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Miller" , Frank Rowand , Heiner Kallweit , Jakub Kicinski , Rob Herring , devicetree@vger.kernel.org Subject: [net-next PATCH v6 07/15] net: mdiobus: Introduce fwnode_mdiobus_register_phy() Date: Thu, 18 Feb 2021 10:56:46 +0530 Message-Id: <20210218052654.28995-8-calvin.johnson@oss.nxp.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210218052654.28995-1-calvin.johnson@oss.nxp.com> References: <20210218052654.28995-1-calvin.johnson@oss.nxp.com> Content-Type: text/plain X-Originating-IP: [14.142.151.118] X-ClientProxiedBy: SG2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:54::15) 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 SG2PR02CA0051.apcprd02.prod.outlook.com (2603:1096:4:54::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3868.27 via Frontend Transport; Thu, 18 Feb 2021 05:28:08 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-HT: Tenant X-MS-Office365-Filtering-Correlation-Id: c38f586f-426f-44c8-223c-08d8d3cdfdbb X-MS-TrafficTypeDiagnostic: AM8PR04MB7730: 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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From the compatible string, identify whether the PHY is c45 and based on this create a PHY device instance which is registered on the mdiobus. uninitialized symbol 'mii_ts' Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Calvin Johnson --- Changes in v6: - Initialize mii_ts to NULL Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None drivers/net/mdio/of_mdio.c | 3 +- drivers/net/phy/mdio_bus.c | 65 ++++++++++++++++++++++++++++++++++++++ include/linux/mdio.h | 2 ++ include/linux/of_mdio.h | 6 +++- 4 files changed, 74 insertions(+), 2 deletions(-) diff --git a/drivers/net/mdio/of_mdio.c b/drivers/net/mdio/of_mdio.c index 612a37970f14..d3f7f104f1ed 100644 --- a/drivers/net/mdio/of_mdio.c +++ b/drivers/net/mdio/of_mdio.c @@ -32,7 +32,7 @@ static int of_get_phy_id(struct device_node *device, u32 *phy_id) return fwnode_get_phy_id(of_fwnode_handle(device), phy_id); } -static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) +struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) { struct of_phandle_args arg; int err; @@ -49,6 +49,7 @@ static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) return register_mii_timestamper(arg.np, arg.args[0]); } +EXPORT_SYMBOL(of_find_mii_timestamper); int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, struct device_node *child, u32 addr) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 823518554079..6158ea6e350b 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 @@ -106,6 +107,70 @@ int mdiobus_unregister_device(struct mdio_device *mdiodev) } EXPORT_SYMBOL(mdiobus_unregister_device); +int fwnode_mdiobus_register_phy(struct mii_bus *bus, + struct fwnode_handle *child, u32 addr) +{ + struct mii_timestamper *mii_ts = NULL; + struct phy_device *phy; + bool is_c45 = false; + u32 phy_id; + int rc; + + if (is_of_node(child)) { + mii_ts = of_find_mii_timestamper(to_of_node(child)); + if (IS_ERR(mii_ts)) + return PTR_ERR(mii_ts); + } + + rc = fwnode_property_match_string(child, "compatible", "ethernet-phy-ieee802.3-c45"); + if (rc >= 0) + is_c45 = true; + + if (is_c45 || fwnode_get_phy_id(child, &phy_id)) + phy = get_phy_device(bus, addr, is_c45); + else + phy = phy_device_create(bus, addr, phy_id, 0, NULL); + if (IS_ERR(phy)) { + if (mii_ts) + unregister_mii_timestamper(mii_ts); + return PTR_ERR(phy); + } + + if (is_acpi_node(child)) { + phy->irq = bus->irq[addr]; + + /* Associate the fwnode with the device structure so it + * can be looked up later. + */ + phy->mdio.dev.fwnode = child; + + /* All data is now stored in the phy struct, so register it */ + rc = phy_device_register(phy); + if (rc) { + phy_device_free(phy); + fwnode_handle_put(phy->mdio.dev.fwnode); + return rc; + } + } else if (is_of_node(child)) { + rc = of_mdiobus_phy_device_register(bus, phy, to_of_node(child), addr); + if (rc) { + if (mii_ts) + unregister_mii_timestamper(mii_ts); + phy_device_free(phy); + return rc; + } + } + + /* phy->mii_ts may already be defined by the PHY driver. A + * mii_timestamper probed via the device tree will still have + * precedence. + */ + if (mii_ts) + phy->mii_ts = mii_ts; + return 0; +} +EXPORT_SYMBOL(fwnode_mdiobus_register_phy); + struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr) { struct mdio_device *mdiodev = bus->mdio_map[addr]; diff --git a/include/linux/mdio.h b/include/linux/mdio.h index ffb787d5ebde..7f4215c069fe 100644 --- a/include/linux/mdio.h +++ b/include/linux/mdio.h @@ -381,6 +381,8 @@ int mdiobus_register_device(struct mdio_device *mdiodev); int mdiobus_unregister_device(struct mdio_device *mdiodev); bool mdiobus_is_registered_device(struct mii_bus *bus, int addr); struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr); +int fwnode_mdiobus_register_phy(struct mii_bus *bus, + struct fwnode_handle *child, u32 addr); /** * mdio_module_driver() - Helper macro for registering mdio drivers diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h index 2b05e7f7c238..e4ee6c4d9431 100644 --- a/include/linux/of_mdio.h +++ b/include/linux/of_mdio.h @@ -31,6 +31,7 @@ struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); int of_phy_register_fixed_link(struct device_node *np); void of_phy_deregister_fixed_link(struct device_node *np); bool of_phy_is_fixed_link(struct device_node *np); +struct mii_timestamper *of_find_mii_timestamper(struct device_node *np); int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, struct device_node *child, u32 addr); @@ -118,7 +119,10 @@ static inline bool of_phy_is_fixed_link(struct device_node *np) { return false; } - +static inline struct mii_timestamper *of_find_mii_timestamper(struct device_node *np) +{ + return NULL; +} static inline int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, struct device_node *child, u32 addr) -- 2.17.1 From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,MSGID_FROM_MTA_HEADER,SPF_HELO_NONE, SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 8B76DC433E0 for ; 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Miller" , linux-arm-kernel@lists.infradead.org, Laurentiu Tudor Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Introduce fwnode_mdiobus_register_phy() to register PHYs on the mdiobus. From the compatible string, identify whether the PHY is c45 and based on this create a PHY device instance which is registered on the mdiobus. uninitialized symbol 'mii_ts' Reported-by: kernel test robot Reported-by: Dan Carpenter Signed-off-by: Calvin Johnson --- Changes in v6: - Initialize mii_ts to NULL Changes in v5: None Changes in v4: None Changes in v3: None Changes in v2: None drivers/net/mdio/of_mdio.c | 3 +- drivers/net/phy/mdio_bus.c | 65 ++++++++++++++++++++++++++++++++++++++ include/linux/mdio.h | 2 ++ include/linux/of_mdio.h | 6 +++- 4 files changed, 74 insertions(+), 2 deletions(-) diff --git a/drivers/net/mdio/of_mdio.c b/drivers/net/mdio/of_mdio.c index 612a37970f14..d3f7f104f1ed 100644 --- a/drivers/net/mdio/of_mdio.c +++ b/drivers/net/mdio/of_mdio.c @@ -32,7 +32,7 @@ static int of_get_phy_id(struct device_node *device, u32 *phy_id) return fwnode_get_phy_id(of_fwnode_handle(device), phy_id); } -static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) +struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) { struct of_phandle_args arg; int err; @@ -49,6 +49,7 @@ static struct mii_timestamper *of_find_mii_timestamper(struct device_node *node) return register_mii_timestamper(arg.np, arg.args[0]); } +EXPORT_SYMBOL(of_find_mii_timestamper); int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, struct device_node *child, u32 addr) diff --git a/drivers/net/phy/mdio_bus.c b/drivers/net/phy/mdio_bus.c index 823518554079..6158ea6e350b 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 @@ -106,6 +107,70 @@ int mdiobus_unregister_device(struct mdio_device *mdiodev) } EXPORT_SYMBOL(mdiobus_unregister_device); +int fwnode_mdiobus_register_phy(struct mii_bus *bus, + struct fwnode_handle *child, u32 addr) +{ + struct mii_timestamper *mii_ts = NULL; + struct phy_device *phy; + bool is_c45 = false; + u32 phy_id; + int rc; + + if (is_of_node(child)) { + mii_ts = of_find_mii_timestamper(to_of_node(child)); + if (IS_ERR(mii_ts)) + return PTR_ERR(mii_ts); + } + + rc = fwnode_property_match_string(child, "compatible", "ethernet-phy-ieee802.3-c45"); + if (rc >= 0) + is_c45 = true; + + if (is_c45 || fwnode_get_phy_id(child, &phy_id)) + phy = get_phy_device(bus, addr, is_c45); + else + phy = phy_device_create(bus, addr, phy_id, 0, NULL); + if (IS_ERR(phy)) { + if (mii_ts) + unregister_mii_timestamper(mii_ts); + return PTR_ERR(phy); + } + + if (is_acpi_node(child)) { + phy->irq = bus->irq[addr]; + + /* Associate the fwnode with the device structure so it + * can be looked up later. + */ + phy->mdio.dev.fwnode = child; + + /* All data is now stored in the phy struct, so register it */ + rc = phy_device_register(phy); + if (rc) { + phy_device_free(phy); + fwnode_handle_put(phy->mdio.dev.fwnode); + return rc; + } + } else if (is_of_node(child)) { + rc = of_mdiobus_phy_device_register(bus, phy, to_of_node(child), addr); + if (rc) { + if (mii_ts) + unregister_mii_timestamper(mii_ts); + phy_device_free(phy); + return rc; + } + } + + /* phy->mii_ts may already be defined by the PHY driver. A + * mii_timestamper probed via the device tree will still have + * precedence. + */ + if (mii_ts) + phy->mii_ts = mii_ts; + return 0; +} +EXPORT_SYMBOL(fwnode_mdiobus_register_phy); + struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr) { struct mdio_device *mdiodev = bus->mdio_map[addr]; diff --git a/include/linux/mdio.h b/include/linux/mdio.h index ffb787d5ebde..7f4215c069fe 100644 --- a/include/linux/mdio.h +++ b/include/linux/mdio.h @@ -381,6 +381,8 @@ int mdiobus_register_device(struct mdio_device *mdiodev); int mdiobus_unregister_device(struct mdio_device *mdiodev); bool mdiobus_is_registered_device(struct mii_bus *bus, int addr); struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr); +int fwnode_mdiobus_register_phy(struct mii_bus *bus, + struct fwnode_handle *child, u32 addr); /** * mdio_module_driver() - Helper macro for registering mdio drivers diff --git a/include/linux/of_mdio.h b/include/linux/of_mdio.h index 2b05e7f7c238..e4ee6c4d9431 100644 --- a/include/linux/of_mdio.h +++ b/include/linux/of_mdio.h @@ -31,6 +31,7 @@ struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); int of_phy_register_fixed_link(struct device_node *np); void of_phy_deregister_fixed_link(struct device_node *np); bool of_phy_is_fixed_link(struct device_node *np); +struct mii_timestamper *of_find_mii_timestamper(struct device_node *np); int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, struct device_node *child, u32 addr); @@ -118,7 +119,10 @@ static inline bool of_phy_is_fixed_link(struct device_node *np) { return false; } - +static inline struct mii_timestamper *of_find_mii_timestamper(struct device_node *np) +{ + return NULL; +} static inline int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, struct device_node *child, u32 addr) -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel