From patchwork Wed Mar 2 11:29:12 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Lukasz Luba X-Patchwork-Id: 547730 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 3F959C433EF for ; Wed, 2 Mar 2022 11:29:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S238366AbiCBLaN (ORCPT ); Wed, 2 Mar 2022 06:30:13 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36442 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234695AbiCBLaK (ORCPT ); Wed, 2 Mar 2022 06:30:10 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id D2F9831214; Wed, 2 Mar 2022 03:29:27 -0800 (PST) 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 9C43C13D5; Wed, 2 Mar 2022 03:29:27 -0800 (PST) Received: from e123648.arm.com (unknown [10.57.21.27]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 62C4C3F70D; Wed, 2 Mar 2022 03:29:25 -0800 (PST) From: Lukasz Luba To: linux-kernel@vger.kernel.org Cc: lukasz.luba@arm.com, dietmar.eggemann@arm.com, viresh.kumar@linaro.org, rafael@kernel.org, daniel.lezcano@linaro.org, nm@ti.com, sboyd@kernel.org, mka@chromium.org, dianders@chromium.org, robh+dt@kernel.org, devicetree@vger.kernel.org, linux-pm@vger.kernel.org Subject: [PATCH v5 0/5] Introduce "opp-microwatt" and Energy Model from DT Date: Wed, 2 Mar 2022 11:29:12 +0000 Message-Id: <20220302112917.27270-1-lukasz.luba@arm.com> X-Mailer: git-send-email 2.17.1 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org Hi all, This patch set solves a few issues: 1. It allows to register EM from DT, when the voltage information is not available. (Some background of the issues present on Chromebook devices can be checked at [1].) 2. It allows to register 'advanced' EM from the DT, which is more accurate and reflects total power (dynamic + static). Implementation details: Existing machinery in the OPP framework now handles "opp-microwatt", similarly to "opp-microamp". It also has helper exported function to get power from OPP. For the EM, it adds a new callback in OPP framework to use this new API and read power while having an opp pointer. It's agreed to work with OPP-v2. Comments, suggestions are very welcome. changelog: v5: - added dual-macro to conditionally setup needed callback and compile on !EM kernel gently - removed 'advanced' word from OPP patch header description v4 [2] Regards, Lukasz Luba [1] https://lore.kernel.org/linux-pm/20220207073036.14901-2-lukasz.luba@arm.com/ [2] https://lore.kernel.org/linux-pm/20220301093524.8870-1-lukasz.luba@arm.com/ Lukasz Luba (5): dt-bindings: opp: Add "opp-microwatt" entry in the OPP OPP: Add "opp-microwatt" supporting code PM: EM: add macro to set .active_power() callback conditionally OPP: Add support of "opp-microwatt" for EM registration Documentation: EM: Describe new registration method using DT .../devicetree/bindings/opp/opp-v2-base.yaml | 23 ++++ Documentation/power/energy-model.rst | 10 ++ drivers/opp/core.c | 25 ++++ drivers/opp/debugfs.c | 3 + drivers/opp/of.c | 108 +++++++++++++++++- include/linux/energy_model.h | 2 + include/linux/pm_opp.h | 12 +- 7 files changed, 179 insertions(+), 4 deletions(-)