media: imx: imx7_mipi_csis: Ensure pads are connected

The CSI-2 receiver requires both its sink pad and its source pad to be
connected through enabled links in order to be started. Ensure this by
setting the MEDIA_PAD_FL_MUST_CONNECT flag on both pads.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
index 21774f3e66e009205982e6f61262af2bb843d353..025fdc488bd663355dcf6e441fee12769883a35b 100644 (file)
--- a/drivers/staging/media/imx/imx7-mipi-csis.c
+++ b/drivers/staging/media/imx/imx7-mipi-csis.c
@@ -1065,8 +1065,10 @@ static int mipi_csis_subdev_init(struct v4l2_subdev *mipi_sd,
 
        v4l2_set_subdevdata(mipi_sd, &pdev->dev);
 
-       state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
-       state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+       state->pads[CSIS_PAD_SINK].flags = MEDIA_PAD_FL_SINK
+                                        | MEDIA_PAD_FL_MUST_CONNECT;
+       state->pads[CSIS_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE
+                                          | MEDIA_PAD_FL_MUST_CONNECT;
        return media_entity_pads_init(&mipi_sd->entity, CSIS_PADS_NUM,
                                      state->pads);
 }