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