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 */ 5 #include <linux/types.h> /* for bool */
7 6
8 struct acpi_video_brightness_flags { 7 struct acpi_video_brightness_flags {
9 u8 _BCL_no_ac_battery_levels:1; /* no 8 u8 _BCL_no_ac_battery_levels:1; /* no AC/Battery levels in _BCL */
10 u8 _BCL_reversed:1; /* _BC 9 u8 _BCL_reversed:1; /* _BCL package is in a reversed order */
11 u8 _BQC_use_index:1; /* _BQ 10 u8 _BQC_use_index:1; /* _BQC returns an index value */
12 }; 11 };
13 12
14 struct acpi_video_device_brightness { 13 struct acpi_video_device_brightness {
15 int curr; 14 int curr;
16 int count; 15 int count;
17 int *levels; 16 int *levels;
18 struct acpi_video_brightness_flags fla 17 struct acpi_video_brightness_flags flags;
19 }; 18 };
20 19
21 struct acpi_device; 20 struct acpi_device;
22 21
23 #define ACPI_VIDEO_CLASS "video" 22 #define ACPI_VIDEO_CLASS "video"
24 23
25 #define ACPI_VIDEO_DISPLAY_CRT 1 24 #define ACPI_VIDEO_DISPLAY_CRT 1
26 #define ACPI_VIDEO_DISPLAY_TV 2 25 #define ACPI_VIDEO_DISPLAY_TV 2
27 #define ACPI_VIDEO_DISPLAY_DVI 3 26 #define ACPI_VIDEO_DISPLAY_DVI 3
28 #define ACPI_VIDEO_DISPLAY_LCD 4 27 #define ACPI_VIDEO_DISPLAY_LCD 4
29 28
30 #define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x01 29 #define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
31 #define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x01 30 #define ACPI_VIDEO_DISPLAY_LEGACY_PANEL 0x0110
32 #define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x02 31 #define ACPI_VIDEO_DISPLAY_LEGACY_TV 0x0200
33 32
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 { 33 enum acpi_backlight_type {
46 acpi_backlight_undef = -1, 34 acpi_backlight_undef = -1,
47 acpi_backlight_none = 0, 35 acpi_backlight_none = 0,
48 acpi_backlight_video, 36 acpi_backlight_video,
49 acpi_backlight_vendor, 37 acpi_backlight_vendor,
50 acpi_backlight_native, 38 acpi_backlight_native,
51 acpi_backlight_nvidia_wmi_ec, <<
52 acpi_backlight_apple_gmux, <<
53 acpi_backlight_dell_uart, <<
54 }; 39 };
55 40
56 #if IS_ENABLED(CONFIG_ACPI_VIDEO) 41 #if IS_ENABLED(CONFIG_ACPI_VIDEO)
57 extern int acpi_video_register(void); 42 extern int acpi_video_register(void);
58 extern void acpi_video_unregister(void); 43 extern void acpi_video_unregister(void);
59 extern void acpi_video_register_backlight(void <<
60 extern int acpi_video_get_edid(struct acpi_dev 44 extern int acpi_video_get_edid(struct acpi_device *device, int type,
61 int device_id, 45 int device_id, void **edid);
>> 46 extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
>> 47 extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
62 /* 48 /*
63 * Note: The value returned by acpi_video_hand 49 * Note: The value returned by acpi_video_handles_brightness_key_presses()
64 * may change over time and should not be cach 50 * may change over time and should not be cached.
65 */ 51 */
66 extern bool acpi_video_handles_brightness_key_ 52 extern bool acpi_video_handles_brightness_key_presses(void);
67 extern int acpi_video_get_levels(struct acpi_d 53 extern int acpi_video_get_levels(struct acpi_device *device,
68 struct acpi_v 54 struct acpi_video_device_brightness **dev_br,
69 int *pmax_lev 55 int *pmax_level);
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 56 #else
93 static inline int acpi_video_register(void) { 57 static inline int acpi_video_register(void) { return -ENODEV; }
94 static inline void acpi_video_unregister(void) 58 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 59 static inline int acpi_video_get_edid(struct acpi_device *device, int type,
97 int devi 60 int device_id, void **edid)
98 { 61 {
99 return -ENODEV; 62 return -ENODEV;
100 } 63 }
101 static inline enum acpi_backlight_type acpi_vi 64 static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
102 { 65 {
103 return acpi_backlight_vendor; 66 return acpi_backlight_vendor;
104 } 67 }
105 static inline bool acpi_video_backlight_use_na !! 68 static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
106 { 69 {
107 return true; <<
108 } 70 }
109 static inline bool acpi_video_handles_brightne 71 static inline bool acpi_video_handles_brightness_key_presses(void)
110 { 72 {
111 return false; 73 return false;
112 } 74 }
113 static inline int acpi_video_get_levels(struct 75 static inline int acpi_video_get_levels(struct acpi_device *device,
114 struct acpi_video_devi 76 struct acpi_video_device_brightness **dev_br,
115 int *pmax_level) 77 int *pmax_level)
116 { 78 {
117 return -ENODEV; 79 return -ENODEV;
118 } 80 }
119 #endif 81 #endif
120 82
121 #endif 83 #endif
122 84
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