f5a3d0c408
opregion-based platforms will send ACPI video event 0x80 for a range of notification types for legacy compatibility. This is interpreted as a display switch event, which may not be appropriate in the circumstances. When we receive such an event we should make sure that the platform is genuinely requesting a display switch before passing that event through to userspace. Signed-off-by: Matthew Garrett <mjg@redhat.com> Tested-by: Adam Jackson <ajax@redhat.com> Signed-off-by: Keith Packard <keithp@keithp.com>
34 lines
958 B
C
34 lines
958 B
C
#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
|
|
|
|
#if (defined CONFIG_ACPI_VIDEO || defined CONFIG_ACPI_VIDEO_MODULE)
|
|
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);
|
|
#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;
|
|
}
|
|
#endif
|
|
|
|
#endif
|