// SPDX-License-Identifier: GPL-2.0-only /* * This file is part of the APDS990x 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/regulator/consumer.h> #include <linux/pm_runtime.h> #include <linux/delay.h> #include <linux/wait.h> #include <linux/slab.h> #include <linux/platform_data/apds990x.h> /* Register map */ #define APDS990X_ENABLE … #define APDS990X_ATIME … #define APDS990X_PTIME … #define APDS990X_WTIME … #define APDS990X_AILTL … #define APDS990X_AILTH … #define APDS990X_AIHTL … #define APDS990X_AIHTH … #define APDS990X_PILTL … #define APDS990X_PILTH … #define APDS990X_PIHTL … #define APDS990X_PIHTH … #define APDS990X_PERS … #define APDS990X_CONFIG … #define APDS990X_PPCOUNT … #define APDS990X_CONTROL … #define APDS990X_REV … #define APDS990X_ID … #define APDS990X_STATUS … #define APDS990X_CDATAL … #define APDS990X_CDATAH … #define APDS990X_IRDATAL … #define APDS990X_IRDATAH … #define APDS990X_PDATAL … #define APDS990X_PDATAH … /* Control */ #define APDS990X_MAX_AGAIN … /* Enable register */ #define APDS990X_EN_PIEN … #define APDS990X_EN_AIEN … #define APDS990X_EN_WEN … #define APDS990X_EN_PEN … #define APDS990X_EN_AEN … #define APDS990X_EN_PON … #define APDS990X_EN_DISABLE_ALL … /* Status register */ #define APDS990X_ST_PINT … #define APDS990X_ST_AINT … /* I2C access types */ #define APDS990x_CMD_TYPE_MASK … #define APDS990x_CMD_TYPE_RB … #define APDS990x_CMD_TYPE_INC … #define APDS990x_CMD_TYPE_SPE … #define APDS990x_ADDR_SHIFT … #define APDS990x_CMD … /* Interrupt ack commands */ #define APDS990X_INT_ACK_ALS … #define APDS990X_INT_ACK_PS … #define APDS990X_INT_ACK_BOTH … /* ptime */ #define APDS990X_PTIME_DEFAULT … /* wtime */ #define APDS990X_WTIME_DEFAULT … #define APDS990X_TIME_TO_ADC … /* Persistence */ #define APDS990X_APERS_SHIFT … #define APDS990X_PPERS_SHIFT … /* Supported ID:s */ #define APDS990X_ID_0 … #define APDS990X_ID_4 … #define APDS990X_ID_29 … /* pgain and pdiode settings */ #define APDS_PGAIN_1X … #define APDS_PDIODE_IR … #define APDS990X_LUX_OUTPUT_SCALE … /* Reverse chip factors for threshold calculation */ struct reverse_factors { … }; struct apds990x_chip { … }; #define APDS_CALIB_SCALER … #define APDS_LUX_NEUTRAL_CALIB_VALUE … #define APDS_PROX_NEUTRAL_CALIB_VALUE … #define APDS_PROX_DEF_THRES … #define APDS_PROX_HYSTERESIS … #define APDS_LUX_DEF_THRES_HI … #define APDS_LUX_DEF_THRES_LO … #define APDS_DEFAULT_PROX_PERS … #define APDS_TIMEOUT … #define APDS_STARTUP_DELAY … #define APDS_RANGE … #define APDS_PROX_RANGE … #define APDS_LUX_GAIN_LO_LIMIT … #define APDS_LUX_GAIN_LO_LIMIT_STRICT … #define TIMESTEP … #define TIME_STEP_SCALER … #define APDS_LUX_AVERAGING_TIME … #define APDS_LUX_DEFAULT_RATE … static const u8 again[] = …; /* ALS gain steps */ /* Following two tables must match i.e 10Hz rate means 1 as persistence value */ static const u16 arates_hz[] = …; static const u8 apersis[] = …; /* Regulators */ static const char reg_vcc[] = …; static const char reg_vled[] = …; static int apds990x_read_byte(struct apds990x_chip *chip, u8 reg, u8 *data) { … } static int apds990x_read_word(struct apds990x_chip *chip, u8 reg, u16 *data) { … } static int apds990x_write_byte(struct apds990x_chip *chip, u8 reg, u8 data) { … } static int apds990x_write_word(struct apds990x_chip *chip, u8 reg, u16 data) { … } static int apds990x_mode_on(struct apds990x_chip *chip) { … } static u16 apds990x_lux_to_threshold(struct apds990x_chip *chip, u32 lux) { … } static inline int apds990x_set_atime(struct apds990x_chip *chip, u32 time_ms) { … } /* Called always with mutex locked */ static int apds990x_refresh_pthres(struct apds990x_chip *chip, int data) { … } /* Called always with mutex locked */ static int apds990x_refresh_athres(struct apds990x_chip *chip) { … } /* Called always with mutex locked */ static void apds990x_force_a_refresh(struct apds990x_chip *chip) { … } /* Called always with mutex locked */ static void apds990x_force_p_refresh(struct apds990x_chip *chip) { … } /* Called always with mutex locked */ static int apds990x_calc_again(struct apds990x_chip *chip) { … } /* Called always with mutex locked */ static int apds990x_get_lux(struct apds990x_chip *chip, int clear, int ir) { … } static int apds990x_ack_int(struct apds990x_chip *chip, u8 mode) { … } static irqreturn_t apds990x_irq(int irq, void *data) { … } static int apds990x_configure(struct apds990x_chip *chip) { … } static int apds990x_detect(struct apds990x_chip *chip) { … } #ifdef CONFIG_PM static int apds990x_chip_on(struct apds990x_chip *chip) { … } #endif static int apds990x_chip_off(struct apds990x_chip *chip) { … } static ssize_t apds990x_lux_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(lux0_input, S_IRUGO, apds990x_lux_show, NULL); static ssize_t apds990x_lux_range_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(lux0_sensor_range, S_IRUGO, apds990x_lux_range_show, NULL); static ssize_t apds990x_lux_calib_format_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(lux0_calibscale_default, S_IRUGO, apds990x_lux_calib_format_show, NULL); static ssize_t apds990x_lux_calib_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_lux_calib_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(lux0_calibscale, S_IRUGO | S_IWUSR, apds990x_lux_calib_show, apds990x_lux_calib_store); static ssize_t apds990x_rate_avail(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_rate_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static int apds990x_set_arate(struct apds990x_chip *chip, int rate) { … } static ssize_t apds990x_rate_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(lux0_rate_avail, S_IRUGO, apds990x_rate_avail, NULL); static DEVICE_ATTR(lux0_rate, S_IRUGO | S_IWUSR, apds990x_rate_show, apds990x_rate_store); static ssize_t apds990x_prox_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(prox0_raw, S_IRUGO, apds990x_prox_show, NULL); static ssize_t apds990x_prox_range_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(prox0_sensor_range, S_IRUGO, apds990x_prox_range_show, NULL); static ssize_t apds990x_prox_enable_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_prox_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(prox0_raw_en, S_IRUGO | S_IWUSR, apds990x_prox_enable_show, apds990x_prox_enable_store); static const char *reporting_modes[] = …; static ssize_t apds990x_prox_reporting_mode_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_prox_reporting_mode_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(prox0_reporting_mode, S_IRUGO | S_IWUSR, apds990x_prox_reporting_mode_show, apds990x_prox_reporting_mode_store); static ssize_t apds990x_prox_reporting_avail_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(prox0_reporting_mode_avail, S_IRUGO | S_IWUSR, apds990x_prox_reporting_avail_show, NULL); static ssize_t apds990x_lux_thresh_above_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_lux_thresh_below_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_set_lux_thresh(struct apds990x_chip *chip, u32 *target, const char *buf) { … } static ssize_t apds990x_lux_thresh_above_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static ssize_t apds990x_lux_thresh_below_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(lux0_thresh_above_value, S_IRUGO | S_IWUSR, apds990x_lux_thresh_above_show, apds990x_lux_thresh_above_store); static DEVICE_ATTR(lux0_thresh_below_value, S_IRUGO | S_IWUSR, apds990x_lux_thresh_below_show, apds990x_lux_thresh_below_store); static ssize_t apds990x_prox_threshold_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_prox_threshold_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(prox0_thresh_above_value, S_IRUGO | S_IWUSR, apds990x_prox_threshold_show, apds990x_prox_threshold_store); static ssize_t apds990x_power_state_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static ssize_t apds990x_power_state_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t len) { … } static DEVICE_ATTR(power_state, S_IRUGO | S_IWUSR, apds990x_power_state_show, apds990x_power_state_store); static ssize_t apds990x_chip_id_show(struct device *dev, struct device_attribute *attr, char *buf) { … } static DEVICE_ATTR(chip_id, S_IRUGO, apds990x_chip_id_show, NULL); static struct attribute *sysfs_attrs_ctrl[] = …; static const struct attribute_group apds990x_attribute_group[] = …; static int apds990x_probe(struct i2c_client *client) { … } static void apds990x_remove(struct i2c_client *client) { … } #ifdef CONFIG_PM_SLEEP static int apds990x_suspend(struct device *dev) { … } static int apds990x_resume(struct device *dev) { … } #endif #ifdef CONFIG_PM static int apds990x_runtime_suspend(struct device *dev) { … } static int apds990x_runtime_resume(struct device *dev) { … } #endif static const struct i2c_device_id apds990x_id[] = …; MODULE_DEVICE_TABLE(i2c, apds990x_id); static const struct dev_pm_ops apds990x_pm_ops = …; static struct i2c_driver apds990x_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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