Just wanted to add my experience in getting an AR1100 chip to work with Emteria. The trick I found is that you have to put the AR1100 into HID mode in order to calibrate the touchscreen, THEN put the AR1100 into digitizer mode, and it should work with Emteria. I also installed the .ipc file, but I don't know if that file is really necessary or not; regardless, it's not hard to copy to the download folder from a usb stick, then reboot into recovery mode, mount the system, then copy to the system/usr/ipc folder.
I haven't tried, but I did the calibration/mode changes using an old Win7 PC. I think you can do this on a Win10 PC, BUT, once you put the AR1100 into digitizer mode, that's it; you can't get it back out of digitizer mode without Win7 (or a raspberry pi and the github code that apparently fixes it; I haven't tried that).
