[PATCH v4 4/7] drm/i915: utilize subconnector property for DP

[Oleg Vasilev <oleg.vasilev@intel.com>]

Since DP-specific information is stored in driver's structures, every
driver needs to implement subconnector property by itself.

v2: updates to match previous commit changes

Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Tested-by: Oleg Vasilev <oleg.vasilev@intel.com>
Signed-off-by: Oleg Vasilev <oleg.vasilev@intel.com>
Cc: Ville Syrjälä <ville.syrjala@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
---
 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 6da6a4859f06..318c7e50cba3 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -5434,6 +5434,11 @@ intel_dp_detect(struct drm_connector *connector,
 	if (status != connector_status_connected && !intel_dp->is_mst)
 		intel_dp_unset_edid(intel_dp);
 
+	if (!intel_dp_is_edp(intel_dp))
+		drm_dp_set_subconnector_property(connector,
+						 status,
+						 intel_dp->dpcd,
+						 intel_dp->downstream_ports);
 	return status;
 }
 
@@ -6332,6 +6337,9 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
 	struct drm_i915_private *dev_priv = to_i915(connector->dev);
 	enum port port = dp_to_dig_port(intel_dp)->base.port;
 
+	if (!intel_dp_is_edp(intel_dp))
+		drm_mode_add_dp_subconnector_property(connector);
+
 	if (!IS_G4X(dev_priv) && port != PORT_A)
 		intel_attach_force_audio_property(connector);
 
-- 
2.23.0

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