azbox internal card reader driver

For quite sone time I was trying to find out why I cannot make oscam run on my azbox with an tntsat viaccess card. Finally I figured out that the problem must be in the sco.ko driver. In order to get any further (and I know I am not the only one who tried to used the azbox internal card reader without success) I would like to have a closer look into this driver. I am about to produce a build environment for OpenPLI and I already have the kernel sources but I could not find the sci driver sources for kernel 3.3.1 or higher yet. Can anybody give me a hint where to find them?
I think it would be good if somebody would manage to get this to work.
As far as I understand the internal card reader could be used on older kernel versions (2.6...)
Uli

I managed to get a development environment for OpenRSI to work and I compiled the complete system. Unfortunately the drivers in the "/lib/modules/3.3.1/extra" directory are binary only, even in the source distribution. This means that I am out of luck and I don't see a way to continure work on this.