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 X-Spam-Level: X-Spam-Status: No, score=-15.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 5F0DDC4332F for ; Sun, 12 Sep 2021 20:11:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4345661039 for ; Sun, 12 Sep 2021 20:11:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236990AbhILUMX (ORCPT ); Sun, 12 Sep 2021 16:12:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54014 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236835AbhILULu (ORCPT ); Sun, 12 Sep 2021 16:11:50 -0400 Received: from mail-wm1-x32f.google.com (mail-wm1-x32f.google.com [IPv6:2a00:1450:4864:20::32f]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 69C29C0613E3; Sun, 12 Sep 2021 13:10:16 -0700 (PDT) Received: by mail-wm1-x32f.google.com with SMTP id s24so5121777wmh.4; Sun, 12 Sep 2021 13:10:16 -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=kMziebaAeLQX+HJyIYKw3fi1qml9OJEejLLtUc1VAqA=; b=Ei9WKR/GHoqC55QC1McB0O+sSc+ZVrP42+/ld0Yvx1hLAYeGVJcEZP/drVDotJAHlP EW2Xu07jGsJUSSULxk0f7AuCuE/Xj+jm5s977iv7aPnKrRZDjDKc70qnWP7srThXvrLp Ku7S3LOt69sndgi1a9nypmX49Hl2EQNdP/4R6y1g78p6U/K8SmQpKjNn/Dtye5GAhNDv cdOcGWCB5YxsB6himB6JVE/YI7Pg2SiLoKj+gWg19d3PzpQC6OWdmdgRkDXygs8DwMzG wxaSbzQf3jN6TvKkQS6YMQbvcyI6j3QQM5VwEhus4v5GhWWsIlUyJ4lwVDuF99wZK36z vmsA== 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=kMziebaAeLQX+HJyIYKw3fi1qml9OJEejLLtUc1VAqA=; b=IKd3MTLlb7HBg8l+COYahfLWPdX+5gqTYdbyvl3rz5ZVzEII1xIdQ3YKjtQ3NAmxNX sfIbmLEWLVqOz9WOcN/8yw5pcNl/7OQQs70tsw1KU7bZ9E/b9jJcxCWC2Pl2O+a/QOt0 2f7O1m7OGAxxJvRMsfy3IJwXL5OUc4ZxexLEau4RbaoWxvZYHXhp+OXJL/W9vKfgulqu 0KIbjF96lbCoqlL8PeeJvF6OMUr1FwXADyeSRfnFwKOc4GZlJQczbUSypetvMxVNeoxx RBa7i70j6E51G8JIT7IuZMTC+WgtAFR7hBnRFlafwtXnPPgWNfHWNy5+jNBYngJM4iit upRA== X-Gm-Message-State: AOAM533e8vd1OKCC389yi/simimaCqv1RgPT+VRnQrO51Y+aFc1yOAjP KbwZEZ7uZmwoFGJyuQ8imGA= X-Google-Smtp-Source: ABdhPJwjo8d4FxDSXbfmAox/Ybla/jmb3joY5oa54PEnhjnpzCmC70nHAnUmh9uEC9aK11spOGE7IQ== X-Received: by 2002:a1c:f60c:: with SMTP id w12mr8012955wmc.3.1631477415030; Sun, 12 Sep 2021 13:10:15 -0700 (PDT) Received: from localhost.localdomain (46-138-83-36.dynamic.spd-mgts.ru. [46.138.83.36]) by smtp.gmail.com with ESMTPSA id v10sm5463476wrg.15.2021.09.12.13.10.12 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 12 Sep 2021 13:10:14 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Ulf Hansson , Viresh Kumar , Stephen Boyd , Peter De Schrijver , Mikko Perttunen , Peter Chen , Mark Brown , Lee Jones , =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= , Nishanth Menon , Vignesh Raghavendra , Richard Weinberger , Miquel Raynal , Lucas Stach , Stefan Agner , Adrian Hunter , Mauro Carvalho Chehab , Rob Herring , 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-spi@vger.kernel.org, linux-pwm@vger.kernel.org, linux-mtd@lists.infradead.org, linux-mmc@vger.kernel.org, linux-media@vger.kernel.org, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org Subject: [PATCH v11 17/34] bus: tegra-gmi: Add runtime PM and OPP support Date: Sun, 12 Sep 2021 23:08:15 +0300 Message-Id: <20210912200832.12312-18-digetx@gmail.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210912200832.12312-1-digetx@gmail.com> References: <20210912200832.12312-1-digetx@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org The GMI bus on Tegra belongs to the core power domain and we're going to enable GENPD support for the core domain. Now GMI must be resumed using runtime PM API in order to initialize the GMI power state. Add runtime PM and OPP support to the GMI driver. Signed-off-by: Dmitry Osipenko --- drivers/bus/tegra-gmi.c | 52 ++++++++++++++++++++++++++++++++++++----- 1 file changed, 46 insertions(+), 6 deletions(-) diff --git a/drivers/bus/tegra-gmi.c b/drivers/bus/tegra-gmi.c index a6570789f7af..72ef8a8c236b 100644 --- a/drivers/bus/tegra-gmi.c +++ b/drivers/bus/tegra-gmi.c @@ -13,8 +13,11 @@ #include #include #include +#include #include +#include + #define TEGRA_GMI_CONFIG 0x00 #define TEGRA_GMI_CONFIG_GO BIT(31) #define TEGRA_GMI_BUS_WIDTH_32BIT BIT(30) @@ -54,9 +57,9 @@ static int tegra_gmi_enable(struct tegra_gmi *gmi) { int err; - err = clk_prepare_enable(gmi->clk); - if (err < 0) { - dev_err(gmi->dev, "failed to enable clock: %d\n", err); + err = pm_runtime_resume_and_get(gmi->dev); + if (err) { + pm_runtime_disable(gmi->dev); return err; } @@ -83,7 +86,8 @@ static void tegra_gmi_disable(struct tegra_gmi *gmi) writel(config, gmi->base + TEGRA_GMI_CONFIG); reset_control_assert(gmi->rst); - clk_disable_unprepare(gmi->clk); + + pm_runtime_put(gmi->dev); } static int tegra_gmi_parse_dt(struct tegra_gmi *gmi) @@ -213,6 +217,7 @@ static int tegra_gmi_probe(struct platform_device *pdev) if (!gmi) return -ENOMEM; + platform_set_drvdata(pdev, gmi); gmi->dev = dev; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); @@ -232,6 +237,14 @@ static int tegra_gmi_probe(struct platform_device *pdev) return PTR_ERR(gmi->rst); } + err = devm_pm_runtime_enable(gmi->dev); + if (err) + return err; + + err = devm_tegra_core_dev_init_opp_table_common(&pdev->dev); + if (err) + return err; + err = tegra_gmi_parse_dt(gmi); if (err) return err; @@ -247,8 +260,6 @@ static int tegra_gmi_probe(struct platform_device *pdev) return err; } - platform_set_drvdata(pdev, gmi); - return 0; } @@ -262,6 +273,34 @@ static int tegra_gmi_remove(struct platform_device *pdev) return 0; } +static int __maybe_unused tegra_gmi_runtime_resume(struct device *dev) +{ + struct tegra_gmi *gmi = dev_get_drvdata(dev); + int err; + + err = clk_prepare_enable(gmi->clk); + if (err < 0) { + dev_err(gmi->dev, "failed to enable clock: %d\n", err); + return err; + } + + return 0; +} + +static int __maybe_unused tegra_gmi_runtime_suspend(struct device *dev) +{ + struct tegra_gmi *gmi = dev_get_drvdata(dev); + + clk_disable_unprepare(gmi->clk); + + return 0; +} + +static const struct dev_pm_ops tegra_gmi_pm = { + SET_RUNTIME_PM_OPS(tegra_gmi_runtime_suspend, tegra_gmi_runtime_resume, + NULL) +}; + static const struct of_device_id tegra_gmi_id_table[] = { { .compatible = "nvidia,tegra20-gmi", }, { .compatible = "nvidia,tegra30-gmi", }, @@ -275,6 +314,7 @@ static struct platform_driver tegra_gmi_driver = { .driver = { .name = "tegra-gmi", .of_match_table = tegra_gmi_id_table, + .pm = &tegra_gmi_pm, }, }; module_platform_driver(tegra_gmi_driver); -- 2.32.0