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 */
88
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