From patchwork Wed Nov 2 08:32:37 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 13027809 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2C6FC4332F for ; Wed, 2 Nov 2022 08:33:04 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230372AbiKBIdD (ORCPT ); Wed, 2 Nov 2022 04:33:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:37134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230331AbiKBIdB (ORCPT ); Wed, 2 Nov 2022 04:33:01 -0400 Received: from mail-pj1-x102e.google.com (mail-pj1-x102e.google.com [IPv6:2607:f8b0:4864:20::102e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 5291B27B01 for ; Wed, 2 Nov 2022 01:32:58 -0700 (PDT) Received: by mail-pj1-x102e.google.com with SMTP id r61-20020a17090a43c300b00212f4e9cccdso1421988pjg.5 for ; Wed, 02 Nov 2022 01:32:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=q2nlS3XahONFZFIAHmPH/AavNAlCb2gKg69yTobdo08=; b=oeMpWeKeP0rveiNwGyuAN4gNDf6JHLEQ6H7aQ7WK5bkqfCdJaus2WQZ0Cae7Uv/Whj hmjZj5wn7hGNTy92X9wOPaRdkvK5gElRihTmougdTTd7kQBjrQ/HWqxFvIm3NXe/53vZ /SQ1IHi4fWZ58LmeMC1USf5Uq+5gMHU1LqUhXWz3TMYL1nHemu91jJfDFV+ajlNoMTzo GfzjJXaoOZki5KVPJqwoTs1/cyFJErlvsvAVrnNxt+YtFn/gvzH+qakawhw4p2zIkdwH /+4D2LsTgiMw+MsE5eC8g+SWurCzNG9cLvqhQaK/J6hujAy5tHtDjb7Fih6Lael72zk9 i8uQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=q2nlS3XahONFZFIAHmPH/AavNAlCb2gKg69yTobdo08=; b=m/fcI7tzWtSvFaDQO9RVAKNw1iKDz/lqdP7XizsjNdho0rIpJDXsNEQHhoPzMUYYyf BOcPUEpPsEbuY9hJ+tJxeb9fPXs9inE1d+P3ReMG1ZoifznpfSMF13jeL/SmaDeNpAxN 3PABaTI22IrXcpB2E0WhwywsF/VvDYQGIHcUH7VOJuxLl62rS+tOrujr+hBKTiBhltvi Zl6IG5/OVh1SW/e9bpVv9OT98Gfasyelr49XZngXlvlmV1pvy9E2MOTa0y+BCXwJRT3e iz1OrXxT13QPXr4T0E43CTfQrnIMKMzIcmVgKsVpMc6pvegaHOG7Y2jR52QkEezyCi17 1AiQ== X-Gm-Message-State: ACrzQf03BTAjGoWcQ39evVbC7jjEBduzSv/zgnsNs6PlsbkWCfsVwcmg XX6YmPdawFoHE1plkkMlqBBi X-Google-Smtp-Source: AMsMyM4ElgaogpH3aOKa4/LTBdF1aWHexA+c5wQiud780R9cduZbExY/WAmOT8CGQs/Mp9sUBCfPpQ== X-Received: by 2002:a17:90a:6d22:b0:213:7e1e:9be0 with SMTP id z31-20020a17090a6d2200b002137e1e9be0mr24188999pjj.17.1667377977781; Wed, 02 Nov 2022 01:32:57 -0700 (PDT) Received: from localhost.localdomain ([117.193.209.178]) by smtp.gmail.com with ESMTPSA id d12-20020a170902654c00b00176acd80f69sm7682256pln.102.2022.11.02.01.32.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Nov 2022 01:32:56 -0700 (PDT) From: Manivannan Sadhasivam To: andersson@kernel.org, viresh.kumar@linaro.org, rafael@kernel.org Cc: johan@kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Manivannan Sadhasivam Subject: [PATCH 1/3] cpufreq: qcom-hw: Allocate qcom_cpufreq_data during probe Date: Wed, 2 Nov 2022 14:02:37 +0530 Message-Id: <20221102083239.53826-2-manivannan.sadhasivam@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221102083239.53826-1-manivannan.sadhasivam@linaro.org> References: <20221102083239.53826-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org qcom_cpufreq_data is allocated based on the number of frequency domains defined in DT which is static and won't change during runtime. There is no real reason to allocate it during the CPU init() callback and deallocate it during exit(). Hence, move the allocation to probe() and use the allocated memory during init(). This also allows us to use devm_platform_get_and_ioremap_resource() helper for acquiring the freq-domain resources from DT. Signed-off-by: Manivannan Sadhasivam --- drivers/cpufreq/qcom-cpufreq-hw.c | 86 +++++++++++++------------------ 1 file changed, 37 insertions(+), 49 deletions(-) diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index a5b3b8d0e164..1842e9facaa1 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -58,6 +58,10 @@ struct qcom_cpufreq_data { bool per_core_dcvs; }; +static struct { + struct qcom_cpufreq_data *data; +} qcom_cpufreq; + static unsigned long cpu_hw_rate, xo_rate; static bool icc_scaling_enabled; @@ -489,8 +493,6 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy) struct of_phandle_args args; struct device_node *cpu_np; struct device *cpu_dev; - struct resource *res; - void __iomem *base; struct qcom_cpufreq_data *data; int ret, index; @@ -512,43 +514,16 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy) return ret; index = args.args[0]; - - res = platform_get_resource(pdev, IORESOURCE_MEM, index); - if (!res) { - dev_err(dev, "failed to get mem resource %d\n", index); - return -ENODEV; - } - - if (!request_mem_region(res->start, resource_size(res), res->name)) { - dev_err(dev, "failed to request resource %pR\n", res); - return -EBUSY; - } - - base = ioremap(res->start, resource_size(res)); - if (!base) { - dev_err(dev, "failed to map resource %pR\n", res); - ret = -ENOMEM; - goto release_region; - } - - data = kzalloc(sizeof(*data), GFP_KERNEL); - if (!data) { - ret = -ENOMEM; - goto unmap_base; - } - data->soc_data = of_device_get_match_data(&pdev->dev); - data->base = base; - data->res = res; + data = &qcom_cpufreq.data[index]; /* HW should be in enabled state to proceed */ - if (!(readl_relaxed(base + data->soc_data->reg_enable) & 0x1)) { + if (!(readl_relaxed(data->base + data->soc_data->reg_enable) & 0x1)) { dev_err(dev, "Domain-%d cpufreq hardware not enabled\n", index); - ret = -ENODEV; - goto error; + return -ENODEV; } - if (readl_relaxed(base + data->soc_data->reg_dcvs_ctrl) & 0x1) + if (readl_relaxed(data->base + data->soc_data->reg_dcvs_ctrl) & 0x1) data->per_core_dcvs = true; qcom_get_related_cpus(index, policy->cpus); @@ -559,14 +534,13 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy) ret = qcom_cpufreq_hw_read_lut(cpu_dev, policy); if (ret) { dev_err(dev, "Domain-%d failed to read LUT\n", index); - goto error; + return ret; } ret = dev_pm_opp_get_opp_count(cpu_dev); if (ret <= 0) { dev_err(cpu_dev, "Failed to add OPPs\n"); - ret = -ENODEV; - goto error; + return -ENODEV; } if (policy_has_boost_freq(policy)) { @@ -575,18 +549,7 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy) dev_warn(cpu_dev, "failed to enable boost: %d\n", ret); } - ret = qcom_cpufreq_hw_lmh_init(policy, index); - if (ret) - goto error; - - return 0; -error: - kfree(data); -unmap_base: - iounmap(base); -release_region: - release_mem_region(res->start, resource_size(res)); - return ret; + return qcom_cpufreq_hw_lmh_init(policy, index); } static int qcom_cpufreq_hw_cpu_exit(struct cpufreq_policy *policy) @@ -643,7 +606,7 @@ static int qcom_cpufreq_hw_driver_probe(struct platform_device *pdev) { struct device *cpu_dev; struct clk *clk; - int ret; + int ret, i, num_domains; clk = clk_get(&pdev->dev, "xo"); if (IS_ERR(clk)) @@ -670,6 +633,31 @@ static int qcom_cpufreq_hw_driver_probe(struct platform_device *pdev) if (ret) return ret; + /* Allocate qcom_cpufreq_data based on the available frequency domains in DT */ + num_domains = of_property_count_elems_of_size(pdev->dev.of_node, "reg", sizeof(u32) * 4); + if (num_domains <= 0) + return num_domains; + + qcom_cpufreq.data = devm_kzalloc(&pdev->dev, sizeof(struct qcom_cpufreq_data) * num_domains, + GFP_KERNEL); + if (!qcom_cpufreq.data) + return -ENOMEM; + + for (i = 0; i < num_domains; i++) { + struct qcom_cpufreq_data *data = &qcom_cpufreq.data[i]; + struct resource *res; + void __iomem *base; + + base = devm_platform_get_and_ioremap_resource(pdev, i, &res); + if (IS_ERR(base)) { + dev_err(&pdev->dev, "Failed to map resource %pR\n", res); + return PTR_ERR(base); + } + + data->base = base; + data->res = res; + } + ret = cpufreq_register_driver(&cpufreq_qcom_hw_driver); if (ret) dev_err(&pdev->dev, "CPUFreq HW driver failed to register\n");