imx-drm: imx-drm-core: Fix imx_drm_encoder_get_mux_id

The decoder mux id is equal to the port id of the encoder's input port
that is connected to the given crtc, not to the endpoint id (which is
arbitrary and usually zero).

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Tested-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/imx-drm/imx-drm-core.c b/drivers/staging/imx-drm/imx-drm-core.c
index 4144a75e5f71bc6258d9d8dcdc1a02b3b2a2f035..bc7f8bd227c7186a2e054d82a19c75ebcd72ea4a 100644 (file)
--- a/drivers/staging/imx-drm/imx-drm-core.c
+++ b/drivers/staging/imx-drm/imx-drm-core.c
@@ -517,7 +517,7 @@ int imx_drm_encoder_get_mux_id(struct device_node *node,
                of_node_put(port);
                if (port == imx_crtc->port) {
                        ret = of_graph_parse_endpoint(ep, &endpoint);
-                       return ret ? ret : endpoint.id;
+                       return ret ? ret : endpoint.port;
                }
        } while (ep);