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 /* CUSTOM VALUES FOR SENSOR 5 */
157 #define ST_ACCEL_5_WAI_EXP 0x3b
158 #define ST_ACCEL_5_ODR_ADDR 0x20
159 #define ST_ACCEL_5_ODR_MASK 0x80
160 #define ST_ACCEL_5_ODR_AVL_100HZ_VAL 0x00
161 #define ST_ACCEL_5_ODR_AVL_400HZ_VAL 0x01
162 #define ST_ACCEL_5_PW_ADDR 0x20
163 #define ST_ACCEL_5_PW_MASK 0x40
164 #define ST_ACCEL_5_FS_ADDR 0x20
165 #define ST_ACCEL_5_FS_MASK 0x20
166 #define ST_ACCEL_5_FS_AVL_2_VAL 0X00
167 #define ST_ACCEL_5_FS_AVL_8_VAL 0X01
168 /* TODO: check these resulting gain settings, these are not in the datsheet */
169 #define ST_ACCEL_5_FS_AVL_2_GAIN IIO_G_TO_M_S_2(18000)
170 #define ST_ACCEL_5_FS_AVL_8_GAIN IIO_G_TO_M_S_2(72000)
171 #define ST_ACCEL_5_DRDY_IRQ_ADDR 0x22
172 #define ST_ACCEL_5_DRDY_IRQ_INT1_MASK 0x04
173 #define ST_ACCEL_5_DRDY_IRQ_INT2_MASK 0x20
174 #define ST_ACCEL_5_IG1_EN_ADDR 0x21
175 #define ST_ACCEL_5_IG1_EN_MASK 0x08
176 #define ST_ACCEL_5_MULTIREAD_BIT false
178 static const struct iio_chan_spec st_accel_8bit_channels
[] = {
179 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
180 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
181 ST_SENSORS_SCAN_X
, 1, IIO_MOD_X
, 's', IIO_LE
, 8, 8,
182 ST_ACCEL_DEFAULT_OUT_X_L_ADDR
+1),
183 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
184 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
185 ST_SENSORS_SCAN_Y
, 1, IIO_MOD_Y
, 's', IIO_LE
, 8, 8,
186 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR
+1),
187 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
188 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
189 ST_SENSORS_SCAN_Z
, 1, IIO_MOD_Z
, 's', IIO_LE
, 8, 8,
190 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR
+1),
191 IIO_CHAN_SOFT_TIMESTAMP(3)
194 static const struct iio_chan_spec st_accel_12bit_channels
[] = {
195 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
196 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
197 ST_SENSORS_SCAN_X
, 1, IIO_MOD_X
, 's', IIO_LE
, 12, 16,
198 ST_ACCEL_DEFAULT_OUT_X_L_ADDR
),
199 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
200 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
201 ST_SENSORS_SCAN_Y
, 1, IIO_MOD_Y
, 's', IIO_LE
, 12, 16,
202 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR
),
203 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
204 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
205 ST_SENSORS_SCAN_Z
, 1, IIO_MOD_Z
, 's', IIO_LE
, 12, 16,
206 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR
),
207 IIO_CHAN_SOFT_TIMESTAMP(3)
210 static const struct iio_chan_spec st_accel_16bit_channels
[] = {
211 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
212 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
213 ST_SENSORS_SCAN_X
, 1, IIO_MOD_X
, 's', IIO_LE
, 16, 16,
214 ST_ACCEL_DEFAULT_OUT_X_L_ADDR
),
215 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
216 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
217 ST_SENSORS_SCAN_Y
, 1, IIO_MOD_Y
, 's', IIO_LE
, 16, 16,
218 ST_ACCEL_DEFAULT_OUT_Y_L_ADDR
),
219 ST_SENSORS_LSM_CHANNELS(IIO_ACCEL
,
220 BIT(IIO_CHAN_INFO_RAW
) | BIT(IIO_CHAN_INFO_SCALE
),
221 ST_SENSORS_SCAN_Z
, 1, IIO_MOD_Z
, 's', IIO_LE
, 16, 16,
222 ST_ACCEL_DEFAULT_OUT_Z_L_ADDR
),
223 IIO_CHAN_SOFT_TIMESTAMP(3)
226 static const struct st_sensor_settings st_accel_sensors_settings
[] = {
228 .wai
= ST_ACCEL_1_WAI_EXP
,
229 .wai_addr
= ST_SENSORS_DEFAULT_WAI_ADDRESS
,
230 .sensors_supported
= {
231 [0] = LIS3DH_ACCEL_DEV_NAME
,
232 [1] = LSM303DLHC_ACCEL_DEV_NAME
,
233 [2] = LSM330D_ACCEL_DEV_NAME
,
234 [3] = LSM330DL_ACCEL_DEV_NAME
,
235 [4] = LSM330DLC_ACCEL_DEV_NAME
,
236 [5] = LSM303AGR_ACCEL_DEV_NAME
,
238 .ch
= (struct iio_chan_spec
*)st_accel_12bit_channels
,
240 .addr
= ST_ACCEL_1_ODR_ADDR
,
241 .mask
= ST_ACCEL_1_ODR_MASK
,
243 { 1, ST_ACCEL_1_ODR_AVL_1HZ_VAL
, },
244 { 10, ST_ACCEL_1_ODR_AVL_10HZ_VAL
, },
245 { 25, ST_ACCEL_1_ODR_AVL_25HZ_VAL
, },
246 { 50, ST_ACCEL_1_ODR_AVL_50HZ_VAL
, },
247 { 100, ST_ACCEL_1_ODR_AVL_100HZ_VAL
, },
248 { 200, ST_ACCEL_1_ODR_AVL_200HZ_VAL
, },
249 { 400, ST_ACCEL_1_ODR_AVL_400HZ_VAL
, },
250 { 1600, ST_ACCEL_1_ODR_AVL_1600HZ_VAL
, },
254 .addr
= ST_ACCEL_1_ODR_ADDR
,
255 .mask
= ST_ACCEL_1_ODR_MASK
,
256 .value_off
= ST_SENSORS_DEFAULT_POWER_OFF_VALUE
,
259 .addr
= ST_SENSORS_DEFAULT_AXIS_ADDR
,
260 .mask
= ST_SENSORS_DEFAULT_AXIS_MASK
,
263 .addr
= ST_ACCEL_1_FS_ADDR
,
264 .mask
= ST_ACCEL_1_FS_MASK
,
267 .num
= ST_ACCEL_FS_AVL_2G
,
268 .value
= ST_ACCEL_1_FS_AVL_2_VAL
,
269 .gain
= ST_ACCEL_1_FS_AVL_2_GAIN
,
272 .num
= ST_ACCEL_FS_AVL_4G
,
273 .value
= ST_ACCEL_1_FS_AVL_4_VAL
,
274 .gain
= ST_ACCEL_1_FS_AVL_4_GAIN
,
277 .num
= ST_ACCEL_FS_AVL_8G
,
278 .value
= ST_ACCEL_1_FS_AVL_8_VAL
,
279 .gain
= ST_ACCEL_1_FS_AVL_8_GAIN
,
282 .num
= ST_ACCEL_FS_AVL_16G
,
283 .value
= ST_ACCEL_1_FS_AVL_16_VAL
,
284 .gain
= ST_ACCEL_1_FS_AVL_16_GAIN
,
289 .addr
= ST_ACCEL_1_BDU_ADDR
,
290 .mask
= ST_ACCEL_1_BDU_MASK
,
293 .addr
= ST_ACCEL_1_DRDY_IRQ_ADDR
,
294 .mask_int1
= ST_ACCEL_1_DRDY_IRQ_INT1_MASK
,
295 .mask_int2
= ST_ACCEL_1_DRDY_IRQ_INT2_MASK
,
297 .multi_read_bit
= ST_ACCEL_1_MULTIREAD_BIT
,
301 .wai
= ST_ACCEL_2_WAI_EXP
,
302 .wai_addr
= ST_SENSORS_DEFAULT_WAI_ADDRESS
,
303 .sensors_supported
= {
304 [0] = LIS331DLH_ACCEL_DEV_NAME
,
305 [1] = LSM303DL_ACCEL_DEV_NAME
,
306 [2] = LSM303DLH_ACCEL_DEV_NAME
,
307 [3] = LSM303DLM_ACCEL_DEV_NAME
,
309 .ch
= (struct iio_chan_spec
*)st_accel_12bit_channels
,
311 .addr
= ST_ACCEL_2_ODR_ADDR
,
312 .mask
= ST_ACCEL_2_ODR_MASK
,
314 { 50, ST_ACCEL_2_ODR_AVL_50HZ_VAL
, },
315 { 100, ST_ACCEL_2_ODR_AVL_100HZ_VAL
, },
316 { 400, ST_ACCEL_2_ODR_AVL_400HZ_VAL
, },
317 { 1000, ST_ACCEL_2_ODR_AVL_1000HZ_VAL
, },
321 .addr
= ST_ACCEL_2_PW_ADDR
,
322 .mask
= ST_ACCEL_2_PW_MASK
,
323 .value_on
= ST_SENSORS_DEFAULT_POWER_ON_VALUE
,
324 .value_off
= ST_SENSORS_DEFAULT_POWER_OFF_VALUE
,
327 .addr
= ST_SENSORS_DEFAULT_AXIS_ADDR
,
328 .mask
= ST_SENSORS_DEFAULT_AXIS_MASK
,
331 .addr
= ST_ACCEL_2_FS_ADDR
,
332 .mask
= ST_ACCEL_2_FS_MASK
,
335 .num
= ST_ACCEL_FS_AVL_2G
,
336 .value
= ST_ACCEL_2_FS_AVL_2_VAL
,
337 .gain
= ST_ACCEL_2_FS_AVL_2_GAIN
,
340 .num
= ST_ACCEL_FS_AVL_4G
,
341 .value
= ST_ACCEL_2_FS_AVL_4_VAL
,
342 .gain
= ST_ACCEL_2_FS_AVL_4_GAIN
,
345 .num
= ST_ACCEL_FS_AVL_8G
,
346 .value
= ST_ACCEL_2_FS_AVL_8_VAL
,
347 .gain
= ST_ACCEL_2_FS_AVL_8_GAIN
,
352 .addr
= ST_ACCEL_2_BDU_ADDR
,
353 .mask
= ST_ACCEL_2_BDU_MASK
,
356 .addr
= ST_ACCEL_2_DRDY_IRQ_ADDR
,
357 .mask_int1
= ST_ACCEL_2_DRDY_IRQ_INT1_MASK
,
358 .mask_int2
= ST_ACCEL_2_DRDY_IRQ_INT2_MASK
,
360 .multi_read_bit
= ST_ACCEL_2_MULTIREAD_BIT
,
364 .wai
= ST_ACCEL_3_WAI_EXP
,
365 .wai_addr
= ST_SENSORS_DEFAULT_WAI_ADDRESS
,
366 .sensors_supported
= {
367 [0] = LSM330_ACCEL_DEV_NAME
,
369 .ch
= (struct iio_chan_spec
*)st_accel_16bit_channels
,
371 .addr
= ST_ACCEL_3_ODR_ADDR
,
372 .mask
= ST_ACCEL_3_ODR_MASK
,
374 { 3, ST_ACCEL_3_ODR_AVL_3HZ_VAL
},
375 { 6, ST_ACCEL_3_ODR_AVL_6HZ_VAL
, },
376 { 12, ST_ACCEL_3_ODR_AVL_12HZ_VAL
, },
377 { 25, ST_ACCEL_3_ODR_AVL_25HZ_VAL
, },
378 { 50, ST_ACCEL_3_ODR_AVL_50HZ_VAL
, },
379 { 100, ST_ACCEL_3_ODR_AVL_100HZ_VAL
, },
380 { 200, ST_ACCEL_3_ODR_AVL_200HZ_VAL
, },
381 { 400, ST_ACCEL_3_ODR_AVL_400HZ_VAL
, },
382 { 800, ST_ACCEL_3_ODR_AVL_800HZ_VAL
, },
383 { 1600, ST_ACCEL_3_ODR_AVL_1600HZ_VAL
, },
387 .addr
= ST_ACCEL_3_ODR_ADDR
,
388 .mask
= ST_ACCEL_3_ODR_MASK
,
389 .value_off
= ST_SENSORS_DEFAULT_POWER_OFF_VALUE
,
392 .addr
= ST_SENSORS_DEFAULT_AXIS_ADDR
,
393 .mask
= ST_SENSORS_DEFAULT_AXIS_MASK
,
396 .addr
= ST_ACCEL_3_FS_ADDR
,
397 .mask
= ST_ACCEL_3_FS_MASK
,
400 .num
= ST_ACCEL_FS_AVL_2G
,
401 .value
= ST_ACCEL_3_FS_AVL_2_VAL
,
402 .gain
= ST_ACCEL_3_FS_AVL_2_GAIN
,
405 .num
= ST_ACCEL_FS_AVL_4G
,
406 .value
= ST_ACCEL_3_FS_AVL_4_VAL
,
407 .gain
= ST_ACCEL_3_FS_AVL_4_GAIN
,
410 .num
= ST_ACCEL_FS_AVL_6G
,
411 .value
= ST_ACCEL_3_FS_AVL_6_VAL
,
412 .gain
= ST_ACCEL_3_FS_AVL_6_GAIN
,
415 .num
= ST_ACCEL_FS_AVL_8G
,
416 .value
= ST_ACCEL_3_FS_AVL_8_VAL
,
417 .gain
= ST_ACCEL_3_FS_AVL_8_GAIN
,
420 .num
= ST_ACCEL_FS_AVL_16G
,
421 .value
= ST_ACCEL_3_FS_AVL_16_VAL
,
422 .gain
= ST_ACCEL_3_FS_AVL_16_GAIN
,
427 .addr
= ST_ACCEL_3_BDU_ADDR
,
428 .mask
= ST_ACCEL_3_BDU_MASK
,
431 .addr
= ST_ACCEL_3_DRDY_IRQ_ADDR
,
432 .mask_int1
= ST_ACCEL_3_DRDY_IRQ_INT1_MASK
,
433 .mask_int2
= ST_ACCEL_3_DRDY_IRQ_INT2_MASK
,
435 .en_addr
= ST_ACCEL_3_IG1_EN_ADDR
,
436 .en_mask
= ST_ACCEL_3_IG1_EN_MASK
,
439 .multi_read_bit
= ST_ACCEL_3_MULTIREAD_BIT
,
443 .wai
= ST_ACCEL_4_WAI_EXP
,
444 .wai_addr
= ST_SENSORS_DEFAULT_WAI_ADDRESS
,
445 .sensors_supported
= {
446 [0] = LIS3LV02DL_ACCEL_DEV_NAME
,
448 .ch
= (struct iio_chan_spec
*)st_accel_12bit_channels
,
450 .addr
= ST_ACCEL_4_ODR_ADDR
,
451 .mask
= ST_ACCEL_4_ODR_MASK
,
453 { 40, ST_ACCEL_4_ODR_AVL_40HZ_VAL
},
454 { 160, ST_ACCEL_4_ODR_AVL_160HZ_VAL
, },
455 { 640, ST_ACCEL_4_ODR_AVL_640HZ_VAL
, },
456 { 2560, ST_ACCEL_4_ODR_AVL_2560HZ_VAL
, },
460 .addr
= ST_ACCEL_4_PW_ADDR
,
461 .mask
= ST_ACCEL_4_PW_MASK
,
462 .value_on
= ST_SENSORS_DEFAULT_POWER_ON_VALUE
,
463 .value_off
= ST_SENSORS_DEFAULT_POWER_OFF_VALUE
,
466 .addr
= ST_SENSORS_DEFAULT_AXIS_ADDR
,
467 .mask
= ST_SENSORS_DEFAULT_AXIS_MASK
,
470 .addr
= ST_ACCEL_4_FS_ADDR
,
471 .mask
= ST_ACCEL_4_FS_MASK
,
474 .num
= ST_ACCEL_FS_AVL_2G
,
475 .value
= ST_ACCEL_4_FS_AVL_2_VAL
,
476 .gain
= ST_ACCEL_4_FS_AVL_2_GAIN
,
479 .num
= ST_ACCEL_FS_AVL_6G
,
480 .value
= ST_ACCEL_4_FS_AVL_6_VAL
,
481 .gain
= ST_ACCEL_4_FS_AVL_6_GAIN
,
486 .addr
= ST_ACCEL_4_BDU_ADDR
,
487 .mask
= ST_ACCEL_4_BDU_MASK
,
490 .addr
= ST_ACCEL_4_DRDY_IRQ_ADDR
,
491 .mask_int1
= ST_ACCEL_4_DRDY_IRQ_INT1_MASK
,
493 .en_addr
= ST_ACCEL_4_IG1_EN_ADDR
,
494 .en_mask
= ST_ACCEL_4_IG1_EN_MASK
,
497 .multi_read_bit
= ST_ACCEL_4_MULTIREAD_BIT
,
498 .bootime
= 2, /* guess */
501 .wai
= ST_ACCEL_5_WAI_EXP
,
502 .wai_addr
= ST_SENSORS_DEFAULT_WAI_ADDRESS
,
503 .sensors_supported
= {
504 [0] = LIS331DL_ACCEL_DEV_NAME
,
506 .ch
= (struct iio_chan_spec
*)st_accel_8bit_channels
,
508 .addr
= ST_ACCEL_5_ODR_ADDR
,
509 .mask
= ST_ACCEL_5_ODR_MASK
,
511 { 100, ST_ACCEL_5_ODR_AVL_100HZ_VAL
},
512 { 400, ST_ACCEL_5_ODR_AVL_400HZ_VAL
, },
516 .addr
= ST_ACCEL_5_PW_ADDR
,
517 .mask
= ST_ACCEL_5_PW_MASK
,
518 .value_on
= ST_SENSORS_DEFAULT_POWER_ON_VALUE
,
519 .value_off
= ST_SENSORS_DEFAULT_POWER_OFF_VALUE
,
522 .addr
= ST_SENSORS_DEFAULT_AXIS_ADDR
,
523 .mask
= ST_SENSORS_DEFAULT_AXIS_MASK
,
526 .addr
= ST_ACCEL_5_FS_ADDR
,
527 .mask
= ST_ACCEL_5_FS_MASK
,
530 .num
= ST_ACCEL_FS_AVL_2G
,
531 .value
= ST_ACCEL_5_FS_AVL_2_VAL
,
532 .gain
= ST_ACCEL_5_FS_AVL_2_GAIN
,
535 .num
= ST_ACCEL_FS_AVL_8G
,
536 .value
= ST_ACCEL_5_FS_AVL_8_VAL
,
537 .gain
= ST_ACCEL_5_FS_AVL_8_GAIN
,
542 .addr
= ST_ACCEL_5_DRDY_IRQ_ADDR
,
543 .mask_int1
= ST_ACCEL_5_DRDY_IRQ_INT1_MASK
,
544 .mask_int2
= ST_ACCEL_5_DRDY_IRQ_INT2_MASK
,
546 .multi_read_bit
= ST_ACCEL_5_MULTIREAD_BIT
,
547 .bootime
= 2, /* guess */
551 static int st_accel_read_raw(struct iio_dev
*indio_dev
,
552 struct iio_chan_spec
const *ch
, int *val
,
553 int *val2
, long mask
)
556 struct st_sensor_data
*adata
= iio_priv(indio_dev
);
559 case IIO_CHAN_INFO_RAW
:
560 err
= st_sensors_read_info_raw(indio_dev
, ch
, val
);
565 case IIO_CHAN_INFO_SCALE
:
567 *val2
= adata
->current_fullscale
->gain
;
568 return IIO_VAL_INT_PLUS_MICRO
;
569 case IIO_CHAN_INFO_SAMP_FREQ
:
580 static int st_accel_write_raw(struct iio_dev
*indio_dev
,
581 struct iio_chan_spec
const *chan
, int val
, int val2
, long mask
)
586 case IIO_CHAN_INFO_SCALE
:
587 err
= st_sensors_set_fullscale_by_gain(indio_dev
, val2
);
589 case IIO_CHAN_INFO_SAMP_FREQ
:
592 mutex_lock(&indio_dev
->mlock
);
593 err
= st_sensors_set_odr(indio_dev
, val
);
594 mutex_unlock(&indio_dev
->mlock
);
603 static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL();
604 static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_accel_scale_available
);
606 static struct attribute
*st_accel_attributes
[] = {
607 &iio_dev_attr_sampling_frequency_available
.dev_attr
.attr
,
608 &iio_dev_attr_in_accel_scale_available
.dev_attr
.attr
,
612 static const struct attribute_group st_accel_attribute_group
= {
613 .attrs
= st_accel_attributes
,
616 static const struct iio_info accel_info
= {
617 .driver_module
= THIS_MODULE
,
618 .attrs
= &st_accel_attribute_group
,
619 .read_raw
= &st_accel_read_raw
,
620 .write_raw
= &st_accel_write_raw
,
623 #ifdef CONFIG_IIO_TRIGGER
624 static const struct iio_trigger_ops st_accel_trigger_ops
= {
625 .owner
= THIS_MODULE
,
626 .set_trigger_state
= ST_ACCEL_TRIGGER_SET_STATE
,
628 #define ST_ACCEL_TRIGGER_OPS (&st_accel_trigger_ops)
630 #define ST_ACCEL_TRIGGER_OPS NULL
633 int st_accel_common_probe(struct iio_dev
*indio_dev
)
635 struct st_sensor_data
*adata
= iio_priv(indio_dev
);
636 int irq
= adata
->get_irq_data_ready(indio_dev
);
639 indio_dev
->modes
= INDIO_DIRECT_MODE
;
640 indio_dev
->info
= &accel_info
;
641 mutex_init(&adata
->tb
.buf_lock
);
643 st_sensors_power_enable(indio_dev
);
645 err
= st_sensors_check_device_support(indio_dev
,
646 ARRAY_SIZE(st_accel_sensors_settings
),
647 st_accel_sensors_settings
);
651 adata
->num_data_channels
= ST_ACCEL_NUMBER_DATA_CHANNELS
;
652 adata
->multiread_bit
= adata
->sensor_settings
->multi_read_bit
;
653 indio_dev
->channels
= adata
->sensor_settings
->ch
;
654 indio_dev
->num_channels
= ST_SENSORS_NUMBER_ALL_CHANNELS
;
656 adata
->current_fullscale
= (struct st_sensor_fullscale_avl
*)
657 &adata
->sensor_settings
->fs
.fs_avl
[0];
658 adata
->odr
= adata
->sensor_settings
->odr
.odr_avl
[0].hz
;
660 if (!adata
->dev
->platform_data
)
661 adata
->dev
->platform_data
=
662 (struct st_sensors_platform_data
*)&default_accel_pdata
;
664 err
= st_sensors_init_sensor(indio_dev
, adata
->dev
->platform_data
);
668 err
= st_accel_allocate_ring(indio_dev
);
673 err
= st_sensors_allocate_trigger(indio_dev
,
674 ST_ACCEL_TRIGGER_OPS
);
676 goto st_accel_probe_trigger_error
;
679 err
= iio_device_register(indio_dev
);
681 goto st_accel_device_register_error
;
683 dev_info(&indio_dev
->dev
, "registered accelerometer %s\n",
688 st_accel_device_register_error
:
690 st_sensors_deallocate_trigger(indio_dev
);
691 st_accel_probe_trigger_error
:
692 st_accel_deallocate_ring(indio_dev
);
696 EXPORT_SYMBOL(st_accel_common_probe
);
698 void st_accel_common_remove(struct iio_dev
*indio_dev
)
700 struct st_sensor_data
*adata
= iio_priv(indio_dev
);
702 st_sensors_power_disable(indio_dev
);
704 iio_device_unregister(indio_dev
);
705 if (adata
->get_irq_data_ready(indio_dev
) > 0)
706 st_sensors_deallocate_trigger(indio_dev
);
708 st_accel_deallocate_ring(indio_dev
);
710 EXPORT_SYMBOL(st_accel_common_remove
);
712 MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>");
713 MODULE_DESCRIPTION("STMicroelectronics accelerometers driver");
714 MODULE_LICENSE("GPL v2");