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Subject[RESEND PATCH v3 09/17] media: imx7-mipi-csis: Create media links in bound notifier
Date
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>
---
Changes in v3:
- call a local imx-media utility imx_media_create_fwnode_pad_link().
Changes in v2:
- Move notifier_to_csis_state() next to mipi_sd_to_csis_state(), remove
unnecessary inline, and rename to mipi_notifier_to_csis_state().
Suggested by Rui Silva.
---
drivers/staging/media/imx/imx7-mipi-csis.c | 22 ++++++++++++++++++++++
1 file changed, 22 insertions(+)

diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
index 4c54456318ea..d3a83577efed 100644
--- a/drivers/staging/media/imx/imx7-mipi-csis.c
+++ b/drivers/staging/media/imx/imx7-mipi-csis.c
@@ -317,6 +317,12 @@ static int mipi_csis_dump_regs(struct csi_state *state)
return 0;
}

+static struct csi_state *
+mipi_notifier_to_csis_state(struct v4l2_async_notifier *n)
+{
+ return container_of(n, struct csi_state, notifier);
+}
+
static struct csi_state *mipi_sd_to_csis_state(struct v4l2_subdev *sdev)
{
return container_of(sdev, struct csi_state, mipi_sd);
@@ -848,6 +854,20 @@ static int mipi_csis_parse_endpoint(struct device *dev,
return 0;
}

+static int mipi_csis_notify_bound(struct v4l2_async_notifier *notifier,
+ struct v4l2_subdev *sd,
+ struct v4l2_async_subdev *asd)
+{
+ struct csi_state *state = mipi_notifier_to_csis_state(notifier);
+ struct media_pad *sink = &state->mipi_sd.entity.pads[CSIS_PAD_SINK];
+
+ return imx_media_create_fwnode_pad_link(sd, sink);
+}
+
+static const struct v4l2_async_notifier_operations mipi_csis_notify_ops = {
+ .bound = mipi_csis_notify_bound,
+};
+
static int mipi_csis_subdev_init(struct v4l2_subdev *mipi_sd,
struct platform_device *pdev,
const struct v4l2_subdev_ops *ops)
@@ -886,6 +906,8 @@ static int mipi_csis_subdev_init(struct v4l2_subdev *mipi_sd,

v4l2_async_notifier_init(&state->notifier);

+ state->notifier.ops = &mipi_csis_notify_ops;
+
ret = v4l2_async_register_fwnode_subdev(mipi_sd, &state->notifier,
sizeof(struct v4l2_async_subdev),
&sink_port, 1,
--
2.17.1
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