diff options
Diffstat (limited to 'drivers/net/phy/phylink.c')
| -rw-r--r-- | drivers/net/phy/phylink.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c index 4038a12ab75c..2ce04cd91964 100644 --- a/drivers/net/phy/phylink.c +++ b/drivers/net/phy/phylink.c @@ -2437,6 +2437,43 @@ int phylink_mii_c22_pcs_set_advertisement(struct mdio_device *pcs, EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_set_advertisement); /** + * phylink_mii_c22_pcs_config() - configure clause 22 PCS + * @pcs: a pointer to a &struct mdio_device. + * @mode: link autonegotiation mode + * @interface: the PHY interface mode being configured + * @advertising: the ethtool advertisement mask + * + * Configure a Clause 22 PCS PHY with the appropriate negotiation + * parameters for the @mode, @interface and @advertising parameters. + * Returns negative error number on failure, zero if the advertisement + * has not changed, or positive if there is a change. + */ +int phylink_mii_c22_pcs_config(struct mdio_device *pcs, unsigned int mode, + phy_interface_t interface, + const unsigned long *advertising) +{ + bool changed; + u16 bmcr; + int ret; + + ret = phylink_mii_c22_pcs_set_advertisement(pcs, interface, + advertising); + if (ret < 0) + return ret; + + changed = ret > 0; + + bmcr = mode == MLO_AN_INBAND ? BMCR_ANENABLE : 0; + ret = mdiobus_modify(pcs->bus, pcs->addr, MII_BMCR, + BMCR_ANENABLE, bmcr); + if (ret < 0) + return ret; + + return changed ? 1 : 0; +} +EXPORT_SYMBOL_GPL(phylink_mii_c22_pcs_config); + +/** * phylink_mii_c22_pcs_an_restart() - restart 802.3z autonegotiation * @pcs: a pointer to a &struct mdio_device. * |