From patchwork Tue Jan 2 14:42:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sudeep Holla X-Patchwork-Id: 123129 Delivered-To: patch@linaro.org Received: by 10.140.22.227 with SMTP id 90csp9041482qgn; Tue, 2 Jan 2018 06:42:59 -0800 (PST) X-Google-Smtp-Source: ACJfBotT36no6Td1NpaWabfDcUpQ/atswtItpu++gn91DLoNmIQADjweknBHIKdgzc2rZXmpI6IL X-Received: by 10.84.252.140 with SMTP id y12mr35168397pll.13.1514904179406; Tue, 02 Jan 2018 06:42:59 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1514904179; cv=none; d=google.com; s=arc-20160816; b=bR4zOiCIZZDtSOMlGJOXbYDzENkQErFPpikj5nkKvaMLjDb3wupwOletIwdSTi3ON0 hEn1WuAlIAvZY9zS/U7CWG/n5WA7SoUTb+qs2KHC0KS7fvvYfDPVBpzlukhOScoEztD0 BJc3d4czmqGyVMO9Cz7vWh7nFLRjdeAprHfoIKpcnX6U33JMni7ewvW4au6QFVyk6SEi i3Mty3wPZoh81r6DA3qW7XDpjf+baIG803UK8IqH8O34+2ndOoJdO/vND2pG0E1gUKyb MNVt0Zf4OOMA/wrPBaKqnHyN3+6lD8qUXzluBisMR+3Zj5Sshm/aykiWcrm8879eP6of N/Og== 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=tdjU1YB8YYrtElvGbXyajCHD5k6OY/m0jGjrAe8D/XQ=; b=fbmQaALNHSc3q9n1OycpWKIq7xIAxlnTiJACGy4z2DhGA3mErodt8V4BIfDFJFPNil EEVuY8QUWIe8hzxDVglnmpHsoou2DH0Fux3oCkWJ8Vk3n2MkMLz7JU4tODfjtuwZMswa uSGQjsLVrJnV4k7UO8uZw0WweU+os6cf8HD9OqPiPi/n/a7c77mNNjdc46LeXAUHCea0 FRK9d0gm36WAxtQOGsjOFnlmyPLszQrinn7P+EhARpeyOJn5DLpgXBC2Gw9R9szR78Se SgeWBum6sbFDp/ZYBKk35wTsq9iUhgOfZxu8iE2IVwuhXrySnLpV7dFOJfdjZPAkzrMO 5TPg== 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 m23si22782212pgn.776.2018.01.02.06.42.59; Tue, 02 Jan 2018 06:42:59 -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 S1753019AbeABOm6 (ORCPT + 6 others); Tue, 2 Jan 2018 09:42:58 -0500 Received: from foss.arm.com ([217.140.101.70]:39564 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752316AbeABOm5 (ORCPT ); Tue, 2 Jan 2018 09:42:57 -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 47C771529; Tue, 2 Jan 2018 06:42:57 -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 33D723F25C; Tue, 2 Jan 2018 06:42:55 -0800 (PST) From: Sudeep Holla To: ALKML , LKML , DTML Cc: Sudeep Holla , Roy Franz , Harb Abdulhamid , Nishanth Menon , Arnd Bergmann , Loc Ho , Alexey Klimov , Ryan Harkin , Jassi Brar Subject: [PATCH v5 00/20] firmware: ARM System Control and Management Interface(SCMI) support Date: Tue, 2 Jan 2018 14:42:22 +0000 Message-Id: <1514904162-11201-1-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 v4.15-rc6 - 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 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 [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 | 11 + drivers/cpufreq/Makefile | 1 + drivers/cpufreq/scmi-cpufreq.c | 285 +++++++ 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, 4409 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