Touchscreens

configname: CONFIG_INPUT_TOUCHSCREEN

Linux Kernel Configuration
└─>Device Drivers
└─>Input device support
└─>Touchscreens
In linux kernel since version 2.6.20 (release Date: 2007-02-04)  
Say Y here, and a list of supported touchscreens will be displayed.
This option doesn't affect the kernel.

If unsure, say Y.