From 27c44326e734ae95b1d5bed0e9e1bb371df98844 Mon Sep 17 00:00:00 2001
From: Blazer <breakingspell@gmail.com>
Date: Thu, 9 May 2024 22:10:03 -0500
Subject: [PATCH] Dynamic brightness control path for RPi 7" Display

---
 plugins/brightness/official_rpi/official_rpi.cpp | 11 ++++++++++-
 plugins/brightness/official_rpi/official_rpi.hpp |  2 +-
 2 files changed, 11 insertions(+), 2 deletions(-)

diff --git a/plugins/brightness/official_rpi/official_rpi.cpp b/plugins/brightness/official_rpi/official_rpi.cpp
index a4eaa8b7..1cb9c649 100644
--- a/plugins/brightness/official_rpi/official_rpi.cpp
+++ b/plugins/brightness/official_rpi/official_rpi.cpp
@@ -4,7 +4,16 @@
 
 OfficialRPi::OfficialRPi() : brightness_attribute(this->PATH)
 {
-    this->brightness_attribute.open(QIODevice::WriteOnly);
+    QString fkms_path = "/sys/class/backlight/rpi_backlight/brightness";
+    QString kms_path = "/sys/class/backlight/10-0045/brightness";
+ 
+    if (QFileInfo(kms_path).exists()) {
+        PATH = kms_path;
+    } else {
+        PATH = fkms_path;
+    }
+    brightness_attribute.setFileName(PATH);
+    brightness_attribute.open(QIODevice::WriteOnly);
 }
 
 OfficialRPi::~OfficialRPi()
diff --git a/plugins/brightness/official_rpi/official_rpi.hpp b/plugins/brightness/official_rpi/official_rpi.hpp
index 5344a94b..762aa600 100644
--- a/plugins/brightness/official_rpi/official_rpi.hpp
+++ b/plugins/brightness/official_rpi/official_rpi.hpp
@@ -19,7 +19,7 @@ class OfficialRPi : public QObject, BrightnessPlugin {
     void set(int brightness) override;
 
    private:
-    const QString PATH = "/sys/class/backlight/rpi_backlight/brightness";
+    QString PATH;
 
     QFile brightness_attribute;
 };