[PATCH 08/12] drm/i915/psr: Detect panel replay selective update support

["Jouni Högander" <jouni.hogander@intel.com>]

Detect panel replay selective update support and store it into
intel_psr->sink_panel_replay_su_support.

Signed-off-by: Jouni Högander <jouni.hogander@intel.com>
---
 drivers/gpu/drm/i915/display/intel_psr.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_psr.c b/drivers/gpu/drm/i915/display/intel_psr.c
index f66fdda7418a..d311eed72be5 100644
--- a/drivers/gpu/drm/i915/display/intel_psr.c
+++ b/drivers/gpu/drm/i915/display/intel_psr.c
@@ -519,9 +519,15 @@ static void _panel_replay_init_dpcd(struct intel_dp *intel_dp)
 		return;
 	}
 
-	drm_dbg_kms(&i915->drm,
-		    "Panel replay is supported by panel\n");
 	intel_dp->psr.sink_panel_replay_support = true;
+
+	if (pr_dpcd & DP_PANEL_REPLAY_SU_SUPPORT)
+		intel_dp->psr.sink_panel_replay_su_support = true;
+
+	drm_dbg_kms(&i915->drm,
+		    "Panel replay %sis supported by panel\n",
+		    intel_dp->psr.sink_panel_replay_su_support ?
+		    "selective_update " : "");
 }
 
 static void _psr_init_dpcd(struct intel_dp *intel_dp)
-- 
2.34.1