From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 8 Oct 2009 17:16:48 +0000 (-0700)
Subject: drm/i915: add render standby support
X-Git-Tag: v2.6.33-rc1~323^2~5^2~62
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=97f5ab6651a996ecefed73e41684422f3b29d9a8;p=pandora-kernel.git

drm/i915: add render standby support

Render standy allows the GPU to power down the render unit when idle.
In order for this to work, it needs a page of graphics memory to save
state.  This patch allocates that page and enables the feature on
supported chipsets.

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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