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net: phy: at803x: add suspend/resume callbacks

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When WOL is enabled, the chip can't be put into power-down (BMCR_PDOWN)
mode, as that will also switch off the MAC, which consequently leads to
a link loss.

Use BMCR_ISOLATE in that case, which will at least save us some
milliamperes in comparison to normal operation mode.

Signed-off-by: Daniel Mack <zonque@gmail.com>
Acked-by: Mugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Daniel Mack 2013-09-21 16:53:02 +02:00 committed by David S. Miller
parent 0197ffed86
commit 6229ed1f22
1 changed files with 45 additions and 0 deletions
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45
drivers/net/phy/at803x.c
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@ -100,6 +100,45 @@ static void at803x_get_wol(struct phy_device *phydev,
wol->wolopts |= WAKE_MAGIC;
}
static int at803x_suspend(struct phy_device *phydev)
{
int value;
int wol_enabled;
mutex_lock(&phydev->lock);
value = phy_read(phydev, AT803X_INTR_ENABLE);
wol_enabled = value & AT803X_WOL_ENABLE;
value = phy_read(phydev, MII_BMCR);
if (wol_enabled)
value |= BMCR_ISOLATE;
else
value |= BMCR_PDOWN;
phy_write(phydev, MII_BMCR, value);
mutex_unlock(&phydev->lock);
return 0;
}
static int at803x_resume(struct phy_device *phydev)
{
int value;
mutex_lock(&phydev->lock);
value = phy_read(phydev, MII_BMCR);
value &= ~(BMCR_PDOWN | BMCR_ISOLATE);
phy_write(phydev, MII_BMCR, value);
mutex_unlock(&phydev->lock);
return 0;
}
static int at803x_config_init(struct phy_device *phydev)
{
int val;
@ -161,6 +200,8 @@ static struct phy_driver at803x_driver[] = {
.config_init = at803x_config_init,
.set_wol = at803x_set_wol,
.get_wol = at803x_get_wol,
.suspend = at803x_suspend,
.resume = at803x_resume,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = genphy_config_aneg,
@ -176,6 +217,8 @@ static struct phy_driver at803x_driver[] = {
.config_init = at803x_config_init,
.set_wol = at803x_set_wol,
.get_wol = at803x_get_wol,
.suspend = at803x_suspend,
.resume = at803x_resume,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = genphy_config_aneg,
@ -191,6 +234,8 @@ static struct phy_driver at803x_driver[] = {
.config_init = at803x_config_init,
.set_wol = at803x_set_wol,
.get_wol = at803x_get_wol,
.suspend = at803x_suspend,
.resume = at803x_resume,
.features = PHY_GBIT_FEATURES,
.flags = PHY_HAS_INTERRUPT,
.config_aneg = genphy_config_aneg,