// SPDX-License-Identifier: GPL-2.0-only /* * tcs3472.c - Support for TAOS TCS3472 color light-to-digital converter * * Copyright (c) 2013 Peter Meerwald <[email protected]> * * Color light sensor with 16-bit channels for red, green, blue, clear); * 7-bit I2C slave address 0x39 (TCS34721, TCS34723) or 0x29 (TCS34725, * TCS34727) * * Datasheet: http://ams.com/eng/content/download/319364/1117183/file/TCS3472_Datasheet_EN_v2.pdf * * TODO: wait time */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/delay.h> #include <linux/pm.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #include <linux/iio/events.h> #include <linux/iio/trigger_consumer.h> #include <linux/iio/buffer.h> #include <linux/iio/triggered_buffer.h> #define TCS3472_DRV_NAME … #define TCS3472_COMMAND … #define TCS3472_AUTO_INCR … #define TCS3472_SPECIAL_FUNC … #define TCS3472_INTR_CLEAR … #define TCS3472_ENABLE … #define TCS3472_ATIME … #define TCS3472_WTIME … #define TCS3472_AILT … #define TCS3472_AIHT … #define TCS3472_PERS … #define TCS3472_CONFIG … #define TCS3472_CONTROL … #define TCS3472_ID … #define TCS3472_STATUS … #define TCS3472_CDATA … #define TCS3472_RDATA … #define TCS3472_GDATA … #define TCS3472_BDATA … #define TCS3472_STATUS_AINT … #define TCS3472_STATUS_AVALID … #define TCS3472_ENABLE_AIEN … #define TCS3472_ENABLE_AEN … #define TCS3472_ENABLE_PON … #define TCS3472_CONTROL_AGAIN_MASK … struct tcs3472_data { … }; static const struct iio_event_spec tcs3472_events[] = …; #define TCS3472_CHANNEL(_color, _si, _addr) … static const int tcs3472_agains[] = …; static const struct iio_chan_spec tcs3472_channels[] = …; static int tcs3472_req_data(struct tcs3472_data *data) { … } static int tcs3472_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int tcs3472_write_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } /* * Translation from APERS field value to the number of consecutive out-of-range * clear channel values before an interrupt is generated */ static const int tcs3472_intr_pers[] = …; static int tcs3472_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 tcs3472_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 tcs3472_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 tcs3472_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 tcs3472_event_handler(int irq, void *priv) { … } static irqreturn_t tcs3472_trigger_handler(int irq, void *p) { … } static ssize_t tcs3472_show_int_time_available(struct device *dev, struct device_attribute *attr, char *buf) { … } static IIO_CONST_ATTR(calibscale_available, "1 4 16 60"); static IIO_DEV_ATTR_INT_TIME_AVAIL(tcs3472_show_int_time_available); static struct attribute *tcs3472_attributes[] = …; static const struct attribute_group tcs3472_attribute_group = …; static const struct iio_info tcs3472_info = …; static int tcs3472_probe(struct i2c_client *client) { … } static int tcs3472_powerdown(struct tcs3472_data *data) { … } static void tcs3472_remove(struct i2c_client *client) { … } static int tcs3472_suspend(struct device *dev) { … } static int tcs3472_resume(struct device *dev) { … } static DEFINE_SIMPLE_DEV_PM_OPS(tcs3472_pm_ops, tcs3472_suspend, tcs3472_resume); static const struct i2c_device_id tcs3472_id[] = …; MODULE_DEVICE_TABLE(i2c, tcs3472_id); static struct i2c_driver tcs3472_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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