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Message-Id: <20230511172110.2243275-4-f.fainelli@gmail.com>
Date: Thu, 11 May 2023 10:21:10 -0700
From: Florian Fainelli <f.fainelli@...il.com>
To: netdev@...r.kernel.org
Cc: Florian Fainelli <f.fainelli@...il.com>,
Simon Horman <simon.horman@...igine.com>,
Doug Berger <opendmb@...il.com>,
Broadcom internal kernel review list
<bcm-kernel-feedback-list@...adcom.com>,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>, Andrew Lunn <andrew@...n.ch>,
Heiner Kallweit <hkallweit1@...il.com>,
Russell King <linux@...linux.org.uk>,
Marek BehĂșn <kabel@...nel.org>,
Peter Geis <pgwipeout@...il.com>,
Frank <Frank.Sae@...or-comm.com>,
linux-kernel@...r.kernel.org (open list)
Subject: [PATCH net-next v3 3/3] net: bcmgenet: Add support for PHY-based Wake-on-LAN
If available, interrogate the PHY to find out whether we can use it for
Wake-on-LAN. This can be a more power efficient way of implementing
that feature, especially when the MAC is powered off in low power
states.
Reviewed-by: Simon Horman <simon.horman@...igine.com>
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
index 3a4b6cb7b7b9..7a41cad5788f 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet_wol.c
@@ -42,6 +42,12 @@ void bcmgenet_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
struct bcmgenet_priv *priv = netdev_priv(dev);
struct device *kdev = &priv->pdev->dev;
+ if (dev->phydev) {
+ phy_ethtool_get_wol(dev->phydev, wol);
+ if (wol->supported)
+ return;
+ }
+
if (!device_can_wakeup(kdev)) {
wol->supported = 0;
wol->wolopts = 0;
@@ -63,6 +69,14 @@ int bcmgenet_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
struct device *kdev = &priv->pdev->dev;
+ int ret;
+
+ /* Try Wake-on-LAN from the PHY first */
+ if (dev->phydev) {
+ ret = phy_ethtool_set_wol(dev->phydev, wol);
+ if (ret != -EOPNOTSUPP)
+ return ret;
+ }
if (!device_can_wakeup(kdev))
return -ENOTSUPP;
--
2.34.1
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