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/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