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