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/* SPDX-License-Identifier: GPL-2.0 */ /* * Routines for handling backlight control on PowerBooks * * For now, implementation resides in * arch/powerpc/platforms/powermac/backlight.c * */ #ifndef __ASM_POWERPC_BACKLIGHT_H #define __ASM_POWERPC_BACKLIGHT_H #ifdef __KERNEL__ #include <linux/fb.h> #include <linux/mutex.h> /* For locking instructions, see the implementation file */ extern struct backlight_device *pmac_backlight; extern struct mutex pmac_backlight_mutex; extern int pmac_backlight_curve_lookup(struct fb_info *info, int value); extern int pmac_has_backlight_type(const char *type); extern void pmac_backlight_key(int direction); static inline void pmac_backlight_key_up(void) { pmac_backlight_key(0); } static inline void pmac_backlight_key_down(void) { pmac_backlight_key(1); } extern void pmac_backlight_set_legacy_brightness_pmu(int brightness); extern int pmac_backlight_set_legacy_brightness(int brightness); extern int pmac_backlight_get_legacy_brightness(void); extern void pmac_backlight_enable(void); extern void pmac_backlight_disable(void); #endif /* __KERNEL__ */ #endif |