LXR linux/arch/powerpc/include/asm/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 */
  16extern struct backlight_device *pmac_backlight;
  17extern struct mutex pmac_backlight_mutex;
  18
  19extern int pmac_backlight_curve_lookup(struct fb_info *info, int value);
  20
  21extern int pmac_has_backlight_type(const char *type);
  22
  23extern void pmac_backlight_key(int direction);
  24static inline void pmac_backlight_key_up(void)
  25{
  26        pmac_backlight_key(0);
  27}
  28static inline void pmac_backlight_key_down(void)
  29{
  30        pmac_backlight_key(1);
  31}
  32
  33extern void pmac_backlight_set_legacy_brightness_pmu(int brightness);
  34extern int pmac_backlight_set_legacy_brightness(int brightness);
  35extern int pmac_backlight_get_legacy_brightness(void);
  36
  37extern void pmac_backlight_enable(void);
  38extern void pmac_backlight_disable(void);
  39
  40#endif /* __KERNEL__ */
  41#endif
  42