After sitting in a public KernelLabs tree for almost 13 months, I finally got around to merging the Micronas DRX-D driver upstream, so now DVB support for the PCTV 330e and HVR-900 R2 are in the upstream kernel (for 2.6.40).
So if you’ve been using the KernelLabs HG tree (which required considerable modification to work with recent kernels), it is no longer an issue and you should either wait for 2.6.40 to be released or use the main LinuxTV media_build tree as opposed to the tree hosted on KernelLabs.
Instructions for installing the LinuxTV media_build tree can be found in the LinuxTV wiki.
Thanks go out to Ralph Metzler for writing the original DRX-D driver, as well as to Mauro Carvalho Chehab for helping clean up the code to make it acceptable upstream.
Update: the original post referred to the code going into 2.6.39, but we missed the merge window so it actually went into 2.6.40. Blog post updated to reflect the correct version (thanks to Gerd for pointing this out).