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 #if IS_ENABLED(CONFIG_OF_MDIO)
  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 void of_phy_deregister_fixed_link(struct device_node *np);
  33 extern bool of_phy_is_fixed_link(struct device_node *np);
  34
  35 #else /* CONFIG_OF_MDIO */
  36 static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
  37 {
  38         /*
  39          * Fall back to the non-DT function to register a bus.
  40          * This way, we don't have to keep compat bits around in drivers.
  41          */
  42
  43         return mdiobus_register(mdio);
  44 }
  45
  46 static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
  47 {
  48         return NULL;
  49 }
  50
  51 static inline struct phy_device *of_phy_connect(struct net_device *dev,
  52                                                 struct device_node *phy_np,
  53                                                 void (*hndlr)(struct net_device *),
  54                                                 u32 flags, phy_interface_t iface)
  55 {
  56         return NULL;
  57 }
  58
  59 static inline struct phy_device *
  60 of_phy_get_and_connect(struct net_device *dev, struct device_node *np,
  61                        void (*hndlr)(struct net_device *))
  62 {
  63         return NULL;
  64 }
  65
  66 static inline struct phy_device *of_phy_attach(struct net_device *dev,
  67                                                struct device_node *phy_np,
  68                                                u32 flags, phy_interface_t iface)
  69 {
  70         return NULL;
  71 }
  72
  73 static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
  74 {
  75         return NULL;
  76 }
  77
  78 static inline int of_mdio_parse_addr(struct device *dev,
  79                                      const struct device_node *np)
  80 {
  81         return -ENOSYS;
  82 }
  83 static inline int of_phy_register_fixed_link(struct device_node *np)
  84 {
  85         return -ENOSYS;
  86 }
  87 static inline void of_phy_deregister_fixed_link(struct device_node *np)
  88 {
  89 }
  90 static inline bool of_phy_is_fixed_link(struct device_node *np)
  91 {
  92         return false;
  93 }
  94 #endif
  95
  96
  97 #endif /* __LINUX_OF_MDIO_H */