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Commit efabdfb9 authored by Andy Fleming's avatar Andy Fleming Committed by David S. Miller
Browse files

phylib: Add Clause 45 read/write functions 



Need an extra parameter to read or write Clause 45 PHYs, so
need a different API with the extra parameter.

Signed-off-by: default avatarAndy Fleming <afleming@gmail.com>
Signed-off-by: default avatarShaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent b5d2b285

include/linux/phy.h

+39 −0
Original line number Diff line number Diff line
@@ -487,6 +487,24 @@ struct phy_fixup { 
	int (*run)(struct phy_device *phydev);

};



/**

 * phy_read_mmd - Convenience function for reading a register

 * from an MMD on a given PHY.

 * @phydev: The phy_device struct

 * @devad: The MMD to read from

 * @regnum: The register on the MMD to read

 *

 * Same rules as for phy_read();

 */

static inline int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)

{

	if (!phydev->is_c45)

		return -EOPNOTSUPP;



	return mdiobus_read(phydev->bus, phydev->addr,

			    MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff));

}



/**

 * phy_read - Convenience function for reading a given PHY register

 * @phydev: the phy_device struct
@@ -537,6 +555,27 @@ static inline bool phy_is_internal(struct phy_device *phydev) 
	return phydev->is_internal;

}



/**

 * phy_write_mmd - Convenience function for writing a register

 * on an MMD on a given PHY.

 * @phydev: The phy_device struct

 * @devad: The MMD to read from

 * @regnum: The register on the MMD to read

 * @val: value to write to @regnum

 *

 * Same rules as for phy_write();

 */

static inline int phy_write_mmd(struct phy_device *phydev, int devad,

				u32 regnum, u16 val)

{

	if (!phydev->is_c45)

		return -EOPNOTSUPP;



	regnum = MII_ADDR_C45 | ((devad & 0x1f) << 16) | (regnum & 0xffff);



	return mdiobus_write(phydev->bus, phydev->addr, regnum, val);

}



struct phy_device *phy_device_create(struct mii_bus *bus, int addr, int phy_id,

				     bool is_c45,

				     struct phy_c45_device_ids *c45_ids);