This is the preferred way to parse the endpoints.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-fwnode.c | 51 +++++++++++++++++++++++++++++++++++
include/media/v4l2-fwnode.h | 7 +++++
2 files changed, 58 insertions(+)
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
index cb0fc4b4e3bf..961bcdf22d9a 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -508,6 +508,57 @@ int v4l2_fwnode_endpoints_parse(
}
EXPORT_SYMBOL_GPL(v4l2_fwnode_endpoints_parse);
+/**
+ * v4l2_fwnode_endpoint_parse - Parse V4L2 fwnode endpoints in a port node
+ * @dev: local struct device
+ * @notifier: async notifier related to @dev
+ * @port: port number
+ * @endpoint: endpoint number
+ * @asd_struct_size: size of the driver's async sub-device struct, including
+ * sizeof(struct v4l2_async_subdev)
+ * @parse_single: driver's callback function called on each V4L2 fwnode endpoint
+ *
+ * Parse all V4L2 fwnode endpoints related to a given port. This is
+ * the preferred interface over v4l2_fwnode_endpoints_parse() and
+ * should be used by new drivers.
+ */
+int v4l2_fwnode_endpoint_parse_port(
+ struct device *dev, struct v4l2_async_notifier *notifier,
+ unsigned int port, unsigned int endpoint, size_t asd_struct_size,
+ int (*parse_single)(struct device *dev,
+ struct v4l2_fwnode_endpoint *vep,
+ struct v4l2_async_subdev *asd))
+{
+ struct fwnode_handle *fwnode;
+ struct v4l2_async_subdev *asd;
+ int ret;
+
+ fwnode = fwnode_graph_get_remote_node(dev_fwnode(dev), port, endpoint);
+ if (!fwnode)
+ return -ENOENT;
+
+ asd = devm_kzalloc(dev, asd_struct_size, GFP_KERNEL);
+ if (!asd)
+ return -ENOMEM;
+
+ ret = notifier_realloc(dev, notifier, notifier->num_subdevs + 1);
+ if (ret)
+ goto out_free;
+
+ ret = __v4l2_fwnode_endpoint_parse(dev, notifier, fwnode, asd,
+ parse_single);
+ if (ret)
+ goto out_free;
+
+ return 0;
+
+out_free:
+ devm_kfree(dev, asd);
+
+ return ret;
+}
+EXPORT_SYMBOL_GPL(v4l2_fwnode_endpoint_parse_port);
+
MODULE_LICENSE("GPL");
MODULE_AUTHOR("Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>");
MODULE_AUTHOR("Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>");
diff --git a/include/media/v4l2-fwnode.h b/include/media/v4l2-fwnode.h
index c75a768d4ef7..5adf28e7b070 100644
--- a/include/media/v4l2-fwnode.h
+++ b/include/media/v4l2-fwnode.h
@@ -131,4 +131,11 @@ int v4l2_fwnode_endpoints_parse(
struct v4l2_fwnode_endpoint *vep,
struct v4l2_async_subdev *asd));
+int v4l2_fwnode_endpoint_parse_port(
+ struct device *dev, struct v4l2_async_notifier *notifier,
+ unsigned int port, unsigned int endpoint, size_t asd_struct_size,
+ int (*parse_single)(struct device *dev,
+ struct v4l2_fwnode_endpoint *vep,
+ struct v4l2_async_subdev *asd));
+
#endif /* _V4L2_FWNODE_H */
--
2.11.0
--
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