LXR linux/include/acpi/video.h

   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
  19enum 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)
  28extern int acpi_video_register(void);
  29extern void acpi_video_unregister(void);
  30extern int acpi_video_get_edid(struct acpi_device *device, int type,
  31                               int device_id, void **edid);
  32extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
  33extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
  34#else
  35static inline int acpi_video_register(void) { return 0; }
  36static inline void acpi_video_unregister(void) { return; }
  37static inline int acpi_video_get_edid(struct acpi_device *device, int type,
  38                                      int device_id, void **edid)
  39{
  40        return -ENODEV;
  41}
  42static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
  43{
  44        return acpi_backlight_vendor;
  45}
  46static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
  47{
  48}
  49#endif
  50
  51#endif
  52