drm/i915: Print HDCP version info for all connectors

De-duplicate the HDCP version code for each connector and print it for
all connectors.

Cc: Juston Li <juston.li@intel.com>
Cc: Ramalingam C <ramalingam.c@intel.com>
Reviewed-by: Juston Li <juston.li@intel.com>
Reviewed-by: Ramalingam C <ramalingam.c@intel.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>

Link: https://patchwork.freedesktop.org/patch/msgid/20200227185714.171466-1-sean@poorly.run #v4
Link: https://patchwork.freedesktop.org/patch/msgid/20200305201236.152307-16-sean@poorly.run #v5
Link: https://patchwork.freedesktop.org/patch/msgid/20200429195502.39919-16-sean@poorly.run #v6
Link: https://patchwork.freedesktop.org/patch/msgid/20200623155907.22961-17-sean@poorly.run #v7

Changes in v4:
- Added to the set
Changes in v5:
-Print "No connector support" for hdcp sink capability as well (Ram)
Changes in v6:
-None
Changes in v7:
-None
Changes in v8:
-None
Signed-off-by: Ramalingam C <ramalingam.c@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200818153910.27894-17-sean@poorly.run

drivers/gpu/drm/i915/display/intel_display_debugfs.c

@@ -601,6 +601,11 @@ static void intel_hdcp_info(struct seq_file *m,
 {
 	bool hdcp_cap, hdcp2_cap;
 
+	if (!intel_connector->hdcp.shim) {
+		seq_puts(m, "No Connector Support");
+		goto out;
+	}
+
 	hdcp_cap = intel_hdcp_capable(intel_connector);
 	hdcp2_cap = intel_hdcp2_capable(intel_connector);
 
@@ -612,6 +617,7 @@ static void intel_hdcp_info(struct seq_file *m,
 	if (!hdcp_cap && !hdcp2_cap)
 		seq_puts(m, "None");
 
+out:
 	seq_puts(m, "\n");
 }
 
@@ -628,10 +634,6 @@ static void intel_dp_info(struct seq_file *m,
 
 	drm_dp_downstream_debug(m, intel_dp->dpcd, intel_dp->downstream_ports,
 				&intel_dp->aux);
-	if (intel_connector->hdcp.shim) {
-		seq_puts(m, "\tHDCP version: ");
-		intel_hdcp_info(m, intel_connector);
-	}
 }
 
 static void intel_dp_mst_info(struct seq_file *m,
@@ -649,10 +651,6 @@ static void intel_hdmi_info(struct seq_file *m,
 	struct intel_hdmi *intel_hdmi = enc_to_intel_hdmi(intel_encoder);
 
 	seq_printf(m, "\taudio support: %s\n", yesno(intel_hdmi->has_audio));
-	if (intel_connector->hdcp.shim) {
-		seq_puts(m, "\tHDCP version: ");
-		intel_hdcp_info(m, intel_connector);
-	}
 }
 
 static void intel_lvds_info(struct seq_file *m,
@@ -708,6 +706,9 @@ static void intel_connector_info(struct seq_file *m,
 		break;
 	}
 
+	seq_puts(m, "\tHDCP version: ");
+	intel_hdcp_info(m, intel_connector);
+
 	seq_printf(m, "\tmodes:\n");
 	list_for_each_entry(mode, &connector->modes, head)
 		intel_seq_print_mode(m, 2, mode);
@@ -2037,10 +2038,6 @@ static int i915_hdcp_sink_capability_show(struct seq_file *m, void *data)
 	if (connector->status != connector_status_connected)
 		return -ENODEV;
 
-	/* HDCP is supported by connector */
-	if (!intel_connector->hdcp.shim)
-		return -EINVAL;
-
 	seq_printf(m, "%s:%d HDCP version: ", connector->name,
 		   connector->base.id);
 	intel_hdcp_info(m, intel_connector);