1 files changed, 51 insertions, 0 deletions
diff --git a/include/acpi/video.h b/include/acpi/video.h
new file mode 100644
index 000000000000..c62392d9b52a
--- /dev/null
+++ b/include/acpi/video.h
@@ -0,0 +1,51 @@
+#ifndef __ACPI_VIDEO_H
+#define __ACPI_VIDEO_H
+
+#include <linux/errno.h> /* for ENODEV */
+
+struct acpi_device;
+
+#define ACPI_VIDEO_CLASS	"video"
+
+#define ACPI_VIDEO_DISPLAY_CRT  1
+#define ACPI_VIDEO_DISPLAY_TV   2
+#define ACPI_VIDEO_DISPLAY_DVI  3
+#define ACPI_VIDEO_DISPLAY_LCD  4
+
+#define ACPI_VIDEO_DISPLAY_LEGACY_MONITOR 0x0100
+#define ACPI_VIDEO_DISPLAY_LEGACY_PANEL   0x0110
+#define ACPI_VIDEO_DISPLAY_LEGACY_TV      0x0200
+
+enum acpi_backlight_type {
+	acpi_backlight_undef = -1,
+	acpi_backlight_none = 0,
+	acpi_backlight_video,
+	acpi_backlight_vendor,
+	acpi_backlight_native,
+};
+
+#if IS_ENABLED(CONFIG_ACPI_VIDEO)
+extern int acpi_video_register(void);
+extern void acpi_video_unregister(void);
+extern int acpi_video_get_edid(struct acpi_device *device, int type,
+			       int device_id, void **edid);
+extern enum acpi_backlight_type acpi_video_get_backlight_type(void);
+extern void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type);
+#else
+static inline int acpi_video_register(void) { return 0; }
+static inline void acpi_video_unregister(void) { return; }
+static inline int acpi_video_get_edid(struct acpi_device *device, int type,
+				      int device_id, void **edid)
+{
+	return -ENODEV;
+}
+static inline enum acpi_backlight_type acpi_video_get_backlight_type(void)
+{
+	return acpi_backlight_vendor;
+}
+static inline void acpi_video_set_dmi_backlight_type(enum acpi_backlight_type type)
+{
+}
+#endif
+
+#endif