2 * Routines for handling backlight control on PowerBooks
4 * For now, implementation resides in
5 * arch/powerpc/platforms/powermac/backlight.c
8 #ifndef __ASM_POWERPC_BACKLIGHT_H
9 #define __ASM_POWERPC_BACKLIGHT_H
13 #include <linux/mutex.h>
15 /* For locking instructions, see the implementation file */
16 extern struct backlight_device *pmac_backlight;
17 extern struct mutex pmac_backlight_mutex;
19 extern int pmac_backlight_curve_lookup(struct fb_info *info, int value);
21 extern int pmac_has_backlight_type(const char *type);
23 extern void pmac_backlight_key(int direction);
24 static inline void pmac_backlight_key_up(void)
26 pmac_backlight_key(0);
28 static inline void pmac_backlight_key_down(void)
30 pmac_backlight_key(1);
33 extern int pmac_backlight_set_legacy_brightness(int brightness);
34 extern int pmac_backlight_get_legacy_brightness(void);
36 #endif /* __KERNEL__ */