diff options
| author |   Andrew Lunn <andrew@lunn.ch> | 2018-09-12 01:53:14 +0200 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-09-12 20:24:21 -0700 |
| commit | 41124fa64d4b298b82266b7ddbefc43540b77b44 (patch) | |
| tree | 6674297c9ee35f311f290299bb5d3151fe46d85c /drivers/net/phy/phy_device.c | |
| parent | net: ethernet: Fix up drivers masking pause support (diff) | |
| download | linux-dev-41124fa64d4b298b82266b7ddbefc43540b77b44.tar.xz linux-dev-41124fa64d4b298b82266b7ddbefc43540b77b44.zip | |
net: ethernet: Add helper to remove a supported link mode
Some MAC hardware cannot support a subset of link modes. e.g. often
1Gbps Full duplex is supported, but Half duplex is not. Add a helper
to remove such a link mode.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/phy/phy_device.c')
| -rw-r--r-- | drivers/net/phy/phy_device.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index db1172db1e7c..e9ca83a438b0 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1765,6 +1765,24 @@ int phy_set_max_speed(struct phy_device *phydev, u32 max_speed) } EXPORT_SYMBOL(phy_set_max_speed); +/** + * phy_remove_link_mode - Remove a supported link mode + * @phydev: phy_device structure to remove link mode from + * @link_mode: Link mode to be removed + * + * Description: Some MACs don't support all link modes which the PHY + * does. e.g. a 1G MAC often does not support 1000Half. Add a helper + * to remove a link mode. + */ +void phy_remove_link_mode(struct phy_device *phydev, u32 link_mode) +{ + WARN_ON(link_mode > 31); + + phydev->supported &= ~BIT(link_mode); + phydev->advertising = phydev->supported; +} +EXPORT_SYMBOL(phy_remove_link_mode); + static void of_set_phy_supported(struct phy_device *phydev) { struct device_node *node = phydev->mdio.dev.of_node; |