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
16extern int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np);
17extern struct phy_device *of_phy_find_device(struct device_node *phy_np);
18extern 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);
22struct phy_device *of_phy_attach(struct net_device *dev,
23				 struct device_node *phy_np, u32 flags,
24				 phy_interface_t iface);
25
26extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
27extern int of_mdio_parse_addr(struct device *dev, const struct device_node *np);
28
29#else /* CONFIG_OF */
30static 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
40static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
41{
42	return NULL;
43}
44
45static 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
53static 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
60static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
61{
62	return NULL;
63}
64
65static 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)
73extern int of_phy_register_fixed_link(struct device_node *np);
74extern bool of_phy_is_fixed_link(struct device_node *np);
75#else
76static inline int of_phy_register_fixed_link(struct device_node *np)
77{
78	return -ENOSYS;
79}
80static 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 */
88