If you have the Steam Controller and Linux you might want to check this out.

Found a cool open source driver and UI for the Steam Controller.

They don’t have an rpm package for CentOS 7, but compiling it should be easy enough. This will be really nice for games that don’t cooperate with the Steam UI properly, IOW DOSBox which yes, I have installed under Linux. There are some old classics I’d like to play using the Steam Controller (like Jazz Jackrabbit) which gave me absolute hell under Windows.