From patchwork Fri Dec 6 03:19:18 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Mario Limonciello X-Patchwork-Id: 848297 Received: from NAM04-BN8-obe.outbound.protection.outlook.com (mail-bn8nam04on2046.outbound.protection.outlook.com [40.107.100.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id AB04A1917FD; Fri, 6 Dec 2024 03:27:44 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=fail smtp.client-ip=40.107.100.46 ARC-Seal: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733455666; cv=fail; b=gCMr6B7xH3RLMJOK0Q+cgFK8XfWGbXj5Ed6tuOrVOybCktm+32tmM4GdJCb22DkXeL1CDn3ltxzC57l8gN24QidyKD3d8V9dhQqy6t6IFxkZmgdI1mQWfFyYf7C3HddbvLhYgZL53UEamTGqmCrJOA5azCe0cYw7es1/OR4NTwQ= ARC-Message-Signature: i=2; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1733455666; c=relaxed/simple; bh=l2U2KjFfLUmyApn2ATtD6b4JTW7rGlGqzZsqU6yv/I8=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=plgTxnoDoMuRHl6NYhGM29eklMORq6xf4tiQC3k6aCQBz/4AZVo0SYZPA91IJInKlw/KcOv40kLrF7LEUI9SaWf+lZH4z6zFczHYj5wYY5Y1liHe+zbPmfgtWgOPiy4+M96U0vPeDex3zr72yYdY95osFbkpU3tzu0j5VX6XYl8= ARC-Authentication-Results: i=2; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com; spf=fail smtp.mailfrom=amd.com; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b=XCIvd1c1; arc=fail smtp.client-ip=40.107.100.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amd.com Authentication-Results: smtp.subspace.kernel.org; spf=fail smtp.mailfrom=amd.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=amd.com header.i=@amd.com header.b="XCIvd1c1" ARC-Seal: i=1; a=rsa-sha256; s=arcselector10001; d=microsoft.com; cv=none; b=Hv59tU+Zb1lV1PQuzaFF0KbdXB7EfFmSwDON0lio/R5CVs502Vc/FWuIp8kwIu1Ti7GFrT7QCysSQLggS293yPUZC35B6ZJPxbGvvwNctmLobCNFhRHmyjdIA0Tq/nlDdhxxL8J4U7T3z8A9lY6hG7sZth201qJdpMrq4L3tCFdO6jJnGkvMMgb9kDpOWNe/pMkf0bzXAtqMnKBVh80mz3G2Ds8mrKQQnPB8udbwF+pJI1KamkyUQI69c121RcTzfwzAj3wTD7n4I03jXQdY/hnF/3NgDU6n7jC/1ldPtPysvXqupyxuGwvQnT9zmzGuEBDiXHCddFrxuPoEUjUwBg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector10001; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=WUTFvONGs1tTyLtC91QLAACJkBeUgHTdatBQ/+u7ljE=; b=H8vE6Qv2vZjCxpvMl+WdgrlQ9z+xDPQtwTC25Ud95a+m478LM4YYu3XuwVM4AltthdgbAFezMjMA0NPPORr7OAudQ6v6fM5iFjZ5bbqUbHXJOc+fzXv7dLjiSIewhleeLrC4+CSFkQhKosPbO+70VtVV25xK0uW39fhCCJwTBxAnaZ0QWzwNJvz7zj70W/RbL9xBHCuCRhfPJKD68hd1edpgolfNjFhb5Y8vY0kBzDOtigh7/UIsT9yLpd86njaUUBRv/KA9mLlbBwAEKZEGBtjVd/EVfk71OncA0upk60DC+TlGTHI6nFekqAaRE2qVD+J7RePcSZoOqlaZ0Y9mWg== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 165.204.84.17) smtp.rcpttodomain=redhat.com smtp.mailfrom=amd.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=amd.com; dkim=none (message not signed); arc=none (0) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amd.com; s=selector1; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=WUTFvONGs1tTyLtC91QLAACJkBeUgHTdatBQ/+u7ljE=; b=XCIvd1c1YoUUXoRDncLRQ32dW3pmD4XMMil8kMIz349pZncAzKygKW1UEJ+925qHjY4FHN0ZN90IQJtbZcdWg/Acm4p0GIVSwWg/2zXmvw25SLqBXOQ/ngvvkV5nHTHklJR9j4SXsdJU7BxHjO68Vy1MFXdX2hiXjdiyvvmsQu4= Received: from BY3PR10CA0007.namprd10.prod.outlook.com (2603:10b6:a03:255::12) by IA1PR12MB9031.namprd12.prod.outlook.com (2603:10b6:208:3f9::19) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.8230.12; Fri, 6 Dec 2024 03:27:39 +0000 Received: from SJ1PEPF000023CF.namprd02.prod.outlook.com (2603:10b6:a03:255:cafe::4a) by BY3PR10CA0007.outlook.office365.com (2603:10b6:a03:255::12) with Microsoft SMTP Server (version=TLS1_3, cipher=TLS_AES_256_GCM_SHA384) id 15.20.8230.10 via Frontend Transport; Fri, 6 Dec 2024 03:27:39 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 165.204.84.17) smtp.mailfrom=amd.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=amd.com; Received-SPF: Pass (protection.outlook.com: domain of amd.com designates 165.204.84.17 as permitted sender) receiver=protection.outlook.com; client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by SJ1PEPF000023CF.mail.protection.outlook.com (10.167.244.11) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8230.7 via Frontend Transport; Fri, 6 Dec 2024 03:27:39 +0000 Received: from AUS-P9-MLIMONCI.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Thu, 5 Dec 2024 21:26:28 -0600 From: Mario Limonciello To: Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= CC: "Rafael J . Wysocki" , Len Brown , Maximilian Luz , Lee Chun-Yi , "Shyam Sundar S K" , Corentin Chary , "Luke D . Jones" , Ike Panhc , Henrique de Moraes Holschuh , "Alexis Belmonte" , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , Ai Chao , Gergo Koteles , open list , "open list:ACPI" , "open list:MICROSOFT SURFACE PLATFORM PROFILE DRIVER" , "open list:THINKPAD ACPI EXTRAS DRIVER" , Mark Pearson , Matthew Schwartz , Mario Limonciello , Armin Wolf Subject: [PATCH v10 22/22] Documentation: Add documentation about class interface for platform profiles Date: Thu, 5 Dec 2024 21:19:18 -0600 Message-ID: <20241206031918.1537-23-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241206031918.1537-1-mario.limonciello@amd.com> References: <20241206031918.1537-1-mario.limonciello@amd.com> Precedence: bulk X-Mailing-List: linux-acpi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SJ1PEPF000023CF:EE_|IA1PR12MB9031:EE_ X-MS-Office365-Filtering-Correlation-Id: f7b29437-0bb4-4069-77b7-08dd15a5efd4 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|36860700013|376014|1800799024|7416014|82310400026; X-Microsoft-Antispam-Message-Info: =?utf-8?q?OY7tJ5U6c49fQbdmdyJyWmDBl7jeNuC?= =?utf-8?q?krDCdrg9PJb3GjXU2w3cxPn9hyx0RlzkmDfiBw0gxwoCQTEDrhIeqYh6MnwlNn7Rx?= =?utf-8?q?G+nPWuHTM64IvagvWpa3bfQXD/Gh4XaCOTLS8/9Ax9GiBXZPGnzLbnqiSkOV65OdU?= =?utf-8?q?NBzeQk6szSq5pvrx7g/gt42g5oC/5hUBHfJStbzKQ4QLz+M0sxjoDrh46j1ZShI5C?= =?utf-8?q?l3l/wondSePdVfu9kfCqoUBoEwCGhnUB+NzIemeecIqq/KdlMZjB+ZYgi/E4yr3JG?= =?utf-8?q?Ta4AuEdRB+mt7XFRhDbu9lsdKjzBpfZmdFIUqJOfxfcQT961C4oIDDQdtgFowYw3y?= =?utf-8?q?FU273jrOM65ROHS/AmaHjo6HsQMKGDhELwZ7/QCSZmbbYMNCp0W8bHrwykJFrGIQU?= =?utf-8?q?cKqLE5wHeA9wI+tQfYOJ4mlYPv9qEzIxYLVhRXVUWEEoM+1nQaBgANP02ZDB8MBS3?= =?utf-8?q?NN4XfAyrFBALUREFbOfgPdx9KgDNml6+lDox/95QZ1z3569COYeu0rNJXiGAie7MH?= =?utf-8?q?9KkMLL3kub8tBdOHYuCfB5IC1F36k7YPb14lX3qrxW2HlFrBwiIs1nILYm4zQHfO5?= =?utf-8?q?7t7hjrwZxemVfMesY6QvKoS4sLHVnzU6vTyrl89H9H/K2J6yc4ix/jcAGpWi2sDni?= =?utf-8?q?YycHGZfAHA2kWEU4qQZVs7u9be8mgD5zNCsV8LvowGADfwmnDYNMT6/PPMBIMQiFH?= =?utf-8?q?DPemASXxZH1RuWZ11J/FEbdScYJQQrXXWVNOsPnvtn4GRIFAlG0GNvL3QYB234MQF?= =?utf-8?q?3dN/Q0p0lmLDGvSAwcnzqLXj1hoFYAaFagmof/DaIMYK2a8i75DttorggoeN9N9wS?= =?utf-8?q?Lb6kCJso+kkBwPtyOM2LLUZYM1Kn5oD3ReXXMbEVtyGaPBx7kjWksM3mlQMHB9qfL?= =?utf-8?q?mpsNE5IGOiMWRvnJcoxMaNErf90Y9gfQFOLRzanozjFUEX8HMSNvPPn4okEo+C8W+?= =?utf-8?q?NK1DfMXNq82BFBkyuYWnsv89ZHUJ48XaFuoohiW+Ib+wgtpp3LH5A4WBj98BSTvbI?= =?utf-8?q?vEI4E0H4/fHV5T4E45ggmU/7fVtJKnG/m3VCuFVInj2YdXOuYCCpj5ohfLB5IwIca?= =?utf-8?q?sd0DIT33rDtb5+iL7GTVUcRpBrIllqqqIx2SAQHpgXWpHr+0dgP6qX1YPIlHsdI+K?= =?utf-8?q?cE8qNBWEjrcQDPKaJ0Oe9PJscEX/0fqYBP3EEmiTPGKJhsW1w2bPfhVGmqZIJAE60?= =?utf-8?q?6BoFjmc08kLPKS2pq/O146Irksv9pQ6o5P99NIkwnTqGFzHUSGJJjMuOm+6KJvegF?= =?utf-8?q?Q3H/5Bj+b8QeMITUY6YcTuPcWo6CobqIRNVWCuxYAF5gUZviZ3nqyVCklpC7P4z3w?= =?utf-8?q?OR1l+Sj6jUU4aZIeEdaFhQbIQWf6BaJ+Vy54dk+yYYvQm3zeM1q3JAg7ljVsi0yEz?= =?utf-8?q?Kjv8OO61L6M?= X-Forefront-Antispam-Report: CIP:165.204.84.17; CTRY:US; LANG:en; SCL:1; SRV:; IPV:CAL; SFV:NSPM; H:SATLEXMB04.amd.com; PTR:InfoDomainNonexistent; CAT:NONE; SFS:(13230040)(36860700013)(376014)(1800799024)(7416014)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Dec 2024 03:27:39.2381 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f7b29437-0bb4-4069-77b7-08dd15a5efd4 X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d; Ip=[165.204.84.17]; Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: SJ1PEPF000023CF.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: IA1PR12MB9031 The class interface allows changing multiple platform profiles on a system to different values. The semantics of it are similar to the legacy interface. Reviewed-by: Armin Wolf Tested-by: Mark Pearson Reviewed-by: Mark Pearson Reviewed-by: Ilpo Järvinen Signed-off-by: Mario Limonciello --- v10: * Add custom section --- .../ABI/testing/sysfs-platform_profile | 5 +++ .../userspace-api/sysfs-platform_profile.rst | 38 +++++++++++++++++++ 2 files changed, 43 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-platform_profile b/Documentation/ABI/testing/sysfs-platform_profile index baf1d125f9f83..125324ab53a96 100644 --- a/Documentation/ABI/testing/sysfs-platform_profile +++ b/Documentation/ABI/testing/sysfs-platform_profile @@ -33,3 +33,8 @@ Description: Reading this file gives the current selected profile for this source such as e.g. a hotkey triggered profile change handled either directly by the embedded-controller or fully handled inside the kernel. + + This file may also emit the string 'custom' to indicate + that multiple platform profiles drivers are in use but + have different values. This string can not be written to + this interface and is solely for informational purposes. diff --git a/Documentation/userspace-api/sysfs-platform_profile.rst b/Documentation/userspace-api/sysfs-platform_profile.rst index 4fccde2e45639..7f013356118ae 100644 --- a/Documentation/userspace-api/sysfs-platform_profile.rst +++ b/Documentation/userspace-api/sysfs-platform_profile.rst @@ -40,3 +40,41 @@ added. Drivers which wish to introduce new profile names must: 1. Explain why the existing profile names cannot be used. 2. Add the new profile name, along with a clear description of the expected behaviour, to the sysfs-platform_profile ABI documentation. + +"Custom" profile support +======================== +The platform_profile class also supports profiles advertising a "custom" +profile. This is intended to be set by drivers when the setttings in the +driver have been modified in a way that a standard profile doesn't represent +the current state. + +Multiple driver support +======================= +When multiple drivers on a system advertise a platform profile handler, the +platform profile handler core will only advertise the profiles that are +common between all drivers to the ``/sys/firmware/acpi`` interfaces. + +This is to ensure there is no ambiguity on what the profile names mean when +all handlers don't support a profile. + +Individual drivers will register a 'platform_profile' class device that has +similar semantics as the ``/sys/firmware/acpi/platform_profile`` interface. + +To discover which driver is associated with a platform profile handler the +user can read the ``name`` attribute of the class device. + +To discover available profiles from the class interface the user can read the +``choices`` attribute. + +If a user wants to select a profile for a specific driver, they can do so +by writing to the ``profile`` attribute of the driver's class device. + +This will allow users to set different profiles for different drivers on the +same system. If the selected profile by individual drivers differs the +platform profile handler core will display the profile 'custom' to indicate +that the profiles are not the same. + +While the ``platform_profile`` attribute has the value ``custom``, writing a +common profile from ``platform_profile_choices`` to the platform_profile +attribute of the platform profile handler core will set the profile for all +drivers.