I have attached a patch which contains a driver and documentation for
the MicroTouch (14-206) USB Capacitive Touchscreen controller.  It based
on some older code that I have been using for quite some time now (since
2.4.17).  This new version has been completely re-written, and now uses
Linux Input.  Greg, It would be great to possibly get it into 2.6.4.
Please let me know if I have it all wrong...

Unfortunately, the X11 mouse driver only seems capable of handling
relative data rather than absolute.  Hopefully some one will create a
suitable X11 driver capable of accepting absolute data from Linux
Input.  If anyone is aware of one, please let me know.  Otherwise, I
will most likely begin some work on a patch for GPM.

Calibration support will be on the way soon, but I'm not sure of the
best way to implement.  Perhaps some abstract functions could come
available in evdev which can call vendor specific commands for the
calibration within this driver (and perhaps others).