From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Fri, 29 Jan 2010 19:27:07 +0000 (-0800)
Subject: drm/i915: add dynamic performance control support for Ironlake
X-Git-Tag: v2.6.34-rc1~209^2~11^2~24^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f97108d1d0facc7902134ebc453b226bbd4d1cdb;p=pandora-kernel.git

drm/i915: add dynamic performance control support for Ironlake

Ironlake (and 965GM, which this patch doesn't support) supports a
hardware performance and power management feature that allows it to
adjust to changes in GPU load over time with software help.  The goal
if this is to maximize performance/power for a given workload.

This patch enables that feature, which is also a requirement for
supporting Intelligent Power Sharing, a feature which allows for
dynamic budgeting of power between the CPU and GPU in Arrandale
platforms.

Tested-by: ykzhao <yakui.zhao@intel.com>
[anholt: Resolved against the irq handler loop removal]
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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