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=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 43A90C282DC for ; Wed, 30 Jan 2019 17:05:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1BE3921473 for ; Wed, 30 Jan 2019 17:05:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1732389AbfA3RF3 (ORCPT ); Wed, 30 Jan 2019 12:05:29 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:58096 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1732372AbfA3RF1 (ORCPT ); Wed, 30 Jan 2019 12:05:27 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id DF51F15BE; Wed, 30 Jan 2019 09:05:26 -0800 (PST) Received: from queper01-lin.cambridge.arm.com (queper01-lin.cambridge.arm.com [10.1.195.48]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id EEF383F589; Wed, 30 Jan 2019 09:05:24 -0800 (PST) From: Quentin Perret To: viresh.kumar@linaro.org, sudeep.holla@arm.com, rjw@rjwysocki.net, nm@ti.com, sboyd@kernel.org, mka@chromium.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dietmar.eggemann@arm.com, quentin.perret@arm.com Subject: [PATCH v2 2/5] cpufreq: dt: Register an Energy Model Date: Wed, 30 Jan 2019 17:05:03 +0000 Message-Id: <20190130170506.20450-3-quentin.perret@arm.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190130170506.20450-1-quentin.perret@arm.com> References: <20190130170506.20450-1-quentin.perret@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Now that PM_OPP provides a helper function to estimate the power consumed by CPUs, make sure to try and register an Energy Model (EM) from cpufreq-dt, hence ensuring interested subsystems (the task scheduler, for example) can make use of that information when available. Signed-off-by: Quentin Perret --- drivers/cpufreq/cpufreq-dt.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/cpufreq/cpufreq-dt.c b/drivers/cpufreq/cpufreq-dt.c index e58bfcb1169e..1d4ad6f67408 100644 --- a/drivers/cpufreq/cpufreq-dt.c +++ b/drivers/cpufreq/cpufreq-dt.c @@ -160,7 +160,7 @@ static int cpufreq_init(struct cpufreq_policy *policy) unsigned int transition_latency; bool fallback = false; const char *name; - int ret; + int ret, nr_opp; cpu_dev = get_cpu_device(policy->cpu); if (!cpu_dev) { @@ -231,8 +231,8 @@ static int cpufreq_init(struct cpufreq_policy *policy) * But we need OPP table to function so if it is not there let's * give platform code chance to provide it for us. */ - ret = dev_pm_opp_get_opp_count(cpu_dev); - if (ret <= 0) { + nr_opp = dev_pm_opp_get_opp_count(cpu_dev); + if (nr_opp <= 0) { dev_dbg(cpu_dev, "OPP table is not ready, deferring probe\n"); ret = -EPROBE_DEFER; goto out_free_opp; @@ -280,6 +280,8 @@ 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, nr_opp); + return 0; out_free_cpufreq_table: -- 2.20.1