// SPDX-License-Identifier: GPL-2.0-or-later /* * Kinetic KTD2026/7 RGB/White LED driver with I2C interface * * Copyright 2023 André Apitzsch <[email protected]> * * Datasheet: https://www.kinet-ic.com/uploads/KTD2026-7-04h.pdf */ #include <linux/i2c.h> #include <linux/led-class-multicolor.h> #include <linux/module.h> #include <linux/mutex.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/regmap.h> #include <linux/regulator/consumer.h> #define KTD2026_NUM_LEDS … #define KTD2027_NUM_LEDS … #define KTD202X_MAX_LEDS … /* Register bank */ #define KTD202X_REG_RESET_CONTROL … #define KTD202X_REG_FLASH_PERIOD … #define KTD202X_REG_PWM1_TIMER … #define KTD202X_REG_PWM2_TIMER … #define KTD202X_REG_CHANNEL_CTRL … #define KTD202X_REG_TRISE_FALL … #define KTD202X_REG_LED_IOUT(x) … /* Register 0 */ #define KTD202X_TIMER_SLOT_CONTROL_TSLOT1 … #define KTD202X_TIMER_SLOT_CONTROL_TSLOT2 … #define KTD202X_TIMER_SLOT_CONTROL_TSLOT3 … #define KTD202X_TIMER_SLOT_CONTROL_TSLOT4 … #define KTD202X_RSTR_RESET … #define KTD202X_ENABLE_CTRL_WAKE … #define KTD202X_ENABLE_CTRL_SLEEP … #define KTD202X_TRISE_FALL_SCALE_NORMAL … #define KTD202X_TRISE_FALL_SCALE_SLOW_X2 … #define KTD202X_TRISE_FALL_SCALE_SLOW_X4 … #define KTD202X_TRISE_FALL_SCALE_FAST_X8 … /* Register 1 */ #define KTD202X_FLASH_PERIOD_256_MS_LOG_RAMP … /* Register 2-3 */ #define KTD202X_FLASH_ON_TIME_0_4_PERCENT … /* Register 4 */ #define KTD202X_CHANNEL_CTRL_MASK(x) … #define KTD202X_CHANNEL_CTRL_OFF … #define KTD202X_CHANNEL_CTRL_ON(x) … #define KTD202X_CHANNEL_CTRL_PWM1(x) … #define KTD202X_CHANNEL_CTRL_PWM2(x) … /* Register 5 */ #define KTD202X_RAMP_TIMES_2_MS … /* Register 6-9 */ #define KTD202X_LED_CURRENT_10_mA … #define KTD202X_FLASH_PERIOD_MIN_MS … #define KTD202X_FLASH_PERIOD_STEP_MS … #define KTD202X_FLASH_PERIOD_MAX_STEPS … #define KTD202X_FLASH_ON_MAX … #define KTD202X_MAX_BRIGHTNESS … static const struct reg_default ktd202x_reg_defaults[] = …; struct ktd202x_led { … }; struct ktd202x { … }; static int ktd202x_chip_disable(struct ktd202x *chip) { … } static int ktd202x_chip_enable(struct ktd202x *chip) { … } static bool ktd202x_chip_in_use(struct ktd202x *chip) { … } static int ktd202x_brightness_set(struct ktd202x_led *led, struct mc_subled *subleds, unsigned int num_channels) { … } static int ktd202x_brightness_single_set(struct led_classdev *cdev, enum led_brightness value) { … } static int ktd202x_brightness_mc_set(struct led_classdev *cdev, enum led_brightness value) { … } static int ktd202x_blink_set(struct ktd202x_led *led, unsigned long *delay_on, unsigned long *delay_off, struct mc_subled *subleds, unsigned int num_channels) { … } static int ktd202x_blink_single_set(struct led_classdev *cdev, unsigned long *delay_on, unsigned long *delay_off) { … } static int ktd202x_blink_mc_set(struct led_classdev *cdev, unsigned long *delay_on, unsigned long *delay_off) { … } static int ktd202x_setup_led_rgb(struct ktd202x *chip, struct fwnode_handle *fwnode, struct ktd202x_led *led, struct led_init_data *init_data) { … } static int ktd202x_setup_led_single(struct ktd202x *chip, struct fwnode_handle *fwnode, struct ktd202x_led *led, struct led_init_data *init_data) { … } static int ktd202x_add_led(struct ktd202x *chip, struct fwnode_handle *fwnode, unsigned int index) { … } static int ktd202x_probe_fw(struct ktd202x *chip) { … } static const struct regmap_config ktd202x_regmap_config = …; static int ktd202x_probe(struct i2c_client *client) { … } static void ktd202x_remove(struct i2c_client *client) { … } static void ktd202x_shutdown(struct i2c_client *client) { … } static const struct i2c_device_id ktd202x_id[] = …; MODULE_DEVICE_TABLE(i2c, ktd202x_id); static const struct of_device_id ktd202x_match_table[] = …; MODULE_DEVICE_TABLE(of, ktd202x_match_table); static struct i2c_driver ktd202x_driver = …; module_i2c_driver(…) …; MODULE_AUTHOR(…) …; MODULE_DESCRIPTION(…) …; MODULE_LICENSE(…) …;
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