From: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> This is a wrapper around the media entity has_route operation. Signed-off-by: Laurent Pinchart <laurent.pinchart@xxxxxxxxxxxxxxxx> Signed-off-by: Michal Simek <michal.simek@xxxxxxxxxx> Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@xxxxxxxxxxxx> --- drivers/media/media-entity.c | 29 +++++++++++++++++++++++++++++ include/media/media-entity.h | 3 +++ 2 files changed, 32 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index c68239e..4d03ea7 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -242,6 +242,35 @@ EXPORT_SYMBOL_GPL(media_entity_pads_init); * Graph traversal */ +/** + * media_entity_has_route - Check if two entity pads are connected internally + * @entity: The entity + * @pad0: The first pad index + * @pad1: The second pad index + * + * This function can be used to check whether two pads of an entity are + * connected internally in the entity. + * + * The caller must hold entity->source->parent->mutex. + * + * Return: true if the pads are connected internally and false otherwise. + */ +bool media_entity_has_route(struct media_entity *entity, unsigned int pad0, + unsigned int pad1) +{ + if (pad0 >= entity->num_pads || pad1 >= entity->num_pads) + return false; + + if (pad0 == pad1) + return true; + + if (!entity->ops || !entity->ops->has_route) + return true; + + return entity->ops->has_route(entity, pad0, pad1); +} +EXPORT_SYMBOL_GPL(media_entity_has_route); + static struct media_entity * media_entity_other(struct media_entity *entity, struct media_link *link) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 8f9fc85..5fb3f06 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -851,6 +851,9 @@ void media_entity_graph_walk_cleanup(struct media_entity_graph *graph); */ void media_entity_put(struct media_entity *entity); +bool media_entity_has_route(struct media_entity *entity, unsigned int sink, + unsigned int source); + /** * media_entity_graph_walk_start - Start walking the media graph at a * given entity -- 2.10.2