From patchwork Sat Nov 12 13:11:46 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Niklas_S=C3=B6derlund?= X-Patchwork-Id: 9424219 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AB1B460484 for ; Sat, 12 Nov 2016 13:14:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A032A28D7F for ; Sat, 12 Nov 2016 13:14:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 95309296E2; Sat, 12 Nov 2016 13:14:42 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1909E28D7F for ; Sat, 12 Nov 2016 13:14:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965716AbcKLNNm (ORCPT ); Sat, 12 Nov 2016 08:13:42 -0500 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 Received: from smtp-4.sys.kth.se (localhost.localdomain [127.0.0.1]) by smtp-4.sys.kth.se (Postfix) with ESMTP id 5241E267B; Sat, 12 Nov 2016 14:13:38 +0100 (CET) X-Virus-Scanned: by amavisd-new at kth.se Received: from smtp-4.sys.kth.se ([127.0.0.1]) by smtp-4.sys.kth.se (smtp-4.sys.kth.se [127.0.0.1]) (amavisd-new, port 10024) with LMTP id VUpKqFjetmg8; Sat, 12 Nov 2016 14:13:37 +0100 (CET) X-KTH-Auth: niso [89.233.230.99] X-KTH-mail-from: niklas.soderlund+renesas@ragnatech.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by smtp-4.sys.kth.se (Postfix) with ESMTPSA id 19A3C2431; Sat, 12 Nov 2016 14:13:37 +0100 (CET) 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> X-Mailer: git-send-email 2.10.2 In-Reply-To: <20161112131216.22635-1-niklas.soderlund+renesas@ragnatech.se> References: <20161112131216.22635-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP 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