From patchwork Fri Nov 3 14:47:37 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 117913 Delivered-To: patch@linaro.org Received: by 10.80.245.45 with SMTP id t42csp3401350edm; Fri, 3 Nov 2017 07:48:53 -0700 (PDT) X-Google-Smtp-Source: ABhQp+THn9XLKKLpdxnVVdz4/tlnvOUOpz9q21U0RDI1klpg106w5Vr6GhOTlsnq2UJiy94bFUVq X-Received: by 10.101.80.3 with SMTP id f3mr7493154pgo.109.1509720532974; Fri, 03 Nov 2017 07:48:52 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1509720532; cv=none; d=google.com; s=arc-20160816; b=pjrTvmboiB2asxECKfB+6BQ1f7Q3/mSzZfLOkChb3THD5ivY8eLZ0OxO4K/8LoQ2x+ QAIGKMWRaDI9Vnwv6cdRHyEE8iDhesyC4UgF68dTgexRXsOSzrTUu2qVqNC4DA18Ldmb 1zDsloI2ZM18BxpPJryEJ/lJG6FNzU6r14IcNJLIrvFbgr1GN9/+0GYaLHWhCWvbJCUQ 3Pze1D/jwSVHPb/WIAL6eT6YAFUpJq26YvdPmH8gBoi+LOMQVLxzro/hOOJjTzbfAPEA bNsaI4rSTSO73n1d04G7K0Fut/uyUTUXLqHyQdI0RkGrRTo7zv/7lLL416u/oyPeyE8R 3bNg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:message-id:date:subject:cc:to:from :arc-authentication-results; bh=BooWszUNF9TZgJmpCn0SgvVMS8Jj7Bad8fdfV9mq82A=; b=XttACJ3poJY6CVsk24XguXgvLvDtuT2YQe4jGVMASFJBcQlzrcmah8KoEDowFISwNo dz3ZKCRSSRnVH3g1IBTD9BKQ5TXEWMCeR7Mzjawq1S3MfAZbBfry4vIZ/TlYrtQeSgRe EHEIBSaOuZ0yghl/Xpgo0HGTXL43aHJskNDnHKgyyRP7wmF1mrVVpGh+Dp3WSazGT95W 8pqcN6f+S7OiXWXrFcwjGnej/jlIZU+N2gMboPVUjm/YFti/LJQvVZ2jY9IWUghQ4ISu n19TWt/0bplINMMvnpH21uL908k4G0LfA6DgNnVFov/OL5uyPaab2JoHlRzwLB48ZCMm 9AMw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id q18si6356771pge.257.2017.11.03.07.48.52; Fri, 03 Nov 2017 07:48:52 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=devicetree-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751415AbdKCOsv (ORCPT + 6 others); Fri, 3 Nov 2017 10:48:51 -0400 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:44178 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750707AbdKCOsu (ORCPT ); Fri, 3 Nov 2017 10:48:50 -0400 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 D07CE1529; Fri, 3 Nov 2017 07:48:49 -0700 (PDT) Received: from e107155-lin.cambridge.arm.com (e107155-lin.cambridge.arm.com [10.1.210.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id E0DAE3F3DF; Fri, 3 Nov 2017 07:48:47 -0700 (PDT) From: Sudeep Holla To: ALKML , LKML , DTML Cc: Sudeep Holla , Roy Franz , Harb Abdulhamid , Nishanth Menon , Arnd Bergmann , Loc Ho , Ryan Harkin , Jassi Brar Subject: [PATCH v4 00/20] firmware: ARM System Control and Management Interface(SCMI) support Date: Fri, 3 Nov 2017 14:47:37 +0000 Message-Id: <1509720477-18936-1-git-send-email-sudeep.holla@arm.com> X-Mailer: git-send-email 2.7.4 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org Hi all, ARM System Control and Management Interface(SCMI) is more flexible and easily extensible than any of the existing interfaces. Many vendors were involved in the making of this formal specification and is now published[1]. There is a strong trend in the industry to provide micro-controllers in systems to abstract various power, or other system management tasks. These controllers usually have similar interfaces, both in terms of the functions that are provided by them, and in terms of how requests are communicated to them. This specification is to standardise and avoid (any further) fragmentation in the design of such interface by various vendors. This patch set is intended to get feedback on the design and structure of the code. This is not complete and not fully tested due to non-availability of firmware with full feature set at this time. It currently doesn't support notification, asynchronous/delayed response, perf/power statistics region and sensor register region to name a few. I have borrowed some of the ideas of message allocation/management from TI SCI. Changes: v3[5]->v4: - Added SCMI protocol bus to enumerate supported protocols as suggested by Arnd - Dropped the abstraction to mailbox as it may be optional v2[4]->v3: - Addressed various comments recieved so far(clock, hwmon and cpufreq drivers along with scmi drivers) - Hwmon driver now uses core layer to create and manage sysfs attributes - Added a shim layer to abstract the mailbox interface to support any custom adaptation required by the controller driver - Simple ARM MHU shim layer using newly added abstraction v1[3]->v2[4]: - Additional support for polling based DVFS and per protocol channels - Dependent drivers(clock, hwmon, cpufreq and power domains) - Various other review comments and issued found during testing addressed - Explicit binding for method dropped as even SMC based method are adviertised as mailbox RFC[2]->v1[3]: - Add generic mailbox binding for shared memory(Rob H) - Dropped compatibles per protocol(Suggested by Matt S) - Dropped lot of unnecessary pointer casting(Arnd B) - Dropped packing of structures(Arnd B) - Few other changes/additions based initial testing with firmware providing SCMI interface to OSPM -- Regards, Sudeep [1] http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/index.html [2] https://marc.info/?l=linux-kernel&m=149685193627620&w=2 [3] https://marc.info/?l=linux-arm-kernel&m=149849482623492&w=2 [4] https://marc.info/?l=devicetree&m=150185763105926&w=2 [5] https://marc.info/?l=devicetree&m=150660452015351&w=2 Sudeep Holla (20): dt-bindings: mailbox: add support for mailbox client shared memory dt-bindings: arm: add support for ARM System Control and Management Interface(SCMI) protocol firmware: arm_scmi: add basic driver infrastructure for SCMI firmware: arm_scmi: add common infrastructure and support for base protocol firmware: arm_scmi: add scmi protocol bus to enumerate protocol devices firmware: arm_scmi: add initial support for performance protocol firmware: arm_scmi: add initial support for clock protocol firmware: arm_scmi: add initial support for power protocol firmware: arm_scmi: add initial support for sensor protocol firmware: arm_scmi: probe and initialise all the supported protocols firmware: arm_scmi: add support for polling based SCMI transfers firmware: arm_scmi: add option for polling based performance domain operations firmware: arm_scmi: refactor in preparation to support per-protocol channels firmware: arm_scmi: add per-protocol channels support using idr objects firmware: arm_scmi: add device power domain support using genpd clk: add support for clocks provided by SCMI hwmon: (core) Add hwmon_max to hwmon_sensor_types enumeration hwmon: add support for sensors exported via ARM SCMI cpufreq: add support for CPU DVFS based on SCMI message protocol cpufreq: scmi: add support for fast frequency switching Documentation/devicetree/bindings/arm/arm,scmi.txt | 179 +++++ .../devicetree/bindings/mailbox/mailbox.txt | 28 + MAINTAINERS | 11 +- drivers/clk/Kconfig | 10 + drivers/clk/Makefile | 1 + drivers/clk/clk-scmi.c | 213 +++++ drivers/cpufreq/Kconfig.arm | 11 + drivers/cpufreq/Makefile | 1 + drivers/cpufreq/scmi-cpufreq.c | 290 +++++++ drivers/firmware/Kconfig | 34 + drivers/firmware/Makefile | 1 + drivers/firmware/arm_scmi/Makefile | 5 + drivers/firmware/arm_scmi/base.c | 293 +++++++ drivers/firmware/arm_scmi/bus.c | 232 ++++++ drivers/firmware/arm_scmi/clock.c | 353 ++++++++ drivers/firmware/arm_scmi/common.h | 116 +++ drivers/firmware/arm_scmi/driver.c | 895 +++++++++++++++++++++ drivers/firmware/arm_scmi/perf.c | 530 ++++++++++++ drivers/firmware/arm_scmi/power.c | 255 ++++++ drivers/firmware/arm_scmi/scmi_pm_domain.c | 140 ++++ drivers/firmware/arm_scmi/sensors.c | 302 +++++++ drivers/hwmon/Kconfig | 12 + drivers/hwmon/Makefile | 1 + drivers/hwmon/scmi-hwmon.c | 233 ++++++ include/linux/hwmon.h | 1 + include/linux/scmi_protocol.h | 272 +++++++ 26 files changed, 4414 insertions(+), 5 deletions(-) create mode 100644 Documentation/devicetree/bindings/arm/arm,scmi.txt create mode 100644 drivers/clk/clk-scmi.c create mode 100644 drivers/cpufreq/scmi-cpufreq.c create mode 100644 drivers/firmware/arm_scmi/Makefile create mode 100644 drivers/firmware/arm_scmi/base.c create mode 100644 drivers/firmware/arm_scmi/bus.c create mode 100644 drivers/firmware/arm_scmi/clock.c create mode 100644 drivers/firmware/arm_scmi/common.h create mode 100644 drivers/firmware/arm_scmi/driver.c create mode 100644 drivers/firmware/arm_scmi/perf.c create mode 100644 drivers/firmware/arm_scmi/power.c create mode 100644 drivers/firmware/arm_scmi/scmi_pm_domain.c create mode 100644 drivers/firmware/arm_scmi/sensors.c create mode 100644 drivers/hwmon/scmi-hwmon.c create mode 100644 include/linux/scmi_protocol.h -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Acked-by: Viresh Kumar Acked-by: Rafael J. Wysocki