diff options
| author | Daniel Mack <zonque@gmail.com> | 2013-09-21 16:53:02 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-09-27 17:28:32 -0400 |
| commit | 6229ed1f22592d5ee8360a638cb965fef88b080f (patch) | |
| tree | b8e3c2f614b9a607a0632895ac18a5d3842fac05 /drivers | |
| parent | 0197ffed8690751b027253b97f68df6304aaa6a1 (diff) | |
| download | linux-6229ed1f22592d5ee8360a638cb965fef88b080f.tar.bz2 | |
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>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/phy/at803x.c | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/drivers/net/phy/at803x.c b/drivers/net/phy/at803x.c index 417922810c79..bc71947b1ec3 100644 --- a/drivers/net/phy/at803x.c +++ b/drivers/net/phy/at803x.c @@ -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, |