David Airlie has shared that he's been working on the TV-Out support for the
xf86-video-ati driver on the newer card generations. Last year there was
Radeon TV-Out support for the older ATI graphics cards, but David Airlie now has it working on the R500/600 series and is about ready with the R700 series support.
This TV-Out support is being powered by the
AtomBIOS. This support hasn't yet been merged to master, but currently can be found in an
atom-tvout branch. Support for DCE 3.2 digital connectors were also committed to the xf86-video-ati driver in the past few days that does allow for
RV730 series support.
Additional details can be read about on
David Airlie's blog.