From: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
V4L2 async framework can use both device's fwnode and endpoints's fwnode
for matching the async sub-device with the sub-device. In order to proceed
moving towards endpoint matching assign the endpoint to the async
sub-device.
As most async sub-device drivers (and the related hardware) only supports
a single endpoint, use the first endpoint found. This works for all
current drivers --- we only ever supported a single async sub-device per
device to begin with.
For async devices that have no endpoints, continue to use the fwnode
related to the device. This includes e.g. lens devices.
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx>
---
drivers/media/v4l2-core/v4l2-async.c | 8 ++++++--
drivers/media/v4l2-core/v4l2-fwnode.c | 2 +-
2 files changed, 7 insertions(+), 3 deletions(-)
diff --git a/drivers/media/v4l2-core/v4l2-async.c b/drivers/media/v4l2-core/v4l2-async.c
index e3ab003a6c851881..f3b0338718e0f0a9 100644
--- a/drivers/media/v4l2-core/v4l2-async.c
+++ b/drivers/media/v4l2-core/v4l2-async.c
@@ -758,8 +758,12 @@ int v4l2_async_register_subdev(struct v4l2_subdev *sd)
* (struct v4l2_subdev.dev), and async sub-device does not
* exist independently of the device at any point of time.
*/
- if (!sd->fwnode && sd->dev)
- sd->fwnode = dev_fwnode(sd->dev);
+ if (!sd->fwnode && sd->dev) {
+ sd->fwnode = fwnode_graph_get_next_endpoint(
+ dev_fwnode(sd->dev), NULL);
+ if (!sd->fwnode)
+ sd->fwnode = dev_fwnode(sd->dev);
+ }
mutex_lock(&list_lock);
diff --git a/drivers/media/v4l2-core/v4l2-fwnode.c b/drivers/media/v4l2-core/v4l2-fwnode.c
index a4c3c77c1894648e..79706129e28b668a 100644
--- a/drivers/media/v4l2-core/v4l2-fwnode.c
+++ b/drivers/media/v4l2-core/v4l2-fwnode.c
@@ -815,7 +815,7 @@ v4l2_async_notifier_fwnode_parse_endpoint(struct device *dev,
asd->match_type = V4L2_ASYNC_MATCH_FWNODE;
asd->match.fwnode =
- fwnode_graph_get_remote_port_parent(endpoint);
+ fwnode_graph_get_remote_endpoint(endpoint);
if (!asd->match.fwnode) {
dev_dbg(dev, "no remote endpoint found\n");
ret = -ENOTCONN;
--
2.28.0
