android: getevent

getevent : it is android tool in device. it show device capabilities.
#getevent -p
#getevent
#getevnet -i

reference:
http://source.android.com/tech/input/getevent.html

The -i option shows even more information than -p, including HID mapping tables and debugging information.
The -l option uses textual labels for all event codes, which is handy.