From patchwork Wed Nov 27 10:29:01 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ulf Hansson X-Patchwork-Id: 11263735 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 860F115AB for ; Wed, 27 Nov 2019 10:29:22 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6589D208A1 for ; Wed, 27 Nov 2019 10:29:22 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linaro.org header.i=@linaro.org header.b="WjmA9qLe" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727111AbfK0K3V (ORCPT ); Wed, 27 Nov 2019 05:29:21 -0500 Received: from mail-lf1-f65.google.com ([209.85.167.65]:46842 "EHLO mail-lf1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726149AbfK0K3U (ORCPT ); Wed, 27 Nov 2019 05:29:20 -0500 Received: by mail-lf1-f65.google.com with SMTP id a17so16681408lfi.13 for ; Wed, 27 Nov 2019 02:29:18 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id; bh=ix8gklYmB6UDNV/QC3c+tosxDnV18E4E+uiNnO6VScw=; b=WjmA9qLe/NecRbZ3fzetc0/1Nm2xYFXmf6V+NnuxS9t/I35sAGxJE5N2A/3ajU1how 1tmTUhAQ8BZ2SL12A5B+pD1I7QQAgUKS/3lecivVvUrmS42uKZQOvokBmcaKA6fXiyhz 71cGRHIkFcMNWPhnwTGyeJYz4qUUjDM9W9cgT8Gg6qRWI55mgOTpkJnwhsNeutE+NNbB Chcr7Pe9cW7ZF1uEAQMpz7qMtS/jK0OTWPq+BR3+MPTnPSq6HQyxyAAGny6hl2799QzJ /ipHdBqyNwQcDJ7CHr5feCfwYuQqGZkZS05veAwKx65zFqrQVAW1uiXiV8e2CU11dm2s wiSA== 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=ix8gklYmB6UDNV/QC3c+tosxDnV18E4E+uiNnO6VScw=; b=hjbt0IvYhIX4WHdbDCOTyNlEipBKOJYGFaQM7z1DLbI1MXp/dRiaEBzGeGLpZOI+r3 2oLsKfQFu3AOuGzoNNNCVDyGjAmCyYnFNzSzwYGnPMo/OIT4RO8cQPR+RYhgkP+TI0kL bK6UofkWdbpG7ucZ+F5SWG494Z5A9tqz3sEqTMBBc7rFlUFdSd5RYVM9e/sixaM2IDJ4 Q16RnH6OjbHJywVkZNp8dUEHfZOMmA5fs1ADMQyQne2t7O5lbTqWKmwPx4uacQwcydux IYMjFGsNKM/XdSayEMuMmVG7QHAtRn0ycmgF2JUs/MSASV2dgt4N1TckKQBoLC25ZsRg 3/qw== X-Gm-Message-State: APjAAAU3GJ9UOF/U800wDuaMgtMFaOWYOVaJN2BzcbGevrGs2mbosm86 8Y/Tdy6Nl2WXqEni4sXDbPblUg== X-Google-Smtp-Source: APXvYqzwxSjoX0WePnCcqKWVwhIrIupw9nuRgrbFXnTzGgsvQBmMgqmcnl+RS0sDa/QqD5iVi1qHMA== X-Received: by 2002:ac2:4312:: with SMTP id l18mr28284015lfh.38.1574850557532; Wed, 27 Nov 2019 02:29:17 -0800 (PST) Received: from uffe-XPS-13-9360.ideon.se ([85.235.10.227]) by smtp.gmail.com with ESMTPSA id t9sm6868260ljj.19.2019.11.27.02.29.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 27 Nov 2019 02:29:16 -0800 (PST) From: Ulf Hansson To: Sudeep Holla , Lorenzo Pieralisi , Rob Herring , linux-pm@vger.kernel.org Cc: "Rafael J . Wysocki" , Daniel Lezcano , Mark Rutland , Lina Iyer , 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 v3 00/13] cpuidle: psci: Support hierarchical CPU arrangement Date: Wed, 27 Nov 2019 11:29:01 +0100 Message-Id: <20191127102914.18729-1-ulf.hansson@linaro.org> X-Mailer: git-send-email 2.17.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org Rob, Lorenzo, Sudeep - apologize for sending a new version in the middle of the merge window, but I thought I might as well get this out, especially since there are only a very small amount of updates. Please review, whenever you find some time for it. Kind regards Ulf Hansson Changes in v3: - Take one step further to completely avoid executing any OSI specific code from the ->enter() callback, while operating in the default PSCI Platform Coordinated mode. - Update example for the PSCI DT bindings to make it compile with "make dt_binding_check" 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 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. More detailed background can be found from previous submissions [1]. 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 | 104 ++++++ arch/arm64/boot/dts/qcom/msm8916.dtsi | 57 +++- drivers/cpuidle/Makefile | 4 +- drivers/cpuidle/cpuidle-psci-domain.c | 302 ++++++++++++++++++ drivers/cpuidle/cpuidle-psci.c | 114 +++++-- 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, 647 insertions(+), 35 deletions(-) create mode 100644 drivers/cpuidle/cpuidle-psci-domain.c create mode 100644 drivers/cpuidle/cpuidle-psci.h