// SPDX-License-Identifier: GPL-2.0-only /* * vcnl4000.c - Support for Vishay VCNL4000/4010/4020/4040/4200 combined ambient * light and proximity sensor * * Copyright 2012 Peter Meerwald <[email protected]> * Copyright 2019 Pursim SPC * Copyright 2020 Mathieu Othacehe <[email protected]> * * IIO driver for: * VCNL4000/10/20 (7-bit I2C slave address 0x13) * VCNL4040 (7-bit I2C slave address 0x60) * VCNL4200 (7-bit I2C slave address 0x51) * * TODO: * allow to adjust IR current * interrupts (VCNL4040, VCNL4200) */ #include <linux/bitfield.h> #include <linux/module.h> #include <linux/i2c.h> #include <linux/err.h> #include <linux/delay.h> #include <linux/pm_runtime.h> #include <linux/interrupt.h> #include <linux/units.h> #include <linux/iio/buffer.h> #include <linux/iio/events.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/trigger.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/triggered_buffer.h> #define VCNL4000_DRV_NAME … #define VCNL4000_PROD_ID … #define VCNL4010_PROD_ID … #define VCNL4040_PROD_ID … #define VCNL4200_PROD_ID … #define VCNL4000_COMMAND … #define VCNL4000_PROD_REV … #define VCNL4010_PROX_RATE … #define VCNL4000_LED_CURRENT … #define VCNL4000_AL_PARAM … #define VCNL4010_ALS_PARAM … #define VCNL4000_AL_RESULT_HI … #define VCNL4000_AL_RESULT_LO … #define VCNL4000_PS_RESULT_HI … #define VCNL4000_PS_RESULT_LO … #define VCNL4000_PS_MEAS_FREQ … #define VCNL4010_INT_CTRL … #define VCNL4000_PS_MOD_ADJ … #define VCNL4010_LOW_THR_HI … #define VCNL4010_LOW_THR_LO … #define VCNL4010_HIGH_THR_HI … #define VCNL4010_HIGH_THR_LO … #define VCNL4010_ISR … #define VCNL4200_AL_CONF … #define VCNL4200_PS_CONF1 … #define VCNL4200_PS_CONF3 … #define VCNL4040_PS_THDL_LM … #define VCNL4040_PS_THDH_LM … #define VCNL4040_ALS_THDL_LM … #define VCNL4040_ALS_THDH_LM … #define VCNL4200_PS_DATA … #define VCNL4200_AL_DATA … #define VCNL4040_INT_FLAGS … #define VCNL4200_INT_FLAGS … #define VCNL4200_DEV_ID … #define VCNL4040_DEV_ID … /* Bit masks for COMMAND register */ #define VCNL4000_AL_RDY … #define VCNL4000_PS_RDY … #define VCNL4000_AL_OD … #define VCNL4000_PS_OD … #define VCNL4000_ALS_EN … #define VCNL4000_PROX_EN … #define VCNL4000_SELF_TIMED_EN … #define VCNL4040_ALS_CONF_ALS_SHUTDOWN … #define VCNL4040_ALS_CONF_IT … #define VCNL4040_ALS_CONF_INT_EN … #define VCNL4040_ALS_CONF_PERS … #define VCNL4040_PS_CONF1_PS_SHUTDOWN … #define VCNL4040_PS_CONF2_PS_IT … #define VCNL4040_CONF1_PS_PERS … #define VCNL4040_PS_CONF2_PS_HD … #define VCNL4040_PS_CONF2_PS_INT … #define VCNL4040_PS_CONF3_MPS … #define VCNL4040_PS_MS_LED_I … #define VCNL4040_PS_IF_AWAY … #define VCNL4040_PS_IF_CLOSE … #define VCNL4040_ALS_RISING … #define VCNL4040_ALS_FALLING … /* Bit masks for interrupt registers. */ #define VCNL4010_INT_THR_SEL … #define VCNL4010_INT_THR_EN … #define VCNL4010_INT_ALS_EN … #define VCNL4010_INT_PROX_EN … #define VCNL4010_INT_THR_HIGH … #define VCNL4010_INT_THR_LOW … #define VCNL4010_INT_ALS … #define VCNL4010_INT_PROXIMITY … #define VCNL4010_INT_THR … #define VCNL4010_INT_DRDY … #define VCNL4040_CONF3_PS_MPS_16BITS … #define VCNL4040_CONF3_PS_LED_I_16BITS … #define VCNL4040_CONF3_PS_SAMPLE_16BITS … static const int vcnl4010_prox_sampling_frequency[][2] = …; static const int vcnl4040_ps_it_times[][2] = …; static const int vcnl4200_ps_it_times[][2] = …; static const int vcnl4040_als_it_times[][2] = …; static const int vcnl4200_als_it_times[][2] = …; static const int vcnl4040_ps_calibbias_ua[][2] = …; static const int vcnl4040_als_persistence[] = …; static const int vcnl4040_ps_persistence[] = …; static const int vcnl4040_ps_oversampling_ratio[] = …; #define VCNL4000_SLEEP_DELAY_MS … enum vcnl4000_device_ids { … }; struct vcnl4200_channel { … }; struct vcnl4000_data { … }; struct vcnl4000_chip_spec { … }; static const struct i2c_device_id vcnl4000_id[] = …; MODULE_DEVICE_TABLE(i2c, vcnl4000_id); static int vcnl4000_set_power_state(struct vcnl4000_data *data, bool on) { … } static int vcnl4000_init(struct vcnl4000_data *data) { int ret, prod_id; ret = i2c_smbus_read_byte_data(data->client, VCNL4000_PROD_REV); if (ret < 0) return ret; prod_id = ret >> 4; switch (prod_id) { case VCNL4000_PROD_ID: if (data->id != VCNL4000) dev_warn(&data->client->dev, "wrong device id, use vcnl4000"); break; case VCNL4010_PROD_ID: if (data->id != VCNL4010) dev_warn(&data->client->dev, "wrong device id, use vcnl4010/4020"); break; default: return -ENODEV; } data->rev = ret & 0xf; data->al_scale = 250000; return data->chip_spec->set_power_state(data, true); }; static ssize_t vcnl4000_write_als_enable(struct vcnl4000_data *data, bool en) { … } static ssize_t vcnl4000_write_ps_enable(struct vcnl4000_data *data, bool en) { … } static int vcnl4200_set_power_state(struct vcnl4000_data *data, bool on) { … } static int vcnl4200_init(struct vcnl4000_data *data) { int ret, id; u16 regval; ret = i2c_smbus_read_word_data(data->client, VCNL4200_DEV_ID); if (ret < 0) return ret; id = ret & 0xff; if (id != VCNL4200_PROD_ID) { ret = i2c_smbus_read_word_data(data->client, VCNL4040_DEV_ID); if (ret < 0) return ret; id = ret & 0xff; if (id != VCNL4040_PROD_ID) return -ENODEV; } dev_dbg(&data->client->dev, "device id 0x%x", id); data->rev = (ret >> 8) & 0xf; data->ps_int = 0; data->als_int = 0; data->vcnl4200_al.reg = VCNL4200_AL_DATA; data->vcnl4200_ps.reg = VCNL4200_PS_DATA; switch (id) { case VCNL4200_PROD_ID: /* Default wait time is 50ms, add 20% tolerance. */ data->vcnl4200_al.sampling_rate = ktime_set(0, 60000 * 1000); /* Default wait time is 4.8ms, add 20% tolerance. */ data->vcnl4200_ps.sampling_rate = ktime_set(0, 5760 * 1000); break; case VCNL4040_PROD_ID: /* Default wait time is 80ms, add 20% tolerance. */ data->vcnl4200_al.sampling_rate = ktime_set(0, 96000 * 1000); /* Default wait time is 5ms, add 20% tolerance. */ data->vcnl4200_ps.sampling_rate = ktime_set(0, 6000 * 1000); break; } data->al_scale = data->chip_spec->ulux_step; data->ps_scale = 16; mutex_init(&data->vcnl4200_al.lock); mutex_init(&data->vcnl4200_ps.lock); /* Use 16 bits proximity sensor readings */ ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF1); if (ret < 0) return ret; regval = ret | VCNL4040_PS_CONF2_PS_HD; ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF1, regval); if (ret < 0) return ret; /* Align proximity sensor sample rate to 16 bits data width */ ret = i2c_smbus_read_word_data(data->client, VCNL4200_PS_CONF3); if (ret < 0) return ret; regval = ret | VCNL4040_CONF3_PS_SAMPLE_16BITS; ret = i2c_smbus_write_word_data(data->client, VCNL4200_PS_CONF3, regval); if (ret < 0) return ret; ret = data->chip_spec->set_power_state(data, true); if (ret < 0) return ret; return 0; }; static int vcnl4000_read_data(struct vcnl4000_data *data, u8 data_reg, int *val) { … } static int vcnl4000_write_data(struct vcnl4000_data *data, u8 data_reg, int val) { … } static int vcnl4000_measure(struct vcnl4000_data *data, u8 req_mask, u8 rdy_mask, u8 data_reg, int *val) { … } static int vcnl4200_measure(struct vcnl4000_data *data, struct vcnl4200_channel *chan, int *val) { … } static int vcnl4000_measure_light(struct vcnl4000_data *data, int *val) { … } static int vcnl4200_measure_light(struct vcnl4000_data *data, int *val) { … } static int vcnl4000_measure_proximity(struct vcnl4000_data *data, int *val) { … } static int vcnl4200_measure_proximity(struct vcnl4000_data *data, int *val) { … } static int vcnl4010_read_proxy_samp_freq(struct vcnl4000_data *data, int *val, int *val2) { … } static bool vcnl4010_is_in_periodic_mode(struct vcnl4000_data *data) { … } static int vcnl4000_set_pm_runtime_state(struct vcnl4000_data *data, bool on) { … } static int vcnl4040_read_als_it(struct vcnl4000_data *data, int *val, int *val2) { … } static ssize_t vcnl4040_write_als_it(struct vcnl4000_data *data, int val) { … } static int vcnl4040_read_ps_it(struct vcnl4000_data *data, int *val, int *val2) { … } static ssize_t vcnl4040_write_ps_it(struct vcnl4000_data *data, int val) { … } static ssize_t vcnl4040_read_als_period(struct vcnl4000_data *data, int *val, int *val2) { … } static ssize_t vcnl4040_write_als_period(struct vcnl4000_data *data, int val, int val2) { … } static ssize_t vcnl4040_read_ps_period(struct vcnl4000_data *data, int *val, int *val2) { … } static ssize_t vcnl4040_write_ps_period(struct vcnl4000_data *data, int val, int val2) { … } static ssize_t vcnl4040_read_ps_oversampling_ratio(struct vcnl4000_data *data, int *val) { … } static ssize_t vcnl4040_write_ps_oversampling_ratio(struct vcnl4000_data *data, int val) { … } static ssize_t vcnl4040_read_ps_calibbias(struct vcnl4000_data *data, int *val, int *val2) { … } static ssize_t vcnl4040_write_ps_calibbias(struct vcnl4000_data *data, int val) { … } static int vcnl4000_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int vcnl4040_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int vcnl4040_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, const int **vals, int *type, int *length, long mask) { … } static int vcnl4010_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int vcnl4010_read_avail(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, const int **vals, int *type, int *length, long mask) { … } static int vcnl4010_write_proxy_samp_freq(struct vcnl4000_data *data, int val, int val2) { … } static int vcnl4010_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int vcnl4010_read_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2) { … } static int vcnl4010_write_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2) { … } static int vcnl4040_read_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int *val, int *val2) { … } static int vcnl4040_write_event(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, enum iio_event_info info, int val, int val2) { … } static bool vcnl4010_is_thr_enabled(struct vcnl4000_data *data) { … } static int vcnl4010_read_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { … } static int vcnl4010_config_threshold(struct iio_dev *indio_dev, bool state) { … } static int vcnl4010_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { … } static int vcnl4040_read_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { … } static int vcnl4040_write_event_config(struct iio_dev *indio_dev, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { … } static irqreturn_t vcnl4040_irq_thread(int irq, void *p) { … } static ssize_t vcnl4000_read_near_level(struct iio_dev *indio_dev, uintptr_t priv, const struct iio_chan_spec *chan, char *buf) { … } static irqreturn_t vcnl4010_irq_thread(int irq, void *p) { … } static irqreturn_t vcnl4010_trigger_handler(int irq, void *p) { … } static int vcnl4010_buffer_postenable(struct iio_dev *indio_dev) { … } static int vcnl4010_buffer_predisable(struct iio_dev *indio_dev) { … } static const struct iio_buffer_setup_ops vcnl4010_buffer_ops = …; static const struct iio_chan_spec_ext_info vcnl4000_ext_info[] = …; static const struct iio_event_spec vcnl4000_event_spec[] = …; static const struct iio_event_spec vcnl4040_als_event_spec[] = …; static const struct iio_event_spec vcnl4040_event_spec[] = …; static const struct iio_chan_spec vcnl4000_channels[] = …; static const struct iio_chan_spec vcnl4010_channels[] = …; static const struct iio_chan_spec vcnl4040_channels[] = …; static const struct iio_info vcnl4000_info = …; static const struct iio_info vcnl4010_info = …; static const struct iio_info vcnl4040_info = …; static const struct vcnl4000_chip_spec vcnl4000_chip_spec_cfg[] = …; static const struct iio_trigger_ops vcnl4010_trigger_ops = …; static int vcnl4010_probe_trigger(struct iio_dev *indio_dev) { … } static int vcnl4000_probe(struct i2c_client *client) { … } static const struct of_device_id vcnl_4000_of_match[] = …; MODULE_DEVICE_TABLE(of, vcnl_4000_of_match); static void vcnl4000_remove(struct i2c_client *client) { … } static int vcnl4000_runtime_suspend(struct device *dev) { … } static int vcnl4000_runtime_resume(struct device *dev) { … } static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4000_pm_ops, vcnl4000_runtime_suspend, vcnl4000_runtime_resume, NULL); static struct i2c_driver vcnl4000_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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