86f6cf4127
Add a function to walk the list of subnodes of a mdio bus and look for a node that matches the phy's address with its 'reg' property. If found, set the of_node pointer for the phy. This allows auto-probed pyh devices to be augmented by information passed in via DT. Signed-off-by: Daniel Mack <zonque@gmail.com> Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
88 lines
2.2 KiB
C
88 lines
2.2 KiB
C
/*
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* OF helpers for the MDIO (Ethernet PHY) API
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*
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* Copyright (c) 2009 Secret Lab Technologies, Ltd.
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*
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* This file is released under the GPLv2
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*/
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#ifndef __LINUX_OF_MDIO_H
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#define __LINUX_OF_MDIO_H
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#include <linux/phy.h>
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#include <linux/of.h>
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#ifdef CONFIG_OF
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extern int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np);
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extern struct phy_device *of_phy_find_device(struct device_node *phy_np);
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extern struct phy_device *of_phy_connect(struct net_device *dev,
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struct device_node *phy_np,
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void (*hndlr)(struct net_device *),
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u32 flags, phy_interface_t iface);
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struct phy_device *of_phy_attach(struct net_device *dev,
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struct device_node *phy_np, u32 flags,
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phy_interface_t iface);
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extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
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extern void of_mdiobus_link_phydev(struct mii_bus *mdio,
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struct phy_device *phydev);
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#else /* CONFIG_OF */
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static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
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{
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/*
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* Fall back to the non-DT function to register a bus.
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* This way, we don't have to keep compat bits around in drivers.
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*/
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return mdiobus_register(mdio);
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}
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static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
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{
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return NULL;
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}
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static inline struct phy_device *of_phy_connect(struct net_device *dev,
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struct device_node *phy_np,
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void (*hndlr)(struct net_device *),
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u32 flags, phy_interface_t iface)
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{
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return NULL;
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}
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static inline struct phy_device *of_phy_attach(struct net_device *dev,
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struct device_node *phy_np,
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u32 flags, phy_interface_t iface)
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{
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return NULL;
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}
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static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
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{
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return NULL;
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}
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static inline void of_mdiobus_link_phydev(struct mii_bus *mdio,
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struct phy_device *phydev)
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{
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}
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#endif /* CONFIG_OF */
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#if defined(CONFIG_OF) && defined(CONFIG_FIXED_PHY)
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extern int of_phy_register_fixed_link(struct device_node *np);
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extern bool of_phy_is_fixed_link(struct device_node *np);
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#else
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static inline int of_phy_register_fixed_link(struct device_node *np)
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{
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return -ENOSYS;
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}
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static inline bool of_phy_is_fixed_link(struct device_node *np)
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{
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return false;
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}
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#endif
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#endif /* __LINUX_OF_MDIO_H */
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