tree 28f38f697424251bdcc68b55d1199c238096a446
parent de1aa629aac8377bdfc55674bb8e30b5f15f418d
author Ville Syrjälä <ville.syrjala@linux.intel.com> 1370591222 +0300
committer Daniel Vetter <daniel.vetter@ffwll.ch> 1370594272 +0200

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>