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client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by MWH0EPF000A6734.mail.protection.outlook.com (10.167.249.26) 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 03:25:51 +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 21:25:48 -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 13/22] ACPI: platform_profile: Add profile attribute for class interface Date: Thu, 5 Dec 2024 21:19:09 -0600 Message-ID: <20241206031918.1537-14-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: MWH0EPF000A6734:EE_|SJ2PR12MB8159:EE_ X-MS-Office365-Filtering-Correlation-Id: 100f811b-ac8f-48ea-ac09-08dd15a5afa9 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; ARA:13230040|1800799024|36860700013|7416014|376014|82310400026; X-Microsoft-Antispam-Message-Info: =?utf-8?q?Pniu4TIJjHWl1xOp2uWfDKWUxhnDeZ5?= =?utf-8?q?TbA5ZxJuPL2QRpXusLZn0bOeSIJre7vOCovpAowVnzLs0GJFXMJDwfIIrB+eoh1Cu?= =?utf-8?q?xHMHBEdE5yZmaFVWWdSHUI6f9xvsXAYuscvtaYkbfrVMpi6YNsaSmqOj6I/CuojD0?= =?utf-8?q?0m/IIgRLqPoDwUU3gO8q+27YEw0PPo8igZF49MQgDtQHSeoFASlXcDgmoSnf83M1f?= =?utf-8?q?ktwMBVrUj3WxbP+yec4dxfHhew8Xkpocfn0nFO6i9GgSAuNQPYidY36u2/D2CiViu?= =?utf-8?q?GMsaSN6a2RpY1uChwa938fcIF2kZkm4qd+1jj4s4Ybh60qyhnWiRFkEJEkesNJC3s?= =?utf-8?q?JAdr3afXBkOSYoRAs18rxbOga4GlaGj3GwvwXP4hmHIU+3+EynXAypsO8vSexGQju?= =?utf-8?q?UVjGXPaC7zt90Px+DQk98ABa2HdjU2s5n4WBWpZQCZTI5+rFswQc2EOT5IuyJjuIr?= =?utf-8?q?4g/QqP5pgc+v+3qi37aoDNBeo9dFP8X+w38KQgBA0bJ285ukz8q9dwiB6S4Q/sZ1Z?= =?utf-8?q?pMRHDYHn5UlpfmFTGZSnL0B5KTW1Y9r1HbFYGRxGpzxNcmlr8Kv/dIdugtTrqqaoM?= =?utf-8?q?GW3y2IgAtL4uyumo2g5qc+v494P6YJ0o5z3almHLBh3R/QpumR/sBlZwhyWqDxgjp?= =?utf-8?q?coyvpqjenr63fNaWlNm75GAe7aqudlgpbkP0BXq5hDinCqPzunZXv4dTOSiZDOYrI?= =?utf-8?q?a4bd1D5Hi6jFU+Wrl7Je3eJ3Qem/gY4rqBtPqll1eYgBLp0FQFbP0wd6oPTzk+xwp?= =?utf-8?q?FSFwWxJwp2qRMZES8X0JXQvje5cIpvb3XxU7mR7qOnSAwyR2h+3eM9iBKiS3wcSvm?= =?utf-8?q?T4TIJeOLCa7b87HaCd1nbbwN0eXzSdOt+/NXKEJazp+B+de9DnEViFnwlxhgACQhn?= =?utf-8?q?ZszERDKwIE+ZAxRu5Epkr7E+30Q9Ux5zL7793z8vjbN1l9A2qylr/1IWXsjdzrGEj?= =?utf-8?q?JJw+A+2xlqxciBGN/SH49wNeJeQ2JqbFa7WyBRIrGciF+GSaV4sZmF5nbzVCw7+Wj?= =?utf-8?q?F012xQBU71iw8AA01EhZqcOSU34rIDyAVc8Gt/UmCZ0pdir8TnbB+F8GGtnuGJo+L?= =?utf-8?q?pTAjLM9bHGndutVX95ljPrt4x34FsAxvce5XCN5dcGTovwfgC7L6zG31Oe9LAb3Pz?= =?utf-8?q?8LXsWUb6ktdUGO0cHnhsixV7hKZh0/Ln69TAI2t5xaCs9nNygmxg6b1lnVgMsak2x?= =?utf-8?q?HEXB3mkBS7DcfwfMe9b1m8ELhODUrjthZtDccZLdn67SWGX54EtLBAegdTzRuvQn4?= =?utf-8?q?Ax9WDH3bTjcG07zoK3FKBgR2JFrtsR2Hh902A3pObcW0cRUtgTxQswZ2plEA7cDV4?= =?utf-8?q?Etfkj71t5qKFf5neIDg1Bh4X6h8cAGZR9GZM6Oj0ftckGJ4AuAWgNTfVmLYtAj2w+?= =?utf-8?q?XJDPvF7Fxd1?= 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)(1800799024)(36860700013)(7416014)(376014)(82310400026); DIR:OUT; SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 06 Dec 2024 03:25:51.5679 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 100f811b-ac8f-48ea-ac09-08dd15a5afa9 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: MWH0EPF000A6734.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ2PR12MB8159 Reading and writing the `profile` sysfs file will use the callbacks for the platform profile handler to read or set the given profile. Tested-by: Mark Pearson Reviewed-by: Mark Pearson Reviewed-by: Armin Wolf Reviewed-by: Ilpo Järvinen Signed-off-by: Mario Limonciello --- v10: * Whitespace --- drivers/acpi/platform_profile.c | 105 ++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) diff --git a/drivers/acpi/platform_profile.c b/drivers/acpi/platform_profile.c index 885f41bca6c25..d2c83cb258296 100644 --- a/drivers/acpi/platform_profile.c +++ b/drivers/acpi/platform_profile.c @@ -47,6 +47,55 @@ static ssize_t _commmon_choices_show(unsigned long *choices, char *buf) return len; } +/** + * _store_class_profile - Set the profile for a class device + * @dev: The class device + * @data: The profile to set + * + * Return: 0 on success, -errno on failure + */ +static int _store_class_profile(struct device *dev, void *data) +{ + struct platform_profile_handler *handler; + int *bit = (int *)data; + + lockdep_assert_held(&profile_lock); + handler = dev_get_drvdata(dev); + if (!test_bit(*bit, handler->choices)) + return -EOPNOTSUPP; + + return handler->profile_set(handler, *bit); +} + +/** + * get_class_profile - Show the current profile for a class device + * @dev: The class device + * @profile: The profile to return + * + * Return: 0 on success, -errno on failure + */ +static int get_class_profile(struct device *dev, + enum platform_profile_option *profile) +{ + struct platform_profile_handler *handler; + enum platform_profile_option val; + int err; + + lockdep_assert_held(&profile_lock); + handler = dev_get_drvdata(dev); + err = handler->profile_get(handler, &val); + if (err) { + pr_err("Failed to get profile for handler %s\n", handler->name); + return err; + } + + if (WARN_ON(val >= PLATFORM_PROFILE_LAST)) + return -EINVAL; + *profile = val; + + return 0; +} + /** * name_show - Show the name of the profile handler * @dev: The device @@ -81,9 +130,65 @@ static ssize_t choices_show(struct device *dev, } static DEVICE_ATTR_RO(choices); +/** + * profile_show - Show the current profile for a class device + * @dev: The device + * @attr: The attribute + * @buf: The buffer to write to + * + * Return: The number of bytes written + */ +static ssize_t profile_show(struct device *dev, + struct device_attribute *attr, + char *buf) +{ + enum platform_profile_option profile = PLATFORM_PROFILE_LAST; + int err; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + err = get_class_profile(dev, &profile); + if (err) + return err; + } + + return sysfs_emit(buf, "%s\n", profile_names[profile]); +} + +/** + * profile_store - Set the profile for a class device + * @dev: The device + * @attr: The attribute + * @buf: The buffer to read from + * @count: The number of bytes to read + * + * Return: The number of bytes read + */ +static ssize_t profile_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + int index, ret; + + index = sysfs_match_string(profile_names, buf); + if (index < 0) + return -EINVAL; + + scoped_cond_guard(mutex_intr, return -ERESTARTSYS, &profile_lock) { + ret = _store_class_profile(dev, &index); + if (ret) + return ret; + } + + sysfs_notify(acpi_kobj, NULL, "platform_profile"); + + return count; +} +static DEVICE_ATTR_RW(profile); + static struct attribute *profile_attrs[] = { &dev_attr_name.attr, &dev_attr_choices.attr, + &dev_attr_profile.attr, NULL }; ATTRIBUTE_GROUPS(profile);