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/* SPDX-License-Identifier: GPL-2.0 */
  2#ifndef __ACPI_VIDEO_H
  3#define __ACPI_VIDEO_H
  4
  5#include <linux/errno.h> /* for ENODEV */
  6#include <linux/types.h> /* for bool */
  7
  8struct acpi_video_brightness_flags {
  9	u8 _BCL_no_ac_battery_levels:1;	/* no AC/Battery levels in _BCL */
 10	u8 _BCL_reversed:1;		/* _BCL package is in a reversed order */
 11	u8 _BQC_use_index:1;		/* _BQC returns an index value */
 12};
 13
 14struct acpi_video_device_brightness {
 15	int curr;
 16	int count;
 17	int *levels;
 18	struct acpi_video_brightness_flags flags;
 19};
 20
 21struct acpi_device;
 22
 23#define ACPI_VIDEO_CLASS	"video"
 24
 25#define ACPI_VIDEO_DISPLAY_CRT  1
 26#define ACPI_VIDEO_DISPLAY_TV   2
 27#define ACPI_VIDEO_DISPLAY_DVI  3
 28#define ACPI_VIDEO_DISPLAY_LCD  4
 29
 30#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
 31#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL   0x0110
 32#define ACPI_VIDEO_DISPLAY_LEGACY_TV      0x0200
 33
 34#define ACPI_VIDEO_NOTIFY_SWITCH		0x80
 35#define ACPI_VIDEO_NOTIFY_PROBE			0x81
 36#define ACPI_VIDEO_NOTIFY_CYCLE			0x82
 37#define ACPI_VIDEO_NOTIFY_NEXT_OUTPUT		0x83
 38#define ACPI_VIDEO_NOTIFY_PREV_OUTPUT		0x84
 39#define ACPI_VIDEO_NOTIFY_CYCLE_BRIGHTNESS	0x85
 40#define ACPI_VIDEO_NOTIFY_INC_BRIGHTNESS	0x86
 41#define ACPI_VIDEO_NOTIFY_DEC_BRIGHTNESS	0x87
 42#define ACPI_VIDEO_NOTIFY_ZERO_BRIGHTNESS	0x88
 43#define ACPI_VIDEO_NOTIFY_DISPLAY_OFF		0x89
 44
 45enum acpi_backlight_type {
 46	acpi_backlight_undef = -1,
 47	acpi_backlight_none = 0,
 48	acpi_backlight_video,
 49	acpi_backlight_vendor,
 50	acpi_backlight_native,
 51	acpi_backlight_nvidia_wmi_ec,
 52	acpi_backlight_apple_gmux,
 53};
 54
 55#if IS_ENABLED(CONFIG_ACPI_VIDEO)
 56extern void acpi_video_report_nolcd(void);
 57extern int acpi_video_register(void);
 58extern void acpi_video_unregister(void);
 59extern void acpi_video_register_backlight(void);
 60extern int acpi_video_get_edid(struct acpi_device *device, int type,
 61			       int device_id, void **edid);
 62extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
 63extern bool acpi_video_backlight_use_native(void);
 64/*
 65 * Note: The value returned by acpi_video_handles_brightness_key_presses()
 66 * may change over time and should not be cached.
 67 */
 68extern bool acpi_video_handles_brightness_key_presses(void);
 69extern int acpi_video_get_levels(struct acpi_device *device,
 70				 struct acpi_video_device_brightness **dev_br,
 71				 int *pmax_level);
 72#else
 73static inline void acpi_video_report_nolcd(void) { return; };
 74static inline int acpi_video_register(void) { return -ENODEV; }
 75static inline void acpi_video_unregister(void) { return; }
 76static inline void acpi_video_register_backlight(void) { return; }
 77static inline int acpi_video_get_edid(struct acpi_device *device, int type,
 78				      int device_id, void **edid)
 79{
 80	return -ENODEV;
 81}
 82static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
 83{
 84	return acpi_backlight_vendor;
 85}
 86static inline bool acpi_video_backlight_use_native(void)
 87{
 88	return true;
 89}
 90static inline bool acpi_video_handles_brightness_key_presses(void)
 91{
 92	return false;
 93}
 94static inline int acpi_video_get_levels(struct acpi_device *device,
 95			struct acpi_video_device_brightness **dev_br,
 96			int *pmax_level)
 97{
 98	return -ENODEV;
 99}
100#endif
101
102#endif