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authorMichael Hanselmann <linux-kernel@hansmi.ch>2006-06-25 08:47:08 -0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-25 13:00:59 -0400
commit5474c120aafe78ca54bf272f7a01107c42da2b21 (patch)
treec1b002a27703ce92c816bfb9844752186e33d403 /include/asm-powerpc
parent17660bdd5c1f1a165273c1a59cb5b87670a81cc4 (diff)
[PATCH] Rewritten backlight infrastructure for portable Apple computers
This patch contains a total rewrite of the backlight infrastructure for portable Apple computers. Backward compatibility is retained. A sysfs interface allows userland to control the brightness with more steps than before. Userland is allowed to upload a brightness curve for different monitors, similar to Mac OS X. [akpm@osdl.org: add needed exports] Signed-off-by: Michael Hanselmann <linux-kernel@hansmi.ch> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Richard Purdie <rpurdie@rpsys.net> Cc: "Antonino A. Daplas" <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/backlight.h30
1 files changed, 15 insertions, 15 deletions
diff --git a/include/asm-powerpc/backlight.h b/include/asm-powerpc/backlight.h
index 1ba1f27a0b63..a5e9e656e332 100644
--- a/include/asm-powerpc/backlight.h
+++ b/include/asm-powerpc/backlight.h
@@ -2,30 +2,30 @@
2 * Routines for handling backlight control on PowerBooks 2 * Routines for handling backlight control on PowerBooks
3 * 3 *
4 * For now, implementation resides in 4 * For now, implementation resides in
5 * arch/powerpc/platforms/powermac/pmac_support.c 5 * arch/powerpc/platforms/powermac/backlight.c
6 * 6 *
7 */ 7 */
8#ifndef __ASM_POWERPC_BACKLIGHT_H 8#ifndef __ASM_POWERPC_BACKLIGHT_H
9#define __ASM_POWERPC_BACKLIGHT_H 9#define __ASM_POWERPC_BACKLIGHT_H
10#ifdef __KERNEL__ 10#ifdef __KERNEL__
11 11
12/* Abstract values */ 12#include <linux/fb.h>
13#define BACKLIGHT_OFF 0 13#include <linux/mutex.h>
14#define BACKLIGHT_MIN 1
15#define BACKLIGHT_MAX 0xf
16 14
17struct backlight_controller { 15/* For locking instructions, see the implementation file */
18 int (*set_enable)(int enable, int level, void *data); 16extern struct backlight_device *pmac_backlight;
19 int (*set_level)(int level, void *data); 17extern struct mutex pmac_backlight_mutex;
20};
21 18
22extern void register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type); 19extern void pmac_backlight_calc_curve(struct fb_info*);
23extern void unregister_backlight_controller(struct backlight_controller *ctrler, void *data); 20extern int pmac_backlight_curve_lookup(struct fb_info *info, int value);
24 21
25extern int set_backlight_enable(int enable); 22extern int pmac_has_backlight_type(const char *type);
26extern int get_backlight_enable(void); 23
27extern int set_backlight_level(int level); 24extern void pmac_backlight_key_up(void);
28extern int get_backlight_level(void); 25extern void pmac_backlight_key_down(void);
26
27extern int pmac_backlight_set_legacy_brightness(int brightness);
28extern int pmac_backlight_get_legacy_brightness(void);
29 29
30#endif /* __KERNEL__ */ 30#endif /* __KERNEL__ */
31#endif 31#endif