2 * STMicroelectronics magnetometers driver
4 * Copyright 2012-2013 STMicroelectronics Inc.
6 * Denis Ciocca <denis.ciocca@st.com>
8 * Licensed under the GPL-2.
11 #include <linux/kernel.h>
12 #include <linux/module.h>
13 #include <linux/slab.h>
14 #include <linux/errno.h>
15 #include <linux/types.h>
16 #include <linux/mutex.h>
17 #include <linux/interrupt.h>
18 #include <linux/i2c.h>
19 #include <linux/gpio.h>
20 #include <linux/irq.h>
21 #include <linux/delay.h>
22 #include <linux/iio/iio.h>
23 #include <linux/iio/sysfs.h>
24 #include <linux/iio/buffer.h>
26 #include <linux/iio/common/st_sensors.h>
29 #define ST_MAGN_NUMBER_DATA_CHANNELS 3
31 /* DEFAULT VALUE FOR SENSORS */
32 #define ST_MAGN_DEFAULT_OUT_X_H_ADDR 0X03
33 #define ST_MAGN_DEFAULT_OUT_Y_H_ADDR 0X07
34 #define ST_MAGN_DEFAULT_OUT_Z_H_ADDR 0X05
37 #define ST_MAGN_FS_AVL_1300MG 1300
38 #define ST_MAGN_FS_AVL_1900MG 1900
39 #define ST_MAGN_FS_AVL_2500MG 2500
40 #define ST_MAGN_FS_AVL_4000MG 4000
41 #define ST_MAGN_FS_AVL_4700MG 4700
42 #define ST_MAGN_FS_AVL_5600MG 5600
43 #define ST_MAGN_FS_AVL_8000MG 8000
44 #define ST_MAGN_FS_AVL_8100MG 8100
45 #define ST_MAGN_FS_AVL_12000MG 12000
46 #define ST_MAGN_FS_AVL_16000MG 16000
48 /* CUSTOM VALUES FOR SENSOR 0 */
49 #define ST_MAGN_0_ODR_ADDR 0x00
50 #define ST_MAGN_0_ODR_MASK 0x1c
51 #define ST_MAGN_0_ODR_AVL_1HZ_VAL 0x00
52 #define ST_MAGN_0_ODR_AVL_2HZ_VAL 0x01
53 #define ST_MAGN_0_ODR_AVL_3HZ_VAL 0x02
54 #define ST_MAGN_0_ODR_AVL_8HZ_VAL 0x03
55 #define ST_MAGN_0_ODR_AVL_15HZ_VAL 0x04
56 #define ST_MAGN_0_ODR_AVL_30HZ_VAL 0x05
57 #define ST_MAGN_0_ODR_AVL_75HZ_VAL 0x06
58 #define ST_MAGN_0_ODR_AVL_220HZ_VAL 0x07
59 #define ST_MAGN_0_PW_ADDR 0x02
60 #define ST_MAGN_0_PW_MASK 0x03
61 #define ST_MAGN_0_PW_ON 0x00
62 #define ST_MAGN_0_PW_OFF 0x03
63 #define ST_MAGN_0_FS_ADDR 0x01
64 #define ST_MAGN_0_FS_MASK 0xe0
65 #define ST_MAGN_0_FS_AVL_1300_VAL 0x01
66 #define ST_MAGN_0_FS_AVL_1900_VAL 0x02
67 #define ST_MAGN_0_FS_AVL_2500_VAL 0x03
68 #define ST_MAGN_0_FS_AVL_4000_VAL 0x04
69 #define ST_MAGN_0_FS_AVL_4700_VAL 0x05
70 #define ST_MAGN_0_FS_AVL_5600_VAL 0x06
71 #define ST_MAGN_0_FS_AVL_8100_VAL 0x07
72 #define ST_MAGN_0_FS_AVL_1300_GAIN_XY 1100
73 #define ST_MAGN_0_FS_AVL_1900_GAIN_XY 855
74 #define ST_MAGN_0_FS_AVL_2500_GAIN_XY 670
75 #define ST_MAGN_0_FS_AVL_4000_GAIN_XY 450
76 #define ST_MAGN_0_FS_AVL_4700_GAIN_XY 400
77 #define ST_MAGN_0_FS_AVL_5600_GAIN_XY 330
78 #define ST_MAGN_0_FS_AVL_8100_GAIN_XY 230
79 #define ST_MAGN_0_FS_AVL_1300_GAIN_Z 980
80 #define ST_MAGN_0_FS_AVL_1900_GAIN_Z 760
81 #define ST_MAGN_0_FS_AVL_2500_GAIN_Z 600
82 #define ST_MAGN_0_FS_AVL_4000_GAIN_Z 400
83 #define ST_MAGN_0_FS_AVL_4700_GAIN_Z 355
84 #define ST_MAGN_0_FS_AVL_5600_GAIN_Z 295
85 #define ST_MAGN_0_FS_AVL_8100_GAIN_Z 205
86 #define ST_MAGN_0_MULTIREAD_BIT false
88 /* CUSTOM VALUES FOR SENSOR 1 */
89 #define ST_MAGN_1_WAI_EXP 0x3c
90 #define ST_MAGN_1_ODR_ADDR 0x00
91 #define ST_MAGN_1_ODR_MASK 0x1c
92 #define ST_MAGN_1_ODR_AVL_1HZ_VAL 0x00
93 #define ST_MAGN_1_ODR_AVL_2HZ_VAL 0x01
94 #define ST_MAGN_1_ODR_AVL_3HZ_VAL 0x02
95 #define ST_MAGN_1_ODR_AVL_8HZ_VAL 0x03
96 #define ST_MAGN_1_ODR_AVL_15HZ_VAL 0x04
97 #define ST_MAGN_1_ODR_AVL_30HZ_VAL 0x05
98 #define ST_MAGN_1_ODR_AVL_75HZ_VAL 0x06
99 #define ST_MAGN_1_ODR_AVL_220HZ_VAL 0x07
100 #define ST_MAGN_1_PW_ADDR 0x02
101 #define ST_MAGN_1_PW_MASK 0x03
102 #define ST_MAGN_1_PW_ON 0x00
103 #define ST_MAGN_1_PW_OFF 0x03
104 #define ST_MAGN_1_FS_ADDR 0x01
105 #define ST_MAGN_1_FS_MASK 0xe0
106 #define ST_MAGN_1_FS_AVL_1300_VAL 0x01
107 #define ST_MAGN_1_FS_AVL_1900_VAL 0x02
108 #define ST_MAGN_1_FS_AVL_2500_VAL 0x03
109 #define ST_MAGN_1_FS_AVL_4000_VAL 0x04
110 #define ST_MAGN_1_FS_AVL_4700_VAL 0x05
111 #define ST_MAGN_1_FS_AVL_5600_VAL 0x06
112 #define ST_MAGN_1_FS_AVL_8100_VAL 0x07
113 #define ST_MAGN_1_FS_AVL_1300_GAIN_XY 909
114 #define ST_MAGN_1_FS_AVL_1900_GAIN_XY 1169
115 #define ST_MAGN_1_FS_AVL_2500_GAIN_XY 1492
116 #define ST_MAGN_1_FS_AVL_4000_GAIN_XY 2222
117 #define ST_MAGN_1_FS_AVL_4700_GAIN_XY 2500
118 #define ST_MAGN_1_FS_AVL_5600_GAIN_XY 3030
119 #define ST_MAGN_1_FS_AVL_8100_GAIN_XY 4347
120 #define ST_MAGN_1_FS_AVL_1300_GAIN_Z 1020
121 #define ST_MAGN_1_FS_AVL_1900_GAIN_Z 1315
122 #define ST_MAGN_1_FS_AVL_2500_GAIN_Z 1666
123 #define ST_MAGN_1_FS_AVL_4000_GAIN_Z 2500
124 #define ST_MAGN_1_FS_AVL_4700_GAIN_Z 2816
125 #define ST_MAGN_1_FS_AVL_5600_GAIN_Z 3389
126 #define ST_MAGN_1_FS_AVL_8100_GAIN_Z 4878
127 #define ST_MAGN_1_MULTIREAD_BIT false
129 /* CUSTOM VALUES FOR SENSOR 2 */
130 #define ST_MAGN_2_WAI_EXP 0x3d
131 #define ST_MAGN_2_ODR_ADDR 0x20
132 #define ST_MAGN_2_ODR_MASK 0x1c
133 #define ST_MAGN_2_ODR_AVL_1HZ_VAL 0x00
134 #define ST_MAGN_2_ODR_AVL_2HZ_VAL 0x01
135 #define ST_MAGN_2_ODR_AVL_3HZ_VAL 0x02
136 #define ST_MAGN_2_ODR_AVL_5HZ_VAL 0x03
137 #define ST_MAGN_2_ODR_AVL_10HZ_VAL 0x04
138 #define ST_MAGN_2_ODR_AVL_20HZ_VAL 0x05
139 #define ST_MAGN_2_ODR_AVL_40HZ_VAL 0x06
140 #define ST_MAGN_2_ODR_AVL_80HZ_VAL 0x07
141 #define ST_MAGN_2_PW_ADDR 0x22
142 #define ST_MAGN_2_PW_MASK 0x03
143 #define ST_MAGN_2_PW_ON 0x00
144 #define ST_MAGN_2_PW_OFF 0x03
145 #define ST_MAGN_2_FS_ADDR 0x21
146 #define ST_MAGN_2_FS_MASK 0x60
147 #define ST_MAGN_2_FS_AVL_4000_VAL 0x00
148 #define ST_MAGN_2_FS_AVL_8000_VAL 0x01
149 #define ST_MAGN_2_FS_AVL_12000_VAL 0x02
150 #define ST_MAGN_2_FS_AVL_16000_VAL 0x03
151 #define ST_MAGN_2_FS_AVL_4000_GAIN 146
152 #define ST_MAGN_2_FS_AVL_8000_GAIN 292
153 #define ST_MAGN_2_FS_AVL_12000_GAIN 438
154 #define ST_MAGN_2_FS_AVL_16000_GAIN 584
155 #define ST_MAGN_2_MULTIREAD_BIT false
156 #define ST_MAGN_2_OUT_X_L_ADDR 0x28
157 #define ST_MAGN_2_OUT_Y_L_ADDR 0x2a
158 #define ST_MAGN_2_OUT_Z_L_ADDR 0x2c
160 static const struct iio_chan_spec st_magn_16bit_channels[] = {
161 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
162 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
163 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_BE, 16, 16,
164 ST_MAGN_DEFAULT_OUT_X_H_ADDR),
165 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
166 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
167 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_BE, 16, 16,
168 ST_MAGN_DEFAULT_OUT_Y_H_ADDR),
169 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
170 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
171 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_BE, 16, 16,
172 ST_MAGN_DEFAULT_OUT_Z_H_ADDR),
173 IIO_CHAN_SOFT_TIMESTAMP(3)
176 static const struct iio_chan_spec st_magn_2_16bit_channels[] = {
177 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
178 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
179 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
180 ST_MAGN_2_OUT_X_L_ADDR),
181 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
182 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
183 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
184 ST_MAGN_2_OUT_Y_L_ADDR),
185 ST_SENSORS_LSM_CHANNELS(IIO_MAGN,
186 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
187 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
188 ST_MAGN_2_OUT_Z_L_ADDR),
189 IIO_CHAN_SOFT_TIMESTAMP(3)
192 static const struct st_sensor_settings st_magn_sensors_settings[] = {
194 .wai = 0, /* This sensor has no valid WhoAmI report 0 */
195 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
196 .sensors_supported = {
197 [0] = LSM303DLH_MAGN_DEV_NAME,
199 .ch = (struct iio_chan_spec *)st_magn_16bit_channels,
201 .addr = ST_MAGN_0_ODR_ADDR,
202 .mask = ST_MAGN_0_ODR_MASK,
204 { 1, ST_MAGN_0_ODR_AVL_1HZ_VAL, },
205 { 2, ST_MAGN_0_ODR_AVL_2HZ_VAL, },
206 { 3, ST_MAGN_0_ODR_AVL_3HZ_VAL, },
207 { 8, ST_MAGN_0_ODR_AVL_8HZ_VAL, },
208 { 15, ST_MAGN_0_ODR_AVL_15HZ_VAL, },
209 { 30, ST_MAGN_0_ODR_AVL_30HZ_VAL, },
210 { 75, ST_MAGN_0_ODR_AVL_75HZ_VAL, },
214 .addr = ST_MAGN_0_PW_ADDR,
215 .mask = ST_MAGN_0_PW_MASK,
216 .value_on = ST_MAGN_0_PW_ON,
217 .value_off = ST_MAGN_0_PW_OFF,
220 .addr = ST_MAGN_0_FS_ADDR,
221 .mask = ST_MAGN_0_FS_MASK,
224 .num = ST_MAGN_FS_AVL_1300MG,
225 .value = ST_MAGN_0_FS_AVL_1300_VAL,
226 .gain = ST_MAGN_0_FS_AVL_1300_GAIN_XY,
227 .gain2 = ST_MAGN_0_FS_AVL_1300_GAIN_Z,
230 .num = ST_MAGN_FS_AVL_1900MG,
231 .value = ST_MAGN_0_FS_AVL_1900_VAL,
232 .gain = ST_MAGN_0_FS_AVL_1900_GAIN_XY,
233 .gain2 = ST_MAGN_0_FS_AVL_1900_GAIN_Z,
236 .num = ST_MAGN_FS_AVL_2500MG,
237 .value = ST_MAGN_0_FS_AVL_2500_VAL,
238 .gain = ST_MAGN_0_FS_AVL_2500_GAIN_XY,
239 .gain2 = ST_MAGN_0_FS_AVL_2500_GAIN_Z,
242 .num = ST_MAGN_FS_AVL_4000MG,
243 .value = ST_MAGN_0_FS_AVL_4000_VAL,
244 .gain = ST_MAGN_0_FS_AVL_4000_GAIN_XY,
245 .gain2 = ST_MAGN_0_FS_AVL_4000_GAIN_Z,
248 .num = ST_MAGN_FS_AVL_4700MG,
249 .value = ST_MAGN_0_FS_AVL_4700_VAL,
250 .gain = ST_MAGN_0_FS_AVL_4700_GAIN_XY,
251 .gain2 = ST_MAGN_0_FS_AVL_4700_GAIN_Z,
254 .num = ST_MAGN_FS_AVL_5600MG,
255 .value = ST_MAGN_0_FS_AVL_5600_VAL,
256 .gain = ST_MAGN_0_FS_AVL_5600_GAIN_XY,
257 .gain2 = ST_MAGN_0_FS_AVL_5600_GAIN_Z,
260 .num = ST_MAGN_FS_AVL_8100MG,
261 .value = ST_MAGN_0_FS_AVL_8100_VAL,
262 .gain = ST_MAGN_0_FS_AVL_8100_GAIN_XY,
263 .gain2 = ST_MAGN_0_FS_AVL_8100_GAIN_Z,
267 .multi_read_bit = ST_MAGN_0_MULTIREAD_BIT,
271 .wai = ST_MAGN_1_WAI_EXP,
272 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
273 .sensors_supported = {
274 [0] = LSM303DLHC_MAGN_DEV_NAME,
275 [1] = LSM303DLM_MAGN_DEV_NAME,
277 .ch = (struct iio_chan_spec *)st_magn_16bit_channels,
279 .addr = ST_MAGN_1_ODR_ADDR,
280 .mask = ST_MAGN_1_ODR_MASK,
282 { 1, ST_MAGN_1_ODR_AVL_1HZ_VAL, },
283 { 2, ST_MAGN_1_ODR_AVL_2HZ_VAL, },
284 { 3, ST_MAGN_1_ODR_AVL_3HZ_VAL, },
285 { 8, ST_MAGN_1_ODR_AVL_8HZ_VAL, },
286 { 15, ST_MAGN_1_ODR_AVL_15HZ_VAL, },
287 { 30, ST_MAGN_1_ODR_AVL_30HZ_VAL, },
288 { 75, ST_MAGN_1_ODR_AVL_75HZ_VAL, },
289 { 220, ST_MAGN_1_ODR_AVL_220HZ_VAL, },
293 .addr = ST_MAGN_1_PW_ADDR,
294 .mask = ST_MAGN_1_PW_MASK,
295 .value_on = ST_MAGN_1_PW_ON,
296 .value_off = ST_MAGN_1_PW_OFF,
299 .addr = ST_MAGN_1_FS_ADDR,
300 .mask = ST_MAGN_1_FS_MASK,
303 .num = ST_MAGN_FS_AVL_1300MG,
304 .value = ST_MAGN_1_FS_AVL_1300_VAL,
305 .gain = ST_MAGN_1_FS_AVL_1300_GAIN_XY,
306 .gain2 = ST_MAGN_1_FS_AVL_1300_GAIN_Z,
309 .num = ST_MAGN_FS_AVL_1900MG,
310 .value = ST_MAGN_1_FS_AVL_1900_VAL,
311 .gain = ST_MAGN_1_FS_AVL_1900_GAIN_XY,
312 .gain2 = ST_MAGN_1_FS_AVL_1900_GAIN_Z,
315 .num = ST_MAGN_FS_AVL_2500MG,
316 .value = ST_MAGN_1_FS_AVL_2500_VAL,
317 .gain = ST_MAGN_1_FS_AVL_2500_GAIN_XY,
318 .gain2 = ST_MAGN_1_FS_AVL_2500_GAIN_Z,
321 .num = ST_MAGN_FS_AVL_4000MG,
322 .value = ST_MAGN_1_FS_AVL_4000_VAL,
323 .gain = ST_MAGN_1_FS_AVL_4000_GAIN_XY,
324 .gain2 = ST_MAGN_1_FS_AVL_4000_GAIN_Z,
327 .num = ST_MAGN_FS_AVL_4700MG,
328 .value = ST_MAGN_1_FS_AVL_4700_VAL,
329 .gain = ST_MAGN_1_FS_AVL_4700_GAIN_XY,
330 .gain2 = ST_MAGN_1_FS_AVL_4700_GAIN_Z,
333 .num = ST_MAGN_FS_AVL_5600MG,
334 .value = ST_MAGN_1_FS_AVL_5600_VAL,
335 .gain = ST_MAGN_1_FS_AVL_5600_GAIN_XY,
336 .gain2 = ST_MAGN_1_FS_AVL_5600_GAIN_Z,
339 .num = ST_MAGN_FS_AVL_8100MG,
340 .value = ST_MAGN_1_FS_AVL_8100_VAL,
341 .gain = ST_MAGN_1_FS_AVL_8100_GAIN_XY,
342 .gain2 = ST_MAGN_1_FS_AVL_8100_GAIN_Z,
346 .multi_read_bit = ST_MAGN_1_MULTIREAD_BIT,
350 .wai = ST_MAGN_2_WAI_EXP,
351 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
352 .sensors_supported = {
353 [0] = LIS3MDL_MAGN_DEV_NAME,
355 .ch = (struct iio_chan_spec *)st_magn_2_16bit_channels,
357 .addr = ST_MAGN_2_ODR_ADDR,
358 .mask = ST_MAGN_2_ODR_MASK,
360 { 1, ST_MAGN_2_ODR_AVL_1HZ_VAL, },
361 { 2, ST_MAGN_2_ODR_AVL_2HZ_VAL, },
362 { 3, ST_MAGN_2_ODR_AVL_3HZ_VAL, },
363 { 5, ST_MAGN_2_ODR_AVL_5HZ_VAL, },
364 { 10, ST_MAGN_2_ODR_AVL_10HZ_VAL, },
365 { 20, ST_MAGN_2_ODR_AVL_20HZ_VAL, },
366 { 40, ST_MAGN_2_ODR_AVL_40HZ_VAL, },
367 { 80, ST_MAGN_2_ODR_AVL_80HZ_VAL, },
371 .addr = ST_MAGN_2_PW_ADDR,
372 .mask = ST_MAGN_2_PW_MASK,
373 .value_on = ST_MAGN_2_PW_ON,
374 .value_off = ST_MAGN_2_PW_OFF,
377 .addr = ST_MAGN_2_FS_ADDR,
378 .mask = ST_MAGN_2_FS_MASK,
381 .num = ST_MAGN_FS_AVL_4000MG,
382 .value = ST_MAGN_2_FS_AVL_4000_VAL,
383 .gain = ST_MAGN_2_FS_AVL_4000_GAIN,
386 .num = ST_MAGN_FS_AVL_8000MG,
387 .value = ST_MAGN_2_FS_AVL_8000_VAL,
388 .gain = ST_MAGN_2_FS_AVL_8000_GAIN,
391 .num = ST_MAGN_FS_AVL_12000MG,
392 .value = ST_MAGN_2_FS_AVL_12000_VAL,
393 .gain = ST_MAGN_2_FS_AVL_12000_GAIN,
396 .num = ST_MAGN_FS_AVL_16000MG,
397 .value = ST_MAGN_2_FS_AVL_16000_VAL,
398 .gain = ST_MAGN_2_FS_AVL_16000_GAIN,
402 .multi_read_bit = ST_MAGN_2_MULTIREAD_BIT,
407 static int st_magn_read_raw(struct iio_dev *indio_dev,
408 struct iio_chan_spec const *ch, int *val,
409 int *val2, long mask)
412 struct st_sensor_data *mdata = iio_priv(indio_dev);
415 case IIO_CHAN_INFO_RAW:
416 err = st_sensors_read_info_raw(indio_dev, ch, val);
421 case IIO_CHAN_INFO_SCALE:
423 if ((ch->scan_index == ST_SENSORS_SCAN_Z) &&
424 (mdata->current_fullscale->gain2 != 0))
425 *val2 = mdata->current_fullscale->gain2;
427 *val2 = mdata->current_fullscale->gain;
428 return IIO_VAL_INT_PLUS_MICRO;
429 case IIO_CHAN_INFO_SAMP_FREQ:
440 static int st_magn_write_raw(struct iio_dev *indio_dev,
441 struct iio_chan_spec const *chan, int val, int val2, long mask)
446 case IIO_CHAN_INFO_SCALE:
447 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
449 case IIO_CHAN_INFO_SAMP_FREQ:
452 mutex_lock(&indio_dev->mlock);
453 err = st_sensors_set_odr(indio_dev, val);
454 mutex_unlock(&indio_dev->mlock);
463 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
464 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_magn_scale_available);
466 static struct attribute *st_magn_attributes[] = {
467 &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
468 &iio_dev_attr_in_magn_scale_available.dev_attr.attr,
472 static const struct attribute_group st_magn_attribute_group = {
473 .attrs = st_magn_attributes,
476 static const struct iio_info magn_info = {
477 .driver_module = THIS_MODULE,
478 .attrs = &st_magn_attribute_group,
479 .read_raw = &st_magn_read_raw,
480 .write_raw = &st_magn_write_raw,
483 #ifdef CONFIG_IIO_TRIGGER
484 static const struct iio_trigger_ops st_magn_trigger_ops = {
485 .owner = THIS_MODULE,
486 .set_trigger_state = ST_MAGN_TRIGGER_SET_STATE,
488 #define ST_MAGN_TRIGGER_OPS (&st_magn_trigger_ops)
490 #define ST_MAGN_TRIGGER_OPS NULL
493 int st_magn_common_probe(struct iio_dev *indio_dev)
495 struct st_sensor_data *mdata = iio_priv(indio_dev);
496 int irq = mdata->get_irq_data_ready(indio_dev);
499 indio_dev->modes = INDIO_DIRECT_MODE;
500 indio_dev->info = &magn_info;
501 mutex_init(&mdata->tb.buf_lock);
503 st_sensors_power_enable(indio_dev);
505 err = st_sensors_check_device_support(indio_dev,
506 ARRAY_SIZE(st_magn_sensors_settings),
507 st_magn_sensors_settings);
511 mdata->num_data_channels = ST_MAGN_NUMBER_DATA_CHANNELS;
512 mdata->multiread_bit = mdata->sensor_settings->multi_read_bit;
513 indio_dev->channels = mdata->sensor_settings->ch;
514 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
516 mdata->current_fullscale = (struct st_sensor_fullscale_avl *)
517 &mdata->sensor_settings->fs.fs_avl[0];
518 mdata->odr = mdata->sensor_settings->odr.odr_avl[0].hz;
520 err = st_sensors_init_sensor(indio_dev, NULL);
524 err = st_magn_allocate_ring(indio_dev);
529 err = st_sensors_allocate_trigger(indio_dev,
530 ST_MAGN_TRIGGER_OPS);
532 goto st_magn_probe_trigger_error;
535 err = iio_device_register(indio_dev);
537 goto st_magn_device_register_error;
539 dev_info(&indio_dev->dev, "registered magnetometer %s\n",
544 st_magn_device_register_error:
546 st_sensors_deallocate_trigger(indio_dev);
547 st_magn_probe_trigger_error:
548 st_magn_deallocate_ring(indio_dev);
552 EXPORT_SYMBOL(st_magn_common_probe);
554 void st_magn_common_remove(struct iio_dev *indio_dev)
556 struct st_sensor_data *mdata = iio_priv(indio_dev);
558 st_sensors_power_disable(indio_dev);
560 iio_device_unregister(indio_dev);
561 if (mdata->get_irq_data_ready(indio_dev) > 0)
562 st_sensors_deallocate_trigger(indio_dev);
564 st_magn_deallocate_ring(indio_dev);
566 EXPORT_SYMBOL(st_magn_common_remove);
568 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
569 MODULE_DESCRIPTION("STMicroelectronics magnetometers driver");
570 MODULE_LICENSE("GPL v2");