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Merge git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux
[deliverable/linux.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_IHL_IRQ_ADDR 0x25
71 #define ST_ACCEL_1_IHL_IRQ_MASK 0x02
72 #define ST_ACCEL_1_MULTIREAD_BIT true
73
74 /* CUSTOM VALUES FOR SENSOR 2 */
75 #define ST_ACCEL_2_WAI_EXP 0x32
76 #define ST_ACCEL_2_ODR_ADDR 0x20
77 #define ST_ACCEL_2_ODR_MASK 0x18
78 #define ST_ACCEL_2_ODR_AVL_50HZ_VAL 0x00
79 #define ST_ACCEL_2_ODR_AVL_100HZ_VAL 0x01
80 #define ST_ACCEL_2_ODR_AVL_400HZ_VAL 0x02
81 #define ST_ACCEL_2_ODR_AVL_1000HZ_VAL 0x03
82 #define ST_ACCEL_2_PW_ADDR 0x20
83 #define ST_ACCEL_2_PW_MASK 0xe0
84 #define ST_ACCEL_2_FS_ADDR 0x23
85 #define ST_ACCEL_2_FS_MASK 0x30
86 #define ST_ACCEL_2_FS_AVL_2_VAL 0X00
87 #define ST_ACCEL_2_FS_AVL_4_VAL 0X01
88 #define ST_ACCEL_2_FS_AVL_8_VAL 0x03
89 #define ST_ACCEL_2_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1000)
90 #define ST_ACCEL_2_FS_AVL_4_GAIN IIO_G_TO_M_S_2(2000)
91 #define ST_ACCEL_2_FS_AVL_8_GAIN IIO_G_TO_M_S_2(3900)
92 #define ST_ACCEL_2_BDU_ADDR 0x23
93 #define ST_ACCEL_2_BDU_MASK 0x80
94 #define ST_ACCEL_2_DRDY_IRQ_ADDR 0x22
95 #define ST_ACCEL_2_DRDY_IRQ_INT1_MASK 0x02
96 #define ST_ACCEL_2_DRDY_IRQ_INT2_MASK 0x10
97 #define ST_ACCEL_2_IHL_IRQ_ADDR 0x22
98 #define ST_ACCEL_2_IHL_IRQ_MASK 0x80
99 #define ST_ACCEL_2_MULTIREAD_BIT true
100
101 /* CUSTOM VALUES FOR SENSOR 3 */
102 #define ST_ACCEL_3_WAI_EXP 0x40
103 #define ST_ACCEL_3_ODR_ADDR 0x20
104 #define ST_ACCEL_3_ODR_MASK 0xf0
105 #define ST_ACCEL_3_ODR_AVL_3HZ_VAL 0x01
106 #define ST_ACCEL_3_ODR_AVL_6HZ_VAL 0x02
107 #define ST_ACCEL_3_ODR_AVL_12HZ_VAL 0x03
108 #define ST_ACCEL_3_ODR_AVL_25HZ_VAL 0x04
109 #define ST_ACCEL_3_ODR_AVL_50HZ_VAL 0x05
110 #define ST_ACCEL_3_ODR_AVL_100HZ_VAL 0x06
111 #define ST_ACCEL_3_ODR_AVL_200HZ_VAL 0x07
112 #define ST_ACCEL_3_ODR_AVL_400HZ_VAL 0x08
113 #define ST_ACCEL_3_ODR_AVL_800HZ_VAL 0x09
114 #define ST_ACCEL_3_ODR_AVL_1600HZ_VAL 0x0a
115 #define ST_ACCEL_3_FS_ADDR 0x24
116 #define ST_ACCEL_3_FS_MASK 0x38
117 #define ST_ACCEL_3_FS_AVL_2_VAL 0X00
118 #define ST_ACCEL_3_FS_AVL_4_VAL 0X01
119 #define ST_ACCEL_3_FS_AVL_6_VAL 0x02
120 #define ST_ACCEL_3_FS_AVL_8_VAL 0x03
121 #define ST_ACCEL_3_FS_AVL_16_VAL 0x04
122 #define ST_ACCEL_3_FS_AVL_2_GAIN IIO_G_TO_M_S_2(61)
123 #define ST_ACCEL_3_FS_AVL_4_GAIN IIO_G_TO_M_S_2(122)
124 #define ST_ACCEL_3_FS_AVL_6_GAIN IIO_G_TO_M_S_2(183)
125 #define ST_ACCEL_3_FS_AVL_8_GAIN IIO_G_TO_M_S_2(244)
126 #define ST_ACCEL_3_FS_AVL_16_GAIN IIO_G_TO_M_S_2(732)
127 #define ST_ACCEL_3_BDU_ADDR 0x20
128 #define ST_ACCEL_3_BDU_MASK 0x08
129 #define ST_ACCEL_3_DRDY_IRQ_ADDR 0x23
130 #define ST_ACCEL_3_DRDY_IRQ_INT1_MASK 0x80
131 #define ST_ACCEL_3_DRDY_IRQ_INT2_MASK 0x00
132 #define ST_ACCEL_3_IHL_IRQ_ADDR 0x23
133 #define ST_ACCEL_3_IHL_IRQ_MASK 0x40
134 #define ST_ACCEL_3_IG1_EN_ADDR 0x23
135 #define ST_ACCEL_3_IG1_EN_MASK 0x08
136 #define ST_ACCEL_3_MULTIREAD_BIT false
137
138 /* CUSTOM VALUES FOR SENSOR 4 */
139 #define ST_ACCEL_4_WAI_EXP 0x3a
140 #define ST_ACCEL_4_ODR_ADDR 0x20
141 #define ST_ACCEL_4_ODR_MASK 0x30 /* DF1 and DF0 */
142 #define ST_ACCEL_4_ODR_AVL_40HZ_VAL 0x00
143 #define ST_ACCEL_4_ODR_AVL_160HZ_VAL 0x01
144 #define ST_ACCEL_4_ODR_AVL_640HZ_VAL 0x02
145 #define ST_ACCEL_4_ODR_AVL_2560HZ_VAL 0x03
146 #define ST_ACCEL_4_PW_ADDR 0x20
147 #define ST_ACCEL_4_PW_MASK 0xc0
148 #define ST_ACCEL_4_FS_ADDR 0x21
149 #define ST_ACCEL_4_FS_MASK 0x80
150 #define ST_ACCEL_4_FS_AVL_2_VAL 0X00
151 #define ST_ACCEL_4_FS_AVL_6_VAL 0X01
152 #define ST_ACCEL_4_FS_AVL_2_GAIN IIO_G_TO_M_S_2(1024)
153 #define ST_ACCEL_4_FS_AVL_6_GAIN IIO_G_TO_M_S_2(340)
154 #define ST_ACCEL_4_BDU_ADDR 0x21
155 #define ST_ACCEL_4_BDU_MASK 0x40
156 #define ST_ACCEL_4_DRDY_IRQ_ADDR 0x21
157 #define ST_ACCEL_4_DRDY_IRQ_INT1_MASK 0x04
158 #define ST_ACCEL_4_MULTIREAD_BIT true
159
160 /* CUSTOM VALUES FOR SENSOR 5 */
161 #define ST_ACCEL_5_WAI_EXP 0x3b
162 #define ST_ACCEL_5_ODR_ADDR 0x20
163 #define ST_ACCEL_5_ODR_MASK 0x80
164 #define ST_ACCEL_5_ODR_AVL_100HZ_VAL 0x00
165 #define ST_ACCEL_5_ODR_AVL_400HZ_VAL 0x01
166 #define ST_ACCEL_5_PW_ADDR 0x20
167 #define ST_ACCEL_5_PW_MASK 0x40
168 #define ST_ACCEL_5_FS_ADDR 0x20
169 #define ST_ACCEL_5_FS_MASK 0x20
170 #define ST_ACCEL_5_FS_AVL_2_VAL 0X00
171 #define ST_ACCEL_5_FS_AVL_8_VAL 0X01
172 /* TODO: check these resulting gain settings, these are not in the datsheet */
173 #define ST_ACCEL_5_FS_AVL_2_GAIN IIO_G_TO_M_S_2(18000)
174 #define ST_ACCEL_5_FS_AVL_8_GAIN IIO_G_TO_M_S_2(72000)
175 #define ST_ACCEL_5_DRDY_IRQ_ADDR 0x22
176 #define ST_ACCEL_5_DRDY_IRQ_INT1_MASK 0x04
177 #define ST_ACCEL_5_DRDY_IRQ_INT2_MASK 0x20
178 #define ST_ACCEL_5_IHL_IRQ_ADDR 0x22
179 #define ST_ACCEL_5_IHL_IRQ_MASK 0x80
180 #define ST_ACCEL_5_IG1_EN_ADDR 0x21
181 #define ST_ACCEL_5_IG1_EN_MASK 0x08
182 #define ST_ACCEL_5_MULTIREAD_BIT false
183
184 static const struct iio_chan_spec st_accel_8bit_channels[] = {
185 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
186 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
187 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 8, 8,
188 ST_ACCEL_DEFAULT_OUT_X_L_ADDR+1),
189 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
190 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
191 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 8, 8,
192 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR+1),
193 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
194 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
195 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 8, 8,
196 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR+1),
197 IIO_CHAN_SOFT_TIMESTAMP(3)
198 };
199
200 static const struct iio_chan_spec st_accel_12bit_channels[] = {
201 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
202 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
203 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 12, 16,
204 ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
205 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
206 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
207 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 12, 16,
208 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
209 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
210 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
211 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 12, 16,
212 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
213 IIO_CHAN_SOFT_TIMESTAMP(3)
214 };
215
216 static const struct iio_chan_spec st_accel_16bit_channels[] = {
217 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
218 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
219 ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16,
220 ST_ACCEL_DEFAULT_OUT_X_L_ADDR),
221 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
222 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
223 ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16,
224 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR),
225 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL,
226 BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE),
227 ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16,
228 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR),
229 IIO_CHAN_SOFT_TIMESTAMP(3)
230 };
231
232 static const struct st_sensor_settings st_accel_sensors_settings[] = {
233 {
234 .wai = ST_ACCEL_1_WAI_EXP,
235 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
236 .sensors_supported = {
237 [0] = LIS3DH_ACCEL_DEV_NAME,
238 [1] = LSM303DLHC_ACCEL_DEV_NAME,
239 [2] = LSM330D_ACCEL_DEV_NAME,
240 [3] = LSM330DL_ACCEL_DEV_NAME,
241 [4] = LSM330DLC_ACCEL_DEV_NAME,
242 [5] = LSM303AGR_ACCEL_DEV_NAME,
243 [6] = LIS2DH12_ACCEL_DEV_NAME,
244 },
245 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
246 .odr = {
247 .addr = ST_ACCEL_1_ODR_ADDR,
248 .mask = ST_ACCEL_1_ODR_MASK,
249 .odr_avl = {
250 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL, },
251 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL, },
252 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL, },
253 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL, },
254 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL, },
255 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL, },
256 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL, },
257 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL, },
258 },
259 },
260 .pw = {
261 .addr = ST_ACCEL_1_ODR_ADDR,
262 .mask = ST_ACCEL_1_ODR_MASK,
263 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
264 },
265 .enable_axis = {
266 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
267 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
268 },
269 .fs = {
270 .addr = ST_ACCEL_1_FS_ADDR,
271 .mask = ST_ACCEL_1_FS_MASK,
272 .fs_avl = {
273 [0] = {
274 .num = ST_ACCEL_FS_AVL_2G,
275 .value = ST_ACCEL_1_FS_AVL_2_VAL,
276 .gain = ST_ACCEL_1_FS_AVL_2_GAIN,
277 },
278 [1] = {
279 .num = ST_ACCEL_FS_AVL_4G,
280 .value = ST_ACCEL_1_FS_AVL_4_VAL,
281 .gain = ST_ACCEL_1_FS_AVL_4_GAIN,
282 },
283 [2] = {
284 .num = ST_ACCEL_FS_AVL_8G,
285 .value = ST_ACCEL_1_FS_AVL_8_VAL,
286 .gain = ST_ACCEL_1_FS_AVL_8_GAIN,
287 },
288 [3] = {
289 .num = ST_ACCEL_FS_AVL_16G,
290 .value = ST_ACCEL_1_FS_AVL_16_VAL,
291 .gain = ST_ACCEL_1_FS_AVL_16_GAIN,
292 },
293 },
294 },
295 .bdu = {
296 .addr = ST_ACCEL_1_BDU_ADDR,
297 .mask = ST_ACCEL_1_BDU_MASK,
298 },
299 .drdy_irq = {
300 .addr = ST_ACCEL_1_DRDY_IRQ_ADDR,
301 .mask_int1 = ST_ACCEL_1_DRDY_IRQ_INT1_MASK,
302 .mask_int2 = ST_ACCEL_1_DRDY_IRQ_INT2_MASK,
303 .addr_ihl = ST_ACCEL_1_IHL_IRQ_ADDR,
304 .mask_ihl = ST_ACCEL_1_IHL_IRQ_MASK,
305 },
306 .multi_read_bit = ST_ACCEL_1_MULTIREAD_BIT,
307 .bootime = 2,
308 },
309 {
310 .wai = ST_ACCEL_2_WAI_EXP,
311 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
312 .sensors_supported = {
313 [0] = LIS331DLH_ACCEL_DEV_NAME,
314 [1] = LSM303DL_ACCEL_DEV_NAME,
315 [2] = LSM303DLH_ACCEL_DEV_NAME,
316 [3] = LSM303DLM_ACCEL_DEV_NAME,
317 },
318 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
319 .odr = {
320 .addr = ST_ACCEL_2_ODR_ADDR,
321 .mask = ST_ACCEL_2_ODR_MASK,
322 .odr_avl = {
323 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL, },
324 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL, },
325 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL, },
326 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL, },
327 },
328 },
329 .pw = {
330 .addr = ST_ACCEL_2_PW_ADDR,
331 .mask = ST_ACCEL_2_PW_MASK,
332 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
333 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
334 },
335 .enable_axis = {
336 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
337 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
338 },
339 .fs = {
340 .addr = ST_ACCEL_2_FS_ADDR,
341 .mask = ST_ACCEL_2_FS_MASK,
342 .fs_avl = {
343 [0] = {
344 .num = ST_ACCEL_FS_AVL_2G,
345 .value = ST_ACCEL_2_FS_AVL_2_VAL,
346 .gain = ST_ACCEL_2_FS_AVL_2_GAIN,
347 },
348 [1] = {
349 .num = ST_ACCEL_FS_AVL_4G,
350 .value = ST_ACCEL_2_FS_AVL_4_VAL,
351 .gain = ST_ACCEL_2_FS_AVL_4_GAIN,
352 },
353 [2] = {
354 .num = ST_ACCEL_FS_AVL_8G,
355 .value = ST_ACCEL_2_FS_AVL_8_VAL,
356 .gain = ST_ACCEL_2_FS_AVL_8_GAIN,
357 },
358 },
359 },
360 .bdu = {
361 .addr = ST_ACCEL_2_BDU_ADDR,
362 .mask = ST_ACCEL_2_BDU_MASK,
363 },
364 .drdy_irq = {
365 .addr = ST_ACCEL_2_DRDY_IRQ_ADDR,
366 .mask_int1 = ST_ACCEL_2_DRDY_IRQ_INT1_MASK,
367 .mask_int2 = ST_ACCEL_2_DRDY_IRQ_INT2_MASK,
368 .addr_ihl = ST_ACCEL_2_IHL_IRQ_ADDR,
369 .mask_ihl = ST_ACCEL_2_IHL_IRQ_MASK,
370 },
371 .multi_read_bit = ST_ACCEL_2_MULTIREAD_BIT,
372 .bootime = 2,
373 },
374 {
375 .wai = ST_ACCEL_3_WAI_EXP,
376 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
377 .sensors_supported = {
378 [0] = LSM330_ACCEL_DEV_NAME,
379 },
380 .ch = (struct iio_chan_spec *)st_accel_16bit_channels,
381 .odr = {
382 .addr = ST_ACCEL_3_ODR_ADDR,
383 .mask = ST_ACCEL_3_ODR_MASK,
384 .odr_avl = {
385 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL },
386 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL, },
387 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL, },
388 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL, },
389 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL, },
390 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL, },
391 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL, },
392 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL, },
393 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL, },
394 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL, },
395 },
396 },
397 .pw = {
398 .addr = ST_ACCEL_3_ODR_ADDR,
399 .mask = ST_ACCEL_3_ODR_MASK,
400 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
401 },
402 .enable_axis = {
403 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
404 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
405 },
406 .fs = {
407 .addr = ST_ACCEL_3_FS_ADDR,
408 .mask = ST_ACCEL_3_FS_MASK,
409 .fs_avl = {
410 [0] = {
411 .num = ST_ACCEL_FS_AVL_2G,
412 .value = ST_ACCEL_3_FS_AVL_2_VAL,
413 .gain = ST_ACCEL_3_FS_AVL_2_GAIN,
414 },
415 [1] = {
416 .num = ST_ACCEL_FS_AVL_4G,
417 .value = ST_ACCEL_3_FS_AVL_4_VAL,
418 .gain = ST_ACCEL_3_FS_AVL_4_GAIN,
419 },
420 [2] = {
421 .num = ST_ACCEL_FS_AVL_6G,
422 .value = ST_ACCEL_3_FS_AVL_6_VAL,
423 .gain = ST_ACCEL_3_FS_AVL_6_GAIN,
424 },
425 [3] = {
426 .num = ST_ACCEL_FS_AVL_8G,
427 .value = ST_ACCEL_3_FS_AVL_8_VAL,
428 .gain = ST_ACCEL_3_FS_AVL_8_GAIN,
429 },
430 [4] = {
431 .num = ST_ACCEL_FS_AVL_16G,
432 .value = ST_ACCEL_3_FS_AVL_16_VAL,
433 .gain = ST_ACCEL_3_FS_AVL_16_GAIN,
434 },
435 },
436 },
437 .bdu = {
438 .addr = ST_ACCEL_3_BDU_ADDR,
439 .mask = ST_ACCEL_3_BDU_MASK,
440 },
441 .drdy_irq = {
442 .addr = ST_ACCEL_3_DRDY_IRQ_ADDR,
443 .mask_int1 = ST_ACCEL_3_DRDY_IRQ_INT1_MASK,
444 .mask_int2 = ST_ACCEL_3_DRDY_IRQ_INT2_MASK,
445 .addr_ihl = ST_ACCEL_3_IHL_IRQ_ADDR,
446 .mask_ihl = ST_ACCEL_3_IHL_IRQ_MASK,
447 .ig1 = {
448 .en_addr = ST_ACCEL_3_IG1_EN_ADDR,
449 .en_mask = ST_ACCEL_3_IG1_EN_MASK,
450 },
451 },
452 .multi_read_bit = ST_ACCEL_3_MULTIREAD_BIT,
453 .bootime = 2,
454 },
455 {
456 .wai = ST_ACCEL_4_WAI_EXP,
457 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
458 .sensors_supported = {
459 [0] = LIS3LV02DL_ACCEL_DEV_NAME,
460 },
461 .ch = (struct iio_chan_spec *)st_accel_12bit_channels,
462 .odr = {
463 .addr = ST_ACCEL_4_ODR_ADDR,
464 .mask = ST_ACCEL_4_ODR_MASK,
465 .odr_avl = {
466 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL },
467 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL, },
468 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL, },
469 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL, },
470 },
471 },
472 .pw = {
473 .addr = ST_ACCEL_4_PW_ADDR,
474 .mask = ST_ACCEL_4_PW_MASK,
475 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
476 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
477 },
478 .enable_axis = {
479 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
480 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
481 },
482 .fs = {
483 .addr = ST_ACCEL_4_FS_ADDR,
484 .mask = ST_ACCEL_4_FS_MASK,
485 .fs_avl = {
486 [0] = {
487 .num = ST_ACCEL_FS_AVL_2G,
488 .value = ST_ACCEL_4_FS_AVL_2_VAL,
489 .gain = ST_ACCEL_4_FS_AVL_2_GAIN,
490 },
491 [1] = {
492 .num = ST_ACCEL_FS_AVL_6G,
493 .value = ST_ACCEL_4_FS_AVL_6_VAL,
494 .gain = ST_ACCEL_4_FS_AVL_6_GAIN,
495 },
496 },
497 },
498 .bdu = {
499 .addr = ST_ACCEL_4_BDU_ADDR,
500 .mask = ST_ACCEL_4_BDU_MASK,
501 },
502 .drdy_irq = {
503 .addr = ST_ACCEL_4_DRDY_IRQ_ADDR,
504 .mask_int1 = ST_ACCEL_4_DRDY_IRQ_INT1_MASK,
505 },
506 .multi_read_bit = ST_ACCEL_4_MULTIREAD_BIT,
507 .bootime = 2, /* guess */
508 },
509 {
510 .wai = ST_ACCEL_5_WAI_EXP,
511 .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS,
512 .sensors_supported = {
513 [0] = LIS331DL_ACCEL_DEV_NAME,
514 },
515 .ch = (struct iio_chan_spec *)st_accel_8bit_channels,
516 .odr = {
517 .addr = ST_ACCEL_5_ODR_ADDR,
518 .mask = ST_ACCEL_5_ODR_MASK,
519 .odr_avl = {
520 { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL },
521 { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL, },
522 },
523 },
524 .pw = {
525 .addr = ST_ACCEL_5_PW_ADDR,
526 .mask = ST_ACCEL_5_PW_MASK,
527 .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE,
528 .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE,
529 },
530 .enable_axis = {
531 .addr = ST_SENSORS_DEFAULT_AXIS_ADDR,
532 .mask = ST_SENSORS_DEFAULT_AXIS_MASK,
533 },
534 .fs = {
535 .addr = ST_ACCEL_5_FS_ADDR,
536 .mask = ST_ACCEL_5_FS_MASK,
537 .fs_avl = {
538 [0] = {
539 .num = ST_ACCEL_FS_AVL_2G,
540 .value = ST_ACCEL_5_FS_AVL_2_VAL,
541 .gain = ST_ACCEL_5_FS_AVL_2_GAIN,
542 },
543 [1] = {
544 .num = ST_ACCEL_FS_AVL_8G,
545 .value = ST_ACCEL_5_FS_AVL_8_VAL,
546 .gain = ST_ACCEL_5_FS_AVL_8_GAIN,
547 },
548 },
549 },
550 .drdy_irq = {
551 .addr = ST_ACCEL_5_DRDY_IRQ_ADDR,
552 .mask_int1 = ST_ACCEL_5_DRDY_IRQ_INT1_MASK,
553 .mask_int2 = ST_ACCEL_5_DRDY_IRQ_INT2_MASK,
554 .addr_ihl = ST_ACCEL_5_IHL_IRQ_ADDR,
555 .mask_ihl = ST_ACCEL_5_IHL_IRQ_MASK,
556 },
557 .multi_read_bit = ST_ACCEL_5_MULTIREAD_BIT,
558 .bootime = 2, /* guess */
559 },
560 };
561
562 static int st_accel_read_raw(struct iio_dev *indio_dev,
563 struct iio_chan_spec const *ch, int *val,
564 int *val2, long mask)
565 {
566 int err;
567 struct st_sensor_data *adata = iio_priv(indio_dev);
568
569 switch (mask) {
570 case IIO_CHAN_INFO_RAW:
571 err = st_sensors_read_info_raw(indio_dev, ch, val);
572 if (err < 0)
573 goto read_error;
574
575 return IIO_VAL_INT;
576 case IIO_CHAN_INFO_SCALE:
577 *val = 0;
578 *val2 = adata->current_fullscale->gain;
579 return IIO_VAL_INT_PLUS_MICRO;
580 case IIO_CHAN_INFO_SAMP_FREQ:
581 *val = adata->odr;
582 return IIO_VAL_INT;
583 default:
584 return -EINVAL;
585 }
586
587 read_error:
588 return err;
589 }
590
591 static int st_accel_write_raw(struct iio_dev *indio_dev,
592 struct iio_chan_spec const *chan, int val, int val2, long mask)
593 {
594 int err;
595
596 switch (mask) {
597 case IIO_CHAN_INFO_SCALE:
598 err = st_sensors_set_fullscale_by_gain(indio_dev, val2);
599 break;
600 case IIO_CHAN_INFO_SAMP_FREQ:
601 if (val2)
602 return -EINVAL;
603 mutex_lock(&indio_dev->mlock);
604 err = st_sensors_set_odr(indio_dev, val);
605 mutex_unlock(&indio_dev->mlock);
606 return err;
607 default:
608 return -EINVAL;
609 }
610
611 return err;
612 }
613
614 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
615 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available);
616
617 static struct attribute *st_accel_attributes[] = {
618 &iio_dev_attr_sampling_frequency_available.dev_attr.attr,
619 &iio_dev_attr_in_accel_scale_available.dev_attr.attr,
620 NULL,
621 };
622
623 static const struct attribute_group st_accel_attribute_group = {
624 .attrs = st_accel_attributes,
625 };
626
627 static const struct iio_info accel_info = {
628 .driver_module = THIS_MODULE,
629 .attrs = &st_accel_attribute_group,
630 .read_raw = &st_accel_read_raw,
631 .write_raw = &st_accel_write_raw,
632 .debugfs_reg_access = &st_sensors_debugfs_reg_access,
633 };
634
635 #ifdef CONFIG_IIO_TRIGGER
636 static const struct iio_trigger_ops st_accel_trigger_ops = {
637 .owner = THIS_MODULE,
638 .set_trigger_state = ST_ACCEL_TRIGGER_SET_STATE,
639 };
640 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
641 #else
642 #define ST_ACCEL_TRIGGER_OPS NULL
643 #endif
644
645 int st_accel_common_probe(struct iio_dev *indio_dev)
646 {
647 struct st_sensor_data *adata = iio_priv(indio_dev);
648 int irq = adata->get_irq_data_ready(indio_dev);
649 int err;
650
651 indio_dev->modes = INDIO_DIRECT_MODE;
652 indio_dev->info = &accel_info;
653 mutex_init(&adata->tb.buf_lock);
654
655 st_sensors_power_enable(indio_dev);
656
657 err = st_sensors_check_device_support(indio_dev,
658 ARRAY_SIZE(st_accel_sensors_settings),
659 st_accel_sensors_settings);
660 if (err < 0)
661 return err;
662
663 adata->num_data_channels = ST_ACCEL_NUMBER_DATA_CHANNELS;
664 adata->multiread_bit = adata->sensor_settings->multi_read_bit;
665 indio_dev->channels = adata->sensor_settings->ch;
666 indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS;
667
668 adata->current_fullscale = (struct st_sensor_fullscale_avl *)
669 &adata->sensor_settings->fs.fs_avl[0];
670 adata->odr = adata->sensor_settings->odr.odr_avl[0].hz;
671
672 if (!adata->dev->platform_data)
673 adata->dev->platform_data =
674 (struct st_sensors_platform_data *)&default_accel_pdata;
675
676 err = st_sensors_init_sensor(indio_dev, adata->dev->platform_data);
677 if (err < 0)
678 return err;
679
680 err = st_accel_allocate_ring(indio_dev);
681 if (err < 0)
682 return err;
683
684 if (irq > 0) {
685 err = st_sensors_allocate_trigger(indio_dev,
686 ST_ACCEL_TRIGGER_OPS);
687 if (err < 0)
688 goto st_accel_probe_trigger_error;
689 }
690
691 err = iio_device_register(indio_dev);
692 if (err)
693 goto st_accel_device_register_error;
694
695 dev_info(&indio_dev->dev, "registered accelerometer %s\n",
696 indio_dev->name);
697
698 return 0;
699
700 st_accel_device_register_error:
701 if (irq > 0)
702 st_sensors_deallocate_trigger(indio_dev);
703 st_accel_probe_trigger_error:
704 st_accel_deallocate_ring(indio_dev);
705
706 return err;
707 }
708 EXPORT_SYMBOL(st_accel_common_probe);
709
710 void st_accel_common_remove(struct iio_dev *indio_dev)
711 {
712 struct st_sensor_data *adata = iio_priv(indio_dev);
713
714 st_sensors_power_disable(indio_dev);
715
716 iio_device_unregister(indio_dev);
717 if (adata->get_irq_data_ready(indio_dev) > 0)
718 st_sensors_deallocate_trigger(indio_dev);
719
720 st_accel_deallocate_ring(indio_dev);
721 }
722 EXPORT_SYMBOL(st_accel_common_remove);
723
724 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
725 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
726 MODULE_LICENSE("GPL v2");
Linux kernel - Deliverables
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