alder_lake_bios/Intel/AlderLake/AlderLakeChipsetPkg/HybridGraphicsAcpi/AmdDiscrete/AmdDgpu2.asl

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/** @file
;******************************************************************************
;* Copyright (c) 2018 - 2019, Insyde Software Corp. All Rights Reserved.
;*
;* You may not reproduce, distribute, publish, display, perform, modify, adapt,
;* transmit, broadcast, present, recite, release, license or otherwise exploit
;* any part of this publication in any form, by any means, without the prior
;* written permission of Insyde Software Corporation.
;*
;******************************************************************************
*/
Scope (DGPU2_BRIDGE_SCOPE)
{
//
// Get bus number for this DGPU
//
OperationRegion (PE19, PCI_Config, 0x19, 0x1)
Field (PE19, ByteAcc, NoLock, Preserve) {
PSBN, 8
}
Device (DGPU2_DEVICE)
{
Name (_ADR, 0x00000000)
Name (_PRW, Package() {0x09, 4}) // can wakeup from S4 state
Method (_INI)
{
Store (Zero, IGDS) // Integated Graphics Device Disabled
}
Method (GBUS, 0x0)
{
Return (^^PSBN) // Return DGPU bus number.
}
} // end of Device (DGPU)
}