drm/hisilicon/hibmc: convert to struct drm_edid

Prefer the struct drm_edid based functions for reading the EDID and
updating the connector.
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/386e3a64efbdd61c3eaed3f49ea9c3ebd4fcd41d.1715691257.git.jani.nikula@intel.comSigned-off-by: Jani Nikula <jani.nikula@intel.com>

drivers/gpu/drm/hisilicon/hibmc/hibmc_drm_vdac.c

@@ -24,14 +24,16 @@
 
 static int hibmc_connector_get_modes(struct drm_connector *connector)
 {
-	int count;
-	void *edid;
 	struct hibmc_connector *hibmc_connector = to_hibmc_connector(connector);
+	const struct drm_edid *drm_edid;
+	int count;
+
+	drm_edid = drm_edid_read_ddc(connector, &hibmc_connector->adapter);
 
-	edid = drm_get_edid(connector, &hibmc_connector->adapter);
-	if (edid) {
-		drm_connector_update_edid_property(connector, edid);
-		count = drm_add_edid_modes(connector, edid);
+	drm_edid_connector_update(connector, drm_edid);
+
+	if (drm_edid) {
+		count = drm_edid_connector_add_modes(connector);
 		if (count)
 			goto out;
 	}
@@ -42,7 +44,8 @@ static int hibmc_connector_get_modes(struct drm_connector *connector)
 	drm_set_preferred_mode(connector, 1024, 768);
 
 out:
-	kfree(edid);
+	drm_edid_free(drm_edid);
+
 	return count;
 }