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Commit 620011e0 authored by Philipp Zabel's avatar Philipp Zabel
Browse files

drm/imx: imx-ldb: use of_graph_get_endpoint_by_regs helper 



Instead of using of_graph_get_port_by_id() to get the port and then
of_get_child_by_name() to get the first endpoint, get to the endpoint
in a single step.

Signed-off-by: default avatarPhilipp Zabel <p.zabel@pengutronix.de>
parent ee896866

drivers/gpu/drm/imx/imx-ldb.c

+18 −17
Original line number Diff line number Diff line
@@ -558,7 +558,7 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data) 
	for_each_child_of_node(np, child) {

		struct imx_ldb_channel *channel;

		struct device_node *ddc_node;

		struct device_node *port;

		struct device_node *ep;



		ret = of_property_read_u32(child, "reg", &i);

		if (ret || i < 0 || i > 1)
@@ -581,24 +581,25 @@ static int imx_ldb_bind(struct device *dev, struct device *master, void *data) 
		 * The output port is port@4 with an external 4-port mux or

		 * port@2 with the internal 2-port mux.

		 */

		port = of_graph_get_port_by_id(child, imx_ldb->lvds_mux ? 4 : 2);

		if (port) {

			struct device_node *endpoint, *remote;



			endpoint = of_get_child_by_name(port, "endpoint");

			if (endpoint) {

				remote = of_graph_get_remote_port_parent(endpoint);

		ep = of_graph_get_endpoint_by_regs(child,

						   imx_ldb->lvds_mux ? 4 : 2,

						   -1);

		if (ep) {

			struct device_node *remote;



			remote = of_graph_get_remote_port_parent(ep);

			of_node_put(ep);

			if (remote)

				channel->panel = of_drm_find_panel(remote);

			else

				return -EPROBE_DEFER;

			of_node_put(remote);

			if (!channel->panel) {

				dev_err(dev, "panel not found: %s\n",

					remote->full_name);

				return -EPROBE_DEFER;

			}

		}

		}



		ddc_node = of_parse_phandle(child, "ddc-i2c-bus", 0);

		if (ddc_node) {