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phy: Add API for {un}registering an mdio device to a bus.

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Rather than have drivers directly manipulate the mii_bus structure,
provide and API for registering and unregistering devices on an MDIO
bus, and performing lookups.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andrew Lunn
2016-01-06 20:11:18 +01:00
committed by David S. Miller
parent 801a8ef54e
commit 7f854420fb
17 changed files with 98 additions and 49 deletions
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8
include/linux/mdio.h
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@@ -19,9 +19,12 @@ struct mdio_device {
struct mii_bus *bus;
/* Bus address of the MDIO device (0-31) */
int addr;
int flags;
};
#define to_mdio_device(d) container_of(d, struct mdio_device, dev)
#define MDIO_DEVICE_FLAG_PHY 1
static inline bool mdio_phy_id_is_c45(int phy_id)
{
return (phy_id & MDIO_PHY_ID_C45) && !(phy_id & ~MDIO_PHY_ID_C45_MASK);
@@ -188,4 +191,9 @@ int mdiobus_read_nested(struct mii_bus *bus, int addr, u32 regnum);
int mdiobus_write(struct mii_bus *bus, int addr, u32 regnum, u16 val);
int mdiobus_write_nested(struct mii_bus *bus, int addr, u32 regnum, u16 val);
int mdiobus_register_device(struct mdio_device *mdiodev);
int mdiobus_unregister_device(struct mdio_device *mdiodev);
bool mdiobus_is_registered_device(struct mii_bus *bus, int addr);
struct phy_device *mdiobus_get_phy(struct mii_bus *bus, int addr);
#endif /* __LINUX_MDIO_H__ */