tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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_video_brightness_flags {
8 u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */
9 u8 _BCL_reversed:1; /* _BCL package is in a reversed order */
10 u8 _BQC_use_index:1; /* _BQC returns an index value */
11};
12
13struct acpi_video_device_brightness {
14 int curr;
15 int count;
16 int *levels;
17 struct acpi_video_brightness_flags flags;
18};
19
20struct acpi_device;
21
22#define ACPI_VIDEO_CLASS "video"
23
24#define ACPI_VIDEO_DISPLAY_CRT 1
25#define ACPI_VIDEO_DISPLAY_TV 2
26#define ACPI_VIDEO_DISPLAY_DVI 3
27#define ACPI_VIDEO_DISPLAY_LCD 4
28
29#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
30#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x0110
31#define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x0200
32
33#define ACPI_VIDEO_NOTIFY_SWITCH 0x80
34#define ACPI_VIDEO_NOTIFY_PROBE 0x81
35#define ACPI_VIDEO_NOTIFY_CYCLE 0x82
36#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT 0x83
37#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT 0x84
38#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS 0x85
39#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS 0x86
40#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS 0x87
41#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS 0x88
42#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF 0x89
43
44enum acpi_backlight_type {
45 acpi_backlight_undef = -1,
46 acpi_backlight_none = 0,
47 acpi_backlight_video,
48 acpi_backlight_vendor,
49 acpi_backlight_native,
50};
51
52#if IS_ENABLED(CONFIG_ACPI_VIDEO)
53extern int acpi_video_register(void);
54extern void acpi_video_unregister(void);
55extern int acpi_video_get_edid(struct acpi_device *device, int type,
56 int device_id, void **edid);
57extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
58extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
59/*
60 * Note: The value returned by acpi_video_handles_brightness_key_presses()
61 * may change over time and should not be cached.
62 */
63extern bool acpi_video_handles_brightness_key_presses(void);
64extern int acpi_video_get_levels(struct acpi_device *device,
65 struct acpi_video_device_brightness **dev_br,
66 int *pmax_level);
67#else
68static inline int acpi_video_register(void) { return -ENODEV; }
69static inline void acpi_video_unregister(void) { return; }
70static inline int acpi_video_get_edid(struct acpi_device *device, int type,
71 int device_id, void **edid)
72{
73 return -ENODEV;
74}
75static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
76{
77 return acpi_backlight_vendor;
78}
79static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
80{
81}
82static inline bool acpi_video_handles_brightness_key_presses(void)
83{
84 return false;
85}
86static inline int acpi_video_get_levels(struct acpi_device *device,
87 struct acpi_video_device_brightness **dev_br,
88 int *pmax_level)
89{
90 return -ENODEV;
91}
92#endif
93
94#endif