On Wed, Jan 22, 2014 at 12:53:50PM +0900, Mike Hommey wrote:
> Hi,
>
> What is the current status for DP MST support on Haswell? Are there
> experimental patches that can be tested? If not, what can be done to
> help progress?
No patches to test yet. I would gate DP MST on the current DP aux
refactoring that Thierry Reding (core) and Jani Nikula (i915) are doing
at the moment.
Once done, you need someone with a DP 1.2 spec to:
- implement the cross-drivers features (a DP aux bus, handle device
discovery, ...)
- implement the i915 bits
- Figure out how to expose and do a modeset on those devices in the
current CRTC/encoder/connector model.
> Supposing the kernel parts are figured, will userland need updates
> accordingly, or would the existing multi-head support work as-is?
Yes, userland will most likely need updates.
Not a small task by any definition.
--
Damien
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