| 1 | /** @file
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| 2 | Read EDID information and parse EDID information.
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| 3 |
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| 4 | Copyright (c) 2008 - 2014, Intel Corporation. All rights reserved.<BR>
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| 5 | This program and the accompanying materials
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| 6 | are licensed and made available under the terms and conditions of the BSD License
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| 7 | which accompanies this distribution. The full text of the license may be found at
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| 8 | http://opensource.org/licenses/bsd-license.php
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| 9 |
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| 10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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| 11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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| 12 |
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| 13 | **/
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| 14 |
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| 15 | #include "CirrusLogic5430.h"
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| 16 | #include "CirrusLogic5430I2c.h"
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| 17 |
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| 18 | //
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| 19 | // EDID block
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| 20 | //
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| 21 | typedef struct {
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| 22 | UINT8 Header[8]; //EDID header "00 FF FF FF FF FF FF 00"
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| 23 | UINT16 ManufactureName; //EISA 3-character ID
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| 24 | UINT16 ProductCode; //Vendor assigned code
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| 25 | UINT32 SerialNumber; //32-bit serial number
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| 26 | UINT8 WeekOfManufacture; //Week number
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| 27 | UINT8 YearOfManufacture; //Year
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| 28 | UINT8 EdidVersion; //EDID Structure Version
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| 29 | UINT8 EdidRevision; //EDID Structure Revision
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| 30 | UINT8 VideoInputDefinition;
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| 31 | UINT8 MaxHorizontalImageSize; //cm
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| 32 | UINT8 MaxVerticalImageSize; //cm
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| 33 | UINT8 DisplayTransferCharacteristic;
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| 34 | UINT8 FeatureSupport;
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| 35 | UINT8 RedGreenLowBits; //Rx1 Rx0 Ry1 Ry0 Gx1 Gx0 Gy1Gy0
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| 36 | UINT8 BlueWhiteLowBits; //Bx1 Bx0 By1 By0 Wx1 Wx0 Wy1 Wy0
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| 37 | UINT8 RedX; //Red-x Bits 9 - 2
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| 38 | UINT8 RedY; //Red-y Bits 9 - 2
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| 39 | UINT8 GreenX; //Green-x Bits 9 - 2
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| 40 | UINT8 GreenY; //Green-y Bits 9 - 2
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| 41 | UINT8 BlueX; //Blue-x Bits 9 - 2
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| 42 | UINT8 BlueY; //Blue-y Bits 9 - 2
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| 43 | UINT8 WhiteX; //White-x Bits 9 - 2
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| 44 | UINT8 WhiteY; //White-x Bits 9 - 2
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| 45 | UINT8 EstablishedTimings[3];
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| 46 | UINT8 StandardTimingIdentification[16];
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| 47 | UINT8 DetailedTimingDescriptions[72];
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| 48 | UINT8 ExtensionFlag; //Number of (optional) 128-byte EDID extension blocks to follow
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| 49 | UINT8 Checksum;
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| 50 | } EDID_BLOCK;
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| 51 |
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| 52 | #define EDID_BLOCK_SIZE 128
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| 53 | #define VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER 17
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| 54 |
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| 55 | typedef struct {
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| 56 | UINT16 HorizontalResolution;
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| 57 | UINT16 VerticalResolution;
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| 58 | UINT16 RefreshRate;
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| 59 | } EDID_TIMING;
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| 60 |
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| 61 | typedef struct {
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| 62 | UINT32 ValidNumber;
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| 63 | UINT32 Key[VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER];
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| 64 | } VALID_EDID_TIMING;
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| 65 |
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| 66 | //
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| 67 | // Standard timing defined by VESA EDID
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| 68 | //
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| 69 | EDID_TIMING mVbeEstablishedEdidTiming[] = {
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| 70 | //
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| 71 | // Established Timing I
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| 72 | //
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| 73 | {800, 600, 60},
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| 74 | {800, 600, 56},
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| 75 | {640, 480, 75},
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| 76 | {640, 480, 72},
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| 77 | {640, 480, 67},
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| 78 | {640, 480, 60},
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| 79 | {720, 400, 88},
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| 80 | {720, 400, 70},
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| 81 | //
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| 82 | // Established Timing II
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| 83 | //
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| 84 | {1280, 1024, 75},
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| 85 | {1024, 768, 75},
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| 86 | {1024, 768, 70},
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| 87 | {1024, 768, 60},
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| 88 | {1024, 768, 87},
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| 89 | {832, 624, 75},
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| 90 | {800, 600, 75},
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| 91 | {800, 600, 72},
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| 92 | //
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| 93 | // Established Timing III
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| 94 | //
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| 95 | {1152, 870, 75}
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| 96 | };
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| 97 |
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| 98 | /**
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| 99 | Read EDID information from I2C Bus on CirrusLogic.
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| 100 |
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| 101 | @param Private Pointer to CIRRUS_LOGIC_5430_PRIVATE_DATA.
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| 102 | @param EdidDataBlock Pointer to EDID data block.
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| 103 | @param EdidSize Returned EDID block size.
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| 104 |
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| 105 | @retval EFI_UNSUPPORTED
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| 106 | @retval EFI_SUCCESS
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| 107 |
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| 108 | **/
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| 109 | EFI_STATUS
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| 110 | ReadEdidData (
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| 111 | CIRRUS_LOGIC_5430_PRIVATE_DATA *Private,
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| 112 | UINT8 **EdidDataBlock,
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| 113 | UINTN *EdidSize
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| 114 | )
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| 115 | {
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| 116 | UINTN Index;
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| 117 | UINT8 EdidData[EDID_BLOCK_SIZE * 2];
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| 118 | UINT8 *ValidEdid;
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| 119 | UINT64 Signature;
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| 120 |
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| 121 | for (Index = 0; Index < EDID_BLOCK_SIZE * 2; Index ++) {
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| 122 | I2cReadByte (Private->PciIo, 0xa0, (UINT8)Index, &EdidData[Index]);
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| 123 | }
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| 124 |
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| 125 | //
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| 126 | // Search for the EDID signature
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| 127 | //
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| 128 | ValidEdid = &EdidData[0];
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| 129 | Signature = 0x00ffffffffffff00ull;
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| 130 | for (Index = 0; Index < EDID_BLOCK_SIZE * 2; Index ++, ValidEdid ++) {
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| 131 | if (CompareMem (ValidEdid, &Signature, 8) == 0) {
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| 132 | break;
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| 133 | }
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| 134 | }
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| 135 |
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| 136 | if (Index == 256) {
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| 137 | //
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| 138 | // No EDID signature found
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| 139 | //
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| 140 | return EFI_UNSUPPORTED;
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| 141 | }
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| 142 |
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| 143 | *EdidDataBlock = AllocateCopyPool (
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| 144 | EDID_BLOCK_SIZE,
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| 145 | ValidEdid
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| 146 | );
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| 147 | if (*EdidDataBlock == NULL) {
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| 148 | return EFI_OUT_OF_RESOURCES;
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| 149 | }
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| 150 |
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| 151 | //
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| 152 | // Currently only support EDID 1.x
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| 153 | //
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| 154 | *EdidSize = EDID_BLOCK_SIZE;
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| 155 |
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| 156 | return EFI_SUCCESS;
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| 157 | }
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| 158 |
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| 159 | /**
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| 160 | Generate a search key for a specified timing data.
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| 161 |
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| 162 | @param EdidTiming Pointer to EDID timing
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| 163 |
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| 164 | @return The 32 bit unique key for search.
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| 165 |
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| 166 | **/
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| 167 | UINT32
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| 168 | CalculateEdidKey (
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| 169 | EDID_TIMING *EdidTiming
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| 170 | )
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| 171 | {
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| 172 | UINT32 Key;
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| 173 |
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| 174 | //
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| 175 | // Be sure no conflicts for all standard timing defined by VESA.
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| 176 | //
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| 177 | Key = (EdidTiming->HorizontalResolution * 2) + EdidTiming->VerticalResolution;
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| 178 | return Key;
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| 179 | }
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| 180 |
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| 181 | /**
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| 182 | Search a specified Timing in all the valid EDID timings.
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| 183 |
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| 184 | @param ValidEdidTiming All valid EDID timing information.
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| 185 | @param EdidTiming The Timing to search for.
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| 186 |
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| 187 | @retval TRUE Found.
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| 188 | @retval FALSE Not found.
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| 189 |
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| 190 | **/
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| 191 | BOOLEAN
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| 192 | SearchEdidTiming (
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| 193 | VALID_EDID_TIMING *ValidEdidTiming,
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| 194 | EDID_TIMING *EdidTiming
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| 195 | )
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| 196 | {
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| 197 | UINT32 Index;
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| 198 | UINT32 Key;
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| 199 |
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| 200 | Key = CalculateEdidKey (EdidTiming);
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| 201 |
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| 202 | for (Index = 0; Index < ValidEdidTiming->ValidNumber; Index ++) {
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| 203 | if (Key == ValidEdidTiming->Key[Index]) {
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| 204 | return TRUE;
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| 205 | }
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| 206 | }
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| 207 |
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| 208 | return FALSE;
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| 209 | }
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| 210 |
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| 211 | /**
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| 212 | Parse the Established Timing and Standard Timing in EDID data block.
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| 213 |
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| 214 | @param EdidBuffer Pointer to EDID data block
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| 215 | @param ValidEdidTiming Valid EDID timing information
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| 216 |
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| 217 | @retval TRUE The EDID data is valid.
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| 218 | @retval FALSE The EDID data is invalid.
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| 219 |
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| 220 | **/
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| 221 | BOOLEAN
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| 222 | ParseEdidData (
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| 223 | UINT8 *EdidBuffer,
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| 224 | VALID_EDID_TIMING *ValidEdidTiming
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| 225 | )
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| 226 | {
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| 227 | UINT8 CheckSum;
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| 228 | UINT32 Index;
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| 229 | UINT32 ValidNumber;
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| 230 | UINT32 TimingBits;
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| 231 | UINT8 *BufferIndex;
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| 232 | UINT16 HorizontalResolution;
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| 233 | UINT16 VerticalResolution;
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| 234 | UINT8 AspectRatio;
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| 235 | UINT8 RefreshRate;
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| 236 | EDID_TIMING TempTiming;
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| 237 | EDID_BLOCK *EdidDataBlock;
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| 238 |
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| 239 | EdidDataBlock = (EDID_BLOCK *) EdidBuffer;
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| 240 |
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| 241 | //
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| 242 | // Check the checksum of EDID data
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| 243 | //
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| 244 | CheckSum = 0;
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| 245 | for (Index = 0; Index < EDID_BLOCK_SIZE; Index ++) {
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| 246 | CheckSum = (UINT8) (CheckSum + EdidBuffer[Index]);
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| 247 | }
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| 248 | if (CheckSum != 0) {
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| 249 | return FALSE;
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| 250 | }
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| 251 |
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| 252 | ValidNumber = 0;
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| 253 | SetMem (ValidEdidTiming, sizeof (VALID_EDID_TIMING), 0);
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| 254 |
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| 255 | if ((EdidDataBlock->EstablishedTimings[0] != 0) ||
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| 256 | (EdidDataBlock->EstablishedTimings[1] != 0) ||
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| 257 | (EdidDataBlock->EstablishedTimings[2] != 0)
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| 258 | ) {
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| 259 | //
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| 260 | // Established timing data
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| 261 | //
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| 262 | TimingBits = EdidDataBlock->EstablishedTimings[0] |
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| 263 | (EdidDataBlock->EstablishedTimings[1] << 8) |
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| 264 | ((EdidDataBlock->EstablishedTimings[2] & 0x80) << 9) ;
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| 265 | for (Index = 0; Index < VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER; Index ++) {
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| 266 | if (TimingBits & 0x1) {
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| 267 | ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&mVbeEstablishedEdidTiming[Index]);
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| 268 | ValidNumber ++;
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| 269 | }
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| 270 | TimingBits = TimingBits >> 1;
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| 271 | }
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| 272 | } else {
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| 273 | //
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| 274 | // If no Established timing data, read the standard timing data
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| 275 | //
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| 276 | BufferIndex = &EdidDataBlock->StandardTimingIdentification[0];
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| 277 | for (Index = 0; Index < 8; Index ++) {
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| 278 | if ((BufferIndex[0] != 0x1) && (BufferIndex[1] != 0x1)){
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| 279 | //
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| 280 | // A valid Standard Timing
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| 281 | //
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| 282 | HorizontalResolution = (UINT16) (BufferIndex[0] * 8 + 248);
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| 283 | AspectRatio = (UINT8) (BufferIndex[1] >> 6);
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| 284 | switch (AspectRatio) {
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| 285 | case 0:
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| 286 | VerticalResolution = (UINT16) (HorizontalResolution / 16 * 10);
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| 287 | break;
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| 288 | case 1:
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| 289 | VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);
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| 290 | break;
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| 291 | case 2:
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| 292 | VerticalResolution = (UINT16) (HorizontalResolution / 5 * 4);
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| 293 | break;
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| 294 | case 3:
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| 295 | VerticalResolution = (UINT16) (HorizontalResolution / 16 * 9);
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| 296 | break;
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| 297 | default:
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| 298 | VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);
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| 299 | break;
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| 300 | }
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| 301 | RefreshRate = (UINT8) ((BufferIndex[1] & 0x1f) + 60);
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| 302 | TempTiming.HorizontalResolution = HorizontalResolution;
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| 303 | TempTiming.VerticalResolution = VerticalResolution;
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| 304 | TempTiming.RefreshRate = RefreshRate;
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| 305 | ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);
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| 306 | ValidNumber ++;
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| 307 | }
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| 308 | BufferIndex += 2;
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| 309 | }
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| 310 | }
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| 311 |
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| 312 | ValidEdidTiming->ValidNumber = ValidNumber;
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| 313 | return TRUE;
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| 314 | }
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| 315 |
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| 316 | /**
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| 317 | Construct the valid video modes for CirrusLogic5430.
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| 318 |
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| 319 | **/
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| 320 | EFI_STATUS
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| 321 | CirrusLogic5430VideoModeSetup (
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| 322 | CIRRUS_LOGIC_5430_PRIVATE_DATA *Private
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| 323 | )
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| 324 | {
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| 325 | EFI_STATUS Status;
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| 326 | UINT32 Index;
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| 327 | BOOLEAN EdidFound;
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| 328 | EFI_EDID_OVERRIDE_PROTOCOL *EdidOverride;
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| 329 | UINT32 EdidAttributes;
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| 330 | BOOLEAN EdidOverrideFound;
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| 331 | UINTN EdidOverrideDataSize;
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| 332 | UINT8 *EdidOverrideDataBlock;
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| 333 | UINTN EdidDiscoveredDataSize;
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| 334 | UINT8 *EdidDiscoveredDataBlock;
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| 335 | UINTN EdidActiveDataSize;
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| 336 | UINT8 *EdidActiveDataBlock;
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| 337 | VALID_EDID_TIMING ValidEdidTiming;
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| 338 | UINT32 ValidModeCount;
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| 339 | CIRRUS_LOGIC_5430_MODE_DATA *ModeData;
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| 340 | BOOLEAN TimingMatch;
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| 341 | CIRRUS_LOGIC_5430_VIDEO_MODES *VideoMode;
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| 342 | EDID_TIMING TempTiming;
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| 343 |
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| 344 | //
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| 345 | // setup EDID information
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| 346 | //
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| 347 | Private->EdidDiscovered.Edid = NULL;
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| 348 | Private->EdidDiscovered.SizeOfEdid = 0;
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| 349 | Private->EdidActive.Edid = NULL;
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| 350 | Private->EdidActive.SizeOfEdid = 0;
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| 351 |
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| 352 | EdidFound = FALSE;
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| 353 | EdidOverrideFound = FALSE;
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| 354 | EdidAttributes = 0xff;
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| 355 | EdidOverrideDataSize = 0;
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| 356 | EdidOverrideDataBlock = NULL;
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| 357 | EdidActiveDataSize = 0;
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| 358 | EdidActiveDataBlock = NULL;
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| 359 | EdidDiscoveredDataBlock = NULL;
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| 360 |
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| 361 | //
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| 362 | // Find EDID Override protocol firstly, this protocol is installed by platform if needed.
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| 363 | //
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| 364 | Status = gBS->LocateProtocol (
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| 365 | &gEfiEdidOverrideProtocolGuid,
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| 366 | NULL,
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| 367 | (VOID **) &EdidOverride
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| 368 | );
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| 369 | if (!EFI_ERROR (Status)) {
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| 370 | //
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| 371 | // Allocate double size of VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE to avoid overflow
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| 372 | //
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| 373 | EdidOverrideDataBlock = AllocatePool (EDID_BLOCK_SIZE * 2);
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| 374 | if (NULL == EdidOverrideDataBlock) {
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| 375 | Status = EFI_OUT_OF_RESOURCES;
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| 376 | goto Done;
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| 377 | }
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| 378 |
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| 379 | Status = EdidOverride->GetEdid (
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| 380 | EdidOverride,
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| 381 | Private->Handle,
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| 382 | &EdidAttributes,
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| 383 | &EdidOverrideDataSize,
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| 384 | (UINT8 **) &EdidOverrideDataBlock
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| 385 | );
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| 386 | if (!EFI_ERROR (Status) &&
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| 387 | EdidAttributes == 0 &&
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| 388 | EdidOverrideDataSize != 0) {
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| 389 | //
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| 390 | // Succeeded to get EDID Override Data
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| 391 | //
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| 392 | EdidOverrideFound = TRUE;
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| 393 | }
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| 394 | }
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| 395 |
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| 396 | if (EdidOverrideFound != TRUE || EdidAttributes == EFI_EDID_OVERRIDE_DONT_OVERRIDE) {
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| 397 | //
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| 398 | // If EDID Override data doesn't exist or EFI_EDID_OVERRIDE_DONT_OVERRIDE returned,
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| 399 | // read EDID information through I2C Bus
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| 400 | //
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| 401 | if (ReadEdidData (Private, &EdidDiscoveredDataBlock, &EdidDiscoveredDataSize) == EFI_SUCCESS) {
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| 402 | Private->EdidDiscovered.SizeOfEdid = (UINT32) EdidDiscoveredDataSize;
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| 403 | Private->EdidDiscovered.Edid = (UINT8 *) AllocateCopyPool (
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| 404 | EdidDiscoveredDataSize,
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| 405 | EdidDiscoveredDataBlock
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| 406 | );
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| 407 |
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| 408 | if (NULL == Private->EdidDiscovered.Edid) {
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| 409 | Status = EFI_OUT_OF_RESOURCES;
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| 410 | goto Done;
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| 411 | }
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| 412 |
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| 413 | EdidActiveDataSize = Private->EdidDiscovered.SizeOfEdid;
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| 414 | EdidActiveDataBlock = Private->EdidDiscovered.Edid;
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| 415 |
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| 416 | EdidFound = TRUE;
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| 417 | }
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| 418 | }
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| 419 |
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| 420 | if (EdidFound != TRUE && EdidOverrideFound == TRUE) {
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| 421 | EdidActiveDataSize = EdidOverrideDataSize;
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| 422 | EdidActiveDataBlock = EdidOverrideDataBlock;
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| 423 | EdidFound = TRUE;
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| 424 | }
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| 425 |
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| 426 | if (EdidFound == TRUE) {
|
|---|
| 427 | //
|
|---|
| 428 | // Parse EDID data structure to retrieve modes supported by monitor
|
|---|
| 429 | //
|
|---|
| 430 | if (ParseEdidData ((UINT8 *) EdidActiveDataBlock, &ValidEdidTiming) == TRUE) {
|
|---|
| 431 | //
|
|---|
| 432 | // Copy EDID Override Data to EDID Active Data
|
|---|
| 433 | //
|
|---|
| 434 | Private->EdidActive.SizeOfEdid = (UINT32) EdidActiveDataSize;
|
|---|
| 435 | Private->EdidActive.Edid = (UINT8 *) AllocateCopyPool (
|
|---|
| 436 | EdidActiveDataSize,
|
|---|
| 437 | EdidActiveDataBlock
|
|---|
| 438 | );
|
|---|
| 439 | if (NULL == Private->EdidActive.Edid) {
|
|---|
| 440 | Status = EFI_OUT_OF_RESOURCES;
|
|---|
| 441 | goto Done;
|
|---|
| 442 | }
|
|---|
| 443 | }
|
|---|
| 444 | } else {
|
|---|
| 445 | Private->EdidActive.SizeOfEdid = 0;
|
|---|
| 446 | Private->EdidActive.Edid = NULL;
|
|---|
| 447 | EdidFound = FALSE;
|
|---|
| 448 | }
|
|---|
| 449 |
|
|---|
| 450 | if (EdidFound) {
|
|---|
| 451 | //
|
|---|
| 452 | // Initialize the private mode data with the supported modes.
|
|---|
| 453 | //
|
|---|
| 454 | ValidModeCount = 0;
|
|---|
| 455 | ModeData = &Private->ModeData[0];
|
|---|
| 456 | VideoMode = &CirrusLogic5430VideoModes[0];
|
|---|
| 457 | for (Index = 0; Index < CIRRUS_LOGIC_5430_MODE_COUNT; Index++) {
|
|---|
| 458 |
|
|---|
| 459 | TimingMatch = TRUE;
|
|---|
| 460 |
|
|---|
| 461 | //
|
|---|
| 462 | // Check whether match with CirrusLogic5430 video mode
|
|---|
| 463 | //
|
|---|
| 464 | TempTiming.HorizontalResolution = (UINT16) VideoMode->Width;
|
|---|
| 465 | TempTiming.VerticalResolution = (UINT16) VideoMode->Height;
|
|---|
| 466 | TempTiming.RefreshRate = (UINT16) VideoMode->RefreshRate;
|
|---|
| 467 | if (SearchEdidTiming (&ValidEdidTiming, &TempTiming) != TRUE) {
|
|---|
| 468 | TimingMatch = FALSE;
|
|---|
| 469 | }
|
|---|
| 470 |
|
|---|
| 471 | //
|
|---|
| 472 | // Not export Mode 0x0 as GOP mode, this is not defined in spec.
|
|---|
| 473 | //
|
|---|
| 474 | if ((VideoMode->Width == 0) || (VideoMode->Height == 0)) {
|
|---|
| 475 | TimingMatch = FALSE;
|
|---|
| 476 | }
|
|---|
| 477 |
|
|---|
| 478 | if (TimingMatch) {
|
|---|
| 479 | ModeData->ModeNumber = Index;
|
|---|
| 480 | ModeData->HorizontalResolution = VideoMode->Width;
|
|---|
| 481 | ModeData->VerticalResolution = VideoMode->Height;
|
|---|
| 482 | ModeData->ColorDepth = VideoMode->ColorDepth;
|
|---|
| 483 | ModeData->RefreshRate = VideoMode->RefreshRate;
|
|---|
| 484 |
|
|---|
| 485 | ModeData ++;
|
|---|
| 486 | ValidModeCount ++;
|
|---|
| 487 | }
|
|---|
| 488 |
|
|---|
| 489 | VideoMode ++;
|
|---|
| 490 | }
|
|---|
| 491 |
|
|---|
| 492 | Private->MaxMode = ValidModeCount;
|
|---|
| 493 |
|
|---|
| 494 | } else {
|
|---|
| 495 | //
|
|---|
| 496 | // If EDID information wasn't found
|
|---|
| 497 | //
|
|---|
| 498 | ModeData = &Private->ModeData[0];
|
|---|
| 499 | VideoMode = &CirrusLogic5430VideoModes[0];
|
|---|
| 500 | for (Index = 0; Index < CIRRUS_LOGIC_5430_MODE_COUNT; Index ++) {
|
|---|
| 501 | ModeData->ModeNumber = Index;
|
|---|
| 502 | ModeData->HorizontalResolution = VideoMode->Width;
|
|---|
| 503 | ModeData->VerticalResolution = VideoMode->Height;
|
|---|
| 504 | ModeData->ColorDepth = VideoMode->ColorDepth;
|
|---|
| 505 | ModeData->RefreshRate = VideoMode->RefreshRate;
|
|---|
| 506 |
|
|---|
| 507 | ModeData ++ ;
|
|---|
| 508 | VideoMode ++;
|
|---|
| 509 | }
|
|---|
| 510 | Private->MaxMode = CIRRUS_LOGIC_5430_MODE_COUNT;
|
|---|
| 511 | }
|
|---|
| 512 |
|
|---|
| 513 | if (EdidOverrideDataBlock != NULL) {
|
|---|
| 514 | FreePool (EdidOverrideDataBlock);
|
|---|
| 515 | }
|
|---|
| 516 |
|
|---|
| 517 | return EFI_SUCCESS;
|
|---|
| 518 |
|
|---|
| 519 | Done:
|
|---|
| 520 | if (EdidOverrideDataBlock != NULL) {
|
|---|
| 521 | FreePool (EdidOverrideDataBlock);
|
|---|
| 522 | }
|
|---|
| 523 | if (Private->EdidDiscovered.Edid != NULL) {
|
|---|
| 524 | FreePool (Private->EdidDiscovered.Edid);
|
|---|
| 525 | }
|
|---|
| 526 | if (Private->EdidDiscovered.Edid != NULL) {
|
|---|
| 527 | FreePool (Private->EdidActive.Edid);
|
|---|
| 528 | }
|
|---|
| 529 |
|
|---|
| 530 | return EFI_DEVICE_ERROR;
|
|---|
| 531 | }
|
|---|
