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treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / iio / light / stk3310.c
blob185c24a75ae6fa2fadfc8c9736a3c550e865b42a
1 // SPDX-License-Identifier: GPL-2.0-only
2 /**
3 * Sensortek STK3310/STK3311 Ambient Light and Proximity Sensor
4 *
5 * Copyright (c) 2015, Intel Corporation.
6 *
7 * IIO driver for STK3310/STK3311. 7-bit I2C address: 0x48.
8 */
9
10 #include <linux/acpi.h>
11 #include <linux/i2c.h>
12 #include <linux/interrupt.h>
13 #include <linux/kernel.h>
14 #include <linux/module.h>
15 #include <linux/regmap.h>
16 #include <linux/iio/events.h>
17 #include <linux/iio/iio.h>
18 #include <linux/iio/sysfs.h>
19
20 #define STK3310_REG_STATE 0x00
21 #define STK3310_REG_PSCTRL 0x01
22 #define STK3310_REG_ALSCTRL 0x02
23 #define STK3310_REG_INT 0x04
24 #define STK3310_REG_THDH_PS 0x06
25 #define STK3310_REG_THDL_PS 0x08
26 #define STK3310_REG_FLAG 0x10
27 #define STK3310_REG_PS_DATA_MSB 0x11
28 #define STK3310_REG_PS_DATA_LSB 0x12
29 #define STK3310_REG_ALS_DATA_MSB 0x13
30 #define STK3310_REG_ALS_DATA_LSB 0x14
31 #define STK3310_REG_ID 0x3E
32 #define STK3310_MAX_REG 0x80
33
34 #define STK3310_STATE_EN_PS BIT(0)
35 #define STK3310_STATE_EN_ALS BIT(1)
36 #define STK3310_STATE_STANDBY 0x00
37
38 #define STK3310_CHIP_ID_VAL 0x13
39 #define STK3311_CHIP_ID_VAL 0x1D
40 #define STK3335_CHIP_ID_VAL 0x51
41 #define STK3310_PSINT_EN 0x01
42 #define STK3310_PS_MAX_VAL 0xFFFF
43
44 #define STK3310_DRIVER_NAME "stk3310"
45 #define STK3310_REGMAP_NAME "stk3310_regmap"
46 #define STK3310_EVENT "stk3310_event"
47
48 #define STK3310_SCALE_AVAILABLE "6.4 1.6 0.4 0.1"
49
50 #define STK3310_IT_AVAILABLE \
51 "0.000185 0.000370 0.000741 0.001480 0.002960 0.005920 0.011840 " \
52 "0.023680 0.047360 0.094720 0.189440 0.378880 0.757760 1.515520 " \
53 "3.031040 6.062080"
54
55 #define STK3310_REGFIELD(name) \
56 do { \
57 data->reg_##name = \
58 devm_regmap_field_alloc(&client->dev, regmap, \
59 stk3310_reg_field_##name); \
60 if (IS_ERR(data->reg_##name)) { \
61 dev_err(&client->dev, "reg field alloc failed.\n"); \
62 return PTR_ERR(data->reg_##name); \
63 } \
64 } while (0)
65
66 static const struct reg_field stk3310_reg_field_state =
67 REG_FIELD(STK3310_REG_STATE, 0, 2);
68 static const struct reg_field stk3310_reg_field_als_gain =
69 REG_FIELD(STK3310_REG_ALSCTRL, 4, 5);
70 static const struct reg_field stk3310_reg_field_ps_gain =
71 REG_FIELD(STK3310_REG_PSCTRL, 4, 5);
72 static const struct reg_field stk3310_reg_field_als_it =
73 REG_FIELD(STK3310_REG_ALSCTRL, 0, 3);
74 static const struct reg_field stk3310_reg_field_ps_it =
75 REG_FIELD(STK3310_REG_PSCTRL, 0, 3);
76 static const struct reg_field stk3310_reg_field_int_ps =
77 REG_FIELD(STK3310_REG_INT, 0, 2);
78 static const struct reg_field stk3310_reg_field_flag_psint =
79 REG_FIELD(STK3310_REG_FLAG, 4, 4);
80 static const struct reg_field stk3310_reg_field_flag_nf =
81 REG_FIELD(STK3310_REG_FLAG, 0, 0);
82
83 /* Estimate maximum proximity values with regard to measurement scale. */
84 static const int stk3310_ps_max[4] = {
85 STK3310_PS_MAX_VAL / 640,
86 STK3310_PS_MAX_VAL / 160,
87 STK3310_PS_MAX_VAL / 40,
88 STK3310_PS_MAX_VAL / 10
89 };
90
91 static const int stk3310_scale_table[][2] = {
92 {6, 400000}, {1, 600000}, {0, 400000}, {0, 100000}
93 };
94
95 /* Integration time in seconds, microseconds */
96 static const int stk3310_it_table[][2] = {
97 {0, 185}, {0, 370}, {0, 741}, {0, 1480},
98 {0, 2960}, {0, 5920}, {0, 11840}, {0, 23680},
99 {0, 47360}, {0, 94720}, {0, 189440}, {0, 378880},
100 {0, 757760}, {1, 515520}, {3, 31040}, {6, 62080},
101 };
102
103 struct stk3310_data {
104 struct i2c_client *client;
105 struct mutex lock;
106 bool als_enabled;
107 bool ps_enabled;
108 u64 timestamp;
109 struct regmap *regmap;
110 struct regmap_field *reg_state;
111 struct regmap_field *reg_als_gain;
112 struct regmap_field *reg_ps_gain;
113 struct regmap_field *reg_als_it;
114 struct regmap_field *reg_ps_it;
115 struct regmap_field *reg_int_ps;
116 struct regmap_field *reg_flag_psint;
117 struct regmap_field *reg_flag_nf;
118 };
119
120 static const struct iio_event_spec stk3310_events[] = {
121 /* Proximity event */
122 {
123 .type = IIO_EV_TYPE_THRESH,
124 .dir = IIO_EV_DIR_RISING,
125 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
126 BIT(IIO_EV_INFO_ENABLE),
127 },
128 /* Out-of-proximity event */
129 {
130 .type = IIO_EV_TYPE_THRESH,
131 .dir = IIO_EV_DIR_FALLING,
132 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
133 BIT(IIO_EV_INFO_ENABLE),
134 },
135 };
136
137 static const struct iio_chan_spec stk3310_channels[] = {
138 {
139 .type = IIO_LIGHT,
140 .info_mask_separate =
141 BIT(IIO_CHAN_INFO_RAW) |
142 BIT(IIO_CHAN_INFO_SCALE) |
143 BIT(IIO_CHAN_INFO_INT_TIME),
144 },
145 {
146 .type = IIO_PROXIMITY,
147 .info_mask_separate =
148 BIT(IIO_CHAN_INFO_RAW) |
149 BIT(IIO_CHAN_INFO_SCALE) |
150 BIT(IIO_CHAN_INFO_INT_TIME),
151 .event_spec = stk3310_events,
152 .num_event_specs = ARRAY_SIZE(stk3310_events),
153 }
154 };
155
156 static IIO_CONST_ATTR(in_illuminance_scale_available, STK3310_SCALE_AVAILABLE);
157
158 static IIO_CONST_ATTR(in_proximity_scale_available, STK3310_SCALE_AVAILABLE);
159
160 static IIO_CONST_ATTR(in_illuminance_integration_time_available,
161 STK3310_IT_AVAILABLE);
162
163 static IIO_CONST_ATTR(in_proximity_integration_time_available,
164 STK3310_IT_AVAILABLE);
165
166 static struct attribute *stk3310_attributes[] = {
167 &iio_const_attr_in_illuminance_scale_available.dev_attr.attr,
168 &iio_const_attr_in_proximity_scale_available.dev_attr.attr,
169 &iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr,
170 &iio_const_attr_in_proximity_integration_time_available.dev_attr.attr,
171 NULL,
172 };
173
174 static const struct attribute_group stk3310_attribute_group = {
175 .attrs = stk3310_attributes
176 };
177
178 static int stk3310_get_index(const int table[][2], int table_size,
179 int val, int val2)
180 {
181 int i;
182
183 for (i = 0; i < table_size; i++) {
184 if (val == table[i][0] && val2 == table[i][1])
185 return i;
186 }
187
188 return -EINVAL;
189 }
190
191 static int stk3310_read_event(struct iio_dev *indio_dev,
192 const struct iio_chan_spec *chan,
193 enum iio_event_type type,
194 enum iio_event_direction dir,
195 enum iio_event_info info,
196 int *val, int *val2)
197 {
198 u8 reg;
199 __be16 buf;
200 int ret;
201 struct stk3310_data *data = iio_priv(indio_dev);
202
203 if (info != IIO_EV_INFO_VALUE)
204 return -EINVAL;
205
206 /* Only proximity interrupts are implemented at the moment. */
207 if (dir == IIO_EV_DIR_RISING)
208 reg = STK3310_REG_THDH_PS;
209 else if (dir == IIO_EV_DIR_FALLING)
210 reg = STK3310_REG_THDL_PS;
211 else
212 return -EINVAL;
213
214 mutex_lock(&data->lock);
215 ret = regmap_bulk_read(data->regmap, reg, &buf, 2);
216 mutex_unlock(&data->lock);
217 if (ret < 0) {
218 dev_err(&data->client->dev, "register read failed\n");
219 return ret;
220 }
221 *val = be16_to_cpu(buf);
222
223 return IIO_VAL_INT;
224 }
225
226 static int stk3310_write_event(struct iio_dev *indio_dev,
227 const struct iio_chan_spec *chan,
228 enum iio_event_type type,
229 enum iio_event_direction dir,
230 enum iio_event_info info,
231 int val, int val2)
232 {
233 u8 reg;
234 __be16 buf;
235 int ret;
236 unsigned int index;
237 struct stk3310_data *data = iio_priv(indio_dev);
238 struct i2c_client *client = data->client;
239
240 ret = regmap_field_read(data->reg_ps_gain, &index);
241 if (ret < 0)
242 return ret;
243
244 if (val < 0 || val > stk3310_ps_max[index])
245 return -EINVAL;
246
247 if (dir == IIO_EV_DIR_RISING)
248 reg = STK3310_REG_THDH_PS;
249 else if (dir == IIO_EV_DIR_FALLING)
250 reg = STK3310_REG_THDL_PS;
251 else
252 return -EINVAL;
253
254 buf = cpu_to_be16(val);
255 ret = regmap_bulk_write(data->regmap, reg, &buf, 2);
256 if (ret < 0)
257 dev_err(&client->dev, "failed to set PS threshold!\n");
258
259 return ret;
260 }
261
262 static int stk3310_read_event_config(struct iio_dev *indio_dev,
263 const struct iio_chan_spec *chan,
264 enum iio_event_type type,
265 enum iio_event_direction dir)
266 {
267 unsigned int event_val;
268 int ret;
269 struct stk3310_data *data = iio_priv(indio_dev);
270
271 ret = regmap_field_read(data->reg_int_ps, &event_val);
272 if (ret < 0)
273 return ret;
274
275 return event_val;
276 }
277
278 static int stk3310_write_event_config(struct iio_dev *indio_dev,
279 const struct iio_chan_spec *chan,
280 enum iio_event_type type,
281 enum iio_event_direction dir,
282 int state)
283 {
284 int ret;
285 struct stk3310_data *data = iio_priv(indio_dev);
286 struct i2c_client *client = data->client;
287
288 if (state < 0 || state > 7)
289 return -EINVAL;
290
291 /* Set INT_PS value */
292 mutex_lock(&data->lock);
293 ret = regmap_field_write(data->reg_int_ps, state);
294 if (ret < 0)
295 dev_err(&client->dev, "failed to set interrupt mode\n");
296 mutex_unlock(&data->lock);
297
298 return ret;
299 }
300
301 static int stk3310_read_raw(struct iio_dev *indio_dev,
302 struct iio_chan_spec const *chan,
303 int *val, int *val2, long mask)
304 {
305 u8 reg;
306 __be16 buf;
307 int ret;
308 unsigned int index;
309 struct stk3310_data *data = iio_priv(indio_dev);
310 struct i2c_client *client = data->client;
311
312 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)
313 return -EINVAL;
314
315 switch (mask) {
316 case IIO_CHAN_INFO_RAW:
317 if (chan->type == IIO_LIGHT)
318 reg = STK3310_REG_ALS_DATA_MSB;
319 else
320 reg = STK3310_REG_PS_DATA_MSB;
321
322 mutex_lock(&data->lock);
323 ret = regmap_bulk_read(data->regmap, reg, &buf, 2);
324 if (ret < 0) {
325 dev_err(&client->dev, "register read failed\n");
326 mutex_unlock(&data->lock);
327 return ret;
328 }
329 *val = be16_to_cpu(buf);
330 mutex_unlock(&data->lock);
331 return IIO_VAL_INT;
332 case IIO_CHAN_INFO_INT_TIME:
333 if (chan->type == IIO_LIGHT)
334 ret = regmap_field_read(data->reg_als_it, &index);
335 else
336 ret = regmap_field_read(data->reg_ps_it, &index);
337 if (ret < 0)
338 return ret;
339
340 *val = stk3310_it_table[index][0];
341 *val2 = stk3310_it_table[index][1];
342 return IIO_VAL_INT_PLUS_MICRO;
343 case IIO_CHAN_INFO_SCALE:
344 if (chan->type == IIO_LIGHT)
345 ret = regmap_field_read(data->reg_als_gain, &index);
346 else
347 ret = regmap_field_read(data->reg_ps_gain, &index);
348 if (ret < 0)
349 return ret;
350
351 *val = stk3310_scale_table[index][0];
352 *val2 = stk3310_scale_table[index][1];
353 return IIO_VAL_INT_PLUS_MICRO;
354 }
355
356 return -EINVAL;
357 }
358
359 static int stk3310_write_raw(struct iio_dev *indio_dev,
360 struct iio_chan_spec const *chan,
361 int val, int val2, long mask)
362 {
363 int ret;
364 int index;
365 struct stk3310_data *data = iio_priv(indio_dev);
366
367 if (chan->type != IIO_LIGHT && chan->type != IIO_PROXIMITY)
368 return -EINVAL;
369
370 switch (mask) {
371 case IIO_CHAN_INFO_INT_TIME:
372 index = stk3310_get_index(stk3310_it_table,
373 ARRAY_SIZE(stk3310_it_table),
374 val, val2);
375 if (index < 0)
376 return -EINVAL;
377 mutex_lock(&data->lock);
378 if (chan->type == IIO_LIGHT)
379 ret = regmap_field_write(data->reg_als_it, index);
380 else
381 ret = regmap_field_write(data->reg_ps_it, index);
382 if (ret < 0)
383 dev_err(&data->client->dev,
384 "sensor configuration failed\n");
385 mutex_unlock(&data->lock);
386 return ret;
387
388 case IIO_CHAN_INFO_SCALE:
389 index = stk3310_get_index(stk3310_scale_table,
390 ARRAY_SIZE(stk3310_scale_table),
391 val, val2);
392 if (index < 0)
393 return -EINVAL;
394 mutex_lock(&data->lock);
395 if (chan->type == IIO_LIGHT)
396 ret = regmap_field_write(data->reg_als_gain, index);
397 else
398 ret = regmap_field_write(data->reg_ps_gain, index);
399 if (ret < 0)
400 dev_err(&data->client->dev,
401 "sensor configuration failed\n");
402 mutex_unlock(&data->lock);
403 return ret;
404 }
405
406 return -EINVAL;
407 }
408
409 static const struct iio_info stk3310_info = {
410 .read_raw = stk3310_read_raw,
411 .write_raw = stk3310_write_raw,
412 .attrs = &stk3310_attribute_group,
413 .read_event_value = stk3310_read_event,
414 .write_event_value = stk3310_write_event,
415 .read_event_config = stk3310_read_event_config,
416 .write_event_config = stk3310_write_event_config,
417 };
418
419 static int stk3310_set_state(struct stk3310_data *data, u8 state)
420 {
421 int ret;
422 struct i2c_client *client = data->client;
423
424 /* 3-bit state; 0b100 is not supported. */
425 if (state > 7 || state == 4)
426 return -EINVAL;
427
428 mutex_lock(&data->lock);
429 ret = regmap_field_write(data->reg_state, state);
430 if (ret < 0) {
431 dev_err(&client->dev, "failed to change sensor state\n");
432 } else if (state != STK3310_STATE_STANDBY) {
433 /* Don't reset the 'enabled' flags if we're going in standby */
434 data->ps_enabled = !!(state & STK3310_STATE_EN_PS);
435 data->als_enabled = !!(state & STK3310_STATE_EN_ALS);
436 }
437 mutex_unlock(&data->lock);
438
439 return ret;
440 }
441
442 static int stk3310_init(struct iio_dev *indio_dev)
443 {
444 int ret;
445 int chipid;
446 u8 state;
447 struct stk3310_data *data = iio_priv(indio_dev);
448 struct i2c_client *client = data->client;
449
450 ret = regmap_read(data->regmap, STK3310_REG_ID, &chipid);
451 if (ret < 0)
452 return ret;
453
454 if (chipid != STK3310_CHIP_ID_VAL &&
455 chipid != STK3311_CHIP_ID_VAL &&
456 chipid != STK3335_CHIP_ID_VAL) {
457 dev_err(&client->dev, "invalid chip id: 0x%x\n", chipid);
458 return -ENODEV;
459 }
460
461 state = STK3310_STATE_EN_ALS | STK3310_STATE_EN_PS;
462 ret = stk3310_set_state(data, state);
463 if (ret < 0) {
464 dev_err(&client->dev, "failed to enable sensor");
465 return ret;
466 }
467
468 /* Enable PS interrupts */
469 ret = regmap_field_write(data->reg_int_ps, STK3310_PSINT_EN);
470 if (ret < 0)
471 dev_err(&client->dev, "failed to enable interrupts!\n");
472
473 return ret;
474 }
475
476 static bool stk3310_is_volatile_reg(struct device *dev, unsigned int reg)
477 {
478 switch (reg) {
479 case STK3310_REG_ALS_DATA_MSB:
480 case STK3310_REG_ALS_DATA_LSB:
481 case STK3310_REG_PS_DATA_LSB:
482 case STK3310_REG_PS_DATA_MSB:
483 case STK3310_REG_FLAG:
484 return true;
485 default:
486 return false;
487 }
488 }
489
490 static struct regmap_config stk3310_regmap_config = {
491 .name = STK3310_REGMAP_NAME,
492 .reg_bits = 8,
493 .val_bits = 8,
494 .max_register = STK3310_MAX_REG,
495 .cache_type = REGCACHE_RBTREE,
496 .volatile_reg = stk3310_is_volatile_reg,
497 };
498
499 static int stk3310_regmap_init(struct stk3310_data *data)
500 {
501 struct regmap *regmap;
502 struct i2c_client *client;
503
504 client = data->client;
505 regmap = devm_regmap_init_i2c(client, &stk3310_regmap_config);
506 if (IS_ERR(regmap)) {
507 dev_err(&client->dev, "regmap initialization failed.\n");
508 return PTR_ERR(regmap);
509 }
510 data->regmap = regmap;
511
512 STK3310_REGFIELD(state);
513 STK3310_REGFIELD(als_gain);
514 STK3310_REGFIELD(ps_gain);
515 STK3310_REGFIELD(als_it);
516 STK3310_REGFIELD(ps_it);
517 STK3310_REGFIELD(int_ps);
518 STK3310_REGFIELD(flag_psint);
519 STK3310_REGFIELD(flag_nf);
520
521 return 0;
522 }
523
524 static irqreturn_t stk3310_irq_handler(int irq, void *private)
525 {
526 struct iio_dev *indio_dev = private;
527 struct stk3310_data *data = iio_priv(indio_dev);
528
529 data->timestamp = iio_get_time_ns(indio_dev);
530
531 return IRQ_WAKE_THREAD;
532 }
533
534 static irqreturn_t stk3310_irq_event_handler(int irq, void *private)
535 {
536 int ret;
537 unsigned int dir;
538 u64 event;
539
540 struct iio_dev *indio_dev = private;
541 struct stk3310_data *data = iio_priv(indio_dev);
542
543 /* Read FLAG_NF to figure out what threshold has been met. */
544 mutex_lock(&data->lock);
545 ret = regmap_field_read(data->reg_flag_nf, &dir);
546 if (ret < 0) {
547 dev_err(&data->client->dev, "register read failed\n");
548 mutex_unlock(&data->lock);
549 return ret;
550 }
551 event = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 1,
552 IIO_EV_TYPE_THRESH,
553 (dir ? IIO_EV_DIR_FALLING :
554 IIO_EV_DIR_RISING));
555 iio_push_event(indio_dev, event, data->timestamp);
556
557 /* Reset the interrupt flag */
558 ret = regmap_field_write(data->reg_flag_psint, 0);
559 if (ret < 0)
560 dev_err(&data->client->dev, "failed to reset interrupts\n");
561 mutex_unlock(&data->lock);
562
563 return IRQ_HANDLED;
564 }
565
566 static int stk3310_probe(struct i2c_client *client,
567 const struct i2c_device_id *id)
568 {
569 int ret;
570 struct iio_dev *indio_dev;
571 struct stk3310_data *data;
572
573 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
574 if (!indio_dev) {
575 dev_err(&client->dev, "iio allocation failed!\n");
576 return -ENOMEM;
577 }
578
579 data = iio_priv(indio_dev);
580 data->client = client;
581 i2c_set_clientdata(client, indio_dev);
582 mutex_init(&data->lock);
583
584 ret = stk3310_regmap_init(data);
585 if (ret < 0)
586 return ret;
587
588 indio_dev->dev.parent = &client->dev;
589 indio_dev->info = &stk3310_info;
590 indio_dev->name = STK3310_DRIVER_NAME;
591 indio_dev->modes = INDIO_DIRECT_MODE;
592 indio_dev->channels = stk3310_channels;
593 indio_dev->num_channels = ARRAY_SIZE(stk3310_channels);
594
595 ret = stk3310_init(indio_dev);
596 if (ret < 0)
597 return ret;
598
599 if (client->irq > 0) {
600 ret = devm_request_threaded_irq(&client->dev, client->irq,
601 stk3310_irq_handler,
602 stk3310_irq_event_handler,
603 IRQF_TRIGGER_FALLING |
604 IRQF_ONESHOT,
605 STK3310_EVENT, indio_dev);
606 if (ret < 0) {
607 dev_err(&client->dev, "request irq %d failed\n",
608 client->irq);
609 goto err_standby;
610 }
611 }
612
613 ret = iio_device_register(indio_dev);
614 if (ret < 0) {
615 dev_err(&client->dev, "device_register failed\n");
616 goto err_standby;
617 }
618
619 return 0;
620
621 err_standby:
622 stk3310_set_state(data, STK3310_STATE_STANDBY);
623 return ret;
624 }
625
626 static int stk3310_remove(struct i2c_client *client)
627 {
628 struct iio_dev *indio_dev = i2c_get_clientdata(client);
629
630 iio_device_unregister(indio_dev);
631 return stk3310_set_state(iio_priv(indio_dev), STK3310_STATE_STANDBY);
632 }
633
634 #ifdef CONFIG_PM_SLEEP
635 static int stk3310_suspend(struct device *dev)
636 {
637 struct stk3310_data *data;
638
639 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
640
641 return stk3310_set_state(data, STK3310_STATE_STANDBY);
642 }
643
644 static int stk3310_resume(struct device *dev)
645 {
646 u8 state = 0;
647 struct stk3310_data *data;
648
649 data = iio_priv(i2c_get_clientdata(to_i2c_client(dev)));
650 if (data->ps_enabled)
651 state |= STK3310_STATE_EN_PS;
652 if (data->als_enabled)
653 state |= STK3310_STATE_EN_ALS;
654
655 return stk3310_set_state(data, state);
656 }
657
658 static SIMPLE_DEV_PM_OPS(stk3310_pm_ops, stk3310_suspend, stk3310_resume);
659
660 #define STK3310_PM_OPS (&stk3310_pm_ops)
661 #else
662 #define STK3310_PM_OPS NULL
663 #endif
664
665 static const struct i2c_device_id stk3310_i2c_id[] = {
666 {"STK3310", 0},
667 {"STK3311", 0},
668 {"STK3335", 0},
669 {}
670 };
671 MODULE_DEVICE_TABLE(i2c, stk3310_i2c_id);
672
673 static const struct acpi_device_id stk3310_acpi_id[] = {
674 {"STK3310", 0},
675 {"STK3311", 0},
676 {"STK3335", 0},
677 {}
678 };
679
680 MODULE_DEVICE_TABLE(acpi, stk3310_acpi_id);
681
682 static const struct of_device_id stk3310_of_match[] = {
683 { .compatible = "sensortek,stk3310", },
684 { .compatible = "sensortek,stk3311", },
685 { .compatible = "sensortek,stk3335", },
686 {}
687 };
688 MODULE_DEVICE_TABLE(of, stk3310_of_match);
689
690 static struct i2c_driver stk3310_driver = {
691 .driver = {
692 .name = "stk3310",
693 .of_match_table = stk3310_of_match,
694 .pm = STK3310_PM_OPS,
695 .acpi_match_table = ACPI_PTR(stk3310_acpi_id),
696 },
697 .probe = stk3310_probe,
698 .remove = stk3310_remove,
699 .id_table = stk3310_i2c_id,
700 };
701
702 module_i2c_driver(stk3310_driver);
703
704 MODULE_AUTHOR("Tiberiu Breana <tiberiu.a.breana@intel.com>");
705 MODULE_DESCRIPTION("STK3310 Ambient Light and Proximity Sensor driver");
706 MODULE_LICENSE("GPL v2");
Linux with added FPC-III support