Subrata Banik | 20fe24b | 2021-12-09 02:46:38 +0530 | [diff] [blame] | 1 | /** @file |
| 2 | EDID Override Protocol from the UEFI 2.0 specification. |
| 3 | |
| 4 | Allow platform to provide EDID information to the producer of the Graphics Output |
| 5 | protocol. |
| 6 | |
| 7 | Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR> |
| 8 | SPDX-License-Identifier: BSD-2-Clause-Patent |
| 9 | |
| 10 | **/ |
| 11 | |
| 12 | #ifndef __EDID_OVERRIDE_H__ |
| 13 | #define __EDID_OVERRIDE_H__ |
| 14 | |
| 15 | #define EFI_EDID_OVERRIDE_PROTOCOL_GUID \ |
| 16 | { \ |
| 17 | 0x48ecb431, 0xfb72, 0x45c0, {0xa9, 0x22, 0xf4, 0x58, 0xfe, 0x4, 0xb, 0xd5 } \ |
| 18 | } |
| 19 | |
| 20 | typedef struct _EFI_EDID_OVERRIDE_PROTOCOL EFI_EDID_OVERRIDE_PROTOCOL; |
| 21 | |
| 22 | #define EFI_EDID_OVERRIDE_DONT_OVERRIDE 0x01 |
| 23 | #define EFI_EDID_OVERRIDE_ENABLE_HOT_PLUG 0x02 |
| 24 | |
| 25 | /** |
| 26 | Returns policy information and potentially a replacement EDID for the specified video output device. |
| 27 | |
| 28 | @param This The EFI_EDID_OVERRIDE_PROTOCOL instance. |
| 29 | @param ChildHandle A child handle produced by the Graphics Output EFI |
| 30 | driver that represents a video output device. |
| 31 | @param Attributes The attributes associated with ChildHandle video output device. |
| 32 | @param EdidSize A pointer to the size, in bytes, of the Edid buffer. |
| 33 | @param Edid A pointer to callee allocated buffer that contains the EDID that |
| 34 | should be used for ChildHandle. A value of NULL |
| 35 | represents no EDID override for ChildHandle. |
| 36 | |
| 37 | @retval EFI_SUCCESS Valid overrides returned for ChildHandle. |
| 38 | @retval EFI_UNSUPPORTED ChildHandle has no overrides. |
| 39 | |
| 40 | **/ |
| 41 | typedef |
| 42 | EFI_STATUS |
| 43 | (EFIAPI *EFI_EDID_OVERRIDE_PROTOCOL_GET_EDID)( |
| 44 | IN EFI_EDID_OVERRIDE_PROTOCOL *This, |
| 45 | IN EFI_HANDLE *ChildHandle, |
| 46 | OUT UINT32 *Attributes, |
| 47 | OUT UINTN *EdidSize, |
| 48 | OUT UINT8 **Edid |
| 49 | ); |
| 50 | |
| 51 | /// |
| 52 | /// This protocol is produced by the platform to allow the platform to provide |
| 53 | /// EDID information to the producer of the Graphics Output protocol. |
| 54 | /// |
| 55 | struct _EFI_EDID_OVERRIDE_PROTOCOL { |
| 56 | EFI_EDID_OVERRIDE_PROTOCOL_GET_EDID GetEdid; |
| 57 | }; |
| 58 | |
| 59 | extern EFI_GUID gEfiEdidOverrideProtocolGuid; |
| 60 | |
| 61 | #endif |