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22b46c45 SP |
1 | /* |
2 | * BMG160 Gyro Sensor driver | |
3 | * Copyright (c) 2014, Intel Corporation. | |
4 | * | |
5 | * This program is free software; you can redistribute it and/or modify it | |
6 | * under the terms and conditions of the GNU General Public License, | |
7 | * version 2, as published by the Free Software Foundation. | |
8 | * | |
9 | * This program is distributed in the hope it will be useful, but WITHOUT | |
10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
12 | * more details. | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/i2c.h> | |
17 | #include <linux/interrupt.h> | |
18 | #include <linux/delay.h> | |
19 | #include <linux/slab.h> | |
20 | #include <linux/acpi.h> | |
21 | #include <linux/gpio/consumer.h> | |
22 | #include <linux/pm.h> | |
23 | #include <linux/pm_runtime.h> | |
24 | #include <linux/iio/iio.h> | |
25 | #include <linux/iio/sysfs.h> | |
26 | #include <linux/iio/buffer.h> | |
27 | #include <linux/iio/trigger.h> | |
28 | #include <linux/iio/events.h> | |
29 | #include <linux/iio/trigger_consumer.h> | |
30 | #include <linux/iio/triggered_buffer.h> | |
31 | ||
32 | #define BMG160_DRV_NAME "bmg160" | |
33 | #define BMG160_IRQ_NAME "bmg160_event" | |
34 | #define BMG160_GPIO_NAME "gpio_int" | |
35 | ||
36 | #define BMG160_REG_CHIP_ID 0x00 | |
37 | #define BMG160_CHIP_ID_VAL 0x0F | |
38 | ||
39 | #define BMG160_REG_PMU_LPW 0x11 | |
40 | #define BMG160_MODE_NORMAL 0x00 | |
41 | #define BMG160_MODE_DEEP_SUSPEND 0x20 | |
42 | #define BMG160_MODE_SUSPEND 0x80 | |
43 | ||
44 | #define BMG160_REG_RANGE 0x0F | |
45 | ||
46 | #define BMG160_RANGE_2000DPS 0 | |
47 | #define BMG160_RANGE_1000DPS 1 | |
48 | #define BMG160_RANGE_500DPS 2 | |
49 | #define BMG160_RANGE_250DPS 3 | |
50 | #define BMG160_RANGE_125DPS 4 | |
51 | ||
52 | #define BMG160_REG_PMU_BW 0x10 | |
53 | #define BMG160_NO_FILTER 0 | |
54 | #define BMG160_DEF_BW 100 | |
55 | ||
56 | #define BMG160_REG_INT_MAP_0 0x17 | |
57 | #define BMG160_INT_MAP_0_BIT_ANY BIT(1) | |
58 | ||
59 | #define BMG160_REG_INT_MAP_1 0x18 | |
60 | #define BMG160_INT_MAP_1_BIT_NEW_DATA BIT(0) | |
61 | ||
62 | #define BMG160_REG_INT_RST_LATCH 0x21 | |
63 | #define BMG160_INT_MODE_LATCH_RESET 0x80 | |
64 | #define BMG160_INT_MODE_LATCH_INT 0x0F | |
65 | #define BMG160_INT_MODE_NON_LATCH_INT 0x00 | |
66 | ||
67 | #define BMG160_REG_INT_EN_0 0x15 | |
68 | #define BMG160_DATA_ENABLE_INT BIT(7) | |
69 | ||
5af6b307 SP |
70 | #define BMG160_REG_INT_EN_1 0x16 |
71 | #define BMG160_INT1_BIT_OD BIT(1) | |
72 | ||
22b46c45 SP |
73 | #define BMG160_REG_XOUT_L 0x02 |
74 | #define BMG160_AXIS_TO_REG(axis) (BMG160_REG_XOUT_L + (axis * 2)) | |
75 | ||
76 | #define BMG160_REG_SLOPE_THRES 0x1B | |
77 | #define BMG160_SLOPE_THRES_MASK 0x0F | |
78 | ||
79 | #define BMG160_REG_MOTION_INTR 0x1C | |
80 | #define BMG160_INT_MOTION_X BIT(0) | |
81 | #define BMG160_INT_MOTION_Y BIT(1) | |
82 | #define BMG160_INT_MOTION_Z BIT(2) | |
83 | #define BMG160_ANY_DUR_MASK 0x30 | |
84 | #define BMG160_ANY_DUR_SHIFT 4 | |
85 | ||
86 | #define BMG160_REG_INT_STATUS_2 0x0B | |
87 | #define BMG160_ANY_MOTION_MASK 0x07 | |
cb80f6a3 SP |
88 | #define BMG160_ANY_MOTION_BIT_X BIT(0) |
89 | #define BMG160_ANY_MOTION_BIT_Y BIT(1) | |
90 | #define BMG160_ANY_MOTION_BIT_Z BIT(2) | |
22b46c45 SP |
91 | |
92 | #define BMG160_REG_TEMP 0x08 | |
93 | #define BMG160_TEMP_CENTER_VAL 23 | |
94 | ||
95 | #define BMG160_MAX_STARTUP_TIME_MS 80 | |
96 | ||
97 | #define BMG160_AUTO_SUSPEND_DELAY_MS 2000 | |
98 | ||
99 | struct bmg160_data { | |
100 | struct i2c_client *client; | |
101 | struct iio_trigger *dready_trig; | |
102 | struct iio_trigger *motion_trig; | |
103 | struct mutex mutex; | |
104 | s16 buffer[8]; | |
105 | u8 bw_bits; | |
106 | u32 dps_range; | |
107 | int ev_enable_state; | |
108 | int slope_thres; | |
109 | bool dready_trigger_on; | |
110 | bool motion_trigger_on; | |
111 | int64_t timestamp; | |
112 | }; | |
113 | ||
114 | enum bmg160_axis { | |
115 | AXIS_X, | |
116 | AXIS_Y, | |
117 | AXIS_Z, | |
118 | }; | |
119 | ||
120 | static const struct { | |
121 | int val; | |
122 | int bw_bits; | |
123 | } bmg160_samp_freq_table[] = { {100, 0x07}, | |
124 | {200, 0x06}, | |
125 | {400, 0x03}, | |
126 | {1000, 0x02}, | |
127 | {2000, 0x01} }; | |
128 | ||
129 | static const struct { | |
130 | int scale; | |
131 | int dps_range; | |
132 | } bmg160_scale_table[] = { { 1065, BMG160_RANGE_2000DPS}, | |
133 | { 532, BMG160_RANGE_1000DPS}, | |
134 | { 266, BMG160_RANGE_500DPS}, | |
135 | { 133, BMG160_RANGE_250DPS}, | |
136 | { 66, BMG160_RANGE_125DPS} }; | |
137 | ||
138 | static int bmg160_set_mode(struct bmg160_data *data, u8 mode) | |
139 | { | |
140 | int ret; | |
141 | ||
142 | ret = i2c_smbus_write_byte_data(data->client, | |
143 | BMG160_REG_PMU_LPW, mode); | |
144 | if (ret < 0) { | |
145 | dev_err(&data->client->dev, "Error writing reg_pmu_lpw\n"); | |
146 | return ret; | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
152 | static int bmg160_convert_freq_to_bit(int val) | |
153 | { | |
154 | int i; | |
155 | ||
156 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { | |
157 | if (bmg160_samp_freq_table[i].val == val) | |
158 | return bmg160_samp_freq_table[i].bw_bits; | |
159 | } | |
160 | ||
161 | return -EINVAL; | |
162 | } | |
163 | ||
164 | static int bmg160_set_bw(struct bmg160_data *data, int val) | |
165 | { | |
166 | int ret; | |
167 | int bw_bits; | |
168 | ||
169 | bw_bits = bmg160_convert_freq_to_bit(val); | |
170 | if (bw_bits < 0) | |
171 | return bw_bits; | |
172 | ||
173 | ret = i2c_smbus_write_byte_data(data->client, BMG160_REG_PMU_BW, | |
174 | bw_bits); | |
175 | if (ret < 0) { | |
176 | dev_err(&data->client->dev, "Error writing reg_pmu_bw\n"); | |
177 | return ret; | |
178 | } | |
179 | ||
180 | data->bw_bits = bw_bits; | |
181 | ||
182 | return 0; | |
183 | } | |
184 | ||
185 | static int bmg160_chip_init(struct bmg160_data *data) | |
186 | { | |
187 | int ret; | |
188 | ||
189 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_CHIP_ID); | |
190 | if (ret < 0) { | |
191 | dev_err(&data->client->dev, "Error reading reg_chip_id\n"); | |
192 | return ret; | |
193 | } | |
194 | ||
195 | dev_dbg(&data->client->dev, "Chip Id %x\n", ret); | |
196 | if (ret != BMG160_CHIP_ID_VAL) { | |
197 | dev_err(&data->client->dev, "invalid chip %x\n", ret); | |
198 | return -ENODEV; | |
199 | } | |
200 | ||
201 | ret = bmg160_set_mode(data, BMG160_MODE_NORMAL); | |
202 | if (ret < 0) | |
203 | return ret; | |
204 | ||
205 | /* Wait upto 500 ms to be ready after changing mode */ | |
206 | usleep_range(500, 1000); | |
207 | ||
208 | /* Set Bandwidth */ | |
209 | ret = bmg160_set_bw(data, BMG160_DEF_BW); | |
210 | if (ret < 0) | |
211 | return ret; | |
212 | ||
213 | /* Set Default Range */ | |
214 | ret = i2c_smbus_write_byte_data(data->client, | |
215 | BMG160_REG_RANGE, | |
216 | BMG160_RANGE_500DPS); | |
217 | if (ret < 0) { | |
218 | dev_err(&data->client->dev, "Error writing reg_range\n"); | |
219 | return ret; | |
220 | } | |
221 | data->dps_range = BMG160_RANGE_500DPS; | |
222 | ||
223 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_SLOPE_THRES); | |
224 | if (ret < 0) { | |
225 | dev_err(&data->client->dev, "Error reading reg_slope_thres\n"); | |
226 | return ret; | |
227 | } | |
228 | data->slope_thres = ret; | |
229 | ||
230 | /* Set default interrupt mode */ | |
5af6b307 SP |
231 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_EN_1); |
232 | if (ret < 0) { | |
233 | dev_err(&data->client->dev, "Error reading reg_int_en_1\n"); | |
234 | return ret; | |
235 | } | |
236 | ret &= ~BMG160_INT1_BIT_OD; | |
237 | ret = i2c_smbus_write_byte_data(data->client, | |
238 | BMG160_REG_INT_EN_1, ret); | |
239 | if (ret < 0) { | |
240 | dev_err(&data->client->dev, "Error writing reg_int_en_1\n"); | |
241 | return ret; | |
242 | } | |
243 | ||
22b46c45 SP |
244 | ret = i2c_smbus_write_byte_data(data->client, |
245 | BMG160_REG_INT_RST_LATCH, | |
246 | BMG160_INT_MODE_LATCH_INT | | |
247 | BMG160_INT_MODE_LATCH_RESET); | |
248 | if (ret < 0) { | |
249 | dev_err(&data->client->dev, | |
250 | "Error writing reg_motion_intr\n"); | |
251 | return ret; | |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | static int bmg160_set_power_state(struct bmg160_data *data, bool on) | |
258 | { | |
6f0a13f2 | 259 | #ifdef CONFIG_PM |
22b46c45 SP |
260 | int ret; |
261 | ||
262 | if (on) | |
263 | ret = pm_runtime_get_sync(&data->client->dev); | |
264 | else { | |
265 | pm_runtime_mark_last_busy(&data->client->dev); | |
266 | ret = pm_runtime_put_autosuspend(&data->client->dev); | |
267 | } | |
268 | ||
269 | if (ret < 0) { | |
270 | dev_err(&data->client->dev, | |
271 | "Failed: bmg160_set_power_state for %d\n", on); | |
10bef289 SP |
272 | if (on) |
273 | pm_runtime_put_noidle(&data->client->dev); | |
274 | ||
22b46c45 SP |
275 | return ret; |
276 | } | |
ef1c6b23 | 277 | #endif |
22b46c45 SP |
278 | |
279 | return 0; | |
280 | } | |
281 | ||
282 | static int bmg160_setup_any_motion_interrupt(struct bmg160_data *data, | |
283 | bool status) | |
284 | { | |
285 | int ret; | |
286 | ||
287 | /* Enable/Disable INT_MAP0 mapping */ | |
288 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_0); | |
289 | if (ret < 0) { | |
290 | dev_err(&data->client->dev, "Error reading reg_int_map0\n"); | |
291 | return ret; | |
292 | } | |
293 | if (status) | |
294 | ret |= BMG160_INT_MAP_0_BIT_ANY; | |
295 | else | |
296 | ret &= ~BMG160_INT_MAP_0_BIT_ANY; | |
297 | ||
298 | ret = i2c_smbus_write_byte_data(data->client, | |
299 | BMG160_REG_INT_MAP_0, | |
300 | ret); | |
301 | if (ret < 0) { | |
302 | dev_err(&data->client->dev, "Error writing reg_int_map0\n"); | |
303 | return ret; | |
304 | } | |
305 | ||
306 | /* Enable/Disable slope interrupts */ | |
307 | if (status) { | |
308 | /* Update slope thres */ | |
309 | ret = i2c_smbus_write_byte_data(data->client, | |
310 | BMG160_REG_SLOPE_THRES, | |
311 | data->slope_thres); | |
312 | if (ret < 0) { | |
313 | dev_err(&data->client->dev, | |
314 | "Error writing reg_slope_thres\n"); | |
315 | return ret; | |
316 | } | |
317 | ||
318 | ret = i2c_smbus_write_byte_data(data->client, | |
319 | BMG160_REG_MOTION_INTR, | |
320 | BMG160_INT_MOTION_X | | |
321 | BMG160_INT_MOTION_Y | | |
322 | BMG160_INT_MOTION_Z); | |
323 | if (ret < 0) { | |
324 | dev_err(&data->client->dev, | |
325 | "Error writing reg_motion_intr\n"); | |
326 | return ret; | |
327 | } | |
328 | ||
329 | /* | |
330 | * New data interrupt is always non-latched, | |
331 | * which will have higher priority, so no need | |
332 | * to set latched mode, we will be flooded anyway with INTR | |
333 | */ | |
334 | if (!data->dready_trigger_on) { | |
335 | ret = i2c_smbus_write_byte_data(data->client, | |
336 | BMG160_REG_INT_RST_LATCH, | |
337 | BMG160_INT_MODE_LATCH_INT | | |
338 | BMG160_INT_MODE_LATCH_RESET); | |
339 | if (ret < 0) { | |
340 | dev_err(&data->client->dev, | |
341 | "Error writing reg_rst_latch\n"); | |
342 | return ret; | |
343 | } | |
344 | } | |
345 | ||
346 | ret = i2c_smbus_write_byte_data(data->client, | |
347 | BMG160_REG_INT_EN_0, | |
348 | BMG160_DATA_ENABLE_INT); | |
349 | ||
350 | } else | |
351 | ret = i2c_smbus_write_byte_data(data->client, | |
352 | BMG160_REG_INT_EN_0, | |
353 | 0); | |
354 | ||
355 | if (ret < 0) { | |
356 | dev_err(&data->client->dev, "Error writing reg_int_en0\n"); | |
357 | return ret; | |
358 | } | |
359 | ||
360 | return 0; | |
361 | } | |
362 | ||
363 | static int bmg160_setup_new_data_interrupt(struct bmg160_data *data, | |
364 | bool status) | |
365 | { | |
366 | int ret; | |
367 | ||
368 | /* Enable/Disable INT_MAP1 mapping */ | |
369 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_MAP_1); | |
370 | if (ret < 0) { | |
371 | dev_err(&data->client->dev, "Error reading reg_int_map1\n"); | |
372 | return ret; | |
373 | } | |
374 | ||
375 | if (status) | |
376 | ret |= BMG160_INT_MAP_1_BIT_NEW_DATA; | |
377 | else | |
378 | ret &= ~BMG160_INT_MAP_1_BIT_NEW_DATA; | |
379 | ||
380 | ret = i2c_smbus_write_byte_data(data->client, | |
381 | BMG160_REG_INT_MAP_1, | |
382 | ret); | |
383 | if (ret < 0) { | |
384 | dev_err(&data->client->dev, "Error writing reg_int_map1\n"); | |
385 | return ret; | |
386 | } | |
387 | ||
388 | if (status) { | |
389 | ret = i2c_smbus_write_byte_data(data->client, | |
390 | BMG160_REG_INT_RST_LATCH, | |
391 | BMG160_INT_MODE_NON_LATCH_INT | | |
392 | BMG160_INT_MODE_LATCH_RESET); | |
393 | if (ret < 0) { | |
394 | dev_err(&data->client->dev, | |
395 | "Error writing reg_rst_latch\n"); | |
396 | return ret; | |
397 | } | |
398 | ||
399 | ret = i2c_smbus_write_byte_data(data->client, | |
400 | BMG160_REG_INT_EN_0, | |
401 | BMG160_DATA_ENABLE_INT); | |
402 | ||
403 | } else { | |
404 | /* Restore interrupt mode */ | |
405 | ret = i2c_smbus_write_byte_data(data->client, | |
406 | BMG160_REG_INT_RST_LATCH, | |
407 | BMG160_INT_MODE_LATCH_INT | | |
408 | BMG160_INT_MODE_LATCH_RESET); | |
409 | if (ret < 0) { | |
410 | dev_err(&data->client->dev, | |
411 | "Error writing reg_rst_latch\n"); | |
412 | return ret; | |
413 | } | |
414 | ||
415 | ret = i2c_smbus_write_byte_data(data->client, | |
416 | BMG160_REG_INT_EN_0, | |
417 | 0); | |
418 | } | |
419 | ||
420 | if (ret < 0) { | |
421 | dev_err(&data->client->dev, "Error writing reg_int_en0\n"); | |
422 | return ret; | |
423 | } | |
424 | ||
425 | return 0; | |
426 | } | |
427 | ||
428 | static int bmg160_get_bw(struct bmg160_data *data, int *val) | |
429 | { | |
430 | int i; | |
431 | ||
432 | for (i = 0; i < ARRAY_SIZE(bmg160_samp_freq_table); ++i) { | |
433 | if (bmg160_samp_freq_table[i].bw_bits == data->bw_bits) { | |
434 | *val = bmg160_samp_freq_table[i].val; | |
435 | return IIO_VAL_INT; | |
436 | } | |
437 | } | |
438 | ||
439 | return -EINVAL; | |
440 | } | |
441 | ||
442 | static int bmg160_set_scale(struct bmg160_data *data, int val) | |
443 | { | |
444 | int ret, i; | |
445 | ||
446 | for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { | |
447 | if (bmg160_scale_table[i].scale == val) { | |
448 | ret = i2c_smbus_write_byte_data( | |
449 | data->client, | |
450 | BMG160_REG_RANGE, | |
451 | bmg160_scale_table[i].dps_range); | |
452 | if (ret < 0) { | |
453 | dev_err(&data->client->dev, | |
454 | "Error writing reg_range\n"); | |
455 | return ret; | |
456 | } | |
457 | data->dps_range = bmg160_scale_table[i].dps_range; | |
458 | return 0; | |
459 | } | |
460 | } | |
461 | ||
462 | return -EINVAL; | |
463 | } | |
464 | ||
465 | static int bmg160_get_temp(struct bmg160_data *data, int *val) | |
466 | { | |
467 | int ret; | |
468 | ||
469 | mutex_lock(&data->mutex); | |
470 | ret = bmg160_set_power_state(data, true); | |
471 | if (ret < 0) { | |
472 | mutex_unlock(&data->mutex); | |
473 | return ret; | |
474 | } | |
475 | ||
476 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_TEMP); | |
477 | if (ret < 0) { | |
478 | dev_err(&data->client->dev, "Error reading reg_temp\n"); | |
479 | bmg160_set_power_state(data, false); | |
480 | mutex_unlock(&data->mutex); | |
481 | return ret; | |
482 | } | |
483 | ||
484 | *val = sign_extend32(ret, 7); | |
485 | ret = bmg160_set_power_state(data, false); | |
486 | mutex_unlock(&data->mutex); | |
487 | if (ret < 0) | |
488 | return ret; | |
489 | ||
490 | return IIO_VAL_INT; | |
491 | } | |
492 | ||
493 | static int bmg160_get_axis(struct bmg160_data *data, int axis, int *val) | |
494 | { | |
495 | int ret; | |
496 | ||
497 | mutex_lock(&data->mutex); | |
498 | ret = bmg160_set_power_state(data, true); | |
499 | if (ret < 0) { | |
500 | mutex_unlock(&data->mutex); | |
501 | return ret; | |
502 | } | |
503 | ||
504 | ret = i2c_smbus_read_word_data(data->client, BMG160_AXIS_TO_REG(axis)); | |
505 | if (ret < 0) { | |
506 | dev_err(&data->client->dev, "Error reading axis %d\n", axis); | |
507 | bmg160_set_power_state(data, false); | |
508 | mutex_unlock(&data->mutex); | |
509 | return ret; | |
510 | } | |
511 | ||
512 | *val = sign_extend32(ret, 15); | |
513 | ret = bmg160_set_power_state(data, false); | |
514 | mutex_unlock(&data->mutex); | |
515 | if (ret < 0) | |
516 | return ret; | |
517 | ||
518 | return IIO_VAL_INT; | |
519 | } | |
520 | ||
521 | static int bmg160_read_raw(struct iio_dev *indio_dev, | |
522 | struct iio_chan_spec const *chan, | |
523 | int *val, int *val2, long mask) | |
524 | { | |
525 | struct bmg160_data *data = iio_priv(indio_dev); | |
526 | int ret; | |
527 | ||
528 | switch (mask) { | |
529 | case IIO_CHAN_INFO_RAW: | |
530 | switch (chan->type) { | |
531 | case IIO_TEMP: | |
532 | return bmg160_get_temp(data, val); | |
533 | case IIO_ANGL_VEL: | |
534 | if (iio_buffer_enabled(indio_dev)) | |
535 | return -EBUSY; | |
536 | else | |
537 | return bmg160_get_axis(data, chan->scan_index, | |
538 | val); | |
539 | default: | |
540 | return -EINVAL; | |
541 | } | |
542 | case IIO_CHAN_INFO_OFFSET: | |
543 | if (chan->type == IIO_TEMP) { | |
544 | *val = BMG160_TEMP_CENTER_VAL; | |
545 | return IIO_VAL_INT; | |
546 | } else | |
547 | return -EINVAL; | |
548 | case IIO_CHAN_INFO_SCALE: | |
549 | *val = 0; | |
550 | switch (chan->type) { | |
551 | case IIO_TEMP: | |
552 | *val2 = 500000; | |
553 | return IIO_VAL_INT_PLUS_MICRO; | |
554 | case IIO_ANGL_VEL: | |
555 | { | |
556 | int i; | |
557 | ||
558 | for (i = 0; i < ARRAY_SIZE(bmg160_scale_table); ++i) { | |
559 | if (bmg160_scale_table[i].dps_range == | |
560 | data->dps_range) { | |
561 | *val2 = bmg160_scale_table[i].scale; | |
562 | return IIO_VAL_INT_PLUS_MICRO; | |
563 | } | |
564 | } | |
565 | return -EINVAL; | |
566 | } | |
567 | default: | |
568 | return -EINVAL; | |
569 | } | |
570 | case IIO_CHAN_INFO_SAMP_FREQ: | |
571 | *val2 = 0; | |
572 | mutex_lock(&data->mutex); | |
573 | ret = bmg160_get_bw(data, val); | |
574 | mutex_unlock(&data->mutex); | |
575 | return ret; | |
576 | default: | |
577 | return -EINVAL; | |
578 | } | |
579 | } | |
580 | ||
581 | static int bmg160_write_raw(struct iio_dev *indio_dev, | |
582 | struct iio_chan_spec const *chan, | |
583 | int val, int val2, long mask) | |
584 | { | |
585 | struct bmg160_data *data = iio_priv(indio_dev); | |
586 | int ret; | |
587 | ||
588 | switch (mask) { | |
589 | case IIO_CHAN_INFO_SAMP_FREQ: | |
590 | mutex_lock(&data->mutex); | |
591 | /* | |
592 | * Section 4.2 of spec | |
593 | * In suspend mode, the only supported operations are reading | |
594 | * registers as well as writing to the (0x14) softreset | |
595 | * register. Since we will be in suspend mode by default, change | |
596 | * mode to power on for other writes. | |
597 | */ | |
598 | ret = bmg160_set_power_state(data, true); | |
599 | if (ret < 0) { | |
600 | mutex_unlock(&data->mutex); | |
601 | return ret; | |
602 | } | |
603 | ret = bmg160_set_bw(data, val); | |
604 | if (ret < 0) { | |
605 | bmg160_set_power_state(data, false); | |
606 | mutex_unlock(&data->mutex); | |
607 | return ret; | |
608 | } | |
609 | ret = bmg160_set_power_state(data, false); | |
610 | mutex_unlock(&data->mutex); | |
611 | return ret; | |
612 | case IIO_CHAN_INFO_SCALE: | |
613 | if (val) | |
614 | return -EINVAL; | |
615 | ||
616 | mutex_lock(&data->mutex); | |
617 | /* Refer to comments above for the suspend mode ops */ | |
618 | ret = bmg160_set_power_state(data, true); | |
619 | if (ret < 0) { | |
620 | mutex_unlock(&data->mutex); | |
621 | return ret; | |
622 | } | |
623 | ret = bmg160_set_scale(data, val2); | |
624 | if (ret < 0) { | |
625 | bmg160_set_power_state(data, false); | |
626 | mutex_unlock(&data->mutex); | |
627 | return ret; | |
628 | } | |
629 | ret = bmg160_set_power_state(data, false); | |
630 | mutex_unlock(&data->mutex); | |
631 | return ret; | |
632 | default: | |
633 | return -EINVAL; | |
634 | } | |
635 | ||
636 | return -EINVAL; | |
637 | } | |
638 | ||
639 | static int bmg160_read_event(struct iio_dev *indio_dev, | |
640 | const struct iio_chan_spec *chan, | |
641 | enum iio_event_type type, | |
642 | enum iio_event_direction dir, | |
643 | enum iio_event_info info, | |
644 | int *val, int *val2) | |
645 | { | |
646 | struct bmg160_data *data = iio_priv(indio_dev); | |
647 | ||
648 | *val2 = 0; | |
649 | switch (info) { | |
650 | case IIO_EV_INFO_VALUE: | |
651 | *val = data->slope_thres & BMG160_SLOPE_THRES_MASK; | |
652 | break; | |
653 | default: | |
654 | return -EINVAL; | |
655 | } | |
656 | ||
657 | return IIO_VAL_INT; | |
658 | } | |
659 | ||
660 | static int bmg160_write_event(struct iio_dev *indio_dev, | |
661 | const struct iio_chan_spec *chan, | |
662 | enum iio_event_type type, | |
663 | enum iio_event_direction dir, | |
664 | enum iio_event_info info, | |
665 | int val, int val2) | |
666 | { | |
667 | struct bmg160_data *data = iio_priv(indio_dev); | |
668 | ||
669 | switch (info) { | |
670 | case IIO_EV_INFO_VALUE: | |
671 | if (data->ev_enable_state) | |
672 | return -EBUSY; | |
673 | data->slope_thres &= ~BMG160_SLOPE_THRES_MASK; | |
674 | data->slope_thres |= (val & BMG160_SLOPE_THRES_MASK); | |
675 | break; | |
676 | default: | |
677 | return -EINVAL; | |
678 | } | |
679 | ||
680 | return 0; | |
681 | } | |
682 | ||
683 | static int bmg160_read_event_config(struct iio_dev *indio_dev, | |
684 | const struct iio_chan_spec *chan, | |
685 | enum iio_event_type type, | |
686 | enum iio_event_direction dir) | |
687 | { | |
688 | ||
689 | struct bmg160_data *data = iio_priv(indio_dev); | |
690 | ||
691 | return data->ev_enable_state; | |
692 | } | |
693 | ||
694 | static int bmg160_write_event_config(struct iio_dev *indio_dev, | |
695 | const struct iio_chan_spec *chan, | |
696 | enum iio_event_type type, | |
697 | enum iio_event_direction dir, | |
698 | int state) | |
699 | { | |
700 | struct bmg160_data *data = iio_priv(indio_dev); | |
701 | int ret; | |
702 | ||
703 | if (state && data->ev_enable_state) | |
704 | return 0; | |
705 | ||
706 | mutex_lock(&data->mutex); | |
707 | ||
708 | if (!state && data->motion_trigger_on) { | |
709 | data->ev_enable_state = 0; | |
710 | mutex_unlock(&data->mutex); | |
711 | return 0; | |
712 | } | |
713 | /* | |
714 | * We will expect the enable and disable to do operation in | |
715 | * in reverse order. This will happen here anyway as our | |
716 | * resume operation uses sync mode runtime pm calls, the | |
717 | * suspend operation will be delayed by autosuspend delay | |
718 | * So the disable operation will still happen in reverse of | |
719 | * enable operation. When runtime pm is disabled the mode | |
720 | * is always on so sequence doesn't matter | |
721 | */ | |
722 | ret = bmg160_set_power_state(data, state); | |
723 | if (ret < 0) { | |
724 | mutex_unlock(&data->mutex); | |
725 | return ret; | |
726 | } | |
727 | ||
728 | ret = bmg160_setup_any_motion_interrupt(data, state); | |
729 | if (ret < 0) { | |
10bef289 | 730 | bmg160_set_power_state(data, false); |
22b46c45 SP |
731 | mutex_unlock(&data->mutex); |
732 | return ret; | |
733 | } | |
734 | ||
735 | data->ev_enable_state = state; | |
736 | mutex_unlock(&data->mutex); | |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
741 | static int bmg160_validate_trigger(struct iio_dev *indio_dev, | |
742 | struct iio_trigger *trig) | |
743 | { | |
744 | struct bmg160_data *data = iio_priv(indio_dev); | |
745 | ||
746 | if (data->dready_trig != trig && data->motion_trig != trig) | |
747 | return -EINVAL; | |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
752 | static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 400 1000 2000"); | |
753 | ||
754 | static IIO_CONST_ATTR(in_anglvel_scale_available, | |
755 | "0.001065 0.000532 0.000266 0.000133 0.000066"); | |
756 | ||
757 | static struct attribute *bmg160_attributes[] = { | |
758 | &iio_const_attr_sampling_frequency_available.dev_attr.attr, | |
759 | &iio_const_attr_in_anglvel_scale_available.dev_attr.attr, | |
760 | NULL, | |
761 | }; | |
762 | ||
763 | static const struct attribute_group bmg160_attrs_group = { | |
764 | .attrs = bmg160_attributes, | |
765 | }; | |
766 | ||
767 | static const struct iio_event_spec bmg160_event = { | |
768 | .type = IIO_EV_TYPE_ROC, | |
6896ab3a | 769 | .dir = IIO_EV_DIR_EITHER, |
22b46c45 SP |
770 | .mask_shared_by_type = BIT(IIO_EV_INFO_VALUE) | |
771 | BIT(IIO_EV_INFO_ENABLE) | |
772 | }; | |
773 | ||
774 | #define BMG160_CHANNEL(_axis) { \ | |
775 | .type = IIO_ANGL_VEL, \ | |
776 | .modified = 1, \ | |
777 | .channel2 = IIO_MOD_##_axis, \ | |
778 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ | |
779 | .info_mask_shared_by_type = BIT(IIO_CHAN_INFO_SCALE) | \ | |
780 | BIT(IIO_CHAN_INFO_SAMP_FREQ), \ | |
781 | .scan_index = AXIS_##_axis, \ | |
782 | .scan_type = { \ | |
783 | .sign = 's', \ | |
784 | .realbits = 16, \ | |
785 | .storagebits = 16, \ | |
786 | }, \ | |
787 | .event_spec = &bmg160_event, \ | |
788 | .num_event_specs = 1 \ | |
789 | } | |
790 | ||
791 | static const struct iio_chan_spec bmg160_channels[] = { | |
792 | { | |
793 | .type = IIO_TEMP, | |
794 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | | |
795 | BIT(IIO_CHAN_INFO_SCALE) | | |
796 | BIT(IIO_CHAN_INFO_OFFSET), | |
797 | .scan_index = -1, | |
798 | }, | |
799 | BMG160_CHANNEL(X), | |
800 | BMG160_CHANNEL(Y), | |
801 | BMG160_CHANNEL(Z), | |
802 | IIO_CHAN_SOFT_TIMESTAMP(3), | |
803 | }; | |
804 | ||
805 | static const struct iio_info bmg160_info = { | |
806 | .attrs = &bmg160_attrs_group, | |
807 | .read_raw = bmg160_read_raw, | |
808 | .write_raw = bmg160_write_raw, | |
809 | .read_event_value = bmg160_read_event, | |
810 | .write_event_value = bmg160_write_event, | |
811 | .write_event_config = bmg160_write_event_config, | |
812 | .read_event_config = bmg160_read_event_config, | |
813 | .validate_trigger = bmg160_validate_trigger, | |
814 | .driver_module = THIS_MODULE, | |
815 | }; | |
816 | ||
817 | static irqreturn_t bmg160_trigger_handler(int irq, void *p) | |
818 | { | |
819 | struct iio_poll_func *pf = p; | |
820 | struct iio_dev *indio_dev = pf->indio_dev; | |
821 | struct bmg160_data *data = iio_priv(indio_dev); | |
822 | int bit, ret, i = 0; | |
823 | ||
824 | mutex_lock(&data->mutex); | |
825 | for_each_set_bit(bit, indio_dev->buffer->scan_mask, | |
826 | indio_dev->masklength) { | |
827 | ret = i2c_smbus_read_word_data(data->client, | |
828 | BMG160_AXIS_TO_REG(bit)); | |
829 | if (ret < 0) { | |
830 | mutex_unlock(&data->mutex); | |
831 | goto err; | |
832 | } | |
833 | data->buffer[i++] = ret; | |
834 | } | |
835 | mutex_unlock(&data->mutex); | |
836 | ||
837 | iio_push_to_buffers_with_timestamp(indio_dev, data->buffer, | |
838 | data->timestamp); | |
839 | err: | |
840 | iio_trigger_notify_done(indio_dev->trig); | |
841 | ||
842 | return IRQ_HANDLED; | |
843 | } | |
844 | ||
845 | static int bmg160_trig_try_reen(struct iio_trigger *trig) | |
846 | { | |
847 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); | |
848 | struct bmg160_data *data = iio_priv(indio_dev); | |
849 | int ret; | |
850 | ||
851 | /* new data interrupts don't need ack */ | |
852 | if (data->dready_trigger_on) | |
853 | return 0; | |
854 | ||
855 | /* Set latched mode interrupt and clear any latched interrupt */ | |
856 | ret = i2c_smbus_write_byte_data(data->client, | |
857 | BMG160_REG_INT_RST_LATCH, | |
858 | BMG160_INT_MODE_LATCH_INT | | |
859 | BMG160_INT_MODE_LATCH_RESET); | |
860 | if (ret < 0) { | |
861 | dev_err(&data->client->dev, "Error writing reg_rst_latch\n"); | |
862 | return ret; | |
863 | } | |
864 | ||
865 | return 0; | |
866 | } | |
867 | ||
868 | static int bmg160_data_rdy_trigger_set_state(struct iio_trigger *trig, | |
869 | bool state) | |
870 | { | |
871 | struct iio_dev *indio_dev = iio_trigger_get_drvdata(trig); | |
872 | struct bmg160_data *data = iio_priv(indio_dev); | |
873 | int ret; | |
874 | ||
875 | mutex_lock(&data->mutex); | |
876 | ||
877 | if (!state && data->ev_enable_state && data->motion_trigger_on) { | |
878 | data->motion_trigger_on = false; | |
879 | mutex_unlock(&data->mutex); | |
880 | return 0; | |
881 | } | |
882 | ||
883 | /* | |
884 | * Refer to comment in bmg160_write_event_config for | |
885 | * enable/disable operation order | |
886 | */ | |
887 | ret = bmg160_set_power_state(data, state); | |
888 | if (ret < 0) { | |
889 | mutex_unlock(&data->mutex); | |
890 | return ret; | |
891 | } | |
892 | if (data->motion_trig == trig) | |
893 | ret = bmg160_setup_any_motion_interrupt(data, state); | |
894 | else | |
895 | ret = bmg160_setup_new_data_interrupt(data, state); | |
896 | if (ret < 0) { | |
10bef289 | 897 | bmg160_set_power_state(data, false); |
22b46c45 SP |
898 | mutex_unlock(&data->mutex); |
899 | return ret; | |
900 | } | |
901 | if (data->motion_trig == trig) | |
902 | data->motion_trigger_on = state; | |
903 | else | |
904 | data->dready_trigger_on = state; | |
905 | ||
906 | mutex_unlock(&data->mutex); | |
907 | ||
908 | return 0; | |
909 | } | |
910 | ||
911 | static const struct iio_trigger_ops bmg160_trigger_ops = { | |
912 | .set_trigger_state = bmg160_data_rdy_trigger_set_state, | |
913 | .try_reenable = bmg160_trig_try_reen, | |
914 | .owner = THIS_MODULE, | |
915 | }; | |
916 | ||
917 | static irqreturn_t bmg160_event_handler(int irq, void *private) | |
918 | { | |
919 | struct iio_dev *indio_dev = private; | |
920 | struct bmg160_data *data = iio_priv(indio_dev); | |
921 | int ret; | |
922 | int dir; | |
923 | ||
924 | ret = i2c_smbus_read_byte_data(data->client, BMG160_REG_INT_STATUS_2); | |
925 | if (ret < 0) { | |
926 | dev_err(&data->client->dev, "Error reading reg_int_status2\n"); | |
927 | goto ack_intr_status; | |
928 | } | |
929 | ||
930 | if (ret & 0x08) | |
931 | dir = IIO_EV_DIR_RISING; | |
932 | else | |
933 | dir = IIO_EV_DIR_FALLING; | |
934 | ||
cb80f6a3 | 935 | if (ret & BMG160_ANY_MOTION_BIT_X) |
22b46c45 SP |
936 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, |
937 | 0, | |
cb80f6a3 SP |
938 | IIO_MOD_X, |
939 | IIO_EV_TYPE_ROC, | |
940 | dir), | |
941 | data->timestamp); | |
942 | if (ret & BMG160_ANY_MOTION_BIT_Y) | |
943 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, | |
944 | 0, | |
945 | IIO_MOD_Y, | |
946 | IIO_EV_TYPE_ROC, | |
947 | dir), | |
948 | data->timestamp); | |
949 | if (ret & BMG160_ANY_MOTION_BIT_Z) | |
950 | iio_push_event(indio_dev, IIO_MOD_EVENT_CODE(IIO_ANGL_VEL, | |
951 | 0, | |
952 | IIO_MOD_Z, | |
22b46c45 SP |
953 | IIO_EV_TYPE_ROC, |
954 | dir), | |
955 | data->timestamp); | |
956 | ||
957 | ack_intr_status: | |
958 | if (!data->dready_trigger_on) { | |
959 | ret = i2c_smbus_write_byte_data(data->client, | |
960 | BMG160_REG_INT_RST_LATCH, | |
961 | BMG160_INT_MODE_LATCH_INT | | |
962 | BMG160_INT_MODE_LATCH_RESET); | |
963 | if (ret < 0) | |
964 | dev_err(&data->client->dev, | |
965 | "Error writing reg_rst_latch\n"); | |
966 | } | |
967 | ||
968 | return IRQ_HANDLED; | |
969 | } | |
970 | ||
971 | static irqreturn_t bmg160_data_rdy_trig_poll(int irq, void *private) | |
972 | { | |
973 | struct iio_dev *indio_dev = private; | |
974 | struct bmg160_data *data = iio_priv(indio_dev); | |
975 | ||
976 | data->timestamp = iio_get_time_ns(); | |
977 | ||
978 | if (data->dready_trigger_on) | |
979 | iio_trigger_poll(data->dready_trig); | |
980 | else if (data->motion_trigger_on) | |
981 | iio_trigger_poll(data->motion_trig); | |
982 | ||
983 | if (data->ev_enable_state) | |
984 | return IRQ_WAKE_THREAD; | |
985 | else | |
986 | return IRQ_HANDLED; | |
987 | ||
988 | } | |
989 | ||
3a0888ed IT |
990 | static int bmg160_gpio_probe(struct i2c_client *client, |
991 | struct bmg160_data *data) | |
992 | ||
22b46c45 | 993 | { |
22b46c45 SP |
994 | struct device *dev; |
995 | struct gpio_desc *gpio; | |
996 | int ret; | |
997 | ||
998 | if (!client) | |
999 | return -EINVAL; | |
1000 | ||
1001 | dev = &client->dev; | |
22b46c45 SP |
1002 | |
1003 | /* data ready gpio interrupt pin */ | |
1004 | gpio = devm_gpiod_get_index(dev, BMG160_GPIO_NAME, 0); | |
1005 | if (IS_ERR(gpio)) { | |
1006 | dev_err(dev, "acpi gpio get index failed\n"); | |
1007 | return PTR_ERR(gpio); | |
1008 | } | |
1009 | ||
1010 | ret = gpiod_direction_input(gpio); | |
1011 | if (ret) | |
1012 | return ret; | |
1013 | ||
1014 | ret = gpiod_to_irq(gpio); | |
1015 | ||
1016 | dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret); | |
1017 | ||
1018 | return ret; | |
1019 | } | |
1020 | ||
3a0888ed IT |
1021 | static const char *bmg160_match_acpi_device(struct device *dev) |
1022 | { | |
1023 | const struct acpi_device_id *id; | |
1024 | ||
1025 | id = acpi_match_device(dev->driver->acpi_match_table, dev); | |
1026 | if (!id) | |
1027 | return NULL; | |
1028 | ||
1029 | return dev_name(dev); | |
1030 | } | |
1031 | ||
22b46c45 SP |
1032 | static int bmg160_probe(struct i2c_client *client, |
1033 | const struct i2c_device_id *id) | |
1034 | { | |
1035 | struct bmg160_data *data; | |
1036 | struct iio_dev *indio_dev; | |
1037 | int ret; | |
3a0888ed | 1038 | const char *name = NULL; |
22b46c45 SP |
1039 | |
1040 | indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); | |
1041 | if (!indio_dev) | |
1042 | return -ENOMEM; | |
1043 | ||
1044 | data = iio_priv(indio_dev); | |
1045 | i2c_set_clientdata(client, indio_dev); | |
1046 | data->client = client; | |
1047 | ||
1048 | ret = bmg160_chip_init(data); | |
1049 | if (ret < 0) | |
1050 | return ret; | |
1051 | ||
1052 | mutex_init(&data->mutex); | |
1053 | ||
3a0888ed IT |
1054 | if (id) |
1055 | name = id->name; | |
1056 | ||
1057 | if (ACPI_HANDLE(&client->dev)) | |
1058 | name = bmg160_match_acpi_device(&client->dev); | |
1059 | ||
22b46c45 SP |
1060 | indio_dev->dev.parent = &client->dev; |
1061 | indio_dev->channels = bmg160_channels; | |
1062 | indio_dev->num_channels = ARRAY_SIZE(bmg160_channels); | |
3a0888ed | 1063 | indio_dev->name = name; |
22b46c45 SP |
1064 | indio_dev->modes = INDIO_DIRECT_MODE; |
1065 | indio_dev->info = &bmg160_info; | |
1066 | ||
1067 | if (client->irq <= 0) | |
3a0888ed | 1068 | client->irq = bmg160_gpio_probe(client, data); |
22b46c45 SP |
1069 | |
1070 | if (client->irq > 0) { | |
1071 | ret = devm_request_threaded_irq(&client->dev, | |
1072 | client->irq, | |
1073 | bmg160_data_rdy_trig_poll, | |
1074 | bmg160_event_handler, | |
1075 | IRQF_TRIGGER_RISING, | |
1076 | BMG160_IRQ_NAME, | |
1077 | indio_dev); | |
1078 | if (ret) | |
1079 | return ret; | |
1080 | ||
1081 | data->dready_trig = devm_iio_trigger_alloc(&client->dev, | |
1082 | "%s-dev%d", | |
1083 | indio_dev->name, | |
1084 | indio_dev->id); | |
1085 | if (!data->dready_trig) | |
1086 | return -ENOMEM; | |
1087 | ||
1088 | data->motion_trig = devm_iio_trigger_alloc(&client->dev, | |
1089 | "%s-any-motion-dev%d", | |
1090 | indio_dev->name, | |
1091 | indio_dev->id); | |
1092 | if (!data->motion_trig) | |
1093 | return -ENOMEM; | |
1094 | ||
1095 | data->dready_trig->dev.parent = &client->dev; | |
1096 | data->dready_trig->ops = &bmg160_trigger_ops; | |
1097 | iio_trigger_set_drvdata(data->dready_trig, indio_dev); | |
1098 | ret = iio_trigger_register(data->dready_trig); | |
1099 | if (ret) | |
1100 | return ret; | |
1101 | ||
1102 | data->motion_trig->dev.parent = &client->dev; | |
1103 | data->motion_trig->ops = &bmg160_trigger_ops; | |
1104 | iio_trigger_set_drvdata(data->motion_trig, indio_dev); | |
1105 | ret = iio_trigger_register(data->motion_trig); | |
1106 | if (ret) { | |
1107 | data->motion_trig = NULL; | |
1108 | goto err_trigger_unregister; | |
1109 | } | |
1110 | ||
1111 | ret = iio_triggered_buffer_setup(indio_dev, | |
1112 | NULL, | |
1113 | bmg160_trigger_handler, | |
1114 | NULL); | |
1115 | if (ret < 0) { | |
1116 | dev_err(&client->dev, | |
1117 | "iio triggered buffer setup failed\n"); | |
1118 | goto err_trigger_unregister; | |
1119 | } | |
1120 | } | |
1121 | ||
1122 | ret = iio_device_register(indio_dev); | |
1123 | if (ret < 0) { | |
1124 | dev_err(&client->dev, "unable to register iio device\n"); | |
1125 | goto err_buffer_cleanup; | |
1126 | } | |
1127 | ||
1128 | ret = pm_runtime_set_active(&client->dev); | |
1129 | if (ret) | |
1130 | goto err_iio_unregister; | |
1131 | ||
1132 | pm_runtime_enable(&client->dev); | |
1133 | pm_runtime_set_autosuspend_delay(&client->dev, | |
1134 | BMG160_AUTO_SUSPEND_DELAY_MS); | |
1135 | pm_runtime_use_autosuspend(&client->dev); | |
1136 | ||
1137 | return 0; | |
1138 | ||
1139 | err_iio_unregister: | |
1140 | iio_device_unregister(indio_dev); | |
1141 | err_buffer_cleanup: | |
1142 | if (data->dready_trig) | |
1143 | iio_triggered_buffer_cleanup(indio_dev); | |
1144 | err_trigger_unregister: | |
1145 | if (data->dready_trig) | |
1146 | iio_trigger_unregister(data->dready_trig); | |
1147 | if (data->motion_trig) | |
1148 | iio_trigger_unregister(data->motion_trig); | |
1149 | ||
1150 | return ret; | |
1151 | } | |
1152 | ||
1153 | static int bmg160_remove(struct i2c_client *client) | |
1154 | { | |
1155 | struct iio_dev *indio_dev = i2c_get_clientdata(client); | |
1156 | struct bmg160_data *data = iio_priv(indio_dev); | |
1157 | ||
1158 | pm_runtime_disable(&client->dev); | |
1159 | pm_runtime_set_suspended(&client->dev); | |
1160 | pm_runtime_put_noidle(&client->dev); | |
1161 | ||
1162 | iio_device_unregister(indio_dev); | |
1163 | ||
1164 | if (data->dready_trig) { | |
1165 | iio_triggered_buffer_cleanup(indio_dev); | |
1166 | iio_trigger_unregister(data->dready_trig); | |
1167 | iio_trigger_unregister(data->motion_trig); | |
1168 | } | |
1169 | ||
1170 | mutex_lock(&data->mutex); | |
1171 | bmg160_set_mode(data, BMG160_MODE_DEEP_SUSPEND); | |
1172 | mutex_unlock(&data->mutex); | |
1173 | ||
1174 | return 0; | |
1175 | } | |
1176 | ||
1177 | #ifdef CONFIG_PM_SLEEP | |
1178 | static int bmg160_suspend(struct device *dev) | |
1179 | { | |
1180 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); | |
1181 | struct bmg160_data *data = iio_priv(indio_dev); | |
1182 | ||
1183 | mutex_lock(&data->mutex); | |
1184 | bmg160_set_mode(data, BMG160_MODE_SUSPEND); | |
1185 | mutex_unlock(&data->mutex); | |
1186 | ||
1187 | return 0; | |
1188 | } | |
1189 | ||
1190 | static int bmg160_resume(struct device *dev) | |
1191 | { | |
1192 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); | |
1193 | struct bmg160_data *data = iio_priv(indio_dev); | |
1194 | ||
1195 | mutex_lock(&data->mutex); | |
1196 | if (data->dready_trigger_on || data->motion_trigger_on || | |
1197 | data->ev_enable_state) | |
1198 | bmg160_set_mode(data, BMG160_MODE_NORMAL); | |
1199 | mutex_unlock(&data->mutex); | |
1200 | ||
1201 | return 0; | |
1202 | } | |
1203 | #endif | |
1204 | ||
6f0a13f2 | 1205 | #ifdef CONFIG_PM |
22b46c45 SP |
1206 | static int bmg160_runtime_suspend(struct device *dev) |
1207 | { | |
1208 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); | |
1209 | struct bmg160_data *data = iio_priv(indio_dev); | |
10bef289 | 1210 | int ret; |
22b46c45 | 1211 | |
10bef289 SP |
1212 | ret = bmg160_set_mode(data, BMG160_MODE_SUSPEND); |
1213 | if (ret < 0) { | |
1214 | dev_err(&data->client->dev, "set mode failed\n"); | |
1215 | return -EAGAIN; | |
1216 | } | |
1217 | ||
1218 | return 0; | |
22b46c45 SP |
1219 | } |
1220 | ||
1221 | static int bmg160_runtime_resume(struct device *dev) | |
1222 | { | |
1223 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); | |
1224 | struct bmg160_data *data = iio_priv(indio_dev); | |
1225 | int ret; | |
1226 | ||
1227 | ret = bmg160_set_mode(data, BMG160_MODE_NORMAL); | |
1228 | if (ret < 0) | |
1229 | return ret; | |
1230 | ||
1231 | msleep_interruptible(BMG160_MAX_STARTUP_TIME_MS); | |
1232 | ||
1233 | return 0; | |
1234 | } | |
1235 | #endif | |
1236 | ||
1237 | static const struct dev_pm_ops bmg160_pm_ops = { | |
1238 | SET_SYSTEM_SLEEP_PM_OPS(bmg160_suspend, bmg160_resume) | |
1239 | SET_RUNTIME_PM_OPS(bmg160_runtime_suspend, | |
1240 | bmg160_runtime_resume, NULL) | |
1241 | }; | |
1242 | ||
1243 | static const struct acpi_device_id bmg160_acpi_match[] = { | |
1244 | {"BMG0160", 0}, | |
3a0888ed IT |
1245 | {"BMI055B", 0}, |
1246 | {}, | |
22b46c45 | 1247 | }; |
3a0888ed | 1248 | |
22b46c45 SP |
1249 | MODULE_DEVICE_TABLE(acpi, bmg160_acpi_match); |
1250 | ||
1251 | static const struct i2c_device_id bmg160_id[] = { | |
1252 | {"bmg160", 0}, | |
3a0888ed | 1253 | {"bmi055_gyro", 0}, |
22b46c45 SP |
1254 | {} |
1255 | }; | |
1256 | ||
1257 | MODULE_DEVICE_TABLE(i2c, bmg160_id); | |
1258 | ||
1259 | static struct i2c_driver bmg160_driver = { | |
1260 | .driver = { | |
1261 | .name = BMG160_DRV_NAME, | |
1262 | .acpi_match_table = ACPI_PTR(bmg160_acpi_match), | |
1263 | .pm = &bmg160_pm_ops, | |
1264 | }, | |
1265 | .probe = bmg160_probe, | |
1266 | .remove = bmg160_remove, | |
1267 | .id_table = bmg160_id, | |
1268 | }; | |
1269 | module_i2c_driver(bmg160_driver); | |
1270 | ||
1271 | MODULE_AUTHOR("Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>"); | |
1272 | MODULE_LICENSE("GPL v2"); | |
1273 | MODULE_DESCRIPTION("BMG160 Gyro driver"); |