diff options
Diffstat (limited to 'drivers/net/phy/broadcom.c')
| -rw-r--r-- | drivers/net/phy/broadcom.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/net/phy/broadcom.c b/drivers/net/phy/broadcom.c index 31fbcdddc9ad..ad71c88c87e7 100644 --- a/drivers/net/phy/broadcom.c +++ b/drivers/net/phy/broadcom.c @@ -766,6 +766,41 @@ static irqreturn_t brcm_fet_handle_interrupt(struct phy_device *phydev) return IRQ_HANDLED; } +static int brcm_fet_suspend(struct phy_device *phydev) +{ + int reg, err, err2, brcmtest; + + /* We cannot use a read/modify/write here otherwise the PHY continues + * to drive LEDs which defeats the purpose of low power mode. + */ + err = phy_write(phydev, MII_BMCR, BMCR_PDOWN); + if (err < 0) + return err; + + /* Enable shadow register access */ + brcmtest = phy_read(phydev, MII_BRCM_FET_BRCMTEST); + if (brcmtest < 0) + return brcmtest; + + reg = brcmtest | MII_BRCM_FET_BT_SRE; + + err = phy_write(phydev, MII_BRCM_FET_BRCMTEST, reg); + if (err < 0) + return err; + + /* Set standby mode */ + err = phy_modify(phydev, MII_BRCM_FET_SHDW_AUXMODE4, + MII_BRCM_FET_SHDW_AM4_STANDBY, + MII_BRCM_FET_SHDW_AM4_STANDBY); + + /* Disable shadow register access */ + err2 = phy_write(phydev, MII_BRCM_FET_BRCMTEST, brcmtest); + if (!err) + err = err2; + + return err; +} + static int bcm54xx_phy_probe(struct phy_device *phydev) { struct bcm54xx_phy_priv *priv; @@ -1033,6 +1068,8 @@ static struct phy_driver broadcom_drivers[] = { .config_init = brcm_fet_config_init, .config_intr = brcm_fet_config_intr, .handle_interrupt = brcm_fet_handle_interrupt, + .suspend = brcm_fet_suspend, + .resume = brcm_fet_config_init, }, { .phy_id = PHY_ID_BCM5241, .phy_id_mask = 0xfffffff0, @@ -1041,6 +1078,8 @@ static struct phy_driver broadcom_drivers[] = { .config_init = brcm_fet_config_init, .config_intr = brcm_fet_config_intr, .handle_interrupt = brcm_fet_handle_interrupt, + .suspend = brcm_fet_suspend, + .resume = brcm_fet_config_init, }, { .phy_id = PHY_ID_BCM5395, .phy_id_mask = 0xfffffff0, |