| /* 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 |
