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

 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/fb.h>
14#include <linux/mutex.h>
15
 
 
16/* For locking instructions, see the implementation file */
17extern struct backlight_device *pmac_backlight;
18extern struct mutex pmac_backlight_mutex;
19
20extern int pmac_backlight_curve_lookup(struct fb_info *info, int value);
21
22extern int pmac_has_backlight_type(const char *type);
23
24extern void pmac_backlight_key(int direction);
25static inline void pmac_backlight_key_up(void)
26{
27	pmac_backlight_key(0);
28}
29static inline void pmac_backlight_key_down(void)
30{
31	pmac_backlight_key(1);
32}
33
34extern void pmac_backlight_set_legacy_brightness_pmu(int brightness);
35extern int pmac_backlight_set_legacy_brightness(int brightness);
36extern int pmac_backlight_get_legacy_brightness(void);
37
38extern void pmac_backlight_enable(void);
39extern void pmac_backlight_disable(void);
40
41#endif /* __KERNEL__ */
42#endif