drm/bridge: cdns-mhdp8546: switch to ->edid_read callback

Prefer using the struct drm_edid based callback and functions.
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/88fde35b8d75860d7a2caad94d774aa96b443754.1706038510.git.jani.nikula@intel.com

drivers/gpu/drm/bridge/cadence/cdns-mhdp8546-core.c

@@ -1505,33 +1505,33 @@ static void cdns_mhdp_link_down(struct cdns_mhdp_device *mhdp)
 	mhdp->link_up = false;
 }
 
-static struct edid *cdns_mhdp_get_edid(struct cdns_mhdp_device *mhdp,
+static const struct drm_edid *cdns_mhdp_edid_read(struct cdns_mhdp_device *mhdp,
 						  struct drm_connector *connector)
 {
 	if (!mhdp->plugged)
 		return NULL;
 
-	return drm_do_get_edid(connector, cdns_mhdp_get_edid_block, mhdp);
+	return drm_edid_read_custom(connector, cdns_mhdp_get_edid_block, mhdp);
 }
 
 static int cdns_mhdp_get_modes(struct drm_connector *connector)
 {
 	struct cdns_mhdp_device *mhdp = connector_to_mhdp(connector);
-	struct edid *edid;
+	const struct drm_edid *drm_edid;
 	int num_modes;
 
 	if (!mhdp->plugged)
 		return 0;
 
-	edid = cdns_mhdp_get_edid(mhdp, connector);
-	if (!edid) {
+	drm_edid = cdns_mhdp_edid_read(mhdp, connector);
+	if (!drm_edid) {
 		dev_err(mhdp->dev, "Failed to read EDID\n");
 		return 0;
 	}
 
-	drm_connector_update_edid_property(connector, edid);
-	num_modes = drm_add_edid_modes(connector, edid);
-	kfree(edid);
+	drm_edid_connector_update(connector, drm_edid);
+	num_modes = drm_edid_connector_add_modes(connector);
+	drm_edid_free(drm_edid);
 
 	/*
 	 * HACK: Warn about unsupported display formats until we deal
@@ -2220,12 +2220,12 @@ static enum drm_connector_status cdns_mhdp_bridge_detect(struct drm_bridge *brid
 	return cdns_mhdp_detect(mhdp);
 }
 
-static struct edid *cdns_mhdp_bridge_get_edid(struct drm_bridge *bridge,
+static const struct drm_edid *cdns_mhdp_bridge_edid_read(struct drm_bridge *bridge,
 							 struct drm_connector *connector)
 {
 	struct cdns_mhdp_device *mhdp = bridge_to_mhdp(bridge);
 
-	return cdns_mhdp_get_edid(mhdp, connector);
+	return cdns_mhdp_edid_read(mhdp, connector);
 }
 
 static const struct drm_bridge_funcs cdns_mhdp_bridge_funcs = {
@@ -2239,7 +2239,7 @@ static const struct drm_bridge_funcs cdns_mhdp_bridge_funcs = {
 	.atomic_reset = cdns_mhdp_bridge_atomic_reset,
 	.atomic_get_input_bus_fmts = cdns_mhdp_get_input_bus_fmts,
 	.detect = cdns_mhdp_bridge_detect,
-	.get_edid = cdns_mhdp_bridge_get_edid,
+	.edid_read = cdns_mhdp_bridge_edid_read,
 	.hpd_enable = cdns_mhdp_bridge_hpd_enable,
 	.hpd_disable = cdns_mhdp_bridge_hpd_disable,
 };