1#ifndef __ACPI_VIDEO_H
 2#define __ACPI_VIDEO_H
 3
 4#include <linux/errno.h> /* for ENODEV */
 
 5
 6struct acpi_device;
 7
 8#define ACPI_VIDEO_CLASS	"video"
 9
10#define ACPI_VIDEO_DISPLAY_CRT  1
11#define ACPI_VIDEO_DISPLAY_TV   2
12#define ACPI_VIDEO_DISPLAY_DVI  3
13#define ACPI_VIDEO_DISPLAY_LCD  4
14
15#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
16#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL   0x0110
17#define ACPI_VIDEO_DISPLAY_LEGACY_TV      0x0200
18
19#if (defined CONFIG_ACPI_VIDEO || defined CONFIG_ACPI_VIDEO_MODULE)
 
 
 
 
 
 
 
 
20extern int acpi_video_register(void);
21extern void acpi_video_unregister(void);
22extern int acpi_video_get_edid(struct acpi_device *device, int type,
23			       int device_id, void **edid);
 
 
 
 
 
 
 
24#else
25static inline int acpi_video_register(void) { return 0; }
26static inline void acpi_video_unregister(void) { return; }
27static inline int acpi_video_get_edid(struct acpi_device *device, int type,
28				      int device_id, void **edid)
29{
30	return -ENODEV;
 
 
 
 
 
 
 
 
 
 
 
31}
32#endif
33
34#endif

 1#ifndef __ACPI_VIDEO_H
 2#define __ACPI_VIDEO_H
 3
 4#include <linux/errno.h> /* for ENODEV */
 5#include <linux/types.h> /* for bool */
 6
 7struct acpi_device;
 8
 9#define ACPI_VIDEO_CLASS	"video"
10
11#define ACPI_VIDEO_DISPLAY_CRT  1
12#define ACPI_VIDEO_DISPLAY_TV   2
13#define ACPI_VIDEO_DISPLAY_DVI  3
14#define ACPI_VIDEO_DISPLAY_LCD  4
15
16#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
17#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL   0x0110
18#define ACPI_VIDEO_DISPLAY_LEGACY_TV      0x0200
19
20enum acpi_backlight_type {
21	acpi_backlight_undef = -1,
22	acpi_backlight_none = 0,
23	acpi_backlight_video,
24	acpi_backlight_vendor,
25	acpi_backlight_native,
26};
27
28#if IS_ENABLED(CONFIG_ACPI_VIDEO)
29extern int acpi_video_register(void);
30extern void acpi_video_unregister(void);
31extern int acpi_video_get_edid(struct acpi_device *device, int type,
32			       int device_id, void **edid);
33extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
34extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
35/*
36 * Note: The value returned by acpi_video_handles_brightness_key_presses()
37 * may change over time and should not be cached.
38 */
39extern bool acpi_video_handles_brightness_key_presses(void);
40#else
41static inline int acpi_video_register(void) { return 0; }
42static inline void acpi_video_unregister(void) { return; }
43static inline int acpi_video_get_edid(struct acpi_device *device, int type,
44				      int device_id, void **edid)
45{
46	return -ENODEV;
47}
48static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
49{
50	return acpi_backlight_vendor;
51}
52static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
53{
54}
55static inline bool acpi_video_handles_brightness_key_presses(void)
56{
57	return false;
58}
59#endif
60
61#endif