[v6 08/12] drm/i915/lspcon: Do not send infoframes to non-HDMI sinks

[Uma Shankar]

From: Ville Syrjälä <ville.syrjala at linux.intel.com>

Non-HDMI sinks shouldn't be sent infoframes. Check for that when
using LSPCON.

FIXME: How do we turn off infoframes once enabled? Do we even
       have to?

Signed-off-by: Ville Syrjälä <ville.syrjala at linux.intel.com>
---
 drivers/gpu/drm/i915/display/intel_ddi.c           | 10 ++++------
 drivers/gpu/drm/i915/display/intel_display_types.h |  1 +
 drivers/gpu/drm/i915/display/intel_dp.c            |  7 ++++++-
 3 files changed, 11 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_ddi.c b/drivers/gpu/drm/i915/display/intel_ddi.c
index 1c0c369573e7..6d8f80c92979 100644
--- a/drivers/gpu/drm/i915/display/intel_ddi.c
+++ b/drivers/gpu/drm/i915/display/intel_ddi.c
@@ -3451,19 +3451,17 @@ static void intel_ddi_pre_enable(struct intel_atomic_state *state,
 		intel_ddi_pre_enable_hdmi(state, encoder, crtc_state,
 					  conn_state);
 	} else {
-		struct intel_lspcon *lspcon =
-				enc_to_intel_lspcon(encoder);
+		struct intel_digital_port *dig_port = enc_to_dig_port(encoder);
 
 		intel_ddi_pre_enable_dp(state, encoder, crtc_state,
 					conn_state);
-		if (lspcon->active) {
-			struct intel_digital_port *dig_port =
-					enc_to_dig_port(encoder);
 
+		/* FIXME precompute everything properly */
+		/* FIXME how do we turn infoframes off again? */
+		if (dig_port->lspcon.active && dig_port->dp.has_hdmi_sink)
 			dig_port->set_infoframes(encoder,
 						 crtc_state->has_infoframe,
 						 crtc_state, conn_state);
-		}
 	}
 }
 
diff --git a/drivers/gpu/drm/i915/display/intel_display_types.h b/drivers/gpu/drm/i915/display/intel_display_types.h
index ca99a05f52da..57f89fdcb50f 100644
--- a/drivers/gpu/drm/i915/display/intel_display_types.h
+++ b/drivers/gpu/drm/i915/display/intel_display_types.h
@@ -1272,6 +1272,7 @@ struct intel_dp {
 	u8 sink_count;
 	bool link_mst;
 	bool link_trained;
+	bool has_hdmi_sink;
 	bool has_audio;
 	bool reset_link_params;
 	u8 dpcd[DP_RECEIVER_CAP_SIZE];
diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c
index 55fda074c0ad..bb2526800232 100644
--- a/drivers/gpu/drm/i915/display/intel_dp.c
+++ b/drivers/gpu/drm/i915/display/intel_dp.c
@@ -6093,7 +6093,11 @@ intel_dp_set_edid(struct intel_dp *intel_dp)
 	edid = intel_dp_get_edid(intel_dp);
 	intel_connector->detect_edid = edid;
 
-	intel_dp->has_audio = drm_detect_monitor_audio(edid);
+	if (edid && edid->input & DRM_EDID_INPUT_DIGITAL) {
+		intel_dp->has_hdmi_sink = drm_detect_hdmi_monitor(edid);
+		intel_dp->has_audio = drm_detect_monitor_audio(edid);
+	}
+
 	drm_dp_cec_set_edid(&intel_dp->aux, edid);
 	intel_dp->edid_quirks = drm_dp_get_edid_quirks(edid);
 }
@@ -6107,6 +6111,7 @@ intel_dp_unset_edid(struct intel_dp *intel_dp)
 	kfree(intel_connector->detect_edid);
 	intel_connector->detect_edid = NULL;
 
+	intel_dp->has_hdmi_sink = false;
 	intel_dp->has_audio = false;
 	intel_dp->edid_quirks = 0;
 }
-- 
2.22.0