// SPDX-License-Identifier: GPL-2.0-only /* * opt3001.c - Texas Instruments OPT3001 Light Sensor * * Copyright (C) 2014 Texas Instruments Incorporated - https://www.ti.com * * Author: Andreas Dannenberg <[email protected]> * Based on previous work from: Felipe Balbi <[email protected]> */ #include <linux/bitops.h> #include <linux/delay.h> #include <linux/device.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/irq.h> #include <linux/kernel.h> #include <linux/module.h> #include <linux/mod_devicetable.h> #include <linux/mutex.h> #include <linux/slab.h> #include <linux/types.h> #include <linux/iio/events.h> #include <linux/iio/iio.h> #include <linux/iio/sysfs.h> #define OPT3001_RESULT … #define OPT3001_CONFIGURATION … #define OPT3001_LOW_LIMIT … #define OPT3001_HIGH_LIMIT … #define OPT3001_MANUFACTURER_ID … #define OPT3001_DEVICE_ID … #define OPT3001_CONFIGURATION_RN_MASK … #define OPT3001_CONFIGURATION_RN_AUTO … #define OPT3001_CONFIGURATION_CT … #define OPT3001_CONFIGURATION_M_MASK … #define OPT3001_CONFIGURATION_M_SHUTDOWN … #define OPT3001_CONFIGURATION_M_SINGLE … #define OPT3001_CONFIGURATION_M_CONTINUOUS … #define OPT3001_CONFIGURATION_OVF … #define OPT3001_CONFIGURATION_CRF … #define OPT3001_CONFIGURATION_FH … #define OPT3001_CONFIGURATION_FL … #define OPT3001_CONFIGURATION_L … #define OPT3001_CONFIGURATION_POL … #define OPT3001_CONFIGURATION_ME … #define OPT3001_CONFIGURATION_FC_MASK … /* The end-of-conversion enable is located in the low-limit register */ #define OPT3001_LOW_LIMIT_EOC_ENABLE … #define OPT3001_REG_EXPONENT(n) … #define OPT3001_REG_MANTISSA(n) … #define OPT3001_INT_TIME_LONG … #define OPT3001_INT_TIME_SHORT … /* * Time to wait for conversion result to be ready. The device datasheet * sect. 6.5 states results are ready after total integration time plus 3ms. * This results in worst-case max values of 113ms or 883ms, respectively. * Add some slack to be on the safe side. */ #define OPT3001_RESULT_READY_SHORT … #define OPT3001_RESULT_READY_LONG … struct opt3001 { … }; struct opt3001_scale { … }; static const struct opt3001_scale opt3001_scales[] = …; static int opt3001_find_scale(const struct opt3001 *opt, int val, int val2, u8 *exponent) { … } static void opt3001_to_iio_ret(struct opt3001 *opt, u8 exponent, u16 mantissa, int *val, int *val2) { … } static void opt3001_set_mode(struct opt3001 *opt, u16 *reg, u16 mode) { … } static IIO_CONST_ATTR_INT_TIME_AVAIL("0.1 0.8"); static struct attribute *opt3001_attributes[] = …; static const struct attribute_group opt3001_attribute_group = …; static const struct iio_event_spec opt3001_event_spec[] = …; static const struct iio_chan_spec opt3001_channels[] = …; static int opt3001_get_lux(struct opt3001 *opt, int *val, int *val2) { … } static int opt3001_get_int_time(struct opt3001 *opt, int *val, int *val2) { … } static int opt3001_set_int_time(struct opt3001 *opt, int time) { … } static int opt3001_read_raw(struct iio_dev *iio, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } static int opt3001_write_raw(struct iio_dev *iio, struct iio_chan_spec const *chan, int val, int val2, long mask) { … } static int opt3001_read_event_value(struct iio_dev *iio, 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 opt3001_write_event_value(struct iio_dev *iio, 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 opt3001_read_event_config(struct iio_dev *iio, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir) { … } static int opt3001_write_event_config(struct iio_dev *iio, const struct iio_chan_spec *chan, enum iio_event_type type, enum iio_event_direction dir, int state) { … } static const struct iio_info opt3001_info = …; static int opt3001_read_id(struct opt3001 *opt) { … } static int opt3001_configure(struct opt3001 *opt) { … } static irqreturn_t opt3001_irq(int irq, void *_iio) { … } static int opt3001_probe(struct i2c_client *client) { … } static void opt3001_remove(struct i2c_client *client) { … } static const struct i2c_device_id opt3001_id[] = …; MODULE_DEVICE_TABLE(i2c, opt3001_id); static const struct of_device_id opt3001_of_match[] = …; MODULE_DEVICE_TABLE(of, opt3001_of_match); static struct i2c_driver opt3001_driver = …; module_i2c_driver(…) …; MODULE_LICENSE(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …;
Codebase Browser
linux