Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   3)  * Copyright (C) 2015-2019 Texas Instruments Incorporated -  http://www.ti.com/
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   4)  * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   5)  *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   6)  * Based on pwm_bl.c
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   7)  */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300   9) #include <linux/backlight.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  10) #include <linux/leds.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  11) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  12) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  14) struct led_bl_data {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  15) 	struct device		*dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  16) 	struct backlight_device	*bl_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  17) 	struct led_classdev	**leds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  18) 	bool			enabled;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  19) 	int			nb_leds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  20) 	unsigned int		*levels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  21) 	unsigned int		default_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  22) 	unsigned int		max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  25) static void led_bl_set_brightness(struct led_bl_data *priv, int level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  26) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  27) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  28) 	int bkl_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  29) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  30) 	if (priv->levels)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  31) 		bkl_brightness = priv->levels[level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  32) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  33) 		bkl_brightness = level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  34) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  35) 	for (i = 0; i < priv->nb_leds; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  36) 		led_set_brightness(priv->leds[i], bkl_brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  37) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  38) 	priv->enabled = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  39) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  40) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  41) static void led_bl_power_off(struct led_bl_data *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  42) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  43) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  44) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  45) 	if (!priv->enabled)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  46) 		return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  47) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  48) 	for (i = 0; i < priv->nb_leds; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  49) 		led_set_brightness(priv->leds[i], LED_OFF);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  50) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  51) 	priv->enabled = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  52) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  53) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  54) static int led_bl_update_status(struct backlight_device *bl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  55) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  56) 	struct led_bl_data *priv = bl_get_data(bl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  57) 	int brightness = backlight_get_brightness(bl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  58) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  59) 	if (brightness > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  60) 		led_bl_set_brightness(priv, brightness);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  61) 	else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  62) 		led_bl_power_off(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  64) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  65) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  66) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  67) static const struct backlight_ops led_bl_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  68) 	.update_status	= led_bl_update_status,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  69) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  70) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  71) static int led_bl_get_leds(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  72) 			   struct led_bl_data *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  73) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  74) 	int i, nb_leds, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  75) 	struct device_node *node = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  76) 	struct led_classdev **leds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  77) 	unsigned int max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  78) 	unsigned int default_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  79) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  80) 	ret = of_count_phandle_with_args(node, "leds", NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  81) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  82) 		dev_err(dev, "Unable to get led count\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  83) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  84) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  85) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  86) 	nb_leds = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  87) 	if (nb_leds < 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  88) 		dev_err(dev, "At least one LED must be specified!\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  89) 		return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  90) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  91) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  92) 	leds = devm_kzalloc(dev, sizeof(struct led_classdev *) * nb_leds,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  93) 			    GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  94) 	if (!leds)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  95) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  96) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  97) 	for (i = 0; i < nb_leds; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  98) 		leds[i] = devm_of_led_get(dev, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  99) 		if (IS_ERR(leds[i]))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) 			return PTR_ERR(leds[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) 	/* check that the LEDs all have the same brightness range */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) 	max_brightness = leds[0]->max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) 	for (i = 1; i < nb_leds; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) 		if (max_brightness != leds[i]->max_brightness) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) 			dev_err(dev, "LEDs must have identical ranges\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) 			return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) 	/* get the default brightness from the first LED from the list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) 	default_brightness = leds[0]->brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) 	priv->nb_leds = nb_leds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) 	priv->leds = leds;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) 	priv->max_brightness = max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) 	priv->default_brightness = default_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static int led_bl_parse_levels(struct device *dev,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) 			   struct led_bl_data *priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) 	struct device_node *node = dev->of_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) 	int num_levels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) 	u32 value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) 	int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) 	if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) 	num_levels = of_property_count_u32_elems(node, "brightness-levels");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) 	if (num_levels > 1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) 		int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) 		unsigned int db;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) 		u32 *levels = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) 		levels = devm_kzalloc(dev, sizeof(u32) * num_levels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) 				      GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) 		if (!levels)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) 			return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) 		ret = of_property_read_u32_array(node, "brightness-levels",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) 						levels,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) 						num_levels);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) 		if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) 			return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) 		/*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) 		 * Try to map actual LED brightness to backlight brightness
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) 		 * level
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) 		 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) 		db = priv->default_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) 		for (i = 0 ; i < num_levels; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) 			if ((i && db > levels[i-1]) && db <= levels[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) 				break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) 		}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) 		priv->default_brightness = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) 		priv->max_brightness = num_levels - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) 		priv->levels = levels;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) 	} else if (num_levels >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) 		dev_warn(dev, "Not enough levels defined\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) 	ret = of_property_read_u32(node, "default-brightness-level", &value);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) 	if (!ret && value <= priv->max_brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) 		priv->default_brightness = value;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) 	else if (!ret  && value > priv->max_brightness)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) 		dev_warn(dev, "Invalid default brightness. Ignoring it\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static int led_bl_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) 	struct backlight_properties props;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) 	struct led_bl_data *priv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) 	int ret, i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) 	priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) 	if (!priv)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) 		return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) 	platform_set_drvdata(pdev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) 	priv->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) 	ret = led_bl_get_leds(&pdev->dev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) 	if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) 	ret = led_bl_parse_levels(&pdev->dev, priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) 	if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) 		dev_err(&pdev->dev, "Failed to parse DT data\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) 		return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) 	memset(&props, 0, sizeof(struct backlight_properties));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) 	props.type = BACKLIGHT_RAW;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) 	props.max_brightness = priv->max_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) 	props.brightness = priv->default_brightness;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) 	props.power = (priv->default_brightness > 0) ? FB_BLANK_POWERDOWN :
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) 		      FB_BLANK_UNBLANK;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) 	priv->bl_dev = backlight_device_register(dev_name(&pdev->dev),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) 			&pdev->dev, priv, &led_bl_ops, &props);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) 	if (IS_ERR(priv->bl_dev)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) 		dev_err(&pdev->dev, "Failed to register backlight\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) 		return PTR_ERR(priv->bl_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) 	for (i = 0; i < priv->nb_leds; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) 		led_sysfs_disable(priv->leds[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) 	backlight_update_status(priv->bl_dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) static int led_bl_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) 	struct led_bl_data *priv = platform_get_drvdata(pdev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) 	struct backlight_device *bl = priv->bl_dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) 	int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) 	backlight_device_unregister(bl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) 	led_bl_power_off(priv);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) 	for (i = 0; i < priv->nb_leds; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) 		led_sysfs_enable(priv->leds[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) static const struct of_device_id led_bl_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) 	{ .compatible = "led-backlight" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) 	{ }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) MODULE_DEVICE_TABLE(of, led_bl_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) static struct platform_driver led_bl_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) 	.driver		= {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) 		.name		= "led-backlight",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) 		.of_match_table	= of_match_ptr(led_bl_of_match),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) 	.probe		= led_bl_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) 	.remove		= led_bl_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) module_platform_driver(led_bl_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) MODULE_DESCRIPTION("LED based Backlight Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) MODULE_LICENSE("GPL");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) MODULE_ALIAS("platform:led-backlight");