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0334ff98b9
This reverts commit d04dac7fae.
It removes of_mdiobus_register() from the symbol list, which Android
drivers are using, and they don't care about module owners as kernel
modules are not allowed to be removed on Android systems, so revert it
to preserve the ABI.
Bug: 161946584
Change-Id: I5bb5d4261bab07c3a4eeb7a41ae09d4a41d56e7e
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
155 lines
3.9 KiB
C
155 lines
3.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* OF helpers for the MDIO (Ethernet PHY) API
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*
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* Copyright (c) 2009 Secret Lab Technologies, Ltd.
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*/
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#ifndef __LINUX_OF_MDIO_H
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#define __LINUX_OF_MDIO_H
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#include <linux/device.h>
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#include <linux/phy.h>
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#include <linux/of.h>
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#if IS_ENABLED(CONFIG_OF_MDIO)
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bool of_mdiobus_child_is_phy(struct device_node *child);
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int __of_mdiobus_register(struct mii_bus *mdio, struct device_node *np,
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struct module *owner);
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static inline int of_mdiobus_register(struct mii_bus *mdio,
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struct device_node *np)
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{
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return __of_mdiobus_register(mdio, np, THIS_MODULE);
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}
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int __devm_of_mdiobus_register(struct device *dev, struct mii_bus *mdio,
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struct device_node *np, struct module *owner);
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static inline int devm_of_mdiobus_register(struct device *dev,
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struct mii_bus *mdio,
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struct device_node *np)
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{
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return __devm_of_mdiobus_register(dev, mdio, np, THIS_MODULE);
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}
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struct mdio_device *of_mdio_find_device(struct device_node *np);
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struct phy_device *of_phy_find_device(struct device_node *phy_np);
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struct phy_device *
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of_phy_connect(struct net_device *dev, struct device_node *phy_np,
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void (*hndlr)(struct net_device *), u32 flags,
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phy_interface_t iface);
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struct phy_device *
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of_phy_get_and_connect(struct net_device *dev, struct device_node *np,
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void (*hndlr)(struct net_device *));
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struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np);
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int of_phy_register_fixed_link(struct device_node *np);
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void of_phy_deregister_fixed_link(struct device_node *np);
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bool of_phy_is_fixed_link(struct device_node *np);
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int of_mdiobus_phy_device_register(struct mii_bus *mdio, struct phy_device *phy,
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struct device_node *child, u32 addr);
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static inline int of_mdio_parse_addr(struct device *dev,
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const struct device_node *np)
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{
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u32 addr;
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int ret;
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ret = of_property_read_u32(np, "reg", &addr);
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if (ret < 0) {
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dev_err(dev, "%s has invalid PHY address\n", np->full_name);
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return ret;
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}
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/* A PHY must have a reg property in the range [0-31] */
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if (addr >= PHY_MAX_ADDR) {
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dev_err(dev, "%s PHY address %i is too large\n",
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np->full_name, addr);
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return -EINVAL;
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}
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return addr;
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}
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#else /* CONFIG_OF_MDIO */
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static inline bool of_mdiobus_child_is_phy(struct device_node *child)
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{
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return false;
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}
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static inline int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
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{
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/*
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* Fall back to the non-DT function to register a bus.
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* This way, we don't have to keep compat bits around in drivers.
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*/
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return mdiobus_register(mdio);
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}
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static inline int devm_of_mdiobus_register(struct device *dev,
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struct mii_bus *mdio,
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struct device_node *np)
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{
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return devm_mdiobus_register(dev, mdio);
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}
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static inline struct mdio_device *of_mdio_find_device(struct device_node *np)
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{
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return NULL;
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}
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static inline struct phy_device *of_phy_find_device(struct device_node *phy_np)
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{
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return NULL;
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}
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static inline struct phy_device *of_phy_connect(struct net_device *dev,
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struct device_node *phy_np,
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void (*hndlr)(struct net_device *),
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u32 flags, phy_interface_t iface)
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{
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return NULL;
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}
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static inline struct phy_device *
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of_phy_get_and_connect(struct net_device *dev, struct device_node *np,
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void (*hndlr)(struct net_device *))
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{
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return NULL;
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}
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static inline struct mii_bus *of_mdio_find_bus(struct device_node *mdio_np)
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{
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return NULL;
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}
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static inline int of_mdio_parse_addr(struct device *dev,
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const struct device_node *np)
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{
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return -ENOSYS;
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}
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static inline int of_phy_register_fixed_link(struct device_node *np)
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{
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return -ENOSYS;
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}
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static inline void of_phy_deregister_fixed_link(struct device_node *np)
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{
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}
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static inline bool of_phy_is_fixed_link(struct device_node *np)
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{
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return false;
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}
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static inline int of_mdiobus_phy_device_register(struct mii_bus *mdio,
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struct phy_device *phy,
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struct device_node *child, u32 addr)
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{
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return -ENOSYS;
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}
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#endif
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#endif /* __LINUX_OF_MDIO_H */
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