From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3B236C4332F for ; Sun, 26 Sep 2021 22:43:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 2584360E76 for ; Sun, 26 Sep 2021 22:43:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232590AbhIZWpZ (ORCPT ); Sun, 26 Sep 2021 18:45:25 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43414 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231337AbhIZWo1 (ORCPT ); Sun, 26 Sep 2021 18:44:27 -0400 Received: from mail-lf1-x12e.google.com (mail-lf1-x12e.google.com [IPv6:2a00:1450:4864:20::12e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D74D4C061771; Sun, 26 Sep 2021 15:42:49 -0700 (PDT) Received: by mail-lf1-x12e.google.com with SMTP id g41so68400960lfv.1; Sun, 26 Sep 2021 15:42:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=d07O0PTI8yOarAA3b3qtuOC+53W1id0Cs3+xSBQH71U=; b=d0/rmSkI50Ulam7pZursX1HcKI0ezKG4XvgVt/Mp+o/jIFbheIiM0WGCLcIV4rJd4N 0RODhP9+EdXTILs0tFG6AUrEOf4Hdw5hNr3cQxJ0RQ7ibnKJnHC/YlV5SI/hbLITLz2g f/HYHf2yDjaioXC1yEU+AXxLgKiDLc763EQiwkgEAj2PXIlgy2wEnxev1RhhEubmb3HL wbHtIR9Oj3XFdsz1Ssxk4ugYMTQ8dqfWEuxO+FJ23K3UatZmgcOf4YewvKnDJ+xB9bOh LPDMzaycg44pVumsAAM3SBMy01UP+9OwV1j0hD6CGZN29I7zUGl0lqQfbF0kwg0do9c8 /FRg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=d07O0PTI8yOarAA3b3qtuOC+53W1id0Cs3+xSBQH71U=; b=MC2itBHjl4f9b3aIJrHOG68KbsQgYMw9+9QMuhpcqYbVWjGyot2E+3sY7KSkxD9ht8 yHF9qCYRsHiS9wi2zoHnLPJlIUzb99jbKu2vJF+0I+poLwMMgupT25FIoRcYnvlKoIc4 gCU52ZC0d8cYbrc4E5rCCE1mfv3ts03ubn47C3Lx9/AEAF6FubLnZ9n8dgA9XA6m7otM mS62fATWc6PpxY8C4fDubORp+MxOPkTSLxeNnz4pQh+TfemgbDoXdyufICTjkma/wIj6 5fvjWGb0LUw21Ha8ZkFeXodBf+b1UlJ+gDYtUIJgYENvCUG003dtErLJ1J8ZbCzu4L5W xS7g== X-Gm-Message-State: AOAM531AYQXhlOcSgPGuFEs+MjL/yV1m11Ww/0CLQLdDiW/1AUFgkmk9 hFF3fGEVXSV3waInJb8tX0g= X-Google-Smtp-Source: ABdhPJzyWI0aEoBtHB/9xutc4y7nuHYW8cA1Jt3gMWcbOF72hPVjsvtw+K0Q+GDBaxeV4df1WAHcsQ== X-Received: by 2002:a05:651c:11cf:: with SMTP id z15mr25356439ljo.69.1632696168291; Sun, 26 Sep 2021 15:42:48 -0700 (PDT) Received: from localhost.localdomain (46-138-80-108.dynamic.spd-mgts.ru. [46.138.80.108]) by smtp.gmail.com with ESMTPSA id m10sm1408899lfr.272.2021.09.26.15.42.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 Sep 2021 15:42:48 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Lee Jones , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Nishanth Menon , Adrian Hunter , Michael Turquette Cc: linux-kernel@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org, linux-usb@vger.kernel.org, linux-staging@lists.linux.dev, linux-pwm@vger.kernel.org, linux-mmc@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Mark Brown , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Mauro Carvalho Chehab , David Heidelberg Subject: [PATCH v13 19/35] mmc: sdhci-tegra: Add runtime PM and OPP support Date: Mon, 27 Sep 2021 01:40:42 +0300 Message-Id: <20210926224058.1252-20-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210926224058.1252-1-digetx@gmail.com> References: <20210926224058.1252-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The SDHCI on Tegra belongs to the core power domain and we're going to enable GENPD support for the core domain. Now SDHCI must be resumed using runtime PM API in order to initialize the SDHCI power state. The SDHCI clock rate must be changed using OPP API that will reconfigure the power domain performance state in accordance to the rate. Add runtime PM and OPP support to the SDHCI driver. Signed-off-by: Dmitry Osipenko --- drivers/mmc/host/sdhci-tegra.c | 82 +++++++++++++++++++++++++++------- 1 file changed, 66 insertions(+), 16 deletions(-) diff --git a/drivers/mmc/host/sdhci-tegra.c b/drivers/mmc/host/sdhci-tegra.c index a5001875876b..6cf3712bf0a6 100644 --- a/drivers/mmc/host/sdhci-tegra.c +++ b/drivers/mmc/host/sdhci-tegra.c @@ -15,6 +15,8 @@ #include #include #include +#include +#include #include #include #include @@ -24,6 +26,8 @@ #include #include +#include + #include "sdhci-pltfm.h" #include "cqhci.h" @@ -760,7 +764,9 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock) { struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); struct sdhci_tegra *tegra_host = sdhci_pltfm_priv(pltfm_host); + struct device *dev = mmc_dev(host->mmc); unsigned long host_clk; + int err; if (!clock) return sdhci_set_clock(host, clock); @@ -778,7 +784,12 @@ static void tegra_sdhci_set_clock(struct sdhci_host *host, unsigned int clock) * from clk_get_rate() is used. */ host_clk = tegra_host->ddr_signaling ? clock * 2 : clock; - clk_set_rate(pltfm_host->clk, host_clk); + + err = dev_pm_opp_set_rate(dev, host_clk); + if (err) + dev_err(dev, "failed to set clk rate to %luHz: %d\n", + host_clk, err); + tegra_host->curr_clk_rate = host_clk; if (tegra_host->ddr_signaling) host->max_clk = host_clk; @@ -1705,7 +1716,6 @@ static int sdhci_tegra_probe(struct platform_device *pdev) "failed to get clock\n"); goto err_clk_get; } - clk_prepare_enable(clk); pltfm_host->clk = clk; tegra_host->rst = devm_reset_control_get_exclusive(&pdev->dev, @@ -1716,15 +1726,25 @@ static int sdhci_tegra_probe(struct platform_device *pdev) goto err_rst_get; } + pm_runtime_enable(&pdev->dev); + + rc = devm_tegra_core_dev_init_opp_table_common(&pdev->dev); + if (rc) + goto err_pm_get; + + rc = pm_runtime_resume_and_get(&pdev->dev); + if (rc) + goto err_pm_get; + rc = reset_control_assert(tegra_host->rst); if (rc) - goto err_rst_get; + goto err_rst_assert; usleep_range(2000, 4000); rc = reset_control_deassert(tegra_host->rst); if (rc) - goto err_rst_get; + goto err_rst_assert; usleep_range(2000, 4000); @@ -1736,8 +1756,11 @@ static int sdhci_tegra_probe(struct platform_device *pdev) err_add_host: reset_control_assert(tegra_host->rst); +err_rst_assert: + pm_runtime_put(&pdev->dev); +err_pm_get: + pm_runtime_disable(&pdev->dev); err_rst_get: - clk_disable_unprepare(pltfm_host->clk); err_clk_get: clk_disable_unprepare(tegra_host->tmclk); err_power_req: @@ -1756,19 +1779,38 @@ static int sdhci_tegra_remove(struct platform_device *pdev) reset_control_assert(tegra_host->rst); usleep_range(2000, 4000); - clk_disable_unprepare(pltfm_host->clk); - clk_disable_unprepare(tegra_host->tmclk); + pm_runtime_put(&pdev->dev); + pm_runtime_disable(&pdev->dev); + + clk_disable_unprepare(tegra_host->tmclk); sdhci_pltfm_free(pdev); return 0; } -#ifdef CONFIG_PM_SLEEP -static int __maybe_unused sdhci_tegra_suspend(struct device *dev) +static int __maybe_unused sdhci_tegra_runtime_suspend(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + clk_disable_unprepare(pltfm_host->clk); + + return 0; +} + +static int __maybe_unused sdhci_tegra_runtime_resume(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); + struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); + + return clk_prepare_enable(pltfm_host->clk); +} + +#ifdef CONFIG_PM_SLEEP +static int sdhci_tegra_suspend(struct device *dev) +{ + struct sdhci_host *host = dev_get_drvdata(dev); int ret; if (host->mmc->caps2 & MMC_CAP2_CQE) { @@ -1783,17 +1825,22 @@ static int __maybe_unused sdhci_tegra_suspend(struct device *dev) return ret; } - clk_disable_unprepare(pltfm_host->clk); + ret = pm_runtime_force_suspend(dev); + if (ret) { + sdhci_resume_host(host); + cqhci_resume(host->mmc); + return ret; + } + return 0; } -static int __maybe_unused sdhci_tegra_resume(struct device *dev) +static int sdhci_tegra_resume(struct device *dev) { struct sdhci_host *host = dev_get_drvdata(dev); - struct sdhci_pltfm_host *pltfm_host = sdhci_priv(host); int ret; - ret = clk_prepare_enable(pltfm_host->clk); + ret = pm_runtime_force_resume(dev); if (ret) return ret; @@ -1812,13 +1859,16 @@ static int __maybe_unused sdhci_tegra_resume(struct device *dev) suspend_host: sdhci_suspend_host(host); disable_clk: - clk_disable_unprepare(pltfm_host->clk); + pm_runtime_force_suspend(dev); return ret; } #endif -static SIMPLE_DEV_PM_OPS(sdhci_tegra_dev_pm_ops, sdhci_tegra_suspend, - sdhci_tegra_resume); +static const struct dev_pm_ops sdhci_tegra_dev_pm_ops = { + SET_RUNTIME_PM_OPS(sdhci_tegra_runtime_suspend, sdhci_tegra_runtime_resume, + NULL) + SET_SYSTEM_SLEEP_PM_OPS(sdhci_tegra_suspend, sdhci_tegra_resume) +}; static struct platform_driver sdhci_tegra_driver = { .driver = { -- 2.32.0