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net: dsa: allow switch drivers to implement suspend/resume hooks

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Add an abstraction layer to suspend/resume switch devices, doing the
following split:

- suspend/resume the slave network devices and their corresponding PHY
  devices
- suspend/resume the switch hardware using switch driver callbacks

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli
2014-09-18 17:31:22 -07:00
committed by David S. Miller
parent 34f6b8745d
commit 2446254915
4 changed files with 119 additions and 0 deletions
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31
net/dsa/slave.c
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@@ -412,6 +412,37 @@ static void dsa_slave_phy_setup(struct dsa_slave_priv *p,
p->phy->addr, p->phy->drv->name);
}
int dsa_slave_suspend(struct net_device *slave_dev)
{
struct dsa_slave_priv *p = netdev_priv(slave_dev);
netif_device_detach(slave_dev);
if (p->phy) {
phy_stop(p->phy);
p->old_pause = -1;
p->old_link = -1;
p->old_duplex = -1;
phy_suspend(p->phy);
}
return 0;
}
int dsa_slave_resume(struct net_device *slave_dev)
{
struct dsa_slave_priv *p = netdev_priv(slave_dev);
netif_device_attach(slave_dev);
if (p->phy) {
phy_resume(p->phy);
phy_start(p->phy);
}
return 0;
}
struct net_device *
dsa_slave_create(struct dsa_switch *ds, struct device *parent,
int port, char *name)