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net: dsa: mv88e6xxx: Add EEE support

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

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Guenter Roeck 2015-03-06 22:23:51 -08:00 committed by David S. Miller
parent 6f5a272c99
commit 11b3b45d69
2 changed files with 54 additions and 0 deletions
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51
drivers/net/dsa/mv88e6xxx.c
View File

@ -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)

3
drivers/net/dsa/mv88e6xxx.h
View File

@ -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;