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Commit 6229ed1f authored by Daniel Mack's avatar Daniel Mack Committed by David S. Miller
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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: default avatarDaniel Mack <zonque@gmail.com>
Acked-by: default avatarMugunthan V N <mugunthanvnm@ti.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0197ffed

drivers/net/phy/at803x.c

+45 −0
Original line number Diff line number Diff line
@@ -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,