/* * Routines for handling backlight control on PowerBooks * * For now, implementation resides in arch/ppc/kernel/pmac_support.c * */#ifdef __KERNEL__#ifndef __ASM_PPC_BACKLIGHT_H#define __ASM_PPC_BACKLIGHT_H /* Abstract values */#define BACKLIGHT_OFF	0#define BACKLIGHT_MIN	1#define BACKLIGHT_MAX	0xf struct backlight_controller {	int (*set_enable)(int enable, int level, void *data);	int (*set_level)(int level, void *data);}; extern void register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type);extern void unregister_backlight_controller(struct backlight_controller *ctrler, void *data); extern int set_backlight_enable(int enable);extern int get_backlight_enable(void);extern int set_backlight_level(int level);extern int get_backlight_level(void); #endif#endif /* __KERNEL__ */