ISM330DLC_DEV_NAME,
+				.wai = 0x6a,
 			}, {
 				.hw_id = ST_LSM6DS3TRC_ID,
 				.name = ST_LSM6DS3TRC_DEV_NAME,
+				.wai = 0x6a,
 			},
 		},
 		.channels = {
@@ -599,10 +607,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+				.fs_avl[0] = {  IIO_G_TO_M_S_2(61000), 0x0 },
+				.fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+				.fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+				.fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
 				.fs_len = 4,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -610,10 +618,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
-				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750000), 0x0 },
+				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
 				.fs_len = 4,
 			},
 		},
@@ -672,6 +680,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.addr = 0x3a,
 				.mask = GENMASK(10, 0),
 			},
+			.max_size = 682,
 			.th_wl = 3, /* 1LSB = 2B */
 		},
 		.ts_settings = {
@@ -742,7 +751,6 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 		},
 	},
 	{
-		.wai = 0x6c,
 		.reset = {
 			.addr = 0x12,
 			.mask = BIT(0),
@@ -755,14 +763,39 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.addr = 0x12,
 			.mask = BIT(6),
 		},
-		.max_fifo_size = 512,
 		.id = {
 			{
+				.hw_id = ST_LSM6DSR_ID,
+				.name = ST_LSM6DSR_DEV_NAME,
+				.wai = 0x6b,
+			}, {
+				.hw_id = ST_ISM330DHCX_ID,
+				.name = ST_ISM330DHCX_DEV_NAME,
+				.wai = 0x6b,
+			}, {
+				.hw_id = ST_LSM6DSRX_ID,
+				.name = ST_LSM6DSRX_DEV_NAME,
+				.wai = 0x6b,
+			}, {
 				.hw_id = ST_LSM6DSO_ID,
 				.name = ST_LSM6DSO_DEV_NAME,
+				.wai = 0x6c,
 			}, {
 				.hw_id = ST_LSM6DSOX_ID,
 				.name = ST_LSM6DSOX_DEV_NAME,
+				.wai = 0x6c,
+			}, {
+				.hw_id = ST_LSM6DST_ID,
+				.name = ST_LSM6DST_DEV_NAME,
+				.wai = 0x6d,
+			}, {
+				.hw_id = ST_ASM330LHHX_ID,
+				.name = ST_ASM330LHHX_DEV_NAME,
+				.wai = 0x6b,
+			}, {
+				.hw_id = ST_LSM6DSTX_ID,
+				.name = ST_LSM6DSTX_DEV_NAME,
+				.wai = 0x6d,
 			},
 		},
 		.channels = {
@@ -791,7 +824,8 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -804,7 +838,8 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 		},
 		.fs_table = {
@@ -813,10 +848,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+				.fs_avl[0] = {  IIO_G_TO_M_S_2(61000), 0x0 },
+				.fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+				.fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+				.fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
 				.fs_len = 4,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -824,10 +859,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
-				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750000), 0x0 },
+				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
 				.fs_len = 4,
 			},
 		},
@@ -886,6 +921,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.addr = 0x3a,
 				.mask = GENMASK(9, 0),
 			},
+			.max_size = 512,
 			.th_wl = 1,
 		},
 		.ts_settings = {
@@ -948,7 +984,6 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 		},
 	},
 	{
-		.wai = 0x6b,
 		.reset = {
 			.addr = 0x12,
 			.mask = BIT(0),
@@ -961,188 +996,15 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.addr = 0x12,
 			.mask = BIT(6),
 		},
-		.max_fifo_size = 512,
 		.id = {
 			{
 				.hw_id = ST_ASM330LHH_ID,
 				.name = ST_ASM330LHH_DEV_NAME,
-			},
-		},
-		.channels = {
-			[ST_LSM6DSX_ID_ACC] = {
-				.chan = st_lsm6dsx_acc_channels,
-				.len = ARRAY_SIZE(st_lsm6dsx_acc_channels),
-			},
-			[ST_LSM6DSX_ID_GYRO] = {
-				.chan = st_lsm6dsx_gyro_channels,
-				.len = ARRAY_SIZE(st_lsm6dsx_gyro_channels),
-			},
-		},
-		.drdy_mask = {
-			.addr = 0x13,
-			.mask = BIT(3),
-		},
-		.odr_table = {
-			[ST_LSM6DSX_ID_ACC] = {
-				.reg = {
-					.addr = 0x10,
-					.mask = GENMASK(7, 4),
-				},
-				.odr_avl[0] = {  12500, 0x01 },
-				.odr_avl[1] = {  26000, 0x02 },
-				.odr_avl[2] = {  52000, 0x03 },
-				.odr_avl[3] = { 104000, 0x04 },
-				.odr_avl[4] = { 208000, 0x05 },
-				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
-			},
-			[ST_LSM6DSX_ID_GYRO] = {
-				.reg = {
-					.addr = 0x11,
-					.mask = GENMASK(7, 4),
-				},
-				.odr_avl[0] = {  12500, 0x01 },
-				.odr_avl[1] = {  26000, 0x02 },
-				.odr_avl[2] = {  52000, 0x03 },
-				.odr_avl[3] = { 104000, 0x04 },
-				.odr_avl[4] = { 208000, 0x05 },
-				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
-			},
-		},
-		.fs_table = {
-			[ST_LSM6DSX_ID_ACC] = {
-				.reg = {
-					.addr = 0x10,
-					.mask = GENMASK(3, 2),
-				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
-				.fs_len = 4,
-			},
-			[ST_LSM6DSX_ID_GYRO] = {
-				.reg = {
-					.addr = 0x11,
-					.mask = GENMASK(3, 2),
-				},
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
-				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
-				.fs_len = 4,
-			},
-		},
-		.irq_config = {
-			.irq1 = {
-				.addr = 0x0d,
-				.mask = BIT(3),
-			},
-			.irq2 = {
-				.addr = 0x0e,
-				.mask = BIT(3),
-			},
-			.lir = {
-				.addr = 0x56,
-				.mask = BIT(0),
-			},
-			.clear_on_read = {
-				.addr = 0x56,
-				.mask = BIT(6),
-			},
-			.irq1_func = {
-				.addr = 0x5e,
-				.mask = BIT(5),
-			},
-			.irq2_func = {
-				.addr = 0x5f,
-				.mask = BIT(5),
-			},
-			.hla = {
-				.addr = 0x12,
-				.mask = BIT(5),
-			},
-			.od = {
-				.addr = 0x12,
-				.mask = BIT(4),
-			},
-		},
-		.batch = {
-			[ST_LSM6DSX_ID_ACC] = {
-				.addr = 0x09,
-				.mask = GENMASK(3, 0),
-			},
-			[ST_LSM6DSX_ID_GYRO] = {
-				.addr = 0x09,
-				.mask = GENMASK(7, 4),
-			},
-		},
-		.fifo_ops = {
-			.update_fifo = st_lsm6dsx_update_fifo,
-			.read_fifo = st_lsm6dsx_read_tagged_fifo,
-			.fifo_th = {
-				.addr = 0x07,
-				.mask = GENMASK(8, 0),
-			},
-			.fifo_diff = {
-				.addr = 0x3a,
-				.mask = GENMASK(9, 0),
-			},
-			.th_wl = 1,
-		},
-		.ts_settings = {
-			.timer_en = {
-				.addr = 0x19,
-				.mask = BIT(5),
-			},
-			.decimator = {
-				.addr = 0x0a,
-				.mask = GENMASK(7, 6),
-			},
-			.freq_fine = 0x63,
-		},
-		.event_settings = {
-			.enable_reg = {
-				.addr = 0x58,
-				.mask = BIT(7),
-			},
-			.wakeup_reg = {
-				.addr = 0x5B,
-				.mask = GENMASK(5, 0),
-			},
-			.wakeup_src_reg = 0x1b,
-			.wakeup_src_status_mask = BIT(3),
-			.wakeup_src_z_mask = BIT(0),
-			.wakeup_src_y_mask = BIT(1),
-			.wakeup_src_x_mask = BIT(2),
-		},
-	},
-	{
-		.wai = 0x6b,
-		.reset = {
-			.addr = 0x12,
-			.mask = BIT(0),
-		},
-		.boot = {
-			.addr = 0x12,
-			.mask = BIT(7),
-		},
-		.bdu = {
-			.addr = 0x12,
-			.mask = BIT(6),
-		},
-		.max_fifo_size = 512,
-		.id = {
-			{
-				.hw_id = ST_LSM6DSR_ID,
-				.name = ST_LSM6DSR_DEV_NAME,
+				.wai = 0x6b,
 			}, {
-				.hw_id = ST_ISM330DHCX_ID,
-				.name = ST_ISM330DHCX_DEV_NAME,
-			}, {
-				.hw_id = ST_LSM6DSRX_ID,
-				.name = ST_LSM6DSRX_DEV_NAME,
+				.hw_id = ST_LSM6DSOP_ID,
+				.name = ST_LSM6DSOP_DEV_NAME,
+				.wai = 0x6c,
 			},
 		},
 		.channels = {
@@ -1171,7 +1033,8 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
 				.reg = {
@@ -1184,7 +1047,8 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.odr_avl[3] = { 104000, 0x04 },
 				.odr_avl[4] = { 208000, 0x05 },
 				.odr_avl[5] = { 416000, 0x06 },
-				.odr_len = 6,
+				.odr_avl[6] = { 833000, 0x07 },
+				.odr_len = 7,
 			},
 		},
 		.fs_table = {
@@ -1193,10 +1057,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x10,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_G_TO_M_S_2(61), 0x0 },
-				.fs_avl[1] = { IIO_G_TO_M_S_2(122), 0x2 },
-				.fs_avl[2] = { IIO_G_TO_M_S_2(244), 0x3 },
-				.fs_avl[3] = { IIO_G_TO_M_S_2(488), 0x1 },
+				.fs_avl[0] = {  IIO_G_TO_M_S_2(61000), 0x0 },
+				.fs_avl[1] = { IIO_G_TO_M_S_2(122000), 0x2 },
+				.fs_avl[2] = { IIO_G_TO_M_S_2(244000), 0x3 },
+				.fs_avl[3] = { IIO_G_TO_M_S_2(488000), 0x1 },
 				.fs_len = 4,
 			},
 			[ST_LSM6DSX_ID_GYRO] = {
@@ -1204,10 +1068,10 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 					.addr = 0x11,
 					.mask = GENMASK(3, 2),
 				},
-				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750), 0x0 },
-				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500), 0x1 },
-				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000), 0x2 },
-				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000), 0x3 },
+				.fs_avl[0] = {  IIO_DEGREE_TO_RAD(8750000), 0x0 },
+				.fs_avl[1] = { IIO_DEGREE_TO_RAD(17500000), 0x1 },
+				.fs_avl[2] = { IIO_DEGREE_TO_RAD(35000000), 0x2 },
+				.fs_avl[3] = { IIO_DEGREE_TO_RAD(70000000), 0x3 },
 				.fs_len = 4,
 			},
 		},
@@ -1266,6 +1130,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 				.addr = 0x3a,
 				.mask = GENMASK(9, 0),
 			},
+			.max_size = 512,
 			.th_wl = 1,
 		},
 		.ts_settings = {
@@ -1279,38 +1144,6 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			},
 			.freq_fine = 0x63,
 		},
-		.shub_settings = {
-			.page_mux = {
-				.addr = 0x01,
-				.mask = BIT(6),
-			},
-			.master_en = {
-				.sec_page = true,
-				.addr = 0x14,
-				.mask = BIT(2),
-			},
-			.pullup_en = {
-				.sec_page = true,
-				.addr = 0x14,
-				.mask = BIT(3),
-			},
-			.aux_sens = {
-				.addr = 0x14,
-				.mask = GENMASK(1, 0),
-			},
-			.wr_once = {
-				.addr = 0x14,
-				.mask = BIT(6),
-			},
-			.num_ext_dev = 3,
-			.shub_out = {
-				.sec_page = true,
-				.addr = 0x02,
-			},
-			.slv0_addr = 0x15,
-			.dw_slv0_addr = 0x21,
-			.batch_en = BIT(3),
-		},
 		.event_settings = {
 			.enable_reg = {
 				.addr = 0x58,
@@ -1325,7 +1158,7 @@ static const struct st_lsm6dsx_settings st_lsm6dsx_sensor_settings[] = {
 			.wakeup_src_z_mask = BIT(0),
 			.wakeup_src_y_mask = BIT(1),
 			.wakeup_src_x_mask = BIT(2),
-		}
+		},
 	},
 };
 
@@ -1370,7 +1203,7 @@ static int st_lsm6dsx_check_whoami(struct st_lsm6dsx_hw *hw, int id,
 		return err;
 	}
 
-	if (data != st_lsm6dsx_sensor_settings[i].wai) {
+	if (data != st_lsm6dsx_sensor_settings[i].id[j].wai) {
 		dev_err(hw->dev, "unsupported whoami [%02x]\n", data);
 		return -ENODEV;
 	}
@@ -1458,6 +1291,8 @@ st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u32 req_odr)
 	int err;
 
 	switch (sensor->id) {
+	case ST_LSM6DSX_ID_GYRO:
+		break;
 	case ST_LSM6DSX_ID_EXT0:
 	case ST_LSM6DSX_ID_EXT1:
 	case ST_LSM6DSX_ID_EXT2:
@@ -1483,8 +1318,8 @@ st_lsm6dsx_set_odr(struct st_lsm6dsx_sensor *sensor, u32 req_odr)
 		}
 		break;
 	}
-	default:
-		break;
+	default: /* should never occur */
+		return -EINVAL;
 	}
 
 	if (req_odr > 0) {
@@ -1549,8 +1384,12 @@ static int st_lsm6dsx_read_oneshot(struct st_lsm6dsx_sensor *sensor,
 	if (err < 0)
 		return err;
 
+	/*
+	 * we need to wait for sensor settling time before
+	 * reading data in order to avoid corrupted samples
+	 */
 	delay = 1000000000 / sensor->odr;
-	usleep_range(delay, 2 * delay);
+	usleep_range(3 * delay, 4 * delay);
 
 	err = st_lsm6dsx_read_locked(hw, addr, &data, sizeof(data));
 	if (err < 0)
@@ -1591,7 +1430,7 @@ static int st_lsm6dsx_read_raw(struct iio_dev *iio_dev,
 	case IIO_CHAN_INFO_SCALE:
 		*val = 0;
 		*val2 = sensor->gain;
-		ret = IIO_VAL_INT_PLUS_MICRO;
+		ret = IIO_VAL_INT_PLUS_NANO;
 		break;
 	default:
 		ret = -EINVAL;
@@ -1782,8 +1621,7 @@ int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val)
 	struct st_lsm6dsx_hw *hw = sensor->hw;
 	int err;
 
-	if (val < 1 || val > hw->settings->max_fifo_size)
-		return -EINVAL;
+	val = clamp_val(val, 1, hw->settings->fifo_ops.max_size);
 
 	mutex_lock(&hw->conf_lock);
 
@@ -1804,7 +1642,7 @@ st_lsm6dsx_sysfs_sampling_frequency_avail(struct device *dev,
 					  struct device_attribute *attr,
 					  char *buf)
 {
-	struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev));
+	struct st_lsm6dsx_sensor *sensor = iio_priv(dev_to_iio_dev(dev));
 	const struct st_lsm6dsx_odr_table_entry *odr_table;
 	int i, len = 0;
 
@@ -1822,20 +1660,38 @@ static ssize_t st_lsm6dsx_sysfs_scale_avail(struct device *dev,
 					    struct device_attribute *attr,
 					    char *buf)
 {
-	struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev));
+	struct st_lsm6dsx_sensor *sensor = iio_priv(dev_to_iio_dev(dev));
 	const struct st_lsm6dsx_fs_table_entry *fs_table;
 	struct st_lsm6dsx_hw *hw = sensor->hw;
 	int i, len = 0;
 
 	fs_table = &hw->settings->fs_table[sensor->id];
 	for (i = 0; i < fs_table->fs_len; i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ",
+		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%09u ",
 				 fs_table->fs_avl[i].gain);
 	buf[len - 1] = '\n';
 
 	return len;
 }
 
+static int st_lsm6dsx_write_raw_get_fmt(struct iio_dev *indio_dev,
+					struct iio_chan_spec const *chan,
+					long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_ANGL_VEL:
+		case IIO_ACCEL:
+			return IIO_VAL_INT_PLUS_NANO;
+		default:
+			return IIO_VAL_INT_PLUS_MICRO;
+		}
+	default:
+		return IIO_VAL_INT_PLUS_MICRO;
+	}
+}
+
 static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(st_lsm6dsx_sysfs_sampling_frequency_avail);
 static IIO_DEVICE_ATTR(in_accel_scale_available, 0444,
 		       st_lsm6dsx_sysfs_scale_avail, NULL, 0);
@@ -1861,6 +1717,7 @@ static const struct iio_info st_lsm6dsx_acc_info = {
 	.read_event_config = st_lsm6dsx_read_event_config,
 	.write_event_config = st_lsm6dsx_write_event_config,
 	.hwfifo_set_watermark = st_lsm6dsx_set_watermark,
+	.write_raw_get_fmt = st_lsm6dsx_write_raw_get_fmt,
 };
 
 static struct attribute *st_lsm6dsx_gyro_attributes[] = {
@@ -1878,6 +1735,7 @@ static const struct iio_info st_lsm6dsx_gyro_info = {
 	.read_raw = st_lsm6dsx_read_raw,
 	.write_raw = st_lsm6dsx_write_raw,
 	.hwfifo_set_watermark = st_lsm6dsx_set_watermark,
+	.write_raw_get_fmt = st_lsm6dsx_write_raw_get_fmt,
 };
 
 static int st_lsm6dsx_get_drdy_pin(struct st_lsm6dsx_hw *hw, int *drdy_pin)
@@ -2036,11 +1894,21 @@ static int st_lsm6dsx_init_hw_timer(struct st_lsm6dsx_hw *hw)
 	return 0;
 }
 
-static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
+static int st_lsm6dsx_reset_device(struct st_lsm6dsx_hw *hw)
 {
 	const struct st_lsm6dsx_reg *reg;
 	int err;
 
+	/*
+	 * flush hw FIFO before device reset in order to avoid
+	 * possible races on interrupt line 1. If the first interrupt
+	 * line is asserted during hw reset the device will work in
+	 * I3C-only mode (if it is supported)
+	 */
+	err = st_lsm6dsx_flush_fifo(hw);
+	if (err < 0 && err != -ENOTSUPP)
+		return err;
+
 	/* device sw reset */
 	reg = &hw->settings->reset;
 	err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
@@ -2059,6 +1927,18 @@ static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
 
 	msleep(50);
 
+	return 0;
+}
+
+static int st_lsm6dsx_init_device(struct st_lsm6dsx_hw *hw)
+{
+	const struct st_lsm6dsx_reg *reg;
+	int err;
+
+	err = st_lsm6dsx_reset_device(hw);
+	if (err < 0)
+		return err;
+
 	/* enable Block Data Update */
 	reg = &hw->settings->bdu;
 	err = regmap_update_bits(hw->regmap, reg->addr, reg->mask,
@@ -2123,7 +2003,6 @@ static struct iio_dev *st_lsm6dsx_alloc_iiodev(struct st_lsm6dsx_hw *hw,
 		return NULL;
 
 	iio_dev->modes = INDIO_DIRECT_MODE;
-	iio_dev->dev.parent = hw->dev;
 	iio_dev->available_scan_masks = st_lsm6dsx_available_scan_masks;
 	iio_dev->channels = hw->settings->channels[id].chan;
 	iio_dev->num_channels = hw->settings->channels[id].len;
@@ -2207,19 +2086,35 @@ st_lsm6dsx_report_motion_event(struct st_lsm6dsx_hw *hw)
 static irqreturn_t st_lsm6dsx_handler_thread(int irq, void *private)
 {
 	struct st_lsm6dsx_hw *hw = private;
+	int fifo_len = 0, len;
 	bool event;
-	int count;
 
 	event = st_lsm6dsx_report_motion_event(hw);
 
 	if (!hw->settings->fifo_ops.read_fifo)
 		return event ? IRQ_HANDLED : IRQ_NONE;
 
-	mutex_lock(&hw->fifo_lock);
-	count = hw->settings->fifo_ops.read_fifo(hw);
-	mutex_unlock(&hw->fifo_lock);
-
-	return count || event ? IRQ_HANDLED : IRQ_NONE;
+	/*
+	 * If we are using edge IRQs, new samples can arrive while
+	 * processing current interrupt since there are no hw
+	 * guarantees the irq line stays "low" long enough to properly
+	 * detect the new interrupt. In this case the new sample will
+	 * be missed.
+	 * Polling FIFO status register allow us to read new
+	 * samples even if the interrupt arrives while processing
+	 * previous data and the timeslot where the line is "low" is
+	 * too short to be properly detected.
+	 */
+	do {
+		mutex_lock(&hw->fifo_lock);
+		len = hw->settings->fifo_ops.read_fifo(hw);
+		mutex_unlock(&hw->fifo_lock);
+
+		if (len > 0)
+			fifo_len += len;
+	} while (len > 0);
+
+	return fifo_len || event ? IRQ_HANDLED : IRQ_NONE;
 }
 
 static int st_lsm6dsx_irq_setup(struct st_lsm6dsx_hw *hw)
@@ -2280,6 +2175,38 @@ static int st_lsm6dsx_irq_setup(struct st_lsm6dsx_hw *hw)
 	return 0;
 }
 
+static int st_lsm6dsx_init_regulators(struct device *dev)
+{
+	struct st_lsm6dsx_hw *hw = dev_get_drvdata(dev);
+	int err;
+
+	/* vdd-vddio power regulators */
+	hw->regulators[0].supply = "vdd";
+	hw->regulators[1].supply = "vddio";
+	err = devm_regulator_bulk_get(dev, ARRAY_SIZE(hw->regulators),
+				      hw->regulators);
+	if (err)
+		return dev_err_probe(dev, err, "failed to get regulators\n");
+
+	err = regulator_bulk_enable(ARRAY_SIZE(hw->regulators),
+				    hw->regulators);
+	if (err) {
+		dev_err(dev, "failed to enable regulators: %d\n", err);
+		return err;
+	}
+
+	msleep(50);
+
+	return 0;
+}
+
+static void st_lsm6dsx_chip_uninit(void *data)
+{
+	struct st_lsm6dsx_hw *hw = data;
+
+	regulator_bulk_disable(ARRAY_SIZE(hw->regulators), hw->regulators);
+}
+
 int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 		     struct regmap *regmap)
 {
@@ -2299,6 +2226,14 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 	mutex_init(&hw->conf_lock);
 	mutex_init(&hw->page_lock);
 
+	err = st_lsm6dsx_init_regulators(dev);
+	if (err)
+		return err;
+
+	err = devm_add_action_or_reset(dev, st_lsm6dsx_chip_uninit, hw);
+	if (err)
+		return err;
+
 	hw->buff = devm_kzalloc(dev, ST_LSM6DSX_BUFF_SIZE, GFP_KERNEL);
 	if (!hw->buff)
 		return -ENOMEM;
@@ -2322,7 +2257,9 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 		return err;
 
 	hub_settings = &hw->settings->shub_settings;
-	if (hub_settings->master_en.addr) {
+	if (hub_settings->master_en.addr &&
+	    (!dev_fwnode(dev) ||
+	     !device_property_read_bool(dev, "st,disable-sensor-hub"))) {
 		err = st_lsm6dsx_shub_probe(hw, name);
 		if (err < 0)
 			return err;
@@ -2338,7 +2275,7 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 			return err;
 	}
 
-	err = iio_read_mount_matrix(hw->dev, "mount-matrix", &hw->orientation);
+	err = iio_read_mount_matrix(hw->dev, &hw->orientation);
 	if (err)
 		return err;
 
@@ -2357,9 +2294,9 @@ int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
 
 	return 0;
 }
-EXPORT_SYMBOL(st_lsm6dsx_probe);
+EXPORT_SYMBOL_NS(st_lsm6dsx_probe, IIO_LSM6DSX);
 
-static int __maybe_unused st_lsm6dsx_suspend(struct device *dev)
+static int st_lsm6dsx_suspend(struct device *dev)
 {
 	struct st_lsm6dsx_hw *hw = dev_get_drvdata(dev);
 	struct st_lsm6dsx_sensor *sensor;
@@ -2398,7 +2335,7 @@ static int __maybe_unused st_lsm6dsx_suspend(struct device *dev)
 	return err;
 }
 
-static int __maybe_unused st_lsm6dsx_resume(struct device *dev)
+static int st_lsm6dsx_resume(struct device *dev)
 {
 	struct st_lsm6dsx_hw *hw = dev_get_drvdata(dev);
 	struct st_lsm6dsx_sensor *sensor;
@@ -2429,15 +2366,13 @@ static int __maybe_unused st_lsm6dsx_resume(struct device *dev)
 	}
 
 	if (hw->fifo_mask)
-		err = st_lsm6dsx_set_fifo_mode(hw, ST_LSM6DSX_FIFO_CONT);
+		err = st_lsm6dsx_resume_fifo(hw);
 
 	return err;
 }
 
-const struct dev_pm_ops st_lsm6dsx_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(st_lsm6dsx_suspend, st_lsm6dsx_resume)
-};
-EXPORT_SYMBOL(st_lsm6dsx_pm_ops);
+EXPORT_NS_SIMPLE_DEV_PM_OPS(st_lsm6dsx_pm_ops, st_lsm6dsx_suspend,
+			    st_lsm6dsx_resume, IIO_LSM6DSX);
 
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
index 0fb32131afce..307c8c436862 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i2c.c
@@ -29,8 +29,7 @@ static int st_lsm6dsx_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &st_lsm6dsx_i2c_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -94,6 +93,22 @@ static const struct of_device_id st_lsm6dsx_i2c_of_match[] = {
 		.compatible = "st,lsm6dsrx",
 		.data = (void *)ST_LSM6DSRX_ID,
 	},
+	{
+		.compatible = "st,lsm6dst",
+		.data = (void *)ST_LSM6DST_ID,
+	},
+	{
+		.compatible = "st,lsm6dsop",
+		.data = (void *)ST_LSM6DSOP_ID,
+	},
+	{
+		.compatible = "st,asm330lhhx",
+		.data = (void *)ST_ASM330LHHX_ID,
+	},
+	{
+		.compatible = "st,lsm6dstx",
+		.data = (void *)ST_LSM6DSTX_ID,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_lsm6dsx_i2c_of_match);
@@ -113,6 +128,10 @@ static const struct i2c_device_id st_lsm6dsx_i2c_id_table[] = {
 	{ ST_LSM9DS1_DEV_NAME, ST_LSM9DS1_ID },
 	{ ST_LSM6DS0_DEV_NAME, ST_LSM6DS0_ID },
 	{ ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID },
+	{ ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID },
+	{ ST_LSM6DSOP_DEV_NAME, ST_LSM6DSOP_ID },
+	{ ST_ASM330LHHX_DEV_NAME, ST_ASM330LHHX_ID },
+	{ ST_LSM6DSTX_DEV_NAME, ST_LSM6DSTX_ID },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);
@@ -120,7 +139,7 @@ MODULE_DEVICE_TABLE(i2c, st_lsm6dsx_i2c_id_table);
 static struct i2c_driver st_lsm6dsx_driver = {
 	.driver = {
 		.name = "st_lsm6dsx_i2c",
-		.pm = &st_lsm6dsx_pm_ops,
+		.pm = pm_sleep_ptr(&st_lsm6dsx_pm_ops),
 		.of_match_table = st_lsm6dsx_i2c_of_match,
 	},
 	.probe = st_lsm6dsx_i2c_probe,
@@ -132,3 +151,4 @@ MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_LSM6DSX);
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
index 57e633121bdc..3b0c8b19c448 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_i3c.c
@@ -6,11 +6,11 @@
  */
 
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/i3c/device.h>
 #include <linux/i3c/master.h>
 #include <linux/slab.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 
 #include "st_lsm6dsx.h"
@@ -34,8 +34,7 @@ static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
 
 	regmap = devm_regmap_init_i3c(i3cdev, &st_lsm6dsx_i3c_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&i3cdev->dev, "Failed to register i3c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&i3cdev->dev, "Failed to register i3c regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -45,7 +44,7 @@ static int st_lsm6dsx_i3c_probe(struct i3c_device *i3cdev)
 static struct i3c_driver st_lsm6dsx_driver = {
 	.driver = {
 		.name = "st_lsm6dsx_i3c",
-		.pm = &st_lsm6dsx_pm_ops,
+		.pm = pm_sleep_ptr(&st_lsm6dsx_pm_ops),
 	},
 	.probe = st_lsm6dsx_i3c_probe,
 	.id_table = st_lsm6dsx_i3c_ids,
@@ -55,3 +54,4 @@ module_i3c_driver(st_lsm6dsx_driver);
 MODULE_AUTHOR("Vitor Soares <vitor.soares@synopsys.com>");
 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx i3c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_LSM6DSX);
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
index eea555617d4a..99562ba85ee4 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_shub.c
@@ -88,19 +88,84 @@ static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
 			.len = 6,
 		},
 	},
+	/* LIS3MDL */
+	{
+		.i2c_addr = { 0x1e },
+		.wai = {
+			.addr = 0x0f,
+			.val = 0x3d,
+		},
+		.id = ST_LSM6DSX_ID_MAGN,
+		.odr_table = {
+			.reg = {
+				.addr = 0x20,
+				.mask = GENMASK(4, 2),
+			},
+			.odr_avl[0] = {  1000, 0x0 },
+			.odr_avl[1] = {  2000, 0x1 },
+			.odr_avl[2] = {  3000, 0x2 },
+			.odr_avl[3] = {  5000, 0x3 },
+			.odr_avl[4] = { 10000, 0x4 },
+			.odr_avl[5] = { 20000, 0x5 },
+			.odr_avl[6] = { 40000, 0x6 },
+			.odr_avl[7] = { 80000, 0x7 },
+			.odr_len = 8,
+		},
+		.fs_table = {
+			.reg = {
+				.addr = 0x21,
+				.mask = GENMASK(6, 5),
+			},
+			.fs_avl[0] = {
+				.gain = 146,
+				.val = 0x00,
+			}, /* 4000 uG/LSB */
+			.fs_avl[1] = {
+				.gain = 292,
+				.val = 0x01,
+			}, /* 8000 uG/LSB */
+			.fs_avl[2] = {
+				.gain = 438,
+				.val = 0x02,
+			}, /* 12000 uG/LSB */
+			.fs_avl[3] = {
+				.gain = 584,
+				.val = 0x03,
+			}, /* 16000 uG/LSB */
+			.fs_len = 4,
+		},
+		.pwr_table = {
+			.reg = {
+				.addr = 0x22,
+				.mask = GENMASK(1, 0),
+			},
+			.off_val = 0x2,
+			.on_val = 0x0,
+		},
+		.bdu = {
+			.addr = 0x24,
+			.mask = BIT(6),
+		},
+		.out = {
+			.addr = 0x28,
+			.len = 6,
+		},
+	},
 };
 
 static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
 {
 	struct st_lsm6dsx_sensor *sensor;
-	u32 odr;
+	u32 odr, timeout;
 
 	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
 	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 12500;
-	msleep((2000000U / odr) + 1);
+	/* set 10ms as minimum timeout for i2c slave configuration */
+	timeout = max_t(u32, 2000000U / odr + 1, 10);
+	msleep(timeout);
 }
 
-/**
+/*
  * st_lsm6dsx_shub_read_output - read i2c controller register
  *
  * Read st_lsm6dsx i2c controller register
@@ -132,7 +197,7 @@ out:
 	return err;
 }
 
-/**
+/*
  * st_lsm6dsx_shub_write_reg - write i2c controller register
  *
  * Write st_lsm6dsx i2c controller register
@@ -210,7 +275,7 @@ out:
 	return err;
 }
 
-/**
+/*
  * st_lsm6dsx_shub_read - read data from slave device register
  *
  * Read data from slave device register. SLV0 is used for
@@ -250,6 +315,8 @@ st_lsm6dsx_shub_read(struct st_lsm6dsx_sensor *sensor, u8 addr,
 
 	err = st_lsm6dsx_shub_read_output(hw, data,
 					  len & ST_LS6DSX_READ_OP_MASK);
+	if (err < 0)
+		return err;
 
 	st_lsm6dsx_shub_master_enable(sensor, false);
 
@@ -260,7 +327,7 @@ st_lsm6dsx_shub_read(struct st_lsm6dsx_sensor *sensor, u8 addr,
 					 sizeof(config));
 }
 
-/**
+/*
  * st_lsm6dsx_shub_write - write data to slave device register
  *
  * Write data from slave device register. SLV0 is used for
@@ -421,7 +488,8 @@ int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable)
 
 	settings = sensor->ext_info.settings;
 	if (enable) {
-		err = st_lsm6dsx_shub_set_odr(sensor, sensor->odr);
+		err = st_lsm6dsx_shub_set_odr(sensor,
+					      sensor->ext_info.slv_odr);
 		if (err < 0)
 			return err;
 	} else {
@@ -459,14 +527,15 @@ st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
 	if (err < 0)
 		return err;
 
-	delay = 1000000000 / sensor->odr;
+	delay = 1000000000 / sensor->ext_info.slv_odr;
 	usleep_range(delay, 2 * delay);
 
 	len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3);
 	err = st_lsm6dsx_shub_read(sensor, ch->address, data, len);
+	if (err < 0)
+		return err;
 
-	st_lsm6dsx_shub_set_enable(sensor, false);
-
+	err = st_lsm6dsx_shub_set_enable(sensor, false);
 	if (err < 0)
 		return err;
 
@@ -499,8 +568,8 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
 		iio_device_release_direct_mode(iio_dev);
 		break;
 	case IIO_CHAN_INFO_SAMP_FREQ:
-		*val = sensor->odr / 1000;
-		*val2 = (sensor->odr % 1000) * 1000;
+		*val = sensor->ext_info.slv_odr / 1000;
+		*val2 = (sensor->ext_info.slv_odr % 1000) * 1000;
 		ret = IIO_VAL_INT_PLUS_MICRO;
 		break;
 	case IIO_CHAN_INFO_SCALE:
@@ -517,6 +586,36 @@ st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
 }
 
 static int
+st_lsm6dsx_shub_set_full_scale(struct st_lsm6dsx_sensor *sensor,
+			       u32 gain)
+{
+	const struct st_lsm6dsx_fs_table_entry *fs_table;
+	int i, err;
+
+	fs_table = &sensor->ext_info.settings->fs_table;
+	if (!fs_table->reg.addr)
+		return -ENOTSUPP;
+
+	for (i = 0; i < fs_table->fs_len; i++) {
+		if (fs_table->fs_avl[i].gain == gain)
+			break;
+	}
+
+	if (i == fs_table->fs_len)
+		return -EINVAL;
+
+	err = st_lsm6dsx_shub_write_with_mask(sensor, fs_table->reg.addr,
+					      fs_table->reg.mask,
+					      fs_table->fs_avl[i].val);
+	if (err < 0)
+		return err;
+
+	sensor->gain = gain;
+
+	return 0;
+}
+
+static int
 st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
 			  struct iio_chan_spec const *chan,
 			  int val, int val2, long mask)
@@ -534,15 +633,33 @@ st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
 
 		val = val * 1000 + val2 / 1000;
 		err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
-		if (!err)
-			sensor->odr = val;
+		if (!err) {
+			struct st_lsm6dsx_hw *hw = sensor->hw;
+			struct st_lsm6dsx_sensor *ref_sensor;
+			u8 odr_val;
+			int odr;
+
+			ref_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
+			odr = st_lsm6dsx_check_odr(ref_sensor, val, &odr_val);
+			if (odr < 0) {
+				err = odr;
+				goto release;
+			}
+
+			sensor->ext_info.slv_odr = val;
+			sensor->odr = odr;
+		}
 		break;
 	}
+	case IIO_CHAN_INFO_SCALE:
+		err = st_lsm6dsx_shub_set_full_scale(sensor, val2);
+		break;
 	default:
 		err = -EINVAL;
 		break;
 	}
 
+release:
 	iio_device_release_direct_mode(iio_dev);
 
 	return err;
@@ -612,6 +729,7 @@ st_lsm6dsx_shub_alloc_iiodev(struct st_lsm6dsx_hw *hw,
 			     const struct st_lsm6dsx_ext_dev_settings *info,
 			     u8 i2c_addr, const char *name)
 {
+	enum st_lsm6dsx_sensor_id ref_id = ST_LSM6DSX_ID_ACC;
 	struct iio_chan_spec *ext_channels;
 	struct st_lsm6dsx_sensor *sensor;
 	struct iio_dev *iio_dev;
@@ -621,13 +739,13 @@ st_lsm6dsx_shub_alloc_iiodev(struct st_lsm6dsx_hw *hw,
 		return NULL;
 
 	iio_dev->modes = INDIO_DIRECT_MODE;
-	iio_dev->dev.parent = hw->dev;
 	iio_dev->info = &st_lsm6dsx_ext_info;
 
 	sensor = iio_priv(iio_dev);
 	sensor->id = id;
 	sensor->hw = hw;
-	sensor->odr = info->odr_table.odr_avl[0].milli_hz;
+	sensor->odr = hw->settings->odr_table[ref_id].odr_avl[0].milli_hz;
+	sensor->ext_info.slv_odr = info->odr_table.odr_avl[0].milli_hz;
 	sensor->gain = info->fs_table.fs_avl[0].gain;
 	sensor->ext_info.settings = info;
 	sensor->ext_info.addr = i2c_addr;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
index eb1086e4a951..6a4eecf4bb05 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_spi.c
@@ -29,8 +29,7 @@ static int st_lsm6dsx_spi_probe(struct spi_device *spi)
 
 	regmap = devm_regmap_init_spi(spi, &st_lsm6dsx_spi_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap %ld\n", PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -94,6 +93,22 @@ static const struct of_device_id st_lsm6dsx_spi_of_match[] = {
 		.compatible = "st,lsm6dsrx",
 		.data = (void *)ST_LSM6DSRX_ID,
 	},
+	{
+		.compatible = "st,lsm6dst",
+		.data = (void *)ST_LSM6DST_ID,
+	},
+	{
+		.compatible = "st,lsm6dsop",
+		.data = (void *)ST_LSM6DSOP_ID,
+	},
+	{
+		.compatible = "st,asm330lhhx",
+		.data = (void *)ST_ASM330LHHX_ID,
+	},
+	{
+		.compatible = "st,lsm6dstx",
+		.data = (void *)ST_LSM6DSTX_ID,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_lsm6dsx_spi_of_match);
@@ -113,6 +128,10 @@ static const struct spi_device_id st_lsm6dsx_spi_id_table[] = {
 	{ ST_LSM9DS1_DEV_NAME, ST_LSM9DS1_ID },
 	{ ST_LSM6DS0_DEV_NAME, ST_LSM6DS0_ID },
 	{ ST_LSM6DSRX_DEV_NAME, ST_LSM6DSRX_ID },
+	{ ST_LSM6DST_DEV_NAME, ST_LSM6DST_ID },
+	{ ST_LSM6DSOP_DEV_NAME, ST_LSM6DSOP_ID },
+	{ ST_ASM330LHHX_DEV_NAME, ST_ASM330LHHX_ID },
+	{ ST_LSM6DSTX_DEV_NAME, ST_LSM6DSTX_ID },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
@@ -120,7 +139,7 @@ MODULE_DEVICE_TABLE(spi, st_lsm6dsx_spi_id_table);
 static struct spi_driver st_lsm6dsx_driver = {
 	.driver = {
 		.name = "st_lsm6dsx_spi",
-		.pm = &st_lsm6dsx_pm_ops,
+		.pm = pm_sleep_ptr(&st_lsm6dsx_pm_ops),
 		.of_match_table = st_lsm6dsx_spi_of_match,
 	},
 	.probe = st_lsm6dsx_spi_probe,
@@ -132,3 +151,4 @@ MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi@st.com>");
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics st_lsm6dsx spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_LSM6DSX);
diff --git a/drivers/iio/imu/st_lsm9ds0/Kconfig b/drivers/iio/imu/st_lsm9ds0/Kconfig
new file mode 100644
index 000000000000..d29558edee60
--- /dev/null
+++ b/drivers/iio/imu/st_lsm9ds0/Kconfig
@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+config IIO_ST_LSM9DS0
+	tristate "STMicroelectronics LSM9DS0 IMU driver"
+	depends on (I2C || SPI_MASTER) && SYSFS
+	depends on !SENSORS_LIS3_I2C
+	depends on !SENSORS_LIS3_SPI
+	select IIO_ST_ACCEL_3AXIS
+	select IIO_ST_MAGN_3AXIS
+
+	help
+	  Say yes here to build support for STMicroelectronics LSM9DS0 IMU
+	  sensor. Supported devices: accelerometer/magnetometer of lsm9ds0.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called st_lsm9ds0.
+
+	  Also need to enable at least one of I2C and SPI interface drivers
+
+config IIO_ST_LSM9DS0_I2C
+	tristate "STMicroelectronics LSM9DS0 IMU I2C interface"
+	depends on I2C && IIO_ST_LSM9DS0
+	default I2C && IIO_ST_LSM9DS0
+	select IIO_ST_ACCEL_I2C_3AXIS
+	select IIO_ST_MAGN_I2C_3AXIS
+	select REGMAP_I2C
+	help
+	  Build support for STMicroelectronics LSM9DS0 IMU I2C interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_lsm9ds0_i2c.
+
+config IIO_ST_LSM9DS0_SPI
+	tristate "STMicroelectronics LSM9DS0 IMU SPI interface"
+	depends on SPI_MASTER && IIO_ST_LSM9DS0
+	default SPI_MASTER && IIO_ST_LSM9DS0
+	select IIO_ST_ACCEL_SPI_3AXIS
+	select IIO_ST_MAGN_SPI_3AXIS
+	select REGMAP_SPI
+	help
+	  Build support for STMicroelectronics LSM9DS0 IMU I2C interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_lsm9ds0_spi.
diff --git a/drivers/iio/imu/st_lsm9ds0/Makefile b/drivers/iio/imu/st_lsm9ds0/Makefile
new file mode 100644
index 000000000000..488af523f648
--- /dev/null
+++ b/drivers/iio/imu/st_lsm9ds0/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0-only
+obj-$(CONFIG_IIO_ST_LSM9DS0) += st_lsm9ds0.o
+st_lsm9ds0-y := st_lsm9ds0_core.o
+obj-$(CONFIG_IIO_ST_LSM9DS0_I2C) += st_lsm9ds0_i2c.o
+obj-$(CONFIG_IIO_ST_LSM9DS0_SPI) += st_lsm9ds0_spi.o
diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0.h b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0.h
new file mode 100644
index 000000000000..76678cdefb07
--- /dev/null
+++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0.h
@@ -0,0 +1,22 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+// STMicroelectronics LSM9DS0 IMU driver
+
+#ifndef ST_LSM9DS0_H
+#define ST_LSM9DS0_H
+
+struct iio_dev;
+struct regulator;
+
+struct st_lsm9ds0 {
+	struct device *dev;
+	const char *name;
+	int irq;
+	struct iio_dev *accel;
+	struct iio_dev *magn;
+	struct regulator *vdd;
+	struct regulator *vdd_io;
+};
+
+int st_lsm9ds0_probe(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap);
+
+#endif /* ST_LSM9DS0_H */
diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_core.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_core.c
new file mode 100644
index 000000000000..ae7bc815382f
--- /dev/null
+++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_core.c
@@ -0,0 +1,150 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * STMicroelectronics LSM9DS0 IMU driver
+ *
+ * Copyright (C) 2021, Intel Corporation
+ *
+ * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+ */
+
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+
+#include <linux/iio/common/st_sensors.h>
+#include <linux/iio/iio.h>
+
+#include "st_lsm9ds0.h"
+
+static int st_lsm9ds0_power_enable(struct device *dev, struct st_lsm9ds0 *lsm9ds0)
+{
+	int ret;
+
+	/* Regulators not mandatory, but if requested we should enable them. */
+	lsm9ds0->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(lsm9ds0->vdd))
+		return dev_err_probe(dev, PTR_ERR(lsm9ds0->vdd),
+				     "unable to get Vdd supply\n");
+
+	ret = regulator_enable(lsm9ds0->vdd);
+	if (ret) {
+		dev_warn(dev, "Failed to enable specified Vdd supply\n");
+		return ret;
+	}
+
+	lsm9ds0->vdd_io = devm_regulator_get(dev, "vddio");
+	if (IS_ERR(lsm9ds0->vdd_io)) {
+		regulator_disable(lsm9ds0->vdd);
+		return dev_err_probe(dev, PTR_ERR(lsm9ds0->vdd_io),
+				     "unable to get Vdd_IO supply\n");
+	}
+	ret = regulator_enable(lsm9ds0->vdd_io);
+	if (ret) {
+		dev_warn(dev, "Failed to enable specified Vdd_IO supply\n");
+		regulator_disable(lsm9ds0->vdd);
+		return ret;
+	}
+
+	return 0;
+}
+
+static void st_lsm9ds0_power_disable(void *data)
+{
+	struct st_lsm9ds0 *lsm9ds0 = data;
+
+	regulator_disable(lsm9ds0->vdd_io);
+	regulator_disable(lsm9ds0->vdd);
+}
+
+static int devm_st_lsm9ds0_power_enable(struct st_lsm9ds0 *lsm9ds0)
+{
+	struct device *dev = lsm9ds0->dev;
+	int ret;
+
+	ret = st_lsm9ds0_power_enable(dev, lsm9ds0);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, st_lsm9ds0_power_disable, lsm9ds0);
+}
+
+static int st_lsm9ds0_probe_accel(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap)
+{
+	const struct st_sensor_settings *settings;
+	struct device *dev = lsm9ds0->dev;
+	struct st_sensor_data *data;
+
+	settings = st_accel_get_settings(lsm9ds0->name);
+	if (!settings) {
+		dev_err(dev, "device name %s not recognized.\n", lsm9ds0->name);
+		return -ENODEV;
+	}
+
+	lsm9ds0->accel = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!lsm9ds0->accel)
+		return -ENOMEM;
+
+	lsm9ds0->accel->name = lsm9ds0->name;
+
+	data = iio_priv(lsm9ds0->accel);
+	data->sensor_settings = (struct st_sensor_settings *)settings;
+	data->irq = lsm9ds0->irq;
+	data->regmap = regmap;
+	data->vdd = lsm9ds0->vdd;
+	data->vdd_io = lsm9ds0->vdd_io;
+
+	return st_accel_common_probe(lsm9ds0->accel);
+}
+
+static int st_lsm9ds0_probe_magn(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap)
+{
+	const struct st_sensor_settings *settings;
+	struct device *dev = lsm9ds0->dev;
+	struct st_sensor_data *data;
+
+	settings = st_magn_get_settings(lsm9ds0->name);
+	if (!settings) {
+		dev_err(dev, "device name %s not recognized.\n", lsm9ds0->name);
+		return -ENODEV;
+	}
+
+	lsm9ds0->magn = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!lsm9ds0->magn)
+		return -ENOMEM;
+
+	lsm9ds0->magn->name = lsm9ds0->name;
+
+	data = iio_priv(lsm9ds0->magn);
+	data->sensor_settings = (struct st_sensor_settings *)settings;
+	data->irq = lsm9ds0->irq;
+	data->regmap = regmap;
+	data->vdd = lsm9ds0->vdd;
+	data->vdd_io = lsm9ds0->vdd_io;
+
+	return st_magn_common_probe(lsm9ds0->magn);
+}
+
+int st_lsm9ds0_probe(struct st_lsm9ds0 *lsm9ds0, struct regmap *regmap)
+{
+	int ret;
+
+	ret = devm_st_lsm9ds0_power_enable(lsm9ds0);
+	if (ret)
+		return ret;
+
+	/* Setup accelerometer device */
+	ret = st_lsm9ds0_probe_accel(lsm9ds0, regmap);
+	if (ret)
+		return ret;
+
+	/* Setup magnetometer device */
+	return st_lsm9ds0_probe_magn(lsm9ds0, regmap);
+}
+EXPORT_SYMBOL_NS_GPL(st_lsm9ds0_probe, IIO_ST_SENSORS);
+
+MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
+MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU core driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c
new file mode 100644
index 000000000000..a90138d8b06a
--- /dev/null
+++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_i2c.c
@@ -0,0 +1,80 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * STMicroelectronics LSM9DS0 IMU driver
+ *
+ * Copyright (C) 2021, Intel Corporation
+ *
+ * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+ */
+
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/common/st_sensors_i2c.h>
+
+#include "st_lsm9ds0.h"
+
+static const struct of_device_id st_lsm9ds0_of_match[] = {
+	{
+		.compatible = "st,lsm9ds0-imu",
+		.data = LSM9DS0_IMU_DEV_NAME,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
+
+static const struct i2c_device_id st_lsm9ds0_id_table[] = {
+	{ LSM9DS0_IMU_DEV_NAME },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, st_lsm9ds0_id_table);
+
+static const struct regmap_config st_lsm9ds0_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.read_flag_mask	= 0x80,
+};
+
+static int st_lsm9ds0_i2c_probe(struct i2c_client *client)
+{
+	const struct regmap_config *config = &st_lsm9ds0_regmap_config;
+	struct device *dev = &client->dev;
+	struct st_lsm9ds0 *lsm9ds0;
+	struct regmap *regmap;
+
+	st_sensors_dev_name_probe(dev, client->name, sizeof(client->name));
+
+	lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
+	if (!lsm9ds0)
+		return -ENOMEM;
+
+	lsm9ds0->dev = dev;
+	lsm9ds0->name = client->name;
+	lsm9ds0->irq = client->irq;
+
+	regmap = devm_regmap_init_i2c(client, config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	i2c_set_clientdata(client, lsm9ds0);
+
+	return st_lsm9ds0_probe(lsm9ds0, regmap);
+}
+
+static struct i2c_driver st_lsm9ds0_driver = {
+	.driver = {
+		.name = "st-lsm9ds0-i2c",
+		.of_match_table = st_lsm9ds0_of_match,
+	},
+	.probe_new = st_lsm9ds0_i2c_probe,
+	.id_table = st_lsm9ds0_id_table,
+};
+module_i2c_driver(st_lsm9ds0_driver);
+
+MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
+MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU I2C driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c
new file mode 100644
index 000000000000..b743bf3546a7
--- /dev/null
+++ b/drivers/iio/imu/st_lsm9ds0/st_lsm9ds0_spi.c
@@ -0,0 +1,79 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * STMicroelectronics LSM9DS0 IMU driver
+ *
+ * Copyright (C) 2021, Intel Corporation
+ *
+ * Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/regmap.h>
+#include <linux/spi/spi.h>
+
+#include <linux/iio/common/st_sensors_spi.h>
+
+#include "st_lsm9ds0.h"
+
+static const struct of_device_id st_lsm9ds0_of_match[] = {
+	{
+		.compatible = "st,lsm9ds0-imu",
+		.data = LSM9DS0_IMU_DEV_NAME,
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, st_lsm9ds0_of_match);
+
+static const struct spi_device_id st_lsm9ds0_id_table[] = {
+	{ LSM9DS0_IMU_DEV_NAME },
+	{}
+};
+MODULE_DEVICE_TABLE(spi, st_lsm9ds0_id_table);
+
+static const struct regmap_config st_lsm9ds0_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.read_flag_mask	= 0xc0,
+};
+
+static int st_lsm9ds0_spi_probe(struct spi_device *spi)
+{
+	struct device *dev = &spi->dev;
+	struct st_lsm9ds0 *lsm9ds0;
+	struct regmap *regmap;
+
+	st_sensors_dev_name_probe(dev, spi->modalias, sizeof(spi->modalias));
+
+	lsm9ds0 = devm_kzalloc(dev, sizeof(*lsm9ds0), GFP_KERNEL);
+	if (!lsm9ds0)
+		return -ENOMEM;
+
+	lsm9ds0->dev = dev;
+	lsm9ds0->name = spi->modalias;
+	lsm9ds0->irq = spi->irq;
+
+	regmap = devm_regmap_init_spi(spi, &st_lsm9ds0_regmap_config);
+	if (IS_ERR(regmap))
+		return PTR_ERR(regmap);
+
+	spi_set_drvdata(spi, lsm9ds0);
+
+	return st_lsm9ds0_probe(lsm9ds0, regmap);
+}
+
+static struct spi_driver st_lsm9ds0_driver = {
+	.driver = {
+		.name = "st-lsm9ds0-spi",
+		.of_match_table = st_lsm9ds0_of_match,
+	},
+	.probe = st_lsm9ds0_spi_probe,
+	.id_table = st_lsm9ds0_id_table,
+};
+module_spi_driver(st_lsm9ds0_driver);
+
+MODULE_AUTHOR("Andy Shevchenko <andriy.shevchenko@linux.intel.com>");
+MODULE_DESCRIPTION("STMicroelectronics LSM9DS0 IMU SPI driver");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/industrialio-buffer.c b/drivers/iio/industrialio-buffer.c
index 4ada5592aa2b..228598b82a2f 100644
--- a/drivers/iio/industrialio-buffer.c
+++ b/drivers/iio/industrialio-buffer.c
@@ -9,9 +9,11 @@
  * - Better memory allocation techniques?
  * - Alternative access techniques?
  */
+#include <linux/anon_inodes.h>
 #include <linux/kernel.h>
 #include <linux/export.h>
 #include <linux/device.h>
+#include <linux/file.h>
 #include <linux/fs.h>
 #include <linux/cdev.h>
 #include <linux/slab.h>
@@ -19,7 +21,9 @@
 #include <linux/sched/signal.h>
 
 #include <linux/iio/iio.h>
+#include <linux/iio/iio-opaque.h>
 #include "iio_core.h"
+#include "iio_core_trigger.h"
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/buffer_impl.h>
@@ -87,7 +91,7 @@ static bool iio_buffer_ready(struct iio_dev *indio_dev, struct iio_buffer *buf,
 }
 
 /**
- * iio_buffer_read_outer() - chrdev read for buffer access
+ * iio_buffer_read() - chrdev read for buffer access
  * @filp:	File structure pointer for the char device
  * @buf:	Destination buffer for iio buffer read
  * @n:		First n bytes to read
@@ -99,11 +103,12 @@ static bool iio_buffer_ready(struct iio_dev *indio_dev, struct iio_buffer *buf,
  * Return: negative values corresponding to error codes or ret != 0
  *	   for ending the reading activity
  **/
-ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
-			      size_t n, loff_t *f_ps)
+static ssize_t iio_buffer_read(struct file *filp, char __user *buf,
+			       size_t n, loff_t *f_ps)
 {
-	struct iio_dev *indio_dev = filp->private_data;
-	struct iio_buffer *rb = indio_dev->buffer;
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_buffer *rb = ib->buffer;
+	struct iio_dev *indio_dev = ib->indio_dev;
 	DEFINE_WAIT_FUNC(wait, woken_wake_function);
 	size_t datum_size;
 	size_t to_wait;
@@ -115,6 +120,9 @@ ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
 	if (!rb || !rb->access->read)
 		return -EINVAL;
 
+	if (rb->direction != IIO_BUFFER_DIRECTION_IN)
+		return -EPERM;
+
 	datum_size = rb->bytes_per_datum;
 
 	/*
@@ -156,6 +164,65 @@ ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
 	return ret;
 }
 
+static size_t iio_buffer_space_available(struct iio_buffer *buf)
+{
+	if (buf->access->space_available)
+		return buf->access->space_available(buf);
+
+	return SIZE_MAX;
+}
+
+static ssize_t iio_buffer_write(struct file *filp, const char __user *buf,
+				size_t n, loff_t *f_ps)
+{
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_buffer *rb = ib->buffer;
+	struct iio_dev *indio_dev = ib->indio_dev;
+	DEFINE_WAIT_FUNC(wait, woken_wake_function);
+	int ret = 0;
+	size_t written;
+
+	if (!indio_dev->info)
+		return -ENODEV;
+
+	if (!rb || !rb->access->write)
+		return -EINVAL;
+
+	if (rb->direction != IIO_BUFFER_DIRECTION_OUT)
+		return -EPERM;
+
+	written = 0;
+	add_wait_queue(&rb->pollq, &wait);
+	do {
+		if (indio_dev->info == NULL)
+			return -ENODEV;
+
+		if (!iio_buffer_space_available(rb)) {
+			if (signal_pending(current)) {
+				ret = -ERESTARTSYS;
+				break;
+			}
+
+			wait_woken(&wait, TASK_INTERRUPTIBLE,
+					MAX_SCHEDULE_TIMEOUT);
+			continue;
+		}
+
+		ret = rb->access->write(rb, n - written, buf + written);
+		if (ret == 0 && (filp->f_flags & O_NONBLOCK))
+			ret = -EAGAIN;
+
+		if (ret > 0) {
+			written += ret;
+			if (written != n && !(filp->f_flags & O_NONBLOCK))
+				continue;
+		}
+	} while (ret == 0);
+	remove_wait_queue(&rb->pollq, &wait);
+
+	return ret < 0 ? ret : n;
+}
+
 /**
  * iio_buffer_poll() - poll the buffer to find out if it has data
  * @filp:	File structure pointer for device access
@@ -165,21 +232,71 @@ ssize_t iio_buffer_read_outer(struct file *filp, char __user *buf,
  * Return: (EPOLLIN | EPOLLRDNORM) if data is available for reading
  *	   or 0 for other cases
  */
-__poll_t iio_buffer_poll(struct file *filp,
-			     struct poll_table_struct *wait)
+static __poll_t iio_buffer_poll(struct file *filp,
+				struct poll_table_struct *wait)
 {
-	struct iio_dev *indio_dev = filp->private_data;
-	struct iio_buffer *rb = indio_dev->buffer;
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_buffer *rb = ib->buffer;
+	struct iio_dev *indio_dev = ib->indio_dev;
 
 	if (!indio_dev->info || rb == NULL)
 		return 0;
 
 	poll_wait(filp, &rb->pollq, wait);
-	if (iio_buffer_ready(indio_dev, rb, rb->watermark, 0))
-		return EPOLLIN | EPOLLRDNORM;
+
+	switch (rb->direction) {
+	case IIO_BUFFER_DIRECTION_IN:
+		if (iio_buffer_ready(indio_dev, rb, rb->watermark, 0))
+			return EPOLLIN | EPOLLRDNORM;
+		break;
+	case IIO_BUFFER_DIRECTION_OUT:
+		if (iio_buffer_space_available(rb))
+			return EPOLLOUT | EPOLLWRNORM;
+		break;
+	}
+
 	return 0;
 }
 
+ssize_t iio_buffer_read_wrapper(struct file *filp, char __user *buf,
+				size_t n, loff_t *f_ps)
+{
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_buffer *rb = ib->buffer;
+
+	/* check if buffer was opened through new API */
+	if (test_bit(IIO_BUSY_BIT_POS, &rb->flags))
+		return -EBUSY;
+
+	return iio_buffer_read(filp, buf, n, f_ps);
+}
+
+ssize_t iio_buffer_write_wrapper(struct file *filp, const char __user *buf,
+				 size_t n, loff_t *f_ps)
+{
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_buffer *rb = ib->buffer;
+
+	/* check if buffer was opened through new API */
+	if (test_bit(IIO_BUSY_BIT_POS, &rb->flags))
+		return -EBUSY;
+
+	return iio_buffer_write(filp, buf, n, f_ps);
+}
+
+__poll_t iio_buffer_poll_wrapper(struct file *filp,
+				 struct poll_table_struct *wait)
+{
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_buffer *rb = ib->buffer;
+
+	/* check if buffer was opened through new API */
+	if (test_bit(IIO_BUSY_BIT_POS, &rb->flags))
+		return 0;
+
+	return iio_buffer_poll(filp, wait);
+}
+
 /**
  * iio_buffer_wakeup_poll - Wakes up the buffer waitqueue
  * @indio_dev: The IIO device
@@ -189,12 +306,25 @@ __poll_t iio_buffer_poll(struct file *filp,
  */
 void iio_buffer_wakeup_poll(struct iio_dev *indio_dev)
 {
-	if (!indio_dev->buffer)
-		return;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_buffer *buffer;
+	unsigned int i;
 
-	wake_up(&indio_dev->buffer->pollq);
+	for (i = 0; i < iio_dev_opaque->attached_buffers_cnt; i++) {
+		buffer = iio_dev_opaque->attached_buffers[i];
+		wake_up(&buffer->pollq);
+	}
 }
 
+int iio_pop_from_buffer(struct iio_buffer *buffer, void *data)
+{
+	if (!buffer || !buffer->access || !buffer->access->remove_from)
+		return -EINVAL;
+
+	return buffer->access->remove_from(buffer, data);
+}
+EXPORT_SYMBOL_GPL(iio_pop_from_buffer);
+
 void iio_buffer_init(struct iio_buffer *buffer)
 {
 	INIT_LIST_HEAD(&buffer->demux_list);
@@ -206,23 +336,25 @@ void iio_buffer_init(struct iio_buffer *buffer)
 }
 EXPORT_SYMBOL(iio_buffer_init);
 
-/**
- * iio_buffer_set_attrs - Set buffer specific attributes
- * @buffer: The buffer for which we are setting attributes
- * @attrs: Pointer to a null terminated list of pointers to attributes
- */
-void iio_buffer_set_attrs(struct iio_buffer *buffer,
-			 const struct attribute **attrs)
+void iio_device_detach_buffers(struct iio_dev *indio_dev)
 {
-	buffer->attrs = attrs;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_buffer *buffer;
+	unsigned int i;
+
+	for (i = 0; i < iio_dev_opaque->attached_buffers_cnt; i++) {
+		buffer = iio_dev_opaque->attached_buffers[i];
+		iio_buffer_put(buffer);
+	}
+
+	kfree(iio_dev_opaque->attached_buffers);
 }
-EXPORT_SYMBOL_GPL(iio_buffer_set_attrs);
 
 static ssize_t iio_show_scan_index(struct device *dev,
 				   struct device_attribute *attr,
 				   char *buf)
 {
-	return sprintf(buf, "%u\n", to_iio_dev_attr(attr)->c->scan_index);
+	return sysfs_emit(buf, "%u\n", to_iio_dev_attr(attr)->c->scan_index);
 }
 
 static ssize_t iio_show_fixed_type(struct device *dev,
@@ -240,15 +372,15 @@ static ssize_t iio_show_fixed_type(struct device *dev,
 #endif
 	}
 	if (this_attr->c->scan_type.repeat > 1)
-		return sprintf(buf, "%s:%c%d/%dX%d>>%u\n",
+		return sysfs_emit(buf, "%s:%c%d/%dX%d>>%u\n",
 		       iio_endian_prefix[type],
 		       this_attr->c->scan_type.sign,
 		       this_attr->c->scan_type.realbits,
 		       this_attr->c->scan_type.storagebits,
 		       this_attr->c->scan_type.repeat,
 		       this_attr->c->scan_type.shift);
-		else
-			return sprintf(buf, "%s:%c%d/%d>>%u\n",
+	else
+		return sysfs_emit(buf, "%s:%c%d/%d>>%u\n",
 		       iio_endian_prefix[type],
 		       this_attr->c->scan_type.sign,
 		       this_attr->c->scan_type.realbits,
@@ -261,13 +393,13 @@ static ssize_t iio_scan_el_show(struct device *dev,
 				char *buf)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
 	/* Ensure ret is 0 or 1. */
 	ret = !!test_bit(to_iio_dev_attr(attr)->address,
-		       indio_dev->buffer->scan_mask);
+		       buffer->scan_mask);
 
-	return sprintf(buf, "%d\n", ret);
+	return sysfs_emit(buf, "%d\n", ret);
 }
 
 /* Note NULL used as error indicator as it doesn't make sense. */
@@ -316,14 +448,14 @@ static int iio_scan_mask_set(struct iio_dev *indio_dev,
 	const unsigned long *mask;
 	unsigned long *trialmask;
 
-	trialmask = kcalloc(BITS_TO_LONGS(indio_dev->masklength),
-			    sizeof(*trialmask), GFP_KERNEL);
-	if (trialmask == NULL)
-		return -ENOMEM;
 	if (!indio_dev->masklength) {
 		WARN(1, "Trying to set scanmask prior to registering buffer\n");
-		goto err_invalid_mask;
+		return -EINVAL;
 	}
+
+	trialmask = bitmap_alloc(indio_dev->masklength, GFP_KERNEL);
+	if (!trialmask)
+		return -ENOMEM;
 	bitmap_copy(trialmask, buffer->scan_mask, indio_dev->masklength);
 	set_bit(bit, trialmask);
 
@@ -375,14 +507,14 @@ static ssize_t iio_scan_el_store(struct device *dev,
 	int ret;
 	bool state;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct iio_buffer *buffer = indio_dev->buffer;
 	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	struct iio_buffer *buffer = this_attr->buffer;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 	mutex_lock(&indio_dev->mlock);
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 		goto error_ret;
 	}
@@ -410,8 +542,9 @@ static ssize_t iio_scan_el_ts_show(struct device *dev,
 				   struct device_attribute *attr,
 				   char *buf)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	return sprintf(buf, "%d\n", indio_dev->buffer->scan_timestamp);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
+
+	return sysfs_emit(buf, "%d\n", buffer->scan_timestamp);
 }
 
 static ssize_t iio_scan_el_ts_store(struct device *dev,
@@ -421,18 +554,19 @@ static ssize_t iio_scan_el_ts_store(struct device *dev,
 {
 	int ret;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	bool state;
 
-	ret = strtobool(buf, &state);
+	ret = kstrtobool(buf, &state);
 	if (ret < 0)
 		return ret;
 
 	mutex_lock(&indio_dev->mlock);
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 		goto error_ret;
 	}
-	indio_dev->buffer->scan_timestamp = state;
+	buffer->scan_timestamp = state;
 error_ret:
 	mutex_unlock(&indio_dev->mlock);
 
@@ -440,10 +574,10 @@ error_ret:
 }
 
 static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
+					struct iio_buffer *buffer,
 					const struct iio_chan_spec *chan)
 {
 	int ret, attrcount = 0;
-	struct iio_buffer *buffer = indio_dev->buffer;
 
 	ret = __iio_add_chan_devattr("index",
 				     chan,
@@ -452,7 +586,8 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
 				     0,
 				     IIO_SEPARATE,
 				     &indio_dev->dev,
-				     &buffer->scan_el_dev_attr_list);
+				     buffer,
+				     &buffer->buffer_attr_list);
 	if (ret)
 		return ret;
 	attrcount++;
@@ -463,7 +598,8 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
 				     0,
 				     0,
 				     &indio_dev->dev,
-				     &buffer->scan_el_dev_attr_list);
+				     buffer,
+				     &buffer->buffer_attr_list);
 	if (ret)
 		return ret;
 	attrcount++;
@@ -475,7 +611,8 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
 					     chan->scan_index,
 					     0,
 					     &indio_dev->dev,
-					     &buffer->scan_el_dev_attr_list);
+					     buffer,
+					     &buffer->buffer_attr_list);
 	else
 		ret = __iio_add_chan_devattr("en",
 					     chan,
@@ -484,7 +621,8 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
 					     chan->scan_index,
 					     0,
 					     &indio_dev->dev,
-					     &buffer->scan_el_dev_attr_list);
+					     buffer,
+					     &buffer->buffer_attr_list);
 	if (ret)
 		return ret;
 	attrcount++;
@@ -492,22 +630,19 @@ static int iio_buffer_add_channel_sysfs(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static ssize_t iio_buffer_read_length(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
+static ssize_t length_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct iio_buffer *buffer = indio_dev->buffer;
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
-	return sprintf(buf, "%d\n", buffer->length);
+	return sysfs_emit(buf, "%d\n", buffer->length);
 }
 
-static ssize_t iio_buffer_write_length(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf, size_t len)
+static ssize_t length_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct iio_buffer *buffer = indio_dev->buffer;
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	unsigned int val;
 	int ret;
 
@@ -519,7 +654,7 @@ static ssize_t iio_buffer_write_length(struct device *dev,
 		return len;
 
 	mutex_lock(&indio_dev->mlock);
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 	} else {
 		buffer->access->set_length(buffer, val);
@@ -535,12 +670,12 @@ out:
 	return ret ? ret : len;
 }
 
-static ssize_t iio_buffer_show_enable(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
+static ssize_t enable_show(struct device *dev, struct device_attribute *attr,
+			   char *buf)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	return sprintf(buf, "%d\n", iio_buffer_is_active(indio_dev->buffer));
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
+
+	return sysfs_emit(buf, "%d\n", iio_buffer_is_active(buffer));
 }
 
 static unsigned int iio_storage_bytes_for_si(struct iio_dev *indio_dev,
@@ -558,14 +693,16 @@ static unsigned int iio_storage_bytes_for_si(struct iio_dev *indio_dev,
 
 static unsigned int iio_storage_bytes_for_timestamp(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
 	return iio_storage_bytes_for_si(indio_dev,
-					indio_dev->scan_index_timestamp);
+					iio_dev_opaque->scan_index_timestamp);
 }
 
 static int iio_compute_scan_bytes(struct iio_dev *indio_dev,
 				const unsigned long *mask, bool timestamp)
 {
-	unsigned bytes = 0;
+	unsigned int bytes = 0;
 	int length, i, largest = 0;
 
 	/* How much space will the demuxed element take? */
@@ -591,8 +728,10 @@ static int iio_compute_scan_bytes(struct iio_dev *indio_dev,
 static void iio_buffer_activate(struct iio_dev *indio_dev,
 	struct iio_buffer *buffer)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
 	iio_buffer_get(buffer);
-	list_add(&buffer->buffer_list, &indio_dev->buffer_list);
+	list_add(&buffer->buffer_list, &iio_dev_opaque->buffer_list);
 }
 
 static void iio_buffer_deactivate(struct iio_buffer *buffer)
@@ -604,10 +743,11 @@ static void iio_buffer_deactivate(struct iio_buffer *buffer)
 
 static void iio_buffer_deactivate_all(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	struct iio_buffer *buffer, *_buffer;
 
 	list_for_each_entry_safe(buffer, _buffer,
-			&indio_dev->buffer_list, buffer_list)
+			&iio_dev_opaque->buffer_list, buffer_list)
 		iio_buffer_deactivate(buffer);
 }
 
@@ -680,6 +820,7 @@ static int iio_verify_update(struct iio_dev *indio_dev,
 	struct iio_buffer *insert_buffer, struct iio_buffer *remove_buffer,
 	struct iio_device_config *config)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	unsigned long *compound_mask;
 	const unsigned long *scan_mask;
 	bool strict_scanmask = false;
@@ -687,6 +828,13 @@ static int iio_verify_update(struct iio_dev *indio_dev,
 	bool scan_timestamp;
 	unsigned int modes;
 
+	if (insert_buffer &&
+	    bitmap_empty(insert_buffer->scan_mask, indio_dev->masklength)) {
+		dev_dbg(&indio_dev->dev,
+			"At least one scan element must be enabled first\n");
+		return -EINVAL;
+	}
+
 	memset(config, 0, sizeof(*config));
 	config->watermark = ~0;
 
@@ -695,12 +843,12 @@ static int iio_verify_update(struct iio_dev *indio_dev,
 	 * to verify.
 	 */
 	if (remove_buffer && !insert_buffer &&
-		list_is_singular(&indio_dev->buffer_list))
-			return 0;
+	    list_is_singular(&iio_dev_opaque->buffer_list))
+		return 0;
 
 	modes = indio_dev->modes;
 
-	list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list) {
+	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) {
 		if (buffer == remove_buffer)
 			continue;
 		modes &= buffer->access->modes;
@@ -721,7 +869,7 @@ static int iio_verify_update(struct iio_dev *indio_dev,
 		 * Keep things simple for now and only allow a single buffer to
 		 * be connected in hardware mode.
 		 */
-		if (insert_buffer && !list_empty(&indio_dev->buffer_list))
+		if (insert_buffer && !list_empty(&iio_dev_opaque->buffer_list))
 			return -EINVAL;
 		config->mode = INDIO_BUFFER_HARDWARE;
 		strict_scanmask = true;
@@ -741,7 +889,7 @@ static int iio_verify_update(struct iio_dev *indio_dev,
 
 	scan_timestamp = false;
 
-	list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list) {
+	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) {
 		if (buffer == remove_buffer)
 			continue;
 		bitmap_or(compound_mask, compound_mask, buffer->scan_mask,
@@ -764,7 +912,7 @@ static int iio_verify_update(struct iio_dev *indio_dev,
 		if (scan_mask == NULL)
 			return -EINVAL;
 	} else {
-	    scan_mask = compound_mask;
+		scan_mask = compound_mask;
 	}
 
 	config->scan_bytes = iio_compute_scan_bytes(indio_dev,
@@ -783,15 +931,16 @@ static int iio_verify_update(struct iio_dev *indio_dev,
  * @l:		list head used for management
  */
 struct iio_demux_table {
-	unsigned from;
-	unsigned to;
-	unsigned length;
+	unsigned int from;
+	unsigned int to;
+	unsigned int length;
 	struct list_head l;
 };
 
 static void iio_buffer_demux_free(struct iio_buffer *buffer)
 {
 	struct iio_demux_table *p, *q;
+
 	list_for_each_entry_safe(p, q, &buffer->demux_list, l) {
 		list_del(&p->l);
 		kfree(p);
@@ -823,7 +972,7 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev,
 				   struct iio_buffer *buffer)
 {
 	int ret, in_ind = -1, out_ind, length;
-	unsigned in_loc = 0, out_loc = 0;
+	unsigned int in_loc = 0, out_loc = 0;
 	struct iio_demux_table *p = NULL;
 
 	/* Clear out any old demux */
@@ -845,12 +994,12 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev,
 				       indio_dev->masklength,
 				       in_ind + 1);
 		while (in_ind != out_ind) {
-			in_ind = find_next_bit(indio_dev->active_scan_mask,
-					       indio_dev->masklength,
-					       in_ind + 1);
 			length = iio_storage_bytes_for_si(indio_dev, in_ind);
 			/* Make sure we are aligned */
 			in_loc = roundup(in_loc, length) + length;
+			in_ind = find_next_bit(indio_dev->active_scan_mask,
+					       indio_dev->masklength,
+					       in_ind + 1);
 		}
 		length = iio_storage_bytes_for_si(indio_dev, in_ind);
 		out_loc = roundup(out_loc, length);
@@ -870,7 +1019,6 @@ static int iio_buffer_update_demux(struct iio_dev *indio_dev,
 		if (ret)
 			goto error_clear_mux_table;
 		out_loc += length;
-		in_loc += length;
 	}
 	buffer->demux_bounce = kzalloc(out_loc, GFP_KERNEL);
 	if (buffer->demux_bounce == NULL) {
@@ -887,10 +1035,11 @@ error_clear_mux_table:
 
 static int iio_update_demux(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	struct iio_buffer *buffer;
 	int ret;
 
-	list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list) {
+	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) {
 		ret = iio_buffer_update_demux(indio_dev, buffer);
 		if (ret < 0)
 			goto error_clear_mux_table;
@@ -898,7 +1047,7 @@ static int iio_update_demux(struct iio_dev *indio_dev)
 	return 0;
 
 error_clear_mux_table:
-	list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list)
+	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list)
 		iio_buffer_demux_free(buffer);
 
 	return ret;
@@ -907,12 +1056,14 @@ error_clear_mux_table:
 static int iio_enable_buffers(struct iio_dev *indio_dev,
 	struct iio_device_config *config)
 {
-	struct iio_buffer *buffer;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_buffer *buffer, *tmp = NULL;
 	int ret;
 
 	indio_dev->active_scan_mask = config->scan_mask;
 	indio_dev->scan_timestamp = config->scan_timestamp;
 	indio_dev->scan_bytes = config->scan_bytes;
+	iio_dev_opaque->currentmode = config->mode;
 
 	iio_update_demux(indio_dev);
 
@@ -942,34 +1093,47 @@ static int iio_enable_buffers(struct iio_dev *indio_dev,
 		indio_dev->info->hwfifo_set_watermark(indio_dev,
 			config->watermark);
 
-	list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list) {
+	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) {
 		ret = iio_buffer_enable(buffer, indio_dev);
-		if (ret)
+		if (ret) {
+			tmp = buffer;
 			goto err_disable_buffers;
+		}
 	}
 
-	indio_dev->currentmode = config->mode;
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
+		ret = iio_trigger_attach_poll_func(indio_dev->trig,
+						   indio_dev->pollfunc);
+		if (ret)
+			goto err_disable_buffers;
+	}
 
 	if (indio_dev->setup_ops->postenable) {
 		ret = indio_dev->setup_ops->postenable(indio_dev);
 		if (ret) {
 			dev_dbg(&indio_dev->dev,
 			       "Buffer not started: postenable failed (%d)\n", ret);
-			goto err_disable_buffers;
+			goto err_detach_pollfunc;
 		}
 	}
 
 	return 0;
 
+err_detach_pollfunc:
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
+		iio_trigger_detach_poll_func(indio_dev->trig,
+					     indio_dev->pollfunc);
+	}
 err_disable_buffers:
-	list_for_each_entry_continue_reverse(buffer, &indio_dev->buffer_list,
+	buffer = list_prepare_entry(tmp, &iio_dev_opaque->buffer_list, buffer_list);
+	list_for_each_entry_continue_reverse(buffer, &iio_dev_opaque->buffer_list,
 					     buffer_list)
 		iio_buffer_disable(buffer, indio_dev);
 err_run_postdisable:
-	indio_dev->currentmode = INDIO_DIRECT_MODE;
 	if (indio_dev->setup_ops->postdisable)
 		indio_dev->setup_ops->postdisable(indio_dev);
 err_undo_config:
+	iio_dev_opaque->currentmode = INDIO_DIRECT_MODE;
 	indio_dev->active_scan_mask = NULL;
 
 	return ret;
@@ -977,12 +1141,13 @@ err_undo_config:
 
 static int iio_disable_buffers(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	struct iio_buffer *buffer;
 	int ret = 0;
 	int ret2;
 
 	/* Wind down existing buffers - iff there are any */
-	if (list_empty(&indio_dev->buffer_list))
+	if (list_empty(&iio_dev_opaque->buffer_list))
 		return 0;
 
 	/*
@@ -998,14 +1163,17 @@ static int iio_disable_buffers(struct iio_dev *indio_dev)
 			ret = ret2;
 	}
 
-	list_for_each_entry(buffer, &indio_dev->buffer_list, buffer_list) {
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
+		iio_trigger_detach_poll_func(indio_dev->trig,
+					     indio_dev->pollfunc);
+	}
+
+	list_for_each_entry(buffer, &iio_dev_opaque->buffer_list, buffer_list) {
 		ret2 = iio_buffer_disable(buffer, indio_dev);
 		if (ret2 && !ret)
 			ret = ret2;
 	}
 
-	indio_dev->currentmode = INDIO_DIRECT_MODE;
-
 	if (indio_dev->setup_ops->postdisable) {
 		ret2 = indio_dev->setup_ops->postdisable(indio_dev);
 		if (ret2 && !ret)
@@ -1014,6 +1182,7 @@ static int iio_disable_buffers(struct iio_dev *indio_dev)
 
 	iio_free_scan_mask(indio_dev, indio_dev->active_scan_mask);
 	indio_dev->active_scan_mask = NULL;
+	iio_dev_opaque->currentmode = INDIO_DIRECT_MODE;
 
 	return ret;
 }
@@ -1022,6 +1191,7 @@ static int __iio_update_buffers(struct iio_dev *indio_dev,
 		       struct iio_buffer *insert_buffer,
 		       struct iio_buffer *remove_buffer)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	struct iio_device_config new_config;
 	int ret;
 
@@ -1046,7 +1216,7 @@ static int __iio_update_buffers(struct iio_dev *indio_dev,
 		iio_buffer_activate(indio_dev, insert_buffer);
 
 	/* If no buffers in list, we are done */
-	if (list_empty(&indio_dev->buffer_list))
+	if (list_empty(&iio_dev_opaque->buffer_list))
 		return 0;
 
 	ret = iio_enable_buffers(indio_dev, &new_config);
@@ -1075,12 +1245,17 @@ int iio_update_buffers(struct iio_dev *indio_dev,
 		       struct iio_buffer *insert_buffer,
 		       struct iio_buffer *remove_buffer)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	int ret;
 
 	if (insert_buffer == remove_buffer)
 		return 0;
 
-	mutex_lock(&indio_dev->info_exist_lock);
+	if (insert_buffer &&
+	    (insert_buffer->direction == IIO_BUFFER_DIRECTION_OUT))
+		return -EINVAL;
+
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
 	mutex_lock(&indio_dev->mlock);
 
 	if (insert_buffer && iio_buffer_is_active(insert_buffer))
@@ -1103,7 +1278,7 @@ int iio_update_buffers(struct iio_dev *indio_dev,
 
 out_unlock:
 	mutex_unlock(&indio_dev->mlock);
-	mutex_unlock(&indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -1115,59 +1290,51 @@ void iio_disable_all_buffers(struct iio_dev *indio_dev)
 	iio_buffer_deactivate_all(indio_dev);
 }
 
-static ssize_t iio_buffer_store_enable(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf,
-				       size_t len)
+static ssize_t enable_store(struct device *dev, struct device_attribute *attr,
+			    const char *buf, size_t len)
 {
 	int ret;
 	bool requested_state;
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	bool inlist;
 
-	ret = strtobool(buf, &requested_state);
+	ret = kstrtobool(buf, &requested_state);
 	if (ret < 0)
 		return ret;
 
 	mutex_lock(&indio_dev->mlock);
 
 	/* Find out if it is in the list */
-	inlist = iio_buffer_is_active(indio_dev->buffer);
+	inlist = iio_buffer_is_active(buffer);
 	/* Already in desired state */
 	if (inlist == requested_state)
 		goto done;
 
 	if (requested_state)
-		ret = __iio_update_buffers(indio_dev,
-					 indio_dev->buffer, NULL);
+		ret = __iio_update_buffers(indio_dev, buffer, NULL);
 	else
-		ret = __iio_update_buffers(indio_dev,
-					 NULL, indio_dev->buffer);
+		ret = __iio_update_buffers(indio_dev, NULL, buffer);
 
 done:
 	mutex_unlock(&indio_dev->mlock);
 	return (ret < 0) ? ret : len;
 }
 
-static const char * const iio_scan_elements_group_name = "scan_elements";
-
-static ssize_t iio_buffer_show_watermark(struct device *dev,
-					 struct device_attribute *attr,
-					 char *buf)
+static ssize_t watermark_show(struct device *dev, struct device_attribute *attr,
+			      char *buf)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct iio_buffer *buffer = indio_dev->buffer;
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
-	return sprintf(buf, "%u\n", buffer->watermark);
+	return sysfs_emit(buf, "%u\n", buffer->watermark);
 }
 
-static ssize_t iio_buffer_store_watermark(struct device *dev,
-					  struct device_attribute *attr,
-					  const char *buf,
-					  size_t len)
+static ssize_t watermark_store(struct device *dev,
+			       struct device_attribute *attr,
+			       const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct iio_buffer *buffer = indio_dev->buffer;
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 	unsigned int val;
 	int ret;
 
@@ -1184,7 +1351,7 @@ static ssize_t iio_buffer_store_watermark(struct device *dev,
 		goto out;
 	}
 
-	if (iio_buffer_is_active(indio_dev->buffer)) {
+	if (iio_buffer_is_active(buffer)) {
 		ret = -EBUSY;
 		goto out;
 	}
@@ -1196,94 +1363,255 @@ out:
 	return ret ? ret : len;
 }
 
-static ssize_t iio_dma_show_data_available(struct device *dev,
-						struct device_attribute *attr,
-						char *buf)
+static ssize_t data_available_show(struct device *dev,
+				   struct device_attribute *attr, char *buf)
 {
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	size_t bytes;
-
-	bytes = iio_buffer_data_available(indio_dev->buffer);
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
 
-	return sprintf(buf, "%zu\n", bytes);
+	return sysfs_emit(buf, "%zu\n", iio_buffer_data_available(buffer));
 }
 
-static DEVICE_ATTR(length, S_IRUGO | S_IWUSR, iio_buffer_read_length,
-		   iio_buffer_write_length);
-static struct device_attribute dev_attr_length_ro = __ATTR(length,
-	S_IRUGO, iio_buffer_read_length, NULL);
-static DEVICE_ATTR(enable, S_IRUGO | S_IWUSR,
-		   iio_buffer_show_enable, iio_buffer_store_enable);
-static DEVICE_ATTR(watermark, S_IRUGO | S_IWUSR,
-		   iio_buffer_show_watermark, iio_buffer_store_watermark);
-static struct device_attribute dev_attr_watermark_ro = __ATTR(watermark,
-	S_IRUGO, iio_buffer_show_watermark, NULL);
-static DEVICE_ATTR(data_available, S_IRUGO,
-		iio_dma_show_data_available, NULL);
+static ssize_t direction_show(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	struct iio_buffer *buffer = to_iio_dev_attr(attr)->buffer;
+
+	switch (buffer->direction) {
+	case IIO_BUFFER_DIRECTION_IN:
+		return sysfs_emit(buf, "in\n");
+	case IIO_BUFFER_DIRECTION_OUT:
+		return sysfs_emit(buf, "out\n");
+	default:
+		return -EINVAL;
+	}
+}
 
+static DEVICE_ATTR_RW(length);
+static struct device_attribute dev_attr_length_ro = __ATTR_RO(length);
+static DEVICE_ATTR_RW(enable);
+static DEVICE_ATTR_RW(watermark);
+static struct device_attribute dev_attr_watermark_ro = __ATTR_RO(watermark);
+static DEVICE_ATTR_RO(data_available);
+static DEVICE_ATTR_RO(direction);
+
+/*
+ * When adding new attributes here, put the at the end, at least until
+ * the code that handles the length/length_ro & watermark/watermark_ro
+ * assignments gets cleaned up. Otherwise these can create some weird
+ * duplicate attributes errors under some setups.
+ */
 static struct attribute *iio_buffer_attrs[] = {
 	&dev_attr_length.attr,
 	&dev_attr_enable.attr,
 	&dev_attr_watermark.attr,
 	&dev_attr_data_available.attr,
+	&dev_attr_direction.attr,
 };
 
-int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
+#define to_dev_attr(_attr) container_of(_attr, struct device_attribute, attr)
+
+static struct attribute *iio_buffer_wrap_attr(struct iio_buffer *buffer,
+					      struct attribute *attr)
 {
-	struct iio_dev_attr *p;
-	struct attribute **attr;
-	struct iio_buffer *buffer = indio_dev->buffer;
-	int ret, i, attrn, attrcount, attrcount_orig = 0;
-	const struct iio_chan_spec *channels;
+	struct device_attribute *dattr = to_dev_attr(attr);
+	struct iio_dev_attr *iio_attr;
 
-	channels = indio_dev->channels;
-	if (channels) {
-		int ml = indio_dev->masklength;
+	iio_attr = kzalloc(sizeof(*iio_attr), GFP_KERNEL);
+	if (!iio_attr)
+		return NULL;
 
-		for (i = 0; i < indio_dev->num_channels; i++)
-			ml = max(ml, channels[i].scan_index + 1);
-		indio_dev->masklength = ml;
+	iio_attr->buffer = buffer;
+	memcpy(&iio_attr->dev_attr, dattr, sizeof(iio_attr->dev_attr));
+	iio_attr->dev_attr.attr.name = kstrdup_const(attr->name, GFP_KERNEL);
+	if (!iio_attr->dev_attr.attr.name) {
+		kfree(iio_attr);
+		return NULL;
 	}
 
-	if (!buffer)
-		return 0;
+	sysfs_attr_init(&iio_attr->dev_attr.attr);
 
-	attrcount = 0;
-	if (buffer->attrs) {
-		while (buffer->attrs[attrcount] != NULL)
-			attrcount++;
-	}
+	list_add(&iio_attr->l, &buffer->buffer_attr_list);
+
+	return &iio_attr->dev_attr.attr;
+}
+
+static int iio_buffer_register_legacy_sysfs_groups(struct iio_dev *indio_dev,
+						   struct attribute **buffer_attrs,
+						   int buffer_attrcount,
+						   int scan_el_attrcount)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct attribute_group *group;
+	struct attribute **attrs;
+	int ret;
 
-	attr = kcalloc(attrcount + ARRAY_SIZE(iio_buffer_attrs) + 1,
-		       sizeof(struct attribute *), GFP_KERNEL);
-	if (!attr)
+	attrs = kcalloc(buffer_attrcount + 1, sizeof(*attrs), GFP_KERNEL);
+	if (!attrs)
 		return -ENOMEM;
 
-	memcpy(attr, iio_buffer_attrs, sizeof(iio_buffer_attrs));
-	if (!buffer->access->set_length)
-		attr[0] = &dev_attr_length_ro.attr;
+	memcpy(attrs, buffer_attrs, buffer_attrcount * sizeof(*attrs));
 
-	if (buffer->access->flags & INDIO_BUFFER_FLAG_FIXED_WATERMARK)
-		attr[2] = &dev_attr_watermark_ro.attr;
+	group = &iio_dev_opaque->legacy_buffer_group;
+	group->attrs = attrs;
+	group->name = "buffer";
 
-	if (buffer->attrs)
-		memcpy(&attr[ARRAY_SIZE(iio_buffer_attrs)], buffer->attrs,
-		       sizeof(struct attribute *) * attrcount);
+	ret = iio_device_register_sysfs_group(indio_dev, group);
+	if (ret)
+		goto error_free_buffer_attrs;
 
-	attr[attrcount + ARRAY_SIZE(iio_buffer_attrs)] = NULL;
+	attrs = kcalloc(scan_el_attrcount + 1, sizeof(*attrs), GFP_KERNEL);
+	if (!attrs) {
+		ret = -ENOMEM;
+		goto error_free_buffer_attrs;
+	}
 
-	buffer->buffer_group.name = "buffer";
-	buffer->buffer_group.attrs = attr;
+	memcpy(attrs, &buffer_attrs[buffer_attrcount],
+	       scan_el_attrcount * sizeof(*attrs));
+
+	group = &iio_dev_opaque->legacy_scan_el_group;
+	group->attrs = attrs;
+	group->name = "scan_elements";
+
+	ret = iio_device_register_sysfs_group(indio_dev, group);
+	if (ret)
+		goto error_free_scan_el_attrs;
+
+	return 0;
+
+error_free_scan_el_attrs:
+	kfree(iio_dev_opaque->legacy_scan_el_group.attrs);
+error_free_buffer_attrs:
+	kfree(iio_dev_opaque->legacy_buffer_group.attrs);
+
+	return ret;
+}
+
+static void iio_buffer_unregister_legacy_sysfs_groups(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	kfree(iio_dev_opaque->legacy_buffer_group.attrs);
+	kfree(iio_dev_opaque->legacy_scan_el_group.attrs);
+}
+
+static int iio_buffer_chrdev_release(struct inode *inode, struct file *filep)
+{
+	struct iio_dev_buffer_pair *ib = filep->private_data;
+	struct iio_dev *indio_dev = ib->indio_dev;
+	struct iio_buffer *buffer = ib->buffer;
+
+	wake_up(&buffer->pollq);
+
+	kfree(ib);
+	clear_bit(IIO_BUSY_BIT_POS, &buffer->flags);
+	iio_device_put(indio_dev);
+
+	return 0;
+}
+
+static const struct file_operations iio_buffer_chrdev_fileops = {
+	.owner = THIS_MODULE,
+	.llseek = noop_llseek,
+	.read = iio_buffer_read,
+	.write = iio_buffer_write,
+	.poll = iio_buffer_poll,
+	.release = iio_buffer_chrdev_release,
+};
+
+static long iio_device_buffer_getfd(struct iio_dev *indio_dev, unsigned long arg)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	int __user *ival = (int __user *)arg;
+	struct iio_dev_buffer_pair *ib;
+	struct iio_buffer *buffer;
+	int fd, idx, ret;
+
+	if (copy_from_user(&idx, ival, sizeof(idx)))
+		return -EFAULT;
+
+	if (idx >= iio_dev_opaque->attached_buffers_cnt)
+		return -ENODEV;
+
+	iio_device_get(indio_dev);
+
+	buffer = iio_dev_opaque->attached_buffers[idx];
+
+	if (test_and_set_bit(IIO_BUSY_BIT_POS, &buffer->flags)) {
+		ret = -EBUSY;
+		goto error_iio_dev_put;
+	}
+
+	ib = kzalloc(sizeof(*ib), GFP_KERNEL);
+	if (!ib) {
+		ret = -ENOMEM;
+		goto error_clear_busy_bit;
+	}
+
+	ib->indio_dev = indio_dev;
+	ib->buffer = buffer;
 
-	indio_dev->groups[indio_dev->groupcounter++] = &buffer->buffer_group;
+	fd = anon_inode_getfd("iio:buffer", &iio_buffer_chrdev_fileops,
+			      ib, O_RDWR | O_CLOEXEC);
+	if (fd < 0) {
+		ret = fd;
+		goto error_free_ib;
+	}
 
-	if (buffer->scan_el_attrs != NULL) {
-		attr = buffer->scan_el_attrs->attrs;
-		while (*attr++ != NULL)
-			attrcount_orig++;
+	if (copy_to_user(ival, &fd, sizeof(fd))) {
+		/*
+		 * "Leak" the fd, as there's not much we can do about this
+		 * anyway. 'fd' might have been closed already, as
+		 * anon_inode_getfd() called fd_install() on it, which made
+		 * it reachable by userland.
+		 *
+		 * Instead of allowing a malicious user to play tricks with
+		 * us, rely on the process exit path to do any necessary
+		 * cleanup, as in releasing the file, if still needed.
+		 */
+		return -EFAULT;
 	}
-	attrcount = attrcount_orig;
-	INIT_LIST_HEAD(&buffer->scan_el_dev_attr_list);
+
+	return 0;
+
+error_free_ib:
+	kfree(ib);
+error_clear_busy_bit:
+	clear_bit(IIO_BUSY_BIT_POS, &buffer->flags);
+error_iio_dev_put:
+	iio_device_put(indio_dev);
+	return ret;
+}
+
+static long iio_device_buffer_ioctl(struct iio_dev *indio_dev, struct file *filp,
+				    unsigned int cmd, unsigned long arg)
+{
+	switch (cmd) {
+	case IIO_BUFFER_GET_FD_IOCTL:
+		return iio_device_buffer_getfd(indio_dev, arg);
+	default:
+		return IIO_IOCTL_UNHANDLED;
+	}
+}
+
+static int __iio_buffer_alloc_sysfs_and_mask(struct iio_buffer *buffer,
+					     struct iio_dev *indio_dev,
+					     int index)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_dev_attr *p;
+	struct attribute **attr;
+	int ret, i, attrn, scan_el_attrcount, buffer_attrcount;
+	const struct iio_chan_spec *channels;
+
+	buffer_attrcount = 0;
+	if (buffer->attrs) {
+		while (buffer->attrs[buffer_attrcount] != NULL)
+			buffer_attrcount++;
+	}
+
+	scan_el_attrcount = 0;
+	INIT_LIST_HEAD(&buffer->buffer_attr_list);
 	channels = indio_dev->channels;
 	if (channels) {
 		/* new magic */
@@ -1291,13 +1619,26 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
 			if (channels[i].scan_index < 0)
 				continue;
 
-			ret = iio_buffer_add_channel_sysfs(indio_dev,
+			/* Verify that sample bits fit into storage */
+			if (channels[i].scan_type.storagebits <
+			    channels[i].scan_type.realbits +
+			    channels[i].scan_type.shift) {
+				dev_err(&indio_dev->dev,
+					"Channel %d storagebits (%d) < shifted realbits (%d + %d)\n",
+					i, channels[i].scan_type.storagebits,
+					channels[i].scan_type.realbits,
+					channels[i].scan_type.shift);
+				ret = -EINVAL;
+				goto error_cleanup_dynamic;
+			}
+
+			ret = iio_buffer_add_channel_sysfs(indio_dev, buffer,
 							 &channels[i]);
 			if (ret < 0)
 				goto error_cleanup_dynamic;
-			attrcount += ret;
+			scan_el_attrcount += ret;
 			if (channels[i].type == IIO_TIMESTAMP)
-				indio_dev->scan_index_timestamp =
+				iio_dev_opaque->scan_index_timestamp =
 					channels[i].scan_index;
 		}
 		if (indio_dev->masklength && buffer->scan_mask == NULL) {
@@ -1310,44 +1651,152 @@ int iio_buffer_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
 		}
 	}
 
-	buffer->scan_el_group.name = iio_scan_elements_group_name;
-
-	buffer->scan_el_group.attrs = kcalloc(attrcount + 1,
-					      sizeof(buffer->scan_el_group.attrs[0]),
-					      GFP_KERNEL);
-	if (buffer->scan_el_group.attrs == NULL) {
+	attrn = buffer_attrcount + scan_el_attrcount + ARRAY_SIZE(iio_buffer_attrs);
+	attr = kcalloc(attrn + 1, sizeof(*attr), GFP_KERNEL);
+	if (!attr) {
 		ret = -ENOMEM;
 		goto error_free_scan_mask;
 	}
-	if (buffer->scan_el_attrs)
-		memcpy(buffer->scan_el_group.attrs, buffer->scan_el_attrs,
-		       sizeof(buffer->scan_el_group.attrs[0])*attrcount_orig);
-	attrn = attrcount_orig;
 
-	list_for_each_entry(p, &buffer->scan_el_dev_attr_list, l)
-		buffer->scan_el_group.attrs[attrn++] = &p->dev_attr.attr;
-	indio_dev->groups[indio_dev->groupcounter++] = &buffer->scan_el_group;
+	memcpy(attr, iio_buffer_attrs, sizeof(iio_buffer_attrs));
+	if (!buffer->access->set_length)
+		attr[0] = &dev_attr_length_ro.attr;
+
+	if (buffer->access->flags & INDIO_BUFFER_FLAG_FIXED_WATERMARK)
+		attr[2] = &dev_attr_watermark_ro.attr;
+
+	if (buffer->attrs)
+		memcpy(&attr[ARRAY_SIZE(iio_buffer_attrs)], buffer->attrs,
+		       sizeof(struct attribute *) * buffer_attrcount);
+
+	buffer_attrcount += ARRAY_SIZE(iio_buffer_attrs);
+	buffer->buffer_group.attrs = attr;
+
+	for (i = 0; i < buffer_attrcount; i++) {
+		struct attribute *wrapped;
+
+		wrapped = iio_buffer_wrap_attr(buffer, attr[i]);
+		if (!wrapped) {
+			ret = -ENOMEM;
+			goto error_free_buffer_attrs;
+		}
+		attr[i] = wrapped;
+	}
+
+	attrn = 0;
+	list_for_each_entry(p, &buffer->buffer_attr_list, l)
+		attr[attrn++] = &p->dev_attr.attr;
+
+	buffer->buffer_group.name = kasprintf(GFP_KERNEL, "buffer%d", index);
+	if (!buffer->buffer_group.name) {
+		ret = -ENOMEM;
+		goto error_free_buffer_attrs;
+	}
+
+	ret = iio_device_register_sysfs_group(indio_dev, &buffer->buffer_group);
+	if (ret)
+		goto error_free_buffer_attr_group_name;
+
+	/* we only need to register the legacy groups for the first buffer */
+	if (index > 0)
+		return 0;
+
+	ret = iio_buffer_register_legacy_sysfs_groups(indio_dev, attr,
+						      buffer_attrcount,
+						      scan_el_attrcount);
+	if (ret)
+		goto error_free_buffer_attr_group_name;
 
 	return 0;
 
+error_free_buffer_attr_group_name:
+	kfree(buffer->buffer_group.name);
+error_free_buffer_attrs:
+	kfree(buffer->buffer_group.attrs);
 error_free_scan_mask:
 	bitmap_free(buffer->scan_mask);
 error_cleanup_dynamic:
-	iio_free_chan_devattr_list(&buffer->scan_el_dev_attr_list);
-	kfree(indio_dev->buffer->buffer_group.attrs);
+	iio_free_chan_devattr_list(&buffer->buffer_attr_list);
 
 	return ret;
 }
 
-void iio_buffer_free_sysfs_and_mask(struct iio_dev *indio_dev)
+static void __iio_buffer_free_sysfs_and_mask(struct iio_buffer *buffer,
+					     struct iio_dev *indio_dev,
+					     int index)
 {
-	if (!indio_dev->buffer)
+	if (index == 0)
+		iio_buffer_unregister_legacy_sysfs_groups(indio_dev);
+	bitmap_free(buffer->scan_mask);
+	kfree(buffer->buffer_group.name);
+	kfree(buffer->buffer_group.attrs);
+	iio_free_chan_devattr_list(&buffer->buffer_attr_list);
+}
+
+int iio_buffers_alloc_sysfs_and_mask(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	const struct iio_chan_spec *channels;
+	struct iio_buffer *buffer;
+	int ret, i, idx;
+	size_t sz;
+
+	channels = indio_dev->channels;
+	if (channels) {
+		int ml = indio_dev->masklength;
+
+		for (i = 0; i < indio_dev->num_channels; i++)
+			ml = max(ml, channels[i].scan_index + 1);
+		indio_dev->masklength = ml;
+	}
+
+	if (!iio_dev_opaque->attached_buffers_cnt)
+		return 0;
+
+	for (idx = 0; idx < iio_dev_opaque->attached_buffers_cnt; idx++) {
+		buffer = iio_dev_opaque->attached_buffers[idx];
+		ret = __iio_buffer_alloc_sysfs_and_mask(buffer, indio_dev, idx);
+		if (ret)
+			goto error_unwind_sysfs_and_mask;
+	}
+
+	sz = sizeof(*(iio_dev_opaque->buffer_ioctl_handler));
+	iio_dev_opaque->buffer_ioctl_handler = kzalloc(sz, GFP_KERNEL);
+	if (!iio_dev_opaque->buffer_ioctl_handler) {
+		ret = -ENOMEM;
+		goto error_unwind_sysfs_and_mask;
+	}
+
+	iio_dev_opaque->buffer_ioctl_handler->ioctl = iio_device_buffer_ioctl;
+	iio_device_ioctl_handler_register(indio_dev,
+					  iio_dev_opaque->buffer_ioctl_handler);
+
+	return 0;
+
+error_unwind_sysfs_and_mask:
+	while (idx--) {
+		buffer = iio_dev_opaque->attached_buffers[idx];
+		__iio_buffer_free_sysfs_and_mask(buffer, indio_dev, idx);
+	}
+	return ret;
+}
+
+void iio_buffers_free_sysfs_and_mask(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_buffer *buffer;
+	int i;
+
+	if (!iio_dev_opaque->attached_buffers_cnt)
 		return;
 
-	bitmap_free(indio_dev->buffer->scan_mask);
-	kfree(indio_dev->buffer->buffer_group.attrs);
-	kfree(indio_dev->buffer->scan_el_group.attrs);
-	iio_free_chan_devattr_list(&indio_dev->buffer->scan_el_dev_attr_list);
+	iio_device_ioctl_handler_unregister(iio_dev_opaque->buffer_ioctl_handler);
+	kfree(iio_dev_opaque->buffer_ioctl_handler);
+
+	for (i = iio_dev_opaque->attached_buffers_cnt - 1; i >= 0; i--) {
+		buffer = iio_dev_opaque->attached_buffers[i];
+		__iio_buffer_free_sysfs_and_mask(buffer, indio_dev, i);
+	}
 }
 
 /**
@@ -1404,10 +1853,11 @@ static int iio_push_to_buffer(struct iio_buffer *buffer, const void *data)
  */
 int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	int ret;
 	struct iio_buffer *buf;
 
-	list_for_each_entry(buf, &indio_dev->buffer_list, buffer_list) {
+	list_for_each_entry(buf, &iio_dev_opaque->buffer_list, buffer_list) {
 		ret = iio_push_to_buffer(buf, data);
 		if (ret < 0)
 			return ret;
@@ -1418,6 +1868,52 @@ int iio_push_to_buffers(struct iio_dev *indio_dev, const void *data)
 EXPORT_SYMBOL_GPL(iio_push_to_buffers);
 
 /**
+ * iio_push_to_buffers_with_ts_unaligned() - push to registered buffer,
+ *    no alignment or space requirements.
+ * @indio_dev:		iio_dev structure for device.
+ * @data:		channel data excluding the timestamp.
+ * @data_sz:		size of data.
+ * @timestamp:		timestamp for the sample data.
+ *
+ * This special variant of iio_push_to_buffers_with_timestamp() does
+ * not require space for the timestamp, or 8 byte alignment of data.
+ * It does however require an allocation on first call and additional
+ * copies on all calls, so should be avoided if possible.
+ */
+int iio_push_to_buffers_with_ts_unaligned(struct iio_dev *indio_dev,
+					  const void *data,
+					  size_t data_sz,
+					  int64_t timestamp)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	/*
+	 * Conservative estimate - we can always safely copy the minimum
+	 * of either the data provided or the length of the destination buffer.
+	 * This relaxed limit allows the calling drivers to be lax about
+	 * tracking the size of the data they are pushing, at the cost of
+	 * unnecessary copying of padding.
+	 */
+	data_sz = min_t(size_t, indio_dev->scan_bytes, data_sz);
+	if (iio_dev_opaque->bounce_buffer_size !=  indio_dev->scan_bytes) {
+		void *bb;
+
+		bb = devm_krealloc(&indio_dev->dev,
+				   iio_dev_opaque->bounce_buffer,
+				   indio_dev->scan_bytes, GFP_KERNEL);
+		if (!bb)
+			return -ENOMEM;
+		iio_dev_opaque->bounce_buffer = bb;
+		iio_dev_opaque->bounce_buffer_size = indio_dev->scan_bytes;
+	}
+	memcpy(iio_dev_opaque->bounce_buffer, data, data_sz);
+	return iio_push_to_buffers_with_timestamp(indio_dev,
+						  iio_dev_opaque->bounce_buffer,
+						  timestamp);
+}
+EXPORT_SYMBOL_GPL(iio_push_to_buffers_with_ts_unaligned);
+
+/**
  * iio_buffer_release() - Free a buffer's resources
  * @ref: Pointer to the kref embedded in the iio_buffer struct
  *
@@ -1464,13 +1960,37 @@ EXPORT_SYMBOL_GPL(iio_buffer_put);
  * @indio_dev: The device the buffer should be attached to
  * @buffer: The buffer to attach to the device
  *
+ * Return 0 if successful, negative if error.
+ *
  * This function attaches a buffer to a IIO device. The buffer stays attached to
- * the device until the device is freed. The function should only be called at
- * most once per device.
+ * the device until the device is freed. For legacy reasons, the first attached
+ * buffer will also be assigned to 'indio_dev->buffer'.
+ * The array allocated here, will be free'd via the iio_device_detach_buffers()
+ * call which is handled by the iio_device_free().
  */
-void iio_device_attach_buffer(struct iio_dev *indio_dev,
-			      struct iio_buffer *buffer)
+int iio_device_attach_buffer(struct iio_dev *indio_dev,
+			     struct iio_buffer *buffer)
 {
-	indio_dev->buffer = iio_buffer_get(buffer);
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_buffer **new, **old = iio_dev_opaque->attached_buffers;
+	unsigned int cnt = iio_dev_opaque->attached_buffers_cnt;
+
+	cnt++;
+
+	new = krealloc(old, sizeof(*new) * cnt, GFP_KERNEL);
+	if (!new)
+		return -ENOMEM;
+	iio_dev_opaque->attached_buffers = new;
+
+	buffer = iio_buffer_get(buffer);
+
+	/* first buffer is legacy; attach it to the IIO device directly */
+	if (!indio_dev->buffer)
+		indio_dev->buffer = buffer;
+
+	iio_dev_opaque->attached_buffers[cnt - 1] = buffer;
+	iio_dev_opaque->attached_buffers_cnt = cnt;
+
+	return 0;
 }
 EXPORT_SYMBOL_GPL(iio_device_attach_buffer);
diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
index 65ff0d067018..151ff3993354 100644
--- a/drivers/iio/industrialio-core.c
+++ b/drivers/iio/industrialio-core.c
@@ -25,6 +25,7 @@
 #include <linux/debugfs.h>
 #include <linux/mutex.h>
 #include <linux/iio/iio.h>
+#include <linux/iio/iio-opaque.h>
 #include "iio_core.h"
 #include "iio_core_trigger.h"
 #include <linux/iio/sysfs.h>
@@ -130,6 +131,15 @@ static const char * const iio_modifier_names[] = {
 	[IIO_MOD_PM2P5] = "pm2p5",
 	[IIO_MOD_PM4] = "pm4",
 	[IIO_MOD_PM10] = "pm10",
+	[IIO_MOD_ETHANOL] = "ethanol",
+	[IIO_MOD_H2] = "h2",
+	[IIO_MOD_O2] = "o2",
+	[IIO_MOD_LINEAR_X] = "linear_x",
+	[IIO_MOD_LINEAR_Y] = "linear_y",
+	[IIO_MOD_LINEAR_Z] = "linear_z",
+	[IIO_MOD_PITCH] = "pitch",
+	[IIO_MOD_YAW] = "yaw",
+	[IIO_MOD_ROLL] = "roll",
 };
 
 /* relies on pairs of these shared then separate */
@@ -153,6 +163,7 @@ static const char * const iio_chan_info_postfix[] = {
 	[IIO_CHAN_INFO_PHASE] = "phase",
 	[IIO_CHAN_INFO_HARDWAREGAIN] = "hardwaregain",
 	[IIO_CHAN_INFO_HYSTERESIS] = "hysteresis",
+	[IIO_CHAN_INFO_HYSTERESIS_RELATIVE] = "hysteresis_relative",
 	[IIO_CHAN_INFO_INT_TIME] = "integration_time",
 	[IIO_CHAN_INFO_ENABLE] = "en",
 	[IIO_CHAN_INFO_CALIBHEIGHT] = "calibheight",
@@ -162,7 +173,81 @@ static const char * const iio_chan_info_postfix[] = {
 	[IIO_CHAN_INFO_CALIBEMISSIVITY] = "calibemissivity",
 	[IIO_CHAN_INFO_OVERSAMPLING_RATIO] = "oversampling_ratio",
 	[IIO_CHAN_INFO_THERMOCOUPLE_TYPE] = "thermocouple_type",
+	[IIO_CHAN_INFO_CALIBAMBIENT] = "calibambient",
+	[IIO_CHAN_INFO_ZEROPOINT] = "zeropoint",
 };
+/**
+ * iio_device_id() - query the unique ID for the device
+ * @indio_dev:		Device structure whose ID is being queried
+ *
+ * The IIO device ID is a unique index used for example for the naming
+ * of the character device /dev/iio\:device[ID]
+ */
+int iio_device_id(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->id;
+}
+EXPORT_SYMBOL_GPL(iio_device_id);
+
+/**
+ * iio_buffer_enabled() - helper function to test if the buffer is enabled
+ * @indio_dev:		IIO device structure for device
+ */
+bool iio_buffer_enabled(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->currentmode
+		& (INDIO_BUFFER_TRIGGERED | INDIO_BUFFER_HARDWARE |
+		   INDIO_BUFFER_SOFTWARE);
+}
+EXPORT_SYMBOL_GPL(iio_buffer_enabled);
+
+/**
+ * iio_sysfs_match_string_with_gaps - matches given string in an array with gaps
+ * @array: array of strings
+ * @n: number of strings in the array
+ * @str: string to match with
+ *
+ * Returns index of @str in the @array or -EINVAL, similar to match_string().
+ * Uses sysfs_streq instead of strcmp for matching.
+ *
+ * This routine will look for a string in an array of strings.
+ * The search will continue until the element is found or the n-th element
+ * is reached, regardless of any NULL elements in the array.
+ */
+static int iio_sysfs_match_string_with_gaps(const char * const *array, size_t n,
+					    const char *str)
+{
+	const char *item;
+	int index;
+
+	for (index = 0; index < n; index++) {
+		item = array[index];
+		if (!item)
+			continue;
+		if (sysfs_streq(item, str))
+			return index;
+	}
+
+	return -EINVAL;
+}
+
+#if defined(CONFIG_DEBUG_FS)
+/*
+ * There's also a CONFIG_DEBUG_FS guard in include/linux/iio/iio.h for
+ * iio_get_debugfs_dentry() to make it inline if CONFIG_DEBUG_FS is undefined
+ */
+struct dentry *iio_get_debugfs_dentry(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->debugfs_dentry;
+}
+EXPORT_SYMBOL_GPL(iio_get_debugfs_dentry);
+#endif
 
 /**
  * iio_find_channel_from_si() - get channel from its scan index
@@ -185,14 +270,20 @@ ssize_t iio_read_const_attr(struct device *dev,
 			    struct device_attribute *attr,
 			    char *buf)
 {
-	return sprintf(buf, "%s\n", to_iio_const_attr(attr)->string);
+	return sysfs_emit(buf, "%s\n", to_iio_const_attr(attr)->string);
 }
 EXPORT_SYMBOL(iio_read_const_attr);
 
-static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
+/**
+ * iio_device_set_clock() - Set current timestamping clock for the device
+ * @indio_dev: IIO device structure containing the device
+ * @clock_id: timestamping clock posix identifier to set.
+ */
+int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
 {
 	int ret;
-	const struct iio_event_interface *ev_int = indio_dev->event_interface;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	const struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
 
 	ret = mutex_lock_interruptible(&indio_dev->mlock);
 	if (ret)
@@ -202,11 +293,24 @@ static int iio_device_set_clock(struct iio_dev *indio_dev, clockid_t clock_id)
 		mutex_unlock(&indio_dev->mlock);
 		return -EBUSY;
 	}
-	indio_dev->clock_id = clock_id;
+	iio_dev_opaque->clock_id = clock_id;
 	mutex_unlock(&indio_dev->mlock);
 
 	return 0;
 }
+EXPORT_SYMBOL(iio_device_set_clock);
+
+/**
+ * iio_device_get_clock() - Retrieve current timestamping clock for the device
+ * @indio_dev: IIO device structure containing the device
+ */
+clockid_t iio_device_get_clock(const struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->clock_id;
+}
+EXPORT_SYMBOL(iio_device_get_clock);
 
 /**
  * iio_get_time_ns() - utility function to get a time stamp for events etc
@@ -238,29 +342,6 @@ s64 iio_get_time_ns(const struct iio_dev *indio_dev)
 }
 EXPORT_SYMBOL(iio_get_time_ns);
 
-/**
- * iio_get_time_res() - utility function to get time stamp clock resolution in
- *                      nano seconds.
- * @indio_dev: device
- */
-unsigned int iio_get_time_res(const struct iio_dev *indio_dev)
-{
-	switch (iio_device_get_clock(indio_dev)) {
-	case CLOCK_REALTIME:
-	case CLOCK_MONOTONIC:
-	case CLOCK_MONOTONIC_RAW:
-	case CLOCK_BOOTTIME:
-	case CLOCK_TAI:
-		return hrtimer_resolution;
-	case CLOCK_REALTIME_COARSE:
-	case CLOCK_MONOTONIC_COARSE:
-		return LOW_RES_NSEC;
-	default:
-		BUG();
-	}
-}
-EXPORT_SYMBOL(iio_get_time_res);
-
 static int __init iio_init(void)
 {
 	int ret;
@@ -301,29 +382,38 @@ static ssize_t iio_debugfs_read_reg(struct file *file, char __user *userbuf,
 			      size_t count, loff_t *ppos)
 {
 	struct iio_dev *indio_dev = file->private_data;
-	char buf[20];
-	unsigned val = 0;
-	ssize_t len;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	unsigned int val = 0;
 	int ret;
 
+	if (*ppos > 0)
+		return simple_read_from_buffer(userbuf, count, ppos,
+					       iio_dev_opaque->read_buf,
+					       iio_dev_opaque->read_buf_len);
+
 	ret = indio_dev->info->debugfs_reg_access(indio_dev,
-						  indio_dev->cached_reg_addr,
+						  iio_dev_opaque->cached_reg_addr,
 						  0, &val);
 	if (ret) {
 		dev_err(indio_dev->dev.parent, "%s: read failed\n", __func__);
 		return ret;
 	}
 
-	len = snprintf(buf, sizeof(buf), "0x%X\n", val);
+	iio_dev_opaque->read_buf_len = snprintf(iio_dev_opaque->read_buf,
+					      sizeof(iio_dev_opaque->read_buf),
+					      "0x%X\n", val);
 
-	return simple_read_from_buffer(userbuf, count, ppos, buf, len);
+	return simple_read_from_buffer(userbuf, count, ppos,
+				       iio_dev_opaque->read_buf,
+				       iio_dev_opaque->read_buf_len);
 }
 
 static ssize_t iio_debugfs_write_reg(struct file *file,
 		     const char __user *userbuf, size_t count, loff_t *ppos)
 {
 	struct iio_dev *indio_dev = file->private_data;
-	unsigned reg, val;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	unsigned int reg, val;
 	char buf[80];
 	int ret;
 
@@ -337,10 +427,10 @@ static ssize_t iio_debugfs_write_reg(struct file *file,
 
 	switch (ret) {
 	case 1:
-		indio_dev->cached_reg_addr = reg;
+		iio_dev_opaque->cached_reg_addr = reg;
 		break;
 	case 2:
-		indio_dev->cached_reg_addr = reg;
+		iio_dev_opaque->cached_reg_addr = reg;
 		ret = indio_dev->info->debugfs_reg_access(indio_dev, reg,
 							  val, NULL);
 		if (ret) {
@@ -364,23 +454,29 @@ static const struct file_operations iio_debugfs_reg_fops = {
 
 static void iio_device_unregister_debugfs(struct iio_dev *indio_dev)
 {
-	debugfs_remove_recursive(indio_dev->debugfs_dentry);
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	debugfs_remove_recursive(iio_dev_opaque->debugfs_dentry);
 }
 
 static void iio_device_register_debugfs(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque;
+
 	if (indio_dev->info->debugfs_reg_access == NULL)
 		return;
 
 	if (!iio_debugfs_dentry)
 		return;
 
-	indio_dev->debugfs_dentry =
+	iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	iio_dev_opaque->debugfs_dentry =
 		debugfs_create_dir(dev_name(&indio_dev->dev),
 				   iio_debugfs_dentry);
 
 	debugfs_create_file("direct_reg_access", 0644,
-			    indio_dev->debugfs_dentry, indio_dev,
+			    iio_dev_opaque->debugfs_dentry, indio_dev,
 			    &iio_debugfs_reg_fops);
 }
 #else
@@ -431,8 +527,11 @@ ssize_t iio_enum_available_read(struct iio_dev *indio_dev,
 	if (!e->num_items)
 		return 0;
 
-	for (i = 0; i < e->num_items; ++i)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%s ", e->items[i]);
+	for (i = 0; i < e->num_items; ++i) {
+		if (!e->items[i])
+			continue;
+		len += sysfs_emit_at(buf, len, "%s ", e->items[i]);
+	}
 
 	/* replace last space with a newline */
 	buf[len - 1] = '\n';
@@ -453,10 +552,10 @@ ssize_t iio_enum_read(struct iio_dev *indio_dev,
 	i = e->get(indio_dev, chan);
 	if (i < 0)
 		return i;
-	else if (i >= e->num_items)
+	else if (i >= e->num_items || !e->items[i])
 		return -EINVAL;
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", e->items[i]);
+	return sysfs_emit(buf, "%s\n", e->items[i]);
 }
 EXPORT_SYMBOL_GPL(iio_enum_read);
 
@@ -470,7 +569,7 @@ ssize_t iio_enum_write(struct iio_dev *indio_dev,
 	if (!e->set)
 		return -EINVAL;
 
-	ret = __sysfs_match_string(e->items, e->num_items, buf);
+	ret = iio_sysfs_match_string_with_gaps(e->items, e->num_items, buf);
 	if (ret < 0)
 		return ret;
 
@@ -507,10 +606,10 @@ ssize_t iio_show_mount_matrix(struct iio_dev *indio_dev, uintptr_t priv,
 	if (!mtx)
 		mtx = &iio_mount_idmatrix;
 
-	return snprintf(buf, PAGE_SIZE, "%s, %s, %s; %s, %s, %s; %s, %s, %s\n",
-			mtx->rotation[0], mtx->rotation[1], mtx->rotation[2],
-			mtx->rotation[3], mtx->rotation[4], mtx->rotation[5],
-			mtx->rotation[6], mtx->rotation[7], mtx->rotation[8]);
+	return sysfs_emit(buf, "%s, %s, %s; %s, %s, %s; %s, %s, %s\n",
+			  mtx->rotation[0], mtx->rotation[1], mtx->rotation[2],
+			  mtx->rotation[3], mtx->rotation[4], mtx->rotation[5],
+			  mtx->rotation[6], mtx->rotation[7], mtx->rotation[8]);
 }
 EXPORT_SYMBOL_GPL(iio_show_mount_matrix);
 
@@ -518,7 +617,6 @@ EXPORT_SYMBOL_GPL(iio_show_mount_matrix);
  * iio_read_mount_matrix() - retrieve iio device mounting matrix from
  *                           device "mount-matrix" property
  * @dev:	device the mounting matrix property is assigned to
- * @propname:	device specific mounting matrix property name
  * @matrix:	where to store retrieved matrix
  *
  * If device is assigned no mounting matrix property, a default 3x3 identity
@@ -526,14 +624,12 @@ EXPORT_SYMBOL_GPL(iio_show_mount_matrix);
  *
  * Return: 0 if success, or a negative error code on failure.
  */
-int iio_read_mount_matrix(struct device *dev, const char *propname,
-			  struct iio_mount_matrix *matrix)
+int iio_read_mount_matrix(struct device *dev, struct iio_mount_matrix *matrix)
 {
 	size_t len = ARRAY_SIZE(iio_mount_idmatrix.rotation);
 	int err;
 
-	err = device_property_read_string_array(dev, propname,
-						matrix->rotation, len);
+	err = device_property_read_string_array(dev, "mount-matrix", matrix->rotation, len);
 	if (err == len)
 		return 0;
 
@@ -550,55 +646,65 @@ int iio_read_mount_matrix(struct device *dev, const char *propname,
 }
 EXPORT_SYMBOL(iio_read_mount_matrix);
 
-static ssize_t __iio_format_value(char *buf, size_t len, unsigned int type,
+static ssize_t __iio_format_value(char *buf, size_t offset, unsigned int type,
 				  int size, const int *vals)
 {
-	unsigned long long tmp;
 	int tmp0, tmp1;
+	s64 tmp2;
 	bool scale_db = false;
 
 	switch (type) {
 	case IIO_VAL_INT:
-		return snprintf(buf, len, "%d", vals[0]);
+		return sysfs_emit_at(buf, offset, "%d", vals[0]);
 	case IIO_VAL_INT_PLUS_MICRO_DB:
 		scale_db = true;
-		/* fall through */
+		fallthrough;
 	case IIO_VAL_INT_PLUS_MICRO:
 		if (vals[1] < 0)
-			return snprintf(buf, len, "-%d.%06u%s", abs(vals[0]),
-					-vals[1], scale_db ? " dB" : "");
+			return sysfs_emit_at(buf, offset, "-%d.%06u%s",
+					     abs(vals[0]), -vals[1],
+					     scale_db ? " dB" : "");
 		else
-			return snprintf(buf, len, "%d.%06u%s", vals[0], vals[1],
-					scale_db ? " dB" : "");
+			return sysfs_emit_at(buf, offset, "%d.%06u%s", vals[0],
+					     vals[1], scale_db ? " dB" : "");
 	case IIO_VAL_INT_PLUS_NANO:
 		if (vals[1] < 0)
-			return snprintf(buf, len, "-%d.%09u", abs(vals[0]),
-					-vals[1]);
+			return sysfs_emit_at(buf, offset, "-%d.%09u",
+					     abs(vals[0]), -vals[1]);
 		else
-			return snprintf(buf, len, "%d.%09u", vals[0], vals[1]);
+			return sysfs_emit_at(buf, offset, "%d.%09u", vals[0],
+					     vals[1]);
 	case IIO_VAL_FRACTIONAL:
-		tmp = div_s64((s64)vals[0] * 1000000000LL, vals[1]);
+		tmp2 = div_s64((s64)vals[0] * 1000000000LL, vals[1]);
 		tmp1 = vals[1];
-		tmp0 = (int)div_s64_rem(tmp, 1000000000, &tmp1);
-		return snprintf(buf, len, "%d.%09u", tmp0, abs(tmp1));
+		tmp0 = (int)div_s64_rem(tmp2, 1000000000, &tmp1);
+		if ((tmp2 < 0) && (tmp0 == 0))
+			return sysfs_emit_at(buf, offset, "-0.%09u", abs(tmp1));
+		else
+			return sysfs_emit_at(buf, offset, "%d.%09u", tmp0,
+					     abs(tmp1));
 	case IIO_VAL_FRACTIONAL_LOG2:
-		tmp = shift_right((s64)vals[0] * 1000000000LL, vals[1]);
-		tmp0 = (int)div_s64_rem(tmp, 1000000000LL, &tmp1);
-		return snprintf(buf, len, "%d.%09u", tmp0, abs(tmp1));
+		tmp2 = shift_right((s64)vals[0] * 1000000000LL, vals[1]);
+		tmp0 = (int)div_s64_rem(tmp2, 1000000000LL, &tmp1);
+		if (tmp0 == 0 && tmp2 < 0)
+			return sysfs_emit_at(buf, offset, "-0.%09u", abs(tmp1));
+		else
+			return sysfs_emit_at(buf, offset, "%d.%09u", tmp0,
+					     abs(tmp1));
 	case IIO_VAL_INT_MULTIPLE:
 	{
 		int i;
 		int l = 0;
 
-		for (i = 0; i < size; ++i) {
-			l += snprintf(&buf[l], len - l, "%d ", vals[i]);
-			if (l >= len)
-				break;
-		}
+		for (i = 0; i < size; ++i)
+			l += sysfs_emit_at(buf, offset + l, "%d ", vals[i]);
 		return l;
 	}
 	case IIO_VAL_CHAR:
-		return snprintf(buf, len, "%c", (char)vals[0]);
+		return sysfs_emit_at(buf, offset, "%c", (char)vals[0]);
+	case IIO_VAL_INT_64:
+		tmp2 = (s64)((((u64)vals[1]) << 32) | (u32)vals[0]);
+		return sysfs_emit_at(buf, offset, "%lld", tmp2);
 	default:
 		return 0;
 	}
@@ -622,14 +728,30 @@ ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals)
 {
 	ssize_t len;
 
-	len = __iio_format_value(buf, PAGE_SIZE, type, size, vals);
+	len = __iio_format_value(buf, 0, type, size, vals);
 	if (len >= PAGE_SIZE - 1)
 		return -EFBIG;
 
-	return len + sprintf(buf + len, "\n");
+	return len + sysfs_emit_at(buf, len, "\n");
 }
 EXPORT_SYMBOL_GPL(iio_format_value);
 
+static ssize_t iio_read_channel_label(struct device *dev,
+				      struct device_attribute *attr,
+				      char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+
+	if (indio_dev->info->read_label)
+		return indio_dev->info->read_label(indio_dev, this_attr->c, buf);
+
+	if (this_attr->c->extend_name)
+		return sysfs_emit(buf, "%s\n", this_attr->c->extend_name);
+
+	return -EINVAL;
+}
+
 static ssize_t iio_read_channel_info(struct device *dev,
 				     struct device_attribute *attr,
 				     char *buf)
@@ -655,90 +777,67 @@ static ssize_t iio_read_channel_info(struct device *dev,
 	return iio_format_value(buf, ret, val_len, vals);
 }
 
-static ssize_t iio_format_avail_list(char *buf, const int *vals,
-				     int type, int length)
+static ssize_t iio_format_list(char *buf, const int *vals, int type, int length,
+			       const char *prefix, const char *suffix)
 {
+	ssize_t len;
+	int stride;
 	int i;
-	ssize_t len = 0;
 
 	switch (type) {
 	case IIO_VAL_INT:
-		for (i = 0; i < length; i++) {
-			len += __iio_format_value(buf + len, PAGE_SIZE - len,
-						  type, 1, &vals[i]);
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-			if (i < length - 1)
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						" ");
-			else
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						"\n");
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-		}
+		stride = 1;
 		break;
 	default:
-		for (i = 0; i < length / 2; i++) {
-			len += __iio_format_value(buf + len, PAGE_SIZE - len,
-						  type, 2, &vals[i * 2]);
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-			if (i < length / 2 - 1)
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						" ");
-			else
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						"\n");
+		stride = 2;
+		break;
+	}
+
+	len = sysfs_emit(buf, prefix);
+
+	for (i = 0; i <= length - stride; i += stride) {
+		if (i != 0) {
+			len += sysfs_emit_at(buf, len, " ");
 			if (len >= PAGE_SIZE)
 				return -EFBIG;
 		}
+
+		len += __iio_format_value(buf, len, type, stride, &vals[i]);
+		if (len >= PAGE_SIZE)
+			return -EFBIG;
 	}
 
+	len += sysfs_emit_at(buf, len, "%s\n", suffix);
+
 	return len;
 }
 
+static ssize_t iio_format_avail_list(char *buf, const int *vals,
+				     int type, int length)
+{
+
+	return iio_format_list(buf, vals, type, length, "", "");
+}
+
 static ssize_t iio_format_avail_range(char *buf, const int *vals, int type)
 {
-	int i;
-	ssize_t len;
+	int length;
 
-	len = snprintf(buf, PAGE_SIZE, "[");
+	/*
+	 * length refers to the array size , not the number of elements.
+	 * The purpose is to print the range [min , step ,max] so length should
+	 * be 3 in case of int, and 6 for other types.
+	 */
 	switch (type) {
 	case IIO_VAL_INT:
-		for (i = 0; i < 3; i++) {
-			len += __iio_format_value(buf + len, PAGE_SIZE - len,
-						  type, 1, &vals[i]);
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-			if (i < 2)
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						" ");
-			else
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						"]\n");
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-		}
+		length = 3;
 		break;
 	default:
-		for (i = 0; i < 3; i++) {
-			len += __iio_format_value(buf + len, PAGE_SIZE - len,
-						  type, 2, &vals[i * 2]);
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-			if (i < 2)
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						" ");
-			else
-				len += snprintf(buf + len, PAGE_SIZE - len,
-						"]\n");
-			if (len >= PAGE_SIZE)
-				return -EFBIG;
-		}
+		length = 6;
+		break;
 	}
 
-	return len;
+	return iio_format_list(buf, vals, type, length, "[", "]");
 }
 
 static ssize_t iio_read_channel_info_avail(struct device *dev,
@@ -769,17 +868,18 @@ static ssize_t iio_read_channel_info_avail(struct device *dev,
 }
 
 /**
- * iio_str_to_fixpoint() - Parse a fixed-point number from a string
+ * __iio_str_to_fixpoint() - Parse a fixed-point number from a string
  * @str: The string to parse
  * @fract_mult: Multiplier for the first decimal place, should be a power of 10
  * @integer: The integer part of the number
  * @fract: The fractional part of the number
+ * @scale_db: True if this should parse as dB
  *
  * Returns 0 on success, or a negative error code if the string could not be
  * parsed.
  */
-int iio_str_to_fixpoint(const char *str, int fract_mult,
-	int *integer, int *fract)
+static int __iio_str_to_fixpoint(const char *str, int fract_mult,
+				 int *integer, int *fract, bool scale_db)
 {
 	int i = 0, f = 0;
 	bool integer_part = true, negative = false;
@@ -808,8 +908,15 @@ int iio_str_to_fixpoint(const char *str, int fract_mult,
 		} else if (*str == '\n') {
 			if (*(str + 1) == '\0')
 				break;
-			else
-				return -EINVAL;
+			return -EINVAL;
+		} else if (!strncmp(str, " dB", sizeof(" dB") - 1) && scale_db) {
+			/* Ignore the dB suffix */
+			str += sizeof(" dB") - 1;
+			continue;
+		} else if (!strncmp(str, "dB", sizeof("dB") - 1) && scale_db) {
+			/* Ignore the dB suffix */
+			str += sizeof("dB") - 1;
+			continue;
 		} else if (*str == '.' && integer_part) {
 			integer_part = false;
 		} else {
@@ -830,6 +937,22 @@ int iio_str_to_fixpoint(const char *str, int fract_mult,
 
 	return 0;
 }
+
+/**
+ * iio_str_to_fixpoint() - Parse a fixed-point number from a string
+ * @str: The string to parse
+ * @fract_mult: Multiplier for the first decimal place, should be a power of 10
+ * @integer: The integer part of the number
+ * @fract: The fractional part of the number
+ *
+ * Returns 0 on success, or a negative error code if the string could not be
+ * parsed.
+ */
+int iio_str_to_fixpoint(const char *str, int fract_mult,
+			int *integer, int *fract)
+{
+	return __iio_str_to_fixpoint(str, fract_mult, integer, fract, false);
+}
 EXPORT_SYMBOL_GPL(iio_str_to_fixpoint);
 
 static ssize_t iio_write_channel_info(struct device *dev,
@@ -842,6 +965,7 @@ static ssize_t iio_write_channel_info(struct device *dev,
 	int ret, fract_mult = 100000;
 	int integer, fract = 0;
 	bool is_char = false;
+	bool scale_db = false;
 
 	/* Assumes decimal - precision based on number of digits */
 	if (!indio_dev->info->write_raw)
@@ -853,6 +977,9 @@ static ssize_t iio_write_channel_info(struct device *dev,
 		case IIO_VAL_INT:
 			fract_mult = 0;
 			break;
+		case IIO_VAL_INT_PLUS_MICRO_DB:
+			scale_db = true;
+			fallthrough;
 		case IIO_VAL_INT_PLUS_MICRO:
 			fract_mult = 100000;
 			break;
@@ -873,7 +1000,8 @@ static ssize_t iio_write_channel_info(struct device *dev,
 			return -EINVAL;
 		integer = ch;
 	} else {
-		ret = iio_str_to_fixpoint(buf, fract_mult, &integer, &fract);
+		ret = __iio_str_to_fixpoint(buf, fract_mult, &integer, &fract,
+					    scale_db);
 		if (ret)
 			return ret;
 	}
@@ -902,6 +1030,7 @@ int __iio_device_attr_init(struct device_attribute *dev_attr,
 	int ret = 0;
 	char *name = NULL;
 	char *full_postfix;
+
 	sysfs_attr_init(&dev_attr->attr);
 
 	/* Build up postfix of <extend_name>_<modifier>_postfix */
@@ -1001,12 +1130,12 @@ int __iio_device_attr_init(struct device_attribute *dev_attr,
 	dev_attr->attr.name = name;
 
 	if (readfunc) {
-		dev_attr->attr.mode |= S_IRUGO;
+		dev_attr->attr.mode |= 0444;
 		dev_attr->show = readfunc;
 	}
 
 	if (writefunc) {
-		dev_attr->attr.mode |= S_IWUSR;
+		dev_attr->attr.mode |= 0200;
 		dev_attr->store = writefunc;
 	}
 
@@ -1033,6 +1162,7 @@ int __iio_add_chan_devattr(const char *postfix,
 			   u64 mask,
 			   enum iio_shared_by shared_by,
 			   struct device *dev,
+			   struct iio_buffer *buffer,
 			   struct list_head *attr_list)
 {
 	int ret;
@@ -1048,6 +1178,7 @@ int __iio_add_chan_devattr(const char *postfix,
 		goto error_iio_dev_attr_free;
 	iio_attr->c = chan;
 	iio_attr->address = mask;
+	iio_attr->buffer = buffer;
 	list_for_each_entry(t, attr_list, l)
 		if (strcmp(t->dev_attr.attr.name,
 			   iio_attr->dev_attr.attr.name) == 0) {
@@ -1068,11 +1199,36 @@ error_iio_dev_attr_free:
 	return ret;
 }
 
+static int iio_device_add_channel_label(struct iio_dev *indio_dev,
+					 struct iio_chan_spec const *chan)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	int ret;
+
+	if (!indio_dev->info->read_label && !chan->extend_name)
+		return 0;
+
+	ret = __iio_add_chan_devattr("label",
+				     chan,
+				     &iio_read_channel_label,
+				     NULL,
+				     0,
+				     IIO_SEPARATE,
+				     &indio_dev->dev,
+				     NULL,
+				     &iio_dev_opaque->channel_attr_list);
+	if (ret < 0)
+		return ret;
+
+	return 1;
+}
+
 static int iio_device_add_info_mask_type(struct iio_dev *indio_dev,
 					 struct iio_chan_spec const *chan,
 					 enum iio_shared_by shared_by,
 					 const long *infomask)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	int i, ret, attrcount = 0;
 
 	for_each_set_bit(i, infomask, sizeof(*infomask)*8) {
@@ -1085,7 +1241,8 @@ static int iio_device_add_info_mask_type(struct iio_dev *indio_dev,
 					     i,
 					     shared_by,
 					     &indio_dev->dev,
-					     &indio_dev->channel_attr_list);
+					     NULL,
+					     &iio_dev_opaque->channel_attr_list);
 		if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE))
 			continue;
 		else if (ret < 0)
@@ -1101,6 +1258,7 @@ static int iio_device_add_info_mask_type_avail(struct iio_dev *indio_dev,
 					       enum iio_shared_by shared_by,
 					       const long *infomask)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	int i, ret, attrcount = 0;
 	char *avail_postfix;
 
@@ -1120,7 +1278,8 @@ static int iio_device_add_info_mask_type_avail(struct iio_dev *indio_dev,
 					     i,
 					     shared_by,
 					     &indio_dev->dev,
-					     &indio_dev->channel_attr_list);
+					     NULL,
+					     &iio_dev_opaque->channel_attr_list);
 		kfree(avail_postfix);
 		if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE))
 			continue;
@@ -1135,6 +1294,7 @@ static int iio_device_add_info_mask_type_avail(struct iio_dev *indio_dev,
 static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
 					struct iio_chan_spec const *chan)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	int ret, attrcount = 0;
 	const struct iio_chan_spec_ext_info *ext_info;
 
@@ -1149,8 +1309,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
 
 	ret = iio_device_add_info_mask_type_avail(indio_dev, chan,
 						  IIO_SEPARATE,
-						  &chan->
-						  info_mask_separate_available);
+						  &chan->info_mask_separate_available);
 	if (ret < 0)
 		return ret;
 	attrcount += ret;
@@ -1164,8 +1323,7 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
 
 	ret = iio_device_add_info_mask_type_avail(indio_dev, chan,
 						  IIO_SHARED_BY_TYPE,
-						  &chan->
-						  info_mask_shared_by_type_available);
+						  &chan->info_mask_shared_by_type_available);
 	if (ret < 0)
 		return ret;
 	attrcount += ret;
@@ -1198,8 +1356,14 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
 		return ret;
 	attrcount += ret;
 
+	ret = iio_device_add_channel_label(indio_dev, chan);
+	if (ret < 0)
+		return ret;
+	attrcount += ret;
+
 	if (chan->ext_info) {
 		unsigned int i = 0;
+
 		for (ext_info = chan->ext_info; ext_info->name; ext_info++) {
 			ret = __iio_add_chan_devattr(ext_info->name,
 					chan,
@@ -1210,7 +1374,8 @@ static int iio_device_add_channel_sysfs(struct iio_dev *indio_dev,
 					i,
 					ext_info->shared,
 					&indio_dev->dev,
-					&indio_dev->channel_attr_list);
+					NULL,
+					&iio_dev_opaque->channel_attr_list);
 			i++;
 			if (ret == -EBUSY && ext_info->shared)
 				continue;
@@ -1237,35 +1402,35 @@ void iio_free_chan_devattr_list(struct list_head *attr_list)
 	struct iio_dev_attr *p, *n;
 
 	list_for_each_entry_safe(p, n, attr_list, l) {
-		kfree(p->dev_attr.attr.name);
+		kfree_const(p->dev_attr.attr.name);
 		list_del(&p->l);
 		kfree(p);
 	}
 }
 
-static ssize_t iio_show_dev_name(struct device *dev,
-				 struct device_attribute *attr,
-				 char *buf)
+static ssize_t name_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	return snprintf(buf, PAGE_SIZE, "%s\n", indio_dev->name);
+
+	return sysfs_emit(buf, "%s\n", indio_dev->name);
 }
 
-static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
+static DEVICE_ATTR_RO(name);
 
-static ssize_t iio_show_dev_label(struct device *dev,
-				 struct device_attribute *attr,
-				 char *buf)
+static ssize_t label_show(struct device *dev, struct device_attribute *attr,
+			  char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	return snprintf(buf, PAGE_SIZE, "%s\n", indio_dev->label);
+
+	return sysfs_emit(buf, "%s\n", indio_dev->label);
 }
 
-static DEVICE_ATTR(label, S_IRUGO, iio_show_dev_label, NULL);
+static DEVICE_ATTR_RO(label);
 
-static ssize_t iio_show_timestamp_clock(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
+static ssize_t current_timestamp_clock_show(struct device *dev,
+					    struct device_attribute *attr,
+					    char *buf)
 {
 	const struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	const clockid_t clk = iio_device_get_clock(indio_dev);
@@ -1309,9 +1474,9 @@ static ssize_t iio_show_timestamp_clock(struct device *dev,
 	return sz;
 }
 
-static ssize_t iio_store_timestamp_clock(struct device *dev,
-					 struct device_attribute *attr,
-					 const char *buf, size_t len)
+static ssize_t current_timestamp_clock_store(struct device *dev,
+					     struct device_attribute *attr,
+					     const char *buf, size_t len)
 {
 	clockid_t clk;
 	int ret;
@@ -1340,11 +1505,30 @@ static ssize_t iio_store_timestamp_clock(struct device *dev,
 	return len;
 }
 
-static DEVICE_ATTR(current_timestamp_clock, S_IRUGO | S_IWUSR,
-		   iio_show_timestamp_clock, iio_store_timestamp_clock);
+int iio_device_register_sysfs_group(struct iio_dev *indio_dev,
+				    const struct attribute_group *group)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	const struct attribute_group **new, **old = iio_dev_opaque->groups;
+	unsigned int cnt = iio_dev_opaque->groupcounter;
+
+	new = krealloc(old, sizeof(*new) * (cnt + 2), GFP_KERNEL);
+	if (!new)
+		return -ENOMEM;
+
+	new[iio_dev_opaque->groupcounter++] = group;
+	new[iio_dev_opaque->groupcounter] = NULL;
+
+	iio_dev_opaque->groups = new;
+
+	return 0;
+}
+
+static DEVICE_ATTR_RW(current_timestamp_clock);
 
 static int iio_device_register_sysfs(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	int i, ret = 0, attrcount, attrn, attrcount_orig = 0;
 	struct iio_dev_attr *p;
 	struct attribute **attr, *clk = NULL;
@@ -1374,7 +1558,7 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
 			attrcount += ret;
 		}
 
-	if (indio_dev->event_interface)
+	if (iio_dev_opaque->event_interface)
 		clk = &dev_attr_current_timestamp_clock.attr;
 
 	if (indio_dev->name)
@@ -1384,109 +1568,137 @@ static int iio_device_register_sysfs(struct iio_dev *indio_dev)
 	if (clk)
 		attrcount++;
 
-	indio_dev->chan_attr_group.attrs = kcalloc(attrcount + 1,
-						   sizeof(indio_dev->chan_attr_group.attrs[0]),
-						   GFP_KERNEL);
-	if (indio_dev->chan_attr_group.attrs == NULL) {
+	iio_dev_opaque->chan_attr_group.attrs =
+		kcalloc(attrcount + 1,
+			sizeof(iio_dev_opaque->chan_attr_group.attrs[0]),
+			GFP_KERNEL);
+	if (iio_dev_opaque->chan_attr_group.attrs == NULL) {
 		ret = -ENOMEM;
 		goto error_clear_attrs;
 	}
-	/* Copy across original attributes */
-	if (indio_dev->info->attrs)
-		memcpy(indio_dev->chan_attr_group.attrs,
+	/* Copy across original attributes, and point to original binary attributes */
+	if (indio_dev->info->attrs) {
+		memcpy(iio_dev_opaque->chan_attr_group.attrs,
 		       indio_dev->info->attrs->attrs,
-		       sizeof(indio_dev->chan_attr_group.attrs[0])
+		       sizeof(iio_dev_opaque->chan_attr_group.attrs[0])
 		       *attrcount_orig);
+		iio_dev_opaque->chan_attr_group.is_visible =
+			indio_dev->info->attrs->is_visible;
+		iio_dev_opaque->chan_attr_group.bin_attrs =
+			indio_dev->info->attrs->bin_attrs;
+	}
 	attrn = attrcount_orig;
 	/* Add all elements from the list. */
-	list_for_each_entry(p, &indio_dev->channel_attr_list, l)
-		indio_dev->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
+	list_for_each_entry(p, &iio_dev_opaque->channel_attr_list, l)
+		iio_dev_opaque->chan_attr_group.attrs[attrn++] = &p->dev_attr.attr;
 	if (indio_dev->name)
-		indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
+		iio_dev_opaque->chan_attr_group.attrs[attrn++] = &dev_attr_name.attr;
 	if (indio_dev->label)
-		indio_dev->chan_attr_group.attrs[attrn++] = &dev_attr_label.attr;
+		iio_dev_opaque->chan_attr_group.attrs[attrn++] = &dev_attr_label.attr;
 	if (clk)
-		indio_dev->chan_attr_group.attrs[attrn++] = clk;
+		iio_dev_opaque->chan_attr_group.attrs[attrn++] = clk;
 
-	indio_dev->groups[indio_dev->groupcounter++] =
-		&indio_dev->chan_attr_group;
+	ret = iio_device_register_sysfs_group(indio_dev,
+					      &iio_dev_opaque->chan_attr_group);
+	if (ret)
+		goto error_clear_attrs;
 
 	return 0;
 
 error_clear_attrs:
-	iio_free_chan_devattr_list(&indio_dev->channel_attr_list);
+	iio_free_chan_devattr_list(&iio_dev_opaque->channel_attr_list);
 
 	return ret;
 }
 
 static void iio_device_unregister_sysfs(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 
-	iio_free_chan_devattr_list(&indio_dev->channel_attr_list);
-	kfree(indio_dev->chan_attr_group.attrs);
-	indio_dev->chan_attr_group.attrs = NULL;
+	iio_free_chan_devattr_list(&iio_dev_opaque->channel_attr_list);
+	kfree(iio_dev_opaque->chan_attr_group.attrs);
+	iio_dev_opaque->chan_attr_group.attrs = NULL;
+	kfree(iio_dev_opaque->groups);
+	iio_dev_opaque->groups = NULL;
 }
 
 static void iio_dev_release(struct device *device)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(device);
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
 	if (indio_dev->modes & INDIO_ALL_TRIGGERED_MODES)
 		iio_device_unregister_trigger_consumer(indio_dev);
 	iio_device_unregister_eventset(indio_dev);
 	iio_device_unregister_sysfs(indio_dev);
 
-	iio_buffer_put(indio_dev->buffer);
+	iio_device_detach_buffers(indio_dev);
+
+	lockdep_unregister_key(&iio_dev_opaque->mlock_key);
 
-	ida_simple_remove(&iio_ida, indio_dev->id);
-	kfree(indio_dev);
+	ida_free(&iio_ida, iio_dev_opaque->id);
+	kfree(iio_dev_opaque);
 }
 
-struct device_type iio_device_type = {
+const struct device_type iio_device_type = {
 	.name = "iio_device",
 	.release = iio_dev_release,
 };
 
 /**
  * iio_device_alloc() - allocate an iio_dev from a driver
+ * @parent:		Parent device.
  * @sizeof_priv:	Space to allocate for private structure.
  **/
-struct iio_dev *iio_device_alloc(int sizeof_priv)
+struct iio_dev *iio_device_alloc(struct device *parent, int sizeof_priv)
 {
-	struct iio_dev *dev;
+	struct iio_dev_opaque *iio_dev_opaque;
+	struct iio_dev *indio_dev;
 	size_t alloc_size;
 
-	alloc_size = sizeof(struct iio_dev);
+	alloc_size = sizeof(struct iio_dev_opaque);
 	if (sizeof_priv) {
-		alloc_size = ALIGN(alloc_size, IIO_ALIGN);
+		alloc_size = ALIGN(alloc_size, IIO_DMA_MINALIGN);
 		alloc_size += sizeof_priv;
 	}
-	/* ensure 32-byte alignment of whole construct ? */
-	alloc_size += IIO_ALIGN - 1;
-
-	dev = kzalloc(alloc_size, GFP_KERNEL);
-
-	if (dev) {
-		dev->dev.groups = dev->groups;
-		dev->dev.type = &iio_device_type;
-		dev->dev.bus = &iio_bus_type;
-		device_initialize(&dev->dev);
-		dev_set_drvdata(&dev->dev, (void *)dev);
-		mutex_init(&dev->mlock);
-		mutex_init(&dev->info_exist_lock);
-		INIT_LIST_HEAD(&dev->channel_attr_list);
-
-		dev->id = ida_simple_get(&iio_ida, 0, 0, GFP_KERNEL);
-		if (dev->id < 0) {
-			/* cannot use a dev_err as the name isn't available */
-			pr_err("failed to get device id\n");
-			kfree(dev);
-			return NULL;
-		}
-		dev_set_name(&dev->dev, "iio:device%d", dev->id);
-		INIT_LIST_HEAD(&dev->buffer_list);
+
+	iio_dev_opaque = kzalloc(alloc_size, GFP_KERNEL);
+	if (!iio_dev_opaque)
+		return NULL;
+
+	indio_dev = &iio_dev_opaque->indio_dev;
+	indio_dev->priv = (char *)iio_dev_opaque +
+		ALIGN(sizeof(struct iio_dev_opaque), IIO_DMA_MINALIGN);
+
+	indio_dev->dev.parent = parent;
+	indio_dev->dev.type = &iio_device_type;
+	indio_dev->dev.bus = &iio_bus_type;
+	device_initialize(&indio_dev->dev);
+	mutex_init(&indio_dev->mlock);
+	mutex_init(&iio_dev_opaque->info_exist_lock);
+	INIT_LIST_HEAD(&iio_dev_opaque->channel_attr_list);
+
+	iio_dev_opaque->id = ida_alloc(&iio_ida, GFP_KERNEL);
+	if (iio_dev_opaque->id < 0) {
+		/* cannot use a dev_err as the name isn't available */
+		pr_err("failed to get device id\n");
+		kfree(iio_dev_opaque);
+		return NULL;
 	}
 
-	return dev;
+	if (dev_set_name(&indio_dev->dev, "iio:device%d", iio_dev_opaque->id)) {
+		ida_free(&iio_ida, iio_dev_opaque->id);
+		kfree(iio_dev_opaque);
+		return NULL;
+	}
+
+	INIT_LIST_HEAD(&iio_dev_opaque->buffer_list);
+	INIT_LIST_HEAD(&iio_dev_opaque->ioctl_handlers);
+
+	lockdep_register_key(&iio_dev_opaque->mlock_key);
+	lockdep_set_class(&indio_dev->mlock, &iio_dev_opaque->mlock_key);
+
+	return indio_dev;
 }
 EXPORT_SYMBOL(iio_device_alloc);
 
@@ -1501,75 +1713,41 @@ void iio_device_free(struct iio_dev *dev)
 }
 EXPORT_SYMBOL(iio_device_free);
 
-static void devm_iio_device_release(struct device *dev, void *res)
-{
-	iio_device_free(*(struct iio_dev **)res);
-}
-
-int devm_iio_device_match(struct device *dev, void *res, void *data)
+static void devm_iio_device_release(void *iio_dev)
 {
-	struct iio_dev **r = res;
-	if (!r || !*r) {
-		WARN_ON(!r || !*r);
-		return 0;
-	}
-	return *r == data;
+	iio_device_free(iio_dev);
 }
-EXPORT_SYMBOL_GPL(devm_iio_device_match);
 
 /**
  * devm_iio_device_alloc - Resource-managed iio_device_alloc()
- * @dev:		Device to allocate iio_dev for
+ * @parent:		Device to allocate iio_dev for, and parent for this IIO device
  * @sizeof_priv:	Space to allocate for private structure.
  *
  * Managed iio_device_alloc. iio_dev allocated with this function is
  * automatically freed on driver detach.
  *
- * If an iio_dev allocated with this function needs to be freed separately,
- * devm_iio_device_free() must be used.
- *
  * RETURNS:
  * Pointer to allocated iio_dev on success, NULL on failure.
  */
-struct iio_dev *devm_iio_device_alloc(struct device *dev, int sizeof_priv)
+struct iio_dev *devm_iio_device_alloc(struct device *parent, int sizeof_priv)
 {
-	struct iio_dev **ptr, *iio_dev;
+	struct iio_dev *iio_dev;
+	int ret;
 
-	ptr = devres_alloc(devm_iio_device_release, sizeof(*ptr),
-			   GFP_KERNEL);
-	if (!ptr)
+	iio_dev = iio_device_alloc(parent, sizeof_priv);
+	if (!iio_dev)
 		return NULL;
 
-	iio_dev = iio_device_alloc(sizeof_priv);
-	if (iio_dev) {
-		*ptr = iio_dev;
-		devres_add(dev, ptr);
-	} else {
-		devres_free(ptr);
-	}
+	ret = devm_add_action_or_reset(parent, devm_iio_device_release,
+				       iio_dev);
+	if (ret)
+		return NULL;
 
 	return iio_dev;
 }
 EXPORT_SYMBOL_GPL(devm_iio_device_alloc);
 
 /**
- * devm_iio_device_free - Resource-managed iio_device_free()
- * @dev:		Device this iio_dev belongs to
- * @iio_dev:		the iio_dev associated with the device
- *
- * Free iio_dev allocated with devm_iio_device_alloc().
- */
-void devm_iio_device_free(struct device *dev, struct iio_dev *iio_dev)
-{
-	int rc;
-
-	rc = devres_release(dev, devm_iio_device_release,
-			    devm_iio_device_match, iio_dev);
-	WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_iio_device_free);
-
-/**
  * iio_chrdev_open() - chrdev file open for buffer access and ioctls
  * @inode:	Inode structure for identifying the device in the file system
  * @filp:	File structure for iio device used to keep and later access
@@ -1579,15 +1757,27 @@ EXPORT_SYMBOL_GPL(devm_iio_device_free);
  **/
 static int iio_chrdev_open(struct inode *inode, struct file *filp)
 {
-	struct iio_dev *indio_dev = container_of(inode->i_cdev,
-						struct iio_dev, chrdev);
+	struct iio_dev_opaque *iio_dev_opaque =
+		container_of(inode->i_cdev, struct iio_dev_opaque, chrdev);
+	struct iio_dev *indio_dev = &iio_dev_opaque->indio_dev;
+	struct iio_dev_buffer_pair *ib;
 
-	if (test_and_set_bit(IIO_BUSY_BIT_POS, &indio_dev->flags))
+	if (test_and_set_bit(IIO_BUSY_BIT_POS, &iio_dev_opaque->flags))
 		return -EBUSY;
 
 	iio_device_get(indio_dev);
 
-	filp->private_data = indio_dev;
+	ib = kmalloc(sizeof(*ib), GFP_KERNEL);
+	if (!ib) {
+		iio_device_put(indio_dev);
+		clear_bit(IIO_BUSY_BIT_POS, &iio_dev_opaque->flags);
+		return -ENOMEM;
+	}
+
+	ib->indio_dev = indio_dev;
+	ib->buffer = indio_dev->buffer;
+
+	filp->private_data = ib;
 
 	return 0;
 }
@@ -1601,45 +1791,83 @@ static int iio_chrdev_open(struct inode *inode, struct file *filp)
  */
 static int iio_chrdev_release(struct inode *inode, struct file *filp)
 {
-	struct iio_dev *indio_dev = container_of(inode->i_cdev,
-						struct iio_dev, chrdev);
-	clear_bit(IIO_BUSY_BIT_POS, &indio_dev->flags);
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_dev_opaque *iio_dev_opaque =
+		container_of(inode->i_cdev, struct iio_dev_opaque, chrdev);
+	struct iio_dev *indio_dev = &iio_dev_opaque->indio_dev;
+
+	kfree(ib);
+	clear_bit(IIO_BUSY_BIT_POS, &iio_dev_opaque->flags);
 	iio_device_put(indio_dev);
 
 	return 0;
 }
 
-/* Somewhat of a cross file organization violation - ioctls here are actually
- * event related */
-static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+void iio_device_ioctl_handler_register(struct iio_dev *indio_dev,
+				       struct iio_ioctl_handler *h)
 {
-	struct iio_dev *indio_dev = filp->private_data;
-	int __user *ip = (int __user *)arg;
-	int fd;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	list_add_tail(&h->entry, &iio_dev_opaque->ioctl_handlers);
+}
 
+void iio_device_ioctl_handler_unregister(struct iio_ioctl_handler *h)
+{
+	list_del(&h->entry);
+}
+
+static long iio_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+	struct iio_dev_buffer_pair *ib = filp->private_data;
+	struct iio_dev *indio_dev = ib->indio_dev;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_ioctl_handler *h;
+	int ret = -ENODEV;
+
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+
+	/**
+	 * The NULL check here is required to prevent crashing when a device
+	 * is being removed while userspace would still have open file handles
+	 * to try to access this device.
+	 */
 	if (!indio_dev->info)
-		return -ENODEV;
-
-	if (cmd == IIO_GET_EVENT_FD_IOCTL) {
-		fd = iio_event_getfd(indio_dev);
-		if (fd < 0)
-			return fd;
-		if (copy_to_user(ip, &fd, sizeof(fd)))
-			return -EFAULT;
-		return 0;
+		goto out_unlock;
+
+	list_for_each_entry(h, &iio_dev_opaque->ioctl_handlers, entry) {
+		ret = h->ioctl(indio_dev, filp, cmd, arg);
+		if (ret != IIO_IOCTL_UNHANDLED)
+			break;
 	}
-	return -EINVAL;
+
+	if (ret == IIO_IOCTL_UNHANDLED)
+		ret = -ENODEV;
+
+out_unlock:
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
+
+	return ret;
 }
 
 static const struct file_operations iio_buffer_fileops = {
+	.owner = THIS_MODULE,
+	.llseek = noop_llseek,
 	.read = iio_buffer_read_outer_addr,
-	.release = iio_chrdev_release,
-	.open = iio_chrdev_open,
+	.write = iio_buffer_write_outer_addr,
 	.poll = iio_buffer_poll_addr,
+	.unlocked_ioctl = iio_ioctl,
+	.compat_ioctl = compat_ptr_ioctl,
+	.open = iio_chrdev_open,
+	.release = iio_chrdev_release,
+};
+
+static const struct file_operations iio_event_fileops = {
 	.owner = THIS_MODULE,
 	.llseek = noop_llseek,
 	.unlocked_ioctl = iio_ioctl,
 	.compat_ioctl = compat_ptr_ioctl,
+	.open = iio_chrdev_open,
+	.release = iio_chrdev_release,
 };
 
 static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
@@ -1665,33 +1893,57 @@ static int iio_check_unique_scan_index(struct iio_dev *indio_dev)
 	return 0;
 }
 
+static int iio_check_extended_name(const struct iio_dev *indio_dev)
+{
+	unsigned int i;
+
+	if (!indio_dev->info->read_label)
+		return 0;
+
+	for (i = 0; i < indio_dev->num_channels; i++) {
+		if (indio_dev->channels[i].extend_name) {
+			dev_err(&indio_dev->dev,
+				"Cannot use labels and extend_name at the same time\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
 static const struct iio_buffer_setup_ops noop_ring_setup_ops;
 
 int __iio_device_register(struct iio_dev *indio_dev, struct module *this_mod)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct fwnode_handle *fwnode;
 	int ret;
 
-	indio_dev->driver_module = this_mod;
-	/* If the calling driver did not initialize of_node, do it here */
-	if (!indio_dev->dev.of_node && indio_dev->dev.parent)
-		indio_dev->dev.of_node = indio_dev->dev.parent->of_node;
+	if (!indio_dev->info)
+		return -EINVAL;
 
-	indio_dev->label = of_get_property(indio_dev->dev.of_node, "label",
-					   NULL);
+	iio_dev_opaque->driver_module = this_mod;
+
+	/* If the calling driver did not initialize firmware node, do it here */
+	if (dev_fwnode(&indio_dev->dev))
+		fwnode = dev_fwnode(&indio_dev->dev);
+	else
+		fwnode = dev_fwnode(indio_dev->dev.parent);
+	device_set_node(&indio_dev->dev, fwnode);
+
+	fwnode_property_read_string(fwnode, "label", &indio_dev->label);
 
 	ret = iio_check_unique_scan_index(indio_dev);
 	if (ret < 0)
 		return ret;
 
-	if (!indio_dev->info)
-		return -EINVAL;
-
-	/* configure elements for the chrdev */
-	indio_dev->dev.devt = MKDEV(MAJOR(iio_devt), indio_dev->id);
+	ret = iio_check_extended_name(indio_dev);
+	if (ret < 0)
+		return ret;
 
 	iio_device_register_debugfs(indio_dev);
 
-	ret = iio_buffer_alloc_sysfs_and_mask(indio_dev);
+	ret = iio_buffers_alloc_sysfs_and_mask(indio_dev);
 	if (ret) {
 		dev_err(indio_dev->dev.parent,
 			"Failed to create buffer sysfs interfaces\n");
@@ -1717,11 +1969,20 @@ int __iio_device_register(struct iio_dev *indio_dev, struct module *this_mod)
 		indio_dev->setup_ops == NULL)
 		indio_dev->setup_ops = &noop_ring_setup_ops;
 
-	cdev_init(&indio_dev->chrdev, &iio_buffer_fileops);
+	if (iio_dev_opaque->attached_buffers_cnt)
+		cdev_init(&iio_dev_opaque->chrdev, &iio_buffer_fileops);
+	else if (iio_dev_opaque->event_interface)
+		cdev_init(&iio_dev_opaque->chrdev, &iio_event_fileops);
+
+	if (iio_dev_opaque->attached_buffers_cnt || iio_dev_opaque->event_interface) {
+		indio_dev->dev.devt = MKDEV(MAJOR(iio_devt), iio_dev_opaque->id);
+		iio_dev_opaque->chrdev.owner = this_mod;
+	}
 
-	indio_dev->chrdev.owner = this_mod;
+	/* assign device groups now; they should be all registered now */
+	indio_dev->dev.groups = iio_dev_opaque->groups;
 
-	ret = cdev_device_add(&indio_dev->chrdev, &indio_dev->dev);
+	ret = cdev_device_add(&iio_dev_opaque->chrdev, &indio_dev->dev);
 	if (ret < 0)
 		goto error_unreg_eventset;
 
@@ -1732,7 +1993,7 @@ error_unreg_eventset:
 error_free_sysfs:
 	iio_device_unregister_sysfs(indio_dev);
 error_buffer_free_sysfs:
-	iio_buffer_free_sysfs_and_mask(indio_dev);
+	iio_buffers_free_sysfs_and_mask(indio_dev);
 error_unreg_debugfs:
 	iio_device_unregister_debugfs(indio_dev);
 	return ret;
@@ -1745,9 +2006,11 @@ EXPORT_SYMBOL(__iio_device_register);
  **/
 void iio_device_unregister(struct iio_dev *indio_dev)
 {
-	cdev_device_del(&indio_dev->chrdev, &indio_dev->dev);
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 
-	mutex_lock(&indio_dev->info_exist_lock);
+	cdev_device_del(&iio_dev_opaque->chrdev, &indio_dev->dev);
+
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
 
 	iio_device_unregister_debugfs(indio_dev);
 
@@ -1758,56 +2021,31 @@ void iio_device_unregister(struct iio_dev *indio_dev)
 	iio_device_wakeup_eventset(indio_dev);
 	iio_buffer_wakeup_poll(indio_dev);
 
-	mutex_unlock(&indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
-	iio_buffer_free_sysfs_and_mask(indio_dev);
+	iio_buffers_free_sysfs_and_mask(indio_dev);
 }
 EXPORT_SYMBOL(iio_device_unregister);
 
-static void devm_iio_device_unreg(struct device *dev, void *res)
+static void devm_iio_device_unreg(void *indio_dev)
 {
-	iio_device_unregister(*(struct iio_dev **)res);
+	iio_device_unregister(indio_dev);
 }
 
 int __devm_iio_device_register(struct device *dev, struct iio_dev *indio_dev,
 			       struct module *this_mod)
 {
-	struct iio_dev **ptr;
 	int ret;
 
-	ptr = devres_alloc(devm_iio_device_unreg, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return -ENOMEM;
-
-	*ptr = indio_dev;
 	ret = __iio_device_register(indio_dev, this_mod);
-	if (!ret)
-		devres_add(dev, ptr);
-	else
-		devres_free(ptr);
+	if (ret)
+		return ret;
 
-	return ret;
+	return devm_add_action_or_reset(dev, devm_iio_device_unreg, indio_dev);
 }
 EXPORT_SYMBOL_GPL(__devm_iio_device_register);
 
 /**
- * devm_iio_device_unregister - Resource-managed iio_device_unregister()
- * @dev:	Device this iio_dev belongs to
- * @indio_dev:	the iio_dev associated with the device
- *
- * Unregister iio_dev registered with devm_iio_device_register().
- */
-void devm_iio_device_unregister(struct device *dev, struct iio_dev *indio_dev)
-{
-	int rc;
-
-	rc = devres_release(dev, devm_iio_device_unreg,
-			    devm_iio_device_match, indio_dev);
-	WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_iio_device_unregister);
-
-/**
  * iio_device_claim_direct_mode - Keep device in direct mode
  * @indio_dev:	the iio_dev associated with the device
  *
@@ -1845,6 +2083,19 @@ void iio_device_release_direct_mode(struct iio_dev *indio_dev)
 }
 EXPORT_SYMBOL_GPL(iio_device_release_direct_mode);
 
+/**
+ * iio_device_get_current_mode() - helper function providing read-only access to
+ *				   the opaque @currentmode variable
+ * @indio_dev:			   IIO device structure for device
+ */
+int iio_device_get_current_mode(struct iio_dev *indio_dev)
+{
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	return iio_dev_opaque->currentmode;
+}
+EXPORT_SYMBOL_GPL(iio_device_get_current_mode);
+
 subsys_initcall(iio_init);
 module_exit(iio_exit);
 
diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
index 5b17c92d3b50..3d78da2531a9 100644
--- a/drivers/iio/industrialio-event.c
+++ b/drivers/iio/industrialio-event.c
@@ -18,6 +18,7 @@
 #include <linux/uaccess.h>
 #include <linux/wait.h>
 #include <linux/iio/iio.h>
+#include <linux/iio/iio-opaque.h>
 #include "iio_core.h"
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
@@ -30,6 +31,7 @@
  * @flags:		file operations related flags including busy flag.
  * @group:		event interface sysfs attribute group
  * @read_lock:		lock to protect kfifo read operations
+ * @ioctl_handler:	handler for event ioctl() calls
  */
 struct iio_event_interface {
 	wait_queue_head_t	wait;
@@ -39,6 +41,7 @@ struct iio_event_interface {
 	unsigned long		flags;
 	struct attribute_group	group;
 	struct mutex		read_lock;
+	struct iio_ioctl_handler	ioctl_handler;
 };
 
 bool iio_event_enabled(const struct iio_event_interface *ev_int)
@@ -62,7 +65,8 @@ bool iio_event_enabled(const struct iio_event_interface *ev_int)
  **/
 int iio_push_event(struct iio_dev *indio_dev, u64 ev_code, s64 timestamp)
 {
-	struct iio_event_interface *ev_int = indio_dev->event_interface;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
 	struct iio_event_data ev;
 	int copied;
 
@@ -96,7 +100,8 @@ static __poll_t iio_event_poll(struct file *filep,
 			     struct poll_table_struct *wait)
 {
 	struct iio_dev *indio_dev = filep->private_data;
-	struct iio_event_interface *ev_int = indio_dev->event_interface;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
 	__poll_t events = 0;
 
 	if (!indio_dev->info)
@@ -116,7 +121,8 @@ static ssize_t iio_event_chrdev_read(struct file *filep,
 				     loff_t *f_ps)
 {
 	struct iio_dev *indio_dev = filep->private_data;
-	struct iio_event_interface *ev_int = indio_dev->event_interface;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
 	unsigned int copied;
 	int ret;
 
@@ -165,7 +171,8 @@ static ssize_t iio_event_chrdev_read(struct file *filep,
 static int iio_event_chrdev_release(struct inode *inode, struct file *filep)
 {
 	struct iio_dev *indio_dev = filep->private_data;
-	struct iio_event_interface *ev_int = indio_dev->event_interface;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
 
 	clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);
 
@@ -182,9 +189,10 @@ static const struct file_operations iio_event_chrdev_fileops = {
 	.llseek = noop_llseek,
 };
 
-int iio_event_getfd(struct iio_dev *indio_dev)
+static int iio_event_getfd(struct iio_dev *indio_dev)
 {
-	struct iio_event_interface *ev_int = indio_dev->event_interface;
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
 	int fd;
 
 	if (ev_int == NULL)
@@ -222,12 +230,16 @@ static const char * const iio_ev_type_text[] = {
 	[IIO_EV_TYPE_THRESH_ADAPTIVE] = "thresh_adaptive",
 	[IIO_EV_TYPE_MAG_ADAPTIVE] = "mag_adaptive",
 	[IIO_EV_TYPE_CHANGE] = "change",
+	[IIO_EV_TYPE_MAG_REFERENCED] = "mag_referenced",
+	[IIO_EV_TYPE_GESTURE] = "gesture",
 };
 
 static const char * const iio_ev_dir_text[] = {
 	[IIO_EV_DIR_EITHER] = "either",
 	[IIO_EV_DIR_RISING] = "rising",
-	[IIO_EV_DIR_FALLING] = "falling"
+	[IIO_EV_DIR_FALLING] = "falling",
+	[IIO_EV_DIR_SINGLETAP] = "singletap",
+	[IIO_EV_DIR_DOUBLETAP] = "doubletap",
 };
 
 static const char * const iio_ev_info_text[] = {
@@ -237,6 +249,9 @@ static const char * const iio_ev_info_text[] = {
 	[IIO_EV_INFO_PERIOD] = "period",
 	[IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db",
 	[IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db",
+	[IIO_EV_INFO_TIMEOUT] = "timeout",
+	[IIO_EV_INFO_RESET_TIMEOUT] = "reset_timeout",
+	[IIO_EV_INFO_TAP2_MIN_DELAY] = "tap2_min_delay",
 };
 
 static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr)
@@ -264,7 +279,7 @@ static ssize_t iio_ev_state_store(struct device *dev,
 	int ret;
 	bool val;
 
-	ret = strtobool(buf, &val);
+	ret = kstrtobool(buf, &val);
 	if (ret < 0)
 		return ret;
 
@@ -289,7 +304,7 @@ static ssize_t iio_ev_state_show(struct device *dev,
 	if (val < 0)
 		return val;
 	else
-		return sprintf(buf, "%d\n", val);
+		return sysfs_emit(buf, "%d\n", val);
 }
 
 static ssize_t iio_ev_value_show(struct device *dev,
@@ -343,9 +358,11 @@ static int iio_device_add_event(struct iio_dev *indio_dev,
 	enum iio_event_type type, enum iio_event_direction dir,
 	enum iio_shared_by shared_by, const unsigned long *mask)
 {
-	ssize_t (*show)(struct device *, struct device_attribute *, char *);
-	ssize_t (*store)(struct device *, struct device_attribute *,
-		const char *, size_t);
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	ssize_t (*show)(struct device *dev, struct device_attribute *attr,
+		char *buf);
+	ssize_t (*store)(struct device *dev, struct device_attribute *attr,
+		const char *buf, size_t len);
 	unsigned int attrcount = 0;
 	unsigned int i;
 	char *postfix;
@@ -376,7 +393,8 @@ static int iio_device_add_event(struct iio_dev *indio_dev,
 
 		ret = __iio_add_chan_devattr(postfix, chan, show, store,
 			 (i << 16) | spec_index, shared_by, &indio_dev->dev,
-			&indio_dev->event_interface->dev_attr_list);
+			 NULL,
+			&iio_dev_opaque->event_interface->dev_attr_list);
 		kfree(postfix);
 
 		if ((ret == -EBUSY) && (shared_by != IIO_SEPARATE))
@@ -466,9 +484,29 @@ static void iio_setup_ev_int(struct iio_event_interface *ev_int)
 	mutex_init(&ev_int->read_lock);
 }
 
+static long iio_event_ioctl(struct iio_dev *indio_dev, struct file *filp,
+			    unsigned int cmd, unsigned long arg)
+{
+	int __user *ip = (int __user *)arg;
+	int fd;
+
+	if (cmd == IIO_GET_EVENT_FD_IOCTL) {
+		fd = iio_event_getfd(indio_dev);
+		if (fd < 0)
+			return fd;
+		if (copy_to_user(ip, &fd, sizeof(fd)))
+			return -EFAULT;
+		return 0;
+	}
+
+	return IIO_IOCTL_UNHANDLED;
+}
+
 static const char *iio_event_group_name = "events";
 int iio_device_register_eventset(struct iio_dev *indio_dev)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int;
 	struct iio_dev_attr *p;
 	int ret = 0, attrcount_orig = 0, attrcount, attrn;
 	struct attribute **attr;
@@ -477,14 +515,15 @@ int iio_device_register_eventset(struct iio_dev *indio_dev)
 	      iio_check_for_dynamic_events(indio_dev)))
 		return 0;
 
-	indio_dev->event_interface =
-		kzalloc(sizeof(struct iio_event_interface), GFP_KERNEL);
-	if (indio_dev->event_interface == NULL)
+	ev_int = kzalloc(sizeof(struct iio_event_interface), GFP_KERNEL);
+	if (ev_int == NULL)
 		return -ENOMEM;
 
-	INIT_LIST_HEAD(&indio_dev->event_interface->dev_attr_list);
+	iio_dev_opaque->event_interface = ev_int;
 
-	iio_setup_ev_int(indio_dev->event_interface);
+	INIT_LIST_HEAD(&ev_int->dev_attr_list);
+
+	iio_setup_ev_int(ev_int);
 	if (indio_dev->info->event_attrs != NULL) {
 		attr = indio_dev->info->event_attrs->attrs;
 		while (*attr++ != NULL)
@@ -498,35 +537,37 @@ int iio_device_register_eventset(struct iio_dev *indio_dev)
 		attrcount += ret;
 	}
 
-	indio_dev->event_interface->group.name = iio_event_group_name;
-	indio_dev->event_interface->group.attrs = kcalloc(attrcount + 1,
-							  sizeof(indio_dev->event_interface->group.attrs[0]),
-							  GFP_KERNEL);
-	if (indio_dev->event_interface->group.attrs == NULL) {
+	ev_int->group.name = iio_event_group_name;
+	ev_int->group.attrs = kcalloc(attrcount + 1,
+				      sizeof(ev_int->group.attrs[0]),
+				      GFP_KERNEL);
+	if (ev_int->group.attrs == NULL) {
 		ret = -ENOMEM;
 		goto error_free_setup_event_lines;
 	}
 	if (indio_dev->info->event_attrs)
-		memcpy(indio_dev->event_interface->group.attrs,
+		memcpy(ev_int->group.attrs,
 		       indio_dev->info->event_attrs->attrs,
-		       sizeof(indio_dev->event_interface->group.attrs[0])
-		       *attrcount_orig);
+		       sizeof(ev_int->group.attrs[0]) * attrcount_orig);
 	attrn = attrcount_orig;
 	/* Add all elements from the list. */
-	list_for_each_entry(p,
-			    &indio_dev->event_interface->dev_attr_list,
-			    l)
-		indio_dev->event_interface->group.attrs[attrn++] =
-			&p->dev_attr.attr;
-	indio_dev->groups[indio_dev->groupcounter++] =
-		&indio_dev->event_interface->group;
+	list_for_each_entry(p, &ev_int->dev_attr_list, l)
+		ev_int->group.attrs[attrn++] = &p->dev_attr.attr;
+
+	ret = iio_device_register_sysfs_group(indio_dev, &ev_int->group);
+	if (ret)
+		goto error_free_setup_event_lines;
+
+	ev_int->ioctl_handler.ioctl = iio_event_ioctl;
+	iio_device_ioctl_handler_register(&iio_dev_opaque->indio_dev,
+					  &ev_int->ioctl_handler);
 
 	return 0;
 
 error_free_setup_event_lines:
-	iio_free_chan_devattr_list(&indio_dev->event_interface->dev_attr_list);
-	kfree(indio_dev->event_interface);
-	indio_dev->event_interface = NULL;
+	iio_free_chan_devattr_list(&ev_int->dev_attr_list);
+	kfree(ev_int);
+	iio_dev_opaque->event_interface = NULL;
 	return ret;
 }
 
@@ -539,16 +580,24 @@ error_free_setup_event_lines:
  */
 void iio_device_wakeup_eventset(struct iio_dev *indio_dev)
 {
-	if (indio_dev->event_interface == NULL)
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+
+	if (iio_dev_opaque->event_interface == NULL)
 		return;
-	wake_up(&indio_dev->event_interface->wait);
+	wake_up(&iio_dev_opaque->event_interface->wait);
 }
 
 void iio_device_unregister_eventset(struct iio_dev *indio_dev)
 {
-	if (indio_dev->event_interface == NULL)
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
+	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;
+
+	if (ev_int == NULL)
 		return;
-	iio_free_chan_devattr_list(&indio_dev->event_interface->dev_attr_list);
-	kfree(indio_dev->event_interface->group.attrs);
-	kfree(indio_dev->event_interface);
+
+	iio_device_ioctl_handler_unregister(&ev_int->ioctl_handler);
+	iio_free_chan_devattr_list(&ev_int->dev_attr_list);
+	kfree(ev_int->group.attrs);
+	kfree(ev_int);
+	iio_dev_opaque->event_interface = NULL;
 }
diff --git a/drivers/iio/industrialio-sw-device.c b/drivers/iio/industrialio-sw-device.c
index 49f775f16ad5..cdaf30a3f233 100644
--- a/drivers/iio/industrialio-sw-device.c
+++ b/drivers/iio/industrialio-sw-device.c
@@ -27,7 +27,7 @@ static DEFINE_MUTEX(iio_device_types_lock);
 
 static
 struct iio_sw_device_type *__iio_find_sw_device_type(const char *name,
-						     unsigned len)
+						     unsigned int len)
 {
 	struct iio_sw_device_type *d = NULL, *iter;
 
diff --git a/drivers/iio/industrialio-sw-trigger.c b/drivers/iio/industrialio-sw-trigger.c
index 9ae793a70b8b..994f03a71520 100644
--- a/drivers/iio/industrialio-sw-trigger.c
+++ b/drivers/iio/industrialio-sw-trigger.c
@@ -27,7 +27,7 @@ static DEFINE_MUTEX(iio_trigger_types_lock);
 
 static
 struct iio_sw_trigger_type *__iio_find_sw_trigger_type(const char *name,
-						       unsigned len)
+						       unsigned int len)
 {
 	struct iio_sw_trigger_type *t = NULL, *iter;
 
diff --git a/drivers/iio/industrialio-trigger.c b/drivers/iio/industrialio-trigger.c
index 3908a9a90035..6885a186fe27 100644
--- a/drivers/iio/industrialio-trigger.c
+++ b/drivers/iio/industrialio-trigger.c
@@ -13,6 +13,7 @@
 #include <linux/slab.h>
 
 #include <linux/iio/iio.h>
+#include <linux/iio/iio-opaque.h>
 #include <linux/iio/trigger.h>
 #include "iio_core.h"
 #include "iio_core_trigger.h"
@@ -36,7 +37,7 @@ static LIST_HEAD(iio_trigger_list);
 static DEFINE_MUTEX(iio_trigger_list_lock);
 
 /**
- * iio_trigger_read_name() - retrieve useful identifying name
+ * name_show() - retrieve useful identifying name
  * @dev:	device associated with the iio_trigger
  * @attr:	pointer to the device_attribute structure that is
  *		being processed
@@ -45,15 +46,15 @@ static DEFINE_MUTEX(iio_trigger_list_lock);
  * Return: a negative number on failure or the number of written
  *	   characters on success.
  */
-static ssize_t iio_trigger_read_name(struct device *dev,
-				     struct device_attribute *attr,
-				     char *buf)
+static ssize_t name_show(struct device *dev, struct device_attribute *attr,
+			 char *buf)
 {
 	struct iio_trigger *trig = to_iio_trigger(dev);
-	return sprintf(buf, "%s\n", trig->name);
+
+	return sysfs_emit(buf, "%s\n", trig->name);
 }
 
-static DEVICE_ATTR(name, S_IRUGO, iio_trigger_read_name, NULL);
+static DEVICE_ATTR_RO(name);
 
 static struct attribute *iio_trig_dev_attrs[] = {
 	&dev_attr_name.attr,
@@ -63,20 +64,16 @@ ATTRIBUTE_GROUPS(iio_trig_dev);
 
 static struct iio_trigger *__iio_trigger_find_by_name(const char *name);
 
-int __iio_trigger_register(struct iio_trigger *trig_info,
-			   struct module *this_mod)
+int iio_trigger_register(struct iio_trigger *trig_info)
 {
 	int ret;
 
-	trig_info->owner = this_mod;
-
-	trig_info->id = ida_simple_get(&iio_trigger_ida, 0, 0, GFP_KERNEL);
+	trig_info->id = ida_alloc(&iio_trigger_ida, GFP_KERNEL);
 	if (trig_info->id < 0)
 		return trig_info->id;
 
 	/* Set the name used for the sysfs directory etc */
-	dev_set_name(&trig_info->dev, "trigger%ld",
-		     (unsigned long) trig_info->id);
+	dev_set_name(&trig_info->dev, "trigger%d", trig_info->id);
 
 	ret = device_add(&trig_info->dev);
 	if (ret)
@@ -98,10 +95,10 @@ error_device_del:
 	mutex_unlock(&iio_trigger_list_lock);
 	device_del(&trig_info->dev);
 error_unregister_id:
-	ida_simple_remove(&iio_trigger_ida, trig_info->id);
+	ida_free(&iio_trigger_ida, trig_info->id);
 	return ret;
 }
-EXPORT_SYMBOL(__iio_trigger_register);
+EXPORT_SYMBOL(iio_trigger_register);
 
 void iio_trigger_unregister(struct iio_trigger *trig_info)
 {
@@ -109,7 +106,7 @@ void iio_trigger_unregister(struct iio_trigger *trig_info)
 	list_del(&trig_info->list);
 	mutex_unlock(&iio_trigger_list_lock);
 
-	ida_simple_remove(&iio_trigger_ida, trig_info->id);
+	ida_free(&iio_trigger_ida, trig_info->id);
 	/* Possible issue in here */
 	device_del(&trig_info->dev);
 }
@@ -117,14 +114,17 @@ EXPORT_SYMBOL(iio_trigger_unregister);
 
 int iio_trigger_set_immutable(struct iio_dev *indio_dev, struct iio_trigger *trig)
 {
+	struct iio_dev_opaque *iio_dev_opaque;
+
 	if (!indio_dev || !trig)
 		return -EINVAL;
 
+	iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	mutex_lock(&indio_dev->mlock);
-	WARN_ON(indio_dev->trig_readonly);
+	WARN_ON(iio_dev_opaque->trig_readonly);
 
 	indio_dev->trig = iio_trigger_get(trig);
-	indio_dev->trig_readonly = true;
+	iio_dev_opaque->trig_readonly = true;
 	mutex_unlock(&indio_dev->mlock);
 
 	return 0;
@@ -159,6 +159,39 @@ static struct iio_trigger *iio_trigger_acquire_by_name(const char *name)
 	return trig;
 }
 
+static void iio_reenable_work_fn(struct work_struct *work)
+{
+	struct iio_trigger *trig = container_of(work, struct iio_trigger,
+						reenable_work);
+
+	/*
+	 * This 'might' occur after the trigger state is set to disabled -
+	 * in that case the driver should skip reenabling.
+	 */
+	trig->ops->reenable(trig);
+}
+
+/*
+ * In general, reenable callbacks may need to sleep and this path is
+ * not performance sensitive, so just queue up a work item
+ * to reneable the trigger for us.
+ *
+ * Races that can cause this.
+ * 1) A handler occurs entirely in interrupt context so the counter
+ *    the final decrement is still in this interrupt.
+ * 2) The trigger has been removed, but one last interrupt gets through.
+ *
+ * For (1) we must call reenable, but not in atomic context.
+ * For (2) it should be safe to call reenanble, if drivers never blindly
+ * reenable after state is off.
+ */
+static void iio_trigger_notify_done_atomic(struct iio_trigger *trig)
+{
+	if (atomic_dec_and_test(&trig->use_count) && trig->ops &&
+	    trig->ops->reenable)
+		schedule_work(&trig->reenable_work);
+}
+
 void iio_trigger_poll(struct iio_trigger *trig)
 {
 	int i;
@@ -170,7 +203,7 @@ void iio_trigger_poll(struct iio_trigger *trig)
 			if (trig->subirqs[i].enabled)
 				generic_handle_irq(trig->subirq_base + i);
 			else
-				iio_trigger_notify_done(trig);
+				iio_trigger_notify_done_atomic(trig);
 		}
 	}
 }
@@ -203,10 +236,8 @@ EXPORT_SYMBOL(iio_trigger_poll_chained);
 void iio_trigger_notify_done(struct iio_trigger *trig)
 {
 	if (atomic_dec_and_test(&trig->use_count) && trig->ops &&
-	    trig->ops->try_reenable)
-		if (trig->ops->try_reenable(trig))
-			/* Missed an interrupt so launch new poll now */
-			iio_trigger_poll(trig);
+	    trig->ops->reenable)
+		trig->ops->reenable(trig);
 }
 EXPORT_SYMBOL(iio_trigger_notify_done);
 
@@ -214,6 +245,7 @@ EXPORT_SYMBOL(iio_trigger_notify_done);
 static int iio_trigger_get_irq(struct iio_trigger *trig)
 {
 	int ret;
+
 	mutex_lock(&trig->pool_lock);
 	ret = bitmap_find_free_region(trig->pool,
 				      CONFIG_IIO_CONSUMERS_PER_TRIGGER,
@@ -239,15 +271,16 @@ static void iio_trigger_put_irq(struct iio_trigger *trig, int irq)
  * the relevant function is in there may be the best option.
  */
 /* Worth protecting against double additions? */
-static int iio_trigger_attach_poll_func(struct iio_trigger *trig,
-					struct iio_poll_func *pf)
+int iio_trigger_attach_poll_func(struct iio_trigger *trig,
+				 struct iio_poll_func *pf)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(pf->indio_dev);
+	bool notinuse =
+		bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);
 	int ret = 0;
-	bool notinuse
-		= bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);
 
 	/* Prevent the module from being removed whilst attached to a trigger */
-	__module_get(pf->indio_dev->driver_module);
+	__module_get(iio_dev_opaque->driver_module);
 
 	/* Get irq number */
 	pf->irq = iio_trigger_get_irq(trig);
@@ -286,18 +319,18 @@ out_free_irq:
 out_put_irq:
 	iio_trigger_put_irq(trig, pf->irq);
 out_put_module:
-	module_put(pf->indio_dev->driver_module);
+	module_put(iio_dev_opaque->driver_module);
 	return ret;
 }
 
-static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
-					 struct iio_poll_func *pf)
+int iio_trigger_detach_poll_func(struct iio_trigger *trig,
+				 struct iio_poll_func *pf)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(pf->indio_dev);
+	bool no_other_users =
+		bitmap_weight(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER) == 1;
 	int ret = 0;
-	bool no_other_users
-		= (bitmap_weight(trig->pool,
-				 CONFIG_IIO_CONSUMERS_PER_TRIGGER)
-		   == 1);
+
 	if (trig->ops && trig->ops->set_trigger_state && no_other_users) {
 		ret = trig->ops->set_trigger_state(trig, false);
 		if (ret)
@@ -307,7 +340,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
 		trig->attached_own_device = false;
 	iio_trigger_put_irq(trig, pf->irq);
 	free_irq(pf->irq, pf);
-	module_put(pf->indio_dev->driver_module);
+	module_put(iio_dev_opaque->driver_module);
 
 	return ret;
 }
@@ -315,6 +348,7 @@ static int iio_trigger_detach_poll_func(struct iio_trigger *trig,
 irqreturn_t iio_pollfunc_store_time(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
+
 	pf->timestamp = iio_get_time_ns(pf->indio_dev);
 	return IRQ_WAKE_THREAD;
 }
@@ -331,8 +365,8 @@ struct iio_poll_func
 	va_list vargs;
 	struct iio_poll_func *pf;
 
-	pf = kmalloc(sizeof *pf, GFP_KERNEL);
-	if (pf == NULL)
+	pf = kmalloc(sizeof(*pf), GFP_KERNEL);
+	if (!pf)
 		return NULL;
 	va_start(vargs, fmt);
 	pf->name = kvasprintf(GFP_KERNEL, fmt, vargs);
@@ -358,7 +392,7 @@ void iio_dealloc_pollfunc(struct iio_poll_func *pf)
 EXPORT_SYMBOL_GPL(iio_dealloc_pollfunc);
 
 /**
- * iio_trigger_read_current() - trigger consumer sysfs query current trigger
+ * current_trigger_show() - trigger consumer sysfs query current trigger
  * @dev:	device associated with an industrial I/O device
  * @attr:	pointer to the device_attribute structure that
  *		is being processed
@@ -370,19 +404,18 @@ EXPORT_SYMBOL_GPL(iio_dealloc_pollfunc);
  * Return: a negative number on failure, the number of characters written
  *	   on success or 0 if no trigger is available
  */
-static ssize_t iio_trigger_read_current(struct device *dev,
-					struct device_attribute *attr,
-					char *buf)
+static ssize_t current_trigger_show(struct device *dev,
+				    struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 
 	if (indio_dev->trig)
-		return sprintf(buf, "%s\n", indio_dev->trig->name);
+		return sysfs_emit(buf, "%s\n", indio_dev->trig->name);
 	return 0;
 }
 
 /**
- * iio_trigger_write_current() - trigger consumer sysfs set current trigger
+ * current_trigger_store() - trigger consumer sysfs set current trigger
  * @dev:	device associated with an industrial I/O device
  * @attr:	device attribute that is being processed
  * @buf:	string buffer that holds the name of the trigger
@@ -395,22 +428,22 @@ static ssize_t iio_trigger_read_current(struct device *dev,
  * Return: negative error code on failure or length of the buffer
  *	   on success
  */
-static ssize_t iio_trigger_write_current(struct device *dev,
-					 struct device_attribute *attr,
-					 const char *buf,
-					 size_t len)
+static ssize_t current_trigger_store(struct device *dev,
+				     struct device_attribute *attr,
+				     const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(indio_dev);
 	struct iio_trigger *oldtrig = indio_dev->trig;
 	struct iio_trigger *trig;
 	int ret;
 
 	mutex_lock(&indio_dev->mlock);
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_dev_opaque->currentmode == INDIO_BUFFER_TRIGGERED) {
 		mutex_unlock(&indio_dev->mlock);
 		return -EBUSY;
 	}
-	if (indio_dev->trig_readonly) {
+	if (iio_dev_opaque->trig_readonly) {
 		mutex_unlock(&indio_dev->mlock);
 		return -EPERM;
 	}
@@ -456,9 +489,7 @@ out_trigger_put:
 	return ret;
 }
 
-static DEVICE_ATTR(current_trigger, S_IRUGO | S_IWUSR,
-		   iio_trigger_read_current,
-		   iio_trigger_write_current);
+static DEVICE_ATTR_RW(current_trigger);
 
 static struct attribute *iio_trigger_consumer_attrs[] = {
 	&dev_attr_current_trigger.attr,
@@ -501,33 +532,37 @@ static const struct device_type iio_trig_type = {
 static void iio_trig_subirqmask(struct irq_data *d)
 {
 	struct irq_chip *chip = irq_data_get_irq_chip(d);
-	struct iio_trigger *trig
-		= container_of(chip,
-			       struct iio_trigger, subirq_chip);
+	struct iio_trigger *trig = container_of(chip, struct iio_trigger, subirq_chip);
+
 	trig->subirqs[d->irq - trig->subirq_base].enabled = false;
 }
 
 static void iio_trig_subirqunmask(struct irq_data *d)
 {
 	struct irq_chip *chip = irq_data_get_irq_chip(d);
-	struct iio_trigger *trig
-		= container_of(chip,
-			       struct iio_trigger, subirq_chip);
+	struct iio_trigger *trig = container_of(chip, struct iio_trigger, subirq_chip);
+
 	trig->subirqs[d->irq - trig->subirq_base].enabled = true;
 }
 
-static struct iio_trigger *viio_trigger_alloc(const char *fmt, va_list vargs)
+static __printf(3, 0)
+struct iio_trigger *viio_trigger_alloc(struct device *parent,
+				       struct module *this_mod,
+				       const char *fmt,
+				       va_list vargs)
 {
 	struct iio_trigger *trig;
 	int i;
 
-	trig = kzalloc(sizeof *trig, GFP_KERNEL);
+	trig = kzalloc(sizeof(*trig), GFP_KERNEL);
 	if (!trig)
 		return NULL;
 
+	trig->dev.parent = parent;
 	trig->dev.type = &iio_trig_type;
 	trig->dev.bus = &iio_bus_type;
 	device_initialize(&trig->dev);
+	INIT_WORK(&trig->reenable_work, iio_reenable_work_fn);
 
 	mutex_init(&trig->pool_lock);
 	trig->subirq_base = irq_alloc_descs(-1, 0,
@@ -540,6 +575,10 @@ static struct iio_trigger *viio_trigger_alloc(const char *fmt, va_list vargs)
 	if (trig->name == NULL)
 		goto free_descs;
 
+	INIT_LIST_HEAD(&trig->list);
+
+	trig->owner = this_mod;
+
 	trig->subirq_chip.name = trig->name;
 	trig->subirq_chip.irq_mask = &iio_trig_subirqmask;
 	trig->subirq_chip.irq_unmask = &iio_trig_subirqunmask;
@@ -549,7 +588,6 @@ static struct iio_trigger *viio_trigger_alloc(const char *fmt, va_list vargs)
 		irq_modify_status(trig->subirq_base + i,
 				  IRQ_NOREQUEST | IRQ_NOAUTOEN, IRQ_NOPROBE);
 	}
-	get_device(&trig->dev);
 
 	return trig;
 
@@ -560,18 +598,31 @@ free_trig:
 	return NULL;
 }
 
-struct iio_trigger *iio_trigger_alloc(const char *fmt, ...)
+/**
+ * __iio_trigger_alloc - Allocate a trigger
+ * @parent:		Device to allocate iio_trigger for
+ * @this_mod:		module allocating the trigger
+ * @fmt:		trigger name format. If it includes format
+ *			specifiers, the additional arguments following
+ *			format are formatted and inserted in the resulting
+ *			string replacing their respective specifiers.
+ * RETURNS:
+ * Pointer to allocated iio_trigger on success, NULL on failure.
+ */
+struct iio_trigger *__iio_trigger_alloc(struct device *parent,
+					struct module *this_mod,
+					const char *fmt, ...)
 {
 	struct iio_trigger *trig;
 	va_list vargs;
 
 	va_start(vargs, fmt);
-	trig = viio_trigger_alloc(fmt, vargs);
+	trig = viio_trigger_alloc(parent, this_mod, fmt, vargs);
 	va_end(vargs);
 
 	return trig;
 }
-EXPORT_SYMBOL(iio_trigger_alloc);
+EXPORT_SYMBOL(__iio_trigger_alloc);
 
 void iio_trigger_free(struct iio_trigger *trig)
 {
@@ -585,37 +636,24 @@ static void devm_iio_trigger_release(struct device *dev, void *res)
 	iio_trigger_free(*(struct iio_trigger **)res);
 }
 
-static int devm_iio_trigger_match(struct device *dev, void *res, void *data)
-{
-	struct iio_trigger **r = res;
-
-	if (!r || !*r) {
-		WARN_ON(!r || !*r);
-		return 0;
-	}
-
-	return *r == data;
-}
-
 /**
- * devm_iio_trigger_alloc - Resource-managed iio_trigger_alloc()
- * @dev:		Device to allocate iio_trigger for
+ * __devm_iio_trigger_alloc - Resource-managed iio_trigger_alloc()
+ * Managed iio_trigger_alloc.  iio_trigger allocated with this function is
+ * automatically freed on driver detach.
+ * @parent:		Device to allocate iio_trigger for
+ * @this_mod:		module allocating the trigger
  * @fmt:		trigger name format. If it includes format
  *			specifiers, the additional arguments following
  *			format are formatted and inserted in the resulting
  *			string replacing their respective specifiers.
  *
- * Managed iio_trigger_alloc.  iio_trigger allocated with this function is
- * automatically freed on driver detach.
- *
- * If an iio_trigger allocated with this function needs to be freed separately,
- * devm_iio_trigger_free() must be used.
  *
  * RETURNS:
  * Pointer to allocated iio_trigger on success, NULL on failure.
  */
-struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
-						const char *fmt, ...)
+struct iio_trigger *__devm_iio_trigger_alloc(struct device *parent,
+					     struct module *this_mod,
+					     const char *fmt, ...)
 {
 	struct iio_trigger **ptr, *trig;
 	va_list vargs;
@@ -627,97 +665,49 @@ struct iio_trigger *devm_iio_trigger_alloc(struct device *dev,
 
 	/* use raw alloc_dr for kmalloc caller tracing */
 	va_start(vargs, fmt);
-	trig = viio_trigger_alloc(fmt, vargs);
+	trig = viio_trigger_alloc(parent, this_mod, fmt, vargs);
 	va_end(vargs);
 	if (trig) {
 		*ptr = trig;
-		devres_add(dev, ptr);
+		devres_add(parent, ptr);
 	} else {
 		devres_free(ptr);
 	}
 
 	return trig;
 }
-EXPORT_SYMBOL_GPL(devm_iio_trigger_alloc);
+EXPORT_SYMBOL_GPL(__devm_iio_trigger_alloc);
 
-/**
- * devm_iio_trigger_free - Resource-managed iio_trigger_free()
- * @dev:		Device this iio_dev belongs to
- * @iio_trig:		the iio_trigger associated with the device
- *
- * Free iio_trigger allocated with devm_iio_trigger_alloc().
- */
-void devm_iio_trigger_free(struct device *dev, struct iio_trigger *iio_trig)
+static void devm_iio_trigger_unreg(void *trigger_info)
 {
-	int rc;
-
-	rc = devres_release(dev, devm_iio_trigger_release,
-			    devm_iio_trigger_match, iio_trig);
-	WARN_ON(rc);
-}
-EXPORT_SYMBOL_GPL(devm_iio_trigger_free);
-
-static void devm_iio_trigger_unreg(struct device *dev, void *res)
-{
-	iio_trigger_unregister(*(struct iio_trigger **)res);
+	iio_trigger_unregister(trigger_info);
 }
 
 /**
- * __devm_iio_trigger_register - Resource-managed iio_trigger_register()
+ * devm_iio_trigger_register - Resource-managed iio_trigger_register()
  * @dev:	device this trigger was allocated for
  * @trig_info:	trigger to register
- * @this_mod:   module registering the trigger
  *
  * Managed iio_trigger_register().  The IIO trigger registered with this
  * function is automatically unregistered on driver detach. This function
  * calls iio_trigger_register() internally. Refer to that function for more
  * information.
  *
- * If an iio_trigger registered with this function needs to be unregistered
- * separately, devm_iio_trigger_unregister() must be used.
- *
  * RETURNS:
  * 0 on success, negative error number on failure.
  */
-int __devm_iio_trigger_register(struct device *dev,
-				struct iio_trigger *trig_info,
-				struct module *this_mod)
+int devm_iio_trigger_register(struct device *dev,
+			      struct iio_trigger *trig_info)
 {
-	struct iio_trigger **ptr;
 	int ret;
 
-	ptr = devres_alloc(devm_iio_trigger_unreg, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return -ENOMEM;
-
-	*ptr = trig_info;
-	ret = __iio_trigger_register(trig_info, this_mod);
-	if (!ret)
-		devres_add(dev, ptr);
-	else
-		devres_free(ptr);
-
-	return ret;
-}
-EXPORT_SYMBOL_GPL(__devm_iio_trigger_register);
-
-/**
- * devm_iio_trigger_unregister - Resource-managed iio_trigger_unregister()
- * @dev:	device this iio_trigger belongs to
- * @trig_info:	the trigger associated with the device
- *
- * Unregister trigger registered with devm_iio_trigger_register().
- */
-void devm_iio_trigger_unregister(struct device *dev,
-				 struct iio_trigger *trig_info)
-{
-	int rc;
+	ret = iio_trigger_register(trig_info);
+	if (ret)
+		return ret;
 
-	rc = devres_release(dev, devm_iio_trigger_unreg, devm_iio_trigger_match,
-			    trig_info);
-	WARN_ON(rc);
+	return devm_add_action_or_reset(dev, devm_iio_trigger_unreg, trig_info);
 }
-EXPORT_SYMBOL_GPL(devm_iio_trigger_unregister);
+EXPORT_SYMBOL_GPL(devm_iio_trigger_register);
 
 bool iio_trigger_using_own(struct iio_dev *indio_dev)
 {
@@ -738,7 +728,7 @@ EXPORT_SYMBOL(iio_trigger_using_own);
  * device, -EINVAL otherwise.
  */
 int iio_trigger_validate_own_device(struct iio_trigger *trig,
-	struct iio_dev *indio_dev)
+				    struct iio_dev *indio_dev)
 {
 	if (indio_dev->dev.parent != trig->dev.parent)
 		return -EINVAL;
@@ -746,10 +736,10 @@ int iio_trigger_validate_own_device(struct iio_trigger *trig,
 }
 EXPORT_SYMBOL(iio_trigger_validate_own_device);
 
-void iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
+int iio_device_register_trigger_consumer(struct iio_dev *indio_dev)
 {
-	indio_dev->groups[indio_dev->groupcounter++] =
-		&iio_trigger_consumer_attr_group;
+	return iio_device_register_sysfs_group(indio_dev,
+					       &iio_trigger_consumer_attr_group);
 }
 
 void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
@@ -758,17 +748,3 @@ void iio_device_unregister_trigger_consumer(struct iio_dev *indio_dev)
 	if (indio_dev->trig)
 		iio_trigger_put(indio_dev->trig);
 }
-
-int iio_triggered_buffer_postenable(struct iio_dev *indio_dev)
-{
-	return iio_trigger_attach_poll_func(indio_dev->trig,
-					    indio_dev->pollfunc);
-}
-EXPORT_SYMBOL(iio_triggered_buffer_postenable);
-
-int iio_triggered_buffer_predisable(struct iio_dev *indio_dev)
-{
-	return iio_trigger_detach_poll_func(indio_dev->trig,
-					     indio_dev->pollfunc);
-}
-EXPORT_SYMBOL(iio_triggered_buffer_predisable);
diff --git a/drivers/iio/industrialio-triggered-event.c b/drivers/iio/industrialio-triggered-event.c
index 53da9ab17a62..4bedc65c9fe3 100644
--- a/drivers/iio/industrialio-triggered-event.c
+++ b/drivers/iio/industrialio-triggered-event.c
@@ -37,7 +37,7 @@ int iio_triggered_event_setup(struct iio_dev *indio_dev,
 						       indio_dev,
 						       "%s_consumer%d",
 						       indio_dev->name,
-						       indio_dev->id);
+						       iio_device_id(indio_dev));
 	if (indio_dev->pollfunc_event == NULL)
 		return -ENOMEM;
 
diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
index 5a8351c9a426..872fd5c24147 100644
--- a/drivers/iio/inkern.c
+++ b/drivers/iio/inkern.c
@@ -5,11 +5,12 @@
  */
 #include <linux/err.h>
 #include <linux/export.h>
+#include <linux/property.h>
 #include <linux/slab.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
 
 #include <linux/iio/iio.h>
+#include <linux/iio/iio-opaque.h>
 #include "iio_core.h"
 #include <linux/iio/machine.h>
 #include <linux/iio/driver.h>
@@ -24,18 +25,33 @@ struct iio_map_internal {
 static LIST_HEAD(iio_map_list);
 static DEFINE_MUTEX(iio_map_list_lock);
 
+static int iio_map_array_unregister_locked(struct iio_dev *indio_dev)
+{
+	int ret = -ENODEV;
+	struct iio_map_internal *mapi, *next;
+
+	list_for_each_entry_safe(mapi, next, &iio_map_list, l) {
+		if (indio_dev == mapi->indio_dev) {
+			list_del(&mapi->l);
+			kfree(mapi);
+			ret = 0;
+		}
+	}
+	return ret;
+}
+
 int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
 {
 	int i = 0, ret = 0;
 	struct iio_map_internal *mapi;
 
-	if (maps == NULL)
+	if (!maps)
 		return 0;
 
 	mutex_lock(&iio_map_list_lock);
-	while (maps[i].consumer_dev_name != NULL) {
+	while (maps[i].consumer_dev_name) {
 		mapi = kzalloc(sizeof(*mapi), GFP_KERNEL);
-		if (mapi == NULL) {
+		if (!mapi) {
 			ret = -ENOMEM;
 			goto error_ret;
 		}
@@ -45,34 +61,46 @@ int iio_map_array_register(struct iio_dev *indio_dev, struct iio_map *maps)
 		i++;
 	}
 error_ret:
+	if (ret)
+		iio_map_array_unregister_locked(indio_dev);
 	mutex_unlock(&iio_map_list_lock);
 
 	return ret;
 }
 EXPORT_SYMBOL_GPL(iio_map_array_register);
 
-
 /*
  * Remove all map entries associated with the given iio device
  */
 int iio_map_array_unregister(struct iio_dev *indio_dev)
 {
-	int ret = -ENODEV;
-	struct iio_map_internal *mapi, *next;
+	int ret;
 
 	mutex_lock(&iio_map_list_lock);
-	list_for_each_entry_safe(mapi, next, &iio_map_list, l) {
-		if (indio_dev == mapi->indio_dev) {
-			list_del(&mapi->l);
-			kfree(mapi);
-			ret = 0;
-		}
-	}
+	ret = iio_map_array_unregister_locked(indio_dev);
 	mutex_unlock(&iio_map_list_lock);
+
 	return ret;
 }
 EXPORT_SYMBOL_GPL(iio_map_array_unregister);
 
+static void iio_map_array_unregister_cb(void *indio_dev)
+{
+	iio_map_array_unregister(indio_dev);
+}
+
+int devm_iio_map_array_register(struct device *dev, struct iio_dev *indio_dev, struct iio_map *maps)
+{
+	int ret;
+
+	ret = iio_map_array_register(indio_dev, maps);
+	if (ret)
+		return ret;
+
+	return devm_add_action_or_reset(dev, iio_map_array_unregister_cb, indio_dev);
+}
+EXPORT_SYMBOL_GPL(devm_iio_map_array_register);
+
 static const struct iio_chan_spec
 *iio_chan_spec_from_name(const struct iio_dev *indio_dev, const char *name)
 {
@@ -88,15 +116,8 @@ static const struct iio_chan_spec
 	return chan;
 }
 
-#ifdef CONFIG_OF
-
-static int iio_dev_node_match(struct device *dev, const void *data)
-{
-	return dev->of_node == data && dev->type == &iio_device_type;
-}
-
 /**
- * __of_iio_simple_xlate - translate iiospec to the IIO channel index
+ * __fwnode_iio_simple_xlate - translate iiospec to the IIO channel index
  * @indio_dev:	pointer to the iio_dev structure
  * @iiospec:	IIO specifier as found in the device tree
  *
@@ -105,14 +126,14 @@ static int iio_dev_node_match(struct device *dev, const void *data)
  * whether IIO index is less than num_channels (that is specified in the
  * iio_dev).
  */
-static int __of_iio_simple_xlate(struct iio_dev *indio_dev,
-				const struct of_phandle_args *iiospec)
+static int __fwnode_iio_simple_xlate(struct iio_dev *indio_dev,
+				     const struct fwnode_reference_args *iiospec)
 {
-	if (!iiospec->args_count)
+	if (!iiospec->nargs)
 		return 0;
 
 	if (iiospec->args[0] >= indio_dev->num_channels) {
-		dev_err(&indio_dev->dev, "invalid channel index %u\n",
+		dev_err(&indio_dev->dev, "invalid channel index %llu\n",
 			iiospec->args[0]);
 		return -EINVAL;
 	}
@@ -120,32 +141,33 @@ static int __of_iio_simple_xlate(struct iio_dev *indio_dev,
 	return iiospec->args[0];
 }
 
-static int __of_iio_channel_get(struct iio_channel *channel,
-				struct device_node *np, int index)
+static int __fwnode_iio_channel_get(struct iio_channel *channel,
+				    struct fwnode_handle *fwnode, int index)
 {
+	struct fwnode_reference_args iiospec;
 	struct device *idev;
 	struct iio_dev *indio_dev;
 	int err;
-	struct of_phandle_args iiospec;
 
-	err = of_parse_phandle_with_args(np, "io-channels",
-					 "#io-channel-cells",
-					 index, &iiospec);
+	err = fwnode_property_get_reference_args(fwnode, "io-channels",
+						 "#io-channel-cells", 0,
+						 index, &iiospec);
 	if (err)
 		return err;
 
-	idev = bus_find_device(&iio_bus_type, NULL, iiospec.np,
-			       iio_dev_node_match);
-	of_node_put(iiospec.np);
-	if (idev == NULL)
+	idev = bus_find_device_by_fwnode(&iio_bus_type, iiospec.fwnode);
+	if (!idev) {
+		fwnode_handle_put(iiospec.fwnode);
 		return -EPROBE_DEFER;
+	}
 
 	indio_dev = dev_to_iio_dev(idev);
 	channel->indio_dev = indio_dev;
-	if (indio_dev->info->of_xlate)
-		index = indio_dev->info->of_xlate(indio_dev, &iiospec);
+	if (indio_dev->info->fwnode_xlate)
+		index = indio_dev->info->fwnode_xlate(indio_dev, &iiospec);
 	else
-		index = __of_iio_simple_xlate(indio_dev, &iiospec);
+		index = __fwnode_iio_simple_xlate(indio_dev, &iiospec);
+	fwnode_handle_put(iiospec.fwnode);
 	if (index < 0)
 		goto err_put;
 	channel->channel = &indio_dev->channels[index];
@@ -157,7 +179,8 @@ err_put:
 	return index;
 }
 
-static struct iio_channel *of_iio_channel_get(struct device_node *np, int index)
+static struct iio_channel *fwnode_iio_channel_get(struct fwnode_handle *fwnode,
+						  int index)
 {
 	struct iio_channel *channel;
 	int err;
@@ -166,10 +189,10 @@ static struct iio_channel *of_iio_channel_get(struct device_node *np, int index)
 		return ERR_PTR(-EINVAL);
 
 	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
-	if (channel == NULL)
+	if (!channel)
 		return ERR_PTR(-ENOMEM);
 
-	err = __of_iio_channel_get(channel, np, index);
+	err = __fwnode_iio_channel_get(channel, fwnode, index);
 	if (err)
 		goto err_free_channel;
 
@@ -180,73 +203,116 @@ err_free_channel:
 	return ERR_PTR(err);
 }
 
-static struct iio_channel *of_iio_channel_get_by_name(struct device_node *np,
-						      const char *name)
+static struct iio_channel *
+__fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode, const char *name)
 {
-	struct iio_channel *chan = NULL;
-
-	/* Walk up the tree of devices looking for a matching iio channel */
-	while (np) {
-		int index = 0;
-
+	struct iio_channel *chan;
+	int index = 0;
+
+	/*
+	 * For named iio channels, first look up the name in the
+	 * "io-channel-names" property.  If it cannot be found, the
+	 * index will be an error code, and fwnode_iio_channel_get()
+	 * will fail.
+	 */
+	if (name)
+		index = fwnode_property_match_string(fwnode, "io-channel-names",
+						     name);
+
+	chan = fwnode_iio_channel_get(fwnode, index);
+	if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER)
+		return chan;
+	if (name) {
+		if (index >= 0) {
+			pr_err("ERROR: could not get IIO channel %pfw:%s(%i)\n",
+			       fwnode, name, index);
+			/*
+			 * In this case, we found 'name' in 'io-channel-names'
+			 * but somehow we still fail so that we should not proceed
+			 * with any other lookup. Hence, explicitly return -EINVAL
+			 * (maybe not the better error code) so that the caller
+			 * won't do a system lookup.
+			 */
+			return ERR_PTR(-EINVAL);
+		}
 		/*
-		 * For named iio channels, first look up the name in the
-		 * "io-channel-names" property.  If it cannot be found, the
-		 * index will be an error code, and of_iio_channel_get()
-		 * will fail.
+		 * If index < 0, then fwnode_property_get_reference_args() fails
+		 * with -EINVAL or -ENOENT (ACPI case) which is expected. We
+		 * should not proceed if we get any other error.
 		 */
-		if (name)
-			index = of_property_match_string(np, "io-channel-names",
-							 name);
-		chan = of_iio_channel_get(np, index);
-		if (!IS_ERR(chan) || PTR_ERR(chan) == -EPROBE_DEFER)
-			break;
-		else if (name && index >= 0) {
-			pr_err("ERROR: could not get IIO channel %pOF:%s(%i)\n",
-				np, name ? name : "", index);
-			return NULL;
-		}
-
+		if (PTR_ERR(chan) != -EINVAL && PTR_ERR(chan) != -ENOENT)
+			return chan;
+	} else if (PTR_ERR(chan) != -ENOENT) {
 		/*
-		 * No matching IIO channel found on this node.
-		 * If the parent node has a "io-channel-ranges" property,
-		 * then we can try one of its channels.
+		 * if !name, then we should only proceed the lookup if
+		 * fwnode_property_get_reference_args() returns -ENOENT.
 		 */
-		np = np->parent;
-		if (np && !of_get_property(np, "io-channel-ranges", NULL))
-			return NULL;
+		return chan;
 	}
 
-	return chan;
+	/* so we continue the lookup */
+	return ERR_PTR(-ENODEV);
+}
+
+struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode,
+						   const char *name)
+{
+	struct fwnode_handle *parent;
+	struct iio_channel *chan;
+
+	/* Walk up the tree of devices looking for a matching iio channel */
+	chan = __fwnode_iio_channel_get_by_name(fwnode, name);
+	if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV)
+		return chan;
+
+	/*
+	 * No matching IIO channel found on this node.
+	 * If the parent node has a "io-channel-ranges" property,
+	 * then we can try one of its channels.
+	 */
+	fwnode_for_each_parent_node(fwnode, parent) {
+		if (!fwnode_property_present(parent, "io-channel-ranges")) {
+			fwnode_handle_put(parent);
+			return ERR_PTR(-ENODEV);
+		}
+
+		chan = __fwnode_iio_channel_get_by_name(fwnode, name);
+		if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) {
+			fwnode_handle_put(parent);
+ 			return chan;
+		}
+	}
+
+	return ERR_PTR(-ENODEV);
 }
+EXPORT_SYMBOL_GPL(fwnode_iio_channel_get_by_name);
 
-static struct iio_channel *of_iio_channel_get_all(struct device *dev)
+static struct iio_channel *fwnode_iio_channel_get_all(struct device *dev)
 {
+	struct fwnode_handle *fwnode = dev_fwnode(dev);
 	struct iio_channel *chans;
 	int i, mapind, nummaps = 0;
 	int ret;
 
 	do {
-		ret = of_parse_phandle_with_args(dev->of_node,
-						 "io-channels",
-						 "#io-channel-cells",
-						 nummaps, NULL);
+		ret = fwnode_property_get_reference_args(fwnode, "io-channels",
+							 "#io-channel-cells", 0,
+							 nummaps, NULL);
 		if (ret < 0)
 			break;
 	} while (++nummaps);
 
-	if (nummaps == 0)	/* no error, return NULL to search map table */
-		return NULL;
+	if (nummaps == 0)
+		return ERR_PTR(-ENODEV);
 
 	/* NULL terminated array to save passing size */
 	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (chans == NULL)
+	if (!chans)
 		return ERR_PTR(-ENOMEM);
 
-	/* Search for OF matches */
+	/* Search for FW matches */
 	for (mapind = 0; mapind < nummaps; mapind++) {
-		ret = __of_iio_channel_get(&chans[mapind], dev->of_node,
-					   mapind);
+		ret = __fwnode_iio_channel_get(&chans[mapind], fwnode, mapind);
 		if (ret)
 			goto error_free_chans;
 	}
@@ -259,21 +325,6 @@ error_free_chans:
 	return ERR_PTR(ret);
 }
 
-#else /* CONFIG_OF */
-
-static inline struct iio_channel *
-of_iio_channel_get_by_name(struct device_node *np, const char *name)
-{
-	return NULL;
-}
-
-static inline struct iio_channel *of_iio_channel_get_all(struct device *dev)
-{
-	return NULL;
-}
-
-#endif /* CONFIG_OF */
-
 static struct iio_channel *iio_channel_get_sys(const char *name,
 					       const char *channel_name)
 {
@@ -281,7 +332,7 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
 	struct iio_channel *channel;
 	int err;
 
-	if (name == NULL && channel_name == NULL)
+	if (!(name || channel_name))
 		return ERR_PTR(-ENODEV);
 
 	/* first find matching entry the channel map */
@@ -296,11 +347,11 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
 		break;
 	}
 	mutex_unlock(&iio_map_list_lock);
-	if (c == NULL)
+	if (!c)
 		return ERR_PTR(-ENODEV);
 
 	channel = kzalloc(sizeof(*channel), GFP_KERNEL);
-	if (channel == NULL) {
+	if (!channel) {
 		err = -ENOMEM;
 		goto error_no_mem;
 	}
@@ -312,7 +363,7 @@ static struct iio_channel *iio_channel_get_sys(const char *name,
 			iio_chan_spec_from_name(channel->indio_dev,
 						c->map->adc_channel_label);
 
-		if (channel->channel == NULL) {
+		if (!channel->channel) {
 			err = -EINVAL;
 			goto error_no_chan;
 		}
@@ -334,9 +385,9 @@ struct iio_channel *iio_channel_get(struct device *dev,
 	struct iio_channel *channel;
 
 	if (dev) {
-		channel = of_iio_channel_get_by_name(dev->of_node,
-						     channel_name);
-		if (channel != NULL)
+		channel = fwnode_iio_channel_get_by_name(dev_fwnode(dev),
+							 channel_name);
+		if (!IS_ERR(channel) || PTR_ERR(channel) != -ENODEV)
 			return channel;
 	}
 
@@ -353,53 +404,47 @@ void iio_channel_release(struct iio_channel *channel)
 }
 EXPORT_SYMBOL_GPL(iio_channel_release);
 
-static void devm_iio_channel_free(struct device *dev, void *res)
+static void devm_iio_channel_free(void *iio_channel)
 {
-	struct iio_channel *channel = *(struct iio_channel **)res;
-
-	iio_channel_release(channel);
-}
-
-static int devm_iio_channel_match(struct device *dev, void *res, void *data)
-{
-	struct iio_channel **r = res;
-
-	if (!r || !*r) {
-		WARN_ON(!r || !*r);
-		return 0;
-	}
-
-	return *r == data;
+	iio_channel_release(iio_channel);
 }
 
 struct iio_channel *devm_iio_channel_get(struct device *dev,
 					 const char *channel_name)
 {
-	struct iio_channel **ptr, *channel;
-
-	ptr = devres_alloc(devm_iio_channel_free, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return ERR_PTR(-ENOMEM);
+	struct iio_channel *channel;
+	int ret;
 
 	channel = iio_channel_get(dev, channel_name);
-	if (IS_ERR(channel)) {
-		devres_free(ptr);
+	if (IS_ERR(channel))
 		return channel;
-	}
 
-	*ptr = channel;
-	devres_add(dev, ptr);
+	ret = devm_add_action_or_reset(dev, devm_iio_channel_free, channel);
+	if (ret)
+		return ERR_PTR(ret);
 
 	return channel;
 }
 EXPORT_SYMBOL_GPL(devm_iio_channel_get);
 
-void devm_iio_channel_release(struct device *dev, struct iio_channel *channel)
+struct iio_channel *devm_fwnode_iio_channel_get_by_name(struct device *dev,
+							struct fwnode_handle *fwnode,
+							const char *channel_name)
 {
-	WARN_ON(devres_release(dev, devm_iio_channel_free,
-			       devm_iio_channel_match, channel));
+	struct iio_channel *channel;
+	int ret;
+
+	channel = fwnode_iio_channel_get_by_name(fwnode, channel_name);
+	if (IS_ERR(channel))
+		return channel;
+
+	ret = devm_add_action_or_reset(dev, devm_iio_channel_free, channel);
+	if (ret)
+		return ERR_PTR(ret);
+
+	return channel;
 }
-EXPORT_SYMBOL_GPL(devm_iio_channel_release);
+EXPORT_SYMBOL_GPL(devm_fwnode_iio_channel_get_by_name);
 
 struct iio_channel *iio_channel_get_all(struct device *dev)
 {
@@ -410,11 +455,15 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 	int mapind = 0;
 	int i, ret;
 
-	if (dev == NULL)
+	if (!dev)
 		return ERR_PTR(-EINVAL);
 
-	chans = of_iio_channel_get_all(dev);
-	if (chans)
+	chans = fwnode_iio_channel_get_all(dev);
+	/*
+	 * We only want to carry on if the error is -ENODEV.  Anything else
+	 * should be reported up the stack.
+	 */
+	if (!IS_ERR(chans) || PTR_ERR(chans) != -ENODEV)
 		return chans;
 
 	name = dev_name(dev);
@@ -434,7 +483,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 
 	/* NULL terminated array to save passing size */
 	chans = kcalloc(nummaps + 1, sizeof(*chans), GFP_KERNEL);
-	if (chans == NULL) {
+	if (!chans) {
 		ret = -ENOMEM;
 		goto error_ret;
 	}
@@ -448,7 +497,7 @@ struct iio_channel *iio_channel_get_all(struct device *dev)
 		chans[mapind].channel =
 			iio_chan_spec_from_name(chans[mapind].indio_dev,
 						c->map->adc_channel_label);
-		if (chans[mapind].channel == NULL) {
+		if (!chans[mapind].channel) {
 			ret = -EINVAL;
 			goto error_free_chans;
 		}
@@ -486,51 +535,38 @@ void iio_channel_release_all(struct iio_channel *channels)
 }
 EXPORT_SYMBOL_GPL(iio_channel_release_all);
 
-static void devm_iio_channel_free_all(struct device *dev, void *res)
+static void devm_iio_channel_free_all(void *iio_channels)
 {
-	struct iio_channel *channels = *(struct iio_channel **)res;
-
-	iio_channel_release_all(channels);
+	iio_channel_release_all(iio_channels);
 }
 
 struct iio_channel *devm_iio_channel_get_all(struct device *dev)
 {
-	struct iio_channel **ptr, *channels;
-
-	ptr = devres_alloc(devm_iio_channel_free_all, sizeof(*ptr), GFP_KERNEL);
-	if (!ptr)
-		return ERR_PTR(-ENOMEM);
+	struct iio_channel *channels;
+	int ret;
 
 	channels = iio_channel_get_all(dev);
-	if (IS_ERR(channels)) {
-		devres_free(ptr);
+	if (IS_ERR(channels))
 		return channels;
-	}
 
-	*ptr = channels;
-	devres_add(dev, ptr);
+	ret = devm_add_action_or_reset(dev, devm_iio_channel_free_all,
+				       channels);
+	if (ret)
+		return ERR_PTR(ret);
 
 	return channels;
 }
 EXPORT_SYMBOL_GPL(devm_iio_channel_get_all);
 
-void devm_iio_channel_release_all(struct device *dev,
-				  struct iio_channel *channels)
-{
-	WARN_ON(devres_release(dev, devm_iio_channel_free_all,
-			       devm_iio_channel_match, channels));
-}
-EXPORT_SYMBOL_GPL(devm_iio_channel_release_all);
-
 static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
-	enum iio_chan_info_enum info)
+			    enum iio_chan_info_enum info)
 {
 	int unused;
 	int vals[INDIO_MAX_RAW_ELEMENTS];
 	int ret;
 	int val_len = 2;
 
-	if (val2 == NULL)
+	if (!val2)
 		val2 = &unused;
 
 	if (!iio_channel_has_info(chan->channel, info))
@@ -542,26 +578,28 @@ static int iio_channel_read(struct iio_channel *chan, int *val, int *val2,
 					vals, &val_len, info);
 		*val = vals[0];
 		*val2 = vals[1];
-	} else
+	} else {
 		ret = chan->indio_dev->info->read_raw(chan->indio_dev,
 					chan->channel, val, val2, info);
+	}
 
 	return ret;
 }
 
 int iio_read_channel_raw(struct iio_channel *chan, int *val)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -569,47 +607,71 @@ EXPORT_SYMBOL_GPL(iio_read_channel_raw);
 
 int iio_read_channel_average_raw(struct iio_channel *chan, int *val)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_AVERAGE_RAW);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
 EXPORT_SYMBOL_GPL(iio_read_channel_average_raw);
 
 static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
-	int raw, int *processed, unsigned int scale)
+						 int raw, int *processed,
+						 unsigned int scale)
 {
-	int scale_type, scale_val, scale_val2, offset;
+	int scale_type, scale_val, scale_val2;
+	int offset_type, offset_val, offset_val2;
 	s64 raw64 = raw;
-	int ret;
 
-	ret = iio_channel_read(chan, &offset, NULL, IIO_CHAN_INFO_OFFSET);
-	if (ret >= 0)
-		raw64 += offset;
+	offset_type = iio_channel_read(chan, &offset_val, &offset_val2,
+				       IIO_CHAN_INFO_OFFSET);
+	if (offset_type >= 0) {
+		switch (offset_type) {
+		case IIO_VAL_INT:
+			break;
+		case IIO_VAL_INT_PLUS_MICRO:
+		case IIO_VAL_INT_PLUS_NANO:
+			/*
+			 * Both IIO_VAL_INT_PLUS_MICRO and IIO_VAL_INT_PLUS_NANO
+			 * implicitely truncate the offset to it's integer form.
+			 */
+			break;
+		case IIO_VAL_FRACTIONAL:
+			offset_val /= offset_val2;
+			break;
+		case IIO_VAL_FRACTIONAL_LOG2:
+			offset_val >>= offset_val2;
+			break;
+		default:
+			return -EINVAL;
+		}
+
+		raw64 += offset_val;
+	}
 
 	scale_type = iio_channel_read(chan, &scale_val, &scale_val2,
-					IIO_CHAN_INFO_SCALE);
+				      IIO_CHAN_INFO_SCALE);
 	if (scale_type < 0) {
 		/*
-		 * Just pass raw values as processed if no scaling is
-		 * available.
+		 * If no channel scaling is available apply consumer scale to
+		 * raw value and return.
 		 */
-		*processed = raw;
+		*processed = raw * scale;
 		return 0;
 	}
 
 	switch (scale_type) {
 	case IIO_VAL_INT:
-		*processed = raw64 * scale_val;
+		*processed = raw64 * scale_val * scale;
 		break;
 	case IIO_VAL_INT_PLUS_MICRO:
 		if (scale_val2 < 0)
@@ -642,20 +704,21 @@ static int iio_convert_raw_to_processed_unlocked(struct iio_channel *chan,
 }
 
 int iio_convert_raw_to_processed(struct iio_channel *chan, int raw,
-	int *processed, unsigned int scale)
+				 int *processed, unsigned int scale)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_convert_raw_to_processed_unlocked(chan, raw, processed,
-							scale);
+						    scale);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -664,17 +727,18 @@ EXPORT_SYMBOL_GPL(iio_convert_raw_to_processed);
 int iio_read_channel_attribute(struct iio_channel *chan, int *val, int *val2,
 			       enum iio_chan_info_enum attribute)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_channel_read(chan, val, val2, attribute);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -686,12 +750,14 @@ int iio_read_channel_offset(struct iio_channel *chan, int *val, int *val2)
 }
 EXPORT_SYMBOL_GPL(iio_read_channel_offset);
 
-int iio_read_channel_processed(struct iio_channel *chan, int *val)
+int iio_read_channel_processed_scale(struct iio_channel *chan, int *val,
+				     unsigned int scale)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
@@ -699,18 +765,29 @@ int iio_read_channel_processed(struct iio_channel *chan, int *val)
 	if (iio_channel_has_info(chan->channel, IIO_CHAN_INFO_PROCESSED)) {
 		ret = iio_channel_read(chan, val, NULL,
 				       IIO_CHAN_INFO_PROCESSED);
+		if (ret < 0)
+			goto err_unlock;
+		*val *= scale;
 	} else {
 		ret = iio_channel_read(chan, val, NULL, IIO_CHAN_INFO_RAW);
 		if (ret < 0)
 			goto err_unlock;
-		ret = iio_convert_raw_to_processed_unlocked(chan, *val, val, 1);
+		ret = iio_convert_raw_to_processed_unlocked(chan, *val, val,
+							    scale);
 	}
 
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
+EXPORT_SYMBOL_GPL(iio_read_channel_processed_scale);
+
+int iio_read_channel_processed(struct iio_channel *chan, int *val)
+{
+	/* This is just a special case with scale factor 1 */
+	return iio_read_channel_processed_scale(chan, val, 1);
+}
 EXPORT_SYMBOL_GPL(iio_read_channel_processed);
 
 int iio_read_channel_scale(struct iio_channel *chan, int *val, int *val2)
@@ -734,9 +811,10 @@ int iio_read_avail_channel_attribute(struct iio_channel *chan,
 				     const int **vals, int *type, int *length,
 				     enum iio_chan_info_enum attribute)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
 	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
@@ -744,7 +822,7 @@ int iio_read_avail_channel_attribute(struct iio_channel *chan,
 
 	ret = iio_channel_read_avail(chan, vals, type, length, attribute);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -757,7 +835,7 @@ int iio_read_avail_channel_raw(struct iio_channel *chan,
 	int type;
 
 	ret = iio_read_avail_channel_attribute(chan, vals, &type, length,
-					 IIO_CHAN_INFO_RAW);
+					       IIO_CHAN_INFO_RAW);
 
 	if (ret >= 0 && type != IIO_VAL_INT)
 		/* raw values are assumed to be IIO_VAL_INT */
@@ -816,10 +894,11 @@ static int iio_channel_read_max(struct iio_channel *chan,
 
 int iio_read_max_channel_raw(struct iio_channel *chan, int *val)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 	int type;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
 	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
@@ -827,7 +906,7 @@ int iio_read_max_channel_raw(struct iio_channel *chan, int *val)
 
 	ret = iio_channel_read_max(chan, val, NULL, &type, IIO_CHAN_INFO_RAW);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -835,18 +914,19 @@ EXPORT_SYMBOL_GPL(iio_read_max_channel_raw);
 
 int iio_get_channel_type(struct iio_channel *chan, enum iio_chan_type *type)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret = 0;
 	/* Need to verify underlying driver has not gone away */
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	*type = chan->channel->type;
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -862,17 +942,18 @@ static int iio_channel_write(struct iio_channel *chan, int val, int val2,
 int iio_write_channel_attribute(struct iio_channel *chan, int val, int val2,
 				enum iio_chan_info_enum attribute)
 {
+	struct iio_dev_opaque *iio_dev_opaque = to_iio_dev_opaque(chan->indio_dev);
 	int ret;
 
-	mutex_lock(&chan->indio_dev->info_exist_lock);
-	if (chan->indio_dev->info == NULL) {
+	mutex_lock(&iio_dev_opaque->info_exist_lock);
+	if (!chan->indio_dev->info) {
 		ret = -ENODEV;
 		goto err_unlock;
 	}
 
 	ret = iio_channel_write(chan, val, val2, attribute);
 err_unlock:
-	mutex_unlock(&chan->indio_dev->info_exist_lock);
+	mutex_unlock(&iio_dev_opaque->info_exist_lock);
 
 	return ret;
 }
@@ -899,9 +980,8 @@ unsigned int iio_get_channel_ext_info_count(struct iio_channel *chan)
 }
 EXPORT_SYMBOL_GPL(iio_get_channel_ext_info_count);
 
-static const struct iio_chan_spec_ext_info *iio_lookup_ext_info(
-						const struct iio_channel *chan,
-						const char *attr)
+static const struct iio_chan_spec_ext_info *
+iio_lookup_ext_info(const struct iio_channel *chan, const char *attr)
 {
 	const struct iio_chan_spec_ext_info *ext_info;
 
diff --git a/drivers/iio/light/Kconfig b/drivers/iio/light/Kconfig
index 9968f982fbc7..7cf6e8490123 100644
--- a/drivers/iio/light/Kconfig
+++ b/drivers/iio/light/Kconfig
@@ -43,6 +43,16 @@ config ADUX1020
 	 To compile this driver as a module, choose M here: the
 	 module will be called adux1020.
 
+config AL3010
+	tristate "AL3010 ambient light sensor"
+	depends on I2C
+	help
+	  Say Y here if you want to build a driver for the Dyna Image AL3010
+	  ambient light sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called al3010.
+
 config AL3320A
 	tristate "AL3320A ambient light sensor"
 	depends on I2C
@@ -76,6 +86,21 @@ config APDS9960
 	  To compile this driver as a module, choose M here: the
 	  module will be called apds9960
 
+config AS73211
+	tristate "AMS AS73211 XYZ color sensor"
+	depends on I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	 If you say yes here you get support for the AMS AS73211
+	 JENCOLOR(R) Digital XYZ Sensor.
+
+	 For triggered measurements, you will need an additional trigger driver
+	 like IIO_HRTIMER_TRIGGER or IIO_SYSFS_TRIGGER.
+
+	 This driver can also be built as a module.  If so, the module
+	 will be called as73211.
+
 config BH1750
 	tristate "ROHM BH1750 ambient light sensor"
 	depends on I2C
@@ -130,7 +155,6 @@ config CM3323
 
 config CM3605
 	tristate "Capella CM3605 ambient light and proximity sensor"
-	depends on OF
 	help
 	  Say Y here if you want to build a driver for Capella CM3605
 	  ambient light and short range proximity sensor.
@@ -159,6 +183,17 @@ config IIO_CROS_EC_LIGHT_PROX
 	  To compile this driver as a module, choose M here:
 	  the module will be called cros_ec_light_prox.
 
+config GP2AP002
+	tristate "Sharp GP2AP002 Proximity/ALS sensor"
+	depends on I2C
+	select REGMAP
+	help
+	  Say Y here if you have a Sharp GP2AP002 proximity/ALS combo-chip
+	  hooked to an I2C bus.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called gp2ap002.
+
 config GP2AP020A00F
 	tristate "Sharp GP2AP020A00F Proximity/ALS sensor"
 	depends on I2C
@@ -173,6 +208,16 @@ config GP2AP020A00F
 	  To compile this driver as a module, choose M here: the
 	  module will be called gp2ap020a00f.
 
+config IQS621_ALS
+	tristate "Azoteq IQS621/622 ambient light sensors"
+	depends on MFD_IQS62X || COMPILE_TEST
+	help
+	  Say Y here if you want to build support for the Azoteq IQS621
+	  and IQS622 ambient light sensors.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called iqs621-als.
+
 config SENSORS_ISL29018
 	tristate "Intersil 29018 light and proximity sensor"
 	depends on I2C
@@ -210,7 +255,6 @@ config ISL29125
 config HID_SENSOR_ALS
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID ALS"
@@ -224,7 +268,6 @@ config HID_SENSOR_ALS
 config HID_SENSOR_PROX
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID PROX"
@@ -288,6 +331,17 @@ config LTR501
 	  This driver can also be built as a module.  If so, the module
 	  will be called ltr501.
 
+config LTRF216A
+	tristate "Liteon LTRF216A Light Sensor"
+	depends on I2C
+	select REGMAP_I2C
+	help
+	  If you say Y or M here, you get support for Liteon LTRF216A
+	  Ambient Light Sensor.
+
+	  If built as a dynamically linked module, it will be called
+	  ltrf216a.
+
 config LV0104CS
 	tristate "LV0104CS Ambient Light Sensor"
 	depends on I2C
@@ -455,6 +509,17 @@ config TSL2583
 	  Provides support for the TAOS tsl2580, tsl2581 and tsl2583 devices.
 	  Access ALS data via iio, sysfs.
 
+config TSL2591
+        tristate "TAOS TSL2591 ambient light sensor"
+        depends on I2C
+        help
+          Select Y here for support of the AMS/TAOS TSL2591 ambient light sensor,
+          featuring channels for combined visible + IR intensity and lux illuminance.
+          Access data via iio and sysfs. Supports iio_events.
+
+          To compile this driver as a module, select M: the
+          module will be called tsl2591.
+
 config TSL2772
 	tristate "TAOS TSL/TMD2x71 and TSL/TMD2x72 Family of light and proximity sensors"
 	depends on I2C
@@ -485,6 +550,8 @@ config US5182D
 
 config VCNL4000
 	tristate "VCNL4000/4010/4020/4200 combined ALS and proximity sensor"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
 	depends on I2C
 	help
 	  Say Y here if you want to build a driver for the Vishay VCNL4000,
@@ -496,6 +563,7 @@ config VCNL4000
 
 config VCNL4035
 	tristate "VCNL4035 combined ALS and proximity sensor"
+	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
 	select REGMAP_I2C
 	depends on I2C
diff --git a/drivers/iio/light/Makefile b/drivers/iio/light/Makefile
index c98d1cefb861..6f23817fae6f 100644
--- a/drivers/iio/light/Makefile
+++ b/drivers/iio/light/Makefile
@@ -7,9 +7,11 @@
 obj-$(CONFIG_ACPI_ALS)		+= acpi-als.o
 obj-$(CONFIG_ADJD_S311)		+= adjd_s311.o
 obj-$(CONFIG_ADUX1020)		+= adux1020.o
+obj-$(CONFIG_AL3010)		+= al3010.o
 obj-$(CONFIG_AL3320A)		+= al3320a.o
 obj-$(CONFIG_APDS9300)		+= apds9300.o
 obj-$(CONFIG_APDS9960)		+= apds9960.o
+obj-$(CONFIG_AS73211)		+= as73211.o
 obj-$(CONFIG_BH1750)		+= bh1750.o
 obj-$(CONFIG_BH1780)		+= bh1780.o
 obj-$(CONFIG_CM32181)		+= cm32181.o
@@ -18,15 +20,18 @@ obj-$(CONFIG_CM3323)		+= cm3323.o
 obj-$(CONFIG_CM3605)		+= cm3605.o
 obj-$(CONFIG_CM36651)		+= cm36651.o
 obj-$(CONFIG_IIO_CROS_EC_LIGHT_PROX) += cros_ec_light_prox.o
+obj-$(CONFIG_GP2AP002)		+= gp2ap002.o
 obj-$(CONFIG_GP2AP020A00F)	+= gp2ap020a00f.o
 obj-$(CONFIG_HID_SENSOR_ALS)	+= hid-sensor-als.o
 obj-$(CONFIG_HID_SENSOR_PROX)	+= hid-sensor-prox.o
+obj-$(CONFIG_IQS621_ALS)	+= iqs621-als.o
 obj-$(CONFIG_SENSORS_ISL29018)	+= isl29018.o
 obj-$(CONFIG_SENSORS_ISL29028)	+= isl29028.o
 obj-$(CONFIG_ISL29125)		+= isl29125.o
 obj-$(CONFIG_JSA1212)		+= jsa1212.o
 obj-$(CONFIG_SENSORS_LM3533)	+= lm3533-als.o
 obj-$(CONFIG_LTR501)		+= ltr501.o
+obj-$(CONFIG_LTRF216A)		+= ltrf216a.o
 obj-$(CONFIG_LV0104CS)		+= lv0104cs.o
 obj-$(CONFIG_MAX44000)		+= max44000.o
 obj-$(CONFIG_MAX44009)		+= max44009.o
@@ -44,6 +49,7 @@ obj-$(CONFIG_ST_UVIS25_SPI)	+= st_uvis25_spi.o
 obj-$(CONFIG_TCS3414)		+= tcs3414.o
 obj-$(CONFIG_TCS3472)		+= tcs3472.o
 obj-$(CONFIG_TSL2583)		+= tsl2583.o
+obj-$(CONFIG_TSL2591)		+= tsl2591.o
 obj-$(CONFIG_TSL2772)		+= tsl2772.o
 obj-$(CONFIG_TSL4531)		+= tsl4531.o
 obj-$(CONFIG_US5182D)		+= us5182d.o
diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c
index 1eafd0b24e18..e1ff6f524f4b 100644
--- a/drivers/iio/light/acpi-als.c
+++ b/drivers/iio/light/acpi-als.c
@@ -16,18 +16,19 @@
 #include <linux/module.h>
 #include <linux/acpi.h>
 #include <linux/err.h>
+#include <linux/irq.h>
 #include <linux/mutex.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/kfifo_buf.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
 
 #define ACPI_ALS_CLASS			"als"
 #define ACPI_ALS_DEVICE_NAME		"acpi-als"
 #define ACPI_ALS_NOTIFY_ILLUMINANCE	0x80
 
-ACPI_MODULE_NAME("acpi-als");
-
 /*
  * So far, there's only one channel in here, but the specification for
  * ACPI0008 says there can be more to what the block can report. Like
@@ -45,24 +46,23 @@ static const struct iio_chan_spec acpi_als_channels[] = {
 		.info_mask_separate	= BIT(IIO_CHAN_INFO_RAW) |
 					  BIT(IIO_CHAN_INFO_PROCESSED),
 	},
+	IIO_CHAN_SOFT_TIMESTAMP(1),
 };
 
 /*
  * The event buffer contains timestamp and all the data from
  * the ACPI0008 block. There are multiple, but so far we only
- * support _ALI (illuminance). Once someone adds new channels
- * to acpi_als_channels[], the evt_buffer below will grow
- * automatically.
+ * support _ALI (illuminance): One channel, padding and timestamp.
  */
-#define ACPI_ALS_EVT_NR_SOURCES		ARRAY_SIZE(acpi_als_channels)
 #define ACPI_ALS_EVT_BUFFER_SIZE		\
-	(sizeof(s64) + (ACPI_ALS_EVT_NR_SOURCES * sizeof(s32)))
+	(sizeof(s32) + sizeof(s32) + sizeof(s64))
 
 struct acpi_als {
 	struct acpi_device	*device;
 	struct mutex		lock;
+	struct iio_trigger	*trig;
 
-	s32			evt_buffer[ACPI_ALS_EVT_BUFFER_SIZE];
+	s32 evt_buffer[ACPI_ALS_EVT_BUFFER_SIZE / sizeof(s32)]  __aligned(8);
 };
 
 /*
@@ -91,7 +91,7 @@ static int acpi_als_read_value(struct acpi_als *als, char *prop, s32 *val)
 				       &temp_val);
 
 	if (ACPI_FAILURE(status)) {
-		ACPI_EXCEPTION((AE_INFO, status, "Error reading ALS %s", prop));
+		acpi_evaluation_failure_warn(als->device->handle, prop, status);
 		return -EIO;
 	}
 
@@ -104,33 +104,19 @@ static void acpi_als_notify(struct acpi_device *device, u32 event)
 {
 	struct iio_dev *indio_dev = acpi_driver_data(device);
 	struct acpi_als *als = iio_priv(indio_dev);
-	s32 *buffer = als->evt_buffer;
-	s64 time_ns = iio_get_time_ns(indio_dev);
-	s32 val;
-	int ret;
 
-	mutex_lock(&als->lock);
-
-	memset(buffer, 0, ACPI_ALS_EVT_BUFFER_SIZE);
-
-	switch (event) {
-	case ACPI_ALS_NOTIFY_ILLUMINANCE:
-		ret = acpi_als_read_value(als, ACPI_ALS_ILLUMINANCE, &val);
-		if (ret < 0)
-			goto out;
-		*buffer++ = val;
-		break;
-	default:
-		/* Unhandled event */
-		dev_dbg(&device->dev, "Unhandled ACPI ALS event (%08x)!\n",
-			event);
-		goto out;
+	if (iio_buffer_enabled(indio_dev) && iio_trigger_using_own(indio_dev)) {
+		switch (event) {
+		case ACPI_ALS_NOTIFY_ILLUMINANCE:
+			iio_trigger_poll_chained(als->trig);
+			break;
+		default:
+			/* Unhandled event */
+			dev_dbg(&device->dev,
+				"Unhandled ACPI ALS event (%08x)!\n",
+				event);
+		}
 	}
-
-	iio_push_to_buffers_with_timestamp(indio_dev, als->evt_buffer, time_ns);
-
-out:
-	mutex_unlock(&als->lock);
 }
 
 static int acpi_als_read_raw(struct iio_dev *indio_dev,
@@ -161,13 +147,49 @@ static const struct iio_info acpi_als_info = {
 	.read_raw		= acpi_als_read_raw,
 };
 
+static irqreturn_t acpi_als_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct acpi_als *als = iio_priv(indio_dev);
+	s32 *buffer = als->evt_buffer;
+	s32 val;
+	int ret;
+
+	mutex_lock(&als->lock);
+
+	ret = acpi_als_read_value(als, ACPI_ALS_ILLUMINANCE, &val);
+	if (ret < 0)
+		goto out;
+	*buffer = val;
+
+	/*
+	 * When coming from own trigger via polls, set polling function
+	 * timestamp here. Given ACPI notifier is already in a thread and call
+	 * function directly, there is no need to set the timestamp in the
+	 * notify function.
+	 *
+	 * If the timestamp was actually 0, the timestamp is set one more time.
+	 */
+	if (!pf->timestamp)
+		pf->timestamp = iio_get_time_ns(indio_dev);
+
+	iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp);
+out:
+	mutex_unlock(&als->lock);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
 static int acpi_als_add(struct acpi_device *device)
 {
-	struct acpi_als *als;
+	struct device *dev = &device->dev;
 	struct iio_dev *indio_dev;
-	struct iio_buffer *buffer;
+	struct acpi_als *als;
+	int ret;
 
-	indio_dev = devm_iio_device_alloc(&device->dev, sizeof(*als));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*als));
 	if (!indio_dev)
 		return -ENOMEM;
 
@@ -178,19 +200,32 @@ static int acpi_als_add(struct acpi_device *device)
 	mutex_init(&als->lock);
 
 	indio_dev->name = ACPI_ALS_DEVICE_NAME;
-	indio_dev->dev.parent = &device->dev;
 	indio_dev->info = &acpi_als_info;
-	indio_dev->modes = INDIO_BUFFER_SOFTWARE;
 	indio_dev->channels = acpi_als_channels;
 	indio_dev->num_channels = ARRAY_SIZE(acpi_als_channels);
 
-	buffer = devm_iio_kfifo_allocate(&device->dev);
-	if (!buffer)
+	als->trig = devm_iio_trigger_alloc(dev, "%s-dev%d", indio_dev->name,
+					   iio_device_id(indio_dev));
+	if (!als->trig)
 		return -ENOMEM;
 
-	iio_device_attach_buffer(indio_dev, buffer);
+	ret = devm_iio_trigger_register(dev, als->trig);
+	if (ret)
+		return ret;
+	/*
+	 * Set hardware trigger by default to let events flow when
+	 * BIOS support notification.
+	 */
+	indio_dev->trig = iio_trigger_get(als->trig);
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      acpi_als_trigger_handler,
+					      NULL);
+	if (ret)
+		return ret;
 
-	return devm_iio_device_register(&device->dev, indio_dev);
+	return devm_iio_device_register(dev, indio_dev);
 }
 
 static const struct acpi_device_id acpi_als_device_ids[] = {
diff --git a/drivers/iio/light/adjd_s311.c b/drivers/iio/light/adjd_s311.c
index d3269cd44fb5..6b33975c8d73 100644
--- a/drivers/iio/light/adjd_s311.c
+++ b/drivers/iio/light/adjd_s311.c
@@ -54,7 +54,10 @@
 
 struct adjd_s311_data {
 	struct i2c_client *client;
-	u16 *buffer;
+	struct {
+		s16 chans[4];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 enum adjd_s311_channel_idx {
@@ -129,10 +132,10 @@ static irqreturn_t adjd_s311_trigger_handler(int irq, void *p)
 		if (ret < 0)
 			goto done;
 
-		data->buffer[j++] = ret & ADJD_S311_DATA_MASK;
+		data->scan.chans[j++] = ret & ADJD_S311_DATA_MASK;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, time_ns);
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan, time_ns);
 
 done:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -225,23 +228,9 @@ static int adjd_s311_write_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
-static int adjd_s311_update_scan_mode(struct iio_dev *indio_dev,
-	const unsigned long *scan_mask)
-{
-	struct adjd_s311_data *data = iio_priv(indio_dev);
-
-	kfree(data->buffer);
-	data->buffer = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-	if (data->buffer == NULL)
-		return -ENOMEM;
-
-	return 0;
-}
-
 static const struct iio_info adjd_s311_info = {
 	.read_raw = adjd_s311_read_raw,
 	.write_raw = adjd_s311_write_raw,
-	.update_scan_mode = adjd_s311_update_scan_mode,
 };
 
 static int adjd_s311_probe(struct i2c_client *client,
@@ -256,44 +245,20 @@ static int adjd_s311_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	data = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &adjd_s311_info;
 	indio_dev->name = ADJD_S311_DRV_NAME;
 	indio_dev->channels = adjd_s311_channels;
 	indio_dev->num_channels = ARRAY_SIZE(adjd_s311_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	err = iio_triggered_buffer_setup(indio_dev, NULL,
-		adjd_s311_trigger_handler, NULL);
+	err = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL,
+					      adjd_s311_trigger_handler, NULL);
 	if (err < 0)
 		return err;
 
-	err = iio_device_register(indio_dev);
-	if (err)
-		goto exit_unreg_buffer;
-
-	dev_info(&client->dev, "ADJD-S311 color sensor registered\n");
-
-	return 0;
-
-exit_unreg_buffer:
-	iio_triggered_buffer_cleanup(indio_dev);
-	return err;
-}
-
-static int adjd_s311_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct adjd_s311_data *data = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(data->buffer);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id adjd_s311_id[] = {
@@ -307,7 +272,6 @@ static struct i2c_driver adjd_s311_driver = {
 		.name	= ADJD_S311_DRV_NAME,
 	},
 	.probe		= adjd_s311_probe,
-	.remove		= adjd_s311_remove,
 	.id_table	= adjd_s311_id,
 };
 module_i2c_driver(adjd_s311_driver);
diff --git a/drivers/iio/light/adux1020.c b/drivers/iio/light/adux1020.c
index b07797ac10d7..9aa28695e6f1 100644
--- a/drivers/iio/light/adux1020.c
+++ b/drivers/iio/light/adux1020.c
@@ -785,7 +785,6 @@ static int adux1020_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &adux1020_info;
 	indio_dev->name = ADUX1020_DRV_NAME;
 	indio_dev->channels = adux1020_channels;
diff --git a/drivers/iio/light/al3010.c b/drivers/iio/light/al3010.c
new file mode 100644
index 000000000000..ce5363845b22
--- /dev/null
+++ b/drivers/iio/light/al3010.c
@@ -0,0 +1,241 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * AL3010 - Dyna Image Ambient Light Sensor
+ *
+ * Copyright (c) 2014, Intel Corporation.
+ * Copyright (c) 2016, Dyna-Image Corp.
+ * Copyright (c) 2020, David Heidelberg, Michał Mirosław, Dmitry Osipenko
+ *
+ * IIO driver for AL3010 (7-bit I2C slave address 0x1C).
+ *
+ * TODO: interrupt support, thresholds
+ * When the driver will get support for interrupt handling, then interrupt
+ * will need to be disabled before turning sensor OFF in order to avoid
+ * potential races with the interrupt handling.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#define AL3010_DRV_NAME "al3010"
+
+#define AL3010_REG_SYSTEM		0x00
+#define AL3010_REG_DATA_LOW		0x0c
+#define AL3010_REG_CONFIG		0x10
+
+#define AL3010_CONFIG_DISABLE		0x00
+#define AL3010_CONFIG_ENABLE		0x01
+
+#define AL3010_GAIN_MASK		GENMASK(6,4)
+
+#define AL3010_SCALE_AVAILABLE "1.1872 0.2968 0.0742 0.018"
+
+enum al3xxxx_range {
+	AL3XXX_RANGE_1, /* 77806 lx */
+	AL3XXX_RANGE_2, /* 19542 lx */
+	AL3XXX_RANGE_3, /*  4863 lx */
+	AL3XXX_RANGE_4  /*  1216 lx */
+};
+
+static const int al3010_scales[][2] = {
+	{0, 1187200}, {0, 296800}, {0, 74200}, {0, 18600}
+};
+
+struct al3010_data {
+	struct i2c_client *client;
+};
+
+static const struct iio_chan_spec al3010_channels[] = {
+	{
+		.type	= IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+	}
+};
+
+static IIO_CONST_ATTR(in_illuminance_scale_available, AL3010_SCALE_AVAILABLE);
+
+static struct attribute *al3010_attributes[] = {
+	&iio_const_attr_in_illuminance_scale_available.dev_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group al3010_attribute_group = {
+	.attrs = al3010_attributes,
+};
+
+static int al3010_set_pwr(struct i2c_client *client, bool pwr)
+{
+	u8 val = pwr ? AL3010_CONFIG_ENABLE : AL3010_CONFIG_DISABLE;
+	return i2c_smbus_write_byte_data(client, AL3010_REG_SYSTEM, val);
+}
+
+static void al3010_set_pwr_off(void *_data)
+{
+	struct al3010_data *data = _data;
+
+	al3010_set_pwr(data->client, false);
+}
+
+static int al3010_init(struct al3010_data *data)
+{
+	int ret;
+
+	ret = al3010_set_pwr(data->client, true);
+
+	if (ret < 0)
+		return ret;
+
+	ret = i2c_smbus_write_byte_data(data->client, AL3010_REG_CONFIG,
+					FIELD_PREP(AL3010_GAIN_MASK,
+						   AL3XXX_RANGE_3));
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static int al3010_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan, int *val,
+			   int *val2, long mask)
+{
+	struct al3010_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		/*
+		 * ALS ADC value is stored in two adjacent registers:
+		 * - low byte of output is stored at AL3010_REG_DATA_LOW
+		 * - high byte of output is stored at AL3010_REG_DATA_LOW + 1
+		 */
+		ret = i2c_smbus_read_word_data(data->client,
+					       AL3010_REG_DATA_LOW);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		ret = i2c_smbus_read_byte_data(data->client,
+					       AL3010_REG_CONFIG);
+		if (ret < 0)
+			return ret;
+
+		ret = FIELD_GET(AL3010_GAIN_MASK, ret);
+		*val = al3010_scales[ret][0];
+		*val2 = al3010_scales[ret][1];
+
+		return IIO_VAL_INT_PLUS_MICRO;
+	}
+	return -EINVAL;
+}
+
+static int al3010_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, int val,
+			    int val2, long mask)
+{
+	struct al3010_data *data = iio_priv(indio_dev);
+	int i;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SCALE:
+		for (i = 0; i < ARRAY_SIZE(al3010_scales); i++) {
+			if (val != al3010_scales[i][0] ||
+			    val2 != al3010_scales[i][1])
+				continue;
+
+			return i2c_smbus_write_byte_data(data->client,
+					AL3010_REG_CONFIG,
+					FIELD_PREP(AL3010_GAIN_MASK, i));
+		}
+		break;
+	}
+	return -EINVAL;
+}
+
+static const struct iio_info al3010_info = {
+	.read_raw	= al3010_read_raw,
+	.write_raw	= al3010_write_raw,
+	.attrs		= &al3010_attribute_group,
+};
+
+static int al3010_probe(struct i2c_client *client,
+			const struct i2c_device_id *id)
+{
+	struct al3010_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+
+	indio_dev->info = &al3010_info;
+	indio_dev->name = AL3010_DRV_NAME;
+	indio_dev->channels = al3010_channels;
+	indio_dev->num_channels = ARRAY_SIZE(al3010_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = al3010_init(data);
+	if (ret < 0) {
+		dev_err(&client->dev, "al3010 chip init failed\n");
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&client->dev,
+					al3010_set_pwr_off,
+					data);
+	if (ret < 0)
+		return ret;
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static int al3010_suspend(struct device *dev)
+{
+	return al3010_set_pwr(to_i2c_client(dev), false);
+}
+
+static int al3010_resume(struct device *dev)
+{
+	return al3010_set_pwr(to_i2c_client(dev), true);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(al3010_pm_ops, al3010_suspend, al3010_resume);
+
+static const struct i2c_device_id al3010_id[] = {
+	{"al3010", },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, al3010_id);
+
+static const struct of_device_id al3010_of_match[] = {
+	{ .compatible = "dynaimage,al3010", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, al3010_of_match);
+
+static struct i2c_driver al3010_driver = {
+	.driver = {
+		.name = AL3010_DRV_NAME,
+		.of_match_table = al3010_of_match,
+		.pm = pm_sleep_ptr(&al3010_pm_ops),
+	},
+	.probe		= al3010_probe,
+	.id_table	= al3010_id,
+};
+module_i2c_driver(al3010_driver);
+
+MODULE_AUTHOR("Daniel Baluta <daniel.baluta@nxp.com>");
+MODULE_AUTHOR("David Heidelberg <david@ixit.cz>");
+MODULE_DESCRIPTION("AL3010 Ambient Light Sensor driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/light/al3320a.c b/drivers/iio/light/al3320a.c
index a21aa99e74e4..bc99179728ed 100644
--- a/drivers/iio/light/al3320a.c
+++ b/drivers/iio/light/al3320a.c
@@ -7,11 +7,15 @@
  * IIO driver for AL3320A (7-bit I2C slave address 0x1C).
  *
  * TODO: interrupt support, thresholds
+ * When the driver will get support for interrupt handling, then interrupt
+ * will need to be disabled before turning sensor OFF in order to avoid
+ * potential races with the interrupt handling.
  */
 
-#include <linux/module.h>
-#include <linux/init.h>
+#include <linux/bitfield.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/of.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -36,8 +40,7 @@
 #define AL3320A_CONFIG_DISABLE		0x00
 #define AL3320A_CONFIG_ENABLE		0x01
 
-#define AL3320A_GAIN_SHIFT		1
-#define AL3320A_GAIN_MASK		(BIT(2) | BIT(1))
+#define AL3320A_GAIN_MASK		GENMASK(2, 1)
 
 /* chip params default values */
 #define AL3320A_DEFAULT_MEAN_TIME	4
@@ -79,18 +82,31 @@ static const struct attribute_group al3320a_attribute_group = {
 	.attrs = al3320a_attributes,
 };
 
+static int al3320a_set_pwr(struct i2c_client *client, bool pwr)
+{
+	u8 val = pwr ? AL3320A_CONFIG_ENABLE : AL3320A_CONFIG_DISABLE;
+	return i2c_smbus_write_byte_data(client, AL3320A_REG_CONFIG, val);
+}
+
+static void al3320a_set_pwr_off(void *_data)
+{
+	struct al3320a_data *data = _data;
+
+	al3320a_set_pwr(data->client, false);
+}
+
 static int al3320a_init(struct al3320a_data *data)
 {
 	int ret;
 
-	/* power on */
-	ret = i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG,
-					AL3320A_CONFIG_ENABLE);
+	ret = al3320a_set_pwr(data->client, true);
+
 	if (ret < 0)
 		return ret;
 
 	ret = i2c_smbus_write_byte_data(data->client, AL3320A_REG_CONFIG_RANGE,
-					AL3320A_RANGE_3 << AL3320A_GAIN_SHIFT);
+					FIELD_PREP(AL3320A_GAIN_MASK,
+						   AL3320A_RANGE_3));
 	if (ret < 0)
 		return ret;
 
@@ -133,7 +149,7 @@ static int al3320a_read_raw(struct iio_dev *indio_dev,
 		if (ret < 0)
 			return ret;
 
-		ret = (ret & AL3320A_GAIN_MASK) >> AL3320A_GAIN_SHIFT;
+		ret = FIELD_GET(AL3320A_GAIN_MASK, ret);
 		*val = al3320a_scales[ret][0];
 		*val2 = al3320a_scales[ret][1];
 
@@ -152,11 +168,13 @@ static int al3320a_write_raw(struct iio_dev *indio_dev,
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
 		for (i = 0; i < ARRAY_SIZE(al3320a_scales); i++) {
-			if (val == al3320a_scales[i][0] &&
-			    val2 == al3320a_scales[i][1])
-				return i2c_smbus_write_byte_data(data->client,
+			if (val != al3320a_scales[i][0] ||
+			    val2 != al3320a_scales[i][1])
+				continue;
+
+			return i2c_smbus_write_byte_data(data->client,
 					AL3320A_REG_CONFIG_RANGE,
-					i << AL3320A_GAIN_SHIFT);
+					FIELD_PREP(AL3320A_GAIN_MASK, i));
 		}
 		break;
 	}
@@ -184,7 +202,6 @@ static int al3320a_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &al3320a_info;
 	indio_dev->name = AL3320A_DRV_NAME;
 	indio_dev->channels = al3320a_channels;
@@ -196,27 +213,48 @@ static int al3320a_probe(struct i2c_client *client,
 		dev_err(&client->dev, "al3320a chip init failed\n");
 		return ret;
 	}
+
+	ret = devm_add_action_or_reset(&client->dev,
+					al3320a_set_pwr_off,
+					data);
+	if (ret < 0)
+		return ret;
+
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-static int al3320a_remove(struct i2c_client *client)
+static int al3320a_suspend(struct device *dev)
+{
+	return al3320a_set_pwr(to_i2c_client(dev), false);
+}
+
+static int al3320a_resume(struct device *dev)
 {
-	return i2c_smbus_write_byte_data(client, AL3320A_REG_CONFIG,
-					 AL3320A_CONFIG_DISABLE);
+	return al3320a_set_pwr(to_i2c_client(dev), true);
 }
 
+static DEFINE_SIMPLE_DEV_PM_OPS(al3320a_pm_ops, al3320a_suspend,
+				al3320a_resume);
+
 static const struct i2c_device_id al3320a_id[] = {
 	{"al3320a", 0},
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, al3320a_id);
 
+static const struct of_device_id al3320a_of_match[] = {
+	{ .compatible = "dynaimage,al3320a", },
+	{},
+};
+MODULE_DEVICE_TABLE(of, al3320a_of_match);
+
 static struct i2c_driver al3320a_driver = {
 	.driver = {
 		.name = AL3320A_DRV_NAME,
+		.of_match_table = al3320a_of_match,
+		.pm = pm_sleep_ptr(&al3320a_pm_ops),
 	},
 	.probe		= al3320a_probe,
-	.remove		= al3320a_remove,
 	.id_table	= al3320a_id,
 };
 
diff --git a/drivers/iio/light/apds9300.c b/drivers/iio/light/apds9300.c
index 856b6c468dea..b70f2681bcb3 100644
--- a/drivers/iio/light/apds9300.c
+++ b/drivers/iio/light/apds9300.c
@@ -419,7 +419,6 @@ static int apds9300_probe(struct i2c_client *client,
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = apds9300_channels;
 	indio_dev->num_channels = ARRAY_SIZE(apds9300_channels);
 	indio_dev->name = APDS9300_DRV_NAME;
@@ -453,7 +452,7 @@ err:
 	return ret;
 }
 
-static int apds9300_remove(struct i2c_client *client)
+static void apds9300_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct apds9300_data *data = iio_priv(indio_dev);
@@ -463,11 +462,8 @@ static int apds9300_remove(struct i2c_client *client)
 	/* Ensure that power off and interrupts are disabled */
 	apds9300_set_intr_state(data, 0);
 	apds9300_set_power_state(data, 0);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int apds9300_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -494,11 +490,8 @@ static int apds9300_resume(struct device *dev)
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(apds9300_pm_ops, apds9300_suspend, apds9300_resume);
-#define APDS9300_PM_OPS (&apds9300_pm_ops)
-#else
-#define APDS9300_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(apds9300_pm_ops, apds9300_suspend,
+				apds9300_resume);
 
 static const struct i2c_device_id apds9300_id[] = {
 	{ APDS9300_DRV_NAME, 0 },
@@ -510,7 +503,7 @@ MODULE_DEVICE_TABLE(i2c, apds9300_id);
 static struct i2c_driver apds9300_driver = {
 	.driver = {
 		.name	= APDS9300_DRV_NAME,
-		.pm	= APDS9300_PM_OPS,
+		.pm	= pm_sleep_ptr(&apds9300_pm_ops),
 	},
 	.probe		= apds9300_probe,
 	.remove		= apds9300_remove,
diff --git a/drivers/iio/light/apds9960.c b/drivers/iio/light/apds9960.c
index 52f86bc777dd..b62c139baf41 100644
--- a/drivers/iio/light/apds9960.c
+++ b/drivers/iio/light/apds9960.c
@@ -8,6 +8,7 @@
  * TODO: gesture + proximity calib offsets
  */
 
+#include <linux/acpi.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
@@ -561,7 +562,7 @@ static int apds9960_write_raw(struct iio_dev *indio_dev,
 		}
 	default:
 		return -EINVAL;
-	};
+	}
 
 	return 0;
 }
@@ -987,7 +988,6 @@ static int apds9960_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
 	struct apds9960_data *data;
-	struct iio_buffer *buffer;
 	struct iio_dev *indio_dev;
 	int ret;
 
@@ -995,20 +995,17 @@ static int apds9960_probe(struct i2c_client *client,
 	if (!indio_dev)
 		return -ENOMEM;
 
-	buffer = devm_iio_kfifo_allocate(&client->dev);
-	if (!buffer)
-		return -ENOMEM;
-
-	iio_device_attach_buffer(indio_dev, buffer);
-
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &apds9960_info;
 	indio_dev->name = APDS9960_DRV_NAME;
 	indio_dev->channels = apds9960_channels;
 	indio_dev->num_channels = ARRAY_SIZE(apds9960_channels);
 	indio_dev->available_scan_masks = apds9960_scan_masks;
-	indio_dev->modes = (INDIO_BUFFER_SOFTWARE | INDIO_DIRECT_MODE);
-	indio_dev->setup_ops = &apds9960_buffer_setup_ops;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = devm_iio_kfifo_buffer_setup(&client->dev, indio_dev,
+					  &apds9960_buffer_setup_ops);
+	if (ret)
+		return ret;
 
 	data = iio_priv(indio_dev);
 	i2c_set_clientdata(client, indio_dev);
@@ -1070,7 +1067,7 @@ error_power_down:
 	return ret;
 }
 
-static int apds9960_remove(struct i2c_client *client)
+static void apds9960_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct apds9960_data *data = iio_priv(indio_dev);
@@ -1079,8 +1076,6 @@ static int apds9960_remove(struct i2c_client *client)
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
 	apds9960_set_powermode(data, 0);
-
-	return 0;
 }
 
 #ifdef CONFIG_PM
@@ -1114,6 +1109,12 @@ static const struct i2c_device_id apds9960_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, apds9960_id);
 
+static const struct acpi_device_id apds9960_acpi_match[] = {
+	{ "MSHW0184" },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, apds9960_acpi_match);
+
 static const struct of_device_id apds9960_of_match[] = {
 	{ .compatible = "avago,apds9960" },
 	{ }
@@ -1125,6 +1126,7 @@ static struct i2c_driver apds9960_driver = {
 		.name	= APDS9960_DRV_NAME,
 		.of_match_table = apds9960_of_match,
 		.pm	= &apds9960_pm_ops,
+		.acpi_match_table = apds9960_acpi_match,
 	},
 	.probe		= apds9960_probe,
 	.remove		= apds9960_remove,
diff --git a/drivers/iio/light/as73211.c b/drivers/iio/light/as73211.c
new file mode 100644
index 000000000000..2307fc531752
--- /dev/null
+++ b/drivers/iio/light/as73211.c
@@ -0,0 +1,800 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Support for AMS AS73211 JENCOLOR(R) Digital XYZ Sensor
+ *
+ * Author: Christian Eggers <ceggers@arri.de>
+ *
+ * Copyright (c) 2020 ARRI Lighting
+ *
+ * Color light sensor with 16-bit channels for x, y, z and temperature);
+ * 7-bit I2C slave address 0x74 .. 0x77.
+ *
+ * Datasheet: https://ams.com/documents/20143/36005/AS73211_DS000556_3-01.pdf
+ */
+
+#include <linux/bitfield.h>
+#include <linux/completion.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/units.h>
+
+#define AS73211_DRV_NAME "as73211"
+
+/* AS73211 configuration registers */
+#define AS73211_REG_OSR    0x0
+#define AS73211_REG_AGEN   0x2
+#define AS73211_REG_CREG1  0x6
+#define AS73211_REG_CREG2  0x7
+#define AS73211_REG_CREG3  0x8
+
+/* AS73211 output register bank */
+#define AS73211_OUT_OSR_STATUS    0
+#define AS73211_OUT_TEMP          1
+#define AS73211_OUT_MRES1         2
+#define AS73211_OUT_MRES2         3
+#define AS73211_OUT_MRES3         4
+
+#define AS73211_OSR_SS            BIT(7)
+#define AS73211_OSR_PD            BIT(6)
+#define AS73211_OSR_SW_RES        BIT(3)
+#define AS73211_OSR_DOS_MASK      GENMASK(2, 0)
+#define AS73211_OSR_DOS_CONFIG    FIELD_PREP(AS73211_OSR_DOS_MASK, 0x2)
+#define AS73211_OSR_DOS_MEASURE   FIELD_PREP(AS73211_OSR_DOS_MASK, 0x3)
+
+#define AS73211_AGEN_DEVID_MASK   GENMASK(7, 4)
+#define AS73211_AGEN_DEVID(x)     FIELD_PREP(AS73211_AGEN_DEVID_MASK, (x))
+#define AS73211_AGEN_MUT_MASK     GENMASK(3, 0)
+#define AS73211_AGEN_MUT(x)       FIELD_PREP(AS73211_AGEN_MUT_MASK, (x))
+
+#define AS73211_CREG1_GAIN_MASK   GENMASK(7, 4)
+#define AS73211_CREG1_GAIN_1      11
+#define AS73211_CREG1_TIME_MASK   GENMASK(3, 0)
+
+#define AS73211_CREG3_CCLK_MASK   GENMASK(1, 0)
+
+#define AS73211_OSR_STATUS_OUTCONVOF  BIT(15)
+#define AS73211_OSR_STATUS_MRESOF     BIT(14)
+#define AS73211_OSR_STATUS_ADCOF      BIT(13)
+#define AS73211_OSR_STATUS_LDATA      BIT(12)
+#define AS73211_OSR_STATUS_NDATA      BIT(11)
+#define AS73211_OSR_STATUS_NOTREADY   BIT(10)
+
+#define AS73211_SAMPLE_FREQ_BASE      1024000
+
+#define AS73211_SAMPLE_TIME_NUM       15
+#define AS73211_SAMPLE_TIME_MAX_MS    BIT(AS73211_SAMPLE_TIME_NUM - 1)
+
+/* Available sample frequencies are 1.024MHz multiplied by powers of two. */
+static const int as73211_samp_freq_avail[] = {
+	AS73211_SAMPLE_FREQ_BASE * 1,
+	AS73211_SAMPLE_FREQ_BASE * 2,
+	AS73211_SAMPLE_FREQ_BASE * 4,
+	AS73211_SAMPLE_FREQ_BASE * 8,
+};
+
+static const int as73211_hardwaregain_avail[] = {
+	1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024, 2048,
+};
+
+/**
+ * struct as73211_data - Instance data for one AS73211
+ * @client: I2C client.
+ * @osr:    Cached Operational State Register.
+ * @creg1:  Cached Configuration Register 1.
+ * @creg2:  Cached Configuration Register 2.
+ * @creg3:  Cached Configuration Register 3.
+ * @mutex:  Keeps cached registers in sync with the device.
+ * @completion: Completion to wait for interrupt.
+ * @int_time_avail: Available integration times (depend on sampling frequency).
+ */
+struct as73211_data {
+	struct i2c_client *client;
+	u8 osr;
+	u8 creg1;
+	u8 creg2;
+	u8 creg3;
+	struct mutex mutex;
+	struct completion completion;
+	int int_time_avail[AS73211_SAMPLE_TIME_NUM * 2];
+};
+
+#define AS73211_COLOR_CHANNEL(_color, _si, _addr) { \
+	.type = IIO_INTENSITY, \
+	.modified = 1, \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), \
+	.info_mask_shared_by_type = \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+		BIT(IIO_CHAN_INFO_HARDWAREGAIN) | \
+		BIT(IIO_CHAN_INFO_INT_TIME), \
+	.info_mask_shared_by_type_available = \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ) | \
+		BIT(IIO_CHAN_INFO_HARDWAREGAIN) | \
+		BIT(IIO_CHAN_INFO_INT_TIME), \
+	.channel2 = IIO_MOD_##_color, \
+	.address = _addr, \
+	.scan_index = _si, \
+	.scan_type = { \
+		.sign = 'u', \
+		.realbits = 16, \
+		.storagebits = 16, \
+		.endianness = IIO_LE, \
+	}, \
+}
+
+#define AS73211_OFFSET_TEMP_INT    (-66)
+#define AS73211_OFFSET_TEMP_MICRO  900000
+#define AS73211_SCALE_TEMP_INT     0
+#define AS73211_SCALE_TEMP_MICRO   50000
+
+#define AS73211_SCALE_X 277071108  /* nW/m^2 */
+#define AS73211_SCALE_Y 298384270  /* nW/m^2 */
+#define AS73211_SCALE_Z 160241927  /* nW/m^2 */
+
+/* Channel order MUST match devices result register order */
+#define AS73211_SCAN_INDEX_TEMP 0
+#define AS73211_SCAN_INDEX_X    1
+#define AS73211_SCAN_INDEX_Y    2
+#define AS73211_SCAN_INDEX_Z    3
+#define AS73211_SCAN_INDEX_TS   4
+
+#define AS73211_SCAN_MASK_COLOR ( \
+	BIT(AS73211_SCAN_INDEX_X) |   \
+	BIT(AS73211_SCAN_INDEX_Y) |   \
+	BIT(AS73211_SCAN_INDEX_Z))
+
+#define AS73211_SCAN_MASK_ALL (    \
+	BIT(AS73211_SCAN_INDEX_TEMP) | \
+	AS73211_SCAN_MASK_COLOR)
+
+static const struct iio_chan_spec as73211_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_OFFSET) |
+			BIT(IIO_CHAN_INFO_SCALE),
+		.address = AS73211_OUT_TEMP,
+		.scan_index = AS73211_SCAN_INDEX_TEMP,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_LE,
+		}
+	},
+	AS73211_COLOR_CHANNEL(X, AS73211_SCAN_INDEX_X, AS73211_OUT_MRES1),
+	AS73211_COLOR_CHANNEL(Y, AS73211_SCAN_INDEX_Y, AS73211_OUT_MRES2),
+	AS73211_COLOR_CHANNEL(Z, AS73211_SCAN_INDEX_Z, AS73211_OUT_MRES3),
+	IIO_CHAN_SOFT_TIMESTAMP(AS73211_SCAN_INDEX_TS),
+};
+
+static unsigned int as73211_integration_time_1024cyc(struct as73211_data *data)
+{
+	/*
+	 * Return integration time in units of 1024 clock cycles. Integration time
+	 * in CREG1 is in powers of 2 (x 1024 cycles).
+	 */
+	return BIT(FIELD_GET(AS73211_CREG1_TIME_MASK, data->creg1));
+}
+
+static unsigned int as73211_integration_time_us(struct as73211_data *data,
+						 unsigned int integration_time_1024cyc)
+{
+	/*
+	 * f_samp is configured in CREG3 in powers of 2 (x 1.024 MHz)
+	 * t_cycl is configured in CREG1 in powers of 2 (x 1024 cycles)
+	 * t_int_us = 1 / (f_samp) * t_cycl * US_PER_SEC
+	 *          = 1 / (2^CREG3_CCLK * 1,024,000) * 2^CREG1_CYCLES * 1,024 * US_PER_SEC
+	 *          = 2^(-CREG3_CCLK) * 2^CREG1_CYCLES * 1,000
+	 * In order to get rid of negative exponents, we extend the "fraction"
+	 * by 2^3 (CREG3_CCLK,max = 3)
+	 * t_int_us = 2^(3-CREG3_CCLK) * 2^CREG1_CYCLES * 125
+	 */
+	return BIT(3 - FIELD_GET(AS73211_CREG3_CCLK_MASK, data->creg3)) *
+		integration_time_1024cyc * 125;
+}
+
+static void as73211_integration_time_calc_avail(struct as73211_data *data)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(data->int_time_avail) / 2; i++) {
+		unsigned int time_us = as73211_integration_time_us(data, BIT(i));
+
+		data->int_time_avail[i * 2 + 0] = time_us / USEC_PER_SEC;
+		data->int_time_avail[i * 2 + 1] = time_us % USEC_PER_SEC;
+	}
+}
+
+static unsigned int as73211_gain(struct as73211_data *data)
+{
+	/* gain can be calculated from CREG1 as 2^(11 - CREG1_GAIN) */
+	return BIT(AS73211_CREG1_GAIN_1 - FIELD_GET(AS73211_CREG1_GAIN_MASK, data->creg1));
+}
+
+/* must be called with as73211_data::mutex held. */
+static int as73211_req_data(struct as73211_data *data)
+{
+	unsigned int time_us = as73211_integration_time_us(data,
+							    as73211_integration_time_1024cyc(data));
+	struct device *dev = &data->client->dev;
+	union i2c_smbus_data smbus_data;
+	u16 osr_status;
+	int ret;
+
+	if (data->client->irq)
+		reinit_completion(&data->completion);
+
+	/*
+	 * During measurement, there should be no traffic on the i2c bus as the
+	 * electrical noise would disturb the measurement process.
+	 */
+	i2c_lock_bus(data->client->adapter, I2C_LOCK_SEGMENT);
+
+	data->osr &= ~AS73211_OSR_DOS_MASK;
+	data->osr |= AS73211_OSR_DOS_MEASURE | AS73211_OSR_SS;
+
+	smbus_data.byte = data->osr;
+	ret = __i2c_smbus_xfer(data->client->adapter, data->client->addr,
+			data->client->flags, I2C_SMBUS_WRITE,
+			AS73211_REG_OSR, I2C_SMBUS_BYTE_DATA, &smbus_data);
+	if (ret < 0) {
+		i2c_unlock_bus(data->client->adapter, I2C_LOCK_SEGMENT);
+		return ret;
+	}
+
+	/*
+	 * Reset AS73211_OSR_SS (is self clearing) in order to avoid unintentional
+	 * triggering of further measurements later.
+	 */
+	data->osr &= ~AS73211_OSR_SS;
+
+	/*
+	 * Add 33% extra margin for the timeout. fclk,min = fclk,typ - 27%.
+	 */
+	time_us += time_us / 3;
+	if (data->client->irq) {
+		ret = wait_for_completion_timeout(&data->completion, usecs_to_jiffies(time_us));
+		if (!ret) {
+			dev_err(dev, "timeout waiting for READY IRQ\n");
+			i2c_unlock_bus(data->client->adapter, I2C_LOCK_SEGMENT);
+			return -ETIMEDOUT;
+		}
+	} else {
+		/* Wait integration time */
+		usleep_range(time_us, 2 * time_us);
+	}
+
+	i2c_unlock_bus(data->client->adapter, I2C_LOCK_SEGMENT);
+
+	ret = i2c_smbus_read_word_data(data->client, AS73211_OUT_OSR_STATUS);
+	if (ret < 0)
+		return ret;
+
+	osr_status = ret;
+	if (osr_status != (AS73211_OSR_DOS_MEASURE | AS73211_OSR_STATUS_NDATA)) {
+		if (osr_status & AS73211_OSR_SS) {
+			dev_err(dev, "%s() Measurement has not stopped\n", __func__);
+			return -ETIME;
+		}
+		if (osr_status & AS73211_OSR_STATUS_NOTREADY) {
+			dev_err(dev, "%s() Data is not ready\n", __func__);
+			return -ENODATA;
+		}
+		if (!(osr_status & AS73211_OSR_STATUS_NDATA)) {
+			dev_err(dev, "%s() No new data available\n", __func__);
+			return -ENODATA;
+		}
+		if (osr_status & AS73211_OSR_STATUS_LDATA) {
+			dev_err(dev, "%s() Result buffer overrun\n", __func__);
+			return -ENOBUFS;
+		}
+		if (osr_status & AS73211_OSR_STATUS_ADCOF) {
+			dev_err(dev, "%s() ADC overflow\n", __func__);
+			return -EOVERFLOW;
+		}
+		if (osr_status & AS73211_OSR_STATUS_MRESOF) {
+			dev_err(dev, "%s() Measurement result overflow\n", __func__);
+			return -EOVERFLOW;
+		}
+		if (osr_status & AS73211_OSR_STATUS_OUTCONVOF) {
+			dev_err(dev, "%s() Timer overflow\n", __func__);
+			return -EOVERFLOW;
+		}
+		dev_err(dev, "%s() Unexpected status value\n", __func__);
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int as73211_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct as73211_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW: {
+		int ret;
+
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret < 0)
+			return ret;
+
+		ret = as73211_req_data(data);
+		if (ret < 0) {
+			iio_device_release_direct_mode(indio_dev);
+			return ret;
+		}
+
+		ret = i2c_smbus_read_word_data(data->client, chan->address);
+		iio_device_release_direct_mode(indio_dev);
+		if (ret < 0)
+			return ret;
+
+		*val = ret;
+		return IIO_VAL_INT;
+	}
+	case IIO_CHAN_INFO_OFFSET:
+		*val = AS73211_OFFSET_TEMP_INT;
+		*val2 = AS73211_OFFSET_TEMP_MICRO;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_TEMP:
+			*val = AS73211_SCALE_TEMP_INT;
+			*val2 = AS73211_SCALE_TEMP_MICRO;
+			return IIO_VAL_INT_PLUS_MICRO;
+
+		case IIO_INTENSITY: {
+			unsigned int scale;
+
+			switch (chan->channel2) {
+			case IIO_MOD_X:
+				scale = AS73211_SCALE_X;
+				break;
+			case IIO_MOD_Y:
+				scale = AS73211_SCALE_Y;
+				break;
+			case IIO_MOD_Z:
+				scale = AS73211_SCALE_Z;
+				break;
+			default:
+				return -EINVAL;
+			}
+			scale /= as73211_gain(data);
+			scale /= as73211_integration_time_1024cyc(data);
+			*val = scale;
+			return IIO_VAL_INT;
+
+		default:
+			return -EINVAL;
+		}}
+
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		/* f_samp is configured in CREG3 in powers of 2 (x 1.024 MHz) */
+		*val = BIT(FIELD_GET(AS73211_CREG3_CCLK_MASK, data->creg3)) *
+			AS73211_SAMPLE_FREQ_BASE;
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		*val = as73211_gain(data);
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_INT_TIME: {
+		unsigned int time_us;
+
+		mutex_lock(&data->mutex);
+		time_us = as73211_integration_time_us(data, as73211_integration_time_1024cyc(data));
+		mutex_unlock(&data->mutex);
+		*val = time_us / USEC_PER_SEC;
+		*val2 = time_us % USEC_PER_SEC;
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	default:
+		return -EINVAL;
+	}}
+}
+
+static int as73211_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length, long mask)
+{
+	struct as73211_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*length = ARRAY_SIZE(as73211_samp_freq_avail);
+		*vals = as73211_samp_freq_avail;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		*length = ARRAY_SIZE(as73211_hardwaregain_avail);
+		*vals = as73211_hardwaregain_avail;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+
+	case IIO_CHAN_INFO_INT_TIME:
+		*length = ARRAY_SIZE(data->int_time_avail);
+		*vals = data->int_time_avail;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int _as73211_write_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan __always_unused,
+			       int val, int val2, long mask)
+{
+	struct as73211_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ: {
+		int reg_bits, freq_kHz = val / HZ_PER_KHZ;  /* 1024, 2048, ... */
+
+		/* val must be 1024 * 2^x */
+		if (val < 0 || (freq_kHz * HZ_PER_KHZ) != val ||
+				!is_power_of_2(freq_kHz) || val2)
+			return -EINVAL;
+
+		/* f_samp is configured in CREG3 in powers of 2 (x 1.024 MHz (=2^10)) */
+		reg_bits = ilog2(freq_kHz) - 10;
+		if (!FIELD_FIT(AS73211_CREG3_CCLK_MASK, reg_bits))
+			return -EINVAL;
+
+		data->creg3 &= ~AS73211_CREG3_CCLK_MASK;
+		data->creg3 |= FIELD_PREP(AS73211_CREG3_CCLK_MASK, reg_bits);
+		as73211_integration_time_calc_avail(data);
+
+		ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_CREG3, data->creg3);
+		if (ret < 0)
+			return ret;
+
+		return 0;
+	}
+	case IIO_CHAN_INFO_HARDWAREGAIN: {
+		unsigned int reg_bits;
+
+		if (val < 0 || !is_power_of_2(val) || val2)
+			return -EINVAL;
+
+		/* gain can be calculated from CREG1 as 2^(11 - CREG1_GAIN) */
+		reg_bits = AS73211_CREG1_GAIN_1 - ilog2(val);
+		if (!FIELD_FIT(AS73211_CREG1_GAIN_MASK, reg_bits))
+			return -EINVAL;
+
+		data->creg1 &= ~AS73211_CREG1_GAIN_MASK;
+		data->creg1 |= FIELD_PREP(AS73211_CREG1_GAIN_MASK, reg_bits);
+
+		ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_CREG1, data->creg1);
+		if (ret < 0)
+			return ret;
+
+		return 0;
+	}
+	case IIO_CHAN_INFO_INT_TIME: {
+		int val_us = val * USEC_PER_SEC + val2;
+		int time_ms;
+		int reg_bits;
+
+		/* f_samp is configured in CREG3 in powers of 2 (x 1.024 MHz) */
+		int f_samp_1_024mhz = BIT(FIELD_GET(AS73211_CREG3_CCLK_MASK, data->creg3));
+
+		/*
+		 * time_ms = time_us * US_PER_MS * f_samp_1_024mhz / MHZ_PER_HZ
+		 *         = time_us * f_samp_1_024mhz / 1000
+		 */
+		time_ms = (val_us * f_samp_1_024mhz) / 1000;  /* 1 ms, 2 ms, ... (power of two) */
+		if (time_ms < 0 || !is_power_of_2(time_ms) || time_ms > AS73211_SAMPLE_TIME_MAX_MS)
+			return -EINVAL;
+
+		reg_bits = ilog2(time_ms);
+		if (!FIELD_FIT(AS73211_CREG1_TIME_MASK, reg_bits))
+			return -EINVAL;  /* not possible due to previous tests */
+
+		data->creg1 &= ~AS73211_CREG1_TIME_MASK;
+		data->creg1 |= FIELD_PREP(AS73211_CREG1_TIME_MASK, reg_bits);
+
+		ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_CREG1, data->creg1);
+		if (ret < 0)
+			return ret;
+
+		return 0;
+
+	default:
+		return -EINVAL;
+	}}
+}
+
+static int as73211_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	struct as73211_data *data = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&data->mutex);
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret < 0)
+		goto error_unlock;
+
+	/* Need to switch to config mode ... */
+	if ((data->osr & AS73211_OSR_DOS_MASK) != AS73211_OSR_DOS_CONFIG) {
+		data->osr &= ~AS73211_OSR_DOS_MASK;
+		data->osr |= AS73211_OSR_DOS_CONFIG;
+
+		ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_OSR, data->osr);
+		if (ret < 0)
+			goto error_release;
+	}
+
+	ret = _as73211_write_raw(indio_dev, chan, val, val2, mask);
+
+error_release:
+	iio_device_release_direct_mode(indio_dev);
+error_unlock:
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+
+static irqreturn_t as73211_ready_handler(int irq __always_unused, void *priv)
+{
+	struct as73211_data *data = iio_priv(priv);
+
+	complete(&data->completion);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t as73211_trigger_handler(int irq __always_unused, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct as73211_data *data = iio_priv(indio_dev);
+	struct {
+		__le16 chan[4];
+		s64 ts __aligned(8);
+	} scan;
+	int data_result, ret;
+
+	mutex_lock(&data->mutex);
+
+	data_result = as73211_req_data(data);
+	if (data_result < 0 && data_result != -EOVERFLOW)
+		goto done;  /* don't push any data for errors other than EOVERFLOW */
+
+	if (*indio_dev->active_scan_mask == AS73211_SCAN_MASK_ALL) {
+		/* Optimization for reading all (color + temperature) channels */
+		u8 addr = as73211_channels[0].address;
+		struct i2c_msg msgs[] = {
+			{
+				.addr = data->client->addr,
+				.flags = 0,
+				.len = 1,
+				.buf = &addr,
+			},
+			{
+				.addr = data->client->addr,
+				.flags = I2C_M_RD,
+				.len = sizeof(scan.chan),
+				.buf = (u8 *)&scan.chan,
+			},
+		};
+
+		ret = i2c_transfer(data->client->adapter, msgs, ARRAY_SIZE(msgs));
+		if (ret < 0)
+			goto done;
+	} else {
+		/* Optimization for reading only color channels */
+
+		/* AS73211 starts reading at address 2 */
+		ret = i2c_master_recv(data->client,
+				(char *)&scan.chan[1], 3 * sizeof(scan.chan[1]));
+		if (ret < 0)
+			goto done;
+	}
+
+	if (data_result) {
+		/*
+		 * Saturate all channels (in case of overflows). Temperature channel
+		 * is not affected by overflows.
+		 */
+		scan.chan[1] = cpu_to_le16(U16_MAX);
+		scan.chan[2] = cpu_to_le16(U16_MAX);
+		scan.chan[3] = cpu_to_le16(U16_MAX);
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan, iio_get_time_ns(indio_dev));
+
+done:
+	mutex_unlock(&data->mutex);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static const struct iio_info as73211_info = {
+	.read_raw = as73211_read_raw,
+	.read_avail = as73211_read_avail,
+	.write_raw = as73211_write_raw,
+};
+
+static int as73211_power(struct iio_dev *indio_dev, bool state)
+{
+	struct as73211_data *data = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&data->mutex);
+
+	if (state)
+		data->osr &= ~AS73211_OSR_PD;
+	else
+		data->osr |= AS73211_OSR_PD;
+
+	ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_OSR, data->osr);
+
+	mutex_unlock(&data->mutex);
+
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static void as73211_power_disable(void *data)
+{
+	struct iio_dev *indio_dev = data;
+
+	as73211_power(indio_dev, false);
+}
+
+static int as73211_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct as73211_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+
+	mutex_init(&data->mutex);
+	init_completion(&data->completion);
+
+	indio_dev->info = &as73211_info;
+	indio_dev->name = AS73211_DRV_NAME;
+	indio_dev->channels = as73211_channels;
+	indio_dev->num_channels = ARRAY_SIZE(as73211_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = i2c_smbus_read_byte_data(data->client, AS73211_REG_OSR);
+	if (ret < 0)
+		return ret;
+	data->osr = ret;
+
+	/* reset device */
+	data->osr |= AS73211_OSR_SW_RES;
+	ret = i2c_smbus_write_byte_data(data->client, AS73211_REG_OSR, data->osr);
+	if (ret < 0)
+		return ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, AS73211_REG_OSR);
+	if (ret < 0)
+		return ret;
+	data->osr = ret;
+
+	/*
+	 * Reading AGEN is only possible after reset (AGEN is not available if
+	 * device is in measurement mode).
+	 */
+	ret = i2c_smbus_read_byte_data(data->client, AS73211_REG_AGEN);
+	if (ret < 0)
+		return ret;
+
+	/* At the time of writing this driver, only DEVID 2 and MUT 1 are known. */
+	if ((ret & AS73211_AGEN_DEVID_MASK) != AS73211_AGEN_DEVID(2) ||
+	    (ret & AS73211_AGEN_MUT_MASK) != AS73211_AGEN_MUT(1))
+		return -ENODEV;
+
+	ret = i2c_smbus_read_byte_data(data->client, AS73211_REG_CREG1);
+	if (ret < 0)
+		return ret;
+	data->creg1 = ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, AS73211_REG_CREG2);
+	if (ret < 0)
+		return ret;
+	data->creg2 = ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, AS73211_REG_CREG3);
+	if (ret < 0)
+		return ret;
+	data->creg3 = ret;
+	as73211_integration_time_calc_avail(data);
+
+	ret = as73211_power(indio_dev, true);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_add_action_or_reset(dev, as73211_power_disable, indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL, as73211_trigger_handler, NULL);
+	if (ret)
+		return ret;
+
+	if (client->irq) {
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+				NULL,
+				as73211_ready_handler,
+				IRQF_ONESHOT,
+				client->name, indio_dev);
+		if (ret)
+			return ret;
+	}
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static int as73211_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+
+	return as73211_power(indio_dev, false);
+}
+
+static int as73211_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+
+	return as73211_power(indio_dev, true);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(as73211_pm_ops, as73211_suspend,
+				as73211_resume);
+
+static const struct of_device_id as73211_of_match[] = {
+	{ .compatible = "ams,as73211" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, as73211_of_match);
+
+static const struct i2c_device_id as73211_id[] = {
+	{ "as73211", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, as73211_id);
+
+static struct i2c_driver as73211_driver = {
+	.driver = {
+		.name           = AS73211_DRV_NAME,
+		.of_match_table = as73211_of_match,
+		.pm             = pm_sleep_ptr(&as73211_pm_ops),
+	},
+	.probe_new  = as73211_probe,
+	.id_table   = as73211_id,
+};
+module_i2c_driver(as73211_driver);
+
+MODULE_AUTHOR("Christian Eggers <ceggers@arri.de>");
+MODULE_DESCRIPTION("AS73211 XYZ True Color Sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/light/bh1750.c b/drivers/iio/light/bh1750.c
index adb5ab9e3439..3e92820bc820 100644
--- a/drivers/iio/light/bh1750.c
+++ b/drivers/iio/light/bh1750.c
@@ -254,7 +254,6 @@ static int bh1750_probe(struct i2c_client *client,
 		return ret;
 
 	mutex_init(&data->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &bh1750_info;
 	indio_dev->name = id->name;
 	indio_dev->channels = bh1750_channels;
@@ -264,7 +263,7 @@ static int bh1750_probe(struct i2c_client *client,
 	return iio_device_register(indio_dev);
 }
 
-static int bh1750_remove(struct i2c_client *client)
+static void bh1750_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct bh1750_data *data = iio_priv(indio_dev);
@@ -274,11 +273,9 @@ static int bh1750_remove(struct i2c_client *client)
 	mutex_lock(&data->lock);
 	i2c_smbus_write_byte(client, BH1750_POWER_DOWN);
 	mutex_unlock(&data->lock);
-
-	return 0;
 }
 
-static int __maybe_unused bh1750_suspend(struct device *dev)
+static int bh1750_suspend(struct device *dev)
 {
 	int ret;
 	struct bh1750_data *data =
@@ -295,7 +292,7 @@ static int __maybe_unused bh1750_suspend(struct device *dev)
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(bh1750_pm_ops, bh1750_suspend, NULL);
+static DEFINE_SIMPLE_DEV_PM_OPS(bh1750_pm_ops, bh1750_suspend, NULL);
 
 static const struct i2c_device_id bh1750_id[] = {
 	{ "bh1710", BH1710 },
@@ -321,7 +318,7 @@ static struct i2c_driver bh1750_driver = {
 	.driver = {
 		.name = "bh1750",
 		.of_match_table = bh1750_of_match,
-		.pm = &bh1750_pm_ops,
+		.pm = pm_sleep_ptr(&bh1750_pm_ops),
 	},
 	.probe = bh1750_probe,
 	.remove = bh1750_remove,
diff --git a/drivers/iio/light/bh1780.c b/drivers/iio/light/bh1780.c
index a8361006dcd9..90bca392b262 100644
--- a/drivers/iio/light/bh1780.c
+++ b/drivers/iio/light/bh1780.c
@@ -13,7 +13,7 @@
 #include <linux/platform_device.h>
 #include <linux/delay.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/pm_runtime.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -185,7 +185,6 @@ static int bh1780_probe(struct i2c_client *client,
 	pm_runtime_use_autosuspend(&client->dev);
 	pm_runtime_put(&client->dev);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &bh1780_info;
 	indio_dev->name = "bh1780";
 	indio_dev->channels = bh1780_channels;
@@ -203,7 +202,7 @@ out_disable_pm:
 	return ret;
 }
 
-static int bh1780_remove(struct i2c_client *client)
+static void bh1780_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct bh1780_data *bh1780 = iio_priv(indio_dev);
@@ -214,15 +213,11 @@ static int bh1780_remove(struct i2c_client *client)
 	pm_runtime_put_noidle(&client->dev);
 	pm_runtime_disable(&client->dev);
 	ret = bh1780_write(bh1780, BH1780_REG_CONTROL, BH1780_POFF);
-	if (ret < 0) {
-		dev_err(&client->dev, "failed to power off\n");
-		return ret;
-	}
-
-	return 0;
+	if (ret < 0)
+		dev_err(&client->dev, "failed to power off (%pe)\n",
+			ERR_PTR(ret));
 }
 
-#ifdef CONFIG_PM
 static int bh1780_runtime_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -257,14 +252,9 @@ static int bh1780_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM */
 
-static const struct dev_pm_ops bh1780_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(bh1780_runtime_suspend,
-			   bh1780_runtime_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(bh1780_dev_pm_ops, bh1780_runtime_suspend,
+				bh1780_runtime_resume, NULL);
 
 static const struct i2c_device_id bh1780_id[] = {
 	{ "bh1780", 0 },
@@ -273,13 +263,11 @@ static const struct i2c_device_id bh1780_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, bh1780_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id of_bh1780_match[] = {
 	{ .compatible = "rohm,bh1780gli", },
 	{},
 };
 MODULE_DEVICE_TABLE(of, of_bh1780_match);
-#endif
 
 static struct i2c_driver bh1780_driver = {
 	.probe		= bh1780_probe,
@@ -287,8 +275,8 @@ static struct i2c_driver bh1780_driver = {
 	.id_table	= bh1780_id,
 	.driver = {
 		.name = "bh1780",
-		.pm = &bh1780_dev_pm_ops,
-		.of_match_table = of_match_ptr(of_bh1780_match),
+		.pm = pm_ptr(&bh1780_dev_pm_ops),
+		.of_match_table = of_bh1780_match,
 	},
 };
 
diff --git a/drivers/iio/light/cm32181.c b/drivers/iio/light/cm32181.c
index 5f4fb5674fa0..001055d09750 100644
--- a/drivers/iio/light/cm32181.c
+++ b/drivers/iio/light/cm32181.c
@@ -4,11 +4,13 @@
  * Author: Kevin Tsai <ktsai@capellamicro.com>
  */
 
+#include <linux/acpi.h>
 #include <linux/delay.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/interrupt.h>
 #include <linux/regulator/consumer.h>
 #include <linux/iio/iio.h>
@@ -18,17 +20,24 @@
 
 /* Registers Address */
 #define CM32181_REG_ADDR_CMD		0x00
+#define CM32181_REG_ADDR_WH		0x01
+#define CM32181_REG_ADDR_WL		0x02
+#define CM32181_REG_ADDR_TEST		0x03
 #define CM32181_REG_ADDR_ALS		0x04
 #define CM32181_REG_ADDR_STATUS		0x06
 #define CM32181_REG_ADDR_ID		0x07
 
 /* Number of Configurable Registers */
-#define CM32181_CONF_REG_NUM		0x01
+#define CM32181_CONF_REG_NUM		4
 
 /* CMD register */
-#define CM32181_CMD_ALS_ENABLE		0x00
-#define CM32181_CMD_ALS_DISABLE		0x01
-#define CM32181_CMD_ALS_INT_EN		0x02
+#define CM32181_CMD_ALS_DISABLE		BIT(0)
+#define CM32181_CMD_ALS_INT_EN		BIT(1)
+#define CM32181_CMD_ALS_THRES_WINDOW	BIT(2)
+
+#define CM32181_CMD_ALS_PERS_SHIFT	4
+#define CM32181_CMD_ALS_PERS_MASK	(0x03 << CM32181_CMD_ALS_PERS_SHIFT)
+#define CM32181_CMD_ALS_PERS_DEFAULT	(0x01 << CM32181_CMD_ALS_PERS_SHIFT)
 
 #define CM32181_CMD_ALS_IT_SHIFT	6
 #define CM32181_CMD_ALS_IT_MASK		(0x0F << CM32181_CMD_ALS_IT_SHIFT)
@@ -38,27 +47,133 @@
 #define CM32181_CMD_ALS_SM_MASK		(0x03 << CM32181_CMD_ALS_SM_SHIFT)
 #define CM32181_CMD_ALS_SM_DEFAULT	(0x01 << CM32181_CMD_ALS_SM_SHIFT)
 
-#define CM32181_MLUX_PER_BIT		5	/* ALS_SM=01 IT=800ms */
-#define CM32181_MLUX_PER_BIT_BASE_IT	800000	/* Based on IT=800ms */
-#define	CM32181_CALIBSCALE_DEFAULT	1000
-#define CM32181_CALIBSCALE_RESOLUTION	1000
-#define MLUX_PER_LUX			1000
+#define CM32181_LUX_PER_BIT		500	/* ALS_SM=01 IT=800ms */
+#define CM32181_LUX_PER_BIT_RESOLUTION	100000
+#define CM32181_LUX_PER_BIT_BASE_IT	800000	/* Based on IT=800ms */
+#define CM32181_CALIBSCALE_DEFAULT	100000
+#define CM32181_CALIBSCALE_RESOLUTION	100000
 
-static const u8 cm32181_reg[CM32181_CONF_REG_NUM] = {
-	CM32181_REG_ADDR_CMD,
-};
+#define SMBUS_ALERT_RESPONSE_ADDRESS	0x0c
+
+/* CPM0 Index 0: device-id (3218 or 32181), 1: Unknown, 2: init_regs_bitmap */
+#define CPM0_REGS_BITMAP		2
+#define CPM0_HEADER_SIZE		3
+
+/* CPM1 Index 0: lux_per_bit, 1: calibscale, 2: resolution (100000) */
+#define CPM1_LUX_PER_BIT		0
+#define CPM1_CALIBSCALE			1
+#define CPM1_SIZE			3
 
-static const int als_it_bits[] = {12, 8, 0, 1, 2, 3};
-static const int als_it_value[] = {25000, 50000, 100000, 200000, 400000,
-	800000};
+/* CM3218 Family */
+static const int cm3218_als_it_bits[] = { 0, 1, 2, 3 };
+static const int cm3218_als_it_values[] = { 100000, 200000, 400000, 800000 };
+
+/* CM32181 Family */
+static const int cm32181_als_it_bits[] = { 12, 8, 0, 1, 2, 3 };
+static const int cm32181_als_it_values[] = {
+	25000, 50000, 100000, 200000, 400000, 800000
+};
 
 struct cm32181_chip {
 	struct i2c_client *client;
+	struct device *dev;
 	struct mutex lock;
 	u16 conf_regs[CM32181_CONF_REG_NUM];
+	unsigned long init_regs_bitmap;
 	int calibscale;
+	int lux_per_bit;
+	int lux_per_bit_base_it;
+	int num_als_it;
+	const int *als_it_bits;
+	const int *als_it_values;
 };
 
+static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val2);
+
+#ifdef CONFIG_ACPI
+/**
+ * cm32181_acpi_get_cpm() - Get CPM object from ACPI
+ * @dev:	pointer of struct device.
+ * @obj_name:	pointer of ACPI object name.
+ * @values:	pointer of array for return elements.
+ * @count:	maximum size of return array.
+ *
+ * Convert ACPI CPM table to array.
+ *
+ * Return: -ENODEV for fail.  Otherwise is number of elements.
+ */
+static int cm32181_acpi_get_cpm(struct device *dev, char *obj_name,
+				u64 *values, int count)
+{
+	struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
+	union acpi_object *cpm, *elem;
+	acpi_handle handle;
+	acpi_status status;
+	int i;
+
+	handle = ACPI_HANDLE(dev);
+	if (!handle)
+		return -ENODEV;
+
+	status = acpi_evaluate_object(handle, obj_name, NULL, &buffer);
+	if (ACPI_FAILURE(status)) {
+		dev_err(dev, "object %s not found\n", obj_name);
+		return -ENODEV;
+	}
+
+	cpm = buffer.pointer;
+	if (cpm->package.count > count)
+		dev_warn(dev, "%s table contains %u values, only using first %d values\n",
+			 obj_name, cpm->package.count, count);
+
+	count = min_t(int, cpm->package.count, count);
+	for (i = 0; i < count; i++) {
+		elem = &(cpm->package.elements[i]);
+		values[i] = elem->integer.value;
+	}
+
+	kfree(buffer.pointer);
+
+	return count;
+}
+
+static void cm32181_acpi_parse_cpm_tables(struct cm32181_chip *cm32181)
+{
+	u64 vals[CPM0_HEADER_SIZE + CM32181_CONF_REG_NUM];
+	struct device *dev = cm32181->dev;
+	int i, count;
+
+	count = cm32181_acpi_get_cpm(dev, "CPM0", vals, ARRAY_SIZE(vals));
+	if (count <= CPM0_HEADER_SIZE)
+		return;
+
+	count -= CPM0_HEADER_SIZE;
+
+	cm32181->init_regs_bitmap = vals[CPM0_REGS_BITMAP];
+	cm32181->init_regs_bitmap &= GENMASK(count - 1, 0);
+	for_each_set_bit(i, &cm32181->init_regs_bitmap, count)
+		cm32181->conf_regs[i] =	vals[CPM0_HEADER_SIZE + i];
+
+	count = cm32181_acpi_get_cpm(dev, "CPM1", vals, ARRAY_SIZE(vals));
+	if (count != CPM1_SIZE)
+		return;
+
+	cm32181->lux_per_bit = vals[CPM1_LUX_PER_BIT];
+
+	/* Check for uncalibrated devices */
+	if (vals[CPM1_CALIBSCALE] == CM32181_CALIBSCALE_DEFAULT)
+		return;
+
+	cm32181->calibscale = vals[CPM1_CALIBSCALE];
+	/* CPM1 lux_per_bit is for the current it value */
+	cm32181_read_als_it(cm32181, &cm32181->lux_per_bit_base_it);
+}
+#else
+static void cm32181_acpi_parse_cpm_tables(struct cm32181_chip *cm32181)
+{
+}
+#endif /* CONFIG_ACPI */
+
 /**
  * cm32181_reg_init() - Initialize CM32181 registers
  * @cm32181:	pointer of struct cm32181.
@@ -78,18 +193,37 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181)
 		return ret;
 
 	/* check device ID */
-	if ((ret & 0xFF) != 0x81)
+	switch (ret & 0xFF) {
+	case 0x18: /* CM3218 */
+		cm32181->num_als_it = ARRAY_SIZE(cm3218_als_it_bits);
+		cm32181->als_it_bits = cm3218_als_it_bits;
+		cm32181->als_it_values = cm3218_als_it_values;
+		break;
+	case 0x81: /* CM32181 */
+	case 0x82: /* CM32182, fully compat. with CM32181 */
+		cm32181->num_als_it = ARRAY_SIZE(cm32181_als_it_bits);
+		cm32181->als_it_bits = cm32181_als_it_bits;
+		cm32181->als_it_values = cm32181_als_it_values;
+		break;
+	default:
 		return -ENODEV;
+	}
 
 	/* Default Values */
-	cm32181->conf_regs[CM32181_REG_ADDR_CMD] = CM32181_CMD_ALS_ENABLE |
+	cm32181->conf_regs[CM32181_REG_ADDR_CMD] =
 			CM32181_CMD_ALS_IT_DEFAULT | CM32181_CMD_ALS_SM_DEFAULT;
+	cm32181->init_regs_bitmap = BIT(CM32181_REG_ADDR_CMD);
 	cm32181->calibscale = CM32181_CALIBSCALE_DEFAULT;
+	cm32181->lux_per_bit = CM32181_LUX_PER_BIT;
+	cm32181->lux_per_bit_base_it = CM32181_LUX_PER_BIT_BASE_IT;
+
+	if (ACPI_HANDLE(cm32181->dev))
+		cm32181_acpi_parse_cpm_tables(cm32181);
 
 	/* Initialize registers*/
-	for (i = 0; i < CM32181_CONF_REG_NUM; i++) {
-		ret = i2c_smbus_write_word_data(client, cm32181_reg[i],
-			cm32181->conf_regs[i]);
+	for_each_set_bit(i, &cm32181->init_regs_bitmap, CM32181_CONF_REG_NUM) {
+		ret = i2c_smbus_write_word_data(client, i,
+						cm32181->conf_regs[i]);
 		if (ret < 0)
 			return ret;
 	}
@@ -102,7 +236,7 @@ static int cm32181_reg_init(struct cm32181_chip *cm32181)
  *  @cm32181:	pointer of struct cm32181
  *  @val2:	pointer of int to load the als_it value.
  *
- *  Report the current integartion time by millisecond.
+ *  Report the current integration time in milliseconds.
  *
  *  Return: IIO_VAL_INT_PLUS_MICRO for success, otherwise -EINVAL.
  */
@@ -114,9 +248,9 @@ static int cm32181_read_als_it(struct cm32181_chip *cm32181, int *val2)
 	als_it = cm32181->conf_regs[CM32181_REG_ADDR_CMD];
 	als_it &= CM32181_CMD_ALS_IT_MASK;
 	als_it >>= CM32181_CMD_ALS_IT_SHIFT;
-	for (i = 0; i < ARRAY_SIZE(als_it_bits); i++) {
-		if (als_it == als_it_bits[i]) {
-			*val2 = als_it_value[i];
+	for (i = 0; i < cm32181->num_als_it; i++) {
+		if (als_it == cm32181->als_it_bits[i]) {
+			*val2 = cm32181->als_it_values[i];
 			return IIO_VAL_INT_PLUS_MICRO;
 		}
 	}
@@ -139,14 +273,14 @@ static int cm32181_write_als_it(struct cm32181_chip *cm32181, int val)
 	u16 als_it;
 	int ret, i, n;
 
-	n = ARRAY_SIZE(als_it_value);
+	n = cm32181->num_als_it;
 	for (i = 0; i < n; i++)
-		if (val <= als_it_value[i])
+		if (val <= cm32181->als_it_values[i])
 			break;
 	if (i >= n)
 		i = n - 1;
 
-	als_it = als_it_bits[i];
+	als_it = cm32181->als_it_bits[i];
 	als_it <<= CM32181_CMD_ALS_IT_SHIFT;
 
 	mutex_lock(&cm32181->lock);
@@ -175,15 +309,15 @@ static int cm32181_get_lux(struct cm32181_chip *cm32181)
 	struct i2c_client *client = cm32181->client;
 	int ret;
 	int als_it;
-	unsigned long lux;
+	u64 lux;
 
 	ret = cm32181_read_als_it(cm32181, &als_it);
 	if (ret < 0)
 		return -EINVAL;
 
-	lux = CM32181_MLUX_PER_BIT;
-	lux *= CM32181_MLUX_PER_BIT_BASE_IT;
-	lux /= als_it;
+	lux = cm32181->lux_per_bit;
+	lux *= cm32181->lux_per_bit_base_it;
+	lux = div_u64(lux, als_it);
 
 	ret = i2c_smbus_read_word_data(client, CM32181_REG_ADDR_ALS);
 	if (ret < 0)
@@ -191,8 +325,8 @@ static int cm32181_get_lux(struct cm32181_chip *cm32181)
 
 	lux *= ret;
 	lux *= cm32181->calibscale;
-	lux /= CM32181_CALIBSCALE_RESOLUTION;
-	lux /= MLUX_PER_LUX;
+	lux = div_u64(lux, CM32181_CALIBSCALE_RESOLUTION);
+	lux = div_u64(lux, CM32181_LUX_PER_BIT_RESOLUTION);
 
 	if (lux > 0xFFFF)
 		lux = 0xFFFF;
@@ -258,11 +392,12 @@ static int cm32181_write_raw(struct iio_dev *indio_dev,
 static ssize_t cm32181_get_it_available(struct device *dev,
 			struct device_attribute *attr, char *buf)
 {
+	struct cm32181_chip *cm32181 = iio_priv(dev_to_iio_dev(dev));
 	int i, n, len;
 
-	n = ARRAY_SIZE(als_it_value);
+	n = cm32181->num_als_it;
 	for (i = 0, len = 0; i < n; i++)
-		len += sprintf(buf + len, "0.%06u ", als_it_value[i]);
+		len += sprintf(buf + len, "0.%06u ", cm32181->als_it_values[i]);
 	return len + sprintf(buf + len, "\n");
 }
 
@@ -294,70 +429,107 @@ static const struct iio_info cm32181_info = {
 	.attrs			= &cm32181_attribute_group,
 };
 
-static int cm32181_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
+static int cm32181_probe(struct i2c_client *client)
 {
+	struct device *dev = &client->dev;
 	struct cm32181_chip *cm32181;
 	struct iio_dev *indio_dev;
 	int ret;
 
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm32181));
-	if (!indio_dev) {
-		dev_err(&client->dev, "devm_iio_device_alloc failed\n");
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*cm32181));
+	if (!indio_dev)
 		return -ENOMEM;
+
+	/*
+	 * Some ACPI systems list 2 I2C resources for the CM3218 sensor, the
+	 * SMBus Alert Response Address (ARA, 0x0c) and the actual I2C address.
+	 * Detect this and take the following step to deal with it:
+	 * 1. When a SMBus Alert capable sensor has an Alert asserted, it will
+	 *    not respond on its actual I2C address. Read a byte from the ARA
+	 *    to clear any pending Alerts.
+	 * 2. Create a "dummy" client for the actual I2C address and
+	 *    use that client to communicate with the sensor.
+	 */
+	if (ACPI_HANDLE(dev) && client->addr == SMBUS_ALERT_RESPONSE_ADDRESS) {
+		struct i2c_board_info board_info = { .type = "dummy" };
+
+		i2c_smbus_read_byte(client);
+
+		client = i2c_acpi_new_device(dev, 1, &board_info);
+		if (IS_ERR(client))
+			return PTR_ERR(client);
 	}
 
-	cm32181 = iio_priv(indio_dev);
 	i2c_set_clientdata(client, indio_dev);
+
+	cm32181 = iio_priv(indio_dev);
 	cm32181->client = client;
+	cm32181->dev = dev;
 
 	mutex_init(&cm32181->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = cm32181_channels;
 	indio_dev->num_channels = ARRAY_SIZE(cm32181_channels);
 	indio_dev->info = &cm32181_info;
-	indio_dev->name = id->name;
+	indio_dev->name = dev_name(dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	ret = cm32181_reg_init(cm32181);
 	if (ret) {
-		dev_err(&client->dev,
-			"%s: register init failed\n",
-			__func__);
+		dev_err(dev, "%s: register init failed\n", __func__);
 		return ret;
 	}
 
-	ret = devm_iio_device_register(&client->dev, indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret) {
-		dev_err(&client->dev,
-			"%s: regist device failed\n",
-			__func__);
+		dev_err(dev, "%s: regist device failed\n", __func__);
 		return ret;
 	}
 
 	return 0;
 }
 
-static const struct i2c_device_id cm32181_id[] = {
-	{ "cm32181", 0 },
-	{ }
-};
+static int cm32181_suspend(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+
+	return i2c_smbus_write_word_data(client, CM32181_REG_ADDR_CMD,
+					 CM32181_CMD_ALS_DISABLE);
+}
 
-MODULE_DEVICE_TABLE(i2c, cm32181_id);
+static int cm32181_resume(struct device *dev)
+{
+	struct i2c_client *client = to_i2c_client(dev);
+	struct cm32181_chip *cm32181 = iio_priv(dev_get_drvdata(dev));
+
+	return i2c_smbus_write_word_data(client, CM32181_REG_ADDR_CMD,
+					 cm32181->conf_regs[CM32181_REG_ADDR_CMD]);
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(cm32181_pm_ops, cm32181_suspend, cm32181_resume);
 
 static const struct of_device_id cm32181_of_match[] = {
+	{ .compatible = "capella,cm3218" },
 	{ .compatible = "capella,cm32181" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, cm32181_of_match);
 
+#ifdef CONFIG_ACPI
+static const struct acpi_device_id cm32181_acpi_match[] = {
+	{ "CPLM3218", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, cm32181_acpi_match);
+#endif
+
 static struct i2c_driver cm32181_driver = {
 	.driver = {
 		.name	= "cm32181",
-		.of_match_table = of_match_ptr(cm32181_of_match),
+		.acpi_match_table = ACPI_PTR(cm32181_acpi_match),
+		.of_match_table = cm32181_of_match,
+		.pm = pm_sleep_ptr(&cm32181_pm_ops),
 	},
-	.id_table       = cm32181_id,
-	.probe		= cm32181_probe,
+	.probe_new	= cm32181_probe,
 };
 
 module_i2c_driver(cm32181_driver);
diff --git a/drivers/iio/light/cm3232.c b/drivers/iio/light/cm3232.c
index cd3cfb7d02bd..5214cd014cf8 100644
--- a/drivers/iio/light/cm3232.c
+++ b/drivers/iio/light/cm3232.c
@@ -10,6 +10,7 @@
 
 #include <linux/i2c.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/init.h>
@@ -339,7 +340,6 @@ static int cm3232_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	chip->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = cm3232_channels;
 	indio_dev->num_channels = ARRAY_SIZE(cm3232_channels);
 	indio_dev->info = &cm3232_info;
@@ -357,7 +357,7 @@ static int cm3232_probe(struct i2c_client *client,
 	return iio_device_register(indio_dev);
 }
 
-static int cm3232_remove(struct i2c_client *client)
+static void cm3232_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
@@ -365,8 +365,6 @@ static int cm3232_remove(struct i2c_client *client)
 		CM3232_CMD_ALS_DISABLE);
 
 	iio_device_unregister(indio_dev);
-
-	return 0;
 }
 
 static const struct i2c_device_id cm3232_id[] = {
@@ -374,7 +372,6 @@ static const struct i2c_device_id cm3232_id[] = {
 	{}
 };
 
-#ifdef CONFIG_PM_SLEEP
 static int cm3232_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -403,9 +400,7 @@ static int cm3232_resume(struct device *dev)
 	return ret;
 }
 
-static const struct dev_pm_ops cm3232_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(cm3232_suspend, cm3232_resume)};
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(cm3232_pm_ops, cm3232_suspend, cm3232_resume);
 
 MODULE_DEVICE_TABLE(i2c, cm3232_id);
 
@@ -418,10 +413,8 @@ MODULE_DEVICE_TABLE(of, cm3232_of_match);
 static struct i2c_driver cm3232_driver = {
 	.driver = {
 		.name	= "cm3232",
-		.of_match_table = of_match_ptr(cm3232_of_match),
-#ifdef CONFIG_PM_SLEEP
-		.pm	= &cm3232_pm_ops,
-#endif
+		.of_match_table = cm3232_of_match,
+		.pm	= pm_sleep_ptr(&cm3232_pm_ops),
 	},
 	.id_table	= cm3232_id,
 	.probe		= cm3232_probe,
diff --git a/drivers/iio/light/cm3323.c b/drivers/iio/light/cm3323.c
index 0443861ba1ec..fd9a8c27de2e 100644
--- a/drivers/iio/light/cm3323.c
+++ b/drivers/iio/light/cm3323.c
@@ -231,7 +231,6 @@ static int cm3323_probe(struct i2c_client *client,
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &cm3323_info;
 	indio_dev->name = CM3323_DRV_NAME;
 	indio_dev->channels = cm3323_channels;
@@ -257,9 +256,16 @@ static const struct i2c_device_id cm3323_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, cm3323_id);
 
+static const struct of_device_id cm3323_of_match[] = {
+	{ .compatible = "capella,cm3323", },
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(of, cm3323_of_match);
+
 static struct i2c_driver cm3323_driver = {
 	.driver = {
 		.name = CM3323_DRV_NAME,
+		.of_match_table = cm3323_of_match,
 	},
 	.probe		= cm3323_probe,
 	.id_table	= cm3323_id,
diff --git a/drivers/iio/light/cm3605.c b/drivers/iio/light/cm3605.c
index 964ede49f662..0b30db77f78b 100644
--- a/drivers/iio/light/cm3605.c
+++ b/drivers/iio/light/cm3605.c
@@ -10,6 +10,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/events.h>
@@ -18,7 +19,7 @@
 #include <linux/init.h>
 #include <linux/leds.h>
 #include <linux/platform_device.h>
-#include <linux/of.h>
+#include <linux/property.h>
 #include <linux/regulator/consumer.h>
 #include <linux/gpio/consumer.h>
 #include <linux/interrupt.h>
@@ -156,9 +157,9 @@ static int cm3605_probe(struct platform_device *pdev)
 	struct cm3605 *cm3605;
 	struct iio_dev *indio_dev;
 	struct device *dev = &pdev->dev;
-	struct device_node *np = dev->of_node;
 	enum iio_chan_type ch_type;
 	u32 rset;
+	int irq;
 	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*cm3605));
@@ -170,7 +171,7 @@ static int cm3605_probe(struct platform_device *pdev)
 	cm3605->dev = dev;
 	cm3605->dir = IIO_EV_DIR_FALLING;
 
-	ret = of_property_read_u32(np, "capella,aset-resistance-ohms", &rset);
+	ret = device_property_read_u32(dev, "capella,aset-resistance-ohms", &rset);
 	if (ret) {
 		dev_info(dev, "no RSET specified, assuming 100K\n");
 		rset = 100000;
@@ -195,12 +196,9 @@ static int cm3605_probe(struct platform_device *pdev)
 
 	cm3605->aout = devm_iio_channel_get(dev, "aout");
 	if (IS_ERR(cm3605->aout)) {
-		if (PTR_ERR(cm3605->aout) == -ENODEV) {
-			dev_err(dev, "no ADC, deferring...\n");
-			return -EPROBE_DEFER;
-		}
-		dev_err(dev, "failed to get AOUT ADC channel\n");
-		return PTR_ERR(cm3605->aout);
+		ret = PTR_ERR(cm3605->aout);
+		ret = (ret == -ENODEV) ? -EPROBE_DEFER : ret;
+		return dev_err_probe(dev, ret, "failed to get AOUT ADC channel\n");
 	}
 	ret = iio_get_channel_type(cm3605->aout, &ch_type);
 	if (ret < 0)
@@ -211,10 +209,10 @@ static int cm3605_probe(struct platform_device *pdev)
 	}
 
 	cm3605->vdd = devm_regulator_get(dev, "vdd");
-	if (IS_ERR(cm3605->vdd)) {
-		dev_err(dev, "failed to get VDD regulator\n");
-		return PTR_ERR(cm3605->vdd);
-	}
+	if (IS_ERR(cm3605->vdd))
+		return dev_err_probe(dev, PTR_ERR(cm3605->vdd),
+				     "failed to get VDD regulator\n");
+
 	ret = regulator_enable(cm3605->vdd);
 	if (ret) {
 		dev_err(dev, "failed to enable VDD regulator\n");
@@ -223,13 +221,18 @@ static int cm3605_probe(struct platform_device *pdev)
 
 	cm3605->aset = devm_gpiod_get(dev, "aset", GPIOD_OUT_HIGH);
 	if (IS_ERR(cm3605->aset)) {
-		dev_err(dev, "no ASET GPIO\n");
-		ret = PTR_ERR(cm3605->aset);
+		ret = dev_err_probe(dev, PTR_ERR(cm3605->aset), "no ASET GPIO\n");
 		goto out_disable_vdd;
 	}
 
-	ret = devm_request_threaded_irq(dev, platform_get_irq(pdev, 0),
-			cm3605_prox_irq, NULL, 0, "cm3605", indio_dev);
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0) {
+		ret = dev_err_probe(dev, irq, "failed to get irq\n");
+		goto out_disable_aset;
+	}
+
+	ret = devm_request_threaded_irq(dev, irq, cm3605_prox_irq,
+					NULL, 0, "cm3605", indio_dev);
 	if (ret) {
 		dev_err(dev, "unable to request IRQ\n");
 		goto out_disable_aset;
@@ -239,7 +242,6 @@ static int cm3605_probe(struct platform_device *pdev)
 	led_trigger_register_simple("cm3605", &cm3605->led);
 	led_trigger_event(cm3605->led, LED_FULL);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &cm3605_info;
 	indio_dev->name = "cm3605";
 	indio_dev->channels = cm3605_channels;
@@ -278,7 +280,7 @@ static int cm3605_remove(struct platform_device *pdev)
 	return 0;
 }
 
-static int __maybe_unused cm3605_pm_suspend(struct device *dev)
+static int cm3605_pm_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct cm3605 *cm3605 = iio_priv(indio_dev);
@@ -289,7 +291,7 @@ static int __maybe_unused cm3605_pm_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused cm3605_pm_resume(struct device *dev)
+static int cm3605_pm_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct cm3605 *cm3605 = iio_priv(indio_dev);
@@ -302,11 +304,8 @@ static int __maybe_unused cm3605_pm_resume(struct device *dev)
 
 	return 0;
 }
-
-static const struct dev_pm_ops cm3605_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(cm3605_pm_suspend,
-				cm3605_pm_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(cm3605_dev_pm_ops, cm3605_pm_suspend,
+				cm3605_pm_resume);
 
 static const struct of_device_id cm3605_of_match[] = {
 	{.compatible = "capella,cm3605"},
@@ -318,7 +317,7 @@ static struct platform_driver cm3605_driver = {
 	.driver = {
 		.name = "cm3605",
 		.of_match_table = cm3605_of_match,
-		.pm = &cm3605_dev_pm_ops,
+		.pm = pm_sleep_ptr(&cm3605_dev_pm_ops),
 	},
 	.probe = cm3605_probe,
 	.remove = cm3605_remove,
diff --git a/drivers/iio/light/cm36651.c b/drivers/iio/light/cm36651.c
index 90e38fcc974b..6615c98b601c 100644
--- a/drivers/iio/light/cm36651.c
+++ b/drivers/iio/light/cm36651.c
@@ -632,10 +632,9 @@ static int cm36651_probe(struct i2c_client *client,
 	cm36651 = iio_priv(indio_dev);
 
 	cm36651->vled_reg = devm_regulator_get(&client->dev, "vled");
-	if (IS_ERR(cm36651->vled_reg)) {
-		dev_err(&client->dev, "get regulator vled failed\n");
-		return PTR_ERR(cm36651->vled_reg);
-	}
+	if (IS_ERR(cm36651->vled_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(cm36651->vled_reg),
+				     "get regulator vled failed\n");
 
 	ret = regulator_enable(cm36651->vled_reg);
 	if (ret) {
@@ -662,7 +661,6 @@ static int cm36651_probe(struct i2c_client *client,
 	}
 
 	mutex_init(&cm36651->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = cm36651_channels;
 	indio_dev->num_channels = ARRAY_SIZE(cm36651_channels);
 	indio_dev->info = &cm36651_info;
@@ -702,7 +700,7 @@ error_disable_reg:
 	return ret;
 }
 
-static int cm36651_remove(struct i2c_client *client)
+static void cm36651_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct cm36651_data *cm36651 = iio_priv(indio_dev);
@@ -712,8 +710,6 @@ static int cm36651_remove(struct i2c_client *client)
 	free_irq(client->irq, indio_dev);
 	i2c_unregister_device(cm36651->ps_client);
 	i2c_unregister_device(cm36651->ara_client);
-
-	return 0;
 }
 
 static const struct i2c_device_id cm36651_id[] = {
diff --git a/drivers/iio/light/cros_ec_light_prox.c b/drivers/iio/light/cros_ec_light_prox.c
index 7a838e2956f4..19e529c84e95 100644
--- a/drivers/iio/light/cros_ec_light_prox.c
+++ b/drivers/iio/light/cros_ec_light_prox.c
@@ -14,6 +14,7 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_data/cros_ec_commands.h>
 #include <linux/platform_data/cros_ec_proto.h>
@@ -145,8 +146,11 @@ static int cros_ec_light_prox_write(struct iio_dev *indio_dev,
 		break;
 	case IIO_CHAN_INFO_CALIBSCALE:
 		st->core.param.cmd = MOTIONSENSE_CMD_SENSOR_RANGE;
-		st->core.param.sensor_range.data = (val << 16) | (val2 / 100);
+		st->core.curr_range = (val << 16) | (val2 / 100);
+		st->core.param.sensor_range.data = st->core.curr_range;
 		ret = cros_ec_motion_send_host_cmd(&st->core, 0);
+		if (ret == 0)
+			st->core.range_updated = true;
 		break;
 	default:
 		ret = cros_ec_sensors_core_write(&st->core, chan, val, val2,
@@ -177,20 +181,18 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+					cros_ec_sensors_capture);
 	if (ret)
 		return ret;
 
 	indio_dev->info = &cros_ec_light_prox_info;
 	state = iio_priv(indio_dev);
-	state->core.type = state->core.resp->info.type;
-	state->core.loc = state->core.resp->info.location;
 	channel = state->channels;
 
 	/* Common part */
 	channel->info_mask_shared_by_all =
-		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
-		BIT(IIO_CHAN_INFO_FREQUENCY);
+		BIT(IIO_CHAN_INFO_SAMP_FREQ);
 	channel->info_mask_shared_by_all_available =
 		BIT(IIO_CHAN_INFO_SAMP_FREQ);
 	channel->scan_type.realbits = CROS_EC_SENSOR_BITS;
@@ -236,12 +238,8 @@ static int cros_ec_light_prox_probe(struct platform_device *pdev)
 
 	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-					      cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
-	return devm_iio_device_register(dev, indio_dev);
+	return cros_ec_sensors_core_register(dev, indio_dev,
+					     cros_ec_sensors_push_data);
 }
 
 static const struct platform_device_id cros_ec_light_prox_ids[] = {
diff --git a/drivers/iio/light/gp2ap002.c b/drivers/iio/light/gp2ap002.c
new file mode 100644
index 000000000000..8000fa347344
--- /dev/null
+++ b/drivers/iio/light/gp2ap002.c
@@ -0,0 +1,722 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * These are the two Sharp GP2AP002 variants supported by this driver:
+ * GP2AP002A00F Ambient Light and Proximity Sensor
+ * GP2AP002S00F Proximity Sensor
+ *
+ * Copyright (C) 2020 Linaro Ltd.
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ *
+ * Based partly on the code in Sony Ericssons GP2AP00200F driver by
+ * Courtney Cavin and Oskar Andero in drivers/input/misc/gp2ap002a00f.c
+ * Based partly on a Samsung misc driver submitted by
+ * Donggeun Kim & Minkyu Kang in 2011:
+ * https://lore.kernel.org/lkml/1315556546-7445-1-git-send-email-dg77.kim@samsung.com/
+ * Based partly on a submission by
+ * Jonathan Bakker and Paweł Chmiel in january 2019:
+ * https://lore.kernel.org/linux-input/20190125175045.22576-1-pawel.mikolaj.chmiel@gmail.com/
+ * Based partly on code from the Samsung GT-S7710 by <mjchen@sta.samsung.com>
+ * Based partly on the code in LG Electronics GP2AP00200F driver by
+ * Kenobi Lee <sungyoung.lee@lge.com> and EunYoung Cho <ey.cho@lge.com>
+ */
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/iio/events.h>
+#include <linux/iio/consumer.h> /* To get our ADC channel */
+#include <linux/iio/types.h> /* To deal with our ADC channel */
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/regulator/consumer.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
+#include <linux/bits.h>
+#include <linux/math64.h>
+#include <linux/pm.h>
+
+#define GP2AP002_PROX_CHANNEL 0
+#define GP2AP002_ALS_CHANNEL 1
+
+/* ------------------------------------------------------------------------ */
+/* ADDRESS SYMBOL             DATA                                 Init R/W */
+/*                   D7    D6    D5    D4    D3    D2    D1    D0           */
+/* ------------------------------------------------------------------------ */
+/*    0      PROX     X     X     X     X     X     X     X    VO  H'00   R */
+/*    1      GAIN     X     X     X     X  LED0     X     X     X  H'00   W */
+/*    2       HYS  HYSD HYSC1 HYSC0     X HYSF3 HYSF2 HYSF1 HYSF0  H'00   W */
+/*    3     CYCLE     X     X CYCL2 CYCL1 CYCL0  OSC2     X     X  H'00   W */
+/*    4     OPMOD     X     X     X   ASD     X     X  VCON   SSD  H'00   W */
+/*    6       CON     X     X     X OCON1 OCON0     X     X     X  H'00   W */
+/* ------------------------------------------------------------------------ */
+/* VO   :Proximity sensing result(0: no detection, 1: detection)            */
+/* LED0 :Select switch for LED driver's On-registence(0:2x higher, 1:normal)*/
+/* HYSD/HYSF :Adjusts the receiver sensitivity                              */
+/* OSC  :Select switch internal clocl frequency hoppling(0:effective)       */
+/* CYCL :Determine the detection cycle(typically 8ms, up to 128x)           */
+/* SSD  :Software Shutdown function(0:shutdown, 1:operating)                */
+/* VCON :VOUT output method control(0:normal, 1:interrupt)                  */
+/* ASD  :Select switch for analog sleep function(0:ineffective, 1:effective)*/
+/* OCON :Select switch for enabling/disabling VOUT (00:enable, 11:disable)  */
+
+#define GP2AP002_PROX				0x00
+#define GP2AP002_GAIN				0x01
+#define GP2AP002_HYS				0x02
+#define GP2AP002_CYCLE				0x03
+#define GP2AP002_OPMOD				0x04
+#define GP2AP002_CON				0x06
+
+#define GP2AP002_PROX_VO_DETECT			BIT(0)
+
+/* Setting this bit to 0 means 2x higher LED resistance */
+#define GP2AP002_GAIN_LED_NORMAL		BIT(3)
+
+/*
+ * These bits adjusts the proximity sensitivity, determining characteristics
+ * of the detection distance and its hysteresis.
+ */
+#define GP2AP002_HYS_HYSD_SHIFT		7
+#define GP2AP002_HYS_HYSD_MASK		BIT(7)
+#define GP2AP002_HYS_HYSC_SHIFT		5
+#define GP2AP002_HYS_HYSC_MASK		GENMASK(6, 5)
+#define GP2AP002_HYS_HYSF_SHIFT		0
+#define GP2AP002_HYS_HYSF_MASK		GENMASK(3, 0)
+#define GP2AP002_HYS_MASK		(GP2AP002_HYS_HYSD_MASK | \
+					 GP2AP002_HYS_HYSC_MASK | \
+					 GP2AP002_HYS_HYSF_MASK)
+
+/*
+ * These values determine the detection cycle response time
+ * 0: 8ms, 1: 16ms, 2: 32ms, 3: 64ms, 4: 128ms,
+ * 5: 256ms, 6: 512ms, 7: 1024ms
+ */
+#define GP2AP002_CYCLE_CYCL_SHIFT	3
+#define GP2AP002_CYCLE_CYCL_MASK	GENMASK(5, 3)
+
+/*
+ * Select switch for internal clock frequency hopping
+ *	0: effective,
+ *	1: ineffective
+ */
+#define GP2AP002_CYCLE_OSC_EFFECTIVE	0
+#define GP2AP002_CYCLE_OSC_INEFFECTIVE	BIT(2)
+#define GP2AP002_CYCLE_OSC_MASK		BIT(2)
+
+/* Analog sleep effective */
+#define GP2AP002_OPMOD_ASD		BIT(4)
+/* Enable chip */
+#define GP2AP002_OPMOD_SSD_OPERATING	BIT(0)
+/* IRQ mode */
+#define GP2AP002_OPMOD_VCON_IRQ		BIT(1)
+#define GP2AP002_OPMOD_MASK		(BIT(0) | BIT(1) | BIT(4))
+
+/*
+ * Select switch for enabling/disabling Vout pin
+ * 0: enable
+ * 2: force to go Low
+ * 3: force to go High
+ */
+#define GP2AP002_CON_OCON_SHIFT		3
+#define GP2AP002_CON_OCON_ENABLE	(0x0 << GP2AP002_CON_OCON_SHIFT)
+#define GP2AP002_CON_OCON_LOW		(0x2 << GP2AP002_CON_OCON_SHIFT)
+#define GP2AP002_CON_OCON_HIGH		(0x3 << GP2AP002_CON_OCON_SHIFT)
+#define GP2AP002_CON_OCON_MASK		(0x3 << GP2AP002_CON_OCON_SHIFT)
+
+/**
+ * struct gp2ap002 - GP2AP002 state
+ * @map: regmap pointer for the i2c regmap
+ * @dev: pointer to parent device
+ * @vdd: regulator controlling VDD
+ * @vio: regulator controlling VIO
+ * @alsout: IIO ADC channel to convert the ALSOUT signal
+ * @hys_far: hysteresis control from device tree
+ * @hys_close: hysteresis control from device tree
+ * @is_gp2ap002s00f: this is the GP2AP002F variant of the chip
+ * @irq: the IRQ line used by this device
+ * @enabled: we cannot read the status of the hardware so we need to
+ * keep track of whether the event is enabled using this state variable
+ */
+struct gp2ap002 {
+	struct regmap *map;
+	struct device *dev;
+	struct regulator *vdd;
+	struct regulator *vio;
+	struct iio_channel *alsout;
+	u8 hys_far;
+	u8 hys_close;
+	bool is_gp2ap002s00f;
+	int irq;
+	bool enabled;
+};
+
+static irqreturn_t gp2ap002_prox_irq(int irq, void *d)
+{
+	struct iio_dev *indio_dev = d;
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+	u64 ev;
+	int val;
+	int ret;
+
+	if (!gp2ap002->enabled)
+		goto err_retrig;
+
+	ret = regmap_read(gp2ap002->map, GP2AP002_PROX, &val);
+	if (ret) {
+		dev_err(gp2ap002->dev, "error reading proximity\n");
+		goto err_retrig;
+	}
+
+	if (val & GP2AP002_PROX_VO_DETECT) {
+		/* Close */
+		dev_dbg(gp2ap002->dev, "close\n");
+		ret = regmap_write(gp2ap002->map, GP2AP002_HYS,
+				   gp2ap002->hys_far);
+		if (ret)
+			dev_err(gp2ap002->dev,
+				"error setting up proximity hysteresis\n");
+		ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, GP2AP002_PROX_CHANNEL,
+					IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING);
+	} else {
+		/* Far */
+		dev_dbg(gp2ap002->dev, "far\n");
+		ret = regmap_write(gp2ap002->map, GP2AP002_HYS,
+				   gp2ap002->hys_close);
+		if (ret)
+			dev_err(gp2ap002->dev,
+				"error setting up proximity hysteresis\n");
+		ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, GP2AP002_PROX_CHANNEL,
+					IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING);
+	}
+	iio_push_event(indio_dev, ev, iio_get_time_ns(indio_dev));
+
+	/*
+	 * After changing hysteresis, we need to wait for one detection
+	 * cycle to see if anything changed, or we will just trigger the
+	 * previous interrupt again. A detection cycle depends on the CYCLE
+	 * register, we are hard-coding ~8 ms in probe() so wait some more
+	 * than this, 20-30 ms.
+	 */
+	usleep_range(20000, 30000);
+
+err_retrig:
+	ret = regmap_write(gp2ap002->map, GP2AP002_CON,
+			   GP2AP002_CON_OCON_ENABLE);
+	if (ret)
+		dev_err(gp2ap002->dev, "error setting up VOUT control\n");
+
+	return IRQ_HANDLED;
+}
+
+/*
+ * This array maps current and lux.
+ *
+ * Ambient light sensing range is 3 to 55000 lux.
+ *
+ * This mapping is based on the following formula.
+ * illuminance = 10 ^ (current[mA] / 10)
+ *
+ * When the ADC measures 0, return 0 lux.
+ */
+static const u16 gp2ap002_illuminance_table[] = {
+	0, 1, 1, 2, 2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 32, 40, 50, 63, 79,
+	100, 126, 158, 200, 251, 316, 398, 501, 631, 794, 1000, 1259, 1585,
+	1995, 2512, 3162, 3981, 5012, 6310, 7943, 10000, 12589, 15849, 19953,
+	25119, 31623, 39811, 50119,
+};
+
+static int gp2ap002_get_lux(struct gp2ap002 *gp2ap002)
+{
+	int ret, res;
+	u16 lux;
+
+	ret = iio_read_channel_processed(gp2ap002->alsout, &res);
+	if (ret < 0)
+		return ret;
+
+	dev_dbg(gp2ap002->dev, "read %d mA from ADC\n", res);
+
+	/* ensure we don't under/overflow */
+	res = clamp(res, 0, (int)ARRAY_SIZE(gp2ap002_illuminance_table) - 1);
+	lux = gp2ap002_illuminance_table[res];
+
+	return (int)lux;
+}
+
+static int gp2ap002_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long mask)
+{
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+	int ret;
+
+	pm_runtime_get_sync(gp2ap002->dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		switch (chan->type) {
+		case IIO_LIGHT:
+			ret = gp2ap002_get_lux(gp2ap002);
+			if (ret < 0)
+				return ret;
+			*val = ret;
+			ret = IIO_VAL_INT;
+			goto out;
+		default:
+			ret = -EINVAL;
+			goto out;
+		}
+	default:
+		ret = -EINVAL;
+	}
+
+out:
+	pm_runtime_mark_last_busy(gp2ap002->dev);
+	pm_runtime_put_autosuspend(gp2ap002->dev);
+
+	return ret;
+}
+
+static int gp2ap002_init(struct gp2ap002 *gp2ap002)
+{
+	int ret;
+
+	/* Set up the IR LED resistance */
+	ret = regmap_write(gp2ap002->map, GP2AP002_GAIN,
+			   GP2AP002_GAIN_LED_NORMAL);
+	if (ret) {
+		dev_err(gp2ap002->dev, "error setting up LED gain\n");
+		return ret;
+	}
+	ret = regmap_write(gp2ap002->map, GP2AP002_HYS, gp2ap002->hys_far);
+	if (ret) {
+		dev_err(gp2ap002->dev,
+			"error setting up proximity hysteresis\n");
+		return ret;
+	}
+
+	/* Disable internal frequency hopping */
+	ret = regmap_write(gp2ap002->map, GP2AP002_CYCLE,
+			   GP2AP002_CYCLE_OSC_INEFFECTIVE);
+	if (ret) {
+		dev_err(gp2ap002->dev,
+			"error setting up internal frequency hopping\n");
+		return ret;
+	}
+
+	/* Enable chip and IRQ, disable analog sleep */
+	ret = regmap_write(gp2ap002->map, GP2AP002_OPMOD,
+			   GP2AP002_OPMOD_SSD_OPERATING |
+			   GP2AP002_OPMOD_VCON_IRQ);
+	if (ret) {
+		dev_err(gp2ap002->dev, "error setting up operation mode\n");
+		return ret;
+	}
+
+	/* Interrupt on VOUT enabled */
+	ret = regmap_write(gp2ap002->map, GP2AP002_CON,
+			   GP2AP002_CON_OCON_ENABLE);
+	if (ret)
+		dev_err(gp2ap002->dev, "error setting up VOUT control\n");
+
+	return ret;
+}
+
+static int gp2ap002_read_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir)
+{
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+
+	/*
+	 * We just keep track of this internally, as it is not possible to
+	 * query the hardware.
+	 */
+	return gp2ap002->enabled;
+}
+
+static int gp2ap002_write_event_config(struct iio_dev *indio_dev,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_type type,
+				       enum iio_event_direction dir,
+				       int state)
+{
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+
+	if (state) {
+		/*
+		 * This will bring the regulators up (unless they are on
+		 * already) and reintialize the sensor by using runtime_pm
+		 * callbacks.
+		 */
+		pm_runtime_get_sync(gp2ap002->dev);
+		gp2ap002->enabled = true;
+	} else {
+		pm_runtime_mark_last_busy(gp2ap002->dev);
+		pm_runtime_put_autosuspend(gp2ap002->dev);
+		gp2ap002->enabled = false;
+	}
+
+	return 0;
+}
+
+static const struct iio_info gp2ap002_info = {
+	.read_raw = gp2ap002_read_raw,
+	.read_event_config = gp2ap002_read_event_config,
+	.write_event_config = gp2ap002_write_event_config,
+};
+
+static const struct iio_event_spec gp2ap002_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec gp2ap002_channels[] = {
+	{
+		.type = IIO_PROXIMITY,
+		.event_spec = gp2ap002_events,
+		.num_event_specs = ARRAY_SIZE(gp2ap002_events),
+	},
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.channel = GP2AP002_ALS_CHANNEL,
+	},
+};
+
+/*
+ * We need a special regmap because this hardware expects to
+ * write single bytes to registers but read a 16bit word on some
+ * variants and discard the lower 8 bits so combine
+ * i2c_smbus_read_word_data() with i2c_smbus_write_byte_data()
+ * selectively like this.
+ */
+static int gp2ap002_regmap_i2c_read(void *context, unsigned int reg,
+				    unsigned int *val)
+{
+	struct device *dev = context;
+	struct i2c_client *i2c = to_i2c_client(dev);
+	int ret;
+
+	ret = i2c_smbus_read_word_data(i2c, reg);
+	if (ret < 0)
+		return ret;
+
+	*val = (ret >> 8) & 0xFF;
+
+	return 0;
+}
+
+static int gp2ap002_regmap_i2c_write(void *context, unsigned int reg,
+				     unsigned int val)
+{
+	struct device *dev = context;
+	struct i2c_client *i2c = to_i2c_client(dev);
+
+	return i2c_smbus_write_byte_data(i2c, reg, val);
+}
+
+static struct regmap_bus gp2ap002_regmap_bus = {
+	.reg_read = gp2ap002_regmap_i2c_read,
+	.reg_write = gp2ap002_regmap_i2c_write,
+};
+
+static int gp2ap002_probe(struct i2c_client *client,
+			  const struct i2c_device_id *id)
+{
+	struct gp2ap002 *gp2ap002;
+	struct iio_dev *indio_dev;
+	struct device *dev = &client->dev;
+	enum iio_chan_type ch_type;
+	static const struct regmap_config config = {
+		.reg_bits = 8,
+		.val_bits = 8,
+		.max_register = GP2AP002_CON,
+	};
+	struct regmap *regmap;
+	int num_chan;
+	const char *compat;
+	u8 val;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*gp2ap002));
+	if (!indio_dev)
+		return -ENOMEM;
+	i2c_set_clientdata(client, indio_dev);
+
+	gp2ap002 = iio_priv(indio_dev);
+	gp2ap002->dev = dev;
+
+	/*
+	 * Check the device compatible like this makes it possible to use
+	 * ACPI PRP0001 for registering the sensor using device tree
+	 * properties.
+	 */
+	ret = device_property_read_string(dev, "compatible", &compat);
+	if (ret) {
+		dev_err(dev, "cannot check compatible\n");
+		return ret;
+	}
+	gp2ap002->is_gp2ap002s00f = !strcmp(compat, "sharp,gp2ap002s00f");
+
+	regmap = devm_regmap_init(dev, &gp2ap002_regmap_bus, dev, &config);
+	if (IS_ERR(regmap)) {
+		dev_err(dev, "Failed to register i2c regmap %ld\n", PTR_ERR(regmap));
+		return PTR_ERR(regmap);
+	}
+	gp2ap002->map = regmap;
+
+	/*
+	 * The hysteresis settings are coded into the device tree as values
+	 * to be written into the hysteresis register. The datasheet defines
+	 * modes "A", "B1" and "B2" with fixed values to be use but vendor
+	 * code trees for actual devices are tweaking these values and refer to
+	 * modes named things like "B1.5". To be able to support any devices,
+	 * we allow passing an arbitrary hysteresis setting for "near" and
+	 * "far".
+	 */
+
+	/* Check the device tree for the IR LED hysteresis */
+	ret = device_property_read_u8(dev, "sharp,proximity-far-hysteresis",
+				      &val);
+	if (ret) {
+		dev_err(dev, "failed to obtain proximity far setting\n");
+		return ret;
+	}
+	dev_dbg(dev, "proximity far setting %02x\n", val);
+	gp2ap002->hys_far = val;
+
+	ret = device_property_read_u8(dev, "sharp,proximity-close-hysteresis",
+				      &val);
+	if (ret) {
+		dev_err(dev, "failed to obtain proximity close setting\n");
+		return ret;
+	}
+	dev_dbg(dev, "proximity close setting %02x\n", val);
+	gp2ap002->hys_close = val;
+
+	/* The GP2AP002A00F has a light sensor too */
+	if (!gp2ap002->is_gp2ap002s00f) {
+		gp2ap002->alsout = devm_iio_channel_get(dev, "alsout");
+		if (IS_ERR(gp2ap002->alsout)) {
+			ret = PTR_ERR(gp2ap002->alsout);
+			ret = (ret == -ENODEV) ? -EPROBE_DEFER : ret;
+			return dev_err_probe(dev, ret, "failed to get ALSOUT ADC channel\n");
+		}
+		ret = iio_get_channel_type(gp2ap002->alsout, &ch_type);
+		if (ret < 0)
+			return ret;
+		if (ch_type != IIO_CURRENT) {
+			dev_err(dev,
+				"wrong type of IIO channel specified for ALSOUT\n");
+			return -EINVAL;
+		}
+	}
+
+	gp2ap002->vdd = devm_regulator_get(dev, "vdd");
+	if (IS_ERR(gp2ap002->vdd))
+		return dev_err_probe(dev, PTR_ERR(gp2ap002->vdd),
+				     "failed to get VDD regulator\n");
+
+	gp2ap002->vio = devm_regulator_get(dev, "vio");
+	if (IS_ERR(gp2ap002->vio))
+		return dev_err_probe(dev, PTR_ERR(gp2ap002->vio),
+				     "failed to get VIO regulator\n");
+
+	/* Operating voltage 2.4V .. 3.6V according to datasheet */
+	ret = regulator_set_voltage(gp2ap002->vdd, 2400000, 3600000);
+	if (ret) {
+		dev_err(dev, "failed to sett VDD voltage\n");
+		return ret;
+	}
+
+	/* VIO should be between 1.65V and VDD */
+	ret = regulator_get_voltage(gp2ap002->vdd);
+	if (ret < 0) {
+		dev_err(dev, "failed to get VDD voltage\n");
+		return ret;
+	}
+	ret = regulator_set_voltage(gp2ap002->vio, 1650000, ret);
+	if (ret) {
+		dev_err(dev, "failed to set VIO voltage\n");
+		return ret;
+	}
+
+	ret = regulator_enable(gp2ap002->vdd);
+	if (ret) {
+		dev_err(dev, "failed to enable VDD regulator\n");
+		return ret;
+	}
+	ret = regulator_enable(gp2ap002->vio);
+	if (ret) {
+		dev_err(dev, "failed to enable VIO regulator\n");
+		goto out_disable_vdd;
+	}
+
+	msleep(20);
+
+	/*
+	 * Initialize the device and signal to runtime PM that now we are
+	 * definitely up and using power.
+	 */
+	ret = gp2ap002_init(gp2ap002);
+	if (ret) {
+		dev_err(dev, "initialization failed\n");
+		goto out_disable_vio;
+	}
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+	gp2ap002->enabled = false;
+
+	ret = devm_request_threaded_irq(dev, client->irq, NULL,
+					gp2ap002_prox_irq, IRQF_ONESHOT,
+					"gp2ap002", indio_dev);
+	if (ret) {
+		dev_err(dev, "unable to request IRQ\n");
+		goto out_put_pm;
+	}
+	gp2ap002->irq = client->irq;
+
+	/*
+	 * As the device takes 20 ms + regulator delay to come up with a fresh
+	 * measurement after power-on, do not shut it down unnecessarily.
+	 * Set autosuspend to a one second.
+	 */
+	pm_runtime_set_autosuspend_delay(dev, 1000);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_put(dev);
+
+	indio_dev->info = &gp2ap002_info;
+	indio_dev->name = "gp2ap002";
+	indio_dev->channels = gp2ap002_channels;
+	/* Skip light channel for the proximity-only sensor */
+	num_chan = ARRAY_SIZE(gp2ap002_channels);
+	if (gp2ap002->is_gp2ap002s00f)
+		num_chan--;
+	indio_dev->num_channels = num_chan;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto out_disable_pm;
+	dev_dbg(dev, "Sharp GP2AP002 probed successfully\n");
+
+	return 0;
+
+out_put_pm:
+	pm_runtime_put_noidle(dev);
+out_disable_pm:
+	pm_runtime_disable(dev);
+out_disable_vio:
+	regulator_disable(gp2ap002->vio);
+out_disable_vdd:
+	regulator_disable(gp2ap002->vdd);
+	return ret;
+}
+
+static void gp2ap002_remove(struct i2c_client *client)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+	struct device *dev = &client->dev;
+
+	pm_runtime_get_sync(dev);
+	pm_runtime_put_noidle(dev);
+	pm_runtime_disable(dev);
+	iio_device_unregister(indio_dev);
+	regulator_disable(gp2ap002->vio);
+	regulator_disable(gp2ap002->vdd);
+}
+
+static int gp2ap002_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+	int ret;
+
+	/* Deactivate the IRQ */
+	disable_irq(gp2ap002->irq);
+
+	/* Disable chip and IRQ, everything off */
+	ret = regmap_write(gp2ap002->map, GP2AP002_OPMOD, 0x00);
+	if (ret) {
+		dev_err(gp2ap002->dev, "error setting up operation mode\n");
+		return ret;
+	}
+	/*
+	 * As these regulators may be shared, at least we are now in
+	 * sleep even if the regulators aren't really turned off.
+	 */
+	regulator_disable(gp2ap002->vio);
+	regulator_disable(gp2ap002->vdd);
+
+	return 0;
+}
+
+static int gp2ap002_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct gp2ap002 *gp2ap002 = iio_priv(indio_dev);
+	int ret;
+
+	ret = regulator_enable(gp2ap002->vdd);
+	if (ret) {
+		dev_err(dev, "failed to enable VDD regulator in resume path\n");
+		return ret;
+	}
+	ret = regulator_enable(gp2ap002->vio);
+	if (ret) {
+		dev_err(dev, "failed to enable VIO regulator in resume path\n");
+		return ret;
+	}
+
+	msleep(20);
+
+	ret = gp2ap002_init(gp2ap002);
+	if (ret) {
+		dev_err(dev, "re-initialization failed\n");
+		return ret;
+	}
+
+	/* Re-activate the IRQ */
+	enable_irq(gp2ap002->irq);
+
+	return 0;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(gp2ap002_dev_pm_ops, gp2ap002_runtime_suspend,
+				 gp2ap002_runtime_resume, NULL);
+
+static const struct i2c_device_id gp2ap002_id_table[] = {
+	{ "gp2ap002", 0 },
+	{ },
+};
+MODULE_DEVICE_TABLE(i2c, gp2ap002_id_table);
+
+static const struct of_device_id gp2ap002_of_match[] = {
+	{ .compatible = "sharp,gp2ap002a00f" },
+	{ .compatible = "sharp,gp2ap002s00f" },
+	{ },
+};
+MODULE_DEVICE_TABLE(of, gp2ap002_of_match);
+
+static struct i2c_driver gp2ap002_driver = {
+	.driver = {
+		.name = "gp2ap002",
+		.of_match_table = gp2ap002_of_match,
+		.pm = pm_ptr(&gp2ap002_dev_pm_ops),
+	},
+	.probe = gp2ap002_probe,
+	.remove = gp2ap002_remove,
+	.id_table = gp2ap002_id_table,
+};
+module_i2c_driver(gp2ap002_driver);
+
+MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>");
+MODULE_DESCRIPTION("GP2AP002 ambient light and proximity sensor driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/light/gp2ap020a00f.c b/drivers/iio/light/gp2ap020a00f.c
index 4d70c5bf35da..826439299e8b 100644
--- a/drivers/iio/light/gp2ap020a00f.c
+++ b/drivers/iio/light/gp2ap020a00f.c
@@ -38,8 +38,8 @@
 #include <linux/irq.h>
 #include <linux/irq_work.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
 #include <linux/regmap.h>
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
@@ -1420,12 +1420,8 @@ static int gp2ap020a00f_buffer_postenable(struct iio_dev *indio_dev)
 		goto error_unlock;
 
 	data->buffer = kmalloc(indio_dev->scan_bytes, GFP_KERNEL);
-	if (!data->buffer) {
+	if (!data->buffer)
 		err = -ENOMEM;
-		goto error_unlock;
-	}
-
-	err = iio_triggered_buffer_postenable(indio_dev);
 
 error_unlock:
 	mutex_unlock(&data->lock);
@@ -1436,14 +1432,10 @@ error_unlock:
 static int gp2ap020a00f_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct gp2ap020a00f_data *data = iio_priv(indio_dev);
-	int i, err;
+	int i, err = 0;
 
 	mutex_lock(&data->lock);
 
-	err = iio_triggered_buffer_predisable(indio_dev);
-	if (err < 0)
-		goto error_unlock;
-
 	for_each_set_bit(i, indio_dev->active_scan_mask,
 		indio_dev->masklength) {
 		switch (i) {
@@ -1465,7 +1457,6 @@ static int gp2ap020a00f_buffer_predisable(struct iio_dev *indio_dev)
 	if (err == 0)
 		kfree(data->buffer);
 
-error_unlock:
 	mutex_unlock(&data->lock);
 
 	return err;
@@ -1476,9 +1467,6 @@ static const struct iio_buffer_setup_ops gp2ap020a00f_buffer_setup_ops = {
 	.predisable = &gp2ap020a00f_buffer_predisable,
 };
 
-static const struct iio_trigger_ops gp2ap020a00f_trigger_ops = {
-};
-
 static int gp2ap020a00f_probe(struct i2c_client *client,
 				const struct i2c_device_id *id)
 {
@@ -1526,7 +1514,6 @@ static int gp2ap020a00f_probe(struct i2c_client *client,
 	init_waitqueue_head(&data->data_ready_queue);
 
 	mutex_init(&data->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = gp2ap020a00f_channels;
 	indio_dev->num_channels = ARRAY_SIZE(gp2ap020a00f_channels);
 	indio_dev->info = &gp2ap020a00f_info;
@@ -1560,9 +1547,6 @@ static int gp2ap020a00f_probe(struct i2c_client *client,
 		goto error_uninit_buffer;
 	}
 
-	data->trig->ops = &gp2ap020a00f_trigger_ops;
-	data->trig->dev.parent = &data->client->dev;
-
 	init_irq_work(&data->work, gp2ap020a00f_iio_trigger_work);
 
 	err = iio_trigger_register(data->trig);
@@ -1589,7 +1573,7 @@ error_regulator_disable:
 	return err;
 }
 
-static int gp2ap020a00f_remove(struct i2c_client *client)
+static void gp2ap020a00f_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct gp2ap020a00f_data *data = iio_priv(indio_dev);
@@ -1605,8 +1589,6 @@ static int gp2ap020a00f_remove(struct i2c_client *client)
 	free_irq(client->irq, indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	regulator_disable(data->vled_reg);
-
-	return 0;
 }
 
 static const struct i2c_device_id gp2ap020a00f_id[] = {
@@ -1616,18 +1598,16 @@ static const struct i2c_device_id gp2ap020a00f_id[] = {
 
 MODULE_DEVICE_TABLE(i2c, gp2ap020a00f_id);
 
-#ifdef CONFIG_OF
 static const struct of_device_id gp2ap020a00f_of_match[] = {
 	{ .compatible = "sharp,gp2ap020a00f" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, gp2ap020a00f_of_match);
-#endif
 
 static struct i2c_driver gp2ap020a00f_driver = {
 	.driver = {
 		.name	= GP2A_I2C_NAME,
-		.of_match_table = of_match_ptr(gp2ap020a00f_of_match),
+		.of_match_table = gp2ap020a00f_of_match,
 	},
 	.probe		= gp2ap020a00f_probe,
 	.remove		= gp2ap020a00f_remove,
diff --git a/drivers/iio/light/hid-sensor-als.c b/drivers/iio/light/hid-sensor-als.c
index b6cd299517d1..5a1a625d8d16 100644
--- a/drivers/iio/light/hid-sensor-als.c
+++ b/drivers/iio/light/hid-sensor-als.c
@@ -6,16 +6,11 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum {
@@ -24,15 +19,26 @@ enum {
 	CHANNEL_SCAN_INDEX_MAX
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX
+
 struct als_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info als_illum;
-	u32 illum[CHANNEL_SCAN_INDEX_MAX];
+	struct {
+		u32 illum[CHANNEL_SCAN_INDEX_MAX];
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
+};
+
+static const u32 als_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_LIGHT,
+	HID_USAGE_SENSOR_LIGHT_ILLUM,
 };
 
 /* Channel definitions */
@@ -45,7 +51,8 @@ static const struct iio_chan_spec als_channels[] = {
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
 		BIT(IIO_CHAN_INFO_SCALE) |
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
-		BIT(IIO_CHAN_INFO_HYSTERESIS),
+		BIT(IIO_CHAN_INFO_HYSTERESIS) |
+		BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
 		.scan_index = CHANNEL_SCAN_INDEX_INTENSITY,
 	},
 	{
@@ -54,9 +61,11 @@ static const struct iio_chan_spec als_channels[] = {
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
 		BIT(IIO_CHAN_INFO_SCALE) |
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
-		BIT(IIO_CHAN_INFO_HYSTERESIS),
+		BIT(IIO_CHAN_INFO_HYSTERESIS) |
+		BIT(IIO_CHAN_INFO_HYSTERESIS_RELATIVE),
 		.scan_index = CHANNEL_SCAN_INDEX_ILLUM,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -131,6 +140,10 @@ static int als_read_raw(struct iio_dev *indio_dev,
 		ret_type = hid_sensor_read_raw_hyst_value(
 				&als_state->common_attributes, val, val2);
 		break;
+	case IIO_CHAN_INFO_HYSTERESIS_RELATIVE:
+		ret_type = hid_sensor_read_raw_hyst_rel_value(
+				&als_state->common_attributes, val, val2);
+		break;
 	default:
 		ret_type = -EINVAL;
 		break;
@@ -158,6 +171,10 @@ static int als_write_raw(struct iio_dev *indio_dev,
 		ret = hid_sensor_write_raw_hyst_value(
 				&als_state->common_attributes, val, val2);
 		break;
+	case IIO_CHAN_INFO_HYSTERESIS_RELATIVE:
+		ret = hid_sensor_write_raw_hyst_rel_value(
+				&als_state->common_attributes, val, val2);
+		break;
 	default:
 		ret = -EINVAL;
 	}
@@ -170,14 +187,6 @@ static const struct iio_info als_info = {
 	.write_raw = &als_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
-					int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int als_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -187,10 +196,14 @@ static int als_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct als_state *als_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "als_proc_event\n");
-	if (atomic_read(&als_state->common_attributes.data_ready))
-		hid_sensor_push_data(indio_dev,
-				&als_state->illum,
-				sizeof(als_state->illum));
+	if (atomic_read(&als_state->common_attributes.data_ready)) {
+		if (!als_state->timestamp)
+			als_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &als_state->scan,
+						   als_state->timestamp);
+		als_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -208,10 +221,14 @@ static int als_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_LIGHT_ILLUM:
-		als_state->illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data;
-		als_state->illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
+		als_state->scan.illum[CHANNEL_SCAN_INDEX_INTENSITY] = sample_data;
+		als_state->scan.illum[CHANNEL_SCAN_INDEX_ILLUM] = sample_data;
 		ret = 0;
 		break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		als_state->timestamp = hid_sensor_convert_timestamp(&als_state->common_attributes,
+								    *(s64 *)raw_data);
+		break;
 	default:
 		break;
 	}
@@ -247,17 +264,6 @@ static int als_parse_report(struct platform_device *pdev,
 				&st->als_illum,
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_LIGHT,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
 	return ret;
 }
 
@@ -280,14 +286,16 @@ static int hid_als_probe(struct platform_device *pdev)
 	als_state->common_attributes.pdev = pdev;
 
 	ret = hid_sensor_parse_common_attributes(hsdev, HID_USAGE_SENSOR_ALS,
-					&als_state->common_attributes);
+					&als_state->common_attributes,
+					als_sensitivity_addresses,
+					ARRAY_SIZE(als_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
 
-	indio_dev->channels = kmemdup(als_channels,
-				      sizeof(als_channels), GFP_KERNEL);
+	indio_dev->channels = devm_kmemdup(&pdev->dev, als_channels,
+					   sizeof(als_channels), GFP_KERNEL);
 	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
 		return -ENOMEM;
@@ -298,28 +306,22 @@ static int hid_als_probe(struct platform_device *pdev)
 			       HID_USAGE_SENSOR_ALS, als_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
-		goto error_free_dev_mem;
+		return ret;
 	}
 
 	indio_dev->num_channels =
 				ARRAY_SIZE(als_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &als_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&als_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&als_state->common_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -343,11 +345,7 @@ static int hid_als_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&als_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
 	return ret;
 }
 
@@ -360,9 +358,7 @@ static int hid_als_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_ALS);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&als_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &als_state->common_attributes);
 
 	return 0;
 }
@@ -390,3 +386,4 @@ module_platform_driver(hid_als_platform_driver);
 MODULE_DESCRIPTION("HID Sensor ALS");
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/light/hid-sensor-prox.c b/drivers/iio/light/hid-sensor-prox.c
index 7e1030af9ba3..f10fa2abfe72 100644
--- a/drivers/iio/light/hid-sensor-prox.c
+++ b/drivers/iio/light/hid-sensor-prox.c
@@ -6,16 +6,11 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 #define CHANNEL_SCAN_INDEX_PRESENCE 0
@@ -25,6 +20,14 @@ struct prox_state {
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info prox_attr;
 	u32 human_presence;
+	int scale_pre_decml;
+	int scale_post_decml;
+	int scale_precision;
+};
+
+static const u32 prox_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_HUMAN_PRESENCE,
+	HID_USAGE_SENSOR_DATA_PRESENCE,
 };
 
 /* Channel definitions */
@@ -95,8 +98,9 @@ static int prox_read_raw(struct iio_dev *indio_dev,
 		ret_type = IIO_VAL_INT;
 		break;
 	case IIO_CHAN_INFO_SCALE:
-		*val = prox_state->prox_attr.units;
-		ret_type = IIO_VAL_INT;
+		*val = prox_state->scale_pre_decml;
+		*val2 = prox_state->scale_post_decml;
+		ret_type = prox_state->scale_precision;
 		break;
 	case IIO_CHAN_INFO_OFFSET:
 		*val = hid_sensor_convert_exponent(
@@ -218,24 +222,6 @@ static int prox_parse_report(struct platform_device *pdev,
 	dev_dbg(&pdev->dev, "prox %x:%x\n", st->prox_attr.index,
 			st->prox_attr.report_id);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_PRESENCE,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
-	if (st->common_attributes.sensitivity.index < 0)
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_HUMAN_PRESENCE,
-			&st->common_attributes.sensitivity);
-
 	return ret;
 }
 
@@ -259,14 +245,16 @@ static int hid_prox_probe(struct platform_device *pdev)
 	prox_state->common_attributes.pdev = pdev;
 
 	ret = hid_sensor_parse_common_attributes(hsdev, HID_USAGE_SENSOR_PROX,
-					&prox_state->common_attributes);
+					&prox_state->common_attributes,
+					prox_sensitivity_addresses,
+					ARRAY_SIZE(prox_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
 
-	indio_dev->channels = kmemdup(prox_channels, sizeof(prox_channels),
-				      GFP_KERNEL);
+	indio_dev->channels = devm_kmemdup(&pdev->dev, prox_channels,
+					   sizeof(prox_channels), GFP_KERNEL);
 	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
 		return -ENOMEM;
@@ -277,27 +265,21 @@ static int hid_prox_probe(struct platform_device *pdev)
 				HID_USAGE_SENSOR_PROX, prox_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
-		goto error_free_dev_mem;
+		return ret;
 	}
 
 	indio_dev->num_channels = ARRAY_SIZE(prox_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &prox_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&prox_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&prox_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -321,11 +303,7 @@ static int hid_prox_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&prox_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &prox_state->common_attributes);
 	return ret;
 }
 
@@ -338,9 +316,7 @@ static int hid_prox_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PROX);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&prox_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &prox_state->common_attributes);
 
 	return 0;
 }
@@ -368,3 +344,4 @@ module_platform_driver(hid_prox_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Proximity");
 MODULE_AUTHOR("Archana Patni <archana.patni@intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/light/iqs621-als.c b/drivers/iio/light/iqs621-als.c
new file mode 100644
index 000000000000..004ea890a4b2
--- /dev/null
+++ b/drivers/iio/light/iqs621-als.c
@@ -0,0 +1,618 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Azoteq IQS621/622 Ambient Light Sensors
+ *
+ * Copyright (C) 2019 Jeff LaBundy <jeff@labundy.com>
+ */
+
+#include <linux/device.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/kernel.h>
+#include <linux/mfd/iqs62x.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define IQS621_ALS_FLAGS_LIGHT			BIT(7)
+#define IQS621_ALS_FLAGS_RANGE			GENMASK(3, 0)
+
+#define IQS621_ALS_UI_OUT			0x17
+
+#define IQS621_ALS_THRESH_DARK			0x80
+#define IQS621_ALS_THRESH_LIGHT			0x81
+
+#define IQS622_IR_RANGE				0x15
+#define IQS622_IR_FLAGS				0x16
+#define IQS622_IR_FLAGS_TOUCH			BIT(1)
+#define IQS622_IR_FLAGS_PROX			BIT(0)
+
+#define IQS622_IR_UI_OUT			0x17
+
+#define IQS622_IR_THRESH_PROX			0x91
+#define IQS622_IR_THRESH_TOUCH			0x92
+
+struct iqs621_als_private {
+	struct iqs62x_core *iqs62x;
+	struct iio_dev *indio_dev;
+	struct notifier_block notifier;
+	struct mutex lock;
+	bool light_en;
+	bool range_en;
+	bool prox_en;
+	u8 als_flags;
+	u8 ir_flags_mask;
+	u8 ir_flags;
+	u8 thresh_light;
+	u8 thresh_dark;
+	u8 thresh_prox;
+};
+
+static int iqs621_als_init(struct iqs621_als_private *iqs621_als)
+{
+	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
+	unsigned int event_mask = 0;
+	int ret;
+
+	switch (iqs621_als->ir_flags_mask) {
+	case IQS622_IR_FLAGS_TOUCH:
+		ret = regmap_write(iqs62x->regmap, IQS622_IR_THRESH_TOUCH,
+				   iqs621_als->thresh_prox);
+		break;
+
+	case IQS622_IR_FLAGS_PROX:
+		ret = regmap_write(iqs62x->regmap, IQS622_IR_THRESH_PROX,
+				   iqs621_als->thresh_prox);
+		break;
+
+	default:
+		ret = regmap_write(iqs62x->regmap, IQS621_ALS_THRESH_LIGHT,
+				   iqs621_als->thresh_light);
+		if (ret)
+			return ret;
+
+		ret = regmap_write(iqs62x->regmap, IQS621_ALS_THRESH_DARK,
+				   iqs621_als->thresh_dark);
+	}
+
+	if (ret)
+		return ret;
+
+	if (iqs621_als->light_en || iqs621_als->range_en)
+		event_mask |= iqs62x->dev_desc->als_mask;
+
+	if (iqs621_als->prox_en)
+		event_mask |= iqs62x->dev_desc->ir_mask;
+
+	return regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
+				  event_mask, 0);
+}
+
+static int iqs621_als_notifier(struct notifier_block *notifier,
+			       unsigned long event_flags, void *context)
+{
+	struct iqs62x_event_data *event_data = context;
+	struct iqs621_als_private *iqs621_als;
+	struct iio_dev *indio_dev;
+	bool light_new, light_old;
+	bool prox_new, prox_old;
+	u8 range_new, range_old;
+	s64 timestamp;
+	int ret;
+
+	iqs621_als = container_of(notifier, struct iqs621_als_private,
+				  notifier);
+	indio_dev = iqs621_als->indio_dev;
+	timestamp = iio_get_time_ns(indio_dev);
+
+	mutex_lock(&iqs621_als->lock);
+
+	if (event_flags & BIT(IQS62X_EVENT_SYS_RESET)) {
+		ret = iqs621_als_init(iqs621_als);
+		if (ret) {
+			dev_err(indio_dev->dev.parent,
+				"Failed to re-initialize device: %d\n", ret);
+			ret = NOTIFY_BAD;
+		} else {
+			ret = NOTIFY_OK;
+		}
+
+		goto err_mutex;
+	}
+
+	if (!iqs621_als->light_en && !iqs621_als->range_en &&
+	    !iqs621_als->prox_en) {
+		ret = NOTIFY_DONE;
+		goto err_mutex;
+	}
+
+	/* IQS621 only */
+	light_new = event_data->als_flags & IQS621_ALS_FLAGS_LIGHT;
+	light_old = iqs621_als->als_flags & IQS621_ALS_FLAGS_LIGHT;
+
+	if (iqs621_als->light_en && light_new && !light_old)
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
+						    IIO_EV_TYPE_THRESH,
+						    IIO_EV_DIR_RISING),
+			       timestamp);
+	else if (iqs621_als->light_en && !light_new && light_old)
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
+						    IIO_EV_TYPE_THRESH,
+						    IIO_EV_DIR_FALLING),
+			       timestamp);
+
+	/* IQS621 and IQS622 */
+	range_new = event_data->als_flags & IQS621_ALS_FLAGS_RANGE;
+	range_old = iqs621_als->als_flags & IQS621_ALS_FLAGS_RANGE;
+
+	if (iqs621_als->range_en && (range_new > range_old))
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
+						    IIO_EV_TYPE_CHANGE,
+						    IIO_EV_DIR_RISING),
+			       timestamp);
+	else if (iqs621_als->range_en && (range_new < range_old))
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0,
+						    IIO_EV_TYPE_CHANGE,
+						    IIO_EV_DIR_FALLING),
+			       timestamp);
+
+	/* IQS622 only */
+	prox_new = event_data->ir_flags & iqs621_als->ir_flags_mask;
+	prox_old = iqs621_als->ir_flags & iqs621_als->ir_flags_mask;
+
+	if (iqs621_als->prox_en && prox_new && !prox_old)
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
+						    IIO_EV_TYPE_THRESH,
+						    IIO_EV_DIR_RISING),
+			       timestamp);
+	else if (iqs621_als->prox_en && !prox_new && prox_old)
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
+						    IIO_EV_TYPE_THRESH,
+						    IIO_EV_DIR_FALLING),
+			       timestamp);
+
+	iqs621_als->als_flags = event_data->als_flags;
+	iqs621_als->ir_flags = event_data->ir_flags;
+	ret = NOTIFY_OK;
+
+err_mutex:
+	mutex_unlock(&iqs621_als->lock);
+
+	return ret;
+}
+
+static void iqs621_als_notifier_unregister(void *context)
+{
+	struct iqs621_als_private *iqs621_als = context;
+	struct iio_dev *indio_dev = iqs621_als->indio_dev;
+	int ret;
+
+	ret = blocking_notifier_chain_unregister(&iqs621_als->iqs62x->nh,
+						 &iqs621_als->notifier);
+	if (ret)
+		dev_err(indio_dev->dev.parent,
+			"Failed to unregister notifier: %d\n", ret);
+}
+
+static int iqs621_als_read_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val, int *val2, long mask)
+{
+	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
+	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
+	int ret;
+	__le16 val_buf;
+
+	switch (chan->type) {
+	case IIO_INTENSITY:
+		ret = regmap_read(iqs62x->regmap, chan->address, val);
+		if (ret)
+			return ret;
+
+		*val &= IQS621_ALS_FLAGS_RANGE;
+		return IIO_VAL_INT;
+
+	case IIO_PROXIMITY:
+	case IIO_LIGHT:
+		ret = regmap_raw_read(iqs62x->regmap, chan->address, &val_buf,
+				      sizeof(val_buf));
+		if (ret)
+			return ret;
+
+		*val = le16_to_cpu(val_buf);
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int iqs621_als_read_event_config(struct iio_dev *indio_dev,
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir)
+{
+	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&iqs621_als->lock);
+
+	switch (chan->type) {
+	case IIO_LIGHT:
+		ret = iqs621_als->light_en;
+		break;
+
+	case IIO_INTENSITY:
+		ret = iqs621_als->range_en;
+		break;
+
+	case IIO_PROXIMITY:
+		ret = iqs621_als->prox_en;
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	mutex_unlock(&iqs621_als->lock);
+
+	return ret;
+}
+
+static int iqs621_als_write_event_config(struct iio_dev *indio_dev,
+					 const struct iio_chan_spec *chan,
+					 enum iio_event_type type,
+					 enum iio_event_direction dir,
+					 int state)
+{
+	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
+	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
+	unsigned int val;
+	int ret;
+
+	mutex_lock(&iqs621_als->lock);
+
+	ret = regmap_read(iqs62x->regmap, iqs62x->dev_desc->als_flags, &val);
+	if (ret)
+		goto err_mutex;
+	iqs621_als->als_flags = val;
+
+	switch (chan->type) {
+	case IIO_LIGHT:
+		ret = regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
+					 iqs62x->dev_desc->als_mask,
+					 iqs621_als->range_en || state ? 0 :
+									 0xFF);
+		if (!ret)
+			iqs621_als->light_en = state;
+		break;
+
+	case IIO_INTENSITY:
+		ret = regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
+					 iqs62x->dev_desc->als_mask,
+					 iqs621_als->light_en || state ? 0 :
+									 0xFF);
+		if (!ret)
+			iqs621_als->range_en = state;
+		break;
+
+	case IIO_PROXIMITY:
+		ret = regmap_read(iqs62x->regmap, IQS622_IR_FLAGS, &val);
+		if (ret)
+			goto err_mutex;
+		iqs621_als->ir_flags = val;
+
+		ret = regmap_update_bits(iqs62x->regmap, IQS620_GLBL_EVENT_MASK,
+					 iqs62x->dev_desc->ir_mask,
+					 state ? 0 : 0xFF);
+		if (!ret)
+			iqs621_als->prox_en = state;
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+err_mutex:
+	mutex_unlock(&iqs621_als->lock);
+
+	return ret;
+}
+
+static int iqs621_als_read_event_value(struct iio_dev *indio_dev,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_type type,
+				       enum iio_event_direction dir,
+				       enum iio_event_info info,
+				       int *val, int *val2)
+{
+	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
+	int ret = IIO_VAL_INT;
+
+	mutex_lock(&iqs621_als->lock);
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		*val = iqs621_als->thresh_light * 16;
+		break;
+
+	case IIO_EV_DIR_FALLING:
+		*val = iqs621_als->thresh_dark * 4;
+		break;
+
+	case IIO_EV_DIR_EITHER:
+		if (iqs621_als->ir_flags_mask == IQS622_IR_FLAGS_TOUCH)
+			*val = iqs621_als->thresh_prox * 4;
+		else
+			*val = iqs621_als->thresh_prox;
+		break;
+
+	default:
+		ret = -EINVAL;
+	}
+
+	mutex_unlock(&iqs621_als->lock);
+
+	return ret;
+}
+
+static int iqs621_als_write_event_value(struct iio_dev *indio_dev,
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir,
+					enum iio_event_info info,
+					int val, int val2)
+{
+	struct iqs621_als_private *iqs621_als = iio_priv(indio_dev);
+	struct iqs62x_core *iqs62x = iqs621_als->iqs62x;
+	unsigned int thresh_reg, thresh_val;
+	u8 ir_flags_mask, *thresh_cache;
+	int ret = -EINVAL;
+
+	mutex_lock(&iqs621_als->lock);
+
+	switch (dir) {
+	case IIO_EV_DIR_RISING:
+		thresh_reg = IQS621_ALS_THRESH_LIGHT;
+		thresh_val = val / 16;
+
+		thresh_cache = &iqs621_als->thresh_light;
+		ir_flags_mask = 0;
+		break;
+
+	case IIO_EV_DIR_FALLING:
+		thresh_reg = IQS621_ALS_THRESH_DARK;
+		thresh_val = val / 4;
+
+		thresh_cache = &iqs621_als->thresh_dark;
+		ir_flags_mask = 0;
+		break;
+
+	case IIO_EV_DIR_EITHER:
+		/*
+		 * The IQS622 supports two detection thresholds, both measured
+		 * in the same arbitrary units reported by read_raw: proximity
+		 * (0 through 255 in steps of 1), and touch (0 through 1020 in
+		 * steps of 4).
+		 *
+		 * Based on the single detection threshold chosen by the user,
+		 * select the hardware threshold that gives the best trade-off
+		 * between range and resolution.
+		 *
+		 * By default, the close-range (but coarse) touch threshold is
+		 * chosen during probe.
+		 */
+		switch (val) {
+		case 0 ... 255:
+			thresh_reg = IQS622_IR_THRESH_PROX;
+			thresh_val = val;
+
+			ir_flags_mask = IQS622_IR_FLAGS_PROX;
+			break;
+
+		case 256 ... 1020:
+			thresh_reg = IQS622_IR_THRESH_TOUCH;
+			thresh_val = val / 4;
+
+			ir_flags_mask = IQS622_IR_FLAGS_TOUCH;
+			break;
+
+		default:
+			goto err_mutex;
+		}
+
+		thresh_cache = &iqs621_als->thresh_prox;
+		break;
+
+	default:
+		goto err_mutex;
+	}
+
+	if (thresh_val > 0xFF)
+		goto err_mutex;
+
+	ret = regmap_write(iqs62x->regmap, thresh_reg, thresh_val);
+	if (ret)
+		goto err_mutex;
+
+	*thresh_cache = thresh_val;
+	iqs621_als->ir_flags_mask = ir_flags_mask;
+
+err_mutex:
+	mutex_unlock(&iqs621_als->lock);
+
+	return ret;
+}
+
+static const struct iio_info iqs621_als_info = {
+	.read_raw = &iqs621_als_read_raw,
+	.read_event_config = iqs621_als_read_event_config,
+	.write_event_config = iqs621_als_write_event_config,
+	.read_event_value = iqs621_als_read_event_value,
+	.write_event_value = iqs621_als_write_event_value,
+};
+
+static const struct iio_event_spec iqs621_als_range_events[] = {
+	{
+		.type = IIO_EV_TYPE_CHANGE,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_event_spec iqs621_als_light_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
+static const struct iio_chan_spec iqs621_als_channels[] = {
+	{
+		.type = IIO_INTENSITY,
+		.address = IQS621_ALS_FLAGS,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.event_spec = iqs621_als_range_events,
+		.num_event_specs = ARRAY_SIZE(iqs621_als_range_events),
+	},
+	{
+		.type = IIO_LIGHT,
+		.address = IQS621_ALS_UI_OUT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.event_spec = iqs621_als_light_events,
+		.num_event_specs = ARRAY_SIZE(iqs621_als_light_events),
+	},
+};
+
+static const struct iio_event_spec iqs622_als_prox_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE) |
+				 BIT(IIO_EV_INFO_VALUE),
+	},
+};
+
+static const struct iio_chan_spec iqs622_als_channels[] = {
+	{
+		.type = IIO_INTENSITY,
+		.channel2 = IIO_MOD_LIGHT_BOTH,
+		.address = IQS622_ALS_FLAGS,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.event_spec = iqs621_als_range_events,
+		.num_event_specs = ARRAY_SIZE(iqs621_als_range_events),
+		.modified = true,
+	},
+	{
+		.type = IIO_INTENSITY,
+		.channel2 = IIO_MOD_LIGHT_IR,
+		.address = IQS622_IR_RANGE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.modified = true,
+	},
+	{
+		.type = IIO_PROXIMITY,
+		.address = IQS622_IR_UI_OUT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.event_spec = iqs622_als_prox_events,
+		.num_event_specs = ARRAY_SIZE(iqs622_als_prox_events),
+	},
+};
+
+static int iqs621_als_probe(struct platform_device *pdev)
+{
+	struct iqs62x_core *iqs62x = dev_get_drvdata(pdev->dev.parent);
+	struct iqs621_als_private *iqs621_als;
+	struct iio_dev *indio_dev;
+	unsigned int val;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*iqs621_als));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	iqs621_als = iio_priv(indio_dev);
+	iqs621_als->iqs62x = iqs62x;
+	iqs621_als->indio_dev = indio_dev;
+
+	if (iqs62x->dev_desc->prod_num == IQS622_PROD_NUM) {
+		ret = regmap_read(iqs62x->regmap, IQS622_IR_THRESH_TOUCH,
+				  &val);
+		if (ret)
+			return ret;
+		iqs621_als->thresh_prox = val;
+		iqs621_als->ir_flags_mask = IQS622_IR_FLAGS_TOUCH;
+
+		indio_dev->channels = iqs622_als_channels;
+		indio_dev->num_channels = ARRAY_SIZE(iqs622_als_channels);
+	} else {
+		ret = regmap_read(iqs62x->regmap, IQS621_ALS_THRESH_LIGHT,
+				  &val);
+		if (ret)
+			return ret;
+		iqs621_als->thresh_light = val;
+
+		ret = regmap_read(iqs62x->regmap, IQS621_ALS_THRESH_DARK,
+				  &val);
+		if (ret)
+			return ret;
+		iqs621_als->thresh_dark = val;
+
+		indio_dev->channels = iqs621_als_channels;
+		indio_dev->num_channels = ARRAY_SIZE(iqs621_als_channels);
+	}
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->name = iqs62x->dev_desc->dev_name;
+	indio_dev->info = &iqs621_als_info;
+
+	mutex_init(&iqs621_als->lock);
+
+	iqs621_als->notifier.notifier_call = iqs621_als_notifier;
+	ret = blocking_notifier_chain_register(&iqs621_als->iqs62x->nh,
+					       &iqs621_als->notifier);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register notifier: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       iqs621_als_notifier_unregister,
+				       iqs621_als);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&pdev->dev, indio_dev);
+}
+
+static struct platform_driver iqs621_als_platform_driver = {
+	.driver = {
+		.name = "iqs621-als",
+	},
+	.probe = iqs621_als_probe,
+};
+module_platform_driver(iqs621_als_platform_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS621/622 Ambient Light Sensors");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:iqs621-als");
diff --git a/drivers/iio/light/isl29018.c b/drivers/iio/light/isl29018.c
index 805a74f08ad1..b36f8b7ca68e 100644
--- a/drivers/iio/light/isl29018.c
+++ b/drivers/iio/light/isl29018.c
@@ -746,12 +746,9 @@ static int isl29018_probe(struct i2c_client *client,
 	chip->suspended = false;
 
 	chip->vcc_reg = devm_regulator_get(&client->dev, "vcc");
-	if (IS_ERR(chip->vcc_reg)) {
-		err = PTR_ERR(chip->vcc_reg);
-		if (err != -EPROBE_DEFER)
-			dev_err(&client->dev, "failed to get VCC regulator!\n");
-		return err;
-	}
+	if (IS_ERR(chip->vcc_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(chip->vcc_reg),
+				     "failed to get VCC regulator!\n");
 
 	err = regulator_enable(chip->vcc_reg);
 	if (err) {
@@ -782,13 +779,11 @@ static int isl29018_probe(struct i2c_client *client,
 	indio_dev->channels = isl29018_chip_info_tbl[dev_id].channels;
 	indio_dev->num_channels = isl29018_chip_info_tbl[dev_id].num_channels;
 	indio_dev->name = name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int isl29018_suspend(struct device *dev)
 {
 	struct isl29018_chip *chip = iio_priv(dev_get_drvdata(dev));
@@ -834,11 +829,8 @@ static int isl29018_resume(struct device *dev)
 	return err;
 }
 
-static SIMPLE_DEV_PM_OPS(isl29018_pm_ops, isl29018_suspend, isl29018_resume);
-#define ISL29018_PM_OPS (&isl29018_pm_ops)
-#else
-#define ISL29018_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(isl29018_pm_ops, isl29018_suspend,
+				isl29018_resume);
 
 #ifdef CONFIG_ACPI
 static const struct acpi_device_id isl29018_acpi_match[] = {
@@ -870,7 +862,7 @@ static struct i2c_driver isl29018_driver = {
 	.driver	 = {
 			.name = "isl29018",
 			.acpi_match_table = ACPI_PTR(isl29018_acpi_match),
-			.pm = ISL29018_PM_OPS,
+			.pm = pm_sleep_ptr(&isl29018_pm_ops),
 			.of_match_table = isl29018_of_match,
 		    },
 	.probe	 = isl29018_probe,
diff --git a/drivers/iio/light/isl29028.c b/drivers/iio/light/isl29028.c
index 4d220c835c75..32d58e18f26d 100644
--- a/drivers/iio/light/isl29028.c
+++ b/drivers/iio/light/isl29028.c
@@ -339,9 +339,7 @@ static int isl29028_set_pm_runtime_busy(struct isl29028_chip *chip, bool on)
 	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(dev);
+		ret = pm_runtime_resume_and_get(dev);
 	} else {
 		pm_runtime_mark_last_busy(dev);
 		ret = pm_runtime_put_autosuspend(dev);
@@ -620,7 +618,6 @@ static int isl29028_probe(struct i2c_client *client,
 	indio_dev->channels = isl29028_channels;
 	indio_dev->num_channels = ARRAY_SIZE(isl29028_channels);
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	pm_runtime_enable(&client->dev);
@@ -628,7 +625,7 @@ static int isl29028_probe(struct i2c_client *client,
 					 ISL29028_POWER_OFF_DELAY_MS);
 	pm_runtime_use_autosuspend(&client->dev);
 
-	ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
+	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(&client->dev,
 			"%s(): iio registration failed with error %d\n",
@@ -639,7 +636,7 @@ static int isl29028_probe(struct i2c_client *client,
 	return 0;
 }
 
-static int isl29028_remove(struct i2c_client *client)
+static void isl29028_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct isl29028_chip *chip = iio_priv(indio_dev);
@@ -648,12 +645,11 @@ static int isl29028_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
-	return isl29028_clear_configure_reg(chip);
+	isl29028_clear_configure_reg(chip);
 }
 
-static int __maybe_unused isl29028_suspend(struct device *dev)
+static int isl29028_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct isl29028_chip *chip = iio_priv(indio_dev);
@@ -668,7 +664,7 @@ static int __maybe_unused isl29028_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused isl29028_resume(struct device *dev)
+static int isl29028_resume(struct device *dev)
 {
 	/**
 	 * The specific component (ALS/IR or proximity) will enable itself as
@@ -678,11 +674,8 @@ static int __maybe_unused isl29028_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops isl29028_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(isl29028_suspend, isl29028_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(isl29028_pm_ops, isl29028_suspend,
+				 isl29028_resume, NULL);
 
 static const struct i2c_device_id isl29028_id[] = {
 	{"isl29028", 0},
@@ -702,7 +695,7 @@ MODULE_DEVICE_TABLE(of, isl29028_of_match);
 static struct i2c_driver isl29028_driver = {
 	.driver  = {
 		.name = "isl29028",
-		.pm = &isl29028_pm_ops,
+		.pm = pm_ptr(&isl29028_pm_ops),
 		.of_match_table = isl29028_of_match,
 	},
 	.probe	 = isl29028_probe,
diff --git a/drivers/iio/light/isl29125.c b/drivers/iio/light/isl29125.c
index e37894f0ae0b..c199e63cce82 100644
--- a/drivers/iio/light/isl29125.c
+++ b/drivers/iio/light/isl29125.c
@@ -51,7 +51,11 @@
 struct isl29125_data {
 	struct i2c_client *client;
 	u8 conf1;
-	u16 buffer[8]; /* 3x 16-bit, padding, 8 bytes timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u16 chans[3];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 #define ISL29125_CHANNEL(_color, _si) { \
@@ -184,10 +188,10 @@ static irqreturn_t isl29125_trigger_handler(int irq, void *p)
 		if (ret < 0)
 			goto done;
 
-		data->buffer[j++] = ret;
+		data->scan.chans[j++] = ret;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 		iio_get_time_ns(indio_dev));
 
 done:
@@ -213,7 +217,7 @@ static const struct iio_info isl29125_info = {
 	.attrs = &isl29125_attribute_group,
 };
 
-static int isl29125_buffer_preenable(struct iio_dev *indio_dev)
+static int isl29125_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct isl29125_data *data = iio_priv(indio_dev);
 
@@ -225,11 +229,6 @@ static int isl29125_buffer_preenable(struct iio_dev *indio_dev)
 static int isl29125_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct isl29125_data *data = iio_priv(indio_dev);
-	int ret;
-
-	ret = iio_triggered_buffer_predisable(indio_dev);
-	if (ret < 0)
-		return ret;
 
 	data->conf1 &= ~ISL29125_MODE_MASK;
 	data->conf1 |= ISL29125_MODE_PD;
@@ -238,8 +237,7 @@ static int isl29125_buffer_predisable(struct iio_dev *indio_dev)
 }
 
 static const struct iio_buffer_setup_ops isl29125_buffer_setup_ops = {
-	.preenable = isl29125_buffer_preenable,
-	.postenable = &iio_triggered_buffer_postenable,
+	.postenable = isl29125_buffer_postenable,
 	.predisable = isl29125_buffer_predisable,
 };
 
@@ -258,7 +256,6 @@ static int isl29125_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &isl29125_info;
 	indio_dev->name = ISL29125_DRV_NAME;
 	indio_dev->channels = isl29125_channels;
@@ -303,18 +300,15 @@ static int isl29125_powerdown(struct isl29125_data *data)
 		(data->conf1 & ~ISL29125_MODE_MASK) | ISL29125_MODE_PD);
 }
 
-static int isl29125_remove(struct i2c_client *client)
+static void isl29125_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	isl29125_powerdown(iio_priv(indio_dev));
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int isl29125_suspend(struct device *dev)
 {
 	struct isl29125_data *data = iio_priv(i2c_get_clientdata(
@@ -329,9 +323,9 @@ static int isl29125_resume(struct device *dev)
 	return i2c_smbus_write_byte_data(data->client, ISL29125_CONF1,
 		data->conf1);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(isl29125_pm_ops, isl29125_suspend, isl29125_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(isl29125_pm_ops, isl29125_suspend,
+				isl29125_resume);
 
 static const struct i2c_device_id isl29125_id[] = {
 	{ "isl29125", 0 },
@@ -342,7 +336,7 @@ MODULE_DEVICE_TABLE(i2c, isl29125_id);
 static struct i2c_driver isl29125_driver = {
 	.driver = {
 		.name	= ISL29125_DRV_NAME,
-		.pm	= &isl29125_pm_ops,
+		.pm	= pm_sleep_ptr(&isl29125_pm_ops),
 	},
 	.probe		= isl29125_probe,
 	.remove		= isl29125_remove,
diff --git a/drivers/iio/light/jsa1212.c b/drivers/iio/light/jsa1212.c
index 13deeebe37eb..57ce6d75966c 100644
--- a/drivers/iio/light/jsa1212.c
+++ b/drivers/iio/light/jsa1212.c
@@ -338,7 +338,6 @@ static int jsa1212_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = jsa1212_channels;
 	indio_dev->num_channels = ARRAY_SIZE(jsa1212_channels);
 	indio_dev->name = JSA1212_DRIVER_NAME;
@@ -374,17 +373,16 @@ static int jsa1212_power_off(struct jsa1212_data *data)
 	return ret;
 }
 
-static int jsa1212_remove(struct i2c_client *client)
+static void jsa1212_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct jsa1212_data *data = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 
-	return jsa1212_power_off(data);
+	jsa1212_power_off(data);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int jsa1212_suspend(struct device *dev)
 {
 	struct jsa1212_data *data;
@@ -422,12 +420,8 @@ unlock_and_ret:
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(jsa1212_pm_ops, jsa1212_suspend, jsa1212_resume);
-
-#define JSA1212_PM_OPS (&jsa1212_pm_ops)
-#else
-#define JSA1212_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(jsa1212_pm_ops, jsa1212_suspend,
+				jsa1212_resume);
 
 static const struct acpi_device_id jsa1212_acpi_match[] = {
 	{"JSA1212", 0},
@@ -444,7 +438,7 @@ MODULE_DEVICE_TABLE(i2c, jsa1212_id);
 static struct i2c_driver jsa1212_driver = {
 	.driver = {
 		.name	= JSA1212_DRIVER_NAME,
-		.pm	= JSA1212_PM_OPS,
+		.pm	= pm_sleep_ptr(&jsa1212_pm_ops),
 		.acpi_match_table = ACPI_PTR(jsa1212_acpi_match),
 	},
 	.probe		= jsa1212_probe,
diff --git a/drivers/iio/light/lm3533-als.c b/drivers/iio/light/lm3533-als.c
index bc196c212881..827bc25269e9 100644
--- a/drivers/iio/light/lm3533-als.c
+++ b/drivers/iio/light/lm3533-als.c
@@ -417,7 +417,7 @@ static ssize_t show_thresh_either_en(struct device *dev,
 		enable = 0;
 	}
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n", enable);
+	return sysfs_emit(buf, "%u\n", enable);
 }
 
 static ssize_t store_thresh_either_en(struct device *dev,
@@ -474,7 +474,7 @@ static ssize_t show_zone(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n", zone);
+	return sysfs_emit(buf, "%u\n", zone);
 }
 
 enum lm3533_als_attribute_type {
@@ -530,7 +530,7 @@ static ssize_t show_als_attr(struct device *dev,
 	if (ret)
 		return ret;
 
-	return scnprintf(buf, PAGE_SIZE, "%u\n", val);
+	return sysfs_emit(buf, "%u\n", val);
 }
 
 static ssize_t store_als_attr(struct device *dev,
@@ -852,7 +852,7 @@ static int lm3533_als_probe(struct platform_device *pdev)
 	indio_dev->channels = lm3533_als_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lm3533_als_channels);
 	indio_dev->name = dev_name(&pdev->dev);
-	indio_dev->dev.parent = pdev->dev.parent;
+	iio_device_set_parent(indio_dev, pdev->dev.parent);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	als = iio_priv(indio_dev);
diff --git a/drivers/iio/light/ltr501.c b/drivers/iio/light/ltr501.c
index 71f99d2a22c1..74a1ccda8b9c 100644
--- a/drivers/iio/light/ltr501.c
+++ b/drivers/iio/light/ltr501.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * ltr501.c - Support for Lite-On LTR501 ambient light and proximity sensor
+ * Support for Lite-On LTR501 and similar ambient light and proximity sensors.
  *
  * Copyright 2014 Peter Meerwald <pmeerw@pmeerw.net>
  *
@@ -15,6 +15,7 @@
 #include <linux/delay.h>
 #include <linux/regmap.h>
 #include <linux/acpi.h>
+#include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/events.h>
@@ -32,9 +33,12 @@
 #define LTR501_PART_ID 0x86
 #define LTR501_MANUFAC_ID 0x87
 #define LTR501_ALS_DATA1 0x88 /* 16-bit, little endian */
+#define LTR501_ALS_DATA1_UPPER 0x89 /* upper 8 bits of LTR501_ALS_DATA1 */
 #define LTR501_ALS_DATA0 0x8a /* 16-bit, little endian */
+#define LTR501_ALS_DATA0_UPPER 0x8b /* upper 8 bits of LTR501_ALS_DATA0 */
 #define LTR501_ALS_PS_STATUS 0x8c
 #define LTR501_PS_DATA 0x8d /* 16-bit, little endian */
+#define LTR501_PS_DATA_UPPER 0x8e /* upper 8 bits of LTR501_PS_DATA */
 #define LTR501_INTR 0x8f /* output mode, polarity, mode */
 #define LTR501_PS_THRESH_UP 0x90 /* 11 bit, ps upper threshold */
 #define LTR501_PS_THRESH_LOW 0x92 /* 11 bit, ps lower threshold */
@@ -94,6 +98,7 @@ enum {
 	ltr501 = 0,
 	ltr559,
 	ltr301,
+	ltr303,
 };
 
 struct ltr501_gain {
@@ -101,12 +106,12 @@ struct ltr501_gain {
 	int uscale;
 };
 
-static struct ltr501_gain ltr501_als_gain_tbl[] = {
+static const struct ltr501_gain ltr501_als_gain_tbl[] = {
 	{1, 0},
 	{0, 5000},
 };
 
-static struct ltr501_gain ltr559_als_gain_tbl[] = {
+static const struct ltr501_gain ltr559_als_gain_tbl[] = {
 	{1, 0},
 	{0, 500000},
 	{0, 250000},
@@ -117,14 +122,14 @@ static struct ltr501_gain ltr559_als_gain_tbl[] = {
 	{0, 10000},
 };
 
-static struct ltr501_gain ltr501_ps_gain_tbl[] = {
+static const struct ltr501_gain ltr501_ps_gain_tbl[] = {
 	{1, 0},
 	{0, 250000},
 	{0, 125000},
 	{0, 62500},
 };
 
-static struct ltr501_gain ltr559_ps_gain_tbl[] = {
+static const struct ltr501_gain ltr559_ps_gain_tbl[] = {
 	{0, 62500}, /* x16 gain */
 	{0, 31250}, /* x32 gain */
 	{0, 15625}, /* bits X1 are for x64 gain */
@@ -133,9 +138,9 @@ static struct ltr501_gain ltr559_ps_gain_tbl[] = {
 
 struct ltr501_chip_info {
 	u8 partid;
-	struct ltr501_gain *als_gain;
+	const struct ltr501_gain *als_gain;
 	int als_gain_tbl_size;
-	struct ltr501_gain *ps_gain;
+	const struct ltr501_gain *ps_gain;
 	int ps_gain_tbl_size;
 	u8 als_mode_active;
 	u8 als_gain_mask;
@@ -148,8 +153,9 @@ struct ltr501_chip_info {
 
 struct ltr501_data {
 	struct i2c_client *client;
+	struct regulator_bulk_data regulators[2];
 	struct mutex lock_als, lock_ps;
-	struct ltr501_chip_info *chip_info;
+	const struct ltr501_chip_info *chip_info;
 	u8 als_contr, ps_contr;
 	int als_period, ps_period; /* period in micro seconds */
 	struct regmap *regmap;
@@ -160,6 +166,7 @@ struct ltr501_data {
 	struct regmap_field *reg_ps_rate;
 	struct regmap_field *reg_als_prst;
 	struct regmap_field *reg_ps_prst;
+	uint32_t near_level;
 };
 
 static const struct ltr501_samp_table ltr501_als_samp_table[] = {
@@ -192,7 +199,7 @@ static int ltr501_match_samp_freq(const struct ltr501_samp_table *tab,
 	return -EINVAL;
 }
 
-static int ltr501_als_read_samp_freq(struct ltr501_data *data,
+static int ltr501_als_read_samp_freq(const struct ltr501_data *data,
 				     int *val, int *val2)
 {
 	int ret, i;
@@ -210,7 +217,7 @@ static int ltr501_als_read_samp_freq(struct ltr501_data *data,
 	return IIO_VAL_INT_PLUS_MICRO;
 }
 
-static int ltr501_ps_read_samp_freq(struct ltr501_data *data,
+static int ltr501_ps_read_samp_freq(const struct ltr501_data *data,
 				    int *val, int *val2)
 {
 	int ret, i;
@@ -266,7 +273,7 @@ static int ltr501_ps_write_samp_freq(struct ltr501_data *data,
 	return ret;
 }
 
-static int ltr501_als_read_samp_period(struct ltr501_data *data, int *val)
+static int ltr501_als_read_samp_period(const struct ltr501_data *data, int *val)
 {
 	int ret, i;
 
@@ -282,7 +289,7 @@ static int ltr501_als_read_samp_period(struct ltr501_data *data, int *val)
 	return IIO_VAL_INT;
 }
 
-static int ltr501_ps_read_samp_period(struct ltr501_data *data, int *val)
+static int ltr501_ps_read_samp_period(const struct ltr501_data *data, int *val)
 {
 	int ret, i;
 
@@ -321,7 +328,7 @@ static unsigned long ltr501_calculate_lux(u16 vis_data, u16 ir_data)
 	return lux / 1000;
 }
 
-static int ltr501_drdy(struct ltr501_data *data, u8 drdy_mask)
+static int ltr501_drdy(const struct ltr501_data *data, u8 drdy_mask)
 {
 	int tries = 100;
 	int ret, status;
@@ -373,7 +380,8 @@ static int ltr501_set_it_time(struct ltr501_data *data, int it)
 }
 
 /* read int time in micro seconds */
-static int ltr501_read_it_time(struct ltr501_data *data, int *val, int *val2)
+static int ltr501_read_it_time(const struct ltr501_data *data,
+			       int *val, int *val2)
 {
 	int ret, index;
 
@@ -391,7 +399,7 @@ static int ltr501_read_it_time(struct ltr501_data *data, int *val, int *val2)
 	return IIO_VAL_INT_PLUS_MICRO;
 }
 
-static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2])
+static int ltr501_read_als(const struct ltr501_data *data, __le16 buf[2])
 {
 	int ret;
 
@@ -403,23 +411,24 @@ static int ltr501_read_als(struct ltr501_data *data, __le16 buf[2])
 				buf, 2 * sizeof(__le16));
 }
 
-static int ltr501_read_ps(struct ltr501_data *data)
+static int ltr501_read_ps(const struct ltr501_data *data)
 {
-	int ret, status;
+	__le16 status;
+	int ret;
 
 	ret = ltr501_drdy(data, LTR501_STATUS_PS_RDY);
 	if (ret < 0)
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, LTR501_PS_DATA,
-			       &status, 2);
+			       &status, sizeof(status));
 	if (ret < 0)
 		return ret;
 
-	return status;
+	return le16_to_cpu(status);
 }
 
-static int ltr501_read_intr_prst(struct ltr501_data *data,
+static int ltr501_read_intr_prst(const struct ltr501_data *data,
 				 enum iio_chan_type type,
 				 int *val2)
 {
@@ -517,6 +526,25 @@ static int ltr501_write_intr_prst(struct ltr501_data *data,
 	return -EINVAL;
 }
 
+static ssize_t ltr501_read_near_level(struct iio_dev *indio_dev,
+				      uintptr_t priv,
+				      const struct iio_chan_spec *chan,
+				      char *buf)
+{
+	struct ltr501_data *data = iio_priv(indio_dev);
+
+	return sprintf(buf, "%u\n", data->near_level);
+}
+
+static const struct iio_chan_spec_ext_info ltr501_ext_info[] = {
+	{
+		.name = "nearlevel",
+		.shared = IIO_SEPARATE,
+		.read = ltr501_read_near_level,
+	},
+	{ /* sentinel */ }
+};
+
 static const struct iio_event_spec ltr501_als_event_spec[] = {
 	{
 		.type = IIO_EV_TYPE_THRESH,
@@ -601,6 +629,7 @@ static const struct iio_chan_spec ltr501_channels[] = {
 		},
 		.event_spec = ltr501_pxs_event_spec,
 		.num_event_specs = ARRAY_SIZE(ltr501_pxs_event_spec),
+		.ext_info = ltr501_ext_info,
 	},
 	IIO_CHAN_SOFT_TIMESTAMP(3),
 };
@@ -716,7 +745,7 @@ static int ltr501_read_raw(struct iio_dev *indio_dev,
 	return -EINVAL;
 }
 
-static int ltr501_get_gain_index(struct ltr501_gain *gain, int size,
+static int ltr501_get_gain_index(const struct ltr501_gain *gain, int size,
 				 int val, int val2)
 {
 	int i;
@@ -734,7 +763,7 @@ static int ltr501_write_raw(struct iio_dev *indio_dev,
 {
 	struct ltr501_data *data = iio_priv(indio_dev);
 	int i, ret, freq_val, freq_val2;
-	struct ltr501_chip_info *info = data->chip_info;
+	const struct ltr501_chip_info *info = data->chip_info;
 
 	ret = iio_device_claim_direct_mode(indio_dev);
 	if (ret)
@@ -848,14 +877,14 @@ static int ltr501_write_raw(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static int ltr501_read_thresh(struct iio_dev *indio_dev,
+static int ltr501_read_thresh(const struct iio_dev *indio_dev,
 			      const struct iio_chan_spec *chan,
 			      enum iio_event_type type,
 			      enum iio_event_direction dir,
 			      enum iio_event_info info,
 			      int *val, int *val2)
 {
-	struct ltr501_data *data = iio_priv(indio_dev);
+	const struct ltr501_data *data = iio_priv(indio_dev);
 	int ret, thresh_data;
 
 	switch (chan->type) {
@@ -1081,7 +1110,7 @@ static ssize_t ltr501_show_proximity_scale_avail(struct device *dev,
 						 char *buf)
 {
 	struct ltr501_data *data = iio_priv(dev_to_iio_dev(dev));
-	struct ltr501_chip_info *info = data->chip_info;
+	const struct ltr501_chip_info *info = data->chip_info;
 	ssize_t len = 0;
 	int i;
 
@@ -1103,7 +1132,7 @@ static ssize_t ltr501_show_intensity_scale_avail(struct device *dev,
 						 char *buf)
 {
 	struct ltr501_data *data = iio_priv(dev_to_iio_dev(dev));
-	struct ltr501_chip_info *info = data->chip_info;
+	const struct ltr501_chip_info *info = data->chip_info;
 	ssize_t len = 0;
 	int i;
 
@@ -1183,7 +1212,7 @@ static const struct iio_info ltr301_info = {
 	.write_event_config	= &ltr501_write_event_config,
 };
 
-static struct ltr501_chip_info ltr501_chip_info_tbl[] = {
+static const struct ltr501_chip_info ltr501_chip_info_tbl[] = {
 	[ltr501] = {
 		.partid = 0x08,
 		.als_gain = ltr501_als_gain_tbl,
@@ -1204,7 +1233,7 @@ static struct ltr501_chip_info ltr501_chip_info_tbl[] = {
 		.als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl),
 		.ps_gain = ltr559_ps_gain_tbl,
 		.ps_gain_tbl_size = ARRAY_SIZE(ltr559_ps_gain_tbl),
-		.als_mode_active = BIT(1),
+		.als_mode_active = BIT(0),
 		.als_gain_mask = BIT(2) | BIT(3) | BIT(4),
 		.als_gain_shift = 2,
 		.info = &ltr501_info,
@@ -1224,6 +1253,18 @@ static struct ltr501_chip_info ltr501_chip_info_tbl[] = {
 		.channels = ltr301_channels,
 		.no_channels = ARRAY_SIZE(ltr301_channels),
 	},
+	[ltr303] = {
+		.partid = 0x0A,
+		.als_gain = ltr559_als_gain_tbl,
+		.als_gain_tbl_size = ARRAY_SIZE(ltr559_als_gain_tbl),
+		.als_mode_active = BIT(0),
+		.als_gain_mask = BIT(2) | BIT(3) | BIT(4),
+		.als_gain_shift = 2,
+		.info = &ltr301_info,
+		.info_no_irq = &ltr301_info_no_irq,
+		.channels = ltr301_channels,
+		.no_channels = ARRAY_SIZE(ltr301_channels),
+	},
 };
 
 static int ltr501_write_contr(struct ltr501_data *data, u8 als_val, u8 ps_val)
@@ -1242,13 +1283,16 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ltr501_data *data = iio_priv(indio_dev);
-	u16 buf[8];
+	struct {
+		u16 channels[3];
+		s64 ts __aligned(8);
+	} scan;
 	__le16 als_buf[2];
 	u8 mask = 0;
 	int j = 0;
 	int ret, psdata;
 
-	memset(buf, 0, sizeof(buf));
+	memset(&scan, 0, sizeof(scan));
 
 	/* figure out which data needs to be ready */
 	if (test_bit(0, indio_dev->active_scan_mask) ||
@@ -1263,13 +1307,13 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
 
 	if (mask & LTR501_STATUS_ALS_RDY) {
 		ret = regmap_bulk_read(data->regmap, LTR501_ALS_DATA1,
-				       (u8 *)als_buf, sizeof(als_buf));
+				       als_buf, sizeof(als_buf));
 		if (ret < 0)
-			return ret;
+			goto done;
 		if (test_bit(0, indio_dev->active_scan_mask))
-			buf[j++] = le16_to_cpu(als_buf[1]);
+			scan.channels[j++] = le16_to_cpu(als_buf[1]);
 		if (test_bit(1, indio_dev->active_scan_mask))
-			buf[j++] = le16_to_cpu(als_buf[0]);
+			scan.channels[j++] = le16_to_cpu(als_buf[0]);
 	}
 
 	if (mask & LTR501_STATUS_PS_RDY) {
@@ -1277,10 +1321,10 @@ static irqreturn_t ltr501_trigger_handler(int irq, void *p)
 				       &psdata, 2);
 		if (ret < 0)
 			goto done;
-		buf[j++] = psdata & LTR501_PS_DATA_MASK;
+		scan.channels[j++] = psdata & LTR501_PS_DATA_MASK;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan,
 					   iio_get_time_ns(indio_dev));
 
 done:
@@ -1350,16 +1394,19 @@ static bool ltr501_is_volatile_reg(struct device *dev, unsigned int reg)
 {
 	switch (reg) {
 	case LTR501_ALS_DATA1:
+	case LTR501_ALS_DATA1_UPPER:
 	case LTR501_ALS_DATA0:
+	case LTR501_ALS_DATA0_UPPER:
 	case LTR501_ALS_PS_STATUS:
 	case LTR501_PS_DATA:
+	case LTR501_PS_DATA_UPPER:
 		return true;
 	default:
 		return false;
 	}
 }
 
-static struct regmap_config ltr501_regmap_config = {
+static const struct regmap_config ltr501_regmap_config = {
 	.name =  LTR501_REGMAP_NAME,
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -1368,6 +1415,13 @@ static struct regmap_config ltr501_regmap_config = {
 	.volatile_reg = ltr501_is_volatile_reg,
 };
 
+static void ltr501_disable_regulators(void *d)
+{
+	struct ltr501_data *data = d;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
+}
+
 static int ltr501_powerdown(struct ltr501_data *data)
 {
 	return ltr501_write_contr(data, data->als_contr &
@@ -1412,6 +1466,25 @@ static int ltr501_probe(struct i2c_client *client,
 	mutex_init(&data->lock_als);
 	mutex_init(&data->lock_ps);
 
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(&client->dev,
+				      ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(&client->dev, ret,
+				     "Failed to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev,
+				       ltr501_disable_regulators, data);
+	if (ret)
+		return ret;
+
 	data->reg_it = devm_regmap_field_alloc(&client->dev, regmap,
 					       reg_field_it);
 	if (IS_ERR(data->reg_it)) {
@@ -1479,7 +1552,10 @@ static int ltr501_probe(struct i2c_client *client,
 	if ((partid >> 4) != data->chip_info->partid)
 		return -ENODEV;
 
-	indio_dev->dev.parent = &client->dev;
+	if (device_property_read_u32(&client->dev, "proximity-near-level",
+				     &data->near_level))
+		data->near_level = 0;
+
 	indio_dev->info = data->chip_info->info;
 	indio_dev->channels = data->chip_info->channels;
 	indio_dev->num_channels = data->chip_info->no_channels;
@@ -1524,18 +1600,15 @@ powerdown_on_error:
 	return ret;
 }
 
-static int ltr501_remove(struct i2c_client *client)
+static void ltr501_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	ltr501_powerdown(iio_priv(indio_dev));
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int ltr501_suspend(struct device *dev)
 {
 	struct ltr501_data *data = iio_priv(i2c_get_clientdata(
@@ -1551,30 +1624,40 @@ static int ltr501_resume(struct device *dev)
 	return ltr501_write_contr(data, data->als_contr,
 		data->ps_contr);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(ltr501_pm_ops, ltr501_suspend, ltr501_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ltr501_pm_ops, ltr501_suspend, ltr501_resume);
 
 static const struct acpi_device_id ltr_acpi_match[] = {
-	{"LTER0501", ltr501},
-	{"LTER0559", ltr559},
-	{"LTER0301", ltr301},
+	{ "LTER0501", ltr501 },
+	{ "LTER0559", ltr559 },
+	{ "LTER0301", ltr301 },
 	{ },
 };
 MODULE_DEVICE_TABLE(acpi, ltr_acpi_match);
 
 static const struct i2c_device_id ltr501_id[] = {
-	{ "ltr501", ltr501},
-	{ "ltr559", ltr559},
-	{ "ltr301", ltr301},
+	{ "ltr501", ltr501 },
+	{ "ltr559", ltr559 },
+	{ "ltr301", ltr301 },
+	{ "ltr303", ltr303 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, ltr501_id);
 
+static const struct of_device_id ltr501_of_match[] = {
+	{ .compatible = "liteon,ltr501", },
+	{ .compatible = "liteon,ltr559", },
+	{ .compatible = "liteon,ltr301", },
+	{ .compatible = "liteon,ltr303", },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ltr501_of_match);
+
 static struct i2c_driver ltr501_driver = {
 	.driver = {
 		.name   = LTR501_DRV_NAME,
-		.pm	= &ltr501_pm_ops,
+		.of_match_table = ltr501_of_match,
+		.pm	= pm_sleep_ptr(&ltr501_pm_ops),
 		.acpi_match_table = ACPI_PTR(ltr_acpi_match),
 	},
 	.probe  = ltr501_probe,
diff --git a/drivers/iio/light/ltrf216a.c b/drivers/iio/light/ltrf216a.c
new file mode 100644
index 000000000000..4b8ef36b6912
--- /dev/null
+++ b/drivers/iio/light/ltrf216a.c
@@ -0,0 +1,550 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * LTRF216A Ambient Light Sensor
+ *
+ * Copyright (C) 2022 Collabora, Ltd.
+ * Author: Shreeya Patel <shreeya.patel@collabora.com>
+ *
+ * Copyright (C) 2021 Lite-On Technology Corp (Singapore)
+ * Author: Shi Zhigang <Zhigang.Shi@liteon.com>
+ *
+ * IIO driver for LTRF216A (7-bit I2C slave address 0x53).
+ */
+
+#include <linux/bitfield.h>
+#include <linux/bits.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/init.h>
+#include <linux/iopoll.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm.h>
+#include <linux/pm_runtime.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include <asm/unaligned.h>
+
+#define LTRF216A_ALS_RESET_MASK		BIT(4)
+#define LTRF216A_ALS_DATA_STATUS	BIT(3)
+#define LTRF216A_ALS_ENABLE_MASK	BIT(1)
+#define LTRF216A_MAIN_CTRL		0x00
+#define LTRF216A_ALS_MEAS_RES		0x04
+#define LTRF216A_ALS_GAIN		0x05
+#define LTRF216A_PART_ID		0x06
+#define LTRF216A_MAIN_STATUS		0x07
+#define LTRF216A_ALS_CLEAR_DATA_0	0x0a
+#define LTRF216A_ALS_CLEAR_DATA_1	0x0b
+#define LTRF216A_ALS_CLEAR_DATA_2	0x0c
+#define LTRF216A_ALS_DATA_0		0x0d
+#define LTRF216A_ALS_DATA_1		0x0e
+#define LTRF216A_ALS_DATA_2		0x0f
+#define LTRF216A_INT_CFG		0x19
+#define LTRF216A_INT_PST		0x1a
+#define LTRF216A_ALS_THRES_UP_0		0x21
+#define LTRF216A_ALS_THRES_UP_1		0x22
+#define LTRF216A_ALS_THRES_UP_2		0x23
+#define LTRF216A_ALS_THRES_LOW_0	0x24
+#define LTRF216A_ALS_THRES_LOW_1	0x25
+#define LTRF216A_ALS_THRES_LOW_2	0x26
+#define LTRF216A_ALS_READ_DATA_DELAY_US	20000
+
+static const int ltrf216a_int_time_available[][2] = {
+	{ 0, 400000 },
+	{ 0, 200000 },
+	{ 0, 100000 },
+	{ 0,  50000 },
+	{ 0,  25000 },
+};
+
+static const int ltrf216a_int_time_reg[][2] = {
+	{ 400, 0x03 },
+	{ 200, 0x13 },
+	{ 100, 0x22 },
+	{  50, 0x31 },
+	{  25, 0x40 },
+};
+
+/*
+ * Window Factor is needed when the device is under Window glass
+ * with coated tinted ink. This is to compensate for the light loss
+ * due to the lower transmission rate of the window glass and helps
+ * in calculating lux.
+ */
+#define LTRF216A_WIN_FAC	1
+
+struct ltrf216a_data {
+	struct regmap *regmap;
+	struct i2c_client *client;
+	u32 int_time;
+	u16 int_time_fac;
+	u8 als_gain_fac;
+	/*
+	 * Protects regmap accesses and makes sure integration time
+	 * remains constant during the measurement of lux.
+	 */
+	struct mutex lock;
+};
+
+static const struct iio_chan_spec ltrf216a_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_PROCESSED) |
+			BIT(IIO_CHAN_INFO_INT_TIME),
+		.info_mask_separate_available =
+			BIT(IIO_CHAN_INFO_INT_TIME),
+	},
+};
+
+static void ltrf216a_reset(struct iio_dev *indio_dev)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+
+	/* reset sensor, chip fails to respond to this, so ignore any errors */
+	regmap_write(data->regmap, LTRF216A_MAIN_CTRL, LTRF216A_ALS_RESET_MASK);
+
+	/* reset time */
+	usleep_range(1000, 2000);
+}
+
+static int ltrf216a_enable(struct iio_dev *indio_dev)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	struct device *dev = &data->client->dev;
+	int ret;
+
+	/* enable sensor */
+	ret = regmap_set_bits(data->regmap,
+			      LTRF216A_MAIN_CTRL, LTRF216A_ALS_ENABLE_MASK);
+	if (ret) {
+		dev_err(dev, "failed to enable sensor: %d\n", ret);
+		return ret;
+	}
+
+	/* sleep for one integration cycle after enabling the device */
+	msleep(ltrf216a_int_time_reg[0][0]);
+
+	return 0;
+}
+
+static int ltrf216a_disable(struct iio_dev *indio_dev)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	struct device *dev = &data->client->dev;
+	int ret;
+
+	ret = regmap_write(data->regmap, LTRF216A_MAIN_CTRL, 0);
+	if (ret)
+		dev_err(dev, "failed to disable sensor: %d\n", ret);
+
+	return ret;
+}
+
+static void ltrf216a_cleanup(void *data)
+{
+	struct iio_dev *indio_dev = data;
+
+	ltrf216a_disable(indio_dev);
+}
+
+static int ltrf216a_set_int_time(struct ltrf216a_data *data, int itime)
+{
+	struct device *dev = &data->client->dev;
+	unsigned int i;
+	u8 reg_val;
+	int ret;
+
+	for (i = 0; i < ARRAY_SIZE(ltrf216a_int_time_available); i++) {
+		if (ltrf216a_int_time_available[i][1] == itime)
+			break;
+	}
+	if (i == ARRAY_SIZE(ltrf216a_int_time_available))
+		return -EINVAL;
+
+	reg_val = ltrf216a_int_time_reg[i][1];
+
+	ret = regmap_write(data->regmap, LTRF216A_ALS_MEAS_RES, reg_val);
+	if (ret) {
+		dev_err(dev, "failed to set integration time: %d\n", ret);
+		return ret;
+	}
+
+	data->int_time_fac = ltrf216a_int_time_reg[i][0];
+	data->int_time = itime;
+
+	return 0;
+}
+
+static int ltrf216a_get_int_time(struct ltrf216a_data *data,
+				 int *val, int *val2)
+{
+	*val = 0;
+	*val2 = data->int_time;
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int ltrf216a_set_power_state(struct ltrf216a_data *data, bool on)
+{
+	struct device *dev = &data->client->dev;
+	int ret = 0;
+
+	if (on) {
+		ret = pm_runtime_resume_and_get(dev);
+		if (ret) {
+			dev_err(dev, "failed to resume runtime PM: %d\n", ret);
+			return ret;
+		}
+	} else {
+		pm_runtime_mark_last_busy(dev);
+		pm_runtime_put_autosuspend(dev);
+	}
+
+	return ret;
+}
+
+static int ltrf216a_read_data(struct ltrf216a_data *data, u8 addr)
+{
+	struct device *dev = &data->client->dev;
+	int ret, val;
+	u8 buf[3];
+
+	ret = regmap_read_poll_timeout(data->regmap, LTRF216A_MAIN_STATUS,
+				       val, val & LTRF216A_ALS_DATA_STATUS,
+				       LTRF216A_ALS_READ_DATA_DELAY_US,
+				       LTRF216A_ALS_READ_DATA_DELAY_US * 50);
+	if (ret) {
+		dev_err(dev, "failed to wait for measurement data: %d\n", ret);
+		return ret;
+	}
+
+	ret = regmap_bulk_read(data->regmap, addr, buf, sizeof(buf));
+	if (ret) {
+		dev_err(dev, "failed to read measurement data: %d\n", ret);
+		return ret;
+	}
+
+	return get_unaligned_le24(&buf[0]);
+}
+
+static int ltrf216a_get_lux(struct ltrf216a_data *data)
+{
+	int ret, greendata;
+	u64 lux, div;
+
+	ret = ltrf216a_set_power_state(data, true);
+	if (ret)
+		return ret;
+
+	greendata = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0);
+	if (greendata < 0)
+		return greendata;
+
+	ltrf216a_set_power_state(data, false);
+
+	lux = greendata * 45 * LTRF216A_WIN_FAC * 100;
+	div = data->als_gain_fac * data->int_time_fac * 100;
+
+	return div_u64(lux, div);
+}
+
+static int ltrf216a_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int *val,
+			     int *val2, long mask)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ltrf216a_set_power_state(data, true);
+		if (ret)
+			return ret;
+		mutex_lock(&data->lock);
+		ret = ltrf216a_read_data(data, LTRF216A_ALS_DATA_0);
+		mutex_unlock(&data->lock);
+		ltrf216a_set_power_state(data, false);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_PROCESSED:
+		mutex_lock(&data->lock);
+		ret = ltrf216a_get_lux(data);
+		mutex_unlock(&data->lock);
+		if (ret < 0)
+			return ret;
+		*val = ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_INT_TIME:
+		mutex_lock(&data->lock);
+		ret = ltrf216a_get_int_time(data, val, val2);
+		mutex_unlock(&data->lock);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ltrf216a_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan, int val,
+			      int val2, long mask)
+{
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		if (val != 0)
+			return -EINVAL;
+		mutex_lock(&data->lock);
+		ret = ltrf216a_set_int_time(data, val2);
+		mutex_unlock(&data->lock);
+		return ret;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ltrf216a_read_available(struct iio_dev *indio_dev,
+				   struct iio_chan_spec const *chan,
+				   const int **vals, int *type, int *length,
+				   long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		*length = ARRAY_SIZE(ltrf216a_int_time_available) * 2;
+		*vals = (const int *)ltrf216a_int_time_available;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ltrf216a_info = {
+	.read_raw = ltrf216a_read_raw,
+	.write_raw = ltrf216a_write_raw,
+	.read_avail = ltrf216a_read_available,
+};
+
+static bool ltrf216a_readable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTRF216A_MAIN_CTRL:
+	case LTRF216A_ALS_MEAS_RES:
+	case LTRF216A_ALS_GAIN:
+	case LTRF216A_PART_ID:
+	case LTRF216A_MAIN_STATUS:
+	case LTRF216A_ALS_CLEAR_DATA_0:
+	case LTRF216A_ALS_CLEAR_DATA_1:
+	case LTRF216A_ALS_CLEAR_DATA_2:
+	case LTRF216A_ALS_DATA_0:
+	case LTRF216A_ALS_DATA_1:
+	case LTRF216A_ALS_DATA_2:
+	case LTRF216A_INT_CFG:
+	case LTRF216A_INT_PST:
+	case LTRF216A_ALS_THRES_UP_0:
+	case LTRF216A_ALS_THRES_UP_1:
+	case LTRF216A_ALS_THRES_UP_2:
+	case LTRF216A_ALS_THRES_LOW_0:
+	case LTRF216A_ALS_THRES_LOW_1:
+	case LTRF216A_ALS_THRES_LOW_2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltrf216a_writable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTRF216A_MAIN_CTRL:
+	case LTRF216A_ALS_MEAS_RES:
+	case LTRF216A_ALS_GAIN:
+	case LTRF216A_INT_CFG:
+	case LTRF216A_INT_PST:
+	case LTRF216A_ALS_THRES_UP_0:
+	case LTRF216A_ALS_THRES_UP_1:
+	case LTRF216A_ALS_THRES_UP_2:
+	case LTRF216A_ALS_THRES_LOW_0:
+	case LTRF216A_ALS_THRES_LOW_1:
+	case LTRF216A_ALS_THRES_LOW_2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltrf216a_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case LTRF216A_MAIN_STATUS:
+	case LTRF216A_ALS_CLEAR_DATA_0:
+	case LTRF216A_ALS_CLEAR_DATA_1:
+	case LTRF216A_ALS_CLEAR_DATA_2:
+	case LTRF216A_ALS_DATA_0:
+	case LTRF216A_ALS_DATA_1:
+	case LTRF216A_ALS_DATA_2:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool ltrf216a_precious_reg(struct device *dev, unsigned int reg)
+{
+	return reg == LTRF216A_MAIN_STATUS;
+}
+
+static const struct regmap_config ltrf216a_regmap_config = {
+	.name = "ltrf216a",
+	.reg_bits = 8,
+	.val_bits = 8,
+	.cache_type = REGCACHE_RBTREE,
+	.max_register = LTRF216A_ALS_THRES_LOW_2,
+	.readable_reg = ltrf216a_readable_reg,
+	.writeable_reg = ltrf216a_writable_reg,
+	.volatile_reg = ltrf216a_volatile_reg,
+	.precious_reg = ltrf216a_precious_reg,
+	.disable_locking = true,
+};
+
+static int ltrf216a_probe(struct i2c_client *client)
+{
+	struct ltrf216a_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+
+	data->regmap = devm_regmap_init_i2c(client, &ltrf216a_regmap_config);
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(&client->dev, PTR_ERR(data->regmap),
+				     "regmap initialization failed\n");
+
+	i2c_set_clientdata(client, indio_dev);
+	data->client = client;
+
+	mutex_init(&data->lock);
+
+	indio_dev->info = &ltrf216a_info;
+	indio_dev->name = "ltrf216a";
+	indio_dev->channels = ltrf216a_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ltrf216a_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = pm_runtime_set_active(&client->dev);
+	if (ret)
+		return ret;
+
+	/* reset sensor, chip fails to respond to this, so ignore any errors */
+	ltrf216a_reset(indio_dev);
+
+	ret = regmap_reinit_cache(data->regmap, &ltrf216a_regmap_config);
+	if (ret)
+		return dev_err_probe(&client->dev, ret,
+				     "failed to reinit regmap cache\n");
+
+	ret = ltrf216a_enable(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, ltrf216a_cleanup,
+				       indio_dev);
+	if (ret)
+		return ret;
+
+	ret = devm_pm_runtime_enable(&client->dev);
+	if (ret)
+		return dev_err_probe(&client->dev, ret,
+				     "failed to enable runtime PM\n");
+
+	pm_runtime_set_autosuspend_delay(&client->dev, 1000);
+	pm_runtime_use_autosuspend(&client->dev);
+
+	data->int_time = 100000;
+	data->int_time_fac = 100;
+	data->als_gain_fac = 3;
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static int ltrf216a_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = ltrf216a_disable(indio_dev);
+	if (ret)
+		return ret;
+
+	regcache_cache_only(data->regmap, true);
+
+	return 0;
+}
+
+static int ltrf216a_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct ltrf216a_data *data = iio_priv(indio_dev);
+	int ret;
+
+	regcache_cache_only(data->regmap, false);
+	regcache_mark_dirty(data->regmap);
+	ret = regcache_sync(data->regmap);
+	if (ret)
+		goto cache_only;
+
+	ret = ltrf216a_enable(indio_dev);
+	if (ret)
+		goto cache_only;
+
+	return 0;
+
+cache_only:
+	regcache_cache_only(data->regmap, true);
+
+	return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(ltrf216a_pm_ops, ltrf216a_runtime_suspend,
+				 ltrf216a_runtime_resume, NULL);
+
+static const struct i2c_device_id ltrf216a_id[] = {
+	{ "ltrf216a" },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, ltrf216a_id);
+
+static const struct of_device_id ltrf216a_of_match[] = {
+	{ .compatible = "liteon,ltrf216a" },
+	{ .compatible = "ltr,ltrf216a" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, ltrf216a_of_match);
+
+static struct i2c_driver ltrf216a_driver = {
+	.driver = {
+		.name = "ltrf216a",
+		.pm = pm_ptr(&ltrf216a_pm_ops),
+		.of_match_table = ltrf216a_of_match,
+	},
+	.probe_new = ltrf216a_probe,
+	.id_table = ltrf216a_id,
+};
+module_i2c_driver(ltrf216a_driver);
+
+MODULE_AUTHOR("Shreeya Patel <shreeya.patel@collabora.com>");
+MODULE_AUTHOR("Shi Zhigang <Zhigang.Shi@liteon.com>");
+MODULE_DESCRIPTION("LTRF216A ambient light sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/light/lv0104cs.c b/drivers/iio/light/lv0104cs.c
index 55b8e2855647..c2aef88f4e63 100644
--- a/drivers/iio/light/lv0104cs.c
+++ b/drivers/iio/light/lv0104cs.c
@@ -7,7 +7,7 @@
  *
  * 7-bit I2C slave address: 0x13
  *
- * Link to data sheet: http://www.onsemi.com/pub/Collateral/LV0104CS-D.PDF
+ * Link to data sheet: https://www.onsemi.com/pub/Collateral/LV0104CS-D.PDF
  */
 
 #include <linux/kernel.h>
@@ -502,7 +502,6 @@ static int lv0104cs_probe(struct i2c_client *client,
 		return ret;
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = lv0104cs_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lv0104cs_channels);
 	indio_dev->name = client->name;
diff --git a/drivers/iio/light/max44000.c b/drivers/iio/light/max44000.c
index d6d8007ba430..85689dffbcbf 100644
--- a/drivers/iio/light/max44000.c
+++ b/drivers/iio/light/max44000.c
@@ -75,6 +75,11 @@
 struct max44000_data {
 	struct mutex lock;
 	struct regmap *regmap;
+	/* Ensure naturally aligned timestamp */
+	struct {
+		u16 channels[2];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 /* Default scale is set to the minimum of 0.03125 or 1 / (1 << 5) lux */
@@ -488,7 +493,6 @@ static irqreturn_t max44000_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct max44000_data *data = iio_priv(indio_dev);
-	u16 buf[8]; /* 2x u16 + padding + 8 bytes timestamp */
 	int index = 0;
 	unsigned int regval;
 	int ret;
@@ -498,17 +502,17 @@ static irqreturn_t max44000_trigger_handler(int irq, void *p)
 		ret = max44000_read_alsval(data);
 		if (ret < 0)
 			goto out_unlock;
-		buf[index++] = ret;
+		data->scan.channels[index++] = ret;
 	}
 	if (test_bit(MAX44000_SCAN_INDEX_PRX, indio_dev->active_scan_mask)) {
 		ret = regmap_read(data->regmap, MAX44000_REG_PRX_DATA, &regval);
 		if (ret < 0)
 			goto out_unlock;
-		buf[index] = regval;
+		data->scan.channels[index] = regval;
 	}
 	mutex_unlock(&data->lock);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   iio_get_time_ns(indio_dev));
 	iio_trigger_notify_done(indio_dev->trig);
 	return IRQ_HANDLED;
@@ -536,9 +540,7 @@ static int max44000_probe(struct i2c_client *client,
 		return PTR_ERR(data->regmap);
 	}
 
-	i2c_set_clientdata(client, indio_dev);
 	mutex_init(&data->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &max44000_info;
 	indio_dev->name = MAX44000_DRV_NAME;
 	indio_dev->channels = max44000_channels;
@@ -586,23 +588,14 @@ static int max44000_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL, max44000_trigger_handler, NULL);
+	ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL,
+					      max44000_trigger_handler, NULL);
 	if (ret < 0) {
 		dev_err(&client->dev, "iio triggered buffer setup failed\n");
 		return ret;
 	}
 
-	return iio_device_register(indio_dev);
-}
-
-static int max44000_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
 static const struct i2c_device_id max44000_id[] = {
@@ -625,7 +618,6 @@ static struct i2c_driver max44000_driver = {
 		.acpi_match_table = ACPI_PTR(max44000_acpi_match),
 	},
 	.probe		= max44000_probe,
-	.remove		= max44000_remove,
 	.id_table	= max44000_id,
 };
 
diff --git a/drivers/iio/light/max44009.c b/drivers/iio/light/max44009.c
index 00ba15499638..801e5a0ad496 100644
--- a/drivers/iio/light/max44009.c
+++ b/drivers/iio/light/max44009.c
@@ -501,7 +501,6 @@ static int max44009_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &max44009_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->name = MAX44009_DRV_NAME;
diff --git a/drivers/iio/light/noa1305.c b/drivers/iio/light/noa1305.c
index 5ebfbc52f541..ee81fe083e4c 100644
--- a/drivers/iio/light/noa1305.c
+++ b/drivers/iio/light/noa1305.c
@@ -217,10 +217,9 @@ static int noa1305_probe(struct i2c_client *client,
 	priv = iio_priv(indio_dev);
 
 	priv->vin_reg = devm_regulator_get(&client->dev, "vin");
-	if (IS_ERR(priv->vin_reg)) {
-		dev_err(&client->dev, "get regulator vin failed\n");
-		return PTR_ERR(priv->vin_reg);
-	}
+	if (IS_ERR(priv->vin_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(priv->vin_reg),
+				     "get regulator vin failed\n");
 
 	ret = regulator_enable(priv->vin_reg);
 	if (ret) {
@@ -270,7 +269,6 @@ static int noa1305_probe(struct i2c_client *client,
 		return ret;
 	}
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &noa1305_info;
 	indio_dev->channels = noa1305_channels;
 	indio_dev->num_channels = ARRAY_SIZE(noa1305_channels);
diff --git a/drivers/iio/light/opt3001.c b/drivers/iio/light/opt3001.c
index 92004a2563ea..a26d1c3f9543 100644
--- a/drivers/iio/light/opt3001.c
+++ b/drivers/iio/light/opt3001.c
@@ -1,8 +1,8 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * opt3001.c - Texas Instruments OPT3001 Light Sensor
  *
- * Copyright (C) 2014 Texas Instruments Incorporated - http://www.ti.com
+ * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com
  *
  * Author: Andreas Dannenberg <dannenberg@ti.com>
  * Based on previous work from: Felipe Balbi <balbi@ti.com>
@@ -16,6 +16,7 @@
 #include <linux/irq.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
 #include <linux/types.h>
@@ -275,6 +276,8 @@ static int opt3001_get_lux(struct opt3001 *opt, int *val, int *val2)
 		ret = wait_event_timeout(opt->result_ready_queue,
 				opt->result_ready,
 				msecs_to_jiffies(OPT3001_RESULT_READY_LONG));
+		if (ret == 0)
+			return -ETIMEDOUT;
 	} else {
 		/* Sleep for result ready time */
 		timeout = (opt->int_time == OPT3001_INT_TIME_SHORT) ?
@@ -311,9 +314,7 @@ err:
 		/* Disallow IRQ to access the device while lock is active */
 		opt->ok_to_ignore_lock = false;
 
-	if (ret == 0)
-		return -ETIMEDOUT;
-	else if (ret < 0)
+	if (ret < 0)
 		return ret;
 
 	if (opt->use_irq) {
@@ -767,7 +768,6 @@ static int opt3001_probe(struct i2c_client *client,
 	iio->name = client->name;
 	iio->channels = opt3001_channels;
 	iio->num_channels = ARRAY_SIZE(opt3001_channels);
-	iio->dev.parent = dev;
 	iio->modes = INDIO_DIRECT_MODE;
 	iio->info = &opt3001_info;
 
@@ -794,7 +794,7 @@ static int opt3001_probe(struct i2c_client *client,
 	return 0;
 }
 
-static int opt3001_remove(struct i2c_client *client)
+static void opt3001_remove(struct i2c_client *client)
 {
 	struct iio_dev *iio = i2c_get_clientdata(client);
 	struct opt3001 *opt = iio_priv(iio);
@@ -808,7 +808,7 @@ static int opt3001_remove(struct i2c_client *client)
 	if (ret < 0) {
 		dev_err(opt->dev, "failed to read register %02x\n",
 				OPT3001_CONFIGURATION);
-		return ret;
+		return;
 	}
 
 	reg = ret;
@@ -819,10 +819,7 @@ static int opt3001_remove(struct i2c_client *client)
 	if (ret < 0) {
 		dev_err(opt->dev, "failed to write register %02x\n",
 				OPT3001_CONFIGURATION);
-		return ret;
 	}
-
-	return 0;
 }
 
 static const struct i2c_device_id opt3001_id[] = {
@@ -844,7 +841,7 @@ static struct i2c_driver opt3001_driver = {
 
 	.driver = {
 		.name = "opt3001",
-		.of_match_table = of_match_ptr(opt3001_of_match),
+		.of_match_table = opt3001_of_match,
 	},
 };
 
diff --git a/drivers/iio/light/pa12203001.c b/drivers/iio/light/pa12203001.c
index 0295783f036a..3cb2de51f4aa 100644
--- a/drivers/iio/light/pa12203001.c
+++ b/drivers/iio/light/pa12203001.c
@@ -186,9 +186,7 @@ static int pa12203001_set_power_state(struct pa12203001_data *data, bool on,
 	}
 
 	if (on) {
-		ret = pm_runtime_get_sync(&data->client->dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(&data->client->dev);
+		ret = pm_runtime_resume_and_get(&data->client->dev);
 
 	} else {
 		pm_runtime_mark_last_busy(&data->client->dev);
@@ -362,7 +360,6 @@ static int pa12203001_probe(struct i2c_client *client,
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &pa12203001_info;
 	indio_dev->name = PA12203001_DRIVER_NAME;
 	indio_dev->channels = pa12203001_channels;
@@ -397,16 +394,20 @@ out_err:
 	return ret;
 }
 
-static int pa12203001_remove(struct i2c_client *client)
+static void pa12203001_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
 
-	return pa12203001_power_chip(indio_dev, PA12203001_CHIP_DISABLE);
+	ret = pa12203001_power_chip(indio_dev, PA12203001_CHIP_DISABLE);
+	if (ret)
+		dev_warn(&client->dev, "Failed to power down (%pe)\n",
+			 ERR_PTR(ret));
 }
 
 #if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM)
@@ -455,14 +456,14 @@ static const struct dev_pm_ops pa12203001_pm_ops = {
 };
 
 static const struct acpi_device_id pa12203001_acpi_match[] = {
-	{ "TXCPA122", 0},
+	{ "TXCPA122", 0 },
 	{}
 };
 
 MODULE_DEVICE_TABLE(acpi, pa12203001_acpi_match);
 
 static const struct i2c_device_id pa12203001_id[] = {
-		{"txcpa122", 0},
+		{ "txcpa122", 0 },
 		{}
 };
 
diff --git a/drivers/iio/light/rpr0521.c b/drivers/iio/light/rpr0521.c
index a0a7aeae5a82..d1c16dd76058 100644
--- a/drivers/iio/light/rpr0521.c
+++ b/drivers/iio/light/rpr0521.c
@@ -194,6 +194,17 @@ struct rpr0521_data {
 	bool pxs_need_dis;
 
 	struct regmap *regmap;
+
+	/*
+	 * Ensure correct naturally aligned timestamp.
+	 * Note that the read will put garbage data into
+	 * the padding but this should not be a problem
+	 */
+	struct {
+		__le16 channels[3];
+		u8 garbage;
+		s64 ts __aligned(8);
+	} scan;
 };
 
 static IIO_CONST_ATTR(in_intensity_scale_available, RPR0521_ALS_SCALE_AVAIL);
@@ -349,7 +360,7 @@ static int rpr0521_set_power_state(struct rpr0521_data *data, bool on,
 	 * both stay enabled until _suspend().
 	 */
 	if (on) {
-		ret = pm_runtime_get_sync(&data->client->dev);
+		ret = pm_runtime_resume_and_get(&data->client->dev);
 	} else {
 		pm_runtime_mark_last_busy(&data->client->dev);
 		ret = pm_runtime_put_autosuspend(&data->client->dev);
@@ -358,9 +369,6 @@ static int rpr0521_set_power_state(struct rpr0521_data *data, bool on,
 		dev_err(&data->client->dev,
 			"Failed: rpr0521_set_power_state for %d, ret %d\n",
 			on, ret);
-		if (on)
-			pm_runtime_put_noidle(&data->client->dev);
-
 		return ret;
 	}
 
@@ -449,8 +457,6 @@ static irqreturn_t rpr0521_trigger_consumer_handler(int irq, void *p)
 	struct rpr0521_data *data = iio_priv(indio_dev);
 	int err;
 
-	u8 buffer[16]; /* 3 16-bit channels + padding + ts */
-
 	/* Use irq timestamp when reasonable. */
 	if (iio_trigger_using_own(indio_dev) && data->irq_timestamp) {
 		pf->timestamp = data->irq_timestamp;
@@ -461,11 +467,11 @@ static irqreturn_t rpr0521_trigger_consumer_handler(int irq, void *p)
 		pf->timestamp = iio_get_time_ns(indio_dev);
 
 	err = regmap_bulk_read(data->regmap, RPR0521_REG_PXS_DATA,
-		&buffer,
+		data->scan.channels,
 		(3 * 2) + 1);	/* 3 * 16-bit + (discarded) int clear reg. */
 	if (!err)
 		iio_push_to_buffers_with_timestamp(indio_dev,
-						   buffer, pf->timestamp);
+						   &data->scan, pf->timestamp);
 	else
 		dev_err(&data->client->dev,
 			"Trigger consumer can't read from sensor.\n");
@@ -570,8 +576,6 @@ static int rpr0521_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops rpr0521_buffer_setup_ops = {
 	.preenable = rpr0521_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = rpr0521_buffer_postdisable,
 };
 
@@ -948,7 +952,6 @@ static int rpr0521_probe(struct i2c_client *client,
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &rpr0521_info;
 	indio_dev->name = RPR0521_DRV_NAME;
 	indio_dev->channels = rpr0521_channels;
@@ -979,12 +982,11 @@ static int rpr0521_probe(struct i2c_client *client,
 		/* Trigger0 producer setup */
 		data->drdy_trigger0 = devm_iio_trigger_alloc(
 			indio_dev->dev.parent,
-			"%s-dev%d", indio_dev->name, indio_dev->id);
+			"%s-dev%d", indio_dev->name, iio_device_id(indio_dev));
 		if (!data->drdy_trigger0) {
 			ret = -ENOMEM;
 			goto err_pm_disable;
 		}
-		data->drdy_trigger0->dev.parent = indio_dev->dev.parent;
 		data->drdy_trigger0->ops = &rpr0521_trigger_ops;
 		indio_dev->available_scan_masks = rpr0521_available_scan_masks;
 		iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev);
@@ -1033,14 +1035,13 @@ static int rpr0521_probe(struct i2c_client *client,
 err_pm_disable:
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 err_poweroff:
 	rpr0521_poweroff(data);
 
 	return ret;
 }
 
-static int rpr0521_remove(struct i2c_client *client)
+static void rpr0521_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
@@ -1048,14 +1049,10 @@ static int rpr0521_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
 	rpr0521_poweroff(iio_priv(indio_dev));
-
-	return 0;
 }
 
-#ifdef CONFIG_PM
 static int rpr0521_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -1101,11 +1098,9 @@ static int rpr0521_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops rpr0521_pm_ops = {
-	SET_RUNTIME_PM_OPS(rpr0521_runtime_suspend,
-			   rpr0521_runtime_resume, NULL)
+	RUNTIME_PM_OPS(rpr0521_runtime_suspend, rpr0521_runtime_resume, NULL)
 };
 
 static const struct acpi_device_id rpr0521_acpi_match[] = {
@@ -1124,7 +1119,7 @@ MODULE_DEVICE_TABLE(i2c, rpr0521_id);
 static struct i2c_driver rpr0521_driver = {
 	.driver = {
 		.name	= RPR0521_DRV_NAME,
-		.pm	= &rpr0521_pm_ops,
+		.pm	= pm_ptr(&rpr0521_pm_ops),
 		.acpi_match_table = ACPI_PTR(rpr0521_acpi_match),
 	},
 	.probe		= rpr0521_probe,
diff --git a/drivers/iio/light/si1133.c b/drivers/iio/light/si1133.c
index 015a21f0c2ef..f8c9b2cc322e 100644
--- a/drivers/iio/light/si1133.c
+++ b/drivers/iio/light/si1133.c
@@ -17,6 +17,8 @@
 
 #include <linux/util_macros.h>
 
+#include <asm/unaligned.h>
+
 #define SI1133_REG_PART_ID		0x00
 #define SI1133_REG_REV_ID		0x01
 #define SI1133_REG_MFR_ID		0x02
@@ -102,6 +104,7 @@
 #define SI1133_INPUT_FRACTION_LOW	15
 #define SI1133_LUX_OUTPUT_FRACTION	12
 #define SI1133_LUX_BUFFER_SIZE		9
+#define SI1133_MEASURE_BUFFER_SIZE	3
 
 static const int si1133_scale_available[] = {
 	1, 2, 4, 8, 16, 32, 64, 128};
@@ -234,13 +237,13 @@ static const struct si1133_lux_coeff lux_coeff = {
 	}
 };
 
-static int si1133_calculate_polynomial_inner(u32 input, u8 fraction, u16 mag,
+static int si1133_calculate_polynomial_inner(s32 input, u8 fraction, u16 mag,
 					     s8 shift)
 {
 	return ((input << fraction) / mag) << shift;
 }
 
-static int si1133_calculate_output(u32 x, u32 y, u8 x_order, u8 y_order,
+static int si1133_calculate_output(s32 x, s32 y, u8 x_order, u8 y_order,
 				   u8 input_fraction, s8 sign,
 				   const struct si1133_coeff *coeffs)
 {
@@ -276,7 +279,7 @@ static int si1133_calculate_output(u32 x, u32 y, u8 x_order, u8 y_order,
  * The algorithm is from:
  * https://siliconlabs.github.io/Gecko_SDK_Doc/efm32zg/html/si1133_8c_source.html#l00716
  */
-static int si1133_calc_polynomial(u32 x, u32 y, u8 input_fraction, u8 num_coeff,
+static int si1133_calc_polynomial(s32 x, s32 y, u8 input_fraction, u8 num_coeff,
 				  const struct si1133_coeff *coeffs)
 {
 	u8 x_order, y_order;
@@ -349,22 +352,22 @@ static int si1133_parse_response_err(struct device *dev, u32 resp, u8 cmd)
 
 	switch (resp) {
 	case SI1133_ERR_OUTPUT_BUFFER_OVERFLOW:
-		dev_warn(dev, "Output buffer overflow: %#02hhx\n", cmd);
+		dev_warn(dev, "Output buffer overflow: 0x%02x\n", cmd);
 		return -EOVERFLOW;
 	case SI1133_ERR_SATURATION_ADC_OR_OVERFLOW_ACCUMULATION:
-		dev_warn(dev, "Saturation of the ADC or overflow of accumulation: %#02hhx\n",
+		dev_warn(dev, "Saturation of the ADC or overflow of accumulation: 0x%02x\n",
 			 cmd);
 		return -EOVERFLOW;
 	case SI1133_ERR_INVALID_LOCATION_CMD:
 		dev_warn(dev,
-			 "Parameter access to an invalid location: %#02hhx\n",
+			 "Parameter access to an invalid location: 0x%02x\n",
 			 cmd);
 		return -EINVAL;
 	case SI1133_ERR_INVALID_CMD:
-		dev_warn(dev, "Invalid command %#02hhx\n", cmd);
+		dev_warn(dev, "Invalid command 0x%02x\n", cmd);
 		return -EINVAL;
 	default:
-		dev_warn(dev, "Unknown error %#02hhx\n", cmd);
+		dev_warn(dev, "Unknown error 0x%02x\n", cmd);
 		return -EINVAL;
 	}
 }
@@ -397,7 +400,7 @@ static int si1133_command(struct si1133_data *data, u8 cmd)
 
 	err = regmap_write(data->regmap, SI1133_REG_COMMAND, cmd);
 	if (err) {
-		dev_warn(dev, "Failed to write command %#02hhx, ret=%d\n", cmd,
+		dev_warn(dev, "Failed to write command 0x%02x, ret=%d\n", cmd,
 			 err);
 		goto out;
 	}
@@ -422,7 +425,7 @@ static int si1133_command(struct si1133_data *data, u8 cmd)
 					       SI1133_CMD_TIMEOUT_MS * 1000);
 		if (err) {
 			dev_warn(dev,
-				 "Failed to read command %#02hhx, ret=%d\n",
+				 "Failed to read command 0x%02x, ret=%d\n",
 				 cmd, err);
 			goto out;
 		}
@@ -614,7 +617,7 @@ static int si1133_measure(struct si1133_data *data,
 {
 	int err;
 
-	__be16 resp;
+	u8 buffer[SI1133_MEASURE_BUFFER_SIZE];
 
 	err = si1133_set_adcmux(data, 0, chan->channel);
 	if (err)
@@ -625,12 +628,12 @@ static int si1133_measure(struct si1133_data *data,
 	if (err)
 		return err;
 
-	err = si1133_bulk_read(data, SI1133_REG_HOSTOUT(0), sizeof(resp),
-			       (u8 *)&resp);
+	err = si1133_bulk_read(data, SI1133_REG_HOSTOUT(0), sizeof(buffer),
+			       buffer);
 	if (err)
 		return err;
 
-	*val = be16_to_cpu(resp);
+	*val = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
 
 	return err;
 }
@@ -704,9 +707,9 @@ static int si1133_get_lux(struct si1133_data *data, int *val)
 {
 	int err;
 	int lux;
-	u32 high_vis;
-	u32 low_vis;
-	u32 ir;
+	s32 high_vis;
+	s32 low_vis;
+	s32 ir;
 	u8 buffer[SI1133_LUX_BUFFER_SIZE];
 
 	/* Activate lux channels */
@@ -719,9 +722,11 @@ static int si1133_get_lux(struct si1133_data *data, int *val)
 	if (err)
 		return err;
 
-	high_vis = (buffer[0] << 16) | (buffer[1] << 8) | buffer[2];
-	low_vis = (buffer[3] << 16) | (buffer[4] << 8) | buffer[5];
-	ir = (buffer[6] << 16) | (buffer[7] << 8) | buffer[8];
+	high_vis = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
+
+	low_vis = sign_extend32(get_unaligned_be24(&buffer[3]), 23);
+
+	ir = sign_extend32(get_unaligned_be24(&buffer[6]), 23);
 
 	if (high_vis > SI1133_ADC_THRESHOLD || ir > SI1133_ADC_THRESHOLD)
 		lux = si1133_calc_polynomial(high_vis, ir,
@@ -973,11 +978,11 @@ static int si1133_validate_ids(struct iio_dev *iio_dev)
 		return err;
 
 	dev_info(&iio_dev->dev,
-		 "Device ID part %#02hhx rev %#02hhx mfr %#02hhx\n",
+		 "Device ID part 0x%02x rev 0x%02x mfr 0x%02x\n",
 		 part_id, rev_id, mfr_id);
 	if (part_id != SI1133_PART_ID) {
 		dev_err(&iio_dev->dev,
-			"Part ID mismatch got %#02hhx, expected %#02x\n",
+			"Part ID mismatch got 0x%02x, expected 0x%02x\n",
 			part_id, SI1133_PART_ID);
 		return -ENODEV;
 	}
@@ -1010,7 +1015,6 @@ static int si1133_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, iio_dev);
 	data->client = client;
 
-	iio_dev->dev.parent = &client->dev;
 	iio_dev->name = id->name;
 	iio_dev->channels = si1133_channels;
 	iio_dev->num_channels = ARRAY_SIZE(si1133_channels);
diff --git a/drivers/iio/light/si1145.c b/drivers/iio/light/si1145.c
index 0476c2bc8138..e8f6cdf26f22 100644
--- a/drivers/iio/light/si1145.c
+++ b/drivers/iio/light/si1145.c
@@ -168,6 +168,7 @@ struct si1145_part_info {
  * @part_info:	Part information
  * @trig:	Pointer to iio trigger
  * @meas_rate:	Value of MEAS_RATE register. Only set in HW in auto mode
+ * @buffer:	Used to pack data read from sensor.
  */
 struct si1145_data {
 	struct i2c_client *client;
@@ -179,9 +180,17 @@ struct si1145_data {
 	bool autonomous;
 	struct iio_trigger *trig;
 	int meas_rate;
+	/*
+	 * Ensure timestamp will be naturally aligned if present.
+	 * Maximum buffer size (may be only partly used if not all
+	 * channels are enabled):
+	 *   6*2 bytes channels data + 4 bytes alignment +
+	 *   8 bytes timestamp
+	 */
+	u8 buffer[24] __aligned(8);
 };
 
-/**
+/*
  * __si1145_command_reset() - Send CMD_NOP and wait for response 0
  *
  * Does not modify data->rsp_seq
@@ -211,11 +220,10 @@ static int __si1145_command_reset(struct si1145_data *data)
 			return -ETIMEDOUT;
 		}
 		msleep(SI1145_COMMAND_MINSLEEP_MS);
-		continue;
 	}
 }
 
-/**
+/*
  * si1145_command() - Execute a command and poll the response register
  *
  * All conversion overflows are reported as -EOVERFLOW
@@ -262,7 +270,7 @@ static int si1145_command(struct si1145_data *data, u8 cmd)
 		if ((ret & ~SI1145_RSP_COUNTER_MASK) == 0) {
 			if (ret == data->rsp_seq) {
 				if (time_after(jiffies, stop_jiffies)) {
-					dev_warn(dev, "timeout on command %#02hhx\n",
+					dev_warn(dev, "timeout on command 0x%02x\n",
 						 cmd);
 					ret = -ETIMEDOUT;
 					break;
@@ -282,12 +290,12 @@ static int si1145_command(struct si1145_data *data, u8 cmd)
 			ret = -EIO;
 		} else {
 			if (ret == SI1145_RSP_INVALID_SETTING) {
-				dev_warn(dev, "INVALID_SETTING error on command %#02hhx\n",
+				dev_warn(dev, "INVALID_SETTING error on command 0x%02x\n",
 					 cmd);
 				ret = -EINVAL;
 			} else {
 				/* All overflows are treated identically */
-				dev_dbg(dev, "overflow, ret=%d, cmd=%#02hhx\n",
+				dev_dbg(dev, "overflow, ret=%d, cmd=0x%02x\n",
 					ret, cmd);
 				ret = -EOVERFLOW;
 			}
@@ -440,12 +448,6 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
 	struct iio_poll_func *pf = private;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct si1145_data *data = iio_priv(indio_dev);
-	/*
-	 * Maximum buffer size:
-	 *   6*2 bytes channels data + 4 bytes alignment +
-	 *   8 bytes timestamp
-	 */
-	u8 buffer[24];
 	int i, j = 0;
 	int ret;
 	u8 irq_status = 0;
@@ -478,7 +480,7 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
 
 		ret = i2c_smbus_read_i2c_block_data_or_emulated(
 				data->client, indio_dev->channels[i].address,
-				sizeof(u16) * run, &buffer[j]);
+				sizeof(u16) * run, &data->buffer[j]);
 		if (ret < 0)
 			goto done;
 		j += run * sizeof(u16);
@@ -493,7 +495,7 @@ static irqreturn_t si1145_trigger_handler(int irq, void *private)
 			goto done;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
 		iio_get_time_ns(indio_dev));
 
 done:
@@ -1042,7 +1044,7 @@ static int si1145_initialize(struct si1145_data *data)
 						SI1145_LED_CURRENT_45mA);
 		if (ret < 0)
 			return ret;
-		/* fallthrough */
+		fallthrough;
 	case 2:
 		ret = i2c_smbus_write_byte_data(client,
 						SI1145_REG_PS_LED21,
@@ -1171,12 +1173,10 @@ static bool si1145_validate_scan_mask(struct iio_dev *indio_dev,
 
 static const struct iio_buffer_setup_ops si1145_buffer_setup_ops = {
 	.preenable = si1145_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.validate_scan_mask = si1145_validate_scan_mask,
 };
 
-/**
+/*
  * si1145_trigger_set_state() - Set trigger state
  *
  * When not using triggers interrupts are disabled and measurement rate is
@@ -1242,11 +1242,10 @@ static int si1145_probe_trigger(struct iio_dev *indio_dev)
 	int ret;
 
 	trig = devm_iio_trigger_alloc(&client->dev,
-			"%s-dev%d", indio_dev->name, indio_dev->id);
+			"%s-dev%d", indio_dev->name, iio_device_id(indio_dev));
 	if (!trig)
 		return -ENOMEM;
 
-	trig->dev.parent = &client->dev;
 	trig->ops = &si1145_trigger_ops;
 	iio_trigger_set_drvdata(trig, indio_dev);
 
@@ -1299,15 +1298,14 @@ static int si1145_probe(struct i2c_client *client,
 						SI1145_REG_SEQ_ID);
 	if (ret < 0)
 		return ret;
-	dev_info(&client->dev, "device ID part %#02hhx rev %#02hhx seq %#02hhx\n",
+	dev_info(&client->dev, "device ID part 0x%02x rev 0x%02x seq 0x%02x\n",
 			part_id, rev_id, seq_id);
 	if (part_id != data->part_info->part) {
-		dev_err(&client->dev, "part ID mismatch got %#02hhx, expected %#02x\n",
+		dev_err(&client->dev, "part ID mismatch got 0x%02x, expected 0x%02x\n",
 				part_id, data->part_info->part);
 		return -ENODEV;
 	}
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->channels = data->part_info->channels;
 	indio_dev->num_channels = data->part_info->num_channels;
diff --git a/drivers/iio/light/st_uvis25.h b/drivers/iio/light/st_uvis25.h
index 78bc56aad129..283086887caf 100644
--- a/drivers/iio/light/st_uvis25.h
+++ b/drivers/iio/light/st_uvis25.h
@@ -27,6 +27,11 @@ struct st_uvis25_hw {
 	struct iio_trigger *trig;
 	bool enabled;
 	int irq;
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u8 chan;
+		s64 ts __aligned(8);
+	} scan;
 };
 
 extern const struct dev_pm_ops st_uvis25_pm_ops;
diff --git a/drivers/iio/light/st_uvis25_core.c b/drivers/iio/light/st_uvis25_core.c
index d262c254b895..c737d3e193ae 100644
--- a/drivers/iio/light/st_uvis25_core.c
+++ b/drivers/iio/light/st_uvis25_core.c
@@ -210,7 +210,6 @@ static int st_uvis25_allocate_trigger(struct iio_dev *iio_dev)
 		return -ENOMEM;
 
 	iio_trigger_set_drvdata(hw->trig, iio_dev);
-	hw->trig->dev.parent = dev;
 
 	return devm_iio_trigger_register(dev, hw->trig);
 }
@@ -227,24 +226,24 @@ static int st_uvis25_buffer_postdisable(struct iio_dev *iio_dev)
 
 static const struct iio_buffer_setup_ops st_uvis25_buffer_ops = {
 	.preenable = st_uvis25_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = st_uvis25_buffer_postdisable,
 };
 
 static irqreturn_t st_uvis25_buffer_handler_thread(int irq, void *p)
 {
-	u8 buffer[ALIGN(sizeof(u8), sizeof(s64)) + sizeof(s64)];
 	struct iio_poll_func *pf = p;
 	struct iio_dev *iio_dev = pf->indio_dev;
 	struct st_uvis25_hw *hw = iio_priv(iio_dev);
+	unsigned int val;
 	int err;
 
-	err = regmap_read(hw->regmap, ST_UVIS25_REG_OUT_ADDR, (int *)buffer);
+	err = regmap_read(hw->regmap, ST_UVIS25_REG_OUT_ADDR, &val);
 	if (err < 0)
 		goto out;
 
-	iio_push_to_buffers_with_timestamp(iio_dev, buffer,
+	hw->scan.chan = val;
+
+	iio_push_to_buffers_with_timestamp(iio_dev, &hw->scan,
 					   iio_get_time_ns(iio_dev));
 
 out:
@@ -303,7 +302,6 @@ int st_uvis25_probe(struct device *dev, int irq, struct regmap *regmap)
 		return err;
 
 	iio_dev->modes = INDIO_DIRECT_MODE;
-	iio_dev->dev.parent = dev;
 	iio_dev->channels = st_uvis25_channels;
 	iio_dev->num_channels = ARRAY_SIZE(st_uvis25_channels);
 	iio_dev->name = ST_UVIS25_DEV_NAME;
@@ -325,9 +323,9 @@ int st_uvis25_probe(struct device *dev, int irq, struct regmap *regmap)
 
 	return devm_iio_device_register(dev, iio_dev);
 }
-EXPORT_SYMBOL(st_uvis25_probe);
+EXPORT_SYMBOL_NS(st_uvis25_probe, IIO_UVIS25);
 
-static int __maybe_unused st_uvis25_suspend(struct device *dev)
+static int st_uvis25_suspend(struct device *dev)
 {
 	struct iio_dev *iio_dev = dev_get_drvdata(dev);
 	struct st_uvis25_hw *hw = iio_priv(iio_dev);
@@ -336,7 +334,7 @@ static int __maybe_unused st_uvis25_suspend(struct device *dev)
 				  ST_UVIS25_REG_ODR_MASK, 0);
 }
 
-static int __maybe_unused st_uvis25_resume(struct device *dev)
+static int st_uvis25_resume(struct device *dev)
 {
 	struct iio_dev *iio_dev = dev_get_drvdata(dev);
 	struct st_uvis25_hw *hw = iio_priv(iio_dev);
@@ -348,10 +346,7 @@ static int __maybe_unused st_uvis25_resume(struct device *dev)
 	return 0;
 }
 
-const struct dev_pm_ops st_uvis25_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(st_uvis25_suspend, st_uvis25_resume)
-};
-EXPORT_SYMBOL(st_uvis25_pm_ops);
+EXPORT_NS_SIMPLE_DEV_PM_OPS(st_uvis25_pm_ops, st_uvis25_suspend, st_uvis25_resume, IIO_UVIS25);
 
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
 MODULE_DESCRIPTION("STMicroelectronics uvis25 sensor driver");
diff --git a/drivers/iio/light/st_uvis25_i2c.c b/drivers/iio/light/st_uvis25_i2c.c
index 4889bbeb0c73..c982b0b255cf 100644
--- a/drivers/iio/light/st_uvis25_i2c.c
+++ b/drivers/iio/light/st_uvis25_i2c.c
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
 #include <linux/regmap.h>
@@ -31,8 +32,8 @@ static int st_uvis25_i2c_probe(struct i2c_client *client,
 
 	regmap = devm_regmap_init_i2c(client, &st_uvis25_i2c_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&client->dev, "Failed to register i2c regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&client->dev, "Failed to register i2c regmap %ld\n",
+			PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -54,8 +55,8 @@ MODULE_DEVICE_TABLE(i2c, st_uvis25_i2c_id_table);
 static struct i2c_driver st_uvis25_driver = {
 	.driver = {
 		.name = "st_uvis25_i2c",
-		.pm = &st_uvis25_pm_ops,
-		.of_match_table = of_match_ptr(st_uvis25_i2c_of_match),
+		.pm = pm_sleep_ptr(&st_uvis25_pm_ops),
+		.of_match_table = st_uvis25_i2c_of_match,
 	},
 	.probe = st_uvis25_i2c_probe,
 	.id_table = st_uvis25_i2c_id_table,
@@ -65,3 +66,4 @@ module_i2c_driver(st_uvis25_driver);
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
 MODULE_DESCRIPTION("STMicroelectronics uvis25 i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_UVIS25);
diff --git a/drivers/iio/light/st_uvis25_spi.c b/drivers/iio/light/st_uvis25_spi.c
index a9ceae4f58b3..86a232320d7d 100644
--- a/drivers/iio/light/st_uvis25_spi.c
+++ b/drivers/iio/light/st_uvis25_spi.c
@@ -9,6 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/regmap.h>
@@ -31,8 +32,8 @@ static int st_uvis25_spi_probe(struct spi_device *spi)
 
 	regmap = devm_regmap_init_spi(spi, &st_uvis25_spi_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap %ld\n",
+			PTR_ERR(regmap));
 		return PTR_ERR(regmap);
 	}
 
@@ -54,8 +55,8 @@ MODULE_DEVICE_TABLE(spi, st_uvis25_spi_id_table);
 static struct spi_driver st_uvis25_driver = {
 	.driver = {
 		.name = "st_uvis25_spi",
-		.pm = &st_uvis25_pm_ops,
-		.of_match_table = of_match_ptr(st_uvis25_spi_of_match),
+		.pm = pm_sleep_ptr(&st_uvis25_pm_ops),
+		.of_match_table = st_uvis25_spi_of_match,
 	},
 	.probe = st_uvis25_spi_probe,
 	.id_table = st_uvis25_spi_id_table,
@@ -65,3 +66,4 @@ module_spi_driver(st_uvis25_driver);
 MODULE_AUTHOR("Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>");
 MODULE_DESCRIPTION("STMicroelectronics uvis25 spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_UVIS25);
diff --git a/drivers/iio/light/stk3310.c b/drivers/iio/light/stk3310.c
index 185c24a75ae6..7b8e0da6aabc 100644
--- a/drivers/iio/light/stk3310.c
+++ b/drivers/iio/light/stk3310.c
@@ -1,5 +1,5 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * Sensortek STK3310/STK3311 Ambient Light and Proximity Sensor
  *
  * Copyright (c) 2015, Intel Corporation.
@@ -37,6 +37,7 @@
 
 #define STK3310_CHIP_ID_VAL			0x13
 #define STK3311_CHIP_ID_VAL			0x1D
+#define STK3311X_CHIP_ID_VAL			0x12
 #define STK3335_CHIP_ID_VAL			0x51
 #define STK3310_PSINT_EN			0x01
 #define STK3310_PS_MAX_VAL			0xFFFF
@@ -105,6 +106,7 @@ struct stk3310_data {
 	struct mutex lock;
 	bool als_enabled;
 	bool ps_enabled;
+	uint32_t ps_near_level;
 	u64 timestamp;
 	struct regmap *regmap;
 	struct regmap_field *reg_state;
@@ -134,6 +136,25 @@ static const struct iio_event_spec stk3310_events[] = {
 	},
 };
 
+static ssize_t stk3310_read_near_level(struct iio_dev *indio_dev,
+				       uintptr_t priv,
+				       const struct iio_chan_spec *chan,
+				       char *buf)
+{
+	struct stk3310_data *data = iio_priv(indio_dev);
+
+	return sprintf(buf, "%u\n", data->ps_near_level);
+}
+
+static const struct iio_chan_spec_ext_info stk3310_ext_info[] = {
+	{
+		.name = "nearlevel",
+		.shared = IIO_SEPARATE,
+		.read = stk3310_read_near_level,
+	},
+	{ /* sentinel */ }
+};
+
 static const struct iio_chan_spec stk3310_channels[] = {
 	{
 		.type = IIO_LIGHT,
@@ -150,6 +171,7 @@ static const struct iio_chan_spec stk3310_channels[] = {
 			BIT(IIO_CHAN_INFO_INT_TIME),
 		.event_spec = stk3310_events,
 		.num_event_specs = ARRAY_SIZE(stk3310_events),
+		.ext_info = stk3310_ext_info,
 	}
 };
 
@@ -453,6 +475,7 @@ static int stk3310_init(struct iio_dev *indio_dev)
 
 	if (chipid != STK3310_CHIP_ID_VAL &&
 	    chipid != STK3311_CHIP_ID_VAL &&
+	    chipid != STK3311X_CHIP_ID_VAL &&
 	    chipid != STK3335_CHIP_ID_VAL) {
 		dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid);
 		return -ENODEV;
@@ -487,7 +510,7 @@ static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg)
 	}
 }
 
-static struct regmap_config stk3310_regmap_config = {
+static const struct regmap_config stk3310_regmap_config = {
 	.name = STK3310_REGMAP_NAME,
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -544,9 +567,8 @@ static irqreturn_t stk3310_irq_event_handler(int irq, void *private)
 	mutex_lock(&data->lock);
 	ret = regmap_field_read(data->reg_flag_nf, &dir);
 	if (ret < 0) {
-		dev_err(&data->client->dev, "register read failed\n");
-		mutex_unlock(&data->lock);
-		return ret;
+		dev_err(&data->client->dev, "register read failed: %d\n", ret);
+		goto out;
 	}
 	event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1,
 				     IIO_EV_TYPE_THRESH,
@@ -558,6 +580,7 @@ static irqreturn_t stk3310_irq_event_handler(int irq, void *private)
 	ret = regmap_field_write(data->reg_flag_psint, 0);
 	if (ret < 0)
 		dev_err(&data->client->dev, "failed to reset interrupts\n");
+out:
 	mutex_unlock(&data->lock);
 
 	return IRQ_HANDLED;
@@ -579,13 +602,16 @@ static int stk3310_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 	data->client = client;
 	i2c_set_clientdata(client, indio_dev);
+
+	device_property_read_u32(&client->dev, "proximity-near-level",
+				 &data->ps_near_level);
+
 	mutex_init(&data->lock);
 
 	ret = stk3310_regmap_init(data);
 	if (ret < 0)
 		return ret;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &stk3310_info;
 	indio_dev->name = STK3310_DRIVER_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -623,15 +649,14 @@ err_standby:
 	return ret;
 }
 
-static int stk3310_remove(struct i2c_client *client)
+static void stk3310_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
-	return stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);
+	stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int stk3310_suspend(struct device *dev)
 {
 	struct stk3310_data *data;
@@ -655,12 +680,8 @@ static int stk3310_resume(struct device *dev)
 	return stk3310_set_state(data, state);
 }
 
-static SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend, stk3310_resume);
-
-#define STK3310_PM_OPS (&stk3310_pm_ops)
-#else
-#define STK3310_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend,
+				stk3310_resume);
 
 static const struct i2c_device_id stk3310_i2c_id[] = {
 	{"STK3310", 0},
@@ -691,7 +712,7 @@ static struct i2c_driver stk3310_driver = {
 	.driver = {
 		.name = "stk3310",
 		.of_match_table = stk3310_of_match,
-		.pm = STK3310_PM_OPS,
+		.pm = pm_sleep_ptr(&stk3310_pm_ops),
 		.acpi_match_table = ACPI_PTR(stk3310_acpi_id),
 	},
 	.probe =            stk3310_probe,
diff --git a/drivers/iio/light/tcs3414.c b/drivers/iio/light/tcs3414.c
index b542e5619ead..3951536022b3 100644
--- a/drivers/iio/light/tcs3414.c
+++ b/drivers/iio/light/tcs3414.c
@@ -53,7 +53,11 @@ struct tcs3414_data {
 	u8 control;
 	u8 gain;
 	u8 timing;
-	u16 buffer[8]; /* 4x 16-bit + 8 bytes timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u16 chans[4];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 #define TCS3414_CHANNEL(_color, _si, _addr) { \
@@ -209,10 +213,10 @@ static irqreturn_t tcs3414_trigger_handler(int irq, void *p)
 		if (ret < 0)
 			goto done;
 
-		data->buffer[j++] = ret;
+		data->scan.chans[j++] = ret;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 		iio_get_time_ns(indio_dev));
 
 done:
@@ -243,35 +247,19 @@ static const struct iio_info tcs3414_info = {
 static int tcs3414_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct tcs3414_data *data = iio_priv(indio_dev);
-	int ret;
-
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret)
-		return ret;
 
 	data->control |= TCS3414_CONTROL_ADC_EN;
-	ret = i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
+	return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
 		data->control);
-	if (ret)
-		iio_triggered_buffer_predisable(indio_dev);
-
-	return ret;
 }
 
 static int tcs3414_buffer_predisable(struct iio_dev *indio_dev)
 {
 	struct tcs3414_data *data = iio_priv(indio_dev);
-	int ret, ret2;
 
 	data->control &= ~TCS3414_CONTROL_ADC_EN;
-	ret = i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
+	return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
 		data->control);
-
-	ret2 = iio_triggered_buffer_predisable(indio_dev);
-	if (!ret)
-		ret = ret2;
-
-	return ret;
 }
 
 static const struct iio_buffer_setup_ops tcs3414_buffer_setup_ops = {
@@ -279,6 +267,18 @@ static const struct iio_buffer_setup_ops tcs3414_buffer_setup_ops = {
 	.predisable = tcs3414_buffer_predisable,
 };
 
+static int tcs3414_powerdown(struct tcs3414_data *data)
+{
+	return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
+		data->control & ~(TCS3414_CONTROL_POWER |
+		TCS3414_CONTROL_ADC_EN));
+}
+
+static void tcs3414_powerdown_cleanup(void *data)
+{
+	tcs3414_powerdown(data);
+}
+
 static int tcs3414_probe(struct i2c_client *client,
 			   const struct i2c_device_id *id)
 {
@@ -294,7 +294,6 @@ static int tcs3414_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &tcs3414_info;
 	indio_dev->name = TCS3414_DRV_NAME;
 	indio_dev->channels = tcs3414_channels;
@@ -322,6 +321,11 @@ static int tcs3414_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
+	ret = devm_add_action_or_reset(&client->dev, tcs3414_powerdown_cleanup,
+				       data);
+	if (ret < 0)
+		return ret;
+
 	data->timing = TCS3414_INTEG_12MS; /* free running */
 	ret = i2c_smbus_write_byte_data(data->client, TCS3414_TIMING,
 		data->timing);
@@ -333,41 +337,14 @@ static int tcs3414_probe(struct i2c_client *client,
 		return ret;
 	data->gain = ret;
 
-	ret = iio_triggered_buffer_setup(indio_dev, NULL,
+	ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev, NULL,
 		tcs3414_trigger_handler, &tcs3414_buffer_setup_ops);
 	if (ret < 0)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
-	if (ret < 0)
-		goto buffer_cleanup;
-
-	return 0;
-
-buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-	return ret;
-}
-
-static int tcs3414_powerdown(struct tcs3414_data *data)
-{
-	return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
-		data->control & ~(TCS3414_CONTROL_POWER |
-		TCS3414_CONTROL_ADC_EN));
-}
-
-static int tcs3414_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
-	iio_triggered_buffer_cleanup(indio_dev);
-	tcs3414_powerdown(iio_priv(indio_dev));
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tcs3414_suspend(struct device *dev)
 {
 	struct tcs3414_data *data = iio_priv(i2c_get_clientdata(
@@ -382,9 +359,9 @@ static int tcs3414_resume(struct device *dev)
 	return i2c_smbus_write_byte_data(data->client, TCS3414_CONTROL,
 		data->control);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(tcs3414_pm_ops, tcs3414_suspend, tcs3414_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(tcs3414_pm_ops, tcs3414_suspend,
+				tcs3414_resume);
 
 static const struct i2c_device_id tcs3414_id[] = {
 	{ "tcs3414", 0 },
@@ -395,10 +372,9 @@ MODULE_DEVICE_TABLE(i2c, tcs3414_id);
 static struct i2c_driver tcs3414_driver = {
 	.driver = {
 		.name	= TCS3414_DRV_NAME,
-		.pm	= &tcs3414_pm_ops,
+		.pm	= pm_sleep_ptr(&tcs3414_pm_ops),
 	},
 	.probe		= tcs3414_probe,
-	.remove		= tcs3414_remove,
 	.id_table	= tcs3414_id,
 };
 module_i2c_driver(tcs3414_driver);
diff --git a/drivers/iio/light/tcs3472.c b/drivers/iio/light/tcs3472.c
index 12ad34441010..db17fec634be 100644
--- a/drivers/iio/light/tcs3472.c
+++ b/drivers/iio/light/tcs3472.c
@@ -64,7 +64,11 @@ struct tcs3472_data {
 	u8 control;
 	u8 atime;
 	u8 apers;
-	u16 buffer[8]; /* 4 16-bit channels + 64-bit timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u16 chans[4];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 static const struct iio_event_spec tcs3472_events[] = {
@@ -386,10 +390,10 @@ static irqreturn_t tcs3472_trigger_handler(int irq, void *p)
 		if (ret < 0)
 			goto done;
 
-		data->buffer[j++] = ret;
+		data->scan.chans[j++] = ret;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 		iio_get_time_ns(indio_dev));
 
 done:
@@ -454,7 +458,6 @@ static int tcs3472_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &tcs3472_info;
 	indio_dev->name = TCS3472_DRV_NAME;
 	indio_dev->channels = tcs3472_channels;
@@ -532,7 +535,8 @@ static int tcs3472_probe(struct i2c_client *client,
 	return 0;
 
 free_irq:
-	free_irq(client->irq, indio_dev);
+	if (client->irq)
+		free_irq(client->irq, indio_dev);
 buffer_cleanup:
 	iio_triggered_buffer_cleanup(indio_dev);
 	return ret;
@@ -555,19 +559,17 @@ static int tcs3472_powerdown(struct tcs3472_data *data)
 	return ret;
 }
 
-static int tcs3472_remove(struct i2c_client *client)
+static void tcs3472_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
-	free_irq(client->irq, indio_dev);
+	if (client->irq)
+		free_irq(client->irq, indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	tcs3472_powerdown(iio_priv(indio_dev));
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tcs3472_suspend(struct device *dev)
 {
 	struct tcs3472_data *data = iio_priv(i2c_get_clientdata(
@@ -593,9 +595,9 @@ static int tcs3472_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(tcs3472_pm_ops, tcs3472_suspend, tcs3472_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(tcs3472_pm_ops, tcs3472_suspend,
+				tcs3472_resume);
 
 static const struct i2c_device_id tcs3472_id[] = {
 	{ "tcs3472", 0 },
@@ -606,7 +608,7 @@ MODULE_DEVICE_TABLE(i2c, tcs3472_id);
 static struct i2c_driver tcs3472_driver = {
 	.driver = {
 		.name	= TCS3472_DRV_NAME,
-		.pm	= &tcs3472_pm_ops,
+		.pm	= pm_sleep_ptr(&tcs3472_pm_ops),
 	},
 	.probe		= tcs3472_probe,
 	.remove		= tcs3472_remove,
diff --git a/drivers/iio/light/tsl2563.c b/drivers/iio/light/tsl2563.c
index d8c40a83097d..951f35ef3f41 100644
--- a/drivers/iio/light/tsl2563.c
+++ b/drivers/iio/light/tsl2563.c
@@ -12,6 +12,8 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
 #include <linux/irq.h>
@@ -69,7 +71,7 @@
 #define TSL2563_TIMING_GAIN16	0x10
 #define TSL2563_TIMING_GAIN1	0x00
 
-#define TSL2563_INT_DISBLED	0x00
+#define TSL2563_INT_DISABLED	0x00
 #define TSL2563_INT_LEVEL	0x10
 #define TSL2563_INT_PERSIST(n)	((n) & 0x0F)
 
@@ -308,7 +310,7 @@ static int tsl2563_get_adc(struct tsl2563_chip *chip)
 		goto out;
 
 	if (!chip->int_enabled) {
-		cancel_delayed_work(&chip->poweroff_work);
+		cancel_delayed_work_sync(&chip->poweroff_work);
 
 		if (!tsl2563_get_power(chip)) {
 			ret = tsl2563_set_power(chip, 1);
@@ -636,7 +638,7 @@ static int tsl2563_write_interrupt_config(struct iio_dev *indio_dev,
 		chip->intr &= ~0x30;
 		chip->intr |= 0x10;
 		/* ensure the chip is actually on */
-		cancel_delayed_work(&chip->poweroff_work);
+		cancel_delayed_work_sync(&chip->poweroff_work);
 		if (!tsl2563_get_power(chip)) {
 			ret = tsl2563_set_power(chip, 1);
 			if (ret)
@@ -703,7 +705,6 @@ static int tsl2563_probe(struct i2c_client *client,
 	struct iio_dev *indio_dev;
 	struct tsl2563_chip *chip;
 	struct tsl2563_platform_data *pdata = client->dev.platform_data;
-	struct device_node *np = client->dev.of_node;
 	int err = 0;
 	u8 id = 0;
 
@@ -713,7 +714,7 @@ static int tsl2563_probe(struct i2c_client *client,
 
 	chip = iio_priv(indio_dev);
 
-	i2c_set_clientdata(client, chip);
+	i2c_set_clientdata(client, indio_dev);
 	chip->client = client;
 
 	err = tsl2563_detect(chip);
@@ -738,19 +739,19 @@ static int tsl2563_probe(struct i2c_client *client,
 	chip->calib0 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS);
 	chip->calib1 = tsl2563_calib_from_sysfs(CALIB_BASE_SYSFS);
 
-	if (pdata)
+	if (pdata) {
 		chip->cover_comp_gain = pdata->cover_comp_gain;
-	else if (np)
-		of_property_read_u32(np, "amstaos,cover-comp-gain",
-				     &chip->cover_comp_gain);
-	else
-		chip->cover_comp_gain = 1;
+	} else {
+		err = device_property_read_u32(&client->dev, "amstaos,cover-comp-gain",
+					       &chip->cover_comp_gain);
+		if (err)
+			chip->cover_comp_gain = 1;
+	}
 
 	dev_info(&client->dev, "model %d, rev. %d\n", id >> 4, id & 0x0f);
 	indio_dev->name = client->name;
 	indio_dev->channels = tsl2563_channels;
 	indio_dev->num_channels = ARRAY_SIZE(tsl2563_channels);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	if (client->irq)
@@ -795,28 +796,25 @@ fail:
 	return err;
 }
 
-static int tsl2563_remove(struct i2c_client *client)
+static void tsl2563_remove(struct i2c_client *client)
 {
-	struct tsl2563_chip *chip = i2c_get_clientdata(client);
-	struct iio_dev *indio_dev = iio_priv_to_dev(chip);
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct tsl2563_chip *chip = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	if (!chip->int_enabled)
-		cancel_delayed_work(&chip->poweroff_work);
+		cancel_delayed_work_sync(&chip->poweroff_work);
 	/* Ensure that interrupts are disabled - then flush any bottom halves */
 	chip->intr &= ~0x30;
 	i2c_smbus_write_byte_data(chip->client, TSL2563_CMD | TSL2563_REG_INT,
 				  chip->intr);
-	flush_scheduled_work();
 	tsl2563_set_power(chip, 0);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tsl2563_suspend(struct device *dev)
 {
-	struct tsl2563_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct tsl2563_chip *chip = iio_priv(indio_dev);
 	int ret;
 
 	mutex_lock(&chip->lock);
@@ -834,7 +832,8 @@ out:
 
 static int tsl2563_resume(struct device *dev)
 {
-	struct tsl2563_chip *chip = i2c_get_clientdata(to_i2c_client(dev));
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct tsl2563_chip *chip = iio_priv(indio_dev);
 	int ret;
 
 	mutex_lock(&chip->lock);
@@ -854,11 +853,8 @@ out:
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(tsl2563_pm_ops, tsl2563_suspend, tsl2563_resume);
-#define TSL2563_PM_OPS (&tsl2563_pm_ops)
-#else
-#define TSL2563_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(tsl2563_pm_ops, tsl2563_suspend,
+				tsl2563_resume);
 
 static const struct i2c_device_id tsl2563_id[] = {
 	{ "tsl2560", 0 },
@@ -882,7 +878,7 @@ static struct i2c_driver tsl2563_i2c_driver = {
 	.driver = {
 		.name	 = "tsl2563",
 		.of_match_table = tsl2563_of_match,
-		.pm	= TSL2563_PM_OPS,
+		.pm	= pm_sleep_ptr(&tsl2563_pm_ops),
 	},
 	.probe		= tsl2563_probe,
 	.remove		= tsl2563_remove,
diff --git a/drivers/iio/light/tsl2583.c b/drivers/iio/light/tsl2583.c
index a760d14e146a..7bcb5c718922 100644
--- a/drivers/iio/light/tsl2583.c
+++ b/drivers/iio/light/tsl2583.c
@@ -285,7 +285,7 @@ static int tsl2583_get_lux(struct iio_dev *indio_dev)
 	lux64 = lux64 * chip->als_settings.als_gain_trim;
 	lux64 >>= 13;
 	lux = lux64;
-	lux = (lux + 500) / 1000;
+	lux = DIV_ROUND_CLOSEST(lux, 1000);
 
 	if (lux > TSL2583_LUX_CALC_OVER_FLOW) { /* check for overflow */
 return_max:
@@ -341,6 +341,14 @@ static int tsl2583_als_calibrate(struct iio_dev *indio_dev)
 		return lux_val;
 	}
 
+	/* Avoid division by zero of lux_value later on */
+	if (lux_val == 0) {
+		dev_err(&chip->client->dev,
+			"%s: lux_val of 0 will produce out of range trim_value\n",
+			__func__);
+		return -ENODATA;
+	}
+
 	gain_trim_val = (unsigned int)(((chip->als_settings.als_cal_target)
 			* chip->als_settings.als_gain_trim) / lux_val);
 	if ((gain_trim_val < 250) || (gain_trim_val > 4000)) {
@@ -361,12 +369,12 @@ static int tsl2583_set_als_time(struct tsl2583_chip *chip)
 	u8 val;
 
 	/* determine als integration register */
-	als_count = (chip->als_settings.als_time * 100 + 135) / 270;
+	als_count = DIV_ROUND_CLOSEST(chip->als_settings.als_time * 100, 270);
 	if (!als_count)
 		als_count = 1; /* ensure at least one cycle */
 
 	/* convert back to time (encompasses overrides) */
-	als_time = (als_count * 27 + 5) / 10;
+	als_time = DIV_ROUND_CLOSEST(als_count * 27, 10);
 
 	val = 256 - als_count;
 	ret = i2c_smbus_write_byte_data(chip->client,
@@ -380,7 +388,7 @@ static int tsl2583_set_als_time(struct tsl2583_chip *chip)
 
 	/* set chip struct re scaling and saturation */
 	chip->als_saturation = als_count * 922; /* 90% of full scale */
-	chip->als_time_scale = (als_time + 25) / 50;
+	chip->als_time_scale = DIV_ROUND_CLOSEST(als_time, 50);
 
 	return ret;
 }
@@ -636,9 +644,7 @@ static int tsl2583_set_pm_runtime_busy(struct tsl2583_chip *chip, bool on)
 	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(&chip->client->dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(&chip->client->dev);
+		ret = pm_runtime_resume_and_get(&chip->client->dev);
 	} else {
 		pm_runtime_mark_last_busy(&chip->client->dev);
 		ret = pm_runtime_put_autosuspend(&chip->client->dev);
@@ -721,8 +727,10 @@ static int tsl2583_read_raw(struct iio_dev *indio_dev,
 read_done:
 	mutex_unlock(&chip->als_mutex);
 
-	if (ret < 0)
+	if (ret < 0) {
+		tsl2583_set_pm_runtime_busy(chip, false);
 		return ret;
+	}
 
 	/*
 	 * Preserve the ret variable if the call to
@@ -783,8 +791,10 @@ static int tsl2583_write_raw(struct iio_dev *indio_dev,
 
 	mutex_unlock(&chip->als_mutex);
 
-	if (ret < 0)
+	if (ret < 0) {
+		tsl2583_set_pm_runtime_busy(chip, false);
 		return ret;
+	}
 
 	ret = tsl2583_set_pm_runtime_busy(chip, false);
 	if (ret < 0)
@@ -840,7 +850,6 @@ static int tsl2583_probe(struct i2c_client *clientp,
 	indio_dev->info = &tsl2583_info;
 	indio_dev->channels = tsl2583_channels;
 	indio_dev->num_channels = ARRAY_SIZE(tsl2583_channels);
-	indio_dev->dev.parent = &clientp->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->name = chip->client->name;
 
@@ -849,7 +858,7 @@ static int tsl2583_probe(struct i2c_client *clientp,
 					 TSL2583_POWER_OFF_DELAY_MS);
 	pm_runtime_use_autosuspend(&clientp->dev);
 
-	ret = devm_iio_device_register(indio_dev->dev.parent, indio_dev);
+	ret = iio_device_register(indio_dev);
 	if (ret) {
 		dev_err(&clientp->dev, "%s: iio registration failed\n",
 			__func__);
@@ -864,7 +873,7 @@ static int tsl2583_probe(struct i2c_client *clientp,
 	return 0;
 }
 
-static int tsl2583_remove(struct i2c_client *client)
+static void tsl2583_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct tsl2583_chip *chip = iio_priv(indio_dev);
@@ -873,12 +882,11 @@ static int tsl2583_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
 
-	return tsl2583_set_power_state(chip, TSL2583_CNTL_PWR_OFF);
+	tsl2583_set_power_state(chip, TSL2583_CNTL_PWR_OFF);
 }
 
-static int __maybe_unused tsl2583_suspend(struct device *dev)
+static int tsl2583_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct tsl2583_chip *chip = iio_priv(indio_dev);
@@ -893,7 +901,7 @@ static int __maybe_unused tsl2583_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused tsl2583_resume(struct device *dev)
+static int tsl2583_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct tsl2583_chip *chip = iio_priv(indio_dev);
@@ -908,11 +916,8 @@ static int __maybe_unused tsl2583_resume(struct device *dev)
 	return ret;
 }
 
-static const struct dev_pm_ops tsl2583_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(tsl2583_suspend, tsl2583_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(tsl2583_pm_ops, tsl2583_suspend,
+				 tsl2583_resume, NULL);
 
 static const struct i2c_device_id tsl2583_idtable[] = {
 	{ "tsl2580", 0 },
@@ -934,7 +939,7 @@ MODULE_DEVICE_TABLE(of, tsl2583_of_match);
 static struct i2c_driver tsl2583_driver = {
 	.driver = {
 		.name = "tsl2583",
-		.pm = &tsl2583_pm_ops,
+		.pm = pm_ptr(&tsl2583_pm_ops),
 		.of_match_table = tsl2583_of_match,
 	},
 	.id_table = tsl2583_idtable,
diff --git a/drivers/iio/light/tsl2591.c b/drivers/iio/light/tsl2591.c
new file mode 100644
index 000000000000..e485a556e6da
--- /dev/null
+++ b/drivers/iio/light/tsl2591.c
@@ -0,0 +1,1223 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2021 Joe Sandom <joe.g.sandom@gmail.com>
+ *
+ * Datasheet: https://ams.com/tsl25911#tab/documents
+ *
+ * Device driver for the TAOS TSL2591. This is a very-high sensitivity
+ * light-to-digital converter that transforms light intensity into a digital
+ * signal.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/debugfs.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/iopoll.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/sysfs.h>
+
+#include <asm/unaligned.h>
+
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/* ADC integration time, field value to time in ms */
+#define TSL2591_FVAL_TO_MSEC(x) (((x) + 1) * 100)
+/* ADC integration time, field value to time in seconds */
+#define TSL2591_FVAL_TO_SEC(x) ((x) + 1)
+/* ADC integration time, time in seconds to field value */
+#define TSL2591_SEC_TO_FVAL(x) ((x) - 1)
+
+/* TSL2591 register set */
+#define TSL2591_ENABLE      0x00
+#define TSL2591_CONTROL     0x01
+#define TSL2591_AILTL       0x04
+#define TSL2591_AILTH       0x05
+#define TSL2591_AIHTL       0x06
+#define TSL2591_AIHTH       0x07
+#define TSL2591_NP_AILTL    0x08
+#define TSL2591_NP_AILTH    0x09
+#define TSL2591_NP_AIHTL    0x0A
+#define TSL2591_NP_AIHTH    0x0B
+#define TSL2591_PERSIST     0x0C
+#define TSL2591_PACKAGE_ID  0x11
+#define TSL2591_DEVICE_ID   0x12
+#define TSL2591_STATUS      0x13
+#define TSL2591_C0_DATAL    0x14
+#define TSL2591_C0_DATAH    0x15
+#define TSL2591_C1_DATAL    0x16
+#define TSL2591_C1_DATAH    0x17
+
+/* TSL2591 command register definitions */
+#define TSL2591_CMD_NOP             0xA0
+#define TSL2591_CMD_SF_INTSET       0xE4
+#define TSL2591_CMD_SF_CALS_I       0xE5
+#define TSL2591_CMD_SF_CALS_NPI     0xE7
+#define TSL2591_CMD_SF_CNP_ALSI     0xEA
+
+/* TSL2591 enable register definitions */
+#define TSL2591_PWR_ON              0x01
+#define TSL2591_PWR_OFF             0x00
+#define TSL2591_ENABLE_ALS          0x02
+#define TSL2591_ENABLE_ALS_INT      0x10
+#define TSL2591_ENABLE_SLEEP_INT    0x40
+#define TSL2591_ENABLE_NP_INT       0x80
+
+/* TSL2591 control register definitions */
+#define TSL2591_CTRL_ALS_INTEGRATION_100MS  0x00
+#define TSL2591_CTRL_ALS_INTEGRATION_200MS  0x01
+#define TSL2591_CTRL_ALS_INTEGRATION_300MS  0x02
+#define TSL2591_CTRL_ALS_INTEGRATION_400MS  0x03
+#define TSL2591_CTRL_ALS_INTEGRATION_500MS  0x04
+#define TSL2591_CTRL_ALS_INTEGRATION_600MS  0x05
+#define TSL2591_CTRL_ALS_LOW_GAIN           0x00
+#define TSL2591_CTRL_ALS_MED_GAIN           0x10
+#define TSL2591_CTRL_ALS_HIGH_GAIN          0x20
+#define TSL2591_CTRL_ALS_MAX_GAIN           0x30
+#define TSL2591_CTRL_SYS_RESET              0x80
+
+/* TSL2591 persist register definitions */
+#define TSL2591_PRST_ALS_INT_CYCLE_0        0x00
+#define TSL2591_PRST_ALS_INT_CYCLE_ANY      0x01
+#define TSL2591_PRST_ALS_INT_CYCLE_2        0x02
+#define TSL2591_PRST_ALS_INT_CYCLE_3        0x03
+#define TSL2591_PRST_ALS_INT_CYCLE_5        0x04
+#define TSL2591_PRST_ALS_INT_CYCLE_10       0x05
+#define TSL2591_PRST_ALS_INT_CYCLE_15       0x06
+#define TSL2591_PRST_ALS_INT_CYCLE_20       0x07
+#define TSL2591_PRST_ALS_INT_CYCLE_25       0x08
+#define TSL2591_PRST_ALS_INT_CYCLE_30       0x09
+#define TSL2591_PRST_ALS_INT_CYCLE_35       0x0A
+#define TSL2591_PRST_ALS_INT_CYCLE_40       0x0B
+#define TSL2591_PRST_ALS_INT_CYCLE_45       0x0C
+#define TSL2591_PRST_ALS_INT_CYCLE_50       0x0D
+#define TSL2591_PRST_ALS_INT_CYCLE_55       0x0E
+#define TSL2591_PRST_ALS_INT_CYCLE_60       0x0F
+#define TSL2591_PRST_ALS_INT_CYCLE_MAX      (BIT(4) - 1)
+
+/* TSL2591 PID register mask */
+#define TSL2591_PACKAGE_ID_MASK  GENMASK(5, 4)
+
+/* TSL2591 ID register mask */
+#define TSL2591_DEVICE_ID_MASK   GENMASK(7, 0)
+
+/* TSL2591 status register masks */
+#define TSL2591_STS_ALS_VALID_MASK   BIT(0)
+#define TSL2591_STS_ALS_INT_MASK     BIT(4)
+#define TSL2591_STS_NPERS_INT_MASK   BIT(5)
+#define TSL2591_STS_VAL_HIGH_MASK    BIT(0)
+
+/* TSL2591 constant values */
+#define TSL2591_PACKAGE_ID_VAL  0x00
+#define TSL2591_DEVICE_ID_VAL   0x50
+
+/* Power off suspend delay time MS */
+#define TSL2591_POWER_OFF_DELAY_MS   2000
+
+/* TSL2591 default values */
+#define TSL2591_DEFAULT_ALS_INT_TIME          TSL2591_CTRL_ALS_INTEGRATION_300MS
+#define TSL2591_DEFAULT_ALS_GAIN              TSL2591_CTRL_ALS_MED_GAIN
+#define TSL2591_DEFAULT_ALS_PERSIST           TSL2591_PRST_ALS_INT_CYCLE_ANY
+#define TSL2591_DEFAULT_ALS_LOWER_THRESH      100
+#define TSL2591_DEFAULT_ALS_UPPER_THRESH      1500
+
+/* TSL2591 number of data registers */
+#define TSL2591_NUM_DATA_REGISTERS     4
+
+/* TSL2591 number of valid status reads on ADC complete */
+#define TSL2591_ALS_STS_VALID_COUNT    10
+
+/* TSL2591 delay period between polls when checking for ALS valid flag */
+#define TSL2591_DELAY_PERIOD_US        10000
+
+/* TSL2591 maximum values */
+#define TSL2591_MAX_ALS_INT_TIME_MS    600
+#define TSL2591_ALS_MAX_VALUE	       (BIT(16) - 1)
+
+/*
+ * LUX calculations;
+ * AGAIN values from Adafruit's TSL2591 Arduino library
+ * https://github.com/adafruit/Adafruit_TSL2591_Library
+ */
+#define TSL2591_CTRL_ALS_LOW_GAIN_MULTIPLIER   1
+#define TSL2591_CTRL_ALS_MED_GAIN_MULTIPLIER   25
+#define TSL2591_CTRL_ALS_HIGH_GAIN_MULTIPLIER  428
+#define TSL2591_CTRL_ALS_MAX_GAIN_MULTIPLIER   9876
+#define TSL2591_LUX_COEFFICIENT                408
+
+struct tsl2591_als_settings {
+	u16 als_lower_thresh;
+	u16 als_upper_thresh;
+	u8 als_int_time;
+	u8 als_persist;
+	u8 als_gain;
+};
+
+struct tsl2591_chip {
+	struct tsl2591_als_settings als_settings;
+	struct i2c_client *client;
+	/*
+	 * Keep als_settings in sync with hardware state
+	 * and ensure multiple readers are serialized.
+	 */
+	struct mutex als_mutex;
+	bool events_enabled;
+};
+
+/*
+ * Period table is ALS persist cycle x integration time setting
+ * Integration times: 100ms, 200ms, 300ms, 400ms, 500ms, 600ms
+ * ALS cycles: 1, 2, 3, 5, 10, 20, 25, 30, 35, 40, 45, 50, 55, 60
+ */
+static const char * const tsl2591_als_period_list[] = {
+	"0.1 0.2 0.3 0.5 1.0 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0",
+	"0.2 0.4 0.6 1.0 2.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0 11.0 12.0",
+	"0.3 0.6 0.9 1.5 3.0 6.0 7.5 9.0 10.5 12.0 13.5 15.0 16.5 18.0",
+	"0.4 0.8 1.2 2.0 4.0 8.0 10.0 12.0 14.0 16.0 18.0 20.0 22.0 24.0",
+	"0.5 1.0 1.5 2.5 5.0 10.0 12.5 15.0 17.5 20.0 22.5 25.0 27.5 30.0",
+	"0.6 1.2 1.8 3.0 6.0 12.0 15.0 18.0 21.0 24.0 27.0 30.0 33.0 36.0",
+};
+
+static const int tsl2591_int_time_available[] = {
+	1, 2, 3, 4, 5, 6,
+};
+
+static const int tsl2591_calibscale_available[] = {
+	1, 25, 428, 9876,
+};
+
+static int tsl2591_set_als_lower_threshold(struct tsl2591_chip *chip,
+					   u16 als_lower_threshold);
+static int tsl2591_set_als_upper_threshold(struct tsl2591_chip *chip,
+					   u16 als_upper_threshold);
+
+static int tsl2591_gain_to_multiplier(const u8 als_gain)
+{
+	switch (als_gain) {
+	case TSL2591_CTRL_ALS_LOW_GAIN:
+		return TSL2591_CTRL_ALS_LOW_GAIN_MULTIPLIER;
+	case TSL2591_CTRL_ALS_MED_GAIN:
+		return TSL2591_CTRL_ALS_MED_GAIN_MULTIPLIER;
+	case TSL2591_CTRL_ALS_HIGH_GAIN:
+		return TSL2591_CTRL_ALS_HIGH_GAIN_MULTIPLIER;
+	case TSL2591_CTRL_ALS_MAX_GAIN:
+		return TSL2591_CTRL_ALS_MAX_GAIN_MULTIPLIER;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_multiplier_to_gain(const u32 multiplier)
+{
+	switch (multiplier) {
+	case TSL2591_CTRL_ALS_LOW_GAIN_MULTIPLIER:
+		return TSL2591_CTRL_ALS_LOW_GAIN;
+	case TSL2591_CTRL_ALS_MED_GAIN_MULTIPLIER:
+		return TSL2591_CTRL_ALS_MED_GAIN;
+	case TSL2591_CTRL_ALS_HIGH_GAIN_MULTIPLIER:
+		return TSL2591_CTRL_ALS_HIGH_GAIN;
+	case TSL2591_CTRL_ALS_MAX_GAIN_MULTIPLIER:
+		return TSL2591_CTRL_ALS_MAX_GAIN;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_persist_cycle_to_lit(const u8 als_persist)
+{
+	switch (als_persist) {
+	case TSL2591_PRST_ALS_INT_CYCLE_ANY:
+		return 1;
+	case TSL2591_PRST_ALS_INT_CYCLE_2:
+		return 2;
+	case TSL2591_PRST_ALS_INT_CYCLE_3:
+		return 3;
+	case TSL2591_PRST_ALS_INT_CYCLE_5:
+		return 5;
+	case TSL2591_PRST_ALS_INT_CYCLE_10:
+		return 10;
+	case TSL2591_PRST_ALS_INT_CYCLE_15:
+		return 15;
+	case TSL2591_PRST_ALS_INT_CYCLE_20:
+		return 20;
+	case TSL2591_PRST_ALS_INT_CYCLE_25:
+		return 25;
+	case TSL2591_PRST_ALS_INT_CYCLE_30:
+		return 30;
+	case TSL2591_PRST_ALS_INT_CYCLE_35:
+		return 35;
+	case TSL2591_PRST_ALS_INT_CYCLE_40:
+		return 40;
+	case TSL2591_PRST_ALS_INT_CYCLE_45:
+		return 45;
+	case TSL2591_PRST_ALS_INT_CYCLE_50:
+		return 50;
+	case TSL2591_PRST_ALS_INT_CYCLE_55:
+		return 55;
+	case TSL2591_PRST_ALS_INT_CYCLE_60:
+		return 60;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_persist_lit_to_cycle(const u8 als_persist)
+{
+	switch (als_persist) {
+	case 1:
+		return TSL2591_PRST_ALS_INT_CYCLE_ANY;
+	case 2:
+		return TSL2591_PRST_ALS_INT_CYCLE_2;
+	case 3:
+		return TSL2591_PRST_ALS_INT_CYCLE_3;
+	case 5:
+		return TSL2591_PRST_ALS_INT_CYCLE_5;
+	case 10:
+		return TSL2591_PRST_ALS_INT_CYCLE_10;
+	case 15:
+		return TSL2591_PRST_ALS_INT_CYCLE_15;
+	case 20:
+		return TSL2591_PRST_ALS_INT_CYCLE_20;
+	case 25:
+		return TSL2591_PRST_ALS_INT_CYCLE_25;
+	case 30:
+		return TSL2591_PRST_ALS_INT_CYCLE_30;
+	case 35:
+		return TSL2591_PRST_ALS_INT_CYCLE_35;
+	case 40:
+		return TSL2591_PRST_ALS_INT_CYCLE_40;
+	case 45:
+		return TSL2591_PRST_ALS_INT_CYCLE_45;
+	case 50:
+		return TSL2591_PRST_ALS_INT_CYCLE_50;
+	case 55:
+		return TSL2591_PRST_ALS_INT_CYCLE_55;
+	case 60:
+		return TSL2591_PRST_ALS_INT_CYCLE_60;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_compatible_int_time(struct tsl2591_chip *chip,
+				       const u32 als_integration_time)
+{
+	switch (als_integration_time) {
+	case TSL2591_CTRL_ALS_INTEGRATION_100MS:
+	case TSL2591_CTRL_ALS_INTEGRATION_200MS:
+	case TSL2591_CTRL_ALS_INTEGRATION_300MS:
+	case TSL2591_CTRL_ALS_INTEGRATION_400MS:
+	case TSL2591_CTRL_ALS_INTEGRATION_500MS:
+	case TSL2591_CTRL_ALS_INTEGRATION_600MS:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_als_time_to_fval(const u32 als_integration_time)
+{
+	int i;
+
+	for (i = 0; i < ARRAY_SIZE(tsl2591_int_time_available); i++) {
+		if (als_integration_time == tsl2591_int_time_available[i])
+			return TSL2591_SEC_TO_FVAL(als_integration_time);
+	}
+
+	return -EINVAL;
+}
+
+static int tsl2591_compatible_gain(struct tsl2591_chip *chip, const u8 als_gain)
+{
+	switch (als_gain) {
+	case TSL2591_CTRL_ALS_LOW_GAIN:
+	case TSL2591_CTRL_ALS_MED_GAIN:
+	case TSL2591_CTRL_ALS_HIGH_GAIN:
+	case TSL2591_CTRL_ALS_MAX_GAIN:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_compatible_als_persist_cycle(struct tsl2591_chip *chip,
+						const u32 als_persist)
+{
+	switch (als_persist) {
+	case TSL2591_PRST_ALS_INT_CYCLE_ANY:
+	case TSL2591_PRST_ALS_INT_CYCLE_2:
+	case TSL2591_PRST_ALS_INT_CYCLE_3:
+	case TSL2591_PRST_ALS_INT_CYCLE_5:
+	case TSL2591_PRST_ALS_INT_CYCLE_10:
+	case TSL2591_PRST_ALS_INT_CYCLE_15:
+	case TSL2591_PRST_ALS_INT_CYCLE_20:
+	case TSL2591_PRST_ALS_INT_CYCLE_25:
+	case TSL2591_PRST_ALS_INT_CYCLE_30:
+	case TSL2591_PRST_ALS_INT_CYCLE_35:
+	case TSL2591_PRST_ALS_INT_CYCLE_40:
+	case TSL2591_PRST_ALS_INT_CYCLE_45:
+	case TSL2591_PRST_ALS_INT_CYCLE_50:
+	case TSL2591_PRST_ALS_INT_CYCLE_55:
+	case TSL2591_PRST_ALS_INT_CYCLE_60:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_check_als_valid(struct i2c_client *client)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(client, TSL2591_CMD_NOP | TSL2591_STATUS);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to read register\n");
+		return -EINVAL;
+	}
+
+	return FIELD_GET(TSL2591_STS_ALS_VALID_MASK, ret);
+}
+
+static int tsl2591_wait_adc_complete(struct tsl2591_chip *chip)
+{
+	struct tsl2591_als_settings settings = chip->als_settings;
+	struct i2c_client *client = chip->client;
+	int delay;
+	int val;
+	int ret;
+
+	delay = TSL2591_FVAL_TO_MSEC(settings.als_int_time);
+	if (!delay)
+		return -EINVAL;
+
+	/*
+	 * Sleep for ALS integration time to allow enough time or an ADC read
+	 * cycle to complete. Check status after delay for ALS valid.
+	 */
+	msleep(delay);
+
+	/* Check for status ALS valid flag for up to 100ms */
+	ret = readx_poll_timeout(tsl2591_check_als_valid, client,
+				 val, val == TSL2591_STS_VAL_HIGH_MASK,
+				 TSL2591_DELAY_PERIOD_US,
+				 TSL2591_DELAY_PERIOD_US * TSL2591_ALS_STS_VALID_COUNT);
+	if (ret)
+		dev_err(&client->dev, "Timed out waiting for valid ALS data\n");
+
+	return ret;
+}
+
+/*
+ * tsl2591_read_channel_data - Reads raw channel data and calculates lux
+ *
+ * Formula for lux calculation;
+ * Derived from Adafruit's TSL2591 library
+ * Link: https://github.com/adafruit/Adafruit_TSL2591_Library
+ * Counts Per Lux (CPL) = (ATIME_ms * AGAIN) / LUX DF
+ * lux = ((C0DATA - C1DATA) * (1 - (C1DATA / C0DATA))) / CPL
+ *
+ * Scale values to get more representative value of lux i.e.
+ * lux = ((C0DATA - C1DATA) * (1000 - ((C1DATA * 1000) / C0DATA))) / CPL
+ *
+ * Channel 0 = IR + Visible
+ * Channel 1 = IR only
+ */
+static int tsl2591_read_channel_data(struct iio_dev *indio_dev,
+				     struct iio_chan_spec const *chan,
+				     int *val, int *val2)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	struct tsl2591_als_settings *settings = &chip->als_settings;
+	struct i2c_client *client = chip->client;
+	u8 als_data[TSL2591_NUM_DATA_REGISTERS];
+	int counts_per_lux, int_time_fval, gain_multi, lux;
+	u16 als_ch0, als_ch1;
+	int ret;
+
+	ret = tsl2591_wait_adc_complete(chip);
+	if (ret < 0) {
+		dev_err(&client->dev, "No data available. Err: %d\n", ret);
+		return ret;
+	}
+
+	ret = i2c_smbus_read_i2c_block_data(client,
+					    TSL2591_CMD_NOP | TSL2591_C0_DATAL,
+					    sizeof(als_data), als_data);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to read data bytes");
+		return ret;
+	}
+
+	als_ch0 = get_unaligned_le16(&als_data[0]);
+	als_ch1 = get_unaligned_le16(&als_data[2]);
+
+	switch (chan->type) {
+	case IIO_INTENSITY:
+		if (chan->channel2 == IIO_MOD_LIGHT_BOTH)
+			*val = als_ch0;
+		else if (chan->channel2 == IIO_MOD_LIGHT_IR)
+			*val = als_ch1;
+		else
+			return -EINVAL;
+		break;
+	case IIO_LIGHT:
+		gain_multi = tsl2591_gain_to_multiplier(settings->als_gain);
+		if (gain_multi < 0) {
+			dev_err(&client->dev, "Invalid multiplier");
+			return gain_multi;
+		}
+
+		int_time_fval = TSL2591_FVAL_TO_MSEC(settings->als_int_time);
+		/* Calculate counts per lux value */
+		counts_per_lux = (int_time_fval * gain_multi) / TSL2591_LUX_COEFFICIENT;
+
+		dev_dbg(&client->dev, "Counts Per Lux: %d\n", counts_per_lux);
+
+		/* Calculate lux value */
+		lux = ((als_ch0 - als_ch1) *
+		       (1000 - ((als_ch1 * 1000) / als_ch0))) / counts_per_lux;
+
+		dev_dbg(&client->dev, "Raw lux calculation: %d\n", lux);
+
+		/* Divide by 1000 to get real lux value before scaling */
+		*val = lux / 1000;
+
+		/* Get the decimal part of lux reading */
+		*val2 = (lux - (*val * 1000)) * 1000;
+
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int tsl2591_set_als_gain_int_time(struct tsl2591_chip *chip)
+{
+	struct tsl2591_als_settings als_settings = chip->als_settings;
+	struct i2c_client *client = chip->client;
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_CONTROL,
+					als_settings.als_int_time | als_settings.als_gain);
+	if (ret)
+		dev_err(&client->dev, "Failed to set als gain & int time\n");
+
+	return ret;
+}
+
+static int tsl2591_set_als_lower_threshold(struct tsl2591_chip *chip,
+					   u16 als_lower_threshold)
+{
+	struct tsl2591_als_settings als_settings = chip->als_settings;
+	struct i2c_client *client = chip->client;
+	u16 als_upper_threshold;
+	u8 als_lower_l;
+	u8 als_lower_h;
+	int ret;
+
+	chip->als_settings.als_lower_thresh = als_lower_threshold;
+
+	/*
+	 * Lower threshold should not be greater or equal to upper.
+	 * If this is the case, then assert upper threshold to new lower
+	 * threshold + 1 to avoid ordering issues when setting thresholds.
+	 */
+	if (als_lower_threshold >= als_settings.als_upper_thresh) {
+		als_upper_threshold = als_lower_threshold + 1;
+		tsl2591_set_als_upper_threshold(chip, als_upper_threshold);
+	}
+
+	als_lower_l = als_lower_threshold;
+	als_lower_h = als_lower_threshold >> 8;
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_AILTL,
+					als_lower_l);
+	if (ret) {
+		dev_err(&client->dev, "Failed to set als lower threshold\n");
+		return ret;
+	}
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_AILTH,
+					als_lower_h);
+	if (ret) {
+		dev_err(&client->dev, "Failed to set als lower threshold\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tsl2591_set_als_upper_threshold(struct tsl2591_chip *chip,
+					   u16 als_upper_threshold)
+{
+	struct tsl2591_als_settings als_settings = chip->als_settings;
+	struct i2c_client *client = chip->client;
+	u16 als_lower_threshold;
+	u8 als_upper_l;
+	u8 als_upper_h;
+	int ret;
+
+	if (als_upper_threshold > TSL2591_ALS_MAX_VALUE)
+		return -EINVAL;
+
+	chip->als_settings.als_upper_thresh = als_upper_threshold;
+
+	/*
+	 * Upper threshold should not be less than lower. If this
+	 * is the case, then assert lower threshold to new upper
+	 * threshold - 1 to avoid ordering issues when setting thresholds.
+	 */
+	if (als_upper_threshold < als_settings.als_lower_thresh) {
+		als_lower_threshold = als_upper_threshold - 1;
+		tsl2591_set_als_lower_threshold(chip, als_lower_threshold);
+	}
+
+	als_upper_l = als_upper_threshold;
+	als_upper_h = als_upper_threshold >> 8;
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_AIHTL,
+					als_upper_l);
+	if (ret) {
+		dev_err(&client->dev, "Failed to set als upper threshold\n");
+		return ret;
+	}
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_AIHTH,
+					als_upper_h);
+	if (ret) {
+		dev_err(&client->dev, "Failed to set als upper threshold\n");
+		return ret;
+	}
+
+	return 0;
+}
+
+static int tsl2591_set_als_persist_cycle(struct tsl2591_chip *chip,
+					 u8 als_persist)
+{
+	struct i2c_client *client = chip->client;
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_PERSIST,
+					als_persist);
+	if (ret)
+		dev_err(&client->dev, "Failed to set als persist cycle\n");
+
+	chip->als_settings.als_persist = als_persist;
+
+	return ret;
+}
+
+static int tsl2591_set_power_state(struct tsl2591_chip *chip, u8 state)
+{
+	struct i2c_client *client = chip->client;
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(client,
+					TSL2591_CMD_NOP | TSL2591_ENABLE,
+					state);
+	if (ret)
+		dev_err(&client->dev,
+			"Failed to set the power state to %#04x\n", state);
+
+	return ret;
+}
+
+static ssize_t tsl2591_in_illuminance_period_available_show(struct device *dev,
+							    struct device_attribute *attr,
+							    char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+
+	return sysfs_emit(buf, "%s\n",
+		       tsl2591_als_period_list[chip->als_settings.als_int_time]);
+}
+
+static IIO_DEVICE_ATTR_RO(tsl2591_in_illuminance_period_available, 0);
+
+static struct attribute *tsl2591_event_attrs_ctrl[] = {
+	&iio_dev_attr_tsl2591_in_illuminance_period_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group tsl2591_event_attribute_group = {
+	.attrs = tsl2591_event_attrs_ctrl,
+};
+
+static const struct iio_event_spec tsl2591_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_PERIOD) |
+				BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec tsl2591_channels[] = {
+	{
+		.type = IIO_INTENSITY,
+		.modified = 1,
+		.channel2 = IIO_MOD_LIGHT_IR,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_CALIBSCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_CALIBSCALE)
+	},
+	{
+		.type = IIO_INTENSITY,
+		.modified = 1,
+		.channel2 = IIO_MOD_LIGHT_BOTH,
+		.event_spec = tsl2591_events,
+		.num_event_specs = ARRAY_SIZE(tsl2591_events),
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_CALIBSCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_CALIBSCALE)
+	},
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.info_mask_shared_by_all_available = BIT(IIO_CHAN_INFO_INT_TIME) |
+						     BIT(IIO_CHAN_INFO_CALIBSCALE),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_INT_TIME) |
+					   BIT(IIO_CHAN_INFO_CALIBSCALE)
+	},
+};
+
+static int tsl2591_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2, long mask)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	struct i2c_client *client = chip->client;
+	int ret;
+
+	pm_runtime_get_sync(&client->dev);
+
+	mutex_lock(&chip->als_mutex);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (chan->type != IIO_INTENSITY) {
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+
+		ret = tsl2591_read_channel_data(indio_dev, chan, val, val2);
+		if (ret < 0)
+			goto err_unlock;
+
+		ret = IIO_VAL_INT;
+		break;
+	case IIO_CHAN_INFO_PROCESSED:
+		if (chan->type != IIO_LIGHT) {
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+
+		ret = tsl2591_read_channel_data(indio_dev, chan, val, val2);
+		if (ret < 0)
+			break;
+
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	case IIO_CHAN_INFO_INT_TIME:
+		if (chan->type != IIO_INTENSITY) {
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+
+		*val = TSL2591_FVAL_TO_SEC(chip->als_settings.als_int_time);
+		ret = IIO_VAL_INT;
+		break;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		if (chan->type != IIO_INTENSITY) {
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+
+		*val = tsl2591_gain_to_multiplier(chip->als_settings.als_gain);
+		ret = IIO_VAL_INT;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+err_unlock:
+	mutex_unlock(&chip->als_mutex);
+
+	pm_runtime_mark_last_busy(&client->dev);
+	pm_runtime_put_autosuspend(&client->dev);
+
+	return ret;
+}
+
+static int tsl2591_write_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int val, int val2, long mask)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	int int_time;
+	int gain;
+	int ret;
+
+	mutex_lock(&chip->als_mutex);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		int_time = tsl2591_als_time_to_fval(val);
+		if (int_time < 0) {
+			ret = int_time;
+			goto err_unlock;
+		}
+		ret = tsl2591_compatible_int_time(chip, int_time);
+		if (ret < 0)
+			goto err_unlock;
+
+		chip->als_settings.als_int_time = int_time;
+		break;
+	case IIO_CHAN_INFO_CALIBSCALE:
+		gain = tsl2591_multiplier_to_gain(val);
+		if (gain < 0) {
+			ret = gain;
+			goto err_unlock;
+		}
+		ret = tsl2591_compatible_gain(chip, gain);
+		if (ret < 0)
+			goto err_unlock;
+
+		chip->als_settings.als_gain = gain;
+		break;
+	default:
+		ret = -EINVAL;
+		goto err_unlock;
+	}
+
+	ret = tsl2591_set_als_gain_int_time(chip);
+
+err_unlock:
+	mutex_unlock(&chip->als_mutex);
+	return ret;
+}
+
+static int tsl2591_read_available(struct iio_dev *indio_dev,
+				  struct iio_chan_spec const *chan,
+				  const int **vals, int *type, int *length,
+				  long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_INT_TIME:
+		*length = ARRAY_SIZE(tsl2591_int_time_available);
+		*vals = tsl2591_int_time_available;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+
+	case IIO_CHAN_INFO_CALIBSCALE:
+		*length = ARRAY_SIZE(tsl2591_calibscale_available);
+		*vals = tsl2591_calibscale_available;
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tsl2591_read_event_value(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir,
+				    enum iio_event_info info, int *val,
+				    int *val2)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	struct i2c_client *client = chip->client;
+	int als_persist, int_time, period;
+	int ret;
+
+	mutex_lock(&chip->als_mutex);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			*val = chip->als_settings.als_upper_thresh;
+			break;
+		case IIO_EV_DIR_FALLING:
+			*val = chip->als_settings.als_lower_thresh;
+			break;
+		default:
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+		ret = IIO_VAL_INT;
+		break;
+	case IIO_EV_INFO_PERIOD:
+		ret = i2c_smbus_read_byte_data(client,
+					       TSL2591_CMD_NOP | TSL2591_PERSIST);
+		if (ret <= 0 || ret > TSL2591_PRST_ALS_INT_CYCLE_MAX)
+			goto err_unlock;
+
+		als_persist = tsl2591_persist_cycle_to_lit(ret);
+		int_time = TSL2591_FVAL_TO_MSEC(chip->als_settings.als_int_time);
+		period = als_persist * (int_time * MSEC_PER_SEC);
+
+		*val = period / USEC_PER_SEC;
+		*val2 = period % USEC_PER_SEC;
+
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+err_unlock:
+	mutex_unlock(&chip->als_mutex);
+	return ret;
+}
+
+static int tsl2591_write_event_value(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir,
+				     enum iio_event_info info, int val,
+				     int val2)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	int period, int_time, als_persist;
+	int ret;
+
+	if (val < 0 || val2 < 0)
+		return -EINVAL;
+
+	mutex_lock(&chip->als_mutex);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		if (val > TSL2591_ALS_MAX_VALUE) {
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			ret = tsl2591_set_als_upper_threshold(chip, val);
+			if (ret < 0)
+				goto err_unlock;
+			break;
+		case IIO_EV_DIR_FALLING:
+			ret = tsl2591_set_als_lower_threshold(chip, val);
+			if (ret < 0)
+				goto err_unlock;
+			break;
+		default:
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+		break;
+	case IIO_EV_INFO_PERIOD:
+		int_time = TSL2591_FVAL_TO_MSEC(chip->als_settings.als_int_time);
+
+		period = ((val * MSEC_PER_SEC) +
+			 (val2 / MSEC_PER_SEC)) / int_time;
+
+		als_persist = tsl2591_persist_lit_to_cycle(period);
+		if (als_persist < 0) {
+			ret = -EINVAL;
+			goto err_unlock;
+		}
+
+		ret = tsl2591_compatible_als_persist_cycle(chip, als_persist);
+		if (ret < 0)
+			goto err_unlock;
+
+		ret = tsl2591_set_als_persist_cycle(chip, als_persist);
+		if (ret < 0)
+			goto err_unlock;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+err_unlock:
+	mutex_unlock(&chip->als_mutex);
+	return ret;
+}
+
+static int tsl2591_read_event_config(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+
+	return chip->events_enabled;
+}
+
+static int tsl2591_write_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir,
+				      int state)
+{
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	struct i2c_client *client = chip->client;
+
+	if (state && !chip->events_enabled) {
+		chip->events_enabled = true;
+		pm_runtime_get_sync(&client->dev);
+	} else if (!state && chip->events_enabled) {
+		chip->events_enabled = false;
+		pm_runtime_mark_last_busy(&client->dev);
+		pm_runtime_put_autosuspend(&client->dev);
+	}
+
+	return 0;
+}
+
+static const struct iio_info tsl2591_info = {
+	.event_attrs = &tsl2591_event_attribute_group,
+	.read_raw = tsl2591_read_raw,
+	.write_raw = tsl2591_write_raw,
+	.read_avail = tsl2591_read_available,
+	.read_event_value = tsl2591_read_event_value,
+	.write_event_value = tsl2591_write_event_value,
+	.read_event_config = tsl2591_read_event_config,
+	.write_event_config = tsl2591_write_event_config,
+};
+
+static const struct iio_info tsl2591_info_no_irq = {
+	.read_raw = tsl2591_read_raw,
+	.write_raw = tsl2591_write_raw,
+	.read_avail = tsl2591_read_available,
+};
+
+static int tsl2591_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&chip->als_mutex);
+	ret = tsl2591_set_power_state(chip, TSL2591_PWR_OFF);
+	mutex_unlock(&chip->als_mutex);
+
+	return ret;
+}
+
+static int tsl2591_resume(struct device *dev)
+{
+	int power_state = TSL2591_PWR_ON | TSL2591_ENABLE_ALS;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	int ret;
+
+	if (chip->events_enabled)
+		power_state |= TSL2591_ENABLE_ALS_INT;
+
+	mutex_lock(&chip->als_mutex);
+	ret = tsl2591_set_power_state(chip, power_state);
+	mutex_unlock(&chip->als_mutex);
+
+	return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(tsl2591_pm_ops, tsl2591_suspend,
+				 tsl2591_resume, NULL);
+
+static irqreturn_t tsl2591_event_handler(int irq, void *private)
+{
+	struct iio_dev *dev_info = private;
+	struct tsl2591_chip *chip = iio_priv(dev_info);
+	struct i2c_client *client = chip->client;
+
+	if (!chip->events_enabled)
+		return IRQ_NONE;
+
+	iio_push_event(dev_info,
+		       IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
+					    IIO_EV_TYPE_THRESH,
+					    IIO_EV_DIR_EITHER),
+					    iio_get_time_ns(dev_info));
+
+	/* Clear ALS irq */
+	i2c_smbus_write_byte(client, TSL2591_CMD_SF_CALS_NPI);
+
+	return IRQ_HANDLED;
+}
+
+static int tsl2591_load_defaults(struct tsl2591_chip *chip)
+{
+	int ret;
+
+	chip->als_settings.als_int_time = TSL2591_DEFAULT_ALS_INT_TIME;
+	chip->als_settings.als_gain = TSL2591_DEFAULT_ALS_GAIN;
+	chip->als_settings.als_lower_thresh = TSL2591_DEFAULT_ALS_LOWER_THRESH;
+	chip->als_settings.als_upper_thresh = TSL2591_DEFAULT_ALS_UPPER_THRESH;
+
+	ret = tsl2591_set_als_gain_int_time(chip);
+	if (ret < 0)
+		return ret;
+
+	ret = tsl2591_set_als_persist_cycle(chip, TSL2591_DEFAULT_ALS_PERSIST);
+	if (ret < 0)
+		return ret;
+
+	ret = tsl2591_set_als_lower_threshold(chip, TSL2591_DEFAULT_ALS_LOWER_THRESH);
+	if (ret < 0)
+		return ret;
+
+	ret = tsl2591_set_als_upper_threshold(chip, TSL2591_DEFAULT_ALS_UPPER_THRESH);
+	if (ret < 0)
+		return ret;
+
+	return 0;
+}
+
+static void tsl2591_chip_off(void *data)
+{
+	struct iio_dev *indio_dev = data;
+	struct tsl2591_chip *chip = iio_priv(indio_dev);
+	struct i2c_client *client = chip->client;
+
+	pm_runtime_disable(&client->dev);
+	pm_runtime_set_suspended(&client->dev);
+	pm_runtime_put_noidle(&client->dev);
+
+	tsl2591_set_power_state(chip, TSL2591_PWR_OFF);
+}
+
+static int tsl2591_probe(struct i2c_client *client)
+{
+	struct tsl2591_chip *chip;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA)) {
+		dev_err(&client->dev,
+			"I2C smbus byte data functionality is not supported\n");
+		return -EOPNOTSUPP;
+	}
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	chip = iio_priv(indio_dev);
+	chip->client = client;
+	i2c_set_clientdata(client, indio_dev);
+
+	if (client->irq) {
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL, tsl2591_event_handler,
+						IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
+						"tsl2591_irq", indio_dev);
+		if (ret) {
+			dev_err_probe(&client->dev, ret, "IRQ request error\n");
+			return -EINVAL;
+		}
+		indio_dev->info = &tsl2591_info;
+	} else {
+		indio_dev->info = &tsl2591_info_no_irq;
+	}
+
+	mutex_init(&chip->als_mutex);
+
+	ret = i2c_smbus_read_byte_data(client,
+				       TSL2591_CMD_NOP | TSL2591_DEVICE_ID);
+	if (ret < 0) {
+		dev_err(&client->dev,
+			"Failed to read the device ID register\n");
+		return ret;
+	}
+	ret = FIELD_GET(TSL2591_DEVICE_ID_MASK, ret);
+	if (ret != TSL2591_DEVICE_ID_VAL) {
+		dev_err(&client->dev, "Device ID: %#04x unknown\n", ret);
+		return -EINVAL;
+	}
+
+	indio_dev->channels = tsl2591_channels;
+	indio_dev->num_channels = ARRAY_SIZE(tsl2591_channels);
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->name = chip->client->name;
+	chip->events_enabled = false;
+
+	pm_runtime_enable(&client->dev);
+	pm_runtime_set_autosuspend_delay(&client->dev,
+					 TSL2591_POWER_OFF_DELAY_MS);
+	pm_runtime_use_autosuspend(&client->dev);
+
+	/*
+	 * Add chip off to automatically managed path and disable runtime
+	 * power management. This ensures that the chip power management
+	 * is handled correctly on driver remove. tsl2591_chip_off() must be
+	 * added to the managed path after pm runtime is enabled and before
+	 * any error exit paths are met to ensure we're not left in a state
+	 * of pm runtime not being disabled properly.
+	 */
+	ret = devm_add_action_or_reset(&client->dev, tsl2591_chip_off,
+				       indio_dev);
+	if (ret < 0)
+		return -EINVAL;
+
+	ret = tsl2591_load_defaults(chip);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to load sensor defaults\n");
+		return -EINVAL;
+	}
+
+	ret = i2c_smbus_write_byte(client, TSL2591_CMD_SF_CALS_NPI);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to clear als irq\n");
+		return -EINVAL;
+	}
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static const struct of_device_id tsl2591_of_match[] = {
+	{ .compatible = "amstaos,tsl2591"},
+	{}
+};
+MODULE_DEVICE_TABLE(of, tsl2591_of_match);
+
+static struct i2c_driver tsl2591_driver = {
+	.driver = {
+		.name = "tsl2591",
+		.pm = pm_ptr(&tsl2591_pm_ops),
+		.of_match_table = tsl2591_of_match,
+	},
+	.probe_new = tsl2591_probe
+};
+module_i2c_driver(tsl2591_driver);
+
+MODULE_AUTHOR("Joe Sandom <joe.g.sandom@gmail.com>");
+MODULE_DESCRIPTION("TAOS tsl2591 ambient light sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/light/tsl2772.c b/drivers/iio/light/tsl2772.c
index be37fcbd4654..dd9051f1cc1a 100644
--- a/drivers/iio/light/tsl2772.c
+++ b/drivers/iio/light/tsl2772.c
@@ -15,7 +15,9 @@
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
+#include <linux/property.h>
 #include <linux/slab.h>
+
 #include <linux/iio/events.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -549,10 +551,10 @@ prox_poll_err:
 
 static int tsl2772_read_prox_led_current(struct tsl2772_chip *chip)
 {
-	struct device_node *of_node = chip->client->dev.of_node;
+	struct device *dev = &chip->client->dev;
 	int ret, tmp, i;
 
-	ret = of_property_read_u32(of_node, "led-max-microamp", &tmp);
+	ret = device_property_read_u32(dev, "led-max-microamp", &tmp);
 	if (ret < 0)
 		return ret;
 
@@ -563,20 +565,18 @@ static int tsl2772_read_prox_led_current(struct tsl2772_chip *chip)
 		}
 	}
 
-	dev_err(&chip->client->dev, "Invalid value %d for led-max-microamp\n",
-		tmp);
+	dev_err(dev, "Invalid value %d for led-max-microamp\n", tmp);
 
 	return -EINVAL;
-
 }
 
 static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
 {
-	struct device_node *of_node = chip->client->dev.of_node;
+	struct device *dev = &chip->client->dev;
 	int i, ret, num_leds, prox_diode_mask;
 	u32 leds[TSL2772_MAX_PROX_LEDS];
 
-	ret = of_property_count_u32_elems(of_node, "amstaos,proximity-diodes");
+	ret = device_property_count_u32(dev, "amstaos,proximity-diodes");
 	if (ret < 0)
 		return ret;
 
@@ -584,12 +584,9 @@ static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
 	if (num_leds > TSL2772_MAX_PROX_LEDS)
 		num_leds = TSL2772_MAX_PROX_LEDS;
 
-	ret = of_property_read_u32_array(of_node, "amstaos,proximity-diodes",
-					 leds, num_leds);
+	ret = device_property_read_u32_array(dev, "amstaos,proximity-diodes", leds, num_leds);
 	if (ret < 0) {
-		dev_err(&chip->client->dev,
-			"Invalid value for amstaos,proximity-diodes: %d.\n",
-			ret);
+		dev_err(dev, "Invalid value for amstaos,proximity-diodes: %d.\n", ret);
 		return ret;
 	}
 
@@ -600,9 +597,7 @@ static int tsl2772_read_prox_diodes(struct tsl2772_chip *chip)
 		else if (leds[i] == 1)
 			prox_diode_mask |= TSL2772_DIODE1;
 		else {
-			dev_err(&chip->client->dev,
-				"Invalid value %d in amstaos,proximity-diodes.\n",
-				leds[i]);
+			dev_err(dev, "Invalid value %d in amstaos,proximity-diodes.\n", leds[i]);
 			return -EINVAL;
 		}
 	}
@@ -932,7 +927,7 @@ static ssize_t in_illuminance0_target_input_show(struct device *dev,
 {
 	struct tsl2772_chip *chip = iio_priv(dev_to_iio_dev(dev));
 
-	return snprintf(buf, PAGE_SIZE, "%d\n", chip->settings.als_cal_target);
+	return scnprintf(buf, PAGE_SIZE, "%d\n", chip->settings.als_cal_target);
 }
 
 static ssize_t in_illuminance0_target_input_store(struct device *dev,
@@ -986,7 +981,7 @@ static ssize_t in_illuminance0_lux_table_show(struct device *dev,
 	int offset = 0;
 
 	while (i < TSL2772_MAX_LUX_TABLE_SIZE) {
-		offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,",
+		offset += scnprintf(buf + offset, PAGE_SIZE - offset, "%u,%u,",
 			chip->tsl2772_device_lux[i].ch0,
 			chip->tsl2772_device_lux[i].ch1);
 		if (chip->tsl2772_device_lux[i].ch0 == 0) {
@@ -1000,7 +995,7 @@ static ssize_t in_illuminance0_lux_table_show(struct device *dev,
 		i++;
 	}
 
-	offset += snprintf(buf + offset, PAGE_SIZE, "\n");
+	offset += scnprintf(buf + offset, PAGE_SIZE - offset, "\n");
 	return offset;
 }
 
@@ -1776,14 +1771,8 @@ static int tsl2772_probe(struct i2c_client *clientp,
 	ret = devm_regulator_bulk_get(&clientp->dev,
 				      ARRAY_SIZE(chip->supplies),
 				      chip->supplies);
-	if (ret < 0) {
-		if (ret != -EPROBE_DEFER)
-			dev_err(&clientp->dev,
-				"Failed to get regulators: %d\n",
-				ret);
-
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(&clientp->dev, ret, "Failed to get regulators\n");
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(chip->supplies), chip->supplies);
 	if (ret < 0) {
@@ -1833,7 +1822,6 @@ static int tsl2772_probe(struct i2c_client *clientp,
 		&tsl2772_chip_info_tbl[device_channel_config[id->driver_data]];
 
 	indio_dev->info = chip->chip_info->info;
-	indio_dev->dev.parent = &clientp->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->name = chip->client->name;
 	indio_dev->num_channels = chip->chip_info->chan_table_elements;
@@ -1909,7 +1897,7 @@ static const struct i2c_device_id tsl2772_idtable[] = {
 	{ "tmd2672", tmd2672 },
 	{ "tsl2772", tsl2772 },
 	{ "tmd2772", tmd2772 },
-	{ "apds9930", apds9930},
+	{ "apds9930", apds9930 },
 	{}
 };
 
diff --git a/drivers/iio/light/tsl4531.c b/drivers/iio/light/tsl4531.c
index 0dfc664205c7..090038fed889 100644
--- a/drivers/iio/light/tsl4531.c
+++ b/drivers/iio/light/tsl4531.c
@@ -192,7 +192,6 @@ static int tsl4531_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &tsl4531_info;
 	indio_dev->channels = tsl4531_channels;
 	indio_dev->num_channels = ARRAY_SIZE(tsl4531_channels);
@@ -208,15 +207,12 @@ static int tsl4531_powerdown(struct i2c_client *client)
 		TSL4531_MODE_POWERDOWN);
 }
 
-static int tsl4531_remove(struct i2c_client *client)
+static void tsl4531_remove(struct i2c_client *client)
 {
 	iio_device_unregister(i2c_get_clientdata(client));
 	tsl4531_powerdown(client);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tsl4531_suspend(struct device *dev)
 {
 	return tsl4531_powerdown(to_i2c_client(dev));
@@ -228,11 +224,8 @@ static int tsl4531_resume(struct device *dev)
 		TSL4531_MODE_NORMAL);
 }
 
-static SIMPLE_DEV_PM_OPS(tsl4531_pm_ops, tsl4531_suspend, tsl4531_resume);
-#define TSL4531_PM_OPS (&tsl4531_pm_ops)
-#else
-#define TSL4531_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(tsl4531_pm_ops, tsl4531_suspend,
+				tsl4531_resume);
 
 static const struct i2c_device_id tsl4531_id[] = {
 	{ "tsl4531", 0 },
@@ -243,7 +236,7 @@ MODULE_DEVICE_TABLE(i2c, tsl4531_id);
 static struct i2c_driver tsl4531_driver = {
 	.driver = {
 		.name   = TSL4531_DRV_NAME,
-		.pm	= TSL4531_PM_OPS,
+		.pm	= pm_sleep_ptr(&tsl4531_pm_ops),
 	},
 	.probe  = tsl4531_probe,
 	.remove = tsl4531_remove,
diff --git a/drivers/iio/light/us5182d.c b/drivers/iio/light/us5182d.c
index b995f21a3347..3e652d7f3b0e 100644
--- a/drivers/iio/light/us5182d.c
+++ b/drivers/iio/light/us5182d.c
@@ -367,9 +367,7 @@ static int us5182d_set_power_state(struct us5182d_data *data, bool on)
 		return 0;
 
 	if (on) {
-		ret = pm_runtime_get_sync(&data->client->dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(&data->client->dev);
+		ret = pm_runtime_resume_and_get(&data->client->dev);
 	} else {
 		pm_runtime_mark_last_busy(&data->client->dev);
 		ret = pm_runtime_put_autosuspend(&data->client->dev);
@@ -446,8 +444,8 @@ static int us5182d_read_raw(struct iio_dev *indio_dev,
 
 /**
  * us5182d_update_dark_th - update Darh_Th registers
- * @data	us5182d_data structure
- * @index	index in us5182d_dark_ths array to use for the updated value
+ * @data:	us5182d_data structure
+ * @index:	index in us5182d_dark_ths array to use for the updated value
  *
  * Function needs to be called with a lock held because it needs two i2c write
  * byte operations as these registers (0x27 0x28) don't work in word mode
@@ -469,8 +467,8 @@ static int us5182d_update_dark_th(struct us5182d_data *data, int index)
 
 /**
  * us5182d_apply_scale - update the ALS scale
- * @data	us5182d_data structure
- * @index	index in us5182d_scales array to use for the updated value
+ * @data:	us5182d_data structure
+ * @index:	index in us5182d_scales array to use for the updated value
  *
  * Function needs to be called with a lock held as we're having more than one
  * i2c operation.
@@ -851,7 +849,6 @@ static int us5182d_probe(struct i2c_client *client,
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &us5182d_info;
 	indio_dev->name = US5182D_DRV_NAME;
 	indio_dev->channels = us5182d_channels;
@@ -907,19 +904,22 @@ out_err:
 
 }
 
-static int us5182d_remove(struct i2c_client *client)
+static void us5182d_remove(struct i2c_client *client)
 {
 	struct us5182d_data *data = iio_priv(i2c_get_clientdata(client));
+	int ret;
 
 	iio_device_unregister(i2c_get_clientdata(client));
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
 
-	return us5182d_shutdown_en(data, US5182D_CFG0_SHUTDOWN_EN);
+	ret = us5182d_shutdown_en(data, US5182D_CFG0_SHUTDOWN_EN);
+	if (ret)
+		dev_warn(&client->dev, "Failed to shut down (%pe)\n",
+			 ERR_PTR(ret));
 }
 
-#if defined(CONFIG_PM_SLEEP) || defined(CONFIG_PM)
 static int us5182d_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -942,23 +942,22 @@ static int us5182d_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
 static const struct dev_pm_ops us5182d_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(us5182d_suspend, us5182d_resume)
-	SET_RUNTIME_PM_OPS(us5182d_suspend, us5182d_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(us5182d_suspend, us5182d_resume)
+	RUNTIME_PM_OPS(us5182d_suspend, us5182d_resume, NULL)
 };
 
 static const struct acpi_device_id us5182d_acpi_match[] = {
-	{ "USD5182", 0},
+	{ "USD5182", 0 },
 	{}
 };
 
 MODULE_DEVICE_TABLE(acpi, us5182d_acpi_match);
 
 static const struct i2c_device_id us5182d_id[] = {
-		{"usd5182", 0},
-		{}
+	{ "usd5182", 0 },
+	{}
 };
 
 MODULE_DEVICE_TABLE(i2c, us5182d_id);
@@ -972,7 +971,7 @@ MODULE_DEVICE_TABLE(of, us5182d_of_match);
 static struct i2c_driver us5182d_driver = {
 	.driver = {
 		.name = US5182D_DRV_NAME,
-		.pm = &us5182d_pm_ops,
+		.pm = pm_ptr(&us5182d_pm_ops),
 		.of_match_table = us5182d_of_match,
 		.acpi_match_table = ACPI_PTR(us5182d_acpi_match),
 	},
diff --git a/drivers/iio/light/vcnl4000.c b/drivers/iio/light/vcnl4000.c
index e5b00a6611ac..f6c83ecaad8b 100644
--- a/drivers/iio/light/vcnl4000.c
+++ b/drivers/iio/light/vcnl4000.c
@@ -5,6 +5,7 @@
  *
  * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net>
  * Copyright 2019 Pursim SPC
+ * Copyright 2020 Mathieu Othacehe <m.othacehe@gmail.com>
  *
  * IIO driver for:
  *   VCNL4000/10/20 (7-bit I2C slave address 0x13)
@@ -13,18 +14,23 @@
  *
  * TODO:
  *   allow to adjust IR current
- *   proximity threshold and event handling
- *   periodic ALS/proximity measurement (VCNL4010/20)
- *   interrupts (VCNL4010/20/40, VCNL4200)
+ *   interrupts (VCNL4040, VCNL4200)
  */
 
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/pm_runtime.h>
+#include <linux/interrupt.h>
 
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
 
 #define VCNL4000_DRV_NAME "vcnl4000"
 #define VCNL4000_PROD_ID	0x01
@@ -34,14 +40,22 @@
 
 #define VCNL4000_COMMAND	0x80 /* Command register */
 #define VCNL4000_PROD_REV	0x81 /* Product ID and Revision ID */
+#define VCNL4010_PROX_RATE      0x82 /* Proximity rate */
 #define VCNL4000_LED_CURRENT	0x83 /* IR LED current for proximity mode */
 #define VCNL4000_AL_PARAM	0x84 /* Ambient light parameter register */
+#define VCNL4010_ALS_PARAM      0x84 /* ALS rate */
 #define VCNL4000_AL_RESULT_HI	0x85 /* Ambient light result register, MSB */
 #define VCNL4000_AL_RESULT_LO	0x86 /* Ambient light result register, LSB */
 #define VCNL4000_PS_RESULT_HI	0x87 /* Proximity result register, MSB */
 #define VCNL4000_PS_RESULT_LO	0x88 /* Proximity result register, LSB */
 #define VCNL4000_PS_MEAS_FREQ	0x89 /* Proximity test signal frequency */
+#define VCNL4010_INT_CTRL	0x89 /* Interrupt control */
 #define VCNL4000_PS_MOD_ADJ	0x8a /* Proximity modulator timing adjustment */
+#define VCNL4010_LOW_THR_HI     0x8a /* Low threshold, MSB */
+#define VCNL4010_LOW_THR_LO     0x8b /* Low threshold, LSB */
+#define VCNL4010_HIGH_THR_HI    0x8c /* High threshold, MSB */
+#define VCNL4010_HIGH_THR_LO    0x8d /* High threshold, LSB */
+#define VCNL4010_ISR		0x8e /* Interrupt status */
 
 #define VCNL4200_AL_CONF	0x00 /* Ambient light configuration */
 #define VCNL4200_PS_CONF1	0x03 /* Proximity configuration */
@@ -56,6 +70,38 @@
 #define VCNL4000_PS_RDY		BIT(5) /* proximity data ready? */
 #define VCNL4000_AL_OD		BIT(4) /* start on-demand ALS measurement */
 #define VCNL4000_PS_OD		BIT(3) /* start on-demand proximity measurement */
+#define VCNL4000_ALS_EN		BIT(2) /* start ALS measurement */
+#define VCNL4000_PROX_EN	BIT(1) /* start proximity measurement */
+#define VCNL4000_SELF_TIMED_EN	BIT(0) /* start self-timed measurement */
+
+/* Bit masks for interrupt registers. */
+#define VCNL4010_INT_THR_SEL	BIT(0) /* Select threshold interrupt source */
+#define VCNL4010_INT_THR_EN	BIT(1) /* Threshold interrupt type */
+#define VCNL4010_INT_ALS_EN	BIT(2) /* Enable on ALS data ready */
+#define VCNL4010_INT_PROX_EN	BIT(3) /* Enable on proximity data ready */
+
+#define VCNL4010_INT_THR_HIGH	0 /* High threshold exceeded */
+#define VCNL4010_INT_THR_LOW	1 /* Low threshold exceeded */
+#define VCNL4010_INT_ALS	2 /* ALS data ready */
+#define VCNL4010_INT_PROXIMITY	3 /* Proximity data ready */
+
+#define VCNL4010_INT_THR \
+	(BIT(VCNL4010_INT_THR_LOW) | BIT(VCNL4010_INT_THR_HIGH))
+#define VCNL4010_INT_DRDY \
+	(BIT(VCNL4010_INT_PROXIMITY) | BIT(VCNL4010_INT_ALS))
+
+static const int vcnl4010_prox_sampling_frequency[][2] = {
+	{1, 950000},
+	{3, 906250},
+	{7, 812500},
+	{16, 625000},
+	{31, 250000},
+	{62, 500000},
+	{125, 0},
+	{250, 0},
+};
+
+#define VCNL4000_SLEEP_DELAY_MS	2000 /* before we enter pm_runtime_suspend */
 
 enum vcnl4000_device_ids {
 	VCNL4000,
@@ -80,13 +126,19 @@ struct vcnl4000_data {
 	struct mutex vcnl4000_lock;
 	struct vcnl4200_channel vcnl4200_al;
 	struct vcnl4200_channel vcnl4200_ps;
+	uint32_t near_level;
 };
 
 struct vcnl4000_chip_spec {
 	const char *prod;
+	struct iio_chan_spec const *channels;
+	const int num_channels;
+	const struct iio_info *info;
+	bool irq_support;
 	int (*init)(struct vcnl4000_data *data);
 	int (*measure_light)(struct vcnl4000_data *data, int *val);
 	int (*measure_proximity)(struct vcnl4000_data *data, int *val);
+	int (*set_power_state)(struct vcnl4000_data *data, bool on);
 };
 
 static const struct i2c_device_id vcnl4000_id[] = {
@@ -99,6 +151,12 @@ static const struct i2c_device_id vcnl4000_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, vcnl4000_id);
 
+static int vcnl4000_set_power_state(struct vcnl4000_data *data, bool on)
+{
+	/* no suspend op */
+	return 0;
+}
+
 static int vcnl4000_init(struct vcnl4000_data *data)
 {
 	int ret, prod_id;
@@ -127,9 +185,31 @@ static int vcnl4000_init(struct vcnl4000_data *data)
 	data->al_scale = 250000;
 	mutex_init(&data->vcnl4000_lock);
 
-	return 0;
+	return data->chip_spec->set_power_state(data, true);
 };
 
+static int vcnl4200_set_power_state(struct vcnl4000_data *data, bool on)
+{
+	u16 val = on ? 0 /* power on */ : 1 /* shut down */;
+	int ret;
+
+	ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, val);
+	if (ret < 0)
+		return ret;
+
+	ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, val);
+	if (ret < 0)
+		return ret;
+
+	if (on) {
+		/* Wait at least one integration cycle before fetching data */
+		data->vcnl4200_al.last_measurement = ktime_get();
+		data->vcnl4200_ps.last_measurement = ktime_get();
+	}
+
+	return 0;
+}
+
 static int vcnl4200_init(struct vcnl4000_data *data)
 {
 	int ret, id;
@@ -155,14 +235,6 @@ static int vcnl4200_init(struct vcnl4000_data *data)
 
 	data->rev = (ret >> 8) & 0xf;
 
-	/* Set defaults and enable both channels */
-	ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, 0);
-	if (ret < 0)
-		return ret;
-	ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, 0);
-	if (ret < 0)
-		return ret;
-
 	data->vcnl4200_al.reg = VCNL4200_AL_DATA;
 	data->vcnl4200_ps.reg = VCNL4200_PS_DATA;
 	switch (id) {
@@ -181,19 +253,41 @@ static int vcnl4200_init(struct vcnl4000_data *data)
 		data->al_scale = 120000;
 		break;
 	}
-	data->vcnl4200_al.last_measurement = ktime_set(0, 0);
-	data->vcnl4200_ps.last_measurement = ktime_set(0, 0);
 	mutex_init(&data->vcnl4200_al.lock);
 	mutex_init(&data->vcnl4200_ps.lock);
 
+	ret = data->chip_spec->set_power_state(data, true);
+	if (ret < 0)
+		return ret;
+
 	return 0;
 };
 
+static int vcnl4000_read_data(struct vcnl4000_data *data, u8 data_reg, int *val)
+{
+	s32 ret;
+
+	ret = i2c_smbus_read_word_swapped(data->client, data_reg);
+	if (ret < 0)
+		return ret;
+
+	*val = ret;
+	return 0;
+}
+
+static int vcnl4000_write_data(struct vcnl4000_data *data, u8 data_reg, int val)
+{
+	if (val > U16_MAX)
+		return -ERANGE;
+
+	return i2c_smbus_write_word_swapped(data->client, data_reg, val);
+}
+
+
 static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
 				u8 rdy_mask, u8 data_reg, int *val)
 {
 	int tries = 20;
-	__be16 buf;
 	int ret;
 
 	mutex_lock(&data->vcnl4000_lock);
@@ -220,13 +314,11 @@ static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
 		goto fail;
 	}
 
-	ret = i2c_smbus_read_i2c_block_data(data->client,
-		data_reg, sizeof(buf), (u8 *) &buf);
+	ret = vcnl4000_read_data(data, data_reg, val);
 	if (ret < 0)
 		goto fail;
 
 	mutex_unlock(&data->vcnl4000_lock);
-	*val = be16_to_cpu(buf);
 
 	return 0;
 
@@ -286,83 +378,635 @@ static int vcnl4200_measure_proximity(struct vcnl4000_data *data, int *val)
 	return vcnl4200_measure(data, &data->vcnl4200_ps, val);
 }
 
+static int vcnl4010_read_proxy_samp_freq(struct vcnl4000_data *data, int *val,
+					 int *val2)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_PROX_RATE);
+	if (ret < 0)
+		return ret;
+
+	if (ret >= ARRAY_SIZE(vcnl4010_prox_sampling_frequency))
+		return -EINVAL;
+
+	*val = vcnl4010_prox_sampling_frequency[ret][0];
+	*val2 = vcnl4010_prox_sampling_frequency[ret][1];
+
+	return 0;
+}
+
+static bool vcnl4010_is_in_periodic_mode(struct vcnl4000_data *data)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND);
+	if (ret < 0)
+		return false;
+
+	return !!(ret & VCNL4000_SELF_TIMED_EN);
+}
+
+static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on)
+{
+	struct device *dev = &data->client->dev;
+	int ret;
+
+	if (on) {
+		ret = pm_runtime_resume_and_get(dev);
+	} else {
+		pm_runtime_mark_last_busy(dev);
+		ret = pm_runtime_put_autosuspend(dev);
+	}
+
+	return ret;
+}
+
+static int vcnl4000_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2, long mask)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = vcnl4000_set_pm_runtime_state(data, true);
+		if  (ret < 0)
+			return ret;
+
+		switch (chan->type) {
+		case IIO_LIGHT:
+			ret = data->chip_spec->measure_light(data, val);
+			if (!ret)
+				ret = IIO_VAL_INT;
+			break;
+		case IIO_PROXIMITY:
+			ret = data->chip_spec->measure_proximity(data, val);
+			if (!ret)
+				ret = IIO_VAL_INT;
+			break;
+		default:
+			ret = -EINVAL;
+		}
+		vcnl4000_set_pm_runtime_state(data, false);
+		return ret;
+	case IIO_CHAN_INFO_SCALE:
+		if (chan->type != IIO_LIGHT)
+			return -EINVAL;
+
+		*val = 0;
+		*val2 = data->al_scale;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_SCALE:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		/* Protect against event capture. */
+		if (vcnl4010_is_in_periodic_mode(data)) {
+			ret = -EBUSY;
+		} else {
+			ret = vcnl4000_read_raw(indio_dev, chan, val, val2,
+						mask);
+		}
+
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		switch (chan->type) {
+		case IIO_PROXIMITY:
+			ret = vcnl4010_read_proxy_samp_freq(data, val, val2);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (int *)vcnl4010_prox_sampling_frequency;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = 2 * ARRAY_SIZE(vcnl4010_prox_sampling_frequency);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_write_proxy_samp_freq(struct vcnl4000_data *data, int val,
+					  int val2)
+{
+	unsigned int i;
+	int index = -1;
+
+	for (i = 0; i < ARRAY_SIZE(vcnl4010_prox_sampling_frequency); i++) {
+		if (val == vcnl4010_prox_sampling_frequency[i][0] &&
+		    val2 == vcnl4010_prox_sampling_frequency[i][1]) {
+			index = i;
+			break;
+		}
+	}
+
+	if (index < 0)
+		return -EINVAL;
+
+	return i2c_smbus_write_byte_data(data->client, VCNL4010_PROX_RATE,
+					 index);
+}
+
+static int vcnl4010_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	/* Protect against event capture. */
+	if (vcnl4010_is_in_periodic_mode(data)) {
+		ret = -EBUSY;
+		goto end;
+	}
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		switch (chan->type) {
+		case IIO_PROXIMITY:
+			ret = vcnl4010_write_proxy_samp_freq(data, val, val2);
+			goto end;
+		default:
+			ret = -EINVAL;
+			goto end;
+		}
+	default:
+		ret = -EINVAL;
+		goto end;
+	}
+
+end:
+	iio_device_release_direct_mode(indio_dev);
+	return ret;
+}
+
+static int vcnl4010_read_event(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       enum iio_event_type type,
+			       enum iio_event_direction dir,
+			       enum iio_event_info info,
+			       int *val, int *val2)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			ret = vcnl4000_read_data(data, VCNL4010_HIGH_THR_HI,
+						 val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			ret = vcnl4000_read_data(data, VCNL4010_LOW_THR_HI,
+						 val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_write_event(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir,
+				enum iio_event_info info,
+				int val, int val2)
+{
+	int ret;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			ret = vcnl4000_write_data(data, VCNL4010_HIGH_THR_HI,
+						  val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			ret = vcnl4000_write_data(data, VCNL4010_LOW_THR_HI,
+						  val);
+			if (ret < 0)
+				return ret;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static bool vcnl4010_is_thr_enabled(struct vcnl4000_data *data)
+{
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_INT_CTRL);
+	if (ret < 0)
+		return false;
+
+	return !!(ret & VCNL4010_INT_THR_EN);
+}
+
+static int vcnl4010_read_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	switch (chan->type) {
+	case IIO_PROXIMITY:
+		return vcnl4010_is_thr_enabled(data);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
+	int icr;
+	int command;
+
+	if (state) {
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		/* Enable periodic measurement of proximity data. */
+		command = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
+
+		/*
+		 * Enable interrupts on threshold, for proximity data by
+		 * default.
+		 */
+		icr = VCNL4010_INT_THR_EN;
+	} else {
+		if (!vcnl4010_is_thr_enabled(data))
+			return 0;
+
+		command = 0;
+		icr = 0;
+	}
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
+					command);
+	if (ret < 0)
+		goto end;
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, icr);
+
+end:
+	if (state)
+		iio_device_release_direct_mode(indio_dev);
+
+	return ret;
+}
+
+static int vcnl4010_write_event_config(struct iio_dev *indio_dev,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_type type,
+				       enum iio_event_direction dir,
+				       int state)
+{
+	switch (chan->type) {
+	case IIO_PROXIMITY:
+		return vcnl4010_config_threshold(indio_dev, state);
+	default:
+		return -EINVAL;
+	}
+}
+
+static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev,
+					uintptr_t priv,
+					const struct iio_chan_spec *chan,
+					char *buf)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	return sprintf(buf, "%u\n", data->near_level);
+}
+
+static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = {
+	{
+		.name = "nearlevel",
+		.shared = IIO_SEPARATE,
+		.read = vcnl4000_read_near_level,
+	},
+	{ /* sentinel */ }
+};
+
+static const struct iio_event_spec vcnl4000_event_spec[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	}
+};
+
+static const struct iio_chan_spec vcnl4000_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE),
+	}, {
+		.type = IIO_PROXIMITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.ext_info = vcnl4000_ext_info,
+	}
+};
+
+static const struct iio_chan_spec vcnl4010_channels[] = {
+	{
+		.type = IIO_LIGHT,
+		.scan_index = -1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE),
+	}, {
+		.type = IIO_PROXIMITY,
+		.scan_index = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.event_spec = vcnl4000_event_spec,
+		.num_event_specs = ARRAY_SIZE(vcnl4000_event_spec),
+		.ext_info = vcnl4000_ext_info,
+		.scan_type = {
+			.sign = 'u',
+			.realbits = 16,
+			.storagebits = 16,
+			.endianness = IIO_CPU,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1),
+};
+
+static const struct iio_info vcnl4000_info = {
+	.read_raw = vcnl4000_read_raw,
+};
+
+static const struct iio_info vcnl4010_info = {
+	.read_raw = vcnl4010_read_raw,
+	.read_avail = vcnl4010_read_avail,
+	.write_raw = vcnl4010_write_raw,
+	.read_event_value = vcnl4010_read_event,
+	.write_event_value = vcnl4010_write_event,
+	.read_event_config = vcnl4010_read_event_config,
+	.write_event_config = vcnl4010_write_event_config,
+};
+
 static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
 	[VCNL4000] = {
 		.prod = "VCNL4000",
 		.init = vcnl4000_init,
 		.measure_light = vcnl4000_measure_light,
 		.measure_proximity = vcnl4000_measure_proximity,
+		.set_power_state = vcnl4000_set_power_state,
+		.channels = vcnl4000_channels,
+		.num_channels = ARRAY_SIZE(vcnl4000_channels),
+		.info = &vcnl4000_info,
+		.irq_support = false,
 	},
 	[VCNL4010] = {
 		.prod = "VCNL4010/4020",
 		.init = vcnl4000_init,
 		.measure_light = vcnl4000_measure_light,
 		.measure_proximity = vcnl4000_measure_proximity,
+		.set_power_state = vcnl4000_set_power_state,
+		.channels = vcnl4010_channels,
+		.num_channels = ARRAY_SIZE(vcnl4010_channels),
+		.info = &vcnl4010_info,
+		.irq_support = true,
 	},
 	[VCNL4040] = {
 		.prod = "VCNL4040",
 		.init = vcnl4200_init,
 		.measure_light = vcnl4200_measure_light,
 		.measure_proximity = vcnl4200_measure_proximity,
+		.set_power_state = vcnl4200_set_power_state,
+		.channels = vcnl4000_channels,
+		.num_channels = ARRAY_SIZE(vcnl4000_channels),
+		.info = &vcnl4000_info,
+		.irq_support = false,
 	},
 	[VCNL4200] = {
 		.prod = "VCNL4200",
 		.init = vcnl4200_init,
 		.measure_light = vcnl4200_measure_light,
 		.measure_proximity = vcnl4200_measure_proximity,
+		.set_power_state = vcnl4200_set_power_state,
+		.channels = vcnl4000_channels,
+		.num_channels = ARRAY_SIZE(vcnl4000_channels),
+		.info = &vcnl4000_info,
+		.irq_support = false,
 	},
 };
 
-static const struct iio_chan_spec vcnl4000_channels[] = {
-	{
-		.type = IIO_LIGHT,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-			BIT(IIO_CHAN_INFO_SCALE),
-	}, {
-		.type = IIO_PROXIMITY,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+static irqreturn_t vcnl4010_irq_thread(int irq, void *p)
+{
+	struct iio_dev *indio_dev = p;
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	unsigned long isr;
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
+	if (ret < 0)
+		goto end;
+
+	isr = ret;
+
+	if (isr & VCNL4010_INT_THR) {
+		if (test_bit(VCNL4010_INT_THR_LOW, &isr)) {
+			iio_push_event(indio_dev,
+				       IIO_UNMOD_EVENT_CODE(
+					       IIO_PROXIMITY,
+					       1,
+					       IIO_EV_TYPE_THRESH,
+					       IIO_EV_DIR_FALLING),
+				       iio_get_time_ns(indio_dev));
+		}
+
+		if (test_bit(VCNL4010_INT_THR_HIGH, &isr)) {
+			iio_push_event(indio_dev,
+				       IIO_UNMOD_EVENT_CODE(
+					       IIO_PROXIMITY,
+					       1,
+					       IIO_EV_TYPE_THRESH,
+					       IIO_EV_DIR_RISING),
+				       iio_get_time_ns(indio_dev));
+		}
+
+		i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
+					  isr & VCNL4010_INT_THR);
 	}
-};
 
-static int vcnl4000_read_raw(struct iio_dev *indio_dev,
-				struct iio_chan_spec const *chan,
-				int *val, int *val2, long mask)
+	if (isr & VCNL4010_INT_DRDY && iio_buffer_enabled(indio_dev))
+		iio_trigger_poll_chained(indio_dev->trig);
+
+end:
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t vcnl4010_trigger_handler(int irq, void *p)
 {
-	int ret;
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct vcnl4000_data *data = iio_priv(indio_dev);
+	const unsigned long *active_scan_mask = indio_dev->active_scan_mask;
+	u16 buffer[8] __aligned(8) = {0}; /* 1x16-bit + naturally aligned ts */
+	bool data_read = false;
+	unsigned long isr;
+	int val = 0;
+	int ret;
 
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		switch (chan->type) {
-		case IIO_LIGHT:
-			ret = data->chip_spec->measure_light(data, val);
-			if (ret < 0)
-				return ret;
-			return IIO_VAL_INT;
-		case IIO_PROXIMITY:
-			ret = data->chip_spec->measure_proximity(data, val);
+	ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
+	if (ret < 0)
+		goto end;
+
+	isr = ret;
+
+	if (test_bit(0, active_scan_mask)) {
+		if (test_bit(VCNL4010_INT_PROXIMITY, &isr)) {
+			ret = vcnl4000_read_data(data,
+						 VCNL4000_PS_RESULT_HI,
+						 &val);
 			if (ret < 0)
-				return ret;
-			return IIO_VAL_INT;
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_SCALE:
-		if (chan->type != IIO_LIGHT)
-			return -EINVAL;
+				goto end;
 
-		*val = 0;
-		*val2 = data->al_scale;
-		return IIO_VAL_INT_PLUS_MICRO;
-	default:
-		return -EINVAL;
+			buffer[0] = val;
+			data_read = true;
+		}
 	}
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
+					isr & VCNL4010_INT_DRDY);
+	if (ret < 0)
+		goto end;
+
+	if (!data_read)
+		goto end;
+
+	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+					   iio_get_time_ns(indio_dev));
+
+end:
+	iio_trigger_notify_done(indio_dev->trig);
+	return IRQ_HANDLED;
 }
 
-static const struct iio_info vcnl4000_info = {
-	.read_raw = vcnl4000_read_raw,
+static int vcnl4010_buffer_postenable(struct iio_dev *indio_dev)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
+	int cmd;
+
+	/* Do not enable the buffer if we are already capturing events. */
+	if (vcnl4010_is_in_periodic_mode(data))
+		return -EBUSY;
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL,
+					VCNL4010_INT_PROX_EN);
+	if (ret < 0)
+		return ret;
+
+	cmd = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
+	return i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, cmd);
+}
+
+static int vcnl4010_buffer_predisable(struct iio_dev *indio_dev)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, 0);
+	if (ret < 0)
+		return ret;
+
+	return i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, 0);
+}
+
+static const struct iio_buffer_setup_ops vcnl4010_buffer_ops = {
+	.postenable = &vcnl4010_buffer_postenable,
+	.predisable = &vcnl4010_buffer_predisable,
 };
 
+static const struct iio_trigger_ops vcnl4010_trigger_ops = {
+	.validate_device = iio_trigger_validate_own_device,
+};
+
+static int vcnl4010_probe_trigger(struct iio_dev *indio_dev)
+{
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	struct i2c_client *client = data->client;
+	struct iio_trigger *trigger;
+
+	trigger = devm_iio_trigger_alloc(&client->dev, "%s-dev%d",
+					 indio_dev->name,
+					 iio_device_id(indio_dev));
+	if (!trigger)
+		return -ENOMEM;
+
+	trigger->ops = &vcnl4010_trigger_ops;
+	iio_trigger_set_drvdata(trigger, indio_dev);
+
+	return devm_iio_trigger_register(&client->dev, trigger);
+}
+
 static int vcnl4000_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
@@ -387,14 +1031,59 @@ static int vcnl4000_probe(struct i2c_client *client,
 	dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n",
 		data->chip_spec->prod, data->rev);
 
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->info = &vcnl4000_info;
-	indio_dev->channels = vcnl4000_channels;
-	indio_dev->num_channels = ARRAY_SIZE(vcnl4000_channels);
+	if (device_property_read_u32(&client->dev, "proximity-near-level",
+				     &data->near_level))
+		data->near_level = 0;
+
+	indio_dev->info = data->chip_spec->info;
+	indio_dev->channels = data->chip_spec->channels;
+	indio_dev->num_channels = data->chip_spec->num_channels;
 	indio_dev->name = VCNL4000_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	return devm_iio_device_register(&client->dev, indio_dev);
+	if (client->irq && data->chip_spec->irq_support) {
+		ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev,
+						      NULL,
+						      vcnl4010_trigger_handler,
+						      &vcnl4010_buffer_ops);
+		if (ret < 0) {
+			dev_err(&client->dev,
+				"unable to setup iio triggered buffer\n");
+			return ret;
+		}
+
+		ret = devm_request_threaded_irq(&client->dev, client->irq,
+						NULL, vcnl4010_irq_thread,
+						IRQF_TRIGGER_FALLING |
+						IRQF_ONESHOT,
+						"vcnl4010_irq",
+						indio_dev);
+		if (ret < 0) {
+			dev_err(&client->dev, "irq request failed\n");
+			return ret;
+		}
+
+		ret = vcnl4010_probe_trigger(indio_dev);
+		if (ret < 0)
+			return ret;
+	}
+
+	ret = pm_runtime_set_active(&client->dev);
+	if (ret < 0)
+		goto fail_poweroff;
+
+	ret = iio_device_register(indio_dev);
+	if (ret < 0)
+		goto fail_poweroff;
+
+	pm_runtime_enable(&client->dev);
+	pm_runtime_set_autosuspend_delay(&client->dev, VCNL4000_SLEEP_DELAY_MS);
+	pm_runtime_use_autosuspend(&client->dev);
+
+	return 0;
+fail_poweroff:
+	data->chip_spec->set_power_state(data, false);
+	return ret;
 }
 
 static const struct of_device_id vcnl_4000_of_match[] = {
@@ -422,17 +1111,56 @@ static const struct of_device_id vcnl_4000_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, vcnl_4000_of_match);
 
+static void vcnl4000_remove(struct i2c_client *client)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+	int ret;
+
+	pm_runtime_dont_use_autosuspend(&client->dev);
+	pm_runtime_disable(&client->dev);
+	iio_device_unregister(indio_dev);
+	pm_runtime_set_suspended(&client->dev);
+
+	ret = data->chip_spec->set_power_state(data, false);
+	if (ret)
+		dev_warn(&client->dev, "Failed to power down (%pe)\n",
+			 ERR_PTR(ret));
+}
+
+static int vcnl4000_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	return data->chip_spec->set_power_state(data, false);
+}
+
+static int vcnl4000_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct vcnl4000_data *data = iio_priv(indio_dev);
+
+	return data->chip_spec->set_power_state(data, true);
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4000_pm_ops, vcnl4000_runtime_suspend,
+				 vcnl4000_runtime_resume, NULL);
+
 static struct i2c_driver vcnl4000_driver = {
 	.driver = {
 		.name   = VCNL4000_DRV_NAME,
+		.pm	= pm_ptr(&vcnl4000_pm_ops),
 		.of_match_table = vcnl_4000_of_match,
 	},
 	.probe  = vcnl4000_probe,
 	.id_table = vcnl4000_id,
+	.remove	= vcnl4000_remove,
 };
 
 module_i2c_driver(vcnl4000_driver);
 
 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
+MODULE_AUTHOR("Mathieu Othacehe <m.othacehe@gmail.com>");
 MODULE_DESCRIPTION("Vishay VCNL4000 proximity/ambient light sensor driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/iio/light/vcnl4035.c b/drivers/iio/light/vcnl4035.c
index cca4db312bd3..3ed37f6057fb 100644
--- a/drivers/iio/light/vcnl4035.c
+++ b/drivers/iio/light/vcnl4035.c
@@ -102,7 +102,8 @@ static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct vcnl4035_data *data = iio_priv(indio_dev);
-	u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)];
+	/* Ensure naturally aligned timestamp */
+	u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)]  __aligned(8);
 	int ret;
 
 	ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer);
@@ -144,9 +145,7 @@ static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on)
 	struct device *dev = &data->client->dev;
 
 	if (on) {
-		ret = pm_runtime_get_sync(dev);
-		if (ret < 0)
-			pm_runtime_put_noidle(dev);
+		ret = pm_runtime_resume_and_get(dev);
 	} else {
 		pm_runtime_mark_last_busy(dev);
 		ret = pm_runtime_put_autosuspend(dev);
@@ -507,11 +506,10 @@ static int vcnl4035_probe_trigger(struct iio_dev *indio_dev)
 
 	data->drdy_trigger0 = devm_iio_trigger_alloc(
 			indio_dev->dev.parent,
-			"%s-dev%d", indio_dev->name, indio_dev->id);
+			"%s-dev%d", indio_dev->name, iio_device_id(indio_dev));
 	if (!data->drdy_trigger0)
 		return -ENOMEM;
 
-	data->drdy_trigger0->dev.parent = indio_dev->dev.parent;
 	data->drdy_trigger0->ops = &vcnl4035_trigger_ops;
 	iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev);
 	ret = devm_iio_trigger_register(indio_dev->dev.parent,
@@ -564,7 +562,6 @@ static int vcnl4035_probe(struct i2c_client *client,
 	data->client = client;
 	data->regmap = regmap;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &vcnl4035_info;
 	indio_dev->name = VCNL4035_DRV_NAME;
 	indio_dev->channels = vcnl4035_channels;
@@ -604,20 +601,24 @@ fail_poweroff:
 	return ret;
 }
 
-static int vcnl4035_remove(struct i2c_client *client)
+static void vcnl4035_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	int ret;
 
 	pm_runtime_dont_use_autosuspend(&client->dev);
 	pm_runtime_disable(&client->dev);
 	iio_device_unregister(indio_dev);
 	pm_runtime_set_suspended(&client->dev);
 
-	return vcnl4035_set_als_power_state(iio_priv(indio_dev),
-					VCNL4035_MODE_ALS_DISABLE);
+	ret = vcnl4035_set_als_power_state(iio_priv(indio_dev),
+					   VCNL4035_MODE_ALS_DISABLE);
+	if (ret)
+		dev_warn(&client->dev, "Failed to put device into standby (%pe)\n",
+			 ERR_PTR(ret));
 }
 
-static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev)
+static int vcnl4035_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct vcnl4035_data *data = iio_priv(indio_dev);
@@ -629,7 +630,7 @@ static int __maybe_unused vcnl4035_runtime_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused vcnl4035_runtime_resume(struct device *dev)
+static int vcnl4035_runtime_resume(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
 	struct vcnl4035_data *data = iio_priv(indio_dev);
@@ -646,12 +647,14 @@ static int __maybe_unused vcnl4035_runtime_resume(struct device *dev)
 	return 0;
 }
 
-static const struct dev_pm_ops vcnl4035_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(vcnl4035_runtime_suspend,
-			   vcnl4035_runtime_resume, NULL)
+static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4035_pm_ops, vcnl4035_runtime_suspend,
+				 vcnl4035_runtime_resume, NULL);
+
+static const struct i2c_device_id vcnl4035_id[] = {
+	{ "vcnl4035", 0 },
+	{ }
 };
+MODULE_DEVICE_TABLE(i2c, vcnl4035_id);
 
 static const struct of_device_id vcnl4035_of_match[] = {
 	{ .compatible = "vishay,vcnl4035", },
@@ -662,11 +665,12 @@ MODULE_DEVICE_TABLE(of, vcnl4035_of_match);
 static struct i2c_driver vcnl4035_driver = {
 	.driver = {
 		.name   = VCNL4035_DRV_NAME,
-		.pm	= &vcnl4035_pm_ops,
+		.pm	= pm_ptr(&vcnl4035_pm_ops),
 		.of_match_table = vcnl4035_of_match,
 	},
 	.probe  = vcnl4035_probe,
 	.remove	= vcnl4035_remove,
+	.id_table = vcnl4035_id,
 };
 
 module_i2c_driver(vcnl4035_driver);
diff --git a/drivers/iio/light/veml6030.c b/drivers/iio/light/veml6030.c
index aa25b87fca8f..9a7800cdfee2 100644
--- a/drivers/iio/light/veml6030.c
+++ b/drivers/iio/light/veml6030.c
@@ -128,7 +128,7 @@ static ssize_t in_illuminance_period_available_show(struct device *dev,
 		return -EINVAL;
 	}
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", period_values[x]);
+	return sysfs_emit(buf, "%s\n", period_values[x]);
 }
 
 static IIO_DEVICE_ATTR_RO(in_illuminance_period_available, 0);
@@ -814,7 +814,6 @@ static int veml6030_probe(struct i2c_client *client,
 	data->client = client;
 	data->regmap = regmap;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = "veml6030";
 	indio_dev->channels = veml6030_channels;
 	indio_dev->num_channels = ARRAY_SIZE(veml6030_channels);
@@ -847,7 +846,7 @@ static int veml6030_probe(struct i2c_client *client,
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-static int __maybe_unused veml6030_runtime_suspend(struct device *dev)
+static int veml6030_runtime_suspend(struct device *dev)
 {
 	int ret;
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -860,7 +859,7 @@ static int __maybe_unused veml6030_runtime_suspend(struct device *dev)
 	return ret;
 }
 
-static int __maybe_unused veml6030_runtime_resume(struct device *dev)
+static int veml6030_runtime_resume(struct device *dev)
 {
 	int ret;
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -873,12 +872,8 @@ static int __maybe_unused veml6030_runtime_resume(struct device *dev)
 	return ret;
 }
 
-static const struct dev_pm_ops veml6030_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(veml6030_runtime_suspend,
-				veml6030_runtime_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(veml6030_pm_ops, veml6030_runtime_suspend,
+				 veml6030_runtime_resume, NULL);
 
 static const struct of_device_id veml6030_of_match[] = {
 	{ .compatible = "vishay,veml6030" },
@@ -896,7 +891,7 @@ static struct i2c_driver veml6030_driver = {
 	.driver = {
 		.name = "veml6030",
 		.of_match_table = veml6030_of_match,
-		.pm = &veml6030_pm_ops,
+		.pm = pm_ptr(&veml6030_pm_ops),
 	},
 	.probe = veml6030_probe,
 	.id_table = veml6030_id,
diff --git a/drivers/iio/light/veml6070.c b/drivers/iio/light/veml6070.c
index 0be553ad5989..cfa4e9e7c803 100644
--- a/drivers/iio/light/veml6070.c
+++ b/drivers/iio/light/veml6070.c
@@ -151,7 +151,6 @@ static int veml6070_probe(struct i2c_client *client,
 	data->client1 = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &veml6070_info;
 	indio_dev->channels = veml6070_channels;
 	indio_dev->num_channels = ARRAY_SIZE(veml6070_channels);
@@ -181,15 +180,13 @@ fail:
 	return ret;
 }
 
-static int veml6070_remove(struct i2c_client *client)
+static void veml6070_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct veml6070_data *data = iio_priv(indio_dev);
 
 	iio_device_unregister(indio_dev);
 	i2c_unregister_device(data->client2);
-
-	return 0;
 }
 
 static const struct i2c_device_id veml6070_id[] = {
diff --git a/drivers/iio/light/vl6180.c b/drivers/iio/light/vl6180.c
index d9533a76b8f6..d47a4f6f4e87 100644
--- a/drivers/iio/light/vl6180.c
+++ b/drivers/iio/light/vl6180.c
@@ -16,6 +16,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
@@ -391,7 +392,7 @@ static int vl6180_set_it(struct vl6180_data *data, int val, int val2)
 {
 	int ret, it_ms;
 
-	it_ms = (val2 + 500) / 1000; /* round to ms */
+	it_ms = DIV_ROUND_CLOSEST(val2, 1000); /* round to ms */
 	if (val != 0 || it_ms < 1 || it_ms > 512)
 		return -EINVAL;
 
@@ -508,7 +509,6 @@ static int vl6180_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &vl6180_info;
 	indio_dev->channels = vl6180_channels;
 	indio_dev->num_channels = ARRAY_SIZE(vl6180_channels);
@@ -537,7 +537,7 @@ MODULE_DEVICE_TABLE(i2c, vl6180_id);
 static struct i2c_driver vl6180_driver = {
 	.driver = {
 		.name   = VL6180_DRV_NAME,
-		.of_match_table = of_match_ptr(vl6180_of_match),
+		.of_match_table = vl6180_of_match,
 	},
 	.probe  = vl6180_probe,
 	.id_table = vl6180_id,
diff --git a/drivers/iio/light/zopt2201.c b/drivers/iio/light/zopt2201.c
index 5f54f39e7a4c..e0bc9df9c88b 100644
--- a/drivers/iio/light/zopt2201.c
+++ b/drivers/iio/light/zopt2201.c
@@ -19,6 +19,8 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
+#include <asm/unaligned.h>
+
 #define ZOPT2201_DRV_NAME "zopt2201"
 
 /* Registers */
@@ -219,7 +221,7 @@ static int zopt2201_read(struct zopt2201_data *data, u8 reg)
 		goto fail;
 	mutex_unlock(&data->lock);
 
-	return (buf[2] << 16) | (buf[1] << 8) | buf[0];
+	return get_unaligned_le24(&buf[0]);
 
 fail:
 	mutex_unlock(&data->lock);
@@ -525,7 +527,6 @@ static int zopt2201_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &zopt2201_info;
 	indio_dev->channels = zopt2201_channels;
 	indio_dev->num_channels = ARRAY_SIZE(zopt2201_channels);
diff --git a/drivers/iio/magnetometer/Kconfig b/drivers/iio/magnetometer/Kconfig
index 1697a8c03506..b91fc5e6a26e 100644
--- a/drivers/iio/magnetometer/Kconfig
+++ b/drivers/iio/magnetometer/Kconfig
@@ -9,7 +9,6 @@ menu "Magnetometer sensors"
 config AK8974
 	tristate "Asahi Kasei AK8974 3-Axis Magnetometer"
 	depends on I2C
-	depends on OF
 	select REGMAP_I2C
 	select IIO_BUFFER
 	select IIO_TRIGGERED_BUFFER
@@ -28,7 +27,7 @@ config AK8975
 	select IIO_TRIGGERED_BUFFER
 	help
 	  Say yes here to build support for Asahi Kasei AK8975, AK8963,
-	  AK09911 or AK09912 3-Axis Magnetometer.
+	  AK09911, AK09912 or AK09916 3-Axis Magnetometer.
 
 	  To compile this driver as a module, choose M here: the module
 	  will be called ak8975.
@@ -95,7 +94,6 @@ config MAG3110
 config HID_SENSOR_MAGNETOMETER_3D
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Magenetometer 3D"
@@ -118,30 +116,35 @@ config IIO_ST_MAGN_3AXIS
 	tristate "STMicroelectronics magnetometers 3-Axis Driver"
 	depends on (I2C || SPI_MASTER) && SYSFS
 	select IIO_ST_SENSORS_CORE
-	select IIO_ST_MAGN_I2C_3AXIS if (I2C)
-	select IIO_ST_MAGN_SPI_3AXIS if (SPI_MASTER)
 	select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
 	help
 	  Say yes here to build support for STMicroelectronics magnetometers:
 	  LSM303DLHC, LSM303DLM, LIS3MDL.
 
-	  This driver can also be built as a module. If so, these modules
-	  will be created:
-	  - st_magn (core functions for the driver [it is mandatory]);
-	  - st_magn_i2c (necessary for the I2C devices [optional*]);
-	  - st_magn_spi (necessary for the SPI devices [optional*]);
-
-	  (*) one of these is necessary to do something.
+	  Also need to enable at least one of I2C and SPI interface drivers
+	  below.
 
 config IIO_ST_MAGN_I2C_3AXIS
-	tristate
-	depends on IIO_ST_MAGN_3AXIS
-	depends on IIO_ST_SENSORS_I2C
+	tristate "STMicroelectronics magnetometers 3-Axis I2C Interface"
+	depends on I2C && IIO_ST_MAGN_3AXIS
+	default I2C && IIO_ST_MAGN_3AXIS
+	select IIO_ST_SENSORS_I2C
+	help
+	  Build support for STMicroelectronics magnetometers I2C interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_magn_i2c.
 
 config IIO_ST_MAGN_SPI_3AXIS
-	tristate
-	depends on IIO_ST_MAGN_3AXIS
-	depends on IIO_ST_SENSORS_SPI
+	tristate "STMicroelectronics magnetometers 3-Axis SPI Interface"
+	depends on SPI_MASTER && IIO_ST_MAGN_3AXIS
+	default SPI_MASTER && IIO_ST_MAGN_3AXIS
+	select IIO_ST_SENSORS_SPI
+	help
+	  Build support for STMicroelectronics magnetometers SPI interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_magn_spi.
 
 config SENSORS_HMC5843
 	tristate
@@ -205,4 +208,19 @@ config SENSORS_RM3100_SPI
 	  To compile this driver as a module, choose M here: the module
 	  will be called rm3100-spi.
 
+config YAMAHA_YAS530
+	tristate "Yamaha YAS530 family of 3-Axis Magnetometers (I2C)"
+	depends on I2C
+	select REGMAP_I2C
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	help
+	  Say Y here to add support for the Yamaha YAS530 series of
+	  3-Axis Magnetometers. YAS530, YAS532, YAS533 and YAS537 are
+	  supported.
+
+	  This driver can also be compiled as a module.
+	  To compile this driver as a module, choose M here: the module
+	  will be called yamaha-yas.
+
 endmenu
diff --git a/drivers/iio/magnetometer/Makefile b/drivers/iio/magnetometer/Makefile
index ba1bc34b82fa..b9f45b7fafc3 100644
--- a/drivers/iio/magnetometer/Makefile
+++ b/drivers/iio/magnetometer/Makefile
@@ -28,3 +28,5 @@ obj-$(CONFIG_SENSORS_HMC5843_SPI)	+= hmc5843_spi.o
 obj-$(CONFIG_SENSORS_RM3100)		+= rm3100-core.o
 obj-$(CONFIG_SENSORS_RM3100_I2C)	+= rm3100-i2c.o
 obj-$(CONFIG_SENSORS_RM3100_SPI)	+= rm3100-spi.o
+
+obj-$(CONFIG_YAMAHA_YAS530)		+= yamaha-yas530.o
diff --git a/drivers/iio/magnetometer/ak8974.c b/drivers/iio/magnetometer/ak8974.c
index d32996702110..7ec9ab3beb45 100644
--- a/drivers/iio/magnetometer/ak8974.c
+++ b/drivers/iio/magnetometer/ak8974.c
@@ -12,6 +12,7 @@
  * Author: Linus Walleij <linus.walleij@linaro.org>
  */
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/kernel.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
@@ -49,6 +50,7 @@
 #define AK8974_WHOAMI_VALUE_AMI306 0x46
 #define AK8974_WHOAMI_VALUE_AMI305 0x47
 #define AK8974_WHOAMI_VALUE_AK8974 0x48
+#define AK8974_WHOAMI_VALUE_HSCDTD008A 0x49
 
 #define AK8974_DATA_X		0x10
 #define AK8974_DATA_Y		0x12
@@ -140,6 +142,12 @@
 #define AK8974_INT_CTRL_PULSE	BIT(1) /* 0 = latched; 1 = pulse (50 usec) */
 #define AK8974_INT_CTRL_RESDEF	(AK8974_INT_CTRL_XYZEN | AK8974_INT_CTRL_POL)
 
+/* HSCDTD008A-specific control register */
+#define HSCDTD008A_CTRL4	0x1E
+#define HSCDTD008A_CTRL4_MMD	BIT(7)	/* must be set to 1 */
+#define HSCDTD008A_CTRL4_RANGE	BIT(4)	/* 0 = 14-bit output; 1 = 15-bit output */
+#define HSCDTD008A_CTRL4_RESDEF	(HSCDTD008A_CTRL4_MMD | HSCDTD008A_CTRL4_RANGE)
+
 /* The AMI305 has elaborate FW version and serial number registers */
 #define AMI305_VER		0xE8
 #define AMI305_SN		0xEA
@@ -173,6 +181,7 @@
  * @drdy_irq: uses the DRDY IRQ line
  * @drdy_complete: completion for DRDY
  * @drdy_active_low: the DRDY IRQ is active low
+ * @scan: timestamps
  */
 struct ak8974 {
 	struct i2c_client *i2c;
@@ -185,6 +194,11 @@ struct ak8974 {
 	bool drdy_irq;
 	struct completion drdy_complete;
 	bool drdy_active_low;
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		__le16 channels[3];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 static const char ak8974_reg_avdd[] = "avdd";
@@ -241,10 +255,17 @@ static int ak8974_reset(struct ak8974 *ak8974)
 	ret = regmap_write(ak8974->map, AK8974_CTRL3, AK8974_CTRL3_RESDEF);
 	if (ret)
 		return ret;
-	ret = regmap_write(ak8974->map, AK8974_INT_CTRL,
-			   AK8974_INT_CTRL_RESDEF);
-	if (ret)
-		return ret;
+	if (ak8974->variant != AK8974_WHOAMI_VALUE_HSCDTD008A) {
+		ret = regmap_write(ak8974->map, AK8974_INT_CTRL,
+				   AK8974_INT_CTRL_RESDEF);
+		if (ret)
+			return ret;
+	} else {
+		ret = regmap_write(ak8974->map, HSCDTD008A_CTRL4,
+				   HSCDTD008A_CTRL4_RESDEF);
+		if (ret)
+			return ret;
+	}
 
 	/* After reset, power off is default state */
 	return ak8974_set_power(ak8974, AK8974_PWR_OFF);
@@ -267,6 +288,8 @@ static int ak8974_configure(struct ak8974 *ak8974)
 		if (ret)
 			return ret;
 	}
+	if (ak8974->variant == AK8974_WHOAMI_VALUE_HSCDTD008A)
+		return 0;
 	ret = regmap_write(ak8974->map, AK8974_INT_CTRL, AK8974_INT_CTRL_POL);
 	if (ret)
 		return ret;
@@ -477,7 +500,7 @@ static int ak8974_detect(struct ak8974 *ak8974)
 	switch (whoami) {
 	case AK8974_WHOAMI_VALUE_AMI306:
 		name = "ami306";
-		/* fall-through */
+		fallthrough;
 	case AK8974_WHOAMI_VALUE_AMI305:
 		ret = regmap_read(ak8974->map, AMI305_VER, &fw);
 		if (ret)
@@ -495,6 +518,10 @@ static int ak8974_detect(struct ak8974 *ak8974)
 		name = "ak8974";
 		dev_info(&ak8974->i2c->dev, "detected AK8974\n");
 		break;
+	case AK8974_WHOAMI_VALUE_HSCDTD008A:
+		name = "hscdtd008a";
+		dev_info(&ak8974->i2c->dev, "detected hscdtd008a\n");
+		break;
 	default:
 		dev_err(&ak8974->i2c->dev, "unsupported device (%02x) ",
 			whoami);
@@ -534,54 +561,109 @@ static int ak8974_detect(struct ak8974 *ak8974)
 	return 0;
 }
 
+static int ak8974_measure_channel(struct ak8974 *ak8974, unsigned long address,
+				  int *val)
+{
+	__le16 hw_values[3];
+	int ret;
+
+	pm_runtime_get_sync(&ak8974->i2c->dev);
+	mutex_lock(&ak8974->lock);
+
+	/*
+	 * We read all axes and discard all but one, for optimized
+	 * reading, use the triggered buffer.
+	 */
+	ret = ak8974_trigmeas(ak8974);
+	if (ret)
+		goto out_unlock;
+	ret = ak8974_getresult(ak8974, hw_values);
+	if (ret)
+		goto out_unlock;
+	/*
+	 * This explicit cast to (s16) is necessary as the measurement
+	 * is done in 2's complement with positive and negative values.
+	 * The follwing assignment to *val will then convert the signed
+	 * s16 value to a signed int value.
+	 */
+	*val = (s16)le16_to_cpu(hw_values[address]);
+out_unlock:
+	mutex_unlock(&ak8974->lock);
+	pm_runtime_mark_last_busy(&ak8974->i2c->dev);
+	pm_runtime_put_autosuspend(&ak8974->i2c->dev);
+
+	return ret;
+}
+
 static int ak8974_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2,
 			   long mask)
 {
 	struct ak8974 *ak8974 = iio_priv(indio_dev);
-	__le16 hw_values[3];
-	int ret = -EINVAL;
-
-	pm_runtime_get_sync(&ak8974->i2c->dev);
-	mutex_lock(&ak8974->lock);
+	int ret;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
 		if (chan->address > 2) {
 			dev_err(&ak8974->i2c->dev, "faulty channel address\n");
-			ret = -EIO;
-			goto out_unlock;
+			return -EIO;
 		}
-		ret = ak8974_trigmeas(ak8974);
+		ret = ak8974_measure_channel(ak8974, chan->address, val);
 		if (ret)
-			goto out_unlock;
-		ret = ak8974_getresult(ak8974, hw_values);
-		if (ret)
-			goto out_unlock;
-
-		/*
-		 * We read all axes and discard all but one, for optimized
-		 * reading, use the triggered buffer.
-		 */
-		*val = (s16)le16_to_cpu(hw_values[chan->address]);
-
-		ret = IIO_VAL_INT;
+			return ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		switch (ak8974->variant) {
+		case AK8974_WHOAMI_VALUE_AMI306:
+		case AK8974_WHOAMI_VALUE_AMI305:
+			/*
+			 * The datasheet for AMI305 and AMI306, page 6
+			 * specifies the range of the sensor to be
+			 * +/- 12 Gauss.
+			 */
+			*val = 12;
+			/*
+			 * 12 bits are used, +/- 2^11
+			 * [ -2048 .. 2047 ] (manual page 20)
+			 * [ 0xf800 .. 0x07ff ]
+			 */
+			*val2 = 11;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		case AK8974_WHOAMI_VALUE_HSCDTD008A:
+			/*
+			 * The datasheet for HSCDTF008A, page 3 specifies the
+			 * range of the sensor as +/- 2.4 mT per axis, which
+			 * corresponds to +/- 2400 uT = +/- 24 Gauss.
+			 */
+			*val = 24;
+			/*
+			 * 15 bits are used (set up in CTRL4), +/- 2^14
+			 * [ -16384 .. 16383 ] (manual page 24)
+			 * [ 0xc000 .. 0x3fff ]
+			 */
+			*val2 = 14;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		default:
+			/* GUESSING +/- 12 Gauss */
+			*val = 12;
+			/* GUESSING 12 bits ADC +/- 2^11 */
+			*val2 = 11;
+			return IIO_VAL_FRACTIONAL_LOG2;
+		}
+		break;
+	default:
+		/* Unknown request */
+		break;
 	}
 
- out_unlock:
-	mutex_unlock(&ak8974->lock);
-	pm_runtime_mark_last_busy(&ak8974->i2c->dev);
-	pm_runtime_put_autosuspend(&ak8974->i2c->dev);
-
-	return ret;
+	return -EINVAL;
 }
 
 static void ak8974_fill_buffer(struct iio_dev *indio_dev)
 {
 	struct ak8974 *ak8974 = iio_priv(indio_dev);
 	int ret;
-	__le16 hw_values[8]; /* Three axes + 64bit padding */
 
 	pm_runtime_get_sync(&ak8974->i2c->dev);
 	mutex_lock(&ak8974->lock);
@@ -591,13 +673,13 @@ static void ak8974_fill_buffer(struct iio_dev *indio_dev)
 		dev_err(&ak8974->i2c->dev, "error triggering measure\n");
 		goto out_unlock;
 	}
-	ret = ak8974_getresult(ak8974, hw_values);
+	ret = ak8974_getresult(ak8974, ak8974->scan.channels);
 	if (ret) {
 		dev_err(&ak8974->i2c->dev, "error getting measures\n");
 		goto out_unlock;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, hw_values,
+	iio_push_to_buffers_with_timestamp(indio_dev, &ak8974->scan,
 					   iio_get_time_ns(indio_dev));
 
  out_unlock:
@@ -631,27 +713,44 @@ static const struct iio_chan_spec_ext_info ak8974_ext_info[] = {
 	{ },
 };
 
-#define AK8974_AXIS_CHANNEL(axis, index)				\
+#define AK8974_AXIS_CHANNEL(axis, index, bits)				\
 	{								\
 		.type = IIO_MAGN,					\
 		.modified = 1,						\
 		.channel2 = IIO_MOD_##axis,				\
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+			BIT(IIO_CHAN_INFO_SCALE),			\
 		.ext_info = ak8974_ext_info,				\
 		.address = index,					\
 		.scan_index = index,					\
 		.scan_type = {						\
 			.sign = 's',					\
-			.realbits = 16,					\
+			.realbits = bits,				\
 			.storagebits = 16,				\
 			.endianness = IIO_LE				\
 		},							\
 	}
 
-static const struct iio_chan_spec ak8974_channels[] = {
-	AK8974_AXIS_CHANNEL(X, 0),
-	AK8974_AXIS_CHANNEL(Y, 1),
-	AK8974_AXIS_CHANNEL(Z, 2),
+/*
+ * We have no datasheet for the AK8974 but we guess that its
+ * ADC is 12 bits. The AMI305 and AMI306 certainly has 12bit
+ * ADC.
+ */
+static const struct iio_chan_spec ak8974_12_bits_channels[] = {
+	AK8974_AXIS_CHANNEL(X, 0, 12),
+	AK8974_AXIS_CHANNEL(Y, 1, 12),
+	AK8974_AXIS_CHANNEL(Z, 2, 12),
+	IIO_CHAN_SOFT_TIMESTAMP(3),
+};
+
+/*
+ * The HSCDTD008A has 15 bits resolution the way we set it up
+ * in CTRL4.
+ */
+static const struct iio_chan_spec ak8974_15_bits_channels[] = {
+	AK8974_AXIS_CHANNEL(X, 0, 15),
+	AK8974_AXIS_CHANNEL(Y, 1, 15),
+	AK8974_AXIS_CHANNEL(Z, 2, 15),
 	IIO_CHAN_SOFT_TIMESTAMP(3),
 };
 
@@ -674,18 +773,18 @@ static bool ak8974_writeable_reg(struct device *dev, unsigned int reg)
 	case AK8974_INT_CTRL:
 	case AK8974_INT_THRES:
 	case AK8974_INT_THRES + 1:
+		return true;
 	case AK8974_PRESET:
 	case AK8974_PRESET + 1:
-		return true;
+		return ak8974->variant != AK8974_WHOAMI_VALUE_HSCDTD008A;
 	case AK8974_OFFSET_X:
 	case AK8974_OFFSET_X + 1:
 	case AK8974_OFFSET_Y:
 	case AK8974_OFFSET_Y + 1:
 	case AK8974_OFFSET_Z:
 	case AK8974_OFFSET_Z + 1:
-		if (ak8974->variant == AK8974_WHOAMI_VALUE_AK8974)
-			return true;
-		return false;
+		return ak8974->variant == AK8974_WHOAMI_VALUE_AK8974 ||
+		       ak8974->variant == AK8974_WHOAMI_VALUE_HSCDTD008A;
 	case AMI305_OFFSET_X:
 	case AMI305_OFFSET_X + 1:
 	case AMI305_OFFSET_Y:
@@ -734,8 +833,7 @@ static int ak8974_probe(struct i2c_client *i2c,
 	ak8974->i2c = i2c;
 	mutex_init(&ak8974->lock);
 
-	ret = iio_read_mount_matrix(&i2c->dev, "mount-matrix",
-				    &ak8974->orientation);
+	ret = iio_read_mount_matrix(&i2c->dev, &ak8974->orientation);
 	if (ret)
 		return ret;
 
@@ -745,10 +843,8 @@ static int ak8974_probe(struct i2c_client *i2c,
 	ret = devm_regulator_bulk_get(&i2c->dev,
 				      ARRAY_SIZE(ak8974->regs),
 				      ak8974->regs);
-	if (ret < 0) {
-		dev_err(&i2c->dev, "cannot get regulators\n");
-		return ret;
-	}
+	if (ret < 0)
+		return dev_err_probe(&i2c->dev, ret, "cannot get regulators\n");
 
 	ret = regulator_bulk_enable(ARRAY_SIZE(ak8974->regs), ak8974->regs);
 	if (ret < 0) {
@@ -764,19 +860,21 @@ static int ak8974_probe(struct i2c_client *i2c,
 	ak8974->map = devm_regmap_init_i2c(i2c, &ak8974_regmap_config);
 	if (IS_ERR(ak8974->map)) {
 		dev_err(&i2c->dev, "failed to allocate register map\n");
+		pm_runtime_put_noidle(&i2c->dev);
+		pm_runtime_disable(&i2c->dev);
 		return PTR_ERR(ak8974->map);
 	}
 
 	ret = ak8974_set_power(ak8974, AK8974_PWR_ON);
 	if (ret) {
 		dev_err(&i2c->dev, "could not power on\n");
-		goto power_off;
+		goto disable_pm;
 	}
 
 	ret = ak8974_detect(ak8974);
 	if (ret) {
 		dev_err(&i2c->dev, "neither AK8974 nor AMI30x found\n");
-		goto power_off;
+		goto disable_pm;
 	}
 
 	ret = ak8974_selftest(ak8974);
@@ -786,17 +884,24 @@ static int ak8974_probe(struct i2c_client *i2c,
 	ret = ak8974_reset(ak8974);
 	if (ret) {
 		dev_err(&i2c->dev, "AK8974 reset failed\n");
-		goto power_off;
+		goto disable_pm;
 	}
 
-	pm_runtime_set_autosuspend_delay(&i2c->dev,
-					 AK8974_AUTOSUSPEND_DELAY);
-	pm_runtime_use_autosuspend(&i2c->dev);
-	pm_runtime_put(&i2c->dev);
-
-	indio_dev->dev.parent = &i2c->dev;
-	indio_dev->channels = ak8974_channels;
-	indio_dev->num_channels = ARRAY_SIZE(ak8974_channels);
+	switch (ak8974->variant) {
+	case AK8974_WHOAMI_VALUE_AMI306:
+	case AK8974_WHOAMI_VALUE_AMI305:
+		indio_dev->channels = ak8974_12_bits_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ak8974_12_bits_channels);
+		break;
+	case AK8974_WHOAMI_VALUE_HSCDTD008A:
+		indio_dev->channels = ak8974_15_bits_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ak8974_15_bits_channels);
+		break;
+	default:
+		indio_dev->channels = ak8974_12_bits_channels;
+		indio_dev->num_channels = ARRAY_SIZE(ak8974_12_bits_channels);
+		break;
+	}
 	indio_dev->info = &ak8974_info;
 	indio_dev->available_scan_masks = ak8974_scan_masks;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -846,6 +951,11 @@ no_irq:
 		goto cleanup_buffer;
 	}
 
+	pm_runtime_set_autosuspend_delay(&i2c->dev,
+					 AK8974_AUTOSUSPEND_DELAY);
+	pm_runtime_use_autosuspend(&i2c->dev);
+	pm_runtime_put(&i2c->dev);
+
 	return 0;
 
 cleanup_buffer:
@@ -854,13 +964,12 @@ disable_pm:
 	pm_runtime_put_noidle(&i2c->dev);
 	pm_runtime_disable(&i2c->dev);
 	ak8974_set_power(ak8974, AK8974_PWR_OFF);
-power_off:
 	regulator_bulk_disable(ARRAY_SIZE(ak8974->regs), ak8974->regs);
 
 	return ret;
 }
 
-static int ak8974_remove(struct i2c_client *i2c)
+static void ak8974_remove(struct i2c_client *i2c)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(i2c);
 	struct ak8974 *ak8974 = iio_priv(indio_dev);
@@ -872,11 +981,9 @@ static int ak8974_remove(struct i2c_client *i2c)
 	pm_runtime_disable(&i2c->dev);
 	ak8974_set_power(ak8974, AK8974_PWR_OFF);
 	regulator_bulk_disable(ARRAY_SIZE(ak8974->regs), ak8974->regs);
-
-	return 0;
 }
 
-static int __maybe_unused ak8974_runtime_suspend(struct device *dev)
+static int ak8974_runtime_suspend(struct device *dev)
 {
 	struct ak8974 *ak8974 =
 		iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
@@ -887,7 +994,7 @@ static int __maybe_unused ak8974_runtime_suspend(struct device *dev)
 	return 0;
 }
 
-static int __maybe_unused ak8974_runtime_resume(struct device *dev)
+static int ak8974_runtime_resume(struct device *dev)
 {
 	struct ak8974 *ak8974 =
 		iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
@@ -915,23 +1022,21 @@ out_regulator_disable:
 	return ret;
 }
 
-static const struct dev_pm_ops ak8974_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(ak8974_runtime_suspend,
-			   ak8974_runtime_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(ak8974_dev_pm_ops, ak8974_runtime_suspend,
+				 ak8974_runtime_resume, NULL);
 
 static const struct i2c_device_id ak8974_id[] = {
 	{"ami305", 0 },
 	{"ami306", 0 },
 	{"ak8974", 0 },
+	{"hscdtd008a", 0 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ak8974_id);
 
 static const struct of_device_id ak8974_of_match[] = {
 	{ .compatible = "asahi-kasei,ak8974", },
+	{ .compatible = "alps,hscdtd008a", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ak8974_of_match);
@@ -939,8 +1044,8 @@ MODULE_DEVICE_TABLE(of, ak8974_of_match);
 static struct i2c_driver ak8974_driver = {
 	.driver	 = {
 		.name	= "ak8974",
-		.pm = &ak8974_dev_pm_ops,
-		.of_match_table = of_match_ptr(ak8974_of_match),
+		.pm = pm_ptr(&ak8974_dev_pm_ops),
+		.of_match_table = ak8974_of_match,
 	},
 	.probe	  = ak8974_probe,
 	.remove	  = ak8974_remove,
diff --git a/drivers/iio/magnetometer/ak8975.c b/drivers/iio/magnetometer/ak8975.c
index 3c881541ae72..caf03a2a98a5 100644
--- a/drivers/iio/magnetometer/ak8975.c
+++ b/drivers/iio/magnetometer/ak8975.c
@@ -8,6 +8,7 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
@@ -17,7 +18,6 @@
 #include <linux/delay.h>
 #include <linux/bitops.h>
 #include <linux/gpio/consumer.h>
-#include <linux/acpi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/pm_runtime.h>
 
@@ -78,6 +78,7 @@
  */
 #define AK09912_REG_WIA1		0x00
 #define AK09912_REG_WIA2		0x01
+#define AK09916_DEVICE_ID		0x09
 #define AK09912_DEVICE_ID		0x04
 #define AK09911_DEVICE_ID		0x05
 
@@ -208,6 +209,7 @@ enum asahi_compass_chipset {
 	AK8963,
 	AK09911,
 	AK09912,
+	AK09916,
 };
 
 enum ak_ctrl_reg_addr {
@@ -345,6 +347,31 @@ static const struct ak_def ak_def_array[] = {
 			AK09912_REG_HXL,
 			AK09912_REG_HYL,
 			AK09912_REG_HZL},
+	},
+	{
+		.type = AK09916,
+		.raw_to_gauss = ak09912_raw_to_gauss,
+		.range = 32752,
+		.ctrl_regs = {
+			AK09912_REG_ST1,
+			AK09912_REG_ST2,
+			AK09912_REG_CNTL2,
+			AK09912_REG_ASAX,
+			AK09912_MAX_REGS},
+		.ctrl_masks = {
+			AK09912_REG_ST1_DRDY_MASK,
+			AK09912_REG_ST2_HOFL_MASK,
+			0,
+			AK09912_REG_CNTL2_MODE_MASK},
+		.ctrl_modes = {
+			AK09912_REG_CNTL_MODE_POWER_DOWN,
+			AK09912_REG_CNTL_MODE_ONCE,
+			AK09912_REG_CNTL_MODE_SELF_TEST,
+			AK09912_REG_CNTL_MODE_FUSE_ROM},
+		.data_regs = {
+			AK09912_REG_HXL,
+			AK09912_REG_HYL,
+			AK09912_REG_HZL},
 	}
 };
 
@@ -358,6 +385,7 @@ struct ak8975_data {
 	u8			asa[3];
 	long			raw_to_gauss[3];
 	struct gpio_desc	*eoc_gpiod;
+	struct gpio_desc	*reset_gpiod;
 	int			eoc_irq;
 	wait_queue_head_t	data_ready_queue;
 	unsigned long		flags;
@@ -365,6 +393,12 @@ struct ak8975_data {
 	struct iio_mount_matrix orientation;
 	struct regulator	*vdd;
 	struct regulator	*vid;
+
+	/* Ensure natural alignment of timestamp */
+	struct {
+		s16 channels[3];
+		s64 ts __aligned(8);
+	} scan;
 };
 
 /* Enable attached power regulator if any. */
@@ -382,12 +416,16 @@ static int ak8975_power_on(const struct ak8975_data *data)
 	if (ret) {
 		dev_warn(&data->client->dev,
 			 "Failed to enable specified Vid supply\n");
+		regulator_disable(data->vdd);
 		return ret;
 	}
+
+	gpiod_set_value_cansleep(data->reset_gpiod, 0);
+
 	/*
-	 * According to the datasheet the power supply rise time i 200us
+	 * According to the datasheet the power supply rise time is 200us
 	 * and the minimum wait time before mode setting is 100us, in
-	 * total 300 us. Add some margin and say minimum 500us here.
+	 * total 300us. Add some margin and say minimum 500us here.
 	 */
 	usleep_range(500, 1000);
 	return 0;
@@ -396,6 +434,8 @@ static int ak8975_power_on(const struct ak8975_data *data)
 /* Disable attached power regulator if any. */
 static void ak8975_power_off(const struct ak8975_data *data)
 {
+	gpiod_set_value_cansleep(data->reset_gpiod, 1);
+
 	regulator_disable(data->vid);
 	regulator_disable(data->vdd);
 }
@@ -413,6 +453,7 @@ static int ak8975_who_i_am(struct i2c_client *client,
 	/*
 	 * Signature for each device:
 	 * Device   |  WIA1      |  WIA2
+	 * AK09916  |  DEVICE_ID_|  AK09916_DEVICE_ID
 	 * AK09912  |  DEVICE_ID |  AK09912_DEVICE_ID
 	 * AK09911  |  DEVICE_ID |  AK09911_DEVICE_ID
 	 * AK8975   |  DEVICE_ID |  NA
@@ -440,6 +481,10 @@ static int ak8975_who_i_am(struct i2c_client *client,
 		if (wia_val[1] == AK09912_DEVICE_ID)
 			return 0;
 		break;
+	case AK09916:
+		if (wia_val[1] == AK09916_DEVICE_ID)
+			return 0;
+		break;
 	default:
 		dev_err(&client->dev, "Type %d unknown\n", type);
 	}
@@ -767,7 +812,6 @@ static const struct iio_info ak8975_info = {
 	.read_raw = &ak8975_read_raw,
 };
 
-#ifdef CONFIG_ACPI
 static const struct acpi_device_id ak_acpi_match[] = {
 	{"AK8975", AK8975},
 	{"AK8963", AK8963},
@@ -779,7 +823,6 @@ static const struct acpi_device_id ak_acpi_match[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(acpi, ak_acpi_match);
-#endif
 
 static void ak8975_fill_buffer(struct iio_dev *indio_dev)
 {
@@ -787,7 +830,6 @@ static void ak8975_fill_buffer(struct iio_dev *indio_dev)
 	const struct i2c_client *client = data->client;
 	const struct ak_def *def = data->def;
 	int ret;
-	s16 buff[8]; /* 3 x 16 bits axis values + 1 aligned 64 bits timestamp */
 	__le16 fval[3];
 
 	mutex_lock(&data->lock);
@@ -810,12 +852,13 @@ static void ak8975_fill_buffer(struct iio_dev *indio_dev)
 	mutex_unlock(&data->lock);
 
 	/* Clamp to valid range. */
-	buff[0] = clamp_t(s16, le16_to_cpu(fval[0]), -def->range, def->range);
-	buff[1] = clamp_t(s16, le16_to_cpu(fval[1]), -def->range, def->range);
-	buff[2] = clamp_t(s16, le16_to_cpu(fval[2]), -def->range, def->range);
+	data->scan.channels[0] = clamp_t(s16, le16_to_cpu(fval[0]), -def->range, def->range);
+	data->scan.channels[1] = clamp_t(s16, le16_to_cpu(fval[1]), -def->range, def->range);
+	data->scan.channels[2] = clamp_t(s16, le16_to_cpu(fval[2]), -def->range, def->range);
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buff,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   iio_get_time_ns(indio_dev));
+
 	return;
 
 unlock:
@@ -839,6 +882,7 @@ static int ak8975_probe(struct i2c_client *client,
 	struct ak8975_data *data;
 	struct iio_dev *indio_dev;
 	struct gpio_desc *eoc_gpiod;
+	struct gpio_desc *reset_gpiod;
 	const void *match;
 	unsigned int i;
 	int err;
@@ -856,6 +900,16 @@ static int ak8975_probe(struct i2c_client *client,
 	if (eoc_gpiod)
 		gpiod_set_consumer_name(eoc_gpiod, "ak_8975");
 
+	/*
+	 * According to AK09911 datasheet, if reset GPIO is provided then
+	 * deassert reset on ak8975_power_on() and assert reset on
+	 * ak8975_power_off().
+	 */
+	reset_gpiod = devm_gpiod_get_optional(&client->dev,
+					      "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(reset_gpiod))
+		return PTR_ERR(reset_gpiod);
+
 	/* Register with IIO */
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (indio_dev == NULL)
@@ -866,16 +920,17 @@ static int ak8975_probe(struct i2c_client *client,
 
 	data->client = client;
 	data->eoc_gpiod = eoc_gpiod;
+	data->reset_gpiod = reset_gpiod;
 	data->eoc_irq = 0;
 
-	err = iio_read_mount_matrix(&client->dev, "mount-matrix", &data->orientation);
+	err = iio_read_mount_matrix(&client->dev, &data->orientation);
 	if (err)
 		return err;
 
 	/* id will be NULL when enumerated via ACPI */
 	match = device_get_match_data(&client->dev);
 	if (match) {
-		chipset = (enum asahi_compass_chipset)(match);
+		chipset = (uintptr_t)match;
 		name = dev_name(&client->dev);
 	} else if (id) {
 		chipset = (enum asahi_compass_chipset)(id->driver_data);
@@ -922,7 +977,6 @@ static int ak8975_probe(struct i2c_client *client,
 	}
 
 	mutex_init(&data->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = ak8975_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ak8975_channels);
 	indio_dev->info = &ak8975_info;
@@ -964,7 +1018,7 @@ power_off:
 	return err;
 }
 
-static int ak8975_remove(struct i2c_client *client)
+static void ak8975_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct ak8975_data *data = iio_priv(indio_dev);
@@ -976,11 +1030,8 @@ static int ak8975_remove(struct i2c_client *client)
 	iio_triggered_buffer_cleanup(indio_dev);
 	ak8975_set_mode(data, POWER_DOWN);
 	ak8975_power_off(data);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM
 static int ak8975_runtime_suspend(struct device *dev)
 {
 	struct i2c_client *client = to_i2c_client(dev);
@@ -1021,14 +1072,9 @@ static int ak8975_runtime_resume(struct device *dev)
 
 	return 0;
 }
-#endif /* CONFIG_PM */
 
-static const struct dev_pm_ops ak8975_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(ak8975_runtime_suspend,
-			   ak8975_runtime_resume, NULL)
-};
+static DEFINE_RUNTIME_DEV_PM_OPS(ak8975_dev_pm_ops, ak8975_runtime_suspend,
+				 ak8975_runtime_resume, NULL);
 
 static const struct i2c_device_id ak8975_id[] = {
 	{"ak8975", AK8975},
@@ -1036,6 +1082,7 @@ static const struct i2c_device_id ak8975_id[] = {
 	{"AK8963", AK8963},
 	{"ak09911", AK09911},
 	{"ak09912", AK09912},
+	{"ak09916", AK09916},
 	{}
 };
 
@@ -1050,6 +1097,8 @@ static const struct of_device_id ak8975_of_match[] = {
 	{ .compatible = "ak09911", },
 	{ .compatible = "asahi-kasei,ak09912", },
 	{ .compatible = "ak09912", },
+	{ .compatible = "asahi-kasei,ak09916", },
+	{ .compatible = "ak09916", },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ak8975_of_match);
@@ -1057,9 +1106,9 @@ MODULE_DEVICE_TABLE(of, ak8975_of_match);
 static struct i2c_driver ak8975_driver = {
 	.driver = {
 		.name	= "ak8975",
-		.pm = &ak8975_dev_pm_ops,
-		.of_match_table = of_match_ptr(ak8975_of_match),
-		.acpi_match_table = ACPI_PTR(ak_acpi_match),
+		.pm = pm_ptr(&ak8975_dev_pm_ops),
+		.of_match_table = ak8975_of_match,
+		.acpi_match_table = ak_acpi_match,
 	},
 	.probe		= ak8975_probe,
 	.remove		= ak8975_remove,
diff --git a/drivers/iio/magnetometer/bmc150_magn.c b/drivers/iio/magnetometer/bmc150_magn.c
index d4de16750b10..06d5a1ef1fbd 100644
--- a/drivers/iio/magnetometer/bmc150_magn.c
+++ b/drivers/iio/magnetometer/bmc150_magn.c
@@ -25,6 +25,7 @@
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 #include "bmc150_magn.h"
 
@@ -135,9 +136,13 @@ struct bmc150_magn_data {
 	 */
 	struct mutex mutex;
 	struct regmap *regmap;
+	struct regulator_bulk_data regulators[2];
 	struct iio_mount_matrix orientation;
-	/* 4 x 32 bits for x, y z, 4 bytes align, 64 bits timestamp */
-	s32 buffer[6];
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		s32 chans[3];
+		s64 timestamp __aligned(8);
+	} scan;
 	struct iio_trigger *dready_trig;
 	bool dready_trigger_on;
 	int max_odr;
@@ -190,7 +195,7 @@ static bool bmc150_magn_is_writeable_reg(struct device *dev, unsigned int reg)
 		return true;
 	default:
 		return false;
-	};
+	}
 }
 
 static bool bmc150_magn_is_volatile_reg(struct device *dev, unsigned int reg)
@@ -221,7 +226,7 @@ const struct regmap_config bmc150_magn_regmap_config = {
 	.writeable_reg = bmc150_magn_is_writeable_reg,
 	.volatile_reg = bmc150_magn_is_volatile_reg,
 };
-EXPORT_SYMBOL(bmc150_magn_regmap_config);
+EXPORT_SYMBOL_NS(bmc150_magn_regmap_config, IIO_BMC150_MAGN);
 
 static int bmc150_magn_set_power_mode(struct bmc150_magn_data *data,
 				      enum bmc150_magn_power_modes mode,
@@ -260,7 +265,7 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on)
 	int ret;
 
 	if (on) {
-		ret = pm_runtime_get_sync(data->dev);
+		ret = pm_runtime_resume_and_get(data->dev);
 	} else {
 		pm_runtime_mark_last_busy(data->dev);
 		ret = pm_runtime_put_autosuspend(data->dev);
@@ -269,9 +274,6 @@ static int bmc150_magn_set_power_state(struct bmc150_magn_data *data, bool on)
 	if (ret < 0) {
 		dev_err(data->dev,
 			"failed to change power state to %d\n", on);
-		if (on)
-			pm_runtime_put_noidle(data->dev);
-
 		return ret;
 	}
 #endif
@@ -673,11 +675,11 @@ static irqreturn_t bmc150_magn_trigger_handler(int irq, void *p)
 	int ret;
 
 	mutex_lock(&data->mutex);
-	ret = bmc150_magn_read_xyz(data, data->buffer);
+	ret = bmc150_magn_read_xyz(data, data->scan.chans);
 	if (ret < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   pf->timestamp);
 
 err:
@@ -692,12 +694,24 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
 	int ret, chip_id;
 	struct bmc150_magn_preset preset;
 
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->regulators),
+				    data->regulators);
+	if (ret < 0) {
+		dev_err(data->dev, "Failed to enable regulators: %d\n", ret);
+		return ret;
+	}
+	/*
+	 * 3ms power-on time according to datasheet, let's better
+	 * be safe than sorry and set this delay to 5ms.
+	 */
+	msleep(5);
+
 	ret = bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND,
 					 false);
 	if (ret < 0) {
 		dev_err(data->dev,
 			"Failed to bring up device from suspend mode\n");
-		return ret;
+		goto err_regulator_disable;
 	}
 
 	ret = regmap_read(data->regmap, BMC150_MAGN_REG_CHIP_ID, &chip_id);
@@ -752,6 +766,8 @@ static int bmc150_magn_init(struct bmc150_magn_data *data)
 
 err_poweroff:
 	bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND, true);
+err_regulator_disable:
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
 	return ret;
 }
 
@@ -766,20 +782,20 @@ static int bmc150_magn_reset_intr(struct bmc150_magn_data *data)
 	return regmap_read(data->regmap, BMC150_MAGN_REG_X_L, &tmp);
 }
 
-static int bmc150_magn_trig_try_reen(struct iio_trigger *trig)
+static void bmc150_magn_trig_reen(struct iio_trigger *trig)
 {
 	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
 	struct bmc150_magn_data *data = iio_priv(indio_dev);
 	int ret;
 
 	if (!data->dready_trigger_on)
-		return 0;
+		return;
 
 	mutex_lock(&data->mutex);
 	ret = bmc150_magn_reset_intr(data);
 	mutex_unlock(&data->mutex);
-
-	return ret;
+	if (ret)
+		dev_err(data->dev, "Failed to reset interrupt\n");
 }
 
 static int bmc150_magn_data_rdy_trigger_set_state(struct iio_trigger *trig,
@@ -817,7 +833,7 @@ err_unlock:
 
 static const struct iio_trigger_ops bmc150_magn_trigger_ops = {
 	.set_trigger_state = bmc150_magn_data_rdy_trigger_set_state,
-	.try_reenable = bmc150_magn_trig_try_reen,
+	.reenable = bmc150_magn_trig_reen,
 };
 
 static int bmc150_magn_buffer_preenable(struct iio_dev *indio_dev)
@@ -836,8 +852,6 @@ static int bmc150_magn_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops bmc150_magn_buffer_setup_ops = {
 	.preenable = bmc150_magn_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = bmc150_magn_buffer_postdisable,
 };
 
@@ -869,8 +883,14 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
 	data->irq = irq;
 	data->dev = dev;
 
-	ret = iio_read_mount_matrix(dev, "mount-matrix",
-				&data->orientation);
+	data->regulators[0].supply = "vdd";
+	data->regulators[1].supply = "vddio";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->regulators),
+				      data->regulators);
+	if (ret)
+		return dev_err_probe(dev, ret, "failed to get regulators\n");
+
+	ret = iio_read_mount_matrix(dev, &data->orientation);
 	if (ret)
 		return ret;
 
@@ -883,7 +903,6 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
 	if (ret < 0)
 		return ret;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->channels = bmc150_magn_channels;
 	indio_dev->num_channels = ARRAY_SIZE(bmc150_magn_channels);
 	indio_dev->available_scan_masks = bmc150_magn_scan_masks;
@@ -895,14 +914,13 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
 		data->dready_trig = devm_iio_trigger_alloc(dev,
 							   "%s-dev%d",
 							   indio_dev->name,
-							   indio_dev->id);
+							   iio_device_id(indio_dev));
 		if (!data->dready_trig) {
 			ret = -ENOMEM;
 			dev_err(dev, "iio trigger alloc failed\n");
 			goto err_poweroff;
 		}
 
-		data->dready_trig->dev.parent = dev;
 		data->dready_trig->ops = &bmc150_magn_trigger_ops;
 		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
 		ret = iio_trigger_register(data->dready_trig);
@@ -944,12 +962,15 @@ int bmc150_magn_probe(struct device *dev, struct regmap *regmap,
 	ret = iio_device_register(indio_dev);
 	if (ret < 0) {
 		dev_err(dev, "unable to register iio device\n");
-		goto err_buffer_cleanup;
+		goto err_pm_cleanup;
 	}
 
 	dev_dbg(dev, "Registered device %s\n", name);
 	return 0;
 
+err_pm_cleanup:
+	pm_runtime_dont_use_autosuspend(dev);
+	pm_runtime_disable(dev);
 err_buffer_cleanup:
 	iio_triggered_buffer_cleanup(indio_dev);
 err_free_irq:
@@ -962,9 +983,9 @@ err_poweroff:
 	bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND, true);
 	return ret;
 }
-EXPORT_SYMBOL(bmc150_magn_probe);
+EXPORT_SYMBOL_NS(bmc150_magn_probe, IIO_BMC150_MAGN);
 
-int bmc150_magn_remove(struct device *dev)
+void bmc150_magn_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct bmc150_magn_data *data = iio_priv(indio_dev);
@@ -973,7 +994,6 @@ int bmc150_magn_remove(struct device *dev)
 
 	pm_runtime_disable(dev);
 	pm_runtime_set_suspended(dev);
-	pm_runtime_put_noidle(dev);
 
 	iio_triggered_buffer_cleanup(indio_dev);
 
@@ -987,9 +1007,9 @@ int bmc150_magn_remove(struct device *dev)
 	bmc150_magn_set_power_mode(data, BMC150_MAGN_POWER_MODE_SUSPEND, true);
 	mutex_unlock(&data->mutex);
 
-	return 0;
+	regulator_bulk_disable(ARRAY_SIZE(data->regulators), data->regulators);
 }
-EXPORT_SYMBOL(bmc150_magn_remove);
+EXPORT_SYMBOL_NS(bmc150_magn_remove, IIO_BMC150_MAGN);
 
 #ifdef CONFIG_PM
 static int bmc150_magn_runtime_suspend(struct device *dev)
@@ -1057,7 +1077,7 @@ const struct dev_pm_ops bmc150_magn_pm_ops = {
 	SET_RUNTIME_PM_OPS(bmc150_magn_runtime_suspend,
 			   bmc150_magn_runtime_resume, NULL)
 };
-EXPORT_SYMBOL(bmc150_magn_pm_ops);
+EXPORT_SYMBOL_NS(bmc150_magn_pm_ops, IIO_BMC150_MAGN);
 
 MODULE_AUTHOR("Irina Tirdea <irina.tirdea@intel.com>");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/magnetometer/bmc150_magn.h b/drivers/iio/magnetometer/bmc150_magn.h
index 3b69232afd2c..98c086d10c13 100644
--- a/drivers/iio/magnetometer/bmc150_magn.h
+++ b/drivers/iio/magnetometer/bmc150_magn.h
@@ -7,6 +7,6 @@ extern const struct dev_pm_ops bmc150_magn_pm_ops;
 
 int bmc150_magn_probe(struct device *dev, struct regmap *regmap, int irq,
 		      const char *name);
-int bmc150_magn_remove(struct device *dev);
+void bmc150_magn_remove(struct device *dev);
 
 #endif /* _BMC150_MAGN_H_ */
diff --git a/drivers/iio/magnetometer/bmc150_magn_i2c.c b/drivers/iio/magnetometer/bmc150_magn_i2c.c
index fb45b63c56e4..570deaa87836 100644
--- a/drivers/iio/magnetometer/bmc150_magn_i2c.c
+++ b/drivers/iio/magnetometer/bmc150_magn_i2c.c
@@ -34,9 +34,9 @@ static int bmc150_magn_i2c_probe(struct i2c_client *client,
 	return bmc150_magn_probe(&client->dev, regmap, client->irq, name);
 }
 
-static int bmc150_magn_i2c_remove(struct i2c_client *client)
+static void bmc150_magn_i2c_remove(struct i2c_client *client)
 {
-	return bmc150_magn_remove(&client->dev);
+	bmc150_magn_remove(&client->dev);
 }
 
 static const struct acpi_device_id bmc150_magn_acpi_match[] = {
@@ -58,7 +58,8 @@ MODULE_DEVICE_TABLE(i2c, bmc150_magn_i2c_id);
 static const struct of_device_id bmc150_magn_of_match[] = {
 	{ .compatible = "bosch,bmc150_magn" },
 	{ .compatible = "bosch,bmc156_magn" },
-	{ .compatible = "bosch,bmm150_magn" },
+	{ .compatible = "bosch,bmm150_magn" }, /* deprecated compatible */
+	{ .compatible = "bosch,bmm150" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, bmc150_magn_of_match);
@@ -79,3 +80,4 @@ module_i2c_driver(bmc150_magn_driver);
 MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com");
 MODULE_LICENSE("GPL v2");
 MODULE_DESCRIPTION("BMC150 I2C magnetometer driver");
+MODULE_IMPORT_NS(IIO_BMC150_MAGN);
diff --git a/drivers/iio/magnetometer/bmc150_magn_spi.c b/drivers/iio/magnetometer/bmc150_magn_spi.c
index ed9be0490d77..882987721071 100644
--- a/drivers/iio/magnetometer/bmc150_magn_spi.c
+++ b/drivers/iio/magnetometer/bmc150_magn_spi.c
@@ -22,18 +22,16 @@ static int bmc150_magn_spi_probe(struct spi_device *spi)
 
 	regmap = devm_regmap_init_spi(spi, &bmc150_magn_regmap_config);
 	if (IS_ERR(regmap)) {
-		dev_err(&spi->dev, "Failed to register spi regmap %d\n",
-			(int)PTR_ERR(regmap));
+		dev_err(&spi->dev, "Failed to register spi regmap: %pe\n",
+			regmap);
 		return PTR_ERR(regmap);
 	}
 	return bmc150_magn_probe(&spi->dev, regmap, spi->irq, id->name);
 }
 
-static int bmc150_magn_spi_remove(struct spi_device *spi)
+static void bmc150_magn_spi_remove(struct spi_device *spi)
 {
 	bmc150_magn_remove(&spi->dev);
-
-	return 0;
 }
 
 static const struct spi_device_id bmc150_magn_spi_id[] = {
@@ -66,3 +64,4 @@ module_spi_driver(bmc150_magn_spi_driver);
 MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com");
 MODULE_DESCRIPTION("BMC150 magnetometer SPI driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_BMC150_MAGN);
diff --git a/drivers/iio/magnetometer/hid-sensor-magn-3d.c b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
index 25e60b233e08..e85a3a8eea90 100644
--- a/drivers/iio/magnetometer/hid-sensor-magn-3d.c
+++ b/drivers/iio/magnetometer/hid-sensor-magn-3d.c
@@ -6,16 +6,10 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
-#include <linux/delay.h>
+#include <linux/mod_devicetable.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum magn_3d_channel {
@@ -26,6 +20,7 @@ enum magn_3d_channel {
 	CHANNEL_SCAN_INDEX_NORTH_TRUE_TILT_COMP,
 	CHANNEL_SCAN_INDEX_NORTH_MAGN,
 	CHANNEL_SCAN_INDEX_NORTH_TRUE,
+	CHANNEL_SCAN_INDEX_TIMESTAMP,
 	MAGN_3D_CHANNEL_MAX,
 };
 
@@ -49,6 +44,7 @@ struct magn_3d_state {
 
 	struct common_attributes magn_flux_attr;
 	struct common_attributes rot_attr;
+	s64 timestamp;
 };
 
 static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = {
@@ -59,6 +55,12 @@ static const u32 magn_3d_addresses[MAGN_3D_CHANNEL_MAX] = {
 	HID_USAGE_SENSOR_ORIENT_COMP_TRUE_NORTH,
 	HID_USAGE_SENSOR_ORIENT_MAGN_NORTH,
 	HID_USAGE_SENSOR_ORIENT_TRUE_NORTH,
+	HID_USAGE_SENSOR_TIME_TIMESTAMP,
+};
+
+static const u32 magn_3d_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ORIENTATION,
+	HID_USAGE_SENSOR_ORIENT_MAGN_FLUX,
 };
 
 /* Channel definitions */
@@ -126,7 +128,8 @@ static const struct iio_chan_spec magn_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_SCALE) |
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(7)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -275,13 +278,6 @@ static const struct iio_info magn_3d_info = {
 	.write_raw = &magn_3d_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -291,8 +287,15 @@ static int magn_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct magn_3d_state *magn_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "magn_3d_proc_event\n");
-	if (atomic_read(&magn_state->magn_flux_attributes.data_ready))
-		hid_sensor_push_data(indio_dev, magn_state->iio_vals);
+	if (atomic_read(&magn_state->magn_flux_attributes.data_ready)) {
+		if (!magn_state->timestamp)
+			magn_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev,
+						   magn_state->iio_vals,
+						   magn_state->timestamp);
+		magn_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -323,6 +326,11 @@ static int magn_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 		offset = (usage_id - HID_USAGE_SENSOR_ORIENT_COMP_MAGN_NORTH)
 				+ CHANNEL_SCAN_INDEX_NORTH_MAGN_TILT_COMP;
 	break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		magn_state->timestamp =
+			hid_sensor_convert_timestamp(&magn_state->magn_flux_attributes,
+						     *(s64 *)raw_data);
+		return ret;
 	default:
 		return -EINVAL;
 	}
@@ -388,9 +396,10 @@ static int magn_3d_parse_report(struct platform_device *pdev,
 		return -ENOMEM;
 	}
 
-	st->iio_vals = devm_kcalloc(&pdev->dev, attr_count,
-				sizeof(u32),
-				GFP_KERNEL);
+	/* attr_count include timestamp channel, and the iio_vals should be aligned to 8byte */
+	st->iio_vals = devm_kcalloc(&pdev->dev,
+				    ((attr_count + 1) % 2 + (attr_count + 1) / 2) * 2,
+				    sizeof(u32), GFP_KERNEL);
 	if (!st->iio_vals) {
 		dev_err(&pdev->dev,
 			"failed to allocate space for iio values array\n");
@@ -406,11 +415,13 @@ static int magn_3d_parse_report(struct platform_device *pdev,
 			(_channels[*chan_count]).scan_index = *chan_count;
 			(_channels[*chan_count]).address = i;
 
-			/* Set magn_val_addr to iio value address */
-			st->magn_val_addr[i] = &(st->iio_vals[*chan_count]);
-			magn_3d_adjust_channel_bit_mask(_channels,
-							*chan_count,
-							st->magn[i].size);
+			if (i != CHANNEL_SCAN_INDEX_TIMESTAMP) {
+				/* Set magn_val_addr to iio value address */
+				st->magn_val_addr[i] = &st->iio_vals[*chan_count];
+				magn_3d_adjust_channel_bit_mask(_channels,
+								*chan_count,
+								st->magn[i].size);
+			}
 			(*chan_count)++;
 		}
 	}
@@ -438,27 +449,6 @@ static int magn_3d_parse_report(struct platform_device *pdev,
 			&st->rot_attr.scale_pre_decml,
 			&st->rot_attr.scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->magn_flux_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ORIENTATION,
-			&st->magn_flux_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->magn_flux_attributes.sensitivity.index,
-			st->magn_flux_attributes.sensitivity.report_id);
-	}
-	if (st->magn_flux_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_ORIENT_MAGN_FLUX,
-			&st->magn_flux_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->magn_flux_attributes.sensitivity.index,
-			st->magn_flux_attributes.sensitivity.report_id);
-	}
 	if (st->rot_attributes.sensitivity.index < 0) {
 		sensor_hub_input_get_attribute_info(hsdev,
 			HID_FEATURE_REPORT, usage_id,
@@ -497,12 +487,16 @@ static int hid_magn_3d_probe(struct platform_device *pdev)
 
 	ret = hid_sensor_parse_common_attributes(hsdev,
 				HID_USAGE_SENSOR_COMPASS_3D,
-				&magn_state->magn_flux_attributes);
+				&magn_state->magn_flux_attributes,
+				magn_3d_sensitivity_addresses,
+				ARRAY_SIZE(magn_3d_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
 	magn_state->rot_attributes = magn_state->magn_flux_attributes;
+	/* sensitivity of rot_attribute is not the same as magn_flux_attributes */
+	magn_state->rot_attributes.sensitivity.index = -1;
 
 	ret = magn_3d_parse_report(pdev, hsdev,
 				&channels, &chan_count,
@@ -514,23 +508,17 @@ static int hid_magn_3d_probe(struct platform_device *pdev)
 
 	indio_dev->channels = channels;
 	indio_dev->num_channels = chan_count;
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &magn_3d_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		return ret;
-	}
 	atomic_set(&magn_state->magn_flux_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&magn_state->magn_flux_attributes);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -554,9 +542,7 @@ static int hid_magn_3d_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&magn_state->magn_flux_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &magn_state->magn_flux_attributes);
 	return ret;
 }
 
@@ -569,8 +555,7 @@ static int hid_magn_3d_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_COMPASS_3D);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&magn_state->magn_flux_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &magn_state->magn_flux_attributes);
 
 	return 0;
 }
@@ -598,3 +583,4 @@ module_platform_driver(hid_magn_3d_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Magnetometer 3D");
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/magnetometer/hmc5843.h b/drivers/iio/magnetometer/hmc5843.h
index b0dee87a8b20..60fbb5431c88 100644
--- a/drivers/iio/magnetometer/hmc5843.h
+++ b/drivers/iio/magnetometer/hmc5843.h
@@ -33,7 +33,8 @@ enum hmc5843_ids {
  * @lock:		update and read regmap data
  * @regmap:		hardware access register maps
  * @variant:		describe chip variants
- * @buffer:		3x 16-bit channels + padding + 64-bit timestamp
+ * @scan:		buffer to pack data for passing to
+ *			iio_push_to_buffers_with_timestamp()
  */
 struct hmc5843_data {
 	struct device *dev;
@@ -41,23 +42,15 @@ struct hmc5843_data {
 	struct regmap *regmap;
 	const struct hmc5843_chip_info *variant;
 	struct iio_mount_matrix orientation;
-	__be16 buffer[8];
+	struct {
+		__be16 chans[3];
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
 			 enum hmc5843_ids id, const char *name);
-int hmc5843_common_remove(struct device *dev);
-
-int hmc5843_common_suspend(struct device *dev);
-int hmc5843_common_resume(struct device *dev);
-
-#ifdef CONFIG_PM_SLEEP
-static SIMPLE_DEV_PM_OPS(hmc5843_pm_ops,
-		hmc5843_common_suspend,
-		hmc5843_common_resume);
-#define HMC5843_PM_OPS (&hmc5843_pm_ops)
-#else
-#define HMC5843_PM_OPS NULL
-#endif
+void hmc5843_common_remove(struct device *dev);
 
+extern const struct dev_pm_ops hmc5843_pm_ops;
 #endif /* HMC5843_CORE_H */
diff --git a/drivers/iio/magnetometer/hmc5843_core.c b/drivers/iio/magnetometer/hmc5843_core.c
index c44a4292da92..c5521d61da29 100644
--- a/drivers/iio/magnetometer/hmc5843_core.c
+++ b/drivers/iio/magnetometer/hmc5843_core.c
@@ -1,6 +1,6 @@
 // SPDX-License-Identifier: GPL-2.0-or-later
 /*
- * Device driver for the the HMC5843 multi-chip module designed
+ * Device driver for the HMC5843 multi-chip module designed
  * for low field magnetic sensing.
  *
  * Copyright (C) 2010 Texas Instruments
@@ -245,8 +245,8 @@ static const struct iio_enum hmc5843_meas_conf_enum = {
 };
 
 static const struct iio_chan_spec_ext_info hmc5843_ext_info[] = {
-	IIO_ENUM("meas_conf", true, &hmc5843_meas_conf_enum),
-	IIO_ENUM_AVAILABLE("meas_conf", &hmc5843_meas_conf_enum),
+	IIO_ENUM("meas_conf", IIO_SHARED_BY_TYPE, &hmc5843_meas_conf_enum),
+	IIO_ENUM_AVAILABLE("meas_conf", IIO_SHARED_BY_TYPE, &hmc5843_meas_conf_enum),
 	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, hmc5843_get_mount_matrix),
 	{ }
 };
@@ -259,8 +259,8 @@ static const struct iio_enum hmc5983_meas_conf_enum = {
 };
 
 static const struct iio_chan_spec_ext_info hmc5983_ext_info[] = {
-	IIO_ENUM("meas_conf", true, &hmc5983_meas_conf_enum),
-	IIO_ENUM_AVAILABLE("meas_conf", &hmc5983_meas_conf_enum),
+	IIO_ENUM("meas_conf", IIO_SHARED_BY_TYPE, &hmc5983_meas_conf_enum),
+	IIO_ENUM_AVAILABLE("meas_conf", IIO_SHARED_BY_TYPE, &hmc5983_meas_conf_enum),
 	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, hmc5843_get_mount_matrix),
 	{ }
 };
@@ -446,13 +446,13 @@ static irqreturn_t hmc5843_trigger_handler(int irq, void *p)
 	}
 
 	ret = regmap_bulk_read(data->regmap, HMC5843_DATA_OUT_MSB_REGS,
-			       data->buffer, 3 * sizeof(__be16));
+			       data->scan.chans, sizeof(data->scan.chans));
 
 	mutex_unlock(&data->lock);
 	if (ret < 0)
 		goto done;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 					   iio_get_time_ns(indio_dev));
 
 done:
@@ -603,19 +603,19 @@ static const struct iio_info hmc5843_info = {
 
 static const unsigned long hmc5843_scan_masks[] = {0x7, 0};
 
-int hmc5843_common_suspend(struct device *dev)
+static int hmc5843_common_suspend(struct device *dev)
 {
 	return hmc5843_set_mode(iio_priv(dev_get_drvdata(dev)),
 				HMC5843_MODE_SLEEP);
 }
-EXPORT_SYMBOL(hmc5843_common_suspend);
 
-int hmc5843_common_resume(struct device *dev)
+static int hmc5843_common_resume(struct device *dev)
 {
 	return hmc5843_set_mode(iio_priv(dev_get_drvdata(dev)),
 		HMC5843_MODE_CONVERSION_CONTINUOUS);
 }
-EXPORT_SYMBOL(hmc5843_common_resume);
+EXPORT_NS_SIMPLE_DEV_PM_OPS(hmc5843_pm_ops, hmc5843_common_suspend,
+			    hmc5843_common_resume, IIO_HMC5843);
 
 int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
 			 enum hmc5843_ids id, const char *name)
@@ -637,12 +637,10 @@ int hmc5843_common_probe(struct device *dev, struct regmap *regmap,
 	data->variant = &hmc5843_chip_info_tbl[id];
 	mutex_init(&data->lock);
 
-	ret = iio_read_mount_matrix(dev, "mount-matrix",
-				&data->orientation);
+	ret = iio_read_mount_matrix(dev, &data->orientation);
 	if (ret)
 		return ret;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &hmc5843_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -671,9 +669,9 @@ buffer_setup_err:
 	hmc5843_set_mode(iio_priv(indio_dev), HMC5843_MODE_SLEEP);
 	return ret;
 }
-EXPORT_SYMBOL(hmc5843_common_probe);
+EXPORT_SYMBOL_NS(hmc5843_common_probe, IIO_HMC5843);
 
-int hmc5843_common_remove(struct device *dev)
+void hmc5843_common_remove(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 
@@ -682,10 +680,8 @@ int hmc5843_common_remove(struct device *dev)
 
 	/*  sleep mode to save power */
 	hmc5843_set_mode(iio_priv(indio_dev), HMC5843_MODE_SLEEP);
-
-	return 0;
 }
-EXPORT_SYMBOL(hmc5843_common_remove);
+EXPORT_SYMBOL_NS(hmc5843_common_remove, IIO_HMC5843);
 
 MODULE_AUTHOR("Shubhrajyoti Datta <shubhrajyoti@ti.com>");
 MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 core driver");
diff --git a/drivers/iio/magnetometer/hmc5843_i2c.c b/drivers/iio/magnetometer/hmc5843_i2c.c
index 67fe657fdb3e..18a13dd51296 100644
--- a/drivers/iio/magnetometer/hmc5843_i2c.c
+++ b/drivers/iio/magnetometer/hmc5843_i2c.c
@@ -65,9 +65,9 @@ static int hmc5843_i2c_probe(struct i2c_client *cli,
 			id->driver_data, id->name);
 }
 
-static int hmc5843_i2c_remove(struct i2c_client *client)
+static void hmc5843_i2c_remove(struct i2c_client *client)
 {
-	return hmc5843_common_remove(&client->dev);
+	hmc5843_common_remove(&client->dev);
 }
 
 static const struct i2c_device_id hmc5843_id[] = {
@@ -91,7 +91,7 @@ MODULE_DEVICE_TABLE(of, hmc5843_of_match);
 static struct i2c_driver hmc5843_driver = {
 	.driver = {
 		.name	= "hmc5843",
-		.pm	= HMC5843_PM_OPS,
+		.pm	= pm_sleep_ptr(&hmc5843_pm_ops),
 		.of_match_table = hmc5843_of_match,
 	},
 	.id_table	= hmc5843_id,
@@ -103,3 +103,4 @@ module_i2c_driver(hmc5843_driver);
 MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
 MODULE_DESCRIPTION("HMC5843/5883/5883L/5983 i2c driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HMC5843);
diff --git a/drivers/iio/magnetometer/hmc5843_spi.c b/drivers/iio/magnetometer/hmc5843_spi.c
index d827554c346e..c42d2e2a6a6c 100644
--- a/drivers/iio/magnetometer/hmc5843_spi.c
+++ b/drivers/iio/magnetometer/hmc5843_spi.c
@@ -74,9 +74,9 @@ static int hmc5843_spi_probe(struct spi_device *spi)
 			id->driver_data, id->name);
 }
 
-static int hmc5843_spi_remove(struct spi_device *spi)
+static void hmc5843_spi_remove(struct spi_device *spi)
 {
-	return hmc5843_common_remove(&spi->dev);
+	hmc5843_common_remove(&spi->dev);
 }
 
 static const struct spi_device_id hmc5843_id[] = {
@@ -86,13 +86,13 @@ static const struct spi_device_id hmc5843_id[] = {
 MODULE_DEVICE_TABLE(spi, hmc5843_id);
 
 static struct spi_driver hmc5843_driver = {
-		.driver = {
-				.name = "hmc5843",
-				.pm = HMC5843_PM_OPS,
-		},
-		.id_table = hmc5843_id,
-		.probe = hmc5843_spi_probe,
-		.remove = hmc5843_spi_remove,
+	.driver = {
+		.name = "hmc5843",
+		.pm = pm_sleep_ptr(&hmc5843_pm_ops),
+	},
+	.id_table = hmc5843_id,
+	.probe = hmc5843_spi_probe,
+	.remove = hmc5843_spi_remove,
 };
 
 module_spi_driver(hmc5843_driver);
@@ -100,3 +100,4 @@ module_spi_driver(hmc5843_driver);
 MODULE_AUTHOR("Josef Gajdusek <atx@atx.name>");
 MODULE_DESCRIPTION("HMC5983 SPI driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HMC5843);
diff --git a/drivers/iio/magnetometer/mag3110.c b/drivers/iio/magnetometer/mag3110.c
index fb16cfdd6fa6..b870ad803862 100644
--- a/drivers/iio/magnetometer/mag3110.c
+++ b/drivers/iio/magnetometer/mag3110.c
@@ -56,6 +56,12 @@ struct mag3110_data {
 	int sleep_val;
 	struct regulator *vdd_reg;
 	struct regulator *vddio_reg;
+	/* Ensure natural alignment of timestamp */
+	struct {
+		__be16 channels[3];
+		u8 temperature;
+		s64 ts __aligned(8);
+	} scan;
 };
 
 static int mag3110_request(struct mag3110_data *data)
@@ -285,7 +291,8 @@ static int mag3110_read_raw(struct iio_dev *indio_dev,
 			if (ret < 0)
 				goto release;
 			*val = sign_extend32(
-				be16_to_cpu(buffer[chan->scan_index]), 15);
+				be16_to_cpu(buffer[chan->scan_index]),
+					    chan->scan_type.realbits - 1);
 			ret = IIO_VAL_INT;
 			break;
 		case IIO_TEMP: /* in 1 C / LSB */
@@ -300,7 +307,8 @@ static int mag3110_read_raw(struct iio_dev *indio_dev,
 			mutex_unlock(&data->lock);
 			if (ret < 0)
 				goto release;
-			*val = sign_extend32(ret, 7);
+			*val = sign_extend32(ret,
+					     chan->scan_type.realbits - 1);
 			ret = IIO_VAL_INT;
 			break;
 		default:
@@ -387,10 +395,9 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct mag3110_data *data = iio_priv(indio_dev);
-	u8 buffer[16]; /* 3 16-bit channels + 1 byte temp + padding + ts */
 	int ret;
 
-	ret = mag3110_read(data, (__be16 *) buffer);
+	ret = mag3110_read(data, data->scan.channels);
 	if (ret < 0)
 		goto done;
 
@@ -399,10 +406,10 @@ static irqreturn_t mag3110_trigger_handler(int irq, void *p)
 			MAG3110_DIE_TEMP);
 		if (ret < 0)
 			goto done;
-		buffer[6] = ret;
+		data->scan.temperature = ret;
 	}
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer,
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 		iio_get_time_ns(indio_dev));
 
 done:
@@ -476,22 +483,14 @@ static int mag3110_probe(struct i2c_client *client,
 	data = iio_priv(indio_dev);
 
 	data->vdd_reg = devm_regulator_get(&client->dev, "vdd");
-	if (IS_ERR(data->vdd_reg)) {
-		if (PTR_ERR(data->vdd_reg) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-
-		dev_err(&client->dev, "failed to get VDD regulator!\n");
-		return PTR_ERR(data->vdd_reg);
-	}
+	if (IS_ERR(data->vdd_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vdd_reg),
+				     "failed to get VDD regulator!\n");
 
 	data->vddio_reg = devm_regulator_get(&client->dev, "vddio");
-	if (IS_ERR(data->vddio_reg)) {
-		if (PTR_ERR(data->vddio_reg) == -EPROBE_DEFER)
-			return -EPROBE_DEFER;
-
-		dev_err(&client->dev, "failed to get VDDIO regulator!\n");
-		return PTR_ERR(data->vddio_reg);
-	}
+	if (IS_ERR(data->vddio_reg))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vddio_reg),
+				     "failed to get VDDIO regulator!\n");
 
 	ret = regulator_enable(data->vdd_reg);
 	if (ret) {
@@ -519,7 +518,6 @@ static int mag3110_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	indio_dev->info = &mag3110_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mag3110_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mag3110_channels);
@@ -561,7 +559,7 @@ disable_regulator_vdd:
 	return ret;
 }
 
-static int mag3110_remove(struct i2c_client *client)
+static void mag3110_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mag3110_data *data = iio_priv(indio_dev);
@@ -571,11 +569,8 @@ static int mag3110_remove(struct i2c_client *client)
 	mag3110_standby(iio_priv(indio_dev));
 	regulator_disable(data->vddio_reg);
 	regulator_disable(data->vdd_reg);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int mag3110_suspend(struct device *dev)
 {
 	struct mag3110_data *data = iio_priv(i2c_get_clientdata(
@@ -625,11 +620,8 @@ static int mag3110_resume(struct device *dev)
 		data->ctrl_reg1);
 }
 
-static SIMPLE_DEV_PM_OPS(mag3110_pm_ops, mag3110_suspend, mag3110_resume);
-#define MAG3110_PM_OPS (&mag3110_pm_ops)
-#else
-#define MAG3110_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(mag3110_pm_ops, mag3110_suspend,
+				mag3110_resume);
 
 static const struct i2c_device_id mag3110_id[] = {
 	{ "mag3110", 0 },
@@ -647,7 +639,7 @@ static struct i2c_driver mag3110_driver = {
 	.driver = {
 		.name	= "mag3110",
 		.of_match_table = mag3110_of_match,
-		.pm	= MAG3110_PM_OPS,
+		.pm	= pm_sleep_ptr(&mag3110_pm_ops),
 	},
 	.probe = mag3110_probe,
 	.remove = mag3110_remove,
diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c
index 425cdd07b4e5..186edfcda0b7 100644
--- a/drivers/iio/magnetometer/mmc35240.c
+++ b/drivers/iio/magnetometer/mmc35240.c
@@ -239,7 +239,7 @@ static int mmc35240_init(struct mmc35240_data *data)
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, MMC35240_OTP_START_ADDR,
-			       (u8 *)otp_data, sizeof(otp_data));
+			       otp_data, sizeof(otp_data));
 	if (ret < 0)
 		return ret;
 
@@ -295,13 +295,13 @@ static int mmc35240_read_measurement(struct mmc35240_data *data, __le16 buf[3])
 	if (ret < 0)
 		return ret;
 
-	return regmap_bulk_read(data->regmap, MMC35240_REG_XOUT_L, (u8 *)buf,
+	return regmap_bulk_read(data->regmap, MMC35240_REG_XOUT_L, buf,
 				3 * sizeof(__le16));
 }
 
 /**
  * mmc35240_raw_to_mgauss - convert raw readings to milli gauss. Also apply
-			    compensation for output value.
+ *			    compensation for output value.
  *
  * @data: device private data
  * @index: axis index for which we want the conversion
@@ -459,7 +459,7 @@ static bool mmc35240_is_volatile_reg(struct device *dev, unsigned int reg)
 	}
 }
 
-static struct reg_default mmc35240_reg_defaults[] = {
+static const struct reg_default mmc35240_reg_defaults[] = {
 	{ MMC35240_REG_CTRL0,  0x00 },
 	{ MMC35240_REG_CTRL1,  0x00 },
 };
@@ -507,7 +507,6 @@ static int mmc35240_probe(struct i2c_client *client,
 
 	mutex_init(&data->mutex);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &mmc35240_info;
 	indio_dev->name = MMC35240_DRV_NAME;
 	indio_dev->channels = mmc35240_channels;
@@ -522,7 +521,6 @@ static int mmc35240_probe(struct i2c_client *client,
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int mmc35240_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -549,11 +547,9 @@ static int mmc35240_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-static const struct dev_pm_ops mmc35240_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mmc35240_suspend, mmc35240_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(mmc35240_pm_ops, mmc35240_suspend,
+				mmc35240_resume);
 
 static const struct of_device_id mmc35240_of_match[] = {
 	{ .compatible = "memsic,mmc35240", },
@@ -577,7 +573,7 @@ static struct i2c_driver mmc35240_driver = {
 	.driver = {
 		.name = MMC35240_DRV_NAME,
 		.of_match_table = mmc35240_of_match,
-		.pm = &mmc35240_pm_ops,
+		.pm = pm_sleep_ptr(&mmc35240_pm_ops),
 		.acpi_match_table = ACPI_PTR(mmc35240_acpi_match),
 	},
 	.probe		= mmc35240_probe,
diff --git a/drivers/iio/magnetometer/rm3100-core.c b/drivers/iio/magnetometer/rm3100-core.c
index 7c20918d8108..69938204456f 100644
--- a/drivers/iio/magnetometer/rm3100-core.c
+++ b/drivers/iio/magnetometer/rm3100-core.c
@@ -22,6 +22,8 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 
+#include <asm/unaligned.h>
+
 #include "rm3100.h"
 
 /* Cycle Count Registers. */
@@ -76,7 +78,8 @@ struct rm3100_data {
 	bool use_interrupt;
 	int conversion_time;
 	int scale;
-	u8 buffer[RM3100_SCAN_BYTES];
+	/* Ensure naturally aligned timestamp */
+	u8 buffer[RM3100_SCAN_BYTES] __aligned(8);
 	struct iio_trigger *drdy_trig;
 
 	/*
@@ -97,7 +100,7 @@ const struct regmap_access_table rm3100_readable_table = {
 	.yes_ranges = rm3100_readable_ranges,
 	.n_yes_ranges = ARRAY_SIZE(rm3100_readable_ranges),
 };
-EXPORT_SYMBOL_GPL(rm3100_readable_table);
+EXPORT_SYMBOL_NS_GPL(rm3100_readable_table, IIO_RM3100);
 
 static const struct regmap_range rm3100_writable_ranges[] = {
 	regmap_reg_range(RM3100_W_REG_START, RM3100_W_REG_END),
@@ -107,7 +110,7 @@ const struct regmap_access_table rm3100_writable_table = {
 	.yes_ranges = rm3100_writable_ranges,
 	.n_yes_ranges = ARRAY_SIZE(rm3100_writable_ranges),
 };
-EXPORT_SYMBOL_GPL(rm3100_writable_table);
+EXPORT_SYMBOL_NS_GPL(rm3100_writable_table, IIO_RM3100);
 
 static const struct regmap_range rm3100_volatile_ranges[] = {
 	regmap_reg_range(RM3100_V_REG_START, RM3100_V_REG_END),
@@ -117,7 +120,7 @@ const struct regmap_access_table rm3100_volatile_table = {
 	.yes_ranges = rm3100_volatile_ranges,
 	.n_yes_ranges = ARRAY_SIZE(rm3100_volatile_ranges),
 };
-EXPORT_SYMBOL_GPL(rm3100_volatile_table);
+EXPORT_SYMBOL_NS_GPL(rm3100_volatile_table, IIO_RM3100);
 
 static irqreturn_t rm3100_thread_fn(int irq, void *d)
 {
@@ -138,18 +141,10 @@ static irqreturn_t rm3100_irq_handler(int irq, void *d)
 	struct iio_dev *indio_dev = d;
 	struct rm3100_data *data = iio_priv(indio_dev);
 
-	switch (indio_dev->currentmode) {
-	case INDIO_DIRECT_MODE:
+	if (!iio_buffer_enabled(indio_dev))
 		complete(&data->measuring_done);
-		break;
-	case INDIO_BUFFER_TRIGGERED:
+	else
 		iio_trigger_poll(data->drdy_trig);
-		break;
-	default:
-		dev_err(indio_dev->dev.parent,
-			"device mode out of control, current mode: %d",
-			indio_dev->currentmode);
-	}
 
 	return IRQ_WAKE_THREAD;
 }
@@ -223,8 +218,7 @@ static int rm3100_read_mag(struct rm3100_data *data, int idx, int *val)
 		goto unlock_return;
 	mutex_unlock(&data->lock);
 
-	*val = sign_extend32((buffer[0] << 16) | (buffer[1] << 8) | buffer[2],
-			     23);
+	*val = sign_extend32(get_unaligned_be24(&buffer[0]), 23);
 
 	return IIO_VAL_INT;
 
@@ -375,7 +369,7 @@ static int rm3100_set_samp_freq(struct iio_dev *indio_dev, int val, int val2)
 			goto unlock_return;
 	}
 
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED) {
+	if (iio_buffer_enabled(indio_dev)) {
 		/* Writing TMRC registers requires CMM reset. */
 		ret = regmap_write(regmap, RM3100_REG_CMM, 0);
 		if (ret < 0)
@@ -462,8 +456,6 @@ static int rm3100_buffer_postdisable(struct iio_dev *indio_dev)
 
 static const struct iio_buffer_setup_ops rm3100_buffer_ops = {
 	.preenable = rm3100_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
 	.postdisable = rm3100_buffer_postdisable,
 };
 
@@ -548,13 +540,11 @@ int rm3100_common_probe(struct device *dev, struct regmap *regmap, int irq)
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = "rm3100";
 	indio_dev->info = &rm3100_info;
 	indio_dev->channels = rm3100_channels;
 	indio_dev->num_channels = ARRAY_SIZE(rm3100_channels);
-	indio_dev->modes = INDIO_DIRECT_MODE | INDIO_BUFFER_TRIGGERED;
-	indio_dev->currentmode = INDIO_DIRECT_MODE;
+	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	if (!irq)
 		data->use_interrupt = false;
@@ -577,11 +567,10 @@ int rm3100_common_probe(struct device *dev, struct regmap *regmap, int irq)
 
 		data->drdy_trig = devm_iio_trigger_alloc(dev, "%s-drdy%d",
 							 indio_dev->name,
-							 indio_dev->id);
+							 iio_device_id(indio_dev));
 		if (!data->drdy_trig)
 			return -ENOMEM;
 
-		data->drdy_trig->dev.parent = dev;
 		ret = devm_iio_trigger_register(dev, data->drdy_trig);
 		if (ret < 0)
 			return ret;
@@ -609,7 +598,7 @@ int rm3100_common_probe(struct device *dev, struct regmap *regmap, int irq)
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(rm3100_common_probe);
+EXPORT_SYMBOL_NS_GPL(rm3100_common_probe, IIO_RM3100);
 
 MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>");
 MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver");
diff --git a/drivers/iio/magnetometer/rm3100-i2c.c b/drivers/iio/magnetometer/rm3100-i2c.c
index 1ac622c6d6c9..ba669ab7113d 100644
--- a/drivers/iio/magnetometer/rm3100-i2c.c
+++ b/drivers/iio/magnetometer/rm3100-i2c.c
@@ -52,3 +52,4 @@ module_i2c_driver(rm3100_driver);
 MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>");
 MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_RM3100);
diff --git a/drivers/iio/magnetometer/rm3100-spi.c b/drivers/iio/magnetometer/rm3100-spi.c
index 65d5eb9e4f5e..76dc9b66cd3c 100644
--- a/drivers/iio/magnetometer/rm3100-spi.c
+++ b/drivers/iio/magnetometer/rm3100-spi.c
@@ -62,3 +62,4 @@ module_spi_driver(rm3100_driver);
 MODULE_AUTHOR("Song Qiang <songqiang1304521@gmail.com>");
 MODULE_DESCRIPTION("PNI RM3100 3-axis magnetometer spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_RM3100);
diff --git a/drivers/iio/magnetometer/st_magn.h b/drivers/iio/magnetometer/st_magn.h
index 204b285725c8..785b7f7b8b06 100644
--- a/drivers/iio/magnetometer/st_magn.h
+++ b/drivers/iio/magnetometer/st_magn.h
@@ -21,32 +21,17 @@
 #define LSM303AGR_MAGN_DEV_NAME		"lsm303agr_magn"
 #define LIS2MDL_MAGN_DEV_NAME		"lis2mdl"
 #define LSM9DS1_MAGN_DEV_NAME		"lsm9ds1_magn"
-
-const struct st_sensor_settings *st_magn_get_settings(const char *name);
-int st_magn_common_probe(struct iio_dev *indio_dev);
-void st_magn_common_remove(struct iio_dev *indio_dev);
+#define IIS2MDC_MAGN_DEV_NAME		"iis2mdc"
 
 #ifdef CONFIG_IIO_BUFFER
 int st_magn_allocate_ring(struct iio_dev *indio_dev);
-void st_magn_deallocate_ring(struct iio_dev *indio_dev);
 int st_magn_trig_set_state(struct iio_trigger *trig, bool state);
 #define ST_MAGN_TRIGGER_SET_STATE (&st_magn_trig_set_state)
 #else /* CONFIG_IIO_BUFFER */
-static inline int st_magn_probe_trigger(struct iio_dev *indio_dev, int irq)
-{
-	return 0;
-}
-static inline void st_magn_remove_trigger(struct iio_dev *indio_dev, int irq)
-{
-	return;
-}
 static inline int st_magn_allocate_ring(struct iio_dev *indio_dev)
 {
 	return 0;
 }
-static inline void st_magn_deallocate_ring(struct iio_dev *indio_dev)
-{
-}
 #define ST_MAGN_TRIGGER_SET_STATE NULL
 #endif /* CONFIG_IIO_BUFFER */
 
diff --git a/drivers/iio/magnetometer/st_magn_buffer.c b/drivers/iio/magnetometer/st_magn_buffer.c
index bb425c167a96..79987f42e8d9 100644
--- a/drivers/iio/magnetometer/st_magn_buffer.c
+++ b/drivers/iio/magnetometer/st_magn_buffer.c
@@ -7,16 +7,10 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
-#include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/trigger.h>
 #include <linux/iio/triggered_buffer.h>
 
 #include <linux/iio/common/st_sensors.h>
@@ -31,34 +25,12 @@ int st_magn_trig_set_state(struct iio_trigger *trig, bool state)
 
 static int st_magn_buffer_postenable(struct iio_dev *indio_dev)
 {
-	int err;
-
-	err = iio_triggered_buffer_postenable(indio_dev);
-	if (err < 0)
-		return err;
-
-	err = st_sensors_set_enable(indio_dev, true);
-	if (err < 0)
-		goto st_magn_buffer_predisable;
-
-	return 0;
-
-st_magn_buffer_predisable:
-	iio_triggered_buffer_predisable(indio_dev);
-	return err;
+	return st_sensors_set_enable(indio_dev, true);
 }
 
 static int st_magn_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int err, err2;
-
-	err = st_sensors_set_enable(indio_dev, false);
-
-	err2 = iio_triggered_buffer_predisable(indio_dev);
-	if (!err)
-		err = err2;
-
-	return err;
+	return st_sensors_set_enable(indio_dev, false);
 }
 
 static const struct iio_buffer_setup_ops st_magn_buffer_setup_ops = {
@@ -68,15 +40,7 @@ static const struct iio_buffer_setup_ops st_magn_buffer_setup_ops = {
 
 int st_magn_allocate_ring(struct iio_dev *indio_dev)
 {
-	return iio_triggered_buffer_setup(indio_dev, NULL,
-		&st_sensors_trigger_handler, &st_magn_buffer_setup_ops);
-}
-
-void st_magn_deallocate_ring(struct iio_dev *indio_dev)
-{
-	iio_triggered_buffer_cleanup(indio_dev);
+	return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
+		NULL, &st_sensors_trigger_handler, &st_magn_buffer_setup_ops);
 }
 
-MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics magnetometers buffer");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/magnetometer/st_magn_core.c b/drivers/iio/magnetometer/st_magn_core.c
index e68184a93a6d..e2fd233b3626 100644
--- a/drivers/iio/magnetometer/st_magn_core.c
+++ b/drivers/iio/magnetometer/st_magn_core.c
@@ -9,16 +9,11 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/sysfs.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
+#include <linux/iio/trigger.h>
 
 #include <linux/iio/common/st_sensors.h>
 #include "st_magn.h"
@@ -33,6 +28,7 @@
 /* FULLSCALE */
 #define ST_MAGN_FS_AVL_1300MG			1300
 #define ST_MAGN_FS_AVL_1900MG			1900
+#define ST_MAGN_FS_AVL_2000MG			2000
 #define ST_MAGN_FS_AVL_2500MG			2500
 #define ST_MAGN_FS_AVL_4000MG			4000
 #define ST_MAGN_FS_AVL_4700MG			4700
@@ -53,51 +49,95 @@
 #define ST_MAGN_3_OUT_Y_L_ADDR			0x6a
 #define ST_MAGN_3_OUT_Z_L_ADDR			0x6c
 
+/* Special L addresses for sensor 4 */
+#define ST_MAGN_4_OUT_X_L_ADDR			0x08
+#define ST_MAGN_4_OUT_Y_L_ADDR			0x0a
+#define ST_MAGN_4_OUT_Z_L_ADDR			0x0c
+
+static const struct iio_mount_matrix *
+st_magn_get_mount_matrix(const struct iio_dev *indio_dev,
+			 const struct iio_chan_spec *chan)
+{
+	struct st_sensor_data *mdata = iio_priv(indio_dev);
+
+	return &mdata->mount_matrix;
+}
+
+static const struct iio_chan_spec_ext_info st_magn_mount_matrix_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_magn_get_mount_matrix),
+	{ }
+};
+
 static const struct iio_chan_spec st_magn_16bit_channels[] = {
-	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_BE, 16, 16,
-			ST_MAGN_DEFAULT_OUT_X_H_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
+			ST_MAGN_DEFAULT_OUT_X_H_ADDR,
+			st_magn_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_BE, 16, 16,
-			ST_MAGN_DEFAULT_OUT_Y_H_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
+			ST_MAGN_DEFAULT_OUT_Y_H_ADDR,
+			st_magn_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_BE, 16, 16,
-			ST_MAGN_DEFAULT_OUT_Z_H_ADDR),
+			ST_MAGN_DEFAULT_OUT_Z_H_ADDR,
+			st_magn_mount_matrix_ext_info),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
 static const struct iio_chan_spec st_magn_2_16bit_channels[] = {
-	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
-			ST_MAGN_2_OUT_X_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
+			ST_MAGN_2_OUT_X_L_ADDR,
+			st_magn_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
-			ST_MAGN_2_OUT_Y_L_ADDR),
-	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
+			ST_MAGN_2_OUT_Y_L_ADDR,
+			st_magn_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
-			ST_MAGN_2_OUT_Z_L_ADDR),
+			ST_MAGN_2_OUT_Z_L_ADDR,
+			st_magn_mount_matrix_ext_info),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
 static const struct iio_chan_spec st_magn_3_16bit_channels[] = {
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
+			ST_MAGN_3_OUT_X_L_ADDR,
+			st_magn_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
+			ST_MAGN_3_OUT_Y_L_ADDR,
+			st_magn_mount_matrix_ext_info),
+	ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
+			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
+			ST_MAGN_3_OUT_Z_L_ADDR,
+			st_magn_mount_matrix_ext_info),
+	IIO_CHAN_SOFT_TIMESTAMP(3)
+};
+
+static const struct iio_chan_spec st_magn_4_16bit_channels[] = {
 	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
-			ST_MAGN_3_OUT_X_L_ADDR),
+			ST_MAGN_4_OUT_X_L_ADDR),
 	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
-			ST_MAGN_3_OUT_Y_L_ADDR),
+			ST_MAGN_4_OUT_Y_L_ADDR),
 	ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
 			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
 			ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
-			ST_MAGN_3_OUT_Z_L_ADDR),
+			ST_MAGN_4_OUT_Z_L_ADDR),
 	IIO_CHAN_SOFT_TIMESTAMP(3)
 };
 
@@ -337,6 +377,7 @@ static const struct st_sensor_settings st_magn_sensors_settings[] = {
 		.sensors_supported = {
 			[0] = LSM303AGR_MAGN_DEV_NAME,
 			[1] = LIS2MDL_MAGN_DEV_NAME,
+			[2] = IIS2MDC_MAGN_DEV_NAME,
 		},
 		.ch = (struct iio_chan_spec *)st_magn_3_16bit_channels,
 		.odr = {
@@ -380,6 +421,87 @@ static const struct st_sensor_settings st_magn_sensors_settings[] = {
 		.multi_read_bit = false,
 		.bootime = 2,
 	},
+	{
+		.wai = 0x49,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = LSM9DS0_IMU_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_magn_4_16bit_channels,
+		.odr = {
+			.addr = 0x24,
+			.mask = GENMASK(4, 2),
+			.odr_avl = {
+				{ 3, 0x00, },
+				{ 6, 0x01, },
+				{ 12, 0x02, },
+				{ 25, 0x03, },
+				{ 50, 0x04, },
+				{ 100, 0x05, },
+			},
+		},
+		.pw = {
+			.addr = 0x26,
+			.mask = GENMASK(1, 0),
+			.value_on = 0x00,
+			.value_off = 0x03,
+		},
+		.fs = {
+			.addr = 0x25,
+			.mask = GENMASK(6, 5),
+			.fs_avl = {
+				[0] = {
+					.num = ST_MAGN_FS_AVL_2000MG,
+					.value = 0x00,
+					.gain = 73,
+				},
+				[1] = {
+					.num = ST_MAGN_FS_AVL_4000MG,
+					.value = 0x01,
+					.gain = 146,
+				},
+				[2] = {
+					.num = ST_MAGN_FS_AVL_8000MG,
+					.value = 0x02,
+					.gain = 292,
+				},
+				[3] = {
+					.num = ST_MAGN_FS_AVL_12000MG,
+					.value = 0x03,
+					.gain = 438,
+				},
+			},
+		},
+		.bdu = {
+			.addr = 0x20,
+			.mask = BIT(3),
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x22,
+				.mask = BIT(1),
+			},
+			.int2 = {
+				.addr = 0x23,
+				.mask = BIT(2),
+			},
+			.stat_drdy = {
+				.addr = 0x07,
+				.mask = GENMASK(2, 0),
+			},
+		},
+		.sim = {
+			.addr = 0x21,
+			.value = BIT(0),
+		},
+		.multi_read_bit = true,
+		.bootime = 2,
+	},
+};
+
+/* Default magn DRDY is available on INT2 pin */
+static const struct st_sensors_platform_data default_magn_pdata = {
+	.drdy_int_pin = 2,
 };
 
 static int st_magn_read_raw(struct iio_dev *indio_dev,
@@ -418,24 +540,17 @@ read_error:
 static int st_magn_write_raw(struct iio_dev *indio_dev,
 		struct iio_chan_spec const *chan, int val, int val2, long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SCALE:
-		err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
-		break;
+		return st_sensors_set_fullscale_by_gain(indio_dev, val2);
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
+
+		return st_sensors_set_odr(indio_dev, val);
 	default:
-		err = -EINVAL;
+		return -EINVAL;
 	}
-
-	return err;
 }
 
 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
@@ -484,82 +599,56 @@ const struct st_sensor_settings *st_magn_get_settings(const char *name)
 
 	return &st_magn_sensors_settings[index];
 }
-EXPORT_SYMBOL(st_magn_get_settings);
+EXPORT_SYMBOL_NS(st_magn_get_settings, IIO_ST_SENSORS);
 
 int st_magn_common_probe(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *mdata = iio_priv(indio_dev);
+	struct device *parent = indio_dev->dev.parent;
+	struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
 	int err;
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &magn_info;
 
-	err = st_sensors_power_enable(indio_dev);
-	if (err)
-		return err;
-
 	err = st_sensors_verify_id(indio_dev);
 	if (err < 0)
-		goto st_magn_power_off;
+		return err;
 
 	mdata->num_data_channels = ST_MAGN_NUMBER_DATA_CHANNELS;
 	indio_dev->channels = mdata->sensor_settings->ch;
 	indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
 
-	mdata->current_fullscale = (struct st_sensor_fullscale_avl *)
-					&mdata->sensor_settings->fs.fs_avl[0];
+	err = iio_read_mount_matrix(parent, &mdata->mount_matrix);
+	if (err)
+		return err;
+
+	mdata->current_fullscale = &mdata->sensor_settings->fs.fs_avl[0];
 	mdata->odr = mdata->sensor_settings->odr.odr_avl[0].hz;
 
-	err = st_sensors_init_sensor(indio_dev, NULL);
+	if (!pdata)
+		pdata = (struct st_sensors_platform_data *)&default_magn_pdata;
+
+	err = st_sensors_init_sensor(indio_dev, pdata);
 	if (err < 0)
-		goto st_magn_power_off;
+		return err;
 
 	err = st_magn_allocate_ring(indio_dev);
 	if (err < 0)
-		goto st_magn_power_off;
+		return err;
 
 	if (mdata->irq > 0) {
 		err = st_sensors_allocate_trigger(indio_dev,
 						ST_MAGN_TRIGGER_OPS);
 		if (err < 0)
-			goto st_magn_probe_trigger_error;
+			return err;
 	}
 
-	err = iio_device_register(indio_dev);
-	if (err)
-		goto st_magn_device_register_error;
-
-	dev_info(&indio_dev->dev, "registered magnetometer %s\n",
-		 indio_dev->name);
-
-	return 0;
-
-st_magn_device_register_error:
-	if (mdata->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-st_magn_probe_trigger_error:
-	st_magn_deallocate_ring(indio_dev);
-st_magn_power_off:
-	st_sensors_power_disable(indio_dev);
-
-	return err;
-}
-EXPORT_SYMBOL(st_magn_common_probe);
-
-void st_magn_common_remove(struct iio_dev *indio_dev)
-{
-	struct st_sensor_data *mdata = iio_priv(indio_dev);
-
-	st_sensors_power_disable(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (mdata->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-
-	st_magn_deallocate_ring(indio_dev);
+	return devm_iio_device_register(parent, indio_dev);
 }
-EXPORT_SYMBOL(st_magn_common_remove);
+EXPORT_SYMBOL_NS(st_magn_common_probe, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics magnetometers driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/magnetometer/st_magn_i2c.c b/drivers/iio/magnetometer/st_magn_i2c.c
index c6bb4ce77594..c5d8c303db4e 100644
--- a/drivers/iio/magnetometer/st_magn_i2c.c
+++ b/drivers/iio/magnetometer/st_magn_i2c.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 
@@ -46,6 +46,10 @@ static const struct of_device_id st_magn_of_match[] = {
 		.compatible = "st,lsm9ds1-magn",
 		.data = LSM9DS1_MAGN_DEV_NAME,
 	},
+	{
+		.compatible = "st,iis2mdc",
+		.data = IIS2MDC_MAGN_DEV_NAME,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_magn_of_match);
@@ -78,19 +82,11 @@ static int st_magn_i2c_probe(struct i2c_client *client,
 	if (err < 0)
 		return err;
 
-	err = st_magn_common_probe(indio_dev);
-	if (err < 0)
+	err = st_sensors_power_enable(indio_dev);
+	if (err)
 		return err;
 
-	return 0;
-}
-
-static int st_magn_i2c_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	st_magn_common_remove(indio_dev);
-
-	return 0;
+	return st_magn_common_probe(indio_dev);
 }
 
 static const struct i2c_device_id st_magn_id_table[] = {
@@ -101,6 +97,7 @@ static const struct i2c_device_id st_magn_id_table[] = {
 	{ LSM303AGR_MAGN_DEV_NAME },
 	{ LIS2MDL_MAGN_DEV_NAME },
 	{ LSM9DS1_MAGN_DEV_NAME },
+	{ IIS2MDC_MAGN_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_magn_id_table);
@@ -111,7 +108,6 @@ static struct i2c_driver st_magn_driver = {
 		.of_match_table = st_magn_of_match,
 	},
 	.probe = st_magn_i2c_probe,
-	.remove = st_magn_i2c_remove,
 	.id_table = st_magn_id_table,
 };
 module_i2c_driver(st_magn_driver);
@@ -119,3 +115,4 @@ module_i2c_driver(st_magn_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics magnetometers i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/magnetometer/st_magn_spi.c b/drivers/iio/magnetometer/st_magn_spi.c
index 3d08d74c367d..6ddc4318564a 100644
--- a/drivers/iio/magnetometer/st_magn_spi.c
+++ b/drivers/iio/magnetometer/st_magn_spi.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 
@@ -41,6 +41,10 @@ static const struct of_device_id st_magn_of_match[] = {
 		.compatible = "st,lsm9ds1-magn",
 		.data = LSM9DS1_MAGN_DEV_NAME,
 	},
+	{
+		.compatible = "st,iis2mdc",
+		.data = IIS2MDC_MAGN_DEV_NAME,
+	},
 	{}
 };
 MODULE_DEVICE_TABLE(of, st_magn_of_match);
@@ -72,19 +76,11 @@ static int st_magn_spi_probe(struct spi_device *spi)
 	if (err < 0)
 		return err;
 
-	err = st_magn_common_probe(indio_dev);
-	if (err < 0)
+	err = st_sensors_power_enable(indio_dev);
+	if (err)
 		return err;
 
-	return 0;
-}
-
-static int st_magn_spi_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = spi_get_drvdata(spi);
-	st_magn_common_remove(indio_dev);
-
-	return 0;
+	return st_magn_common_probe(indio_dev);
 }
 
 static const struct spi_device_id st_magn_id_table[] = {
@@ -92,6 +88,7 @@ static const struct spi_device_id st_magn_id_table[] = {
 	{ LSM303AGR_MAGN_DEV_NAME },
 	{ LIS2MDL_MAGN_DEV_NAME },
 	{ LSM9DS1_MAGN_DEV_NAME },
+	{ IIS2MDC_MAGN_DEV_NAME },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_magn_id_table);
@@ -102,7 +99,6 @@ static struct spi_driver st_magn_driver = {
 		.of_match_table = st_magn_of_match,
 	},
 	.probe = st_magn_spi_probe,
-	.remove = st_magn_spi_remove,
 	.id_table = st_magn_id_table,
 };
 module_spi_driver(st_magn_driver);
@@ -110,3 +106,4 @@ module_spi_driver(st_magn_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics magnetometers spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/magnetometer/yamaha-yas530.c b/drivers/iio/magnetometer/yamaha-yas530.c
new file mode 100644
index 000000000000..801c760feb4d
--- /dev/null
+++ b/drivers/iio/magnetometer/yamaha-yas530.c
@@ -0,0 +1,1616 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Driver for the Yamaha YAS magnetic sensors, often used in Samsung
+ * mobile phones. While all are not yet handled because of lacking
+ * hardware, expand this driver to handle the different variants:
+ *
+ * YAS530 MS-3E (2011 Samsung Galaxy S Advance)
+ * YAS532 MS-3R (2011 Samsung Galaxy S4)
+ * YAS533 MS-3F (Vivo 1633, 1707, V3, Y21L)
+ * (YAS534 is a magnetic switch, not handled)
+ * YAS535 MS-6C
+ * YAS536 MS-3W
+ * YAS537 MS-3T (2015 Samsung Galaxy S6, Note 5, Galaxy S7)
+ * YAS539 MS-3S (2018 Samsung Galaxy A7 SM-A750FN)
+ *
+ * Code functions found in the MPU3050 YAS530 and YAS532 drivers
+ * named "inv_compass" in the Tegra Android kernel tree.
+ * Copyright (C) 2012 InvenSense Corporation
+ *
+ * Code functions for YAS537 based on Yamaha Android kernel driver.
+ * Copyright (c) 2014 Yamaha Corporation
+ *
+ * Author: Linus Walleij <linus.walleij@linaro.org>
+ */
+#include <linux/bitfield.h>
+#include <linux/bitops.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/gpio/consumer.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/mutex.h>
+#include <linux/pm_runtime.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <linux/random.h>
+#include <linux/units.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
+
+#include <asm/unaligned.h>
+
+/* Commonly used registers */
+#define YAS5XX_DEVICE_ID		0x80
+#define YAS5XX_MEASURE_DATA		0xB0
+
+/* These registers are used by YAS530, YAS532 and YAS533 */
+#define YAS530_ACTUATE_INIT_COIL	0x81
+#define YAS530_MEASURE			0x82
+#define YAS530_CONFIG			0x83
+#define YAS530_MEASURE_INTERVAL		0x84
+#define YAS530_OFFSET_X			0x85 /* [-31 .. 31] */
+#define YAS530_OFFSET_Y1		0x86 /* [-31 .. 31] */
+#define YAS530_OFFSET_Y2		0x87 /* [-31 .. 31] */
+#define YAS530_TEST1			0x88
+#define YAS530_TEST2			0x89
+#define YAS530_CAL			0x90
+
+/* Registers used by YAS537 */
+#define YAS537_MEASURE			0x81 /* Originally YAS537_REG_CMDR */
+#define YAS537_CONFIG			0x82 /* Originally YAS537_REG_CONFR */
+#define YAS537_MEASURE_INTERVAL		0x83 /* Originally YAS537_REG_INTRVLR */
+#define YAS537_OFFSET_X			0x84 /* Originally YAS537_REG_OXR */
+#define YAS537_OFFSET_Y1		0x85 /* Originally YAS537_REG_OY1R */
+#define YAS537_OFFSET_Y2		0x86 /* Originally YAS537_REG_OY2R */
+#define YAS537_AVR			0x87
+#define YAS537_HCK			0x88
+#define YAS537_LCK			0x89
+#define YAS537_SRST			0x90
+#define YAS537_ADCCAL			0x91
+#define YAS537_MTC			0x93
+#define YAS537_OC			0x9E
+#define YAS537_TRM			0x9F
+#define YAS537_CAL			0xC0
+
+/* Bits in the YAS5xx config register */
+#define YAS5XX_CONFIG_INTON		BIT(0) /* Interrupt on? */
+#define YAS5XX_CONFIG_INTHACT		BIT(1) /* Interrupt active high? */
+#define YAS5XX_CONFIG_CCK_MASK		GENMASK(4, 2)
+#define YAS5XX_CONFIG_CCK_SHIFT		2
+
+/* Bits in the measure command register */
+#define YAS5XX_MEASURE_START		BIT(0)
+#define YAS5XX_MEASURE_LDTC		BIT(1)
+#define YAS5XX_MEASURE_FORS		BIT(2)
+#define YAS5XX_MEASURE_DLYMES		BIT(4)
+#define YAS5XX_MEASURE_CONT		BIT(5)
+
+/* Bits in the measure data register */
+#define YAS5XX_MEASURE_DATA_BUSY	BIT(7)
+
+#define YAS530_DEVICE_ID		0x01 /* YAS530 (MS-3E) */
+#define YAS530_VERSION_A		0 /* YAS530 (MS-3E A) */
+#define YAS530_VERSION_B		1 /* YAS530B (MS-3E B) */
+#define YAS530_VERSION_A_COEF		380
+#define YAS530_VERSION_B_COEF		550
+#define YAS530_DATA_BITS		12
+#define YAS530_DATA_CENTER		BIT(YAS530_DATA_BITS - 1)
+#define YAS530_DATA_OVERFLOW		(BIT(YAS530_DATA_BITS) - 1)
+
+#define YAS532_DEVICE_ID		0x02 /* YAS532/YAS533 (MS-3R/F) */
+#define YAS532_VERSION_AB		0 /* YAS532/533 AB (MS-3R/F AB) */
+#define YAS532_VERSION_AC		1 /* YAS532/533 AC (MS-3R/F AC) */
+#define YAS532_VERSION_AB_COEF		1800
+#define YAS532_VERSION_AC_COEF_X	850
+#define YAS532_VERSION_AC_COEF_Y1	750
+#define YAS532_VERSION_AC_COEF_Y2	750
+#define YAS532_DATA_BITS		13
+#define YAS532_DATA_CENTER		BIT(YAS532_DATA_BITS - 1)
+#define YAS532_DATA_OVERFLOW		(BIT(YAS532_DATA_BITS) - 1)
+
+#define YAS537_DEVICE_ID		0x07 /* YAS537 (MS-3T) */
+#define YAS537_VERSION_0		0 /* Version naming unknown */
+#define YAS537_VERSION_1		1 /* Version naming unknown */
+#define YAS537_MAG_AVERAGE_32_MASK	GENMASK(6, 4)
+#define YAS537_MEASURE_TIME_WORST_US	1500
+#define YAS537_DEFAULT_SENSOR_DELAY_MS	50
+#define YAS537_MAG_RCOIL_TIME_US	65
+#define YAS537_MTC3_MASK_PREP		GENMASK(7, 0)
+#define YAS537_MTC3_MASK_GET		GENMASK(7, 5)
+#define YAS537_MTC3_ADD_BIT		BIT(4)
+#define YAS537_HCK_MASK_PREP		GENMASK(4, 0)
+#define YAS537_HCK_MASK_GET		GENMASK(7, 4)
+#define YAS537_LCK_MASK_PREP		GENMASK(4, 0)
+#define YAS537_LCK_MASK_GET		GENMASK(3, 0)
+#define YAS537_OC_MASK_GET		GENMASK(5, 0)
+
+/* Turn off device regulators etc after 5 seconds of inactivity */
+#define YAS5XX_AUTOSUSPEND_DELAY_MS	5000
+
+enum chip_ids {
+	yas530,
+	yas532,
+	yas533,
+	yas537,
+};
+
+static const int yas530_volatile_reg[] = {
+	YAS530_ACTUATE_INIT_COIL,
+	YAS530_MEASURE,
+};
+
+static const int yas537_volatile_reg[] = {
+	YAS537_MEASURE,
+};
+
+struct yas5xx_calibration {
+	/* Linearization calibration x, y1, y2 */
+	s32 r[3];
+	u32 f[3];
+	/* Temperature compensation calibration */
+	s16 Cx, Cy1, Cy2;
+	/* Misc calibration coefficients */
+	s8  a2, a3, a4, a6, a7, a8;
+	s16 a5, a9;
+	u8  k;
+	/* clock divider */
+	u8 dck;
+};
+
+struct yas5xx;
+
+/**
+ * struct yas5xx_chip_info - device-specific data and function pointers
+ * @devid: device ID number
+ * @product_name: product name of the YAS variant
+ * @version_names: version letters or namings
+ * @volatile_reg: device-specific volatile registers
+ * @volatile_reg_qty: quantity of device-specific volatile registers
+ * @scaling_val2: scaling value for IIO_CHAN_INFO_SCALE
+ * @t_ref: number of counts at reference temperature 20 °C
+ * @min_temp_x10: starting point of temperature counting in 1/10:s degrees Celsius
+ * @get_measure: function pointer to get a measurement
+ * @get_calibration_data: function pointer to get calibration data
+ * @dump_calibration: function pointer to dump calibration for debugging
+ * @measure_offsets: function pointer to measure the offsets
+ * @power_on: function pointer to power-on procedure
+ *
+ * The "t_ref" value for YAS532/533 is known from the Android driver.
+ * For YAS530 and YAS537 it was approximately measured.
+ *
+ * The temperatures "min_temp_x10" are derived from the temperature resolutions
+ * given in the data sheets.
+ */
+struct yas5xx_chip_info {
+	unsigned int devid;
+	const char *product_name;
+	const char *version_names[2];
+	const int *volatile_reg;
+	int volatile_reg_qty;
+	u32 scaling_val2;
+	u16 t_ref;
+	s16 min_temp_x10;
+	int (*get_measure)(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo);
+	int (*get_calibration_data)(struct yas5xx *yas5xx);
+	void (*dump_calibration)(struct yas5xx *yas5xx);
+	int (*measure_offsets)(struct yas5xx *yas5xx);
+	int (*power_on)(struct yas5xx *yas5xx);
+};
+
+/**
+ * struct yas5xx - state container for the YAS5xx driver
+ * @dev: parent device pointer
+ * @chip_info: device-specific data and function pointers
+ * @version: device version
+ * @calibration: calibration settings from the OTP storage
+ * @hard_offsets: offsets for each axis measured with initcoil actuated
+ * @orientation: mounting matrix, flipped axis etc
+ * @map: regmap to access the YAX5xx registers over I2C
+ * @regs: the vdd and vddio power regulators
+ * @reset: optional GPIO line used for handling RESET
+ * @lock: locks the magnetometer for exclusive use during a measurement (which
+ * involves several register transactions so the regmap lock is not enough)
+ * so that measurements get serialized in a first-come-first serve manner
+ * @scan: naturally aligned measurements
+ */
+struct yas5xx {
+	struct device *dev;
+	const struct yas5xx_chip_info *chip_info;
+	unsigned int version;
+	struct yas5xx_calibration calibration;
+	s8 hard_offsets[3];
+	struct iio_mount_matrix orientation;
+	struct regmap *map;
+	struct regulator_bulk_data regs[2];
+	struct gpio_desc *reset;
+	struct mutex lock;
+	/*
+	 * The scanout is 4 x 32 bits in CPU endianness.
+	 * Ensure timestamp is naturally aligned
+	 */
+	struct {
+		s32 channels[4];
+		s64 ts __aligned(8);
+	} scan;
+};
+
+/* On YAS530 the x, y1 and y2 values are 12 bits */
+static u16 yas530_extract_axis(u8 *data)
+{
+	u16 val;
+
+	/*
+	 * These are the bits used in a 16bit word:
+	 * 15 14 13 12 11 10 9  8  7  6  5  4  3  2  1  0
+	 *    x  x  x  x  x  x  x  x  x  x  x  x
+	 */
+	val = get_unaligned_be16(&data[0]);
+	val = FIELD_GET(GENMASK(14, 3), val);
+	return val;
+}
+
+/* On YAS532 the x, y1 and y2 values are 13 bits */
+static u16 yas532_extract_axis(u8 *data)
+{
+	u16 val;
+
+	/*
+	 * These are the bits used in a 16bit word:
+	 * 15 14 13 12 11 10 9  8  7  6  5  4  3  2  1  0
+	 *    x  x  x  x  x  x  x  x  x  x  x  x  x
+	 */
+	val = get_unaligned_be16(&data[0]);
+	val = FIELD_GET(GENMASK(14, 2), val);
+	return val;
+}
+
+/**
+ * yas530_measure() - Make a measure from the hardware
+ * @yas5xx: The device state
+ * @t: the raw temperature measurement
+ * @x: the raw x axis measurement
+ * @y1: the y1 axis measurement
+ * @y2: the y2 axis measurement
+ * @return: 0 on success or error code
+ *
+ * Used by YAS530, YAS532 and YAS533.
+ */
+static int yas530_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	unsigned int busy;
+	u8 data[8];
+	int ret;
+	u16 val;
+
+	mutex_lock(&yas5xx->lock);
+	ret = regmap_write(yas5xx->map, YAS530_MEASURE, YAS5XX_MEASURE_START);
+	if (ret < 0)
+		goto out_unlock;
+
+	/*
+	 * Typical time to measure 1500 us, max 2000 us so wait min 500 us
+	 * and at most 20000 us (one magnitude more than the datsheet max)
+	 * before timeout.
+	 */
+	ret = regmap_read_poll_timeout(yas5xx->map, YAS5XX_MEASURE_DATA, busy,
+				       !(busy & YAS5XX_MEASURE_DATA_BUSY),
+				       500, 20000);
+	if (ret) {
+		dev_err(yas5xx->dev, "timeout waiting for measurement\n");
+		goto out_unlock;
+	}
+
+	ret = regmap_bulk_read(yas5xx->map, YAS5XX_MEASURE_DATA,
+			       data, sizeof(data));
+	if (ret)
+		goto out_unlock;
+
+	mutex_unlock(&yas5xx->lock);
+
+	switch (ci->devid) {
+	case YAS530_DEVICE_ID:
+		/*
+		 * The t value is 9 bits in big endian format
+		 * These are the bits used in a 16bit word:
+		 * 15 14 13 12 11 10 9  8  7  6  5  4  3  2  1  0
+		 *    x  x  x  x  x  x  x  x  x
+		 */
+		val = get_unaligned_be16(&data[0]);
+		val = FIELD_GET(GENMASK(14, 6), val);
+		*t = val;
+		*x = yas530_extract_axis(&data[2]);
+		*y1 = yas530_extract_axis(&data[4]);
+		*y2 = yas530_extract_axis(&data[6]);
+		break;
+	case YAS532_DEVICE_ID:
+		/*
+		 * The t value is 10 bits in big endian format
+		 * These are the bits used in a 16bit word:
+		 * 15 14 13 12 11 10 9  8  7  6  5  4  3  2  1  0
+		 *    x  x  x  x  x  x  x  x  x  x
+		 */
+		val = get_unaligned_be16(&data[0]);
+		val = FIELD_GET(GENMASK(14, 5), val);
+		*t = val;
+		*x = yas532_extract_axis(&data[2]);
+		*y1 = yas532_extract_axis(&data[4]);
+		*y2 = yas532_extract_axis(&data[6]);
+		break;
+	default:
+		dev_err(yas5xx->dev, "unknown data format\n");
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+
+out_unlock:
+	mutex_unlock(&yas5xx->lock);
+	return ret;
+}
+
+/**
+ * yas537_measure() - Make a measure from the hardware
+ * @yas5xx: The device state
+ * @t: the raw temperature measurement
+ * @x: the raw x axis measurement
+ * @y1: the y1 axis measurement
+ * @y2: the y2 axis measurement
+ * @return: 0 on success or error code
+ */
+static int yas537_measure(struct yas5xx *yas5xx, u16 *t, u16 *x, u16 *y1, u16 *y2)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	unsigned int busy;
+	u8 data[8];
+	u16 xy1y2[3];
+	s32 h[3], s[3];
+	int i, ret;
+
+	mutex_lock(&yas5xx->lock);
+
+	/* Contrary to YAS530/532, also a "cont" bit is set, meaning unknown */
+	ret = regmap_write(yas5xx->map, YAS537_MEASURE, YAS5XX_MEASURE_START |
+			   YAS5XX_MEASURE_CONT);
+	if (ret < 0)
+		goto out_unlock;
+
+	/* Use same timeout like YAS530/532 but the bit is in data row 2 */
+	ret = regmap_read_poll_timeout(yas5xx->map, YAS5XX_MEASURE_DATA + 2, busy,
+				       !(busy & YAS5XX_MEASURE_DATA_BUSY),
+				       500, 20000);
+	if (ret) {
+		dev_err(yas5xx->dev, "timeout waiting for measurement\n");
+		goto out_unlock;
+	}
+
+	ret = regmap_bulk_read(yas5xx->map, YAS5XX_MEASURE_DATA,
+			       data, sizeof(data));
+	if (ret)
+		goto out_unlock;
+
+	mutex_unlock(&yas5xx->lock);
+
+	*t = get_unaligned_be16(&data[0]);
+	xy1y2[0] = FIELD_GET(GENMASK(13, 0), get_unaligned_be16(&data[2]));
+	xy1y2[1] = get_unaligned_be16(&data[4]);
+	xy1y2[2] = get_unaligned_be16(&data[6]);
+
+	/* The second version of YAS537 needs to include calibration coefficients */
+	if (yas5xx->version == YAS537_VERSION_1) {
+		for (i = 0; i < 3; i++)
+			s[i] = xy1y2[i] - BIT(13);
+		h[0] = (c->k *   (128 * s[0] + c->a2 * s[1] + c->a3 * s[2])) / BIT(13);
+		h[1] = (c->k * (c->a4 * s[0] + c->a5 * s[1] + c->a6 * s[2])) / BIT(13);
+		h[2] = (c->k * (c->a7 * s[0] + c->a8 * s[1] + c->a9 * s[2])) / BIT(13);
+		for (i = 0; i < 3; i++) {
+			clamp_val(h[i], -BIT(13), BIT(13) - 1);
+			xy1y2[i] = h[i] + BIT(13);
+		}
+	}
+
+	*x = xy1y2[0];
+	*y1 = xy1y2[1];
+	*y2 = xy1y2[2];
+
+	return 0;
+
+out_unlock:
+	mutex_unlock(&yas5xx->lock);
+	return ret;
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static s32 yas530_linearize(struct yas5xx *yas5xx, u16 val, int axis)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	static const s32 yas532ac_coef[] = {
+		YAS532_VERSION_AC_COEF_X,
+		YAS532_VERSION_AC_COEF_Y1,
+		YAS532_VERSION_AC_COEF_Y2,
+	};
+	s32 coef;
+
+	/* Select coefficients */
+	switch (ci->devid) {
+	case YAS530_DEVICE_ID:
+		if (yas5xx->version == YAS530_VERSION_A)
+			coef = YAS530_VERSION_A_COEF;
+		else
+			coef = YAS530_VERSION_B_COEF;
+		break;
+	case YAS532_DEVICE_ID:
+		if (yas5xx->version == YAS532_VERSION_AB)
+			coef = YAS532_VERSION_AB_COEF;
+		else
+			/* Elaborate coefficients */
+			coef = yas532ac_coef[axis];
+		break;
+	default:
+		dev_err(yas5xx->dev, "unknown device type\n");
+		return val;
+	}
+	/*
+	 * Linearization formula:
+	 *
+	 * x' = x - (3721 + 50 * f) + (xoffset - r) * c
+	 *
+	 * Where f and r are calibration values, c is a per-device
+	 * and sometimes per-axis coefficient.
+	 */
+	return val - (3721 + 50 * c->f[axis]) +
+		(yas5xx->hard_offsets[axis] - c->r[axis]) * coef;
+}
+
+static s32 yas5xx_calc_temperature(struct yas5xx *yas5xx, u16 t)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	s32 to;
+	u16 t_ref;
+	s16 min_temp_x10;
+	int ref_temp_x10;
+
+	t_ref = ci->t_ref;
+	min_temp_x10 = ci->min_temp_x10;
+	ref_temp_x10 = 200;
+
+	to = (min_temp_x10 + ((ref_temp_x10 - min_temp_x10) * t / t_ref)) * 100;
+	return to;
+}
+
+/**
+ * yas530_get_measure() - Measure a sample of all axis and process
+ * @yas5xx: The device state
+ * @to: Temperature out
+ * @xo: X axis out
+ * @yo: Y axis out
+ * @zo: Z axis out
+ * @return: 0 on success or error code
+ *
+ * Used by YAS530, YAS532 and YAS533.
+ */
+static int yas530_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	u16 t_ref, t_comp, t, x, y1, y2;
+	/* These are signed x, signed y1 etc */
+	s32 sx, sy1, sy2, sy, sz;
+	int ret;
+
+	/* We first get raw data that needs to be translated to [x,y,z] */
+	ret = yas530_measure(yas5xx, &t, &x, &y1, &y2);
+	if (ret)
+		return ret;
+
+	/* Do some linearization if available */
+	sx = yas530_linearize(yas5xx, x, 0);
+	sy1 = yas530_linearize(yas5xx, y1, 1);
+	sy2 = yas530_linearize(yas5xx, y2, 2);
+
+	/*
+	 * Set the temperature for compensation (unit: counts):
+	 * YAS532/YAS533 version AC uses the temperature deviation as a
+	 * multiplier. YAS530 and YAS532 version AB use solely the t value.
+	 */
+	t_ref = ci->t_ref;
+	if (ci->devid == YAS532_DEVICE_ID &&
+	    yas5xx->version == YAS532_VERSION_AC) {
+		t_comp = t - t_ref;
+	} else {
+		t_comp = t;
+	}
+
+	/*
+	 * Temperature compensation for x, y1, y2 respectively:
+	 *
+	 *          Cx * t_comp
+	 * x' = x - -----------
+	 *              100
+	 */
+	sx = sx - (c->Cx * t_comp) / 100;
+	sy1 = sy1 - (c->Cy1 * t_comp) / 100;
+	sy2 = sy2 - (c->Cy2 * t_comp) / 100;
+
+	/*
+	 * Break y1 and y2 into y and z, y1 and y2 are apparently encoding
+	 * y and z.
+	 */
+	sy = sy1 - sy2;
+	sz = -sy1 - sy2;
+
+	/* Calculate temperature readout */
+	*to = yas5xx_calc_temperature(yas5xx, t);
+
+	/*
+	 * Calibrate [x,y,z] with some formulas like this:
+	 *
+	 *            100 * x + a_2 * y + a_3 * z
+	 *  x' = k *  ---------------------------
+	 *                        10
+	 *
+	 *           a_4 * x + a_5 * y + a_6 * z
+	 *  y' = k * ---------------------------
+	 *                        10
+	 *
+	 *           a_7 * x + a_8 * y + a_9 * z
+	 *  z' = k * ---------------------------
+	 *                        10
+	 */
+	*xo = c->k * ((100 * sx + c->a2 * sy + c->a3 * sz) / 10);
+	*yo = c->k * ((c->a4 * sx + c->a5 * sy + c->a6 * sz) / 10);
+	*zo = c->k * ((c->a7 * sx + c->a8 * sy + c->a9 * sz) / 10);
+
+	return 0;
+}
+
+/**
+ * yas537_get_measure() - Measure a sample of all axis and process
+ * @yas5xx: The device state
+ * @to: Temperature out
+ * @xo: X axis out
+ * @yo: Y axis out
+ * @zo: Z axis out
+ * @return: 0 on success or error code
+ */
+static int yas537_get_measure(struct yas5xx *yas5xx, s32 *to, s32 *xo, s32 *yo, s32 *zo)
+{
+	u16 t, x, y1, y2;
+	int ret;
+
+	/* We first get raw data that needs to be translated to [x,y,z] */
+	ret = yas537_measure(yas5xx, &t, &x, &y1, &y2);
+	if (ret)
+		return ret;
+
+	/* Calculate temperature readout */
+	*to = yas5xx_calc_temperature(yas5xx, t);
+
+	/*
+	 * Unfortunately, no linearization or temperature compensation formulas
+	 * are known for YAS537.
+	 */
+
+	/* Calculate x, y, z from x, y1, y2 */
+	*xo = (x - BIT(13)) * 300;
+	*yo = (y1 - y2) * 1732 / 10;
+	*zo = (-y1 - y2 + BIT(14)) * 300;
+
+	return 0;
+}
+
+static int yas5xx_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2,
+			   long mask)
+{
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	s32 t, x, y, z;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_PROCESSED:
+	case IIO_CHAN_INFO_RAW:
+		pm_runtime_get_sync(yas5xx->dev);
+		ret = ci->get_measure(yas5xx, &t, &x, &y, &z);
+		pm_runtime_mark_last_busy(yas5xx->dev);
+		pm_runtime_put_autosuspend(yas5xx->dev);
+		if (ret)
+			return ret;
+		switch (chan->address) {
+		case 0:
+			*val = t;
+			break;
+		case 1:
+			*val = x;
+			break;
+		case 2:
+			*val = y;
+			break;
+		case 3:
+			*val = z;
+			break;
+		default:
+			dev_err(yas5xx->dev, "unknown channel\n");
+			return -EINVAL;
+		}
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 1;
+		*val2 = ci->scaling_val2;
+		return IIO_VAL_FRACTIONAL;
+	default:
+		/* Unknown request */
+		return -EINVAL;
+	}
+}
+
+static void yas5xx_fill_buffer(struct iio_dev *indio_dev)
+{
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	s32 t, x, y, z;
+	int ret;
+
+	pm_runtime_get_sync(yas5xx->dev);
+	ret = ci->get_measure(yas5xx, &t, &x, &y, &z);
+	pm_runtime_mark_last_busy(yas5xx->dev);
+	pm_runtime_put_autosuspend(yas5xx->dev);
+	if (ret) {
+		dev_err(yas5xx->dev, "error refilling buffer\n");
+		return;
+	}
+	yas5xx->scan.channels[0] = t;
+	yas5xx->scan.channels[1] = x;
+	yas5xx->scan.channels[2] = y;
+	yas5xx->scan.channels[3] = z;
+	iio_push_to_buffers_with_timestamp(indio_dev, &yas5xx->scan,
+					   iio_get_time_ns(indio_dev));
+}
+
+static irqreturn_t yas5xx_handle_trigger(int irq, void *p)
+{
+	const struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+
+	yas5xx_fill_buffer(indio_dev);
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+
+static const struct iio_mount_matrix *
+yas5xx_get_mount_matrix(const struct iio_dev *indio_dev,
+			const struct iio_chan_spec *chan)
+{
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+
+	return &yas5xx->orientation;
+}
+
+static const struct iio_chan_spec_ext_info yas5xx_ext_info[] = {
+	IIO_MOUNT_MATRIX(IIO_SHARED_BY_DIR, yas5xx_get_mount_matrix),
+	{ }
+};
+
+#define YAS5XX_AXIS_CHANNEL(axis, index)				\
+	{								\
+		.type = IIO_MAGN,					\
+		.modified = 1,						\
+		.channel2 = IIO_MOD_##axis,				\
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
+			BIT(IIO_CHAN_INFO_SCALE),			\
+		.ext_info = yas5xx_ext_info,				\
+		.address = index,					\
+		.scan_index = index,					\
+		.scan_type = {						\
+			.sign = 's',					\
+			.realbits = 32,					\
+			.storagebits = 32,				\
+			.endianness = IIO_CPU,				\
+		},							\
+	}
+
+static const struct iio_chan_spec yas5xx_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.address = 0,
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 32,
+			.storagebits = 32,
+			.endianness = IIO_CPU,
+		},
+	},
+	YAS5XX_AXIS_CHANNEL(X, 1),
+	YAS5XX_AXIS_CHANNEL(Y, 2),
+	YAS5XX_AXIS_CHANNEL(Z, 3),
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+static const unsigned long yas5xx_scan_masks[] = { GENMASK(3, 0), 0 };
+
+static const struct iio_info yas5xx_info = {
+	.read_raw = &yas5xx_read_raw,
+};
+
+static bool yas5xx_volatile_reg(struct device *dev, unsigned int reg)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	int reg_qty;
+	int i;
+
+	if (reg >= YAS5XX_MEASURE_DATA && reg < YAS5XX_MEASURE_DATA + 8)
+		return true;
+
+	/*
+	 * YAS versions share different registers on the same address,
+	 * need to differentiate.
+	 */
+	reg_qty = ci->volatile_reg_qty;
+	for (i = 0; i < reg_qty; i++) {
+		if (reg == ci->volatile_reg[i])
+			return true;
+	}
+
+	return false;
+}
+
+/* TODO: enable regmap cache, using mark dirty and sync at runtime resume */
+static const struct regmap_config yas5xx_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+	.max_register = 0xff,
+	.volatile_reg = yas5xx_volatile_reg,
+};
+
+/**
+ * yas530_extract_calibration() - extracts the a2-a9 and k calibration
+ * @data: the bitfield to use
+ * @c: the calibration to populate
+ *
+ * Used by YAS530, YAS532 and YAS533.
+ */
+static void yas530_extract_calibration(u8 *data, struct yas5xx_calibration *c)
+{
+	u64 val = get_unaligned_be64(data);
+
+	/*
+	 * Bitfield layout for the axis calibration data, for factor
+	 * a2 = 2 etc, k = k, c = clock divider
+	 *
+	 * n   7 6 5 4 3 2 1 0
+	 * 0 [ 2 2 2 2 2 2 3 3 ] bits 63 .. 56
+	 * 1 [ 3 3 4 4 4 4 4 4 ] bits 55 .. 48
+	 * 2 [ 5 5 5 5 5 5 6 6 ] bits 47 .. 40
+	 * 3 [ 6 6 6 6 7 7 7 7 ] bits 39 .. 32
+	 * 4 [ 7 7 7 8 8 8 8 8 ] bits 31 .. 24
+	 * 5 [ 8 9 9 9 9 9 9 9 ] bits 23 .. 16
+	 * 6 [ 9 k k k k k c c ] bits 15 .. 8
+	 * 7 [ c x x x x x x x ] bits  7 .. 0
+	 */
+	c->a2 = FIELD_GET(GENMASK_ULL(63, 58), val) - 32;
+	c->a3 = FIELD_GET(GENMASK_ULL(57, 54), val) - 8;
+	c->a4 = FIELD_GET(GENMASK_ULL(53, 48), val) - 32;
+	c->a5 = FIELD_GET(GENMASK_ULL(47, 42), val) + 38;
+	c->a6 = FIELD_GET(GENMASK_ULL(41, 36), val) - 32;
+	c->a7 = FIELD_GET(GENMASK_ULL(35, 29), val) - 64;
+	c->a8 = FIELD_GET(GENMASK_ULL(28, 23), val) - 32;
+	c->a9 = FIELD_GET(GENMASK_ULL(22, 15), val);
+	c->k = FIELD_GET(GENMASK_ULL(14, 10), val) + 10;
+	c->dck = FIELD_GET(GENMASK_ULL(9, 7), val);
+}
+
+static int yas530_get_calibration_data(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	u8 data[16];
+	u32 val;
+	int ret;
+
+	/* Dummy read, first read is ALWAYS wrong */
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
+	if (ret)
+		return ret;
+
+	/* Actual calibration readout */
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
+	if (ret)
+		return ret;
+	dev_dbg(yas5xx->dev, "calibration data: %16ph\n", data);
+
+	/* Contribute calibration data to the input pool for kernel entropy */
+	add_device_randomness(data, sizeof(data));
+
+	/* Extract version */
+	yas5xx->version = data[15] & GENMASK(1, 0);
+
+	/* Extract the calibration from the bitfield */
+	c->Cx = data[0] * 6 - 768;
+	c->Cy1 = data[1] * 6 - 768;
+	c->Cy2 = data[2] * 6 - 768;
+	yas530_extract_calibration(&data[3], c);
+
+	/*
+	 * Extract linearization:
+	 * Linearization layout in the 32 bits at byte 11:
+	 * The r factors are 6 bit values where bit 5 is the sign
+	 *
+	 * n    7  6  5  4  3  2  1  0
+	 * 0 [ xx xx xx r0 r0 r0 r0 r0 ] bits 31 .. 24
+	 * 1 [ r0 f0 f0 r1 r1 r1 r1 r1 ] bits 23 .. 16
+	 * 2 [ r1 f1 f1 r2 r2 r2 r2 r2 ] bits 15 .. 8
+	 * 3 [ r2 f2 f2 xx xx xx xx xx ] bits  7 .. 0
+	 */
+	val = get_unaligned_be32(&data[11]);
+	c->f[0] = FIELD_GET(GENMASK(22, 21), val);
+	c->f[1] = FIELD_GET(GENMASK(14, 13), val);
+	c->f[2] = FIELD_GET(GENMASK(6, 5), val);
+	c->r[0] = sign_extend32(FIELD_GET(GENMASK(28, 23), val), 5);
+	c->r[1] = sign_extend32(FIELD_GET(GENMASK(20, 15), val), 5);
+	c->r[2] = sign_extend32(FIELD_GET(GENMASK(12, 7), val), 5);
+
+	return 0;
+}
+
+static int yas532_get_calibration_data(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	u8 data[14];
+	u32 val;
+	int ret;
+
+	/* Dummy read, first read is ALWAYS wrong */
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
+	if (ret)
+		return ret;
+	/* Actual calibration readout */
+	ret = regmap_bulk_read(yas5xx->map, YAS530_CAL, data, sizeof(data));
+	if (ret)
+		return ret;
+	dev_dbg(yas5xx->dev, "calibration data: %14ph\n", data);
+
+	/* Sanity check, is this all zeroes? */
+	if (!memchr_inv(data, 0x00, 13) && !(data[13] & BIT(7)))
+		dev_warn(yas5xx->dev, "calibration is blank!\n");
+
+	/* Contribute calibration data to the input pool for kernel entropy */
+	add_device_randomness(data, sizeof(data));
+
+	/* Only one bit of version info reserved here as far as we know */
+	yas5xx->version = data[13] & BIT(0);
+
+	/* Extract calibration from the bitfield */
+	c->Cx = data[0] * 10 - 1280;
+	c->Cy1 = data[1] * 10 - 1280;
+	c->Cy2 = data[2] * 10 - 1280;
+	yas530_extract_calibration(&data[3], c);
+
+	/*
+	 * Extract linearization:
+	 * Linearization layout in the 32 bits at byte 10:
+	 * The r factors are 6 bit values where bit 5 is the sign
+	 *
+	 * n    7  6  5  4  3  2  1  0
+	 * 0 [ xx r0 r0 r0 r0 r0 r0 f0 ] bits 31 .. 24
+	 * 1 [ f0 r1 r1 r1 r1 r1 r1 f1 ] bits 23 .. 16
+	 * 2 [ f1 r2 r2 r2 r2 r2 r2 f2 ] bits 15 .. 8
+	 * 3 [ f2 xx xx xx xx xx xx xx ] bits  7 .. 0
+	 */
+	val = get_unaligned_be32(&data[10]);
+	c->f[0] = FIELD_GET(GENMASK(24, 23), val);
+	c->f[1] = FIELD_GET(GENMASK(16, 15), val);
+	c->f[2] = FIELD_GET(GENMASK(8, 7), val);
+	c->r[0] = sign_extend32(FIELD_GET(GENMASK(30, 25), val), 5);
+	c->r[1] = sign_extend32(FIELD_GET(GENMASK(22, 17), val), 5);
+	c->r[2] = sign_extend32(FIELD_GET(GENMASK(14, 7), val), 5);
+
+	return 0;
+}
+
+static int yas537_get_calibration_data(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+	u8 data[17];
+	u32 val1, val2, val3, val4;
+	int i, ret;
+
+	/* Writing SRST register */
+	ret = regmap_write(yas5xx->map, YAS537_SRST, BIT(1));
+	if (ret)
+		return ret;
+
+	/* Calibration readout, YAS537 needs one readout only */
+	ret = regmap_bulk_read(yas5xx->map, YAS537_CAL, data, sizeof(data));
+	if (ret)
+		return ret;
+	dev_dbg(yas5xx->dev, "calibration data: %17ph\n", data);
+
+	/* Sanity check, is this all zeroes? */
+	if (!memchr_inv(data, 0x00, 16) && !FIELD_GET(GENMASK(5, 0), data[16]))
+		dev_warn(yas5xx->dev, "calibration is blank!\n");
+
+	/* Contribute calibration data to the input pool for kernel entropy */
+	add_device_randomness(data, sizeof(data));
+
+	/* Extract version information */
+	yas5xx->version = FIELD_GET(GENMASK(7, 6), data[16]);
+
+	/* There are two versions of YAS537 behaving differently */
+	switch (yas5xx->version) {
+	case YAS537_VERSION_0:
+		/*
+		 * The first version simply writes data back into registers:
+		 *
+		 * data[0]  YAS537_MTC		0x93
+		 * data[1]			0x94
+		 * data[2]			0x95
+		 * data[3]			0x96
+		 * data[4]			0x97
+		 * data[5]			0x98
+		 * data[6]			0x99
+		 * data[7]			0x9a
+		 * data[8]			0x9b
+		 * data[9]			0x9c
+		 * data[10]			0x9d
+		 * data[11] YAS537_OC		0x9e
+		 *
+		 * data[12] YAS537_OFFSET_X	0x84
+		 * data[13] YAS537_OFFSET_Y1	0x85
+		 * data[14] YAS537_OFFSET_Y2	0x86
+		 *
+		 * data[15] YAS537_HCK		0x88
+		 * data[16] YAS537_LCK		0x89
+		 */
+		for (i = 0; i < 12; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_MTC + i,
+					   data[i]);
+			if (ret)
+				return ret;
+		}
+		for (i = 0; i < 3; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_OFFSET_X + i,
+					   data[i + 12]);
+			if (ret)
+				return ret;
+			yas5xx->hard_offsets[i] = data[i + 12];
+		}
+		for (i = 0; i < 2; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_HCK + i,
+					   data[i + 15]);
+			if (ret)
+				return ret;
+		}
+		break;
+	case YAS537_VERSION_1:
+		/*
+		 * The second version writes some data into registers but also
+		 * extracts calibration coefficients.
+		 *
+		 * Registers being written:
+		 *
+		 * data[0]  YAS537_MTC			0x93
+		 * data[1]  YAS537_MTC+1		0x94
+		 * data[2]  YAS537_MTC+2		0x95
+		 * data[3]  YAS537_MTC+3 (partially)	0x96
+		 *
+		 * data[12] YAS537_OFFSET_X		0x84
+		 * data[13] YAS537_OFFSET_Y1		0x85
+		 * data[14] YAS537_OFFSET_Y2		0x86
+		 *
+		 * data[15] YAS537_HCK (partially)	0x88
+		 *          YAS537_LCK (partially)	0x89
+		 * data[16] YAS537_OC  (partially)	0x9e
+		 */
+		for (i = 0; i < 3; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_MTC + i,
+					   data[i]);
+			if (ret)
+				return ret;
+		}
+		for (i = 0; i < 3; i++) {
+			ret = regmap_write(yas5xx->map, YAS537_OFFSET_X + i,
+					   data[i + 12]);
+			if (ret)
+				return ret;
+			yas5xx->hard_offsets[i] = data[i + 12];
+		}
+		/*
+		 * Visualization of partially taken data:
+		 *
+		 * data[3]       n 7 6 5 4 3 2 1 0
+		 * YAS537_MTC+3    x x x 1 0 0 0 0
+		 *
+		 * data[15]      n 7 6 5 4 3 2 1 0
+		 * YAS537_HCK      x x x x 0
+		 *
+		 * data[15]      n 7 6 5 4 3 2 1 0
+		 * YAS537_LCK              x x x x 0
+		 *
+		 * data[16]      n 7 6 5 4 3 2 1 0
+		 * YAS537_OC           x x x x x x
+		 */
+		ret = regmap_write(yas5xx->map, YAS537_MTC + 3,
+				   FIELD_PREP(YAS537_MTC3_MASK_PREP,
+				   FIELD_GET(YAS537_MTC3_MASK_GET, data[3])) |
+				   YAS537_MTC3_ADD_BIT);
+		if (ret)
+			return ret;
+		ret = regmap_write(yas5xx->map, YAS537_HCK,
+				   FIELD_PREP(YAS537_HCK_MASK_PREP,
+				   FIELD_GET(YAS537_HCK_MASK_GET, data[15])));
+		if (ret)
+			return ret;
+		ret = regmap_write(yas5xx->map, YAS537_LCK,
+				   FIELD_PREP(YAS537_LCK_MASK_PREP,
+				   FIELD_GET(YAS537_LCK_MASK_GET, data[15])));
+		if (ret)
+			return ret;
+		ret = regmap_write(yas5xx->map, YAS537_OC,
+				   FIELD_GET(YAS537_OC_MASK_GET, data[16]));
+		if (ret)
+			return ret;
+		/*
+		 * For data extraction, build some blocks. Four 32-bit blocks
+		 * look appropriate.
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[0]   0 [ Cx Cx Cx Cx Cx Cx Cx Cx ] bits 31 .. 24
+		 *  data[1]   1 [ Cx C1 C1 C1 C1 C1 C1 C1 ] bits 23 .. 16
+		 *  data[2]   2 [ C1 C1 C2 C2 C2 C2 C2 C2 ] bits 15 .. 8
+		 *  data[3]   3 [ C2 C2 C2                ] bits  7 .. 0
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[3]   0 [          a2 a2 a2 a2 a2 ] bits 31 .. 24
+		 *  data[4]   1 [ a2 a2 a3 a3 a3 a3 a3 a3 ] bits 23 .. 16
+		 *  data[5]   2 [ a3 a4 a4 a4 a4 a4 a4 a4 ] bits 15 .. 8
+		 *  data[6]   3 [ a4                      ] bits  7 .. 0
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[6]   0 [    a5 a5 a5 a5 a5 a5 a5 ] bits 31 .. 24
+		 *  data[7]   1 [ a5 a5 a6 a6 a6 a6 a6 a6 ] bits 23 .. 16
+		 *  data[8]   2 [ a6 a7 a7 a7 a7 a7 a7 a7 ] bits 15 .. 8
+		 *  data[9]   3 [ a7                      ] bits  7 .. 0
+		 *
+		 *            n    7  6  5  4  3  2  1  0
+		 *  data[9]   0 [    a8 a8 a8 a8 a8 a8 a8 ] bits 31 .. 24
+		 *  data[10]  1 [ a9 a9 a9 a9 a9 a9 a9 a9 ] bits 23 .. 16
+		 *  data[11]  2 [ a9  k  k  k  k  k  k  k ] bits 15 .. 8
+		 *  data[12]  3 [                         ] bits  7 .. 0
+		 */
+		val1 = get_unaligned_be32(&data[0]);
+		val2 = get_unaligned_be32(&data[3]);
+		val3 = get_unaligned_be32(&data[6]);
+		val4 = get_unaligned_be32(&data[9]);
+		/* Extract calibration coefficients and modify */
+		c->Cx  = FIELD_GET(GENMASK(31, 23), val1) - 256;
+		c->Cy1 = FIELD_GET(GENMASK(22, 14), val1) - 256;
+		c->Cy2 = FIELD_GET(GENMASK(13,  5), val1) - 256;
+		c->a2  = FIELD_GET(GENMASK(28, 22), val2) -  64;
+		c->a3  = FIELD_GET(GENMASK(21, 15), val2) -  64;
+		c->a4  = FIELD_GET(GENMASK(14,  7), val2) - 128;
+		c->a5  = FIELD_GET(GENMASK(30, 22), val3) - 112;
+		c->a6  = FIELD_GET(GENMASK(21, 15), val3) -  64;
+		c->a7  = FIELD_GET(GENMASK(14,  7), val3) - 128;
+		c->a8  = FIELD_GET(GENMASK(30, 24), val4) -  64;
+		c->a9  = FIELD_GET(GENMASK(23, 15), val4) - 112;
+		c->k   = FIELD_GET(GENMASK(14,  8), val4);
+		break;
+	default:
+		dev_err(yas5xx->dev, "unknown version of YAS537\n");
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static void yas530_dump_calibration(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+
+	dev_dbg(yas5xx->dev, "f[] = [%d, %d, %d]\n",
+		c->f[0], c->f[1], c->f[2]);
+	dev_dbg(yas5xx->dev, "r[] = [%d, %d, %d]\n",
+		c->r[0], c->r[1], c->r[2]);
+	dev_dbg(yas5xx->dev, "Cx = %d\n", c->Cx);
+	dev_dbg(yas5xx->dev, "Cy1 = %d\n", c->Cy1);
+	dev_dbg(yas5xx->dev, "Cy2 = %d\n", c->Cy2);
+	dev_dbg(yas5xx->dev, "a2 = %d\n", c->a2);
+	dev_dbg(yas5xx->dev, "a3 = %d\n", c->a3);
+	dev_dbg(yas5xx->dev, "a4 = %d\n", c->a4);
+	dev_dbg(yas5xx->dev, "a5 = %d\n", c->a5);
+	dev_dbg(yas5xx->dev, "a6 = %d\n", c->a6);
+	dev_dbg(yas5xx->dev, "a7 = %d\n", c->a7);
+	dev_dbg(yas5xx->dev, "a8 = %d\n", c->a8);
+	dev_dbg(yas5xx->dev, "a9 = %d\n", c->a9);
+	dev_dbg(yas5xx->dev, "k = %d\n", c->k);
+	dev_dbg(yas5xx->dev, "dck = %d\n", c->dck);
+}
+
+static void yas537_dump_calibration(struct yas5xx *yas5xx)
+{
+	struct yas5xx_calibration *c = &yas5xx->calibration;
+
+	if (yas5xx->version == YAS537_VERSION_1) {
+		dev_dbg(yas5xx->dev, "Cx = %d\n", c->Cx);
+		dev_dbg(yas5xx->dev, "Cy1 = %d\n", c->Cy1);
+		dev_dbg(yas5xx->dev, "Cy2 = %d\n", c->Cy2);
+		dev_dbg(yas5xx->dev, "a2 = %d\n", c->a2);
+		dev_dbg(yas5xx->dev, "a3 = %d\n", c->a3);
+		dev_dbg(yas5xx->dev, "a4 = %d\n", c->a4);
+		dev_dbg(yas5xx->dev, "a5 = %d\n", c->a5);
+		dev_dbg(yas5xx->dev, "a6 = %d\n", c->a6);
+		dev_dbg(yas5xx->dev, "a7 = %d\n", c->a7);
+		dev_dbg(yas5xx->dev, "a8 = %d\n", c->a8);
+		dev_dbg(yas5xx->dev, "a9 = %d\n", c->a9);
+		dev_dbg(yas5xx->dev, "k = %d\n", c->k);
+	}
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static int yas530_set_offsets(struct yas5xx *yas5xx, s8 ox, s8 oy1, s8 oy2)
+{
+	int ret;
+
+	ret = regmap_write(yas5xx->map, YAS530_OFFSET_X, ox);
+	if (ret)
+		return ret;
+	ret = regmap_write(yas5xx->map, YAS530_OFFSET_Y1, oy1);
+	if (ret)
+		return ret;
+	return regmap_write(yas5xx->map, YAS530_OFFSET_Y2, oy2);
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static s8 yas530_adjust_offset(s8 old, int bit, u16 center, u16 measure)
+{
+	if (measure > center)
+		return old + BIT(bit);
+	if (measure < center)
+		return old - BIT(bit);
+	return old;
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static int yas530_measure_offsets(struct yas5xx *yas5xx)
+{
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	int ret;
+	u16 center;
+	u16 t, x, y1, y2;
+	s8 ox, oy1, oy2;
+	int i;
+
+	/* Actuate the init coil and measure offsets */
+	ret = regmap_write(yas5xx->map, YAS530_ACTUATE_INIT_COIL, 0);
+	if (ret)
+		return ret;
+
+	/* When the initcoil is active this should be around the center */
+	switch (ci->devid) {
+	case YAS530_DEVICE_ID:
+		center = YAS530_DATA_CENTER;
+		break;
+	case YAS532_DEVICE_ID:
+		center = YAS532_DATA_CENTER;
+		break;
+	default:
+		dev_err(yas5xx->dev, "unknown device type\n");
+		return -EINVAL;
+	}
+
+	/*
+	 * We set offsets in the interval +-31 by iterating
+	 * +-16, +-8, +-4, +-2, +-1 adjusting the offsets each
+	 * time, then writing the final offsets into the
+	 * registers.
+	 *
+	 * NOTE: these offsets are NOT in the same unit or magnitude
+	 * as the values for [x, y1, y2]. The value is +/-31
+	 * but the effect on the raw values is much larger.
+	 * The effect of the offset is to bring the measure
+	 * rougly to the center.
+	 */
+	ox = 0;
+	oy1 = 0;
+	oy2 = 0;
+
+	for (i = 4; i >= 0; i--) {
+		ret = yas530_set_offsets(yas5xx, ox, oy1, oy2);
+		if (ret)
+			return ret;
+
+		ret = yas530_measure(yas5xx, &t, &x, &y1, &y2);
+		if (ret)
+			return ret;
+		dev_dbg(yas5xx->dev, "measurement %d: x=%d, y1=%d, y2=%d\n",
+			5-i, x, y1, y2);
+
+		ox = yas530_adjust_offset(ox, i, center, x);
+		oy1 = yas530_adjust_offset(oy1, i, center, y1);
+		oy2 = yas530_adjust_offset(oy2, i, center, y2);
+	}
+
+	/* Needed for calibration algorithm */
+	yas5xx->hard_offsets[0] = ox;
+	yas5xx->hard_offsets[1] = oy1;
+	yas5xx->hard_offsets[2] = oy2;
+	ret = yas530_set_offsets(yas5xx, ox, oy1, oy2);
+	if (ret)
+		return ret;
+
+	dev_info(yas5xx->dev, "discovered hard offsets: x=%d, y1=%d, y2=%d\n",
+		 ox, oy1, oy2);
+	return 0;
+}
+
+/* Used by YAS530, YAS532 and YAS533 */
+static int yas530_power_on(struct yas5xx *yas5xx)
+{
+	unsigned int val;
+	int ret;
+
+	/* Zero the test registers */
+	ret = regmap_write(yas5xx->map, YAS530_TEST1, 0);
+	if (ret)
+		return ret;
+	ret = regmap_write(yas5xx->map, YAS530_TEST2, 0);
+	if (ret)
+		return ret;
+
+	/* Set up for no interrupts, calibrated clock divider */
+	val = FIELD_PREP(YAS5XX_CONFIG_CCK_MASK, yas5xx->calibration.dck);
+	ret = regmap_write(yas5xx->map, YAS530_CONFIG, val);
+	if (ret)
+		return ret;
+
+	/* Measure interval 0 (back-to-back?)  */
+	return regmap_write(yas5xx->map, YAS530_MEASURE_INTERVAL, 0);
+}
+
+static int yas537_power_on(struct yas5xx *yas5xx)
+{
+	__be16 buf;
+	int ret;
+	u8 intrvl;
+
+	/* Writing ADCCAL and TRM registers */
+	buf = cpu_to_be16(GENMASK(9, 3));
+	ret = regmap_bulk_write(yas5xx->map, YAS537_ADCCAL, &buf, sizeof(buf));
+	if (ret)
+		return ret;
+	ret = regmap_write(yas5xx->map, YAS537_TRM, GENMASK(7, 0));
+	if (ret)
+		return ret;
+
+	/* The interval value is static in regular operation */
+	intrvl = (YAS537_DEFAULT_SENSOR_DELAY_MS * MILLI
+		 - YAS537_MEASURE_TIME_WORST_US) / 4100;
+	ret = regmap_write(yas5xx->map, YAS537_MEASURE_INTERVAL, intrvl);
+	if (ret)
+		return ret;
+
+	/* The average value is also static in regular operation */
+	ret = regmap_write(yas5xx->map, YAS537_AVR, YAS537_MAG_AVERAGE_32_MASK);
+	if (ret)
+		return ret;
+
+	/* Perform the "rcoil" part but skip the "last_after_rcoil" read */
+	ret = regmap_write(yas5xx->map, YAS537_CONFIG, BIT(3));
+	if (ret)
+		return ret;
+
+	/* Wait until the coil has ramped up */
+	usleep_range(YAS537_MAG_RCOIL_TIME_US, YAS537_MAG_RCOIL_TIME_US + 100);
+
+	return 0;
+}
+
+static const struct yas5xx_chip_info yas5xx_chip_info_tbl[] = {
+	[yas530] = {
+		.devid = YAS530_DEVICE_ID,
+		.product_name = "YAS530 MS-3E",
+		.version_names = { "A", "B" },
+		.volatile_reg = yas530_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg),
+		.scaling_val2 = 100000000, /* picotesla to Gauss */
+		.t_ref = 182, /* counts */
+		.min_temp_x10 = -620, /* 1/10:s degrees Celsius */
+		.get_measure = yas530_get_measure,
+		.get_calibration_data = yas530_get_calibration_data,
+		.dump_calibration = yas530_dump_calibration,
+		.measure_offsets = yas530_measure_offsets,
+		.power_on = yas530_power_on,
+	},
+	[yas532] = {
+		.devid = YAS532_DEVICE_ID,
+		.product_name = "YAS532 MS-3R",
+		.version_names = { "AB", "AC" },
+		.volatile_reg = yas530_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg),
+		.scaling_val2 = 100000, /* nanotesla to Gauss */
+		.t_ref = 390, /* counts */
+		.min_temp_x10 = -500, /* 1/10:s degrees Celsius */
+		.get_measure = yas530_get_measure,
+		.get_calibration_data = yas532_get_calibration_data,
+		.dump_calibration = yas530_dump_calibration,
+		.measure_offsets = yas530_measure_offsets,
+		.power_on = yas530_power_on,
+	},
+	[yas533] = {
+		.devid = YAS532_DEVICE_ID,
+		.product_name = "YAS533 MS-3F",
+		.version_names = { "AB", "AC" },
+		.volatile_reg = yas530_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas530_volatile_reg),
+		.scaling_val2 = 100000, /* nanotesla to Gauss */
+		.t_ref = 390, /* counts */
+		.min_temp_x10 = -500, /* 1/10:s degrees Celsius */
+		.get_measure = yas530_get_measure,
+		.get_calibration_data = yas532_get_calibration_data,
+		.dump_calibration = yas530_dump_calibration,
+		.measure_offsets = yas530_measure_offsets,
+		.power_on = yas530_power_on,
+	},
+	[yas537] = {
+		.devid = YAS537_DEVICE_ID,
+		.product_name = "YAS537 MS-3T",
+		.version_names = { "v0", "v1" }, /* version naming unknown */
+		.volatile_reg = yas537_volatile_reg,
+		.volatile_reg_qty = ARRAY_SIZE(yas537_volatile_reg),
+		.scaling_val2 = 100000, /* nanotesla to Gauss */
+		.t_ref = 8120, /* counts */
+		.min_temp_x10 = -3860, /* 1/10:s degrees Celsius */
+		.get_measure = yas537_get_measure,
+		.get_calibration_data = yas537_get_calibration_data,
+		.dump_calibration = yas537_dump_calibration,
+		/* .measure_offets is not needed for yas537 */
+		.power_on = yas537_power_on,
+	},
+};
+
+static int yas5xx_probe(struct i2c_client *i2c,
+			const struct i2c_device_id *id)
+{
+	struct iio_dev *indio_dev;
+	struct device *dev = &i2c->dev;
+	struct yas5xx *yas5xx;
+	const struct yas5xx_chip_info *ci;
+	int id_check;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*yas5xx));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	yas5xx = iio_priv(indio_dev);
+	i2c_set_clientdata(i2c, indio_dev);
+	yas5xx->dev = dev;
+	mutex_init(&yas5xx->lock);
+
+	ret = iio_read_mount_matrix(dev, &yas5xx->orientation);
+	if (ret)
+		return ret;
+
+	yas5xx->regs[0].supply = "vdd";
+	yas5xx->regs[1].supply = "iovdd";
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(yas5xx->regs),
+				      yas5xx->regs);
+	if (ret)
+		return dev_err_probe(dev, ret, "cannot get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
+	if (ret)
+		return dev_err_probe(dev, ret, "cannot enable regulators\n");
+
+	/* See comment in runtime resume callback */
+	usleep_range(31000, 40000);
+
+	/* This will take the device out of reset if need be */
+	yas5xx->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);
+	if (IS_ERR(yas5xx->reset)) {
+		ret = dev_err_probe(dev, PTR_ERR(yas5xx->reset), "failed to get reset line\n");
+		goto reg_off;
+	}
+
+	yas5xx->map = devm_regmap_init_i2c(i2c, &yas5xx_regmap_config);
+	if (IS_ERR(yas5xx->map)) {
+		ret = dev_err_probe(dev, PTR_ERR(yas5xx->map), "failed to allocate register map\n");
+		goto assert_reset;
+	}
+
+	ci = device_get_match_data(dev);
+	if (!ci)
+		ci = (const struct yas5xx_chip_info *)id->driver_data;
+	yas5xx->chip_info = ci;
+
+	ret = regmap_read(yas5xx->map, YAS5XX_DEVICE_ID, &id_check);
+	if (ret)
+		goto assert_reset;
+
+	if (id_check != ci->devid) {
+		ret = dev_err_probe(dev, -ENODEV,
+				    "device ID %02x doesn't match %s\n",
+				    id_check, id->name);
+		goto assert_reset;
+	}
+
+	ret = ci->get_calibration_data(yas5xx);
+	if (ret)
+		goto assert_reset;
+
+	dev_info(dev, "detected %s %s\n", ci->product_name,
+		 ci->version_names[yas5xx->version]);
+
+	ci->dump_calibration(yas5xx);
+
+	ret = ci->power_on(yas5xx);
+	if (ret)
+		goto assert_reset;
+
+	if (ci->measure_offsets) {
+		ret = ci->measure_offsets(yas5xx);
+		if (ret)
+			goto assert_reset;
+	}
+
+	indio_dev->info = &yas5xx_info;
+	indio_dev->available_scan_masks = yas5xx_scan_masks;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->name = id->name;
+	indio_dev->channels = yas5xx_channels;
+	indio_dev->num_channels = ARRAY_SIZE(yas5xx_channels);
+
+	ret = iio_triggered_buffer_setup(indio_dev, NULL,
+					 yas5xx_handle_trigger,
+					 NULL);
+	if (ret) {
+		dev_err_probe(dev, ret, "triggered buffer setup failed\n");
+		goto assert_reset;
+	}
+
+	ret = iio_device_register(indio_dev);
+	if (ret) {
+		dev_err_probe(dev, ret, "device register failed\n");
+		goto cleanup_buffer;
+	}
+
+	/* Take runtime PM online */
+	pm_runtime_get_noresume(dev);
+	pm_runtime_set_active(dev);
+	pm_runtime_enable(dev);
+
+	pm_runtime_set_autosuspend_delay(dev, YAS5XX_AUTOSUSPEND_DELAY_MS);
+	pm_runtime_use_autosuspend(dev);
+	pm_runtime_put(dev);
+
+	return 0;
+
+cleanup_buffer:
+	iio_triggered_buffer_cleanup(indio_dev);
+assert_reset:
+	gpiod_set_value_cansleep(yas5xx->reset, 1);
+reg_off:
+	regulator_bulk_disable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
+
+	return ret;
+}
+
+static void yas5xx_remove(struct i2c_client *i2c)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(i2c);
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	struct device *dev = &i2c->dev;
+
+	iio_device_unregister(indio_dev);
+	iio_triggered_buffer_cleanup(indio_dev);
+	/*
+	 * Now we can't get any more reads from the device, which would
+	 * also call pm_runtime* functions and race with our disable
+	 * code. Disable PM runtime in orderly fashion and power down.
+	 */
+	pm_runtime_get_sync(dev);
+	pm_runtime_put_noidle(dev);
+	pm_runtime_disable(dev);
+	gpiod_set_value_cansleep(yas5xx->reset, 1);
+	regulator_bulk_disable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
+}
+
+static int yas5xx_runtime_suspend(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+
+	gpiod_set_value_cansleep(yas5xx->reset, 1);
+	regulator_bulk_disable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
+
+	return 0;
+}
+
+static int yas5xx_runtime_resume(struct device *dev)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct yas5xx *yas5xx = iio_priv(indio_dev);
+	const struct yas5xx_chip_info *ci = yas5xx->chip_info;
+	int ret;
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
+	if (ret) {
+		dev_err(dev, "cannot enable regulators\n");
+		return ret;
+	}
+
+	/*
+	 * The YAS530 datasheet says TVSKW is up to 30 ms, after that 1 ms
+	 * for all voltages to settle. The YAS532 is 10ms then 4ms for the
+	 * I2C to come online. Let's keep it safe and put this at 31ms.
+	 */
+	usleep_range(31000, 40000);
+	gpiod_set_value_cansleep(yas5xx->reset, 0);
+
+	ret = ci->power_on(yas5xx);
+	if (ret) {
+		dev_err(dev, "cannot power on\n");
+		goto out_reset;
+	}
+
+	return 0;
+
+out_reset:
+	gpiod_set_value_cansleep(yas5xx->reset, 1);
+	regulator_bulk_disable(ARRAY_SIZE(yas5xx->regs), yas5xx->regs);
+
+	return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(yas5xx_dev_pm_ops, yas5xx_runtime_suspend,
+				 yas5xx_runtime_resume, NULL);
+
+static const struct i2c_device_id yas5xx_id[] = {
+	{"yas530", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas530] },
+	{"yas532", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas532] },
+	{"yas533", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas533] },
+	{"yas537", (kernel_ulong_t)&yas5xx_chip_info_tbl[yas537] },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, yas5xx_id);
+
+static const struct of_device_id yas5xx_of_match[] = {
+	{ .compatible = "yamaha,yas530", &yas5xx_chip_info_tbl[yas530] },
+	{ .compatible = "yamaha,yas532", &yas5xx_chip_info_tbl[yas532] },
+	{ .compatible = "yamaha,yas533", &yas5xx_chip_info_tbl[yas533] },
+	{ .compatible = "yamaha,yas537", &yas5xx_chip_info_tbl[yas537] },
+	{}
+};
+MODULE_DEVICE_TABLE(of, yas5xx_of_match);
+
+static struct i2c_driver yas5xx_driver = {
+	.driver	 = {
+		.name	= "yas5xx",
+		.of_match_table = yas5xx_of_match,
+		.pm = pm_ptr(&yas5xx_dev_pm_ops),
+	},
+	.probe	  = yas5xx_probe,
+	.remove	  = yas5xx_remove,
+	.id_table = yas5xx_id,
+};
+module_i2c_driver(yas5xx_driver);
+
+MODULE_DESCRIPTION("Yamaha YAS53x 3-axis magnetometer driver");
+MODULE_AUTHOR("Linus Walleij");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/multiplexer/Kconfig b/drivers/iio/multiplexer/Kconfig
index a1e1332d1206..928f424a1ed3 100644
--- a/drivers/iio/multiplexer/Kconfig
+++ b/drivers/iio/multiplexer/Kconfig
@@ -9,7 +9,6 @@ menu "Multiplexers"
 config IIO_MUX
 	tristate "IIO multiplexer driver"
 	select MULTIPLEXER
-	depends on OF || COMPILE_TEST
 	help
 	  Say yes here to build support for the IIO multiplexer.
 
diff --git a/drivers/iio/multiplexer/iio-mux.c b/drivers/iio/multiplexer/iio-mux.c
index 0422ef57914c..93558fddfa9b 100644
--- a/drivers/iio/multiplexer/iio-mux.c
+++ b/drivers/iio/multiplexer/iio-mux.c
@@ -10,11 +10,12 @@
 #include <linux/err.h>
 #include <linux/iio/consumer.h>
 #include <linux/iio/iio.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/mux/consumer.h>
-#include <linux/of.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 
 struct mux_ext_info_cache {
 	char *data;
@@ -33,6 +34,7 @@ struct mux {
 	struct iio_chan_spec *chan;
 	struct iio_chan_spec_ext_info *ext_info;
 	struct mux_child *child;
+	u32 delay_us;
 };
 
 static int iio_mux_select(struct mux *mux, int idx)
@@ -42,7 +44,8 @@ static int iio_mux_select(struct mux *mux, int idx)
 	int ret;
 	int i;
 
-	ret = mux_control_select(mux->control, chan->channel);
+	ret = mux_control_select_delay(mux->control, chan->channel,
+				       mux->delay_us);
 	if (ret < 0) {
 		mux->cached_state = -1;
 		return ret;
@@ -322,43 +325,25 @@ static int mux_configure_channel(struct device *dev, struct mux *mux,
 	return 0;
 }
 
-/*
- * Same as of_property_for_each_string(), but also keeps track of the
- * index of each string.
- */
-#define of_property_for_each_string_index(np, propname, prop, s, i)	\
-	for (prop = of_find_property(np, propname, NULL),		\
-	     s = of_prop_next_string(prop, NULL),			\
-	     i = 0;							\
-	     s;								\
-	     s = of_prop_next_string(prop, s),				\
-	     i++)
-
 static int mux_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *np = pdev->dev.of_node;
 	struct iio_dev *indio_dev;
 	struct iio_channel *parent;
 	struct mux *mux;
-	struct property *prop;
-	const char *label;
+	const char **labels;
+	int all_children;
+	int children;
 	u32 state;
 	int sizeof_ext_info;
-	int children;
 	int sizeof_priv;
 	int i;
 	int ret;
 
-	if (!np)
-		return -ENODEV;
-
 	parent = devm_iio_channel_get(dev, "parent");
-	if (IS_ERR(parent)) {
-		if (PTR_ERR(parent) != -EPROBE_DEFER)
-			dev_err(dev, "failed to get parent channel\n");
-		return PTR_ERR(parent);
-	}
+	if (IS_ERR(parent))
+		return dev_err_probe(dev, PTR_ERR(parent),
+				     "failed to get parent channel\n");
 
 	sizeof_ext_info = iio_get_channel_ext_info_count(parent);
 	if (sizeof_ext_info) {
@@ -366,9 +351,21 @@ static int mux_probe(struct platform_device *pdev)
 		sizeof_ext_info *= sizeof(*mux->ext_info);
 	}
 
+	all_children = device_property_string_array_count(dev, "channels");
+	if (all_children < 0)
+		return all_children;
+
+	labels = devm_kmalloc_array(dev, all_children, sizeof(*labels), GFP_KERNEL);
+	if (!labels)
+		return -ENOMEM;
+
+	ret = device_property_read_string_array(dev, "channels", labels, all_children);
+	if (ret < 0)
+		return ret;
+
 	children = 0;
-	of_property_for_each_string(np, "channels", prop, label) {
-		if (*label)
+	for (state = 0; state < all_children; state++) {
+		if (*labels[state])
 			children++;
 	}
 	if (children <= 0) {
@@ -394,8 +391,10 @@ static int mux_probe(struct platform_device *pdev)
 	mux->parent = parent;
 	mux->cached_state = -1;
 
+	mux->delay_us = 0;
+	device_property_read_u32(dev, "settle-time-us", &mux->delay_us);
+
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &mux_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mux->chan;
@@ -424,11 +423,11 @@ static int mux_probe(struct platform_device *pdev)
 	}
 
 	i = 0;
-	of_property_for_each_string_index(np, "channels", prop, label, state) {
-		if (!*label)
+	for (state = 0; state < all_children; state++) {
+		if (!*labels[state])
 			continue;
 
-		ret = mux_configure_channel(dev, mux, state, label, i++);
+		ret = mux_configure_channel(dev, mux, state, labels[state], i++);
 		if (ret < 0)
 			return ret;
 	}
diff --git a/drivers/iio/orientation/Kconfig b/drivers/iio/orientation/Kconfig
index a505583cc2fd..396cbbb867f4 100644
--- a/drivers/iio/orientation/Kconfig
+++ b/drivers/iio/orientation/Kconfig
@@ -9,7 +9,6 @@ menu "Inclinometer sensors"
 config HID_SENSOR_INCLINOMETER_3D
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Inclinometer 3D"
@@ -20,7 +19,6 @@ config HID_SENSOR_INCLINOMETER_3D
 config HID_SENSOR_DEVICE_ROTATION
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID Device Rotation"
diff --git a/drivers/iio/orientation/hid-sensor-incl-3d.c b/drivers/iio/orientation/hid-sensor-incl-3d.c
index 00af68764cda..ba5b581d5b25 100644
--- a/drivers/iio/orientation/hid-sensor-incl-3d.c
+++ b/drivers/iio/orientation/hid-sensor-incl-3d.c
@@ -7,16 +7,11 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 enum incl_3d_channel {
@@ -26,15 +21,21 @@ enum incl_3d_channel {
 	INCLI_3D_CHANNEL_MAX,
 };
 
+#define CHANNEL_SCAN_INDEX_TIMESTAMP INCLI_3D_CHANNEL_MAX
+
 struct incl_3d_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info incl[INCLI_3D_CHANNEL_MAX];
-	u32 incl_val[INCLI_3D_CHANNEL_MAX];
+	struct {
+		u32 incl_val[INCLI_3D_CHANNEL_MAX];
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
 };
 
 static const u32 incl_3d_addresses[INCLI_3D_CHANNEL_MAX] = {
@@ -43,6 +44,11 @@ static const u32 incl_3d_addresses[INCLI_3D_CHANNEL_MAX] = {
 	HID_USAGE_SENSOR_ORIENT_TILT_Z
 };
 
+static const u32 incl_3d_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ORIENTATION,
+	HID_USAGE_SENSOR_ORIENT_TILT,
+};
+
 /* Channel definitions */
 static const struct iio_chan_spec incl_3d_channels[] = {
 	{
@@ -75,7 +81,8 @@ static const struct iio_chan_spec incl_3d_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_Z,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP),
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -180,13 +187,6 @@ static const struct iio_info incl_3d_info = {
 	.write_raw = &incl_3d_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, (u8 *)data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int incl_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -196,10 +196,16 @@ static int incl_3d_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct incl_3d_state *incl_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "incl_3d_proc_event\n");
-	if (atomic_read(&incl_state->common_attributes.data_ready))
-		hid_sensor_push_data(indio_dev,
-				(u8 *)incl_state->incl_val,
-				sizeof(incl_state->incl_val));
+	if (atomic_read(&incl_state->common_attributes.data_ready)) {
+		if (!incl_state->timestamp)
+			incl_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev,
+						   &incl_state->scan,
+						   incl_state->timestamp);
+
+		incl_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -216,13 +222,18 @@ static int incl_3d_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_ORIENT_TILT_X:
-		incl_state->incl_val[CHANNEL_SCAN_INDEX_X] = *(u32 *)raw_data;
+		incl_state->scan.incl_val[CHANNEL_SCAN_INDEX_X] = *(u32 *)raw_data;
 	break;
 	case HID_USAGE_SENSOR_ORIENT_TILT_Y:
-		incl_state->incl_val[CHANNEL_SCAN_INDEX_Y] = *(u32 *)raw_data;
+		incl_state->scan.incl_val[CHANNEL_SCAN_INDEX_Y] = *(u32 *)raw_data;
 	break;
 	case HID_USAGE_SENSOR_ORIENT_TILT_Z:
-		incl_state->incl_val[CHANNEL_SCAN_INDEX_Z] = *(u32 *)raw_data;
+		incl_state->scan.incl_val[CHANNEL_SCAN_INDEX_Z] = *(u32 *)raw_data;
+	break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		incl_state->timestamp =
+			hid_sensor_convert_timestamp(&incl_state->common_attributes,
+						     *(s64 *)raw_data);
 	break;
 	default:
 		ret = -EINVAL;
@@ -282,17 +293,6 @@ static int incl_3d_parse_report(struct platform_device *pdev,
 				&st->incl[CHANNEL_SCAN_INDEX_X],
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ORIENTATION,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
 	return ret;
 }
 
@@ -318,14 +318,16 @@ static int hid_incl_3d_probe(struct platform_device *pdev)
 
 	ret = hid_sensor_parse_common_attributes(hsdev,
 				HID_USAGE_SENSOR_INCLINOMETER_3D,
-				&incl_state->common_attributes);
+				&incl_state->common_attributes,
+				incl_3d_sensitivity_addresses,
+				ARRAY_SIZE(incl_3d_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
 
-	indio_dev->channels = kmemdup(incl_3d_channels,
-				      sizeof(incl_3d_channels), GFP_KERNEL);
+	indio_dev->channels = devm_kmemdup(&pdev->dev, incl_3d_channels,
+					   sizeof(incl_3d_channels), GFP_KERNEL);
 	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
 		return -ENOMEM;
@@ -337,27 +339,21 @@ static int hid_incl_3d_probe(struct platform_device *pdev)
 				   incl_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
-		goto error_free_dev_mem;
+		return ret;
 	}
 
 	indio_dev->num_channels = ARRAY_SIZE(incl_3d_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &incl_3d_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&incl_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&incl_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -382,11 +378,7 @@ static int hid_incl_3d_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&incl_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &incl_state->common_attributes);
 	return ret;
 }
 
@@ -399,9 +391,7 @@ static int hid_incl_3d_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_INCLINOMETER_3D);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&incl_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &incl_state->common_attributes);
 
 	return 0;
 }
@@ -429,3 +419,4 @@ module_platform_driver(hid_incl_3d_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Inclinometer 3D");
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/orientation/hid-sensor-rotation.c b/drivers/iio/orientation/hid-sensor-rotation.c
index 64ae7d04a200..a033699910e8 100644
--- a/drivers/iio/orientation/hid-sensor-rotation.c
+++ b/drivers/iio/orientation/hid-sensor-rotation.c
@@ -7,26 +7,31 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
 struct dev_rot_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info quaternion;
-	u32 sampled_vals[4];
+	struct {
+		s32 sampled_vals[4] __aligned(16);
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
+};
+
+static const u32 rotation_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ORIENTATION,
+	HID_USAGE_SENSOR_ORIENT_QUATERNION,
 };
 
 /* Channel definitions */
@@ -39,8 +44,10 @@ static const struct iio_chan_spec dev_rot_channels[] = {
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 					BIT(IIO_CHAN_INFO_OFFSET) |
 					BIT(IIO_CHAN_INFO_SCALE) |
-					BIT(IIO_CHAN_INFO_HYSTERESIS)
-	}
+					BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = 0
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(1)
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -72,7 +79,7 @@ static int dev_rot_read_raw(struct iio_dev *indio_dev,
 	case IIO_CHAN_INFO_RAW:
 		if (size >= 4) {
 			for (i = 0; i < 4; ++i)
-				vals[i] = rot_state->sampled_vals[i];
+				vals[i] = rot_state->scan.sampled_vals[i];
 			ret_type = IIO_VAL_INT_MULTIPLE;
 			*val_len =  4;
 		} else
@@ -134,15 +141,6 @@ static const struct iio_info dev_rot_info = {
 	.write_raw = &dev_rot_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, u8 *data, int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data >>\n");
-	iio_push_to_buffers(indio_dev, (u8 *)data);
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data <<\n");
-
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int dev_rot_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -152,10 +150,15 @@ static int dev_rot_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct dev_rot_state *rot_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "dev_rot_proc_event\n");
-	if (atomic_read(&rot_state->common_attributes.data_ready))
-		hid_sensor_push_data(indio_dev,
-				(u8 *)rot_state->sampled_vals,
-				sizeof(rot_state->sampled_vals));
+	if (atomic_read(&rot_state->common_attributes.data_ready)) {
+		if (!rot_state->timestamp)
+			rot_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &rot_state->scan,
+						   rot_state->timestamp);
+
+		rot_state->timestamp = 0;
+	}
 
 	return 0;
 }
@@ -170,10 +173,21 @@ static int dev_rot_capture_sample(struct hid_sensor_hub_device *hsdev,
 	struct dev_rot_state *rot_state = iio_priv(indio_dev);
 
 	if (usage_id == HID_USAGE_SENSOR_ORIENT_QUATERNION) {
-		memcpy(rot_state->sampled_vals, raw_data,
-					sizeof(rot_state->sampled_vals));
+		if (raw_len / 4 == sizeof(s16)) {
+			rot_state->scan.sampled_vals[0] = ((s16 *)raw_data)[0];
+			rot_state->scan.sampled_vals[1] = ((s16 *)raw_data)[1];
+			rot_state->scan.sampled_vals[2] = ((s16 *)raw_data)[2];
+			rot_state->scan.sampled_vals[3] = ((s16 *)raw_data)[3];
+		} else {
+			memcpy(&rot_state->scan.sampled_vals, raw_data,
+			       sizeof(rot_state->scan.sampled_vals));
+		}
+
 		dev_dbg(&indio_dev->dev, "Recd Quat len:%zu::%zu\n", raw_len,
-					sizeof(rot_state->sampled_vals));
+			sizeof(rot_state->scan.sampled_vals));
+	} else if (usage_id == HID_USAGE_SENSOR_TIME_TIMESTAMP) {
+		rot_state->timestamp = hid_sensor_convert_timestamp(&rot_state->common_attributes,
+								    *(s64 *)raw_data);
 	}
 
 	return 0;
@@ -210,18 +224,6 @@ static int dev_rot_parse_report(struct platform_device *pdev,
 				&st->quaternion,
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ORIENTATION,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
-
 	return 0;
 }
 
@@ -259,8 +261,11 @@ static int hid_dev_rot_probe(struct platform_device *pdev)
 		return -EINVAL;
 	}
 
-	ret = hid_sensor_parse_common_attributes(hsdev, hsdev->usage,
-				&rot_state->common_attributes);
+	ret = hid_sensor_parse_common_attributes(hsdev,
+						 hsdev->usage,
+						 &rot_state->common_attributes,
+						 rotation_sensitivity_addresses,
+						 ARRAY_SIZE(rotation_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
@@ -283,23 +288,17 @@ static int hid_dev_rot_probe(struct platform_device *pdev)
 	}
 
 	indio_dev->num_channels = ARRAY_SIZE(dev_rot_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &dev_rot_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		return ret;
-	}
 	atomic_set(&rot_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 					&rot_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -323,9 +322,7 @@ static int hid_dev_rot_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&rot_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &rot_state->common_attributes);
 	return ret;
 }
 
@@ -338,8 +335,7 @@ static int hid_dev_rot_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, hsdev->usage);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&rot_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
+	hid_sensor_remove_trigger(indio_dev, &rot_state->common_attributes);
 
 	return 0;
 }
@@ -375,3 +371,4 @@ module_platform_driver(hid_dev_rot_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Device Rotation");
 MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/position/Kconfig b/drivers/iio/position/Kconfig
new file mode 100644
index 000000000000..1576a6380b53
--- /dev/null
+++ b/drivers/iio/position/Kconfig
@@ -0,0 +1,35 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Linear and angular position sensors
+#
+# When adding new entries keep the list in alphabetical order
+
+menu "Linear and angular position sensors"
+
+config IQS624_POS
+	tristate "Azoteq IQS624/625 angular position sensors"
+	depends on MFD_IQS62X || COMPILE_TEST
+	help
+	  Say Y here if you want to build support for the Azoteq IQS624
+	  and IQS625 angular position sensors.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called iqs624-pos.
+
+config HID_SENSOR_CUSTOM_INTEL_HINGE
+	depends on HID_SENSOR_HUB
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select HID_SENSOR_IIO_COMMON
+	select HID_SENSOR_IIO_TRIGGER
+	tristate "HID Hinge"
+	help
+	  This sensor present three angles, hinge angel, screen angles
+	  and keyboard angle respect to horizon (ground).
+	  Say yes here to build support for the HID custom
+	  intel hinge sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called hid-sensor-custom-hinge.
+
+endmenu
diff --git a/drivers/iio/position/Makefile b/drivers/iio/position/Makefile
new file mode 100644
index 000000000000..d70902f2979d
--- /dev/null
+++ b/drivers/iio/position/Makefile
@@ -0,0 +1,8 @@
+#
+# Makefile for IIO linear and angular position sensors
+#
+
+# When adding new entries keep the list in alphabetical order
+
+obj-$(CONFIG_HID_SENSOR_CUSTOM_INTEL_HINGE) += hid-sensor-custom-intel-hinge.o
+obj-$(CONFIG_IQS624_POS)	+= iqs624-pos.o
diff --git a/drivers/iio/position/hid-sensor-custom-intel-hinge.c b/drivers/iio/position/hid-sensor-custom-intel-hinge.c
new file mode 100644
index 000000000000..07c30d217255
--- /dev/null
+++ b/drivers/iio/position/hid-sensor-custom-intel-hinge.c
@@ -0,0 +1,381 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * HID Sensors Driver
+ * Copyright (c) 2020, Intel Corporation.
+ */
+#include <linux/hid-sensor-hub.h>
+#include <linux/iio/buffer.h>
+#include <linux/iio/iio.h>
+#include <linux/platform_device.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+
+#include "../common/hid-sensors/hid-sensor-trigger.h"
+
+enum hinge_channel {
+	CHANNEL_SCAN_INDEX_HINGE_ANGLE,
+	CHANNEL_SCAN_INDEX_SCREEN_ANGLE,
+	CHANNEL_SCAN_INDEX_KEYBOARD_ANGLE,
+	CHANNEL_SCAN_INDEX_MAX,
+};
+
+#define CHANNEL_SCAN_INDEX_TIMESTAMP CHANNEL_SCAN_INDEX_MAX
+
+static const u32 hinge_addresses[CHANNEL_SCAN_INDEX_MAX] = {
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1),
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(2),
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(3)
+};
+
+static const char *const hinge_labels[CHANNEL_SCAN_INDEX_MAX] = { "hinge",
+								  "screen",
+								  "keyboard" };
+
+struct hinge_state {
+	struct iio_dev *indio_dev;
+	struct hid_sensor_hub_attribute_info hinge[CHANNEL_SCAN_INDEX_MAX];
+	struct hid_sensor_hub_callbacks callbacks;
+	struct hid_sensor_common common_attributes;
+	const char *labels[CHANNEL_SCAN_INDEX_MAX];
+	struct {
+		u32 hinge_val[3];
+		u64 timestamp __aligned(8);
+	} scan;
+
+	int scale_pre_decml;
+	int scale_post_decml;
+	int scale_precision;
+	int value_offset;
+	u64 timestamp;
+};
+
+static const u32 hinge_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1),
+};
+
+/* Channel definitions */
+static const struct iio_chan_spec hinge_channels[] = {
+	{
+		.type = IIO_ANGL,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type =
+			BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = CHANNEL_SCAN_INDEX_HINGE_ANGLE,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 32,
+		},
+	}, {
+		.type = IIO_ANGL,
+		.indexed = 1,
+		.channel = 1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type =
+			BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = CHANNEL_SCAN_INDEX_SCREEN_ANGLE,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 32,
+		},
+	}, {
+		.type = IIO_ANGL,
+		.indexed = 1,
+		.channel = 2,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.info_mask_shared_by_type =
+			BIT(IIO_CHAN_INFO_OFFSET) | BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_SAMP_FREQ) | BIT(IIO_CHAN_INFO_HYSTERESIS),
+		.scan_index = CHANNEL_SCAN_INDEX_KEYBOARD_ANGLE,
+		.scan_type = {
+			.sign = 's',
+			.storagebits = 32,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
+};
+
+/* Adjust channel real bits based on report descriptor */
+static void hinge_adjust_channel_realbits(struct iio_chan_spec *channels,
+					  int channel, int size)
+{
+	channels[channel].scan_type.realbits = size * 8;
+}
+
+/* Channel read_raw handler */
+static int hinge_read_raw(struct iio_dev *indio_dev,
+			  struct iio_chan_spec const *chan, int *val, int *val2,
+			  long mask)
+{
+	struct hinge_state *st = iio_priv(indio_dev);
+	struct hid_sensor_hub_device *hsdev;
+	int report_id;
+	s32 min;
+
+	hsdev = st->common_attributes.hsdev;
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		hid_sensor_power_state(&st->common_attributes, true);
+		report_id = st->hinge[chan->scan_index].report_id;
+		min = st->hinge[chan->scan_index].logical_minimum;
+		if (report_id < 0) {
+			hid_sensor_power_state(&st->common_attributes, false);
+			return -EINVAL;
+		}
+
+		*val = sensor_hub_input_attr_get_raw_value(st->common_attributes.hsdev,
+							   hsdev->usage,
+							   hinge_addresses[chan->scan_index],
+							   report_id,
+							   SENSOR_HUB_SYNC, min < 0);
+
+		hid_sensor_power_state(&st->common_attributes, false);
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		*val = st->scale_pre_decml;
+		*val2 = st->scale_post_decml;
+		return st->scale_precision;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = st->value_offset;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return hid_sensor_read_samp_freq_value(&st->common_attributes,
+						       val, val2);
+	case IIO_CHAN_INFO_HYSTERESIS:
+		return hid_sensor_read_raw_hyst_value(&st->common_attributes,
+						      val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+/* Channel write_raw handler */
+static int hinge_write_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan, int val, int val2,
+			   long mask)
+{
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return hid_sensor_write_samp_freq_value(&st->common_attributes,
+							val, val2);
+	case IIO_CHAN_INFO_HYSTERESIS:
+		return hid_sensor_write_raw_hyst_value(&st->common_attributes,
+						       val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int hinge_read_label(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan, char *label)
+{
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	return sprintf(label, "%s\n", st->labels[chan->channel]);
+}
+
+static const struct iio_info hinge_info = {
+	.read_raw = hinge_read_raw,
+	.write_raw = hinge_write_raw,
+	.read_label = hinge_read_label,
+};
+
+/*
+ * Callback handler to send event after all samples are received
+ * and captured.
+ */
+static int hinge_proc_event(struct hid_sensor_hub_device *hsdev,
+			    unsigned int usage_id, void *priv)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(priv);
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	if (atomic_read(&st->common_attributes.data_ready)) {
+		if (!st->timestamp)
+			st->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(indio_dev, &st->scan,
+						   st->timestamp);
+
+		st->timestamp = 0;
+	}
+	return 0;
+}
+
+/* Capture samples in local storage */
+static int hinge_capture_sample(struct hid_sensor_hub_device *hsdev,
+				unsigned int usage_id, size_t raw_len,
+				char *raw_data, void *priv)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(priv);
+	struct hinge_state *st = iio_priv(indio_dev);
+	int offset;
+
+	switch (usage_id) {
+	case HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1):
+	case HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(2):
+	case HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(3):
+		offset = usage_id - HID_USAGE_SENSOR_DATA_FIELD_CUSTOM_VALUE(1);
+		st->scan.hinge_val[offset] = *(u32 *)raw_data;
+		return 0;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		st->timestamp = hid_sensor_convert_timestamp(&st->common_attributes,
+							     *(int64_t *)raw_data);
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+/* Parse report which is specific to an usage id */
+static int hinge_parse_report(struct platform_device *pdev,
+			      struct hid_sensor_hub_device *hsdev,
+			      struct iio_chan_spec *channels,
+			      unsigned int usage_id, struct hinge_state *st)
+{
+	int ret;
+	int i;
+
+	for (i = 0; i < CHANNEL_SCAN_INDEX_MAX; ++i) {
+		ret = sensor_hub_input_get_attribute_info(hsdev,
+							  HID_INPUT_REPORT,
+							  usage_id,
+							  hinge_addresses[i],
+							  &st->hinge[i]);
+		if (ret < 0)
+			return ret;
+
+		hinge_adjust_channel_realbits(channels, i, st->hinge[i].size);
+	}
+
+	st->scale_precision = hid_sensor_format_scale(HID_USAGE_SENSOR_HINGE,
+			&st->hinge[CHANNEL_SCAN_INDEX_HINGE_ANGLE],
+			&st->scale_pre_decml, &st->scale_post_decml);
+
+	return ret;
+}
+
+/* Function to initialize the processing for usage id */
+static int hid_hinge_probe(struct platform_device *pdev)
+{
+	struct hinge_state *st;
+	struct iio_dev *indio_dev;
+	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+	int ret;
+	int i;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	platform_set_drvdata(pdev, indio_dev);
+
+	st = iio_priv(indio_dev);
+	st->common_attributes.hsdev = hsdev;
+	st->common_attributes.pdev = pdev;
+	st->indio_dev = indio_dev;
+	for (i = 0; i < CHANNEL_SCAN_INDEX_MAX; i++)
+		st->labels[i] = hinge_labels[i];
+
+	ret = hid_sensor_parse_common_attributes(hsdev, hsdev->usage,
+						 &st->common_attributes,
+						 hinge_sensitivity_addresses,
+						 ARRAY_SIZE(hinge_sensitivity_addresses));
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup common attributes\n");
+		return ret;
+	}
+
+	indio_dev->num_channels = ARRAY_SIZE(hinge_channels);
+	indio_dev->channels = devm_kmemdup(&indio_dev->dev, hinge_channels,
+					   sizeof(hinge_channels), GFP_KERNEL);
+	if (!indio_dev->channels)
+		return -ENOMEM;
+
+	ret = hinge_parse_report(pdev, hsdev,
+				 (struct iio_chan_spec *)indio_dev->channels,
+				 hsdev->usage, st);
+	if (ret) {
+		dev_err(&pdev->dev, "failed to setup attributes\n");
+		return ret;
+	}
+
+	indio_dev->info = &hinge_info;
+	indio_dev->name = "hinge";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	atomic_set(&st->common_attributes.data_ready, 0);
+	ret = hid_sensor_setup_trigger(indio_dev, indio_dev->name,
+				       &st->common_attributes);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "trigger setup failed\n");
+		return ret;
+	}
+
+	st->callbacks.send_event = hinge_proc_event;
+	st->callbacks.capture_sample = hinge_capture_sample;
+	st->callbacks.pdev = pdev;
+	ret = sensor_hub_register_callback(hsdev, hsdev->usage, &st->callbacks);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "callback reg failed\n");
+		goto error_remove_trigger;
+	}
+
+	ret = iio_device_register(indio_dev);
+	if (ret) {
+		dev_err(&pdev->dev, "device register failed\n");
+		goto error_remove_callback;
+	}
+
+	return ret;
+
+error_remove_callback:
+	sensor_hub_remove_callback(hsdev, hsdev->usage);
+error_remove_trigger:
+	hid_sensor_remove_trigger(indio_dev, &st->common_attributes);
+	return ret;
+}
+
+/* Function to deinitialize the processing for usage id */
+static int hid_hinge_remove(struct platform_device *pdev)
+{
+	struct hid_sensor_hub_device *hsdev = pdev->dev.platform_data;
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct hinge_state *st = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+	sensor_hub_remove_callback(hsdev, hsdev->usage);
+	hid_sensor_remove_trigger(indio_dev, &st->common_attributes);
+
+	return 0;
+}
+
+static const struct platform_device_id hid_hinge_ids[] = {
+	{
+		/* Format: HID-SENSOR-INT-usage_id_in_hex_lowercase */
+		.name = "HID-SENSOR-INT-020b",
+	},
+	{ /* sentinel */ }
+};
+MODULE_DEVICE_TABLE(platform, hid_hinge_ids);
+
+static struct platform_driver hid_hinge_platform_driver = {
+	.id_table = hid_hinge_ids,
+	.driver = {
+		.name	= KBUILD_MODNAME,
+		.pm	= &hid_sensor_pm_ops,
+	},
+	.probe		= hid_hinge_probe,
+	.remove		= hid_hinge_remove,
+};
+module_platform_driver(hid_hinge_platform_driver);
+
+MODULE_DESCRIPTION("HID Sensor INTEL Hinge");
+MODULE_AUTHOR("Ye Xiang <xiang.ye@intel.com>");
+MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/position/iqs624-pos.c b/drivers/iio/position/iqs624-pos.c
new file mode 100644
index 000000000000..4d7452314209
--- /dev/null
+++ b/drivers/iio/position/iqs624-pos.c
@@ -0,0 +1,285 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Azoteq IQS624/625 Angular Position Sensors
+ *
+ * Copyright (C) 2019 Jeff LaBundy <jeff@labundy.com>
+ */
+
+#include <linux/device.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/kernel.h>
+#include <linux/mfd/iqs62x.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define IQS624_POS_DEG_OUT			0x16
+
+#define IQS624_POS_SCALE1			(314159 / 180)
+#define IQS624_POS_SCALE2			100000
+
+struct iqs624_pos_private {
+	struct iqs62x_core *iqs62x;
+	struct iio_dev *indio_dev;
+	struct notifier_block notifier;
+	struct mutex lock;
+	bool angle_en;
+	u16 angle;
+};
+
+static int iqs624_pos_angle_en(struct iqs62x_core *iqs62x, bool angle_en)
+{
+	unsigned int event_mask = IQS624_HALL_UI_WHL_EVENT;
+
+	/*
+	 * The IQS625 reports angular position in the form of coarse intervals,
+	 * so only interval change events are unmasked. Conversely, the IQS624
+	 * reports angular position down to one degree of resolution, so wheel
+	 * movement events are unmasked instead.
+	 */
+	if (iqs62x->dev_desc->prod_num == IQS625_PROD_NUM)
+		event_mask = IQS624_HALL_UI_INT_EVENT;
+
+	return regmap_update_bits(iqs62x->regmap, IQS624_HALL_UI, event_mask,
+				  angle_en ? 0 : 0xFF);
+}
+
+static int iqs624_pos_notifier(struct notifier_block *notifier,
+			       unsigned long event_flags, void *context)
+{
+	struct iqs62x_event_data *event_data = context;
+	struct iqs624_pos_private *iqs624_pos;
+	struct iqs62x_core *iqs62x;
+	struct iio_dev *indio_dev;
+	u16 angle = event_data->ui_data;
+	s64 timestamp;
+	int ret;
+
+	iqs624_pos = container_of(notifier, struct iqs624_pos_private,
+				  notifier);
+	indio_dev = iqs624_pos->indio_dev;
+	timestamp = iio_get_time_ns(indio_dev);
+
+	iqs62x = iqs624_pos->iqs62x;
+	if (iqs62x->dev_desc->prod_num == IQS625_PROD_NUM)
+		angle = event_data->interval;
+
+	mutex_lock(&iqs624_pos->lock);
+
+	if (event_flags & BIT(IQS62X_EVENT_SYS_RESET)) {
+		ret = iqs624_pos_angle_en(iqs62x, iqs624_pos->angle_en);
+		if (ret) {
+			dev_err(indio_dev->dev.parent,
+				"Failed to re-initialize device: %d\n", ret);
+			ret = NOTIFY_BAD;
+		} else {
+			ret = NOTIFY_OK;
+		}
+	} else if (iqs624_pos->angle_en && (angle != iqs624_pos->angle)) {
+		iio_push_event(indio_dev,
+			       IIO_UNMOD_EVENT_CODE(IIO_ANGL, 0,
+						    IIO_EV_TYPE_CHANGE,
+						    IIO_EV_DIR_NONE),
+			       timestamp);
+
+		iqs624_pos->angle = angle;
+		ret = NOTIFY_OK;
+	} else {
+		ret = NOTIFY_DONE;
+	}
+
+	mutex_unlock(&iqs624_pos->lock);
+
+	return ret;
+}
+
+static void iqs624_pos_notifier_unregister(void *context)
+{
+	struct iqs624_pos_private *iqs624_pos = context;
+	struct iio_dev *indio_dev = iqs624_pos->indio_dev;
+	int ret;
+
+	ret = blocking_notifier_chain_unregister(&iqs624_pos->iqs62x->nh,
+						 &iqs624_pos->notifier);
+	if (ret)
+		dev_err(indio_dev->dev.parent,
+			"Failed to unregister notifier: %d\n", ret);
+}
+
+static int iqs624_pos_angle_get(struct iqs62x_core *iqs62x, unsigned int *val)
+{
+	int ret;
+	__le16 val_buf;
+
+	if (iqs62x->dev_desc->prod_num == IQS625_PROD_NUM)
+		return regmap_read(iqs62x->regmap, iqs62x->dev_desc->interval,
+				   val);
+
+	ret = regmap_raw_read(iqs62x->regmap, IQS624_POS_DEG_OUT, &val_buf,
+			      sizeof(val_buf));
+	if (ret)
+		return ret;
+
+	*val = le16_to_cpu(val_buf);
+
+	return 0;
+}
+
+static int iqs624_pos_read_raw(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       int *val, int *val2, long mask)
+{
+	struct iqs624_pos_private *iqs624_pos = iio_priv(indio_dev);
+	struct iqs62x_core *iqs62x = iqs624_pos->iqs62x;
+	unsigned int scale = 1;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iqs624_pos_angle_get(iqs62x, val);
+		if (ret)
+			return ret;
+
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		if (iqs62x->dev_desc->prod_num == IQS625_PROD_NUM) {
+			ret = regmap_read(iqs62x->regmap, IQS624_INTERVAL_DIV,
+					  &scale);
+			if (ret)
+				return ret;
+		}
+
+		*val = scale * IQS624_POS_SCALE1;
+		*val2 = IQS624_POS_SCALE2;
+		return IIO_VAL_FRACTIONAL;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int iqs624_pos_read_event_config(struct iio_dev *indio_dev,
+					const struct iio_chan_spec *chan,
+					enum iio_event_type type,
+					enum iio_event_direction dir)
+{
+	struct iqs624_pos_private *iqs624_pos = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&iqs624_pos->lock);
+	ret = iqs624_pos->angle_en;
+	mutex_unlock(&iqs624_pos->lock);
+
+	return ret;
+}
+
+static int iqs624_pos_write_event_config(struct iio_dev *indio_dev,
+					 const struct iio_chan_spec *chan,
+					 enum iio_event_type type,
+					 enum iio_event_direction dir,
+					 int state)
+{
+	struct iqs624_pos_private *iqs624_pos = iio_priv(indio_dev);
+	struct iqs62x_core *iqs62x = iqs624_pos->iqs62x;
+	unsigned int val;
+	int ret;
+
+	mutex_lock(&iqs624_pos->lock);
+
+	ret = iqs624_pos_angle_get(iqs62x, &val);
+	if (ret)
+		goto err_mutex;
+
+	ret = iqs624_pos_angle_en(iqs62x, state);
+	if (ret)
+		goto err_mutex;
+
+	iqs624_pos->angle = val;
+	iqs624_pos->angle_en = state;
+
+err_mutex:
+	mutex_unlock(&iqs624_pos->lock);
+
+	return ret;
+}
+
+static const struct iio_info iqs624_pos_info = {
+	.read_raw = &iqs624_pos_read_raw,
+	.read_event_config = iqs624_pos_read_event_config,
+	.write_event_config = iqs624_pos_write_event_config,
+};
+
+static const struct iio_event_spec iqs624_pos_events[] = {
+	{
+		.type = IIO_EV_TYPE_CHANGE,
+		.dir = IIO_EV_DIR_NONE,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec iqs624_pos_channels[] = {
+	{
+		.type = IIO_ANGL,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE),
+		.event_spec = iqs624_pos_events,
+		.num_event_specs = ARRAY_SIZE(iqs624_pos_events),
+	},
+};
+
+static int iqs624_pos_probe(struct platform_device *pdev)
+{
+	struct iqs62x_core *iqs62x = dev_get_drvdata(pdev->dev.parent);
+	struct iqs624_pos_private *iqs624_pos;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, sizeof(*iqs624_pos));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	iqs624_pos = iio_priv(indio_dev);
+	iqs624_pos->iqs62x = iqs62x;
+	iqs624_pos->indio_dev = indio_dev;
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = iqs624_pos_channels;
+	indio_dev->num_channels = ARRAY_SIZE(iqs624_pos_channels);
+	indio_dev->name = iqs62x->dev_desc->dev_name;
+	indio_dev->info = &iqs624_pos_info;
+
+	mutex_init(&iqs624_pos->lock);
+
+	iqs624_pos->notifier.notifier_call = iqs624_pos_notifier;
+	ret = blocking_notifier_chain_register(&iqs624_pos->iqs62x->nh,
+					       &iqs624_pos->notifier);
+	if (ret) {
+		dev_err(&pdev->dev, "Failed to register notifier: %d\n", ret);
+		return ret;
+	}
+
+	ret = devm_add_action_or_reset(&pdev->dev,
+				       iqs624_pos_notifier_unregister,
+				       iqs624_pos);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&pdev->dev, indio_dev);
+}
+
+static struct platform_driver iqs624_pos_platform_driver = {
+	.driver = {
+		.name = "iqs624-pos",
+	},
+	.probe = iqs624_pos_probe,
+};
+module_platform_driver(iqs624_pos_platform_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS624/625 Angular Position Sensors");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:iqs624-pos");
diff --git a/drivers/iio/potentiometer/Kconfig b/drivers/iio/potentiometer/Kconfig
index 4cac0173db8b..01dd3f858d99 100644
--- a/drivers/iio/potentiometer/Kconfig
+++ b/drivers/iio/potentiometer/Kconfig
@@ -6,6 +6,16 @@
 
 menu "Digital potentiometers"
 
+config AD5110
+	tristate "Analog Devices AD5110 and similar Digital Potentiometer driver"
+	depends on I2C
+	help
+	  Say yes here to build support for the Analog Devices AD5110, AD5112 
+	  and AD5114 digital potentiometer chip.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5110.
+
 config AD5272
 	tristate "Analog Devices AD5272 and similar Digital Potentiometer driver"
 	depends on I2C
@@ -17,11 +27,11 @@ config AD5272
 	  module will be called ad5272.
 
 config DS1803
-	tristate "Maxim Integrated DS1803 Digital Potentiometer driver"
+	tristate "Maxim Integrated DS1803 and similar Digital Potentiometer driver"
 	depends on I2C
 	help
-	  Say yes here to build support for the Maxim Integrated DS1803
-	  digital potentiometer chip.
+	  Say yes here to build support for the Maxim Integrated DS1803 and
+	  DS3502 digital potentiometer chip.
 
 	  To compile this driver as a module, choose M here: the
 	  module will be called ds1803.
diff --git a/drivers/iio/potentiometer/Makefile b/drivers/iio/potentiometer/Makefile
index 091adf3cdd0b..5ebb8e3bbd76 100644
--- a/drivers/iio/potentiometer/Makefile
+++ b/drivers/iio/potentiometer/Makefile
@@ -4,6 +4,7 @@
 #
 
 # When adding new entries keep the list in alphabetical order
+obj-$(CONFIG_AD5110) += ad5110.o
 obj-$(CONFIG_AD5272) += ad5272.o
 obj-$(CONFIG_DS1803) += ds1803.o
 obj-$(CONFIG_MAX5432) += max5432.o
diff --git a/drivers/iio/potentiometer/ad5110.c b/drivers/iio/potentiometer/ad5110.c
new file mode 100644
index 000000000000..8fbcce482989
--- /dev/null
+++ b/drivers/iio/potentiometer/ad5110.c
@@ -0,0 +1,344 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Analog Devices AD5110 digital potentiometer driver
+ *
+ * Copyright (C) 2021 Mugilraj Dhavachelvan <dmugil2000@gmail.com>
+ *
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/AD5110_5112_5114.pdf
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+/* AD5110 commands */
+#define AD5110_EEPROM_WR	1
+#define AD5110_RDAC_WR		2
+#define AD5110_SHUTDOWN	3
+#define AD5110_RESET		4
+#define AD5110_RDAC_RD		5
+#define AD5110_EEPROM_RD	6
+
+/* AD5110_EEPROM_RD data */
+#define AD5110_WIPER_POS	0
+#define AD5110_RESISTOR_TOL	1
+
+#define AD5110_WIPER_RESISTANCE	70
+
+struct ad5110_cfg {
+	int max_pos;
+	int kohms;
+	int shift;
+};
+
+enum ad5110_type {
+	AD5110_10,
+	AD5110_80,
+	AD5112_05,
+	AD5112_10,
+	AD5112_80,
+	AD5114_10,
+	AD5114_80,
+};
+
+static const struct ad5110_cfg ad5110_cfg[] = {
+	[AD5110_10] = { .max_pos = 128, .kohms = 10 },
+	[AD5110_80] = { .max_pos = 128, .kohms = 80 },
+	[AD5112_05] = { .max_pos = 64, .kohms = 5, .shift = 1 },
+	[AD5112_10] = { .max_pos = 64, .kohms = 10, .shift = 1 },
+	[AD5112_80] = { .max_pos = 64, .kohms = 80, .shift = 1 },
+	[AD5114_10] = { .max_pos = 32, .kohms = 10, .shift = 2 },
+	[AD5114_80] = { .max_pos = 32, .kohms = 80, .shift = 2 },
+};
+
+struct ad5110_data {
+	struct i2c_client       *client;
+	s16			tol;		/* resistor tolerance */
+	bool			enable;
+	struct mutex            lock;
+	const struct ad5110_cfg	*cfg;
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	u8			buf[2] __aligned(IIO_DMA_MINALIGN);
+};
+
+static const struct iio_chan_spec ad5110_channels[] = {
+	{
+		.type = IIO_RESISTANCE,
+		.output = 1,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_OFFSET) |
+					BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_ENABLE),
+	},
+};
+
+static int ad5110_read(struct ad5110_data *data, u8 cmd, int *val)
+{
+	int ret;
+
+	mutex_lock(&data->lock);
+	data->buf[0] = cmd;
+	data->buf[1] = *val;
+
+	ret = i2c_master_send_dmasafe(data->client, data->buf, sizeof(data->buf));
+	if (ret < 0) {
+		goto error;
+	} else if (ret != sizeof(data->buf)) {
+		ret = -EIO;
+		goto error;
+	}
+
+	ret = i2c_master_recv_dmasafe(data->client, data->buf, 1);
+	if (ret < 0) {
+		goto error;
+	} else if (ret != 1) {
+		ret = -EIO;
+		goto error;
+	}
+
+	*val = data->buf[0];
+	ret = 0;
+
+error:
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int ad5110_write(struct ad5110_data *data, u8 cmd, u8 val)
+{
+	int ret;
+
+	mutex_lock(&data->lock);
+	data->buf[0] = cmd;
+	data->buf[1] = val;
+
+	ret = i2c_master_send_dmasafe(data->client, data->buf, sizeof(data->buf));
+	if (ret < 0) {
+		goto error;
+	} else if (ret != sizeof(data->buf)) {
+		ret = -EIO;
+		goto error;
+	}
+
+	ret = 0;
+
+error:
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
+static int ad5110_resistor_tol(struct ad5110_data *data, u8 cmd, int val)
+{
+	int ret;
+
+	ret = ad5110_read(data, cmd, &val);
+	if (ret)
+		return ret;
+
+	data->tol = data->cfg->kohms * (val & GENMASK(6, 0)) * 10 / 8;
+	if (!(val & BIT(7)))
+		data->tol *= -1;
+
+	return 0;
+}
+
+static ssize_t store_eeprom_show(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad5110_data *data = iio_priv(indio_dev);
+	int val = AD5110_WIPER_POS;
+	int ret;
+
+	ret = ad5110_read(data, AD5110_EEPROM_RD, &val);
+	if (ret)
+		return ret;
+
+	val = val >> data->cfg->shift;
+	return iio_format_value(buf, IIO_VAL_INT, 1, &val);
+}
+
+static ssize_t store_eeprom_store(struct device *dev,
+				   struct device_attribute *attr,
+				   const char *buf, size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ad5110_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = ad5110_write(data, AD5110_EEPROM_WR, 0);
+	if (ret) {
+		dev_err(&data->client->dev, "RDAC to EEPROM write failed\n");
+		return ret;
+	}
+
+	/* The storing of EEPROM data takes approximately 18 ms. */
+	msleep(20);
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR_RW(store_eeprom, 0);
+
+static struct attribute *ad5110_attributes[] = {
+	&iio_dev_attr_store_eeprom.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group ad5110_attribute_group = {
+	.attrs = ad5110_attributes,
+};
+
+static int ad5110_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long mask)
+{
+	struct ad5110_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = ad5110_read(data, AD5110_RDAC_RD, val);
+		if (ret)
+			return ret;
+
+		*val = *val >> data->cfg->shift;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_OFFSET:
+		*val = AD5110_WIPER_RESISTANCE * data->cfg->max_pos;
+		*val2 = 1000 * data->cfg->kohms + data->tol;
+		return IIO_VAL_FRACTIONAL;
+	case IIO_CHAN_INFO_SCALE:
+		*val = 1000 * data->cfg->kohms + data->tol;
+		*val2 = data->cfg->max_pos;
+		return IIO_VAL_FRACTIONAL;
+	case IIO_CHAN_INFO_ENABLE:
+		*val = data->enable;
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int ad5110_write_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
+{
+	struct ad5110_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		if (val > data->cfg->max_pos || val < 0)
+			return -EINVAL;
+
+		return ad5110_write(data, AD5110_RDAC_WR, val << data->cfg->shift);
+	case IIO_CHAN_INFO_ENABLE:
+		if (val < 0 || val > 1)
+			return -EINVAL;
+		if (data->enable == val)
+			return 0;
+		ret = ad5110_write(data, AD5110_SHUTDOWN, val ? 0 : 1);
+		if (ret)
+			return ret;
+		data->enable = val;
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info ad5110_info = {
+	.read_raw = ad5110_read_raw,
+	.write_raw = ad5110_write_raw,
+	.attrs = &ad5110_attribute_group,
+};
+
+#define AD5110_COMPATIBLE(of_compatible, cfg) {	\
+			.compatible = of_compatible,	\
+			.data = &ad5110_cfg[cfg],	\
+}
+
+static const struct of_device_id ad5110_of_match[] = {
+	AD5110_COMPATIBLE("adi,ad5110-10", AD5110_10),
+	AD5110_COMPATIBLE("adi,ad5110-80", AD5110_80),
+	AD5110_COMPATIBLE("adi,ad5112-05", AD5112_05),
+	AD5110_COMPATIBLE("adi,ad5112-10", AD5112_10),
+	AD5110_COMPATIBLE("adi,ad5112-80", AD5112_80),
+	AD5110_COMPATIBLE("adi,ad5114-10", AD5114_10),
+	AD5110_COMPATIBLE("adi,ad5114-80", AD5114_80),
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ad5110_of_match);
+
+static const struct i2c_device_id ad5110_id[] = {
+	{ "ad5110-10", AD5110_10 },
+	{ "ad5110-80", AD5110_80 },
+	{ "ad5112-05", AD5112_05 },
+	{ "ad5112-10", AD5112_10 },
+	{ "ad5112-80", AD5112_80 },
+	{ "ad5114-10", AD5114_10 },
+	{ "ad5114-80", AD5114_80 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, ad5110_id);
+
+static int ad5110_probe(struct i2c_client *client)
+{
+	struct device *dev = &client->dev;
+	struct iio_dev *indio_dev;
+	struct ad5110_data *data;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->client = client;
+	mutex_init(&data->lock);
+	data->enable = 1;
+	data->cfg = device_get_match_data(dev);
+
+	/* refresh RDAC register with EEPROM */
+	ret = ad5110_write(data, AD5110_RESET, 0);
+	if (ret) {
+		dev_err(dev, "Refresh RDAC with EEPROM failed\n");
+		return ret;
+	}
+
+	ret = ad5110_resistor_tol(data, AD5110_EEPROM_RD, AD5110_RESISTOR_TOL);
+	if (ret) {
+		dev_err(dev, "Read resistor tolerance failed\n");
+		return ret;
+	}
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &ad5110_info;
+	indio_dev->channels = ad5110_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ad5110_channels);
+	indio_dev->name = client->name;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+
+static struct i2c_driver ad5110_driver = {
+	.driver = {
+		.name	= "ad5110",
+		.of_match_table = ad5110_of_match,
+	},
+	.probe_new	= ad5110_probe,
+	.id_table	= ad5110_id,
+};
+module_i2c_driver(ad5110_driver);
+
+MODULE_AUTHOR("Mugilraj Dhavachelvan <dmugil2000@gmail.com>");
+MODULE_DESCRIPTION("AD5110 digital potentiometer");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/potentiometer/ad5272.c b/drivers/iio/potentiometer/ad5272.c
index 154f9a5da8bc..ed5fc0b50fe9 100644
--- a/drivers/iio/potentiometer/ad5272.c
+++ b/drivers/iio/potentiometer/ad5272.c
@@ -3,7 +3,7 @@
  * Analog Devices AD5272 digital potentiometer driver
  * Copyright (C) 2018 Phil Reid <preid@electromag.com.au>
  *
- * Datasheet: http://www.analog.com/media/en/technical-documentation/data-sheets/AD5272_5274.pdf
+ * Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/AD5272_5274.pdf
  *
  * DEVID	#Wipers	#Positions	Resistor Opts (kOhm)	i2c address
  * ad5272	1	1024		20, 50, 100		01011xx
@@ -15,6 +15,7 @@
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 
 #define  AD5272_RDAC_WR  1
 #define  AD5272_RDAC_RD  2
@@ -49,7 +50,7 @@ struct ad5272_data {
 	struct i2c_client       *client;
 	struct mutex            lock;
 	const struct ad5272_cfg *cfg;
-	u8                      buf[2] ____cacheline_aligned;
+	u8                      buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const struct iio_chan_spec ad5272_channel = {
@@ -142,13 +143,13 @@ static int ad5272_reset(struct ad5272_data *data)
 	struct gpio_desc *reset_gpio;
 
 	reset_gpio = devm_gpiod_get_optional(&data->client->dev, "reset",
-		GPIOD_OUT_LOW);
+		GPIOD_OUT_HIGH);
 	if (IS_ERR(reset_gpio))
 		return PTR_ERR(reset_gpio);
 
 	if (reset_gpio) {
 		udelay(1);
-		gpiod_set_value(reset_gpio, 1);
+		gpiod_set_value(reset_gpio, 0);
 	} else {
 		ad5272_write(data, AD5272_RESET, 0);
 	}
@@ -184,7 +185,6 @@ static int ad5272_probe(struct i2c_client *client,
 	if (ret < 0)
 		return -ENODEV;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &ad5272_info;
 	indio_dev->channels = &ad5272_channel;
 	indio_dev->num_channels = 1;
@@ -193,7 +193,6 @@ static int ad5272_probe(struct i2c_client *client,
 	return devm_iio_device_register(dev, indio_dev);
 }
 
-#if defined(CONFIG_OF)
 static const struct of_device_id ad5272_dt_ids[] = {
 	{ .compatible = "adi,ad5272-020", .data = (void *)AD5272_020 },
 	{ .compatible = "adi,ad5272-050", .data = (void *)AD5272_050 },
@@ -203,7 +202,6 @@ static const struct of_device_id ad5272_dt_ids[] = {
 	{}
 };
 MODULE_DEVICE_TABLE(of, ad5272_dt_ids);
-#endif /* CONFIG_OF */
 
 static const struct i2c_device_id ad5272_id[] = {
 	{ "ad5272-020", AD5272_020 },
@@ -218,7 +216,7 @@ MODULE_DEVICE_TABLE(i2c, ad5272_id);
 static struct i2c_driver ad5272_driver = {
 	.driver = {
 		.name	= "ad5272",
-		.of_match_table = of_match_ptr(ad5272_dt_ids),
+		.of_match_table = ad5272_dt_ids,
 	},
 	.probe		= ad5272_probe,
 	.id_table	= ad5272_id,
diff --git a/drivers/iio/potentiometer/ds1803.c b/drivers/iio/potentiometer/ds1803.c
index d0de78232a93..5c212ed7a931 100644
--- a/drivers/iio/potentiometer/ds1803.c
+++ b/drivers/iio/potentiometer/ds1803.c
@@ -1,12 +1,15 @@
 // SPDX-License-Identifier: GPL-2.0-only
 /*
- * Maxim Integrated DS1803 digital potentiometer driver
+ * Maxim Integrated DS1803 and similar digital potentiometer driver
  * Copyright (c) 2016 Slawomir Stepien
+ * Copyright (c) 2022 Jagath Jog J
  *
  * Datasheet: https://datasheets.maximintegrated.com/en/ds/DS1803.pdf
+ * Datasheet: https://datasheets.maximintegrated.com/en/ds/DS3502.pdf
  *
  * DEVID	#Wipers	#Positions	Resistor Opts (kOhm)	i2c address
  * ds1803	2	256		10, 50, 100		0101xxx
+ * ds3502	1	128		10			01010xx
  */
 
 #include <linux/err.h>
@@ -14,25 +17,28 @@
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/module.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
-#define DS1803_MAX_POS		255
-#define DS1803_WRITE(chan)	(0xa8 | ((chan) + 1))
+#define DS1803_WIPER_0         0xA9
+#define DS1803_WIPER_1         0xAA
+#define DS3502_WR_IVR          0x00
 
 enum ds1803_type {
 	DS1803_010,
 	DS1803_050,
 	DS1803_100,
+	DS3502,
 };
 
 struct ds1803_cfg {
+	int wipers;
+	int avail[3];
 	int kohms;
-};
-
-static const struct ds1803_cfg ds1803_cfg[] = {
-	[DS1803_010] = { .kohms =  10, },
-	[DS1803_050] = { .kohms =  50, },
-	[DS1803_100] = { .kohms = 100, },
+	const struct iio_chan_spec *channels;
+	u8 num_channels;
+	int (*read)(struct iio_dev *indio_dev,
+		    struct iio_chan_spec const *chan, int *val);
 };
 
 struct ds1803_data {
@@ -40,42 +46,110 @@ struct ds1803_data {
 	const struct ds1803_cfg *cfg;
 };
 
-#define DS1803_CHANNEL(ch) {					\
-	.type = IIO_RESISTANCE,					\
-	.indexed = 1,						\
-	.output = 1,						\
-	.channel = (ch),					\
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),		\
-	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),	\
+#define DS1803_CHANNEL(ch, addr) {					\
+	.type = IIO_RESISTANCE,						\
+	.indexed = 1,							\
+	.output = 1,							\
+	.channel = (ch),						\
+	.address = (addr),						\
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
+	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),		\
+	.info_mask_shared_by_type_available = BIT(IIO_CHAN_INFO_RAW),   \
 }
 
 static const struct iio_chan_spec ds1803_channels[] = {
-	DS1803_CHANNEL(0),
-	DS1803_CHANNEL(1),
+	DS1803_CHANNEL(0, DS1803_WIPER_0),
+	DS1803_CHANNEL(1, DS1803_WIPER_1),
 };
 
-static int ds1803_read_raw(struct iio_dev *indio_dev,
-			    struct iio_chan_spec const *chan,
-			    int *val, int *val2, long mask)
+static const struct iio_chan_spec ds3502_channels[] = {
+	DS1803_CHANNEL(0, DS3502_WR_IVR),
+};
+
+static int ds1803_read(struct iio_dev *indio_dev,
+		       struct iio_chan_spec const *chan,
+		       int *val)
 {
 	struct ds1803_data *data = iio_priv(indio_dev);
-	int pot = chan->channel;
 	int ret;
 	u8 result[ARRAY_SIZE(ds1803_channels)];
 
+	ret = i2c_master_recv(data->client, result, indio_dev->num_channels);
+	if (ret < 0)
+		return ret;
+
+	*val = result[chan->channel];
+	return ret;
+}
+
+static int ds3502_read(struct iio_dev *indio_dev,
+		       struct iio_chan_spec const *chan,
+		       int *val)
+{
+	struct ds1803_data *data = iio_priv(indio_dev);
+	int ret;
+
+	ret = i2c_smbus_read_byte_data(data->client, chan->address);
+	if (ret < 0)
+		return ret;
+
+	*val = ret;
+	return ret;
+}
+
+static const struct ds1803_cfg ds1803_cfg[] = {
+	[DS1803_010] = {
+		.wipers = 2,
+		.avail = { 0, 1, 255 },
+		.kohms =  10,
+		.channels = ds1803_channels,
+		.num_channels = ARRAY_SIZE(ds1803_channels),
+		.read = ds1803_read,
+	},
+	[DS1803_050] = {
+		.wipers = 2,
+		.avail = { 0, 1, 255 },
+		.kohms =  50,
+		.channels = ds1803_channels,
+		.num_channels = ARRAY_SIZE(ds1803_channels),
+		.read = ds1803_read,
+	},
+	[DS1803_100] = {
+		.wipers = 2,
+		.avail = { 0, 1, 255 },
+		.kohms = 100,
+		.channels = ds1803_channels,
+		.num_channels = ARRAY_SIZE(ds1803_channels),
+		.read = ds1803_read,
+	},
+	[DS3502] = {
+	  .wipers = 1,
+	  .avail = { 0, 1, 127 },
+	  .kohms =  10,
+	  .channels = ds3502_channels,
+	  .num_channels = ARRAY_SIZE(ds3502_channels),
+	  .read = ds3502_read,
+	},
+};
+
+static int ds1803_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2, long mask)
+{
+	struct ds1803_data *data = iio_priv(indio_dev);
+	int ret;
+
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		ret = i2c_master_recv(data->client, result,
-				indio_dev->num_channels);
+		ret = data->cfg->read(indio_dev, chan, val);
 		if (ret < 0)
 			return ret;
 
-		*val = result[pot];
 		return IIO_VAL_INT;
 
 	case IIO_CHAN_INFO_SCALE:
 		*val = 1000 * data->cfg->kohms;
-		*val2 = DS1803_MAX_POS;
+		*val2 = data->cfg->avail[2]; /* Max wiper position */
 		return IIO_VAL_FRACTIONAL;
 	}
 
@@ -83,34 +157,52 @@ static int ds1803_read_raw(struct iio_dev *indio_dev,
 }
 
 static int ds1803_write_raw(struct iio_dev *indio_dev,
-			     struct iio_chan_spec const *chan,
-			     int val, int val2, long mask)
+			    struct iio_chan_spec const *chan,
+			    int val, int val2, long mask)
 {
 	struct ds1803_data *data = iio_priv(indio_dev);
-	int pot = chan->channel;
+	u8 addr = chan->address;
+	int max_pos = data->cfg->avail[2];
 
 	if (val2 != 0)
 		return -EINVAL;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
-		if (val > DS1803_MAX_POS || val < 0)
+		if (val > max_pos || val < 0)
 			return -EINVAL;
 		break;
 	default:
 		return -EINVAL;
 	}
 
-	return i2c_smbus_write_byte_data(data->client, DS1803_WRITE(pot), val);
+	return i2c_smbus_write_byte_data(data->client, addr, val);
+}
+
+static int ds1803_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type,
+			     int *length, long mask)
+{
+	struct ds1803_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		*vals = data->cfg->avail;
+		*length = ARRAY_SIZE(data->cfg->avail);
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_RANGE;
+	}
+	return -EINVAL;
 }
 
 static const struct iio_info ds1803_info = {
 	.read_raw = ds1803_read_raw,
 	.write_raw = ds1803_write_raw,
+	.read_avail = ds1803_read_avail,
 };
 
-static int ds1803_probe(struct i2c_client *client,
-			 const struct i2c_device_id *id)
+static int ds1803_probe(struct i2c_client *client, const struct i2c_device_id *id)
 {
 	struct device *dev = &client->dev;
 	struct ds1803_data *data;
@@ -124,31 +216,32 @@ static int ds1803_probe(struct i2c_client *client,
 
 	data = iio_priv(indio_dev);
 	data->client = client;
-	data->cfg = &ds1803_cfg[id->driver_data];
+	data->cfg = device_get_match_data(dev);
+	if (!data->cfg)
+		data->cfg = &ds1803_cfg[id->driver_data];
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &ds1803_info;
-	indio_dev->channels = ds1803_channels;
-	indio_dev->num_channels = ARRAY_SIZE(ds1803_channels);
+	indio_dev->channels = data->cfg->channels;
+	indio_dev->num_channels = data->cfg->num_channels;
 	indio_dev->name = client->name;
 
 	return devm_iio_device_register(dev, indio_dev);
 }
 
-#if defined(CONFIG_OF)
 static const struct of_device_id ds1803_dt_ids[] = {
 	{ .compatible = "maxim,ds1803-010", .data = &ds1803_cfg[DS1803_010] },
 	{ .compatible = "maxim,ds1803-050", .data = &ds1803_cfg[DS1803_050] },
 	{ .compatible = "maxim,ds1803-100", .data = &ds1803_cfg[DS1803_100] },
+	{ .compatible = "maxim,ds3502", .data = &ds1803_cfg[DS3502] },
 	{}
 };
 MODULE_DEVICE_TABLE(of, ds1803_dt_ids);
-#endif /* CONFIG_OF */
 
 static const struct i2c_device_id ds1803_id[] = {
 	{ "ds1803-010", DS1803_010 },
 	{ "ds1803-050", DS1803_050 },
 	{ "ds1803-100", DS1803_100 },
+	{ "ds3502", DS3502 },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ds1803_id);
@@ -156,7 +249,7 @@ MODULE_DEVICE_TABLE(i2c, ds1803_id);
 static struct i2c_driver ds1803_driver = {
 	.driver = {
 		.name	= "ds1803",
-		.of_match_table = of_match_ptr(ds1803_dt_ids),
+		.of_match_table = ds1803_dt_ids,
 	},
 	.probe		= ds1803_probe,
 	.id_table	= ds1803_id,
@@ -165,5 +258,6 @@ static struct i2c_driver ds1803_driver = {
 module_i2c_driver(ds1803_driver);
 
 MODULE_AUTHOR("Slawomir Stepien <sst@poczta.fm>");
+MODULE_AUTHOR("Jagath Jog J <jagathjog1996@gmail.com>");
 MODULE_DESCRIPTION("DS1803 digital potentiometer");
 MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/potentiometer/max5432.c b/drivers/iio/potentiometer/max5432.c
index 641b1821fdf6..aed3b6ab82a2 100644
--- a/drivers/iio/potentiometer/max5432.c
+++ b/drivers/iio/potentiometer/max5432.c
@@ -11,8 +11,8 @@
 #include <linux/iio/iio.h>
 #include <linux/limits.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 /* All chip variants have 32 wiper positions. */
 #define MAX5432_MAX_POS 31
@@ -100,9 +100,8 @@ static int max5432_probe(struct i2c_client *client,
 
 	data = iio_priv(indio_dev);
 	data->client = client;
-	data->ohm = (unsigned long)of_device_get_match_data(dev);
+	data->ohm = (unsigned long)device_get_match_data(dev);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &max5432_info;
 	indio_dev->channels = max5432_channels;
 	indio_dev->num_channels = ARRAY_SIZE(max5432_channels);
@@ -123,7 +122,7 @@ MODULE_DEVICE_TABLE(of, max5432_dt_ids);
 static struct i2c_driver max5432_driver = {
 	.driver = {
 		.name = "max5432",
-		.of_match_table = of_match_ptr(max5432_dt_ids),
+		.of_match_table = max5432_dt_ids,
 	},
 	.probe = max5432_probe,
 };
diff --git a/drivers/iio/potentiometer/max5481.c b/drivers/iio/potentiometer/max5481.c
index 732375b6d131..b40e5ac218d7 100644
--- a/drivers/iio/potentiometer/max5481.c
+++ b/drivers/iio/potentiometer/max5481.c
@@ -4,15 +4,14 @@
  * Copyright 2016 Rockwell Collins
  *
  * Datasheet:
- * http://datasheets.maximintegrated.com/en/ds/MAX5481-MAX5484.pdf
+ * https://datasheets.maximintegrated.com/en/ds/MAX5481-MAX5484.pdf
  */
 
-#include <linux/acpi.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 
 /* write wiper reg */
@@ -45,7 +44,7 @@ static const struct max5481_cfg max5481_cfg[] = {
 struct max5481_data {
 	struct spi_device *spi;
 	const struct max5481_cfg *cfg;
-	u8 msg[3] ____cacheline_aligned;
+	u8 msg[3] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define MAX5481_CHANNEL {					\
@@ -117,7 +116,6 @@ static const struct iio_info max5481_info = {
 	.write_raw = max5481_write_raw,
 };
 
-#if defined(CONFIG_OF)
 static const struct of_device_id max5481_match[] = {
 	{ .compatible = "maxim,max5481", .data = &max5481_cfg[max5481] },
 	{ .compatible = "maxim,max5482", .data = &max5481_cfg[max5482] },
@@ -126,7 +124,11 @@ static const struct of_device_id max5481_match[] = {
 	{ }
 };
 MODULE_DEVICE_TABLE(of, max5481_match);
-#endif
+
+static void max5481_wiper_save(void *data)
+{
+	max5481_write_cmd(data, MAX5481_COPY_AB_TO_NV, 0);
+}
 
 static int max5481_probe(struct spi_device *spi)
 {
@@ -139,17 +141,15 @@ static int max5481_probe(struct spi_device *spi)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	dev_set_drvdata(&spi->dev, indio_dev);
 	data = iio_priv(indio_dev);
 
 	data->spi = spi;
 
-	data->cfg = of_device_get_match_data(&spi->dev);
+	data->cfg = device_get_match_data(&spi->dev);
 	if (!data->cfg)
 		data->cfg = &max5481_cfg[id->driver_data];
 
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	/* variant specific configuration */
@@ -162,18 +162,11 @@ static int max5481_probe(struct spi_device *spi)
 	if (ret < 0)
 		return ret;
 
-	return iio_device_register(indio_dev);
-}
-
-static int max5481_remove(struct spi_device *spi)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(&spi->dev);
-	struct max5481_data *data = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
+	ret = devm_add_action(&spi->dev, max5481_wiper_save, data);
+	if (ret < 0)
+		return ret;
 
-	/* save wiper reg to NV reg */
-	return max5481_write_cmd(data, MAX5481_COPY_AB_TO_NV, 0);
+	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
 static const struct spi_device_id max5481_id_table[] = {
@@ -185,25 +178,12 @@ static const struct spi_device_id max5481_id_table[] = {
 };
 MODULE_DEVICE_TABLE(spi, max5481_id_table);
 
-#if defined(CONFIG_ACPI)
-static const struct acpi_device_id max5481_acpi_match[] = {
-	{ "max5481", max5481 },
-	{ "max5482", max5482 },
-	{ "max5483", max5483 },
-	{ "max5484", max5484 },
-	{ }
-};
-MODULE_DEVICE_TABLE(acpi, max5481_acpi_match);
-#endif
-
 static struct spi_driver max5481_driver = {
 	.driver = {
 		.name  = "max5481",
-		.of_match_table = of_match_ptr(max5481_match),
-		.acpi_match_table = ACPI_PTR(max5481_acpi_match),
+		.of_match_table = max5481_match,
 	},
 	.probe = max5481_probe,
-	.remove = max5481_remove,
 	.id_table = max5481_id_table,
 };
 
diff --git a/drivers/iio/potentiometer/max5487.c b/drivers/iio/potentiometer/max5487.c
index 68ff806d4668..42723c996c9f 100644
--- a/drivers/iio/potentiometer/max5487.c
+++ b/drivers/iio/potentiometer/max5487.c
@@ -92,7 +92,7 @@ static int max5487_spi_probe(struct spi_device *spi)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	dev_set_drvdata(&spi->dev, indio_dev);
+	spi_set_drvdata(spi, indio_dev);
 	data = iio_priv(indio_dev);
 
 	data->spi = spi;
@@ -100,7 +100,6 @@ static int max5487_spi_probe(struct spi_device *spi)
 
 	indio_dev->info = &max5487_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = max5487_channels;
 	indio_dev->num_channels = ARRAY_SIZE(max5487_channels);
@@ -113,14 +112,17 @@ static int max5487_spi_probe(struct spi_device *spi)
 	return iio_device_register(indio_dev);
 }
 
-static int max5487_spi_remove(struct spi_device *spi)
+static void max5487_spi_remove(struct spi_device *spi)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(&spi->dev);
+	struct iio_dev *indio_dev = spi_get_drvdata(spi);
+	int ret;
 
 	iio_device_unregister(indio_dev);
 
 	/* save both wiper regs to NV regs */
-	return max5487_write_cmd(spi, MAX5487_COPY_AB_TO_NV);
+	ret = max5487_write_cmd(spi, MAX5487_COPY_AB_TO_NV);
+	if (ret)
+		dev_warn(&spi->dev, "Failed to save wiper regs to NV regs\n");
 }
 
 static const struct spi_device_id max5487_id[] = {
diff --git a/drivers/iio/potentiometer/mcp4018.c b/drivers/iio/potentiometer/mcp4018.c
index 62151b2a2b12..c0e171fec062 100644
--- a/drivers/iio/potentiometer/mcp4018.c
+++ b/drivers/iio/potentiometer/mcp4018.c
@@ -16,8 +16,8 @@
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #define MCP4018_WIPER_MAX 127
 
@@ -116,8 +116,6 @@ static const struct i2c_device_id mcp4018_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp4018_id);
 
-#ifdef CONFIG_OF
-
 #define MCP4018_COMPATIBLE(of_compatible, cfg) {	\
 	.compatible = of_compatible,			\
 	.data = &mcp4018_cfg[cfg],			\
@@ -140,8 +138,6 @@ static const struct of_device_id mcp4018_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mcp4018_of_match);
 
-#endif
-
 static int mcp4018_probe(struct i2c_client *client)
 {
 	struct device *dev = &client->dev;
@@ -161,11 +157,10 @@ static int mcp4018_probe(struct i2c_client *client)
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	data->cfg = of_device_get_match_data(dev);
+	data->cfg = device_get_match_data(dev);
 	if (!data->cfg)
 		data->cfg = &mcp4018_cfg[i2c_match_id(mcp4018_id, client)->driver_data];
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &mcp4018_info;
 	indio_dev->channels = &mcp4018_channel;
 	indio_dev->num_channels = 1;
@@ -177,7 +172,7 @@ static int mcp4018_probe(struct i2c_client *client)
 static struct i2c_driver mcp4018_driver = {
 	.driver = {
 		.name	= "mcp4018",
-		.of_match_table = of_match_ptr(mcp4018_of_match),
+		.of_match_table = mcp4018_of_match,
 	},
 	.probe_new	= mcp4018_probe,
 	.id_table	= mcp4018_id,
diff --git a/drivers/iio/potentiometer/mcp41010.c b/drivers/iio/potentiometer/mcp41010.c
index 2368b39debf5..2b73c7540209 100644
--- a/drivers/iio/potentiometer/mcp41010.c
+++ b/drivers/iio/potentiometer/mcp41010.c
@@ -5,7 +5,7 @@
  * Copyright (c) 2018 Chris Coffey <cmc@babblebit.net>
  * Based on: Slawomir Stepien's code from mcp4131.c
  *
- * Datasheet: http://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf
+ * Datasheet: https://ww1.microchip.com/downloads/en/devicedoc/11195c.pdf
  *
  * DEVID	#Wipers	#Positions	Resistance (kOhm)
  * mcp41010	1	256		10
@@ -21,9 +21,9 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/types.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 
 #define MCP41010_MAX_WIPERS	2
@@ -60,7 +60,7 @@ struct mcp41010_data {
 	const struct mcp41010_cfg *cfg;
 	struct mutex lock; /* Protect write sequences */
 	unsigned int value[MCP41010_MAX_WIPERS]; /* Cache wiper values */
-	u8 buf[2] ____cacheline_aligned;
+	u8 buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define MCP41010_CHANNEL(ch) {					\
@@ -146,13 +146,12 @@ static int mcp41010_probe(struct spi_device *spi)
 	data = iio_priv(indio_dev);
 	spi_set_drvdata(spi, indio_dev);
 	data->spi = spi;
-	data->cfg = of_device_get_match_data(&spi->dev);
+	data->cfg = device_get_match_data(&spi->dev);
 	if (!data->cfg)
 		data->cfg = &mcp41010_cfg[spi_get_device_id(spi)->driver_data];
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &mcp41010_info;
 	indio_dev->channels = mcp41010_channels;
 	indio_dev->num_channels = data->cfg->wipers;
diff --git a/drivers/iio/potentiometer/mcp4131.c b/drivers/iio/potentiometer/mcp4131.c
index 98df91e97f2f..7890c0993ec4 100644
--- a/drivers/iio/potentiometer/mcp4131.c
+++ b/drivers/iio/potentiometer/mcp4131.c
@@ -5,7 +5,7 @@
  * Copyright (c) 2016 Slawomir Stepien
  * Based on: Peter Rosin's code from mcp4531.c
  *
- * Datasheet: http://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf
+ * Datasheet: https://ww1.microchip.com/downloads/en/DeviceDoc/22060b.pdf
  *
  * DEVID	#Wipers	#Positions	Resistor Opts (kOhm)
  * mcp4131	1	129		5, 10, 50, 100
@@ -37,9 +37,9 @@
 #include <linux/iio/iio.h>
 #include <linux/iio/types.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 
 #define MCP4131_WRITE		(0x00 << 2)
@@ -129,7 +129,7 @@ struct mcp4131_data {
 	struct spi_device *spi;
 	const struct mcp4131_cfg *cfg;
 	struct mutex lock;
-	u8 buf[2] ____cacheline_aligned;
+	u8 buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 #define MCP4131_CHANNEL(ch) {					\
@@ -252,7 +252,7 @@ static int mcp4131_probe(struct spi_device *spi)
 	data = iio_priv(indio_dev);
 	spi_set_drvdata(spi, indio_dev);
 	data->spi = spi;
-	data->cfg = of_device_get_match_data(&spi->dev);
+	data->cfg = device_get_match_data(&spi->dev);
 	if (!data->cfg) {
 		devid = spi_get_device_id(spi)->driver_data;
 		data->cfg = &mcp4131_cfg[devid];
@@ -260,7 +260,6 @@ static int mcp4131_probe(struct spi_device *spi)
 
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &mcp4131_info;
 	indio_dev->channels = mcp4131_channels;
 	indio_dev->num_channels = data->cfg->wipers;
@@ -480,7 +479,7 @@ MODULE_DEVICE_TABLE(spi, mcp4131_id);
 static struct spi_driver mcp4131_driver = {
 	.driver = {
 		.name	= "mcp4131",
-		.of_match_table = of_match_ptr(mcp4131_dt_ids),
+		.of_match_table = mcp4131_dt_ids,
 	},
 	.probe		= mcp4131_probe,
 	.id_table	= mcp4131_id,
diff --git a/drivers/iio/potentiometer/mcp4531.c b/drivers/iio/potentiometer/mcp4531.c
index d71a22d71a30..c25f84b4a270 100644
--- a/drivers/iio/potentiometer/mcp4531.c
+++ b/drivers/iio/potentiometer/mcp4531.c
@@ -28,8 +28,8 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/err.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+#include <linux/property.h>
 
 #include <linux/iio/iio.h>
 
@@ -275,8 +275,6 @@ static const struct i2c_device_id mcp4531_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, mcp4531_id);
 
-#ifdef CONFIG_OF
-
 #define MCP4531_COMPATIBLE(of_compatible, cfg) {	\
 			.compatible = of_compatible,	\
 			.data = &mcp4531_cfg[cfg],	\
@@ -350,7 +348,6 @@ static const struct of_device_id mcp4531_of_match[] = {
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, mcp4531_of_match);
-#endif
 
 static int mcp4531_probe(struct i2c_client *client)
 {
@@ -371,11 +368,10 @@ static int mcp4531_probe(struct i2c_client *client)
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	data->cfg = of_device_get_match_data(dev);
+	data->cfg = device_get_match_data(dev);
 	if (!data->cfg)
 		data->cfg = &mcp4531_cfg[i2c_match_id(mcp4531_id, client)->driver_data];
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &mcp4531_info;
 	indio_dev->channels = mcp4531_channels;
 	indio_dev->num_channels = data->cfg->wipers;
@@ -387,7 +383,7 @@ static int mcp4531_probe(struct i2c_client *client)
 static struct i2c_driver mcp4531_driver = {
 	.driver = {
 		.name	= "mcp4531",
-		.of_match_table = of_match_ptr(mcp4531_of_match),
+		.of_match_table = mcp4531_of_match,
 	},
 	.probe_new	= mcp4531_probe,
 	.id_table	= mcp4531_id,
diff --git a/drivers/iio/potentiometer/tpl0102.c b/drivers/iio/potentiometer/tpl0102.c
index a0a07e47f13f..d996dc367fb7 100644
--- a/drivers/iio/potentiometer/tpl0102.c
+++ b/drivers/iio/potentiometer/tpl0102.c
@@ -140,7 +140,6 @@ static int tpl0102_probe(struct i2c_client *client,
 		return PTR_ERR(data->regmap);
 	}
 
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &tpl0102_info;
 	indio_dev->channels = tpl0102_channels;
 	indio_dev->num_channels = data->cfg->wipers;
diff --git a/drivers/iio/potentiostat/lmp91000.c b/drivers/iio/potentiostat/lmp91000.c
index a0e5f530faa9..5ec7060d31d9 100644
--- a/drivers/iio/potentiostat/lmp91000.c
+++ b/drivers/iio/potentiostat/lmp91000.c
@@ -11,7 +11,7 @@
 #include <linux/module.h>
 #include <linux/i2c.h>
 #include <linux/delay.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/regmap.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
@@ -71,8 +71,8 @@ struct lmp91000_data {
 
 	struct completion completion;
 	u8 chan_select;
-
-	u32 buffer[4]; /* 64-bit data + 64-bit timestamp */
+	/* 64-bit data + 64-bit naturally aligned timestamp */
+	u32 buffer[4] __aligned(8);
 };
 
 static const struct iio_chan_spec lmp91000_channels[] = {
@@ -205,13 +205,12 @@ static const struct iio_info lmp91000_info = {
 static int lmp91000_read_config(struct lmp91000_data *data)
 {
 	struct device *dev = data->dev;
-	struct device_node *np = dev->of_node;
 	unsigned int reg, val;
 	int i, ret;
 
-	ret = of_property_read_u32(np, "ti,tia-gain-ohm", &val);
+	ret = device_property_read_u32(dev, "ti,tia-gain-ohm", &val);
 	if (ret) {
-		if (!of_property_read_bool(np, "ti,external-tia-resistor")) {
+		if (!device_property_read_bool(dev, "ti,external-tia-resistor")) {
 			dev_err(dev, "no ti,tia-gain-ohm defined and external resistor not specified\n");
 			return ret;
 		}
@@ -232,7 +231,7 @@ static int lmp91000_read_config(struct lmp91000_data *data)
 		return ret;
 	}
 
-	ret = of_property_read_u32(np, "ti,rload-ohm", &val);
+	ret = device_property_read_u32(dev, "ti,rload-ohm", &val);
 	if (ret) {
 		val = 100;
 		dev_info(dev, "no ti,rload-ohm defined, default to %d\n", val);
@@ -272,10 +271,7 @@ static int lmp91000_buffer_cb(const void *val, void *private)
 	return 0;
 }
 
-static const struct iio_trigger_ops lmp91000_trigger_ops = {
-};
-
-static int lmp91000_buffer_preenable(struct iio_dev *indio_dev)
+static int lmp91000_buffer_postenable(struct iio_dev *indio_dev)
 {
 	struct lmp91000_data *data = iio_priv(indio_dev);
 
@@ -292,8 +288,7 @@ static int lmp91000_buffer_predisable(struct iio_dev *indio_dev)
 }
 
 static const struct iio_buffer_setup_ops lmp91000_buffer_setup_ops = {
-	.preenable = lmp91000_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
+	.postenable = lmp91000_buffer_postenable,
 	.predisable = lmp91000_buffer_predisable,
 };
 
@@ -313,7 +308,6 @@ static int lmp91000_probe(struct i2c_client *client,
 	indio_dev->channels = lmp91000_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lmp91000_channels);
 	indio_dev->name = LMP91000_DRV_NAME;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	i2c_set_clientdata(client, indio_dev);
 
@@ -325,15 +319,14 @@ static int lmp91000_probe(struct i2c_client *client,
 		return PTR_ERR(data->regmap);
 	}
 
-	data->trig = devm_iio_trigger_alloc(data->dev, "%s-mux%d",
-					    indio_dev->name, indio_dev->id);
+	data->trig = devm_iio_trigger_alloc(dev, "%s-mux%d",
+					    indio_dev->name,
+					    iio_device_id(indio_dev));
 	if (!data->trig) {
 		dev_err(dev, "cannot allocate iio trigger.\n");
 		return -ENOMEM;
 	}
 
-	data->trig->ops = &lmp91000_trigger_ops;
-	data->trig->dev.parent = dev;
 	init_completion(&data->completion);
 
 	ret = lmp91000_read_config(data);
@@ -391,7 +384,7 @@ error_unreg_trigger:
 	return ret;
 }
 
-static int lmp91000_remove(struct i2c_client *client)
+static void lmp91000_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct lmp91000_data *data = iio_priv(indio_dev);
@@ -403,8 +396,6 @@ static int lmp91000_remove(struct i2c_client *client)
 
 	iio_triggered_buffer_cleanup(indio_dev);
 	iio_trigger_unregister(data->trig);
-
-	return 0;
 }
 
 static const struct of_device_id lmp91000_of_match[] = {
@@ -424,7 +415,7 @@ MODULE_DEVICE_TABLE(i2c, lmp91000_id);
 static struct i2c_driver lmp91000_driver = {
 	.driver = {
 		.name = LMP91000_DRV_NAME,
-		.of_match_table = of_match_ptr(lmp91000_of_match),
+		.of_match_table = lmp91000_of_match,
 	},
 	.probe = lmp91000_probe,
 	.remove = lmp91000_remove,
diff --git a/drivers/iio/pressure/Kconfig b/drivers/iio/pressure/Kconfig
index 9c2d9bf8f100..c9453389e4f7 100644
--- a/drivers/iio/pressure/Kconfig
+++ b/drivers/iio/pressure/Kconfig
@@ -17,14 +17,14 @@ config ABP060MG
 	  will be called abp060mg.
 
 config BMP280
-	tristate "Bosch Sensortec BMP180/BMP280 pressure sensor I2C driver"
+	tristate "Bosch Sensortec BMP180/BMP280/BMP380 pressure sensor I2C driver"
 	depends on (I2C || SPI_MASTER)
 	select REGMAP
 	select BMP280_I2C if (I2C)
 	select BMP280_SPI if (SPI_MASTER)
 	help
-	  Say yes here to build support for Bosch Sensortec BMP180 and BMP280
-	  pressure and temperature sensors. Also supports the BME280 with
+	  Say yes here to build support for Bosch Sensortec BMP180, BMP280 and
+	  BMP380 pressure and temperature sensors. Also supports the BME280 with
 	  an additional humidity sensor channel.
 
 	  To compile this driver as a module, choose M here: the core module
@@ -79,7 +79,6 @@ config DPS310
 config HID_SENSOR_PRESS
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	tristate "HID PRESS"
@@ -101,6 +100,17 @@ config HP03
 	  To compile this driver as a module, choose M here: the module
 	  will be called hp03.
 
+config ICP10100
+	tristate "InvenSense ICP-101xx pressure and temperature sensor"
+	depends on I2C
+	select CRC8
+	help
+	  Say yes here to build support for InvenSense ICP-101xx barometric
+	  pressure and temperature sensor.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called icp10100.
+
 config MPL115
 	tristate
 
@@ -184,30 +194,35 @@ config IIO_ST_PRESS
 	tristate "STMicroelectronics pressure sensor Driver"
 	depends on (I2C || SPI_MASTER) && SYSFS
 	select IIO_ST_SENSORS_CORE
-	select IIO_ST_PRESS_I2C if (I2C)
-	select IIO_ST_PRESS_SPI if (SPI_MASTER)
 	select IIO_TRIGGERED_BUFFER if (IIO_BUFFER)
 	help
 	  Say yes here to build support for STMicroelectronics pressure
 	  sensors: LPS001WP, LPS25H, LPS331AP, LPS22HB, LPS22HH.
 
-	  This driver can also be built as a module. If so, these modules
-	  will be created:
-	  - st_pressure (core functions for the driver [it is mandatory]);
-	  - st_pressure_i2c (necessary for the I2C devices [optional*]);
-	  - st_pressure_spi (necessary for the SPI devices [optional*]);
-
-	  (*) one of these is necessary to do something.
+	  Also need to enable at least one of I2C and SPI interface drivers
+	  below.
 
 config IIO_ST_PRESS_I2C
-	tristate
-	depends on IIO_ST_PRESS
-	depends on IIO_ST_SENSORS_I2C
+	tristate "STMicroelectronics pressure sensor I2C Interface"
+	depends on I2C && IIO_ST_PRESS
+	default I2C && IIO_ST_PRESS
+	select IIO_ST_SENSORS_I2C
+	help
+	  Build support for STMicroelectronics pressure sensor I2C interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_pressure_i2c.
 
 config IIO_ST_PRESS_SPI
-	tristate
-	depends on IIO_ST_PRESS
-	depends on IIO_ST_SENSORS_SPI
+	tristate "STMicroelectronics pressure sensor SPI Interface"
+	depends on SPI_MASTER && IIO_ST_PRESS
+	default SPI_MASTER && IIO_ST_PRESS
+	select IIO_ST_SENSORS_SPI
+	help
+	  Build support for STMicroelectronics pressure sensor SPI interface.
+
+	  To compile this driver as a module, choose M here. The module
+	  will be called st_pressure_spi.
 
 config T5403
 	tristate "EPCOS T5403 digital barometric pressure sensor driver"
diff --git a/drivers/iio/pressure/Makefile b/drivers/iio/pressure/Makefile
index 5a79192d8cb5..083ae87ff48f 100644
--- a/drivers/iio/pressure/Makefile
+++ b/drivers/iio/pressure/Makefile
@@ -14,6 +14,7 @@ obj-$(CONFIG_DPS310) += dps310.o
 obj-$(CONFIG_IIO_CROS_EC_BARO) += cros_ec_baro.o
 obj-$(CONFIG_HID_SENSOR_PRESS)   += hid-sensor-press.o
 obj-$(CONFIG_HP03) += hp03.o
+obj-$(CONFIG_ICP10100) += icp10100.o
 obj-$(CONFIG_MPL115) += mpl115.o
 obj-$(CONFIG_MPL115_I2C) += mpl115_i2c.o
 obj-$(CONFIG_MPL115_SPI) += mpl115_spi.o
diff --git a/drivers/iio/pressure/abp060mg.c b/drivers/iio/pressure/abp060mg.c
index 267aad8af0a6..e1c3bdb371ee 100644
--- a/drivers/iio/pressure/abp060mg.c
+++ b/drivers/iio/pressure/abp060mg.c
@@ -194,7 +194,6 @@ static int abp060mg_probe(struct i2c_client *client,
 
 	abp060mg_init_device(indio_dev, cfg_id);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &abp060mg_info;
diff --git a/drivers/iio/pressure/bmp280-core.c b/drivers/iio/pressure/bmp280-core.c
index 29c209cc1108..c0aff78489b4 100644
--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -9,13 +9,22 @@
  * Driver for Bosch Sensortec BMP180 and BMP280 digital pressure sensor.
  *
  * Datasheet:
- * https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP180-DS000-121.pdf
- * https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BMP280-DS001-12.pdf
- * https://ae-bst.resource.bosch.com/media/_tech/media/datasheets/BST-BME280_DS001-11.pdf
+ * https://cdn-shop.adafruit.com/datasheets/BST-BMP180-DS000-09.pdf
+ * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp280-ds001.pdf
+ * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme280-ds002.pdf
+ * https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bmp388-ds001.pdf
+ *
+ * Notice:
+ * The link to the bmp180 datasheet points to an outdated version missing these changes:
+ * - Changed document referral from ANP015 to BST-MPS-AN004-00 on page 26
+ * - Updated equation for B3 param on section 3.5 to ((((long)AC1 * 4 + X3) << oss) + 2) / 4
+ * - Updated RoHS directive to 2011/65/EU effective 8 June 2011 on page 26
  */
 
 #define pr_fmt(fmt) "bmp280: " fmt
 
+#include <linux/bitops.h>
+#include <linux/bitfield.h>
 #include <linux/device.h>
 #include <linux/module.h>
 #include <linux/regmap.h>
@@ -30,6 +39,8 @@
 #include <linux/pm_runtime.h>
 #include <linux/random.h>
 
+#include <asm/unaligned.h>
+
 #include "bmp280.h"
 
 /*
@@ -74,12 +85,51 @@ struct bmp280_calib {
 	s8  H6;
 };
 
+/* See datasheet Section 3.11.1. */
+struct bmp380_calib {
+	u16 T1;
+	u16 T2;
+	s8  T3;
+	s16 P1;
+	s16 P2;
+	s8  P3;
+	s8  P4;
+	u16 P5;
+	u16 P6;
+	s8  P7;
+	s8  P8;
+	s16 P9;
+	s8  P10;
+	s8  P11;
+};
+
 static const char *const bmp280_supply_names[] = {
 	"vddd", "vdda"
 };
 
 #define BMP280_NUM_SUPPLIES ARRAY_SIZE(bmp280_supply_names)
 
+enum bmp380_odr {
+	BMP380_ODR_200HZ,
+	BMP380_ODR_100HZ,
+	BMP380_ODR_50HZ,
+	BMP380_ODR_25HZ,
+	BMP380_ODR_12_5HZ,
+	BMP380_ODR_6_25HZ,
+	BMP380_ODR_3_125HZ,
+	BMP380_ODR_1_5625HZ,
+	BMP380_ODR_0_78HZ,
+	BMP380_ODR_0_39HZ,
+	BMP380_ODR_0_2HZ,
+	BMP380_ODR_0_1HZ,
+	BMP380_ODR_0_05HZ,
+	BMP380_ODR_0_02HZ,
+	BMP380_ODR_0_01HZ,
+	BMP380_ODR_0_006HZ,
+	BMP380_ODR_0_003HZ,
+	BMP380_ODR_0_0015HZ,
+};
+
 struct bmp280_data {
 	struct device *dev;
 	struct mutex lock;
@@ -90,6 +140,7 @@ struct bmp280_data {
 	union {
 		struct bmp180_calib bmp180;
 		struct bmp280_calib bmp280;
+		struct bmp380_calib bmp380;
 	} calib;
 	struct regulator_bulk_data supplies[BMP280_NUM_SUPPLIES];
 	unsigned int start_up_time; /* in microseconds */
@@ -98,36 +149,99 @@ struct bmp280_data {
 	u8 oversampling_press;
 	u8 oversampling_temp;
 	u8 oversampling_humid;
+	u8 iir_filter_coeff;
+
+	/*
+	 * BMP380 devices introduce sampling frequency configuration. See
+	 * datasheet sections 3.3.3. and 4.3.19 for more details.
+	 *
+	 * BMx280 devices allowed indirect configuration of sampling frequency
+	 * changing the t_standby duration between measurements, as detailed on
+	 * section 3.6.3 of the datasheet.
+	 */
+	int sampling_freq;
 
 	/*
 	 * Carryover value from temperature conversion, used in pressure
 	 * calculation.
 	 */
 	s32 t_fine;
+
+	/*
+	 * DMA (thus cache coherency maintenance) may require the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	union {
+		/* Sensor data buffer */
+		u8 buf[3];
+		/* Calibration data buffers */
+		__le16 bmp280_cal_buf[BMP280_CONTIGUOUS_CALIB_REGS / 2];
+		__be16 bmp180_cal_buf[BMP180_REG_CALIB_COUNT / 2];
+		u8 bmp380_cal_buf[BMP380_CALIB_REG_COUNT];
+		/* Miscellaneous, endianess-aware data buffers */
+		__le16 le16;
+		__be16 be16;
+	} __aligned(IIO_DMA_MINALIGN);
 };
 
 struct bmp280_chip_info {
+	unsigned int id_reg;
+
+	const struct iio_chan_spec *channels;
+	int num_channels;
+	unsigned int start_up_time;
+
 	const int *oversampling_temp_avail;
 	int num_oversampling_temp_avail;
+	int oversampling_temp_default;
 
 	const int *oversampling_press_avail;
 	int num_oversampling_press_avail;
+	int oversampling_press_default;
 
 	const int *oversampling_humid_avail;
 	int num_oversampling_humid_avail;
+	int oversampling_humid_default;
+
+	const int *iir_filter_coeffs_avail;
+	int num_iir_filter_coeffs_avail;
+	int iir_filter_coeff_default;
+
+	const int (*sampling_freq_avail)[2];
+	int num_sampling_freq_avail;
+	int sampling_freq_default;
 
 	int (*chip_config)(struct bmp280_data *);
 	int (*read_temp)(struct bmp280_data *, int *);
 	int (*read_press)(struct bmp280_data *, int *, int *);
 	int (*read_humid)(struct bmp280_data *, int *, int *);
+	int (*read_calib)(struct bmp280_data *);
 };
 
 /*
  * These enums are used for indexing into the array of compensation
  * parameters for BMP280.
  */
-enum { T1, T2, T3 };
-enum { P1, P2, P3, P4, P5, P6, P7, P8, P9 };
+enum { T1, T2, T3, P1, P2, P3, P4, P5, P6, P7, P8, P9 };
+
+enum {
+	/* Temperature calib indexes */
+	BMP380_T1 = 0,
+	BMP380_T2 = 2,
+	BMP380_T3 = 4,
+	/* Pressure calib indexes */
+	BMP380_P1 = 5,
+	BMP380_P2 = 7,
+	BMP380_P3 = 9,
+	BMP380_P4 = 10,
+	BMP380_P5 = 11,
+	BMP380_P6 = 13,
+	BMP380_P7 = 15,
+	BMP380_P8 = 16,
+	BMP380_P9 = 17,
+	BMP380_P10 = 19,
+	BMP380_P11 = 20,
+};
 
 static const struct iio_chan_spec bmp280_channels[] = {
 	{
@@ -147,56 +261,81 @@ static const struct iio_chan_spec bmp280_channels[] = {
 	},
 };
 
-static int bmp280_read_calib(struct bmp280_data *data,
-			     struct bmp280_calib *calib,
-			     unsigned int chip)
+static const struct iio_chan_spec bmp380_channels[] = {
+	{
+		.type = IIO_PRESSURE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+					   BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+	},
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+					   BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+	},
+	{
+		.type = IIO_HUMIDITYRELATIVE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
+				      BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ) |
+					   BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+	},
+};
+
+static int bmp280_read_calib(struct bmp280_data *data)
 {
+	struct bmp280_calib *calib = &data->calib.bmp280;
 	int ret;
-	unsigned int tmp;
-	__le16 l16;
-	__be16 b16;
-	struct device *dev = data->dev;
-	__le16 t_buf[BMP280_COMP_TEMP_REG_COUNT / 2];
-	__le16 p_buf[BMP280_COMP_PRESS_REG_COUNT / 2];
 
-	/* Read temperature calibration values. */
+
+	/* Read temperature and pressure calibration values. */
 	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_TEMP_START,
-			       t_buf, BMP280_COMP_TEMP_REG_COUNT);
+			       data->bmp280_cal_buf, sizeof(data->bmp280_cal_buf));
 	if (ret < 0) {
 		dev_err(data->dev,
-			"failed to read temperature calibration parameters\n");
+			"failed to read temperature and pressure calibration parameters\n");
 		return ret;
 	}
 
-	/* Toss the temperature calibration data into the entropy pool */
-	add_device_randomness(t_buf, sizeof(t_buf));
+	/* Toss the temperature and pressure calibration data into the entropy pool */
+	add_device_randomness(data->bmp280_cal_buf, sizeof(data->bmp280_cal_buf));
+
+	/* Parse temperature calibration values. */
+	calib->T1 = le16_to_cpu(data->bmp280_cal_buf[T1]);
+	calib->T2 = le16_to_cpu(data->bmp280_cal_buf[T2]);
+	calib->T3 = le16_to_cpu(data->bmp280_cal_buf[T3]);
+
+	/* Parse pressure calibration values. */
+	calib->P1 = le16_to_cpu(data->bmp280_cal_buf[P1]);
+	calib->P2 = le16_to_cpu(data->bmp280_cal_buf[P2]);
+	calib->P3 = le16_to_cpu(data->bmp280_cal_buf[P3]);
+	calib->P4 = le16_to_cpu(data->bmp280_cal_buf[P4]);
+	calib->P5 = le16_to_cpu(data->bmp280_cal_buf[P5]);
+	calib->P6 = le16_to_cpu(data->bmp280_cal_buf[P6]);
+	calib->P7 = le16_to_cpu(data->bmp280_cal_buf[P7]);
+	calib->P8 = le16_to_cpu(data->bmp280_cal_buf[P8]);
+	calib->P9 = le16_to_cpu(data->bmp280_cal_buf[P9]);
 
-	calib->T1 = le16_to_cpu(t_buf[T1]);
-	calib->T2 = le16_to_cpu(t_buf[T2]);
-	calib->T3 = le16_to_cpu(t_buf[T3]);
+	return 0;
+}
 
-	/* Read pressure calibration values. */
-	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_PRESS_START,
-			       p_buf, BMP280_COMP_PRESS_REG_COUNT);
-	if (ret < 0) {
-		dev_err(data->dev,
-			"failed to read pressure calibration parameters\n");
+static int bme280_read_calib(struct bmp280_data *data)
+{
+	struct bmp280_calib *calib = &data->calib.bmp280;
+	struct device *dev = data->dev;
+	unsigned int tmp;
+	int ret;
+
+	/* Load shared calibration params with bmp280 first */
+	ret = bmp280_read_calib(data);
+	if  (ret < 0) {
+		dev_err(dev, "failed to read common bmp280 calibration parameters\n");
 		return ret;
 	}
 
-	/* Toss the pressure calibration data into the entropy pool */
-	add_device_randomness(p_buf, sizeof(p_buf));
-
-	calib->P1 = le16_to_cpu(p_buf[P1]);
-	calib->P2 = le16_to_cpu(p_buf[P2]);
-	calib->P3 = le16_to_cpu(p_buf[P3]);
-	calib->P4 = le16_to_cpu(p_buf[P4]);
-	calib->P5 = le16_to_cpu(p_buf[P5]);
-	calib->P6 = le16_to_cpu(p_buf[P6]);
-	calib->P7 = le16_to_cpu(p_buf[P7]);
-	calib->P8 = le16_to_cpu(p_buf[P8]);
-	calib->P9 = le16_to_cpu(p_buf[P9]);
-
 	/*
 	 * Read humidity calibration values.
 	 * Due to some odd register addressing we cannot just
@@ -204,8 +343,6 @@ static int bmp280_read_calib(struct bmp280_data *data,
 	 * value separately and sometimes do some bit shifting...
 	 * Humidity data is only available on BME280.
 	 */
-	if (chip != BME280_CHIP_ID)
-		return 0;
 
 	ret = regmap_read(data->regmap, BMP280_REG_COMP_H1, &tmp);
 	if (ret < 0) {
@@ -214,12 +351,13 @@ static int bmp280_read_calib(struct bmp280_data *data,
 	}
 	calib->H1 = tmp;
 
-	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H2, &l16, 2);
+	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H2,
+			       &data->le16, sizeof(data->le16));
 	if (ret < 0) {
 		dev_err(dev, "failed to read H2 comp value\n");
 		return ret;
 	}
-	calib->H2 = sign_extend32(le16_to_cpu(l16), 15);
+	calib->H2 = sign_extend32(le16_to_cpu(data->le16), 15);
 
 	ret = regmap_read(data->regmap, BMP280_REG_COMP_H3, &tmp);
 	if (ret < 0) {
@@ -228,20 +366,22 @@ static int bmp280_read_calib(struct bmp280_data *data,
 	}
 	calib->H3 = tmp;
 
-	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H4, &b16, 2);
+	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H4,
+			       &data->be16, sizeof(data->be16));
 	if (ret < 0) {
 		dev_err(dev, "failed to read H4 comp value\n");
 		return ret;
 	}
-	calib->H4 = sign_extend32(((be16_to_cpu(b16) >> 4) & 0xff0) |
-				  (be16_to_cpu(b16) & 0xf), 11);
+	calib->H4 = sign_extend32(((be16_to_cpu(data->be16) >> 4) & 0xff0) |
+				  (be16_to_cpu(data->be16) & 0xf), 11);
 
-	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H5, &l16, 2);
+	ret = regmap_bulk_read(data->regmap, BMP280_REG_COMP_H5,
+			       &data->le16, sizeof(data->le16));
 	if (ret < 0) {
 		dev_err(dev, "failed to read H5 comp value\n");
 		return ret;
 	}
-	calib->H5 = sign_extend32(((le16_to_cpu(l16) >> 4) & 0xfff), 11);
+	calib->H5 = sign_extend32(FIELD_GET(BMP280_COMP_H5_MASK, le16_to_cpu(data->le16)), 11);
 
 	ret = regmap_read(data->regmap, BMP280_REG_COMP_H6, &tmp);
 	if (ret < 0) {
@@ -261,8 +401,8 @@ static int bmp280_read_calib(struct bmp280_data *data,
 static u32 bmp280_compensate_humidity(struct bmp280_data *data,
 				      s32 adc_humidity)
 {
-	s32 var;
 	struct bmp280_calib *calib = &data->calib.bmp280;
+	s32 var;
 
 	var = ((s32)data->t_fine) - (s32)76800;
 	var = ((((adc_humidity << 14) - (calib->H4 << 20) - (calib->H5 * var))
@@ -271,6 +411,8 @@ static u32 bmp280_compensate_humidity(struct bmp280_data *data,
 		+ (s32)2097152) * calib->H2 + 8192) >> 14);
 	var -= ((((var >> 15) * (var >> 15)) >> 7) * (s32)calib->H1) >> 4;
 
+	var = clamp_val(var, 0, 419430400);
+
 	return var >> 12;
 };
 
@@ -284,8 +426,8 @@ static u32 bmp280_compensate_humidity(struct bmp280_data *data,
 static s32 bmp280_compensate_temp(struct bmp280_data *data,
 				  s32 adc_temp)
 {
-	s32 var1, var2;
 	struct bmp280_calib *calib = &data->calib.bmp280;
+	s32 var1, var2;
 
 	var1 = (((adc_temp >> 3) - ((s32)calib->T1 << 1)) *
 		((s32)calib->T2)) >> 11;
@@ -307,8 +449,8 @@ static s32 bmp280_compensate_temp(struct bmp280_data *data,
 static u32 bmp280_compensate_press(struct bmp280_data *data,
 				   s32 adc_press)
 {
-	s64 var1, var2, p;
 	struct bmp280_calib *calib = &data->calib.bmp280;
+	s64 var1, var2, p;
 
 	var1 = ((s64)data->t_fine) - 128000;
 	var2 = var1 * var1 * (s64)calib->P6;
@@ -333,18 +475,17 @@ static u32 bmp280_compensate_press(struct bmp280_data *data,
 static int bmp280_read_temp(struct bmp280_data *data,
 			    int *val)
 {
-	int ret;
-	__be32 tmp = 0;
 	s32 adc_temp, comp_temp;
+	int ret;
 
 	ret = regmap_bulk_read(data->regmap, BMP280_REG_TEMP_MSB,
-			       (u8 *) &tmp, 3);
+			       data->buf, sizeof(data->buf));
 	if (ret < 0) {
 		dev_err(data->dev, "failed to read temperature\n");
 		return ret;
 	}
 
-	adc_temp = be32_to_cpu(tmp) >> 12;
+	adc_temp = FIELD_GET(BMP280_MEAS_TRIM_MASK, get_unaligned_be24(data->buf));
 	if (adc_temp == BMP280_TEMP_SKIPPED) {
 		/* reading was skipped */
 		dev_err(data->dev, "reading temperature skipped\n");
@@ -367,10 +508,9 @@ static int bmp280_read_temp(struct bmp280_data *data,
 static int bmp280_read_press(struct bmp280_data *data,
 			     int *val, int *val2)
 {
-	int ret;
-	__be32 tmp = 0;
-	s32 adc_press;
 	u32 comp_press;
+	s32 adc_press;
+	int ret;
 
 	/* Read and compensate temperature so we get a reading of t_fine. */
 	ret = bmp280_read_temp(data, NULL);
@@ -378,13 +518,13 @@ static int bmp280_read_press(struct bmp280_data *data,
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, BMP280_REG_PRESS_MSB,
-			       (u8 *) &tmp, 3);
+			       data->buf, sizeof(data->buf));
 	if (ret < 0) {
 		dev_err(data->dev, "failed to read pressure\n");
 		return ret;
 	}
 
-	adc_press = be32_to_cpu(tmp) >> 12;
+	adc_press = FIELD_GET(BMP280_MEAS_TRIM_MASK, get_unaligned_be24(data->buf));
 	if (adc_press == BMP280_PRESS_SKIPPED) {
 		/* reading was skipped */
 		dev_err(data->dev, "reading pressure skipped\n");
@@ -400,10 +540,9 @@ static int bmp280_read_press(struct bmp280_data *data,
 
 static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
 {
-	int ret;
-	__be16 tmp = 0;
-	s32 adc_humidity;
 	u32 comp_humidity;
+	s32 adc_humidity;
+	int ret;
 
 	/* Read and compensate temperature so we get a reading of t_fine. */
 	ret = bmp280_read_temp(data, NULL);
@@ -411,13 +550,13 @@ static int bmp280_read_humid(struct bmp280_data *data, int *val, int *val2)
 		return ret;
 
 	ret = regmap_bulk_read(data->regmap, BMP280_REG_HUMIDITY_MSB,
-			       (u8 *) &tmp, 2);
+			       &data->be16, sizeof(data->be16));
 	if (ret < 0) {
 		dev_err(data->dev, "failed to read humidity\n");
 		return ret;
 	}
 
-	adc_humidity = be16_to_cpu(tmp);
+	adc_humidity = be16_to_cpu(data->be16);
 	if (adc_humidity == BMP280_HUMIDITY_SKIPPED) {
 		/* reading was skipped */
 		dev_err(data->dev, "reading humidity skipped\n");
@@ -434,8 +573,8 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *chan,
 			   int *val, int *val2, long mask)
 {
-	int ret;
 	struct bmp280_data *data = iio_priv(indio_dev);
+	int ret;
 
 	pm_runtime_get_sync(data->dev);
 	mutex_lock(&data->lock);
@@ -476,6 +615,25 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
 			break;
 		}
 		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		if (!data->chip_info->sampling_freq_avail) {
+			ret = -EINVAL;
+			break;
+		}
+
+		*val = data->chip_info->sampling_freq_avail[data->sampling_freq][0];
+		*val2 = data->chip_info->sampling_freq_avail[data->sampling_freq][1];
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		if (!data->chip_info->iir_filter_coeffs_avail) {
+			ret = -EINVAL;
+			break;
+		}
+
+		*val = (1 << data->iir_filter_coeff) - 1;
+		ret = IIO_VAL_INT;
+		break;
 	default:
 		ret = -EINVAL;
 		break;
@@ -491,15 +649,23 @@ static int bmp280_read_raw(struct iio_dev *indio_dev,
 static int bmp280_write_oversampling_ratio_humid(struct bmp280_data *data,
 					       int val)
 {
-	int i;
 	const int *avail = data->chip_info->oversampling_humid_avail;
 	const int n = data->chip_info->num_oversampling_humid_avail;
+	int ret, prev;
+	int i;
 
 	for (i = 0; i < n; i++) {
 		if (avail[i] == val) {
+			prev = data->oversampling_humid;
 			data->oversampling_humid = ilog2(val);
 
-			return data->chip_info->chip_config(data);
+			ret = data->chip_info->chip_config(data);
+			if (ret) {
+				data->oversampling_humid = prev;
+				data->chip_info->chip_config(data);
+				return ret;
+			}
+			return 0;
 		}
 	}
 	return -EINVAL;
@@ -508,15 +674,23 @@ static int bmp280_write_oversampling_ratio_humid(struct bmp280_data *data,
 static int bmp280_write_oversampling_ratio_temp(struct bmp280_data *data,
 					       int val)
 {
-	int i;
 	const int *avail = data->chip_info->oversampling_temp_avail;
 	const int n = data->chip_info->num_oversampling_temp_avail;
+	int ret, prev;
+	int i;
 
 	for (i = 0; i < n; i++) {
 		if (avail[i] == val) {
+			prev = data->oversampling_temp;
 			data->oversampling_temp = ilog2(val);
 
-			return data->chip_info->chip_config(data);
+			ret = data->chip_info->chip_config(data);
+			if (ret) {
+				data->oversampling_temp = prev;
+				data->chip_info->chip_config(data);
+				return ret;
+			}
+			return 0;
 		}
 	}
 	return -EINVAL;
@@ -525,15 +699,73 @@ static int bmp280_write_oversampling_ratio_temp(struct bmp280_data *data,
 static int bmp280_write_oversampling_ratio_press(struct bmp280_data *data,
 					       int val)
 {
-	int i;
 	const int *avail = data->chip_info->oversampling_press_avail;
 	const int n = data->chip_info->num_oversampling_press_avail;
+	int ret, prev;
+	int i;
 
 	for (i = 0; i < n; i++) {
 		if (avail[i] == val) {
+			prev = data->oversampling_press;
 			data->oversampling_press = ilog2(val);
 
-			return data->chip_info->chip_config(data);
+			ret = data->chip_info->chip_config(data);
+			if (ret) {
+				data->oversampling_press = prev;
+				data->chip_info->chip_config(data);
+				return ret;
+			}
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+static int bmp280_write_sampling_frequency(struct bmp280_data *data,
+					   int val, int val2)
+{
+	const int (*avail)[2] = data->chip_info->sampling_freq_avail;
+	const int n = data->chip_info->num_sampling_freq_avail;
+	int ret, prev;
+	int i;
+
+	for (i = 0; i < n; i++) {
+		if (avail[i][0] == val && avail[i][1] == val2) {
+			prev = data->sampling_freq;
+			data->sampling_freq = i;
+
+			ret = data->chip_info->chip_config(data);
+			if (ret) {
+				data->sampling_freq = prev;
+				data->chip_info->chip_config(data);
+				return ret;
+			}
+			return 0;
+		}
+	}
+	return -EINVAL;
+}
+
+static int bmp280_write_iir_filter_coeffs(struct bmp280_data *data, int val)
+{
+	const int *avail = data->chip_info->iir_filter_coeffs_avail;
+	const int n = data->chip_info->num_iir_filter_coeffs_avail;
+	int ret, prev;
+	int i;
+
+	for (i = 0; i < n; i++) {
+		if (avail[i] - 1  == val) {
+			prev = data->iir_filter_coeff;
+			data->iir_filter_coeff = i;
+
+			ret = data->chip_info->chip_config(data);
+			if (ret) {
+				data->iir_filter_coeff = prev;
+				data->chip_info->chip_config(data);
+				return ret;
+
+			}
+			return 0;
 		}
 	}
 	return -EINVAL;
@@ -543,9 +775,15 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
 			    struct iio_chan_spec const *chan,
 			    int val, int val2, long mask)
 {
-	int ret = 0;
 	struct bmp280_data *data = iio_priv(indio_dev);
+	int ret = 0;
 
+	/*
+	 * Helper functions to update sensor running configuration.
+	 * If an error happens applying new settings, will try restore
+	 * previous parameters to ensure the sensor is left in a known
+	 * working configuration.
+	 */
 	switch (mask) {
 	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
 		pm_runtime_get_sync(data->dev);
@@ -568,6 +806,22 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
 		pm_runtime_mark_last_busy(data->dev);
 		pm_runtime_put_autosuspend(data->dev);
 		break;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		pm_runtime_get_sync(data->dev);
+		mutex_lock(&data->lock);
+		ret = bmp280_write_sampling_frequency(data, val, val2);
+		mutex_unlock(&data->lock);
+		pm_runtime_mark_last_busy(data->dev);
+		pm_runtime_put_autosuspend(data->dev);
+		break;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		pm_runtime_get_sync(data->dev);
+		mutex_lock(&data->lock);
+		ret = bmp280_write_iir_filter_coeffs(data, val);
+		mutex_unlock(&data->lock);
+		pm_runtime_mark_last_busy(data->dev);
+		pm_runtime_put_autosuspend(data->dev);
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -575,64 +829,56 @@ static int bmp280_write_raw(struct iio_dev *indio_dev,
 	return ret;
 }
 
-static ssize_t bmp280_show_avail(char *buf, const int *vals, const int n)
+static int bmp280_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
 {
-	size_t len = 0;
-	int i;
-
-	for (i = 0; i < n; i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d ", vals[i]);
-
-	buf[len - 1] = '\n';
-
-	return len;
-}
-
-static ssize_t bmp280_show_temp_oversampling_avail(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct bmp280_data *data = iio_priv(dev_to_iio_dev(dev));
-
-	return bmp280_show_avail(buf, data->chip_info->oversampling_temp_avail,
-				 data->chip_info->num_oversampling_temp_avail);
-}
-
-static ssize_t bmp280_show_press_oversampling_avail(struct device *dev,
-				struct device_attribute *attr, char *buf)
-{
-	struct bmp280_data *data = iio_priv(dev_to_iio_dev(dev));
+	struct bmp280_data *data = iio_priv(indio_dev);
 
-	return bmp280_show_avail(buf, data->chip_info->oversampling_press_avail,
-				 data->chip_info->num_oversampling_press_avail);
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		switch (chan->type) {
+		case IIO_PRESSURE:
+			*vals = data->chip_info->oversampling_press_avail;
+			*length = data->chip_info->num_oversampling_press_avail;
+			break;
+		case IIO_TEMP:
+			*vals = data->chip_info->oversampling_temp_avail;
+			*length = data->chip_info->num_oversampling_temp_avail;
+			break;
+		default:
+			return -EINVAL;
+		}
+		*type = IIO_VAL_INT;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (const int *)data->chip_info->sampling_freq_avail;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		/* Values are stored in a 2D matrix */
+		*length = data->chip_info->num_sampling_freq_avail;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		*vals = data->chip_info->iir_filter_coeffs_avail;
+		*type = IIO_VAL_INT;
+		*length = data->chip_info->num_iir_filter_coeffs_avail;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
 }
 
-static IIO_DEVICE_ATTR(in_temp_oversampling_ratio_available,
-	S_IRUGO, bmp280_show_temp_oversampling_avail, NULL, 0);
-
-static IIO_DEVICE_ATTR(in_pressure_oversampling_ratio_available,
-	S_IRUGO, bmp280_show_press_oversampling_avail, NULL, 0);
-
-static struct attribute *bmp280_attributes[] = {
-	&iio_dev_attr_in_temp_oversampling_ratio_available.dev_attr.attr,
-	&iio_dev_attr_in_pressure_oversampling_ratio_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group bmp280_attrs_group = {
-	.attrs = bmp280_attributes,
-};
-
 static const struct iio_info bmp280_info = {
 	.read_raw = &bmp280_read_raw,
+	.read_avail = &bmp280_read_avail,
 	.write_raw = &bmp280_write_raw,
-	.attrs = &bmp280_attrs_group,
 };
 
 static int bmp280_chip_config(struct bmp280_data *data)
 {
+	u8 osrs = FIELD_PREP(BMP280_OSRS_TEMP_MASK, data->oversampling_temp + 1) |
+		  FIELD_PREP(BMP280_OSRS_PRESS_MASK, data->oversampling_press + 1);
 	int ret;
-	u8 osrs = BMP280_OSRS_TEMP_X(data->oversampling_temp + 1) |
-		  BMP280_OSRS_PRESS_X(data->oversampling_press + 1);
 
 	ret = regmap_write_bits(data->regmap, BMP280_REG_CTRL_MEAS,
 				 BMP280_OSRS_TEMP_MASK |
@@ -660,21 +906,39 @@ static int bmp280_chip_config(struct bmp280_data *data)
 static const int bmp280_oversampling_avail[] = { 1, 2, 4, 8, 16 };
 
 static const struct bmp280_chip_info bmp280_chip_info = {
+	.id_reg = BMP280_REG_ID,
+	.start_up_time = 2000,
+	.channels = bmp280_channels,
+	.num_channels = 2,
+
 	.oversampling_temp_avail = bmp280_oversampling_avail,
 	.num_oversampling_temp_avail = ARRAY_SIZE(bmp280_oversampling_avail),
+	/*
+	 * Oversampling config values on BMx280 have one additional setting
+	 * that other generations of the family don't:
+	 * The value 0 means the measurement is bypassed instead of
+	 * oversampling set to x1.
+	 *
+	 * To account for this difference, and preserve the same common
+	 * config logic, this is handled later on chip_config callback
+	 * incrementing one unit the oversampling setting.
+	 */
+	.oversampling_temp_default = BMP280_OSRS_TEMP_2X - 1,
 
 	.oversampling_press_avail = bmp280_oversampling_avail,
 	.num_oversampling_press_avail = ARRAY_SIZE(bmp280_oversampling_avail),
+	.oversampling_press_default = BMP280_OSRS_PRESS_16X - 1,
 
 	.chip_config = bmp280_chip_config,
 	.read_temp = bmp280_read_temp,
 	.read_press = bmp280_read_press,
+	.read_calib = bmp280_read_calib,
 };
 
 static int bme280_chip_config(struct bmp280_data *data)
 {
+	u8 osrs = FIELD_PREP(BMP280_OSRS_HUMIDITY_MASK, data->oversampling_humid + 1);
 	int ret;
-	u8 osrs = BMP280_OSRS_HUMIDITIY_X(data->oversampling_humid + 1);
 
 	/*
 	 * Oversampling of humidity must be set before oversampling of
@@ -690,30 +954,408 @@ static int bme280_chip_config(struct bmp280_data *data)
 }
 
 static const struct bmp280_chip_info bme280_chip_info = {
+	.id_reg = BMP280_REG_ID,
+	.start_up_time = 2000,
+	.channels = bmp280_channels,
+	.num_channels = 3,
+
 	.oversampling_temp_avail = bmp280_oversampling_avail,
 	.num_oversampling_temp_avail = ARRAY_SIZE(bmp280_oversampling_avail),
+	.oversampling_temp_default = BMP280_OSRS_TEMP_2X - 1,
 
 	.oversampling_press_avail = bmp280_oversampling_avail,
 	.num_oversampling_press_avail = ARRAY_SIZE(bmp280_oversampling_avail),
+	.oversampling_press_default = BMP280_OSRS_PRESS_16X - 1,
 
 	.oversampling_humid_avail = bmp280_oversampling_avail,
 	.num_oversampling_humid_avail = ARRAY_SIZE(bmp280_oversampling_avail),
+	.oversampling_humid_default = BMP280_OSRS_HUMIDITY_16X - 1,
 
 	.chip_config = bme280_chip_config,
 	.read_temp = bmp280_read_temp,
 	.read_press = bmp280_read_press,
 	.read_humid = bmp280_read_humid,
+	.read_calib = bme280_read_calib,
 };
 
-static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
+/*
+ * Helper function to send a command to BMP3XX sensors.
+ *
+ * Sensor processes commands written to the CMD register and signals
+ * execution result through "cmd_rdy" and "cmd_error" flags available on
+ * STATUS and ERROR registers.
+ */
+static int bmp380_cmd(struct bmp280_data *data, u8 cmd)
+{
+	unsigned int reg;
+	int ret;
+
+	/* Check if device is ready to process a command */
+	ret = regmap_read(data->regmap, BMP380_REG_STATUS, &reg);
+	if (ret) {
+		dev_err(data->dev, "failed to read error register\n");
+		return ret;
+	}
+	if (!(reg & BMP380_STATUS_CMD_RDY_MASK)) {
+		dev_err(data->dev, "device is not ready to accept commands\n");
+		return -EBUSY;
+	}
+
+	/* Send command to process */
+	ret = regmap_write(data->regmap, BMP380_REG_CMD, cmd);
+	if (ret) {
+		dev_err(data->dev, "failed to send command to device\n");
+		return ret;
+	}
+	/* Wait for 2ms for command to be processed */
+	usleep_range(data->start_up_time, data->start_up_time + 100);
+	/* Check for command processing error */
+	ret = regmap_read(data->regmap, BMP380_REG_ERROR, &reg);
+	if (ret) {
+		dev_err(data->dev, "error reading ERROR reg\n");
+		return ret;
+	}
+	if (reg & BMP380_ERR_CMD_MASK) {
+		dev_err(data->dev, "error processing command 0x%X\n", cmd);
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+/*
+ * Returns temperature in Celsius dregrees, resolution is 0.01º C. Output value of
+ * "5123" equals 51.2º C. t_fine carries fine temperature as global value.
+ *
+ * Taken from datasheet, Section Appendix 9, "Compensation formula" and repo
+ * https://github.com/BoschSensortec/BMP3-Sensor-API.
+ */
+static s32 bmp380_compensate_temp(struct bmp280_data *data, u32 adc_temp)
+{
+	s64 var1, var2, var3, var4, var5, var6, comp_temp;
+	struct bmp380_calib *calib = &data->calib.bmp380;
+
+	var1 = ((s64) adc_temp) - (((s64) calib->T1) << 8);
+	var2 = var1 * ((s64) calib->T2);
+	var3 = var1 * var1;
+	var4 = var3 * ((s64) calib->T3);
+	var5 = (var2 << 18) + var4;
+	var6 = var5 >> 32;
+	data->t_fine = (s32) var6;
+	comp_temp = (var6 * 25) >> 14;
+
+	comp_temp = clamp_val(comp_temp, BMP380_MIN_TEMP, BMP380_MAX_TEMP);
+	return (s32) comp_temp;
+}
+
+/*
+ * Returns pressure in Pa as an unsigned 32 bit integer in fractional Pascal.
+ * Output value of "9528709" represents 9528709/100 = 95287.09 Pa = 952.8709 hPa.
+ *
+ * Taken from datasheet, Section 9.3. "Pressure compensation" and repository
+ * https://github.com/BoschSensortec/BMP3-Sensor-API.
+ */
+static u32 bmp380_compensate_press(struct bmp280_data *data, u32 adc_press)
+{
+	s64 var1, var2, var3, var4, var5, var6, offset, sensitivity;
+	struct bmp380_calib *calib = &data->calib.bmp380;
+	u32 comp_press;
+
+	var1 = (s64)data->t_fine * (s64)data->t_fine;
+	var2 = var1 >> 6;
+	var3 = (var2 * ((s64) data->t_fine)) >> 8;
+	var4 = ((s64)calib->P8 * var3) >> 5;
+	var5 = ((s64)calib->P7 * var1) << 4;
+	var6 = ((s64)calib->P6 * (s64)data->t_fine) << 22;
+	offset = ((s64)calib->P5 << 47) + var4 + var5 + var6;
+	var2 = ((s64)calib->P4 * var3) >> 5;
+	var4 = ((s64)calib->P3 * var1) << 2;
+	var5 = ((s64)calib->P2 - ((s64)1 << 14)) *
+	       ((s64)data->t_fine << 21);
+	sensitivity = (((s64) calib->P1 - ((s64) 1 << 14)) << 46) +
+			var2 + var4 + var5;
+	var1 = (sensitivity >> 24) * (s64)adc_press;
+	var2 = (s64)calib->P10 * (s64)data->t_fine;
+	var3 = var2 + ((s64)calib->P9 << 16);
+	var4 = (var3 * (s64)adc_press) >> 13;
+
+	/*
+	 * Dividing by 10 followed by multiplying by 10 to avoid
+	 * possible overflow caused by (uncomp_data->pressure * partial_data4).
+	 */
+	var5 = ((s64)adc_press * div_s64(var4, 10)) >> 9;
+	var5 *= 10;
+	var6 = (s64)adc_press * (s64)adc_press;
+	var2 = ((s64)calib->P11 * var6) >> 16;
+	var3 = (var2 * (s64)adc_press) >> 7;
+	var4 = (offset >> 2) + var1 + var5 + var3;
+	comp_press = ((u64)var4 * 25) >> 40;
+
+	comp_press = clamp_val(comp_press, BMP380_MIN_PRES, BMP380_MAX_PRES);
+	return comp_press;
+}
+
+static int bmp380_read_temp(struct bmp280_data *data, int *val)
+{
+	s32 comp_temp;
+	u32 adc_temp;
+	int ret;
+
+	ret = regmap_bulk_read(data->regmap, BMP380_REG_TEMP_XLSB,
+			       data->buf, sizeof(data->buf));
+	if (ret) {
+		dev_err(data->dev, "failed to read temperature\n");
+		return ret;
+	}
+
+	adc_temp = get_unaligned_le24(data->buf);
+	if (adc_temp == BMP380_TEMP_SKIPPED) {
+		dev_err(data->dev, "reading temperature skipped\n");
+		return -EIO;
+	}
+	comp_temp = bmp380_compensate_temp(data, adc_temp);
+
+	/*
+	 * Val might be NULL if we're called by the read_press routine,
+	 * who only cares about the carry over t_fine value.
+	 */
+	if (val) {
+		/* IIO reports temperatures in milli Celsius */
+		*val = comp_temp * 10;
+		return IIO_VAL_INT;
+	}
+
+	return 0;
+}
+
+static int bmp380_read_press(struct bmp280_data *data, int *val, int *val2)
+{
+	s32 comp_press;
+	u32 adc_press;
+	int ret;
+
+	/* Read and compensate for temperature so we get a reading of t_fine */
+	ret = bmp380_read_temp(data, NULL);
+	if (ret)
+		return ret;
+
+	ret = regmap_bulk_read(data->regmap, BMP380_REG_PRESS_XLSB,
+			       data->buf, sizeof(data->buf));
+	if (ret) {
+		dev_err(data->dev, "failed to read pressure\n");
+		return ret;
+	}
+
+	adc_press = get_unaligned_le24(data->buf);
+	if (adc_press == BMP380_PRESS_SKIPPED) {
+		dev_err(data->dev, "reading pressure skipped\n");
+		return -EIO;
+	}
+	comp_press = bmp380_compensate_press(data, adc_press);
+
+	*val = comp_press;
+	/* Compensated pressure is in cPa (centipascals) */
+	*val2 = 100000;
+
+	return IIO_VAL_FRACTIONAL;
+}
+
+static int bmp380_read_calib(struct bmp280_data *data)
+{
+	struct bmp380_calib *calib = &data->calib.bmp380;
+	int ret;
+
+	/* Read temperature and pressure calibration data */
+	ret = regmap_bulk_read(data->regmap, BMP380_REG_CALIB_TEMP_START,
+			       data->bmp380_cal_buf, sizeof(data->bmp380_cal_buf));
+	if (ret) {
+		dev_err(data->dev,
+			"failed to read temperature calibration parameters\n");
+		return ret;
+	}
+
+	/* Toss the temperature calibration data into the entropy pool */
+	add_device_randomness(data->bmp380_cal_buf, sizeof(data->bmp380_cal_buf));
+
+	/* Parse calibration values */
+	calib->T1 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_T1]);
+	calib->T2 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_T2]);
+	calib->T3 = data->bmp380_cal_buf[BMP380_T3];
+	calib->P1 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_P1]);
+	calib->P2 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_P2]);
+	calib->P3 = data->bmp380_cal_buf[BMP380_P3];
+	calib->P4 = data->bmp380_cal_buf[BMP380_P4];
+	calib->P5 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_P5]);
+	calib->P6 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_P6]);
+	calib->P7 = data->bmp380_cal_buf[BMP380_P7];
+	calib->P8 = data->bmp380_cal_buf[BMP380_P8];
+	calib->P9 = get_unaligned_le16(&data->bmp380_cal_buf[BMP380_P9]);
+	calib->P10 = data->bmp380_cal_buf[BMP380_P10];
+	calib->P11 = data->bmp380_cal_buf[BMP380_P11];
+
+	return 0;
+}
+
+static const int bmp380_odr_table[][2] = {
+	[BMP380_ODR_200HZ]	= {200, 0},
+	[BMP380_ODR_100HZ]	= {100, 0},
+	[BMP380_ODR_50HZ]	= {50, 0},
+	[BMP380_ODR_25HZ]	= {25, 0},
+	[BMP380_ODR_12_5HZ]	= {12, 500000},
+	[BMP380_ODR_6_25HZ]	= {6, 250000},
+	[BMP380_ODR_3_125HZ]	= {3, 125000},
+	[BMP380_ODR_1_5625HZ]	= {1, 562500},
+	[BMP380_ODR_0_78HZ]	= {0, 781250},
+	[BMP380_ODR_0_39HZ]	= {0, 390625},
+	[BMP380_ODR_0_2HZ]	= {0, 195313},
+	[BMP380_ODR_0_1HZ]	= {0, 97656},
+	[BMP380_ODR_0_05HZ]	= {0, 48828},
+	[BMP380_ODR_0_02HZ]	= {0, 24414},
+	[BMP380_ODR_0_01HZ]	= {0, 12207},
+	[BMP380_ODR_0_006HZ]	= {0, 6104},
+	[BMP380_ODR_0_003HZ]	= {0, 3052},
+	[BMP380_ODR_0_0015HZ]	= {0, 1526},
+};
+
+static int bmp380_chip_config(struct bmp280_data *data)
 {
+	bool change = false, aux;
+	unsigned int tmp;
+	u8 osrs;
 	int ret;
+
+	/* Configure power control register */
+	ret = regmap_update_bits(data->regmap, BMP380_REG_POWER_CONTROL,
+				 BMP380_CTRL_SENSORS_MASK,
+				 BMP380_CTRL_SENSORS_PRESS_EN |
+				 BMP380_CTRL_SENSORS_TEMP_EN);
+	if (ret) {
+		dev_err(data->dev,
+			"failed to write operation control register\n");
+		return ret;
+	}
+
+	/* Configure oversampling */
+	osrs = FIELD_PREP(BMP380_OSRS_TEMP_MASK, data->oversampling_temp) |
+	       FIELD_PREP(BMP380_OSRS_PRESS_MASK, data->oversampling_press);
+
+	ret = regmap_update_bits_check(data->regmap, BMP380_REG_OSR,
+				       BMP380_OSRS_TEMP_MASK |
+				       BMP380_OSRS_PRESS_MASK,
+				       osrs, &aux);
+	if (ret) {
+		dev_err(data->dev, "failed to write oversampling register\n");
+		return ret;
+	}
+	change = change || aux;
+
+	/* Configure output data rate */
+	ret = regmap_update_bits_check(data->regmap, BMP380_REG_ODR,
+				       BMP380_ODRS_MASK, data->sampling_freq, &aux);
+	if (ret) {
+		dev_err(data->dev, "failed to write ODR selection register\n");
+		return ret;
+	}
+	change = change || aux;
+
+	/* Set filter data */
+	ret = regmap_update_bits_check(data->regmap, BMP380_REG_CONFIG, BMP380_FILTER_MASK,
+				       FIELD_PREP(BMP380_FILTER_MASK, data->iir_filter_coeff),
+				       &aux);
+	if (ret) {
+		dev_err(data->dev, "failed to write config register\n");
+		return ret;
+	}
+	change = change || aux;
+
+	if (change) {
+		/*
+		 * The configurations errors are detected on the fly during a measurement
+		 * cycle. If the sampling frequency is too low, it's faster to reset
+		 * the measurement loop than wait until the next measurement is due.
+		 *
+		 * Resets sensor measurement loop toggling between sleep and normal
+		 * operating modes.
+		 */
+		ret = regmap_write_bits(data->regmap, BMP380_REG_POWER_CONTROL,
+					BMP380_MODE_MASK,
+					FIELD_PREP(BMP380_MODE_MASK, BMP380_MODE_SLEEP));
+		if (ret) {
+			dev_err(data->dev, "failed to set sleep mode\n");
+			return ret;
+		}
+		usleep_range(2000, 2500);
+		ret = regmap_write_bits(data->regmap, BMP380_REG_POWER_CONTROL,
+					BMP380_MODE_MASK,
+					FIELD_PREP(BMP380_MODE_MASK, BMP380_MODE_NORMAL));
+		if (ret) {
+			dev_err(data->dev, "failed to set normal mode\n");
+			return ret;
+		}
+		/*
+		 * Waits for measurement before checking configuration error flag.
+		 * Selected longest measure time indicated in section 3.9.1
+		 * in the datasheet.
+		 */
+		msleep(80);
+
+		/* Check config error flag */
+		ret = regmap_read(data->regmap, BMP380_REG_ERROR, &tmp);
+		if (ret) {
+			dev_err(data->dev,
+				"failed to read error register\n");
+			return ret;
+		}
+		if (tmp & BMP380_ERR_CONF_MASK) {
+			dev_warn(data->dev,
+				"sensor flagged configuration as incompatible\n");
+			return -EINVAL;
+		}
+	}
+
+	return 0;
+}
+
+static const int bmp380_oversampling_avail[] = { 1, 2, 4, 8, 16, 32 };
+static const int bmp380_iir_filter_coeffs_avail[] = { 1, 2, 4, 8, 16, 32, 64, 128};
+
+static const struct bmp280_chip_info bmp380_chip_info = {
+	.id_reg = BMP380_REG_ID,
+	.start_up_time = 2000,
+	.channels = bmp380_channels,
+	.num_channels = 2,
+
+	.oversampling_temp_avail = bmp380_oversampling_avail,
+	.num_oversampling_temp_avail = ARRAY_SIZE(bmp380_oversampling_avail),
+	.oversampling_temp_default = ilog2(1),
+
+	.oversampling_press_avail = bmp380_oversampling_avail,
+	.num_oversampling_press_avail = ARRAY_SIZE(bmp380_oversampling_avail),
+	.oversampling_press_default = ilog2(4),
+
+	.sampling_freq_avail = bmp380_odr_table,
+	.num_sampling_freq_avail = ARRAY_SIZE(bmp380_odr_table) * 2,
+	.sampling_freq_default = BMP380_ODR_50HZ,
+
+	.iir_filter_coeffs_avail = bmp380_iir_filter_coeffs_avail,
+	.num_iir_filter_coeffs_avail = ARRAY_SIZE(bmp380_iir_filter_coeffs_avail),
+	.iir_filter_coeff_default = 2,
+
+	.chip_config = bmp380_chip_config,
+	.read_temp = bmp380_read_temp,
+	.read_press = bmp380_read_press,
+	.read_calib = bmp380_read_calib,
+};
+
+static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
+{
 	const int conversion_time_max[] = { 4500, 7500, 13500, 25500 };
 	unsigned int delay_us;
 	unsigned int ctrl;
+	int ret;
 
 	if (data->use_eoc)
-		init_completion(&data->done);
+		reinit_completion(&data->done);
 
 	ret = regmap_write(data->regmap, BMP280_REG_CTRL_MEAS, ctrl_meas);
 	if (ret)
@@ -730,7 +1372,7 @@ static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
 		if (!ret)
 			dev_err(data->dev, "timeout waiting for completion\n");
 	} else {
-		if (ctrl_meas == BMP180_MEAS_TEMP)
+		if (FIELD_GET(BMP180_MEAS_CTRL_MASK, ctrl_meas) == BMP180_MEAS_TEMP)
 			delay_us = 4500;
 		else
 			delay_us =
@@ -753,54 +1395,56 @@ static int bmp180_measure(struct bmp280_data *data, u8 ctrl_meas)
 static int bmp180_read_adc_temp(struct bmp280_data *data, int *val)
 {
 	int ret;
-	__be16 tmp = 0;
 
-	ret = bmp180_measure(data, BMP180_MEAS_TEMP);
+	ret = bmp180_measure(data,
+			     FIELD_PREP(BMP180_MEAS_CTRL_MASK, BMP180_MEAS_TEMP) |
+			     BMP180_MEAS_SCO);
 	if (ret)
 		return ret;
 
-	ret = regmap_bulk_read(data->regmap, BMP180_REG_OUT_MSB, (u8 *)&tmp, 2);
+	ret = regmap_bulk_read(data->regmap, BMP180_REG_OUT_MSB,
+			       &data->be16, sizeof(data->be16));
 	if (ret)
 		return ret;
 
-	*val = be16_to_cpu(tmp);
+	*val = be16_to_cpu(data->be16);
 
 	return 0;
 }
 
-static int bmp180_read_calib(struct bmp280_data *data,
-			     struct bmp180_calib *calib)
+static int bmp180_read_calib(struct bmp280_data *data)
 {
+	struct bmp180_calib *calib = &data->calib.bmp180;
 	int ret;
 	int i;
-	__be16 buf[BMP180_REG_CALIB_COUNT / 2];
 
-	ret = regmap_bulk_read(data->regmap, BMP180_REG_CALIB_START, buf,
-			       sizeof(buf));
+	ret = regmap_bulk_read(data->regmap, BMP180_REG_CALIB_START,
+			       data->bmp180_cal_buf, sizeof(data->bmp180_cal_buf));
 
 	if (ret < 0)
 		return ret;
 
 	/* None of the words has the value 0 or 0xFFFF */
-	for (i = 0; i < ARRAY_SIZE(buf); i++) {
-		if (buf[i] == cpu_to_be16(0) || buf[i] == cpu_to_be16(0xffff))
+	for (i = 0; i < ARRAY_SIZE(data->bmp180_cal_buf); i++) {
+		if (data->bmp180_cal_buf[i] == cpu_to_be16(0) ||
+		    data->bmp180_cal_buf[i] == cpu_to_be16(0xffff))
 			return -EIO;
 	}
 
 	/* Toss the calibration data into the entropy pool */
-	add_device_randomness(buf, sizeof(buf));
-
-	calib->AC1 = be16_to_cpu(buf[AC1]);
-	calib->AC2 = be16_to_cpu(buf[AC2]);
-	calib->AC3 = be16_to_cpu(buf[AC3]);
-	calib->AC4 = be16_to_cpu(buf[AC4]);
-	calib->AC5 = be16_to_cpu(buf[AC5]);
-	calib->AC6 = be16_to_cpu(buf[AC6]);
-	calib->B1 = be16_to_cpu(buf[B1]);
-	calib->B2 = be16_to_cpu(buf[B2]);
-	calib->MB = be16_to_cpu(buf[MB]);
-	calib->MC = be16_to_cpu(buf[MC]);
-	calib->MD = be16_to_cpu(buf[MD]);
+	add_device_randomness(data->bmp180_cal_buf, sizeof(data->bmp180_cal_buf));
+
+	calib->AC1 = be16_to_cpu(data->bmp180_cal_buf[AC1]);
+	calib->AC2 = be16_to_cpu(data->bmp180_cal_buf[AC2]);
+	calib->AC3 = be16_to_cpu(data->bmp180_cal_buf[AC3]);
+	calib->AC4 = be16_to_cpu(data->bmp180_cal_buf[AC4]);
+	calib->AC5 = be16_to_cpu(data->bmp180_cal_buf[AC5]);
+	calib->AC6 = be16_to_cpu(data->bmp180_cal_buf[AC6]);
+	calib->B1 = be16_to_cpu(data->bmp180_cal_buf[B1]);
+	calib->B2 = be16_to_cpu(data->bmp180_cal_buf[B2]);
+	calib->MB = be16_to_cpu(data->bmp180_cal_buf[MB]);
+	calib->MC = be16_to_cpu(data->bmp180_cal_buf[MC]);
+	calib->MD = be16_to_cpu(data->bmp180_cal_buf[MD]);
 
 	return 0;
 }
@@ -813,8 +1457,8 @@ static int bmp180_read_calib(struct bmp280_data *data,
  */
 static s32 bmp180_compensate_temp(struct bmp280_data *data, s32 adc_temp)
 {
-	s32 x1, x2;
 	struct bmp180_calib *calib = &data->calib.bmp180;
+	s32 x1, x2;
 
 	x1 = ((adc_temp - calib->AC6) * calib->AC5) >> 15;
 	x2 = (calib->MC << 11) / (x1 + calib->MD);
@@ -825,8 +1469,8 @@ static s32 bmp180_compensate_temp(struct bmp280_data *data, s32 adc_temp)
 
 static int bmp180_read_temp(struct bmp280_data *data, int *val)
 {
-	int ret;
 	s32 adc_temp, comp_temp;
+	int ret;
 
 	ret = bmp180_read_adc_temp(data, &adc_temp);
 	if (ret)
@@ -848,19 +1492,22 @@ static int bmp180_read_temp(struct bmp280_data *data, int *val)
 
 static int bmp180_read_adc_press(struct bmp280_data *data, int *val)
 {
-	int ret;
-	__be32 tmp = 0;
 	u8 oss = data->oversampling_press;
+	int ret;
 
-	ret = bmp180_measure(data, BMP180_MEAS_PRESS_X(oss));
+	ret = bmp180_measure(data,
+			     FIELD_PREP(BMP180_MEAS_CTRL_MASK, BMP180_MEAS_PRESS) |
+			     FIELD_PREP(BMP180_OSRS_PRESS_MASK, oss) |
+			     BMP180_MEAS_SCO);
 	if (ret)
 		return ret;
 
-	ret = regmap_bulk_read(data->regmap, BMP180_REG_OUT_MSB, (u8 *)&tmp, 3);
+	ret = regmap_bulk_read(data->regmap, BMP180_REG_OUT_MSB,
+			       data->buf, sizeof(data->buf));
 	if (ret)
 		return ret;
 
-	*val = (be32_to_cpu(tmp) >> 8) >> (8 - oss);
+	*val = get_unaligned_be24(data->buf) >> (8 - oss);
 
 	return 0;
 }
@@ -872,11 +1519,11 @@ static int bmp180_read_adc_press(struct bmp280_data *data, int *val)
  */
 static u32 bmp180_compensate_press(struct bmp280_data *data, s32 adc_press)
 {
+	struct bmp180_calib *calib = &data->calib.bmp180;
+	s32 oss = data->oversampling_press;
 	s32 x1, x2, x3, p;
 	s32 b3, b6;
 	u32 b4, b7;
-	s32 oss = data->oversampling_press;
-	struct bmp180_calib *calib = &data->calib.bmp180;
 
 	b6 = data->t_fine - 4000;
 	x1 = (calib->B2 * (b6 * b6 >> 12)) >> 11;
@@ -903,9 +1550,9 @@ static u32 bmp180_compensate_press(struct bmp280_data *data, s32 adc_press)
 static int bmp180_read_press(struct bmp280_data *data,
 			     int *val, int *val2)
 {
-	int ret;
-	s32 adc_press;
 	u32 comp_press;
+	s32 adc_press;
+	int ret;
 
 	/* Read and compensate temperature so we get a reading of t_fine. */
 	ret = bmp180_read_temp(data, NULL);
@@ -933,17 +1580,25 @@ static const int bmp180_oversampling_temp_avail[] = { 1 };
 static const int bmp180_oversampling_press_avail[] = { 1, 2, 4, 8 };
 
 static const struct bmp280_chip_info bmp180_chip_info = {
+	.id_reg = BMP280_REG_ID,
+	.start_up_time = 2000,
+	.channels = bmp280_channels,
+	.num_channels = 2,
+
 	.oversampling_temp_avail = bmp180_oversampling_temp_avail,
 	.num_oversampling_temp_avail =
 		ARRAY_SIZE(bmp180_oversampling_temp_avail),
+	.oversampling_temp_default = 0,
 
 	.oversampling_press_avail = bmp180_oversampling_press_avail,
 	.num_oversampling_press_avail =
 		ARRAY_SIZE(bmp180_oversampling_press_avail),
+	.oversampling_press_default = BMP180_MEAS_PRESS_8X,
 
 	.chip_config = bmp180_chip_config,
 	.read_temp = bmp180_read_temp,
 	.read_press = bmp180_read_press,
+	.read_calib = bmp180_read_calib,
 };
 
 static irqreturn_t bmp085_eoc_irq(int irq, void *d)
@@ -965,10 +1620,12 @@ static int bmp085_fetch_eoc_irq(struct device *dev,
 
 	irq_trig = irqd_get_trigger_type(irq_get_irq_data(irq));
 	if (irq_trig != IRQF_TRIGGER_RISING) {
-		dev_err(dev, "non-rising trigger given for EOC interrupt, "
-			"trying to enforce it\n");
+		dev_err(dev, "non-rising trigger given for EOC interrupt, trying to enforce it\n");
 		irq_trig = IRQF_TRIGGER_RISING;
 	}
+
+	init_completion(&data->done);
+
 	ret = devm_request_threaded_irq(dev,
 			irq,
 			bmp085_eoc_irq,
@@ -1008,11 +1665,12 @@ int bmp280_common_probe(struct device *dev,
 			const char *name,
 			int irq)
 {
-	int ret;
+	const struct bmp280_chip_info *chip_info;
 	struct iio_dev *indio_dev;
 	struct bmp280_data *data;
-	unsigned int chip_id;
 	struct gpio_desc *gpiod;
+	unsigned int chip_id;
+	int ret;
 
 	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
 	if (!indio_dev)
@@ -1022,38 +1680,37 @@ int bmp280_common_probe(struct device *dev,
 	mutex_init(&data->lock);
 	data->dev = dev;
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
-	indio_dev->channels = bmp280_channels;
 	indio_dev->info = &bmp280_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	switch (chip) {
 	case BMP180_CHIP_ID:
-		indio_dev->num_channels = 2;
-		data->chip_info = &bmp180_chip_info;
-		data->oversampling_press = ilog2(8);
-		data->oversampling_temp = ilog2(1);
-		data->start_up_time = 10000;
+		chip_info = &bmp180_chip_info;
 		break;
 	case BMP280_CHIP_ID:
-		indio_dev->num_channels = 2;
-		data->chip_info = &bmp280_chip_info;
-		data->oversampling_press = ilog2(16);
-		data->oversampling_temp = ilog2(2);
-		data->start_up_time = 2000;
+		chip_info = &bmp280_chip_info;
 		break;
 	case BME280_CHIP_ID:
-		indio_dev->num_channels = 3;
-		data->chip_info = &bme280_chip_info;
-		data->oversampling_press = ilog2(16);
-		data->oversampling_humid = ilog2(16);
-		data->oversampling_temp = ilog2(2);
-		data->start_up_time = 2000;
+		chip_info = &bme280_chip_info;
+		break;
+	case BMP380_CHIP_ID:
+		chip_info = &bmp380_chip_info;
 		break;
 	default:
 		return -EINVAL;
 	}
+	data->chip_info = chip_info;
+
+	/* Apply initial values from chip info structure */
+	indio_dev->channels = chip_info->channels;
+	indio_dev->num_channels = chip_info->num_channels;
+	data->oversampling_press = chip_info->oversampling_press_default;
+	data->oversampling_humid = chip_info->oversampling_humid_default;
+	data->oversampling_temp = chip_info->oversampling_temp_default;
+	data->iir_filter_coeff = chip_info->iir_filter_coeff_default;
+	data->sampling_freq = chip_info->sampling_freq_default;
+	data->start_up_time = chip_info->start_up_time;
 
 	/* Bring up regulators */
 	regulator_bulk_set_supply_names(data->supplies,
@@ -1082,15 +1739,16 @@ int bmp280_common_probe(struct device *dev,
 	usleep_range(data->start_up_time, data->start_up_time + 100);
 
 	/* Bring chip out of reset if there is an assigned GPIO line */
-	gpiod = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
+	gpiod = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);
 	/* Deassert the signal */
-	if (!IS_ERR(gpiod)) {
+	if (gpiod) {
 		dev_info(dev, "release reset\n");
 		gpiod_set_value(gpiod, 0);
 	}
 
 	data->regmap = regmap;
-	ret = regmap_read(regmap, BMP280_REG_ID, &chip_id);
+
+	ret = regmap_read(regmap, data->chip_info->id_reg, &chip_id);
 	if (ret < 0)
 		return ret;
 	if (chip_id != chip) {
@@ -1099,6 +1757,13 @@ int bmp280_common_probe(struct device *dev,
 		return -EINVAL;
 	}
 
+	/* BMP3xx requires soft-reset as part of initialization */
+	if (chip_id == BMP380_CHIP_ID) {
+		ret = bmp380_cmd(data, BMP380_CMD_SOFT_RESET);
+		if (ret < 0)
+			return ret;
+	}
+
 	ret = data->chip_info->chip_config(data);
 	if (ret < 0)
 		return ret;
@@ -1110,21 +1775,11 @@ int bmp280_common_probe(struct device *dev,
 	 * non-volatile memory during production". Let's read them out at probe
 	 * time once. They will not change.
 	 */
-	if (chip_id  == BMP180_CHIP_ID) {
-		ret = bmp180_read_calib(data, &data->calib.bmp180);
-		if (ret < 0) {
-			dev_err(data->dev,
-				"failed to read calibration coefficients\n");
-			return ret;
-		}
-	} else if (chip_id == BMP280_CHIP_ID || chip_id == BME280_CHIP_ID) {
-		ret = bmp280_read_calib(data, &data->calib.bmp280, chip_id);
-		if (ret < 0) {
-			dev_err(data->dev,
-				"failed to read calibration coefficients\n");
-			return ret;
-		}
-	}
+
+	ret = data->chip_info->read_calib(data);
+	if (ret < 0)
+		return dev_err_probe(data->dev, ret,
+				     "failed to read calibration coefficients\n");
 
 	/*
 	 * Attempt to grab an optional EOC IRQ - only the BMP085 has this
@@ -1155,9 +1810,8 @@ int bmp280_common_probe(struct device *dev,
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL(bmp280_common_probe);
+EXPORT_SYMBOL_NS(bmp280_common_probe, IIO_BMP280);
 
-#ifdef CONFIG_PM
 static int bmp280_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -1178,15 +1832,9 @@ static int bmp280_runtime_resume(struct device *dev)
 	usleep_range(data->start_up_time, data->start_up_time + 100);
 	return data->chip_info->chip_config(data);
 }
-#endif /* CONFIG_PM */
 
-const struct dev_pm_ops bmp280_dev_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend,
-				pm_runtime_force_resume)
-	SET_RUNTIME_PM_OPS(bmp280_runtime_suspend,
-			   bmp280_runtime_resume, NULL)
-};
-EXPORT_SYMBOL(bmp280_dev_pm_ops);
+EXPORT_RUNTIME_DEV_PM_OPS(bmp280_dev_pm_ops, bmp280_runtime_suspend,
+			  bmp280_runtime_resume, NULL);
 
 MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
 MODULE_DESCRIPTION("Driver for Bosch Sensortec BMP180/BMP280 pressure and temperature sensor");
diff --git a/drivers/iio/pressure/bmp280-i2c.c b/drivers/iio/pressure/bmp280-i2c.c
index 8b03ea15c0d0..0c27211f3ea0 100644
--- a/drivers/iio/pressure/bmp280-i2c.c
+++ b/drivers/iio/pressure/bmp280-i2c.c
@@ -19,6 +19,9 @@ static int bmp280_i2c_probe(struct i2c_client *client,
 	case BME280_CHIP_ID:
 		regmap_config = &bmp280_regmap_config;
 		break;
+	case BMP380_CHIP_ID:
+		regmap_config = &bmp380_regmap_config;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -37,19 +40,21 @@ static int bmp280_i2c_probe(struct i2c_client *client,
 }
 
 static const struct of_device_id bmp280_of_i2c_match[] = {
-	{ .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
-	{ .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
-	{ .compatible = "bosch,bmp180", .data = (void *)BMP180_CHIP_ID },
 	{ .compatible = "bosch,bmp085", .data = (void *)BMP180_CHIP_ID },
+	{ .compatible = "bosch,bmp180", .data = (void *)BMP180_CHIP_ID },
+	{ .compatible = "bosch,bmp280", .data = (void *)BMP280_CHIP_ID },
+	{ .compatible = "bosch,bme280", .data = (void *)BME280_CHIP_ID },
+	{ .compatible = "bosch,bmp380", .data = (void *)BMP380_CHIP_ID },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmp280_of_i2c_match);
 
 static const struct i2c_device_id bmp280_i2c_id[] = {
-	{"bmp280", BMP280_CHIP_ID },
-	{"bmp180", BMP180_CHIP_ID },
 	{"bmp085", BMP180_CHIP_ID },
+	{"bmp180", BMP180_CHIP_ID },
+	{"bmp280", BMP280_CHIP_ID },
 	{"bme280", BME280_CHIP_ID },
+	{"bmp380", BMP380_CHIP_ID },
 	{ },
 };
 MODULE_DEVICE_TABLE(i2c, bmp280_i2c_id);
@@ -58,7 +63,7 @@ static struct i2c_driver bmp280_i2c_driver = {
 	.driver = {
 		.name	= "bmp280",
 		.of_match_table = bmp280_of_i2c_match,
-		.pm = &bmp280_dev_pm_ops,
+		.pm = pm_ptr(&bmp280_dev_pm_ops),
 	},
 	.probe		= bmp280_i2c_probe,
 	.id_table	= bmp280_i2c_id,
@@ -68,3 +73,4 @@ module_i2c_driver(bmp280_i2c_driver);
 MODULE_AUTHOR("Vlad Dogaru <vlad.dogaru@intel.com>");
 MODULE_DESCRIPTION("Driver for Bosch Sensortec BMP180/BMP280 pressure and temperature sensor");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_BMP280);
diff --git a/drivers/iio/pressure/bmp280-regmap.c b/drivers/iio/pressure/bmp280-regmap.c
index 08c00ac32bda..c98c67970265 100644
--- a/drivers/iio/pressure/bmp280-regmap.c
+++ b/drivers/iio/pressure/bmp280-regmap.c
@@ -13,7 +13,7 @@ static bool bmp180_is_writeable_reg(struct device *dev, unsigned int reg)
 		return true;
 	default:
 		return false;
-	};
+	}
 }
 
 static bool bmp180_is_volatile_reg(struct device *dev, unsigned int reg)
@@ -39,7 +39,7 @@ const struct regmap_config bmp180_regmap_config = {
 	.writeable_reg = bmp180_is_writeable_reg,
 	.volatile_reg = bmp180_is_volatile_reg,
 };
-EXPORT_SYMBOL(bmp180_regmap_config);
+EXPORT_SYMBOL_NS(bmp180_regmap_config, IIO_BMP280);
 
 static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
 {
@@ -51,7 +51,7 @@ static bool bmp280_is_writeable_reg(struct device *dev, unsigned int reg)
 		return true;
 	default:
 		return false;
-	};
+	}
 }
 
 static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
@@ -72,6 +72,49 @@ static bool bmp280_is_volatile_reg(struct device *dev, unsigned int reg)
 	}
 }
 
+static bool bmp380_is_writeable_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BMP380_REG_CMD:
+	case BMP380_REG_CONFIG:
+	case BMP380_REG_FIFO_CONFIG_1:
+	case BMP380_REG_FIFO_CONFIG_2:
+	case BMP380_REG_FIFO_WATERMARK_LSB:
+	case BMP380_REG_FIFO_WATERMARK_MSB:
+	case BMP380_REG_POWER_CONTROL:
+	case BMP380_REG_INT_CONTROL:
+	case BMP380_REG_IF_CONFIG:
+	case BMP380_REG_ODR:
+	case BMP380_REG_OSR:
+		return true;
+	default:
+		return false;
+	}
+}
+
+static bool bmp380_is_volatile_reg(struct device *dev, unsigned int reg)
+{
+	switch (reg) {
+	case BMP380_REG_TEMP_XLSB:
+	case BMP380_REG_TEMP_LSB:
+	case BMP380_REG_TEMP_MSB:
+	case BMP380_REG_PRESS_XLSB:
+	case BMP380_REG_PRESS_LSB:
+	case BMP380_REG_PRESS_MSB:
+	case BMP380_REG_SENSOR_TIME_XLSB:
+	case BMP380_REG_SENSOR_TIME_LSB:
+	case BMP380_REG_SENSOR_TIME_MSB:
+	case BMP380_REG_INT_STATUS:
+	case BMP380_REG_FIFO_DATA:
+	case BMP380_REG_STATUS:
+	case BMP380_REG_ERROR:
+	case BMP380_REG_EVENT:
+		return true;
+	default:
+		return false;
+	}
+}
+
 const struct regmap_config bmp280_regmap_config = {
 	.reg_bits = 8,
 	.val_bits = 8,
@@ -82,4 +125,16 @@ const struct regmap_config bmp280_regmap_config = {
 	.writeable_reg = bmp280_is_writeable_reg,
 	.volatile_reg = bmp280_is_volatile_reg,
 };
-EXPORT_SYMBOL(bmp280_regmap_config);
+EXPORT_SYMBOL_NS(bmp280_regmap_config, IIO_BMP280);
+
+const struct regmap_config bmp380_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = BMP380_REG_CMD,
+	.cache_type = REGCACHE_RBTREE,
+
+	.writeable_reg = bmp380_is_writeable_reg,
+	.volatile_reg = bmp380_is_volatile_reg,
+};
+EXPORT_SYMBOL_NS(bmp380_regmap_config, IIO_BMP280);
diff --git a/drivers/iio/pressure/bmp280-spi.c b/drivers/iio/pressure/bmp280-spi.c
index 625b86878ad8..011c68e07ebf 100644
--- a/drivers/iio/pressure/bmp280-spi.c
+++ b/drivers/iio/pressure/bmp280-spi.c
@@ -66,6 +66,9 @@ static int bmp280_spi_probe(struct spi_device *spi)
 	case BME280_CHIP_ID:
 		regmap_config = &bmp280_regmap_config;
 		break;
+	case BMP380_CHIP_ID:
+		regmap_config = &bmp380_regmap_config;
+		break;
 	default:
 		return -EINVAL;
 	}
@@ -92,6 +95,7 @@ static const struct of_device_id bmp280_of_spi_match[] = {
 	{ .compatible = "bosch,bmp181", },
 	{ .compatible = "bosch,bmp280", },
 	{ .compatible = "bosch,bme280", },
+	{ .compatible = "bosch,bmp380", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, bmp280_of_spi_match);
@@ -101,6 +105,7 @@ static const struct spi_device_id bmp280_spi_id[] = {
 	{ "bmp181", BMP180_CHIP_ID },
 	{ "bmp280", BMP280_CHIP_ID },
 	{ "bme280", BME280_CHIP_ID },
+	{ "bmp380", BMP380_CHIP_ID },
 	{ }
 };
 MODULE_DEVICE_TABLE(spi, bmp280_spi_id);
@@ -109,7 +114,7 @@ static struct spi_driver bmp280_spi_driver = {
 	.driver = {
 		.name = "bmp280",
 		.of_match_table = bmp280_of_spi_match,
-		.pm = &bmp280_dev_pm_ops,
+		.pm = pm_ptr(&bmp280_dev_pm_ops),
 	},
 	.id_table = bmp280_spi_id,
 	.probe = bmp280_spi_probe,
@@ -118,3 +123,4 @@ module_spi_driver(bmp280_spi_driver);
 
 MODULE_DESCRIPTION("BMP280 SPI bus driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_BMP280);
diff --git a/drivers/iio/pressure/bmp280.h b/drivers/iio/pressure/bmp280.h
index 57ba0e85db91..c791325c7416 100644
--- a/drivers/iio/pressure/bmp280.h
+++ b/drivers/iio/pressure/bmp280.h
@@ -3,6 +3,87 @@
 #include <linux/device.h>
 #include <linux/regmap.h>
 
+/* BMP380 specific registers */
+#define BMP380_REG_CMD			0x7E
+#define BMP380_REG_CONFIG		0x1F
+#define BMP380_REG_ODR			0x1D
+#define BMP380_REG_OSR			0x1C
+#define BMP380_REG_POWER_CONTROL	0x1B
+#define BMP380_REG_IF_CONFIG		0x1A
+#define BMP380_REG_INT_CONTROL		0x19
+#define BMP380_REG_INT_STATUS		0x11
+#define BMP380_REG_EVENT		0x10
+#define BMP380_REG_STATUS		0x03
+#define BMP380_REG_ERROR		0x02
+#define BMP380_REG_ID			0x00
+
+#define BMP380_REG_FIFO_CONFIG_1	0x18
+#define BMP380_REG_FIFO_CONFIG_2	0x17
+#define BMP380_REG_FIFO_WATERMARK_MSB	0x16
+#define BMP380_REG_FIFO_WATERMARK_LSB	0x15
+#define BMP380_REG_FIFO_DATA		0x14
+#define BMP380_REG_FIFO_LENGTH_MSB	0x13
+#define BMP380_REG_FIFO_LENGTH_LSB	0x12
+
+#define BMP380_REG_SENSOR_TIME_MSB	0x0E
+#define BMP380_REG_SENSOR_TIME_LSB	0x0D
+#define BMP380_REG_SENSOR_TIME_XLSB	0x0C
+
+#define BMP380_REG_TEMP_MSB		0x09
+#define BMP380_REG_TEMP_LSB		0x08
+#define BMP380_REG_TEMP_XLSB		0x07
+
+#define BMP380_REG_PRESS_MSB		0x06
+#define BMP380_REG_PRESS_LSB		0x05
+#define BMP380_REG_PRESS_XLSB		0x04
+
+#define BMP380_REG_CALIB_TEMP_START	0x31
+#define BMP380_CALIB_REG_COUNT		21
+
+#define BMP380_FILTER_MASK		GENMASK(3, 1)
+#define BMP380_FILTER_OFF		0
+#define BMP380_FILTER_1X		1
+#define BMP380_FILTER_3X		2
+#define BMP380_FILTER_7X		3
+#define BMP380_FILTER_15X		4
+#define BMP380_FILTER_31X		5
+#define BMP380_FILTER_63X		6
+#define BMP380_FILTER_127X		7
+
+#define BMP380_OSRS_TEMP_MASK		GENMASK(5, 3)
+#define BMP380_OSRS_PRESS_MASK		GENMASK(2, 0)
+
+#define BMP380_ODRS_MASK		GENMASK(4, 0)
+
+#define BMP380_CTRL_SENSORS_MASK	GENMASK(1, 0)
+#define BMP380_CTRL_SENSORS_PRESS_EN	BIT(0)
+#define BMP380_CTRL_SENSORS_TEMP_EN	BIT(1)
+#define BMP380_MODE_MASK		GENMASK(5, 4)
+#define BMP380_MODE_SLEEP		0
+#define BMP380_MODE_FORCED		1
+#define BMP380_MODE_NORMAL		3
+
+#define BMP380_MIN_TEMP			-4000
+#define BMP380_MAX_TEMP			8500
+#define BMP380_MIN_PRES			3000000
+#define BMP380_MAX_PRES			12500000
+
+#define BMP380_CMD_NOOP			0x00
+#define BMP380_CMD_EXTMODE_EN_MID	0x34
+#define BMP380_CMD_FIFO_FLUSH		0xB0
+#define BMP380_CMD_SOFT_RESET		0xB6
+
+#define BMP380_STATUS_CMD_RDY_MASK	BIT(4)
+#define BMP380_STATUS_DRDY_PRESS_MASK	BIT(5)
+#define BMP380_STATUS_DRDY_TEMP_MASK	BIT(6)
+
+#define BMP380_ERR_FATAL_MASK		BIT(0)
+#define BMP380_ERR_CMD_MASK		BIT(1)
+#define BMP380_ERR_CONF_MASK		BIT(2)
+
+#define BMP380_TEMP_SKIPPED		0x800000
+#define BMP380_PRESS_SKIPPED		0x800000
+
 /* BMP280 specific registers */
 #define BMP280_REG_HUMIDITY_LSB		0xFE
 #define BMP280_REG_HUMIDITY_MSB		0xFD
@@ -13,6 +94,9 @@
 #define BMP280_REG_PRESS_LSB		0xF8
 #define BMP280_REG_PRESS_MSB		0xF7
 
+/* Helper mask to truncate excess 4 bits on pressure and temp readings */
+#define BMP280_MEAS_TRIM_MASK		GENMASK(24, 4)
+
 #define BMP280_REG_CONFIG		0xF5
 #define BMP280_REG_CTRL_MEAS		0xF4
 #define BMP280_REG_STATUS		0xF3
@@ -32,44 +116,46 @@
 #define BMP280_REG_COMP_PRESS_START	0x8E
 #define BMP280_COMP_PRESS_REG_COUNT	18
 
-#define BMP280_FILTER_MASK		(BIT(4) | BIT(3) | BIT(2))
+#define BMP280_COMP_H5_MASK		GENMASK(15, 4)
+
+#define BMP280_CONTIGUOUS_CALIB_REGS	(BMP280_COMP_TEMP_REG_COUNT + \
+					 BMP280_COMP_PRESS_REG_COUNT)
+
+#define BMP280_FILTER_MASK		GENMASK(4, 2)
 #define BMP280_FILTER_OFF		0
-#define BMP280_FILTER_2X		BIT(2)
-#define BMP280_FILTER_4X		BIT(3)
-#define BMP280_FILTER_8X		(BIT(3) | BIT(2))
-#define BMP280_FILTER_16X		BIT(4)
+#define BMP280_FILTER_2X		1
+#define BMP280_FILTER_4X		2
+#define BMP280_FILTER_8X		3
+#define BMP280_FILTER_16X		4
 
-#define BMP280_OSRS_HUMIDITY_MASK	(BIT(2) | BIT(1) | BIT(0))
-#define BMP280_OSRS_HUMIDITIY_X(osrs_h)	((osrs_h) << 0)
+#define BMP280_OSRS_HUMIDITY_MASK	GENMASK(2, 0)
 #define BMP280_OSRS_HUMIDITY_SKIP	0
-#define BMP280_OSRS_HUMIDITY_1X		BMP280_OSRS_HUMIDITIY_X(1)
-#define BMP280_OSRS_HUMIDITY_2X		BMP280_OSRS_HUMIDITIY_X(2)
-#define BMP280_OSRS_HUMIDITY_4X		BMP280_OSRS_HUMIDITIY_X(3)
-#define BMP280_OSRS_HUMIDITY_8X		BMP280_OSRS_HUMIDITIY_X(4)
-#define BMP280_OSRS_HUMIDITY_16X	BMP280_OSRS_HUMIDITIY_X(5)
+#define BMP280_OSRS_HUMIDITY_1X		1
+#define BMP280_OSRS_HUMIDITY_2X		2
+#define BMP280_OSRS_HUMIDITY_4X		3
+#define BMP280_OSRS_HUMIDITY_8X		4
+#define BMP280_OSRS_HUMIDITY_16X	5
 
-#define BMP280_OSRS_TEMP_MASK		(BIT(7) | BIT(6) | BIT(5))
+#define BMP280_OSRS_TEMP_MASK		GENMASK(7, 5)
 #define BMP280_OSRS_TEMP_SKIP		0
-#define BMP280_OSRS_TEMP_X(osrs_t)	((osrs_t) << 5)
-#define BMP280_OSRS_TEMP_1X		BMP280_OSRS_TEMP_X(1)
-#define BMP280_OSRS_TEMP_2X		BMP280_OSRS_TEMP_X(2)
-#define BMP280_OSRS_TEMP_4X		BMP280_OSRS_TEMP_X(3)
-#define BMP280_OSRS_TEMP_8X		BMP280_OSRS_TEMP_X(4)
-#define BMP280_OSRS_TEMP_16X		BMP280_OSRS_TEMP_X(5)
-
-#define BMP280_OSRS_PRESS_MASK		(BIT(4) | BIT(3) | BIT(2))
+#define BMP280_OSRS_TEMP_1X		1
+#define BMP280_OSRS_TEMP_2X		2
+#define BMP280_OSRS_TEMP_4X		3
+#define BMP280_OSRS_TEMP_8X		4
+#define BMP280_OSRS_TEMP_16X		5
+
+#define BMP280_OSRS_PRESS_MASK		GENMASK(4, 2)
 #define BMP280_OSRS_PRESS_SKIP		0
-#define BMP280_OSRS_PRESS_X(osrs_p)	((osrs_p) << 2)
-#define BMP280_OSRS_PRESS_1X		BMP280_OSRS_PRESS_X(1)
-#define BMP280_OSRS_PRESS_2X		BMP280_OSRS_PRESS_X(2)
-#define BMP280_OSRS_PRESS_4X		BMP280_OSRS_PRESS_X(3)
-#define BMP280_OSRS_PRESS_8X		BMP280_OSRS_PRESS_X(4)
-#define BMP280_OSRS_PRESS_16X		BMP280_OSRS_PRESS_X(5)
-
-#define BMP280_MODE_MASK		(BIT(1) | BIT(0))
+#define BMP280_OSRS_PRESS_1X		1
+#define BMP280_OSRS_PRESS_2X		2
+#define BMP280_OSRS_PRESS_4X		3
+#define BMP280_OSRS_PRESS_8X		4
+#define BMP280_OSRS_PRESS_16X		5
+
+#define BMP280_MODE_MASK		GENMASK(1, 0)
 #define BMP280_MODE_SLEEP		0
-#define BMP280_MODE_FORCED		BIT(0)
-#define BMP280_MODE_NORMAL		(BIT(1) | BIT(0))
+#define BMP280_MODE_FORCED		1
+#define BMP280_MODE_NORMAL		3
 
 /* BMP180 specific registers */
 #define BMP180_REG_OUT_XLSB		0xF8
@@ -79,19 +165,22 @@
 #define BMP180_REG_CALIB_START		0xAA
 #define BMP180_REG_CALIB_COUNT		22
 
+#define BMP180_MEAS_CTRL_MASK		GENMASK(4, 0)
+#define BMP180_MEAS_TEMP		0x0E
+#define BMP180_MEAS_PRESS		0x14
 #define BMP180_MEAS_SCO			BIT(5)
-#define BMP180_MEAS_TEMP		(0x0E | BMP180_MEAS_SCO)
-#define BMP180_MEAS_PRESS_X(oss)	((oss) << 6 | 0x14 | BMP180_MEAS_SCO)
-#define BMP180_MEAS_PRESS_1X		BMP180_MEAS_PRESS_X(0)
-#define BMP180_MEAS_PRESS_2X		BMP180_MEAS_PRESS_X(1)
-#define BMP180_MEAS_PRESS_4X		BMP180_MEAS_PRESS_X(2)
-#define BMP180_MEAS_PRESS_8X		BMP180_MEAS_PRESS_X(3)
+#define BMP180_OSRS_PRESS_MASK		GENMASK(7, 6)
+#define BMP180_MEAS_PRESS_1X		0
+#define BMP180_MEAS_PRESS_2X		1
+#define BMP180_MEAS_PRESS_4X		2
+#define BMP180_MEAS_PRESS_8X		3
 
 /* BMP180 and BMP280 common registers */
 #define BMP280_REG_CTRL_MEAS		0xF4
 #define BMP280_REG_RESET		0xE0
 #define BMP280_REG_ID			0xD0
 
+#define BMP380_CHIP_ID			0x50
 #define BMP180_CHIP_ID			0x55
 #define BMP280_CHIP_ID			0x58
 #define BME280_CHIP_ID			0x60
@@ -105,6 +194,7 @@
 /* Regmap configurations */
 extern const struct regmap_config bmp180_regmap_config;
 extern const struct regmap_config bmp280_regmap_config;
+extern const struct regmap_config bmp380_regmap_config;
 
 /* Probe called from different transports */
 int bmp280_common_probe(struct device *dev,
diff --git a/drivers/iio/pressure/cros_ec_baro.c b/drivers/iio/pressure/cros_ec_baro.c
index b521bebd551c..2649c2f89e89 100644
--- a/drivers/iio/pressure/cros_ec_baro.c
+++ b/drivers/iio/pressure/cros_ec_baro.c
@@ -14,6 +14,7 @@
 #include <linux/iio/triggered_buffer.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/slab.h>
 #include <linux/platform_data/cros_ec_commands.h>
@@ -96,8 +97,11 @@ static int cros_ec_baro_write(struct iio_dev *indio_dev,
 		/* Always roundup, so caller gets at least what it asks for. */
 		st->core.param.sensor_range.roundup = 1;
 
-		if (cros_ec_motion_send_host_cmd(&st->core, 0))
-			ret = -EIO;
+		ret = cros_ec_motion_send_host_cmd(&st->core, 0);
+		if (ret == 0) {
+			st->core.range_updated = true;
+			st->core.curr_range = val;
+		}
 		break;
 	default:
 		ret = cros_ec_sensors_core_write(&st->core, chan, val, val2,
@@ -134,21 +138,19 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
 	if (!indio_dev)
 		return -ENOMEM;
 
-	ret = cros_ec_sensors_core_init(pdev, indio_dev, true);
+	ret = cros_ec_sensors_core_init(pdev, indio_dev, true,
+					cros_ec_sensors_capture);
 	if (ret)
 		return ret;
 
 	indio_dev->info = &cros_ec_baro_info;
 	state = iio_priv(indio_dev);
-	state->core.type = state->core.resp->info.type;
-	state->core.loc = state->core.resp->info.location;
 	channel = state->channels;
 	/* Common part */
 	channel->info_mask_separate = BIT(IIO_CHAN_INFO_RAW);
 	channel->info_mask_shared_by_all =
 		BIT(IIO_CHAN_INFO_SCALE) |
-		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
-		BIT(IIO_CHAN_INFO_FREQUENCY);
+		BIT(IIO_CHAN_INFO_SAMP_FREQ);
 	channel->info_mask_shared_by_all_available =
 		BIT(IIO_CHAN_INFO_SAMP_FREQ);
 	channel->scan_type.realbits = CROS_EC_SENSOR_BITS;
@@ -182,12 +184,8 @@ static int cros_ec_baro_probe(struct platform_device *pdev)
 
 	state->core.read_ec_sensors_data = cros_ec_sensors_read_cmd;
 
-	ret = devm_iio_triggered_buffer_setup(dev, indio_dev, NULL,
-					      cros_ec_sensors_capture, NULL);
-	if (ret)
-		return ret;
-
-	return devm_iio_device_register(dev, indio_dev);
+	return cros_ec_sensors_core_register(dev, indio_dev,
+					     cros_ec_sensors_push_data);
 }
 
 static const struct platform_device_id cros_ec_baro_ids[] = {
@@ -201,6 +199,7 @@ MODULE_DEVICE_TABLE(platform, cros_ec_baro_ids);
 static struct platform_driver cros_ec_baro_platform_driver = {
 	.driver = {
 		.name	= "cros-ec-baro",
+		.pm	= &cros_ec_sensors_pm_ops,
 	},
 	.probe		= cros_ec_baro_probe,
 	.id_table	= cros_ec_baro_ids,
diff --git a/drivers/iio/pressure/dlhl60d.c b/drivers/iio/pressure/dlhl60d.c
index b8c99e7bd6cf..f0b0d198c6d4 100644
--- a/drivers/iio/pressure/dlhl60d.c
+++ b/drivers/iio/pressure/dlhl60d.c
@@ -5,7 +5,7 @@
  * Copyright (c) 2019 AVL DiTEST GmbH
  *   Tomislav Denis <tomislav.denis@avl.com>
  *
- * Datasheet: http://www.allsensors.com/cad/DS-0355_Rev_B.PDF
+ * Datasheet: https://www.allsensors.com/cad/DS-0355_Rev_B.PDF
  */
 
 #include <linux/module.h>
@@ -47,7 +47,7 @@ struct dlh_state {
 	struct dlh_info info;
 	bool use_interrupt;
 	struct completion completion;
-	u8 rx_buf[DLH_NUM_READ_BYTES] ____cacheline_aligned;
+	u8 rx_buf[DLH_NUM_READ_BYTES];
 };
 
 static struct dlh_info dlh_info_tbl[] = {
@@ -129,9 +129,8 @@ static int dlh_read_direct(struct dlh_state *st,
 	if (ret)
 		return ret;
 
-	*pressure = get_unaligned_be32(&st->rx_buf[1]) >> 8;
-	*temperature = get_unaligned_be32(&st->rx_buf[3]) &
-		GENMASK(DLH_NUM_TEMP_BITS - 1, 0);
+	*pressure = get_unaligned_be24(&st->rx_buf[1]);
+	*temperature = get_unaligned_be24(&st->rx_buf[4]);
 
 	return 0;
 }
@@ -311,8 +310,6 @@ static int dlh_probe(struct i2c_client *client,
 	st->use_interrupt = false;
 
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->dev.of_node = client->dev.of_node;
 	indio_dev->info = &dlh_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels =  dlh_channels;
diff --git a/drivers/iio/pressure/dps310.c b/drivers/iio/pressure/dps310.c
index 2c1943bbc433..984a3f511a1a 100644
--- a/drivers/iio/pressure/dps310.c
+++ b/drivers/iio/pressure/dps310.c
@@ -89,6 +89,7 @@ struct dps310_data {
 	s32 c00, c10, c20, c30, c01, c11, c21;
 	s32 pressure_raw;
 	s32 temp_raw;
+	bool timeout_recovery_failed;
 };
 
 static const struct iio_chan_spec dps310_channels[] = {
@@ -159,6 +160,102 @@ static int dps310_get_coefs(struct dps310_data *data)
 	return 0;
 }
 
+/*
+ * Some versions of the chip will read temperatures in the ~60C range when
+ * it's actually ~20C. This is the manufacturer recommended workaround
+ * to correct the issue. The registers used below are undocumented.
+ */
+static int dps310_temp_workaround(struct dps310_data *data)
+{
+	int rc;
+	int reg;
+
+	rc = regmap_read(data->regmap, 0x32, &reg);
+	if (rc)
+		return rc;
+
+	/*
+	 * If bit 1 is set then the device is okay, and the workaround does not
+	 * need to be applied
+	 */
+	if (reg & BIT(1))
+		return 0;
+
+	rc = regmap_write(data->regmap, 0x0e, 0xA5);
+	if (rc)
+		return rc;
+
+	rc = regmap_write(data->regmap, 0x0f, 0x96);
+	if (rc)
+		return rc;
+
+	rc = regmap_write(data->regmap, 0x62, 0x02);
+	if (rc)
+		return rc;
+
+	rc = regmap_write(data->regmap, 0x0e, 0x00);
+	if (rc)
+		return rc;
+
+	return regmap_write(data->regmap, 0x0f, 0x00);
+}
+
+static int dps310_startup(struct dps310_data *data)
+{
+	int rc;
+	int ready;
+
+	/*
+	 * Set up pressure sensor in single sample, one measurement per second
+	 * mode
+	 */
+	rc = regmap_write(data->regmap, DPS310_PRS_CFG, 0);
+	if (rc)
+		return rc;
+
+	/*
+	 * Set up external (MEMS) temperature sensor in single sample, one
+	 * measurement per second mode
+	 */
+	rc = regmap_write(data->regmap, DPS310_TMP_CFG, DPS310_TMP_EXT);
+	if (rc)
+		return rc;
+
+	/* Temp and pressure shifts are disabled when PRC <= 8 */
+	rc = regmap_write_bits(data->regmap, DPS310_CFG_REG,
+			       DPS310_PRS_SHIFT_EN | DPS310_TMP_SHIFT_EN, 0);
+	if (rc)
+		return rc;
+
+	/* MEAS_CFG doesn't update correctly unless first written with 0 */
+	rc = regmap_write_bits(data->regmap, DPS310_MEAS_CFG,
+			       DPS310_MEAS_CTRL_BITS, 0);
+	if (rc)
+		return rc;
+
+	/* Turn on temperature and pressure measurement in the background */
+	rc = regmap_write_bits(data->regmap, DPS310_MEAS_CFG,
+			       DPS310_MEAS_CTRL_BITS, DPS310_PRS_EN |
+			       DPS310_TEMP_EN | DPS310_BACKGROUND);
+	if (rc)
+		return rc;
+
+	/*
+	 * Calibration coefficients required for reporting temperature.
+	 * They are available 40ms after the device has started
+	 */
+	rc = regmap_read_poll_timeout(data->regmap, DPS310_MEAS_CFG, ready,
+				      ready & DPS310_COEF_RDY, 10000, 40000);
+	if (rc)
+		return rc;
+
+	rc = dps310_get_coefs(data);
+	if (rc)
+		return rc;
+
+	return dps310_temp_workaround(data);
+}
+
 static int dps310_get_pres_precision(struct dps310_data *data)
 {
 	int rc;
@@ -297,11 +394,69 @@ static int dps310_get_temp_k(struct dps310_data *data)
 	return scale_factors[ilog2(rc)];
 }
 
+static int dps310_reset_wait(struct dps310_data *data)
+{
+	int rc;
+
+	rc = regmap_write(data->regmap, DPS310_RESET, DPS310_RESET_MAGIC);
+	if (rc)
+		return rc;
+
+	/* Wait for device chip access: 2.5ms in specification */
+	usleep_range(2500, 12000);
+	return 0;
+}
+
+static int dps310_reset_reinit(struct dps310_data *data)
+{
+	int rc;
+
+	rc = dps310_reset_wait(data);
+	if (rc)
+		return rc;
+
+	return dps310_startup(data);
+}
+
+static int dps310_ready_status(struct dps310_data *data, int ready_bit, int timeout)
+{
+	int sleep = DPS310_POLL_SLEEP_US(timeout);
+	int ready;
+
+	return regmap_read_poll_timeout(data->regmap, DPS310_MEAS_CFG, ready, ready & ready_bit,
+					sleep, timeout);
+}
+
+static int dps310_ready(struct dps310_data *data, int ready_bit, int timeout)
+{
+	int rc;
+
+	rc = dps310_ready_status(data, ready_bit, timeout);
+	if (rc) {
+		if (rc == -ETIMEDOUT && !data->timeout_recovery_failed) {
+			/* Reset and reinitialize the chip. */
+			if (dps310_reset_reinit(data)) {
+				data->timeout_recovery_failed = true;
+			} else {
+				/* Try again to get sensor ready status. */
+				if (dps310_ready_status(data, ready_bit, timeout))
+					data->timeout_recovery_failed = true;
+				else
+					return 0;
+			}
+		}
+
+		return rc;
+	}
+
+	data->timeout_recovery_failed = false;
+	return 0;
+}
+
 static int dps310_read_pres_raw(struct dps310_data *data)
 {
 	int rc;
 	int rate;
-	int ready;
 	int timeout;
 	s32 raw;
 	u8 val[3];
@@ -313,9 +468,7 @@ static int dps310_read_pres_raw(struct dps310_data *data)
 	timeout = DPS310_POLL_TIMEOUT_US(rate);
 
 	/* Poll for sensor readiness; base the timeout upon the sample rate. */
-	rc = regmap_read_poll_timeout(data->regmap, DPS310_MEAS_CFG, ready,
-				      ready & DPS310_PRS_RDY,
-				      DPS310_POLL_SLEEP_US(timeout), timeout);
+	rc = dps310_ready(data, DPS310_PRS_RDY, timeout);
 	if (rc)
 		goto done;
 
@@ -352,7 +505,6 @@ static int dps310_read_temp_raw(struct dps310_data *data)
 {
 	int rc;
 	int rate;
-	int ready;
 	int timeout;
 
 	if (mutex_lock_interruptible(&data->lock))
@@ -362,10 +514,8 @@ static int dps310_read_temp_raw(struct dps310_data *data)
 	timeout = DPS310_POLL_TIMEOUT_US(rate);
 
 	/* Poll for sensor readiness; base the timeout upon the sample rate. */
-	rc = regmap_read_poll_timeout(data->regmap, DPS310_MEAS_CFG, ready,
-				      ready & DPS310_TMP_RDY,
-				      DPS310_POLL_SLEEP_US(timeout), timeout);
-	if (rc < 0)
+	rc = dps310_ready(data, DPS310_TMP_RDY, timeout);
+	if (rc)
 		goto done;
 
 	rc = dps310_read_temp_ready(data);
@@ -660,7 +810,7 @@ static void dps310_reset(void *action_data)
 {
 	struct dps310_data *data = action_data;
 
-	regmap_write(data->regmap, DPS310_RESET, DPS310_RESET_MAGIC);
+	dps310_reset_wait(data);
 }
 
 static const struct regmap_config dps310_regmap_config = {
@@ -677,52 +827,12 @@ static const struct iio_info dps310_info = {
 	.write_raw = dps310_write_raw,
 };
 
-/*
- * Some verions of chip will read temperatures in the ~60C range when
- * its actually ~20C. This is the manufacturer recommended workaround
- * to correct the issue. The registers used below are undocumented.
- */
-static int dps310_temp_workaround(struct dps310_data *data)
-{
-	int rc;
-	int reg;
-
-	rc = regmap_read(data->regmap, 0x32, &reg);
-	if (rc < 0)
-		return rc;
-
-	/*
-	 * If bit 1 is set then the device is okay, and the workaround does not
-	 * need to be applied
-	 */
-	if (reg & BIT(1))
-		return 0;
-
-	rc = regmap_write(data->regmap, 0x0e, 0xA5);
-	if (rc < 0)
-		return rc;
-
-	rc = regmap_write(data->regmap, 0x0f, 0x96);
-	if (rc < 0)
-		return rc;
-
-	rc = regmap_write(data->regmap, 0x62, 0x02);
-	if (rc < 0)
-		return rc;
-
-	rc = regmap_write(data->regmap, 0x0e, 0x00);
-	if (rc < 0)
-		return rc;
-
-	return regmap_write(data->regmap, 0x0f, 0x00);
-}
-
 static int dps310_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
 	struct dps310_data *data;
 	struct iio_dev *iio;
-	int rc, ready;
+	int rc;
 
 	iio = devm_iio_device_alloc(&client->dev,  sizeof(*data));
 	if (!iio)
@@ -732,7 +842,6 @@ static int dps310_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	iio->dev.parent = &client->dev;
 	iio->name = id->name;
 	iio->channels = dps310_channels;
 	iio->num_channels = ARRAY_SIZE(dps310_channels);
@@ -748,54 +857,8 @@ static int dps310_probe(struct i2c_client *client,
 	if (rc)
 		return rc;
 
-	/*
-	 * Set up pressure sensor in single sample, one measurement per second
-	 * mode
-	 */
-	rc = regmap_write(data->regmap, DPS310_PRS_CFG, 0);
-
-	/*
-	 * Set up external (MEMS) temperature sensor in single sample, one
-	 * measurement per second mode
-	 */
-	rc = regmap_write(data->regmap, DPS310_TMP_CFG, DPS310_TMP_EXT);
-	if (rc < 0)
-		return rc;
-
-	/* Temp and pressure shifts are disabled when PRC <= 8 */
-	rc = regmap_write_bits(data->regmap, DPS310_CFG_REG,
-			       DPS310_PRS_SHIFT_EN | DPS310_TMP_SHIFT_EN, 0);
-	if (rc < 0)
-		return rc;
-
-	/* MEAS_CFG doesn't update correctly unless first written with 0 */
-	rc = regmap_write_bits(data->regmap, DPS310_MEAS_CFG,
-			       DPS310_MEAS_CTRL_BITS, 0);
-	if (rc < 0)
-		return rc;
-
-	/* Turn on temperature and pressure measurement in the background */
-	rc = regmap_write_bits(data->regmap, DPS310_MEAS_CFG,
-			       DPS310_MEAS_CTRL_BITS, DPS310_PRS_EN |
-			       DPS310_TEMP_EN | DPS310_BACKGROUND);
-	if (rc < 0)
-		return rc;
-
-	/*
-	 * Calibration coefficients required for reporting temperature.
-	 * They are available 40ms after the device has started
-	 */
-	rc = regmap_read_poll_timeout(data->regmap, DPS310_MEAS_CFG, ready,
-				      ready & DPS310_COEF_RDY, 10000, 40000);
-	if (rc < 0)
-		return rc;
-
-	rc = dps310_get_coefs(data);
-	if (rc < 0)
-		return rc;
-
-	rc = dps310_temp_workaround(data);
-	if (rc < 0)
+	rc = dps310_startup(data);
+	if (rc)
 		return rc;
 
 	rc = devm_iio_device_register(&client->dev, iio);
@@ -813,9 +876,16 @@ static const struct i2c_device_id dps310_id[] = {
 };
 MODULE_DEVICE_TABLE(i2c, dps310_id);
 
+static const struct acpi_device_id dps310_acpi_match[] = {
+	{ "IFX3100" },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, dps310_acpi_match);
+
 static struct i2c_driver dps310_driver = {
 	.driver = {
 		.name = DPS310_DEV_NAME,
+		.acpi_match_table = dps310_acpi_match,
 	},
 	.probe = dps310_probe,
 	.id_table = dps310_id,
diff --git a/drivers/iio/pressure/hid-sensor-press.c b/drivers/iio/pressure/hid-sensor-press.c
index 953235052155..a9215eb32d70 100644
--- a/drivers/iio/pressure/hid-sensor-press.c
+++ b/drivers/iio/pressure/hid-sensor-press.c
@@ -6,29 +6,36 @@
 #include <linux/device.h>
 #include <linux/platform_device.h>
 #include <linux/module.h>
-#include <linux/interrupt.h>
-#include <linux/irq.h>
+#include <linux/mod_devicetable.h>
 #include <linux/slab.h>
-#include <linux/delay.h>
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
 #include "../common/hid-sensors/hid-sensor-trigger.h"
 
-#define CHANNEL_SCAN_INDEX_PRESSURE 0
+enum {
+	CHANNEL_SCAN_INDEX_PRESSURE,
+	CHANNEL_SCAN_INDEX_TIMESTAMP,
+};
 
 struct press_state {
 	struct hid_sensor_hub_callbacks callbacks;
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info press_attr;
-	u32 press_data;
+	struct {
+		u32 press_data;
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
+	s64 timestamp;
+};
+
+static const u32 press_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ATMOSPHERIC_PRESSURE,
+	HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE
 };
 
 /* Channel definitions */
@@ -41,7 +48,9 @@ static const struct iio_chan_spec press_channels[] = {
 		BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 		BIT(IIO_CHAN_INFO_HYSTERESIS),
 		.scan_index = CHANNEL_SCAN_INDEX_PRESSURE,
-	}
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(CHANNEL_SCAN_INDEX_TIMESTAMP)
+
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -154,14 +163,6 @@ static const struct iio_info press_info = {
 	.write_raw = &press_write_raw,
 };
 
-/* Function to push data to buffer */
-static void hid_sensor_push_data(struct iio_dev *indio_dev, const void *data,
-					int len)
-{
-	dev_dbg(&indio_dev->dev, "hid_sensor_push_data\n");
-	iio_push_to_buffers(indio_dev, data);
-}
-
 /* Callback handler to send event after all samples are received and captured */
 static int press_proc_event(struct hid_sensor_hub_device *hsdev,
 				unsigned usage_id,
@@ -171,10 +172,13 @@ static int press_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct press_state *press_state = iio_priv(indio_dev);
 
 	dev_dbg(&indio_dev->dev, "press_proc_event\n");
-	if (atomic_read(&press_state->common_attributes.data_ready))
-		hid_sensor_push_data(indio_dev,
-				&press_state->press_data,
-				sizeof(press_state->press_data));
+	if (atomic_read(&press_state->common_attributes.data_ready)) {
+		if (!press_state->timestamp)
+			press_state->timestamp = iio_get_time_ns(indio_dev);
+
+		iio_push_to_buffers_with_timestamp(
+			indio_dev, &press_state->scan, press_state->timestamp);
+	}
 
 	return 0;
 }
@@ -191,9 +195,13 @@ static int press_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_ATMOSPHERIC_PRESSURE:
-		press_state->press_data = *(u32 *)raw_data;
+		press_state->scan.press_data = *(u32 *)raw_data;
 		ret = 0;
 		break;
+	case HID_USAGE_SENSOR_TIME_TIMESTAMP:
+		press_state->timestamp = hid_sensor_convert_timestamp(
+			&press_state->common_attributes, *(s64 *)raw_data);
+		break;
 	default:
 		break;
 	}
@@ -227,17 +235,6 @@ static int press_parse_report(struct platform_device *pdev,
 				&st->press_attr,
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0) {
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ATMOSPHERIC_PRESSURE,
-			&st->common_attributes.sensitivity);
-		dev_dbg(&pdev->dev, "Sensitivity index:report %d:%d\n",
-			st->common_attributes.sensitivity.index,
-			st->common_attributes.sensitivity.report_id);
-	}
 	return ret;
 }
 
@@ -262,14 +259,16 @@ static int hid_press_probe(struct platform_device *pdev)
 
 	ret = hid_sensor_parse_common_attributes(hsdev,
 					HID_USAGE_SENSOR_PRESSURE,
-					&press_state->common_attributes);
+					&press_state->common_attributes,
+					press_sensitivity_addresses,
+					ARRAY_SIZE(press_sensitivity_addresses));
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup common attributes\n");
 		return ret;
 	}
 
-	indio_dev->channels = kmemdup(press_channels, sizeof(press_channels),
-				      GFP_KERNEL);
+	indio_dev->channels = devm_kmemdup(&pdev->dev, press_channels,
+					   sizeof(press_channels), GFP_KERNEL);
 	if (!indio_dev->channels) {
 		dev_err(&pdev->dev, "failed to duplicate channels\n");
 		return -ENOMEM;
@@ -280,28 +279,22 @@ static int hid_press_probe(struct platform_device *pdev)
 				 HID_USAGE_SENSOR_PRESSURE, press_state);
 	if (ret) {
 		dev_err(&pdev->dev, "failed to setup attributes\n");
-		goto error_free_dev_mem;
+		return ret;
 	}
 
 	indio_dev->num_channels =
 				ARRAY_SIZE(press_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &press_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
-		NULL, NULL);
-	if (ret) {
-		dev_err(&pdev->dev, "failed to initialize trigger buffer\n");
-		goto error_free_dev_mem;
-	}
 	atomic_set(&press_state->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&press_state->common_attributes);
 	if (ret) {
 		dev_err(&pdev->dev, "trigger setup failed\n");
-		goto error_unreg_buffer_funcs;
+		return ret;
 	}
 
 	ret = iio_device_register(indio_dev);
@@ -325,11 +318,7 @@ static int hid_press_probe(struct platform_device *pdev)
 error_iio_unreg:
 	iio_device_unregister(indio_dev);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&press_state->common_attributes);
-error_unreg_buffer_funcs:
-	iio_triggered_buffer_cleanup(indio_dev);
-error_free_dev_mem:
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
 	return ret;
 }
 
@@ -342,9 +331,7 @@ static int hid_press_remove(struct platform_device *pdev)
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_PRESSURE);
 	iio_device_unregister(indio_dev);
-	hid_sensor_remove_trigger(&press_state->common_attributes);
-	iio_triggered_buffer_cleanup(indio_dev);
-	kfree(indio_dev->channels);
+	hid_sensor_remove_trigger(indio_dev, &press_state->common_attributes);
 
 	return 0;
 }
@@ -372,3 +359,4 @@ module_platform_driver(hid_press_platform_driver);
 MODULE_DESCRIPTION("HID Sensor Pressure");
 MODULE_AUTHOR("Archana Patni <archana.patni@intel.com>");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/pressure/hp03.c b/drivers/iio/pressure/hp03.c
index 026ba15ef68f..9538118c9648 100644
--- a/drivers/iio/pressure/hp03.c
+++ b/drivers/iio/pressure/hp03.c
@@ -224,7 +224,6 @@ static int hp03_probe(struct i2c_client *client,
 	priv->client = client;
 	mutex_init(&priv->lock);
 
-	indio_dev->dev.parent = dev;
 	indio_dev->name = id->name;
 	indio_dev->channels = hp03_channels;
 	indio_dev->num_channels = ARRAY_SIZE(hp03_channels);
@@ -243,47 +242,26 @@ static int hp03_probe(struct i2c_client *client,
 	 * which has it's dedicated I2C address and contains
 	 * the calibration constants for the sensor.
 	 */
-	priv->eeprom_client = i2c_new_dummy_device(client->adapter, HP03_EEPROM_ADDR);
+	priv->eeprom_client = devm_i2c_new_dummy_device(dev, client->adapter,
+							HP03_EEPROM_ADDR);
 	if (IS_ERR(priv->eeprom_client)) {
 		dev_err(dev, "New EEPROM I2C device failed\n");
 		return PTR_ERR(priv->eeprom_client);
 	}
 
-	priv->eeprom_regmap = regmap_init_i2c(priv->eeprom_client,
-					      &hp03_regmap_config);
+	priv->eeprom_regmap = devm_regmap_init_i2c(priv->eeprom_client,
+						   &hp03_regmap_config);
 	if (IS_ERR(priv->eeprom_regmap)) {
 		dev_err(dev, "Failed to allocate EEPROM regmap\n");
-		ret = PTR_ERR(priv->eeprom_regmap);
-		goto err_cleanup_eeprom_client;
+		return PTR_ERR(priv->eeprom_regmap);
 	}
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret) {
 		dev_err(dev, "Failed to register IIO device\n");
-		goto err_cleanup_eeprom_regmap;
+		return ret;
 	}
 
-	i2c_set_clientdata(client, indio_dev);
-
-	return 0;
-
-err_cleanup_eeprom_regmap:
-	regmap_exit(priv->eeprom_regmap);
-
-err_cleanup_eeprom_client:
-	i2c_unregister_device(priv->eeprom_client);
-	return ret;
-}
-
-static int hp03_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct hp03_priv *priv = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	regmap_exit(priv->eeprom_regmap);
-	i2c_unregister_device(priv->eeprom_client);
-
 	return 0;
 }
 
@@ -305,7 +283,6 @@ static struct i2c_driver hp03_driver = {
 		.of_match_table = hp03_of_match,
 	},
 	.probe		= hp03_probe,
-	.remove		= hp03_remove,
 	.id_table	= hp03_id,
 };
 module_i2c_driver(hp03_driver);
diff --git a/drivers/iio/pressure/hp206c.c b/drivers/iio/pressure/hp206c.c
index 3ac3632e7242..986b7a59712e 100644
--- a/drivers/iio/pressure/hp206c.c
+++ b/drivers/iio/pressure/hp206c.c
@@ -18,6 +18,8 @@
 #include <linux/util_macros.h>
 #include <linux/acpi.h>
 
+#include <asm/unaligned.h>
+
 /* I2C commands: */
 #define HP206C_CMD_SOFT_RST	0x06
 
@@ -93,12 +95,12 @@ static int hp206c_read_20bit(struct i2c_client *client, u8 cmd)
 	int ret;
 	u8 values[3];
 
-	ret = i2c_smbus_read_i2c_block_data(client, cmd, 3, values);
+	ret = i2c_smbus_read_i2c_block_data(client, cmd, sizeof(values), values);
 	if (ret < 0)
 		return ret;
-	if (ret != 3)
+	if (ret != sizeof(values))
 		return -EIO;
-	return ((values[0] & 0xF) << 16) | (values[1] << 8) | (values[2]);
+	return get_unaligned_be24(&values[0]) & GENMASK(19, 0);
 }
 
 /* Spin for max 160ms until DEV_RDY is 1, or return error. */
@@ -376,7 +378,6 @@ static int hp206c_probe(struct i2c_client *client,
 
 	indio_dev->info = &hp206c_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = hp206c_channels;
 	indio_dev->num_channels = ARRAY_SIZE(hp206c_channels);
diff --git a/drivers/iio/pressure/icp10100.c b/drivers/iio/pressure/icp10100.c
new file mode 100644
index 000000000000..b62f28585db5
--- /dev/null
+++ b/drivers/iio/pressure/icp10100.c
@@ -0,0 +1,659 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Copyright (C) 2020 InvenSense, Inc.
+ *
+ * Driver for InvenSense ICP-1010xx barometric pressure and temperature sensor.
+ *
+ * Datasheet:
+ * http://www.invensense.com/wp-content/uploads/2018/01/DS-000186-ICP-101xx-v1.2.pdf
+ */
+
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/mod_devicetable.h>
+#include <linux/i2c.h>
+#include <linux/pm_runtime.h>
+#include <linux/crc8.h>
+#include <linux/mutex.h>
+#include <linux/delay.h>
+#include <linux/log2.h>
+#include <linux/math64.h>
+#include <linux/regulator/consumer.h>
+#include <linux/iio/iio.h>
+
+#define ICP10100_ID_REG_GET(_reg)	((_reg) & 0x003F)
+#define ICP10100_ID_REG			0x08
+#define ICP10100_RESPONSE_WORD_LENGTH	3
+#define ICP10100_CRC8_WORD_LENGTH	2
+#define ICP10100_CRC8_POLYNOMIAL	0x31
+#define ICP10100_CRC8_INIT		0xFF
+
+enum icp10100_mode {
+	ICP10100_MODE_LP,	/* Low power mode: 1x sampling */
+	ICP10100_MODE_N,	/* Normal mode: 2x sampling */
+	ICP10100_MODE_LN,	/* Low noise mode: 4x sampling */
+	ICP10100_MODE_ULN,	/* Ultra low noise mode: 8x sampling */
+	ICP10100_MODE_NB,
+};
+
+struct icp10100_state {
+	struct mutex lock;
+	struct i2c_client *client;
+	struct regulator *vdd;
+	enum icp10100_mode mode;
+	int16_t cal[4];
+};
+
+struct icp10100_command {
+	__be16 cmd;
+	unsigned long wait_us;
+	unsigned long wait_max_us;
+	size_t response_word_nb;
+};
+
+static const struct icp10100_command icp10100_cmd_soft_reset = {
+	.cmd = cpu_to_be16(0x805D),
+	.wait_us = 170,
+	.wait_max_us = 200,
+	.response_word_nb = 0,
+};
+
+static const struct icp10100_command icp10100_cmd_read_id = {
+	.cmd = cpu_to_be16(0xEFC8),
+	.wait_us = 0,
+	.response_word_nb = 1,
+};
+
+static const struct icp10100_command icp10100_cmd_read_otp = {
+	.cmd = cpu_to_be16(0xC7F7),
+	.wait_us = 0,
+	.response_word_nb = 1,
+};
+
+static const struct icp10100_command icp10100_cmd_measure[] = {
+	[ICP10100_MODE_LP] = {
+		.cmd = cpu_to_be16(0x401A),
+		.wait_us = 1800,
+		.wait_max_us = 2000,
+		.response_word_nb = 3,
+	},
+	[ICP10100_MODE_N] = {
+		.cmd = cpu_to_be16(0x48A3),
+		.wait_us = 6300,
+		.wait_max_us = 6500,
+		.response_word_nb = 3,
+	},
+	[ICP10100_MODE_LN] = {
+		.cmd = cpu_to_be16(0x5059),
+		.wait_us = 23800,
+		.wait_max_us = 24000,
+		.response_word_nb = 3,
+	},
+	[ICP10100_MODE_ULN] = {
+		.cmd = cpu_to_be16(0x58E0),
+		.wait_us = 94500,
+		.wait_max_us = 94700,
+		.response_word_nb = 3,
+	},
+};
+
+static const uint8_t icp10100_switch_mode_otp[] =
+	{0xC5, 0x95, 0x00, 0x66, 0x9c};
+
+DECLARE_CRC8_TABLE(icp10100_crc8_table);
+
+static inline int icp10100_i2c_xfer(struct i2c_adapter *adap,
+				    struct i2c_msg *msgs, int num)
+{
+	int ret;
+
+	ret = i2c_transfer(adap, msgs, num);
+	if (ret < 0)
+		return ret;
+
+	if (ret != num)
+		return -EIO;
+
+	return 0;
+}
+
+static int icp10100_send_cmd(struct icp10100_state *st,
+			     const struct icp10100_command *cmd,
+			     __be16 *buf, size_t buf_len)
+{
+	size_t size = cmd->response_word_nb * ICP10100_RESPONSE_WORD_LENGTH;
+	uint8_t data[16];
+	uint8_t *ptr;
+	uint8_t *buf_ptr = (uint8_t *)buf;
+	struct i2c_msg msgs[2] = {
+		{
+			.addr = st->client->addr,
+			.flags = 0,
+			.len = 2,
+			.buf = (uint8_t *)&cmd->cmd,
+		}, {
+			.addr = st->client->addr,
+			.flags = I2C_M_RD,
+			.len = size,
+			.buf = data,
+		},
+	};
+	uint8_t crc;
+	unsigned int i;
+	int ret;
+
+	if (size > sizeof(data))
+		return -EINVAL;
+
+	if (cmd->response_word_nb > 0 &&
+			(buf == NULL || buf_len < (cmd->response_word_nb * 2)))
+		return -EINVAL;
+
+	dev_dbg(&st->client->dev, "sending cmd %#x\n", be16_to_cpu(cmd->cmd));
+
+	if (cmd->response_word_nb > 0 && cmd->wait_us == 0) {
+		/* direct command-response without waiting */
+		ret = icp10100_i2c_xfer(st->client->adapter, msgs,
+					ARRAY_SIZE(msgs));
+		if (ret)
+			return ret;
+	} else {
+		/* transfer command write */
+		ret = icp10100_i2c_xfer(st->client->adapter, &msgs[0], 1);
+		if (ret)
+			return ret;
+		if (cmd->wait_us > 0)
+			usleep_range(cmd->wait_us, cmd->wait_max_us);
+		/* transfer response read if needed */
+		if (cmd->response_word_nb > 0) {
+			ret = icp10100_i2c_xfer(st->client->adapter, &msgs[1], 1);
+			if (ret)
+				return ret;
+		} else {
+			return 0;
+		}
+	}
+
+	/* process read words with crc checking */
+	for (i = 0; i < cmd->response_word_nb; ++i) {
+		ptr = &data[i * ICP10100_RESPONSE_WORD_LENGTH];
+		crc = crc8(icp10100_crc8_table, ptr, ICP10100_CRC8_WORD_LENGTH,
+			   ICP10100_CRC8_INIT);
+		if (crc != ptr[ICP10100_CRC8_WORD_LENGTH]) {
+			dev_err(&st->client->dev, "crc error recv=%#x calc=%#x\n",
+				ptr[ICP10100_CRC8_WORD_LENGTH], crc);
+			return -EIO;
+		}
+		*buf_ptr++ = ptr[0];
+		*buf_ptr++ = ptr[1];
+	}
+
+	return 0;
+}
+
+static int icp10100_read_cal_otp(struct icp10100_state *st)
+{
+	__be16 val;
+	int i;
+	int ret;
+
+	/* switch into OTP read mode */
+	ret = i2c_master_send(st->client, icp10100_switch_mode_otp,
+			      ARRAY_SIZE(icp10100_switch_mode_otp));
+	if (ret < 0)
+		return ret;
+	if (ret != ARRAY_SIZE(icp10100_switch_mode_otp))
+		return -EIO;
+
+	/* read 4 calibration values */
+	for (i = 0; i < 4; ++i) {
+		ret = icp10100_send_cmd(st, &icp10100_cmd_read_otp,
+					&val, sizeof(val));
+		if (ret)
+			return ret;
+		st->cal[i] = be16_to_cpu(val);
+		dev_dbg(&st->client->dev, "cal[%d] = %d\n", i, st->cal[i]);
+	}
+
+	return 0;
+}
+
+static int icp10100_init_chip(struct icp10100_state *st)
+{
+	__be16 val;
+	uint16_t id;
+	int ret;
+
+	/* read and check id */
+	ret = icp10100_send_cmd(st, &icp10100_cmd_read_id, &val, sizeof(val));
+	if (ret)
+		return ret;
+	id = ICP10100_ID_REG_GET(be16_to_cpu(val));
+	if (id != ICP10100_ID_REG) {
+		dev_err(&st->client->dev, "invalid id %#x\n", id);
+		return -ENODEV;
+	}
+
+	/* read calibration data from OTP */
+	ret = icp10100_read_cal_otp(st);
+	if (ret)
+		return ret;
+
+	/* reset chip */
+	return icp10100_send_cmd(st, &icp10100_cmd_soft_reset, NULL, 0);
+}
+
+static int icp10100_get_measures(struct icp10100_state *st,
+				uint32_t *pressure, uint16_t *temperature)
+{
+	const struct icp10100_command *cmd;
+	__be16 measures[3];
+	int ret;
+
+	ret = pm_runtime_resume_and_get(&st->client->dev);
+	if (ret < 0)
+		return ret;
+
+	mutex_lock(&st->lock);
+	cmd = &icp10100_cmd_measure[st->mode];
+	ret = icp10100_send_cmd(st, cmd, measures, sizeof(measures));
+	mutex_unlock(&st->lock);
+	if (ret)
+		goto error_measure;
+
+	*pressure = (be16_to_cpu(measures[0]) << 8) |
+			(be16_to_cpu(measures[1]) >> 8);
+	*temperature = be16_to_cpu(measures[2]);
+
+	pm_runtime_mark_last_busy(&st->client->dev);
+error_measure:
+	pm_runtime_put_autosuspend(&st->client->dev);
+	return ret;
+}
+
+static uint32_t icp10100_get_pressure(struct icp10100_state *st,
+				      uint32_t raw_pressure, uint16_t raw_temp)
+{
+	static int32_t p_calib[] = {45000, 80000, 105000};
+	static int32_t lut_lower = 3670016;
+	static int32_t lut_upper = 12058624;
+	static int32_t inv_quadr_factor = 16777216;
+	static int32_t offset_factor = 2048;
+	int64_t val1, val2;
+	int32_t p_lut[3];
+	int32_t t, t_square;
+	int64_t a, b, c;
+	uint32_t pressure_mPa;
+
+	dev_dbg(&st->client->dev, "raw: pressure = %u, temp = %u\n",
+		raw_pressure, raw_temp);
+
+	/* compute p_lut values */
+	t = (int32_t)raw_temp - 32768;
+	t_square = t * t;
+	val1 = (int64_t)st->cal[0] * (int64_t)t_square;
+	p_lut[0] = lut_lower + (int32_t)div_s64(val1, inv_quadr_factor);
+	val1 = (int64_t)st->cal[1] * (int64_t)t_square;
+	p_lut[1] = offset_factor * st->cal[3] +
+			(int32_t)div_s64(val1, inv_quadr_factor);
+	val1 = (int64_t)st->cal[2] * (int64_t)t_square;
+	p_lut[2] = lut_upper + (int32_t)div_s64(val1, inv_quadr_factor);
+	dev_dbg(&st->client->dev, "p_lut = [%d, %d, %d]\n",
+		p_lut[0], p_lut[1], p_lut[2]);
+
+	/* compute a, b, c factors */
+	val1 = (int64_t)p_lut[0] * (int64_t)p_lut[1] *
+			(int64_t)(p_calib[0] - p_calib[1]) +
+		(int64_t)p_lut[1] * (int64_t)p_lut[2] *
+			(int64_t)(p_calib[1] - p_calib[2]) +
+		(int64_t)p_lut[2] * (int64_t)p_lut[0] *
+			(int64_t)(p_calib[2] - p_calib[0]);
+	val2 = (int64_t)p_lut[2] * (int64_t)(p_calib[0] - p_calib[1]) +
+		(int64_t)p_lut[0] * (int64_t)(p_calib[1] - p_calib[2]) +
+		(int64_t)p_lut[1] * (int64_t)(p_calib[2] - p_calib[0]);
+	c = div64_s64(val1, val2);
+	dev_dbg(&st->client->dev, "val1 = %lld, val2 = %lld, c = %lld\n",
+		val1, val2, c);
+	val1 = (int64_t)p_calib[0] * (int64_t)p_lut[0] -
+		(int64_t)p_calib[1] * (int64_t)p_lut[1] -
+		(int64_t)(p_calib[1] - p_calib[0]) * c;
+	val2 = (int64_t)p_lut[0] - (int64_t)p_lut[1];
+	a = div64_s64(val1, val2);
+	dev_dbg(&st->client->dev, "val1 = %lld, val2 = %lld, a = %lld\n",
+		val1, val2, a);
+	b = ((int64_t)p_calib[0] - a) * ((int64_t)p_lut[0] + c);
+	dev_dbg(&st->client->dev, "b = %lld\n", b);
+
+	/*
+	 * pressure_Pa = a + (b / (c + raw_pressure))
+	 * pressure_mPa = 1000 * pressure_Pa
+	 */
+	pressure_mPa = 1000LL * a + div64_s64(1000LL * b, c + raw_pressure);
+
+	return pressure_mPa;
+}
+
+static int icp10100_read_raw_measures(struct iio_dev *indio_dev,
+				      struct iio_chan_spec const *chan,
+				      int *val, int *val2)
+{
+	struct icp10100_state *st = iio_priv(indio_dev);
+	uint32_t raw_pressure;
+	uint16_t raw_temp;
+	uint32_t pressure_mPa;
+	int ret;
+
+	ret = iio_device_claim_direct_mode(indio_dev);
+	if (ret)
+		return ret;
+
+	ret = icp10100_get_measures(st, &raw_pressure, &raw_temp);
+	if (ret)
+		goto error_release;
+
+	switch (chan->type) {
+	case IIO_PRESSURE:
+		pressure_mPa = icp10100_get_pressure(st, raw_pressure,
+						     raw_temp);
+		/* mPa to kPa */
+		*val = pressure_mPa / 1000000;
+		*val2 = pressure_mPa % 1000000;
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	case IIO_TEMP:
+		*val = raw_temp;
+		ret = IIO_VAL_INT;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+error_release:
+	iio_device_release_direct_mode(indio_dev);
+	return ret;
+}
+
+static int icp10100_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct icp10100_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+	case IIO_CHAN_INFO_PROCESSED:
+		return icp10100_read_raw_measures(indio_dev, chan, val, val2);
+	case IIO_CHAN_INFO_SCALE:
+		switch (chan->type) {
+		case IIO_TEMP:
+			/* 1000 * 175°C / 65536 in m°C */
+			*val = 2;
+			*val2 = 670288;
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_OFFSET:
+		switch (chan->type) {
+		case IIO_TEMP:
+			/* 1000 * -45°C in m°C */
+			*val = -45000;
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+		break;
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		mutex_lock(&st->lock);
+		*val = 1 << st->mode;
+		mutex_unlock(&st->lock);
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int icp10100_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	static int oversamplings[] = {1, 2, 4, 8};
+
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		*vals = oversamplings;
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(oversamplings);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int icp10100_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	struct icp10100_state *st = iio_priv(indio_dev);
+	unsigned int mode;
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		/* oversampling is always positive and a power of 2 */
+		if (val <= 0 || !is_power_of_2(val))
+			return -EINVAL;
+		mode = ilog2(val);
+		if (mode >= ICP10100_MODE_NB)
+			return -EINVAL;
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+		mutex_lock(&st->lock);
+		st->mode = mode;
+		mutex_unlock(&st->lock);
+		iio_device_release_direct_mode(indio_dev);
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int icp10100_write_raw_get_fmt(struct iio_dev *indio_dev,
+				      struct iio_chan_spec const *chan,
+				      long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
+		return IIO_VAL_INT;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info icp10100_info = {
+	.read_raw = icp10100_read_raw,
+	.read_avail = icp10100_read_avail,
+	.write_raw = icp10100_write_raw,
+	.write_raw_get_fmt = icp10100_write_raw_get_fmt,
+};
+
+static const struct iio_chan_spec icp10100_channels[] = {
+	{
+		.type = IIO_PRESSURE,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
+		.info_mask_shared_by_all =
+			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available =
+			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+	}, {
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_SCALE) |
+			BIT(IIO_CHAN_INFO_OFFSET),
+		.info_mask_shared_by_all =
+			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+		.info_mask_shared_by_all_available =
+			BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO),
+	},
+};
+
+static int icp10100_enable_regulator(struct icp10100_state *st)
+{
+	int ret;
+
+	ret = regulator_enable(st->vdd);
+	if (ret)
+		return ret;
+	msleep(100);
+
+	return 0;
+}
+
+static void icp10100_disable_regulator_action(void *data)
+{
+	struct icp10100_state *st = data;
+	int ret;
+
+	ret = regulator_disable(st->vdd);
+	if (ret)
+		dev_err(&st->client->dev, "error %d disabling vdd\n", ret);
+}
+
+static void icp10100_pm_disable(void *data)
+{
+	struct device *dev = data;
+
+	pm_runtime_disable(dev);
+}
+
+static int icp10100_probe(struct i2c_client *client,
+			  const struct i2c_device_id *id)
+{
+	struct iio_dev *indio_dev;
+	struct icp10100_state *st;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
+		dev_err(&client->dev, "plain i2c transactions not supported\n");
+		return -ENODEV;
+	}
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*st));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	i2c_set_clientdata(client, indio_dev);
+	indio_dev->name = client->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = icp10100_channels;
+	indio_dev->num_channels = ARRAY_SIZE(icp10100_channels);
+	indio_dev->info = &icp10100_info;
+
+	st = iio_priv(indio_dev);
+	mutex_init(&st->lock);
+	st->client = client;
+	st->mode = ICP10100_MODE_N;
+
+	st->vdd = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(st->vdd))
+		return PTR_ERR(st->vdd);
+
+	ret = icp10100_enable_regulator(st);
+	if (ret)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev,
+				       icp10100_disable_regulator_action, st);
+	if (ret)
+		return ret;
+
+	/* has to be done before the first i2c communication */
+	crc8_populate_msb(icp10100_crc8_table, ICP10100_CRC8_POLYNOMIAL);
+
+	ret = icp10100_init_chip(st);
+	if (ret) {
+		dev_err(&client->dev, "init chip error %d\n", ret);
+		return ret;
+	}
+
+	/* enable runtime pm with autosuspend delay of 2s */
+	pm_runtime_get_noresume(&client->dev);
+	pm_runtime_set_active(&client->dev);
+	pm_runtime_enable(&client->dev);
+	pm_runtime_set_autosuspend_delay(&client->dev, 2000);
+	pm_runtime_use_autosuspend(&client->dev);
+	pm_runtime_put(&client->dev);
+	ret = devm_add_action_or_reset(&client->dev, icp10100_pm_disable,
+				       &client->dev);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static int icp10100_suspend(struct device *dev)
+{
+	struct icp10100_state *st = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	mutex_lock(&st->lock);
+	ret = regulator_disable(st->vdd);
+	mutex_unlock(&st->lock);
+
+	return ret;
+}
+
+static int icp10100_resume(struct device *dev)
+{
+	struct icp10100_state *st = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	mutex_lock(&st->lock);
+
+	ret = icp10100_enable_regulator(st);
+	if (ret)
+		goto out_unlock;
+
+	/* reset chip */
+	ret = icp10100_send_cmd(st, &icp10100_cmd_soft_reset, NULL, 0);
+
+out_unlock:
+	mutex_unlock(&st->lock);
+	return ret;
+}
+
+static DEFINE_RUNTIME_DEV_PM_OPS(icp10100_pm, icp10100_suspend, icp10100_resume,
+				 NULL);
+
+static const struct of_device_id icp10100_of_match[] = {
+	{
+		.compatible = "invensense,icp10100",
+	},
+	{ }
+};
+MODULE_DEVICE_TABLE(of, icp10100_of_match);
+
+static const struct i2c_device_id icp10100_id[] = {
+	{ "icp10100", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, icp10100_id);
+
+static struct i2c_driver icp10100_driver = {
+	.driver = {
+		.name = "icp10100",
+		.pm = pm_ptr(&icp10100_pm),
+		.of_match_table = icp10100_of_match,
+	},
+	.probe = icp10100_probe,
+	.id_table = icp10100_id,
+};
+module_i2c_driver(icp10100_driver);
+
+MODULE_AUTHOR("InvenSense, Inc.");
+MODULE_DESCRIPTION("InvenSense icp10100 driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/pressure/mpl115.c b/drivers/iio/pressure/mpl115.c
index ca81a3dc5646..5bf5b9abe6f1 100644
--- a/drivers/iio/pressure/mpl115.c
+++ b/drivers/iio/pressure/mpl115.c
@@ -160,7 +160,6 @@ int mpl115_probe(struct device *dev, const char *name,
 
 	indio_dev->info = &mpl115_info;
 	indio_dev->name = name;
-	indio_dev->dev.parent = dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mpl115_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mpl115_channels);
@@ -188,7 +187,7 @@ int mpl115_probe(struct device *dev, const char *name,
 
 	return devm_iio_device_register(dev, indio_dev);
 }
-EXPORT_SYMBOL_GPL(mpl115_probe);
+EXPORT_SYMBOL_NS_GPL(mpl115_probe, IIO_MPL115);
 
 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
 MODULE_DESCRIPTION("Freescale MPL115 pressure/temperature driver");
diff --git a/drivers/iio/pressure/mpl115_i2c.c b/drivers/iio/pressure/mpl115_i2c.c
index ac1f12bcb65e..099ab1c6832c 100644
--- a/drivers/iio/pressure/mpl115_i2c.c
+++ b/drivers/iio/pressure/mpl115_i2c.c
@@ -62,3 +62,4 @@ module_i2c_driver(mpl115_i2c_driver);
 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
 MODULE_DESCRIPTION("Freescale MPL115A2 pressure/temperature driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_MPL115);
diff --git a/drivers/iio/pressure/mpl115_spi.c b/drivers/iio/pressure/mpl115_spi.c
index 4d064f98f56a..7feec87e2704 100644
--- a/drivers/iio/pressure/mpl115_spi.c
+++ b/drivers/iio/pressure/mpl115_spi.c
@@ -101,3 +101,4 @@ module_spi_driver(mpl115_spi_driver);
 MODULE_AUTHOR("Akinobu Mita <akinobu.mita@gmail.com>");
 MODULE_DESCRIPTION("Freescale MPL115A1 pressure/temperature driver");
 MODULE_LICENSE("GPL");
+MODULE_IMPORT_NS(IIO_MPL115);
diff --git a/drivers/iio/pressure/mpl3115.c b/drivers/iio/pressure/mpl3115.c
index d066f3c5a8a6..2f22aba61e4d 100644
--- a/drivers/iio/pressure/mpl3115.c
+++ b/drivers/iio/pressure/mpl3115.c
@@ -74,7 +74,6 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev,
 			    int *val, int *val2, long mask)
 {
 	struct mpl3115_data *data = iio_priv(indio_dev);
-	__be32 tmp = 0;
 	int ret;
 
 	switch (mask) {
@@ -84,7 +83,9 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev,
 			return ret;
 
 		switch (chan->type) {
-		case IIO_PRESSURE: /* in 0.25 pascal / LSB */
+		case IIO_PRESSURE: { /* in 0.25 pascal / LSB */
+			__be32 tmp = 0;
+
 			mutex_lock(&data->lock);
 			ret = mpl3115_request(data);
 			if (ret < 0) {
@@ -96,10 +97,13 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev,
 			mutex_unlock(&data->lock);
 			if (ret < 0)
 				break;
-			*val = be32_to_cpu(tmp) >> 12;
+			*val = be32_to_cpu(tmp) >> chan->scan_type.shift;
 			ret = IIO_VAL_INT;
 			break;
-		case IIO_TEMP: /* in 0.0625 celsius / LSB */
+		}
+		case IIO_TEMP: { /* in 0.0625 celsius / LSB */
+			__be16 tmp;
+
 			mutex_lock(&data->lock);
 			ret = mpl3115_request(data);
 			if (ret < 0) {
@@ -111,9 +115,11 @@ static int mpl3115_read_raw(struct iio_dev *indio_dev,
 			mutex_unlock(&data->lock);
 			if (ret < 0)
 				break;
-			*val = sign_extend32(be32_to_cpu(tmp) >> 20, 11);
+			*val = sign_extend32(be16_to_cpu(tmp) >> chan->scan_type.shift,
+					     chan->scan_type.realbits - 1);
 			ret = IIO_VAL_INT;
 			break;
+		}
 		default:
 			ret = -EINVAL;
 			break;
@@ -144,7 +150,14 @@ static irqreturn_t mpl3115_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct mpl3115_data *data = iio_priv(indio_dev);
-	u8 buffer[16]; /* 32-bit channel + 16-bit channel + padding + ts */
+	/*
+	 * 32-bit channel + 16-bit channel + padding + ts
+	 * Note that it is possible for only one of the first 2
+	 * channels to be enabled. If that happens, the first element
+	 * of the buffer may be either 16 or 32-bits.  As such we cannot
+	 * use a simple structure definition to express this data layout.
+	 */
+	u8 buffer[16] __aligned(8);
 	int ret, pos = 0;
 
 	mutex_lock(&data->lock);
@@ -241,7 +254,6 @@ static int mpl3115_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	indio_dev->info = &mpl3115_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mpl3115_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mpl3115_channels);
@@ -278,18 +290,15 @@ static int mpl3115_standby(struct mpl3115_data *data)
 		data->ctrl_reg1 & ~MPL3115_CTRL_ACTIVE);
 }
 
-static int mpl3115_remove(struct i2c_client *client)
+static void mpl3115_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	mpl3115_standby(iio_priv(indio_dev));
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int mpl3115_suspend(struct device *dev)
 {
 	return mpl3115_standby(iio_priv(i2c_get_clientdata(
@@ -305,11 +314,8 @@ static int mpl3115_resume(struct device *dev)
 		data->ctrl_reg1);
 }
 
-static SIMPLE_DEV_PM_OPS(mpl3115_pm_ops, mpl3115_suspend, mpl3115_resume);
-#define MPL3115_PM_OPS (&mpl3115_pm_ops)
-#else
-#define MPL3115_PM_OPS NULL
-#endif
+static DEFINE_SIMPLE_DEV_PM_OPS(mpl3115_pm_ops, mpl3115_suspend,
+				mpl3115_resume);
 
 static const struct i2c_device_id mpl3115_id[] = {
 	{ "mpl3115", 0 },
@@ -327,7 +333,7 @@ static struct i2c_driver mpl3115_driver = {
 	.driver = {
 		.name	= "mpl3115",
 		.of_match_table = mpl3115_of_match,
-		.pm	= MPL3115_PM_OPS,
+		.pm	= pm_sleep_ptr(&mpl3115_pm_ops),
 	},
 	.probe = mpl3115_probe,
 	.remove = mpl3115_remove,
diff --git a/drivers/iio/pressure/ms5611.h b/drivers/iio/pressure/ms5611.h
index bc06271fa38b..cbc9349c342a 100644
--- a/drivers/iio/pressure/ms5611.h
+++ b/drivers/iio/pressure/ms5611.h
@@ -50,9 +50,9 @@ struct ms5611_state {
 	const struct ms5611_osr *pressure_osr;
 	const struct ms5611_osr *temp_osr;
 
-	int (*reset)(struct device *dev);
-	int (*read_prom_word)(struct device *dev, int index, u16 *word);
-	int (*read_adc_temp_and_pressure)(struct device *dev,
+	int (*reset)(struct ms5611_state *st);
+	int (*read_prom_word)(struct ms5611_state *st, int index, u16 *word);
+	int (*read_adc_temp_and_pressure)(struct ms5611_state *st,
 					  s32 *temp, s32 *pressure);
 
 	struct ms5611_chip_info *chip_info;
@@ -61,6 +61,6 @@ struct ms5611_state {
 
 int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
 		 const char *name, int type);
-int ms5611_remove(struct iio_dev *indio_dev);
+void ms5611_remove(struct iio_dev *indio_dev);
 
 #endif /* _MS5611_H */
diff --git a/drivers/iio/pressure/ms5611_core.c b/drivers/iio/pressure/ms5611_core.c
index 2f598ad91621..717521de66c4 100644
--- a/drivers/iio/pressure/ms5611_core.c
+++ b/drivers/iio/pressure/ms5611_core.c
@@ -85,8 +85,7 @@ static int ms5611_read_prom(struct iio_dev *indio_dev)
 	struct ms5611_state *st = iio_priv(indio_dev);
 
 	for (i = 0; i < MS5611_PROM_WORDS_NB; i++) {
-		ret = st->read_prom_word(&indio_dev->dev,
-					 i, &st->chip_info->prom[i]);
+		ret = st->read_prom_word(st, i, &st->chip_info->prom[i]);
 		if (ret < 0) {
 			dev_err(&indio_dev->dev,
 				"failed to read prom at %d\n", i);
@@ -108,7 +107,7 @@ static int ms5611_read_temp_and_pressure(struct iio_dev *indio_dev,
 	int ret;
 	struct ms5611_state *st = iio_priv(indio_dev);
 
-	ret = st->read_adc_temp_and_pressure(&indio_dev->dev, temp, pressure);
+	ret = st->read_adc_temp_and_pressure(st, temp, pressure);
 	if (ret < 0) {
 		dev_err(&indio_dev->dev,
 			"failed to read temperature and pressure\n");
@@ -196,7 +195,7 @@ static int ms5611_reset(struct iio_dev *indio_dev)
 	int ret;
 	struct ms5611_state *st = iio_priv(indio_dev);
 
-	ret = st->reset(&indio_dev->dev);
+	ret = st->reset(st);
 	if (ret < 0) {
 		dev_err(&indio_dev->dev, "failed to reset device\n");
 		return ret;
@@ -212,16 +211,21 @@ static irqreturn_t ms5611_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ms5611_state *st = iio_priv(indio_dev);
-	s32 buf[4]; /* s32 (pressure) + s32 (temp) + 2 * s32 (timestamp) */
+	/* Ensure buffer elements are naturally aligned */
+	struct {
+		s32 channels[2];
+		s64 ts __aligned(8);
+	} scan;
 	int ret;
 
 	mutex_lock(&st->lock);
-	ret = ms5611_read_temp_and_pressure(indio_dev, &buf[1], &buf[0]);
+	ret = ms5611_read_temp_and_pressure(indio_dev, &scan.channels[1],
+					    &scan.channels[0]);
 	mutex_unlock(&st->lock);
 	if (ret < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buf,
+	iio_push_to_buffers_with_timestamp(indio_dev, &scan,
 					   iio_get_time_ns(indio_dev));
 
 err:
@@ -435,7 +439,6 @@ int ms5611_probe(struct iio_dev *indio_dev, struct device *dev,
 	st->pressure_osr =
 		&ms5611_avail_pressure_osr[ARRAY_SIZE(ms5611_avail_pressure_osr)
 					   - 1];
-	indio_dev->dev.parent = dev;
 	indio_dev->name = name;
 	indio_dev->info = &ms5611_info;
 	indio_dev->channels = ms5611_channels;
@@ -468,17 +471,15 @@ err_fini:
 	ms5611_fini(indio_dev);
 	return ret;
 }
-EXPORT_SYMBOL(ms5611_probe);
+EXPORT_SYMBOL_NS(ms5611_probe, IIO_MS5611);
 
-int ms5611_remove(struct iio_dev *indio_dev)
+void ms5611_remove(struct iio_dev *indio_dev)
 {
 	iio_device_unregister(indio_dev);
 	iio_triggered_buffer_cleanup(indio_dev);
 	ms5611_fini(indio_dev);
-
-	return 0;
 }
-EXPORT_SYMBOL(ms5611_remove);
+EXPORT_SYMBOL_NS(ms5611_remove, IIO_MS5611);
 
 MODULE_AUTHOR("Tomasz Duszynski <tduszyns@gmail.com>");
 MODULE_DESCRIPTION("MS5611 core driver");
diff --git a/drivers/iio/pressure/ms5611_i2c.c b/drivers/iio/pressure/ms5611_i2c.c
index 8089c59adce5..b681a4183909 100644
--- a/drivers/iio/pressure/ms5611_i2c.c
+++ b/drivers/iio/pressure/ms5611_i2c.c
@@ -14,21 +14,21 @@
 #include <linux/delay.h>
 #include <linux/i2c.h>
 #include <linux/module.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+
+#include <asm/unaligned.h>
 
 #include "ms5611.h"
 
-static int ms5611_i2c_reset(struct device *dev)
+static int ms5611_i2c_reset(struct ms5611_state *st)
 {
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
-
 	return i2c_smbus_write_byte(st->client, MS5611_RESET);
 }
 
-static int ms5611_i2c_read_prom_word(struct device *dev, int index, u16 *word)
+static int ms5611_i2c_read_prom_word(struct ms5611_state *st, int index,
+				     u16 *word)
 {
 	int ret;
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
 
 	ret = i2c_smbus_read_word_swapped(st->client,
 			MS5611_READ_PROM_WORD + (index << 1));
@@ -50,16 +50,15 @@ static int ms5611_i2c_read_adc(struct ms5611_state *st, s32 *val)
 	if (ret < 0)
 		return ret;
 
-	*val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
+	*val = get_unaligned_be24(&buf[0]);
 
 	return 0;
 }
 
-static int ms5611_i2c_read_adc_temp_and_pressure(struct device *dev,
+static int ms5611_i2c_read_adc_temp_and_pressure(struct ms5611_state *st,
 						 s32 *temp, s32 *pressure)
 {
 	int ret;
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
 	const struct ms5611_osr *osr = st->temp_osr;
 
 	ret = i2c_smbus_write_byte(st->client, osr->cmd);
@@ -106,19 +105,17 @@ static int ms5611_i2c_probe(struct i2c_client *client,
 	return ms5611_probe(indio_dev, &client->dev, id->name, id->driver_data);
 }
 
-static int ms5611_i2c_remove(struct i2c_client *client)
+static void ms5611_i2c_remove(struct i2c_client *client)
 {
-	return ms5611_remove(i2c_get_clientdata(client));
+	ms5611_remove(i2c_get_clientdata(client));
 }
 
-#if defined(CONFIG_OF)
 static const struct of_device_id ms5611_i2c_matches[] = {
 	{ .compatible = "meas,ms5611" },
 	{ .compatible = "meas,ms5607" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ms5611_i2c_matches);
-#endif
 
 static const struct i2c_device_id ms5611_id[] = {
 	{ "ms5611", MS5611 },
@@ -130,7 +127,7 @@ MODULE_DEVICE_TABLE(i2c, ms5611_id);
 static struct i2c_driver ms5611_driver = {
 	.driver = {
 		.name = "ms5611",
-		.of_match_table = of_match_ptr(ms5611_i2c_matches)
+		.of_match_table = ms5611_i2c_matches,
 	},
 	.id_table = ms5611_id,
 	.probe = ms5611_i2c_probe,
@@ -141,3 +138,4 @@ module_i2c_driver(ms5611_driver);
 MODULE_AUTHOR("Tomasz Duszynski <tduszyns@gmail.com>");
 MODULE_DESCRIPTION("MS5611 i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MS5611);
diff --git a/drivers/iio/pressure/ms5611_spi.c b/drivers/iio/pressure/ms5611_spi.c
index b463eaa799ab..432e912096f4 100644
--- a/drivers/iio/pressure/ms5611_spi.c
+++ b/drivers/iio/pressure/ms5611_spi.c
@@ -9,22 +9,23 @@
 #include <linux/delay.h>
 #include <linux/module.h>
 #include <linux/spi/spi.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
+
+#include <asm/unaligned.h>
 
 #include "ms5611.h"
 
-static int ms5611_spi_reset(struct device *dev)
+static int ms5611_spi_reset(struct ms5611_state *st)
 {
 	u8 cmd = MS5611_RESET;
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
 
 	return spi_write_then_read(st->client, &cmd, 1, NULL, 0);
 }
 
-static int ms5611_spi_read_prom_word(struct device *dev, int index, u16 *word)
+static int ms5611_spi_read_prom_word(struct ms5611_state *st, int index,
+				     u16 *word)
 {
 	int ret;
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
 
 	ret = spi_w8r16be(st->client, MS5611_READ_PROM_WORD + (index << 1));
 	if (ret < 0)
@@ -35,26 +36,24 @@ static int ms5611_spi_read_prom_word(struct device *dev, int index, u16 *word)
 	return 0;
 }
 
-static int ms5611_spi_read_adc(struct device *dev, s32 *val)
+static int ms5611_spi_read_adc(struct ms5611_state *st, s32 *val)
 {
 	int ret;
 	u8 buf[3] = { MS5611_READ_ADC };
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
 
 	ret = spi_write_then_read(st->client, buf, 1, buf, 3);
 	if (ret < 0)
 		return ret;
 
-	*val = (buf[0] << 16) | (buf[1] << 8) | buf[2];
+	*val = get_unaligned_be24(&buf[0]);
 
 	return 0;
 }
 
-static int ms5611_spi_read_adc_temp_and_pressure(struct device *dev,
+static int ms5611_spi_read_adc_temp_and_pressure(struct ms5611_state *st,
 						 s32 *temp, s32 *pressure)
 {
 	int ret;
-	struct ms5611_state *st = iio_priv(dev_to_iio_dev(dev));
 	const struct ms5611_osr *osr = st->temp_osr;
 
 	/*
@@ -66,7 +65,7 @@ static int ms5611_spi_read_adc_temp_and_pressure(struct device *dev,
 		return ret;
 
 	usleep_range(osr->conv_usec, osr->conv_usec + (osr->conv_usec / 10UL));
-	ret = ms5611_spi_read_adc(dev, temp);
+	ret = ms5611_spi_read_adc(st, temp);
 	if (ret < 0)
 		return ret;
 
@@ -76,7 +75,7 @@ static int ms5611_spi_read_adc_temp_and_pressure(struct device *dev,
 		return ret;
 
 	usleep_range(osr->conv_usec, osr->conv_usec + (osr->conv_usec / 10UL));
-	return ms5611_spi_read_adc(dev, pressure);
+	return ms5611_spi_read_adc(st, pressure);
 }
 
 static int ms5611_spi_probe(struct spi_device *spi)
@@ -108,19 +107,17 @@ static int ms5611_spi_probe(struct spi_device *spi)
 			    spi_get_device_id(spi)->driver_data);
 }
 
-static int ms5611_spi_remove(struct spi_device *spi)
+static void ms5611_spi_remove(struct spi_device *spi)
 {
-	return ms5611_remove(spi_get_drvdata(spi));
+	ms5611_remove(spi_get_drvdata(spi));
 }
 
-#if defined(CONFIG_OF)
 static const struct of_device_id ms5611_spi_matches[] = {
 	{ .compatible = "meas,ms5611" },
 	{ .compatible = "meas,ms5607" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, ms5611_spi_matches);
-#endif
 
 static const struct spi_device_id ms5611_id[] = {
 	{ "ms5611", MS5611 },
@@ -132,7 +129,7 @@ MODULE_DEVICE_TABLE(spi, ms5611_id);
 static struct spi_driver ms5611_driver = {
 	.driver = {
 		.name = "ms5611",
-		.of_match_table = of_match_ptr(ms5611_spi_matches)
+		.of_match_table = ms5611_spi_matches
 	},
 	.id_table = ms5611_id,
 	.probe = ms5611_spi_probe,
@@ -143,3 +140,4 @@ module_spi_driver(ms5611_driver);
 MODULE_AUTHOR("Tomasz Duszynski <tduszyns@gmail.com>");
 MODULE_DESCRIPTION("MS5611 spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MS5611);
diff --git a/drivers/iio/pressure/ms5637.c b/drivers/iio/pressure/ms5637.c
index f49c7003c72a..70c70019142a 100644
--- a/drivers/iio/pressure/ms5637.c
+++ b/drivers/iio/pressure/ms5637.c
@@ -22,6 +22,7 @@
 #include <linux/kernel.h>
 #include <linux/stat.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -29,9 +30,25 @@
 
 #include "../common/ms_sensors/ms_sensors_i2c.h"
 
+struct ms_tp_data {
+	const char *name;
+	const struct ms_tp_hw_data *hw;
+};
+
 static const int ms5637_samp_freq[6] = { 960, 480, 240, 120, 60, 30 };
-/* String copy of the above const for readability purpose */
-static const char ms5637_show_samp_freq[] = "960 480 240 120 60 30";
+
+static ssize_t ms5637_show_samp_freq(struct device *dev, struct device_attribute *attr, char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct ms_tp_dev *dev_data = iio_priv(indio_dev);
+	int i, len = 0;
+
+	for (i = 0; i <= dev_data->hw->max_res_index; i++)
+		len += sysfs_emit_at(buf, len, "%u ", ms5637_samp_freq[i]);
+	sysfs_emit_at(buf, len - 1, "\n");
+
+	return len;
+}
 
 static int ms5637_read_raw(struct iio_dev *indio_dev,
 			   struct iio_chan_spec const *channel, int *val,
@@ -108,10 +125,10 @@ static const struct iio_chan_spec ms5637_channels[] = {
 	}
 };
 
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);
+static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(ms5637_show_samp_freq);
 
 static struct attribute *ms5637_attributes[] = {
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
 	NULL,
 };
 
@@ -128,6 +145,7 @@ static const struct iio_info ms5637_info = {
 static int ms5637_probe(struct i2c_client *client,
 			const struct i2c_device_id *id)
 {
+	const struct ms_tp_data *data;
 	struct ms_tp_dev *dev_data;
 	struct iio_dev *indio_dev;
 	int ret;
@@ -141,18 +159,25 @@ static int ms5637_probe(struct i2c_client *client,
 		return -EOPNOTSUPP;
 	}
 
+	if (id)
+		data = (const struct ms_tp_data *)id->driver_data;
+	else
+		data = device_get_match_data(&client->dev);
+	if (!data)
+		return -EINVAL;
+
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*dev_data));
 	if (!indio_dev)
 		return -ENOMEM;
 
 	dev_data = iio_priv(indio_dev);
 	dev_data->client = client;
-	dev_data->res_index = 5;
+	dev_data->res_index = data->hw->max_res_index;
+	dev_data->hw = data->hw;
 	mutex_init(&dev_data->lock);
 
 	indio_dev->info = &ms5637_info;
-	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
+	indio_dev->name = data->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ms5637_channels;
 	indio_dev->num_channels = ARRAY_SIZE(ms5637_channels);
@@ -170,20 +195,44 @@ static int ms5637_probe(struct i2c_client *client,
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
+static const struct ms_tp_hw_data ms5637_hw_data  = {
+	.prom_len = 7,
+	.max_res_index = 5
+};
+
+static const struct ms_tp_hw_data ms5803_hw_data  = {
+	.prom_len = 8,
+	.max_res_index = 4
+};
+
+static const struct ms_tp_data ms5637_data = { .name = "ms5637", .hw = &ms5637_hw_data };
+
+static const struct ms_tp_data ms5803_data = { .name = "ms5803", .hw = &ms5803_hw_data };
+
+static const struct ms_tp_data ms5805_data = { .name = "ms5805", .hw = &ms5637_hw_data };
+
+static const struct ms_tp_data ms5837_data = { .name = "ms5837", .hw = &ms5637_hw_data };
+
+static const struct ms_tp_data ms8607_data = {
+	.name = "ms8607-temppressure",
+	.hw = &ms5637_hw_data,
+};
+
 static const struct i2c_device_id ms5637_id[] = {
-	{"ms5637", 0},
-	{"ms5805", 0},
-	{"ms5837", 0},
-	{"ms8607-temppressure", 0},
+	{"ms5637", (kernel_ulong_t)&ms5637_data },
+	{"ms5805", (kernel_ulong_t)&ms5805_data },
+	{"ms5837", (kernel_ulong_t)&ms5837_data },
+	{"ms8607-temppressure", (kernel_ulong_t)&ms8607_data },
 	{}
 };
 MODULE_DEVICE_TABLE(i2c, ms5637_id);
 
 static const struct of_device_id ms5637_of_match[] = {
-	{ .compatible = "meas,ms5637", },
-	{ .compatible = "meas,ms5805", },
-	{ .compatible = "meas,ms5837", },
-	{ .compatible = "meas,ms8607-temppressure", },
+	{ .compatible = "meas,ms5637", .data = &ms5637_data },
+	{ .compatible = "meas,ms5803", .data = &ms5803_data },
+	{ .compatible = "meas,ms5805", .data = &ms5805_data },
+	{ .compatible = "meas,ms5837", .data = &ms5837_data },
+	{ .compatible = "meas,ms8607-temppressure", .data = &ms8607_data },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, ms5637_of_match);
@@ -193,7 +242,7 @@ static struct i2c_driver ms5637_driver = {
 	.id_table = ms5637_id,
 	.driver = {
 		   .name = "ms5637",
-		   .of_match_table = of_match_ptr(ms5637_of_match),
+		   .of_match_table = ms5637_of_match,
 		   },
 };
 
@@ -203,3 +252,4 @@ MODULE_DESCRIPTION("Measurement-Specialties ms5637 temperature & pressure driver
 MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
 MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);
diff --git a/drivers/iio/pressure/st_pressure.h b/drivers/iio/pressure/st_pressure.h
index 5c746ff6087e..6e11bea784fa 100644
--- a/drivers/iio/pressure/st_pressure.h
+++ b/drivers/iio/pressure/st_pressure.h
@@ -22,6 +22,7 @@ enum st_press_type {
 	LPS33HW,
 	LPS35HW,
 	LPS22HH,
+	LPS22DF,
 	ST_PRESS_MAX,
 };
 
@@ -32,6 +33,7 @@ enum st_press_type {
 #define LPS33HW_PRESS_DEV_NAME		"lps33hw"
 #define LPS35HW_PRESS_DEV_NAME		"lps35hw"
 #define LPS22HH_PRESS_DEV_NAME		"lps22hh"
+#define LPS22DF_PRESS_DEV_NAME		"lps22df"
 
 /**
  * struct st_sensors_platform_data - default press platform data
@@ -41,13 +43,8 @@ static __maybe_unused const struct st_sensors_platform_data default_press_pdata
 	.drdy_int_pin = 1,
 };
 
-const struct st_sensor_settings *st_press_get_settings(const char *name);
-int st_press_common_probe(struct iio_dev *indio_dev);
-void st_press_common_remove(struct iio_dev *indio_dev);
-
 #ifdef CONFIG_IIO_BUFFER
 int st_press_allocate_ring(struct iio_dev *indio_dev);
-void st_press_deallocate_ring(struct iio_dev *indio_dev);
 int st_press_trig_set_state(struct iio_trigger *trig, bool state);
 #define ST_PRESS_TRIGGER_SET_STATE (&st_press_trig_set_state)
 #else /* CONFIG_IIO_BUFFER */
@@ -55,10 +52,6 @@ static inline int st_press_allocate_ring(struct iio_dev *indio_dev)
 {
 	return 0;
 }
-
-static inline void st_press_deallocate_ring(struct iio_dev *indio_dev)
-{
-}
 #define ST_PRESS_TRIGGER_SET_STATE NULL
 #endif /* CONFIG_IIO_BUFFER */
 
diff --git a/drivers/iio/pressure/st_pressure_buffer.c b/drivers/iio/pressure/st_pressure_buffer.c
index 418dbf9e6e1e..0dbf357c2c22 100644
--- a/drivers/iio/pressure/st_pressure_buffer.c
+++ b/drivers/iio/pressure/st_pressure_buffer.c
@@ -7,16 +7,10 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
-#include <linux/module.h>
 #include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/delay.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/buffer.h>
-#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/trigger.h>
 #include <linux/iio/triggered_buffer.h>
 
 #include <linux/iio/common/st_sensors.h>
@@ -31,34 +25,12 @@ int st_press_trig_set_state(struct iio_trigger *trig, bool state)
 
 static int st_press_buffer_postenable(struct iio_dev *indio_dev)
 {
-	int err;
-
-	err = iio_triggered_buffer_postenable(indio_dev);
-	if (err < 0)
-		return err;
-
-	err = st_sensors_set_enable(indio_dev, true);
-	if (err < 0)
-		goto st_press_buffer_predisable;
-
-	return 0;
-
-st_press_buffer_predisable:
-	iio_triggered_buffer_predisable(indio_dev);
-	return err;
+	return st_sensors_set_enable(indio_dev, true);
 }
 
 static int st_press_buffer_predisable(struct iio_dev *indio_dev)
 {
-	int err, err2;
-
-	err = st_sensors_set_enable(indio_dev, false);
-
-	err2 = iio_triggered_buffer_predisable(indio_dev);
-	if (!err)
-		err = err2;
-
-	return err;
+	return st_sensors_set_enable(indio_dev, false);
 }
 
 static const struct iio_buffer_setup_ops st_press_buffer_setup_ops = {
@@ -68,15 +40,6 @@ static const struct iio_buffer_setup_ops st_press_buffer_setup_ops = {
 
 int st_press_allocate_ring(struct iio_dev *indio_dev)
 {
-	return iio_triggered_buffer_setup(indio_dev, NULL,
-		&st_sensors_trigger_handler, &st_press_buffer_setup_ops);
+	return devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
+		NULL, &st_sensors_trigger_handler, &st_press_buffer_setup_ops);
 }
-
-void st_press_deallocate_ring(struct iio_dev *indio_dev)
-{
-	iio_triggered_buffer_cleanup(indio_dev);
-}
-
-MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
-MODULE_DESCRIPTION("STMicroelectronics pressures buffer");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/pressure/st_pressure_core.c b/drivers/iio/pressure/st_pressure_core.c
index bd972cec4830..80176e3083af 100644
--- a/drivers/iio/pressure/st_pressure_core.c
+++ b/drivers/iio/pressure/st_pressure_core.c
@@ -9,17 +9,11 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/types.h>
-#include <linux/interrupt.h>
-#include <linux/i2c.h>
-#include <linux/irq.h>
-#include <linux/delay.h>
+#include <linux/mutex.h>
+#include <linux/sysfs.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/trigger.h>
-#include <linux/iio/buffer.h>
 #include <asm/unaligned.h>
 
 #include <linux/iio/common/st_sensors.h>
@@ -558,6 +552,76 @@ static const struct st_sensor_settings st_press_sensors_settings[] = {
 		.multi_read_bit = false,
 		.bootime = 2,
 	},
+	{
+		/*
+		 * CUSTOM VALUES FOR LPS22DF SENSOR
+		 * See LPS22DF datasheet:
+		 * http://www.st.com/resource/en/datasheet/lps22df.pdf
+		 */
+		.wai = 0xb4,
+		.wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
+		.sensors_supported = {
+			[0] = LPS22DF_PRESS_DEV_NAME,
+		},
+		.ch = (struct iio_chan_spec *)st_press_lps22hb_channels,
+		.num_ch = ARRAY_SIZE(st_press_lps22hb_channels),
+		.odr = {
+			.addr = 0x10,
+			.mask = 0x78,
+			.odr_avl = {
+				{ .hz = 1, .value = 0x01 },
+				{ .hz = 4, .value = 0x02 },
+				{ .hz = 10, .value = 0x03 },
+				{ .hz = 25, .value = 0x04 },
+				{ .hz = 50, .value = 0x05 },
+				{ .hz = 75, .value = 0x06 },
+				{ .hz = 100, .value = 0x07 },
+				{ .hz = 200, .value = 0x08 },
+			},
+		},
+		.pw = {
+			.addr = 0x10,
+			.mask = 0x78,
+			.value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
+		},
+		.fs = {
+			.fs_avl = {
+				/*
+				 * Pressure and temperature sensitivity values
+				 * as defined in table 2 of LPS22DF datasheet.
+				 */
+				[0] = {
+					.num = ST_PRESS_FS_AVL_1260MB,
+					.gain = ST_PRESS_KPASCAL_NANO_SCALE,
+					.gain2 = ST_PRESS_LPS22HB_LSB_PER_CELSIUS,
+				},
+			},
+		},
+		.bdu = {
+			.addr = 0x11,
+			.mask = BIT(3),
+		},
+		.drdy_irq = {
+			.int1 = {
+				.addr = 0x13,
+				.mask = BIT(5),
+				.addr_od = 0x12,
+				.mask_od = BIT(1),
+			},
+			.addr_ihl = 0x12,
+			.mask_ihl = BIT(3),
+			.stat_drdy = {
+				.addr = ST_SENSORS_DEFAULT_STAT_ADDR,
+				.mask = 0x03,
+			},
+		},
+		.sim = {
+			.addr = 0x0E,
+			.value = BIT(5),
+		},
+		.multi_read_bit = false,
+		.bootime = 2,
+	},
 };
 
 static int st_press_write_raw(struct iio_dev *indio_dev,
@@ -566,16 +630,12 @@ static int st_press_write_raw(struct iio_dev *indio_dev,
 			      int val2,
 			      long mask)
 {
-	int err;
-
 	switch (mask) {
 	case IIO_CHAN_INFO_SAMP_FREQ:
 		if (val2)
 			return -EINVAL;
-		mutex_lock(&indio_dev->mlock);
-		err = st_sensors_set_odr(indio_dev, val);
-		mutex_unlock(&indio_dev->mlock);
-		return err;
+
+		return st_sensors_set_odr(indio_dev, val);
 	default:
 		return -EINVAL;
 	}
@@ -678,25 +738,21 @@ const struct st_sensor_settings *st_press_get_settings(const char *name)
 
 	return &st_press_sensors_settings[index];
 }
-EXPORT_SYMBOL(st_press_get_settings);
+EXPORT_SYMBOL_NS(st_press_get_settings, IIO_ST_SENSORS);
 
 int st_press_common_probe(struct iio_dev *indio_dev)
 {
 	struct st_sensor_data *press_data = iio_priv(indio_dev);
-	struct st_sensors_platform_data *pdata =
-		(struct st_sensors_platform_data *)press_data->dev->platform_data;
+	struct device *parent = indio_dev->dev.parent;
+	struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
 	int err;
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &press_info;
 
-	err = st_sensors_power_enable(indio_dev);
-	if (err)
-		return err;
-
 	err = st_sensors_verify_id(indio_dev);
 	if (err < 0)
-		goto st_press_power_off;
+		return err;
 
 	/*
 	 * Skip timestamping channel while declaring available channels to
@@ -708,9 +764,7 @@ int st_press_common_probe(struct iio_dev *indio_dev)
 	indio_dev->channels = press_data->sensor_settings->ch;
 	indio_dev->num_channels = press_data->sensor_settings->num_ch;
 
-	press_data->current_fullscale =
-		(struct st_sensor_fullscale_avl *)
-			&press_data->sensor_settings->fs.fs_avl[0];
+	press_data->current_fullscale = &press_data->sensor_settings->fs.fs_avl[0];
 
 	press_data->odr = press_data->sensor_settings->odr.odr_avl[0].hz;
 
@@ -721,54 +775,24 @@ int st_press_common_probe(struct iio_dev *indio_dev)
 
 	err = st_sensors_init_sensor(indio_dev, pdata);
 	if (err < 0)
-		goto st_press_power_off;
+		return err;
 
 	err = st_press_allocate_ring(indio_dev);
 	if (err < 0)
-		goto st_press_power_off;
+		return err;
 
 	if (press_data->irq > 0) {
 		err = st_sensors_allocate_trigger(indio_dev,
 						  ST_PRESS_TRIGGER_OPS);
 		if (err < 0)
-			goto st_press_probe_trigger_error;
+			return err;
 	}
 
-	err = iio_device_register(indio_dev);
-	if (err)
-		goto st_press_device_register_error;
-
-	dev_info(&indio_dev->dev, "registered pressure sensor %s\n",
-		 indio_dev->name);
-
-	return err;
-
-st_press_device_register_error:
-	if (press_data->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-st_press_probe_trigger_error:
-	st_press_deallocate_ring(indio_dev);
-st_press_power_off:
-	st_sensors_power_disable(indio_dev);
-
-	return err;
-}
-EXPORT_SYMBOL(st_press_common_probe);
-
-void st_press_common_remove(struct iio_dev *indio_dev)
-{
-	struct st_sensor_data *press_data = iio_priv(indio_dev);
-
-	st_sensors_power_disable(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	if (press_data->irq > 0)
-		st_sensors_deallocate_trigger(indio_dev);
-
-	st_press_deallocate_ring(indio_dev);
+	return devm_iio_device_register(parent, indio_dev);
 }
-EXPORT_SYMBOL(st_press_common_remove);
+EXPORT_SYMBOL_NS(st_press_common_probe, IIO_ST_SENSORS);
 
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics pressures driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/pressure/st_pressure_i2c.c b/drivers/iio/pressure/st_pressure_i2c.c
index 09c6903f99b8..58fede861891 100644
--- a/drivers/iio/pressure/st_pressure_i2c.c
+++ b/drivers/iio/pressure/st_pressure_i2c.c
@@ -7,9 +7,10 @@
  * Denis Ciocca <denis.ciocca@st.com>
  */
 
+#include <linux/acpi.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/i2c.h>
 #include <linux/iio/iio.h>
 
@@ -46,6 +47,10 @@ static const struct of_device_id st_press_of_match[] = {
 		.compatible = "st,lps22hh",
 		.data = LPS22HH_PRESS_DEV_NAME,
 	},
+	{
+		.compatible = "st,lps22df",
+		.data = LPS22DF_PRESS_DEV_NAME,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_press_of_match);
@@ -66,6 +71,7 @@ static const struct i2c_device_id st_press_id_table[] = {
 	{ LPS33HW_PRESS_DEV_NAME, LPS33HW },
 	{ LPS35HW_PRESS_DEV_NAME, LPS35HW },
 	{ LPS22HH_PRESS_DEV_NAME, LPS22HH },
+	{ LPS22DF_PRESS_DEV_NAME, LPS22DF },
 	{},
 };
 MODULE_DEVICE_TABLE(i2c, st_press_id_table);
@@ -98,18 +104,11 @@ static int st_press_i2c_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
-	ret = st_press_common_probe(indio_dev);
-	if (ret < 0)
+	ret = st_sensors_power_enable(indio_dev);
+	if (ret)
 		return ret;
 
-	return 0;
-}
-
-static int st_press_i2c_remove(struct i2c_client *client)
-{
-	st_press_common_remove(i2c_get_clientdata(client));
-
-	return 0;
+	return st_press_common_probe(indio_dev);
 }
 
 static struct i2c_driver st_press_driver = {
@@ -119,7 +118,6 @@ static struct i2c_driver st_press_driver = {
 		.acpi_match_table = ACPI_PTR(st_press_acpi_match),
 	},
 	.probe = st_press_i2c_probe,
-	.remove = st_press_i2c_remove,
 	.id_table = st_press_id_table,
 };
 module_i2c_driver(st_press_driver);
@@ -127,3 +125,4 @@ module_i2c_driver(st_press_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics pressures i2c driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/pressure/st_pressure_spi.c b/drivers/iio/pressure/st_pressure_spi.c
index b5ee3ec2764f..25cca5ad7c55 100644
--- a/drivers/iio/pressure/st_pressure_spi.c
+++ b/drivers/iio/pressure/st_pressure_spi.c
@@ -9,7 +9,7 @@
 
 #include <linux/kernel.h>
 #include <linux/module.h>
-#include <linux/slab.h>
+#include <linux/mod_devicetable.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 
@@ -51,6 +51,10 @@ static const struct of_device_id st_press_of_match[] = {
 		.compatible = "st,lps22hh",
 		.data = LPS22HH_PRESS_DEV_NAME,
 	},
+	{
+		.compatible = "st,lps22df",
+		.data = LPS22DF_PRESS_DEV_NAME,
+	},
 	{},
 };
 MODULE_DEVICE_TABLE(of, st_press_of_match);
@@ -82,18 +86,11 @@ static int st_press_spi_probe(struct spi_device *spi)
 	if (err < 0)
 		return err;
 
-	err = st_press_common_probe(indio_dev);
-	if (err < 0)
+	err = st_sensors_power_enable(indio_dev);
+	if (err)
 		return err;
 
-	return 0;
-}
-
-static int st_press_spi_remove(struct spi_device *spi)
-{
-	st_press_common_remove(spi_get_drvdata(spi));
-
-	return 0;
+	return st_press_common_probe(indio_dev);
 }
 
 static const struct spi_device_id st_press_id_table[] = {
@@ -104,6 +101,11 @@ static const struct spi_device_id st_press_id_table[] = {
 	{ LPS33HW_PRESS_DEV_NAME },
 	{ LPS35HW_PRESS_DEV_NAME },
 	{ LPS22HH_PRESS_DEV_NAME },
+	{ LPS22DF_PRESS_DEV_NAME },
+	{ "lps001wp-press" },
+	{ "lps25h-press", },
+	{ "lps331ap-press" },
+	{ "lps22hb-press" },
 	{},
 };
 MODULE_DEVICE_TABLE(spi, st_press_id_table);
@@ -114,7 +116,6 @@ static struct spi_driver st_press_driver = {
 		.of_match_table = st_press_of_match,
 	},
 	.probe = st_press_spi_probe,
-	.remove = st_press_spi_remove,
 	.id_table = st_press_id_table,
 };
 module_spi_driver(st_press_driver);
@@ -122,3 +123,4 @@ module_spi_driver(st_press_driver);
 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
 MODULE_DESCRIPTION("STMicroelectronics pressures spi driver");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ST_SENSORS);
diff --git a/drivers/iio/pressure/t5403.c b/drivers/iio/pressure/t5403.c
index 22abd28071b7..685fcf65334f 100644
--- a/drivers/iio/pressure/t5403.c
+++ b/drivers/iio/pressure/t5403.c
@@ -236,7 +236,6 @@ static int t5403_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	indio_dev->info = &t5403_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = t5403_channels;
 	indio_dev->num_channels = ARRAY_SIZE(t5403_channels);
diff --git a/drivers/iio/pressure/zpa2326.c b/drivers/iio/pressure/zpa2326.c
index 99dfe33ee402..67119a9b95fc 100644
--- a/drivers/iio/pressure/zpa2326.c
+++ b/drivers/iio/pressure/zpa2326.c
@@ -64,6 +64,7 @@
 #include <linux/iio/trigger.h>
 #include <linux/iio/trigger_consumer.h>
 #include <linux/iio/triggered_buffer.h>
+#include <asm/unaligned.h>
 #include "zpa2326.h"
 
 /* 200 ms should be enough for the longest conversion time in one-shot mode. */
@@ -102,7 +103,7 @@ static const struct zpa2326_frequency *zpa2326_highest_frequency(void)
 }
 
 /**
- * struct zpa_private - Per-device internal private state
+ * struct zpa2326_private - Per-device internal private state
  * @timestamp:  Buffered samples ready datum.
  * @regmap:     Underlying I2C / SPI bus adapter used to abstract slave register
  *              accesses.
@@ -161,7 +162,7 @@ bool zpa2326_isreg_writeable(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(zpa2326_isreg_writeable);
+EXPORT_SYMBOL_NS_GPL(zpa2326_isreg_writeable, IIO_ZPA2326);
 
 bool zpa2326_isreg_readable(struct device *dev, unsigned int reg)
 {
@@ -190,7 +191,7 @@ bool zpa2326_isreg_readable(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(zpa2326_isreg_readable);
+EXPORT_SYMBOL_NS_GPL(zpa2326_isreg_readable, IIO_ZPA2326);
 
 bool zpa2326_isreg_precious(struct device *dev, unsigned int reg)
 {
@@ -203,7 +204,7 @@ bool zpa2326_isreg_precious(struct device *dev, unsigned int reg)
 		return false;
 	}
 }
-EXPORT_SYMBOL_GPL(zpa2326_isreg_precious);
+EXPORT_SYMBOL_NS_GPL(zpa2326_isreg_precious, IIO_ZPA2326);
 
 /**
  * zpa2326_enable_device() - Enable device, i.e. get out of low power mode.
@@ -648,7 +649,7 @@ const struct dev_pm_ops zpa2326_pm_ops = {
 	SET_RUNTIME_PM_OPS(zpa2326_runtime_suspend, zpa2326_runtime_resume,
 			   NULL)
 };
-EXPORT_SYMBOL_GPL(zpa2326_pm_ops);
+EXPORT_SYMBOL_NS_GPL(zpa2326_pm_ops, IIO_ZPA2326);
 
 /**
  * zpa2326_resume() - Request the PM layer to power supply the device.
@@ -664,8 +665,10 @@ static int zpa2326_resume(const struct iio_dev *indio_dev)
 	int err;
 
 	err = pm_runtime_get_sync(indio_dev->dev.parent);
-	if (err < 0)
+	if (err < 0) {
+		pm_runtime_put(indio_dev->dev.parent);
 		return err;
+	}
 
 	if (err > 0) {
 		/*
@@ -1005,22 +1008,20 @@ static int zpa2326_fetch_raw_sample(const struct iio_dev *indio_dev,
 	struct regmap *regs = ((struct zpa2326_private *)
 			       iio_priv(indio_dev))->regmap;
 	int            err;
+	u8             v[3];
 
 	switch (type) {
 	case IIO_PRESSURE:
 		zpa2326_dbg(indio_dev, "fetching raw pressure sample");
 
-		err = regmap_bulk_read(regs, ZPA2326_PRESS_OUT_XL_REG, value,
-				       3);
+		err = regmap_bulk_read(regs, ZPA2326_PRESS_OUT_XL_REG, v, sizeof(v));
 		if (err) {
 			zpa2326_warn(indio_dev, "failed to fetch pressure (%d)",
 				     err);
 			return err;
 		}
 
-		/* Pressure is a 24 bits wide little-endian unsigned int. */
-		*value = (((u8 *)value)[2] << 16) | (((u8 *)value)[1] << 8) |
-			 ((u8 *)value)[0];
+		*value = get_unaligned_le24(&v[0]);
 
 		return IIO_VAL_INT;
 
@@ -1243,19 +1244,17 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
 	const struct zpa2326_private *priv = iio_priv(indio_dev);
 	int                           err;
 
-	/* Plug our own trigger event handler. */
-	err = iio_triggered_buffer_postenable(indio_dev);
-	if (err)
-		goto err;
-
 	if (!priv->waken) {
 		/*
 		 * We were already power supplied. Just clear hardware FIFO to
 		 * get rid of samples acquired during previous rounds (if any).
 		 */
 		err = zpa2326_clear_fifo(indio_dev, 0);
-		if (err)
-			goto err_buffer_predisable;
+		if (err) {
+			zpa2326_err(indio_dev,
+				    "failed to enable buffering (%d)", err);
+			return err;
+		}
 	}
 
 	if (!iio_trigger_using_own(indio_dev) && priv->waken) {
@@ -1264,18 +1263,14 @@ static int zpa2326_postenable_buffer(struct iio_dev *indio_dev)
 		 * powered up: reconfigure one-shot mode.
 		 */
 		err = zpa2326_config_oneshot(indio_dev, priv->irq);
-		if (err)
-			goto err_buffer_predisable;
+		if (err) {
+			zpa2326_err(indio_dev,
+				    "failed to enable buffering (%d)", err);
+			return err;
+		}
 	}
 
 	return 0;
-
-err_buffer_predisable:
-	iio_triggered_buffer_predisable(indio_dev);
-err:
-	zpa2326_err(indio_dev, "failed to enable buffering (%d)", err);
-
-	return err;
 }
 
 static int zpa2326_postdisable_buffer(struct iio_dev *indio_dev)
@@ -1288,7 +1283,6 @@ static int zpa2326_postdisable_buffer(struct iio_dev *indio_dev)
 static const struct iio_buffer_setup_ops zpa2326_buffer_setup_ops = {
 	.preenable   = zpa2326_preenable_buffer,
 	.postenable  = zpa2326_postenable_buffer,
-	.predisable  = iio_triggered_buffer_predisable,
 	.postdisable = zpa2326_postdisable_buffer
 };
 
@@ -1388,7 +1382,7 @@ static const struct iio_trigger_ops zpa2326_trigger_ops = {
 };
 
 /**
- * zpa2326_init_trigger() - Create an interrupt driven / hardware trigger
+ * zpa2326_init_managed_trigger() - Create interrupt driven / hardware trigger
  *                          allowing to notify external devices a new sample is
  *                          ready.
  * @parent:    Hardware sampling device @indio_dev is a child of.
@@ -1414,12 +1408,12 @@ static int zpa2326_init_managed_trigger(struct device          *parent,
 		return 0;
 
 	trigger = devm_iio_trigger_alloc(parent, "%s-dev%d",
-					 indio_dev->name, indio_dev->id);
+					 indio_dev->name,
+					 iio_device_id(indio_dev));
 	if (!trigger)
 		return -ENOMEM;
 
 	/* Basic setup. */
-	trigger->dev.parent = parent;
 	trigger->ops = &zpa2326_trigger_ops;
 
 	private->trigger = trigger;
@@ -1602,7 +1596,6 @@ static struct iio_dev *zpa2326_create_managed_iiodev(struct device *device,
 
 	/* Setup for userspace synchronous on demand sampling. */
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = device;
 	indio_dev->channels = zpa2326_channels;
 	indio_dev->num_channels = ARRAY_SIZE(zpa2326_channels);
 	indio_dev->name = name;
@@ -1705,7 +1698,7 @@ poweroff:
 
 	return err;
 }
-EXPORT_SYMBOL_GPL(zpa2326_probe);
+EXPORT_SYMBOL_NS_GPL(zpa2326_probe, IIO_ZPA2326);
 
 void zpa2326_remove(const struct device *parent)
 {
@@ -1716,7 +1709,7 @@ void zpa2326_remove(const struct device *parent)
 	zpa2326_sleep(indio_dev);
 	zpa2326_power_off(indio_dev, iio_priv(indio_dev));
 }
-EXPORT_SYMBOL_GPL(zpa2326_remove);
+EXPORT_SYMBOL_NS_GPL(zpa2326_remove, IIO_ZPA2326);
 
 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
 MODULE_DESCRIPTION("Core driver for Murata ZPA2326 pressure sensor");
diff --git a/drivers/iio/pressure/zpa2326_i2c.c b/drivers/iio/pressure/zpa2326_i2c.c
index 1a65791ba279..f26dd8cbb387 100644
--- a/drivers/iio/pressure/zpa2326_i2c.c
+++ b/drivers/iio/pressure/zpa2326_i2c.c
@@ -10,7 +10,7 @@
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/i2c.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include "zpa2326.h"
 
 /*
@@ -53,11 +53,9 @@ static int zpa2326_probe_i2c(struct i2c_client          *client,
 			     zpa2326_i2c_hwid(client), regmap);
 }
 
-static int zpa2326_remove_i2c(struct i2c_client *client)
+static void zpa2326_remove_i2c(struct i2c_client *client)
 {
 	zpa2326_remove(&client->dev);
-
-	return 0;
 }
 
 static const struct i2c_device_id zpa2326_i2c_ids[] = {
@@ -66,18 +64,16 @@ static const struct i2c_device_id zpa2326_i2c_ids[] = {
 };
 MODULE_DEVICE_TABLE(i2c, zpa2326_i2c_ids);
 
-#if defined(CONFIG_OF)
 static const struct of_device_id zpa2326_i2c_matches[] = {
 	{ .compatible = "murata,zpa2326" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, zpa2326_i2c_matches);
-#endif
 
 static struct i2c_driver zpa2326_i2c_driver = {
 	.driver = {
 		.name           = "zpa2326-i2c",
-		.of_match_table = of_match_ptr(zpa2326_i2c_matches),
+		.of_match_table = zpa2326_i2c_matches,
 		.pm             = ZPA2326_PM_OPS,
 	},
 	.probe    = zpa2326_probe_i2c,
@@ -89,3 +85,4 @@ module_i2c_driver(zpa2326_i2c_driver);
 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
 MODULE_DESCRIPTION("I2C driver for Murata ZPA2326 pressure sensor");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ZPA2326);
diff --git a/drivers/iio/pressure/zpa2326_spi.c b/drivers/iio/pressure/zpa2326_spi.c
index f37a4c738c75..9c1bcb82d360 100644
--- a/drivers/iio/pressure/zpa2326_spi.c
+++ b/drivers/iio/pressure/zpa2326_spi.c
@@ -10,7 +10,7 @@
 #include <linux/module.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
-#include <linux/of_device.h>
+#include <linux/mod_devicetable.h>
 #include "zpa2326.h"
 
 /*
@@ -57,11 +57,9 @@ static int zpa2326_probe_spi(struct spi_device *spi)
 			     spi->irq, ZPA2326_DEVICE_ID, regmap);
 }
 
-static int zpa2326_remove_spi(struct spi_device *spi)
+static void zpa2326_remove_spi(struct spi_device *spi)
 {
 	zpa2326_remove(&spi->dev);
-
-	return 0;
 }
 
 static const struct spi_device_id zpa2326_spi_ids[] = {
@@ -70,18 +68,16 @@ static const struct spi_device_id zpa2326_spi_ids[] = {
 };
 MODULE_DEVICE_TABLE(spi, zpa2326_spi_ids);
 
-#if defined(CONFIG_OF)
 static const struct of_device_id zpa2326_spi_matches[] = {
 	{ .compatible = "murata,zpa2326" },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, zpa2326_spi_matches);
-#endif
 
 static struct spi_driver zpa2326_spi_driver = {
 	.driver = {
 		.name           = "zpa2326-spi",
-		.of_match_table = of_match_ptr(zpa2326_spi_matches),
+		.of_match_table = zpa2326_spi_matches,
 		.pm             = ZPA2326_PM_OPS,
 	},
 	.probe    = zpa2326_probe_spi,
@@ -93,3 +89,4 @@ module_spi_driver(zpa2326_spi_driver);
 MODULE_AUTHOR("Gregor Boirie <gregor.boirie@parrot.com>");
 MODULE_DESCRIPTION("SPI driver for Murata ZPA2326 pressure sensor");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_ZPA2326);
diff --git a/drivers/iio/proximity/Kconfig b/drivers/iio/proximity/Kconfig
index 37606d400805..0e5c17530b8b 100644
--- a/drivers/iio/proximity/Kconfig
+++ b/drivers/iio/proximity/Kconfig
@@ -21,6 +21,17 @@ endmenu
 
 menu "Proximity and distance sensors"
 
+config CROS_EC_MKBP_PROXIMITY
+	tristate "ChromeOS EC MKBP Proximity sensor"
+	depends on CROS_EC
+	help
+	  Say Y here to enable the proximity sensor implemented via the ChromeOS EC MKBP
+	  switches protocol. You must enable one bus option (CROS_EC_I2C or CROS_EC_SPI)
+	  to use this.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called cros_ec_mkbp_proximity.
+
 config ISL29501
 	tristate "Intersil ISL29501 Time Of Flight sensor"
 	depends on I2C
@@ -101,6 +112,53 @@ config SRF04
 	  To compile this driver as a module, choose M here: the
 	  module will be called srf04.
 
+config SX_COMMON
+	tristate
+	help
+	  Common Semtech proximity sensor code.
+
+config SX9310
+	tristate "SX9310/SX9311 Semtech proximity sensor"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select REGMAP_I2C
+	select SX_COMMON
+	depends on I2C
+	help
+	  Say Y here to build a driver for Semtech's SX9310/SX9311 capacitive
+	  proximity/button sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sx9310.
+
+config SX9324
+	tristate "SX9324 Semtech proximity sensor"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select REGMAP_I2C
+	select SX_COMMON
+	depends on I2C
+	help
+	  Say Y here to build a driver for Semtech's SX9324
+	  proximity/button sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sx9324.
+
+config SX9360
+	tristate "SX9360 Semtech proximity sensor"
+	select IIO_BUFFER
+	select IIO_TRIGGERED_BUFFER
+	select REGMAP_I2C
+	select SX_COMMON
+	depends on I2C
+	help
+	  Say Y here to build a driver for Semtech's SX9360
+	  proximity/button sensor, a simplified SX9324.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called sx9360.
+
 config SX9500
 	tristate "SX9500 Semtech proximity sensor"
 	select IIO_BUFFER
@@ -127,6 +185,17 @@ config SRF08
 	  To compile this driver as a module, choose M here: the
 	  module will be called srf08.
 
+config VCNL3020
+	tristate "VCNL3020 proximity sensor"
+	select REGMAP_I2C
+	depends on I2C
+	help
+	  Say Y here if you want to build a driver for the Vishay VCNL3020
+	  proximity sensor.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called vcnl3020.
+
 config VL53L0X_I2C
 	tristate "STMicroelectronics VL53L0X ToF ranger sensor (I2C)"
 	depends on I2C
diff --git a/drivers/iio/proximity/Makefile b/drivers/iio/proximity/Makefile
index c591b019304e..cc838bb5408a 100644
--- a/drivers/iio/proximity/Makefile
+++ b/drivers/iio/proximity/Makefile
@@ -5,6 +5,7 @@
 
 # When adding new entries keep the list in alphabetical order
 obj-$(CONFIG_AS3935)		+= as3935.o
+obj-$(CONFIG_CROS_EC_MKBP_PROXIMITY) += cros_ec_mkbp_proximity.o
 obj-$(CONFIG_ISL29501)		+= isl29501.o
 obj-$(CONFIG_LIDAR_LITE_V2)	+= pulsedlight-lidar-lite-v2.o
 obj-$(CONFIG_MB1232)		+= mb1232.o
@@ -12,6 +13,11 @@ obj-$(CONFIG_PING)		+= ping.o
 obj-$(CONFIG_RFD77402)		+= rfd77402.o
 obj-$(CONFIG_SRF04)		+= srf04.o
 obj-$(CONFIG_SRF08)		+= srf08.o
+obj-$(CONFIG_SX9310)		+= sx9310.o
+obj-$(CONFIG_SX9324)		+= sx9324.o
+obj-$(CONFIG_SX9360)		+= sx9360.o
+obj-$(CONFIG_SX_COMMON) 	+= sx_common.o
 obj-$(CONFIG_SX9500)		+= sx9500.o
+obj-$(CONFIG_VCNL3020)		+= vcnl3020.o
 obj-$(CONFIG_VL53L0X_I2C)	+= vl53l0x-i2c.o
 
diff --git a/drivers/iio/proximity/as3935.c b/drivers/iio/proximity/as3935.c
index bac9a433dd19..ebc95cf8f5f4 100644
--- a/drivers/iio/proximity/as3935.c
+++ b/drivers/iio/proximity/as3935.c
@@ -7,10 +7,12 @@
  */
 
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/init.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
 #include <linux/workqueue.h>
+#include <linux/devm-helpers.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
 #include <linux/irq.h>
@@ -58,8 +60,12 @@ struct as3935_state {
 	unsigned long noise_tripped;
 	u32 tune_cap;
 	u32 nflwdth_reg;
-	u8 buffer[16]; /* 8-bit data + 56-bit padding + 64-bit timestamp */
-	u8 buf[2] ____cacheline_aligned;
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u8 chan;
+		s64 timestamp __aligned(8);
+	} scan;
+	u8 buf[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static const struct iio_chan_spec as3935_channels[] = {
@@ -117,7 +123,7 @@ static ssize_t as3935_sensor_sensitivity_show(struct device *dev,
 		return ret;
 	val = (val & AS3935_AFE_MASK) >> 1;
 
-	return sprintf(buf, "%d\n", val);
+	return sysfs_emit(buf, "%d\n", val);
 }
 
 static ssize_t as3935_sensor_sensitivity_store(struct device *dev,
@@ -128,7 +134,7 @@ static ssize_t as3935_sensor_sensitivity_store(struct device *dev,
 	unsigned long val;
 	int ret;
 
-	ret = kstrtoul((const char *) buf, 10, &val);
+	ret = kstrtoul(buf, 10, &val);
 	if (ret)
 		return -EINVAL;
 
@@ -148,7 +154,7 @@ static ssize_t as3935_noise_level_tripped_show(struct device *dev,
 	int ret;
 
 	mutex_lock(&st->lock);
-	ret = sprintf(buf, "%d\n", !time_after(jiffies, st->noise_tripped + HZ));
+	ret = sysfs_emit(buf, "%d\n", !time_after(jiffies, st->noise_tripped + HZ));
 	mutex_unlock(&st->lock);
 
 	return ret;
@@ -224,8 +230,8 @@ static irqreturn_t as3935_trigger_handler(int irq, void *private)
 	if (ret)
 		goto err_read;
 
-	st->buffer[0] = val & AS3935_DATA_MASK;
-	iio_push_to_buffers_with_timestamp(indio_dev, &st->buffer,
+	st->scan.chan = val & AS3935_DATA_MASK;
+	iio_push_to_buffers_with_timestamp(indio_dev, &st->scan,
 					   iio_get_time_ns(indio_dev));
 err_read:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -233,9 +239,6 @@ err_read:
 	return IRQ_HANDLED;
 }
 
-static const struct iio_trigger_ops iio_interrupt_trigger_ops = {
-};
-
 static void as3935_event_work(struct work_struct *work)
 {
 	struct as3935_state *st;
@@ -293,7 +296,6 @@ static void calibrate_as3935(struct as3935_state *st)
 	as3935_write(st, AS3935_NFLWDTH, st->nflwdth_reg);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int as3935_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
@@ -335,36 +337,23 @@ err_resume:
 	return ret;
 }
 
-static SIMPLE_DEV_PM_OPS(as3935_pm_ops, as3935_suspend, as3935_resume);
-#define AS3935_PM_OPS (&as3935_pm_ops)
-
-#else
-#define AS3935_PM_OPS NULL
-#endif
-
-static void as3935_stop_work(void *data)
-{
-	struct iio_dev *indio_dev = data;
-	struct as3935_state *st = iio_priv(indio_dev);
-
-	cancel_delayed_work_sync(&st->work);
-}
+static DEFINE_SIMPLE_DEV_PM_OPS(as3935_pm_ops, as3935_suspend, as3935_resume);
 
 static int as3935_probe(struct spi_device *spi)
 {
+	struct device *dev = &spi->dev;
 	struct iio_dev *indio_dev;
 	struct iio_trigger *trig;
 	struct as3935_state *st;
-	struct device_node *np = spi->dev.of_node;
 	int ret;
 
 	/* Be sure lightning event interrupt is specified */
 	if (!spi->irq) {
-		dev_err(&spi->dev, "unable to get event interrupt\n");
+		dev_err(dev, "unable to get event interrupt\n");
 		return -EINVAL;
 	}
 
-	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
 	if (!indio_dev)
 		return -ENOMEM;
 
@@ -374,86 +363,80 @@ static int as3935_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 	mutex_init(&st->lock);
 
-	ret = of_property_read_u32(np,
+	ret = device_property_read_u32(dev,
 			"ams,tuning-capacitor-pf", &st->tune_cap);
 	if (ret) {
 		st->tune_cap = 0;
-		dev_warn(&spi->dev,
-			"no tuning-capacitor-pf set, defaulting to %d",
+		dev_warn(dev, "no tuning-capacitor-pf set, defaulting to %d",
 			st->tune_cap);
 	}
 
 	if (st->tune_cap > MAX_PF_CAP) {
-		dev_err(&spi->dev,
-			"wrong tuning-capacitor-pf setting of %d\n",
+		dev_err(dev, "wrong tuning-capacitor-pf setting of %d\n",
 			st->tune_cap);
 		return -EINVAL;
 	}
 
-	ret = of_property_read_u32(np,
+	ret = device_property_read_u32(dev,
 			"ams,nflwdth", &st->nflwdth_reg);
 	if (!ret && st->nflwdth_reg > AS3935_NFLWDTH_MASK) {
-		dev_err(&spi->dev,
-			"invalid nflwdth setting of %d\n",
+		dev_err(dev, "invalid nflwdth setting of %d\n",
 			st->nflwdth_reg);
 		return -EINVAL;
 	}
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->channels = as3935_channels;
 	indio_dev->num_channels = ARRAY_SIZE(as3935_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &as3935_info;
 
-	trig = devm_iio_trigger_alloc(&spi->dev, "%s-dev%d",
-				      indio_dev->name, indio_dev->id);
+	trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
+				      indio_dev->name,
+				      iio_device_id(indio_dev));
 
 	if (!trig)
 		return -ENOMEM;
 
 	st->trig = trig;
 	st->noise_tripped = jiffies - HZ;
-	trig->dev.parent = indio_dev->dev.parent;
 	iio_trigger_set_drvdata(trig, indio_dev);
-	trig->ops = &iio_interrupt_trigger_ops;
 
-	ret = devm_iio_trigger_register(&spi->dev, trig);
+	ret = devm_iio_trigger_register(dev, trig);
 	if (ret) {
-		dev_err(&spi->dev, "failed to register trigger\n");
+		dev_err(dev, "failed to register trigger\n");
 		return ret;
 	}
 
-	ret = devm_iio_triggered_buffer_setup(&spi->dev, indio_dev,
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
 					      iio_pollfunc_store_time,
 					      as3935_trigger_handler, NULL);
 
 	if (ret) {
-		dev_err(&spi->dev, "cannot setup iio trigger\n");
+		dev_err(dev, "cannot setup iio trigger\n");
 		return ret;
 	}
 
 	calibrate_as3935(st);
 
-	INIT_DELAYED_WORK(&st->work, as3935_event_work);
-	ret = devm_add_action(&spi->dev, as3935_stop_work, indio_dev);
+	ret = devm_delayed_work_autocancel(dev, &st->work, as3935_event_work);
 	if (ret)
 		return ret;
 
-	ret = devm_request_irq(&spi->dev, spi->irq,
+	ret = devm_request_irq(dev, spi->irq,
 				&as3935_interrupt_handler,
 				IRQF_TRIGGER_RISING,
-				dev_name(&spi->dev),
+				dev_name(dev),
 				indio_dev);
 
 	if (ret) {
-		dev_err(&spi->dev, "unable to request irq\n");
+		dev_err(dev, "unable to request irq\n");
 		return ret;
 	}
 
-	ret = devm_iio_device_register(&spi->dev, indio_dev);
+	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret < 0) {
-		dev_err(&spi->dev, "unable to register device\n");
+		dev_err(dev, "unable to register device\n");
 		return ret;
 	}
 	return 0;
@@ -474,8 +457,8 @@ MODULE_DEVICE_TABLE(spi, as3935_id);
 static struct spi_driver as3935_driver = {
 	.driver = {
 		.name	= "as3935",
-		.of_match_table = of_match_ptr(as3935_of_match),
-		.pm	= AS3935_PM_OPS,
+		.of_match_table = as3935_of_match,
+		.pm	= pm_sleep_ptr(&as3935_pm_ops),
 	},
 	.probe		= as3935_probe,
 	.id_table	= as3935_id,
diff --git a/drivers/iio/proximity/cros_ec_mkbp_proximity.c b/drivers/iio/proximity/cros_ec_mkbp_proximity.c
new file mode 100644
index 000000000000..571ea1812246
--- /dev/null
+++ b/drivers/iio/proximity/cros_ec_mkbp_proximity.c
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Driver for cros-ec proximity sensor exposed through MKBP switch
+ *
+ * Copyright 2021 Google LLC.
+ */
+
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/notifier.h>
+#include <linux/of.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include <linux/platform_data/cros_ec_commands.h>
+#include <linux/platform_data/cros_ec_proto.h>
+
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+
+#include <asm/unaligned.h>
+
+struct cros_ec_mkbp_proximity_data {
+	struct cros_ec_device *ec;
+	struct iio_dev *indio_dev;
+	struct mutex lock;
+	struct notifier_block notifier;
+	int last_proximity;
+	bool enabled;
+};
+
+static const struct iio_event_spec cros_ec_mkbp_proximity_events[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec cros_ec_mkbp_proximity_chan_spec[] = {
+	{
+		.type = IIO_PROXIMITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
+		.event_spec = cros_ec_mkbp_proximity_events,
+		.num_event_specs = ARRAY_SIZE(cros_ec_mkbp_proximity_events),
+	},
+};
+
+static int cros_ec_mkbp_proximity_parse_state(const void *data)
+{
+	u32 switches = get_unaligned_le32(data);
+
+	return !!(switches & BIT(EC_MKBP_FRONT_PROXIMITY));
+}
+
+static int cros_ec_mkbp_proximity_query(struct cros_ec_device *ec_dev,
+					int *state)
+{
+	struct {
+		struct cros_ec_command msg;
+		union {
+			struct ec_params_mkbp_info params;
+			u32 switches;
+		};
+	} __packed buf = { };
+	struct ec_params_mkbp_info *params = &buf.params;
+	struct cros_ec_command *msg = &buf.msg;
+	u32 *switches = &buf.switches;
+	size_t insize = sizeof(*switches);
+	int ret;
+
+	msg->command = EC_CMD_MKBP_INFO;
+	msg->version = 1;
+	msg->outsize = sizeof(*params);
+	msg->insize = insize;
+
+	params->info_type = EC_MKBP_INFO_CURRENT;
+	params->event_type = EC_MKBP_EVENT_SWITCH;
+
+	ret = cros_ec_cmd_xfer_status(ec_dev, msg);
+	if (ret < 0)
+		return ret;
+
+	if (ret != insize) {
+		dev_warn(ec_dev->dev, "wrong result size: %d != %zu\n", ret,
+			 insize);
+		return -EPROTO;
+	}
+
+	*state = cros_ec_mkbp_proximity_parse_state(switches);
+	return IIO_VAL_INT;
+}
+
+static void cros_ec_mkbp_proximity_push_event(struct cros_ec_mkbp_proximity_data *data, int state)
+{
+	s64 timestamp;
+	u64 ev;
+	int dir;
+	struct iio_dev *indio_dev = data->indio_dev;
+	struct cros_ec_device *ec = data->ec;
+
+	mutex_lock(&data->lock);
+	if (state != data->last_proximity) {
+		if (data->enabled) {
+			timestamp = ktime_to_ns(ec->last_event_time);
+			if (iio_device_get_clock(indio_dev) != CLOCK_BOOTTIME)
+				timestamp = iio_get_time_ns(indio_dev);
+
+			dir = state ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
+			ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
+						  IIO_EV_TYPE_THRESH, dir);
+			iio_push_event(indio_dev, ev, timestamp);
+		}
+		data->last_proximity = state;
+	}
+	mutex_unlock(&data->lock);
+}
+
+static int cros_ec_mkbp_proximity_notify(struct notifier_block *nb,
+					 unsigned long queued_during_suspend,
+					 void *_ec)
+{
+	struct cros_ec_mkbp_proximity_data *data;
+	struct cros_ec_device *ec = _ec;
+	u8 event_type = ec->event_data.event_type & EC_MKBP_EVENT_TYPE_MASK;
+	void *switches;
+	int state;
+
+	if (event_type == EC_MKBP_EVENT_SWITCH) {
+		data = container_of(nb, struct cros_ec_mkbp_proximity_data,
+				    notifier);
+
+		switches = &ec->event_data.data.switches;
+		state = cros_ec_mkbp_proximity_parse_state(switches);
+		cros_ec_mkbp_proximity_push_event(data, state);
+	}
+
+	return NOTIFY_OK;
+}
+
+static int cros_ec_mkbp_proximity_read_raw(struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan, int *val,
+			   int *val2, long mask)
+{
+	struct cros_ec_mkbp_proximity_data *data = iio_priv(indio_dev);
+	struct cros_ec_device *ec = data->ec;
+
+	if (chan->type == IIO_PROXIMITY && mask == IIO_CHAN_INFO_RAW)
+		return cros_ec_mkbp_proximity_query(ec, val);
+
+	return -EINVAL;
+}
+
+static int cros_ec_mkbp_proximity_read_event_config(struct iio_dev *indio_dev,
+				    const struct iio_chan_spec *chan,
+				    enum iio_event_type type,
+				    enum iio_event_direction dir)
+{
+	struct cros_ec_mkbp_proximity_data *data = iio_priv(indio_dev);
+
+	return data->enabled;
+}
+
+static int cros_ec_mkbp_proximity_write_event_config(struct iio_dev *indio_dev,
+				     const struct iio_chan_spec *chan,
+				     enum iio_event_type type,
+				     enum iio_event_direction dir, int state)
+{
+	struct cros_ec_mkbp_proximity_data *data = iio_priv(indio_dev);
+
+	mutex_lock(&data->lock);
+	data->enabled = state;
+	mutex_unlock(&data->lock);
+
+	return 0;
+}
+
+static const struct iio_info cros_ec_mkbp_proximity_info = {
+	.read_raw = cros_ec_mkbp_proximity_read_raw,
+	.read_event_config = cros_ec_mkbp_proximity_read_event_config,
+	.write_event_config = cros_ec_mkbp_proximity_write_event_config,
+};
+
+static int cros_ec_mkbp_proximity_resume(struct device *dev)
+{
+	struct cros_ec_mkbp_proximity_data *data = dev_get_drvdata(dev);
+	struct cros_ec_device *ec = data->ec;
+	int ret, state;
+
+	ret = cros_ec_mkbp_proximity_query(ec, &state);
+	if (ret < 0) {
+		dev_warn(dev, "failed to fetch proximity state on resume: %d\n",
+			 ret);
+	} else {
+		cros_ec_mkbp_proximity_push_event(data, state);
+	}
+
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(cros_ec_mkbp_proximity_pm_ops, NULL,
+				cros_ec_mkbp_proximity_resume);
+
+static int cros_ec_mkbp_proximity_probe(struct platform_device *pdev)
+{
+	struct device *dev = &pdev->dev;
+	struct cros_ec_device *ec = dev_get_drvdata(dev->parent);
+	struct iio_dev *indio_dev;
+	struct cros_ec_mkbp_proximity_data *data;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->ec = ec;
+	data->indio_dev = indio_dev;
+	data->last_proximity = -1; /* Unknown to start */
+	mutex_init(&data->lock);
+	platform_set_drvdata(pdev, data);
+
+	indio_dev->name = dev->driver->name;
+	indio_dev->info = &cros_ec_mkbp_proximity_info;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = cros_ec_mkbp_proximity_chan_spec;
+	indio_dev->num_channels = ARRAY_SIZE(cros_ec_mkbp_proximity_chan_spec);
+
+	ret = devm_iio_device_register(dev, indio_dev);
+	if (ret)
+		return ret;
+
+	data->notifier.notifier_call = cros_ec_mkbp_proximity_notify;
+	blocking_notifier_chain_register(&ec->event_notifier, &data->notifier);
+
+	return 0;
+}
+
+static int cros_ec_mkbp_proximity_remove(struct platform_device *pdev)
+{
+	struct cros_ec_mkbp_proximity_data *data = platform_get_drvdata(pdev);
+	struct cros_ec_device *ec = data->ec;
+
+	blocking_notifier_chain_unregister(&ec->event_notifier,
+					   &data->notifier);
+
+	return 0;
+}
+
+static const struct of_device_id cros_ec_mkbp_proximity_of_match[] = {
+	{ .compatible = "google,cros-ec-mkbp-proximity" },
+	{}
+};
+MODULE_DEVICE_TABLE(of, cros_ec_mkbp_proximity_of_match);
+
+static struct platform_driver cros_ec_mkbp_proximity_driver = {
+	.driver = {
+		.name = "cros-ec-mkbp-proximity",
+		.of_match_table = cros_ec_mkbp_proximity_of_match,
+		.pm = pm_sleep_ptr(&cros_ec_mkbp_proximity_pm_ops),
+	},
+	.probe = cros_ec_mkbp_proximity_probe,
+	.remove = cros_ec_mkbp_proximity_remove,
+};
+module_platform_driver(cros_ec_mkbp_proximity_driver);
+
+MODULE_LICENSE("GPL v2");
+MODULE_DESCRIPTION("ChromeOS EC MKBP proximity sensor driver");
diff --git a/drivers/iio/proximity/isl29501.c b/drivers/iio/proximity/isl29501.c
index 5ae549075b27..5b6ea783795d 100644
--- a/drivers/iio/proximity/isl29501.c
+++ b/drivers/iio/proximity/isl29501.c
@@ -938,7 +938,7 @@ static irqreturn_t isl29501_trigger_handler(int irq, void *p)
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct isl29501_private *isl29501 = iio_priv(indio_dev);
 	const unsigned long *active_mask = indio_dev->active_scan_mask;
-	u32 buffer[4] = {}; /* 1x16-bit + ts */
+	u32 buffer[4] __aligned(8) = {}; /* 1x16-bit + naturally aligned ts */
 
 	if (test_bit(ISL29501_DISTANCE_SCAN_INDEX, active_mask))
 		isl29501_register_read(isl29501, REG_DISTANCE, buffer);
@@ -972,7 +972,6 @@ static int isl29501_probe(struct i2c_client *client,
 		return ret;
 
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->channels = isl29501_channels;
 	indio_dev->num_channels = ARRAY_SIZE(isl29501_channels);
 	indio_dev->name = client->name;
diff --git a/drivers/iio/proximity/mb1232.c b/drivers/iio/proximity/mb1232.c
index 166b3e6d7db8..0bca5f74de68 100644
--- a/drivers/iio/proximity/mb1232.c
+++ b/drivers/iio/proximity/mb1232.c
@@ -10,12 +10,14 @@
  * https://www.maxbotix.com/documents/I2CXL-MaxSonar-EZ_Datasheet.pdf
  */
 
+#include <linux/bitops.h>
 #include <linux/err.h>
 #include <linux/i2c.h>
-#include <linux/of_irq.h>
 #include <linux/delay.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/bitops.h>
+#include <linux/property.h>
+
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/iio/buffer.h>
@@ -40,6 +42,11 @@ struct mb1232_data {
 	 */
 	struct completion	ranging;
 	int			irqnr;
+	/* Ensure correct alignment of data to push to IIO buffer */
+	struct {
+		s16 distance;
+		s64 ts __aligned(8);
+	} scan;
 };
 
 static irqreturn_t mb1232_handle_irq(int irq, void *dev_id)
@@ -113,17 +120,13 @@ static irqreturn_t mb1232_trigger_handler(int irq, void *p)
 	struct iio_poll_func *pf = p;
 	struct iio_dev *indio_dev = pf->indio_dev;
 	struct mb1232_data *data = iio_priv(indio_dev);
-	/*
-	 * triggered buffer
-	 * 16-bit channel + 48-bit padding + 64-bit timestamp
-	 */
-	s16 buffer[8] = { 0 };
 
-	buffer[0] = mb1232_read_distance(data);
-	if (buffer[0] < 0)
+	data->scan.distance = mb1232_read_distance(data);
+	if (data->scan.distance < 0)
 		goto err;
 
-	iio_push_to_buffers_with_timestamp(indio_dev, buffer, pf->timestamp);
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
+					   pf->timestamp);
 
 err:
 	iio_trigger_notify_done(indio_dev->trig);
@@ -200,7 +203,6 @@ static int mb1232_probe(struct i2c_client *client,
 
 	indio_dev->info = &mb1232_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = mb1232_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mb1232_channels);
@@ -209,7 +211,7 @@ static int mb1232_probe(struct i2c_client *client,
 
 	init_completion(&data->ranging);
 
-	data->irqnr = irq_of_parse_and_map(dev->of_node, 0);
+	data->irqnr = fwnode_irq_get(dev_fwnode(&client->dev), 0);
 	if (data->irqnr <= 0) {
 		/* usage of interrupt is optional */
 		data->irqnr = -1;
diff --git a/drivers/iio/proximity/ping.c b/drivers/iio/proximity/ping.c
index 12b893c5b0ee..2ad69b150902 100644
--- a/drivers/iio/proximity/ping.c
+++ b/drivers/iio/proximity/ping.c
@@ -29,9 +29,8 @@
 #include <linux/err.h>
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/sched.h>
@@ -89,14 +88,14 @@ static irqreturn_t ping_handle_irq(int irq, void *dev_id)
 	return IRQ_HANDLED;
 }
 
-static int ping_read(struct ping_data *data)
+static int ping_read(struct iio_dev *indio_dev)
 {
+	struct ping_data *data = iio_priv(indio_dev);
 	int ret;
 	ktime_t ktime_dt;
 	s64 dt_ns;
 	u32 time_ns, distance_mm;
 	struct platform_device *pdev = to_platform_device(data->dev);
-	struct iio_dev *indio_dev = iio_priv_to_dev(data);
 
 	/*
 	 * just one read-echo-cycle can take place at a time
@@ -174,7 +173,7 @@ static int ping_read(struct ping_data *data)
 
 	/*
 	 * read error code of laser ping sensor and give users chance to
-	 * figure out error by using dynamic debuggging
+	 * figure out error by using dynamic debugging
 	 */
 	if (data->cfg->laserping_error) {
 		if ((time_ns > 12500000) && (time_ns <= 13500000)) {
@@ -228,7 +227,6 @@ static int ping_read_raw(struct iio_dev *indio_dev,
 			    struct iio_chan_spec const *channel, int *val,
 			    int *val2, long info)
 {
-	struct ping_data *data = iio_priv(indio_dev);
 	int ret;
 
 	if (channel->type != IIO_DISTANCE)
@@ -236,7 +234,7 @@ static int ping_read_raw(struct iio_dev *indio_dev,
 
 	switch (info) {
 	case IIO_CHAN_INFO_RAW:
-		ret = ping_read(data);
+		ret = ping_read(indio_dev);
 		if (ret < 0)
 			return ret;
 		*val = ret;
@@ -268,8 +266,8 @@ static const struct iio_chan_spec ping_chan_spec[] = {
 };
 
 static const struct of_device_id of_ping_match[] = {
-	{ .compatible = "parallax,ping", .data = &pa_ping_cfg},
-	{ .compatible = "parallax,laserping", .data = &pa_laser_ping_cfg},
+	{ .compatible = "parallax,ping", .data = &pa_ping_cfg },
+	{ .compatible = "parallax,laserping", .data = &pa_laser_ping_cfg },
 	{},
 };
 
@@ -289,7 +287,7 @@ static int ping_probe(struct platform_device *pdev)
 
 	data = iio_priv(indio_dev);
 	data->dev = dev;
-	data->cfg = of_device_get_match_data(dev);
+	data->cfg = device_get_match_data(dev);
 
 	mutex_init(&data->lock);
 	init_completion(&data->rising);
@@ -310,7 +308,6 @@ static int ping_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = "ping";
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &ping_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ping_chan_spec;
diff --git a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
index 5b369645ef49..791a33d5286c 100644
--- a/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
+++ b/drivers/iio/proximity/pulsedlight-lidar-lite-v2.c
@@ -13,6 +13,7 @@
 #include <linux/i2c.h>
 #include <linux/delay.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/pm_runtime.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -43,7 +44,11 @@ struct lidar_data {
 	int (*xfer)(struct lidar_data *data, u8 reg, u8 *val, int len);
 	int i2c_enabled;
 
-	u16 buffer[8]; /* 2 byte distance + 8 byte timestamp */
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		u16 chan;
+		s64 timestamp __aligned(8);
+	} scan;
 };
 
 static const struct iio_chan_spec lidar_channels[] = {
@@ -153,12 +158,15 @@ static int lidar_get_measurement(struct lidar_data *data, u16 *reg)
 	int tries = 10;
 	int ret;
 
-	pm_runtime_get_sync(&client->dev);
+	ret = pm_runtime_resume_and_get(&client->dev);
+	if (ret < 0)
+		return ret;
 
 	/* start sample */
 	ret = lidar_write_control(data, LIDAR_REG_CONTROL_ACQUIRE);
 	if (ret < 0) {
 		dev_err(&client->dev, "cannot send start measurement command");
+		pm_runtime_put_noidle(&client->dev);
 		return ret;
 	}
 
@@ -228,9 +236,9 @@ static irqreturn_t lidar_trigger_handler(int irq, void *private)
 	struct lidar_data *data = iio_priv(indio_dev);
 	int ret;
 
-	ret = lidar_get_measurement(data, data->buffer);
+	ret = lidar_get_measurement(data, &data->scan.chan);
 	if (!ret) {
-		iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
+		iio_push_to_buffers_with_timestamp(indio_dev, &data->scan,
 						   iio_get_time_ns(indio_dev));
 	} else if (ret != -EINVAL) {
 		dev_err(&data->client->dev, "cannot read LIDAR measurement");
@@ -270,7 +278,6 @@ static int lidar_probe(struct i2c_client *client,
 	indio_dev->name = LIDAR_DRV_NAME;
 	indio_dev->channels = lidar_channels;
 	indio_dev->num_channels = ARRAY_SIZE(lidar_channels);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
 	i2c_set_clientdata(client, indio_dev);
@@ -304,7 +311,7 @@ error_unreg_buffer:
 	return ret;
 }
 
-static int lidar_remove(struct i2c_client *client)
+static void lidar_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 
@@ -313,8 +320,6 @@ static int lidar_remove(struct i2c_client *client)
 
 	pm_runtime_disable(&client->dev);
 	pm_runtime_set_suspended(&client->dev);
-
-	return 0;
 }
 
 static const struct i2c_device_id lidar_id[] = {
@@ -331,7 +336,6 @@ static const struct of_device_id lidar_dt_ids[] = {
 };
 MODULE_DEVICE_TABLE(of, lidar_dt_ids);
 
-#ifdef CONFIG_PM
 static int lidar_pm_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -351,18 +355,16 @@ static int lidar_pm_runtime_resume(struct device *dev)
 
 	return ret;
 }
-#endif
 
 static const struct dev_pm_ops lidar_pm_ops = {
-	SET_RUNTIME_PM_OPS(lidar_pm_runtime_suspend,
-			   lidar_pm_runtime_resume, NULL)
+	RUNTIME_PM_OPS(lidar_pm_runtime_suspend, lidar_pm_runtime_resume, NULL)
 };
 
 static struct i2c_driver lidar_driver = {
 	.driver = {
 		.name	= LIDAR_DRV_NAME,
-		.of_match_table	= of_match_ptr(lidar_dt_ids),
-		.pm	= &lidar_pm_ops,
+		.of_match_table	= lidar_dt_ids,
+		.pm	= pm_ptr(&lidar_pm_ops),
 	},
 	.probe		= lidar_probe,
 	.remove		= lidar_remove,
diff --git a/drivers/iio/proximity/rfd77402.c b/drivers/iio/proximity/rfd77402.c
index 36480c0100a7..cb80b3c9d073 100644
--- a/drivers/iio/proximity/rfd77402.c
+++ b/drivers/iio/proximity/rfd77402.c
@@ -90,18 +90,18 @@ static const struct iio_chan_spec rfd77402_channels[] = {
 	},
 };
 
-static int rfd77402_set_state(struct rfd77402_data *data, u8 state, u16 check)
+static int rfd77402_set_state(struct i2c_client *client, u8 state, u16 check)
 {
 	int ret;
 
-	ret = i2c_smbus_write_byte_data(data->client, RFD77402_CMD_R,
+	ret = i2c_smbus_write_byte_data(client, RFD77402_CMD_R,
 					state | RFD77402_CMD_VALID);
 	if (ret < 0)
 		return ret;
 
 	usleep_range(10000, 20000);
 
-	ret = i2c_smbus_read_word_data(data->client, RFD77402_STATUS_R);
+	ret = i2c_smbus_read_word_data(client, RFD77402_STATUS_R);
 	if (ret < 0)
 		return ret;
 	if ((ret & RFD77402_STATUS_PM_MASK) != check)
@@ -110,24 +110,24 @@ static int rfd77402_set_state(struct rfd77402_data *data, u8 state, u16 check)
 	return 0;
 }
 
-static int rfd77402_measure(struct rfd77402_data *data)
+static int rfd77402_measure(struct i2c_client *client)
 {
 	int ret;
 	int tries = 10;
 
-	ret = rfd77402_set_state(data, RFD77402_CMD_MCPU_ON,
+	ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_ON,
 				 RFD77402_STATUS_MCPU_ON);
 	if (ret < 0)
 		return ret;
 
-	ret = i2c_smbus_write_byte_data(data->client, RFD77402_CMD_R,
+	ret = i2c_smbus_write_byte_data(client, RFD77402_CMD_R,
 					RFD77402_CMD_SINGLE |
 					RFD77402_CMD_VALID);
 	if (ret < 0)
 		goto err;
 
 	while (tries-- > 0) {
-		ret = i2c_smbus_read_byte_data(data->client, RFD77402_ICSR);
+		ret = i2c_smbus_read_byte_data(client, RFD77402_ICSR);
 		if (ret < 0)
 			goto err;
 		if (ret & RFD77402_ICSR_RESULT)
@@ -140,7 +140,7 @@ static int rfd77402_measure(struct rfd77402_data *data)
 		goto err;
 	}
 
-	ret = i2c_smbus_read_word_data(data->client, RFD77402_RESULT_R);
+	ret = i2c_smbus_read_word_data(client, RFD77402_RESULT_R);
 	if (ret < 0)
 		goto err;
 
@@ -153,7 +153,7 @@ static int rfd77402_measure(struct rfd77402_data *data)
 	return (ret & RFD77402_RESULT_DIST_MASK) >> 2;
 
 err:
-	rfd77402_set_state(data, RFD77402_CMD_MCPU_OFF,
+	rfd77402_set_state(client, RFD77402_CMD_MCPU_OFF,
 			   RFD77402_STATUS_MCPU_OFF);
 	return ret;
 }
@@ -168,7 +168,7 @@ static int rfd77402_read_raw(struct iio_dev *indio_dev,
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
 		mutex_lock(&data->lock);
-		ret = rfd77402_measure(data);
+		ret = rfd77402_measure(data->client);
 		mutex_unlock(&data->lock);
 		if (ret < 0)
 			return ret;
@@ -188,23 +188,23 @@ static const struct iio_info rfd77402_info = {
 	.read_raw = rfd77402_read_raw,
 };
 
-static int rfd77402_init(struct rfd77402_data *data)
+static int rfd77402_init(struct i2c_client *client)
 {
 	int ret, i;
 
-	ret = rfd77402_set_state(data, RFD77402_CMD_STANDBY,
+	ret = rfd77402_set_state(client, RFD77402_CMD_STANDBY,
 				 RFD77402_STATUS_STANDBY);
 	if (ret < 0)
 		return ret;
 
 	/* configure INT pad as push-pull, active low */
-	ret = i2c_smbus_write_byte_data(data->client, RFD77402_ICSR,
+	ret = i2c_smbus_write_byte_data(client, RFD77402_ICSR,
 					RFD77402_ICSR_INT_MODE);
 	if (ret < 0)
 		return ret;
 
 	/* I2C configuration */
-	ret = i2c_smbus_write_word_data(data->client, RFD77402_I2C_INIT_CFG,
+	ret = i2c_smbus_write_word_data(client, RFD77402_I2C_INIT_CFG,
 					RFD77402_I2C_ADDR_INCR |
 					RFD77402_I2C_DATA_INCR |
 					RFD77402_I2C_HOST_DEBUG	|
@@ -213,45 +213,50 @@ static int rfd77402_init(struct rfd77402_data *data)
 		return ret;
 
 	/* set initialization */
-	ret = i2c_smbus_write_word_data(data->client, RFD77402_PMU_CFG, 0x0500);
+	ret = i2c_smbus_write_word_data(client, RFD77402_PMU_CFG, 0x0500);
 	if (ret < 0)
 		return ret;
 
-	ret = rfd77402_set_state(data, RFD77402_CMD_MCPU_OFF,
+	ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_OFF,
 				 RFD77402_STATUS_MCPU_OFF);
 	if (ret < 0)
 		return ret;
 
 	/* set initialization */
-	ret = i2c_smbus_write_word_data(data->client, RFD77402_PMU_CFG, 0x0600);
+	ret = i2c_smbus_write_word_data(client, RFD77402_PMU_CFG, 0x0600);
 	if (ret < 0)
 		return ret;
 
-	ret = rfd77402_set_state(data, RFD77402_CMD_MCPU_ON,
+	ret = rfd77402_set_state(client, RFD77402_CMD_MCPU_ON,
 				 RFD77402_STATUS_MCPU_ON);
 	if (ret < 0)
 		return ret;
 
 	for (i = 0; i < ARRAY_SIZE(rf77402_tof_config); i++) {
-		ret = i2c_smbus_write_word_data(data->client,
+		ret = i2c_smbus_write_word_data(client,
 						rf77402_tof_config[i].reg,
 						rf77402_tof_config[i].val);
 		if (ret < 0)
 			return ret;
 	}
 
-	ret = rfd77402_set_state(data, RFD77402_CMD_STANDBY,
+	ret = rfd77402_set_state(client, RFD77402_CMD_STANDBY,
 				 RFD77402_STATUS_STANDBY);
 
 	return ret;
 }
 
-static int rfd77402_powerdown(struct rfd77402_data *data)
+static int rfd77402_powerdown(struct i2c_client *client)
 {
-	return rfd77402_set_state(data, RFD77402_CMD_STANDBY,
+	return rfd77402_set_state(client, RFD77402_CMD_STANDBY,
 				  RFD77402_STATUS_STANDBY);
 }
 
+static void rfd77402_disable(void *client)
+{
+	rfd77402_powerdown(client);
+}
+
 static int rfd77402_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
@@ -270,64 +275,41 @@ static int rfd77402_probe(struct i2c_client *client,
 		return -ENOMEM;
 
 	data = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->info = &rfd77402_info;
 	indio_dev->channels = rfd77402_channels;
 	indio_dev->num_channels = ARRAY_SIZE(rfd77402_channels);
 	indio_dev->name = RFD77402_DRV_NAME;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = rfd77402_init(data);
+	ret = rfd77402_init(client);
 	if (ret < 0)
 		return ret;
 
-	ret = iio_device_register(indio_dev);
+	ret = devm_add_action_or_reset(&client->dev, rfd77402_disable, client);
 	if (ret)
-		goto err_powerdown;
-
-	return 0;
-
-err_powerdown:
-	rfd77402_powerdown(data);
-	return ret;
-}
-
-static int rfd77402_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-
-	iio_device_unregister(indio_dev);
-	rfd77402_powerdown(iio_priv(indio_dev));
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int rfd77402_suspend(struct device *dev)
 {
-	struct rfd77402_data *data = iio_priv(i2c_get_clientdata(
-				     to_i2c_client(dev)));
-
-	return rfd77402_powerdown(data);
+	return rfd77402_powerdown(to_i2c_client(dev));
 }
 
 static int rfd77402_resume(struct device *dev)
 {
-	struct rfd77402_data *data = iio_priv(i2c_get_clientdata(
-				     to_i2c_client(dev)));
-
-	return rfd77402_init(data);
+	return rfd77402_init(to_i2c_client(dev));
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(rfd77402_pm_ops, rfd77402_suspend, rfd77402_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(rfd77402_pm_ops, rfd77402_suspend,
+				rfd77402_resume);
 
 static const struct i2c_device_id rfd77402_id[] = {
-	{ "rfd77402", 0},
+	{ "rfd77402", 0 },
 	{ }
 };
 MODULE_DEVICE_TABLE(i2c, rfd77402_id);
@@ -335,10 +317,9 @@ MODULE_DEVICE_TABLE(i2c, rfd77402_id);
 static struct i2c_driver rfd77402_driver = {
 	.driver = {
 		.name   = RFD77402_DRV_NAME,
-		.pm     = &rfd77402_pm_ops,
+		.pm     = pm_sleep_ptr(&rfd77402_pm_ops),
 	},
 	.probe  = rfd77402_probe,
-	.remove = rfd77402_remove,
 	.id_table = rfd77402_id,
 };
 
diff --git a/drivers/iio/proximity/srf04.c b/drivers/iio/proximity/srf04.c
index 01eb8cc63076..faf2f806ce80 100644
--- a/drivers/iio/proximity/srf04.c
+++ b/drivers/iio/proximity/srf04.c
@@ -5,7 +5,7 @@
  * Copyright (c) 2017 Andreas Klinger <ak@it-klinger.de>
  *
  * For details about the device see:
- * http://www.robot-electronics.co.uk/htm/srf04tech.htm
+ * https://www.robot-electronics.co.uk/htm/srf04tech.htm
  *
  * the measurement cycle as timing diagram looks like:
  *
@@ -37,14 +37,14 @@
 #include <linux/err.h>
 #include <linux/gpio/consumer.h>
 #include <linux/kernel.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/platform_device.h>
 #include <linux/property.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/delay.h>
+#include <linux/pm_runtime.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 
@@ -56,6 +56,7 @@ struct srf04_data {
 	struct device		*dev;
 	struct gpio_desc	*gpiod_trig;
 	struct gpio_desc	*gpiod_echo;
+	struct gpio_desc	*gpiod_power;
 	struct mutex		lock;
 	int			irqnr;
 	ktime_t			ts_rising;
@@ -63,6 +64,7 @@ struct srf04_data {
 	struct completion	rising;
 	struct completion	falling;
 	const struct srf04_cfg	*cfg;
+	int			startup_time_ms;
 };
 
 static const struct srf04_cfg srf04_cfg = {
@@ -97,6 +99,11 @@ static int srf04_read(struct srf04_data *data)
 	u64 dt_ns;
 	u32 time_ns, distance_mm;
 
+	if (data->gpiod_power) {
+		ret = pm_runtime_resume_and_get(data->dev);
+		if (ret < 0)
+			return ret;
+	}
 	/*
 	 * just one read-echo-cycle can take place at a time
 	 * ==> lock against concurrent reading calls
@@ -110,6 +117,11 @@ static int srf04_read(struct srf04_data *data)
 	udelay(data->cfg->trigger_pulse_us);
 	gpiod_set_value(data->gpiod_trig, 0);
 
+	if (data->gpiod_power) {
+		pm_runtime_mark_last_busy(data->dev);
+		pm_runtime_put_autosuspend(data->dev);
+	}
+
 	/* it should not take more than 20 ms until echo is rising */
 	ret = wait_for_completion_killable_timeout(&data->rising, HZ/50);
 	if (ret < 0) {
@@ -222,12 +234,12 @@ static const struct iio_chan_spec srf04_chan_spec[] = {
 };
 
 static const struct of_device_id of_srf04_match[] = {
-	{ .compatible = "devantech,srf04", .data = &srf04_cfg},
-	{ .compatible = "maxbotix,mb1000", .data = &mb_lv_cfg},
-	{ .compatible = "maxbotix,mb1010", .data = &mb_lv_cfg},
-	{ .compatible = "maxbotix,mb1020", .data = &mb_lv_cfg},
-	{ .compatible = "maxbotix,mb1030", .data = &mb_lv_cfg},
-	{ .compatible = "maxbotix,mb1040", .data = &mb_lv_cfg},
+	{ .compatible = "devantech,srf04", .data = &srf04_cfg },
+	{ .compatible = "maxbotix,mb1000", .data = &mb_lv_cfg },
+	{ .compatible = "maxbotix,mb1010", .data = &mb_lv_cfg },
+	{ .compatible = "maxbotix,mb1020", .data = &mb_lv_cfg },
+	{ .compatible = "maxbotix,mb1030", .data = &mb_lv_cfg },
+	{ .compatible = "maxbotix,mb1040", .data = &mb_lv_cfg },
 	{},
 };
 
@@ -248,7 +260,7 @@ static int srf04_probe(struct platform_device *pdev)
 
 	data = iio_priv(indio_dev);
 	data->dev = dev;
-	data->cfg = of_match_device(of_srf04_match, dev)->data;
+	data->cfg = device_get_match_data(dev);
 
 	mutex_init(&data->lock);
 	init_completion(&data->rising);
@@ -268,6 +280,20 @@ static int srf04_probe(struct platform_device *pdev)
 		return PTR_ERR(data->gpiod_echo);
 	}
 
+	data->gpiod_power = devm_gpiod_get_optional(dev, "power",
+								GPIOD_OUT_LOW);
+	if (IS_ERR(data->gpiod_power)) {
+		dev_err(dev, "failed to get power-gpios: err=%ld\n",
+						PTR_ERR(data->gpiod_power));
+		return PTR_ERR(data->gpiod_power);
+	}
+	if (data->gpiod_power) {
+		data->startup_time_ms = 100;
+		device_property_read_u32(dev, "startup-time-ms", &data->startup_time_ms);
+		dev_dbg(dev, "using power gpio: startup-time-ms=%d\n",
+							data->startup_time_ms);
+	}
+
 	if (gpiod_cansleep(data->gpiod_echo)) {
 		dev_err(data->dev, "cansleep-GPIOs not supported\n");
 		return -ENODEV;
@@ -290,20 +316,86 @@ static int srf04_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, indio_dev);
 
 	indio_dev->name = "srf04";
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &srf04_iio_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = srf04_chan_spec;
 	indio_dev->num_channels = ARRAY_SIZE(srf04_chan_spec);
 
-	return devm_iio_device_register(dev, indio_dev);
+	ret = iio_device_register(indio_dev);
+	if (ret < 0) {
+		dev_err(data->dev, "iio_device_register: %d\n", ret);
+		return ret;
+	}
+
+	if (data->gpiod_power) {
+		pm_runtime_set_autosuspend_delay(data->dev, 1000);
+		pm_runtime_use_autosuspend(data->dev);
+
+		ret = pm_runtime_set_active(data->dev);
+		if (ret) {
+			dev_err(data->dev, "pm_runtime_set_active: %d\n", ret);
+			iio_device_unregister(indio_dev);
+		}
+
+		pm_runtime_enable(data->dev);
+		pm_runtime_idle(data->dev);
+	}
+
+	return ret;
+}
+
+static int srf04_remove(struct platform_device *pdev)
+{
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct srf04_data *data = iio_priv(indio_dev);
+
+	iio_device_unregister(indio_dev);
+
+	if (data->gpiod_power) {
+		pm_runtime_disable(data->dev);
+		pm_runtime_set_suspended(data->dev);
+	}
+
+	return 0;
 }
 
+static int  srf04_pm_runtime_suspend(struct device *dev)
+{
+	struct platform_device *pdev = container_of(dev,
+						struct platform_device, dev);
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct srf04_data *data = iio_priv(indio_dev);
+
+	gpiod_set_value(data->gpiod_power, 0);
+
+	return 0;
+}
+
+static int srf04_pm_runtime_resume(struct device *dev)
+{
+	struct platform_device *pdev = container_of(dev,
+						struct platform_device, dev);
+	struct iio_dev *indio_dev = platform_get_drvdata(pdev);
+	struct srf04_data *data = iio_priv(indio_dev);
+
+	gpiod_set_value(data->gpiod_power, 1);
+	msleep(data->startup_time_ms);
+
+	return 0;
+}
+
+static const struct dev_pm_ops srf04_pm_ops = {
+	RUNTIME_PM_OPS(srf04_pm_runtime_suspend,
+		       srf04_pm_runtime_resume, NULL)
+};
+
 static struct platform_driver srf04_driver = {
 	.probe		= srf04_probe,
+	.remove		= srf04_remove,
 	.driver		= {
 		.name		= "srf04-gpio",
 		.of_match_table	= of_srf04_match,
+		.pm		= pm_ptr(&srf04_pm_ops),
 	},
 };
 
diff --git a/drivers/iio/proximity/srf08.c b/drivers/iio/proximity/srf08.c
index b23ce446b7be..7ed11339c31e 100644
--- a/drivers/iio/proximity/srf08.c
+++ b/drivers/iio/proximity/srf08.c
@@ -7,9 +7,9 @@
  * Copyright (c) 2016, 2017 Andreas Klinger <ak@it-klinger.de>
  *
  * For details about the device see:
- * http://www.robot-electronics.co.uk/htm/srf08tech.html
- * http://www.robot-electronics.co.uk/htm/srf10tech.htm
- * http://www.robot-electronics.co.uk/htm/srf02tech.htm
+ * https://www.robot-electronics.co.uk/htm/srf08tech.html
+ * https://www.robot-electronics.co.uk/htm/srf10tech.htm
+ * https://www.robot-electronics.co.uk/htm/srf02tech.htm
  */
 
 #include <linux/err.h>
@@ -63,11 +63,11 @@ struct srf08_data {
 	int			range_mm;
 	struct mutex		lock;
 
-	/*
-	 * triggered buffer
-	 * 1x16-bit channel + 3x16 padding + 4x16 timestamp
-	 */
-	s16			buffer[8];
+	/* Ensure timestamp is naturally aligned */
+	struct {
+		s16 chan;
+		s64 timestamp __aligned(8);
+	} scan;
 
 	/* Sensor-Type */
 	enum srf08_sensor_type	sensor_type;
@@ -190,9 +190,9 @@ static irqreturn_t srf08_trigger_handler(int irq, void *p)
 
 	mutex_lock(&data->lock);
 
-	data->buffer[0] = sensor_data;
+	data->scan.chan = sensor_data;
 	iio_push_to_buffers_with_timestamp(indio_dev,
-						data->buffer, pf->timestamp);
+					   &data->scan, pf->timestamp);
 
 	mutex_unlock(&data->lock);
 err:
@@ -354,7 +354,7 @@ static ssize_t srf08_write_sensitivity(struct srf08_data *data,
 		return -EINVAL;
 
 	for (i = 0; i < data->chip_info->num_sensitivity_avail; i++)
-		if (val && (val == data->chip_info->sensitivity_avail[i])) {
+		if (val == data->chip_info->sensitivity_avail[i]) {
 			regval = i;
 			break;
 		}
@@ -483,7 +483,6 @@ static int srf08_probe(struct i2c_client *client,
 	}
 
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = srf08_channels;
 	indio_dev->num_channels = ARRAY_SIZE(srf08_channels);
@@ -529,9 +528,9 @@ static int srf08_probe(struct i2c_client *client,
 }
 
 static const struct of_device_id of_srf08_match[] = {
-	{ .compatible = "devantech,srf02", (void *)SRF02},
-	{ .compatible = "devantech,srf08", (void *)SRF08},
-	{ .compatible = "devantech,srf10", (void *)SRF10},
+	{ .compatible = "devantech,srf02", (void *)SRF02 },
+	{ .compatible = "devantech,srf08", (void *)SRF08 },
+	{ .compatible = "devantech,srf10", (void *)SRF10 },
 	{},
 };
 
diff --git a/drivers/iio/proximity/sx9310.c b/drivers/iio/proximity/sx9310.c
new file mode 100644
index 000000000000..0e4747ccd3cf
--- /dev/null
+++ b/drivers/iio/proximity/sx9310.c
@@ -0,0 +1,1062 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2018 Google LLC.
+ *
+ * Driver for Semtech's SX9310/SX9311 capacitive proximity/button solution.
+ * Based on SX9500 driver and Semtech driver using the input framework
+ * <https://my.syncplicity.com/share/teouwsim8niiaud/
+ *          linux-driver-SX9310_NoSmartHSensing>.
+ * Reworked in April 2019 by Evan Green <evgreen@chromium.org>
+ * and in January 2020 by Daniel Campello <campello@chromium.org>.
+ */
+
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+#include <linux/iio/iio.h>
+
+#include "sx_common.h"
+
+/* Register definitions. */
+#define SX9310_REG_IRQ_SRC				SX_COMMON_REG_IRQ_SRC
+#define SX9310_REG_STAT0				0x01
+#define SX9310_REG_STAT1				0x02
+#define SX9310_REG_STAT1_COMPSTAT_MASK			GENMASK(3, 0)
+#define SX9310_REG_IRQ_MSK				0x03
+#define   SX9310_CONVDONE_IRQ				BIT(3)
+#define   SX9310_FAR_IRQ				BIT(5)
+#define   SX9310_CLOSE_IRQ				BIT(6)
+#define SX9310_REG_IRQ_FUNC				0x04
+
+#define SX9310_REG_PROX_CTRL0				0x10
+#define   SX9310_REG_PROX_CTRL0_SENSOREN_MASK		GENMASK(3, 0)
+#define   SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK		GENMASK(7, 4)
+#define   SX9310_REG_PROX_CTRL0_SCANPERIOD_15MS		0x01
+#define SX9310_REG_PROX_CTRL1				0x11
+#define SX9310_REG_PROX_CTRL2				0x12
+#define   SX9310_REG_PROX_CTRL2_COMBMODE_MASK		GENMASK(7, 6)
+#define   SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1_CS2_CS3 (0x03 << 6)
+#define   SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2	(0x02 << 6)
+#define   SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1	(0x01 << 6)
+#define   SX9310_REG_PROX_CTRL2_COMBMODE_CS3		(0x00 << 6)
+#define   SX9310_REG_PROX_CTRL2_SHIELDEN_MASK		GENMASK(3, 2)
+#define   SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC	(0x01 << 2)
+#define   SX9310_REG_PROX_CTRL2_SHIELDEN_GROUND		(0x02 << 2)
+#define SX9310_REG_PROX_CTRL3				0x13
+#define   SX9310_REG_PROX_CTRL3_GAIN0_MASK		GENMASK(3, 2)
+#define   SX9310_REG_PROX_CTRL3_GAIN0_X8		(0x03 << 2)
+#define   SX9310_REG_PROX_CTRL3_GAIN12_MASK		GENMASK(1, 0)
+#define   SX9310_REG_PROX_CTRL3_GAIN12_X4		0x02
+#define SX9310_REG_PROX_CTRL4				0x14
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_MASK		GENMASK(2, 0)
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST	0x07
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_FINE	0x06
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_FINE		0x05
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM	0x04
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM_COARSE 0x03
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_COARSE	0x02
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_COARSE	0x01
+#define   SX9310_REG_PROX_CTRL4_RESOLUTION_COARSEST	0x00
+#define SX9310_REG_PROX_CTRL5				0x15
+#define   SX9310_REG_PROX_CTRL5_RANGE_SMALL		(0x03 << 6)
+#define   SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK	GENMASK(3, 2)
+#define   SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1		(0x01 << 2)
+#define   SX9310_REG_PROX_CTRL5_RAWFILT_MASK		GENMASK(1, 0)
+#define   SX9310_REG_PROX_CTRL5_RAWFILT_SHIFT		0
+#define   SX9310_REG_PROX_CTRL5_RAWFILT_1P25		0x02
+#define SX9310_REG_PROX_CTRL6				0x16
+#define   SX9310_REG_PROX_CTRL6_AVGTHRESH_DEFAULT	0x20
+#define SX9310_REG_PROX_CTRL7				0x17
+#define   SX9310_REG_PROX_CTRL7_AVGNEGFILT_2		(0x01 << 3)
+#define   SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK		GENMASK(2, 0)
+#define   SX9310_REG_PROX_CTRL7_AVGPOSFILT_SHIFT	0
+#define   SX9310_REG_PROX_CTRL7_AVGPOSFILT_512		0x05
+#define SX9310_REG_PROX_CTRL8				0x18
+#define   SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK		GENMASK(7, 3)
+#define SX9310_REG_PROX_CTRL9				0x19
+#define   SX9310_REG_PROX_CTRL8_9_PTHRESH_28		(0x08 << 3)
+#define   SX9310_REG_PROX_CTRL8_9_PTHRESH_96		(0x11 << 3)
+#define   SX9310_REG_PROX_CTRL8_9_BODYTHRESH_900	0x03
+#define   SX9310_REG_PROX_CTRL8_9_BODYTHRESH_1500	0x05
+#define SX9310_REG_PROX_CTRL10				0x1a
+#define   SX9310_REG_PROX_CTRL10_HYST_MASK		GENMASK(5, 4)
+#define   SX9310_REG_PROX_CTRL10_HYST_6PCT		(0x01 << 4)
+#define   SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK	GENMASK(3, 2)
+#define   SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK	GENMASK(1, 0)
+#define   SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2		0x01
+#define SX9310_REG_PROX_CTRL11				0x1b
+#define SX9310_REG_PROX_CTRL12				0x1c
+#define SX9310_REG_PROX_CTRL13				0x1d
+#define SX9310_REG_PROX_CTRL14				0x1e
+#define SX9310_REG_PROX_CTRL15				0x1f
+#define SX9310_REG_PROX_CTRL16				0x20
+#define SX9310_REG_PROX_CTRL17				0x21
+#define SX9310_REG_PROX_CTRL18				0x22
+#define SX9310_REG_PROX_CTRL19				0x23
+#define SX9310_REG_SAR_CTRL0				0x2a
+#define   SX9310_REG_SAR_CTRL0_SARDEB_4_SAMPLES		(0x02 << 5)
+#define   SX9310_REG_SAR_CTRL0_SARHYST_8		(0x02 << 3)
+#define SX9310_REG_SAR_CTRL1				0x2b
+/* Each increment of the slope register is 0.0078125. */
+#define   SX9310_REG_SAR_CTRL1_SLOPE(_hnslope)		(_hnslope / 78125)
+#define SX9310_REG_SAR_CTRL2				0x2c
+#define   SX9310_REG_SAR_CTRL2_SAROFFSET_DEFAULT	0x3c
+
+#define SX9310_REG_SENSOR_SEL				0x30
+#define SX9310_REG_USE_MSB				0x31
+#define SX9310_REG_USE_LSB				0x32
+#define SX9310_REG_AVG_MSB				0x33
+#define SX9310_REG_AVG_LSB				0x34
+#define SX9310_REG_DIFF_MSB				0x35
+#define SX9310_REG_DIFF_LSB				0x36
+#define SX9310_REG_OFFSET_MSB				0x37
+#define SX9310_REG_OFFSET_LSB				0x38
+#define SX9310_REG_SAR_MSB				0x39
+#define SX9310_REG_SAR_LSB				0x3a
+#define SX9310_REG_I2C_ADDR				0x40
+#define SX9310_REG_PAUSE				0x41
+#define SX9310_REG_WHOAMI				0x42
+#define   SX9310_WHOAMI_VALUE				0x01
+#define   SX9311_WHOAMI_VALUE				0x02
+#define SX9310_REG_RESET				0x7f
+
+
+/* 4 hardware channels, as defined in STAT0: COMB, CS2, CS1 and CS0. */
+#define SX9310_NUM_CHANNELS				4
+static_assert(SX9310_NUM_CHANNELS <= SX_COMMON_MAX_NUM_CHANNELS);
+
+#define SX9310_NAMED_CHANNEL(idx, name)				 \
+{								 \
+	.type = IIO_PROXIMITY,					 \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		 \
+			      BIT(IIO_CHAN_INFO_HARDWAREGAIN),   \
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.info_mask_separate_available =				 \
+		BIT(IIO_CHAN_INFO_HARDWAREGAIN),		 \
+	.info_mask_shared_by_all_available =			 \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ),			 \
+	.indexed = 1,						 \
+	.channel = idx,						 \
+	.extend_name = name,					 \
+	.address = SX9310_REG_DIFF_MSB,				 \
+	.event_spec = sx_common_events,				 \
+	.num_event_specs = ARRAY_SIZE(sx_common_events),	 \
+	.scan_index = idx,					 \
+	.scan_type = {						 \
+		.sign = 's',					 \
+		.realbits = 12,					 \
+		.storagebits = 16,				 \
+		.endianness = IIO_BE,				 \
+	},							 \
+}
+#define SX9310_CHANNEL(idx) SX9310_NAMED_CHANNEL(idx, NULL)
+
+static const struct iio_chan_spec sx9310_channels[] = {
+	SX9310_CHANNEL(0),			/* CS0 */
+	SX9310_CHANNEL(1),			/* CS1 */
+	SX9310_CHANNEL(2),			/* CS2 */
+	SX9310_NAMED_CHANNEL(3, "comb"),	/* COMB */
+
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+/*
+ * Each entry contains the integer part (val) and the fractional part, in micro
+ * seconds. It conforms to the IIO output IIO_VAL_INT_PLUS_MICRO.
+ */
+static const struct {
+	int val;
+	int val2;
+} sx9310_samp_freq_table[] = {
+	{ 500, 0 }, /* 0000: Min (no idle time) */
+	{ 66, 666666 }, /* 0001: 15 ms */
+	{ 33, 333333 }, /* 0010: 30 ms (Typ.) */
+	{ 22, 222222 }, /* 0011: 45 ms */
+	{ 16, 666666 }, /* 0100: 60 ms */
+	{ 11, 111111 }, /* 0101: 90 ms */
+	{ 8, 333333 }, /* 0110: 120 ms */
+	{ 5, 0 }, /* 0111: 200 ms */
+	{ 2, 500000 }, /* 1000: 400 ms */
+	{ 1, 666666 }, /* 1001: 600 ms */
+	{ 1, 250000 }, /* 1010: 800 ms */
+	{ 1, 0 }, /* 1011: 1 s */
+	{ 0, 500000 }, /* 1100: 2 s */
+	{ 0, 333333 }, /* 1101: 3 s */
+	{ 0, 250000 }, /* 1110: 4 s */
+	{ 0, 200000 }, /* 1111: 5 s */
+};
+static const unsigned int sx9310_scan_period_table[] = {
+	2,   15,  30,  45,   60,   90,	 120,  200,
+	400, 600, 800, 1000, 2000, 3000, 4000, 5000,
+};
+
+static const struct regmap_range sx9310_writable_reg_ranges[] = {
+	regmap_reg_range(SX9310_REG_IRQ_MSK, SX9310_REG_IRQ_FUNC),
+	regmap_reg_range(SX9310_REG_PROX_CTRL0, SX9310_REG_PROX_CTRL19),
+	regmap_reg_range(SX9310_REG_SAR_CTRL0, SX9310_REG_SAR_CTRL2),
+	regmap_reg_range(SX9310_REG_SENSOR_SEL, SX9310_REG_SENSOR_SEL),
+	regmap_reg_range(SX9310_REG_OFFSET_MSB, SX9310_REG_OFFSET_LSB),
+	regmap_reg_range(SX9310_REG_PAUSE, SX9310_REG_PAUSE),
+	regmap_reg_range(SX9310_REG_RESET, SX9310_REG_RESET),
+};
+
+static const struct regmap_access_table sx9310_writeable_regs = {
+	.yes_ranges = sx9310_writable_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9310_writable_reg_ranges),
+};
+
+static const struct regmap_range sx9310_readable_reg_ranges[] = {
+	regmap_reg_range(SX9310_REG_IRQ_SRC, SX9310_REG_IRQ_FUNC),
+	regmap_reg_range(SX9310_REG_PROX_CTRL0, SX9310_REG_PROX_CTRL19),
+	regmap_reg_range(SX9310_REG_SAR_CTRL0, SX9310_REG_SAR_CTRL2),
+	regmap_reg_range(SX9310_REG_SENSOR_SEL, SX9310_REG_SAR_LSB),
+	regmap_reg_range(SX9310_REG_I2C_ADDR, SX9310_REG_WHOAMI),
+	regmap_reg_range(SX9310_REG_RESET, SX9310_REG_RESET),
+};
+
+static const struct regmap_access_table sx9310_readable_regs = {
+	.yes_ranges = sx9310_readable_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9310_readable_reg_ranges),
+};
+
+static const struct regmap_range sx9310_volatile_reg_ranges[] = {
+	regmap_reg_range(SX9310_REG_IRQ_SRC, SX9310_REG_STAT1),
+	regmap_reg_range(SX9310_REG_USE_MSB, SX9310_REG_DIFF_LSB),
+	regmap_reg_range(SX9310_REG_SAR_MSB, SX9310_REG_SAR_LSB),
+	regmap_reg_range(SX9310_REG_RESET, SX9310_REG_RESET),
+};
+
+static const struct regmap_access_table sx9310_volatile_regs = {
+	.yes_ranges = sx9310_volatile_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9310_volatile_reg_ranges),
+};
+
+static const struct regmap_config sx9310_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = SX9310_REG_RESET,
+	.cache_type = REGCACHE_RBTREE,
+
+	.wr_table = &sx9310_writeable_regs,
+	.rd_table = &sx9310_readable_regs,
+	.volatile_table = &sx9310_volatile_regs,
+};
+
+static int sx9310_read_prox_data(struct sx_common_data *data,
+				 const struct iio_chan_spec *chan, __be16 *val)
+{
+	int ret;
+
+	ret = regmap_write(data->regmap, SX9310_REG_SENSOR_SEL, chan->channel);
+	if (ret)
+		return ret;
+
+	return regmap_bulk_read(data->regmap, chan->address, val, sizeof(*val));
+}
+
+/*
+ * If we have no interrupt support, we have to wait for a scan period
+ * after enabling a channel to get a result.
+ */
+static int sx9310_wait_for_sample(struct sx_common_data *data)
+{
+	int ret;
+	unsigned int val;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0, &val);
+	if (ret)
+		return ret;
+
+	val = FIELD_GET(SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK, val);
+
+	msleep(sx9310_scan_period_table[val]);
+
+	return 0;
+}
+
+static int sx9310_read_gain(struct sx_common_data *data,
+			    const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int regval, gain;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL3, &regval);
+	if (ret)
+		return ret;
+
+	switch (chan->channel) {
+	case 0:
+	case 3:
+		gain = FIELD_GET(SX9310_REG_PROX_CTRL3_GAIN0_MASK, regval);
+		break;
+	case 1:
+	case 2:
+		gain = FIELD_GET(SX9310_REG_PROX_CTRL3_GAIN12_MASK, regval);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	*val = 1 << gain;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9310_read_samp_freq(struct sx_common_data *data, int *val, int *val2)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK, regval);
+	*val = sx9310_samp_freq_table[regval].val;
+	*val2 = sx9310_samp_freq_table[regval].val2;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int sx9310_read_raw(struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan, int *val,
+			   int *val2, long mask)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret;
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = sx_common_read_proximity(data, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = sx9310_read_gain(data, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return sx9310_read_samp_freq(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const int sx9310_gain_vals[] = { 1, 2, 4, 8 };
+
+static int sx9310_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(sx9310_gain_vals);
+		*vals = sx9310_gain_vals;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(sx9310_samp_freq_table) * 2;
+		*vals = (int *)sx9310_samp_freq_table;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const unsigned int sx9310_pthresh_codes[] = {
+	2, 4, 6, 8, 12, 16, 20, 24, 28, 32, 40, 48, 56, 64, 72, 80, 88, 96, 112,
+	128, 144, 160, 192, 224, 256, 320, 384, 512, 640, 768, 1024, 1536
+};
+
+static int sx9310_get_thresh_reg(unsigned int channel)
+{
+	switch (channel) {
+	case 0:
+	case 3:
+		return SX9310_REG_PROX_CTRL8;
+	case 1:
+	case 2:
+		return SX9310_REG_PROX_CTRL9;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9310_read_thresh(struct sx_common_data *data,
+			      const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int reg;
+	unsigned int regval;
+	int ret;
+
+	reg = ret = sx9310_get_thresh_reg(chan->channel);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_read(data->regmap, reg, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval);
+	if (regval >= ARRAY_SIZE(sx9310_pthresh_codes))
+		return -EINVAL;
+
+	*val = sx9310_pthresh_codes[regval];
+	return IIO_VAL_INT;
+}
+
+static int sx9310_read_hysteresis(struct sx_common_data *data,
+				  const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int regval, pthresh;
+	int ret;
+
+	ret = sx9310_read_thresh(data, chan, &pthresh);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9310_REG_PROX_CTRL10_HYST_MASK, regval);
+	if (!regval)
+		regval = 5;
+
+	/* regval is at most 5 */
+	*val = pthresh >> (5 - regval);
+
+	return IIO_VAL_INT;
+}
+
+static int sx9310_read_far_debounce(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, regval);
+	if (regval)
+		*val = 1 << regval;
+	else
+		*val = 0;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9310_read_close_debounce(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL10, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, regval);
+	if (regval)
+		*val = 1 << regval;
+	else
+		*val = 0;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9310_read_event_val(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir,
+				 enum iio_event_info info, int *val, int *val2)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		return sx9310_read_thresh(data, chan, val);
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return sx9310_read_far_debounce(data, val);
+		case IIO_EV_DIR_FALLING:
+			return sx9310_read_close_debounce(data, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_HYSTERESIS:
+		return sx9310_read_hysteresis(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9310_write_thresh(struct sx_common_data *data,
+			       const struct iio_chan_spec *chan, int val)
+{
+	unsigned int reg;
+	unsigned int regval;
+	int ret, i;
+
+	reg = ret = sx9310_get_thresh_reg(chan->channel);
+	if (ret < 0)
+		return ret;
+
+	for (i = 0; i < ARRAY_SIZE(sx9310_pthresh_codes); i++) {
+		if (sx9310_pthresh_codes[i] == val) {
+			regval = i;
+			break;
+		}
+	}
+
+	if (i == ARRAY_SIZE(sx9310_pthresh_codes))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval);
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, reg,
+				 SX9310_REG_PROX_CTRL8_9_PTHRESH_MASK, regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9310_write_hysteresis(struct sx_common_data *data,
+				   const struct iio_chan_spec *chan, int _val)
+{
+	unsigned int hyst, val = _val;
+	int ret, pthresh;
+
+	ret = sx9310_read_thresh(data, chan, &pthresh);
+	if (ret < 0)
+		return ret;
+
+	if (val == 0)
+		hyst = 0;
+	else if (val == pthresh >> 2)
+		hyst = 3;
+	else if (val == pthresh >> 3)
+		hyst = 2;
+	else if (val == pthresh >> 4)
+		hyst = 1;
+	else
+		return -EINVAL;
+
+	hyst = FIELD_PREP(SX9310_REG_PROX_CTRL10_HYST_MASK, hyst);
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10,
+				 SX9310_REG_PROX_CTRL10_HYST_MASK, hyst);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9310_write_far_debounce(struct sx_common_data *data, int val)
+{
+	int ret;
+	unsigned int regval;
+
+	if (val > 0)
+		val = ilog2(val);
+	if (!FIELD_FIT(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, val))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK, val);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10,
+				 SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_MASK,
+				 regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9310_write_close_debounce(struct sx_common_data *data, int val)
+{
+	int ret;
+	unsigned int regval;
+
+	if (val > 0)
+		val = ilog2(val);
+	if (!FIELD_FIT(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, val))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK, val);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL10,
+				 SX9310_REG_PROX_CTRL10_CLOSE_DEBOUNCE_MASK,
+				 regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9310_write_event_val(struct iio_dev *indio_dev,
+				  const struct iio_chan_spec *chan,
+				  enum iio_event_type type,
+				  enum iio_event_direction dir,
+				  enum iio_event_info info, int val, int val2)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		return sx9310_write_thresh(data, chan, val);
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return sx9310_write_far_debounce(data, val);
+		case IIO_EV_DIR_FALLING:
+			return sx9310_write_close_debounce(data, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_HYSTERESIS:
+		return sx9310_write_hysteresis(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9310_set_samp_freq(struct sx_common_data *data, int val, int val2)
+{
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(sx9310_samp_freq_table); i++)
+		if (val == sx9310_samp_freq_table[i].val &&
+		    val2 == sx9310_samp_freq_table[i].val2)
+			break;
+
+	if (i == ARRAY_SIZE(sx9310_samp_freq_table))
+		return -EINVAL;
+
+	mutex_lock(&data->mutex);
+
+	ret = regmap_update_bits(
+		data->regmap, SX9310_REG_PROX_CTRL0,
+		SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK,
+		FIELD_PREP(SX9310_REG_PROX_CTRL0_SCANPERIOD_MASK, i));
+
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9310_write_gain(struct sx_common_data *data,
+			     const struct iio_chan_spec *chan, int val)
+{
+	unsigned int gain, mask;
+	int ret;
+
+	gain = ilog2(val);
+
+	switch (chan->channel) {
+	case 0:
+	case 3:
+		mask = SX9310_REG_PROX_CTRL3_GAIN0_MASK;
+		gain = FIELD_PREP(SX9310_REG_PROX_CTRL3_GAIN0_MASK, gain);
+		break;
+	case 1:
+	case 2:
+		mask = SX9310_REG_PROX_CTRL3_GAIN12_MASK;
+		gain = FIELD_PREP(SX9310_REG_PROX_CTRL3_GAIN12_MASK, gain);
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9310_REG_PROX_CTRL3, mask,
+				 gain);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9310_write_raw(struct iio_dev *indio_dev,
+			    const struct iio_chan_spec *chan, int val, int val2,
+			    long mask)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return sx9310_set_samp_freq(data, val, val2);
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		return sx9310_write_gain(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct sx_common_reg_default sx9310_default_regs[] = {
+	{ SX9310_REG_IRQ_MSK, 0x00 },
+	{ SX9310_REG_IRQ_FUNC, 0x00 },
+	/*
+	 * The lower 4 bits should not be set as it enable sensors measurements.
+	 * Turning the detection on before the configuration values are set to
+	 * good values can cause the device to return erroneous readings.
+	 */
+	{ SX9310_REG_PROX_CTRL0, SX9310_REG_PROX_CTRL0_SCANPERIOD_15MS },
+	{ SX9310_REG_PROX_CTRL1, 0x00 },
+	{ SX9310_REG_PROX_CTRL2, SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2 |
+				 SX9310_REG_PROX_CTRL2_SHIELDEN_DYNAMIC },
+	{ SX9310_REG_PROX_CTRL3, SX9310_REG_PROX_CTRL3_GAIN0_X8 |
+				 SX9310_REG_PROX_CTRL3_GAIN12_X4 },
+	{ SX9310_REG_PROX_CTRL4, SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST },
+	{ SX9310_REG_PROX_CTRL5, SX9310_REG_PROX_CTRL5_RANGE_SMALL |
+				 SX9310_REG_PROX_CTRL5_STARTUPSENS_CS1 |
+				 SX9310_REG_PROX_CTRL5_RAWFILT_1P25 },
+	{ SX9310_REG_PROX_CTRL6, SX9310_REG_PROX_CTRL6_AVGTHRESH_DEFAULT },
+	{ SX9310_REG_PROX_CTRL7, SX9310_REG_PROX_CTRL7_AVGNEGFILT_2 |
+				 SX9310_REG_PROX_CTRL7_AVGPOSFILT_512 },
+	{ SX9310_REG_PROX_CTRL8, SX9310_REG_PROX_CTRL8_9_PTHRESH_96 |
+				 SX9310_REG_PROX_CTRL8_9_BODYTHRESH_1500 },
+	{ SX9310_REG_PROX_CTRL9, SX9310_REG_PROX_CTRL8_9_PTHRESH_28 |
+				 SX9310_REG_PROX_CTRL8_9_BODYTHRESH_900 },
+	{ SX9310_REG_PROX_CTRL10, SX9310_REG_PROX_CTRL10_HYST_6PCT |
+				  SX9310_REG_PROX_CTRL10_FAR_DEBOUNCE_2 },
+	{ SX9310_REG_PROX_CTRL11, 0x00 },
+	{ SX9310_REG_PROX_CTRL12, 0x00 },
+	{ SX9310_REG_PROX_CTRL13, 0x00 },
+	{ SX9310_REG_PROX_CTRL14, 0x00 },
+	{ SX9310_REG_PROX_CTRL15, 0x00 },
+	{ SX9310_REG_PROX_CTRL16, 0x00 },
+	{ SX9310_REG_PROX_CTRL17, 0x00 },
+	{ SX9310_REG_PROX_CTRL18, 0x00 },
+	{ SX9310_REG_PROX_CTRL19, 0x00 },
+	{ SX9310_REG_SAR_CTRL0, SX9310_REG_SAR_CTRL0_SARDEB_4_SAMPLES |
+				SX9310_REG_SAR_CTRL0_SARHYST_8 },
+	{ SX9310_REG_SAR_CTRL1, SX9310_REG_SAR_CTRL1_SLOPE(10781250) },
+	{ SX9310_REG_SAR_CTRL2, SX9310_REG_SAR_CTRL2_SAROFFSET_DEFAULT },
+};
+
+/* Activate all channels and perform an initial compensation. */
+static int sx9310_init_compensation(struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret;
+	unsigned int val;
+	unsigned int ctrl0;
+
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0, &ctrl0);
+	if (ret)
+		return ret;
+
+	/* run the compensation phase on all channels */
+	ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0,
+			   ctrl0 | SX9310_REG_PROX_CTRL0_SENSOREN_MASK);
+	if (ret)
+		return ret;
+
+	ret = regmap_read_poll_timeout(data->regmap, SX9310_REG_STAT1, val,
+				       !(val & SX9310_REG_STAT1_COMPSTAT_MASK),
+				       20000, 2000000);
+	if (ret)
+		return ret;
+
+	regmap_write(data->regmap, SX9310_REG_PROX_CTRL0, ctrl0);
+	return ret;
+}
+
+static const struct sx_common_reg_default *
+sx9310_get_default_reg(struct device *dev, int idx,
+		       struct sx_common_reg_default *reg_def)
+{
+	u32 combined[SX9310_NUM_CHANNELS];
+	u32 start = 0, raw = 0, pos = 0;
+	unsigned long comb_mask = 0;
+	int ret, i, count;
+	const char *res;
+
+	memcpy(reg_def, &sx9310_default_regs[idx], sizeof(*reg_def));
+	switch (reg_def->reg) {
+	case SX9310_REG_PROX_CTRL2:
+		if (device_property_read_bool(dev, "semtech,cs0-ground")) {
+			reg_def->def &= ~SX9310_REG_PROX_CTRL2_SHIELDEN_MASK;
+			reg_def->def |= SX9310_REG_PROX_CTRL2_SHIELDEN_GROUND;
+		}
+
+		count = device_property_count_u32(dev, "semtech,combined-sensors");
+		if (count < 0 || count > ARRAY_SIZE(combined))
+			break;
+		ret = device_property_read_u32_array(dev, "semtech,combined-sensors",
+				combined, count);
+		if (ret)
+			break;
+
+		for (i = 0; i < count; i++)
+			comb_mask |= BIT(combined[i]);
+
+		reg_def->def &= ~SX9310_REG_PROX_CTRL2_COMBMODE_MASK;
+		if (comb_mask == (BIT(3) | BIT(2) | BIT(1) | BIT(0)))
+			reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1_CS2_CS3;
+		else if (comb_mask == (BIT(1) | BIT(2)))
+			reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS1_CS2;
+		else if (comb_mask == (BIT(0) | BIT(1)))
+			reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS0_CS1;
+		else if (comb_mask == BIT(3))
+			reg_def->def |= SX9310_REG_PROX_CTRL2_COMBMODE_CS3;
+
+		break;
+	case SX9310_REG_PROX_CTRL4:
+		ret = device_property_read_string(dev, "semtech,resolution", &res);
+		if (ret)
+			break;
+
+		reg_def->def &= ~SX9310_REG_PROX_CTRL4_RESOLUTION_MASK;
+		if (!strcmp(res, "coarsest"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_COARSEST;
+		else if (!strcmp(res, "very-coarse"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_COARSE;
+		else if (!strcmp(res, "coarse"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_COARSE;
+		else if (!strcmp(res, "medium-coarse"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM_COARSE;
+		else if (!strcmp(res, "medium"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_MEDIUM;
+		else if (!strcmp(res, "fine"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_FINE;
+		else if (!strcmp(res, "very-fine"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_VERY_FINE;
+		else if (!strcmp(res, "finest"))
+			reg_def->def |= SX9310_REG_PROX_CTRL4_RESOLUTION_FINEST;
+
+		break;
+	case SX9310_REG_PROX_CTRL5:
+		ret = device_property_read_u32(dev, "semtech,startup-sensor", &start);
+		if (ret) {
+			start = FIELD_GET(SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK,
+					  reg_def->def);
+		}
+
+		reg_def->def &= ~SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK;
+		reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL5_STARTUPSENS_MASK,
+					   start);
+
+		ret = device_property_read_u32(dev, "semtech,proxraw-strength", &raw);
+		if (ret) {
+			raw = FIELD_GET(SX9310_REG_PROX_CTRL5_RAWFILT_MASK,
+					reg_def->def);
+		} else {
+			raw = ilog2(raw);
+		}
+
+		reg_def->def &= ~SX9310_REG_PROX_CTRL5_RAWFILT_MASK;
+		reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL5_RAWFILT_MASK,
+					   raw);
+		break;
+	case SX9310_REG_PROX_CTRL7:
+		ret = device_property_read_u32(dev, "semtech,avg-pos-strength", &pos);
+		if (ret)
+			break;
+
+		/* Powers of 2, except for a gap between 16 and 64 */
+		pos = clamp(ilog2(pos), 3, 11) - (pos >= 32 ? 4 : 3);
+		reg_def->def &= ~SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK;
+		reg_def->def |= FIELD_PREP(SX9310_REG_PROX_CTRL7_AVGPOSFILT_MASK,
+					   pos);
+		break;
+	}
+
+	return reg_def;
+}
+
+static int sx9310_check_whoami(struct device *dev,
+			       struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	unsigned int long ddata;
+	unsigned int whoami;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9310_REG_WHOAMI, &whoami);
+	if (ret)
+		return ret;
+
+	ddata = (uintptr_t)device_get_match_data(dev);
+	if (ddata != whoami)
+		return -EINVAL;
+
+	switch (whoami) {
+	case SX9310_WHOAMI_VALUE:
+		indio_dev->name = "sx9310";
+		break;
+	case SX9311_WHOAMI_VALUE:
+		indio_dev->name = "sx9311";
+		break;
+	default:
+		return -ENODEV;
+	}
+
+	return 0;
+}
+
+static const struct sx_common_chip_info sx9310_chip_info = {
+	.reg_stat = SX9310_REG_STAT0,
+	.reg_irq_msk = SX9310_REG_IRQ_MSK,
+	.reg_enable_chan = SX9310_REG_PROX_CTRL0,
+	.reg_reset = SX9310_REG_RESET,
+
+	.mask_enable_chan = SX9310_REG_STAT1_COMPSTAT_MASK,
+	.irq_msk_offset = 3,
+	.num_channels = SX9310_NUM_CHANNELS,
+	.num_default_regs = ARRAY_SIZE(sx9310_default_regs),
+
+	.ops = {
+		.read_prox_data = sx9310_read_prox_data,
+		.check_whoami = sx9310_check_whoami,
+		.init_compensation = sx9310_init_compensation,
+		.wait_for_sample = sx9310_wait_for_sample,
+		.get_default_reg = sx9310_get_default_reg,
+	},
+
+	.iio_channels = sx9310_channels,
+	.num_iio_channels = ARRAY_SIZE(sx9310_channels),
+	.iio_info =  {
+		.read_raw = sx9310_read_raw,
+		.read_avail = sx9310_read_avail,
+		.read_event_value = sx9310_read_event_val,
+		.write_event_value = sx9310_write_event_val,
+		.write_raw = sx9310_write_raw,
+		.read_event_config = sx_common_read_event_config,
+		.write_event_config = sx_common_write_event_config,
+	},
+};
+
+static int sx9310_probe(struct i2c_client *client)
+{
+	return sx_common_probe(client, &sx9310_chip_info, &sx9310_regmap_config);
+}
+
+static int sx9310_suspend(struct device *dev)
+{
+	struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
+	u8 ctrl0;
+	int ret;
+
+	disable_irq_nosync(data->client->irq);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_read(data->regmap, SX9310_REG_PROX_CTRL0,
+			  &data->suspend_ctrl);
+	if (ret)
+		goto out;
+
+	ctrl0 = data->suspend_ctrl & ~SX9310_REG_PROX_CTRL0_SENSOREN_MASK;
+	ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0, ctrl0);
+	if (ret)
+		goto out;
+
+	ret = regmap_write(data->regmap, SX9310_REG_PAUSE, 0);
+
+out:
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+
+static int sx9310_resume(struct device *dev)
+{
+	struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	mutex_lock(&data->mutex);
+	ret = regmap_write(data->regmap, SX9310_REG_PAUSE, 1);
+	if (ret)
+		goto out;
+
+	ret = regmap_write(data->regmap, SX9310_REG_PROX_CTRL0,
+			   data->suspend_ctrl);
+
+out:
+	mutex_unlock(&data->mutex);
+	if (ret)
+		return ret;
+
+	enable_irq(data->client->irq);
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(sx9310_pm_ops, sx9310_suspend, sx9310_resume);
+
+static const struct acpi_device_id sx9310_acpi_match[] = {
+	{ "STH9310", SX9310_WHOAMI_VALUE },
+	{ "STH9311", SX9311_WHOAMI_VALUE },
+	{}
+};
+MODULE_DEVICE_TABLE(acpi, sx9310_acpi_match);
+
+static const struct of_device_id sx9310_of_match[] = {
+	{ .compatible = "semtech,sx9310", (void *)SX9310_WHOAMI_VALUE },
+	{ .compatible = "semtech,sx9311", (void *)SX9311_WHOAMI_VALUE },
+	{}
+};
+MODULE_DEVICE_TABLE(of, sx9310_of_match);
+
+static const struct i2c_device_id sx9310_id[] = {
+	{ "sx9310", SX9310_WHOAMI_VALUE },
+	{ "sx9311", SX9311_WHOAMI_VALUE },
+	{}
+};
+MODULE_DEVICE_TABLE(i2c, sx9310_id);
+
+static struct i2c_driver sx9310_driver = {
+	.driver = {
+		.name	= "sx9310",
+		.acpi_match_table = sx9310_acpi_match,
+		.of_match_table = sx9310_of_match,
+		.pm = pm_sleep_ptr(&sx9310_pm_ops),
+
+		/*
+		 * Lots of i2c transfers in probe + over 200 ms waiting in
+		 * sx9310_init_compensation() mean a slow probe; prefer async
+		 * so we don't delay boot if we're builtin to the kernel.
+		 */
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
+	.probe_new	= sx9310_probe,
+	.id_table	= sx9310_id,
+};
+module_i2c_driver(sx9310_driver);
+
+MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>");
+MODULE_AUTHOR("Daniel Campello <campello@chromium.org>");
+MODULE_DESCRIPTION("Driver for Semtech SX9310/SX9311 proximity sensor");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(SEMTECH_PROX);
diff --git a/drivers/iio/proximity/sx9324.c b/drivers/iio/proximity/sx9324.c
new file mode 100644
index 000000000000..977cf17cec52
--- /dev/null
+++ b/drivers/iio/proximity/sx9324.c
@@ -0,0 +1,1159 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Driver for Semtech's SX9324 capacitive proximity/button solution.
+ * Based on SX9324 driver and copy of datasheet at:
+ * https://edit.wpgdadawant.com/uploads/news_file/program/2019/30184/tech_files/program_30184_suggest_other_file.pdf
+ */
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include "sx_common.h"
+
+/* Register definitions. */
+#define SX9324_REG_IRQ_SRC		SX_COMMON_REG_IRQ_SRC
+#define SX9324_REG_STAT0		0x01
+#define SX9324_REG_STAT1		0x02
+#define SX9324_REG_STAT2		0x03
+#define SX9324_REG_STAT2_COMPSTAT_MASK	GENMASK(3, 0)
+#define SX9324_REG_STAT3		0x04
+#define SX9324_REG_IRQ_MSK		0x05
+#define SX9324_CONVDONE_IRQ		BIT(3)
+#define SX9324_FAR_IRQ			BIT(5)
+#define SX9324_CLOSE_IRQ		BIT(6)
+#define SX9324_REG_IRQ_CFG0		0x06
+#define SX9324_REG_IRQ_CFG1		0x07
+#define SX9324_REG_IRQ_CFG1_FAILCOND    0x80
+#define SX9324_REG_IRQ_CFG2		0x08
+
+#define SX9324_REG_GNRL_CTRL0		0x10
+#define SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK GENMASK(4, 0)
+#define SX9324_REG_GNRL_CTRL0_SCANPERIOD_100MS 0x16
+#define SX9324_REG_GNRL_CTRL1		0x11
+#define SX9324_REG_GNRL_CTRL1_PHEN_MASK GENMASK(3, 0)
+#define SX9324_REG_GNRL_CTRL1_PAUSECTRL 0x20
+
+#define SX9324_REG_I2C_ADDR		0x14
+#define SX9324_REG_CLK_SPRD		0x15
+
+#define SX9324_REG_AFE_CTRL0		0x20
+#define SX9324_REG_AFE_CTRL0_RINT_SHIFT		6
+#define SX9324_REG_AFE_CTRL0_RINT_MASK \
+	GENMASK(SX9324_REG_AFE_CTRL0_RINT_SHIFT + 1, \
+		SX9324_REG_AFE_CTRL0_RINT_SHIFT)
+#define SX9324_REG_AFE_CTRL0_RINT_LOWEST	0x00
+#define SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT	4
+#define SX9324_REG_AFE_CTRL0_CSIDLE_MASK \
+	GENMASK(SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT + 1, \
+		SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT)
+#define SX9324_REG_AFE_CTRL0_RINT_LOWEST	0x00
+#define SX9324_REG_AFE_CTRL1		0x21
+#define SX9324_REG_AFE_CTRL2		0x22
+#define SX9324_REG_AFE_CTRL3		0x23
+#define SX9324_REG_AFE_CTRL4		0x24
+#define SX9324_REG_AFE_CTRL4_FREQ_83_33HZ 0x40
+#define SX9324_REG_AFE_CTRL4_RESOLUTION_MASK GENMASK(2, 0)
+#define SX9324_REG_AFE_CTRL4_RES_100	0x04
+#define SX9324_REG_AFE_CTRL5		0x25
+#define SX9324_REG_AFE_CTRL6		0x26
+#define SX9324_REG_AFE_CTRL7		0x27
+#define SX9324_REG_AFE_PH0		0x28
+#define SX9324_REG_AFE_PH0_PIN_MASK(_pin) \
+	GENMASK(2 * (_pin) + 1, 2 * (_pin))
+
+#define SX9324_REG_AFE_PH1		0x29
+#define SX9324_REG_AFE_PH2		0x2a
+#define SX9324_REG_AFE_PH3		0x2b
+#define SX9324_REG_AFE_CTRL8		0x2c
+#define SX9324_REG_AFE_CTRL8_RESERVED	0x10
+#define SX9324_REG_AFE_CTRL8_RESFILTIN_4KOHM 0x02
+#define SX9324_REG_AFE_CTRL8_RESFILTIN_MASK GENMASK(3, 0)
+#define SX9324_REG_AFE_CTRL9		0x2d
+#define SX9324_REG_AFE_CTRL9_AGAIN_MASK			GENMASK(3, 0)
+#define SX9324_REG_AFE_CTRL9_AGAIN_1	0x08
+
+#define SX9324_REG_PROX_CTRL0		0x30
+#define SX9324_REG_PROX_CTRL0_GAIN_MASK	GENMASK(5, 3)
+#define SX9324_REG_PROX_CTRL0_GAIN_SHIFT	3
+#define SX9324_REG_PROX_CTRL0_GAIN_RSVD		0x0
+#define SX9324_REG_PROX_CTRL0_GAIN_1		0x1
+#define SX9324_REG_PROX_CTRL0_GAIN_8		0x4
+#define SX9324_REG_PROX_CTRL0_RAWFILT_MASK	GENMASK(2, 0)
+#define SX9324_REG_PROX_CTRL0_RAWFILT_1P50	0x01
+#define SX9324_REG_PROX_CTRL1		0x31
+#define SX9324_REG_PROX_CTRL2		0x32
+#define SX9324_REG_PROX_CTRL2_AVGNEG_THRESH_16K 0x20
+#define SX9324_REG_PROX_CTRL3		0x33
+#define SX9324_REG_PROX_CTRL3_AVGDEB_2SAMPLES	0x40
+#define SX9324_REG_PROX_CTRL3_AVGPOS_THRESH_16K 0x20
+#define SX9324_REG_PROX_CTRL4		0x34
+#define SX9324_REG_PROX_CTRL4_AVGNEGFILT_MASK	GENMASK(5, 3)
+#define SX9324_REG_PROX_CTRL4_AVGNEG_FILT_2 0x08
+#define SX9324_REG_PROX_CTRL4_AVGPOSFILT_MASK	GENMASK(2, 0)
+#define SX9324_REG_PROX_CTRL4_AVGPOS_FILT_256 0x04
+#define SX9324_REG_PROX_CTRL5		0x35
+#define SX9324_REG_PROX_CTRL5_HYST_MASK			GENMASK(5, 4)
+#define SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK	GENMASK(3, 2)
+#define SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK		GENMASK(1, 0)
+#define SX9324_REG_PROX_CTRL6		0x36
+#define SX9324_REG_PROX_CTRL6_PROXTHRESH_32	0x08
+#define SX9324_REG_PROX_CTRL7		0x37
+
+#define SX9324_REG_ADV_CTRL0		0x40
+#define SX9324_REG_ADV_CTRL1		0x41
+#define SX9324_REG_ADV_CTRL2		0x42
+#define SX9324_REG_ADV_CTRL3		0x43
+#define SX9324_REG_ADV_CTRL4		0x44
+#define SX9324_REG_ADV_CTRL5		0x45
+#define SX9324_REG_ADV_CTRL5_STARTUPSENS_MASK GENMASK(3, 2)
+#define SX9324_REG_ADV_CTRL5_STARTUP_SENSOR_1	0x04
+#define SX9324_REG_ADV_CTRL5_STARTUP_METHOD_1	0x01
+#define SX9324_REG_ADV_CTRL6		0x46
+#define SX9324_REG_ADV_CTRL7		0x47
+#define SX9324_REG_ADV_CTRL8		0x48
+#define SX9324_REG_ADV_CTRL9		0x49
+#define SX9324_REG_ADV_CTRL10		0x4a
+#define SX9324_REG_ADV_CTRL11		0x4b
+#define SX9324_REG_ADV_CTRL12		0x4c
+#define SX9324_REG_ADV_CTRL13		0x4d
+#define SX9324_REG_ADV_CTRL14		0x4e
+#define SX9324_REG_ADV_CTRL15		0x4f
+#define SX9324_REG_ADV_CTRL16		0x50
+#define SX9324_REG_ADV_CTRL17		0x51
+#define SX9324_REG_ADV_CTRL18		0x52
+#define SX9324_REG_ADV_CTRL19		0x53
+#define SX9324_REG_ADV_CTRL20		0x54
+#define SX9324_REG_ADV_CTRL19_HIGHT_FAILURE_THRESH_SATURATION 0xf0
+
+#define SX9324_REG_PHASE_SEL		0x60
+
+#define SX9324_REG_USEFUL_MSB		0x61
+#define SX9324_REG_USEFUL_LSB		0x62
+
+#define SX9324_REG_AVG_MSB		0x63
+#define SX9324_REG_AVG_LSB		0x64
+
+#define SX9324_REG_DIFF_MSB		0x65
+#define SX9324_REG_DIFF_LSB		0x66
+
+#define SX9324_REG_OFFSET_MSB		0x67
+#define SX9324_REG_OFFSET_LSB		0x68
+
+#define SX9324_REG_SAR_MSB		0x69
+#define SX9324_REG_SAR_LSB		0x6a
+
+#define SX9324_REG_RESET		0x9f
+/* Write this to REG_RESET to do a soft reset. */
+#define SX9324_SOFT_RESET		0xde
+
+#define SX9324_REG_WHOAMI		0xfa
+#define   SX9324_WHOAMI_VALUE		0x23
+
+#define SX9324_REG_REVISION		0xfe
+
+/* 4 channels, as defined in STAT0: PH0, PH1, PH2 and PH3. */
+#define SX9324_NUM_CHANNELS		4
+/* 3 CS pins: CS0, CS1, CS2. */
+#define SX9324_NUM_PINS			3
+
+static const char * const sx9324_cs_pin_usage[] = { "HZ", "MI", "DS", "GD" };
+
+static ssize_t sx9324_phase_configuration_show(struct iio_dev *indio_dev,
+					       uintptr_t private,
+					       const struct iio_chan_spec *chan,
+					       char *buf)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	unsigned int val;
+	int i, ret, pin_idx;
+	size_t len = 0;
+
+	ret = regmap_read(data->regmap, SX9324_REG_AFE_PH0 + chan->channel, &val);
+	if (ret < 0)
+		return ret;
+
+	for (i = 0; i < SX9324_NUM_PINS; i++) {
+		pin_idx = (val & SX9324_REG_AFE_PH0_PIN_MASK(i)) >> (2 * i);
+		len += sysfs_emit_at(buf, len, "%s,",
+				     sx9324_cs_pin_usage[pin_idx]);
+	}
+	buf[len - 1] = '\n';
+	return len;
+}
+
+static const struct iio_chan_spec_ext_info sx9324_channel_ext_info[] = {
+	{
+		.name = "setup",
+		.shared = IIO_SEPARATE,
+		.read = sx9324_phase_configuration_show,
+	},
+	{}
+};
+
+#define SX9324_CHANNEL(idx)					 \
+{								 \
+	.type = IIO_PROXIMITY,					 \
+	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		 \
+			      BIT(IIO_CHAN_INFO_HARDWAREGAIN),	 \
+	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ), \
+	.info_mask_separate_available =				 \
+		BIT(IIO_CHAN_INFO_HARDWAREGAIN),		 \
+	.info_mask_shared_by_all_available =			 \
+		BIT(IIO_CHAN_INFO_SAMP_FREQ),			 \
+	.indexed = 1,						 \
+	.channel = idx,						 \
+	.address = SX9324_REG_DIFF_MSB,				 \
+	.event_spec = sx_common_events,				 \
+	.num_event_specs = ARRAY_SIZE(sx_common_events),	 \
+	.scan_index = idx,					 \
+	.scan_type = {						 \
+		.sign = 's',					 \
+		.realbits = 12,					 \
+		.storagebits = 16,				 \
+		.endianness = IIO_BE,				 \
+	},							 \
+	.ext_info = sx9324_channel_ext_info,			 \
+}
+
+static const struct iio_chan_spec sx9324_channels[] = {
+	SX9324_CHANNEL(0),			/* Phase 0 */
+	SX9324_CHANNEL(1),			/* Phase 1 */
+	SX9324_CHANNEL(2),			/* Phase 2 */
+	SX9324_CHANNEL(3),			/* Phase 3 */
+	IIO_CHAN_SOFT_TIMESTAMP(4),
+};
+
+/*
+ * Each entry contains the integer part (val) and the fractional part, in micro
+ * seconds. It conforms to the IIO output IIO_VAL_INT_PLUS_MICRO.
+ */
+static const struct {
+	int val;
+	int val2;
+} sx9324_samp_freq_table[] = {
+	{ 1000, 0 },  /* 00000: Min (no idle time) */
+	{ 500, 0 },  /* 00001: 2 ms */
+	{ 250, 0 },  /* 00010: 4 ms */
+	{ 166, 666666 },  /* 00011: 6 ms */
+	{ 125, 0 },  /* 00100: 8 ms */
+	{ 100, 0 },  /* 00101: 10 ms */
+	{ 71, 428571 },  /* 00110: 14 ms */
+	{ 55, 555556 },  /* 00111: 18 ms */
+	{ 45, 454545 },  /* 01000: 22 ms */
+	{ 38, 461538 },  /* 01001: 26 ms */
+	{ 33, 333333 },  /* 01010: 30 ms */
+	{ 29, 411765 },  /* 01011: 34 ms */
+	{ 26, 315789 },  /* 01100: 38 ms */
+	{ 23, 809524 },  /* 01101: 42 ms */
+	{ 21, 739130 },  /* 01110: 46 ms */
+	{ 20, 0 },  /* 01111: 50 ms */
+	{ 17, 857143 },  /* 10000: 56 ms */
+	{ 16, 129032 },  /* 10001: 62 ms */
+	{ 14, 705882 },  /* 10010: 68 ms */
+	{ 13, 513514 },  /* 10011: 74 ms */
+	{ 12, 500000 },  /* 10100: 80 ms */
+	{ 11, 111111 },  /* 10101: 90 ms */
+	{ 10, 0 },  /* 10110: 100 ms (Typ.) */
+	{ 5, 0 },  /* 10111: 200 ms */
+	{ 3, 333333 },  /* 11000: 300 ms */
+	{ 2, 500000 },  /* 11001: 400 ms */
+	{ 1, 666667 },  /* 11010: 600 ms */
+	{ 1, 250000 },  /* 11011: 800 ms */
+	{ 1, 0 },  /* 11100: 1 s */
+	{ 0, 500000 },  /* 11101: 2 s */
+	{ 0, 333333 },  /* 11110: 3 s */
+	{ 0, 250000 },  /* 11111: 4 s */
+};
+
+static const unsigned int sx9324_scan_period_table[] = {
+	2,   15,  30,  45,   60,   90,	 120,  200,
+	400, 600, 800, 1000, 2000, 3000, 4000, 5000,
+};
+
+static const struct regmap_range sx9324_writable_reg_ranges[] = {
+	/*
+	 * To set COMPSTAT for compensation, even if datasheet says register is
+	 * RO.
+	 */
+	regmap_reg_range(SX9324_REG_STAT2, SX9324_REG_STAT2),
+	regmap_reg_range(SX9324_REG_IRQ_MSK, SX9324_REG_IRQ_CFG2),
+	regmap_reg_range(SX9324_REG_GNRL_CTRL0, SX9324_REG_GNRL_CTRL1),
+	/* Leave i2c and clock spreading as unavailable */
+	regmap_reg_range(SX9324_REG_AFE_CTRL0, SX9324_REG_AFE_CTRL9),
+	regmap_reg_range(SX9324_REG_PROX_CTRL0, SX9324_REG_PROX_CTRL7),
+	regmap_reg_range(SX9324_REG_ADV_CTRL0, SX9324_REG_ADV_CTRL20),
+	regmap_reg_range(SX9324_REG_PHASE_SEL, SX9324_REG_PHASE_SEL),
+	regmap_reg_range(SX9324_REG_OFFSET_MSB, SX9324_REG_OFFSET_LSB),
+	regmap_reg_range(SX9324_REG_RESET, SX9324_REG_RESET),
+};
+
+static const struct regmap_access_table sx9324_writeable_regs = {
+	.yes_ranges = sx9324_writable_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9324_writable_reg_ranges),
+};
+
+/*
+ * All allocated registers are readable, so we just list unallocated
+ * ones.
+ */
+static const struct regmap_range sx9324_non_readable_reg_ranges[] = {
+	regmap_reg_range(SX9324_REG_IRQ_CFG2 + 1, SX9324_REG_GNRL_CTRL0 - 1),
+	regmap_reg_range(SX9324_REG_GNRL_CTRL1 + 1, SX9324_REG_AFE_CTRL0 - 1),
+	regmap_reg_range(SX9324_REG_AFE_CTRL9 + 1, SX9324_REG_PROX_CTRL0 - 1),
+	regmap_reg_range(SX9324_REG_PROX_CTRL7 + 1, SX9324_REG_ADV_CTRL0 - 1),
+	regmap_reg_range(SX9324_REG_ADV_CTRL20 + 1, SX9324_REG_PHASE_SEL - 1),
+	regmap_reg_range(SX9324_REG_SAR_LSB + 1, SX9324_REG_RESET - 1),
+	regmap_reg_range(SX9324_REG_RESET + 1, SX9324_REG_WHOAMI - 1),
+	regmap_reg_range(SX9324_REG_WHOAMI + 1, SX9324_REG_REVISION - 1),
+};
+
+static const struct regmap_access_table sx9324_readable_regs = {
+	.no_ranges = sx9324_non_readable_reg_ranges,
+	.n_no_ranges = ARRAY_SIZE(sx9324_non_readable_reg_ranges),
+};
+
+static const struct regmap_range sx9324_volatile_reg_ranges[] = {
+	regmap_reg_range(SX9324_REG_IRQ_SRC, SX9324_REG_STAT3),
+	regmap_reg_range(SX9324_REG_USEFUL_MSB, SX9324_REG_DIFF_LSB),
+	regmap_reg_range(SX9324_REG_SAR_MSB, SX9324_REG_SAR_LSB),
+	regmap_reg_range(SX9324_REG_WHOAMI, SX9324_REG_WHOAMI),
+	regmap_reg_range(SX9324_REG_REVISION, SX9324_REG_REVISION),
+};
+
+static const struct regmap_access_table sx9324_volatile_regs = {
+	.yes_ranges = sx9324_volatile_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9324_volatile_reg_ranges),
+};
+
+static const struct regmap_config sx9324_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = SX9324_REG_REVISION,
+	.cache_type = REGCACHE_RBTREE,
+
+	.wr_table = &sx9324_writeable_regs,
+	.rd_table = &sx9324_readable_regs,
+	.volatile_table = &sx9324_volatile_regs,
+};
+
+static int sx9324_read_prox_data(struct sx_common_data *data,
+				 const struct iio_chan_spec *chan,
+				 __be16 *val)
+{
+	int ret;
+
+	ret = regmap_write(data->regmap, SX9324_REG_PHASE_SEL, chan->channel);
+	if (ret < 0)
+		return ret;
+
+	return regmap_bulk_read(data->regmap, chan->address, val, sizeof(*val));
+}
+
+/*
+ * If we have no interrupt support, we have to wait for a scan period
+ * after enabling a channel to get a result.
+ */
+static int sx9324_wait_for_sample(struct sx_common_data *data)
+{
+	int ret;
+	unsigned int val;
+
+	ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL0, &val);
+	if (ret < 0)
+		return ret;
+	val = FIELD_GET(SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, val);
+
+	msleep(sx9324_scan_period_table[val]);
+
+	return 0;
+}
+
+static int sx9324_read_gain(struct sx_common_data *data,
+			    const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int reg, regval;
+	int ret;
+
+	reg = SX9324_REG_PROX_CTRL0 + chan->channel / 2;
+	ret = regmap_read(data->regmap, reg, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9324_REG_PROX_CTRL0_GAIN_MASK, regval);
+	if (regval)
+		regval--;
+	else if (regval == SX9324_REG_PROX_CTRL0_GAIN_RSVD ||
+		 regval > SX9324_REG_PROX_CTRL0_GAIN_8)
+		return -EINVAL;
+
+	*val = 1 << regval;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9324_read_samp_freq(struct sx_common_data *data,
+				 int *val, int *val2)
+{
+	int ret;
+	unsigned int regval;
+
+	ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL0, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, regval);
+	*val = sx9324_samp_freq_table[regval].val;
+	*val2 = sx9324_samp_freq_table[regval].val2;
+
+	return IIO_VAL_INT_PLUS_MICRO;
+}
+
+static int sx9324_read_raw(struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan,
+			   int *val, int *val2, long mask)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = sx_common_read_proximity(data, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = sx9324_read_gain(data, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return sx9324_read_samp_freq(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const int sx9324_gain_vals[] = { 1, 2, 4, 8 };
+
+static int sx9324_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(sx9324_gain_vals);
+		*vals = sx9324_gain_vals;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(sx9324_samp_freq_table) * 2;
+		*vals = (int *)sx9324_samp_freq_table;
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9324_set_samp_freq(struct sx_common_data *data,
+				int val, int val2)
+{
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(sx9324_samp_freq_table); i++)
+		if (val == sx9324_samp_freq_table[i].val &&
+		    val2 == sx9324_samp_freq_table[i].val2)
+			break;
+
+	if (i == ARRAY_SIZE(sx9324_samp_freq_table))
+		return -EINVAL;
+
+	mutex_lock(&data->mutex);
+
+	ret = regmap_update_bits(data->regmap,
+				 SX9324_REG_GNRL_CTRL0,
+				 SX9324_REG_GNRL_CTRL0_SCANPERIOD_MASK, i);
+
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9324_read_thresh(struct sx_common_data *data,
+			      const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int regval;
+	unsigned int reg;
+	int ret;
+
+	/*
+	 * TODO(gwendal): Depending on the phase function
+	 * (proximity/table/body), retrieve the right threshold.
+	 * For now, return the proximity threshold.
+	 */
+	reg = SX9324_REG_PROX_CTRL6 + chan->channel / 2;
+	ret = regmap_read(data->regmap, reg, &regval);
+	if (ret)
+		return ret;
+
+	if (regval <= 1)
+		*val = regval;
+	else
+		*val = (regval * regval) / 2;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9324_read_hysteresis(struct sx_common_data *data,
+				  const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int regval, pthresh;
+	int ret;
+
+	ret = sx9324_read_thresh(data, chan, &pthresh);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_read(data->regmap, SX9324_REG_PROX_CTRL5, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9324_REG_PROX_CTRL5_HYST_MASK, regval);
+	if (!regval)
+		*val = 0;
+	else
+		*val = pthresh >> (5 - regval);
+
+	return IIO_VAL_INT;
+}
+
+static int sx9324_read_far_debounce(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9324_REG_PROX_CTRL5, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, regval);
+	if (regval)
+		*val = 1 << regval;
+	else
+		*val = 0;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9324_read_close_debounce(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9324_REG_PROX_CTRL5, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, regval);
+	if (regval)
+		*val = 1 << regval;
+	else
+		*val = 0;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9324_read_event_val(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir,
+				 enum iio_event_info info, int *val, int *val2)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		return sx9324_read_thresh(data, chan, val);
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return sx9324_read_far_debounce(data, val);
+		case IIO_EV_DIR_FALLING:
+			return sx9324_read_close_debounce(data, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_HYSTERESIS:
+		return sx9324_read_hysteresis(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9324_write_thresh(struct sx_common_data *data,
+			       const struct iio_chan_spec *chan, int _val)
+{
+	unsigned int reg, val = _val;
+	int ret;
+
+	reg = SX9324_REG_PROX_CTRL6 + chan->channel / 2;
+
+	if (val >= 1)
+		val = int_sqrt(2 * val);
+
+	if (val > 0xff)
+		return -EINVAL;
+
+	mutex_lock(&data->mutex);
+	ret = regmap_write(data->regmap, reg, val);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9324_write_hysteresis(struct sx_common_data *data,
+				   const struct iio_chan_spec *chan, int _val)
+{
+	unsigned int hyst, val = _val;
+	int ret, pthresh;
+
+	ret = sx9324_read_thresh(data, chan, &pthresh);
+	if (ret < 0)
+		return ret;
+
+	if (val == 0)
+		hyst = 0;
+	else if (val >= pthresh >> 2)
+		hyst = 3;
+	else if (val >= pthresh >> 3)
+		hyst = 2;
+	else if (val >= pthresh >> 4)
+		hyst = 1;
+	else
+		return -EINVAL;
+
+	hyst = FIELD_PREP(SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+				 SX9324_REG_PROX_CTRL5_HYST_MASK, hyst);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9324_write_far_debounce(struct sx_common_data *data, int _val)
+{
+	unsigned int regval, val = _val;
+	int ret;
+
+	if (val > 0)
+		val = ilog2(val);
+	if (!FIELD_FIT(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, val))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK, val);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+				 SX9324_REG_PROX_CTRL5_FAR_DEBOUNCE_MASK,
+				 regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9324_write_close_debounce(struct sx_common_data *data, int _val)
+{
+	unsigned int regval, val = _val;
+	int ret;
+
+	if (val > 0)
+		val = ilog2(val);
+	if (!FIELD_FIT(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, val))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK, val);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9324_REG_PROX_CTRL5,
+				 SX9324_REG_PROX_CTRL5_CLOSE_DEBOUNCE_MASK,
+				 regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9324_write_event_val(struct iio_dev *indio_dev,
+				  const struct iio_chan_spec *chan,
+				  enum iio_event_type type,
+				  enum iio_event_direction dir,
+				  enum iio_event_info info, int val, int val2)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		return sx9324_write_thresh(data, chan, val);
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return sx9324_write_far_debounce(data, val);
+		case IIO_EV_DIR_FALLING:
+			return sx9324_write_close_debounce(data, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_HYSTERESIS:
+		return sx9324_write_hysteresis(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9324_write_gain(struct sx_common_data *data,
+			     const struct iio_chan_spec *chan, int val)
+{
+	unsigned int gain, reg;
+	int ret;
+
+	reg = SX9324_REG_PROX_CTRL0 + chan->channel / 2;
+
+	gain = ilog2(val) + 1;
+	if (val <= 0 || gain > SX9324_REG_PROX_CTRL0_GAIN_8)
+		return -EINVAL;
+
+	gain = FIELD_PREP(SX9324_REG_PROX_CTRL0_GAIN_MASK, gain);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, reg,
+				 SX9324_REG_PROX_CTRL0_GAIN_MASK,
+				 gain);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9324_write_raw(struct iio_dev *indio_dev,
+			    const struct iio_chan_spec *chan, int val, int val2,
+			    long mask)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return sx9324_set_samp_freq(data, val, val2);
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		return sx9324_write_gain(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct sx_common_reg_default sx9324_default_regs[] = {
+	{ SX9324_REG_IRQ_MSK, 0x00 },
+	{ SX9324_REG_IRQ_CFG0, 0x00 },
+	{ SX9324_REG_IRQ_CFG1, SX9324_REG_IRQ_CFG1_FAILCOND },
+	{ SX9324_REG_IRQ_CFG2, 0x00 },
+	{ SX9324_REG_GNRL_CTRL0, SX9324_REG_GNRL_CTRL0_SCANPERIOD_100MS },
+	/*
+	 * The lower 4 bits should not be set as it enable sensors measurements.
+	 * Turning the detection on before the configuration values are set to
+	 * good values can cause the device to return erroneous readings.
+	 */
+	{ SX9324_REG_GNRL_CTRL1, SX9324_REG_GNRL_CTRL1_PAUSECTRL },
+
+	{ SX9324_REG_AFE_CTRL0, SX9324_REG_AFE_CTRL0_RINT_LOWEST },
+	{ SX9324_REG_AFE_CTRL3, 0x00 },
+	{ SX9324_REG_AFE_CTRL4, SX9324_REG_AFE_CTRL4_FREQ_83_33HZ |
+		SX9324_REG_AFE_CTRL4_RES_100 },
+	{ SX9324_REG_AFE_CTRL6, 0x00 },
+	{ SX9324_REG_AFE_CTRL7, SX9324_REG_AFE_CTRL4_FREQ_83_33HZ |
+		SX9324_REG_AFE_CTRL4_RES_100 },
+
+	/* TODO(gwendal): PHx use chip default or all grounded? */
+	{ SX9324_REG_AFE_PH0, 0x29 },
+	{ SX9324_REG_AFE_PH1, 0x26 },
+	{ SX9324_REG_AFE_PH2, 0x1a },
+	{ SX9324_REG_AFE_PH3, 0x16 },
+
+	{ SX9324_REG_AFE_CTRL8, SX9324_REG_AFE_CTRL8_RESERVED |
+		SX9324_REG_AFE_CTRL8_RESFILTIN_4KOHM },
+	{ SX9324_REG_AFE_CTRL9, SX9324_REG_AFE_CTRL9_AGAIN_1 },
+
+	{ SX9324_REG_PROX_CTRL0,
+		SX9324_REG_PROX_CTRL0_GAIN_1 << SX9324_REG_PROX_CTRL0_GAIN_SHIFT |
+		SX9324_REG_PROX_CTRL0_RAWFILT_1P50 },
+	{ SX9324_REG_PROX_CTRL1,
+		SX9324_REG_PROX_CTRL0_GAIN_1 << SX9324_REG_PROX_CTRL0_GAIN_SHIFT |
+		SX9324_REG_PROX_CTRL0_RAWFILT_1P50 },
+	{ SX9324_REG_PROX_CTRL2, SX9324_REG_PROX_CTRL2_AVGNEG_THRESH_16K },
+	{ SX9324_REG_PROX_CTRL3, SX9324_REG_PROX_CTRL3_AVGDEB_2SAMPLES |
+		SX9324_REG_PROX_CTRL3_AVGPOS_THRESH_16K },
+	{ SX9324_REG_PROX_CTRL4, SX9324_REG_PROX_CTRL4_AVGNEG_FILT_2 |
+		SX9324_REG_PROX_CTRL4_AVGPOS_FILT_256 },
+	{ SX9324_REG_PROX_CTRL5, 0x00 },
+	{ SX9324_REG_PROX_CTRL6, SX9324_REG_PROX_CTRL6_PROXTHRESH_32 },
+	{ SX9324_REG_PROX_CTRL7, SX9324_REG_PROX_CTRL6_PROXTHRESH_32 },
+	{ SX9324_REG_ADV_CTRL0, 0x00 },
+	{ SX9324_REG_ADV_CTRL1, 0x00 },
+	{ SX9324_REG_ADV_CTRL2, 0x00 },
+	{ SX9324_REG_ADV_CTRL3, 0x00 },
+	{ SX9324_REG_ADV_CTRL4, 0x00 },
+	{ SX9324_REG_ADV_CTRL5, SX9324_REG_ADV_CTRL5_STARTUP_SENSOR_1 |
+		SX9324_REG_ADV_CTRL5_STARTUP_METHOD_1 },
+	{ SX9324_REG_ADV_CTRL6, 0x00 },
+	{ SX9324_REG_ADV_CTRL7, 0x00 },
+	{ SX9324_REG_ADV_CTRL8, 0x00 },
+	{ SX9324_REG_ADV_CTRL9, 0x00 },
+	/* Body/Table threshold */
+	{ SX9324_REG_ADV_CTRL10, 0x00 },
+	{ SX9324_REG_ADV_CTRL11, 0x00 },
+	{ SX9324_REG_ADV_CTRL12, 0x00 },
+	/* TODO(gwendal): SAR currenly disabled */
+	{ SX9324_REG_ADV_CTRL13, 0x00 },
+	{ SX9324_REG_ADV_CTRL14, 0x00 },
+	{ SX9324_REG_ADV_CTRL15, 0x00 },
+	{ SX9324_REG_ADV_CTRL16, 0x00 },
+	{ SX9324_REG_ADV_CTRL17, 0x00 },
+	{ SX9324_REG_ADV_CTRL18, 0x00 },
+	{ SX9324_REG_ADV_CTRL19, SX9324_REG_ADV_CTRL19_HIGHT_FAILURE_THRESH_SATURATION },
+	{ SX9324_REG_ADV_CTRL20, SX9324_REG_ADV_CTRL19_HIGHT_FAILURE_THRESH_SATURATION },
+};
+
+/* Activate all channels and perform an initial compensation. */
+static int sx9324_init_compensation(struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	unsigned int val;
+	int ret;
+
+	/* run the compensation phase on all channels */
+	ret = regmap_update_bits(data->regmap, SX9324_REG_STAT2,
+				 SX9324_REG_STAT2_COMPSTAT_MASK,
+				 SX9324_REG_STAT2_COMPSTAT_MASK);
+	if (ret)
+		return ret;
+
+	return regmap_read_poll_timeout(data->regmap, SX9324_REG_STAT2, val,
+					!(val & SX9324_REG_STAT2_COMPSTAT_MASK),
+					20000, 2000000);
+}
+
+static const struct sx_common_reg_default *
+sx9324_get_default_reg(struct device *dev, int idx,
+		       struct sx_common_reg_default *reg_def)
+{
+	static const char * const sx9324_rints[] = { "lowest", "low", "high",
+		"highest" };
+	static const char * const sx9324_csidle[] = { "hi-z", "hi-z", "gnd",
+		"vdd" };
+#define SX9324_PIN_DEF "semtech,ph0-pin"
+#define SX9324_RESOLUTION_DEF "semtech,ph01-resolution"
+#define SX9324_PROXRAW_DEF "semtech,ph01-proxraw-strength"
+	unsigned int pin_defs[SX9324_NUM_PINS];
+	char prop[] = SX9324_PROXRAW_DEF;
+	u32 start = 0, raw = 0, pos = 0;
+	int ret, count, ph, pin;
+	const char *res;
+
+	memcpy(reg_def, &sx9324_default_regs[idx], sizeof(*reg_def));
+	switch (reg_def->reg) {
+	case SX9324_REG_AFE_PH0:
+	case SX9324_REG_AFE_PH1:
+	case SX9324_REG_AFE_PH2:
+	case SX9324_REG_AFE_PH3:
+		ph = reg_def->reg - SX9324_REG_AFE_PH0;
+		scnprintf(prop, ARRAY_SIZE(prop), "semtech,ph%d-pin", ph);
+
+		count = device_property_count_u32(dev, prop);
+		if (count != ARRAY_SIZE(pin_defs))
+			break;
+		ret = device_property_read_u32_array(dev, prop, pin_defs,
+						     ARRAY_SIZE(pin_defs));
+		if (ret)
+			break;
+
+		for (pin = 0; pin < SX9324_NUM_PINS; pin++)
+			raw |= (pin_defs[pin] << (2 * pin)) &
+			       SX9324_REG_AFE_PH0_PIN_MASK(pin);
+		reg_def->def = raw;
+		break;
+	case SX9324_REG_AFE_CTRL0:
+		ret = device_property_read_string(dev,
+				"semtech,cs-idle-sleep", &res);
+		if (!ret)
+			ret = match_string(sx9324_csidle, ARRAY_SIZE(sx9324_csidle), res);
+		if (ret >= 0) {
+			reg_def->def &= ~SX9324_REG_AFE_CTRL0_CSIDLE_MASK;
+			reg_def->def |= ret << SX9324_REG_AFE_CTRL0_CSIDLE_SHIFT;
+		}
+
+		ret = device_property_read_string(dev,
+				"semtech,int-comp-resistor", &res);
+		if (ret)
+			break;
+		ret = match_string(sx9324_rints, ARRAY_SIZE(sx9324_rints), res);
+		if (ret < 0)
+			break;
+		reg_def->def &= ~SX9324_REG_AFE_CTRL0_RINT_MASK;
+		reg_def->def |= ret << SX9324_REG_AFE_CTRL0_RINT_SHIFT;
+		break;
+	case SX9324_REG_AFE_CTRL4:
+	case SX9324_REG_AFE_CTRL7:
+		if (reg_def->reg == SX9324_REG_AFE_CTRL4)
+			strncpy(prop, "semtech,ph01-resolution",
+				ARRAY_SIZE(prop));
+		else
+			strncpy(prop, "semtech,ph23-resolution",
+				ARRAY_SIZE(prop));
+
+		ret = device_property_read_u32(dev, prop, &raw);
+		if (ret)
+			break;
+
+		raw = ilog2(raw) - 3;
+
+		reg_def->def &= ~SX9324_REG_AFE_CTRL4_RESOLUTION_MASK;
+		reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL4_RESOLUTION_MASK,
+					   raw);
+		break;
+	case SX9324_REG_AFE_CTRL8:
+		ret = device_property_read_u32(dev,
+				"semtech,input-precharge-resistor-ohms",
+				&raw);
+		if (ret)
+			break;
+
+		reg_def->def &= ~SX9324_REG_AFE_CTRL8_RESFILTIN_MASK;
+		reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL8_RESFILTIN_MASK,
+					   raw / 2000);
+		break;
+
+	case SX9324_REG_AFE_CTRL9:
+		ret = device_property_read_u32(dev,
+				"semtech,input-analog-gain", &raw);
+		if (ret)
+			break;
+		/*
+		 * The analog gain has the following setting:
+		 * +---------+----------------+----------------+
+		 * | dt(raw) | physical value | register value |
+		 * +---------+----------------+----------------+
+		 * |  0      |      x1.247    |      6         |
+		 * |  1      |      x1        |      8         |
+		 * |  2      |      x0.768    |     11         |
+		 * |  3      |      x0.552    |     15         |
+		 * +---------+----------------+----------------+
+		 */
+		reg_def->def &= ~SX9324_REG_AFE_CTRL9_AGAIN_MASK;
+		reg_def->def |= FIELD_PREP(SX9324_REG_AFE_CTRL9_AGAIN_MASK,
+					   6 + raw * (raw + 3) / 2);
+		break;
+
+	case SX9324_REG_ADV_CTRL5:
+		ret = device_property_read_u32(dev, "semtech,startup-sensor",
+					       &start);
+		if (ret)
+			break;
+
+		reg_def->def &= ~SX9324_REG_ADV_CTRL5_STARTUPSENS_MASK;
+		reg_def->def |= FIELD_PREP(SX9324_REG_ADV_CTRL5_STARTUPSENS_MASK,
+					   start);
+		break;
+	case SX9324_REG_PROX_CTRL4:
+		ret = device_property_read_u32(dev, "semtech,avg-pos-strength",
+					       &pos);
+		if (ret)
+			break;
+
+		/* Powers of 2, except for a gap between 16 and 64 */
+		raw = clamp(ilog2(pos), 3, 11) - (pos >= 32 ? 4 : 3);
+
+		reg_def->def &= ~SX9324_REG_PROX_CTRL4_AVGPOSFILT_MASK;
+		reg_def->def |= FIELD_PREP(SX9324_REG_PROX_CTRL4_AVGPOSFILT_MASK,
+					   raw);
+		break;
+	case SX9324_REG_PROX_CTRL0:
+	case SX9324_REG_PROX_CTRL1:
+		if (reg_def->reg == SX9324_REG_PROX_CTRL0)
+			strncpy(prop, "semtech,ph01-proxraw-strength",
+				ARRAY_SIZE(prop));
+		else
+			strncpy(prop, "semtech,ph23-proxraw-strength",
+				ARRAY_SIZE(prop));
+		ret = device_property_read_u32(dev, prop, &raw);
+		if (ret)
+			break;
+
+		reg_def->def &= ~SX9324_REG_PROX_CTRL0_RAWFILT_MASK;
+		reg_def->def |= FIELD_PREP(SX9324_REG_PROX_CTRL0_RAWFILT_MASK,
+					   raw);
+		break;
+	}
+	return reg_def;
+}
+
+static int sx9324_check_whoami(struct device *dev,
+			       struct iio_dev *indio_dev)
+{
+	/*
+	 * Only one sensor for this driver. Assuming the device tree
+	 * is correct, just set the sensor name.
+	 */
+	indio_dev->name = "sx9324";
+	return 0;
+}
+
+static const struct sx_common_chip_info sx9324_chip_info = {
+	.reg_stat = SX9324_REG_STAT0,
+	.reg_irq_msk = SX9324_REG_IRQ_MSK,
+	.reg_enable_chan = SX9324_REG_GNRL_CTRL1,
+	.reg_reset = SX9324_REG_RESET,
+
+	.mask_enable_chan = SX9324_REG_GNRL_CTRL1_PHEN_MASK,
+	.irq_msk_offset = 3,
+	.num_channels = SX9324_NUM_CHANNELS,
+	.num_default_regs = ARRAY_SIZE(sx9324_default_regs),
+
+	.ops = {
+		.read_prox_data = sx9324_read_prox_data,
+		.check_whoami = sx9324_check_whoami,
+		.init_compensation = sx9324_init_compensation,
+		.wait_for_sample = sx9324_wait_for_sample,
+		.get_default_reg = sx9324_get_default_reg,
+	},
+
+	.iio_channels = sx9324_channels,
+	.num_iio_channels = ARRAY_SIZE(sx9324_channels),
+	.iio_info =  {
+		.read_raw = sx9324_read_raw,
+		.read_avail = sx9324_read_avail,
+		.read_event_value = sx9324_read_event_val,
+		.write_event_value = sx9324_write_event_val,
+		.write_raw = sx9324_write_raw,
+		.read_event_config = sx_common_read_event_config,
+		.write_event_config = sx_common_write_event_config,
+	},
+};
+
+static int sx9324_probe(struct i2c_client *client)
+{
+	return sx_common_probe(client, &sx9324_chip_info, &sx9324_regmap_config);
+}
+
+static int sx9324_suspend(struct device *dev)
+{
+	struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
+	unsigned int regval;
+	int ret;
+
+	disable_irq_nosync(data->client->irq);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_read(data->regmap, SX9324_REG_GNRL_CTRL1, &regval);
+
+	data->suspend_ctrl =
+		FIELD_GET(SX9324_REG_GNRL_CTRL1_PHEN_MASK, regval);
+
+	if (ret < 0)
+		goto out;
+
+	/* Disable all phases, send the device to sleep. */
+	ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1, 0);
+
+out:
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+
+static int sx9324_resume(struct device *dev)
+{
+	struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	mutex_lock(&data->mutex);
+	ret = regmap_write(data->regmap, SX9324_REG_GNRL_CTRL1,
+			   data->suspend_ctrl | SX9324_REG_GNRL_CTRL1_PAUSECTRL);
+	mutex_unlock(&data->mutex);
+	if (ret)
+		return ret;
+
+	enable_irq(data->client->irq);
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(sx9324_pm_ops, sx9324_suspend, sx9324_resume);
+
+static const struct acpi_device_id sx9324_acpi_match[] = {
+	{ "STH9324", SX9324_WHOAMI_VALUE },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, sx9324_acpi_match);
+
+static const struct of_device_id sx9324_of_match[] = {
+	{ .compatible = "semtech,sx9324", (void *)SX9324_WHOAMI_VALUE },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sx9324_of_match);
+
+static const struct i2c_device_id sx9324_id[] = {
+	{ "sx9324", SX9324_WHOAMI_VALUE },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, sx9324_id);
+
+static struct i2c_driver sx9324_driver = {
+	.driver = {
+		.name	= "sx9324",
+		.acpi_match_table = sx9324_acpi_match,
+		.of_match_table = sx9324_of_match,
+		.pm = pm_sleep_ptr(&sx9324_pm_ops),
+
+		/*
+		 * Lots of i2c transfers in probe + over 200 ms waiting in
+		 * sx9324_init_compensation() mean a slow probe; prefer async
+		 * so we don't delay boot if we're builtin to the kernel.
+		 */
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
+	.probe_new	= sx9324_probe,
+	.id_table	= sx9324_id,
+};
+module_i2c_driver(sx9324_driver);
+
+MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>");
+MODULE_DESCRIPTION("Driver for Semtech SX9324 proximity sensor");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(SEMTECH_PROX);
diff --git a/drivers/iio/proximity/sx9360.c b/drivers/iio/proximity/sx9360.c
new file mode 100644
index 000000000000..7fa2213d23ba
--- /dev/null
+++ b/drivers/iio/proximity/sx9360.c
@@ -0,0 +1,906 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Driver for Semtech's SX9360 capacitive proximity/button solution.
+ * Based on SX9360 driver and copy of datasheet at:
+ * https://edit.wpgdadawant.com/uploads/news_file/program/2019/30184/tech_files/program_30184_suggest_other_file.pdf
+ */
+
+#include <linux/acpi.h>
+#include <linux/bits.h>
+#include <linux/bitfield.h>
+#include <linux/delay.h>
+#include <linux/i2c.h>
+#include <linux/interrupt.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/pm.h>
+#include <linux/property.h>
+#include <linux/regmap.h>
+
+#include <linux/iio/iio.h>
+
+#include "sx_common.h"
+
+/* Nominal Oscillator Frequency. */
+#define SX9360_FOSC_MHZ			4
+#define SX9360_FOSC_HZ			(SX9360_FOSC_MHZ * 1000000)
+
+/* Register definitions. */
+#define SX9360_REG_IRQ_SRC		SX_COMMON_REG_IRQ_SRC
+#define SX9360_REG_STAT		0x01
+#define SX9360_REG_STAT_COMPSTAT_MASK	GENMASK(2, 1)
+#define SX9360_REG_IRQ_MSK		0x02
+#define SX9360_CONVDONE_IRQ		BIT(0)
+#define SX9360_FAR_IRQ			BIT(2)
+#define SX9360_CLOSE_IRQ		BIT(3)
+#define SX9360_REG_IRQ_CFG		0x03
+
+#define SX9360_REG_GNRL_CTRL0		0x10
+#define SX9360_REG_GNRL_CTRL0_PHEN_MASK GENMASK(1, 0)
+#define SX9360_REG_GNRL_CTRL1		0x11
+#define SX9360_REG_GNRL_CTRL1_SCANPERIOD_MASK GENMASK(2, 0)
+#define SX9360_REG_GNRL_CTRL2		0x12
+#define SX9360_REG_GNRL_CTRL2_PERIOD_102MS	0x32
+#define SX9360_REG_GNRL_REG_2_PERIOD_MS(_r)	\
+	(((_r) * 8192) / (SX9360_FOSC_HZ / 1000))
+#define SX9360_REG_GNRL_FREQ_2_REG(_f)  (((_f) * 8192) / SX9360_FOSC_HZ)
+#define SX9360_REG_GNRL_REG_2_FREQ(_r)  (SX9360_FOSC_HZ / ((_r) * 8192))
+
+#define SX9360_REG_AFE_CTRL1		0x21
+#define SX9360_REG_AFE_CTRL1_RESFILTIN_MASK GENMASK(3, 0)
+#define SX9360_REG_AFE_CTRL1_RESFILTIN_0OHMS 0
+#define SX9360_REG_AFE_PARAM0_PHR	0x22
+#define SX9360_REG_AFE_PARAM1_PHR	0x23
+#define SX9360_REG_AFE_PARAM0_PHM	0x24
+#define SX9360_REG_AFE_PARAM0_RSVD		0x08
+#define SX9360_REG_AFE_PARAM0_RESOLUTION_MASK	GENMASK(2, 0)
+#define SX9360_REG_AFE_PARAM0_RESOLUTION_128	0x02
+#define SX9360_REG_AFE_PARAM1_PHM	0x25
+#define SX9360_REG_AFE_PARAM1_AGAIN_PHM_6PF	0x40
+#define SX9360_REG_AFE_PARAM1_FREQ_83_33HZ	0x06
+
+#define SX9360_REG_PROX_CTRL0_PHR	0x40
+#define SX9360_REG_PROX_CTRL0_PHM	0x41
+#define SX9360_REG_PROX_CTRL0_GAIN_MASK	GENMASK(5, 3)
+#define SX9360_REG_PROX_CTRL0_GAIN_1		0x80
+#define SX9360_REG_PROX_CTRL0_RAWFILT_MASK	GENMASK(2, 0)
+#define SX9360_REG_PROX_CTRL0_RAWFILT_1P50	0x01
+#define SX9360_REG_PROX_CTRL1		0x42
+#define SX9360_REG_PROX_CTRL1_AVGNEG_THRESH_MASK	GENMASK(5, 3)
+#define SX9360_REG_PROX_CTRL1_AVGNEG_THRESH_16K 0x20
+#define SX9360_REG_PROX_CTRL2		0x43
+#define SX9360_REG_PROX_CTRL2_AVGDEB_MASK	GENMASK(7, 6)
+#define SX9360_REG_PROX_CTRL2_AVGDEB_2SAMPLES	0x40
+#define SX9360_REG_PROX_CTRL2_AVGPOS_THRESH_16K	0x20
+#define SX9360_REG_PROX_CTRL3		0x44
+#define SX9360_REG_PROX_CTRL3_AVGNEG_FILT_MASK	GENMASK(5, 3)
+#define SX9360_REG_PROX_CTRL3_AVGNEG_FILT_2	0x08
+#define SX9360_REG_PROX_CTRL3_AVGPOS_FILT_MASK	GENMASK(2, 0)
+#define SX9360_REG_PROX_CTRL3_AVGPOS_FILT_256	0x04
+#define SX9360_REG_PROX_CTRL4		0x45
+#define SX9360_REG_PROX_CTRL4_HYST_MASK			GENMASK(5, 4)
+#define SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK	GENMASK(3, 2)
+#define SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK		GENMASK(1, 0)
+#define SX9360_REG_PROX_CTRL5		0x46
+#define SX9360_REG_PROX_CTRL5_PROXTHRESH_32	0x08
+
+#define SX9360_REG_REF_CORR0		0x60
+#define SX9360_REG_REF_CORR1		0x61
+
+#define SX9360_REG_USEFUL_PHR_MSB		0x90
+#define SX9360_REG_USEFUL_PHR_LSB		0x91
+
+#define SX9360_REG_OFFSET_PMR_MSB		0x92
+#define SX9360_REG_OFFSET_PMR_LSB		0x93
+
+#define SX9360_REG_USEFUL_PHM_MSB		0x94
+#define SX9360_REG_USEFUL_PHM_LSB		0x95
+
+#define SX9360_REG_AVG_PHM_MSB		0x96
+#define SX9360_REG_AVG_PHM_LSB		0x97
+
+#define SX9360_REG_DIFF_PHM_MSB		0x98
+#define SX9360_REG_DIFF_PHM_LSB		0x99
+
+#define SX9360_REG_OFFSET_PHM_MSB		0x9a
+#define SX9360_REG_OFFSET_PHM_LSB		0x9b
+
+#define SX9360_REG_USE_FILTER_MSB		0x9a
+#define SX9360_REG_USE_FILTER_LSB		0x9b
+
+#define SX9360_REG_RESET		0xcf
+/* Write this to REG_RESET to do a soft reset. */
+#define SX9360_SOFT_RESET		0xde
+
+#define SX9360_REG_WHOAMI		0xfa
+#define   SX9360_WHOAMI_VALUE				0x60
+
+#define SX9360_REG_REVISION		0xfe
+
+/* 2 channels, Phase Reference and Measurement. */
+#define SX9360_NUM_CHANNELS		2
+
+static const struct iio_chan_spec sx9360_channels[] = {
+	{
+		.type = IIO_PROXIMITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available =
+			BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+		.info_mask_shared_by_all_available =
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.indexed = 1,
+		.address = SX9360_REG_USEFUL_PHR_MSB,
+		.channel = 0,
+		.scan_index = 0,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 12,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+	},
+	{
+		.type = IIO_PROXIMITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+		.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available =
+			BIT(IIO_CHAN_INFO_HARDWAREGAIN),
+		.info_mask_shared_by_all_available =
+			BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.indexed = 1,
+		.address = SX9360_REG_USEFUL_PHM_MSB,
+		.event_spec = sx_common_events,
+		.num_event_specs = ARRAY_SIZE(sx_common_events),
+		.channel = 1,
+		.scan_index = 1,
+		.scan_type = {
+			.sign = 's',
+			.realbits = 12,
+			.storagebits = 16,
+			.endianness = IIO_BE,
+		},
+	},
+	IIO_CHAN_SOFT_TIMESTAMP(2),
+};
+
+/*
+ * Each entry contains the integer part (val) and the fractional part, in micro
+ * seconds. It conforms to the IIO output IIO_VAL_INT_PLUS_MICRO.
+ *
+ * The frequency control register holds the period, with a ~2ms increment.
+ * Therefore the smallest frequency is 4MHz / (2047 * 8192),
+ * The fastest is 4MHz / 8192.
+ * The interval is not linear, but given there is 2047 possible value,
+ * Returns the fake increment of (Max-Min)/2047
+ */
+static const struct {
+	int val;
+	int val2;
+} sx9360_samp_freq_interval[] = {
+	{ 0, 281250 },  /* 4MHz / (8192 * 2047) */
+	{ 0, 281250 },
+	{ 448, 281250 },  /* 4MHz / 8192 */
+};
+
+static const struct regmap_range sx9360_writable_reg_ranges[] = {
+	/*
+	 * To set COMPSTAT for compensation, even if datasheet says register is
+	 * RO.
+	 */
+	regmap_reg_range(SX9360_REG_STAT, SX9360_REG_IRQ_CFG),
+	regmap_reg_range(SX9360_REG_GNRL_CTRL0, SX9360_REG_GNRL_CTRL2),
+	regmap_reg_range(SX9360_REG_AFE_CTRL1, SX9360_REG_AFE_PARAM1_PHM),
+	regmap_reg_range(SX9360_REG_PROX_CTRL0_PHR, SX9360_REG_PROX_CTRL5),
+	regmap_reg_range(SX9360_REG_REF_CORR0, SX9360_REG_REF_CORR1),
+	regmap_reg_range(SX9360_REG_OFFSET_PMR_MSB, SX9360_REG_OFFSET_PMR_LSB),
+	regmap_reg_range(SX9360_REG_RESET, SX9360_REG_RESET),
+};
+
+static const struct regmap_access_table sx9360_writeable_regs = {
+	.yes_ranges = sx9360_writable_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9360_writable_reg_ranges),
+};
+
+/*
+ * All allocated registers are readable, so we just list unallocated
+ * ones.
+ */
+static const struct regmap_range sx9360_non_readable_reg_ranges[] = {
+	regmap_reg_range(SX9360_REG_IRQ_CFG + 1, SX9360_REG_GNRL_CTRL0 - 1),
+	regmap_reg_range(SX9360_REG_GNRL_CTRL2 + 1, SX9360_REG_AFE_CTRL1 - 1),
+	regmap_reg_range(SX9360_REG_AFE_PARAM1_PHM + 1,
+			 SX9360_REG_PROX_CTRL0_PHR - 1),
+	regmap_reg_range(SX9360_REG_PROX_CTRL5 + 1, SX9360_REG_REF_CORR0 - 1),
+	regmap_reg_range(SX9360_REG_REF_CORR1 + 1,
+			 SX9360_REG_USEFUL_PHR_MSB - 1),
+	regmap_reg_range(SX9360_REG_USE_FILTER_LSB + 1, SX9360_REG_RESET - 1),
+	regmap_reg_range(SX9360_REG_RESET + 1, SX9360_REG_WHOAMI - 1),
+	regmap_reg_range(SX9360_REG_WHOAMI + 1, SX9360_REG_REVISION - 1),
+};
+
+static const struct regmap_access_table sx9360_readable_regs = {
+	.no_ranges = sx9360_non_readable_reg_ranges,
+	.n_no_ranges = ARRAY_SIZE(sx9360_non_readable_reg_ranges),
+};
+
+static const struct regmap_range sx9360_volatile_reg_ranges[] = {
+	regmap_reg_range(SX9360_REG_IRQ_SRC, SX9360_REG_STAT),
+	regmap_reg_range(SX9360_REG_USEFUL_PHR_MSB, SX9360_REG_USE_FILTER_LSB),
+	regmap_reg_range(SX9360_REG_WHOAMI, SX9360_REG_WHOAMI),
+	regmap_reg_range(SX9360_REG_REVISION, SX9360_REG_REVISION),
+};
+
+static const struct regmap_access_table sx9360_volatile_regs = {
+	.yes_ranges = sx9360_volatile_reg_ranges,
+	.n_yes_ranges = ARRAY_SIZE(sx9360_volatile_reg_ranges),
+};
+
+static const struct regmap_config sx9360_regmap_config = {
+	.reg_bits = 8,
+	.val_bits = 8,
+
+	.max_register = SX9360_REG_REVISION,
+	.cache_type = REGCACHE_RBTREE,
+
+	.wr_table = &sx9360_writeable_regs,
+	.rd_table = &sx9360_readable_regs,
+	.volatile_table = &sx9360_volatile_regs,
+};
+
+static int sx9360_read_prox_data(struct sx_common_data *data,
+				 const struct iio_chan_spec *chan,
+				 __be16 *val)
+{
+	return regmap_bulk_read(data->regmap, chan->address, val, sizeof(*val));
+}
+
+/*
+ * If we have no interrupt support, we have to wait for a scan period
+ * after enabling a channel to get a result.
+ */
+static int sx9360_wait_for_sample(struct sx_common_data *data)
+{
+	int ret;
+	__be16 buf;
+
+	ret = regmap_bulk_read(data->regmap, SX9360_REG_GNRL_CTRL1,
+			       &buf, sizeof(buf));
+	if (ret < 0)
+		return ret;
+	msleep(SX9360_REG_GNRL_REG_2_PERIOD_MS(be16_to_cpu(buf)));
+
+	return 0;
+}
+
+static int sx9360_read_gain(struct sx_common_data *data,
+			    const struct iio_chan_spec *chan, int *val)
+{
+	unsigned int reg, regval;
+	int ret;
+
+	reg = SX9360_REG_PROX_CTRL0_PHR + chan->channel;
+	ret = regmap_read(data->regmap, reg, &regval);
+	if (ret)
+		return ret;
+
+	*val = 1 << FIELD_GET(SX9360_REG_PROX_CTRL0_GAIN_MASK, regval);
+
+	return IIO_VAL_INT;
+}
+
+static int sx9360_read_samp_freq(struct sx_common_data *data,
+				 int *val, int *val2)
+{
+	int ret, divisor;
+	__be16 buf;
+
+	ret = regmap_bulk_read(data->regmap, SX9360_REG_GNRL_CTRL1,
+			       &buf, sizeof(buf));
+	if (ret < 0)
+		return ret;
+	divisor = be16_to_cpu(buf);
+	if (divisor == 0) {
+		*val = 0;
+		return IIO_VAL_INT;
+	}
+
+	*val = SX9360_FOSC_HZ;
+	*val2 = divisor * 8192;
+
+	return IIO_VAL_FRACTIONAL;
+}
+
+static int sx9360_read_raw(struct iio_dev *indio_dev,
+			   const struct iio_chan_spec *chan,
+			   int *val, int *val2, long mask)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = sx_common_read_proximity(data, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		ret = iio_device_claim_direct_mode(indio_dev);
+		if (ret)
+			return ret;
+
+		ret = sx9360_read_gain(data, chan, val);
+		iio_device_release_direct_mode(indio_dev);
+		return ret;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return sx9360_read_samp_freq(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const char *sx9360_channel_labels[SX9360_NUM_CHANNELS] = {
+	"reference", "main",
+};
+
+static int sx9360_read_label(struct iio_dev *iio_dev, const struct iio_chan_spec *chan,
+			     char *label)
+{
+	return sysfs_emit(label, "%s\n", sx9360_channel_labels[chan->channel]);
+}
+
+static const int sx9360_gain_vals[] = { 1, 2, 4, 8 };
+
+static int sx9360_read_avail(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     const int **vals, int *type, int *length,
+			     long mask)
+{
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		*type = IIO_VAL_INT;
+		*length = ARRAY_SIZE(sx9360_gain_vals);
+		*vals = sx9360_gain_vals;
+		return IIO_AVAIL_LIST;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = ARRAY_SIZE(sx9360_samp_freq_interval) * 2;
+		*vals = (int *)sx9360_samp_freq_interval;
+		return IIO_AVAIL_RANGE;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9360_set_samp_freq(struct sx_common_data *data,
+				int val, int val2)
+{
+	int ret, reg;
+	__be16 buf;
+
+	reg = val * 8192 / SX9360_FOSC_HZ + val2 * 8192 / (SX9360_FOSC_MHZ);
+	buf = cpu_to_be16(reg);
+	mutex_lock(&data->mutex);
+
+	ret = regmap_bulk_write(data->regmap, SX9360_REG_GNRL_CTRL1, &buf,
+				sizeof(buf));
+
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9360_read_thresh(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9360_REG_PROX_CTRL5, &regval);
+	if (ret)
+		return ret;
+
+	if (regval <= 1)
+		*val = regval;
+	else
+		*val = (regval * regval) / 2;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9360_read_hysteresis(struct sx_common_data *data, int *val)
+{
+	unsigned int regval, pthresh;
+	int ret;
+
+	ret = sx9360_read_thresh(data, &pthresh);
+	if (ret < 0)
+		return ret;
+
+	ret = regmap_read(data->regmap, SX9360_REG_PROX_CTRL4, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9360_REG_PROX_CTRL4_HYST_MASK, regval);
+	if (!regval)
+		*val = 0;
+	else
+		*val = pthresh >> (5 - regval);
+
+	return IIO_VAL_INT;
+}
+
+static int sx9360_read_far_debounce(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9360_REG_PROX_CTRL4, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK, regval);
+	if (regval)
+		*val = 1 << regval;
+	else
+		*val = 0;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9360_read_close_debounce(struct sx_common_data *data, int *val)
+{
+	unsigned int regval;
+	int ret;
+
+	ret = regmap_read(data->regmap, SX9360_REG_PROX_CTRL4, &regval);
+	if (ret)
+		return ret;
+
+	regval = FIELD_GET(SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK, regval);
+	if (regval)
+		*val = 1 << regval;
+	else
+		*val = 0;
+
+	return IIO_VAL_INT;
+}
+
+static int sx9360_read_event_val(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir,
+				 enum iio_event_info info, int *val, int *val2)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		return sx9360_read_thresh(data, val);
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return sx9360_read_far_debounce(data, val);
+		case IIO_EV_DIR_FALLING:
+			return sx9360_read_close_debounce(data, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_HYSTERESIS:
+		return sx9360_read_hysteresis(data, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9360_write_thresh(struct sx_common_data *data, int _val)
+{
+	unsigned int val = _val;
+	int ret;
+
+	if (val >= 1)
+		val = int_sqrt(2 * val);
+
+	if (val > 0xff)
+		return -EINVAL;
+
+	mutex_lock(&data->mutex);
+	ret = regmap_write(data->regmap, SX9360_REG_PROX_CTRL5, val);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9360_write_hysteresis(struct sx_common_data *data, int _val)
+{
+	unsigned int hyst, val = _val;
+	int ret, pthresh;
+
+	ret = sx9360_read_thresh(data, &pthresh);
+	if (ret < 0)
+		return ret;
+
+	if (val == 0)
+		hyst = 0;
+	else if (val >= pthresh >> 2)
+		hyst = 3;
+	else if (val >= pthresh >> 3)
+		hyst = 2;
+	else if (val >= pthresh >> 4)
+		hyst = 1;
+	else
+		return -EINVAL;
+
+	hyst = FIELD_PREP(SX9360_REG_PROX_CTRL4_HYST_MASK, hyst);
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
+				 SX9360_REG_PROX_CTRL4_HYST_MASK, hyst);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9360_write_far_debounce(struct sx_common_data *data, int _val)
+{
+	unsigned int regval, val = _val;
+	int ret;
+
+	if (val > 0)
+		val = ilog2(val);
+	if (!FIELD_FIT(SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK, val))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK, val);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
+				 SX9360_REG_PROX_CTRL4_FAR_DEBOUNCE_MASK,
+				 regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9360_write_close_debounce(struct sx_common_data *data, int _val)
+{
+	unsigned int regval, val = _val;
+	int ret;
+
+	if (val > 0)
+		val = ilog2(val);
+	if (!FIELD_FIT(SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK, val))
+		return -EINVAL;
+
+	regval = FIELD_PREP(SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK, val);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9360_REG_PROX_CTRL4,
+				 SX9360_REG_PROX_CTRL4_CLOSE_DEBOUNCE_MASK,
+				 regval);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9360_write_event_val(struct iio_dev *indio_dev,
+				  const struct iio_chan_spec *chan,
+				  enum iio_event_type type,
+				  enum iio_event_direction dir,
+				  enum iio_event_info info, int val, int val2)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (chan->type != IIO_PROXIMITY)
+		return -EINVAL;
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		return sx9360_write_thresh(data, val);
+	case IIO_EV_INFO_PERIOD:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			return sx9360_write_far_debounce(data, val);
+		case IIO_EV_DIR_FALLING:
+			return sx9360_write_close_debounce(data, val);
+		default:
+			return -EINVAL;
+		}
+	case IIO_EV_INFO_HYSTERESIS:
+		return sx9360_write_hysteresis(data, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int sx9360_write_gain(struct sx_common_data *data,
+			     const struct iio_chan_spec *chan, int val)
+{
+	unsigned int gain, reg;
+	int ret;
+
+	gain = ilog2(val);
+	reg = SX9360_REG_PROX_CTRL0_PHR + chan->channel;
+	gain = FIELD_PREP(SX9360_REG_PROX_CTRL0_GAIN_MASK, gain);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, reg,
+				 SX9360_REG_PROX_CTRL0_GAIN_MASK,
+				 gain);
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static int sx9360_write_raw(struct iio_dev *indio_dev,
+			    const struct iio_chan_spec *chan, int val, int val2,
+			    long mask)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return sx9360_set_samp_freq(data, val, val2);
+	case IIO_CHAN_INFO_HARDWAREGAIN:
+		return sx9360_write_gain(data, chan, val);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct sx_common_reg_default sx9360_default_regs[] = {
+	{ SX9360_REG_IRQ_MSK, 0x00 },
+	{ SX9360_REG_IRQ_CFG, 0x00 },
+	/*
+	 * The lower 2 bits should not be set as it enable sensors measurements.
+	 * Turning the detection on before the configuration values are set to
+	 * good values can cause the device to return erroneous readings.
+	 */
+	{ SX9360_REG_GNRL_CTRL0, 0x00 },
+	{ SX9360_REG_GNRL_CTRL1, 0x00 },
+	{ SX9360_REG_GNRL_CTRL2, SX9360_REG_GNRL_CTRL2_PERIOD_102MS },
+
+	{ SX9360_REG_AFE_CTRL1, SX9360_REG_AFE_CTRL1_RESFILTIN_0OHMS },
+	{ SX9360_REG_AFE_PARAM0_PHR, SX9360_REG_AFE_PARAM0_RSVD |
+		SX9360_REG_AFE_PARAM0_RESOLUTION_128 },
+	{ SX9360_REG_AFE_PARAM1_PHR, SX9360_REG_AFE_PARAM1_AGAIN_PHM_6PF |
+		SX9360_REG_AFE_PARAM1_FREQ_83_33HZ },
+	{ SX9360_REG_AFE_PARAM0_PHM, SX9360_REG_AFE_PARAM0_RSVD |
+		SX9360_REG_AFE_PARAM0_RESOLUTION_128 },
+	{ SX9360_REG_AFE_PARAM1_PHM, SX9360_REG_AFE_PARAM1_AGAIN_PHM_6PF |
+		SX9360_REG_AFE_PARAM1_FREQ_83_33HZ },
+
+	{ SX9360_REG_PROX_CTRL0_PHR, SX9360_REG_PROX_CTRL0_GAIN_1 |
+		SX9360_REG_PROX_CTRL0_RAWFILT_1P50 },
+	{ SX9360_REG_PROX_CTRL0_PHM, SX9360_REG_PROX_CTRL0_GAIN_1 |
+		SX9360_REG_PROX_CTRL0_RAWFILT_1P50 },
+	{ SX9360_REG_PROX_CTRL1, SX9360_REG_PROX_CTRL1_AVGNEG_THRESH_16K },
+	{ SX9360_REG_PROX_CTRL2, SX9360_REG_PROX_CTRL2_AVGDEB_2SAMPLES |
+		SX9360_REG_PROX_CTRL2_AVGPOS_THRESH_16K },
+	{ SX9360_REG_PROX_CTRL3, SX9360_REG_PROX_CTRL3_AVGNEG_FILT_2 |
+		SX9360_REG_PROX_CTRL3_AVGPOS_FILT_256 },
+	{ SX9360_REG_PROX_CTRL4, 0x00 },
+	{ SX9360_REG_PROX_CTRL5, SX9360_REG_PROX_CTRL5_PROXTHRESH_32 },
+};
+
+/* Activate all channels and perform an initial compensation. */
+static int sx9360_init_compensation(struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	unsigned int val;
+	int ret;
+
+	/* run the compensation phase on all channels */
+	ret = regmap_update_bits(data->regmap, SX9360_REG_STAT,
+				 SX9360_REG_STAT_COMPSTAT_MASK,
+				 SX9360_REG_STAT_COMPSTAT_MASK);
+	if (ret)
+		return ret;
+
+	return regmap_read_poll_timeout(data->regmap, SX9360_REG_STAT, val,
+				       !(val & SX9360_REG_STAT_COMPSTAT_MASK),
+				       20000, 2000000);
+}
+
+static const struct sx_common_reg_default *
+sx9360_get_default_reg(struct device *dev, int idx,
+		       struct sx_common_reg_default *reg_def)
+{
+	u32 raw = 0, pos = 0;
+	int ret;
+
+	memcpy(reg_def, &sx9360_default_regs[idx], sizeof(*reg_def));
+	switch (reg_def->reg) {
+	case SX9360_REG_AFE_CTRL1:
+		ret = device_property_read_u32(dev,
+				"semtech,input-precharge-resistor-ohms",
+				&raw);
+		if (ret)
+			break;
+
+		reg_def->def &= ~SX9360_REG_AFE_CTRL1_RESFILTIN_MASK;
+		reg_def->def |= FIELD_PREP(SX9360_REG_AFE_CTRL1_RESFILTIN_MASK,
+					   raw / 2000);
+		break;
+	case SX9360_REG_AFE_PARAM0_PHR:
+	case SX9360_REG_AFE_PARAM0_PHM:
+		ret = device_property_read_u32(dev, "semtech,resolution", &raw);
+		if (ret)
+			break;
+
+		raw = ilog2(raw) - 3;
+
+		reg_def->def &= ~SX9360_REG_AFE_PARAM0_RESOLUTION_MASK;
+		reg_def->def |= FIELD_PREP(SX9360_REG_AFE_PARAM0_RESOLUTION_MASK, raw);
+		break;
+	case SX9360_REG_PROX_CTRL0_PHR:
+	case SX9360_REG_PROX_CTRL0_PHM:
+		ret = device_property_read_u32(dev, "semtech,proxraw-strength", &raw);
+		if (ret)
+			break;
+
+		reg_def->def &= ~SX9360_REG_PROX_CTRL0_RAWFILT_MASK;
+		reg_def->def |= FIELD_PREP(SX9360_REG_PROX_CTRL0_RAWFILT_MASK, raw);
+		break;
+	case SX9360_REG_PROX_CTRL3:
+		ret = device_property_read_u32(dev, "semtech,avg-pos-strength",
+					       &pos);
+		if (ret)
+			break;
+
+		/* Powers of 2, except for a gap between 16 and 64 */
+		raw = clamp(ilog2(pos), 3, 11) - (pos >= 32 ? 4 : 3);
+		reg_def->def &= ~SX9360_REG_PROX_CTRL3_AVGPOS_FILT_MASK;
+		reg_def->def |= FIELD_PREP(SX9360_REG_PROX_CTRL3_AVGPOS_FILT_MASK, raw);
+		break;
+	}
+
+	return reg_def;
+}
+
+static int sx9360_check_whoami(struct device *dev, struct iio_dev *indio_dev)
+{
+	/*
+	 * Only one sensor for this driver. Assuming the device tree
+	 * is correct, just set the sensor name.
+	 */
+	indio_dev->name = "sx9360";
+	return 0;
+}
+
+static const struct sx_common_chip_info sx9360_chip_info = {
+	.reg_stat = SX9360_REG_STAT,
+	.reg_irq_msk = SX9360_REG_IRQ_MSK,
+	.reg_enable_chan = SX9360_REG_GNRL_CTRL0,
+	.reg_reset = SX9360_REG_RESET,
+
+	.mask_enable_chan = SX9360_REG_GNRL_CTRL0_PHEN_MASK,
+	.stat_offset = 2,
+	.num_channels = SX9360_NUM_CHANNELS,
+	.num_default_regs = ARRAY_SIZE(sx9360_default_regs),
+
+	.ops = {
+		.read_prox_data = sx9360_read_prox_data,
+		.check_whoami = sx9360_check_whoami,
+		.init_compensation = sx9360_init_compensation,
+		.wait_for_sample = sx9360_wait_for_sample,
+		.get_default_reg = sx9360_get_default_reg,
+	},
+
+	.iio_channels = sx9360_channels,
+	.num_iio_channels = ARRAY_SIZE(sx9360_channels),
+	.iio_info =  {
+		.read_raw = sx9360_read_raw,
+		.read_avail = sx9360_read_avail,
+		.read_label = sx9360_read_label,
+		.read_event_value = sx9360_read_event_val,
+		.write_event_value = sx9360_write_event_val,
+		.write_raw = sx9360_write_raw,
+		.read_event_config = sx_common_read_event_config,
+		.write_event_config = sx_common_write_event_config,
+	},
+};
+
+static int sx9360_probe(struct i2c_client *client)
+{
+	return sx_common_probe(client, &sx9360_chip_info, &sx9360_regmap_config);
+}
+
+static int sx9360_suspend(struct device *dev)
+{
+	struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
+	unsigned int regval;
+	int ret;
+
+	disable_irq_nosync(data->client->irq);
+
+	mutex_lock(&data->mutex);
+	ret = regmap_read(data->regmap, SX9360_REG_GNRL_CTRL0, &regval);
+
+	data->suspend_ctrl =
+		FIELD_GET(SX9360_REG_GNRL_CTRL0_PHEN_MASK, regval);
+
+	if (ret < 0)
+		goto out;
+
+	/* Disable all phases, send the device to sleep. */
+	ret = regmap_write(data->regmap, SX9360_REG_GNRL_CTRL0, 0);
+
+out:
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+
+static int sx9360_resume(struct device *dev)
+{
+	struct sx_common_data *data = iio_priv(dev_get_drvdata(dev));
+	int ret;
+
+	mutex_lock(&data->mutex);
+	ret = regmap_update_bits(data->regmap, SX9360_REG_GNRL_CTRL0,
+				 SX9360_REG_GNRL_CTRL0_PHEN_MASK,
+				 data->suspend_ctrl);
+	mutex_unlock(&data->mutex);
+	if (ret)
+		return ret;
+
+	enable_irq(data->client->irq);
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(sx9360_pm_ops, sx9360_suspend, sx9360_resume);
+
+static const struct acpi_device_id sx9360_acpi_match[] = {
+	{ "STH9360", SX9360_WHOAMI_VALUE },
+	{ }
+};
+MODULE_DEVICE_TABLE(acpi, sx9360_acpi_match);
+
+static const struct of_device_id sx9360_of_match[] = {
+	{ .compatible = "semtech,sx9360", (void *)SX9360_WHOAMI_VALUE },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, sx9360_of_match);
+
+static const struct i2c_device_id sx9360_id[] = {
+	{"sx9360", SX9360_WHOAMI_VALUE },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, sx9360_id);
+
+static struct i2c_driver sx9360_driver = {
+	.driver = {
+		.name	= "sx9360",
+		.acpi_match_table = sx9360_acpi_match,
+		.of_match_table = sx9360_of_match,
+		.pm = pm_sleep_ptr(&sx9360_pm_ops),
+
+		/*
+		 * Lots of i2c transfers in probe + over 200 ms waiting in
+		 * sx9360_init_compensation() mean a slow probe; prefer async
+		 * so we don't delay boot if we're builtin to the kernel.
+		 */
+		.probe_type = PROBE_PREFER_ASYNCHRONOUS,
+	},
+	.probe_new	= sx9360_probe,
+	.id_table	= sx9360_id,
+};
+module_i2c_driver(sx9360_driver);
+
+MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>");
+MODULE_DESCRIPTION("Driver for Semtech SX9360 proximity sensor");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(SEMTECH_PROX);
diff --git a/drivers/iio/proximity/sx9500.c b/drivers/iio/proximity/sx9500.c
index 287d288e40c2..d4670864ddc7 100644
--- a/drivers/iio/proximity/sx9500.c
+++ b/drivers/iio/proximity/sx9500.c
@@ -680,10 +680,6 @@ static int sx9500_buffer_postenable(struct iio_dev *indio_dev)
 	struct sx9500_data *data = iio_priv(indio_dev);
 	int ret = 0, i;
 
-	ret = iio_triggered_buffer_postenable(indio_dev);
-	if (ret)
-		return ret;
-
 	mutex_lock(&data->mutex);
 
 	for (i = 0; i < SX9500_NUM_CHANNELS; i++)
@@ -700,9 +696,6 @@ static int sx9500_buffer_postenable(struct iio_dev *indio_dev)
 
 	mutex_unlock(&data->mutex);
 
-	if (ret)
-		iio_triggered_buffer_predisable(indio_dev);
-
 	return ret;
 }
 
@@ -727,8 +720,6 @@ static int sx9500_buffer_predisable(struct iio_dev *indio_dev)
 
 	mutex_unlock(&data->mutex);
 
-	iio_triggered_buffer_predisable(indio_dev);
-
 	return ret;
 }
 
@@ -767,7 +758,7 @@ static const struct sx9500_reg_default sx9500_default_regs[] = {
 		.reg = SX9500_REG_PROX_CTRL5,
 		/*
 		 * Debouncer off, lowest average negative filter,
-		 * highest average postive filter.
+		 * highest average positive filter.
 		 */
 		.def = 0x0f,
 	},
@@ -931,7 +922,6 @@ static int sx9500_probe(struct i2c_client *client,
 	if (IS_ERR(data->regmap))
 		return PTR_ERR(data->regmap);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = SX9500_DRIVER_NAME;
 	indio_dev->channels = sx9500_channels;
 	indio_dev->num_channels = ARRAY_SIZE(sx9500_channels);
@@ -956,11 +946,10 @@ static int sx9500_probe(struct i2c_client *client,
 			return ret;
 
 		data->trig = devm_iio_trigger_alloc(&client->dev,
-				"%s-dev%d", indio_dev->name, indio_dev->id);
+				"%s-dev%d", indio_dev->name, iio_device_id(indio_dev));
 		if (!data->trig)
 			return -ENOMEM;
 
-		data->trig->dev.parent = &client->dev;
 		data->trig->ops = &sx9500_trigger_ops;
 		iio_trigger_set_drvdata(data->trig, indio_dev);
 
@@ -990,7 +979,7 @@ out_trigger_unregister:
 	return ret;
 }
 
-static int sx9500_remove(struct i2c_client *client)
+static void sx9500_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct sx9500_data *data = iio_priv(indio_dev);
@@ -1000,11 +989,8 @@ static int sx9500_remove(struct i2c_client *client)
 	if (client->irq > 0)
 		iio_trigger_unregister(data->trig);
 	kfree(data->buffer);
-
-	return 0;
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int sx9500_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -1041,11 +1027,8 @@ static int sx9500_resume(struct device *dev)
 
 	return ret;
 }
-#endif /* CONFIG_PM_SLEEP */
 
-static const struct dev_pm_ops sx9500_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(sx9500_suspend, sx9500_resume)
-};
+static DEFINE_SIMPLE_DEV_PM_OPS(sx9500_pm_ops, sx9500_suspend, sx9500_resume);
 
 static const struct acpi_device_id sx9500_acpi_match[] = {
 	{"SSX9500", 0},
@@ -1071,7 +1054,7 @@ static struct i2c_driver sx9500_driver = {
 		.name	= SX9500_DRIVER_NAME,
 		.acpi_match_table = ACPI_PTR(sx9500_acpi_match),
 		.of_match_table = of_match_ptr(sx9500_of_match),
-		.pm = &sx9500_pm_ops,
+		.pm = pm_sleep_ptr(&sx9500_pm_ops),
 	},
 	.probe		= sx9500_probe,
 	.remove		= sx9500_remove,
diff --git a/drivers/iio/proximity/sx_common.c b/drivers/iio/proximity/sx_common.c
new file mode 100644
index 000000000000..d70a6b4f0bf8
--- /dev/null
+++ b/drivers/iio/proximity/sx_common.c
@@ -0,0 +1,569 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Common part of most Semtech SAR sensor.
+ */
+
+#include <linux/bitops.h>
+#include <linux/byteorder/generic.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/err.h>
+#include <linux/export.h>
+#include <linux/interrupt.h>
+#include <linux/irqreturn.h>
+#include <linux/i2c.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
+#include <vdso/bits.h>
+
+#include <linux/iio/buffer.h>
+#include <linux/iio/events.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/triggered_buffer.h>
+#include <linux/iio/trigger_consumer.h>
+
+#include "sx_common.h"
+
+/* All Semtech SAR sensors have IRQ bit in the same order. */
+#define   SX_COMMON_CONVDONE_IRQ			BIT(0)
+#define   SX_COMMON_FAR_IRQ				BIT(2)
+#define   SX_COMMON_CLOSE_IRQ				BIT(3)
+
+const struct iio_event_spec sx_common_events[3] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_shared_by_all = BIT(IIO_EV_INFO_PERIOD),
+	},
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE) |
+				 BIT(IIO_EV_INFO_HYSTERESIS) |
+				 BIT(IIO_EV_INFO_VALUE),
+	},
+};
+EXPORT_SYMBOL_NS_GPL(sx_common_events, SEMTECH_PROX);
+
+static irqreturn_t sx_common_irq_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	if (data->trigger_enabled)
+		iio_trigger_poll(data->trig);
+
+	/*
+	 * Even if no event is enabled, we need to wake the thread to clear the
+	 * interrupt state by reading SX_COMMON_REG_IRQ_SRC.
+	 * It is not possible to do that here because regmap_read takes a mutex.
+	 */
+	return IRQ_WAKE_THREAD;
+}
+
+static void sx_common_push_events(struct iio_dev *indio_dev)
+{
+	int ret;
+	unsigned int val, chan;
+	struct sx_common_data *data = iio_priv(indio_dev);
+	s64 timestamp = iio_get_time_ns(indio_dev);
+	unsigned long prox_changed;
+
+	/* Read proximity state on all channels */
+	ret = regmap_read(data->regmap, data->chip_info->reg_stat, &val);
+	if (ret) {
+		dev_err(&data->client->dev, "i2c transfer error in irq\n");
+		return;
+	}
+
+	val >>= data->chip_info->stat_offset;
+
+	/*
+	 * Only iterate over channels with changes on proximity status that have
+	 * events enabled.
+	 */
+	prox_changed = (data->chan_prox_stat ^ val) & data->chan_event;
+
+	for_each_set_bit(chan, &prox_changed, data->chip_info->num_channels) {
+		int dir;
+		u64 ev;
+
+		dir = (val & BIT(chan)) ? IIO_EV_DIR_FALLING : IIO_EV_DIR_RISING;
+		ev = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, chan,
+					  IIO_EV_TYPE_THRESH, dir);
+
+		iio_push_event(indio_dev, ev, timestamp);
+	}
+	data->chan_prox_stat = val;
+}
+
+static int sx_common_enable_irq(struct sx_common_data *data, unsigned int irq)
+{
+	if (!data->client->irq)
+		return 0;
+	return regmap_update_bits(data->regmap, data->chip_info->reg_irq_msk,
+				  irq << data->chip_info->irq_msk_offset,
+				  irq << data->chip_info->irq_msk_offset);
+}
+
+static int sx_common_disable_irq(struct sx_common_data *data, unsigned int irq)
+{
+	if (!data->client->irq)
+		return 0;
+	return regmap_update_bits(data->regmap, data->chip_info->reg_irq_msk,
+				  irq << data->chip_info->irq_msk_offset, 0);
+}
+
+static int sx_common_update_chan_en(struct sx_common_data *data,
+				    unsigned long chan_read,
+				    unsigned long chan_event)
+{
+	int ret;
+	unsigned long channels = chan_read | chan_event;
+
+	if ((data->chan_read | data->chan_event) != channels) {
+		ret = regmap_update_bits(data->regmap,
+					 data->chip_info->reg_enable_chan,
+					 data->chip_info->mask_enable_chan,
+					 channels);
+		if (ret)
+			return ret;
+	}
+	data->chan_read = chan_read;
+	data->chan_event = chan_event;
+	return 0;
+}
+
+static int sx_common_get_read_channel(struct sx_common_data *data, int channel)
+{
+	return sx_common_update_chan_en(data, data->chan_read | BIT(channel),
+				     data->chan_event);
+}
+
+static int sx_common_put_read_channel(struct sx_common_data *data, int channel)
+{
+	return sx_common_update_chan_en(data, data->chan_read & ~BIT(channel),
+				     data->chan_event);
+}
+
+static int sx_common_get_event_channel(struct sx_common_data *data, int channel)
+{
+	return sx_common_update_chan_en(data, data->chan_read,
+				     data->chan_event | BIT(channel));
+}
+
+static int sx_common_put_event_channel(struct sx_common_data *data, int channel)
+{
+	return sx_common_update_chan_en(data, data->chan_read,
+				     data->chan_event & ~BIT(channel));
+}
+
+/**
+ * sx_common_read_proximity() - Read raw proximity value.
+ * @data:	Internal data
+ * @chan:	Channel to read
+ * @val:	pointer to return read value.
+ *
+ * Request a conversion, wait for the sensor to be ready and
+ * return the raw proximity value.
+ */
+int sx_common_read_proximity(struct sx_common_data *data,
+			     const struct iio_chan_spec *chan, int *val)
+{
+	int ret;
+	__be16 rawval;
+
+	mutex_lock(&data->mutex);
+
+	ret = sx_common_get_read_channel(data, chan->channel);
+	if (ret)
+		goto out;
+
+	ret = sx_common_enable_irq(data, SX_COMMON_CONVDONE_IRQ);
+	if (ret)
+		goto out_put_channel;
+
+	mutex_unlock(&data->mutex);
+
+	if (data->client->irq) {
+		ret = wait_for_completion_interruptible(&data->completion);
+		reinit_completion(&data->completion);
+	} else {
+		ret = data->chip_info->ops.wait_for_sample(data);
+	}
+
+	mutex_lock(&data->mutex);
+
+	if (ret)
+		goto out_disable_irq;
+
+	ret = data->chip_info->ops.read_prox_data(data, chan, &rawval);
+	if (ret)
+		goto out_disable_irq;
+
+	*val = sign_extend32(be16_to_cpu(rawval), chan->scan_type.realbits - 1);
+
+	ret = sx_common_disable_irq(data, SX_COMMON_CONVDONE_IRQ);
+	if (ret)
+		goto out_put_channel;
+
+	ret = sx_common_put_read_channel(data, chan->channel);
+	if (ret)
+		goto out;
+
+	mutex_unlock(&data->mutex);
+
+	return IIO_VAL_INT;
+
+out_disable_irq:
+	sx_common_disable_irq(data, SX_COMMON_CONVDONE_IRQ);
+out_put_channel:
+	sx_common_put_read_channel(data, chan->channel);
+out:
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+EXPORT_SYMBOL_NS_GPL(sx_common_read_proximity, SEMTECH_PROX);
+
+/**
+ * sx_common_read_event_config() - Configure event setting.
+ * @indio_dev:	iio device object
+ * @chan:	Channel to read
+ * @type:	Type of event (unused)
+ * @dir:	Direction of event (unused)
+ *
+ * return if the given channel is used for event gathering.
+ */
+int sx_common_read_event_config(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+
+	return !!(data->chan_event & BIT(chan->channel));
+}
+EXPORT_SYMBOL_NS_GPL(sx_common_read_event_config, SEMTECH_PROX);
+
+/**
+ * sx_common_write_event_config() - Configure event setting.
+ * @indio_dev:	iio device object
+ * @chan:	Channel to enable
+ * @type:	Type of event (unused)
+ * @dir:	Direction of event (unused)
+ * @state:	State of the event.
+ *
+ * Enable/Disable event on a given channel.
+ */
+int sx_common_write_event_config(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir, int state)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	unsigned int eventirq = SX_COMMON_FAR_IRQ | SX_COMMON_CLOSE_IRQ;
+	int ret;
+
+	/* If the state hasn't changed, there's nothing to do. */
+	if (!!(data->chan_event & BIT(chan->channel)) == state)
+		return 0;
+
+	mutex_lock(&data->mutex);
+	if (state) {
+		ret = sx_common_get_event_channel(data, chan->channel);
+		if (ret)
+			goto out_unlock;
+		if (!(data->chan_event & ~BIT(chan->channel))) {
+			ret = sx_common_enable_irq(data, eventirq);
+			if (ret)
+				sx_common_put_event_channel(data, chan->channel);
+		}
+	} else {
+		ret = sx_common_put_event_channel(data, chan->channel);
+		if (ret)
+			goto out_unlock;
+		if (!data->chan_event) {
+			ret = sx_common_disable_irq(data, eventirq);
+			if (ret)
+				sx_common_get_event_channel(data, chan->channel);
+		}
+	}
+
+out_unlock:
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+EXPORT_SYMBOL_NS_GPL(sx_common_write_event_config, SEMTECH_PROX);
+
+static int sx_common_set_trigger_state(struct iio_trigger *trig, bool state)
+{
+	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret = 0;
+
+	mutex_lock(&data->mutex);
+
+	if (state)
+		ret = sx_common_enable_irq(data, SX_COMMON_CONVDONE_IRQ);
+	else if (!data->chan_read)
+		ret = sx_common_disable_irq(data, SX_COMMON_CONVDONE_IRQ);
+	if (ret)
+		goto out;
+
+	data->trigger_enabled = state;
+
+out:
+	mutex_unlock(&data->mutex);
+
+	return ret;
+}
+
+static const struct iio_trigger_ops sx_common_trigger_ops = {
+	.set_trigger_state = sx_common_set_trigger_state,
+};
+
+static irqreturn_t sx_common_irq_thread_handler(int irq, void *private)
+{
+	struct iio_dev *indio_dev = private;
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret;
+	unsigned int val;
+
+	mutex_lock(&data->mutex);
+
+	ret = regmap_read(data->regmap, SX_COMMON_REG_IRQ_SRC, &val);
+	if (ret) {
+		dev_err(&data->client->dev, "i2c transfer error in irq\n");
+		goto out;
+	}
+
+	if (val & ((SX_COMMON_FAR_IRQ | SX_COMMON_CLOSE_IRQ) << data->chip_info->irq_msk_offset))
+		sx_common_push_events(indio_dev);
+
+	if (val & (SX_COMMON_CONVDONE_IRQ << data->chip_info->irq_msk_offset))
+		complete(&data->completion);
+
+out:
+	mutex_unlock(&data->mutex);
+
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t sx_common_trigger_handler(int irq, void *private)
+{
+	struct iio_poll_func *pf = private;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct sx_common_data *data = iio_priv(indio_dev);
+	__be16 val;
+	int bit, ret, i = 0;
+
+	mutex_lock(&data->mutex);
+
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength) {
+		ret = data->chip_info->ops.read_prox_data(data,
+						     &indio_dev->channels[bit],
+						     &val);
+		if (ret)
+			goto out;
+
+		data->buffer.channels[i++] = val;
+	}
+
+	iio_push_to_buffers_with_timestamp(indio_dev, &data->buffer,
+					   pf->timestamp);
+
+out:
+	mutex_unlock(&data->mutex);
+
+	iio_trigger_notify_done(indio_dev->trig);
+
+	return IRQ_HANDLED;
+}
+
+static int sx_common_buffer_preenable(struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	unsigned long channels = 0;
+	int bit, ret;
+
+	mutex_lock(&data->mutex);
+	for_each_set_bit(bit, indio_dev->active_scan_mask,
+			 indio_dev->masklength)
+		__set_bit(indio_dev->channels[bit].channel, &channels);
+
+	ret = sx_common_update_chan_en(data, channels, data->chan_event);
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+
+static int sx_common_buffer_postdisable(struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	int ret;
+
+	mutex_lock(&data->mutex);
+	ret = sx_common_update_chan_en(data, 0, data->chan_event);
+	mutex_unlock(&data->mutex);
+	return ret;
+}
+
+static const struct iio_buffer_setup_ops sx_common_buffer_setup_ops = {
+	.preenable = sx_common_buffer_preenable,
+	.postdisable = sx_common_buffer_postdisable,
+};
+
+static void sx_common_regulator_disable(void *_data)
+{
+	struct sx_common_data *data = _data;
+
+	regulator_bulk_disable(ARRAY_SIZE(data->supplies), data->supplies);
+}
+
+#define SX_COMMON_SOFT_RESET				0xde
+
+static int sx_common_init_device(struct device *dev, struct iio_dev *indio_dev)
+{
+	struct sx_common_data *data = iio_priv(indio_dev);
+	struct sx_common_reg_default tmp;
+	const struct sx_common_reg_default *initval;
+	int ret;
+	unsigned int i, val;
+
+	ret = regmap_write(data->regmap, data->chip_info->reg_reset,
+			   SX_COMMON_SOFT_RESET);
+	if (ret)
+		return ret;
+
+	usleep_range(1000, 2000); /* power-up time is ~1ms. */
+
+	/* Clear reset interrupt state by reading SX_COMMON_REG_IRQ_SRC. */
+	ret = regmap_read(data->regmap, SX_COMMON_REG_IRQ_SRC, &val);
+	if (ret)
+		return ret;
+
+	/* Program defaults from constant or BIOS. */
+	for (i = 0; i < data->chip_info->num_default_regs; i++) {
+		initval = data->chip_info->ops.get_default_reg(dev, i, &tmp);
+		ret = regmap_write(data->regmap, initval->reg, initval->def);
+		if (ret)
+			return ret;
+	}
+
+	return data->chip_info->ops.init_compensation(indio_dev);
+}
+
+/**
+ * sx_common_probe() - Common setup for Semtech SAR sensor
+ * @client:		I2C client object
+ * @chip_info:		Semtech sensor chip information.
+ * @regmap_config:	Sensor registers map configuration.
+ */
+int sx_common_probe(struct i2c_client *client,
+		    const struct sx_common_chip_info *chip_info,
+		    const struct regmap_config *regmap_config)
+{
+	struct device *dev = &client->dev;
+	struct iio_dev *indio_dev;
+	struct sx_common_data *data;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+
+	data->chip_info = chip_info;
+	data->client = client;
+	data->supplies[0].supply = "vdd";
+	data->supplies[1].supply = "svdd";
+	mutex_init(&data->mutex);
+	init_completion(&data->completion);
+
+	data->regmap = devm_regmap_init_i2c(client, regmap_config);
+	if (IS_ERR(data->regmap))
+		return dev_err_probe(dev, PTR_ERR(data->regmap),
+				     "Could init register map\n");
+
+	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(data->supplies),
+				      data->supplies);
+	if (ret)
+		return dev_err_probe(dev, ret, "Unable to get regulators\n");
+
+	ret = regulator_bulk_enable(ARRAY_SIZE(data->supplies), data->supplies);
+	if (ret)
+		return dev_err_probe(dev, ret, "Unable to enable regulators\n");
+
+	/* Must wait for Tpor time after initial power up */
+	usleep_range(1000, 1100);
+
+	ret = devm_add_action_or_reset(dev, sx_common_regulator_disable, data);
+	if (ret)
+		return dev_err_probe(dev, ret,
+				     "Unable to register regulators deleter\n");
+
+	ret = data->chip_info->ops.check_whoami(dev, indio_dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "error reading WHOAMI\n");
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	indio_dev->channels =  data->chip_info->iio_channels;
+	indio_dev->num_channels = data->chip_info->num_iio_channels;
+	indio_dev->info = &data->chip_info->iio_info;
+
+	i2c_set_clientdata(client, indio_dev);
+
+	ret = sx_common_init_device(dev, indio_dev);
+	if (ret)
+		return dev_err_probe(dev, ret, "Unable to initialize sensor\n");
+
+	if (client->irq) {
+		ret = devm_request_threaded_irq(dev, client->irq,
+						sx_common_irq_handler,
+						sx_common_irq_thread_handler,
+						IRQF_ONESHOT,
+						"sx_event", indio_dev);
+		if (ret)
+			return dev_err_probe(dev, ret, "No IRQ\n");
+
+		data->trig = devm_iio_trigger_alloc(dev, "%s-dev%d",
+						    indio_dev->name,
+						    iio_device_id(indio_dev));
+		if (!data->trig)
+			return -ENOMEM;
+
+		data->trig->ops = &sx_common_trigger_ops;
+		iio_trigger_set_drvdata(data->trig, indio_dev);
+
+		ret = devm_iio_trigger_register(dev, data->trig);
+		if (ret)
+			return ret;
+	}
+
+	ret = devm_iio_triggered_buffer_setup(dev, indio_dev,
+					      iio_pollfunc_store_time,
+					      sx_common_trigger_handler,
+					      &sx_common_buffer_setup_ops);
+	if (ret)
+		return ret;
+
+	return devm_iio_device_register(dev, indio_dev);
+}
+EXPORT_SYMBOL_NS_GPL(sx_common_probe, SEMTECH_PROX);
+
+MODULE_AUTHOR("Gwendal Grignou <gwendal@chromium.org>");
+MODULE_DESCRIPTION("Common functions and structures for Semtech sensor");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/proximity/sx_common.h b/drivers/iio/proximity/sx_common.h
new file mode 100644
index 000000000000..5d3edeb75f4e
--- /dev/null
+++ b/drivers/iio/proximity/sx_common.h
@@ -0,0 +1,157 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright 2021 Google LLC.
+ *
+ * Code shared between most Semtech SAR sensor driver.
+ */
+
+#ifndef IIO_SX_COMMON_H
+#define IIO_SX_COMMON_H
+
+#include <linux/iio/iio.h>
+#include <linux/iio/types.h>
+#include <linux/regulator/consumer.h>
+#include <linux/types.h>
+
+struct device;
+struct i2c_client;
+struct regmap_config;
+struct sx_common_data;
+
+#define SX_COMMON_REG_IRQ_SRC				0x00
+
+#define SX_COMMON_MAX_NUM_CHANNELS	4
+static_assert(SX_COMMON_MAX_NUM_CHANNELS < BITS_PER_LONG);
+
+struct sx_common_reg_default {
+	u8 reg;
+	u8 def;
+};
+
+/**
+ * struct sx_common_ops: function pointers needed by common code
+ *
+ * List functions needed by common code to gather information or configure
+ * the sensor.
+ *
+ * @read_prox_data:	Function to read raw proximity data.
+ * @check_whoami:	Set device name based on whoami register.
+ * @init_compensation:	Function to set initial compensation.
+ * @wait_for_sample:	When there are no physical IRQ, function to wait for a
+ *			sample to be ready.
+ * @get_default_reg:	Populate the initial value for a given register.
+ */
+struct sx_common_ops {
+	int (*read_prox_data)(struct sx_common_data *data,
+			      const struct iio_chan_spec *chan, __be16 *val);
+	int (*check_whoami)(struct device *dev, struct iio_dev *indio_dev);
+	int (*init_compensation)(struct iio_dev *indio_dev);
+	int (*wait_for_sample)(struct sx_common_data *data);
+	const struct sx_common_reg_default  *
+		(*get_default_reg)(struct device *dev, int idx,
+				   struct sx_common_reg_default *reg_def);
+};
+
+/**
+ * struct sx_common_chip_info: Semtech Sensor private chip information
+ *
+ * @reg_stat:		Main status register address.
+ * @reg_irq_msk:	IRQ mask register address.
+ * @reg_enable_chan:	Address to enable/disable channels.
+ *			Each phase presented by the sensor is an IIO channel..
+ * @reg_reset:		Reset register address.
+ * @mask_enable_chan:	Mask over the channels bits in the enable channel
+ *			register.
+ * @stat_offset:	Offset to check phase status.
+ * @irq_msk_offset:	Offset to enable interrupt in the IRQ mask
+ *			register.
+ * @num_channels:	Number of channels.
+ * @num_default_regs:	Number of internal registers that can be configured.
+ *
+ * @ops:		Private functions pointers.
+ * @iio_channels:	Description of exposed iio channels.
+ * @num_iio_channels:	Number of iio_channels.
+ * @iio_info:		iio_info structure for this driver.
+ */
+struct sx_common_chip_info {
+	unsigned int reg_stat;
+	unsigned int reg_irq_msk;
+	unsigned int reg_enable_chan;
+	unsigned int reg_reset;
+
+	unsigned int mask_enable_chan;
+	unsigned int stat_offset;
+	unsigned int irq_msk_offset;
+	unsigned int num_channels;
+	int num_default_regs;
+
+	struct sx_common_ops ops;
+
+	const struct iio_chan_spec *iio_channels;
+	int num_iio_channels;
+	struct iio_info iio_info;
+};
+
+/**
+ * struct sx_common_data: Semtech Sensor private data structure.
+ *
+ * @chip_info:		Structure defining sensor internals.
+ * @mutex:		Serialize access to registers and channel configuration.
+ * @completion:		completion object to wait for data acquisition.
+ * @client:		I2C client structure.
+ * @trig:		IIO trigger object.
+ * @regmap:		Register map.
+ * @num_default_regs:	Number of default registers to set at init.
+ * @supplies:		Power supplies object.
+ * @chan_prox_stat:	Last reading of the proximity status for each channel.
+ *			We only send an event to user space when this changes.
+ * @trigger_enabled:	True when the device trigger is enabled.
+ * @buffer:		Buffer to store raw samples.
+ * @suspend_ctrl:	Remember enabled channels and sample rate during suspend.
+ * @chan_read:		Bit field for each raw channel enabled.
+ * @chan_event:		Bit field for each event enabled.
+ */
+struct sx_common_data {
+	const struct sx_common_chip_info *chip_info;
+
+	struct mutex mutex;
+	struct completion completion;
+	struct i2c_client *client;
+	struct iio_trigger *trig;
+	struct regmap *regmap;
+
+	struct regulator_bulk_data supplies[2];
+	unsigned long chan_prox_stat;
+	bool trigger_enabled;
+
+	/* Ensure correct alignment of timestamp when present. */
+	struct {
+		__be16 channels[SX_COMMON_MAX_NUM_CHANNELS];
+		s64 ts __aligned(8);
+	} buffer;
+
+	unsigned int suspend_ctrl;
+	unsigned long chan_read;
+	unsigned long chan_event;
+};
+
+int sx_common_read_proximity(struct sx_common_data *data,
+			     const struct iio_chan_spec *chan, int *val);
+
+int sx_common_read_event_config(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir);
+int sx_common_write_event_config(struct iio_dev *indio_dev,
+				 const struct iio_chan_spec *chan,
+				 enum iio_event_type type,
+				 enum iio_event_direction dir, int state);
+
+int sx_common_probe(struct i2c_client *client,
+		    const struct sx_common_chip_info *chip_info,
+		    const struct regmap_config *regmap_config);
+
+/* 3 is the number of events defined by a single phase. */
+extern const struct iio_event_spec sx_common_events[3];
+
+#endif  /* IIO_SX_COMMON_H */
diff --git a/drivers/iio/proximity/vcnl3020.c b/drivers/iio/proximity/vcnl3020.c
new file mode 100644
index 000000000000..cbc8400c773c
--- /dev/null
+++ b/drivers/iio/proximity/vcnl3020.c
@@ -0,0 +1,671 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Support for Vishay VCNL3020 proximity sensor on i2c bus.
+ * Based on Vishay VCNL4000 driver code.
+ */
+
+#include <linux/module.h>
+#include <linux/i2c.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/regmap.h>
+#include <linux/interrupt.h>
+
+#include <linux/iio/iio.h>
+#include <linux/iio/events.h>
+
+#define VCNL3020_PROD_ID	0x21
+
+#define VCNL_COMMAND		0x80 /* Command register */
+#define VCNL_PROD_REV		0x81 /* Product ID and Revision ID */
+#define VCNL_PROXIMITY_RATE	0x82 /* Rate of Proximity Measurement */
+#define VCNL_LED_CURRENT	0x83 /* IR LED current for proximity mode */
+#define VCNL_PS_RESULT_HI	0x87 /* Proximity result register, MSB */
+#define VCNL_PS_RESULT_LO	0x88 /* Proximity result register, LSB */
+#define VCNL_PS_ICR		0x89 /* Interrupt Control Register */
+#define VCNL_PS_LO_THR_HI	0x8a /* High byte of low threshold value */
+#define VCNL_PS_LO_THR_LO	0x8b /* Low byte of low threshold value */
+#define VCNL_PS_HI_THR_HI	0x8c /* High byte of high threshold value */
+#define VCNL_PS_HI_THR_LO	0x8d /* Low byte of high threshold value */
+#define VCNL_ISR		0x8e /* Interrupt Status Register */
+#define VCNL_PS_MOD_ADJ		0x8f /* Proximity Modulator Timing Adjustment */
+
+/* Bit masks for COMMAND register */
+#define VCNL_PS_RDY		BIT(5) /* proximity data ready? */
+#define VCNL_PS_OD		BIT(3) /* start on-demand proximity
+					* measurement
+					*/
+
+/* Enables periodic proximity measurement */
+#define VCNL_PS_EN		BIT(1)
+
+/* Enables state machine and LP oscillator for self timed  measurements */
+#define VCNL_PS_SELFTIMED_EN	BIT(0)
+
+/* Bit masks for ICR */
+
+/* Enable interrupts on low or high thresholds */
+#define  VCNL_ICR_THRES_EN	BIT(1)
+
+/* Bit masks for ISR */
+#define VCNL_INT_TH_HI		BIT(0)	/* High threshold hit */
+#define VCNL_INT_TH_LOW		BIT(1)	/* Low threshold hit */
+
+#define VCNL_ON_DEMAND_TIMEOUT_US	100000
+#define VCNL_POLL_US			20000
+
+static const int vcnl3020_prox_sampling_frequency[][2] = {
+	{1, 950000},
+	{3, 906250},
+	{7, 812500},
+	{16, 625000},
+	{31, 250000},
+	{62, 500000},
+	{125, 0},
+	{250, 0},
+};
+
+/**
+ * struct vcnl3020_data - vcnl3020 specific data.
+ * @regmap:	device register map.
+ * @dev:	vcnl3020 device.
+ * @rev:	revision id.
+ * @lock:	lock for protecting access to device hardware registers.
+ * @buf:	__be16 buffer.
+ */
+struct vcnl3020_data {
+	struct regmap *regmap;
+	struct device *dev;
+	u8 rev;
+	struct mutex lock;
+	__be16 buf;
+};
+
+/**
+ * struct vcnl3020_property - vcnl3020 property.
+ * @name:	property name.
+ * @reg:	i2c register offset.
+ * @conversion_func:	conversion function.
+ */
+struct vcnl3020_property {
+	const char *name;
+	u32 reg;
+	u32 (*conversion_func)(u32 *val);
+};
+
+static u32 microamp_to_reg(u32 *val)
+{
+	/*
+	 * An example of conversion from uA to reg val:
+	 * 200000 uA == 200 mA == 20
+	 */
+	return *val /= 10000;
+};
+
+static struct vcnl3020_property vcnl3020_led_current_property = {
+	.name = "vishay,led-current-microamp",
+	.reg = VCNL_LED_CURRENT,
+	.conversion_func = microamp_to_reg,
+};
+
+static int vcnl3020_get_and_apply_property(struct vcnl3020_data *data,
+					   struct vcnl3020_property prop)
+{
+	int rc;
+	u32 val;
+
+	rc = device_property_read_u32(data->dev, prop.name, &val);
+	if (rc)
+		return 0;
+
+	if (prop.conversion_func)
+		prop.conversion_func(&val);
+
+	rc = regmap_write(data->regmap, prop.reg, val);
+	if (rc) {
+		dev_err(data->dev, "Error (%d) setting property (%s)\n",
+			rc, prop.name);
+	}
+
+	return rc;
+}
+
+static int vcnl3020_init(struct vcnl3020_data *data)
+{
+	int rc;
+	unsigned int reg;
+
+	rc = regmap_read(data->regmap, VCNL_PROD_REV, &reg);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) reading product revision\n", rc);
+		return rc;
+	}
+
+	if (reg != VCNL3020_PROD_ID) {
+		dev_err(data->dev,
+			"Product id (%x) did not match vcnl3020 (%x)\n", reg,
+			VCNL3020_PROD_ID);
+		return -ENODEV;
+	}
+
+	data->rev = reg;
+	mutex_init(&data->lock);
+
+	return vcnl3020_get_and_apply_property(data,
+					       vcnl3020_led_current_property);
+};
+
+static bool vcnl3020_is_in_periodic_mode(struct vcnl3020_data *data)
+{
+	int rc;
+	unsigned int cmd;
+
+	rc = regmap_read(data->regmap, VCNL_COMMAND, &cmd);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) reading command register\n", rc);
+		return false;
+	}
+
+	return !!(cmd & VCNL_PS_SELFTIMED_EN);
+}
+
+static int vcnl3020_measure_proximity(struct vcnl3020_data *data, int *val)
+{
+	int rc;
+	unsigned int reg;
+
+	mutex_lock(&data->lock);
+
+	/* Protect against event capture. */
+	if (vcnl3020_is_in_periodic_mode(data)) {
+		rc = -EBUSY;
+		goto err_unlock;
+	}
+
+	rc = regmap_write(data->regmap, VCNL_COMMAND, VCNL_PS_OD);
+	if (rc)
+		goto err_unlock;
+
+	/* wait for data to become ready */
+	rc = regmap_read_poll_timeout(data->regmap, VCNL_COMMAND, reg,
+				      reg & VCNL_PS_RDY, VCNL_POLL_US,
+				      VCNL_ON_DEMAND_TIMEOUT_US);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) reading vcnl3020 command register\n", rc);
+		goto err_unlock;
+	}
+
+	/* high & low result bytes read */
+	rc = regmap_bulk_read(data->regmap, VCNL_PS_RESULT_HI, &data->buf,
+			      sizeof(data->buf));
+	if (rc)
+		goto err_unlock;
+
+	*val = be16_to_cpu(data->buf);
+
+err_unlock:
+	mutex_unlock(&data->lock);
+
+	return rc;
+}
+
+static int vcnl3020_read_proxy_samp_freq(struct vcnl3020_data *data, int *val,
+					 int *val2)
+{
+	int rc;
+	unsigned int prox_rate;
+
+	rc = regmap_read(data->regmap, VCNL_PROXIMITY_RATE, &prox_rate);
+	if (rc)
+		return rc;
+
+	if (prox_rate >= ARRAY_SIZE(vcnl3020_prox_sampling_frequency))
+		return -EINVAL;
+
+	*val = vcnl3020_prox_sampling_frequency[prox_rate][0];
+	*val2 = vcnl3020_prox_sampling_frequency[prox_rate][1];
+
+	return 0;
+}
+
+static int vcnl3020_write_proxy_samp_freq(struct vcnl3020_data *data, int val,
+					  int val2)
+{
+	unsigned int i;
+	int index = -1;
+	int rc;
+
+	mutex_lock(&data->lock);
+
+	/* Protect against event capture. */
+	if (vcnl3020_is_in_periodic_mode(data)) {
+		rc = -EBUSY;
+		goto err_unlock;
+	}
+
+	for (i = 0; i < ARRAY_SIZE(vcnl3020_prox_sampling_frequency); i++) {
+		if (val == vcnl3020_prox_sampling_frequency[i][0] &&
+		    val2 == vcnl3020_prox_sampling_frequency[i][1]) {
+			index = i;
+			break;
+		}
+	}
+
+	if (index < 0) {
+		rc = -EINVAL;
+		goto err_unlock;
+	}
+
+	rc = regmap_write(data->regmap, VCNL_PROXIMITY_RATE, index);
+	if (rc)
+		dev_err(data->dev,
+			"Error (%d) writing proximity rate register\n", rc);
+
+err_unlock:
+	mutex_unlock(&data->lock);
+
+	return rc;
+}
+
+static bool vcnl3020_is_thr_enabled(struct vcnl3020_data *data)
+{
+	int rc;
+	unsigned int icr;
+
+	rc = regmap_read(data->regmap, VCNL_PS_ICR, &icr);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) reading ICR register\n", rc);
+		return false;
+	}
+
+	return !!(icr & VCNL_ICR_THRES_EN);
+}
+
+static int vcnl3020_read_event(struct iio_dev *indio_dev,
+			       const struct iio_chan_spec *chan,
+			       enum iio_event_type type,
+			       enum iio_event_direction dir,
+			       enum iio_event_info info,
+			       int *val, int *val2)
+{
+	int rc;
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			rc = regmap_bulk_read(data->regmap, VCNL_PS_HI_THR_HI,
+					      &data->buf, sizeof(data->buf));
+			if (rc < 0)
+				return rc;
+			*val = be16_to_cpu(data->buf);
+			return IIO_VAL_INT;
+		case IIO_EV_DIR_FALLING:
+			rc = regmap_bulk_read(data->regmap, VCNL_PS_LO_THR_HI,
+					      &data->buf, sizeof(data->buf));
+			if (rc < 0)
+				return rc;
+			*val = be16_to_cpu(data->buf);
+			return IIO_VAL_INT;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl3020_write_event(struct iio_dev *indio_dev,
+				const struct iio_chan_spec *chan,
+				enum iio_event_type type,
+				enum iio_event_direction dir,
+				enum iio_event_info info,
+				int val, int val2)
+{
+	int rc;
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+
+	mutex_lock(&data->lock);
+
+	switch (info) {
+	case IIO_EV_INFO_VALUE:
+		switch (dir) {
+		case IIO_EV_DIR_RISING:
+			/* 16 bit word/ low * high */
+			data->buf = cpu_to_be16(val);
+			rc = regmap_bulk_write(data->regmap, VCNL_PS_HI_THR_HI,
+					       &data->buf, sizeof(data->buf));
+			if (rc < 0)
+				goto err_unlock;
+			rc = IIO_VAL_INT;
+			goto err_unlock;
+		case IIO_EV_DIR_FALLING:
+			data->buf = cpu_to_be16(val);
+			rc = regmap_bulk_write(data->regmap, VCNL_PS_LO_THR_HI,
+					       &data->buf, sizeof(data->buf));
+			if (rc < 0)
+				goto err_unlock;
+			rc = IIO_VAL_INT;
+			goto err_unlock;
+		default:
+			rc = -EINVAL;
+			goto err_unlock;
+		}
+	default:
+		rc = -EINVAL;
+		goto err_unlock;
+	}
+err_unlock:
+	mutex_unlock(&data->lock);
+
+	return rc;
+}
+
+static int vcnl3020_enable_periodic(struct iio_dev *indio_dev,
+				    struct vcnl3020_data *data)
+{
+	int rc;
+	int cmd;
+
+	mutex_lock(&data->lock);
+
+	/* Enable periodic measurement of proximity data. */
+	cmd = VCNL_PS_EN | VCNL_PS_SELFTIMED_EN;
+
+	rc = regmap_write(data->regmap, VCNL_COMMAND, cmd);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) writing command register\n", rc);
+		goto err_unlock;
+	}
+
+	/*
+	 * Enable interrupts on threshold, for proximity data by
+	 * default.
+	 */
+	rc = regmap_write(data->regmap, VCNL_PS_ICR, VCNL_ICR_THRES_EN);
+	if (rc)
+		dev_err(data->dev,
+			"Error (%d) reading ICR register\n", rc);
+
+err_unlock:
+	mutex_unlock(&data->lock);
+
+	return rc;
+}
+
+static int vcnl3020_disable_periodic(struct iio_dev *indio_dev,
+				     struct vcnl3020_data *data)
+{
+	int rc;
+
+	mutex_lock(&data->lock);
+
+	rc = regmap_write(data->regmap, VCNL_COMMAND, 0);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) writing command register\n", rc);
+		goto err_unlock;
+	}
+
+	rc = regmap_write(data->regmap, VCNL_PS_ICR, 0);
+	if (rc) {
+		dev_err(data->dev,
+			"Error (%d) writing ICR register\n", rc);
+		goto err_unlock;
+	}
+
+	/* Clear interrupt flag bit */
+	rc = regmap_write(data->regmap, VCNL_ISR, 0);
+	if (rc)
+		dev_err(data->dev,
+			"Error (%d) writing ISR register\n", rc);
+
+err_unlock:
+	mutex_unlock(&data->lock);
+
+	return rc;
+}
+
+static int vcnl3020_config_threshold(struct iio_dev *indio_dev, bool state)
+{
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+
+	if (state) {
+		return vcnl3020_enable_periodic(indio_dev, data);
+	} else {
+		if (!vcnl3020_is_thr_enabled(data))
+			return 0;
+		return vcnl3020_disable_periodic(indio_dev, data);
+	}
+}
+
+static int vcnl3020_write_event_config(struct iio_dev *indio_dev,
+				       const struct iio_chan_spec *chan,
+				       enum iio_event_type type,
+				       enum iio_event_direction dir,
+				       int state)
+{
+	switch (chan->type) {
+	case IIO_PROXIMITY:
+		return vcnl3020_config_threshold(indio_dev, state);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl3020_read_event_config(struct iio_dev *indio_dev,
+				      const struct iio_chan_spec *chan,
+				      enum iio_event_type type,
+				      enum iio_event_direction dir)
+{
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+
+	switch (chan->type) {
+	case IIO_PROXIMITY:
+		return vcnl3020_is_thr_enabled(data);
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_event_spec vcnl3020_event_spec[] = {
+	{
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_RISING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_FALLING,
+		.mask_separate = BIT(IIO_EV_INFO_VALUE),
+	}, {
+		.type = IIO_EV_TYPE_THRESH,
+		.dir = IIO_EV_DIR_EITHER,
+		.mask_separate = BIT(IIO_EV_INFO_ENABLE),
+	},
+};
+
+static const struct iio_chan_spec vcnl3020_channels[] = {
+	{
+		.type = IIO_PROXIMITY,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
+		.event_spec = vcnl3020_event_spec,
+		.num_event_specs = ARRAY_SIZE(vcnl3020_event_spec),
+	},
+};
+
+static int vcnl3020_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan, int *val,
+			     int *val2, long mask)
+{
+	int rc;
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		rc = vcnl3020_measure_proximity(data, val);
+		if (rc)
+			return rc;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		rc = vcnl3020_read_proxy_samp_freq(data, val, val2);
+		if (rc < 0)
+			return rc;
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl3020_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val, int val2, long mask)
+{
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		return vcnl3020_write_proxy_samp_freq(data, val, val2);
+	default:
+		return -EINVAL;
+	}
+}
+
+static int vcnl3020_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_SAMP_FREQ:
+		*vals = (int *)vcnl3020_prox_sampling_frequency;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = 2 * ARRAY_SIZE(vcnl3020_prox_sampling_frequency);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info vcnl3020_info = {
+	.read_raw = vcnl3020_read_raw,
+	.write_raw = vcnl3020_write_raw,
+	.read_avail = vcnl3020_read_avail,
+	.read_event_value = vcnl3020_read_event,
+	.write_event_value = vcnl3020_write_event,
+	.read_event_config = vcnl3020_read_event_config,
+	.write_event_config = vcnl3020_write_event_config,
+};
+
+static const struct regmap_config vcnl3020_regmap_config = {
+	.reg_bits	= 8,
+	.val_bits	= 8,
+	.max_register	= VCNL_PS_MOD_ADJ,
+};
+
+static irqreturn_t vcnl3020_handle_irq_thread(int irq, void *p)
+{
+	struct iio_dev *indio_dev = p;
+	struct vcnl3020_data *data = iio_priv(indio_dev);
+	unsigned int isr;
+	int rc;
+
+	rc = regmap_read(data->regmap, VCNL_ISR, &isr);
+	if (rc) {
+		dev_err(data->dev, "Error (%d) reading reg (0x%x)\n",
+			rc, VCNL_ISR);
+		return IRQ_HANDLED;
+	}
+
+	if (!(isr & VCNL_ICR_THRES_EN))
+		return IRQ_NONE;
+
+	iio_push_event(indio_dev,
+		       IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1,
+				            IIO_EV_TYPE_THRESH,
+				            IIO_EV_DIR_RISING),
+		       iio_get_time_ns(indio_dev));
+
+	rc = regmap_write(data->regmap, VCNL_ISR, isr & VCNL_ICR_THRES_EN);
+	if (rc)
+		dev_err(data->dev, "Error (%d) writing in reg (0x%x)\n",
+			rc, VCNL_ISR);
+
+	return IRQ_HANDLED;
+}
+
+static int vcnl3020_probe(struct i2c_client *client)
+{
+	struct vcnl3020_data *data;
+	struct iio_dev *indio_dev;
+	struct regmap *regmap;
+	int rc;
+
+	regmap = devm_regmap_init_i2c(client, &vcnl3020_regmap_config);
+	if (IS_ERR(regmap)) {
+		dev_err(&client->dev, "regmap_init failed\n");
+		return PTR_ERR(regmap);
+	}
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	data->regmap = regmap;
+	data->dev = &client->dev;
+
+	rc = vcnl3020_init(data);
+	if (rc)
+		return rc;
+
+	indio_dev->info = &vcnl3020_info;
+	indio_dev->channels = vcnl3020_channels;
+	indio_dev->num_channels = ARRAY_SIZE(vcnl3020_channels);
+	indio_dev->name = "vcnl3020";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	if (client->irq) {
+		rc = devm_request_threaded_irq(&client->dev, client->irq,
+					       NULL, vcnl3020_handle_irq_thread,
+					       IRQF_ONESHOT, indio_dev->name,
+					       indio_dev);
+		if (rc) {
+			dev_err(&client->dev,
+				"Error (%d) irq request failed (%u)\n", rc,
+				client->irq);
+			return rc;
+		}
+	}
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static const struct of_device_id vcnl3020_of_match[] = {
+	{
+		.compatible = "vishay,vcnl3020",
+	},
+	{}
+};
+MODULE_DEVICE_TABLE(of, vcnl3020_of_match);
+
+static struct i2c_driver vcnl3020_driver = {
+	.driver = {
+		.name   = "vcnl3020",
+		.of_match_table = vcnl3020_of_match,
+	},
+	.probe_new  = vcnl3020_probe,
+};
+module_i2c_driver(vcnl3020_driver);
+
+MODULE_AUTHOR("Ivan Mikhaylov <i.mikhaylov@yadro.com>");
+MODULE_DESCRIPTION("Vishay VCNL3020 proximity sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/proximity/vl53l0x-i2c.c b/drivers/iio/proximity/vl53l0x-i2c.c
index b48216cc1858..c7c4d33d340f 100644
--- a/drivers/iio/proximity/vl53l0x-i2c.c
+++ b/drivers/iio/proximity/vl53l0x-i2c.c
@@ -4,18 +4,21 @@
  *
  * Copyright (C) 2016 STMicroelectronics Imaging Division.
  * Copyright (C) 2018 Song Qiang <songqiang1304521@gmail.com>
+ * Copyright (C) 2020 Ivan Drobyshevskyi <drobyshevskyi@gmail.com>
  *
  * Datasheet available at
  * <https://www.st.com/resource/en/datasheet/vl53l0x.pdf>
  *
  * Default 7-bit i2c slave address 0x29.
  *
- * TODO: FIFO buffer, continuous mode, interrupts, range selection,
- * sensor ID check.
+ * TODO: FIFO buffer, continuous mode, range selection, sensor ID check.
  */
 
 #include <linux/delay.h>
+#include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
+#include <linux/irq.h>
+#include <linux/interrupt.h>
 #include <linux/module.h>
 
 #include <linux/iio/iio.h>
@@ -29,14 +32,78 @@
 #define VL_REG_SYSRANGE_MODE_TIMED			BIT(2)
 #define VL_REG_SYSRANGE_MODE_HISTOGRAM			BIT(3)
 
+#define VL_REG_SYSTEM_INTERRUPT_CONFIG_GPIO		0x0A
+#define VL_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY	BIT(2)
+
+#define VL_REG_SYSTEM_INTERRUPT_CLEAR			0x0B
+
 #define VL_REG_RESULT_INT_STATUS			0x13
 #define VL_REG_RESULT_RANGE_STATUS			0x14
 #define VL_REG_RESULT_RANGE_STATUS_COMPLETE		BIT(0)
 
 struct vl53l0x_data {
 	struct i2c_client *client;
+	struct completion completion;
+	struct regulator *vdd_supply;
+	struct gpio_desc *reset_gpio;
 };
 
+static irqreturn_t vl53l0x_handle_irq(int irq, void *priv)
+{
+	struct iio_dev *indio_dev = priv;
+	struct vl53l0x_data *data = iio_priv(indio_dev);
+
+	complete(&data->completion);
+
+	return IRQ_HANDLED;
+}
+
+static int vl53l0x_configure_irq(struct i2c_client *client,
+				 struct iio_dev *indio_dev)
+{
+	int irq_flags = irq_get_trigger_type(client->irq);
+	struct vl53l0x_data *data = iio_priv(indio_dev);
+	int ret;
+
+	if (!irq_flags)
+		irq_flags = IRQF_TRIGGER_FALLING;
+
+	ret = devm_request_irq(&client->dev, client->irq, vl53l0x_handle_irq,
+			irq_flags, indio_dev->name, indio_dev);
+	if (ret) {
+		dev_err(&client->dev, "devm_request_irq error: %d\n", ret);
+		return ret;
+	}
+
+	ret = i2c_smbus_write_byte_data(data->client,
+			VL_REG_SYSTEM_INTERRUPT_CONFIG_GPIO,
+			VL_REG_SYSTEM_INTERRUPT_GPIO_NEW_SAMPLE_READY);
+	if (ret < 0)
+		dev_err(&client->dev, "failed to configure IRQ: %d\n", ret);
+
+	return ret;
+}
+
+static void vl53l0x_clear_irq(struct vl53l0x_data *data)
+{
+	struct device *dev = &data->client->dev;
+	int ret;
+
+	ret = i2c_smbus_write_byte_data(data->client,
+					VL_REG_SYSTEM_INTERRUPT_CLEAR, 1);
+	if (ret < 0)
+		dev_err(dev, "failed to clear error irq: %d\n", ret);
+
+	ret = i2c_smbus_write_byte_data(data->client,
+					VL_REG_SYSTEM_INTERRUPT_CLEAR, 0);
+	if (ret < 0)
+		dev_err(dev, "failed to clear range irq: %d\n", ret);
+
+	ret = i2c_smbus_read_byte_data(data->client, VL_REG_RESULT_INT_STATUS);
+	if (ret < 0 || ret & 0x07)
+		dev_err(dev, "failed to clear irq: %d\n", ret);
+}
+
 static int vl53l0x_read_proximity(struct vl53l0x_data *data,
 				  const struct iio_chan_spec *chan,
 				  int *val)
@@ -45,24 +112,35 @@ static int vl53l0x_read_proximity(struct vl53l0x_data *data,
 	u16 tries = 20;
 	u8 buffer[12];
 	int ret;
+	unsigned long time_left;
 
 	ret = i2c_smbus_write_byte_data(client, VL_REG_SYSRANGE_START, 1);
 	if (ret < 0)
 		return ret;
 
-	do {
-		ret = i2c_smbus_read_byte_data(client,
+	if (data->client->irq) {
+		reinit_completion(&data->completion);
+
+		time_left = wait_for_completion_timeout(&data->completion, HZ/10);
+		if (time_left == 0)
+			return -ETIMEDOUT;
+
+		vl53l0x_clear_irq(data);
+	} else {
+		do {
+			ret = i2c_smbus_read_byte_data(client,
 					       VL_REG_RESULT_RANGE_STATUS);
-		if (ret < 0)
-			return ret;
+			if (ret < 0)
+				return ret;
 
-		if (ret & VL_REG_RESULT_RANGE_STATUS_COMPLETE)
-			break;
+			if (ret & VL_REG_RESULT_RANGE_STATUS_COMPLETE)
+				break;
 
-		usleep_range(1000, 5000);
-	} while (--tries);
-	if (!tries)
-		return -ETIMEDOUT;
+			usleep_range(1000, 5000);
+		} while (--tries);
+		if (!tries)
+			return -ETIMEDOUT;
+	}
 
 	ret = i2c_smbus_read_i2c_block_data(client, VL_REG_RESULT_RANGE_STATUS,
 					    12, buffer);
@@ -116,10 +194,35 @@ static const struct iio_info vl53l0x_info = {
 	.read_raw = vl53l0x_read_raw,
 };
 
+static void vl53l0x_power_off(void *_data)
+{
+	struct vl53l0x_data *data = _data;
+
+	gpiod_set_value_cansleep(data->reset_gpio, 1);
+
+	regulator_disable(data->vdd_supply);
+}
+
+static int vl53l0x_power_on(struct vl53l0x_data *data)
+{
+	int ret;
+
+	ret = regulator_enable(data->vdd_supply);
+	if (ret)
+		return ret;
+
+	gpiod_set_value_cansleep(data->reset_gpio, 0);
+
+	usleep_range(3200, 5000);
+
+	return 0;
+}
+
 static int vl53l0x_probe(struct i2c_client *client)
 {
 	struct vl53l0x_data *data;
 	struct iio_dev *indio_dev;
+	int error;
 
 	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
 	if (!indio_dev)
@@ -134,16 +237,52 @@ static int vl53l0x_probe(struct i2c_client *client)
 				     I2C_FUNC_SMBUS_BYTE_DATA))
 		return -EOPNOTSUPP;
 
-	indio_dev->dev.parent = &client->dev;
+	data->vdd_supply = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(data->vdd_supply))
+		return dev_err_probe(&client->dev, PTR_ERR(data->vdd_supply),
+				     "Unable to get VDD regulator\n");
+
+	data->reset_gpio = devm_gpiod_get_optional(&client->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(data->reset_gpio))
+		return dev_err_probe(&client->dev, PTR_ERR(data->reset_gpio),
+				     "Cannot get reset GPIO\n");
+
+	error = vl53l0x_power_on(data);
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "Failed to power on the chip\n");
+
+	error = devm_add_action_or_reset(&client->dev, vl53l0x_power_off, data);
+	if (error)
+		return dev_err_probe(&client->dev, error,
+				     "Failed to install poweroff action\n");
+
 	indio_dev->name = "vl53l0x";
 	indio_dev->info = &vl53l0x_info;
 	indio_dev->channels = vl53l0x_channels;
 	indio_dev->num_channels = ARRAY_SIZE(vl53l0x_channels);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
+	/* usage of interrupt is optional */
+	if (client->irq) {
+		int ret;
+
+		init_completion(&data->completion);
+
+		ret = vl53l0x_configure_irq(client, indio_dev);
+		if (ret)
+			return ret;
+	}
+
 	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
+static const struct i2c_device_id vl53l0x_id[] = {
+	{ "vl53l0x", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, vl53l0x_id);
+
 static const struct of_device_id st_vl53l0x_dt_match[] = {
 	{ .compatible = "st,vl53l0x", },
 	{ }
@@ -156,6 +295,7 @@ static struct i2c_driver vl53l0x_driver = {
 		.of_match_table = st_vl53l0x_dt_match,
 	},
 	.probe_new = vl53l0x_probe,
+	.id_table = vl53l0x_id,
 };
 module_i2c_driver(vl53l0x_driver);
 
diff --git a/drivers/iio/resolver/ad2s1200.c b/drivers/iio/resolver/ad2s1200.c
index a391f46ee06b..9d95241bdf8f 100644
--- a/drivers/iio/resolver/ad2s1200.c
+++ b/drivers/iio/resolver/ad2s1200.c
@@ -12,6 +12,7 @@
 #include <linux/device.h>
 #include <linux/gpio/consumer.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/mutex.h>
 #include <linux/spi/spi.h>
 #include <linux/sysfs.h>
@@ -40,7 +41,7 @@ struct ad2s1200_state {
 	struct spi_device *sdev;
 	struct gpio_desc *sample;
 	struct gpio_desc *rdvel;
-	__be16 rx ____cacheline_aligned;
+	__be16 rx __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad2s1200_read_raw(struct iio_dev *indio_dev,
@@ -157,7 +158,6 @@ static int ad2s1200_probe(struct spi_device *spi)
 		return PTR_ERR(st->rdvel);
 	}
 
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &ad2s1200_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = ad2s1200_channels;
@@ -193,7 +193,7 @@ MODULE_DEVICE_TABLE(spi, ad2s1200_id);
 static struct spi_driver ad2s1200_driver = {
 	.driver = {
 		.name = DRV_NAME,
-		.of_match_table = of_match_ptr(ad2s1200_of_match),
+		.of_match_table = ad2s1200_of_match,
 	},
 	.probe = ad2s1200_probe,
 	.id_table = ad2s1200_id,
diff --git a/drivers/iio/resolver/ad2s90.c b/drivers/iio/resolver/ad2s90.c
index a41f5cb10da5..be6836e55376 100644
--- a/drivers/iio/resolver/ad2s90.c
+++ b/drivers/iio/resolver/ad2s90.c
@@ -24,7 +24,7 @@
 struct ad2s90_state {
 	struct mutex lock; /* lock to protect rx buffer */
 	struct spi_device *sdev;
-	u8 rx[2] ____cacheline_aligned;
+	u8 rx[2] __aligned(IIO_DMA_MINALIGN);
 };
 
 static int ad2s90_read_raw(struct iio_dev *indio_dev,
@@ -94,7 +94,6 @@ static int ad2s90_probe(struct spi_device *spi)
 
 	mutex_init(&st->lock);
 	st->sdev = spi;
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &ad2s90_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = &ad2s90_chan;
diff --git a/drivers/iio/temperature/Kconfig b/drivers/iio/temperature/Kconfig
index e1ccb4003015..e8ed849e3b76 100644
--- a/drivers/iio/temperature/Kconfig
+++ b/drivers/iio/temperature/Kconfig
@@ -4,6 +4,16 @@
 #
 menu "Temperature sensors"
 
+config IQS620AT_TEMP
+	tristate "Azoteq IQS620AT temperature sensor"
+	depends on MFD_IQS62X || COMPILE_TEST
+	help
+	  Say Y here if you want to build support for the Azoteq IQS620AT
+	  temperature sensor.
+
+	  To compile this driver as a module, choose M here: the module
+	  will be called iqs620at-temp.
+
 config LTC2983
 	tristate "Analog Devices Multi-Sensor Digital Temperature Measurement System"
 	depends on SPI
@@ -35,7 +45,6 @@ config HID_SENSOR_TEMP
 	tristate "HID Environmental temperature sensor"
 	depends on HID_SENSOR_HUB
 	select IIO_BUFFER
-	select IIO_TRIGGERED_BUFFER
 	select HID_SENSOR_IIO_COMMON
 	select HID_SENSOR_IIO_TRIGGER
 	help
@@ -87,6 +96,16 @@ config TMP007
 	  This driver can also be built as a module. If so, the module will
 	  be called tmp007.
 
+config TMP117
+	tristate "TMP117 Digital temperature sensor with integrated NV memory"
+	depends on I2C
+	help
+	  If you say yes here you get support for the Texas Instruments
+	  TMP117 Digital temperature sensor with integrated NV memory.
+
+	  This driver can also be built as a module. If so, the module will
+	  be called tmp117.
+
 config TSYS01
 	tristate "Measurement Specialties TSYS01 temperature sensor using I2C bus connection"
 	depends on I2C
@@ -119,4 +138,14 @@ config MAX31856
 	  This driver can also be built as a module.  If so, the module
 	  will be called max31856.
 
+config MAX31865
+	tristate "MAX31865 RTD to Digital converter"
+	depends on SPI
+	help
+	  If you say yes here you get support for MAX31865
+	  thermocouple sensor chip connected via SPI.
+
+	  This driver can also be build as a module. If so, the module
+	  will be called max31865.
+
 endmenu
diff --git a/drivers/iio/temperature/Makefile b/drivers/iio/temperature/Makefile
index d6b850b0cf63..dd08e562ffe0 100644
--- a/drivers/iio/temperature/Makefile
+++ b/drivers/iio/temperature/Makefile
@@ -3,13 +3,16 @@
 # Makefile for industrial I/O temperature drivers
 #
 
+obj-$(CONFIG_IQS620AT_TEMP) += iqs620at-temp.o
 obj-$(CONFIG_LTC2983) += ltc2983.o
 obj-$(CONFIG_HID_SENSOR_TEMP) += hid-sensor-temperature.o
 obj-$(CONFIG_MAXIM_THERMOCOUPLE) += maxim_thermocouple.o
 obj-$(CONFIG_MAX31856) += max31856.o
+obj-$(CONFIG_MAX31865) += max31865.o
 obj-$(CONFIG_MLX90614) += mlx90614.o
 obj-$(CONFIG_MLX90632) += mlx90632.o
 obj-$(CONFIG_TMP006) += tmp006.o
 obj-$(CONFIG_TMP007) += tmp007.o
+obj-$(CONFIG_TMP117) += tmp117.o
 obj-$(CONFIG_TSYS01) += tsys01.o
 obj-$(CONFIG_TSYS02D) += tsys02d.o
diff --git a/drivers/iio/temperature/hid-sensor-temperature.c b/drivers/iio/temperature/hid-sensor-temperature.c
index eda55b9c1e9b..d40f235af1d4 100644
--- a/drivers/iio/temperature/hid-sensor-temperature.c
+++ b/drivers/iio/temperature/hid-sensor-temperature.c
@@ -7,9 +7,8 @@
 #include <linux/hid-sensor-hub.h>
 #include <linux/iio/buffer.h>
 #include <linux/iio/iio.h>
-#include <linux/iio/triggered_buffer.h>
-#include <linux/iio/trigger_consumer.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/platform_device.h>
 
 #include "../common/hid-sensors/hid-sensor-trigger.h"
@@ -17,13 +16,20 @@
 struct temperature_state {
 	struct hid_sensor_common common_attributes;
 	struct hid_sensor_hub_attribute_info temperature_attr;
-	s32 temperature_data;
+	struct {
+		s32 temperature_data;
+		u64 timestamp __aligned(8);
+	} scan;
 	int scale_pre_decml;
 	int scale_post_decml;
 	int scale_precision;
 	int value_offset;
 };
 
+static const u32 temperature_sensitivity_addresses[] = {
+	HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE,
+};
+
 /* Channel definitions */
 static const struct iio_chan_spec temperature_channels[] = {
 	{
@@ -34,7 +40,7 @@ static const struct iio_chan_spec temperature_channels[] = {
 			BIT(IIO_CHAN_INFO_SAMP_FREQ) |
 			BIT(IIO_CHAN_INFO_HYSTERESIS),
 	},
-	IIO_CHAN_SOFT_TIMESTAMP(3),
+	IIO_CHAN_SOFT_TIMESTAMP(1),
 };
 
 /* Adjust channel real bits based on report descriptor */
@@ -125,9 +131,8 @@ static int temperature_proc_event(struct hid_sensor_hub_device *hsdev,
 	struct temperature_state *temp_st = iio_priv(indio_dev);
 
 	if (atomic_read(&temp_st->common_attributes.data_ready))
-		iio_push_to_buffers_with_timestamp(indio_dev,
-				&temp_st->temperature_data,
-				iio_get_time_ns(indio_dev));
+		iio_push_to_buffers_with_timestamp(indio_dev, &temp_st->scan,
+						   iio_get_time_ns(indio_dev));
 
 	return 0;
 }
@@ -142,7 +147,7 @@ static int temperature_capture_sample(struct hid_sensor_hub_device *hsdev,
 
 	switch (usage_id) {
 	case HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE:
-		temp_st->temperature_data = *(s32 *)raw_data;
+		temp_st->scan.temperature_data = *(s32 *)raw_data;
 		return 0;
 	default:
 		return -EINVAL;
@@ -173,14 +178,6 @@ static int temperature_parse_report(struct platform_device *pdev,
 				&st->temperature_attr,
 				&st->scale_pre_decml, &st->scale_post_decml);
 
-	/* Set Sensitivity field ids, when there is no individual modifier */
-	if (st->common_attributes.sensitivity.index < 0)
-		sensor_hub_input_get_attribute_info(hsdev,
-			HID_FEATURE_REPORT, usage_id,
-			HID_USAGE_SENSOR_DATA_MOD_CHANGE_SENSITIVITY_ABS |
-			HID_USAGE_SENSOR_DATA_ENVIRONMENTAL_TEMPERATURE,
-			&st->common_attributes.sensitivity);
-
 	return ret;
 }
 
@@ -209,7 +206,9 @@ static int hid_temperature_probe(struct platform_device *pdev)
 
 	ret = hid_sensor_parse_common_attributes(hsdev,
 					HID_USAGE_SENSOR_TEMPERATURE,
-					&temp_st->common_attributes);
+					&temp_st->common_attributes,
+					temperature_sensitivity_addresses,
+					ARRAY_SIZE(temperature_sensitivity_addresses));
 	if (ret)
 		return ret;
 
@@ -225,17 +224,12 @@ static int hid_temperature_probe(struct platform_device *pdev)
 
 	indio_dev->channels = temp_chans;
 	indio_dev->num_channels = ARRAY_SIZE(temperature_channels);
-	indio_dev->dev.parent = &pdev->dev;
 	indio_dev->info = &temperature_info;
 	indio_dev->name = name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
-	ret = devm_iio_triggered_buffer_setup(&pdev->dev, indio_dev,
-					&iio_pollfunc_store_time, NULL, NULL);
-	if (ret)
-		return ret;
-
 	atomic_set(&temp_st->common_attributes.data_ready, 0);
+
 	ret = hid_sensor_setup_trigger(indio_dev, name,
 				&temp_st->common_attributes);
 	if (ret)
@@ -258,7 +252,7 @@ static int hid_temperature_probe(struct platform_device *pdev)
 error_remove_callback:
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE);
 error_remove_trigger:
-	hid_sensor_remove_trigger(&temp_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &temp_st->common_attributes);
 	return ret;
 }
 
@@ -270,7 +264,7 @@ static int hid_temperature_remove(struct platform_device *pdev)
 	struct temperature_state *temp_st = iio_priv(indio_dev);
 
 	sensor_hub_remove_callback(hsdev, HID_USAGE_SENSOR_TEMPERATURE);
-	hid_sensor_remove_trigger(&temp_st->common_attributes);
+	hid_sensor_remove_trigger(indio_dev, &temp_st->common_attributes);
 
 	return 0;
 }
@@ -298,3 +292,4 @@ module_platform_driver(hid_temperature_platform_driver);
 MODULE_DESCRIPTION("HID Environmental temperature sensor");
 MODULE_AUTHOR("Song Hongyan <hongyan.song@intel.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_HID);
diff --git a/drivers/iio/temperature/iqs620at-temp.c b/drivers/iio/temperature/iqs620at-temp.c
new file mode 100644
index 000000000000..e2f878d57af7
--- /dev/null
+++ b/drivers/iio/temperature/iqs620at-temp.c
@@ -0,0 +1,98 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Azoteq IQS620AT Temperature Sensor
+ *
+ * Copyright (C) 2019 Jeff LaBundy <jeff@labundy.com>
+ */
+
+#include <linux/device.h>
+#include <linux/iio/iio.h>
+#include <linux/kernel.h>
+#include <linux/mfd/iqs62x.h>
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/regmap.h>
+
+#define IQS620_TEMP_UI_OUT			0x1A
+
+#define IQS620_TEMP_SCALE			1000
+#define IQS620_TEMP_OFFSET			(-100)
+#define IQS620_TEMP_OFFSET_V3			(-40)
+
+static int iqs620_temp_read_raw(struct iio_dev *indio_dev,
+				struct iio_chan_spec const *chan,
+				int *val, int *val2, long mask)
+{
+	struct iqs62x_core *iqs62x = iio_device_get_drvdata(indio_dev);
+	int ret;
+	__le16 val_buf;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = regmap_raw_read(iqs62x->regmap, IQS620_TEMP_UI_OUT,
+				      &val_buf, sizeof(val_buf));
+		if (ret)
+			return ret;
+
+		*val = le16_to_cpu(val_buf);
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		*val = IQS620_TEMP_SCALE;
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_OFFSET:
+		*val = iqs62x->hw_num < IQS620_HW_NUM_V3 ? IQS620_TEMP_OFFSET
+							 : IQS620_TEMP_OFFSET_V3;
+		return IIO_VAL_INT;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_info iqs620_temp_info = {
+	.read_raw = &iqs620_temp_read_raw,
+};
+
+static const struct iio_chan_spec iqs620_temp_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+				      BIT(IIO_CHAN_INFO_SCALE) |
+				      BIT(IIO_CHAN_INFO_OFFSET),
+	},
+};
+
+static int iqs620_temp_probe(struct platform_device *pdev)
+{
+	struct iqs62x_core *iqs62x = dev_get_drvdata(pdev->dev.parent);
+	struct iio_dev *indio_dev;
+
+	indio_dev = devm_iio_device_alloc(&pdev->dev, 0);
+	if (!indio_dev)
+		return -ENOMEM;
+
+	iio_device_set_drvdata(indio_dev, iqs62x);
+
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = iqs620_temp_channels;
+	indio_dev->num_channels = ARRAY_SIZE(iqs620_temp_channels);
+	indio_dev->name = iqs62x->dev_desc->dev_name;
+	indio_dev->info = &iqs620_temp_info;
+
+	return devm_iio_device_register(&pdev->dev, indio_dev);
+}
+
+static struct platform_driver iqs620_temp_platform_driver = {
+	.driver = {
+		.name = "iqs620at-temp",
+	},
+	.probe = iqs620_temp_probe,
+};
+module_platform_driver(iqs620_temp_platform_driver);
+
+MODULE_AUTHOR("Jeff LaBundy <jeff@labundy.com>");
+MODULE_DESCRIPTION("Azoteq IQS620AT Temperature Sensor");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:iqs620at-temp");
diff --git a/drivers/iio/temperature/ltc2983.c b/drivers/iio/temperature/ltc2983.c
index d39c0d6b77f1..a60ccf183687 100644
--- a/drivers/iio/temperature/ltc2983.c
+++ b/drivers/iio/temperature/ltc2983.c
@@ -12,11 +12,15 @@
 #include <linux/iio/iio.h>
 #include <linux/interrupt.h>
 #include <linux/list.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
-#include <linux/of_gpio.h>
+#include <linux/property.h>
 #include <linux/regmap.h>
 #include <linux/spi/spi.h>
 
+#include <asm/byteorder.h>
+#include <asm/unaligned.h>
+
 /* register map */
 #define LTC2983_STATUS_REG			0x0000
 #define LTC2983_TEMP_RES_START_REG		0x0010
@@ -89,6 +93,8 @@
 
 #define	LTC2983_STATUS_START_MASK	BIT(7)
 #define	LTC2983_STATUS_START(x)		FIELD_PREP(LTC2983_STATUS_START_MASK, x)
+#define	LTC2983_STATUS_UP_MASK		GENMASK(7, 6)
+#define	LTC2983_STATUS_UP(reg)		FIELD_GET(LTC2983_STATUS_UP_MASK, reg)
 
 #define	LTC2983_STATUS_CHAN_SEL_MASK	GENMASK(4, 0)
 #define	LTC2983_STATUS_CHAN_SEL(x) \
@@ -198,11 +204,11 @@ struct ltc2983_data {
 	u8 num_channels;
 	u8 iio_channels;
 	/*
-	 * DMA (thus cache coherency maintenance) requires the
+	 * DMA (thus cache coherency maintenance) may require the
 	 * transfer buffers to live in their own cache lines.
 	 * Holds the converted temperature
 	 */
-	__be32 temp ____cacheline_aligned;
+	__be32 temp __aligned(IIO_DMA_MINALIGN);
 };
 
 struct ltc2983_sensor {
@@ -217,7 +223,7 @@ struct ltc2983_sensor {
 
 struct ltc2983_custom_sensor {
 	/* raw table sensor data */
-	u8 *table;
+	void *table;
 	size_t size;
 	/* address offset */
 	s8 offset;
@@ -375,25 +381,25 @@ static int __ltc2983_chan_custom_sensor_assign(struct ltc2983_data *st,
 	return regmap_bulk_write(st->regmap, reg, custom->table, custom->size);
 }
 
-static struct ltc2983_custom_sensor *__ltc2983_custom_sensor_new(
-						struct ltc2983_data *st,
-						const struct device_node *np,
-						const char *propname,
-						const bool is_steinhart,
-						const u32 resolution,
-						const bool has_signed)
+static struct ltc2983_custom_sensor *
+__ltc2983_custom_sensor_new(struct ltc2983_data *st, const struct fwnode_handle *fn,
+			    const char *propname, const bool is_steinhart,
+			    const u32 resolution, const bool has_signed)
 {
 	struct ltc2983_custom_sensor *new_custom;
-	u8 index, n_entries, tbl = 0;
 	struct device *dev = &st->spi->dev;
 	/*
 	 * For custom steinhart, the full u32 is taken. For all the others
 	 * the MSB is discarded.
 	 */
-	const u8 n_size = (is_steinhart == true) ? 4 : 3;
-	const u8 e_size = (is_steinhart == true) ? sizeof(u32) : sizeof(u64);
+	const u8 n_size = is_steinhart ? 4 : 3;
+	u8 index, n_entries;
+	int ret;
 
-	n_entries = of_property_count_elems_of_size(np, propname, e_size);
+	if (is_steinhart)
+		n_entries = fwnode_property_count_u32(fn, propname);
+	else
+		n_entries = fwnode_property_count_u64(fn, propname);
 	/* n_entries must be an even number */
 	if (!n_entries || (n_entries % 2) != 0) {
 		dev_err(dev, "Number of entries either 0 or not even\n");
@@ -407,8 +413,8 @@ static struct ltc2983_custom_sensor *__ltc2983_custom_sensor_new(
 	new_custom->size = n_entries * n_size;
 	/* check Steinhart size */
 	if (is_steinhart && new_custom->size != LTC2983_CUSTOM_STEINHART_SIZE) {
-		dev_err(dev, "Steinhart sensors size(%zu) must be 24",
-							new_custom->size);
+		dev_err(dev, "Steinhart sensors size(%zu) must be %u\n", new_custom->size,
+			LTC2983_CUSTOM_STEINHART_SIZE);
 		return ERR_PTR(-EINVAL);
 	}
 	/* Check space on the table. */
@@ -421,21 +427,33 @@ static struct ltc2983_custom_sensor *__ltc2983_custom_sensor_new(
 	}
 
 	/* allocate the table */
-	new_custom->table = devm_kzalloc(dev, new_custom->size, GFP_KERNEL);
+	if (is_steinhart)
+		new_custom->table = devm_kcalloc(dev, n_entries, sizeof(u32), GFP_KERNEL);
+	else
+		new_custom->table = devm_kcalloc(dev, n_entries, sizeof(u64), GFP_KERNEL);
 	if (!new_custom->table)
 		return ERR_PTR(-ENOMEM);
 
-	for (index = 0; index < n_entries; index++) {
-		u64 temp = 0, j;
-		/*
-		 * Steinhart sensors are configured with raw values in the
-		 * devicetree. For the other sensors we must convert the
-		 * value to raw. The odd index's correspond to temperarures
-		 * and always have 1/1024 of resolution. Temperatures also
-		 * come in kelvin, so signed values is not possible
-		 */
-		if (!is_steinhart) {
-			of_property_read_u64_index(np, propname, index, &temp);
+	/*
+	 * Steinhart sensors are configured with raw values in the firmware
+	 * node. For the other sensors we must convert the value to raw.
+	 * The odd index's correspond to temperatures and always have 1/1024
+	 * of resolution. Temperatures also come in Kelvin, so signed values
+	 * are not possible.
+	 */
+	if (is_steinhart) {
+		ret = fwnode_property_read_u32_array(fn, propname, new_custom->table, n_entries);
+		if (ret < 0)
+			return ERR_PTR(ret);
+
+		cpu_to_be32_array(new_custom->table, new_custom->table, n_entries);
+	} else {
+		ret = fwnode_property_read_u64_array(fn, propname, new_custom->table, n_entries);
+		if (ret < 0)
+			return ERR_PTR(ret);
+
+		for (index = 0; index < n_entries; index++) {
+			u64 temp = ((u64 *)new_custom->table)[index];
 
 			if ((index % 2) != 0)
 				temp = __convert_to_raw(temp, 1024);
@@ -443,16 +461,9 @@ static struct ltc2983_custom_sensor *__ltc2983_custom_sensor_new(
 				temp = __convert_to_raw_sign(temp, resolution);
 			else
 				temp = __convert_to_raw(temp, resolution);
-		} else {
-			u32 t32;
 
-			of_property_read_u32_index(np, propname, index, &t32);
-			temp = t32;
+			put_unaligned_be24(temp, new_custom->table + index * 3);
 		}
-
-		for (j = 0; j < n_size; j++)
-			new_custom->table[tbl++] =
-				temp >> (8 * (n_size - j - 1));
 	}
 
 	new_custom->is_steinhart = is_steinhart;
@@ -595,13 +606,12 @@ static int ltc2983_adc_assign_chan(struct ltc2983_data *st,
 	return __ltc2983_chan_assign_common(st, sensor, chan_val);
 }
 
-static struct ltc2983_sensor *ltc2983_thermocouple_new(
-					const struct device_node *child,
-					struct ltc2983_data *st,
-					const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_thermocouple_new(const struct fwnode_handle *child, struct ltc2983_data *st,
+			 const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_thermocouple *thermo;
-	struct device_node *phandle;
+	struct fwnode_handle *ref;
 	u32 oc_current;
 	int ret;
 
@@ -609,11 +619,10 @@ static struct ltc2983_sensor *ltc2983_thermocouple_new(
 	if (!thermo)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_property_read_bool(child, "adi,single-ended"))
+	if (fwnode_property_read_bool(child, "adi,single-ended"))
 		thermo->sensor_config = LTC2983_THERMOCOUPLE_SGL(1);
 
-	ret = of_property_read_u32(child, "adi,sensor-oc-current-microamp",
-				   &oc_current);
+	ret = fwnode_property_read_u32(child, "adi,sensor-oc-current-microamp", &oc_current);
 	if (!ret) {
 		switch (oc_current) {
 		case 10:
@@ -649,20 +658,18 @@ static struct ltc2983_sensor *ltc2983_thermocouple_new(
 		return ERR_PTR(-EINVAL);
 	}
 
-	phandle = of_parse_phandle(child, "adi,cold-junction-handle", 0);
-	if (phandle) {
-		int ret;
-
-		ret = of_property_read_u32(phandle, "reg",
-					   &thermo->cold_junction_chan);
+	ref = fwnode_find_reference(child, "adi,cold-junction-handle", 0);
+	if (IS_ERR(ref)) {
+		ref = NULL;
+	} else {
+		ret = fwnode_property_read_u32(ref, "reg", &thermo->cold_junction_chan);
 		if (ret) {
 			/*
 			 * This would be catched later but we can just return
 			 * the error right away.
 			 */
 			dev_err(&st->spi->dev, "Property reg must be given\n");
-			of_node_put(phandle);
-			return ERR_PTR(-EINVAL);
+			goto fail;
 		}
 	}
 
@@ -674,8 +681,8 @@ static struct ltc2983_sensor *ltc2983_thermocouple_new(
 							     propname, false,
 							     16384, true);
 		if (IS_ERR(thermo->custom)) {
-			of_node_put(phandle);
-			return ERR_CAST(thermo->custom);
+			ret = PTR_ERR(thermo->custom);
+			goto fail;
 		}
 	}
 
@@ -683,37 +690,41 @@ static struct ltc2983_sensor *ltc2983_thermocouple_new(
 	thermo->sensor.fault_handler = ltc2983_thermocouple_fault_handler;
 	thermo->sensor.assign_chan = ltc2983_thermocouple_assign_chan;
 
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return &thermo->sensor;
+
+fail:
+	fwnode_handle_put(ref);
+	return ERR_PTR(ret);
 }
 
-static struct ltc2983_sensor *ltc2983_rtd_new(const struct device_node *child,
-					  struct ltc2983_data *st,
-					  const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_rtd_new(const struct fwnode_handle *child, struct ltc2983_data *st,
+		const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_rtd *rtd;
 	int ret = 0;
 	struct device *dev = &st->spi->dev;
-	struct device_node *phandle;
+	struct fwnode_handle *ref;
 	u32 excitation_current = 0, n_wires = 0;
 
 	rtd = devm_kzalloc(dev, sizeof(*rtd), GFP_KERNEL);
 	if (!rtd)
 		return ERR_PTR(-ENOMEM);
 
-	phandle = of_parse_phandle(child, "adi,rsense-handle", 0);
-	if (!phandle) {
+	ref = fwnode_find_reference(child, "adi,rsense-handle", 0);
+	if (IS_ERR(ref)) {
 		dev_err(dev, "Property adi,rsense-handle missing or invalid");
-		return ERR_PTR(-EINVAL);
+		return ERR_CAST(ref);
 	}
 
-	ret = of_property_read_u32(phandle, "reg", &rtd->r_sense_chan);
+	ret = fwnode_property_read_u32(ref, "reg", &rtd->r_sense_chan);
 	if (ret) {
 		dev_err(dev, "Property reg must be given\n");
 		goto fail;
 	}
 
-	ret = of_property_read_u32(child, "adi,number-of-wires", &n_wires);
+	ret = fwnode_property_read_u32(child, "adi,number-of-wires", &n_wires);
 	if (!ret) {
 		switch (n_wires) {
 		case 2:
@@ -736,9 +747,9 @@ static struct ltc2983_sensor *ltc2983_rtd_new(const struct device_node *child,
 		}
 	}
 
-	if (of_property_read_bool(child, "adi,rsense-share")) {
+	if (fwnode_property_read_bool(child, "adi,rsense-share")) {
 		/* Current rotation is only available with rsense sharing */
-		if (of_property_read_bool(child, "adi,current-rotate")) {
+		if (fwnode_property_read_bool(child, "adi,current-rotate")) {
 			if (n_wires == 2 || n_wires == 3) {
 				dev_err(dev,
 					"Rotation not allowed for 2/3 Wire RTDs");
@@ -801,8 +812,8 @@ static struct ltc2983_sensor *ltc2983_rtd_new(const struct device_node *child,
 							  "adi,custom-rtd",
 							  false, 2048, false);
 		if (IS_ERR(rtd->custom)) {
-			of_node_put(phandle);
-			return ERR_CAST(rtd->custom);
+			ret = PTR_ERR(rtd->custom);
+			goto fail;
 		}
 	}
 
@@ -810,8 +821,8 @@ static struct ltc2983_sensor *ltc2983_rtd_new(const struct device_node *child,
 	rtd->sensor.fault_handler = ltc2983_common_fault_handler;
 	rtd->sensor.assign_chan = ltc2983_rtd_assign_chan;
 
-	ret = of_property_read_u32(child, "adi,excitation-current-microamp",
-				   &excitation_current);
+	ret = fwnode_property_read_u32(child, "adi,excitation-current-microamp",
+				       &excitation_current);
 	if (ret) {
 		/* default to 5uA */
 		rtd->excitation_current = 1;
@@ -850,23 +861,22 @@ static struct ltc2983_sensor *ltc2983_rtd_new(const struct device_node *child,
 		}
 	}
 
-	of_property_read_u32(child, "adi,rtd-curve", &rtd->rtd_curve);
+	fwnode_property_read_u32(child, "adi,rtd-curve", &rtd->rtd_curve);
 
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return &rtd->sensor;
 fail:
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return ERR_PTR(ret);
 }
 
-static struct ltc2983_sensor *ltc2983_thermistor_new(
-					const struct device_node *child,
-					struct ltc2983_data *st,
-					const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_thermistor_new(const struct fwnode_handle *child, struct ltc2983_data *st,
+		       const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_thermistor *thermistor;
 	struct device *dev = &st->spi->dev;
-	struct device_node *phandle;
+	struct fwnode_handle *ref;
 	u32 excitation_current = 0;
 	int ret = 0;
 
@@ -874,23 +884,23 @@ static struct ltc2983_sensor *ltc2983_thermistor_new(
 	if (!thermistor)
 		return ERR_PTR(-ENOMEM);
 
-	phandle = of_parse_phandle(child, "adi,rsense-handle", 0);
-	if (!phandle) {
+	ref = fwnode_find_reference(child, "adi,rsense-handle", 0);
+	if (IS_ERR(ref)) {
 		dev_err(dev, "Property adi,rsense-handle missing or invalid");
-		return ERR_PTR(-EINVAL);
+		return ERR_CAST(ref);
 	}
 
-	ret = of_property_read_u32(phandle, "reg", &thermistor->r_sense_chan);
+	ret = fwnode_property_read_u32(ref, "reg", &thermistor->r_sense_chan);
 	if (ret) {
 		dev_err(dev, "rsense channel must be configured...\n");
 		goto fail;
 	}
 
-	if (of_property_read_bool(child, "adi,single-ended")) {
+	if (fwnode_property_read_bool(child, "adi,single-ended")) {
 		thermistor->sensor_config = LTC2983_THERMISTOR_SGL(1);
-	} else if (of_property_read_bool(child, "adi,rsense-share")) {
+	} else if (fwnode_property_read_bool(child, "adi,rsense-share")) {
 		/* rotation is only possible if sharing rsense */
-		if (of_property_read_bool(child, "adi,current-rotate"))
+		if (fwnode_property_read_bool(child, "adi,current-rotate"))
 			thermistor->sensor_config =
 						LTC2983_THERMISTOR_C_ROTATE(1);
 		else
@@ -924,16 +934,16 @@ static struct ltc2983_sensor *ltc2983_thermistor_new(
 								 steinhart,
 								 64, false);
 		if (IS_ERR(thermistor->custom)) {
-			of_node_put(phandle);
-			return ERR_CAST(thermistor->custom);
+			ret = PTR_ERR(thermistor->custom);
+			goto fail;
 		}
 	}
 	/* set common parameters */
 	thermistor->sensor.fault_handler = ltc2983_common_fault_handler;
 	thermistor->sensor.assign_chan = ltc2983_thermistor_assign_chan;
 
-	ret = of_property_read_u32(child, "adi,excitation-current-nanoamp",
-				   &excitation_current);
+	ret = fwnode_property_read_u32(child, "adi,excitation-current-nanoamp",
+				       &excitation_current);
 	if (ret) {
 		/* Auto range is not allowed for custom sensors */
 		if (sensor->type >= LTC2983_SENSOR_THERMISTOR_STEINHART)
@@ -997,17 +1007,16 @@ static struct ltc2983_sensor *ltc2983_thermistor_new(
 		}
 	}
 
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return &thermistor->sensor;
 fail:
-	of_node_put(phandle);
+	fwnode_handle_put(ref);
 	return ERR_PTR(ret);
 }
 
-static struct ltc2983_sensor *ltc2983_diode_new(
-					const struct device_node *child,
-					const struct ltc2983_data *st,
-					const struct ltc2983_sensor *sensor)
+static struct ltc2983_sensor *
+ltc2983_diode_new(const struct fwnode_handle *child, const struct ltc2983_data *st,
+		  const struct ltc2983_sensor *sensor)
 {
 	struct ltc2983_diode *diode;
 	u32 temp = 0, excitation_current = 0;
@@ -1017,13 +1026,13 @@ static struct ltc2983_sensor *ltc2983_diode_new(
 	if (!diode)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_property_read_bool(child, "adi,single-ended"))
+	if (fwnode_property_read_bool(child, "adi,single-ended"))
 		diode->sensor_config = LTC2983_DIODE_SGL(1);
 
-	if (of_property_read_bool(child, "adi,three-conversion-cycles"))
+	if (fwnode_property_read_bool(child, "adi,three-conversion-cycles"))
 		diode->sensor_config |= LTC2983_DIODE_3_CONV_CYCLE(1);
 
-	if (of_property_read_bool(child, "adi,average-on"))
+	if (fwnode_property_read_bool(child, "adi,average-on"))
 		diode->sensor_config |= LTC2983_DIODE_AVERAGE_ON(1);
 
 	/* validate channel index */
@@ -1038,8 +1047,8 @@ static struct ltc2983_sensor *ltc2983_diode_new(
 	diode->sensor.fault_handler = ltc2983_common_fault_handler;
 	diode->sensor.assign_chan = ltc2983_diode_assign_chan;
 
-	ret = of_property_read_u32(child, "adi,excitation-current-microamp",
-				   &excitation_current);
+	ret = fwnode_property_read_u32(child, "adi,excitation-current-microamp",
+				       &excitation_current);
 	if (!ret) {
 		switch (excitation_current) {
 		case 10:
@@ -1062,7 +1071,7 @@ static struct ltc2983_sensor *ltc2983_diode_new(
 		}
 	}
 
-	of_property_read_u32(child, "adi,ideal-factor-value", &temp);
+	fwnode_property_read_u32(child, "adi,ideal-factor-value", &temp);
 
 	/* 2^20 resolution */
 	diode->ideal_factor_value = __convert_to_raw(temp, 1048576);
@@ -1070,7 +1079,7 @@ static struct ltc2983_sensor *ltc2983_diode_new(
 	return &diode->sensor;
 }
 
-static struct ltc2983_sensor *ltc2983_r_sense_new(struct device_node *child,
+static struct ltc2983_sensor *ltc2983_r_sense_new(struct fwnode_handle *child,
 					struct ltc2983_data *st,
 					const struct ltc2983_sensor *sensor)
 {
@@ -1089,7 +1098,7 @@ static struct ltc2983_sensor *ltc2983_r_sense_new(struct device_node *child,
 		return ERR_PTR(-EINVAL);
 	}
 
-	ret = of_property_read_u32(child, "adi,rsense-val-milli-ohms", &temp);
+	ret = fwnode_property_read_u32(child, "adi,rsense-val-milli-ohms", &temp);
 	if (ret) {
 		dev_err(&st->spi->dev, "Property adi,rsense-val-milli-ohms missing\n");
 		return ERR_PTR(-EINVAL);
@@ -1108,7 +1117,7 @@ static struct ltc2983_sensor *ltc2983_r_sense_new(struct device_node *child,
 	return &rsense->sensor;
 }
 
-static struct ltc2983_sensor *ltc2983_adc_new(struct device_node *child,
+static struct ltc2983_sensor *ltc2983_adc_new(struct fwnode_handle *child,
 					 struct ltc2983_data *st,
 					 const struct ltc2983_sensor *sensor)
 {
@@ -1118,7 +1127,7 @@ static struct ltc2983_sensor *ltc2983_adc_new(struct device_node *child,
 	if (!adc)
 		return ERR_PTR(-ENOMEM);
 
-	if (of_property_read_bool(child, "adi,single-ended"))
+	if (fwnode_property_read_bool(child, "adi,single-ended"))
 		adc->single_ended = true;
 
 	if (!adc->single_ended &&
@@ -1262,49 +1271,53 @@ static irqreturn_t ltc2983_irq_handler(int irq, void *data)
 
 static int ltc2983_parse_dt(struct ltc2983_data *st)
 {
-	struct device_node *child;
 	struct device *dev = &st->spi->dev;
+	struct fwnode_handle *child;
 	int ret = 0, chan = 0, channel_avail_mask = 0;
 
-	of_property_read_u32(dev->of_node, "adi,mux-delay-config-us",
-			     &st->mux_delay_config);
+	device_property_read_u32(dev, "adi,mux-delay-config-us", &st->mux_delay_config);
 
-	of_property_read_u32(dev->of_node, "adi,filter-notch-freq",
-			     &st->filter_notch_freq);
+	device_property_read_u32(dev, "adi,filter-notch-freq", &st->filter_notch_freq);
+
+	st->num_channels = device_get_child_node_count(dev);
+	if (!st->num_channels) {
+		dev_err(&st->spi->dev, "At least one channel must be given!");
+		return -EINVAL;
+	}
 
-	st->num_channels = of_get_available_child_count(dev->of_node);
 	st->sensors = devm_kcalloc(dev, st->num_channels, sizeof(*st->sensors),
 				   GFP_KERNEL);
 	if (!st->sensors)
 		return -ENOMEM;
 
 	st->iio_channels = st->num_channels;
-	for_each_available_child_of_node(dev->of_node, child) {
+	device_for_each_child_node(dev, child) {
 		struct ltc2983_sensor sensor;
 
-		ret = of_property_read_u32(child, "reg", &sensor.chan);
+		ret = fwnode_property_read_u32(child, "reg", &sensor.chan);
 		if (ret) {
 			dev_err(dev, "reg property must given for child nodes\n");
-			return ret;
+			goto put_child;
 		}
 
 		/* check if we have a valid channel */
 		if (sensor.chan < LTC2983_MIN_CHANNELS_NR ||
 		    sensor.chan > LTC2983_MAX_CHANNELS_NR) {
-			dev_err(dev,
-				"chan:%d must be from 1 to 20\n", sensor.chan);
-			return -EINVAL;
+			ret = -EINVAL;
+			dev_err(dev, "chan:%d must be from %u to %u\n", sensor.chan,
+				LTC2983_MIN_CHANNELS_NR, LTC2983_MAX_CHANNELS_NR);
+			goto put_child;
 		} else if (channel_avail_mask & BIT(sensor.chan)) {
+			ret = -EINVAL;
 			dev_err(dev, "chan:%d already in use\n", sensor.chan);
-			return -EINVAL;
+			goto put_child;
 		}
 
-		ret = of_property_read_u32(child, "adi,sensor-type",
-					       &sensor.type);
+		ret = fwnode_property_read_u32(child, "adi,sensor-type", &sensor.type);
 		if (ret) {
 			dev_err(dev,
 				"adi,sensor-type property must given for child nodes\n");
-			return ret;
+			goto put_child;
 		}
 
 		dev_dbg(dev, "Create new sensor, type %u, chann %u",
@@ -1334,13 +1347,15 @@ static int ltc2983_parse_dt(struct ltc2983_data *st)
 			st->sensors[chan] = ltc2983_adc_new(child, st, &sensor);
 		} else {
 			dev_err(dev, "Unknown sensor type %d\n", sensor.type);
-			return -EINVAL;
+			ret = -EINVAL;
+			goto put_child;
 		}
 
 		if (IS_ERR(st->sensors[chan])) {
 			dev_err(dev, "Failed to create sensor %ld",
 				PTR_ERR(st->sensors[chan]));
-			return PTR_ERR(st->sensors[chan]);
+			ret = PTR_ERR(st->sensors[chan]);
+			goto put_child;
 		}
 		/* set generic sensor parameters */
 		st->sensors[chan]->chan = sensor.chan;
@@ -1351,30 +1366,25 @@ static int ltc2983_parse_dt(struct ltc2983_data *st)
 	}
 
 	return 0;
+put_child:
+	fwnode_handle_put(child);
+	return ret;
 }
 
 static int ltc2983_setup(struct ltc2983_data *st, bool assign_iio)
 {
-	u32 iio_chan_t = 0, iio_chan_v = 0, chan, iio_idx = 0;
+	u32 iio_chan_t = 0, iio_chan_v = 0, chan, iio_idx = 0, status;
 	int ret;
-	unsigned long time;
 
-	/* make sure the device is up */
-	time = wait_for_completion_timeout(&st->completion,
-					    msecs_to_jiffies(250));
-
-	if (!time) {
+	/* make sure the device is up: start bit (7) is 0 and done bit (6) is 1 */
+	ret = regmap_read_poll_timeout(st->regmap, LTC2983_STATUS_REG, status,
+				       LTC2983_STATUS_UP(status) == 1, 25000,
+				       25000 * 10);
+	if (ret) {
 		dev_err(&st->spi->dev, "Device startup timed out\n");
-		return -ETIMEDOUT;
+		return ret;
 	}
 
-	st->iio_chan = devm_kzalloc(&st->spi->dev,
-				    st->iio_channels * sizeof(*st->iio_chan),
-				    GFP_KERNEL);
-
-	if (!st->iio_chan)
-		return -ENOMEM;
-
 	ret = regmap_update_bits(st->regmap, LTC2983_GLOBAL_CONFIG_REG,
 				 LTC2983_NOTCH_FREQ_MASK,
 				 LTC2983_NOTCH_FREQ(st->filter_notch_freq));
@@ -1462,6 +1472,7 @@ static int ltc2983_probe(struct spi_device *spi)
 {
 	struct ltc2983_data *st;
 	struct iio_dev *indio_dev;
+	struct gpio_desc *gpio;
 	const char *name = spi_get_device_id(spi)->name;
 	int ret;
 
@@ -1485,10 +1496,27 @@ static int ltc2983_probe(struct spi_device *spi)
 	ret = ltc2983_parse_dt(st);
 	if (ret)
 		return ret;
-	/*
-	 * let's request the irq now so it is used to sync the device
-	 * startup in ltc2983_setup()
-	 */
+
+	gpio = devm_gpiod_get_optional(&st->spi->dev, "reset", GPIOD_OUT_HIGH);
+	if (IS_ERR(gpio))
+		return PTR_ERR(gpio);
+
+	if (gpio) {
+		/* bring the device out of reset */
+		usleep_range(1000, 1200);
+		gpiod_set_value_cansleep(gpio, 0);
+	}
+
+	st->iio_chan = devm_kzalloc(&spi->dev,
+				    st->iio_channels * sizeof(*st->iio_chan),
+				    GFP_KERNEL);
+	if (!st->iio_chan)
+		return -ENOMEM;
+
+	ret = ltc2983_setup(st, true);
+	if (ret)
+		return ret;
+
 	ret = devm_request_irq(&spi->dev, spi->irq, ltc2983_irq_handler,
 			       IRQF_TRIGGER_RISING, name, st);
 	if (ret) {
@@ -1496,11 +1524,6 @@ static int ltc2983_probe(struct spi_device *spi)
 		return ret;
 	}
 
-	ret = ltc2983_setup(st, true);
-	if (ret)
-		return ret;
-
-	indio_dev->dev.parent = &spi->dev;
 	indio_dev->name = name;
 	indio_dev->num_channels = st->iio_channels;
 	indio_dev->channels = st->iio_chan;
@@ -1510,7 +1533,7 @@ static int ltc2983_probe(struct spi_device *spi)
 	return devm_iio_device_register(&spi->dev, indio_dev);
 }
 
-static int __maybe_unused ltc2983_resume(struct device *dev)
+static int ltc2983_resume(struct device *dev)
 {
 	struct ltc2983_data *st = spi_get_drvdata(to_spi_device(dev));
 	int dummy;
@@ -1521,14 +1544,15 @@ static int __maybe_unused ltc2983_resume(struct device *dev)
 	return ltc2983_setup(st, false);
 }
 
-static int __maybe_unused ltc2983_suspend(struct device *dev)
+static int ltc2983_suspend(struct device *dev)
 {
 	struct ltc2983_data *st = spi_get_drvdata(to_spi_device(dev));
 
 	return regmap_write(st->regmap, LTC2983_STATUS_REG, LTC2983_SLEEP);
 }
 
-static SIMPLE_DEV_PM_OPS(ltc2983_pm_ops, ltc2983_suspend, ltc2983_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(ltc2983_pm_ops, ltc2983_suspend,
+				ltc2983_resume);
 
 static const struct spi_device_id ltc2983_id_table[] = {
 	{ "ltc2983" },
@@ -1546,7 +1570,7 @@ static struct spi_driver ltc2983_driver = {
 	.driver = {
 		.name = "ltc2983",
 		.of_match_table = ltc2983_of_match,
-		.pm = &ltc2983_pm_ops,
+		.pm = pm_sleep_ptr(&ltc2983_pm_ops),
 	},
 	.probe = ltc2983_probe,
 	.id_table = ltc2983_id_table,
diff --git a/drivers/iio/temperature/max31856.c b/drivers/iio/temperature/max31856.c
index b4cb21ab2e85..8307aae2cb45 100644
--- a/drivers/iio/temperature/max31856.c
+++ b/drivers/iio/temperature/max31856.c
@@ -7,13 +7,16 @@
  */
 
 #include <linux/ctype.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/err.h>
+#include <linux/property.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
 #include <linux/util_macros.h>
+#include <asm/unaligned.h>
 #include <dt-bindings/iio/temperature/thermocouple.h>
 /*
  * The MSB of the register value determines whether the following byte will
@@ -168,7 +171,7 @@ static int max31856_thermocouple_read(struct max31856_data *data,
 		if (ret)
 			return ret;
 		/* Skip last 5 dead bits of LTCBL */
-		*val = (reg_val[0] << 16 | reg_val[1] << 8 | reg_val[2]) >> 5;
+		*val = get_unaligned_be24(&reg_val[0]) >> 5;
 		/* Check 7th bit of LTCBH reg. value for sign*/
 		if (reg_val[0] & 0x80)
 			*val -= 0x80000;
@@ -185,7 +188,7 @@ static int max31856_thermocouple_read(struct max31856_data *data,
 		/* Get Cold Junction Temp. offset register value */
 		offset_cjto = reg_val[0];
 		/* Get CJTH and CJTL value and skip last 2 dead bits of CJTL */
-		*val = (reg_val[1] << 8 | reg_val[2]) >> 2;
+		*val = get_unaligned_be16(&reg_val[1]) >> 2;
 		/* As per datasheet add offset into CJTH and CJTL */
 		*val += offset_cjto;
 		/* Check 7th bit of CJTH reg. value for sign */
@@ -319,7 +322,7 @@ static ssize_t show_fault(struct device *dev, u8 faultbit, char *buf)
 
 	fault = reg_val & faultbit;
 
-	return sprintf(buf, "%d\n", fault);
+	return sysfs_emit(buf, "%d\n", fault);
 }
 
 static ssize_t show_fault_ovuv(struct device *dev,
@@ -343,7 +346,7 @@ static ssize_t show_filter(struct device *dev,
 	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
 	struct max31856_data *data = iio_priv(indio_dev);
 
-	return sprintf(buf, "%d\n", data->filter_50hz ? 50 : 60);
+	return sysfs_emit(buf, "%d\n", data->filter_50hz ? 50 : 60);
 }
 
 static ssize_t set_filter(struct device *dev,
@@ -416,16 +419,12 @@ static int max31856_probe(struct spi_device *spi)
 	spi_set_drvdata(spi, indio_dev);
 
 	indio_dev->info = &max31856_info;
-	indio_dev->dev.parent = &spi->dev;
-	indio_dev->dev.of_node = spi->dev.of_node;
 	indio_dev->name = id->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = max31856_channels;
 	indio_dev->num_channels = ARRAY_SIZE(max31856_channels);
 
-	ret = of_property_read_u32(spi->dev.of_node, "thermocouple-type",
-				   &data->thermocouple_type);
-
+	ret = device_property_read_u32(&spi->dev, "thermocouple-type", &data->thermocouple_type);
 	if (ret) {
 		dev_info(&spi->dev,
 			 "Could not read thermocouple type DT property, configuring as a K-Type\n");
diff --git a/drivers/iio/temperature/max31865.c b/drivers/iio/temperature/max31865.c
new file mode 100644
index 000000000000..29e23652ba5a
--- /dev/null
+++ b/drivers/iio/temperature/max31865.c
@@ -0,0 +1,351 @@
+// SPDX-License-Identifier: GPL-2.0-only
+
+/*
+ * Copyright (c) Linumiz 2021
+ *
+ * max31865.c - Maxim MAX31865 RTD-to-Digital Converter sensor driver
+ *
+ * Author: Navin Sankar Velliangiri <navin@linumiz.com>
+ */
+
+#include <linux/ctype.h>
+#include <linux/delay.h>
+#include <linux/err.h>
+#include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
+#include <linux/iio/iio.h>
+#include <linux/iio/sysfs.h>
+#include <linux/property.h>
+#include <linux/spi/spi.h>
+#include <asm/unaligned.h>
+
+/*
+ * The MSB of the register value determines whether the following byte will
+ * be written or read. If it is 0, read will follow and if it is 1, write
+ * will follow.
+ */
+#define MAX31865_RD_WR_BIT			BIT(7)
+
+#define MAX31865_CFG_VBIAS			BIT(7)
+#define MAX31865_CFG_1SHOT			BIT(5)
+#define MAX31865_3WIRE_RTD			BIT(4)
+#define MAX31865_FAULT_STATUS_CLEAR		BIT(1)
+#define MAX31865_FILTER_50HZ			BIT(0)
+
+/* The MAX31865 registers */
+#define MAX31865_CFG_REG			0x00
+#define MAX31865_RTD_MSB			0x01
+#define MAX31865_FAULT_STATUS			0x07
+
+#define MAX31865_FAULT_OVUV			BIT(2)
+
+static const char max31865_show_samp_freq[] = "50 60";
+
+static const struct iio_chan_spec max31865_channels[] = {
+	{	/* RTD Temperature */
+		.type = IIO_TEMP,
+		.info_mask_separate =
+			BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE)
+	},
+};
+
+struct max31865_data {
+	struct spi_device *spi;
+	struct mutex lock;
+	bool filter_50hz;
+	bool three_wire;
+	u8 buf[2] __aligned(IIO_DMA_MINALIGN);
+};
+
+static int max31865_read(struct max31865_data *data, u8 reg,
+			 unsigned int read_size)
+{
+	return spi_write_then_read(data->spi, &reg, 1, data->buf, read_size);
+}
+
+static int max31865_write(struct max31865_data *data, size_t len)
+{
+	return spi_write(data->spi, data->buf, len);
+}
+
+static int enable_bias(struct max31865_data *data)
+{
+	u8 cfg;
+	int ret;
+
+	ret = max31865_read(data, MAX31865_CFG_REG, 1);
+	if (ret)
+		return ret;
+
+	cfg = data->buf[0];
+
+	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
+	data->buf[1] = cfg | MAX31865_CFG_VBIAS;
+
+	return max31865_write(data, 2);
+}
+
+static int disable_bias(struct max31865_data *data)
+{
+	u8 cfg;
+	int ret;
+
+	ret = max31865_read(data, MAX31865_CFG_REG, 1);
+	if (ret)
+		return ret;
+
+	cfg = data->buf[0];
+	cfg &= ~MAX31865_CFG_VBIAS;
+
+	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
+	data->buf[1] = cfg;
+
+	return max31865_write(data, 2);
+}
+
+static int max31865_rtd_read(struct max31865_data *data, int *val)
+{
+	u8 reg;
+	int ret;
+
+	/* Enable BIAS to start the conversion */
+	ret = enable_bias(data);
+	if (ret)
+		return ret;
+
+	/* wait 10.5ms before initiating the conversion */
+	msleep(11);
+
+	ret = max31865_read(data, MAX31865_CFG_REG, 1);
+	if (ret)
+		return ret;
+
+	reg = data->buf[0];
+	reg |= MAX31865_CFG_1SHOT | MAX31865_FAULT_STATUS_CLEAR;
+	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
+	data->buf[1] = reg;
+
+	ret = max31865_write(data, 2);
+	if (ret)
+		return ret;
+
+	if (data->filter_50hz) {
+		/* 50Hz filter mode requires 62.5ms to complete */
+		msleep(63);
+	} else {
+		/* 60Hz filter mode requires 52ms to complete */
+		msleep(52);
+	}
+
+	ret = max31865_read(data, MAX31865_RTD_MSB, 2);
+	if (ret)
+		return ret;
+
+	*val = get_unaligned_be16(&data->buf) >> 1;
+
+	return disable_bias(data);
+}
+
+static int max31865_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val, int *val2, long mask)
+{
+	struct max31865_data *data = iio_priv(indio_dev);
+	int ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		mutex_lock(&data->lock);
+		ret = max31865_rtd_read(data, val);
+		mutex_unlock(&data->lock);
+		if (ret)
+			return ret;
+		return IIO_VAL_INT;
+	case IIO_CHAN_INFO_SCALE:
+		/* Temp. Data resolution is 0.03125 degree centigrade */
+		*val = 31;
+		*val2 = 250000; /* 1000 * 0.03125 */
+		return IIO_VAL_INT_PLUS_MICRO;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int max31865_init(struct max31865_data *data)
+{
+	u8 cfg;
+	int ret;
+
+	ret = max31865_read(data, MAX31865_CFG_REG, 1);
+	if (ret)
+		return ret;
+
+	cfg = data->buf[0];
+
+	if (data->three_wire)
+		/* 3-wire RTD connection */
+		cfg |= MAX31865_3WIRE_RTD;
+
+	if (data->filter_50hz)
+		/* 50Hz noise rejection filter */
+		cfg |= MAX31865_FILTER_50HZ;
+
+	data->buf[0] = MAX31865_CFG_REG | MAX31865_RD_WR_BIT;
+	data->buf[1] = cfg;
+
+	return max31865_write(data, 2);
+}
+
+static ssize_t show_fault(struct device *dev, u8 faultbit, char *buf)
+{
+	int ret;
+	bool fault;
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct max31865_data *data = iio_priv(indio_dev);
+
+	ret = max31865_read(data, MAX31865_FAULT_STATUS, 1);
+	if (ret)
+		return ret;
+
+	fault = data->buf[0] & faultbit;
+
+	return sysfs_emit(buf, "%d\n", fault);
+}
+
+static ssize_t show_fault_ovuv(struct device *dev,
+			      struct device_attribute *attr,
+			      char *buf)
+{
+	return show_fault(dev, MAX31865_FAULT_OVUV, buf);
+}
+
+static ssize_t show_filter(struct device *dev,
+			   struct device_attribute *attr,
+			   char *buf)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct max31865_data *data = iio_priv(indio_dev);
+
+	return sysfs_emit(buf, "%d\n", data->filter_50hz ? 50 : 60);
+}
+
+static ssize_t set_filter(struct device *dev,
+			  struct device_attribute *attr,
+			  const char *buf,
+			  size_t len)
+{
+	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
+	struct max31865_data *data = iio_priv(indio_dev);
+	unsigned int freq;
+	int ret;
+
+	ret = kstrtouint(buf, 10, &freq);
+	if (ret)
+		return ret;
+
+	switch (freq) {
+	case 50:
+		data->filter_50hz = true;
+		break;
+	case 60:
+		data->filter_50hz = false;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	mutex_lock(&data->lock);
+	ret = max31865_init(data);
+	mutex_unlock(&data->lock);
+	if (ret)
+		return ret;
+
+	return len;
+}
+
+static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(max31865_show_samp_freq);
+static IIO_DEVICE_ATTR(fault_ovuv, 0444, show_fault_ovuv, NULL, 0);
+static IIO_DEVICE_ATTR(in_filter_notch_center_frequency, 0644,
+		    show_filter, set_filter, 0);
+
+static struct attribute *max31865_attributes[] = {
+	&iio_dev_attr_fault_ovuv.dev_attr.attr,
+	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
+	&iio_dev_attr_in_filter_notch_center_frequency.dev_attr.attr,
+	NULL,
+};
+
+static const struct attribute_group max31865_group = {
+	.attrs = max31865_attributes,
+};
+
+static const struct iio_info max31865_info = {
+	.read_raw = max31865_read_raw,
+	.attrs = &max31865_group,
+};
+
+static int max31865_probe(struct spi_device *spi)
+{
+	const struct spi_device_id *id = spi_get_device_id(spi);
+	struct iio_dev *indio_dev;
+	struct max31865_data *data;
+	int ret;
+
+	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->spi = spi;
+	data->filter_50hz = false;
+	mutex_init(&data->lock);
+
+	indio_dev->info = &max31865_info;
+	indio_dev->name = id->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = max31865_channels;
+	indio_dev->num_channels = ARRAY_SIZE(max31865_channels);
+
+	if (device_property_read_bool(&spi->dev, "maxim,3-wire")) {
+		/* select 3 wire */
+		data->three_wire = 1;
+	} else {
+		/* select 2 or 4 wire */
+		data->three_wire = 0;
+	}
+
+	ret = max31865_init(data);
+	if (ret) {
+		dev_err(&spi->dev, "error: Failed to configure max31865\n");
+		return ret;
+	}
+
+	return devm_iio_device_register(&spi->dev, indio_dev);
+}
+
+static const struct spi_device_id max31865_id[] = {
+	{ "max31865", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(spi, max31865_id);
+
+static const struct of_device_id max31865_of_match[] = {
+	{ .compatible = "maxim,max31865" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, max31865_of_match);
+
+static struct spi_driver max31865_driver = {
+	.driver = {
+		.name	= "max31865",
+		.of_match_table = max31865_of_match,
+	},
+	.probe = max31865_probe,
+	.id_table = max31865_id,
+};
+module_spi_driver(max31865_driver);
+
+MODULE_AUTHOR("Navin Sankar Velliangiri <navin@linumiz.com>");
+MODULE_DESCRIPTION("Maxim MAX31865 RTD-to-Digital Converter sensor driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/temperature/maxim_thermocouple.c b/drivers/iio/temperature/maxim_thermocouple.c
index 8d21116c7a22..c28a7a6dea5f 100644
--- a/drivers/iio/temperature/maxim_thermocouple.c
+++ b/drivers/iio/temperature/maxim_thermocouple.c
@@ -6,12 +6,11 @@
  * Author: <matt.ranostay@konsulko.com>
  */
 
-#include <linux/module.h>
 #include <linux/init.h>
+#include <linux/mod_devicetable.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
-#include <linux/of.h>
-#include <linux/of_device.h>
 #include <linux/spi/spi.h>
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -123,7 +122,7 @@ struct maxim_thermocouple_data {
 	struct spi_device *spi;
 	const struct maxim_thermocouple_chip *chip;
 
-	u8 buffer[16] ____cacheline_aligned;
+	u8 buffer[16] __aligned(IIO_DMA_MINALIGN);
 	char tc_type;
 };
 
@@ -244,7 +243,6 @@ static int maxim_thermocouple_probe(struct spi_device *spi)
 	indio_dev->available_scan_masks = chip->scan_masks;
 	indio_dev->num_channels = chip->num_channels;
 	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->dev.parent = &spi->dev;
 
 	data = iio_priv(indio_dev);
 	data->spi = spi;
diff --git a/drivers/iio/temperature/mlx90614.c b/drivers/iio/temperature/mlx90614.c
index b7c56ddf884f..8eb0f962ed25 100644
--- a/drivers/iio/temperature/mlx90614.c
+++ b/drivers/iio/temperature/mlx90614.c
@@ -79,16 +79,15 @@ struct mlx90614_data {
 
 /* Bandwidth values for IIR filtering */
 static const int mlx90614_iir_values[] = {77, 31, 20, 15, 723, 153, 110, 86};
-static IIO_CONST_ATTR(in_temp_object_filter_low_pass_3db_frequency_available,
-		      "0.15 0.20 0.31 0.77 0.86 1.10 1.53 7.23");
-
-static struct attribute *mlx90614_attributes[] = {
-	&iio_const_attr_in_temp_object_filter_low_pass_3db_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group mlx90614_attr_group = {
-	.attrs = mlx90614_attributes,
+static const int mlx90614_freqs[][2] = {
+	{0, 150000},
+	{0, 200000},
+	{0, 310000},
+	{0, 770000},
+	{0, 860000},
+	{1, 100000},
+	{1, 530000},
+	{7, 230000}
 };
 
 /*
@@ -176,11 +175,14 @@ static inline s32 mlx90614_iir_search(const struct i2c_client *client,
 static int mlx90614_power_get(struct mlx90614_data *data, bool startup)
 {
 	unsigned long now;
+	int ret;
 
 	if (!data->wakeup_gpio)
 		return 0;
 
-	pm_runtime_get_sync(&data->client->dev);
+	ret = pm_runtime_resume_and_get(&data->client->dev);
+	if (ret < 0)
+		return ret;
 
 	if (startup) {
 		now = jiffies;
@@ -267,7 +269,10 @@ static int mlx90614_read_raw(struct iio_dev *indio_dev,
 		*val = MLX90614_CONST_SCALE;
 		return IIO_VAL_INT;
 	case IIO_CHAN_INFO_CALIBEMISSIVITY: /* 1/65535 / LSB */
-		mlx90614_power_get(data, false);
+		ret = mlx90614_power_get(data, false);
+		if (ret < 0)
+			return ret;
+
 		mutex_lock(&data->lock);
 		ret = i2c_smbus_read_word_data(data->client,
 					       MLX90614_EMISSIVITY);
@@ -287,7 +292,10 @@ static int mlx90614_read_raw(struct iio_dev *indio_dev,
 		return IIO_VAL_INT_PLUS_NANO;
 	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY: /* IIR setting with
 							     FIR = 1024 */
-		mlx90614_power_get(data, false);
+		ret = mlx90614_power_get(data, false);
+		if (ret < 0)
+			return ret;
+
 		mutex_lock(&data->lock);
 		ret = i2c_smbus_read_word_data(data->client, MLX90614_CONFIG);
 		mutex_unlock(&data->lock);
@@ -319,7 +327,10 @@ static int mlx90614_write_raw(struct iio_dev *indio_dev,
 		val = val * MLX90614_CONST_RAW_EMISSIVITY_MAX +
 			val2 / MLX90614_CONST_EMISSIVITY_RESOLUTION;
 
-		mlx90614_power_get(data, false);
+		ret = mlx90614_power_get(data, false);
+		if (ret < 0)
+			return ret;
+
 		mutex_lock(&data->lock);
 		ret = mlx90614_write_word(data->client, MLX90614_EMISSIVITY,
 					  val);
@@ -331,7 +342,10 @@ static int mlx90614_write_raw(struct iio_dev *indio_dev,
 		if (val < 0 || val2 < 0)
 			return -EINVAL;
 
-		mlx90614_power_get(data, false);
+		ret = mlx90614_power_get(data, false);
+		if (ret < 0)
+			return ret;
+
 		mutex_lock(&data->lock);
 		ret = mlx90614_iir_search(data->client,
 					  val * 100 + val2 / 10000);
@@ -358,6 +372,22 @@ static int mlx90614_write_raw_get_fmt(struct iio_dev *indio_dev,
 	}
 }
 
+static int mlx90614_read_avail(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       const int **vals, int *type, int *length,
+			       long mask)
+{
+	switch (mask) {
+	case IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY:
+		*vals = (int *)mlx90614_freqs;
+		*type = IIO_VAL_INT_PLUS_MICRO;
+		*length = 2 * ARRAY_SIZE(mlx90614_freqs);
+		return IIO_AVAIL_LIST;
+	default:
+		return -EINVAL;
+	}
+}
+
 static const struct iio_chan_spec mlx90614_channels[] = {
 	{
 		.type = IIO_TEMP,
@@ -374,6 +404,8 @@ static const struct iio_chan_spec mlx90614_channels[] = {
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 		    BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) |
 			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		.info_mask_separate_available =
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
 		    BIT(IIO_CHAN_INFO_SCALE),
 	},
@@ -386,6 +418,8 @@ static const struct iio_chan_spec mlx90614_channels[] = {
 		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
 		    BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) |
 			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
+		.info_mask_separate_available =
+			BIT(IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY),
 		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_OFFSET) |
 		    BIT(IIO_CHAN_INFO_SCALE),
 	},
@@ -395,7 +429,7 @@ static const struct iio_info mlx90614_info = {
 	.read_raw = mlx90614_read_raw,
 	.write_raw = mlx90614_write_raw,
 	.write_raw_get_fmt = mlx90614_write_raw_get_fmt,
-	.attrs = &mlx90614_attr_group,
+	.read_avail = mlx90614_read_avail,
 };
 
 #ifdef CONFIG_PM
@@ -525,7 +559,6 @@ static int mlx90614_probe(struct i2c_client *client,
 
 	mlx90614_wakeup(data);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &mlx90614_info;
@@ -557,7 +590,7 @@ static int mlx90614_probe(struct i2c_client *client,
 	return iio_device_register(indio_dev);
 }
 
-static int mlx90614_remove(struct i2c_client *client)
+static void mlx90614_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mlx90614_data *data = iio_priv(indio_dev);
@@ -570,8 +603,6 @@ static int mlx90614_remove(struct i2c_client *client)
 			mlx90614_sleep(data);
 		pm_runtime_set_suspended(&client->dev);
 	}
-
-	return 0;
 }
 
 static const struct i2c_device_id mlx90614_id[] = {
@@ -586,7 +617,6 @@ static const struct of_device_id mlx90614_of_match[] = {
 };
 MODULE_DEVICE_TABLE(of, mlx90614_of_match);
 
-#ifdef CONFIG_PM_SLEEP
 static int mlx90614_pm_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -616,9 +646,7 @@ static int mlx90614_pm_resume(struct device *dev)
 
 	return 0;
 }
-#endif
 
-#ifdef CONFIG_PM
 static int mlx90614_pm_runtime_suspend(struct device *dev)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
@@ -634,19 +662,18 @@ static int mlx90614_pm_runtime_resume(struct device *dev)
 
 	return mlx90614_wakeup(data);
 }
-#endif
 
 static const struct dev_pm_ops mlx90614_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(mlx90614_pm_suspend, mlx90614_pm_resume)
-	SET_RUNTIME_PM_OPS(mlx90614_pm_runtime_suspend,
-			   mlx90614_pm_runtime_resume, NULL)
+	SYSTEM_SLEEP_PM_OPS(mlx90614_pm_suspend, mlx90614_pm_resume)
+	RUNTIME_PM_OPS(mlx90614_pm_runtime_suspend,
+		       mlx90614_pm_runtime_resume, NULL)
 };
 
 static struct i2c_driver mlx90614_driver = {
 	.driver = {
 		.name	= "mlx90614",
 		.of_match_table = mlx90614_of_match,
-		.pm	= &mlx90614_pm_ops,
+		.pm	= pm_ptr(&mlx90614_pm_ops),
 	},
 	.probe = mlx90614_probe,
 	.remove = mlx90614_remove,
diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c
index eaca6ba06864..f6dec0e5f097 100644
--- a/drivers/iio/temperature/mlx90632.c
+++ b/drivers/iio/temperature/mlx90632.c
@@ -10,12 +10,15 @@
 #include <linux/err.h>
 #include <linux/gpio/consumer.h>
 #include <linux/i2c.h>
+#include <linux/iopoll.h>
 #include <linux/kernel.h>
+#include <linux/limits.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/math64.h>
-#include <linux/of.h>
 #include <linux/pm_runtime.h>
 #include <linux/regmap.h>
+#include <linux/regulator/consumer.h>
 
 #include <linux/iio/iio.h>
 #include <linux/iio/sysfs.h>
@@ -58,6 +61,8 @@
 /* Control register address - volatile */
 #define MLX90632_REG_CONTROL	0x3001 /* Control Register address */
 #define   MLX90632_CFG_PWR_MASK		GENMASK(2, 1) /* PowerMode Mask */
+#define   MLX90632_CFG_MTYP_MASK		GENMASK(8, 4) /* Meas select Mask */
+
 /* PowerModes statuses */
 #define MLX90632_PWR_STATUS(ctrl_val) (ctrl_val << 1)
 #define MLX90632_PWR_STATUS_HALT MLX90632_PWR_STATUS(0) /* hold */
@@ -65,6 +70,18 @@
 #define MLX90632_PWR_STATUS_STEP MLX90632_PWR_STATUS(2) /* step */
 #define MLX90632_PWR_STATUS_CONTINUOUS MLX90632_PWR_STATUS(3) /* continuous*/
 
+/* Measurement types */
+#define MLX90632_MTYP_MEDICAL 0
+#define MLX90632_MTYP_EXTENDED 17
+
+/* Measurement type select*/
+#define MLX90632_MTYP_STATUS(ctrl_val) (ctrl_val << 4)
+#define MLX90632_MTYP_STATUS_MEDICAL MLX90632_MTYP_STATUS(MLX90632_MTYP_MEDICAL)
+#define MLX90632_MTYP_STATUS_EXTENDED MLX90632_MTYP_STATUS(MLX90632_MTYP_EXTENDED)
+
+/* I2C command register - volatile */
+#define MLX90632_REG_I2C_CMD    0x3005 /* I2C command Register address */
+
 /* Device status register - volatile */
 #define MLX90632_REG_STATUS	0x3fff /* Device status register */
 #define   MLX90632_STAT_BUSY		BIT(10) /* Device busy indicator */
@@ -78,26 +95,55 @@
 #define MLX90632_RAM_2(meas_num)	(MLX90632_ADDR_RAM + 3 * meas_num + 1)
 #define MLX90632_RAM_3(meas_num)	(MLX90632_ADDR_RAM + 3 * meas_num + 2)
 
+/* Name important RAM_MEAS channels */
+#define MLX90632_RAM_DSP5_EXTENDED_AMBIENT_1 MLX90632_RAM_3(17)
+#define MLX90632_RAM_DSP5_EXTENDED_AMBIENT_2 MLX90632_RAM_3(18)
+#define MLX90632_RAM_DSP5_EXTENDED_OBJECT_1 MLX90632_RAM_1(17)
+#define MLX90632_RAM_DSP5_EXTENDED_OBJECT_2 MLX90632_RAM_2(17)
+#define MLX90632_RAM_DSP5_EXTENDED_OBJECT_3 MLX90632_RAM_1(18)
+#define MLX90632_RAM_DSP5_EXTENDED_OBJECT_4 MLX90632_RAM_2(18)
+#define MLX90632_RAM_DSP5_EXTENDED_OBJECT_5 MLX90632_RAM_1(19)
+#define MLX90632_RAM_DSP5_EXTENDED_OBJECT_6 MLX90632_RAM_2(19)
+
 /* Magic constants */
 #define MLX90632_ID_MEDICAL	0x0105 /* EEPROM DSPv5 Medical device id */
 #define MLX90632_ID_CONSUMER	0x0205 /* EEPROM DSPv5 Consumer device id */
+#define MLX90632_ID_EXTENDED	0x0505 /* EEPROM DSPv5 Extended range device id */
+#define MLX90632_ID_MASK	GENMASK(14, 0) /* DSP version and device ID in EE_VERSION */
 #define MLX90632_DSP_VERSION	5 /* DSP version */
 #define MLX90632_DSP_MASK	GENMASK(7, 0) /* DSP version in EE_VERSION */
 #define MLX90632_RESET_CMD	0x0006 /* Reset sensor (address or global) */
-#define MLX90632_REF_12		12LL /**< ResCtrlRef value of Ch 1 or Ch 2 */
-#define MLX90632_REF_3		12LL /**< ResCtrlRef value of Channel 3 */
-#define MLX90632_MAX_MEAS_NUM	31 /**< Maximum measurements in list */
-#define MLX90632_SLEEP_DELAY_MS 3000 /**< Autosleep delay */
+#define MLX90632_REF_12 	12LL /* ResCtrlRef value of Ch 1 or Ch 2 */
+#define MLX90632_REF_3		12LL /* ResCtrlRef value of Channel 3 */
+#define MLX90632_MAX_MEAS_NUM	31 /* Maximum measurements in list */
+#define MLX90632_SLEEP_DELAY_MS 3000 /* Autosleep delay */
+#define MLX90632_EXTENDED_LIMIT 27000 /* Extended mode raw value limit */
 
+/**
+ * struct mlx90632_data - private data for the MLX90632 device
+ * @client: I2C client of the device
+ * @lock: Internal mutex for multiple reads for single measurement
+ * @regmap: Regmap of the device
+ * @emissivity: Object emissivity from 0 to 1000 where 1000 = 1.
+ * @mtyp: Measurement type physical sensor configuration for extended range
+ *        calculations
+ * @object_ambient_temperature: Ambient temperature at object (might differ of
+ *                              the ambient temperature of sensor.
+ * @regulator: Regulator of the device
+ */
 struct mlx90632_data {
 	struct i2c_client *client;
-	struct mutex lock; /* Multiple reads for single measurement */
+	struct mutex lock;
 	struct regmap *regmap;
 	u16 emissivity;
+	u8 mtyp;
+	u32 object_ambient_temperature;
+	struct regulator *regulator;
 };
 
 static const struct regmap_range mlx90632_volatile_reg_range[] = {
 	regmap_reg_range(MLX90632_REG_I2C_ADDR, MLX90632_REG_CONTROL),
+	regmap_reg_range(MLX90632_REG_I2C_CMD, MLX90632_REG_I2C_CMD),
 	regmap_reg_range(MLX90632_REG_STATUS, MLX90632_REG_STATUS),
 	regmap_reg_range(MLX90632_RAM_1(0),
 			 MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)),
@@ -113,6 +159,7 @@ static const struct regmap_range mlx90632_read_reg_range[] = {
 	regmap_reg_range(MLX90632_EE_CTRL, MLX90632_EE_I2C_ADDR),
 	regmap_reg_range(MLX90632_EE_Ha, MLX90632_EE_Hb),
 	regmap_reg_range(MLX90632_REG_I2C_ADDR, MLX90632_REG_CONTROL),
+	regmap_reg_range(MLX90632_REG_I2C_CMD, MLX90632_REG_I2C_CMD),
 	regmap_reg_range(MLX90632_REG_STATUS, MLX90632_REG_STATUS),
 	regmap_reg_range(MLX90632_RAM_1(0),
 			 MLX90632_RAM_3(MLX90632_MAX_MEAS_NUM)),
@@ -164,8 +211,17 @@ static s32 mlx90632_pwr_continuous(struct regmap *regmap)
 }
 
 /**
- * mlx90632_perform_measurement - Trigger and retrieve current measurement cycle
- * @*data: pointer to mlx90632_data object containing regmap information
+ * mlx90632_reset_delay() - Give the mlx90632 some time to reset properly
+ * If this is not done, the following I2C command(s) will not be accepted.
+ */
+static void mlx90632_reset_delay(void)
+{
+	usleep_range(150, 200);
+}
+
+/**
+ * mlx90632_perform_measurement() - Trigger and retrieve current measurement cycle
+ * @data: pointer to mlx90632_data object containing regmap information
  *
  * Perform a measurement and return latest measurement cycle position reported
  * by sensor. This is a blocking function for 500ms, as that is default sensor
@@ -173,25 +229,19 @@ static s32 mlx90632_pwr_continuous(struct regmap *regmap)
  */
 static int mlx90632_perform_measurement(struct mlx90632_data *data)
 {
-	int ret, tries = 100;
 	unsigned int reg_status;
+	int ret;
 
 	ret = regmap_update_bits(data->regmap, MLX90632_REG_STATUS,
 				 MLX90632_STAT_DATA_RDY, 0);
 	if (ret < 0)
 		return ret;
 
-	while (tries-- > 0) {
-		ret = regmap_read(data->regmap, MLX90632_REG_STATUS,
-				  &reg_status);
-		if (ret < 0)
-			return ret;
-		if (reg_status & MLX90632_STAT_DATA_RDY)
-			break;
-		usleep_range(10000, 11000);
-	}
+	ret = regmap_read_poll_timeout(data->regmap, MLX90632_REG_STATUS, reg_status,
+				       !(reg_status & MLX90632_STAT_DATA_RDY), 10000,
+				       100 * 10000);
 
-	if (tries < 0) {
+	if (ret < 0) {
 		dev_err(&data->client->dev, "data not ready");
 		return -ETIMEDOUT;
 	}
@@ -199,6 +249,28 @@ static int mlx90632_perform_measurement(struct mlx90632_data *data)
 	return (reg_status & MLX90632_STAT_CYCLE_POS) >> 2;
 }
 
+static int mlx90632_set_meas_type(struct regmap *regmap, u8 type)
+{
+	int ret;
+
+	if ((type != MLX90632_MTYP_MEDICAL) && (type != MLX90632_MTYP_EXTENDED))
+		return -EINVAL;
+
+	ret = regmap_write(regmap, MLX90632_REG_I2C_CMD, MLX90632_RESET_CMD);
+	if (ret < 0)
+		return ret;
+
+	mlx90632_reset_delay();
+
+	ret = regmap_write_bits(regmap, MLX90632_REG_CONTROL,
+				 (MLX90632_CFG_MTYP_MASK | MLX90632_CFG_PWR_MASK),
+				 (MLX90632_MTYP_STATUS(type) | MLX90632_PWR_STATUS_HALT));
+	if (ret < 0)
+		return ret;
+
+	return mlx90632_pwr_continuous(regmap);
+}
+
 static int mlx90632_channel_new_select(int perform_ret, uint8_t *channel_new,
 				       uint8_t *channel_old)
 {
@@ -300,6 +372,97 @@ read_unlock:
 	return ret;
 }
 
+static int mlx90632_read_ambient_raw_extended(struct regmap *regmap,
+					      s16 *ambient_new_raw, s16 *ambient_old_raw)
+{
+	unsigned int read_tmp;
+	int ret;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_AMBIENT_1, &read_tmp);
+	if (ret < 0)
+		return ret;
+	*ambient_new_raw = (s16)read_tmp;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_AMBIENT_2, &read_tmp);
+	if (ret < 0)
+		return ret;
+	*ambient_old_raw = (s16)read_tmp;
+
+	return 0;
+}
+
+static int mlx90632_read_object_raw_extended(struct regmap *regmap, s16 *object_new_raw)
+{
+	unsigned int read_tmp;
+	s32 read;
+	int ret;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_OBJECT_1, &read_tmp);
+	if (ret < 0)
+		return ret;
+	read = (s16)read_tmp;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_OBJECT_2, &read_tmp);
+	if (ret < 0)
+		return ret;
+	read = read - (s16)read_tmp;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_OBJECT_3, &read_tmp);
+	if (ret < 0)
+		return ret;
+	read = read - (s16)read_tmp;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_OBJECT_4, &read_tmp);
+	if (ret < 0)
+		return ret;
+	read = (read + (s16)read_tmp) / 2;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_OBJECT_5, &read_tmp);
+	if (ret < 0)
+		return ret;
+	read = read + (s16)read_tmp;
+
+	ret = regmap_read(regmap, MLX90632_RAM_DSP5_EXTENDED_OBJECT_6, &read_tmp);
+	if (ret < 0)
+		return ret;
+	read = read + (s16)read_tmp;
+
+	if (read > S16_MAX || read < S16_MIN)
+		return -ERANGE;
+
+	*object_new_raw = read;
+
+	return 0;
+}
+
+static int mlx90632_read_all_channel_extended(struct mlx90632_data *data, s16 *object_new_raw,
+					      s16 *ambient_new_raw, s16 *ambient_old_raw)
+{
+	s32 ret, meas;
+
+	mutex_lock(&data->lock);
+	ret = mlx90632_set_meas_type(data->regmap, MLX90632_MTYP_EXTENDED);
+	if (ret < 0)
+		goto read_unlock;
+
+	ret = read_poll_timeout(mlx90632_perform_measurement, meas, meas == 19,
+				50000, 800000, false, data);
+	if (ret != 0)
+		goto read_unlock;
+
+	ret = mlx90632_read_object_raw_extended(data->regmap, object_new_raw);
+	if (ret < 0)
+		goto read_unlock;
+
+	ret = mlx90632_read_ambient_raw_extended(data->regmap, ambient_new_raw, ambient_old_raw);
+
+read_unlock:
+	(void) mlx90632_set_meas_type(data->regmap, MLX90632_MTYP_MEDICAL);
+
+	mutex_unlock(&data->lock);
+	return ret;
+}
+
 static int mlx90632_read_ee_register(struct regmap *regmap, u16 reg_lsb,
 				     s32 *reg_value)
 {
@@ -354,9 +517,23 @@ static s64 mlx90632_preprocess_temp_obj(s16 object_new_raw, s16 object_old_raw,
 	return div64_s64((tmp << 19ULL), 1000LL);
 }
 
+static s64 mlx90632_preprocess_temp_obj_extended(s16 object_new_raw, s16 ambient_new_raw,
+						 s16 ambient_old_raw, s16 Ka)
+{
+	s64 VR_IR, kKa, tmp;
+
+	kKa = ((s64)Ka * 1000LL) >> 10ULL;
+	VR_IR = (s64)ambient_old_raw * 1000000LL +
+		kKa * div64_s64((s64)ambient_new_raw * 1000LL,
+				MLX90632_REF_3);
+	tmp = div64_s64(
+			div64_s64((s64) object_new_raw * 1000000000000LL, MLX90632_REF_12),
+			VR_IR);
+	return div64_s64(tmp << 19ULL, 1000LL);
+}
+
 static s32 mlx90632_calc_temp_ambient(s16 ambient_new_raw, s16 ambient_old_raw,
-				      s32 P_T, s32 P_R, s32 P_G, s32 P_O,
-				      s16 Gb)
+				      s32 P_T, s32 P_R, s32 P_G, s32 P_O, s16 Gb)
 {
 	s64 Asub, Bsub, Ablock, Bblock, Cblock, AMB, sum;
 
@@ -374,11 +551,11 @@ static s32 mlx90632_calc_temp_ambient(s16 ambient_new_raw, s16 ambient_old_raw,
 }
 
 static s32 mlx90632_calc_temp_object_iteration(s32 prev_object_temp, s64 object,
-					       s64 TAdut, s32 Fa, s32 Fb,
+					       s64 TAdut, s64 TAdut4, s32 Fa, s32 Fb,
 					       s32 Ga, s16 Ha, s16 Hb,
 					       u16 emissivity)
 {
-	s64 calcedKsTO, calcedKsTA, ir_Alpha, TAdut4, Alpha_corr;
+	s64 calcedKsTO, calcedKsTA, ir_Alpha, Alpha_corr;
 	s64 Ha_customer, Hb_customer;
 
 	Ha_customer = ((s64)Ha * 1000000LL) >> 14ULL;
@@ -393,36 +570,66 @@ static s32 mlx90632_calc_temp_object_iteration(s32 prev_object_temp, s64 object,
 	Alpha_corr = emissivity * div64_s64(Alpha_corr, 100000LL);
 	Alpha_corr = div64_s64(Alpha_corr, 1000LL);
 	ir_Alpha = div64_s64((s64)object * 10000000LL, Alpha_corr);
-	TAdut4 = (div64_s64(TAdut, 10000LL) + 27315) *
-		(div64_s64(TAdut, 10000LL) + 27315) *
-		(div64_s64(TAdut, 10000LL)  + 27315) *
-		(div64_s64(TAdut, 10000LL) + 27315);
 
 	return (int_sqrt64(int_sqrt64(ir_Alpha * 1000000000000LL + TAdut4))
 		- 27315 - Hb_customer) * 10;
 }
 
+static s64 mlx90632_calc_ta4(s64 TAdut, s64 scale)
+{
+	return (div64_s64(TAdut, scale) + 27315) *
+		(div64_s64(TAdut, scale) + 27315) *
+		(div64_s64(TAdut, scale) + 27315) *
+		(div64_s64(TAdut, scale) + 27315);
+}
+
 static s32 mlx90632_calc_temp_object(s64 object, s64 ambient, s32 Ea, s32 Eb,
 				     s32 Fa, s32 Fb, s32 Ga, s16 Ha, s16 Hb,
 				     u16 tmp_emi)
 {
-	s64 kTA, kTA0, TAdut;
+	s64 kTA, kTA0, TAdut, TAdut4;
 	s64 temp = 25000;
 	s8 i;
 
 	kTA = (Ea * 1000LL) >> 16LL;
 	kTA0 = (Eb * 1000LL) >> 8LL;
 	TAdut = div64_s64(((ambient - kTA0) * 1000000LL), kTA) + 25 * 1000000LL;
+	TAdut4 = mlx90632_calc_ta4(TAdut, 10000LL);
 
 	/* Iterations of calculation as described in datasheet */
 	for (i = 0; i < 5; ++i) {
-		temp = mlx90632_calc_temp_object_iteration(temp, object, TAdut,
+		temp = mlx90632_calc_temp_object_iteration(temp, object, TAdut, TAdut4,
 							   Fa, Fb, Ga, Ha, Hb,
 							   tmp_emi);
 	}
 	return temp;
 }
 
+static s32 mlx90632_calc_temp_object_extended(s64 object, s64 ambient, s64 reflected,
+					      s32 Ea, s32 Eb, s32 Fa, s32 Fb, s32 Ga,
+					      s16 Ha, s16 Hb, u16 tmp_emi)
+{
+	s64 kTA, kTA0, TAdut, TAdut4, Tr4, TaTr4;
+	s64 temp = 25000;
+	s8 i;
+
+	kTA = (Ea * 1000LL) >> 16LL;
+	kTA0 = (Eb * 1000LL) >> 8LL;
+	TAdut = div64_s64((ambient - kTA0) * 1000000LL, kTA) + 25 * 1000000LL;
+	Tr4 = mlx90632_calc_ta4(reflected, 10);
+	TAdut4 = mlx90632_calc_ta4(TAdut, 10000LL);
+	TaTr4 = Tr4 - div64_s64(Tr4 - TAdut4, tmp_emi) * 1000;
+
+	/* Iterations of calculation as described in datasheet */
+	for (i = 0; i < 5; ++i) {
+		temp = mlx90632_calc_temp_object_iteration(temp, object, TAdut, TaTr4,
+							   Fa / 2, Fb, Ga, Ha, Hb,
+							   tmp_emi);
+	}
+
+	return temp;
+}
+
 static int mlx90632_calc_object_dsp105(struct mlx90632_data *data, int *val)
 {
 	s32 ret;
@@ -470,6 +677,26 @@ static int mlx90632_calc_object_dsp105(struct mlx90632_data *data, int *val)
 	if (ret < 0)
 		return ret;
 
+	if (object_new_raw > MLX90632_EXTENDED_LIMIT &&
+	    data->mtyp == MLX90632_MTYP_EXTENDED) {
+		ret = mlx90632_read_all_channel_extended(data, &object_new_raw,
+							 &ambient_new_raw, &ambient_old_raw);
+		if (ret < 0)
+			return ret;
+
+		/* Use extended mode calculations */
+		ambient = mlx90632_preprocess_temp_amb(ambient_new_raw,
+						       ambient_old_raw, Gb);
+		object = mlx90632_preprocess_temp_obj_extended(object_new_raw,
+							       ambient_new_raw,
+							       ambient_old_raw, Ka);
+		*val = mlx90632_calc_temp_object_extended(object, ambient,
+							  data->object_ambient_temperature,
+							  Ea, Eb, Fa, Fb, Ga,
+							  Ha, Hb, data->emissivity);
+		return 0;
+	}
+
 	ambient = mlx90632_preprocess_temp_amb(ambient_new_raw,
 					       ambient_old_raw, Gb);
 	object = mlx90632_preprocess_temp_obj(object_new_raw,
@@ -548,7 +775,9 @@ static int mlx90632_read_raw(struct iio_dev *indio_dev,
 			*val2 = data->emissivity * 1000;
 		}
 		return IIO_VAL_INT_PLUS_MICRO;
-
+	case IIO_CHAN_INFO_CALIBAMBIENT:
+		*val = data->object_ambient_temperature;
+		return IIO_VAL_INT;
 	default:
 		return -EINVAL;
 	}
@@ -568,6 +797,9 @@ static int mlx90632_write_raw(struct iio_dev *indio_dev,
 			return -EINVAL;
 		data->emissivity = val * 1000 + val2 / 1000;
 		return 0;
+	case IIO_CHAN_INFO_CALIBAMBIENT:
+		data->object_ambient_temperature = val;
+		return 0;
 	default:
 		return -EINVAL;
 	}
@@ -585,7 +817,7 @@ static const struct iio_chan_spec mlx90632_channels[] = {
 		.modified = 1,
 		.channel2 = IIO_MOD_TEMP_OBJECT,
 		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED) |
-			BIT(IIO_CHAN_INFO_CALIBEMISSIVITY),
+			BIT(IIO_CHAN_INFO_CALIBEMISSIVITY) | BIT(IIO_CHAN_INFO_CALIBAMBIENT),
 	},
 };
 
@@ -617,6 +849,32 @@ static int mlx90632_wakeup(struct mlx90632_data *data)
 	return mlx90632_pwr_continuous(data->regmap);
 }
 
+static void mlx90632_disable_regulator(void *_data)
+{
+	struct mlx90632_data *data = _data;
+	int ret;
+
+	ret = regulator_disable(data->regulator);
+	if (ret < 0)
+		dev_err(regmap_get_device(data->regmap),
+			"Failed to disable power regulator: %d\n", ret);
+}
+
+static int mlx90632_enable_regulator(struct mlx90632_data *data)
+{
+	int ret;
+
+	ret = regulator_enable(data->regulator);
+	if (ret < 0) {
+		dev_err(regmap_get_device(data->regmap), "Failed to enable power regulator!\n");
+		return ret;
+	}
+
+	mlx90632_reset_delay();
+
+	return ret;
+}
+
 static int mlx90632_probe(struct i2c_client *client,
 			  const struct i2c_device_id *id)
 {
@@ -643,15 +901,32 @@ static int mlx90632_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	mlx90632->client = client;
 	mlx90632->regmap = regmap;
+	mlx90632->mtyp = MLX90632_MTYP_MEDICAL;
 
 	mutex_init(&mlx90632->lock);
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = id->name;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &mlx90632_info;
 	indio_dev->channels = mlx90632_channels;
 	indio_dev->num_channels = ARRAY_SIZE(mlx90632_channels);
 
+	mlx90632->regulator = devm_regulator_get(&client->dev, "vdd");
+	if (IS_ERR(mlx90632->regulator))
+		return dev_err_probe(&client->dev, PTR_ERR(mlx90632->regulator),
+				     "failed to get vdd regulator");
+
+	ret = mlx90632_enable_regulator(mlx90632);
+	if (ret < 0)
+		return ret;
+
+	ret = devm_add_action_or_reset(&client->dev, mlx90632_disable_regulator,
+				       mlx90632);
+	if (ret < 0) {
+		dev_err(&client->dev, "Failed to setup regulator cleanup action %d\n",
+			ret);
+		return ret;
+	}
+
 	ret = mlx90632_wakeup(mlx90632);
 	if (ret < 0) {
 		dev_err(&client->dev, "Wakeup failed: %d\n", ret);
@@ -663,15 +938,20 @@ static int mlx90632_probe(struct i2c_client *client,
 		dev_err(&client->dev, "read of version failed: %d\n", ret);
 		return ret;
 	}
+	read = read & MLX90632_ID_MASK;
 	if (read == MLX90632_ID_MEDICAL) {
 		dev_dbg(&client->dev,
 			"Detected Medical EEPROM calibration %x\n", read);
 	} else if (read == MLX90632_ID_CONSUMER) {
 		dev_dbg(&client->dev,
 			"Detected Consumer EEPROM calibration %x\n", read);
+	} else if (read == MLX90632_ID_EXTENDED) {
+		dev_dbg(&client->dev,
+			"Detected Extended range EEPROM calibration %x\n", read);
+		mlx90632->mtyp = MLX90632_MTYP_EXTENDED;
 	} else if ((read & MLX90632_DSP_MASK) == MLX90632_DSP_VERSION) {
 		dev_dbg(&client->dev,
-			"Detected Unknown EEPROM calibration %x\n", read);	
+			"Detected Unknown EEPROM calibration %x\n", read);
 	} else {
 		dev_err(&client->dev,
 			"Wrong DSP version %x (expected %x)\n",
@@ -680,6 +960,7 @@ static int mlx90632_probe(struct i2c_client *client,
 	}
 
 	mlx90632->emissivity = 1000;
+	mlx90632->object_ambient_temperature = 25000; /* 25 degrees milliCelsius */
 
 	pm_runtime_disable(&client->dev);
 	ret = pm_runtime_set_active(&client->dev);
@@ -694,7 +975,7 @@ static int mlx90632_probe(struct i2c_client *client,
 	return iio_device_register(indio_dev);
 }
 
-static int mlx90632_remove(struct i2c_client *client)
+static void mlx90632_remove(struct i2c_client *client)
 {
 	struct iio_dev *indio_dev = i2c_get_clientdata(client);
 	struct mlx90632_data *data = iio_priv(indio_dev);
@@ -706,8 +987,6 @@ static int mlx90632_remove(struct i2c_client *client)
 	pm_runtime_put_noidle(&client->dev);
 
 	mlx90632_sleep(data);
-
-	return 0;
 }
 
 static const struct i2c_device_id mlx90632_id[] = {
diff --git a/drivers/iio/temperature/tmp006.c b/drivers/iio/temperature/tmp006.c
index cc45d8345eb9..706a760f30b4 100644
--- a/drivers/iio/temperature/tmp006.c
+++ b/drivers/iio/temperature/tmp006.c
@@ -193,6 +193,25 @@ static bool tmp006_check_identification(struct i2c_client *client)
 	return mid == TMP006_MANUFACTURER_MAGIC && did == TMP006_DEVICE_MAGIC;
 }
 
+static int tmp006_power(struct device *dev, bool up)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
+	struct tmp006_data *data = iio_priv(indio_dev);
+
+	if (up)
+		data->config |= TMP006_CONFIG_MOD_MASK;
+	else
+		data->config &= ~TMP006_CONFIG_MOD_MASK;
+
+	return i2c_smbus_write_word_swapped(data->client, TMP006_CONFIG,
+		data->config);
+}
+
+static void tmp006_powerdown_cleanup(void *dev)
+{
+	tmp006_power(dev, false);
+}
+
 static int tmp006_probe(struct i2c_client *client,
 			 const struct i2c_device_id *id)
 {
@@ -216,7 +235,6 @@ static int tmp006_probe(struct i2c_client *client,
 	i2c_set_clientdata(client, indio_dev);
 	data->client = client;
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = dev_name(&client->dev);
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &tmp006_info;
@@ -229,42 +247,31 @@ static int tmp006_probe(struct i2c_client *client,
 		return ret;
 	data->config = ret;
 
-	return iio_device_register(indio_dev);
-}
-
-static int tmp006_powerdown(struct tmp006_data *data)
-{
-	return i2c_smbus_write_word_swapped(data->client, TMP006_CONFIG,
-		data->config & ~TMP006_CONFIG_MOD_MASK);
-}
-
-static int tmp006_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	if ((ret & TMP006_CONFIG_MOD_MASK) != TMP006_CONFIG_MOD_MASK) {
+		ret = tmp006_power(&client->dev, true);
+		if (ret < 0)
+			return ret;
+	}
 
-	iio_device_unregister(indio_dev);
-	tmp006_powerdown(iio_priv(indio_dev));
+	ret = devm_add_action_or_reset(&client->dev, tmp006_powerdown_cleanup,
+				       &client->dev);
+	if (ret < 0)
+		return ret;
 
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tmp006_suspend(struct device *dev)
 {
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	return tmp006_powerdown(iio_priv(indio_dev));
+	return tmp006_power(dev, false);
 }
 
 static int tmp006_resume(struct device *dev)
 {
-	struct tmp006_data *data = iio_priv(i2c_get_clientdata(
-		to_i2c_client(dev)));
-	return i2c_smbus_write_word_swapped(data->client, TMP006_CONFIG,
-		data->config | TMP006_CONFIG_MOD_MASK);
+	return tmp006_power(dev, true);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(tmp006_pm_ops, tmp006_suspend, tmp006_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(tmp006_pm_ops, tmp006_suspend, tmp006_resume);
 
 static const struct i2c_device_id tmp006_id[] = {
 	{ "tmp006", 0 },
@@ -275,10 +282,9 @@ MODULE_DEVICE_TABLE(i2c, tmp006_id);
 static struct i2c_driver tmp006_driver = {
 	.driver = {
 		.name	= "tmp006",
-		.pm	= &tmp006_pm_ops,
+		.pm	= pm_sleep_ptr(&tmp006_pm_ops),
 	},
 	.probe = tmp006_probe,
-	.remove = tmp006_remove,
 	.id_table = tmp006_id,
 };
 module_i2c_driver(tmp006_driver);
diff --git a/drivers/iio/temperature/tmp007.c b/drivers/iio/temperature/tmp007.c
index 7df234d96f94..f3420d8a0e35 100644
--- a/drivers/iio/temperature/tmp007.c
+++ b/drivers/iio/temperature/tmp007.c
@@ -20,7 +20,7 @@
 #include <linux/module.h>
 #include <linux/pm.h>
 #include <linux/bitops.h>
-#include <linux/of.h>
+#include <linux/mod_devicetable.h>
 #include <linux/irq.h>
 #include <linux/interrupt.h>
 
@@ -439,6 +439,13 @@ static bool tmp007_identify(struct i2c_client *client)
 	return (manf_id == TMP007_MANUFACTURER_MAGIC && dev_id == TMP007_DEVICE_MAGIC);
 }
 
+static void tmp007_powerdown_action_cb(void *priv)
+{
+	struct tmp007_data *data = priv;
+
+	tmp007_powerdown(data);
+}
+
 static int tmp007_probe(struct i2c_client *client,
 			const struct i2c_device_id *tmp007_id)
 {
@@ -463,7 +470,6 @@ static int tmp007_probe(struct i2c_client *client,
 	data->client = client;
 	mutex_init(&data->lock);
 
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->name = "tmp007";
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->info = &tmp007_info;
@@ -490,6 +496,10 @@ static int tmp007_probe(struct i2c_client *client,
 	if (ret < 0)
 		return ret;
 
+	ret = devm_add_action_or_reset(&client->dev, tmp007_powerdown_action_cb, data);
+	if (ret)
+		return ret;
+
 	/*
 	 * Only the following flags can activate ALERT pin. Data conversion/validity flags
 	 * flags can still be polled for getting temperature data
@@ -503,7 +513,7 @@ static int tmp007_probe(struct i2c_client *client,
 
 	ret = i2c_smbus_read_word_swapped(data->client, TMP007_STATUS_MASK);
 	if (ret < 0)
-		goto error_powerdown;
+		return ret;
 
 	data->status_mask = ret;
 	data->status_mask |= (TMP007_STATUS_OHF | TMP007_STATUS_OLF
@@ -511,7 +521,7 @@ static int tmp007_probe(struct i2c_client *client,
 
 	ret = i2c_smbus_write_word_swapped(data->client, TMP007_STATUS_MASK, data->status_mask);
 	if (ret < 0)
-		goto error_powerdown;
+		return ret;
 
 	if (client->irq) {
 		ret = devm_request_threaded_irq(&client->dev, client->irq,
@@ -520,30 +530,13 @@ static int tmp007_probe(struct i2c_client *client,
 				tmp007_id->name, indio_dev);
 		if (ret) {
 			dev_err(&client->dev, "irq request error %d\n", -ret);
-			goto error_powerdown;
+			return ret;
 		}
 	}
 
-	return iio_device_register(indio_dev);
-
-error_powerdown:
-	tmp007_powerdown(data);
-
-	return ret;
-}
-
-static int tmp007_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct tmp007_data *data = iio_priv(indio_dev);
-
-	iio_device_unregister(indio_dev);
-	tmp007_powerdown(data);
-
-	return 0;
+	return devm_iio_device_register(&client->dev, indio_dev);
 }
 
-#ifdef CONFIG_PM_SLEEP
 static int tmp007_suspend(struct device *dev)
 {
 	struct tmp007_data *data = iio_priv(i2c_get_clientdata(
@@ -560,9 +553,8 @@ static int tmp007_resume(struct device *dev)
 	return i2c_smbus_write_word_swapped(data->client, TMP007_CONFIG,
 			data->config | TMP007_CONFIG_CONV_EN);
 }
-#endif
 
-static SIMPLE_DEV_PM_OPS(tmp007_pm_ops, tmp007_suspend, tmp007_resume);
+static DEFINE_SIMPLE_DEV_PM_OPS(tmp007_pm_ops, tmp007_suspend, tmp007_resume);
 
 static const struct of_device_id tmp007_of_match[] = {
 	{ .compatible = "ti,tmp007", },
@@ -579,11 +571,10 @@ MODULE_DEVICE_TABLE(i2c, tmp007_id);
 static struct i2c_driver tmp007_driver = {
 	.driver = {
 		.name	= "tmp007",
-		.of_match_table = of_match_ptr(tmp007_of_match),
-		.pm	= &tmp007_pm_ops,
+		.of_match_table = tmp007_of_match,
+		.pm	= pm_sleep_ptr(&tmp007_pm_ops),
 	},
 	.probe		= tmp007_probe,
-	.remove		= tmp007_remove,
 	.id_table	= tmp007_id,
 };
 module_i2c_driver(tmp007_driver);
diff --git a/drivers/iio/temperature/tmp117.c b/drivers/iio/temperature/tmp117.c
new file mode 100644
index 000000000000..f9b8f2b570f6
--- /dev/null
+++ b/drivers/iio/temperature/tmp117.c
@@ -0,0 +1,185 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Digital temperature sensor with integrated Non-volatile memory
+ * Copyright (c) 2021 Puranjay Mohan <puranjay12@gmail.com>
+ *
+ * Driver for the Texas Instruments TMP117 Temperature Sensor
+ * (7-bit I2C slave address (0x48 - 0x4B), changeable via ADD pins)
+ *
+ * Note: This driver assumes that the sensor has been calibrated beforehand.
+ */
+
+#include <linux/err.h>
+#include <linux/i2c.h>
+#include <linux/module.h>
+#include <linux/bitops.h>
+#include <linux/types.h>
+#include <linux/kernel.h>
+#include <linux/limits.h>
+
+#include <linux/iio/iio.h>
+
+#define TMP117_REG_TEMP			0x0
+#define TMP117_REG_CFGR			0x1
+#define TMP117_REG_HIGH_LIM		0x2
+#define TMP117_REG_LOW_LIM		0x3
+#define TMP117_REG_EEPROM_UL		0x4
+#define TMP117_REG_EEPROM1		0x5
+#define TMP117_REG_EEPROM2		0x6
+#define TMP117_REG_TEMP_OFFSET		0x7
+#define TMP117_REG_EEPROM3		0x8
+#define TMP117_REG_DEVICE_ID		0xF
+
+#define TMP117_RESOLUTION_10UC		78125
+#define TMP117_DEVICE_ID		0x0117
+#define MICRODEGREE_PER_10MILLIDEGREE	10000
+
+struct tmp117_data {
+	struct i2c_client *client;
+	s16 calibbias;
+};
+
+static int tmp117_read_raw(struct iio_dev *indio_dev,
+		struct iio_chan_spec const *channel, int *val,
+		int *val2, long mask)
+{
+	struct tmp117_data *data = iio_priv(indio_dev);
+	s32 ret;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_RAW:
+		ret = i2c_smbus_read_word_swapped(data->client,
+						TMP117_REG_TEMP);
+		if (ret < 0)
+			return ret;
+		*val = sign_extend32(ret, 15);
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_CALIBBIAS:
+		ret = i2c_smbus_read_word_swapped(data->client,
+					TMP117_REG_TEMP_OFFSET);
+		if (ret < 0)
+			return ret;
+		*val = sign_extend32(ret, 15);
+		return IIO_VAL_INT;
+
+	case IIO_CHAN_INFO_SCALE:
+		/*
+		 * Conversion from 10s of uC to mC
+		 * as IIO reports temperature in mC
+		 */
+		*val = TMP117_RESOLUTION_10UC / MICRODEGREE_PER_10MILLIDEGREE;
+		*val2 = (TMP117_RESOLUTION_10UC %
+					MICRODEGREE_PER_10MILLIDEGREE) * 100;
+
+		return IIO_VAL_INT_PLUS_MICRO;
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static int tmp117_write_raw(struct iio_dev *indio_dev,
+		struct iio_chan_spec const *channel, int val,
+		int val2, long mask)
+{
+	struct tmp117_data *data = iio_priv(indio_dev);
+	s16 off;
+
+	switch (mask) {
+	case IIO_CHAN_INFO_CALIBBIAS:
+		off = clamp_t(int, val, S16_MIN, S16_MAX);
+		if (off == data->calibbias)
+			return 0;
+		data->calibbias = off;
+		return i2c_smbus_write_word_swapped(data->client,
+						TMP117_REG_TEMP_OFFSET, off);
+
+	default:
+		return -EINVAL;
+	}
+}
+
+static const struct iio_chan_spec tmp117_channels[] = {
+	{
+		.type = IIO_TEMP,
+		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
+			BIT(IIO_CHAN_INFO_CALIBBIAS) | BIT(IIO_CHAN_INFO_SCALE),
+	},
+};
+
+static const struct iio_info tmp117_info = {
+	.read_raw = tmp117_read_raw,
+	.write_raw = tmp117_write_raw,
+};
+
+static int tmp117_identify(struct i2c_client *client)
+{
+	int dev_id;
+
+	dev_id = i2c_smbus_read_word_swapped(client, TMP117_REG_DEVICE_ID);
+	if (dev_id < 0)
+		return dev_id;
+	if (dev_id != TMP117_DEVICE_ID) {
+		dev_err(&client->dev, "TMP117 not found\n");
+		return -ENODEV;
+	}
+	return 0;
+}
+
+static int tmp117_probe(struct i2c_client *client)
+{
+	struct tmp117_data *data;
+	struct iio_dev *indio_dev;
+	int ret;
+
+	if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
+		return -EOPNOTSUPP;
+
+	ret = tmp117_identify(client);
+	if (ret < 0)
+		return ret;
+
+	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
+	if (!indio_dev)
+		return -ENOMEM;
+
+	data = iio_priv(indio_dev);
+	data->client = client;
+	data->calibbias = 0;
+
+	indio_dev->name = "tmp117";
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->info = &tmp117_info;
+
+	indio_dev->channels = tmp117_channels;
+	indio_dev->num_channels = ARRAY_SIZE(tmp117_channels);
+
+	return devm_iio_device_register(&client->dev, indio_dev);
+}
+
+static const struct of_device_id tmp117_of_match[] = {
+	{ .compatible = "ti,tmp117", },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, tmp117_of_match);
+
+static const struct i2c_device_id tmp117_id[] = {
+	{ "tmp117", 0 },
+	{ }
+};
+MODULE_DEVICE_TABLE(i2c, tmp117_id);
+
+static struct i2c_driver tmp117_driver = {
+	.driver = {
+		.name	= "tmp117",
+		.of_match_table = tmp117_of_match,
+	},
+	.probe_new	= tmp117_probe,
+	.id_table	= tmp117_id,
+};
+module_i2c_driver(tmp117_driver);
+
+MODULE_AUTHOR("Puranjay Mohan <puranjay12@gmail.com>");
+MODULE_DESCRIPTION("TI TMP117 Temperature sensor driver");
+MODULE_LICENSE("GPL");
diff --git a/drivers/iio/temperature/tsys01.c b/drivers/iio/temperature/tsys01.c
index d41f050c2fea..60d58ec5b063 100644
--- a/drivers/iio/temperature/tsys01.c
+++ b/drivers/iio/temperature/tsys01.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/mutex.h>
 #include <linux/module.h>
+#include <linux/mod_devicetable.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/stat.h>
@@ -160,7 +161,6 @@ static int tsys01_probe(struct iio_dev *indio_dev, struct device *dev)
 
 	indio_dev->info = &tsys01_info;
 	indio_dev->name = dev->driver->name;
-	indio_dev->dev.parent = dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = tsys01_channels;
 	indio_dev->num_channels = ARRAY_SIZE(tsys01_channels);
@@ -223,7 +223,7 @@ static struct i2c_driver tsys01_driver = {
 	.id_table = tsys01_id,
 	.driver = {
 		   .name = "tsys01",
-		   .of_match_table = of_match_ptr(tsys01_of_match),
+		   .of_match_table = tsys01_of_match,
 		   },
 };
 
@@ -233,3 +233,4 @@ MODULE_DESCRIPTION("Measurement-Specialties tsys01 temperature driver");
 MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
 MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);
diff --git a/drivers/iio/temperature/tsys02d.c b/drivers/iio/temperature/tsys02d.c
index 6735af400b22..49c275e4f510 100644
--- a/drivers/iio/temperature/tsys02d.c
+++ b/drivers/iio/temperature/tsys02d.c
@@ -149,7 +149,6 @@ static int tsys02d_probe(struct i2c_client *client,
 
 	indio_dev->info = &tsys02d_info;
 	indio_dev->name = id->name;
-	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	indio_dev->channels = tsys02d_channels;
 	indio_dev->num_channels = ARRAY_SIZE(tsys02d_channels);
@@ -188,3 +187,4 @@ MODULE_DESCRIPTION("Measurement-Specialties tsys02d temperature driver");
 MODULE_AUTHOR("William Markezana <william.markezana@meas-spec.com>");
 MODULE_AUTHOR("Ludovic Tancerel <ludovic.tancerel@maplehightech.com>");
 MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_MEAS_SPEC_SENSORS);
diff --git a/drivers/iio/test/Kconfig b/drivers/iio/test/Kconfig
new file mode 100644
index 000000000000..0b6e4e278a2f
--- /dev/null
+++ b/drivers/iio/test/Kconfig
@@ -0,0 +1,29 @@
+# SPDX-License-Identifier: GPL-2.0-only
+#
+# Industrial I/O subsystem unit tests configuration
+#
+
+# Keep in alphabetical order
+config IIO_RESCALE_KUNIT_TEST
+	tristate "Test IIO rescale conversion functions" if !KUNIT_ALL_TESTS
+	depends on KUNIT && IIO_RESCALE
+	default KUNIT_ALL_TESTS
+	help
+	  Build unit tests for the iio-rescale code.
+
+	  For more information on KUnit and unit tests in general, please refer
+	  to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+	  If unsure, say N.
+
+config IIO_FORMAT_KUNIT_TEST
+	tristate "Test IIO formatting functions" if !KUNIT_ALL_TESTS
+	depends on KUNIT
+	default KUNIT_ALL_TESTS
+	help
+	  build unit tests for the IIO formatting functions.
+
+	  For more information on KUnit and unit tests in general, please refer
+	  to the KUnit documentation in Documentation/dev-tools/kunit/.
+
+	  If unsure, say N.
diff --git a/drivers/iio/test/Makefile b/drivers/iio/test/Makefile
new file mode 100644
index 000000000000..d76eaf36da82
--- /dev/null
+++ b/drivers/iio/test/Makefile
@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: GPL-2.0
+#
+# Makefile for the industrial I/O unit tests.
+#
+
+# Keep in alphabetical order
+obj-$(CONFIG_IIO_RESCALE_KUNIT_TEST) += iio-test-rescale.o
+obj-$(CONFIG_IIO_FORMAT_KUNIT_TEST) += iio-test-format.o
+CFLAGS_iio-test-format.o += $(DISABLE_STRUCTLEAK_PLUGIN)
diff --git a/drivers/iio/test/iio-test-format.c b/drivers/iio/test/iio-test-format.c
new file mode 100644
index 000000000000..fc67e6b73df7
--- /dev/null
+++ b/drivers/iio/test/iio-test-format.c
@@ -0,0 +1,271 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/* Unit tests for IIO formatting functions
+ *
+ * Copyright (c) 2020 Lars-Peter Clausen <lars@metafoo.de>
+ */
+
+#include <kunit/test.h>
+#include <linux/iio/iio.h>
+
+#define IIO_TEST_FORMAT_EXPECT_EQ(_test, _buf, _ret, _val) do { \
+		KUNIT_EXPECT_EQ(_test, strlen(_buf), _ret); \
+		KUNIT_EXPECT_STREQ(_test, (_buf), (_val)); \
+	} while (0)
+
+static void iio_test_iio_format_value_integer(struct kunit *test)
+{
+	char *buf;
+	int val;
+	int ret;
+
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
+	val = 42;
+	ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "42\n");
+
+	val = -23;
+	ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-23\n");
+
+	val = 0;
+	ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0\n");
+
+	val = INT_MAX;
+	ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "2147483647\n");
+
+	val = INT_MIN;
+	ret = iio_format_value(buf, IIO_VAL_INT, 1, &val);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-2147483648\n");
+}
+
+static void iio_test_iio_format_value_fixedpoint(struct kunit *test)
+{
+	int values[2];
+	char *buf;
+	int ret;
+
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
+	/* positive >= 1 */
+	values[0] = 1;
+	values[1] = 10;
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000010 dB\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1.000000010\n");
+
+	/* positive < 1 */
+	values[0] = 0;
+	values[1] = 12;
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000012 dB\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000012\n");
+
+	/* negative <= -1 */
+	values[0] = -1;
+	values[1] = 10;
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000010 dB\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1.000000010\n");
+
+	/* negative > -1 */
+	values[0] = 0;
+	values[1] = -123;
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO_DB, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000123 dB\n");
+
+	ret = iio_format_value(buf, IIO_VAL_INT_PLUS_NANO, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000123\n");
+}
+
+static void iio_test_iio_format_value_fractional(struct kunit *test)
+{
+	int values[2];
+	char *buf;
+	int ret;
+
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
+	/* positive < 1 */
+	values[0] = 1;
+	values[1] = 10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.100000000\n");
+
+	/* positive >= 1 */
+	values[0] = 100;
+	values[1] = 3;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "33.333333333\n");
+
+	/* negative > -1 */
+	values[0] = -1;
+	values[1] = 1000000000;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.000000001\n");
+
+	/* negative <= -1 */
+	values[0] = -200;
+	values[1] = 3;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-66.666666666\n");
+
+	/* Zero */
+	values[0] = 0;
+	values[1] = -10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n");
+}
+
+static void iio_test_iio_format_value_fractional_log2(struct kunit *test)
+{
+	int values[2];
+	char *buf;
+	int ret;
+
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
+	/* positive < 1 */
+	values[0] = 123;
+	values[1] = 10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.120117187\n");
+
+	/* positive >= 1 */
+	values[0] = 1234567;
+	values[1] = 10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1205.631835937\n");
+
+	/* negative > -1 */
+	values[0] = -123;
+	values[1] = 10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-0.120117187\n");
+
+	/* negative <= -1 */
+	values[0] = -1234567;
+	values[1] = 10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-1205.631835937\n");
+
+	/* Zero */
+	values[0] = 0;
+	values[1] = 10;
+	ret = iio_format_value(buf, IIO_VAL_FRACTIONAL_LOG2, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0.000000000\n");
+}
+
+static void iio_test_iio_format_value_multiple(struct kunit *test)
+{
+	int values[] = {1, -2, 3, -4, 5};
+	char *buf;
+	int ret;
+
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
+	ret = iio_format_value(buf, IIO_VAL_INT_MULTIPLE,
+			       ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "1 -2 3 -4 5 \n");
+}
+
+static void iio_test_iio_format_value_integer_64(struct kunit *test)
+{
+	int values[2];
+	s64 value;
+	char *buf;
+	int ret;
+
+	buf = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	KUNIT_ASSERT_NOT_ERR_OR_NULL(test, buf);
+
+	value = 24;
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "24\n");
+
+	value = -24;
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-24\n");
+
+	value = 0;
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "0\n");
+
+	value = UINT_MAX;
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "4294967295\n");
+
+	value = -((s64)UINT_MAX);
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-4294967295\n");
+
+	value = LLONG_MAX;
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "9223372036854775807\n");
+
+	value = LLONG_MIN;
+	values[0] = lower_32_bits(value);
+	values[1] = upper_32_bits(value);
+	ret = iio_format_value(buf, IIO_VAL_INT_64, ARRAY_SIZE(values), values);
+	IIO_TEST_FORMAT_EXPECT_EQ(test, buf, ret, "-9223372036854775808\n");
+}
+
+static struct kunit_case iio_format_test_cases[] = {
+		KUNIT_CASE(iio_test_iio_format_value_integer),
+		KUNIT_CASE(iio_test_iio_format_value_fixedpoint),
+		KUNIT_CASE(iio_test_iio_format_value_fractional),
+		KUNIT_CASE(iio_test_iio_format_value_fractional_log2),
+		KUNIT_CASE(iio_test_iio_format_value_multiple),
+		KUNIT_CASE(iio_test_iio_format_value_integer_64),
+		{}
+};
+
+static struct kunit_suite iio_format_test_suite = {
+	.name = "iio-format",
+	.test_cases = iio_format_test_cases,
+};
+kunit_test_suite(iio_format_test_suite);
+
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
+MODULE_DESCRIPTION("Test IIO formatting functions");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/iio/test/iio-test-rescale.c b/drivers/iio/test/iio-test-rescale.c
new file mode 100644
index 000000000000..31ee55a6faed
--- /dev/null
+++ b/drivers/iio/test/iio-test-rescale.c
@@ -0,0 +1,715 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * Kunit tests for IIO rescale conversions
+ *
+ * Copyright (c) 2021 Liam Beguin <liambeguin@gmail.com>
+ */
+
+#include <linux/gcd.h>
+#include <linux/overflow.h>
+
+#include <linux/iio/afe/rescale.h>
+#include <linux/iio/iio.h>
+
+#include <kunit/test.h>
+
+struct rescale_tc_data {
+	const char *name;
+
+	const s32 numerator;
+	const s32 denominator;
+	const s32 offset;
+
+	const int schan_val;
+	const int schan_val2;
+	const int schan_off;
+	const int schan_scale_type;
+
+	const char *expected;
+	const char *expected_off;
+};
+
+static const struct rescale_tc_data scale_cases[] = {
+	/*
+	 * Typical use cases
+	 */
+	{
+		.name = "typical IIO_VAL_INT, positive",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT,
+		.schan_val = 42,
+		.expected = "5210.918114143",
+	},
+	{
+		.name = "typical IIO_VAL_INT, negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT,
+		.schan_val = 42,
+		.expected = "-5210.918114143",
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL, positive",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 42,
+		.schan_val2 = 20,
+		.expected = "260.545905707",
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL, negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 42,
+		.schan_val2 = 20,
+		.expected = "-260.545905707",
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL_LOG2, positive",
+		.numerator = 42,
+		.denominator = 53,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 4096,
+		.schan_val2 = 16,
+		.expected = "0.049528301",
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL_LOG2, negative",
+		.numerator = -42,
+		.denominator = 53,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 4096,
+		.schan_val2 = 16,
+		.expected = "-0.049528301",
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_NANO, positive",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = 123456,
+		.expected = "1240.710106203",
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_NANO, negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = 123456,
+		.expected = "-1240.710106203",
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_MICRO, positive",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = 1234,
+		.expected = "1240.84789",
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_MICRO, negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = 1234,
+		.expected = "-1240.84789",
+	},
+	/*
+	 * Use cases with small scales involving divisions
+	 */
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 261/509 scaled by 90/1373754273",
+		.numerator = 261,
+		.denominator = 509,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 90,
+		.schan_val2 = 1373754273,
+		.expected = "0.000000033594",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 90/1373754273 scaled by 261/509",
+		.numerator = 90,
+		.denominator = 1373754273,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 261,
+		.schan_val2 = 509,
+		.expected = "0.000000033594",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 760/1373754273 scaled by 427/2727",
+		.numerator = 760,
+		.denominator = 1373754273,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 427,
+		.schan_val2 = 2727,
+		.expected = "0.000000086626",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 761/1373754273 scaled by 427/2727",
+		.numerator = 761,
+		.denominator = 1373754273,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 427,
+		.schan_val2 = 2727,
+		.expected = "0.000000086740",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 5/32768 scaled by 3/10000",
+		.numerator = 5,
+		.denominator = 32768,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 3,
+		.schan_val2 = 10000,
+		.expected = "0.0000000457763671875",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 0 < scale < 1",
+		.numerator = 6,
+		.denominator = 6,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 1,
+		.schan_val2 = 3,
+		.expected = "0.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, -1 < scale < 0",
+		.numerator = -6,
+		.denominator = 6,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 1,
+		.schan_val2 = 3,
+		.expected = "-0.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, 0 < scale < 2",
+		.numerator = 8,
+		.denominator = 2,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 1,
+		.schan_val2 = 3,
+		.expected = "1.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL, -2 < scale < 0",
+		.numerator = -8,
+		.denominator = 2,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 1,
+		.schan_val2 = 3,
+		.expected = "-1.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL_LOG2, 760/32768 scaled by 15/22",
+		.numerator = 760,
+		.denominator = 32768,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 15,
+		.schan_val2 = 22,
+		.expected = "0.000000082946",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL_LOG2, 761/32768 scaled by 15/22",
+		.numerator = 761,
+		.denominator = 32768,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 15,
+		.schan_val2 = 22,
+		.expected = "0.000000083055",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL_LOG2, 0 < scale < 1",
+		.numerator = 16,
+		.denominator = 3,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 1,
+		.schan_val2 = 4,
+		.expected = "0.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL_LOG2, -1 < scale < 0",
+		.numerator = -16,
+		.denominator = 3,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 1,
+		.schan_val2 = 4,
+		.expected = "-0.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL_LOG2, 0 < scale < 2",
+		.numerator = 8,
+		.denominator = 3,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 1,
+		.schan_val2 = 1,
+		.expected = "1.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_FRACTIONAL_LOG2, -2 < scale < 0",
+		.numerator = -8,
+		.denominator = 3,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 1,
+		.schan_val2 = 1,
+		.expected = "-1.3333333333333333",
+	},
+	{
+		.name = "small IIO_VAL_INT_PLUS_MICRO, positive",
+		.numerator = 1,
+		.denominator = 2,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 5,
+		.schan_val2 = 1234,
+		.expected = "2.500617",
+	},
+	{
+		.name = "small IIO_VAL_INT_PLUS_MICRO, negative",
+		.numerator = -1,
+		.denominator = 2,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 5,
+		.schan_val2 = 1234,
+		.expected = "-2.500617",
+	},
+	/*
+	 * INT_PLUS_{MICRO,NANO} positive/negative corner cases
+	 */
+	{
+		.name = "negative IIO_VAL_INT_PLUS_NANO, negative schan",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = -10,
+		.schan_val2 = 123456,
+		.expected = "-1240.710106203",
+	},
+	{
+		.name = "negative IIO_VAL_INT_PLUS_NANO, both negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = -10,
+		.schan_val2 = 123456,
+		.expected = "1240.710106203",
+	},
+	{
+		.name = "negative IIO_VAL_INT_PLUS_NANO, 3 negative",
+		.numerator = -1000000,
+		.denominator = -8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = -10,
+		.schan_val2 = 123456,
+		.expected = "-1240.710106203",
+	},
+	{
+		.name = "negative IIO_VAL_INT_PLUS_NANO, 4 negative",
+		.numerator = -1000000,
+		.denominator = -8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = -10,
+		.schan_val2 = -123456,
+		.expected = "-1240.710106203",
+	},
+	{
+		.name = "negative IIO_VAL_INT_PLUS_NANO, negative, *val = 0",
+		.numerator = 1,
+		.denominator = -10,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 0,
+		.schan_val2 = 123456789,
+		.expected = "-0.012345678",
+	},
+	/*
+	 * INT_PLUS_{MICRO,NANO} decimal part overflow
+	 */
+	{
+		.name = "decimal overflow IIO_VAL_INT_PLUS_NANO, positive",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.expected = "1256.01200856",
+	},
+	{
+		.name = "decimal overflow IIO_VAL_INT_PLUS_NANO, negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.expected = "-1256.01200856",
+	},
+	{
+		.name = "decimal overflow IIO_VAL_INT_PLUS_NANO, negative schan",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = -10,
+		.schan_val2 = 123456789,
+		.expected = "-1256.01200856",
+	},
+	{
+		.name = "decimal overflow IIO_VAL_INT_PLUS_MICRO, positive",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.expected = "16557.914267",
+	},
+	{
+		.name = "decimal overflow IIO_VAL_INT_PLUS_MICRO, negative",
+		.numerator = -1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.expected = "-16557.914267",
+	},
+	{
+		.name = "decimal overflow IIO_VAL_INT_PLUS_MICRO, negative schan",
+		.numerator = 1000000,
+		.denominator = 8060,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = -10,
+		.schan_val2 = 123456789,
+		.expected = "-16557.914267",
+	},
+	/*
+	 * 32-bit overflow conditions
+	 */
+	{
+		.name = "overflow IIO_VAL_FRACTIONAL, positive",
+		.numerator = 2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = S32_MAX,
+		.schan_val2 = 1,
+		.expected = "214748364.7",
+	},
+	{
+		.name = "overflow IIO_VAL_FRACTIONAL, negative",
+		.numerator = -2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = S32_MAX,
+		.schan_val2 = 1,
+		.expected = "-214748364.7",
+	},
+	{
+		.name = "overflow IIO_VAL_FRACTIONAL_LOG2, positive",
+		.numerator = S32_MAX,
+		.denominator = 4096,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 4096,
+		.schan_val2 = 16,
+		.expected = "32767.99998474121",
+	},
+	{
+		.name = "overflow IIO_VAL_FRACTIONAL_LOG2, negative",
+		.numerator = S32_MAX,
+		.denominator = 4096,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = -4096,
+		.schan_val2 = 16,
+		.expected = "-32767.99998474121",
+	},
+	{
+		.name = "overflow IIO_VAL_INT_PLUS_NANO, positive",
+		.numerator = 2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = S32_MAX,
+		.expected = "1.214748364",
+	},
+	{
+		.name = "overflow IIO_VAL_INT_PLUS_NANO, negative",
+		.numerator = -2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = S32_MAX,
+		.expected = "-1.214748364",
+	},
+	{
+		.name = "overflow IIO_VAL_INT_PLUS_NANO, negative schan",
+		.numerator = 2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = -10,
+		.schan_val2 = S32_MAX,
+		.expected = "-1.214748364",
+	},
+	{
+		.name = "overflow IIO_VAL_INT_PLUS_MICRO, positive",
+		.numerator = 2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = S32_MAX,
+		.expected = "215.748364",
+	},
+	{
+		.name = "overflow IIO_VAL_INT_PLUS_MICRO, negative",
+		.numerator = -2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = S32_MAX,
+		.expected = "-215.748364",
+	},
+	{
+		.name = "overflow IIO_VAL_INT_PLUS_MICRO, negative schan",
+		.numerator = 2,
+		.denominator = 20,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = -10,
+		.schan_val2 = S32_MAX,
+		.expected = "-215.748364",
+	},
+};
+
+static const struct rescale_tc_data offset_cases[] = {
+	/*
+	 * Typical use cases
+	 */
+	{
+		.name = "typical IIO_VAL_INT, positive",
+		.offset = 1234,
+		.schan_scale_type = IIO_VAL_INT,
+		.schan_val = 123,
+		.schan_val2 = 0,
+		.schan_off = 14,
+		.expected_off = "24", /* 23.872 */
+	},
+	{
+		.name = "typical IIO_VAL_INT, negative",
+		.offset = -1234,
+		.schan_scale_type = IIO_VAL_INT,
+		.schan_val = 12,
+		.schan_val2 = 0,
+		.schan_off = 14,
+		.expected_off = "-88", /* -88.83333333333333 */
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL, positive",
+		.offset = 1234,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 12,
+		.schan_val2 = 34,
+		.schan_off = 14,
+		.expected_off = "3510", /* 3510.333333333333 */
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL, negative",
+		.offset = -1234,
+		.schan_scale_type = IIO_VAL_FRACTIONAL,
+		.schan_val = 12,
+		.schan_val2 = 34,
+		.schan_off = 14,
+		.expected_off = "-3482", /* -3482.333333333333 */
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL_LOG2, positive",
+		.offset = 1234,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 12,
+		.schan_val2 = 16,
+		.schan_off = 14,
+		.expected_off = "6739299", /* 6739299.333333333 */
+	},
+	{
+		.name = "typical IIO_VAL_FRACTIONAL_LOG2, negative",
+		.offset = -1234,
+		.schan_scale_type = IIO_VAL_FRACTIONAL_LOG2,
+		.schan_val = 12,
+		.schan_val2 = 16,
+		.schan_off = 14,
+		.expected_off = "-6739271", /* -6739271.333333333 */
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_NANO, positive",
+		.offset = 1234,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.schan_off = 14,
+		.expected_off = "135", /* 135.8951219647469 */
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_NANO, negative",
+		.offset = -1234,
+		.schan_scale_type = IIO_VAL_INT_PLUS_NANO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.schan_off = 14,
+		.expected_off = "-107", /* -107.89512196474689 */
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_MICRO, positive",
+		.offset = 1234,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.schan_off = 14,
+		.expected_off = "23", /* 23.246438560723952 */
+	},
+	{
+		.name = "typical IIO_VAL_INT_PLUS_MICRO, negative",
+		.offset = -12345,
+		.schan_scale_type = IIO_VAL_INT_PLUS_MICRO,
+		.schan_val = 10,
+		.schan_val2 = 123456789,
+		.schan_off = 14,
+		.expected_off = "-78", /* -78.50185091745313 */
+	},
+};
+
+static void case_to_desc(const struct rescale_tc_data *t, char *desc)
+{
+	strcpy(desc, t->name);
+}
+
+KUNIT_ARRAY_PARAM(iio_rescale_scale, scale_cases, case_to_desc);
+KUNIT_ARRAY_PARAM(iio_rescale_offset, offset_cases, case_to_desc);
+
+/**
+ * iio_str_to_nano() - Parse a fixed-point string to get an
+ *                      IIO_VAL_INT_PLUS_NANO value
+ * @str: The string to parse
+ * @nano: The number as an integer
+ *
+ * Returns 0 on success, or a negative error code if the string cound not be
+ * parsed.
+ */
+static int iio_str_to_nano(const char *str, s64 *nano)
+{
+	int tmp, tmp2;
+	int ret = 0;
+
+	/*
+	 * iio_str_to_fixpoint() uses 10^8 here instead of 10^9 as fract_mult is
+	 * the multiplier for the first decimal place.
+	 */
+	ret = iio_str_to_fixpoint(str, 100000000, &tmp, &tmp2);
+	if (ret < 0)
+		return ret;
+
+	if (tmp < 0)
+		tmp2 *= -1;
+
+	*nano = (s64)tmp * 1000000000UL + tmp2;
+
+	return ret;
+}
+
+/**
+ * iio_test_relative_error_ppm() - Compute relative error (in parts-per-million)
+ *                                 between two fixed-point strings
+ * @real_str: The real value as a string
+ * @exp_str: The expected value as a string
+ *
+ * Returns a negative error code if the strings cound not be parsed, or the
+ * relative error in parts-per-million.
+ */
+static int iio_test_relative_error_ppm(const char *real_str, const char *exp_str)
+{
+	s64 real, exp, err;
+	int ret;
+
+	ret = iio_str_to_nano(real_str, &real);
+	if (ret < 0)
+		return ret;
+
+	ret = iio_str_to_nano(exp_str, &exp);
+	if (ret < 0)
+		return ret;
+
+	if (!exp) {
+		pr_err("Expected value is null, relative error is undefined\n");
+		return -EINVAL;
+	}
+
+	err = 1000000UL * abs(exp - real);
+
+	return (int)div64_u64(err, abs(exp));
+}
+
+static void iio_rescale_test_scale(struct kunit *test)
+{
+	struct rescale_tc_data *t = (struct rescale_tc_data *)test->param_value;
+	char *buff = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	struct rescale rescale;
+	int values[2];
+	int rel_ppm;
+	int ret;
+
+	rescale.numerator = t->numerator;
+	rescale.denominator = t->denominator;
+	rescale.offset = t->offset;
+	values[0] = t->schan_val;
+	values[1] = t->schan_val2;
+
+	ret = rescale_process_scale(&rescale, t->schan_scale_type,
+				    &values[0], &values[1]);
+
+	ret = iio_format_value(buff, ret, 2, values);
+	KUNIT_EXPECT_EQ(test, (int)strlen(buff), ret);
+
+	rel_ppm = iio_test_relative_error_ppm(buff, t->expected);
+	KUNIT_EXPECT_GE_MSG(test, rel_ppm, 0, "failed to compute ppm\n");
+
+	KUNIT_EXPECT_EQ_MSG(test, rel_ppm, 0,
+			    "\t    real=%s"
+			    "\texpected=%s\n",
+			    buff, t->expected);
+}
+
+static void iio_rescale_test_offset(struct kunit *test)
+{
+	struct rescale_tc_data *t = (struct rescale_tc_data *)test->param_value;
+	char *buff_off = kunit_kmalloc(test, PAGE_SIZE, GFP_KERNEL);
+	struct rescale rescale;
+	int values[2];
+	int ret;
+
+	rescale.numerator = t->numerator;
+	rescale.denominator = t->denominator;
+	rescale.offset = t->offset;
+	values[0] = t->schan_val;
+	values[1] = t->schan_val2;
+
+	ret = rescale_process_offset(&rescale, t->schan_scale_type,
+				     t->schan_val, t->schan_val2, t->schan_off,
+				     &values[0], &values[1]);
+
+	ret = iio_format_value(buff_off, ret, 2, values);
+	KUNIT_EXPECT_EQ(test, (int)strlen(buff_off), ret);
+
+	KUNIT_EXPECT_STREQ(test, strim(buff_off), t->expected_off);
+}
+
+static struct kunit_case iio_rescale_test_cases[] = {
+	KUNIT_CASE_PARAM(iio_rescale_test_scale, iio_rescale_scale_gen_params),
+	KUNIT_CASE_PARAM(iio_rescale_test_offset, iio_rescale_offset_gen_params),
+	{}
+};
+
+static struct kunit_suite iio_rescale_test_suite = {
+	.name = "iio-rescale",
+	.test_cases = iio_rescale_test_cases,
+};
+kunit_test_suite(iio_rescale_test_suite);
+
+MODULE_AUTHOR("Liam Beguin <liambeguin@gmail.com>");
+MODULE_DESCRIPTION("Test IIO rescale conversion functions");
+MODULE_LICENSE("GPL v2");
+MODULE_IMPORT_NS(IIO_RESCALE);
diff --git a/drivers/iio/trigger/Kconfig b/drivers/iio/trigger/Kconfig
index 8cef2f7452e8..7ecb69725b1d 100644
--- a/drivers/iio/trigger/Kconfig
+++ b/drivers/iio/trigger/Kconfig
@@ -38,7 +38,7 @@ config IIO_STM32_LPTIMER_TRIGGER
 
 config IIO_STM32_TIMER_TRIGGER
 	tristate "STM32 Timer Trigger"
-	depends on (ARCH_STM32 && OF && MFD_STM32_TIMERS) || COMPILE_TEST
+	depends on (ARCH_STM32 && MFD_STM32_TIMERS) || COMPILE_TEST
 	help
 	  Select this option to enable STM32 Timer Trigger
 
diff --git a/drivers/iio/trigger/iio-trig-hrtimer.c b/drivers/iio/trigger/iio-trig-hrtimer.c
index a5e670726717..716c795d08fb 100644
--- a/drivers/iio/trigger/iio-trig-hrtimer.c
+++ b/drivers/iio/trigger/iio-trig-hrtimer.c
@@ -1,10 +1,10 @@
 // SPDX-License-Identifier: GPL-2.0-only
-/**
+/*
  * The industrial I/O periodic hrtimer trigger driver
  *
  * Copyright (C) Intuitive Aerial AB
  * Written by Marten Svanfeldt, marten@intuitiveaerial.com
- * Copyright (C) 2012, Analog Device Inc.
+ * Copyright (C) 2012, Analog Devices Inc.
  *	Author: Lars-Peter Clausen <lars@metafoo.de>
  * Copyright (C) 2015, Intel Corporation
  */
@@ -16,13 +16,16 @@
 #include <linux/iio/trigger.h>
 #include <linux/iio/sw_trigger.h>
 
+/* Defined locally, not in time64.h yet. */
+#define PSEC_PER_SEC   1000000000000LL
+
 /* default sampling frequency - 100Hz */
 #define HRTIMER_DEFAULT_SAMPLING_FREQUENCY 100
 
 struct iio_hrtimer_info {
 	struct iio_sw_trigger swt;
 	struct hrtimer timer;
-	unsigned long sampling_frequency;
+	int sampling_frequency[2];
 	ktime_t period;
 };
 
@@ -38,7 +41,9 @@ ssize_t iio_hrtimer_show_sampling_frequency(struct device *dev,
 	struct iio_trigger *trig = to_iio_trigger(dev);
 	struct iio_hrtimer_info *info = iio_trigger_get_drvdata(trig);
 
-	return snprintf(buf, PAGE_SIZE, "%lu\n", info->sampling_frequency);
+	return iio_format_value(buf, IIO_VAL_INT_PLUS_MICRO,
+			ARRAY_SIZE(info->sampling_frequency),
+			info->sampling_frequency);
 }
 
 static
@@ -48,18 +53,26 @@ ssize_t iio_hrtimer_store_sampling_frequency(struct device *dev,
 {
 	struct iio_trigger *trig = to_iio_trigger(dev);
 	struct iio_hrtimer_info *info = iio_trigger_get_drvdata(trig);
-	unsigned long val;
-	int ret;
+	unsigned long long val;
+	u64 period;
+	int integer, fract, ret;
 
-	ret = kstrtoul(buf, 10, &val);
+	ret = iio_str_to_fixpoint(buf, 100, &integer, &fract);
 	if (ret)
 		return ret;
+	if (integer < 0 || fract < 0)
+		return -ERANGE;
+
+	val = fract + 1000ULL * integer;  /* mHz */
 
-	if (!val || val > NSEC_PER_SEC)
+	if (!val || val > UINT_MAX)
 		return -EINVAL;
 
-	info->sampling_frequency = val;
-	info->period = NSEC_PER_SEC / val;
+	info->sampling_frequency[0] = integer;  /* Hz */
+	info->sampling_frequency[1] = fract * 1000;  /* uHz */
+	period = PSEC_PER_SEC;
+	do_div(period, val);
+	info->period = period;  /* nS */
 
 	return len;
 }
@@ -102,7 +115,7 @@ static int iio_trig_hrtimer_set_state(struct iio_trigger *trig, bool state)
 
 	if (state)
 		hrtimer_start(&trig_info->timer, trig_info->period,
-			      HRTIMER_MODE_REL);
+			      HRTIMER_MODE_REL_HARD);
 	else
 		hrtimer_cancel(&trig_info->timer);
 
@@ -122,7 +135,7 @@ static struct iio_sw_trigger *iio_trig_hrtimer_probe(const char *name)
 	if (!trig_info)
 		return ERR_PTR(-ENOMEM);
 
-	trig_info->swt.trigger = iio_trigger_alloc("%s", name);
+	trig_info->swt.trigger = iio_trigger_alloc(NULL, "%s", name);
 	if (!trig_info->swt.trigger) {
 		ret = -ENOMEM;
 		goto err_free_trig_info;
@@ -132,11 +145,11 @@ static struct iio_sw_trigger *iio_trig_hrtimer_probe(const char *name)
 	trig_info->swt.trigger->ops = &iio_hrtimer_trigger_ops;
 	trig_info->swt.trigger->dev.groups = iio_hrtimer_attr_groups;
 
-	hrtimer_init(&trig_info->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+	hrtimer_init(&trig_info->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL_HARD);
 	trig_info->timer.function = iio_hrtimer_trig_handler;
 
-	trig_info->sampling_frequency = HRTIMER_DEFAULT_SAMPLING_FREQUENCY;
-	trig_info->period = NSEC_PER_SEC / trig_info->sampling_frequency;
+	trig_info->sampling_frequency[0] = HRTIMER_DEFAULT_SAMPLING_FREQUENCY;
+	trig_info->period = NSEC_PER_SEC / trig_info->sampling_frequency[0];
 
 	ret = iio_trigger_register(trig_info->swt.trigger);
 	if (ret)
diff --git a/drivers/iio/trigger/iio-trig-interrupt.c b/drivers/iio/trigger/iio-trig-interrupt.c
index 94a487caf421..5f49cd105fae 100644
--- a/drivers/iio/trigger/iio-trig-interrupt.c
+++ b/drivers/iio/trigger/iio-trig-interrupt.c
@@ -25,9 +25,6 @@ static irqreturn_t iio_interrupt_trigger_poll(int irq, void *private)
 	return IRQ_HANDLED;
 }
 
-static const struct iio_trigger_ops iio_interrupt_trigger_ops = {
-};
-
 static int iio_interrupt_trigger_probe(struct platform_device *pdev)
 {
 	struct iio_interrupt_trigger_info *trig_info;
@@ -45,7 +42,7 @@ static int iio_interrupt_trigger_probe(struct platform_device *pdev)
 
 	irq = irq_res->start;
 
-	trig = iio_trigger_alloc("irqtrig%d", irq);
+	trig = iio_trigger_alloc(NULL, "irqtrig%d", irq);
 	if (!trig) {
 		ret = -ENOMEM;
 		goto error_ret;
@@ -58,7 +55,6 @@ static int iio_interrupt_trigger_probe(struct platform_device *pdev)
 	}
 	iio_trigger_set_drvdata(trig, trig_info);
 	trig_info->irq = irq;
-	trig->ops = &iio_interrupt_trigger_ops;
 	ret = request_irq(irq, iio_interrupt_trigger_poll,
 			  irqflags, trig->name, trig);
 	if (ret) {
diff --git a/drivers/iio/trigger/iio-trig-loop.c b/drivers/iio/trigger/iio-trig-loop.c
index 4a00668e3258..96ec06bbe546 100644
--- a/drivers/iio/trigger/iio-trig-loop.c
+++ b/drivers/iio/trigger/iio-trig-loop.c
@@ -84,7 +84,7 @@ static struct iio_sw_trigger *iio_trig_loop_probe(const char *name)
 	if (!trig_info)
 		return ERR_PTR(-ENOMEM);
 
-	trig_info->swt.trigger = iio_trigger_alloc("%s", name);
+	trig_info->swt.trigger = iio_trigger_alloc(NULL, "%s", name);
 	if (!trig_info->swt.trigger) {
 		ret = -ENOMEM;
 		goto err_free_trig_info;
diff --git a/drivers/iio/trigger/iio-trig-sysfs.c b/drivers/iio/trigger/iio-trig-sysfs.c
index e09e58072872..d6c5e9644738 100644
--- a/drivers/iio/trigger/iio-trig-sysfs.c
+++ b/drivers/iio/trigger/iio-trig-sysfs.c
@@ -124,9 +124,6 @@ static const struct attribute_group *iio_sysfs_trigger_attr_groups[] = {
 	NULL
 };
 
-static const struct iio_trigger_ops iio_sysfs_trigger_ops = {
-};
-
 static int iio_sysfs_trigger_probe(int id)
 {
 	struct iio_sysfs_trig *t;
@@ -149,18 +146,16 @@ static int iio_sysfs_trigger_probe(int id)
 		goto out1;
 	}
 	t->id = id;
-	t->trig = iio_trigger_alloc("sysfstrig%d", id);
+	t->trig = iio_trigger_alloc(&iio_sysfs_trig_dev, "sysfstrig%d", id);
 	if (!t->trig) {
 		ret = -ENOMEM;
 		goto free_t;
 	}
 
 	t->trig->dev.groups = iio_sysfs_trigger_attr_groups;
-	t->trig->ops = &iio_sysfs_trigger_ops;
-	t->trig->dev.parent = &iio_sysfs_trig_dev;
 	iio_trigger_set_drvdata(t->trig, t);
 
-	init_irq_work(&t->work, iio_sysfs_trigger_work);
+	t->work = IRQ_WORK_INIT_HARD(iio_sysfs_trigger_work);
 
 	ret = iio_trigger_register(t->trig);
 	if (ret)
@@ -181,21 +176,21 @@ out1:
 
 static int iio_sysfs_trigger_remove(int id)
 {
-	bool foundit = false;
-	struct iio_sysfs_trig *t;
+	struct iio_sysfs_trig *t = NULL, *iter;
 
 	mutex_lock(&iio_sysfs_trig_list_mut);
-	list_for_each_entry(t, &iio_sysfs_trig_list, l)
-		if (id == t->id) {
-			foundit = true;
+	list_for_each_entry(iter, &iio_sysfs_trig_list, l)
+		if (id == iter->id) {
+			t = iter;
 			break;
 		}
-	if (!foundit) {
+	if (!t) {
 		mutex_unlock(&iio_sysfs_trig_list_mut);
 		return -EINVAL;
 	}
 
 	iio_trigger_unregister(t->trig);
+	irq_work_sync(&t->work);
 	iio_trigger_free(t->trig);
 
 	list_del(&t->l);
diff --git a/drivers/iio/trigger/stm32-lptimer-trigger.c b/drivers/iio/trigger/stm32-lptimer-trigger.c
index 98cdc7e47f3d..2e447a3f047d 100644
--- a/drivers/iio/trigger/stm32-lptimer-trigger.c
+++ b/drivers/iio/trigger/stm32-lptimer-trigger.c
@@ -11,8 +11,10 @@
 
 #include <linux/iio/timer/stm32-lptim-trigger.h>
 #include <linux/mfd/stm32-lptimer.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
+#include <linux/property.h>
 
 /* List Low-Power Timer triggers */
 static const char * const stm32_lptim_triggers[] = {
@@ -77,7 +79,7 @@ static int stm32_lptim_trigger_probe(struct platform_device *pdev)
 	if (!priv)
 		return -ENOMEM;
 
-	if (of_property_read_u32(pdev->dev.of_node, "reg", &index))
+	if (device_property_read_u32(&pdev->dev, "reg", &index))
 		return -EINVAL;
 
 	if (index >= ARRAY_SIZE(stm32_lptim_triggers))
diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c
index 2f82e8c32186..3643c4afae67 100644
--- a/drivers/iio/trigger/stm32-timer-trigger.c
+++ b/drivers/iio/trigger/stm32-timer-trigger.c
@@ -11,9 +11,10 @@
 #include <linux/iio/timer/stm32-timer-trigger.h>
 #include <linux/iio/trigger.h>
 #include <linux/mfd/stm32-timers.h>
+#include <linux/mod_devicetable.h>
 #include <linux/module.h>
 #include <linux/platform_device.h>
-#include <linux/of_device.h>
+#include <linux/property.h>
 
 #define MAX_TRIGGERS 7
 #define MAX_VALIDS 5
@@ -75,14 +76,27 @@ static const void *stm32h7_valids_table[][MAX_VALIDS] = {
 	{ }, /* timer 17 */
 };
 
+struct stm32_timer_trigger_regs {
+	u32 cr1;
+	u32 cr2;
+	u32 psc;
+	u32 arr;
+	u32 cnt;
+	u32 smcr;
+};
+
 struct stm32_timer_trigger {
 	struct device *dev;
 	struct regmap *regmap;
 	struct clk *clk;
+	bool enabled;
 	u32 max_arr;
 	const void *triggers;
 	const void *valids;
 	bool has_trgo2;
+	struct mutex lock; /* concurrent sysfs configuration */
+	struct list_head tr_list;
+	struct stm32_timer_trigger_regs bak;
 };
 
 struct stm32_timer_trigger_cfg {
@@ -106,7 +120,7 @@ static int stm32_timer_start(struct stm32_timer_trigger *priv,
 {
 	unsigned long long prd, div;
 	int prescaler = 0;
-	u32 ccer, cr1;
+	u32 ccer;
 
 	/* Period and prescaler values depends of clock rate */
 	div = (unsigned long long)clk_get_rate(priv->clk);
@@ -136,9 +150,11 @@ static int stm32_timer_start(struct stm32_timer_trigger *priv,
 	if (ccer & TIM_CCER_CCXE)
 		return -EBUSY;
 
-	regmap_read(priv->regmap, TIM_CR1, &cr1);
-	if (!(cr1 & TIM_CR1_CEN))
+	mutex_lock(&priv->lock);
+	if (!priv->enabled) {
+		priv->enabled = true;
 		clk_enable(priv->clk);
+	}
 
 	regmap_write(priv->regmap, TIM_PSC, prescaler);
 	regmap_write(priv->regmap, TIM_ARR, prd - 1);
@@ -157,6 +173,7 @@ static int stm32_timer_start(struct stm32_timer_trigger *priv,
 
 	/* Enable controller */
 	regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, TIM_CR1_CEN);
+	mutex_unlock(&priv->lock);
 
 	return 0;
 }
@@ -164,16 +181,13 @@ static int stm32_timer_start(struct stm32_timer_trigger *priv,
 static void stm32_timer_stop(struct stm32_timer_trigger *priv,
 			     struct iio_trigger *trig)
 {
-	u32 ccer, cr1;
+	u32 ccer;
 
 	regmap_read(priv->regmap, TIM_CCER, &ccer);
 	if (ccer & TIM_CCER_CCXE)
 		return;
 
-	regmap_read(priv->regmap, TIM_CR1, &cr1);
-	if (cr1 & TIM_CR1_CEN)
-		clk_disable(priv->clk);
-
+	mutex_lock(&priv->lock);
 	/* Stop timer */
 	regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_ARPE, 0);
 	regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, 0);
@@ -188,6 +202,12 @@ static void stm32_timer_stop(struct stm32_timer_trigger *priv,
 
 	/* Make sure that registers are updated */
 	regmap_update_bits(priv->regmap, TIM_EGR, TIM_EGR_UG, TIM_EGR_UG);
+
+	if (priv->enabled) {
+		priv->enabled = false;
+		clk_disable(priv->clk);
+	}
+	mutex_unlock(&priv->lock);
 }
 
 static ssize_t stm32_tt_store_frequency(struct device *dev,
@@ -277,7 +297,7 @@ static ssize_t stm32_tt_show_master_mode(struct device *dev,
 	else
 		cr2 = (cr2 & TIM_CR2_MMS) >> TIM_CR2_MMS_SHIFT;
 
-	return snprintf(buf, PAGE_SIZE, "%s\n", master_mode_table[cr2]);
+	return sysfs_emit(buf, "%s\n", master_mode_table[cr2]);
 }
 
 static ssize_t stm32_tt_store_master_mode(struct device *dev,
@@ -302,8 +322,15 @@ static ssize_t stm32_tt_store_master_mode(struct device *dev,
 	for (i = 0; i <= master_mode_max; i++) {
 		if (!strncmp(master_mode_table[i], buf,
 			     strlen(master_mode_table[i]))) {
+			mutex_lock(&priv->lock);
+			if (!priv->enabled) {
+				/* Clock should be enabled first */
+				priv->enabled = true;
+				clk_enable(priv->clk);
+			}
 			regmap_update_bits(priv->regmap, TIM_CR2, mask,
 					   i << shift);
+			mutex_unlock(&priv->lock);
 			return len;
 		}
 	}
@@ -361,11 +388,21 @@ static const struct attribute_group *stm32_trigger_attr_groups[] = {
 static const struct iio_trigger_ops timer_trigger_ops = {
 };
 
-static int stm32_setup_iio_triggers(struct stm32_timer_trigger *priv)
+static void stm32_unregister_iio_triggers(struct stm32_timer_trigger *priv)
+{
+	struct iio_trigger *tr;
+
+	list_for_each_entry(tr, &priv->tr_list, alloc_list)
+		iio_trigger_unregister(tr);
+}
+
+static int stm32_register_iio_triggers(struct stm32_timer_trigger *priv)
 {
 	int ret;
 	const char * const *cur = priv->triggers;
 
+	INIT_LIST_HEAD(&priv->tr_list);
+
 	while (cur && *cur) {
 		struct iio_trigger *trig;
 		bool cur_is_trgo = stm32_timer_is_trgo_name(*cur);
@@ -392,9 +429,13 @@ static int stm32_setup_iio_triggers(struct stm32_timer_trigger *priv)
 
 		iio_trigger_set_drvdata(trig, priv);
 
-		ret = devm_iio_trigger_register(priv->dev, trig);
-		if (ret)
+		ret = iio_trigger_register(trig);
+		if (ret) {
+			stm32_unregister_iio_triggers(priv);
 			return ret;
+		}
+
+		list_add_tail(&trig->alloc_list, &priv->tr_list);
 		cur++;
 	}
 
@@ -441,7 +482,6 @@ static int stm32_counter_write_raw(struct iio_dev *indio_dev,
 				   int val, int val2, long mask)
 {
 	struct stm32_timer_trigger *priv = iio_priv(indio_dev);
-	u32 dat;
 
 	switch (mask) {
 	case IIO_CHAN_INFO_RAW:
@@ -452,19 +492,23 @@ static int stm32_counter_write_raw(struct iio_dev *indio_dev,
 		return -EINVAL;
 
 	case IIO_CHAN_INFO_ENABLE:
+		mutex_lock(&priv->lock);
 		if (val) {
-			regmap_read(priv->regmap, TIM_CR1, &dat);
-			if (!(dat & TIM_CR1_CEN))
+			if (!priv->enabled) {
+				priv->enabled = true;
 				clk_enable(priv->clk);
+			}
 			regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN,
 					   TIM_CR1_CEN);
 		} else {
-			regmap_read(priv->regmap, TIM_CR1, &dat);
 			regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN,
 					   0);
-			if (dat & TIM_CR1_CEN)
+			if (priv->enabled) {
+				priv->enabled = false;
 				clk_disable(priv->clk);
+			}
 		}
+		mutex_unlock(&priv->lock);
 		return 0;
 	}
 
@@ -560,7 +604,6 @@ static int stm32_set_enable_mode(struct iio_dev *indio_dev,
 {
 	struct stm32_timer_trigger *priv = iio_priv(indio_dev);
 	int sms = stm32_enable_mode2sms(mode);
-	u32 val;
 
 	if (sms < 0)
 		return sms;
@@ -568,11 +611,12 @@ static int stm32_set_enable_mode(struct iio_dev *indio_dev,
 	 * Triggered mode sets CEN bit automatically by hardware. So, first
 	 * enable counter clock, so it can use it. Keeps it in sync with CEN.
 	 */
-	if (sms == 6) {
-		regmap_read(priv->regmap, TIM_CR1, &val);
-		if (!(val & TIM_CR1_CEN))
-			clk_enable(priv->clk);
+	mutex_lock(&priv->lock);
+	if (sms == 6 && !priv->enabled) {
+		clk_enable(priv->clk);
+		priv->enabled = true;
 	}
+	mutex_unlock(&priv->lock);
 
 	regmap_update_bits(priv->regmap, TIM_SMCR, TIM_SMCR_SMS, sms);
 
@@ -653,9 +697,9 @@ static const struct iio_chan_spec_ext_info stm32_trigger_count_info[] = {
 		.write = stm32_count_set_preset
 	},
 	IIO_ENUM("enable_mode", IIO_SEPARATE, &stm32_enable_mode_enum),
-	IIO_ENUM_AVAILABLE("enable_mode", &stm32_enable_mode_enum),
+	IIO_ENUM_AVAILABLE("enable_mode", IIO_SHARED_BY_TYPE, &stm32_enable_mode_enum),
 	IIO_ENUM("trigger_mode", IIO_SEPARATE, &stm32_trigger_mode_enum),
-	IIO_ENUM_AVAILABLE("trigger_mode", &stm32_trigger_mode_enum),
+	IIO_ENUM_AVAILABLE("trigger_mode", IIO_SHARED_BY_TYPE, &stm32_trigger_mode_enum),
 	{}
 };
 
@@ -680,12 +724,10 @@ static struct stm32_timer_trigger *stm32_setup_counter_device(struct device *dev
 		return NULL;
 
 	indio_dev->name = dev_name(dev);
-	indio_dev->dev.parent = dev;
 	indio_dev->info = &stm32_trigger_info;
 	indio_dev->modes = INDIO_HARDWARE_TRIGGERED;
 	indio_dev->num_channels = 1;
 	indio_dev->channels = &stm32_trigger_channel;
-	indio_dev->dev.of_node = dev->of_node;
 
 	ret = devm_iio_device_register(dev, indio_dev);
 	if (ret)
@@ -730,11 +772,11 @@ static int stm32_timer_trigger_probe(struct platform_device *pdev)
 	unsigned int index;
 	int ret;
 
-	if (of_property_read_u32(dev->of_node, "reg", &index))
-		return -EINVAL;
+	ret = device_property_read_u32(dev, "reg", &index);
+	if (ret)
+		return ret;
 
-	cfg = (const struct stm32_timer_trigger_cfg *)
-		of_match_device(dev->driver->of_match_table, dev)->data;
+	cfg = device_get_match_data(dev);
 
 	if (index >= ARRAY_SIZE(triggers_table) ||
 	    index >= cfg->num_valids_table)
@@ -756,8 +798,9 @@ static int stm32_timer_trigger_probe(struct platform_device *pdev)
 	priv->triggers = triggers_table[index];
 	priv->valids = cfg->valids_table[index];
 	stm32_timer_detect_trgo2(priv);
+	mutex_init(&priv->lock);
 
-	ret = stm32_setup_iio_triggers(priv);
+	ret = stm32_register_iio_triggers(priv);
 	if (ret)
 		return ret;
 
@@ -766,6 +809,77 @@ static int stm32_timer_trigger_probe(struct platform_device *pdev)
 	return 0;
 }
 
+static int stm32_timer_trigger_remove(struct platform_device *pdev)
+{
+	struct stm32_timer_trigger *priv = platform_get_drvdata(pdev);
+	u32 val;
+
+	/* Unregister triggers before everything can be safely turned off */
+	stm32_unregister_iio_triggers(priv);
+
+	/* Check if nobody else use the timer, then disable it */
+	regmap_read(priv->regmap, TIM_CCER, &val);
+	if (!(val & TIM_CCER_CCXE))
+		regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, 0);
+
+	if (priv->enabled)
+		clk_disable(priv->clk);
+
+	return 0;
+}
+
+static int stm32_timer_trigger_suspend(struct device *dev)
+{
+	struct stm32_timer_trigger *priv = dev_get_drvdata(dev);
+
+	/* Only take care of enabled timer: don't disturb other MFD child */
+	if (priv->enabled) {
+		/* Backup registers that may get lost in low power mode */
+		regmap_read(priv->regmap, TIM_CR1, &priv->bak.cr1);
+		regmap_read(priv->regmap, TIM_CR2, &priv->bak.cr2);
+		regmap_read(priv->regmap, TIM_PSC, &priv->bak.psc);
+		regmap_read(priv->regmap, TIM_ARR, &priv->bak.arr);
+		regmap_read(priv->regmap, TIM_CNT, &priv->bak.cnt);
+		regmap_read(priv->regmap, TIM_SMCR, &priv->bak.smcr);
+
+		/* Disable the timer */
+		regmap_update_bits(priv->regmap, TIM_CR1, TIM_CR1_CEN, 0);
+		clk_disable(priv->clk);
+	}
+
+	return 0;
+}
+
+static int stm32_timer_trigger_resume(struct device *dev)
+{
+	struct stm32_timer_trigger *priv = dev_get_drvdata(dev);
+	int ret;
+
+	if (priv->enabled) {
+		ret = clk_enable(priv->clk);
+		if (ret)
+			return ret;
+
+		/* restore master/slave modes */
+		regmap_write(priv->regmap, TIM_SMCR, priv->bak.smcr);
+		regmap_write(priv->regmap, TIM_CR2, priv->bak.cr2);
+
+		/* restore sampling_frequency (trgo / trgo2 triggers) */
+		regmap_write(priv->regmap, TIM_PSC, priv->bak.psc);
+		regmap_write(priv->regmap, TIM_ARR, priv->bak.arr);
+		regmap_write(priv->regmap, TIM_CNT, priv->bak.cnt);
+
+		/* Also re-enables the timer */
+		regmap_write(priv->regmap, TIM_CR1, priv->bak.cr1);
+	}
+
+	return 0;
+}
+
+static DEFINE_SIMPLE_DEV_PM_OPS(stm32_timer_trigger_pm_ops,
+				stm32_timer_trigger_suspend,
+				stm32_timer_trigger_resume);
+
 static const struct stm32_timer_trigger_cfg stm32_timer_trg_cfg = {
 	.valids_table = valids_table,
 	.num_valids_table = ARRAY_SIZE(valids_table),
@@ -790,13 +904,15 @@ MODULE_DEVICE_TABLE(of, stm32_trig_of_match);
 
 static struct platform_driver stm32_timer_trigger_driver = {
 	.probe = stm32_timer_trigger_probe,
+	.remove = stm32_timer_trigger_remove,
 	.driver = {
 		.name = "stm32-timer-trigger",
 		.of_match_table = stm32_trig_of_match,
+		.pm = pm_sleep_ptr(&stm32_timer_trigger_pm_ops),
 	},
 };
 module_platform_driver(stm32_timer_trigger_driver);
 
-MODULE_ALIAS("platform: stm32-timer-trigger");
+MODULE_ALIAS("platform:stm32-timer-trigger");
 MODULE_DESCRIPTION("STMicroelectronics STM32 Timer Trigger driver");
 MODULE_LICENSE("GPL v2");