From patchwork Thu Nov 1 23:31:26 2018 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: 10664733 X-Patchwork-Delegate: geert@linux-m68k.org Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7DCAD3E9D for ; Thu, 1 Nov 2018 23:33:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 71CC02C43C for ; Thu, 1 Nov 2018 23:33:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 665422C599; Thu, 1 Nov 2018 23:33:05 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, 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 1CEB72C4D2 for ; Thu, 1 Nov 2018 23:33:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728314AbeKBIiI (ORCPT ); Fri, 2 Nov 2018 04:38:08 -0400 Received: from bin-mail-out-05.binero.net ([195.74.38.228]:40052 "EHLO bin-mail-out-05.binero.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728283AbeKBIiI (ORCPT ); Fri, 2 Nov 2018 04:38:08 -0400 X-Halon-ID: 744c1648-de2e-11e8-9adf-005056917a89 Authorized-sender: niklas@soderlund.pp.se Received: from bismarck.berto.se (unknown [89.233.230.99]) by bin-vsp-out-01.atm.binero.net (Halon) with ESMTPA id 744c1648-de2e-11e8-9adf-005056917a89; Fri, 02 Nov 2018 00:32:53 +0100 (CET) From: =?utf-8?q?Niklas_S=C3=B6derlund?= To: Laurent Pinchart , Sakari Ailus , Benoit Parrot , linux-media@vger.kernel.org Cc: linux-renesas-soc@vger.kernel.org Subject: [PATCH v2 12/30] media: entity: Add an iterator helper for connected pads Date: Fri, 2 Nov 2018 00:31:26 +0100 Message-Id: <20181101233144.31507-13-niklas.soderlund+renesas@ragnatech.se> X-Mailer: git-send-email 2.19.1 In-Reply-To: <20181101233144.31507-1-niklas.soderlund+renesas@ragnatech.se> References: <20181101233144.31507-1-niklas.soderlund+renesas@ragnatech.se> MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Sakari Ailus Add a helper macro for iterating over pads that are connected through enabled routes. This can be used to find all the connected pads within an entity, for instance starting from the pad which has been obtained during the graph walk. Signed-off-by: Sakari Ailus Reviewed-by: Niklas Söderlund --- include/media/media-entity.h | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 9540d2af80f19805..4bb1b568e1ac4795 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -936,6 +936,33 @@ __must_check int media_graph_walk_init( bool media_entity_has_route(struct media_entity *entity, unsigned int pad0, unsigned int pad1); +static inline struct media_pad *__media_entity_for_routed_pads_next( + struct media_pad *start, struct media_pad *iter) +{ + struct media_entity *entity = start->entity; + + while (iter < &entity->pads[entity->num_pads] && + !media_entity_has_route(entity, start->index, iter->index)) + iter++; + + return iter; +} + +/** + * media_entity_for_routed_pads - Iterate over entity pads connected by routes + * + * @start: The stating pad + * @iter: The iterator pad + * + * Iterate over all pads connected through routes from a given pad + * within an entity. The iteration will include the starting pad itself. + */ +#define media_entity_for_routed_pads(start, iter) \ + for (iter = __media_entity_for_routed_pads_next( \ + start, (start)->entity->pads); \ + iter < &(start)->entity->pads[(start)->entity->num_pads]; \ + iter = __media_entity_for_routed_pads_next(start, iter + 1)) + /** * media_graph_walk_cleanup - Release resources used by graph walk. *