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Subject: media: Accept non-subdev sinks in v4l2_create_fwnode_links_to_pad()
Author: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Date: Fri Mar 24 12:35:29 2023 +0200
The v4l2_create_fwnode_links_to_pad() helper requires the sink pad
passed to it to belong to a subdev. This requirement can be lifted
easily. Make the function usable for non-subdev sinks, which allows
using it with video_device sinks.
Signed-off-by: Laurent Pinchart <laurent.pinch...@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ai...@linux.intel.com>
Signed-off-by: Hans Verkuil <hverkuil-ci...@xs4all.nl>
drivers/media/v4l2-core/v4l2-mc.c | 15 ++++++---------
include/media/v4l2-mc.h | 8 ++++----
2 files changed, 10 insertions(+), 13 deletions(-)
---
diff --git a/drivers/media/v4l2-core/v4l2-mc.c
b/drivers/media/v4l2-core/v4l2-mc.c
index b01474717dca..bf0c18100664 100644
--- a/drivers/media/v4l2-core/v4l2-mc.c
+++ b/drivers/media/v4l2-core/v4l2-mc.c
@@ -313,14 +313,11 @@ int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev
*src_sd,
struct media_pad *sink, u32 flags)
{
struct fwnode_handle *endpoint;
- struct v4l2_subdev *sink_sd;
if (!(sink->flags & MEDIA_PAD_FL_SINK) ||
!is_media_entity_v4l2_subdev(sink->entity))
return -EINVAL;
- sink_sd = media_entity_to_v4l2_subdev(sink->entity);
-
fwnode_graph_for_each_endpoint(dev_fwnode(src_sd->dev), endpoint) {
struct fwnode_handle *remote_ep;
int src_idx, sink_idx, ret;
@@ -340,7 +337,7 @@ int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev
*src_sd,
* ask the sink to verify it owns the remote endpoint,
* and translate to a sink pad.
*/
- sink_idx = media_entity_get_fwnode_pad(&sink_sd->entity,
+ sink_idx = media_entity_get_fwnode_pad(sink->entity,
remote_ep,
MEDIA_PAD_FL_SINK);
fwnode_handle_put(remote_ep);
@@ -362,17 +359,17 @@ int v4l2_create_fwnode_links_to_pad(struct v4l2_subdev
*src_sd,
if (media_entity_find_link(src, sink))
continue;
- dev_dbg(sink_sd->dev, "creating link %s:%d -> %s:%d\n",
+ dev_dbg(src_sd->dev, "creating link %s:%d -> %s:%d\n",
src_sd->entity.name, src_idx,
- sink_sd->entity.name, sink_idx);
+ sink->entity->name, sink_idx);
ret = media_create_pad_link(&src_sd->entity, src_idx,
- &sink_sd->entity, sink_idx, flags);
+ sink->entity, sink_idx, flags);
if (ret) {
- dev_err(sink_sd->dev,
+ dev_err(src_sd->dev,
"link %s:%d -> %s:%d failed with %d\n",
src_sd->entity.name, src_idx,
- sink_sd->entity.name, sink_idx, ret);
+ sink->entity->name, sink_idx, ret);
fwnode_handle_put(endpoint);
return ret;
diff --git a/include/media/v4l2-mc.h b/include/media/v4l2-mc.h
index c181685923d5..b39586dfba35 100644
--- a/include/media/v4l2-mc.h
+++ b/include/media/v4l2-mc.h
@@ -87,17 +87,17 @@ int v4l_vb2q_enable_media_source(struct vb2_queue *q);
/**
* v4l2_create_fwnode_links_to_pad - Create fwnode-based links from a
- * source subdev to a sink subdev pad.
+ * source subdev to a sink pad.
*
* @src_sd: pointer to a source subdev
- * @sink: pointer to a subdev sink pad
+ * @sink: pointer to a sink pad
* @flags: the link flags
*
* This function searches for fwnode endpoint connections from a source
* subdevice to a single sink pad, and if suitable connections are found,
* translates them into media links to that pad. The function can be
- * called by the sink subdevice, in its v4l2-async notifier subdev bound
- * callback, to create links from a bound source subdevice.
+ * called by the sink, in its v4l2-async notifier bound callback, to create
+ * links from a bound source subdevice.
*
* The @flags argument specifies the link flags. The caller shall ensure that
* the flags are valid regardless of the number of links that may be created.
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