From patchwork Tue Oct 29 16:44:25 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 178031 Delivered-To: patches@linaro.org Received: by 2002:a92:409a:0:0:0:0:0 with SMTP id d26csp51665ill; Tue, 29 Oct 2019 09:44:44 -0700 (PDT) X-Received: by 2002:ac2:4a8f:: with SMTP id l15mr3093843lfp.5.1572367484262; Tue, 29 Oct 2019 09:44:44 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1572367484; cv=none; d=google.com; s=arc-20160816; b=tja0zer/TKyzBbQtDUr5ro5u2IFx6OhOaEzQB17xg2E1MXMNeGLqyxJzU0OV7ebzVJ fWjB0AQ1jnTZ6RG6fvy52pvDJBd3cWlrnHjS/++LuWmhEBZHQ+PaLkJ1RaGXxyIidanu RTxn2ucGg4aBLZM/kmbWzLE4h+cPFCQX/rLoN9i/pGcRJnIRR6ZoB4k46MWPgH9xTmp/ rPUIORrrM8ZsR0/dt9WCNvoJ2YSbbvQFTPvZgdvt4el7t0Ulx6tsNrBQ0pQ0QVLcu1o5 ziJmPasnmjwQACT5Y7S+K+26IQ4AujXr1v6FTp1OkkAek2ARN+CC1HyBjPFDjwe7CuMJ AfBQ== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=message-id:date:subject:cc:to:from:dkim-signature; bh=Unqe7dpPmCPH71nTnrspbuD4zxyZhoMYgNbcCppl/RY=; b=TtxBJ7uIHCi7INncWzK/UUiIBxb8+yCEcZTWuqHxLw4csT7ubRDVSey+SgzJzXJVNm jdiI7pyDIwjKpYyrKVtlZv8aOfy/0uzoTers6YxCAWlIOJBB4QNZx2hmtAvjA51WCV6z bSnJujvh+Xm0v0ZoBULGEZxYPddvcBDE/cKTmc/khMgqXsP2kVeAhu04XrKjXX/Px+8q CIjMUflc+Z++/GI6WZvwWlneLfmQtrDoDw8jwd0i2oLvt9hsOtOO4UP8Y4yuv22B9d6Q w/VVsJpKiEOv2EI1GVzxLO8prFP3UWTS/EGnQhUX5/4MwG4y8W/5rtLC/HuHpo4NG+lh Durw== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Pdyqe8cp; spf=pass (google.com: domain of ulf.hansson@linaro.org designates 209.85.220.65 as permitted sender) smtp.mailfrom=ulf.hansson@linaro.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org Return-Path: Received: from mail-sor-f65.google.com (mail-sor-f65.google.com. [209.85.220.65]) by mx.google.com with SMTPS id a4sor5659600lji.16.2019.10.29.09.44.44 for (Google Transport Security); Tue, 29 Oct 2019 09:44:44 -0700 (PDT) Received-SPF: pass (google.com: domain of ulf.hansson@linaro.org designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; Authentication-Results: mx.google.com; dkim=pass header.i=@linaro.org header.s=google header.b=Pdyqe8cp; spf=pass (google.com: domain of ulf.hansson@linaro.org designates 209.85.220.65 as permitted sender) smtp.mailfrom=ulf.hansson@linaro.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=linaro.org DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=Unqe7dpPmCPH71nTnrspbuD4zxyZhoMYgNbcCppl/RY=; b=Pdyqe8cpM612bo95zzr1d4VSW7A4kUkPwaBnUwtvdWBMcue4QEMMHDDVfx3lwZRejk 0xM4R+ikkhWn2SKT/h7IblcBuBRanHw7Z2kT+tiGBS16gPpIg5R5X0u+YTfIUAamtXlV pwzGwqvSiQ6z5kOTfKI6lVoCe9YTEqfKmqsWtFFh01aIQpjSevuliSHcUimYdhIOk1vZ iFVq8cu11b8ylN/L0a39H8fTKvRonbLP9xAFJcZQin9BypNXTpXtClilLpXUhI/FirBw VVIXLPky36zIloMScavckjBEoBJ75A9+4DZTZcPE/DQKm+uNfTdHJKlCg0/9klFkkxne A87A== 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; bh=Unqe7dpPmCPH71nTnrspbuD4zxyZhoMYgNbcCppl/RY=; b=KRGwKRhjQSsMgFoFN77MbRjO231NnzUlBYrMCunedvvD7lg7WFgIRz8G64x0ubyXAs bpd0Cng7Fjsvo9LdlZijhX4NTgujlx3/NTl/2HE771Wzk19IRUWhMurInmNFz0CkpZ2e oolOFfcRQiUOTuVRKMbjjjolt6dpienkSahE8H8qnT0Yzh54B8yPgQlfYFvRTBXblfNO ksa2GA8DYD+H+Z+7EKVyUnVVhGYJD80yKrznhKpwvxGYyj271hlJqICSdPE7PMYBqbB8 NhMwZ0Aau3kDwyrtHfAvS+kTzd9iSXIZf4/yKTJC6j39aZzfm3GLyLm8V/pJ1ENyTwao IANA== X-Gm-Message-State: APjAAAWWNrdZAHj+pTCjRih3BteBeSQMhzU+35xgHnti384AW75CXgRH CCm8Oyg8A0a74dan6qNJnMeUs6gf X-Google-Smtp-Source: APXvYqwBxgSodXhX9B5DgAsU63uCOB1U9YSsUdnkSaeJF7HoObW4xTS+gVrZ4U3iqF/OOCr575N/jg== X-Received: by 2002:a2e:a0c9:: with SMTP id f9mr3427023ljm.77.1572367483719; Tue, 29 Oct 2019 09:44:43 -0700 (PDT) Return-Path: Received: from localhost.localdomain (h-158-174-22-210.NA.cust.bahnhof.se. [158.174.22.210]) by smtp.gmail.com with ESMTPSA id f28sm2048161lfh.35.2019.10.29.09.44.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 29 Oct 2019 09:44:43 -0700 (PDT) From: Ulf Hansson To: "Rafael J . Wysocki" , Daniel Lezcano , Sudeep Holla , Lorenzo Pieralisi , Mark Rutland , Lina Iyer , linux-pm@vger.kernel.org Cc: Rob Herring , Vincent Guittot , Stephen Boyd , Andy Gross , Bjorn Andersson , Kevin Hilman , Ulf Hansson , linux-arm-kernel@lists.infradead.org, linux-arm-msm@vger.kernel.org Subject: [PATCH v2 00/13] cpuidle: psci: Support hierarchical CPU arrangement Date: Tue, 29 Oct 2019 17:44:25 +0100 Message-Id: <20191029164438.17012-1-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.17.1 Changes in v2: - Avoid to affect the non-OSI path with specific changes for OSI. This forced me to re-order the series and a caused more or less minor changes to most of the patches. - Updated the DT bindings for PSCI to clarify and to include the "psci" name of the PM domain to attach to. - Replaced patch1 with another patch from Sudeep, solving the same problem, but in a different way. This is the same coverletter as in v1: This series enables initial support for hierarchical CPU arrangement, managed by PSCI and its corresponding cpuidle driver. It's based on using the generic PM domain (genpd), which nowadays also supports devices belonging to CPUs. The last DTS patch enables the hierarchical topology to be used for the Qcom 410c Dragonboard, which supports the PSCI OS-initiated mode. Do note, most of the code in this series have been posted earlier, but from the latest version being reviewed, we agreed on that it was better to re-work the PSCI backend driver as a first step, simply to get a clean interface towards the cpuidle driver. Summary of the main-changes since the last submission [1]: - Moved implementation from the psci FW dricer into cpuidle-psci. - Re-requesting review of the DT bindings, as we have moved to yaml. No changes as such, but tried to clarify a few things in the text. - Drop the patch enabling support for CPU hotplug, postponing that to the next step. - Respect the hierarchical topology in DT only when OSI mode is supported. This is to start simple and we can always extend the support on top. The series is also available at: git.linaro.org/people/ulf.hansson/linux-pm.git next Kind regards Ulf Hansson [1] https://lwn.net/Articles/788306/ Lina Iyer (1): cpuidle: dt: Support hierarchical CPU idle states Sudeep Holla (1): cpuidle: psci: Align psci_power_state count with idle state count Ulf Hansson (11): dt: psci: Update DT bindings to support hierarchical PSCI states firmware: psci: Export functions to manage the OSI mode of: base: Add of_get_cpu_state_node() to get idle states for a CPU node cpuidle: psci: Simplify OF parsing of CPU idle state nodes cpuidle: psci: Support hierarchical CPU idle states cpuidle: psci: Add a helper to attach a CPU to its PM domain cpuidle: psci: Attach CPU devices to their PM domains cpuidle: psci: Prepare to use OS initiated suspend mode via PM domains cpuidle: psci: Manage runtime PM in the idle path cpuidle: psci: Add support for PM domains by using genpd arm64: dts: Convert to the hierarchical CPU topology layout for MSM8916 .../devicetree/bindings/arm/cpus.yaml | 15 + .../devicetree/bindings/arm/psci.yaml | 102 ++++++ arch/arm64/boot/dts/qcom/msm8916.dtsi | 57 +++- drivers/cpuidle/Makefile | 4 +- drivers/cpuidle/cpuidle-psci-domain.c | 302 ++++++++++++++++++ drivers/cpuidle/cpuidle-psci.c | 123 +++++-- drivers/cpuidle/cpuidle-psci.h | 17 + drivers/cpuidle/dt_idle_states.c | 5 +- drivers/firmware/psci/psci.c | 18 +- drivers/of/base.c | 36 +++ include/linux/of.h | 8 + include/linux/psci.h | 2 + 12 files changed, 654 insertions(+), 35 deletions(-) create mode 100644 drivers/cpuidle/cpuidle-psci-domain.c create mode 100644 drivers/cpuidle/cpuidle-psci.h -- 2.17.1