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/** @file
EDID Override Protocol from the UEFI 2.0 specification.
Allow platform to provide EDID information to the producer of the Graphics Output
protocol.
Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#ifndef __EDID_OVERRIDE_H__
#define __EDID_OVERRIDE_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
/**
Returns policy information and potentially a replacement EDID for the specified video output device.
@param This The EFI_EDID_OVERRIDE_PROTOCOL instance.
@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
);
///
/// This protocol is produced by the platform to allow the platform to provide
/// EDID information to the producer of the Graphics Output protocol.
///
struct _EFI_EDID_OVERRIDE_PROTOCOL {
EFI_EDID_OVERRIDE_PROTOCOL_GET_EDID GetEdid;
};
extern EFI_GUID gEfiEdidOverrideProtocolGuid;
#endif
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