[linux.git] / drivers / leds / leds-gpio.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * LEDs driver for GPIOs
 *
 * Copyright (C) 2007 8D Technologies inc.
 * Raphael Assenat <[email protected]>
 * Copyright (C) 2008 Freescale Semiconductor, Inc.
 */
#include <linux/err.h>
#include <linux/gpio.h>
#include <linux/gpio/consumer.h>
#include <linux/kernel.h>
#include <linux/leds.h>
#include <linux/module.h>
#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/property.h>
#include <linux/slab.h>

struct gpio_led_data {
	struct led_classdev cdev;
	struct gpio_desc *gpiod;
	u8 can_sleep;
	u8 blinking;
	gpio_blink_set_t platform_gpio_blink_set;
};

static inline struct gpio_led_data *
			cdev_to_gpio_led_data(struct led_classdev *led_cdev)
{
	return container_of(led_cdev, struct gpio_led_data, cdev);
}

static void gpio_led_set(struct led_classdev *led_cdev,
	enum led_brightness value)
{
	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
	int level;

	if (value == LED_OFF)
		level = 0;
	else
		level = 1;

	if (led_dat->blinking) {
		led_dat->platform_gpio_blink_set(led_dat->gpiod, level,
						 NULL, NULL);
		led_dat->blinking = 0;
	} else {
		if (led_dat->can_sleep)
			gpiod_set_value_cansleep(led_dat->gpiod, level);
		else
			gpiod_set_value(led_dat->gpiod, level);
	}
}

static int gpio_led_set_blocking(struct led_classdev *led_cdev,
	enum led_brightness value)
{
	gpio_led_set(led_cdev, value);
	return 0;
}

static int gpio_blink_set(struct led_classdev *led_cdev,
	unsigned long *delay_on, unsigned long *delay_off)
{
	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);

	led_dat->blinking = 1;
	return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,
						delay_on, delay_off);
}

static int create_gpio_led(const struct gpio_led *template,
	struct gpio_led_data *led_dat, struct device *parent,
	struct device_node *np, gpio_blink_set_t blink_set)
{
	int ret, state;

	led_dat->cdev.name = template->name;
	led_dat->cdev.default_trigger = template->default_trigger;
	led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);
	if (!led_dat->can_sleep)
		led_dat->cdev.brightness_set = gpio_led_set;
	else
		led_dat->cdev.brightness_set_blocking = gpio_led_set_blocking;
	led_dat->blinking = 0;
	if (blink_set) {
		led_dat->platform_gpio_blink_set = blink_set;
		led_dat->cdev.blink_set = gpio_blink_set;
	}
	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
		state = gpiod_get_value_cansleep(led_dat->gpiod);
		if (state < 0)
			return state;
	} else {
		state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
	}
	led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
	if (!template->retain_state_suspended)
		led_dat->cdev.flags |= LED_CORE_SUSPENDRESUME;
	if (template->panic_indicator)
		led_dat->cdev.flags |= LED_PANIC_INDICATOR;
	if (template->retain_state_shutdown)
		led_dat->cdev.flags |= LED_RETAIN_AT_SHUTDOWN;

	ret = gpiod_direction_output(led_dat->gpiod, state);
	if (ret < 0)
		return ret;

	return devm_of_led_classdev_register(parent, np, &led_dat->cdev);
}

struct gpio_leds_priv {
	int num_leds;
	struct gpio_led_data leds[];
};

static inline int sizeof_gpio_leds_priv(int num_leds)
{
	return sizeof(struct gpio_leds_priv) +
		(sizeof(struct gpio_led_data) * num_leds);
}

static struct gpio_leds_priv *gpio_leds_create(struct platform_device *pdev)
{
	struct device *dev = &pdev->dev;
	struct fwnode_handle *child;
	struct gpio_leds_priv *priv;
	int count, ret;

	count = device_get_child_node_count(dev);
	if (!count)
		return ERR_PTR(-ENODEV);

	priv = devm_kzalloc(dev, sizeof_gpio_leds_priv(count), GFP_KERNEL);
	if (!priv)
		return ERR_PTR(-ENOMEM);

	device_for_each_child_node(dev, child) {
		struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
		struct gpio_led led = {};
		const char *state = NULL;
		struct device_node *np = to_of_node(child);

		ret = fwnode_property_read_string(child, "label", &led.name);
		if (ret && IS_ENABLED(CONFIG_OF) && np)
			led.name = np->name;
		if (!led.name) {
			fwnode_handle_put(child);
			return ERR_PTR(-EINVAL);
		}

		led.gpiod = devm_fwnode_get_gpiod_from_child(dev, NULL, child,
							     GPIOD_ASIS,
							     led.name);
		if (IS_ERR(led.gpiod)) {
			fwnode_handle_put(child);
			return ERR_CAST(led.gpiod);
		}

		led_dat->gpiod = led.gpiod;

		fwnode_property_read_string(child, "linux,default-trigger",
					    &led.default_trigger);

		if (!fwnode_property_read_string(child, "default-state",
						 &state)) {
			if (!strcmp(state, "keep"))
				led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
			else if (!strcmp(state, "on"))
				led.default_state = LEDS_GPIO_DEFSTATE_ON;
			else
				led.default_state = LEDS_GPIO_DEFSTATE_OFF;
		}

		if (fwnode_property_present(child, "retain-state-suspended"))
			led.retain_state_suspended = 1;
		if (fwnode_property_present(child, "retain-state-shutdown"))
			led.retain_state_shutdown = 1;
		if (fwnode_property_present(child, "panic-indicator"))
			led.panic_indicator = 1;

		ret = create_gpio_led(&led, led_dat, dev, np, NULL);
		if (ret < 0) {
			fwnode_handle_put(child);
			return ERR_PTR(ret);
		}
		priv->num_leds++;
	}

	return priv;
}

static const struct of_device_id of_gpio_leds_match[] = {
	{ .compatible = "gpio-leds", },
	{},
};

MODULE_DEVICE_TABLE(of, of_gpio_leds_match);

static struct gpio_desc *gpio_led_get_gpiod(struct device *dev, int idx,
					    const struct gpio_led *template)
{
	struct gpio_desc *gpiod;
	unsigned long flags = GPIOF_OUT_INIT_LOW;
	int ret;

	/*
	 * This means the LED does not come from the device tree
	 * or ACPI, so let's try just getting it by index from the
	 * device, this will hit the board file, if any and get
	 * the GPIO from there.
	 */
	gpiod = devm_gpiod_get_index(dev, NULL, idx, flags);
	if (!IS_ERR(gpiod)) {
		gpiod_set_consumer_name(gpiod, template->name);
		return gpiod;
	}
	if (PTR_ERR(gpiod) != -ENOENT)
		return gpiod;

	/*
	 * This is the legacy code path for platform code that
	 * still uses GPIO numbers. Ultimately we would like to get
	 * rid of this block completely.
	 */

	/* skip leds that aren't available */
	if (!gpio_is_valid(template->gpio))
		return ERR_PTR(-ENOENT);

	if (template->active_low)
		flags |= GPIOF_ACTIVE_LOW;

	ret = devm_gpio_request_one(dev, template->gpio, flags,
				    template->name);
	if (ret < 0)
		return ERR_PTR(ret);

	gpiod = gpio_to_desc(template->gpio);
	if (!gpiod)
		return ERR_PTR(-EINVAL);

	return gpiod;
}

static int gpio_led_probe(struct platform_device *pdev)
{
	struct gpio_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
	struct gpio_leds_priv *priv;
	int i, ret = 0;

	if (pdata && pdata->num_leds) {
		priv = devm_kzalloc(&pdev->dev,
				sizeof_gpio_leds_priv(pdata->num_leds),
					GFP_KERNEL);
		if (!priv)
			return -ENOMEM;

		priv->num_leds = pdata->num_leds;
		for (i = 0; i < priv->num_leds; i++) {
			const struct gpio_led *template = &pdata->leds[i];
			struct gpio_led_data *led_dat = &priv->leds[i];

			if (template->gpiod)
				led_dat->gpiod = template->gpiod;
			else
				led_dat->gpiod =
					gpio_led_get_gpiod(&pdev->dev,
							   i, template);
			if (IS_ERR(led_dat->gpiod)) {
				dev_info(&pdev->dev, "Skipping unavailable LED gpio %d (%s)\n",
					 template->gpio, template->name);
				continue;
			}

			ret = create_gpio_led(template, led_dat,
					      &pdev->dev, NULL,
					      pdata->gpio_blink_set);
			if (ret < 0)
				return ret;
		}
	} else {
		priv = gpio_leds_create(pdev);
		if (IS_ERR(priv))
			return PTR_ERR(priv);
	}

	platform_set_drvdata(pdev, priv);

	return 0;
}

static void gpio_led_shutdown(struct platform_device *pdev)
{
	struct gpio_leds_priv *priv = platform_get_drvdata(pdev);
	int i;

	for (i = 0; i < priv->num_leds; i++) {
		struct gpio_led_data *led = &priv->leds[i];

		if (!(led->cdev.flags & LED_RETAIN_AT_SHUTDOWN))
			gpio_led_set(&led->cdev, LED_OFF);
	}
}

static struct platform_driver gpio_led_driver = {
	.probe		= gpio_led_probe,
	.shutdown	= gpio_led_shutdown,
	.driver		= {
		.name	= "leds-gpio",
		.of_match_table = of_gpio_leds_match,
	},
};

module_platform_driver(gpio_led_driver);

MODULE_AUTHOR("Raphael Assenat <[email protected]>, Trent Piepho <[email protected]>");
MODULE_DESCRIPTION("GPIO LED driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:leds-gpio");
Commit	Line	Data
d2912cb1	1	// SPDX-License-Identifier: GPL-2.0-only
22e03f3b RA	2	/*
	3	* LEDs driver for GPIOs
	4	*
	5	* Copyright (C) 2007 8D Technologies inc.
	6	* Raphael Assenat <[email protected]>
a7d878af	7	* Copyright (C) 2008 Freescale Semiconductor, Inc.
22e03f3b	8	*/
4cc72346	9	#include <linux/err.h>
16db7f90	10	#include <linux/gpio.h>
5c51277a	11	#include <linux/gpio/consumer.h>
4cc72346	12	#include <linux/kernel.h>
22e03f3b	13	#include <linux/leds.h>
4cc72346	14	#include <linux/module.h>
403097f7	15	#include <linux/of.h>
4cc72346	16	#include <linux/platform_device.h>
a43f2cbb	17	#include <linux/property.h>
5a0e3ad6	18	#include <linux/slab.h>
00852279	19
22e03f3b RA	20	struct gpio_led_data {
22e03f3b RA	21	struct led_classdev cdev;
5c51277a	22	struct gpio_desc *gpiod;
00852279	23	u8 can_sleep;
2146325d	24	u8 blinking;
68620e59	25	gpio_blink_set_t platform_gpio_blink_set;
22e03f3b RA	26	};
22e03f3b RA	27
45808094 HK	28	static inline struct gpio_led_data *
	29	cdev_to_gpio_led_data(struct led_classdev *led_cdev)
	30	{
	31	return container_of(led_cdev, struct gpio_led_data, cdev);
	32	}
	33
22e03f3b RA	34	static void gpio_led_set(struct led_classdev *led_cdev,
	35	enum led_brightness value)
	36	{
45808094	37	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
22e03f3b RA	38	int level;
	39
	40	if (value == LED_OFF)
	41	level = 0;
	42	else
	43	level = 1;
	44
d5b8a090 JA	45	if (led_dat->blinking) {
	46	led_dat->platform_gpio_blink_set(led_dat->gpiod, level,
	47	NULL, NULL);
	48	led_dat->blinking = 0;
2146325d	49	} else {
d5b8a090 JA	50	if (led_dat->can_sleep)
	51	gpiod_set_value_cansleep(led_dat->gpiod, level);
	52	else
5c51277a	53	gpiod_set_value(led_dat->gpiod, level);
2146325d	54	}
22e03f3b RA	55	}
22e03f3b RA	56
d5b8a090 JA	57	static int gpio_led_set_blocking(struct led_classdev *led_cdev,
	58	enum led_brightness value)
	59	{
	60	gpio_led_set(led_cdev, value);
	61	return 0;
	62	}
	63
ca3259b3 HVR	64	static int gpio_blink_set(struct led_classdev *led_cdev,
	65	unsigned long delay_on, unsigned long delay_off)
	66	{
45808094	67	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
ca3259b3	68
2146325d	69	led_dat->blinking = 1;
c673a2b4	70	return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,
2146325d	71	delay_on, delay_off);
ca3259b3 HVR	72	}
ca3259b3 HVR	73
98ea1ea2	74	static int create_gpio_led(const struct gpio_led *template,
a7d878af	75	struct gpio_led_data led_dat, struct device parent,
7ea79ae8	76	struct device_node *np, gpio_blink_set_t blink_set)
a7d878af	77	{
ed88bae6	78	int ret, state;
a7d878af	79
a7d878af TP	80	led_dat->cdev.name = template->name;
a7d878af TP	81	led_dat->cdev.default_trigger = template->default_trigger;
ec98a497	82	led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);
d5b8a090 JA	83	if (!led_dat->can_sleep)
	84	led_dat->cdev.brightness_set = gpio_led_set;
	85	else
	86	led_dat->cdev.brightness_set_blocking = gpio_led_set_blocking;
2146325d	87	led_dat->blinking = 0;
a7d878af TP	88	if (blink_set) {
	89	led_dat->platform_gpio_blink_set = blink_set;
	90	led_dat->cdev.blink_set = gpio_blink_set;
	91	}
061b5c1d HK	92	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
	93	state = gpiod_get_value_cansleep(led_dat->gpiod);
	94	if (state < 0)
	95	return state;
	96	} else {
ed88bae6	97	state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
061b5c1d	98	}
ed88bae6	99	led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
defb512d RP	100	if (!template->retain_state_suspended)
defb512d RP	101	led_dat->cdev.flags \|= LED_CORE_SUSPENDRESUME;
80d6737b EG	102	if (template->panic_indicator)
80d6737b EG	103	led_dat->cdev.flags \|= LED_PANIC_INDICATOR;
f5808ac1 AJ	104	if (template->retain_state_shutdown)
f5808ac1 AJ	105	led_dat->cdev.flags \|= LED_RETAIN_AT_SHUTDOWN;
a7d878af	106
5c51277a	107	ret = gpiod_direction_output(led_dat->gpiod, state);
a7d878af	108	if (ret < 0)
a99d76f9 JH	109	return ret;
a99d76f9 JH	110
7ea79ae8	111	return devm_of_led_classdev_register(parent, np, &led_dat->cdev);
a7d878af TP	112	}
a7d878af TP	113
a314c5c0 GL	114	struct gpio_leds_priv {
	115	int num_leds;
	116	struct gpio_led_data leds[];
	117	};
22e03f3b	118
a314c5c0	119	static inline int sizeof_gpio_leds_priv(int num_leds)
22e03f3b	120	{
a314c5c0 GL	121	return sizeof(struct gpio_leds_priv) +
a314c5c0 GL	122	(sizeof(struct gpio_led_data) * num_leds);
22e03f3b RA	123	}
22e03f3b RA	124
a43f2cbb	125	static struct gpio_leds_priv gpio_leds_create(struct platform_device pdev)
a7d878af	126	{
a43f2cbb RW	127	struct device *dev = &pdev->dev;
a43f2cbb RW	128	struct fwnode_handle *child;
a314c5c0	129	struct gpio_leds_priv *priv;
127aedc8	130	int count, ret;
a7d878af	131
a43f2cbb	132	count = device_get_child_node_count(dev);
a7d878af	133	if (!count)
04553e92 RS	134	return ERR_PTR(-ENODEV);
04553e92 RS	135
a43f2cbb	136	priv = devm_kzalloc(dev, sizeof_gpio_leds_priv(count), GFP_KERNEL);
a314c5c0	137	if (!priv)
04553e92	138	return ERR_PTR(-ENOMEM);
a7d878af	139
a43f2cbb	140	device_for_each_child_node(dev, child) {
bff23714	141	struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
0493a4ff	142	struct gpio_led led = {};
a43f2cbb	143	const char *state = NULL;
8ca03da5	144	struct device_node *np = to_of_node(child);
a43f2cbb	145
bec69de8 HK	146	ret = fwnode_property_read_string(child, "label", &led.name);
	147	if (ret && IS_ENABLED(CONFIG_OF) && np)
	148	led.name = np->name;
	149	if (!led.name) {
74b69e52 HK	150	fwnode_handle_put(child);
74b69e52 HK	151	return ERR_PTR(-EINVAL);
29470ea8	152	}
bec69de8	153
4b094797 BB	154	led.gpiod = devm_fwnode_get_gpiod_from_child(dev, NULL, child,
	155	GPIOD_ASIS,
	156	led.name);
b2987d74 AS	157	if (IS_ERR(led.gpiod)) {
	158	fwnode_handle_put(child);
	159	return ERR_CAST(led.gpiod);
	160	}
	161
72b8ad40 LD	162	led_dat->gpiod = led.gpiod;
72b8ad40 LD	163
a43f2cbb RW	164	fwnode_property_read_string(child, "linux,default-trigger",
	165	&led.default_trigger);
	166
d735d25e	167	if (!fwnode_property_read_string(child, "default-state",
a43f2cbb	168	&state)) {
ed88bae6 TP	169	if (!strcmp(state, "keep"))
ed88bae6 TP	170	led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
a314c5c0	171	else if (!strcmp(state, "on"))
ed88bae6 TP	172	led.default_state = LEDS_GPIO_DEFSTATE_ON;
	173	else
	174	led.default_state = LEDS_GPIO_DEFSTATE_OFF;
	175	}
a7d878af	176
a43f2cbb	177	if (fwnode_property_present(child, "retain-state-suspended"))
4270a78d	178	led.retain_state_suspended = 1;
f5808ac1 AJ	179	if (fwnode_property_present(child, "retain-state-shutdown"))
f5808ac1 AJ	180	led.retain_state_shutdown = 1;
80d6737b EG	181	if (fwnode_property_present(child, "panic-indicator"))
80d6737b EG	182	led.panic_indicator = 1;
4270a78d	183
7ea79ae8	184	ret = create_gpio_led(&led, led_dat, dev, np, NULL);
a7d878af	185	if (ret < 0) {
a43f2cbb	186	fwnode_handle_put(child);
74b69e52	187	return ERR_PTR(ret);
a7d878af	188	}
65c6b7e3	189	priv->num_leds++;
a7d878af TP	190	}
a7d878af TP	191
a314c5c0	192	return priv;
a314c5c0	193	}
a7d878af	194
a314c5c0 GL	195	static const struct of_device_id of_gpio_leds_match[] = {
	196	{ .compatible = "gpio-leds", },
	197	{},
	198	};
472b854b PP	199
472b854b PP	200	MODULE_DEVICE_TABLE(of, of_gpio_leds_match);
a7d878af	201
45d4c6de LW	202	static struct gpio_desc gpio_led_get_gpiod(struct device dev, int idx,
	203	const struct gpio_led *template)
	204	{
	205	struct gpio_desc *gpiod;
	206	unsigned long flags = GPIOF_OUT_INIT_LOW;
	207	int ret;
	208
	209	/*
	210	* This means the LED does not come from the device tree
	211	* or ACPI, so let's try just getting it by index from the
	212	* device, this will hit the board file, if any and get
	213	* the GPIO from there.
	214	*/
	215	gpiod = devm_gpiod_get_index(dev, NULL, idx, flags);
	216	if (!IS_ERR(gpiod)) {
	217	gpiod_set_consumer_name(gpiod, template->name);
	218	return gpiod;
	219	}
	220	if (PTR_ERR(gpiod) != -ENOENT)
	221	return gpiod;
	222
	223	/*
	224	* This is the legacy code path for platform code that
	225	* still uses GPIO numbers. Ultimately we would like to get
	226	* rid of this block completely.
	227	*/
	228
	229	/* skip leds that aren't available */
	230	if (!gpio_is_valid(template->gpio))
	231	return ERR_PTR(-ENOENT);
	232
	233	if (template->active_low)
	234	flags \|= GPIOF_ACTIVE_LOW;
	235
	236	ret = devm_gpio_request_one(dev, template->gpio, flags,
	237	template->name);
	238	if (ret < 0)
	239	return ERR_PTR(ret);
	240
	241	gpiod = gpio_to_desc(template->gpio);
	242	if (!gpiod)
	243	return ERR_PTR(-EINVAL);
	244
	245	return gpiod;
	246	}
	247
98ea1ea2	248	static int gpio_led_probe(struct platform_device *pdev)
a314c5c0	249	{
87aae1ea	250	struct gpio_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
a314c5c0 GL	251	struct gpio_leds_priv *priv;
	252	int i, ret = 0;
	253
	254	if (pdata && pdata->num_leds) {
198b8611 SK	255	priv = devm_kzalloc(&pdev->dev,
	256	sizeof_gpio_leds_priv(pdata->num_leds),
	257	GFP_KERNEL);
a314c5c0 GL	258	if (!priv)
	259	return -ENOMEM;
	260
	261	priv->num_leds = pdata->num_leds;
	262	for (i = 0; i < priv->num_leds; i++) {
45d4c6de LW	263	const struct gpio_led *template = &pdata->leds[i];
	264	struct gpio_led_data *led_dat = &priv->leds[i];
	265
	266	if (template->gpiod)
	267	led_dat->gpiod = template->gpiod;
	268	else
	269	led_dat->gpiod =
	270	gpio_led_get_gpiod(&pdev->dev,
	271	i, template);
	272	if (IS_ERR(led_dat->gpiod)) {
	273	dev_info(&pdev->dev, "Skipping unavailable LED gpio %d (%s)\n",
	274	template->gpio, template->name);
	275	continue;
	276	}
	277
	278	ret = create_gpio_led(template, led_dat,
7ea79ae8 RM	279	&pdev->dev, NULL,
7ea79ae8 RM	280	pdata->gpio_blink_set);
bc2c0dd8	281	if (ret < 0)
a314c5c0	282	return ret;
a314c5c0 GL	283	}
a314c5c0 GL	284	} else {
a43f2cbb	285	priv = gpio_leds_create(pdev);
04553e92 RS	286	if (IS_ERR(priv))
04553e92 RS	287	return PTR_ERR(priv);
a314c5c0 GL	288	}
	289
	290	platform_set_drvdata(pdev, priv);
	291
	292	return 0;
a7d878af TP	293	}
a7d878af TP	294
707f33ed HS	295	static void gpio_led_shutdown(struct platform_device *pdev)
	296	{
	297	struct gpio_leds_priv *priv = platform_get_drvdata(pdev);
	298	int i;
	299
	300	for (i = 0; i < priv->num_leds; i++) {
	301	struct gpio_led_data *led = &priv->leds[i];
	302
f5808ac1 AJ	303	if (!(led->cdev.flags & LED_RETAIN_AT_SHUTDOWN))
f5808ac1 AJ	304	gpio_led_set(&led->cdev, LED_OFF);
707f33ed HS	305	}
	306	}
	307
a314c5c0 GL	308	static struct platform_driver gpio_led_driver = {
a314c5c0 GL	309	.probe = gpio_led_probe,
707f33ed	310	.shutdown = gpio_led_shutdown,
a314c5c0 GL	311	.driver = {
a314c5c0 GL	312	.name = "leds-gpio",
a43f2cbb	313	.of_match_table = of_gpio_leds_match,
a7d878af	314	},
a7d878af	315	};
a314c5c0	316
892a8843	317	module_platform_driver(gpio_led_driver);
a7d878af TP	318
a7d878af TP	319	MODULE_AUTHOR("Raphael Assenat <[email protected]>, Trent Piepho <[email protected]>");
22e03f3b RA	320	MODULE_DESCRIPTION("GPIO LED driver");
22e03f3b RA	321	MODULE_LICENSE("GPL");
892a8843	322	MODULE_ALIAS("platform:leds-gpio");