drm: bridge: dw_hdmi: switch to ->edid_read callback

Prefer using the struct drm_edid based callback and functions.

v2: Fix -Wuninitialized (kernel test robot)
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/400bfdeca4fd25b7624286e5969c4b0b1331c2b4.1706038510.git.jani.nikula@intel.com

drivers/gpu/drm/bridge/synopsys/dw-hdmi.c

@@ -2454,27 +2454,35 @@ static enum drm_connector_status dw_hdmi_detect(struct dw_hdmi *hdmi)
 	return result;
 }
 
-static struct edid *dw_hdmi_get_edid(struct dw_hdmi *hdmi,
+static const struct drm_edid *dw_hdmi_edid_read(struct dw_hdmi *hdmi,
 						struct drm_connector *connector)
 {
-	struct edid *edid;
+	const struct drm_edid *drm_edid;
+	const struct edid *edid;
 
 	if (!hdmi->ddc)
 		return NULL;
 
-	edid = drm_get_edid(connector, hdmi->ddc);
-	if (!edid) {
+	drm_edid = drm_edid_read_ddc(connector, hdmi->ddc);
+	if (!drm_edid) {
 		dev_dbg(hdmi->dev, "failed to get edid\n");
 		return NULL;
 	}
 
+	/*
+	 * FIXME: This should use connector->display_info.is_hdmi and
+	 * connector->display_info.has_audio from a path that has read the EDID
+	 * and called drm_edid_connector_update().
+	 */
+	edid = drm_edid_raw(drm_edid);
+
 	dev_dbg(hdmi->dev, "got edid: width[%d] x height[%d]\n",
 		edid->width_cm, edid->height_cm);
 
 	hdmi->sink_is_hdmi = drm_detect_hdmi_monitor(edid);
 	hdmi->sink_has_audio = drm_detect_monitor_audio(edid);
 
-	return edid;
+	return drm_edid;
 }
 
 /* -----------------------------------------------------------------------------
@@ -2493,17 +2501,18 @@ static int dw_hdmi_connector_get_modes(struct drm_connector *connector)
 {
 	struct dw_hdmi *hdmi = container_of(connector, struct dw_hdmi,
 					     connector);
-	struct edid *edid;
+	const struct drm_edid *drm_edid;
 	int ret;
 
-	edid = dw_hdmi_get_edid(hdmi, connector);
-	if (!edid)
+	drm_edid = dw_hdmi_edid_read(hdmi, connector);
+	if (!drm_edid)
 		return 0;
 
-	drm_connector_update_edid_property(connector, edid);
-	cec_notifier_set_phys_addr_from_edid(hdmi->cec_notifier, edid);
-	ret = drm_add_edid_modes(connector, edid);
-	kfree(edid);
+	drm_edid_connector_update(connector, drm_edid);
+	cec_notifier_set_phys_addr(hdmi->cec_notifier,
+				   connector->display_info.source_physical_address);
+	ret = drm_edid_connector_add_modes(connector);
+	drm_edid_free(drm_edid);
 
 	return ret;
 }
@@ -2980,12 +2989,12 @@ static enum drm_connector_status dw_hdmi_bridge_detect(struct drm_bridge *bridge
 	return dw_hdmi_detect(hdmi);
 }
 
-static struct edid *dw_hdmi_bridge_get_edid(struct drm_bridge *bridge,
+static const struct drm_edid *dw_hdmi_bridge_edid_read(struct drm_bridge *bridge,
 						       struct drm_connector *connector)
 {
 	struct dw_hdmi *hdmi = bridge->driver_private;
 
-	return dw_hdmi_get_edid(hdmi, connector);
+	return dw_hdmi_edid_read(hdmi, connector);
 }
 
 static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
@@ -3002,7 +3011,7 @@ static const struct drm_bridge_funcs dw_hdmi_bridge_funcs = {
 	.mode_set = dw_hdmi_bridge_mode_set,
 	.mode_valid = dw_hdmi_bridge_mode_valid,
 	.detect = dw_hdmi_bridge_detect,
-	.get_edid = dw_hdmi_bridge_get_edid,
+	.edid_read = dw_hdmi_bridge_edid_read,
 };
 
 /* -----------------------------------------------------------------------------