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Merge remote-tracking branch 'asoc/topic/dapm' into asoc-next
[mirror_ubuntu-zesty-kernel.git] / drivers / iio / accel / st_accel_core.c
1 /*
2 * STMicroelectronics accelerometers driver
3 *
4 * Copyright 2012-2013 STMicroelectronics Inc.
5 *
6 * Denis Ciocca <denis.ciocca@st.com>
7 *
8 * Licensed under the GPL-2.
9 */
10
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>
25
26 #include <linux/iio/common/st_sensors.h>
27 #include "st_accel.h"
28
29 #define ST_ACCEL_NUMBER_DATA_CHANNELS 3
30
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
35
36 /* FULLSCALE */
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
42
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
71
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
96
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
131
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_MULTIREAD_BIT true
153
154 /* CUSTOM VALUES FOR SENSOR 5 */
155 #define ST_ACCEL_5_WAI_EXP 0x3b
156 #define ST_ACCEL_5_ODR_ADDR 0x20
157 #define ST_ACCEL_5_ODR_MASK 0x80
158 #define ST_ACCEL_5_ODR_AVL_100HZ_VAL 0x00
159 #define ST_ACCEL_5_ODR_AVL_400HZ_VAL 0x01
160 #define ST_ACCEL_5_PW_ADDR 0x20
161 #define ST_ACCEL_5_PW_MASK 0x40
162 #define ST_ACCEL_5_FS_ADDR 0x20
163 #define ST_ACCEL_5_FS_MASK 0x20
164 #define ST_ACCEL_5_FS_AVL_2_VAL 0X00
165 #define ST_ACCEL_5_FS_AVL_8_VAL 0X01
166 /* TODO: check these resulting gain settings, these are not in the datsheet */
167 #define ST_ACCEL_5_FS_AVL_2_GAIN IIO_G_TO_M_S_2(18000)
168 #define ST_ACCEL_5_FS_AVL_8_GAIN IIO_G_TO_M_S_2(72000)
169 #define ST_ACCEL_5_DRDY_IRQ_ADDR 0x22
170 #define ST_ACCEL_5_DRDY_IRQ_INT1_MASK 0x04
171 #define ST_ACCEL_5_DRDY_IRQ_INT2_MASK 0x20
172 #define ST_ACCEL_5_IG1_EN_ADDR 0x21
173 #define ST_ACCEL_5_IG1_EN_MASK 0x08
174 #define ST_ACCEL_5_MULTIREAD_BIT false
175
176 static const struct iio_chan_spec st_accel_8bit_channels[] = {
177 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
178 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
179 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 8, 8,
180 ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1),
181 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
182 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
183 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 8, 8,
184 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1),
185 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
186 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
187 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 8, 8,
188 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1),
189 IIO_CHAN_SOFT_TIMESTAMP(3)
190 };
191
192 static const struct iio_chan_spec st_accel_12bit_channels[] = {
193 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
194 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
195 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16,
196 ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
197 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
198 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
199 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16,
200 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
201 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
202 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
203 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16,
204 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
205 IIO_CHAN_SOFT_TIMESTAMP(3)
206 };
207
208 static const struct iio_chan_spec st_accel_16bit_channels[] = {
209 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
210 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
211 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
212 ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
213 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
214 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
215 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
216 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
217 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
218 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
219 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
220 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
221 IIO_CHAN_SOFT_TIMESTAMP(3)
222 };
223
224 static const struct st_sensor_settings st_accel_sensors_settings[] = {
225 {
226 .wai = ST_ACCEL_1_WAI_EXP,
227 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
228 .sensors_supported = {
229 [0] = LIS3DH_ACCEL_DEV_NAME,
230 [1] = LSM303DLHC_ACCEL_DEV_NAME,
231 [2] = LSM330D_ACCEL_DEV_NAME,
232 [3] = LSM330DL_ACCEL_DEV_NAME,
233 [4] = LSM330DLC_ACCEL_DEV_NAME,
234 [5] = LSM303AGR_ACCEL_DEV_NAME,
235 },
236 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
237 .odr = {
238 .addr = ST_ACCEL_1_ODR_ADDR,
239 .mask = ST_ACCEL_1_ODR_MASK,
240 .odr_avl = {
241 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
242 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
243 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
244 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
245 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
246 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
247 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
248 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
249 },
250 },
251 .pw = {
252 .addr = ST_ACCEL_1_ODR_ADDR,
253 .mask = ST_ACCEL_1_ODR_MASK,
254 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
255 },
256 .enable_axis = {
257 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
258 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
259 },
260 .fs = {
261 .addr = ST_ACCEL_1_FS_ADDR,
262 .mask = ST_ACCEL_1_FS_MASK,
263 .fs_avl = {
264 [0] = {
265 .num = ST_ACCEL_FS_AVL_2G,
266 .value = ST_ACCEL_1_FS_AVL_2_VAL,
267 .gain = ST_ACCEL_1_FS_AVL_2_GAIN,
268 },
269 [1] = {
270 .num = ST_ACCEL_FS_AVL_4G,
271 .value = ST_ACCEL_1_FS_AVL_4_VAL,
272 .gain = ST_ACCEL_1_FS_AVL_4_GAIN,
273 },
274 [2] = {
275 .num = ST_ACCEL_FS_AVL_8G,
276 .value = ST_ACCEL_1_FS_AVL_8_VAL,
277 .gain = ST_ACCEL_1_FS_AVL_8_GAIN,
278 },
279 [3] = {
280 .num = ST_ACCEL_FS_AVL_16G,
281 .value = ST_ACCEL_1_FS_AVL_16_VAL,
282 .gain = ST_ACCEL_1_FS_AVL_16_GAIN,
283 },
284 },
285 },
286 .bdu = {
287 .addr = ST_ACCEL_1_BDU_ADDR,
288 .mask = ST_ACCEL_1_BDU_MASK,
289 },
290 .drdy_irq = {
291 .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
292 .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
293 .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
294 },
295 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
296 .bootime = 2,
297 },
298 {
299 .wai = ST_ACCEL_2_WAI_EXP,
300 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
301 .sensors_supported = {
302 [0] = LIS331DLH_ACCEL_DEV_NAME,
303 [1] = LSM303DL_ACCEL_DEV_NAME,
304 [2] = LSM303DLH_ACCEL_DEV_NAME,
305 [3] = LSM303DLM_ACCEL_DEV_NAME,
306 },
307 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
308 .odr = {
309 .addr = ST_ACCEL_2_ODR_ADDR,
310 .mask = ST_ACCEL_2_ODR_MASK,
311 .odr_avl = {
312 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
313 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
314 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
315 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
316 },
317 },
318 .pw = {
319 .addr = ST_ACCEL_2_PW_ADDR,
320 .mask = ST_ACCEL_2_PW_MASK,
321 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
322 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
323 },
324 .enable_axis = {
325 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
326 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
327 },
328 .fs = {
329 .addr = ST_ACCEL_2_FS_ADDR,
330 .mask = ST_ACCEL_2_FS_MASK,
331 .fs_avl = {
332 [0] = {
333 .num = ST_ACCEL_FS_AVL_2G,
334 .value = ST_ACCEL_2_FS_AVL_2_VAL,
335 .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
336 },
337 [1] = {
338 .num = ST_ACCEL_FS_AVL_4G,
339 .value = ST_ACCEL_2_FS_AVL_4_VAL,
340 .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
341 },
342 [2] = {
343 .num = ST_ACCEL_FS_AVL_8G,
344 .value = ST_ACCEL_2_FS_AVL_8_VAL,
345 .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
346 },
347 },
348 },
349 .bdu = {
350 .addr = ST_ACCEL_2_BDU_ADDR,
351 .mask = ST_ACCEL_2_BDU_MASK,
352 },
353 .drdy_irq = {
354 .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
355 .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
356 .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
357 },
358 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
359 .bootime = 2,
360 },
361 {
362 .wai = ST_ACCEL_3_WAI_EXP,
363 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
364 .sensors_supported = {
365 [0] = LSM330_ACCEL_DEV_NAME,
366 },
367 .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
368 .odr = {
369 .addr = ST_ACCEL_3_ODR_ADDR,
370 .mask = ST_ACCEL_3_ODR_MASK,
371 .odr_avl = {
372 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
373 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
374 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
375 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
376 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
377 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
378 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
379 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
380 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
381 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
382 },
383 },
384 .pw = {
385 .addr = ST_ACCEL_3_ODR_ADDR,
386 .mask = ST_ACCEL_3_ODR_MASK,
387 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
388 },
389 .enable_axis = {
390 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
391 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
392 },
393 .fs = {
394 .addr = ST_ACCEL_3_FS_ADDR,
395 .mask = ST_ACCEL_3_FS_MASK,
396 .fs_avl = {
397 [0] = {
398 .num = ST_ACCEL_FS_AVL_2G,
399 .value = ST_ACCEL_3_FS_AVL_2_VAL,
400 .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
401 },
402 [1] = {
403 .num = ST_ACCEL_FS_AVL_4G,
404 .value = ST_ACCEL_3_FS_AVL_4_VAL,
405 .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
406 },
407 [2] = {
408 .num = ST_ACCEL_FS_AVL_6G,
409 .value = ST_ACCEL_3_FS_AVL_6_VAL,
410 .gain = ST_ACCEL_3_FS_AVL_6_GAIN,
411 },
412 [3] = {
413 .num = ST_ACCEL_FS_AVL_8G,
414 .value = ST_ACCEL_3_FS_AVL_8_VAL,
415 .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
416 },
417 [4] = {
418 .num = ST_ACCEL_FS_AVL_16G,
419 .value = ST_ACCEL_3_FS_AVL_16_VAL,
420 .gain = ST_ACCEL_3_FS_AVL_16_GAIN,
421 },
422 },
423 },
424 .bdu = {
425 .addr = ST_ACCEL_3_BDU_ADDR,
426 .mask = ST_ACCEL_3_BDU_MASK,
427 },
428 .drdy_irq = {
429 .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
430 .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
431 .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
432 .ig1 = {
433 .en_addr = ST_ACCEL_3_IG1_EN_ADDR,
434 .en_mask = ST_ACCEL_3_IG1_EN_MASK,
435 },
436 },
437 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
438 .bootime = 2,
439 },
440 {
441 .wai = ST_ACCEL_4_WAI_EXP,
442 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
443 .sensors_supported = {
444 [0] = LIS3LV02DL_ACCEL_DEV_NAME,
445 },
446 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
447 .odr = {
448 .addr = ST_ACCEL_4_ODR_ADDR,
449 .mask = ST_ACCEL_4_ODR_MASK,
450 .odr_avl = {
451 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
452 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
453 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
454 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
455 },
456 },
457 .pw = {
458 .addr = ST_ACCEL_4_PW_ADDR,
459 .mask = ST_ACCEL_4_PW_MASK,
460 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
461 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
462 },
463 .enable_axis = {
464 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
465 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
466 },
467 .fs = {
468 .addr = ST_ACCEL_4_FS_ADDR,
469 .mask = ST_ACCEL_4_FS_MASK,
470 .fs_avl = {
471 [0] = {
472 .num = ST_ACCEL_FS_AVL_2G,
473 .value = ST_ACCEL_4_FS_AVL_2_VAL,
474 .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
475 },
476 [1] = {
477 .num = ST_ACCEL_FS_AVL_6G,
478 .value = ST_ACCEL_4_FS_AVL_6_VAL,
479 .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
480 },
481 },
482 },
483 .bdu = {
484 .addr = ST_ACCEL_4_BDU_ADDR,
485 .mask = ST_ACCEL_4_BDU_MASK,
486 },
487 .drdy_irq = {
488 .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
489 .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
490 },
491 .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
492 .bootime = 2, /* guess */
493 },
494 {
495 .wai = ST_ACCEL_5_WAI_EXP,
496 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
497 .sensors_supported = {
498 [0] = LIS331DL_ACCEL_DEV_NAME,
499 },
500 .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
501 .odr = {
502 .addr = ST_ACCEL_5_ODR_ADDR,
503 .mask = ST_ACCEL_5_ODR_MASK,
504 .odr_avl = {
505 { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
506 { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
507 },
508 },
509 .pw = {
510 .addr = ST_ACCEL_5_PW_ADDR,
511 .mask = ST_ACCEL_5_PW_MASK,
512 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
513 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
514 },
515 .enable_axis = {
516 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
517 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
518 },
519 .fs = {
520 .addr = ST_ACCEL_5_FS_ADDR,
521 .mask = ST_ACCEL_5_FS_MASK,
522 .fs_avl = {
523 [0] = {
524 .num = ST_ACCEL_FS_AVL_2G,
525 .value = ST_ACCEL_5_FS_AVL_2_VAL,
526 .gain = ST_ACCEL_5_FS_AVL_2_GAIN,
527 },
528 [1] = {
529 .num = ST_ACCEL_FS_AVL_8G,
530 .value = ST_ACCEL_5_FS_AVL_8_VAL,
531 .gain = ST_ACCEL_5_FS_AVL_8_GAIN,
532 },
533 },
534 },
535 .drdy_irq = {
536 .addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
537 .mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
538 .mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
539 },
540 .multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
541 .bootime = 2, /* guess */
542 },
543 };
544
545 static int st_accel_read_raw(struct iio_dev *indio_dev,
546 struct iio_chan_spec const *ch, int *val,
547 int *val2, long mask)
548 {
549 int err;
550 struct st_sensor_data *adata = iio_priv(indio_dev);
551
552 switch (mask) {
553 case IIO_CHAN_INFO_RAW:
554 err = st_sensors_read_info_raw(indio_dev, ch, val);
555 if (err < 0)
556 goto read_error;
557
558 return IIO_VAL_INT;
559 case IIO_CHAN_INFO_SCALE:
560 *val = 0;
561 *val2 = adata->current_fullscale->gain;
562 return IIO_VAL_INT_PLUS_MICRO;
563 case IIO_CHAN_INFO_SAMP_FREQ:
564 *val = adata->odr;
565 return IIO_VAL_INT;
566 default:
567 return -EINVAL;
568 }
569
570 read_error:
571 return err;
572 }
573
574 static int st_accel_write_raw(struct iio_dev *indio_dev,
575 struct iio_chan_spec const *chan, int val, int val2, long mask)
576 {
577 int err;
578
579 switch (mask) {
580 case IIO_CHAN_INFO_SCALE:
581 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
582 break;
583 case IIO_CHAN_INFO_SAMP_FREQ:
584 if (val2)
585 return -EINVAL;
586 mutex_lock(&indio_dev->mlock);
587 err = st_sensors_set_odr(indio_dev, val);
588 mutex_unlock(&indio_dev->mlock);
589 return err;
590 default:
591 return -EINVAL;
592 }
593
594 return err;
595 }
596
597 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
598 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
599
600 static struct attribute *st_accel_attributes[] = {
601 &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
602 &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
603 NULL,
604 };
605
606 static const struct attribute_group st_accel_attribute_group = {
607 .attrs = st_accel_attributes,
608 };
609
610 static const struct iio_info accel_info = {
611 .driver_module = THIS_MODULE,
612 .attrs = &st_accel_attribute_group,
613 .read_raw = &st_accel_read_raw,
614 .write_raw = &st_accel_write_raw,
615 };
616
617 #ifdef CONFIG_IIO_TRIGGER
618 static const struct iio_trigger_ops st_accel_trigger_ops = {
619 .owner = THIS_MODULE,
620 .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
621 };
622 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
623 #else
624 #define ST_ACCEL_TRIGGER_OPS NULL
625 #endif
626
627 int st_accel_common_probe(struct iio_dev *indio_dev)
628 {
629 struct st_sensor_data *adata = iio_priv(indio_dev);
630 int irq = adata->get_irq_data_ready(indio_dev);
631 int err;
632
633 indio_dev->modes = INDIO_DIRECT_MODE;
634 indio_dev->info = &accel_info;
635 mutex_init(&adata->tb.buf_lock);
636
637 st_sensors_power_enable(indio_dev);
638
639 err = st_sensors_check_device_support(indio_dev,
640 ARRAY_SIZE(st_accel_sensors_settings),
641 st_accel_sensors_settings);
642 if (err < 0)
643 return err;
644
645 adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
646 adata->multiread_bit = adata->sensor_settings->multi_read_bit;
647 indio_dev->channels = adata->sensor_settings->ch;
648 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
649
650 adata->current_fullscale = (struct st_sensor_fullscale_avl *)
651 &adata->sensor_settings->fs.fs_avl[0];
652 adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
653
654 if (!adata->dev->platform_data)
655 adata->dev->platform_data =
656 (struct st_sensors_platform_data *)&default_accel_pdata;
657
658 err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data);
659 if (err < 0)
660 return err;
661
662 err = st_accel_allocate_ring(indio_dev);
663 if (err < 0)
664 return err;
665
666 if (irq > 0) {
667 err = st_sensors_allocate_trigger(indio_dev,
668 ST_ACCEL_TRIGGER_OPS);
669 if (err < 0)
670 goto st_accel_probe_trigger_error;
671 }
672
673 err = iio_device_register(indio_dev);
674 if (err)
675 goto st_accel_device_register_error;
676
677 dev_info(&indio_dev->dev, "registered accelerometer %s\n",
678 indio_dev->name);
679
680 return 0;
681
682 st_accel_device_register_error:
683 if (irq > 0)
684 st_sensors_deallocate_trigger(indio_dev);
685 st_accel_probe_trigger_error:
686 st_accel_deallocate_ring(indio_dev);
687
688 return err;
689 }
690 EXPORT_SYMBOL(st_accel_common_probe);
691
692 void st_accel_common_remove(struct iio_dev *indio_dev)
693 {
694 struct st_sensor_data *adata = iio_priv(indio_dev);
695
696 st_sensors_power_disable(indio_dev);
697
698 iio_device_unregister(indio_dev);
699 if (adata->get_irq_data_ready(indio_dev) > 0)
700 st_sensors_deallocate_trigger(indio_dev);
701
702 st_accel_deallocate_ring(indio_dev);
703 }
704 EXPORT_SYMBOL(st_accel_common_remove);
705
706 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
707 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
708 MODULE_LICENSE("GPL v2");
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