From: Zhenyu Wang <zhenyuw@linux.intel.com>
Date: Thu, 27 May 2010 02:26:42 +0000 (+0800)
Subject: drm/i915: Fix PIPE_CONTROL command on Sandybridge
X-Git-Tag: v2.6.35-rc2~56^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca76482e0f4b64942c704fa11c620ffd1bdd8475;p=pandora-kernel.git

drm/i915: Fix PIPE_CONTROL command on Sandybridge

Sandybridge(Gen6) has new format for PIPE_CONTROL command,
the flush and post-op control are in dword 1 now. This
changes command length field for difference between Ironlake
and Sandybridge.

I tried to test this with noop request and issue PIPE_CONTROL
command for each sequence and track notify interrupts, which
seems work fine. Hopefully we don't need workaround like on
Ironlake for Sandybridge.

Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
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