I have this card and recently I reinstall my system.
The card is recognized from kernel 2.6.28 so you don't need to patch dvb driver.
My vdr, with recent s2api dvb driver, don't use this card. Vdr find the card but can't tune any channel. Femon plugin show me always 0% signal while kaffeine can tune channels.
Maybe I missed something, I'm investigating.
Beside, with my older system I never used dvb-t tuner in vdr.
I have no problem with this card and dvb-s2 drivers from Igor Liplianin's hg together with vdr-1.7.7. I'm not using dvb-t.
I have installed s2-liplianin-2866ecb5e66b.tar.bz2 from http://mercurial.intuxication.org/hg/s2-liplianin/ - it is not current tip, but no need to update.
I have no problem with hvr4000 and dvb-s2/s channels I'm using the Igor Liplianin's hg repo and I am not using dvb-t.
Goga