From: Ville Syrjälä <ville.syrjala@linux.intel.com>
Date: Wed, 5 Mar 2014 11:05:46 +0000 (+0200)
Subject: drm/i915: Use RMW to update chicken bits in gen7_enable_fbc()
X-Git-Tag: v3.15-rc1~51^2~55^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=2adb6db8d9fb0f94173a4cba6e1dcb8585f1a928;p=pandora-kernel.git

drm/i915: Use RMW to update chicken bits in gen7_enable_fbc()

gen7_enable_fbc() may write to some registers which we've already
touched, so use RMW so that we don't undo any previous updates.

Also note that we implemnt WaFbcAsynchFlipDisableFbcQueue:bdw.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
---

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