[Intel-gfx] [PATCH 08/15] drm/i915: remove PSR BDW single frame update.

Rodrigo Vivi rodrigo.vivi at intel.com
Fri Nov 14 17:52:34 CET 2014


Single frame update is a feature available on BDW for PSR that allows
Source to send Sink only one frame and get it updated. Usually useful
when page fliping. However with our frontbuffer tracking where we force
psr exit on flips we don't need this feature.

Also after it got added here many workaround was added to documentation
to mask some bits when using single frame update. So the safest thing
is to just stop using it.

Signed-off-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
---
 drivers/gpu/drm/i915/intel_psr.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index 4cfe7a4..66d24c2 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -180,7 +180,6 @@ static void intel_psr_enable_source(struct intel_dp *intel_dp)
 		val |= EDP_PSR_LINK_STANDBY;
 		val |= EDP_PSR_TP2_TP3_TIME_0us;
 		val |= EDP_PSR_TP1_TIME_0us;
-		val |= IS_BROADWELL(dev) ? BDW_PSR_SINGLE_FRAME : 0;
 	} else
 		val |= EDP_PSR_LINK_DISABLE;
 
-- 
1.9.3




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