From patchwork Thu Aug 27 01:50:21 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Kuninori Morimoto X-Patchwork-Id: 11739819 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 E0810109B for ; Thu, 27 Aug 2020 01:51:44 +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 776D92087C for ; Thu, 27 Aug 2020 01:51:44 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=alsa-project.org header.i=@alsa-project.org header.b="harZ5CDA" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 776D92087C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=renesas.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 86A0F17EE; Thu, 27 Aug 2020 03:50:57 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 86A0F17EE DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1598493102; bh=gyHd6031Usvb3qpUrvnCgIfNzYOWq3NlJnnnTbodNUE=; h=Date:From:Subject:To:In-Reply-To:References:Cc:List-Id: List-Unsubscribe:List-Archive:List-Post:List-Help:List-Subscribe: From; b=harZ5CDAloBJcRhYelusXTUDmSmuuDgXpCPTzm6u+cGkTkQHi6GQpU/AGEUwaBFnR HwEL9qyEEXGsOA7M2JmOUnQkF49JgyZyGkZeAE2BqN5SmM2WtNRcMSs7FAnMjJdUZt yprb/HSYpA4PLcCIthFGJkMIVmbC0K4r7E5sWfpk= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id B3119F80245; Thu, 27 Aug 2020 03:50:30 +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 91953F8025A; Thu, 27 Aug 2020 03:50:29 +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_PASS, URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from relmlie6.idc.renesas.com (relmlor2.renesas.com [210.160.252.172]) by alsa1.perex.cz (Postfix) with ESMTP id B4DFDF80143 for ; Thu, 27 Aug 2020 03:50:22 +0200 (CEST) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz B4DFDF80143 Date: 27 Aug 2020 10:50:21 +0900 X-IronPort-AV: E=Sophos;i="5.76,357,1592838000"; d="scan'208";a="55418679" Received: from unknown (HELO relmlir6.idc.renesas.com) ([10.200.68.152]) by relmlie6.idc.renesas.com with ESMTP; 27 Aug 2020 10:50:21 +0900 Received: from mercury.renesas.com (unknown [10.166.252.133]) by relmlir6.idc.renesas.com (Postfix) with ESMTP id 7D5B74143014; Thu, 27 Aug 2020 10:50:21 +0900 (JST) Message-ID: <87v9h4voz5.wl-kuninori.morimoto.gx@renesas.com> From: Kuninori Morimoto Subject: [PATCH v2 1/7] ASoC: soc-dai: add mark for snd_soc_dai_startup/shutdown() User-Agent: Wanderlust/2.15.9 Emacs/26.3 Mule/6.0 To: Mark Brown In-Reply-To: <87wo1kvozz.wl-kuninori.morimoto.gx@renesas.com> References: <87wo1kvozz.wl-kuninori.morimoto.gx@renesas.com> MIME-Version: 1.0 (generated by SEMI-EPG 1.14.7 - "Harue") Cc: Linux-ALSA 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: Kuninori Morimoto soc_pcm_open() does rollback when failed (A), but, it is almost same as soc_pcm_close(). static int soc_pcm_open(xxx) { ... if (ret < 0) goto xxx_err; ... return 0; ^ config_err: | ... | rtd_startup_err: (A) ... | component_err: | ... v return ret; } The difference is soc_pcm_close() is for all dai/component/substream, rollback is for succeeded part only. This kind of duplicated code can be a hotbed of bugs, thus, we want to share soc_pcm_close() and rollback. Now, soc_pcm_open/close() are handling => 1) snd_soc_dai_startup/shutdown() 2) snd_soc_link_startup/shutdown() 3) snd_soc_component_module_get/put() 4) snd_soc_component_open/close() 5) pm_runtime_put/get() This patch is for 1) snd_soc_dai_startup/shutdown(). The idea of having bit-flag or counter is not enough for this purpose. For example if one DAI is used for 2xPlaybacks for some reasons, and if 1st Playback was succeeded but 2nd Playback was failed, 2nd Playback rollback doesn't need to call shutdown. But it has succeeded bit-flag or counter via 1st Playback, thus, 2nd Playback rollback will call unneeded shutdown. And 1st Playback's necessary shutdown will not be called, because bit-flag or counter was cleared by wrong 2nd Playback rollback. To avoid such case, this patch marks substream pointer when startup() was succeeded. If rollback needed, it will check rollback flag and marked substream pointer. One note here is that it cares *current* startup() only now. but we might want to check *whole* marked substream in the future. This patch is using macro named "push/pop", so that it can be easily update. Signed-off-by: Kuninori Morimoto --- include/sound/soc-dai.h | 5 ++++- sound/soc/soc-dai.c | 21 ++++++++++++++++++++- sound/soc/soc-dapm.c | 4 ++-- sound/soc/soc-pcm.c | 4 ++-- 4 files changed, 28 insertions(+), 6 deletions(-) diff --git a/include/sound/soc-dai.h b/include/sound/soc-dai.h index 776a60529e70..86411f503c1c 100644 --- a/include/sound/soc-dai.h +++ b/include/sound/soc-dai.h @@ -153,7 +153,7 @@ void snd_soc_dai_hw_free(struct snd_soc_dai *dai, int snd_soc_dai_startup(struct snd_soc_dai *dai, struct snd_pcm_substream *substream); void snd_soc_dai_shutdown(struct snd_soc_dai *dai, - struct snd_pcm_substream *substream); + struct snd_pcm_substream *substream, int rollback); snd_pcm_sframes_t snd_soc_dai_delay(struct snd_soc_dai *dai, struct snd_pcm_substream *substream); void snd_soc_dai_suspend(struct snd_soc_dai *dai); @@ -388,6 +388,9 @@ struct snd_soc_dai { struct list_head list; + /* function mark */ + struct snd_pcm_substream *mark_startup; + /* bit field */ unsigned int probed:1; }; diff --git a/sound/soc/soc-dai.c b/sound/soc/soc-dai.c index 0dbd312aad08..4705c3da6280 100644 --- a/sound/soc/soc-dai.c +++ b/sound/soc/soc-dai.c @@ -32,6 +32,14 @@ static inline int _soc_dai_ret(struct snd_soc_dai *dai, return ret; } +/* + * We might want to check substream by using list. + * In such case, we can update these macros. + */ +#define soc_dai_mark_push(dai, substream, tgt) ((dai)->mark_##tgt = substream) +#define soc_dai_mark_pop(dai, substream, tgt) ((dai)->mark_##tgt = NULL) +#define soc_dai_mark_match(dai, substream, tgt) ((dai)->mark_##tgt == substream) + /** * snd_soc_dai_set_sysclk - configure DAI system or master clock. * @dai: DAI @@ -348,15 +356,26 @@ int snd_soc_dai_startup(struct snd_soc_dai *dai, dai->driver->ops->startup) ret = dai->driver->ops->startup(substream, dai); + /* mark substream if succeeded */ + if (ret == 0) + soc_dai_mark_push(dai, substream, startup); + return soc_dai_ret(dai, ret); } void snd_soc_dai_shutdown(struct snd_soc_dai *dai, - struct snd_pcm_substream *substream) + struct snd_pcm_substream *substream, + int rollback) { + if (rollback && !soc_dai_mark_match(dai, substream, startup)) + return; + if (dai->driver->ops && dai->driver->ops->shutdown) dai->driver->ops->shutdown(substream, dai); + + /* remove marked substream */ + soc_dai_mark_pop(dai, substream, startup); } snd_pcm_sframes_t snd_soc_dai_delay(struct snd_soc_dai *dai, diff --git a/sound/soc/soc-dapm.c b/sound/soc/soc-dapm.c index 3273161e2787..980f2c330b87 100644 --- a/sound/soc/soc-dapm.c +++ b/sound/soc/soc-dapm.c @@ -3968,14 +3968,14 @@ static int snd_soc_dai_link_event(struct snd_soc_dapm_widget *w, snd_soc_dapm_widget_for_each_source_path(w, path) { source = path->source->priv; snd_soc_dai_deactivate(source, substream->stream); - snd_soc_dai_shutdown(source, substream); + snd_soc_dai_shutdown(source, substream, 0); } substream->stream = SNDRV_PCM_STREAM_PLAYBACK; snd_soc_dapm_widget_for_each_sink_path(w, path) { sink = path->sink->priv; snd_soc_dai_deactivate(sink, substream->stream); - snd_soc_dai_shutdown(sink, substream); + snd_soc_dai_shutdown(sink, substream, 0); } break; diff --git a/sound/soc/soc-pcm.c b/sound/soc/soc-pcm.c index 00ac1cbf6f88..d269e2865013 100644 --- a/sound/soc/soc-pcm.c +++ b/sound/soc/soc-pcm.c @@ -682,7 +682,7 @@ static int soc_pcm_close(struct snd_pcm_substream *substream) snd_soc_runtime_deactivate(rtd, substream->stream); for_each_rtd_dais(rtd, i, dai) - snd_soc_dai_shutdown(dai, substream); + snd_soc_dai_shutdown(dai, substream, 0); snd_soc_link_shutdown(substream); @@ -813,7 +813,7 @@ static int soc_pcm_open(struct snd_pcm_substream *substream) config_err: for_each_rtd_dais(rtd, i, dai) - snd_soc_dai_shutdown(dai, substream); + snd_soc_dai_shutdown(dai, substream, 1); snd_soc_link_shutdown(substream); rtd_startup_err: