Merge tag 'iio-for-6.1a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio into char-misc-next

Jonathan writes:

1st set of IIO new device support, features and cleanup for 6.1

This includes Nuno Sa's work to move the IIO core over to generic firmware
properties rather than having DT specific code paths. Combined with Andy
Shevchenko's long term work on drivers, this leaves IIO in a good state for
handling other firmware types.

New device support
- liteon,ltrf216a
  * New driver and dt bindings to support this Light sensor.
- maxim,max11205
  * New driver for this 16bit single channel ADC.
- memsensing,msa311
  * New driver for this accelerometer. Includes a string helper for read/write.
- richtek,rtq6056
  * New driver and dt binding to support this current monitor used to measure
    power usage.
- yamaha,yas530
  * Support the YAS537 variant (series includes several fixes for other parts
    and new driver features).

Staging graduation
- adi,ad7746 CDC. Cleanup conducted against set of roadtest tests using
  the posted RFC of that framework.

Features
- core
  * Large rework to make all the core IIO code use generic firmware properties.
    Includes switching some drivers over as well using newly provided
    generic interfaces and allowing removal of DT specific ones.
  * Support for gesture event types for single and double tap. Used in
    bosch,bma400.
- atmel,at91-sama5d2
  * Add support for temperature sensor which uses two muxed inputs to estimate
    the temperature.
  * Handle trackx bits of EMR register to improve temp sampling accuracy.
  * Runtime PM support.
- liteon,ltrf216a
  * Add a _raw channel output to allow working around an issue with
    differing conversions equations that breaks some user space controls.
- mexelis,mlx90632
  * Support regulator control.
- ti,tsc2046
  * External reference voltage support.

Clean up and minor fixes
- Tree-wide
  * devm_clk_get_enabled() replacements of opencoded equivalent.
  * Remaining IIO_DMA_MINALIGN conversions (the staging/iio drivers).
  * Various minor warning and similar cleanup such as missing static
    markings.
  * strlcpy() to strscpy() for cases where return value not checked.
  * provide units.h entries for more HZ units and use them in drivers.
- dt-bindings cleanup
  * Drop maintainers listss where the email address is bouncing.
  * Switch spi devices over to using spi-peripheral.yaml
  * Add some missing unevaluatedProperties / additionalProperties: false
    entries.
- ABI docs
  * Add some missing channel type specific sampling frequency entries.
  * Add parameter names for callback parameters.
- MAINTAINERS
  * Fix wrong ADI forum links.
- core
  * lockdep class per device, to avoid an issue with nest when one IIO
    device is the consumer of another.
  * White space tweaks.
- asc,dlhl60d
  * Use get_unaligned_be24 to avoid some unusual data manipulation and masking.
- atmel,at91-sama5d2
  * Fix wrong max value.
  * Improve error handling when measuring pressure and touch.
  * Add locks to remove races on updating oversampling / sampling freq.
  * Add missing calls in suspend and resume path to ensure state is correctly
    brought up if buffered capture was in use when suspend happened.
  * Error out of write_raw() callback if buffered capture enabled to avoid
    unpredictable behavior.
  * Handle different versions having different oversampling ratio support and
    drop excess error checking.
  * Cleanup magic value defines where the name is just the value and hence
    hurts readability.
  * Use read_avail() callback to provide info on possible oversampling ratios.
  * Correctly handle variable bit depth when doing oversampling on different
    supported parts. Also handle higher oversampling ratios.
- fsl,imx8qxp
  * Don't ignore errors from regulator_get_voltage() so as to avoid some
    very surprising scaling.
- invensense,icp10100
  * Switch from UNIVERSAL to DEFINE_RUNTIME_DEV_PM_OPS. UNIVERSAL rarely made
    sense and is now deprecated. In this driver we just avoid double disabling
    in some paths.
- maxim,max1363
  * Drop consumer channel map provision by platform data. There have been
    better ways of doing this for years and there are no in tree users.
- microchip,mcp3911
  * Update status to maintained.
- qcom,spmi-adc5
  * Support measurement of LDO output voltage.
- qcom,spmi-adc
  * Add missing channel available on SM6125 SoC.
- st,stmpe
  * Drop requirement on node name in binding now that driver correctly
    doesn't enforce it.
- stx104
  * Move to more appropriate addac directory
- ti,am335x
  * Document ti,am654-adc compatible already in use in tree.
- ti,hmc5843
  * Move dev_pm_ops out of header and use new pm macros to handle export.
- yamaha,yas530
  * Minor cleanups.

* tag 'iio-for-6.1a' of https://git.kernel.org/pub/scm/linux/kernel/git/jic23/iio: (142 commits)
  iio: pressure: icp10100: Switch from UNIVERSAL to DEFINE_RUNTIME_DEV_PM_OPS().
  iio: adc: max1363: Drop provision to provide an IIO channel map via platform data
  iio: accel: bma400: Add support for single and double tap events
  iio: Add new event type gesture and use direction for single and double tap
  iio: Use per-device lockdep class for mlock
  iio: adc: add max11205 adc driver
  dt-bindings: iio: adc: Add max11205 documentation file
  iio: magnetometer: yamaha-yas530: Use dev_err_probe()
  iio: magnetometer: yamaha-yas530: Make strings const in chip info
  iio: magnetometer: yamaha-yas530: Use pointers as driver data
  iio: adc: tsc2046: silent spi_device_id warning
  iio: adc: tsc2046: add vref support
  dt-bindings: iio: adc: ti,tsc2046: add vref-supply property
  iio: light: ltrf216a: Add raw attribute
  dt-bindings: iio: Add missing (unevaluated|additional)Properties on child nodes
  MAINTAINERS: fix Analog Devices forum links
  iio/accel: fix repeated words in comments
  dt-bindings: iio: accel: add dt-binding schema for msa311 accel driver
  iio: add MEMSensing MSA311 3-axis accelerometer driver
  dt-bindings: vendor-prefixes: add MEMSensing Microsystems Co., Ltd.
  ...

9 files changed, 6 insertions, 798 deletions

diff --git a/drivers/staging/iio/Kconfig b/drivers/staging/iio/Kconfig
index a8e970db179d..afd05bf3345e 100644
--- a/drivers/staging/iio/Kconfig
+++ b/drivers/staging/iio/Kconfig
@@ -8,7 +8,6 @@ menu "IIO staging drivers"
 source "drivers/staging/iio/accel/Kconfig"
 source "drivers/staging/iio/adc/Kconfig"
 source "drivers/staging/iio/addac/Kconfig"
-source "drivers/staging/iio/cdc/Kconfig"
 source "drivers/staging/iio/frequency/Kconfig"
 source "drivers/staging/iio/impedance-analyzer/Kconfig"
 source "drivers/staging/iio/meter/Kconfig"
diff --git a/drivers/staging/iio/Makefile b/drivers/staging/iio/Makefile
index b15904b99581..5ed56fe57e14 100644
--- a/drivers/staging/iio/Makefile
+++ b/drivers/staging/iio/Makefile
@@ -6,7 +6,6 @@
 obj-y += accel/
 obj-y += adc/
 obj-y += addac/
-obj-y += cdc/
 obj-y += frequency/
 obj-y += impedance-analyzer/
 obj-y += meter/
diff --git a/drivers/staging/iio/cdc/Kconfig b/drivers/staging/iio/cdc/Kconfig
deleted file mode 100644
index a7386bbbcb79..000000000000
--- a/drivers/staging/iio/cdc/Kconfig
+++ /dev/null
@@ -1,17 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# CDC drivers
-#
-menu "Capacitance to digital converters"
-
-config AD7746
-	tristate "Analog Devices AD7745, AD7746 AD7747 capacitive sensor driver"
-	depends on I2C
-	help
-	  Say yes here to build support for Analog Devices capacitive sensors.
-	  (AD7745, AD7746, AD7747) Provides direct access via sysfs.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called ad7746.
-
-endmenu
diff --git a/drivers/staging/iio/cdc/Makefile b/drivers/staging/iio/cdc/Makefile
deleted file mode 100644
index afb7499a7090..000000000000
--- a/drivers/staging/iio/cdc/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-#
-# Makefile for industrial I/O CDC drivers
-#
-
-obj-$(CONFIG_AD7746) += ad7746.o
diff --git a/drivers/staging/iio/cdc/ad7746.c b/drivers/staging/iio/cdc/ad7746.c
deleted file mode 100644
index 52b8957c19c9..000000000000
--- a/drivers/staging/iio/cdc/ad7746.c
+++ /dev/null
@@ -1,767 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * AD7746 capacitive sensor driver supporting AD7745, AD7746 and AD7747
- *
- * Copyright 2011 Analog Devices Inc.
- */
-
-#include <linux/delay.h>
-#include <linux/device.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/kernel.h>
-#include <linux/module.h>
-#include <linux/slab.h>
-#include <linux/stat.h>
-#include <linux/sysfs.h>
-
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-/*
- * AD7746 Register Definition
- */
-
-#define AD7746_REG_STATUS		0
-#define AD7746_REG_CAP_DATA_HIGH	1
-#define AD7746_REG_VT_DATA_HIGH		4
-#define AD7746_REG_CAP_SETUP		7
-#define AD7746_REG_VT_SETUP		8
-#define AD7746_REG_EXC_SETUP		9
-#define AD7746_REG_CFG			10
-#define AD7746_REG_CAPDACA		11
-#define AD7746_REG_CAPDACB		12
-#define AD7746_REG_CAP_OFFH		13
-#define AD7746_REG_CAP_GAINH		15
-#define AD7746_REG_VOLT_GAINH		17
-
-/* Status Register Bit Designations (AD7746_REG_STATUS) */
-#define AD7746_STATUS_EXCERR		BIT(3)
-#define AD7746_STATUS_RDY		BIT(2)
-#define AD7746_STATUS_RDYVT		BIT(1)
-#define AD7746_STATUS_RDYCAP		BIT(0)
-
-/* Capacitive Channel Setup Register Bit Designations (AD7746_REG_CAP_SETUP) */
-#define AD7746_CAPSETUP_CAPEN		BIT(7)
-#define AD7746_CAPSETUP_CIN2		BIT(6) /* AD7746 only */
-#define AD7746_CAPSETUP_CAPDIFF		BIT(5)
-#define AD7746_CAPSETUP_CACHOP		BIT(0)
-
-/* Voltage/Temperature Setup Register Bit Designations (AD7746_REG_VT_SETUP) */
-#define AD7746_VTSETUP_VTEN		(1 << 7)
-#define AD7746_VTSETUP_VTMD_INT_TEMP	(0 << 5)
-#define AD7746_VTSETUP_VTMD_EXT_TEMP	(1 << 5)
-#define AD7746_VTSETUP_VTMD_VDD_MON	(2 << 5)
-#define AD7746_VTSETUP_VTMD_EXT_VIN	(3 << 5)
-#define AD7746_VTSETUP_EXTREF		BIT(4)
-#define AD7746_VTSETUP_VTSHORT		BIT(1)
-#define AD7746_VTSETUP_VTCHOP		BIT(0)
-
-/* Excitation Setup Register Bit Designations (AD7746_REG_EXC_SETUP) */
-#define AD7746_EXCSETUP_CLKCTRL		BIT(7)
-#define AD7746_EXCSETUP_EXCON		BIT(6)
-#define AD7746_EXCSETUP_EXCB		BIT(5)
-#define AD7746_EXCSETUP_NEXCB		BIT(4)
-#define AD7746_EXCSETUP_EXCA		BIT(3)
-#define AD7746_EXCSETUP_NEXCA		BIT(2)
-#define AD7746_EXCSETUP_EXCLVL(x)	(((x) & 0x3) << 0)
-
-/* Config Register Bit Designations (AD7746_REG_CFG) */
-#define AD7746_CONF_VTFS_SHIFT		6
-#define AD7746_CONF_CAPFS_SHIFT		3
-#define AD7746_CONF_VTFS_MASK		GENMASK(7, 6)
-#define AD7746_CONF_CAPFS_MASK		GENMASK(5, 3)
-#define AD7746_CONF_MODE_IDLE		(0 << 0)
-#define AD7746_CONF_MODE_CONT_CONV	(1 << 0)
-#define AD7746_CONF_MODE_SINGLE_CONV	(2 << 0)
-#define AD7746_CONF_MODE_PWRDN		(3 << 0)
-#define AD7746_CONF_MODE_OFFS_CAL	(5 << 0)
-#define AD7746_CONF_MODE_GAIN_CAL	(6 << 0)
-
-/* CAPDAC Register Bit Designations (AD7746_REG_CAPDACx) */
-#define AD7746_CAPDAC_DACEN		BIT(7)
-#define AD7746_CAPDAC_DACP(x)		((x) & 0x7F)
-
-struct ad7746_chip_info {
-	struct i2c_client *client;
-	struct mutex lock; /* protect sensor state */
-	/*
-	 * Capacitive channel digital filter setup;
-	 * conversion time/update rate setup per channel
-	 */
-	u8	config;
-	u8	cap_setup;
-	u8	vt_setup;
-	u8	capdac[2][2];
-	s8	capdac_set;
-
-	union {
-		__be32 d32;
-		u8 d8[4];
-	} data ____cacheline_aligned;
-};
-
-enum ad7746_chan {
-	VIN,
-	VIN_VDD,
-	TEMP_INT,
-	TEMP_EXT,
-	CIN1,
-	CIN1_DIFF,
-	CIN2,
-	CIN2_DIFF,
-};
-
-static const struct iio_chan_spec ad7746_channels[] = {
-	[VIN] = {
-		.type = IIO_VOLTAGE,
-		.indexed = 1,
-		.channel = 0,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
-			BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_EXT_VIN,
-	},
-	[VIN_VDD] = {
-		.type = IIO_VOLTAGE,
-		.indexed = 1,
-		.channel = 1,
-		.extend_name = "supply",
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) |
-			BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_VDD_MON,
-	},
-	[TEMP_INT] = {
-		.type = IIO_TEMP,
-		.indexed = 1,
-		.channel = 0,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_INT_TEMP,
-	},
-	[TEMP_EXT] = {
-		.type = IIO_TEMP,
-		.indexed = 1,
-		.channel = 1,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
-		.address = AD7746_REG_VT_DATA_HIGH << 8 |
-			AD7746_VTSETUP_VTMD_EXT_TEMP,
-	},
-	[CIN1] = {
-		.type = IIO_CAPACITANCE,
-		.indexed = 1,
-		.channel = 0,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
-		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8,
-	},
-	[CIN1_DIFF] = {
-		.type = IIO_CAPACITANCE,
-		.differential = 1,
-		.indexed = 1,
-		.channel = 0,
-		.channel2 = 2,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
-		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8 |
-			AD7746_CAPSETUP_CAPDIFF
-	},
-	[CIN2] = {
-		.type = IIO_CAPACITANCE,
-		.indexed = 1,
-		.channel = 1,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
-		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8 |
-			AD7746_CAPSETUP_CIN2,
-	},
-	[CIN2_DIFF] = {
-		.type = IIO_CAPACITANCE,
-		.differential = 1,
-		.indexed = 1,
-		.channel = 1,
-		.channel2 = 3,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-		BIT(IIO_CHAN_INFO_CALIBSCALE) | BIT(IIO_CHAN_INFO_OFFSET),
-		.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_CALIBBIAS) |
-		BIT(IIO_CHAN_INFO_SCALE) | BIT(IIO_CHAN_INFO_SAMP_FREQ),
-		.address = AD7746_REG_CAP_DATA_HIGH << 8 |
-			AD7746_CAPSETUP_CAPDIFF | AD7746_CAPSETUP_CIN2,
-	}
-};
-
-/* Values are Update Rate (Hz), Conversion Time (ms) + 1*/
-static const unsigned char ad7746_vt_filter_rate_table[][2] = {
-	{50, 20 + 1}, {31, 32 + 1}, {16, 62 + 1}, {8, 122 + 1},
-};
-
-static const unsigned char ad7746_cap_filter_rate_table[][2] = {
-	{91, 11 + 1}, {84, 12 + 1}, {50, 20 + 1}, {26, 38 + 1},
-	{16, 62 + 1}, {13, 77 + 1}, {11, 92 + 1}, {9, 110 + 1},
-};
-
-static int ad7746_set_capdac(struct ad7746_chip_info *chip, int channel)
-{
-	int ret = i2c_smbus_write_byte_data(chip->client,
-					    AD7746_REG_CAPDACA,
-					    chip->capdac[channel][0]);
-	if (ret < 0)
-		return ret;
-
-	return i2c_smbus_write_byte_data(chip->client,
-					  AD7746_REG_CAPDACB,
-					  chip->capdac[channel][1]);
-}
-
-static int ad7746_select_channel(struct iio_dev *indio_dev,
-				 struct iio_chan_spec const *chan)
-{
-	struct ad7746_chip_info *chip = iio_priv(indio_dev);
-	u8 vt_setup, cap_setup;
-	int ret, delay, idx;
-
-	switch (chan->type) {
-	case IIO_CAPACITANCE:
-		cap_setup = (chan->address & 0xFF) | AD7746_CAPSETUP_CAPEN;
-		vt_setup = chip->vt_setup & ~AD7746_VTSETUP_VTEN;
-		idx = (chip->config & AD7746_CONF_CAPFS_MASK) >>
-			AD7746_CONF_CAPFS_SHIFT;
-		delay = ad7746_cap_filter_rate_table[idx][1];
-
-		ret = ad7746_set_capdac(chip, chan->channel);
-		if (ret < 0)
-			return ret;
-
-		if (chip->capdac_set != chan->channel)
-			chip->capdac_set = chan->channel;
-		break;
-	case IIO_VOLTAGE:
-	case IIO_TEMP:
-		vt_setup = (chan->address & 0xFF) | AD7746_VTSETUP_VTEN;
-		cap_setup = chip->cap_setup & ~AD7746_CAPSETUP_CAPEN;
-		idx = (chip->config & AD7746_CONF_VTFS_MASK) >>
-			AD7746_CONF_VTFS_SHIFT;
-		delay = ad7746_cap_filter_rate_table[idx][1];
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	if (chip->cap_setup != cap_setup) {
-		ret = i2c_smbus_write_byte_data(chip->client,
-						AD7746_REG_CAP_SETUP,
-						cap_setup);
-		if (ret < 0)
-			return ret;
-
-		chip->cap_setup = cap_setup;
-	}
-
-	if (chip->vt_setup != vt_setup) {
-		ret = i2c_smbus_write_byte_data(chip->client,
-						AD7746_REG_VT_SETUP,
-						vt_setup);
-		if (ret < 0)
-			return ret;
-
-		chip->vt_setup = vt_setup;
-	}
-
-	return delay;
-}
-
-static inline ssize_t ad7746_start_calib(struct device *dev,
-					 struct device_attribute *attr,
-					 const char *buf,
-					 size_t len,
-					 u8 regval)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct ad7746_chip_info *chip = iio_priv(indio_dev);
-	int ret, timeout = 10;
-	bool doit;
-
-	ret = kstrtobool(buf, &doit);
-	if (ret < 0)
-		return ret;
-
-	if (!doit)
-		return 0;
-
-	mutex_lock(&chip->lock);
-	regval |= chip->config;
-	ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG, regval);
-	if (ret < 0)
-		goto unlock;
-
-	do {
-		msleep(20);
-		ret = i2c_smbus_read_byte_data(chip->client, AD7746_REG_CFG);
-		if (ret < 0)
-			goto unlock;
-
-	} while ((ret == regval) && timeout--);
-
-	mutex_unlock(&chip->lock);
-
-	return len;
-
-unlock:
-	mutex_unlock(&chip->lock);
-	return ret;
-}
-
-static ssize_t ad7746_start_offset_calib(struct device *dev,
-					 struct device_attribute *attr,
-					 const char *buf,
-					 size_t len)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	int ret = ad7746_select_channel(indio_dev,
-			      &ad7746_channels[to_iio_dev_attr(attr)->address]);
-	if (ret < 0)
-		return ret;
-
-	return ad7746_start_calib(dev, attr, buf, len,
-				  AD7746_CONF_MODE_OFFS_CAL);
-}
-
-static ssize_t ad7746_start_gain_calib(struct device *dev,
-				       struct device_attribute *attr,
-				       const char *buf,
-				       size_t len)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	int ret = ad7746_select_channel(indio_dev,
-			      &ad7746_channels[to_iio_dev_attr(attr)->address]);
-	if (ret < 0)
-		return ret;
-
-	return ad7746_start_calib(dev, attr, buf, len,
-				  AD7746_CONF_MODE_GAIN_CAL);
-}
-
-static IIO_DEVICE_ATTR(in_capacitance0_calibbias_calibration,
-		       0200, NULL, ad7746_start_offset_calib, CIN1);
-static IIO_DEVICE_ATTR(in_capacitance1_calibbias_calibration,
-		       0200, NULL, ad7746_start_offset_calib, CIN2);
-static IIO_DEVICE_ATTR(in_capacitance0_calibscale_calibration,
-		       0200, NULL, ad7746_start_gain_calib, CIN1);
-static IIO_DEVICE_ATTR(in_capacitance1_calibscale_calibration,
-		       0200, NULL, ad7746_start_gain_calib, CIN2);
-static IIO_DEVICE_ATTR(in_voltage0_calibscale_calibration,
-		       0200, NULL, ad7746_start_gain_calib, VIN);
-
-static int ad7746_store_cap_filter_rate_setup(struct ad7746_chip_info *chip,
-					      int val)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(ad7746_cap_filter_rate_table); i++)
-		if (val >= ad7746_cap_filter_rate_table[i][0])
-			break;
-
-	if (i >= ARRAY_SIZE(ad7746_cap_filter_rate_table))
-		i = ARRAY_SIZE(ad7746_cap_filter_rate_table) - 1;
-
-	chip->config &= ~AD7746_CONF_CAPFS_MASK;
-	chip->config |= i << AD7746_CONF_CAPFS_SHIFT;
-
-	return 0;
-}
-
-static int ad7746_store_vt_filter_rate_setup(struct ad7746_chip_info *chip,
-					     int val)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(ad7746_vt_filter_rate_table); i++)
-		if (val >= ad7746_vt_filter_rate_table[i][0])
-			break;
-
-	if (i >= ARRAY_SIZE(ad7746_vt_filter_rate_table))
-		i = ARRAY_SIZE(ad7746_vt_filter_rate_table) - 1;
-
-	chip->config &= ~AD7746_CONF_VTFS_MASK;
-	chip->config |= i << AD7746_CONF_VTFS_SHIFT;
-
-	return 0;
-}
-
-static IIO_CONST_ATTR(in_voltage_sampling_frequency_available, "50 31 16 8");
-static IIO_CONST_ATTR(in_capacitance_sampling_frequency_available,
-		       "91 84 50 26 16 13 11 9");
-
-static struct attribute *ad7746_attributes[] = {
-	&iio_dev_attr_in_capacitance0_calibbias_calibration.dev_attr.attr,
-	&iio_dev_attr_in_capacitance0_calibscale_calibration.dev_attr.attr,
-	&iio_dev_attr_in_capacitance1_calibscale_calibration.dev_attr.attr,
-	&iio_dev_attr_in_capacitance1_calibbias_calibration.dev_attr.attr,
-	&iio_dev_attr_in_voltage0_calibscale_calibration.dev_attr.attr,
-	&iio_const_attr_in_voltage_sampling_frequency_available.dev_attr.attr,
-	&iio_const_attr_in_capacitance_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group ad7746_attribute_group = {
-	.attrs = ad7746_attributes,
-};
-
-static int ad7746_write_raw(struct iio_dev *indio_dev,
-			    struct iio_chan_spec const *chan,
-			    int val,
-			    int val2,
-			    long mask)
-{
-	struct ad7746_chip_info *chip = iio_priv(indio_dev);
-	int ret, reg;
-
-	mutex_lock(&chip->lock);
-
-	switch (mask) {
-	case IIO_CHAN_INFO_CALIBSCALE:
-		if (val != 1) {
-			ret = -EINVAL;
-			goto out;
-		}
-
-		val = (val2 * 1024) / 15625;
-
-		switch (chan->type) {
-		case IIO_CAPACITANCE:
-			reg = AD7746_REG_CAP_GAINH;
-			break;
-		case IIO_VOLTAGE:
-			reg = AD7746_REG_VOLT_GAINH;
-			break;
-		default:
-			ret = -EINVAL;
-			goto out;
-		}
-
-		ret = i2c_smbus_write_word_swapped(chip->client, reg, val);
-		if (ret < 0)
-			goto out;
-
-		ret = 0;
-		break;
-	case IIO_CHAN_INFO_CALIBBIAS:
-		if (val < 0 || val > 0xFFFF) {
-			ret = -EINVAL;
-			goto out;
-		}
-		ret = i2c_smbus_write_word_swapped(chip->client,
-						   AD7746_REG_CAP_OFFH, val);
-		if (ret < 0)
-			goto out;
-
-		ret = 0;
-		break;
-	case IIO_CHAN_INFO_OFFSET:
-		if (val < 0 || val > 43008000) { /* 21pF */
-			ret = -EINVAL;
-			goto out;
-		}
-
-		/*
-		 * CAPDAC Scale = 21pF_typ / 127
-		 * CIN Scale = 8.192pF / 2^24
-		 * Offset Scale = CAPDAC Scale / CIN Scale = 338646
-		 */
-
-		val /= 338646;
-
-		chip->capdac[chan->channel][chan->differential] = val > 0 ?
-			AD7746_CAPDAC_DACP(val) | AD7746_CAPDAC_DACEN : 0;
-
-		ret = ad7746_set_capdac(chip, chan->channel);
-		if (ret < 0)
-			goto out;
-
-		chip->capdac_set = chan->channel;
-
-		ret = 0;
-		break;
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (val2) {
-			ret = -EINVAL;
-			goto out;
-		}
-
-		switch (chan->type) {
-		case IIO_CAPACITANCE:
-			ret = ad7746_store_cap_filter_rate_setup(chip, val);
-			break;
-		case IIO_VOLTAGE:
-			ret = ad7746_store_vt_filter_rate_setup(chip, val);
-			break;
-		default:
-			ret = -EINVAL;
-		}
-		break;
-	default:
-		ret = -EINVAL;
-	}
-
-out:
-	mutex_unlock(&chip->lock);
-	return ret;
-}
-
-static int ad7746_read_raw(struct iio_dev *indio_dev,
-			   struct iio_chan_spec const *chan,
-			   int *val, int *val2,
-			   long mask)
-{
-	struct ad7746_chip_info *chip = iio_priv(indio_dev);
-	int ret, delay, idx;
-	u8 regval, reg;
-
-	mutex_lock(&chip->lock);
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-	case IIO_CHAN_INFO_PROCESSED:
-		ret = ad7746_select_channel(indio_dev, chan);
-		if (ret < 0)
-			goto out;
-		delay = ret;
-
-		regval = chip->config | AD7746_CONF_MODE_SINGLE_CONV;
-		ret = i2c_smbus_write_byte_data(chip->client, AD7746_REG_CFG,
-						regval);
-		if (ret < 0)
-			goto out;
-
-		msleep(delay);
-		/* Now read the actual register */
-
-		ret = i2c_smbus_read_i2c_block_data(chip->client,
-						    chan->address >> 8, 3,
-						    &chip->data.d8[1]);
-
-		if (ret < 0)
-			goto out;
-
-		*val = (be32_to_cpu(chip->data.d32) & 0xFFFFFF) - 0x800000;
-
-		switch (chan->type) {
-		case IIO_TEMP:
-			/*
-			 * temperature in milli degrees Celsius
-			 * T = ((*val / 2048) - 4096) * 1000
-			 */
-			*val = (*val * 125) / 256;
-			break;
-		case IIO_VOLTAGE:
-			if (chan->channel == 1) /* supply_raw*/
-				*val = *val * 6;
-			break;
-		default:
-			break;
-		}
-
-		ret = IIO_VAL_INT;
-		break;
-	case IIO_CHAN_INFO_CALIBSCALE:
-		switch (chan->type) {
-		case IIO_CAPACITANCE:
-			reg = AD7746_REG_CAP_GAINH;
-			break;
-		case IIO_VOLTAGE:
-			reg = AD7746_REG_VOLT_GAINH;
-			break;
-		default:
-			ret = -EINVAL;
-			goto out;
-		}
-
-		ret = i2c_smbus_read_word_swapped(chip->client, reg);
-		if (ret < 0)
-			goto out;
-		/* 1 + gain_val / 2^16 */
-		*val = 1;
-		*val2 = (15625 * ret) / 1024;
-
-		ret = IIO_VAL_INT_PLUS_MICRO;
-		break;
-	case IIO_CHAN_INFO_CALIBBIAS:
-		ret = i2c_smbus_read_word_swapped(chip->client,
-						  AD7746_REG_CAP_OFFH);
-		if (ret < 0)
-			goto out;
-		*val = ret;
-
-		ret = IIO_VAL_INT;
-		break;
-	case IIO_CHAN_INFO_OFFSET:
-		*val = AD7746_CAPDAC_DACP(chip->capdac[chan->channel]
-					  [chan->differential]) * 338646;
-
-		ret = IIO_VAL_INT;
-		break;
-	case IIO_CHAN_INFO_SCALE:
-		switch (chan->type) {
-		case IIO_CAPACITANCE:
-			/* 8.192pf / 2^24 */
-			*val =  0;
-			*val2 = 488;
-			ret = IIO_VAL_INT_PLUS_NANO;
-			break;
-		case IIO_VOLTAGE:
-			/* 1170mV / 2^23 */
-			*val = 1170;
-			*val2 = 23;
-			ret = IIO_VAL_FRACTIONAL_LOG2;
-			break;
-		default:
-			ret = -EINVAL;
-			break;
-		}
-
-		break;
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		switch (chan->type) {
-		case IIO_CAPACITANCE:
-			idx = (chip->config & AD7746_CONF_CAPFS_MASK) >>
-				AD7746_CONF_CAPFS_SHIFT;
-			*val = ad7746_cap_filter_rate_table[idx][0];
-			ret = IIO_VAL_INT;
-			break;
-		case IIO_VOLTAGE:
-			idx = (chip->config & AD7746_CONF_VTFS_MASK) >>
-				AD7746_CONF_VTFS_SHIFT;
-			*val = ad7746_vt_filter_rate_table[idx][0];
-			ret = IIO_VAL_INT;
-			break;
-		default:
-			ret = -EINVAL;
-		}
-		break;
-	default:
-		ret = -EINVAL;
-	}
-out:
-	mutex_unlock(&chip->lock);
-	return ret;
-}
-
-static const struct iio_info ad7746_info = {
-	.attrs = &ad7746_attribute_group,
-	.read_raw = ad7746_read_raw,
-	.write_raw = ad7746_write_raw,
-};
-
-static int ad7746_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
-{
-	struct device *dev = &client->dev;
-	struct ad7746_chip_info *chip;
-	struct iio_dev *indio_dev;
-	unsigned char regval = 0;
-	unsigned int vdd_permille;
-	int ret;
-
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*chip));
-	if (!indio_dev)
-		return -ENOMEM;
-	chip = iio_priv(indio_dev);
-	mutex_init(&chip->lock);
-	/* this is only used for device removal purposes */
-	i2c_set_clientdata(client, indio_dev);
-
-	chip->client = client;
-	chip->capdac_set = -1;
-
-	indio_dev->name = id->name;
-	indio_dev->info = &ad7746_info;
-	indio_dev->channels = ad7746_channels;
-	if (id->driver_data == 7746)
-		indio_dev->num_channels = ARRAY_SIZE(ad7746_channels);
-	else
-		indio_dev->num_channels =  ARRAY_SIZE(ad7746_channels) - 2;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-
-	if (device_property_read_bool(dev, "adi,exca-output-en")) {
-		if (device_property_read_bool(dev, "adi,exca-output-invert"))
-			regval |= AD7746_EXCSETUP_NEXCA;
-		else
-			regval |= AD7746_EXCSETUP_EXCA;
-	}
-
-	if (device_property_read_bool(dev, "adi,excb-output-en")) {
-		if (device_property_read_bool(dev, "adi,excb-output-invert"))
-			regval |= AD7746_EXCSETUP_NEXCB;
-		else
-			regval |= AD7746_EXCSETUP_EXCB;
-	}
-
-	ret = device_property_read_u32(dev, "adi,excitation-vdd-permille",
-				       &vdd_permille);
-	if (!ret) {
-		switch (vdd_permille) {
-		case 125:
-			regval |= AD7746_EXCSETUP_EXCLVL(0);
-			break;
-		case 250:
-			regval |= AD7746_EXCSETUP_EXCLVL(1);
-			break;
-		case 375:
-			regval |= AD7746_EXCSETUP_EXCLVL(2);
-			break;
-		case 500:
-			regval |= AD7746_EXCSETUP_EXCLVL(3);
-			break;
-		default:
-			break;
-		}
-	}
-
-	ret = i2c_smbus_write_byte_data(chip->client,
-					AD7746_REG_EXC_SETUP, regval);
-	if (ret < 0)
-		return ret;
-
-	return devm_iio_device_register(indio_dev->dev.parent, indio_dev);
-}
-
-static const struct i2c_device_id ad7746_id[] = {
-	{ "ad7745", 7745 },
-	{ "ad7746", 7746 },
-	{ "ad7747", 7747 },
-	{}
-};
-
-MODULE_DEVICE_TABLE(i2c, ad7746_id);
-
-static const struct of_device_id ad7746_of_match[] = {
-	{ .compatible = "adi,ad7745" },
-	{ .compatible = "adi,ad7746" },
-	{ .compatible = "adi,ad7747" },
-	{ },
-};
-
-MODULE_DEVICE_TABLE(of, ad7746_of_match);
-
-static struct i2c_driver ad7746_driver = {
-	.driver = {
-		.name = KBUILD_MODNAME,
-		.of_match_table = ad7746_of_match,
-	},
-	.probe = ad7746_probe,
-	.id_table = ad7746_id,
-};
-module_i2c_driver(ad7746_driver);
-
-MODULE_AUTHOR("Michael Hennerich <michael.hennerich@analog.com>");
-MODULE_DESCRIPTION("Analog Devices AD7746/5/7 capacitive sensor driver");
-MODULE_LICENSE("GPL v2");
diff --git a/drivers/staging/iio/frequency/ad9832.c b/drivers/staging/iio/frequency/ad9832.c
index f43464db618a..6f9eebd6c7ee 100644
--- a/drivers/staging/iio/frequency/ad9832.c
+++ b/drivers/staging/iio/frequency/ad9832.c
@@ -112,10 +112,10 @@ struct ad9832_state {
 	 * transfer buffers to live in their own cache lines.
 	 */
 	union {
-		__be16			freq_data[4]____cacheline_aligned;
+		__be16			freq_data[4];
 		__be16			phase_data[2];
 		__be16			data;
-	};
+	} __aligned(IIO_DMA_MINALIGN);
 };
 
 static unsigned long ad9832_calc_freqreg(unsigned long mclk, unsigned long fout)
diff --git a/drivers/staging/iio/frequency/ad9834.c b/drivers/staging/iio/frequency/ad9834.c
index 94b131ef8a22..2b4267a87e65 100644
--- a/drivers/staging/iio/frequency/ad9834.c
+++ b/drivers/staging/iio/frequency/ad9834.c
@@ -83,7 +83,7 @@ struct ad9834_state {
 	 * DMA (thus cache coherency maintenance) requires the
 	 * transfer buffers to live in their own cache lines.
 	 */
-	__be16				data ____cacheline_aligned;
+	__be16				data __aligned(IIO_DMA_MINALIGN);
 	__be16				freq_data[2];
 };
 
diff --git a/drivers/staging/iio/meter/ade7854.h b/drivers/staging/iio/meter/ade7854.h
index a51e6e3183d3..7a49f8f1016f 100644
--- a/drivers/staging/iio/meter/ade7854.h
+++ b/drivers/staging/iio/meter/ade7854.h
@@ -162,7 +162,7 @@ struct ade7854_state {
 			 int bits);
 	int irq;
 	struct mutex buf_lock;
-	u8 tx[ADE7854_MAX_TX] ____cacheline_aligned;
+	u8 tx[ADE7854_MAX_TX] __aligned(IIO_DMA_MINALIGN);
 	u8 rx[ADE7854_MAX_RX];
 
 };
diff --git a/drivers/staging/iio/resolver/ad2s1210.c b/drivers/staging/iio/resolver/ad2s1210.c
index c0b2716d0511..e4cf42438487 100644
--- a/drivers/staging/iio/resolver/ad2s1210.c
+++ b/drivers/staging/iio/resolver/ad2s1210.c
@@ -94,8 +94,8 @@ struct ad2s1210_state {
 	bool hysteresis;
 	u8 resolution;
 	enum ad2s1210_mode mode;
-	u8 rx[2] ____cacheline_aligned;
-	u8 tx[2] ____cacheline_aligned;
+	u8 rx[2] __aligned(IIO_DMA_MINALIGN);
+	u8 tx[2];
 };
 
 static const int ad2s1210_mode_vals[4][2] = {