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git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/blob - include/linux/of_mdio.h
1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * OF helpers for the MDIO (Ethernet PHY) API
5 * Copyright (c) 2009 Secret Lab Technologies, Ltd.
8 #ifndef __LINUX_OF_MDIO_H
9 #define __LINUX_OF_MDIO_H
11 #include <linux/phy.h>
14 #if IS_ENABLED(CONFIG_OF_MDIO)
15 extern bool of_mdiobus_child_is_phy(struct device_node
*child
);
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 extern struct phy_device
*
23 of_phy_get_and_connect(struct net_device
*dev
, struct device_node
*np
,
24 void (*hndlr
)(struct net_device
*));
25 struct phy_device
*of_phy_attach(struct net_device
*dev
,
26 struct device_node
*phy_np
, u32 flags
,
27 phy_interface_t iface
);
29 extern struct mii_bus
*of_mdio_find_bus(struct device_node
*mdio_np
);
30 extern int of_phy_register_fixed_link(struct device_node
*np
);
31 extern void of_phy_deregister_fixed_link(struct device_node
*np
);
32 extern bool of_phy_is_fixed_link(struct device_node
*np
);
35 static inline int of_mdio_parse_addr(struct device
*dev
,
36 const struct device_node
*np
)
41 ret
= of_property_read_u32(np
, "reg", &addr
);
43 dev_err(dev
, "%s has invalid PHY address\n", np
->full_name
);
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",
57 #else /* CONFIG_OF_MDIO */
58 static inline bool of_mdiobus_child_is_phy(struct device_node
*child
)
63 static inline int of_mdiobus_register(struct mii_bus
*mdio
, struct device_node
*np
)
66 * Fall back to the non-DT function to register a bus.
67 * This way, we don't have to keep compat bits around in drivers.
70 return mdiobus_register(mdio
);
73 static inline struct phy_device
*of_phy_find_device(struct device_node
*phy_np
)
78 static inline struct phy_device
*of_phy_connect(struct net_device
*dev
,
79 struct device_node
*phy_np
,
80 void (*hndlr
)(struct net_device
*),
81 u32 flags
, phy_interface_t iface
)
86 static inline struct phy_device
*
87 of_phy_get_and_connect(struct net_device
*dev
, struct device_node
*np
,
88 void (*hndlr
)(struct net_device
*))
93 static inline struct phy_device
*of_phy_attach(struct net_device
*dev
,
94 struct device_node
*phy_np
,
95 u32 flags
, phy_interface_t iface
)
100 static inline struct mii_bus
*of_mdio_find_bus(struct device_node
*mdio_np
)
105 static inline int of_mdio_parse_addr(struct device
*dev
,
106 const struct device_node
*np
)
110 static inline int of_phy_register_fixed_link(struct device_node
*np
)
114 static inline void of_phy_deregister_fixed_link(struct device_node
*np
)
117 static inline bool of_phy_is_fixed_link(struct device_node
*np
)
124 #endif /* __LINUX_OF_MDIO_H */