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@xxxxxxxxx>
Reviewed-by: Rui Miguel Silva <rmfrfs@xxxxxxxxx>
---
Changes in v5:
- imx_media_create_fwnode_pad_link() has been moved to core as
v4l2_create_fwnode_links_to_pad().
Changes in v4:
- none
Changes in v3:
- call a local imx-media utility imx_media_create_fwnode_pad_link().
Changes in v2:
- Rename notifier_to_dev() to imx7_csi_notifier_to_dev() and remove
unnecessary inline. Suggested by Rui Silva.
---
drivers/staging/media/imx/imx7-media-csi.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index e27d8f896a62..357475de4e0c 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -196,6 +196,12 @@ struct imx7_csi {
struct completion last_eof_completion;
};
+static struct imx7_csi *
+imx7_csi_notifier_to_dev(struct v4l2_async_notifier *n)
+{
+ return container_of(n, struct imx7_csi, notifier);
+}
+
static u32 imx7_csi_reg_read(struct imx7_csi *csi, unsigned int offset)
{
return readl(csi->regbase + offset);
@@ -1203,6 +1209,20 @@ static const struct v4l2_subdev_internal_ops imx7_csi_internal_ops = {
.unregistered = imx7_csi_unregistered,
};
+static int imx7_csi_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct imx7_csi *csi = imx7_csi_notifier_to_dev(notifier);
+ struct media_pad *sink = &csi->sd.entity.pads[IMX7_CSI_PAD_SINK];
+
+ return v4l2_create_fwnode_links_to_pad(sd, sink);
+}
+
+static const struct v4l2_async_notifier_operations imx7_csi_notify_ops = {
+ .bound = imx7_csi_notify_bound,
+};
+
static int imx7_csi_async_register(struct imx7_csi *csi)
{
struct v4l2_async_subdev *asd = NULL;
@@ -1233,6 +1253,8 @@ static int imx7_csi_async_register(struct imx7_csi *csi)
}
}
+ csi->notifier.ops = &imx7_csi_notify_ops;
+
ret = v4l2_async_subdev_notifier_register(&csi->sd, &csi->notifier);
if (ret)
return ret;
--
2.17.1
