include/linux/of_mdio.h

   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 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 bool of_phy_is_fixed_link(struct device_node *np);
  33
  34 #else /* CONFIG_OF */
  35 static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
  36 {
  37         /*
  38          * Fall back to the non-DT function to register a bus.
  39          * This way, we don't have to keep compat bits around in drivers.
  40          */
  41
  42         return mdiobus_register(mdio);
  43 }
  44
  45 static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
  46 {
  47         return NULL;
  48 }
  49
  50 static inline struct phy_device *of_phy_connect(struct net_device *dev,
  51                                                 struct device_node *phy_np,
  52                                                 void (*hndlr)(struct net_device *),
  53                                                 u32 flags, phy_interface_t iface)
  54 {
  55         return NULL;
  56 }
  57
  58 static inline struct phy_device *
  59 of_phy_get_and_connect(struct net_device *dev, struct device_node *np,
  60                        void (*hndlr)(struct net_device *))
  61 {
  62         return NULL;
  63 }
  64
  65 static inline struct phy_device *of_phy_attach(struct net_device *dev,
  66                                                struct device_node *phy_np,
  67                                                u32 flags, phy_interface_t iface)
  68 {
  69         return NULL;
  70 }
  71
  72 static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
  73 {
  74         return NULL;
  75 }
  76
  77 static inline int of_mdio_parse_addr(struct device *dev,
  78                                      const struct device_node *np)
  79 {
  80         return -ENOSYS;
  81 }
  82 static inline int of_phy_register_fixed_link(struct device_node *np)
  83 {
  84         return -ENOSYS;
  85 }
  86 static inline bool of_phy_is_fixed_link(struct device_node *np)
  87 {
  88         return false;
  89 }
  90 #endif
  91
  92
  93 #endif /* __LINUX_OF_MDIO_H */