[PATCH v7 09/13] media: cadence: csi2rx: Add link validation

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From: Pratyush Yadav <p.yadav@xxxxxx>

Add media link validation to make sure incorrectly configured pipelines
are caught.

Signed-off-by: Pratyush Yadav <p.yadav@xxxxxx>
Signed-off-by: Vaishnav Achath <vaishnav.a@xxxxxx>
Reviewed-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx>
---

(no changes since v6)

Changes in v6:
- Drop transcoding from the commit message.
- Make csi2rx_media_ops const.
- Add Laurent's R-by.

Changes in v5:
- New in v5.

 drivers/media/platform/cadence/cdns-csi2rx.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/media/platform/cadence/cdns-csi2rx.c b/drivers/media/platform/cadence/cdns-csi2rx.c
index 639ade97b998..026d95d60654 100644
--- a/drivers/media/platform/cadence/cdns-csi2rx.c
+++ b/drivers/media/platform/cadence/cdns-csi2rx.c
@@ -478,6 +478,10 @@ static const struct v4l2_subdev_ops csi2rx_subdev_ops = {
 	.pad		= &csi2rx_pad_ops,
 };
 
+static const struct media_entity_operations csi2rx_media_ops = {
+	.link_validate = v4l2_subdev_link_validate,
+};
+
 static int csi2rx_async_bound(struct v4l2_async_notifier *notifier,
 			      struct v4l2_subdev *s_subdev,
 			      struct v4l2_async_subdev *asd)
@@ -677,6 +681,7 @@ static int csi2rx_probe(struct platform_device *pdev)
 	for (i = CSI2RX_PAD_SOURCE_STREAM0; i < CSI2RX_PAD_MAX; i++)
 		csi2rx->pads[i].flags = MEDIA_PAD_FL_SOURCE;
 	csi2rx->subdev.flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+	csi2rx->subdev.entity.ops = &csi2rx_media_ops;
 
 	ret = media_entity_pads_init(&csi2rx->subdev.entity, CSI2RX_PAD_MAX,
 				     csi2rx->pads);
-- 
2.17.1




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