// SPDX-License-Identifier: GPL-2.0 /* * VCNL4035 Ambient Light and Proximity Sensor - 7-bit I2C slave address 0x60 * * Copyright (c) 2018, DENX Software Engineering GmbH * Author: Parthiban Nallathambi <[email protected]> * * TODO: Proximity */ #include <linux/bitops.h> #include <linux/bitfield.h> #include <linux/i2c.h> #include <linux/module.h> #include <linux/pm_runtime.h> #include <linux/regmap.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 VCNL4035_DRV_NAME … #define VCNL4035_IRQ_NAME … #define VCNL4035_REGMAP_NAME … /* Device registers */ #define VCNL4035_ALS_CONF … #define VCNL4035_ALS_THDH … #define VCNL4035_ALS_THDL … #define VCNL4035_ALS_DATA … #define VCNL4035_WHITE_DATA … #define VCNL4035_INT_FLAG … #define VCNL4035_DEV_ID … /* Register masks */ #define VCNL4035_MODE_ALS_MASK … #define VCNL4035_MODE_ALS_WHITE_CHAN … #define VCNL4035_MODE_ALS_INT_MASK … #define VCNL4035_ALS_IT_MASK … #define VCNL4035_ALS_PERS_MASK … #define VCNL4035_INT_ALS_IF_H_MASK … #define VCNL4035_INT_ALS_IF_L_MASK … #define VCNL4035_DEV_ID_MASK … /* Default values */ #define VCNL4035_MODE_ALS_ENABLE … #define VCNL4035_MODE_ALS_DISABLE … #define VCNL4035_MODE_ALS_INT_ENABLE … #define VCNL4035_MODE_ALS_INT_DISABLE … #define VCNL4035_DEV_ID_VAL … #define VCNL4035_ALS_IT_DEFAULT … #define VCNL4035_ALS_PERS_DEFAULT … #define VCNL4035_ALS_THDH_DEFAULT … #define VCNL4035_ALS_THDL_DEFAULT … #define VCNL4035_SLEEP_DELAY_MS … struct vcnl4035_data { … }; static inline bool vcnl4035_is_triggered(struct vcnl4035_data *data) { … } static irqreturn_t vcnl4035_drdy_irq_thread(int irq, void *private) { … } /* Triggered buffer */ static irqreturn_t vcnl4035_trigger_consumer_handler(int irq, void *p) { … } static int vcnl4035_als_drdy_set_state(struct iio_trigger *trigger, bool enable_drdy) { … } static const struct iio_trigger_ops vcnl4035_trigger_ops = …; static int vcnl4035_set_pm_runtime_state(struct vcnl4035_data *data, bool on) { … } /* * Device IT INT Time (ms) Scale (lux/step) * 000 50 0.064 * 001 100 0.032 * 010 200 0.016 * 100 400 0.008 * 101 - 111 800 0.004 * Values are proportional, so ALS INT is selected for input due to * simplicity reason. Integration time value and scaling is * calculated based on device INT value * * Raw value needs to be scaled using ALS steps */ static int vcnl4035_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int vcnl4035_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } /* No direct ABI for persistence and threshold, so eventing */ static int vcnl4035_read_thresh(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 vcnl4035_write_thresh(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 IIO_CONST_ATTR_INT_TIME_AVAIL("50 100 200 400 800"); static struct attribute *vcnl4035_attributes[] = …; static const struct attribute_group vcnl4035_attribute_group = …; static const struct iio_info vcnl4035_info = …; static const struct iio_event_spec vcnl4035_event_spec[] = …; enum vcnl4035_scan_index_order { … }; static const struct iio_buffer_setup_ops iio_triggered_buffer_setup_ops = …; static const struct iio_chan_spec vcnl4035_channels[] = …; static int vcnl4035_set_als_power_state(struct vcnl4035_data *data, u8 status) { … } static int vcnl4035_init(struct vcnl4035_data *data) { … } static bool vcnl4035_is_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct regmap_config vcnl4035_regmap_config = …; static int vcnl4035_probe_trigger(struct iio_dev *indio_dev) { … } static int vcnl4035_probe(struct i2c_client *client) { … } static void vcnl4035_remove(struct i2c_client *client) { … } static int vcnl4035_runtime_suspend(struct device *dev) { … } static int vcnl4035_runtime_resume(struct device *dev) { … } static DEFINE_RUNTIME_DEV_PM_OPS(vcnl4035_pm_ops, vcnl4035_runtime_suspend, vcnl4035_runtime_resume, NULL); static const struct i2c_device_id vcnl4035_id[] = …; MODULE_DEVICE_TABLE(i2c, vcnl4035_id); static const struct of_device_id vcnl4035_of_match[] = …; MODULE_DEVICE_TABLE(of, vcnl4035_of_match); static struct i2c_driver vcnl4035_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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