[net-next-2.6.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/kernel.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/leds.h>
#include <linux/slab.h>
#include <linux/workqueue.h>

#include <asm/gpio.h>

struct gpio_led_data {
	struct led_classdev cdev;
	unsigned gpio;
	struct work_struct work;
	u8 new_level;
	u8 can_sleep;
	u8 active_low;
	u8 blinking;
	int (*platform_gpio_blink_set)(unsigned gpio, int state,
			unsigned long *delay_on, unsigned long *delay_off);
};

static void gpio_led_work(struct work_struct *work)
{
	struct gpio_led_data	*led_dat =
		container_of(work, struct gpio_led_data, work);

	if (led_dat->blinking) {
		led_dat->platform_gpio_blink_set(led_dat->gpio,
						 led_dat->new_level,
						 NULL, NULL);
		led_dat->blinking = 0;
	} else
		gpio_set_value_cansleep(led_dat->gpio, led_dat->new_level);
}

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

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

	if (led_dat->active_low)
		level = !level;

	/* Setting GPIOs with I2C/etc requires a task context, and we don't
	 * seem to have a reliable way to know if we're already in one; so
	 * let's just assume the worst.
	 */
	if (led_dat->can_sleep) {
		led_dat->new_level = level;
		schedule_work(&led_dat->work);
	} else {
		if (led_dat->blinking) {
			led_dat->platform_gpio_blink_set(led_dat->gpio, level,
							 NULL, NULL);
			led_dat->blinking = 0;
		} else
			gpio_set_value(led_dat->gpio, level);
	}
}

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

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

static int __devinit create_gpio_led(const struct gpio_led *template,
	struct gpio_led_data *led_dat, struct device *parent,
	int (*blink_set)(unsigned, int, unsigned long *, unsigned long *))
{
	int ret, state;

	led_dat->gpio = -1;

	/* skip leds that aren't available */
	if (!gpio_is_valid(template->gpio)) {
		printk(KERN_INFO "Skipping unavailable LED gpio %d (%s)\n",
				template->gpio, template->name);
		return 0;
	}

	ret = gpio_request(template->gpio, template->name);
	if (ret < 0)
		return ret;

	led_dat->cdev.name = template->name;
	led_dat->cdev.default_trigger = template->default_trigger;
	led_dat->gpio = template->gpio;
	led_dat->can_sleep = gpio_cansleep(template->gpio);
	led_dat->active_low = template->active_low;
	led_dat->blinking = 0;
	if (blink_set) {
		led_dat->platform_gpio_blink_set = blink_set;
		led_dat->cdev.blink_set = gpio_blink_set;
	}
	led_dat->cdev.brightness_set = gpio_led_set;
	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP)
		state = !!gpio_get_value(led_dat->gpio) ^ led_dat->active_low;
	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;

	ret = gpio_direction_output(led_dat->gpio, led_dat->active_low ^ state);
	if (ret < 0)
		goto err;
		
	INIT_WORK(&led_dat->work, gpio_led_work);

	ret = led_classdev_register(parent, &led_dat->cdev);
	if (ret < 0)
		goto err;

	return 0;
err:
	gpio_free(led_dat->gpio);
	return ret;
}

static void delete_gpio_led(struct gpio_led_data *led)
{
	if (!gpio_is_valid(led->gpio))
		return;
	led_classdev_unregister(&led->cdev);
	cancel_work_sync(&led->work);
	gpio_free(led->gpio);
}

#ifdef CONFIG_LEDS_GPIO_PLATFORM
static int __devinit gpio_led_probe(struct platform_device *pdev)
{
	struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
	struct gpio_led_data *leds_data;
	int i, ret = 0;

	if (!pdata)
		return -EBUSY;

	leds_data = kzalloc(sizeof(struct gpio_led_data) * pdata->num_leds,
				GFP_KERNEL);
	if (!leds_data)
		return -ENOMEM;

	for (i = 0; i < pdata->num_leds; i++) {
		ret = create_gpio_led(&pdata->leds[i], &leds_data[i],
				      &pdev->dev, pdata->gpio_blink_set);
		if (ret < 0)
			goto err;
	}

	platform_set_drvdata(pdev, leds_data);

	return 0;

err:
	for (i = i - 1; i >= 0; i--)
		delete_gpio_led(&leds_data[i]);

	kfree(leds_data);

	return ret;
}

static int __devexit gpio_led_remove(struct platform_device *pdev)
{
	int i;
	struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
	struct gpio_led_data *leds_data;

	leds_data = platform_get_drvdata(pdev);

	for (i = 0; i < pdata->num_leds; i++)
		delete_gpio_led(&leds_data[i]);

	kfree(leds_data);

	return 0;
}

static struct platform_driver gpio_led_driver = {
	.probe		= gpio_led_probe,
	.remove		= __devexit_p(gpio_led_remove),
	.driver		= {
		.name	= "leds-gpio",
		.owner	= THIS_MODULE,
	},
};

MODULE_ALIAS("platform:leds-gpio");
#endif /* CONFIG_LEDS_GPIO_PLATFORM */

/* Code to create from OpenFirmware platform devices */
#ifdef CONFIG_LEDS_GPIO_OF
#include <linux/of_platform.h>
#include <linux/of_gpio.h>

struct gpio_led_of_platform_data {
	int num_leds;
	struct gpio_led_data led_data[];
};

static int __devinit of_gpio_leds_probe(struct platform_device *ofdev,
					const struct of_device_id *match)
{
	struct device_node *np = ofdev->dev.of_node, *child;
	struct gpio_led_of_platform_data *pdata;
	int count = 0, ret;

	/* count LEDs defined by this device, so we know how much to allocate */
	for_each_child_of_node(np, child)
		count++;
	if (!count)
		return 0; /* or ENODEV? */

	pdata = kzalloc(sizeof(*pdata) + sizeof(struct gpio_led_data) * count,
			GFP_KERNEL);
	if (!pdata)
		return -ENOMEM;

	for_each_child_of_node(np, child) {
		struct gpio_led led = {};
		enum of_gpio_flags flags;
		const char *state;

		led.gpio = of_get_gpio_flags(child, 0, &flags);
		led.active_low = flags & OF_GPIO_ACTIVE_LOW;
		led.name = of_get_property(child, "label", NULL) ? : child->name;
		led.default_trigger =
			of_get_property(child, "linux,default-trigger", NULL);
		state = of_get_property(child, "default-state", NULL);
		if (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;
		}

		ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++],
				      &ofdev->dev, NULL);
		if (ret < 0) {
			of_node_put(child);
			goto err;
		}
	}

	dev_set_drvdata(&ofdev->dev, pdata);

	return 0;

err:
	for (count = pdata->num_leds - 2; count >= 0; count--)
		delete_gpio_led(&pdata->led_data[count]);

	kfree(pdata);

	return ret;
}

static int __devexit of_gpio_leds_remove(struct platform_device *ofdev)
{
	struct gpio_led_of_platform_data *pdata = dev_get_drvdata(&ofdev->dev);
	int i;

	for (i = 0; i < pdata->num_leds; i++)
		delete_gpio_led(&pdata->led_data[i]);

	kfree(pdata);

	dev_set_drvdata(&ofdev->dev, NULL);

	return 0;
}

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

static struct of_platform_driver of_gpio_leds_driver = {
	.driver = {
		.name = "of_gpio_leds",
		.owner = THIS_MODULE,
		.of_match_table = of_gpio_leds_match,
	},
	.probe = of_gpio_leds_probe,
	.remove = __devexit_p(of_gpio_leds_remove),
};
#endif

static int __init gpio_led_init(void)
{
	int ret = 0;

#ifdef CONFIG_LEDS_GPIO_PLATFORM	
	ret = platform_driver_register(&gpio_led_driver);
	if (ret)
		return ret;
#endif
#ifdef CONFIG_LEDS_GPIO_OF
	ret = of_register_platform_driver(&of_gpio_leds_driver);
#endif
#ifdef CONFIG_LEDS_GPIO_PLATFORM	
	if (ret)
		platform_driver_unregister(&gpio_led_driver);
#endif

	return ret;
}

static void __exit gpio_led_exit(void)
{
#ifdef CONFIG_LEDS_GPIO_PLATFORM
	platform_driver_unregister(&gpio_led_driver);
#endif
#ifdef CONFIG_LEDS_GPIO_OF
	of_unregister_platform_driver(&of_gpio_leds_driver);
#endif
}

module_init(gpio_led_init);
module_exit(gpio_led_exit);

MODULE_AUTHOR("Raphael Assenat <raph@8d.com>, Trent Piepho <tpiepho@freescale.com>");
MODULE_DESCRIPTION("GPIO LED driver");
MODULE_LICENSE("GPL");
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	*/
	13	#include <linux/kernel.h>
	14	#include <linux/init.h>
	15	#include <linux/platform_device.h>
	16	#include <linux/leds.h>
5a0e3ad6	17	#include <linux/slab.h>
00852279 DB	18	#include <linux/workqueue.h>
00852279 DB	19
22e03f3b RA	20	#include <asm/gpio.h>
	21
	22	struct gpio_led_data {
	23	struct led_classdev cdev;
	24	unsigned gpio;
00852279 DB	25	struct work_struct work;
	26	u8 new_level;
	27	u8 can_sleep;
22e03f3b	28	u8 active_low;
2146325d BH	29	u8 blinking;
2146325d BH	30	int (*platform_gpio_blink_set)(unsigned gpio, int state,
ca3259b3	31	unsigned long delay_on, unsigned long delay_off);
22e03f3b RA	32	};
22e03f3b RA	33
00852279 DB	34	static void gpio_led_work(struct work_struct *work)
	35	{
	36	struct gpio_led_data *led_dat =
	37	container_of(work, struct gpio_led_data, work);
	38
2146325d BH	39	if (led_dat->blinking) {
	40	led_dat->platform_gpio_blink_set(led_dat->gpio,
	41	led_dat->new_level,
	42	NULL, NULL);
	43	led_dat->blinking = 0;
	44	} else
	45	gpio_set_value_cansleep(led_dat->gpio, led_dat->new_level);
00852279	46	}
22e03f3b RA	47
	48	static void gpio_led_set(struct led_classdev *led_cdev,
	49	enum led_brightness value)
	50	{
	51	struct gpio_led_data *led_dat =
	52	container_of(led_cdev, struct gpio_led_data, cdev);
	53	int level;
	54
	55	if (value == LED_OFF)
	56	level = 0;
	57	else
	58	level = 1;
	59
	60	if (led_dat->active_low)
	61	level = !level;
	62
306dd85c DB	63	/* Setting GPIOs with I2C/etc requires a task context, and we don't
	64	* seem to have a reliable way to know if we're already in one; so
	65	* let's just assume the worst.
	66	*/
00852279	67	if (led_dat->can_sleep) {
306dd85c DB	68	led_dat->new_level = level;
306dd85c DB	69	schedule_work(&led_dat->work);
2146325d BH	70	} else {
	71	if (led_dat->blinking) {
	72	led_dat->platform_gpio_blink_set(led_dat->gpio, level,
	73	NULL, NULL);
	74	led_dat->blinking = 0;
	75	} else
	76	gpio_set_value(led_dat->gpio, level);
	77	}
22e03f3b RA	78	}
22e03f3b RA	79
ca3259b3 HVR	80	static int gpio_blink_set(struct led_classdev *led_cdev,
	81	unsigned long delay_on, unsigned long delay_off)
	82	{
	83	struct gpio_led_data *led_dat =
	84	container_of(led_cdev, struct gpio_led_data, cdev);
	85
2146325d BH	86	led_dat->blinking = 1;
	87	return led_dat->platform_gpio_blink_set(led_dat->gpio, GPIO_LED_BLINK,
	88	delay_on, delay_off);
ca3259b3 HVR	89	}
ca3259b3 HVR	90
a7d878af TP	91	static int __devinit create_gpio_led(const struct gpio_led *template,
a7d878af TP	92	struct gpio_led_data led_dat, struct device parent,
2146325d	93	int (blink_set)(unsigned, int, unsigned long , unsigned long *))
a7d878af	94	{
ed88bae6	95	int ret, state;
a7d878af	96
0b4634fc DES	97	led_dat->gpio = -1;
0b4634fc DES	98
d379ee8a DB	99	/* skip leds that aren't available */
d379ee8a DB	100	if (!gpio_is_valid(template->gpio)) {
2fea0922	101	printk(KERN_INFO "Skipping unavailable LED gpio %d (%s)\n",
d379ee8a	102	template->gpio, template->name);
ac15e950	103	return 0;
d379ee8a DB	104	}
d379ee8a DB	105
a7d878af TP	106	ret = gpio_request(template->gpio, template->name);
	107	if (ret < 0)
	108	return ret;
	109
	110	led_dat->cdev.name = template->name;
	111	led_dat->cdev.default_trigger = template->default_trigger;
	112	led_dat->gpio = template->gpio;
	113	led_dat->can_sleep = gpio_cansleep(template->gpio);
	114	led_dat->active_low = template->active_low;
2146325d	115	led_dat->blinking = 0;
a7d878af TP	116	if (blink_set) {
	117	led_dat->platform_gpio_blink_set = blink_set;
	118	led_dat->cdev.blink_set = gpio_blink_set;
	119	}
	120	led_dat->cdev.brightness_set = gpio_led_set;
ed88bae6 TP	121	if (template->default_state == LEDS_GPIO_DEFSTATE_KEEP)
	122	state = !!gpio_get_value(led_dat->gpio) ^ led_dat->active_low;
	123	else
	124	state = (template->default_state == LEDS_GPIO_DEFSTATE_ON);
	125	led_dat->cdev.brightness = state ? LED_FULL : LED_OFF;
defb512d RP	126	if (!template->retain_state_suspended)
defb512d RP	127	led_dat->cdev.flags \|= LED_CORE_SUSPENDRESUME;
a7d878af	128
ed88bae6	129	ret = gpio_direction_output(led_dat->gpio, led_dat->active_low ^ state);
a7d878af TP	130	if (ret < 0)
a7d878af TP	131	goto err;
2146325d	132
a7d878af TP	133	INIT_WORK(&led_dat->work, gpio_led_work);
	134
	135	ret = led_classdev_register(parent, &led_dat->cdev);
	136	if (ret < 0)
	137	goto err;
	138
	139	return 0;
	140	err:
	141	gpio_free(led_dat->gpio);
	142	return ret;
	143	}
	144
	145	static void delete_gpio_led(struct gpio_led_data *led)
	146	{
d379ee8a DB	147	if (!gpio_is_valid(led->gpio))
d379ee8a DB	148	return;
a7d878af TP	149	led_classdev_unregister(&led->cdev);
	150	cancel_work_sync(&led->work);
	151	gpio_free(led->gpio);
	152	}
	153
	154	#ifdef CONFIG_LEDS_GPIO_PLATFORM
7fd02170	155	static int __devinit gpio_led_probe(struct platform_device *pdev)
22e03f3b RA	156	{
22e03f3b RA	157	struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
a7d878af	158	struct gpio_led_data *leds_data;
22e03f3b RA	159	int i, ret = 0;
	160
	161	if (!pdata)
	162	return -EBUSY;
	163
	164	leds_data = kzalloc(sizeof(struct gpio_led_data) * pdata->num_leds,
	165	GFP_KERNEL);
	166	if (!leds_data)
	167	return -ENOMEM;
	168
	169	for (i = 0; i < pdata->num_leds; i++) {
a7d878af TP	170	ret = create_gpio_led(&pdata->leds[i], &leds_data[i],
a7d878af TP	171	&pdev->dev, pdata->gpio_blink_set);
d95cbe61 UKK	172	if (ret < 0)
d95cbe61 UKK	173	goto err;
22e03f3b RA	174	}
	175
	176	platform_set_drvdata(pdev, leds_data);
	177
	178	return 0;
	179
	180	err:
a7d878af TP	181	for (i = i - 1; i >= 0; i--)
a7d878af TP	182	delete_gpio_led(&leds_data[i]);
00852279	183
22e03f3b RA	184	kfree(leds_data);
	185
	186	return ret;
	187	}
	188
199fb21d	189	static int __devexit gpio_led_remove(struct platform_device *pdev)
22e03f3b RA	190	{
	191	int i;
	192	struct gpio_led_platform_data *pdata = pdev->dev.platform_data;
	193	struct gpio_led_data *leds_data;
	194
	195	leds_data = platform_get_drvdata(pdev);
	196
a7d878af TP	197	for (i = 0; i < pdata->num_leds; i++)
a7d878af TP	198	delete_gpio_led(&leds_data[i]);
199fb21d	199
22e03f3b RA	200	kfree(leds_data);
	201
	202	return 0;
	203	}
	204
22e03f3b	205	static struct platform_driver gpio_led_driver = {
199fb21d DB	206	.probe = gpio_led_probe,
199fb21d DB	207	.remove = __devexit_p(gpio_led_remove),
22e03f3b RA	208	.driver = {
	209	.name = "leds-gpio",
	210	.owner = THIS_MODULE,
	211	},
	212	};
	213
a7d878af TP	214	MODULE_ALIAS("platform:leds-gpio");
	215	#endif /* CONFIG_LEDS_GPIO_PLATFORM */
	216
	217	/* Code to create from OpenFirmware platform devices */
	218	#ifdef CONFIG_LEDS_GPIO_OF
	219	#include <linux/of_platform.h>
	220	#include <linux/of_gpio.h>
	221
	222	struct gpio_led_of_platform_data {
	223	int num_leds;
	224	struct gpio_led_data led_data[];
	225	};
	226
2dc11581	227	static int __devinit of_gpio_leds_probe(struct platform_device *ofdev,
a7d878af TP	228	const struct of_device_id *match)
a7d878af TP	229	{
61c7a080	230	struct device_node np = ofdev->dev.of_node, child;
a7d878af TP	231	struct gpio_led_of_platform_data *pdata;
	232	int count = 0, ret;
	233
	234	/* count LEDs defined by this device, so we know how much to allocate */
	235	for_each_child_of_node(np, child)
	236	count++;
	237	if (!count)
	238	return 0; /* or ENODEV? */
	239
	240	pdata = kzalloc(sizeof(pdata) + sizeof(struct gpio_led_data) count,
	241	GFP_KERNEL);
	242	if (!pdata)
	243	return -ENOMEM;
	244
a7d878af	245	for_each_child_of_node(np, child) {
0493a4ff	246	struct gpio_led led = {};
a7d878af	247	enum of_gpio_flags flags;
ed88bae6	248	const char *state;
a7d878af TP	249
	250	led.gpio = of_get_gpio_flags(child, 0, &flags);
	251	led.active_low = flags & OF_GPIO_ACTIVE_LOW;
	252	led.name = of_get_property(child, "label", NULL) ? : child->name;
	253	led.default_trigger =
	254	of_get_property(child, "linux,default-trigger", NULL);
ed88bae6 TP	255	state = of_get_property(child, "default-state", NULL);
	256	if (state) {
	257	if (!strcmp(state, "keep"))
	258	led.default_state = LEDS_GPIO_DEFSTATE_KEEP;
	259	else if(!strcmp(state, "on"))
	260	led.default_state = LEDS_GPIO_DEFSTATE_ON;
	261	else
	262	led.default_state = LEDS_GPIO_DEFSTATE_OFF;
	263	}
a7d878af TP	264
	265	ret = create_gpio_led(&led, &pdata->led_data[pdata->num_leds++],
	266	&ofdev->dev, NULL);
	267	if (ret < 0) {
	268	of_node_put(child);
	269	goto err;
	270	}
	271	}
	272
	273	dev_set_drvdata(&ofdev->dev, pdata);
	274
	275	return 0;
	276
	277	err:
	278	for (count = pdata->num_leds - 2; count >= 0; count--)
	279	delete_gpio_led(&pdata->led_data[count]);
	280
	281	kfree(pdata);
	282
	283	return ret;
	284	}
	285
2dc11581	286	static int __devexit of_gpio_leds_remove(struct platform_device *ofdev)
a7d878af TP	287	{
	288	struct gpio_led_of_platform_data *pdata = dev_get_drvdata(&ofdev->dev);
	289	int i;
	290
	291	for (i = 0; i < pdata->num_leds; i++)
	292	delete_gpio_led(&pdata->led_data[i]);
	293
	294	kfree(pdata);
	295
	296	dev_set_drvdata(&ofdev->dev, NULL);
	297
	298	return 0;
	299	}
	300
	301	static const struct of_device_id of_gpio_leds_match[] = {
	302	{ .compatible = "gpio-leds", },
	303	{},
	304	};
	305
	306	static struct of_platform_driver of_gpio_leds_driver = {
	307	.driver = {
	308	.name = "of_gpio_leds",
	309	.owner = THIS_MODULE,
4018294b	310	.of_match_table = of_gpio_leds_match,
a7d878af	311	},
a7d878af TP	312	.probe = of_gpio_leds_probe,
	313	.remove = __devexit_p(of_gpio_leds_remove),
	314	};
b2bdc3e7	315	#endif
a7d878af	316
b2bdc3e7	317	static int __init gpio_led_init(void)
a7d878af	318	{
25672b9d	319	int ret = 0;
b2bdc3e7 RP	320
	321	#ifdef CONFIG_LEDS_GPIO_PLATFORM
	322	ret = platform_driver_register(&gpio_led_driver);
	323	if (ret)
	324	return ret;
	325	#endif
	326	#ifdef CONFIG_LEDS_GPIO_OF
	327	ret = of_register_platform_driver(&of_gpio_leds_driver);
	328	#endif
	329	#ifdef CONFIG_LEDS_GPIO_PLATFORM
	330	if (ret)
	331	platform_driver_unregister(&gpio_led_driver);
	332	#endif
	333
	334	return ret;
a7d878af	335	}
a7d878af	336
b2bdc3e7	337	static void __exit gpio_led_exit(void)
a7d878af	338	{
b2bdc3e7 RP	339	#ifdef CONFIG_LEDS_GPIO_PLATFORM
	340	platform_driver_unregister(&gpio_led_driver);
	341	#endif
	342	#ifdef CONFIG_LEDS_GPIO_OF
a7d878af	343	of_unregister_platform_driver(&of_gpio_leds_driver);
a7d878af	344	#endif
b2bdc3e7 RP	345	}
	346
	347	module_init(gpio_led_init);
	348	module_exit(gpio_led_exit);
a7d878af TP	349
a7d878af TP	350	MODULE_AUTHOR("Raphael Assenat <raph@8d.com>, Trent Piepho <tpiepho@freescale.com>");
22e03f3b RA	351	MODULE_DESCRIPTION("GPIO LED driver");
22e03f3b RA	352	MODULE_LICENSE("GPL");