From patchwork Mon Jun 22 21:23:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bard Liao X-Patchwork-Id: 11620157 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 719B790 for ; Tue, 23 Jun 2020 09:20:29 +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 0947F2078E for ; Tue, 23 Jun 2020 09:20:28 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="PpYiJ9YG" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0947F2078E 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 7D2741759; Tue, 23 Jun 2020 11:19:39 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 7D2741759 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1592904027; bh=lh4waOHilk3dvCUPjCqJmIDZT4LIsi2bPJ+ypKKuoXw=; h=From:To:Subject:Date:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=PpYiJ9YGVRFuXeUMUNQHFIarsUCG/cTjt5ijIUVpUr3/3ro1TFB6yYXX9hlgqLaUS SLJuuwMIBws89OEoVPqH9IK9U3O+pBcbiltXd4d4SoVpuL4pp2YN39ah4MNK8MGDN8 Ri8se9PzssAPR/5jIHUME7u8LRjMokrThvzn30Qc= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 8D92AF802A1; Tue, 23 Jun 2020 11:18:05 +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 B595EF8025E; Tue, 23 Jun 2020 11:18:01 +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=1.1 required=5.0 tests=DATE_IN_PAST_06_12, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_NONE,URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) (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 23EFEF800B2 for ; Tue, 23 Jun 2020 11:17:54 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz 23EFEF800B2 IronPort-SDR: RUBa78uiutHRlxMWe3N6KuVrsBIkguv0N2zrONpOJQShuiiOF2nYZTe5/S9WXRoe+Ydke3v9tU 7D0ivNCQ7OMw== X-IronPort-AV: E=McAfee;i="6000,8403,9660"; a="145508135" X-IronPort-AV: E=Sophos;i="5.75,270,1589266800"; d="scan'208";a="145508135" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga002.jf.intel.com ([10.7.209.21]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Jun 2020 02:17:53 -0700 IronPort-SDR: tfyBTA+OrLrVc1xPcJxkQzm1oxRhE9iotU3HGD3dUo0rECfJdeNpmMMgZxmHnfIvz7vnLF37rA 9Ut8263okeog== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.75,270,1589266800"; d="scan'208";a="293141982" Received: from bard-ubuntu.sh.intel.com ([10.239.13.33]) by orsmga002.jf.intel.com with ESMTP; 23 Jun 2020 02:17:49 -0700 From: Bard Liao To: alsa-devel@alsa-project.org, vkoul@kernel.org Subject: [PATCH 2/5] soundwire: stream: add helper to startup/shutdown streams Date: Tue, 23 Jun 2020 05:23:29 +0800 Message-Id: <20200622212332.16277-3-yung-chuan.liao@linux.intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200622212332.16277-1-yung-chuan.liao@linux.intel.com> References: <20200622212332.16277-1-yung-chuan.liao@linux.intel.com> Cc: pierre-louis.bossart@linux.intel.com, vinod.koul@linaro.org, tiwai@suse.de, gregkh@linuxfoundation.org, linux-kernel@vger.kernel.org, ranjani.sridharan@linux.intel.com, hui.wang@canonical.com, broonie@kernel.org, srinivas.kandagatla@linaro.org, jank@cadence.com, mengdong.lin@intel.com, slawomir.blauciak@intel.com, sanyog.r.kale@intel.com, rander.wang@linux.intel.com, bard.liao@intel.com 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" From: Pierre-Louis Bossart To handle streams at the dailink level, expose two helpers that will be called from machine drivers. Reviewed-by: Ranjani Sridharan Reviewed-by: Guennadi Liakhovetski Reviewed-by: Kai Vehmanen Signed-off-by: Pierre-Louis Bossart Signed-off-by: Bard Liao --- drivers/soundwire/stream.c | 90 +++++++++++++++++++++++++++++++++++ include/linux/soundwire/sdw.h | 2 + 2 files changed, 92 insertions(+) diff --git a/drivers/soundwire/stream.c b/drivers/soundwire/stream.c index a9a72574b34a..48daf4b48f51 100644 --- a/drivers/soundwire/stream.c +++ b/drivers/soundwire/stream.c @@ -13,6 +13,9 @@ #include #include #include +#include +#include +#include #include "bus.h" /* @@ -1826,3 +1829,90 @@ int sdw_deprepare_stream(struct sdw_stream_runtime *stream) return ret; } EXPORT_SYMBOL(sdw_deprepare_stream); + +static int set_stream(struct snd_pcm_substream *substream, + struct sdw_stream_runtime *sdw_stream) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct snd_soc_dai *dai; + int ret = 0; + int i; + + /* Set stream pointer on all DAIs */ + for_each_rtd_dais(rtd, i, dai) { + ret = snd_soc_dai_set_sdw_stream(dai, sdw_stream, + substream->stream); + if (ret < 0) { + dev_err(rtd->dev, + "failed to set stream pointer on dai %s", + dai->name); + break; + } + } + + return ret; +} + +int sdw_startup_stream(void *sdw_substream) +{ + struct snd_pcm_substream *substream = sdw_substream; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct sdw_stream_runtime *sdw_stream; + char *name; + int ret; + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) + name = kasprintf(GFP_KERNEL, "%s-Playback", substream->name); + else + name = kasprintf(GFP_KERNEL, "%s-Capture", substream->name); + + if (!name) + return -ENOMEM; + + sdw_stream = sdw_alloc_stream(name); + if (!sdw_stream) { + dev_err(rtd->dev, "alloc stream failed for substream DAI %s", + substream->name); + ret = -ENOMEM; + goto error; + } + + ret = set_stream(substream, sdw_stream); + if (ret < 0) + goto release_stream; + return 0; + +release_stream: + sdw_release_stream(sdw_stream); + set_stream(substream, NULL); +error: + kfree(name); + return ret; +} +EXPORT_SYMBOL(sdw_startup_stream); + +void sdw_shutdown_stream(void *sdw_substream) +{ + struct snd_pcm_substream *substream = sdw_substream; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct sdw_stream_runtime *sdw_stream; + struct snd_soc_dai *dai; + + /* Find stream from first CPU DAI */ + dai = asoc_rtd_to_cpu(rtd, 0); + + sdw_stream = snd_soc_dai_get_sdw_stream(dai, substream->stream); + + if (!sdw_stream) { + dev_err(rtd->dev, "no stream found for DAI %s", dai->name); + return; + } + + /* release memory */ + kfree(sdw_stream->name); + sdw_release_stream(sdw_stream); + + /* clear DAI data */ + set_stream(substream, NULL); +} +EXPORT_SYMBOL(sdw_shutdown_stream); diff --git a/include/linux/soundwire/sdw.h b/include/linux/soundwire/sdw.h index 9c27a32df9bb..51ecbd8faa8c 100644 --- a/include/linux/soundwire/sdw.h +++ b/include/linux/soundwire/sdw.h @@ -952,10 +952,12 @@ int sdw_stream_remove_master(struct sdw_bus *bus, struct sdw_stream_runtime *stream); int sdw_stream_remove_slave(struct sdw_slave *slave, struct sdw_stream_runtime *stream); +int sdw_startup_stream(void *sdw_substream); int sdw_prepare_stream(struct sdw_stream_runtime *stream); int sdw_enable_stream(struct sdw_stream_runtime *stream); int sdw_disable_stream(struct sdw_stream_runtime *stream); int sdw_deprepare_stream(struct sdw_stream_runtime *stream); +void sdw_shutdown_stream(void *sdw_substream); int sdw_bus_prep_clk_stop(struct sdw_bus *bus); int sdw_bus_clk_stop(struct sdw_bus *bus); int sdw_bus_exit_clk_stop(struct sdw_bus *bus);