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net: stmmac: Support WOL with phy 

Currently, the stmmac driver WOL implementation relies on MAC's PMT
feature. We have a case: the MAC HW doesn't enable PMT, instead, we
rely on the phy to support WOL. Implement the support for this case.

Signed-off-by: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jisheng Zhang 2020-07-27 19:03:09 +08:00 committed by David S. Miller
parent e8377e7a29
commit 1d8e5b0f3f
2 changed files with 15 additions and 0 deletions
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11
drivers/net/ethernet/stmicro/stmmac/stmmac_ethtool.c
View File

@ -600,6 +600,9 @@ static void stmmac_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
struct stmmac_priv *priv = netdev_priv(dev);
if (!priv->plat->pmt)
return phylink_ethtool_get_wol(priv->phylink, wol);
mutex_lock(&priv->lock);
if (device_can_wakeup(priv->device)) {
wol->supported = WAKE_MAGIC | WAKE_UCAST;
@ -618,6 +621,14 @@ static int stmmac_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
if (!device_can_wakeup(priv->device))
return -EOPNOTSUPP;
if (!priv->plat->pmt) {
int ret = phylink_ethtool_set_wol(priv->phylink, wol);
if (!ret)
device_set_wakeup_enable(&dev->dev, !!wol->wolopts);
return ret;
}
/* By default almost all GMAC devices support the WoL via
* magic frame but we can disable it if the HW capability
* register shows no support for pmt_magic_frame. */

4
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View File

@ -1075,6 +1075,7 @@ static void stmmac_check_pcs_mode(struct stmmac_priv *priv)
*/
static int stmmac_init_phy(struct net_device *dev)
{
struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL };
struct stmmac_priv *priv = netdev_priv(dev);
struct device_node *node;
int ret;
@ -1100,6 +1101,9 @@ static int stmmac_init_phy(struct net_device *dev)
ret = phylink_connect_phy(priv->phylink, phydev);
}
phylink_ethtool_get_wol(priv->phylink, &wol);
device_set_wakeup_capable(priv->device, !!wol.supported);
return ret;
}