1 /* 2 * OF helpers for the MDIO (Ethernet PHY) API 3 * 4 * Copyright (c) 2009 Secret Lab Technologies, Ltd. 5 * 6 * This file is released under the GPLv2 7 */ 8 9 #ifndef __LINUX_OF_MDIO_H 10 #define __LINUX_OF_MDIO_H 11 12 #include <linux/phy.h> 13 #include <linux/of.h> 14 15 #if IS_ENABLED(CONFIG_OF_MDIO) 16 extern int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np); 17 extern struct phy_device *of_phy_find_device(struct device_node *phy_np); 18 extern struct phy_device *of_phy_connect(struct net_device *dev, 19 struct device_node *phy_np, 20 void (*hndlr)(struct net_device *), 21 u32 flags, phy_interface_t iface); 22 extern struct phy_device * 23 of_phy_get_and_connect(struct net_device *dev, struct device_node *np, 24 void (*hndlr)(struct net_device *)); 25 struct phy_device *of_phy_attach(struct net_device *dev, 26 struct device_node *phy_np, u32 flags, 27 phy_interface_t iface); 28 29 extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); 30 extern int of_mdio_parse_addr(struct device *dev, const struct device_node *np); 31 extern int of_phy_register_fixed_link(struct device_node *np); 32 extern void of_phy_deregister_fixed_link(struct device_node *np); 33 extern bool of_phy_is_fixed_link(struct device_node *np); 34 35 #else /* CONFIG_OF_MDIO */ 36 static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) 37 { 38 /* 39 * Fall back to the non-DT function to register a bus. 40 * This way, we don't have to keep compat bits around in drivers. 41 */ 42 43 return mdiobus_register(mdio); 44 } 45 46 static inline struct phy_device *of_phy_find_device(struct device_node *phy_np) 47 { 48 return NULL; 49 } 50 51 static inline struct phy_device *of_phy_connect(struct net_device *dev, 52 struct device_node *phy_np, 53 void (*hndlr)(struct net_device *), 54 u32 flags, phy_interface_t iface) 55 { 56 return NULL; 57 } 58 59 static inline struct phy_device * 60 of_phy_get_and_connect(struct net_device *dev, struct device_node *np, 61 void (*hndlr)(struct net_device *)) 62 { 63 return NULL; 64 } 65 66 static inline struct phy_device *of_phy_attach(struct net_device *dev, 67 struct device_node *phy_np, 68 u32 flags, phy_interface_t iface) 69 { 70 return NULL; 71 } 72 73 static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np) 74 { 75 return NULL; 76 } 77 78 static inline int of_mdio_parse_addr(struct device *dev, 79 const struct device_node *np) 80 { 81 return -ENOSYS; 82 } 83 static inline int of_phy_register_fixed_link(struct device_node *np) 84 { 85 return -ENOSYS; 86 } 87 static inline void of_phy_deregister_fixed_link(struct device_node *np) 88 { 89 } 90 static inline bool of_phy_is_fixed_link(struct device_node *np) 91 { 92 return false; 93 } 94 #endif 95 96 97 #endif /* __LINUX_OF_MDIO_H */ 98