[PATCH 13/22] media: imx: mipi csi-2: Create media links in bound notifier
From: Steve Longerbeam <slongerbeam@gmail.com>
Date: 2019-08-05 23:36:21
Also in:
linux-media, lkml
Subsystem:
media drivers for freescale imx, media input infrastructure (v4l/dvb), staging subsystem, the rest · Maintainers:
Steve Longerbeam, Philipp Zabel, Mauro Carvalho Chehab, Greg Kroah-Hartman, Linus Torvalds
Implement a notifier bound op to register media links from the remote sub-device's source pad(s) to the mipi csi-2 receiver sink pad. Signed-off-by: Steve Longerbeam <slongerbeam@gmail.com> --- drivers/staging/media/imx/imx6-mipi-csi2.c | 24 ++++++++++++++++++++++ 1 file changed, 24 insertions(+)
diff --git a/drivers/staging/media/imx/imx6-mipi-csi2.c b/drivers/staging/media/imx/imx6-mipi-csi2.c
index 408ee2765e77..5b2258156781 100644
--- a/drivers/staging/media/imx/imx6-mipi-csi2.c
+++ b/drivers/staging/media/imx/imx6-mipi-csi2.c@@ -91,6 +91,11 @@ static inline struct csi2_dev *sd_to_dev(struct v4l2_subdev *sdev) return container_of(sdev, struct csi2_dev, sd); } +static inline struct csi2_dev *notifier_to_dev(struct v4l2_async_notifier *n) +{ + return container_of(n, struct csi2_dev, notifier); +} + /* * The required sequence of MIPI CSI-2 startup as specified in the i.MX6 * reference manual is as follows:
@@ -573,6 +578,23 @@ static int csi2_parse_endpoint(struct device *dev, return 0; } +static int csi2_notify_bound(struct v4l2_async_notifier *notifier, + struct v4l2_subdev *sd, + struct v4l2_async_subdev *asd) +{ + struct csi2_dev *csi2 = notifier_to_dev(notifier); + struct media_pad *sink = &csi2->sd.entity.pads[CSI2_SINK_PAD]; + + return media_create_fwnode_pad_links(sink, + dev_fwnode(csi2->dev), + &sd->entity, + dev_fwnode(sd->dev), 0); +} + +static const struct v4l2_async_notifier_operations csi2_notify_ops = { + .bound = csi2_notify_bound, +}; + static int csi2_probe(struct platform_device *pdev) { unsigned int sink_port = 0;
@@ -646,6 +668,8 @@ static int csi2_probe(struct platform_device *pdev) v4l2_async_notifier_init(&csi2->notifier); + csi2->notifier.ops = &csi2_notify_ops; + ret = v4l2_async_register_fwnode_subdev( &csi2->sd, &csi2->notifier, sizeof(struct v4l2_async_subdev), &sink_port, 1, csi2_parse_endpoint);
--
2.17.1
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