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
Additional details can be read about on David Airlie's blog