Kernel space driver for Silead touch screen digitizers. Forked from Robert Dolca's driver originally posted to lkml.
First you should get your kernel headers and build dependencies. Assuming debian based operating systems like Ubuntu
sudo apt-get install kernel-headers-$(uname -r)
sudo apt-get build-dep linux-image-$(uname -r)
Then you can simply fetch this repository and compile it using
sudo apt-get install -y git
git clone https://github.com/sigboe/gslX68X.git && cd gslX68X
make
You will need to place a firmware file at /lib/firmware/[hid].fw where you replace [hid] with the lower case hardware ID of your device.
In most cases, this is mssl1680 or the exact part name such as gsl1680, gsl1688, gsl3670, gsl3675 or gsl3692.
If mssl1680.fw does not work, watch the dmesg output for a message similar to this one:
[ 5.124400] silead_ts i2c-MSSL1680:00: Direct firmware load for mssl1680.fw failed with error -2
This inidicates that the firmware should be named mssl1680.fw.
Firmware for some devices can be obtained from gsl-firmware.
You can also find conversion tools there to create your own firmware image from Windows or Android drivers.
Note that silead.ko requires firmware in 'plain' format.
You can start using the driver by sudo insmod silead.ko in the working directory where you compiled the driver.
In most cases, some calibration is required before the driver produces accurate results. Use xinput_calibrator for this purpose.
To install the driver permanently, type sudo make install. This will copy the silead.ko to /lib/modules/<kernel version>/kernel/drivers/input/touchscreen. You may have to run sudo update-initramfs -k all -u or similar afterwards to update the initial ramdisk.