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Linux Cross Reference
Linux/include/asm-ppc/backlight.h

Version: ~ [ 2.4.0 ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~ 
  1 /*
  2  * Routines for handling backlight control on PowerBooks
  3  * 
  4  * For now, implementation resides in arch/ppc/kernel/pmac_support.c
  5  * 
  6  */
  7 #ifdef __KERNEL__
  8 #ifndef __ASM_PPC_BACKLIGHT_H
  9 #define __ASM_PPC_BACKLIGHT_H
 10 
 11 /* Abstract values */
 12 #define BACKLIGHT_OFF   0
 13 #define BACKLIGHT_MIN   1
 14 #define BACKLIGHT_MAX   0xf
 15 
 16 struct backlight_controller {
 17         int (*set_enable)(int enable, int level, void *data);
 18         int (*set_level)(int level, void *data);
 19 };
 20 
 21 extern void register_backlight_controller(struct backlight_controller *ctrler, void *data, char *type);
 22 extern void unregister_backlight_controller(struct backlight_controller *ctrler, void *data);
 23 
 24 extern int set_backlight_enable(int enable);
 25 extern int get_backlight_enable(void);
 26 extern int set_backlight_level(int level);
 27 extern int get_backlight_level(void);
 28 
 29 #endif
 30 #endif /* __KERNEL__ */
 31
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