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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 CH2PEPF00000145.mail.protection.outlook.com (10.167.244.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8137.17 via Frontend Transport; Thu, 7 Nov 2024 06:03:45 +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, 7 Nov 2024 00:03:43 -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 Subject: [PATCH v5 11/20] ACPI: platform_profile: Add choices attribute for class interface Date: Thu, 7 Nov 2024 00:02:45 -0600 Message-ID: <20241107060254.17615-12-mario.limonciello@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20241107060254.17615-1-mario.limonciello@amd.com> References: <20241107060254.17615-1-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: CH2PEPF00000145:EE_|DM3PR12MB9413:EE_ X-MS-Office365-Filtering-Correlation-Id: 3165bf55-0f15-4754-ebce-08dcfef1f085 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|82310400026|376014|7416014|1800799024|36860700013; X-Microsoft-Antispam-Message-Info: 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 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)(82310400026)(376014)(7416014)(1800799024)(36860700013);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Nov 2024 06:03:45.3305 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 3165bf55-0f15-4754-ebce-08dcfef1f085 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: CH2PEPF00000145.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM3PR12MB9413 The `choices` file will show all possible choices that a given platform profile handler can support. Tested-by: Mark Pearson Signed-off-by: Mario Limonciello --- v5: * Fix kdoc * Add tag * Fix whitespace * Adjust mutex use --- drivers/acpi/platform_profile.c | 65 +++++++++++++++++++++++++++++++++ 1 file changed, 65 insertions(+) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c index f605c2bd35c68..5e0bb91c5f451 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -25,6 +25,46 @@ static_assert(ARRAY_SIZE(profile_names) == PLATFORM_PROFILE_LAST); static DEFINE_IDA(platform_profile_ida); +/** + * _commmon_choices_show - Show the available profile choices + * @choices: The available profile choices + * @buf: The buffer to write to + * Return: The number of bytes written + */ +static ssize_t _commmon_choices_show(unsigned long choices, char *buf) +{ + int i, len = 0; + + for_each_set_bit(i, &choices, PLATFORM_PROFILE_LAST) { + if (len == 0) + len += sysfs_emit_at(buf, len, "%s", profile_names[i]); + else + len += sysfs_emit_at(buf, len, " %s", profile_names[i]); + } + len += sysfs_emit_at(buf, len, "\n"); + + return len; +} + +/** + * _get_class_choices - Get the available profile choices for a class device + * @dev: The class device + * @choices: Pointer to return the available profile choices + * Return: The available profile choices + */ +static int _get_class_choices(struct device *dev, unsigned long *choices) +{ + struct platform_profile_handler *handler; + int i; + + lockdep_assert_held(&profile_lock); + handler = dev_get_drvdata(dev); + for_each_set_bit(i, handler->choices, PLATFORM_PROFILE_LAST) + *choices |= BIT(i); + + return 0; +} + /** * name_show - Show the name of the profile handler * @dev: The device @@ -44,9 +84,34 @@ static ssize_t name_show(struct device *dev, return -ERESTARTSYS; } +/** + * choices_show - Show the available profile choices + * @dev: The device + * @attr: The attribute + * @buf: The buffer to write to + */ +static ssize_t choices_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + unsigned long choices = 0; + int err; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + err = _get_class_choices(dev, &choices); + if (err) + return err; + } + + return _commmon_choices_show(choices, buf); +} + static DEVICE_ATTR_RO(name); +static DEVICE_ATTR_RO(choices); + static struct attribute *profile_attrs[] = { &dev_attr_name.attr, + &dev_attr_choices.attr, NULL }; ATTRIBUTE_GROUPS(profile);