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 void pmac_backlight_calc_curve(struct fb_info*);
  20 extern int pmac_backlight_curve_lookup(struct fb_info *info, int value);
  21
  22 extern int pmac_has_backlight_type(const char *type);
  23
  24 extern void pmac_backlight_key_up(void);
  25 extern void pmac_backlight_key_down(void);
  26
  27 extern int pmac_backlight_set_legacy_brightness(int brightness);
  28 extern int pmac_backlight_get_legacy_brightness(void);
  29
  30 #endif /* __KERNEL__ */
  31 #endif