Added applbkl aliases to IORegistry (data, 32-bit)

reference acidanthera/bugtracker#581
acidanthera · Nov 20, 2019 · 9a0a169 · 9a0a169
1 parent a502c8b
commit 9a0a169
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Showing 2 changed files with 12 additions and 5 deletions.
diff --git a/Changelog.md b/Changelog.md
@@ -6,6 +6,7 @@ WhateverGreen Changelog
 - Added `-wegtree` boot argument to force device renaming
 - Fixed FairPlay DRM playback patches on 10.15
 - Added `shikigva` and `shiki-id` aliases in IORegistry
+- Added `applbkl` aliases to IORegistry (data, 32-bit)
 
 #### v1.3.4
 - Added support for disabled AppleGraphicsDevicePolicy in AMD drivers on 10.15.1

diff --git a/WhateverGreen/kern_weg.cpp b/WhateverGreen/kern_weg.cpp
@@ -234,11 +234,8 @@ void WEG::processKernel(KernelPatcher &patcher) {
 					resetFramebuffer = FB_COPY;
 			}
 
-			// Note, disabled Optimus will make videoExternal 0, so this case checks for active IGPU only.
-			if (appleBacklightPatch == APPLBKL_DETECT && (devInfo->videoBuiltin == nullptr || extNum > 0)) {
-				// Either a builtin IGPU is not available, or some external GPU is available.
-				kextBacklight.switchOff();
-			}
+			if (appleBacklightPatch == APPLBKL_DETECT && devInfo->videoBuiltin != nullptr)
+				WIOKit::getOSDataValue(devInfo->videoBuiltin, "applbkl", appleBacklightPatch);
 
 			for (size_t i = 0; i < extNum; i++) {
 				auto &v = devInfo->videoExternal[i];
@@ -247,6 +244,15 @@ void WEG::processKernel(KernelPatcher &patcher) {
 				// Assume that AMD GPU is the boot display.
 				if (v.vendor == WIOKit::VendorID::ATIAMD && resetFramebuffer == FB_DETECT)
 					resetFramebuffer = FB_ZEROFILL;
+
+				if (appleBacklightPatch == APPLBKL_DETECT)
+					WIOKit::getOSDataValue(v.video, "applbkl", appleBacklightPatch);
+			}
+
+			// Note, disabled Optimus will make videoExternal 0, so this case checks for active IGPU only.
+			if (appleBacklightPatch == APPLBKL_DETECT && (devInfo->videoBuiltin == nullptr || extNum > 0)) {
+				// Either a builtin IGPU is not available, or some external GPU is available.
+				kextBacklight.switchOff();
 			}
 
 			if ((graphicsDisplayPolicyMod & AGDP_DETECT) && isGraphicsPolicyModRequired(devInfo))