From patchwork Thu Apr 15 13:04:35 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 422040 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER, INCLUDES_PATCH, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7D643C43460 for ; Thu, 15 Apr 2021 13:05:20 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 50CE8610CE for ; Thu, 15 Apr 2021 13:05:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233060AbhDONFm (ORCPT ); Thu, 15 Apr 2021 09:05:42 -0400 Received: from perceval.ideasonboard.com ([213.167.242.64]:46134 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233041AbhDONFk (ORCPT ); Thu, 15 Apr 2021 09:05:40 -0400 Received: from deskari.lan (91-157-208-71.elisa-laajakaista.fi [91.157.208.71]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id D7DF889D; Thu, 15 Apr 2021 15:05:15 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1618491916; bh=IBhDejbxW4aH7vQZEx3D1KVzHjbCGgtC7OrZ65SdBMA=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=qudcFmx2syuS6+YMg1/bGZcLffqeXfIvQOdTRl6SfvinMNXc/+CNm05NI1zjWdeyN +7/2jFQr95wZyi/3RCeut96iCLrTApMBD+HB5ZehZRxVudi6AlkZYYAhsYOZq5RgN7 Pfzhvj4J2Bhk4dr6GAOy5qwBZRhD/OMUHJDL4i0o= From: Tomi Valkeinen To: linux-media@vger.kernel.org, sakari.ailus@linux.intel.com, Jacopo Mondi , Laurent Pinchart , niklas.soderlund+renesas@ragnatech.se Cc: Mauro Carvalho Chehab , Hans Verkuil , Michal Simek Subject: [PATCH v5 09/24] media: entity: Add media_entity_has_route() function Date: Thu, 15 Apr 2021 16:04:35 +0300 Message-Id: <20210415130450.421168-10-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210415130450.421168-1-tomi.valkeinen@ideasonboard.com> References: <20210415130450.421168-1-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 --- 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 45c3d45bc30c..9a3587f25894 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 466e4357a082..73de1c335e4e 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -899,6 +899,23 @@ 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. *