From 6690cc7c7aa396109172b4d8d07bfc6efb01cc41 Mon Sep 17 00:00:00 2001
From: Jeremy Soller <jeremy@system76.com>
Date: Tue, 15 Dec 2020 10:09:48 -0700
Subject: [PATCH] Ensure that GPU SSID is restored

Change-Id: Iada67ff9b7d882167ca2047a1618230e73d4300d
---
 src/mainboard/system76/galp5/acpi/dgpu.asl | 33 +++++++++++++++-------
 1 file changed, 23 insertions(+), 10 deletions(-)

diff --git a/src/mainboard/system76/galp5/acpi/dgpu.asl b/src/mainboard/system76/galp5/acpi/dgpu.asl
index ec2a458218..52d8714bfe 100644
--- a/src/mainboard/system76/galp5/acpi/dgpu.asl
+++ b/src/mainboard/system76/galp5/acpi/dgpu.asl
@@ -1,17 +1,30 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
-#define DGPU_RP \_SB.PCI0.RP01
+Scope (\_SB.PCI0.RP01) {
+    Device (DEV0) {
+        Name(_ADR, 0x00000000)
 
-External (DGPU_RP.RTD3)
+        OperationRegion (PCIC, PCI_Config, 0x00, 0x50)
+        Field (PCIC, DwordAcc, NoLock, Preserve) {
+            Offset (0x40),
+            SSID, 32
+        }
 
-Device (DGPU_RP.DEV0) {
-	Name(_ADR, 0x00000000)
+        Name (_PR0, Package () { PWRR })
+        Name (_PR3, Package () { PWRR })
+        PowerResource (PWRR, 0, 0) {
+            Name (_STA, 1)
 
-	Method (_PS0, 0) {
-		Debug = "GPU _PS0"
-	}
+            Method (_ON) {
+                ^^SSID = 0x40181558
+                Printf("GPU _ON %o", ToHexString(^^SSID))
+                _STA = 1
+            }
 
-	Method (_PS3, 0) {
-		Debug = "GPU _PS3"
-	}
+            Method (_OFF) {
+                Printf("GPU _OFF %o", ToHexString(^^SSID))
+                _STA = 0
+            }
+        }
+    }
 }