// SPDX-License-Identifier: GPL-2.0-only /* * This file is part of the ROHM BH1770GLC / OSRAM SFH7770 sensor driver. * Chip is combined proximity and ambient light sensor. * * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). * * Contact: Samu Onkalo <[email protected]> */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/i2c.h> #include <linux/interrupt.h> #include <linux/mutex.h> #include <linux/platform_data/bh1770glc.h> #include <linux/regulator/consumer.h> #include <linux/pm_runtime.h> #include <linux/workqueue.h> #include <linux/delay.h> #include <linux/wait.h> #include <linux/slab.h> #define BH1770_ALS_CONTROL … #define BH1770_PS_CONTROL … #define BH1770_I_LED … #define BH1770_I_LED3 … #define BH1770_ALS_PS_MEAS … #define BH1770_PS_MEAS_RATE … #define BH1770_ALS_MEAS_RATE … #define BH1770_PART_ID … #define BH1770_MANUFACT_ID … #define BH1770_ALS_DATA_0 … #define BH1770_ALS_DATA_1 … #define BH1770_ALS_PS_STATUS … #define BH1770_PS_DATA_LED1 … #define BH1770_PS_DATA_LED2 … #define BH1770_PS_DATA_LED3 … #define BH1770_INTERRUPT … #define BH1770_PS_TH_LED1 … #define BH1770_PS_TH_LED2 … #define BH1770_PS_TH_LED3 … #define BH1770_ALS_TH_UP_0 … #define BH1770_ALS_TH_UP_1 … #define BH1770_ALS_TH_LOW_0 … #define BH1770_ALS_TH_LOW_1 … /* MANUFACT_ID */ #define BH1770_MANUFACT_ROHM … #define BH1770_MANUFACT_OSRAM … /* PART_ID */ #define BH1770_PART … #define BH1770_PART_MASK … #define BH1770_REV_MASK … #define BH1770_REV_SHIFT … #define BH1770_REV_0 … #define BH1770_REV_1 … /* Operating modes for both */ #define BH1770_STANDBY … #define BH1770_FORCED … #define BH1770_STANDALONE … #define BH1770_SWRESET … #define BH1770_PS_TRIG_MEAS … #define BH1770_ALS_TRIG_MEAS … /* Interrupt control */ #define BH1770_INT_OUTPUT_MODE … #define BH1770_INT_POLARITY … #define BH1770_INT_ALS_ENA … #define BH1770_INT_PS_ENA … /* Interrupt status */ #define BH1770_INT_LED1_DATA … #define BH1770_INT_LED1_INT … #define BH1770_INT_LED2_DATA … #define BH1770_INT_LED2_INT … #define BH1770_INT_LED3_DATA … #define BH1770_INT_LED3_INT … #define BH1770_INT_LEDS_INT … #define BH1770_INT_ALS_DATA … #define BH1770_INT_ALS_INT … /* Led channels */ #define BH1770_LED1 … #define BH1770_DISABLE … #define BH1770_ENABLE … #define BH1770_PROX_CHANNELS … #define BH1770_LUX_DEFAULT_RATE … #define BH1770_PROX_DEFAULT_RATE … #define BH1770_PROX_DEF_RATE_THRESH … #define BH1770_STARTUP_DELAY … #define BH1770_RESET_TIME … #define BH1770_TIMEOUT … #define BH1770_LUX_RANGE … #define BH1770_PROX_RANGE … #define BH1770_COEF_SCALER … #define BH1770_CALIB_SCALER … #define BH1770_LUX_NEUTRAL_CALIB_VALUE … #define BH1770_LUX_DEF_THRES … #define BH1770_PROX_DEF_THRES … #define BH1770_PROX_DEF_ABS_THRES … #define BH1770_DEFAULT_PERSISTENCE … #define BH1770_PROX_MAX_PERSISTENCE … #define BH1770_LUX_GA_SCALE … #define BH1770_LUX_CF_SCALE … #define BH1770_NEUTRAL_CF … #define BH1770_LUX_CORR_SCALE … #define PROX_ABOVE_THRESHOLD … #define PROX_BELOW_THRESHOLD … #define PROX_IGNORE_LUX_LIMIT … struct bh1770_chip { … }; static const char reg_vcc[] = …; static const char reg_vleds[] = …; /* * Supported stand alone rates in ms from chip data sheet * {10, 20, 30, 40, 70, 100, 200, 500, 1000, 2000}; */ static const s16 prox_rates_hz[] = …; static const s16 prox_rates_ms[] = …; /* * Supported stand alone rates in ms from chip data sheet * {100, 200, 500, 1000, 2000}; */ static const s16 lux_rates_hz[] = …; /* * interrupt control functions are called while keeping chip->mutex * excluding module probe / remove */ static inline int bh1770_lux_interrupt_control(struct bh1770_chip *chip, int lux) { … } static inline int bh1770_prox_interrupt_control(struct bh1770_chip *chip, int ps) { … } /* chip->mutex is always kept here */ static int bh1770_lux_rate(struct bh1770_chip *chip, int rate_index) { … } static int bh1770_prox_rate(struct bh1770_chip *chip, int mode) { … } /* InfraredLED is controlled by the chip during proximity scanning */ static inline int bh1770_led_cfg(struct bh1770_chip *chip) { … } /* * Following two functions converts raw ps values from HW to normalized * values. Purpose is to compensate differences between different sensor * versions and variants so that result means about the same between * versions. */ static inline u8 bh1770_psraw_to_adjusted(struct bh1770_chip *chip, u8 psraw) { … } static inline u8 bh1770_psadjusted_to_raw(struct bh1770_chip *chip, u8 ps) { … } /* * Following two functions converts raw lux values from HW to normalized * values. Purpose is to compensate differences between different sensor * versions and variants so that result means about the same between * versions. Chip->mutex is kept when this is called. */ static int bh1770_prox_set_threshold(struct bh1770_chip *chip) { … } static inline u16 bh1770_lux_raw_to_adjusted(struct bh1770_chip *chip, u16 raw) { … } static inline u16 bh1770_lux_adjusted_to_raw(struct bh1770_chip *chip, u16 adjusted) { … } /* chip->mutex is kept when this is called */ static int bh1770_lux_update_thresholds(struct bh1770_chip *chip, u16 threshold_hi, u16 threshold_lo) { … } static int bh1770_lux_get_result(struct bh1770_chip *chip) { … } /* Calculate correction value which contains chip and device specific parts */ static u32 bh1770_get_corr_value(struct bh1770_chip *chip) { … } static int bh1770_lux_read_result(struct bh1770_chip *chip) { … } /* * Chip on / off functions are called while keeping mutex except probe * or remove phase */ static int bh1770_chip_on(struct bh1770_chip *chip) { … } static void bh1770_chip_off(struct bh1770_chip *chip) { … } /* chip->mutex is kept when this is called */ static int bh1770_prox_mode_control(struct bh1770_chip *chip) { … } /* chip->mutex is kept when this is called */ static int bh1770_prox_read_result(struct bh1770_chip *chip) { … } static int bh1770_detect(struct bh1770_chip *chip) { … } /* * This work is re-scheduled at every proximity interrupt. * If this work is running, it means that there hasn't been any * proximity interrupt in time. Situation is handled as no-proximity. * It would be nice to have low-threshold interrupt or interrupt * when measurement and hi-threshold are both 0. But neither of those exists. * This is a workaroud for missing HW feature. */ static void bh1770_prox_work(struct work_struct *work) { … } /* This is threaded irq handler */ static irqreturn_t bh1770_irq(int irq, void *data) { … } static ssize_t bh1770_power_state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t bh1770_power_state_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_lux_result_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_lux_range_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_prox_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t bh1770_prox_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_prox_result_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_prox_range_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_get_prox_rate_avail(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_get_prox_rate_above(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_get_prox_rate_below(struct device *dev, struct device_attribute *attr, char *buf) { … } static int bh1770_prox_rate_validate(int rate) { … } static ssize_t bh1770_set_prox_rate_above(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t bh1770_set_prox_rate_below(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t bh1770_get_prox_thres(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_set_prox_thres(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t bh1770_prox_persistence_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_prox_persistence_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static ssize_t bh1770_prox_abs_thres_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_prox_abs_thres_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static ssize_t bh1770_chip_id_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_lux_calib_default_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_lux_calib_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_lux_calib_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static ssize_t bh1770_get_lux_rate_avail(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_get_lux_rate(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_set_lux_rate(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { … } static ssize_t bh1770_get_lux_thresh_above(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_get_lux_thresh_below(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t bh1770_set_lux_thresh(struct bh1770_chip *chip, u16 *target, const char *buf) { … } static ssize_t bh1770_set_lux_thresh_above(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static ssize_t bh1770_set_lux_thresh_below(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(prox0_raw_en, S_IRUGO | S_IWUSR, bh1770_prox_enable_show, bh1770_prox_enable_store); static DEVICE_ATTR(prox0_thresh_above1_value, S_IRUGO | S_IWUSR, bh1770_prox_abs_thres_show, bh1770_prox_abs_thres_store); static DEVICE_ATTR(prox0_thresh_above0_value, S_IRUGO | S_IWUSR, bh1770_get_prox_thres, bh1770_set_prox_thres); static DEVICE_ATTR(prox0_raw, S_IRUGO, bh1770_prox_result_show, NULL); static DEVICE_ATTR(prox0_sensor_range, S_IRUGO, bh1770_prox_range_show, NULL); static DEVICE_ATTR(prox0_thresh_above_count, S_IRUGO | S_IWUSR, bh1770_prox_persistence_show, bh1770_prox_persistence_store); static DEVICE_ATTR(prox0_rate_above, S_IRUGO | S_IWUSR, bh1770_get_prox_rate_above, bh1770_set_prox_rate_above); static DEVICE_ATTR(prox0_rate_below, S_IRUGO | S_IWUSR, bh1770_get_prox_rate_below, bh1770_set_prox_rate_below); static DEVICE_ATTR(prox0_rate_avail, S_IRUGO, bh1770_get_prox_rate_avail, NULL); static DEVICE_ATTR(lux0_calibscale, S_IRUGO | S_IWUSR, bh1770_lux_calib_show, bh1770_lux_calib_store); static DEVICE_ATTR(lux0_calibscale_default, S_IRUGO, bh1770_lux_calib_default_show, NULL); static DEVICE_ATTR(lux0_input, S_IRUGO, bh1770_lux_result_show, NULL); static DEVICE_ATTR(lux0_sensor_range, S_IRUGO, bh1770_lux_range_show, NULL); static DEVICE_ATTR(lux0_rate, S_IRUGO | S_IWUSR, bh1770_get_lux_rate, bh1770_set_lux_rate); static DEVICE_ATTR(lux0_rate_avail, S_IRUGO, bh1770_get_lux_rate_avail, NULL); static DEVICE_ATTR(lux0_thresh_above_value, S_IRUGO | S_IWUSR, bh1770_get_lux_thresh_above, bh1770_set_lux_thresh_above); static DEVICE_ATTR(lux0_thresh_below_value, S_IRUGO | S_IWUSR, bh1770_get_lux_thresh_below, bh1770_set_lux_thresh_below); static DEVICE_ATTR(chip_id, S_IRUGO, bh1770_chip_id_show, NULL); static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR, bh1770_power_state_show, bh1770_power_state_store); static struct attribute *sysfs_attrs[] = …; static const struct attribute_group bh1770_attribute_group = …; static int bh1770_probe(struct i2c_client *client) { … } static void bh1770_remove(struct i2c_client *client) { … } #ifdef CONFIG_PM_SLEEP static int bh1770_suspend(struct device *dev) { … } static int bh1770_resume(struct device *dev) { … } #endif #ifdef CONFIG_PM static int bh1770_runtime_suspend(struct device *dev) { … } static int bh1770_runtime_resume(struct device *dev) { … } #endif static const struct i2c_device_id bh1770_id[] = …; MODULE_DEVICE_TABLE(i2c, bh1770_id); static const struct dev_pm_ops bh1770_pm_ops = …; static struct i2c_driver bh1770_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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