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Commit 11b3b45d authored by Guenter Roeck's avatar Guenter Roeck Committed by David S. Miller
Browse files

net: dsa: mv88e6xxx: Add EEE support 



EEE configuration is similar for the various MV88E6xxx chips.
Add generic support for it.

Signed-off-by: default avatarGuenter Roeck <linux@roeck-us.net>
Reviewed-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 6f5a272c

drivers/net/dsa/mv88e6xxx.c

+51 −0
Original line number Diff line number Diff line
@@ -649,6 +649,57 @@ int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int addr, int regnum, 
	return mv88e6xxx_phy_wait(ds);

}



int mv88e6xxx_get_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e)

{

	int reg;



	reg = mv88e6xxx_phy_read_indirect(ds, port, 16);

	if (reg < 0)

		return -EOPNOTSUPP;



	e->eee_enabled = !!(reg & 0x0200);

	e->tx_lpi_enabled = !!(reg & 0x0100);



	reg = REG_READ(REG_PORT(port), 0);

	e->eee_active = !!(reg & 0x0040);



	return 0;

}



static int mv88e6xxx_eee_enable_set(struct dsa_switch *ds, int port,

				    bool eee_enabled, bool tx_lpi_enabled)

{

	int reg, nreg;



	reg = mv88e6xxx_phy_read_indirect(ds, port, 16);

	if (reg < 0)

		return reg;



	nreg = reg & ~0x0300;

	if (eee_enabled)

		nreg |= 0x0200;

	if (tx_lpi_enabled)

		nreg |= 0x0100;



	if (nreg != reg)

		return mv88e6xxx_phy_write_indirect(ds, port, 16, nreg);



	return 0;

}



int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,

		      struct phy_device *phydev, struct ethtool_eee *e)

{

	int ret;



	ret = mv88e6xxx_eee_enable_set(ds, port, e->eee_enabled,

				       e->tx_lpi_enabled);

	if (ret)

		return -EOPNOTSUPP;



	return 0;

}



static int __init mv88e6xxx_init(void)

{

#if IS_ENABLED(CONFIG_NET_DSA_MV88E6131)

drivers/net/dsa/mv88e6xxx.h

+3 −0
Original line number Diff line number Diff line
@@ -88,6 +88,9 @@ int mv88e6xxx_eeprom_busy_wait(struct dsa_switch *ds); 
int mv88e6xxx_phy_read_indirect(struct dsa_switch *ds, int addr, int regnum);

int mv88e6xxx_phy_write_indirect(struct dsa_switch *ds, int addr, int regnum,

				 u16 val);

int mv88e6xxx_get_eee(struct dsa_switch *ds, int port, struct ethtool_eee *e);

int mv88e6xxx_set_eee(struct dsa_switch *ds, int port,

		      struct phy_device *phydev, struct ethtool_eee *e);



extern struct dsa_switch_driver mv88e6131_switch_driver;

extern struct dsa_switch_driver mv88e6123_61_65_switch_driver;