[Intel-gfx] [PATCH] drm/i915: Only enable IPS polling for gen5

[Daniel Vetter]

On Tue, May 01, 2012 at 07:45:02PM +0200, Daniel Vetter wrote:
> On Tue, May 01, 2012 at 07:58:27AM -0700, Jesse Barnes wrote:
> > On Mon, 30 Apr 2012 19:35:02 +0100
> > Chris Wilson <chris at chris-wilson.co.uk> wrote:
> > 
> > > On SandyBridge IPS was entirely implemented in hardware and not reliant
> > > on the driver monitoring power consumption and feeding back desired run
> > > states, so the hardware is able to adapt quicker and more flexibly. Which
> > > is a huge relief for us as we no longer have to carry empirically
> > > derived magic algorithms.
> > > 
> > > Yet despite the advance in technology, the driver was still doing its
> > > IPS polling on all machines. Restrict it to the only supported hardware,
> > > Clarkdale/Arrandale.
> > > 
> > > Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
> > > Cc: Jesse Barnes <jbarnes at virtuousgeek.org>
> > Reviewed-by: Jesse Barnes <jbarnes at virtuousgeek.org>
> Queued for -next, thanks for the patch.
Patch is now also in -fixes because it gets rid of a WARN backtrace.
Tested-by and bugzilla link added.
-Daniel
-- 
Daniel Vetter
Mail: daniel at ffwll.ch
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