From patchwork Mon Feb 12 18:45:04 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 128146 Delivered-To: patch@linaro.org Received: by 10.46.124.24 with SMTP id x24csp3485062ljc; Mon, 12 Feb 2018 10:45:44 -0800 (PST) X-Google-Smtp-Source: AH8x227xMz1rFX5xClDUTv94b0UxPfzO4XcQmapK/Fq8OdyUUK+FEuZP5GkQK8CLJh0Fcb2dtvL6 X-Received: by 2002:a17:902:ab8f:: with SMTP id f15-v6mr11507196plr.214.1518461144688; Mon, 12 Feb 2018 10:45:44 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1518461144; cv=none; d=google.com; s=arc-20160816; b=DIFo+GoS5w/GMtB4hzfLMHyI2z16mOJYU+f27UdoVF6fXuBs/6RKk4KXmiu8TFntZR e6m7GQTMjMnanRm5F+hCVWMaJbHzsOJF+j3so8mI4a9BS02RoRaKK8OTgrvZJiKXBgYC CNj3YAnWCYxnGkR67bLFuZk152D6C7a7YnzbNlpHifJ9swmIWggHOiIqYMLrapHU8KmJ h1d8xssq6WPyprDcxbTvfE3pJvNMXWj9e1vgPpv8cDH57jnRKiDon0LDX5evofXRCL6U czMnj8ik+Cd/diISQkh9G6a1p2RYeJy01MHvH8KxUNdiwLocSs03OZPLKnrIbFIaww29 vijQ== 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=QQ/kr/67QbC1066hummj1PPrKm+4+ZaCDGCG/bNkgEc=; b=GCkZJ42TEwItrXd4YYaaiE5Q9ElkhCmk7emKWGrozjCNMnNxTAX333a59mfKfHc3VP Bw/GsA4AUnQ2NDJN55Yi/BPmEJIXBtsJ1XObsfInjwakGZ/UVFIfWJV0SCglyGQtZ1vp POzhfDQDELAzvi4Ok2bBDsepS/V3Z77QK4ZzCXZr+QLYU0Y/2p00DWFm1x9wyqdhzJeD VteqI1X+qr1a2jA+DbUx0BDYfNlmUjPDbJIJPh6iglOEergl/O/OZjiPzoYtBVTWo2Nq CoW3tiY4iJjmRuPRNYRCJ5T92w7qV7u0vAbXj5Ebc5uI4fcAiXzGihrZy5YNwUDE1VRP KbIw== 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 v1si6742012pfa.223.2018.02.12.10.45.44; Mon, 12 Feb 2018 10:45:44 -0800 (PST) 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 S1753828AbeBLSpn (ORCPT + 6 others); Mon, 12 Feb 2018 13:45:43 -0500 Received: from foss.arm.com ([217.140.101.70]:47084 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753588AbeBLSpm (ORCPT ); Mon, 12 Feb 2018 13:45:42 -0500 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 006761435; Mon, 12 Feb 2018 10:45:42 -0800 (PST) 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 9E74B3F24D; Mon, 12 Feb 2018 10:45:40 -0800 (PST) From: Sudeep Holla To: ALKML , LKML , DTML Cc: Sudeep Holla , Greg Kroah-Hartman , Arnd Bergmann , Alexey Klimov Subject: [PATCH v5 00/20][RESEND] firmware: ARM System Control and Management Interface(SCMI) support Date: Mon, 12 Feb 2018 18:45:04 +0000 Message-Id: <1518461124-17371-1-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: v4[6]->v5: - Rebased to v4.16-rc1 - Updated all the gathered Ack/Reviewed-by tags(which includes all the drivers using SCMI protocol) v3[5]->v4[6]: - 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 received 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 [6] https://marc.info/?l=devicetree&m=150972061408961&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 | 21 + drivers/cpufreq/Makefile | 1 + drivers/cpufreq/scmi-cpufreq.c | 264 +++++++ drivers/firmware/Kconfig | 34 + drivers/firmware/Makefile | 1 + drivers/firmware/arm_scmi/Makefile | 5 + drivers/firmware/arm_scmi/base.c | 264 +++++++ 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 | 876 +++++++++++++++++++++ drivers/firmware/arm_scmi/perf.c | 492 ++++++++++++ drivers/firmware/arm_scmi/power.c | 232 ++++++ 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 | 270 +++++++ 26 files changed, 4287 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