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drm/i915: Disable trickle feed via MI_ARB_STATE for the gen4
authorVille Syrjälä <ville.syrjala@linux.intel.com>
Fri, 7 Jun 2013 07:47:02 +0000 (10:47 +0300)
committerDaniel Vetter <daniel.vetter@ffwll.ch>
Fri, 7 Jun 2013 08:37:52 +0000 (10:37 +0200)
commit20f949670f51341f255b17ec4650fa69ba22cb87
tree28f38f697424251bdcc68b55d1199c238096a446tree | snapshot
parentde1aa629aac8377bdfc55674bb8e30b5f15f418dcommit | diff
drm/i915: Disable trickle feed via MI_ARB_STATE for the gen4

According to BSpec, trickle feed should be disabled for BW and
mobile CL. Those constraints seem to match all of our gen4 chipsets.

Trickle feed is disabled via the MI_ARB_STATE register instead of
per plane controls on gen4.

Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
drivers/gpu/drm/i915/intel_pm.c diff | blob | history
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