From patchwork Thu Feb 11 20:17:03 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Maximilian Luz X-Patchwork-Id: 12084105 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,FREEMAIL_FORGED_FROMDOMAIN,FREEMAIL_FROM, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 478C3C433E0 for ; Thu, 11 Feb 2021 20:19:19 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 0150364E57 for ; Thu, 11 Feb 2021 20:19:18 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231395AbhBKUTF (ORCPT ); Thu, 11 Feb 2021 15:19:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58544 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231728AbhBKUS2 (ORCPT ); Thu, 11 Feb 2021 15:18:28 -0500 Received: from mail-ej1-x631.google.com (mail-ej1-x631.google.com [IPv6:2a00:1450:4864:20::631]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D8F5CC06178A; Thu, 11 Feb 2021 12:17:21 -0800 (PST) Received: by mail-ej1-x631.google.com with SMTP id hs11so12043562ejc.1; Thu, 11 Feb 2021 12:17:21 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=ChSb7jAu63yN2PTu1qjhx29H+AwyGHK2chc2roix8M4=; b=Mn897Wfe4E/hMRE8oORZfFesshNO63+9mpn8tf4vKQC0vIcIlH9jL6qKZjICNuL18O 3wBXtTosTblidxjSQ0OG7Ev1q4zEThZUMOx12bQfb7UIv5YW9H2s/jeqnU4DASO++5lc mkpGz60UM+v5bJVD7oG5JikfwH/TuD5twOST1+ig1ZEq/kob+Tqtu1EH+aw3qBd38cnx HUxAOGeqQoTFxCHzIicY81uMcCCJqDfoImbXobGLabXaIliIoX9mPvxpD/XEcwLiNxHq Us9uDPQ8JnUH3Noc4oTJkQpIMNCsOiWO+D+pM0BSCFTnwf4dFxcC5CwE+gvwGM9NSXze /Zbg== 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:in-reply-to :references:mime-version:content-transfer-encoding; bh=ChSb7jAu63yN2PTu1qjhx29H+AwyGHK2chc2roix8M4=; b=CXmiRU4H1B2Ty7emKm4TEYT12dcbCHJc7jSIfNnlmA5rgnBVKOj0AQkPvHRaeB/4R2 +C0LFPYyegjbs1baGIzSRHD+pL42VmR/olLRsv5ZweGl223VQi71OY6Q8Fup2VL2ehZI Xw5Zxti1Z61FL5Jq5NchtGq2Evn2TLVbDhMVQUqjKtrxamtCLgXZERn/sYkMAVjcD5B2 n1M/W0cLEKbsxFzA/lPmYrIMdsN9jlUJtT5wwqj8Udvrty1ajJhfQM6KPhBo/DhG5OuM WvWFbpT2alT4YiRkj37qCOqsWfDPoWzNrwTVV6Y7TvzqXwrYYezhkT2vqOYKsfM45+Jh RQXA== X-Gm-Message-State: AOAM5316Vda16i31zDplcwLcGP8hqwkHbnkA+6rCU0zpddEUjA06WwD3 lfx24BiSEV3Tw8Xjyl3YakI= X-Google-Smtp-Source: ABdhPJwnjOw40nzNXFmuMaZv3zAs5SlEJtgIwmwLXT6pYbMygZ3WNxchPPmAs/omonfnrdAgMpRH2Q== X-Received: by 2002:a17:906:24ca:: with SMTP id f10mr9883900ejb.96.1613074640648; Thu, 11 Feb 2021 12:17:20 -0800 (PST) Received: from xws.localdomain ([37.58.58.229]) by smtp.gmail.com with ESMTPSA id a1sm4938177edj.6.2021.02.11.12.17.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 11 Feb 2021 12:17:20 -0800 (PST) From: Maximilian Luz To: Hans de Goede , "Rafael J. Wysocki" Cc: Maximilian Luz , Mark Gross , Len Brown , Mark Pearson , Jiaxun Yang , platform-driver-x86@vger.kernel.org, linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 4/4] platform/surface: Add platform profile driver Date: Thu, 11 Feb 2021 21:17:03 +0100 Message-Id: <20210211201703.658240-5-luzmaximilian@gmail.com> X-Mailer: git-send-email 2.30.0 In-Reply-To: <20210211201703.658240-1-luzmaximilian@gmail.com> References: <20210211201703.658240-1-luzmaximilian@gmail.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-acpi@vger.kernel.org Add a driver to provide platform profile support on 5th- and later generation Microsoft Surface devices with a Surface System Aggregator Module. On those devices, the platform profile can be used to influence cooling behavior and power consumption. For example, the default 'quiet' profile limits fan noise and in turn sacrifices performance of the discrete GPU found on Surface Books. Its full performance can only be unlocked on the 'performance' profile. Signed-off-by: Maximilian Luz --- MAINTAINERS | 6 + drivers/platform/surface/Kconfig | 22 ++ drivers/platform/surface/Makefile | 1 + .../surface/surface_platform_profile.c | 190 ++++++++++++++++++ 4 files changed, 219 insertions(+) create mode 100644 drivers/platform/surface/surface_platform_profile.c diff --git a/MAINTAINERS b/MAINTAINERS index 000a82f59c76..a08d65f8f0df 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -11811,6 +11811,12 @@ L: platform-driver-x86@vger.kernel.org S: Maintained F: drivers/platform/surface/surface_hotplug.c +MICROSOFT SURFACE PLATFORM PROFILE DRIVER +M: Maximilian Luz +L: platform-driver-x86@vger.kernel.org +S: Maintained +F: drivers/platform/surface/surface_platform_profile.c + MICROSOFT SURFACE PRO 3 BUTTON DRIVER M: Chen Yu L: platform-driver-x86@vger.kernel.org diff --git a/drivers/platform/surface/Kconfig b/drivers/platform/surface/Kconfig index 179b8c93d7fd..a045425026ae 100644 --- a/drivers/platform/surface/Kconfig +++ b/drivers/platform/surface/Kconfig @@ -132,6 +132,28 @@ config SURFACE_HOTPLUG Select M or Y here, if you want to (fully) support hot-plugging of dGPU devices on the Surface Book 2 and/or 3 during D3cold. +config SURFACE_PLATFORM_PROFILE + tristate "Surface Platform Profile Driver" + depends on SURFACE_AGGREGATOR_REGISTRY + select ACPI_PLATFORM_PROFILE + help + Provides support for the ACPI platform profile on 5th- and later + generation Microsoft Surface devices. + + More specifically, this driver provides ACPI platform profile support + on Microsoft Surface devices with a Surface System Aggregator Module + (SSAM) connected via the Surface Serial Hub (SSH / SAM-over-SSH). In + other words, this driver provides platform profile support on the + Surface Pro 5, Surface Book 2, Surface Laptop, Surface Laptop Go and + later. On those devices, the platform profile can significantly + influence cooling behavior, e.g. setting it to 'quiet' (default) or + 'low-power' can significantly limit performance of the discrete GPU on + Surface Books, while in turn leading to lower power consumption and/or + less fan noise. + + Select M or Y here, if you want to include ACPI platform profile + support on the above mentioned devices. + config SURFACE_PRO3_BUTTON tristate "Power/home/volume buttons driver for Microsoft Surface Pro 3/4 tablet" depends on INPUT diff --git a/drivers/platform/surface/Makefile b/drivers/platform/surface/Makefile index 80035ee540bf..99372c427b73 100644 --- a/drivers/platform/surface/Makefile +++ b/drivers/platform/surface/Makefile @@ -13,4 +13,5 @@ obj-$(CONFIG_SURFACE_AGGREGATOR_CDEV) += surface_aggregator_cdev.o obj-$(CONFIG_SURFACE_AGGREGATOR_REGISTRY) += surface_aggregator_registry.o obj-$(CONFIG_SURFACE_GPE) += surface_gpe.o obj-$(CONFIG_SURFACE_HOTPLUG) += surface_hotplug.o +obj-$(CONFIG_SURFACE_PLATFORM_PROFILE) += surface_platform_profile.o obj-$(CONFIG_SURFACE_PRO3_BUTTON) += surfacepro3_button.o diff --git a/drivers/platform/surface/surface_platform_profile.c b/drivers/platform/surface/surface_platform_profile.c new file mode 100644 index 000000000000..0081b01a5b0f --- /dev/null +++ b/drivers/platform/surface/surface_platform_profile.c @@ -0,0 +1,190 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * Surface Platform Profile / Performance Mode driver for Surface System + * Aggregator Module (thermal subsystem). + * + * Copyright (C) 2021 Maximilian Luz + */ + +#include +#include +#include +#include +#include + +#include + +enum ssam_tmp_profile { + SSAM_TMP_PROFILE_NORMAL = 1, + SSAM_TMP_PROFILE_BATTERY_SAVER = 2, + SSAM_TMP_PROFILE_BETTER_PERFORMANCE = 3, + SSAM_TMP_PROFILE_BEST_PERFORMANCE = 4, +}; + +struct ssam_tmp_profile_info { + __le32 profile; + __le16 unknown1; + __le16 unknown2; +} __packed; + +struct ssam_tmp_profile_device { + struct ssam_device *sdev; + struct platform_profile_handler handler; +}; + +static SSAM_DEFINE_SYNC_REQUEST_CL_R(__ssam_tmp_profile_get, struct ssam_tmp_profile_info, { + .target_category = SSAM_SSH_TC_TMP, + .command_id = 0x02, +}); + +static SSAM_DEFINE_SYNC_REQUEST_CL_W(__ssam_tmp_profile_set, __le32, { + .target_category = SSAM_SSH_TC_TMP, + .command_id = 0x03, +}); + +static int ssam_tmp_profile_get(struct ssam_device *sdev, enum ssam_tmp_profile *p) +{ + struct ssam_tmp_profile_info info; + int status; + + status = ssam_retry(__ssam_tmp_profile_get, sdev, &info); + if (status < 0) + return status; + + *p = le32_to_cpu(info.profile); + return 0; +} + +static int ssam_tmp_profile_set(struct ssam_device *sdev, enum ssam_tmp_profile p) +{ + __le32 profile_le = cpu_to_le32(p); + + return ssam_retry(__ssam_tmp_profile_set, sdev, &profile_le); +} + +static int convert_ssam_to_profile(struct ssam_device *sdev, enum ssam_tmp_profile p) +{ + switch (p) { + case SSAM_TMP_PROFILE_NORMAL: + return PLATFORM_PROFILE_BALANCED; + + case SSAM_TMP_PROFILE_BATTERY_SAVER: + return PLATFORM_PROFILE_LOW_POWER; + + case SSAM_TMP_PROFILE_BETTER_PERFORMANCE: + return PLATFORM_PROFILE_BALANCED_PERFORMANCE; + + case SSAM_TMP_PROFILE_BEST_PERFORMANCE: + return PLATFORM_PROFILE_PERFORMANCE; + + default: + dev_err(&sdev->dev, "invalid performance profile: %d", p); + return -EINVAL; + } +} + +static int convert_profile_to_ssam(struct ssam_device *sdev, enum platform_profile_option p) +{ + switch (p) { + case PLATFORM_PROFILE_LOW_POWER: + return SSAM_TMP_PROFILE_BATTERY_SAVER; + + case PLATFORM_PROFILE_BALANCED: + return SSAM_TMP_PROFILE_NORMAL; + + case PLATFORM_PROFILE_BALANCED_PERFORMANCE: + return SSAM_TMP_PROFILE_BETTER_PERFORMANCE; + + case PLATFORM_PROFILE_PERFORMANCE: + return SSAM_TMP_PROFILE_BEST_PERFORMANCE; + + default: + /* This should have already been caught by platform_profile_store(). */ + WARN(true, "unsupported platform profile"); + return -EOPNOTSUPP; + } +} + +static int ssam_platform_profile_get(struct platform_profile_handler *pprof, + enum platform_profile_option *profile) +{ + struct ssam_tmp_profile_device *tpd; + enum ssam_tmp_profile tp; + int status; + + tpd = container_of(pprof, struct ssam_tmp_profile_device, handler); + + status = ssam_tmp_profile_get(tpd->sdev, &tp); + if (status) + return status; + + status = convert_ssam_to_profile(tpd->sdev, tp); + if (status < 0) + return status; + + *profile = status; + return 0; +} + +static int ssam_platform_profile_set(struct platform_profile_handler *pprof, + enum platform_profile_option profile) +{ + struct ssam_tmp_profile_device *tpd; + int tp; + + tpd = container_of(pprof, struct ssam_tmp_profile_device, handler); + + tp = convert_profile_to_ssam(tpd->sdev, profile); + if (tp < 0) + return tp; + + return ssam_tmp_profile_set(tpd->sdev, tp); +} + +static int surface_platform_profile_probe(struct ssam_device *sdev) +{ + struct ssam_tmp_profile_device *tpd; + + tpd = devm_kzalloc(&sdev->dev, sizeof(*tpd), GFP_KERNEL); + if (!tpd) + return -ENOMEM; + + tpd->sdev = sdev; + + tpd->handler.profile_get = ssam_platform_profile_get; + tpd->handler.profile_set = ssam_platform_profile_set; + + set_bit(PLATFORM_PROFILE_LOW_POWER, tpd->handler.choices); + set_bit(PLATFORM_PROFILE_BALANCED, tpd->handler.choices); + set_bit(PLATFORM_PROFILE_BALANCED_PERFORMANCE, tpd->handler.choices); + set_bit(PLATFORM_PROFILE_PERFORMANCE, tpd->handler.choices); + + platform_profile_register(&tpd->handler); + return 0; +} + +static void surface_platform_profile_remove(struct ssam_device *sdev) +{ + platform_profile_remove(); +} + +static const struct ssam_device_id ssam_platform_profile_match[] = { + { SSAM_SDEV(TMP, 0x01, 0x00, 0x01) }, + { }, +}; +MODULE_DEVICE_TABLE(ssam, ssam_platform_profile_match); + +static struct ssam_device_driver surface_platform_profile = { + .probe = surface_platform_profile_probe, + .remove = surface_platform_profile_remove, + .match_table = ssam_platform_profile_match, + .driver = { + .name = "surface_platform_profile", + .probe_type = PROBE_PREFER_ASYNCHRONOUS, + }, +}; +module_ssam_device_driver(surface_platform_profile); + +MODULE_AUTHOR("Maximilian Luz "); +MODULE_DESCRIPTION("Platform Profile Support for Surface System Aggregator Module"); +MODULE_LICENSE("GPL");