Revert "iio: imu: Add support for Kionix KMX61 sensor"

The two halves of this part can run largely independently.  Hence
a version 4 of this patch followed that reorganized things completely.

This reverts commit d7d787d29148cde12958c2e3765ad3a55dc55eaf.

3 files changed, 0 insertions, 777 deletions

diff --git a/drivers/iio/imu/Kconfig b/drivers/iio/imu/Kconfig
index d675f43cb76a..2b0e45133e9d 100644
--- a/drivers/iio/imu/Kconfig
+++ b/drivers/iio/imu/Kconfig
@@ -25,15 +25,6 @@ config ADIS16480
 	  Say yes here to build support for Analog Devices ADIS16375, ADIS16480,
 	  ADIS16485, ADIS16488 inertial sensors.
 
-config KMX61
-	tristate "Kionix KMX61 6-axis accelerometer and magnetometer"
-	depends on I2C
-	help
-	  Say Y here if you want to build a driver for Kionix KMX61 6-axis accelerometer
-	  and magnetometer.
-	  To compile this driver as module, choose M here: the module will be called
-	  kmx61.
-
 source "drivers/iio/imu/inv_mpu6050/Kconfig"
 
 endmenu
diff --git a/drivers/iio/imu/Makefile b/drivers/iio/imu/Makefile
index e1e6e3d70e26..114d2c17cbe2 100644
--- a/drivers/iio/imu/Makefile
+++ b/drivers/iio/imu/Makefile
@@ -14,5 +14,3 @@ adis_lib-$(CONFIG_IIO_ADIS_LIB_BUFFER) += adis_buffer.o
 obj-$(CONFIG_IIO_ADIS_LIB) += adis_lib.o
 
 obj-y += inv_mpu6050/
-
-obj-$(CONFIG_KMX61) += kmx61.o
diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c
deleted file mode 100644
index f68b3ef1a575..000000000000
--- a/drivers/iio/imu/kmx61.c
+++ /dev/null
@@ -1,766 +0,0 @@
-/*
- * KMX61 - Kionix 6-axis Accelerometer/Magnetometer
- *
- * Copyright (c) 2014, Intel Corporation.
- *
- * This file is subject to the terms and conditions of version 2 of
- * the GNU General Public License.  See the file COPYING in the main
- * directory of this archive for more details.
- *
- * IIO driver for KMX61 (7-bit I2C slave address 0x0E or 0x0F).
- *
- * TODO: buffer, interrupt, thresholds, acpi, temperature sensor
- *
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/pm.h>
-#include <linux/pm_runtime.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-
-#define KMX61_DRV_NAME "kmx61"
-
-#define KMX61_REG_WHO_AM_I	0x00
-
-/*
- * three 16-bit accelerometer output registers for X/Y/Z axis
- * we use only XOUT_L as a base register, all other addresses
- * can be obtained by applying an offset and are provided here
- * only for clarity.
- */
-#define KMX61_ACC_XOUT_L	0x0A
-#define KMX61_ACC_XOUT_H	0x0B
-#define KMX61_ACC_YOUT_L	0x0C
-#define KMX61_ACC_YOUT_H	0x0D
-#define KMX61_ACC_ZOUT_L	0x0E
-#define KMX61_ACC_ZOUT_H	0x0F
-
-/*
- * one 16-bit temperature output register
- */
-#define KMX61_TEMP_L		0x10
-#define KMX61_TEMP_H		0x11
-
-/*
- * three 16-bit magnetometer output registers for X/Y/Z axis
- */
-#define KMX61_MAG_XOUT_L	0x12
-#define KMX61_MAG_XOUT_H	0x13
-#define KMX61_MAG_YOUT_L	0x14
-#define KMX61_MAG_YOUT_H	0x15
-#define KMX61_MAG_ZOUT_L	0x16
-#define KMX61_MAG_ZOUT_H	0x17
-
-#define KMX61_REG_ODCNTL	0x2C
-#define KMX61_REG_STBY		0x29
-#define KMX61_REG_CTRL1		0x2A
-
-#define KMX61_ACC_STBY_BIT	BIT(0)
-#define KMX61_MAG_STBY_BIT	BIT(1)
-#define KMX61_ACT_STBY_BIT	BIT(7)
-
-#define KMX61_ALL_STBY		(KMX61_ACC_STBY_BIT | KMX61_MAG_STBY_BIT)
-
-#define KMX61_REG_CTRL1_GSEL0_SHIFT	0
-#define KMX61_REG_CTRL1_GSEL1_SHIFT	1
-#define KMX61_REG_CTRL1_GSEL0_MASK	0x01
-#define KMX61_REG_CTRL1_GSEL1_MASK	0x02
-
-#define KMX61_REG_CTRL1_BIT_RES		BIT(4)
-
-#define KMX61_ACC_ODR_SHIFT	0
-#define KMX61_MAG_ODR_SHIFT	4
-#define KMX61_ACC_ODR_MASK	0x0F
-#define KMX61_MAG_ODR_MASK	0xF0
-
-#define KMX61_SLEEP_DELAY_MS	2000
-
-#define KMX61_CHIP_ID		0x12
-
-struct kmx61_data {
-	struct i2c_client *client;
-
-	/* serialize access to non-atomic ops, e.g set_mode */
-	struct mutex lock;
-	u8 range;
-	u8 odr_bits;
-
-	/* standby state */
-	u8 acc_stby;
-	u8 mag_stby;
-
-	/* power state */
-	bool acc_ps;
-	bool mag_ps;
-};
-
-enum kmx61_range {
-	KMX61_RANGE_2G,
-	KMX61_RANGE_4G,
-	KMX61_RANGE_8G,
-};
-
-enum kmx61_scan {
-	KMX61_SCAN_ACC_X,
-	KMX61_SCAN_ACC_Y,
-	KMX61_SCAN_ACC_Z,
-	KMX61_SCAN_TEMP,
-	KMX61_SCAN_MAG_X,
-	KMX61_SCAN_MAG_Y,
-	KMX61_SCAN_MAG_Z,
-};
-
-static const struct {
-	u16 uscale;
-	u8 gsel0;
-	u8 gsel1;
-} kmx61_scale_table[] = {
-	{9582, 0, 0},
-	{19163, 1, 0},
-	{38326, 0, 1},
-};
-
-/* KMX61 devices */
-#define KMX61_ACC	0x01
-#define KMX61_MAG	0x02
-
-static const struct {
-	int val;
-	int val2;
-	u8 odr_bits;
-} kmx61_samp_freq_table[] = { {12, 500000, 0x00},
-			{25, 0, 0x01},
-			{50, 0, 0x02},
-			{100, 0, 0x03},
-			{200, 0, 0x04},
-			{400, 0, 0x05},
-			{800, 0, 0x06},
-			{1600, 0, 0x07},
-			{0, 781000, 0x08},
-			{1, 563000, 0x09},
-			{3, 125000, 0x0A},
-			{6, 250000, 0x0B} };
-
-static IIO_CONST_ATTR(accel_scale_available, "0.009582 0.019163 0.038326");
-static IIO_CONST_ATTR(magn_scale_available, "0.001465");
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
-	"0.781000 1.563000 3.125000 6.250000 12.500000 25 50 100 200 400 800");
-
-static struct attribute *kmx61_attributes[] = {
-	&iio_const_attr_accel_scale_available.dev_attr.attr,
-	&iio_const_attr_magn_scale_available.dev_attr.attr,
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group kmx61_attribute_group = {
-	.attrs = kmx61_attributes,
-};
-
-#define KMX61_ACC_CHAN(_axis, _index) { \
-	.type = IIO_ACCEL, \
-	.modified = 1, \
-	.channel2 = IIO_MOD_ ## _axis, \
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
-	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
-				BIT(IIO_CHAN_INFO_SAMP_FREQ), \
-	.address = KMX61_ACC, \
-	.scan_index = _index, \
-	.scan_type = { \
-		.sign = 's', \
-		.realbits = 12, \
-		.storagebits = 16, \
-		.shift = 4, \
-		.endianness = IIO_LE, \
-	}, \
-}
-
-#define KMX61_MAG_CHAN(_axis, _index) { \
-	.type = IIO_MAGN, \
-	.modified = 1, \
-	.channel2 = IIO_MOD_ ## _axis, \
-	.address = KMX61_MAG, \
-	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \
-	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \
-				BIT(IIO_CHAN_INFO_SAMP_FREQ), \
-	.scan_index = _index, \
-	.scan_type = { \
-		.sign = 's', \
-		.realbits = 14, \
-		.storagebits = 16, \
-		.shift = 2, \
-		.endianness = IIO_LE, \
-	}, \
-}
-
-static const struct iio_chan_spec kmx61_channels[] = {
-	KMX61_ACC_CHAN(X, KMX61_SCAN_ACC_X),
-	KMX61_ACC_CHAN(Y, KMX61_SCAN_ACC_Y),
-	KMX61_ACC_CHAN(Z, KMX61_SCAN_ACC_Z),
-	KMX61_MAG_CHAN(X, KMX61_SCAN_MAG_X),
-	KMX61_MAG_CHAN(Y, KMX61_SCAN_MAG_Y),
-	KMX61_MAG_CHAN(Z, KMX61_SCAN_MAG_Z),
-};
-
-static int kmx61_convert_freq_to_bit(int val, int val2)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(kmx61_samp_freq_table); i++)
-		if (val == kmx61_samp_freq_table[i].val &&
-		    val2 == kmx61_samp_freq_table[i].val2)
-			return kmx61_samp_freq_table[i].odr_bits;
-	return -EINVAL;
-}
-/**
- * kmx61_set_mode() - set KMX61 device operating mode
- * @data - kmx61 device private data pointer
- * @mode - bitmask, indicating operating mode for @device
- * @device - bitmask, indicating device for which @mode needs to be set
- * @update - update stby bits stored in device's private  @data
- *
- * For each sensor (accelerometer/magnetometer) there are two operating modes
- * STANDBY and OPERATION. Neither accel nor magn can be disabled independently
- * if they are both enabled. Internal sensors state is saved in acc_stby and
- * mag_stby members of driver's private @data.
- */
-static int kmx61_set_mode(struct kmx61_data *data, u8 mode, u8 device,
-			  bool update)
-{
-	int ret;
-	int acc_stby = -1, mag_stby = -1;
-
-	ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_STBY);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_stby\n");
-		return ret;
-	}
-	if (device & KMX61_ACC) {
-		if (mode & KMX61_ACC_STBY_BIT) {
-			ret |= KMX61_ACC_STBY_BIT;
-			acc_stby = 1;
-		} else {
-			ret &= ~KMX61_ACC_STBY_BIT;
-			acc_stby = 0;
-		}
-	}
-
-	if (device & KMX61_MAG) {
-		if (mode & KMX61_MAG_STBY_BIT) {
-			ret |= KMX61_MAG_STBY_BIT;
-			mag_stby = 1;
-		} else {
-			ret &= ~KMX61_MAG_STBY_BIT;
-			mag_stby = 0;
-		}
-	}
-
-	ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_STBY, ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_stby\n");
-		return ret;
-	}
-
-	if (acc_stby != -1 && update)
-		data->acc_stby = !!acc_stby;
-	if (mag_stby != -1 && update)
-		data->mag_stby = !!mag_stby;
-
-	return ret;
-}
-
-static int kmx61_get_mode(struct kmx61_data *data, u8 *mode, u8 device)
-{
-	int ret;
-
-	ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_STBY);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_stby\n");
-		return ret;
-	}
-	*mode = 0;
-
-	if (device & KMX61_ACC) {
-		if (ret & KMX61_ACC_STBY_BIT)
-			*mode |= KMX61_ACC_STBY_BIT;
-		else
-			*mode &= ~KMX61_ACC_STBY_BIT;
-	}
-
-	if (device & KMX61_MAG) {
-		if (ret & KMX61_MAG_STBY_BIT)
-			*mode |= KMX61_MAG_STBY_BIT;
-		else
-			*mode &= ~KMX61_MAG_STBY_BIT;
-	}
-
-	return 0;
-}
-
-static int kmx61_set_odr(struct kmx61_data *data, int val, int val2, u8 device)
-{
-	int ret;
-	u8 mode;
-	int lodr_bits, odr_bits;
-
-	ret = kmx61_get_mode(data, &mode, KMX61_ACC | KMX61_MAG);
-	if (ret < 0)
-		return ret;
-
-	lodr_bits = kmx61_convert_freq_to_bit(val, val2);
-	if (lodr_bits < 0)
-		return lodr_bits;
-
-	/* To change ODR, accel and magn must be in STDBY */
-	ret = kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG,
-			     true);
-	if (ret < 0)
-		return ret;
-
-	odr_bits = 0;
-	if (device & KMX61_ACC)
-		odr_bits |= lodr_bits;
-	if (device & KMX61_MAG)
-		odr_bits |= (lodr_bits << KMX61_MAG_ODR_SHIFT);
-
-	ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_ODCNTL,
-					odr_bits);
-	if (ret < 0)
-		return ret;
-
-	ret = kmx61_set_mode(data, mode, KMX61_ACC | KMX61_MAG, true);
-	if (ret < 0)
-		return ret;
-
-	data->odr_bits = lodr_bits;
-
-	return 0;
-}
-
-static
-int kmx61_get_odr(struct kmx61_data *data, int *val, int *val2, u8 device)
-{	int i;
-	u8 lodr_bits;
-
-	if (device & KMX61_ACC)
-		lodr_bits = (data->odr_bits >> KMX61_ACC_ODR_SHIFT) &
-			     KMX61_ACC_ODR_MASK;
-	else if (device & KMX61_MAG)
-		lodr_bits = (data->odr_bits >> KMX61_MAG_ODR_SHIFT) &
-			     KMX61_MAG_ODR_MASK;
-	else
-		return -EINVAL;
-
-	for (i = 0; i < ARRAY_SIZE(kmx61_samp_freq_table); i++)
-		if (lodr_bits == kmx61_samp_freq_table[i].odr_bits) {
-			*val = kmx61_samp_freq_table[i].val;
-			*val2 = kmx61_samp_freq_table[i].val2;
-			return 0;
-		}
-	return -EINVAL;
-}
-
-static int kmx61_set_range(struct kmx61_data *data, int range)
-{
-	int ret;
-
-	ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_CTRL1);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_ctrl1\n");
-		return ret;
-	}
-
-	ret &= ~(KMX61_REG_CTRL1_GSEL0_MASK | KMX61_REG_CTRL1_GSEL1_MASK);
-	ret |= kmx61_scale_table[range].gsel0 << KMX61_REG_CTRL1_GSEL0_SHIFT;
-	ret |= kmx61_scale_table[range].gsel1 << KMX61_REG_CTRL1_GSEL1_SHIFT;
-
-	ret = i2c_smbus_write_byte_data(data->client, KMX61_REG_CTRL1, ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_ctrl1\n");
-		return ret;
-	}
-
-	data->range = range;
-
-	return 0;
-}
-
-static int kmx61_set_scale(struct kmx61_data *data, int uscale)
-{
-	int ret, i;
-	u8  mode;
-
-	for (i = 0; i < ARRAY_SIZE(kmx61_scale_table); i++) {
-		if (kmx61_scale_table[i].uscale == uscale) {
-			ret = kmx61_get_mode(data, &mode,
-					     KMX61_ACC | KMX61_MAG);
-			if (ret < 0)
-				return ret;
-
-			ret = kmx61_set_mode(data, KMX61_ALL_STBY,
-					     KMX61_ACC | KMX61_MAG, true);
-			if (ret < 0)
-				return ret;
-
-			ret = kmx61_set_range(data, i);
-			if (ret < 0)
-				return ret;
-
-			return  kmx61_set_mode(data, mode,
-					       KMX61_ACC | KMX61_MAG, true);
-		}
-	}
-	return -EINVAL;
-}
-
-static int kmx61_chip_init(struct kmx61_data *data)
-{
-	int ret;
-
-	ret = i2c_smbus_read_byte_data(data->client, KMX61_REG_WHO_AM_I);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading who_am_i\n");
-		return ret;
-	}
-
-	if (ret != KMX61_CHIP_ID) {
-		dev_err(&data->client->dev,
-			"Wrong chip id, got %x expected %x\n",
-			 ret, KMX61_CHIP_ID);
-		return -EINVAL;
-	}
-
-	/* set accel 12bit, 4g range */
-	ret = kmx61_set_range(data, KMX61_RANGE_4G);
-	if (ret < 0)
-		return ret;
-
-	/* set acc/magn to OPERATION mode */
-	ret = kmx61_set_mode(data, 0, KMX61_ACC | KMX61_MAG, true);
-	if (ret < 0)
-		return ret;
-
-	return 0;
-}
-/**
- * kmx61_set_power_state() - set power state for kmx61 @device
- * @data - kmx61 device private pointer
- * @on - power state to be set for @device
- * @device - bitmask indicating device for which @on state needs to be set
- *
- * Notice that when ACC power state needs to be set to ON and MAG is in
- * OPERATION then we know that kmx61_runtime_resume was already called
- * so we must set ACC OPERATION mode here. The same happens when MAG power
- * state needs to be set to ON and ACC is in OPERATION.
- */
-static int kmx61_set_power_state(struct kmx61_data *data, bool on, u8 device)
-{
-#ifdef CONFIG_PM_RUNTIME
-	int ret;
-
-	if (device & KMX61_ACC) {
-		if (on && !data->acc_ps && !data->mag_stby)
-			kmx61_set_mode(data, 0, KMX61_ACC, true);
-		data->acc_ps = on;
-	}
-	if (device & KMX61_MAG) {
-		if (on && !data->mag_ps && !data->acc_stby)
-			kmx61_set_mode(data, 0, KMX61_MAG, true);
-		data->mag_ps = on;
-	}
-
-	if (on) {
-		ret = pm_runtime_get_sync(&data->client->dev);
-	} else {
-		pm_runtime_mark_last_busy(&data->client->dev);
-		ret = pm_runtime_put_autosuspend(&data->client->dev);
-	}
-	if (ret < 0) {
-		dev_err(&data->client->dev,
-			"Failed: kmx61_set_power_state for %d, ret %d\n",
-			on, ret);
-		return ret;
-	}
-#endif
-	return 0;
-}
-
-static int kmx61_read_measurement(struct kmx61_data *data, int base, int offset)
-{
-	int ret;
-	u8 reg = base + offset * 2;
-
-	ret = i2c_smbus_read_word_data(data->client, reg);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "failed to read reg at %x\n", reg);
-		return ret;
-	}
-
-	return ret;
-}
-
-static int kmx61_read_raw(struct iio_dev *indio_dev,
-			      struct iio_chan_spec const *chan, int *val,
-			      int *val2, long mask)
-{
-	struct kmx61_data *data = iio_priv(indio_dev);
-	int ret;
-	u8 base_reg;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		switch (chan->type) {
-		case IIO_ACCEL:
-		case IIO_MAGN:
-			base_reg = KMX61_ACC_XOUT_L;
-			break;
-		default:
-			return -EINVAL;
-		}
-		mutex_lock(&data->lock);
-
-		kmx61_set_power_state(data, true, chan->address);
-		ret = kmx61_read_measurement(data, base_reg, chan->scan_index);
-		if (ret < 0) {
-			kmx61_set_power_state(data, false, chan->address);
-			mutex_unlock(&data->lock);
-			return ret;
-		}
-		*val = sign_extend32(ret >> chan->scan_type.shift,
-				     chan->scan_type.realbits - 1);
-		kmx61_set_power_state(data, false, chan->address);
-
-		mutex_unlock(&data->lock);
-		return IIO_VAL_INT;
-	case IIO_CHAN_INFO_SCALE:
-		switch (chan->type) {
-		case IIO_ACCEL:
-			*val = 0;
-			*val2 = kmx61_scale_table[data->range].uscale;
-			return IIO_VAL_INT_PLUS_MICRO;
-		case IIO_MAGN:
-			/* 14 bits res, 1465 microGauss per magn count */
-			*val = 0;
-			*val2 = 1465;
-			return IIO_VAL_INT_PLUS_MICRO;
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (chan->type != IIO_ACCEL && chan->type != IIO_MAGN)
-			return -EINVAL;
-
-		mutex_lock(&data->lock);
-		ret = kmx61_get_odr(data, val, val2, chan->address);
-		mutex_unlock(&data->lock);
-		if (ret)
-			return -EINVAL;
-		return IIO_VAL_INT_PLUS_MICRO;
-	}
-	return -EINVAL;
-}
-
-static int kmx61_write_raw(struct iio_dev *indio_dev,
-			       struct iio_chan_spec const *chan, int val,
-			       int val2, long mask)
-{
-	struct kmx61_data *data = iio_priv(indio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		if (chan->type != IIO_ACCEL && chan->type != IIO_MAGN)
-			return -EINVAL;
-
-		mutex_lock(&data->lock);
-		ret = kmx61_set_odr(data, val, val2, chan->address);
-		mutex_unlock(&data->lock);
-		return ret;
-	case IIO_CHAN_INFO_SCALE:
-		switch (chan->type) {
-		case IIO_ACCEL:
-			if (val != 0)
-				return -EINVAL;
-			mutex_lock(&data->lock);
-			ret = kmx61_set_scale(data, val2);
-			mutex_unlock(&data->lock);
-			return ret;
-		default:
-			return -EINVAL;
-		}
-		return ret;
-	default:
-		return -EINVAL;
-	}
-	return ret;
-}
-
-static const struct iio_info kmx61_info = {
-	.driver_module		= THIS_MODULE,
-	.read_raw		= kmx61_read_raw,
-	.write_raw		= kmx61_write_raw,
-	.attrs			= &kmx61_attribute_group,
-};
-
-static int kmx61_probe(struct i2c_client *client,
-		       const struct i2c_device_id *id)
-{
-	struct kmx61_data *data;
-	struct iio_dev *indio_dev;
-	int ret;
-	const char *name = NULL;
-
-	indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
-	if (!indio_dev)
-		return -ENOMEM;
-
-	data = iio_priv(indio_dev);
-	i2c_set_clientdata(client, indio_dev);
-	data->client = client;
-
-	if (id)
-		name = id->name;
-
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->channels = kmx61_channels;
-	indio_dev->num_channels = ARRAY_SIZE(kmx61_channels);
-	indio_dev->name = name;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->info = &kmx61_info;
-
-	mutex_init(&data->lock);
-
-	ret = kmx61_chip_init(data);
-	if (ret < 0)
-		return ret;
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "Failed to register iio device\n");
-		goto err_iio_device_register;
-	}
-
-	ret = pm_runtime_set_active(&client->dev);
-	if (ret < 0)
-		goto err_pm_runtime_set_active;
-
-	pm_runtime_enable(&client->dev);
-	pm_runtime_set_autosuspend_delay(&client->dev, KMX61_SLEEP_DELAY_MS);
-	pm_runtime_use_autosuspend(&client->dev);
-
-	return 0;
-
-err_pm_runtime_set_active:
-	iio_device_unregister(indio_dev);
-err_iio_device_register:
-	kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, true);
-	return ret;
-}
-
-static int kmx61_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct kmx61_data *data = iio_priv(indio_dev);
-	int ret;
-
-	pm_runtime_disable(&client->dev);
-	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
-
-	iio_device_unregister(indio_dev);
-
-	mutex_lock(&data->lock);
-	ret = kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, true);
-	mutex_unlock(&data->lock);
-
-	return ret;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int kmx61_suspend(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct kmx61_data *data = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&data->lock);
-	ret = kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG,
-			     false);
-	mutex_unlock(&data->lock);
-
-	return ret;
-}
-
-static int kmx61_resume(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct kmx61_data *data = iio_priv(indio_dev);
-	u8 stby = 0;
-
-	if (data->acc_stby)
-		stby |= KMX61_ACC_STBY_BIT;
-	if (data->mag_stby)
-		stby |= KMX61_MAG_STBY_BIT;
-
-	return kmx61_set_mode(data, stby, KMX61_ACC | KMX61_MAG, true);
-}
-#endif
-
-#ifdef CONFIG_PM_RUNTIME
-static int kmx61_runtime_suspend(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct kmx61_data *data = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&data->lock);
-	ret = kmx61_set_mode(data, KMX61_ALL_STBY, KMX61_ACC | KMX61_MAG, true);
-	mutex_unlock(&data->lock);
-
-	return ret;
-}
-
-static int kmx61_runtime_resume(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct kmx61_data *data = iio_priv(indio_dev);
-	u8 stby = 0;
-
-	if (!data->acc_ps)
-		stby |= KMX61_ACC_STBY_BIT;
-	if (!data->mag_ps)
-		stby |= KMX61_MAG_STBY_BIT;
-
-	return kmx61_set_mode(data, stby, KMX61_ACC | KMX61_MAG, true);
-}
-#endif
-
-static const struct dev_pm_ops kmx61_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(kmx61_suspend, kmx61_resume)
-	SET_RUNTIME_PM_OPS(kmx61_runtime_suspend, kmx61_runtime_resume, NULL)
-};
-
-static const struct i2c_device_id kmx61_id[] = {
-	{"kmx611021", 0},
-	{}
-};
-
-MODULE_DEVICE_TABLE(i2c, kmx61_id);
-
-static struct i2c_driver kmx61_driver = {
-	.driver = {
-		.name = KMX61_DRV_NAME,
-		.pm = &kmx61_pm_ops,
-	},
-	.probe		= kmx61_probe,
-	.remove		= kmx61_remove,
-	.id_table	= kmx61_id,
-};
-
-module_i2c_driver(kmx61_driver);
-
-MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>");
-MODULE_DESCRIPTION("KMX61 accelerometer/magnetometer driver");
-MODULE_LICENSE("GPL v2");