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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 , Saravana Kannan , Randy Dunlap Cc: linux-arm-kernel@lists.infradead.org, Diana Madalina Craciun , linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org, linux.cj@gmail.com, netdev@vger.kernel.org, Laurentiu Tudor , Calvin Johnson , "David S. Miller" , Heiner Kallweit , Jakub Kicinski Subject: [net-next PATCH v7 02/16] net: phy: Introduce fwnode_mdio_find_device() Date: Thu, 11 Mar 2021 11:49:57 +0530 Message-Id: <20210311062011.8054-3-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210311062011.8054-1-calvin.johnson@oss.nxp.com> References: <20210311062011.8054-1-calvin.johnson@oss.nxp.com> X-Originating-IP: [14.142.151.118] X-ClientProxiedBy: HKAPR03CA0026.apcprd03.prod.outlook.com (2603:1096:203:c9::13) 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 HKAPR03CA0026.apcprd03.prod.outlook.com (2603:1096:203:c9::13) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3955.9 via Frontend Transport; Thu, 11 Mar 2021 06:20:52 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: 50792285-bfa6-4eeb-d6da-08d8e455d72d X-MS-TrafficTypeDiagnostic: AM0PR04MB5473: X-MS-Exchange-SharedMailbox-RoutingAgent-Processed: True X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:6108; 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Refactor of_mdio_find_device() to use fwnode_mdio_find_device(). Signed-off-by: Calvin Johnson --- Changes in v7: - correct fwnode_mdio_find_device() description Changes in v6: - fix warning for function parameter of fwnode_mdio_find_device() Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None drivers/net/mdio/of_mdio.c | 11 +---------- drivers/net/phy/phy_device.c | 23 +++++++++++++++++++++++ include/linux/phy.h | 6 ++++++ 3 files changed, 30 insertions(+), 10 deletions(-) diff --git a/drivers/net/mdio/of_mdio.c b/drivers/net/mdio/of_mdio.c index ea9d5855fb52..d5e0970b2561 100644 --- a/drivers/net/mdio/of_mdio.c +++ b/drivers/net/mdio/of_mdio.c @@ -347,16 +347,7 @@ EXPORT_SYMBOL(of_mdiobus_register); */ struct mdio_device *of_mdio_find_device(struct device_node *np) { - struct device *d; - - if (!np) - return NULL; - - d = bus_find_device_by_of_node(&mdio_bus_type, np); - if (!d) - return NULL; - - return to_mdio_device(d); + return fwnode_mdio_find_device(of_fwnode_handle(np)); } EXPORT_SYMBOL(of_mdio_find_device); diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index cc38e326405a..daabb17bba00 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -2819,6 +2819,29 @@ static bool phy_drv_supports_irq(struct phy_driver *phydrv) return phydrv->config_intr && phydrv->handle_interrupt; } +/** + * fwnode_mdio_find_device - Given a fwnode, find the mdio_device + * @fwnode: pointer to the mdio_device's fwnode + * + * If successful, returns a pointer to the mdio_device with the embedded + * struct device refcount incremented by one, or NULL on failure. + * The caller should call put_device() on the mdio_device after its use. + */ +struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode) +{ + struct device *d; + + if (!fwnode) + return NULL; + + d = bus_find_device_by_fwnode(&mdio_bus_type, fwnode); + if (!d) + return NULL; + + return to_mdio_device(d); +} +EXPORT_SYMBOL(fwnode_mdio_find_device); + /** * phy_probe - probe and init a PHY device * @dev: device to probe and init diff --git a/include/linux/phy.h b/include/linux/phy.h index 1a12e4436b5b..f5eb1e3981a1 100644 --- a/include/linux/phy.h +++ b/include/linux/phy.h @@ -1366,11 +1366,17 @@ struct phy_device *phy_device_create(struct mii_bus *bus, int addr, u32 phy_id, bool is_c45, struct phy_c45_device_ids *c45_ids); #if IS_ENABLED(CONFIG_PHYLIB) +struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode); struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45); int phy_device_register(struct phy_device *phy); void phy_device_free(struct phy_device *phydev); #else static inline +struct mdio_device *fwnode_mdio_find_device(struct fwnode_handle *fwnode) +{ + return 0; +} +static inline struct phy_device *get_phy_device(struct mii_bus *bus, int addr, bool is_c45) { return NULL;