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, scale: val2); |
548 | case IIO_CHAN_INFO_SAMP_FREQ: |
549 | if (val2) |
550 | return -EINVAL; |
551 | |
552 | return st_sensors_set_odr(indio_dev, odr: 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 | list: 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(dev: 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(dev: parent, matrix: &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); |
657 | |