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Date:   Mon, 11 Feb 2019 11:46:06 +0000
From:   Russell King <rmk+kernel@...linux.org.uk>
To:     Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Heiner Kallweit <hkallweit1@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org
Subject: [PATCH] net: phylink: add phylink_init_eee() helper

Provide phylink_init_eee() to allow MAC drivers to initialise PHY EEE
from within the ethtool set_eee() method.

Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
---
 drivers/net/phy/phylink.c | 18 ++++++++++++++++++
 include/linux/phylink.h   |  1 +
 2 files changed, 19 insertions(+)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index 79af2e5c9dd5..81bacdb2a8ab 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1281,6 +1281,24 @@ 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()
  * @eee: a pointer to a &struct ethtool_eee for the read parameters
diff --git a/include/linux/phylink.h b/include/linux/phylink.h
index 021fc6595856..f57059e4353f 100644
--- 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);
-- 
2.7.4

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