[Intel-gfx] [PATCH] drm/i915: Fix DDC bus selection for multifunction SDVO

Adam Jackson ajax at redhat.com
Mon May 10 17:38:13 CEST 2010


On Fri, 2010-05-07 at 14:41 -0700, Eric Anholt wrote:

> Applied those two.
> 
> The fact that we're exposing 2 connectors for this situation is bogus in
> how the KMS architecture is supposed to work, right?  I mean, we've got
> 2 "outputs" in this encoder going to one physical connector.  The user
> should see one connector, and the encoder+connector should sort out how
> to program the encoder for that situation.

That sounds more sane to me.  I don't know that we've formally taken a
stand on that in KMS, but we might as well start.

> Would having the same DDC bus for the child devs be a good enough
> indication that we should have one SDVO encoder/connector for them and
> they get to light up one SDVO encoder to the connector at a time? 

I can't think of a scenario where "shared DDC bus" wouldn't mean "shared
connector".  So, yeah.

- ajax
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