media: staging: media: imx: imx7-media-csi: Drop duplicate link creation

The imx_media_create_csi2_links() creates a media controller link
between the CSI-2 receiver and the next entity in the pipeline, which
can be either a video mux (handled by the video-mux driver) or the CSI
bridge itself. This isn't needed, as the link is already created either
by the video-mux driver or by the imx7-media-csi driver itself (in
imx7_csi_notify_bound()).

Drop imx_media_create_csi2_links(), which allows dropping the CSI bridge
subdev grp_id.

Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Rui Miguel Silva <rmfrfs@gmail.com>
Tested-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>

diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index 58c5647..5ab4f99 100644 (file)
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -727,34 +727,6 @@ static inline struct imx_media_dev *notifier2dev(struct v4l2_async_notifier *n)
 }
 
 /*
- * Create the missing media links from the CSI-2 receiver.
- * Called after all async subdevs have bound.
- */
-static void imx_media_create_csi2_links(struct imx_media_dev *imxmd)
-{
-       struct v4l2_subdev *sd, *csi2 = NULL;
-
-       list_for_each_entry(sd, &imxmd->v4l2_dev.subdevs, list) {
-               if (sd->grp_id == IMX_MEDIA_GRP_ID_CSI2) {
-                       csi2 = sd;
-                       break;
-               }
-       }
-       if (!csi2)
-               return;
-
-       list_for_each_entry(sd, &imxmd->v4l2_dev.subdevs, list) {
-               /* skip if not a CSI or a CSI mux */
-               if (!(sd->grp_id & IMX_MEDIA_GRP_ID_IPU_CSI) &&
-                   !(sd->grp_id & IMX_MEDIA_GRP_ID_CSI) &&
-                   !(sd->grp_id & IMX_MEDIA_GRP_ID_CSI_MUX))
-                       continue;
-
-               v4l2_create_fwnode_links(csi2, sd);
-       }
-}
-
-/*
  * adds given video device to given imx-media source pad vdev list.
  * Continues upstream from the pad entity's sink pads.
  */
@@ -883,8 +855,6 @@ static int __imx_media_probe_complete(struct v4l2_async_notifier *notifier)
 
        mutex_lock(&imxmd->mutex);
 
-       imx_media_create_csi2_links(imxmd);
-
        ret = imx_media_create_pad_vdev_lists(imxmd);
        if (ret)
                goto unlock;
@@ -1480,7 +1450,6 @@ static int imx7_csi_probe(struct platform_device *pdev)
        csi->sd.dev = &pdev->dev;
        csi->sd.owner = THIS_MODULE;
        csi->sd.flags = V4L2_SUBDEV_FL_HAS_DEVNODE;
-       csi->sd.grp_id = IMX_MEDIA_GRP_ID_CSI;
        snprintf(csi->sd.name, sizeof(csi->sd.name), "csi");
 
        for (i = 0; i < IMX7_CSI_PADS_NUM; i++)