From patchwork Wed Oct 23 21:46:00 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Pierre-Louis Bossart X-Patchwork-Id: 11207881 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 39E381747 for ; Wed, 23 Oct 2019 21:59:07 +0000 (UTC) Received: from alsa0.perex.cz (alsa0.perex.cz [77.48.224.243]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id C16B720679 for ; Wed, 23 Oct 2019 21:59:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="BfDIKGbj" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C16B720679 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa1.perex.cz (alsa1.perex.cz [207.180.221.201]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by alsa0.perex.cz (Postfix) with ESMTPS id 1C2E61688; Wed, 23 Oct 2019 23:58:15 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 1C2E61688 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1571867945; bh=AF2VUKTql5WbYrGlc4dbnPabrgELfgIJ5KSFnZjfMuU=; h=From:To:Date:In-Reply-To:References:Cc:Subject:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=BfDIKGbj5UMkUpF/nni33lI60f3WowQhfwgPYWYq/o5uGeGKrC5SVNUq3Y/i+fO1Q uR6ciLFdfqpWFthhUNKbYiG/rOrBKhspIrp+1Gef0WJx7L4fg1/Vc+K5JxLfXuZ/yF qlv1Bhfl8n+Dtqdr1r9L049XdRQtHJdIXxR1rTJo= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 345E8F80764; Wed, 23 Oct 2019 23:46:55 +0200 (CEST) X-Original-To: alsa-devel@alsa-project.org Delivered-To: alsa-devel@alsa-project.org Received: by alsa1.perex.cz (Postfix, from userid 50401) id 38AC0F80737; Wed, 23 Oct 2019 23:46:52 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on alsa1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.0 required=5.0 tests=SPF_HELO_NONE,SPF_NONE, SURBL_BLOCKED,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga01.intel.com (mga01.intel.com [192.55.52.88]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by alsa1.perex.cz (Postfix) with ESMTPS id B50D7F80724 for ; Wed, 23 Oct 2019 23:46:48 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B50D7F80724 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by fmsmga101.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Oct 2019 14:46:48 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,222,1569308400"; d="scan'208";a="196908291" Received: from ayamada-mobl1.gar.corp.intel.com (HELO pbossart-mobl3.intel.com) ([10.254.95.208]) by fmsmga008.fm.intel.com with ESMTP; 23 Oct 2019 14:46:46 -0700 From: Pierre-Louis Bossart To: alsa-devel@alsa-project.org Date: Wed, 23 Oct 2019 16:46:00 -0500 Message-Id: <20191023214601.883-18-pierre-louis.bossart@linux.intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191023214601.883-1-pierre-louis.bossart@linux.intel.com> References: <20191023214601.883-1-pierre-louis.bossart@linux.intel.com> MIME-Version: 1.0 Cc: Pierre-Louis Bossart , tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, Ranjani Sridharan , vkoul@kernel.org, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, slawomir.blauciak@intel.com, Sanyog Kale , Bard liao , Rander Wang Subject: [alsa-devel] [PATCH 17/18] soundwire: stream: do not update parameters during DISABLED-PREPARED transition X-BeenThere: alsa-devel@alsa-project.org X-Mailman-Version: 2.1.15 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: , Errors-To: alsa-devel-bounces@alsa-project.org Sender: "Alsa-devel" After a system suspend, the ALSA/ASoC core will invoke the .prepare() callback and a TRIGGER_START when INFO_RESUME is not supported. Likewise, when an underflow occurs, the .prepare callback will be invoked. In both cases, the stream can be in DISABLED mode, and will transition into the PREPARED mode. We however don't want the bus bandwidth to be recomputed. Signed-off-by: Pierre-Louis Bossart --- drivers/soundwire/stream.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index 38375c9124e4..3447ef7d55e3 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -1460,7 +1460,8 @@ static void sdw_release_bus_lock(struct sdw_stream_runtime *stream) } } -static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) +static int _sdw_prepare_stream(struct sdw_stream_runtime *stream, + bool update_params) { struct sdw_master_runtime *m_rt; struct sdw_bus *bus = NULL; @@ -1480,6 +1481,9 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) return -EINVAL; } + if (!update_params) + goto program_params; + /* Increment cumulative bus bandwidth */ /* TODO: Update this during Device-Device support */ bus->params.bandwidth += m_rt->stream->params.rate * @@ -1495,6 +1499,7 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) } } +program_params: /* Program params */ ret = sdw_program_params(bus); if (ret < 0) { @@ -1544,6 +1549,7 @@ static int _sdw_prepare_stream(struct sdw_stream_runtime *stream) */ int sdw_prepare_stream(struct sdw_stream_runtime *stream) { + bool update_params = true; int ret; if (!stream) { @@ -1567,7 +1573,16 @@ int sdw_prepare_stream(struct sdw_stream_runtime *stream) goto state_err; } - ret = _sdw_prepare_stream(stream); + /* + * when the stream is DISABLED, this means sdw_prepare_stream() + * is called as a result of an underflow or a resume operation. + * In this case, the bus parameters shall not be recomputed, but + * still need to be re-applied + */ + if (stream->state == SDW_STREAM_DISABLED) + update_params = false; + + ret = _sdw_prepare_stream(stream, update_params); if (ret < 0) pr_err("Prepare for stream:%s failed: %d\n", stream->name, ret);