From patchwork Fri Jul 9 01:30:40 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Baryshkov X-Patchwork-Id: 472508 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=-19.0 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, 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 5BB69C47E4D for ; Fri, 9 Jul 2021 01:31:08 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1248B6162B for ; Fri, 9 Jul 2021 01:31:08 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230336AbhGIBdi (ORCPT ); Thu, 8 Jul 2021 21:33:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55020 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230367AbhGIBdf (ORCPT ); Thu, 8 Jul 2021 21:33:35 -0400 Received: from mail-lj1-x22e.google.com (mail-lj1-x22e.google.com [IPv6:2a00:1450:4864:20::22e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 621C9C061766 for ; Thu, 8 Jul 2021 18:30:52 -0700 (PDT) Received: by mail-lj1-x22e.google.com with SMTP id u25so5350315ljj.11 for ; Thu, 08 Jul 2021 18:30:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=89M3kJH8Z+ezz3X5xX4Jb+p6yEZY6o3ZbKwB3aRtLuw=; b=yoiW7ZFuSlfNOroLD2nvWqab6XWApbxovd9lF6axBaihMwQRpP5yZvXh1v5FrYjkfu t/EeMmokjrecX5fojZ6cQK1C3ZMr/TpiyNMvsv2M5yEC1xgBnmA3/i7u/2OK+uS6lxDy RiMuy8bhw22etISLo/TvxZmR2qNbjEhQ/urtbT0PAEzLFCYJkFAM9HTmRD/9QFo6yprM CGfwJhVLfDEMgc/WBrtKE2t4lza23imUcUn5ryHko2+KrT5brI4Gd9nRPKGAtxE6WExW g7jnsvWz1Tqe+Ewn0oMyTS/IbqX6jsOg8MBHLAIwIcMNEgjUloPNs8UTReO6ee/8IYhh ByHA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=89M3kJH8Z+ezz3X5xX4Jb+p6yEZY6o3ZbKwB3aRtLuw=; b=REOYo5Sc9+PIpDHz+o+9R83gvI7xDGDMcgskigzvSX8/dR2OSmWFbPb3E+2Xcd8n7n D1ayuceKsb3FEQBNvoIW9qs3XFn/MIUDgjagAVBiHMSBtFFe0OO6qsyIjB00KwhTdihp 7Dkhm8RC31eeCPBqINj3MUaLMYpwIhgVy0ocy+oz31IKZrl2WXbzuGqRWqY229jGj2o8 h/8EOnUlOo/Qw8RRY+a2/qok9tkOI0NsoZTK/HfiAhBabK5vl9g/Bkl0A277gEOuPEDJ sHnDJm5ZyHyxoJRBAq9eaWB1WFcx9B+kGNmf7do/PGQQVPxQrNYEEoqOdwwkZw6raP9Q m7eA== X-Gm-Message-State: AOAM530+ODHIxgdNTZv7uzMcS8w5HBHpIl+uGyeZ3y9tMUhkZkF8xy5a 4obf5IowSmkg32SbZEH7/sn4tg== X-Google-Smtp-Source: ABdhPJzXXUETOMzQ3cJvd4xc+brSmZp2RHVeNURZ3nwD9/LEPByiDCUB1Xg17f/TFg7PhGPsTi5nWg== X-Received: by 2002:a2e:7302:: with SMTP id o2mr18519317ljc.245.1625794250704; Thu, 08 Jul 2021 18:30:50 -0700 (PDT) Received: from eriador.lan ([37.153.55.125]) by smtp.gmail.com with ESMTPSA id u16sm405637ljj.113.2021.07.08.18.30.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Jul 2021 18:30:50 -0700 (PDT) From: Dmitry Baryshkov To: Andy Gross , Bjorn Andersson , Rob Herring , Stephen Boyd , Taniya Das , Jonathan Marek , Michael Turquette Cc: linux-arm-msm@vger.kernel.org, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, Bryan O'Donoghue , Mark Brown , Ulf Hansson , linux-kernel@vger.kernel.org Subject: [PATCH v2 4/7] clk: qcom: gdsc: enable optional power domain support Date: Fri, 9 Jul 2021 04:30:40 +0300 Message-Id: <20210709013043.495233-5-dmitry.baryshkov@linaro.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210709013043.495233-1-dmitry.baryshkov@linaro.org> References: <20210709013043.495233-1-dmitry.baryshkov@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org On sm8250 dispcc and videocc registers are powered up by the MMCX power domain. Currently we used a regulator to enable this domain on demand, however this has some consequences, as genpd code is not reentrant. Teach Qualcomm clock controller code about setting up power domains and using them for gdsc control. Signed-off-by: Dmitry Baryshkov --- drivers/clk/qcom/common.c | 37 +++++++++++++++++++++++++++++++------ drivers/clk/qcom/gdsc.c | 5 +++++ 2 files changed, 36 insertions(+), 6 deletions(-) diff --git a/drivers/clk/qcom/common.c b/drivers/clk/qcom/common.c index 60d2a78d1395..43d8f8feeb3c 100644 --- a/drivers/clk/qcom/common.c +++ b/drivers/clk/qcom/common.c @@ -10,6 +10,7 @@ #include #include #include +#include #include "common.h" #include "clk-rcg.h" @@ -224,6 +225,11 @@ static struct clk_hw *qcom_cc_clk_hw_get(struct of_phandle_args *clkspec, return cc->rclks[idx] ? &cc->rclks[idx]->hw : NULL; } +static void qcom_cc_pm_runtime_disable(void *data) +{ + pm_runtime_disable(data); +} + int qcom_cc_really_probe(struct platform_device *pdev, const struct qcom_cc_desc *desc, struct regmap *regmap) { @@ -241,6 +247,18 @@ int qcom_cc_really_probe(struct platform_device *pdev, if (!cc) return -ENOMEM; + pm_runtime_enable(dev); + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + pm_runtime_put(dev); + pm_runtime_disable(dev); + return ret; + } + + ret = devm_add_action_or_reset(dev, qcom_cc_pm_runtime_disable, dev); + if (ret) + goto err; + reset = &cc->reset; reset->rcdev.of_node = dev->of_node; reset->rcdev.ops = &qcom_reset_ops; @@ -251,7 +269,7 @@ int qcom_cc_really_probe(struct platform_device *pdev, ret = devm_reset_controller_register(dev, &reset->rcdev); if (ret) - return ret; + goto err; if (desc->gdscs && desc->num_gdscs) { scd = devm_kzalloc(dev, sizeof(*scd), GFP_KERNEL); @@ -262,11 +280,11 @@ int qcom_cc_really_probe(struct platform_device *pdev, scd->num = desc->num_gdscs; ret = gdsc_register(scd, &reset->rcdev, regmap); if (ret) - return ret; + goto err; ret = devm_add_action_or_reset(dev, qcom_cc_gdsc_unregister, scd); if (ret) - return ret; + goto err; } cc->rclks = rclks; @@ -277,7 +295,7 @@ int qcom_cc_really_probe(struct platform_device *pdev, for (i = 0; i < num_clk_hws; i++) { ret = devm_clk_hw_register(dev, clk_hws[i]); if (ret) - return ret; + goto err; } for (i = 0; i < num_clks; i++) { @@ -286,14 +304,21 @@ int qcom_cc_really_probe(struct platform_device *pdev, ret = devm_clk_register_regmap(dev, rclks[i]); if (ret) - return ret; + goto err; } ret = devm_of_clk_add_hw_provider(dev, qcom_cc_clk_hw_get, cc); if (ret) - return ret; + goto err; + + pm_runtime_put(dev); return 0; + +err: + pm_runtime_put(dev); + + return ret; } EXPORT_SYMBOL_GPL(qcom_cc_really_probe); diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c index 51ed640e527b..9401d01533c8 100644 --- a/drivers/clk/qcom/gdsc.c +++ b/drivers/clk/qcom/gdsc.c @@ -427,6 +427,7 @@ int gdsc_register(struct gdsc_desc *desc, continue; scs[i]->regmap = regmap; scs[i]->rcdev = rcdev; + scs[i]->pd.dev.parent = desc->dev; ret = gdsc_init(scs[i]); if (ret) return ret; @@ -439,6 +440,8 @@ int gdsc_register(struct gdsc_desc *desc, continue; if (scs[i]->parent) pm_genpd_add_subdomain(scs[i]->parent, &scs[i]->pd); + else if (!IS_ERR_OR_NULL(dev->pm_domain)) + pm_genpd_add_subdomain(pd_to_genpd(dev->pm_domain), &scs[i]->pd); } return of_genpd_add_provider_onecell(dev->of_node, data); @@ -457,6 +460,8 @@ void gdsc_unregister(struct gdsc_desc *desc) continue; if (scs[i]->parent) pm_genpd_remove_subdomain(scs[i]->parent, &scs[i]->pd); + else if (!IS_ERR_OR_NULL(dev->pm_domain)) + pm_genpd_remove_subdomain(pd_to_genpd(dev->pm_domain), &scs[i]->pd); } of_genpd_del_provider(dev->of_node); }