include/acpi/video.h

   1 #ifndef __ACPI_VIDEO_H
   2 #define __ACPI_VIDEO_H
   3
   4 #include <linux/errno.h> /* for ENODEV */
   5
   6 struct 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 enum acpi_backlight_type {
  20         acpi_backlight_undef = -1,
  21         acpi_backlight_none = 0,
  22         acpi_backlight_video,
  23         acpi_backlight_vendor,
  24         acpi_backlight_native,
  25 };
  26
  27 #if IS_ENABLED(CONFIG_ACPI_VIDEO)
  28 extern int acpi_video_register(void);
  29 extern void acpi_video_unregister(void);
  30 extern int acpi_video_get_edid(struct acpi_device *device, int type,
  31                                int device_id, void **edid);
  32 extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
  33 extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
  34 #else
  35 static inline int acpi_video_register(void) { return 0; }
  36 static inline void acpi_video_unregister(void) { return; }
  37 static inline int acpi_video_get_edid(struct acpi_device *device, int type,
  38                                       int device_id, void **edid)
  39 {
  40         return -ENODEV;
  41 }
  42 static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
  43 {
  44         return acpi_backlight_vendor;
  45 }
  46 static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
  47 {
  48 }
  49 #endif
  50
  51 #endif