From patchwork Tue Nov 30 14:15:13 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 12647455 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 394EDC433EF for ; Tue, 30 Nov 2021 14:17:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242148AbhK3OUV (ORCPT ); Tue, 30 Nov 2021 09:20:21 -0500 Received: from perceval.ideasonboard.com ([213.167.242.64]:41004 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242139AbhK3OUG (ORCPT ); Tue, 30 Nov 2021 09:20:06 -0500 Received: from deskari.lan (91-156-85-209.elisa-laajakaista.fi [91.156.85.209]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id 682CD3527; Tue, 30 Nov 2021 15:16:44 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1638281805; bh=WfNNqbtlD9WLVh/jXPaVCZ6hgKEw1491aKMzPa4gO1I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=WLTx0JLBuf43k3JLYx+o4BeoUWJOBUHDjYb9NXQCPAzFSNndprJXU9YMG3SCnZudr x01rnBrxqouHKBXEbTWYOWm3dovhneTfs5mur80+AyD9V7tAG26JGYQj8ihUOHAoKX nZNI1OG7mTqnMEO3rjjG31ZRNiuh5wSEppgJpMBo= From: Tomi Valkeinen To: linux-media@vger.kernel.org, sakari.ailus@linux.intel.com, Jacopo Mondi , Laurent Pinchart , niklas.soderlund+renesas@ragnatech.se, Mauro Carvalho Chehab , Hans Verkuil , Pratyush Yadav Cc: Tomi Valkeinen , Michal Simek Subject: [PATCH v10 15/38] media: entity: Add media_entity_has_route() function Date: Tue, 30 Nov 2021 16:15:13 +0200 Message-Id: <20211130141536.891878-16-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211130141536.891878-1-tomi.valkeinen@ideasonboard.com> References: <20211130141536.891878-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org 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: Jacopo Mondi Signed-off-by: Tomi Valkeinen --- drivers/media/mc/mc-entity.c | 19 +++++++++++++++++++ include/media/media-entity.h | 17 +++++++++++++++++ 2 files changed, 36 insertions(+) diff --git a/drivers/media/mc/mc-entity.c b/drivers/media/mc/mc-entity.c index b44ab423b49b..a83f004efd37 100644 --- a/drivers/media/mc/mc-entity.c +++ b/drivers/media/mc/mc-entity.c @@ -229,6 +229,25 @@ 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; + + if (entity->pads[pad1].index < entity->pads[pad0].index) + swap(pad0, pad1); + + return entity->ops->has_route(entity, pad0, pad1); +} +EXPORT_SYMBOL_GPL(media_entity_has_route); + static struct media_pad * media_pad_other(struct media_pad *pad, struct media_link *link) { diff --git a/include/media/media-entity.h b/include/media/media-entity.h index ad4020b2df65..b3069eef7fdb 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -904,6 +904,23 @@ 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. *