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7be56a8f DC |
1 | /* |
2 | * STMicroelectronics gyroscopes 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/delay.h> | |
22 | #include <linux/iio/iio.h> | |
23 | #include <linux/iio/sysfs.h> | |
8ce4a56a | 24 | #include <linux/iio/trigger.h> |
7be56a8f DC |
25 | #include <linux/iio/buffer.h> |
26 | ||
27 | #include <linux/iio/common/st_sensors.h> | |
28 | #include "st_gyro.h" | |
29 | ||
607a568a DC |
30 | #define ST_GYRO_NUMBER_DATA_CHANNELS 3 |
31 | ||
7be56a8f DC |
32 | /* DEFAULT VALUE FOR SENSORS */ |
33 | #define ST_GYRO_DEFAULT_OUT_X_L_ADDR 0x28 | |
34 | #define ST_GYRO_DEFAULT_OUT_Y_L_ADDR 0x2a | |
35 | #define ST_GYRO_DEFAULT_OUT_Z_L_ADDR 0x2c | |
36 | ||
37 | /* FULLSCALE */ | |
38 | #define ST_GYRO_FS_AVL_250DPS 250 | |
39 | #define ST_GYRO_FS_AVL_500DPS 500 | |
40 | #define ST_GYRO_FS_AVL_2000DPS 2000 | |
41 | ||
42 | /* CUSTOM VALUES FOR SENSOR 1 */ | |
43 | #define ST_GYRO_1_WAI_EXP 0xd3 | |
44 | #define ST_GYRO_1_ODR_ADDR 0x20 | |
45 | #define ST_GYRO_1_ODR_MASK 0xc0 | |
46 | #define ST_GYRO_1_ODR_AVL_100HZ_VAL 0x00 | |
47 | #define ST_GYRO_1_ODR_AVL_200HZ_VAL 0x01 | |
48 | #define ST_GYRO_1_ODR_AVL_400HZ_VAL 0x02 | |
49 | #define ST_GYRO_1_ODR_AVL_800HZ_VAL 0x03 | |
50 | #define ST_GYRO_1_PW_ADDR 0x20 | |
51 | #define ST_GYRO_1_PW_MASK 0x08 | |
52 | #define ST_GYRO_1_FS_ADDR 0x23 | |
53 | #define ST_GYRO_1_FS_MASK 0x30 | |
54 | #define ST_GYRO_1_FS_AVL_250_VAL 0x00 | |
55 | #define ST_GYRO_1_FS_AVL_500_VAL 0x01 | |
56 | #define ST_GYRO_1_FS_AVL_2000_VAL 0x02 | |
57 | #define ST_GYRO_1_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750) | |
58 | #define ST_GYRO_1_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500) | |
59 | #define ST_GYRO_1_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000) | |
60 | #define ST_GYRO_1_BDU_ADDR 0x23 | |
61 | #define ST_GYRO_1_BDU_MASK 0x80 | |
62 | #define ST_GYRO_1_DRDY_IRQ_ADDR 0x22 | |
23cde4d6 | 63 | #define ST_GYRO_1_DRDY_IRQ_INT2_MASK 0x08 |
7be56a8f DC |
64 | #define ST_GYRO_1_MULTIREAD_BIT true |
65 | ||
66 | /* CUSTOM VALUES FOR SENSOR 2 */ | |
67 | #define ST_GYRO_2_WAI_EXP 0xd4 | |
68 | #define ST_GYRO_2_ODR_ADDR 0x20 | |
69 | #define ST_GYRO_2_ODR_MASK 0xc0 | |
70 | #define ST_GYRO_2_ODR_AVL_95HZ_VAL 0x00 | |
71 | #define ST_GYRO_2_ODR_AVL_190HZ_VAL 0x01 | |
72 | #define ST_GYRO_2_ODR_AVL_380HZ_VAL 0x02 | |
73 | #define ST_GYRO_2_ODR_AVL_760HZ_VAL 0x03 | |
74 | #define ST_GYRO_2_PW_ADDR 0x20 | |
75 | #define ST_GYRO_2_PW_MASK 0x08 | |
76 | #define ST_GYRO_2_FS_ADDR 0x23 | |
77 | #define ST_GYRO_2_FS_MASK 0x30 | |
78 | #define ST_GYRO_2_FS_AVL_250_VAL 0x00 | |
79 | #define ST_GYRO_2_FS_AVL_500_VAL 0x01 | |
80 | #define ST_GYRO_2_FS_AVL_2000_VAL 0x02 | |
81 | #define ST_GYRO_2_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750) | |
82 | #define ST_GYRO_2_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500) | |
83 | #define ST_GYRO_2_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000) | |
84 | #define ST_GYRO_2_BDU_ADDR 0x23 | |
85 | #define ST_GYRO_2_BDU_MASK 0x80 | |
86 | #define ST_GYRO_2_DRDY_IRQ_ADDR 0x22 | |
23cde4d6 | 87 | #define ST_GYRO_2_DRDY_IRQ_INT2_MASK 0x08 |
7be56a8f DC |
88 | #define ST_GYRO_2_MULTIREAD_BIT true |
89 | ||
9444a300 RD |
90 | /* CUSTOM VALUES FOR SENSOR 3 */ |
91 | #define ST_GYRO_3_WAI_EXP 0xd7 | |
92 | #define ST_GYRO_3_ODR_ADDR 0x20 | |
93 | #define ST_GYRO_3_ODR_MASK 0xc0 | |
94 | #define ST_GYRO_3_ODR_AVL_95HZ_VAL 0x00 | |
95 | #define ST_GYRO_3_ODR_AVL_190HZ_VAL 0x01 | |
96 | #define ST_GYRO_3_ODR_AVL_380HZ_VAL 0x02 | |
97 | #define ST_GYRO_3_ODR_AVL_760HZ_VAL 0x03 | |
98 | #define ST_GYRO_3_PW_ADDR 0x20 | |
99 | #define ST_GYRO_3_PW_MASK 0x08 | |
100 | #define ST_GYRO_3_FS_ADDR 0x23 | |
101 | #define ST_GYRO_3_FS_MASK 0x30 | |
102 | #define ST_GYRO_3_FS_AVL_250_VAL 0x00 | |
103 | #define ST_GYRO_3_FS_AVL_500_VAL 0x01 | |
104 | #define ST_GYRO_3_FS_AVL_2000_VAL 0x02 | |
105 | #define ST_GYRO_3_FS_AVL_250_GAIN IIO_DEGREE_TO_RAD(8750) | |
106 | #define ST_GYRO_3_FS_AVL_500_GAIN IIO_DEGREE_TO_RAD(17500) | |
107 | #define ST_GYRO_3_FS_AVL_2000_GAIN IIO_DEGREE_TO_RAD(70000) | |
108 | #define ST_GYRO_3_BDU_ADDR 0x23 | |
109 | #define ST_GYRO_3_BDU_MASK 0x80 | |
110 | #define ST_GYRO_3_DRDY_IRQ_ADDR 0x22 | |
111 | #define ST_GYRO_3_DRDY_IRQ_INT2_MASK 0x08 | |
112 | #define ST_GYRO_3_MULTIREAD_BIT true | |
113 | ||
114 | ||
7be56a8f | 115 | static const struct iio_chan_spec st_gyro_16bit_channels[] = { |
762011d6 DC |
116 | ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL, |
117 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), | |
118 | ST_SENSORS_SCAN_X, 1, IIO_MOD_X, 's', IIO_LE, 16, 16, | |
119 | ST_GYRO_DEFAULT_OUT_X_L_ADDR), | |
120 | ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL, | |
121 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), | |
122 | ST_SENSORS_SCAN_Y, 1, IIO_MOD_Y, 's', IIO_LE, 16, 16, | |
123 | ST_GYRO_DEFAULT_OUT_Y_L_ADDR), | |
124 | ST_SENSORS_LSM_CHANNELS(IIO_ANGL_VEL, | |
125 | BIT(IIO_CHAN_INFO_RAW) | BIT(IIO_CHAN_INFO_SCALE), | |
126 | ST_SENSORS_SCAN_Z, 1, IIO_MOD_Z, 's', IIO_LE, 16, 16, | |
127 | ST_GYRO_DEFAULT_OUT_Z_L_ADDR), | |
7be56a8f DC |
128 | IIO_CHAN_SOFT_TIMESTAMP(3) |
129 | }; | |
130 | ||
a7ee8839 | 131 | static const struct st_sensor_settings st_gyro_sensors_settings[] = { |
7be56a8f DC |
132 | { |
133 | .wai = ST_GYRO_1_WAI_EXP, | |
bc27381e | 134 | .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
7be56a8f DC |
135 | .sensors_supported = { |
136 | [0] = L3G4200D_GYRO_DEV_NAME, | |
137 | [1] = LSM330DL_GYRO_DEV_NAME, | |
138 | }, | |
139 | .ch = (struct iio_chan_spec *)st_gyro_16bit_channels, | |
140 | .odr = { | |
141 | .addr = ST_GYRO_1_ODR_ADDR, | |
142 | .mask = ST_GYRO_1_ODR_MASK, | |
143 | .odr_avl = { | |
144 | { 100, ST_GYRO_1_ODR_AVL_100HZ_VAL, }, | |
145 | { 200, ST_GYRO_1_ODR_AVL_200HZ_VAL, }, | |
146 | { 400, ST_GYRO_1_ODR_AVL_400HZ_VAL, }, | |
147 | { 800, ST_GYRO_1_ODR_AVL_800HZ_VAL, }, | |
148 | }, | |
149 | }, | |
150 | .pw = { | |
151 | .addr = ST_GYRO_1_PW_ADDR, | |
152 | .mask = ST_GYRO_1_PW_MASK, | |
153 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, | |
154 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, | |
155 | }, | |
156 | .enable_axis = { | |
157 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, | |
158 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, | |
159 | }, | |
160 | .fs = { | |
161 | .addr = ST_GYRO_1_FS_ADDR, | |
162 | .mask = ST_GYRO_1_FS_MASK, | |
163 | .fs_avl = { | |
164 | [0] = { | |
165 | .num = ST_GYRO_FS_AVL_250DPS, | |
166 | .value = ST_GYRO_1_FS_AVL_250_VAL, | |
167 | .gain = ST_GYRO_1_FS_AVL_250_GAIN, | |
168 | }, | |
169 | [1] = { | |
170 | .num = ST_GYRO_FS_AVL_500DPS, | |
171 | .value = ST_GYRO_1_FS_AVL_500_VAL, | |
172 | .gain = ST_GYRO_1_FS_AVL_500_GAIN, | |
173 | }, | |
174 | [2] = { | |
175 | .num = ST_GYRO_FS_AVL_2000DPS, | |
176 | .value = ST_GYRO_1_FS_AVL_2000_VAL, | |
177 | .gain = ST_GYRO_1_FS_AVL_2000_GAIN, | |
178 | }, | |
179 | }, | |
180 | }, | |
181 | .bdu = { | |
182 | .addr = ST_GYRO_1_BDU_ADDR, | |
183 | .mask = ST_GYRO_1_BDU_MASK, | |
184 | }, | |
185 | .drdy_irq = { | |
186 | .addr = ST_GYRO_1_DRDY_IRQ_ADDR, | |
23cde4d6 | 187 | .mask_int2 = ST_GYRO_1_DRDY_IRQ_INT2_MASK, |
a9fd053b LW |
188 | /* |
189 | * The sensor has IHL (active low) and open | |
190 | * drain settings, but only for INT1 and not | |
191 | * for the DRDY line on INT2. | |
192 | */ | |
97865fe4 | 193 | .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
7be56a8f DC |
194 | }, |
195 | .multi_read_bit = ST_GYRO_1_MULTIREAD_BIT, | |
196 | .bootime = 2, | |
197 | }, | |
198 | { | |
199 | .wai = ST_GYRO_2_WAI_EXP, | |
bc27381e | 200 | .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
7be56a8f DC |
201 | .sensors_supported = { |
202 | [0] = L3GD20_GYRO_DEV_NAME, | |
a0657716 DC |
203 | [1] = LSM330D_GYRO_DEV_NAME, |
204 | [2] = LSM330DLC_GYRO_DEV_NAME, | |
205 | [3] = L3G4IS_GYRO_DEV_NAME, | |
206 | [4] = LSM330_GYRO_DEV_NAME, | |
41c128cb | 207 | [5] = LSM9DS0_GYRO_DEV_NAME, |
7be56a8f DC |
208 | }, |
209 | .ch = (struct iio_chan_spec *)st_gyro_16bit_channels, | |
210 | .odr = { | |
211 | .addr = ST_GYRO_2_ODR_ADDR, | |
212 | .mask = ST_GYRO_2_ODR_MASK, | |
213 | .odr_avl = { | |
214 | { 95, ST_GYRO_2_ODR_AVL_95HZ_VAL, }, | |
215 | { 190, ST_GYRO_2_ODR_AVL_190HZ_VAL, }, | |
216 | { 380, ST_GYRO_2_ODR_AVL_380HZ_VAL, }, | |
217 | { 760, ST_GYRO_2_ODR_AVL_760HZ_VAL, }, | |
218 | }, | |
219 | }, | |
220 | .pw = { | |
221 | .addr = ST_GYRO_2_PW_ADDR, | |
222 | .mask = ST_GYRO_2_PW_MASK, | |
223 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, | |
224 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, | |
225 | }, | |
226 | .enable_axis = { | |
227 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, | |
228 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, | |
229 | }, | |
230 | .fs = { | |
231 | .addr = ST_GYRO_2_FS_ADDR, | |
232 | .mask = ST_GYRO_2_FS_MASK, | |
233 | .fs_avl = { | |
234 | [0] = { | |
235 | .num = ST_GYRO_FS_AVL_250DPS, | |
236 | .value = ST_GYRO_2_FS_AVL_250_VAL, | |
237 | .gain = ST_GYRO_2_FS_AVL_250_GAIN, | |
238 | }, | |
239 | [1] = { | |
240 | .num = ST_GYRO_FS_AVL_500DPS, | |
241 | .value = ST_GYRO_2_FS_AVL_500_VAL, | |
242 | .gain = ST_GYRO_2_FS_AVL_500_GAIN, | |
243 | }, | |
244 | [2] = { | |
245 | .num = ST_GYRO_FS_AVL_2000DPS, | |
246 | .value = ST_GYRO_2_FS_AVL_2000_VAL, | |
247 | .gain = ST_GYRO_2_FS_AVL_2000_GAIN, | |
248 | }, | |
249 | }, | |
250 | }, | |
251 | .bdu = { | |
252 | .addr = ST_GYRO_2_BDU_ADDR, | |
253 | .mask = ST_GYRO_2_BDU_MASK, | |
254 | }, | |
255 | .drdy_irq = { | |
256 | .addr = ST_GYRO_2_DRDY_IRQ_ADDR, | |
23cde4d6 | 257 | .mask_int2 = ST_GYRO_2_DRDY_IRQ_INT2_MASK, |
a9fd053b LW |
258 | /* |
259 | * The sensor has IHL (active low) and open | |
260 | * drain settings, but only for INT1 and not | |
261 | * for the DRDY line on INT2. | |
262 | */ | |
97865fe4 | 263 | .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
7be56a8f DC |
264 | }, |
265 | .multi_read_bit = ST_GYRO_2_MULTIREAD_BIT, | |
266 | .bootime = 2, | |
267 | }, | |
9444a300 RD |
268 | { |
269 | .wai = ST_GYRO_3_WAI_EXP, | |
bc27381e | 270 | .wai_addr = ST_SENSORS_DEFAULT_WAI_ADDRESS, |
9444a300 RD |
271 | .sensors_supported = { |
272 | [0] = L3GD20_GYRO_DEV_NAME, | |
273 | }, | |
274 | .ch = (struct iio_chan_spec *)st_gyro_16bit_channels, | |
275 | .odr = { | |
276 | .addr = ST_GYRO_3_ODR_ADDR, | |
277 | .mask = ST_GYRO_3_ODR_MASK, | |
278 | .odr_avl = { | |
279 | { 95, ST_GYRO_3_ODR_AVL_95HZ_VAL, }, | |
280 | { 190, ST_GYRO_3_ODR_AVL_190HZ_VAL, }, | |
281 | { 380, ST_GYRO_3_ODR_AVL_380HZ_VAL, }, | |
282 | { 760, ST_GYRO_3_ODR_AVL_760HZ_VAL, }, | |
283 | }, | |
284 | }, | |
285 | .pw = { | |
286 | .addr = ST_GYRO_3_PW_ADDR, | |
287 | .mask = ST_GYRO_3_PW_MASK, | |
288 | .value_on = ST_SENSORS_DEFAULT_POWER_ON_VALUE, | |
289 | .value_off = ST_SENSORS_DEFAULT_POWER_OFF_VALUE, | |
290 | }, | |
291 | .enable_axis = { | |
292 | .addr = ST_SENSORS_DEFAULT_AXIS_ADDR, | |
293 | .mask = ST_SENSORS_DEFAULT_AXIS_MASK, | |
294 | }, | |
295 | .fs = { | |
296 | .addr = ST_GYRO_3_FS_ADDR, | |
297 | .mask = ST_GYRO_3_FS_MASK, | |
298 | .fs_avl = { | |
299 | [0] = { | |
300 | .num = ST_GYRO_FS_AVL_250DPS, | |
301 | .value = ST_GYRO_3_FS_AVL_250_VAL, | |
302 | .gain = ST_GYRO_3_FS_AVL_250_GAIN, | |
303 | }, | |
304 | [1] = { | |
305 | .num = ST_GYRO_FS_AVL_500DPS, | |
306 | .value = ST_GYRO_3_FS_AVL_500_VAL, | |
307 | .gain = ST_GYRO_3_FS_AVL_500_GAIN, | |
308 | }, | |
309 | [2] = { | |
310 | .num = ST_GYRO_FS_AVL_2000DPS, | |
311 | .value = ST_GYRO_3_FS_AVL_2000_VAL, | |
312 | .gain = ST_GYRO_3_FS_AVL_2000_GAIN, | |
313 | }, | |
314 | }, | |
315 | }, | |
316 | .bdu = { | |
317 | .addr = ST_GYRO_3_BDU_ADDR, | |
318 | .mask = ST_GYRO_3_BDU_MASK, | |
319 | }, | |
320 | .drdy_irq = { | |
321 | .addr = ST_GYRO_3_DRDY_IRQ_ADDR, | |
322 | .mask_int2 = ST_GYRO_3_DRDY_IRQ_INT2_MASK, | |
a9fd053b LW |
323 | /* |
324 | * The sensor has IHL (active low) and open | |
325 | * drain settings, but only for INT1 and not | |
326 | * for the DRDY line on INT2. | |
327 | */ | |
97865fe4 | 328 | .addr_stat_drdy = ST_SENSORS_DEFAULT_STAT_ADDR, |
9444a300 RD |
329 | }, |
330 | .multi_read_bit = ST_GYRO_3_MULTIREAD_BIT, | |
331 | .bootime = 2, | |
332 | }, | |
7be56a8f DC |
333 | }; |
334 | ||
335 | static int st_gyro_read_raw(struct iio_dev *indio_dev, | |
336 | struct iio_chan_spec const *ch, int *val, | |
337 | int *val2, long mask) | |
338 | { | |
339 | int err; | |
340 | struct st_sensor_data *gdata = iio_priv(indio_dev); | |
341 | ||
342 | switch (mask) { | |
343 | case IIO_CHAN_INFO_RAW: | |
344 | err = st_sensors_read_info_raw(indio_dev, ch, val); | |
345 | if (err < 0) | |
346 | goto read_error; | |
347 | ||
348 | return IIO_VAL_INT; | |
349 | case IIO_CHAN_INFO_SCALE: | |
350 | *val = 0; | |
351 | *val2 = gdata->current_fullscale->gain; | |
352 | return IIO_VAL_INT_PLUS_MICRO; | |
2d239c9e JC |
353 | case IIO_CHAN_INFO_SAMP_FREQ: |
354 | *val = gdata->odr; | |
355 | return IIO_VAL_INT; | |
7be56a8f DC |
356 | default: |
357 | return -EINVAL; | |
358 | } | |
359 | ||
360 | read_error: | |
361 | return err; | |
362 | } | |
363 | ||
364 | static int st_gyro_write_raw(struct iio_dev *indio_dev, | |
365 | struct iio_chan_spec const *chan, int val, int val2, long mask) | |
366 | { | |
367 | int err; | |
368 | ||
369 | switch (mask) { | |
370 | case IIO_CHAN_INFO_SCALE: | |
371 | err = st_sensors_set_fullscale_by_gain(indio_dev, val2); | |
372 | break; | |
2d239c9e JC |
373 | case IIO_CHAN_INFO_SAMP_FREQ: |
374 | if (val2) | |
375 | return -EINVAL; | |
376 | mutex_lock(&indio_dev->mlock); | |
377 | err = st_sensors_set_odr(indio_dev, val); | |
378 | mutex_unlock(&indio_dev->mlock); | |
379 | return err; | |
7be56a8f DC |
380 | default: |
381 | err = -EINVAL; | |
382 | } | |
383 | ||
384 | return err; | |
385 | } | |
386 | ||
7be56a8f DC |
387 | static ST_SENSORS_DEV_ATTR_SAMP_FREQ_AVAIL(); |
388 | static ST_SENSORS_DEV_ATTR_SCALE_AVAIL(in_anglvel_scale_available); | |
389 | ||
390 | static struct attribute *st_gyro_attributes[] = { | |
391 | &iio_dev_attr_sampling_frequency_available.dev_attr.attr, | |
392 | &iio_dev_attr_in_anglvel_scale_available.dev_attr.attr, | |
7be56a8f DC |
393 | NULL, |
394 | }; | |
395 | ||
396 | static const struct attribute_group st_gyro_attribute_group = { | |
397 | .attrs = st_gyro_attributes, | |
398 | }; | |
399 | ||
400 | static const struct iio_info gyro_info = { | |
401 | .driver_module = THIS_MODULE, | |
402 | .attrs = &st_gyro_attribute_group, | |
403 | .read_raw = &st_gyro_read_raw, | |
404 | .write_raw = &st_gyro_write_raw, | |
a0175b9c | 405 | .debugfs_reg_access = &st_sensors_debugfs_reg_access, |
7be56a8f DC |
406 | }; |
407 | ||
8ce4a56a | 408 | #ifdef CONFIG_IIO_TRIGGER |
7be56a8f DC |
409 | static const struct iio_trigger_ops st_gyro_trigger_ops = { |
410 | .owner = THIS_MODULE, | |
411 | .set_trigger_state = ST_GYRO_TRIGGER_SET_STATE, | |
65925b65 | 412 | .validate_device = st_sensors_validate_device, |
7be56a8f | 413 | }; |
8ce4a56a JC |
414 | #define ST_GYRO_TRIGGER_OPS (&st_gyro_trigger_ops) |
415 | #else | |
416 | #define ST_GYRO_TRIGGER_OPS NULL | |
417 | #endif | |
7be56a8f | 418 | |
ef67b341 | 419 | int st_gyro_common_probe(struct iio_dev *indio_dev) |
7be56a8f | 420 | { |
7be56a8f | 421 | struct st_sensor_data *gdata = iio_priv(indio_dev); |
f01a140a LJ |
422 | int irq = gdata->get_irq_data_ready(indio_dev); |
423 | int err; | |
7be56a8f DC |
424 | |
425 | indio_dev->modes = INDIO_DIRECT_MODE; | |
426 | indio_dev->info = &gyro_info; | |
8e71c04f | 427 | mutex_init(&gdata->tb.buf_lock); |
7be56a8f | 428 | |
ea7e586b LW |
429 | st_sensors_power_enable(indio_dev); |
430 | ||
7be56a8f | 431 | err = st_sensors_check_device_support(indio_dev, |
a7ee8839 DC |
432 | ARRAY_SIZE(st_gyro_sensors_settings), |
433 | st_gyro_sensors_settings); | |
7be56a8f | 434 | if (err < 0) |
f01a140a | 435 | return err; |
7be56a8f | 436 | |
607a568a | 437 | gdata->num_data_channels = ST_GYRO_NUMBER_DATA_CHANNELS; |
a7ee8839 DC |
438 | gdata->multiread_bit = gdata->sensor_settings->multi_read_bit; |
439 | indio_dev->channels = gdata->sensor_settings->ch; | |
7be56a8f DC |
440 | indio_dev->num_channels = ST_SENSORS_NUMBER_ALL_CHANNELS; |
441 | ||
442 | gdata->current_fullscale = (struct st_sensor_fullscale_avl *) | |
a7ee8839 DC |
443 | &gdata->sensor_settings->fs.fs_avl[0]; |
444 | gdata->odr = gdata->sensor_settings->odr.odr_avl[0].hz; | |
7be56a8f | 445 | |
ef67b341 DC |
446 | err = st_sensors_init_sensor(indio_dev, |
447 | (struct st_sensors_platform_data *)&gyro_pdata); | |
7be56a8f | 448 | if (err < 0) |
f01a140a | 449 | return err; |
7be56a8f | 450 | |
fb4ea1f8 DC |
451 | err = st_gyro_allocate_ring(indio_dev); |
452 | if (err < 0) | |
453 | return err; | |
7be56a8f | 454 | |
fb4ea1f8 | 455 | if (irq > 0) { |
7be56a8f | 456 | err = st_sensors_allocate_trigger(indio_dev, |
8ce4a56a | 457 | ST_GYRO_TRIGGER_OPS); |
7be56a8f DC |
458 | if (err < 0) |
459 | goto st_gyro_probe_trigger_error; | |
460 | } | |
461 | ||
462 | err = iio_device_register(indio_dev); | |
463 | if (err) | |
464 | goto st_gyro_device_register_error; | |
465 | ||
4f544ced LW |
466 | dev_info(&indio_dev->dev, "registered gyroscope %s\n", |
467 | indio_dev->name); | |
468 | ||
f01a140a | 469 | return 0; |
7be56a8f DC |
470 | |
471 | st_gyro_device_register_error: | |
f01a140a | 472 | if (irq > 0) |
7be56a8f DC |
473 | st_sensors_deallocate_trigger(indio_dev); |
474 | st_gyro_probe_trigger_error: | |
fb4ea1f8 | 475 | st_gyro_deallocate_ring(indio_dev); |
f01a140a | 476 | |
7be56a8f DC |
477 | return err; |
478 | } | |
479 | EXPORT_SYMBOL(st_gyro_common_probe); | |
480 | ||
481 | void st_gyro_common_remove(struct iio_dev *indio_dev) | |
482 | { | |
483 | struct st_sensor_data *gdata = iio_priv(indio_dev); | |
484 | ||
ea7e586b LW |
485 | st_sensors_power_disable(indio_dev); |
486 | ||
7be56a8f | 487 | iio_device_unregister(indio_dev); |
fb4ea1f8 | 488 | if (gdata->get_irq_data_ready(indio_dev) > 0) |
7be56a8f | 489 | st_sensors_deallocate_trigger(indio_dev); |
fb4ea1f8 DC |
490 | |
491 | st_gyro_deallocate_ring(indio_dev); | |
7be56a8f DC |
492 | } |
493 | EXPORT_SYMBOL(st_gyro_common_remove); | |
494 | ||
495 | MODULE_AUTHOR("Denis Ciocca <denis.ciocca@st.com>"); | |
496 | MODULE_DESCRIPTION("STMicroelectronics gyroscopes driver"); | |
497 | MODULE_LICENSE("GPL v2"); |