Linux-libre 4.4-gnupck-4.4-gnu

1 files changed, 0 insertions, 1274 deletions

diff --git a/drivers/iio/gyro/bmg160.c b/drivers/iio/gyro/bmg160.c
deleted file mode 100644
index 460bf715d..000000000
--- a/drivers/iio/gyro/bmg160.c
+++ /dev/null
@@ -1,1274 +0,0 @@
-/*
- * BMG160 Gyro Sensor driver
- * 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/trigger.h>
-#include <linux/iio/events.h>
-#include <linux/iio/trigger_consumer.h>
-#include <linux/iio/triggered_buffer.h>
-
-#define BMG160_DRV_NAME		"bmg160"
-#define BMG160_IRQ_NAME		"bmg160_event"
-#define BMG160_GPIO_NAME		"gpio_int"
-
-#define BMG160_REG_CHIP_ID		0x00
-#define BMG160_CHIP_ID_VAL		0x0F
-
-#define BMG160_REG_PMU_LPW		0x11
-#define BMG160_MODE_NORMAL		0x00
-#define BMG160_MODE_DEEP_SUSPEND	0x20
-#define BMG160_MODE_SUSPEND		0x80
-
-#define BMG160_REG_RANGE		0x0F
-
-#define BMG160_RANGE_2000DPS		0
-#define BMG160_RANGE_1000DPS		1
-#define BMG160_RANGE_500DPS		2
-#define BMG160_RANGE_250DPS		3
-#define BMG160_RANGE_125DPS		4
-
-#define BMG160_REG_PMU_BW		0x10
-#define BMG160_NO_FILTER		0
-#define BMG160_DEF_BW			100
-
-#define BMG160_REG_INT_MAP_0		0x17
-#define BMG160_INT_MAP_0_BIT_ANY	BIT(1)
-
-#define BMG160_REG_INT_MAP_1		0x18
-#define BMG160_INT_MAP_1_BIT_NEW_DATA	BIT(0)
-
-#define BMG160_REG_INT_RST_LATCH	0x21
-#define BMG160_INT_MODE_LATCH_RESET	0x80
-#define BMG160_INT_MODE_LATCH_INT	0x0F
-#define BMG160_INT_MODE_NON_LATCH_INT	0x00
-
-#define BMG160_REG_INT_EN_0		0x15
-#define BMG160_DATA_ENABLE_INT		BIT(7)
-
-#define BMG160_REG_INT_EN_1		0x16
-#define BMG160_INT1_BIT_OD		BIT(1)
-
-#define BMG160_REG_XOUT_L		0x02
-#define BMG160_AXIS_TO_REG(axis)	(BMG160_REG_XOUT_L + (axis * 2))
-
-#define BMG160_REG_SLOPE_THRES		0x1B
-#define BMG160_SLOPE_THRES_MASK	0x0F
-
-#define BMG160_REG_MOTION_INTR		0x1C
-#define BMG160_INT_MOTION_X		BIT(0)
-#define BMG160_INT_MOTION_Y		BIT(1)
-#define BMG160_INT_MOTION_Z		BIT(2)
-#define BMG160_ANY_DUR_MASK		0x30
-#define BMG160_ANY_DUR_SHIFT		4
-
-#define BMG160_REG_INT_STATUS_2	0x0B
-#define BMG160_ANY_MOTION_MASK		0x07
-#define BMG160_ANY_MOTION_BIT_X		BIT(0)
-#define BMG160_ANY_MOTION_BIT_Y		BIT(1)
-#define BMG160_ANY_MOTION_BIT_Z		BIT(2)
-
-#define BMG160_REG_TEMP		0x08
-#define BMG160_TEMP_CENTER_VAL		23
-
-#define BMG160_MAX_STARTUP_TIME_MS	80
-
-#define BMG160_AUTO_SUSPEND_DELAY_MS	2000
-
-struct bmg160_data {
-	struct i2c_client *client;
-	struct iio_trigger *dready_trig;
-	struct iio_trigger *motion_trig;
-	struct mutex mutex;
-	s16 buffer[8];
-	u8 bw_bits;
-	u32 dps_range;
-	int ev_enable_state;
-	int slope_thres;
-	bool dready_trigger_on;
-	bool motion_trigger_on;
-};
-
-enum bmg160_axis {
-	AXIS_X,
-	AXIS_Y,
-	AXIS_Z,
-};
-
-static const struct {
-	int val;
-	int bw_bits;
-} bmg160_samp_freq_table[] = { {100, 0x07},
-			       {200, 0x06},
-			       {400, 0x03},
-			       {1000, 0x02},
-			       {2000, 0x01} };
-
-static const struct {
-	int scale;
-	int dps_range;
-} bmg160_scale_table[] = { { 1065, BMG160_RANGE_2000DPS},
-			   { 532, BMG160_RANGE_1000DPS},
-			   { 266, BMG160_RANGE_500DPS},
-			   { 133, BMG160_RANGE_250DPS},
-			   { 66, BMG160_RANGE_125DPS} };
-
-static int bmg160_set_mode(struct bmg160_data *data, u8 mode)
-{
-	int ret;
-
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_PMU_LPW, mode);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmg160_convert_freq_to_bit(int val)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
-		if (bmg160_samp_freq_table[i].val == val)
-			return bmg160_samp_freq_table[i].bw_bits;
-	}
-
-	return -EINVAL;
-}
-
-static int bmg160_set_bw(struct bmg160_data *data, int val)
-{
-	int ret;
-	int bw_bits;
-
-	bw_bits = bmg160_convert_freq_to_bit(val);
-	if (bw_bits < 0)
-		return bw_bits;
-
-	ret = i2c_smbus_write_byte_data(data->client, BMG160_REG_PMU_BW,
-					bw_bits);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_pmu_bw\n");
-		return ret;
-	}
-
-	data->bw_bits = bw_bits;
-
-	return 0;
-}
-
-static int bmg160_chip_init(struct bmg160_data *data)
-{
-	int ret;
-
-	ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_CHIP_ID);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_chip_id\n");
-		return ret;
-	}
-
-	dev_dbg(&data->client->dev, "Chip Id %x\n", ret);
-	if (ret != BMG160_CHIP_ID_VAL) {
-		dev_err(&data->client->dev, "invalid chip %x\n", ret);
-		return -ENODEV;
-	}
-
-	ret = bmg160_set_mode(data, BMG160_MODE_NORMAL);
-	if (ret < 0)
-		return ret;
-
-	/* Wait upto 500 ms to be ready after changing mode */
-	usleep_range(500, 1000);
-
-	/* Set Bandwidth */
-	ret = bmg160_set_bw(data, BMG160_DEF_BW);
-	if (ret < 0)
-		return ret;
-
-	/* Set Default Range */
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_RANGE,
-					BMG160_RANGE_500DPS);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_range\n");
-		return ret;
-	}
-	data->dps_range = BMG160_RANGE_500DPS;
-
-	ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_SLOPE_THRES);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_slope_thres\n");
-		return ret;
-	}
-	data->slope_thres = ret;
-
-	/* Set default interrupt mode */
-	ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_EN_1);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_en_1\n");
-		return ret;
-	}
-	ret &= ~BMG160_INT1_BIT_OD;
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_INT_EN_1, ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_en_1\n");
-		return ret;
-	}
-
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_INT_RST_LATCH,
-					BMG160_INT_MODE_LATCH_INT |
-					BMG160_INT_MODE_LATCH_RESET);
-	if (ret < 0) {
-		dev_err(&data->client->dev,
-			"Error writing reg_motion_intr\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmg160_set_power_state(struct bmg160_data *data, bool on)
-{
-#ifdef CONFIG_PM
-	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: bmg160_set_power_state for %d\n", on);
-		if (on)
-			pm_runtime_put_noidle(&data->client->dev);
-
-		return ret;
-	}
-#endif
-
-	return 0;
-}
-
-static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data,
-					     bool status)
-{
-	int ret;
-
-	/* Enable/Disable INT_MAP0 mapping */
-	ret = i2c_smbus_read_byte_data(data->client,  BMG160_REG_INT_MAP_0);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_map0\n");
-		return ret;
-	}
-	if (status)
-		ret |= BMG160_INT_MAP_0_BIT_ANY;
-	else
-		ret &= ~BMG160_INT_MAP_0_BIT_ANY;
-
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_INT_MAP_0,
-					ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_map0\n");
-		return ret;
-	}
-
-	/* Enable/Disable slope interrupts */
-	if (status) {
-		/* Update slope thres */
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_SLOPE_THRES,
-						data->slope_thres);
-		if (ret < 0) {
-			dev_err(&data->client->dev,
-				"Error writing reg_slope_thres\n");
-			return ret;
-		}
-
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_MOTION_INTR,
-						BMG160_INT_MOTION_X |
-						BMG160_INT_MOTION_Y |
-						BMG160_INT_MOTION_Z);
-		if (ret < 0) {
-			dev_err(&data->client->dev,
-				"Error writing reg_motion_intr\n");
-			return ret;
-		}
-
-		/*
-		 * New data interrupt is always non-latched,
-		 * which will have higher priority, so no need
-		 * to set latched mode, we will be flooded anyway with INTR
-		 */
-		if (!data->dready_trigger_on) {
-			ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_RST_LATCH,
-						BMG160_INT_MODE_LATCH_INT |
-						BMG160_INT_MODE_LATCH_RESET);
-			if (ret < 0) {
-				dev_err(&data->client->dev,
-					"Error writing reg_rst_latch\n");
-				return ret;
-			}
-		}
-
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_EN_0,
-						BMG160_DATA_ENABLE_INT);
-
-	} else
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_EN_0,
-						0);
-
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_en0\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmg160_setup_new_data_interrupt(struct bmg160_data *data,
-					   bool status)
-{
-	int ret;
-
-	/* Enable/Disable INT_MAP1 mapping */
-	ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_1);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_map1\n");
-		return ret;
-	}
-
-	if (status)
-		ret |= BMG160_INT_MAP_1_BIT_NEW_DATA;
-	else
-		ret &= ~BMG160_INT_MAP_1_BIT_NEW_DATA;
-
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_INT_MAP_1,
-					ret);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_map1\n");
-		return ret;
-	}
-
-	if (status) {
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_RST_LATCH,
-						BMG160_INT_MODE_NON_LATCH_INT |
-						BMG160_INT_MODE_LATCH_RESET);
-		if (ret < 0) {
-			dev_err(&data->client->dev,
-				"Error writing reg_rst_latch\n");
-				return ret;
-		}
-
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_EN_0,
-						BMG160_DATA_ENABLE_INT);
-
-	} else {
-		/* Restore interrupt mode */
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_RST_LATCH,
-						BMG160_INT_MODE_LATCH_INT |
-						BMG160_INT_MODE_LATCH_RESET);
-		if (ret < 0) {
-			dev_err(&data->client->dev,
-				"Error writing reg_rst_latch\n");
-				return ret;
-		}
-
-		ret = i2c_smbus_write_byte_data(data->client,
-						BMG160_REG_INT_EN_0,
-						0);
-	}
-
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_int_en0\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmg160_get_bw(struct bmg160_data *data, int *val)
-{
-	int i;
-
-	for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) {
-		if (bmg160_samp_freq_table[i].bw_bits == data->bw_bits) {
-			*val = bmg160_samp_freq_table[i].val;
-			return IIO_VAL_INT;
-		}
-	}
-
-	return -EINVAL;
-}
-
-static int bmg160_set_scale(struct bmg160_data *data, int val)
-{
-	int ret, i;
-
-	for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) {
-		if (bmg160_scale_table[i].scale == val) {
-			ret = i2c_smbus_write_byte_data(
-					data->client,
-					BMG160_REG_RANGE,
-					bmg160_scale_table[i].dps_range);
-			if (ret < 0) {
-				dev_err(&data->client->dev,
-					"Error writing reg_range\n");
-				return ret;
-			}
-			data->dps_range = bmg160_scale_table[i].dps_range;
-			return 0;
-		}
-	}
-
-	return -EINVAL;
-}
-
-static int bmg160_get_temp(struct bmg160_data *data, int *val)
-{
-	int ret;
-
-	mutex_lock(&data->mutex);
-	ret = bmg160_set_power_state(data, true);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_TEMP);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_temp\n");
-		bmg160_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	*val = sign_extend32(ret, 7);
-	ret = bmg160_set_power_state(data, false);
-	mutex_unlock(&data->mutex);
-	if (ret < 0)
-		return ret;
-
-	return IIO_VAL_INT;
-}
-
-static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val)
-{
-	int ret;
-
-	mutex_lock(&data->mutex);
-	ret = bmg160_set_power_state(data, true);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	ret = i2c_smbus_read_word_data(data->client, BMG160_AXIS_TO_REG(axis));
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading axis %d\n", axis);
-		bmg160_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	*val = sign_extend32(ret, 15);
-	ret = bmg160_set_power_state(data, false);
-	mutex_unlock(&data->mutex);
-	if (ret < 0)
-		return ret;
-
-	return IIO_VAL_INT;
-}
-
-static int bmg160_read_raw(struct iio_dev *indio_dev,
-			   struct iio_chan_spec const *chan,
-			   int *val, int *val2, long mask)
-{
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		switch (chan->type) {
-		case IIO_TEMP:
-			return bmg160_get_temp(data, val);
-		case IIO_ANGL_VEL:
-			if (iio_buffer_enabled(indio_dev))
-				return -EBUSY;
-			else
-				return bmg160_get_axis(data, chan->scan_index,
-						       val);
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_OFFSET:
-		if (chan->type == IIO_TEMP) {
-			*val = BMG160_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_ANGL_VEL:
-		{
-			int i;
-
-			for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) {
-				if (bmg160_scale_table[i].dps_range ==
-							data->dps_range) {
-					*val2 = bmg160_scale_table[i].scale;
-					return IIO_VAL_INT_PLUS_MICRO;
-				}
-			}
-			return -EINVAL;
-		}
-		default:
-			return -EINVAL;
-		}
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		*val2 = 0;
-		mutex_lock(&data->mutex);
-		ret = bmg160_get_bw(data, val);
-		mutex_unlock(&data->mutex);
-		return ret;
-	default:
-		return -EINVAL;
-	}
-}
-
-static int bmg160_write_raw(struct iio_dev *indio_dev,
-			    struct iio_chan_spec const *chan,
-			    int val, int val2, long mask)
-{
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		mutex_lock(&data->mutex);
-		/*
-		 * Section 4.2 of spec
-		 * In suspend mode, the only supported operations are reading
-		 * registers as well as writing to the (0x14) softreset
-		 * register. Since we will be in suspend mode by default, change
-		 * mode to power on for other writes.
-		 */
-		ret = bmg160_set_power_state(data, true);
-		if (ret < 0) {
-			mutex_unlock(&data->mutex);
-			return ret;
-		}
-		ret = bmg160_set_bw(data, val);
-		if (ret < 0) {
-			bmg160_set_power_state(data, false);
-			mutex_unlock(&data->mutex);
-			return ret;
-		}
-		ret = bmg160_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	case IIO_CHAN_INFO_SCALE:
-		if (val)
-			return -EINVAL;
-
-		mutex_lock(&data->mutex);
-		/* Refer to comments above for the suspend mode ops */
-		ret = bmg160_set_power_state(data, true);
-		if (ret < 0) {
-			mutex_unlock(&data->mutex);
-			return ret;
-		}
-		ret = bmg160_set_scale(data, val2);
-		if (ret < 0) {
-			bmg160_set_power_state(data, false);
-			mutex_unlock(&data->mutex);
-			return ret;
-		}
-		ret = bmg160_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	default:
-		return -EINVAL;
-	}
-
-	return -EINVAL;
-}
-
-static int bmg160_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 bmg160_data *data = iio_priv(indio_dev);
-
-	*val2 = 0;
-	switch (info) {
-	case IIO_EV_INFO_VALUE:
-		*val = data->slope_thres & BMG160_SLOPE_THRES_MASK;
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return IIO_VAL_INT;
-}
-
-static int bmg160_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 bmg160_data *data = iio_priv(indio_dev);
-
-	switch (info) {
-	case IIO_EV_INFO_VALUE:
-		if (data->ev_enable_state)
-			return -EBUSY;
-		data->slope_thres &= ~BMG160_SLOPE_THRES_MASK;
-		data->slope_thres |= (val & BMG160_SLOPE_THRES_MASK);
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
-}
-
-static int bmg160_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 bmg160_data *data = iio_priv(indio_dev);
-
-	return data->ev_enable_state;
-}
-
-static int bmg160_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 bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	if (state && data->ev_enable_state)
-		return 0;
-
-	mutex_lock(&data->mutex);
-
-	if (!state && data->motion_trigger_on) {
-		data->ev_enable_state = 0;
-		mutex_unlock(&data->mutex);
-		return 0;
-	}
-	/*
-	 * We will expect the enable and disable to do operation in
-	 * 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 of
-	 * enable operation. When runtime pm is disabled the mode
-	 * is always on so sequence doesn't matter
-	 */
-	ret = bmg160_set_power_state(data, state);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	ret =  bmg160_setup_any_motion_interrupt(data, state);
-	if (ret < 0) {
-		bmg160_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-
-	data->ev_enable_state = state;
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 400 1000 2000");
-
-static IIO_CONST_ATTR(in_anglvel_scale_available,
-		      "0.001065 0.000532 0.000266 0.000133 0.000066");
-
-static struct attribute *bmg160_attributes[] = {
-	&iio_const_attr_sampling_frequency_available.dev_attr.attr,
-	&iio_const_attr_in_anglvel_scale_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group bmg160_attrs_group = {
-	.attrs = bmg160_attributes,
-};
-
-static const struct iio_event_spec bmg160_event = {
-		.type = IIO_EV_TYPE_ROC,
-		.dir = IIO_EV_DIR_EITHER,
-		.mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) |
-				       BIT(IIO_EV_INFO_ENABLE)
-};
-
-#define BMG160_CHANNEL(_axis) {					\
-	.type = IIO_ANGL_VEL,						\
-	.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 = 16,					\
-		.storagebits = 16,					\
-	},								\
-	.event_spec = &bmg160_event,					\
-	.num_event_specs = 1						\
-}
-
-static const struct iio_chan_spec bmg160_channels[] = {
-	{
-		.type = IIO_TEMP,
-		.info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
-				      BIT(IIO_CHAN_INFO_SCALE) |
-				      BIT(IIO_CHAN_INFO_OFFSET),
-		.scan_index = -1,
-	},
-	BMG160_CHANNEL(X),
-	BMG160_CHANNEL(Y),
-	BMG160_CHANNEL(Z),
-	IIO_CHAN_SOFT_TIMESTAMP(3),
-};
-
-static const struct iio_info bmg160_info = {
-	.attrs			= &bmg160_attrs_group,
-	.read_raw		= bmg160_read_raw,
-	.write_raw		= bmg160_write_raw,
-	.read_event_value	= bmg160_read_event,
-	.write_event_value	= bmg160_write_event,
-	.write_event_config	= bmg160_write_event_config,
-	.read_event_config	= bmg160_read_event_config,
-	.driver_module		= THIS_MODULE,
-};
-
-static irqreturn_t bmg160_trigger_handler(int irq, void *p)
-{
-	struct iio_poll_func *pf = p;
-	struct iio_dev *indio_dev = pf->indio_dev;
-	struct bmg160_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,
-					       BMG160_AXIS_TO_REG(bit));
-		if (ret < 0) {
-			mutex_unlock(&data->mutex);
-			goto err;
-		}
-		data->buffer[i++] = ret;
-	}
-	mutex_unlock(&data->mutex);
-
-	iio_push_to_buffers_with_timestamp(indio_dev, data->buffer,
-					   pf->timestamp);
-err:
-	iio_trigger_notify_done(indio_dev->trig);
-
-	return IRQ_HANDLED;
-}
-
-static int bmg160_trig_try_reen(struct iio_trigger *trig)
-{
-	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	/* new data interrupts don't need ack */
-	if (data->dready_trigger_on)
-		return 0;
-
-	/* Set latched mode interrupt and clear any latched interrupt */
-	ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_INT_RST_LATCH,
-					BMG160_INT_MODE_LATCH_INT |
-					BMG160_INT_MODE_LATCH_RESET);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error writing reg_rst_latch\n");
-		return ret;
-	}
-
-	return 0;
-}
-
-static int bmg160_data_rdy_trigger_set_state(struct iio_trigger *trig,
-					     bool state)
-{
-	struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig);
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	mutex_lock(&data->mutex);
-
-	if (!state && data->ev_enable_state && data->motion_trigger_on) {
-		data->motion_trigger_on = false;
-		mutex_unlock(&data->mutex);
-		return 0;
-	}
-
-	/*
-	 * Refer to comment in bmg160_write_event_config for
-	 * enable/disable operation order
-	 */
-	ret = bmg160_set_power_state(data, state);
-	if (ret < 0) {
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-	if (data->motion_trig == trig)
-		ret =  bmg160_setup_any_motion_interrupt(data, state);
-	else
-		ret = bmg160_setup_new_data_interrupt(data, state);
-	if (ret < 0) {
-		bmg160_set_power_state(data, false);
-		mutex_unlock(&data->mutex);
-		return ret;
-	}
-	if (data->motion_trig == trig)
-		data->motion_trigger_on = state;
-	else
-		data->dready_trigger_on = state;
-
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-static const struct iio_trigger_ops bmg160_trigger_ops = {
-	.set_trigger_state = bmg160_data_rdy_trigger_set_state,
-	.try_reenable = bmg160_trig_try_reen,
-	.owner = THIS_MODULE,
-};
-
-static irqreturn_t bmg160_event_handler(int irq, void *private)
-{
-	struct iio_dev *indio_dev = private;
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-	int dir;
-
-	ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_STATUS_2);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "Error reading reg_int_status2\n");
-		goto ack_intr_status;
-	}
-
-	if (ret & 0x08)
-		dir = IIO_EV_DIR_RISING;
-	else
-		dir = IIO_EV_DIR_FALLING;
-
-	if (ret & BMG160_ANY_MOTION_BIT_X)
-		iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
-							0,
-							IIO_MOD_X,
-							IIO_EV_TYPE_ROC,
-							dir),
-							iio_get_time_ns());
-	if (ret & BMG160_ANY_MOTION_BIT_Y)
-		iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
-							0,
-							IIO_MOD_Y,
-							IIO_EV_TYPE_ROC,
-							dir),
-							iio_get_time_ns());
-	if (ret & BMG160_ANY_MOTION_BIT_Z)
-		iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL,
-							0,
-							IIO_MOD_Z,
-							IIO_EV_TYPE_ROC,
-							dir),
-							iio_get_time_ns());
-
-ack_intr_status:
-	if (!data->dready_trigger_on) {
-		ret = i2c_smbus_write_byte_data(data->client,
-					BMG160_REG_INT_RST_LATCH,
-					BMG160_INT_MODE_LATCH_INT |
-					BMG160_INT_MODE_LATCH_RESET);
-		if (ret < 0)
-			dev_err(&data->client->dev,
-				"Error writing reg_rst_latch\n");
-	}
-
-	return IRQ_HANDLED;
-}
-
-static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private)
-{
-	struct iio_dev *indio_dev = private;
-	struct bmg160_data *data = iio_priv(indio_dev);
-
-	if (data->dready_trigger_on)
-		iio_trigger_poll(data->dready_trig);
-	else if (data->motion_trigger_on)
-		iio_trigger_poll(data->motion_trig);
-
-	if (data->ev_enable_state)
-		return IRQ_WAKE_THREAD;
-	else
-		return IRQ_HANDLED;
-
-}
-
-static int bmg160_buffer_preenable(struct iio_dev *indio_dev)
-{
-	struct bmg160_data *data = iio_priv(indio_dev);
-
-	return bmg160_set_power_state(data, true);
-}
-
-static int bmg160_buffer_postdisable(struct iio_dev *indio_dev)
-{
-	struct bmg160_data *data = iio_priv(indio_dev);
-
-	return bmg160_set_power_state(data, false);
-}
-
-static const struct iio_buffer_setup_ops bmg160_buffer_setup_ops = {
-	.preenable = bmg160_buffer_preenable,
-	.postenable = iio_triggered_buffer_postenable,
-	.predisable = iio_triggered_buffer_predisable,
-	.postdisable = bmg160_buffer_postdisable,
-};
-
-static int bmg160_gpio_probe(struct i2c_client *client,
-			     struct bmg160_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, BMG160_GPIO_NAME, 0, GPIOD_IN);
-	if (IS_ERR(gpio)) {
-		dev_err(dev, "acpi gpio get index failed\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 char *bmg160_match_acpi_device(struct device *dev)
-{
-	const struct acpi_device_id *id;
-
-	id = acpi_match_device(dev->driver->acpi_match_table, dev);
-	if (!id)
-		return NULL;
-
-	return dev_name(dev);
-}
-
-static int bmg160_probe(struct i2c_client *client,
-			const struct i2c_device_id *id)
-{
-	struct bmg160_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;
-
-	ret = bmg160_chip_init(data);
-	if (ret < 0)
-		return ret;
-
-	mutex_init(&data->mutex);
-
-	if (id)
-		name = id->name;
-
-	if (ACPI_HANDLE(&client->dev))
-		name = bmg160_match_acpi_device(&client->dev);
-
-	indio_dev->dev.parent = &client->dev;
-	indio_dev->channels = bmg160_channels;
-	indio_dev->num_channels = ARRAY_SIZE(bmg160_channels);
-	indio_dev->name = name;
-	indio_dev->modes = INDIO_DIRECT_MODE;
-	indio_dev->info = &bmg160_info;
-
-	if (client->irq <= 0)
-		client->irq = bmg160_gpio_probe(client, data);
-
-	if (client->irq > 0) {
-		ret = devm_request_threaded_irq(&client->dev,
-						client->irq,
-						bmg160_data_rdy_trig_poll,
-						bmg160_event_handler,
-						IRQF_TRIGGER_RISING,
-						BMG160_IRQ_NAME,
-						indio_dev);
-		if (ret)
-			return ret;
-
-		data->dready_trig = devm_iio_trigger_alloc(&client->dev,
-							   "%s-dev%d",
-							   indio_dev->name,
-							   indio_dev->id);
-		if (!data->dready_trig)
-			return -ENOMEM;
-
-		data->motion_trig = devm_iio_trigger_alloc(&client->dev,
-							  "%s-any-motion-dev%d",
-							  indio_dev->name,
-							  indio_dev->id);
-		if (!data->motion_trig)
-			return -ENOMEM;
-
-		data->dready_trig->dev.parent = &client->dev;
-		data->dready_trig->ops = &bmg160_trigger_ops;
-		iio_trigger_set_drvdata(data->dready_trig, indio_dev);
-		ret = iio_trigger_register(data->dready_trig);
-		if (ret)
-			return ret;
-
-		data->motion_trig->dev.parent = &client->dev;
-		data->motion_trig->ops = &bmg160_trigger_ops;
-		iio_trigger_set_drvdata(data->motion_trig, indio_dev);
-		ret = iio_trigger_register(data->motion_trig);
-		if (ret) {
-			data->motion_trig = NULL;
-			goto err_trigger_unregister;
-		}
-	}
-
-	ret = iio_triggered_buffer_setup(indio_dev,
-					 iio_pollfunc_store_time,
-					 bmg160_trigger_handler,
-					 &bmg160_buffer_setup_ops);
-	if (ret < 0) {
-		dev_err(&client->dev,
-			"iio triggered buffer setup failed\n");
-		goto err_trigger_unregister;
-	}
-
-	ret = iio_device_register(indio_dev);
-	if (ret < 0) {
-		dev_err(&client->dev, "unable to register iio device\n");
-		goto err_buffer_cleanup;
-	}
-
-	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,
-					 BMG160_AUTO_SUSPEND_DELAY_MS);
-	pm_runtime_use_autosuspend(&client->dev);
-
-	return 0;
-
-err_iio_unregister:
-	iio_device_unregister(indio_dev);
-err_buffer_cleanup:
-	iio_triggered_buffer_cleanup(indio_dev);
-err_trigger_unregister:
-	if (data->dready_trig)
-		iio_trigger_unregister(data->dready_trig);
-	if (data->motion_trig)
-		iio_trigger_unregister(data->motion_trig);
-
-	return ret;
-}
-
-static int bmg160_remove(struct i2c_client *client)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(client);
-	struct bmg160_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);
-	iio_triggered_buffer_cleanup(indio_dev);
-
-	if (data->dready_trig) {
-		iio_trigger_unregister(data->dready_trig);
-		iio_trigger_unregister(data->motion_trig);
-	}
-
-	mutex_lock(&data->mutex);
-	bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND);
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-#ifdef CONFIG_PM_SLEEP
-static int bmg160_suspend(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmg160_data *data = iio_priv(indio_dev);
-
-	mutex_lock(&data->mutex);
-	bmg160_set_mode(data, BMG160_MODE_SUSPEND);
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-
-static int bmg160_resume(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmg160_data *data = iio_priv(indio_dev);
-
-	mutex_lock(&data->mutex);
-	if (data->dready_trigger_on || data->motion_trigger_on ||
-							data->ev_enable_state)
-		bmg160_set_mode(data, BMG160_MODE_NORMAL);
-	mutex_unlock(&data->mutex);
-
-	return 0;
-}
-#endif
-
-#ifdef CONFIG_PM
-static int bmg160_runtime_suspend(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	ret = bmg160_set_mode(data, BMG160_MODE_SUSPEND);
-	if (ret < 0) {
-		dev_err(&data->client->dev, "set mode failed\n");
-		return -EAGAIN;
-	}
-
-	return 0;
-}
-
-static int bmg160_runtime_resume(struct device *dev)
-{
-	struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
-	struct bmg160_data *data = iio_priv(indio_dev);
-	int ret;
-
-	ret = bmg160_set_mode(data, BMG160_MODE_NORMAL);
-	if (ret < 0)
-		return ret;
-
-	msleep_interruptible(BMG160_MAX_STARTUP_TIME_MS);
-
-	return 0;
-}
-#endif
-
-static const struct dev_pm_ops bmg160_pm_ops = {
-	SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume)
-	SET_RUNTIME_PM_OPS(bmg160_runtime_suspend,
-			   bmg160_runtime_resume, NULL)
-};
-
-static const struct acpi_device_id bmg160_acpi_match[] = {
-	{"BMG0160", 0},
-	{"BMI055B", 0},
-	{},
-};
-
-MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match);
-
-static const struct i2c_device_id bmg160_id[] = {
-	{"bmg160", 0},
-	{"bmi055_gyro", 0},
-	{}
-};
-
-MODULE_DEVICE_TABLE(i2c, bmg160_id);
-
-static struct i2c_driver bmg160_driver = {
-	.driver = {
-		.name	= BMG160_DRV_NAME,
-		.acpi_match_table = ACPI_PTR(bmg160_acpi_match),
-		.pm	= &bmg160_pm_ops,
-	},
-	.probe		= bmg160_probe,
-	.remove		= bmg160_remove,
-	.id_table	= bmg160_id,
-};
-module_i2c_driver(bmg160_driver);
-
-MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>");
-MODULE_LICENSE("GPL v2");
-MODULE_DESCRIPTION("BMG160 Gyro driver");