From patchwork Wed Aug 31 14:13:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Tomi Valkeinen X-Patchwork-Id: 601727 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 A1704C0502A for ; Wed, 31 Aug 2022 14:16:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232112AbiHaOQ3 (ORCPT ); Wed, 31 Aug 2022 10:16:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59336 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232145AbiHaOQA (ORCPT ); Wed, 31 Aug 2022 10:16:00 -0400 Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 518C370E45 for ; Wed, 31 Aug 2022 07:15:26 -0700 (PDT) Received: from deskari.lan (91-158-154-79.elisa-laajakaista.fi [91.158.154.79]) by perceval.ideasonboard.com (Postfix) with ESMTPSA id F0BA82D1F; Wed, 31 Aug 2022 16:14:32 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1661955273; bh=9hrpt+sZa6ji42yLKgt41CLifp1cCBhca2JHoJHybsw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=NJVPKVi0Rjn8Smyc4m2A79wUw15Cws0zaoMqybxqA3bslQxxo+JliI8HtKQepyKfw QdeWkMpRKhUnw3Wm7TZCXG5EgkGDgrHKPANGOYT8VIbEbYSiBURZAPPxCyPdI8DvcG mEmj/0Y/EDSBcnF4pxZKAuL4OA+g2a8mJ1h96VLc= 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 , Kishon Vijay Abraham , satish.nagireddy@getcruise.com, Tomasz Figa Cc: Tomi Valkeinen Subject: [PATCH v14 21/34] media: subdev: add v4l2_subdev_has_pad_interdep() Date: Wed, 31 Aug 2022 17:13:44 +0300 Message-Id: <20220831141357.1396081-22-tomi.valkeinen@ideasonboard.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220831141357.1396081-1-tomi.valkeinen@ideasonboard.com> References: <20220831141357.1396081-1-tomi.valkeinen@ideasonboard.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org Add a v4l2_subdev_has_pad_interdep() helper function which can be used for media_entity_operations.has_pad_interdep op. It considers two pads interdependent if there is an active route between pad0 and pad1. Signed-off-by: Tomi Valkeinen --- drivers/media/v4l2-core/v4l2-subdev.c | 31 +++++++++++++++++++++++++++ include/media/v4l2-subdev.h | 17 +++++++++++++++ 2 files changed, 48 insertions(+) diff --git a/drivers/media/v4l2-core/v4l2-subdev.c b/drivers/media/v4l2-core/v4l2-subdev.c index af1f53d99507..1ce9a7dc0c6e 100644 --- a/drivers/media/v4l2-core/v4l2-subdev.c +++ b/drivers/media/v4l2-core/v4l2-subdev.c @@ -1045,6 +1045,37 @@ int v4l2_subdev_link_validate(struct media_link *link) } EXPORT_SYMBOL_GPL(v4l2_subdev_link_validate); +bool v4l2_subdev_has_pad_interdep(struct media_entity *entity, + unsigned int pad0, unsigned int pad1) +{ + struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); + struct v4l2_subdev_krouting *routing; + unsigned int i; + struct v4l2_subdev_state *state; + + state = v4l2_subdev_lock_and_get_active_state(sd); + + routing = &state->routing; + + for (i = 0; i < routing->num_routes; ++i) { + struct v4l2_subdev_route *route = &routing->routes[i]; + + if (!(route->flags & V4L2_SUBDEV_ROUTE_FL_ACTIVE)) + continue; + + if ((route->sink_pad == pad0 && route->source_pad == pad1) || + (route->source_pad == pad0 && route->sink_pad == pad1)) { + v4l2_subdev_unlock_state(state); + return true; + } + } + + v4l2_subdev_unlock_state(state); + + return false; +} +EXPORT_SYMBOL_GPL(v4l2_subdev_has_pad_interdep); + struct v4l2_subdev_state * __v4l2_subdev_state_alloc(struct v4l2_subdev *sd, const char *lock_name, struct lock_class_key *lock_key) diff --git a/include/media/v4l2-subdev.h b/include/media/v4l2-subdev.h index f38943932cfe..2d1509556ce0 100644 --- a/include/media/v4l2-subdev.h +++ b/include/media/v4l2-subdev.h @@ -1235,6 +1235,23 @@ int v4l2_subdev_link_validate_default(struct v4l2_subdev *sd, */ int v4l2_subdev_link_validate(struct media_link *link); +/** + * v4l2_subdev_has_pad_interdep - MC has_pad_interdep implementation for subdevs + * + * @entity: pointer to &struct media_entity + * @pad0: pad number for the first pad + * @pad1: pad number for the second pad + * + * This function is an implementation of the media_entity_operations.has_pad_interdep + * operation for subdevs that implement the multiplexed streams API (as + * indicated by the V4L2_SUBDEV_FL_STREAMS subdev flag). + * + * It considers two pads interdependent if there is an active route between pad0 + * and pad1. + */ +bool v4l2_subdev_has_pad_interdep(struct media_entity *entity, + unsigned int pad0, unsigned int pad1); + /** * __v4l2_subdev_state_alloc - allocate v4l2_subdev_state *