// SPDX-License-Identifier: GPL-2.0-only /* * LP5521 LED chip driver. * * Copyright (C) 2010 Nokia Corporation * Copyright (C) 2012 Texas Instruments * * Contact: Samu Onkalo <[email protected]> * Milo(Woogyom) Kim <[email protected]> */ #include <linux/cleanup.h> #include <linux/delay.h> #include <linux/firmware.h> #include <linux/i2c.h> #include <linux/leds.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/platform_data/leds-lp55xx.h> #include <linux/slab.h> #include <linux/of.h> #include "leds-lp55xx-common.h" #define LP5521_MAX_LEDS … #define LP5521_CMD_DIRECT … /* Registers */ #define LP5521_REG_ENABLE … #define LP5521_REG_OP_MODE … #define LP5521_REG_R_PWM … #define LP5521_REG_G_PWM … #define LP5521_REG_B_PWM … #define LP5521_REG_R_CURRENT … #define LP5521_REG_G_CURRENT … #define LP5521_REG_B_CURRENT … #define LP5521_REG_CONFIG … #define LP5521_REG_STATUS … #define LP5521_REG_RESET … #define LP5521_REG_R_PROG_MEM … #define LP5521_REG_G_PROG_MEM … #define LP5521_REG_B_PROG_MEM … /* Base register to set LED current */ #define LP5521_REG_LED_CURRENT_BASE … /* Base register to set the brightness */ #define LP5521_REG_LED_PWM_BASE … /* Bits in ENABLE register */ #define LP5521_MASTER_ENABLE … #define LP5521_LOGARITHMIC_PWM … #define LP5521_EXEC_RUN … #define LP5521_ENABLE_DEFAULT … #define LP5521_ENABLE_RUN_PROGRAM … /* CONFIG register */ #define LP5521_PWM_HF … #define LP5521_PWRSAVE_EN … #define LP5521_CP_MODE_MASK … #define LP5521_CP_MODE_SHIFT … #define LP5521_R_TO_BATT … #define LP5521_CLK_INT … #define LP5521_DEFAULT_CFG … /* Status */ #define LP5521_EXT_CLK_USED … /* default R channel current register value */ #define LP5521_REG_R_CURR_DEFAULT … /* Reset register value */ #define LP5521_RESET … static inline void lp5521_wait_opmode_done(void) { … } static inline void lp5521_wait_enable_done(void) { … } static void lp5521_run_engine(struct lp55xx_chip *chip, bool start) { … } static int lp5521_post_init_device(struct lp55xx_chip *chip) { … } static int lp5521_run_selftest(struct lp55xx_chip *chip, char *buf) { … } static ssize_t lp5521_selftest(struct device *dev, struct device_attribute *attr, char *buf) { … } /* device attributes */ LP55XX_DEV_ATTR_ENGINE_MODE(…); LP55XX_DEV_ATTR_ENGINE_MODE(…); LP55XX_DEV_ATTR_ENGINE_MODE(…); LP55XX_DEV_ATTR_ENGINE_LOAD(…); LP55XX_DEV_ATTR_ENGINE_LOAD(…); LP55XX_DEV_ATTR_ENGINE_LOAD(…); static LP55XX_DEV_ATTR_RO(selftest, lp5521_selftest); static struct attribute *lp5521_attributes[] = …; static const struct attribute_group lp5521_group = …; /* Chip specific configurations */ static struct lp55xx_device_config lp5521_cfg = …; static const struct i2c_device_id lp5521_id[] = …; MODULE_DEVICE_TABLE(i2c, lp5521_id); static const struct of_device_id of_lp5521_leds_match[] = …; MODULE_DEVICE_TABLE(of, of_lp5521_leds_match); static struct i2c_driver lp5521_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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