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-rw-r--r--drivers/iio/adc/Kconfig35
-rw-r--r--drivers/iio/adc/Makefile3
-rw-r--r--drivers/iio/adc/ad7266.c1
-rw-r--r--drivers/iio/adc/ad7298.c1
-rw-r--r--drivers/iio/adc/ad7476.c1
-rw-r--r--drivers/iio/adc/ad7791.c1
-rw-r--r--drivers/iio/adc/ad7793.c3
-rw-r--r--drivers/iio/adc/ad7887.c1
-rw-r--r--drivers/iio/adc/ad7923.c1
-rw-r--r--drivers/iio/adc/ad799x.c1
-rw-r--r--drivers/iio/adc/berlin2-adc.c91
-rw-r--r--drivers/iio/adc/hi8435.c534
-rw-r--r--drivers/iio/adc/max1027.c2
-rw-r--r--drivers/iio/adc/max1363.c1
-rw-r--r--drivers/iio/adc/mcp320x.c2
-rw-r--r--drivers/iio/adc/ti-adc128s052.c9
-rw-r--r--drivers/iio/adc/twl4030-madc.c34
-rw-r--r--drivers/iio/adc/twl6030-gpadc.c1
-rw-r--r--drivers/iio/adc/vf610_adc.c123
-rw-r--r--drivers/iio/adc/xilinx-xadc-core.c38
-rw-r--r--drivers/iio/adc/xilinx-xadc.h2
21 files changed, 775 insertions, 110 deletions
diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig
index 50c103d75af9..7868c744fd4b 100644
--- a/drivers/iio/adc/Kconfig
+++ b/drivers/iio/adc/Kconfig
@@ -149,6 +149,17 @@ config BERLIN2_ADC
Marvell Berlin2 ADC driver. This ADC has 8 channels, with one used for
temperature measurement.
+config CC10001_ADC
+ tristate "Cosmic Circuits 10001 ADC driver"
+ depends on HAS_IOMEM && HAVE_CLK && REGULATOR
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
+ help
+ Say yes here to build support for Cosmic Circuits 10001 ADC.
+
+ This driver can also be built as a module. If so, the module will be
+ called cc10001_adc.
+
config DA9150_GPADC
tristate "Dialog DA9150 GPADC driver support"
depends on MFD_DA9150
@@ -161,17 +172,6 @@ config DA9150_GPADC
To compile this driver as a module, choose M here: the module will be
called berlin2-adc.
-config CC10001_ADC
- tristate "Cosmic Circuits 10001 ADC driver"
- depends on HAS_IOMEM && HAVE_CLK && REGULATOR
- select IIO_BUFFER
- select IIO_TRIGGERED_BUFFER
- help
- Say yes here to build support for Cosmic Circuits 10001 ADC.
-
- This driver can also be built as a module. If so, the module will be
- called cc10001_adc.
-
config EXYNOS_ADC
tristate "Exynos ADC driver support"
depends on ARCH_EXYNOS || ARCH_S3C24XX || ARCH_S3C64XX || (OF && COMPILE_TEST)
@@ -183,6 +183,17 @@ config EXYNOS_ADC
To compile this driver as a module, choose M here: the module will be
called exynos_adc.
+config HI8435
+ tristate "Holt Integrated Circuits HI-8435 threshold detector"
+ select IIO_TRIGGERED_EVENT
+ depends on SPI
+ help
+ If you say yes here you get support for Holt Integrated Circuits
+ HI-8435 chip.
+
+ This driver can also be built as a module. If so, the module will be
+ called hi8435.
+
config LP8788_ADC
tristate "LP8788 ADC driver"
depends on MFD_LP8788
@@ -361,6 +372,8 @@ config TWL6030_GPADC
config VF610_ADC
tristate "Freescale vf610 ADC driver"
depends on OF
+ select IIO_BUFFER
+ select IIO_TRIGGERED_BUFFER
help
Say yes here to support for Vybrid board analog-to-digital converter.
Since the IP is used for i.MX6SLX, the driver also support i.MX6SLX.
diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile
index a0962103e866..99b37a963a1e 100644
--- a/drivers/iio/adc/Makefile
+++ b/drivers/iio/adc/Makefile
@@ -16,9 +16,10 @@ obj-$(CONFIG_AD799X) += ad799x.o
obj-$(CONFIG_AT91_ADC) += at91_adc.o
obj-$(CONFIG_AXP288_ADC) += axp288_adc.o
obj-$(CONFIG_BERLIN2_ADC) += berlin2-adc.o
-obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o
obj-$(CONFIG_CC10001_ADC) += cc10001_adc.o
+obj-$(CONFIG_DA9150_GPADC) += da9150-gpadc.o
obj-$(CONFIG_EXYNOS_ADC) += exynos_adc.o
+obj-$(CONFIG_HI8435) += hi8435.o
obj-$(CONFIG_LP8788_ADC) += lp8788_adc.o
obj-$(CONFIG_MAX1027) += max1027.o
obj-$(CONFIG_MAX1363) += max1363.o
diff --git a/drivers/iio/adc/ad7266.c b/drivers/iio/adc/ad7266.c
index 70f78c3062a7..21e19b60e2b9 100644
--- a/drivers/iio/adc/ad7266.c
+++ b/drivers/iio/adc/ad7266.c
@@ -509,7 +509,6 @@ MODULE_DEVICE_TABLE(spi, ad7266_id);
static struct spi_driver ad7266_driver = {
.driver = {
.name = "ad7266",
- .owner = THIS_MODULE,
},
.probe = ad7266_probe,
.remove = ad7266_remove,
diff --git a/drivers/iio/adc/ad7298.c b/drivers/iio/adc/ad7298.c
index 4a8c0a2f49b6..62bb8f7ce4a0 100644
--- a/drivers/iio/adc/ad7298.c
+++ b/drivers/iio/adc/ad7298.c
@@ -378,7 +378,6 @@ MODULE_DEVICE_TABLE(spi, ad7298_id);
static struct spi_driver ad7298_driver = {
.driver = {
.name = "ad7298",
- .owner = THIS_MODULE,
},
.probe = ad7298_probe,
.remove = ad7298_remove,
diff --git a/drivers/iio/adc/ad7476.c b/drivers/iio/adc/ad7476.c
index ce400ec176f1..be85c2a0ad97 100644
--- a/drivers/iio/adc/ad7476.c
+++ b/drivers/iio/adc/ad7476.c
@@ -302,7 +302,6 @@ MODULE_DEVICE_TABLE(spi, ad7476_id);
static struct spi_driver ad7476_driver = {
.driver = {
.name = "ad7476",
- .owner = THIS_MODULE,
},
.probe = ad7476_probe,
.remove = ad7476_remove,
diff --git a/drivers/iio/adc/ad7791.c b/drivers/iio/adc/ad7791.c
index c19f8fd1b4b7..cf172d58cd44 100644
--- a/drivers/iio/adc/ad7791.c
+++ b/drivers/iio/adc/ad7791.c
@@ -440,7 +440,6 @@ MODULE_DEVICE_TABLE(spi, ad7791_spi_ids);
static struct spi_driver ad7791_driver = {
.driver = {
.name = "ad7791",
- .owner = THIS_MODULE,
},
.probe = ad7791_probe,
.remove = ad7791_remove,
diff --git a/drivers/iio/adc/ad7793.c b/drivers/iio/adc/ad7793.c
index b84922a4b32e..4d960d3b93c0 100644
--- a/drivers/iio/adc/ad7793.c
+++ b/drivers/iio/adc/ad7793.c
@@ -101,7 +101,7 @@
#define AD7795_CH_AIN1M_AIN1M 8 /* AIN1(-) - AIN1(-) */
/* ID Register Bit Designations (AD7793_REG_ID) */
-#define AD7785_ID 0xB
+#define AD7785_ID 0x3
#define AD7792_ID 0xA
#define AD7793_ID 0xB
#define AD7794_ID 0xF
@@ -852,7 +852,6 @@ MODULE_DEVICE_TABLE(spi, ad7793_id);
static struct spi_driver ad7793_driver = {
.driver = {
.name = "ad7793",
- .owner = THIS_MODULE,
},
.probe = ad7793_probe,
.remove = ad7793_remove,
diff --git a/drivers/iio/adc/ad7887.c b/drivers/iio/adc/ad7887.c
index 2fd012ee99f5..2d3c397e66ad 100644
--- a/drivers/iio/adc/ad7887.c
+++ b/drivers/iio/adc/ad7887.c
@@ -356,7 +356,6 @@ MODULE_DEVICE_TABLE(spi, ad7887_id);
static struct spi_driver ad7887_driver = {
.driver = {
.name = "ad7887",
- .owner = THIS_MODULE,
},
.probe = ad7887_probe,
.remove = ad7887_remove,
diff --git a/drivers/iio/adc/ad7923.c b/drivers/iio/adc/ad7923.c
index 28732c28e819..45e29ccd824f 100644
--- a/drivers/iio/adc/ad7923.c
+++ b/drivers/iio/adc/ad7923.c
@@ -357,7 +357,6 @@ MODULE_DEVICE_TABLE(spi, ad7923_id);
static struct spi_driver ad7923_driver = {
.driver = {
.name = "ad7923",
- .owner = THIS_MODULE,
},
.probe = ad7923_probe,
.remove = ad7923_remove,
diff --git a/drivers/iio/adc/ad799x.c b/drivers/iio/adc/ad799x.c
index b99de00e57b8..01d71588d752 100644
--- a/drivers/iio/adc/ad799x.c
+++ b/drivers/iio/adc/ad799x.c
@@ -528,7 +528,6 @@ static struct attribute *ad799x_event_attributes[] = {
static struct attribute_group ad799x_event_attrs_group = {
.attrs = ad799x_event_attributes,
- .name = "events",
};
static const struct iio_info ad7991_info = {
diff --git a/drivers/iio/adc/berlin2-adc.c b/drivers/iio/adc/berlin2-adc.c
index 4946d9bf1764..71c806ecc722 100644
--- a/drivers/iio/adc/berlin2-adc.c
+++ b/drivers/iio/adc/berlin2-adc.c
@@ -27,13 +27,13 @@
#define BERLIN2_SM_CTRL_SM_SOC_INT BIT(1)
#define BERLIN2_SM_CTRL_SOC_SM_INT BIT(2)
#define BERLIN2_SM_CTRL_ADC_SEL(x) ((x) << 5) /* 0-15 */
-#define BERLIN2_SM_CTRL_ADC_SEL_MASK (0xf << 5)
+#define BERLIN2_SM_CTRL_ADC_SEL_MASK GENMASK(8, 5)
#define BERLIN2_SM_CTRL_ADC_POWER BIT(9)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV2 (0x0 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV3 (0x1 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV4 (0x2 << 10)
#define BERLIN2_SM_CTRL_ADC_CLKSEL_DIV8 (0x3 << 10)
-#define BERLIN2_SM_CTRL_ADC_CLKSEL_MASK (0x3 << 10)
+#define BERLIN2_SM_CTRL_ADC_CLKSEL_MASK GENMASK(11, 10)
#define BERLIN2_SM_CTRL_ADC_START BIT(12)
#define BERLIN2_SM_CTRL_ADC_RESET BIT(13)
#define BERLIN2_SM_CTRL_ADC_BANDGAP_RDY BIT(14)
@@ -50,7 +50,7 @@
#define BERLIN2_SM_CTRL_TSEN_MODE_10_50 (0x1 << 22) /* 10-50 C */
#define BERLIN2_SM_CTRL_TSEN_RESET BIT(29)
#define BERLIN2_SM_ADC_DATA 0x20
-#define BERLIN2_SM_ADC_MASK 0x3ff
+#define BERLIN2_SM_ADC_MASK GENMASK(9, 0)
#define BERLIN2_SM_ADC_STATUS 0x1c
#define BERLIN2_SM_ADC_STATUS_DATA_RDY(x) BIT(x) /* 0-15 */
#define BERLIN2_SM_ADC_STATUS_DATA_RDY_MASK GENMASK(15, 0)
@@ -65,9 +65,9 @@
#define BERLIN2_SM_TSEN_CTRL_START BIT(8)
#define BERLIN2_SM_TSEN_CTRL_SETTLING_4 (0x0 << 21) /* 4 us */
#define BERLIN2_SM_TSEN_CTRL_SETTLING_12 (0x1 << 21) /* 12 us */
-#define BERLIN2_SM_TSEN_CTRL_SETTLING_MASK (0x1 << 21)
+#define BERLIN2_SM_TSEN_CTRL_SETTLING_MASK BIT(21)
#define BERLIN2_SM_TSEN_CTRL_TRIM(x) ((x) << 22)
-#define BERLIN2_SM_TSEN_CTRL_TRIM_MASK (0xf << 22)
+#define BERLIN2_SM_TSEN_CTRL_TRIM_MASK GENMASK(25, 22)
struct berlin2_adc_priv {
struct regmap *regmap;
@@ -78,13 +78,13 @@ struct berlin2_adc_priv {
};
#define BERLIN2_ADC_CHANNEL(n, t) \
- { \
- .channel = n, \
- .datasheet_name = "channel"#n, \
- .type = t, \
- .indexed = 1, \
- .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
- }
+ { \
+ .channel = n, \
+ .datasheet_name = "channel"#n, \
+ .type = t, \
+ .indexed = 1, \
+ .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
+ }
static const struct iio_chan_spec berlin2_adc_channels[] = {
BERLIN2_ADC_CHANNEL(0, IIO_VOLTAGE), /* external input */
@@ -111,18 +111,24 @@ static int berlin2_adc_read(struct iio_dev *indio_dev, int channel)
mutex_lock(&priv->lock);
+ /* Enable the interrupts */
+ regmap_write(priv->regmap, BERLIN2_SM_ADC_STATUS,
+ BERLIN2_SM_ADC_STATUS_INT_EN(channel));
+
/* Configure the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
- BERLIN2_SM_CTRL_ADC_RESET | BERLIN2_SM_CTRL_ADC_SEL_MASK
- | BERLIN2_SM_CTRL_ADC_START,
- BERLIN2_SM_CTRL_ADC_SEL(channel) | BERLIN2_SM_CTRL_ADC_START);
+ BERLIN2_SM_CTRL_ADC_RESET |
+ BERLIN2_SM_CTRL_ADC_SEL_MASK |
+ BERLIN2_SM_CTRL_ADC_START,
+ BERLIN2_SM_CTRL_ADC_SEL(channel) |
+ BERLIN2_SM_CTRL_ADC_START);
ret = wait_event_interruptible_timeout(priv->wq, priv->data_available,
- msecs_to_jiffies(1000));
+ msecs_to_jiffies(1000));
/* Disable the interrupts */
regmap_update_bits(priv->regmap, BERLIN2_SM_ADC_STATUS,
- BERLIN2_SM_ADC_STATUS_INT_EN(channel), 0);
+ BERLIN2_SM_ADC_STATUS_INT_EN(channel), 0);
if (ret == 0)
ret = -ETIMEDOUT;
@@ -132,7 +138,7 @@ static int berlin2_adc_read(struct iio_dev *indio_dev, int channel)
}
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
- BERLIN2_SM_CTRL_ADC_START, 0);
+ BERLIN2_SM_CTRL_ADC_START, 0);
data = priv->data;
priv->data_available = false;
@@ -149,24 +155,31 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev)
mutex_lock(&priv->lock);
+ /* Enable interrupts */
+ regmap_write(priv->regmap, BERLIN2_SM_TSEN_STATUS,
+ BERLIN2_SM_TSEN_STATUS_INT_EN);
+
/* Configure the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
- BERLIN2_SM_CTRL_TSEN_RESET | BERLIN2_SM_CTRL_ADC_ROTATE,
- BERLIN2_SM_CTRL_ADC_ROTATE);
+ BERLIN2_SM_CTRL_TSEN_RESET |
+ BERLIN2_SM_CTRL_ADC_ROTATE,
+ BERLIN2_SM_CTRL_ADC_ROTATE);
/* Configure the temperature sensor */
regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_CTRL,
- BERLIN2_SM_TSEN_CTRL_TRIM_MASK | BERLIN2_SM_TSEN_CTRL_SETTLING_MASK
- | BERLIN2_SM_TSEN_CTRL_START,
- BERLIN2_SM_TSEN_CTRL_TRIM(3) | BERLIN2_SM_TSEN_CTRL_SETTLING_12
- | BERLIN2_SM_TSEN_CTRL_START);
+ BERLIN2_SM_TSEN_CTRL_TRIM_MASK |
+ BERLIN2_SM_TSEN_CTRL_SETTLING_MASK |
+ BERLIN2_SM_TSEN_CTRL_START,
+ BERLIN2_SM_TSEN_CTRL_TRIM(3) |
+ BERLIN2_SM_TSEN_CTRL_SETTLING_12 |
+ BERLIN2_SM_TSEN_CTRL_START);
ret = wait_event_interruptible_timeout(priv->wq, priv->data_available,
- msecs_to_jiffies(1000));
+ msecs_to_jiffies(1000));
/* Disable interrupts */
regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_STATUS,
- BERLIN2_SM_TSEN_STATUS_INT_EN, 0);
+ BERLIN2_SM_TSEN_STATUS_INT_EN, 0);
if (ret == 0)
ret = -ETIMEDOUT;
@@ -176,7 +189,7 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev)
}
regmap_update_bits(priv->regmap, BERLIN2_SM_TSEN_CTRL,
- BERLIN2_SM_TSEN_CTRL_START, 0);
+ BERLIN2_SM_TSEN_CTRL_START, 0);
data = priv->data;
priv->data_available = false;
@@ -187,10 +200,9 @@ static int berlin2_adc_tsen_read(struct iio_dev *indio_dev)
}
static int berlin2_adc_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 berlin2_adc_priv *priv = iio_priv(indio_dev);
int temp;
switch (mask) {
@@ -198,10 +210,6 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev,
if (chan->type != IIO_VOLTAGE)
return -EINVAL;
- /* Enable the interrupts */
- regmap_write(priv->regmap, BERLIN2_SM_ADC_STATUS,
- BERLIN2_SM_ADC_STATUS_INT_EN(chan->channel));
-
*val = berlin2_adc_read(indio_dev, chan->channel);
if (*val < 0)
return *val;
@@ -211,10 +219,6 @@ static int berlin2_adc_read_raw(struct iio_dev *indio_dev,
if (chan->type != IIO_TEMP)
return -EINVAL;
- /* Enable interrupts */
- regmap_write(priv->regmap, BERLIN2_SM_TSEN_STATUS,
- BERLIN2_SM_TSEN_STATUS_INT_EN);
-
temp = berlin2_adc_tsen_read(indio_dev);
if (temp < 0)
return temp;
@@ -306,12 +310,12 @@ static int berlin2_adc_probe(struct platform_device *pdev)
return tsen_irq;
ret = devm_request_irq(&pdev->dev, irq, berlin2_adc_irq, 0,
- pdev->dev.driver->name, indio_dev);
+ pdev->dev.driver->name, indio_dev);
if (ret)
return ret;
ret = devm_request_irq(&pdev->dev, tsen_irq, berlin2_adc_tsen_irq,
- 0, pdev->dev.driver->name, indio_dev);
+ 0, pdev->dev.driver->name, indio_dev);
if (ret)
return ret;
@@ -328,13 +332,14 @@ static int berlin2_adc_probe(struct platform_device *pdev)
/* Power up the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
- BERLIN2_SM_CTRL_ADC_POWER, BERLIN2_SM_CTRL_ADC_POWER);
+ 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);
+ BERLIN2_SM_CTRL_ADC_POWER, 0);
return ret;
}
@@ -350,7 +355,7 @@ static int berlin2_adc_remove(struct platform_device *pdev)
/* Power down the ADC */
regmap_update_bits(priv->regmap, BERLIN2_SM_CTRL,
- BERLIN2_SM_CTRL_ADC_POWER, 0);
+ BERLIN2_SM_CTRL_ADC_POWER, 0);
return 0;
}
diff --git a/drivers/iio/adc/hi8435.c b/drivers/iio/adc/hi8435.c
new file mode 100644
index 000000000000..c73c6c62a6ac
--- /dev/null
+++ b/drivers/iio/adc/hi8435.c
@@ -0,0 +1,534 @@
+/*
+ * Holt Integrated Circuits HI-8435 threshold detector driver
+ *
+ * Copyright (C) 2015 Zodiac Inflight Innovations
+ * Copyright (C) 2015 Cogent Embedded, Inc.
+ *
+ * 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; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/delay.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_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/spi/spi.h>
+#include <linux/gpio/consumer.h>
+
+#define DRV_NAME "hi8435"
+
+/* Register offsets for HI-8435 */
+#define HI8435_CTRL_REG 0x02
+#define HI8435_PSEN_REG 0x04
+#define HI8435_TMDATA_REG 0x1E
+#define HI8435_GOCENHYS_REG 0x3A
+#define HI8435_SOCENHYS_REG 0x3C
+#define HI8435_SO7_0_REG 0x10
+#define HI8435_SO15_8_REG 0x12
+#define HI8435_SO23_16_REG 0x14
+#define HI8435_SO31_24_REG 0x16
+#define HI8435_SO31_0_REG 0x78
+
+#define HI8435_WRITE_OPCODE 0x00
+#define HI8435_READ_OPCODE 0x80
+
+/* CTRL register bits */
+#define HI8435_CTRL_TEST 0x01
+#define HI8435_CTRL_SRST 0x02
+
+struct hi8435_priv {
+ struct spi_device *spi;
+ struct mutex lock;
+
+ unsigned long event_scan_mask; /* soft mask/unmask channels events */
+ unsigned int event_prev_val;
+
+ 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;
+};
+
+static int hi8435_readb(struct hi8435_priv *priv, u8 reg, u8 *val)
+{
+ reg |= HI8435_READ_OPCODE;
+ return spi_write_then_read(priv->spi, &reg, 1, val, 1);
+}
+
+static int hi8435_readw(struct hi8435_priv *priv, u8 reg, u16 *val)
+{
+ int ret;
+ __be16 be_val;
+
+ reg |= HI8435_READ_OPCODE;
+ ret = spi_write_then_read(priv->spi, &reg, 1, &be_val, 2);
+ *val = be16_to_cpu(be_val);
+
+ return ret;
+}
+
+static int hi8435_readl(struct hi8435_priv *priv, u8 reg, u32 *val)
+{
+ int ret;
+ __be32 be_val;
+
+ reg |= HI8435_READ_OPCODE;
+ ret = spi_write_then_read(priv->spi, &reg, 1, &be_val, 4);
+ *val = be32_to_cpu(be_val);
+
+ return ret;
+}
+
+static int hi8435_writeb(struct hi8435_priv *priv, u8 reg, u8 val)
+{
+ priv->reg_buffer[0] = reg | HI8435_WRITE_OPCODE;
+ priv->reg_buffer[1] = val;
+
+ return spi_write(priv->spi, priv->reg_buffer, 2);
+}
+
+static int hi8435_writew(struct hi8435_priv *priv, u8 reg, u16 val)
+{
+ priv->reg_buffer[0] = reg | HI8435_WRITE_OPCODE;
+ priv->reg_buffer[1] = (val >> 8) & 0xff;
+ priv->reg_buffer[2] = val & 0xff;
+
+ return spi_write(priv->spi, priv->reg_buffer, 3);
+}
+
+static int hi8435_read_event_config(struct iio_dev *idev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir)
+{
+ struct hi8435_priv *priv = iio_priv(idev);
+
+ return !!(priv->event_scan_mask & BIT(chan->channel));
+}
+
+static int hi8435_write_event_config(struct iio_dev *idev,
+ const struct iio_chan_spec *chan,
+ enum iio_event_type type,
+ enum iio_event_direction dir, int state)
+{
+ struct hi8435_priv *priv = iio_priv(idev);
+
+ priv->event_scan_mask &= ~BIT(chan->channel);
+ if (state)
+ priv->event_scan_mask |= BIT(chan->channel);
+
+ return 0;
+}
+
+static int hi8435_read_event_value(struct iio_dev *idev,
+ 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 hi8435_priv *priv = iio_priv(idev);
+ int ret;
+ u8 mode, psen;
+ u16 reg;
+
+ ret = hi8435_readb(priv, HI8435_PSEN_REG, &psen);
+ if (ret < 0)
+ return ret;
+
+ /* Supply-Open or GND-Open sensing mode */
+ mode = !!(psen & BIT(chan->channel / 8));
+
+ ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG :
+ HI8435_GOCENHYS_REG, &reg);
+ if (ret < 0)
+ return ret;
+
+ if (dir == IIO_EV_DIR_FALLING)
+ *val = ((reg & 0xff) - (reg >> 8)) / 2;
+ else if (dir == IIO_EV_DIR_RISING)
+ *val = ((reg & 0xff) + (reg >> 8)) / 2;
+
+ return IIO_VAL_INT;
+}
+
+static int hi8435_write_event_value(struct iio_dev *idev,
+ 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 hi8435_priv *priv = iio_priv(idev);
+ int ret;
+ u8 mode, psen;
+ u16 reg;
+
+ ret = hi8435_readb(priv, HI8435_PSEN_REG, &psen);
+ if (ret < 0)
+ return ret;
+
+ /* Supply-Open or GND-Open sensing mode */
+ mode = !!(psen & BIT(chan->channel / 8));
+
+ ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG :
+ HI8435_GOCENHYS_REG, &reg);
+ if (ret < 0)
+ return ret;
+
+ if (dir == IIO_EV_DIR_FALLING) {
+ /* falling threshold range 2..21V, hysteresis minimum 2V */
+ if (val < 2 || val > 21 || (val + 2) > priv->threshold_hi[mode])
+ return -EINVAL;
+
+ if (val == priv->threshold_lo[mode])
+ return 0;
+
+ priv->threshold_lo[mode] = val;
+
+ /* hysteresis must not be odd */
+ if ((priv->threshold_hi[mode] - priv->threshold_lo[mode]) % 2)
+ priv->threshold_hi[mode]--;
+ } else if (dir == IIO_EV_DIR_RISING) {
+ /* rising threshold range 3..22V, hysteresis minimum 2V */
+ if (val < 3 || val > 22 || val < (priv->threshold_lo[mode] + 2))
+ return -EINVAL;
+
+ if (val == priv->threshold_hi[mode])
+ return 0;
+
+ priv->threshold_hi[mode] = val;
+
+ /* hysteresis must not be odd */
+ if ((priv->threshold_hi[mode] - priv->threshold_lo[mode]) % 2)
+ priv->threshold_lo[mode]++;
+ }
+
+ /* program thresholds */
+ mutex_lock(&priv->lock);
+
+ ret = hi8435_readw(priv, mode ? HI8435_SOCENHYS_REG :
+ HI8435_GOCENHYS_REG, &reg);
+ if (ret < 0) {
+ mutex_unlock(&priv->lock);
+ return ret;
+ }
+
+ /* hysteresis */
+ reg = priv->threshold_hi[mode] - priv->threshold_lo[mode];
+ reg <<= 8;
+ /* threshold center */
+ reg |= (priv->threshold_hi[mode] + priv->threshold_lo[mode]);
+
+ ret = hi8435_writew(priv, mode ? HI8435_SOCENHYS_REG :
+ HI8435_GOCENHYS_REG, reg);
+
+ mutex_unlock(&priv->lock);
+
+ return ret;
+}
+
+static int hi8435_debugfs_reg_access(struct iio_dev *idev,
+ unsigned reg, unsigned writeval,
+ unsigned *readval)
+{
+ struct hi8435_priv *priv = iio_priv(idev);
+ int ret;
+ u8 val;
+
+ if (readval != NULL) {
+ ret = hi8435_readb(priv, reg, &val);
+ *readval = val;
+ } else {
+ val = (u8)writeval;
+ ret = hi8435_writeb(priv, reg, val);
+ }
+
+ return ret;
+}
+
+static const struct iio_event_spec hi8435_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 int hi8435_get_sensing_mode(struct iio_dev *idev,
+ const struct iio_chan_spec *chan)
+{
+ struct hi8435_priv *priv = iio_priv(idev);
+ int ret;
+ u8 reg;
+
+ ret = hi8435_readb(priv, HI8435_PSEN_REG, &reg);
+ if (ret < 0)
+ return ret;
+
+ return !!(reg & BIT(chan->channel / 8));
+}
+
+static int hi8435_set_sensing_mode(struct iio_dev *idev,
+ const struct iio_chan_spec *chan,
+ unsigned int mode)
+{
+ struct hi8435_priv *priv = iio_priv(idev);
+ int ret;
+ u8 reg;
+
+ mutex_lock(&priv->lock);
+
+ ret = hi8435_readb(priv, HI8435_PSEN_REG, &reg);
+ if (ret < 0) {
+ mutex_unlock(&priv->lock);
+ return ret;
+ }
+
+ reg &= ~BIT(chan->channel / 8);
+ if (mode)
+ reg |= BIT(chan->channel / 8);
+
+ ret = hi8435_writeb(priv, HI8435_PSEN_REG, reg);
+
+ mutex_unlock(&priv->lock);
+
+ return ret;
+}
+
+static const char * const hi8435_sensing_modes[] = { "GND-Open",
+ "Supply-Open" };
+
+static const struct iio_enum hi8435_sensing_mode = {
+ .items = hi8435_sensing_modes,
+ .num_items = ARRAY_SIZE(hi8435_sensing_modes),
+ .get = hi8435_get_sensing_mode,
+ .set = hi8435_set_sensing_mode,
+};
+
+static const struct iio_chan_spec_ext_info hi8435_ext_info[] = {
+ IIO_ENUM("sensing_mode", IIO_SEPARATE, &hi8435_sensing_mode),
+ {},
+};
+
+#define HI8435_VOLTAGE_CHANNEL(num) \
+{ \
+ .type = IIO_VOLTAGE, \
+ .indexed = 1, \
+ .channel = num, \
+ .event_spec = hi8435_events, \
+ .num_event_specs = ARRAY_SIZE(hi8435_events), \
+ .ext_info = hi8435_ext_info, \
+}
+
+static const struct iio_chan_spec hi8435_channels[] = {
+ HI8435_VOLTAGE_CHANNEL(0),
+ HI8435_VOLTAGE_CHANNEL(1),
+ HI8435_VOLTAGE_CHANNEL(2),
+ HI8435_VOLTAGE_CHANNEL(3),
+ HI8435_VOLTAGE_CHANNEL(4),
+ HI8435_VOLTAGE_CHANNEL(5),
+ HI8435_VOLTAGE_CHANNEL(6),
+ HI8435_VOLTAGE_CHANNEL(7),
+ HI8435_VOLTAGE_CHANNEL(8),
+ HI8435_VOLTAGE_CHANNEL(9),
+ HI8435_VOLTAGE_CHANNEL(10),
+ HI8435_VOLTAGE_CHANNEL(11),
+ HI8435_VOLTAGE_CHANNEL(12),
+ HI8435_VOLTAGE_CHANNEL(13),
+ HI8435_VOLTAGE_CHANNEL(14),
+ HI8435_VOLTAGE_CHANNEL(15),
+ HI8435_VOLTAGE_CHANNEL(16),
+ HI8435_VOLTAGE_CHANNEL(17),
+ HI8435_VOLTAGE_CHANNEL(18),
+ HI8435_VOLTAGE_CHANNEL(19),
+ HI8435_VOLTAGE_CHANNEL(20),
+ HI8435_VOLTAGE_CHANNEL(21),
+ HI8435_VOLTAGE_CHANNEL(22),
+ HI8435_VOLTAGE_CHANNEL(23),
+ HI8435_VOLTAGE_CHANNEL(24),
+ HI8435_VOLTAGE_CHANNEL(25),
+ HI8435_VOLTAGE_CHANNEL(26),
+ HI8435_VOLTAGE_CHANNEL(27),
+ HI8435_VOLTAGE_CHANNEL(28),
+ HI8435_VOLTAGE_CHANNEL(29),
+ HI8435_VOLTAGE_CHANNEL(30),
+ HI8435_VOLTAGE_CHANNEL(31),
+ IIO_CHAN_SOFT_TIMESTAMP(32),
+};
+
+static const struct iio_info hi8435_info = {
+ .driver_module = THIS_MODULE,
+ .read_event_config = &hi8435_read_event_config,
+ .write_event_config = hi8435_write_event_config,
+ .read_event_value = &hi8435_read_event_value,
+ .write_event_value = &hi8435_write_event_value,
+ .debugfs_reg_access = &hi8435_debugfs_reg_access,
+};
+
+static void hi8435_iio_push_event(struct iio_dev *idev, unsigned int val)
+{
+ struct hi8435_priv *priv = iio_priv(idev);
+ enum iio_event_direction dir;
+ unsigned int i;
+ unsigned int status = priv->event_prev_val ^ val;
+
+ if (!status)
+ return;
+
+ for_each_set_bit(i, &priv->event_scan_mask, 32) {
+ if (status & BIT(i)) {
+ dir = val & BIT(i) ? IIO_EV_DIR_RISING :
+ IIO_EV_DIR_FALLING;
+ iio_push_event(idev,
+ IIO_UNMOD_EVENT_CODE(IIO_VOLTAGE, i,
+ IIO_EV_TYPE_THRESH, dir),
+ iio_get_time_ns());
+ }
+ }
+
+ priv->event_prev_val = val;
+}
+
+static irqreturn_t hi8435_trigger_handler(int irq, void *private)
+{
+ struct iio_poll_func *pf = private;
+ struct iio_dev *idev = pf->indio_dev;
+ struct hi8435_priv *priv = iio_priv(idev);
+ u32 val;
+ int ret;
+
+ ret = hi8435_readl(priv, HI8435_SO31_0_REG, &val);
+ if (ret < 0)
+ goto err_read;
+
+ hi8435_iio_push_event(idev, val);
+
+err_read:
+ iio_trigger_notify_done(idev->trig);
+
+ return IRQ_HANDLED;
+}
+
+static int hi8435_probe(struct spi_device *spi)
+{
+ struct iio_dev *idev;
+ struct hi8435_priv *priv;
+ struct gpio_desc *reset_gpio;
+ int ret;
+
+ idev = devm_iio_device_alloc(&spi->dev, sizeof(*priv));
+ if (!idev)
+ return -ENOMEM;
+
+ priv = iio_priv(idev);
+ priv->spi = spi;
+
+ reset_gpio = devm_gpiod_get(&spi->dev, NULL, GPIOD_OUT_LOW);
+ if (IS_ERR(reset_gpio)) {
+ /* chip s/w reset if h/w reset failed */
+ hi8435_writeb(priv, HI8435_CTRL_REG, HI8435_CTRL_SRST);
+ hi8435_writeb(priv, HI8435_CTRL_REG, 0);
+ } else {
+ udelay(5);
+ gpiod_set_value(reset_gpio, 1);
+ }
+
+ spi_set_drvdata(spi, idev);
+ mutex_init(&priv->lock);
+
+ idev->dev.parent = &spi->dev;
+ idev->name = spi_get_device_id(spi)->name;
+ idev->modes = INDIO_DIRECT_MODE;
+ idev->info = &hi8435_info;
+ idev->channels = hi8435_channels;
+ idev->num_channels = ARRAY_SIZE(hi8435_channels);
+
+ /* unmask all events */
+ priv->event_scan_mask = ~(0);
+ /*
+ * There is a restriction in the chip - the hysteresis can not be odd.
+ * If the hysteresis is set to odd value then chip gets into lock state
+ * and not functional anymore.
+ * After chip reset the thresholds are in undefined state, so we need to
+ * initialize thresholds to some initial values and then prevent
+ * userspace setting odd hysteresis.
+ *
+ * Set threshold low voltage to 2V, threshold high voltage to 4V
+ * for both GND-Open and Supply-Open sensing modes.
+ */
+ priv->threshold_lo[0] = priv->threshold_lo[1] = 2;
+ priv->threshold_hi[0] = priv->threshold_hi[1] = 4;
+ hi8435_writew(priv, HI8435_GOCENHYS_REG, 0x206);
+ hi8435_writew(priv, HI8435_SOCENHYS_REG, 0x206);
+
+ ret = iio_triggered_event_setup(idev, NULL, hi8435_trigger_handler);
+ if (ret)
+ return ret;
+
+ ret = iio_device_register(idev);
+ if (ret < 0) {
+ dev_err(&spi->dev, "unable to register device\n");
+ goto unregister_triggered_event;
+ }
+
+ return 0;
+
+unregister_triggered_event:
+ iio_triggered_event_cleanup(idev);
+ return ret;
+}
+
+static int hi8435_remove(struct spi_device *spi)
+{
+ struct iio_dev *idev = spi_get_drvdata(spi);
+
+ iio_device_unregister(idev);
+ iio_triggered_event_cleanup(idev);
+
+ return 0;
+}
+
+static const struct of_device_id hi8435_dt_ids[] = {
+ { .compatible = "holt,hi8435" },
+ {},
+};
+MODULE_DEVICE_TABLE(of, hi8435_dt_ids);
+
+static const struct spi_device_id hi8435_id[] = {
+ { "hi8435", 0},
+ { }
+};
+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),
+ },
+ .probe = hi8435_probe,
+ .remove = hi8435_remove,
+ .id_table = hi8435_id,
+};
+module_spi_driver(hi8435_driver);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Vladimir Barinov");
+MODULE_DESCRIPTION("HI-8435 threshold detector");
diff --git a/drivers/iio/adc/max1027.c b/drivers/iio/adc/max1027.c
index 44bf815adb6c..41d495c6035e 100644
--- a/drivers/iio/adc/max1027.c
+++ b/drivers/iio/adc/max1027.c
@@ -508,7 +508,7 @@ static int max1027_remove(struct spi_device *spi)
static struct spi_driver max1027_driver = {
.driver = {
.name = "max1027",
- .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(max1027_adc_dt_ids),
},
.probe = max1027_probe,
.remove = max1027_remove,
diff --git a/drivers/iio/adc/max1363.c b/drivers/iio/adc/max1363.c
index 1b3b74be5c20..929508e5266c 100644
--- a/drivers/iio/adc/max1363.c
+++ b/drivers/iio/adc/max1363.c
@@ -1007,7 +1007,6 @@ static struct attribute *max1363_event_attributes[] = {
static struct attribute_group max1363_event_attribute_group = {
.attrs = max1363_event_attributes,
- .name = "events",
};
static int max1363_update_scan_mode(struct iio_dev *indio_dev,
diff --git a/drivers/iio/adc/mcp320x.c b/drivers/iio/adc/mcp320x.c
index b19e4f9d16e0..8569c8e1f4b2 100644
--- a/drivers/iio/adc/mcp320x.c
+++ b/drivers/iio/adc/mcp320x.c
@@ -404,7 +404,7 @@ MODULE_DEVICE_TABLE(spi, mcp320x_id);
static struct spi_driver mcp320x_driver = {
.driver = {
.name = "mcp320x",
- .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(mcp320x_dt_ids),
},
.probe = mcp320x_probe,
.remove = mcp320x_remove,
diff --git a/drivers/iio/adc/ti-adc128s052.c b/drivers/iio/adc/ti-adc128s052.c
index 915be6b60097..ff6f7f63c8d9 100644
--- a/drivers/iio/adc/ti-adc128s052.c
+++ b/drivers/iio/adc/ti-adc128s052.c
@@ -174,6 +174,13 @@ static int adc128_remove(struct spi_device *spi)
return 0;
}
+static const struct of_device_id adc128_of_match[] = {
+ { .compatible = "ti,adc128s052", },
+ { .compatible = "ti,adc122s021", },
+ { /* sentinel */ },
+};
+MODULE_DEVICE_TABLE(of, adc128_of_match);
+
static const struct spi_device_id adc128_id[] = {
{ "adc128s052", 0}, /* index into adc128_config */
{ "adc122s021", 1},
@@ -184,7 +191,7 @@ MODULE_DEVICE_TABLE(spi, adc128_id);
static struct spi_driver adc128_driver = {
.driver = {
.name = "adc128s052",
- .owner = THIS_MODULE,
+ .of_match_table = of_match_ptr(adc128_of_match),
},
.probe = adc128_probe,
.remove = adc128_remove,
diff --git a/drivers/iio/adc/twl4030-madc.c b/drivers/iio/adc/twl4030-madc.c
index ebe415f10640..0c74869a540a 100644
--- a/drivers/iio/adc/twl4030-madc.c
+++ b/drivers/iio/adc/twl4030-madc.c
@@ -45,13 +45,18 @@
#include <linux/types.h>
#include <linux/gfp.h>
#include <linux/err.h>
+#include <linux/regulator/consumer.h>
#include <linux/iio/iio.h>
+#define TWL4030_USB_SEL_MADC_MCPC (1<<3)
+#define TWL4030_USB_CARKIT_ANA_CTRL 0xBB
+
/**
* 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
* @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
@@ -60,6 +65,7 @@
struct twl4030_madc_data {
struct device *dev;
struct mutex lock; /* mutex protecting this data structure */
+ struct regulator *usb3v1;
struct twl4030_madc_request requests[TWL4030_MADC_NUM_METHODS];
bool use_second_irq;
u8 imr;
@@ -841,6 +847,32 @@ static int twl4030_madc_probe(struct platform_device *pdev)
}
twl4030_madc = madc;
+ /* Configure MADC[3:6] */
+ ret = twl_i2c_read_u8(TWL_MODULE_USB, &regval,
+ TWL4030_USB_CARKIT_ANA_CTRL);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to read reg CARKIT_ANA_CTRL 0x%X\n",
+ TWL4030_USB_CARKIT_ANA_CTRL);
+ goto err_i2c;
+ }
+ regval |= TWL4030_USB_SEL_MADC_MCPC;
+ ret = twl_i2c_write_u8(TWL_MODULE_USB, regval,
+ TWL4030_USB_CARKIT_ANA_CTRL);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to write reg CARKIT_ANA_CTRL 0x%X\n",
+ TWL4030_USB_CARKIT_ANA_CTRL);
+ goto err_i2c;
+ }
+
+ /* Enable 3v1 bias regulator for MADC[3:6] */
+ madc->usb3v1 = devm_regulator_get(madc->dev, "vusb3v1");
+ if (IS_ERR(madc->usb3v1))
+ return -ENODEV;
+
+ ret = regulator_enable(madc->usb3v1);
+ if (ret)
+ dev_err(madc->dev, "could not enable 3v1 bias regulator\n");
+
ret = iio_device_register(iio_dev);
if (ret) {
dev_err(&pdev->dev, "could not register iio device\n");
@@ -866,6 +898,8 @@ static int twl4030_madc_remove(struct platform_device *pdev)
twl4030_madc_set_current_generator(madc, 0, 0);
twl4030_madc_set_power(madc, 0);
+ regulator_disable(madc->usb3v1);
+
return 0;
}
diff --git a/drivers/iio/adc/twl6030-gpadc.c b/drivers/iio/adc/twl6030-gpadc.c
index df12c57e6ce0..becbb0aef232 100644
--- a/drivers/iio/adc/twl6030-gpadc.c
+++ b/drivers/iio/adc/twl6030-gpadc.c
@@ -875,6 +875,7 @@ static const struct of_device_id of_twl6030_match_tbl[] = {
},
{ /* end */ }
};
+MODULE_DEVICE_TABLE(of, of_twl6030_match_tbl);
static int twl6030_gpadc_probe(struct platform_device *pdev)
{
diff --git a/drivers/iio/adc/vf610_adc.c b/drivers/iio/adc/vf610_adc.c
index 6bf4c20eb231..b10f629cc44b 100644
--- a/drivers/iio/adc/vf610_adc.c
+++ b/drivers/iio/adc/vf610_adc.c
@@ -34,8 +34,11 @@
#include <linux/err.h>
#include <linux/iio/iio.h>
+#include <linux/iio/buffer.h>
#include <linux/iio/sysfs.h>
-#include <linux/iio/driver.h>
+#include <linux/iio/trigger.h>
+#include <linux/iio/trigger_consumer.h>
+#include <linux/iio/triggered_buffer.h>
/* This will be the driver name the kernel reports */
#define DRIVER_NAME "vf610-adc"
@@ -103,6 +106,13 @@
#define DEFAULT_SAMPLE_TIME 1000
+/* V at 25°C of 696 mV */
+#define VF610_VTEMP25_3V0 950
+/* V at 25°C of 699 mV */
+#define VF610_VTEMP25_3V3 867
+/* Typical sensor slope coefficient at all temperatures */
+#define VF610_TEMP_SLOPE_COEFF 1840
+
enum clk_sel {
VF610_ADCIOC_BUSCLK_SET,
VF610_ADCIOC_ALTCLK_SET,
@@ -170,6 +180,7 @@ struct vf610_adc {
u32 sample_freq_avail[5];
struct completion completion;
+ u16 buffer[8];
};
static const u32 vf610_hw_avgs[] = { 1, 4, 8, 16, 32 };
@@ -193,6 +204,8 @@ static inline void vf610_adc_calculate_rates(struct vf610_adc *info)
adc_feature->clk_div = 8;
}
+ adck_rate = ipg_rate / adc_feature->clk_div;
+
/*
* Determine the long sample time adder value to be used based
* on the default minimum sample time provided.
@@ -217,7 +230,6 @@ static inline void vf610_adc_calculate_rates(struct vf610_adc *info)
* BCT (Base Conversion Time): fixed to 25 ADCK cycles for 12 bit mode
* LSTAdder(Long Sample Time): 3, 5, 7, 9, 13, 17, 21, 25 ADCK cycles
*/
- adck_rate = ipg_rate / info->adc_feature.clk_div;
for (i = 0; i < ARRAY_SIZE(vf610_hw_avgs); i++)
info->sample_freq_avail[i] =
adck_rate / (6 + vf610_hw_avgs[i] *
@@ -505,12 +517,24 @@ static const struct iio_chan_spec_ext_info vf610_ext_info[] = {
.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
BIT(IIO_CHAN_INFO_SAMP_FREQ), \
.ext_info = vf610_ext_info, \
+ .scan_index = (_idx), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 12, \
+ .storagebits = 16, \
+ }, \
}
#define VF610_ADC_TEMPERATURE_CHAN(_idx, _chan_type) { \
.type = (_chan_type), \
.channel = (_idx), \
.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), \
+ .scan_index = (_idx), \
+ .scan_type = { \
+ .sign = 'u', \
+ .realbits = 12, \
+ .storagebits = 16, \
+ }, \
}
static const struct iio_chan_spec vf610_adc_iio_channels[] = {
@@ -531,6 +555,7 @@ static const struct iio_chan_spec vf610_adc_iio_channels[] = {
VF610_ADC_CHAN(14, IIO_VOLTAGE),
VF610_ADC_CHAN(15, IIO_VOLTAGE),
VF610_ADC_TEMPERATURE_CHAN(26, IIO_TEMP),
+ IIO_CHAN_SOFT_TIMESTAMP(32),
/* sentinel */
};
@@ -559,13 +584,20 @@ static int vf610_adc_read_data(struct vf610_adc *info)
static irqreturn_t vf610_adc_isr(int irq, void *dev_id)
{
- struct vf610_adc *info = (struct vf610_adc *)dev_id;
+ struct iio_dev *indio_dev = (struct iio_dev *)dev_id;
+ struct vf610_adc *info = iio_priv(indio_dev);
int coco;
coco = readl(info->regs + VF610_REG_ADC_HS);
if (coco & VF610_ADC_HS_COCO0) {
info->value = vf610_adc_read_data(info);
- complete(&info->completion);
+ if (iio_buffer_enabled(indio_dev)) {
+ info->buffer[0] = info->value;
+ iio_push_to_buffers_with_timestamp(indio_dev,
+ info->buffer, iio_get_time_ns());
+ iio_trigger_notify_done(indio_dev->trig);
+ } else
+ complete(&info->completion);
}
return IRQ_HANDLED;
@@ -613,8 +645,12 @@ static int vf610_read_raw(struct iio_dev *indio_dev,
case IIO_CHAN_INFO_RAW:
case IIO_CHAN_INFO_PROCESSED:
mutex_lock(&indio_dev->mlock);
- reinit_completion(&info->completion);
+ if (iio_buffer_enabled(indio_dev)) {
+ mutex_unlock(&indio_dev->mlock);
+ return -EBUSY;
+ }
+ reinit_completion(&info->completion);
hc_cfg = VF610_ADC_ADCHC(chan->channel);
hc_cfg |= VF610_ADC_AIEN;
writel(hc_cfg, info->regs + VF610_REG_ADC_HC0);
@@ -635,11 +671,13 @@ static int vf610_read_raw(struct iio_dev *indio_dev,
break;
case IIO_TEMP:
/*
- * Calculate in degree Celsius times 1000
- * Using sensor slope of 1.84 mV/°C and
- * V at 25°C of 696 mV
- */
- *val = 25000 - ((int)info->value - 864) * 1000000 / 1840;
+ * Calculate in degree Celsius times 1000
+ * Using the typical sensor slope of 1.84 mV/°C
+ * and VREFH_ADC at 3.3V, V at 25°C of 699 mV
+ */
+ *val = 25000 - ((int)info->value - VF610_VTEMP25_3V3) *
+ 1000000 / VF610_TEMP_SLOPE_COEFF;
+
break;
default:
mutex_unlock(&indio_dev->mlock);
@@ -694,6 +732,56 @@ static int vf610_write_raw(struct iio_dev *indio_dev,
return -EINVAL;
}
+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);
+
+ channel = find_first_bit(indio_dev->active_scan_mask,
+ indio_dev->masklength);
+
+ val = VF610_ADC_ADCHC(channel);
+ val |= VF610_ADC_AIEN;
+
+ writel(val, info->regs + VF610_REG_ADC_HC0);
+
+ return 0;
+}
+
+static int vf610_adc_buffer_predisable(struct iio_dev *indio_dev)
+{
+ struct vf610_adc *info = iio_priv(indio_dev);
+ unsigned int hc_cfg = 0;
+ int val;
+
+ val = readl(info->regs + VF610_REG_ADC_GC);
+ val &= ~VF610_ADC_ADCON;
+ writel(val, info->regs + VF610_REG_ADC_GC);
+
+ hc_cfg |= VF610_ADC_CONV_DISABLE;
+ hc_cfg &= ~VF610_ADC_AIEN;
+
+ writel(hc_cfg, info->regs + VF610_REG_ADC_HC0);
+
+ return iio_triggered_buffer_predisable(indio_dev);
+}
+
+static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
+ .postenable = &vf610_adc_buffer_postenable,
+ .predisable = &vf610_adc_buffer_predisable,
+ .validate_scan_mask = &iio_validate_scan_mask_onehot,
+};
+
static int vf610_adc_reg_access(struct iio_dev *indio_dev,
unsigned reg, unsigned writeval,
unsigned *readval)
@@ -753,7 +841,7 @@ static int vf610_adc_probe(struct platform_device *pdev)
ret = devm_request_irq(info->dev, irq,
vf610_adc_isr, 0,
- dev_name(&pdev->dev), info);
+ dev_name(&pdev->dev), indio_dev);
if (ret < 0) {
dev_err(&pdev->dev, "failed requesting irq, irq = %d\n", irq);
return ret;
@@ -806,15 +894,23 @@ static int vf610_adc_probe(struct platform_device *pdev)
vf610_adc_cfg_init(info);
vf610_adc_hw_init(info);
+ ret = iio_triggered_buffer_setup(indio_dev, &iio_pollfunc_store_time,
+ NULL, &iio_triggered_buffer_setup_ops);
+ if (ret < 0) {
+ dev_err(&pdev->dev, "Couldn't initialise the buffer\n");
+ goto error_iio_device_register;
+ }
+
ret = iio_device_register(indio_dev);
if (ret) {
dev_err(&pdev->dev, "Couldn't register the device.\n");
- goto error_iio_device_register;
+ goto error_adc_buffer_init;
}
return 0;
-
+error_adc_buffer_init:
+ iio_triggered_buffer_cleanup(indio_dev);
error_iio_device_register:
clk_disable_unprepare(info->clk);
error_adc_clk_enable:
@@ -829,6 +925,7 @@ static int vf610_adc_remove(struct platform_device *pdev)
struct vf610_adc *info = iio_priv(indio_dev);
iio_device_unregister(indio_dev);
+ iio_triggered_buffer_cleanup(indio_dev);
regulator_disable(info->vref);
clk_disable_unprepare(info->clk);
diff --git a/drivers/iio/adc/xilinx-xadc-core.c b/drivers/iio/adc/xilinx-xadc-core.c
index ce93bd8e3f68..02e636a1c49a 100644
--- a/drivers/iio/adc/xilinx-xadc-core.c
+++ b/drivers/iio/adc/xilinx-xadc-core.c
@@ -273,33 +273,13 @@ static void xadc_zynq_unmask_worker(struct work_struct *work)
schedule_delayed_work(&xadc->zynq_unmask_work,
msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT));
}
-}
-
-static irqreturn_t xadc_zynq_threaded_interrupt_handler(int irq, void *devid)
-{
- struct iio_dev *indio_dev = devid;
- struct xadc *xadc = iio_priv(indio_dev);
- unsigned int alarm;
-
- spin_lock_irq(&xadc->lock);
- alarm = xadc->zynq_alarm;
- xadc->zynq_alarm = 0;
- spin_unlock_irq(&xadc->lock);
-
- xadc_handle_events(indio_dev, xadc_zynq_transform_alarm(alarm));
- /* unmask the required interrupts in timer. */
- schedule_delayed_work(&xadc->zynq_unmask_work,
- msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT));
-
- return IRQ_HANDLED;
}
static irqreturn_t xadc_zynq_interrupt_handler(int irq, void *devid)
{
struct iio_dev *indio_dev = devid;
struct xadc *xadc = iio_priv(indio_dev);
- irqreturn_t ret = IRQ_HANDLED;
uint32_t status;
xadc_read_reg(xadc, XADC_ZYNQ_REG_INTSTS, &status);
@@ -321,18 +301,23 @@ static irqreturn_t xadc_zynq_interrupt_handler(int irq, void *devid)
status &= XADC_ZYNQ_INT_ALARM_MASK;
if (status) {
- xadc->zynq_alarm |= status;
xadc->zynq_masked_alarm |= status;
/*
* mask the current event interrupt,
* unmask it when the interrupt is no more active.
*/
xadc_zynq_update_intmsk(xadc, 0, 0);
- ret = IRQ_WAKE_THREAD;
+
+ xadc_handle_events(indio_dev,
+ xadc_zynq_transform_alarm(status));
+
+ /* unmask the required interrupts in timer. */
+ schedule_delayed_work(&xadc->zynq_unmask_work,
+ msecs_to_jiffies(XADC_ZYNQ_UNMASK_TIMEOUT));
}
spin_unlock(&xadc->lock);
- return ret;
+ return IRQ_HANDLED;
}
#define XADC_ZYNQ_TCK_RATE_MAX 50000000
@@ -437,7 +422,6 @@ static const struct xadc_ops xadc_zynq_ops = {
.setup = xadc_zynq_setup,
.get_dclk_rate = xadc_zynq_get_dclk_rate,
.interrupt_handler = xadc_zynq_interrupt_handler,
- .threaded_interrupt_handler = xadc_zynq_threaded_interrupt_handler,
.update_alarm = xadc_zynq_update_alarm,
};
@@ -857,6 +841,7 @@ static int xadc_read_raw(struct iio_dev *indio_dev,
case XADC_REG_VCCINT:
case XADC_REG_VCCAUX:
case XADC_REG_VREFP:
+ case XADC_REG_VREFN:
case XADC_REG_VCCBRAM:
case XADC_REG_VCCPINT:
case XADC_REG_VCCPAUX:
@@ -1225,9 +1210,8 @@ static int xadc_probe(struct platform_device *pdev)
if (ret)
goto err_free_samplerate_trigger;
- ret = request_threaded_irq(irq, xadc->ops->interrupt_handler,
- xadc->ops->threaded_interrupt_handler,
- 0, dev_name(&pdev->dev), indio_dev);
+ ret = request_irq(irq, xadc->ops->interrupt_handler, 0,
+ dev_name(&pdev->dev), indio_dev);
if (ret)
goto err_clk_disable_unprepare;
diff --git a/drivers/iio/adc/xilinx-xadc.h b/drivers/iio/adc/xilinx-xadc.h
index 54adc5087210..f6f081965647 100644
--- a/drivers/iio/adc/xilinx-xadc.h
+++ b/drivers/iio/adc/xilinx-xadc.h
@@ -60,7 +60,6 @@ struct xadc {
enum xadc_external_mux_mode external_mux_mode;
- unsigned int zynq_alarm;
unsigned int zynq_masked_alarm;
unsigned int zynq_intmask;
struct delayed_work zynq_unmask_work;
@@ -79,7 +78,6 @@ struct xadc_ops {
void (*update_alarm)(struct xadc *, unsigned int);
unsigned long (*get_dclk_rate)(struct xadc *);
irqreturn_t (*interrupt_handler)(int, void *);
- irqreturn_t (*threaded_interrupt_handler)(int, void *);
unsigned int flags;
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.