#!/bin/bash

# Check is LCD is enabled in the device tree
LCD=$(grep -r "lcd-olinuxino-[147]" /proc/device-tree -a -h | tr -d '\0')
[[ -z $LCD ]] && exit 0

overlays=$(cat /boot/uEnv.txt)

# Select transformation matrix
if [[ $overlays == *"i2c2-ar1021"* ]];
then
    case $LCD in
        "olimex,lcd-olinuxino-4.3")
                MATRIX="1.09 0.0 -0.04 0.0 1.17 -0.09 0.0 0.0 1.0"
                ;;
        "olimex,lcd-olinuxino-7")
                MATRIX="1.05 0.0 -0.03 0.0 1.13 -0.08 0.0 0.0 1.0"
                ;;
        "olimex,lcd-olinuxino-10")
                MATRIX="1.04 0.0 -0.03 0.0 1.09 -0.07 0.0 0.0 1.0"
                ;;
        *)
                # The LCD is not supported by this script
                exit 0;
    esac    
    
    PRODUCT="ar1021 I2C Touchscreen"

else
    case $LCD in
        "olimex,lcd-olinuxino-4.3")
                MATRIX="1.08 0.0 -0.04 0.0 1.14 -0.10 0.0 0.0 1.0"
                ;;
        "olimex,lcd-olinuxino-7")
                MATRIX="1.06 0.0 -0.03 0.0 1.11 -0.08 0.0 0.0 1.0"
                ;;
        "olimex,lcd-olinuxino-10")
                MATRIX="1.04 0.0 -0.03 0.0 1.09 -0.07 0.0 0.0 1.0"
                ;;
        *)
                # The LCD is not supported by this script
                exit 0;
    esac
    
    PRODUCT="1c25000.rtp"    
    
fi

# Generate configuration file
mkdir -p /etc/X11/xorg.conf.d
tee > /etc/X11/xorg.conf.d/98-screen-calibration.conf << __EOF__
Section "InputClass"
        Identifier      "calibration"
        MatchProduct    "$PRODUCT"
        Option          "TransformationMatrix" "$MATRIX"
EndSection
__EOF__

# педалщина
LCD=$(grep -r "lcd-olinuxino-[147]" /proc/device-tree -a -h | tr -d '\0')
[[ -z $LCD ]] && exit 0

overlays=$(cat /boot/uEnv.txt)

# Select transformation matrix
if [[ $overlays == *"-gt911inv"* ]];
then
        /usr/bin/memtool mw -l 0x1C0C010  0x80000000 || :
        /usr/bin/memtool mw -l 0x1C0C044  0xF0000006 || :
fi
