diff options
Diffstat (limited to 'drivers/net/phy/phy.c')
| -rw-r--r-- | drivers/net/phy/phy.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/phy/phy.c b/drivers/net/phy/phy.c index c008fe050245..d0c1718e2b16 100644 --- a/drivers/net/phy/phy.c +++ b/drivers/net/phy/phy.c @@ -1704,6 +1704,26 @@ void phy_mac_interrupt(struct phy_device *phydev) EXPORT_SYMBOL(phy_mac_interrupt); /** + * phy_eee_tx_clock_stop_capable() - indicate whether the MAC can stop tx clock + * @phydev: target phy_device struct + * + * Indicate whether the MAC can disable the transmit xMII clock while in LPI + * state. Returns 1 if the MAC may stop the transmit clock, 0 if the MAC must + * not stop the transmit clock, or negative error. + */ +int phy_eee_tx_clock_stop_capable(struct phy_device *phydev) +{ + int stat1; + + stat1 = phy_read_mmd(phydev, MDIO_MMD_PCS, MDIO_STAT1); + if (stat1 < 0) + return stat1; + + return !!(stat1 & MDIO_PCS_STAT1_CLKSTOP_CAP); +} +EXPORT_SYMBOL_GPL(phy_eee_tx_clock_stop_capable); + +/** * phy_eee_rx_clock_stop() - configure PHY receive clock in LPI * @phydev: target phy_device struct * @clk_stop_enable: flag to indicate whether the clock can be stopped |