1 /* SPDX-License-Identifier: GPL-2.0 */ <<
2 #ifndef __ACPI_VIDEO_H 1 #ifndef __ACPI_VIDEO_H
3 #define __ACPI_VIDEO_H 2 #define __ACPI_VIDEO_H
4 3
5 #include <linux/errno.h> /* for ENODEV */ 4 #include <linux/errno.h> /* for ENODEV */
6 #include <linux/types.h> /* for bool */ <<
7 <<
8 struct acpi_video_brightness_flags { <<
9 u8 _BCL_no_ac_battery_levels:1; /* no <<
10 u8 _BCL_reversed:1; /* _BC <<
11 u8 _BQC_use_index:1; /* _BQ <<
12 }; <<
13 <<
14 struct acpi_video_device_brightness { <<
15 int curr; <<
16 int count; <<
17 int *levels; <<
18 struct acpi_video_brightness_flags fla <<
19 }; <<
20 5
21 struct acpi_device; 6 struct acpi_device;
22 7
23 #define ACPI_VIDEO_CLASS "video" 8 #define ACPI_VIDEO_CLASS "video"
24 9
25 #define ACPI_VIDEO_DISPLAY_CRT 1 10 #define ACPI_VIDEO_DISPLAY_CRT 1
26 #define ACPI_VIDEO_DISPLAY_TV 2 11 #define ACPI_VIDEO_DISPLAY_TV 2
27 #define ACPI_VIDEO_DISPLAY_DVI 3 12 #define ACPI_VIDEO_DISPLAY_DVI 3
28 #define ACPI_VIDEO_DISPLAY_LCD 4 13 #define ACPI_VIDEO_DISPLAY_LCD 4
29 14
30 #define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x01 15 #define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
31 #define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x01 16 #define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x0110
32 #define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x02 17 #define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x0200
33 18
34 #define ACPI_VIDEO_NOTIFY_SWITCH <<
35 #define ACPI_VIDEO_NOTIFY_PROBE <<
36 #define ACPI_VIDEO_NOTIFY_CYCLE <<
37 #define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT <<
38 #define ACPI_VIDEO_NOTIFY_PREV_OUTPUT <<
39 #define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS <<
40 #define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS <<
41 #define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS <<
42 #define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS <<
43 #define ACPI_VIDEO_NOTIFY_DISPLAY_OFF <<
44 <<
45 enum acpi_backlight_type { 19 enum acpi_backlight_type {
46 acpi_backlight_undef = -1, 20 acpi_backlight_undef = -1,
47 acpi_backlight_none = 0, 21 acpi_backlight_none = 0,
48 acpi_backlight_video, 22 acpi_backlight_video,
49 acpi_backlight_vendor, 23 acpi_backlight_vendor,
50 acpi_backlight_native, 24 acpi_backlight_native,
51 acpi_backlight_nvidia_wmi_ec, <<
52 acpi_backlight_apple_gmux, <<
53 acpi_backlight_dell_uart, <<
54 }; 25 };
55 26
56 #if IS_ENABLED(CONFIG_ACPI_VIDEO) 27 #if IS_ENABLED(CONFIG_ACPI_VIDEO)
57 extern int acpi_video_register(void); 28 extern int acpi_video_register(void);
58 extern void acpi_video_unregister(void); 29 extern void acpi_video_unregister(void);
59 extern void acpi_video_register_backlight(void <<
60 extern int acpi_video_get_edid(struct acpi_dev 30 extern int acpi_video_get_edid(struct acpi_device *device, int type,
61 int device_id, 31 int device_id, void **edid);
62 /* !! 32 extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
63 * Note: The value returned by acpi_video_hand !! 33 extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
64 * may change over time and should not be cach <<
65 */ <<
66 extern bool acpi_video_handles_brightness_key_ <<
67 extern int acpi_video_get_levels(struct acpi_d <<
68 struct acpi_v <<
69 int *pmax_lev <<
70 <<
71 extern enum acpi_backlight_type __acpi_video_g <<
72 <<
73 <<
74 static inline enum acpi_backlight_type acpi_vi <<
75 { <<
76 return __acpi_video_get_backlight_type <<
77 } <<
78 <<
79 /* <<
80 * This function MUST only be called by GPU dr <<
81 * should register a backlight class device. T <<
82 * if a GPU native backlight device should be <<
83 * the ACPI video-detect code that native GPU <<
84 * Therefor calling this from any place other <<
85 * To check if GPU native backlight control is <<
86 * if (acpi_video_get_backlight_type() == ac <<
87 */ <<
88 static inline bool acpi_video_backlight_use_na <<
89 { <<
90 return __acpi_video_get_backlight_type <<
91 } <<
92 #else 34 #else
93 static inline int acpi_video_register(void) { !! 35 static inline int acpi_video_register(void) { return 0; }
94 static inline void acpi_video_unregister(void) 36 static inline void acpi_video_unregister(void) { return; }
95 static inline void acpi_video_register_backlig <<
96 static inline int acpi_video_get_edid(struct a 37 static inline int acpi_video_get_edid(struct acpi_device *device, int type,
97 int devi 38 int device_id, void **edid)
98 { 39 {
99 return -ENODEV; 40 return -ENODEV;
100 } 41 }
101 static inline enum acpi_backlight_type acpi_vi 42 static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
102 { 43 {
103 return acpi_backlight_vendor; 44 return acpi_backlight_vendor;
104 } 45 }
105 static inline bool acpi_video_backlight_use_na !! 46 static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
106 { 47 {
107 return true; <<
108 } <<
109 static inline bool acpi_video_handles_brightne <<
110 { <<
111 return false; <<
112 } <<
113 static inline int acpi_video_get_levels(struct <<
114 struct acpi_video_devi <<
115 int *pmax_level) <<
116 { <<
117 return -ENODEV; <<
118 } 48 }
119 #endif 49 #endif
120 50
121 #endif 51 #endif
122 52
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