Merge tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc and other driver updates from Greg KH:
 "Here is the large set of char/misc and other small driver subsystem
  changes for 6.1-rc1. Loads of different things in here:

   - IIO driver updates, additions, and changes. Probably the largest
     part of the diffstat

   - habanalabs driver update with support for new hardware and
     features, the second largest part of the diff.

   - fpga subsystem driver updates and additions

   - mhi subsystem updates

   - Coresight driver updates

   - gnss subsystem updates

   - extcon driver updates

   - icc subsystem updates

   - fsi subsystem updates

   - nvmem subsystem and driver updates

   - misc driver updates

   - speakup driver additions for new features

   - lots of tiny driver updates and cleanups

  All of these have been in the linux-next tree for a while with no
  reported issues"

* tag 'char-misc-6.1-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (411 commits)
  w1: Split memcpy() of struct cn_msg flexible array
  spmi: pmic-arb: increase SPMI transaction timeout delay
  spmi: pmic-arb: block access for invalid PMIC arbiter v5 SPMI writes
  spmi: pmic-arb: correct duplicate APID to PPID mapping logic
  spmi: pmic-arb: add support to dispatch interrupt based on IRQ status
  spmi: pmic-arb: check apid against limits before calling irq handler
  spmi: pmic-arb: do not ack and clear peripheral interrupts in cleanup_irq
  spmi: pmic-arb: handle spurious interrupt
  spmi: pmic-arb: add a print in cleanup_irq
  drivers: spmi: Directly use ida_alloc()/free()
  MAINTAINERS: add TI ECAP driver info
  counter: ti-ecap-capture: capture driver support for ECAP
  Documentation: ABI: sysfs-bus-counter: add frequency & num_overflows items
  dt-bindings: counter: add ti,am62-ecap-capture.yaml
  counter: Introduce the COUNTER_COMP_ARRAY component type
  counter: Consolidate Counter extension sysfs attribute creation
  counter: Introduce the Count capture component
  counter: 104-quad-8: Add Signal polarity component
  counter: Introduce the Signal polarity component
  counter: interrupt-cnt: Implement watch_validate callback
  ...

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] = {