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net: phy: c45: add a separate function to read BASE-T1 abilities

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Add a separate function to read the BASE-T1 abilities. Some PHYs do not
indicate the availability of the extended BASE-T1 ability register, so
this function must be called separately.

Signed-off-by: Stefan Eichenberger <eichest@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
This commit is contained in:
Stefan Eichenberger
2023-07-19 08:42:56 +02:00
committed by Paolo Abeni
parent 25108a834e
commit eba2e4c2fa
2 changed files with 32 additions and 13 deletions
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44
drivers/net/phy/phy-c45.c
View File

@@ -881,6 +881,36 @@ int genphy_c45_an_config_eee_aneg(struct phy_device *phydev)
return genphy_c45_write_eee_adv(phydev, phydev->advertising_eee);
}
/**
* genphy_c45_pma_baset1_read_abilities - read supported baset1 link modes from PMA
* @phydev: target phy_device struct
*
* Read the supported link modes from the extended BASE-T1 ability register
*/
int genphy_c45_pma_baset1_read_abilities(struct phy_device *phydev)
{
int val;
val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_PMD_BT1);
if (val < 0)
return val;
linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
phydev->supported,
val & MDIO_PMA_PMD_BT1_B10L_ABLE);
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_T1_STAT);
if (val < 0)
return val;
linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
phydev->supported,
val & MDIO_AN_STAT1_ABLE);
return 0;
}
EXPORT_SYMBOL_GPL(genphy_c45_pma_baset1_read_abilities);
/**
* genphy_c45_pma_read_abilities - read supported link modes from PMA
* @phydev: target phy_device struct
@@ -977,21 +1007,9 @@ int genphy_c45_pma_read_abilities(struct phy_device *phydev)
}
if (val & MDIO_PMA_EXTABLE_BT1) {
val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, MDIO_PMA_PMD_BT1);
val = genphy_c45_pma_baset1_read_abilities(phydev);
if (val < 0)
return val;
linkmode_mod_bit(ETHTOOL_LINK_MODE_10baseT1L_Full_BIT,
phydev->supported,
val & MDIO_PMA_PMD_BT1_B10L_ABLE);
val = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_T1_STAT);
if (val < 0)
return val;
linkmode_mod_bit(ETHTOOL_LINK_MODE_Autoneg_BIT,
phydev->supported,
val & MDIO_AN_STAT1_ABLE);
}
}

1
include/linux/phy.h
View File

@@ -1826,6 +1826,7 @@ int genphy_c45_an_config_aneg(struct phy_device *phydev);
int genphy_c45_an_disable_aneg(struct phy_device *phydev);
int genphy_c45_read_mdix(struct phy_device *phydev);
int genphy_c45_pma_read_abilities(struct phy_device *phydev);
int genphy_c45_pma_baset1_read_abilities(struct phy_device *phydev);
int genphy_c45_read_eee_abilities(struct phy_device *phydev);
int genphy_c45_pma_baset1_read_master_slave(struct phy_device *phydev);
int genphy_c45_read_status(struct phy_device *phydev);