From: Zhao Yakui <yakui.zhao@intel.com>
Date: Wed, 28 Oct 2009 05:10:00 +0000 (+0000)
Subject: drm/i915: Add ACPI OpRegion support for Ironlake
X-Git-Tag: v2.6.33-rc1~323^2~5^2~44
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=01c66889c14aa163c49355b3be2ccfb214500599;p=pandora-kernel.git

drm/i915: Add ACPI OpRegion support for Ironlake

Add the support of ACPI opregion on Ironlake so that the backlight
brightness can be adjusted by using ACPI interface
   >/sys/class/backlight/acpi_video0/brightness

Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Tested-by: Zhao Yakui <yakui.zhao@intel.com>
[zhenyuw: cleanups, fix typo for checking GSE irq and convert to
current irq handling logic.]
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
---

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