text: // 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		0x00
  #define LP50XX_DEV_CFG1		0x01
  #define LP50XX_LED_CFG0		0x02
  
  /* LP5009 and LP5012 registers */
  #define LP5012_BNK_BRT		0x03
  #define LP5012_BNKA_CLR		0x04
  #define LP5012_BNKB_CLR		0x05
  #define LP5012_BNKC_CLR		0x06
  #define LP5012_LED0_BRT		0x07
  #define LP5012_OUT0_CLR		0x0b
  #define LP5012_RESET		0x17
  
  /* LP5018 and LP5024 registers */
  #define LP5024_BNK_BRT		0x03
  #define LP5024_BNKA_CLR		0x04
  #define LP5024_BNKB_CLR		0x05
  #define LP5024_BNKC_CLR		0x06
  #define LP5024_LED0_BRT		0x07
  #define LP5024_OUT0_CLR		0x0f
  #define LP5024_RESET		0x27
  
  /* LP5030 and LP5036 registers */
  #define LP5036_LED_CFG1		0x03
  #define LP5036_BNK_BRT		0x04
  #define LP5036_BNKA_CLR		0x05
  #define LP5036_BNKB_CLR		0x06
  #define LP5036_BNKC_CLR		0x07
  #define LP5036_LED0_BRT		0x08
  #define LP5036_OUT0_CLR		0x14
  #define LP5036_RESET		0x38
  
  #define LP50XX_SW_RESET		0xff
  #define LP50XX_CHIP_EN		BIT(6)
  
  /* There are 3 LED outputs per bank */
  #define LP50XX_LEDS_PER_MODULE	3
  
  #define LP5009_MAX_LED_MODULES	2
  #define LP5012_MAX_LED_MODULES	4
  #define LP5018_MAX_LED_MODULES	6
  #define LP5024_MAX_LED_MODULES	8
  #define LP5030_MAX_LED_MODULES	10
  #define LP5036_MAX_LED_MODULES	12
  
  static const struct reg_default lp5012_reg_defs[] = {
  	{LP50XX_DEV_CFG0, 0x0},
  	{LP50XX_DEV_CFG1, 0x3c},
  	{LP50XX_LED_CFG0, 0x0},
  	{LP5012_BNK_BRT, 0xff},
  	{LP5012_BNKA_CLR, 0x0f},
  	{LP5012_BNKB_CLR, 0x0f},
  	{LP5012_BNKC_CLR, 0x0f},
  	{LP5012_LED0_BRT, 0x0f},
  	/* LEDX_BRT registers are all 0xff for defaults */
  	{0x08, 0xff}, {0x09, 0xff}, {0x0a, 0xff},
  	{LP5012_OUT0_CLR, 0x0f},
  	/* OUTX_CLR registers are all 0x0 for defaults */
  	{0x0c, 0x00}, {0x0d, 0x00}, {0x0e, 0x00}, {0x0f, 0x00}, {0x10, 0x00},
  	{0x11, 0x00}, {0x12, 0x00}, {0x13, 0x00}, {0x14, 0x00},	{0x15, 0x00},
  	{0x16, 0x00},
  	{LP5012_RESET, 0x00}
  };
  
  static const struct reg_default lp5024_reg_defs[] = {
  	{LP50XX_DEV_CFG0, 0x0},
  	{LP50XX_DEV_CFG1, 0x3c},
  	{LP50XX_LED_CFG0, 0x0},
  	{LP5024_BNK_BRT, 0xff},
  	{LP5024_BNKA_CLR, 0x0f},
  	{LP5024_BNKB_CLR, 0x0f},
  	{LP5024_BNKC_CLR, 0x0f},
  	{LP5024_LED0_BRT, 0x0f},
  	/* LEDX_BRT registers are all 0xff for defaults */
  	{0x08, 0xff}, {0x09, 0xff}, {0x0a, 0xff}, {0x0b, 0xff}, {0x0c, 0xff},
  	{0x0d, 0xff}, {0x0e, 0xff},
  	{LP5024_OUT0_CLR, 0x0f},
  	/* OUTX_CLR registers are all 0x0 for defaults */
  	{0x10, 0x00}, {0x11, 0x00}, {0x12, 0x00}, {0x13, 0x00}, {0x14, 0x00},
  	{0x15, 0x00}, {0x16, 0x00}, {0x17, 0x00}, {0x18, 0x00}, {0x19, 0x00},
  	{0x1a, 0x00}, {0x1b, 0x00}, {0x1c, 0x00}, {0x1d, 0x00}, {0x1e, 0x00},
  	{0x1f, 0x00}, {0x20, 0x00}, {0x21, 0x00}, {0x22, 0x00}, {0x23, 0x00},
  	{0x24, 0x00}, {0x25, 0x00}, {0x26, 0x00},
  	{LP5024_RESET, 0x00}
  };
  
  static const struct reg_default lp5036_reg_defs[] = {
  	{LP50XX_DEV_CFG0, 0x0},
  	{LP50XX_DEV_CFG1, 0x3c},
  	{LP50XX_LED_CFG0, 0x0},
  	{LP5036_LED_CFG1, 0x0},
  	{LP5036_BNK_BRT, 0xff},
  	{LP5036_BNKA_CLR, 0x0f},
  	{LP5036_BNKB_CLR, 0x0f},
  	{LP5036_BNKC_CLR, 0x0f},
  	{LP5036_LED0_BRT, 0x0f},
  	/* LEDX_BRT registers are all 0xff for defaults */
  	{0x08, 0xff}, {0x09, 0xff}, {0x0a, 0xff}, {0x0b, 0xff}, {0x0c, 0xff},
  	{0x0d, 0xff}, {0x0e, 0xff}, {0x0f, 0xff}, {0x10, 0xff}, {0x11, 0xff},
  	{0x12, 0xff}, {0x13, 0xff},
  	{LP5036_OUT0_CLR, 0x0f},
  	/* OUTX_CLR registers are all 0x0 for defaults */
  	{0x15, 0x00}, {0x16, 0x00}, {0x17, 0x00}, {0x18, 0x00}, {0x19, 0x00},
  	{0x1a, 0x00}, {0x1b, 0x00}, {0x1c, 0x00}, {0x1d, 0x00}, {0x1e, 0x00},
  	{0x1f, 0x00}, {0x20, 0x00}, {0x21, 0x00}, {0x22, 0x00}, {0x23, 0x00},
  	{0x24, 0x00}, {0x25, 0x00}, {0x26, 0x00}, {0x27, 0x00}, {0x28, 0x00},
  	{0x29, 0x00}, {0x2a, 0x00}, {0x2b, 0x00}, {0x2c, 0x00}, {0x2d, 0x00},
  	{0x2e, 0x00}, {0x2f, 0x00}, {0x30, 0x00}, {0x31, 0x00}, {0x32, 0x00},
  	{0x33, 0x00}, {0x34, 0x00}, {0x35, 0x00}, {0x36, 0x00}, {0x37, 0x00},
  	{LP5036_RESET, 0x00}
  };
  
  static const struct regmap_config lp5012_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  
  	.max_register = LP5012_RESET,
  	.reg_defaults = lp5012_reg_defs,
  	.num_reg_defaults = ARRAY_SIZE(lp5012_reg_defs),
  	.cache_type = REGCACHE_FLAT,
  };
  
  static const struct regmap_config lp5024_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  
  	.max_register = LP5024_RESET,
  	.reg_defaults = lp5024_reg_defs,
  	.num_reg_defaults = ARRAY_SIZE(lp5024_reg_defs),
  	.cache_type = REGCACHE_FLAT,
  };
  
  static const struct regmap_config lp5036_regmap_config = {
  	.reg_bits = 8,
  	.val_bits = 8,
  
  	.max_register = LP5036_RESET,
  	.reg_defaults = lp5036_reg_defs,
  	.num_reg_defaults = ARRAY_SIZE(lp5036_reg_defs),
  	.cache_type = REGCACHE_FLAT,
  };
  
  enum lp50xx_model {
  	LP5009,
  	LP5012,
  	LP5018,
  	LP5024,
  	LP5030,
  	LP5036,
  };
  
  /**
   * 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 {
  	const struct regmap_config *lp50xx_regmap_config;
  	int model_id;
  	u8 max_modules;
  	u8 num_leds;
  	u8 led_brightness0_reg;
  	u8 mix_out0_reg;
  	u8 bank_brt_reg;
  	u8 bank_mix_reg;
  	u8 reset_reg;
  };
  
  static const struct lp50xx_chip_info lp50xx_chip_info_tbl[] = {
  	[LP5009] = {
  		.model_id = LP5009,
  		.max_modules = LP5009_MAX_LED_MODULES,
  		.num_leds = LP5009_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE,
  		.led_brightness0_reg = LP5012_LED0_BRT,
  		.mix_out0_reg = LP5012_OUT0_CLR,
  		.bank_brt_reg = LP5012_BNK_BRT,
  		.bank_mix_reg = LP5012_BNKA_CLR,
  		.reset_reg = LP5012_RESET,
  		.lp50xx_regmap_config = &lp5012_regmap_config,
  	},
  	[LP5012] = {
  		.model_id = LP5012,
  		.max_modules = LP5012_MAX_LED_MODULES,
  		.num_leds = LP5012_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE,
  		.led_brightness0_reg = LP5012_LED0_BRT,
  		.mix_out0_reg = LP5012_OUT0_CLR,
  		.bank_brt_reg = LP5012_BNK_BRT,
  		.bank_mix_reg = LP5012_BNKA_CLR,
  		.reset_reg = LP5012_RESET,
  		.lp50xx_regmap_config = &lp5012_regmap_config,
  	},
  	[LP5018] = {
  		.model_id = LP5018,
  		.max_modules = LP5018_MAX_LED_MODULES,
  		.num_leds = LP5018_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE,
  		.led_brightness0_reg = LP5024_LED0_BRT,
  		.mix_out0_reg = LP5024_OUT0_CLR,
  		.bank_brt_reg = LP5024_BNK_BRT,
  		.bank_mix_reg = LP5024_BNKA_CLR,
  		.reset_reg = LP5024_RESET,
  		.lp50xx_regmap_config = &lp5024_regmap_config,
  	},
  	[LP5024] = {
  		.model_id = LP5024,
  		.max_modules = LP5024_MAX_LED_MODULES,
  		.num_leds = LP5024_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE,
  		.led_brightness0_reg = LP5024_LED0_BRT,
  		.mix_out0_reg = LP5024_OUT0_CLR,
  		.bank_brt_reg = LP5024_BNK_BRT,
  		.bank_mix_reg = LP5024_BNKA_CLR,
  		.reset_reg = LP5024_RESET,
  		.lp50xx_regmap_config = &lp5024_regmap_config,
  	},
  	[LP5030] = {
  		.model_id = LP5030,
  		.max_modules = LP5030_MAX_LED_MODULES,
  		.num_leds = LP5030_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE,
  		.led_brightness0_reg = LP5036_LED0_BRT,
  		.mix_out0_reg = LP5036_OUT0_CLR,
  		.bank_brt_reg = LP5036_BNK_BRT,
  		.bank_mix_reg = LP5036_BNKA_CLR,
  		.reset_reg = LP5036_RESET,
  		.lp50xx_regmap_config = &lp5036_regmap_config,
  	},
  	[LP5036] = {
  		.model_id = LP5036,
  		.max_modules = LP5036_MAX_LED_MODULES,
  		.num_leds = LP5036_MAX_LED_MODULES * LP50XX_LEDS_PER_MODULE,
  		.led_brightness0_reg = LP5036_LED0_BRT,
  		.mix_out0_reg = LP5036_OUT0_CLR,
  		.bank_brt_reg = LP5036_BNK_BRT,
  		.bank_mix_reg = LP5036_BNKA_CLR,
  		.reset_reg = LP5036_RESET,
  		.lp50xx_regmap_config = &lp5036_regmap_config,
  	},
  };
  
  struct lp50xx_led {
  	struct led_classdev_mc mc_cdev;
  	struct lp50xx *priv;
  	unsigned long bank_modules;
  	int led_intensity[LP50XX_LEDS_PER_MODULE];
  	u8 ctrl_bank_enabled;
  	int led_number;
  };
  
  /**
   * 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)
   * @num_of_banked_leds: holds the number of banked LEDs
   * @leds: array of LED strings
   */
  struct lp50xx {
  	struct gpio_desc *enable_gpio;
  	struct regulator *regulator;
  	struct i2c_client *client;
  	struct regmap *regmap;
  	struct device *dev;
  	struct mutex lock;
  	const struct lp50xx_chip_info *chip_info;
  	int num_of_banked_leds;
  
  	/* This needs to be at the end of the struct */
  	struct lp50xx_led leds[];
  };
  
  static struct lp50xx_led *mcled_cdev_to_led(struct led_classdev_mc *mc_cdev)
  {
  	return container_of(mc_cdev, struct lp50xx_led, mc_cdev);
  }
  
  static int lp50xx_brightness_set(struct led_classdev *cdev,
  			     enum led_brightness brightness)
  {
  	struct led_classdev_mc *mc_dev = lcdev_to_mccdev(cdev);
  	struct lp50xx_led *led = mcled_cdev_to_led(mc_dev);
  	const struct lp50xx_chip_info *led_chip = led->priv->chip_info;
  	u8 led_offset, reg_val;
  	int ret = 0;
  	int i;
  
  	mutex_lock(&led->priv->lock);
  	if (led->ctrl_bank_enabled)
  		reg_val = led_chip->bank_brt_reg;
  	else
  		reg_val = led_chip->led_brightness0_reg +
  			  led->led_number;
  
  	ret = regmap_write(led->priv->regmap, reg_val, brightness);
  	if (ret) {
  		dev_err(led->priv->dev,
  			"Cannot write brightness value %d\n", ret);
  		goto out;
  	}
  
  	for (i = 0; i < led->mc_cdev.num_colors; i++) {
  		if (led->ctrl_bank_enabled) {
  			reg_val = led_chip->bank_mix_reg + i;
  		} else {
  			led_offset = (led->led_number * 3) + i;
  			reg_val = led_chip->mix_out0_reg + led_offset;
  		}
  
  		ret = regmap_write(led->priv->regmap, reg_val,
  				   mc_dev->subled_info[i].intensity);
  		if (ret) {
  			dev_err(led->priv->dev,
  				"Cannot write intensity value %d\n", ret);
  			goto out;
  		}
  	}
  out:
  	mutex_unlock(&led->priv->lock);
  	return ret;
  }
  
  static int lp50xx_set_banks(struct lp50xx *priv, u32 led_banks[])
  {
  	u8 led_config_lo, led_config_hi;
  	u32 bank_enable_mask = 0;
  	int ret;
  	int i;
  
  	for (i = 0; i < priv->chip_info->max_modules; i++) {
  		if (led_banks[i])
  			bank_enable_mask |= (1 << led_banks[i]);
  	}
  
  	led_config_lo = bank_enable_mask;
  	led_config_hi = bank_enable_mask >> 8;
  
  	ret = regmap_write(priv->regmap, LP50XX_LED_CFG0, led_config_lo);
  	if (ret)
  		return ret;
  
  	if (priv->chip_info->model_id >= LP5030)
  		ret = regmap_write(priv->regmap, LP5036_LED_CFG1, led_config_hi);
  
  	return ret;
  }
  
  static int lp50xx_reset(struct lp50xx *priv)
  {
  	return regmap_write(priv->regmap, priv->chip_info->reset_reg, LP50XX_SW_RESET);
  }
  
  static int lp50xx_enable_disable(struct lp50xx *priv, int enable_disable)
  {
  	int ret;
  
  	ret = gpiod_direction_output(priv->enable_gpio, enable_disable);
  	if (ret)
  		return ret;
  
  	if (enable_disable)
  		return regmap_write(priv->regmap, LP50XX_DEV_CFG0, LP50XX_CHIP_EN);
  	else
  		return regmap_write(priv->regmap, LP50XX_DEV_CFG0, 0);
  
  }
  
  static int lp50xx_probe_leds(struct fwnode_handle *child, struct lp50xx *priv,
  			     struct lp50xx_led *led, int num_leds)
  {
  	u32 led_banks[LP5036_MAX_LED_MODULES] = {0};
  	int led_number;
  	int ret;
  
  	if (num_leds > 1) {
  		if (num_leds > priv->chip_info->max_modules) {
  			dev_err(priv->dev, "reg property is invalid\n");
  			return -EINVAL;
  		}
  
  		priv->num_of_banked_leds = num_leds;
  
  		ret = fwnode_property_read_u32_array(child, "reg", led_banks, num_leds);
  		if (ret) {
  			dev_err(priv->dev, "reg property is missing\n");
  			return ret;
  		}
  
  		ret = lp50xx_set_banks(priv, led_banks);
  		if (ret) {
  			dev_err(priv->dev, "Cannot setup banked LEDs\n");
  			return ret;
  		}
  
  		led->ctrl_bank_enabled = 1;
  	} else {
  		ret = fwnode_property_read_u32(child, "reg", &led_number);
  		if (ret) {
  			dev_err(priv->dev, "led reg property missing\n");
  			return ret;
  		}
  
  		if (led_number > priv->chip_info->num_leds) {
  			dev_err(priv->dev, "led-sources property is invalid\n");
  			return -EINVAL;
  		}
  
  		led->led_number = led_number;
  	}
  
  	return 0;
  }
  
  static int lp50xx_probe_dt(struct lp50xx *priv)
  {
  	struct fwnode_handle *child = NULL;
  	struct fwnode_handle *led_node = NULL;
  	struct led_init_data init_data = {};
  	struct led_classdev *led_cdev;
  	struct mc_subled *mc_led_info;
  	struct lp50xx_led *led;
  	int ret = -EINVAL;
  	int num_colors;
  	u32 color_id;
  	int i = 0;
  
  	priv->enable_gpio = devm_gpiod_get_optional(priv->dev, "enable", GPIOD_OUT_LOW);
  	if (IS_ERR(priv->enable_gpio))
  		return dev_err_probe(priv->dev, PTR_ERR(priv->enable_gpio),
  				     "Failed to get enable GPIO\n");
  
  	priv->regulator = devm_regulator_get(priv->dev, "vled");
  	if (IS_ERR(priv->regulator))
  		priv->regulator = NULL;
  
  	device_for_each_child_node(priv->dev, child) {
  		led = &priv->leds[i];
  		ret = fwnode_property_count_u32(child, "reg");
  		if (ret < 0) {
  			dev_err(priv->dev, "reg property is invalid\n");
  			goto child_out;
  		}
  
  		ret = lp50xx_probe_leds(child, priv, led, ret);
  		if (ret)
  			goto child_out;
  
  		init_data.fwnode = child;
  		num_colors = 0;
  
  		/*
  		 * There are only 3 LEDs per module otherwise they should be
  		 * banked which also is presented as 3 LEDs.
  		 */
  		mc_led_info = devm_kcalloc(priv->dev, LP50XX_LEDS_PER_MODULE,
  					   sizeof(*mc_led_info), GFP_KERNEL);
  		if (!mc_led_info) {
  			ret = -ENOMEM;
  			goto child_out;
  		}
  
  		fwnode_for_each_child_node(child, led_node) {
  			ret = fwnode_property_read_u32(led_node, "color",
  						       &color_id);
  			if (ret) {
  				dev_err(priv->dev, "Cannot read color\n");
  				goto child_out;
  			}
  
  			mc_led_info[num_colors].color_index = color_id;
  			num_colors++;
  		}
  
  		led->priv = priv;
  		led->mc_cdev.num_colors = num_colors;
  		led->mc_cdev.subled_info = mc_led_info;
  		led_cdev = &led->mc_cdev.led_cdev;
  		led_cdev->brightness_set_blocking = lp50xx_brightness_set;
  
  		ret = devm_led_classdev_multicolor_register_ext(priv->dev,
  						       &led->mc_cdev,
  						       &init_data);
  		if (ret) {
  			dev_err(priv->dev, "led register err: %d\n", ret);
  			goto child_out;
  		}
  		i++;
  		fwnode_handle_put(child);
  	}
  
  	return 0;
  
  child_out:
  	fwnode_handle_put(child);
  	return ret;
  }
  
  static int lp50xx_probe(struct i2c_client *client)
  {
  	struct lp50xx *led;
  	int count;
  	int ret;
  
  	count = device_get_child_node_count(&client->dev);
  	if (!count) {
  		dev_err(&client->dev, "LEDs are not defined in device tree!");
  		return -ENODEV;
  	}
  
  	led = devm_kzalloc(&client->dev, struct_size(led, leds, count),
  			   GFP_KERNEL);
  	if (!led)
  		return -ENOMEM;
  
  	mutex_init(&led->lock);
  	led->client = client;
  	led->dev = &client->dev;
  	led->chip_info = device_get_match_data(&client->dev);
  	i2c_set_clientdata(client, led);
  	led->regmap = devm_regmap_init_i2c(client,
  					led->chip_info->lp50xx_regmap_config);
  	if (IS_ERR(led->regmap)) {
  		ret = PTR_ERR(led->regmap);
  		dev_err(&client->dev, "Failed to allocate register map: %d\n",
  			ret);
  		return ret;
  	}
  
  	ret = lp50xx_reset(led);
  	if (ret)
  		return ret;
  
  	ret = lp50xx_enable_disable(led, 1);
  	if (ret)
  		return ret;
  
  	return lp50xx_probe_dt(led);
  }
  
  static int lp50xx_remove(struct i2c_client *client)
  {
  	struct lp50xx *led = i2c_get_clientdata(client);
  	int ret;
  
  	ret = lp50xx_enable_disable(led, 0);
  	if (ret) {
  		dev_err(led->dev, "Failed to disable chip\n");
  		return ret;
  	}
  
  	if (led->regulator) {
  		ret = regulator_disable(led->regulator);
  		if (ret)
  			dev_err(led->dev, "Failed to disable regulator\n");
  	}
  
  	mutex_destroy(&led->lock);
  
  	return 0;
  }
  
  static const struct i2c_device_id lp50xx_id[] = {
  	{ "lp5009", (kernel_ulong_t)&lp50xx_chip_info_tbl[LP5009] },
  	{ "lp5012", (kernel_ulong_t)&lp50xx_chip_info_tbl[LP5012] },
  	{ "lp5018", (kernel_ulong_t)&lp50xx_chip_info_tbl[LP5018] },
  	{ "lp5024", (kernel_ulong_t)&lp50xx_chip_info_tbl[LP5024] },
  	{ "lp5030", (kernel_ulong_t)&lp50xx_chip_info_tbl[LP5030] },
  	{ "lp5036", (kernel_ulong_t)&lp50xx_chip_info_tbl[LP5036] },
  	{ }
  };
  MODULE_DEVICE_TABLE(i2c, lp50xx_id);
  
  static const struct of_device_id of_lp50xx_leds_match[] = {
  	{ .compatible = "ti,lp5009", .data = &lp50xx_chip_info_tbl[LP5009] },
  	{ .compatible = "ti,lp5012", .data = &lp50xx_chip_info_tbl[LP5012] },
  	{ .compatible = "ti,lp5018", .data = &lp50xx_chip_info_tbl[LP5018] },
  	{ .compatible = "ti,lp5024", .data = &lp50xx_chip_info_tbl[LP5024] },
  	{ .compatible = "ti,lp5030", .data = &lp50xx_chip_info_tbl[LP5030] },
  	{ .compatible = "ti,lp5036", .data = &lp50xx_chip_info_tbl[LP5036] },
  	{}
  };
  MODULE_DEVICE_TABLE(of, of_lp50xx_leds_match);
  
  static struct i2c_driver lp50xx_driver = {
  	.driver = {
  		.name	= "lp50xx",
  		.of_match_table = of_lp50xx_leds_match,
  	},
  	.probe_new	= lp50xx_probe,
  	.remove		= lp50xx_remove,
  	.id_table	= lp50xx_id,
  };
  module_i2c_driver(lp50xx_driver);
  
  MODULE_DESCRIPTION("Texas Instruments LP50XX LED driver");
  MODULE_AUTHOR("Dan Murphy <dmurphy@ti.com>");
  MODULE_LICENSE("GPL v2");
  