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1// SPDX-License-Identifier: GPL-2.0
2/*
3 * VCNL4035 Ambient Light and Proximity Sensor - 7-bit I2C slave address 0x60
4 *
5 * Copyright (c) 2018, DENX Software Engineering GmbH
6 * Author: Parthiban Nallathambi <pn@denx.de>
7 *
8 * TODO: Proximity
9 */
10#include <linux/bitops.h>
11#include <linux/bitfield.h>
12#include <linux/i2c.h>
13#include <linux/module.h>
14#include <linux/pm_runtime.h>
15#include <linux/regmap.h>
16
17#include <linux/iio/buffer.h>
18#include <linux/iio/events.h>
19#include <linux/iio/iio.h>
20#include <linux/iio/sysfs.h>
21#include <linux/iio/trigger.h>
22#include <linux/iio/trigger_consumer.h>
23#include <linux/iio/triggered_buffer.h>
24
25#define VCNL4035_DRV_NAME "vcnl4035"
26#define VCNL4035_IRQ_NAME "vcnl4035_event"
27#define VCNL4035_REGMAP_NAME "vcnl4035_regmap"
28
29/* Device registers */
30#define VCNL4035_ALS_CONF 0x00
31#define VCNL4035_ALS_THDH 0x01
32#define VCNL4035_ALS_THDL 0x02
33#define VCNL4035_ALS_DATA 0x0B
34#define VCNL4035_WHITE_DATA 0x0C
35#define VCNL4035_INT_FLAG 0x0D
36#define VCNL4035_DEV_ID 0x0E
37
38/* Register masks */
39#define VCNL4035_MODE_ALS_MASK BIT(0)
40#define VCNL4035_MODE_ALS_WHITE_CHAN BIT(8)
41#define VCNL4035_MODE_ALS_INT_MASK BIT(1)
42#define VCNL4035_ALS_IT_MASK GENMASK(7, 5)
43#define VCNL4035_ALS_PERS_MASK GENMASK(3, 2)
44#define VCNL4035_INT_ALS_IF_H_MASK BIT(12)
45#define VCNL4035_INT_ALS_IF_L_MASK BIT(13)
46#define VCNL4035_DEV_ID_MASK GENMASK(7, 0)
47
48/* Default values */
49#define VCNL4035_MODE_ALS_ENABLE BIT(0)
50#define VCNL4035_MODE_ALS_DISABLE 0x00
51#define VCNL4035_MODE_ALS_INT_ENABLE BIT(1)
52#define VCNL4035_MODE_ALS_INT_DISABLE 0
53#define VCNL4035_DEV_ID_VAL 0x80
54#define VCNL4035_ALS_IT_DEFAULT 0x01
55#define VCNL4035_ALS_PERS_DEFAULT 0x00
56#define VCNL4035_ALS_THDH_DEFAULT 5000
57#define VCNL4035_ALS_THDL_DEFAULT 100
58#define VCNL4035_SLEEP_DELAY_MS 2000
59
60struct vcnl4035_data {
61 struct i2c_client *client;
62 struct regmap *regmap;
63 unsigned int als_it_val;
64 unsigned int als_persistence;
65 unsigned int als_thresh_low;
66 unsigned int als_thresh_high;
67 struct iio_trigger *drdy_trigger0;
68};
69
70static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data)
71{
72 int ret;
73 int reg;
74
75 ret = regmap_read(data->regmap, VCNL4035_INT_FLAG, ®);
76 if (ret < 0)
77 return false;
78
79 return !!(reg &
80 (VCNL4035_INT_ALS_IF_H_MASK | VCNL4035_INT_ALS_IF_L_MASK));
81}
82
83static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private)
84{
85 struct iio_dev *indio_dev = private;
86 struct vcnl4035_data *data = iio_priv(indio_dev);
87
88 if (vcnl4035_is_triggered(data)) {
89 iio_push_event(indio_dev, IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
90 0,
91 IIO_EV_TYPE_THRESH,
92 IIO_EV_DIR_EITHER),
93 iio_get_time_ns(indio_dev));
94 iio_trigger_poll_nested(data->drdy_trigger0);
95 return IRQ_HANDLED;
96 }
97
98 return IRQ_NONE;
99}
100
101/* Triggered buffer */
102static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p)
103{
104 struct iio_poll_func *pf = p;
105 struct iio_dev *indio_dev = pf->indio_dev;
106 struct vcnl4035_data *data = iio_priv(indio_dev);
107 /* Ensure naturally aligned timestamp */
108 u8 buffer[ALIGN(sizeof(u16), sizeof(s64)) + sizeof(s64)] __aligned(8);
109 int ret;
110
111 ret = regmap_read(data->regmap, VCNL4035_ALS_DATA, (int *)buffer);
112 if (ret < 0) {
113 dev_err(&data->client->dev,
114 "Trigger consumer can't read from sensor.\n");
115 goto fail_read;
116 }
117 iio_push_to_buffers_with_timestamp(indio_dev, buffer,
118 iio_get_time_ns(indio_dev));
119
120fail_read:
121 iio_trigger_notify_done(indio_dev->trig);
122
123 return IRQ_HANDLED;
124}
125
126static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger,
127 bool enable_drdy)
128{
129 struct iio_dev *indio_dev = iio_trigger_get_drvdata(trigger);
130 struct vcnl4035_data *data = iio_priv(indio_dev);
131 int val = enable_drdy ? VCNL4035_MODE_ALS_INT_ENABLE :
132 VCNL4035_MODE_ALS_INT_DISABLE;
133
134 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
135 VCNL4035_MODE_ALS_INT_MASK,
136 val);
137}
138
139static const struct iio_trigger_ops vcnl4035_trigger_ops = {
140 .validate_device = iio_trigger_validate_own_device,
141 .set_trigger_state = vcnl4035_als_drdy_set_state,
142};
143
144static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on)
145{
146 int ret;
147 struct device *dev = &data->client->dev;
148
149 if (on) {
150 ret = pm_runtime_resume_and_get(dev);
151 } else {
152 pm_runtime_mark_last_busy(dev);
153 ret = pm_runtime_put_autosuspend(dev);
154 }
155
156 return ret;
157}
158
159/*
160 * Device IT INT Time (ms) Scale (lux/step)
161 * 000 50 0.064
162 * 001 100 0.032
163 * 010 200 0.016
164 * 100 400 0.008
165 * 101 - 111 800 0.004
166 * Values are proportional, so ALS INT is selected for input due to
167 * simplicity reason. Integration time value and scaling is
168 * calculated based on device INT value
169 *
170 * Raw value needs to be scaled using ALS steps
171 */
172static int vcnl4035_read_raw(struct iio_dev *indio_dev,
173 struct iio_chan_spec const *chan, int *val,
174 int *val2, long mask)
175{
176 struct vcnl4035_data *data = iio_priv(indio_dev);
177 int ret;
178 int raw_data;
179 unsigned int reg;
180
181 switch (mask) {
182 case IIO_CHAN_INFO_RAW:
183 ret = vcnl4035_set_pm_runtime_state(data, true);
184 if (ret < 0)
185 return ret;
186
187 ret = iio_device_claim_direct_mode(indio_dev);
188 if (!ret) {
189 if (chan->channel)
190 reg = VCNL4035_ALS_DATA;
191 else
192 reg = VCNL4035_WHITE_DATA;
193 ret = regmap_read(data->regmap, reg, &raw_data);
194 iio_device_release_direct_mode(indio_dev);
195 if (!ret) {
196 *val = raw_data;
197 ret = IIO_VAL_INT;
198 }
199 }
200 vcnl4035_set_pm_runtime_state(data, false);
201 return ret;
202 case IIO_CHAN_INFO_INT_TIME:
203 *val = 50;
204 if (data->als_it_val)
205 *val = data->als_it_val * 100;
206 return IIO_VAL_INT;
207 case IIO_CHAN_INFO_SCALE:
208 *val = 64;
209 if (!data->als_it_val)
210 *val2 = 1000;
211 else
212 *val2 = data->als_it_val * 2 * 1000;
213 return IIO_VAL_FRACTIONAL;
214 default:
215 return -EINVAL;
216 }
217}
218
219static int vcnl4035_write_raw(struct iio_dev *indio_dev,
220 struct iio_chan_spec const *chan,
221 int val, int val2, long mask)
222{
223 int ret;
224 struct vcnl4035_data *data = iio_priv(indio_dev);
225
226 switch (mask) {
227 case IIO_CHAN_INFO_INT_TIME:
228 if (val <= 0 || val > 800)
229 return -EINVAL;
230
231 ret = vcnl4035_set_pm_runtime_state(data, true);
232 if (ret < 0)
233 return ret;
234
235 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
236 VCNL4035_ALS_IT_MASK,
237 val / 100);
238 if (!ret)
239 data->als_it_val = val / 100;
240
241 vcnl4035_set_pm_runtime_state(data, false);
242 return ret;
243 default:
244 return -EINVAL;
245 }
246}
247
248/* No direct ABI for persistence and threshold, so eventing */
249static int vcnl4035_read_thresh(struct iio_dev *indio_dev,
250 const struct iio_chan_spec *chan, enum iio_event_type type,
251 enum iio_event_direction dir, enum iio_event_info info,
252 int *val, int *val2)
253{
254 struct vcnl4035_data *data = iio_priv(indio_dev);
255
256 switch (info) {
257 case IIO_EV_INFO_VALUE:
258 switch (dir) {
259 case IIO_EV_DIR_RISING:
260 *val = data->als_thresh_high;
261 return IIO_VAL_INT;
262 case IIO_EV_DIR_FALLING:
263 *val = data->als_thresh_low;
264 return IIO_VAL_INT;
265 default:
266 return -EINVAL;
267 }
268 break;
269 case IIO_EV_INFO_PERIOD:
270 *val = data->als_persistence;
271 return IIO_VAL_INT;
272 default:
273 return -EINVAL;
274 }
275
276}
277
278static int vcnl4035_write_thresh(struct iio_dev *indio_dev,
279 const struct iio_chan_spec *chan, enum iio_event_type type,
280 enum iio_event_direction dir, enum iio_event_info info, int val,
281 int val2)
282{
283 struct vcnl4035_data *data = iio_priv(indio_dev);
284 int ret;
285
286 switch (info) {
287 case IIO_EV_INFO_VALUE:
288 /* 16 bit threshold range 0 - 65535 */
289 if (val < 0 || val > 65535)
290 return -EINVAL;
291 if (dir == IIO_EV_DIR_RISING) {
292 if (val < data->als_thresh_low)
293 return -EINVAL;
294 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH,
295 val);
296 if (ret)
297 return ret;
298 data->als_thresh_high = val;
299 } else {
300 if (val > data->als_thresh_high)
301 return -EINVAL;
302 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL,
303 val);
304 if (ret)
305 return ret;
306 data->als_thresh_low = val;
307 }
308 return ret;
309 case IIO_EV_INFO_PERIOD:
310 /* allow only 1 2 4 8 as persistence value */
311 if (val < 0 || val > 8 || hweight8(val) != 1)
312 return -EINVAL;
313 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
314 VCNL4035_ALS_PERS_MASK, val);
315 if (!ret)
316 data->als_persistence = val;
317 return ret;
318 default:
319 return -EINVAL;
320 }
321}
322
323static IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800");
324
325static struct attribute *vcnl4035_attributes[] = {
326 &iio_const_attr_integration_time_available.dev_attr.attr,
327 NULL,
328};
329
330static const struct attribute_group vcnl4035_attribute_group = {
331 .attrs = vcnl4035_attributes,
332};
333
334static const struct iio_info vcnl4035_info = {
335 .read_raw = vcnl4035_read_raw,
336 .write_raw = vcnl4035_write_raw,
337 .read_event_value = vcnl4035_read_thresh,
338 .write_event_value = vcnl4035_write_thresh,
339 .attrs = &vcnl4035_attribute_group,
340};
341
342static const struct iio_event_spec vcnl4035_event_spec[] = {
343 {
344 .type = IIO_EV_TYPE_THRESH,
345 .dir = IIO_EV_DIR_RISING,
346 .mask_separate = BIT(IIO_EV_INFO_VALUE),
347 }, {
348 .type = IIO_EV_TYPE_THRESH,
349 .dir = IIO_EV_DIR_FALLING,
350 .mask_separate = BIT(IIO_EV_INFO_VALUE),
351 }, {
352 .type = IIO_EV_TYPE_THRESH,
353 .dir = IIO_EV_DIR_EITHER,
354 .mask_separate = BIT(IIO_EV_INFO_PERIOD),
355 },
356};
357
358enum vcnl4035_scan_index_order {
359 VCNL4035_CHAN_INDEX_LIGHT,
360 VCNL4035_CHAN_INDEX_WHITE_LED,
361};
362
363static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = {
364 .validate_scan_mask = &iio_validate_scan_mask_onehot,
365};
366
367static const struct iio_chan_spec vcnl4035_channels[] = {
368 {
369 .type = IIO_LIGHT,
370 .channel = 0,
371 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
372 BIT(IIO_CHAN_INFO_INT_TIME) |
373 BIT(IIO_CHAN_INFO_SCALE),
374 .event_spec = vcnl4035_event_spec,
375 .num_event_specs = ARRAY_SIZE(vcnl4035_event_spec),
376 .scan_index = VCNL4035_CHAN_INDEX_LIGHT,
377 .scan_type = {
378 .sign = 'u',
379 .realbits = 16,
380 .storagebits = 16,
381 .endianness = IIO_LE,
382 },
383 },
384 {
385 .type = IIO_INTENSITY,
386 .channel = 1,
387 .modified = 1,
388 .channel2 = IIO_MOD_LIGHT_BOTH,
389 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
390 .scan_index = VCNL4035_CHAN_INDEX_WHITE_LED,
391 .scan_type = {
392 .sign = 'u',
393 .realbits = 16,
394 .storagebits = 16,
395 .endianness = IIO_LE,
396 },
397 },
398};
399
400static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status)
401{
402 return regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
403 VCNL4035_MODE_ALS_MASK,
404 status);
405}
406
407static int vcnl4035_init(struct vcnl4035_data *data)
408{
409 int ret;
410 int id;
411
412 ret = regmap_read(data->regmap, VCNL4035_DEV_ID, &id);
413 if (ret < 0) {
414 dev_err(&data->client->dev, "Failed to read DEV_ID register\n");
415 return ret;
416 }
417
418 id = FIELD_GET(VCNL4035_DEV_ID_MASK, id);
419 if (id != VCNL4035_DEV_ID_VAL) {
420 dev_err(&data->client->dev, "Wrong id, got %x, expected %x\n",
421 id, VCNL4035_DEV_ID_VAL);
422 return -ENODEV;
423 }
424
425 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE);
426 if (ret < 0)
427 return ret;
428
429 /* ALS white channel enable */
430 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
431 VCNL4035_MODE_ALS_WHITE_CHAN,
432 1);
433 if (ret) {
434 dev_err(&data->client->dev, "set white channel enable %d\n",
435 ret);
436 return ret;
437 }
438
439 /* set default integration time - 100 ms for ALS */
440 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
441 VCNL4035_ALS_IT_MASK,
442 VCNL4035_ALS_IT_DEFAULT);
443 if (ret) {
444 dev_err(&data->client->dev, "set default ALS IT returned %d\n",
445 ret);
446 return ret;
447 }
448 data->als_it_val = VCNL4035_ALS_IT_DEFAULT;
449
450 /* set default persistence time - 1 for ALS */
451 ret = regmap_update_bits(data->regmap, VCNL4035_ALS_CONF,
452 VCNL4035_ALS_PERS_MASK,
453 VCNL4035_ALS_PERS_DEFAULT);
454 if (ret) {
455 dev_err(&data->client->dev, "set default PERS returned %d\n",
456 ret);
457 return ret;
458 }
459 data->als_persistence = VCNL4035_ALS_PERS_DEFAULT;
460
461 /* set default HIGH threshold for ALS */
462 ret = regmap_write(data->regmap, VCNL4035_ALS_THDH,
463 VCNL4035_ALS_THDH_DEFAULT);
464 if (ret) {
465 dev_err(&data->client->dev, "set default THDH returned %d\n",
466 ret);
467 return ret;
468 }
469 data->als_thresh_high = VCNL4035_ALS_THDH_DEFAULT;
470
471 /* set default LOW threshold for ALS */
472 ret = regmap_write(data->regmap, VCNL4035_ALS_THDL,
473 VCNL4035_ALS_THDL_DEFAULT);
474 if (ret) {
475 dev_err(&data->client->dev, "set default THDL returned %d\n",
476 ret);
477 return ret;
478 }
479 data->als_thresh_low = VCNL4035_ALS_THDL_DEFAULT;
480
481 return 0;
482}
483
484static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg)
485{
486 switch (reg) {
487 case VCNL4035_ALS_CONF:
488 case VCNL4035_DEV_ID:
489 return false;
490 default:
491 return true;
492 }
493}
494
495static const struct regmap_config vcnl4035_regmap_config = {
496 .name = VCNL4035_REGMAP_NAME,
497 .reg_bits = 8,
498 .val_bits = 16,
499 .max_register = VCNL4035_DEV_ID,
500 .cache_type = REGCACHE_RBTREE,
501 .volatile_reg = vcnl4035_is_volatile_reg,
502 .val_format_endian = REGMAP_ENDIAN_LITTLE,
503};
504
505static int vcnl4035_probe_trigger(struct iio_dev *indio_dev)
506{
507 int ret;
508 struct vcnl4035_data *data = iio_priv(indio_dev);
509
510 data->drdy_trigger0 = devm_iio_trigger_alloc(
511 indio_dev->dev.parent,
512 "%s-dev%d", indio_dev->name, iio_device_id(indio_dev));
513 if (!data->drdy_trigger0)
514 return -ENOMEM;
515
516 data->drdy_trigger0->ops = &vcnl4035_trigger_ops;
517 iio_trigger_set_drvdata(data->drdy_trigger0, indio_dev);
518 ret = devm_iio_trigger_register(indio_dev->dev.parent,
519 data->drdy_trigger0);
520 if (ret) {
521 dev_err(&data->client->dev, "iio trigger register failed\n");
522 return ret;
523 }
524
525 /* Trigger setup */
526 ret = devm_iio_triggered_buffer_setup(indio_dev->dev.parent, indio_dev,
527 NULL, vcnl4035_trigger_consumer_handler,
528 &iio_triggered_buffer_setup_ops);
529 if (ret < 0) {
530 dev_err(&data->client->dev, "iio triggered buffer setup failed\n");
531 return ret;
532 }
533
534 /* IRQ to trigger mapping */
535 ret = devm_request_threaded_irq(&data->client->dev, data->client->irq,
536 NULL, vcnl4035_drdy_irq_thread,
537 IRQF_TRIGGER_LOW | IRQF_ONESHOT,
538 VCNL4035_IRQ_NAME, indio_dev);
539 if (ret < 0)
540 dev_err(&data->client->dev, "request irq %d for trigger0 failed\n",
541 data->client->irq);
542 return ret;
543}
544
545static int vcnl4035_probe(struct i2c_client *client)
546{
547 struct vcnl4035_data *data;
548 struct iio_dev *indio_dev;
549 struct regmap *regmap;
550 int ret;
551
552 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
553 if (!indio_dev)
554 return -ENOMEM;
555
556 regmap = devm_regmap_init_i2c(client, &vcnl4035_regmap_config);
557 if (IS_ERR(regmap)) {
558 dev_err(&client->dev, "regmap_init failed!\n");
559 return PTR_ERR(regmap);
560 }
561
562 data = iio_priv(indio_dev);
563 i2c_set_clientdata(client, indio_dev);
564 data->client = client;
565 data->regmap = regmap;
566
567 indio_dev->info = &vcnl4035_info;
568 indio_dev->name = VCNL4035_DRV_NAME;
569 indio_dev->channels = vcnl4035_channels;
570 indio_dev->num_channels = ARRAY_SIZE(vcnl4035_channels);
571 indio_dev->modes = INDIO_DIRECT_MODE;
572
573 ret = vcnl4035_init(data);
574 if (ret < 0) {
575 dev_err(&client->dev, "vcnl4035 chip init failed\n");
576 return ret;
577 }
578
579 if (client->irq > 0) {
580 ret = vcnl4035_probe_trigger(indio_dev);
581 if (ret < 0) {
582 dev_err(&client->dev, "vcnl4035 unable init trigger\n");
583 goto fail_poweroff;
584 }
585 }
586
587 ret = pm_runtime_set_active(&client->dev);
588 if (ret < 0)
589 goto fail_poweroff;
590
591 ret = iio_device_register(indio_dev);
592 if (ret < 0)
593 goto fail_poweroff;
594
595 pm_runtime_enable(&client->dev);
596 pm_runtime_set_autosuspend_delay(&client->dev, VCNL4035_SLEEP_DELAY_MS);
597 pm_runtime_use_autosuspend(&client->dev);
598
599 return 0;
600
601fail_poweroff:
602 vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE);
603 return ret;
604}
605
606static void vcnl4035_remove(struct i2c_client *client)
607{
608 struct iio_dev *indio_dev = i2c_get_clientdata(client);
609 int ret;
610
611 pm_runtime_dont_use_autosuspend(&client->dev);
612 pm_runtime_disable(&client->dev);
613 iio_device_unregister(indio_dev);
614 pm_runtime_set_suspended(&client->dev);
615
616 ret = vcnl4035_set_als_power_state(iio_priv(indio_dev),
617 VCNL4035_MODE_ALS_DISABLE);
618 if (ret)
619 dev_warn(&client->dev, "Failed to put device into standby (%pe)\n",
620 ERR_PTR(ret));
621}
622
623static int vcnl4035_runtime_suspend(struct device *dev)
624{
625 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
626 struct vcnl4035_data *data = iio_priv(indio_dev);
627 int ret;
628
629 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_DISABLE);
630 regcache_mark_dirty(data->regmap);
631
632 return ret;
633}
634
635static int vcnl4035_runtime_resume(struct device *dev)
636{
637 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
638 struct vcnl4035_data *data = iio_priv(indio_dev);
639 int ret;
640
641 regcache_sync(data->regmap);
642 ret = vcnl4035_set_als_power_state(data, VCNL4035_MODE_ALS_ENABLE);
643 if (ret < 0)
644 return ret;
645
646 /* wait for 1 ALS integration cycle */
647 msleep(data->als_it_val * 100);
648
649 return 0;
650}
651
652static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4035_pm_ops, vcnl4035_runtime_suspend,
653 vcnl4035_runtime_resume, NULL);
654
655static const struct i2c_device_id vcnl4035_id[] = {
656 { "vcnl4035", 0 },
657 { }
658};
659MODULE_DEVICE_TABLE(i2c, vcnl4035_id);
660
661static const struct of_device_id vcnl4035_of_match[] = {
662 { .compatible = "vishay,vcnl4035", },
663 { }
664};
665MODULE_DEVICE_TABLE(of, vcnl4035_of_match);
666
667static struct i2c_driver vcnl4035_driver = {
668 .driver = {
669 .name = VCNL4035_DRV_NAME,
670 .pm = pm_ptr(&vcnl4035_pm_ops),
671 .of_match_table = vcnl4035_of_match,
672 },
673 .probe = vcnl4035_probe,
674 .remove = vcnl4035_remove,
675 .id_table = vcnl4035_id,
676};
677
678module_i2c_driver(vcnl4035_driver);
679
680MODULE_AUTHOR("Parthiban Nallathambi <pn@denx.de>");
681MODULE_DESCRIPTION("VCNL4035 Ambient Light Sensor driver");
682MODULE_LICENSE("GPL v2");