drivers/led/lp50xx.c - third_party/github/zephyrproject-rtos/zephyr - Git at Google

 /*
  * Copyright (c) 2020 Seagate Technology LLC
  * Copyright (c) 2022 Grinn
  *
  * SPDX-License-Identifier: Apache-2.0
  */

 /**
  * @file
  * @brief LP50xx LED controller
  */
 #include <errno.h>
 #include <zephyr/device.h>
 #include <zephyr/devicetree.h>
 #include <zephyr/drivers/gpio.h>
 #include <zephyr/drivers/i2c.h>
 #include <zephyr/drivers/led.h>
 #include <zephyr/drivers/led/lp50xx.h>
 #include <zephyr/kernel.h>
 #include <zephyr/pm/device.h>
 #include <zephyr/sys/util.h>

 #include <zephyr/logging/log.h>
 LOG_MODULE_REGISTER(lp50xx, CONFIG_LED_LOG_LEVEL);

 #define LP50XX_MAX_BRIGHTNESS		100U

 /*
  * Number of supported RGB led modules per chipset.
  *
  * For each module, there are 4 associated registers:
  *   - 1 brightness register
  *   - 3 color registers (RGB)
  *
  * A chipset can have more modules than leds. In this case, the
  * associated registers will simply be inactive.
  */
 #define LP5012_NUM_MODULES		4
 #define LP5024_NUM_MODULES		8
 #define LP5036_NUM_MODULES		12

 /* Maximum number of channels */
 #define LP50XX_MAX_CHANNELS(nmodules)	\
 	((LP50XX_COLORS_PER_LED + 1) * ((nmodules) + 1))

 #define LP50XX_DISABLE_DELAY_US		3
 #define LP50XX_ENABLE_DELAY_US		500

 /* Base registers */
 #define LP50XX_DEVICE_CONFIG0		0x00
 #define LP50XX_DEVICE_CONFIG1		0x01
 #define LP50XX_LED_CONFIG0		0x02

 #define LP50XX_BANK_BASE(nmodules)		\
 	(0x03 + (((nmodules) - 1) / 8))

 #define LP50XX_LED0_BRIGHTNESS(nmodules)	\
 	((LP50XX_BANK_BASE(nmodules)) + 4)

 #define LP50XX_OUT0_COLOR(nmodules)		\
 	(LP50XX_LED0_BRIGHTNESS(nmodules) + (nmodules))

 #define LP50XX_RESET(nmodules)			\
 	(LP50XX_OUT0_COLOR(nmodules) + LP50XX_COLORS_PER_LED * (nmodules))

 /* Register values */
 #define CONFIG0_CHIP_EN			BIT(6)

 #define CONFIG1_LED_GLOBAL_OFF		BIT(0)
 #define CONFIG1_MAX_CURRENT_OPT		BIT(1)
 #define CONFIG1_PWM_DITHERING_EN	BIT(2)
 #define CONFIG1_AUTO_INCR_EN		BIT(3)
 #define CONFIG1_POWER_SAVE_EN		BIT(4)
 #define CONFIG1_LOG_SCALE_EN		BIT(5)

 #define RESET_SW			0xFF

 struct lp50xx_config {
 	struct i2c_dt_spec bus;
 	const struct gpio_dt_spec gpio_enable;
 	uint8_t num_modules;
 	uint8_t max_leds;
 	uint8_t num_leds;
 	bool log_scale_en;
 	bool max_curr_opt;
 	const struct led_info *leds_info;
 };

 struct lp50xx_data {
 	uint8_t *chan_buf;
 };

 static const struct led_info *lp50xx_led_to_info(
 			const struct lp50xx_config *config, uint32_t led)
 {
 	if (led < config->num_leds) {
 		return &config->leds_info[led];
 	}

 	return NULL;
 }

 static int lp50xx_get_info(const struct device *dev, uint32_t led,
 			   const struct led_info **info)
 {
 	const struct lp50xx_config *config = dev->config;
 	const struct led_info *led_info = lp50xx_led_to_info(config, led);

 	if (!led_info) {
 		return -EINVAL;
 	}

 	*info = led_info;

 	return 0;
 }

 static int lp50xx_set_brightness(const struct device *dev,
 				 uint32_t led, uint8_t value)
 {
 	const struct lp50xx_config *config = dev->config;
 	const struct led_info *led_info = lp50xx_led_to_info(config, led);
 	uint8_t buf[2];

 	if (!led_info) {
 		return -ENODEV;
 	}

 	if (value > LP50XX_MAX_BRIGHTNESS) {
 		LOG_ERR("%s: brightness value out of bounds: val=%d, max=%d",
 			dev->name, value, LP50XX_MAX_BRIGHTNESS);
 		return -EINVAL;
 	}

 	buf[0] = LP50XX_LED0_BRIGHTNESS(config->num_modules) + led_info->index;
 	buf[1] = (value * 0xff) / 100;

 	return i2c_write_dt(&config->bus, buf, sizeof(buf));
 }

 static int lp50xx_on(const struct device *dev, uint32_t led)
 {
 	return lp50xx_set_brightness(dev, led, 100);
 }

 static int lp50xx_off(const struct device *dev, uint32_t led)
 {
 	return lp50xx_set_brightness(dev, led, 0);
 }

 static int lp50xx_set_color(const struct device *dev, uint32_t led,
 			    uint8_t num_colors, const uint8_t *color)
 {
 	const struct lp50xx_config *config = dev->config;
 	const struct led_info *led_info = lp50xx_led_to_info(config, led);
 	uint8_t buf[4];

 	if (!led_info) {
 		return -ENODEV;
 	}

 	if (num_colors != led_info->num_colors) {
 		LOG_ERR("%s: invalid number of colors: got=%d, expected=%d",
 			dev->name,
 			num_colors,
 			led_info->num_colors);
 		return -EINVAL;
 	}

 	buf[0] = LP50XX_OUT0_COLOR(config->num_modules);
 	buf[0] += LP50XX_COLORS_PER_LED * led_info->index;

 	buf[1] = color[0];
 	buf[2] = color[1];
 	buf[3] = color[2];

 	return i2c_write_dt(&config->bus, buf, sizeof(buf));
 }

 static int lp50xx_write_channels(const struct device *dev,
 				 uint32_t start_channel,
 				 uint32_t num_channels, const uint8_t *buf)
 {
 	const struct lp50xx_config *config = dev->config;
 	struct lp50xx_data *data = dev->data;
 	uint8_t base_channel, end_channel, max_channels;

 	base_channel = LP50XX_BANK_BASE(config->num_modules);
 	end_channel = base_channel + start_channel + num_channels;
 	max_channels = base_channel + LP50XX_MAX_CHANNELS(config->num_modules);

 	if (end_channel > max_channels) {
 		return -EINVAL;
 	}

 	/*
 	 * Unfortunately this controller doesn't support commands split into
 	 * two I2C messages.
 	 */
 	data->chan_buf[0] = base_channel + start_channel;
 	memcpy(data->chan_buf + 1, buf, num_channels);

 	return i2c_write_dt(&config->bus, data->chan_buf, num_channels + 1);
 }

 static int lp50xx_reset(const struct device *dev)
 {
 	const struct lp50xx_config *config = dev->config;
 	uint8_t buf[2];
 	int err;

 	/* Software reset */
 	buf[0] = LP50XX_RESET(config->num_modules);
 	buf[1] = RESET_SW;
 	err = i2c_write_dt(&config->bus, buf, 2);
 	if (err < 0) {
 		return err;
 	}

 	/* After reset, apply configuration since all registers are reset. */
 	buf[0] = LP50XX_DEVICE_CONFIG1;
 	buf[1] = CONFIG1_PWM_DITHERING_EN | CONFIG1_AUTO_INCR_EN
 		| CONFIG1_POWER_SAVE_EN;
 	if (config->max_curr_opt) {
 		buf[1] |= CONFIG1_MAX_CURRENT_OPT;
 	}
 	if (config->log_scale_en) {
 		buf[1] |= CONFIG1_LOG_SCALE_EN;
 	}

 	return i2c_write_dt(&config->bus, buf, 2);
 }

 static int lp50xx_hw_enable(const struct device *dev, bool enable)
 {
 	const struct lp50xx_config *config = dev->config;
 	int err;

 	if (config->gpio_enable.port == NULL) {
 		/* Nothing to do */
 		return 0;
 	}

 	err = gpio_pin_set_dt(&config->gpio_enable, enable);
 	if (err < 0) {
 		LOG_ERR("%s: failed to set enable gpio", dev->name);
 		return err;
 	}

 	k_usleep(enable ? LP50XX_ENABLE_DELAY_US : LP50XX_DISABLE_DELAY_US);

 	return 0;
 }

 static int lp50xx_enable(const struct device *dev, bool enable)
 {
 	const struct lp50xx_config *config = dev->config;
 	uint8_t value = enable ? CONFIG0_CHIP_EN : 0;

 	return i2c_reg_update_byte_dt(&config->bus,
 				      LP50XX_DEVICE_CONFIG0,
 				      CONFIG0_CHIP_EN,
 				      value);
 }

 static int lp50xx_init(const struct device *dev)
 {
 	const struct lp50xx_config *config = dev->config;
 	int err;

 	if (!i2c_is_ready_dt(&config->bus)) {
 		LOG_ERR("%s: I2C device not ready", dev->name);
 		return -ENODEV;
 	}

 	if (config->num_leds > config->max_leds) {
 		LOG_ERR("%s: invalid number of LEDs %d (max %d)",
 			dev->name,
 			config->num_leds,
 			config->max_leds);
 		return -EINVAL;
 	}

 	/* Configure GPIO if present */
 	if (config->gpio_enable.port != NULL) {
 		if (!gpio_is_ready_dt(&config->gpio_enable)) {
 			LOG_ERR("%s: enable gpio is not ready", dev->name);
 			return -ENODEV;
 		}

 		err = gpio_pin_configure_dt(&config->gpio_enable,
 					    GPIO_OUTPUT_INACTIVE);
 		if (err < 0) {
 			LOG_ERR("%s: failed to initialize enable gpio",
 				dev->name);
 			return err;
 		}
 	}

 	/* Enable hardware */
 	err = lp50xx_hw_enable(dev, true);
 	if (err < 0) {
 		LOG_ERR("%s: failed to enable hardware", dev->name);
 		return err;
 	}

 	/* Reset device */
 	err = lp50xx_reset(dev);
 	if (err < 0) {
 		LOG_ERR("%s: failed to reset", dev->name);
 		return err;
 	}

 	/* Enable device */
 	err = lp50xx_enable(dev, true);
 	if (err < 0) {
 		LOG_ERR("%s: failed to enable", dev->name);
 		return err;
 	}

 	return 0;
 }

 #ifdef CONFIG_PM_DEVICE
 static int lp50xx_pm_action(const struct device *dev,
 			    enum pm_device_action action)
 {
 	switch (action) {
 	case PM_DEVICE_ACTION_SUSPEND:
 		return lp50xx_enable(dev, false);
 	case PM_DEVICE_ACTION_RESUME:
 		return lp50xx_enable(dev, true);
 	default:
 		return -ENOTSUP;
 	}

 	return 0;
 }
 #endif /* CONFIG_PM_DEVICE */

 static const struct led_driver_api lp50xx_led_api = {
 	.on		= lp50xx_on,
 	.off		= lp50xx_off,
 	.get_info	= lp50xx_get_info,
 	.set_brightness	= lp50xx_set_brightness,
 	.set_color	= lp50xx_set_color,
 	.write_channels	= lp50xx_write_channels,
 };

 #define COLOR_MAPPING(led_node_id)						\
 	const uint8_t color_mapping_##led_node_id[] =				\
 		DT_PROP(led_node_id, color_mapping);

 #define LED_INFO(led_node_id)							\
 	{									\
 		.label		= DT_PROP(led_node_id, label),			\
 		.index		= DT_PROP(led_node_id, index),			\
 		.num_colors	=						\
 			DT_PROP_LEN(led_node_id, color_mapping),		\
 		.color_mapping	= color_mapping_##led_node_id,			\
 	},

 #define LP50XX_DEVICE(n, id, nmodules)						\
 	DT_INST_FOREACH_CHILD(n, COLOR_MAPPING)					\
 										\
 	static const struct led_info lp##id##_leds_##n[] = {			\
 		DT_INST_FOREACH_CHILD(n, LED_INFO)				\
 	};									\
 										\
 	static const struct lp50xx_config lp##id##_config_##n = {		\
 		.bus			= I2C_DT_SPEC_INST_GET(n),		\
 		.gpio_enable		=					\
 			GPIO_DT_SPEC_INST_GET_OR(n, enable_gpios, {0}),		\
 		.num_modules		= nmodules,				\
 		.max_leds		= LP##id##_MAX_LEDS,			\
 		.num_leds		= ARRAY_SIZE(lp##id##_leds_##n),	\
 		.log_scale_en		= DT_INST_PROP(n, log_scale_en),	\
 		.max_curr_opt		= DT_INST_PROP(n, max_curr_opt),	\
 		.leds_info		= lp##id##_leds_##n,			\
 	};									\
 										\
 	static uint8_t lp##id##_chan_buf_##n[LP50XX_MAX_CHANNELS(nmodules) + 1];\
 										\
 	static struct lp50xx_data lp##id##_data_##n = {				\
 		.chan_buf	= lp##id##_chan_buf_##n,			\
 	};									\
 										\
 	PM_DEVICE_DT_INST_DEFINE(n, lp50xx_pm_action);				\
 										\
 	DEVICE_DT_INST_DEFINE(n,						\
 			      lp50xx_init,					\
 			      PM_DEVICE_DT_INST_GET(n),				\
 			      &lp##id##_data_##n,				\
 			      &lp##id##_config_##n,				\
 			      POST_KERNEL, CONFIG_LED_INIT_PRIORITY,		\
 			      &lp50xx_led_api);

 #undef DT_DRV_COMPAT
 #define DT_DRV_COMPAT ti_lp5009
 DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5009, LP5012_NUM_MODULES)

 #undef DT_DRV_COMPAT
 #define DT_DRV_COMPAT ti_lp5012
 DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5012, LP5012_NUM_MODULES)

 #undef DT_DRV_COMPAT
 #define DT_DRV_COMPAT ti_lp5018
 DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5018, LP5024_NUM_MODULES)

 #undef DT_DRV_COMPAT
 #define DT_DRV_COMPAT ti_lp5024
 DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5024, LP5024_NUM_MODULES)

 #undef DT_DRV_COMPAT
 #define DT_DRV_COMPAT ti_lp5030
 DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5030, LP5036_NUM_MODULES)

 #undef DT_DRV_COMPAT
 #define DT_DRV_COMPAT ti_lp5036
 DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5036, LP5036_NUM_MODULES)
	/*
	* Copyright (c) 2020 Seagate Technology LLC
	* Copyright (c) 2022 Grinn
	*
	* SPDX-License-Identifier: Apache-2.0
	*/

	/**
	* @file
	* @brief LP50xx LED controller
	*/
	#include <errno.h>
	#include <zephyr/device.h>
	#include <zephyr/devicetree.h>
	#include <zephyr/drivers/gpio.h>
	#include <zephyr/drivers/i2c.h>
	#include <zephyr/drivers/led.h>
	#include <zephyr/drivers/led/lp50xx.h>
	#include <zephyr/kernel.h>
	#include <zephyr/pm/device.h>
	#include <zephyr/sys/util.h>

	#include <zephyr/logging/log.h>
	LOG_MODULE_REGISTER(lp50xx, CONFIG_LED_LOG_LEVEL);

	#define LP50XX_MAX_BRIGHTNESS 100U

	/*
	* Number of supported RGB led modules per chipset.
	*
	* For each module, there are 4 associated registers:
	* - 1 brightness register
	* - 3 color registers (RGB)
	*
	* A chipset can have more modules than leds. In this case, the
	* associated registers will simply be inactive.
	*/
	#define LP5012_NUM_MODULES 4
	#define LP5024_NUM_MODULES 8
	#define LP5036_NUM_MODULES 12

	/* Maximum number of channels */
	#define LP50XX_MAX_CHANNELS(nmodules) \
	((LP50XX_COLORS_PER_LED + 1) * ((nmodules) + 1))

	#define LP50XX_DISABLE_DELAY_US 3
	#define LP50XX_ENABLE_DELAY_US 500

	/* Base registers */
	#define LP50XX_DEVICE_CONFIG0 0x00
	#define LP50XX_DEVICE_CONFIG1 0x01
	#define LP50XX_LED_CONFIG0 0x02

	#define LP50XX_BANK_BASE(nmodules) \
	(0x03 + (((nmodules) - 1) / 8))

	#define LP50XX_LED0_BRIGHTNESS(nmodules) \
	((LP50XX_BANK_BASE(nmodules)) + 4)

	#define LP50XX_OUT0_COLOR(nmodules) \
	(LP50XX_LED0_BRIGHTNESS(nmodules) + (nmodules))

	#define LP50XX_RESET(nmodules) \
	(LP50XX_OUT0_COLOR(nmodules) + LP50XX_COLORS_PER_LED * (nmodules))

	/* Register values */
	#define CONFIG0_CHIP_EN BIT(6)

	#define CONFIG1_LED_GLOBAL_OFF BIT(0)
	#define CONFIG1_MAX_CURRENT_OPT BIT(1)
	#define CONFIG1_PWM_DITHERING_EN BIT(2)
	#define CONFIG1_AUTO_INCR_EN BIT(3)
	#define CONFIG1_POWER_SAVE_EN BIT(4)
	#define CONFIG1_LOG_SCALE_EN BIT(5)

	#define RESET_SW 0xFF

	struct lp50xx_config {
	struct i2c_dt_spec bus;
	const struct gpio_dt_spec gpio_enable;
	uint8_t num_modules;
	uint8_t max_leds;
	uint8_t num_leds;
	bool log_scale_en;
	bool max_curr_opt;
	const struct led_info *leds_info;
	};

	struct lp50xx_data {
	uint8_t *chan_buf;
	};

	static const struct led_info *lp50xx_led_to_info(
	const struct lp50xx_config *config, uint32_t led)
	{
	if (led < config->num_leds) {
	return &config->leds_info[led];
	}

	return NULL;
	}

	static int lp50xx_get_info(const struct device *dev, uint32_t led,
	const struct led_info **info)
	{
	const struct lp50xx_config *config = dev->config;
	const struct led_info *led_info = lp50xx_led_to_info(config, led);

	if (!led_info) {
	return -EINVAL;
	}

	*info = led_info;

	return 0;
	}

	static int lp50xx_set_brightness(const struct device *dev,
	uint32_t led, uint8_t value)
	{
	const struct lp50xx_config *config = dev->config;
	const struct led_info *led_info = lp50xx_led_to_info(config, led);
	uint8_t buf[2];

	if (!led_info) {
	return -ENODEV;
	}

	if (value > LP50XX_MAX_BRIGHTNESS) {
	LOG_ERR("%s: brightness value out of bounds: val=%d, max=%d",
	dev->name, value, LP50XX_MAX_BRIGHTNESS);
	return -EINVAL;
	}

	buf[0] = LP50XX_LED0_BRIGHTNESS(config->num_modules) + led_info->index;
	buf[1] = (value * 0xff) / 100;

	return i2c_write_dt(&config->bus, buf, sizeof(buf));
	}

	static int lp50xx_on(const struct device *dev, uint32_t led)
	{
	return lp50xx_set_brightness(dev, led, 100);
	}

	static int lp50xx_off(const struct device *dev, uint32_t led)
	{
	return lp50xx_set_brightness(dev, led, 0);
	}

	static int lp50xx_set_color(const struct device *dev, uint32_t led,
	uint8_t num_colors, const uint8_t *color)
	{
	const struct lp50xx_config *config = dev->config;
	const struct led_info *led_info = lp50xx_led_to_info(config, led);
	uint8_t buf[4];

	if (!led_info) {
	return -ENODEV;
	}

	if (num_colors != led_info->num_colors) {
	LOG_ERR("%s: invalid number of colors: got=%d, expected=%d",
	dev->name,
	num_colors,
	led_info->num_colors);
	return -EINVAL;
	}

	buf[0] = LP50XX_OUT0_COLOR(config->num_modules);
	buf[0] += LP50XX_COLORS_PER_LED * led_info->index;

	buf[1] = color[0];
	buf[2] = color[1];
	buf[3] = color[2];

	return i2c_write_dt(&config->bus, buf, sizeof(buf));
	}

	static int lp50xx_write_channels(const struct device *dev,
	uint32_t start_channel,
	uint32_t num_channels, const uint8_t *buf)
	{
	const struct lp50xx_config *config = dev->config;
	struct lp50xx_data *data = dev->data;
	uint8_t base_channel, end_channel, max_channels;

	base_channel = LP50XX_BANK_BASE(config->num_modules);
	end_channel = base_channel + start_channel + num_channels;
	max_channels = base_channel + LP50XX_MAX_CHANNELS(config->num_modules);

	if (end_channel > max_channels) {
	return -EINVAL;
	}

	/*
	* Unfortunately this controller doesn't support commands split into
	* two I2C messages.
	*/
	data->chan_buf[0] = base_channel + start_channel;
	memcpy(data->chan_buf + 1, buf, num_channels);

	return i2c_write_dt(&config->bus, data->chan_buf, num_channels + 1);
	}

	static int lp50xx_reset(const struct device *dev)
	{
	const struct lp50xx_config *config = dev->config;
	uint8_t buf[2];
	int err;

	/* Software reset */
	buf[0] = LP50XX_RESET(config->num_modules);
	buf[1] = RESET_SW;
	err = i2c_write_dt(&config->bus, buf, 2);
	if (err < 0) {
	return err;
	}

	/* After reset, apply configuration since all registers are reset. */
	buf[0] = LP50XX_DEVICE_CONFIG1;
	buf[1] = CONFIG1_PWM_DITHERING_EN \| CONFIG1_AUTO_INCR_EN
	\| CONFIG1_POWER_SAVE_EN;
	if (config->max_curr_opt) {
	buf[1] \|= CONFIG1_MAX_CURRENT_OPT;
	}
	if (config->log_scale_en) {
	buf[1] \|= CONFIG1_LOG_SCALE_EN;
	}

	return i2c_write_dt(&config->bus, buf, 2);
	}

	static int lp50xx_hw_enable(const struct device *dev, bool enable)
	{
	const struct lp50xx_config *config = dev->config;
	int err;

	if (config->gpio_enable.port == NULL) {
	/* Nothing to do */
	return 0;
	}

	err = gpio_pin_set_dt(&config->gpio_enable, enable);
	if (err < 0) {
	LOG_ERR("%s: failed to set enable gpio", dev->name);
	return err;
	}

	k_usleep(enable ? LP50XX_ENABLE_DELAY_US : LP50XX_DISABLE_DELAY_US);

	return 0;
	}

	static int lp50xx_enable(const struct device *dev, bool enable)
	{
	const struct lp50xx_config *config = dev->config;
	uint8_t value = enable ? CONFIG0_CHIP_EN : 0;

	return i2c_reg_update_byte_dt(&config->bus,
	LP50XX_DEVICE_CONFIG0,
	CONFIG0_CHIP_EN,
	value);
	}

	static int lp50xx_init(const struct device *dev)
	{
	const struct lp50xx_config *config = dev->config;
	int err;

	if (!i2c_is_ready_dt(&config->bus)) {
	LOG_ERR("%s: I2C device not ready", dev->name);
	return -ENODEV;
	}

	if (config->num_leds > config->max_leds) {
	LOG_ERR("%s: invalid number of LEDs %d (max %d)",
	dev->name,
	config->num_leds,
	config->max_leds);
	return -EINVAL;
	}

	/* Configure GPIO if present */
	if (config->gpio_enable.port != NULL) {
	if (!gpio_is_ready_dt(&config->gpio_enable)) {
	LOG_ERR("%s: enable gpio is not ready", dev->name);
	return -ENODEV;
	}

	err = gpio_pin_configure_dt(&config->gpio_enable,
	GPIO_OUTPUT_INACTIVE);
	if (err < 0) {
	LOG_ERR("%s: failed to initialize enable gpio",
	dev->name);
	return err;
	}
	}

	/* Enable hardware */
	err = lp50xx_hw_enable(dev, true);
	if (err < 0) {
	LOG_ERR("%s: failed to enable hardware", dev->name);
	return err;
	}

	/* Reset device */
	err = lp50xx_reset(dev);
	if (err < 0) {
	LOG_ERR("%s: failed to reset", dev->name);
	return err;
	}

	/* Enable device */
	err = lp50xx_enable(dev, true);
	if (err < 0) {
	LOG_ERR("%s: failed to enable", dev->name);
	return err;
	}

	return 0;
	}

	#ifdef CONFIG_PM_DEVICE
	static int lp50xx_pm_action(const struct device *dev,
	enum pm_device_action action)
	{
	switch (action) {
	case PM_DEVICE_ACTION_SUSPEND:
	return lp50xx_enable(dev, false);
	case PM_DEVICE_ACTION_RESUME:
	return lp50xx_enable(dev, true);
	default:
	return -ENOTSUP;
	}

	return 0;
	}
	#endif /* CONFIG_PM_DEVICE */

	static const struct led_driver_api lp50xx_led_api = {
	.on = lp50xx_on,
	.off = lp50xx_off,
	.get_info = lp50xx_get_info,
	.set_brightness = lp50xx_set_brightness,
	.set_color = lp50xx_set_color,
	.write_channels = lp50xx_write_channels,
	};

	#define COLOR_MAPPING(led_node_id) \
	const uint8_t color_mapping_##led_node_id[] = \
	DT_PROP(led_node_id, color_mapping);

	#define LED_INFO(led_node_id) \
	{ \
	.label = DT_PROP(led_node_id, label), \
	.index = DT_PROP(led_node_id, index), \
	.num_colors = \
	DT_PROP_LEN(led_node_id, color_mapping), \
	.color_mapping = color_mapping_##led_node_id, \
	},

	#define LP50XX_DEVICE(n, id, nmodules) \
	DT_INST_FOREACH_CHILD(n, COLOR_MAPPING) \
	\
	static const struct led_info lp##id##_leds_##n[] = { \
	DT_INST_FOREACH_CHILD(n, LED_INFO) \
	}; \
	\
	static const struct lp50xx_config lp##id##_config_##n = { \
	.bus = I2C_DT_SPEC_INST_GET(n), \
	.gpio_enable = \
	GPIO_DT_SPEC_INST_GET_OR(n, enable_gpios, {0}), \
	.num_modules = nmodules, \
	.max_leds = LP##id##_MAX_LEDS, \
	.num_leds = ARRAY_SIZE(lp##id##_leds_##n), \
	.log_scale_en = DT_INST_PROP(n, log_scale_en), \
	.max_curr_opt = DT_INST_PROP(n, max_curr_opt), \
	.leds_info = lp##id##_leds_##n, \
	}; \
	\
	static uint8_t lp##id##_chan_buf_##n[LP50XX_MAX_CHANNELS(nmodules) + 1];\
	\
	static struct lp50xx_data lp##id##_data_##n = { \
	.chan_buf = lp##id##_chan_buf_##n, \
	}; \
	\
	PM_DEVICE_DT_INST_DEFINE(n, lp50xx_pm_action); \
	\
	DEVICE_DT_INST_DEFINE(n, \
	lp50xx_init, \
	PM_DEVICE_DT_INST_GET(n), \
	&lp##id##_data_##n, \
	&lp##id##_config_##n, \
	POST_KERNEL, CONFIG_LED_INIT_PRIORITY, \
	&lp50xx_led_api);

	#undef DT_DRV_COMPAT
	#define DT_DRV_COMPAT ti_lp5009
	DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5009, LP5012_NUM_MODULES)

	#undef DT_DRV_COMPAT
	#define DT_DRV_COMPAT ti_lp5012
	DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5012, LP5012_NUM_MODULES)

	#undef DT_DRV_COMPAT
	#define DT_DRV_COMPAT ti_lp5018
	DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5018, LP5024_NUM_MODULES)

	#undef DT_DRV_COMPAT
	#define DT_DRV_COMPAT ti_lp5024
	DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5024, LP5024_NUM_MODULES)

	#undef DT_DRV_COMPAT
	#define DT_DRV_COMPAT ti_lp5030
	DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5030, LP5036_NUM_MODULES)

	#undef DT_DRV_COMPAT
	#define DT_DRV_COMPAT ti_lp5036
	DT_INST_FOREACH_STATUS_OKAY_VARGS(LP50XX_DEVICE, 5036, LP5036_NUM_MODULES)