// SPDX-License-Identifier: GPL-2.0-or-later /* * lm3533-als.c -- LM3533 Ambient Light Sensor driver * * Copyright (C) 2011-2012 Texas Instruments * * Author: Johan Hovold <[email protected]> */ #include <linux/atomic.h> #include <linux/fs.h> #include <linux/interrupt.h> #include <linux/io.h> #include <linux/iio/events.h> #include <linux/iio/iio.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/mfd/core.h> #include <linux/platform_device.h> #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/mfd/lm3533.h> #define LM3533_ALS_RESISTOR_MIN … #define LM3533_ALS_RESISTOR_MAX … #define LM3533_ALS_CHANNEL_CURRENT_MAX … #define LM3533_ALS_THRESH_MAX … #define LM3533_ALS_ZONE_MAX … #define LM3533_REG_ALS_RESISTOR_SELECT … #define LM3533_REG_ALS_CONF … #define LM3533_REG_ALS_ZONE_INFO … #define LM3533_REG_ALS_READ_ADC_RAW … #define LM3533_REG_ALS_READ_ADC_AVERAGE … #define LM3533_REG_ALS_BOUNDARY_BASE … #define LM3533_REG_ALS_TARGET_BASE … #define LM3533_ALS_ENABLE_MASK … #define LM3533_ALS_INPUT_MODE_MASK … #define LM3533_ALS_INT_ENABLE_MASK … #define LM3533_ALS_ZONE_SHIFT … #define LM3533_ALS_ZONE_MASK … #define LM3533_ALS_FLAG_INT_ENABLED … struct lm3533_als { … }; static int lm3533_als_get_adc(struct iio_dev *indio_dev, bool average, int *adc) { … } static int _lm3533_als_get_zone(struct iio_dev *indio_dev, u8 *zone) { … } static int lm3533_als_get_zone(struct iio_dev *indio_dev, u8 *zone) { … } /* * channel output channel 0..2 * zone zone 0..4 */ static inline u8 lm3533_als_get_target_reg(unsigned channel, unsigned zone) { … } static int lm3533_als_get_target(struct iio_dev *indio_dev, unsigned channel, unsigned zone, u8 *val) { … } static int lm3533_als_set_target(struct iio_dev *indio_dev, unsigned channel, unsigned zone, u8 val) { … } static int lm3533_als_get_current(struct iio_dev *indio_dev, unsigned channel, int *val) { … } static int lm3533_als_read_raw(struct iio_dev *indio_dev, struct iio_chan_spec const *chan, int *val, int *val2, long mask) { … } #define CHANNEL_CURRENT(_channel) … static const struct iio_chan_spec lm3533_als_channels[] = …; static irqreturn_t lm3533_als_isr(int irq, void *dev_id) { … } static int lm3533_als_set_int_mode(struct iio_dev *indio_dev, int enable) { … } static int lm3533_als_get_int_mode(struct iio_dev *indio_dev, int *enable) { … } static inline u8 lm3533_als_get_threshold_reg(unsigned nr, bool raising) { … } static int lm3533_als_get_threshold(struct iio_dev *indio_dev, unsigned nr, bool raising, u8 *val) { … } static int lm3533_als_set_threshold(struct iio_dev *indio_dev, unsigned nr, bool raising, u8 val) { … } static int lm3533_als_get_hysteresis(struct iio_dev *indio_dev, unsigned nr, u8 *val) { … } static ssize_t show_thresh_either_en(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t store_thresh_either_en(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static ssize_t show_zone(struct device *dev, struct device_attribute *attr, char *buf) { … } enum lm3533_als_attribute_type { … }; struct lm3533_als_attribute { … }; static inline struct lm3533_als_attribute * to_lm3533_als_attr(struct device_attribute *attr) { … } static ssize_t show_als_attr(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t store_als_attr(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } #define ALS_ATTR(_name, _mode, _show, _store, _type, _val1, _val2) … #define LM3533_ALS_ATTR(_name, _mode, _show, _store, _type, _val1, _val2) … #define ALS_TARGET_ATTR_RW(_channel, _zone) … /* * ALS output current values (ALS mapper targets) * * out_current[0-2]_current[0-4]_raw 0-255 */ static ALS_TARGET_ATTR_RW(0, 0); static ALS_TARGET_ATTR_RW(0, 1); static ALS_TARGET_ATTR_RW(0, 2); static ALS_TARGET_ATTR_RW(0, 3); static ALS_TARGET_ATTR_RW(0, 4); static ALS_TARGET_ATTR_RW(1, 0); static ALS_TARGET_ATTR_RW(1, 1); static ALS_TARGET_ATTR_RW(1, 2); static ALS_TARGET_ATTR_RW(1, 3); static ALS_TARGET_ATTR_RW(1, 4); static ALS_TARGET_ATTR_RW(2, 0); static ALS_TARGET_ATTR_RW(2, 1); static ALS_TARGET_ATTR_RW(2, 2); static ALS_TARGET_ATTR_RW(2, 3); static ALS_TARGET_ATTR_RW(2, 4); #define ALS_THRESH_FALLING_ATTR_RW(_nr) … #define ALS_THRESH_RAISING_ATTR_RW(_nr) … /* * ALS Zone thresholds (boundaries) * * in_illuminance0_thresh[0-3]_falling_value 0-255 * in_illuminance0_thresh[0-3]_raising_value 0-255 */ static ALS_THRESH_FALLING_ATTR_RW(0); static ALS_THRESH_FALLING_ATTR_RW(1); static ALS_THRESH_FALLING_ATTR_RW(2); static ALS_THRESH_FALLING_ATTR_RW(3); static ALS_THRESH_RAISING_ATTR_RW(0); static ALS_THRESH_RAISING_ATTR_RW(1); static ALS_THRESH_RAISING_ATTR_RW(2); static ALS_THRESH_RAISING_ATTR_RW(3); #define ALS_HYSTERESIS_ATTR_RO(_nr) … /* * ALS Zone threshold hysteresis * * threshY_hysteresis = threshY_raising - threshY_falling * * in_illuminance0_thresh[0-3]_hysteresis 0-255 * in_illuminance0_thresh[0-3]_hysteresis 0-255 */ static ALS_HYSTERESIS_ATTR_RO(0); static ALS_HYSTERESIS_ATTR_RO(1); static ALS_HYSTERESIS_ATTR_RO(2); static ALS_HYSTERESIS_ATTR_RO(3); #define ILLUMINANCE_ATTR_RO(_name) … #define ILLUMINANCE_ATTR_RW(_name) … /* * ALS Zone threshold-event enable * * in_illuminance0_thresh_either_en 0,1 */ static ILLUMINANCE_ATTR_RW(thresh_either_en); /* * ALS Current Zone * * in_illuminance0_zone 0-4 */ static ILLUMINANCE_ATTR_RO(zone); static struct attribute *lm3533_als_event_attributes[] = …; static const struct attribute_group lm3533_als_event_attribute_group = …; static struct attribute *lm3533_als_attributes[] = …; static const struct attribute_group lm3533_als_attribute_group = …; static int lm3533_als_set_input_mode(struct lm3533_als *als, bool pwm_mode) { … } static int lm3533_als_set_resistor(struct lm3533_als *als, u8 val) { … } static int lm3533_als_setup(struct lm3533_als *als, struct lm3533_als_platform_data *pdata) { … } static int lm3533_als_setup_irq(struct lm3533_als *als, void *dev) { … } static int lm3533_als_enable(struct lm3533_als *als) { … } static int lm3533_als_disable(struct lm3533_als *als) { … } static const struct iio_info lm3533_als_info = …; static int lm3533_als_probe(struct platform_device *pdev) { … } static void lm3533_als_remove(struct platform_device *pdev) { … } static struct platform_driver lm3533_als_driver = …; module_platform_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …; MODULE_ALIAS(…) …;
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