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net: phy: export phy_{read,write}_mmd_indirect 

Some PHY drivers might need to access Clause 45 registers in Clause 22
compatibility mode to e.g: properly advertise EEE support when disabled
by default.

Export these two helper functions: phy_read_mmd_indirect() and
phy_write_mmd_indirect() for drivers to use them.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-08-22 18:55:43 -07:00 committed by David S. Miller
parent a2dbba7674
commit 66ce7fb980
2 changed files with 31 additions and 2 deletions
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6
drivers/net/phy/phy.c
View File

@ -955,7 +955,7 @@ static inline void mmd_phy_indirect(struct mii_bus *bus, int prtad, int devad,
* 3) Write reg 13 // MMD Data Command for MMD DEVAD
* 3) Read reg 14 // Read MMD data
*/
static int phy_read_mmd_indirect(struct phy_device *phydev, int prtad,
int phy_read_mmd_indirect(struct phy_device *phydev, int prtad,
int devad, int addr)
{
struct phy_driver *phydrv = phydev->drv;
@ -971,6 +971,7 @@ static int phy_read_mmd_indirect(struct phy_device *phydev, int prtad,
}
return value;
}
EXPORT_SYMBOL(phy_read_mmd_indirect);
/**
* phy_write_mmd_indirect - writes data to the MMD registers
@ -988,7 +989,7 @@ static int phy_read_mmd_indirect(struct phy_device *phydev, int prtad,
* 3) Write reg 13 // MMD Data Command for MMD DEVAD
* 3) Write reg 14 // Write MMD data
*/
static void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
int devad, int addr, u32 data)
{
struct phy_driver *phydrv = phydev->drv;
@ -1002,6 +1003,7 @@ static void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
phydrv->write_mmd_indirect(phydev, prtad, devad, addr, data);
}
}
EXPORT_SYMBOL(phy_write_mmd_indirect);
/**
* phy_init_eee - init and check the EEE feature

27
include/linux/phy.h
View File

@ -597,6 +597,19 @@ static inline int phy_read_mmd(struct phy_device *phydev, int devad, u32 regnum)
MII_ADDR_C45 | (devad << 16) | (regnum & 0xffff));
}
/**
* phy_read_mmd_indirect - reads data from the MMD registers
* @phydev: The PHY device bus
* @prtad: MMD Address
* @devad: MMD DEVAD
* @addr: PHY address on the MII bus
*
* Description: it reads data from the MMD registers (clause 22 to access to
* clause 45) of the specified phy address.
*/
int phy_read_mmd_indirect(struct phy_device *phydev, int prtad,
int devad, int addr);
/**
* phy_read - Convenience function for reading a given PHY register
* @phydev: the phy_device struct
@ -668,6 +681,20 @@ static inline int phy_write_mmd(struct phy_device *phydev, int devad,
return mdiobus_write(phydev->bus, phydev->addr, regnum, val);
}
/**
* phy_write_mmd_indirect - writes data to the MMD registers
* @phydev: The PHY device
* @prtad: MMD Address
* @devad: MMD DEVAD
* @addr: PHY address on the MII bus
* @data: data to write in the MMD register
*
* Description: Write data from the MMD registers of the specified
* phy address.
*/
void phy_write_mmd_indirect(struct phy_device *phydev, int prtad,
int devad, int addr, u32 data);
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);