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media: imx7: csi: Create media links in bound notifier

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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>
Reviewed-by: Rui Miguel Silva <rmfrfs@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
This commit is contained in:
Steve Longerbeam
2020-05-01 19:15:49 +02:00
committed by Mauro Carvalho Chehab
parent 6e996653e7
commit 94b99296f3
1 changed files with 22 additions and 0 deletions
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22
drivers/staging/media/imx/imx7-media-csi.c
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@@ -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);
@@ -1204,6 +1210,20 @@ 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;
@@ -1234,6 +1254,8 @@ 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;