From patchwork Fri Mar 19 08:06:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shengjiu Wang X-Patchwork-Id: 12150333 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 00CEEC433E0 for ; Fri, 19 Mar 2021 08:21:24 +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 4B82764F6C for ; Fri, 19 Mar 2021 08:21:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4B82764F6C Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nxp.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 0B2FB846; Fri, 19 Mar 2021 09:20:30 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa0.perex.cz 0B2FB846 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=alsa-project.org; s=default; t=1616142080; bh=XkWWgXiMiynNN4ute6qsTX13DCeUe8cjP6UXWK64IDw=; h=From:To:Subject:Date:List-Id:List-Unsubscribe:List-Archive: List-Post:List-Help:List-Subscribe:From; b=S8Z4zK2a3mrBrS84QS+YlytkfkYxeP8gwHU08YCZonnTgxawxhm4u2YJ1vQTpiRID xlZHsJ8YW8pnTTnfk5wY6RhCryr9ResZn+EpPz53fk71aGQNdeC4dj6JRXuZFI+Io7 CvjUURpCVxiZ78QPKGbJta1jkB20WTcEzUjdD2IQ= Received: from alsa1.perex.cz (localhost.localdomain [127.0.0.1]) by alsa1.perex.cz (Postfix) with ESMTP id 19272F801F7; Fri, 19 Mar 2021 09:20:29 +0100 (CET) Received: by alsa1.perex.cz (Postfix, from userid 50401) id 24FABF8021C; Fri, 19 Mar 2021 09:20:27 +0100 (CET) Received: from inva020.nxp.com (inva020.nxp.com [92.121.34.13]) (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 E1F25F80124 for ; Fri, 19 Mar 2021 09:20:16 +0100 (CET) DKIM-Filter: OpenDKIM Filter v2.11.0 alsa1.perex.cz E1F25F80124 Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 196401A27C4; Fri, 19 Mar 2021 09:20:16 +0100 (CET) Received: from invc005.ap-rdc01.nxp.com (invc005.ap-rdc01.nxp.com [165.114.16.14]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 2787B1A27CD; Fri, 19 Mar 2021 09:20:10 +0100 (CET) Received: from localhost.localdomain (shlinux2.ap.freescale.net [10.192.224.44]) by invc005.ap-rdc01.nxp.com (Postfix) with ESMTP id EDDF94024E; Fri, 19 Mar 2021 09:20:02 +0100 (CET) From: Shengjiu Wang To: timur@kernel.org, nicoleotsuka@gmail.com, Xiubo.Lee@gmail.com, festevam@gmail.com, lgirdwood@gmail.com, broonie@kernel.org, perex@perex.cz, tiwai@suse.com, alsa-devel@alsa-project.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org Subject: [PATCH] ASoC: fsl_sai: Don't use devm_regmap_init_mmio_clk Date: Fri, 19 Mar 2021 16:06:43 +0800 Message-Id: <1616141203-13344-1-git-send-email-shengjiu.wang@nxp.com> X-Mailer: git-send-email 2.7.4 X-Virus-Scanned: ClamAV using ClamSMTP 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" When there is power domain bind with bus clock, The call flow: devm_regmap_init_mmio_clk - clk_prepare() - clk_pm_runtime_get() cause the power domain of clock always be enabled after regmap_init(). which impact the power consumption. So use devm_regmap_init_mmio instead of devm_regmap_init_mmio_clk, then explicitly enable clock when using by pm_runtime_get(), if CONFIG_PM=n, then fsl_sai_runtime_resume will be explicitly called. Signed-off-by: Shengjiu Wang Signed-off-by: Viorel Suman --- sound/soc/fsl/fsl_sai.c | 48 +++++++++++++++++++++++++++-------------- 1 file changed, 32 insertions(+), 16 deletions(-) diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index 9e7893f91882..f2c70a31c7bb 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -987,6 +987,9 @@ static int fsl_sai_check_version(struct device *dev) return 0; } +static int fsl_sai_runtime_suspend(struct device *dev); +static int fsl_sai_runtime_resume(struct device *dev); + static int fsl_sai_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; @@ -1019,24 +1022,21 @@ static int fsl_sai_probe(struct platform_device *pdev) ARRAY_SIZE(fsl_sai_reg_defaults_ofs8); } - sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev, - "bus", base, &fsl_sai_regmap_config); - - /* Compatible with old DTB cases */ - if (IS_ERR(sai->regmap) && PTR_ERR(sai->regmap) != -EPROBE_DEFER) - sai->regmap = devm_regmap_init_mmio_clk(&pdev->dev, - "sai", base, &fsl_sai_regmap_config); + sai->regmap = devm_regmap_init_mmio(&pdev->dev, base, &fsl_sai_regmap_config); if (IS_ERR(sai->regmap)) { dev_err(&pdev->dev, "regmap init failed\n"); return PTR_ERR(sai->regmap); } - /* No error out for old DTB cases but only mark the clock NULL */ sai->bus_clk = devm_clk_get(&pdev->dev, "bus"); + /* Compatible with old DTB cases */ + if (IS_ERR(sai->bus_clk) && PTR_ERR(sai->bus_clk) != -EPROBE_DEFER) + sai->bus_clk = devm_clk_get(&pdev->dev, "sai"); if (IS_ERR(sai->bus_clk)) { dev_err(&pdev->dev, "failed to get bus clock: %ld\n", PTR_ERR(sai->bus_clk)); - sai->bus_clk = NULL; + /* -EPROBE_DEFER */ + return PTR_ERR(sai->bus_clk); } for (i = 1; i < FSL_SAI_MCLK_MAX; i++) { @@ -1117,6 +1117,18 @@ static int fsl_sai_probe(struct platform_device *pdev) sai->dma_params_tx.maxburst = FSL_SAI_MAXBURST_TX; platform_set_drvdata(pdev, sai); + pm_runtime_enable(&pdev->dev); + if (!pm_runtime_enabled(&pdev->dev)) { + ret = fsl_sai_runtime_resume(&pdev->dev); + if (ret) + goto err_pm_disable; + } + + ret = pm_runtime_get_sync(&pdev->dev); + if (ret < 0) { + pm_runtime_put_noidle(&pdev->dev); + goto err_pm_get_sync; + } /* Get sai version */ ret = fsl_sai_check_version(&pdev->dev); @@ -1130,26 +1142,30 @@ static int fsl_sai_probe(struct platform_device *pdev) FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN); } - pm_runtime_enable(&pdev->dev); - regcache_cache_only(sai->regmap, true); + ret = pm_runtime_put_sync(&pdev->dev); + if (ret < 0) + goto err_pm_get_sync; ret = devm_snd_soc_register_component(&pdev->dev, &fsl_component, &sai->cpu_dai_drv, 1); if (ret) - goto err_pm_disable; + goto err_pm_get_sync; if (sai->soc_data->use_imx_pcm) { ret = imx_pcm_dma_init(pdev, IMX_SAI_DMABUF_SIZE); if (ret) - goto err_pm_disable; + goto err_pm_get_sync; } else { ret = devm_snd_dmaengine_pcm_register(&pdev->dev, NULL, 0); if (ret) - goto err_pm_disable; + goto err_pm_get_sync; } return ret; +err_pm_get_sync: + if (!pm_runtime_status_suspended(&pdev->dev)) + fsl_sai_runtime_suspend(&pdev->dev); err_pm_disable: pm_runtime_disable(&pdev->dev); @@ -1159,6 +1175,8 @@ static int fsl_sai_probe(struct platform_device *pdev) static int fsl_sai_remove(struct platform_device *pdev) { pm_runtime_disable(&pdev->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + fsl_sai_runtime_suspend(&pdev->dev); return 0; } @@ -1219,7 +1237,6 @@ static const struct of_device_id fsl_sai_ids[] = { }; MODULE_DEVICE_TABLE(of, fsl_sai_ids); -#ifdef CONFIG_PM static int fsl_sai_runtime_suspend(struct device *dev) { struct fsl_sai *sai = dev_get_drvdata(dev); @@ -1292,7 +1309,6 @@ static int fsl_sai_runtime_resume(struct device *dev) return ret; } -#endif /* CONFIG_PM */ static const struct dev_pm_ops fsl_sai_pm_ops = { SET_RUNTIME_PM_OPS(fsl_sai_runtime_suspend,