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dsa: mv88e6xxx: Enable/Disable SERDES on port enable/disable
Implement the port enable/disable callbacks, which enable/disable the SERDES interfaces, if applicable. This should save a bit of power/heat. We also need to enable SERDES on CPU and DSA ports, so keep the existing call to the op, but make it conditional. Signed-off-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -1806,10 +1806,16 @@ static int mv88e6xxx_setup_egress_floods(struct mv88e6xxx_chip *chip, int port)
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static int mv88e6xxx_serdes_power(struct mv88e6xxx_chip *chip, int port,
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bool on)
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{
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if (chip->info->ops->serdes_power)
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return chip->info->ops->serdes_power(chip, port, on);
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int err = 0;
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return 0;
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if (chip->info->ops->serdes_power) {
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err = chip->info->ops->serdes_power(chip, port, on);
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if (err)
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dev_err(chip->dev,
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"Failed to change SERDES power: %d\n", err);
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}
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return err;
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}
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static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
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@ -1862,12 +1868,15 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
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if (err)
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return err;
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/* If this port is connected to a SerDes, make sure the SerDes is
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* powered up.
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/* Enable the SERDES interface for DSA and CPU ports. Normal
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* ports SERDES are enabled when the port is enabled, thus
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* saving a bit of power.
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*/
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err = mv88e6xxx_serdes_power(chip, port, true);
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if (err)
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return err;
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if ((dsa_is_cpu_port(ds, port) || dsa_is_dsa_port(ds, port))) {
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err = mv88e6xxx_serdes_power(chip, port, true);
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if (err)
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return err;
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}
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/* Port Control 2: don't force a good FCS, set the maximum frame size to
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* 10240 bytes, disable 802.1q tags checking, don't discard tagged or
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@ -1969,6 +1978,29 @@ static int mv88e6xxx_setup_port(struct mv88e6xxx_chip *chip, int port)
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return mv88e6xxx_port_write(chip, port, PORT_DEFAULT_VLAN, 0x0000);
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}
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static int mv88e6xxx_port_enable(struct dsa_switch *ds, int port,
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struct phy_device *phydev)
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{
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struct mv88e6xxx_chip *chip = ds->priv;
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int err = 0;
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mutex_lock(&chip->reg_lock);
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mv88e6xxx_serdes_power(chip, port, true);
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mutex_unlock(&chip->reg_lock);
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return err;
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}
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static void mv88e6xxx_port_disable(struct dsa_switch *ds, int port,
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struct phy_device *phydev)
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{
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struct mv88e6xxx_chip *chip = ds->priv;
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mutex_lock(&chip->reg_lock);
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mv88e6xxx_serdes_power(chip, port, false);
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mutex_unlock(&chip->reg_lock);
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}
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static int mv88e6xxx_g1_set_switch_mac(struct mv88e6xxx_chip *chip, u8 *addr)
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{
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int err;
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@ -3809,6 +3841,8 @@ static const struct dsa_switch_ops mv88e6xxx_switch_ops = {
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.get_strings = mv88e6xxx_get_strings,
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.get_ethtool_stats = mv88e6xxx_get_ethtool_stats,
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.get_sset_count = mv88e6xxx_get_sset_count,
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.port_enable = mv88e6xxx_port_enable,
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.port_disable = mv88e6xxx_port_disable,
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.set_eee = mv88e6xxx_set_eee,
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.get_eee = mv88e6xxx_get_eee,
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.get_eeprom_len = mv88e6xxx_get_eeprom_len,
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