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

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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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Ville Syrjälä 2014-03-05 13:05:46 +02:00 • committed by Daniel Vetter

parent c7c6562268

commit 2adb6db8d9

1 changed files with 5 additions and 2 deletions

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drivers/gpu/drm/i915/intel_pm.c

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