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Bikkina" , Calvin Johnson , Andy Shevchenko , Dmitry Torokhov , Greg Kroah-Hartman , Heikki Krogerus , "Rafael J. Wysocki" , Sakari Ailus , Thomas Gleixner Subject: [net-next PATCH v1 1/2] device property: Introduce fwnode_phy_find_device() Date: Fri, 24 Apr 2020 08:46:16 +0530 Message-Id: <20200424031617.24033-2-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20200424031617.24033-1-calvin.johnson@oss.nxp.com> References: <20200424031617.24033-1-calvin.johnson@oss.nxp.com> Content-Type: text/plain X-ClientProxiedBy: SG2PR01CA0122.apcprd01.prod.exchangelabs.com (2603:1096:4:40::26) To AM0PR04MB5636.eurprd04.prod.outlook.com (2603:10a6:208:130::22) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from lsv03152.swis.in-blr01.nxp.com (14.142.151.118) by SG2PR01CA0122.apcprd01.prod.exchangelabs.com (2603:1096:4:40::26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.2937.13 via Frontend Transport; Fri, 24 Apr 2020 03:16:55 +0000 X-Mailer: git-send-email 2.17.1 X-Originating-IP: [14.142.151.118] X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 0013d35d-ce90-4126-2315-08d7e7fdf4ad X-MS-TrafficTypeDiagnostic: AM0PR04MB6788:|AM0PR04MB6788: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2399; X-Forefront-PRVS: 03838E948C X-Forefront-Antispam-Report: CIP:255.255.255.255;CTRY:;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:AM0PR04MB5636.eurprd04.prod.outlook.com;PTR:;CAT:NONE;SFTY:;SFS:(4636009)(346002)(396003)(39860400002)(366004)(136003)(376002)(2616005)(8676002)(956004)(5660300002)(8936002)(81156014)(186003)(6506007)(16526019)(26005)(54906003)(86362001)(110136005)(52116002)(55236004)(2906002)(1076003)(316002)(478600001)(44832011)(66946007)(6512007)(6666004)(6486002)(1006002)(7416002)(4326008)(66556008)(6636002)(66476007)(110426005)(921003);DIR:OUT;SFP:1101; Received-SPF: None (protection.outlook.com: oss.nxp.com does not designate permitted sender hosts) X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData: 1skwa5esCxR8h/8zdFO5Ag7qfjU7lKO2bnZDDJBagTkWimoP7644Td+b31+UlB8PwKffVNaaiQFPSvguE8aX3oXQrpziFyN5U11jPE7y7leZqKZ3pEB3dd/SYRCncskbtlKah9zlF2MFM6mjGO5b6w== X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-Network-Message-Id: 0013d35d-ce90-4126-2315-08d7e7fdf4ad X-MS-Exchange-CrossTenant-OriginalArrivalTime: 24 Apr 2020 03:17:01.6772 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: 6x3JVh2xIt+3EsIM+hDaNigJjbccAevyIkE0dJb7ATRXslOiJB4BDS9DWY0AUqbTheUOcqxFLvKMvlZPoihOOw== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6788 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Define fwnode_phy_find_device() to iterate an mdiobus and find the phy device of the provided phy fwnode. Signed-off-by: Calvin Johnson --- drivers/base/property.c | 41 ++++++++++++++++++++++++++++++++++++++++ include/linux/property.h | 5 +++++ 2 files changed, 46 insertions(+) diff --git a/drivers/base/property.c b/drivers/base/property.c index 5f35c0ccf5e0..7c0c14c800b7 100644 --- a/drivers/base/property.c +++ b/drivers/base/property.c @@ -870,6 +870,47 @@ int device_get_phy_mode(struct device *dev) } EXPORT_SYMBOL_GPL(device_get_phy_mode); +/** + * fwnode_phy_find_device - Give a phy fwnode to find the corresponding + * phy_device on the mdiobus. + * @phy_fwnode: Pointer to the phy's fwnode. + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode) +{ + struct device *d; + struct mdio_device *mdiodev; + + if (!phy_fwnode) + return NULL; + + d = bus_find_device_by_fwnode(&mdio_bus_type, phy_fwnode); + if (d) { + mdiodev = to_mdio_device(d); + if (mdiodev->flags & MDIO_DEVICE_FLAG_PHY) + return to_phy_device(d); + put_device(d); + } + + return NULL; +} +EXPORT_SYMBOL(fwnode_phy_find_device); + +/** + * device_phy_find_device - For the given device, get the phy_device + * @dev: Pointer to the given device + * + * If successful, returns a pointer to the phy_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + */ +struct phy_device *device_phy_find_device(struct device *dev) +{ + return fwnode_phy_find_device(dev_fwnode(dev)); +} +EXPORT_SYMBOL_GPL(device_phy_find_device); + static void *fwnode_get_mac_addr(struct fwnode_handle *fwnode, const char *name, char *addr, int alen) diff --git a/include/linux/property.h b/include/linux/property.h index d86de017c689..236d656a2981 100644 --- a/include/linux/property.h +++ b/include/linux/property.h @@ -370,9 +370,14 @@ const void *device_get_match_data(struct device *dev); int device_get_phy_mode(struct device *dev); +struct phy_device *device_phy_find_device(struct device *dev); + void *device_get_mac_address(struct device *dev, char *addr, int alen); int fwnode_get_phy_mode(struct fwnode_handle *fwnode); + +struct phy_device *fwnode_phy_find_device(struct fwnode_handle *phy_fwnode); + void *fwnode_get_mac_address(struct fwnode_handle *fwnode, char *addr, int alen); struct fwnode_handle *fwnode_graph_get_next_endpoint( -- 2.17.1