Screen freeze observed if AUX_FRAME_SYNC is not disabled
on psr2 exit.AUX_FRAME_SYNC needed for psr2 is enabled during
psr2 entry. It must be disabled on psr2 exit.
Cc: Rodrigo Vivi <rodrigo.vivi@xxxxxxxxx>
Cc: Jim Bride <jim.bride@xxxxxxxxxxxxxxx>
Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju@xxxxxxxxx>
Signed-off-by: Patil Deepti <deepti.patil@xxxxxxxxx>
---
drivers/gpu/drm/i915/intel_psr.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index ff2ecfd..93eb0f0 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -589,6 +589,11 @@ static void hsw_psr_disable(struct intel_dp *intel_dp)
struct drm_i915_private *dev_priv = to_i915(dev);
if (dev_priv->psr.active) {
+ if (dev_priv->psr.aux_frame_sync)
+ drm_dp_dpcd_writeb(&intel_dp->aux,
+ DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF,
+ 0);
+
if (dev_priv->psr.psr2_support)
I915_WRITE(EDP_PSR2_CTL,
I915_READ(EDP_PSR2_CTL) &
@@ -729,6 +734,10 @@ static void intel_psr_exit(struct drm_i915_private *dev_priv)
return;
if (HAS_DDI(dev_priv)) {
+ if (dev_priv->psr.aux_frame_sync)
+ drm_dp_dpcd_writeb(&intel_dp->aux,
+ DP_SINK_DEVICE_AUX_FRAME_SYNC_CONF,
+ 0);
if (dev_priv->psr.psr2_support) {
val = I915_READ(EDP_PSR2_CTL);
WARN_ON(!(val & EDP_PSR2_ENABLE));
--
1.9.1
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