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Wysocki" , Jeremy Linton , Andrew Lunn , Andy Shevchenko , Florian Fainelli , Russell King - ARM Linux admin , Cristi Sovaiala , Florin Laurentiu Chiculita , Ioana Ciornei , Madalin Bucur , Heikki Krogerus , Marcin Wojtas , Pieter Jansen Van Vuuren , Jon Cc: linux.cj@gmail.com, Laurentiu Tudor , Diana Madalina Craciun , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, netdev@vger.kernel.org, Calvin Johnson , "David S. Miller" , Heiner Kallweit , Jakub Kicinski Subject: [net-next PATCH v2 08/14] net: mdiobus: Introduce fwnode_mdiobus_register() Date: Tue, 15 Dec 2020 22:13:09 +0530 Message-Id: <20201215164315.3666-9-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20201215164315.3666-1-calvin.johnson@oss.nxp.com> References: <20201215164315.3666-1-calvin.johnson@oss.nxp.com> Content-Type: text/plain X-Originating-IP: [14.142.151.118] X-ClientProxiedBy: SG2PR06CA0152.apcprd06.prod.outlook.com (2603:1096:1:1f::30) 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 SG2PR06CA0152.apcprd06.prod.outlook.com (2603:1096:1:1f::30) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3654.12 via Frontend Transport; Tue, 15 Dec 2020 16:44:37 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 9e0b2ea9-85ec-42db-8483-08d8a118b949 X-MS-TrafficTypeDiagnostic: AM0PR04MB6963: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:4502; X-MS-Exchange-SenderADCheck: 1 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: Hr6OcMjCFPxYLUYuK1jyIbhPBChf/RBwfT8rVdsPZMlhlKuf2P1kn3kwL2QyuRKfV2dmnNIr5bqL9wfin90isxFjQjJKb1NZ0AVcX4GFqrL5wWw5Be2OX1F39g5gEj1Xg90RCkFVc659v4JELDP0gUCOGCladOokBZ7Gu4iLDDjcAGHiKj61iR6n9cISKbGU0G3ATCQMgDgzxkPDABvYSKVV4VTbACxWZTThdivPmXCLraBWi2BNHU8f46vNqUAqFMhHioZ1p7yLmio9d7wd/jdcqzZs4/SVM4S/iAWqVKzAHceW5rHWm8C+Q5YC8GfCDNO6umsgcxyI1v+KhDbpeYhE6qS3ocAXCgWV3OulrINIFCseDhN7iwlujkB4+mNppoiUsRieCBzKoMhsTny7YQ== 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;SFS:(4636009)(366004)(54906003)(8936002)(4326008)(6506007)(498600001)(83380400001)(66946007)(921005)(2616005)(956004)(86362001)(52116002)(16526019)(8676002)(2906002)(26005)(6512007)(44832011)(7416002)(186003)(5660300002)(55236004)(1006002)(1076003)(66476007)(110136005)(6486002)(66556008)(6666004)(110426006);DIR:OUT;SFP:1101; X-MS-Exchange-AntiSpam-MessageData: =?us-ascii?Q?IskicbV8uy7tPwMaWewdy4OB/TodnmaYra1vsxh8PgOw1+GzEDuikjYlq+r9?= =?us-ascii?Q?4plLSOW/PQHV3ed+WXX7CpV4NImsDGj433m+45xQD6DdFSUOj/uKGpf+IUUH?= =?us-ascii?Q?v8ESdatPykWLoXWJdrVehjGdaFLXV0Z7TN3wzk1FkJGvvSuQWPJQTldlt8li?= =?us-ascii?Q?7aaiwVDeY742KKmozwdpPv+Bq18sHBRF+H4n9q796mEIWwPTLLDMH9PgCCUL?= =?us-ascii?Q?nBZ7YVfwHg/KQ9ADOJ5/42p9GuADaccunWC12KpRHIuydEMlDy3JzD+Z260S?= =?us-ascii?Q?2OVIzYczXSPCT61/4FgThytj2ePb5vOv6RafujbdTBJg8DT9zd9kjy7iqNzC?= =?us-ascii?Q?5ToBYUxmiUoLhN5oW4Lzwj4FiKvbtN1vg2wdQtpISGXSnXndqfD/xgo0GHZy?= =?us-ascii?Q?RkxrdQw2zyp5HlkRmeQ5DejBj3YvID0KWQ41m3OCLvckVWYwI/OpCBbVTSDp?= =?us-ascii?Q?toTlFCjc8qlqoswn7VxokdZ/6foduPeLte6hjmDsLftpMRoiFjbLa77nqZ7C?= =?us-ascii?Q?QHJ/k57DmwvluuXgwazr7xO/GjmN03pW5WzeSzXlKFJb8K0/l1QhRxvUd611?= =?us-ascii?Q?Oe6YzsJ1k/35KvAjyNbZ2SfieIEpnNP7/z4F9dHqqQEVEF6vuvwwlDkqQFdH?= =?us-ascii?Q?rBVtaPKmS+8goz/FIWQnSQvVu0saxCRwvOHvqgVFcytMMwPfsdWS+TgeJR3g?= =?us-ascii?Q?C03l32Jylh78JZnNR9IYxAb4Ej/Xfx9ZPBp6ZFs1a56GvNte18OOoAHCob75?= =?us-ascii?Q?9Z3EyX4974sDoLvdS+Gi6yi7MRk75DMYQ4L2q5XGr0Zzg2Dgh3fNv7P9lvNr?= =?us-ascii?Q?aG6pycM7kUAUd4CQPsOhHkTNQsYScRdFhvKm7VzUbYiSaXgWZvpyrQjWV+TK?= =?us-ascii?Q?jj92MSPxSMN5/HzIVV/V0mxwDwt2eJnNZy241u+KRe85/Se3OPNq/P7hAAkl?= =?us-ascii?Q?G6ysgRjQoB/2KT+pTxyij68XW3tLrOSQ9/YV0twmb7V7MYe7bSGKDUmxiOZQ?= =?us-ascii?Q?+Gu/?= X-OriginatorOrg: oss.nxp.com X-MS-Exchange-CrossTenant-AuthSource: AM0PR04MB5636.eurprd04.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 15 Dec 2020 16:44:43.2235 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 686ea1d3-bc2b-4c6f-a92c-d99c5c301635 X-MS-Exchange-CrossTenant-Network-Message-Id: 9e0b2ea9-85ec-42db-8483-08d8a118b949 X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: LB90F5j+BKGGLiV3lQcMdciHV7ITcW68xIPU9yb/kL54UkMY+k1aWBbBC5h76lliuoM31RInpb34eYUoYW5udg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: AM0PR04MB6963 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org Introduce fwnode_mdiobus_register() to register PHYs on the mdiobus. If the fwnode is DT node, then call of_mdiobus_register(). If it is an ACPI node, then: - disable auto probing of mdiobus - register mdiobus - save fwnode to mdio structure - loop over child nodes & register a phy_device for each PHY Signed-off-by: Calvin Johnson --- Changes in v2: None drivers/net/phy/mdio_bus.c | 50 ++++++++++++++++++++++++++++++++++++++ include/linux/phy.h | 1 + 2 files changed, 51 insertions(+) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 3361a1a86e97..e7ad34908936 100644 --- a/drivers/net/phy/mdio_bus.c +++ b/drivers/net/phy/mdio_bus.c @@ -8,6 +8,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include #include #include #include @@ -567,6 +568,55 @@ static int mdiobus_create_device(struct mii_bus *bus, return ret; } +/** + * fwnode_mdiobus_register - Register mii_bus and create PHYs from fwnode + * @mdio: pointer to mii_bus structure + * @fwnode: pointer to fwnode of MDIO bus. + * + * This function registers the mii_bus structure and registers a phy_device + * for each child node of @fwnode. + */ +int fwnode_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode) +{ + struct fwnode_handle *child; + unsigned long long addr; + acpi_status status; + int ret; + + if (is_of_node(fwnode)) { + return of_mdiobus_register(mdio, to_of_node(fwnode)); + } else if (is_acpi_node(fwnode)) { + /* Mask out all PHYs from auto probing. */ + mdio->phy_mask = ~0; + ret = mdiobus_register(mdio); + if (ret) + return ret; + + mdio->dev.fwnode = fwnode; + /* Loop over the child nodes and register a phy_device for each PHY */ + fwnode_for_each_child_node(fwnode, child) { + status = acpi_evaluate_integer(ACPI_HANDLE_FWNODE(child), + "_ADR", NULL, &addr); + if (ACPI_FAILURE(status)) { + pr_debug("_ADR returned %d\n", status); + continue; + } + + if (addr < 0 || addr >= PHY_MAX_ADDR) + continue; + + ret = fwnode_mdiobus_register_phy(mdio, child, addr); + if (ret == -ENODEV) + dev_err(&mdio->dev, + "MDIO device at address %lld is missing.\n", + addr); + } + return 0; + } + return -EINVAL; +} +EXPORT_SYMBOL(fwnode_mdiobus_register); + /** * __mdiobus_register - bring up all the PHYs on a given bus and attach them to bus * @bus: target mii_bus diff --git a/include/linux/phy.h b/include/linux/phy.h index 10a66b65a008..67ea4ca6f76f 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -383,6 +383,7 @@ static inline struct mii_bus *mdiobus_alloc(void) return mdiobus_alloc_size(0); } +int fwnode_mdiobus_register(struct mii_bus *mdio, struct fwnode_handle *fwnode); int __mdiobus_register(struct mii_bus *bus, struct module *owner); int __devm_mdiobus_register(struct device *dev, struct mii_bus *bus, struct module *owner); -- 2.17.1