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6
7#include <linux/delay.h>
8#include <linux/err.h>
9#include <linux/i2c.h>
10#include <linux/mutex.h>
11#include <linux/module.h>
12#include <linux/interrupt.h>
13#include <linux/regulator/consumer.h>
14#include <linux/iio/iio.h>
15#include <linux/iio/sysfs.h>
16#include <linux/iio/events.h>
17
18
19#define CM36651_I2C_ADDR_PS 0x19
20
21#define CM36651_ARA 0x0C
22
23
24#define CM36651_CS_CONF1 0x00
25#define CM36651_CS_CONF2 0x01
26#define CM36651_ALS_WH_M 0x02
27#define CM36651_ALS_WH_L 0x03
28#define CM36651_ALS_WL_M 0x04
29#define CM36651_ALS_WL_L 0x05
30#define CM36651_CS_CONF3 0x06
31#define CM36651_CS_CONF_REG_NUM 0x02
32
33
34#define CM36651_PS_CONF1 0x00
35#define CM36651_PS_THD 0x01
36#define CM36651_PS_CANC 0x02
37#define CM36651_PS_CONF2 0x03
38#define CM36651_PS_REG_NUM 0x04
39
40
41#define CM36651_ALS_ENABLE 0x00
42#define CM36651_ALS_DISABLE 0x01
43#define CM36651_ALS_INT_EN 0x02
44#define CM36651_ALS_THRES 0x04
45
46
47#define CM36651_CS_CONF2_DEFAULT_BIT 0x08
48
49
50#define CM36651_CS_IT1 0x00
51#define CM36651_CS_IT2 0x40
52#define CM36651_CS_IT3 0x80
53#define CM36651_CS_IT4 0xC0
54
55
56#define CM36651_PS_ENABLE 0x00
57#define CM36651_PS_DISABLE 0x01
58#define CM36651_PS_INT_EN 0x02
59#define CM36651_PS_PERS2 0x04
60#define CM36651_PS_PERS3 0x08
61#define CM36651_PS_PERS4 0x0C
62
63
64#define CM36651_PS_IT1 0x00
65#define CM36651_PS_IT2 0x10
66#define CM36651_PS_IT3 0x20
67#define CM36651_PS_IT4 0x30
68
69
70#define CM36651_PS_DR1 0x00
71#define CM36651_PS_DR2 0x40
72#define CM36651_PS_DR3 0x80
73#define CM36651_PS_DR4 0xC0
74
75
76#define CM36651_PS_INITIAL_THD 0x05
77
78
79#define CM36651_PS_CANC_DEFAULT 0x00
80
81
82#define CM36651_PS_HYS1 0x00
83#define CM36651_PS_HYS2 0x01
84#define CM36651_PS_SMART_PERS_EN 0x02
85#define CM36651_PS_DIR_INT 0x04
86#define CM36651_PS_MS 0x10
87
88#define CM36651_CS_COLOR_NUM 4
89
90#define CM36651_CLOSE_PROXIMITY 0x32
91#define CM36651_FAR_PROXIMITY 0x33
92
93#define CM36651_CS_INT_TIME_AVAIL "0.08 0.16 0.32 0.64"
94#define CM36651_PS_INT_TIME_AVAIL "0.000320 0.000420 0.000520 0.000640"
95
96enum cm36651_operation_mode {
97 CM36651_LIGHT_EN,
98 CM36651_PROXIMITY_EN,
99 CM36651_PROXIMITY_EV_EN,
100};
101
102enum cm36651_light_channel_idx {
103 CM36651_LIGHT_CHANNEL_IDX_RED,
104 CM36651_LIGHT_CHANNEL_IDX_GREEN,
105 CM36651_LIGHT_CHANNEL_IDX_BLUE,
106 CM36651_LIGHT_CHANNEL_IDX_CLEAR,
107};
108
109enum cm36651_command {
110 CM36651_CMD_READ_RAW_LIGHT,
111 CM36651_CMD_READ_RAW_PROXIMITY,
112 CM36651_CMD_PROX_EV_EN,
113 CM36651_CMD_PROX_EV_DIS,
114};
115
116static const u8 cm36651_cs_reg[CM36651_CS_CONF_REG_NUM] = {
117 CM36651_CS_CONF1,
118 CM36651_CS_CONF2,
119};
120
121static const u8 cm36651_ps_reg[CM36651_PS_REG_NUM] = {
122 CM36651_PS_CONF1,
123 CM36651_PS_THD,
124 CM36651_PS_CANC,
125 CM36651_PS_CONF2,
126};
127
128struct cm36651_data {
129 const struct cm36651_platform_data *pdata;
130 struct i2c_client *client;
131 struct i2c_client *ps_client;
132 struct i2c_client *ara_client;
133 struct mutex lock;
134 struct regulator *vled_reg;
135 unsigned long flags;
136 int cs_int_time[CM36651_CS_COLOR_NUM];
137 int ps_int_time;
138 u8 cs_ctrl_regs[CM36651_CS_CONF_REG_NUM];
139 u8 ps_ctrl_regs[CM36651_PS_REG_NUM];
140 u16 color[CM36651_CS_COLOR_NUM];
141};
142
143static int cm36651_setup_reg(struct cm36651_data *cm36651)
144{
145 struct i2c_client *client = cm36651->client;
146 struct i2c_client *ps_client = cm36651->ps_client;
147 int i, ret;
148
149
150 cm36651->cs_ctrl_regs[CM36651_CS_CONF1] = CM36651_ALS_ENABLE |
151 CM36651_ALS_THRES;
152 cm36651->cs_ctrl_regs[CM36651_CS_CONF2] = CM36651_CS_CONF2_DEFAULT_BIT;
153
154 for (i = 0; i < CM36651_CS_CONF_REG_NUM; i++) {
155 ret = i2c_smbus_write_byte_data(client, cm36651_cs_reg[i],
156 cm36651->cs_ctrl_regs[i]);
157 if (ret < 0)
158 return ret;
159 }
160
161
162 cm36651->ps_ctrl_regs[CM36651_PS_CONF1] = CM36651_PS_ENABLE |
163 CM36651_PS_IT2;
164 cm36651->ps_ctrl_regs[CM36651_PS_THD] = CM36651_PS_INITIAL_THD;
165 cm36651->ps_ctrl_regs[CM36651_PS_CANC] = CM36651_PS_CANC_DEFAULT;
166 cm36651->ps_ctrl_regs[CM36651_PS_CONF2] = CM36651_PS_HYS2 |
167 CM36651_PS_DIR_INT | CM36651_PS_SMART_PERS_EN;
168
169 for (i = 0; i < CM36651_PS_REG_NUM; i++) {
170 ret = i2c_smbus_write_byte_data(ps_client, cm36651_ps_reg[i],
171 cm36651->ps_ctrl_regs[i]);
172 if (ret < 0)
173 return ret;
174 }
175
176
177 ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF1,
178 CM36651_ALS_DISABLE);
179 if (ret < 0)
180 return ret;
181
182 ret = i2c_smbus_write_byte_data(cm36651->ps_client,
183 CM36651_PS_CONF1, CM36651_PS_DISABLE);
184 if (ret < 0)
185 return ret;
186
187 return 0;
188}
189
190static int cm36651_read_output(struct cm36651_data *cm36651,
191 struct iio_chan_spec const *chan, int *val)
192{
193 struct i2c_client *client = cm36651->client;
194 int ret = -EINVAL;
195
196 switch (chan->type) {
197 case IIO_LIGHT:
198 *val = i2c_smbus_read_word_data(client, chan->address);
199 if (*val < 0)
200 return ret;
201
202 ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF1,
203 CM36651_ALS_DISABLE);
204 if (ret < 0)
205 return ret;
206
207 ret = IIO_VAL_INT;
208 break;
209 case IIO_PROXIMITY:
210 *val = i2c_smbus_read_byte(cm36651->ps_client);
211 if (*val < 0)
212 return ret;
213
214 if (!test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags)) {
215 ret = i2c_smbus_write_byte_data(cm36651->ps_client,
216 CM36651_PS_CONF1, CM36651_PS_DISABLE);
217 if (ret < 0)
218 return ret;
219 }
220
221 ret = IIO_VAL_INT;
222 break;
223 default:
224 break;
225 }
226
227 return ret;
228}
229
230static irqreturn_t cm36651_irq_handler(int irq, void *data)
231{
232 struct iio_dev *indio_dev = data;
233 struct cm36651_data *cm36651 = iio_priv(indio_dev);
234 struct i2c_client *client = cm36651->client;
235 int ev_dir, ret;
236 u64 ev_code;
237
238
239
240
241
242
243
244
245 ret = i2c_smbus_read_byte(cm36651->ara_client);
246 if (ret < 0) {
247 dev_err(&client->dev,
248 "%s: Data read failed: %d\n", __func__, ret);
249 return IRQ_HANDLED;
250 }
251 switch (ret) {
252 case CM36651_CLOSE_PROXIMITY:
253 ev_dir = IIO_EV_DIR_RISING;
254 break;
255 case CM36651_FAR_PROXIMITY:
256 ev_dir = IIO_EV_DIR_FALLING;
257 break;
258 default:
259 dev_err(&client->dev,
260 "%s: Data read wrong: %d\n", __func__, ret);
261 return IRQ_HANDLED;
262 }
263
264 ev_code = IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
265 CM36651_CMD_READ_RAW_PROXIMITY,
266 IIO_EV_TYPE_THRESH, ev_dir);
267
268 iio_push_event(indio_dev, ev_code, iio_get_time_ns(indio_dev));
269
270 return IRQ_HANDLED;
271}
272
273static int cm36651_set_operation_mode(struct cm36651_data *cm36651, int cmd)
274{
275 struct i2c_client *client = cm36651->client;
276 struct i2c_client *ps_client = cm36651->ps_client;
277 int ret = -EINVAL;
278
279 switch (cmd) {
280 case CM36651_CMD_READ_RAW_LIGHT:
281 ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF1,
282 cm36651->cs_ctrl_regs[CM36651_CS_CONF1]);
283 break;
284 case CM36651_CMD_READ_RAW_PROXIMITY:
285 if (test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags))
286 return CM36651_PROXIMITY_EV_EN;
287
288 ret = i2c_smbus_write_byte_data(ps_client, CM36651_PS_CONF1,
289 cm36651->ps_ctrl_regs[CM36651_PS_CONF1]);
290 break;
291 case CM36651_CMD_PROX_EV_EN:
292 if (test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags)) {
293 dev_err(&client->dev,
294 "Already proximity event enable state\n");
295 return ret;
296 }
297 set_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags);
298
299 ret = i2c_smbus_write_byte_data(ps_client,
300 cm36651_ps_reg[CM36651_PS_CONF1],
301 CM36651_PS_INT_EN | CM36651_PS_PERS2 | CM36651_PS_IT2);
302
303 if (ret < 0) {
304 dev_err(&client->dev, "Proximity enable event failed\n");
305 return ret;
306 }
307 break;
308 case CM36651_CMD_PROX_EV_DIS:
309 if (!test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags)) {
310 dev_err(&client->dev,
311 "Already proximity event disable state\n");
312 return ret;
313 }
314 clear_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags);
315 ret = i2c_smbus_write_byte_data(ps_client,
316 CM36651_PS_CONF1, CM36651_PS_DISABLE);
317 break;
318 }
319
320 if (ret < 0)
321 dev_err(&client->dev, "Write register failed\n");
322
323 return ret;
324}
325
326static int cm36651_read_channel(struct cm36651_data *cm36651,
327 struct iio_chan_spec const *chan, int *val)
328{
329 struct i2c_client *client = cm36651->client;
330 int cmd, ret;
331
332 if (chan->type == IIO_LIGHT)
333 cmd = CM36651_CMD_READ_RAW_LIGHT;
334 else if (chan->type == IIO_PROXIMITY)
335 cmd = CM36651_CMD_READ_RAW_PROXIMITY;
336 else
337 return -EINVAL;
338
339 ret = cm36651_set_operation_mode(cm36651, cmd);
340 if (ret < 0) {
341 dev_err(&client->dev, "CM36651 set operation mode failed\n");
342 return ret;
343 }
344
345 msleep(50);
346 ret = cm36651_read_output(cm36651, chan, val);
347 if (ret < 0) {
348 dev_err(&client->dev, "CM36651 read output failed\n");
349 return ret;
350 }
351
352 return ret;
353}
354
355static int cm36651_read_int_time(struct cm36651_data *cm36651,
356 struct iio_chan_spec const *chan, int *val2)
357{
358 switch (chan->type) {
359 case IIO_LIGHT:
360 if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT1)
361 *val2 = 80000;
362 else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT2)
363 *val2 = 160000;
364 else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT3)
365 *val2 = 320000;
366 else if (cm36651->cs_int_time[chan->address] == CM36651_CS_IT4)
367 *val2 = 640000;
368 else
369 return -EINVAL;
370 break;
371 case IIO_PROXIMITY:
372 if (cm36651->ps_int_time == CM36651_PS_IT1)
373 *val2 = 320;
374 else if (cm36651->ps_int_time == CM36651_PS_IT2)
375 *val2 = 420;
376 else if (cm36651->ps_int_time == CM36651_PS_IT3)
377 *val2 = 520;
378 else if (cm36651->ps_int_time == CM36651_PS_IT4)
379 *val2 = 640;
380 else
381 return -EINVAL;
382 break;
383 default:
384 return -EINVAL;
385 }
386
387 return IIO_VAL_INT_PLUS_MICRO;
388}
389
390static int cm36651_write_int_time(struct cm36651_data *cm36651,
391 struct iio_chan_spec const *chan, int val)
392{
393 struct i2c_client *client = cm36651->client;
394 struct i2c_client *ps_client = cm36651->ps_client;
395 int int_time, ret;
396
397 switch (chan->type) {
398 case IIO_LIGHT:
399 if (val == 80000)
400 int_time = CM36651_CS_IT1;
401 else if (val == 160000)
402 int_time = CM36651_CS_IT2;
403 else if (val == 320000)
404 int_time = CM36651_CS_IT3;
405 else if (val == 640000)
406 int_time = CM36651_CS_IT4;
407 else
408 return -EINVAL;
409
410 ret = i2c_smbus_write_byte_data(client, CM36651_CS_CONF3,
411 int_time >> 2 * (chan->address));
412 if (ret < 0) {
413 dev_err(&client->dev, "CS integration time write failed\n");
414 return ret;
415 }
416 cm36651->cs_int_time[chan->address] = int_time;
417 break;
418 case IIO_PROXIMITY:
419 if (val == 320)
420 int_time = CM36651_PS_IT1;
421 else if (val == 420)
422 int_time = CM36651_PS_IT2;
423 else if (val == 520)
424 int_time = CM36651_PS_IT3;
425 else if (val == 640)
426 int_time = CM36651_PS_IT4;
427 else
428 return -EINVAL;
429
430 ret = i2c_smbus_write_byte_data(ps_client,
431 CM36651_PS_CONF1, int_time);
432 if (ret < 0) {
433 dev_err(&client->dev, "PS integration time write failed\n");
434 return ret;
435 }
436 cm36651->ps_int_time = int_time;
437 break;
438 default:
439 return -EINVAL;
440 }
441
442 return ret;
443}
444
445static int cm36651_read_raw(struct iio_dev *indio_dev,
446 struct iio_chan_spec const *chan,
447 int *val, int *val2, long mask)
448{
449 struct cm36651_data *cm36651 = iio_priv(indio_dev);
450 int ret;
451
452 mutex_lock(&cm36651->lock);
453
454 switch (mask) {
455 case IIO_CHAN_INFO_RAW:
456 ret = cm36651_read_channel(cm36651, chan, val);
457 break;
458 case IIO_CHAN_INFO_INT_TIME:
459 *val = 0;
460 ret = cm36651_read_int_time(cm36651, chan, val2);
461 break;
462 default:
463 ret = -EINVAL;
464 }
465
466 mutex_unlock(&cm36651->lock);
467
468 return ret;
469}
470
471static int cm36651_write_raw(struct iio_dev *indio_dev,
472 struct iio_chan_spec const *chan,
473 int val, int val2, long mask)
474{
475 struct cm36651_data *cm36651 = iio_priv(indio_dev);
476 struct i2c_client *client = cm36651->client;
477 int ret = -EINVAL;
478
479 if (mask == IIO_CHAN_INFO_INT_TIME) {
480 ret = cm36651_write_int_time(cm36651, chan, val2);
481 if (ret < 0)
482 dev_err(&client->dev, "Integration time write failed\n");
483 }
484
485 return ret;
486}
487
488static int cm36651_read_prox_thresh(struct iio_dev *indio_dev,
489 const struct iio_chan_spec *chan,
490 enum iio_event_type type,
491 enum iio_event_direction dir,
492 enum iio_event_info info,
493 int *val, int *val2)
494{
495 struct cm36651_data *cm36651 = iio_priv(indio_dev);
496
497 *val = cm36651->ps_ctrl_regs[CM36651_PS_THD];
498
499 return 0;
500}
501
502static int cm36651_write_prox_thresh(struct iio_dev *indio_dev,
503 const struct iio_chan_spec *chan,
504 enum iio_event_type type,
505 enum iio_event_direction dir,
506 enum iio_event_info info,
507 int val, int val2)
508{
509 struct cm36651_data *cm36651 = iio_priv(indio_dev);
510 struct i2c_client *client = cm36651->client;
511 int ret;
512
513 if (val < 3 || val > 255)
514 return -EINVAL;
515
516 cm36651->ps_ctrl_regs[CM36651_PS_THD] = val;
517 ret = i2c_smbus_write_byte_data(cm36651->ps_client, CM36651_PS_THD,
518 cm36651->ps_ctrl_regs[CM36651_PS_THD]);
519
520 if (ret < 0) {
521 dev_err(&client->dev, "PS threshold write failed: %d\n", ret);
522 return ret;
523 }
524
525 return 0;
526}
527
528static int cm36651_write_prox_event_config(struct iio_dev *indio_dev,
529 const struct iio_chan_spec *chan,
530 enum iio_event_type type,
531 enum iio_event_direction dir,
532 int state)
533{
534 struct cm36651_data *cm36651 = iio_priv(indio_dev);
535 int cmd, ret = -EINVAL;
536
537 mutex_lock(&cm36651->lock);
538
539 cmd = state ? CM36651_CMD_PROX_EV_EN : CM36651_CMD_PROX_EV_DIS;
540 ret = cm36651_set_operation_mode(cm36651, cmd);
541
542 mutex_unlock(&cm36651->lock);
543
544 return ret;
545}
546
547static int cm36651_read_prox_event_config(struct iio_dev *indio_dev,
548 const struct iio_chan_spec *chan,
549 enum iio_event_type type,
550 enum iio_event_direction dir)
551{
552 struct cm36651_data *cm36651 = iio_priv(indio_dev);
553 int event_en;
554
555 mutex_lock(&cm36651->lock);
556
557 event_en = test_bit(CM36651_PROXIMITY_EV_EN, &cm36651->flags);
558
559 mutex_unlock(&cm36651->lock);
560
561 return event_en;
562}
563
564#define CM36651_LIGHT_CHANNEL(_color, _idx) { \
565 .type = IIO_LIGHT, \
566 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \
567 BIT(IIO_CHAN_INFO_INT_TIME), \
568 .address = _idx, \
569 .modified = 1, \
570 .channel2 = IIO_MOD_LIGHT_##_color, \
571} \
572
573static const struct iio_event_spec cm36651_event_spec[] = {
574 {
575 .type = IIO_EV_TYPE_THRESH,
576 .dir = IIO_EV_DIR_EITHER,
577 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
578 BIT(IIO_EV_INFO_ENABLE),
579 }
580};
581
582static const struct iio_chan_spec cm36651_channels[] = {
583 {
584 .type = IIO_PROXIMITY,
585 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
586 BIT(IIO_CHAN_INFO_INT_TIME),
587 .event_spec = cm36651_event_spec,
588 .num_event_specs = ARRAY_SIZE(cm36651_event_spec),
589 },
590 CM36651_LIGHT_CHANNEL(RED, CM36651_LIGHT_CHANNEL_IDX_RED),
591 CM36651_LIGHT_CHANNEL(GREEN, CM36651_LIGHT_CHANNEL_IDX_GREEN),
592 CM36651_LIGHT_CHANNEL(BLUE, CM36651_LIGHT_CHANNEL_IDX_BLUE),
593 CM36651_LIGHT_CHANNEL(CLEAR, CM36651_LIGHT_CHANNEL_IDX_CLEAR),
594};
595
596static IIO_CONST_ATTR(in_illuminance_integration_time_available,
597 CM36651_CS_INT_TIME_AVAIL);
598static IIO_CONST_ATTR(in_proximity_integration_time_available,
599 CM36651_PS_INT_TIME_AVAIL);
600
601static struct attribute *cm36651_attributes[] = {
602 &iio_const_attr_in_illuminance_integration_time_available.dev_attr.attr,
603 &iio_const_attr_in_proximity_integration_time_available.dev_attr.attr,
604 NULL,
605};
606
607static const struct attribute_group cm36651_attribute_group = {
608 .attrs = cm36651_attributes
609};
610
611static const struct iio_info cm36651_info = {
612 .read_raw = &cm36651_read_raw,
613 .write_raw = &cm36651_write_raw,
614 .read_event_value = &cm36651_read_prox_thresh,
615 .write_event_value = &cm36651_write_prox_thresh,
616 .read_event_config = &cm36651_read_prox_event_config,
617 .write_event_config = &cm36651_write_prox_event_config,
618 .attrs = &cm36651_attribute_group,
619};
620
621static int cm36651_probe(struct i2c_client *client,
622 const struct i2c_device_id *id)
623{
624 struct cm36651_data *cm36651;
625 struct iio_dev *indio_dev;
626 int ret;
627
628 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*cm36651));
629 if (!indio_dev)
630 return -ENOMEM;
631
632 cm36651 = iio_priv(indio_dev);
633
634 cm36651->vled_reg = devm_regulator_get(&client->dev, "vled");
635 if (IS_ERR(cm36651->vled_reg)) {
636 dev_err(&client->dev, "get regulator vled failed\n");
637 return PTR_ERR(cm36651->vled_reg);
638 }
639
640 ret = regulator_enable(cm36651->vled_reg);
641 if (ret) {
642 dev_err(&client->dev, "enable regulator vled failed\n");
643 return ret;
644 }
645
646 i2c_set_clientdata(client, indio_dev);
647
648 cm36651->client = client;
649 cm36651->ps_client = i2c_new_dummy(client->adapter,
650 CM36651_I2C_ADDR_PS);
651 if (!cm36651->ps_client) {
652 dev_err(&client->dev, "%s: new i2c device failed\n", __func__);
653 ret = -ENODEV;
654 goto error_disable_reg;
655 }
656
657 cm36651->ara_client = i2c_new_dummy(client->adapter, CM36651_ARA);
658 if (!cm36651->ara_client) {
659 dev_err(&client->dev, "%s: new i2c device failed\n", __func__);
660 ret = -ENODEV;
661 goto error_i2c_unregister_ps;
662 }
663
664 mutex_init(&cm36651->lock);
665 indio_dev->dev.parent = &client->dev;
666 indio_dev->channels = cm36651_channels;
667 indio_dev->num_channels = ARRAY_SIZE(cm36651_channels);
668 indio_dev->info = &cm36651_info;
669 indio_dev->name = id->name;
670 indio_dev->modes = INDIO_DIRECT_MODE;
671
672 ret = cm36651_setup_reg(cm36651);
673 if (ret) {
674 dev_err(&client->dev, "%s: register setup failed\n", __func__);
675 goto error_i2c_unregister_ara;
676 }
677
678 ret = request_threaded_irq(client->irq, NULL, cm36651_irq_handler,
679 IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
680 "cm36651", indio_dev);
681 if (ret) {
682 dev_err(&client->dev, "%s: request irq failed\n", __func__);
683 goto error_i2c_unregister_ara;
684 }
685
686 ret = iio_device_register(indio_dev);
687 if (ret) {
688 dev_err(&client->dev, "%s: regist device failed\n", __func__);
689 goto error_free_irq;
690 }
691
692 return 0;
693
694error_free_irq:
695 free_irq(client->irq, indio_dev);
696error_i2c_unregister_ara:
697 i2c_unregister_device(cm36651->ara_client);
698error_i2c_unregister_ps:
699 i2c_unregister_device(cm36651->ps_client);
700error_disable_reg:
701 regulator_disable(cm36651->vled_reg);
702 return ret;
703}
704
705static int cm36651_remove(struct i2c_client *client)
706{
707 struct iio_dev *indio_dev = i2c_get_clientdata(client);
708 struct cm36651_data *cm36651 = iio_priv(indio_dev);
709
710 iio_device_unregister(indio_dev);
711 regulator_disable(cm36651->vled_reg);
712 free_irq(client->irq, indio_dev);
713 i2c_unregister_device(cm36651->ps_client);
714 i2c_unregister_device(cm36651->ara_client);
715
716 return 0;
717}
718
719static const struct i2c_device_id cm36651_id[] = {
720 { "cm36651", 0 },
721 { }
722};
723
724MODULE_DEVICE_TABLE(i2c, cm36651_id);
725
726static const struct of_device_id cm36651_of_match[] = {
727 { .compatible = "capella,cm36651" },
728 { }
729};
730MODULE_DEVICE_TABLE(of, cm36651_of_match);
731
732static struct i2c_driver cm36651_driver = {
733 .driver = {
734 .name = "cm36651",
735 .of_match_table = cm36651_of_match,
736 },
737 .probe = cm36651_probe,
738 .remove = cm36651_remove,
739 .id_table = cm36651_id,
740};
741
742module_i2c_driver(cm36651_driver);
743
744MODULE_AUTHOR("Beomho Seo <beomho.seo@samsung.com>");
745MODULE_DESCRIPTION("CM36651 proximity/ambient light sensor driver");
746MODULE_LICENSE("GPL v2");
747
