drm/i915/display: Attach content type property for LSPCON

Content type is supported on HDMI sink devices. Attached the
property for the same for LSPCON based devices.

v2: Added the content type programming when we are attaching
the property to connector, as suggested by Ville.

v3: Need to attach content type on intel_dp_add_properties
as creating of new properties is not possible at late_register.
Signed-off-by: Uma Shankar <uma.shankar@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20201130204738.2443-7-uma.shankar@intel.com

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

@@ -7195,6 +7195,9 @@ intel_dp_add_properties(struct intel_dp *intel_dp, struct drm_connector *connect
 
 	intel_attach_colorspace_property(connector);
 
+	if (intel_bios_is_lspcon_present(dev_priv, port))
+		drm_connector_attach_content_type_property(connector);
+
 	if (IS_GEMINILAKE(dev_priv) || INTEL_GEN(dev_priv) >= 11)
 		drm_object_attach_property(&connector->base,
 					   connector->dev->mode_config.hdr_output_metadata_property,

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

@@ -539,6 +539,8 @@ void lspcon_set_infoframes(struct intel_encoder *encoder,
 		frame.avi.ycc_quantization_range = HDMI_YCC_QUANTIZATION_RANGE_LIMITED;
 	}
 
+	drm_hdmi_avi_infoframe_content_type(&frame.avi, conn_state);
+
 	ret = hdmi_infoframe_pack(&frame, buf, sizeof(buf));
 	if (ret < 0) {
 		DRM_ERROR("Failed to pack AVI IF\n");