162306a36Sopenharmony_ci// SPDX-License-Identifier: GPL-2.0-only 262306a36Sopenharmony_ci/* 362306a36Sopenharmony_ci * apds9300.c - IIO driver for Avago APDS9300 ambient light sensor 462306a36Sopenharmony_ci * 562306a36Sopenharmony_ci * Copyright 2013 Oleksandr Kravchenko <o.v.kravchenko@globallogic.com> 662306a36Sopenharmony_ci */ 762306a36Sopenharmony_ci 862306a36Sopenharmony_ci#include <linux/module.h> 962306a36Sopenharmony_ci#include <linux/slab.h> 1062306a36Sopenharmony_ci#include <linux/pm.h> 1162306a36Sopenharmony_ci#include <linux/i2c.h> 1262306a36Sopenharmony_ci#include <linux/err.h> 1362306a36Sopenharmony_ci#include <linux/mutex.h> 1462306a36Sopenharmony_ci#include <linux/interrupt.h> 1562306a36Sopenharmony_ci#include <linux/iio/iio.h> 1662306a36Sopenharmony_ci#include <linux/iio/sysfs.h> 1762306a36Sopenharmony_ci#include <linux/iio/events.h> 1862306a36Sopenharmony_ci 1962306a36Sopenharmony_ci#define APDS9300_DRV_NAME "apds9300" 2062306a36Sopenharmony_ci#define APDS9300_IRQ_NAME "apds9300_event" 2162306a36Sopenharmony_ci 2262306a36Sopenharmony_ci/* Command register bits */ 2362306a36Sopenharmony_ci#define APDS9300_CMD BIT(7) /* Select command register. Must write as 1 */ 2462306a36Sopenharmony_ci#define APDS9300_WORD BIT(5) /* I2C write/read: if 1 word, if 0 byte */ 2562306a36Sopenharmony_ci#define APDS9300_CLEAR BIT(6) /* Interrupt clear. Clears pending interrupt */ 2662306a36Sopenharmony_ci 2762306a36Sopenharmony_ci/* Register set */ 2862306a36Sopenharmony_ci#define APDS9300_CONTROL 0x00 /* Control of basic functions */ 2962306a36Sopenharmony_ci#define APDS9300_THRESHLOWLOW 0x02 /* Low byte of low interrupt threshold */ 3062306a36Sopenharmony_ci#define APDS9300_THRESHHIGHLOW 0x04 /* Low byte of high interrupt threshold */ 3162306a36Sopenharmony_ci#define APDS9300_INTERRUPT 0x06 /* Interrupt control */ 3262306a36Sopenharmony_ci#define APDS9300_DATA0LOW 0x0c /* Low byte of ADC channel 0 */ 3362306a36Sopenharmony_ci#define APDS9300_DATA1LOW 0x0e /* Low byte of ADC channel 1 */ 3462306a36Sopenharmony_ci 3562306a36Sopenharmony_ci/* Power on/off value for APDS9300_CONTROL register */ 3662306a36Sopenharmony_ci#define APDS9300_POWER_ON 0x03 3762306a36Sopenharmony_ci#define APDS9300_POWER_OFF 0x00 3862306a36Sopenharmony_ci 3962306a36Sopenharmony_ci/* Interrupts */ 4062306a36Sopenharmony_ci#define APDS9300_INTR_ENABLE 0x10 4162306a36Sopenharmony_ci/* Interrupt Persist Function: Any value outside of threshold range */ 4262306a36Sopenharmony_ci#define APDS9300_THRESH_INTR 0x01 4362306a36Sopenharmony_ci 4462306a36Sopenharmony_ci#define APDS9300_THRESH_MAX 0xffff /* Max threshold value */ 4562306a36Sopenharmony_ci 4662306a36Sopenharmony_cistruct apds9300_data { 4762306a36Sopenharmony_ci struct i2c_client *client; 4862306a36Sopenharmony_ci struct mutex mutex; 4962306a36Sopenharmony_ci int power_state; 5062306a36Sopenharmony_ci int thresh_low; 5162306a36Sopenharmony_ci int thresh_hi; 5262306a36Sopenharmony_ci int intr_en; 5362306a36Sopenharmony_ci}; 5462306a36Sopenharmony_ci 5562306a36Sopenharmony_ci/* Lux calculation */ 5662306a36Sopenharmony_ci 5762306a36Sopenharmony_ci/* Calculated values 1000 * (CH1/CH0)^1.4 for CH1/CH0 from 0 to 0.52 */ 5862306a36Sopenharmony_cistatic const u16 apds9300_lux_ratio[] = { 5962306a36Sopenharmony_ci 0, 2, 4, 7, 11, 15, 19, 24, 29, 34, 40, 45, 51, 57, 64, 70, 77, 84, 91, 6062306a36Sopenharmony_ci 98, 105, 112, 120, 128, 136, 144, 152, 160, 168, 177, 185, 194, 203, 6162306a36Sopenharmony_ci 212, 221, 230, 239, 249, 258, 268, 277, 287, 297, 307, 317, 327, 337, 6262306a36Sopenharmony_ci 347, 358, 368, 379, 390, 400, 6362306a36Sopenharmony_ci}; 6462306a36Sopenharmony_ci 6562306a36Sopenharmony_cistatic unsigned long apds9300_calculate_lux(u16 ch0, u16 ch1) 6662306a36Sopenharmony_ci{ 6762306a36Sopenharmony_ci unsigned long lux, tmp; 6862306a36Sopenharmony_ci 6962306a36Sopenharmony_ci /* avoid division by zero */ 7062306a36Sopenharmony_ci if (ch0 == 0) 7162306a36Sopenharmony_ci return 0; 7262306a36Sopenharmony_ci 7362306a36Sopenharmony_ci tmp = DIV_ROUND_UP(ch1 * 100, ch0); 7462306a36Sopenharmony_ci if (tmp <= 52) { 7562306a36Sopenharmony_ci lux = 3150 * ch0 - (unsigned long)DIV_ROUND_UP_ULL(ch0 7662306a36Sopenharmony_ci * apds9300_lux_ratio[tmp] * 5930ull, 1000); 7762306a36Sopenharmony_ci } else if (tmp <= 65) { 7862306a36Sopenharmony_ci lux = 2290 * ch0 - 2910 * ch1; 7962306a36Sopenharmony_ci } else if (tmp <= 80) { 8062306a36Sopenharmony_ci lux = 1570 * ch0 - 1800 * ch1; 8162306a36Sopenharmony_ci } else if (tmp <= 130) { 8262306a36Sopenharmony_ci lux = 338 * ch0 - 260 * ch1; 8362306a36Sopenharmony_ci } else { 8462306a36Sopenharmony_ci lux = 0; 8562306a36Sopenharmony_ci } 8662306a36Sopenharmony_ci 8762306a36Sopenharmony_ci return lux / 100000; 8862306a36Sopenharmony_ci} 8962306a36Sopenharmony_ci 9062306a36Sopenharmony_cistatic int apds9300_get_adc_val(struct apds9300_data *data, int adc_number) 9162306a36Sopenharmony_ci{ 9262306a36Sopenharmony_ci int ret; 9362306a36Sopenharmony_ci u8 flags = APDS9300_CMD | APDS9300_WORD; 9462306a36Sopenharmony_ci 9562306a36Sopenharmony_ci if (!data->power_state) 9662306a36Sopenharmony_ci return -EBUSY; 9762306a36Sopenharmony_ci 9862306a36Sopenharmony_ci /* Select ADC0 or ADC1 data register */ 9962306a36Sopenharmony_ci flags |= adc_number ? APDS9300_DATA1LOW : APDS9300_DATA0LOW; 10062306a36Sopenharmony_ci 10162306a36Sopenharmony_ci ret = i2c_smbus_read_word_data(data->client, flags); 10262306a36Sopenharmony_ci if (ret < 0) 10362306a36Sopenharmony_ci dev_err(&data->client->dev, 10462306a36Sopenharmony_ci "failed to read ADC%d value\n", adc_number); 10562306a36Sopenharmony_ci 10662306a36Sopenharmony_ci return ret; 10762306a36Sopenharmony_ci} 10862306a36Sopenharmony_ci 10962306a36Sopenharmony_cistatic int apds9300_set_thresh_low(struct apds9300_data *data, int value) 11062306a36Sopenharmony_ci{ 11162306a36Sopenharmony_ci int ret; 11262306a36Sopenharmony_ci 11362306a36Sopenharmony_ci if (!data->power_state) 11462306a36Sopenharmony_ci return -EBUSY; 11562306a36Sopenharmony_ci 11662306a36Sopenharmony_ci if (value > APDS9300_THRESH_MAX) 11762306a36Sopenharmony_ci return -EINVAL; 11862306a36Sopenharmony_ci 11962306a36Sopenharmony_ci ret = i2c_smbus_write_word_data(data->client, APDS9300_THRESHLOWLOW 12062306a36Sopenharmony_ci | APDS9300_CMD | APDS9300_WORD, value); 12162306a36Sopenharmony_ci if (ret) { 12262306a36Sopenharmony_ci dev_err(&data->client->dev, "failed to set thresh_low\n"); 12362306a36Sopenharmony_ci return ret; 12462306a36Sopenharmony_ci } 12562306a36Sopenharmony_ci data->thresh_low = value; 12662306a36Sopenharmony_ci 12762306a36Sopenharmony_ci return 0; 12862306a36Sopenharmony_ci} 12962306a36Sopenharmony_ci 13062306a36Sopenharmony_cistatic int apds9300_set_thresh_hi(struct apds9300_data *data, int value) 13162306a36Sopenharmony_ci{ 13262306a36Sopenharmony_ci int ret; 13362306a36Sopenharmony_ci 13462306a36Sopenharmony_ci if (!data->power_state) 13562306a36Sopenharmony_ci return -EBUSY; 13662306a36Sopenharmony_ci 13762306a36Sopenharmony_ci if (value > APDS9300_THRESH_MAX) 13862306a36Sopenharmony_ci return -EINVAL; 13962306a36Sopenharmony_ci 14062306a36Sopenharmony_ci ret = i2c_smbus_write_word_data(data->client, APDS9300_THRESHHIGHLOW 14162306a36Sopenharmony_ci | APDS9300_CMD | APDS9300_WORD, value); 14262306a36Sopenharmony_ci if (ret) { 14362306a36Sopenharmony_ci dev_err(&data->client->dev, "failed to set thresh_hi\n"); 14462306a36Sopenharmony_ci return ret; 14562306a36Sopenharmony_ci } 14662306a36Sopenharmony_ci data->thresh_hi = value; 14762306a36Sopenharmony_ci 14862306a36Sopenharmony_ci return 0; 14962306a36Sopenharmony_ci} 15062306a36Sopenharmony_ci 15162306a36Sopenharmony_cistatic int apds9300_set_intr_state(struct apds9300_data *data, int state) 15262306a36Sopenharmony_ci{ 15362306a36Sopenharmony_ci int ret; 15462306a36Sopenharmony_ci u8 cmd; 15562306a36Sopenharmony_ci 15662306a36Sopenharmony_ci if (!data->power_state) 15762306a36Sopenharmony_ci return -EBUSY; 15862306a36Sopenharmony_ci 15962306a36Sopenharmony_ci cmd = state ? APDS9300_INTR_ENABLE | APDS9300_THRESH_INTR : 0x00; 16062306a36Sopenharmony_ci ret = i2c_smbus_write_byte_data(data->client, 16162306a36Sopenharmony_ci APDS9300_INTERRUPT | APDS9300_CMD, cmd); 16262306a36Sopenharmony_ci if (ret) { 16362306a36Sopenharmony_ci dev_err(&data->client->dev, 16462306a36Sopenharmony_ci "failed to set interrupt state %d\n", state); 16562306a36Sopenharmony_ci return ret; 16662306a36Sopenharmony_ci } 16762306a36Sopenharmony_ci data->intr_en = state; 16862306a36Sopenharmony_ci 16962306a36Sopenharmony_ci return 0; 17062306a36Sopenharmony_ci} 17162306a36Sopenharmony_ci 17262306a36Sopenharmony_cistatic int apds9300_set_power_state(struct apds9300_data *data, int state) 17362306a36Sopenharmony_ci{ 17462306a36Sopenharmony_ci int ret; 17562306a36Sopenharmony_ci u8 cmd; 17662306a36Sopenharmony_ci 17762306a36Sopenharmony_ci cmd = state ? APDS9300_POWER_ON : APDS9300_POWER_OFF; 17862306a36Sopenharmony_ci ret = i2c_smbus_write_byte_data(data->client, 17962306a36Sopenharmony_ci APDS9300_CONTROL | APDS9300_CMD, cmd); 18062306a36Sopenharmony_ci if (ret) { 18162306a36Sopenharmony_ci dev_err(&data->client->dev, 18262306a36Sopenharmony_ci "failed to set power state %d\n", state); 18362306a36Sopenharmony_ci return ret; 18462306a36Sopenharmony_ci } 18562306a36Sopenharmony_ci data->power_state = state; 18662306a36Sopenharmony_ci 18762306a36Sopenharmony_ci return 0; 18862306a36Sopenharmony_ci} 18962306a36Sopenharmony_ci 19062306a36Sopenharmony_cistatic void apds9300_clear_intr(struct apds9300_data *data) 19162306a36Sopenharmony_ci{ 19262306a36Sopenharmony_ci int ret; 19362306a36Sopenharmony_ci 19462306a36Sopenharmony_ci ret = i2c_smbus_write_byte(data->client, APDS9300_CLEAR | APDS9300_CMD); 19562306a36Sopenharmony_ci if (ret < 0) 19662306a36Sopenharmony_ci dev_err(&data->client->dev, "failed to clear interrupt\n"); 19762306a36Sopenharmony_ci} 19862306a36Sopenharmony_ci 19962306a36Sopenharmony_cistatic int apds9300_chip_init(struct apds9300_data *data) 20062306a36Sopenharmony_ci{ 20162306a36Sopenharmony_ci int ret; 20262306a36Sopenharmony_ci 20362306a36Sopenharmony_ci /* Need to set power off to ensure that the chip is off */ 20462306a36Sopenharmony_ci ret = apds9300_set_power_state(data, 0); 20562306a36Sopenharmony_ci if (ret < 0) 20662306a36Sopenharmony_ci goto err; 20762306a36Sopenharmony_ci /* 20862306a36Sopenharmony_ci * Probe the chip. To do so we try to power up the device and then to 20962306a36Sopenharmony_ci * read back the 0x03 code 21062306a36Sopenharmony_ci */ 21162306a36Sopenharmony_ci ret = apds9300_set_power_state(data, 1); 21262306a36Sopenharmony_ci if (ret < 0) 21362306a36Sopenharmony_ci goto err; 21462306a36Sopenharmony_ci ret = i2c_smbus_read_byte_data(data->client, 21562306a36Sopenharmony_ci APDS9300_CONTROL | APDS9300_CMD); 21662306a36Sopenharmony_ci if (ret != APDS9300_POWER_ON) { 21762306a36Sopenharmony_ci ret = -ENODEV; 21862306a36Sopenharmony_ci goto err; 21962306a36Sopenharmony_ci } 22062306a36Sopenharmony_ci /* 22162306a36Sopenharmony_ci * Disable interrupt to ensure thai it is doesn't enable 22262306a36Sopenharmony_ci * i.e. after device soft reset 22362306a36Sopenharmony_ci */ 22462306a36Sopenharmony_ci ret = apds9300_set_intr_state(data, 0); 22562306a36Sopenharmony_ci if (ret < 0) 22662306a36Sopenharmony_ci goto err; 22762306a36Sopenharmony_ci 22862306a36Sopenharmony_ci return 0; 22962306a36Sopenharmony_ci 23062306a36Sopenharmony_cierr: 23162306a36Sopenharmony_ci dev_err(&data->client->dev, "failed to init the chip\n"); 23262306a36Sopenharmony_ci return ret; 23362306a36Sopenharmony_ci} 23462306a36Sopenharmony_ci 23562306a36Sopenharmony_cistatic int apds9300_read_raw(struct iio_dev *indio_dev, 23662306a36Sopenharmony_ci struct iio_chan_spec const *chan, int *val, int *val2, 23762306a36Sopenharmony_ci long mask) 23862306a36Sopenharmony_ci{ 23962306a36Sopenharmony_ci int ch0, ch1, ret = -EINVAL; 24062306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 24162306a36Sopenharmony_ci 24262306a36Sopenharmony_ci mutex_lock(&data->mutex); 24362306a36Sopenharmony_ci switch (chan->type) { 24462306a36Sopenharmony_ci case IIO_LIGHT: 24562306a36Sopenharmony_ci ch0 = apds9300_get_adc_val(data, 0); 24662306a36Sopenharmony_ci if (ch0 < 0) { 24762306a36Sopenharmony_ci ret = ch0; 24862306a36Sopenharmony_ci break; 24962306a36Sopenharmony_ci } 25062306a36Sopenharmony_ci ch1 = apds9300_get_adc_val(data, 1); 25162306a36Sopenharmony_ci if (ch1 < 0) { 25262306a36Sopenharmony_ci ret = ch1; 25362306a36Sopenharmony_ci break; 25462306a36Sopenharmony_ci } 25562306a36Sopenharmony_ci *val = apds9300_calculate_lux(ch0, ch1); 25662306a36Sopenharmony_ci ret = IIO_VAL_INT; 25762306a36Sopenharmony_ci break; 25862306a36Sopenharmony_ci case IIO_INTENSITY: 25962306a36Sopenharmony_ci ret = apds9300_get_adc_val(data, chan->channel); 26062306a36Sopenharmony_ci if (ret < 0) 26162306a36Sopenharmony_ci break; 26262306a36Sopenharmony_ci *val = ret; 26362306a36Sopenharmony_ci ret = IIO_VAL_INT; 26462306a36Sopenharmony_ci break; 26562306a36Sopenharmony_ci default: 26662306a36Sopenharmony_ci break; 26762306a36Sopenharmony_ci } 26862306a36Sopenharmony_ci mutex_unlock(&data->mutex); 26962306a36Sopenharmony_ci 27062306a36Sopenharmony_ci return ret; 27162306a36Sopenharmony_ci} 27262306a36Sopenharmony_ci 27362306a36Sopenharmony_cistatic int apds9300_read_thresh(struct iio_dev *indio_dev, 27462306a36Sopenharmony_ci const struct iio_chan_spec *chan, enum iio_event_type type, 27562306a36Sopenharmony_ci enum iio_event_direction dir, enum iio_event_info info, 27662306a36Sopenharmony_ci int *val, int *val2) 27762306a36Sopenharmony_ci{ 27862306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 27962306a36Sopenharmony_ci 28062306a36Sopenharmony_ci switch (dir) { 28162306a36Sopenharmony_ci case IIO_EV_DIR_RISING: 28262306a36Sopenharmony_ci *val = data->thresh_hi; 28362306a36Sopenharmony_ci break; 28462306a36Sopenharmony_ci case IIO_EV_DIR_FALLING: 28562306a36Sopenharmony_ci *val = data->thresh_low; 28662306a36Sopenharmony_ci break; 28762306a36Sopenharmony_ci default: 28862306a36Sopenharmony_ci return -EINVAL; 28962306a36Sopenharmony_ci } 29062306a36Sopenharmony_ci 29162306a36Sopenharmony_ci return IIO_VAL_INT; 29262306a36Sopenharmony_ci} 29362306a36Sopenharmony_ci 29462306a36Sopenharmony_cistatic int apds9300_write_thresh(struct iio_dev *indio_dev, 29562306a36Sopenharmony_ci const struct iio_chan_spec *chan, enum iio_event_type type, 29662306a36Sopenharmony_ci enum iio_event_direction dir, enum iio_event_info info, int val, 29762306a36Sopenharmony_ci int val2) 29862306a36Sopenharmony_ci{ 29962306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 30062306a36Sopenharmony_ci int ret; 30162306a36Sopenharmony_ci 30262306a36Sopenharmony_ci mutex_lock(&data->mutex); 30362306a36Sopenharmony_ci if (dir == IIO_EV_DIR_RISING) 30462306a36Sopenharmony_ci ret = apds9300_set_thresh_hi(data, val); 30562306a36Sopenharmony_ci else 30662306a36Sopenharmony_ci ret = apds9300_set_thresh_low(data, val); 30762306a36Sopenharmony_ci mutex_unlock(&data->mutex); 30862306a36Sopenharmony_ci 30962306a36Sopenharmony_ci return ret; 31062306a36Sopenharmony_ci} 31162306a36Sopenharmony_ci 31262306a36Sopenharmony_cistatic int apds9300_read_interrupt_config(struct iio_dev *indio_dev, 31362306a36Sopenharmony_ci const struct iio_chan_spec *chan, 31462306a36Sopenharmony_ci enum iio_event_type type, 31562306a36Sopenharmony_ci enum iio_event_direction dir) 31662306a36Sopenharmony_ci{ 31762306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 31862306a36Sopenharmony_ci 31962306a36Sopenharmony_ci return data->intr_en; 32062306a36Sopenharmony_ci} 32162306a36Sopenharmony_ci 32262306a36Sopenharmony_cistatic int apds9300_write_interrupt_config(struct iio_dev *indio_dev, 32362306a36Sopenharmony_ci const struct iio_chan_spec *chan, enum iio_event_type type, 32462306a36Sopenharmony_ci enum iio_event_direction dir, int state) 32562306a36Sopenharmony_ci{ 32662306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 32762306a36Sopenharmony_ci int ret; 32862306a36Sopenharmony_ci 32962306a36Sopenharmony_ci mutex_lock(&data->mutex); 33062306a36Sopenharmony_ci ret = apds9300_set_intr_state(data, state); 33162306a36Sopenharmony_ci mutex_unlock(&data->mutex); 33262306a36Sopenharmony_ci 33362306a36Sopenharmony_ci return ret; 33462306a36Sopenharmony_ci} 33562306a36Sopenharmony_ci 33662306a36Sopenharmony_cistatic const struct iio_info apds9300_info_no_irq = { 33762306a36Sopenharmony_ci .read_raw = apds9300_read_raw, 33862306a36Sopenharmony_ci}; 33962306a36Sopenharmony_ci 34062306a36Sopenharmony_cistatic const struct iio_info apds9300_info = { 34162306a36Sopenharmony_ci .read_raw = apds9300_read_raw, 34262306a36Sopenharmony_ci .read_event_value = apds9300_read_thresh, 34362306a36Sopenharmony_ci .write_event_value = apds9300_write_thresh, 34462306a36Sopenharmony_ci .read_event_config = apds9300_read_interrupt_config, 34562306a36Sopenharmony_ci .write_event_config = apds9300_write_interrupt_config, 34662306a36Sopenharmony_ci}; 34762306a36Sopenharmony_ci 34862306a36Sopenharmony_cistatic const struct iio_event_spec apds9300_event_spec[] = { 34962306a36Sopenharmony_ci { 35062306a36Sopenharmony_ci .type = IIO_EV_TYPE_THRESH, 35162306a36Sopenharmony_ci .dir = IIO_EV_DIR_RISING, 35262306a36Sopenharmony_ci .mask_separate = BIT(IIO_EV_INFO_VALUE) | 35362306a36Sopenharmony_ci BIT(IIO_EV_INFO_ENABLE), 35462306a36Sopenharmony_ci }, { 35562306a36Sopenharmony_ci .type = IIO_EV_TYPE_THRESH, 35662306a36Sopenharmony_ci .dir = IIO_EV_DIR_FALLING, 35762306a36Sopenharmony_ci .mask_separate = BIT(IIO_EV_INFO_VALUE) | 35862306a36Sopenharmony_ci BIT(IIO_EV_INFO_ENABLE), 35962306a36Sopenharmony_ci }, 36062306a36Sopenharmony_ci}; 36162306a36Sopenharmony_ci 36262306a36Sopenharmony_cistatic const struct iio_chan_spec apds9300_channels[] = { 36362306a36Sopenharmony_ci { 36462306a36Sopenharmony_ci .type = IIO_LIGHT, 36562306a36Sopenharmony_ci .channel = 0, 36662306a36Sopenharmony_ci .indexed = true, 36762306a36Sopenharmony_ci .info_mask_separate = BIT(IIO_CHAN_INFO_PROCESSED), 36862306a36Sopenharmony_ci }, { 36962306a36Sopenharmony_ci .type = IIO_INTENSITY, 37062306a36Sopenharmony_ci .channel = 0, 37162306a36Sopenharmony_ci .channel2 = IIO_MOD_LIGHT_BOTH, 37262306a36Sopenharmony_ci .indexed = true, 37362306a36Sopenharmony_ci .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 37462306a36Sopenharmony_ci .event_spec = apds9300_event_spec, 37562306a36Sopenharmony_ci .num_event_specs = ARRAY_SIZE(apds9300_event_spec), 37662306a36Sopenharmony_ci }, { 37762306a36Sopenharmony_ci .type = IIO_INTENSITY, 37862306a36Sopenharmony_ci .channel = 1, 37962306a36Sopenharmony_ci .channel2 = IIO_MOD_LIGHT_IR, 38062306a36Sopenharmony_ci .indexed = true, 38162306a36Sopenharmony_ci .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), 38262306a36Sopenharmony_ci }, 38362306a36Sopenharmony_ci}; 38462306a36Sopenharmony_ci 38562306a36Sopenharmony_cistatic irqreturn_t apds9300_interrupt_handler(int irq, void *private) 38662306a36Sopenharmony_ci{ 38762306a36Sopenharmony_ci struct iio_dev *dev_info = private; 38862306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(dev_info); 38962306a36Sopenharmony_ci 39062306a36Sopenharmony_ci iio_push_event(dev_info, 39162306a36Sopenharmony_ci IIO_UNMOD_EVENT_CODE(IIO_INTENSITY, 0, 39262306a36Sopenharmony_ci IIO_EV_TYPE_THRESH, 39362306a36Sopenharmony_ci IIO_EV_DIR_EITHER), 39462306a36Sopenharmony_ci iio_get_time_ns(dev_info)); 39562306a36Sopenharmony_ci 39662306a36Sopenharmony_ci apds9300_clear_intr(data); 39762306a36Sopenharmony_ci 39862306a36Sopenharmony_ci return IRQ_HANDLED; 39962306a36Sopenharmony_ci} 40062306a36Sopenharmony_ci 40162306a36Sopenharmony_cistatic int apds9300_probe(struct i2c_client *client) 40262306a36Sopenharmony_ci{ 40362306a36Sopenharmony_ci struct apds9300_data *data; 40462306a36Sopenharmony_ci struct iio_dev *indio_dev; 40562306a36Sopenharmony_ci int ret; 40662306a36Sopenharmony_ci 40762306a36Sopenharmony_ci indio_dev = devm_iio_device_alloc(&client->dev, sizeof(*data)); 40862306a36Sopenharmony_ci if (!indio_dev) 40962306a36Sopenharmony_ci return -ENOMEM; 41062306a36Sopenharmony_ci 41162306a36Sopenharmony_ci data = iio_priv(indio_dev); 41262306a36Sopenharmony_ci i2c_set_clientdata(client, indio_dev); 41362306a36Sopenharmony_ci data->client = client; 41462306a36Sopenharmony_ci 41562306a36Sopenharmony_ci ret = apds9300_chip_init(data); 41662306a36Sopenharmony_ci if (ret < 0) 41762306a36Sopenharmony_ci goto err; 41862306a36Sopenharmony_ci 41962306a36Sopenharmony_ci mutex_init(&data->mutex); 42062306a36Sopenharmony_ci 42162306a36Sopenharmony_ci indio_dev->channels = apds9300_channels; 42262306a36Sopenharmony_ci indio_dev->num_channels = ARRAY_SIZE(apds9300_channels); 42362306a36Sopenharmony_ci indio_dev->name = APDS9300_DRV_NAME; 42462306a36Sopenharmony_ci indio_dev->modes = INDIO_DIRECT_MODE; 42562306a36Sopenharmony_ci 42662306a36Sopenharmony_ci if (client->irq) 42762306a36Sopenharmony_ci indio_dev->info = &apds9300_info; 42862306a36Sopenharmony_ci else 42962306a36Sopenharmony_ci indio_dev->info = &apds9300_info_no_irq; 43062306a36Sopenharmony_ci 43162306a36Sopenharmony_ci if (client->irq) { 43262306a36Sopenharmony_ci ret = devm_request_threaded_irq(&client->dev, client->irq, 43362306a36Sopenharmony_ci NULL, apds9300_interrupt_handler, 43462306a36Sopenharmony_ci IRQF_TRIGGER_FALLING | IRQF_ONESHOT, 43562306a36Sopenharmony_ci APDS9300_IRQ_NAME, indio_dev); 43662306a36Sopenharmony_ci if (ret) { 43762306a36Sopenharmony_ci dev_err(&client->dev, "irq request error %d\n", -ret); 43862306a36Sopenharmony_ci goto err; 43962306a36Sopenharmony_ci } 44062306a36Sopenharmony_ci } 44162306a36Sopenharmony_ci 44262306a36Sopenharmony_ci ret = iio_device_register(indio_dev); 44362306a36Sopenharmony_ci if (ret < 0) 44462306a36Sopenharmony_ci goto err; 44562306a36Sopenharmony_ci 44662306a36Sopenharmony_ci return 0; 44762306a36Sopenharmony_ci 44862306a36Sopenharmony_cierr: 44962306a36Sopenharmony_ci /* Ensure that power off in case of error */ 45062306a36Sopenharmony_ci apds9300_set_power_state(data, 0); 45162306a36Sopenharmony_ci return ret; 45262306a36Sopenharmony_ci} 45362306a36Sopenharmony_ci 45462306a36Sopenharmony_cistatic void apds9300_remove(struct i2c_client *client) 45562306a36Sopenharmony_ci{ 45662306a36Sopenharmony_ci struct iio_dev *indio_dev = i2c_get_clientdata(client); 45762306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 45862306a36Sopenharmony_ci 45962306a36Sopenharmony_ci iio_device_unregister(indio_dev); 46062306a36Sopenharmony_ci 46162306a36Sopenharmony_ci /* Ensure that power off and interrupts are disabled */ 46262306a36Sopenharmony_ci apds9300_set_intr_state(data, 0); 46362306a36Sopenharmony_ci apds9300_set_power_state(data, 0); 46462306a36Sopenharmony_ci} 46562306a36Sopenharmony_ci 46662306a36Sopenharmony_cistatic int apds9300_suspend(struct device *dev) 46762306a36Sopenharmony_ci{ 46862306a36Sopenharmony_ci struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 46962306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 47062306a36Sopenharmony_ci int ret; 47162306a36Sopenharmony_ci 47262306a36Sopenharmony_ci mutex_lock(&data->mutex); 47362306a36Sopenharmony_ci ret = apds9300_set_power_state(data, 0); 47462306a36Sopenharmony_ci mutex_unlock(&data->mutex); 47562306a36Sopenharmony_ci 47662306a36Sopenharmony_ci return ret; 47762306a36Sopenharmony_ci} 47862306a36Sopenharmony_ci 47962306a36Sopenharmony_cistatic int apds9300_resume(struct device *dev) 48062306a36Sopenharmony_ci{ 48162306a36Sopenharmony_ci struct iio_dev *indio_dev = i2c_get_clientdata(to_i2c_client(dev)); 48262306a36Sopenharmony_ci struct apds9300_data *data = iio_priv(indio_dev); 48362306a36Sopenharmony_ci int ret; 48462306a36Sopenharmony_ci 48562306a36Sopenharmony_ci mutex_lock(&data->mutex); 48662306a36Sopenharmony_ci ret = apds9300_set_power_state(data, 1); 48762306a36Sopenharmony_ci mutex_unlock(&data->mutex); 48862306a36Sopenharmony_ci 48962306a36Sopenharmony_ci return ret; 49062306a36Sopenharmony_ci} 49162306a36Sopenharmony_ci 49262306a36Sopenharmony_cistatic DEFINE_SIMPLE_DEV_PM_OPS(apds9300_pm_ops, apds9300_suspend, 49362306a36Sopenharmony_ci apds9300_resume); 49462306a36Sopenharmony_ci 49562306a36Sopenharmony_cistatic const struct i2c_device_id apds9300_id[] = { 49662306a36Sopenharmony_ci { APDS9300_DRV_NAME, 0 }, 49762306a36Sopenharmony_ci { } 49862306a36Sopenharmony_ci}; 49962306a36Sopenharmony_ci 50062306a36Sopenharmony_ciMODULE_DEVICE_TABLE(i2c, apds9300_id); 50162306a36Sopenharmony_ci 50262306a36Sopenharmony_cistatic struct i2c_driver apds9300_driver = { 50362306a36Sopenharmony_ci .driver = { 50462306a36Sopenharmony_ci .name = APDS9300_DRV_NAME, 50562306a36Sopenharmony_ci .pm = pm_sleep_ptr(&apds9300_pm_ops), 50662306a36Sopenharmony_ci }, 50762306a36Sopenharmony_ci .probe = apds9300_probe, 50862306a36Sopenharmony_ci .remove = apds9300_remove, 50962306a36Sopenharmony_ci .id_table = apds9300_id, 51062306a36Sopenharmony_ci}; 51162306a36Sopenharmony_ci 51262306a36Sopenharmony_cimodule_i2c_driver(apds9300_driver); 51362306a36Sopenharmony_ci 51462306a36Sopenharmony_ciMODULE_AUTHOR("Kravchenko Oleksandr <o.v.kravchenko@globallogic.com>"); 51562306a36Sopenharmony_ciMODULE_AUTHOR("GlobalLogic inc."); 51662306a36Sopenharmony_ciMODULE_DESCRIPTION("APDS9300 ambient light photo sensor driver"); 51762306a36Sopenharmony_ciMODULE_LICENSE("GPL"); 518