[PATCH v2 5/8] drm/i915/psr: Clear pr_dpcd as well on disconnect

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

Currently we are leaving pr_dpcd containing Panel Replay capability DPCD
registers as it is on disconnect. Clear it as well on disconnect.

v2: add FIXME

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

diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index dcceb0ae2a56d..3838835e7e7eb 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -6048,7 +6048,15 @@ intel_dp_detect(struct drm_connector *_connector,
 
 	if (status == connector_status_disconnected) {
 		intel_dp_test_reset(intel_dp);
+		/*
+		 * FIXME: Resetting these caps here cause
+		 * state computation fail if the connector need to be
+		 * modeset after sink disconnect. Move resetting them
+		 * to where new sink is connected.
+		 */
 		memset(connector->dp.dsc_dpcd, 0, sizeof(connector->dp.dsc_dpcd));
+		memset(connector->dp.panel_replay_caps.dpcd, 0,
+		       sizeof(connector->dp.panel_replay_caps.dpcd));
 		intel_dp->psr.sink_panel_replay_support = false;
 		intel_dp->psr.sink_panel_replay_su_support = false;
 		intel_dp->psr.sink_panel_replay_dsc_support =
-- 
2.43.0