1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * Routines for handling backlight control on PowerBooks 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * For now, implementation resides in 6*4882a593Smuzhiyun * arch/powerpc/platforms/powermac/backlight.c 7*4882a593Smuzhiyun * 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun #ifndef __ASM_POWERPC_BACKLIGHT_H 10*4882a593Smuzhiyun #define __ASM_POWERPC_BACKLIGHT_H 11*4882a593Smuzhiyun #ifdef __KERNEL__ 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/fb.h> 14*4882a593Smuzhiyun #include <linux/mutex.h> 15*4882a593Smuzhiyun 16*4882a593Smuzhiyun /* For locking instructions, see the implementation file */ 17*4882a593Smuzhiyun extern struct backlight_device *pmac_backlight; 18*4882a593Smuzhiyun extern struct mutex pmac_backlight_mutex; 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun extern int pmac_backlight_curve_lookup(struct fb_info *info, int value); 21*4882a593Smuzhiyun 22*4882a593Smuzhiyun extern int pmac_has_backlight_type(const char *type); 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun extern void pmac_backlight_key(int direction); pmac_backlight_key_up(void)25*4882a593Smuzhiyunstatic inline void pmac_backlight_key_up(void) 26*4882a593Smuzhiyun { 27*4882a593Smuzhiyun pmac_backlight_key(0); 28*4882a593Smuzhiyun } pmac_backlight_key_down(void)29*4882a593Smuzhiyunstatic inline void pmac_backlight_key_down(void) 30*4882a593Smuzhiyun { 31*4882a593Smuzhiyun pmac_backlight_key(1); 32*4882a593Smuzhiyun } 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun extern void pmac_backlight_set_legacy_brightness_pmu(int brightness); 35*4882a593Smuzhiyun extern int pmac_backlight_set_legacy_brightness(int brightness); 36*4882a593Smuzhiyun extern int pmac_backlight_get_legacy_brightness(void); 37*4882a593Smuzhiyun 38*4882a593Smuzhiyun extern void pmac_backlight_enable(void); 39*4882a593Smuzhiyun extern void pmac_backlight_disable(void); 40*4882a593Smuzhiyun 41*4882a593Smuzhiyun #endif /* __KERNEL__ */ 42*4882a593Smuzhiyun #endif 43