From 843c0ec80afa8d942563d14871ace27ff34edd11 Mon Sep 17 00:00:00 2001
From: Pierre-Hugues Husson <phh@phh.me>
Date: Sun, 6 Dec 2020 00:58:01 +0100
Subject: [PATCH] Add persist.sys.phh.backlight.scale to control brightness
 scale from treble app

---
 phh-prop-handler.sh | 17 +++++++++++++++++
 vndk.rc             |  3 +++
 2 files changed, 20 insertions(+)

diff --git a/phh-prop-handler.sh b/phh-prop-handler.sh
index 722b569..42b40c9 100644
--- a/phh-prop-handler.sh
+++ b/phh-prop-handler.sh
@@ -143,3 +143,20 @@ if [ "$1" == "persist.sys.phh.vsmart.dt2w" ];then
     fi
     exit
 fi
+
+if [ "$1" == "persist.sys.phh.backlight.scale" ];then
+    if [[ "$prop_value" != "0" && "$prop_value" != "1" ]]; then
+        exit 1
+    fi
+
+    if [[ "$prop_value" == 1 ]];then
+        if [ -f /sys/class/leds/lcd-backlight/max_brightness ];then
+            setprop persist.sys.qcom-brightness "$(cat /sys/class/leds/lcd-backlight/max_brightness)"
+        elif [ -f /sys/class/backlight/panel0-backlight/max_brightness ];then
+            setprop persist.sys.qcom-brightness "$(cat /sys/class/backlight/panel0-backlight/max_brightness)"
+        fi
+    else
+        setprop persist.sys.qcom-brightness -1
+    fi
+    exit
+fi
diff --git a/vndk.rc b/vndk.rc
index 334a492..001e8dd 100644
--- a/vndk.rc
+++ b/vndk.rc
@@ -44,6 +44,9 @@ on property:persist.sys.phh.caf.audio_policy=*
 on property:persist.sys.phh.vsmart.dt2w=*
     exec u:r:phhsu_daemon:s0 root -- /system/bin/phh-prop-handler.sh "persist.sys.phh.vsmart.dt2w"
 
+on property:persist.sys.phh.backlight.scale=*
+    exec u:r:phhsu_daemon:s0 root -- /system/bin/phh-prop-handler.sh "persist.sys.phh.backlight.scale"
+
 on property:ro.sf.lcd_density=*
     restart surfaceflinger