[PATCH v3 07/13] media: imx: csi: Register a subdev notifier

[Steve Longerbeam]

Parse neighbor remote devices on the CSI port, add them to a subdev
notifier, and register the subdev notifier for the CSI, by calling
v4l2_async_register_fwnode_subdev().

Signed-off-by: Steve Longerbeam <steve_longerb...@mentor.com>
---
 drivers/staging/media/imx/imx-media-csi.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/staging/media/imx/imx-media-csi.c 
b/drivers/staging/media/imx/imx-media-csi.c
index 5a195f8..87cf277 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -1736,6 +1736,13 @@ static const struct v4l2_subdev_internal_ops 
csi_internal_ops = {
        .unregistered = csi_unregistered,
 };
 
+static int imx_csi_parse_endpoint(struct device *dev,
+                                 struct v4l2_fwnode_endpoint *vep,
+                                 struct v4l2_async_subdev *asd)
+{
+       return fwnode_device_is_available(asd->match.fwnode) ? 0 : -EINVAL;
+}
+
 static int imx_csi_probe(struct platform_device *pdev)
 {
        struct ipu_client_platformdata *pdata;
@@ -1802,7 +1809,9 @@ static int imx_csi_probe(struct platform_device *pdev)
                goto free;
        }
 
-       ret = v4l2_async_register_subdev(&priv->sd);
+       ret = v4l2_async_register_fwnode_subdev(
+               &priv->sd, sizeof(struct v4l2_async_subdev),
+               NULL, 0, imx_csi_parse_endpoint);
        if (ret)
                goto free;
 
-- 
2.7.4