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 #ifdef CONFIG_OF 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 struct phy_device *of_phy_attach(struct net_device *dev, 23 struct device_node *phy_np, u32 flags, 24 phy_interface_t iface); 25 26 extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); 27 28 extern void of_mdiobus_link_phydev(struct mii_bus *mdio, 29 struct phy_device *phydev); 30 31 #else /* CONFIG_OF */ 32 static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) 33 { 34 /* 35 * Fall back to the non-DT function to register a bus. 36 * This way, we don't have to keep compat bits around in drivers. 37 */ 38 39 return mdiobus_register(mdio); 40 } 41 42 static inline struct phy_device *of_phy_find_device(struct device_node *phy_np) 43 { 44 return NULL; 45 } 46 47 static inline struct phy_device *of_phy_connect(struct net_device *dev, 48 struct device_node *phy_np, 49 void (*hndlr)(struct net_device *), 50 u32 flags, phy_interface_t iface) 51 { 52 return NULL; 53 } 54 55 static inline struct phy_device *of_phy_attach(struct net_device *dev, 56 struct device_node *phy_np, 57 u32 flags, phy_interface_t iface) 58 { 59 return NULL; 60 } 61 62 static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np) 63 { 64 return NULL; 65 } 66 67 static inline void of_mdiobus_link_phydev(struct mii_bus *mdio, 68 struct phy_device *phydev) 69 { 70 } 71 #endif /* CONFIG_OF */ 72 73 #if defined(CONFIG_OF) && defined(CONFIG_FIXED_PHY) 74 extern int of_phy_register_fixed_link(struct device_node *np); 75 extern bool of_phy_is_fixed_link(struct device_node *np); 76 #else 77 static inline int of_phy_register_fixed_link(struct device_node *np) 78 { 79 return -ENOSYS; 80 } 81 static inline bool of_phy_is_fixed_link(struct device_node *np) 82 { 83 return false; 84 } 85 #endif 86 87 88 #endif /* __LINUX_OF_MDIO_H */ 89