Merge 3.1-rc4 into staging-next

This resolves a conflict with:
	drivers/staging/brcm80211/brcmsmac/types.h

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

118 files changed, 4745 insertions, 2022 deletions

diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio b/drivers/staging/iio/Documentation/sysfs-bus-iio
index 467c49a47258..c19dbf4ab249 100644
--- a/drivers/staging/iio/Documentation/sysfs-bus-iio
+++ b/drivers/staging/iio/Documentation/sysfs-bus-iio
@@ -2,7 +2,7 @@ What:		/sys/bus/iio/devices/deviceX
 KernelVersion:	2.6.35
 Contact:	linux-iio@vger.kernel.org
 Description:
-		Hardware chip or device accessed by on communication port.
+		Hardware chip or device accessed by one communication port.
 		Corresponds to a grouping of sensor channels. X is the IIO
 		index of the device.
 
@@ -711,3 +711,24 @@ Contact:	linux-iio@xxxxxxxxxxxxxxx
 Description:
 		This attribute is used to read the amount of quadrature error
 		present in the device at a given time.
+
+What:		/sys/.../iio:deviceX/ac_excitation_en
+KernelVersion:	3.1.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		This attribute, if available, is used to enable the AC
+		excitation mode found on some converters. In ac excitation mode,
+		the polarity of the excitation voltage is reversed on
+		alternate cycles, to eliminate DC errors.
+
+What:		/sys/.../iio:deviceX/bridge_switch_en
+KernelVersion:	3.1.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		This attribute, if available, is used to close or open the
+		bridge power down switch found on some converters.
+		In bridge applications, such as strain gauges and load cells,
+		the bridge itself consumes the majority of the current in the
+		system. To minimize the current consumption of the system,
+		the bridge can be disconnected (when it is not being used
+		using the bridge_switch_en attribute.
diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-adc-ad7280a b/drivers/staging/iio/Documentation/sysfs-bus-iio-adc-ad7280a
new file mode 100644
index 000000000000..863d3856718a
--- /dev/null
+++ b/drivers/staging/iio/Documentation/sysfs-bus-iio-adc-ad7280a
@@ -0,0 +1,21 @@
+What:		/sys/bus/iio/devices/deviceX/inY-inZ_balance_switch_en
+KernelVersion:	3.0.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Writing 1 enables the cell balance output switch corresponding
+		to input Y. Writing 0 disables it. If the inY-inZ_balance_timer
+		is set to a none zero value, the corresponding switch will
+		enable for the programmed amount of time, before it
+		automatically disables.
+
+What:		/sys/bus/iio/devices/deviceX/inY-inZ_balance_timer
+KernelVersion:	3.0.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		The inY-inZ_balance_timer file allows the user to program
+		individual times for each cell balance output. The AD7280A
+		allows the user to set the timer to a value from 0 minutes to
+		36.9 minutes. The resolution of the timer is 71.5 sec.
+		The value written is the on-time in milliseconds. When the
+		timer value is set 0, the timer is disabled. The cell balance
+		outputs are controlled only by inY-inZ_balance_switch_en.
diff --git a/drivers/staging/iio/Documentation/sysfs-bus-iio-impedance-analyzer-ad5933 b/drivers/staging/iio/Documentation/sysfs-bus-iio-impedance-analyzer-ad5933
new file mode 100644
index 000000000000..79c7e88c64cd
--- /dev/null
+++ b/drivers/staging/iio/Documentation/sysfs-bus-iio-impedance-analyzer-ad5933
@@ -0,0 +1,30 @@
+What:		/sys/bus/iio/devices/iio:deviceX/outY_freq_start
+KernelVersion:	3.1.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Frequency sweep start frequency in Hz.
+
+What:		/sys/bus/iio/devices/iio:deviceX/outY_freq_increment
+KernelVersion:	3.1.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Frequency increment in Hz (step size) between consecutive
+		frequency points along the sweep.
+
+What:		/sys/bus/iio/devices/iio:deviceX/outY_freq_points
+KernelVersion:	3.1.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Number of frequency points (steps) in the frequency sweep.
+		This value, in conjunction with the outY_freq_start and the
+		outY_freq_increment, determines the frequency sweep range
+		for the sweep operation.
+
+What:		/sys/bus/iio/devices/iio:deviceX/outY_settling_cycles
+KernelVersion:	3.1.0
+Contact:	linux-iio@vger.kernel.org
+Description:
+		Number of output excitation cycles (settling time cycles)
+		that are allowed to pass through the unknown impedance,
+		after each frequency increment, and before the ADC is triggered
+		to perform a conversion sequence of the response signal.
diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
index d329635fb5c4..75265678348f 100644
--- a/drivers/staging/iio/Kconfig
+++ b/drivers/staging/iio/Kconfig
@@ -62,6 +62,7 @@ source "drivers/staging/iio/addac/Kconfig"
 source "drivers/staging/iio/dac/Kconfig"
 source "drivers/staging/iio/dds/Kconfig"
 source "drivers/staging/iio/gyro/Kconfig"
+source "drivers/staging/iio/impedance-analyzer/Kconfig"
 source "drivers/staging/iio/imu/Kconfig"
 source "drivers/staging/iio/light/Kconfig"
 source "drivers/staging/iio/magnetometer/Kconfig"
diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile
index bb5c95c7d694..eaff649faf95 100644
--- a/drivers/staging/iio/Makefile
+++ b/drivers/staging/iio/Makefile
@@ -16,6 +16,7 @@ obj-y += addac/
 obj-y += dac/
 obj-y += dds/
 obj-y += gyro/
+obj-y += impedance-analyzer/
 obj-y += imu/
 obj-y += light/
 obj-y += magnetometer/
diff --git a/drivers/staging/iio/accel/accel.h b/drivers/staging/iio/accel/accel.h
deleted file mode 100644
index 50651f835cea..000000000000
--- a/drivers/staging/iio/accel/accel.h
+++ /dev/null
@@ -1,87 +0,0 @@
-
-#include "../sysfs.h"
-
-/* Accelerometer types of attribute */
-#define IIO_DEV_ATTR_ACCEL_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(accel_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_X_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(accel_x_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Y_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(accel_y_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Z_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(accel_z_offset, _mode, _show, _store, _addr)
-
-#define IIO_CONST_ATTR_ACCEL_SCALE(_string)		\
-	IIO_CONST_ATTR(accel_scale, _string)
-
-#define IIO_DEV_ATTR_ACCEL_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_X_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_x_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Y_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_y_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Z_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_z_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_X_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_x_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Y_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_y_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Z_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_z_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_X_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_x_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Y_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_y_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Z_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(accel_z_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_ACCEL(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_X(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_x_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Y(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_y_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_Z(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_z_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_XY(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_xy, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_PEAK(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_peak, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_XPEAK(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_xpeak, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_YPEAK(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_ypeak, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_ZPEAK(_show, _addr)			\
-	IIO_DEVICE_ATTR(accel_zpeak, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_XYPEAK(_show, _addr)		\
-	IIO_DEVICE_ATTR(accel_xypeak, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ACCEL_XYZPEAK(_show, _addr)		\
-	IIO_DEVICE_ATTR(accel_xyzpeak, S_IRUGO, _show, NULL, _addr)
diff --git a/drivers/staging/iio/accel/adis16201_core.c b/drivers/staging/iio/accel/adis16201_core.c
index 2fd01aecdf96..2b8c5e9c33e5 100644
--- a/drivers/staging/iio/accel/adis16201_core.c
+++ b/drivers/staging/iio/accel/adis16201_core.c
@@ -13,15 +13,12 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
 
-#include "accel.h"
-#include "inclinometer.h"
-#include "../adc/adc.h"
-
 #include "adis16201.h"
 
 enum adis16201_chan {
diff --git a/drivers/staging/iio/accel/adis16201_ring.c b/drivers/staging/iio/accel/adis16201_ring.c
index 66e708ddf8b2..4b433c53e5c5 100644
--- a/drivers/staging/iio/accel/adis16201_ring.c
+++ b/drivers/staging/iio/accel/adis16201_ring.c
@@ -1,17 +1,12 @@
 #include <linux/interrupt.h>
-#include <linux/irq.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 "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16201.h"
 
 
@@ -38,10 +33,12 @@ static int adis16201_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
 		xfers[i].cs_change = 1;
 		xfers[i].len = 2;
 		xfers[i].delay_usecs = 20;
-		xfers[i].tx_buf = st->tx + 2 * i;
-		st->tx[2 * i] = ADIS16201_READ_REG(ADIS16201_SUPPLY_OUT +
-						   2 * i);
-		st->tx[2 * i + 1] = 0;
+		if (i < ADIS16201_OUTPUTS) {
+			xfers[i].tx_buf = st->tx + 2 * i;
+			st->tx[2 * i] = ADIS16201_READ_REG(ADIS16201_SUPPLY_OUT +
+							   2 * i);
+			st->tx[2 * i + 1] = 0;
+		}
 		if (i >= 1)
 			xfers[i].rx_buf = rx + 2 * (i - 1);
 		spi_message_add_tail(&xfers[i], &msg);
@@ -62,7 +59,7 @@ static int adis16201_read_ring_data(struct iio_dev *indio_dev, u8 *rx)
 static irqreturn_t adis16201_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16201_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 
diff --git a/drivers/staging/iio/accel/adis16201_trigger.c b/drivers/staging/iio/accel/adis16201_trigger.c
index 3a95c083b452..f448258884c5 100644
--- a/drivers/staging/iio/accel/adis16201_trigger.c
+++ b/drivers/staging/iio/accel/adis16201_trigger.c
@@ -1,13 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16201.h"
 
@@ -23,6 +18,11 @@ static int adis16201_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16201_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16201_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16201_data_rdy_trigger_set_state,
+};
+
 int adis16201_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -41,9 +41,8 @@ int adis16201_probe_trigger(struct iio_dev *indio_dev)
 	if (ret)
 		goto error_free_trig;
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &adis16201_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16201_data_rdy_trigger_set_state;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/accel/adis16203_core.c b/drivers/staging/iio/accel/adis16203_core.c
index cf5d15da76ad..148367627369 100644
--- a/drivers/staging/iio/accel/adis16203_core.c
+++ b/drivers/staging/iio/accel/adis16203_core.c
@@ -13,13 +13,11 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "accel.h"
-#include "inclinometer.h"
 #include "../ring_generic.h"
-#include "../adc/adc.h"
 
 #include "adis16203.h"
 
diff --git a/drivers/staging/iio/accel/adis16203_ring.c b/drivers/staging/iio/accel/adis16203_ring.c
index d2c07c527467..993e239f9426 100644
--- a/drivers/staging/iio/accel/adis16203_ring.c
+++ b/drivers/staging/iio/accel/adis16203_ring.c
@@ -1,20 +1,12 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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 "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16203.h"
 
 /**
@@ -67,7 +59,7 @@ static int adis16203_read_ring_data(struct device *dev, u8 *rx)
 static irqreturn_t adis16203_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16203_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 
diff --git a/drivers/staging/iio/accel/adis16203_trigger.c b/drivers/staging/iio/accel/adis16203_trigger.c
index 3caf3e8bc9d9..50165f9ddc52 100644
--- a/drivers/staging/iio/accel/adis16203_trigger.c
+++ b/drivers/staging/iio/accel/adis16203_trigger.c
@@ -1,14 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16203.h"
 
@@ -24,6 +18,11 @@ static int adis16203_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16203_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16203_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16203_data_rdy_trigger_set_state,
+};
+
 int adis16203_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -44,9 +43,8 @@ int adis16203_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_trig;
 
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &adis16203_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16203_data_rdy_trigger_set_state;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/accel/adis16204_core.c b/drivers/staging/iio/accel/adis16204_core.c
index 3e2b62654b7d..445a75b1d540 100644
--- a/drivers/staging/iio/accel/adis16204_core.c
+++ b/drivers/staging/iio/accel/adis16204_core.c
@@ -17,12 +17,11 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "accel.h"
-#include "../adc/adc.h"
 
 #include "adis16204.h"
 
@@ -299,12 +298,15 @@ static int adis16204_initial_setup(struct iio_dev *indio_dev)
 err_ret:
 	return ret;
 }
+
+/* Unique to this driver currently */
+#define IIO_DEV_ATTR_ACCEL_XY(_show, _addr)			\
+	IIO_DEVICE_ATTR(accel_xy, S_IRUGO, _show, NULL, _addr)
+#define IIO_DEV_ATTR_ACCEL_XYPEAK(_show, _addr)		\
+	IIO_DEVICE_ATTR(accel_xypeak, S_IRUGO, _show, NULL, _addr)
+
 static IIO_DEV_ATTR_ACCEL_XY(adis16204_read_14bit_signed,
 		ADIS16204_XY_RSS_OUT);
-static IIO_DEV_ATTR_ACCEL_XPEAK(adis16204_read_14bit_signed,
-		ADIS16204_X_PEAK_OUT);
-static IIO_DEV_ATTR_ACCEL_YPEAK(adis16204_read_14bit_signed,
-		ADIS16204_Y_PEAK_OUT);
 static IIO_DEV_ATTR_ACCEL_XYPEAK(adis16204_read_14bit_signed,
 		ADIS16204_XY_PEAK_OUT);
 static IIO_CONST_ATTR(accel_xy_scale, "0.017125");
@@ -319,13 +321,16 @@ enum adis16204_channel {
 	accel_y,
 };
 
-static u8 adis16204_addresses[5][2] = {
+static u8 adis16204_addresses[5][3] = {
 	[in_supply] = { ADIS16204_SUPPLY_OUT },
 	[in_aux] = { ADIS16204_AUX_ADC },
 	[temp] = { ADIS16204_TEMP_OUT },
-	[accel_x] = { ADIS16204_XACCL_OUT, ADIS16204_XACCL_NULL },
-	[accel_y] = { ADIS16204_XACCL_OUT, ADIS16204_YACCL_NULL },
+	[accel_x] = { ADIS16204_XACCL_OUT, ADIS16204_XACCL_NULL,
+		      ADIS16204_X_PEAK_OUT },
+	[accel_y] = { ADIS16204_XACCL_OUT, ADIS16204_YACCL_NULL,
+		      ADIS16204_Y_PEAK_OUT },
 };
+
 static int adis16204_read_raw(struct iio_dev *indio_dev,
 			      struct iio_chan_spec const *chan,
 			      int *val, int *val2,
@@ -335,6 +340,7 @@ static int adis16204_read_raw(struct iio_dev *indio_dev,
 	int bits;
 	u8 addr;
 	s16 val16;
+	int addrind;
 
 	switch (mask) {
 	case 0:
@@ -389,15 +395,16 @@ static int adis16204_read_raw(struct iio_dev *indio_dev,
 		*val = 25;
 		return IIO_VAL_INT;
 	case (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE):
-		switch (chan->type) {
-		case IIO_ACCEL:
+	case (1 << IIO_CHAN_INFO_PEAK_SEPARATE):
+		if (mask == (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE)) {
 			bits = 12;
-			break;
-		default:
-			return -EINVAL;
-		};
+			addrind = 1;
+		} else { /* PEAK_SEPARATE */
+			bits = 14;
+			addrind = 2;
+		}
 		mutex_lock(&indio_dev->mlock);
-		addr = adis16204_addresses[chan->address][1];
+		addr = adis16204_addresses[chan->address][addrind];
 		ret = adis16204_spi_read_reg_16(indio_dev, addr, &val16);
 		if (ret) {
 			mutex_unlock(&indio_dev->mlock);
@@ -453,21 +460,22 @@ static struct iio_chan_spec adis16204_channels[] = {
 		 IIO_ST('u', 12, 16, 0), 0),
 	IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_X,
 		 (1 << IIO_CHAN_INFO_SCALE_SEPARATE) |
-		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE),
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_PEAK_SEPARATE),
 		 accel_x, ADIS16204_SCAN_ACC_X,
 		 IIO_ST('s', 14, 16, 0), 0),
 	IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Y,
 		 (1 << IIO_CHAN_INFO_SCALE_SEPARATE) |
-		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE),
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_PEAK_SEPARATE),
 		 accel_y, ADIS16204_SCAN_ACC_Y,
 		 IIO_ST('s', 14, 16, 0), 0),
 	IIO_CHAN_SOFT_TIMESTAMP(5),
 };
+
 static struct attribute *adis16204_attributes[] = {
 	&iio_dev_attr_reset.dev_attr.attr,
 	&iio_dev_attr_accel_xy.dev_attr.attr,
-	&iio_dev_attr_accel_xpeak.dev_attr.attr,
-	&iio_dev_attr_accel_ypeak.dev_attr.attr,
 	&iio_dev_attr_accel_xypeak.dev_attr.attr,
 	&iio_const_attr_accel_xy_scale.dev_attr.attr,
 	NULL
diff --git a/drivers/staging/iio/accel/adis16204_ring.c b/drivers/staging/iio/accel/adis16204_ring.c
index 852df06684d8..847f43858f50 100644
--- a/drivers/staging/iio/accel/adis16204_ring.c
+++ b/drivers/staging/iio/accel/adis16204_ring.c
@@ -1,20 +1,12 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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 "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16204.h"
 
 /**
@@ -65,7 +57,7 @@ static int adis16204_read_ring_data(struct device *dev, u8 *rx)
 static irqreturn_t adis16204_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16204_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	int i = 0;
diff --git a/drivers/staging/iio/accel/adis16204_trigger.c b/drivers/staging/iio/accel/adis16204_trigger.c
index 01f73b9b8886..55b661c98d2d 100644
--- a/drivers/staging/iio/accel/adis16204_trigger.c
+++ b/drivers/staging/iio/accel/adis16204_trigger.c
@@ -1,14 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16204.h"
 
@@ -24,6 +18,11 @@ static int adis16204_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16204_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16204_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16204_data_rdy_trigger_set_state,
+};
+
 int adis16204_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -44,9 +43,8 @@ int adis16204_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_trig;
 
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &adis16204_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16204_data_rdy_trigger_set_state;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/accel/adis16209_core.c b/drivers/staging/iio/accel/adis16209_core.c
index bec1fa8de9b9..ca671ddc152d 100644
--- a/drivers/staging/iio/accel/adis16209_core.c
+++ b/drivers/staging/iio/accel/adis16209_core.c
@@ -14,13 +14,11 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "accel.h"
-#include "inclinometer.h"
-#include "../adc/adc.h"
 
 #include "adis16209.h"
 
diff --git a/drivers/staging/iio/accel/adis16209_ring.c b/drivers/staging/iio/accel/adis16209_ring.c
index 45017d3f02f5..f889fe72f33a 100644
--- a/drivers/staging/iio/accel/adis16209_ring.c
+++ b/drivers/staging/iio/accel/adis16209_ring.c
@@ -1,20 +1,12 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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 "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16209.h"
 
 /**
@@ -65,7 +57,7 @@ static int adis16209_read_ring_data(struct device *dev, u8 *rx)
 static irqreturn_t adis16209_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16209_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 
diff --git a/drivers/staging/iio/accel/adis16209_trigger.c b/drivers/staging/iio/accel/adis16209_trigger.c
index 6df7b47ec7b4..8df8a9791d5e 100644
--- a/drivers/staging/iio/accel/adis16209_trigger.c
+++ b/drivers/staging/iio/accel/adis16209_trigger.c
@@ -1,14 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16209.h"
 
@@ -33,6 +27,11 @@ static int adis16209_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16209_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16209_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16209_data_rdy_trigger_set_state,
+};
+
 int adis16209_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -52,9 +51,8 @@ int adis16209_probe_trigger(struct iio_dev *indio_dev)
 	if (ret)
 		goto error_free_trig;
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &adis16209_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16209_data_rdy_trigger_set_state;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/accel/adis16220_core.c b/drivers/staging/iio/accel/adis16220_core.c
index bf9ba07c0383..18b0830b82f9 100644
--- a/drivers/staging/iio/accel/adis16220_core.c
+++ b/drivers/staging/iio/accel/adis16220_core.c
@@ -6,9 +6,6 @@
  * Licensed under the GPL-2 or later.
  */
 
-#include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
 #include <linux/delay.h>
 #include <linux/mutex.h>
 #include <linux/device.h>
@@ -16,12 +13,10 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
-#include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "accel.h"
-#include "../adc/adc.h"
 
 #include "adis16220.h"
 
@@ -29,16 +24,15 @@
 
 /**
  * adis16220_spi_write_reg_8() - write single byte to a register
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
+ * @indio_dev: iio device associated with child of actual device
  * @reg_address: the address of the register to be written
  * @val: the value to write
  **/
-static int adis16220_spi_write_reg_8(struct device *dev,
+static int adis16220_spi_write_reg_8(struct iio_dev *indio_dev,
 		u8 reg_address,
 		u8 val)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16220_state *st = iio_priv(indio_dev);
 
 	mutex_lock(&st->buf_lock);
@@ -53,18 +47,17 @@ static int adis16220_spi_write_reg_8(struct device *dev,
 
 /**
  * adis16220_spi_write_reg_16() - write 2 bytes to a pair of registers
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
+ * @indio_dev:  iio device associated with child of actual device
  * @reg_address: the address of the lower of the two registers. Second register
  *               is assumed to have address one greater.
  * @val: value to be written
  **/
-static int adis16220_spi_write_reg_16(struct device *dev,
+static int adis16220_spi_write_reg_16(struct iio_dev *indio_dev,
 		u8 lower_reg_address,
 		u16 value)
 {
 	int ret;
 	struct spi_message msg;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16220_state *st = iio_priv(indio_dev);
 	struct spi_transfer xfers[] = {
 		{
@@ -77,7 +70,6 @@ static int adis16220_spi_write_reg_16(struct device *dev,
 			.tx_buf = st->tx + 2,
 			.bits_per_word = 8,
 			.len = 2,
-			.cs_change = 1,
 			.delay_usecs = 35,
 		},
 	};
@@ -99,17 +91,16 @@ static int adis16220_spi_write_reg_16(struct device *dev,
 
 /**
  * adis16220_spi_read_reg_16() - read 2 bytes from a 16-bit register
- * @dev: device associated with child of actual device (iio_dev or iio_trig)
+ * @indio_dev: iio device associated with child of actual device
  * @reg_address: the address of the lower of the two registers. Second register
  *               is assumed to have address one greater.
  * @val: somewhere to pass back the value read
  **/
-static int adis16220_spi_read_reg_16(struct device *dev,
-		u8 lower_reg_address,
-		u16 *val)
+static int adis16220_spi_read_reg_16(struct iio_dev *indio_dev,
+				     u8 lower_reg_address,
+				     u16 *val)
 {
 	struct spi_message msg;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16220_state *st = iio_priv(indio_dev);
 	int ret;
 	struct spi_transfer xfers[] = {
@@ -149,52 +140,23 @@ error_ret:
 	return ret;
 }
 
-static ssize_t adis16220_spi_read_signed(struct device *dev,
-		struct device_attribute *attr,
-		char *buf,
-		unsigned bits)
-{
-	int ret;
-	s16 val = 0;
-	unsigned shift = 16 - bits;
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-
-	ret = adis16220_spi_read_reg_16(dev, this_attr->address, (u16 *)&val);
-	if (ret)
-		return ret;
-
-	val = ((s16)(val << shift) >> shift);
-	return sprintf(buf, "%d\n", val);
-}
-
-static ssize_t adis16220_read_12bit_unsigned(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	int ret;
-	u16 val = 0;
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-
-	ret = adis16220_spi_read_reg_16(dev, this_attr->address, &val);
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%u\n", val & 0x0FFF);
-}
-
 static ssize_t adis16220_read_16bit(struct device *dev,
 		struct device_attribute *attr,
 		char *buf)
 {
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	ssize_t ret;
+	s16 val = 0;
 
 	/* Take the iio_dev status lock */
 	mutex_lock(&indio_dev->mlock);
-	ret =  adis16220_spi_read_signed(dev, attr, buf, 16);
+	ret = adis16220_spi_read_reg_16(indio_dev, this_attr->address,
+					(u16 *)&val);
 	mutex_unlock(&indio_dev->mlock);
-
-	return ret;
+	if (ret)
+		return ret;
+	return sprintf(buf, "%d\n", val);
 }
 
 static ssize_t adis16220_write_16bit(struct device *dev,
@@ -202,6 +164,7 @@ static ssize_t adis16220_write_16bit(struct device *dev,
 		const char *buf,
 		size_t len)
 {
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
 	int ret;
 	long val;
@@ -209,34 +172,34 @@ static ssize_t adis16220_write_16bit(struct device *dev,
 	ret = strict_strtol(buf, 10, &val);
 	if (ret)
 		goto error_ret;
-	ret = adis16220_spi_write_reg_16(dev, this_attr->address, val);
+	ret = adis16220_spi_write_reg_16(indio_dev, this_attr->address, val);
 
 error_ret:
 	return ret ? ret : len;
 }
 
-static int adis16220_capture(struct device *dev)
+static int adis16220_capture(struct iio_dev *indio_dev)
 {
 	int ret;
-	ret = adis16220_spi_write_reg_16(dev,
+	ret = adis16220_spi_write_reg_16(indio_dev,
 			ADIS16220_GLOB_CMD,
 			0xBF08); /* initiates a manual data capture */
 	if (ret)
-		dev_err(dev, "problem beginning capture");
+		dev_err(&indio_dev->dev, "problem beginning capture");
 
 	msleep(10); /* delay for capture to finish */
 
 	return ret;
 }
 
-static int adis16220_reset(struct device *dev)
+static int adis16220_reset(struct iio_dev *indio_dev)
 {
 	int ret;
-	ret = adis16220_spi_write_reg_8(dev,
+	ret = adis16220_spi_write_reg_8(indio_dev,
 			ADIS16220_GLOB_CMD,
 			ADIS16220_GLOB_CMD_SW_RESET);
 	if (ret)
-		dev_err(dev, "problem resetting device");
+		dev_err(&indio_dev->dev, "problem resetting device");
 
 	return ret;
 }
@@ -245,72 +208,84 @@ static ssize_t adis16220_write_reset(struct device *dev,
 		struct device_attribute *attr,
 		const char *buf, size_t len)
 {
-	if (len < 1)
-		return -1;
-	switch (buf[0]) {
-	case '1':
-	case 'y':
-	case 'Y':
-		return adis16220_reset(dev) == 0 ? len : -EIO;
-	}
-	return -1;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	bool val;
+	int ret;
+
+	ret = strtobool(buf, &val);
+	if (ret)
+		return ret;
+	if (!val)
+		return -EINVAL;
+
+	ret = adis16220_reset(indio_dev);
+	if (ret)
+		return ret;
+	return len;
 }
 
 static ssize_t adis16220_write_capture(struct device *dev,
 		struct device_attribute *attr,
 		const char *buf, size_t len)
 {
-	if (len < 1)
-		return -1;
-	switch (buf[0]) {
-	case '1':
-	case 'y':
-	case 'Y':
-		return adis16220_capture(dev) == 0 ? len : -EIO;
-	}
-	return -1;
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	bool val;
+	int ret;
+
+	ret = strtobool(buf, &val);
+	if (ret)
+		return ret;
+	if (!val)
+		return -EINVAL;
+	ret = adis16220_capture(indio_dev);
+	if (ret)
+		return ret;
+
+	return len;
 }
 
-static int adis16220_check_status(struct device *dev)
+static int adis16220_check_status(struct iio_dev *indio_dev)
 {
 	u16 status;
 	int ret;
 
-	ret = adis16220_spi_read_reg_16(dev, ADIS16220_DIAG_STAT, &status);
+	ret = adis16220_spi_read_reg_16(indio_dev, ADIS16220_DIAG_STAT,
+					&status);
 
 	if (ret < 0) {
-		dev_err(dev, "Reading status failed\n");
+		dev_err(&indio_dev->dev, "Reading status failed\n");
 		goto error_ret;
 	}
 	ret = status & 0x7F;
 
 	if (status & ADIS16220_DIAG_STAT_VIOLATION)
-		dev_err(dev, "Capture period violation/interruption\n");
+		dev_err(&indio_dev->dev,
+			"Capture period violation/interruption\n");
 	if (status & ADIS16220_DIAG_STAT_SPI_FAIL)
-		dev_err(dev, "SPI failure\n");
+		dev_err(&indio_dev->dev, "SPI failure\n");
 	if (status & ADIS16220_DIAG_STAT_FLASH_UPT)
-		dev_err(dev, "Flash update failed\n");
+		dev_err(&indio_dev->dev, "Flash update failed\n");
 	if (status & ADIS16220_DIAG_STAT_POWER_HIGH)
-		dev_err(dev, "Power supply above 3.625V\n");
+		dev_err(&indio_dev->dev, "Power supply above 3.625V\n");
 	if (status & ADIS16220_DIAG_STAT_POWER_LOW)
-		dev_err(dev, "Power supply below 3.15V\n");
+		dev_err(&indio_dev->dev, "Power supply below 3.15V\n");
 
 error_ret:
 	return ret;
 }
 
-static int adis16220_self_test(struct device *dev)
+static int adis16220_self_test(struct iio_dev *indio_dev)
 {
 	int ret;
-	ret = adis16220_spi_write_reg_16(dev,
+	ret = adis16220_spi_write_reg_16(indio_dev,
 			ADIS16220_MSC_CTRL,
 			ADIS16220_MSC_CTRL_SELF_TEST_EN);
 	if (ret) {
-		dev_err(dev, "problem starting self test");
+		dev_err(&indio_dev->dev, "problem starting self test");
 		goto err_ret;
 	}
 
-	adis16220_check_status(dev);
+	adis16220_check_status(indio_dev);
 
 err_ret:
 	return ret;
@@ -319,24 +294,23 @@ err_ret:
 static int adis16220_initial_setup(struct iio_dev *indio_dev)
 {
 	int ret;
-	struct device *dev = &indio_dev->dev;
 
 	/* Do self test */
-	ret = adis16220_self_test(dev);
+	ret = adis16220_self_test(indio_dev);
 	if (ret) {
-		dev_err(dev, "self test failure");
+		dev_err(&indio_dev->dev, "self test failure");
 		goto err_ret;
 	}
 
 	/* Read status register to check the result */
-	ret = adis16220_check_status(dev);
+	ret = adis16220_check_status(indio_dev);
 	if (ret) {
-		adis16220_reset(dev);
-		dev_err(dev, "device not playing ball -> reset");
+		adis16220_reset(indio_dev);
+		dev_err(&indio_dev->dev, "device not playing ball -> reset");
 		msleep(ADIS16220_STARTUP_DELAY);
-		ret = adis16220_check_status(dev);
+		ret = adis16220_check_status(indio_dev);
 		if (ret) {
-			dev_err(dev, "giving up");
+			dev_err(&indio_dev->dev, "giving up");
 			goto err_ret;
 		}
 	}
@@ -381,7 +355,7 @@ static ssize_t adis16220_capture_buffer_read(struct iio_dev *indio_dev,
 		count = ADIS16220_CAPTURE_SIZE - off;
 
 	/* write the begin position of capture buffer */
-	ret = adis16220_spi_write_reg_16(&indio_dev->dev,
+	ret = adis16220_spi_write_reg_16(indio_dev,
 					ADIS16220_CAPT_PNTR,
 					off > 1);
 	if (ret)
@@ -480,24 +454,6 @@ static struct bin_attribute adc2_bin = {
 	.size = ADIS16220_CAPTURE_SIZE,
 };
 
-static IIO_DEV_ATTR_IN_NAMED_RAW(0, supply, adis16220_read_12bit_unsigned,
-		ADIS16220_CAPT_SUPPLY);
-static IIO_CONST_ATTR_IN_NAMED_SCALE(0, supply, "0.0012207");
-static IIO_DEV_ATTR_ACCEL(adis16220_read_16bit, ADIS16220_CAPT_BUFA);
-static IIO_DEVICE_ATTR(accel_peak_raw, S_IRUGO, adis16220_read_16bit,
-		NULL, ADIS16220_CAPT_PEAKA);
-static IIO_DEV_ATTR_ACCEL_OFFSET(S_IWUSR | S_IRUGO,
-		adis16220_read_16bit,
-		adis16220_write_16bit,
-		ADIS16220_ACCL_NULL);
-static IIO_CONST_ATTR_ACCEL_SCALE("0.18704223545");
-static IIO_DEV_ATTR_TEMP_RAW(adis16220_read_12bit_unsigned);
-static IIO_CONST_ATTR_TEMP_OFFSET("25");
-static IIO_CONST_ATTR_TEMP_SCALE("-0.47");
-
-static IIO_DEV_ATTR_IN_RAW(1, adis16220_read_16bit, ADIS16220_CAPT_BUF1);
-static IIO_DEV_ATTR_IN_RAW(2, adis16220_read_16bit, ADIS16220_CAPT_BUF2);
-
 static IIO_DEVICE_ATTR(reset, S_IWUSR, NULL,
 		adis16220_write_reset, 0);
 
@@ -514,21 +470,142 @@ static IIO_DEV_ATTR_CAPTURE_COUNT(S_IWUSR | S_IRUGO,
 		adis16220_write_16bit,
 		ADIS16220_CAPT_PNTR);
 
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100200");
+enum adis16220_channel {
+	in_supply, in_1, in_2, accel, temp
+};
+
+struct adis16220_address_spec {
+	u8 addr;
+	u8 bits;
+	bool sign;
+};
+
+/* Address / bits / signed */
+static const struct adis16220_address_spec adis16220_addresses[][3] = {
+	[in_supply] =	{ { ADIS16220_CAPT_SUPPLY,	12, 0 }, },
+	[in_1] =	{ { ADIS16220_CAPT_BUF1,	16, 1 },
+			  { ADIS16220_AIN1_NULL,	16, 1 },
+			  { ADIS16220_CAPT_PEAK1,	16, 1 }, },
+	[in_2] =	{ { ADIS16220_CAPT_BUF2,	16, 1 },
+			  { ADIS16220_AIN2_NULL,	16, 1 },
+			  { ADIS16220_CAPT_PEAK2,	16, 1 }, },
+	[accel] =	{ { ADIS16220_CAPT_BUFA,	16, 1 },
+			  { ADIS16220_ACCL_NULL,	16, 1 },
+			  { ADIS16220_CAPT_PEAKA,	16, 1 }, },
+	[temp] =	{ { ADIS16220_CAPT_TEMP,	12, 0 }, }
+};
+
+static int adis16220_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val, int *val2,
+			      long mask)
+{
+	int ret = -EINVAL;
+	int addrind = 0;
+	u16 uval;
+	s16 sval;
+	u8 bits;
+
+	switch (mask) {
+	case 0:
+		addrind = 0;
+		break;
+	case (1 << IIO_CHAN_INFO_OFFSET_SEPARATE):
+		if (chan->type == IIO_TEMP) {
+			*val = 25;
+			return IIO_VAL_INT;
+		}
+		addrind = 1;
+		break;
+	case (1 << IIO_CHAN_INFO_PEAK_SEPARATE):
+		addrind = 2;
+		break;
+	case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
+		*val = 0;
+		switch (chan->type) {
+		case IIO_TEMP:
+			*val2 = -470000;
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_ACCEL:
+			*val2 = 1887042;
+			return IIO_VAL_INT_PLUS_MICRO;
+		case IIO_IN:
+			if (chan->channel == 0)
+				*val2 = 0012221;
+			else /* Should really be dependent on VDD */
+				*val2 = 305;
+			return IIO_VAL_INT_PLUS_MICRO;
+		default:
+			return -EINVAL;
+		}
+	default:
+		return -EINVAL;
+	}
+	if (adis16220_addresses[chan->address][addrind].sign) {
+		ret = adis16220_spi_read_reg_16(indio_dev,
+						adis16220_addresses[chan
+								    ->address]
+						[addrind].addr,
+						&sval);
+		if (ret)
+			return ret;
+		bits = adis16220_addresses[chan->address][addrind].bits;
+		sval &= (1 << bits) - 1;
+		sval = (s16)(sval << (16 - bits)) >> (16 - bits);
+		*val = sval;
+		return IIO_VAL_INT;
+	} else {
+		ret = adis16220_spi_read_reg_16(indio_dev,
+						adis16220_addresses[chan
+								    ->address]
+						[addrind].addr,
+						&uval);
+		if (ret)
+			return ret;
+		bits = adis16220_addresses[chan->address][addrind].bits;
+		uval &= (1 << bits) - 1;
+		*val = uval;
+		return IIO_VAL_INT;
+	}
+}
+
+static const struct iio_chan_spec adis16220_channels[] = {
+	{
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 0,
+		.extend_name = "supply",
+		.info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		.address = in_supply,
+	}, {
+		.type = IIO_ACCEL,
+		.info_mask = (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
+			     (1 << IIO_CHAN_INFO_SCALE_SEPARATE) |
+			     (1 << IIO_CHAN_INFO_PEAK_SEPARATE),
+		.address = accel,
+	}, {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask = (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
+			     (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		.address = temp,
+	}, {
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 1,
+		.info_mask = (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
+			     (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		.address = in_1,
+	}, {
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 2,
+		.address = in_2,
+	}
+};
 
 static struct attribute *adis16220_attributes[] = {
-	&iio_dev_attr_in0_supply_raw.dev_attr.attr,
-	&iio_const_attr_in0_supply_scale.dev_attr.attr,
-	&iio_dev_attr_accel_raw.dev_attr.attr,
-	&iio_dev_attr_accel_offset.dev_attr.attr,
-	&iio_dev_attr_accel_peak_raw.dev_attr.attr,
-	&iio_const_attr_accel_scale.dev_attr.attr,
-	&iio_dev_attr_temp_raw.dev_attr.attr,
-	&iio_dev_attr_in1_raw.dev_attr.attr,
-	&iio_dev_attr_in2_raw.dev_attr.attr,
-	&iio_const_attr_temp_offset.dev_attr.attr,
-	&iio_const_attr_temp_scale.dev_attr.attr,
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
 	&iio_dev_attr_reset.dev_attr.attr,
 	&iio_dev_attr_capture.dev_attr.attr,
 	&iio_dev_attr_capture_count.dev_attr.attr,
@@ -542,7 +619,9 @@ static const struct attribute_group adis16220_attribute_group = {
 static const struct iio_info adis16220_info = {
 	.attrs = &adis16220_attribute_group,
 	.driver_module = THIS_MODULE,
+	.read_raw = &adis16220_read_raw,
 };
+
 static int __devinit adis16220_probe(struct spi_device *spi)
 {
 	int ret, regdone = 0;
@@ -567,6 +646,8 @@ static int __devinit adis16220_probe(struct spi_device *spi)
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16220_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adis16220_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adis16220_channels);
 
 	ret = iio_device_register(indio_dev);
 	if (ret)
diff --git a/drivers/staging/iio/accel/adis16240_core.c b/drivers/staging/iio/accel/adis16240_core.c
index aee8b69173c4..d485f7342f8d 100644
--- a/drivers/staging/iio/accel/adis16240_core.c
+++ b/drivers/staging/iio/accel/adis16240_core.c
@@ -17,12 +17,11 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "accel.h"
-#include "../adc/adc.h"
 
 #include "adis16240.h"
 
diff --git a/drivers/staging/iio/accel/adis16240_ring.c b/drivers/staging/iio/accel/adis16240_ring.c
index c812a34dacaf..051ba643d340 100644
--- a/drivers/staging/iio/accel/adis16240_ring.c
+++ b/drivers/staging/iio/accel/adis16240_ring.c
@@ -1,20 +1,12 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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 "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16240.h"
 
 /**
@@ -62,7 +54,7 @@ static int adis16240_read_ring_data(struct device *dev, u8 *rx)
 static irqreturn_t adis16240_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16240_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 
diff --git a/drivers/staging/iio/accel/adis16240_trigger.c b/drivers/staging/iio/accel/adis16240_trigger.c
index 17135fc33c99..13f1d142eea3 100644
--- a/drivers/staging/iio/accel/adis16240_trigger.c
+++ b/drivers/staging/iio/accel/adis16240_trigger.c
@@ -1,14 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16240.h"
 
@@ -33,6 +27,11 @@ static int adis16240_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16240_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16240_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16240_data_rdy_trigger_set_state,
+};
+
 int adis16240_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -53,9 +52,8 @@ int adis16240_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_trig;
 
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &adis16240_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16240_data_rdy_trigger_set_state;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/accel/inclinometer.h b/drivers/staging/iio/accel/inclinometer.h
deleted file mode 100644
index faf73d7892e0..000000000000
--- a/drivers/staging/iio/accel/inclinometer.h
+++ /dev/null
@@ -1,25 +0,0 @@
-/*
- * Inclinometer related attributes
- */
-#include "../sysfs.h"
-
-#define IIO_DEV_ATTR_INCLI_X(_show, _addr)			\
-	IIO_DEVICE_ATTR(incli_x_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_INCLI_Y(_show, _addr)			\
-	IIO_DEVICE_ATTR(incli_y_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_INCLI_Z(_show, _addr)			\
-	IIO_DEVICE_ATTR(incli_z_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_INCLI_X_OFFSET(_mode, _show, _store, _addr) \
-	IIO_DEVICE_ATTR(incli_x_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_INCLI_Y_OFFSET(_mode, _show, _store, _addr) \
-	IIO_DEVICE_ATTR(incli_y_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_INCLI_Z_OFFSET(_mode, _show, _store, _addr) \
-	IIO_DEVICE_ATTR(incli_z_offset, _mode, _show, _store, _addr)
-
-#define IIO_CONST_ATTR_INCLI_SCALE(_string) \
-	IIO_CONST_ATTR(incli_scale, _string)
diff --git a/drivers/staging/iio/accel/kxsd9.c b/drivers/staging/iio/accel/kxsd9.c
index c8a358a5df87..2a0565181d4d 100644
--- a/drivers/staging/iio/accel/kxsd9.c
+++ b/drivers/staging/iio/accel/kxsd9.c
@@ -21,11 +21,10 @@
 #include <linux/spi/spi.h>
 #include <linux/sysfs.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "../adc/adc.h"
-#include "accel.h"
 
 #define KXSD9_REG_X		0x00
 #define KXSD9_REG_Y		0x02
@@ -34,10 +33,6 @@
 #define KXSD9_REG_RESET		0x0a
 #define KXSD9_REG_CTRL_C	0x0c
 
-#define KXSD9_FS_8		0x00
-#define KXSD9_FS_6		0x01
-#define KXSD9_FS_4		0x02
-#define KXSD9_FS_2		0x03
 #define KXSD9_FS_MASK		0x03
 
 #define KXSD9_REG_CTRL_B	0x0d
@@ -46,13 +41,8 @@
 #define KXSD9_READ(a) (0x80 | (a))
 #define KXSD9_WRITE(a) (a)
 
-#define KXSD9_SCALE_2G "0.011978"
-#define KXSD9_SCALE_4G "0.023927"
-#define KXSD9_SCALE_6G "0.035934"
-#define KXSD9_SCALE_8G "0.047853"
-
 #define KXSD9_STATE_RX_SIZE 2
-#define KXSD9_STATE_TX_SIZE 4
+#define KXSD9_STATE_TX_SIZE 2
 /**
  * struct kxsd9_state - device related storage
  * @buf_lock:	protect the rx and tx buffers.
@@ -67,170 +57,70 @@ struct kxsd9_state {
 	u8 tx[KXSD9_STATE_TX_SIZE];
 };
 
-/* This may want to move to mili g to allow for non integer ranges */
-static ssize_t kxsd9_read_scale(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
-{
-	int ret;
-	ssize_t len = 0;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct kxsd9_state *st = iio_priv(indio_dev);
-	struct spi_transfer xfer = {
-		.bits_per_word = 8,
-		.len = 2,
-		.cs_change = 1,
-		.tx_buf = st->tx,
-		.rx_buf = st->rx,
-	};
-	struct spi_message msg;
-
-	mutex_lock(&st->buf_lock);
-	st->tx[0] = KXSD9_READ(KXSD9_REG_CTRL_C);
-	st->tx[1] = 0;
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfer, &msg);
-	ret = spi_sync(st->us, &msg);
-	if (ret)
-		goto error_ret;
-
-	switch (st->rx[1] & KXSD9_FS_MASK) {
-	case KXSD9_FS_8:
-		len += sprintf(buf, "%s\n", KXSD9_SCALE_8G);
-		break;
-	case KXSD9_FS_6:
-		len += sprintf(buf, "%s\n", KXSD9_SCALE_6G);
-		break;
-	case KXSD9_FS_4:
-		len += sprintf(buf, "%s\n", KXSD9_SCALE_4G);
-		break;
-	case KXSD9_FS_2:
-		len += sprintf(buf, "%s\n", KXSD9_SCALE_2G);
-		break;
-	}
+#define KXSD9_SCALE_2G "0.011978"
+#define KXSD9_SCALE_4G "0.023927"
+#define KXSD9_SCALE_6G "0.035934"
+#define KXSD9_SCALE_8G "0.047853"
 
-error_ret:
-	mutex_unlock(&st->buf_lock);
+/* reverse order */
+static const int kxsd9_micro_scales[4] = { 47853, 35934, 23927, 11978 };
 
-	return ret ? ret : len;
-}
-static ssize_t kxsd9_write_scale(struct device *dev,
-				 struct device_attribute *attr,
-				 const char *buf,
-				 size_t len)
+static int kxsd9_write_scale(struct iio_dev *indio_dev, int micro)
 {
-
-	struct spi_message msg;
-	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	int ret, i;
 	struct kxsd9_state *st = iio_priv(indio_dev);
-	u8 val;
-	struct spi_transfer xfers[] = {
-		{
-			.bits_per_word = 8,
-			.len = 2,
-			.cs_change = 1,
-			.tx_buf = st->tx,
-			.rx_buf = st->rx,
-		}, {
-			.bits_per_word = 8,
-			.len = 2,
-			.cs_change = 1,
-			.tx_buf = st->tx,
-		},
-	};
-
-	if (!strncmp(buf, KXSD9_SCALE_8G,
-		     strlen(buf) < strlen(KXSD9_SCALE_8G)
-		     ? strlen(buf) : strlen(KXSD9_SCALE_8G)))
-		val = KXSD9_FS_8;
-	else if (!strncmp(buf, KXSD9_SCALE_6G,
-			  strlen(buf) < strlen(KXSD9_SCALE_6G)
-			  ? strlen(buf) : strlen(KXSD9_SCALE_6G)))
-		val = KXSD9_FS_6;
-	else if (!strncmp(buf, KXSD9_SCALE_4G,
-			  strlen(buf) < strlen(KXSD9_SCALE_4G)
-			  ? strlen(buf) : strlen(KXSD9_SCALE_4G)))
-		val = KXSD9_FS_4;
-	else if (!strncmp(buf, KXSD9_SCALE_2G,
-			  strlen(buf) < strlen(KXSD9_SCALE_2G)
-			  ? strlen(buf) : strlen(KXSD9_SCALE_2G)))
-		val = KXSD9_FS_2;
-	else
+	bool foundit = false;
+
+	for (i = 0; i < 4; i++)
+		if (micro == kxsd9_micro_scales[i]) {
+			foundit = true;
+			break;
+		}
+	if (!foundit)
 		return -EINVAL;
 
 	mutex_lock(&st->buf_lock);
-	st->tx[0] = KXSD9_READ(KXSD9_REG_CTRL_C);
-	st->tx[1] = 0;
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers[0], &msg);
-	ret = spi_sync(st->us, &msg);
+	ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
 	if (ret)
 		goto error_ret;
 	st->tx[0] = KXSD9_WRITE(KXSD9_REG_CTRL_C);
-	st->tx[1] = (st->rx[1] & ~KXSD9_FS_MASK) | val;
+	st->tx[1] = (ret & ~KXSD9_FS_MASK) | i;
 
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers[1], &msg);
-	ret = spi_sync(st->us, &msg);
+	ret = spi_write(st->us, st->tx, 2);
 error_ret:
 	mutex_unlock(&st->buf_lock);
-	return ret ? ret : len;
+	return ret;
 }
 
-static ssize_t kxsd9_read_accel(struct device *dev,
-				struct device_attribute *attr,
-				char *buf)
+static int kxsd9_read(struct iio_dev *indio_dev, u8 address)
 {
 	struct spi_message msg;
 	int ret;
-	ssize_t len = 0;
-	u16 val;
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct kxsd9_state *st = iio_priv(indio_dev);
 	struct spi_transfer xfers[] = {
 		{
 			.bits_per_word = 8,
 			.len = 1,
-			.cs_change = 0,
 			.delay_usecs = 200,
 			.tx_buf = st->tx,
 		}, {
 			.bits_per_word = 8,
 			.len = 2,
-			.cs_change = 1,
 			.rx_buf = st->rx,
 		},
 	};
 
 	mutex_lock(&st->buf_lock);
-	st->tx[0] = KXSD9_READ(this_attr->address);
+	st->tx[0] = KXSD9_READ(address);
 	spi_message_init(&msg);
 	spi_message_add_tail(&xfers[0], &msg);
 	spi_message_add_tail(&xfers[1], &msg);
 	ret = spi_sync(st->us, &msg);
 	if (ret)
-		goto error_ret;
-	val = (((u16)(st->rx[0])) << 8) | (st->rx[1] & 0xF0);
-	len = sprintf(buf, "%d\n", val);
-error_ret:
-	mutex_unlock(&st->buf_lock);
-
-	return ret ? ret : len;
+		return ret;
+	return (((u16)(st->rx[0])) << 8) | (st->rx[1] & 0xF0);
 }
 
-static IIO_DEV_ATTR_ACCEL_X(kxsd9_read_accel, KXSD9_REG_X);
-static IIO_DEV_ATTR_ACCEL_Y(kxsd9_read_accel, KXSD9_REG_Y);
-static IIO_DEV_ATTR_ACCEL_Z(kxsd9_read_accel, KXSD9_REG_Z);
-static IIO_DEV_ATTR_IN_RAW(0, kxsd9_read_accel, KXSD9_REG_AUX);
-
-static IIO_DEVICE_ATTR(accel_scale,
-		S_IRUGO | S_IWUSR,
-		kxsd9_read_scale,
-		kxsd9_write_scale,
-		0);
-
 static IIO_CONST_ATTR(accel_scale_available,
 		KXSD9_SCALE_2G " "
 		KXSD9_SCALE_4G " "
@@ -238,48 +128,94 @@ static IIO_CONST_ATTR(accel_scale_available,
 		KXSD9_SCALE_8G);
 
 static struct attribute *kxsd9_attributes[] = {
-	&iio_dev_attr_accel_x_raw.dev_attr.attr,
-	&iio_dev_attr_accel_y_raw.dev_attr.attr,
-	&iio_dev_attr_accel_z_raw.dev_attr.attr,
-	&iio_dev_attr_in0_raw.dev_attr.attr,
-	&iio_dev_attr_accel_scale.dev_attr.attr,
 	&iio_const_attr_accel_scale_available.dev_attr.attr,
 	NULL,
 };
 
+static int kxsd9_write_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int val,
+			   int val2,
+			   long mask)
+{
+	int ret = -EINVAL;
+
+	if (mask == (1 << IIO_CHAN_INFO_SCALE_SHARED)) {
+		/* Check no integer component */
+		if (val)
+			return -EINVAL;
+		ret = kxsd9_write_scale(indio_dev, val2);
+	}
+
+	return ret;
+}
+
+static int kxsd9_read_raw(struct iio_dev *indio_dev,
+			  struct iio_chan_spec const *chan,
+			  int *val, int *val2, long mask)
+{
+	int ret = -EINVAL;
+	struct kxsd9_state *st = iio_priv(indio_dev);
+
+	switch (mask) {
+	case 0:
+		ret = kxsd9_read(indio_dev, chan->address);
+		if (ret < 0)
+			goto error_ret;
+		*val = ret;
+		break;
+	case (1 << IIO_CHAN_INFO_SCALE_SHARED):
+		ret = spi_w8r8(st->us, KXSD9_READ(KXSD9_REG_CTRL_C));
+		if (ret)
+			goto error_ret;
+		*val2 = kxsd9_micro_scales[ret & KXSD9_FS_MASK];
+		ret = IIO_VAL_INT_PLUS_MICRO;
+		break;
+	};
+
+error_ret:
+	return ret;
+};
+#define KXSD9_ACCEL_CHAN(axis)						\
+	{								\
+		.type = IIO_ACCEL,					\
+		.modified = 1,						\
+		.channel2 = IIO_MOD_##axis,				\
+		.info_mask = 1 << IIO_CHAN_INFO_SCALE_SHARED,		\
+		.address = KXSD9_REG_##axis,				\
+	}
+
+static struct iio_chan_spec kxsd9_channels[] = {
+	KXSD9_ACCEL_CHAN(X), KXSD9_ACCEL_CHAN(Y), KXSD9_ACCEL_CHAN(Z),
+	{
+		.type = IIO_IN,
+		.indexed = 1,
+		.address = KXSD9_REG_AUX,
+	}
+};
+
 static const struct attribute_group kxsd9_attribute_group = {
 	.attrs = kxsd9_attributes,
 };
 
 static int __devinit kxsd9_power_up(struct kxsd9_state *st)
 {
-	struct spi_transfer xfers[2] = {
-		{
-			.bits_per_word = 8,
-			.len = 2,
-			.cs_change = 1,
-			.tx_buf = st->tx,
-		}, {
-			.bits_per_word = 8,
-			.len = 2,
-			.cs_change = 1,
-			.tx_buf = st->tx + 2,
-		},
-	};
-	struct spi_message msg;
+	int ret;
+
 	st->tx[0] = 0x0d;
 	st->tx[1] = 0x40;
-	st->tx[2] = 0x0c;
-	st->tx[3] = 0x9b;
-
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers[0], &msg);
-	spi_message_add_tail(&xfers[1], &msg);
+	ret = spi_write(st->us, st->tx, 2);
+	if (ret)
+		return ret;
 
-	return spi_sync(st->us, &msg);
+	st->tx[0] = 0x0c;
+	st->tx[1] = 0x9b;
+	return spi_write(st->us, st->tx, 2);
 };
 
 static const struct iio_info kxsd9_info = {
+	.read_raw = &kxsd9_read_raw,
+	.write_raw = &kxsd9_write_raw,
 	.attrs = &kxsd9_attribute_group,
 	.driver_module = THIS_MODULE,
 };
@@ -300,7 +236,9 @@ static int __devinit kxsd9_probe(struct spi_device *spi)
 
 	st->us = spi;
 	mutex_init(&st->buf_lock);
-
+	indio_dev->channels = kxsd9_channels;
+	indio_dev->num_channels = ARRAY_SIZE(kxsd9_channels);
+	indio_dev->name = spi_get_device_id(spi)->name;
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &kxsd9_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
@@ -328,6 +266,10 @@ static int __devexit kxsd9_remove(struct spi_device *spi)
 	return 0;
 }
 
+static const struct spi_device_id kxsd9_id[] = {
+	{"kxsd9", 0}
+};
+
 static struct spi_driver kxsd9_driver = {
 	.driver = {
 		.name = "kxsd9",
@@ -335,6 +277,7 @@ static struct spi_driver kxsd9_driver = {
 	},
 	.probe = kxsd9_probe,
 	.remove = __devexit_p(kxsd9_remove),
+	.id_table = kxsd9_id,
 };
 
 static __init int kxsd9_spi_init(void)
diff --git a/drivers/staging/iio/accel/lis3l02dq_core.c b/drivers/staging/iio/accel/lis3l02dq_core.c
index a29dfd27d440..33001f8992eb 100644
--- a/drivers/staging/iio/accel/lis3l02dq_core.c
+++ b/drivers/staging/iio/accel/lis3l02dq_core.c
@@ -21,13 +21,12 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
 
-#include "accel.h"
-
 #include "lis3l02dq.h"
 
 /* At the moment the spi framework doesn't allow global setting of cs_change.
@@ -454,54 +453,54 @@ static irqreturn_t lis3l02dq_event_handler(int irq, void *private)
 
 	if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Z_HIGH)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_Z,
+						  IIO_MOD_Z,
 						  IIO_EV_TYPE_THRESH,
 						  IIO_EV_DIR_RISING),
 			       timestamp);
 
 	if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Z_LOW)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_Z,
+						  IIO_MOD_Z,
 						  IIO_EV_TYPE_THRESH,
 						  IIO_EV_DIR_FALLING),
 			       timestamp);
 
 	if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Y_HIGH)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_Y,
+						  IIO_MOD_Y,
 						  IIO_EV_TYPE_THRESH,
 						  IIO_EV_DIR_RISING),
 			       timestamp);
 
 	if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_Y_LOW)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_Y,
+						  IIO_MOD_Y,
 						  IIO_EV_TYPE_THRESH,
 						  IIO_EV_DIR_FALLING),
 			       timestamp);
 
 	if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_X_HIGH)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_X,
+						  IIO_MOD_X,
 						  IIO_EV_TYPE_THRESH,
 						  IIO_EV_DIR_RISING),
 			       timestamp);
 
 	if (t & LIS3L02DQ_REG_WAKE_UP_SRC_INTERRUPT_X_LOW)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_X,
+						  IIO_MOD_X,
 						  IIO_EV_TYPE_THRESH,
 						  IIO_EV_DIR_FALLING),
 			       timestamp);
diff --git a/drivers/staging/iio/accel/lis3l02dq_ring.c b/drivers/staging/iio/accel/lis3l02dq_ring.c
index 8d5c8ac7db51..5c6fe13408b1 100644
--- a/drivers/staging/iio/accel/lis3l02dq_ring.c
+++ b/drivers/staging/iio/accel/lis3l02dq_ring.c
@@ -1,19 +1,15 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
 #include <linux/gpio.h>
 #include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
-#include <linux/sysfs.h>
 #include <linux/slab.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
 #include "../kfifo_buf.h"
-#include "accel.h"
 #include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "lis3l02dq.h"
 
 /**
@@ -165,7 +161,7 @@ static int lis3l02dq_get_ring_element(struct iio_dev *indio_dev,
 static irqreturn_t lis3l02dq_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	int len = 0;
 	size_t datasize = ring->access->get_bytes_per_datum(ring);
@@ -306,6 +302,12 @@ static int lis3l02dq_trig_try_reen(struct iio_trigger *trig)
 	return 0;
 }
 
+static const struct iio_trigger_ops lis3l02dq_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &lis3l02dq_data_rdy_trigger_set_state,
+	.try_reenable = &lis3l02dq_trig_try_reen,
+};
+
 int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -318,10 +320,8 @@ int lis3l02dq_probe_trigger(struct iio_dev *indio_dev)
 	}
 
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &lis3l02dq_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &lis3l02dq_data_rdy_trigger_set_state;
-	st->trig->try_reenable = &lis3l02dq_trig_try_reen;
 	ret = iio_trigger_register(st->trig);
 	if (ret)
 		goto error_free_trig;
diff --git a/drivers/staging/iio/accel/sca3000_core.c b/drivers/staging/iio/accel/sca3000_core.c
index 603f5bca797c..dbf1622e19f2 100644
--- a/drivers/staging/iio/accel/sca3000_core.c
+++ b/drivers/staging/iio/accel/sca3000_core.c
@@ -18,11 +18,11 @@
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
 
-#include "accel.h"
 #include "sca3000.h"
 
 enum sca3000_variant {
@@ -422,7 +422,7 @@ static IIO_DEVICE_ATTR(measurement_mode, S_IRUGO | S_IWUSR,
 
 /* More standard attributes */
 
-static IIO_DEV_ATTR_REV(sca3000_show_rev);
+static IIO_DEVICE_ATTR(revision, S_IRUGO, sca3000_show_rev, NULL, 0);
 
 #define SCA3000_INFO_MASK			\
 	(1 << IIO_CHAN_INFO_SCALE_SHARED)
@@ -816,36 +816,36 @@ static irqreturn_t sca3000_event_handler(int irq, void *private)
 
 	if (val & SCA3000_INT_STATUS_FREE_FALL)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_X_AND_Y_AND_Z,
+						  IIO_MOD_X_AND_Y_AND_Z,
 						  IIO_EV_TYPE_MAG,
 						  IIO_EV_DIR_FALLING),
 			       last_timestamp);
 
 	if (val & SCA3000_INT_STATUS_Y_TRIGGER)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_Y,
+						  IIO_MOD_Y,
 						  IIO_EV_TYPE_MAG,
 						  IIO_EV_DIR_RISING),
 			       last_timestamp);
 
 	if (val & SCA3000_INT_STATUS_X_TRIGGER)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_X,
+						  IIO_MOD_X,
 						  IIO_EV_TYPE_MAG,
 						  IIO_EV_DIR_RISING),
 			       last_timestamp);
 
 	if (val & SCA3000_INT_STATUS_Z_TRIGGER)
 		iio_push_event(indio_dev, 0,
-			       IIO_MOD_EVENT_CODE(IIO_EV_CLASS_ACCEL,
+			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
 						  0,
-						  IIO_EV_MOD_Z,
+						  IIO_MOD_Z,
 						  IIO_EV_TYPE_MAG,
 						  IIO_EV_DIR_RISING),
 			       last_timestamp);
diff --git a/drivers/staging/iio/accel/sca3000_ring.c b/drivers/staging/iio/accel/sca3000_ring.c
index a704c75fffc2..0b736dbe818c 100644
--- a/drivers/staging/iio/accel/sca3000_ring.c
+++ b/drivers/staging/iio/accel/sca3000_ring.c
@@ -10,9 +10,7 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/gpio.h>
 #include <linux/fs.h>
-#include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
@@ -24,7 +22,6 @@
 #include "../sysfs.h"
 #include "../ring_generic.h"
 #include "../ring_hw.h"
-#include "accel.h"
 #include "sca3000.h"
 
 /* RFC / future work
@@ -226,74 +223,6 @@ static IIO_DEVICE_ATTR(75_percent, S_IRUGO | S_IWUSR,
 		       sca3000_set_ring_int,
 		       SCA3000_INT_MASK_RING_THREE_QUARTER);
 
-
-/**
- * sca3000_show_ring_bpse() -sysfs function to query bits per sample from ring
- * @dev: ring buffer device
- * @attr: this device attribute
- * @buf: buffer to write to
- **/
-static ssize_t sca3000_show_ring_bpse(struct device *dev,
-				      struct device_attribute *attr,
-				      char *buf)
-{
-	int len = 0, ret;
-	struct iio_ring_buffer *ring = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = ring->indio_dev;
-	struct sca3000_state *st = iio_priv(indio_dev);
-
-	mutex_lock(&st->lock);
-	ret = sca3000_read_data_short(st, SCA3000_REG_ADDR_MODE, 1);
-	if (ret)
-		goto error_ret;
-	if (st->rx[0] & SCA3000_RING_BUF_8BIT)
-		len = sprintf(buf, "s8/8\n");
-	else
-		len = sprintf(buf, "s11/16\n");
-error_ret:
-	mutex_unlock(&st->lock);
-
-	return ret ? ret : len;
-}
-
-/**
- * sca3000_store_ring_bpse() - bits per scan element
- * @dev: ring buffer device
- * @attr: attribute called from
- * @buf: input from userspace
- * @len: length of input
- **/
-static ssize_t sca3000_store_ring_bpse(struct device *dev,
-				      struct device_attribute *attr,
-				      const char *buf,
-				      size_t len)
-{
-	struct iio_ring_buffer *ring = dev_get_drvdata(dev);
-	struct iio_dev *indio_dev = ring->indio_dev;
-	struct sca3000_state *st = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&st->lock);
-
-	ret = sca3000_read_data_short(st, SCA3000_REG_ADDR_MODE, 1);
-	if (ret)
-		goto error_ret;
-	if (sysfs_streq(buf, "s8/8")) {
-		ret = sca3000_write_reg(st, SCA3000_REG_ADDR_MODE,
-					st->rx[0] | SCA3000_RING_BUF_8BIT);
-		st->bpse = 8;
-	} else if (sysfs_streq(buf, "s11/16")) {
-		ret = sca3000_write_reg(st, SCA3000_REG_ADDR_MODE,
-					st->rx[0] & ~SCA3000_RING_BUF_8BIT);
-		st->bpse = 11;
-	} else
-		ret = -EINVAL;
-error_ret:
-	mutex_unlock(&st->lock);
-
-	return ret ? ret : len;
-}
-
 static ssize_t sca3000_show_buffer_scale(struct device *dev,
 					 struct device_attribute *attr,
 					 char *buf)
diff --git a/drivers/staging/iio/adc/Kconfig b/drivers/staging/iio/adc/Kconfig
index b39f2e1c1fe6..25566c624671 100644
--- a/drivers/staging/iio/adc/Kconfig
+++ b/drivers/staging/iio/adc/Kconfig
@@ -161,6 +161,20 @@ config AD7816
 	  Say yes here to build support for Analog Devices AD7816/7/8
 	  temperature sensors and ADC.
 
+config AD7192
+	tristate "Analog Devices AD7190 AD7192 AD7195 ADC driver"
+	depends on SPI
+	select IIO_RING_BUFFER
+	select IIO_SW_RING
+	select IIO_TRIGGER
+	help
+	  Say yes here to build support for Analog Devices AD7190,
+	  AD7192 or AD7195 SPI analog to digital convertors (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 ADT75
 	tristate "Analog Devices ADT75 temperature sensor driver"
 	depends on I2C
@@ -182,6 +196,16 @@ config ADT7410
 	  Say yes here to build support for Analog Devices ADT7410
 	  temperature sensors.
 
+config AD7280
+	tristate "Analog Devices AD7280A Lithium Ion Battery Monitoring System"
+	depends on SPI
+	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 MAX1363
 	tristate "Maxim max1363 ADC driver"
 	depends on I2C
diff --git a/drivers/staging/iio/adc/Makefile b/drivers/staging/iio/adc/Makefile
index f02035139979..990d3fada305 100644
--- a/drivers/staging/iio/adc/Makefile
+++ b/drivers/staging/iio/adc/Makefile
@@ -37,6 +37,8 @@ obj-$(CONFIG_AD7745) += ad7745.o
 obj-$(CONFIG_AD7780) += ad7780.o
 obj-$(CONFIG_AD7793) += ad7793.o
 obj-$(CONFIG_AD7816) += ad7816.o
+obj-$(CONFIG_AD7192) += ad7192.o
 obj-$(CONFIG_ADT75) += adt75.o
 obj-$(CONFIG_ADT7310) += adt7310.o
 obj-$(CONFIG_ADT7410) += adt7410.o
+obj-$(CONFIG_AD7280) += ad7280a.o
diff --git a/drivers/staging/iio/adc/ad7150.c b/drivers/staging/iio/adc/ad7150.c
index 04017ef6688a..c01acbc7b34e 100644
--- a/drivers/staging/iio/adc/ad7150.c
+++ b/drivers/staging/iio/adc/ad7150.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/slab.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -617,6 +618,8 @@ static IIO_DEV_ATTR_POWERDOWN_TIMER(S_IRUGO | S_IWUSR,
 		ad7150_store_powerdown_timer);
 
 static struct attribute *ad7150_attributes[] = {
+	&iio_dev_attr_available_conversion_modes.dev_attr.attr,
+	&iio_dev_attr_conversion_mode.dev_attr.attr,
 	&iio_dev_attr_available_threshold_modes.dev_attr.attr,
 	&iio_dev_attr_threshold_mode.dev_attr.attr,
 	&iio_dev_attr_ch1_threshold.dev_attr.attr,
@@ -652,14 +655,14 @@ static irqreturn_t ad7150_event_handler(int irq, void *private)
 
 	if ((int_status & AD7150_STATUS_OUT1) && !(chip->old_state & AD7150_STATUS_OUT1))
 		iio_push_event(indio_dev, 0,
-			       IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_IN,
+			       IIO_UNMOD_EVENT_CODE(IIO_IN,
 						    0,
 						    IIO_EV_TYPE_THRESH,
 						    IIO_EV_DIR_RISING),
 				timestamp);
 	else if ((!(int_status & AD7150_STATUS_OUT1)) && (chip->old_state & AD7150_STATUS_OUT1))
 		iio_push_event(indio_dev, 0,
-			       IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_IN,
+			       IIO_UNMOD_EVENT_CODE(IIO_IN,
 						    0,
 						    IIO_EV_TYPE_THRESH,
 						    IIO_EV_DIR_FALLING),
@@ -667,14 +670,14 @@ static irqreturn_t ad7150_event_handler(int irq, void *private)
 
 	if ((int_status & AD7150_STATUS_OUT2) && !(chip->old_state & AD7150_STATUS_OUT2))
 		iio_push_event(indio_dev, 0,
-			       IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_IN,
+			       IIO_UNMOD_EVENT_CODE(IIO_IN,
 						    1,
 						    IIO_EV_TYPE_THRESH,
 						    IIO_EV_DIR_RISING),
 			       timestamp);
 	else if ((!(int_status & AD7150_STATUS_OUT2)) && (chip->old_state & AD7150_STATUS_OUT2))
 		iio_push_event(indio_dev, 0,
-			       IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_IN,
+			       IIO_UNMOD_EVENT_CODE(IIO_IN,
 						    1,
 						    IIO_EV_TYPE_THRESH,
 						    IIO_EV_DIR_FALLING),
diff --git a/drivers/staging/iio/adc/ad7152.c b/drivers/staging/iio/adc/ad7152.c
index 21f5f380fb5e..fcec9b620c6e 100644
--- a/drivers/staging/iio/adc/ad7152.c
+++ b/drivers/staging/iio/adc/ad7152.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/adc/ad7192.c b/drivers/staging/iio/adc/ad7192.c
new file mode 100644
index 000000000000..adf6d95dd34f
--- /dev/null
+++ b/drivers/staging/iio/adc/ad7192.c
@@ -0,0 +1,1184 @@
+/*
+ * AD7190 AD7192 AD7195 SPI ADC driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/interrupt.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 "../iio.h"
+#include "../sysfs.h"
+#include "../ring_generic.h"
+#include "../ring_sw.h"
+#include "../trigger.h"
+#include "../trigger_consumer.h"
+
+#include "ad7192.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		(1 << 7) /* Write Enable */
+#define AD7192_COMM_WRITE	(0 << 6) /* Write Operation */
+#define AD7192_COMM_READ	(1 << 6) /* Read Operation */
+#define AD7192_COMM_ADDR(x)	(((x) & 0x7) << 3) /* Register Address */
+#define AD7192_COMM_CREAD	(1 << 2) /* Continuous Read of Data Register */
+
+/* Status Register Bit Designations (AD7192_REG_STAT) */
+#define AD7192_STAT_RDY		(1 << 7) /* Ready */
+#define AD7192_STAT_ERR		(1 << 6) /* Error (Overrange, Underrange) */
+#define AD7192_STAT_NOREF	(1 << 5) /* Error no external reference */
+#define AD7192_STAT_PARITY	(1 << 4) /* Parity */
+#define AD7192_STAT_CH3		(1 << 2) /* Channel 3 */
+#define AD7192_STAT_CH2		(1 << 1) /* Channel 2 */
+#define AD7192_STAT_CH1		(1 << 0) /* Channel 1 */
+
+/* Mode Register Bit Designations (AD7192_REG_MODE) */
+#define AD7192_MODE_SEL(x)	(((x) & 0x7) << 21) /* Operation Mode Select */
+#define AD7192_MODE_DAT_STA	(1 << 20) /* Status Register transmission */
+#define AD7192_MODE_CLKSRC(x)	(((x) & 0x3) << 18) /* Clock Source Select */
+#define AD7192_MODE_SINC3	(1 << 15) /* SINC3 Filter Select */
+#define AD7192_MODE_ACX		(1 << 14) /* AC excitation enable(AD7195 only)*/
+#define AD7192_MODE_ENPAR	(1 << 13) /* Parity Enable */
+#define AD7192_MODE_CLKDIV	(1 << 12) /* Clock divide by 2 (AD7190/2 only)*/
+#define AD7192_MODE_SCYCLE	(1 << 11) /* Single cycle conversion */
+#define AD7192_MODE_REJ60	(1 << 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	(1 << 23) /* CHOP enable */
+#define AD7192_CONF_REFSEL	(1 << 20) /* REFIN1/REFIN2 Reference Select */
+#define AD7192_CONF_CHAN(x)	(((x) & 0xFF) << 8) /* Channel select */
+#define AD7192_CONF_BURN	(1 << 7) /* Burnout current enable */
+#define AD7192_CONF_REFDET	(1 << 6) /* Reference detect enable */
+#define AD7192_CONF_BUF		(1 << 4) /* Buffered Mode Enable */
+#define AD7192_CONF_UNIPOLAR	(1 << 3) /* Unipolar/Bipolar Enable */
+#define AD7192_CONF_GAIN(x)	((x) & 0x7) /* Gain Select */
+
+#define AD7192_CH_AIN1P_AIN2M	0 /* AIN1(+) - AIN2(-) */
+#define AD7192_CH_AIN3P_AIN4M	1 /* AIN3(+) - AIN4(-) */
+#define AD7192_CH_TEMP		2 /* Temp Sensor */
+#define AD7192_CH_AIN2P_AIN2M	3 /* AIN2(+) - AIN2(-) */
+#define AD7192_CH_AIN1		4 /* AIN1 - AINCOM */
+#define AD7192_CH_AIN2		5 /* AIN2 - AINCOM */
+#define AD7192_CH_AIN3		6 /* AIN3 - AINCOM */
+#define AD7192_CH_AIN4		7 /* AIN4 - AINCOM */
+
+/* ID Register Bit Designations (AD7192_REG_ID) */
+#define ID_AD7190		0x4
+#define ID_AD7192		0x0
+#define ID_AD7195		0x6
+#define AD7192_ID_MASK		0x0F
+
+/* GPOCON Register Bit Designations (AD7192_REG_GPOCON) */
+#define AD7192_GPOCON_BPDSW	(1 << 6) /* Bridge power-down switch enable */
+#define AD7192_GPOCON_GP32EN	(1 << 5) /* Digital Output P3 and P2 enable */
+#define AD7192_GPOCON_GP10EN	(1 << 4) /* Digital Output P1 and P0 enable */
+#define AD7192_GPOCON_P3DAT	(1 << 3) /* P3 state */
+#define AD7192_GPOCON_P2DAT	(1 << 2) /* P2 state */
+#define AD7192_GPOCON_P1DAT	(1 << 1) /* P1 state */
+#define AD7192_GPOCON_P0DAT	(1 << 0) /* P0 state */
+
+#define AD7192_INT_FREQ_MHz	4915200
+
+/* 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.
+ */
+
+struct ad7192_state {
+	struct spi_device		*spi;
+	struct iio_trigger		*trig;
+	struct regulator		*reg;
+	struct ad7192_platform_data	*pdata;
+	wait_queue_head_t		wq_data_avail;
+	bool				done;
+	bool				irq_dis;
+	u16				int_vref_mv;
+	u32				mclk;
+	u32				f_order;
+	u32				mode;
+	u32				conf;
+	u32				scale_avail[8][2];
+	u32				available_scan_masks[9];
+	u8				gpocon;
+	u8				devid;
+	/*
+	 * DMA (thus cache coherency maintenance) requires the
+	 * transfer buffers to live in their own cache lines.
+	 */
+	u8				data[4] ____cacheline_aligned;
+};
+
+static int __ad7192_write_reg(struct ad7192_state *st, bool locked,
+			      bool cs_change, unsigned char reg,
+			      unsigned size, unsigned val)
+{
+	u8 *data = st->data;
+	struct spi_transfer t = {
+		.tx_buf		= data,
+		.len		= size + 1,
+		.cs_change	= cs_change,
+	};
+	struct spi_message m;
+
+	data[0] = AD7192_COMM_WRITE | AD7192_COMM_ADDR(reg);
+
+	switch (size) {
+	case 3:
+		data[1] = val >> 16;
+		data[2] = val >> 8;
+		data[3] = val;
+		break;
+	case 2:
+		data[1] = val >> 8;
+		data[2] = val;
+		break;
+	case 1:
+		data[1] = val;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	spi_message_init(&m);
+	spi_message_add_tail(&t, &m);
+
+	if (locked)
+		return spi_sync_locked(st->spi, &m);
+	else
+		return spi_sync(st->spi, &m);
+}
+
+static int ad7192_write_reg(struct ad7192_state *st,
+			    unsigned reg, unsigned size, unsigned val)
+{
+	return __ad7192_write_reg(st, false, false, reg, size, val);
+}
+
+static int __ad7192_read_reg(struct ad7192_state *st, bool locked,
+			     bool cs_change, unsigned char reg,
+			     int *val, unsigned size)
+{
+	u8 *data = st->data;
+	int ret;
+	struct spi_transfer t[] = {
+		{
+			.tx_buf = data,
+			.len = 1,
+		}, {
+			.rx_buf = data,
+			.len = size,
+			.cs_change = cs_change,
+		},
+	};
+	struct spi_message m;
+
+	data[0] = AD7192_COMM_READ | AD7192_COMM_ADDR(reg);
+
+	spi_message_init(&m);
+	spi_message_add_tail(&t[0], &m);
+	spi_message_add_tail(&t[1], &m);
+
+	if (locked)
+		ret = spi_sync_locked(st->spi, &m);
+	else
+		ret = spi_sync(st->spi, &m);
+
+	if (ret < 0)
+		return ret;
+
+	switch (size) {
+	case 3:
+		*val = data[0] << 16 | data[1] << 8 | data[2];
+		break;
+	case 2:
+		*val = data[0] << 8 | data[1];
+		break;
+	case 1:
+		*val = data[0];
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return 0;
+}
+
+static int ad7192_read_reg(struct ad7192_state *st,
+			   unsigned reg, int *val, unsigned size)
+{
+	return __ad7192_read_reg(st, 0, 0, reg, val, size);
+}
+
+static int ad7192_read(struct ad7192_state *st, unsigned ch,
+		       unsigned len, int *val)
+{
+	int ret;
+	st->conf = (st->conf & ~AD7192_CONF_CHAN(-1)) |
+		AD7192_CONF_CHAN(1 << ch);
+	st->mode = (st->mode & ~AD7192_MODE_SEL(-1)) |
+		AD7192_MODE_SEL(AD7192_MODE_SINGLE);
+
+	ad7192_write_reg(st, AD7192_REG_CONF, 3, st->conf);
+
+	spi_bus_lock(st->spi->master);
+	st->done = false;
+
+	ret = __ad7192_write_reg(st, 1, 1, AD7192_REG_MODE, 3, st->mode);
+	if (ret < 0)
+		goto out;
+
+	st->irq_dis = false;
+	enable_irq(st->spi->irq);
+	wait_event_interruptible(st->wq_data_avail, st->done);
+
+	ret = __ad7192_read_reg(st, 1, 0, AD7192_REG_DATA, val, len);
+out:
+	spi_bus_unlock(st->spi->master);
+
+	return ret;
+}
+
+static int ad7192_calibrate(struct ad7192_state *st, unsigned mode, unsigned ch)
+{
+	int ret;
+
+	st->conf = (st->conf & ~AD7192_CONF_CHAN(-1)) |
+		AD7192_CONF_CHAN(1 << ch);
+	st->mode = (st->mode & ~AD7192_MODE_SEL(-1)) | AD7192_MODE_SEL(mode);
+
+	ad7192_write_reg(st, AD7192_REG_CONF, 3, st->conf);
+
+	spi_bus_lock(st->spi->master);
+	st->done = false;
+
+	ret = __ad7192_write_reg(st, 1, 1, AD7192_REG_MODE, 3,
+				 (st->devid != ID_AD7195) ?
+				 st->mode | AD7192_MODE_CLKDIV :
+				 st->mode);
+	if (ret < 0)
+		goto out;
+
+	st->irq_dis = false;
+	enable_irq(st->spi->irq);
+	wait_event_interruptible(st->wq_data_avail, st->done);
+
+	st->mode = (st->mode & ~AD7192_MODE_SEL(-1)) |
+		AD7192_MODE_SEL(AD7192_MODE_IDLE);
+
+	ret = __ad7192_write_reg(st, 1, 0, AD7192_REG_MODE, 3, st->mode);
+out:
+	spi_bus_unlock(st->spi->master);
+
+	return ret;
+}
+
+static const u8 ad7192_calib_arr[8][2] = {
+	{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)
+{
+	int i, ret;
+
+	for (i = 0; i < ARRAY_SIZE(ad7192_calib_arr); i++) {
+		ret = ad7192_calibrate(st, ad7192_calib_arr[i][0],
+				       ad7192_calib_arr[i][1]);
+		if (ret)
+			goto out;
+	}
+
+	return 0;
+out:
+	dev_err(&st->spi->dev, "Calibration failed\n");
+	return ret;
+}
+
+static int ad7192_setup(struct ad7192_state *st)
+{
+	struct iio_dev *indio_dev = spi_get_drvdata(st->spi);
+	struct ad7192_platform_data *pdata = st->pdata;
+	unsigned long long scale_uv;
+	int i, ret, id;
+	u8 ones[6];
+
+	/* reset the serial interface */
+	memset(&ones, 0xFF, 6);
+	ret = spi_write(st->spi, &ones, 6);
+	if (ret < 0)
+		goto out;
+	msleep(1); /* Wait for at least 500us */
+
+	/* write/read test for device presence */
+	ret = ad7192_read_reg(st, AD7192_REG_ID, &id, 1);
+	if (ret)
+		goto out;
+
+	id &= AD7192_ID_MASK;
+
+	if (id != st->devid)
+		dev_warn(&st->spi->dev, "device ID query failed (0x%X)\n", id);
+
+	switch (pdata->clock_source_sel) {
+	case AD7192_CLK_EXT_MCLK1_2:
+	case AD7192_CLK_EXT_MCLK2:
+		st->mclk = AD7192_INT_FREQ_MHz;
+		break;
+	case AD7192_CLK_INT:
+	case AD7192_CLK_INT_CO:
+		if (pdata->ext_clk_Hz)
+			st->mclk = pdata->ext_clk_Hz;
+		else
+			st->mclk = AD7192_INT_FREQ_MHz;
+			break;
+	default:
+		ret = -EINVAL;
+		goto out;
+	}
+
+	st->mode = AD7192_MODE_SEL(AD7192_MODE_IDLE) |
+		AD7192_MODE_CLKSRC(pdata->clock_source_sel) |
+		AD7192_MODE_RATE(480);
+
+	st->conf = AD7192_CONF_GAIN(0);
+
+	if (pdata->rej60_en)
+		st->mode |= AD7192_MODE_REJ60;
+
+	if (pdata->sinc3_en)
+		st->mode |= AD7192_MODE_SINC3;
+
+	if (pdata->refin2_en && (st->devid != ID_AD7195))
+		st->conf |= AD7192_CONF_REFSEL;
+
+	if (pdata->chop_en) {
+		st->conf |= AD7192_CONF_CHOP;
+		if (pdata->sinc3_en)
+			st->f_order = 3; /* SINC 3rd order */
+		else
+			st->f_order = 4; /* SINC 4th order */
+	} else {
+		st->f_order = 1;
+	}
+
+	if (pdata->buf_en)
+		st->conf |= AD7192_CONF_BUF;
+
+	if (pdata->unipolar_en)
+		st->conf |= AD7192_CONF_UNIPOLAR;
+
+	if (pdata->burnout_curr_en)
+		st->conf |= AD7192_CONF_BURN;
+
+	ret = ad7192_write_reg(st, AD7192_REG_MODE, 3, st->mode);
+	if (ret)
+		goto out;
+
+	ret = ad7192_write_reg(st, AD7192_REG_CONF, 3, st->conf);
+	if (ret)
+		goto out;
+
+	ret = ad7192_calibrate_all(st);
+	if (ret)
+		goto out;
+
+	/* 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;
+out:
+	dev_err(&st->spi->dev, "setup failed\n");
+	return ret;
+}
+
+static int ad7192_scan_from_ring(struct ad7192_state *st, unsigned ch, int *val)
+{
+	struct iio_ring_buffer *ring = iio_priv_to_dev(st)->ring;
+	int ret;
+	s64 dat64[2];
+	u32 *dat32 = (u32 *)dat64;
+
+	if (!(ring->scan_mask & (1 << ch)))
+		return  -EBUSY;
+
+	ret = ring->access->read_last(ring, (u8 *) &dat64);
+	if (ret)
+		return ret;
+
+	*val = *dat32;
+
+	return 0;
+}
+
+static int ad7192_ring_preenable(struct iio_dev *indio_dev)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	struct iio_ring_buffer *ring = indio_dev->ring;
+	size_t d_size;
+	unsigned channel;
+
+	if (!ring->scan_count)
+		return -EINVAL;
+
+	channel = __ffs(ring->scan_mask);
+
+	d_size = ring->scan_count *
+		 indio_dev->channels[0].scan_type.storagebits / 8;
+
+	if (ring->scan_timestamp) {
+		d_size += sizeof(s64);
+
+		if (d_size % sizeof(s64))
+			d_size += sizeof(s64) - (d_size % sizeof(s64));
+	}
+
+	if (indio_dev->ring->access->set_bytes_per_datum)
+		indio_dev->ring->access->set_bytes_per_datum(indio_dev->ring,
+							     d_size);
+
+	st->mode  = (st->mode & ~AD7192_MODE_SEL(-1)) |
+		    AD7192_MODE_SEL(AD7192_MODE_CONT);
+	st->conf  = (st->conf & ~AD7192_CONF_CHAN(-1)) |
+		    AD7192_CONF_CHAN(1 << indio_dev->channels[channel].address);
+
+	ad7192_write_reg(st, AD7192_REG_CONF, 3, st->conf);
+
+	spi_bus_lock(st->spi->master);
+	__ad7192_write_reg(st, 1, 1, AD7192_REG_MODE, 3, st->mode);
+
+	st->irq_dis = false;
+	enable_irq(st->spi->irq);
+
+	return 0;
+}
+
+static int ad7192_ring_postdisable(struct iio_dev *indio_dev)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	st->mode  = (st->mode & ~AD7192_MODE_SEL(-1)) |
+		    AD7192_MODE_SEL(AD7192_MODE_IDLE);
+
+	st->done = false;
+	wait_event_interruptible(st->wq_data_avail, st->done);
+
+	if (!st->irq_dis)
+		disable_irq_nosync(st->spi->irq);
+
+	__ad7192_write_reg(st, 1, 0, AD7192_REG_MODE, 3, st->mode);
+
+	return spi_bus_unlock(st->spi->master);
+}
+
+/**
+ * ad7192_trigger_handler() bh of trigger launched polling to ring buffer
+ **/
+static irqreturn_t ad7192_trigger_handler(int irq, void *p)
+{
+	struct iio_poll_func *pf = p;
+	struct iio_dev *indio_dev = pf->indio_dev;
+	struct iio_ring_buffer *ring = indio_dev->ring;
+	struct ad7192_state *st = iio_priv(indio_dev);
+	s64 dat64[2];
+	s32 *dat32 = (s32 *)dat64;
+
+	if (ring->scan_count)
+		__ad7192_read_reg(st, 1, 1, AD7192_REG_DATA,
+				  dat32,
+				  indio_dev->channels[0].scan_type.realbits/8);
+
+	/* Guaranteed to be aligned with 8 byte boundary */
+	if (ring->scan_timestamp)
+		dat64[1] = pf->timestamp;
+
+	ring->access->store_to(ring, (u8 *)dat64, pf->timestamp);
+
+	iio_trigger_notify_done(indio_dev->trig);
+	st->irq_dis = false;
+	enable_irq(st->spi->irq);
+
+	return IRQ_HANDLED;
+}
+
+static const struct iio_ring_setup_ops ad7192_ring_setup_ops = {
+	.preenable = &ad7192_ring_preenable,
+	.postenable = &iio_triggered_ring_postenable,
+	.predisable = &iio_triggered_ring_predisable,
+	.postdisable = &ad7192_ring_postdisable,
+};
+
+static int ad7192_register_ring_funcs_and_init(struct iio_dev *indio_dev)
+{
+	int ret;
+
+	indio_dev->ring = iio_sw_rb_allocate(indio_dev);
+	if (!indio_dev->ring) {
+		ret = -ENOMEM;
+		goto error_ret;
+	}
+	/* Effectively select the ring buffer implementation */
+	indio_dev->ring->access = &ring_sw_access_funcs;
+	indio_dev->pollfunc = iio_alloc_pollfunc(&iio_pollfunc_store_time,
+						 &ad7192_trigger_handler,
+						 IRQF_ONESHOT,
+						 indio_dev,
+						 "ad7192_consumer%d",
+						 indio_dev->id);
+	if (indio_dev->pollfunc == NULL) {
+		ret = -ENOMEM;
+		goto error_deallocate_sw_rb;
+	}
+
+	/* Ring buffer functions - here trigger setup related */
+	indio_dev->ring->setup_ops = &ad7192_ring_setup_ops;
+
+	/* Flag that polled ring buffering is possible */
+	indio_dev->modes |= INDIO_RING_TRIGGERED;
+	return 0;
+
+error_deallocate_sw_rb:
+	iio_sw_rb_free(indio_dev->ring);
+error_ret:
+	return ret;
+}
+
+static void ad7192_ring_cleanup(struct iio_dev *indio_dev)
+{
+	iio_dealloc_pollfunc(indio_dev->pollfunc);
+	iio_sw_rb_free(indio_dev->ring);
+}
+
+/**
+ * ad7192_data_rdy_trig_poll() the event handler for the data rdy trig
+ **/
+static irqreturn_t ad7192_data_rdy_trig_poll(int irq, void *private)
+{
+	struct ad7192_state *st = iio_priv(private);
+
+	st->done = true;
+	wake_up_interruptible(&st->wq_data_avail);
+	disable_irq_nosync(irq);
+	st->irq_dis = true;
+	iio_trigger_poll(st->trig, iio_get_time_ns());
+
+	return IRQ_HANDLED;
+}
+
+static int ad7192_probe_trigger(struct iio_dev *indio_dev)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+	int ret;
+
+	st->trig = iio_allocate_trigger("%s-dev%d",
+					spi_get_device_id(st->spi)->name,
+					indio_dev->id);
+	if (st->trig == NULL) {
+		ret = -ENOMEM;
+		goto error_ret;
+	}
+
+	ret = request_irq(st->spi->irq,
+			  ad7192_data_rdy_trig_poll,
+			  IRQF_TRIGGER_LOW,
+			  spi_get_device_id(st->spi)->name,
+			  indio_dev);
+	if (ret)
+		goto error_free_trig;
+
+	disable_irq_nosync(st->spi->irq);
+	st->irq_dis = true;
+	st->trig->dev.parent = &st->spi->dev;
+	st->trig->owner = THIS_MODULE;
+	st->trig->private_data = indio_dev;
+
+	ret = iio_trigger_register(st->trig);
+
+	/* select default trigger */
+	indio_dev->trig = st->trig;
+	if (ret)
+		goto error_free_irq;
+
+	return 0;
+
+error_free_irq:
+	free_irq(st->spi->irq, indio_dev);
+error_free_trig:
+	iio_free_trigger(st->trig);
+error_ret:
+	return ret;
+}
+
+static void ad7192_remove_trigger(struct iio_dev *indio_dev)
+{
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	iio_trigger_unregister(st->trig);
+	free_irq(st->spi->irq, indio_dev);
+	iio_free_trigger(st->trig);
+}
+
+static ssize_t ad7192_read_frequency(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	return sprintf(buf, "%d\n", st->mclk /
+			(st->f_order * 1024 * AD7192_MODE_RATE(st->mode)));
+}
+
+static ssize_t ad7192_write_frequency(struct device *dev,
+		struct device_attribute *attr,
+		const char *buf,
+		size_t len)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+	unsigned long lval;
+	int div, ret;
+
+	ret = strict_strtoul(buf, 10, &lval);
+	if (ret)
+		return ret;
+
+	mutex_lock(&indio_dev->mlock);
+	if (iio_ring_enabled(indio_dev)) {
+		mutex_unlock(&indio_dev->mlock);
+		return -EBUSY;
+	}
+
+	div = st->mclk / (lval * st->f_order * 1024);
+	if (div < 1 || div > 1023) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	st->mode &= ~AD7192_MODE_RATE(-1);
+	st->mode |= AD7192_MODE_RATE(div);
+	ad7192_write_reg(st, AD7192_REG_MODE, 3, st->mode);
+
+out:
+	mutex_unlock(&indio_dev->mlock);
+
+	return ret ? ret : len;
+}
+
+static IIO_DEV_ATTR_SAMP_FREQ(S_IWUSR | S_IRUGO,
+		ad7192_read_frequency,
+		ad7192_write_frequency);
+
+
+static ssize_t ad7192_show_scale_available(struct device *dev,
+			struct device_attribute *attr, char *buf)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ad7192_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");
+
+	return len;
+}
+
+static IIO_DEVICE_ATTR_NAMED(in_m_in_scale_available, in-in_scale_available,
+			     S_IRUGO, ad7192_show_scale_available, NULL, 0);
+
+static IIO_DEVICE_ATTR(in_scale_available, S_IRUGO,
+		       ad7192_show_scale_available, NULL, 0);
+
+static ssize_t ad7192_show_ac_excitation(struct device *dev,
+		struct device_attribute *attr,
+		char *buf)
+{
+	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	return sprintf(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_get_drvdata(dev);
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	return sprintf(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_get_drvdata(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 = strtobool(buf, &val);
+	if (ret < 0)
+		return ret;
+
+	mutex_lock(&indio_dev->mlock);
+	if (iio_ring_enabled(indio_dev)) {
+		mutex_unlock(&indio_dev->mlock);
+		return -EBUSY;
+	}
+
+	switch (this_attr->address) {
+	case AD7192_REG_GPOCON:
+		if (val)
+			st->gpocon |= AD7192_GPOCON_BPDSW;
+		else
+			st->gpocon &= ~AD7192_GPOCON_BPDSW;
+
+		ad7192_write_reg(st, AD7192_REG_GPOCON, 1, st->gpocon);
+		break;
+	case AD7192_REG_MODE:
+		if (val)
+			st->mode |= AD7192_MODE_ACX;
+		else
+			st->mode &= ~AD7192_MODE_ACX;
+
+		ad7192_write_reg(st, AD7192_REG_GPOCON, 3, st->mode);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	mutex_unlock(&indio_dev->mlock);
+
+	return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(bridge_switch_en, S_IRUGO | S_IWUSR,
+		       ad7192_show_bridge_switch, ad7192_set,
+		       AD7192_REG_GPOCON);
+
+static IIO_DEVICE_ATTR(ac_excitation_en, S_IRUGO | S_IWUSR,
+		       ad7192_show_ac_excitation, ad7192_set,
+		       AD7192_REG_MODE);
+
+static struct attribute *ad7192_attributes[] = {
+	&iio_dev_attr_sampling_frequency.dev_attr.attr,
+	&iio_dev_attr_in_m_in_scale_available.dev_attr.attr,
+	&iio_dev_attr_in_scale_available.dev_attr.attr,
+	&iio_dev_attr_bridge_switch_en.dev_attr.attr,
+	&iio_dev_attr_ac_excitation_en.dev_attr.attr,
+	NULL
+};
+
+static mode_t ad7192_attr_is_visible(struct kobject *kobj,
+				     struct attribute *attr, int n)
+{
+	struct device *dev = container_of(kobj, struct device, kobj);
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7192_state *st = iio_priv(dev_info);
+
+	mode_t mode = attr->mode;
+
+	if ((st->devid != ID_AD7195) &&
+		(attr == &iio_dev_attr_ac_excitation_en.dev_attr.attr))
+		mode = 0;
+
+	return mode;
+}
+
+static const struct attribute_group ad7192_attribute_group = {
+	.attrs = ad7192_attributes,
+	.is_visible = ad7192_attr_is_visible,
+};
+
+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);
+	int ret, smpl = 0;
+	bool unipolar = !!(st->conf & AD7192_CONF_UNIPOLAR);
+
+	switch (m) {
+	case 0:
+		mutex_lock(&indio_dev->mlock);
+		if (iio_ring_enabled(indio_dev))
+			ret = ad7192_scan_from_ring(st,
+					chan->scan_index, &smpl);
+		else
+			ret = ad7192_read(st, chan->address,
+					chan->scan_type.realbits / 8, &smpl);
+		mutex_unlock(&indio_dev->mlock);
+
+		if (ret < 0)
+			return ret;
+
+		*val = (smpl >> chan->scan_type.shift) &
+			((1 << (chan->scan_type.realbits)) - 1);
+
+		switch (chan->type) {
+		case IIO_IN:
+		case IIO_IN_DIFF:
+			if (!unipolar)
+				*val -= (1 << (chan->scan_type.realbits - 1));
+			break;
+		case IIO_TEMP:
+			*val -= 0x800000;
+			*val /= 2815; /* temp Kelvin */
+			*val -= 273; /* temp Celsius */
+			break;
+		default:
+			return -EINVAL;
+		}
+		return IIO_VAL_INT;
+
+	case (1 << IIO_CHAN_INFO_SCALE_SHARED):
+		mutex_lock(&indio_dev->mlock);
+		*val = st->scale_avail[AD7192_CONF_GAIN(st->conf)][0];
+		*val2 = st->scale_avail[AD7192_CONF_GAIN(st->conf)][1];
+		mutex_unlock(&indio_dev->mlock);
+
+		return IIO_VAL_INT_PLUS_NANO;
+
+	case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
+		*val =  1000;
+
+		return IIO_VAL_INT;
+	}
+
+	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;
+	unsigned int tmp;
+
+	mutex_lock(&indio_dev->mlock);
+	if (iio_ring_enabled(indio_dev)) {
+		mutex_unlock(&indio_dev->mlock);
+		return -EBUSY;
+	}
+
+	switch (mask) {
+	case (1 << IIO_CHAN_INFO_SCALE_SHARED):
+		ret = -EINVAL;
+		for (i = 0; i < ARRAY_SIZE(st->scale_avail); i++)
+			if (val2 == st->scale_avail[i][1]) {
+				tmp = st->conf;
+				st->conf &= ~AD7192_CONF_GAIN(-1);
+				st->conf |= AD7192_CONF_GAIN(i);
+
+				if (tmp != st->conf) {
+					ad7192_write_reg(st, AD7192_REG_CONF,
+							 3, st->conf);
+					ad7192_calibrate_all(st);
+				}
+				ret = 0;
+			}
+
+	default:
+		ret = -EINVAL;
+	}
+
+	mutex_unlock(&indio_dev->mlock);
+
+	return ret;
+}
+
+static int ad7192_validate_trigger(struct iio_dev *indio_dev,
+				   struct iio_trigger *trig)
+{
+	if (indio_dev->trig != trig)
+		return -EINVAL;
+
+	return 0;
+}
+
+static int ad7192_write_raw_get_fmt(struct iio_dev *indio_dev,
+			       struct iio_chan_spec const *chan,
+			       long mask)
+{
+	return IIO_VAL_INT_PLUS_NANO;
+}
+
+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,
+	.attrs = &ad7192_attribute_group,
+	.validate_trigger = ad7192_validate_trigger,
+	.driver_module = THIS_MODULE,
+};
+
+#define AD7192_CHAN_DIFF(_chan, _chan2, _name, _address, _si)		\
+	{ .type = IIO_IN_DIFF,						\
+	  .indexed = 1,							\
+	  .extend_name = _name,						\
+	  .channel = _chan,						\
+	  .channel2 = _chan2,						\
+	  .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),		\
+	  .address = _address,						\
+	  .scan_index = _si,						\
+	  .scan_type =  IIO_ST('s', 24, 32, 0)}
+
+#define AD7192_CHAN(_chan, _address, _si)				\
+	{ .type = IIO_IN,						\
+	  .indexed = 1,							\
+	  .channel = _chan,						\
+	  .info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),		\
+	  .address = _address,						\
+	  .scan_index = _si,						\
+	  .scan_type =  IIO_ST('s', 24, 32, 0)}
+
+#define AD7192_CHAN_TEMP(_chan, _address, _si)				\
+	{ .type = IIO_TEMP,						\
+	  .indexed = 1,							\
+	  .channel = _chan,						\
+	  .info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),		\
+	  .address = _address,						\
+	  .scan_index = _si,						\
+	  .scan_type =  IIO_ST('s', 24, 32, 0)}
+
+static struct iio_chan_spec ad7192_channels[] = {
+	AD7192_CHAN_DIFF(1, 2, NULL, AD7192_CH_AIN1P_AIN2M, 0),
+	AD7192_CHAN_DIFF(3, 4, NULL, AD7192_CH_AIN3P_AIN4M, 1),
+	AD7192_CHAN_TEMP(0, AD7192_CH_TEMP, 2),
+	AD7192_CHAN_DIFF(2, 2, "shorted", AD7192_CH_AIN2P_AIN2M, 3),
+	AD7192_CHAN(1, AD7192_CH_AIN1, 4),
+	AD7192_CHAN(2, AD7192_CH_AIN2, 5),
+	AD7192_CHAN(3, AD7192_CH_AIN3, 6),
+	AD7192_CHAN(4, AD7192_CH_AIN4, 7),
+	IIO_CHAN_SOFT_TIMESTAMP(8),
+};
+
+static int __devinit ad7192_probe(struct spi_device *spi)
+{
+	struct ad7192_platform_data *pdata = spi->dev.platform_data;
+	struct ad7192_state *st;
+	struct iio_dev *indio_dev;
+	int ret, i , voltage_uv = 0, regdone = 0;
+
+	if (!pdata) {
+		dev_err(&spi->dev, "no platform data?\n");
+		return -ENODEV;
+	}
+
+	if (!spi->irq) {
+		dev_err(&spi->dev, "no IRQ?\n");
+		return -ENODEV;
+	}
+
+	indio_dev = iio_allocate_device(sizeof(*st));
+	if (indio_dev == NULL)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+
+	st->reg = regulator_get(&spi->dev, "vcc");
+	if (!IS_ERR(st->reg)) {
+		ret = regulator_enable(st->reg);
+		if (ret)
+			goto error_put_reg;
+
+		voltage_uv = regulator_get_voltage(st->reg);
+	}
+
+	st->pdata = pdata;
+
+	if (pdata && pdata->vref_mv)
+		st->int_vref_mv = pdata->vref_mv;
+	else if (voltage_uv)
+		st->int_vref_mv = voltage_uv / 1000;
+	else
+		dev_warn(&spi->dev, "reference voltage undefined\n");
+
+	spi_set_drvdata(spi, indio_dev);
+	st->spi = spi;
+	st->devid = spi_get_device_id(spi)->driver_data;
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = ad7192_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ad7192_channels);
+	indio_dev->available_scan_masks = st->available_scan_masks;
+	indio_dev->info = &ad7192_info;
+
+	for (i = 0; i < indio_dev->num_channels; i++)
+		st->available_scan_masks[i] = (1 << i) | (1 <<
+			indio_dev->channels[indio_dev->num_channels - 1].
+			scan_index);
+
+	init_waitqueue_head(&st->wq_data_avail);
+
+	ret = ad7192_register_ring_funcs_and_init(indio_dev);
+	if (ret)
+		goto error_disable_reg;
+
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto error_unreg_ring;
+	regdone = 1;
+
+	ret = ad7192_probe_trigger(indio_dev);
+	if (ret)
+		goto error_unreg_ring;
+
+	ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+					  indio_dev->channels,
+					  indio_dev->num_channels);
+	if (ret)
+		goto error_remove_trigger;
+
+	ret = ad7192_setup(st);
+	if (ret)
+		goto error_uninitialize_ring;
+
+	return 0;
+
+error_uninitialize_ring:
+	iio_ring_buffer_unregister(indio_dev->ring);
+error_remove_trigger:
+	ad7192_remove_trigger(indio_dev);
+error_unreg_ring:
+	ad7192_ring_cleanup(indio_dev);
+error_disable_reg:
+	if (!IS_ERR(st->reg))
+		regulator_disable(st->reg);
+error_put_reg:
+	if (!IS_ERR(st->reg))
+		regulator_put(st->reg);
+
+	if (regdone)
+		iio_device_unregister(indio_dev);
+	else
+		iio_free_device(indio_dev);
+
+	return ret;
+}
+
+static int ad7192_remove(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev = spi_get_drvdata(spi);
+	struct ad7192_state *st = iio_priv(indio_dev);
+
+	iio_ring_buffer_unregister(indio_dev->ring);
+	ad7192_remove_trigger(indio_dev);
+	ad7192_ring_cleanup(indio_dev);
+
+	if (!IS_ERR(st->reg)) {
+		regulator_disable(st->reg);
+		regulator_put(st->reg);
+	}
+
+	iio_device_unregister(indio_dev);
+
+	return 0;
+}
+
+static const struct spi_device_id ad7192_id[] = {
+	{"ad7190", ID_AD7190},
+	{"ad7192", ID_AD7192},
+	{"ad7195", ID_AD7195},
+	{}
+};
+
+static struct spi_driver ad7192_driver = {
+	.driver = {
+		.name	= "ad7192",
+		.owner	= THIS_MODULE,
+	},
+	.probe		= ad7192_probe,
+	.remove		= __devexit_p(ad7192_remove),
+	.id_table	= ad7192_id,
+};
+
+static int __init ad7192_init(void)
+{
+	return spi_register_driver(&ad7192_driver);
+}
+module_init(ad7192_init);
+
+static void __exit ad7192_exit(void)
+{
+	spi_unregister_driver(&ad7192_driver);
+}
+module_exit(ad7192_exit);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Analog Devices AD7190, AD7192, AD7195 ADC");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/adc/ad7192.h b/drivers/staging/iio/adc/ad7192.h
new file mode 100644
index 000000000000..a0a5b61a41f1
--- /dev/null
+++ b/drivers/staging/iio/adc/ad7192.h
@@ -0,0 +1,47 @@
+/*
+ * AD7190 AD7192 AD7195 SPI ADC driver
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+#ifndef IIO_ADC_AD7192_H_
+#define IIO_ADC_AD7192_H_
+
+/*
+ * TODO: struct ad7192_platform_data needs to go into include/linux/iio
+ */
+
+/**
+ * struct ad7192_platform_data - platform/board specific information
+ * @vref_mv:		the external reference voltage in millivolt
+ * @clock_source_sel:	[0..3]
+ *			0 External 4.92 MHz clock connected from MCLK1 to MCLK2
+ *			1 External Clock applied to MCLK2
+ *			2 Internal 4.92 MHz Clock not available at the MCLK2 pin
+ *			3 Internal 4.92 MHz Clock available at the MCLK2 pin
+ * @ext_clk_Hz:		the external clock frequency in Hz, if not set
+ *			the driver uses the internal clock (16.776 MHz)
+ * @refin2_en:		REFIN1/REFIN2 Reference Select (AD7190/2 only)
+ * @rej60_en:		50/60Hz notch filter enable
+ * @sinc3_en:		SINC3 filter enable (default SINC4)
+ * @chop_en:		CHOP mode enable
+ * @buf_en:		buffered input mode enable
+ * @unipolar_en:	unipolar mode enable
+ * @burnout_curr_en:	constant current generators on AIN(+|-) enable
+ */
+
+struct ad7192_platform_data {
+	u16		vref_mv;
+	u8		clock_source_sel;
+	u32		ext_clk_Hz;
+	bool		refin2_en;
+	bool		rej60_en;
+	bool		sinc3_en;
+	bool		chop_en;
+	bool		buf_en;
+	bool		unipolar_en;
+	bool		burnout_curr_en;
+};
+
+#endif /* IIO_ADC_AD7192_H_ */
diff --git a/drivers/staging/iio/adc/ad7280a.c b/drivers/staging/iio/adc/ad7280a.c
new file mode 100644
index 000000000000..ab6cf9cb5a7f
--- /dev/null
+++ b/drivers/staging/iio/adc/ad7280a.c
@@ -0,0 +1,992 @@
+/*
+ * AD7280A Lithium Ion Battery Monitoring System
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/slab.h>
+#include <linux/sysfs.h>
+#include <linux/spi/spi.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+
+#include "../iio.h"
+#include "../sysfs.h"
+
+#include "ad7280a.h"
+
+/* Registers */
+#define AD7280A_CELL_VOLTAGE_1		0x0  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_2		0x1  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_3		0x2  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_4		0x3  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_5		0x4  /* D11 to D0, Read only */
+#define AD7280A_CELL_VOLTAGE_6		0x5  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_1		0x6  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_2		0x7  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_3		0x8  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_4		0x9  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_5		0xA  /* D11 to D0, Read only */
+#define AD7280A_AUX_ADC_6		0xB  /* D11 to D0, Read only */
+#define AD7280A_SELF_TEST		0xC  /* D11 to D0, Read only */
+#define AD7280A_CONTROL_HB		0xD  /* D15 to D8, Read/write */
+#define AD7280A_CONTROL_LB		0xE  /* D7 to D0, Read/write */
+#define AD7280A_CELL_OVERVOLTAGE	0xF  /* D7 to D0, Read/write */
+#define AD7280A_CELL_UNDERVOLTAGE	0x10 /* D7 to D0, Read/write */
+#define AD7280A_AUX_ADC_OVERVOLTAGE	0x11 /* D7 to D0, Read/write */
+#define AD7280A_AUX_ADC_UNDERVOLTAGE	0x12 /* D7 to D0, Read/write */
+#define AD7280A_ALERT			0x13 /* D7 to D0, Read/write */
+#define AD7280A_CELL_BALANCE		0x14 /* D7 to D0, Read/write */
+#define AD7280A_CB1_TIMER		0x15 /* D7 to D0, Read/write */
+#define AD7280A_CB2_TIMER		0x16 /* D7 to D0, Read/write */
+#define AD7280A_CB3_TIMER		0x17 /* D7 to D0, Read/write */
+#define AD7280A_CB4_TIMER		0x18 /* D7 to D0, Read/write */
+#define AD7280A_CB5_TIMER		0x19 /* D7 to D0, Read/write */
+#define AD7280A_CB6_TIMER		0x1A /* D7 to D0, Read/write */
+#define AD7280A_PD_TIMER		0x1B /* D7 to D0, Read/write */
+#define AD7280A_READ			0x1C /* D7 to D0, Read/write */
+#define AD7280A_CNVST_CONTROL		0x1D /* D7 to D0, Read/write */
+
+/* Bits and Masks */
+#define AD7280A_CTRL_HB_CONV_INPUT_ALL			(0 << 6)
+#define AD7280A_CTRL_HB_CONV_INPUT_6CELL_AUX1_3_4	(1 << 6)
+#define AD7280A_CTRL_HB_CONV_INPUT_6CELL		(2 << 6)
+#define AD7280A_CTRL_HB_CONV_INPUT_SELF_TEST		(3 << 6)
+#define AD7280A_CTRL_HB_CONV_RES_READ_ALL		(0 << 4)
+#define AD7280A_CTRL_HB_CONV_RES_READ_6CELL_AUX1_3_4	(1 << 4)
+#define AD7280A_CTRL_HB_CONV_RES_READ_6CELL		(2 << 4)
+#define AD7280A_CTRL_HB_CONV_RES_READ_NO		(3 << 4)
+#define AD7280A_CTRL_HB_CONV_START_CNVST		(0 << 3)
+#define AD7280A_CTRL_HB_CONV_START_CS			(1 << 3)
+#define AD7280A_CTRL_HB_CONV_AVG_DIS			(0 << 1)
+#define AD7280A_CTRL_HB_CONV_AVG_2			(1 << 1)
+#define AD7280A_CTRL_HB_CONV_AVG_4			(2 << 1)
+#define AD7280A_CTRL_HB_CONV_AVG_8			(3 << 1)
+#define AD7280A_CTRL_HB_CONV_AVG(x)			((x) << 1)
+#define AD7280A_CTRL_HB_PWRDN_SW			(1 << 0)
+
+#define AD7280A_CTRL_LB_SWRST				(1 << 7)
+#define AD7280A_CTRL_LB_ACQ_TIME_400ns			(0 << 5)
+#define AD7280A_CTRL_LB_ACQ_TIME_800ns			(1 << 5)
+#define AD7280A_CTRL_LB_ACQ_TIME_1200ns			(2 << 5)
+#define AD7280A_CTRL_LB_ACQ_TIME_1600ns			(3 << 5)
+#define AD7280A_CTRL_LB_ACQ_TIME(x)			((x) << 5)
+#define AD7280A_CTRL_LB_MUST_SET			(1 << 4)
+#define AD7280A_CTRL_LB_THERMISTOR_EN			(1 << 3)
+#define AD7280A_CTRL_LB_LOCK_DEV_ADDR			(1 << 2)
+#define AD7280A_CTRL_LB_INC_DEV_ADDR			(1 << 1)
+#define AD7280A_CTRL_LB_DAISY_CHAIN_RB_EN		(1 << 0)
+
+#define AD7280A_ALERT_GEN_STATIC_HIGH			(1 << 6)
+#define AD7280A_ALERT_RELAY_SIG_CHAIN_DOWN		(3 << 6)
+
+#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 - \
+					AD7280A_CELL_VOLTAGE_1 + 1)
+
+#define AD7280A_DEVADDR_MASTER		0
+#define AD7280A_DEVADDR_ALL		0x1F
+/* 5-bit device address is sent LSB first */
+#define AD7280A_DEVADDR(addr)	(((addr & 0x1) << 4) | ((addr & 0x2) << 3) | \
+				(addr & 0x4) | ((addr & 0x8) >> 3) | \
+				((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
+#define POLYNOM_ORDER	8
+#define HIGHBIT		1 << (POLYNOM_ORDER - 1);
+
+struct ad7280_state {
+	struct spi_device		*spi;
+	struct iio_chan_spec		*channels;
+	struct iio_dev_attr		*iio_attr;
+	int				slave_num;
+	int				scan_cnt;
+	int				readback_delay_us;
+	unsigned char			crc_tab[256];
+	unsigned char			ctrl_hb;
+	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];
+};
+
+static void ad7280_crc8_build_table(unsigned char *crc_tab)
+{
+	unsigned char bit, crc;
+	int cnt, i;
+
+	for (cnt = 0; cnt < 256; cnt++) {
+		crc = cnt;
+		for (i = 0; i < 8; i++) {
+			bit = crc & HIGHBIT;
+			crc <<= 1;
+			if (bit)
+				crc ^= POLYNOM;
+		}
+		crc_tab[cnt] = crc;
+	}
+}
+
+static unsigned char ad7280_calc_crc8(unsigned char *crc_tab, unsigned 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 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..30 us
+ * however depending an the number of devices in the daisy chain and 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
+		msleep(1);
+}
+
+static int __ad7280_read32(struct spi_device *spi, unsigned *val)
+{
+	unsigned rx_buf, tx_buf = cpu_to_be32(AD7280A_READ_TXVAL);
+	int ret;
+
+	struct spi_transfer t = {
+		.tx_buf	= &tx_buf,
+		.rx_buf = &rx_buf,
+		.len = 4,
+	};
+	struct spi_message m;
+
+	spi_message_init(&m);
+	spi_message_add_tail(&t, &m);
+
+	ret = spi_sync(spi, &m);
+	if (ret)
+		return ret;
+
+	*val = be32_to_cpu(rx_buf);
+
+	return 0;
+}
+
+static int ad7280_write(struct ad7280_state *st, unsigned devaddr,
+			unsigned addr, bool all, unsigned val)
+{
+	unsigned reg = (devaddr << 27 | addr << 21 |
+			(val & 0xFF) << 13 | all << 12);
+
+	reg |= ad7280_calc_crc8(st->crc_tab, reg >> 11) << 3 | 0x2;
+	reg = cpu_to_be32(reg);
+
+	return spi_write(st->spi, &reg, 4);
+}
+
+static int ad7280_read(struct ad7280_state *st, unsigned devaddr,
+			unsigned addr)
+{
+	int ret;
+	unsigned tmp;
+
+	/* turns off the read operation on all parts */
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_HB, 1,
+			AD7280A_CTRL_HB_CONV_INPUT_ALL |
+			AD7280A_CTRL_HB_CONV_RES_READ_NO |
+			st->ctrl_hb);
+	if (ret)
+		return ret;
+
+	/* turns on the read operation on the addressed part */
+	ret = ad7280_write(st, devaddr, AD7280A_CONTROL_HB, 0,
+			AD7280A_CTRL_HB_CONV_INPUT_ALL |
+			AD7280A_CTRL_HB_CONV_RES_READ_ALL |
+			st->ctrl_hb);
+	if (ret)
+		return ret;
+
+	/* Set register address on the part to be read from */
+	ret = ad7280_write(st, devaddr, AD7280A_READ, 0, addr << 2);
+	if (ret)
+		return ret;
+
+	__ad7280_read32(st->spi, &tmp);
+
+	if (ad7280_check_crc(st, tmp))
+		return -EIO;
+
+	if (((tmp >> 27) != devaddr) || (((tmp >> 21) & 0x3F) != addr))
+		return -EFAULT;
+
+	return (tmp >> 13) & 0xFF;
+}
+
+static int ad7280_read_channel(struct ad7280_state *st, unsigned devaddr,
+			       unsigned addr)
+{
+	int ret;
+	unsigned tmp;
+
+	ret = ad7280_write(st, devaddr, AD7280A_READ, 0, addr << 2);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_HB, 1,
+			AD7280A_CTRL_HB_CONV_INPUT_ALL |
+			AD7280A_CTRL_HB_CONV_RES_READ_NO |
+			st->ctrl_hb);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, devaddr, AD7280A_CONTROL_HB, 0,
+			AD7280A_CTRL_HB_CONV_INPUT_ALL |
+			AD7280A_CTRL_HB_CONV_RES_READ_ALL |
+			AD7280A_CTRL_HB_CONV_START_CS |
+			st->ctrl_hb);
+	if (ret)
+		return ret;
+
+	ad7280_delay(st);
+
+	__ad7280_read32(st->spi, &tmp);
+
+	if (ad7280_check_crc(st, tmp))
+		return -EIO;
+
+	if (((tmp >> 27) != devaddr) || (((tmp >> 23) & 0xF) != addr))
+		return -EFAULT;
+
+	return (tmp >> 11) & 0xFFF;
+}
+
+static int ad7280_read_all_channels(struct ad7280_state *st, unsigned cnt,
+			     unsigned *array)
+{
+	int i, ret;
+	unsigned tmp, sum = 0;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ, 1,
+			   AD7280A_CELL_VOLTAGE_1 << 2);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_HB, 1,
+			AD7280A_CTRL_HB_CONV_INPUT_ALL |
+			AD7280A_CTRL_HB_CONV_RES_READ_ALL |
+			AD7280A_CTRL_HB_CONV_START_CS |
+			st->ctrl_hb);
+	if (ret)
+		return ret;
+
+	ad7280_delay(st);
+
+	for (i = 0; i < cnt; i++) {
+		__ad7280_read32(st->spi, &tmp);
+
+		if (ad7280_check_crc(st, tmp))
+			return -EIO;
+
+		if (array)
+			array[i] = tmp;
+		/* only sum cell voltages */
+		if (((tmp >> 23) & 0xF) <= AD7280A_CELL_VOLTAGE_6)
+			sum += ((tmp >> 11) & 0xFFF);
+	}
+
+	return sum;
+}
+
+static int ad7280_chain_setup(struct ad7280_state *st)
+{
+	unsigned val, n;
+	int ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_LB, 1,
+			AD7280A_CTRL_LB_DAISY_CHAIN_RB_EN |
+			AD7280A_CTRL_LB_LOCK_DEV_ADDR |
+			AD7280A_CTRL_LB_MUST_SET |
+			AD7280A_CTRL_LB_SWRST |
+			st->ctrl_lb);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_LB, 1,
+			AD7280A_CTRL_LB_DAISY_CHAIN_RB_EN |
+			AD7280A_CTRL_LB_LOCK_DEV_ADDR |
+			AD7280A_CTRL_LB_MUST_SET |
+			st->ctrl_lb);
+	if (ret)
+		return ret;
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_READ, 1,
+			AD7280A_CONTROL_LB << 2);
+	if (ret)
+		return ret;
+
+	for (n = 0; n <= AD7280A_MAX_CHAIN; n++) {
+		__ad7280_read32(st->spi, &val);
+		if (val == 0)
+			return n - 1;
+
+		if (ad7280_check_crc(st, val))
+			return -EIO;
+
+		if (n != AD7280A_DEVADDR(val >> 27))
+			return -EIO;
+	}
+
+	return -EFAULT;
+}
+
+static ssize_t ad7280_show_balance_sw(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7280_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+
+	return sprintf(buf, "%d\n",
+		       !!(st->cb_mask[this_attr->address >> 8] &
+		       (1 << ((this_attr->address & 0xFF) + 2))));
+}
+
+static ssize_t ad7280_store_balance_sw(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7280_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	bool readin;
+	int ret;
+	unsigned devaddr, ch;
+
+	ret = strtobool(buf, &readin);
+	if (ret)
+		return ret;
+
+	devaddr = this_attr->address >> 8;
+	ch = this_attr->address & 0xFF;
+
+	mutex_lock(&dev_info->mlock);
+	if (readin)
+		st->cb_mask[devaddr] |= 1 << (ch + 2);
+	else
+		st->cb_mask[devaddr] &= ~(1 << (ch + 2));
+
+	ret = ad7280_write(st, devaddr, AD7280A_CELL_BALANCE,
+			   0, st->cb_mask[devaddr]);
+	mutex_unlock(&dev_info->mlock);
+
+	return ret ? ret : len;
+}
+
+static ssize_t ad7280_show_balance_timer(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7280_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	int ret;
+	unsigned msecs;
+
+	mutex_lock(&dev_info->mlock);
+	ret = ad7280_read(st, this_attr->address >> 8,
+			this_attr->address & 0xFF);
+	mutex_unlock(&dev_info->mlock);
+
+	if (ret < 0)
+		return ret;
+
+	msecs = (ret >> 3) * 71500;
+
+	return sprintf(buf, "%d\n", msecs);
+}
+
+static ssize_t ad7280_store_balance_timer(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7280_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	long val;
+	int ret;
+
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	val /= 71500;
+
+	if (val > 31)
+		return -EINVAL;
+
+	mutex_lock(&dev_info->mlock);
+	ret = ad7280_write(st, this_attr->address >> 8,
+			   this_attr->address & 0xFF,
+			   0, (val & 0x1F) << 3);
+	mutex_unlock(&dev_info->mlock);
+
+	return ret ? ret : len;
+}
+
+static struct attribute *ad7280_attributes[AD7280A_MAX_CHAIN *
+					   AD7280A_CELLS_PER_DEV * 2 + 1];
+
+static struct attribute_group ad7280_attrs_group = {
+	.attrs = ad7280_attributes,
+};
+
+static int ad7280_channel_init(struct ad7280_state *st)
+{
+	int dev, ch, cnt;
+
+	st->channels = kzalloc(sizeof(*st->channels) *
+				((st->slave_num + 1) * 12 + 2), GFP_KERNEL);
+	if (st->channels == NULL)
+		return -ENOMEM;
+
+	for (dev = 0, cnt = 0; dev <= st->slave_num; dev++)
+		for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_AUX_ADC_6; ch++,
+			cnt++) {
+			if (ch < AD7280A_AUX_ADC_1) {
+				st->channels[cnt].type = IIO_IN_DIFF;
+				st->channels[cnt].channel = (dev * 6) + ch;
+				st->channels[cnt].channel2 =
+					st->channels[cnt].channel + 1;
+			} else {
+				st->channels[cnt].type = IIO_TEMP;
+				st->channels[cnt].channel = (dev * 6) + ch - 6;
+			}
+			st->channels[cnt].indexed = 1;
+			st->channels[cnt].info_mask =
+				(1 << IIO_CHAN_INFO_SCALE_SHARED);
+			st->channels[cnt].address =
+				AD7280A_DEVADDR(dev) << 8 | ch;
+			st->channels[cnt].scan_index = cnt;
+			st->channels[cnt].scan_type.sign = 'u';
+			st->channels[cnt].scan_type.realbits = 12;
+			st->channels[cnt].scan_type.storagebits = 32;
+			st->channels[cnt].scan_type.shift = 0;
+		}
+
+	st->channels[cnt].type = IIO_IN_DIFF;
+	st->channels[cnt].channel = 0;
+	st->channels[cnt].channel2 = dev * 6;
+	st->channels[cnt].address = AD7280A_ALL_CELLS;
+	st->channels[cnt].indexed = 1;
+	st->channels[cnt].info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED);
+	st->channels[cnt].scan_index = cnt;
+	st->channels[cnt].scan_type.sign = 'u';
+	st->channels[cnt].scan_type.realbits = 32;
+	st->channels[cnt].scan_type.storagebits = 32;
+	st->channels[cnt].scan_type.shift = 0;
+	cnt++;
+	st->channels[cnt].type = IIO_TIMESTAMP;
+	st->channels[cnt].channel = -1;
+	st->channels[cnt].scan_index = cnt;
+	st->channels[cnt].scan_type.sign = 's';
+	st->channels[cnt].scan_type.realbits = 64;
+	st->channels[cnt].scan_type.storagebits = 64;
+	st->channels[cnt].scan_type.shift = 0;
+
+	return cnt + 1;
+}
+
+static int ad7280_attr_init(struct ad7280_state *st)
+{
+	int dev, ch, cnt;
+
+	st->iio_attr = kzalloc(sizeof(*st->iio_attr) * (st->slave_num + 1) *
+				AD7280A_CELLS_PER_DEV * 2, GFP_KERNEL);
+	if (st->iio_attr == NULL)
+		return -ENOMEM;
+
+	for (dev = 0, cnt = 0; dev <= st->slave_num; dev++)
+		for (ch = AD7280A_CELL_VOLTAGE_1; ch <= AD7280A_CELL_VOLTAGE_6;
+			ch++, cnt++) {
+			st->iio_attr[cnt].address =
+				AD7280A_DEVADDR(dev) << 8 | ch;
+			st->iio_attr[cnt].dev_attr.attr.mode =
+				S_IWUSR | S_IRUGO;
+			st->iio_attr[cnt].dev_attr.show =
+				ad7280_show_balance_sw;
+			st->iio_attr[cnt].dev_attr.store =
+				ad7280_store_balance_sw;
+			st->iio_attr[cnt].dev_attr.attr.name =
+				kasprintf(GFP_KERNEL,
+					"in%d-in%d_balance_switch_en",
+					(dev * AD7280A_CELLS_PER_DEV) + ch,
+					(dev * AD7280A_CELLS_PER_DEV) + ch + 1);
+			ad7280_attributes[cnt] =
+				&st->iio_attr[cnt].dev_attr.attr;
+			cnt++;
+			st->iio_attr[cnt].address =
+				AD7280A_DEVADDR(dev) << 8 |
+				(AD7280A_CB1_TIMER + ch);
+			st->iio_attr[cnt].dev_attr.attr.mode =
+				S_IWUSR | S_IRUGO;
+			st->iio_attr[cnt].dev_attr.show =
+				ad7280_show_balance_timer;
+			st->iio_attr[cnt].dev_attr.store =
+				ad7280_store_balance_timer;
+			st->iio_attr[cnt].dev_attr.attr.name =
+				kasprintf(GFP_KERNEL, "in%d-in%d_balance_timer",
+					(dev * AD7280A_CELLS_PER_DEV) + ch,
+					(dev * AD7280A_CELLS_PER_DEV) + ch + 1);
+			ad7280_attributes[cnt] =
+				&st->iio_attr[cnt].dev_attr.attr;
+		}
+
+	ad7280_attributes[cnt] = NULL;
+
+	return 0;
+}
+
+static ssize_t ad7280_read_channel_config(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7280_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	unsigned val;
+
+	switch (this_attr->address) {
+	case AD7280A_CELL_OVERVOLTAGE:
+		val = 1000 + (st->cell_threshhigh * 1568) / 100;
+		break;
+	case AD7280A_CELL_UNDERVOLTAGE:
+		val = 1000 + (st->cell_threshlow * 1568) / 100;
+		break;
+	case AD7280A_AUX_ADC_OVERVOLTAGE:
+		val = (st->aux_threshhigh * 196) / 10;
+		break;
+	case AD7280A_AUX_ADC_UNDERVOLTAGE:
+		val = (st->aux_threshlow * 196) / 10;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	return sprintf(buf, "%d\n", val);
+}
+
+static ssize_t ad7280_write_channel_config(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad7280_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+
+	long val;
+	int ret;
+
+	ret = strict_strtol(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	switch (this_attr->address) {
+	case AD7280A_CELL_OVERVOLTAGE:
+	case AD7280A_CELL_UNDERVOLTAGE:
+		val = ((val - 1000) * 100) / 1568; /* LSB 15.68mV */
+		break;
+	case AD7280A_AUX_ADC_OVERVOLTAGE:
+	case AD7280A_AUX_ADC_UNDERVOLTAGE:
+		val = (val * 10) / 196; /* LSB 19.6mV */
+		break;
+	default:
+		return -EFAULT;
+	}
+
+	val = clamp(val, 0L, 0xFFL);
+
+	mutex_lock(&dev_info->mlock);
+	switch (this_attr->address) {
+	case AD7280A_CELL_OVERVOLTAGE:
+		st->cell_threshhigh = val;
+		break;
+	case AD7280A_CELL_UNDERVOLTAGE:
+		st->cell_threshlow = val;
+		break;
+	case AD7280A_AUX_ADC_OVERVOLTAGE:
+		st->aux_threshhigh = val;
+		break;
+	case AD7280A_AUX_ADC_UNDERVOLTAGE:
+		st->aux_threshlow = val;
+		break;
+	}
+
+	ret = ad7280_write(st, AD7280A_DEVADDR_MASTER,
+			   this_attr->address, 1, val);
+
+	mutex_unlock(&dev_info->mlock);
+
+	return ret ? ret : len;
+}
+
+static irqreturn_t ad7280_event_handler(int irq, void *private)
+{
+	struct iio_dev *dev_info = private;
+	struct ad7280_state *st = iio_priv(dev_info);
+	unsigned *channels;
+	int i, ret;
+
+	channels = kzalloc(sizeof(*channels) * st->scan_cnt, GFP_KERNEL);
+	if (channels == NULL)
+		return IRQ_HANDLED;
+
+	ret = ad7280_read_all_channels(st, st->scan_cnt, channels);
+	if (ret < 0)
+		return IRQ_HANDLED;
+
+	for (i = 0; i < st->scan_cnt; i++) {
+		if (((channels[i] >> 23) & 0xF) <= AD7280A_CELL_VOLTAGE_6) {
+			if (((channels[i] >> 11) & 0xFFF) >=
+				st->cell_threshhigh)
+				iio_push_event(dev_info, 0,
+					IIO_UNMOD_EVENT_CODE(IIO_IN_DIFF,
+					0,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_RISING),
+					iio_get_time_ns());
+			else if (((channels[i] >> 11) & 0xFFF) <=
+				st->cell_threshlow)
+				iio_push_event(dev_info, 0,
+					IIO_UNMOD_EVENT_CODE(IIO_IN_DIFF,
+					0,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_FALLING),
+					iio_get_time_ns());
+		} else {
+			if (((channels[i] >> 11) & 0xFFF) >= st->aux_threshhigh)
+				iio_push_event(dev_info, 0,
+					IIO_UNMOD_EVENT_CODE(IIO_TEMP,
+					0,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_RISING),
+					iio_get_time_ns());
+			else if (((channels[i] >> 11) & 0xFFF) <=
+				st->aux_threshlow)
+				iio_push_event(dev_info, 0,
+					IIO_UNMOD_EVENT_CODE(IIO_TEMP,
+					0,
+					IIO_EV_TYPE_THRESH,
+					IIO_EV_DIR_FALLING),
+					iio_get_time_ns());
+		}
+	}
+
+	kfree(channels);
+
+	return IRQ_HANDLED;
+}
+
+static IIO_DEVICE_ATTR_NAMED(in_thresh_low_value,
+		in-in_thresh_low_value,
+		S_IRUGO | S_IWUSR,
+		ad7280_read_channel_config,
+		ad7280_write_channel_config,
+		AD7280A_CELL_UNDERVOLTAGE);
+
+static IIO_DEVICE_ATTR_NAMED(in_thresh_high_value,
+		in-in_thresh_high_value,
+		S_IRUGO | S_IWUSR,
+		ad7280_read_channel_config,
+		ad7280_write_channel_config,
+		AD7280A_CELL_OVERVOLTAGE);
+
+static IIO_DEVICE_ATTR(temp_thresh_low_value,
+		S_IRUGO | S_IWUSR,
+		ad7280_read_channel_config,
+		ad7280_write_channel_config,
+		AD7280A_AUX_ADC_UNDERVOLTAGE);
+
+static IIO_DEVICE_ATTR(temp_thresh_high_value,
+		S_IRUGO | S_IWUSR,
+		ad7280_read_channel_config,
+		ad7280_write_channel_config,
+		AD7280A_AUX_ADC_OVERVOLTAGE);
+
+
+static struct attribute *ad7280_event_attributes[] = {
+	&iio_dev_attr_in_thresh_low_value.dev_attr.attr,
+	&iio_dev_attr_in_thresh_high_value.dev_attr.attr,
+	&iio_dev_attr_temp_thresh_low_value.dev_attr.attr,
+	&iio_dev_attr_temp_thresh_high_value.dev_attr.attr,
+	NULL,
+};
+
+static struct attribute_group ad7280_event_attrs_group = {
+	.attrs = ad7280_event_attributes,
+};
+
+static int ad7280_read_raw(struct iio_dev *dev_info,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long m)
+{
+	struct ad7280_state *st = iio_priv(dev_info);
+	unsigned int scale_uv;
+	int ret;
+
+	switch (m) {
+	case 0:
+		mutex_lock(&dev_info->mlock);
+		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(&dev_info->mlock);
+
+		if (ret < 0)
+			return ret;
+
+		*val = ret;
+
+		return IIO_VAL_INT;
+	case (1 << IIO_CHAN_INFO_SCALE_SHARED):
+		if ((chan->address & 0xFF) <= AD7280A_CELL_VOLTAGE_6)
+			scale_uv = (4000 * 1000) >> AD7280A_BITS;
+		else
+			scale_uv = (5000 * 1000) >> AD7280A_BITS;
+
+		*val =  scale_uv / 1000;
+		*val2 = (scale_uv % 1000) * 1000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	}
+	return -EINVAL;
+}
+
+static const struct iio_info ad7280_info = {
+	.read_raw = &ad7280_read_raw,
+	.num_interrupt_lines = 1,
+	.event_attrs = &ad7280_event_attrs_group,
+	.attrs = &ad7280_attrs_group,
+	.driver_module = THIS_MODULE,
+};
+
+static const struct ad7280_platform_data ad7793_default_pdata = {
+	.acquisition_time = AD7280A_ACQ_TIME_400ns,
+	.conversion_averaging = AD7280A_CONV_AVG_DIS,
+	.thermistor_term_en = true,
+};
+
+static int __devinit ad7280_probe(struct spi_device *spi)
+{
+	const struct ad7280_platform_data *pdata = spi->dev.platform_data;
+	struct ad7280_state *st;
+	int ret, regdone = 0;
+	const unsigned short tACQ_ns[4] = {465, 1010, 1460, 1890};
+	const unsigned short nAVG[4] = {1, 2, 4, 8};
+	struct iio_dev *indio_dev = iio_allocate_device(sizeof(*st));
+
+	if (indio_dev == NULL)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	spi_set_drvdata(spi, indio_dev);
+	st->spi = spi;
+
+	if (!pdata)
+		pdata = &ad7793_default_pdata;
+
+	ad7280_crc8_build_table(st->crc_tab);
+
+	st->spi->max_speed_hz = AD7280A_MAX_SPI_CLK_Hz;
+	st->spi->mode = SPI_MODE_1;
+	spi_setup(st->spi);
+
+	st->ctrl_lb = AD7280A_CTRL_LB_ACQ_TIME(pdata->acquisition_time & 0x3);
+	st->ctrl_hb = AD7280A_CTRL_HB_CONV_AVG(pdata->conversion_averaging
+			& 0x3) | (pdata->thermistor_term_en ?
+			AD7280A_CTRL_LB_THERMISTOR_EN : 0);
+
+	ret = ad7280_chain_setup(st);
+	if (ret < 0)
+		goto error_free_device;
+
+	st->slave_num = ret;
+	st->scan_cnt = (st->slave_num + 1) * AD7280A_NUM_CH;
+	st->cell_threshhigh = 0xFF;
+	st->aux_threshhigh = 0xFF;
+
+	/*
+	 * Total Conversion Time = ((tACQ + tCONV) *
+	 *			   (Number of Conversions per Part)) −
+	 *			   tACQ + ((N - 1) * tDELAY)
+	 *
+	 * Readback Delay = Total Conversion Time + tWAIT
+	 */
+
+	st->readback_delay_us =
+		((tACQ_ns[pdata->acquisition_time & 0x3] + 695) *
+		(AD7280A_NUM_CH * nAVG[pdata->conversion_averaging & 0x3]))
+		- tACQ_ns[pdata->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 */
+
+	indio_dev->name = spi_get_device_id(spi)->name;
+	indio_dev->dev.parent = &spi->dev;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+
+	ret = ad7280_channel_init(st);
+	if (ret < 0)
+		goto error_free_device;
+
+	indio_dev->num_channels = ret;
+	indio_dev->channels = st->channels;
+	indio_dev->info = &ad7280_info;
+
+	ret = ad7280_attr_init(st);
+	if (ret < 0)
+		goto error_free_channels;
+
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto error_free_attr;
+	regdone = 1;
+
+	if (spi->irq > 0) {
+		ret = ad7280_write(st, AD7280A_DEVADDR_MASTER,
+				   AD7280A_ALERT, 1,
+				   AD7280A_ALERT_RELAY_SIG_CHAIN_DOWN);
+		if (ret)
+			goto error_free_attr;
+
+		ret = ad7280_write(st, AD7280A_DEVADDR(st->slave_num),
+				   AD7280A_ALERT, 0,
+				   AD7280A_ALERT_GEN_STATIC_HIGH |
+				   (pdata->chain_last_alert_ignore & 0xF));
+		if (ret)
+			goto error_free_attr;
+
+		ret = request_threaded_irq(spi->irq,
+					   NULL,
+					   ad7280_event_handler,
+					   IRQF_TRIGGER_FALLING |
+					   IRQF_ONESHOT,
+					   indio_dev->name,
+					   indio_dev);
+		if (ret)
+			goto error_free_attr;
+	}
+
+	return 0;
+
+error_free_attr:
+	kfree(st->iio_attr);
+
+error_free_channels:
+	kfree(st->channels);
+
+error_free_device:
+	if (regdone)
+		iio_device_unregister(indio_dev);
+	else
+		iio_free_device(indio_dev);
+
+	return ret;
+}
+
+static int __devexit ad7280_remove(struct spi_device *spi)
+{
+	struct iio_dev *indio_dev = spi_get_drvdata(spi);
+	struct ad7280_state *st = iio_priv(indio_dev);
+
+	if (spi->irq > 0)
+		free_irq(spi->irq, indio_dev);
+
+	ad7280_write(st, AD7280A_DEVADDR_MASTER, AD7280A_CONTROL_HB, 1,
+			AD7280A_CTRL_HB_PWRDN_SW | st->ctrl_hb);
+
+	kfree(st->channels);
+	kfree(st->iio_attr);
+	iio_device_unregister(indio_dev);
+
+	return 0;
+}
+
+static const struct spi_device_id ad7280_id[] = {
+	{"ad7280a", 0},
+	{}
+};
+
+static struct spi_driver ad7280_driver = {
+	.driver = {
+		.name	= "ad7280",
+		.bus	= &spi_bus_type,
+		.owner	= THIS_MODULE,
+	},
+	.probe		= ad7280_probe,
+	.remove		= __devexit_p(ad7280_remove),
+	.id_table	= ad7280_id,
+};
+
+static int __init ad7280_init(void)
+{
+	return spi_register_driver(&ad7280_driver);
+}
+module_init(ad7280_init);
+
+static void __exit ad7280_exit(void)
+{
+	spi_unregister_driver(&ad7280_driver);
+}
+module_exit(ad7280_exit);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Analog Devices AD7280A");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/adc/ad7280a.h b/drivers/staging/iio/adc/ad7280a.h
new file mode 100644
index 000000000000..20400b0045e5
--- /dev/null
+++ b/drivers/staging/iio/adc/ad7280a.h
@@ -0,0 +1,38 @@
+/*
+ * AD7280A Lithium Ion Battery Monitoring System
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef IIO_ADC_AD7280_H_
+#define IIO_ADC_AD7280_H_
+
+/*
+ * TODO: struct ad7280_platform_data needs to go into include/linux/iio
+ */
+
+#define AD7280A_ACQ_TIME_400ns			0
+#define AD7280A_ACQ_TIME_800ns			1
+#define AD7280A_ACQ_TIME_1200ns			2
+#define AD7280A_ACQ_TIME_1600ns			3
+
+#define AD7280A_CONV_AVG_DIS			0
+#define AD7280A_CONV_AVG_2			1
+#define AD7280A_CONV_AVG_4			2
+#define AD7280A_CONV_AVG_8			3
+
+#define AD7280A_ALERT_REMOVE_VIN5		(1 << 2)
+#define AD7280A_ALERT_REMOVE_VIN4_VIN5		(2 << 2)
+#define AD7280A_ALERT_REMOVE_AUX5		(1 << 0)
+#define AD7280A_ALERT_REMOVE_AUX4_AUX5		(2 << 0)
+
+struct ad7280_platform_data {
+	unsigned acquisition_time;
+	unsigned conversion_averaging;
+	unsigned chain_last_alert_ignore;
+	bool thermistor_term_en;
+};
+
+#endif /* IIO_ADC_AD7280_H_ */
diff --git a/drivers/staging/iio/adc/ad7291.c b/drivers/staging/iio/adc/ad7291.c
index 96cbb17bc2cd..e884c78d8047 100644
--- a/drivers/staging/iio/adc/ad7291.c
+++ b/drivers/staging/iio/adc/ad7291.c
@@ -14,6 +14,7 @@
 #include <linux/sysfs.h>
 #include <linux/list.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/adc/ad7298_core.c b/drivers/staging/iio/adc/ad7298_core.c
index b8e4ae29b0b5..3e5bead26367 100644
--- a/drivers/staging/iio/adc/ad7298_core.c
+++ b/drivers/staging/iio/adc/ad7298_core.c
@@ -14,11 +14,11 @@
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
 #include <linux/delay.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "adc.h"
 
 #include "ad7298.h"
 
diff --git a/drivers/staging/iio/adc/ad7298_ring.c b/drivers/staging/iio/adc/ad7298_ring.c
index a04c03352624..741818c0b829 100644
--- a/drivers/staging/iio/adc/ad7298_ring.c
+++ b/drivers/staging/iio/adc/ad7298_ring.c
@@ -7,17 +7,14 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
-#include <linux/sysfs.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
 #include "../ring_generic.h"
 #include "../ring_sw.h"
-#include "../trigger.h"
-#include "../sysfs.h"
+#include "../trigger_consumer.h"
 
 #include "ad7298.h"
 
@@ -120,7 +117,7 @@ static int ad7298_ring_preenable(struct iio_dev *indio_dev)
 static irqreturn_t ad7298_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad7298_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	s64 time_ns;
@@ -192,11 +189,6 @@ error_ret:
 
 void ad7298_ring_cleanup(struct iio_dev *indio_dev)
 {
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/adc/ad7314.c b/drivers/staging/iio/adc/ad7314.c
index 9070d9cac725..e3d38dbd846f 100644
--- a/drivers/staging/iio/adc/ad7314.c
+++ b/drivers/staging/iio/adc/ad7314.c
@@ -11,6 +11,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/spi/spi.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/adc/ad7476_core.c b/drivers/staging/iio/adc/ad7476_core.c
index c21089894d28..bb8be5daa6b8 100644
--- a/drivers/staging/iio/adc/ad7476_core.c
+++ b/drivers/staging/iio/adc/ad7476_core.c
@@ -13,11 +13,11 @@
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "adc.h"
 
 #include "ad7476.h"
 
diff --git a/drivers/staging/iio/adc/ad7476_ring.c b/drivers/staging/iio/adc/ad7476_ring.c
index a92fc5a1a604..b109afb89846 100644
--- a/drivers/staging/iio/adc/ad7476_ring.c
+++ b/drivers/staging/iio/adc/ad7476_ring.c
@@ -11,14 +11,12 @@
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
-#include <linux/sysfs.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
 #include "../ring_generic.h"
 #include "../ring_sw.h"
-#include "../trigger.h"
-#include "../sysfs.h"
+#include "../trigger_consumer.h"
 
 #include "ad7476.h"
 
@@ -78,7 +76,7 @@ static int ad7476_ring_preenable(struct iio_dev *indio_dev)
 static irqreturn_t ad7476_trigger_handler(int irq, void  *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad7476_state *st = iio_priv(indio_dev);
 	s64 time_ns;
 	__u8 *rxbuf;
@@ -154,12 +152,6 @@ error_ret:
 
 void ad7476_ring_cleanup(struct iio_dev *indio_dev)
 {
-	/* ensure that the trigger has been detached */
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/adc/ad7606_core.c b/drivers/staging/iio/adc/ad7606_core.c
index 459371ae4dcc..ef0558130ca7 100644
--- a/drivers/staging/iio/adc/ad7606_core.c
+++ b/drivers/staging/iio/adc/ad7606_core.c
@@ -16,11 +16,11 @@
 #include <linux/gpio.h>
 #include <linux/delay.h>
 #include <linux/sched.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "adc.h"
 
 #include "ad7606.h"
 
diff --git a/drivers/staging/iio/adc/ad7606_ring.c b/drivers/staging/iio/adc/ad7606_ring.c
index a199bf48396c..e6424300c8e7 100644
--- a/drivers/staging/iio/adc/ad7606_ring.c
+++ b/drivers/staging/iio/adc/ad7606_ring.c
@@ -10,13 +10,11 @@
 #include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
-#include <linux/sysfs.h>
 
 #include "../iio.h"
 #include "../ring_generic.h"
 #include "../ring_sw.h"
-#include "../trigger.h"
-#include "../sysfs.h"
+#include "../trigger_consumer.h"
 
 #include "ad7606.h"
 
@@ -82,8 +80,7 @@ static int ad7606_ring_preenable(struct iio_dev *indio_dev)
 static irqreturn_t ad7606_trigger_handler_th_bh(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
-	struct ad7606_state *st = iio_priv(indio_dev);
+	struct ad7606_state *st = iio_priv(pf->indio_dev);
 
 	gpio_set_value(st->pdata->gpio_convst, 1);
 
@@ -200,11 +197,6 @@ error_ret:
 
 void ad7606_ring_cleanup(struct iio_dev *indio_dev)
 {
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/adc/ad7745.c b/drivers/staging/iio/adc/ad7745.c
index 4c13f26aa9ae..91d598c1a14b 100644
--- a/drivers/staging/iio/adc/ad7745.c
+++ b/drivers/staging/iio/adc/ad7745.c
@@ -14,6 +14,7 @@
 #include <linux/sysfs.h>
 #include <linux/list.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/adc/ad7780.c b/drivers/staging/iio/adc/ad7780.c
index e0c7b6cc05c7..46d1f8f3fe82 100644
--- a/drivers/staging/iio/adc/ad7780.c
+++ b/drivers/staging/iio/adc/ad7780.c
@@ -16,11 +16,11 @@
 #include <linux/err.h>
 #include <linux/sched.h>
 #include <linux/gpio.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "adc.h"
 
 #include "ad7780.h"
 
diff --git a/drivers/staging/iio/adc/ad7793.c b/drivers/staging/iio/adc/ad7793.c
index 90f6c039d6c6..1bcb3ebb1bc6 100644
--- a/drivers/staging/iio/adc/ad7793.c
+++ b/drivers/staging/iio/adc/ad7793.c
@@ -22,7 +22,7 @@
 #include "../ring_generic.h"
 #include "../ring_sw.h"
 #include "../trigger.h"
-#include "adc.h"
+#include "../trigger_consumer.h"
 
 #include "ad7793.h"
 
@@ -402,7 +402,7 @@ static int ad7793_ring_postdisable(struct iio_dev *indio_dev)
 static irqreturn_t ad7793_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	struct ad7793_state *st = iio_priv(indio_dev);
 	s64 dat64[2];
@@ -470,12 +470,6 @@ error_ret:
 
 static void ad7793_ring_cleanup(struct iio_dev *indio_dev)
 {
-	/* ensure that the trigger has been detached */
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/adc/ad7816.c b/drivers/staging/iio/adc/ad7816.c
index 0c84217bde3d..f5aa57bb8f23 100644
--- a/drivers/staging/iio/adc/ad7816.c
+++ b/drivers/staging/iio/adc/ad7816.c
@@ -14,6 +14,7 @@
 #include <linux/sysfs.h>
 #include <linux/list.h>
 #include <linux/spi/spi.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -246,7 +247,7 @@ static const struct attribute_group ad7816_attribute_group = {
  * temperature bound events
  */
 
-#define IIO_EVENT_CODE_AD7816_OTI IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_TEMP, \
+#define IIO_EVENT_CODE_AD7816_OTI IIO_UNMOD_EVENT_CODE(IIO_TEMP,	\
 						       0,		\
 						       IIO_EV_TYPE_THRESH, \
 						       IIO_EV_DIR_FALLING)
diff --git a/drivers/staging/iio/adc/ad7887_core.c b/drivers/staging/iio/adc/ad7887_core.c
index 3d9121e5c37d..74e222f92431 100644
--- a/drivers/staging/iio/adc/ad7887_core.c
+++ b/drivers/staging/iio/adc/ad7887_core.c
@@ -13,11 +13,12 @@
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "adc.h"
+
 
 #include "ad7887.h"
 
diff --git a/drivers/staging/iio/adc/ad7887_ring.c b/drivers/staging/iio/adc/ad7887_ring.c
index 0ac7c0b9d71d..6b3daf41e0c6 100644
--- a/drivers/staging/iio/adc/ad7887_ring.c
+++ b/drivers/staging/iio/adc/ad7887_ring.c
@@ -8,17 +8,14 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
 #include <linux/slab.h>
-#include <linux/sysfs.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
 #include "../ring_generic.h"
 #include "../ring_sw.h"
-#include "../trigger.h"
-#include "../sysfs.h"
+#include "../trigger_consumer.h"
 
 #include "ad7887.h"
 
@@ -115,7 +112,7 @@ static int ad7887_ring_postdisable(struct iio_dev *indio_dev)
 static irqreturn_t ad7887_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad7887_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	s64 time_ns;
@@ -191,12 +188,6 @@ error_ret:
 
 void ad7887_ring_cleanup(struct iio_dev *indio_dev)
 {
-	/* ensure that the trigger has been detached */
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/adc/ad799x_core.c b/drivers/staging/iio/adc/ad799x_core.c
index 92cfe2e3ea4a..33e4e2197143 100644
--- a/drivers/staging/iio/adc/ad799x_core.c
+++ b/drivers/staging/iio/adc/ad799x_core.c
@@ -31,12 +31,12 @@
 #include <linux/slab.h>
 #include <linux/types.h>
 #include <linux/err.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-
 #include "../ring_generic.h"
-#include "adc.h"
+
 #include "ad799x.h"
 
 /*
@@ -336,8 +336,14 @@ static irqreturn_t ad799x_event_handler(int irq, void *private)
 		if (status & (1 << i))
 			iio_push_event(indio_dev, 0,
 				       i & 0x1 ?
-				       IIO_EVENT_CODE_IN_HIGH_THRESH(i >> 1) :
-				       IIO_EVENT_CODE_IN_LOW_THRESH(i >> 1),
+				       IIO_UNMOD_EVENT_CODE(IIO_IN,
+							    (i >> 1),
+							    IIO_EV_TYPE_THRESH,
+							    IIO_EV_DIR_RISING) :
+				       IIO_UNMOD_EVENT_CODE(IIO_IN,
+							    (i >> 1),
+							    IIO_EV_TYPE_THRESH,
+							    IIO_EV_DIR_FALLING),
 				       iio_get_time_ns());
 	}
 
diff --git a/drivers/staging/iio/adc/ad799x_ring.c b/drivers/staging/iio/adc/ad799x_ring.c
index 0376a826c26c..8f1fc52560f1 100644
--- a/drivers/staging/iio/adc/ad799x_ring.c
+++ b/drivers/staging/iio/adc/ad799x_ring.c
@@ -10,10 +10,8 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
 #include <linux/list.h>
 #include <linux/i2c.h>
 #include <linux/bitops.h>
@@ -21,8 +19,7 @@
 #include "../iio.h"
 #include "../ring_generic.h"
 #include "../ring_sw.h"
-#include "../trigger.h"
-#include "../sysfs.h"
+#include "../trigger_consumer.h"
 
 #include "ad799x.h"
 
@@ -108,7 +105,7 @@ static int ad799x_ring_preenable(struct iio_dev *indio_dev)
 static irqreturn_t ad799x_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct ad799x_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	s64 time_ns;
@@ -207,12 +204,6 @@ error_ret:
 
 void ad799x_ring_cleanup(struct iio_dev *indio_dev)
 {
-	/* ensure that the trigger has been detached */
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/adc/adc.h b/drivers/staging/iio/adc/adc.h
deleted file mode 100644
index 40c5949880b4..000000000000
--- a/drivers/staging/iio/adc/adc.h
+++ /dev/null
@@ -1,42 +0,0 @@
-/*
- * adc.h - sysfs attributes associated with ADCs
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published by
- * the Free Software Foundation.
- *
- * Copyright (c) 2008 Jonathan Cameron <jic23@cam.ac.uk>
- *
- */
-
-/* Deprecated */
-#define IIO_DEV_ATTR_ADC(_num, _show, _addr)			\
-  IIO_DEVICE_ATTR(adc_##_num, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_IN_RAW(_num, _show, _addr)				\
-	IIO_DEVICE_ATTR(in##_num##_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_IN_NAMED_RAW(_num, _name, _show, _addr)		\
-	IIO_DEVICE_ATTR(in##_num##_##_name##_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_IN_DIFF_RAW(_nump, _numn, _show, _addr)		\
-	IIO_DEVICE_ATTR_NAMED(in##_nump##min##_numn##_raw,		\
-			      in##_nump-in##_numn##_raw,		\
-			      S_IRUGO,					\
-			      _show,					\
-			      NULL,					\
-			      _addr)
-
-
-#define IIO_CONST_ATTR_IN_NAMED_OFFSET(_num, _name, _string)	\
-	IIO_CONST_ATTR(in##_num##_##_name##_offset, _string)
-
-#define IIO_CONST_ATTR_IN_NAMED_SCALE(_num, _name, _string)	\
-	IIO_CONST_ATTR(in##_num##_##_name##_scale, _string)
-
-#define IIO_EVENT_CODE_IN_HIGH_THRESH(a)				\
-	IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_IN, a, IIO_EV_TYPE_THRESH,	\
-			     IIO_EV_DIR_RISING)
-#define IIO_EVENT_CODE_IN_LOW_THRESH(a)				     \
-	IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_IN, a, IIO_EV_TYPE_THRESH, \
-			     IIO_EV_DIR_FALLING)
diff --git a/drivers/staging/iio/adc/adt7310.c b/drivers/staging/iio/adc/adt7310.c
index 1a41b8034405..697ad1b91954 100644
--- a/drivers/staging/iio/adc/adt7310.c
+++ b/drivers/staging/iio/adc/adt7310.c
@@ -13,6 +13,7 @@
 #include <linux/sysfs.h>
 #include <linux/list.h>
 #include <linux/spi/spi.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/adc/adt7410.c b/drivers/staging/iio/adc/adt7410.c
index 76aa0639a55a..b7631f18ee2d 100644
--- a/drivers/staging/iio/adc/adt7410.c
+++ b/drivers/staging/iio/adc/adt7410.c
@@ -13,6 +13,7 @@
 #include <linux/sysfs.h>
 #include <linux/list.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/adc/adt75.c b/drivers/staging/iio/adc/adt75.c
index 38f141de6a4b..dd782776ce34 100644
--- a/drivers/staging/iio/adc/adt75.c
+++ b/drivers/staging/iio/adc/adt75.c
@@ -12,6 +12,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/i2c.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -257,7 +258,7 @@ static const struct attribute_group adt75_attribute_group = {
  * temperature bound events
  */
 
-#define IIO_EVENT_CODE_ADT75_OTI IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_TEMP, \
+#define IIO_EVENT_CODE_ADT75_OTI IIO_UNMOD_EVENT_CODE(IIO_TEMP,		\
 						      0,		\
 						      IIO_EV_TYPE_THRESH, \
 						      IIO_EV_DIR_FALLING)
diff --git a/drivers/staging/iio/adc/max1363_core.c b/drivers/staging/iio/adc/max1363_core.c
index 72b0917412ee..e10a4d828146 100644
--- a/drivers/staging/iio/adc/max1363_core.c
+++ b/drivers/staging/iio/adc/max1363_core.c
@@ -30,12 +30,12 @@
 #include <linux/regulator/consumer.h>
 #include <linux/slab.h>
 #include <linux/err.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-
 #include "../ring_generic.h"
-#include "adc.h"
+
 #include "max1363.h"
 
 #define MAX1363_MODE_SINGLE(_num, _mask) {				\
@@ -255,7 +255,7 @@ static int max1363_read_raw(struct iio_dev *indio_dev,
 	switch (m) {
 	case 0:
 		ret = max1363_read_single_chan(indio_dev, chan, val, m);
-		if (ret)
+		if (ret < 0)
 			return ret;
 		return IIO_VAL_INT;
 	case (1 << IIO_CHAN_INFO_SCALE_SHARED):
@@ -592,10 +592,14 @@ static int max1363_write_thresh(struct iio_dev *indio_dev,
 }
 
 static const int max1363_event_codes[] = {
-	IIO_EVENT_CODE_IN_LOW_THRESH(3), IIO_EVENT_CODE_IN_HIGH_THRESH(3),
-	IIO_EVENT_CODE_IN_LOW_THRESH(2), IIO_EVENT_CODE_IN_HIGH_THRESH(2),
-	IIO_EVENT_CODE_IN_LOW_THRESH(1), IIO_EVENT_CODE_IN_HIGH_THRESH(1),
-	IIO_EVENT_CODE_IN_LOW_THRESH(0), IIO_EVENT_CODE_IN_HIGH_THRESH(0)
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 0, IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 1, IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 2, IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 3, IIO_EV_TYPE_THRESH, IIO_EV_DIR_FALLING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 0, IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 1, IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 2, IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
+	IIO_UNMOD_EVENT_CODE(IIO_IN, 3, IIO_EV_TYPE_THRESH, IIO_EV_DIR_RISING),
 };
 
 static irqreturn_t max1363_event_handler(int irq, void *private)
@@ -1295,6 +1299,8 @@ static int __devinit max1363_probe(struct i2c_client *client,
 
 	indio_dev->info = st->chip_info->info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = st->chip_info->channels;
+	indio_dev->num_channels = st->chip_info->num_channels;
 	ret = max1363_initial_setup(st);
 	if (ret < 0)
 		goto error_free_available_scan_masks;
diff --git a/drivers/staging/iio/adc/max1363_ring.c b/drivers/staging/iio/adc/max1363_ring.c
index f43befd1f776..be601e07639d 100644
--- a/drivers/staging/iio/adc/max1363_ring.c
+++ b/drivers/staging/iio/adc/max1363_ring.c
@@ -9,19 +9,15 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/i2c.h>
 #include <linux/bitops.h>
 
 #include "../iio.h"
 #include "../ring_generic.h"
 #include "../ring_sw.h"
-#include "../trigger.h"
-#include "../sysfs.h"
+#include "../trigger_consumer.h"
 
 #include "max1363.h"
 
@@ -108,7 +104,7 @@ static int max1363_ring_preenable(struct iio_dev *indio_dev)
 static irqreturn_t max1363_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct max1363_state *st = iio_priv(indio_dev);
 	s64 time_ns;
 	__u8 *rxbuf;
@@ -199,11 +195,6 @@ error_ret:
 void max1363_ring_cleanup(struct iio_dev *indio_dev)
 {
 	/* ensure that the trigger has been detached */
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/addac/adt7316-i2c.c b/drivers/staging/iio/addac/adt7316-i2c.c
index 52d1ea349635..69fab53dec9d 100644
--- a/drivers/staging/iio/addac/adt7316-i2c.c
+++ b/drivers/staging/iio/addac/adt7316-i2c.c
@@ -11,6 +11,7 @@
 #include <linux/kernel.h>
 #include <linux/i2c.h>
 #include <linux/interrupt.h>
+#include <linux/module.h>
 
 #include "adt7316.h"
 
diff --git a/drivers/staging/iio/addac/adt7316.c b/drivers/staging/iio/addac/adt7316.c
index 637316f79f78..474d946866de 100644
--- a/drivers/staging/iio/addac/adt7316.c
+++ b/drivers/staging/iio/addac/adt7316.c
@@ -17,6 +17,7 @@
 #include <linux/list.h>
 #include <linux/i2c.h>
 #include <linux/rtc.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -203,7 +204,7 @@ struct adt7316_chip_info {
 #define ADT7316_TEMP_INT_MASK		0x1F
 #define ADT7516_AIN_INT_MASK		0xE0
 #define ADT7316_TEMP_AIN_INT_MASK	\
-	(ADT7316_TEMP_INT_MASK | ADT7316_TEMP_INT_MASK)
+	(ADT7316_TEMP_INT_MASK)
 
 /*
  * struct adt7316_chip_info - chip specifc information
diff --git a/drivers/staging/iio/dac/ad5446.c b/drivers/staging/iio/dac/ad5446.c
index e8a9d0bf1edb..c670fb9de31f 100644
--- a/drivers/staging/iio/dac/ad5446.c
+++ b/drivers/staging/iio/dac/ad5446.c
@@ -16,6 +16,7 @@
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/dac/ad5504.c b/drivers/staging/iio/dac/ad5504.c
index 1915f459868b..5243ef962b5c 100644
--- a/drivers/staging/iio/dac/ad5504.c
+++ b/drivers/staging/iio/dac/ad5504.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/regulator/consumer.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -251,7 +252,7 @@ static struct attribute_group ad5504_ev_attribute_group = {
 static irqreturn_t ad5504_event_handler(int irq, void *private)
 {
 	iio_push_event(private, 0,
-		       IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_TEMP,
+		       IIO_UNMOD_EVENT_CODE(IIO_TEMP,
 					    0,
 					    IIO_EV_TYPE_THRESH,
 					    IIO_EV_DIR_RISING),
@@ -338,7 +339,7 @@ error_free_dev:
 	iio_free_device(indio_dev);
 error_disable_reg:
 	if (!IS_ERR(reg))
-		regulator_disable(st->reg);
+		regulator_disable(reg);
 error_put_reg:
 	if (!IS_ERR(reg))
 		regulator_put(reg);
diff --git a/drivers/staging/iio/dac/ad5624r_spi.c b/drivers/staging/iio/dac/ad5624r_spi.c
index a5b3776718e9..7303bb139014 100644
--- a/drivers/staging/iio/dac/ad5624r_spi.c
+++ b/drivers/staging/iio/dac/ad5624r_spi.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/regulator/consumer.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/dac/ad5686.c b/drivers/staging/iio/dac/ad5686.c
index fd67cfa5edb6..ae71d3f87d64 100644
--- a/drivers/staging/iio/dac/ad5686.c
+++ b/drivers/staging/iio/dac/ad5686.c
@@ -10,6 +10,7 @@
 #include <linux/gpio.h>
 #include <linux/fs.h>
 #include <linux/device.h>
+#include <linux/module.h>
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
diff --git a/drivers/staging/iio/dac/ad5791.c b/drivers/staging/iio/dac/ad5791.c
index 64770d2a1b4c..5c45d0fe8165 100644
--- a/drivers/staging/iio/dac/ad5791.c
+++ b/drivers/staging/iio/dac/ad5791.c
@@ -15,6 +15,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/regulator/consumer.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -381,7 +382,6 @@ error_put_reg_pos:
 	if (!IS_ERR(reg_vdd))
 		regulator_put(reg_vdd);
 
-error_ret:
 	return ret;
 }
 
diff --git a/drivers/staging/iio/dds/ad5930.c b/drivers/staging/iio/dds/ad5930.c
index 0b2aa4cafdd8..4847ea2941d4 100644
--- a/drivers/staging/iio/dds/ad5930.c
+++ b/drivers/staging/iio/dds/ad5930.c
@@ -14,6 +14,7 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/dds/ad9832.c b/drivers/staging/iio/dds/ad9832.c
index e3e61a469bb8..e6cfa649e8c9 100644
--- a/drivers/staging/iio/dds/ad9832.c
+++ b/drivers/staging/iio/dds/ad9832.c
@@ -13,6 +13,7 @@
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <asm/div64.h>
 
 #include "../iio.h"
diff --git a/drivers/staging/iio/dds/ad9834.c b/drivers/staging/iio/dds/ad9834.c
index e6454d58fe41..a5b5aedd7691 100644
--- a/drivers/staging/iio/dds/ad9834.c
+++ b/drivers/staging/iio/dds/ad9834.c
@@ -16,6 +16,7 @@
 #include <linux/spi/spi.h>
 #include <linux/regulator/consumer.h>
 #include <linux/err.h>
+#include <linux/module.h>
 #include <asm/div64.h>
 
 #include "../iio.h"
diff --git a/drivers/staging/iio/dds/ad9850.c b/drivers/staging/iio/dds/ad9850.c
index d7c9d05f6359..7f2dd47334f3 100644
--- a/drivers/staging/iio/dds/ad9850.c
+++ b/drivers/staging/iio/dds/ad9850.c
@@ -14,6 +14,7 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/dds/ad9852.c b/drivers/staging/iio/dds/ad9852.c
index 0184585425d8..7f65b92598d5 100644
--- a/drivers/staging/iio/dds/ad9852.c
+++ b/drivers/staging/iio/dds/ad9852.c
@@ -14,6 +14,7 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -217,7 +218,6 @@ static struct attribute *ad9852_attributes[] = {
 };
 
 static const struct attribute_group ad9852_attribute_group = {
-	.name = DRV_NAME,
 	.attrs = ad9852_attributes,
 };
 
diff --git a/drivers/staging/iio/dds/ad9910.c b/drivers/staging/iio/dds/ad9910.c
index 0fa217f7b901..b72df8ca7235 100644
--- a/drivers/staging/iio/dds/ad9910.c
+++ b/drivers/staging/iio/dds/ad9910.c
@@ -14,6 +14,7 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -352,7 +353,6 @@ static struct attribute *ad9910_attributes[] = {
 };
 
 static const struct attribute_group ad9910_attribute_group = {
-	.name = DRV_NAME,
 	.attrs = ad9910_attributes,
 };
 
diff --git a/drivers/staging/iio/dds/ad9951.c b/drivers/staging/iio/dds/ad9951.c
index d361d1f125de..3d478e7a48fc 100644
--- a/drivers/staging/iio/dds/ad9951.c
+++ b/drivers/staging/iio/dds/ad9951.c
@@ -14,6 +14,7 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -161,7 +162,6 @@ static struct attribute *ad9951_attributes[] = {
 };
 
 static const struct attribute_group ad9951_attribute_group = {
-	.name = DRV_NAME,
 	.attrs = ad9951_attributes,
 };
 
diff --git a/drivers/staging/iio/gyro/adis16060_core.c b/drivers/staging/iio/gyro/adis16060_core.c
index afa52d1961a9..3f5087329e5b 100644
--- a/drivers/staging/iio/gyro/adis16060_core.c
+++ b/drivers/staging/iio/gyro/adis16060_core.c
@@ -13,12 +13,10 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
-
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "gyro.h"
-#include "../adc/adc.h"
 
 #define ADIS16060_GYRO		0x20 /* Measure Angular Rate (Gyro) */
 #define ADIS16060_TEMP_OUT	0x10 /* Measure Temperature */
@@ -42,11 +40,9 @@ struct adis16060_state {
 
 static struct iio_dev *adis16060_iio_dev;
 
-static int adis16060_spi_write(struct device *dev,
-		u8 val)
+static int adis16060_spi_write(struct iio_dev *indio_dev, u8 val)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16060_state *st = iio_priv(indio_dev);
 
 	mutex_lock(&st->buf_lock);
@@ -57,11 +53,9 @@ static int adis16060_spi_write(struct device *dev,
 	return ret;
 }
 
-static int adis16060_spi_read(struct device *dev,
-		u16 *val)
+static int adis16060_spi_read(struct iio_dev *indio_dev, u16 *val)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16060_state *st = iio_priv(indio_dev);
 
 	mutex_lock(&st->buf_lock);
@@ -82,60 +76,71 @@ static int adis16060_spi_read(struct device *dev,
 	return ret;
 }
 
-static ssize_t adis16060_read(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
+static int adis16060_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val, int *val2,
+			      long mask)
 {
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	u16 val = 0;
-	ssize_t ret;
-
-	/* Take the iio_dev status lock */
-	mutex_lock(&indio_dev->mlock);
+	u16 tval = 0;
+	int ret;
 
-	ret = adis16060_spi_write(dev, this_attr->address);
-	if (ret < 0)
-		goto error_ret;
-	ret = adis16060_spi_read(dev, &val);
-error_ret:
-	mutex_unlock(&indio_dev->mlock);
+	switch (mask) {
+	case 0:
+		/* Take the iio_dev status lock */
+		mutex_lock(&indio_dev->mlock);
+		ret = adis16060_spi_write(indio_dev, chan->address);
+		if (ret < 0) {
+			mutex_unlock(&indio_dev->mlock);
+			return ret;
+		}
+		ret = adis16060_spi_read(indio_dev, &tval);
+		mutex_unlock(&indio_dev->mlock);
+		*val = tval;
+		return IIO_VAL_INT;
+	case (1 << IIO_CHAN_INFO_OFFSET_SEPARATE):
+		*val = -7;
+		*val2 = 461117;
+		return IIO_VAL_INT_PLUS_MICRO;
+	case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
+		*val = 0;
+		*val2 = 34000;
+		return IIO_VAL_INT_PLUS_MICRO;
+	}
 
-	if (ret == 0)
-		return sprintf(buf, "%d\n", val);
-	else
-		return ret;
+	return -EINVAL;
 }
 
-static IIO_DEV_ATTR_GYRO_Z(adis16060_read, ADIS16060_GYRO);
-static IIO_DEVICE_ATTR(temp_raw, S_IRUGO, adis16060_read, NULL,
-		       ADIS16060_TEMP_OUT);
-static IIO_CONST_ATTR_TEMP_SCALE("34"); /* Milli degrees C */
-static IIO_CONST_ATTR_TEMP_OFFSET("-7461.117"); /* Milli degrees C */
-static IIO_DEV_ATTR_IN_RAW(0, adis16060_read, ADIS16060_AIN1);
-static IIO_DEV_ATTR_IN_RAW(1, adis16060_read, ADIS16060_AIN2);
-static IIO_CONST_ATTR(name, "adis16060");
-
-static struct attribute *adis16060_attributes[] = {
-	&iio_dev_attr_gyro_z_raw.dev_attr.attr,
-	&iio_dev_attr_temp_raw.dev_attr.attr,
-	&iio_const_attr_temp_scale.dev_attr.attr,
-	&iio_const_attr_temp_offset.dev_attr.attr,
-	&iio_dev_attr_in0_raw.dev_attr.attr,
-	&iio_dev_attr_in1_raw.dev_attr.attr,
-	&iio_const_attr_name.dev_attr.attr,
-	NULL
-};
-
-static const struct attribute_group adis16060_attribute_group = {
-	.attrs = adis16060_attributes,
-};
-
 static const struct iio_info adis16060_info = {
-	.attrs = &adis16060_attribute_group,
+	.read_raw = &adis16060_read_raw,
 	.driver_module = THIS_MODULE,
 };
 
+static const struct iio_chan_spec adis16060_channels[] = {
+	{
+		.type = IIO_GYRO,
+		.modified = 1,
+		.channel2 = IIO_MOD_Z,
+		.address = ADIS16060_GYRO,
+	}, {
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 0,
+		.address = ADIS16060_AIN1,
+	}, {
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 1,
+		.address = ADIS16060_AIN2,
+	}, {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 0,
+		.info_mask = (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
+		(1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		.address = ADIS16060_TEMP_OUT,
+	}
+};
+
 static int __devinit adis16060_r_probe(struct spi_device *spi)
 {
 	int ret, regdone = 0;
@@ -154,9 +159,12 @@ static int __devinit adis16060_r_probe(struct spi_device *spi)
 	st->us_r = spi;
 	mutex_init(&st->buf_lock);
 
+	indio_dev->name = spi->dev.driver->name;
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adis16060_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adis16060_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adis16060_channels);
 
 	ret = iio_device_register(indio_dev);
 	if (ret)
diff --git a/drivers/staging/iio/gyro/adis16080_core.c b/drivers/staging/iio/gyro/adis16080_core.c
index ad2db4d723df..16ba0e11e443 100644
--- a/drivers/staging/iio/gyro/adis16080_core.c
+++ b/drivers/staging/iio/gyro/adis16080_core.c
@@ -13,11 +13,10 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "gyro.h"
-#include "../adc/adc.h"
 
 #define ADIS16080_DIN_GYRO   (0 << 10) /* Gyroscope output */
 #define ADIS16080_DIN_TEMP   (1 << 10) /* Temperature output */
@@ -44,11 +43,10 @@ struct adis16080_state {
 	u8 buf[2] ____cacheline_aligned;
 };
 
-static int adis16080_spi_write(struct device *dev,
+static int adis16080_spi_write(struct iio_dev *indio_dev,
 		u16 val)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16080_state *st = iio_priv(indio_dev);
 
 	mutex_lock(&st->buf_lock);
@@ -61,11 +59,10 @@ static int adis16080_spi_write(struct device *dev,
 	return ret;
 }
 
-static int adis16080_spi_read(struct device *dev,
-		u16 *val)
+static int adis16080_spi_read(struct iio_dev *indio_dev,
+			      u16 *val)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16080_state *st = iio_priv(indio_dev);
 
 	mutex_lock(&st->buf_lock);
@@ -79,50 +76,62 @@ static int adis16080_spi_read(struct device *dev,
 	return ret;
 }
 
-static ssize_t adis16080_read(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
+static int adis16080_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val,
+			     int *val2,
+			     long mask)
 {
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	u16 val = 0;
-	ssize_t ret;
-
+	int ret = -EINVAL;
+	u16 ut;
 	/* Take the iio_dev status lock */
+
 	mutex_lock(&indio_dev->mlock);
-	ret = adis16080_spi_write(dev,
-				  this_attr->address | ADIS16080_DIN_WRITE);
-	if (ret < 0)
-		goto error_ret;
-	ret =  adis16080_spi_read(dev, &val);
-error_ret:
+	switch (mask) {
+	case 0:
+		ret = adis16080_spi_write(indio_dev,
+					  chan->address |
+					  ADIS16080_DIN_WRITE);
+		if (ret < 0)
+			break;
+		ret = adis16080_spi_read(indio_dev, &ut);
+		if (ret < 0)
+			break;
+		*val = ut;
+		ret = IIO_VAL_INT;
+		break;
+	}
 	mutex_unlock(&indio_dev->mlock);
 
-	if (ret == 0)
-		return sprintf(buf, "%d\n", val);
-	else
-		return ret;
+	return ret;
 }
-static IIO_DEV_ATTR_GYRO_Z(adis16080_read, ADIS16080_DIN_GYRO);
-static IIO_DEVICE_ATTR(temp_raw, S_IRUGO, adis16080_read, NULL,
-		       ADIS16080_DIN_TEMP);
-static IIO_DEV_ATTR_IN_RAW(0, adis16080_read, ADIS16080_DIN_AIN1);
-static IIO_DEV_ATTR_IN_RAW(1, adis16080_read, ADIS16080_DIN_AIN2);
-
-static struct attribute *adis16080_attributes[] = {
-	&iio_dev_attr_gyro_z_raw.dev_attr.attr,
-	&iio_dev_attr_temp_raw.dev_attr.attr,
-	&iio_dev_attr_in0_raw.dev_attr.attr,
-	&iio_dev_attr_in1_raw.dev_attr.attr,
-	NULL
-};
 
-static const struct attribute_group adis16080_attribute_group = {
-	.attrs = adis16080_attributes,
+static const struct iio_chan_spec adis16080_channels[] = {
+	{
+		.type = IIO_GYRO,
+		.modified = 1,
+		.channel2 = IIO_MOD_Z,
+		.address = ADIS16080_DIN_GYRO,
+	}, {
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 0,
+		.address = ADIS16080_DIN_AIN1,
+	}, {
+		.type = IIO_IN,
+		.indexed = 1,
+		.channel = 1,
+		.address = ADIS16080_DIN_AIN2,
+	}, {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 0,
+		.address = ADIS16080_DIN_TEMP,
+	}
 };
 
 static const struct iio_info adis16080_info = {
-	.attrs = &adis16080_attribute_group,
+	.read_raw = &adis16080_read_raw,
 	.driver_module = THIS_MODULE,
 };
 
@@ -147,6 +156,8 @@ static int __devinit adis16080_probe(struct spi_device *spi)
 	mutex_init(&st->buf_lock);
 
 	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;
diff --git a/drivers/staging/iio/gyro/adis16130_core.c b/drivers/staging/iio/gyro/adis16130_core.c
index c80e908d8acf..a9f270e5eb96 100644
--- a/drivers/staging/iio/gyro/adis16130_core.c
+++ b/drivers/staging/iio/gyro/adis16130_core.c
@@ -14,11 +14,10 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "gyro.h"
-#include "../adc/adc.h"
 
 #define ADIS16130_CON         0x0
 #define ADIS16130_CON_RD      (1 << 6)
@@ -41,140 +40,77 @@
 /**
  * struct adis16130_state - device instance specific data
  * @us:			actual spi_device to write data
- * @mode:		24 bits (1) or 16 bits (0)
  * @buf_lock:		mutex to protect tx and rx
  * @buf:		unified tx/rx buffer
  **/
 struct adis16130_state {
 	struct spi_device		*us;
-	u32                             mode;
 	struct mutex			buf_lock;
 	u8				buf[4] ____cacheline_aligned;
 };
 
-static int adis16130_spi_write(struct device *dev, u8 reg_addr,
-		u8 val)
+static int adis16130_spi_read(struct iio_dev *indio_dev, u8 reg_addr, u32 *val)
 {
 	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct adis16130_state *st = iio_priv(indio_dev);
-
-	mutex_lock(&st->buf_lock);
-	st->buf[0] = reg_addr;
-	st->buf[1] = val;
-
-	ret = spi_write(st->us, st->buf, 2);
-	mutex_unlock(&st->buf_lock);
-
-	return ret;
-}
-
-static int adis16130_spi_read(struct device *dev, u8 reg_addr,
-		u32 *val)
-{
-	int ret;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adis16130_state *st = iio_priv(indio_dev);
+	struct spi_message msg;
+	struct spi_transfer xfer = {
+		.tx_buf = st->buf,
+		.rx_buf = st->buf,
+		.len = 4,
+	};
 
 	mutex_lock(&st->buf_lock);
 
 	st->buf[0] = ADIS16130_CON_RD | reg_addr;
-	if (st->mode)
-		ret = spi_read(st->us, st->buf, 4);
-	else
-		ret = spi_read(st->us, st->buf, 3);
-
-	if (ret == 0) {
-		if (st->mode)
-			*val = (st->buf[1] << 16) |
-				(st->buf[2] << 8) |
-				st->buf[3];
-		else
-			*val = (st->buf[1] << 8) | st->buf[2];
-	}
+	st->buf[1] = st->buf[2] = st->buf[3] = 0;
 
+	spi_message_init(&msg);
+	spi_message_add_tail(&xfer, &msg);
+	ret = spi_sync(st->us, &msg);
+	ret = spi_read(st->us, st->buf, 4);
+
+	if (ret == 0)
+		*val = (st->buf[1] << 16) | (st->buf[2] << 8) | st->buf[3];
 	mutex_unlock(&st->buf_lock);
 
 	return ret;
 }
 
-static ssize_t adis16130_val_read(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
+static int adis16130_read_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int *val, int *val2,
+			      long mask)
 {
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	u32 val;
-	ssize_t ret;
+	int ret;
+	u32 temp;
 
 	/* Take the iio_dev status lock */
 	mutex_lock(&indio_dev->mlock);
-	ret =  adis16130_spi_read(dev, this_attr->address, &val);
+	ret =  adis16130_spi_read(indio_dev, chan->address, &temp);
 	mutex_unlock(&indio_dev->mlock);
-
-	if (ret == 0)
-		return sprintf(buf, "%d\n", val);
-	else
+	if (ret)
 		return ret;
+	*val = temp;
+	return IIO_VAL_INT;
 }
 
-static ssize_t adis16130_bitsmode_read(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct adis16130_state *st = iio_priv(indio_dev);
-
-	if (st->mode == 1)
-		return sprintf(buf, "s24\n");
-	else
-		return sprintf(buf, "s16\n");
-}
-
-static ssize_t adis16130_bitsmode_write(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	int ret;
-	u8 val;
-
-	if (sysfs_streq(buf, "s16"))
-		val = 0;
-	else if (sysfs_streq(buf, "s24"))
-		val = 1;
-	else
-		return -EINVAL;
-
-	ret = adis16130_spi_write(dev, ADIS16130_MODE, val);
-
-	return ret ? ret : len;
-}
-static IIO_DEVICE_ATTR(temp_raw, S_IRUGO, adis16130_val_read, NULL,
-		      ADIS16130_TEMPDATA);
-
-static IIO_DEV_ATTR_GYRO_Z(adis16130_val_read, ADIS16130_RATEDATA);
-
-static IIO_DEVICE_ATTR(gyro_z_type, S_IWUSR | S_IRUGO, adis16130_bitsmode_read,
-			adis16130_bitsmode_write,
-			ADIS16130_MODE);
-
-static IIO_CONST_ATTR(gyro_z_type_available, "s16 s24");
-
-static struct attribute *adis16130_attributes[] = {
-	&iio_dev_attr_temp_raw.dev_attr.attr,
-	&iio_dev_attr_gyro_z_raw.dev_attr.attr,
-	&iio_dev_attr_gyro_z_type.dev_attr.attr,
-	&iio_const_attr_gyro_z_type_available.dev_attr.attr,
-	NULL
-};
-
-static const struct attribute_group adis16130_attribute_group = {
-	.attrs = adis16130_attributes,
+static const struct iio_chan_spec adis16130_channels[] = {
+	{
+		.type = IIO_GYRO,
+		.modified = 1,
+		.channel2 = IIO_MOD_Z,
+		.address = ADIS16130_RATEDATA,
+	}, {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 0,
+		.address = ADIS16130_TEMPDATA,
+	}
 };
 
 static const struct iio_info adis16130_info = {
-	.attrs = &adis16130_attribute_group,
+	.read_raw = &adis16130_read_raw,
 	.driver_module = THIS_MODULE,
 };
 
@@ -196,10 +132,11 @@ static int __devinit adis16130_probe(struct spi_device *spi)
 	st->us = spi;
 	mutex_init(&st->buf_lock);
 	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;
-	st->mode = 1;
 
 	ret = iio_device_register(indio_dev);
 	if (ret)
diff --git a/drivers/staging/iio/gyro/adis16260_core.c b/drivers/staging/iio/gyro/adis16260_core.c
index f2d43cfcc493..fcd7819a1246 100644
--- a/drivers/staging/iio/gyro/adis16260_core.c
+++ b/drivers/staging/iio/gyro/adis16260_core.c
@@ -17,12 +17,11 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "../adc/adc.h"
-#include "gyro.h"
 
 #include "adis16260.h"
 
diff --git a/drivers/staging/iio/gyro/adis16260_ring.c b/drivers/staging/iio/gyro/adis16260_ring.c
index a4df8b32251e..10f8a666226b 100644
--- a/drivers/staging/iio/gyro/adis16260_ring.c
+++ b/drivers/staging/iio/gyro/adis16260_ring.c
@@ -1,20 +1,12 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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 "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "../accel/accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16260.h"
 
 /**
@@ -68,7 +60,7 @@ static int adis16260_read_ring_data(struct device *dev, u8 *rx)
 static irqreturn_t adis16260_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16260_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	int i = 0;
diff --git a/drivers/staging/iio/gyro/adis16260_trigger.c b/drivers/staging/iio/gyro/adis16260_trigger.c
index 01094d0e714a..2f2b2160f44d 100644
--- a/drivers/staging/iio/gyro/adis16260_trigger.c
+++ b/drivers/staging/iio/gyro/adis16260_trigger.c
@@ -1,14 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16260.h"
 
@@ -24,6 +18,11 @@ static int adis16260_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16260_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16260_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16260_data_rdy_trigger_set_state,
+};
+
 int adis16260_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -46,9 +45,8 @@ int adis16260_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_trig;
 
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &adis16260_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16260_data_rdy_trigger_set_state;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/gyro/adxrs450_core.c b/drivers/staging/iio/gyro/adxrs450_core.c
index 7502a264770b..670b615839fb 100644
--- a/drivers/staging/iio/gyro/adxrs450_core.c
+++ b/drivers/staging/iio/gyro/adxrs450_core.c
@@ -17,11 +17,10 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
-#include "gyro.h"
-#include "../adc/adc.h"
 
 #include "adxrs450.h"
 
@@ -32,26 +31,12 @@
  * Second register's address is reg_address + 1.
  * @val: somewhere to pass back the value read
  **/
-static int adxrs450_spi_read_reg_16(struct device *dev,
-		u8 reg_address,
-		u16 *val)
+static int adxrs450_spi_read_reg_16(struct iio_dev *indio_dev,
+				    u8 reg_address,
+				    u16 *val)
 {
-	struct spi_message msg;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adxrs450_state *st = iio_priv(indio_dev);
 	int ret;
-	struct spi_transfer xfers[] = {
-		{
-			.tx_buf = st->tx,
-			.bits_per_word = 8,
-			.len = 4,
-			.cs_change = 1,
-		}, {
-			.rx_buf = st->rx,
-			.bits_per_word = 8,
-			.len = 4,
-		},
-	};
 
 	mutex_lock(&st->buf_lock);
 	st->tx[0] = ADXRS450_READ_DATA | (reg_address >> 7);
@@ -62,10 +47,13 @@ static int adxrs450_spi_read_reg_16(struct device *dev,
 	if (!(hweight32(be32_to_cpu(*(u32 *)st->tx)) & 1))
 		st->tx[3]  |= ADXRS450_P;
 
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers[0], &msg);
-	spi_message_add_tail(&xfers[1], &msg);
-	ret = spi_sync(st->us, &msg);
+	ret = spi_write(st->us, st->tx, 4);
+	if (ret) {
+		dev_err(&st->us->dev, "problem while reading 16 bit register 0x%02x\n",
+			reg_address);
+		goto error_ret;
+	}
+	ret = spi_read(st->us, st->rx, 4);
 	if (ret) {
 		dev_err(&st->us->dev, "problem while reading 16 bit register 0x%02x\n",
 				reg_address);
@@ -86,20 +74,12 @@ error_ret:
  * Second register's address is reg_address + 1.
  * @val: value to be written.
  **/
-static int adxrs450_spi_write_reg_16(struct device *dev,
-		u8 reg_address,
-		u16 val)
+static int adxrs450_spi_write_reg_16(struct iio_dev *indio_dev,
+				     u8 reg_address,
+				     u16 val)
 {
-	struct spi_message msg;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adxrs450_state *st = iio_priv(indio_dev);
 	int ret;
-	struct spi_transfer xfers = {
-		.tx_buf = st->tx,
-		.rx_buf = st->rx,
-		.bits_per_word = 8,
-		.len = 4,
-	};
 
 	mutex_lock(&st->buf_lock);
 	st->tx[0] = ADXRS450_WRITE_DATA | reg_address >> 7;
@@ -108,14 +88,12 @@ static int adxrs450_spi_write_reg_16(struct device *dev,
 	st->tx[3] = val << 1;
 
 	if (!(hweight32(be32_to_cpu(*(u32 *)st->tx)) & 1))
-		st->tx[3]  |= ADXRS450_P;
+		st->tx[3] |= ADXRS450_P;
 
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers, &msg);
-	ret = spi_sync(st->us, &msg);
+	ret = spi_write(st->us, st->tx, 4);
 	if (ret)
 		dev_err(&st->us->dev, "problem while writing 16 bit register 0x%02x\n",
-				reg_address);
+			reg_address);
 	msleep(1); /* enforce sequential transfer delay 0.1ms */
 	mutex_unlock(&st->buf_lock);
 	return ret;
@@ -126,24 +104,10 @@ static int adxrs450_spi_write_reg_16(struct device *dev,
  * @dev: device associated with child of actual iio_dev
  * @val: somewhere to pass back the value read
  **/
-static int adxrs450_spi_sensor_data(struct device *dev, s16 *val)
+static int adxrs450_spi_sensor_data(struct iio_dev *indio_dev, s16 *val)
 {
-	struct spi_message msg;
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct adxrs450_state *st = iio_priv(indio_dev);
 	int ret;
-	struct spi_transfer xfers[] = {
-		{
-			.tx_buf = st->tx,
-			.bits_per_word = 8,
-			.len = 4,
-			.cs_change = 1,
-		}, {
-			.rx_buf = st->rx,
-			.bits_per_word = 8,
-			.len = 4,
-		},
-	};
 
 	mutex_lock(&st->buf_lock);
 	st->tx[0] = ADXRS450_SENSOR_DATA;
@@ -151,10 +115,13 @@ static int adxrs450_spi_sensor_data(struct device *dev, s16 *val)
 	st->tx[2] = 0;
 	st->tx[3] = 0;
 
-	spi_message_init(&msg);
-	spi_message_add_tail(&xfers[0], &msg);
-	spi_message_add_tail(&xfers[1], &msg);
-	ret = spi_sync(st->us, &msg);
+	ret = spi_write(st->us, st->tx, 4);
+	if (ret) {
+		dev_err(&st->us->dev, "Problem while reading sensor data\n");
+		goto error_ret;
+	}
+
+	ret = spi_read(st->us, st->rx, 4);
 	if (ret) {
 		dev_err(&st->us->dev, "Problem while reading sensor data\n");
 		goto error_ret;
@@ -206,73 +173,12 @@ error_ret:
 	return ret;
 }
 
-static ssize_t adxrs450_read_temp(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	int ret;
-	u16 t;
-	ret = adxrs450_spi_read_reg_16(dev,
-			ADXRS450_TEMP1,
-			&t);
-	if (ret)
-		return ret;
-	return sprintf(buf, "%d\n", t >> 7);
-}
-
-static ssize_t adxrs450_read_quad(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	int ret;
-	s16 t;
-	ret = adxrs450_spi_read_reg_16(dev,
-			ADXRS450_QUAD1,
-			&t);
-	if (ret)
-		return ret;
-	return sprintf(buf, "%d\n", t);
-}
-
-static ssize_t adxrs450_write_dnc(struct device *dev,
-		struct device_attribute *attr,
-		const char *buf,
-		size_t len)
-{
-	int ret;
-	long val;
-
-	ret = strict_strtol(buf, 10, &val);
-	if (ret)
-		goto error_ret;
-	ret = adxrs450_spi_write_reg_16(dev,
-			ADXRS450_DNC1,
-			val & 0x3FF);
-error_ret:
-	return ret ? ret : len;
-}
-
-static ssize_t adxrs450_read_sensor_data(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
-{
-	int ret;
-	s16 t;
-
-	ret = adxrs450_spi_sensor_data(dev, &t);
-	if (ret)
-		return ret;
-
-	return sprintf(buf, "%d\n", t);
-}
-
 /* Recommended Startup Sequence by spec */
 static int adxrs450_initial_setup(struct iio_dev *indio_dev)
 {
 	u32 t;
 	u16 data;
 	int ret;
-	struct device *dev = &indio_dev->dev;
 	struct adxrs450_state *st = iio_priv(indio_dev);
 
 	msleep(ADXRS450_STARTUP_DELAY*2);
@@ -305,23 +211,23 @@ static int adxrs450_initial_setup(struct iio_dev *indio_dev)
 		return -EIO;
 
 	}
-	ret = adxrs450_spi_read_reg_16(dev, ADXRS450_FAULT1, &data);
+	ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_FAULT1, &data);
 	if (ret)
 		return ret;
 	if (data & 0x0fff) {
 		dev_err(&st->us->dev, "The device is not in normal status!\n");
 		return -EINVAL;
 	}
-	ret = adxrs450_spi_read_reg_16(dev, ADXRS450_PID1, &data);
+	ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_PID1, &data);
 	if (ret)
 		return ret;
 	dev_info(&st->us->dev, "The Part ID is 0x%x\n", data);
 
-	ret = adxrs450_spi_read_reg_16(dev, ADXRS450_SNL, &data);
+	ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_SNL, &data);
 	if (ret)
 		return ret;
 	t = data;
-	ret = adxrs450_spi_read_reg_16(dev, ADXRS450_SNH, &data);
+	ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_SNH, &data);
 	if (ret)
 		return ret;
 	t |= data << 16;
@@ -330,29 +236,91 @@ static int adxrs450_initial_setup(struct iio_dev *indio_dev)
 	return 0;
 }
 
-static IIO_DEV_ATTR_GYRO_Z(adxrs450_read_sensor_data, 0);
-static IIO_DEV_ATTR_TEMP_RAW(adxrs450_read_temp);
-static IIO_DEV_ATTR_GYRO_Z_QUADRATURE_CORRECTION(adxrs450_read_quad, 0);
-static IIO_DEV_ATTR_GYRO_Z_CALIBBIAS(S_IWUSR,
-		NULL, adxrs450_write_dnc, 0);
-static IIO_CONST_ATTR(name, "adxrs450");
-
-static struct attribute *adxrs450_attributes[] = {
-	&iio_dev_attr_gyro_z_raw.dev_attr.attr,
-	&iio_dev_attr_temp_raw.dev_attr.attr,
-	&iio_dev_attr_gyro_z_quadrature_correction_raw.dev_attr.attr,
-	&iio_dev_attr_gyro_z_calibbias.dev_attr.attr,
-	&iio_const_attr_name.dev_attr.attr,
-	NULL
-};
+static int adxrs450_write_raw(struct iio_dev *indio_dev,
+			      struct iio_chan_spec const *chan,
+			      int val,
+			      int val2,
+			      long mask)
+{
+	int ret;
+	switch (mask) {
+	case (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE):
+		ret = adxrs450_spi_write_reg_16(indio_dev,
+						ADXRS450_DNC1,
+						val & 0x3FF);
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+	return ret;
+}
 
-static const struct attribute_group adxrs450_attribute_group = {
-	.attrs = adxrs450_attributes,
+static int adxrs450_read_raw(struct iio_dev *indio_dev,
+			     struct iio_chan_spec const *chan,
+			     int *val,
+			     int *val2,
+			     long mask)
+{
+	int ret;
+	s16 t;
+	u16 ut;
+	switch (mask) {
+	case 0:
+		switch (chan->type) {
+		case IIO_GYRO:
+			ret = adxrs450_spi_sensor_data(indio_dev, &t);
+			if (ret)
+				break;
+			*val = t;
+			ret = IIO_VAL_INT;
+			break;
+		case IIO_TEMP:
+			ret = adxrs450_spi_read_reg_16(indio_dev,
+						       ADXRS450_TEMP1, &ut);
+			if (ret)
+				break;
+			*val = ut;
+			ret = IIO_VAL_INT;
+			break;
+		default:
+			ret = -EINVAL;
+			break;
+		}
+		break;
+	case (1 << IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE):
+		ret = adxrs450_spi_read_reg_16(indio_dev, ADXRS450_QUAD1, &t);
+		if (ret)
+			break;
+		*val = t;
+		ret = IIO_VAL_INT;
+		break;
+	default:
+		ret = -EINVAL;
+		break;
+	}
+
+	return ret;
+}
+
+static const struct iio_chan_spec adxrs450_channels[] = {
+	{
+		.type = IIO_GYRO,
+		.modified = 1,
+		.channel2 = IIO_MOD_Z,
+		.info_mask = (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		(1 << IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE)
+	}, {
+		.type = IIO_TEMP,
+		.indexed = 1,
+		.channel = 0,
+	}
 };
 
 static const struct iio_info adxrs450_info = {
-	.attrs = &adxrs450_attribute_group,
 	.driver_module = THIS_MODULE,
+	.read_raw = &adxrs450_read_raw,
+	.write_raw = &adxrs450_write_raw,
 };
 
 static int __devinit adxrs450_probe(struct spi_device *spi)
@@ -376,6 +344,9 @@ static int __devinit adxrs450_probe(struct spi_device *spi)
 	indio_dev->dev.parent = &spi->dev;
 	indio_dev->info = &adxrs450_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = adxrs450_channels;
+	indio_dev->num_channels = ARRAY_SIZE(adxrs450_channels);
+	indio_dev->name = spi->dev.driver->name;
 
 	ret = iio_device_register(indio_dev);
 	if (ret)
diff --git a/drivers/staging/iio/gyro/gyro.h b/drivers/staging/iio/gyro/gyro.h
deleted file mode 100644
index b5495613407b..000000000000
--- a/drivers/staging/iio/gyro/gyro.h
+++ /dev/null
@@ -1,85 +0,0 @@
-
-#include "../sysfs.h"
-
-/* Gyroscope types of attribute */
-
-#define IIO_CONST_ATTR_GYRO_OFFSET(_string)	\
-	IIO_CONST_ATTR(gyro_offset, _string)
-
-#define IIO_DEV_ATTR_GYRO_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(gyro_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_X_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(gyro_x_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Y_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(gyro_y_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Z_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(gyro_z_offset, _mode, _show, _store, _addr)
-
-#define IIO_CONST_ATTR_GYRO_SCALE(_string)		\
-	IIO_CONST_ATTR(gyro_scale, _string)
-
-#define IIO_DEV_ATTR_GYRO_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_scale, S_IRUGO, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_X_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_x_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Y_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_y_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Z_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_z_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_calibbias, S_IRUGO, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_X_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_x_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Y_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_y_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Z_CALIBBIAS(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_z_calibbias, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_calibscale, S_IRUGO, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_X_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_x_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Y_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_y_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Z_CALIBSCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(gyro_z_calibscale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Z_QUADRATURE_CORRECTION(_show, _addr)		\
-	IIO_DEVICE_ATTR(gyro_z_quadrature_correction_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_GYRO(_show, _addr)			\
-	IIO_DEVICE_ATTR(gyro_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_GYRO_X(_show, _addr)			\
-	IIO_DEVICE_ATTR(gyro_x_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Y(_show, _addr)			\
-	IIO_DEVICE_ATTR(gyro_y_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_GYRO_Z(_show, _addr)			\
-	IIO_DEVICE_ATTR(gyro_z_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ANGL(_show, _addr)                         \
-	IIO_DEVICE_ATTR(angl_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ANGL_X(_show, _addr)				\
-	IIO_DEVICE_ATTR(angl_x_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ANGL_Y(_show, _addr)				\
-	IIO_DEVICE_ATTR(angl_y_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_ANGL_Z(_show, _addr)				\
-	IIO_DEVICE_ATTR(angl_z_raw, S_IRUGO, _show, NULL, _addr)
diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index 7a6ce4d0fb7b..753f769736ef 100644
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -1,3 +1,4 @@
+
 /* The industrial I/O core
  *
  * Copyright (c) 2008 Jonathan Cameron
@@ -22,11 +23,6 @@
  * Currently assumes nano seconds.
  */
 
-/* Event interface flags */
-#define IIO_BUSY_BIT_POS 1
-
-/* naughty temporary hack to match these against the event version
-   - need to flattern these together */
 enum iio_chan_type {
 	/* real channel types */
 	IIO_IN,
@@ -75,6 +71,8 @@ enum iio_chan_info_enum {
 	IIO_CHAN_INFO_PEAK_SEPARATE,
 	IIO_CHAN_INFO_PEAK_SCALE_SHARED,
 	IIO_CHAN_INFO_PEAK_SCALE_SEPARATE,
+	IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SHARED,
+	IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE,
 };
 
 /**
@@ -121,26 +119,14 @@ struct iio_chan_spec {
 		u8	storagebits;
 		u8	shift;
 	} scan_type;
-	const long		info_mask;
-	const long		event_mask;
-	const char		*extend_name;
+	long			info_mask;
+	long			event_mask;
+	char			*extend_name;
 	unsigned		processed_val:1;
 	unsigned		modified:1;
 	unsigned		indexed:1;
 };
-/* Meant for internal use only */
-void __iio_device_attr_deinit(struct device_attribute *dev_attr);
-int __iio_device_attr_init(struct device_attribute *dev_attr,
-			   const char *postfix,
-			   struct iio_chan_spec const *chan,
-			   ssize_t (*readfunc)(struct device *dev,
-					       struct device_attribute *attr,
-					       char *buf),
-			   ssize_t (*writefunc)(struct device *dev,
-						struct device_attribute *attr,
-						const char *buf,
-						size_t len),
-			   bool generic);
+
 #define IIO_ST(si, rb, sb, sh)						\
 	{ .sign = si, .realbits = rb, .storagebits = sb, .shift = sh }
 
@@ -163,20 +149,6 @@ int __iio_device_attr_init(struct device_attribute *dev_attr,
 	{ .type = IIO_TIMESTAMP, .channel = -1,				\
 			.scan_index = _si, .scan_type = IIO_ST('s', 64, 64, 0) }
 
-int __iio_add_chan_devattr(const char *postfix,
-			   const char *group,
-			   struct iio_chan_spec const *chan,
-			   ssize_t (*func)(struct device *dev,
-					   struct device_attribute *attr,
-					   char *buf),
-			   ssize_t (*writefunc)(struct device *dev,
-						struct device_attribute *attr,
-						const char *buf,
-						size_t len),
-			   int mask,
-			   bool generic,
-			   struct device *dev,
-			   struct list_head *attr_list);
 /**
  * iio_get_time_ns() - utility function to get a time stamp for events etc
  **/
@@ -276,7 +248,6 @@ struct iio_info {
 /**
  * struct iio_dev - industrial I/O device
  * @id:			[INTERN] used to identify device internally
- * @dev_data:		[DRIVER] device specific data
  * @modes:		[DRIVER] operating modes supported by device
  * @currentmode:	[DRIVER] current operating mode
  * @dev:		[DRIVER] device structure, should be assigned a parent
@@ -296,7 +267,7 @@ struct iio_info {
  **/
 struct iio_dev {
 	int				id;
-	void				*dev_data;
+
 	int				modes;
 	int				currentmode;
 	struct device			dev;
@@ -342,13 +313,6 @@ int iio_push_event(struct iio_dev *dev_info,
 		  int ev_code,
 		  s64 timestamp);
 
-/* Used to distinguish between bipolar and unipolar scan elemenents.
- * Whilst this may seem obvious, we may well want to change the representation
- * in the future!*/
-#define IIO_SIGNED(a) -(a)
-#define IIO_UNSIGNED(a) (a)
-
-extern dev_t iio_devt;
 extern struct bus_type iio_bus_type;
 
 /**
@@ -361,25 +325,6 @@ static inline void iio_put_device(struct iio_dev *dev)
 		put_device(&dev->dev);
 };
 
-/**
- * to_iio_dev() - get iio_dev for which we have the struct device
- * @d: the struct device
- **/
-static inline struct iio_dev *to_iio_dev(struct device *d)
-{
-	return container_of(d, struct iio_dev, dev);
-};
-
-/**
- * iio_dev_get_devdata() - helper function gets device specific data
- * @d: the iio_dev associated with the device
- **/
-static inline void *iio_dev_get_devdata(struct iio_dev *d)
-{
-	return d->dev_data;
-}
-
-
 /* Can we make this smaller? */
 #define IIO_ALIGN L1_CACHE_BYTES
 /**
@@ -406,22 +351,6 @@ static inline struct iio_dev *iio_priv_to_dev(void *priv)
 void iio_free_device(struct iio_dev *dev);
 
 /**
- * iio_put() - internal module reference count reduce
- **/
-void iio_put(void);
-
-/**
- * iio_get() - internal module reference count increase
- **/
-void iio_get(void);
-
-/**
- * iio_device_get_chrdev_minor() - get an unused minor number
- **/
-int iio_device_get_chrdev_minor(void);
-void iio_device_free_chrdev_minor(int val);
-
-/**
  * iio_ring_enabled() - helper function to test if any form of ring is enabled
  * @dev_info:		IIO device info structure for device
  **/
@@ -432,8 +361,4 @@ static inline bool iio_ring_enabled(struct iio_dev *dev_info)
 		   | INDIO_RING_HARDWARE_BUFFER);
 };
 
-struct ida;
-
-int iio_get_new_ida_val(struct ida *this_ida);
-void iio_free_ida_val(struct ida *this_ida, int id);
 #endif /* _INDUSTRIAL_IO_H_ */
diff --git a/drivers/staging/iio/iio_core.h b/drivers/staging/iio/iio_core.h
new file mode 100644
index 000000000000..00e894d50e74
--- /dev/null
+++ b/drivers/staging/iio/iio_core.h
@@ -0,0 +1,48 @@
+/* The industrial I/O core function defs.
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ *
+ * These definitions are meant for use only within the IIO core, not indvidual
+ * drivers.
+ */
+
+/**
+ * iio_device_get_chrdev_minor() - get an unused minor number
+ **/
+int iio_device_get_chrdev_minor(void);
+void iio_device_free_chrdev_minor(int val);
+
+
+/**
+ * iio_put() - internal module reference count reduce
+ **/
+void iio_put(void);
+
+/**
+ * iio_get() - internal module reference count increase
+ **/
+void iio_get(void);
+
+extern dev_t iio_devt;
+
+int __iio_add_chan_devattr(const char *postfix,
+			   const char *group,
+			   struct iio_chan_spec const *chan,
+			   ssize_t (*func)(struct device *dev,
+					   struct device_attribute *attr,
+					   char *buf),
+			   ssize_t (*writefunc)(struct device *dev,
+						struct device_attribute *attr,
+						const char *buf,
+						size_t len),
+			   int mask,
+			   bool generic,
+			   struct device *dev,
+			   struct list_head *attr_list);
+
+/* Event interface flags */
+#define IIO_BUSY_BIT_POS 1
diff --git a/drivers/staging/iio/iio_core_trigger.h b/drivers/staging/iio/iio_core_trigger.h
new file mode 100644
index 000000000000..3e5195a82bca
--- /dev/null
+++ b/drivers/staging/iio/iio_core_trigger.h
@@ -0,0 +1,46 @@
+
+/* The industrial I/O core, trigger consumer handling functions
+ *
+ * Copyright (c) 2008 Jonathan Cameron
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 as published by
+ * the Free Software Foundation.
+ */
+
+#ifdef CONFIG_IIO_TRIGGER
+/**
+ * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
+ * @dev_info: iio_dev associated with the device that will consume the trigger
+ **/
+int iio_device_register_trigger_consumer(struct iio_dev *dev_info);
+
+/**
+ * iio_device_unregister_trigger_consumer() - reverse the registration process
+ * @dev_info: iio_dev associated with the device that consumed the trigger
+ **/
+void iio_device_unregister_trigger_consumer(struct iio_dev *dev_info);
+
+#else
+
+/**
+ * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
+ * @dev_info: iio_dev associated with the device that will consume the trigger
+ **/
+static int iio_device_register_trigger_consumer(struct iio_dev *dev_info)
+{
+	return 0;
+};
+
+/**
+ * iio_device_unregister_trigger_consumer() - reverse the registration process
+ * @dev_info: iio_dev associated with the device that consumed the trigger
+ **/
+static void iio_device_unregister_trigger_consumer(struct iio_dev *dev_info)
+{
+};
+
+#endif /* CONFIG_TRIGGER_CONSUMER */
+
+
+
diff --git a/drivers/staging/iio/impedance-analyzer/Kconfig b/drivers/staging/iio/impedance-analyzer/Kconfig
new file mode 100644
index 000000000000..9e91a9bc8bfe
--- /dev/null
+++ b/drivers/staging/iio/impedance-analyzer/Kconfig
@@ -0,0 +1,16 @@
+#
+# Impedance Converter, Network Analyzer drivers
+#
+comment "Network Analyzer, Impedance Converters"
+
+config AD5933
+	tristate "Analog Devices AD5933, AD5934 driver"
+	depends on I2C
+	select IIO_RING_BUFFER
+	select IIO_SW_RING
+	help
+	  Say yes here to build support for Analog Devices Impedance Converter,
+	  Network Analyzer, AD5933/4, provides direct access via sysfs.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called ad5933.
diff --git a/drivers/staging/iio/impedance-analyzer/Makefile b/drivers/staging/iio/impedance-analyzer/Makefile
new file mode 100644
index 000000000000..7604d786583e
--- /dev/null
+++ b/drivers/staging/iio/impedance-analyzer/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for Impedance Converter, Network Analyzer drivers
+#
+
+obj-$(CONFIG_AD5933) += ad5933.o
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.c b/drivers/staging/iio/impedance-analyzer/ad5933.c
new file mode 100644
index 000000000000..acc0e69cb588
--- /dev/null
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.c
@@ -0,0 +1,818 @@
+/*
+ * AD5933 AD5934 Impedance Converter, Network Analyzer
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#include <linux/interrupt.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/sysfs.h>
+#include <linux/i2c.h>
+#include <linux/regulator/consumer.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+#include <linux/err.h>
+#include <linux/delay.h>
+#include <asm/div64.h>
+
+#include "../iio.h"
+#include "../sysfs.h"
+#include "../ring_generic.h"
+#include "../ring_sw.h"
+
+#include "ad5933.h"
+
+/* AD5933/AD5934 Registers */
+#define AD5933_REG_CONTROL_HB		0x80	/* R/W, 2 bytes */
+#define AD5933_REG_CONTROL_LB		0x81	/* R/W, 2 bytes */
+#define AD5933_REG_FREQ_START		0x82	/* R/W, 3 bytes */
+#define AD5933_REG_FREQ_INC		0x85	/* R/W, 3 bytes */
+#define AD5933_REG_INC_NUM		0x88	/* R/W, 2 bytes, 9 bit */
+#define AD5933_REG_SETTLING_CYCLES	0x8A	/* R/W, 2 bytes */
+#define AD5933_REG_STATUS		0x8F	/* R, 1 byte */
+#define AD5933_REG_TEMP_DATA		0x92	/* R, 2 bytes*/
+#define AD5933_REG_REAL_DATA		0x94	/* R, 2 bytes*/
+#define AD5933_REG_IMAG_DATA		0x96	/* R, 2 bytes*/
+
+/* AD5933_REG_CONTROL_HB Bits */
+#define AD5933_CTRL_INIT_START_FREQ	(0x1 << 4)
+#define AD5933_CTRL_START_SWEEP		(0x2 << 4)
+#define AD5933_CTRL_INC_FREQ		(0x3 << 4)
+#define AD5933_CTRL_REPEAT_FREQ		(0x4 << 4)
+#define AD5933_CTRL_MEASURE_TEMP	(0x9 << 4)
+#define AD5933_CTRL_POWER_DOWN		(0xA << 4)
+#define AD5933_CTRL_STANDBY		(0xB << 4)
+
+#define AD5933_CTRL_RANGE_2000mVpp	(0x0 << 1)
+#define AD5933_CTRL_RANGE_200mVpp	(0x1 << 1)
+#define AD5933_CTRL_RANGE_400mVpp	(0x2 << 1)
+#define AD5933_CTRL_RANGE_1000mVpp	(0x3 << 1)
+#define AD5933_CTRL_RANGE(x)		((x) << 1)
+
+#define AD5933_CTRL_PGA_GAIN_1		(0x1 << 0)
+#define AD5933_CTRL_PGA_GAIN_5		(0x0 << 0)
+
+/* AD5933_REG_CONTROL_LB Bits */
+#define AD5933_CTRL_RESET		(0x1 << 4)
+#define AD5933_CTRL_INT_SYSCLK		(0x0 << 3)
+#define AD5933_CTRL_EXT_SYSCLK		(0x1 << 3)
+
+/* AD5933_REG_STATUS Bits */
+#define AD5933_STAT_TEMP_VALID		(0x1 << 0)
+#define AD5933_STAT_DATA_VALID		(0x1 << 1)
+#define AD5933_STAT_SWEEP_DONE		(0x1 << 2)
+
+/* I2C Block Commands */
+#define AD5933_I2C_BLOCK_WRITE		0xA0
+#define AD5933_I2C_BLOCK_READ		0xA1
+#define AD5933_I2C_ADDR_POINTER		0xB0
+
+/* Device Specs */
+#define AD5933_INT_OSC_FREQ_Hz		16776000
+#define AD5933_MAX_OUTPUT_FREQ_Hz	100000
+#define AD5933_MAX_RETRIES		100
+
+#define AD5933_OUT_RANGE		1
+#define AD5933_OUT_RANGE_AVAIL		2
+#define AD5933_OUT_SETTLING_CYCLES	3
+#define AD5933_IN_PGA_GAIN		4
+#define AD5933_IN_PGA_GAIN_AVAIL	5
+#define AD5933_FREQ_POINTS		6
+
+#define AD5933_POLL_TIME_ms		10
+#define AD5933_INIT_EXCITATION_TIME_ms	100
+
+struct ad5933_state {
+	struct i2c_client		*client;
+	struct regulator		*reg;
+	struct ad5933_platform_data	*pdata;
+	struct delayed_work		work;
+	unsigned long			mclk_hz;
+	unsigned char			ctrl_hb;
+	unsigned char			ctrl_lb;
+	unsigned			range_avail[4];
+	unsigned short			vref_mv;
+	unsigned short			settling_cycles;
+	unsigned short			freq_points;
+	unsigned			freq_start;
+	unsigned			freq_inc;
+	unsigned			state;
+	unsigned			poll_time_jiffies;
+};
+
+static struct ad5933_platform_data ad5933_default_pdata  = {
+	.vref_mv = 3300,
+};
+
+static struct iio_chan_spec ad5933_channels[] = {
+	IIO_CHAN(IIO_TEMP, 0, 1, 1, NULL, 0, 0, 0,
+		 0, AD5933_REG_TEMP_DATA, IIO_ST('s', 14, 16, 0), 0),
+	/* Ring Channels */
+	IIO_CHAN(IIO_IN, 0, 1, 0, "real_raw", 0, 0,
+		 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		 AD5933_REG_REAL_DATA, 0, IIO_ST('s', 16, 16, 0), 0),
+	IIO_CHAN(IIO_IN, 0, 1, 0, "imag_raw", 0, 0,
+		 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		 AD5933_REG_IMAG_DATA, 1, IIO_ST('s', 16, 16, 0), 0),
+};
+
+static int ad5933_i2c_write(struct i2c_client *client,
+			      u8 reg, u8 len, u8 *data)
+{
+	int ret;
+
+	while (len--) {
+		ret = i2c_smbus_write_byte_data(client, reg++, *data++);
+		if (ret < 0) {
+			dev_err(&client->dev, "I2C write error\n");
+			return ret;
+		}
+	}
+	return 0;
+}
+
+static int ad5933_i2c_read(struct i2c_client *client,
+			      u8 reg, u8 len, u8 *data)
+{
+	int ret;
+
+	while (len--) {
+		ret = i2c_smbus_read_byte_data(client, reg++);
+		if (ret < 0) {
+			dev_err(&client->dev, "I2C read error\n");
+			return ret;
+		}
+		*data++ = ret;
+	}
+	return 0;
+}
+
+static int ad5933_cmd(struct ad5933_state *st, unsigned char cmd)
+{
+	unsigned char dat = st->ctrl_hb | cmd;
+
+	return ad5933_i2c_write(st->client,
+			AD5933_REG_CONTROL_HB, 1, &dat);
+}
+
+static int ad5933_reset(struct ad5933_state *st)
+{
+	unsigned char dat = st->ctrl_lb | AD5933_CTRL_RESET;
+	return ad5933_i2c_write(st->client,
+			AD5933_REG_CONTROL_LB, 1, &dat);
+}
+
+static int ad5933_wait_busy(struct ad5933_state *st, unsigned char event)
+{
+	unsigned char val, timeout = AD5933_MAX_RETRIES;
+	int ret;
+
+	while (timeout--) {
+		ret =  ad5933_i2c_read(st->client, AD5933_REG_STATUS, 1, &val);
+		if (ret < 0)
+			return ret;
+		if (val & event)
+			return val;
+		cpu_relax();
+		mdelay(1);
+	}
+
+	return -EAGAIN;
+}
+
+static int ad5933_set_freq(struct ad5933_state *st,
+			   unsigned reg, unsigned long freq)
+{
+	unsigned long long freqreg;
+	union {
+		u32 d32;
+		u8 d8[4];
+	} dat;
+
+	freqreg = (u64) freq * (u64) (1 << 27);
+	do_div(freqreg, st->mclk_hz / 4);
+
+	switch (reg) {
+	case AD5933_REG_FREQ_START:
+		st->freq_start = freq;
+		break;
+	case AD5933_REG_FREQ_INC:
+		st->freq_inc = freq;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	dat.d32 = cpu_to_be32(freqreg);
+	return ad5933_i2c_write(st->client, reg, 3, &dat.d8[1]);
+}
+
+static int ad5933_setup(struct ad5933_state *st)
+{
+	unsigned short dat;
+	int ret;
+
+	ret = ad5933_reset(st);
+	if (ret < 0)
+		return ret;
+
+	ret = ad5933_set_freq(st, AD5933_REG_FREQ_START, 10000);
+	if (ret < 0)
+		return ret;
+
+	ret = ad5933_set_freq(st, AD5933_REG_FREQ_INC, 200);
+	if (ret < 0)
+		return ret;
+
+	st->settling_cycles = 10;
+	dat = cpu_to_be16(st->settling_cycles);
+
+	ret = ad5933_i2c_write(st->client,
+			AD5933_REG_SETTLING_CYCLES, 2, (u8 *)&dat);
+	if (ret < 0)
+		return ret;
+
+	st->freq_points = 100;
+	dat = cpu_to_be16(st->freq_points);
+
+	return ad5933_i2c_write(st->client, AD5933_REG_INC_NUM, 2, (u8 *)&dat);
+}
+
+static void ad5933_calc_out_ranges(struct ad5933_state *st)
+{
+	int i;
+	unsigned normalized_3v3[4] = {1980, 198, 383, 970};
+
+	for (i = 0; i < 4; i++)
+		st->range_avail[i] = normalized_3v3[i] * st->vref_mv / 3300;
+
+}
+
+/*
+ * handles: AD5933_REG_FREQ_START and AD5933_REG_FREQ_INC
+ */
+
+static ssize_t ad5933_show_frequency(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad5933_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	int ret;
+	unsigned long long freqreg;
+	union {
+		u32 d32;
+		u8 d8[4];
+	} dat;
+
+	mutex_lock(&dev_info->mlock);
+	ret = ad5933_i2c_read(st->client, this_attr->address, 3, &dat.d8[1]);
+	mutex_unlock(&dev_info->mlock);
+	if (ret < 0)
+		return ret;
+
+	freqreg = be32_to_cpu(dat.d32) & 0xFFFFFF;
+
+	freqreg = (u64) freqreg * (u64) (st->mclk_hz / 4);
+	do_div(freqreg, 1 << 27);
+
+	return sprintf(buf, "%d\n", (int) freqreg);
+}
+
+static ssize_t ad5933_store_frequency(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad5933_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	long val;
+	int ret;
+
+	ret = strict_strtoul(buf, 10, &val);
+	if (ret)
+		return ret;
+
+	if (val > AD5933_MAX_OUTPUT_FREQ_Hz)
+		return -EINVAL;
+
+	mutex_lock(&dev_info->mlock);
+	ret = ad5933_set_freq(st, this_attr->address, val);
+	mutex_unlock(&dev_info->mlock);
+
+	return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(out0_freq_start, S_IRUGO | S_IWUSR,
+			ad5933_show_frequency,
+			ad5933_store_frequency,
+			AD5933_REG_FREQ_START);
+
+static IIO_DEVICE_ATTR(out0_freq_increment, S_IRUGO | S_IWUSR,
+			ad5933_show_frequency,
+			ad5933_store_frequency,
+			AD5933_REG_FREQ_INC);
+
+static ssize_t ad5933_show(struct device *dev,
+					struct device_attribute *attr,
+					char *buf)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad5933_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	int ret = 0, len = 0;
+
+	mutex_lock(&dev_info->mlock);
+	switch (this_attr->address) {
+	case AD5933_OUT_RANGE:
+		len = sprintf(buf, "%d\n",
+			      st->range_avail[(st->ctrl_hb >> 1) & 0x3]);
+		break;
+	case AD5933_OUT_RANGE_AVAIL:
+		len = sprintf(buf, "%d %d %d %d\n", st->range_avail[0],
+			      st->range_avail[3], st->range_avail[2],
+			      st->range_avail[1]);
+		break;
+	case AD5933_OUT_SETTLING_CYCLES:
+		len = sprintf(buf, "%d\n", st->settling_cycles);
+		break;
+	case AD5933_IN_PGA_GAIN:
+		len = sprintf(buf, "%s\n",
+			      (st->ctrl_hb & AD5933_CTRL_PGA_GAIN_1) ?
+			      "1" : "0.2");
+		break;
+	case AD5933_IN_PGA_GAIN_AVAIL:
+		len = sprintf(buf, "1 0.2\n");
+		break;
+	case AD5933_FREQ_POINTS:
+		len = sprintf(buf, "%d\n", st->freq_points);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	mutex_unlock(&dev_info->mlock);
+	return ret ? ret : len;
+}
+
+static ssize_t ad5933_store(struct device *dev,
+					 struct device_attribute *attr,
+					 const char *buf,
+					 size_t len)
+{
+	struct iio_dev *dev_info = dev_get_drvdata(dev);
+	struct ad5933_state *st = iio_priv(dev_info);
+	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
+	long val;
+	int i, ret = 0;
+	unsigned short dat;
+
+	if (this_attr->address != AD5933_IN_PGA_GAIN) {
+		ret = strict_strtol(buf, 10, &val);
+		if (ret)
+			return ret;
+	}
+
+	mutex_lock(&dev_info->mlock);
+	switch (this_attr->address) {
+	case AD5933_OUT_RANGE:
+		for (i = 0; i < 4; i++)
+			if (val == st->range_avail[i]) {
+				st->ctrl_hb &= ~AD5933_CTRL_RANGE(0x3);
+				st->ctrl_hb |= AD5933_CTRL_RANGE(i);
+				ret = ad5933_cmd(st, 0);
+				break;
+			}
+		ret = -EINVAL;
+		break;
+	case AD5933_IN_PGA_GAIN:
+		if (sysfs_streq(buf, "1")) {
+			st->ctrl_hb |= AD5933_CTRL_PGA_GAIN_1;
+		} else if (sysfs_streq(buf, "0.2")) {
+			st->ctrl_hb &= ~AD5933_CTRL_PGA_GAIN_1;
+		} else {
+			ret = -EINVAL;
+			break;
+		}
+		ret = ad5933_cmd(st, 0);
+		break;
+	case AD5933_OUT_SETTLING_CYCLES:
+		val = clamp(val, 0L, 0x7FFL);
+		st->settling_cycles = val;
+
+		/* 2x, 4x handling, see datasheet */
+		if (val > 511)
+			val = (val >> 1) | (1 << 9);
+		else if (val > 1022)
+			val = (val >> 2) | (3 << 9);
+
+		dat = cpu_to_be16(val);
+		ret = ad5933_i2c_write(st->client,
+				AD5933_REG_SETTLING_CYCLES, 2, (u8 *)&dat);
+		break;
+	case AD5933_FREQ_POINTS:
+		val = clamp(val, 0L, 511L);
+		st->freq_points = val;
+
+		dat = cpu_to_be16(val);
+		ret = ad5933_i2c_write(st->client, AD5933_REG_INC_NUM, 2,
+				       (u8 *)&dat);
+		break;
+	default:
+		ret = -EINVAL;
+	}
+
+	mutex_unlock(&dev_info->mlock);
+	return ret ? ret : len;
+}
+
+static IIO_DEVICE_ATTR(out0_scale, S_IRUGO | S_IWUSR,
+			ad5933_show,
+			ad5933_store,
+			AD5933_OUT_RANGE);
+
+static IIO_DEVICE_ATTR(out0_scale_available, S_IRUGO,
+			ad5933_show,
+			NULL,
+			AD5933_OUT_RANGE_AVAIL);
+
+static IIO_DEVICE_ATTR(in0_scale, S_IRUGO | S_IWUSR,
+			ad5933_show,
+			ad5933_store,
+			AD5933_IN_PGA_GAIN);
+
+static IIO_DEVICE_ATTR(in0_scale_available, S_IRUGO,
+			ad5933_show,
+			NULL,
+			AD5933_IN_PGA_GAIN_AVAIL);
+
+static IIO_DEVICE_ATTR(out0_freq_points, S_IRUGO | S_IWUSR,
+			ad5933_show,
+			ad5933_store,
+			AD5933_FREQ_POINTS);
+
+static IIO_DEVICE_ATTR(out0_settling_cycles, S_IRUGO | S_IWUSR,
+			ad5933_show,
+			ad5933_store,
+			AD5933_OUT_SETTLING_CYCLES);
+
+/* note:
+ * ideally we would handle the scale attributes via the iio_info
+ * (read|write)_raw methods, however this part is a untypical since we
+ * don't create dedicated sysfs channel attributes for out0 and in0.
+ */
+static struct attribute *ad5933_attributes[] = {
+	&iio_dev_attr_out0_scale.dev_attr.attr,
+	&iio_dev_attr_out0_scale_available.dev_attr.attr,
+	&iio_dev_attr_out0_freq_start.dev_attr.attr,
+	&iio_dev_attr_out0_freq_increment.dev_attr.attr,
+	&iio_dev_attr_out0_freq_points.dev_attr.attr,
+	&iio_dev_attr_out0_settling_cycles.dev_attr.attr,
+	&iio_dev_attr_in0_scale.dev_attr.attr,
+	&iio_dev_attr_in0_scale_available.dev_attr.attr,
+	NULL
+};
+
+static const struct attribute_group ad5933_attribute_group = {
+	.attrs = ad5933_attributes,
+};
+
+static int ad5933_read_raw(struct iio_dev *dev_info,
+			   struct iio_chan_spec const *chan,
+			   int *val,
+			   int *val2,
+			   long m)
+{
+	struct ad5933_state *st = iio_priv(dev_info);
+	unsigned short dat;
+	int ret = -EINVAL;
+
+	mutex_lock(&dev_info->mlock);
+	switch (m) {
+	case 0:
+		if (iio_ring_enabled(dev_info)) {
+			ret = -EBUSY;
+			goto out;
+		}
+		ret = ad5933_cmd(st, AD5933_CTRL_MEASURE_TEMP);
+		if (ret < 0)
+			goto out;
+		ret = ad5933_wait_busy(st, AD5933_STAT_TEMP_VALID);
+		if (ret < 0)
+			goto out;
+
+		ret = ad5933_i2c_read(st->client,
+				AD5933_REG_TEMP_DATA, 2,
+				(u8 *)&dat);
+		if (ret < 0)
+			goto out;
+		mutex_unlock(&dev_info->mlock);
+		ret = be16_to_cpu(dat);
+		/* Temp in Milli degrees Celsius */
+		if (ret < 8192)
+			*val = ret * 1000 / 32;
+		else
+			*val = (ret - 16384) * 1000 / 32;
+
+		return IIO_VAL_INT;
+	}
+
+out:
+	mutex_unlock(&dev_info->mlock);
+	return ret;
+}
+
+static const struct iio_info ad5933_info = {
+	.read_raw = &ad5933_read_raw,
+	.attrs = &ad5933_attribute_group,
+	.driver_module = THIS_MODULE,
+};
+
+static int ad5933_ring_preenable(struct iio_dev *indio_dev)
+{
+	struct ad5933_state *st = iio_priv(indio_dev);
+	struct iio_ring_buffer *ring = indio_dev->ring;
+	size_t d_size;
+	int ret;
+
+	if (!ring->scan_count)
+		return -EINVAL;
+
+	d_size = ring->scan_count *
+		 ad5933_channels[1].scan_type.storagebits / 8;
+
+	if (indio_dev->ring->access->set_bytes_per_datum)
+		indio_dev->ring->access->set_bytes_per_datum(indio_dev->ring,
+							     d_size);
+
+	ret = ad5933_reset(st);
+	if (ret < 0)
+		return ret;
+
+	ret = ad5933_cmd(st, AD5933_CTRL_STANDBY);
+	if (ret < 0)
+		return ret;
+
+	ret = ad5933_cmd(st, AD5933_CTRL_INIT_START_FREQ);
+	if (ret < 0)
+		return ret;
+
+	st->state = AD5933_CTRL_INIT_START_FREQ;
+
+	return 0;
+}
+
+static int ad5933_ring_postenable(struct iio_dev *indio_dev)
+{
+	struct ad5933_state *st = iio_priv(indio_dev);
+
+	/* AD5933_CTRL_INIT_START_FREQ:
+	 * High Q complex circuits require a long time to reach steady state.
+	 * To facilitate the measurement of such impedances, this mode allows
+	 * the user full control of the settling time requirement before
+	 * entering start frequency sweep mode where the impedance measurement
+	 * takes place. In this mode the impedance is excited with the
+	 * programmed start frequency (ad5933_ring_preenable),
+	 * but no measurement takes place.
+	 */
+
+	schedule_delayed_work(&st->work,
+			      msecs_to_jiffies(AD5933_INIT_EXCITATION_TIME_ms));
+	return 0;
+}
+
+static int ad5933_ring_postdisable(struct iio_dev *indio_dev)
+{
+	struct ad5933_state *st = iio_priv(indio_dev);
+
+	cancel_delayed_work_sync(&st->work);
+	return ad5933_cmd(st, AD5933_CTRL_POWER_DOWN);
+}
+
+static const struct iio_ring_setup_ops ad5933_ring_setup_ops = {
+	.preenable = &ad5933_ring_preenable,
+	.postenable = &ad5933_ring_postenable,
+	.postdisable = &ad5933_ring_postdisable,
+};
+
+static int ad5933_register_ring_funcs_and_init(struct iio_dev *indio_dev)
+{
+	indio_dev->ring = iio_sw_rb_allocate(indio_dev);
+	if (!indio_dev->ring)
+		return -ENOMEM;
+
+	/* Effectively select the ring buffer implementation */
+	indio_dev->ring->access = &ring_sw_access_funcs;
+
+	/* Ring buffer functions - here trigger setup related */
+	indio_dev->ring->setup_ops = &ad5933_ring_setup_ops;
+
+	indio_dev->modes |= INDIO_RING_HARDWARE_BUFFER;
+
+	return 0;
+}
+
+static void ad5933_work(struct work_struct *work)
+{
+	struct ad5933_state *st = container_of(work,
+		struct ad5933_state, work.work);
+	struct iio_dev *indio_dev = i2c_get_clientdata(st->client);
+	struct iio_ring_buffer *ring = indio_dev->ring;
+	signed short buf[2];
+	unsigned char status;
+
+	mutex_lock(&indio_dev->mlock);
+	if (st->state == AD5933_CTRL_INIT_START_FREQ) {
+		/* start sweep */
+		ad5933_cmd(st, AD5933_CTRL_START_SWEEP);
+		st->state = AD5933_CTRL_START_SWEEP;
+		schedule_delayed_work(&st->work, st->poll_time_jiffies);
+		mutex_unlock(&indio_dev->mlock);
+		return;
+	}
+
+	ad5933_i2c_read(st->client, AD5933_REG_STATUS, 1, &status);
+
+	if (status & AD5933_STAT_DATA_VALID) {
+		ad5933_i2c_read(st->client,
+				(ring->scan_mask & (1 << 0)) ?
+				AD5933_REG_REAL_DATA : AD5933_REG_IMAG_DATA,
+				ring->scan_count * 2, (u8 *)buf);
+
+		if (ring->scan_count == 2) {
+			buf[0] = be16_to_cpu(buf[0]);
+			buf[1] = be16_to_cpu(buf[1]);
+		} else {
+			buf[0] = be16_to_cpu(buf[0]);
+		}
+		/* save datum to the ring */
+		ring->access->store_to(ring, (u8 *)buf, iio_get_time_ns());
+	} else {
+		/* no data available - try again later */
+		schedule_delayed_work(&st->work, st->poll_time_jiffies);
+		mutex_unlock(&indio_dev->mlock);
+		return;
+	}
+
+	if (status & AD5933_STAT_SWEEP_DONE) {
+		/* last sample received - power down do nothing until
+		 * the ring enable is toggled */
+		ad5933_cmd(st, AD5933_CTRL_POWER_DOWN);
+	} else {
+		/* we just received a valid datum, move on to the next */
+		ad5933_cmd(st, AD5933_CTRL_INC_FREQ);
+		schedule_delayed_work(&st->work, st->poll_time_jiffies);
+	}
+
+	mutex_unlock(&indio_dev->mlock);
+}
+
+static int __devinit ad5933_probe(struct i2c_client *client,
+				   const struct i2c_device_id *id)
+{
+	int ret, regdone = 0, voltage_uv = 0;
+	struct ad5933_platform_data *pdata = client->dev.platform_data;
+	struct ad5933_state *st;
+	struct iio_dev *indio_dev = iio_allocate_device(sizeof(*st));
+	if (indio_dev == NULL)
+		return -ENOMEM;
+
+	st = iio_priv(indio_dev);
+	i2c_set_clientdata(client, indio_dev);
+	st->client = client;
+
+	if (!pdata)
+		st->pdata = &ad5933_default_pdata;
+	else
+		st->pdata = pdata;
+
+	st->reg = regulator_get(&client->dev, "vcc");
+	if (!IS_ERR(st->reg)) {
+		ret = regulator_enable(st->reg);
+		if (ret)
+			goto error_put_reg;
+		voltage_uv = regulator_get_voltage(st->reg);
+	}
+
+	if (voltage_uv)
+		st->vref_mv = voltage_uv / 1000;
+	else
+		st->vref_mv = st->pdata->vref_mv;
+
+	if (st->pdata->ext_clk_Hz) {
+		st->mclk_hz = st->pdata->ext_clk_Hz;
+		st->ctrl_lb = AD5933_CTRL_EXT_SYSCLK;
+	} else {
+		st->mclk_hz = AD5933_INT_OSC_FREQ_Hz;
+		st->ctrl_lb = AD5933_CTRL_INT_SYSCLK;
+	}
+
+	ad5933_calc_out_ranges(st);
+	INIT_DELAYED_WORK(&st->work, ad5933_work);
+	st->poll_time_jiffies = msecs_to_jiffies(AD5933_POLL_TIME_ms);
+
+	indio_dev->dev.parent = &client->dev;
+	indio_dev->info = &ad5933_info;
+	indio_dev->name = id->name;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->channels = ad5933_channels;
+	indio_dev->num_channels = 1; /* only register temp0_input */
+
+	ret = ad5933_register_ring_funcs_and_init(indio_dev);
+	if (ret)
+		goto error_disable_reg;
+
+	ret = iio_device_register(indio_dev);
+	if (ret)
+		goto error_unreg_ring;
+	regdone = 1;
+
+	/* skip temp0_input, register in0_(real|imag)_raw */
+	ret = iio_ring_buffer_register_ex(indio_dev->ring, 0,
+					  &ad5933_channels[1],
+					  2);
+	if (ret)
+		goto error_unreg_ring;
+
+	/* enable both REAL and IMAG channels by default */
+	iio_scan_mask_set(indio_dev->ring, 0);
+	iio_scan_mask_set(indio_dev->ring, 1);
+
+	ret = ad5933_setup(st);
+	if (ret)
+		goto error_uninitialize_ring;
+
+	return 0;
+
+error_uninitialize_ring:
+	iio_ring_buffer_unregister(indio_dev->ring);
+error_unreg_ring:
+	iio_sw_rb_free(indio_dev->ring);
+error_disable_reg:
+	if (!IS_ERR(st->reg))
+		regulator_disable(st->reg);
+error_put_reg:
+	if (!IS_ERR(st->reg))
+		regulator_put(st->reg);
+
+	if (regdone)
+		iio_device_unregister(indio_dev);
+	else
+		iio_free_device(indio_dev);
+
+	return ret;
+}
+
+static __devexit int ad5933_remove(struct i2c_client *client)
+{
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct ad5933_state *st = iio_priv(indio_dev);
+
+	iio_ring_buffer_unregister(indio_dev->ring);
+	iio_sw_rb_free(indio_dev->ring);
+	if (!IS_ERR(st->reg)) {
+		regulator_disable(st->reg);
+		regulator_put(st->reg);
+	}
+	iio_device_unregister(indio_dev);
+
+	return 0;
+}
+
+static const struct i2c_device_id ad5933_id[] = {
+	{ "ad5933", 0 },
+	{ "ad5934", 0 },
+	{}
+};
+
+MODULE_DEVICE_TABLE(i2c, ad5933_id);
+
+static struct i2c_driver ad5933_driver = {
+	.driver = {
+		.name = "ad5933",
+	},
+	.probe = ad5933_probe,
+	.remove = __devexit_p(ad5933_remove),
+	.id_table = ad5933_id,
+};
+
+static __init int ad5933_init(void)
+{
+	return i2c_add_driver(&ad5933_driver);
+}
+module_init(ad5933_init);
+
+static __exit void ad5933_exit(void)
+{
+	i2c_del_driver(&ad5933_driver);
+}
+module_exit(ad5933_exit);
+
+MODULE_AUTHOR("Michael Hennerich <hennerich@blackfin.uclinux.org>");
+MODULE_DESCRIPTION("Analog Devices AD5933 Impedance Conv. Network Analyzer");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/impedance-analyzer/ad5933.h b/drivers/staging/iio/impedance-analyzer/ad5933.h
new file mode 100644
index 000000000000..b140e42d67cf
--- /dev/null
+++ b/drivers/staging/iio/impedance-analyzer/ad5933.h
@@ -0,0 +1,28 @@
+/*
+ * AD5933 AD5934 Impedance Converter, Network Analyzer
+ *
+ * Copyright 2011 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2.
+ */
+
+#ifndef IIO_ADC_AD5933_H_
+#define IIO_ADC_AD5933_H_
+
+/*
+ * TODO: struct ad5933_platform_data needs to go into include/linux/iio
+ */
+
+/**
+ * struct ad5933_platform_data - platform specific data
+ * @ext_clk_Hz:		the external clock frequency in Hz, if not set
+ *			the driver uses the internal clock (16.776 MHz)
+ * @vref_mv:		the external reference voltage in millivolt
+ */
+
+struct ad5933_platform_data {
+	unsigned long			ext_clk_Hz;
+	unsigned short			vref_mv;
+};
+
+#endif /* IIO_ADC_AD5933_H_ */
diff --git a/drivers/staging/iio/imu/adis16400_core.c b/drivers/staging/iio/imu/adis16400_core.c
index a2c3b67dcbdf..58a29b1e243c 100644
--- a/drivers/staging/iio/imu/adis16400_core.c
+++ b/drivers/staging/iio/imu/adis16400_core.c
@@ -25,21 +25,18 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
 #include "../ring_generic.h"
-#include "../accel/accel.h"
-#include "../adc/adc.h"
-#include "../gyro/gyro.h"
-#include "../magnetometer/magnet.h"
-
 #include "adis16400.h"
 
 #define DRIVER_NAME		"adis16400"
 
 enum adis16400_chip_variant {
 	ADIS16300,
+	ADIS16344,
 	ADIS16350,
 	ADIS16360,
 	ADIS16362,
@@ -150,8 +147,6 @@ static int adis16400_spi_read_reg_16(struct iio_dev *indio_dev,
 	mutex_lock(&st->buf_lock);
 	st->tx[0] = ADIS16400_READ_REG(lower_reg_address);
 	st->tx[1] = 0;
-	st->tx[2] = 0;
-	st->tx[3] = 0;
 
 	spi_message_init(&msg);
 	spi_message_add_tail(&xfers[0], &msg);
@@ -240,17 +235,18 @@ static ssize_t adis16400_write_reset(struct device *dev,
 		struct device_attribute *attr,
 		const char *buf, size_t len)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
+	bool val;
+	int ret;
 
-	if (len < 1)
-		return -1;
-	switch (buf[0]) {
-	case '1':
-	case 'y':
-	case 'Y':
-		return adis16400_reset(indio_dev);
-	}
-	return -1;
+	ret = strtobool(buf, &val);
+	if (ret < 0)
+		return ret;
+	if (val)
+		ret = adis16400_reset(dev_get_drvdata(dev));
+	if (ret < 0)
+		return ret;
+
+	return len;
 }
 
 int adis16400_set_irq(struct iio_dev *indio_dev, bool enable)
@@ -695,6 +691,38 @@ static struct iio_chan_spec adis16300_channels[] = {
 	IIO_CHAN_SOFT_TIMESTAMP(14)
 };
 
+static const struct iio_chan_spec adis16344_channels[] = {
+	IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_X,
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SHARED),
+		 gyro_x, ADIS16400_SCAN_GYRO_X, IIO_ST('s', 14, 16, 0), 0),
+	IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Y,
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SHARED),
+		 gyro_y, ADIS16400_SCAN_GYRO_Y, IIO_ST('s', 14, 16, 0), 0),
+	IIO_CHAN(IIO_GYRO, 1, 0, 0, NULL, 0, IIO_MOD_Z,
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SHARED),
+		 gyro_z, ADIS16400_SCAN_GYRO_Z, IIO_ST('s', 14, 16, 0), 0),
+	IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_X,
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SHARED),
+		 accel_x, ADIS16400_SCAN_ACC_X, IIO_ST('s', 14, 16, 0), 0),
+	IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Y,
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SHARED),
+		 accel_y, ADIS16400_SCAN_ACC_Y, IIO_ST('s', 14, 16, 0), 0),
+	IIO_CHAN(IIO_ACCEL, 1, 0, 0, NULL, 0, IIO_MOD_Z,
+		 (1 << IIO_CHAN_INFO_CALIBBIAS_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SHARED),
+		 accel_z, ADIS16400_SCAN_ACC_Z, IIO_ST('s', 14, 16, 0), 0),
+	IIO_CHAN(IIO_TEMP, 0, 1, 0, NULL, 0, 0,
+		 (1 << IIO_CHAN_INFO_OFFSET_SEPARATE) |
+		 (1 << IIO_CHAN_INFO_SCALE_SEPARATE),
+		 temp0, ADIS16350_SCAN_TEMP_X, IIO_ST('s', 12, 16, 0), 0),
+	IIO_CHAN_SOFT_TIMESTAMP(12)
+};
+
 static struct attribute *adis16400_attributes[] = {
 	&iio_dev_attr_sampling_frequency.dev_attr.attr,
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
@@ -719,6 +747,16 @@ static struct adis16400_chip_info adis16400_chips[] = {
 		(1 << ADIS16300_SCAN_INCLI_X) | (1 << ADIS16300_SCAN_INCLI_Y) |
 		(1 << 14),
 	},
+	[ADIS16344] = {
+		.channels = adis16344_channels,
+		.num_channels = ARRAY_SIZE(adis16344_channels),
+		.gyro_scale_micro = 873,
+		.accel_scale_micro = 981,
+		.default_scan_mask = (1 << ADIS16400_SCAN_GYRO_X) |
+		(1 << ADIS16400_SCAN_GYRO_Y) | (1 << ADIS16400_SCAN_GYRO_Z) |
+		(1 << ADIS16400_SCAN_ACC_X) | (1 << ADIS16400_SCAN_ACC_Y) |
+		(1 << ADIS16400_SCAN_ACC_Z),
+	},
 	[ADIS16350] = {
 		.channels = adis16350_channels,
 		.num_channels = ARRAY_SIZE(adis16350_channels),
@@ -874,6 +912,7 @@ err_ret:
 
 static const struct spi_device_id adis16400_id[] = {
 	{"adis16300", ADIS16300},
+	{"adis16344", ADIS16344},
 	{"adis16350", ADIS16350},
 	{"adis16354", ADIS16350},
 	{"adis16355", ADIS16350},
diff --git a/drivers/staging/iio/imu/adis16400_ring.c b/drivers/staging/iio/imu/adis16400_ring.c
index 3612373ddede..3fc24037db29 100644
--- a/drivers/staging/iio/imu/adis16400_ring.c
+++ b/drivers/staging/iio/imu/adis16400_ring.c
@@ -1,21 +1,13 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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/bitops.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "../accel/accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "adis16400.h"
 
 /**
@@ -119,7 +111,7 @@ static int adis16350_spi_read_all(struct device *dev, u8 *rx)
 static irqreturn_t adis16400_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct adis16400_state *st = iio_priv(indio_dev);
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	int i = 0, j, ret = 0;
diff --git a/drivers/staging/iio/imu/adis16400_trigger.c b/drivers/staging/iio/imu/adis16400_trigger.c
index c6ec41a02a69..3860d92f1ae7 100644
--- a/drivers/staging/iio/imu/adis16400_trigger.c
+++ b/drivers/staging/iio/imu/adis16400_trigger.c
@@ -1,14 +1,8 @@
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "adis16400.h"
 
@@ -24,6 +18,11 @@ static int adis16400_data_rdy_trigger_set_state(struct iio_trigger *trig,
 	return adis16400_set_irq(indio_dev, state);
 }
 
+static const struct iio_trigger_ops adis16400_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &adis16400_data_rdy_trigger_set_state,
+};
+
 int adis16400_probe_trigger(struct iio_dev *indio_dev)
 {
 	int ret;
@@ -45,9 +44,8 @@ int adis16400_probe_trigger(struct iio_dev *indio_dev)
 	if (ret)
 		goto error_free_trig;
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &adis16400_data_rdy_trigger_set_state;
+	st->trig->ops = &adis16400_trigger_ops;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 19819e7578c6..ed8a6df5bf42 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -22,7 +22,8 @@
 #include <linux/cdev.h>
 #include <linux/slab.h>
 #include "iio.h"
-#include "trigger_consumer.h"
+#include "iio_core.h"
+#include "iio_core_trigger.h"
 
 #define IIO_ID_PREFIX "device"
 #define IIO_ID_FORMAT IIO_ID_PREFIX "%d"
@@ -35,7 +36,6 @@ static DEFINE_IDA(iio_chrdev_ida);
 static DEFINE_SPINLOCK(iio_ida_lock);
 
 dev_t iio_devt;
-EXPORT_SYMBOL(iio_devt);
 
 #define IIO_DEV_MAX 256
 struct bus_type iio_bus_type = {
@@ -85,8 +85,38 @@ static const char * const iio_chan_info_postfix[] = {
 	[IIO_CHAN_INFO_CALIBBIAS_SHARED/2] = "calibbias",
 	[IIO_CHAN_INFO_PEAK_SHARED/2] = "peak_raw",
 	[IIO_CHAN_INFO_PEAK_SCALE_SHARED/2] = "peak_scale",
+	[IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SHARED/2]
+	= "quadrature_correction_raw",
 };
 
+/* Return a negative errno on failure */
+static int iio_get_new_ida_val(struct ida *this_ida)
+{
+	int ret;
+	int val;
+
+ida_again:
+	if (unlikely(ida_pre_get(this_ida, GFP_KERNEL) == 0))
+		return -ENOMEM;
+
+	spin_lock(&iio_ida_lock);
+	ret = ida_get_new(this_ida, &val);
+	spin_unlock(&iio_ida_lock);
+	if (unlikely(ret == -EAGAIN))
+		goto ida_again;
+	else if (unlikely(ret))
+		return ret;
+
+	return val;
+}
+
+static void iio_free_ida_val(struct ida *this_ida, int id)
+{
+	spin_lock(&iio_ida_lock);
+	ida_remove(this_ida, id);
+	spin_unlock(&iio_ida_lock);
+}
+
 int iio_push_event(struct iio_dev *dev_info,
 		   int ev_line,
 		   int ev_code,
@@ -246,28 +276,18 @@ static struct device_type iio_event_type = {
 
 int iio_device_get_chrdev_minor(void)
 {
-	int ret, val;
+	int ret;
 
-ida_again:
-	if (unlikely(ida_pre_get(&iio_chrdev_ida, GFP_KERNEL) == 0))
-		return -ENOMEM;
-	spin_lock(&iio_ida_lock);
-	ret = ida_get_new(&iio_chrdev_ida, &val);
-	spin_unlock(&iio_ida_lock);
-	if (unlikely(ret == -EAGAIN))
-		goto ida_again;
-	else if (unlikely(ret))
+	ret = iio_get_new_ida_val(&iio_chrdev_ida);
+	if (ret < IIO_DEV_MAX) /* both errors and valid */
 		return ret;
-	if (val > IIO_DEV_MAX)
+	else
 		return -ENOMEM;
-	return val;
 }
 
 void iio_device_free_chrdev_minor(int val)
 {
-	spin_lock(&iio_ida_lock);
-	ida_remove(&iio_chrdev_ida, val);
-	spin_unlock(&iio_ida_lock);
+	iio_free_ida_val(&iio_chrdev_ida, val);
 }
 
 static int iio_setup_ev_int(struct iio_event_interface *ev_int,
@@ -329,24 +349,6 @@ static void iio_free_ev_int(struct iio_event_interface *ev_int)
 	put_device(&ev_int->dev);
 }
 
-static int __init iio_dev_init(void)
-{
-	int err;
-
-	err = alloc_chrdev_region(&iio_devt, 0, IIO_DEV_MAX, "iio");
-	if (err < 0)
-		printk(KERN_ERR "%s: failed to allocate char dev region\n",
-		       __FILE__);
-
-	return err;
-}
-
-static void __exit iio_dev_exit(void)
-{
-	if (iio_devt)
-		unregister_chrdev_region(iio_devt, IIO_DEV_MAX);
-}
-
 static int __init iio_init(void)
 {
 	int ret;
@@ -360,9 +362,12 @@ static int __init iio_init(void)
 		goto error_nothing;
 	}
 
-	ret = iio_dev_init();
-	if (ret < 0)
+	ret = alloc_chrdev_region(&iio_devt, 0, IIO_DEV_MAX, "iio");
+	if (ret < 0) {
+		printk(KERN_ERR "%s: failed to allocate char dev region\n",
+		       __FILE__);
 		goto error_unregister_bus_type;
+	}
 
 	return 0;
 
@@ -374,7 +379,8 @@ error_nothing:
 
 static void __exit iio_exit(void)
 {
-	iio_dev_exit();
+	if (iio_devt)
+		unregister_chrdev_region(iio_devt, IIO_DEV_MAX);
 	bus_unregister(&iio_bus_type);
 }
 
@@ -524,6 +530,7 @@ static int __iio_build_postfix(struct iio_chan_spec const *chan,
 	return 0;
 }
 
+static
 int __iio_device_attr_init(struct device_attribute *dev_attr,
 			   const char *postfix,
 			   struct iio_chan_spec const *chan,
@@ -596,7 +603,7 @@ error_ret:
 	return ret;
 }
 
-void __iio_device_attr_deinit(struct device_attribute *dev_attr)
+static void __iio_device_attr_deinit(struct device_attribute *dev_attr)
 {
 	kfree(dev_attr->attr.name);
 }
@@ -725,19 +732,29 @@ static ssize_t iio_show_dev_name(struct device *dev,
 
 static DEVICE_ATTR(name, S_IRUGO, iio_show_dev_name, NULL);
 
+static struct attribute *iio_base_dummy_attrs[] = {
+	NULL
+};
+static struct attribute_group iio_base_dummy_group = {
+	.attrs = iio_base_dummy_attrs,
+};
+
 static int iio_device_register_sysfs(struct iio_dev *dev_info)
 {
 	int i, ret = 0;
 	struct iio_dev_attr *p, *n;
 
-	if (dev_info->info->attrs) {
+	if (dev_info->info->attrs)
 		ret = sysfs_create_group(&dev_info->dev.kobj,
 					 dev_info->info->attrs);
-		if (ret) {
-			dev_err(dev_info->dev.parent,
-				"Failed to register sysfs hooks\n");
-			goto error_ret;
-		}
+	else
+		ret = sysfs_create_group(&dev_info->dev.kobj,
+					 &iio_base_dummy_group);
+	
+	if (ret) {
+		dev_err(dev_info->dev.parent,
+			"Failed to register sysfs hooks\n");
+		goto error_ret;
 	}
 
 	/*
@@ -753,7 +770,7 @@ static int iio_device_register_sysfs(struct iio_dev *dev_info)
 			if (ret < 0)
 				goto error_clear_attrs;
 		}
-	if (dev_info->name) {
+	if (dev_info->name) { 
 		ret = sysfs_add_file_to_group(&dev_info->dev.kobj,
 					      &dev_attr_name.attr,
 					      NULL);
@@ -770,6 +787,8 @@ error_clear_attrs:
 	}
 	if (dev_info->info->attrs)
 		sysfs_remove_group(&dev_info->dev.kobj, dev_info->info->attrs);
+	else
+		sysfs_remove_group(&dev_info->dev.kobj, &iio_base_dummy_group);
 error_ret:
 	return ret;
 
@@ -790,38 +809,10 @@ static void iio_device_unregister_sysfs(struct iio_dev *dev_info)
 
 	if (dev_info->info->attrs)
 		sysfs_remove_group(&dev_info->dev.kobj, dev_info->info->attrs);
+	else
+		sysfs_remove_group(&dev_info->dev.kobj, &iio_base_dummy_group);
 }
 
-/* Return a negative errno on failure */
-int iio_get_new_ida_val(struct ida *this_ida)
-{
-	int ret;
-	int val;
-
-ida_again:
-	if (unlikely(ida_pre_get(this_ida, GFP_KERNEL) == 0))
-		return -ENOMEM;
-
-	spin_lock(&iio_ida_lock);
-	ret = ida_get_new(this_ida, &val);
-	spin_unlock(&iio_ida_lock);
-	if (unlikely(ret == -EAGAIN))
-		goto ida_again;
-	else if (unlikely(ret))
-		return ret;
-
-	return val;
-}
-EXPORT_SYMBOL(iio_get_new_ida_val);
-
-void iio_free_ida_val(struct ida *this_ida, int id)
-{
-	spin_lock(&iio_ida_lock);
-	ida_remove(this_ida, id);
-	spin_unlock(&iio_ida_lock);
-}
-EXPORT_SYMBOL(iio_free_ida_val);
-
 static const char * const iio_ev_type_text[] = {
 	[IIO_EV_TYPE_THRESH] = "thresh",
 	[IIO_EV_TYPE_MAG] = "mag",
@@ -911,7 +902,7 @@ static int iio_device_add_event_sysfs(struct iio_dev *dev_info,
 				      struct iio_chan_spec const *chan)
 {
 
-	int ret = 0, i, mask;
+	int ret = 0, i, mask = 0;
 	char *postfix;
 	if (!chan->event_mask)
 		return 0;
@@ -944,6 +935,7 @@ static int iio_device_add_event_sysfs(struct iio_dev *dev_info,
 			break;
 		default:
 			printk(KERN_INFO "currently unhandled type of event\n");
+			continue;
 		}
 		ret = __iio_add_chan_devattr(postfix,
 					     NULL,
@@ -989,18 +981,17 @@ error_ret:
 	return ret;
 }
 
-static inline void __iio_remove_all_event_sysfs(struct iio_dev *dev_info,
-						const char *groupname,
-						int num)
+static inline void __iio_remove_event_config_attrs(struct iio_dev *dev_info,
+						  int i)
 {
 	struct iio_dev_attr *p, *n;
 	list_for_each_entry_safe(p, n,
-				 &dev_info->event_interfaces[num].
+				 &dev_info->event_interfaces[i].
 				 dev_attr_list, l) {
 		sysfs_remove_file_from_group(&dev_info
-					     ->event_interfaces[num].dev.kobj,
+					     ->event_interfaces[i].dev.kobj,
 					     &p->dev_attr.attr,
-					     groupname);
+					     NULL);
 		kfree(p->dev_attr.attr.name);
 		kfree(p);
 	}
@@ -1010,7 +1001,7 @@ static inline int __iio_add_event_config_attrs(struct iio_dev *dev_info, int i)
 {
 	int j;
 	int ret;
-	INIT_LIST_HEAD(&dev_info->event_interfaces[0].dev_attr_list);
+	INIT_LIST_HEAD(&dev_info->event_interfaces[i].dev_attr_list);
 	/* Dynically created from the channels array */
 	if (dev_info->channels) {
 		for (j = 0; j < dev_info->num_channels; j++) {
@@ -1024,18 +1015,11 @@ static inline int __iio_add_event_config_attrs(struct iio_dev *dev_info, int i)
 	return 0;
 
 error_clear_attrs:
-	__iio_remove_all_event_sysfs(dev_info, NULL, i);
+	__iio_remove_event_config_attrs(dev_info, i);
 
 	return ret;
 }
 
-static inline int __iio_remove_event_config_attrs(struct iio_dev *dev_info,
-						  int i)
-{
-	__iio_remove_all_event_sysfs(dev_info, NULL, i);
-	return 0;
-}
-
 static int iio_device_register_eventset(struct iio_dev *dev_info)
 {
 	int ret = 0, i, j;
@@ -1061,7 +1045,7 @@ static int iio_device_register_eventset(struct iio_dev *dev_info)
 		if (ret) {
 			dev_err(&dev_info->dev,
 				"Could not get chrdev interface\n");
-			goto error_free_setup_ev_ints;
+			goto error_free_setup_event_lines;
 		}
 
 		dev_set_drvdata(&dev_info->event_interfaces[i].dev,
@@ -1077,31 +1061,33 @@ static int iio_device_register_eventset(struct iio_dev *dev_info)
 		if (ret) {
 			dev_err(&dev_info->dev,
 				"Failed to register sysfs for event attrs");
-			goto error_remove_sysfs_interfaces;
+			iio_free_ev_int(&dev_info->event_interfaces[i]);
+			goto error_free_setup_event_lines;
 		}
-	}
-
-	for (i = 0; i < dev_info->info->num_interrupt_lines; i++) {
 		ret = __iio_add_event_config_attrs(dev_info, i);
-		if (ret)
-			goto error_unregister_config_attrs;
+		if (ret) {
+			if (dev_info->info->event_attrs != NULL)
+				sysfs_remove_group(&dev_info
+						   ->event_interfaces[i]
+						   .dev.kobj,
+						   &dev_info->info
+						   ->event_attrs[i]);
+			iio_free_ev_int(&dev_info->event_interfaces[i]);
+			goto error_free_setup_event_lines;
+		}
 	}
 
 	return 0;
 
-error_unregister_config_attrs:
-	for (j = 0; j < i; j++)
-		__iio_remove_event_config_attrs(dev_info, i);
-	i = dev_info->info->num_interrupt_lines - 1;
-error_remove_sysfs_interfaces:
-	for (j = 0; j < i; j++)
+error_free_setup_event_lines:
+	for (j = 0; j < i; j++) {
+		__iio_remove_event_config_attrs(dev_info, j);
 		if (dev_info->info->event_attrs != NULL)
 			sysfs_remove_group(&dev_info
-				   ->event_interfaces[j].dev.kobj,
-				   &dev_info->info->event_attrs[j]);
-error_free_setup_ev_ints:
-	for (j = 0; j < i; j++)
+					   ->event_interfaces[j].dev.kobj,
+					   &dev_info->info->event_attrs[j]);
 		iio_free_ev_int(&dev_info->event_interfaces[j]);
+	}
 	kfree(dev_info->event_interfaces);
 error_ret:
 
@@ -1120,17 +1106,16 @@ static void iio_device_unregister_eventset(struct iio_dev *dev_info)
 			sysfs_remove_group(&dev_info
 					   ->event_interfaces[i].dev.kobj,
 					   &dev_info->info->event_attrs[i]);
-	}
-
-	for (i = 0; i < dev_info->info->num_interrupt_lines; i++)
 		iio_free_ev_int(&dev_info->event_interfaces[i]);
+	}
 	kfree(dev_info->event_interfaces);
 }
 
 static void iio_dev_release(struct device *device)
 {
+	struct iio_dev *dev_info = container_of(device, struct iio_dev, dev);
 	iio_put();
-	kfree(to_iio_dev(device));
+	kfree(dev_info);
 }
 
 static struct device_type iio_dev_type = {
diff --git a/drivers/staging/iio/industrialio-ring.c b/drivers/staging/iio/industrialio-ring.c
index 843eb82a69ba..dce50b1a4ee9 100644
--- a/drivers/staging/iio/industrialio-ring.c
+++ b/drivers/staging/iio/industrialio-ring.c
@@ -21,6 +21,7 @@
 #include <linux/poll.h>
 
 #include "iio.h"
+#include "iio_core.h"
 #include "ring_generic.h"
 
 /**
diff --git a/drivers/staging/iio/industrialio-trigger.c b/drivers/staging/iio/industrialio-trigger.c
index 90ca2df23eab..f1ece8619e8d 100644
--- a/drivers/staging/iio/industrialio-trigger.c
+++ b/drivers/staging/iio/industrialio-trigger.c
@@ -8,7 +8,6 @@
  */
 
 #include <linux/kernel.h>
-#include <linux/module.h>
 #include <linux/idr.h>
 #include <linux/err.h>
 #include <linux/device.h>
@@ -18,6 +17,8 @@
 
 #include "iio.h"
 #include "trigger.h"
+#include "iio_core.h"
+#include "iio_core_trigger.h"
 #include "trigger_consumer.h"
 
 /* RFC - Question of approach
@@ -173,13 +174,12 @@ static struct iio_trigger *iio_trigger_find_by_name(const char *name,
 void iio_trigger_poll(struct iio_trigger *trig, s64 time)
 {
 	int i;
-	if (!trig->use_count) {
+	if (!trig->use_count)
 		for (i = 0; i < CONFIG_IIO_CONSUMERS_PER_TRIGGER; i++)
 			if (trig->subirqs[i].enabled) {
 				trig->use_count++;
 				generic_handle_irq(trig->subirq_base + i);
 			}
-	}
 }
 EXPORT_SYMBOL(iio_trigger_poll);
 
@@ -206,8 +206,8 @@ EXPORT_SYMBOL(iio_trigger_poll_chained);
 void iio_trigger_notify_done(struct iio_trigger *trig)
 {
 	trig->use_count--;
-	if (trig->use_count == 0 && trig->try_reenable)
-		if (trig->try_reenable(trig)) {
+	if (trig->use_count == 0 && trig->ops && trig->ops->try_reenable)
+		if (trig->ops->try_reenable(trig)) {
 			/* Missed and interrupt so launch new poll now */
 			iio_trigger_poll(trig, 0);
 		}
@@ -215,6 +215,26 @@ void iio_trigger_notify_done(struct iio_trigger *trig)
 EXPORT_SYMBOL(iio_trigger_notify_done);
 
 /* Trigger Consumer related functions */
+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,
+				      ilog2(1));
+	mutex_unlock(&trig->pool_lock);
+	if (ret >= 0)
+		ret += trig->subirq_base;
+
+	return ret;
+}
+
+static void iio_trigger_put_irq(struct iio_trigger *trig, int irq)
+{
+	mutex_lock(&trig->pool_lock);
+	clear_bit(irq - trig->subirq_base, trig->pool);
+	mutex_unlock(&trig->pool_lock);
+}
 
 /* Complexity in here.  With certain triggers (datardy) an acknowledgement
  * may be needed if the pollfuncs do not include the data read for the
@@ -223,44 +243,45 @@ EXPORT_SYMBOL(iio_trigger_notify_done);
  * the relevant function is in there may be the best option.
  */
 /* Worth protecting against double additions?*/
-int iio_trigger_attach_poll_func(struct iio_trigger *trig,
-				 struct iio_poll_func *pf)
+static int iio_trigger_attach_poll_func(struct iio_trigger *trig,
+					struct iio_poll_func *pf)
 {
 	int ret = 0;
 	bool notinuse
 		= bitmap_empty(trig->pool, CONFIG_IIO_CONSUMERS_PER_TRIGGER);
 
+	/* Prevent the module being removed whilst attached to a trigger */
+	__module_get(pf->indio_dev->info->driver_module);
 	pf->irq = iio_trigger_get_irq(trig);
 	ret = request_threaded_irq(pf->irq, pf->h, pf->thread,
 				   pf->type, pf->name,
 				   pf);
-	if (trig->set_trigger_state && notinuse)
-		ret = trig->set_trigger_state(trig, true);
+	if (trig->ops && trig->ops->set_trigger_state && notinuse)
+		ret = trig->ops->set_trigger_state(trig, true);
 
 	return ret;
 }
-EXPORT_SYMBOL(iio_trigger_attach_poll_func);
 
-int iio_trigger_dettach_poll_func(struct iio_trigger *trig,
-				  struct iio_poll_func *pf)
+static int iio_trigger_dettach_poll_func(struct iio_trigger *trig,
+					 struct iio_poll_func *pf)
 {
 	int ret = 0;
 	bool no_other_users
 		= (bitmap_weight(trig->pool,
 				 CONFIG_IIO_CONSUMERS_PER_TRIGGER)
 		   == 1);
-	if (trig->set_trigger_state && no_other_users) {
-		ret = trig->set_trigger_state(trig, false);
+	if (trig->ops && trig->ops->set_trigger_state && no_other_users) {
+		ret = trig->ops->set_trigger_state(trig, false);
 		if (ret)
 			goto error_ret;
 	}
 	iio_trigger_put_irq(trig, pf->irq);
 	free_irq(pf->irq, pf);
+	module_put(pf->indio_dev->info->driver_module);
 
 error_ret:
 	return ret;
 }
-EXPORT_SYMBOL(iio_trigger_dettach_poll_func);
 
 irqreturn_t iio_pollfunc_store_time(int irq, void *p)
 {
@@ -274,7 +295,7 @@ struct iio_poll_func
 *iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
 		    irqreturn_t (*thread)(int irq, void *p),
 		    int type,
-		    void *private,
+		    struct iio_dev *indio_dev,
 		    const char *fmt,
 		    ...)
 {
@@ -294,7 +315,7 @@ struct iio_poll_func
 	pf->h = h;
 	pf->thread = thread;
 	pf->type = type;
-	pf->private_data = private;
+	pf->indio_dev = indio_dev;
 
 	return pf;
 }
@@ -318,12 +339,10 @@ static ssize_t iio_trigger_read_current(struct device *dev,
 					char *buf)
 {
 	struct iio_dev *dev_info = dev_get_drvdata(dev);
-	int len = 0;
+
 	if (dev_info->trig)
-		len = sprintf(buf,
-			      "%s\n",
-			      dev_info->trig->name);
-	return len;
+		return sprintf(buf, "%s\n", dev_info->trig->name);
+	return 0;
 }
 
 /**
@@ -358,8 +377,8 @@ static ssize_t iio_trigger_write_current(struct device *dev,
 			return ret;
 	}
 
-	if (trig && trig->validate_device) {
-		ret = trig->validate_device(trig, dev_info);
+	if (trig && trig->ops && trig->ops->validate_device) {
+		ret = trig->ops->validate_device(trig, dev_info);
 		if (ret)
 			return ret;
 	}
@@ -477,6 +496,7 @@ struct iio_trigger *iio_allocate_trigger(const char *fmt, ...)
 					  IRQ_NOPROBE);
 		}
 		iio_get();
+		get_device(&trig->dev);
 	}
 	return trig;
 }
@@ -491,20 +511,18 @@ EXPORT_SYMBOL(iio_free_trigger);
 
 int iio_device_register_trigger_consumer(struct iio_dev *dev_info)
 {
-	int ret;
-	ret = sysfs_create_group(&dev_info->dev.kobj,
-				 &iio_trigger_consumer_attr_group);
-	return ret;
+	return sysfs_create_group(&dev_info->dev.kobj,
+				  &iio_trigger_consumer_attr_group);
 }
-EXPORT_SYMBOL(iio_device_register_trigger_consumer);
 
-int iio_device_unregister_trigger_consumer(struct iio_dev *dev_info)
+void iio_device_unregister_trigger_consumer(struct iio_dev *dev_info)
 {
+	/* Clean up and associated but not attached triggers references */
+	if (dev_info->trig)
+		iio_put_trigger(dev_info->trig);
 	sysfs_remove_group(&dev_info->dev.kobj,
 			   &iio_trigger_consumer_attr_group);
-	return 0;
 }
-EXPORT_SYMBOL(iio_device_unregister_trigger_consumer);
 
 int iio_triggered_ring_postenable(struct iio_dev *indio_dev)
 {
diff --git a/drivers/staging/iio/light/isl29018.c b/drivers/staging/iio/light/isl29018.c
index 426b6af70807..da5bb33a66c1 100644
--- a/drivers/staging/iio/light/isl29018.c
+++ b/drivers/staging/iio/light/isl29018.c
@@ -53,6 +53,10 @@
 #define ISL29018_REG_ADD_DATA_MSB	0x03
 #define ISL29018_MAX_REGS		ISL29018_REG_ADD_DATA_MSB
 
+#define ISL29018_REG_TEST		0x08
+#define ISL29018_TEST_SHIFT		0
+#define ISL29018_TEST_MASK		(0xFF << ISL29018_TEST_SHIFT)
+
 struct isl29018_chip {
 	struct i2c_client	*client;
 	struct mutex		lock;
@@ -457,6 +461,48 @@ static int isl29018_chip_init(struct i2c_client *client)
 
 	memset(chip->reg_cache, 0, sizeof(chip->reg_cache));
 
+	/* Code added per Intersil Application Note 1534:
+	 *     When VDD sinks to approximately 1.8V or below, some of
+	 * the part's registers may change their state. When VDD
+	 * recovers to 2.25V (or greater), the part may thus be in an
+	 * unknown mode of operation. The user can return the part to
+	 * a known mode of operation either by (a) setting VDD = 0V for
+	 * 1 second or more and then powering back up with a slew rate
+	 * of 0.5V/ms or greater, or (b) via I2C disable all ALS/PROX
+	 * conversions, clear the test registers, and then rewrite all
+	 * registers to the desired values.
+	 * ...
+	 * FOR ISL29011, ISL29018, ISL29021, ISL29023
+	 * 1. Write 0x00 to register 0x08 (TEST)
+	 * 2. Write 0x00 to register 0x00 (CMD1)
+	 * 3. Rewrite all registers to the desired values
+	 *
+	 * ISL29018 Data Sheet (FN6619.1, Feb 11, 2010) essentially says
+	 * the same thing EXCEPT the data sheet asks for a 1ms delay after
+	 * writing the CMD1 register.
+	 */
+	status = isl29018_write_data(client, ISL29018_REG_TEST, 0,
+				ISL29018_TEST_MASK, ISL29018_TEST_SHIFT);
+	if (status < 0) {
+		dev_err(&client->dev, "Failed to clear isl29018 TEST reg."
+					"(%d)\n", status);
+		return status;
+	}
+
+	/* See Intersil AN1534 comments above.
+	 * "Operating Mode" (COMMAND1) register is reprogrammed when
+	 * data is read from the device.
+	 */
+	status = isl29018_write_data(client, ISL29018_REG_ADD_COMMAND1, 0,
+				0xff, 0);
+	if (status < 0) {
+		dev_err(&client->dev, "Failed to clear isl29018 CMD1 reg."
+					"(%d)\n", status);
+		return status;
+	}
+
+	msleep(1);	/* per data sheet, page 10 */
+
 	/* set defaults */
 	status = isl29018_set_range(client, chip->range, &new_range);
 	if (status < 0) {
diff --git a/drivers/staging/iio/light/tsl2563.c b/drivers/staging/iio/light/tsl2563.c
index f25243b08472..665a7441b2ee 100644
--- a/drivers/staging/iio/light/tsl2563.c
+++ b/drivers/staging/iio/light/tsl2563.c
@@ -596,7 +596,7 @@ static irqreturn_t tsl2563_event_handler(int irq, void *private)
 	struct tsl2563_chip *chip = iio_priv(dev_info);
 
 	iio_push_event(dev_info, 0,
-		       IIO_UNMOD_EVENT_CODE(IIO_EV_CLASS_LIGHT,
+		       IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
 					    0,
 					    IIO_EV_TYPE_THRESH,
 					    IIO_EV_DIR_EITHER),
@@ -697,7 +697,7 @@ static int __devinit tsl2563_probe(struct i2c_client *client,
 	struct tsl2563_platform_data *pdata = client->dev.platform_data;
 	int err = 0;
 	int ret;
-	u8 id;
+	u8 id = 0;
 
 	indio_dev = iio_allocate_device(sizeof(*chip));
 	if (!indio_dev)
diff --git a/drivers/staging/iio/light/tsl2583.c b/drivers/staging/iio/light/tsl2583.c
index 5694610da1ca..c7daa2fcecf3 100644
--- a/drivers/staging/iio/light/tsl2583.c
+++ b/drivers/staging/iio/light/tsl2583.c
@@ -27,6 +27,7 @@
 #include <linux/mutex.h>
 #include <linux/unistd.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 #include "../iio.h"
 
 #define TSL258X_MAX_DEVICE_REGS		32
@@ -68,7 +69,7 @@ enum {
 	TSL258X_CHIP_UNKNOWN = 0,
 	TSL258X_CHIP_WORKING = 1,
 	TSL258X_CHIP_SUSPENDED = 2
-} TSL258X_CHIP_WORKING_STATUS;
+};
 
 /* Per-device data */
 struct taos_als_info {
@@ -87,7 +88,6 @@ struct taos_settings {
 struct tsl2583_chip {
 	struct mutex als_mutex;
 	struct i2c_client *client;
-	struct iio_dev *iio_dev;
 	struct taos_als_info als_cur_info;
 	struct taos_settings taos_settings;
 	int als_time_scale;
@@ -114,7 +114,7 @@ struct taos_lux {
 /* This structure is intentionally large to accommodate updates via sysfs. */
 /* Sized to 11 = max 10 segments + 1 termination segment */
 /* Assumption is is one and only one type of glass used  */
-struct taos_lux taos_device_lux[11] = {
+static struct taos_lux taos_device_lux[11] = {
 	{  9830,  8520, 15729 },
 	{ 12452, 10807, 23344 },
 	{ 14746,  6383, 11705 },
@@ -159,8 +159,7 @@ static void taos_defaults(struct tsl2583_chip *chip)
 static int
 taos_i2c_read(struct i2c_client *client, u8 reg, u8 *val, unsigned int len)
 {
-	int ret;
-	int i;
+	int i, ret;
 
 	for (i = 0; i < len; i++) {
 		/* select register to write */
@@ -191,47 +190,47 @@ taos_i2c_read(struct i2c_client *client, u8 reg, u8 *val, unsigned int len)
  * the array are then used along with the time scale factor array values, to
  * calculate the lux.
  */
-static int taos_get_lux(struct i2c_client *client)
+static int taos_get_lux(struct iio_dev *indio_dev)
 {
 	u16 ch0, ch1; /* separated ch0/ch1 data from device */
 	u32 lux; /* raw lux calculated from device data */
 	u32 ratio;
 	u8 buf[5];
 	struct taos_lux *p;
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	int i, ret;
 	u32 ch0lux = 0;
 	u32 ch1lux = 0;
 
 	if (mutex_trylock(&chip->als_mutex) == 0) {
-		dev_info(&client->dev, "taos_get_lux device is busy\n");
+		dev_info(&chip->client->dev, "taos_get_lux device is busy\n");
 		return chip->als_cur_info.lux; /* busy, so return LAST VALUE */
 	}
 
 	if (chip->taos_chip_status != TSL258X_CHIP_WORKING) {
 		/* device is not enabled */
-		dev_err(&client->dev, "taos_get_lux device is not enabled\n");
+		dev_err(&chip->client->dev, "taos_get_lux device is not enabled\n");
 		ret = -EBUSY ;
 		goto out_unlock;
 	}
 
-	ret = taos_i2c_read(client, (TSL258X_CMD_REG), &buf[0], 1);
+	ret = taos_i2c_read(chip->client, (TSL258X_CMD_REG), &buf[0], 1);
 	if (ret < 0) {
-		dev_err(&client->dev, "taos_get_lux failed to read CMD_REG\n");
+		dev_err(&chip->client->dev, "taos_get_lux failed to read CMD_REG\n");
 		goto out_unlock;
 	}
 	/* is data new & valid */
 	if (!(buf[0] & TSL258X_STA_ADC_INTR)) {
-		dev_err(&client->dev, "taos_get_lux data not valid\n");
+		dev_err(&chip->client->dev, "taos_get_lux data not valid\n");
 		ret = chip->als_cur_info.lux; /* return LAST VALUE */
 		goto out_unlock;
 	}
 
 	for (i = 0; i < 4; i++) {
 		int reg = TSL258X_CMD_REG | (TSL258X_ALS_CHAN0LO + i);
-		ret = taos_i2c_read(client, reg, &buf[i], 1);
+		ret = taos_i2c_read(chip->client, reg, &buf[i], 1);
 		if (ret < 0) {
-			dev_err(&client->dev, "taos_get_lux failed to read"
+			dev_err(&chip->client->dev, "taos_get_lux failed to read"
 				" register %x\n", reg);
 			goto out_unlock;
 		}
@@ -239,11 +238,12 @@ static int taos_get_lux(struct i2c_client *client)
 
 	/* clear status, really interrupt status (interrupts are off), but
 	 * we use the bit anyway - don't forget 0x80 - this is a command*/
-	ret = i2c_smbus_write_byte(client,
-	(TSL258X_CMD_REG | TSL258X_CMD_SPL_FN | TSL258X_CMD_ALS_INT_CLR));
+	ret = i2c_smbus_write_byte(chip->client,
+				   (TSL258X_CMD_REG | TSL258X_CMD_SPL_FN |
+				    TSL258X_CMD_ALS_INT_CLR));
 
 	if (ret < 0) {
-		dev_err(&client->dev,
+		dev_err(&chip->client->dev,
 			"taos_i2c_write_command failed in taos_get_lux, err = %d\n",
 			ret);
 		goto out_unlock; /* have no data, so return failure */
@@ -285,7 +285,7 @@ static int taos_get_lux(struct i2c_client *client)
 
 	/* note: lux is 31 bit max at this point */
 	if (ch1lux > ch0lux) {
-		dev_dbg(&client->dev, "No Data - Return last value\n");
+		dev_dbg(&chip->client->dev, "No Data - Return last value\n");
 		ret = chip->als_cur_info.lux = 0;
 		goto out_unlock;
 	}
@@ -319,54 +319,56 @@ out_unlock:
  * to derive actual lux).
  * Return updated gain_trim value.
  */
-int taos_als_calibrate(struct i2c_client *client)
+static int taos_als_calibrate(struct iio_dev *indio_dev)
 {
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	u8 reg_val;
 	unsigned int gain_trim_val;
 	int ret;
 	int lux_val;
 
-	ret = i2c_smbus_write_byte(client, (TSL258X_CMD_REG | TSL258X_CNTRL));
+	ret = i2c_smbus_write_byte(chip->client,
+				   (TSL258X_CMD_REG | TSL258X_CNTRL));
 	if (ret < 0) {
-		dev_err(&client->dev,
+		dev_err(&chip->client->dev,
 			"taos_als_calibrate failed to reach the CNTRL register, ret=%d\n",
 			ret);
 		return ret;
 	}
 
-	reg_val = i2c_smbus_read_byte(client);
+	reg_val = i2c_smbus_read_byte(chip->client);
 	if ((reg_val & (TSL258X_CNTL_ADC_ENBL | TSL258X_CNTL_PWR_ON))
 			!= (TSL258X_CNTL_ADC_ENBL | TSL258X_CNTL_PWR_ON)) {
-		dev_err(&client->dev,
+		dev_err(&chip->client->dev,
 			"taos_als_calibrate failed: device not powered on with ADC enabled\n");
 		return -1;
 	}
 
-	ret = i2c_smbus_write_byte(client, (TSL258X_CMD_REG | TSL258X_CNTRL));
+	ret = i2c_smbus_write_byte(chip->client,
+				   (TSL258X_CMD_REG | TSL258X_CNTRL));
 	if (ret < 0) {
-		dev_err(&client->dev,
+		dev_err(&chip->client->dev,
 			"taos_als_calibrate failed to reach the STATUS register, ret=%d\n",
 			ret);
 		return ret;
 	}
-	reg_val = i2c_smbus_read_byte(client);
+	reg_val = i2c_smbus_read_byte(chip->client);
 
 	if ((reg_val & TSL258X_STA_ADC_VALID) != TSL258X_STA_ADC_VALID) {
-		dev_err(&client->dev,
+		dev_err(&chip->client->dev,
 			"taos_als_calibrate failed: STATUS - ADC not valid.\n");
 		return -ENODATA;
 	}
-	lux_val = taos_get_lux(client);
+	lux_val = taos_get_lux(indio_dev);
 	if (lux_val < 0) {
-		dev_err(&client->dev, "taos_als_calibrate failed to get lux\n");
+		dev_err(&chip->client->dev, "taos_als_calibrate failed to get lux\n");
 		return lux_val;
 	}
 	gain_trim_val = (unsigned int) (((chip->taos_settings.als_cal_target)
 			* chip->taos_settings.als_gain_trim) / lux_val);
 
 	if ((gain_trim_val < 250) || (gain_trim_val > 4000)) {
-		dev_err(&client->dev,
+		dev_err(&chip->client->dev,
 			"taos_als_calibrate failed: trim_val of %d is out of range\n",
 			gain_trim_val);
 		return -ENODATA;
@@ -380,21 +382,21 @@ int taos_als_calibrate(struct i2c_client *client)
  * Turn the device on.
  * Configuration must be set before calling this function.
  */
-static int taos_chip_on(struct i2c_client *client)
+static int taos_chip_on(struct iio_dev *indio_dev)
 {
 	int i;
-	int ret = 0;
+	int ret;
 	u8 *uP;
 	u8 utmp;
 	int als_count;
 	int als_time;
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 
 	/* and make sure we're not already on */
 	if (chip->taos_chip_status == TSL258X_CHIP_WORKING) {
 		/* if forcing a register update - turn off, then on */
-		dev_info(&client->dev, "device is already enabled\n");
-		return   -EINVAL;
+		dev_info(&chip->client->dev, "device is already enabled\n");
+		return -EINVAL;
 	}
 
 	/* determine als integration regster */
@@ -416,20 +418,21 @@ static int taos_chip_on(struct i2c_client *client)
 	/* TSL258x Specific power-on / adc enable sequence
 	 * Power on the device 1st. */
 	utmp = TSL258X_CNTL_PWR_ON;
-	ret = i2c_smbus_write_byte_data(client,
-		TSL258X_CMD_REG | TSL258X_CNTRL, utmp);
+	ret = i2c_smbus_write_byte_data(chip->client,
+					TSL258X_CMD_REG | TSL258X_CNTRL, utmp);
 	if (ret < 0) {
-		dev_err(&client->dev, "taos_chip_on failed on CNTRL reg.\n");
+		dev_err(&chip->client->dev, "taos_chip_on failed on CNTRL reg.\n");
 		return -1;
 	}
 
 	/* Use the following shadow copy for our delay before enabling ADC.
 	 * Write all the registers. */
 	for (i = 0, uP = chip->taos_config; i < TSL258X_REG_MAX; i++) {
-		ret = i2c_smbus_write_byte_data(client, TSL258X_CMD_REG + i,
+		ret = i2c_smbus_write_byte_data(chip->client,
+						TSL258X_CMD_REG + i,
 						*uP++);
 		if (ret < 0) {
-			dev_err(&client->dev,
+			dev_err(&chip->client->dev,
 				"taos_chip_on failed on reg %d.\n", i);
 			return -1;
 		}
@@ -439,10 +442,11 @@ static int taos_chip_on(struct i2c_client *client)
 	/* NOW enable the ADC
 	 * initialize the desired mode of operation */
 	utmp = TSL258X_CNTL_PWR_ON | TSL258X_CNTL_ADC_ENBL;
-	ret = i2c_smbus_write_byte_data(client, TSL258X_CMD_REG | TSL258X_CNTRL,
+	ret = i2c_smbus_write_byte_data(chip->client,
+					TSL258X_CMD_REG | TSL258X_CNTRL,
 					utmp);
 	if (ret < 0) {
-		dev_err(&client->dev, "taos_chip_on failed on 2nd CTRL reg.\n");
+		dev_err(&chip->client->dev, "taos_chip_on failed on 2nd CTRL reg.\n");
 		return -1;
 	}
 	chip->taos_chip_status = TSL258X_CHIP_WORKING;
@@ -450,33 +454,26 @@ static int taos_chip_on(struct i2c_client *client)
 	return ret;
 }
 
-static int taos_chip_off(struct i2c_client *client)
+static int taos_chip_off(struct iio_dev *indio_dev)
 {
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	int ret;
 
 	/* turn device off */
 	chip->taos_chip_status = TSL258X_CHIP_SUSPENDED;
-	ret = i2c_smbus_write_byte_data(client, TSL258X_CMD_REG | TSL258X_CNTRL,
+	ret = i2c_smbus_write_byte_data(chip->client,
+					TSL258X_CMD_REG | TSL258X_CNTRL,
 					0x00);
 	return ret;
 }
 
 /* Sysfs Interface Functions */
-static ssize_t taos_device_id(struct device *dev,
-struct device_attribute *attr, char *buf)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
-
-	return sprintf(buf, "%s\n", chip->client->name);
-}
 
 static ssize_t taos_power_state_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 
 	return sprintf(buf, "%d\n", chip->taos_chip_status);
 }
@@ -485,16 +482,15 @@ static ssize_t taos_power_state_store(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
 	unsigned long value;
 
 	if (strict_strtoul(buf, 0, &value))
 		return -EINVAL;
 
 	if (value == 0)
-		taos_chip_off(chip->client);
+		taos_chip_off(indio_dev);
 	else
-		taos_chip_on(chip->client);
+		taos_chip_on(indio_dev);
 
 	return len;
 }
@@ -503,7 +499,7 @@ static ssize_t taos_gain_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	char gain[4] = {0};
 
 	switch (chip->taos_settings.als_gain) {
@@ -528,7 +524,7 @@ static ssize_t taos_gain_store(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	unsigned long value;
 
 	if (strict_strtoul(buf, 0, &value))
@@ -565,7 +561,7 @@ static ssize_t taos_als_time_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 
 	return sprintf(buf, "%d\n", chip->taos_settings.als_time);
 }
@@ -574,7 +570,7 @@ static ssize_t taos_als_time_store(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	unsigned long value;
 
 	if (strict_strtoul(buf, 0, &value))
@@ -586,7 +582,7 @@ static ssize_t taos_als_time_store(struct device *dev,
 	if (value % 50)
 		return -EINVAL;
 
-	 chip->taos_settings.als_time = value;
+	chip->taos_settings.als_time = value;
 
 	return len;
 }
@@ -602,7 +598,7 @@ static ssize_t taos_als_trim_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 
 	return sprintf(buf, "%d\n", chip->taos_settings.als_gain_trim);
 }
@@ -611,7 +607,7 @@ static ssize_t taos_als_trim_store(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	unsigned long value;
 
 	if (strict_strtoul(buf, 0, &value))
@@ -627,7 +623,7 @@ static ssize_t taos_als_cal_target_show(struct device *dev,
 	struct device_attribute *attr, char *buf)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 
 	return sprintf(buf, "%d\n", chip->taos_settings.als_cal_target);
 }
@@ -636,7 +632,7 @@ static ssize_t taos_als_cal_target_store(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	unsigned long value;
 
 	if (strict_strtoul(buf, 0, &value))
@@ -651,27 +647,26 @@ static ssize_t taos_als_cal_target_store(struct device *dev,
 static ssize_t taos_lux_show(struct device *dev, struct device_attribute *attr,
 	char *buf)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
-	int lux;
+	int ret;
 
-	lux = taos_get_lux(chip->client);
+	ret = taos_get_lux(dev_get_drvdata(dev));
+	if (ret < 0)
+		return ret;
 
-	return sprintf(buf, "%d\n", lux);
+	return sprintf(buf, "%d\n", ret);
 }
 
 static ssize_t taos_do_calibrate(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
 	unsigned long value;
 
 	if (strict_strtoul(buf, 0, &value))
 		return -EINVAL;
 
 	if (value == 1)
-		taos_als_calibrate(chip->client);
+		taos_als_calibrate(indio_dev);
 
 	return len;
 }
@@ -703,8 +698,8 @@ static ssize_t taos_luxtable_store(struct device *dev,
 	struct device_attribute *attr, const char *buf, size_t len)
 {
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct tsl2583_chip *chip = indio_dev->dev_data;
-	int value[ARRAY_SIZE(taos_device_lux)];
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
+	int value[ARRAY_SIZE(taos_device_lux)*3 + 1];
 	int n;
 
 	get_options(buf, ARRAY_SIZE(value), value);
@@ -725,18 +720,17 @@ static ssize_t taos_luxtable_store(struct device *dev,
 	}
 
 	if (chip->taos_chip_status == TSL258X_CHIP_WORKING)
-		taos_chip_off(chip->client);
+		taos_chip_off(indio_dev);
 
 	/* Zero out the table */
 	memset(taos_device_lux, 0, sizeof(taos_device_lux));
 	memcpy(taos_device_lux, &value[1], (value[0] * 4));
 
-	taos_chip_on(chip->client);
+	taos_chip_on(indio_dev);
 
 	return len;
 }
 
-static DEVICE_ATTR(name, S_IRUGO, taos_device_id, NULL);
 static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR,
 		taos_power_state_show, taos_power_state_store);
 
@@ -762,7 +756,6 @@ static DEVICE_ATTR(illuminance0_lux_table, S_IRUGO | S_IWUSR,
 		taos_luxtable_show, taos_luxtable_store);
 
 static struct attribute *sysfs_attrs_ctrl[] = {
-	&dev_attr_name.attr,
 	&dev_attr_power_state.attr,
 	&dev_attr_illuminance0_calibscale.attr,			/* Gain  */
 	&dev_attr_illuminance0_calibscale_available.attr,
@@ -798,9 +791,10 @@ static const struct iio_info tsl2583_info = {
 static int __devinit taos_probe(struct i2c_client *clientp,
 		      const struct i2c_device_id *idp)
 {
-	int i, ret = 0;
+	int i, ret;
 	unsigned char buf[TSL258X_MAX_DEVICE_REGS];
-	static struct tsl2583_chip *chip;
+	struct tsl2583_chip *chip;
+	struct iio_dev *indio_dev;
 
 	if (!i2c_check_functionality(clientp->adapter,
 		I2C_FUNC_SMBUS_BYTE_DATA)) {
@@ -810,12 +804,15 @@ static int __devinit taos_probe(struct i2c_client *clientp,
 		return -EOPNOTSUPP;
 	}
 
-	chip = kzalloc(sizeof(struct tsl2583_chip), GFP_KERNEL);
-	if (!chip)
-		return -ENOMEM;
-
+	indio_dev = iio_allocate_device(sizeof(*chip));
+	if (indio_dev == NULL) {
+		ret = -ENOMEM;
+		dev_err(&clientp->dev, "iio allocation failed\n");
+		goto fail1;
+	}
+	chip = iio_priv(indio_dev);
 	chip->client = clientp;
-	i2c_set_clientdata(clientp, chip);
+	i2c_set_clientdata(clientp, indio_dev);
 
 	mutex_init(&chip->als_mutex);
 	chip->taos_chip_status = TSL258X_CHIP_UNKNOWN;
@@ -827,14 +824,14 @@ static int __devinit taos_probe(struct i2c_client *clientp,
 		if (ret < 0) {
 			dev_err(&clientp->dev, "i2c_smbus_write_bytes() to cmd "
 				"reg failed in taos_probe(), err = %d\n", ret);
-			goto fail1;
+			goto fail2;
 		}
 		ret = i2c_smbus_read_byte(clientp);
 		if (ret < 0) {
 			dev_err(&clientp->dev, "i2c_smbus_read_byte from "
 				"reg failed in taos_probe(), err = %d\n", ret);
 
-			goto fail1;
+			goto fail2;
 		}
 		buf[i] = ret;
 	}
@@ -842,58 +839,50 @@ static int __devinit taos_probe(struct i2c_client *clientp,
 	if (!taos_tsl258x_device(buf)) {
 		dev_info(&clientp->dev, "i2c device found but does not match "
 			"expected id in taos_probe()\n");
-		goto fail1;
+		goto fail2;
 	}
 
 	ret = i2c_smbus_write_byte(clientp, (TSL258X_CMD_REG | TSL258X_CNTRL));
 	if (ret < 0) {
 		dev_err(&clientp->dev, "i2c_smbus_write_byte() to cmd reg "
 			"failed in taos_probe(), err = %d\n", ret);
-		goto fail1;
-	}
-
-	chip->iio_dev = iio_allocate_device(0);
-	if (!chip->iio_dev) {
-		ret = -ENOMEM;
-		dev_err(&clientp->dev, "iio allocation failed\n");
-		goto fail1;
+		goto fail2;
 	}
 
-	chip->iio_dev->info = &tsl2583_info;
-	chip->iio_dev->dev.parent = &clientp->dev;
-	chip->iio_dev->dev_data = (void *)(chip);
-	chip->iio_dev->modes = INDIO_DIRECT_MODE;
-	ret = iio_device_register(chip->iio_dev);
+	indio_dev->info = &tsl2583_info;
+	indio_dev->dev.parent = &clientp->dev;
+	indio_dev->modes = INDIO_DIRECT_MODE;
+	indio_dev->name = chip->client->name;
+	ret = iio_device_register(indio_dev);
 	if (ret) {
 		dev_err(&clientp->dev, "iio registration failed\n");
-		goto fail1;
+		goto fail2;
 	}
 
 	/* Load up the V2 defaults (these are hard coded defaults for now) */
 	taos_defaults(chip);
 
 	/* Make sure the chip is on */
-	taos_chip_on(clientp);
+	taos_chip_on(indio_dev);
 
 	dev_info(&clientp->dev, "Light sensor found.\n");
-
 	return 0;
-
 fail1:
-	kfree(chip);
-
+	iio_free_device(indio_dev);
+fail2:
 	return ret;
 }
 
 static int taos_suspend(struct i2c_client *client, pm_message_t state)
 {
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	int ret = 0;
 
 	mutex_lock(&chip->als_mutex);
 
 	if (chip->taos_chip_status == TSL258X_CHIP_WORKING) {
-		ret = taos_chip_off(client);
+		ret = taos_chip_off(indio_dev);
 		chip->taos_chip_status = TSL258X_CHIP_SUSPENDED;
 	}
 
@@ -903,13 +892,14 @@ static int taos_suspend(struct i2c_client *client, pm_message_t state)
 
 static int taos_resume(struct i2c_client *client)
 {
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
+	struct iio_dev *indio_dev = i2c_get_clientdata(client);
+	struct tsl2583_chip *chip = iio_priv(indio_dev);
 	int ret = 0;
 
 	mutex_lock(&chip->als_mutex);
 
 	if (chip->taos_chip_status == TSL258X_CHIP_SUSPENDED)
-		ret = taos_chip_on(client);
+		ret = taos_chip_on(indio_dev);
 
 	mutex_unlock(&chip->als_mutex);
 	return ret;
@@ -918,11 +908,8 @@ static int taos_resume(struct i2c_client *client)
 
 static int __devexit taos_remove(struct i2c_client *client)
 {
-	struct tsl2583_chip *chip = i2c_get_clientdata(client);
-
-	iio_device_unregister(chip->iio_dev);
+	iio_device_unregister(i2c_get_clientdata(client));
 
-	kfree(chip);
 	return 0;
 }
 
diff --git a/drivers/staging/iio/magnetometer/ak8975.c b/drivers/staging/iio/magnetometer/ak8975.c
index 33919e87e7ce..a17fa9f6a30e 100644
--- a/drivers/staging/iio/magnetometer/ak8975.c
+++ b/drivers/staging/iio/magnetometer/ak8975.c
@@ -31,7 +31,6 @@
 #include <linux/gpio.h>
 
 #include "../iio.h"
-#include "magnet.h"
 
 /*
  * Register definitions, as well as various shifts and masks to get at the
@@ -93,38 +92,28 @@ struct ak8975_data {
 	struct mutex		lock;
 	u8			asa[3];
 	long			raw_to_gauss[3];
-	unsigned long		mode;
+	bool			mode;
 	u8			reg_cache[AK8975_MAX_REGS];
 	int			eoc_gpio;
 	int			eoc_irq;
 };
 
+static const int ak8975_index_to_reg[] = {
+	AK8975_REG_HXL, AK8975_REG_HYL, AK8975_REG_HZL,
+};
+
 /*
  * Helper function to write to the I2C device's registers.
  */
 static int ak8975_write_data(struct i2c_client *client,
 			     u8 reg, u8 val, u8 mask, u8 shift)
 {
-	u8 regval;
-	struct i2c_msg msg;
-	u8 w_data[2];
-	int ret = 0;
-
 	struct ak8975_data *data = i2c_get_clientdata(client);
+	u8 regval;
+	int ret;
 
-	regval = data->reg_cache[reg];
-	regval &= ~mask;
-	regval |= val << shift;
-
-	w_data[0] = reg;
-	w_data[1] = regval;
-
-	msg.addr = client->addr;
-	msg.flags = 0;
-	msg.len = 2;
-	msg.buf = w_data;
-
-	ret = i2c_transfer(client->adapter, &msg, 1);
+	regval = (data->reg_cache[reg] & ~mask) | (val << shift);
+	ret = i2c_smbus_write_byte_data(client, reg, regval);
 	if (ret < 0) {
 		dev_err(&client->dev, "Write to device fails status %x\n", ret);
 		return ret;
@@ -140,21 +129,20 @@ static int ak8975_write_data(struct i2c_client *client,
 static int ak8975_read_data(struct i2c_client *client,
 			    u8 reg, u8 length, u8 *buffer)
 {
-	struct i2c_msg msg[2];
-	u8 w_data[2];
 	int ret;
-
-	w_data[0] = reg;
-
-	msg[0].addr = client->addr;
-	msg[0].flags = I2C_M_NOSTART;	/* set repeated start and write */
-	msg[0].len = 1;
-	msg[0].buf = w_data;
-
-	msg[1].addr = client->addr;
-	msg[1].flags = I2C_M_RD;
-	msg[1].len = length;
-	msg[1].buf = buffer;
+	struct i2c_msg msg[2] = {
+		{
+			.addr = client->addr,
+			.flags = I2C_M_NOSTART,
+			.len = 1,
+			.buf = &reg,
+		}, {
+			.addr = client->addr,
+			.flags = I2C_M_RD,
+			.len = length,
+			.buf = buffer,
+		}
+	};
 
 	ret = i2c_transfer(client->adapter, msg, 2);
 	if (ret < 0) {
@@ -204,8 +192,41 @@ static int ak8975_setup(struct i2c_client *client)
 		return ret;
 	}
 
-	/* Precalculate scale factor for each axis and
-	   store in the device data. */
+/*
+ * Precalculate scale factor (in Gauss units) for each axis and
+ * store in the device data.
+ *
+ * This scale factor is axis-dependent, and is derived from 3 calibration
+ * factors ASA(x), ASA(y), and ASA(z).
+ *
+ * These ASA values are read from the sensor device at start of day, and
+ * cached in the device context struct.
+ *
+ * Adjusting the flux value with the sensitivity adjustment value should be
+ * done via the following formula:
+ *
+ * Hadj = H * ( ( ( (ASA-128)*0.5 ) / 128 ) + 1 )
+ *
+ * where H is the raw value, ASA is the sensitivity adjustment, and Hadj
+ * is the resultant adjusted value.
+ *
+ * We reduce the formula to:
+ *
+ * Hadj = H * (ASA + 128) / 256
+ *
+ * H is in the range of -4096 to 4095.  The magnetometer has a range of
+ * +-1229uT.  To go from the raw value to uT is:
+ *
+ * HuT = H * 1229/4096, or roughly, 3/10.
+ *
+ * Since 1uT = 100 gauss, our final scale factor becomes:
+ *
+ * Hadj = H * ((ASA + 128) / 256) * 3/10 * 100
+ * Hadj = H * ((ASA + 128) * 30 / 256
+ *
+ * Since ASA doesn't change, we cache the resultant scale factor into the
+ * device context in ak8975_setup().
+ */
 	data->raw_to_gauss[0] = ((data->asa[0] + 128) * 30) >> 8;
 	data->raw_to_gauss[1] = ((data->asa[1] + 128) * 30) >> 8;
 	data->raw_to_gauss[2] = ((data->asa[2] + 128) * 30) >> 8;
@@ -222,7 +243,7 @@ static ssize_t show_mode(struct device *dev, struct device_attribute *devattr,
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ak8975_data *data = iio_priv(indio_dev);
 
-	return sprintf(buf, "%lu\n", data->mode);
+	return sprintf(buf, "%u\n", data->mode);
 }
 
 /*
@@ -235,26 +256,22 @@ static ssize_t store_mode(struct device *dev, struct device_attribute *devattr,
 	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ak8975_data *data = iio_priv(indio_dev);
 	struct i2c_client *client = data->client;
-	unsigned long oval;
+	bool value;
 	int ret;
 
 	/* Convert mode string and do some basic sanity checking on it.
 	   only 0 or 1 are valid. */
-	if (strict_strtoul(buf, 10, &oval))
-		return -EINVAL;
-
-	if (oval > 1) {
-		dev_err(dev, "mode value is not supported\n");
-		return -EINVAL;
-	}
+	ret = strtobool(buf, &value);
+	if (ret < 0)
+		return ret;
 
 	mutex_lock(&data->lock);
 
 	/* Write the mode to the device. */
-	if (data->mode != oval) {
+	if (data->mode != value) {
 		ret = ak8975_write_data(client,
 					AK8975_REG_CNTL,
-					(u8)oval,
+					(u8)value,
 					AK8975_REG_CNTL_MODE_MASK,
 					AK8975_REG_CNTL_MODE_SHIFT);
 
@@ -263,7 +280,7 @@ static ssize_t store_mode(struct device *dev, struct device_attribute *devattr,
 			mutex_unlock(&data->lock);
 			return ret;
 		}
-		data->mode = oval;
+		data->mode = value;
 	}
 
 	mutex_unlock(&data->lock);
@@ -271,50 +288,6 @@ static ssize_t store_mode(struct device *dev, struct device_attribute *devattr,
 	return count;
 }
 
-/*
- * Emits the scale factor to bring the raw value into Gauss units.
- *
- * This scale factor is axis-dependent, and is derived from 3 calibration
- * factors ASA(x), ASA(y), and ASA(z).
- *
- * These ASA values are read from the sensor device at start of day, and
- * cached in the device context struct.
- *
- * Adjusting the flux value with the sensitivity adjustment value should be
- * done via the following formula:
- *
- * Hadj = H * ( ( ( (ASA-128)*0.5 ) / 128 ) + 1 )
- *
- * where H is the raw value, ASA is the sensitivity adjustment, and Hadj
- * is the resultant adjusted value.
- *
- * We reduce the formula to:
- *
- * Hadj = H * (ASA + 128) / 256
- *
- * H is in the range of -4096 to 4095.  The magnetometer has a range of
- * +-1229uT.  To go from the raw value to uT is:
- *
- * HuT = H * 1229/4096, or roughly, 3/10.
- *
- * Since 1uT = 100 gauss, our final scale factor becomes:
- *
- * Hadj = H * ((ASA + 128) / 256) * 3/10 * 100
- * Hadj = H * ((ASA + 128) * 30 / 256
- *
- * Since ASA doesn't change, we cache the resultant scale factor into the
- * device context in ak8975_setup().
- */
-static ssize_t show_scale(struct device *dev, struct device_attribute *devattr,
-			  char *buf)
-{
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
-	struct ak8975_data *data = iio_priv(indio_dev);
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(devattr);
-
-	return sprintf(buf, "%ld\n", data->raw_to_gauss[this_attr->address]);
-}
-
 static int wait_conversion_complete_gpio(struct ak8975_data *data)
 {
 	struct i2c_client *client = data->client;
@@ -371,13 +344,10 @@ static int wait_conversion_complete_polled(struct ak8975_data *data)
 /*
  * Emits the raw flux value for the x, y, or z axis.
  */
-static ssize_t show_raw(struct device *dev, struct device_attribute *devattr,
-			char *buf)
+static int ak8975_read_axis(struct iio_dev *indio_dev, int index, int *val)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct ak8975_data *data = iio_priv(indio_dev);
 	struct i2c_client *client = data->client;
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(devattr);
 	u16 meas_reg;
 	s16 raw;
 	u8 read_status;
@@ -429,7 +399,8 @@ static ssize_t show_raw(struct device *dev, struct device_attribute *devattr,
 
 	/* Read the flux value from the appropriate register
 	   (the register is specified in the iio device attributes). */
-	ret = ak8975_read_data(client, this_attr->address, 2, (u8 *)&meas_reg);
+	ret = ak8975_read_data(client, ak8975_index_to_reg[index],
+			       2, (u8 *)&meas_reg);
 	if (ret < 0) {
 		dev_err(&client->dev, "Read axis data fails\n");
 		goto exit;
@@ -442,30 +413,48 @@ static ssize_t show_raw(struct device *dev, struct device_attribute *devattr,
 
 	/* Clamp to valid range. */
 	raw = clamp_t(s16, raw, -4096, 4095);
-
-	return sprintf(buf, "%d\n", raw);
+	*val = raw;
+	return IIO_VAL_INT;
 
 exit:
 	mutex_unlock(&data->lock);
 	return ret;
 }
 
+static int ak8975_read_raw(struct iio_dev *indio_dev,
+			   struct iio_chan_spec const *chan,
+			   int *val, int *val2,
+			   long mask)
+{
+	struct ak8975_data *data = iio_priv(indio_dev);
+
+	switch (mask) {
+	case 0:
+		return ak8975_read_axis(indio_dev, chan->address, val);
+	case (1 << IIO_CHAN_INFO_SCALE_SEPARATE):
+		*val = data->raw_to_gauss[chan->address];
+		return IIO_VAL_INT;
+	}
+	return -EINVAL;
+}
+
+#define AK8975_CHANNEL(axis, index)					\
+	{								\
+		.type = IIO_MAGN,					\
+		.modified = 1,						\
+		.channel2 = IIO_MOD_##axis,				\
+		.info_mask = (1 << IIO_CHAN_INFO_SCALE_SEPARATE),	\
+		.address = index,					\
+	}
+
+static const struct iio_chan_spec ak8975_channels[] = {
+	AK8975_CHANNEL(X, 0), AK8975_CHANNEL(Y, 1), AK8975_CHANNEL(Z, 2),
+};
+
 static IIO_DEVICE_ATTR(mode, S_IRUGO | S_IWUSR, show_mode, store_mode, 0);
-static IIO_DEV_ATTR_MAGN_X_SCALE(S_IRUGO, show_scale, NULL, 0);
-static IIO_DEV_ATTR_MAGN_Y_SCALE(S_IRUGO, show_scale, NULL, 1);
-static IIO_DEV_ATTR_MAGN_Z_SCALE(S_IRUGO, show_scale, NULL, 2);
-static IIO_DEV_ATTR_MAGN_X(show_raw, AK8975_REG_HXL);
-static IIO_DEV_ATTR_MAGN_Y(show_raw, AK8975_REG_HYL);
-static IIO_DEV_ATTR_MAGN_Z(show_raw, AK8975_REG_HZL);
 
 static struct attribute *ak8975_attr[] = {
 	&iio_dev_attr_mode.dev_attr.attr,
-	&iio_dev_attr_magn_x_scale.dev_attr.attr,
-	&iio_dev_attr_magn_y_scale.dev_attr.attr,
-	&iio_dev_attr_magn_z_scale.dev_attr.attr,
-	&iio_dev_attr_magn_x_raw.dev_attr.attr,
-	&iio_dev_attr_magn_y_raw.dev_attr.attr,
-	&iio_dev_attr_magn_z_raw.dev_attr.attr,
 	NULL
 };
 
@@ -475,6 +464,7 @@ static struct attribute_group ak8975_attr_group = {
 
 static const struct iio_info ak8975_info = {
 	.attrs = &ak8975_attr_group,
+	.read_raw = &ak8975_read_raw,
 	.driver_module = THIS_MODULE,
 };
 
@@ -530,6 +520,8 @@ static int ak8975_probe(struct i2c_client *client,
 	data->eoc_irq = client->irq;
 	data->eoc_gpio = eoc_gpio;
 	indio_dev->dev.parent = &client->dev;
+	indio_dev->channels = ak8975_channels;
+	indio_dev->num_channels = ARRAY_SIZE(ak8975_channels);
 	indio_dev->info = &ak8975_info;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 
diff --git a/drivers/staging/iio/magnetometer/hmc5843.c b/drivers/staging/iio/magnetometer/hmc5843.c
index b44c273a91a8..1bb71864d586 100644
--- a/drivers/staging/iio/magnetometer/hmc5843.c
+++ b/drivers/staging/iio/magnetometer/hmc5843.c
@@ -24,7 +24,6 @@
 #include <linux/types.h>
 #include "../iio.h"
 #include "../sysfs.h"
-#include "magnet.h"
 
 #define HMC5843_I2C_ADDRESS			0x1E
 
@@ -62,9 +61,9 @@
 /*
  * Device status
  */
-#define	DATA_READY  				0x01
-#define	DATA_OUTPUT_LOCK  			0x02
-#define	VOLTAGE_REGULATOR_ENABLED  		0x04
+#define	DATA_READY				0x01
+#define	DATA_OUTPUT_LOCK			0x02
+#define	VOLTAGE_REGULATOR_ENABLED		0x04
 
 /*
  * Mode register configuration
@@ -89,22 +88,16 @@
 /*
  * Device Configutration
  */
-#define	CONF_NORMAL  				0x00
+#define	CONF_NORMAL				0x00
 #define	CONF_POSITIVE_BIAS			0x01
 #define	CONF_NEGATIVE_BIAS			0x02
 #define	CONF_NOT_USED				0x03
 #define	MEAS_CONF_MASK				0x03
 
-static const char *regval_to_scale[] = {
-	"0.0000006173",
-	"0.0000007692",
-	"0.0000010309",
-	"0.0000012821",
-	"0.0000018868",
-	"0.0000021739",
-	"0.0000025641",
-	"0.0000035714",
+static int hmc5843_regval_to_nanoscale[] = {
+	6173, 7692, 10309, 12821, 18868, 21739, 25641, 35714
 };
+
 static const int regval_to_input_field_mg[] = {
 	700,
 	1000,
@@ -115,7 +108,7 @@ static const int regval_to_input_field_mg[] = {
 	4500,
 	6500
 };
-static const char *regval_to_samp_freq[] = {
+static const char * const regval_to_samp_freq[] = {
 	"0.5",
 	"1",
 	"2",
@@ -150,37 +143,28 @@ static s32 hmc5843_configure(struct i2c_client *client,
 }
 
 /* Return the measurement value from the  specified channel */
-static ssize_t hmc5843_read_measurement(struct device *dev,
-		struct device_attribute *attr,
-		char *buf)
+static int hmc5843_read_measurement(struct iio_dev *indio_dev,
+				    int address,
+				    int *val)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct i2c_client *client = to_i2c_client(indio_dev->dev.parent);
-	s16 coordinate_val;
-	struct iio_dev_attr *this_attr = to_iio_dev_attr(attr);
 	struct hmc5843_data *data = iio_priv(indio_dev);
 	s32 result;
 
 	mutex_lock(&data->lock);
-
 	result = i2c_smbus_read_byte_data(client, HMC5843_STATUS_REG);
 	while (!(result & DATA_READY))
 		result = i2c_smbus_read_byte_data(client, HMC5843_STATUS_REG);
 
-	result = i2c_smbus_read_word_data(client, this_attr->address);
+	result = i2c_smbus_read_word_data(client, address);
 	mutex_unlock(&data->lock);
 	if (result < 0)
 		return -EINVAL;
 
-	coordinate_val	= (s16)swab16((u16)result);
-	return sprintf(buf, "%d\n", coordinate_val);
+	*val	= (s16)swab16((u16)result);
+	return IIO_VAL_INT;
 }
-static IIO_DEV_ATTR_MAGN_X(hmc5843_read_measurement,
-		HMC5843_DATA_OUT_X_MSB_REG);
-static IIO_DEV_ATTR_MAGN_Y(hmc5843_read_measurement,
-		HMC5843_DATA_OUT_Y_MSB_REG);
-static IIO_DEV_ATTR_MAGN_Z(hmc5843_read_measurement,
-		HMC5843_DATA_OUT_Z_MSB_REG);
+
 
 /*
  * From the datasheet
@@ -336,7 +320,7 @@ static s32 hmc5843_set_rate(struct i2c_client *client,
 	reg_val = (data->meas_conf) |  (rate << RATE_OFFSET);
 	if (rate >= RATE_NOT_USED) {
 		dev_err(&client->dev,
-			"This data output rate is not supported \n");
+			"This data output rate is not supported\n");
 		return -EINVAL;
 	}
 	return i2c_smbus_write_byte_data(client, HMC5843_CONFIG_REG_A, reg_val);
@@ -467,28 +451,46 @@ static IIO_DEVICE_ATTR(magn_range,
 			set_range,
 			HMC5843_CONFIG_REG_B);
 
-static ssize_t show_scale(struct device *dev,
-			struct device_attribute *attr,
-			char *buf)
+static int hmc5843_read_raw(struct iio_dev *indio_dev,
+			    struct iio_chan_spec const *chan,
+			    int *val, int *val2,
+			    long mask)
 {
-	struct iio_dev *indio_dev = dev_get_drvdata(dev);
 	struct hmc5843_data *data = iio_priv(indio_dev);
-	return strlen(strcpy(buf, regval_to_scale[data->range]));
+
+	switch (mask) {
+	case 0:
+		return hmc5843_read_measurement(indio_dev,
+						chan->address,
+						val);
+	case (1 << IIO_CHAN_INFO_SCALE_SHARED):
+		*val = 0;
+		*val2 = hmc5843_regval_to_nanoscale[data->range];
+		return IIO_VAL_INT_PLUS_NANO;
+	};
+	return -EINVAL;
 }
-static IIO_DEVICE_ATTR(magn_scale,
-			S_IRUGO,
-			show_scale,
-			NULL , 0);
+
+#define HMC5843_CHANNEL(axis, add)					\
+	{								\
+		.type = IIO_MAGN,					\
+		.modified = 1,						\
+		.channel2 = IIO_MOD_##axis,				\
+		.info_mask = (1 << IIO_CHAN_INFO_SCALE_SHARED),		\
+		.address = add						\
+	}
+
+static const struct iio_chan_spec hmc5843_channels[] = {
+	HMC5843_CHANNEL(X, HMC5843_DATA_OUT_X_MSB_REG),
+	HMC5843_CHANNEL(Y, HMC5843_DATA_OUT_Y_MSB_REG),
+	HMC5843_CHANNEL(Z, HMC5843_DATA_OUT_Z_MSB_REG),
+};
 
 static struct attribute *hmc5843_attributes[] = {
 	&iio_dev_attr_meas_conf.dev_attr.attr,
 	&iio_dev_attr_operating_mode.dev_attr.attr,
 	&iio_dev_attr_sampling_frequency.dev_attr.attr,
 	&iio_dev_attr_magn_range.dev_attr.attr,
-	&iio_dev_attr_magn_scale.dev_attr.attr,
-	&iio_dev_attr_magn_x_raw.dev_attr.attr,
-	&iio_dev_attr_magn_y_raw.dev_attr.attr,
-	&iio_dev_attr_magn_z_raw.dev_attr.attr,
 	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
 	NULL
 };
@@ -530,6 +532,7 @@ static void hmc5843_init_client(struct i2c_client *client)
 
 static const struct iio_info hmc5843_info = {
 	.attrs = &hmc5843_group,
+	.read_raw = &hmc5843_read_raw,
 	.driver_module = THIS_MODULE,
 };
 
@@ -558,6 +561,9 @@ static int hmc5843_probe(struct i2c_client *client,
 	hmc5843_init_client(client);
 
 	indio_dev->info = &hmc5843_info;
+	indio_dev->name = id->name;
+	indio_dev->channels = hmc5843_channels;
+	indio_dev->num_channels = ARRAY_SIZE(hmc5843_channels);
 	indio_dev->dev.parent = &client->dev;
 	indio_dev->modes = INDIO_DIRECT_MODE;
 	err = iio_device_register(indio_dev);
diff --git a/drivers/staging/iio/magnetometer/magnet.h b/drivers/staging/iio/magnetometer/magnet.h
deleted file mode 100644
index 1260eb7bd41e..000000000000
--- a/drivers/staging/iio/magnetometer/magnet.h
+++ /dev/null
@@ -1,31 +0,0 @@
-
-#include "../sysfs.h"
-
-/* Magnetometer types of attribute */
-
-#define IIO_DEV_ATTR_MAGN_X_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(magn_x_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_MAGN_Y_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(magn_y_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_MAGN_Z_OFFSET(_mode, _show, _store, _addr)	\
-	IIO_DEVICE_ATTR(magn_z_offset, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_MAGN_X_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(magn_x_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_MAGN_Y_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(magn_y_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_MAGN_Z_SCALE(_mode, _show, _store, _addr)		\
-	IIO_DEVICE_ATTR(magn_z_scale, _mode, _show, _store, _addr)
-
-#define IIO_DEV_ATTR_MAGN_X(_show, _addr)				\
-	IIO_DEVICE_ATTR(magn_x_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_MAGN_Y(_show, _addr)				\
-	IIO_DEVICE_ATTR(magn_y_raw, S_IRUGO, _show, NULL, _addr)
-
-#define IIO_DEV_ATTR_MAGN_Z(_show, _addr)				\
-	IIO_DEVICE_ATTR(magn_z_raw, S_IRUGO, _show, NULL, _addr)
diff --git a/drivers/staging/iio/meter/ade7753.c b/drivers/staging/iio/meter/ade7753.c
index 4d1bd42ff9e0..bccc5798fa5c 100644
--- a/drivers/staging/iio/meter/ade7753.c
+++ b/drivers/staging/iio/meter/ade7753.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/meter/ade7754.c b/drivers/staging/iio/meter/ade7754.c
index f4f85fd5619b..6f0f464aba38 100644
--- a/drivers/staging/iio/meter/ade7754.c
+++ b/drivers/staging/iio/meter/ade7754.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/meter/ade7758_core.c b/drivers/staging/iio/meter/ade7758_core.c
index 299b95434e20..ac0e092e49d3 100644
--- a/drivers/staging/iio/meter/ade7758_core.c
+++ b/drivers/staging/iio/meter/ade7758_core.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/meter/ade7758_ring.c b/drivers/staging/iio/meter/ade7758_ring.c
index b89b7f882e84..1e2a09643a35 100644
--- a/drivers/staging/iio/meter/ade7758_ring.c
+++ b/drivers/staging/iio/meter/ade7758_ring.c
@@ -6,23 +6,14 @@
  * Licensed under the GPL-2.
  */
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/gpio.h>
-#include <linux/workqueue.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 <asm/unaligned.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../ring_sw.h"
-#include "../accel/accel.h"
-#include "../trigger.h"
+#include "../trigger_consumer.h"
 #include "ade7758.h"
 
 /**
@@ -69,7 +60,7 @@ out:
 static irqreturn_t ade7758_trigger_handler(int irq, void *p)
 {
 	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->private_data;
+	struct iio_dev *indio_dev = pf->indio_dev;
 	struct iio_ring_buffer *ring = indio_dev->ring;
 	struct ade7758_state *st = iio_priv(indio_dev);
 	s64 dat64[2];
@@ -136,12 +127,6 @@ static const struct iio_ring_setup_ops ade7758_ring_setup_ops = {
 
 void ade7758_unconfigure_ring(struct iio_dev *indio_dev)
 {
-	/* ensure that the trigger has been detached */
-	if (indio_dev->trig) {
-		iio_put_trigger(indio_dev->trig);
-		iio_trigger_dettach_poll_func(indio_dev->trig,
-					      indio_dev->pollfunc);
-	}
 	iio_dealloc_pollfunc(indio_dev->pollfunc);
 	iio_sw_rb_free(indio_dev->ring);
 }
diff --git a/drivers/staging/iio/meter/ade7758_trigger.c b/drivers/staging/iio/meter/ade7758_trigger.c
index a5c3248151ed..392dfe302443 100644
--- a/drivers/staging/iio/meter/ade7758_trigger.c
+++ b/drivers/staging/iio/meter/ade7758_trigger.c
@@ -7,16 +7,10 @@
  */
 
 #include <linux/interrupt.h>
-#include <linux/irq.h>
-#include <linux/mutex.h>
-#include <linux/device.h>
 #include <linux/kernel.h>
-#include <linux/sysfs.h>
-#include <linux/list.h>
 #include <linux/spi/spi.h>
 
 #include "../iio.h"
-#include "../sysfs.h"
 #include "../trigger.h"
 #include "ade7758.h"
 
@@ -57,6 +51,12 @@ static int ade7758_trig_try_reen(struct iio_trigger *trig)
 	return 0;
 }
 
+static const struct iio_trigger_ops ade7758_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &ade7758_data_rdy_trigger_set_state,
+	.try_reenable = &ade7758_trig_try_reen,
+};
+
 int ade7758_probe_trigger(struct iio_dev *indio_dev)
 {
 	struct ade7758_state *st = iio_priv(indio_dev);
@@ -79,10 +79,8 @@ int ade7758_probe_trigger(struct iio_dev *indio_dev)
 		goto error_free_trig;
 
 	st->trig->dev.parent = &st->us->dev;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &ade7758_trigger_ops;
 	st->trig->private_data = indio_dev;
-	st->trig->set_trigger_state = &ade7758_data_rdy_trigger_set_state;
-	st->trig->try_reenable = &ade7758_trig_try_reen;
 	ret = iio_trigger_register(st->trig);
 
 	/* select default trigger */
diff --git a/drivers/staging/iio/meter/ade7759.c b/drivers/staging/iio/meter/ade7759.c
index a51a64cad034..31723e8e64fa 100644
--- a/drivers/staging/iio/meter/ade7759.c
+++ b/drivers/staging/iio/meter/ade7759.c
@@ -17,6 +17,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/meter/ade7854-i2c.c b/drivers/staging/iio/meter/ade7854-i2c.c
index dd7234353405..cbca3fd8fcd6 100644
--- a/drivers/staging/iio/meter/ade7854-i2c.c
+++ b/drivers/staging/iio/meter/ade7854-i2c.c
@@ -10,6 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/i2c.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "ade7854.h"
diff --git a/drivers/staging/iio/meter/ade7854-spi.c b/drivers/staging/iio/meter/ade7854-spi.c
index e0d10865590a..cfa23ba30efe 100644
--- a/drivers/staging/iio/meter/ade7854-spi.c
+++ b/drivers/staging/iio/meter/ade7854-spi.c
@@ -10,6 +10,7 @@
 #include <linux/kernel.h>
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "ade7854.h"
diff --git a/drivers/staging/iio/meter/ade7854.c b/drivers/staging/iio/meter/ade7854.c
index b82659f43bc6..bc1f83eea7c6 100644
--- a/drivers/staging/iio/meter/ade7854.c
+++ b/drivers/staging/iio/meter/ade7854.c
@@ -16,6 +16,7 @@
 #include <linux/slab.h>
 #include <linux/sysfs.h>
 #include <linux/list.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -582,7 +583,7 @@ error_unreg_dev:
 	iio_device_unregister(indio_dev);
 error_free_dev:
 	iio_free_device(indio_dev);
-error_ret:
+
 	return ret;
 }
 EXPORT_SYMBOL(ade7854_probe);
diff --git a/drivers/staging/iio/resolver/ad2s120x.c b/drivers/staging/iio/resolver/ad2s120x.c
index bed4c725f2df..fdaf0a8fcf90 100644
--- a/drivers/staging/iio/resolver/ad2s120x.c
+++ b/drivers/staging/iio/resolver/ad2s120x.c
@@ -16,6 +16,7 @@
 #include <linux/sysfs.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
index ecaf7bb790fe..f8459e8e8552 100644
--- a/drivers/staging/iio/resolver/ad2s1210.c
+++ b/drivers/staging/iio/resolver/ad2s1210.c
@@ -16,6 +16,7 @@
 #include <linux/sysfs.h>
 #include <linux/delay.h>
 #include <linux/gpio.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -639,7 +640,6 @@ static struct attribute *ad2s1210_attributes[] = {
 };
 
 static const struct attribute_group ad2s1210_attribute_group = {
-	.name = DRV_NAME,
 	.attrs = ad2s1210_attributes,
 };
 
diff --git a/drivers/staging/iio/resolver/ad2s90.c b/drivers/staging/iio/resolver/ad2s90.c
index 166e2414ac85..3739bd24951c 100644
--- a/drivers/staging/iio/resolver/ad2s90.c
+++ b/drivers/staging/iio/resolver/ad2s90.c
@@ -14,6 +14,7 @@
 #include <linux/spi/spi.h>
 #include <linux/slab.h>
 #include <linux/sysfs.h>
+#include <linux/module.h>
 
 #include "../iio.h"
 #include "../sysfs.h"
@@ -58,7 +59,6 @@ static struct attribute *ad2s90_attributes[] = {
 };
 
 static const struct attribute_group ad2s90_attribute_group = {
-	.name = DRV_NAME,
 	.attrs = ad2s90_attributes,
 };
 
diff --git a/drivers/staging/iio/sysfs.h b/drivers/staging/iio/sysfs.h
index dd79b5844212..0b75823fbe1b 100644
--- a/drivers/staging/iio/sysfs.h
+++ b/drivers/staging/iio/sysfs.h
@@ -12,19 +12,17 @@
 #ifndef _INDUSTRIAL_IO_SYSFS_H_
 #define _INDUSTRIAL_IO_SYSFS_H_
 
-#include "iio.h"
+struct iio_chan_spec;
 
 /**
  * struct iio_dev_attr - iio specific device attribute
  * @dev_attr:	underlying device attribute
  * @address:	associated register address
- * @val2:	secondary attribute value
  * @l:		list head for maintaining list of dynamically created attrs.
  */
 struct iio_dev_attr {
 	struct device_attribute dev_attr;
 	int address;
-	int val2;
 	struct list_head l;
 	struct iio_chan_spec const *c;
 };
@@ -64,10 +62,6 @@ struct iio_const_attr {
 	struct iio_dev_attr iio_dev_attr_##_vname			\
 	= IIO_ATTR(_name, _mode, _show, _store, _addr)
 
-#define IIO_DEVICE_ATTR_2(_name, _mode, _show, _store, _addr, _val2)	\
-	struct iio_dev_attr iio_dev_attr_##_name			\
-	= IIO_ATTR_2(_name, _mode, _show, _store, _addr, _val2)
-
 #define IIO_CONST_ATTR(_name, _string)					\
 	struct iio_const_attr iio_const_attr_##_name			\
 	= { .string = _string,						\
@@ -77,17 +71,8 @@ struct iio_const_attr {
 	struct iio_const_attr iio_const_attr_##_vname			\
 	= { .string = _string,						\
 	    .dev_attr = __ATTR(_name, S_IRUGO, iio_read_const_attr, NULL)}
-/* Generic attributes of onetype or another */
-
-/**
- * IIO_DEV_ATTR_REV - revision number for the device
- * @_show: output method for the attribute
- *
- * Very much device dependent.
- **/
-#define IIO_DEV_ATTR_REV(_show)			\
-	IIO_DEVICE_ATTR(revision, S_IRUGO, _show, NULL, 0)
 
+/* Generic attributes of onetype or another */
 /**
  * IIO_DEV_ATTR_RESET: resets the device
  **/
@@ -95,13 +80,6 @@ struct iio_const_attr {
 	IIO_DEVICE_ATTR(reset, S_IWUSR, NULL, _store, 0)
 
 /**
- * IIO_CONST_ATTR_NAME - constant identifier
- * @_string: the name
- **/
-#define IIO_CONST_ATTR_NAME(_string)				\
-	IIO_CONST_ATTR(name, _string)
-
-/**
  * IIO_DEV_ATTR_SAMP_FREQ - sets any internal clock frequency
  * @_mode: sysfs file mode/permissions
  * @_show: output method for the attribute
@@ -111,15 +89,11 @@ struct iio_const_attr {
 	IIO_DEVICE_ATTR(sampling_frequency, _mode, _show, _store, 0)
 
 /**
- * IIO_DEV_ATTR_AVAIL_SAMP_FREQ - list available sampling frequencies
+ * IIO_DEV_ATTR_SAMP_FREQ_AVAIL - list available sampling frequencies
  * @_show: output method for the attribute
  *
  * May be mode dependent on some devices
  **/
-/* Deprecated */
-#define IIO_DEV_ATTR_AVAIL_SAMP_FREQ(_show)				\
-	IIO_DEVICE_ATTR(available_sampling_frequency, S_IRUGO, _show, NULL, 0)
-
 #define IIO_DEV_ATTR_SAMP_FREQ_AVAIL(_show)				\
 	IIO_DEVICE_ATTR(sampling_frequency_available, S_IRUGO, _show, NULL, 0)
 /**
@@ -131,27 +105,6 @@ struct iio_const_attr {
 #define IIO_CONST_ATTR_SAMP_FREQ_AVAIL(_string)			\
 	IIO_CONST_ATTR(sampling_frequency_available, _string)
 
-/**
- * IIO_DEV_ATTR_SW_RING_ENABLE - enable software ring buffer
- * @_show: output method for the attribute
- * @_store: input method for the attribute
- *
- * Success may be dependent on attachment of trigger previously.
- **/
-#define IIO_DEV_ATTR_SW_RING_ENABLE(_show, _store)			\
-	IIO_DEVICE_ATTR(sw_ring_enable, S_IRUGO | S_IWUSR, _show, _store, 0)
-
-/**
- * IIO_DEV_ATTR_HW_RING_ENABLE - enable hardware ring buffer
- * @_show: output method for the attribute
- * @_store: input method for the attribute
- *
- * This is a different attribute from the software one as one can envision
- * schemes where a combination of the two may be used.
- **/
-#define IIO_DEV_ATTR_HW_RING_ENABLE(_show, _store)			\
-	IIO_DEVICE_ATTR(hw_ring_enable, S_IRUGO | S_IWUSR, _show, _store, 0)
-
 #define IIO_DEV_ATTR_TEMP_RAW(_show)			\
 	IIO_DEVICE_ATTR(temp_raw, S_IRUGO, _show, NULL, 0)
 
@@ -161,28 +114,6 @@ struct iio_const_attr {
 #define IIO_CONST_ATTR_TEMP_SCALE(_string)		\
 	IIO_CONST_ATTR(temp_scale, _string)
 
-/* must match our channel defs */
-#define IIO_EV_CLASS_IN			IIO_IN
-#define IIO_EV_CLASS_IN_DIFF		IIO_IN_DIFF
-#define IIO_EV_CLASS_ACCEL		IIO_ACCEL
-#define IIO_EV_CLASS_GYRO		IIO_GYRO
-#define IIO_EV_CLASS_MAGN		IIO_MAGN
-#define IIO_EV_CLASS_LIGHT		IIO_LIGHT
-#define IIO_EV_CLASS_PROXIMITY		IIO_PROXIMITY
-#define IIO_EV_CLASS_TEMP		IIO_TEMP
-
-#define IIO_EV_MOD_X			IIO_MOD_X
-#define IIO_EV_MOD_Y			IIO_MOD_Y
-#define IIO_EV_MOD_Z			IIO_MOD_Z
-#define IIO_EV_MOD_X_AND_Y		IIO_MOD_X_AND_Y
-#define IIO_EV_MOD_X_ANX_Z		IIO_MOD_X_AND_Z
-#define IIO_EV_MOD_Y_AND_Z		IIO_MOD_Y_AND_Z
-#define IIO_EV_MOD_X_AND_Y_AND_Z	IIO_MOD_X_AND_Y_AND_Z
-#define IIO_EV_MOD_X_OR_Y		IIO_MOD_X_OR_Y
-#define IIO_EV_MOD_X_OR_Z		IIO_MOD_X_OR_Z
-#define IIO_EV_MOD_Y_OR_Z		IIO_MOD_Y_OR_Z
-#define IIO_EV_MOD_X_OR_Y_OR_Z		IIO_MOD_X_OR_Y_OR_Z
-
 #define IIO_EV_TYPE_THRESH		0
 #define IIO_EV_TYPE_MAG			1
 #define IIO_EV_TYPE_ROC			2
@@ -207,10 +138,6 @@ struct iio_const_attr {
 #define IIO_UNMOD_EVENT_CODE(channelclass, number, type, direction)	\
 	IIO_EVENT_CODE(channelclass, 0, number, 0, type, direction)
 
-
-#define IIO_BUFFER_EVENT_CODE(code)		\
-	(IIO_EV_CLASS_BUFFER | (code << 8))
-
 #define IIO_EVENT_CODE_EXTRACT_DIR(mask) ((mask >> 24) & 0xf)
 
 /* Event code number extraction depends on which type of event we have.
diff --git a/drivers/staging/iio/trigger.h b/drivers/staging/iio/trigger.h
index e0b58ed749b8..598fcb3599f9 100644
--- a/drivers/staging/iio/trigger.h
+++ b/drivers/staging/iio/trigger.h
@@ -7,6 +7,7 @@
  * the Free Software Foundation.
  */
 #include <linux/irq.h>
+#include <linux/module.h>
 
 #ifndef _IIO_TRIGGER_H_
 #define _IIO_TRIGGER_H_
@@ -16,6 +17,27 @@ struct iio_subirq {
 };
 
 /**
+ * struct iio_trigger_ops - operations structure for an iio_trigger.
+ * @owner:		used to monitor usage count of the trigger.
+ * @set_trigger_state:	switch on/off the trigger on demand
+ * @try_reenable:	function to reenable the trigger when the
+ *			use count is zero (may be NULL)
+ * @validate_device:	function to validate the device when the
+ *			current trigger gets changed.
+ *
+ * This is typically static const within a driver and shared by
+ * instances of a given device.
+ **/
+struct iio_trigger_ops {
+	struct module			*owner;
+	int (*set_trigger_state)(struct iio_trigger *trig, bool state);
+	int (*try_reenable)(struct iio_trigger *trig);
+	int (*validate_device)(struct iio_trigger *trig,
+			       struct iio_dev *indio_dev);
+};
+
+
+/**
  * struct iio_trigger - industrial I/O trigger device
  *
  * @id:			[INTERN] unique id number
@@ -26,11 +48,6 @@ struct iio_subirq {
  * @alloc_list:		[DRIVER] used for driver specific trigger list
  * @owner:		[DRIVER] used to monitor usage count of the trigger.
  * @use_count:		use count for the trigger
- * @set_trigger_state:	[DRIVER] switch on/off the trigger on demand
- * @try_reenable:	function to reenable the trigger when the
- *			use count is zero (may be NULL)
- * @validate_device:	function to validate the device when the
- *			current trigger gets changed.
  * @subirq_chip:	[INTERN] associate 'virtual' irq chip.
  * @subirq_base:	[INTERN] base number for irqs provided by trigger.
  * @subirqs:		[INTERN] information about the 'child' irqs.
@@ -38,6 +55,7 @@ struct iio_subirq {
  * @pool_lock:		[INTERN] protection of the irq pool.
  **/
 struct iio_trigger {
+	const struct iio_trigger_ops	*ops;
 	int				id;
 	const char			*name;
 	struct device			dev;
@@ -48,11 +66,6 @@ struct iio_trigger {
 	struct module			*owner;
 	int use_count;
 
-	int (*set_trigger_state)(struct iio_trigger *trig, bool state);
-	int (*try_reenable)(struct iio_trigger *trig);
-	int (*validate_device)(struct iio_trigger *trig,
-			       struct iio_dev *indio_dev);
-
 	struct irq_chip			subirq_chip;
 	int				subirq_base;
 
@@ -61,29 +74,6 @@ struct iio_trigger {
 	struct mutex			pool_lock;
 };
 
-/**
- * struct iio_poll_func - poll function pair
- *
- * @private_data:		data specific to device (passed into poll func)
- * @h:				the function that is actually run on trigger
- * @thread:			threaded interrupt part
- * @type:			the type of interrupt (basically if oneshot)
- * @name:			name used to identify the trigger consumer.
- * @irq:			the corresponding irq as allocated from the
- *				trigger pool
- * @timestamp:			some devices need a timestamp grabbed as soon
- *				as possible after the trigger - hence handler
- *				passes it via here.
- **/
-struct iio_poll_func {
-	void				*private_data;
-	irqreturn_t (*h)(int irq, void *p);
-	irqreturn_t (*thread)(int irq, void *p);
-	int type;
-	char *name;
-	int irq;
-	s64 timestamp;
-};
 
 static inline struct iio_trigger *to_iio_trigger(struct device *d)
 {
@@ -92,14 +82,14 @@ static inline struct iio_trigger *to_iio_trigger(struct device *d)
 
 static inline void iio_put_trigger(struct iio_trigger *trig)
 {
+	module_put(trig->ops->owner);
 	put_device(&trig->dev);
-	module_put(trig->owner);
 };
 
 static inline void iio_get_trigger(struct iio_trigger *trig)
 {
-	__module_get(trig->owner);
 	get_device(&trig->dev);
+	__module_get(trig->ops->owner);
 };
 
 /**
@@ -115,23 +105,6 @@ int iio_trigger_register(struct iio_trigger *trig_info);
 void iio_trigger_unregister(struct iio_trigger *trig_info);
 
 /**
- * iio_trigger_attach_poll_func() - add a function pair to be run on trigger
- * @trig:	trigger to which the function pair are being added
- * @pf:		poll function pair
- **/
-int iio_trigger_attach_poll_func(struct iio_trigger *trig,
-				 struct iio_poll_func *pf);
-
-/**
- * iio_trigger_dettach_poll_func() -	remove function pair from those to be
- *					run on trigger
- * @trig:	trigger from which the function is being removed
- * @pf:		poll function pair
- **/
-int iio_trigger_dettach_poll_func(struct iio_trigger *trig,
-				  struct iio_poll_func *pf);
-
-/**
  * iio_trigger_poll() - called on a trigger occurring
  * @trig: trigger which occurred
  *
@@ -139,48 +112,9 @@ int iio_trigger_dettach_poll_func(struct iio_trigger *trig,
  **/
 void iio_trigger_poll(struct iio_trigger *trig, s64 time);
 void iio_trigger_poll_chained(struct iio_trigger *trig, s64 time);
-void iio_trigger_notify_done(struct iio_trigger *trig);
 
 irqreturn_t iio_trigger_generic_data_rdy_poll(int irq, void *private);
 
-static inline 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,
-				      ilog2(1));
-	mutex_unlock(&trig->pool_lock);
-	if (ret >= 0)
-		ret += trig->subirq_base;
-
-	return ret;
-};
-
-static inline void iio_trigger_put_irq(struct iio_trigger *trig, int irq)
-{
-	mutex_lock(&trig->pool_lock);
-	clear_bit(irq - trig->subirq_base, trig->pool);
-	mutex_unlock(&trig->pool_lock);
-};
-
-struct iio_poll_func
-*iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
-		    irqreturn_t (*thread)(int irq, void *p),
-		    int type,
-		    void *private,
-		    const char *fmt,
-		    ...);
-void iio_dealloc_pollfunc(struct iio_poll_func *pf);
-irqreturn_t iio_pollfunc_store_time(int irq, void *p);
-
-/*
- * Two functions for common case where all that happens is a pollfunc
- * is attached and detached from a trigger
- */
-int iio_triggered_ring_postenable(struct iio_dev *indio_dev);
-int iio_triggered_ring_predisable(struct iio_dev *indio_dev);
-
 struct iio_trigger *iio_allocate_trigger(const char *fmt, ...)
 	__attribute__((format(printf, 1, 2)));
 void iio_free_trigger(struct iio_trigger *trig);
diff --git a/drivers/staging/iio/trigger/iio-trig-bfin-timer.c b/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
index 4f1729565582..243f38f80de1 100644
--- a/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
+++ b/drivers/staging/iio/trigger/iio-trig-bfin-timer.c
@@ -143,6 +143,10 @@ static int iio_bfin_tmr_get_number(int irq)
 	return -ENODEV;
 }
 
+static const struct iio_trigger_ops iio_bfin_tmr_trigger_ops = {
+	owner = THIS_MODULE,
+};
+
 static int __devinit iio_bfin_tmr_trigger_probe(struct platform_device *pdev)
 {
 	struct bfin_tmr_state *st;
@@ -175,7 +179,7 @@ static int __devinit iio_bfin_tmr_trigger_probe(struct platform_device *pdev)
 	}
 
 	st->trig->private_data = st;
-	st->trig->owner = THIS_MODULE;
+	st->trig->ops = &iio_bfin_tmr_trigger_ops;
 	st->trig->dev.groups = iio_bfin_tmr_trigger_attr_groups;
 	ret = iio_trigger_register(st->trig);
 	if (ret)
diff --git a/drivers/staging/iio/trigger/iio-trig-gpio.c b/drivers/staging/iio/trigger/iio-trig-gpio.c
index f1fb795e6410..f2a655981622 100644
--- a/drivers/staging/iio/trigger/iio-trig-gpio.c
+++ b/drivers/staging/iio/trigger/iio-trig-gpio.c
@@ -47,6 +47,10 @@ static irqreturn_t iio_gpio_trigger_poll(int irq, void *private)
 	return IRQ_HANDLED;
 }
 
+static const struct iio_trigger_ops iio_gpio_trigger_ops = {
+	.owner = THIS_MODULE,
+};
+
 static int iio_gpio_trigger_probe(struct platform_device *pdev)
 {
 	struct iio_gpio_trigger_info *trig_info;
@@ -81,7 +85,7 @@ static int iio_gpio_trigger_probe(struct platform_device *pdev)
 			}
 			trig->private_data = trig_info;
 			trig_info->irq = irq;
-			trig->owner = THIS_MODULE;
+			trig->ops = &iio_gpio_trigger_ops;
 			ret = request_irq(irq, iio_gpio_trigger_poll,
 					  irqflags, trig->name, trig);
 			if (ret) {
diff --git a/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c b/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
index 01cf7e20b515..d35d085da949 100644
--- a/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
+++ b/drivers/staging/iio/trigger/iio-trig-periodic-rtc.c
@@ -96,6 +96,11 @@ static void iio_prtc_trigger_poll(void *private_data)
 	iio_trigger_poll(private_data, 0);
 }
 
+static const struct iio_trigger_ops iio_prtc_trigger_ops = {
+	.owner = THIS_MODULE,
+	.set_trigger_state = &iio_trig_periodic_rtc_set_state,
+};
+
 static int iio_trig_periodic_rtc_probe(struct platform_device *dev)
 {
 	char **pdata = dev->dev.platform_data;
@@ -121,7 +126,7 @@ static int iio_trig_periodic_rtc_probe(struct platform_device *dev)
 		}
 		trig->private_data = trig_info;
 		trig->owner = THIS_MODULE;
-		trig->set_trigger_state = &iio_trig_periodic_rtc_set_state;
+		trig->ops = &iio_prtc_trigger_ops;
 		/* RTC access */
 		trig_info->rtc
 			= rtc_class_open(pdata[i]);
diff --git a/drivers/staging/iio/trigger/iio-trig-sysfs.c b/drivers/staging/iio/trigger/iio-trig-sysfs.c
index 47248cd1fa0d..174dc65709d5 100644
--- a/drivers/staging/iio/trigger/iio-trig-sysfs.c
+++ b/drivers/staging/iio/trigger/iio-trig-sysfs.c
@@ -77,9 +77,16 @@ static const struct attribute_group *iio_sysfs_trig_groups[] = {
 	NULL
 };
 
+
+/* Nothing to actually do upon release */
+static void iio_trigger_sysfs_release(struct device *dev)
+{
+}
+
 static struct device iio_sysfs_trig_dev = {
 	.bus = &iio_bus_type,
 	.groups = iio_sysfs_trig_groups,
+	.release = &iio_trigger_sysfs_release,
 };
 
 static ssize_t iio_sysfs_trigger_poll(struct device *dev,
@@ -107,6 +114,10 @@ static const struct attribute_group *iio_sysfs_trigger_attr_groups[] = {
 	NULL
 };
 
+static const struct iio_trigger_ops iio_sysfs_trigger_ops = {
+	.owner = THIS_MODULE,
+};
+
 static int iio_sysfs_trigger_probe(int id)
 {
 	struct iio_sysfs_trig *t;
@@ -135,7 +146,7 @@ static int iio_sysfs_trigger_probe(int id)
 	}
 
 	t->trig->dev.groups = iio_sysfs_trigger_attr_groups;
-	t->trig->owner = THIS_MODULE;
+	t->trig->ops = &iio_sysfs_trigger_ops;
 	t->trig->dev.parent = &iio_sysfs_trig_dev;
 
 	ret = iio_trigger_register(t->trig);
diff --git a/drivers/staging/iio/trigger_consumer.h b/drivers/staging/iio/trigger_consumer.h
index 9d52d9637777..418e0bd5f4ce 100644
--- a/drivers/staging/iio/trigger_consumer.h
+++ b/drivers/staging/iio/trigger_consumer.h
@@ -1,47 +1,52 @@
-
-/* The industrial I/O core, trigger consumer handling functions
+/* The industrial I/O core, trigger consumer functions
  *
- * Copyright (c) 2008 Jonathan Cameron
+ * Copyright (c) 2008-2011 Jonathan Cameron
  *
  * This program is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 as published by
  * the Free Software Foundation.
  */
 
-#ifdef CONFIG_IIO_TRIGGER
-/**
- * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
- * @dev_info: iio_dev associated with the device that will consume the trigger
- **/
-int iio_device_register_trigger_consumer(struct iio_dev *dev_info);
-
-/**
- * iio_device_unregister_trigger_consumer() - reverse the registration process
- * @dev_info: iio_dev associated with the device that consumed the trigger
- **/
-int iio_device_unregister_trigger_consumer(struct iio_dev *dev_info);
-
-#else
-
 /**
- * iio_device_register_trigger_consumer() - set up an iio_dev to use triggers
- * @dev_info: iio_dev associated with the device that will consume the trigger
- **/
-static int iio_device_register_trigger_consumer(struct iio_dev *dev_info)
-{
-	return 0;
-};
-
-/**
- * iio_device_unregister_trigger_consumer() - reverse the registration process
- * @dev_info: iio_dev associated with the device that consumed the trigger
+ * struct iio_poll_func - poll function pair
+ *
+ * @indio_dev:			data specific to device (passed into poll func)
+ * @h:				the function that is actually run on trigger
+ * @thread:			threaded interrupt part
+ * @type:			the type of interrupt (basically if oneshot)
+ * @name:			name used to identify the trigger consumer.
+ * @irq:			the corresponding irq as allocated from the
+ *				trigger pool
+ * @timestamp:			some devices need a timestamp grabbed as soon
+ *				as possible after the trigger - hence handler
+ *				passes it via here.
  **/
-static int iio_device_unregister_trigger_consumer(struct iio_dev *dev_info)
-{
-	return 0;
+struct iio_poll_func {
+	struct iio_dev *indio_dev;
+	irqreturn_t (*h)(int irq, void *p);
+	irqreturn_t (*thread)(int irq, void *p);
+	int type;
+	char *name;
+	int irq;
+	s64 timestamp;
 };
 
-#endif /* CONFIG_TRIGGER_CONSUMER */
 
+struct iio_poll_func
+*iio_alloc_pollfunc(irqreturn_t (*h)(int irq, void *p),
+		    irqreturn_t (*thread)(int irq, void *p),
+		    int type,
+		    struct iio_dev *indio_dev,
+		    const char *fmt,
+		    ...);
+void iio_dealloc_pollfunc(struct iio_poll_func *pf);
+irqreturn_t iio_pollfunc_store_time(int irq, void *p);
 
+void iio_trigger_notify_done(struct iio_trigger *trig);
 
+/*
+ * Two functions for common case where all that happens is a pollfunc
+ * is attached and detached from a trigger
+ */
+int iio_triggered_ring_postenable(struct iio_dev *indio_dev);
+int iio_triggered_ring_predisable(struct iio_dev *indio_dev);