Linux-libre 4.4-gnupck-4.4-gnu

1 files changed, 0 insertions, 1867 deletions

diff --git a/drivers/iio/accel/bmc150-accel.c b/drivers/iio/accel/bmc150-accel.c
deleted file mode 100644
index 0104cdef8..000000000
--- a/drivers/iio/accel/bmc150-accel.c
+++ /dev/null
@@ -1,1867 +0,0 @@
-/*
- * 3-axis accelerometer driver supporting following Bosch-Sensortec chips:
- *  - BMC150
- *  - BMI055
- *  - BMA255
- *  - BMA250E
- *  - BMA222E
- *  - BMA280
- *
- * Copyright (c) 2014, Intel Corporation.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms and conditions of the GNU General Public License,
- * version 2, as published by the Free Software Foundation.
- *
- * This program is distributed in the hope it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
- * more details.
- */
-
-#include <linux/module.h>
-#include <linux/i2c.h>
-#include <linux/interrupt.h>
-#include <linux/delay.h>
-#include <linux/slab.h>
-#include <linux/acpi.h>
-#include <linux/gpio/consumer.h>
-#include <linux/pm.h>
-#include <linux/pm_runtime.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/iio/buffer.h>
-#include <linux/iio/events.h>
-#include <linux/iio/trigger.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-
-#define BMC150_ACCEL_DRV_NAME			"bmc150_accel"
-#define BMC150_ACCEL_IRQ_NAME			"bmc150_accel_event"
-#define BMC150_ACCEL_GPIO_NAME			"bmc150_accel_int"
-
-#define BMC150_ACCEL_REG_CHIP_ID		0x00
-
-#define BMC150_ACCEL_REG_INT_STATUS_2		0x0B
-#define BMC150_ACCEL_ANY_MOTION_MASK		0x07
-#define BMC150_ACCEL_ANY_MOTION_BIT_X		BIT(0)
-#define BMC150_ACCEL_ANY_MOTION_BIT_Y		BIT(1)
-#define BMC150_ACCEL_ANY_MOTION_BIT_Z		BIT(2)
-#define BMC150_ACCEL_ANY_MOTION_BIT_SIGN	BIT(3)
-
-#define BMC150_ACCEL_REG_PMU_LPW		0x11
-#define BMC150_ACCEL_PMU_MODE_MASK		0xE0
-#define BMC150_ACCEL_PMU_MODE_SHIFT		5
-#define BMC150_ACCEL_PMU_BIT_SLEEP_DUR_MASK	0x17
-#define BMC150_ACCEL_PMU_BIT_SLEEP_DUR_SHIFT	1
-
-#define BMC150_ACCEL_REG_PMU_RANGE		0x0F
-
-#define BMC150_ACCEL_DEF_RANGE_2G		0x03
-#define BMC150_ACCEL_DEF_RANGE_4G		0x05
-#define BMC150_ACCEL_DEF_RANGE_8G		0x08
-#define BMC150_ACCEL_DEF_RANGE_16G		0x0C
-
-/* Default BW: 125Hz */
-#define BMC150_ACCEL_REG_PMU_BW		0x10
-#define BMC150_ACCEL_DEF_BW			125
-
-#define BMC150_ACCEL_REG_INT_MAP_0		0x19
-#define BMC150_ACCEL_INT_MAP_0_BIT_SLOPE	BIT(2)
-
-#define BMC150_ACCEL_REG_INT_MAP_1		0x1A
-#define BMC150_ACCEL_INT_MAP_1_BIT_DATA		BIT(0)
-#define BMC150_ACCEL_INT_MAP_1_BIT_FWM		BIT(1)
-#define BMC150_ACCEL_INT_MAP_1_BIT_FFULL	BIT(2)
-
-#define BMC150_ACCEL_REG_INT_RST_LATCH		0x21
-#define BMC150_ACCEL_INT_MODE_LATCH_RESET	0x80
-#define BMC150_ACCEL_INT_MODE_LATCH_INT	0x0F
-#define BMC150_ACCEL_INT_MODE_NON_LATCH_INT	0x00
-
-#define BMC150_ACCEL_REG_INT_EN_0		0x16
-#define BMC150_ACCEL_INT_EN_BIT_SLP_X		BIT(0)
-#define BMC150_ACCEL_INT_EN_BIT_SLP_Y		BIT(1)
-#define BMC150_ACCEL_INT_EN_BIT_SLP_Z		BIT(2)
-
-#define BMC150_ACCEL_REG_INT_EN_1		0x17
-#define BMC150_ACCEL_INT_EN_BIT_DATA_EN		BIT(4)
-#define BMC150_ACCEL_INT_EN_BIT_FFULL_EN	BIT(5)
-#define BMC150_ACCEL_INT_EN_BIT_FWM_EN		BIT(6)
-
-#define BMC150_ACCEL_REG_INT_OUT_CTRL		0x20
-#define BMC150_ACCEL_INT_OUT_CTRL_INT1_LVL	BIT(0)
-
-#define BMC150_ACCEL_REG_INT_5			0x27
-#define BMC150_ACCEL_SLOPE_DUR_MASK		0x03
-
-#define BMC150_ACCEL_REG_INT_6			0x28
-#define BMC150_ACCEL_SLOPE_THRES_MASK		0xFF
-
-/* Slope duration in terms of number of samples */
-#define BMC150_ACCEL_DEF_SLOPE_DURATION		1
-/* in terms of multiples of g's/LSB, based on range */
-#define BMC150_ACCEL_DEF_SLOPE_THRESHOLD	1
-
-#define BMC150_ACCEL_REG_XOUT_L		0x02
-
-#define BMC150_ACCEL_MAX_STARTUP_TIME_MS	100
-
-/* Sleep Duration values */
-#define BMC150_ACCEL_SLEEP_500_MICRO		0x05
-#define BMC150_ACCEL_SLEEP_1_MS		0x06
-#define BMC150_ACCEL_SLEEP_2_MS		0x07
-#define BMC150_ACCEL_SLEEP_4_MS		0x08
-#define BMC150_ACCEL_SLEEP_6_MS		0x09
-#define BMC150_ACCEL_SLEEP_10_MS		0x0A
-#define BMC150_ACCEL_SLEEP_25_MS		0x0B
-#define BMC150_ACCEL_SLEEP_50_MS		0x0C
-#define BMC150_ACCEL_SLEEP_100_MS		0x0D
-#define BMC150_ACCEL_SLEEP_500_MS		0x0E
-#define BMC150_ACCEL_SLEEP_1_SEC		0x0F
-
-#define BMC150_ACCEL_REG_TEMP			0x08
-#define BMC150_ACCEL_TEMP_CENTER_VAL		24
-
-#define BMC150_ACCEL_AXIS_TO_REG(axis)	(BMC150_ACCEL_REG_XOUT_L + (axis * 2))
-#define BMC150_AUTO_SUSPEND_DELAY_MS		2000
-
-#define BMC150_ACCEL_REG_FIFO_STATUS		0x0E
-#define BMC150_ACCEL_REG_FIFO_CONFIG0		0x30
-#define BMC150_ACCEL_REG_FIFO_CONFIG1		0x3E
-#define BMC150_ACCEL_REG_FIFO_DATA		0x3F
-#define BMC150_ACCEL_FIFO_LENGTH		32
-
-enum bmc150_accel_axis {
-	AXIS_X,
-	AXIS_Y,
-	AXIS_Z,
-};
-
-enum bmc150_power_modes {
-	BMC150_ACCEL_SLEEP_MODE_NORMAL,
-	BMC150_ACCEL_SLEEP_MODE_DEEP_SUSPEND,
-	BMC150_ACCEL_SLEEP_MODE_LPM,
-	BMC150_ACCEL_SLEEP_MODE_SUSPEND = 0x04,
-};
-
-struct bmc150_scale_info {
-	int scale;
-	u8 reg_range;
-};
-
-struct bmc150_accel_chip_info {
-	const char *name;
-	u8 chip_id;
-	const struct iio_chan_spec *channels;
-	int num_channels;
-	const struct bmc150_scale_info scale_table[4];
-};
-
-struct bmc150_accel_interrupt {
-	const struct bmc150_accel_interrupt_info *info;
-	atomic_t users;
-};
-
-struct bmc150_accel_trigger {
-	struct bmc150_accel_data *data;
-	struct iio_trigger *indio_trig;
-	int (*setup)(struct bmc150_accel_trigger *t, bool state);
-	int intr;
-	bool enabled;
-};
-
-enum bmc150_accel_interrupt_id {
-	BMC150_ACCEL_INT_DATA_READY,
-	BMC150_ACCEL_INT_ANY_MOTION,
-	BMC150_ACCEL_INT_WATERMARK,
-	BMC150_ACCEL_INTERRUPTS,
-};
-
-enum bmc150_accel_trigger_id {
-	BMC150_ACCEL_TRIGGER_DATA_READY,
-	BMC150_ACCEL_TRIGGER_ANY_MOTION,
-	BMC150_ACCEL_TRIGGERS,
-};
-
-struct bmc150_accel_data {
-	struct i2c_client *client;
-	struct bmc150_accel_interrupt interrupts[BMC150_ACCEL_INTERRUPTS];
-	atomic_t active_intr;
-	struct bmc150_accel_trigger triggers[BMC150_ACCEL_TRIGGERS];
-	struct mutex mutex;
-	u8 fifo_mode, watermark;
-	s16 buffer[8];
-	u8 bw_bits;
-	u32 slope_dur;
-	u32 slope_thres;
-	u32 range;
-	int ev_enable_state;
-	int64_t timestamp, old_timestamp; /* Only used in hw fifo mode. */
-	const struct bmc150_accel_chip_info *chip_info;
-};
-
-static const struct {
-	int val;
-	int val2;
-	u8 bw_bits;
-} bmc150_accel_samp_freq_table[] = { {15, 620000, 0x08},
-				     {31, 260000, 0x09},
-				     {62, 500000, 0x0A},
-				     {125, 0, 0x0B},
-				     {250, 0, 0x0C},
-				     {500, 0, 0x0D},
-				     {1000, 0, 0x0E},
-				     {2000, 0, 0x0F} };
-
-static const struct {
-	int bw_bits;
-	int msec;
-} bmc150_accel_sample_upd_time[] = { {0x08, 64},
-				     {0x09, 32},
-				     {0x0A, 16},
-				     {0x0B, 8},
-				     {0x0C, 4},
-				     {0x0D, 2},
-				     {0x0E, 1},
-				     {0x0F, 1} };
-
-static const struct {
-	int sleep_dur;
-	u8 reg_value;
-} bmc150_accel_sleep_value_table[] = { {0, 0},
-				       {500, BMC150_ACCEL_SLEEP_500_MICRO},
-				       {1000, BMC150_ACCEL_SLEEP_1_MS},
-				       {2000, BMC150_ACCEL_SLEEP_2_MS},
-				       {4000, BMC150_ACCEL_SLEEP_4_MS},
-				       {6000, BMC150_ACCEL_SLEEP_6_MS},
-				       {10000, BMC150_ACCEL_SLEEP_10_MS},
-				       {25000, BMC150_ACCEL_SLEEP_25_MS},
-				       {50000, BMC150_ACCEL_SLEEP_50_MS},
-				       {100000, BMC150_ACCEL_SLEEP_100_MS},
-				       {500000, BMC150_ACCEL_SLEEP_500_MS},
-				       {1000000, BMC150_ACCEL_SLEEP_1_SEC} };
-
-static int bmc150_accel_set_mode(struct bmc150_accel_data *data,
-				 enum bmc150_power_modes mode,
-				 int dur_us)
-{
-	int i;
-	int ret;
-	u8 lpw_bits;
-	int dur_val = -1;
-
-	if (dur_us > 0) {
-		for (i = 0; i < ARRAY_SIZE(bmc150_accel_sleep_value_table);
-									 ++i) {
-			if (bmc150_accel_sleep_value_table[i].sleep_dur ==
-									dur_us)
-				dur_val =
-				bmc150_accel_sleep_value_table[i].reg_value;
-		}
-	} else {
-		dur_val = 0;
-	}
-
-	if (dur_val < 0)
-		return -EINVAL;
-
-	lpw_bits = mode << BMC150_ACCEL_PMU_MODE_SHIFT;
-	lpw_bits |= (dur_val << BMC150_ACCEL_PMU_BIT_SLEEP_DUR_SHIFT);
-
-	dev_dbg(&data->client->dev, "Set Mode bits %x\n", lpw_bits);
-
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMC150_ACCEL_REG_PMU_LPW, lpw_bits);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmc150_accel_set_bw(struct bmc150_accel_data *data, int val,
-			       int val2)
-{
-	int i;
-	int ret;
-
-	for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table); ++i) {
-		if (bmc150_accel_samp_freq_table[i].val == val &&
-		    bmc150_accel_samp_freq_table[i].val2 == val2) {
-			ret = i2c_smbus_write_byte_data(
-				data->client,
-				BMC150_ACCEL_REG_PMU_BW,
-				bmc150_accel_samp_freq_table[i].bw_bits);
-			if (ret < 0)
-				return ret;
-
-			data->bw_bits =
-				bmc150_accel_samp_freq_table[i].bw_bits;
-			return 0;
-		}
-	}
-
-	return -EINVAL;
-}
-
-static int bmc150_accel_update_slope(struct bmc150_accel_data *data)
-{
-	int ret, val;
-
-	ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_6,
-					data->slope_thres);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_6\n");
-		return ret;
-	}
-
-	ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_INT_5);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_5\n");
-		return ret;
-	}
-
-	val = (ret & ~BMC150_ACCEL_SLOPE_DUR_MASK) | data->slope_dur;
-	ret = i2c_smbus_write_byte_data(data->client, BMC150_ACCEL_REG_INT_5,
-					val);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error write reg_int_5\n");
-		return ret;
-	}
-
-	dev_dbg(&data->client->dev, "%s: %x %x\n", __func__, data->slope_thres,
-		data->slope_dur);
-
-	return ret;
-}
-
-static int bmc150_accel_any_motion_setup(struct bmc150_accel_trigger *t,
-					 bool state)
-{
-	if (state)
-		return bmc150_accel_update_slope(t->data);
-
-	return 0;
-}
-
-static int bmc150_accel_get_bw(struct bmc150_accel_data *data, int *val,
-			       int *val2)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(bmc150_accel_samp_freq_table); ++i) {
-		if (bmc150_accel_samp_freq_table[i].bw_bits == data->bw_bits) {
-			*val = bmc150_accel_samp_freq_table[i].val;
-			*val2 = bmc150_accel_samp_freq_table[i].val2;
-			return IIO_VAL_INT_PLUS_MICRO;
-		}
-	}
-
-	return -EINVAL;
-}
-
-#ifdef CONFIG_PM
-static int bmc150_accel_get_startup_times(struct bmc150_accel_data *data)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(bmc150_accel_sample_upd_time); ++i) {
-		if (bmc150_accel_sample_upd_time[i].bw_bits == data->bw_bits)
-			return bmc150_accel_sample_upd_time[i].msec;
-	}
-
-	return BMC150_ACCEL_MAX_STARTUP_TIME_MS;
-}
-
-static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
-{
-	int ret;
-
-	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: bmc150_accel_set_power_state for %d\n", on);
-		if (on)
-			pm_runtime_put_noidle(&data->client->dev);
-
-		return ret;
-	}
-
-	return 0;
-}
-#else
-static int bmc150_accel_set_power_state(struct bmc150_accel_data *data, bool on)
-{
-	return 0;
-}
-#endif
-
-static const struct bmc150_accel_interrupt_info {
-	u8 map_reg;
-	u8 map_bitmask;
-	u8 en_reg;
-	u8 en_bitmask;
-} bmc150_accel_interrupts[BMC150_ACCEL_INTERRUPTS] = {
-	{ /* data ready interrupt */
-		.map_reg = BMC150_ACCEL_REG_INT_MAP_1,
-		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_DATA,
-		.en_reg = BMC150_ACCEL_REG_INT_EN_1,
-		.en_bitmask = BMC150_ACCEL_INT_EN_BIT_DATA_EN,
-	},
-	{  /* motion interrupt */
-		.map_reg = BMC150_ACCEL_REG_INT_MAP_0,
-		.map_bitmask = BMC150_ACCEL_INT_MAP_0_BIT_SLOPE,
-		.en_reg = BMC150_ACCEL_REG_INT_EN_0,
-		.en_bitmask =  BMC150_ACCEL_INT_EN_BIT_SLP_X |
-			BMC150_ACCEL_INT_EN_BIT_SLP_Y |
-			BMC150_ACCEL_INT_EN_BIT_SLP_Z
-	},
-	{ /* fifo watermark interrupt */
-		.map_reg = BMC150_ACCEL_REG_INT_MAP_1,
-		.map_bitmask = BMC150_ACCEL_INT_MAP_1_BIT_FWM,
-		.en_reg = BMC150_ACCEL_REG_INT_EN_1,
-		.en_bitmask = BMC150_ACCEL_INT_EN_BIT_FWM_EN,
-	},
-};
-
-static void bmc150_accel_interrupts_setup(struct iio_dev *indio_dev,
-					  struct bmc150_accel_data *data)
-{
-	int i;
-
-	for (i = 0; i < BMC150_ACCEL_INTERRUPTS; i++)
-		data->interrupts[i].info = &bmc150_accel_interrupts[i];
-}
-
-static int bmc150_accel_set_interrupt(struct bmc150_accel_data *data, int i,
-				      bool state)
-{
-	struct bmc150_accel_interrupt *intr = &data->interrupts[i];
-	const struct bmc150_accel_interrupt_info *info = intr->info;
-	int ret;
-
-	if (state) {
-		if (atomic_inc_return(&intr->users) > 1)
-			return 0;
-	} else {
-		if (atomic_dec_return(&intr->users) > 0)
-			return 0;
-	}
-
-	/*
-	 * We will expect the enable and disable to do operation in reverse
-	 * order. This will happen here anyway, as our resume operation uses
-	 * sync mode runtime pm calls. The suspend operation will be delayed
-	 * by autosuspend delay.
-	 * So the disable operation will still happen in reverse order of
-	 * enable operation. When runtime pm is disabled the mode is always on,
-	 * so sequence doesn't matter.
-	 */
-	ret = bmc150_accel_set_power_state(data, state);
-	if (ret < 0)
-		return ret;
-
-	/* map the interrupt to the appropriate pins */
-	ret = i2c_smbus_read_byte_data(data->client, info->map_reg);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_map\n");
-		goto out_fix_power_state;
-	}
-	if (state)
-		ret |= info->map_bitmask;
-	else
-		ret &= ~info->map_bitmask;
-
-	ret = i2c_smbus_write_byte_data(data->client, info->map_reg,
-					ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_map\n");
-		goto out_fix_power_state;
-	}
-
-	/* enable/disable the interrupt */
-	ret = i2c_smbus_read_byte_data(data->client, info->en_reg);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_en\n");
-		goto out_fix_power_state;
-	}
-
-	if (state)
-		ret |= info->en_bitmask;
-	else
-		ret &= ~info->en_bitmask;
-
-	ret = i2c_smbus_write_byte_data(data->client, info->en_reg, ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_en\n");
-		goto out_fix_power_state;
-	}
-
-	if (state)
-		atomic_inc(&data->active_intr);
-	else
-		atomic_dec(&data->active_intr);
-
-	return 0;
-
-out_fix_power_state:
-	bmc150_accel_set_power_state(data, false);
-	return ret;
-}
-
-static int bmc150_accel_set_scale(struct bmc150_accel_data *data, int val)
-{
-	int ret, i;
-
-	for (i = 0; i < ARRAY_SIZE(data->chip_info->scale_table); ++i) {
-		if (data->chip_info->scale_table[i].scale == val) {
-			ret = i2c_smbus_write_byte_data(
-				     data->client,
-				     BMC150_ACCEL_REG_PMU_RANGE,
-				     data->chip_info->scale_table[i].reg_range);
-			if (ret < 0) {
-				dev_err(&data->client->dev,
-					"Error writing pmu_range\n");
-				return ret;
-			}
-
-			data->range = data->chip_info->scale_table[i].reg_range;
-			return 0;
-		}
-	}
-
-	return -EINVAL;
-}
-
-static int bmc150_accel_get_temp(struct bmc150_accel_data *data, int *val)
-{
-	int ret;
-
-	mutex_lock(&data->mutex);
-
-	ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_TEMP);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_temp\n");
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-	*val = sign_extend32(ret, 7);
-
-	mutex_unlock(&data->mutex);
-
-	return IIO_VAL_INT;
-}
-
-static int bmc150_accel_get_axis(struct bmc150_accel_data *data,
-				 struct iio_chan_spec const *chan,
-				 int *val)
-{
-	int ret;
-	int axis = chan->scan_index;
-
-	mutex_lock(&data->mutex);
-	ret = bmc150_accel_set_power_state(data, true);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	ret = i2c_smbus_read_word_data(data->client,
-				       BMC150_ACCEL_AXIS_TO_REG(axis));
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading axis %d\n", axis);
-		bmc150_accel_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-	*val = sign_extend32(ret >> chan->scan_type.shift,
-			     chan->scan_type.realbits - 1);
-	ret = bmc150_accel_set_power_state(data, false);
-	mutex_unlock(&data->mutex);
-	if (ret < 0)
-		return ret;
-
-	return IIO_VAL_INT;
-}
-
-static int bmc150_accel_read_raw(struct iio_dev *indio_dev,
-				 struct iio_chan_spec const *chan,
-				 int *val, int *val2, long mask)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		switch (chan->type) {
-		case IIO_TEMP:
-			return bmc150_accel_get_temp(data, val);
-		case IIO_ACCEL:
-			if (iio_buffer_enabled(indio_dev))
-				return -EBUSY;
-			else
-				return bmc150_accel_get_axis(data, chan, val);
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_OFFSET:
-		if (chan->type == IIO_TEMP) {
-			*val = BMC150_ACCEL_TEMP_CENTER_VAL;
-			return IIO_VAL_INT;
-		} else {
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_SCALE:
-		*val = 0;
-		switch (chan->type) {
-		case IIO_TEMP:
-			*val2 = 500000;
-			return IIO_VAL_INT_PLUS_MICRO;
-		case IIO_ACCEL:
-		{
-			int i;
-			const struct bmc150_scale_info *si;
-			int st_size = ARRAY_SIZE(data->chip_info->scale_table);
-
-			for (i = 0; i < st_size; ++i) {
-				si = &data->chip_info->scale_table[i];
-				if (si->reg_range == data->range) {
-					*val2 = si->scale;
-					return IIO_VAL_INT_PLUS_MICRO;
-				}
-			}
-			return -EINVAL;
-		}
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		mutex_lock(&data->mutex);
-		ret = bmc150_accel_get_bw(data, val, val2);
-		mutex_unlock(&data->mutex);
-		return ret;
-	default:
-		return -EINVAL;
-	}
-}
-
-static int bmc150_accel_write_raw(struct iio_dev *indio_dev,
-				  struct iio_chan_spec const *chan,
-				  int val, int val2, long mask)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		mutex_lock(&data->mutex);
-		ret = bmc150_accel_set_bw(data, val, val2);
-		mutex_unlock(&data->mutex);
-		break;
-	case IIO_CHAN_INFO_SCALE:
-		if (val)
-			return -EINVAL;
-
-		mutex_lock(&data->mutex);
-		ret = bmc150_accel_set_scale(data, val2);
-		mutex_unlock(&data->mutex);
-		return ret;
-	default:
-		ret = -EINVAL;
-	}
-
-	return ret;
-}
-
-static int bmc150_accel_read_event(struct iio_dev *indio_dev,
-				   const struct iio_chan_spec *chan,
-				   enum iio_event_type type,
-				   enum iio_event_direction dir,
-				   enum iio_event_info info,
-				   int *val, int *val2)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	*val2 = 0;
-	switch (info) {
-	case IIO_EV_INFO_VALUE:
-		*val = data->slope_thres;
-		break;
-	case IIO_EV_INFO_PERIOD:
-		*val = data->slope_dur;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return IIO_VAL_INT;
-}
-
-static int bmc150_accel_write_event(struct iio_dev *indio_dev,
-				    const struct iio_chan_spec *chan,
-				    enum iio_event_type type,
-				    enum iio_event_direction dir,
-				    enum iio_event_info info,
-				    int val, int val2)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	if (data->ev_enable_state)
-		return -EBUSY;
-
-	switch (info) {
-	case IIO_EV_INFO_VALUE:
-		data->slope_thres = val & BMC150_ACCEL_SLOPE_THRES_MASK;
-		break;
-	case IIO_EV_INFO_PERIOD:
-		data->slope_dur = val & BMC150_ACCEL_SLOPE_DUR_MASK;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int bmc150_accel_read_event_config(struct iio_dev *indio_dev,
-					  const struct iio_chan_spec *chan,
-					  enum iio_event_type type,
-					  enum iio_event_direction dir)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	return data->ev_enable_state;
-}
-
-static int bmc150_accel_write_event_config(struct iio_dev *indio_dev,
-					   const struct iio_chan_spec *chan,
-					   enum iio_event_type type,
-					   enum iio_event_direction dir,
-					   int state)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret;
-
-	if (state == data->ev_enable_state)
-		return 0;
-
-	mutex_lock(&data->mutex);
-
-	ret = bmc150_accel_set_interrupt(data, BMC150_ACCEL_INT_ANY_MOTION,
-					 state);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	data->ev_enable_state = state;
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-static int bmc150_accel_validate_trigger(struct iio_dev *indio_dev,
-					 struct iio_trigger *trig)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int i;
-
-	for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
-		if (data->triggers[i].indio_trig == trig)
-			return 0;
-	}
-
-	return -EINVAL;
-}
-
-static ssize_t bmc150_accel_get_fifo_watermark(struct device *dev,
-					       struct device_attribute *attr,
-					       char *buf)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int wm;
-
-	mutex_lock(&data->mutex);
-	wm = data->watermark;
-	mutex_unlock(&data->mutex);
-
-	return sprintf(buf, "%d\n", wm);
-}
-
-static ssize_t bmc150_accel_get_fifo_state(struct device *dev,
-					   struct device_attribute *attr,
-					   char *buf)
-{
-	struct iio_dev *indio_dev = dev_to_iio_dev(dev);
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	bool state;
-
-	mutex_lock(&data->mutex);
-	state = data->fifo_mode;
-	mutex_unlock(&data->mutex);
-
-	return sprintf(buf, "%d\n", state);
-}
-
-static IIO_CONST_ATTR(hwfifo_watermark_min, "1");
-static IIO_CONST_ATTR(hwfifo_watermark_max,
-		      __stringify(BMC150_ACCEL_FIFO_LENGTH));
-static IIO_DEVICE_ATTR(hwfifo_enabled, S_IRUGO,
-		       bmc150_accel_get_fifo_state, NULL, 0);
-static IIO_DEVICE_ATTR(hwfifo_watermark, S_IRUGO,
-		       bmc150_accel_get_fifo_watermark, NULL, 0);
-
-static const struct attribute *bmc150_accel_fifo_attributes[] = {
-	&iio_const_attr_hwfifo_watermark_min.dev_attr.attr,
-	&iio_const_attr_hwfifo_watermark_max.dev_attr.attr,
-	&iio_dev_attr_hwfifo_watermark.dev_attr.attr,
-	&iio_dev_attr_hwfifo_enabled.dev_attr.attr,
-	NULL,
-};
-
-static int bmc150_accel_set_watermark(struct iio_dev *indio_dev, unsigned val)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	if (val > BMC150_ACCEL_FIFO_LENGTH)
-		val = BMC150_ACCEL_FIFO_LENGTH;
-
-	mutex_lock(&data->mutex);
-	data->watermark = val;
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-/*
- * We must read at least one full frame in one burst, otherwise the rest of the
- * frame data is discarded.
- */
-static int bmc150_accel_fifo_transfer(const struct i2c_client *client,
-				      char *buffer, int samples)
-{
-	int sample_length = 3 * 2;
-	u8 reg_fifo_data = BMC150_ACCEL_REG_FIFO_DATA;
-	int ret = -EIO;
-
-	if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) {
-		struct i2c_msg msg[2] = {
-			{
-				.addr = client->addr,
-				.flags = 0,
-				.buf = &reg_fifo_data,
-				.len = sizeof(reg_fifo_data),
-			},
-			{
-				.addr = client->addr,
-				.flags = I2C_M_RD,
-				.buf = (u8 *)buffer,
-				.len = samples * sample_length,
-			}
-		};
-
-		ret = i2c_transfer(client->adapter, msg, 2);
-		if (ret != 2)
-			ret = -EIO;
-		else
-			ret = 0;
-	} else {
-		int i, step = I2C_SMBUS_BLOCK_MAX / sample_length;
-
-		for (i = 0; i < samples * sample_length; i += step) {
-			ret = i2c_smbus_read_i2c_block_data(client,
-							    reg_fifo_data, step,
-							    &buffer[i]);
-			if (ret != step) {
-				ret = -EIO;
-				break;
-			}
-
-			ret = 0;
-		}
-	}
-
-	if (ret)
-		dev_err(&client->dev, "Error transferring data from fifo\n");
-
-	return ret;
-}
-
-static int __bmc150_accel_fifo_flush(struct iio_dev *indio_dev,
-				     unsigned samples, bool irq)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret, i;
-	u8 count;
-	u16 buffer[BMC150_ACCEL_FIFO_LENGTH * 3];
-	int64_t tstamp;
-	uint64_t sample_period;
-
-	ret = i2c_smbus_read_byte_data(data->client,
-				       BMC150_ACCEL_REG_FIFO_STATUS);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_fifo_status\n");
-		return ret;
-	}
-
-	count = ret & 0x7F;
-
-	if (!count)
-		return 0;
-
-	/*
-	 * If we getting called from IRQ handler we know the stored timestamp is
-	 * fairly accurate for the last stored sample. Otherwise, if we are
-	 * called as a result of a read operation from userspace and hence
-	 * before the watermark interrupt was triggered, take a timestamp
-	 * now. We can fall anywhere in between two samples so the error in this
-	 * case is at most one sample period.
-	 */
-	if (!irq) {
-		data->old_timestamp = data->timestamp;
-		data->timestamp = iio_get_time_ns();
-	}
-
-	/*
-	 * Approximate timestamps for each of the sample based on the sampling
-	 * frequency, timestamp for last sample and number of samples.
-	 *
-	 * Note that we can't use the current bandwidth settings to compute the
-	 * sample period because the sample rate varies with the device
-	 * (e.g. between 31.70ms to 32.20ms for a bandwidth of 15.63HZ). That
-	 * small variation adds when we store a large number of samples and
-	 * creates significant jitter between the last and first samples in
-	 * different batches (e.g. 32ms vs 21ms).
-	 *
-	 * To avoid this issue we compute the actual sample period ourselves
-	 * based on the timestamp delta between the last two flush operations.
-	 */
-	sample_period = (data->timestamp - data->old_timestamp);
-	do_div(sample_period, count);
-	tstamp = data->timestamp - (count - 1) * sample_period;
-
-	if (samples && count > samples)
-		count = samples;
-
-	ret = bmc150_accel_fifo_transfer(data->client, (u8 *)buffer, count);
-	if (ret)
-		return ret;
-
-	/*
-	 * Ideally we want the IIO core to handle the demux when running in fifo
-	 * mode but not when running in triggered buffer mode. Unfortunately
-	 * this does not seem to be possible, so stick with driver demux for
-	 * now.
-	 */
-	for (i = 0; i < count; i++) {
-		u16 sample[8];
-		int j, bit;
-
-		j = 0;
-		for_each_set_bit(bit, indio_dev->active_scan_mask,
-				 indio_dev->masklength)
-			memcpy(&sample[j++], &buffer[i * 3 + bit], 2);
-
-		iio_push_to_buffers_with_timestamp(indio_dev, sample, tstamp);
-
-		tstamp += sample_period;
-	}
-
-	return count;
-}
-
-static int bmc150_accel_fifo_flush(struct iio_dev *indio_dev, unsigned samples)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&data->mutex);
-	ret = __bmc150_accel_fifo_flush(indio_dev, samples, false);
-	mutex_unlock(&data->mutex);
-
-	return ret;
-}
-
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL(
-		"15.620000 31.260000 62.50000 125 250 500 1000 2000");
-
-static struct attribute *bmc150_accel_attributes[] = {
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group bmc150_accel_attrs_group = {
-	.attrs = bmc150_accel_attributes,
-};
-
-static const struct iio_event_spec bmc150_accel_event = {
-		.type = IIO_EV_TYPE_ROC,
-		.dir = IIO_EV_DIR_EITHER,
-		.mask_separate = BIT(IIO_EV_INFO_VALUE) |
-				 BIT(IIO_EV_INFO_ENABLE) |
-				 BIT(IIO_EV_INFO_PERIOD)
-};
-
-#define BMC150_ACCEL_CHANNEL(_axis, bits) {				\
-	.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),		\
-	.scan_index = AXIS_##_axis,					\
-	.scan_type = {							\
-		.sign = 's',						\
-		.realbits = (bits),					\
-		.storagebits = 16,					\
-		.shift = 16 - (bits),					\
-	},								\
-	.event_spec = &bmc150_accel_event,				\
-	.num_event_specs = 1						\
-}
-
-#define BMC150_ACCEL_CHANNELS(bits) {					\
-	{								\
-		.type = IIO_TEMP,					\
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |		\
-				      BIT(IIO_CHAN_INFO_SCALE) |	\
-				      BIT(IIO_CHAN_INFO_OFFSET),	\
-		.scan_index = -1,					\
-	},								\
-	BMC150_ACCEL_CHANNEL(X, bits),					\
-	BMC150_ACCEL_CHANNEL(Y, bits),					\
-	BMC150_ACCEL_CHANNEL(Z, bits),					\
-	IIO_CHAN_SOFT_TIMESTAMP(3),					\
-}
-
-static const struct iio_chan_spec bma222e_accel_channels[] =
-	BMC150_ACCEL_CHANNELS(8);
-static const struct iio_chan_spec bma250e_accel_channels[] =
-	BMC150_ACCEL_CHANNELS(10);
-static const struct iio_chan_spec bmc150_accel_channels[] =
-	BMC150_ACCEL_CHANNELS(12);
-static const struct iio_chan_spec bma280_accel_channels[] =
-	BMC150_ACCEL_CHANNELS(14);
-
-enum {
-	bmc150,
-	bmi055,
-	bma255,
-	bma250e,
-	bma222e,
-	bma280,
-};
-
-static const struct bmc150_accel_chip_info bmc150_accel_chip_info_tbl[] = {
-	[bmc150] = {
-		.name = "BMC150A",
-		.chip_id = 0xFA,
-		.channels = bmc150_accel_channels,
-		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
-		.scale_table = { {9610, BMC150_ACCEL_DEF_RANGE_2G},
-				 {19122, BMC150_ACCEL_DEF_RANGE_4G},
-				 {38344, BMC150_ACCEL_DEF_RANGE_8G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-	[bmi055] = {
-		.name = "BMI055A",
-		.chip_id = 0xFA,
-		.channels = bmc150_accel_channels,
-		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
-		.scale_table = { {9610, BMC150_ACCEL_DEF_RANGE_2G},
-				 {19122, BMC150_ACCEL_DEF_RANGE_4G},
-				 {38344, BMC150_ACCEL_DEF_RANGE_8G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-	[bma255] = {
-		.name = "BMA0255",
-		.chip_id = 0xFA,
-		.channels = bmc150_accel_channels,
-		.num_channels = ARRAY_SIZE(bmc150_accel_channels),
-		.scale_table = { {9610, BMC150_ACCEL_DEF_RANGE_2G},
-				 {19122, BMC150_ACCEL_DEF_RANGE_4G},
-				 {38344, BMC150_ACCEL_DEF_RANGE_8G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-	[bma250e] = {
-		.name = "BMA250E",
-		.chip_id = 0xF9,
-		.channels = bma250e_accel_channels,
-		.num_channels = ARRAY_SIZE(bma250e_accel_channels),
-		.scale_table = { {38344, BMC150_ACCEL_DEF_RANGE_2G},
-				 {76590, BMC150_ACCEL_DEF_RANGE_4G},
-				 {153277, BMC150_ACCEL_DEF_RANGE_8G},
-				 {306457, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-	[bma222e] = {
-		.name = "BMA222E",
-		.chip_id = 0xF8,
-		.channels = bma222e_accel_channels,
-		.num_channels = ARRAY_SIZE(bma222e_accel_channels),
-		.scale_table = { {153277, BMC150_ACCEL_DEF_RANGE_2G},
-				 {306457, BMC150_ACCEL_DEF_RANGE_4G},
-				 {612915, BMC150_ACCEL_DEF_RANGE_8G},
-				 {1225831, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-	[bma280] = {
-		.name = "BMA0280",
-		.chip_id = 0xFB,
-		.channels = bma280_accel_channels,
-		.num_channels = ARRAY_SIZE(bma280_accel_channels),
-		.scale_table = { {2392, BMC150_ACCEL_DEF_RANGE_2G},
-				 {4785, BMC150_ACCEL_DEF_RANGE_4G},
-				 {9581, BMC150_ACCEL_DEF_RANGE_8G},
-				 {19152, BMC150_ACCEL_DEF_RANGE_16G} },
-	},
-};
-
-static const struct iio_info bmc150_accel_info = {
-	.attrs			= &bmc150_accel_attrs_group,
-	.read_raw		= bmc150_accel_read_raw,
-	.write_raw		= bmc150_accel_write_raw,
-	.read_event_value	= bmc150_accel_read_event,
-	.write_event_value	= bmc150_accel_write_event,
-	.write_event_config	= bmc150_accel_write_event_config,
-	.read_event_config	= bmc150_accel_read_event_config,
-	.driver_module		= THIS_MODULE,
-};
-
-static const struct iio_info bmc150_accel_info_fifo = {
-	.attrs			= &bmc150_accel_attrs_group,
-	.read_raw		= bmc150_accel_read_raw,
-	.write_raw		= bmc150_accel_write_raw,
-	.read_event_value	= bmc150_accel_read_event,
-	.write_event_value	= bmc150_accel_write_event,
-	.write_event_config	= bmc150_accel_write_event_config,
-	.read_event_config	= bmc150_accel_read_event_config,
-	.validate_trigger	= bmc150_accel_validate_trigger,
-	.hwfifo_set_watermark	= bmc150_accel_set_watermark,
-	.hwfifo_flush_to_buffer	= bmc150_accel_fifo_flush,
-	.driver_module		= THIS_MODULE,
-};
-
-static irqreturn_t bmc150_accel_trigger_handler(int irq, void *p)
-{
-	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->indio_dev;
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int bit, ret, i = 0;
-
-	mutex_lock(&data->mutex);
-	for_each_set_bit(bit, indio_dev->active_scan_mask,
-			 indio_dev->masklength) {
-		ret = i2c_smbus_read_word_data(data->client,
-					       BMC150_ACCEL_AXIS_TO_REG(bit));
-		if (ret < 0) {
-			mutex_unlock(&data->mutex);
-			goto err_read;
-		}
-		data->buffer[i++] = ret;
-	}
-	mutex_unlock(&data->mutex);
-
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
-					   pf->timestamp);
-err_read:
-	iio_trigger_notify_done(indio_dev->trig);
-
-	return IRQ_HANDLED;
-}
-
-static int bmc150_accel_trig_try_reen(struct iio_trigger *trig)
-{
-	struct bmc150_accel_trigger *t = iio_trigger_get_drvdata(trig);
-	struct bmc150_accel_data *data = t->data;
-	int ret;
-
-	/* new data interrupts don't need ack */
-	if (t == &t->data->triggers[BMC150_ACCEL_TRIGGER_DATA_READY])
-		return 0;
-
-	mutex_lock(&data->mutex);
-	/* clear any latched interrupt */
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMC150_ACCEL_REG_INT_RST_LATCH,
-					BMC150_ACCEL_INT_MODE_LATCH_INT |
-					BMC150_ACCEL_INT_MODE_LATCH_RESET);
-	mutex_unlock(&data->mutex);
-	if (ret < 0) {
-		dev_err(&data->client->dev,
-			"Error writing reg_int_rst_latch\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmc150_accel_trigger_set_state(struct iio_trigger *trig,
-					  bool state)
-{
-	struct bmc150_accel_trigger *t = iio_trigger_get_drvdata(trig);
-	struct bmc150_accel_data *data = t->data;
-	int ret;
-
-	mutex_lock(&data->mutex);
-
-	if (t->enabled == state) {
-		mutex_unlock(&data->mutex);
-		return 0;
-	}
-
-	if (t->setup) {
-		ret = t->setup(t, state);
-		if (ret < 0) {
-			mutex_unlock(&data->mutex);
-			return ret;
-		}
-	}
-
-	ret = bmc150_accel_set_interrupt(data, t->intr, state);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	t->enabled = state;
-
-	mutex_unlock(&data->mutex);
-
-	return ret;
-}
-
-static const struct iio_trigger_ops bmc150_accel_trigger_ops = {
-	.set_trigger_state = bmc150_accel_trigger_set_state,
-	.try_reenable = bmc150_accel_trig_try_reen,
-	.owner = THIS_MODULE,
-};
-
-static int bmc150_accel_handle_roc_event(struct iio_dev *indio_dev)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int dir;
-	int ret;
-
-	ret = i2c_smbus_read_byte_data(data->client,
-				       BMC150_ACCEL_REG_INT_STATUS_2);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_status_2\n");
-		return ret;
-	}
-
-	if (ret & BMC150_ACCEL_ANY_MOTION_BIT_SIGN)
-		dir = IIO_EV_DIR_FALLING;
-	else
-		dir = IIO_EV_DIR_RISING;
-
-	if (ret & BMC150_ACCEL_ANY_MOTION_BIT_X)
-		iio_push_event(indio_dev,
-			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
-						  0,
-						  IIO_MOD_X,
-						  IIO_EV_TYPE_ROC,
-						  dir),
-			       data->timestamp);
-
-	if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Y)
-		iio_push_event(indio_dev,
-			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
-						  0,
-						  IIO_MOD_Y,
-						  IIO_EV_TYPE_ROC,
-						  dir),
-			       data->timestamp);
-
-	if (ret & BMC150_ACCEL_ANY_MOTION_BIT_Z)
-		iio_push_event(indio_dev,
-			       IIO_MOD_EVENT_CODE(IIO_ACCEL,
-						  0,
-						  IIO_MOD_Z,
-						  IIO_EV_TYPE_ROC,
-						  dir),
-			       data->timestamp);
-
-	return ret;
-}
-
-static irqreturn_t bmc150_accel_irq_thread_handler(int irq, void *private)
-{
-	struct iio_dev *indio_dev = private;
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	bool ack = false;
-	int ret;
-
-	mutex_lock(&data->mutex);
-
-	if (data->fifo_mode) {
-		ret = __bmc150_accel_fifo_flush(indio_dev,
-						BMC150_ACCEL_FIFO_LENGTH, true);
-		if (ret > 0)
-			ack = true;
-	}
-
-	if (data->ev_enable_state) {
-		ret = bmc150_accel_handle_roc_event(indio_dev);
-		if (ret > 0)
-			ack = true;
-	}
-
-	if (ack) {
-		ret = i2c_smbus_write_byte_data(data->client,
-					BMC150_ACCEL_REG_INT_RST_LATCH,
-					BMC150_ACCEL_INT_MODE_LATCH_INT |
-					BMC150_ACCEL_INT_MODE_LATCH_RESET);
-		if (ret)
-			dev_err(&data->client->dev,
-				"Error writing reg_int_rst_latch\n");
-
-		ret = IRQ_HANDLED;
-	} else {
-		ret = IRQ_NONE;
-	}
-
-	mutex_unlock(&data->mutex);
-
-	return ret;
-}
-
-static irqreturn_t bmc150_accel_irq_handler(int irq, void *private)
-{
-	struct iio_dev *indio_dev = private;
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	bool ack = false;
-	int i;
-
-	data->old_timestamp = data->timestamp;
-	data->timestamp = iio_get_time_ns();
-
-	for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
-		if (data->triggers[i].enabled) {
-			iio_trigger_poll(data->triggers[i].indio_trig);
-			ack = true;
-			break;
-		}
-	}
-
-	if (data->ev_enable_state || data->fifo_mode)
-		return IRQ_WAKE_THREAD;
-
-	if (ack)
-		return IRQ_HANDLED;
-
-	return IRQ_NONE;
-}
-
-static int bmc150_accel_gpio_probe(struct i2c_client *client,
-				   struct bmc150_accel_data *data)
-{
-	struct device *dev;
-	struct gpio_desc *gpio;
-	int ret;
-
-	if (!client)
-		return -EINVAL;
-
-	dev = &client->dev;
-
-	/* data ready gpio interrupt pin */
-	gpio = devm_gpiod_get_index(dev, BMC150_ACCEL_GPIO_NAME, 0, GPIOD_IN);
-	if (IS_ERR(gpio)) {
-		dev_err(dev, "Failed: gpio get index\n");
-		return PTR_ERR(gpio);
-	}
-
-	ret = gpiod_to_irq(gpio);
-
-	dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
-
-	return ret;
-}
-
-static const struct {
-	int intr;
-	const char *name;
-	int (*setup)(struct bmc150_accel_trigger *t, bool state);
-} bmc150_accel_triggers[BMC150_ACCEL_TRIGGERS] = {
-	{
-		.intr = 0,
-		.name = "%s-dev%d",
-	},
-	{
-		.intr = 1,
-		.name = "%s-any-motion-dev%d",
-		.setup = bmc150_accel_any_motion_setup,
-	},
-};
-
-static void bmc150_accel_unregister_triggers(struct bmc150_accel_data *data,
-					     int from)
-{
-	int i;
-
-	for (i = from; i >= 0; i--) {
-		if (data->triggers[i].indio_trig) {
-			iio_trigger_unregister(data->triggers[i].indio_trig);
-			data->triggers[i].indio_trig = NULL;
-		}
-	}
-}
-
-static int bmc150_accel_triggers_setup(struct iio_dev *indio_dev,
-				       struct bmc150_accel_data *data)
-{
-	int i, ret;
-
-	for (i = 0; i < BMC150_ACCEL_TRIGGERS; i++) {
-		struct bmc150_accel_trigger *t = &data->triggers[i];
-
-		t->indio_trig = devm_iio_trigger_alloc(&data->client->dev,
-					       bmc150_accel_triggers[i].name,
-						       indio_dev->name,
-						       indio_dev->id);
-		if (!t->indio_trig) {
-			ret = -ENOMEM;
-			break;
-		}
-
-		t->indio_trig->dev.parent = &data->client->dev;
-		t->indio_trig->ops = &bmc150_accel_trigger_ops;
-		t->intr = bmc150_accel_triggers[i].intr;
-		t->data = data;
-		t->setup = bmc150_accel_triggers[i].setup;
-		iio_trigger_set_drvdata(t->indio_trig, t);
-
-		ret = iio_trigger_register(t->indio_trig);
-		if (ret)
-			break;
-	}
-
-	if (ret)
-		bmc150_accel_unregister_triggers(data, i - 1);
-
-	return ret;
-}
-
-#define BMC150_ACCEL_FIFO_MODE_STREAM          0x80
-#define BMC150_ACCEL_FIFO_MODE_FIFO            0x40
-#define BMC150_ACCEL_FIFO_MODE_BYPASS          0x00
-
-static int bmc150_accel_fifo_set_mode(struct bmc150_accel_data *data)
-{
-	u8 reg = BMC150_ACCEL_REG_FIFO_CONFIG1;
-	int ret;
-
-	ret = i2c_smbus_write_byte_data(data->client, reg, data->fifo_mode);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_fifo_config1\n");
-		return ret;
-	}
-
-	if (!data->fifo_mode)
-		return 0;
-
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMC150_ACCEL_REG_FIFO_CONFIG0,
-					data->watermark);
-	if (ret < 0)
-		dev_err(&data->client->dev, "Error writing reg_fifo_config0\n");
-
-	return ret;
-}
-
-static int bmc150_accel_buffer_preenable(struct iio_dev *indio_dev)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	return bmc150_accel_set_power_state(data, true);
-}
-
-static int bmc150_accel_buffer_postenable(struct iio_dev *indio_dev)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret = 0;
-
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_postenable(indio_dev);
-
-	mutex_lock(&data->mutex);
-
-	if (!data->watermark)
-		goto out;
-
-	ret = bmc150_accel_set_interrupt(data, BMC150_ACCEL_INT_WATERMARK,
-					 true);
-	if (ret)
-		goto out;
-
-	data->fifo_mode = BMC150_ACCEL_FIFO_MODE_FIFO;
-
-	ret = bmc150_accel_fifo_set_mode(data);
-	if (ret) {
-		data->fifo_mode = 0;
-		bmc150_accel_set_interrupt(data, BMC150_ACCEL_INT_WATERMARK,
-					   false);
-	}
-
-out:
-	mutex_unlock(&data->mutex);
-
-	return ret;
-}
-
-static int bmc150_accel_buffer_predisable(struct iio_dev *indio_dev)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	if (indio_dev->currentmode == INDIO_BUFFER_TRIGGERED)
-		return iio_triggered_buffer_predisable(indio_dev);
-
-	mutex_lock(&data->mutex);
-
-	if (!data->fifo_mode)
-		goto out;
-
-	bmc150_accel_set_interrupt(data, BMC150_ACCEL_INT_WATERMARK, false);
-	__bmc150_accel_fifo_flush(indio_dev, BMC150_ACCEL_FIFO_LENGTH, false);
-	data->fifo_mode = 0;
-	bmc150_accel_fifo_set_mode(data);
-
-out:
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-static int bmc150_accel_buffer_postdisable(struct iio_dev *indio_dev)
-{
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	return bmc150_accel_set_power_state(data, false);
-}
-
-static const struct iio_buffer_setup_ops bmc150_accel_buffer_ops = {
-	.preenable = bmc150_accel_buffer_preenable,
-	.postenable = bmc150_accel_buffer_postenable,
-	.predisable = bmc150_accel_buffer_predisable,
-	.postdisable = bmc150_accel_buffer_postdisable,
-};
-
-static int bmc150_accel_chip_init(struct bmc150_accel_data *data)
-{
-	int ret, i;
-
-	ret = i2c_smbus_read_byte_data(data->client, BMC150_ACCEL_REG_CHIP_ID);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error: Reading chip id\n");
-		return ret;
-	}
-
-	dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
-	for (i = 0; i < ARRAY_SIZE(bmc150_accel_chip_info_tbl); i++) {
-		if (bmc150_accel_chip_info_tbl[i].chip_id == ret) {
-			data->chip_info = &bmc150_accel_chip_info_tbl[i];
-			break;
-		}
-	}
-
-	if (!data->chip_info) {
-		dev_err(&data->client->dev, "Unsupported chip %x\n", ret);
-		return -ENODEV;
-	}
-
-	ret = bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_NORMAL, 0);
-	if (ret < 0)
-		return ret;
-
-	/* Set Bandwidth */
-	ret = bmc150_accel_set_bw(data, BMC150_ACCEL_DEF_BW, 0);
-	if (ret < 0)
-		return ret;
-
-	/* Set Default Range */
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMC150_ACCEL_REG_PMU_RANGE,
-					BMC150_ACCEL_DEF_RANGE_4G);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_pmu_range\n");
-		return ret;
-	}
-
-	data->range = BMC150_ACCEL_DEF_RANGE_4G;
-
-	/* Set default slope duration and thresholds */
-	data->slope_thres = BMC150_ACCEL_DEF_SLOPE_THRESHOLD;
-	data->slope_dur = BMC150_ACCEL_DEF_SLOPE_DURATION;
-	ret = bmc150_accel_update_slope(data);
-	if (ret < 0)
-		return ret;
-
-	/* Set default as latched interrupts */
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMC150_ACCEL_REG_INT_RST_LATCH,
-					BMC150_ACCEL_INT_MODE_LATCH_INT |
-					BMC150_ACCEL_INT_MODE_LATCH_RESET);
-	if (ret < 0) {
-		dev_err(&data->client->dev,
-			"Error writing reg_int_rst_latch\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmc150_accel_probe(struct i2c_client *client,
-			      const struct i2c_device_id *id)
-{
-	struct bmc150_accel_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;
-
-	ret = bmc150_accel_chip_init(data);
-	if (ret < 0)
-		return ret;
-
-	mutex_init(&data->mutex);
-
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->channels = data->chip_info->channels;
-	indio_dev->num_channels = data->chip_info->num_channels;
-	indio_dev->name = name ? name : data->chip_info->name;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->info = &bmc150_accel_info;
-
-	ret = iio_triggered_buffer_setup(indio_dev,
-					 &iio_pollfunc_store_time,
-					 bmc150_accel_trigger_handler,
-					 &bmc150_accel_buffer_ops);
-	if (ret < 0) {
-		dev_err(&client->dev, "Failed: iio triggered buffer setup\n");
-		return ret;
-	}
-
-	if (client->irq < 0)
-		client->irq = bmc150_accel_gpio_probe(client, data);
-
-	if (client->irq > 0) {
-		ret = devm_request_threaded_irq(
-						&client->dev, client->irq,
-						bmc150_accel_irq_handler,
-						bmc150_accel_irq_thread_handler,
-						IRQF_TRIGGER_RISING,
-						BMC150_ACCEL_IRQ_NAME,
-						indio_dev);
-		if (ret)
-			goto err_buffer_cleanup;
-
-		/*
-		 * Set latched mode interrupt. While certain interrupts are
-		 * non-latched regardless of this settings (e.g. new data) we
-		 * want to use latch mode when we can to prevent interrupt
-		 * flooding.
-		 */
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMC150_ACCEL_REG_INT_RST_LATCH,
-					     BMC150_ACCEL_INT_MODE_LATCH_RESET);
-		if (ret < 0) {
-			dev_err(&data->client->dev, "Error writing reg_int_rst_latch\n");
-			goto err_buffer_cleanup;
-		}
-
-		bmc150_accel_interrupts_setup(indio_dev, data);
-
-		ret = bmc150_accel_triggers_setup(indio_dev, data);
-		if (ret)
-			goto err_buffer_cleanup;
-
-		if (i2c_check_functionality(client->adapter, I2C_FUNC_I2C) ||
-		    i2c_check_functionality(client->adapter,
-					    I2C_FUNC_SMBUS_READ_I2C_BLOCK)) {
-			indio_dev->modes |= INDIO_BUFFER_SOFTWARE;
-			indio_dev->info = &bmc150_accel_info_fifo;
-			indio_dev->buffer->attrs = bmc150_accel_fifo_attributes;
-		}
-	}
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "Unable to register iio device\n");
-		goto err_trigger_unregister;
-	}
-
-	ret = pm_runtime_set_active(&client->dev);
-	if (ret)
-		goto err_iio_unregister;
-
-	pm_runtime_enable(&client->dev);
-	pm_runtime_set_autosuspend_delay(&client->dev,
-					 BMC150_AUTO_SUSPEND_DELAY_MS);
-	pm_runtime_use_autosuspend(&client->dev);
-
-	return 0;
-
-err_iio_unregister:
-	iio_device_unregister(indio_dev);
-err_trigger_unregister:
-	bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1);
-err_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	return ret;
-}
-
-static int bmc150_accel_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	pm_runtime_disable(&client->dev);
-	pm_runtime_set_suspended(&client->dev);
-	pm_runtime_put_noidle(&client->dev);
-
-	iio_device_unregister(indio_dev);
-
-	bmc150_accel_unregister_triggers(data, BMC150_ACCEL_TRIGGERS - 1);
-
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	mutex_lock(&data->mutex);
-	bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_DEEP_SUSPEND, 0);
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int bmc150_accel_suspend(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	mutex_lock(&data->mutex);
-	bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_SUSPEND, 0);
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-static int bmc150_accel_resume(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-
-	mutex_lock(&data->mutex);
-	if (atomic_read(&data->active_intr))
-		bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_NORMAL, 0);
-	bmc150_accel_fifo_set_mode(data);
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-#endif
-
-#ifdef CONFIG_PM
-static int bmc150_accel_runtime_suspend(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret;
-
-	dev_dbg(&data->client->dev,  __func__);
-	ret = bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_SUSPEND, 0);
-	if (ret < 0)
-		return -EAGAIN;
-
-	return 0;
-}
-
-static int bmc150_accel_runtime_resume(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmc150_accel_data *data = iio_priv(indio_dev);
-	int ret;
-	int sleep_val;
-
-	dev_dbg(&data->client->dev,  __func__);
-
-	ret = bmc150_accel_set_mode(data, BMC150_ACCEL_SLEEP_MODE_NORMAL, 0);
-	if (ret < 0)
-		return ret;
-	ret = bmc150_accel_fifo_set_mode(data);
-	if (ret < 0)
-		return ret;
-
-	sleep_val = bmc150_accel_get_startup_times(data);
-	if (sleep_val < 20)
-		usleep_range(sleep_val * 1000, 20000);
-	else
-		msleep_interruptible(sleep_val);
-
-	return 0;
-}
-#endif
-
-static const struct dev_pm_ops bmc150_accel_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(bmc150_accel_suspend, bmc150_accel_resume)
-	SET_RUNTIME_PM_OPS(bmc150_accel_runtime_suspend,
-			   bmc150_accel_runtime_resume, NULL)
-};
-
-static const struct acpi_device_id bmc150_accel_acpi_match[] = {
-	{"BSBA0150",	bmc150},
-	{"BMC150A",	bmc150},
-	{"BMI055A",	bmi055},
-	{"BMA0255",	bma255},
-	{"BMA250E",	bma250e},
-	{"BMA222E",	bma222e},
-	{"BMA0280",	bma280},
-	{ },
-};
-MODULE_DEVICE_TABLE(acpi, bmc150_accel_acpi_match);
-
-static const struct i2c_device_id bmc150_accel_id[] = {
-	{"bmc150_accel",	bmc150},
-	{"bmi055_accel",	bmi055},
-	{"bma255",		bma255},
-	{"bma250e",		bma250e},
-	{"bma222e",		bma222e},
-	{"bma280",		bma280},
-	{}
-};
-
-MODULE_DEVICE_TABLE(i2c, bmc150_accel_id);
-
-static struct i2c_driver bmc150_accel_driver = {
-	.driver = {
-		.name	= BMC150_ACCEL_DRV_NAME,
-		.acpi_match_table = ACPI_PTR(bmc150_accel_acpi_match),
-		.pm	= &bmc150_accel_pm_ops,
-	},
-	.probe		= bmc150_accel_probe,
-	.remove		= bmc150_accel_remove,
-	.id_table	= bmc150_accel_id,
-};
-module_i2c_driver(bmc150_accel_driver);
-
-MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("BMC150 accelerometer driver");