From patchwork Mon Oct 9 08:50:00 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Mark Brown X-Patchwork-Id: 115190 Delivered-To: patch@linaro.org Received: by 10.140.22.163 with SMTP id 32csp2310449qgn; Mon, 9 Oct 2017 01:51:44 -0700 (PDT) X-Google-Smtp-Source: AOwi7QBEyBpDo7FcA6ZHyIdbJe099veDJKwjAVFDtAcgASbD/BnM5RHNj7zrsKThm35sJyNMvuq0 X-Received: by 10.28.238.193 with SMTP id j62mr7506931wmi.44.1507539103980; Mon, 09 Oct 2017 01:51:43 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1507539103; cv=none; d=google.com; s=arc-20160816; b=cSrt+k99Gs3pm2/57B8NWyoxTWxpadf/HPQUVYSp2ye9rLHgSiJ3FGzjOfiMsA7rEZ 7sI/r8yHQiK3tr0/MNaiJ+9WD+Wp5fOOIfLdwDi+hv5aE3cgUqB7FDXt/B9OBRS04GaJ 7JrM9fTc+VFzpg1mXy8P+Qc1j6S6ltqC2nqQbDRGw6L3my/0YFyT3dhpZ9zUyg98GLya LsThW9elTQxXZNg4TWg7eBGTvoBGmJSzktHWmzRuoo01Arw60pnYH4A1Kegcj6Q8Mhrd vEUwT7ZjSXQMWQ0sTDjLwapd2CCQaP3ao+TTl7FpL29u04wlhOt3V2k7jRzJmZEn2VFb kyyw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version :list-subscribe:list-help:list-post:list-archive:list-unsubscribe :list-id:precedence:subject:cc:date:message-id:in-reply-to:to:from :dkim-signature:delivered-to:arc-authentication-results; bh=fiYXCOa2ExmZx3LXtqmP++RgWS7AiDd4XBSae/0tR4I=; b=VTDSuA0JzVB8ZpzG/Oy9/GzDxnbJxM7UgwHvkBmAxavWrpjPOFnmrWQcFmsSyYklRG 5JV11gwH75EOXoJg4MwR/9guzUmcHR5Rtp8fg715eDrjdzgHak8ThXL0ZKHSw2G5GbAZ k93310oKBnvoS78FT5W/4HUh8RbtHSJisGHizDBZZGGUaaYMGLrKpukdmIDXtYm4Vzef wziJTVznGZTGJb/V59YRKNt4ceh5GeMeHfGq6xE9bBZXkFvSNej94zoyiI1LKfRkmA0S sTyr373FxnXqLHpKyAgxEQMaQDEzs4y1YMZ1acHRn9etFZG3NqClN7DDmbZtZINwlKF/ FftA== ARC-Authentication-Results: i=1; mx.google.com; dkim=neutral (body hash did not verify) header.i=@sirena.org.uk header.s=20170815-heliosphere header.b=oDOmYreZ; spf=pass (google.com: domain of alsa-devel-bounces@alsa-project.org designates 77.48.224.243 as permitted sender) smtp.mailfrom=alsa-devel-bounces@alsa-project.org Return-Path: Received: from alsa0.perex.cz (alsa0.perex.cz. [77.48.224.243]) by mx.google.com with ESMTP id w5si6275015wma.208.2017.10.09.01.51.43; Mon, 09 Oct 2017 01:51:43 -0700 (PDT) Received-SPF: pass (google.com: domain of alsa-devel-bounces@alsa-project.org designates 77.48.224.243 as permitted sender) client-ip=77.48.224.243; Authentication-Results: mx.google.com; dkim=neutral (body hash did not verify) header.i=@sirena.org.uk header.s=20170815-heliosphere header.b=oDOmYreZ; spf=pass (google.com: domain of alsa-devel-bounces@alsa-project.org designates 77.48.224.243 as permitted sender) smtp.mailfrom=alsa-devel-bounces@alsa-project.org Received: from alsa0.perex.cz (localhost [127.0.0.1]) by alsa0.perex.cz (Postfix) with ESMTP id 901B22671C5; Mon, 9 Oct 2017 10:50:20 +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 809C82671D3; Mon, 9 Oct 2017 10:50:17 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on mail1.perex.cz X-Spam-Level: X-Spam-Status: No, score=0.7 required=5.0 tests=DKIM_SIGNED,DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, SPF_NEUTRAL, URIBL_BLOCKED autolearn=disabled version=3.4.0 Received: from heliosphere.sirena.org.uk (heliosphere.sirena.org.uk [172.104.155.198]) by alsa0.perex.cz (Postfix) with ESMTP id DB07526719C for ; Mon, 9 Oct 2017 10:50:02 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=sirena.org.uk; s=20170815-heliosphere; h=Date:Message-Id:In-Reply-To: Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:References: List-Id:List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner: List-Archive; bh=yHP1i+VyPVq5B3QGcRvPQnGyZrw7k9i22TpQcILu6GI=; b=oDOmYreZGFYE ymmwQNP7kmqcDLlxJocZCuNGG9ZbYsacz/DsicxVso0pcME55vJgKz6tWMRkC6ldhNqobG4QmTq8v tJkOXNj9IT00LKeMt3rvpMvTp6zEMlY2VP1OCbruQwXZIaQcU1bd99MmPaEPi+YJpk8wY0tKnkdmj iiqAI=; Received: from debutante.sirena.org.uk ([2001:470:1f1d:6b5::3] helo=debutante) by heliosphere.sirena.org.uk with esmtpsa (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1e1TlB-0000dy-BY; Mon, 09 Oct 2017 08:50:01 +0000 Received: from broonie by debutante with local (Exim 4.89) (envelope-from ) id 1e1TlA-0006Pu-Uc; Mon, 09 Oct 2017 09:50:00 +0100 From: Mark Brown To: Ed Blake In-Reply-To: <20171006145040.13436-3-ed.blake@sondrel.com> Message-Id: Date: Mon, 09 Oct 2017 09:50:00 +0100 Cc: alsa-devel@alsa-project.org, broonie@kernel.org, lgirdwood@gmail.com Subject: [alsa-devel] Applied "ASoC: img-i2s-in: Add runtime PM" to the asoc tree 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 The patch ASoC: img-i2s-in: Add runtime PM has been applied to the asoc tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From f65bb92ca12e72c6ebed20dacaa75ee1f2f0735a Mon Sep 17 00:00:00 2001 From: Ed Blake Date: Fri, 6 Oct 2017 15:50:40 +0100 Subject: [PATCH] ASoC: img-i2s-in: Add runtime PM Add runtime PM to disable the clock when the device is not in use. The ASoC core takes care of the pm_runtime_get_sync / put calls so we just need to provide runtime_suspend / runtime_resume functions and enable runtime PM. Signed-off-by: Ed Blake Signed-off-by: Mark Brown --- sound/soc/img/img-i2s-in.c | 88 +++++++++++++++++++++++++++++++++++++--------- 1 file changed, 71 insertions(+), 17 deletions(-) -- 2.14.1 _______________________________________________ Alsa-devel mailing list Alsa-devel@alsa-project.org http://mailman.alsa-project.org/mailman/listinfo/alsa-devel diff --git a/sound/soc/img/img-i2s-in.c b/sound/soc/img/img-i2s-in.c index 3d151ddda937..d7fbb0a0a28b 100644 --- a/sound/soc/img/img-i2s-in.c +++ b/sound/soc/img/img-i2s-in.c @@ -16,6 +16,7 @@ #include #include #include +#include #include #include @@ -64,6 +65,29 @@ struct img_i2s_in { u32 *suspend_ch_ctl; }; +static int img_i2s_in_runtime_suspend(struct device *dev) +{ + struct img_i2s_in *i2s = dev_get_drvdata(dev); + + clk_disable_unprepare(i2s->clk_sys); + + return 0; +} + +static int img_i2s_in_runtime_resume(struct device *dev) +{ + struct img_i2s_in *i2s = dev_get_drvdata(dev); + int ret; + + ret = clk_prepare_enable(i2s->clk_sys); + if (ret) { + dev_err(dev, "Unable to enable sys clock\n"); + return ret; + } + + return 0; +} + static inline void img_i2s_in_writel(struct img_i2s_in *i2s, u32 val, u32 reg) { writel(val, i2s->base + reg); @@ -281,7 +305,7 @@ static int img_i2s_in_hw_params(struct snd_pcm_substream *substream, static int img_i2s_in_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct img_i2s_in *i2s = snd_soc_dai_get_drvdata(dai); - int i; + int i, ret; u32 chan_control_mask, lrd_set = 0, blkp_set = 0, chan_control_set = 0; u32 reg; @@ -321,6 +345,10 @@ static int img_i2s_in_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) chan_control_mask = IMG_I2S_IN_CH_CTL_CLK_TRANS_MASK; + ret = pm_runtime_get_sync(i2s->dev); + if (ret < 0) + return ret; + for (i = 0; i < i2s->active_channels; i++) img_i2s_in_ch_disable(i2s, i); @@ -340,6 +368,8 @@ static int img_i2s_in_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) for (i = 0; i < i2s->active_channels; i++) img_i2s_in_ch_enable(i2s, i); + pm_runtime_put(i2s->dev); + return 0; } @@ -429,9 +459,15 @@ static int img_i2s_in_probe(struct platform_device *pdev) return PTR_ERR(i2s->clk_sys); } - ret = clk_prepare_enable(i2s->clk_sys); - if (ret) - return ret; + pm_runtime_enable(&pdev->dev); + if (!pm_runtime_enabled(&pdev->dev)) { + ret = img_i2s_in_runtime_resume(&pdev->dev); + if (ret) + goto err_pm_disable; + } + ret = pm_runtime_get_sync(&pdev->dev); + if (ret < 0) + goto err_suspend; i2s->active_channels = 1; i2s->dma_data.addr = res->start + IMG_I2S_IN_RX_FIFO; @@ -449,7 +485,7 @@ static int img_i2s_in_probe(struct platform_device *pdev) if (IS_ERR(rst)) { if (PTR_ERR(rst) == -EPROBE_DEFER) { ret = -EPROBE_DEFER; - goto err_clk_disable; + goto err_suspend; } dev_dbg(dev, "No top level reset found\n"); @@ -471,35 +507,40 @@ static int img_i2s_in_probe(struct platform_device *pdev) IMG_I2S_IN_CH_CTL_JUST_MASK | IMG_I2S_IN_CH_CTL_FW_MASK, IMG_I2S_IN_CH_CTL); + pm_runtime_put(&pdev->dev); + i2s->suspend_ch_ctl = devm_kzalloc(dev, sizeof(*i2s->suspend_ch_ctl) * i2s->max_i2s_chan, GFP_KERNEL); if (!i2s->suspend_ch_ctl) { ret = -ENOMEM; - goto err_clk_disable; + goto err_suspend; } ret = devm_snd_soc_register_component(dev, &img_i2s_in_component, &i2s->dai_driver, 1); if (ret) - goto err_clk_disable; + goto err_suspend; ret = devm_snd_dmaengine_pcm_register(dev, &img_i2s_in_dma_config, 0); if (ret) - goto err_clk_disable; + goto err_suspend; return 0; -err_clk_disable: - clk_disable_unprepare(i2s->clk_sys); +err_suspend: + if (!pm_runtime_enabled(&pdev->dev)) + img_i2s_in_runtime_suspend(&pdev->dev); +err_pm_disable: + pm_runtime_disable(&pdev->dev); return ret; } static int img_i2s_in_dev_remove(struct platform_device *pdev) { - struct img_i2s_in *i2s = platform_get_drvdata(pdev); - - clk_disable_unprepare(i2s->clk_sys); + pm_runtime_disable(&pdev->dev); + if (!pm_runtime_status_suspended(&pdev->dev)) + img_i2s_in_runtime_suspend(&pdev->dev); return 0; } @@ -508,9 +549,15 @@ static int img_i2s_in_dev_remove(struct platform_device *pdev) static int img_i2s_in_suspend(struct device *dev) { struct img_i2s_in *i2s = dev_get_drvdata(dev); - int i; + int i, ret; u32 reg; + if (pm_runtime_status_suspended(dev)) { + ret = img_i2s_in_runtime_resume(dev); + if (ret) + return ret; + } + for (i = 0; i < i2s->max_i2s_chan; i++) { reg = img_i2s_in_ch_readl(i2s, i, IMG_I2S_IN_CH_CTL); i2s->suspend_ch_ctl[i] = reg; @@ -518,7 +565,7 @@ static int img_i2s_in_suspend(struct device *dev) i2s->suspend_ctl = img_i2s_in_readl(i2s, IMG_I2S_IN_CTL); - clk_disable_unprepare(i2s->clk_sys); + img_i2s_in_runtime_suspend(dev); return 0; } @@ -526,10 +573,12 @@ static int img_i2s_in_suspend(struct device *dev) static int img_i2s_in_resume(struct device *dev) { struct img_i2s_in *i2s = dev_get_drvdata(dev); - int i; + int i, ret; u32 reg; - clk_prepare_enable(i2s->clk_sys); + ret = img_i2s_in_runtime_resume(dev); + if (ret) + return ret; for (i = 0; i < i2s->max_i2s_chan; i++) { reg = i2s->suspend_ch_ctl[i]; @@ -538,6 +587,9 @@ static int img_i2s_in_resume(struct device *dev) img_i2s_in_writel(i2s, i2s->suspend_ctl, IMG_I2S_IN_CTL); + if (pm_runtime_status_suspended(dev)) + img_i2s_in_runtime_suspend(dev); + return 0; } #endif @@ -549,6 +601,8 @@ static const struct of_device_id img_i2s_in_of_match[] = { MODULE_DEVICE_TABLE(of, img_i2s_in_of_match); static const struct dev_pm_ops img_i2s_in_pm_ops = { + SET_RUNTIME_PM_OPS(img_i2s_in_runtime_suspend, + img_i2s_in_runtime_resume, NULL) SET_SYSTEM_SLEEP_PM_OPS(img_i2s_in_suspend, img_i2s_in_resume) };