include/asm-powerpc/backlight.h

   1 /*
   2  * Routines for handling backlight control on PowerBooks
   3  *
   4  * For now, implementation resides in
   5  * arch/powerpc/platforms/powermac/pmac_support.c
   6  *
   7  */
   8 #ifndef __ASM_POWERPC_BACKLIGHT_H
   9 #define __ASM_POWERPC_BACKLIGHT_H
  10 #ifdef __KERNEL__
  11
  12 /* Abstract values */
  13 #define BACKLIGHT_OFF   0
  14 #define BACKLIGHT_MIN   1
  15 #define BACKLIGHT_MAX   0xf
  16
  17 struct backlight_controller {
  18         int (*set_enable)(int enable, int level, void *data);
  19         int (*set_level)(int level, void *data);
  20 };
  21
  22 extern void register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type);
  23 extern void unregister_backlight_controller(struct backlight_controller *ctrler, void *data);
  24
  25 extern int set_backlight_enable(int enable);
  26 extern int get_backlight_enable(void);
  27 extern int set_backlight_level(int level);
  28 extern int get_backlight_level(void);
  29
  30 #endif /* __KERNEL__ */
  31 #endif