net: phylink: add phylink_init_eee() helper

Russell King · davem330 · commit 86e58135bc4a · 2019-02-12T12:22:41.000-05:00
Provide phylink_init_eee() to allow MAC drivers to initialise PHY EEE
from within the ethtool set_eee() method.

Signed-off-by: Russell King &lt;rmk+kernel@armlinux.org.uk&gt;
Signed-off-by: David S. Miller &lt;davem@davemloft.net&gt;
diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
@@ -1271,6 +1271,24 @@ int phylink_get_eee_err(struct phylink *pl)
 }
 EXPORT_SYMBOL_GPL(phylink_get_eee_err);
 
+/**
+ * phylink_init_eee() - init and check the EEE features
+ * @pl: a pointer to a &struct phylink returned from phylink_create()
+ * @clk_stop_enable: allow PHY to stop receive clock
+ *
+ * Must be called either with RTNL held or within mac_link_up()
+ */
+int phylink_init_eee(struct phylink *pl, bool clk_stop_enable)
+{
+	int ret = -EOPNOTSUPP;
+
+	if (pl->phydev)
+		ret = phy_init_eee(pl->phydev, clk_stop_enable);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(phylink_init_eee);
+
 /**
  * phylink_ethtool_get_eee() - read the energy efficient ethernet parameters
  * @pl: a pointer to a &struct phylink returned from phylink_create()
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
@@ -220,6 +220,7 @@ void phylink_ethtool_get_pauseparam(struct phylink *,
 int phylink_ethtool_set_pauseparam(struct phylink *,
 				   struct ethtool_pauseparam *);
 int phylink_get_eee_err(struct phylink *);
+int phylink_init_eee(struct phylink *, bool);
 int phylink_ethtool_get_eee(struct phylink *, struct ethtool_eee *);
 int phylink_ethtool_set_eee(struct phylink *, struct ethtool_eee *);
 int phylink_mii_ioctl(struct phylink *, struct ifreq *, int);
