From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp-4.sys.kth.se ([130.237.48.193]:33394 "EHLO smtp-4.sys.kth.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965294AbcKLNNk (ORCPT ); Sat, 12 Nov 2016 08:13:40 -0500 From: =?UTF-8?q?Niklas=20S=C3=B6derlund?= To: Laurent Pinchart , Hans Verkuil Cc: linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org, tomoharu.fukawa.eb@renesas.com, Sakari Ailus , Geert Uytterhoeven , Michal Simek , =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCHv2 02/32] media: entity: Add media_entity_has_route() function Date: Sat, 12 Nov 2016 14:11:46 +0100 Message-Id: <20161112131216.22635-3-niklas.soderlund+renesas@ragnatech.se> In-Reply-To: <20161112131216.22635-1-niklas.soderlund+renesas@ragnatech.se> References: <20161112131216.22635-1-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 Signed-off-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 c68239e..58d9fa6 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -242,6 +242,22 @@ 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_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..01e2876 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -834,6 +834,23 @@ __must_check int media_entity_graph_walk_init( struct media_entity_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_entity_graph_walk_cleanup - Release resources used by graph walk. * * @graph: Media graph structure that will be used to walk the graph -- 2.10.2