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net: bcmasp: Add support for PHY-based Wake-on-LAN

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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.

Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20251013172306.2250223-1-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Florian Fainelli
2025-10-13 10:23:06 -07:00
committed by Jakub Kicinski
parent e5b670e543
commit e1f5bb196f
1 changed files with 32 additions and 2 deletions
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34
drivers/net/ethernet/broadcom/asp2/bcmasp_ethtool.c
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@@ -163,11 +163,30 @@ static void bcmasp_set_msglevel(struct net_device *dev, u32 level)
static void bcmasp_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct bcmasp_intf *intf = netdev_priv(dev);
struct bcmasp_priv *priv = intf->parent;
struct device *kdev = &priv->pdev->dev;
u32 phy_wolopts = 0;
if (dev->phydev) {
phy_ethtool_get_wol(dev->phydev, wol);
phy_wolopts = wol->wolopts;
}
/* MAC is not wake-up capable, return what the PHY does */
if (!device_can_wakeup(kdev))
return;
/* Overlay MAC capabilities with that of the PHY queried before */
wol->supported |= BCMASP_SUPPORTED_WAKE;
wol->wolopts |= intf->wolopts;
/* Return the PHY configured magic password */
if (phy_wolopts & WAKE_MAGICSECURE)
return;
wol->supported = BCMASP_SUPPORTED_WAKE;
wol->wolopts = intf->wolopts;
memset(wol->sopass, 0, sizeof(wol->sopass));
/* Otherwise the MAC one */
if (wol->wolopts & WAKE_MAGICSECURE)
memcpy(wol->sopass, intf->sopass, sizeof(intf->sopass));
}
@@ -177,10 +196,21 @@ static int bcmasp_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
struct bcmasp_intf *intf = netdev_priv(dev);
struct bcmasp_priv *priv = intf->parent;
struct device *kdev = &priv->pdev->dev;
int ret = 0;
/* Try Wake-on-LAN from the PHY first */
if (dev->phydev) {
ret = phy_ethtool_set_wol(dev->phydev, wol);
if (ret != -EOPNOTSUPP && wol->wolopts)
return ret;
}
if (!device_can_wakeup(kdev))
return -EOPNOTSUPP;
if (wol->wolopts & ~BCMASP_SUPPORTED_WAKE)
return -EINVAL;
/* Interface Specific */
intf->wolopts = wol->wolopts;
if (intf->wolopts & WAKE_MAGICSECURE)