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drm/i915: VLV/CHV PSR needs to exit PSR on every flush. 

ON these platforms we don't have hardware tracking working for any case.
So we need to fake this on software by forcing psr to exit on every
flush.

Manual tests indicated this was needed.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Durgadoss R <durgadoss.r@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Rodrigo Vivi 2015-01-12 10:14:28 -08:00 committed by Daniel Vetter
parent cd52471999
commit 46c3fce60b
1 changed files with 2 additions and 4 deletions
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6
drivers/gpu/drm/i915/intel_psr.c
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@ -620,13 +620,11 @@ void intel_psr_flush(struct drm_device *dev,
/*
* On Valleyview and Cherryview we don't use hardware tracking so
* sprite plane updates or cursor moves don't result in a PSR
* any plane updates or cursor moves don't result in a PSR
* invalidating. Which means we need to manually fake this in
* software for all flushes, not just when we've seen a preceding
* invalidation through frontbuffer rendering. */
if (!HAS_DDI(dev) &&
((frontbuffer_bits & INTEL_FRONTBUFFER_SPRITE(pipe)) ||
(frontbuffer_bits & INTEL_FRONTBUFFER_CURSOR(pipe))))
if (!HAS_DDI(dev))
intel_psr_exit(dev);
if (!dev_priv->psr.active && !dev_priv->psr.busy_frontbuffer_bits)