From: Jesse Barnes <jbarnes@virtuousgeek.org>
Date: Thu, 14 Jan 2010 20:48:02 +0000 (+0000)
Subject: drm/i915: disable LVDS downclock by default
X-Git-Tag: v2.6.33-rc5~62^2~4
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=33814341f22f13cec17e8d7fbf6f7e8000e3efa4;p=pandora-kernel.git

drm/i915: disable LVDS downclock by default

Many platform support this feature, and it can provide significant
power savings when the reduced refresh rate is low.  However, on some
platforms a secondary (reduced) timing is provided but not actually
supported by the hardware.  This results in undesirable flicker at
runtime.

So disable the feature by default, but allow users to opt-in to the
reduced clock behavior with a new module parameter, lvds_downclock,
that can be set to 1 to enable the feature.

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

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