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