Commit | Line | Data |
---|---|---|
efa86e9f DB |
1 | /* |
2 | * RPR-0521 ROHM Ambient Light and Proximity Sensor | |
3 | * | |
4 | * Copyright (c) 2015, Intel Corporation. | |
5 | * | |
6 | * This file is subject to the terms and conditions of version 2 of | |
7 | * the GNU General Public License. See the file COPYING in the main | |
8 | * directory of this archive for more details. | |
9 | * | |
10 | * IIO driver for RPR-0521RS (7-bit I2C slave address 0x38). | |
11 | * | |
12 | * TODO: illuminance channel, PM support, buffer | |
13 | */ | |
14 | ||
15 | #include <linux/module.h> | |
16 | #include <linux/init.h> | |
17 | #include <linux/i2c.h> | |
18 | #include <linux/regmap.h> | |
19 | #include <linux/delay.h> | |
20 | #include <linux/acpi.h> | |
21 | ||
22 | #include <linux/iio/iio.h> | |
23 | #include <linux/iio/sysfs.h> | |
24 | #include <linux/pm_runtime.h> | |
25 | ||
26 | #define RPR0521_REG_SYSTEM_CTRL 0x40 | |
27 | #define RPR0521_REG_MODE_CTRL 0x41 | |
28 | #define RPR0521_REG_ALS_CTRL 0x42 | |
29 | #define RPR0521_REG_PXS_CTRL 0x43 | |
30 | #define RPR0521_REG_PXS_DATA 0x44 /* 16-bit, little endian */ | |
31 | #define RPR0521_REG_ALS_DATA0 0x46 /* 16-bit, little endian */ | |
32 | #define RPR0521_REG_ALS_DATA1 0x48 /* 16-bit, little endian */ | |
33 | #define RPR0521_REG_ID 0x92 | |
34 | ||
35 | #define RPR0521_MODE_ALS_MASK BIT(7) | |
36 | #define RPR0521_MODE_PXS_MASK BIT(6) | |
37 | #define RPR0521_MODE_MEAS_TIME_MASK GENMASK(3, 0) | |
38 | #define RPR0521_ALS_DATA0_GAIN_MASK GENMASK(5, 4) | |
39 | #define RPR0521_ALS_DATA0_GAIN_SHIFT 4 | |
40 | #define RPR0521_ALS_DATA1_GAIN_MASK GENMASK(3, 2) | |
41 | #define RPR0521_ALS_DATA1_GAIN_SHIFT 2 | |
42 | #define RPR0521_PXS_GAIN_MASK GENMASK(5, 4) | |
43 | #define RPR0521_PXS_GAIN_SHIFT 4 | |
44 | ||
45 | #define RPR0521_MODE_ALS_ENABLE BIT(7) | |
46 | #define RPR0521_MODE_ALS_DISABLE 0x00 | |
47 | #define RPR0521_MODE_PXS_ENABLE BIT(6) | |
48 | #define RPR0521_MODE_PXS_DISABLE 0x00 | |
49 | ||
50 | #define RPR0521_MANUFACT_ID 0xE0 | |
51 | #define RPR0521_DEFAULT_MEAS_TIME 0x06 /* ALS - 100ms, PXS - 100ms */ | |
52 | ||
53 | #define RPR0521_DRV_NAME "RPR0521" | |
54 | #define RPR0521_REGMAP_NAME "rpr0521_regmap" | |
55 | ||
56 | #define RPR0521_SLEEP_DELAY_MS 2000 | |
57 | ||
58 | #define RPR0521_ALS_SCALE_AVAIL "0.007812 0.015625 0.5 1" | |
59 | #define RPR0521_PXS_SCALE_AVAIL "0.125 0.5 1" | |
60 | ||
61 | struct rpr0521_gain { | |
62 | int scale; | |
63 | int uscale; | |
64 | }; | |
65 | ||
66 | static const struct rpr0521_gain rpr0521_als_gain[4] = { | |
67 | {1, 0}, /* x1 */ | |
68 | {0, 500000}, /* x2 */ | |
69 | {0, 15625}, /* x64 */ | |
70 | {0, 7812}, /* x128 */ | |
71 | }; | |
72 | ||
73 | static const struct rpr0521_gain rpr0521_pxs_gain[3] = { | |
74 | {1, 0}, /* x1 */ | |
75 | {0, 500000}, /* x2 */ | |
76 | {0, 125000}, /* x4 */ | |
77 | }; | |
78 | ||
79 | enum rpr0521_channel { | |
80 | RPR0521_CHAN_ALS_DATA0, | |
81 | RPR0521_CHAN_ALS_DATA1, | |
82 | RPR0521_CHAN_PXS, | |
83 | }; | |
84 | ||
85 | struct rpr0521_reg_desc { | |
86 | u8 address; | |
87 | u8 device_mask; | |
88 | }; | |
89 | ||
90 | static const struct rpr0521_reg_desc rpr0521_data_reg[] = { | |
91 | [RPR0521_CHAN_ALS_DATA0] = { | |
92 | .address = RPR0521_REG_ALS_DATA0, | |
93 | .device_mask = RPR0521_MODE_ALS_MASK, | |
94 | }, | |
95 | [RPR0521_CHAN_ALS_DATA1] = { | |
96 | .address = RPR0521_REG_ALS_DATA1, | |
97 | .device_mask = RPR0521_MODE_ALS_MASK, | |
98 | }, | |
99 | [RPR0521_CHAN_PXS] = { | |
100 | .address = RPR0521_REG_PXS_DATA, | |
101 | .device_mask = RPR0521_MODE_PXS_MASK, | |
102 | }, | |
103 | }; | |
104 | ||
105 | static const struct rpr0521_gain_info { | |
106 | u8 reg; | |
107 | u8 mask; | |
108 | u8 shift; | |
109 | const struct rpr0521_gain *gain; | |
110 | int size; | |
111 | } rpr0521_gain[] = { | |
112 | [RPR0521_CHAN_ALS_DATA0] = { | |
113 | .reg = RPR0521_REG_ALS_CTRL, | |
114 | .mask = RPR0521_ALS_DATA0_GAIN_MASK, | |
115 | .shift = RPR0521_ALS_DATA0_GAIN_SHIFT, | |
116 | .gain = rpr0521_als_gain, | |
117 | .size = ARRAY_SIZE(rpr0521_als_gain), | |
118 | }, | |
119 | [RPR0521_CHAN_ALS_DATA1] = { | |
120 | .reg = RPR0521_REG_ALS_CTRL, | |
121 | .mask = RPR0521_ALS_DATA1_GAIN_MASK, | |
122 | .shift = RPR0521_ALS_DATA1_GAIN_SHIFT, | |
123 | .gain = rpr0521_als_gain, | |
124 | .size = ARRAY_SIZE(rpr0521_als_gain), | |
125 | }, | |
126 | [RPR0521_CHAN_PXS] = { | |
127 | .reg = RPR0521_REG_PXS_CTRL, | |
128 | .mask = RPR0521_PXS_GAIN_MASK, | |
129 | .shift = RPR0521_PXS_GAIN_SHIFT, | |
130 | .gain = rpr0521_pxs_gain, | |
131 | .size = ARRAY_SIZE(rpr0521_pxs_gain), | |
132 | }, | |
133 | }; | |
134 | ||
135 | struct rpr0521_data { | |
136 | struct i2c_client *client; | |
137 | ||
138 | /* protect device params updates (e.g state, gain) */ | |
139 | struct mutex lock; | |
140 | ||
141 | /* device active status */ | |
142 | bool als_dev_en; | |
143 | bool pxs_dev_en; | |
144 | ||
145 | /* optimize runtime pm ops - enable device only if needed */ | |
146 | bool als_ps_need_en; | |
147 | bool pxs_ps_need_en; | |
148 | ||
149 | struct regmap *regmap; | |
150 | }; | |
151 | ||
152 | static IIO_CONST_ATTR(in_intensity_scale_available, RPR0521_ALS_SCALE_AVAIL); | |
153 | static IIO_CONST_ATTR(in_proximity_scale_available, RPR0521_PXS_SCALE_AVAIL); | |
154 | ||
155 | static struct attribute *rpr0521_attributes[] = { | |
156 | &iio_const_attr_in_intensity_scale_available.dev_attr.attr, | |
157 | &iio_const_attr_in_proximity_scale_available.dev_attr.attr, | |
158 | NULL, | |
159 | }; | |
160 | ||
161 | static const struct attribute_group rpr0521_attribute_group = { | |
162 | .attrs = rpr0521_attributes, | |
163 | }; | |
164 | ||
165 | static const struct iio_chan_spec rpr0521_channels[] = { | |
166 | { | |
167 | .type = IIO_INTENSITY, | |
168 | .modified = 1, | |
169 | .address = RPR0521_CHAN_ALS_DATA0, | |
170 | .channel2 = IIO_MOD_LIGHT_BOTH, | |
171 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | | |
172 | BIT(IIO_CHAN_INFO_SCALE), | |
173 | }, | |
174 | { | |
175 | .type = IIO_INTENSITY, | |
176 | .modified = 1, | |
177 | .address = RPR0521_CHAN_ALS_DATA1, | |
178 | .channel2 = IIO_MOD_LIGHT_IR, | |
179 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | | |
180 | BIT(IIO_CHAN_INFO_SCALE), | |
181 | }, | |
182 | { | |
183 | .type = IIO_PROXIMITY, | |
184 | .address = RPR0521_CHAN_PXS, | |
185 | .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | | |
186 | BIT(IIO_CHAN_INFO_SCALE), | |
187 | } | |
188 | }; | |
189 | ||
190 | static int rpr0521_als_enable(struct rpr0521_data *data, u8 status) | |
191 | { | |
192 | int ret; | |
193 | ||
194 | ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL, | |
195 | RPR0521_MODE_ALS_MASK, | |
196 | status); | |
197 | if (ret < 0) | |
198 | return ret; | |
199 | ||
200 | data->als_dev_en = true; | |
201 | ||
202 | return 0; | |
203 | } | |
204 | ||
205 | static int rpr0521_pxs_enable(struct rpr0521_data *data, u8 status) | |
206 | { | |
207 | int ret; | |
208 | ||
209 | ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL, | |
210 | RPR0521_MODE_PXS_MASK, | |
211 | status); | |
212 | if (ret < 0) | |
213 | return ret; | |
214 | ||
215 | data->pxs_dev_en = true; | |
216 | ||
217 | return 0; | |
218 | } | |
219 | ||
220 | /** | |
221 | * rpr0521_set_power_state - handles runtime PM state and sensors enabled status | |
222 | * | |
223 | * @data: rpr0521 device private data | |
224 | * @on: state to be set for devices in @device_mask | |
225 | * @device_mask: bitmask specifying for which device we need to update @on state | |
226 | * | |
227 | * We rely on rpr0521_runtime_resume to enable our @device_mask devices, but | |
228 | * if (for example) PXS was enabled (pxs_dev_en = true) by a previous call to | |
229 | * rpr0521_runtime_resume and we want to enable ALS we MUST set ALS enable | |
230 | * bit of RPR0521_REG_MODE_CTRL here because rpr0521_runtime_resume will not | |
231 | * be called twice. | |
232 | */ | |
233 | static int rpr0521_set_power_state(struct rpr0521_data *data, bool on, | |
234 | u8 device_mask) | |
235 | { | |
236 | #ifdef CONFIG_PM | |
237 | int ret; | |
238 | u8 update_mask = 0; | |
239 | ||
240 | if (device_mask & RPR0521_MODE_ALS_MASK) { | |
241 | if (on && !data->als_ps_need_en && data->pxs_dev_en) | |
242 | update_mask |= RPR0521_MODE_ALS_MASK; | |
243 | else | |
244 | data->als_ps_need_en = on; | |
245 | } | |
246 | ||
247 | if (device_mask & RPR0521_MODE_PXS_MASK) { | |
248 | if (on && !data->pxs_ps_need_en && data->als_dev_en) | |
249 | update_mask |= RPR0521_MODE_PXS_MASK; | |
250 | else | |
251 | data->pxs_ps_need_en = on; | |
252 | } | |
253 | ||
254 | if (update_mask) { | |
255 | ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL, | |
256 | update_mask, update_mask); | |
257 | if (ret < 0) | |
258 | return ret; | |
259 | } | |
260 | ||
261 | if (on) { | |
262 | ret = pm_runtime_get_sync(&data->client->dev); | |
263 | } else { | |
264 | pm_runtime_mark_last_busy(&data->client->dev); | |
265 | ret = pm_runtime_put_autosuspend(&data->client->dev); | |
266 | } | |
267 | if (ret < 0) { | |
268 | dev_err(&data->client->dev, | |
269 | "Failed: rpr0521_set_power_state for %d, ret %d\n", | |
270 | on, ret); | |
271 | if (on) | |
272 | pm_runtime_put_noidle(&data->client->dev); | |
273 | ||
274 | return ret; | |
275 | } | |
276 | #endif | |
277 | return 0; | |
278 | } | |
279 | ||
280 | static int rpr0521_get_gain(struct rpr0521_data *data, int chan, | |
281 | int *val, int *val2) | |
282 | { | |
283 | int ret, reg, idx; | |
284 | ||
285 | ret = regmap_read(data->regmap, rpr0521_gain[chan].reg, ®); | |
286 | if (ret < 0) | |
287 | return ret; | |
288 | ||
289 | idx = (rpr0521_gain[chan].mask & reg) >> rpr0521_gain[chan].shift; | |
290 | *val = rpr0521_gain[chan].gain[idx].scale; | |
291 | *val2 = rpr0521_gain[chan].gain[idx].uscale; | |
292 | ||
293 | return 0; | |
294 | } | |
295 | ||
296 | static int rpr0521_set_gain(struct rpr0521_data *data, int chan, | |
297 | int val, int val2) | |
298 | { | |
299 | int i, idx = -EINVAL; | |
300 | ||
301 | /* get gain index */ | |
302 | for (i = 0; i < rpr0521_gain[chan].size; i++) | |
303 | if (val == rpr0521_gain[chan].gain[i].scale && | |
304 | val2 == rpr0521_gain[chan].gain[i].uscale) { | |
305 | idx = i; | |
306 | break; | |
307 | } | |
308 | ||
309 | if (idx < 0) | |
310 | return idx; | |
311 | ||
312 | return regmap_update_bits(data->regmap, rpr0521_gain[chan].reg, | |
313 | rpr0521_gain[chan].mask, | |
314 | idx << rpr0521_gain[chan].shift); | |
315 | } | |
316 | ||
317 | static int rpr0521_read_raw(struct iio_dev *indio_dev, | |
318 | struct iio_chan_spec const *chan, int *val, | |
319 | int *val2, long mask) | |
320 | { | |
321 | struct rpr0521_data *data = iio_priv(indio_dev); | |
322 | int ret; | |
323 | u8 device_mask; | |
324 | __le16 raw_data; | |
325 | ||
326 | switch (mask) { | |
327 | case IIO_CHAN_INFO_RAW: | |
328 | if (chan->type != IIO_INTENSITY && chan->type != IIO_PROXIMITY) | |
329 | return -EINVAL; | |
330 | ||
331 | device_mask = rpr0521_data_reg[chan->address].device_mask; | |
332 | ||
333 | mutex_lock(&data->lock); | |
334 | ret = rpr0521_set_power_state(data, true, device_mask); | |
335 | if (ret < 0) { | |
336 | mutex_unlock(&data->lock); | |
337 | return ret; | |
338 | } | |
339 | ||
340 | ret = regmap_bulk_read(data->regmap, | |
341 | rpr0521_data_reg[chan->address].address, | |
342 | &raw_data, 2); | |
343 | if (ret < 0) { | |
344 | rpr0521_set_power_state(data, false, device_mask); | |
345 | mutex_unlock(&data->lock); | |
346 | return ret; | |
347 | } | |
348 | ||
349 | ret = rpr0521_set_power_state(data, false, device_mask); | |
350 | mutex_unlock(&data->lock); | |
351 | if (ret < 0) | |
352 | return ret; | |
353 | ||
354 | *val = le16_to_cpu(raw_data); | |
355 | ||
356 | return IIO_VAL_INT; | |
357 | case IIO_CHAN_INFO_SCALE: | |
358 | mutex_lock(&data->lock); | |
359 | ret = rpr0521_get_gain(data, chan->address, val, val2); | |
360 | mutex_unlock(&data->lock); | |
361 | if (ret < 0) | |
362 | return ret; | |
363 | ||
364 | return IIO_VAL_INT_PLUS_MICRO; | |
365 | default: | |
366 | return -EINVAL; | |
367 | } | |
368 | } | |
369 | ||
370 | static int rpr0521_write_raw(struct iio_dev *indio_dev, | |
371 | struct iio_chan_spec const *chan, int val, | |
372 | int val2, long mask) | |
373 | { | |
374 | struct rpr0521_data *data = iio_priv(indio_dev); | |
375 | int ret; | |
376 | ||
377 | switch (mask) { | |
378 | case IIO_CHAN_INFO_SCALE: | |
379 | mutex_lock(&data->lock); | |
380 | ret = rpr0521_set_gain(data, chan->address, val, val2); | |
381 | mutex_unlock(&data->lock); | |
382 | ||
383 | return ret; | |
384 | default: | |
385 | return -EINVAL; | |
386 | } | |
387 | } | |
388 | ||
389 | static const struct iio_info rpr0521_info = { | |
390 | .driver_module = THIS_MODULE, | |
391 | .read_raw = rpr0521_read_raw, | |
392 | .write_raw = rpr0521_write_raw, | |
393 | .attrs = &rpr0521_attribute_group, | |
394 | }; | |
395 | ||
396 | static int rpr0521_init(struct rpr0521_data *data) | |
397 | { | |
398 | int ret; | |
399 | int id; | |
400 | ||
401 | ret = regmap_read(data->regmap, RPR0521_REG_ID, &id); | |
402 | if (ret < 0) { | |
403 | dev_err(&data->client->dev, "Failed to read REG_ID register\n"); | |
404 | return ret; | |
405 | } | |
406 | ||
407 | if (id != RPR0521_MANUFACT_ID) { | |
408 | dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n", | |
409 | id, RPR0521_MANUFACT_ID); | |
410 | return -ENODEV; | |
411 | } | |
412 | ||
413 | /* set default measurement time - 100 ms for both ALS and PS */ | |
414 | ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL, | |
415 | RPR0521_MODE_MEAS_TIME_MASK, | |
416 | RPR0521_DEFAULT_MEAS_TIME); | |
417 | if (ret) { | |
418 | pr_err("regmap_update_bits returned %d\n", ret); | |
419 | return ret; | |
420 | } | |
421 | ||
422 | ret = rpr0521_als_enable(data, RPR0521_MODE_ALS_ENABLE); | |
423 | if (ret < 0) | |
424 | return ret; | |
425 | ret = rpr0521_pxs_enable(data, RPR0521_MODE_PXS_ENABLE); | |
426 | if (ret < 0) | |
427 | return ret; | |
428 | ||
429 | return 0; | |
430 | } | |
431 | ||
432 | static int rpr0521_poweroff(struct rpr0521_data *data) | |
433 | { | |
434 | int ret; | |
435 | ||
436 | ret = regmap_update_bits(data->regmap, RPR0521_REG_MODE_CTRL, | |
437 | RPR0521_MODE_ALS_MASK | | |
438 | RPR0521_MODE_PXS_MASK, | |
439 | RPR0521_MODE_ALS_DISABLE | | |
440 | RPR0521_MODE_PXS_DISABLE); | |
441 | if (ret < 0) | |
442 | return ret; | |
443 | ||
444 | data->als_dev_en = false; | |
445 | data->pxs_dev_en = false; | |
446 | ||
447 | return 0; | |
448 | } | |
449 | ||
450 | static bool rpr0521_is_volatile_reg(struct device *dev, unsigned int reg) | |
451 | { | |
452 | switch (reg) { | |
453 | case RPR0521_REG_MODE_CTRL: | |
454 | case RPR0521_REG_ALS_CTRL: | |
455 | case RPR0521_REG_PXS_CTRL: | |
456 | return false; | |
457 | default: | |
458 | return true; | |
459 | } | |
460 | } | |
461 | ||
462 | static const struct regmap_config rpr0521_regmap_config = { | |
463 | .name = RPR0521_REGMAP_NAME, | |
464 | ||
465 | .reg_bits = 8, | |
466 | .val_bits = 8, | |
467 | ||
468 | .max_register = RPR0521_REG_ID, | |
469 | .cache_type = REGCACHE_RBTREE, | |
470 | .volatile_reg = rpr0521_is_volatile_reg, | |
471 | }; | |
472 | ||
473 | static int rpr0521_probe(struct i2c_client *client, | |
474 | const struct i2c_device_id *id) | |
475 | { | |
476 | struct rpr0521_data *data; | |
477 | struct iio_dev *indio_dev; | |
478 | struct regmap *regmap; | |
479 | int ret; | |
480 | ||
481 | indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); | |
482 | if (!indio_dev) | |
483 | return -ENOMEM; | |
484 | ||
485 | regmap = devm_regmap_init_i2c(client, &rpr0521_regmap_config); | |
486 | if (IS_ERR(regmap)) { | |
487 | dev_err(&client->dev, "regmap_init failed!\n"); | |
488 | return PTR_ERR(regmap); | |
489 | } | |
490 | ||
491 | data = iio_priv(indio_dev); | |
492 | i2c_set_clientdata(client, indio_dev); | |
493 | data->client = client; | |
494 | data->regmap = regmap; | |
495 | ||
496 | mutex_init(&data->lock); | |
497 | ||
498 | indio_dev->dev.parent = &client->dev; | |
499 | indio_dev->info = &rpr0521_info; | |
500 | indio_dev->name = RPR0521_DRV_NAME; | |
501 | indio_dev->channels = rpr0521_channels; | |
502 | indio_dev->num_channels = ARRAY_SIZE(rpr0521_channels); | |
503 | indio_dev->modes = INDIO_DIRECT_MODE; | |
504 | ||
505 | ret = rpr0521_init(data); | |
506 | if (ret < 0) { | |
507 | dev_err(&client->dev, "rpr0521 chip init failed\n"); | |
508 | return ret; | |
509 | } | |
efa86e9f DB |
510 | |
511 | ret = pm_runtime_set_active(&client->dev); | |
512 | if (ret < 0) | |
7d0ead5c | 513 | return ret; |
efa86e9f DB |
514 | |
515 | pm_runtime_enable(&client->dev); | |
516 | pm_runtime_set_autosuspend_delay(&client->dev, RPR0521_SLEEP_DELAY_MS); | |
517 | pm_runtime_use_autosuspend(&client->dev); | |
518 | ||
7d0ead5c | 519 | return iio_device_register(indio_dev); |
efa86e9f DB |
520 | } |
521 | ||
522 | static int rpr0521_remove(struct i2c_client *client) | |
523 | { | |
524 | struct iio_dev *indio_dev = i2c_get_clientdata(client); | |
525 | ||
7d0ead5c AR |
526 | iio_device_unregister(indio_dev); |
527 | ||
efa86e9f DB |
528 | pm_runtime_disable(&client->dev); |
529 | pm_runtime_set_suspended(&client->dev); | |
530 | pm_runtime_put_noidle(&client->dev); | |
531 | ||
efa86e9f DB |
532 | rpr0521_poweroff(iio_priv(indio_dev)); |
533 | ||
534 | return 0; | |
535 | } | |
536 | ||
537 | #ifdef CONFIG_PM | |
538 | static int rpr0521_runtime_suspend(struct device *dev) | |
539 | { | |
540 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); | |
541 | struct rpr0521_data *data = iio_priv(indio_dev); | |
542 | int ret; | |
543 | ||
544 | /* disable channels and sets {als,pxs}_dev_en to false */ | |
545 | mutex_lock(&data->lock); | |
546 | ret = rpr0521_poweroff(data); | |
547 | mutex_unlock(&data->lock); | |
548 | ||
549 | return ret; | |
550 | } | |
551 | ||
552 | static int rpr0521_runtime_resume(struct device *dev) | |
553 | { | |
554 | struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); | |
555 | struct rpr0521_data *data = iio_priv(indio_dev); | |
556 | int ret; | |
557 | ||
558 | if (data->als_ps_need_en) { | |
559 | ret = rpr0521_als_enable(data, RPR0521_MODE_ALS_ENABLE); | |
560 | if (ret < 0) | |
561 | return ret; | |
562 | data->als_ps_need_en = false; | |
563 | } | |
564 | ||
565 | if (data->pxs_ps_need_en) { | |
566 | ret = rpr0521_pxs_enable(data, RPR0521_MODE_PXS_ENABLE); | |
567 | if (ret < 0) | |
568 | return ret; | |
569 | data->pxs_ps_need_en = false; | |
570 | } | |
571 | ||
572 | return 0; | |
573 | } | |
574 | #endif | |
575 | ||
576 | static const struct dev_pm_ops rpr0521_pm_ops = { | |
577 | SET_RUNTIME_PM_OPS(rpr0521_runtime_suspend, | |
578 | rpr0521_runtime_resume, NULL) | |
579 | }; | |
580 | ||
581 | static const struct acpi_device_id rpr0521_acpi_match[] = { | |
582 | {"RPR0521", 0}, | |
583 | { } | |
584 | }; | |
585 | MODULE_DEVICE_TABLE(acpi, rpr0521_acpi_match); | |
586 | ||
587 | static const struct i2c_device_id rpr0521_id[] = { | |
588 | {"rpr0521", 0}, | |
589 | { } | |
590 | }; | |
591 | ||
592 | MODULE_DEVICE_TABLE(i2c, rpr0521_id); | |
593 | ||
594 | static struct i2c_driver rpr0521_driver = { | |
595 | .driver = { | |
596 | .name = RPR0521_DRV_NAME, | |
597 | .pm = &rpr0521_pm_ops, | |
598 | .acpi_match_table = ACPI_PTR(rpr0521_acpi_match), | |
599 | }, | |
600 | .probe = rpr0521_probe, | |
601 | .remove = rpr0521_remove, | |
602 | .id_table = rpr0521_id, | |
603 | }; | |
604 | ||
605 | module_i2c_driver(rpr0521_driver); | |
606 | ||
607 | MODULE_AUTHOR("Daniel Baluta <daniel.baluta@intel.com>"); | |
608 | MODULE_DESCRIPTION("RPR0521 ROHM Ambient Light and Proximity Sensor driver"); | |
609 | MODULE_LICENSE("GPL v2"); |