This is a workaround—this page needs to be updated to add instructions for multi-touch support.
Based on Freescale BSP 11.05.
The LVDS panel (MCIMX-LVDS1) has a serial multi-touch controller, eGalax. As a workaround to have it supported on directly on Qt, we can force the driver to behave as a single touch. To do this:
1 - Edit the file ltib/rpm/BUILD/linux-18.104.22.168/drivers/input/touchscreen/egalax_ts.c adding the following line:
+ #define FORCE_SINGLE_POINTER_SUPPORT 1
2 - Compile the kernel
./ltib -m scbuild -p kernel
3 - Copy the new kernel to Card/Memory and boot it.
4 - Start your Qt app:
$ Xfbdev -screen 1024x768 -mouse tslib,,device=/dev/input/event0 &
$ export DISPLAY=:0.0
Note: You can read the touch events with "evtest"
$ evtest /dev/input/event0
or tslib apps:
$ export TSLIB_TSDEVICE=/dev/input/event0