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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: Andy Fleming <afleming@gmail.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Andy Fleming 2014-01-10 14:25:09 +08:00 committed by David S. Miller
parent b5d2b2858f
commit efabdfb95a
1 changed files with 39 additions and 0 deletions
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39
include/linux/phy.h
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@ -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);