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gerrit-public.fairphone.software / kernel / msm-4.19 / 90c42090c0da3a77057ba777e2d3f8d16e55aabc / . / include / linux / of_mdio.h
blob: f5db93bcd069c8e8f726a8b7c18f70a373667325 [file] [log] [blame]
Grant Likely8bc487d2009-04-25 12:52:56 +0000[diff] [blame]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
Florian Fainellie6e14f62017-03-23 10:01:17 -0700[diff] [blame]15#if IS_ENABLED(CONFIG_OF_MDIO)
Grant Likely8bc487d2009-04-25 12:52:56 +0000[diff] [blame]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);
Dongpo Lib7862412016-07-15 16:26:34 +0800[diff] [blame]22extern struct phy_device *
23of_phy_get_and_connect(struct net_device *dev, struct device_node *np,
24 void (*hndlr)(struct net_device *));
Andy Fleming7614aba2014-01-10 14:28:11 +0800[diff] [blame]25struct phy_device *of_phy_attach(struct net_device *dev,
26 struct device_node *phy_np, u32 flags,
27 phy_interface_t iface);
Grant Likely8bc487d2009-04-25 12:52:56 +0000[diff] [blame]28
David Daney25106022012-05-02 15:16:37 +0000[diff] [blame]29extern struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
Arnd Bergmanna5e4bd92016-06-24 11:24:08 +0200[diff] [blame]30extern int of_phy_register_fixed_link(struct device_node *np);
Johan Hovold3f650472016-11-28 19:24:55 +0100[diff] [blame]31extern void of_phy_deregister_fixed_link(struct device_node *np);
Arnd Bergmanna5e4bd92016-06-24 11:24:08 +0200[diff] [blame]32extern bool of_phy_is_fixed_link(struct device_node *np);
David Daney25106022012-05-02 15:16:37 +0000[diff] [blame]33
Jon Mason4798a712017-06-13 10:56:08 -0400[diff] [blame]34
35static 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
Florian Fainellie6e14f62017-03-23 10:01:17 -0700[diff] [blame]57#else /* CONFIG_OF_MDIO */
Mark Brown2a5cf802012-10-09 18:33:38 +0000[diff] [blame]58static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
Srinivas Kandagatlaf9dc9ac2012-08-24 01:58:59 +0000[diff] [blame]59{
Daniel Mack23a456f2014-05-06 18:52:16 +0200[diff] [blame]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);
Srinivas Kandagatlaf9dc9ac2012-08-24 01:58:59 +0000[diff] [blame]66}
67
Mark Brown2a5cf802012-10-09 18:33:38 +0000[diff] [blame]68static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
Srinivas Kandagatlaf9dc9ac2012-08-24 01:58:59 +0000[diff] [blame]69{
70 return NULL;
71}
72
Mark Brown2a5cf802012-10-09 18:33:38 +0000[diff] [blame]73static 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)
Srinivas Kandagatlaf9dc9ac2012-08-24 01:58:59 +0000[diff] [blame]77{
78 return NULL;
79}
80
Dongpo Lib7862412016-07-15 16:26:34 +0800[diff] [blame]81static inline struct phy_device *
82of_phy_get_and_connect(struct net_device *dev, struct device_node *np,
83 void (*hndlr)(struct net_device *))
84{
85 return NULL;
86}
87
Andy Fleming7614aba2014-01-10 14:28:11 +0800[diff] [blame]88static 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
Mark Brown2a5cf802012-10-09 18:33:38 +0000[diff] [blame]95static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
Srinivas Kandagatlaf9dc9ac2012-08-24 01:58:59 +0000[diff] [blame]96{
97 return NULL;
98}
Florian Fainelli33d67372015-03-10 16:57:11 -0700[diff] [blame]99
100static inline int of_mdio_parse_addr(struct device *dev,
101 const struct device_node *np)
102{
103 return -ENOSYS;
104}
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200[diff] [blame]105static inline int of_phy_register_fixed_link(struct device_node *np)
106{
107 return -ENOSYS;
108}
Johan Hovold3f650472016-11-28 19:24:55 +0100[diff] [blame]109static inline void of_phy_deregister_fixed_link(struct device_node *np)
110{
111}
Thomas Petazzoni3be2a492014-05-16 16:14:05 +0200[diff] [blame]112static inline bool of_phy_is_fixed_link(struct device_node *np)
113{
114 return false;
115}
116#endif
117
118
Grant Likely8bc487d2009-04-25 12:52:56 +0000[diff] [blame]119#endif /* __LINUX_OF_MDIO_H */