diff options
Diffstat (limited to 'drivers/net/phy/phy-c45.c')
| -rw-r--r-- | drivers/net/phy/phy-c45.c | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c index dada819c6b78..a4576859afae 100644 --- a/drivers/net/phy/phy-c45.c +++ b/drivers/net/phy/phy-c45.c @@ -233,6 +233,39 @@ int genphy_c45_read_pma(struct phy_device *phydev) } EXPORT_SYMBOL_GPL(genphy_c45_read_pma); +/** + * genphy_c45_read_mdix - read mdix status from PMA + * @phydev: target phy_device struct + */ +int genphy_c45_read_mdix(struct phy_device *phydev) +{ + int val; + + if (phydev->speed == SPEED_10000) { + val = phy_read_mmd(phydev, MDIO_MMD_PMAPMD, + MDIO_PMA_10GBT_SWAPPOL); + if (val < 0) + return val; + + switch (val) { + case MDIO_PMA_10GBT_SWAPPOL_ABNX | MDIO_PMA_10GBT_SWAPPOL_CDNX: + phydev->mdix = ETH_TP_MDI; + break; + + case 0: + phydev->mdix = ETH_TP_MDI_X; + break; + + default: + phydev->mdix = ETH_TP_MDI_INVALID; + break; + } + } + + return 0; +} +EXPORT_SYMBOL_GPL(genphy_c45_read_mdix); + /* The gen10g_* functions are the old Clause 45 stub */ static int gen10g_config_aneg(struct phy_device *phydev) |