From: Chris Wilson Date: Sun, 25 Jul 2010 22:09:13 +0000 (+0100) Subject: drm/i915: Clear any existing dither mode prior to enabling spatial dithering X-Git-Tag: v2.6.35~33^2~10 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a392a10367508930607a17ab60b4148f86adf2bc;p=pandora-kernel.git drm/i915: Clear any existing dither mode prior to enabling spatial dithering We cannot the initial configuration set by the BIOS not to have a dither mode enabled which conflicts with our enabling the Spatial Temporal 1 dither mode for PCH. In particular, the BIOS may either enable temporal dithering or the Spatial Temporal 2 with the result that we enable pure temporal dithering. Temporal dithering looks bad and is perceived as a flicker. Fixes: Bug 29248 - [Arrandale] Annoying flicker on internal panel, goes away after suspend to RAM https://bugs.freedesktop.org/show_bug.cgi?id=29248 Signed-off-by: Chris Wilson Signed-off-by: Eric Anholt --- Reading git-diff-tree failed