1 /* 2 * Routines for handling backlight control on PowerBooks 3 * 4 * For now, implementation resides in 5 * arch/powerpc/platforms/powermac/backlight.c 6 * 7 */ 8 #ifndef __ASM_POWERPC_BACKLIGHT_H 9 #define __ASM_POWERPC_BACKLIGHT_H 10 #ifdef __KERNEL__ 11 12 #include <linux/fb.h> 13 #include <linux/mutex.h> 14 15 /* For locking instructions, see the implementation file */ 16 extern struct backlight_device *pmac_backlight; 17 extern struct mutex pmac_backlight_mutex; 18 19 extern int pmac_backlight_curve_lookup(struct fb_info *info, int value); 20 21 extern int pmac_has_backlight_type(const char *type); 22 23 extern void pmac_backlight_key(int direction); 24 static inline void pmac_backlight_key_up(void) 25 { 26 pmac_backlight_key(0); 27 } 28 static inline void pmac_backlight_key_down(void) 29 { 30 pmac_backlight_key(1); 31 } 32 33 extern void pmac_backlight_set_legacy_brightness_pmu(int brightness); 34 extern int pmac_backlight_set_legacy_brightness(int brightness); 35 extern int pmac_backlight_get_legacy_brightness(void); 36 37 extern void pmac_backlight_enable(void); 38 extern void pmac_backlight_disable(void); 39 40 #endif /* __KERNEL__ */ 41 #endif 42