From patchwork Thu Feb 4 04:03:36 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shuah Khan X-Patchwork-Id: 8214211 Return-Path: X-Original-To: patchwork-alsa-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E87359F3CD for ; Thu, 4 Feb 2016 07:24:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1AEF42037E for ; Thu, 4 Feb 2016 07:24:44 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.kernel.org (Postfix) with ESMTP id C247F20376 for ; Thu, 4 Feb 2016 07:24:42 +0000 (UTC) Received: by alsa0.perex.cz (Postfix, from userid 1000) id EF952266697; Thu, 4 Feb 2016 08:24:41 +0100 (CET) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_NONE, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 11979265D93; Thu, 4 Feb 2016 08:20:35 +0100 (CET) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa0.perex.cz (Postfix, from userid 1000) id CABC3265D8D; Thu, 4 Feb 2016 05:04:22 +0100 (CET) Received: from mailout.easymail.ca (mailout.easymail.ca [64.68.201.169]) by alsa0.perex.cz (Postfix) with ESMTP id DD4CA2617BB for ; Thu, 4 Feb 2016 05:04:06 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by mailout.easymail.ca (Postfix) with ESMTP id 41E0FE9EF; Wed, 3 Feb 2016 23:04:06 -0500 (EST) X-Quarantine-ID: X-Virus-Scanned: Debian amavisd-new at mailout.easymail.ca X-Amavis-Alert: BAD HEADER SECTION, Duplicate header field: "References" Received: from mailout.easymail.ca ([127.0.0.1]) by localhost (easymail-mailout.easydns.vpn [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id N7TDwz3ovbtz; Wed, 3 Feb 2016 23:04:05 -0500 (EST) Received: from mail.gonehiking.org (c-73-181-52-62.hsd1.co.comcast.net [73.181.52.62]) by mailout.easymail.ca (Postfix) with ESMTPA id C10BFE9EE; Wed, 3 Feb 2016 23:04:05 -0500 (EST) Received: from lorien.internal (lorien-wl.internal [192.168.1.40]) by mail.gonehiking.org (Postfix) with ESMTP id BEDF59F184; Wed, 3 Feb 2016 21:04:04 -0700 (MST) From: Shuah Khan To: mchehab@osg.samsung.com, tiwai@suse.com, clemens@ladisch.de, hans.verkuil@cisco.com, laurent.pinchart@ideasonboard.com, sakari.ailus@linux.intel.com, javier@osg.samsung.com Date: Wed, 3 Feb 2016 21:03:36 -0700 Message-Id: X-Mailer: git-send-email 2.5.0 In-Reply-To: References: In-Reply-To: References: X-Mailman-Approved-At: Thu, 04 Feb 2016 08:20:29 +0100 Cc: klock.android@gmail.com, k.kozlowski@samsung.com, alsa-devel@alsa-project.org, prabhakar.csengg@gmail.com, normalperson@yhbt.net, ricardo.ribalda@gmail.com, elfring@users.sourceforge.net, m.szyprowski@samsung.com, pierre-louis.bossart@linux.intel.com, arnd@arndb.de, corbet@lwn.net, Shuah Khan , j.anaszewski@samsung.com, crope@iki.fi, linuxbugs@vittgam.net, takamichiho@gmail.com, jh1009.sung@samsung.com, dan.carpenter@oracle.com, linux-media@vger.kernel.org, julian@jusst.de, ricard.wanderlof@axis.com, pawel@osciak.com, misterpib@gmail.com, tvboxspy@gmail.com, linux-kernel@vger.kernel.org, inki.dae@samsung.com, geliangtang@163.com, nenggun.kim@samsung.com, joe@oampo.co.uk, dominic.sacre@gmx.de, chehabrafael@gmail.com, labbott@fedoraproject.org, linux-api@vger.kernel.org, sw0312.kim@samsung.com, ruchandani.tina@gmail.com, gtmkramer@xs4all.nl, kyungmin.park@samsung.com, stefanr@s5r6.in-berlin.de, johan@oljud.se, p.zabel@pengutronix.de, daniel@zonque.org Subject: [alsa-devel] [PATCH v2 04/22] media: Media Controller enable/disable source handler API X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Alsa-devel mailing list for ALSA developers - http://www.alsa-project.org" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: alsa-devel-bounces@alsa-project.org Sender: alsa-devel-bounces@alsa-project.org X-Virus-Scanned: ClamAV using ClamSMTP Add new fields to struct media_device to add enable_source, and disable_source handlers, and source_priv to stash driver private data that is used to run these handlers. The enable_source handler finds source entity for the passed in entity and checks if it is available. When link is found, it activates it. Disable source handler deactivates the link. Bridge driver is expected to implement and set these handlers. Signed-off-by: Shuah Khan --- include/media/media-device.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/media/media-device.h b/include/media/media-device.h index bad8242a..9415f1b 100644 --- a/include/media/media-device.h +++ b/include/media/media-device.h @@ -333,6 +333,25 @@ struct media_device { /* Serializes graph operations. */ struct mutex graph_mutex; + /* Handlers to find source entity for the sink entity and + * check if it is available, and activate the link using + * media_entity_setup_link() interface and start pipeline + * from the source to the entity. + * Bridge driver is expected to implement and set the + * handler when media_device is registered or when + * bridge driver finds the media_device during probe. + * Bridge driver sets source_priv with information + * necessary to run enable/disable source handlers. + * + * Use-case: find tuner entity connected to the decoder + * entity and check if it is available, and activate the + * using media_entity_setup_link() if it is available. + */ + void *source_priv; + int (*enable_source)(struct media_entity *entity, + struct media_pipeline *pipe); + void (*disable_source)(struct media_entity *entity); + int (*link_notify)(struct media_link *link, u32 flags, unsigned int notification); };