From: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Fri, 25 Sep 2009 08:01:28 +0000 (+0000)
Subject: drm/i915: Fix FDI M/N setting according with correct color depth
X-Git-Tag: v2.6.32-rc7~79^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=58a27471d00dc09945cbcfbbc5cbcdcd3c28211d;p=pandora-kernel.git

drm/i915: Fix FDI M/N setting according with correct color depth

FDI M/N calculation hasn't taken the current pipe color depth into account,
but always set as 24bpp. This one checks current pipe color depth setting,
and change FDI M/N calculation a little to use bits_per_pixel first, then
convert to bytes_per_pixel later.

This fixes display corrupt issue on Arrandle LVDS with 1600x900 panel
in 18bpp dual-channel mode.

Cc: Stable Team <stable@kernel.org>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
---

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