HyperTouch 4.0 kernel driver
guide for raspberry pi
sudo apt-get install dkms git
git clone https://github.com/shpi/hypertouch40
cd hypertouch40
sudo ln -s /home/pi/hypertouch40 /usr/src/hypertouch40-1.0
sudo dkms install hypertouch40/1.0
sudo dtc -I dts -O dtb -o /boot/overlays/hypertouch40.dtbo hypertouch40.dts
add following lines to config.txt
sudo nano /boot/config.txt
display_rotate=3
enable_dpi_lcd=1
dpi_group=2
dpi_mode=87
dpi_output_format=0x7f216
dpi_timings=480 0 10 16 59 800 0 15 113 15 0 0 0 60 0 32000000 6
dtoverlay=hypertouch40
dtparam=touchscreen-swapped-x-y
dtparam=touchscreen-inverted-x
echo 31 | sudo tee /sys/class/backlight/soc\:backlight/brightness