drm/imx: parallel-display: 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: Philipp Zabel <p.zabel@pengutronix.de>

diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c
index 363e2c7741e2ea736e1cea604323116dc4ae0d75..27755ecbf516b1a51440640198547265df3bce67 100644 (file)
--- a/drivers/gpu/drm/imx/parallel-display.c
+++ b/drivers/gpu/drm/imx/parallel-display.c
@@ -203,7 +203,7 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
 {
        struct drm_device *drm = data;
        struct device_node *np = dev->of_node;
-       struct device_node *port;
+       struct device_node *ep;
        const u8 *edidp;
        struct imx_parallel_display *imxpd;
        int ret;
@@ -230,18 +230,18 @@ static int imx_pd_bind(struct device *dev, struct device *master, void *data)
        }
 
        /* port@1 is the output port */
-       port = of_graph_get_port_by_id(np, 1);
-       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);
-                       if (remote)
-                               imxpd->panel = of_drm_find_panel(remote);
-                       if (!imxpd->panel)
-                               return -EPROBE_DEFER;
+       ep = of_graph_get_endpoint_by_regs(np, 1, -1);
+       if (ep) {
+               struct device_node *remote;
+
+               remote = of_graph_get_remote_port_parent(ep);
+               of_node_put(ep);
+               if (remote) {
+                       imxpd->panel = of_drm_find_panel(remote);
+                       of_node_put(remote);
                }
+               if (!imxpd->panel)
+                       return -EPROBE_DEFER;
        }
 
        imxpd->dev = dev;