I'd hope that as most drivers exist under Linux and many drivers (such as this) just deliver a data stream, that drivers wouldn't be too difficult to port. However, I'm sure this is a very overly simplistic view otherwise we'd probably already have drivers.
Of course, once you get the data you need an application (and power) to do something useful with it. In the case of a DVB video stream I'm guessing that probably means 68060+ ?