[Intel-gfx] [PATCH 2/4] drm/i915: Push an fbc disable across suspend

[Adam Jackson]

On Thu, 2010-04-29 at 15:45 -0700, Eric Anholt wrote:
> On Fri, 23 Apr 2010 11:17:40 -0400, Adam Jackson <ajax at redhat.com> wrote:
> > Restore it on the way back up if we disabled it on the way down.
> 
> I don't think we need to restore it on the way back up.  The
> force_mode_set will DPMS the CRTCs which should turn FBC back on, right?
> 
> Given that, I wonder if we shouldn't move the FBC register save/restore
> to the non-KMS path entirely.

Sounds right to me.

I'm still a little cautious about enabling gen3 fbc again, Jesse made it
sound like there were stability problems with it outside of suspend.
Maybe i915.powersave=2 to enable unstable features?

- ajax
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