[linux-2.6-block.git] / drivers / leds / leds-gpio.c

/*
 * LEDs driver for GPIOs
 *
 * Copyright (C) 2007 8D Technologies inc.
 * Raphael Assenat <raph@8d.com>
 * Copyright (C) 2008 Freescale Semiconductor, Inc.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */
#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);
		}
		led_dat->cdev.dev->of_node = np;
		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 <raph@8d.com>, Trent Piepho <tpiepho@freescale.com>");
MODULE_DESCRIPTION("GPIO LED driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:leds-gpio");
Commit	Line	Data
22e03f3b RA	1	/*
	2	* LEDs driver for GPIOs
	3	*
	4	* Copyright (C) 2007 8D Technologies inc.
	5	* Raphael Assenat <raph@8d.com>
a7d878af	6	* Copyright (C) 2008 Freescale Semiconductor, Inc.
22e03f3b RA	7	*
	8	* This program is free software; you can redistribute it and/or modify
	9	* it under the terms of the GNU General Public License version 2 as
	10	* published by the Free Software Foundation.
	11	*
	12	*/
4cc72346	13	#include <linux/err.h>
16db7f90	14	#include <linux/gpio.h>
5c51277a	15	#include <linux/gpio/consumer.h>
4cc72346	16	#include <linux/kernel.h>
22e03f3b	17	#include <linux/leds.h>
4cc72346	18	#include <linux/module.h>
403097f7	19	#include <linux/of.h>
4cc72346	20	#include <linux/platform_device.h>
a43f2cbb	21	#include <linux/property.h>
5a0e3ad6	22	#include <linux/slab.h>
00852279	23
22e03f3b RA	24	struct gpio_led_data {
22e03f3b RA	25	struct led_classdev cdev;
5c51277a	26	struct gpio_desc *gpiod;
00852279	27	u8 can_sleep;
2146325d	28	u8 blinking;
68620e59	29	gpio_blink_set_t platform_gpio_blink_set;
22e03f3b RA	30	};
22e03f3b RA	31
45808094 HK	32	static inline struct gpio_led_data *
	33	cdev_to_gpio_led_data(struct led_classdev *led_cdev)
	34	{
	35	return container_of(led_cdev, struct gpio_led_data, cdev);
	36	}
	37
22e03f3b RA	38	static void gpio_led_set(struct led_classdev *led_cdev,
	39	enum led_brightness value)
	40	{
45808094	41	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
22e03f3b RA	42	int level;
	43
	44	if (value == LED_OFF)
	45	level = 0;
	46	else
	47	level = 1;
	48
d5b8a090 JA	49	if (led_dat->blinking) {
	50	led_dat->platform_gpio_blink_set(led_dat->gpiod, level,
	51	NULL, NULL);
	52	led_dat->blinking = 0;
2146325d	53	} else {
d5b8a090 JA	54	if (led_dat->can_sleep)
	55	gpiod_set_value_cansleep(led_dat->gpiod, level);
	56	else
5c51277a	57	gpiod_set_value(led_dat->gpiod, level);
2146325d	58	}
22e03f3b RA	59	}
22e03f3b RA	60
d5b8a090 JA	61	static int gpio_led_set_blocking(struct led_classdev *led_cdev,
	62	enum led_brightness value)
	63	{
	64	gpio_led_set(led_cdev, value);
	65	return 0;
	66	}
	67
ca3259b3 HVR	68	static int gpio_blink_set(struct led_classdev *led_cdev,
	69	unsigned long delay_on, unsigned long delay_off)
	70	{
45808094	71	struct gpio_led_data *led_dat = cdev_to_gpio_led_data(led_cdev);
ca3259b3	72
2146325d	73	led_dat->blinking = 1;
c673a2b4	74	return led_dat->platform_gpio_blink_set(led_dat->gpiod, GPIO_LED_BLINK,
2146325d	75	delay_on, delay_off);
ca3259b3 HVR	76	}
ca3259b3 HVR	77
98ea1ea2	78	static int create_gpio_led(const struct gpio_led *template,
a7d878af	79	struct gpio_led_data led_dat, struct device parent,
7ea79ae8	80	struct device_node *np, gpio_blink_set_t blink_set)
a7d878af	81	{
ed88bae6	82	int ret, state;
a7d878af	83
a7d878af TP	84	led_dat->cdev.name = template->name;
a7d878af TP	85	led_dat->cdev.default_trigger = template->default_trigger;
ec98a497	86	led_dat->can_sleep = gpiod_cansleep(led_dat->gpiod);
d5b8a090 JA	87	if (!led_dat->can_sleep)
	88	led_dat->cdev.brightness_set = gpio_led_set;
	89	else
	90	led_dat->cdev.brightness_set_blocking = gpio_led_set_blocking;
2146325d	91	led_dat->blinking = 0;
a7d878af TP	92	if (blink_set) {
	93	led_dat->platform_gpio_blink_set = blink_set;
	94	led_dat->cdev.blink_set = gpio_blink_set;
	95	}
061b5c1d HK	96	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP) {
	97	state = gpiod_get_value_cansleep(led_dat->gpiod);
	98	if (state < 0)
	99	return state;
	100	} else {
ed88bae6	101	state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
061b5c1d	102	}
ed88bae6	103	led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
defb512d RP	104	if (!template->retain_state_suspended)
defb512d RP	105	led_dat->cdev.flags \|= LED_CORE_SUSPENDRESUME;
80d6737b EG	106	if (template->panic_indicator)
80d6737b EG	107	led_dat->cdev.flags \|= LED_PANIC_INDICATOR;
f5808ac1 AJ	108	if (template->retain_state_shutdown)
f5808ac1 AJ	109	led_dat->cdev.flags \|= LED_RETAIN_AT_SHUTDOWN;
a7d878af	110
5c51277a	111	ret = gpiod_direction_output(led_dat->gpiod, state);
a7d878af	112	if (ret < 0)
a99d76f9 JH	113	return ret;
a99d76f9 JH	114
7ea79ae8	115	return devm_of_led_classdev_register(parent, np, &led_dat->cdev);
a7d878af TP	116	}
a7d878af TP	117
a314c5c0 GL	118	struct gpio_leds_priv {
	119	int num_leds;
	120	struct gpio_led_data leds[];
	121	};
22e03f3b	122
a314c5c0	123	static inline int sizeof_gpio_leds_priv(int num_leds)
22e03f3b	124	{
a314c5c0 GL	125	return sizeof(struct gpio_leds_priv) +
a314c5c0 GL	126	(sizeof(struct gpio_led_data) * num_leds);
22e03f3b RA	127	}
22e03f3b RA	128
a43f2cbb	129	static struct gpio_leds_priv gpio_leds_create(struct platform_device pdev)
a7d878af	130	{
a43f2cbb RW	131	struct device *dev = &pdev->dev;
a43f2cbb RW	132	struct fwnode_handle *child;
a314c5c0	133	struct gpio_leds_priv *priv;
127aedc8	134	int count, ret;
a7d878af	135
a43f2cbb	136	count = device_get_child_node_count(dev);
a7d878af	137	if (!count)
04553e92 RS	138	return ERR_PTR(-ENODEV);
04553e92 RS	139
a43f2cbb	140	priv = devm_kzalloc(dev, sizeof_gpio_leds_priv(count), GFP_KERNEL);
a314c5c0	141	if (!priv)
04553e92	142	return ERR_PTR(-ENOMEM);
a7d878af	143
a43f2cbb	144	device_for_each_child_node(dev, child) {
bff23714	145	struct gpio_led_data *led_dat = &priv->leds[priv->num_leds];
0493a4ff	146	struct gpio_led led = {};
a43f2cbb	147	const char *state = NULL;
8ca03da5	148	struct device_node *np = to_of_node(child);
a43f2cbb	149
bec69de8 HK	150	ret = fwnode_property_read_string(child, "label", &led.name);
	151	if (ret && IS_ENABLED(CONFIG_OF) && np)
	152	led.name = np->name;
	153	if (!led.name) {
74b69e52 HK	154	fwnode_handle_put(child);
74b69e52 HK	155	return ERR_PTR(-EINVAL);
29470ea8	156	}
bec69de8	157
4b094797 BB	158	led.gpiod = devm_fwnode_get_gpiod_from_child(dev, NULL, child,
	159	GPIOD_ASIS,
	160	led.name);
b2987d74 AS	161	if (IS_ERR(led.gpiod)) {
	162	fwnode_handle_put(child);
	163	return ERR_CAST(led.gpiod);
	164	}
	165
72b8ad40 LD	166	led_dat->gpiod = led.gpiod;
72b8ad40 LD	167
a43f2cbb RW	168	fwnode_property_read_string(child, "linux,default-trigger",
	169	&led.default_trigger);
	170
d735d25e	171	if (!fwnode_property_read_string(child, "default-state",
a43f2cbb	172	&state)) {
ed88bae6 TP	173	if (!strcmp(state, "keep"))
ed88bae6 TP	174	led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
a314c5c0	175	else if (!strcmp(state, "on"))
ed88bae6 TP	176	led.default_state = LEDS_GPIO_DEFSTATE_ON;
	177	else
	178	led.default_state = LEDS_GPIO_DEFSTATE_OFF;
	179	}
a7d878af	180
a43f2cbb	181	if (fwnode_property_present(child, "retain-state-suspended"))
4270a78d	182	led.retain_state_suspended = 1;
f5808ac1 AJ	183	if (fwnode_property_present(child, "retain-state-shutdown"))
f5808ac1 AJ	184	led.retain_state_shutdown = 1;
80d6737b EG	185	if (fwnode_property_present(child, "panic-indicator"))
80d6737b EG	186	led.panic_indicator = 1;
4270a78d	187
7ea79ae8	188	ret = create_gpio_led(&led, led_dat, dev, np, NULL);
a7d878af	189	if (ret < 0) {
a43f2cbb	190	fwnode_handle_put(child);
74b69e52	191	return ERR_PTR(ret);
a7d878af	192	}
bff23714	193	led_dat->cdev.dev->of_node = np;
65c6b7e3	194	priv->num_leds++;
a7d878af TP	195	}
a7d878af TP	196
a314c5c0	197	return priv;
a314c5c0	198	}
a7d878af	199
a314c5c0 GL	200	static const struct of_device_id of_gpio_leds_match[] = {
	201	{ .compatible = "gpio-leds", },
	202	{},
	203	};
472b854b PP	204
472b854b PP	205	MODULE_DEVICE_TABLE(of, of_gpio_leds_match);
a7d878af	206
45d4c6de LW	207	static struct gpio_desc gpio_led_get_gpiod(struct device dev, int idx,
	208	const struct gpio_led *template)
	209	{
	210	struct gpio_desc *gpiod;
	211	unsigned long flags = GPIOF_OUT_INIT_LOW;
	212	int ret;
	213
	214	/*
	215	* This means the LED does not come from the device tree
	216	* or ACPI, so let's try just getting it by index from the
	217	* device, this will hit the board file, if any and get
	218	* the GPIO from there.
	219	*/
	220	gpiod = devm_gpiod_get_index(dev, NULL, idx, flags);
	221	if (!IS_ERR(gpiod)) {
	222	gpiod_set_consumer_name(gpiod, template->name);
	223	return gpiod;
	224	}
	225	if (PTR_ERR(gpiod) != -ENOENT)
	226	return gpiod;
	227
	228	/*
	229	* This is the legacy code path for platform code that
	230	* still uses GPIO numbers. Ultimately we would like to get
	231	* rid of this block completely.
	232	*/
	233
	234	/* skip leds that aren't available */
	235	if (!gpio_is_valid(template->gpio))
	236	return ERR_PTR(-ENOENT);
	237
	238	if (template->active_low)
	239	flags \|= GPIOF_ACTIVE_LOW;
	240
	241	ret = devm_gpio_request_one(dev, template->gpio, flags,
	242	template->name);
	243	if (ret < 0)
	244	return ERR_PTR(ret);
	245
	246	gpiod = gpio_to_desc(template->gpio);
	247	if (!gpiod)
	248	return ERR_PTR(-EINVAL);
	249
	250	return gpiod;
	251	}
	252
98ea1ea2	253	static int gpio_led_probe(struct platform_device *pdev)
a314c5c0	254	{
87aae1ea	255	struct gpio_led_platform_data *pdata = dev_get_platdata(&pdev->dev);
a314c5c0 GL	256	struct gpio_leds_priv *priv;
	257	int i, ret = 0;
	258
	259	if (pdata && pdata->num_leds) {
198b8611 SK	260	priv = devm_kzalloc(&pdev->dev,
	261	sizeof_gpio_leds_priv(pdata->num_leds),
	262	GFP_KERNEL);
a314c5c0 GL	263	if (!priv)
	264	return -ENOMEM;
	265
	266	priv->num_leds = pdata->num_leds;
	267	for (i = 0; i < priv->num_leds; i++) {
45d4c6de LW	268	const struct gpio_led *template = &pdata->leds[i];
	269	struct gpio_led_data *led_dat = &priv->leds[i];
	270
	271	if (template->gpiod)
	272	led_dat->gpiod = template->gpiod;
	273	else
	274	led_dat->gpiod =
	275	gpio_led_get_gpiod(&pdev->dev,
	276	i, template);
	277	if (IS_ERR(led_dat->gpiod)) {
	278	dev_info(&pdev->dev, "Skipping unavailable LED gpio %d (%s)\n",
	279	template->gpio, template->name);
	280	continue;
	281	}
	282
	283	ret = create_gpio_led(template, led_dat,
7ea79ae8 RM	284	&pdev->dev, NULL,
7ea79ae8 RM	285	pdata->gpio_blink_set);
bc2c0dd8	286	if (ret < 0)
a314c5c0	287	return ret;
a314c5c0 GL	288	}
a314c5c0 GL	289	} else {
a43f2cbb	290	priv = gpio_leds_create(pdev);
04553e92 RS	291	if (IS_ERR(priv))
04553e92 RS	292	return PTR_ERR(priv);
a314c5c0 GL	293	}
	294
	295	platform_set_drvdata(pdev, priv);
	296
	297	return 0;
a7d878af TP	298	}
a7d878af TP	299
707f33ed HS	300	static void gpio_led_shutdown(struct platform_device *pdev)
	301	{
	302	struct gpio_leds_priv *priv = platform_get_drvdata(pdev);
	303	int i;
	304
	305	for (i = 0; i < priv->num_leds; i++) {
	306	struct gpio_led_data *led = &priv->leds[i];
	307
f5808ac1 AJ	308	if (!(led->cdev.flags & LED_RETAIN_AT_SHUTDOWN))
f5808ac1 AJ	309	gpio_led_set(&led->cdev, LED_OFF);
707f33ed HS	310	}
	311	}
	312
a314c5c0 GL	313	static struct platform_driver gpio_led_driver = {
a314c5c0 GL	314	.probe = gpio_led_probe,
707f33ed	315	.shutdown = gpio_led_shutdown,
a314c5c0 GL	316	.driver = {
a314c5c0 GL	317	.name = "leds-gpio",
a43f2cbb	318	.of_match_table = of_gpio_leds_match,
a7d878af	319	},
a7d878af	320	};
a314c5c0	321
892a8843	322	module_platform_driver(gpio_led_driver);
a7d878af TP	323
a7d878af TP	324	MODULE_AUTHOR("Raphael Assenat <raph@8d.com>, Trent Piepho <tpiepho@freescale.com>");
22e03f3b RA	325	MODULE_DESCRIPTION("GPIO LED driver");
22e03f3b RA	326	MODULE_LICENSE("GPL");
892a8843	327	MODULE_ALIAS("platform:leds-gpio");