[mirror_ubuntu-zesty-kernel.git] / include / linux / leds.h

/*
 * Driver model for leds and led triggers
 *
 * Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
 * Copyright (C) 2005 Richard Purdie <rpurdie@openedhand.com>
 *
 * 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.
 *
 */
#ifndef __LINUX_LEDS_H_INCLUDED
#define __LINUX_LEDS_H_INCLUDED

#include <linux/list.h>
#include <linux/mutex.h>
#include <linux/rwsem.h>
#include <linux/spinlock.h>
#include <linux/timer.h>
#include <linux/workqueue.h>

struct device;
/*
 * LED Core
 */

enum led_brightness {
	LED_OFF		= 0,
	LED_HALF	= 127,
	LED_FULL	= 255,
};

struct led_classdev {
	const char		*name;
	enum led_brightness	 brightness;
	enum led_brightness	 max_brightness;
	int			 flags;

	/* Lower 16 bits reflect status */
#define LED_SUSPENDED		(1 << 0)
	/* Upper 16 bits reflect control information */
#define LED_CORE_SUSPENDRESUME	(1 << 16)
#define LED_BLINK_ONESHOT	(1 << 17)
#define LED_BLINK_ONESHOT_STOP	(1 << 18)
#define LED_BLINK_INVERT	(1 << 19)
#define LED_SYSFS_DISABLE	(1 << 20)

	/* Set LED brightness level */
	/* Must not sleep, use a workqueue if needed */
	void		(*brightness_set)(struct led_classdev *led_cdev,
					  enum led_brightness brightness);
	/* Get LED brightness level */
	enum led_brightness (*brightness_get)(struct led_classdev *led_cdev);

	/*
	 * Activate hardware accelerated blink, delays are in milliseconds
	 * and if both are zero then a sensible default should be chosen.
	 * The call should adjust the timings in that case and if it can't
	 * match the values specified exactly.
	 * Deactivate blinking again when the brightness is set to a fixed
	 * value via the brightness_set() callback.
	 */
	int		(*blink_set)(struct led_classdev *led_cdev,
				     unsigned long *delay_on,
				     unsigned long *delay_off);

	struct device		*dev;
	const struct attribute_group	**groups;

	struct list_head	 node;			/* LED Device list */
	const char		*default_trigger;	/* Trigger to use */

	unsigned long		 blink_delay_on, blink_delay_off;
	struct timer_list	 blink_timer;
	int			 blink_brightness;

	struct work_struct	set_brightness_work;
	int			delayed_set_value;

#ifdef CONFIG_LEDS_TRIGGERS
	/* Protects the trigger data below */
	struct rw_semaphore	 trigger_lock;

	struct led_trigger	*trigger;
	struct list_head	 trig_list;
	void			*trigger_data;
	/* true if activated - deactivate routine uses it to do cleanup */
	bool			activated;
#endif

	/* Ensures consistent access to the LED Flash Class device */
	struct mutex		led_access;
};

extern int led_classdev_register(struct device *parent,
				 struct led_classdev *led_cdev);
extern void led_classdev_unregister(struct led_classdev *led_cdev);
extern void led_classdev_suspend(struct led_classdev *led_cdev);
extern void led_classdev_resume(struct led_classdev *led_cdev);

/**
 * led_blink_set - set blinking with software fallback
 * @led_cdev: the LED to start blinking
 * @delay_on: the time it should be on (in ms)
 * @delay_off: the time it should ble off (in ms)
 *
 * This function makes the LED blink, attempting to use the
 * hardware acceleration if possible, but falling back to
 * software blinking if there is no hardware blinking or if
 * the LED refuses the passed values.
 *
 * Note that if software blinking is active, simply calling
 * led_cdev->brightness_set() will not stop the blinking,
 * use led_classdev_brightness_set() instead.
 */
extern void led_blink_set(struct led_classdev *led_cdev,
			  unsigned long *delay_on,
			  unsigned long *delay_off);
/**
 * led_blink_set_oneshot - do a oneshot software blink
 * @led_cdev: the LED to start blinking
 * @delay_on: the time it should be on (in ms)
 * @delay_off: the time it should ble off (in ms)
 * @invert: blink off, then on, leaving the led on
 *
 * This function makes the LED blink one time for delay_on +
 * delay_off time, ignoring the request if another one-shot
 * blink is already in progress.
 *
 * If invert is set, led blinks for delay_off first, then for
 * delay_on and leave the led on after the on-off cycle.
 */
extern void led_blink_set_oneshot(struct led_classdev *led_cdev,
				  unsigned long *delay_on,
				  unsigned long *delay_off,
				  int invert);
/**
 * led_set_brightness - set LED brightness
 * @led_cdev: the LED to set
 * @brightness: the brightness to set it to
 *
 * Set an LED's brightness, and, if necessary, cancel the
 * software blink timer that implements blinking when the
 * hardware doesn't.
 */
extern void led_set_brightness(struct led_classdev *led_cdev,
			       enum led_brightness brightness);
/**
 * led_update_brightness - update LED brightness
 * @led_cdev: the LED to query
 *
 * Get an LED's current brightness and update led_cdev->brightness
 * member with the obtained value.
 *
 * Returns: 0 on success or negative error value on failure
 */
extern int led_update_brightness(struct led_classdev *led_cdev);

/**
 * led_sysfs_disable - disable LED sysfs interface
 * @led_cdev: the LED to set
 *
 * Disable the led_cdev's sysfs interface.
 */
extern void led_sysfs_disable(struct led_classdev *led_cdev);

/**
 * led_sysfs_enable - enable LED sysfs interface
 * @led_cdev: the LED to set
 *
 * Enable the led_cdev's sysfs interface.
 */
extern void led_sysfs_enable(struct led_classdev *led_cdev);

/**
 * led_sysfs_is_disabled - check if LED sysfs interface is disabled
 * @led_cdev: the LED to query
 *
 * Returns: true if the led_cdev's sysfs interface is disabled.
 */
static inline bool led_sysfs_is_disabled(struct led_classdev *led_cdev)
{
	return led_cdev->flags & LED_SYSFS_DISABLE;
}

/*
 * LED Triggers
 */
/* Registration functions for simple triggers */
#define DEFINE_LED_TRIGGER(x)		static struct led_trigger *x;
#define DEFINE_LED_TRIGGER_GLOBAL(x)	struct led_trigger *x;

#ifdef CONFIG_LEDS_TRIGGERS

#define TRIG_NAME_MAX 50

struct led_trigger {
	/* Trigger Properties */
	const char	 *name;
	void		(*activate)(struct led_classdev *led_cdev);
	void		(*deactivate)(struct led_classdev *led_cdev);

	/* LEDs under control by this trigger (for simple triggers) */
	rwlock_t	  leddev_list_lock;
	struct list_head  led_cdevs;

	/* Link to next registered trigger */
	struct list_head  next_trig;
};

/* Registration functions for complex triggers */
extern int led_trigger_register(struct led_trigger *trigger);
extern void led_trigger_unregister(struct led_trigger *trigger);

extern void led_trigger_register_simple(const char *name,
				struct led_trigger **trigger);
extern void led_trigger_unregister_simple(struct led_trigger *trigger);
extern void led_trigger_event(struct led_trigger *trigger,
				enum led_brightness event);
extern void led_trigger_blink(struct led_trigger *trigger,
			      unsigned long *delay_on,
			      unsigned long *delay_off);
extern void led_trigger_blink_oneshot(struct led_trigger *trigger,
				      unsigned long *delay_on,
				      unsigned long *delay_off,
				      int invert);
/**
 * led_trigger_rename_static - rename a trigger
 * @name: the new trigger name
 * @trig: the LED trigger to rename
 *
 * Change a LED trigger name by copying the string passed in
 * name into current trigger name, which MUST be large
 * enough for the new string.
 *
 * Note that name must NOT point to the same string used
 * during LED registration, as that could lead to races.
 *
 * This is meant to be used on triggers with statically
 * allocated name.
 */
extern void led_trigger_rename_static(const char *name,
				      struct led_trigger *trig);

#else

/* Trigger has no members */
struct led_trigger {};

/* Trigger inline empty functions */
static inline void led_trigger_register_simple(const char *name,
					struct led_trigger **trigger) {}
static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
static inline void led_trigger_event(struct led_trigger *trigger,
				enum led_brightness event) {}
#endif /* CONFIG_LEDS_TRIGGERS */

/* Trigger specific functions */
#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK
extern void ledtrig_ide_activity(void);
#else
static inline void ledtrig_ide_activity(void) {}
#endif

#if defined(CONFIG_LEDS_TRIGGER_CAMERA) || defined(CONFIG_LEDS_TRIGGER_CAMERA_MODULE)
extern void ledtrig_flash_ctrl(bool on);
extern void ledtrig_torch_ctrl(bool on);
#else
static inline void ledtrig_flash_ctrl(bool on) {}
static inline void ledtrig_torch_ctrl(bool on) {}
#endif

/*
 * Generic LED platform data for describing LED names and default triggers.
 */
struct led_info {
	const char	*name;
	const char	*default_trigger;
	int		flags;
};

struct led_platform_data {
	int		num_leds;
	struct led_info	*leds;
};

/* For the leds-gpio driver */
struct gpio_led {
	const char *name;
	const char *default_trigger;
	unsigned 	gpio;
	unsigned	active_low : 1;
	unsigned	retain_state_suspended : 1;
	unsigned	default_state : 2;
	/* default_state should be one of LEDS_GPIO_DEFSTATE_(ON|OFF|KEEP) */
};
#define LEDS_GPIO_DEFSTATE_OFF		0
#define LEDS_GPIO_DEFSTATE_ON		1
#define LEDS_GPIO_DEFSTATE_KEEP		2

struct gpio_led_platform_data {
	int 		num_leds;
	const struct gpio_led *leds;

#define GPIO_LED_NO_BLINK_LOW	0	/* No blink GPIO state low */
#define GPIO_LED_NO_BLINK_HIGH	1	/* No blink GPIO state high */
#define GPIO_LED_BLINK		2	/* Please, blink */
	int		(*gpio_blink_set)(unsigned gpio, int state,
					unsigned long *delay_on,
					unsigned long *delay_off);
};

struct platform_device *gpio_led_register_device(
		int id, const struct gpio_led_platform_data *pdata);

enum cpu_led_event {
	CPU_LED_IDLE_START,	/* CPU enters idle */
	CPU_LED_IDLE_END,	/* CPU idle ends */
	CPU_LED_START,		/* Machine starts, especially resume */
	CPU_LED_STOP,		/* Machine stops, especially suspend */
	CPU_LED_HALTED,		/* Machine shutdown */
};
#ifdef CONFIG_LEDS_TRIGGER_CPU
extern void ledtrig_cpu(enum cpu_led_event evt);
#else
static inline void ledtrig_cpu(enum cpu_led_event evt)
{
	return;
}
#endif

#endif		/* __LINUX_LEDS_H_INCLUDED */
Commit	Line	Data
c72a1d60 RP	1	/*
	2	* Driver model for leds and led triggers
	3	*
	4	* Copyright (C) 2005 John Lenz <lenz@cs.wisc.edu>
	5	* Copyright (C) 2005 Richard Purdie <rpurdie@openedhand.com>
	6	*
	7	* This program is free software; you can redistribute it and/or modify
	8	* it under the terms of the GNU General Public License version 2 as
	9	* published by the Free Software Foundation.
	10	*
	11	*/
	12	#ifndef __LINUX_LEDS_H_INCLUDED
	13	#define __LINUX_LEDS_H_INCLUDED
	14
af410fc1	15	#include <linux/list.h>
acd899e4	16	#include <linux/mutex.h>
dc47206e	17	#include <linux/rwsem.h>
04713306	18	#include <linux/spinlock.h>
9067359f	19	#include <linux/timer.h>
d23a22a7	20	#include <linux/workqueue.h>
af410fc1	21
c72a1d60	22	struct device;
c72a1d60 RP	23	/*
	24	* LED Core
	25	*/
	26
	27	enum led_brightness {
fb5035db BD	28	LED_OFF = 0,
	29	LED_HALF = 127,
	30	LED_FULL = 255,
c72a1d60 RP	31	};
	32
	33	struct led_classdev {
fb5035db	34	const char *name;
d8082827 JA	35	enum led_brightness brightness;
d8082827 JA	36	enum led_brightness max_brightness;
fb5035db	37	int flags;
c72a1d60	38
859cb7f2	39	/* Lower 16 bits reflect status */
fb5035db	40	#define LED_SUSPENDED (1 << 0)
859cb7f2 RP	41	/* Upper 16 bits reflect control information */
859cb7f2 RP	42	#define LED_CORE_SUSPENDRESUME (1 << 16)
5bb629c5 FB	43	#define LED_BLINK_ONESHOT (1 << 17)
	44	#define LED_BLINK_ONESHOT_STOP (1 << 18)
	45	#define LED_BLINK_INVERT (1 << 19)
acd899e4	46	#define LED_SYSFS_DISABLE (1 << 20)
c72a1d60	47
fb5035db	48	/* Set LED brightness level */
2e214e0f	49	/* Must not sleep, use a workqueue if needed */
fb5035db BD	50	void (brightness_set)(struct led_classdev led_cdev,
fb5035db BD	51	enum led_brightness brightness);
29d76dfa HMH	52	/* Get LED brightness level */
29d76dfa HMH	53	enum led_brightness (brightness_get)(struct led_classdev led_cdev);
fb5035db	54
5ada28bf JB	55	/*
	56	* Activate hardware accelerated blink, delays are in milliseconds
	57	* and if both are zero then a sensible default should be chosen.
	58	* The call should adjust the timings in that case and if it can't
	59	* match the values specified exactly.
	60	* Deactivate blinking again when the brightness is set to a fixed
	61	* value via the brightness_set() callback.
	62	*/
4c79141d MN	63	int (blink_set)(struct led_classdev led_cdev,
	64	unsigned long *delay_on,
	65	unsigned long *delay_off);
	66
f8a7c6fe	67	struct device *dev;
d0d480cc JH	68	const struct attribute_group **groups;
d0d480cc JH	69
fb5035db	70	struct list_head node; /* LED Device list */
781a54e7	71	const char default_trigger; / Trigger to use */
c72a1d60	72
5ada28bf	73	unsigned long blink_delay_on, blink_delay_off;
9067359f	74	struct timer_list blink_timer;
5ada28bf JB	75	int blink_brightness;
5ada28bf JB	76
d23a22a7 FB	77	struct work_struct set_brightness_work;
	78	int delayed_set_value;
	79
c3bc9956	80	#ifdef CONFIG_LEDS_TRIGGERS
c3bc9956	81	/* Protects the trigger data below */
dc47206e	82	struct rw_semaphore trigger_lock;
c3bc9956	83
fb5035db BD	84	struct led_trigger *trigger;
	85	struct list_head trig_list;
	86	void *trigger_data;
b0096182 SK	87	/* true if activated - deactivate routine uses it to do cleanup */
b0096182 SK	88	bool activated;
c3bc9956	89	#endif
acd899e4 JA	90
	91	/* Ensures consistent access to the LED Flash Class device */
	92	struct mutex led_access;
c72a1d60 RP	93	};
	94
	95	extern int led_classdev_register(struct device *parent,
fb5035db	96	struct led_classdev *led_cdev);
e2387d6c	97	extern void led_classdev_unregister(struct led_classdev *led_cdev);
c72a1d60 RP	98	extern void led_classdev_suspend(struct led_classdev *led_cdev);
	99	extern void led_classdev_resume(struct led_classdev *led_cdev);
	100
5ada28bf JB	101	/**
	102	* led_blink_set - set blinking with software fallback
	103	* @led_cdev: the LED to start blinking
	104	* @delay_on: the time it should be on (in ms)
	105	* @delay_off: the time it should ble off (in ms)
	106	*
	107	* This function makes the LED blink, attempting to use the
	108	* hardware acceleration if possible, but falling back to
	109	* software blinking if there is no hardware blinking or if
	110	* the LED refuses the passed values.
	111	*
	112	* Note that if software blinking is active, simply calling
	113	* led_cdev->brightness_set() will not stop the blinking,
	114	* use led_classdev_brightness_set() instead.
	115	*/
	116	extern void led_blink_set(struct led_classdev *led_cdev,
	117	unsigned long *delay_on,
	118	unsigned long *delay_off);
5bb629c5 FB	119	/**
	120	* led_blink_set_oneshot - do a oneshot software blink
	121	* @led_cdev: the LED to start blinking
	122	* @delay_on: the time it should be on (in ms)
	123	* @delay_off: the time it should ble off (in ms)
	124	* @invert: blink off, then on, leaving the led on
	125	*
	126	* This function makes the LED blink one time for delay_on +
	127	* delay_off time, ignoring the request if another one-shot
	128	* blink is already in progress.
	129	*
	130	* If invert is set, led blinks for delay_off first, then for
	131	* delay_on and leave the led on after the on-off cycle.
	132	*/
	133	extern void led_blink_set_oneshot(struct led_classdev *led_cdev,
	134	unsigned long *delay_on,
	135	unsigned long *delay_off,
	136	int invert);
5ada28bf	137	/**
19cd67e2	138	* led_set_brightness - set LED brightness
5ada28bf JB	139	* @led_cdev: the LED to set
	140	* @brightness: the brightness to set it to
	141	*
	142	* Set an LED's brightness, and, if necessary, cancel the
	143	* software blink timer that implements blinking when the
	144	* hardware doesn't.
	145	*/
19cd67e2	146	extern void led_set_brightness(struct led_classdev *led_cdev,
5ada28bf	147	enum led_brightness brightness);
3ef7de53 JA	148	/**
	149	* led_update_brightness - update LED brightness
	150	* @led_cdev: the LED to query
	151	*
	152	* Get an LED's current brightness and update led_cdev->brightness
	153	* member with the obtained value.
	154	*
	155	* Returns: 0 on success or negative error value on failure
	156	*/
	157	extern int led_update_brightness(struct led_classdev *led_cdev);
5ada28bf	158
acd899e4 JA	159	/**
	160	* led_sysfs_disable - disable LED sysfs interface
	161	* @led_cdev: the LED to set
	162	*
	163	* Disable the led_cdev's sysfs interface.
	164	*/
	165	extern void led_sysfs_disable(struct led_classdev *led_cdev);
	166
	167	/**
	168	* led_sysfs_enable - enable LED sysfs interface
	169	* @led_cdev: the LED to set
	170	*
	171	* Enable the led_cdev's sysfs interface.
	172	*/
	173	extern void led_sysfs_enable(struct led_classdev *led_cdev);
	174
	175	/**
	176	* led_sysfs_is_disabled - check if LED sysfs interface is disabled
	177	* @led_cdev: the LED to query
	178	*
	179	* Returns: true if the led_cdev's sysfs interface is disabled.
	180	*/
	181	static inline bool led_sysfs_is_disabled(struct led_classdev *led_cdev)
	182	{
	183	return led_cdev->flags & LED_SYSFS_DISABLE;
	184	}
	185
c3bc9956 RP	186	/*
	187	* LED Triggers
	188	*/
39f7e08a KM	189	/* Registration functions for simple triggers */
	190	#define DEFINE_LED_TRIGGER(x) static struct led_trigger *x;
	191	#define DEFINE_LED_TRIGGER_GLOBAL(x) struct led_trigger *x;
	192
c3bc9956 RP	193	#ifdef CONFIG_LEDS_TRIGGERS
	194
	195	#define TRIG_NAME_MAX 50
	196
	197	struct led_trigger {
	198	/* Trigger Properties */
fb5035db BD	199	const char *name;
	200	void (activate)(struct led_classdev led_cdev);
	201	void (deactivate)(struct led_classdev led_cdev);
c3bc9956 RP	202
c3bc9956 RP	203	/* LEDs under control by this trigger (for simple triggers) */
fb5035db BD	204	rwlock_t leddev_list_lock;
fb5035db BD	205	struct list_head led_cdevs;
c3bc9956 RP	206
c3bc9956 RP	207	/* Link to next registered trigger */
fb5035db	208	struct list_head next_trig;
c3bc9956 RP	209	};
	210
	211	/* Registration functions for complex triggers */
	212	extern int led_trigger_register(struct led_trigger *trigger);
	213	extern void led_trigger_unregister(struct led_trigger *trigger);
	214
c3bc9956 RP	215	extern void led_trigger_register_simple(const char *name,
	216	struct led_trigger **trigger);
	217	extern void led_trigger_unregister_simple(struct led_trigger *trigger);
	218	extern void led_trigger_event(struct led_trigger *trigger,
	219	enum led_brightness event);
0b9536c9 VK	220	extern void led_trigger_blink(struct led_trigger *trigger,
	221	unsigned long *delay_on,
	222	unsigned long *delay_off);
5bb629c5 FB	223	extern void led_trigger_blink_oneshot(struct led_trigger *trigger,
	224	unsigned long *delay_on,
	225	unsigned long *delay_off,
	226	int invert);
057407c7 JH	227	/**
	228	* led_trigger_rename_static - rename a trigger
	229	* @name: the new trigger name
	230	* @trig: the LED trigger to rename
	231	*
	232	* Change a LED trigger name by copying the string passed in
	233	* name into current trigger name, which MUST be large
	234	* enough for the new string.
	235	*
	236	* Note that name must NOT point to the same string used
	237	* during LED registration, as that could lead to races.
	238	*
	239	* This is meant to be used on triggers with statically
	240	* allocated name.
	241	*/
	242	extern void led_trigger_rename_static(const char *name,
	243	struct led_trigger *trig);
c3bc9956 RP	244
	245	#else
	246
39f7e08a KM	247	/* Trigger has no members */
39f7e08a KM	248	struct led_trigger {};
c3bc9956	249
39f7e08a KM	250	/* Trigger inline empty functions */
	251	static inline void led_trigger_register_simple(const char *name,
	252	struct led_trigger **trigger) {}
	253	static inline void led_trigger_unregister_simple(struct led_trigger *trigger) {}
	254	static inline void led_trigger_event(struct led_trigger *trigger,
	255	enum led_brightness event) {}
	256	#endif /* CONFIG_LEDS_TRIGGERS */
2bfb646c RP	257
	258	/* Trigger specific functions */
	259	#ifdef CONFIG_LEDS_TRIGGER_IDE_DISK
	260	extern void ledtrig_ide_activity(void);
	261	#else
39f7e08a	262	static inline void ledtrig_ide_activity(void) {}
2bfb646c RP	263	#endif
2bfb646c RP	264
48a1d032 KM	265	#if defined(CONFIG_LEDS_TRIGGER_CAMERA) \|\| defined(CONFIG_LEDS_TRIGGER_CAMERA_MODULE)
	266	extern void ledtrig_flash_ctrl(bool on);
	267	extern void ledtrig_torch_ctrl(bool on);
	268	#else
	269	static inline void ledtrig_flash_ctrl(bool on) {}
	270	static inline void ledtrig_torch_ctrl(bool on) {}
	271	#endif
	272
f46e9203 NC	273	/*
	274	* Generic LED platform data for describing LED names and default triggers.
	275	*/
	276	struct led_info {
	277	const char *name;
326bb8a5	278	const char *default_trigger;
f46e9203 NC	279	int flags;
	280	};
	281
	282	struct led_platform_data {
	283	int num_leds;
	284	struct led_info *leds;
	285	};
	286
22e03f3b RA	287	/* For the leds-gpio driver */
	288	struct gpio_led {
	289	const char *name;
326bb8a5	290	const char *default_trigger;
22e03f3b	291	unsigned gpio;
ed88bae6 TP	292	unsigned active_low : 1;
	293	unsigned retain_state_suspended : 1;
	294	unsigned default_state : 2;
	295	/* default_state should be one of LEDS_GPIO_DEFSTATE_(ON\|OFF\|KEEP) */
22e03f3b	296	};
2146325d BH	297	#define LEDS_GPIO_DEFSTATE_OFF 0
	298	#define LEDS_GPIO_DEFSTATE_ON 1
	299	#define LEDS_GPIO_DEFSTATE_KEEP 2
22e03f3b RA	300
	301	struct gpio_led_platform_data {
	302	int num_leds;
9517f925	303	const struct gpio_led *leds;
2146325d BH	304
	305	#define GPIO_LED_NO_BLINK_LOW 0 /* No blink GPIO state low */
	306	#define GPIO_LED_NO_BLINK_HIGH 1 /* No blink GPIO state high */
9517f925	307	#define GPIO_LED_BLINK 2 /* Please, blink */
2146325d	308	int (*gpio_blink_set)(unsigned gpio, int state,
ca3259b3 HVR	309	unsigned long *delay_on,
ca3259b3 HVR	310	unsigned long *delay_off);
22e03f3b RA	311	};
22e03f3b RA	312
4440673a UKK	313	struct platform_device *gpio_led_register_device(
4440673a UKK	314	int id, const struct gpio_led_platform_data *pdata);
22e03f3b	315
8f88731d BW	316	enum cpu_led_event {
	317	CPU_LED_IDLE_START, /* CPU enters idle */
	318	CPU_LED_IDLE_END, /* CPU idle ends */
	319	CPU_LED_START, /* Machine starts, especially resume */
	320	CPU_LED_STOP, /* Machine stops, especially suspend */
	321	CPU_LED_HALTED, /* Machine shutdown */
	322	};
	323	#ifdef CONFIG_LEDS_TRIGGER_CPU
	324	extern void ledtrig_cpu(enum cpu_led_event evt);
	325	#else
	326	static inline void ledtrig_cpu(enum cpu_led_event evt)
	327	{
	328	return;
	329	}
	330	#endif
	331
c72a1d60	332	#endif /* __LINUX_LEDS_H_INCLUDED */