31f9e631 |
1 | /** @file\r |
2 | Read EDID information and parse EDID information.\r |
3 | \r |
4 | Copyright (c) 2008, Intel Corporation\r |
5 | All rights reserved. This program and the accompanying materials\r |
6 | are licensed and made available under the terms and conditions of the BSD License\r |
7 | which accompanies this distribution. The full text of the license may be found at\r |
8 | http://opensource.org/licenses/bsd-license.php\r |
9 | \r |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r |
12 | \r |
13 | **/\r |
14 | \r |
15 | #include "CirrusLogic5430.h"\r |
2e293897 |
16 | #include "CirrusLogic5430I2c.h"\r |
31f9e631 |
17 | \r |
18 | //\r |
19 | // EDID block\r |
20 | //\r |
21 | typedef struct {\r |
22 | UINT8 Header[8]; //EDID header "00 FF FF FF FF FF FF 00"\r |
23 | UINT16 ManufactureName; //EISA 3-character ID\r |
24 | UINT16 ProductCode; //Vendor assigned code\r |
25 | UINT32 SerialNumber; //32-bit serial number\r |
26 | UINT8 WeekOfManufacture; //Week number\r |
27 | UINT8 YearOfManufacture; //Year\r |
28 | UINT8 EdidVersion; //EDID Structure Version\r |
29 | UINT8 EdidRevision; //EDID Structure Revision\r |
30 | UINT8 VideoInputDefinition;\r |
31 | UINT8 MaxHorizontalImageSize; //cm\r |
32 | UINT8 MaxVerticalImageSize; //cm\r |
33 | UINT8 DisplayTransferCharacteristic;\r |
34 | UINT8 FeatureSupport;\r |
35 | UINT8 RedGreenLowBits; //Rx1 Rx0 Ry1 Ry0 Gx1 Gx0 Gy1Gy0\r |
36 | UINT8 BlueWhiteLowBits; //Bx1 Bx0 By1 By0 Wx1 Wx0 Wy1 Wy0\r |
37 | UINT8 RedX; //Red-x Bits 9 - 2\r |
38 | UINT8 RedY; //Red-y Bits 9 - 2\r |
39 | UINT8 GreenX; //Green-x Bits 9 - 2\r |
40 | UINT8 GreenY; //Green-y Bits 9 - 2\r |
41 | UINT8 BlueX; //Blue-x Bits 9 - 2\r |
42 | UINT8 BlueY; //Blue-y Bits 9 - 2\r |
43 | UINT8 WhiteX; //White-x Bits 9 - 2\r |
44 | UINT8 WhiteY; //White-x Bits 9 - 2\r |
45 | UINT8 EstablishedTimings[3];\r |
46 | UINT8 StandardTimingIdentification[16];\r |
47 | UINT8 DetailedTimingDescriptions[72];\r |
48 | UINT8 ExtensionFlag; //Number of (optional) 128-byte EDID extension blocks to follow\r |
49 | UINT8 Checksum;\r |
50 | } EDID_BLOCK;\r |
51 | \r |
52 | #define EDID_BLOCK_SIZE 128\r |
53 | #define VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER 17\r |
54 | \r |
55 | typedef struct {\r |
56 | UINT16 HorizontalResolution;\r |
57 | UINT16 VerticalResolution;\r |
58 | UINT16 RefreshRate;\r |
59 | } EDID_TIMING;\r |
60 | \r |
61 | typedef struct {\r |
62 | UINT32 ValidNumber;\r |
63 | UINT32 Key[VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER];\r |
64 | } VALID_EDID_TIMING;\r |
65 | \r |
66 | //\r |
67 | // Standard timing defined by VESA EDID\r |
68 | //\r |
69 | EDID_TIMING mVbeEstablishedEdidTiming[] = {\r |
70 | //\r |
71 | // Established Timing I\r |
72 | //\r |
73 | {800, 600, 60},\r |
74 | {800, 600, 56},\r |
75 | {640, 480, 75},\r |
76 | {640, 480, 72},\r |
77 | {640, 480, 67},\r |
78 | {640, 480, 60},\r |
79 | {720, 400, 88},\r |
80 | {720, 400, 70},\r |
81 | //\r |
82 | // Established Timing II\r |
83 | //\r |
84 | {1280, 1024, 75},\r |
85 | {1024, 768, 75},\r |
86 | {1024, 768, 70},\r |
87 | {1024, 768, 60},\r |
88 | {1024, 768, 87},\r |
89 | {832, 624, 75},\r |
90 | {800, 600, 75},\r |
91 | {800, 600, 72},\r |
92 | //\r |
93 | // Established Timing III\r |
94 | //\r |
95 | {1152, 870, 75}\r |
96 | };\r |
97 | \r |
98 | /**\r |
99 | Read EDID information from I2C Bus on CirrusLogic.\r |
100 | \r |
101 | @param Private Pointer to CIRRUS_LOGIC_5430_PRIVATE_DATA.\r |
102 | @param EdidDataBlock Pointer to EDID data block.\r |
103 | @param EdidSize Returned EDID block size.\r |
104 | \r |
105 | @retval EFI_UNSUPPORTED\r |
106 | @retval EFI_SUCCESS\r |
107 | \r |
108 | **/\r |
31f9e631 |
109 | EFI_STATUS\r |
110 | ReadEdidData (\r |
111 | CIRRUS_LOGIC_5430_PRIVATE_DATA *Private,\r |
112 | UINT8 **EdidDataBlock,\r |
113 | UINTN *EdidSize\r |
114 | )\r |
115 | {\r |
6f716497 |
116 | UINTN Index;\r |
31f9e631 |
117 | UINT8 EdidData[EDID_BLOCK_SIZE * 2];\r |
118 | UINT8 *ValidEdid;\r |
119 | UINT64 Signature;\r |
120 | \r |
121 | for (Index = 0; Index < EDID_BLOCK_SIZE * 2; Index ++) {\r |
fe186365 |
122 | I2cReadByte (Private->PciIo, 0xa0, (UINT8)Index, &EdidData[Index]);\r |
31f9e631 |
123 | }\r |
124 | \r |
125 | //\r |
126 | // Search for the EDID signature\r |
127 | //\r |
128 | ValidEdid = &EdidData[0];\r |
129 | Signature = 0x00ffffffffffff00ull;\r |
130 | for (Index = 0; Index < EDID_BLOCK_SIZE * 2; Index ++, ValidEdid ++) {\r |
131 | if (CompareMem (ValidEdid, &Signature, 8) == 0) {\r |
132 | break;\r |
133 | }\r |
134 | }\r |
135 | \r |
136 | if (Index == 256) {\r |
137 | //\r |
138 | // No EDID signature found\r |
139 | //\r |
140 | return EFI_UNSUPPORTED;\r |
141 | }\r |
142 | \r |
143 | *EdidDataBlock = AllocateCopyPool (\r |
144 | sizeof (EDID_BLOCK_SIZE),\r |
145 | ValidEdid\r |
146 | );\r |
147 | if (*EdidDataBlock == NULL) {\r |
148 | return EFI_OUT_OF_RESOURCES;\r |
149 | }\r |
150 | \r |
151 | //\r |
152 | // Currently only support EDID 1.x\r |
153 | //\r |
154 | *EdidSize = EDID_BLOCK_SIZE;\r |
155 | \r |
156 | return EFI_SUCCESS;\r |
157 | }\r |
158 | \r |
159 | /**\r |
160 | Generate a search key for a specified timing data.\r |
161 | \r |
162 | @param EdidTiming Pointer to EDID timing\r |
163 | \r |
164 | @return The 32 bit unique key for search.\r |
165 | \r |
166 | **/\r |
31f9e631 |
167 | UINT32\r |
168 | CalculateEdidKey (\r |
169 | EDID_TIMING *EdidTiming\r |
170 | )\r |
171 | {\r |
172 | UINT32 Key;\r |
173 | \r |
174 | //\r |
175 | // Be sure no conflicts for all standard timing defined by VESA.\r |
176 | //\r |
177 | Key = (EdidTiming->HorizontalResolution * 2) + EdidTiming->VerticalResolution;\r |
178 | return Key;\r |
179 | }\r |
180 | \r |
181 | /**\r |
182 | Search a specified Timing in all the valid EDID timings.\r |
183 | \r |
184 | @param ValidEdidTiming All valid EDID timing information.\r |
185 | @param EdidTiming The Timing to search for.\r |
186 | \r |
187 | @retval TRUE Found.\r |
188 | @retval FALSE Not found.\r |
189 | \r |
190 | **/\r |
31f9e631 |
191 | BOOLEAN\r |
192 | SearchEdidTiming (\r |
193 | VALID_EDID_TIMING *ValidEdidTiming,\r |
194 | EDID_TIMING *EdidTiming\r |
195 | )\r |
196 | {\r |
197 | UINT32 Index;\r |
198 | UINT32 Key;\r |
199 | \r |
200 | Key = CalculateEdidKey (EdidTiming);\r |
201 | \r |
202 | for (Index = 0; Index < ValidEdidTiming->ValidNumber; Index ++) {\r |
203 | if (Key == ValidEdidTiming->Key[Index]) {\r |
204 | return TRUE;\r |
205 | }\r |
206 | }\r |
207 | \r |
208 | return FALSE;\r |
209 | }\r |
210 | \r |
211 | /**\r |
212 | Parse the Established Timing and Standard Timing in EDID data block.\r |
213 | \r |
214 | @param EdidBuffer Pointer to EDID data block\r |
215 | @param ValidEdidTiming Valid EDID timing information\r |
216 | \r |
217 | @retval TRUE The EDID data is valid.\r |
218 | @retval FALSE The EDID data is invalid.\r |
219 | \r |
220 | **/\r |
31f9e631 |
221 | BOOLEAN\r |
222 | ParseEdidData (\r |
223 | UINT8 *EdidBuffer,\r |
224 | VALID_EDID_TIMING *ValidEdidTiming\r |
225 | )\r |
226 | {\r |
227 | UINT8 CheckSum;\r |
228 | UINT32 Index;\r |
229 | UINT32 ValidNumber;\r |
230 | UINT32 TimingBits;\r |
231 | UINT8 *BufferIndex;\r |
232 | UINT16 HorizontalResolution;\r |
233 | UINT16 VerticalResolution;\r |
234 | UINT8 AspectRatio;\r |
235 | UINT8 RefreshRate;\r |
236 | EDID_TIMING TempTiming;\r |
237 | EDID_BLOCK *EdidDataBlock;\r |
238 | \r |
239 | EdidDataBlock = (EDID_BLOCK *) EdidBuffer;\r |
240 | \r |
241 | //\r |
242 | // Check the checksum of EDID data\r |
243 | //\r |
244 | CheckSum = 0;\r |
245 | for (Index = 0; Index < EDID_BLOCK_SIZE; Index ++) {\r |
246 | CheckSum = (UINT8) (CheckSum + EdidBuffer[Index]);\r |
247 | }\r |
248 | if (CheckSum != 0) {\r |
249 | return FALSE;\r |
250 | }\r |
251 | \r |
252 | ValidNumber = 0;\r |
253 | SetMem (ValidEdidTiming, sizeof (VALID_EDID_TIMING), 0);\r |
254 | \r |
255 | if ((EdidDataBlock->EstablishedTimings[0] != 0) ||\r |
256 | (EdidDataBlock->EstablishedTimings[1] != 0) ||\r |
257 | (EdidDataBlock->EstablishedTimings[2] != 0)\r |
258 | ) {\r |
259 | //\r |
260 | // Established timing data\r |
261 | //\r |
262 | TimingBits = EdidDataBlock->EstablishedTimings[0] |\r |
263 | (EdidDataBlock->EstablishedTimings[1] << 8) |\r |
264 | ((EdidDataBlock->EstablishedTimings[2] & 0x80) << 9) ;\r |
265 | for (Index = 0; Index < VBE_EDID_ESTABLISHED_TIMING_MAX_NUMBER; Index ++) {\r |
266 | if (TimingBits & 0x1) {\r |
267 | ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&mVbeEstablishedEdidTiming[Index]);\r |
268 | ValidNumber ++;\r |
269 | }\r |
270 | TimingBits = TimingBits >> 1;\r |
271 | }\r |
272 | } else {\r |
273 | //\r |
274 | // If no Established timing data, read the standard timing data\r |
275 | //\r |
276 | BufferIndex = &EdidDataBlock->StandardTimingIdentification[0];\r |
277 | for (Index = 0; Index < 8; Index ++) {\r |
278 | if ((BufferIndex[0] != 0x1) && (BufferIndex[1] != 0x1)){\r |
279 | //\r |
280 | // A valid Standard Timing\r |
281 | //\r |
282 | HorizontalResolution = (UINT16) (BufferIndex[0] * 8 + 248);\r |
283 | AspectRatio = (UINT8) (BufferIndex[1] >> 6);\r |
284 | switch (AspectRatio) {\r |
285 | case 0:\r |
286 | VerticalResolution = (UINT16) (HorizontalResolution / 16 * 10);\r |
287 | break;\r |
288 | case 1:\r |
289 | VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);\r |
290 | break;\r |
291 | case 2:\r |
292 | VerticalResolution = (UINT16) (HorizontalResolution / 5 * 4);\r |
293 | break;\r |
294 | case 3:\r |
295 | VerticalResolution = (UINT16) (HorizontalResolution / 16 * 9);\r |
296 | break;\r |
297 | default:\r |
298 | VerticalResolution = (UINT16) (HorizontalResolution / 4 * 3);\r |
299 | break;\r |
300 | }\r |
301 | RefreshRate = (UINT8) ((BufferIndex[1] & 0x1f) + 60);\r |
302 | TempTiming.HorizontalResolution = HorizontalResolution;\r |
303 | TempTiming.VerticalResolution = VerticalResolution;\r |
304 | TempTiming.RefreshRate = RefreshRate;\r |
305 | ValidEdidTiming->Key[ValidNumber] = CalculateEdidKey (&TempTiming);\r |
306 | ValidNumber ++;\r |
307 | }\r |
308 | BufferIndex += 2;\r |
309 | }\r |
310 | }\r |
311 | \r |
312 | ValidEdidTiming->ValidNumber = ValidNumber;\r |
313 | return TRUE;\r |
314 | }\r |
315 | \r |
316 | /**\r |
317 | Construct the valid video modes for CirrusLogic5430.\r |
318 | \r |
319 | **/\r |
320 | EFI_STATUS\r |
321 | CirrusLogic5430VideoModeSetup (\r |
322 | CIRRUS_LOGIC_5430_PRIVATE_DATA *Private\r |
323 | )\r |
324 | {\r |
325 | EFI_STATUS Status;\r |
326 | UINT32 Index;\r |
327 | BOOLEAN EdidFound;\r |
328 | EFI_EDID_OVERRIDE_PROTOCOL *EdidOverride;\r |
329 | UINT32 EdidAttributes;\r |
330 | BOOLEAN EdidOverrideFound;\r |
331 | UINTN EdidOverrideDataSize;\r |
332 | UINT8 *EdidOverrideDataBlock;\r |
333 | UINTN EdidDiscoveredDataSize;\r |
334 | UINT8 *EdidDiscoveredDataBlock;\r |
335 | UINTN EdidActiveDataSize;\r |
336 | UINT8 *EdidActiveDataBlock;\r |
337 | VALID_EDID_TIMING ValidEdidTiming;\r |
338 | UINT32 ValidModeCount;\r |
339 | CIRRUS_LOGIC_5430_MODE_DATA *ModeData;\r |
340 | BOOLEAN TimingMatch;\r |
341 | CIRRUS_LOGIC_5430_VIDEO_MODES *VideoMode;\r |
342 | EDID_TIMING TempTiming;\r |
343 | \r |
344 | //\r |
345 | // setup EDID information\r |
346 | //\r |
347 | Private->EdidDiscovered.Edid = NULL;\r |
348 | Private->EdidDiscovered.SizeOfEdid = 0;\r |
349 | Private->EdidActive.Edid = NULL;\r |
350 | Private->EdidActive.SizeOfEdid = 0;\r |
351 | \r |
352 | EdidFound = FALSE;\r |
353 | EdidOverrideFound = FALSE;\r |
354 | EdidAttributes = 0xff;\r |
355 | EdidOverrideDataSize = 0;\r |
356 | EdidOverrideDataBlock = NULL;\r |
357 | EdidActiveDataSize = 0;\r |
358 | EdidActiveDataBlock = NULL;\r |
359 | EdidDiscoveredDataBlock = NULL;\r |
360 | \r |
361 | //\r |
362 | // Find EDID Override protocol firstly, this protocol is installed by platform if needed.\r |
363 | //\r |
364 | Status = gBS->LocateProtocol (\r |
365 | &gEfiEdidOverrideProtocolGuid,\r |
366 | NULL,\r |
367 | (VOID **) &EdidOverride\r |
368 | );\r |
369 | if (!EFI_ERROR (Status)) {\r |
370 | //\r |
371 | // Allocate double size of VESA_BIOS_EXTENSIONS_EDID_BLOCK_SIZE to avoid overflow\r |
372 | //\r |
373 | EdidOverrideDataBlock = AllocatePool (sizeof (EDID_BLOCK_SIZE * 2));\r |
374 | if (NULL == EdidOverrideDataBlock) {\r |
375 | Status = EFI_OUT_OF_RESOURCES;\r |
376 | goto Done;\r |
377 | }\r |
378 | \r |
379 | Status = EdidOverride->GetEdid (\r |
380 | EdidOverride,\r |
381 | Private->Handle,\r |
382 | &EdidAttributes,\r |
383 | &EdidOverrideDataSize,\r |
384 | (UINT8 **) &EdidOverrideDataBlock\r |
385 | );\r |
386 | if (!EFI_ERROR (Status) &&\r |
387 | EdidAttributes == 0 &&\r |
388 | EdidOverrideDataSize != 0) {\r |
389 | //\r |
390 | // Succeeded to get EDID Override Data\r |
391 | //\r |
392 | EdidOverrideFound = TRUE;\r |
393 | }\r |
394 | }\r |
395 | \r |
396 | if (EdidOverrideFound != TRUE || EdidAttributes == EFI_EDID_OVERRIDE_DONT_OVERRIDE) {\r |
397 | //\r |
398 | // If EDID Override data doesn't exist or EFI_EDID_OVERRIDE_DONT_OVERRIDE returned,\r |
399 | // read EDID information through I2C Bus\r |
400 | //\r |
6f716497 |
401 | if (ReadEdidData (Private, &EdidDiscoveredDataBlock, &EdidDiscoveredDataSize) == EFI_SUCCESS) {\r |
31f9e631 |
402 | Private->EdidDiscovered.SizeOfEdid = (UINT32) EdidDiscoveredDataSize;\r |
403 | Private->EdidDiscovered.Edid = (UINT8 *) AllocateCopyPool (\r |
404 | EdidDiscoveredDataSize,\r |
405 | EdidDiscoveredDataBlock\r |
406 | );\r |
407 | \r |
408 | if (NULL == Private->EdidDiscovered.Edid) {\r |
409 | Status = EFI_OUT_OF_RESOURCES;\r |
410 | goto Done;\r |
411 | }\r |
412 | \r |
413 | EdidActiveDataSize = Private->EdidDiscovered.SizeOfEdid;\r |
414 | EdidActiveDataBlock = Private->EdidDiscovered.Edid;\r |
415 | \r |
416 | EdidFound = TRUE;\r |
417 | }\r |
418 | }\r |
419 | \r |
420 | if (EdidFound != TRUE && EdidOverrideFound == TRUE) {\r |
421 | EdidActiveDataSize = EdidOverrideDataSize;\r |
422 | EdidActiveDataBlock = EdidOverrideDataBlock;\r |
423 | EdidFound = TRUE;\r |
424 | }\r |
425 | \r |
426 | if (EdidFound == TRUE) {\r |
427 | //\r |
428 | // Parse EDID data structure to retrieve modes supported by monitor\r |
429 | //\r |
430 | if (ParseEdidData ((UINT8 *) EdidActiveDataBlock, &ValidEdidTiming) == TRUE) {\r |
431 | //\r |
432 | // Copy EDID Override Data to EDID Active Data\r |
433 | //\r |
434 | Private->EdidActive.SizeOfEdid = (UINT32) EdidActiveDataSize;\r |
435 | Private->EdidActive.Edid = (UINT8 *) AllocateCopyPool (\r |
436 | EdidActiveDataSize,\r |
437 | EdidActiveDataBlock\r |
438 | );\r |
439 | if (NULL == Private->EdidActive.Edid) {\r |
440 | Status = EFI_OUT_OF_RESOURCES;\r |
441 | goto Done;\r |
442 | }\r |
443 | }\r |
444 | } else {\r |
445 | Private->EdidActive.SizeOfEdid = 0;\r |
446 | Private->EdidActive.Edid = NULL;\r |
447 | EdidFound = FALSE;\r |
448 | }\r |
449 | \r |
450 | if (EdidFound) {\r |
451 | //\r |
452 | // Initialize the private mode data with the supported modes.\r |
453 | //\r |
454 | ValidModeCount = 0;\r |
455 | ModeData = &Private->ModeData[0];\r |
456 | VideoMode = &CirrusLogic5430VideoModes[0];\r |
457 | for (Index = 0; Index < CIRRUS_LOGIC_5430_MODE_COUNT; Index++) {\r |
458 | \r |
459 | TimingMatch = TRUE;\r |
460 | \r |
461 | //\r |
462 | // Check whether match with CirrusLogic5430 video mode\r |
463 | //\r |
464 | TempTiming.HorizontalResolution = (UINT16) VideoMode->Width;\r |
465 | TempTiming.VerticalResolution = (UINT16) VideoMode->Height;\r |
466 | TempTiming.RefreshRate = (UINT16) VideoMode->RefreshRate;\r |
467 | if (SearchEdidTiming (&ValidEdidTiming, &TempTiming) != TRUE) {\r |
468 | TimingMatch = FALSE;\r |
469 | }\r |
470 | \r |
471 | //\r |
472 | // Not export Mode 0x0 as GOP mode, this is not defined in spec.\r |
473 | //\r |
474 | if ((VideoMode->Width == 0) || (VideoMode->Height == 0)) {\r |
475 | TimingMatch = FALSE;\r |
476 | }\r |
477 | \r |
478 | if (TimingMatch) {\r |
479 | ModeData->ModeNumber = Index;\r |
480 | ModeData->HorizontalResolution = VideoMode->Width;\r |
481 | ModeData->VerticalResolution = VideoMode->Height;\r |
482 | ModeData->ColorDepth = VideoMode->ColorDepth;\r |
483 | ModeData->RefreshRate = VideoMode->RefreshRate;\r |
484 | \r |
485 | ModeData ++;\r |
486 | ValidModeCount ++;\r |
487 | }\r |
488 | \r |
489 | VideoMode ++;\r |
490 | }\r |
491 | \r |
492 | Private->MaxMode = ValidModeCount;\r |
493 | \r |
494 | } else {\r |
495 | //\r |
496 | // If EDID information wasn't found\r |
497 | //\r |
498 | ModeData = &Private->ModeData[0];\r |
499 | VideoMode = &CirrusLogic5430VideoModes[0];\r |
500 | for (Index = 0; Index < CIRRUS_LOGIC_5430_MODE_COUNT; Index ++) {\r |
501 | ModeData->ModeNumber = Index;\r |
502 | ModeData->HorizontalResolution = VideoMode->Width;\r |
503 | ModeData->VerticalResolution = VideoMode->Height;\r |
504 | ModeData->ColorDepth = VideoMode->ColorDepth;\r |
505 | ModeData->RefreshRate = VideoMode->RefreshRate;\r |
506 | \r |
507 | ModeData ++ ;\r |
508 | VideoMode ++;\r |
509 | }\r |
510 | Private->MaxMode = CIRRUS_LOGIC_5430_MODE_COUNT;\r |
511 | }\r |
512 | \r |
6f716497 |
513 | if (EdidOverrideDataBlock != NULL) {\r |
514 | FreePool (EdidOverrideDataBlock);\r |
515 | }\r |
516 | \r |
31f9e631 |
517 | return EFI_SUCCESS;\r |
518 | \r |
519 | Done:\r |
520 | if (EdidOverrideDataBlock != NULL) {\r |
521 | FreePool (EdidOverrideDataBlock);\r |
522 | }\r |
523 | if (Private->EdidDiscovered.Edid != NULL) {\r |
524 | FreePool (Private->EdidDiscovered.Edid);\r |
525 | }\r |
526 | if (Private->EdidDiscovered.Edid != NULL) {\r |
527 | FreePool (Private->EdidActive.Edid);\r |
528 | }\r |
529 | \r |
530 | return EFI_DEVICE_ERROR;\r |
531 | }\r |