From patchwork Thu Jul 25 10:41:33 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Niklas Cassel X-Patchwork-Id: 169695 Delivered-To: patch@linaro.org Received: by 2002:a92:4782:0:0:0:0:0 with SMTP id e2csp11464706ilk; Thu, 25 Jul 2019 03:42:20 -0700 (PDT) X-Google-Smtp-Source: APXvYqxX8lEmjnZi08uDUW5u6Hunp7GcypVECY2DcV0A1ZBWCXdHPVveHaG02Mn8NFM++udgUEI5 X-Received: by 2002:aa7:9f1c:: with SMTP id g28mr15793243pfr.81.1564051340448; Thu, 25 Jul 2019 03:42:20 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1564051340; cv=none; d=google.com; s=arc-20160816; b=ginuJ5QeVpcGNCMw+36cmB5kJ0w7pUeFqgv4UDYGqX9imhP4jMbx8+sid7+x1onzbf aVGl6RRDV1sNDjjR8n/54Uh7CwnQ2q7iR7tdk5nQS7IiKd4ksyxerkrOAdPCSBTJh+Nn 3zl47OifzreH1XEhw2cAZaPjZwqSuf1l1TAJbuTJVMvz57i9Qixom8R/NFkokGwSnBkB vDaL/WqJbsecXEOEDp8b6CUFLJE41QPWH8z+iXpoUnJk8T16Y66Ap6BJCnj2zZEYcFGr YcYAGgccC05Lmb/r00Jtb88ohnjqgjx0sO1bxlEzsmH2O2Bsk57euxIgyRGkPyoZF0lo qHrQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=ODSVjEMilzmw0oUsLQphP6kBlNpfwYrpDQeMD5cqjhU=; b=zR3xPmUuyxoPxFappN9ZsdFwabRR0KiNlv4R1lAzBdyfEKbujdP53atvUKSSuO8tyM NNhPThRM/YcLN6/SDXwfWLk3IBp02TuDlJeR/5jP/31CaKFFTo5bizCC+ewGFVy7qhXx nDowHFn34WtJpkpY3oEpu0YobBUOUBalPS44PuhOD3xYIjO5B53Z8rGl8GcQp2by1BR6 i1OuJla6RtiWVOOzhVbs6eIfI+3YHb2tXJfKLjqE0vN2nAT2WoCEjaM/vrDO/sfqgxLS s2he5bs5JrpLHx7kqVUcBTdlYsWadS81c+PEdZP3Kd3z8M/aHIDvGxIJs9T31rDOD13v yDRg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=cSmg7NNw; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id o39si15277033pje.28.2019.07.25.03.42.20; Thu, 25 Jul 2019 03:42:20 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=cSmg7NNw; spf=pass (google.com: best guess record for domain of linux-pm-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-pm-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2388484AbfGYKmT (ORCPT + 11 others); Thu, 25 Jul 2019 06:42:19 -0400 Received: from mail-lj1-f196.google.com ([209.85.208.196]:33004 "EHLO mail-lj1-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2388393AbfGYKmS (ORCPT ); Thu, 25 Jul 2019 06:42:18 -0400 Received: by mail-lj1-f196.google.com with SMTP id h10so47542856ljg.0 for ; Thu, 25 Jul 2019 03:42:16 -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=ODSVjEMilzmw0oUsLQphP6kBlNpfwYrpDQeMD5cqjhU=; b=cSmg7NNw7N8fLsMuon8fUBjwTziBT12VKBjTNrvrsUhv/PwWVas79m23KzHAkkBl3F GggpQQzzhUovPkr3NxauavPTPoBH8msAe8yQ/ewawbikW9QsamGBIP8HBC4+fgf0G/YC REGKls9DWih/7xKPW/Kfg+Vtz5vnvhuMjsMSu4Za7f/dFePGqWEA86DNk5Te5w9a36OJ qAH+JHYEmJP31HCr8w2fPIgwqCR37w1CkoM/T0ny++RKi+EgZ0icBLCQ9p90f8ZP+/DR XVRpdjevN5y7ONyn7QQjLn8d8y558ZzGx+3N2pmHRozMlFe4eiVFvzN1+yLyn1zBKqD7 mvJA== 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=ODSVjEMilzmw0oUsLQphP6kBlNpfwYrpDQeMD5cqjhU=; b=cLuj4YlmxfxCJOczE8/XcBXEThWghBH0eYj/QUq8oMSmjUapEKuzDpfE5x9mKD837w dHyO8jW3RhUMXs6SNnDkCvAPDWRVinXZVoPhGQHMsG3zUkssrQDqyJGLlDyUdcobi7QD mTz4dUWlcPkZqUh6X5fuP75PVEJFX+Y8uDTc8BdjuBP5s/kVvakQi1QrEeS81mrj/HhN gvuik5DOWqe3UJXckrWxVxj7+H769lXji3ISCs9krd9KreQFg79rsi9B2gIqf8Zno55b qdaqCr4nojoXh5Wf03jJPCkXJPhjW/j+b392C44+rtcyPU26jMfOAex8Ell8QxY+plRg mO6Q== X-Gm-Message-State: APjAAAVQjuVidORKFjKVho5bgW+8K20yayVdmagFSgLEhZ55y+lEldZz iLECXa16Yy1/AbiM264R3seW1w== X-Received: by 2002:a2e:87d0:: with SMTP id v16mr6293419ljj.24.1564051335646; Thu, 25 Jul 2019 03:42:15 -0700 (PDT) Received: from localhost.localdomain (ua-83-226-44-230.bbcust.telenor.se. [83.226.44.230]) by smtp.gmail.com with ESMTPSA id h1sm7451290lfj.21.2019.07.25.03.42.14 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 25 Jul 2019 03:42:15 -0700 (PDT) From: Niklas Cassel To: Andy Gross , Ilia Lin , "Rafael J. Wysocki" , Viresh Kumar Cc: linux-arm-msm@vger.kernel.org, jorge.ramirez-ortiz@linaro.org, sboyd@kernel.org, vireshk@kernel.org, bjorn.andersson@linaro.org, ulf.hansson@linaro.org, Niklas Cassel , linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 05/14] cpufreq: qcom: Refactor the driver to make it easier to extend Date: Thu, 25 Jul 2019 12:41:33 +0200 Message-Id: <20190725104144.22924-6-niklas.cassel@linaro.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190725104144.22924-1-niklas.cassel@linaro.org> References: <20190725104144.22924-1-niklas.cassel@linaro.org> MIME-Version: 1.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Refactor the driver to make it easier to extend in a later commit. Create a driver struct to collect all common resources, in order to make it easier to free up all common resources. Create a driver match_data struct to make it easier to extend the driver with support for new features that might only be supported on certain SoCs. Co-developed-by: Jorge Ramirez-Ortiz Signed-off-by: Jorge Ramirez-Ortiz Signed-off-by: Niklas Cassel Reviewed-by: Ilia Lin --- Changes since V1: -Picked up tags. -Fixed an incorrectly placed of_node_put(). drivers/cpufreq/qcom-cpufreq-nvmem.c | 123 +++++++++++++++++---------- 1 file changed, 79 insertions(+), 44 deletions(-) -- 2.21.0 diff --git a/drivers/cpufreq/qcom-cpufreq-nvmem.c b/drivers/cpufreq/qcom-cpufreq-nvmem.c index fd08120768af..2d798a1685c5 100644 --- a/drivers/cpufreq/qcom-cpufreq-nvmem.c +++ b/drivers/cpufreq/qcom-cpufreq-nvmem.c @@ -43,6 +43,20 @@ enum _msm8996_version { NUM_OF_MSM8996_VERSIONS, }; +struct qcom_cpufreq_drv; + +struct qcom_cpufreq_match_data { + int (*get_version)(struct device *cpu_dev, + struct nvmem_cell *speedbin_nvmem, + struct qcom_cpufreq_drv *drv); +}; + +struct qcom_cpufreq_drv { + struct opp_table **opp_tables; + u32 versions; + const struct qcom_cpufreq_match_data *data; +}; + static struct platform_device *cpufreq_dt_pdev, *cpufreq_pdev; static enum _msm8996_version qcom_cpufreq_get_msm_id(void) @@ -76,7 +90,7 @@ static enum _msm8996_version qcom_cpufreq_get_msm_id(void) static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev, struct nvmem_cell *speedbin_nvmem, - u32 *versions) + struct qcom_cpufreq_drv *drv) { size_t len; u8 *speedbin; @@ -94,10 +108,10 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev, switch (msm8996_version) { case MSM8996_V3: - *versions = 1 << (unsigned int)(*speedbin); + drv->versions = 1 << (unsigned int)(*speedbin); break; case MSM8996_SG: - *versions = 1 << ((unsigned int)(*speedbin) + 4); + drv->versions = 1 << ((unsigned int)(*speedbin) + 4); break; default: BUG(); @@ -108,17 +122,17 @@ static int qcom_cpufreq_kryo_name_version(struct device *cpu_dev, return 0; } +static const struct qcom_cpufreq_match_data match_data_kryo = { + .get_version = qcom_cpufreq_kryo_name_version, +}; + static int qcom_cpufreq_probe(struct platform_device *pdev) { - struct opp_table **opp_tables; - int (*get_version)(struct device *cpu_dev, - struct nvmem_cell *speedbin_nvmem, - u32 *versions); + struct qcom_cpufreq_drv *drv; struct nvmem_cell *speedbin_nvmem; struct device_node *np; struct device *cpu_dev; unsigned cpu; - u32 versions; const struct of_device_id *match; int ret; @@ -126,11 +140,6 @@ static int qcom_cpufreq_probe(struct platform_device *pdev) if (!cpu_dev) return -ENODEV; - match = pdev->dev.platform_data; - get_version = match->data; - if (!get_version) - return -ENODEV; - np = dev_pm_opp_of_get_opp_desc_node(cpu_dev); if (!np) return -ENOENT; @@ -141,23 +150,43 @@ static int qcom_cpufreq_probe(struct platform_device *pdev) return -ENOENT; } - speedbin_nvmem = of_nvmem_cell_get(np, NULL); - of_node_put(np); - if (IS_ERR(speedbin_nvmem)) { - if (PTR_ERR(speedbin_nvmem) != -EPROBE_DEFER) - dev_err(cpu_dev, "Could not get nvmem cell: %ld\n", - PTR_ERR(speedbin_nvmem)); - return PTR_ERR(speedbin_nvmem); + drv = kzalloc(sizeof(*drv), GFP_KERNEL); + if (!drv) + return -ENOMEM; + + match = pdev->dev.platform_data; + drv->data = match->data; + if (!drv->data) { + ret = -ENODEV; + goto free_drv; } - ret = get_version(cpu_dev, speedbin_nvmem, &versions); - nvmem_cell_put(speedbin_nvmem); - if (ret) - return ret; + if (drv->data->get_version) { + speedbin_nvmem = of_nvmem_cell_get(np, NULL); + if (IS_ERR(speedbin_nvmem)) { + if (PTR_ERR(speedbin_nvmem) != -EPROBE_DEFER) + dev_err(cpu_dev, + "Could not get nvmem cell: %ld\n", + PTR_ERR(speedbin_nvmem)); + ret = PTR_ERR(speedbin_nvmem); + goto free_drv; + } - opp_tables = kcalloc(num_possible_cpus(), sizeof(*opp_tables), GFP_KERNEL); - if (!opp_tables) - return -ENOMEM; + ret = drv->data->get_version(cpu_dev, speedbin_nvmem, drv); + if (ret) { + nvmem_cell_put(speedbin_nvmem); + goto free_drv; + } + nvmem_cell_put(speedbin_nvmem); + } + of_node_put(np); + + drv->opp_tables = kcalloc(num_possible_cpus(), sizeof(*drv->opp_tables), + GFP_KERNEL); + if (!drv->opp_tables) { + ret = -ENOMEM; + goto free_drv; + } for_each_possible_cpu(cpu) { cpu_dev = get_cpu_device(cpu); @@ -166,19 +195,23 @@ static int qcom_cpufreq_probe(struct platform_device *pdev) goto free_opp; } - opp_tables[cpu] = dev_pm_opp_set_supported_hw(cpu_dev, - &versions, 1); - if (IS_ERR(opp_tables[cpu])) { - ret = PTR_ERR(opp_tables[cpu]); - dev_err(cpu_dev, "Failed to set supported hardware\n"); - goto free_opp; + if (drv->data->get_version) { + drv->opp_tables[cpu] = + dev_pm_opp_set_supported_hw(cpu_dev, + &drv->versions, 1); + if (IS_ERR(drv->opp_tables[cpu])) { + ret = PTR_ERR(drv->opp_tables[cpu]); + dev_err(cpu_dev, + "Failed to set supported hardware\n"); + goto free_opp; + } } } cpufreq_dt_pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0); if (!IS_ERR(cpufreq_dt_pdev)) { - platform_set_drvdata(pdev, opp_tables); + platform_set_drvdata(pdev, drv); return 0; } @@ -187,26 +220,30 @@ static int qcom_cpufreq_probe(struct platform_device *pdev) free_opp: for_each_possible_cpu(cpu) { - if (IS_ERR_OR_NULL(opp_tables[cpu])) + if (IS_ERR_OR_NULL(drv->opp_tables[cpu])) break; - dev_pm_opp_put_supported_hw(opp_tables[cpu]); + dev_pm_opp_put_supported_hw(drv->opp_tables[cpu]); } - kfree(opp_tables); + kfree(drv->opp_tables); +free_drv: + kfree(drv); return ret; } static int qcom_cpufreq_remove(struct platform_device *pdev) { - struct opp_table **opp_tables = platform_get_drvdata(pdev); + struct qcom_cpufreq_drv *drv = platform_get_drvdata(pdev); unsigned int cpu; platform_device_unregister(cpufreq_dt_pdev); for_each_possible_cpu(cpu) - dev_pm_opp_put_supported_hw(opp_tables[cpu]); + if (drv->opp_tables[cpu]) + dev_pm_opp_put_supported_hw(drv->opp_tables[cpu]); - kfree(opp_tables); + kfree(drv->opp_tables); + kfree(drv); return 0; } @@ -220,10 +257,8 @@ static struct platform_driver qcom_cpufreq_driver = { }; static const struct of_device_id qcom_cpufreq_match_list[] __initconst = { - { .compatible = "qcom,apq8096", - .data = qcom_cpufreq_kryo_name_version }, - { .compatible = "qcom,msm8996", - .data = qcom_cpufreq_kryo_name_version }, + { .compatible = "qcom,apq8096", .data = &match_data_kryo }, + { .compatible = "qcom,msm8996", .data = &match_data_kryo }, {}, };