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@xxxxxxxxx>
---
drivers/staging/media/imx/imx7-mipi-csis.c | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/drivers/staging/media/imx/imx7-mipi-csis.c b/drivers/staging/media/imx/imx7-mipi-csis.c
index f71d9183cad2..e03b2317a1ac 100644
--- a/drivers/staging/media/imx/imx7-mipi-csis.c
+++ b/drivers/staging/media/imx/imx7-mipi-csis.c
@@ -259,6 +259,12 @@ struct csi_state {
bool sink_linked;
};
+static inline struct csi_state *
+notifier_to_csis_state(struct v4l2_async_notifier *n)
+{
+ return container_of(n, struct csi_state, notifier);
+}
+
struct csis_pix_format {
unsigned int pix_width_alignment;
u32 code;
@@ -863,6 +869,23 @@ 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 = notifier_to_csis_state(notifier);
+ struct media_pad *sink = &state->mipi_sd.entity.pads[CSIS_PAD_SINK];
+
+ return media_create_fwnode_pad_links(sink,
+ dev_fwnode(state->mipi_sd.dev),
+ &sd->entity,
+ dev_fwnode(sd->dev), 0);
+}
+
+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)
@@ -895,6 +918,8 @@ 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
