net: phy: at803x: add suspend/resume callbacks
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>
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c
index 4179228..bc71947b 100644
--- a/drivers/net/phy/at803x.c
+++ b/drivers/net/phy/at803x.c
@@ -100,6 +100,45 @@
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 @@
.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 @@
.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 @@
.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,