1/* SPDX-License-Identifier: GPL-2.0 */ 2/* 3 * Routines for handling backlight control on PowerBooks 4 * 5 * For now, implementation resides in 6 * arch/powerpc/platforms/powermac/backlight.c 7 * 8 */ 9#ifndef __ASM_POWERPC_BACKLIGHT_H 10#define __ASM_POWERPC_BACKLIGHT_H 11#ifdef __KERNEL__ 12 13#include <linux/mutex.h> 14 15struct backlight_device; 16 17/* For locking instructions, see the implementation file */ 18extern struct backlight_device *pmac_backlight; 19extern struct mutex pmac_backlight_mutex; 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