From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= To: Laurent Pinchart , Sakari Ailus , Benoit Parrot , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org, Michal Simek Subject: [PATCH v2 08/30] media: entity: Add media_has_route() function Date: Fri, 2 Nov 2018 00:31:22 +0100 Message-Id: <20181101233144.31507-9-niklas.soderlund+renesas@ragnatech.se> In-Reply-To: <20181101233144.31507-1-niklas.soderlund+renesas@ragnatech.se> References: <20181101233144.31507-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-media-owner@vger.kernel.org List-ID: From: Laurent Pinchart This is a wrapper around the media entity has_route operation. Signed-off-by: Laurent Pinchart Signed-off-by: Michal Simek Signed-off-by: Sakari Ailus Reviewed-by: Niklas Söderlund --- drivers/media/media-entity.c | 16 ++++++++++++++++ include/media/media-entity.h | 17 +++++++++++++++++ 2 files changed, 33 insertions(+) diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index f2fa0b7826dbc2f3..3c0e7425c8983b45 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -237,6 +237,22 @@ EXPORT_SYMBOL_GPL(media_entity_pads_init); * Graph traversal */ +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_pad * media_entity_other(struct media_pad *pad, struct media_link *link) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index cd482814654616b5..9540d2af80f19805 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -919,6 +919,23 @@ int media_entity_get_fwnode_pad(struct media_entity *entity, __must_check int media_graph_walk_init( struct media_graph *graph, struct media_device *mdev); +/** + * 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->graph_obj.mdev->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); + /** * media_graph_walk_cleanup - Release resources used by graph walk. * -- 2.19.1