Removed unnecessary files

1 files changed, 0 insertions, 922 deletions

diff --git a/st_lsm6dsx_shub.c b/st_lsm6dsx_shub.c
deleted file mode 100644
index d6a1eeb..0000000
--- a/st_lsm6dsx_shub.c
+++ /dev/null
@@ -1,922 +0,0 @@
-/*
- * STMicroelectronics st_lsm6dsx i2c controller driver
- *
- * i2c controller embedded in lsm6dx series can connect up to four
- * slave devices using accelerometer sensor as trigger for i2c
- * read/write operations. Current implementation relies on SLV0 channel
- * for slave configuration and SLV{1,2,3} to read data and push them into
- * the hw FIFO
- *
- * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
- *
- * Permission to use, copy, modify, and/or distribute this software for any
- * purpose with or without fee is hereby granted, provided that the above
- * copyright notice and this permission notice appear in all copies.
- *
- * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
- * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
- * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
- * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
- * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
- * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- */
-#include <linux/module.h>
-#include <linux/regmap.h>
-#include <linux/iio/iio.h>
-#include <linux/iio/sysfs.h>
-#include <linux/bitfield.h>
-
-#include "st_lsm6dsx.h"
-
-#define ST_LSM6DSX_SLV_ADDR(n, base)		((base) + (n) * 3)
-#define ST_LSM6DSX_SLV_SUB_ADDR(n, base)	((base) + 1 + (n) * 3)
-#define ST_LSM6DSX_SLV_CONFIG(n, base)		((base) + 2 + (n) * 3)
-
-#define ST_LS6DSX_READ_OP_MASK			GENMASK(2, 0)
-
-static const struct st_lsm6dsx_ext_dev_settings st_lsm6dsx_ext_dev_table[] = {
-	/* LIS2MDL */
-	{
-		.i2c_addr = { 0x1e },
-		.wai = {
-			.addr = 0x4f,
-			.val = 0x40,
-		},
-		.id = ST_LSM6DSX_ID_MAGN,
-		.odr_table = {
-			.reg = {
-				.addr = 0x60,
-				.mask = GENMASK(3, 2),
-			},
-			.odr_avl[0] = {  10000, 0x0 },
-			.odr_avl[1] = {  20000, 0x1 },
-			.odr_avl[2] = {  50000, 0x2 },
-			.odr_avl[3] = { 100000, 0x3 },
-			.odr_len = 4,
-		},
-		.fs_table = {
-			.fs_avl[0] = {
-				.gain = 1500,
-				.val = 0x0,
-			}, /* 1500 uG/LSB */
-			.fs_len = 1,
-		},
-		.temp_comp = {
-			.addr = 0x60,
-			.mask = BIT(7),
-		},
-		.pwr_table = {
-			.reg = {
-				.addr = 0x60,
-				.mask = GENMASK(1, 0),
-			},
-			.off_val = 0x2,
-			.on_val = 0x0,
-		},
-		.off_canc = {
-			.addr = 0x61,
-			.mask = BIT(1),
-		},
-		.bdu = {
-			.addr = 0x62,
-			.mask = BIT(4),
-		},
-		.out = {
-			.addr = 0x68,
-			.len = 6,
-		},
-	},
-	/* LIS3MDL */
-	{
-		.i2c_addr = { 0x1e },
-		.wai = {
-			.addr = 0x0f,
-			.val = 0x3d,
-		},
-		.id = ST_LSM6DSX_ID_MAGN,
-		.odr_table = {
-			.reg = {
-				.addr = 0x20,
-				.mask = GENMASK(4, 2),
-			},
-			.odr_avl[0] = {  1000, 0x0 },
-			.odr_avl[1] = {  2000, 0x1 },
-			.odr_avl[2] = {  3000, 0x2 },
-			.odr_avl[3] = {  5000, 0x3 },
-			.odr_avl[4] = { 10000, 0x4 },
-			.odr_avl[5] = { 20000, 0x5 },
-			.odr_avl[6] = { 40000, 0x6 },
-			.odr_avl[7] = { 80000, 0x7 },
-			.odr_len = 8,
-		},
-		.fs_table = {
-			.reg = {
-				.addr = 0x21,
-				.mask = GENMASK(6, 5),
-			},
-			.fs_avl[0] = {
-				.gain = 146,
-				.val = 0x00,
-			}, /* 4000 uG/LSB */
-			.fs_avl[1] = {
-				.gain = 292,
-				.val = 0x01,
-			}, /* 8000 uG/LSB */
-			.fs_avl[2] = {
-				.gain = 438,
-				.val = 0x02,
-			}, /* 12000 uG/LSB */
-			.fs_avl[3] = {
-				.gain = 584,
-				.val = 0x03,
-			}, /* 16000 uG/LSB */
-			.fs_len = 4,
-		},
-		.pwr_table = {
-			.reg = {
-				.addr = 0x22,
-				.mask = GENMASK(1, 0),
-			},
-			.off_val = 0x2,
-			.on_val = 0x0,
-		},
-		.bdu = {
-			.addr = 0x24,
-			.mask = BIT(6),
-		},
-		.out = {
-			.addr = 0x28,
-			.len = 6,
-		},
-	},
-};
-
-static void st_lsm6dsx_shub_wait_complete(struct st_lsm6dsx_hw *hw)
-{
-	struct st_lsm6dsx_sensor *sensor;
-	u32 odr, timeout;
-
-	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
-	odr = (hw->enable_mask & BIT(ST_LSM6DSX_ID_ACC)) ? sensor->odr : 12500;
-	/* set 10ms as minimum timeout for i2c slave configuration */
-	timeout = max_t(u32, 2000000U / odr + 1, 10);
-	msleep(timeout);
-}
-
-/*
- * st_lsm6dsx_shub_read_output - read i2c controller register
- *
- * Read st_lsm6dsx i2c controller register
- */
-int st_lsm6dsx_shub_read_output(struct st_lsm6dsx_hw *hw, u8 *data, int len)
-{
-	const struct st_lsm6dsx_shub_settings *hub_settings;
-	int err;
-
-	mutex_lock(&hw->page_lock);
-
-	hub_settings = &hw->settings->shub_settings;
-	if (hub_settings->shub_out.sec_page) {
-		err = st_lsm6dsx_set_page(hw, true);
-		if (err < 0)
-			goto out;
-	}
-
-	err = regmap_bulk_read(hw->regmap, hub_settings->shub_out.addr,
-			       data, len);
-
-	if (hub_settings->shub_out.sec_page)
-		st_lsm6dsx_set_page(hw, false);
-out:
-	mutex_unlock(&hw->page_lock);
-
-	return err;
-}
-
-/*
- * st_lsm6dsx_shub_write_reg - write i2c controller register
- *
- * Write st_lsm6dsx i2c controller register
- */
-static int st_lsm6dsx_shub_write_reg(struct st_lsm6dsx_hw *hw, u8 addr,
-				     u8 *data, int len)
-{
-	int err;
-
-	mutex_lock(&hw->page_lock);
-	err = st_lsm6dsx_set_page(hw, true);
-	if (err < 0)
-		goto out;
-
-	err = regmap_bulk_write(hw->regmap, addr, data, len);
-
-	st_lsm6dsx_set_page(hw, false);
-out:
-	mutex_unlock(&hw->page_lock);
-
-	return err;
-}
-
-static int
-st_lsm6dsx_shub_write_reg_with_mask(struct st_lsm6dsx_hw *hw, u8 addr,
-				    u8 mask, u8 val)
-{
-	int err;
-
-	mutex_lock(&hw->page_lock);
-	err = st_lsm6dsx_set_page(hw, true);
-	if (err < 0)
-		goto out;
-
-	err = regmap_update_bits(hw->regmap, addr, mask, val);
-
-	st_lsm6dsx_set_page(hw, false);
-out:
-	mutex_unlock(&hw->page_lock);
-
-	return err;
-}
-
-static int st_lsm6dsx_shub_master_enable(struct st_lsm6dsx_sensor *sensor,
-					 bool enable)
-{
-	const struct st_lsm6dsx_shub_settings *hub_settings;
-	struct st_lsm6dsx_hw *hw = sensor->hw;
-	unsigned int data;
-	int err;
-
-	/* enable acc sensor as trigger */
-	err = st_lsm6dsx_sensor_set_enable(sensor, enable);
-	if (err < 0)
-		return err;
-
-	mutex_lock(&hw->page_lock);
-
-	hub_settings = &hw->settings->shub_settings;
-	if (hub_settings->master_en.sec_page) {
-		err = st_lsm6dsx_set_page(hw, true);
-		if (err < 0)
-			goto out;
-	}
-
-	data = ST_LSM6DSX_SHIFT_VAL(enable, hub_settings->master_en.mask);
-	err = regmap_update_bits(hw->regmap, hub_settings->master_en.addr,
-				 hub_settings->master_en.mask, data);
-
-	if (hub_settings->master_en.sec_page)
-		st_lsm6dsx_set_page(hw, false);
-out:
-	mutex_unlock(&hw->page_lock);
-
-	return err;
-}
-
-/*
- * st_lsm6dsx_shub_read - read data from slave device register
- *
- * Read data from slave device register. SLV0 is used for
- * one-shot read operation
- */
-static int
-st_lsm6dsx_shub_read(struct st_lsm6dsx_sensor *sensor, u8 addr,
-		     u8 *data, int len)
-{
-	const struct st_lsm6dsx_shub_settings *hub_settings;
-	u8 config[3], slv_addr, slv_config = 0;
-	struct st_lsm6dsx_hw *hw = sensor->hw;
-	const struct st_lsm6dsx_reg *aux_sens;
-	int err;
-
-	hub_settings = &hw->settings->shub_settings;
-	slv_addr = ST_LSM6DSX_SLV_ADDR(0, hub_settings->slv0_addr);
-	aux_sens = &hw->settings->shub_settings.aux_sens;
-	/* do not overwrite aux_sens */
-	if (slv_addr + 2 == aux_sens->addr)
-		slv_config = ST_LSM6DSX_SHIFT_VAL(3, aux_sens->mask);
-
-	config[0] = (sensor->ext_info.addr << 1) | 1;
-	config[1] = addr;
-	config[2] = (len & ST_LS6DSX_READ_OP_MASK) | slv_config;
-
-	err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config,
-					sizeof(config));
-	if (err < 0)
-		return err;
-
-	err = st_lsm6dsx_shub_master_enable(sensor, true);
-	if (err < 0)
-		return err;
-
-	st_lsm6dsx_shub_wait_complete(hw);
-
-	err = st_lsm6dsx_shub_read_output(hw, data,
-					  len & ST_LS6DSX_READ_OP_MASK);
-	if (err < 0)
-		return err;
-
-	st_lsm6dsx_shub_master_enable(sensor, false);
-
-	config[0] = hub_settings->pause;
-	config[1] = 0;
-	config[2] = slv_config;
-	return st_lsm6dsx_shub_write_reg(hw, slv_addr, config,
-					 sizeof(config));
-}
-
-/*
- * st_lsm6dsx_shub_write - write data to slave device register
- *
- * Write data from slave device register. SLV0 is used for
- * one-shot write operation
- */
-static int
-st_lsm6dsx_shub_write(struct st_lsm6dsx_sensor *sensor, u8 addr,
-		      u8 *data, int len)
-{
-	const struct st_lsm6dsx_shub_settings *hub_settings;
-	struct st_lsm6dsx_hw *hw = sensor->hw;
-	u8 config[2], slv_addr;
-	int err, i;
-
-	hub_settings = &hw->settings->shub_settings;
-	if (hub_settings->wr_once.addr) {
-		unsigned int data;
-
-		data = ST_LSM6DSX_SHIFT_VAL(1, hub_settings->wr_once.mask);
-		err = st_lsm6dsx_shub_write_reg_with_mask(hw,
-			hub_settings->wr_once.addr,
-			hub_settings->wr_once.mask,
-			data);
-		if (err < 0)
-			return err;
-	}
-
-	slv_addr = ST_LSM6DSX_SLV_ADDR(0, hub_settings->slv0_addr);
-	config[0] = sensor->ext_info.addr << 1;
-	for (i = 0 ; i < len; i++) {
-		config[1] = addr + i;
-
-		err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config,
-						sizeof(config));
-		if (err < 0)
-			return err;
-
-		err = st_lsm6dsx_shub_write_reg(hw, hub_settings->dw_slv0_addr,
-						&data[i], 1);
-		if (err < 0)
-			return err;
-
-		err = st_lsm6dsx_shub_master_enable(sensor, true);
-		if (err < 0)
-			return err;
-
-		st_lsm6dsx_shub_wait_complete(hw);
-
-		st_lsm6dsx_shub_master_enable(sensor, false);
-	}
-
-	config[0] = hub_settings->pause;
-	config[1] = 0;
-	return st_lsm6dsx_shub_write_reg(hw, slv_addr, config, sizeof(config));
-}
-
-static int
-st_lsm6dsx_shub_write_with_mask(struct st_lsm6dsx_sensor *sensor,
-				u8 addr, u8 mask, u8 val)
-{
-	int err;
-	u8 data;
-
-	err = st_lsm6dsx_shub_read(sensor, addr, &data, sizeof(data));
-	if (err < 0)
-		return err;
-
-	data = ((data & ~mask) | (val << __ffs(mask) & mask));
-
-	return st_lsm6dsx_shub_write(sensor, addr, &data, sizeof(data));
-}
-
-static int
-st_lsm6dsx_shub_get_odr_val(struct st_lsm6dsx_sensor *sensor,
-			    u32 odr, u16 *val)
-{
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	int i;
-
-	settings = sensor->ext_info.settings;
-	for (i = 0; i < settings->odr_table.odr_len; i++) {
-		if (settings->odr_table.odr_avl[i].milli_hz == odr)
-			break;
-	}
-
-	if (i == settings->odr_table.odr_len)
-		return -EINVAL;
-
-	*val = settings->odr_table.odr_avl[i].val;
-	return 0;
-}
-
-static int
-st_lsm6dsx_shub_set_odr(struct st_lsm6dsx_sensor *sensor, u32 odr)
-{
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	u16 val;
-	int err;
-
-	err = st_lsm6dsx_shub_get_odr_val(sensor, odr, &val);
-	if (err < 0)
-		return err;
-
-	settings = sensor->ext_info.settings;
-	return st_lsm6dsx_shub_write_with_mask(sensor,
-					       settings->odr_table.reg.addr,
-					       settings->odr_table.reg.mask,
-					       val);
-}
-
-/* use SLV{1,2,3} for FIFO read operations */
-static int
-st_lsm6dsx_shub_config_channels(struct st_lsm6dsx_sensor *sensor,
-				bool enable)
-{
-	const struct st_lsm6dsx_shub_settings *hub_settings;
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	u8 config[9] = {}, enable_mask, slv_addr;
-	struct st_lsm6dsx_hw *hw = sensor->hw;
-	struct st_lsm6dsx_sensor *cur_sensor;
-	int i, j = 0;
-
-	hub_settings = &hw->settings->shub_settings;
-	if (enable)
-		enable_mask = hw->enable_mask | BIT(sensor->id);
-	else
-		enable_mask = hw->enable_mask & ~BIT(sensor->id);
-
-	for (i = ST_LSM6DSX_ID_EXT0; i <= ST_LSM6DSX_ID_EXT2; i++) {
-		if (!hw->iio_devs[i])
-			continue;
-
-		cur_sensor = iio_priv(hw->iio_devs[i]);
-		if (!(enable_mask & BIT(cur_sensor->id)))
-			continue;
-
-		settings = cur_sensor->ext_info.settings;
-		config[j] = (sensor->ext_info.addr << 1) | 1;
-		config[j + 1] = settings->out.addr;
-		config[j + 2] = (settings->out.len & ST_LS6DSX_READ_OP_MASK) |
-				hub_settings->batch_en;
-		j += 3;
-	}
-
-	slv_addr = ST_LSM6DSX_SLV_ADDR(1, hub_settings->slv0_addr);
-	return st_lsm6dsx_shub_write_reg(hw, slv_addr, config,
-					 sizeof(config));
-}
-
-int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable)
-{
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	int err;
-
-	err = st_lsm6dsx_shub_config_channels(sensor, enable);
-	if (err < 0)
-		return err;
-
-	settings = sensor->ext_info.settings;
-	if (enable) {
-		err = st_lsm6dsx_shub_set_odr(sensor,
-					      sensor->ext_info.slv_odr);
-		if (err < 0)
-			return err;
-	} else {
-		err = st_lsm6dsx_shub_write_with_mask(sensor,
-					settings->odr_table.reg.addr,
-					settings->odr_table.reg.mask, 0);
-		if (err < 0)
-			return err;
-	}
-
-	if (settings->pwr_table.reg.addr) {
-		u8 val;
-
-		val = enable ? settings->pwr_table.on_val
-			     : settings->pwr_table.off_val;
-		err = st_lsm6dsx_shub_write_with_mask(sensor,
-					settings->pwr_table.reg.addr,
-					settings->pwr_table.reg.mask, val);
-		if (err < 0)
-			return err;
-	}
-
-	return st_lsm6dsx_shub_master_enable(sensor, enable);
-}
-
-static int
-st_lsm6dsx_shub_read_oneshot(struct st_lsm6dsx_sensor *sensor,
-			     struct iio_chan_spec const *ch,
-			     int *val)
-{
-	int err, delay, len;
-	u8 data[4];
-
-	err = st_lsm6dsx_shub_set_enable(sensor, true);
-	if (err < 0)
-		return err;
-
-	delay = 1000000000 / sensor->ext_info.slv_odr;
-	usleep_range(delay, 2 * delay);
-
-	len = min_t(int, sizeof(data), ch->scan_type.realbits >> 3);
-	err = st_lsm6dsx_shub_read(sensor, ch->address, data, len);
-	if (err < 0)
-		return err;
-
-	err = st_lsm6dsx_shub_set_enable(sensor, false);
-	if (err < 0)
-		return err;
-
-	switch (len) {
-	case 2:
-		*val = (s16)le16_to_cpu(*((__le16 *)data));
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return IIO_VAL_INT;
-}
-
-static int
-st_lsm6dsx_shub_read_raw(struct iio_dev *iio_dev,
-			 struct iio_chan_spec const *ch,
-			 int *val, int *val2, long mask)
-{
-	struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
-	int ret;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_RAW:
-		if (!iio_device_claim_direct(iio_dev))
-			return -EBUSY;
-
-		ret = st_lsm6dsx_shub_read_oneshot(sensor, ch, val);
-		iio_device_release_direct(iio_dev);
-		break;
-	case IIO_CHAN_INFO_SAMP_FREQ:
-		*val = sensor->ext_info.slv_odr / 1000;
-		*val2 = (sensor->ext_info.slv_odr % 1000) * 1000;
-		ret = IIO_VAL_INT_PLUS_MICRO;
-		break;
-	case IIO_CHAN_INFO_SCALE:
-		*val = 0;
-		*val2 = sensor->gain;
-		ret = IIO_VAL_INT_PLUS_MICRO;
-		break;
-	default:
-		ret = -EINVAL;
-		break;
-	}
-
-	return ret;
-}
-
-static int
-st_lsm6dsx_shub_set_full_scale(struct st_lsm6dsx_sensor *sensor,
-			       u32 gain)
-{
-	const struct st_lsm6dsx_fs_table_entry *fs_table;
-	int i, err;
-
-	fs_table = &sensor->ext_info.settings->fs_table;
-	if (!fs_table->reg.addr)
-		return -ENOTSUPP;
-
-	for (i = 0; i < fs_table->fs_len; i++) {
-		if (fs_table->fs_avl[i].gain == gain)
-			break;
-	}
-
-	if (i == fs_table->fs_len)
-		return -EINVAL;
-
-	err = st_lsm6dsx_shub_write_with_mask(sensor, fs_table->reg.addr,
-					      fs_table->reg.mask,
-					      fs_table->fs_avl[i].val);
-	if (err < 0)
-		return err;
-
-	sensor->gain = gain;
-
-	return 0;
-}
-
-static int
-__st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
-			    struct iio_chan_spec const *chan,
-			    int val, int val2, long mask)
-{
-	struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
-	int err;
-
-	switch (mask) {
-	case IIO_CHAN_INFO_SAMP_FREQ: {
-		struct st_lsm6dsx_hw *hw = sensor->hw;
-		struct st_lsm6dsx_sensor *ref_sensor;
-		u8 odr_val;
-		u16 data;
-		int odr;
-
-		val = val * 1000 + val2 / 1000;
-		err = st_lsm6dsx_shub_get_odr_val(sensor, val, &data);
-		if (err)
-			return err;
-
-		ref_sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
-		odr = st_lsm6dsx_check_odr(ref_sensor, val, &odr_val);
-		if (odr < 0)
-			return odr;
-
-		sensor->ext_info.slv_odr = val;
-		sensor->odr = odr;
-		sensor->hwfifo_odr_mHz = odr;
-		return 0;
-	}
-	case IIO_CHAN_INFO_SCALE:
-		return st_lsm6dsx_shub_set_full_scale(sensor, val2);
-	default:
-		return -EINVAL;
-	}
-}
-
-static int
-st_lsm6dsx_shub_write_raw(struct iio_dev *iio_dev,
-			  struct iio_chan_spec const *chan,
-			  int val, int val2, long mask)
-{
-	int ret;
-
-	if (!iio_device_claim_direct(iio_dev))
-		return -EBUSY;
-
-	ret = __st_lsm6dsx_shub_write_raw(iio_dev, chan, val, val2, mask);
-
-	iio_device_release_direct(iio_dev);
-
-	return ret;
-}
-
-static ssize_t
-st_lsm6dsx_shub_sampling_freq_avail(struct device *dev,
-				    struct device_attribute *attr,
-				    char *buf)
-{
-	struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev));
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	int i, len = 0;
-
-	settings = sensor->ext_info.settings;
-	for (i = 0; i < settings->odr_table.odr_len; i++) {
-		u32 val = settings->odr_table.odr_avl[i].milli_hz;
-
-		len += scnprintf(buf + len, PAGE_SIZE - len, "%d.%03d ",
-				 val / 1000, val % 1000);
-	}
-	buf[len - 1] = '\n';
-
-	return len;
-}
-
-static ssize_t st_lsm6dsx_shub_scale_avail(struct device *dev,
-					   struct device_attribute *attr,
-					   char *buf)
-{
-	struct st_lsm6dsx_sensor *sensor = iio_priv(dev_get_drvdata(dev));
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	int i, len = 0;
-
-	settings = sensor->ext_info.settings;
-	for (i = 0; i < settings->fs_table.fs_len; i++)
-		len += scnprintf(buf + len, PAGE_SIZE - len, "0.%06u ",
-				 settings->fs_table.fs_avl[i].gain);
-	buf[len - 1] = '\n';
-
-	return len;
-}
-
-static IIO_DEV_ATTR_SAMP_FREQ_AVAIL(st_lsm6dsx_shub_sampling_freq_avail);
-static IIO_DEVICE_ATTR(in_scale_available, 0444,
-		       st_lsm6dsx_shub_scale_avail, NULL, 0);
-static struct attribute *st_lsm6dsx_shub_attributes[] = {
-	&iio_dev_attr_sampling_frequency_available.dev_attr.attr,
-	&iio_dev_attr_in_scale_available.dev_attr.attr,
-	NULL,
-};
-
-static const struct attribute_group st_lsm6dsx_shub_attribute_group = {
-	.attrs = st_lsm6dsx_shub_attributes,
-};
-
-static const struct iio_info st_lsm6dsx_shub_info = {
-	.attrs = &st_lsm6dsx_shub_attribute_group,
-	.read_raw = st_lsm6dsx_shub_read_raw,
-	.write_raw = st_lsm6dsx_shub_write_raw,
-	.hwfifo_set_watermark = st_lsm6dsx_set_watermark,
-};
-
-static struct iio_dev *
-st_lsm6dsx_shub_alloc_iiodev(struct st_lsm6dsx_hw *hw,
-			     enum st_lsm6dsx_sensor_id id,
-			     const struct st_lsm6dsx_ext_dev_settings *info,
-			     u8 i2c_addr, const char *name)
-{
-	enum st_lsm6dsx_sensor_id ref_id = ST_LSM6DSX_ID_ACC;
-	struct iio_chan_spec *ext_channels;
-	struct st_lsm6dsx_sensor *sensor;
-	struct iio_dev *iio_dev;
-
-	iio_dev = devm_iio_device_alloc(hw->dev, sizeof(*sensor));
-	if (!iio_dev)
-		return NULL;
-
-	iio_dev->modes = INDIO_DIRECT_MODE;
-	iio_dev->info = &st_lsm6dsx_shub_info;
-
-	sensor = iio_priv(iio_dev);
-	sensor->id = id;
-	sensor->hw = hw;
-	sensor->odr = hw->settings->odr_table[ref_id].odr_avl[0].milli_hz;
-	sensor->hwfifo_odr_mHz = sensor->odr;
-	sensor->ext_info.slv_odr = info->odr_table.odr_avl[0].milli_hz;
-	sensor->gain = info->fs_table.fs_avl[0].gain;
-	sensor->ext_info.settings = info;
-	sensor->ext_info.addr = i2c_addr;
-	sensor->watermark = 1;
-
-	switch (info->id) {
-	case ST_LSM6DSX_ID_MAGN: {
-		const struct iio_chan_spec magn_channels[] = {
-			ST_LSM6DSX_CHANNEL(IIO_MAGN, info->out.addr,
-					   IIO_MOD_X, 0),
-			ST_LSM6DSX_CHANNEL(IIO_MAGN, info->out.addr + 2,
-					   IIO_MOD_Y, 1),
-			ST_LSM6DSX_CHANNEL(IIO_MAGN, info->out.addr + 4,
-					   IIO_MOD_Z, 2),
-			IIO_CHAN_SOFT_TIMESTAMP(3),
-		};
-
-		ext_channels = devm_kzalloc(hw->dev, sizeof(magn_channels),
-					    GFP_KERNEL);
-		if (!ext_channels)
-			return NULL;
-
-		memcpy(ext_channels, magn_channels, sizeof(magn_channels));
-		iio_dev->available_scan_masks = st_lsm6dsx_available_scan_masks;
-		iio_dev->channels = ext_channels;
-		iio_dev->num_channels = ARRAY_SIZE(magn_channels);
-
-		scnprintf(sensor->name, sizeof(sensor->name), "%s_magn",
-			  name);
-		break;
-	}
-	default:
-		return NULL;
-	}
-	iio_dev->name = sensor->name;
-
-	return iio_dev;
-}
-
-static int st_lsm6dsx_shub_init_device(struct st_lsm6dsx_sensor *sensor)
-{
-	const struct st_lsm6dsx_ext_dev_settings *settings;
-	int err;
-
-	settings = sensor->ext_info.settings;
-	if (settings->bdu.addr) {
-		err = st_lsm6dsx_shub_write_with_mask(sensor,
-						      settings->bdu.addr,
-						      settings->bdu.mask, 1);
-		if (err < 0)
-			return err;
-	}
-
-	if (settings->temp_comp.addr) {
-		err = st_lsm6dsx_shub_write_with_mask(sensor,
-					settings->temp_comp.addr,
-					settings->temp_comp.mask, 1);
-		if (err < 0)
-			return err;
-	}
-
-	if (settings->off_canc.addr) {
-		err = st_lsm6dsx_shub_write_with_mask(sensor,
-					settings->off_canc.addr,
-					settings->off_canc.mask, 1);
-		if (err < 0)
-			return err;
-	}
-
-	return 0;
-}
-
-static int
-st_lsm6dsx_shub_check_wai(struct st_lsm6dsx_hw *hw, u8 *i2c_addr,
-			  const struct st_lsm6dsx_ext_dev_settings *settings)
-{
-	const struct st_lsm6dsx_shub_settings *hub_settings;
-	u8 config[3], data, slv_addr, slv_config = 0;
-	const struct st_lsm6dsx_reg *aux_sens;
-	struct st_lsm6dsx_sensor *sensor;
-	bool found = false;
-	int i, err;
-
-	sensor = iio_priv(hw->iio_devs[ST_LSM6DSX_ID_ACC]);
-	hub_settings = &hw->settings->shub_settings;
-	aux_sens = &hw->settings->shub_settings.aux_sens;
-	slv_addr = ST_LSM6DSX_SLV_ADDR(0, hub_settings->slv0_addr);
-	/* do not overwrite aux_sens */
-	if (slv_addr + 2 == aux_sens->addr)
-		slv_config = ST_LSM6DSX_SHIFT_VAL(3, aux_sens->mask);
-
-	for (i = 0; i < ARRAY_SIZE(settings->i2c_addr); i++) {
-		if (!settings->i2c_addr[i])
-			continue;
-
-		/* read wai slave register */
-		config[0] = (settings->i2c_addr[i] << 1) | 0x1;
-		config[1] = settings->wai.addr;
-		config[2] = 0x1 | slv_config;
-
-		err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config,
-						sizeof(config));
-		if (err < 0)
-			return err;
-
-		err = st_lsm6dsx_shub_master_enable(sensor, true);
-		if (err < 0)
-			return err;
-
-		st_lsm6dsx_shub_wait_complete(hw);
-
-		err = st_lsm6dsx_shub_read_output(hw, &data, sizeof(data));
-
-		st_lsm6dsx_shub_master_enable(sensor, false);
-
-		if (err < 0)
-			return err;
-
-		if (data != settings->wai.val)
-			continue;
-
-		*i2c_addr = settings->i2c_addr[i];
-		found = true;
-		break;
-	}
-
-	/* reset SLV0 channel */
-	config[0] = hub_settings->pause;
-	config[1] = 0;
-	config[2] = slv_config;
-	err = st_lsm6dsx_shub_write_reg(hw, slv_addr, config,
-					sizeof(config));
-	if (err < 0)
-		return err;
-
-	return found ? 0 : -ENODEV;
-}
-
-int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name)
-{
-	enum st_lsm6dsx_sensor_id id = ST_LSM6DSX_ID_EXT0;
-	struct st_lsm6dsx_sensor *sensor;
-	int err, i, num_ext_dev = 0;
-	u8 i2c_addr = 0;
-
-	for (i = 0; i < ARRAY_SIZE(st_lsm6dsx_ext_dev_table); i++) {
-		err = st_lsm6dsx_shub_check_wai(hw, &i2c_addr,
-					&st_lsm6dsx_ext_dev_table[i]);
-		if (err == -ENODEV)
-			continue;
-		else if (err < 0)
-			return err;
-
-		hw->iio_devs[id] = st_lsm6dsx_shub_alloc_iiodev(hw, id,
-						&st_lsm6dsx_ext_dev_table[i],
-						i2c_addr, name);
-		if (!hw->iio_devs[id])
-			return -ENOMEM;
-
-		sensor = iio_priv(hw->iio_devs[id]);
-		err = st_lsm6dsx_shub_init_device(sensor);
-		if (err < 0)
-			return err;
-
-		if (++num_ext_dev >= hw->settings->shub_settings.num_ext_dev)
-			break;
-		id++;
-	}
-
-	return 0;
-}