From b9851bd27af060d9215fd33e85156a66ffd53adf Mon Sep 17 00:00:00 2001
From: Ray Zhang <rayz@codeaurora.org>
Date: Fri, 13 Nov 2015 12:37:31 +0530
Subject: [PATCH] init: early_boot: Use virtual_size to set lcd_density

Calculating density depending on FB resolution is more accurate
than depending on platform or target ID, since in some cases there
might be multiple panels supported on a single target or a single
target can have multiple hwplatform variants

Change-Id: Ibf238b269d3c64ffc06d798998dcd68343977003
---
 rootdir/etc/init.qcom.early_boot.sh | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/rootdir/etc/init.qcom.early_boot.sh b/rootdir/etc/init.qcom.early_boot.sh
index ce2af5e4..bd94503f 100755
--- a/rootdir/etc/init.qcom.early_boot.sh
+++ b/rootdir/etc/init.qcom.early_boot.sh
@@ -45,6 +45,11 @@ else
     soc_hwver=`cat /sys/devices/system/soc/soc0/platform_version` 2> /dev/null
 fi
 
+if [ -f /sys/class/graphics/fb0/virtual_size ]; then
+    res=`cat /sys/class/graphics/fb0/virtual_size` 2> /dev/null
+    fb_width=${res%,*}
+fi
+
 log -t BOOT -p i "MSM target '$1', SoC '$soc_hwplatform', HwID '$soc_hwid', SoC ver '$soc_hwver'"
 
 target=`getprop ro.board.platform`
@@ -178,6 +183,20 @@ case "$target" in
                 ;;
         esac
         ;;
+     *)
+         if [ -z $fb_width ]; then
+             setprop ro.sf.lcd_density 320
+         else
+             if [ $fb_width -ge 1080 ]; then
+                 setprop ro.sf.lcd_density 480
+             elif [ $fb_width -ge 720 ]; then
+                 setprop ro.sf.lcd_density 320 #for 720X1280 resolution
+             elif [ $fb_width -ge 480 ]; then
+                 setprop ro.sf.lcd_density 240 #for 480X854 QRD resolution
+             else
+                 setprop ro.sf.lcd_density 160
+             fi
+        fi
 esac
 
 # Setup display nodes & permissions