On Wed, Jun 13, 2012 at 4:50 AM, Go Oz <go1...@yahoo.com> wrote: > Hi Guys, > > I have a custom ARM9 board and trying to use EETI eGalax touchscreen with > it. Single touch is good enough for me. (Controller: > PCAP7200_DUAL_42X54_B_IC - EXC205442CBG) > I am using tslib (1.0-106-gf6c499a) and Qt 4.8.0. My kernel version is > 2.6.27. > I made it work with patching the usbtouchscreen driver.c in the below way. > But the points are very much jittered. > This what I got when I draw a circle. > http://img163.imageshack.us/img163/2003/imag0976u.jpg > > Second option would be using it as HID Device but the result is even worse. > HID Device Descriptor of the touch controller defines 3 times and (I guess) > evdev connects wrong parameters to X and Y. evtest reports Rx and Z when I > touch it. Please see evtest output and usbhid debug output. > > So did anyone came across a similar problem or have an idea how I can use > this touchscreen? > > Best Regards > Gokhan >
This is the wrong list to discuss to much since it has nothing to do with xf86-input-wacom or wacom specific kernel drivers. You probably want a combo of linux-input and tslib mailing lists. But I can give some initial help. All eGalax hardware I've seen that use the hid-core driver require a quirk to be added so the X/Y do not get mis-mapped like your seeing. Edit the file drivers/hid/usbhid/hid-quirks.c, look for the line that has EGALAX product ID and change it to your EGALAX's product ID. This will cause 2 input devices to be used; one useless and the other working correctly. This sounds like a newer device and may have multitouch support. I think Benjamin Tissoires may have an out-of-tree hid-multitouch driver that works with older kernels... At least for kernel versions in use by Android. Chris ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Linuxwacom-devel mailing list Linuxwacom-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxwacom-devel
