st_lsm6dsx.h

  1/* SPDX-License-Identifier: GPL-2.0-only */
  2/*
  3 * STMicroelectronics st_lsm6dsx sensor driver
  4 *
  5 * Copyright 2016 STMicroelectronics Inc.
  6 *
  7 * Lorenzo Bianconi <lorenzo.bianconi@st.com>
  8 * Denis Ciocca <denis.ciocca@st.com>
  9 */
 10
 11#ifndef ST_LSM6DSX_H
 12#define ST_LSM6DSX_H
 13
 14#include <linux/device.h>
 15#include <linux/iio/iio.h>
 16#include <linux/regulator/consumer.h>
 17
 18#define ST_LSM6DS3_DEV_NAME	"lsm6ds3"
 19#define ST_LSM6DS3H_DEV_NAME	"lsm6ds3h"
 20#define ST_LSM6DSL_DEV_NAME	"lsm6dsl"
 21#define ST_LSM6DSM_DEV_NAME	"lsm6dsm"
 22#define ST_ISM330DLC_DEV_NAME	"ism330dlc"
 23#define ST_LSM6DSO_DEV_NAME	"lsm6dso"
 24#define ST_ASM330LHH_DEV_NAME	"asm330lhh"
 25#define ST_LSM6DSOX_DEV_NAME	"lsm6dsox"
 26#define ST_LSM6DSR_DEV_NAME	"lsm6dsr"
 27#define ST_LSM6DS3TRC_DEV_NAME	"lsm6ds3tr-c"
 28#define ST_ISM330DHCX_DEV_NAME	"ism330dhcx"
 29#define ST_LSM9DS1_DEV_NAME	"lsm9ds1-imu"
 30#define ST_LSM6DS0_DEV_NAME	"lsm6ds0"
 31#define ST_LSM6DSRX_DEV_NAME	"lsm6dsrx"
 32#define ST_LSM6DST_DEV_NAME	"lsm6dst"
 33#define ST_LSM6DSOP_DEV_NAME	"lsm6dsop"
 34#define ST_ASM330LHHX_DEV_NAME	"asm330lhhx"
 35#define ST_LSM6DSTX_DEV_NAME	"lsm6dstx"
 36#define ST_LSM6DSV_DEV_NAME	"lsm6dsv"
 37#define ST_LSM6DSV16X_DEV_NAME	"lsm6dsv16x"
 38#define ST_LSM6DSO16IS_DEV_NAME	"lsm6dso16is"
 39#define ST_ISM330IS_DEV_NAME	"ism330is"
 40#define ST_ASM330LHB_DEV_NAME	"asm330lhb"
 41#define ST_ASM330LHHXG1_DEV_NAME	"asm330lhhxg1"
 42
 43enum st_lsm6dsx_hw_id {
 44	ST_LSM6DS3_ID = 1,
 45	ST_LSM6DS3H_ID,
 46	ST_LSM6DSL_ID,
 47	ST_LSM6DSM_ID,
 48	ST_ISM330DLC_ID,
 49	ST_LSM6DSO_ID,
 50	ST_ASM330LHH_ID,
 51	ST_LSM6DSOX_ID,
 52	ST_LSM6DSR_ID,
 53	ST_LSM6DS3TRC_ID,
 54	ST_ISM330DHCX_ID,
 55	ST_LSM9DS1_ID,
 56	ST_LSM6DS0_ID,
 57	ST_LSM6DSRX_ID,
 58	ST_LSM6DST_ID,
 59	ST_LSM6DSOP_ID,
 60	ST_ASM330LHHX_ID,
 61	ST_LSM6DSTX_ID,
 62	ST_LSM6DSV_ID,
 63	ST_LSM6DSV16X_ID,
 64	ST_LSM6DSO16IS_ID,
 65	ST_ISM330IS_ID,
 66	ST_ASM330LHB_ID,
 67	ST_ASM330LHHXG1_ID,
 68	ST_LSM6DSX_MAX_ID,
 69};
 70
 71#define ST_LSM6DSX_BUFF_SIZE		512
 72#define ST_LSM6DSX_CHAN_SIZE		2
 73#define ST_LSM6DSX_SAMPLE_SIZE		6
 74#define ST_LSM6DSX_TAG_SIZE		1
 75#define ST_LSM6DSX_TAGGED_SAMPLE_SIZE	(ST_LSM6DSX_SAMPLE_SIZE + \
 76					 ST_LSM6DSX_TAG_SIZE)
 77#define ST_LSM6DSX_MAX_WORD_LEN		((32 / ST_LSM6DSX_SAMPLE_SIZE) * \
 78					 ST_LSM6DSX_SAMPLE_SIZE)
 79#define ST_LSM6DSX_MAX_TAGGED_WORD_LEN	((32 / ST_LSM6DSX_TAGGED_SAMPLE_SIZE) \
 80					 * ST_LSM6DSX_TAGGED_SAMPLE_SIZE)
 81#define ST_LSM6DSX_SHIFT_VAL(val, mask)	(((val) << __ffs(mask)) & (mask))
 82
 83#define ST_LSM6DSX_CHANNEL_ACC(chan_type, addr, mod, scan_idx)		\
 84{									\
 85	.type = chan_type,						\
 86	.address = addr,						\
 87	.modified = 1,							\
 88	.channel2 = mod,						\
 89	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
 90	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),		\
 91	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
 92	.scan_index = scan_idx,						\
 93	.scan_type = {							\
 94		.sign = 's',						\
 95		.realbits = 16,						\
 96		.storagebits = 16,					\
 97		.endianness = IIO_LE,					\
 98	},								\
 99	.event_spec = &st_lsm6dsx_event,				\
100	.ext_info = st_lsm6dsx_ext_info,				\
101	.num_event_specs = 1,						\
102}
103
104#define ST_LSM6DSX_CHANNEL(chan_type, addr, mod, scan_idx)		\
105{									\
106	.type = chan_type,						\
107	.address = addr,						\
108	.modified = 1,							\
109	.channel2 = mod,						\
110	.info_mask_separate = BIT(IIO_CHAN_INFO_RAW),			\
111	.info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE),		\
112	.info_mask_shared_by_all = BIT(IIO_CHAN_INFO_SAMP_FREQ),	\
113	.scan_index = scan_idx,						\
114	.scan_type = {							\
115		.sign = 's',						\
116		.realbits = 16,						\
117		.storagebits = 16,					\
118		.endianness = IIO_LE,					\
119	},								\
120	.ext_info = st_lsm6dsx_ext_info,				\
121}
122
123struct st_lsm6dsx_reg {
124	u8 addr;
125	u8 mask;
126};
127
128struct st_lsm6dsx_sensor;
129struct st_lsm6dsx_hw;
130
131struct st_lsm6dsx_odr {
132	u32 milli_hz;
133	u8 val;
134};
135
136#define ST_LSM6DSX_ODR_LIST_SIZE	8
137struct st_lsm6dsx_odr_table_entry {
138	struct st_lsm6dsx_reg reg;
139
140	struct st_lsm6dsx_odr odr_avl[ST_LSM6DSX_ODR_LIST_SIZE];
141	int odr_len;
142};
143
144struct st_lsm6dsx_samples_to_discard {
145	struct {
146		u32 milli_hz;
147		u16 samples;
148	} val[ST_LSM6DSX_ODR_LIST_SIZE];
149};
150
151struct st_lsm6dsx_fs {
152	u32 gain;
153	u8 val;
154};
155
156#define ST_LSM6DSX_FS_LIST_SIZE		4
157struct st_lsm6dsx_fs_table_entry {
158	struct st_lsm6dsx_reg reg;
159
160	struct st_lsm6dsx_fs fs_avl[ST_LSM6DSX_FS_LIST_SIZE];
161	int fs_len;
162};
163
164/**
165 * struct st_lsm6dsx_fifo_ops - ST IMU FIFO settings
166 * @update_fifo: Update FIFO configuration callback.
167 * @read_fifo: Read FIFO callback.
168 * @fifo_th: FIFO threshold register info (addr + mask).
169 * @fifo_diff: FIFO diff status register info (addr + mask).
170 * @max_size: Sensor max fifo length in FIFO words.
171 * @th_wl: FIFO threshold word length.
172 */
173struct st_lsm6dsx_fifo_ops {
174	int (*update_fifo)(struct st_lsm6dsx_sensor *sensor, bool enable);
175	int (*read_fifo)(struct st_lsm6dsx_hw *hw);
176	struct {
177		u8 addr;
178		u16 mask;
179	} fifo_th;
180	struct {
181		u8 addr;
182		u16 mask;
183	} fifo_diff;
184	u16 max_size;
185	u8 th_wl;
186};
187
188/**
189 * struct st_lsm6dsx_hw_ts_settings - ST IMU hw timer settings
190 * @timer_en: Hw timer enable register info (addr + mask).
191 * @hr_timer: Hw timer resolution register info (addr + mask).
192 * @fifo_en: Hw timer FIFO enable register info (addr + mask).
193 * @decimator: Hw timer FIFO decimator register info (addr + mask).
194 * @freq_fine: Difference in % of ODR with respect to the typical.
195 * @ts_sensitivity: Nominal timestamp sensitivity.
196 * @ts_trim_coeff: Coefficient for calculating the calibrated timestamp gain.
197 *                 This coefficient comes into play when linearizing the formula
198 *                 used to calculate the calibrated timestamp (please see the
199 *                 relevant formula in the AN for the specific IMU).
200 *                 For example, in the case of LSM6DSO we have:
201 *
202 *                  1 / (1 + x) ~= 1 - x (Taylor’s Series)
203 *                  ttrim[s] = 1 / (40000 * (1 + 0.0015 * val)) (from AN5192)
204 *                  ttrim[ns] ~= 25000 - 37.5 * val
205 *                  ttrim[ns] ~= 25000 - (37500 * val) / 1000
206 *
207 *                  so, replacing ts_sensitivity = 25000 and
208 *                  ts_trim_coeff = 37500
209 *
210 *                  ttrim[ns] ~= ts_sensitivity - (ts_trim_coeff * val) / 1000
211 */
212struct st_lsm6dsx_hw_ts_settings {
213	struct st_lsm6dsx_reg timer_en;
214	struct st_lsm6dsx_reg hr_timer;
215	struct st_lsm6dsx_reg fifo_en;
216	struct st_lsm6dsx_reg decimator;
217	u8 freq_fine;
218	u16 ts_sensitivity;
219	u16 ts_trim_coeff;
220};
221
222/**
223 * struct st_lsm6dsx_shub_settings - ST IMU hw i2c controller settings
224 * @page_mux: register page mux info (addr + mask).
225 * @master_en: master config register info (addr + mask).
226 * @pullup_en: i2c controller pull-up register info (addr + mask).
227 * @aux_sens: aux sensor register info (addr + mask).
228 * @wr_once: write_once register info (addr + mask).
229 * @emb_func:  embedded function register info (addr + mask).
230 * @num_ext_dev: max number of slave devices.
231 * @shub_out: sensor hub first output register info.
232 * @slv0_addr: slave0 address in secondary page.
233 * @dw_slv0_addr: slave0 write register address in secondary page.
234 * @batch_en: Enable/disable FIFO batching.
235 * @pause: controller pause value.
236 */
237struct st_lsm6dsx_shub_settings {
238	struct st_lsm6dsx_reg page_mux;
239	struct {
240		bool sec_page;
241		u8 addr;
242		u8 mask;
243	} master_en;
244	struct {
245		bool sec_page;
246		u8 addr;
247		u8 mask;
248	} pullup_en;
249	struct st_lsm6dsx_reg aux_sens;
250	struct st_lsm6dsx_reg wr_once;
251	struct st_lsm6dsx_reg emb_func;
252	u8 num_ext_dev;
253	struct {
254		bool sec_page;
255		u8 addr;
256	} shub_out;
257	u8 slv0_addr;
258	u8 dw_slv0_addr;
259	u8 batch_en;
260	u8 pause;
261};
262
263struct st_lsm6dsx_event_settings {
264	struct st_lsm6dsx_reg enable_reg;
265	struct st_lsm6dsx_reg wakeup_reg;
266	u8 wakeup_src_reg;
267	u8 wakeup_src_status_mask;
268	u8 wakeup_src_z_mask;
269	u8 wakeup_src_y_mask;
270	u8 wakeup_src_x_mask;
271};
272
273enum st_lsm6dsx_sensor_id {
274	ST_LSM6DSX_ID_GYRO,
275	ST_LSM6DSX_ID_ACC,
276	ST_LSM6DSX_ID_EXT0,
277	ST_LSM6DSX_ID_EXT1,
278	ST_LSM6DSX_ID_EXT2,
279	ST_LSM6DSX_ID_MAX
280};
281
282enum st_lsm6dsx_ext_sensor_id {
283	ST_LSM6DSX_ID_MAGN,
284};
285
286/**
287 * struct st_lsm6dsx_ext_dev_settings - i2c controller slave settings
288 * @i2c_addr: I2c slave address list.
289 * @wai: Wai address info.
290 * @id: external sensor id.
291 * @odr_table: Output data rate of the sensor [Hz].
292 * @fs_table: Configured sensor sensitivity table depending on full scale.
293 * @temp_comp: Temperature compensation register info (addr + mask).
294 * @pwr_table: Power on register info (addr + mask).
295 * @off_canc: Offset cancellation register info (addr + mask).
296 * @bdu: Block data update register info (addr + mask).
297 * @out: Output register info.
298 */
299struct st_lsm6dsx_ext_dev_settings {
300	u8 i2c_addr[2];
301	struct {
302		u8 addr;
303		u8 val;
304	} wai;
305	enum st_lsm6dsx_ext_sensor_id id;
306	struct st_lsm6dsx_odr_table_entry odr_table;
307	struct st_lsm6dsx_fs_table_entry fs_table;
308	struct st_lsm6dsx_reg temp_comp;
309	struct {
310		struct st_lsm6dsx_reg reg;
311		u8 off_val;
312		u8 on_val;
313	} pwr_table;
314	struct st_lsm6dsx_reg off_canc;
315	struct st_lsm6dsx_reg bdu;
316	struct {
317		u8 addr;
318		u8 len;
319	} out;
320};
321
322/**
323 * struct st_lsm6dsx_settings - ST IMU sensor settings
324 * @reset: register address for reset.
325 * @boot: register address for boot.
326 * @bdu: register address for Block Data Update.
327 * @id: List of hw id/device name supported by the driver configuration.
328 * @channels: IIO channels supported by the device.
329 * @irq_config: interrupts related registers.
330 * @drdy_mask: register info for data-ready mask (addr + mask).
331 * @odr_table: Hw sensors odr table (Hz + val).
332 * @samples_to_discard: Number of samples to discard for filters settling time.
333 * @fs_table: Hw sensors gain table (gain + val).
334 * @decimator: List of decimator register info (addr + mask).
335 * @batch: List of FIFO batching register info (addr + mask).
336 * @fifo_ops: Sensor hw FIFO parameters.
337 * @ts_settings: Hw timer related settings.
338 * @shub_settings: i2c controller related settings.
339 */
340struct st_lsm6dsx_settings {
341	struct st_lsm6dsx_reg reset;
342	struct st_lsm6dsx_reg boot;
343	struct st_lsm6dsx_reg bdu;
344	struct {
345		enum st_lsm6dsx_hw_id hw_id;
346		const char *name;
347		u8 wai;
348	} id[ST_LSM6DSX_MAX_ID];
349	struct {
350		const struct iio_chan_spec *chan;
351		int len;
352	} channels[2];
353	struct {
354		struct st_lsm6dsx_reg irq1;
355		struct st_lsm6dsx_reg irq2;
356		struct st_lsm6dsx_reg irq1_func;
357		struct st_lsm6dsx_reg irq2_func;
358		struct st_lsm6dsx_reg lir;
359		struct st_lsm6dsx_reg clear_on_read;
360		struct st_lsm6dsx_reg hla;
361		struct st_lsm6dsx_reg od;
362	} irq_config;
363	struct st_lsm6dsx_reg drdy_mask;
364	struct st_lsm6dsx_odr_table_entry odr_table[2];
365	struct st_lsm6dsx_samples_to_discard samples_to_discard[2];
366	struct st_lsm6dsx_fs_table_entry fs_table[2];
367	struct st_lsm6dsx_reg decimator[ST_LSM6DSX_ID_MAX];
368	struct st_lsm6dsx_reg batch[2];
369	struct st_lsm6dsx_fifo_ops fifo_ops;
370	struct st_lsm6dsx_hw_ts_settings ts_settings;
371	struct st_lsm6dsx_shub_settings shub_settings;
372	struct st_lsm6dsx_event_settings event_settings;
373};
374
375enum st_lsm6dsx_fifo_mode {
376	ST_LSM6DSX_FIFO_BYPASS = 0x0,
377	ST_LSM6DSX_FIFO_CONT = 0x6,
378};
379
380/**
381 * struct st_lsm6dsx_sensor - ST IMU sensor instance
382 * @name: Sensor name.
383 * @id: Sensor identifier.
384 * @hw: Pointer to instance of struct st_lsm6dsx_hw.
385 * @gain: Configured sensor sensitivity.
386 * @odr: Output data rate of the sensor [mHz].
387 * hwfifo_odr_mHz: Batch data rate for hardware FIFO [mHz]
388 * @samples_to_discard: Number of samples to discard for filters settling time.
389 * @watermark: Sensor watermark level.
390 * @decimator: Sensor decimation factor.
391 * @sip: Number of samples in a given pattern.
392 * @ts_ref: Sensor timestamp reference for hw one.
393 * @ext_info: Sensor settings if it is connected to i2c controller
394 */
395struct st_lsm6dsx_sensor {
396	char name[32];
397	enum st_lsm6dsx_sensor_id id;
398	struct st_lsm6dsx_hw *hw;
399
400	u32 gain;
401	u32 odr;
402	u32 hwfifo_odr_mHz;
403
404	u16 samples_to_discard;
405	u16 watermark;
406	u8 decimator;
407	u8 sip;
408	s64 ts_ref;
409
410	struct {
411		const struct st_lsm6dsx_ext_dev_settings *settings;
412		u32 slv_odr;
413		u8 addr;
414	} ext_info;
415};
416
417/**
418 * struct st_lsm6dsx_hw - ST IMU MEMS hw instance
419 * @dev: Pointer to instance of struct device (I2C or SPI).
420 * @regmap: Register map of the device.
421 * @irq: Device interrupt line (I2C or SPI).
422 * @fifo_lock: Mutex to prevent concurrent access to the hw FIFO.
423 * @conf_lock: Mutex to prevent concurrent FIFO configuration update.
424 * @page_lock: Mutex to prevent concurrent memory page configuration.
425 * @suspend_mask: Suspended sensor bitmask.
426 * @enable_mask: Enabled sensor bitmask.
427 * @fifo_mask: Enabled hw FIFO bitmask.
428 * @ts_gain: Hw timestamp rate after internal calibration.
429 * @ts_sip: Total number of timestamp samples in a given pattern.
430 * @sip: Total number of samples (acc/gyro/ts) in a given pattern.
431 * @buff: Device read buffer.
432 * @irq_routing: pointer to interrupt routing configuration.
433 * @event_threshold: wakeup event threshold.
434 * @enable_event: enabled event bitmask.
435 * @iio_devs: Pointers to acc/gyro iio_dev instances.
436 * @settings: Pointer to the specific sensor settings in use.
437 * @orientation: sensor chip orientation relative to main hardware.
438 * @scan: Temporary buffers used to align data before iio_push_to_buffers()
439 */
440struct st_lsm6dsx_hw {
441	struct device *dev;
442	struct regmap *regmap;
443	int irq;
444
445	struct mutex fifo_lock;
446	struct mutex conf_lock;
447	struct mutex page_lock;
448
449	u8 suspend_mask;
450	u8 enable_mask;
451	u8 fifo_mask;
452	s64 ts_gain;
453	u8 ts_sip;
454	u8 sip;
455
456	const struct st_lsm6dsx_reg *irq_routing;
457	u8 event_threshold;
458	u8 enable_event;
459
460	u8 *buff;
461
462	struct iio_dev *iio_devs[ST_LSM6DSX_ID_MAX];
463
464	const struct st_lsm6dsx_settings *settings;
465
466	struct iio_mount_matrix orientation;
467	/* Ensure natural alignment of buffer elements */
468	struct {
469		__le16 channels[3];
470		aligned_s64 ts;
471	} scan[ST_LSM6DSX_ID_MAX];
472};
473
474static __maybe_unused const struct iio_event_spec st_lsm6dsx_event = {
475	.type = IIO_EV_TYPE_THRESH,
476	.dir = IIO_EV_DIR_EITHER,
477	.mask_separate = BIT(IIO_EV_INFO_VALUE) |
478			 BIT(IIO_EV_INFO_ENABLE)
479};
480
481static __maybe_unused const unsigned long st_lsm6dsx_available_scan_masks[] = {
482	0x7, 0x0,
483};
484
485extern const struct dev_pm_ops st_lsm6dsx_pm_ops;
486
487int st_lsm6dsx_probe(struct device *dev, int irq, int hw_id,
488		     struct regmap *regmap);
489int st_lsm6dsx_sensor_set_enable(struct st_lsm6dsx_sensor *sensor,
490				 bool enable);
491int st_lsm6dsx_fifo_setup(struct st_lsm6dsx_hw *hw);
492int st_lsm6dsx_set_watermark(struct iio_dev *iio_dev, unsigned int val);
493int st_lsm6dsx_update_watermark(struct st_lsm6dsx_sensor *sensor,
494				u16 watermark);
495int st_lsm6dsx_update_fifo(struct st_lsm6dsx_sensor *sensor, bool enable);
496int st_lsm6dsx_flush_fifo(struct st_lsm6dsx_hw *hw);
497int st_lsm6dsx_resume_fifo(struct st_lsm6dsx_hw *hw);
498int st_lsm6dsx_read_fifo(struct st_lsm6dsx_hw *hw);
499int st_lsm6dsx_read_tagged_fifo(struct st_lsm6dsx_hw *hw);
500int st_lsm6dsx_check_odr(struct st_lsm6dsx_sensor *sensor, u32 odr, u8 *val);
501int st_lsm6dsx_shub_probe(struct st_lsm6dsx_hw *hw, const char *name);
502int st_lsm6dsx_shub_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable);
503int st_lsm6dsx_shub_read_output(struct st_lsm6dsx_hw *hw, u8 *data, int len);
504int st_lsm6dsx_set_page(struct st_lsm6dsx_hw *hw, bool enable);
505
506static inline int
507st_lsm6dsx_update_bits_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
508			      unsigned int mask, unsigned int val)
509{
510	int err;
511
512	mutex_lock(&hw->page_lock);
513	err = regmap_update_bits(hw->regmap, addr, mask, val);
514	mutex_unlock(&hw->page_lock);
515
516	return err;
517}
518
519static inline int
520st_lsm6dsx_read_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
521		       void *val, unsigned int len)
522{
523	int err;
524
525	mutex_lock(&hw->page_lock);
526	err = regmap_bulk_read(hw->regmap, addr, val, len);
527	mutex_unlock(&hw->page_lock);
528
529	return err;
530}
531
532static inline int
533st_lsm6dsx_write_locked(struct st_lsm6dsx_hw *hw, unsigned int addr,
534			unsigned int val)
535{
536	int err;
537
538	mutex_lock(&hw->page_lock);
539	err = regmap_write(hw->regmap, addr, val);
540	mutex_unlock(&hw->page_lock);
541
542	return err;
543}
544
545static inline const struct iio_mount_matrix *
546st_lsm6dsx_get_mount_matrix(const struct iio_dev *iio_dev,
547			    const struct iio_chan_spec *chan)
548{
549	struct st_lsm6dsx_sensor *sensor = iio_priv(iio_dev);
550	struct st_lsm6dsx_hw *hw = sensor->hw;
551
552	return &hw->orientation;
553}
554
555static inline int
556st_lsm6dsx_device_set_enable(struct st_lsm6dsx_sensor *sensor, bool enable)
557{
558	if (sensor->id == ST_LSM6DSX_ID_EXT0 ||
559	    sensor->id == ST_LSM6DSX_ID_EXT1 ||
560	    sensor->id == ST_LSM6DSX_ID_EXT2)
561		return st_lsm6dsx_shub_set_enable(sensor, enable);
562
563	return st_lsm6dsx_sensor_set_enable(sensor, enable);
564}
565
566static const
567struct iio_chan_spec_ext_info __maybe_unused st_lsm6dsx_ext_info[] = {
568	IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_lsm6dsx_get_mount_matrix),
569	{ }
570};
571
572#endif /* ST_LSM6DSX_H */