diff options
Diffstat (limited to 'drivers/net/phy/phy_device.c')
-rw-r--r-- | drivers/net/phy/phy_device.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 711629c49c11..1e595762afea 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -1364,6 +1364,46 @@ phy_standalone_show(struct device *dev, struct device_attribute *attr, static DEVICE_ATTR_RO(phy_standalone); /** + * phy_sfp_connect_phy - Connect the SFP module's PHY to the upstream PHY + * @upstream: pointer to the upstream phy device + * @phy: pointer to the SFP module's phy device + * + * This helper allows keeping track of PHY devices on the link. It adds the + * SFP module's phy to the phy namespace of the upstream phy + */ +int phy_sfp_connect_phy(void *upstream, struct phy_device *phy) +{ + struct phy_device *phydev = upstream; + struct phy_link_topology *topo = phy_get_link_topology(phydev); + + if (topo) + return phy_link_topo_add_phy(topo, phy, PHY_UPSTREAM_PHY, phydev); + + return 0; +} +EXPORT_SYMBOL(phy_sfp_connect_phy); + +/** + * phy_sfp_disconnect_phy - Disconnect the SFP module's PHY from the upstream PHY + * @upstream: pointer to the upstream phy device + * @phy: pointer to the SFP module's phy device + * + * This helper allows keeping track of PHY devices on the link. It removes the + * SFP module's phy to the phy namespace of the upstream phy. As the module phy + * will be destroyed, re-inserting the same module will add a new phy with a + * new index. + */ +void phy_sfp_disconnect_phy(void *upstream, struct phy_device *phy) +{ + struct phy_device *phydev = upstream; + struct phy_link_topology *topo = phy_get_link_topology(phydev); + + if (topo) + phy_link_topo_del_phy(topo, phy); +} +EXPORT_SYMBOL(phy_sfp_disconnect_phy); + +/** * phy_sfp_attach - attach the SFP bus to the PHY upstream network device * @upstream: pointer to the phy device * @bus: sfp bus representing cage being attached |