linux/include/acpi/video.h
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   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
  35
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