Commit | Line | Data |
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8bc487d1 GL |
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 | ||
e6e14f63 | 15 | #if IS_ENABLED(CONFIG_OF_MDIO) |
8bc487d1 GL |
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); | |
b7862412 DL |
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 *)); | |
7614aba6 AF |
25 | struct phy_device *of_phy_attach(struct net_device *dev, |
26 | struct device_node *phy_np, u32 flags, | |
27 | phy_interface_t iface); | |
8bc487d1 | 28 | |
25106022 | 29 | extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); |
a5e4bd99 | 30 | extern int of_phy_register_fixed_link(struct device_node *np); |
3f65047c | 31 | extern void of_phy_deregister_fixed_link(struct device_node *np); |
a5e4bd99 | 32 | extern bool of_phy_is_fixed_link(struct device_node *np); |
25106022 | 33 | |
4798a714 JM |
34 | |
35 | static inline int of_mdio_parse_addr(struct device *dev, | |
36 | const struct device_node *np) | |
37 | { | |
38 | u32 addr; | |
39 | int ret; | |
40 | ||
41 | ret = of_property_read_u32(np, "reg", &addr); | |
42 | if (ret < 0) { | |
43 | dev_err(dev, "%s has invalid PHY address\n", np->full_name); | |
44 | return ret; | |
45 | } | |
46 | ||
47 | /* A PHY must have a reg property in the range [0-31] */ | |
48 | if (addr >= PHY_MAX_ADDR) { | |
49 | dev_err(dev, "%s PHY address %i is too large\n", | |
50 | np->full_name, addr); | |
51 | return -EINVAL; | |
52 | } | |
53 | ||
54 | return addr; | |
55 | } | |
56 | ||
e6e14f63 | 57 | #else /* CONFIG_OF_MDIO */ |
2a5cf801 | 58 | static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) |
f9dc9ac5 | 59 | { |
23a456f0 DM |
60 | /* |
61 | * Fall back to the non-DT function to register a bus. | |
62 | * This way, we don't have to keep compat bits around in drivers. | |
63 | */ | |
64 | ||
65 | return mdiobus_register(mdio); | |
f9dc9ac5 SK |
66 | } |
67 | ||
2a5cf801 | 68 | static inline struct phy_device *of_phy_find_device(struct device_node *phy_np) |
f9dc9ac5 SK |
69 | { |
70 | return NULL; | |
71 | } | |
72 | ||
2a5cf801 MB |
73 | static inline struct phy_device *of_phy_connect(struct net_device *dev, |
74 | struct device_node *phy_np, | |
75 | void (*hndlr)(struct net_device *), | |
76 | u32 flags, phy_interface_t iface) | |
f9dc9ac5 SK |
77 | { |
78 | return NULL; | |
79 | } | |
80 | ||
b7862412 DL |
81 | static inline struct phy_device * |
82 | of_phy_get_and_connect(struct net_device *dev, struct device_node *np, | |
83 | void (*hndlr)(struct net_device *)) | |
84 | { | |
85 | return NULL; | |
86 | } | |
87 | ||
7614aba6 AF |
88 | static inline struct phy_device *of_phy_attach(struct net_device *dev, |
89 | struct device_node *phy_np, | |
90 | u32 flags, phy_interface_t iface) | |
91 | { | |
92 | return NULL; | |
93 | } | |
94 | ||
2a5cf801 | 95 | static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np) |
f9dc9ac5 SK |
96 | { |
97 | return NULL; | |
98 | } | |
33d67377 FF |
99 | |
100 | static inline int of_mdio_parse_addr(struct device *dev, | |
101 | const struct device_node *np) | |
102 | { | |
103 | return -ENOSYS; | |
104 | } | |
3be2a49e TP |
105 | static inline int of_phy_register_fixed_link(struct device_node *np) |
106 | { | |
107 | return -ENOSYS; | |
108 | } | |
3f65047c JH |
109 | static inline void of_phy_deregister_fixed_link(struct device_node *np) |
110 | { | |
111 | } | |
3be2a49e TP |
112 | static inline bool of_phy_is_fixed_link(struct device_node *np) |
113 | { | |
114 | return false; | |
115 | } | |
116 | #endif | |
117 | ||
118 | ||
8bc487d1 | 119 | #endif /* __LINUX_OF_MDIO_H */ |