2 * STMicroelectronics accelerometers 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/iio/iio.h>
22 #include <linux/iio/sysfs.h>
23 #include <linux/iio/trigger.h>
24 #include <linux/iio/buffer.h>
26 #include <linux/iio/common/st_sensors.h>
29 #define ST_ACCEL_NUMBER_DATA_CHANNELS 3
31 /* DEFAULT VALUE FOR SENSORS */
32 #define ST_ACCEL_DEFAULT_OUT_X_L_ADDR 0x28
33 #define ST_ACCEL_DEFAULT_OUT_Y_L_ADDR 0x2a
34 #define ST_ACCEL_DEFAULT_OUT_Z_L_ADDR 0x2c
37 #define ST_ACCEL_FS_AVL_2G 2
38 #define ST_ACCEL_FS_AVL_4G 4
39 #define ST_ACCEL_FS_AVL_6G 6
40 #define ST_ACCEL_FS_AVL_8G 8
41 #define ST_ACCEL_FS_AVL_16G 16
43 /* CUSTOM VALUES FOR SENSOR 1 */
44 #define ST_ACCEL_1_WAI_EXP 0x33
45 #define ST_ACCEL_1_ODR_ADDR 0x20
46 #define ST_ACCEL_1_ODR_MASK 0xf0
47 #define ST_ACCEL_1_ODR_AVL_1HZ_VAL 0x01
48 #define ST_ACCEL_1_ODR_AVL_10HZ_VAL 0x02
49 #define ST_ACCEL_1_ODR_AVL_25HZ_VAL 0x03
50 #define ST_ACCEL_1_ODR_AVL_50HZ_VAL 0x04
51 #define ST_ACCEL_1_ODR_AVL_100HZ_VAL 0x05
52 #define ST_ACCEL_1_ODR_AVL_200HZ_VAL 0x06
53 #define ST_ACCEL_1_ODR_AVL_400HZ_VAL 0x07
54 #define ST_ACCEL_1_ODR_AVL_1600HZ_VAL 0x08
55 #define ST_ACCEL_1_FS_ADDR 0x23
56 #define ST_ACCEL_1_FS_MASK 0x30
57 #define ST_ACCEL_1_FS_AVL_2_VAL 0x00
58 #define ST_ACCEL_1_FS_AVL_4_VAL 0x01
59 #define ST_ACCEL_1_FS_AVL_8_VAL 0x02
60 #define ST_ACCEL_1_FS_AVL_16_VAL 0x03
61 #define ST_ACCEL_1_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
62 #define ST_ACCEL_1_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
63 #define ST_ACCEL_1_FS_AVL_8_GAIN IIO_G_TO_M_S_2(4000)
64 #define ST_ACCEL_1_FS_AVL_16_GAIN IIO_G_TO_M_S_2(12000)
65 #define ST_ACCEL_1_BDU_ADDR 0x23
66 #define ST_ACCEL_1_BDU_MASK 0x80
67 #define ST_ACCEL_1_DRDY_IRQ_ADDR 0x22
68 #define ST_ACCEL_1_DRDY_IRQ_INT1_MASK 0x10
69 #define ST_ACCEL_1_DRDY_IRQ_INT2_MASK 0x08
70 #define ST_ACCEL_1_MULTIREAD_BIT true
72 /* CUSTOM VALUES FOR SENSOR 2 */
73 #define ST_ACCEL_2_WAI_EXP 0x32
74 #define ST_ACCEL_2_ODR_ADDR 0x20
75 #define ST_ACCEL_2_ODR_MASK 0x18
76 #define ST_ACCEL_2_ODR_AVL_50HZ_VAL 0x00
77 #define ST_ACCEL_2_ODR_AVL_100HZ_VAL 0x01
78 #define ST_ACCEL_2_ODR_AVL_400HZ_VAL 0x02
79 #define ST_ACCEL_2_ODR_AVL_1000HZ_VAL 0x03
80 #define ST_ACCEL_2_PW_ADDR 0x20
81 #define ST_ACCEL_2_PW_MASK 0xe0
82 #define ST_ACCEL_2_FS_ADDR 0x23
83 #define ST_ACCEL_2_FS_MASK 0x30
84 #define ST_ACCEL_2_FS_AVL_2_VAL 0X00
85 #define ST_ACCEL_2_FS_AVL_4_VAL 0X01
86 #define ST_ACCEL_2_FS_AVL_8_VAL 0x03
87 #define ST_ACCEL_2_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
88 #define ST_ACCEL_2_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
89 #define ST_ACCEL_2_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900)
90 #define ST_ACCEL_2_BDU_ADDR 0x23
91 #define ST_ACCEL_2_BDU_MASK 0x80
92 #define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22
93 #define ST_ACCEL_2_DRDY_IRQ_INT1_MASK 0x02
94 #define ST_ACCEL_2_DRDY_IRQ_INT2_MASK 0x10
95 #define ST_ACCEL_2_MULTIREAD_BIT true
97 /* CUSTOM VALUES FOR SENSOR 3 */
98 #define ST_ACCEL_3_WAI_EXP 0x40
99 #define ST_ACCEL_3_ODR_ADDR 0x20
100 #define ST_ACCEL_3_ODR_MASK 0xf0
101 #define ST_ACCEL_3_ODR_AVL_3HZ_VAL 0x01
102 #define ST_ACCEL_3_ODR_AVL_6HZ_VAL 0x02
103 #define ST_ACCEL_3_ODR_AVL_12HZ_VAL 0x03
104 #define ST_ACCEL_3_ODR_AVL_25HZ_VAL 0x04
105 #define ST_ACCEL_3_ODR_AVL_50HZ_VAL 0x05
106 #define ST_ACCEL_3_ODR_AVL_100HZ_VAL 0x06
107 #define ST_ACCEL_3_ODR_AVL_200HZ_VAL 0x07
108 #define ST_ACCEL_3_ODR_AVL_400HZ_VAL 0x08
109 #define ST_ACCEL_3_ODR_AVL_800HZ_VAL 0x09
110 #define ST_ACCEL_3_ODR_AVL_1600HZ_VAL 0x0a
111 #define ST_ACCEL_3_FS_ADDR 0x24
112 #define ST_ACCEL_3_FS_MASK 0x38
113 #define ST_ACCEL_3_FS_AVL_2_VAL 0X00
114 #define ST_ACCEL_3_FS_AVL_4_VAL 0X01
115 #define ST_ACCEL_3_FS_AVL_6_VAL 0x02
116 #define ST_ACCEL_3_FS_AVL_8_VAL 0x03
117 #define ST_ACCEL_3_FS_AVL_16_VAL 0x04
118 #define ST_ACCEL_3_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61)
119 #define ST_ACCEL_3_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122)
120 #define ST_ACCEL_3_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183)
121 #define ST_ACCEL_3_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244)
122 #define ST_ACCEL_3_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732)
123 #define ST_ACCEL_3_BDU_ADDR 0x20
124 #define ST_ACCEL_3_BDU_MASK 0x08
125 #define ST_ACCEL_3_DRDY_IRQ_ADDR 0x23
126 #define ST_ACCEL_3_DRDY_IRQ_INT1_MASK 0x80
127 #define ST_ACCEL_3_DRDY_IRQ_INT2_MASK 0x00
128 #define ST_ACCEL_3_IG1_EN_ADDR 0x23
129 #define ST_ACCEL_3_IG1_EN_MASK 0x08
130 #define ST_ACCEL_3_MULTIREAD_BIT false
132 /* CUSTOM VALUES FOR SENSOR 4 */
133 #define ST_ACCEL_4_WAI_EXP 0x3a
134 #define ST_ACCEL_4_ODR_ADDR 0x20
135 #define ST_ACCEL_4_ODR_MASK 0x30 /* DF1 and DF0 */
136 #define ST_ACCEL_4_ODR_AVL_40HZ_VAL 0x00
137 #define ST_ACCEL_4_ODR_AVL_160HZ_VAL 0x01
138 #define ST_ACCEL_4_ODR_AVL_640HZ_VAL 0x02
139 #define ST_ACCEL_4_ODR_AVL_2560HZ_VAL 0x03
140 #define ST_ACCEL_4_PW_ADDR 0x20
141 #define ST_ACCEL_4_PW_MASK 0xc0
142 #define ST_ACCEL_4_FS_ADDR 0x21
143 #define ST_ACCEL_4_FS_MASK 0x80
144 #define ST_ACCEL_4_FS_AVL_2_VAL 0X00
145 #define ST_ACCEL_4_FS_AVL_6_VAL 0X01
146 #define ST_ACCEL_4_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1024)
147 #define ST_ACCEL_4_FS_AVL_6_GAIN IIO_G_TO_M_S_2(340)
148 #define ST_ACCEL_4_BDU_ADDR 0x21
149 #define ST_ACCEL_4_BDU_MASK 0x40
150 #define ST_ACCEL_4_DRDY_IRQ_ADDR 0x21
151 #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK 0x04
152 #define ST_ACCEL_4_IG1_EN_ADDR 0x21
153 #define ST_ACCEL_4_IG1_EN_MASK 0x08
154 #define ST_ACCEL_4_MULTIREAD_BIT true
156 static const struct iio_chan_spec st_accel_12bit_channels[] = {
157 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
158 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
159 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16,
160 ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
161 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
162 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
163 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16,
164 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
165 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
166 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
167 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16,
168 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
169 IIO_CHAN_SOFT_TIMESTAMP(3)
172 static const struct iio_chan_spec st_accel_16bit_channels[] = {
173 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
174 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
175 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
176 ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
177 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
178 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
179 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
180 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
181 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
182 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
183 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
184 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
185 IIO_CHAN_SOFT_TIMESTAMP(3)
188 static const struct st_sensor_settings st_accel_sensors_settings[] = {
190 .wai = ST_ACCEL_1_WAI_EXP,
191 .sensors_supported = {
192 [0] = LIS3DH_ACCEL_DEV_NAME,
193 [1] = LSM303DLHC_ACCEL_DEV_NAME,
194 [2] = LSM330D_ACCEL_DEV_NAME,
195 [3] = LSM330DL_ACCEL_DEV_NAME,
196 [4] = LSM330DLC_ACCEL_DEV_NAME,
198 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
200 .addr = ST_ACCEL_1_ODR_ADDR,
201 .mask = ST_ACCEL_1_ODR_MASK,
203 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
204 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
205 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
206 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
207 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
208 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
209 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
210 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
214 .addr = ST_ACCEL_1_ODR_ADDR,
215 .mask = ST_ACCEL_1_ODR_MASK,
216 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
219 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
220 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
223 .addr = ST_ACCEL_1_FS_ADDR,
224 .mask = ST_ACCEL_1_FS_MASK,
227 .num = ST_ACCEL_FS_AVL_2G,
228 .value = ST_ACCEL_1_FS_AVL_2_VAL,
229 .gain = ST_ACCEL_1_FS_AVL_2_GAIN,
232 .num = ST_ACCEL_FS_AVL_4G,
233 .value = ST_ACCEL_1_FS_AVL_4_VAL,
234 .gain = ST_ACCEL_1_FS_AVL_4_GAIN,
237 .num = ST_ACCEL_FS_AVL_8G,
238 .value = ST_ACCEL_1_FS_AVL_8_VAL,
239 .gain = ST_ACCEL_1_FS_AVL_8_GAIN,
242 .num = ST_ACCEL_FS_AVL_16G,
243 .value = ST_ACCEL_1_FS_AVL_16_VAL,
244 .gain = ST_ACCEL_1_FS_AVL_16_GAIN,
249 .addr = ST_ACCEL_1_BDU_ADDR,
250 .mask = ST_ACCEL_1_BDU_MASK,
253 .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
254 .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
255 .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
257 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
261 .wai = ST_ACCEL_2_WAI_EXP,
262 .sensors_supported = {
263 [0] = LIS331DLH_ACCEL_DEV_NAME,
264 [1] = LSM303DL_ACCEL_DEV_NAME,
265 [2] = LSM303DLH_ACCEL_DEV_NAME,
266 [3] = LSM303DLM_ACCEL_DEV_NAME,
268 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
270 .addr = ST_ACCEL_2_ODR_ADDR,
271 .mask = ST_ACCEL_2_ODR_MASK,
273 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
274 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
275 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
276 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
280 .addr = ST_ACCEL_2_PW_ADDR,
281 .mask = ST_ACCEL_2_PW_MASK,
282 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
283 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
286 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
287 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
290 .addr = ST_ACCEL_2_FS_ADDR,
291 .mask = ST_ACCEL_2_FS_MASK,
294 .num = ST_ACCEL_FS_AVL_2G,
295 .value = ST_ACCEL_2_FS_AVL_2_VAL,
296 .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
299 .num = ST_ACCEL_FS_AVL_4G,
300 .value = ST_ACCEL_2_FS_AVL_4_VAL,
301 .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
304 .num = ST_ACCEL_FS_AVL_8G,
305 .value = ST_ACCEL_2_FS_AVL_8_VAL,
306 .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
311 .addr = ST_ACCEL_2_BDU_ADDR,
312 .mask = ST_ACCEL_2_BDU_MASK,
315 .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
316 .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
317 .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
319 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
323 .wai = ST_ACCEL_3_WAI_EXP,
324 .sensors_supported = {
325 [0] = LSM330_ACCEL_DEV_NAME,
327 .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
329 .addr = ST_ACCEL_3_ODR_ADDR,
330 .mask = ST_ACCEL_3_ODR_MASK,
332 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
333 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
334 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
335 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
336 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
337 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
338 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
339 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
340 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
341 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
345 .addr = ST_ACCEL_3_ODR_ADDR,
346 .mask = ST_ACCEL_3_ODR_MASK,
347 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
350 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
351 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
354 .addr = ST_ACCEL_3_FS_ADDR,
355 .mask = ST_ACCEL_3_FS_MASK,
358 .num = ST_ACCEL_FS_AVL_2G,
359 .value = ST_ACCEL_3_FS_AVL_2_VAL,
360 .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
363 .num = ST_ACCEL_FS_AVL_4G,
364 .value = ST_ACCEL_3_FS_AVL_4_VAL,
365 .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
368 .num = ST_ACCEL_FS_AVL_6G,
369 .value = ST_ACCEL_3_FS_AVL_6_VAL,
370 .gain = ST_ACCEL_3_FS_AVL_6_GAIN,
373 .num = ST_ACCEL_FS_AVL_8G,
374 .value = ST_ACCEL_3_FS_AVL_8_VAL,
375 .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
378 .num = ST_ACCEL_FS_AVL_16G,
379 .value = ST_ACCEL_3_FS_AVL_16_VAL,
380 .gain = ST_ACCEL_3_FS_AVL_16_GAIN,
385 .addr = ST_ACCEL_3_BDU_ADDR,
386 .mask = ST_ACCEL_3_BDU_MASK,
389 .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
390 .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
391 .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
393 .en_addr = ST_ACCEL_3_IG1_EN_ADDR,
394 .en_mask = ST_ACCEL_3_IG1_EN_MASK,
397 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
401 .wai = ST_ACCEL_4_WAI_EXP,
402 .sensors_supported = {
403 [0] = LIS3LV02DL_ACCEL_DEV_NAME,
405 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
407 .addr = ST_ACCEL_4_ODR_ADDR,
408 .mask = ST_ACCEL_4_ODR_MASK,
410 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
411 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
412 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
413 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
417 .addr = ST_ACCEL_4_PW_ADDR,
418 .mask = ST_ACCEL_4_PW_MASK,
419 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
420 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
423 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
424 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
427 .addr = ST_ACCEL_4_FS_ADDR,
428 .mask = ST_ACCEL_4_FS_MASK,
431 .num = ST_ACCEL_FS_AVL_2G,
432 .value = ST_ACCEL_4_FS_AVL_2_VAL,
433 .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
436 .num = ST_ACCEL_FS_AVL_6G,
437 .value = ST_ACCEL_4_FS_AVL_6_VAL,
438 .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
443 .addr = ST_ACCEL_4_BDU_ADDR,
444 .mask = ST_ACCEL_4_BDU_MASK,
447 .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
448 .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
450 .en_addr = ST_ACCEL_4_IG1_EN_ADDR,
451 .en_mask = ST_ACCEL_4_IG1_EN_MASK,
454 .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
455 .bootime = 2, /* guess */
459 static int st_accel_read_raw(struct iio_dev *indio_dev,
460 struct iio_chan_spec const *ch, int *val,
461 int *val2, long mask)
464 struct st_sensor_data *adata = iio_priv(indio_dev);
467 case IIO_CHAN_INFO_RAW:
468 err = st_sensors_read_info_raw(indio_dev, ch, val);
473 case IIO_CHAN_INFO_SCALE:
475 *val2 = adata->current_fullscale->gain;
476 return IIO_VAL_INT_PLUS_MICRO;
477 case IIO_CHAN_INFO_SAMP_FREQ:
488 static int st_accel_write_raw(struct iio_dev *indio_dev,
489 struct iio_chan_spec const *chan, int val, int val2, long mask)
494 case IIO_CHAN_INFO_SCALE:
495 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
497 case IIO_CHAN_INFO_SAMP_FREQ:
500 mutex_lock(&indio_dev->mlock);
501 err = st_sensors_set_odr(indio_dev, val);
502 mutex_unlock(&indio_dev->mlock);
511 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
512 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
514 static struct attribute *st_accel_attributes[] = {
515 &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
516 &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
520 static const struct attribute_group st_accel_attribute_group = {
521 .attrs = st_accel_attributes,
524 static const struct iio_info accel_info = {
525 .driver_module = THIS_MODULE,
526 .attrs = &st_accel_attribute_group,
527 .read_raw = &st_accel_read_raw,
528 .write_raw = &st_accel_write_raw,
531 #ifdef CONFIG_IIO_TRIGGER
532 static const struct iio_trigger_ops st_accel_trigger_ops = {
533 .owner = THIS_MODULE,
534 .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
536 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
538 #define ST_ACCEL_TRIGGER_OPS NULL
541 int st_accel_common_probe(struct iio_dev *indio_dev)
543 struct st_sensor_data *adata = iio_priv(indio_dev);
544 int irq = adata->get_irq_data_ready(indio_dev);
547 indio_dev->modes = INDIO_DIRECT_MODE;
548 indio_dev->info = &accel_info;
550 st_sensors_power_enable(indio_dev);
552 err = st_sensors_check_device_support(indio_dev,
553 ARRAY_SIZE(st_accel_sensors_settings),
554 st_accel_sensors_settings);
558 adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
559 adata->multiread_bit = adata->sensor_settings->multi_read_bit;
560 indio_dev->channels = adata->sensor_settings->ch;
561 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
563 adata->current_fullscale = (struct st_sensor_fullscale_avl *)
564 &adata->sensor_settings->fs.fs_avl[0];
565 adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
567 if (!adata->dev->platform_data)
568 adata->dev->platform_data =
569 (struct st_sensors_platform_data *)&default_accel_pdata;
571 err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data);
575 err = st_accel_allocate_ring(indio_dev);
580 err = st_sensors_allocate_trigger(indio_dev,
581 ST_ACCEL_TRIGGER_OPS);
583 goto st_accel_probe_trigger_error;
586 err = iio_device_register(indio_dev);
588 goto st_accel_device_register_error;
590 dev_info(&indio_dev->dev, "registered accelerometer %s\n",
595 st_accel_device_register_error:
597 st_sensors_deallocate_trigger(indio_dev);
598 st_accel_probe_trigger_error:
599 st_accel_deallocate_ring(indio_dev);
603 EXPORT_SYMBOL(st_accel_common_probe);
605 void st_accel_common_remove(struct iio_dev *indio_dev)
607 struct st_sensor_data *adata = iio_priv(indio_dev);
609 st_sensors_power_disable(indio_dev);
611 iio_device_unregister(indio_dev);
612 if (adata->get_irq_data_ready(indio_dev) > 0)
613 st_sensors_deallocate_trigger(indio_dev);
615 st_accel_deallocate_ring(indio_dev);
617 EXPORT_SYMBOL(st_accel_common_remove);
619 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
620 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
621 MODULE_LICENSE("GPL v2");