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
  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 */