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| author |   Heiner Kallweit <hkallweit1@gmail.com> | 2019-02-18 21:27:18 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2019-02-21 13:03:06 -0800 |
| commit | 1af9f16840e920c6193490ae58371fc5cc28bb01 (patch) | |
| tree | 4c19c623bf88f17e404ca52d7650c96c6691e21a /drivers/net/phy | |
| parent | net: phy: use genphy_config_eee_advert in genphy_c45_an_config_aneg (diff) | |
| download | linux-dev-1af9f16840e920c6193490ae58371fc5cc28bb01.tar.xz linux-dev-1af9f16840e920c6193490ae58371fc5cc28bb01.zip | |
net: phy: add genphy_c45_check_and_restart_aneg
This function will be used by config_aneg callback implementations of
PHY drivers and allows to reduce boilerplate code.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/phy-c45.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c index 2f5721430e05..fc3173cc078b 100644 --- a/drivers/net/phy/phy-c45.c +++ b/drivers/net/phy/phy-c45.c @@ -157,6 +157,36 @@ int genphy_c45_restart_aneg(struct phy_device *phydev) EXPORT_SYMBOL_GPL(genphy_c45_restart_aneg); /** + * genphy_c45_check_and_restart_aneg - Enable and restart auto-negotiation + * @phydev: target phy_device struct + * @restart: whether aneg restart is requested + * + * This assumes that the auto-negotiation MMD is present. + * + * Check, and restart auto-negotiation if needed. + */ +int genphy_c45_check_and_restart_aneg(struct phy_device *phydev, bool restart) +{ + int ret = 0; + + if (!restart) { + /* Configure and restart aneg if it wasn't set before */ + ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_CTRL1); + if (ret < 0) + return ret; + + if (!(ret & MDIO_AN_CTRL1_ENABLE)) + restart = true; + } + + if (restart) + ret = genphy_c45_restart_aneg(phydev); + + return ret; +} +EXPORT_SYMBOL_GPL(genphy_c45_check_and_restart_aneg); + +/** * genphy_c45_aneg_done - return auto-negotiation complete status * @phydev: target phy_device struct * |