From 46a569b9d6e6cd2533514f7753d228e04915ff1d Mon Sep 17 00:00:00 2001
From: Visual Ehrmanntraut
 <30368284+VisualEhrmanntraut@users.noreply.github.com>
Date: Mon, 19 Aug 2024 20:08:43 +0300
Subject: [PATCH] fix(fb): fix pwm value calculation

[why]
the brightness turns off on raven as soon as it's turned down
[how]
calculate pwm value correctly (0xff * 0x101) as in linux
---
 NootedRed/X6000FB.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/NootedRed/X6000FB.cpp b/NootedRed/X6000FB.cpp
index 8c7ef89f..58e8a1f9 100644
--- a/NootedRed/X6000FB.cpp
+++ b/NootedRed/X6000FB.cpp
@@ -332,7 +332,7 @@ IOReturn X6000FB::wrapSetAttributeForConnection(IOService *framebuffer, IOIndex
             return kIOReturnSuccess;
         }
     } else {
-        UInt32 pwmValue = percentage >= 100 ? 0x1FF00 : ((percentage * 0xFF) / 100) << 8U;
+        UInt32 pwmValue = (percentage * 0xFFFF) / 100;
         DBGLOG("X6000FB", "setAttributeForConnection: New PWM brightness: 0x%X", pwmValue);
 
         if (callback->orgDcLinkSetBacklightLevel(callback->embeddedPanelLink, pwmValue, 0)) { return kIOReturnSuccess; }