1 // SPDX-License-Identifier: GPL-2.0-only
3 * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient
4 * light and proximity sensor
6 * Copyright 2012 Peter Meerwald <pmeerw@pmeerw.net>
7 * Copyright 2019 Pursim SPC
8 * Copyright 2020 Mathieu Othacehe <m.othacehe@gmail.com>
11 * VCNL4000/10/20 (7-bit I2C slave address 0x13)
12 * VCNL4040 (7-bit I2C slave address 0x60)
13 * VCNL4200 (7-bit I2C slave address 0x51)
16 * allow to adjust IR current
17 * interrupts (VCNL4040, VCNL4200)
20 #include <linux/bitfield.h>
21 #include <linux/module.h>
22 #include <linux/i2c.h>
23 #include <linux/err.h>
24 #include <linux/delay.h>
25 #include <linux/pm_runtime.h>
26 #include <linux/interrupt.h>
27 #include <linux/units.h>
29 #include <linux/iio/buffer.h>
30 #include <linux/iio/events.h>
31 #include <linux/iio/iio.h>
32 #include <linux/iio/sysfs.h>
33 #include <linux/iio/trigger.h>
34 #include <linux/iio/trigger_consumer.h>
35 #include <linux/iio/triggered_buffer.h>
37 #define VCNL4000_DRV_NAME "vcnl4000"
38 #define VCNL4000_PROD_ID 0x01
39 #define VCNL4010_PROD_ID 0x02 /* for VCNL4020, VCNL4010 */
40 #define VCNL4040_PROD_ID 0x86
41 #define VCNL4200_PROD_ID 0x58
43 #define VCNL4000_COMMAND 0x80 /* Command register */
44 #define VCNL4000_PROD_REV 0x81 /* Product ID and Revision ID */
45 #define VCNL4010_PROX_RATE 0x82 /* Proximity rate */
46 #define VCNL4000_LED_CURRENT 0x83 /* IR LED current for proximity mode */
47 #define VCNL4000_AL_PARAM 0x84 /* Ambient light parameter register */
48 #define VCNL4010_ALS_PARAM 0x84 /* ALS rate */
49 #define VCNL4000_AL_RESULT_HI 0x85 /* Ambient light result register, MSB */
50 #define VCNL4000_AL_RESULT_LO 0x86 /* Ambient light result register, LSB */
51 #define VCNL4000_PS_RESULT_HI 0x87 /* Proximity result register, MSB */
52 #define VCNL4000_PS_RESULT_LO 0x88 /* Proximity result register, LSB */
53 #define VCNL4000_PS_MEAS_FREQ 0x89 /* Proximity test signal frequency */
54 #define VCNL4010_INT_CTRL 0x89 /* Interrupt control */
55 #define VCNL4000_PS_MOD_ADJ 0x8a /* Proximity modulator timing adjustment */
56 #define VCNL4010_LOW_THR_HI 0x8a /* Low threshold, MSB */
57 #define VCNL4010_LOW_THR_LO 0x8b /* Low threshold, LSB */
58 #define VCNL4010_HIGH_THR_HI 0x8c /* High threshold, MSB */
59 #define VCNL4010_HIGH_THR_LO 0x8d /* High threshold, LSB */
60 #define VCNL4010_ISR 0x8e /* Interrupt status */
62 #define VCNL4200_AL_CONF 0x00 /* Ambient light configuration */
63 #define VCNL4200_PS_CONF1 0x03 /* Proximity configuration */
64 #define VCNL4200_PS_CONF3 0x04 /* Proximity configuration */
65 #define VCNL4040_PS_THDL_LM 0x06 /* Proximity threshold low */
66 #define VCNL4040_PS_THDH_LM 0x07 /* Proximity threshold high */
67 #define VCNL4040_ALS_THDL_LM 0x02 /* Ambient light threshold low */
68 #define VCNL4040_ALS_THDH_LM 0x01 /* Ambient light threshold high */
69 #define VCNL4200_PS_DATA 0x08 /* Proximity data */
70 #define VCNL4200_AL_DATA 0x09 /* Ambient light data */
71 #define VCNL4040_INT_FLAGS 0x0b /* Interrupt register */
72 #define VCNL4200_INT_FLAGS 0x0d /* Interrupt register */
73 #define VCNL4200_DEV_ID 0x0e /* Device ID, slave address and version */
75 #define VCNL4040_DEV_ID 0x0c /* Device ID and version */
77 /* Bit masks for COMMAND register */
78 #define VCNL4000_AL_RDY BIT(6) /* ALS data ready? */
79 #define VCNL4000_PS_RDY BIT(5) /* proximity data ready? */
80 #define VCNL4000_AL_OD BIT(4) /* start on-demand ALS measurement */
81 #define VCNL4000_PS_OD BIT(3) /* start on-demand proximity measurement */
82 #define VCNL4000_ALS_EN BIT(2) /* start ALS measurement */
83 #define VCNL4000_PROX_EN BIT(1) /* start proximity measurement */
84 #define VCNL4000_SELF_TIMED_EN BIT(0) /* start self-timed measurement */
86 #define VCNL4040_ALS_CONF_ALS_SHUTDOWN BIT(0)
87 #define VCNL4040_ALS_CONF_IT GENMASK(7, 6) /* Ambient integration time */
88 #define VCNL4040_ALS_CONF_INT_EN BIT(1) /* Ambient light Interrupt enable */
89 #define VCNL4040_ALS_CONF_PERS GENMASK(3, 2) /* Ambient interrupt persistence setting */
90 #define VCNL4040_PS_CONF1_PS_SHUTDOWN BIT(0)
91 #define VCNL4040_PS_CONF2_PS_IT GENMASK(3, 1) /* Proximity integration time */
92 #define VCNL4040_CONF1_PS_PERS GENMASK(5, 4) /* Proximity interrupt persistence setting */
93 #define VCNL4040_PS_CONF2_PS_INT GENMASK(9, 8) /* Proximity interrupt mode */
94 #define VCNL4040_PS_CONF3_MPS GENMASK(6, 5) /* Proximity multi pulse number */
95 #define VCNL4040_PS_MS_LED_I GENMASK(10, 8) /* Proximity current */
96 #define VCNL4040_PS_IF_AWAY BIT(8) /* Proximity event cross low threshold */
97 #define VCNL4040_PS_IF_CLOSE BIT(9) /* Proximity event cross high threshold */
98 #define VCNL4040_ALS_RISING BIT(12) /* Ambient Light cross high threshold */
99 #define VCNL4040_ALS_FALLING BIT(13) /* Ambient Light cross low threshold */
101 /* Bit masks for interrupt registers. */
102 #define VCNL4010_INT_THR_SEL BIT(0) /* Select threshold interrupt source */
103 #define VCNL4010_INT_THR_EN BIT(1) /* Threshold interrupt type */
104 #define VCNL4010_INT_ALS_EN BIT(2) /* Enable on ALS data ready */
105 #define VCNL4010_INT_PROX_EN BIT(3) /* Enable on proximity data ready */
107 #define VCNL4010_INT_THR_HIGH 0 /* High threshold exceeded */
108 #define VCNL4010_INT_THR_LOW 1 /* Low threshold exceeded */
109 #define VCNL4010_INT_ALS 2 /* ALS data ready */
110 #define VCNL4010_INT_PROXIMITY 3 /* Proximity data ready */
112 #define VCNL4010_INT_THR \
113 (BIT(VCNL4010_INT_THR_LOW) | BIT(VCNL4010_INT_THR_HIGH))
114 #define VCNL4010_INT_DRDY \
115 (BIT(VCNL4010_INT_PROXIMITY) | BIT(VCNL4010_INT_ALS))
117 static const int vcnl4010_prox_sampling_frequency[][2] = {
128 static const int vcnl4040_ps_it_times[][2] = {
139 static const int vcnl4200_ps_it_times[][2] = {
148 static const int vcnl4040_als_it_times[][2] = {
155 static const int vcnl4200_als_it_times[][2] = {
162 static const int vcnl4040_ps_calibbias_ua[][2] = {
173 static const int vcnl4040_als_persistence[] = {1, 2, 4, 8};
174 static const int vcnl4040_ps_persistence[] = {1, 2, 3, 4};
175 static const int vcnl4040_ps_oversampling_ratio[] = {1, 2, 4, 8};
177 #define VCNL4000_SLEEP_DELAY_MS 2000 /* before we enter pm_runtime_suspend */
179 enum vcnl4000_device_ids {
186 struct vcnl4200_channel {
188 ktime_t last_measurement;
189 ktime_t sampling_rate;
193 struct vcnl4000_data {
194 struct i2c_client *client;
195 enum vcnl4000_device_ids id;
198 u8 ps_int; /* proximity interrupt mode */
199 u8 als_int; /* ambient light interrupt mode*/
200 const struct vcnl4000_chip_spec *chip_spec;
201 struct mutex vcnl4000_lock;
202 struct vcnl4200_channel vcnl4200_al;
203 struct vcnl4200_channel vcnl4200_ps;
207 struct vcnl4000_chip_spec {
209 struct iio_chan_spec const *channels;
210 const int num_channels;
211 const struct iio_info *info;
212 const struct iio_buffer_setup_ops *buffer_setup_ops;
213 int (*init)(struct vcnl4000_data *data);
214 int (*measure_light)(struct vcnl4000_data *data, int *val);
215 int (*measure_proximity)(struct vcnl4000_data *data, int *val);
216 int (*set_power_state)(struct vcnl4000_data *data, bool on);
217 irqreturn_t (*irq_thread)(int irq, void *priv);
218 irqreturn_t (*trig_buffer_func)(int irq, void *priv);
221 const int(*ps_it_times)[][2];
222 const int num_ps_it_times;
223 const int(*als_it_times)[][2];
224 const int num_als_it_times;
225 const unsigned int ulux_step;
228 static const struct i2c_device_id vcnl4000_id[] = {
229 { "vcnl4000", VCNL4000 },
230 { "vcnl4010", VCNL4010 },
231 { "vcnl4020", VCNL4010 },
232 { "vcnl4040", VCNL4040 },
233 { "vcnl4200", VCNL4200 },
236 MODULE_DEVICE_TABLE(i2c, vcnl4000_id);
238 static int vcnl4000_set_power_state(struct vcnl4000_data *data, bool on)
244 static int vcnl4000_init(struct vcnl4000_data *data)
248 ret = i2c_smbus_read_byte_data(data->client, VCNL4000_PROD_REV);
254 case VCNL4000_PROD_ID:
255 if (data->id != VCNL4000)
256 dev_warn(&data->client->dev,
257 "wrong device id, use vcnl4000");
259 case VCNL4010_PROD_ID:
260 if (data->id != VCNL4010)
261 dev_warn(&data->client->dev,
262 "wrong device id, use vcnl4010/4020");
268 data->rev = ret & 0xf;
269 data->al_scale = 250000;
271 return data->chip_spec->set_power_state(data, true);
274 static ssize_t vcnl4000_write_als_enable(struct vcnl4000_data *data, bool en)
278 mutex_lock(&data->vcnl4000_lock);
280 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
285 ret &= ~VCNL4040_ALS_CONF_ALS_SHUTDOWN;
287 ret |= VCNL4040_ALS_CONF_ALS_SHUTDOWN;
289 ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF, ret);
292 mutex_unlock(&data->vcnl4000_lock);
297 static ssize_t vcnl4000_write_ps_enable(struct vcnl4000_data *data, bool en)
301 mutex_lock(&data->vcnl4000_lock);
303 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
308 ret &= ~VCNL4040_PS_CONF1_PS_SHUTDOWN;
310 ret |= VCNL4040_PS_CONF1_PS_SHUTDOWN;
312 ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, ret);
315 mutex_unlock(&data->vcnl4000_lock);
320 static int vcnl4200_set_power_state(struct vcnl4000_data *data, bool on)
324 /* Do not power down if interrupts are enabled */
325 if (!on && (data->ps_int || data->als_int))
328 ret = vcnl4000_write_als_enable(data, on);
332 ret = vcnl4000_write_ps_enable(data, on);
337 /* Wait at least one integration cycle before fetching data */
338 data->vcnl4200_al.last_measurement = ktime_get();
339 data->vcnl4200_ps.last_measurement = ktime_get();
345 static int vcnl4200_init(struct vcnl4000_data *data)
349 ret = i2c_smbus_read_word_data(data->client, VCNL4200_DEV_ID);
355 if (id != VCNL4200_PROD_ID) {
356 ret = i2c_smbus_read_word_data(data->client, VCNL4040_DEV_ID);
362 if (id != VCNL4040_PROD_ID)
366 dev_dbg(&data->client->dev, "device id 0x%x", id);
368 data->rev = (ret >> 8) & 0xf;
372 data->vcnl4200_al.reg = VCNL4200_AL_DATA;
373 data->vcnl4200_ps.reg = VCNL4200_PS_DATA;
375 case VCNL4200_PROD_ID:
376 /* Default wait time is 50ms, add 20% tolerance. */
377 data->vcnl4200_al.sampling_rate = ktime_set(0, 60000 * 1000);
378 /* Default wait time is 4.8ms, add 20% tolerance. */
379 data->vcnl4200_ps.sampling_rate = ktime_set(0, 5760 * 1000);
381 case VCNL4040_PROD_ID:
382 /* Default wait time is 80ms, add 20% tolerance. */
383 data->vcnl4200_al.sampling_rate = ktime_set(0, 96000 * 1000);
384 /* Default wait time is 5ms, add 20% tolerance. */
385 data->vcnl4200_ps.sampling_rate = ktime_set(0, 6000 * 1000);
388 data->al_scale = data->chip_spec->ulux_step;
389 mutex_init(&data->vcnl4200_al.lock);
390 mutex_init(&data->vcnl4200_ps.lock);
392 ret = data->chip_spec->set_power_state(data, true);
399 static int vcnl4000_read_data(struct vcnl4000_data *data, u8 data_reg, int *val)
403 ret = i2c_smbus_read_word_swapped(data->client, data_reg);
411 static int vcnl4000_write_data(struct vcnl4000_data *data, u8 data_reg, int val)
416 return i2c_smbus_write_word_swapped(data->client, data_reg, val);
420 static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask,
421 u8 rdy_mask, u8 data_reg, int *val)
426 mutex_lock(&data->vcnl4000_lock);
428 ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
433 /* wait for data to become ready */
435 ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND);
440 msleep(20); /* measurement takes up to 100 ms */
444 dev_err(&data->client->dev,
445 "vcnl4000_measure() failed, data not ready\n");
450 ret = vcnl4000_read_data(data, data_reg, val);
454 mutex_unlock(&data->vcnl4000_lock);
459 mutex_unlock(&data->vcnl4000_lock);
463 static int vcnl4200_measure(struct vcnl4000_data *data,
464 struct vcnl4200_channel *chan, int *val)
468 ktime_t next_measurement;
470 mutex_lock(&chan->lock);
472 next_measurement = ktime_add(chan->last_measurement,
473 chan->sampling_rate);
474 delta = ktime_us_delta(next_measurement, ktime_get());
476 usleep_range(delta, delta + 500);
477 chan->last_measurement = ktime_get();
479 mutex_unlock(&chan->lock);
481 ret = i2c_smbus_read_word_data(data->client, chan->reg);
490 static int vcnl4000_measure_light(struct vcnl4000_data *data, int *val)
492 return vcnl4000_measure(data,
493 VCNL4000_AL_OD, VCNL4000_AL_RDY,
494 VCNL4000_AL_RESULT_HI, val);
497 static int vcnl4200_measure_light(struct vcnl4000_data *data, int *val)
499 return vcnl4200_measure(data, &data->vcnl4200_al, val);
502 static int vcnl4000_measure_proximity(struct vcnl4000_data *data, int *val)
504 return vcnl4000_measure(data,
505 VCNL4000_PS_OD, VCNL4000_PS_RDY,
506 VCNL4000_PS_RESULT_HI, val);
509 static int vcnl4200_measure_proximity(struct vcnl4000_data *data, int *val)
511 return vcnl4200_measure(data, &data->vcnl4200_ps, val);
514 static int vcnl4010_read_proxy_samp_freq(struct vcnl4000_data *data, int *val,
519 ret = i2c_smbus_read_byte_data(data->client, VCNL4010_PROX_RATE);
523 if (ret >= ARRAY_SIZE(vcnl4010_prox_sampling_frequency))
526 *val = vcnl4010_prox_sampling_frequency[ret][0];
527 *val2 = vcnl4010_prox_sampling_frequency[ret][1];
532 static bool vcnl4010_is_in_periodic_mode(struct vcnl4000_data *data)
536 ret = i2c_smbus_read_byte_data(data->client, VCNL4000_COMMAND);
540 return !!(ret & VCNL4000_SELF_TIMED_EN);
543 static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on)
545 struct device *dev = &data->client->dev;
549 ret = pm_runtime_resume_and_get(dev);
551 pm_runtime_mark_last_busy(dev);
552 ret = pm_runtime_put_autosuspend(dev);
558 static int vcnl4040_read_als_it(struct vcnl4000_data *data, int *val, int *val2)
562 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
566 ret = FIELD_GET(VCNL4040_ALS_CONF_IT, ret);
567 if (ret >= data->chip_spec->num_als_it_times)
570 *val = (*data->chip_spec->als_it_times)[ret][0];
571 *val2 = (*data->chip_spec->als_it_times)[ret][1];
576 static ssize_t vcnl4040_write_als_it(struct vcnl4000_data *data, int val)
582 for (i = 0; i < data->chip_spec->num_als_it_times; i++) {
583 if (val == (*data->chip_spec->als_it_times)[i][1])
587 if (i == data->chip_spec->num_als_it_times)
590 data->vcnl4200_al.sampling_rate = ktime_set(0, val * 1200);
591 data->al_scale = div_u64(mul_u32_u32(data->chip_spec->ulux_step,
592 (*data->chip_spec->als_it_times)[0][1]),
595 mutex_lock(&data->vcnl4000_lock);
597 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
601 regval = FIELD_PREP(VCNL4040_ALS_CONF_IT, i);
602 regval |= (ret & ~VCNL4040_ALS_CONF_IT);
603 ret = i2c_smbus_write_word_data(data->client,
608 mutex_unlock(&data->vcnl4000_lock);
612 static int vcnl4040_read_ps_it(struct vcnl4000_data *data, int *val, int *val2)
616 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
620 ret = FIELD_GET(VCNL4040_PS_CONF2_PS_IT, ret);
622 if (ret >= data->chip_spec->num_ps_it_times)
625 *val = (*data->chip_spec->ps_it_times)[ret][0];
626 *val2 = (*data->chip_spec->ps_it_times)[ret][1];
631 static ssize_t vcnl4040_write_ps_it(struct vcnl4000_data *data, int val)
637 for (i = 0; i < data->chip_spec->num_ps_it_times; i++) {
638 if (val == (*data->chip_spec->ps_it_times)[i][1]) {
647 data->vcnl4200_ps.sampling_rate = ktime_set(0, val * 60 * NSEC_PER_USEC);
649 mutex_lock(&data->vcnl4000_lock);
651 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
655 regval = (ret & ~VCNL4040_PS_CONF2_PS_IT) |
656 FIELD_PREP(VCNL4040_PS_CONF2_PS_IT, index);
657 ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1,
661 mutex_unlock(&data->vcnl4000_lock);
665 static ssize_t vcnl4040_read_als_period(struct vcnl4000_data *data, int *val, int *val2)
667 int ret, ret_pers, it;
670 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
674 ret_pers = FIELD_GET(VCNL4040_ALS_CONF_PERS, ret);
675 if (ret_pers >= ARRAY_SIZE(vcnl4040_als_persistence))
678 it = FIELD_GET(VCNL4040_ALS_CONF_IT, ret);
679 if (it >= data->chip_spec->num_als_it_times)
682 val_c = mul_u32_u32((*data->chip_spec->als_it_times)[it][1],
683 vcnl4040_als_persistence[ret_pers]);
684 *val = div_u64_rem(val_c, MICRO, val2);
686 return IIO_VAL_INT_PLUS_MICRO;
689 static ssize_t vcnl4040_write_als_period(struct vcnl4000_data *data, int val, int val2)
694 u64 val_n = mul_u32_u32(val, MICRO) + val2;
696 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
700 it = FIELD_GET(VCNL4040_ALS_CONF_IT, ret);
701 if (it >= data->chip_spec->num_als_it_times)
704 for (i = 0; i < ARRAY_SIZE(vcnl4040_als_persistence) - 1; i++) {
705 if (val_n < mul_u32_u32(vcnl4040_als_persistence[i],
706 (*data->chip_spec->als_it_times)[it][1]))
710 mutex_lock(&data->vcnl4000_lock);
712 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
716 regval = FIELD_PREP(VCNL4040_ALS_CONF_PERS, i);
717 regval |= (ret & ~VCNL4040_ALS_CONF_PERS);
718 ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF,
722 mutex_unlock(&data->vcnl4000_lock);
726 static ssize_t vcnl4040_read_ps_period(struct vcnl4000_data *data, int *val, int *val2)
728 int ret, ret_pers, it;
730 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
734 ret_pers = FIELD_GET(VCNL4040_CONF1_PS_PERS, ret);
735 if (ret_pers >= ARRAY_SIZE(vcnl4040_ps_persistence))
738 it = FIELD_GET(VCNL4040_PS_CONF2_PS_IT, ret);
739 if (it >= data->chip_spec->num_ps_it_times)
742 *val = (*data->chip_spec->ps_it_times)[it][0];
743 *val2 = (*data->chip_spec->ps_it_times)[it][1] *
744 vcnl4040_ps_persistence[ret_pers];
746 return IIO_VAL_INT_PLUS_MICRO;
749 static ssize_t vcnl4040_write_ps_period(struct vcnl4000_data *data, int val, int val2)
754 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
758 it = FIELD_GET(VCNL4040_PS_CONF2_PS_IT, ret);
759 if (it >= data->chip_spec->num_ps_it_times)
763 i = ARRAY_SIZE(vcnl4040_ps_persistence) - 1;
765 for (i = 0; i < ARRAY_SIZE(vcnl4040_ps_persistence) - 1; i++) {
766 if (val2 <= vcnl4040_ps_persistence[i] *
767 (*data->chip_spec->ps_it_times)[it][1])
772 mutex_lock(&data->vcnl4000_lock);
774 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
778 regval = FIELD_PREP(VCNL4040_CONF1_PS_PERS, i);
779 regval |= (ret & ~VCNL4040_CONF1_PS_PERS);
780 ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1,
784 mutex_unlock(&data->vcnl4000_lock);
788 static ssize_t vcnl4040_read_ps_oversampling_ratio(struct vcnl4000_data *data, int *val)
792 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3);
796 ret = FIELD_GET(VCNL4040_PS_CONF3_MPS, ret);
797 if (ret >= ARRAY_SIZE(vcnl4040_ps_oversampling_ratio))
800 *val = vcnl4040_ps_oversampling_ratio[ret];
805 static ssize_t vcnl4040_write_ps_oversampling_ratio(struct vcnl4000_data *data, int val)
811 for (i = 0; i < ARRAY_SIZE(vcnl4040_ps_oversampling_ratio); i++) {
812 if (val == vcnl4040_ps_oversampling_ratio[i])
816 if (i >= ARRAY_SIZE(vcnl4040_ps_oversampling_ratio))
819 mutex_lock(&data->vcnl4000_lock);
821 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3);
825 regval = FIELD_PREP(VCNL4040_PS_CONF3_MPS, i);
826 regval |= (ret & ~VCNL4040_PS_CONF3_MPS);
827 ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF3,
831 mutex_unlock(&data->vcnl4000_lock);
835 static ssize_t vcnl4040_read_ps_calibbias(struct vcnl4000_data *data, int *val, int *val2)
839 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3);
843 ret = FIELD_GET(VCNL4040_PS_MS_LED_I, ret);
844 if (ret >= ARRAY_SIZE(vcnl4040_ps_calibbias_ua))
847 *val = vcnl4040_ps_calibbias_ua[ret][0];
848 *val2 = vcnl4040_ps_calibbias_ua[ret][1];
853 static ssize_t vcnl4040_write_ps_calibbias(struct vcnl4000_data *data, int val)
859 for (i = 0; i < ARRAY_SIZE(vcnl4040_ps_calibbias_ua); i++) {
860 if (val == vcnl4040_ps_calibbias_ua[i][1])
864 if (i >= ARRAY_SIZE(vcnl4040_ps_calibbias_ua))
867 mutex_lock(&data->vcnl4000_lock);
869 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3);
873 regval = (ret & ~VCNL4040_PS_MS_LED_I);
874 regval |= FIELD_PREP(VCNL4040_PS_MS_LED_I, i);
875 ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF3,
879 mutex_unlock(&data->vcnl4000_lock);
883 static int vcnl4000_read_raw(struct iio_dev *indio_dev,
884 struct iio_chan_spec const *chan,
885 int *val, int *val2, long mask)
888 struct vcnl4000_data *data = iio_priv(indio_dev);
891 case IIO_CHAN_INFO_RAW:
892 ret = vcnl4000_set_pm_runtime_state(data, true);
896 switch (chan->type) {
898 ret = data->chip_spec->measure_light(data, val);
903 ret = data->chip_spec->measure_proximity(data, val);
910 vcnl4000_set_pm_runtime_state(data, false);
912 case IIO_CHAN_INFO_SCALE:
913 if (chan->type != IIO_LIGHT)
917 *val2 = data->al_scale;
918 return IIO_VAL_INT_PLUS_MICRO;
919 case IIO_CHAN_INFO_INT_TIME:
920 switch (chan->type) {
922 ret = vcnl4040_read_als_it(data, val, val2);
925 ret = vcnl4040_read_ps_it(data, val, val2);
932 return IIO_VAL_INT_PLUS_MICRO;
933 case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
934 switch (chan->type) {
936 ret = vcnl4040_read_ps_oversampling_ratio(data, val);
943 case IIO_CHAN_INFO_CALIBBIAS:
944 switch (chan->type) {
946 ret = vcnl4040_read_ps_calibbias(data, val, val2);
949 return IIO_VAL_INT_PLUS_MICRO;
958 static int vcnl4040_write_raw(struct iio_dev *indio_dev,
959 struct iio_chan_spec const *chan,
960 int val, int val2, long mask)
962 struct vcnl4000_data *data = iio_priv(indio_dev);
965 case IIO_CHAN_INFO_INT_TIME:
968 switch (chan->type) {
970 return vcnl4040_write_als_it(data, val2);
972 return vcnl4040_write_ps_it(data, val2);
976 case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
977 switch (chan->type) {
979 return vcnl4040_write_ps_oversampling_ratio(data, val);
983 case IIO_CHAN_INFO_CALIBBIAS:
984 switch (chan->type) {
986 return vcnl4040_write_ps_calibbias(data, val2);
995 static int vcnl4040_read_avail(struct iio_dev *indio_dev,
996 struct iio_chan_spec const *chan,
997 const int **vals, int *type, int *length,
1000 struct vcnl4000_data *data = iio_priv(indio_dev);
1003 case IIO_CHAN_INFO_INT_TIME:
1004 switch (chan->type) {
1006 *vals = (int *)(*data->chip_spec->als_it_times);
1007 *length = 2 * data->chip_spec->num_als_it_times;
1010 *vals = (int *)(*data->chip_spec->ps_it_times);
1011 *length = 2 * data->chip_spec->num_ps_it_times;
1016 *type = IIO_VAL_INT_PLUS_MICRO;
1017 return IIO_AVAIL_LIST;
1018 case IIO_CHAN_INFO_OVERSAMPLING_RATIO:
1019 switch (chan->type) {
1021 *vals = (int *)vcnl4040_ps_oversampling_ratio;
1022 *length = ARRAY_SIZE(vcnl4040_ps_oversampling_ratio);
1023 *type = IIO_VAL_INT;
1024 return IIO_AVAIL_LIST;
1028 case IIO_CHAN_INFO_CALIBBIAS:
1029 switch (chan->type) {
1031 *vals = (int *)vcnl4040_ps_calibbias_ua;
1032 *length = 2 * ARRAY_SIZE(vcnl4040_ps_calibbias_ua);
1033 *type = IIO_VAL_INT_PLUS_MICRO;
1034 return IIO_AVAIL_LIST;
1043 static int vcnl4010_read_raw(struct iio_dev *indio_dev,
1044 struct iio_chan_spec const *chan,
1045 int *val, int *val2, long mask)
1048 struct vcnl4000_data *data = iio_priv(indio_dev);
1051 case IIO_CHAN_INFO_RAW:
1052 case IIO_CHAN_INFO_SCALE:
1053 ret = iio_device_claim_direct_mode(indio_dev);
1057 /* Protect against event capture. */
1058 if (vcnl4010_is_in_periodic_mode(data)) {
1061 ret = vcnl4000_read_raw(indio_dev, chan, val, val2,
1065 iio_device_release_direct_mode(indio_dev);
1067 case IIO_CHAN_INFO_SAMP_FREQ:
1068 switch (chan->type) {
1070 ret = vcnl4010_read_proxy_samp_freq(data, val, val2);
1073 return IIO_VAL_INT_PLUS_MICRO;
1082 static int vcnl4010_read_avail(struct iio_dev *indio_dev,
1083 struct iio_chan_spec const *chan,
1084 const int **vals, int *type, int *length,
1088 case IIO_CHAN_INFO_SAMP_FREQ:
1089 *vals = (int *)vcnl4010_prox_sampling_frequency;
1090 *type = IIO_VAL_INT_PLUS_MICRO;
1091 *length = 2 * ARRAY_SIZE(vcnl4010_prox_sampling_frequency);
1092 return IIO_AVAIL_LIST;
1098 static int vcnl4010_write_proxy_samp_freq(struct vcnl4000_data *data, int val,
1104 for (i = 0; i < ARRAY_SIZE(vcnl4010_prox_sampling_frequency); i++) {
1105 if (val == vcnl4010_prox_sampling_frequency[i][0] &&
1106 val2 == vcnl4010_prox_sampling_frequency[i][1]) {
1115 return i2c_smbus_write_byte_data(data->client, VCNL4010_PROX_RATE,
1119 static int vcnl4010_write_raw(struct iio_dev *indio_dev,
1120 struct iio_chan_spec const *chan,
1121 int val, int val2, long mask)
1124 struct vcnl4000_data *data = iio_priv(indio_dev);
1126 ret = iio_device_claim_direct_mode(indio_dev);
1130 /* Protect against event capture. */
1131 if (vcnl4010_is_in_periodic_mode(data)) {
1137 case IIO_CHAN_INFO_SAMP_FREQ:
1138 switch (chan->type) {
1140 ret = vcnl4010_write_proxy_samp_freq(data, val, val2);
1152 iio_device_release_direct_mode(indio_dev);
1156 static int vcnl4010_read_event(struct iio_dev *indio_dev,
1157 const struct iio_chan_spec *chan,
1158 enum iio_event_type type,
1159 enum iio_event_direction dir,
1160 enum iio_event_info info,
1161 int *val, int *val2)
1164 struct vcnl4000_data *data = iio_priv(indio_dev);
1167 case IIO_EV_INFO_VALUE:
1169 case IIO_EV_DIR_RISING:
1170 ret = vcnl4000_read_data(data, VCNL4010_HIGH_THR_HI,
1175 case IIO_EV_DIR_FALLING:
1176 ret = vcnl4000_read_data(data, VCNL4010_LOW_THR_HI,
1189 static int vcnl4010_write_event(struct iio_dev *indio_dev,
1190 const struct iio_chan_spec *chan,
1191 enum iio_event_type type,
1192 enum iio_event_direction dir,
1193 enum iio_event_info info,
1197 struct vcnl4000_data *data = iio_priv(indio_dev);
1200 case IIO_EV_INFO_VALUE:
1202 case IIO_EV_DIR_RISING:
1203 ret = vcnl4000_write_data(data, VCNL4010_HIGH_THR_HI,
1208 case IIO_EV_DIR_FALLING:
1209 ret = vcnl4000_write_data(data, VCNL4010_LOW_THR_HI,
1222 static int vcnl4040_read_event(struct iio_dev *indio_dev,
1223 const struct iio_chan_spec *chan,
1224 enum iio_event_type type,
1225 enum iio_event_direction dir,
1226 enum iio_event_info info,
1227 int *val, int *val2)
1230 struct vcnl4000_data *data = iio_priv(indio_dev);
1232 switch (chan->type) {
1235 case IIO_EV_INFO_PERIOD:
1236 return vcnl4040_read_als_period(data, val, val2);
1237 case IIO_EV_INFO_VALUE:
1239 case IIO_EV_DIR_RISING:
1240 ret = i2c_smbus_read_word_data(data->client,
1241 VCNL4040_ALS_THDH_LM);
1243 case IIO_EV_DIR_FALLING:
1244 ret = i2c_smbus_read_word_data(data->client,
1245 VCNL4040_ALS_THDL_LM);
1257 case IIO_EV_INFO_PERIOD:
1258 return vcnl4040_read_ps_period(data, val, val2);
1259 case IIO_EV_INFO_VALUE:
1261 case IIO_EV_DIR_RISING:
1262 ret = i2c_smbus_read_word_data(data->client,
1263 VCNL4040_PS_THDH_LM);
1265 case IIO_EV_DIR_FALLING:
1266 ret = i2c_smbus_read_word_data(data->client,
1267 VCNL4040_PS_THDL_LM);
1286 static int vcnl4040_write_event(struct iio_dev *indio_dev,
1287 const struct iio_chan_spec *chan,
1288 enum iio_event_type type,
1289 enum iio_event_direction dir,
1290 enum iio_event_info info,
1294 struct vcnl4000_data *data = iio_priv(indio_dev);
1296 switch (chan->type) {
1299 case IIO_EV_INFO_PERIOD:
1300 return vcnl4040_write_als_period(data, val, val2);
1301 case IIO_EV_INFO_VALUE:
1303 case IIO_EV_DIR_RISING:
1304 ret = i2c_smbus_write_word_data(data->client,
1305 VCNL4040_ALS_THDH_LM,
1308 case IIO_EV_DIR_FALLING:
1309 ret = i2c_smbus_write_word_data(data->client,
1310 VCNL4040_ALS_THDL_LM,
1323 case IIO_EV_INFO_PERIOD:
1324 return vcnl4040_write_ps_period(data, val, val2);
1325 case IIO_EV_INFO_VALUE:
1327 case IIO_EV_DIR_RISING:
1328 ret = i2c_smbus_write_word_data(data->client,
1329 VCNL4040_PS_THDH_LM,
1332 case IIO_EV_DIR_FALLING:
1333 ret = i2c_smbus_write_word_data(data->client,
1334 VCNL4040_PS_THDL_LM,
1353 static bool vcnl4010_is_thr_enabled(struct vcnl4000_data *data)
1357 ret = i2c_smbus_read_byte_data(data->client, VCNL4010_INT_CTRL);
1361 return !!(ret & VCNL4010_INT_THR_EN);
1364 static int vcnl4010_read_event_config(struct iio_dev *indio_dev,
1365 const struct iio_chan_spec *chan,
1366 enum iio_event_type type,
1367 enum iio_event_direction dir)
1369 struct vcnl4000_data *data = iio_priv(indio_dev);
1371 switch (chan->type) {
1373 return vcnl4010_is_thr_enabled(data);
1379 static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state)
1381 struct vcnl4000_data *data = iio_priv(indio_dev);
1387 ret = iio_device_claim_direct_mode(indio_dev);
1391 /* Enable periodic measurement of proximity data. */
1392 command = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
1395 * Enable interrupts on threshold, for proximity data by
1398 icr = VCNL4010_INT_THR_EN;
1400 if (!vcnl4010_is_thr_enabled(data))
1407 ret = i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND,
1412 ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, icr);
1416 iio_device_release_direct_mode(indio_dev);
1421 static int vcnl4010_write_event_config(struct iio_dev *indio_dev,
1422 const struct iio_chan_spec *chan,
1423 enum iio_event_type type,
1424 enum iio_event_direction dir,
1427 switch (chan->type) {
1429 return vcnl4010_config_threshold(indio_dev, state);
1435 static int vcnl4040_read_event_config(struct iio_dev *indio_dev,
1436 const struct iio_chan_spec *chan,
1437 enum iio_event_type type,
1438 enum iio_event_direction dir)
1441 struct vcnl4000_data *data = iio_priv(indio_dev);
1443 switch (chan->type) {
1445 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
1449 data->als_int = FIELD_GET(VCNL4040_ALS_CONF_INT_EN, ret);
1451 return data->als_int;
1453 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
1457 data->ps_int = FIELD_GET(VCNL4040_PS_CONF2_PS_INT, ret);
1459 return (dir == IIO_EV_DIR_RISING) ?
1460 FIELD_GET(VCNL4040_PS_IF_AWAY, ret) :
1461 FIELD_GET(VCNL4040_PS_IF_CLOSE, ret);
1467 static int vcnl4040_write_event_config(struct iio_dev *indio_dev,
1468 const struct iio_chan_spec *chan,
1469 enum iio_event_type type,
1470 enum iio_event_direction dir, int state)
1474 struct vcnl4000_data *data = iio_priv(indio_dev);
1476 mutex_lock(&data->vcnl4000_lock);
1478 switch (chan->type) {
1480 ret = i2c_smbus_read_word_data(data->client, VCNL4200_AL_CONF);
1484 mask = VCNL4040_ALS_CONF_INT_EN;
1488 val = (ret & ~mask);
1490 data->als_int = FIELD_GET(VCNL4040_ALS_CONF_INT_EN, val);
1491 ret = i2c_smbus_write_word_data(data->client, VCNL4200_AL_CONF,
1495 ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1);
1499 if (dir == IIO_EV_DIR_RISING)
1500 mask = VCNL4040_PS_IF_AWAY;
1502 mask = VCNL4040_PS_IF_CLOSE;
1504 val = state ? (ret | mask) : (ret & ~mask);
1506 data->ps_int = FIELD_GET(VCNL4040_PS_CONF2_PS_INT, val);
1507 ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1,
1515 mutex_unlock(&data->vcnl4000_lock);
1520 static irqreturn_t vcnl4040_irq_thread(int irq, void *p)
1522 struct iio_dev *indio_dev = p;
1523 struct vcnl4000_data *data = iio_priv(indio_dev);
1526 ret = i2c_smbus_read_word_data(data->client, data->chip_spec->int_reg);
1530 if (ret & VCNL4040_PS_IF_CLOSE) {
1531 iio_push_event(indio_dev,
1532 IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
1535 iio_get_time_ns(indio_dev));
1538 if (ret & VCNL4040_PS_IF_AWAY) {
1539 iio_push_event(indio_dev,
1540 IIO_UNMOD_EVENT_CODE(IIO_PROXIMITY, 0,
1542 IIO_EV_DIR_FALLING),
1543 iio_get_time_ns(indio_dev));
1546 if (ret & VCNL4040_ALS_FALLING) {
1547 iio_push_event(indio_dev,
1548 IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
1550 IIO_EV_DIR_FALLING),
1551 iio_get_time_ns(indio_dev));
1554 if (ret & VCNL4040_ALS_RISING) {
1555 iio_push_event(indio_dev,
1556 IIO_UNMOD_EVENT_CODE(IIO_LIGHT, 0,
1559 iio_get_time_ns(indio_dev));
1565 static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev,
1567 const struct iio_chan_spec *chan,
1570 struct vcnl4000_data *data = iio_priv(indio_dev);
1572 return sprintf(buf, "%u\n", data->near_level);
1575 static irqreturn_t vcnl4010_irq_thread(int irq, void *p)
1577 struct iio_dev *indio_dev = p;
1578 struct vcnl4000_data *data = iio_priv(indio_dev);
1582 ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
1588 if (isr & VCNL4010_INT_THR) {
1589 if (test_bit(VCNL4010_INT_THR_LOW, &isr)) {
1590 iio_push_event(indio_dev,
1591 IIO_UNMOD_EVENT_CODE(
1595 IIO_EV_DIR_FALLING),
1596 iio_get_time_ns(indio_dev));
1599 if (test_bit(VCNL4010_INT_THR_HIGH, &isr)) {
1600 iio_push_event(indio_dev,
1601 IIO_UNMOD_EVENT_CODE(
1606 iio_get_time_ns(indio_dev));
1609 i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
1610 isr & VCNL4010_INT_THR);
1613 if (isr & VCNL4010_INT_DRDY && iio_buffer_enabled(indio_dev))
1614 iio_trigger_poll_nested(indio_dev->trig);
1620 static irqreturn_t vcnl4010_trigger_handler(int irq, void *p)
1622 struct iio_poll_func *pf = p;
1623 struct iio_dev *indio_dev = pf->indio_dev;
1624 struct vcnl4000_data *data = iio_priv(indio_dev);
1625 const unsigned long *active_scan_mask = indio_dev->active_scan_mask;
1626 u16 buffer[8] __aligned(8) = {0}; /* 1x16-bit + naturally aligned ts */
1627 bool data_read = false;
1632 ret = i2c_smbus_read_byte_data(data->client, VCNL4010_ISR);
1638 if (test_bit(0, active_scan_mask)) {
1639 if (test_bit(VCNL4010_INT_PROXIMITY, &isr)) {
1640 ret = vcnl4000_read_data(data,
1641 VCNL4000_PS_RESULT_HI,
1651 ret = i2c_smbus_write_byte_data(data->client, VCNL4010_ISR,
1652 isr & VCNL4010_INT_DRDY);
1659 iio_push_to_buffers_with_timestamp(indio_dev, buffer,
1660 iio_get_time_ns(indio_dev));
1663 iio_trigger_notify_done(indio_dev->trig);
1667 static int vcnl4010_buffer_postenable(struct iio_dev *indio_dev)
1669 struct vcnl4000_data *data = iio_priv(indio_dev);
1673 /* Do not enable the buffer if we are already capturing events. */
1674 if (vcnl4010_is_in_periodic_mode(data))
1677 ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL,
1678 VCNL4010_INT_PROX_EN);
1682 cmd = VCNL4000_SELF_TIMED_EN | VCNL4000_PROX_EN;
1683 return i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, cmd);
1686 static int vcnl4010_buffer_predisable(struct iio_dev *indio_dev)
1688 struct vcnl4000_data *data = iio_priv(indio_dev);
1691 ret = i2c_smbus_write_byte_data(data->client, VCNL4010_INT_CTRL, 0);
1695 return i2c_smbus_write_byte_data(data->client, VCNL4000_COMMAND, 0);
1698 static const struct iio_buffer_setup_ops vcnl4010_buffer_ops = {
1699 .postenable = &vcnl4010_buffer_postenable,
1700 .predisable = &vcnl4010_buffer_predisable,
1703 static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = {
1705 .name = "nearlevel",
1706 .shared = IIO_SEPARATE,
1707 .read = vcnl4000_read_near_level,
1712 static const struct iio_event_spec vcnl4000_event_spec[] = {
1714 .type = IIO_EV_TYPE_THRESH,
1715 .dir = IIO_EV_DIR_RISING,
1716 .mask_separate = BIT(IIO_EV_INFO_VALUE),
1718 .type = IIO_EV_TYPE_THRESH,
1719 .dir = IIO_EV_DIR_FALLING,
1720 .mask_separate = BIT(IIO_EV_INFO_VALUE),
1722 .type = IIO_EV_TYPE_THRESH,
1723 .dir = IIO_EV_DIR_EITHER,
1724 .mask_separate = BIT(IIO_EV_INFO_ENABLE),
1728 static const struct iio_event_spec vcnl4040_als_event_spec[] = {
1730 .type = IIO_EV_TYPE_THRESH,
1731 .dir = IIO_EV_DIR_RISING,
1732 .mask_separate = BIT(IIO_EV_INFO_VALUE),
1734 .type = IIO_EV_TYPE_THRESH,
1735 .dir = IIO_EV_DIR_FALLING,
1736 .mask_separate = BIT(IIO_EV_INFO_VALUE),
1738 .type = IIO_EV_TYPE_THRESH,
1739 .dir = IIO_EV_DIR_EITHER,
1740 .mask_separate = BIT(IIO_EV_INFO_ENABLE) | BIT(IIO_EV_INFO_PERIOD),
1744 static const struct iio_event_spec vcnl4040_event_spec[] = {
1746 .type = IIO_EV_TYPE_THRESH,
1747 .dir = IIO_EV_DIR_RISING,
1748 .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE),
1750 .type = IIO_EV_TYPE_THRESH,
1751 .dir = IIO_EV_DIR_FALLING,
1752 .mask_separate = BIT(IIO_EV_INFO_VALUE) | BIT(IIO_EV_INFO_ENABLE),
1754 .type = IIO_EV_TYPE_THRESH,
1755 .dir = IIO_EV_DIR_EITHER,
1756 .mask_separate = BIT(IIO_EV_INFO_PERIOD),
1760 static const struct iio_chan_spec vcnl4000_channels[] = {
1763 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1764 BIT(IIO_CHAN_INFO_SCALE),
1766 .type = IIO_PROXIMITY,
1767 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW),
1768 .ext_info = vcnl4000_ext_info,
1772 static const struct iio_chan_spec vcnl4010_channels[] = {
1776 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1777 BIT(IIO_CHAN_INFO_SCALE),
1779 .type = IIO_PROXIMITY,
1781 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1782 BIT(IIO_CHAN_INFO_SAMP_FREQ),
1783 .info_mask_separate_available = BIT(IIO_CHAN_INFO_SAMP_FREQ),
1784 .event_spec = vcnl4000_event_spec,
1785 .num_event_specs = ARRAY_SIZE(vcnl4000_event_spec),
1786 .ext_info = vcnl4000_ext_info,
1791 .endianness = IIO_CPU,
1794 IIO_CHAN_SOFT_TIMESTAMP(1),
1797 static const struct iio_chan_spec vcnl4040_channels[] = {
1800 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1801 BIT(IIO_CHAN_INFO_SCALE) |
1802 BIT(IIO_CHAN_INFO_INT_TIME),
1803 .info_mask_separate_available = BIT(IIO_CHAN_INFO_INT_TIME),
1804 .event_spec = vcnl4040_als_event_spec,
1805 .num_event_specs = ARRAY_SIZE(vcnl4040_als_event_spec),
1807 .type = IIO_PROXIMITY,
1808 .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) |
1809 BIT(IIO_CHAN_INFO_INT_TIME) |
1810 BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO) |
1811 BIT(IIO_CHAN_INFO_CALIBBIAS),
1812 .info_mask_separate_available = BIT(IIO_CHAN_INFO_INT_TIME) |
1813 BIT(IIO_CHAN_INFO_OVERSAMPLING_RATIO) |
1814 BIT(IIO_CHAN_INFO_CALIBBIAS),
1815 .ext_info = vcnl4000_ext_info,
1816 .event_spec = vcnl4040_event_spec,
1817 .num_event_specs = ARRAY_SIZE(vcnl4040_event_spec),
1821 static const struct iio_info vcnl4000_info = {
1822 .read_raw = vcnl4000_read_raw,
1825 static const struct iio_info vcnl4010_info = {
1826 .read_raw = vcnl4010_read_raw,
1827 .read_avail = vcnl4010_read_avail,
1828 .write_raw = vcnl4010_write_raw,
1829 .read_event_value = vcnl4010_read_event,
1830 .write_event_value = vcnl4010_write_event,
1831 .read_event_config = vcnl4010_read_event_config,
1832 .write_event_config = vcnl4010_write_event_config,
1835 static const struct iio_info vcnl4040_info = {
1836 .read_raw = vcnl4000_read_raw,
1837 .write_raw = vcnl4040_write_raw,
1838 .read_event_value = vcnl4040_read_event,
1839 .write_event_value = vcnl4040_write_event,
1840 .read_event_config = vcnl4040_read_event_config,
1841 .write_event_config = vcnl4040_write_event_config,
1842 .read_avail = vcnl4040_read_avail,
1845 static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = {
1848 .init = vcnl4000_init,
1849 .measure_light = vcnl4000_measure_light,
1850 .measure_proximity = vcnl4000_measure_proximity,
1851 .set_power_state = vcnl4000_set_power_state,
1852 .channels = vcnl4000_channels,
1853 .num_channels = ARRAY_SIZE(vcnl4000_channels),
1854 .info = &vcnl4000_info,
1857 .prod = "VCNL4010/4020",
1858 .init = vcnl4000_init,
1859 .measure_light = vcnl4000_measure_light,
1860 .measure_proximity = vcnl4000_measure_proximity,
1861 .set_power_state = vcnl4000_set_power_state,
1862 .channels = vcnl4010_channels,
1863 .num_channels = ARRAY_SIZE(vcnl4010_channels),
1864 .info = &vcnl4010_info,
1865 .irq_thread = vcnl4010_irq_thread,
1866 .trig_buffer_func = vcnl4010_trigger_handler,
1867 .buffer_setup_ops = &vcnl4010_buffer_ops,
1871 .init = vcnl4200_init,
1872 .measure_light = vcnl4200_measure_light,
1873 .measure_proximity = vcnl4200_measure_proximity,
1874 .set_power_state = vcnl4200_set_power_state,
1875 .channels = vcnl4040_channels,
1876 .num_channels = ARRAY_SIZE(vcnl4040_channels),
1877 .info = &vcnl4040_info,
1878 .irq_thread = vcnl4040_irq_thread,
1879 .int_reg = VCNL4040_INT_FLAGS,
1880 .ps_it_times = &vcnl4040_ps_it_times,
1881 .num_ps_it_times = ARRAY_SIZE(vcnl4040_ps_it_times),
1882 .als_it_times = &vcnl4040_als_it_times,
1883 .num_als_it_times = ARRAY_SIZE(vcnl4040_als_it_times),
1884 .ulux_step = 100000,
1888 .init = vcnl4200_init,
1889 .measure_light = vcnl4200_measure_light,
1890 .measure_proximity = vcnl4200_measure_proximity,
1891 .set_power_state = vcnl4200_set_power_state,
1892 .channels = vcnl4040_channels,
1893 .num_channels = ARRAY_SIZE(vcnl4000_channels),
1894 .info = &vcnl4040_info,
1895 .irq_thread = vcnl4040_irq_thread,
1896 .int_reg = VCNL4200_INT_FLAGS,
1897 .ps_it_times = &vcnl4200_ps_it_times,
1898 .num_ps_it_times = ARRAY_SIZE(vcnl4200_ps_it_times),
1899 .als_it_times = &vcnl4200_als_it_times,
1900 .num_als_it_times = ARRAY_SIZE(vcnl4200_als_it_times),
1905 static const struct iio_trigger_ops vcnl4010_trigger_ops = {
1906 .validate_device = iio_trigger_validate_own_device,
1909 static int vcnl4010_probe_trigger(struct iio_dev *indio_dev)
1911 struct vcnl4000_data *data = iio_priv(indio_dev);
1912 struct i2c_client *client = data->client;
1913 struct iio_trigger *trigger;
1915 trigger = devm_iio_trigger_alloc(&client->dev, "%s-dev%d",
1917 iio_device_id(indio_dev));
1921 trigger->ops = &vcnl4010_trigger_ops;
1922 iio_trigger_set_drvdata(trigger, indio_dev);
1924 return devm_iio_trigger_register(&client->dev, trigger);
1927 static int vcnl4000_probe(struct i2c_client *client)
1929 const struct i2c_device_id *id = i2c_client_get_device_id(client);
1930 struct vcnl4000_data *data;
1931 struct iio_dev *indio_dev;
1934 indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data));
1938 data = iio_priv(indio_dev);
1939 i2c_set_clientdata(client, indio_dev);
1940 data->client = client;
1941 data->id = id->driver_data;
1942 data->chip_spec = &vcnl4000_chip_spec_cfg[data->id];
1944 mutex_init(&data->vcnl4000_lock);
1946 ret = data->chip_spec->init(data);
1950 dev_dbg(&client->dev, "%s Ambient light/proximity sensor, Rev: %02x\n",
1951 data->chip_spec->prod, data->rev);
1953 if (device_property_read_u32(&client->dev, "proximity-near-level",
1955 data->near_level = 0;
1957 indio_dev->info = data->chip_spec->info;
1958 indio_dev->channels = data->chip_spec->channels;
1959 indio_dev->num_channels = data->chip_spec->num_channels;
1960 indio_dev->name = VCNL4000_DRV_NAME;
1961 indio_dev->modes = INDIO_DIRECT_MODE;
1963 if (data->chip_spec->trig_buffer_func &&
1964 data->chip_spec->buffer_setup_ops) {
1965 ret = devm_iio_triggered_buffer_setup(&client->dev, indio_dev,
1967 data->chip_spec->trig_buffer_func,
1968 data->chip_spec->buffer_setup_ops);
1970 dev_err(&client->dev,
1971 "unable to setup iio triggered buffer\n");
1976 if (client->irq && data->chip_spec->irq_thread) {
1977 ret = devm_request_threaded_irq(&client->dev, client->irq,
1978 NULL, data->chip_spec->irq_thread,
1979 IRQF_TRIGGER_FALLING |
1984 dev_err(&client->dev, "irq request failed\n");
1988 ret = vcnl4010_probe_trigger(indio_dev);
1993 ret = pm_runtime_set_active(&client->dev);
1997 ret = iio_device_register(indio_dev);
2001 pm_runtime_enable(&client->dev);
2002 pm_runtime_set_autosuspend_delay(&client->dev, VCNL4000_SLEEP_DELAY_MS);
2003 pm_runtime_use_autosuspend(&client->dev);
2007 data->chip_spec->set_power_state(data, false);
2011 static const struct of_device_id vcnl_4000_of_match[] = {
2013 .compatible = "vishay,vcnl4000",
2014 .data = (void *)VCNL4000,
2017 .compatible = "vishay,vcnl4010",
2018 .data = (void *)VCNL4010,
2021 .compatible = "vishay,vcnl4020",
2022 .data = (void *)VCNL4010,
2025 .compatible = "vishay,vcnl4040",
2026 .data = (void *)VCNL4040,
2029 .compatible = "vishay,vcnl4200",
2030 .data = (void *)VCNL4200,
2034 MODULE_DEVICE_TABLE(of, vcnl_4000_of_match);
2036 static void vcnl4000_remove(struct i2c_client *client)
2038 struct iio_dev *indio_dev = i2c_get_clientdata(client);
2039 struct vcnl4000_data *data = iio_priv(indio_dev);
2042 pm_runtime_dont_use_autosuspend(&client->dev);
2043 pm_runtime_disable(&client->dev);
2044 iio_device_unregister(indio_dev);
2045 pm_runtime_set_suspended(&client->dev);
2047 ret = data->chip_spec->set_power_state(data, false);
2049 dev_warn(&client->dev, "Failed to power down (%pe)\n",
2053 static int vcnl4000_runtime_suspend(struct device *dev)
2055 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
2056 struct vcnl4000_data *data = iio_priv(indio_dev);
2058 return data->chip_spec->set_power_state(data, false);
2061 static int vcnl4000_runtime_resume(struct device *dev)
2063 struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev));
2064 struct vcnl4000_data *data = iio_priv(indio_dev);
2066 return data->chip_spec->set_power_state(data, true);
2069 static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4000_pm_ops, vcnl4000_runtime_suspend,
2070 vcnl4000_runtime_resume, NULL);
2072 static struct i2c_driver vcnl4000_driver = {
2074 .name = VCNL4000_DRV_NAME,
2075 .pm = pm_ptr(&vcnl4000_pm_ops),
2076 .of_match_table = vcnl_4000_of_match,
2078 .probe = vcnl4000_probe,
2079 .id_table = vcnl4000_id,
2080 .remove = vcnl4000_remove,
2083 module_i2c_driver(vcnl4000_driver);
2085 MODULE_AUTHOR("Peter Meerwald <pmeerw@pmeerw.net>");
2086 MODULE_AUTHOR("Mathieu Othacehe <m.othacehe@gmail.com>");
2087 MODULE_DESCRIPTION("Vishay VCNL4000 proximity/ambient light sensor driver");
2088 MODULE_LICENSE("GPL");