Marc was really just trying to be helpful and needed some clarification, there's no reason to get snippy about it.
That said, no there do not seem to be complete drivers for the F5L009, or anyone really in active development of them at the moment. Congratulations, you've found a project! :)
I did some searching around and it seems that this guy did some serious groundwork on the reverse engineering effort and produced something at least semi-usable to start. How usable I have no idea not having the hardware to play with myself. That post is very thorough and would be a great starting point in your own efforts if you're serious about hacking on the drivers yourself.
He's also posted the code he generated in that work in his github repo over here.
So my suggestion to you would be to decide whether you want to take this project on or not firstly. If so go give that post a good read through, peek around through his code, and then you may want to contact him to say you're interested in development for the device as well and go from there.