drm/i915: Also disable PSR on Sink when disabling it on Source.

It is not a bad idea to disable the PSR feature on Sink
when we are disabling on the Source.

v2: Move dpcd write inside mutex protected area as suggested by Sonika.

Cc: Sonika Jindal <sonika.jindal@intel.com>
Suggested-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Reviewed-by: Sonika Jindal <sonika.jindal@intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

1 files changed, 4 insertions, 0 deletions

diff --git a/drivers/gpu/drm/i915/intel_psr.c b/drivers/gpu/drm/i915/intel_psr.c
index a02dd3015b91..b6609e648f75 100644
--- a/drivers/gpu/drm/i915/intel_psr.c
+++ b/drivers/gpu/drm/i915/intel_psr.c
@@ -524,11 +524,15 @@ void intel_psr_disable(struct intel_dp *intel_dp)
                 return;
         }
 
+        /* Disable PSR on Source */
         if (HAS_DDI(dev))
                 hsw_psr_disable(intel_dp);
         else
                 vlv_psr_disable(intel_dp);
 
+        /* Disable PSR on Sink */
+        drm_dp_dpcd_writeb(&intel_dp->aux, DP_PSR_EN_CFG, 0);
+
         dev_priv->psr.enabled = NULL;
         mutex_unlock(&dev_priv->psr.lock);