I am working on kernel driver for my multi touch device,

I have a question regarding the multitouch events i need to generate from the driver

I implemented protocol A events.

https://www.kernel.org/doc/Documentation/input/multi-touch-protocol.txt


   ABS_MT_POSITION_X x[0]
   ABS_MT_POSITION_Y y[0]
   SYN_MT_REPORT
   ABS_MT_POSITION_X x[1]
   ABS_MT_POSITION_Y y[1]
   SYN_MT_REPORT
   SYN_REPORT

But Android don't recognise button Up/Down , Can anyone post an example

I am using pandaboard Linaro 4.1. ver

thanks