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| author |   Russell King <rmk+kernel@armlinux.org.uk> | 2017-12-29 12:46:27 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-01-02 15:00:49 -0500 |
| commit | ea4efe25ec937a7bc1108e26261c9dd4082375af (patch) | |
| tree | bc643aee953a577f4350a928a7ddc404d8bd765d /drivers/net/phy/phy-c45.c | |
| parent | net: phy: marvell10g: update header comments (diff) | |
| download | linux-dev-ea4efe25ec937a7bc1108e26261c9dd4082375af.tar.xz linux-dev-ea4efe25ec937a7bc1108e26261c9dd4082375af.zip | |
net: phy: marvell10g: add MDI swap reporting
Add reporting of the MDI swap to the Marvell 10G PHY driver by providing
a generic implementation for the standard 10GBASE-T pair swap register
and polarity register. We also support reading the MDI swap status for
1G and below from a PCS register.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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) |