adads.is a driver for ADS7846
it registers ADS7846 as a misc device
to compile it, type

arm-linux-gcc -O2 -D__KERNEL__ -DMODULE -I"your kernel include path" -c ads.c

and place the driver module file to you module path

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SDL_ads7846.patch is a patch file for SDL-1.2.8
apply it and make SDL library with your corss-compiler