From patchwork Thu Jan 16 15:20:30 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 213024 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, 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 225ECC33CB7 for ; Thu, 16 Jan 2020 15:21:28 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E74A52081E for ; Thu, 16 Jan 2020 15:21:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726957AbgAPPVX (ORCPT ); Thu, 16 Jan 2020 10:21:23 -0500 Received: from foss.arm.com ([217.140.110.172]:51048 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726440AbgAPPVX (ORCPT ); Thu, 16 Jan 2020 10:21:23 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A25AC13A1; Thu, 16 Jan 2020 07:21:22 -0800 (PST) Received: from e123648.arm.com (unknown [10.37.12.156]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 7BD633F68E; Thu, 16 Jan 2020 07:21:12 -0800 (PST) From: lukasz.luba@arm.com To: linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dri-devel@lists.freedesktop.org, linux-omap@vger.kernel.org, linux-mediatek@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-imx@nxp.com Cc: Morten.Rasmussen@arm.com, Dietmar.Eggemann@arm.com, Chris.Redpath@arm.com, ionela.voinescu@arm.com, javi.merino@arm.com, cw00.choi@samsung.com, b.zolnierkie@samsung.com, rjw@rjwysocki.net, sudeep.holla@arm.com, viresh.kumar@linaro.org, nm@ti.com, sboyd@kernel.org, rui.zhang@intel.com, amit.kucheria@verdurent.com, daniel.lezcano@linaro.org, mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, rostedt@goodmis.org, qperret@google.com, bsegall@google.com, mgorman@suse.de, shawnguo@kernel.org, s.hauer@pengutronix.de, festevam@gmail.com, kernel@pengutronix.de, khilman@kernel.org, agross@kernel.org, bjorn.andersson@linaro.org, robh@kernel.org, matthias.bgg@gmail.com, steven.price@arm.com, tomeu.vizoso@collabora.com, alyssa.rosenzweig@collabora.com, airlied@linux.ie, daniel@ffwll.ch, lukasz.luba@arm.com, patrick.bellasi@matbug.net Subject: [PATCH 2/4] OPP: change parameter to device pointer in dev_pm_opp_of_register_em() Date: Thu, 16 Jan 2020 15:20:30 +0000 Message-Id: <20200116152032.11301-3-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200116152032.11301-1-lukasz.luba@arm.com> References: <20200116152032.11301-1-lukasz.luba@arm.com> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org From: Lukasz Luba Drop the CPU specific interface with cpumask and switch to struct device. The Energy Model framework supports both: CPUs and devfreq devices. The new interface provides easy way to create a Energy Model (EM), which then might be used in i.e. thermal subsystem. Signed-off-by: Lukasz Luba --- drivers/cpufreq/cpufreq-dt.c | 2 +- drivers/cpufreq/imx6q-cpufreq.c | 2 +- drivers/cpufreq/mediatek-cpufreq.c | 2 +- drivers/cpufreq/omap-cpufreq.c | 2 +- drivers/cpufreq/qcom-cpufreq-hw.c | 2 +- drivers/cpufreq/scpi-cpufreq.c | 2 +- drivers/opp/of.c | 38 +++++++++++++++--------------- include/linux/pm_opp.h | 13 ++++++++-- 8 files changed, 36 insertions(+), 27 deletions(-) diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index d2b5f062a07b..a0db2c4c922a 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -275,7 +275,7 @@ static int cpufreq_init(struct cpufreq_policy *policy) policy->cpuinfo.transition_latency = transition_latency; policy->dvfs_possible_from_any_cpu = true; - dev_pm_opp_of_register_em(policy->cpus); + dev_pm_opp_of_register_em(cpu_dev); return 0; diff --git a/drivers/cpufreq/imx6q-cpufreq.c b/drivers/cpufreq/imx6q-cpufreq.c index 648a09a1778a..e89a277ea385 100644 --- a/drivers/cpufreq/imx6q-cpufreq.c +++ b/drivers/cpufreq/imx6q-cpufreq.c @@ -193,7 +193,7 @@ static int imx6q_cpufreq_init(struct cpufreq_policy *policy) policy->clk = clks[ARM].clk; cpufreq_generic_init(policy, freq_table, transition_latency); policy->suspend_freq = max_freq; - dev_pm_opp_of_register_em(policy->cpus); + dev_pm_opp_of_register_em(cpu_dev); return 0; } diff --git a/drivers/cpufreq/mediatek-cpufreq.c b/drivers/cpufreq/mediatek-cpufreq.c index 0c98dd08273d..946415f52c50 100644 --- a/drivers/cpufreq/mediatek-cpufreq.c +++ b/drivers/cpufreq/mediatek-cpufreq.c @@ -448,7 +448,7 @@ static int mtk_cpufreq_init(struct cpufreq_policy *policy) policy->driver_data = info; policy->clk = info->cpu_clk; - dev_pm_opp_of_register_em(policy->cpus); + dev_pm_opp_of_register_em(info->cpu_dev); return 0; } diff --git a/drivers/cpufreq/omap-cpufreq.c b/drivers/cpufreq/omap-cpufreq.c index 8d14b42a8c6f..d606b6f9296b 100644 --- a/drivers/cpufreq/omap-cpufreq.c +++ b/drivers/cpufreq/omap-cpufreq.c @@ -131,7 +131,7 @@ static int omap_cpu_init(struct cpufreq_policy *policy) /* FIXME: what's the actual transition time? */ cpufreq_generic_init(policy, freq_table, 300 * 1000); - dev_pm_opp_of_register_em(policy->cpus); + dev_pm_opp_of_register_em(mpu_dev); return 0; } diff --git a/drivers/cpufreq/qcom-cpufreq-hw.c b/drivers/cpufreq/qcom-cpufreq-hw.c index fc92a8842e25..3810c2aed7a9 100644 --- a/drivers/cpufreq/qcom-cpufreq-hw.c +++ b/drivers/cpufreq/qcom-cpufreq-hw.c @@ -238,7 +238,7 @@ static int qcom_cpufreq_hw_cpu_init(struct cpufreq_policy *policy) goto error; } - dev_pm_opp_of_register_em(policy->cpus); + dev_pm_opp_of_register_em(cpu_dev); policy->fast_switch_possible = true; diff --git a/drivers/cpufreq/scpi-cpufreq.c b/drivers/cpufreq/scpi-cpufreq.c index 20d1f85d5f5a..8e7da2098b73 100644 --- a/drivers/cpufreq/scpi-cpufreq.c +++ b/drivers/cpufreq/scpi-cpufreq.c @@ -167,7 +167,7 @@ static int scpi_cpufreq_init(struct cpufreq_policy *policy) policy->fast_switch_possible = false; - dev_pm_opp_of_register_em(policy->cpus); + dev_pm_opp_of_register_em(cpu_dev); return 0; diff --git a/drivers/opp/of.c b/drivers/opp/of.c index eb2c599ca434..32f522028327 100644 --- a/drivers/opp/of.c +++ b/drivers/opp/of.c @@ -1031,18 +1031,18 @@ EXPORT_SYMBOL_GPL(dev_pm_opp_get_of_node); /* * Callback function provided to the Energy Model framework upon registration. - * This computes the power estimated by @CPU at @kHz if it is the frequency + * This computes the power estimated by @dev at @kHz if it is the frequency * of an existing OPP, or at the frequency of the first OPP above @kHz otherwise * (see dev_pm_opp_find_freq_ceil()). This function updates @kHz to the ceiled * frequency and @mW to the associated power. The power is estimated as - * P = C * V^2 * f with C being the CPU's capacitance and V and f respectively - * the voltage and frequency of the OPP. + * P = C * V^2 * f with C being the device's capacitance and V and f + * respectively the voltage and frequency of the OPP. * - * Returns -ENODEV if the CPU device cannot be found, -EINVAL if the power - * calculation failed because of missing parameters, 0 otherwise. + * Returns -EINVAL if the power calculation failed because of missing + * parameters, 0 otherwise. */ -static int __maybe_unused _get_cpu_power(unsigned long *mW, unsigned long *kHz, - struct device *cpu_dev) +static int __maybe_unused _get_power(unsigned long *mW, unsigned long *kHz, + struct device *dev) { struct dev_pm_opp *opp; struct device_node *np; @@ -1051,7 +1051,7 @@ static int __maybe_unused _get_cpu_power(unsigned long *mW, unsigned long *kHz, u64 tmp; int ret; - np = of_node_get(cpu_dev->of_node); + np = of_node_get(dev->of_node); if (!np) return -EINVAL; @@ -1061,7 +1061,7 @@ static int __maybe_unused _get_cpu_power(unsigned long *mW, unsigned long *kHz, return -EINVAL; Hz = *kHz * 1000; - opp = dev_pm_opp_find_freq_ceil(cpu_dev, &Hz); + opp = dev_pm_opp_find_freq_ceil(dev, &Hz); if (IS_ERR(opp)) return -EINVAL; @@ -1081,28 +1081,28 @@ static int __maybe_unused _get_cpu_power(unsigned long *mW, unsigned long *kHz, /** * dev_pm_opp_of_register_em() - Attempt to register an Energy Model - * @cpus : CPUs for which an Energy Model has to be registered + * @dev : device for which an Energy Model has to be registered * * This checks whether the "dynamic-power-coefficient" devicetree property has * been specified, and tries to register an Energy Model with it if it has. + * Having this property means the voltages are known for OPPs and the EM + * might be calculated. */ -void dev_pm_opp_of_register_em(struct cpumask *cpus) +void dev_pm_opp_of_register_em(struct device *dev) { - struct em_data_callback em_cb = EM_DATA_CB(_get_cpu_power); - int ret, nr_opp, cpu = cpumask_first(cpus); - struct device *cpu_dev; + struct em_data_callback em_cb = EM_DATA_CB(_get_power); struct device_node *np; + int ret, nr_opp; u32 cap; - cpu_dev = get_cpu_device(cpu); - if (!cpu_dev) + if (!dev) return; - nr_opp = dev_pm_opp_get_opp_count(cpu_dev); + nr_opp = dev_pm_opp_get_opp_count(dev); if (nr_opp <= 0) return; - np = of_node_get(cpu_dev->of_node); + np = of_node_get(dev->of_node); if (!np) return; @@ -1118,6 +1118,6 @@ void dev_pm_opp_of_register_em(struct cpumask *cpus) if (ret || !cap) return; - em_register_perf_domain(cpu_dev, nr_opp, &em_cb); + em_register_perf_domain(dev, nr_opp, &em_cb); } EXPORT_SYMBOL_GPL(dev_pm_opp_of_register_em); diff --git a/include/linux/pm_opp.h b/include/linux/pm_opp.h index 747861816f4f..adf93c484d7c 100644 --- a/include/linux/pm_opp.h +++ b/include/linux/pm_opp.h @@ -11,6 +11,7 @@ #ifndef __LINUX_OPP_H__ #define __LINUX_OPP_H__ +#include #include #include @@ -360,7 +361,11 @@ int dev_pm_opp_of_get_sharing_cpus(struct device *cpu_dev, struct cpumask *cpuma struct device_node *dev_pm_opp_of_get_opp_desc_node(struct device *dev); struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp); int of_get_required_opp_performance_state(struct device_node *np, int index); -void dev_pm_opp_of_register_em(struct cpumask *cpus); +void dev_pm_opp_of_register_em(struct device *dev); +static inline void dev_pm_opp_of_unregister_em(struct device *dev) +{ + em_unregister_perf_domain(dev); +} #else static inline int dev_pm_opp_of_add_table(struct device *dev) { @@ -400,7 +405,11 @@ static inline struct device_node *dev_pm_opp_get_of_node(struct dev_pm_opp *opp) return NULL; } -static inline void dev_pm_opp_of_register_em(struct cpumask *cpus) +static inline void dev_pm_opp_of_register_em(struct device *dev) +{ +} + +static inline void dev_pm_opp_of_unregister_em(struct device *dev) { }