I have multitouch screen overlays from PQ Labs that I would like to use with my Pi. They only have drivers for the x86 architecture.
Is there any way I can use these? If not, are there other multitouch overlays compatible with the Pi?
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If the manufacturer provides open source linux drivers then they could be recompiled for the pi. There are a bunch of touchscreen drivers available for the raspbian kernel (
src/drivers/input/touchscreen) some of which are apparently multitouch. The list is:
ADS7846/TSC2046/AD7873 and AD(S)7843 based touchscreens AD7877 based touchscreens Analog Devices AD7879-1/AD7889-1 touchscreen interface Atmel mXT I2C Touchscreen BU21013 based touch panel controllers cy8ctmg110 touchscreen Dynapro serial touchscreen Hampshire serial touchscreen EETI touchscreen panel support Fujitsu serial touchscreen Gunze AHL-51S touchscreen Elo serial touchscreens Wacom W8001 penabled serial touchscreen MAX11801 based touchscreens MELFAS MCS-5000 touchscreen MicroTouch serial touchscreens iNexio serial touchscreens ICS MicroClock MK712 touchscreen Penmount serial touchscreen Touchright serial touchscreen Touchwin serial touchscreen USB Touchscreen Driver Sahara TouchIT-213 touchscreen TSC-10/25/40 serial touchscreen support TSC2005 based touchscreens TSC2007 based touchscreens W90P910 touchscreen driver Sitronix ST1232 touchscreen controllers TPS6507x based touchscreens
Obviously you then need userland software; Qt may have some support.
Without the correct driver you get basic mouse support, but beware it becomes totally useless once you start using several fingers. It simply stops responding, so it's totally unreliable in that way.
In my experience, the drivers @goldilocks suggested will not work at all. I have tried several panels in different versions and sizes. I've exchanged emails with some chinese guys they provide as support contact.
What i've found is that there is an opensource driver, they provide it and even annouce it on their site. Also there is a more up to date version, but it is delivered only to confirmed customers. With few minor changes, I managed to build that one on the Pi, but unfortunatly it won't recognize the panel. I tried with several kernel versions and all i get is either unrecognizable panels or kernel panics. I have the feeling this is about some power issues or some sort of non-standard electronics or protocols. This is odd because they officially support Android.
Latest news i got from tech support (1~2 months ago) is that the new versions of the panels are standard HID and work flawlessly as a single touch mouse without any driver, just plug & play. But you have to be lucky as there are a lot of old panels on stock and you simply cannot ask to be served the recent ones. Anyway, for me, i need multitouch support, so it's not enough.
Im very interested in getting them to work, i can provide the latest opensource drivers and even remote ssh if any kernel-expert wants to dig.