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path: root/drivers/net/phy/phy-c45.c
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Diffstat (limited to 'drivers/net/phy/phy-c45.c')
-rw-r--r--drivers/net/phy/phy-c45.c44
1 files changed, 44 insertions, 0 deletions
diff --git a/drivers/net/phy/phy-c45.c b/drivers/net/phy/phy-c45.c
index 7af5fa81daf6..e17672bd180e 100644
--- a/drivers/net/phy/phy-c45.c
+++ b/drivers/net/phy/phy-c45.c
@@ -75,6 +75,50 @@ int genphy_c45_pma_setup_forced(struct phy_device *phydev)
EXPORT_SYMBOL_GPL(genphy_c45_pma_setup_forced);
/**
+ * genphy_c45_an_config_aneg - configure advertisement registers
+ * @phydev: target phy_device struct
+ *
+ * Configure advertisement registers based on modes set in phydev->advertising
+ *
+ * Returns negative errno code on failure, 0 if advertisement didn't change,
+ * or 1 if advertised modes changed.
+ */
+int genphy_c45_an_config_aneg(struct phy_device *phydev)
+{
+ int changed = 0, ret;
+ u32 adv;
+
+ linkmode_and(phydev->advertising, phydev->advertising,
+ phydev->supported);
+
+ adv = linkmode_adv_to_mii_adv_t(phydev->advertising);
+
+ ret = phy_modify_mmd(phydev, MDIO_MMD_AN, MDIO_AN_ADVERTISE,
+ ADVERTISE_ALL | ADVERTISE_100BASE4 |
+ ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM,
+ adv);
+ if (ret < 0)
+ return ret;
+ if (ret > 0)
+ changed = 1;
+
+ adv = linkmode_adv_to_mii_10gbt_adv_t(phydev->advertising);
+
+ ret = phy_modify_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_CTRL,
+ MDIO_AN_10GBT_CTRL_ADV10G |
+ MDIO_AN_10GBT_CTRL_ADV5G |
+ MDIO_AN_10GBT_CTRL_ADV2_5G,
+ adv);
+ if (ret < 0)
+ return ret;
+ if (ret > 0)
+ changed = 1;
+
+ return changed;
+}
+EXPORT_SYMBOL_GPL(genphy_c45_an_config_aneg);
+
+/**
* genphy_c45_an_disable_aneg - disable auto-negotiation
* @phydev: target phy_device struct
*