Automatically detect and set correct panel cmdline

This script will find the value given by the kernel with get_panel_maker_id

	LCD_RENESAS_LGD = 0,
	LCD_RENESAS_JDI = 1

The lcd_maker_id value is generated from the panel hardware, is always accurate and will always set the correct cmdline of your panel

This script can also simply be copy pasted for a kernel zip in loki.sh before the loki function. It has no other requirements besides the script itself since it directly searches and modifies the boot.img and doesn't require the boot.img to be unpacked.

Do not shorten the search function as we need to ensure only the cmdline is being changed and nothing in the actual kernel source.

Continue building the kernel with either the full lgd or jdi cmdline, the script will change the panel as needed.

Currently the script looks for the extracted boot.img in /tmp and /tmp/loki

Signed-off-by: dr87 <nb00870@gmail.com>

releasetools/loki.sh

@@ -1,10 +1,50 @@
 #!/sbin/sh
 #
-# This leverages the loki_patch utility created by djrbliss which allows us
-# to bypass the bootloader checks on jfltevzw and jflteatt
+# This leverages the loki_patch utility created by djrbliss
 # See here for more information on loki: https://github.com/djrbliss/loki
 #
 
+
+# 4.4 Kernel - Panel Detection - dr87
+#
+# Detect panel and swap as necessary 
+# lcd_maker_id is determined by get_panel_maker_id on the hardware and is always accurate
+# This searches directly in the boot.img and has no other requirements
+# Do not shorten the search or you may change the actual kernel source
+#
+#	LCD_RENESAS_LGD = 0,
+#	LCD_RENESAS_JDI = 1
+
+# Search the two common locations to extract boot.img for loki
+# 
+# Search for boot.img in /tmp/loki
+
+lcdmaker=$(grep -c "lcd_maker_id=1" /proc/cmdline)
+if [ $lcdmaker == 1 ]; then
+	echo "JDI panel detected"
+	find /tmp/loki/boot.img -type f -exec sed -i 's/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_lgd_cmd/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_jdi_cmd/g' {} \;
+elif [ $lcdmaker == "0" ]; then
+	echo "LGD panel detected"
+	find /tmp/loki/boot.img -type f -exec sed -i 's/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_jdi_cmd/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_lgd_cmd/g' {} \;
+else
+	echo "lcd_maker_id doesn't exist. Something went wrong."
+fi
+
+# Search for boot.img in /tmp
+
+lcdmaker=$(grep -c "lcd_maker_id=1" /proc/cmdline)
+if [ $lcdmaker == 1 ]; then
+	echo "JDI panel detected"
+	find /tmp/boot.img -type f -exec sed -i 's/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_lgd_cmd/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_jdi_cmd/g' {} \;
+elif [ $lcdmaker == "0" ]; then
+	echo "LGD panel detected"
+	find /tmp/boot.img -type f -exec sed -i 's/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_jdi_cmd/console=ttyHSL0,115200,n8 androidboot.hardware=g2 user_debug=31 msm_rtb.filter=0x0 mdss_mdp.panel=1:dsi:0:qcom,mdss_dsi_g2_lgd_cmd/g' {} \;
+else
+	echo "lcd_maker_id doesn't exist. Something went wrong."
+fi
+
+# Loki
+
 export C=/tmp/loki_tmpdir
 
 mkdir -p $C