Commit | Line | Data |
---|---|---|
55716d26 | 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
8bc487d1 GL |
2 | /* |
3 | * OF helpers for the MDIO (Ethernet PHY) API | |
4 | * | |
5 | * Copyright (c) 2009 Secret Lab Technologies, Ltd. | |
8bc487d1 GL |
6 | */ |
7 | ||
8 | #ifndef __LINUX_OF_MDIO_H | |
9 | #define __LINUX_OF_MDIO_H | |
10 | ||
14eeb6e0 | 11 | #include <linux/device.h> |
8bc487d1 GL |
12 | #include <linux/phy.h> |
13 | #include <linux/of.h> | |
14 | ||
e6e14f63 | 15 | #if IS_ENABLED(CONFIG_OF_MDIO) |
a0bd96f5 | 16 | bool of_mdiobus_child_is_phy(struct device_node *child); |
99669259 MB |
17 | int __of_mdiobus_register(struct mii_bus *mdio, struct device_node *np, |
18 | struct module *owner); | |
19 | ||
20 | static inline int of_mdiobus_register(struct mii_bus *mdio, | |
21 | struct device_node *np) | |
22 | { | |
23 | return __of_mdiobus_register(mdio, np, THIS_MODULE); | |
24 | } | |
25 | ||
26 | int __devm_of_mdiobus_register(struct device *dev, struct mii_bus *mdio, | |
27 | struct device_node *np, struct module *owner); | |
28 | ||
29 | static inline int devm_of_mdiobus_register(struct device *dev, | |
30 | struct mii_bus *mdio, | |
31 | struct device_node *np) | |
32 | { | |
33 | return __devm_of_mdiobus_register(dev, mdio, np, THIS_MODULE); | |
34 | } | |
35 | ||
b5b6775d | 36 | struct mdio_device *of_mdio_find_device(struct device_node *np); |
a0bd96f5 BG |
37 | struct phy_device *of_phy_find_device(struct device_node *phy_np); |
38 | struct phy_device * | |
39 | of_phy_connect(struct net_device *dev, struct device_node *phy_np, | |
40 | void (*hndlr)(struct net_device *), u32 flags, | |
41 | phy_interface_t iface); | |
42 | struct phy_device * | |
b7862412 DL |
43 | of_phy_get_and_connect(struct net_device *dev, struct device_node *np, |
44 | void (*hndlr)(struct net_device *)); | |
8bc487d1 | 45 | |
a0bd96f5 BG |
46 | struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np); |
47 | int of_phy_register_fixed_link(struct device_node *np); | |
48 | void of_phy_deregister_fixed_link(struct device_node *np); | |
49 | bool of_phy_is_fixed_link(struct device_node *np); | |
50 | int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy, | |
51 | struct device_node *child, u32 addr); | |
4798a714 JM |
52 | |
53 | static inline int of_mdio_parse_addr(struct device *dev, | |
54 | const struct device_node *np) | |
55 | { | |
56 | u32 addr; | |
57 | int ret; | |
58 | ||
59 | ret = of_property_read_u32(np, "reg", &addr); | |
60 | if (ret < 0) { | |
61 | dev_err(dev, "%s has invalid PHY address\n", np->full_name); | |
62 | return ret; | |
63 | } | |
64 | ||
65 | /* A PHY must have a reg property in the range [0-31] */ | |
66 | if (addr >= PHY_MAX_ADDR) { | |
67 | dev_err(dev, "%s PHY address %i is too large\n", | |
68 | np->full_name, addr); | |
69 | return -EINVAL; | |
70 | } | |
71 | ||
72 | return addr; | |
73 | } | |
74 | ||
e6e14f63 | 75 | #else /* CONFIG_OF_MDIO */ |
7df2281a | 76 | static inline bool of_mdiobus_child_is_phy(struct device_node *child) |
0aa4d016 AT |
77 | { |
78 | return false; | |
79 | } | |
80 | ||
2a5cf801 | 81 | static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np) |
f9dc9ac5 | 82 | { |
23a456f0 DM |
83 | /* |
84 | * Fall back to the non-DT function to register a bus. | |
85 | * This way, we don't have to keep compat bits around in drivers. | |
86 | */ | |
87 | ||
88 | return mdiobus_register(mdio); | |
f9dc9ac5 SK |
89 | } |
90 | ||
86544c3d VO |
91 | static inline int devm_of_mdiobus_register(struct device *dev, |
92 | struct mii_bus *mdio, | |
93 | struct device_node *np) | |
94 | { | |
95 | return devm_mdiobus_register(dev, mdio); | |
96 | } | |
97 | ||
b5b6775d RK |
98 | static inline struct mdio_device *of_mdio_find_device(struct device_node *np) |
99 | { | |
100 | return NULL; | |
101 | } | |
102 | ||
2a5cf801 | 103 | static inline struct phy_device *of_phy_find_device(struct device_node *phy_np) |
f9dc9ac5 SK |
104 | { |
105 | return NULL; | |
106 | } | |
107 | ||
2a5cf801 MB |
108 | static inline struct phy_device *of_phy_connect(struct net_device *dev, |
109 | struct device_node *phy_np, | |
110 | void (*hndlr)(struct net_device *), | |
111 | u32 flags, phy_interface_t iface) | |
f9dc9ac5 SK |
112 | { |
113 | return NULL; | |
114 | } | |
115 | ||
b7862412 DL |
116 | static inline struct phy_device * |
117 | of_phy_get_and_connect(struct net_device *dev, struct device_node *np, | |
118 | void (*hndlr)(struct net_device *)) | |
119 | { | |
120 | return NULL; | |
121 | } | |
122 | ||
2a5cf801 | 123 | static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np) |
f9dc9ac5 SK |
124 | { |
125 | return NULL; | |
126 | } | |
33d67377 FF |
127 | |
128 | static inline int of_mdio_parse_addr(struct device *dev, | |
129 | const struct device_node *np) | |
130 | { | |
131 | return -ENOSYS; | |
132 | } | |
3be2a49e TP |
133 | static inline int of_phy_register_fixed_link(struct device_node *np) |
134 | { | |
135 | return -ENOSYS; | |
136 | } | |
3f65047c JH |
137 | static inline void of_phy_deregister_fixed_link(struct device_node *np) |
138 | { | |
139 | } | |
3be2a49e TP |
140 | static inline bool of_phy_is_fixed_link(struct device_node *np) |
141 | { | |
142 | return false; | |
143 | } | |
5972157c OR |
144 | |
145 | static inline int of_mdiobus_phy_device_register(struct mii_bus *mdio, | |
146 | struct phy_device *phy, | |
147 | struct device_node *child, u32 addr) | |
148 | { | |
149 | return -ENOSYS; | |
150 | } | |
3be2a49e TP |
151 | #endif |
152 | ||
153 | ||
8bc487d1 | 154 | #endif /* __LINUX_OF_MDIO_H */ |