From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp-4.sys.kth.se ([130.237.48.193]:49437 "EHLO smtp-4.sys.kth.se" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752795AbcKBN3g (ORCPT ); Wed, 2 Nov 2016 09:29:36 -0400 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 , Michal Simek , =?UTF-8?q?Niklas=20S=C3=B6derlund?= Subject: [PATCH 02/32] media: entity: Add media_entity_has_route() function Date: Wed, 2 Nov 2016 14:22:59 +0100 Message-Id: <20161102132329.436-3-niklas.soderlund+renesas@ragnatech.se> In-Reply-To: <20161102132329.436-1-niklas.soderlund+renesas@ragnatech.se> References: <20161102132329.436-1-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: Niklas Söderlund --- 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