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module: Convert symbol namespace to string literal
[linux.git] / drivers / iio / magnetometer / st_magn_core.c
blobef348d316c001e0326c196c181a433b45447f2cf
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * STMicroelectronics magnetometers driver
4 *
5 * Copyright 2012-2013 STMicroelectronics Inc.
6 *
7 * Denis Ciocca <denis.ciocca@st.com>
8 */
9
10 #include <linux/kernel.h>
11 #include <linux/module.h>
12 #include <linux/mutex.h>
13 #include <linux/sysfs.h>
14 #include <linux/iio/iio.h>
15 #include <linux/iio/sysfs.h>
16 #include <linux/iio/trigger.h>
17
18 #include <linux/iio/common/st_sensors.h>
19 #include "st_magn.h"
20
21 #define ST_MAGN_NUMBER_DATA_CHANNELS 3
22
23 /* DEFAULT VALUE FOR SENSORS */
24 #define ST_MAGN_DEFAULT_OUT_X_H_ADDR 0x03
25 #define ST_MAGN_DEFAULT_OUT_Y_H_ADDR 0x07
26 #define ST_MAGN_DEFAULT_OUT_Z_H_ADDR 0x05
27
28 /* FULLSCALE */
29 #define ST_MAGN_FS_AVL_1300MG 1300
30 #define ST_MAGN_FS_AVL_1900MG 1900
31 #define ST_MAGN_FS_AVL_2000MG 2000
32 #define ST_MAGN_FS_AVL_2500MG 2500
33 #define ST_MAGN_FS_AVL_4000MG 4000
34 #define ST_MAGN_FS_AVL_4700MG 4700
35 #define ST_MAGN_FS_AVL_5600MG 5600
36 #define ST_MAGN_FS_AVL_8000MG 8000
37 #define ST_MAGN_FS_AVL_8100MG 8100
38 #define ST_MAGN_FS_AVL_12000MG 12000
39 #define ST_MAGN_FS_AVL_15000MG 15000
40 #define ST_MAGN_FS_AVL_16000MG 16000
41
42 /* Special L addresses for Sensor 2 */
43 #define ST_MAGN_2_OUT_X_L_ADDR 0x28
44 #define ST_MAGN_2_OUT_Y_L_ADDR 0x2a
45 #define ST_MAGN_2_OUT_Z_L_ADDR 0x2c
46
47 /* Special L addresses for sensor 3 */
48 #define ST_MAGN_3_OUT_X_L_ADDR 0x68
49 #define ST_MAGN_3_OUT_Y_L_ADDR 0x6a
50 #define ST_MAGN_3_OUT_Z_L_ADDR 0x6c
51
52 /* Special L addresses for sensor 4 */
53 #define ST_MAGN_4_OUT_X_L_ADDR 0x08
54 #define ST_MAGN_4_OUT_Y_L_ADDR 0x0a
55 #define ST_MAGN_4_OUT_Z_L_ADDR 0x0c
56
57 static const struct iio_mount_matrix *
58 st_magn_get_mount_matrix(const struct iio_dev *indio_dev,
59 const struct iio_chan_spec *chan)
60 {
61 struct st_sensor_data *mdata = iio_priv(indio_dev);
62
63 return &mdata->mount_matrix;
64 }
65
66 static const struct iio_chan_spec_ext_info st_magn_mount_matrix_ext_info[] = {
67 IIO_MOUNT_MATRIX(IIO_SHARED_BY_ALL, st_magn_get_mount_matrix),
68 { }
69 };
70
71 static const struct iio_chan_spec st_magn_16bit_channels[] = {
72 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
73 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
74 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_BE, 16, 16,
75 ST_MAGN_DEFAULT_OUT_X_H_ADDR,
76 st_magn_mount_matrix_ext_info),
77 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
78 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
79 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_BE, 16, 16,
80 ST_MAGN_DEFAULT_OUT_Y_H_ADDR,
81 st_magn_mount_matrix_ext_info),
82 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
83 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
84 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_BE, 16, 16,
85 ST_MAGN_DEFAULT_OUT_Z_H_ADDR,
86 st_magn_mount_matrix_ext_info),
87 IIO_CHAN_SOFT_TIMESTAMP(3)
88 };
89
90 static const struct iio_chan_spec st_magn_2_16bit_channels[] = {
91 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
92 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
93 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
94 ST_MAGN_2_OUT_X_L_ADDR,
95 st_magn_mount_matrix_ext_info),
96 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
97 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
98 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
99 ST_MAGN_2_OUT_Y_L_ADDR,
100 st_magn_mount_matrix_ext_info),
101 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
102 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
103 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
104 ST_MAGN_2_OUT_Z_L_ADDR,
105 st_magn_mount_matrix_ext_info),
106 IIO_CHAN_SOFT_TIMESTAMP(3)
107 };
108
109 static const struct iio_chan_spec st_magn_3_16bit_channels[] = {
110 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
111 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
112 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
113 ST_MAGN_3_OUT_X_L_ADDR,
114 st_magn_mount_matrix_ext_info),
115 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
116 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
117 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
118 ST_MAGN_3_OUT_Y_L_ADDR,
119 st_magn_mount_matrix_ext_info),
120 ST_SENSORS_LSM_CHANNELS_EXT(IIO_MAGN,
121 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
122 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
123 ST_MAGN_3_OUT_Z_L_ADDR,
124 st_magn_mount_matrix_ext_info),
125 IIO_CHAN_SOFT_TIMESTAMP(3)
126 };
127
128 static const struct iio_chan_spec st_magn_4_16bit_channels[] = {
129 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
130 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
131 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
132 ST_MAGN_4_OUT_X_L_ADDR),
133 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
134 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
135 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
136 ST_MAGN_4_OUT_Y_L_ADDR),
137 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
138 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
139 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
140 ST_MAGN_4_OUT_Z_L_ADDR),
141 IIO_CHAN_SOFT_TIMESTAMP(3)
142 };
143
144 static const struct st_sensor_settings st_magn_sensors_settings[] = {
145 {
146 .wai = 0, /* This sensor has no valid WhoAmI report 0 */
147 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
148 .sensors_supported = {
149 [0] = LSM303DLH_MAGN_DEV_NAME,
150 },
151 .ch = (struct iio_chan_spec *)st_magn_16bit_channels,
152 .odr = {
153 .addr = 0x00,
154 .mask = 0x1c,
155 .odr_avl = {
156 { .hz = 1, .value = 0x00 },
157 { .hz = 2, .value = 0x01 },
158 { .hz = 3, .value = 0x02 },
159 { .hz = 8, .value = 0x03 },
160 { .hz = 15, .value = 0x04 },
161 { .hz = 30, .value = 0x05 },
162 { .hz = 75, .value = 0x06 },
163 /* 220 Hz, 0x07 reportedly exist */
164 },
165 },
166 .pw = {
167 .addr = 0x02,
168 .mask = 0x03,
169 .value_on = 0x00,
170 .value_off = 0x03,
171 },
172 .fs = {
173 .addr = 0x01,
174 .mask = 0xe0,
175 .fs_avl = {
176 [0] = {
177 .num = ST_MAGN_FS_AVL_1300MG,
178 .value = 0x01,
179 .gain = 1100,
180 .gain2 = 980,
181 },
182 [1] = {
183 .num = ST_MAGN_FS_AVL_1900MG,
184 .value = 0x02,
185 .gain = 855,
186 .gain2 = 760,
187 },
188 [2] = {
189 .num = ST_MAGN_FS_AVL_2500MG,
190 .value = 0x03,
191 .gain = 670,
192 .gain2 = 600,
193 },
194 [3] = {
195 .num = ST_MAGN_FS_AVL_4000MG,
196 .value = 0x04,
197 .gain = 450,
198 .gain2 = 400,
199 },
200 [4] = {
201 .num = ST_MAGN_FS_AVL_4700MG,
202 .value = 0x05,
203 .gain = 400,
204 .gain2 = 355,
205 },
206 [5] = {
207 .num = ST_MAGN_FS_AVL_5600MG,
208 .value = 0x06,
209 .gain = 330,
210 .gain2 = 295,
211 },
212 [6] = {
213 .num = ST_MAGN_FS_AVL_8100MG,
214 .value = 0x07,
215 .gain = 230,
216 .gain2 = 205,
217 },
218 },
219 },
220 .multi_read_bit = false,
221 .bootime = 2,
222 },
223 {
224 .wai = 0x3c,
225 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
226 .sensors_supported = {
227 [0] = LSM303DLHC_MAGN_DEV_NAME,
228 [1] = LSM303DLM_MAGN_DEV_NAME,
229 },
230 .ch = (struct iio_chan_spec *)st_magn_16bit_channels,
231 .odr = {
232 .addr = 0x00,
233 .mask = 0x1c,
234 .odr_avl = {
235 { .hz = 1, .value = 0x00 },
236 { .hz = 2, .value = 0x01 },
237 { .hz = 3, .value = 0x02 },
238 { .hz = 8, .value = 0x03 },
239 { .hz = 15, .value = 0x04 },
240 { .hz = 30, .value = 0x05 },
241 { .hz = 75, .value = 0x06 },
242 { .hz = 220, .value = 0x07 },
243 },
244 },
245 .pw = {
246 .addr = 0x02,
247 .mask = 0x03,
248 .value_on = 0x00,
249 .value_off = 0x03,
250 },
251 .fs = {
252 .addr = 0x01,
253 .mask = 0xe0,
254 .fs_avl = {
255 [0] = {
256 .num = ST_MAGN_FS_AVL_1300MG,
257 .value = 0x01,
258 .gain = 909,
259 .gain2 = 1020,
260 },
261 [1] = {
262 .num = ST_MAGN_FS_AVL_1900MG,
263 .value = 0x02,
264 .gain = 1169,
265 .gain2 = 1315,
266 },
267 [2] = {
268 .num = ST_MAGN_FS_AVL_2500MG,
269 .value = 0x03,
270 .gain = 1492,
271 .gain2 = 1666,
272 },
273 [3] = {
274 .num = ST_MAGN_FS_AVL_4000MG,
275 .value = 0x04,
276 .gain = 2222,
277 .gain2 = 2500,
278 },
279 [4] = {
280 .num = ST_MAGN_FS_AVL_4700MG,
281 .value = 0x05,
282 .gain = 2500,
283 .gain2 = 2816,
284 },
285 [5] = {
286 .num = ST_MAGN_FS_AVL_5600MG,
287 .value = 0x06,
288 .gain = 3030,
289 .gain2 = 3389,
290 },
291 [6] = {
292 .num = ST_MAGN_FS_AVL_8100MG,
293 .value = 0x07,
294 .gain = 4347,
295 .gain2 = 4878,
296 },
297 },
298 },
299 .multi_read_bit = false,
300 .bootime = 2,
301 },
302 {
303 .wai = 0x3d,
304 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
305 .sensors_supported = {
306 [0] = LIS3MDL_MAGN_DEV_NAME,
307 [1] = LSM9DS1_MAGN_DEV_NAME,
308 [2] = LSM303C_MAGN_DEV_NAME,
309 },
310 .ch = (struct iio_chan_spec *)st_magn_2_16bit_channels,
311 .odr = {
312 .addr = 0x20,
313 .mask = 0x1c,
314 .odr_avl = {
315 { .hz = 1, .value = 0x00 },
316 { .hz = 2, .value = 0x01 },
317 { .hz = 3, .value = 0x02 },
318 { .hz = 5, .value = 0x03 },
319 { .hz = 10, .value = 0x04 },
320 { .hz = 20, .value = 0x05 },
321 { .hz = 40, .value = 0x06 },
322 { .hz = 80, .value = 0x07 },
323 },
324 },
325 .pw = {
326 .addr = 0x22,
327 .mask = 0x03,
328 .value_on = 0x00,
329 .value_off = 0x03,
330 },
331 .fs = {
332 .addr = 0x21,
333 .mask = 0x60,
334 .fs_avl = {
335 [0] = {
336 .num = ST_MAGN_FS_AVL_4000MG,
337 .value = 0x00,
338 .gain = 146,
339 },
340 [1] = {
341 .num = ST_MAGN_FS_AVL_8000MG,
342 .value = 0x01,
343 .gain = 292,
344 },
345 [2] = {
346 .num = ST_MAGN_FS_AVL_12000MG,
347 .value = 0x02,
348 .gain = 438,
349 },
350 [3] = {
351 .num = ST_MAGN_FS_AVL_16000MG,
352 .value = 0x03,
353 .gain = 584,
354 },
355 },
356 },
357 .bdu = {
358 .addr = 0x24,
359 .mask = 0x40,
360 },
361 .drdy_irq = {
362 /* drdy line is routed drdy pin */
363 .stat_drdy = {
364 .addr = ST_SENSORS_DEFAULT_STAT_ADDR,
365 .mask = 0x07,
366 },
367 },
368 .sim = {
369 .addr = 0x22,
370 .value = BIT(2),
371 },
372 .multi_read_bit = true,
373 .bootime = 2,
374 },
375 {
376 .wai = 0x40,
377 .wai_addr = 0x4f,
378 .sensors_supported = {
379 [0] = LSM303AGR_MAGN_DEV_NAME,
380 [1] = LIS2MDL_MAGN_DEV_NAME,
381 [2] = IIS2MDC_MAGN_DEV_NAME,
382 },
383 .ch = (struct iio_chan_spec *)st_magn_3_16bit_channels,
384 .odr = {
385 .addr = 0x60,
386 .mask = 0x0c,
387 .odr_avl = {
388 { .hz = 10, .value = 0x00 },
389 { .hz = 20, .value = 0x01 },
390 { .hz = 50, .value = 0x02 },
391 { .hz = 100, .value = 0x03 },
392 },
393 },
394 .pw = {
395 .addr = 0x60,
396 .mask = 0x03,
397 .value_on = 0x00,
398 .value_off = 0x03,
399 },
400 .fs = {
401 .fs_avl = {
402 [0] = {
403 .num = ST_MAGN_FS_AVL_15000MG,
404 .gain = 1500,
405 },
406 },
407 },
408 .bdu = {
409 .addr = 0x62,
410 .mask = 0x10,
411 },
412 .drdy_irq = {
413 .int1 = {
414 .addr = 0x62,
415 .mask = 0x01,
416 },
417 .stat_drdy = {
418 .addr = 0x67,
419 .mask = 0x07,
420 },
421 },
422 .multi_read_bit = false,
423 .bootime = 2,
424 },
425 {
426 .wai = 0x49,
427 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
428 .sensors_supported = {
429 [0] = LSM9DS0_IMU_DEV_NAME,
430 [1] = LSM303D_IMU_DEV_NAME,
431 },
432 .ch = (struct iio_chan_spec *)st_magn_4_16bit_channels,
433 .odr = {
434 .addr = 0x24,
435 .mask = GENMASK(4, 2),
436 .odr_avl = {
437 { 3, 0x00, },
438 { 6, 0x01, },
439 { 12, 0x02, },
440 { 25, 0x03, },
441 { 50, 0x04, },
442 { 100, 0x05, },
443 },
444 },
445 .pw = {
446 .addr = 0x26,
447 .mask = GENMASK(1, 0),
448 .value_on = 0x00,
449 .value_off = 0x03,
450 },
451 .fs = {
452 .addr = 0x25,
453 .mask = GENMASK(6, 5),
454 .fs_avl = {
455 [0] = {
456 .num = ST_MAGN_FS_AVL_2000MG,
457 .value = 0x00,
458 .gain = 73,
459 },
460 [1] = {
461 .num = ST_MAGN_FS_AVL_4000MG,
462 .value = 0x01,
463 .gain = 146,
464 },
465 [2] = {
466 .num = ST_MAGN_FS_AVL_8000MG,
467 .value = 0x02,
468 .gain = 292,
469 },
470 [3] = {
471 .num = ST_MAGN_FS_AVL_12000MG,
472 .value = 0x03,
473 .gain = 438,
474 },
475 },
476 },
477 .bdu = {
478 .addr = 0x20,
479 .mask = BIT(3),
480 },
481 .drdy_irq = {
482 .int1 = {
483 .addr = 0x22,
484 .mask = BIT(1),
485 },
486 .int2 = {
487 .addr = 0x23,
488 .mask = BIT(2),
489 },
490 .stat_drdy = {
491 .addr = 0x07,
492 .mask = GENMASK(2, 0),
493 },
494 },
495 .sim = {
496 .addr = 0x21,
497 .value = BIT(0),
498 },
499 .multi_read_bit = true,
500 .bootime = 2,
501 },
502 };
503
504 /* Default magn DRDY is available on INT2 pin */
505 static const struct st_sensors_platform_data default_magn_pdata = {
506 .drdy_int_pin = 2,
507 };
508
509 static int st_magn_read_raw(struct iio_dev *indio_dev,
510 struct iio_chan_spec const *ch, int *val,
511 int *val2, long mask)
512 {
513 int err;
514 struct st_sensor_data *mdata = iio_priv(indio_dev);
515
516 switch (mask) {
517 case IIO_CHAN_INFO_RAW:
518 err = st_sensors_read_info_raw(indio_dev, ch, val);
519 if (err < 0)
520 goto read_error;
521
522 return IIO_VAL_INT;
523 case IIO_CHAN_INFO_SCALE:
524 *val = 0;
525 if ((ch->scan_index == ST_SENSORS_SCAN_Z) &&
526 (mdata->current_fullscale->gain2 != 0))
527 *val2 = mdata->current_fullscale->gain2;
528 else
529 *val2 = mdata->current_fullscale->gain;
530 return IIO_VAL_INT_PLUS_MICRO;
531 case IIO_CHAN_INFO_SAMP_FREQ:
532 *val = mdata->odr;
533 return IIO_VAL_INT;
534 default:
535 return -EINVAL;
536 }
537
538 read_error:
539 return err;
540 }
541
542 static int st_magn_write_raw(struct iio_dev *indio_dev,
543 struct iio_chan_spec const *chan, int val, int val2, long mask)
544 {
545 switch (mask) {
546 case IIO_CHAN_INFO_SCALE:
547 return st_sensors_set_fullscale_by_gain(indio_dev, val2);
548 case IIO_CHAN_INFO_SAMP_FREQ:
549 if (val2)
550 return -EINVAL;
551
552 return st_sensors_set_odr(indio_dev, val);
553 default:
554 return -EINVAL;
555 }
556 }
557
558 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
559 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_magn_scale_available);
560
561 static struct attribute *st_magn_attributes[] = {
562 &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
563 &iio_dev_attr_in_magn_scale_available.dev_attr.attr,
564 NULL,
565 };
566
567 static const struct attribute_group st_magn_attribute_group = {
568 .attrs = st_magn_attributes,
569 };
570
571 static const struct iio_info magn_info = {
572 .attrs = &st_magn_attribute_group,
573 .read_raw = &st_magn_read_raw,
574 .write_raw = &st_magn_write_raw,
575 .debugfs_reg_access = &st_sensors_debugfs_reg_access,
576 };
577
578 #ifdef CONFIG_IIO_TRIGGER
579 static const struct iio_trigger_ops st_magn_trigger_ops = {
580 .set_trigger_state = ST_MAGN_TRIGGER_SET_STATE,
581 .validate_device = st_sensors_validate_device,
582 };
583 #define ST_MAGN_TRIGGER_OPS (&st_magn_trigger_ops)
584 #else
585 #define ST_MAGN_TRIGGER_OPS NULL
586 #endif
587
588 /*
589 * st_magn_get_settings() - get sensor settings from device name
590 * @name: device name buffer reference.
591 *
592 * Return: valid reference on success, NULL otherwise.
593 */
594 const struct st_sensor_settings *st_magn_get_settings(const char *name)
595 {
596 int index = st_sensors_get_settings_index(name,
597 st_magn_sensors_settings,
598 ARRAY_SIZE(st_magn_sensors_settings));
599 if (index < 0)
600 return NULL;
601
602 return &st_magn_sensors_settings[index];
603 }
604 EXPORT_SYMBOL_NS(st_magn_get_settings, "IIO_ST_SENSORS");
605
606 int st_magn_common_probe(struct iio_dev *indio_dev)
607 {
608 struct st_sensor_data *mdata = iio_priv(indio_dev);
609 struct device *parent = indio_dev->dev.parent;
610 struct st_sensors_platform_data *pdata = dev_get_platdata(parent);
611 int err;
612
613 indio_dev->modes = INDIO_DIRECT_MODE;
614 indio_dev->info = &magn_info;
615
616 err = st_sensors_verify_id(indio_dev);
617 if (err < 0)
618 return err;
619
620 mdata->num_data_channels = ST_MAGN_NUMBER_DATA_CHANNELS;
621 indio_dev->channels = mdata->sensor_settings->ch;
622 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
623
624 err = iio_read_mount_matrix(parent, &mdata->mount_matrix);
625 if (err)
626 return err;
627
628 mdata->current_fullscale = &mdata->sensor_settings->fs.fs_avl[0];
629 mdata->odr = mdata->sensor_settings->odr.odr_avl[0].hz;
630
631 if (!pdata)
632 pdata = (struct st_sensors_platform_data *)&default_magn_pdata;
633
634 err = st_sensors_init_sensor(indio_dev, pdata);
635 if (err < 0)
636 return err;
637
638 err = st_magn_allocate_ring(indio_dev);
639 if (err < 0)
640 return err;
641
642 if (mdata->irq > 0) {
643 err = st_sensors_allocate_trigger(indio_dev,
644 ST_MAGN_TRIGGER_OPS);
645 if (err < 0)
646 return err;
647 }
648
649 return devm_iio_device_register(parent, indio_dev);
650 }
651 EXPORT_SYMBOL_NS(st_magn_common_probe, "IIO_ST_SENSORS");
652
653 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
654 MODULE_DESCRIPTION("STMicroelectronics magnetometers driver");
655 MODULE_LICENSE("GPL v2");
656 MODULE_IMPORT_NS("IIO_ST_SENSORS");
Linux Kernel