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22#include <linux/kernel.h>
23#include <linux/i2c.h>
24#include <linux/errno.h>
25#include <linux/delay.h>
26#include <linux/mutex.h>
27#include <linux/interrupt.h>
28#include <linux/slab.h>
29#include <linux/module.h>
30#include <linux/iio/events.h>
31#include <linux/iio/iio.h>
32#include <linux/iio/sysfs.h>
33#include "tsl2x7x.h"
34
35
36#define PROX_STAT_CAL 0
37#define PROX_STAT_SAMP 1
38#define MAX_SAMPLES_CAL 200
39
40
41#define TRITON_ID 0x00
42#define SWORDFISH_ID 0x30
43#define HALIBUT_ID 0x20
44
45
46#define TSL2X7X_LUX_CALC_OVER_FLOW 65535
47
48
49
50
51
52
53#define TSL2X7X_MAX_CONFIG_REG 16
54
55
56#define TSL2X7X_CNTRL 0x00
57#define TSL2X7X_ALS_TIME 0X01
58#define TSL2X7X_PRX_TIME 0x02
59#define TSL2X7X_WAIT_TIME 0x03
60#define TSL2X7X_ALS_MINTHRESHLO 0X04
61#define TSL2X7X_ALS_MINTHRESHHI 0X05
62#define TSL2X7X_ALS_MAXTHRESHLO 0X06
63#define TSL2X7X_ALS_MAXTHRESHHI 0X07
64#define TSL2X7X_PRX_MINTHRESHLO 0X08
65#define TSL2X7X_PRX_MINTHRESHHI 0X09
66#define TSL2X7X_PRX_MAXTHRESHLO 0X0A
67#define TSL2X7X_PRX_MAXTHRESHHI 0X0B
68#define TSL2X7X_PERSISTENCE 0x0C
69#define TSL2X7X_PRX_CONFIG 0x0D
70#define TSL2X7X_PRX_COUNT 0x0E
71#define TSL2X7X_GAIN 0x0F
72#define TSL2X7X_NOTUSED 0x10
73#define TSL2X7X_REVID 0x11
74#define TSL2X7X_CHIPID 0x12
75#define TSL2X7X_STATUS 0x13
76#define TSL2X7X_ALS_CHAN0LO 0x14
77#define TSL2X7X_ALS_CHAN0HI 0x15
78#define TSL2X7X_ALS_CHAN1LO 0x16
79#define TSL2X7X_ALS_CHAN1HI 0x17
80#define TSL2X7X_PRX_LO 0x18
81#define TSL2X7X_PRX_HI 0x19
82
83
84#define TSL2X7X_CMD_REG 0x80
85#define TSL2X7X_CMD_SPL_FN 0x60
86
87#define TSL2X7X_CMD_PROX_INT_CLR 0X05
88#define TSL2X7X_CMD_ALS_INT_CLR 0x06
89#define TSL2X7X_CMD_PROXALS_INT_CLR 0X07
90
91
92#define TSL2X7X_CNTL_ADC_ENBL 0x02
93#define TSL2X7X_CNTL_PWR_ON 0x01
94
95
96#define TSL2X7X_STA_ADC_VALID 0x01
97#define TSL2X7X_STA_PRX_VALID 0x02
98#define TSL2X7X_STA_ADC_PRX_VALID (TSL2X7X_STA_ADC_VALID |\
99 TSL2X7X_STA_PRX_VALID)
100#define TSL2X7X_STA_ALS_INTR 0x10
101#define TSL2X7X_STA_PRX_INTR 0x20
102
103
104#define TSL2X7X_CNTL_REG_CLEAR 0x00
105#define TSL2X7X_CNTL_PROX_INT_ENBL 0X20
106#define TSL2X7X_CNTL_ALS_INT_ENBL 0X10
107#define TSL2X7X_CNTL_WAIT_TMR_ENBL 0X08
108#define TSL2X7X_CNTL_PROX_DET_ENBL 0X04
109#define TSL2X7X_CNTL_PWRON 0x01
110#define TSL2X7X_CNTL_ALSPON_ENBL 0x03
111#define TSL2X7X_CNTL_INTALSPON_ENBL 0x13
112#define TSL2X7X_CNTL_PROXPON_ENBL 0x0F
113#define TSL2X7X_CNTL_INTPROXPON_ENBL 0x2F
114
115
116#define TSL2X7X_DIODE0 0x10
117#define TSL2X7X_DIODE1 0x20
118#define TSL2X7X_DIODE_BOTH 0x30
119
120
121#define TSL2X7X_mA100 0x00
122#define TSL2X7X_mA50 0x40
123#define TSL2X7X_mA25 0x80
124#define TSL2X7X_mA13 0xD0
125#define TSL2X7X_MAX_TIMER_CNT (0xFF)
126
127#define TSL2X7X_MIN_ITIME 3
128
129
130enum {
131 tsl2571,
132 tsl2671,
133 tmd2671,
134 tsl2771,
135 tmd2771,
136 tsl2572,
137 tsl2672,
138 tmd2672,
139 tsl2772,
140 tmd2772
141};
142
143enum {
144 TSL2X7X_CHIP_UNKNOWN = 0,
145 TSL2X7X_CHIP_WORKING = 1,
146 TSL2X7X_CHIP_SUSPENDED = 2
147};
148
149struct tsl2x7x_parse_result {
150 int integer;
151 int fract;
152};
153
154
155struct tsl2x7x_als_info {
156 u16 als_ch0;
157 u16 als_ch1;
158 u16 lux;
159};
160
161struct tsl2x7x_prox_stat {
162 int min;
163 int max;
164 int mean;
165 unsigned long stddev;
166};
167
168struct tsl2x7x_chip_info {
169 int chan_table_elements;
170 struct iio_chan_spec channel[4];
171 const struct iio_info *info;
172};
173
174struct tsl2X7X_chip {
175 kernel_ulong_t id;
176 struct mutex prox_mutex;
177 struct mutex als_mutex;
178 struct i2c_client *client;
179 u16 prox_data;
180 struct tsl2x7x_als_info als_cur_info;
181 struct tsl2x7x_settings tsl2x7x_settings;
182 struct tsl2X7X_platform_data *pdata;
183 int als_time_scale;
184 int als_saturation;
185 int tsl2x7x_chip_status;
186 u8 tsl2x7x_config[TSL2X7X_MAX_CONFIG_REG];
187 const struct tsl2x7x_chip_info *chip_info;
188 const struct iio_info *info;
189 s64 event_timestamp;
190
191
192
193 struct tsl2x7x_lux tsl2x7x_device_lux[TSL2X7X_MAX_LUX_TABLE_SIZE];
194};
195
196
197static const struct tsl2x7x_lux tsl2x71_lux_table[] = {
198 { 14461, 611, 1211 },
199 { 18540, 352, 623 },
200 { 0, 0, 0 },
201};
202
203static const struct tsl2x7x_lux tmd2x71_lux_table[] = {
204 { 11635, 115, 256 },
205 { 15536, 87, 179 },
206 { 0, 0, 0 },
207};
208
209static const struct tsl2x7x_lux tsl2x72_lux_table[] = {
210 { 14013, 466, 917 },
211 { 18222, 310, 552 },
212 { 0, 0, 0 },
213};
214
215static const struct tsl2x7x_lux tmd2x72_lux_table[] = {
216 { 13218, 130, 262 },
217 { 17592, 92, 169 },
218 { 0, 0, 0 },
219};
220
221static const struct tsl2x7x_lux *tsl2x7x_default_lux_table_group[] = {
222 [tsl2571] = tsl2x71_lux_table,
223 [tsl2671] = tsl2x71_lux_table,
224 [tmd2671] = tmd2x71_lux_table,
225 [tsl2771] = tsl2x71_lux_table,
226 [tmd2771] = tmd2x71_lux_table,
227 [tsl2572] = tsl2x72_lux_table,
228 [tsl2672] = tsl2x72_lux_table,
229 [tmd2672] = tmd2x72_lux_table,
230 [tsl2772] = tsl2x72_lux_table,
231 [tmd2772] = tmd2x72_lux_table,
232};
233
234static const struct tsl2x7x_settings tsl2x7x_default_settings = {
235 .als_time = 219,
236 .als_gain = 0,
237 .prx_time = 254,
238 .prox_gain = 1,
239 .wait_time = 245,
240 .prox_config = 0,
241 .als_gain_trim = 1000,
242 .als_cal_target = 150,
243 .als_thresh_low = 200,
244 .als_thresh_high = 256,
245 .persistence = 255,
246 .interrupts_en = 0,
247 .prox_thres_low = 0,
248 .prox_thres_high = 512,
249 .prox_max_samples_cal = 30,
250 .prox_pulse_count = 8
251};
252
253static const s16 tsl2X7X_als_gainadj[] = {
254 1,
255 8,
256 16,
257 120
258};
259
260static const s16 tsl2X7X_prx_gainadj[] = {
261 1,
262 2,
263 4,
264 8
265};
266
267
268enum {
269 ALS,
270 PRX,
271 ALSPRX,
272 PRX2,
273 ALSPRX2,
274};
275
276static const u8 device_channel_config[] = {
277 ALS,
278 PRX,
279 PRX,
280 ALSPRX,
281 ALSPRX,
282 ALS,
283 PRX2,
284 PRX2,
285 ALSPRX2,
286 ALSPRX2
287};
288
289
290
291
292
293
294
295
296static int
297tsl2x7x_i2c_read(struct i2c_client *client, u8 reg, u8 *val)
298{
299 int ret;
300
301
302 ret = i2c_smbus_write_byte(client, (TSL2X7X_CMD_REG | reg));
303 if (ret < 0) {
304 dev_err(&client->dev, "failed to write register %x\n", reg);
305 return ret;
306 }
307
308
309 ret = i2c_smbus_read_byte(client);
310 if (ret >= 0)
311 *val = (u8)ret;
312 else
313 dev_err(&client->dev, "failed to read register %x\n", reg);
314
315 return ret;
316}
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333static int tsl2x7x_get_lux(struct iio_dev *indio_dev)
334{
335 u16 ch0, ch1;
336 u32 lux;
337 u64 lux64;
338 u32 ratio;
339 u8 buf[4];
340 struct tsl2x7x_lux *p;
341 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
342 int i, ret;
343 u32 ch0lux = 0;
344 u32 ch1lux = 0;
345
346 if (mutex_trylock(&chip->als_mutex) == 0)
347 return chip->als_cur_info.lux;
348
349 if (chip->tsl2x7x_chip_status != TSL2X7X_CHIP_WORKING) {
350
351 dev_err(&chip->client->dev, "%s: device is not enabled\n",
352 __func__);
353 ret = -EBUSY;
354 goto out_unlock;
355 }
356
357 ret = tsl2x7x_i2c_read(chip->client,
358 (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &buf[0]);
359 if (ret < 0) {
360 dev_err(&chip->client->dev,
361 "%s: Failed to read STATUS Reg\n", __func__);
362 goto out_unlock;
363 }
364
365 if (!(buf[0] & TSL2X7X_STA_ADC_VALID)) {
366 dev_err(&chip->client->dev,
367 "%s: data not valid yet\n", __func__);
368 ret = chip->als_cur_info.lux;
369 goto out_unlock;
370 }
371
372 for (i = 0; i < 4; i++) {
373 ret = tsl2x7x_i2c_read(chip->client,
374 (TSL2X7X_CMD_REG | (TSL2X7X_ALS_CHAN0LO + i)),
375 &buf[i]);
376 if (ret < 0) {
377 dev_err(&chip->client->dev,
378 "failed to read. err=%x\n", ret);
379 goto out_unlock;
380 }
381 }
382
383
384 ret = i2c_smbus_write_byte(chip->client,
385 (TSL2X7X_CMD_REG |
386 TSL2X7X_CMD_SPL_FN |
387 TSL2X7X_CMD_ALS_INT_CLR));
388 if (ret < 0) {
389 dev_err(&chip->client->dev,
390 "i2c_write_command failed - err = %d\n", ret);
391 goto out_unlock;
392 }
393
394
395 ch0 = le16_to_cpup((const __le16 *)&buf[0]);
396 ch1 = le16_to_cpup((const __le16 *)&buf[2]);
397
398 chip->als_cur_info.als_ch0 = ch0;
399 chip->als_cur_info.als_ch1 = ch1;
400
401 if ((ch0 >= chip->als_saturation) || (ch1 >= chip->als_saturation)) {
402 lux = TSL2X7X_LUX_CALC_OVER_FLOW;
403 goto return_max;
404 }
405
406 if (!ch0) {
407
408 ret = chip->als_cur_info.lux;
409 goto out_unlock;
410 }
411
412 ratio = (ch1 << 15) / ch0;
413
414 p = (struct tsl2x7x_lux *) chip->tsl2x7x_device_lux;
415 while (p->ratio != 0 && p->ratio < ratio)
416 p++;
417
418 if (p->ratio == 0) {
419 lux = 0;
420 } else {
421 ch0lux = DIV_ROUND_UP(ch0 * p->ch0,
422 tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]);
423 ch1lux = DIV_ROUND_UP(ch1 * p->ch1,
424 tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain]);
425 lux = ch0lux - ch1lux;
426 }
427
428
429 if (ch1lux > ch0lux) {
430 dev_dbg(&chip->client->dev, "ch1lux > ch0lux-return last value\n");
431 ret = chip->als_cur_info.lux;
432 goto out_unlock;
433 }
434
435
436 if (chip->als_time_scale == 0)
437 lux = 0;
438 else
439 lux = (lux + (chip->als_time_scale >> 1)) /
440 chip->als_time_scale;
441
442
443
444
445
446
447
448
449
450 lux64 = lux;
451 lux64 = lux64 * chip->tsl2x7x_settings.als_gain_trim;
452 lux64 >>= 8;
453 lux = lux64;
454 lux = (lux + 500) / 1000;
455
456 if (lux > TSL2X7X_LUX_CALC_OVER_FLOW)
457 lux = TSL2X7X_LUX_CALC_OVER_FLOW;
458
459
460return_max:
461 chip->als_cur_info.lux = lux;
462 ret = lux;
463
464out_unlock:
465 mutex_unlock(&chip->als_mutex);
466
467 return ret;
468}
469
470
471
472
473
474
475
476static int tsl2x7x_get_prox(struct iio_dev *indio_dev)
477{
478 int i;
479 int ret;
480 u8 status;
481 u8 chdata[2];
482 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
483
484 if (mutex_trylock(&chip->prox_mutex) == 0) {
485 dev_err(&chip->client->dev,
486 "%s: Can't get prox mutex\n", __func__);
487 return -EBUSY;
488 }
489
490 ret = tsl2x7x_i2c_read(chip->client,
491 (TSL2X7X_CMD_REG | TSL2X7X_STATUS), &status);
492 if (ret < 0) {
493 dev_err(&chip->client->dev, "i2c err=%d\n", ret);
494 goto prox_poll_err;
495 }
496
497 switch (chip->id) {
498 case tsl2571:
499 case tsl2671:
500 case tmd2671:
501 case tsl2771:
502 case tmd2771:
503 if (!(status & TSL2X7X_STA_ADC_VALID))
504 goto prox_poll_err;
505 break;
506 case tsl2572:
507 case tsl2672:
508 case tmd2672:
509 case tsl2772:
510 case tmd2772:
511 if (!(status & TSL2X7X_STA_PRX_VALID))
512 goto prox_poll_err;
513 break;
514 }
515
516 for (i = 0; i < 2; i++) {
517 ret = tsl2x7x_i2c_read(chip->client,
518 (TSL2X7X_CMD_REG |
519 (TSL2X7X_PRX_LO + i)), &chdata[i]);
520 if (ret < 0)
521 goto prox_poll_err;
522 }
523
524 chip->prox_data =
525 le16_to_cpup((const __le16 *)&chdata[0]);
526
527prox_poll_err:
528
529 mutex_unlock(&chip->prox_mutex);
530
531 return chip->prox_data;
532}
533
534
535
536
537
538
539
540
541static void tsl2x7x_defaults(struct tsl2X7X_chip *chip)
542{
543
544 if (chip->pdata && chip->pdata->platform_default_settings)
545 memcpy(&(chip->tsl2x7x_settings),
546 chip->pdata->platform_default_settings,
547 sizeof(tsl2x7x_default_settings));
548 else
549 memcpy(&(chip->tsl2x7x_settings),
550 &tsl2x7x_default_settings,
551 sizeof(tsl2x7x_default_settings));
552
553
554 if (chip->pdata && chip->pdata->platform_lux_table[0].ratio != 0)
555 memcpy(chip->tsl2x7x_device_lux,
556 chip->pdata->platform_lux_table,
557 sizeof(chip->pdata->platform_lux_table));
558 else
559 memcpy(chip->tsl2x7x_device_lux,
560 (struct tsl2x7x_lux *)tsl2x7x_default_lux_table_group[chip->id],
561 MAX_DEFAULT_TABLE_BYTES);
562}
563
564
565
566
567
568
569
570static int tsl2x7x_als_calibrate(struct iio_dev *indio_dev)
571{
572 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
573 u8 reg_val;
574 int gain_trim_val;
575 int ret;
576 int lux_val;
577
578 ret = i2c_smbus_write_byte(chip->client,
579 (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
580 if (ret < 0) {
581 dev_err(&chip->client->dev,
582 "failed to write CNTRL register, ret=%d\n", ret);
583 return ret;
584 }
585
586 reg_val = i2c_smbus_read_byte(chip->client);
587 if ((reg_val & (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON))
588 != (TSL2X7X_CNTL_ADC_ENBL | TSL2X7X_CNTL_PWR_ON)) {
589 dev_err(&chip->client->dev,
590 "%s: failed: ADC not enabled\n", __func__);
591 return -1;
592 }
593
594 ret = i2c_smbus_write_byte(chip->client,
595 (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
596 if (ret < 0) {
597 dev_err(&chip->client->dev,
598 "failed to write ctrl reg: ret=%d\n", ret);
599 return ret;
600 }
601
602 reg_val = i2c_smbus_read_byte(chip->client);
603 if ((reg_val & TSL2X7X_STA_ADC_VALID) != TSL2X7X_STA_ADC_VALID) {
604 dev_err(&chip->client->dev,
605 "%s: failed: STATUS - ADC not valid.\n", __func__);
606 return -ENODATA;
607 }
608
609 lux_val = tsl2x7x_get_lux(indio_dev);
610 if (lux_val < 0) {
611 dev_err(&chip->client->dev,
612 "%s: failed to get lux\n", __func__);
613 return lux_val;
614 }
615
616 gain_trim_val = ((chip->tsl2x7x_settings.als_cal_target)
617 * chip->tsl2x7x_settings.als_gain_trim) / lux_val;
618 if ((gain_trim_val < 250) || (gain_trim_val > 4000))
619 return -ERANGE;
620
621 chip->tsl2x7x_settings.als_gain_trim = gain_trim_val;
622 dev_info(&chip->client->dev,
623 "%s als_calibrate completed\n", chip->client->name);
624
625 return (int) gain_trim_val;
626}
627
628static int tsl2x7x_chip_on(struct iio_dev *indio_dev)
629{
630 int i;
631 int ret = 0;
632 u8 *dev_reg;
633 u8 utmp;
634 int als_count;
635 int als_time;
636 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
637 u8 reg_val = 0;
638
639 if (chip->pdata && chip->pdata->power_on)
640 chip->pdata->power_on(indio_dev);
641
642
643 chip->tsl2x7x_config[TSL2X7X_PRX_TIME] =
644 chip->tsl2x7x_settings.prx_time;
645 chip->tsl2x7x_config[TSL2X7X_WAIT_TIME] =
646 chip->tsl2x7x_settings.wait_time;
647 chip->tsl2x7x_config[TSL2X7X_PRX_CONFIG] =
648 chip->tsl2x7x_settings.prox_config;
649
650 chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHLO] =
651 (chip->tsl2x7x_settings.als_thresh_low) & 0xFF;
652 chip->tsl2x7x_config[TSL2X7X_ALS_MINTHRESHHI] =
653 (chip->tsl2x7x_settings.als_thresh_low >> 8) & 0xFF;
654 chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHLO] =
655 (chip->tsl2x7x_settings.als_thresh_high) & 0xFF;
656 chip->tsl2x7x_config[TSL2X7X_ALS_MAXTHRESHHI] =
657 (chip->tsl2x7x_settings.als_thresh_high >> 8) & 0xFF;
658 chip->tsl2x7x_config[TSL2X7X_PERSISTENCE] =
659 chip->tsl2x7x_settings.persistence;
660
661 chip->tsl2x7x_config[TSL2X7X_PRX_COUNT] =
662 chip->tsl2x7x_settings.prox_pulse_count;
663 chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHLO] =
664 (chip->tsl2x7x_settings.prox_thres_low) & 0xFF;
665 chip->tsl2x7x_config[TSL2X7X_PRX_MINTHRESHHI] =
666 (chip->tsl2x7x_settings.prox_thres_low >> 8) & 0xFF;
667 chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHLO] =
668 (chip->tsl2x7x_settings.prox_thres_high) & 0xFF;
669 chip->tsl2x7x_config[TSL2X7X_PRX_MAXTHRESHHI] =
670 (chip->tsl2x7x_settings.prox_thres_high >> 8) & 0xFF;
671
672
673 if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
674
675 dev_info(&chip->client->dev, "device is already enabled\n");
676 return -EINVAL;
677 }
678
679
680 als_count = (chip->tsl2x7x_settings.als_time * 100 + 135) / 270;
681 if (!als_count)
682 als_count = 1;
683
684
685 als_time = (als_count * 27 + 5) / 10;
686 chip->tsl2x7x_config[TSL2X7X_ALS_TIME] = 256 - als_count;
687
688
689 chip->tsl2x7x_config[TSL2X7X_GAIN] =
690 chip->tsl2x7x_settings.als_gain |
691 (TSL2X7X_mA100 | TSL2X7X_DIODE1)
692 | ((chip->tsl2x7x_settings.prox_gain) << 2);
693
694
695 chip->als_saturation = als_count * 922;
696 chip->als_time_scale = (als_time + 25) / 50;
697
698
699
700 utmp = TSL2X7X_CNTL_PWR_ON;
701 ret = i2c_smbus_write_byte_data(chip->client,
702 TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp);
703 if (ret < 0) {
704 dev_err(&chip->client->dev,
705 "%s: failed on CNTRL reg.\n", __func__);
706 return ret;
707 }
708
709
710
711 for (i = 0, dev_reg = chip->tsl2x7x_config;
712 i < TSL2X7X_MAX_CONFIG_REG; i++) {
713 ret = i2c_smbus_write_byte_data(chip->client,
714 TSL2X7X_CMD_REG + i, *dev_reg++);
715 if (ret < 0) {
716 dev_err(&chip->client->dev,
717 "failed on write to reg %d.\n", i);
718 return ret;
719 }
720 }
721
722 mdelay(3);
723
724
725
726 utmp = TSL2X7X_CNTL_PWR_ON |
727 TSL2X7X_CNTL_ADC_ENBL |
728 TSL2X7X_CNTL_PROX_DET_ENBL;
729 ret = i2c_smbus_write_byte_data(chip->client,
730 TSL2X7X_CMD_REG | TSL2X7X_CNTRL, utmp);
731 if (ret < 0) {
732 dev_err(&chip->client->dev,
733 "%s: failed on 2nd CTRL reg.\n", __func__);
734 return ret;
735 }
736
737 chip->tsl2x7x_chip_status = TSL2X7X_CHIP_WORKING;
738
739 if (chip->tsl2x7x_settings.interrupts_en != 0) {
740 dev_info(&chip->client->dev, "Setting Up Interrupt(s)\n");
741
742 reg_val = TSL2X7X_CNTL_PWR_ON | TSL2X7X_CNTL_ADC_ENBL;
743 if ((chip->tsl2x7x_settings.interrupts_en == 0x20) ||
744 (chip->tsl2x7x_settings.interrupts_en == 0x30))
745 reg_val |= TSL2X7X_CNTL_PROX_DET_ENBL;
746
747 reg_val |= chip->tsl2x7x_settings.interrupts_en;
748 ret = i2c_smbus_write_byte_data(chip->client,
749 (TSL2X7X_CMD_REG | TSL2X7X_CNTRL), reg_val);
750 if (ret < 0)
751 dev_err(&chip->client->dev,
752 "%s: failed in tsl2x7x_IOCTL_INT_SET.\n",
753 __func__);
754
755
756 ret = i2c_smbus_write_byte(chip->client,
757 TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN |
758 TSL2X7X_CMD_PROXALS_INT_CLR);
759 if (ret < 0) {
760 dev_err(&chip->client->dev,
761 "%s: Failed to clear Int status\n",
762 __func__);
763 return ret;
764 }
765 }
766
767 return ret;
768}
769
770static int tsl2x7x_chip_off(struct iio_dev *indio_dev)
771{
772 int ret;
773 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
774
775
776 chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED;
777
778 ret = i2c_smbus_write_byte_data(chip->client,
779 TSL2X7X_CMD_REG | TSL2X7X_CNTRL, 0x00);
780
781 if (chip->pdata && chip->pdata->power_off)
782 chip->pdata->power_off(chip->client);
783
784 return ret;
785}
786
787
788
789
790
791
792
793
794
795
796
797static
798int tsl2x7x_invoke_change(struct iio_dev *indio_dev)
799{
800 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
801 int device_status = chip->tsl2x7x_chip_status;
802
803 mutex_lock(&chip->als_mutex);
804 mutex_lock(&chip->prox_mutex);
805
806 if (device_status == TSL2X7X_CHIP_WORKING)
807 tsl2x7x_chip_off(indio_dev);
808
809 tsl2x7x_chip_on(indio_dev);
810
811 if (device_status != TSL2X7X_CHIP_WORKING)
812 tsl2x7x_chip_off(indio_dev);
813
814 mutex_unlock(&chip->prox_mutex);
815 mutex_unlock(&chip->als_mutex);
816
817 return 0;
818}
819
820static
821void tsl2x7x_prox_calculate(int *data, int length,
822 struct tsl2x7x_prox_stat *statP)
823{
824 int i;
825 int sample_sum;
826 int tmp;
827
828 if (!length)
829 length = 1;
830
831 sample_sum = 0;
832 statP->min = INT_MAX;
833 statP->max = INT_MIN;
834 for (i = 0; i < length; i++) {
835 sample_sum += data[i];
836 statP->min = min(statP->min, data[i]);
837 statP->max = max(statP->max, data[i]);
838 }
839
840 statP->mean = sample_sum / length;
841 sample_sum = 0;
842 for (i = 0; i < length; i++) {
843 tmp = data[i] - statP->mean;
844 sample_sum += tmp * tmp;
845 }
846 statP->stddev = int_sqrt((long)sample_sum)/length;
847}
848
849
850
851
852
853
854
855
856static void tsl2x7x_prox_cal(struct iio_dev *indio_dev)
857{
858 int prox_history[MAX_SAMPLES_CAL + 1];
859 int i;
860 struct tsl2x7x_prox_stat prox_stat_data[2];
861 struct tsl2x7x_prox_stat *calP;
862 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
863 u8 tmp_irq_settings;
864 u8 current_state = chip->tsl2x7x_chip_status;
865
866 if (chip->tsl2x7x_settings.prox_max_samples_cal > MAX_SAMPLES_CAL) {
867 dev_err(&chip->client->dev,
868 "max prox samples cal is too big: %d\n",
869 chip->tsl2x7x_settings.prox_max_samples_cal);
870 chip->tsl2x7x_settings.prox_max_samples_cal = MAX_SAMPLES_CAL;
871 }
872
873
874 tsl2x7x_chip_off(indio_dev);
875
876
877 tmp_irq_settings = chip->tsl2x7x_settings.interrupts_en;
878 chip->tsl2x7x_settings.interrupts_en |= TSL2X7X_CNTL_PROX_INT_ENBL;
879
880
881 tsl2x7x_chip_on(indio_dev);
882
883
884 for (i = 0; i < chip->tsl2x7x_settings.prox_max_samples_cal; i++) {
885 mdelay(15);
886 tsl2x7x_get_prox(indio_dev);
887 prox_history[i] = chip->prox_data;
888 dev_info(&chip->client->dev, "2 i=%d prox data= %d\n",
889 i, chip->prox_data);
890 }
891
892 tsl2x7x_chip_off(indio_dev);
893 calP = &prox_stat_data[PROX_STAT_CAL];
894 tsl2x7x_prox_calculate(prox_history,
895 chip->tsl2x7x_settings.prox_max_samples_cal, calP);
896 chip->tsl2x7x_settings.prox_thres_high = (calP->max << 1) - calP->mean;
897
898 dev_info(&chip->client->dev, " cal min=%d mean=%d max=%d\n",
899 calP->min, calP->mean, calP->max);
900 dev_info(&chip->client->dev,
901 "%s proximity threshold set to %d\n",
902 chip->client->name, chip->tsl2x7x_settings.prox_thres_high);
903
904
905 chip->tsl2x7x_settings.interrupts_en = tmp_irq_settings;
906 if (current_state == TSL2X7X_CHIP_WORKING)
907 tsl2x7x_chip_on(indio_dev);
908}
909
910static ssize_t tsl2x7x_power_state_show(struct device *dev,
911 struct device_attribute *attr, char *buf)
912{
913 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
914
915 return snprintf(buf, PAGE_SIZE, "%d\n", chip->tsl2x7x_chip_status);
916}
917
918static ssize_t tsl2x7x_power_state_store(struct device *dev,
919 struct device_attribute *attr, const char *buf, size_t len)
920{
921 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
922 bool value;
923
924 if (strtobool(buf, &value))
925 return -EINVAL;
926
927 if (value)
928 tsl2x7x_chip_on(indio_dev);
929 else
930 tsl2x7x_chip_off(indio_dev);
931
932 return len;
933}
934
935static ssize_t tsl2x7x_gain_available_show(struct device *dev,
936 struct device_attribute *attr, char *buf)
937{
938 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
939
940 switch (chip->id) {
941 case tsl2571:
942 case tsl2671:
943 case tmd2671:
944 case tsl2771:
945 case tmd2771:
946 return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 128");
947 }
948
949 return snprintf(buf, PAGE_SIZE, "%s\n", "1 8 16 120");
950}
951
952static ssize_t tsl2x7x_prox_gain_available_show(struct device *dev,
953 struct device_attribute *attr, char *buf)
954{
955 return snprintf(buf, PAGE_SIZE, "%s\n", "1 2 4 8");
956}
957
958static ssize_t tsl2x7x_als_time_show(struct device *dev,
959 struct device_attribute *attr, char *buf)
960{
961 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
962 int y, z;
963
964 y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
965 z = y * TSL2X7X_MIN_ITIME;
966 y /= 1000;
967 z %= 1000;
968
969 return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
970}
971
972static ssize_t tsl2x7x_als_time_store(struct device *dev,
973 struct device_attribute *attr, const char *buf, size_t len)
974{
975 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
976 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
977 struct tsl2x7x_parse_result result;
978 int ret;
979
980 ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
981 if (ret)
982 return ret;
983
984 result.fract /= 3;
985 chip->tsl2x7x_settings.als_time =
986 TSL2X7X_MAX_TIMER_CNT - (u8)result.fract;
987
988 dev_info(&chip->client->dev, "%s: als time = %d",
989 __func__, chip->tsl2x7x_settings.als_time);
990
991 tsl2x7x_invoke_change(indio_dev);
992
993 return IIO_VAL_INT_PLUS_MICRO;
994}
995
996static IIO_CONST_ATTR(in_illuminance0_integration_time_available,
997 ".00272 - .696");
998
999static ssize_t tsl2x7x_als_cal_target_show(struct device *dev,
1000 struct device_attribute *attr, char *buf)
1001{
1002 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
1003
1004 return snprintf(buf, PAGE_SIZE, "%d\n",
1005 chip->tsl2x7x_settings.als_cal_target);
1006}
1007
1008static ssize_t tsl2x7x_als_cal_target_store(struct device *dev,
1009 struct device_attribute *attr, const char *buf, size_t len)
1010{
1011 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
1012 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1013 unsigned long value;
1014
1015 if (kstrtoul(buf, 0, &value))
1016 return -EINVAL;
1017
1018 if (value)
1019 chip->tsl2x7x_settings.als_cal_target = value;
1020
1021 tsl2x7x_invoke_change(indio_dev);
1022
1023 return len;
1024}
1025
1026
1027static ssize_t tsl2x7x_als_persistence_show(struct device *dev,
1028 struct device_attribute *attr, char *buf)
1029{
1030 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
1031 int y, z, filter_delay;
1032
1033
1034 y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
1035 z = y * TSL2X7X_MIN_ITIME;
1036 filter_delay = z * (chip->tsl2x7x_settings.persistence & 0x0F);
1037 y = filter_delay / 1000;
1038 z = filter_delay % 1000;
1039
1040 return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
1041}
1042
1043static ssize_t tsl2x7x_als_persistence_store(struct device *dev,
1044 struct device_attribute *attr, const char *buf, size_t len)
1045{
1046 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
1047 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1048 struct tsl2x7x_parse_result result;
1049 int y, z, filter_delay;
1050 int ret;
1051
1052 ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
1053 if (ret)
1054 return ret;
1055
1056 y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.als_time) + 1;
1057 z = y * TSL2X7X_MIN_ITIME;
1058
1059 filter_delay =
1060 DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
1061
1062 chip->tsl2x7x_settings.persistence &= 0xF0;
1063 chip->tsl2x7x_settings.persistence |= (filter_delay & 0x0F);
1064
1065 dev_info(&chip->client->dev, "%s: als persistence = %d",
1066 __func__, filter_delay);
1067
1068 tsl2x7x_invoke_change(indio_dev);
1069
1070 return IIO_VAL_INT_PLUS_MICRO;
1071}
1072
1073static ssize_t tsl2x7x_prox_persistence_show(struct device *dev,
1074 struct device_attribute *attr, char *buf)
1075{
1076 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
1077 int y, z, filter_delay;
1078
1079
1080 y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
1081 z = y * TSL2X7X_MIN_ITIME;
1082 filter_delay = z * ((chip->tsl2x7x_settings.persistence & 0xF0) >> 4);
1083 y = filter_delay / 1000;
1084 z = filter_delay % 1000;
1085
1086 return snprintf(buf, PAGE_SIZE, "%d.%03d\n", y, z);
1087}
1088
1089static ssize_t tsl2x7x_prox_persistence_store(struct device *dev,
1090 struct device_attribute *attr, const char *buf, size_t len)
1091{
1092 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
1093 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1094 struct tsl2x7x_parse_result result;
1095 int y, z, filter_delay;
1096 int ret;
1097
1098 ret = iio_str_to_fixpoint(buf, 100, &result.integer, &result.fract);
1099 if (ret)
1100 return ret;
1101
1102 y = (TSL2X7X_MAX_TIMER_CNT - (u8)chip->tsl2x7x_settings.prx_time) + 1;
1103 z = y * TSL2X7X_MIN_ITIME;
1104
1105 filter_delay =
1106 DIV_ROUND_UP((result.integer * 1000) + result.fract, z);
1107
1108 chip->tsl2x7x_settings.persistence &= 0x0F;
1109 chip->tsl2x7x_settings.persistence |= ((filter_delay << 4) & 0xF0);
1110
1111 dev_info(&chip->client->dev, "%s: prox persistence = %d",
1112 __func__, filter_delay);
1113
1114 tsl2x7x_invoke_change(indio_dev);
1115
1116 return IIO_VAL_INT_PLUS_MICRO;
1117}
1118
1119static ssize_t tsl2x7x_do_calibrate(struct device *dev,
1120 struct device_attribute *attr, const char *buf, size_t len)
1121{
1122 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
1123 bool value;
1124
1125 if (strtobool(buf, &value))
1126 return -EINVAL;
1127
1128 if (value)
1129 tsl2x7x_als_calibrate(indio_dev);
1130
1131 tsl2x7x_invoke_change(indio_dev);
1132
1133 return len;
1134}
1135
1136static ssize_t tsl2x7x_luxtable_show(struct device *dev,
1137 struct device_attribute *attr, char *buf)
1138{
1139 struct tsl2X7X_chip *chip = iio_priv(dev_to_iio_dev(dev));
1140 int i = 0;
1141 int offset = 0;
1142
1143 while (i < (TSL2X7X_MAX_LUX_TABLE_SIZE * 3)) {
1144 offset += snprintf(buf + offset, PAGE_SIZE, "%u,%u,%u,",
1145 chip->tsl2x7x_device_lux[i].ratio,
1146 chip->tsl2x7x_device_lux[i].ch0,
1147 chip->tsl2x7x_device_lux[i].ch1);
1148 if (chip->tsl2x7x_device_lux[i].ratio == 0) {
1149
1150
1151 offset--;
1152 break;
1153 }
1154 i++;
1155 }
1156
1157 offset += snprintf(buf + offset, PAGE_SIZE, "\n");
1158 return offset;
1159}
1160
1161static ssize_t tsl2x7x_luxtable_store(struct device *dev,
1162 struct device_attribute *attr, const char *buf, size_t len)
1163{
1164 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
1165 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1166 int value[ARRAY_SIZE(chip->tsl2x7x_device_lux)*3 + 1];
1167 int n;
1168
1169 get_options(buf, ARRAY_SIZE(value), value);
1170
1171
1172
1173
1174
1175
1176 n = value[0];
1177 if ((n % 3) || n < 6 ||
1178 n > ((ARRAY_SIZE(chip->tsl2x7x_device_lux) - 1) * 3)) {
1179 dev_info(dev, "LUX TABLE INPUT ERROR 1 Value[0]=%d\n", n);
1180 return -EINVAL;
1181 }
1182
1183 if ((value[(n - 2)] | value[(n - 1)] | value[n]) != 0) {
1184 dev_info(dev, "LUX TABLE INPUT ERROR 2 Value[0]=%d\n", n);
1185 return -EINVAL;
1186 }
1187
1188 if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING)
1189 tsl2x7x_chip_off(indio_dev);
1190
1191
1192 memset(chip->tsl2x7x_device_lux, 0, sizeof(chip->tsl2x7x_device_lux));
1193 memcpy(chip->tsl2x7x_device_lux, &value[1], (value[0] * 4));
1194
1195 tsl2x7x_invoke_change(indio_dev);
1196
1197 return len;
1198}
1199
1200static ssize_t tsl2x7x_do_prox_calibrate(struct device *dev,
1201 struct device_attribute *attr, const char *buf, size_t len)
1202{
1203 struct iio_dev *indio_dev = dev_to_iio_dev(dev);
1204 bool value;
1205
1206 if (strtobool(buf, &value))
1207 return -EINVAL;
1208
1209 if (value)
1210 tsl2x7x_prox_cal(indio_dev);
1211
1212 tsl2x7x_invoke_change(indio_dev);
1213
1214 return len;
1215}
1216
1217static int tsl2x7x_read_interrupt_config(struct iio_dev *indio_dev,
1218 const struct iio_chan_spec *chan,
1219 enum iio_event_type type,
1220 enum iio_event_direction dir)
1221{
1222 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1223 int ret;
1224
1225 if (chan->type == IIO_INTENSITY)
1226 ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x10);
1227 else
1228 ret = !!(chip->tsl2x7x_settings.interrupts_en & 0x20);
1229
1230 return ret;
1231}
1232
1233static int tsl2x7x_write_interrupt_config(struct iio_dev *indio_dev,
1234 const struct iio_chan_spec *chan,
1235 enum iio_event_type type,
1236 enum iio_event_direction dir,
1237 int val)
1238{
1239 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1240
1241 if (chan->type == IIO_INTENSITY) {
1242 if (val)
1243 chip->tsl2x7x_settings.interrupts_en |= 0x10;
1244 else
1245 chip->tsl2x7x_settings.interrupts_en &= 0x20;
1246 } else {
1247 if (val)
1248 chip->tsl2x7x_settings.interrupts_en |= 0x20;
1249 else
1250 chip->tsl2x7x_settings.interrupts_en &= 0x10;
1251 }
1252
1253 tsl2x7x_invoke_change(indio_dev);
1254
1255 return 0;
1256}
1257
1258static int tsl2x7x_write_thresh(struct iio_dev *indio_dev,
1259 const struct iio_chan_spec *chan,
1260 enum iio_event_type type,
1261 enum iio_event_direction dir,
1262 enum iio_event_info info,
1263 int val, int val2)
1264{
1265 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1266
1267 if (chan->type == IIO_INTENSITY) {
1268 switch (dir) {
1269 case IIO_EV_DIR_RISING:
1270 chip->tsl2x7x_settings.als_thresh_high = val;
1271 break;
1272 case IIO_EV_DIR_FALLING:
1273 chip->tsl2x7x_settings.als_thresh_low = val;
1274 break;
1275 default:
1276 return -EINVAL;
1277 }
1278 } else {
1279 switch (dir) {
1280 case IIO_EV_DIR_RISING:
1281 chip->tsl2x7x_settings.prox_thres_high = val;
1282 break;
1283 case IIO_EV_DIR_FALLING:
1284 chip->tsl2x7x_settings.prox_thres_low = val;
1285 break;
1286 default:
1287 return -EINVAL;
1288 }
1289 }
1290
1291 tsl2x7x_invoke_change(indio_dev);
1292
1293 return 0;
1294}
1295
1296static int tsl2x7x_read_thresh(struct iio_dev *indio_dev,
1297 const struct iio_chan_spec *chan,
1298 enum iio_event_type type,
1299 enum iio_event_direction dir,
1300 enum iio_event_info info,
1301 int *val, int *val2)
1302{
1303 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1304
1305 if (chan->type == IIO_INTENSITY) {
1306 switch (dir) {
1307 case IIO_EV_DIR_RISING:
1308 *val = chip->tsl2x7x_settings.als_thresh_high;
1309 break;
1310 case IIO_EV_DIR_FALLING:
1311 *val = chip->tsl2x7x_settings.als_thresh_low;
1312 break;
1313 default:
1314 return -EINVAL;
1315 }
1316 } else {
1317 switch (dir) {
1318 case IIO_EV_DIR_RISING:
1319 *val = chip->tsl2x7x_settings.prox_thres_high;
1320 break;
1321 case IIO_EV_DIR_FALLING:
1322 *val = chip->tsl2x7x_settings.prox_thres_low;
1323 break;
1324 default:
1325 return -EINVAL;
1326 }
1327 }
1328
1329 return IIO_VAL_INT;
1330}
1331
1332static int tsl2x7x_read_raw(struct iio_dev *indio_dev,
1333 struct iio_chan_spec const *chan,
1334 int *val,
1335 int *val2,
1336 long mask)
1337{
1338 int ret = -EINVAL;
1339 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1340
1341 switch (mask) {
1342 case IIO_CHAN_INFO_PROCESSED:
1343 switch (chan->type) {
1344 case IIO_LIGHT:
1345 tsl2x7x_get_lux(indio_dev);
1346 *val = chip->als_cur_info.lux;
1347 ret = IIO_VAL_INT;
1348 break;
1349 default:
1350 return -EINVAL;
1351 }
1352 break;
1353 case IIO_CHAN_INFO_RAW:
1354 switch (chan->type) {
1355 case IIO_INTENSITY:
1356 tsl2x7x_get_lux(indio_dev);
1357 if (chan->channel == 0)
1358 *val = chip->als_cur_info.als_ch0;
1359 else
1360 *val = chip->als_cur_info.als_ch1;
1361 ret = IIO_VAL_INT;
1362 break;
1363 case IIO_PROXIMITY:
1364 tsl2x7x_get_prox(indio_dev);
1365 *val = chip->prox_data;
1366 ret = IIO_VAL_INT;
1367 break;
1368 default:
1369 return -EINVAL;
1370 }
1371 break;
1372 case IIO_CHAN_INFO_CALIBSCALE:
1373 if (chan->type == IIO_LIGHT)
1374 *val =
1375 tsl2X7X_als_gainadj[chip->tsl2x7x_settings.als_gain];
1376 else
1377 *val =
1378 tsl2X7X_prx_gainadj[chip->tsl2x7x_settings.prox_gain];
1379 ret = IIO_VAL_INT;
1380 break;
1381 case IIO_CHAN_INFO_CALIBBIAS:
1382 *val = chip->tsl2x7x_settings.als_gain_trim;
1383 ret = IIO_VAL_INT;
1384 break;
1385
1386 default:
1387 ret = -EINVAL;
1388 }
1389
1390 return ret;
1391}
1392
1393static int tsl2x7x_write_raw(struct iio_dev *indio_dev,
1394 struct iio_chan_spec const *chan,
1395 int val,
1396 int val2,
1397 long mask)
1398{
1399 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1400
1401 switch (mask) {
1402 case IIO_CHAN_INFO_CALIBSCALE:
1403 if (chan->type == IIO_INTENSITY) {
1404 switch (val) {
1405 case 1:
1406 chip->tsl2x7x_settings.als_gain = 0;
1407 break;
1408 case 8:
1409 chip->tsl2x7x_settings.als_gain = 1;
1410 break;
1411 case 16:
1412 chip->tsl2x7x_settings.als_gain = 2;
1413 break;
1414 case 120:
1415 switch (chip->id) {
1416 case tsl2572:
1417 case tsl2672:
1418 case tmd2672:
1419 case tsl2772:
1420 case tmd2772:
1421 return -EINVAL;
1422 }
1423 chip->tsl2x7x_settings.als_gain = 3;
1424 break;
1425 case 128:
1426 switch (chip->id) {
1427 case tsl2571:
1428 case tsl2671:
1429 case tmd2671:
1430 case tsl2771:
1431 case tmd2771:
1432 return -EINVAL;
1433 }
1434 chip->tsl2x7x_settings.als_gain = 3;
1435 break;
1436 default:
1437 return -EINVAL;
1438 }
1439 } else {
1440 switch (val) {
1441 case 1:
1442 chip->tsl2x7x_settings.prox_gain = 0;
1443 break;
1444 case 2:
1445 chip->tsl2x7x_settings.prox_gain = 1;
1446 break;
1447 case 4:
1448 chip->tsl2x7x_settings.prox_gain = 2;
1449 break;
1450 case 8:
1451 chip->tsl2x7x_settings.prox_gain = 3;
1452 break;
1453 default:
1454 return -EINVAL;
1455 }
1456 }
1457 break;
1458 case IIO_CHAN_INFO_CALIBBIAS:
1459 chip->tsl2x7x_settings.als_gain_trim = val;
1460 break;
1461
1462 default:
1463 return -EINVAL;
1464 }
1465
1466 tsl2x7x_invoke_change(indio_dev);
1467
1468 return 0;
1469}
1470
1471static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR,
1472 tsl2x7x_power_state_show, tsl2x7x_power_state_store);
1473
1474static DEVICE_ATTR(in_proximity0_calibscale_available, S_IRUGO,
1475 tsl2x7x_prox_gain_available_show, NULL);
1476
1477static DEVICE_ATTR(in_illuminance0_calibscale_available, S_IRUGO,
1478 tsl2x7x_gain_available_show, NULL);
1479
1480static DEVICE_ATTR(in_illuminance0_integration_time, S_IRUGO | S_IWUSR,
1481 tsl2x7x_als_time_show, tsl2x7x_als_time_store);
1482
1483static DEVICE_ATTR(in_illuminance0_target_input, S_IRUGO | S_IWUSR,
1484 tsl2x7x_als_cal_target_show, tsl2x7x_als_cal_target_store);
1485
1486static DEVICE_ATTR(in_illuminance0_calibrate, S_IWUSR, NULL,
1487 tsl2x7x_do_calibrate);
1488
1489static DEVICE_ATTR(in_proximity0_calibrate, S_IWUSR, NULL,
1490 tsl2x7x_do_prox_calibrate);
1491
1492static DEVICE_ATTR(in_illuminance0_lux_table, S_IRUGO | S_IWUSR,
1493 tsl2x7x_luxtable_show, tsl2x7x_luxtable_store);
1494
1495static DEVICE_ATTR(in_intensity0_thresh_period, S_IRUGO | S_IWUSR,
1496 tsl2x7x_als_persistence_show, tsl2x7x_als_persistence_store);
1497
1498static DEVICE_ATTR(in_proximity0_thresh_period, S_IRUGO | S_IWUSR,
1499 tsl2x7x_prox_persistence_show, tsl2x7x_prox_persistence_store);
1500
1501
1502static int tsl2x7x_device_id(unsigned char *id, int target)
1503{
1504 switch (target) {
1505 case tsl2571:
1506 case tsl2671:
1507 case tsl2771:
1508 return (*id & 0xf0) == TRITON_ID;
1509 case tmd2671:
1510 case tmd2771:
1511 return (*id & 0xf0) == HALIBUT_ID;
1512 case tsl2572:
1513 case tsl2672:
1514 case tmd2672:
1515 case tsl2772:
1516 case tmd2772:
1517 return (*id & 0xf0) == SWORDFISH_ID;
1518 }
1519
1520 return -EINVAL;
1521}
1522
1523static irqreturn_t tsl2x7x_event_handler(int irq, void *private)
1524{
1525 struct iio_dev *indio_dev = private;
1526 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1527 s64 timestamp = iio_get_time_ns();
1528 int ret;
1529 u8 value;
1530
1531 value = i2c_smbus_read_byte_data(chip->client,
1532 TSL2X7X_CMD_REG | TSL2X7X_STATUS);
1533
1534
1535 if (value & TSL2X7X_STA_PRX_INTR) {
1536 tsl2x7x_get_prox(indio_dev);
1537 iio_push_event(indio_dev,
1538 IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY,
1539 0,
1540 IIO_EV_TYPE_THRESH,
1541 IIO_EV_DIR_EITHER),
1542 timestamp);
1543 }
1544
1545 if (value & TSL2X7X_STA_ALS_INTR) {
1546 tsl2x7x_get_lux(indio_dev);
1547 iio_push_event(indio_dev,
1548 IIO_UNMOD_EVENT_CODE(IIO_LIGHT,
1549 0,
1550 IIO_EV_TYPE_THRESH,
1551 IIO_EV_DIR_EITHER),
1552 timestamp);
1553 }
1554
1555 ret = i2c_smbus_write_byte(chip->client,
1556 TSL2X7X_CMD_REG | TSL2X7X_CMD_SPL_FN |
1557 TSL2X7X_CMD_PROXALS_INT_CLR);
1558 if (ret < 0)
1559 dev_err(&chip->client->dev,
1560 "Failed to clear irq from event handler. err = %d\n",
1561 ret);
1562
1563 return IRQ_HANDLED;
1564}
1565
1566static struct attribute *tsl2x7x_ALS_device_attrs[] = {
1567 &dev_attr_power_state.attr,
1568 &dev_attr_in_illuminance0_calibscale_available.attr,
1569 &dev_attr_in_illuminance0_integration_time.attr,
1570 &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
1571 &dev_attr_in_illuminance0_target_input.attr,
1572 &dev_attr_in_illuminance0_calibrate.attr,
1573 &dev_attr_in_illuminance0_lux_table.attr,
1574 NULL
1575};
1576
1577static struct attribute *tsl2x7x_PRX_device_attrs[] = {
1578 &dev_attr_power_state.attr,
1579 &dev_attr_in_proximity0_calibrate.attr,
1580 NULL
1581};
1582
1583static struct attribute *tsl2x7x_ALSPRX_device_attrs[] = {
1584 &dev_attr_power_state.attr,
1585 &dev_attr_in_illuminance0_calibscale_available.attr,
1586 &dev_attr_in_illuminance0_integration_time.attr,
1587 &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
1588 &dev_attr_in_illuminance0_target_input.attr,
1589 &dev_attr_in_illuminance0_calibrate.attr,
1590 &dev_attr_in_illuminance0_lux_table.attr,
1591 &dev_attr_in_proximity0_calibrate.attr,
1592 NULL
1593};
1594
1595static struct attribute *tsl2x7x_PRX2_device_attrs[] = {
1596 &dev_attr_power_state.attr,
1597 &dev_attr_in_proximity0_calibrate.attr,
1598 &dev_attr_in_proximity0_calibscale_available.attr,
1599 NULL
1600};
1601
1602static struct attribute *tsl2x7x_ALSPRX2_device_attrs[] = {
1603 &dev_attr_power_state.attr,
1604 &dev_attr_in_illuminance0_calibscale_available.attr,
1605 &dev_attr_in_illuminance0_integration_time.attr,
1606 &iio_const_attr_in_illuminance0_integration_time_available.dev_attr.attr,
1607 &dev_attr_in_illuminance0_target_input.attr,
1608 &dev_attr_in_illuminance0_calibrate.attr,
1609 &dev_attr_in_illuminance0_lux_table.attr,
1610 &dev_attr_in_proximity0_calibrate.attr,
1611 &dev_attr_in_proximity0_calibscale_available.attr,
1612 NULL
1613};
1614
1615static struct attribute *tsl2X7X_ALS_event_attrs[] = {
1616 &dev_attr_in_intensity0_thresh_period.attr,
1617 NULL,
1618};
1619static struct attribute *tsl2X7X_PRX_event_attrs[] = {
1620 &dev_attr_in_proximity0_thresh_period.attr,
1621 NULL,
1622};
1623
1624static struct attribute *tsl2X7X_ALSPRX_event_attrs[] = {
1625 &dev_attr_in_intensity0_thresh_period.attr,
1626 &dev_attr_in_proximity0_thresh_period.attr,
1627 NULL,
1628};
1629
1630static const struct attribute_group tsl2X7X_device_attr_group_tbl[] = {
1631 [ALS] = {
1632 .attrs = tsl2x7x_ALS_device_attrs,
1633 },
1634 [PRX] = {
1635 .attrs = tsl2x7x_PRX_device_attrs,
1636 },
1637 [ALSPRX] = {
1638 .attrs = tsl2x7x_ALSPRX_device_attrs,
1639 },
1640 [PRX2] = {
1641 .attrs = tsl2x7x_PRX2_device_attrs,
1642 },
1643 [ALSPRX2] = {
1644 .attrs = tsl2x7x_ALSPRX2_device_attrs,
1645 },
1646};
1647
1648static struct attribute_group tsl2X7X_event_attr_group_tbl[] = {
1649 [ALS] = {
1650 .attrs = tsl2X7X_ALS_event_attrs,
1651 .name = "events",
1652 },
1653 [PRX] = {
1654 .attrs = tsl2X7X_PRX_event_attrs,
1655 .name = "events",
1656 },
1657 [ALSPRX] = {
1658 .attrs = tsl2X7X_ALSPRX_event_attrs,
1659 .name = "events",
1660 },
1661};
1662
1663static const struct iio_info tsl2X7X_device_info[] = {
1664 [ALS] = {
1665 .attrs = &tsl2X7X_device_attr_group_tbl[ALS],
1666 .event_attrs = &tsl2X7X_event_attr_group_tbl[ALS],
1667 .driver_module = THIS_MODULE,
1668 .read_raw = &tsl2x7x_read_raw,
1669 .write_raw = &tsl2x7x_write_raw,
1670 .read_event_value = &tsl2x7x_read_thresh,
1671 .write_event_value = &tsl2x7x_write_thresh,
1672 .read_event_config = &tsl2x7x_read_interrupt_config,
1673 .write_event_config = &tsl2x7x_write_interrupt_config,
1674 },
1675 [PRX] = {
1676 .attrs = &tsl2X7X_device_attr_group_tbl[PRX],
1677 .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
1678 .driver_module = THIS_MODULE,
1679 .read_raw = &tsl2x7x_read_raw,
1680 .write_raw = &tsl2x7x_write_raw,
1681 .read_event_value = &tsl2x7x_read_thresh,
1682 .write_event_value = &tsl2x7x_write_thresh,
1683 .read_event_config = &tsl2x7x_read_interrupt_config,
1684 .write_event_config = &tsl2x7x_write_interrupt_config,
1685 },
1686 [ALSPRX] = {
1687 .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX],
1688 .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
1689 .driver_module = THIS_MODULE,
1690 .read_raw = &tsl2x7x_read_raw,
1691 .write_raw = &tsl2x7x_write_raw,
1692 .read_event_value = &tsl2x7x_read_thresh,
1693 .write_event_value = &tsl2x7x_write_thresh,
1694 .read_event_config = &tsl2x7x_read_interrupt_config,
1695 .write_event_config = &tsl2x7x_write_interrupt_config,
1696 },
1697 [PRX2] = {
1698 .attrs = &tsl2X7X_device_attr_group_tbl[PRX2],
1699 .event_attrs = &tsl2X7X_event_attr_group_tbl[PRX],
1700 .driver_module = THIS_MODULE,
1701 .read_raw = &tsl2x7x_read_raw,
1702 .write_raw = &tsl2x7x_write_raw,
1703 .read_event_value = &tsl2x7x_read_thresh,
1704 .write_event_value = &tsl2x7x_write_thresh,
1705 .read_event_config = &tsl2x7x_read_interrupt_config,
1706 .write_event_config = &tsl2x7x_write_interrupt_config,
1707 },
1708 [ALSPRX2] = {
1709 .attrs = &tsl2X7X_device_attr_group_tbl[ALSPRX2],
1710 .event_attrs = &tsl2X7X_event_attr_group_tbl[ALSPRX],
1711 .driver_module = THIS_MODULE,
1712 .read_raw = &tsl2x7x_read_raw,
1713 .write_raw = &tsl2x7x_write_raw,
1714 .read_event_value = &tsl2x7x_read_thresh,
1715 .write_event_value = &tsl2x7x_write_thresh,
1716 .read_event_config = &tsl2x7x_read_interrupt_config,
1717 .write_event_config = &tsl2x7x_write_interrupt_config,
1718 },
1719};
1720
1721static const struct iio_event_spec tsl2x7x_events[] = {
1722 {
1723 .type = IIO_EV_TYPE_THRESH,
1724 .dir = IIO_EV_DIR_RISING,
1725 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
1726 BIT(IIO_EV_INFO_ENABLE),
1727 }, {
1728 .type = IIO_EV_TYPE_THRESH,
1729 .dir = IIO_EV_DIR_FALLING,
1730 .mask_separate = BIT(IIO_EV_INFO_VALUE) |
1731 BIT(IIO_EV_INFO_ENABLE),
1732 },
1733};
1734
1735static const struct tsl2x7x_chip_info tsl2x7x_chip_info_tbl[] = {
1736 [ALS] = {
1737 .channel = {
1738 {
1739 .type = IIO_LIGHT,
1740 .indexed = 1,
1741 .channel = 0,
1742 .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
1743 }, {
1744 .type = IIO_INTENSITY,
1745 .indexed = 1,
1746 .channel = 0,
1747 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1748 BIT(IIO_CHAN_INFO_CALIBSCALE) |
1749 BIT(IIO_CHAN_INFO_CALIBBIAS),
1750 .event_spec = tsl2x7x_events,
1751 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1752 }, {
1753 .type = IIO_INTENSITY,
1754 .indexed = 1,
1755 .channel = 1,
1756 },
1757 },
1758 .chan_table_elements = 3,
1759 .info = &tsl2X7X_device_info[ALS],
1760 },
1761 [PRX] = {
1762 .channel = {
1763 {
1764 .type = IIO_PROXIMITY,
1765 .indexed = 1,
1766 .channel = 0,
1767 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
1768 .event_spec = tsl2x7x_events,
1769 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1770 },
1771 },
1772 .chan_table_elements = 1,
1773 .info = &tsl2X7X_device_info[PRX],
1774 },
1775 [ALSPRX] = {
1776 .channel = {
1777 {
1778 .type = IIO_LIGHT,
1779 .indexed = 1,
1780 .channel = 0,
1781 .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED)
1782 }, {
1783 .type = IIO_INTENSITY,
1784 .indexed = 1,
1785 .channel = 0,
1786 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1787 BIT(IIO_CHAN_INFO_CALIBSCALE) |
1788 BIT(IIO_CHAN_INFO_CALIBBIAS),
1789 .event_spec = tsl2x7x_events,
1790 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1791 }, {
1792 .type = IIO_INTENSITY,
1793 .indexed = 1,
1794 .channel = 1,
1795 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
1796 }, {
1797 .type = IIO_PROXIMITY,
1798 .indexed = 1,
1799 .channel = 0,
1800 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
1801 .event_spec = tsl2x7x_events,
1802 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1803 },
1804 },
1805 .chan_table_elements = 4,
1806 .info = &tsl2X7X_device_info[ALSPRX],
1807 },
1808 [PRX2] = {
1809 .channel = {
1810 {
1811 .type = IIO_PROXIMITY,
1812 .indexed = 1,
1813 .channel = 0,
1814 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1815 BIT(IIO_CHAN_INFO_CALIBSCALE),
1816 .event_spec = tsl2x7x_events,
1817 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1818 },
1819 },
1820 .chan_table_elements = 1,
1821 .info = &tsl2X7X_device_info[PRX2],
1822 },
1823 [ALSPRX2] = {
1824 .channel = {
1825 {
1826 .type = IIO_LIGHT,
1827 .indexed = 1,
1828 .channel = 0,
1829 .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED),
1830 }, {
1831 .type = IIO_INTENSITY,
1832 .indexed = 1,
1833 .channel = 0,
1834 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1835 BIT(IIO_CHAN_INFO_CALIBSCALE) |
1836 BIT(IIO_CHAN_INFO_CALIBBIAS),
1837 .event_spec = tsl2x7x_events,
1838 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1839 }, {
1840 .type = IIO_INTENSITY,
1841 .indexed = 1,
1842 .channel = 1,
1843 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
1844 }, {
1845 .type = IIO_PROXIMITY,
1846 .indexed = 1,
1847 .channel = 0,
1848 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1849 BIT(IIO_CHAN_INFO_CALIBSCALE),
1850 .event_spec = tsl2x7x_events,
1851 .num_event_specs = ARRAY_SIZE(tsl2x7x_events),
1852 },
1853 },
1854 .chan_table_elements = 4,
1855 .info = &tsl2X7X_device_info[ALSPRX2],
1856 },
1857};
1858
1859static int tsl2x7x_probe(struct i2c_client *clientp,
1860 const struct i2c_device_id *id)
1861{
1862 int ret;
1863 unsigned char device_id;
1864 struct iio_dev *indio_dev;
1865 struct tsl2X7X_chip *chip;
1866
1867 indio_dev = devm_iio_device_alloc(&clientp->dev, sizeof(*chip));
1868 if (!indio_dev)
1869 return -ENOMEM;
1870
1871 chip = iio_priv(indio_dev);
1872 chip->client = clientp;
1873 i2c_set_clientdata(clientp, indio_dev);
1874
1875 ret = tsl2x7x_i2c_read(chip->client,
1876 TSL2X7X_CHIPID, &device_id);
1877 if (ret < 0)
1878 return ret;
1879
1880 if ((!tsl2x7x_device_id(&device_id, id->driver_data)) ||
1881 (tsl2x7x_device_id(&device_id, id->driver_data) == -EINVAL)) {
1882 dev_info(&chip->client->dev,
1883 "%s: i2c device found does not match expected id\n",
1884 __func__);
1885 return -EINVAL;
1886 }
1887
1888 ret = i2c_smbus_write_byte(clientp, (TSL2X7X_CMD_REG | TSL2X7X_CNTRL));
1889 if (ret < 0) {
1890 dev_err(&clientp->dev, "write to cmd reg failed. err = %d\n",
1891 ret);
1892 return ret;
1893 }
1894
1895
1896
1897 mutex_init(&chip->als_mutex);
1898 mutex_init(&chip->prox_mutex);
1899
1900 chip->tsl2x7x_chip_status = TSL2X7X_CHIP_UNKNOWN;
1901 chip->pdata = dev_get_platdata(&clientp->dev);
1902 chip->id = id->driver_data;
1903 chip->chip_info =
1904 &tsl2x7x_chip_info_tbl[device_channel_config[id->driver_data]];
1905
1906 indio_dev->info = chip->chip_info->info;
1907 indio_dev->dev.parent = &clientp->dev;
1908 indio_dev->modes = INDIO_DIRECT_MODE;
1909 indio_dev->name = chip->client->name;
1910 indio_dev->channels = chip->chip_info->channel;
1911 indio_dev->num_channels = chip->chip_info->chan_table_elements;
1912
1913 if (clientp->irq) {
1914 ret = devm_request_threaded_irq(&clientp->dev, clientp->irq,
1915 NULL,
1916 &tsl2x7x_event_handler,
1917 IRQF_TRIGGER_RISING |
1918 IRQF_ONESHOT,
1919 "TSL2X7X_event",
1920 indio_dev);
1921 if (ret) {
1922 dev_err(&clientp->dev,
1923 "%s: irq request failed", __func__);
1924 return ret;
1925 }
1926 }
1927
1928
1929 tsl2x7x_defaults(chip);
1930
1931 tsl2x7x_chip_on(indio_dev);
1932
1933 ret = iio_device_register(indio_dev);
1934 if (ret) {
1935 dev_err(&clientp->dev,
1936 "%s: iio registration failed\n", __func__);
1937 return ret;
1938 }
1939
1940 dev_info(&clientp->dev, "%s Light sensor found.\n", id->name);
1941
1942 return 0;
1943}
1944
1945static int tsl2x7x_suspend(struct device *dev)
1946{
1947 struct iio_dev *indio_dev = dev_get_drvdata(dev);
1948 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1949 int ret = 0;
1950
1951 if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_WORKING) {
1952 ret = tsl2x7x_chip_off(indio_dev);
1953 chip->tsl2x7x_chip_status = TSL2X7X_CHIP_SUSPENDED;
1954 }
1955
1956 if (chip->pdata && chip->pdata->platform_power) {
1957 pm_message_t pmm = {PM_EVENT_SUSPEND};
1958
1959 chip->pdata->platform_power(dev, pmm);
1960 }
1961
1962 return ret;
1963}
1964
1965static int tsl2x7x_resume(struct device *dev)
1966{
1967 struct iio_dev *indio_dev = dev_get_drvdata(dev);
1968 struct tsl2X7X_chip *chip = iio_priv(indio_dev);
1969 int ret = 0;
1970
1971 if (chip->pdata && chip->pdata->platform_power) {
1972 pm_message_t pmm = {PM_EVENT_RESUME};
1973
1974 chip->pdata->platform_power(dev, pmm);
1975 }
1976
1977 if (chip->tsl2x7x_chip_status == TSL2X7X_CHIP_SUSPENDED)
1978 ret = tsl2x7x_chip_on(indio_dev);
1979
1980 return ret;
1981}
1982
1983static int tsl2x7x_remove(struct i2c_client *client)
1984{
1985 struct iio_dev *indio_dev = i2c_get_clientdata(client);
1986
1987 tsl2x7x_chip_off(indio_dev);
1988
1989 iio_device_unregister(indio_dev);
1990
1991 return 0;
1992}
1993
1994static struct i2c_device_id tsl2x7x_idtable[] = {
1995 { "tsl2571", tsl2571 },
1996 { "tsl2671", tsl2671 },
1997 { "tmd2671", tmd2671 },
1998 { "tsl2771", tsl2771 },
1999 { "tmd2771", tmd2771 },
2000 { "tsl2572", tsl2572 },
2001 { "tsl2672", tsl2672 },
2002 { "tmd2672", tmd2672 },
2003 { "tsl2772", tsl2772 },
2004 { "tmd2772", tmd2772 },
2005 {}
2006};
2007
2008MODULE_DEVICE_TABLE(i2c, tsl2x7x_idtable);
2009
2010static const struct dev_pm_ops tsl2x7x_pm_ops = {
2011 .suspend = tsl2x7x_suspend,
2012 .resume = tsl2x7x_resume,
2013};
2014
2015
2016static struct i2c_driver tsl2x7x_driver = {
2017 .driver = {
2018 .name = "tsl2x7x",
2019 .pm = &tsl2x7x_pm_ops,
2020 },
2021 .id_table = tsl2x7x_idtable,
2022 .probe = tsl2x7x_probe,
2023 .remove = tsl2x7x_remove,
2024};
2025
2026module_i2c_driver(tsl2x7x_driver);
2027
2028MODULE_AUTHOR("J. August Brenner<jbrenner@taosinc.com>");
2029MODULE_DESCRIPTION("TAOS tsl2x7x ambient and proximity light sensor driver");
2030MODULE_LICENSE("GPL");
2031
