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Subject[RESEND PATCH v3 13/17] media: imx: csi: Create media links in bound notifier
Date
Implement a notifier bound op to register media links from the remote
sub-device's source pad(s) to the CSI sink pad.

Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com>
---
Changes in v3:
- call a local imx-media utility imx_media_create_fwnode_pad_link().
---
drivers/staging/media/imx/imx-media-csi.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)

diff --git a/drivers/staging/media/imx/imx-media-csi.c b/drivers/staging/media/imx/imx-media-csi.c
index bea6a70cc353..2a8f01375f78 100644
--- a/drivers/staging/media/imx/imx-media-csi.c
+++ b/drivers/staging/media/imx/imx-media-csi.c
@@ -120,6 +120,11 @@ static inline struct csi_priv *sd_to_dev(struct v4l2_subdev *sdev)
return container_of(sdev, struct csi_priv, sd);
}

+static inline struct csi_priv *notifier_to_dev(struct v4l2_async_notifier *n)
+{
+ return container_of(n, struct csi_priv, notifier);
+}
+
static inline bool is_parallel_bus(struct v4l2_fwnode_endpoint *ep)
{
return ep->bus_type != V4L2_MBUS_CSI2_DPHY;
@@ -1896,6 +1901,20 @@ static int imx_csi_parse_endpoint(struct device *dev,
return fwnode_device_is_available(asd->match.fwnode) ? 0 : -ENOTCONN;
}

+static int imx_csi_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct csi_priv *priv = notifier_to_dev(notifier);
+ struct media_pad *sink = &priv->sd.entity.pads[CSI_SINK_PAD];
+
+ return imx_media_create_fwnode_pad_link(sd, sink);
+}
+
+static const struct v4l2_async_notifier_operations csi_notify_ops = {
+ .bound = imx_csi_notify_bound,
+};
+
static int imx_csi_async_register(struct csi_priv *priv)
{
struct fwnode_handle *fwnode;
@@ -1904,6 +1923,8 @@ static int imx_csi_async_register(struct csi_priv *priv)

v4l2_async_notifier_init(&priv->notifier);

+ priv->notifier.ops = &csi_notify_ops;
+
fwnode = dev_fwnode(priv->dev);

/* get this CSI's port id */
--
2.17.1
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