From patchwork Tue Mar 5 18:51:23 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Jacopo Mondi X-Patchwork-Id: 10839899 X-Patchwork-Delegate: kieran@bingham.xyz 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 8ED311803 for ; Tue, 5 Mar 2019 18:51:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 7C12F2CA84 for ; Tue, 5 Mar 2019 18:51:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 706F62CA98; Tue, 5 Mar 2019 18:51:38 +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=ham 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 030A42CA84 for ; Tue, 5 Mar 2019 18:51:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727826AbfCESvh (ORCPT ); Tue, 5 Mar 2019 13:51:37 -0500 Received: from relay12.mail.gandi.net ([217.70.178.232]:46799 "EHLO relay12.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727312AbfCESvh (ORCPT ); Tue, 5 Mar 2019 13:51:37 -0500 Received: from uno.lan (2-224-242-101.ip172.fastwebnet.it [2.224.242.101]) (Authenticated sender: jacopo@jmondi.org) by relay12.mail.gandi.net (Postfix) with ESMTPSA id 1789520000F; Tue, 5 Mar 2019 18:51:33 +0000 (UTC) From: Jacopo Mondi To: sakari.ailus@linux.intel.com, laurent.pinchart@ideasonboard.com, niklas.soderlund+renesas@ragnatech.se Cc: Jacopo Mondi , linux-media@vger.kernel.org, linux-renesas-soc@vger.kernel.org Subject: [PATCH v3 04/31] v4l: mc: Start walk from a specific pad in use count calculation Date: Tue, 5 Mar 2019 19:51:23 +0100 Message-Id: <20190305185150.20776-5-jacopo+renesas@jmondi.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190305185150.20776-1-jacopo+renesas@jmondi.org> References: <20190305185150.20776-1-jacopo+renesas@jmondi.org> 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 With the addition of the recent has_route() media entity op, the pads of a media entity are no longer all interconnected. This has to be taken into account in power management. Prepare for the addition of a helper function supporting S_ROUTING. Signed-off-by: Sakari Ailus Reviewed-by: Niklas Söderlund Reviewed-by: Laurent Pinchart Signed-off-by: Jacopo Mondi --- drivers/media/v4l2-core/v4l2-mc.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) diff --git a/drivers/media/v4l2-core/v4l2-mc.c b/drivers/media/v4l2-core/v4l2-mc.c index 98edd47b2f0a..558dec225838 100644 --- a/drivers/media/v4l2-core/v4l2-mc.c +++ b/drivers/media/v4l2-core/v4l2-mc.c @@ -332,17 +332,16 @@ EXPORT_SYMBOL_GPL(v4l_vb2q_enable_media_source); /* * pipeline_pm_use_count - Count the number of users of a pipeline - * @entity: The entity + * @pad: Any pad along the pipeline * * Return the total number of users of all video device nodes in the pipeline. */ -static int pipeline_pm_use_count(struct media_entity *entity, - struct media_graph *graph) +static int pipeline_pm_use_count(struct media_pad *pad, + struct media_graph *graph) { - struct media_pad *pad; int use = 0; - media_graph_walk_start(graph, entity->pads); + media_graph_walk_start(graph, pad); while ((pad = media_graph_walk_next(graph))) { if (is_media_entity_v4l2_video_device(pad->entity)) @@ -388,7 +387,7 @@ static int pipeline_pm_power_one(struct media_entity *entity, int change) /* * pipeline_pm_power - Apply power change to all entities in a pipeline - * @entity: The entity + * @pad: Any pad along the pipeline * @change: Use count change * * Walk the pipeline to update the use count and the power state of all non-node @@ -396,16 +395,16 @@ static int pipeline_pm_power_one(struct media_entity *entity, int change) * * Return 0 on success or a negative error code on failure. */ -static int pipeline_pm_power(struct media_entity *entity, int change, +static int pipeline_pm_power(struct media_pad *pad, int change, struct media_graph *graph) { - struct media_pad *tmp_pad, *pad; + struct media_pad *tmp_pad, *first = pad; int ret = 0; if (!change) return 0; - media_graph_walk_start(graph, entity->pads); + media_graph_walk_start(graph, pad); while (!ret && (pad = media_graph_walk_next(graph))) if (is_media_entity_v4l2_subdev(pad->entity)) @@ -414,7 +413,7 @@ static int pipeline_pm_power(struct media_entity *entity, int change, if (!ret) return ret; - media_graph_walk_start(graph, entity->pads); + media_graph_walk_start(graph, first); while ((tmp_pad = media_graph_walk_next(graph)) && tmp_pad != pad) @@ -437,7 +436,7 @@ int v4l2_pipeline_pm_use(struct media_entity *entity, int use) WARN_ON(entity->use_count < 0); /* Apply power change to connected non-nodes. */ - ret = pipeline_pm_power(entity, change, &mdev->pm_count_walk); + ret = pipeline_pm_power(entity->pads, change, &mdev->pm_count_walk); if (ret < 0) entity->use_count -= change; @@ -451,8 +450,8 @@ int v4l2_pipeline_link_notify(struct media_link *link, u32 flags, unsigned int notification) { struct media_graph *graph = &link->graph_obj.mdev->pm_count_walk; - struct media_entity *source = link->source->entity; - struct media_entity *sink = link->sink->entity; + struct media_pad *source = link->source; + struct media_pad *sink = link->sink; int source_use; int sink_use; int ret = 0;