From patchwork Mon Feb 4 11:09:47 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Quentin Perret X-Patchwork-Id: 10795413 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 612D16C2 for ; Mon, 4 Feb 2019 11:10:12 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4F2132AB42 for ; Mon, 4 Feb 2019 11:10:12 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 40D252AB5A; Mon, 4 Feb 2019 11:10:12 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 3E8D52AB42 for ; Mon, 4 Feb 2019 11:10:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=5dQrjUt9qDg3K3Aa4WD+Oqn7uxBBYxpSOJz1OrnsjOU=; b=tt+ME/YAOpPE5T uSnYKUtBVrrFrU69e4Y1Pn61P7kU9nppLJuhgThbpPIZaB+diQSeejPT6eGGjMApx1fpAe0YxyfM8 WrMgcaD6/bPnV1r+oAlISAeupb/oGoKrTEbn+vCPGgeOkjSCeITHOzkgblk8S5fGstk2Zuk6QERZe kYZPQaa5GEACOC3y9pO3n72irJdO4kpFtrP/E0cK4xmcmdxk+pLIERl6MmBzXmanlW3/+Nwm6QAXD HKw6DX415Lg7TUsihVnx1R5Ol8pXcpW1qD7+yNR2vY4C1J1eo5RXUGFqn8R2Q1NBG5ZjfJ4mkoon3 6lJnUnzbot0iDXmTINvA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gqc8a-0008Uh-Tn; Mon, 04 Feb 2019 11:10:04 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1gqc8X-0008Ip-Cu for linux-arm-kernel@lists.infradead.org; Mon, 04 Feb 2019 11:10:02 +0000 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 1B71FA78; Mon, 4 Feb 2019 03:09:59 -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 29B223F675; Mon, 4 Feb 2019 03:09:57 -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 Subject: [PATCH v4 0/5] Register an Energy Model for Arm reference platforms Date: Mon, 4 Feb 2019 11:09:47 +0000 Message-Id: <20190204110952.16025-1-quentin.perret@arm.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190204_031001_441675_7FB1C884 X-CRM114-Status: GOOD ( 12.40 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: quentin.perret@arm.com, dietmar.eggemann@arm.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-pm@vger.kernel.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The Energy Model (EM) framework feeds interested subsystems (the scheduler/EAS as of now) with power costs provided by drivers. Yet, no driver is actually doing that upstream yet. This series updates a set of CPUFreq drivers in order to register power costs in the EM framework for some of the Arm reference platforms for EAS: Hikey960, Juno and TC2. The series is split as follows: - Patch 01 introduces in PM_OPP a helper function which estimates the CPU power using the P=CV²f equation also used by IPA. It should be noted that this introduces duplicate code with IPA, which will eventually be fixed by migrating IPA to using PM_EM. The ideal plan would be to do so later, in a separate patch series. I would indeed prefer to keep the thermal and CPUFreq discussion separate at this stage, if deemed acceptable. - Patches 02-04 make use of that PM_OPP helper function from the following CPUFreq drivers: cpufreq-dt, scpi-cpufreq and arm_big_little. - Patch 05 modifies the SCMI cpufreq driver to pass the power costs obtained from firmware to PM_EM. This patch is independent from the rest of the series. Changes since v3 (20190201093101.31869-1-quentin.perret@arm.com) - Moved the OPP count inside dev_pm_opp_of_register_em() (Matthias, Sudeep) Changes since v2 (20190130170506.20450-1-quentin.perret@arm.com) - Added comment to explain why we check only the dynamic-power-coeff property and not voltages in dev_pm_opp_of_register_em() (Viresh) - Fixed comments/docstrings of new functions in opp/of.c (Matthias) - Added Matthias' Tested-by to patch 01 Changes since v1 (20190128165522.31749-1-quentin.perret@arm.com): - Dropped the DT patches that have been queued by Sudeep - Introduced dev_pm_opp_of_register_em() helper to check the presence of the DT coeff before calling PM_EM (Viresh, Matthias) - Coding-style improvements (Viresh, Matthias) Thanks, Quentin Dietmar Eggemann (1): cpufreq: arm_big_little: Register an Energy Model Quentin Perret (4): PM / OPP: Introduce a power estimation helper cpufreq: dt: Register an Energy Model cpufreq: scpi: Register an Energy Model cpufreq: scmi: Register an Energy Model drivers/cpufreq/arm_big_little.c | 2 + drivers/cpufreq/cpufreq-dt.c | 2 + drivers/cpufreq/scmi-cpufreq.c | 39 ++++++++++++- drivers/cpufreq/scpi-cpufreq.c | 3 + drivers/opp/of.c | 99 ++++++++++++++++++++++++++++++++ include/linux/pm_opp.h | 6 ++ 6 files changed, 148 insertions(+), 3 deletions(-)