71 lines
2.7 KiB
Plaintext
71 lines
2.7 KiB
Plaintext
/** @file
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ACPI DSDT table - Discrete DP Mux Switch
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@copyright
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INTEL CONFIDENTIAL
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Copyright 2021 Intel Corporation.
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The source code contained or described herein and all documents related to the
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source code ("Material") are owned by Intel Corporation or its suppliers or
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licensors. Title to the Material remains with Intel Corporation or its suppliers
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and licensors. The Material may contain trade secrets and proprietary and
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confidential information of Intel Corporation and its suppliers and licensors,
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and is protected by worldwide copyright and trade secret laws and treaty
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provisions. No part of the Material may be used, copied, reproduced, modified,
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published, uploaded, posted, transmitted, distributed, or disclosed in any way
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without Intel's prior express written permission.
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No license under any patent, copyright, trade secret or other intellectual
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property right is granted to or conferred upon you by disclosure or delivery
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of the Materials, either expressly, by implication, inducement, estoppel or
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otherwise. Any license under such intellectual property rights must be
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express and approved by Intel in writing.
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Unless otherwise agreed by Intel in writing, you may not remove or alter
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this notice or any other notice embedded in Materials by Intel or
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Intel's suppliers or licensors in any way.
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This file contains a 'Sample Driver' and is licensed as such under the terms
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of your license agreement with Intel or your vendor. This file may be modified
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by the user, subject to the additional terms of the license agreement.
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@par Specification Reference:
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**/
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External (\_SB.PC00.GFX0.IPCO, MethodObj)
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External (\_SB.SGOV, MethodObj)
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External (\_SB.GGOV, MethodObj)
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External (\DPIW) // Discrete DpIn Connection Policy Setup option
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External (\DPG1) // PcdDpMuxGpio
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#define DP_ACTIVATE 1 // DP_ACTIVATE = 1 - External
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// DP_ACTIVATE = 0 - Internal
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#define DYNAMIC_SWITCH_ENABLE 2 // Runtime Switch
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//
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// Discrete Display Mux Switch (while Booting to OS, once per boot only)
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// It is a feature allows an internal or external Gfx to tunnel its display
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// via discrete TBT/USB4 port(TypeC connector) based on platform preferences
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//
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// Switching mux to dGfx source by _OSC which indicates booting to OS successfully
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// _OSC UUID - 0811B06E-4A27-44F9-8D60-3CBBC22E7B48
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//
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Method (DDMS)
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{
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//
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// Discrete DP Mux Switch - Runtime
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//
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//
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// Report Discrete Runtime Switch Supportivity
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//
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If (LAnd (CondRefOf (\DPIW), LAnd (\DPIW, DYNAMIC_SWITCH_ENABLE))) {
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If (\_SB.PC00.GFX0.IPCO ()) {
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If (CondRefOf (\DPG1)) {
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\_SB.SGOV (\DPG1, DP_ACTIVATE)
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} Else {
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}
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} Else {
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}
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} Else {
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}
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}
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