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Commit 66ce7fb9 authored by Florian Fainelli's avatar Florian Fainelli Committed by David S. Miller
Browse files

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: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent a2dbba76

drivers/net/phy/phy.c

+4 −2
Original line number Diff line number Diff line
@@ -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

include/linux/phy.h

+27 −0
Original line number Diff line number Diff line
@@ -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);