From patchwork Mon Jun 25 10:58:58 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shreyas NC X-Patchwork-Id: 10485555 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 6458C603B5 for ; Mon, 25 Jun 2018 11:01:42 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4C8D422362 for ; Mon, 25 Jun 2018 11:01:42 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 3F0A02894D; Mon, 25 Jun 2018 11:01:42 +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=-2.9 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_NONE autolearn=ham version=3.3.1 Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id B36F522362 for ; Mon, 25 Jun 2018 11:01:40 +0000 (UTC) Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 896EE2677AD; Mon, 25 Jun 2018 13:01:02 +0200 (CEST) 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 B420E2677A1; Mon, 25 Jun 2018 13:00:58 +0200 (CEST) Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) by alsa0.perex.cz (Postfix) with ESMTP id C946B2675FB for ; Mon, 25 Jun 2018 13:00:56 +0200 (CEST) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 25 Jun 2018 04:00:56 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.51,270,1526367600"; d="scan'208";a="60992273" Received: from snc-desk.iind.intel.com ([10.223.96.118]) by fmsmga002.fm.intel.com with ESMTP; 25 Jun 2018 04:00:54 -0700 From: Shreyas NC To: alsa-devel@alsa-project.org Date: Mon, 25 Jun 2018 16:28:58 +0530 Message-Id: <1529924340-30065-6-git-send-email-shreyas.nc@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1529924340-30065-1-git-send-email-shreyas.nc@intel.com> References: <1529924340-30065-1-git-send-email-shreyas.nc@intel.com> Cc: patches.audio@intel.com, gregkh@linuxfoundation.org, pierre-louis.bossart@linux.intel.com, vkoul@kernel.org, Shreyas NC , sanyog.r.kale@intel.com Subject: [alsa-devel] [PATCH v4 5/7] soundwire: keep track of Masters in a stream 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 A multi link bankswitch can be done if the hardware supports and the stream is handled by multiple Master(s). This preparatory patch adds support to track m_rt in a stream. Signed-off-by: Shreyas NC --- drivers/soundwire/stream.c | 4 ++++ include/linux/soundwire/sdw.h | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 0e8a2eb5..f358b92 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -759,6 +759,7 @@ struct sdw_stream_runtime *sdw_alloc_stream(char *stream_name) stream->name = stream_name; INIT_LIST_HEAD(&stream->master_list); stream->state = SDW_STREAM_ALLOCATED; + stream->m_rt_count = 0; return stream; } @@ -968,6 +969,7 @@ int sdw_stream_remove_master(struct sdw_bus *bus, if (list_empty(&stream->master_list)) stream->state = SDW_STREAM_RELEASED; + stream->m_rt_count--; mutex_unlock(&bus->bus_lock); return 0; @@ -1166,6 +1168,8 @@ int sdw_stream_add_master(struct sdw_bus *bus, if (ret) goto stream_error; + stream->m_rt_count++; + stream->state = SDW_STREAM_CONFIGURED; stream_error: diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 03df709..214e146 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -771,6 +771,7 @@ struct sdw_stream_params { * @master_list: List of Master runtime(s) in this stream. * master_list can contain only one m_rt per Master instance * for a stream + * @m_rt_count: Count of Master runtime(s) in this stream */ struct sdw_stream_runtime { char *name; @@ -778,6 +779,7 @@ struct sdw_stream_runtime { enum sdw_stream_state state; enum sdw_stream_type type; struct list_head master_list; + int m_rt_count; }; struct sdw_stream_runtime *sdw_alloc_stream(char *stream_name);