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/** @file
EDID Override Protocol from the UEFI 2.0 specification.
Allow platform to provide EDID information to producer of the Graphics Output
protocol.
Copyright (c) 2006 - 2008, Intel Corporation
All rights reserved. This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution. The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php
THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
**/
#ifndef __EDID_OVERRIDE_H__
#define __EDID_OVERRIDE_H__
#include <PiDxe.h>
#define EFI_EDID_OVERRIDE_PROTOCOL_GUID \
{ \
0x48ecb431, 0xfb72, 0x45c0, {0xa9, 0x22, 0xf4, 0x58, 0xfe, 0x4, 0xb, 0xd5 } \
}
typedef struct _EFI_EDID_OVERRIDE_PROTOCOL EFI_EDID_OVERRIDE_PROTOCOL;
#define EFI_EDID_OVERRIDE_DONT_OVERRIDE 0x01
#define EFI_EDID_OVERRIDE_ENABLE_HOT_PLUG 0x02
/**
Return the current video mode information.
@param This Protocol instance pointer.
@param ChildHandle A child handle produced by the Graphics Output EFI
driver that represents a video output device.
@param Attributes The attributes associated with ChildHandle video output device.
@param EdidSize A pointer to the size, in bytes, of the Edid buffer.
@param Edid A pointer to callee allocated buffer that contains the EDID that
should be used for ChildHandle. A value of NULL
represents no EDID override for ChildHandle.
@retval EFI_SUCCESS Valid overrides returned for ChildHandle.
@retval EFI_UNSUPPORTED ChildHandle has no overrides.
**/
typedef
EFI_STATUS
(EFIAPI *EFI_EDID_OVERRIDE_PROTOCOL_GET_EDID)(
IN EFI_EDID_OVERRIDE_PROTOCOL *This,
IN EFI_HANDLE *ChildHandle,
OUT UINT32 *Attributes,
IN OUT UINTN *EdidSize,
IN OUT UINT8 **Edid
);
/**
@par Protocol Description:
This protocol is produced by the platform to allow the platform to provide
EDID information to the producer of the Graphics Output protocol.
@param GetEdid
Returns EDID values and attributes that the Video BIOS must use.
**/
struct _EFI_EDID_OVERRIDE_PROTOCOL {
EFI_EDID_OVERRIDE_PROTOCOL_GET_EDID GetEdid;
};
extern EFI_GUID gEfiEdidOverrideProtocolGuid;
#endif
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