// SPDX-License-Identifier: GPL-2.0-only /* * Copyright 2015-16 Golden Delicious Computers * * Author: Nikolaus Schaller <[email protected]> * * LED driver for the IS31FL319{0,1,3,6,9} to drive 1, 3, 6 or 9 light * effect LEDs. */ #include <linux/err.h> #include <linux/i2c.h> #include <linux/leds.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/property.h> #include <linux/regmap.h> #include <linux/slab.h> #include <linux/delay.h> #include <linux/gpio/consumer.h> /* register numbers */ #define IS31FL319X_SHUTDOWN … /* registers for 3190, 3191 and 3193 */ #define IS31FL3190_BREATHING … #define IS31FL3190_LEDMODE … #define IS31FL3190_CURRENT … #define IS31FL3190_PWM(channel) … #define IS31FL3190_DATA_UPDATE … #define IS31FL3190_T0(channel) … #define IS31FL3190_T1T2(channel) … #define IS31FL3190_T3T4(channel) … #define IS31FL3190_TIME_UPDATE … #define IS31FL3190_LEDCONTROL … #define IS31FL3190_RESET … #define IS31FL3190_CURRENT_uA_MIN … #define IS31FL3190_CURRENT_uA_DEFAULT … #define IS31FL3190_CURRENT_uA_MAX … #define IS31FL3190_CURRENT_SHIFT … #define IS31FL3190_CURRENT_MASK … #define IS31FL3190_CURRENT_5_mA … #define IS31FL3190_CURRENT_10_mA … #define IS31FL3190_CURRENT_17dot5_mA … #define IS31FL3190_CURRENT_30_mA … #define IS31FL3190_CURRENT_42_mA … /* registers for 3196 and 3199 */ #define IS31FL3196_CTRL1 … #define IS31FL3196_CTRL2 … #define IS31FL3196_CONFIG1 … #define IS31FL3196_CONFIG2 … #define IS31FL3196_RAMP_MODE … #define IS31FL3196_BREATH_MARK … #define IS31FL3196_PWM(channel) … #define IS31FL3196_DATA_UPDATE … #define IS31FL3196_T0(channel) … #define IS31FL3196_T123_1 … #define IS31FL3196_T123_2 … #define IS31FL3196_T123_3 … #define IS31FL3196_T4(channel) … #define IS31FL3196_TIME_UPDATE … #define IS31FL3196_RESET … #define IS31FL3196_REG_CNT … #define IS31FL319X_MAX_LEDS … /* CS (Current Setting) in CONFIG2 register */ #define IS31FL3196_CONFIG2_CS_SHIFT … #define IS31FL3196_CONFIG2_CS_MASK … #define IS31FL3196_CONFIG2_CS_STEP_REF … #define IS31FL3196_CURRENT_uA_MIN … #define IS31FL3196_CURRENT_uA_MAX … #define IS31FL3196_CURRENT_uA_STEP … #define IS31FL3196_CURRENT_uA_DEFAULT … /* Audio gain in CONFIG2 register */ #define IS31FL3196_AUDIO_GAIN_DB_MAX … #define IS31FL3196_AUDIO_GAIN_DB_STEP … /* * regmap is used as a cache of chip's register space, * to avoid reading back brightness values from chip, * which is known to hang. */ struct is31fl319x_chip { … }; struct is31fl319x_chipdef { … }; static bool is31fl319x_readable_reg(struct device *dev, unsigned int reg) { … } static bool is31fl3190_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct reg_default is31fl3190_reg_defaults[] = …; static const struct regmap_config is31fl3190_regmap_config = …; static bool is31fl3196_volatile_reg(struct device *dev, unsigned int reg) { … } static const struct reg_default is31fl3196_reg_defaults[] = …; static const struct regmap_config is31fl3196_regmap_config = …; static int is31fl3190_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { … } static int is31fl3196_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { … } static const struct is31fl319x_chipdef is31fl3190_cdef = …; static const struct is31fl319x_chipdef is31fl3193_cdef = …; static const struct is31fl319x_chipdef is31fl3196_cdef = …; static const struct is31fl319x_chipdef is31fl3199_cdef = …; static const struct of_device_id of_is31fl319x_match[] = …; MODULE_DEVICE_TABLE(of, of_is31fl319x_match); static int is31fl319x_parse_child_fw(const struct device *dev, const struct fwnode_handle *child, struct is31fl319x_led *led, struct is31fl319x_chip *is31) { … } static int is31fl319x_parse_fw(struct device *dev, struct is31fl319x_chip *is31) { … } static inline int is31fl3190_microamp_to_cs(struct device *dev, u32 microamp) { … } static inline int is31fl3196_microamp_to_cs(struct device *dev, u32 microamp) { … } static inline int is31fl3196_db_to_gain(u32 dezibel) { … } static void is31f1319x_mutex_destroy(void *lock) { … } static int is31fl319x_probe(struct i2c_client *client) { … } /* * i2c-core (and modalias) requires that id_table be properly filled, * even though it is not used for DeviceTree based instantiation. */ static const struct i2c_device_id is31fl319x_id[] = …; MODULE_DEVICE_TABLE(i2c, is31fl319x_id); static struct i2c_driver is31fl319x_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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