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Fri, 24 Dec 2021 04:15:17 +0000 From: Quan Nguyen To: Joel Stanley , Andrew Jeffery , Jean Delvare , Guenter Roeck , Rob Herring , Lee Jones , Jonathan Corbet , linux-hwmon@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-aspeed@lists.ozlabs.org, openbmc@lists.ozlabs.org, Mark Brown , Greg Kroah-Hartman , "Rafael J . Wysocki" , Derek Kiernan , Dragan Cvetic , Arnd Bergmann , Gustavo Pimentel Subject: [PATCH v6 5/9] regmap: Introduces regmap lock helpers Date: Fri, 24 Dec 2021 11:13:48 +0700 Message-Id: <20211224041352.29405-6-quan@os.amperecomputing.com> X-Mailer: git-send-email 2.28.0 In-Reply-To: <20211224041352.29405-1-quan@os.amperecomputing.com> References: <20211224041352.29405-1-quan@os.amperecomputing.com> X-ClientProxiedBy: SG2PR06CA0134.apcprd06.prod.outlook.com (2603:1096:1:1f::12) To SJ0PR01MB7282.prod.exchangelabs.com (2603:10b6:a03:3f2::24) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 5ae92ab6-25d7-4939-4bbe-08d9c693fdfe X-MS-TrafficTypeDiagnostic: BYAPR01MB5189:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:229; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: FYsuEC2P2WngFfY+pK1uXaFknqPHLKeMF38EDtvmHW8Ms/H481bAoZyDzGp0iBqi09Trxm1uAOebZmH5qqDu8fnMp7nkcJfCTeIop3E/GacdFi57dLtGSvxvmTz5tUNMa3s6vm1CJzq4kYxKfOEUNFSVTOZ4F9sYDP+OJ4gKfbmlqQB85kynovg/OqKud7jmKBFvQRNYJzib+O0gNmZZX+/yTPla1zTkmBA0tzd5aGkt7i/owODYeoNQs5+CzsxSMBEBbWZpr0h+vZ+QCNDzReTXBMtNRX7oUBcswN0udkWsOpqk+xD0anuoB0N6AOdaPG+6WA+kIia4pBgWZsIbe7cOuG6h918EEGxJmNQi0oiVwqTmVK2tb4yrNcm/XEf6RVB5JFXY+Eb5xDYnG1mslyRHUwRv3lyoMDw46Q1Uigodj56qrvNN9SEN9ZthyTY/adfYBf19s00j2SSaz4OqI4uZmwB7X51IIxn90Uz4zrWJekb+/XCatZ7Ze5VRX/YE2brHtAFtWb0GDU119SW7wOL9ESy5BVJKDXarW/o3TDjcLrufHik4UpcDmEuqU7kHWNvELehYwdafp+z/xg6wajO6BHjCnFLfqtHQ6+igIGnnNjQei9gODLmaNluPBkuy5LMj13jTvwZLtipq5/j/g9H95q1Y2a/byriOoyHo+aDCm4CgFZySwFzsHAXH0291KUGxIWjLXEPGtfo+Omc1q4QkG4PuV+lSTme7HQaTtmM= X-Forefront-Antispam-Report: CIP:255.255.255.255; CTRY:; LANG:en; SCL:1; SRV:; IPV:NLI; SFV:NSPM; H:SJ0PR01MB7282.prod.exchangelabs.com; PTR:; CAT:NONE; SFS:(4636009)(366004)(110136005)(54906003)(86362001)(38100700002)(38350700002)(83380400001)(66476007)(52116002)(5660300002)(107886003)(2616005)(8676002)(66946007)(6666004)(66556008)(2906002)(508600001)(1076003)(4326008)(316002)(6506007)(8936002)(6486002)(26005)(186003)(6512007)(7416002)(921005); DIR:OUT; SFP:1102; X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: os.amperecomputing.com X-MS-Exchange-CrossTenant-Network-Message-Id: 5ae92ab6-25d7-4939-4bbe-08d9c693fdfe X-MS-Exchange-CrossTenant-AuthSource: SJ0PR01MB7282.prod.exchangelabs.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Dec 2021 04:15:17.6579 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 3bc2b170-fd94-476d-b0ce-4229bdc904a7 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 08mA/gR6HXPFlYnkzbBCCH6JdgE4RiSL0biWXEMdMHEqaxg9vyYj/23RDCR6yq+esJj4Y2Z3WyfpF514YiVZ8OywBl8UZYrRAZQdoL7fot4= X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR01MB5189 X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Open Source Submission , "Thang Q . Nguyen" , Phong Vo , Quan Nguyen Errors-To: openbmc-bounces+incoming=patchwork.ozlabs.org@lists.ozlabs.org Sender: "openbmc" This commit introduces regmap_acquire/release_lock() functions and makes them available for drivers that need atomic access of regmap registers Signed-off-by: Quan Nguyen --- Change in v6: + First introduced in v6 [Quan] drivers/base/regmap/regmap.c | 12 ++++++++++++ include/linux/regmap.h | 2 ++ 2 files changed, 14 insertions(+) diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 2d74f9f82aa9..36921309725b 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -87,6 +87,18 @@ bool regmap_check_range_table(struct regmap *map, unsigned int reg, } EXPORT_SYMBOL_GPL(regmap_check_range_table); +void regmap_acquire_lock(struct regmap *map) +{ + map->lock(map->lock_arg); +} +EXPORT_SYMBOL_GPL(regmap_acquire_lock); + +void regmap_release_lock(struct regmap *map) +{ + map->unlock(map->lock_arg); +} +EXPORT_SYMBOL_GPL(regmap_release_lock); + bool regmap_writeable(struct regmap *map, unsigned int reg) { if (map->max_register && reg > map->max_register) diff --git a/include/linux/regmap.h b/include/linux/regmap.h index 22652e5fbc38..0ed12e6ad4fb 100644 --- a/include/linux/regmap.h +++ b/include/linux/regmap.h @@ -1194,6 +1194,8 @@ int regmap_async_complete(struct regmap *map); bool regmap_can_raw_write(struct regmap *map); size_t regmap_get_raw_read_max(struct regmap *map); size_t regmap_get_raw_write_max(struct regmap *map); +void regmap_acquire_lock(struct regmap *map); +void regmap_release_lock(struct regmap *map); int regcache_sync(struct regmap *map); int regcache_sync_region(struct regmap *map, unsigned int min,