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>
---
drivers/staging/media/imx/imx7-media-csi.c | 24 ++++++++++++++++++++++
1 file changed, 24 insertions(+)
diff --git a/drivers/staging/media/imx/imx7-media-csi.c b/drivers/staging/media/imx/imx7-media-csi.c
index a1c96c52a606..f71ac485f780 100644
--- a/drivers/staging/media/imx/imx7-media-csi.c
+++ b/drivers/staging/media/imx/imx7-media-csi.c
@@ -196,6 +196,11 @@ struct imx7_csi {
struct completion last_eof_completion;
};
+static inline struct 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);
@@ -1173,6 +1178,23 @@ static int imx7_csi_parse_endpoint(struct device *dev,
return fwnode_device_is_available(asd->match.fwnode) ? 0 : -EINVAL;
}
+static int imx7_csi_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct imx7_csi *csi = notifier_to_dev(notifier);
+ struct media_pad *sink = &csi->sd.entity.pads[IMX7_CSI_PAD_SINK];
+
+ return media_create_fwnode_pad_links(sink,
+ dev_fwnode(csi->sd.dev),
+ &sd->entity,
+ dev_fwnode(sd->dev), 0);
+}
+
+static const struct v4l2_async_notifier_operations imx7_csi_notify_ops = {
+ .bound = imx7_csi_notify_bound,
+};
+
static int imx7_csi_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
@@ -1253,6 +1275,8 @@ static int imx7_csi_probe(struct platform_device *pdev)
v4l2_async_notifier_init(&csi->notifier);
+ csi->notifier.ops = &imx7_csi_notify_ops;
+
ret = v4l2_async_register_fwnode_subdev(&csi->sd, &csi->notifier,
sizeof(struct v4l2_async_subdev),
NULL, 0,
--
2.17.1
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