// SPDX-License-Identifier: GPL-2.0 // TI LP50XX LED chip family driver // Copyright (C) 2018-20 Texas Instruments Incorporated - https://www.ti.com/ #include <linux/gpio/consumer.h> #include <linux/i2c.h> #include <linux/init.h> #include <linux/leds.h> #include <linux/mod_devicetable.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #include <linux/slab.h> #include <uapi/linux/uleds.h> #include <linux/led-class-multicolor.h> #include "leds.h" #define LP50XX_DEV_CFG0 … #define LP50XX_DEV_CFG1 … #define LP50XX_LED_CFG0 … /* LP5009 and LP5012 registers */ #define LP5012_BNK_BRT … #define LP5012_BNKA_CLR … #define LP5012_BNKB_CLR … #define LP5012_BNKC_CLR … #define LP5012_LED0_BRT … #define LP5012_OUT0_CLR … #define LP5012_RESET … /* LP5018 and LP5024 registers */ #define LP5024_BNK_BRT … #define LP5024_BNKA_CLR … #define LP5024_BNKB_CLR … #define LP5024_BNKC_CLR … #define LP5024_LED0_BRT … #define LP5024_OUT0_CLR … #define LP5024_RESET … /* LP5030 and LP5036 registers */ #define LP5036_LED_CFG1 … #define LP5036_BNK_BRT … #define LP5036_BNKA_CLR … #define LP5036_BNKB_CLR … #define LP5036_BNKC_CLR … #define LP5036_LED0_BRT … #define LP5036_OUT0_CLR … #define LP5036_RESET … #define LP50XX_SW_RESET … #define LP50XX_CHIP_EN … /* There are 3 LED outputs per bank */ #define LP50XX_LEDS_PER_MODULE … #define LP5009_MAX_LED_MODULES … #define LP5012_MAX_LED_MODULES … #define LP5018_MAX_LED_MODULES … #define LP5024_MAX_LED_MODULES … #define LP5030_MAX_LED_MODULES … #define LP5036_MAX_LED_MODULES … static const struct reg_default lp5012_reg_defs[] = …; static const struct reg_default lp5024_reg_defs[] = …; static const struct reg_default lp5036_reg_defs[] = …; static const struct regmap_config lp5012_regmap_config = …; static const struct regmap_config lp5024_regmap_config = …; static const struct regmap_config lp5036_regmap_config = …; enum lp50xx_model { … }; /** * struct lp50xx_chip_info - * @lp50xx_regmap_config: regmap register configuration * @model_id: LED device model * @max_modules: total number of supported LED modules * @num_leds: number of LED outputs available on the device * @led_brightness0_reg: first brightness register of the device * @mix_out0_reg: first color mix register of the device * @bank_brt_reg: bank brightness register * @bank_mix_reg: color mix register * @reset_reg: device reset register */ struct lp50xx_chip_info { … }; static const struct lp50xx_chip_info lp50xx_chip_info_tbl[] = …; struct lp50xx_led { … }; /** * struct lp50xx - * @enable_gpio: hardware enable gpio * @regulator: LED supply regulator pointer * @client: pointer to the I2C client * @regmap: device register map * @dev: pointer to the devices device struct * @lock: lock for reading/writing the device * @chip_info: chip specific information (ie num_leds) * @leds: array of LED strings */ struct lp50xx { … }; static struct lp50xx_led *mcled_cdev_to_led(struct led_classdev_mc *mc_cdev) { … } static int lp50xx_brightness_set(struct led_classdev *cdev, enum led_brightness brightness) { … } static int lp50xx_set_banks(struct lp50xx *priv, u32 led_banks[]) { … } static int lp50xx_reset(struct lp50xx *priv) { … } static int lp50xx_enable_disable(struct lp50xx *priv, int enable_disable) { … } static int lp50xx_probe_leds(struct fwnode_handle *child, struct lp50xx *priv, struct lp50xx_led *led, int num_leds) { … } static int lp50xx_probe_dt(struct lp50xx *priv) { … } static int lp50xx_probe(struct i2c_client *client) { … } static void lp50xx_remove(struct i2c_client *client) { … } static const struct i2c_device_id lp50xx_id[] = …; MODULE_DEVICE_TABLE(i2c, lp50xx_id); static const struct of_device_id of_lp50xx_leds_match[] = …; MODULE_DEVICE_TABLE(of, of_lp50xx_leds_match); static struct i2c_driver lp50xx_driver = …; module_i2c_driver(…) …; MODULE_DESCRIPTION(…) …; MODULE_AUTHOR(…) …; MODULE_LICENSE(…) …;
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