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