WebSVN – Kolibri OS – Diff – /drivers/include/linux/backlight.h


/*
 * Backlight Lowlevel Control Abstraction
 *
 * Copyright (C) 2003,2004 Hewlett-Packard Company
 *
 */
 
#ifndef _LINUX_BACKLIGHT_H
#define _LINUX_BACKLIGHT_H
 
#include 
#include 
#include 
#include 
 
/* Notes on locking:
 *
 * backlight_device->ops_lock is an internal backlight lock protecting the
 * ops pointer and no code outside the core should need to touch it.
 *
 * Access to update_status() is serialised by the update_lock mutex since
 * most drivers seem to need this and historically get it wrong.
 *
 * Most drivers don't need locking on their get_brightness() method.
 * If yours does, you need to implement it in the driver. You can use the
 * update_lock mutex if appropriate.
 *
 * Any other use of the locks below is probably wrong.
 */
 
enum backlight_update_reason {
	BACKLIGHT_UPDATE_HOTKEY,
	BACKLIGHT_UPDATE_SYSFS,
};
 
enum backlight_type {
	BACKLIGHT_RAW = 1,
	BACKLIGHT_PLATFORM,
	BACKLIGHT_FIRMWARE,
	BACKLIGHT_TYPE_MAX,
};
 
enum backlight_notification {
	BACKLIGHT_REGISTERED,
	BACKLIGHT_UNREGISTERED,
};
 
struct backlight_device;
struct fb_info;
#endif

Rev 6336	Rev 6936
1	/*	1	/*
2	* Backlight Lowlevel Control Abstraction	2	* Backlight Lowlevel Control Abstraction
3	*	3	*
4	* Copyright (C) 2003,2004 Hewlett-Packard Company	4	* Copyright (C) 2003,2004 Hewlett-Packard Company
5	*	5	*
6	*/	6	*/
7		7
8	#ifndef _LINUX_BACKLIGHT_H	8	#ifndef _LINUX_BACKLIGHT_H
9	#define _LINUX_BACKLIGHT_H	9	#define _LINUX_BACKLIGHT_H
10		10
11	#include	11	#include
12	#include	12	#include
13	#include	13	#include
-		14	#include
-		15
14	/* Notes on locking:	16	/* Notes on locking:
15	*	17	*
16	* backlight_device->ops_lock is an internal backlight lock protecting the	18	* backlight_device->ops_lock is an internal backlight lock protecting the
17	* ops pointer and no code outside the core should need to touch it.	19	* ops pointer and no code outside the core should need to touch it.
18	*	20	*
19	* Access to update_status() is serialised by the update_lock mutex since	21	* Access to update_status() is serialised by the update_lock mutex since
20	* most drivers seem to need this and historically get it wrong.	22	* most drivers seem to need this and historically get it wrong.
21	*	23	*
22	* Most drivers don't need locking on their get_brightness() method.	24	* Most drivers don't need locking on their get_brightness() method.
23	* If yours does, you need to implement it in the driver. You can use the	25	* If yours does, you need to implement it in the driver. You can use the
24	* update_lock mutex if appropriate.	26	* update_lock mutex if appropriate.
25	*	27	*
26	* Any other use of the locks below is probably wrong.	28	* Any other use of the locks below is probably wrong.
27	*/	29	*/
28		30
29	enum backlight_update_reason {	31	enum backlight_update_reason {
30	BACKLIGHT_UPDATE_HOTKEY,	32	BACKLIGHT_UPDATE_HOTKEY,
31	BACKLIGHT_UPDATE_SYSFS,	33	BACKLIGHT_UPDATE_SYSFS,
32	};	34	};
33		35
34	enum backlight_type {	36	enum backlight_type {
35	BACKLIGHT_RAW = 1,	37	BACKLIGHT_RAW = 1,
36	BACKLIGHT_PLATFORM,	38	BACKLIGHT_PLATFORM,
37	BACKLIGHT_FIRMWARE,	39	BACKLIGHT_FIRMWARE,
38	BACKLIGHT_TYPE_MAX,	40	BACKLIGHT_TYPE_MAX,
39	};	41	};
40		42
41	enum backlight_notification {	43	enum backlight_notification {
42	BACKLIGHT_REGISTERED,	44	BACKLIGHT_REGISTERED,
43	BACKLIGHT_UNREGISTERED,	45	BACKLIGHT_UNREGISTERED,
44	};	46	};
-		47
-		48	struct backlight_device;
45		49	struct fb_info;
46	#endif	50	#endif

Subversion Repositories Kolibri OS

(root)/drivers/include/linux/backlight.h – Rev 6336 → 6936