I am planning to get a touches to the custom application by reading directly from /dev/devi/touch0.  I the case where 
devi-hid is started with calibration option the received touch data corresponds to raw position.

The moment when the calibration file is specified (filter abs -f ) the received touch data does not make any sense. The 
devi-hid always is looking for 640x480 calibration calibration resolution regardless of -R option set for devi-hid.

Is any help available beside regular SDk help ? I would also appreciate any helpful suggestions or anything which can 
clarify how to properly connect  raw touch screen data to desired screen resolution. 

The application is not using screens or io-graphics. 

Regards
Janusz