tmaul/cm_device_andypad_andypadpro — comment on commit 8ea9cbd394bfc5ea0e922ad116ea2c0a9750bdb4
File:  line 0
By Zepheus:

When you checkout naosbd's files, there's a commit to his framework where he did some code for his screen invertion tool. You can easily do this yourself in the source and in theory it would go like this:
x = rawaxes.x - x; //invert screen

This way, we can keep up with the newer kernel releases and still use it on the AndyPad.