diff options
Diffstat (limited to 'drivers/net/phy/phy_device.c')
| -rw-r--r-- | drivers/net/phy/phy_device.c | 76 |
1 files changed, 62 insertions, 14 deletions
diff --git a/drivers/net/phy/phy_device.c b/drivers/net/phy/phy_device.c index 82514e72b3d8..0ce606624296 100644 --- a/drivers/net/phy/phy_device.c +++ b/drivers/net/phy/phy_device.c @@ -139,6 +139,7 @@ static int phy_scan_fixups(struct phy_device *phydev) mutex_unlock(&phy_fixup_lock); return err; } + phydev->has_fixups = true; } } mutex_unlock(&phy_fixup_lock); @@ -534,16 +535,16 @@ static int phy_poll_reset(struct phy_device *phydev) int phy_init_hw(struct phy_device *phydev) { - int ret; + int ret = 0; if (!phydev->drv || !phydev->drv->config_init) return 0; - ret = phy_write(phydev, MII_BMCR, BMCR_RESET); - if (ret < 0) - return ret; + if (phydev->drv->soft_reset) + ret = phydev->drv->soft_reset(phydev); + else + ret = genphy_soft_reset(phydev); - ret = phy_poll_reset(phydev); if (ret < 0) return ret; @@ -683,10 +684,9 @@ EXPORT_SYMBOL(phy_detach); int phy_suspend(struct phy_device *phydev) { struct phy_driver *phydrv = to_phy_driver(phydev->dev.driver); - struct ethtool_wolinfo wol; + struct ethtool_wolinfo wol = { .cmd = ETHTOOL_GWOL }; /* If the device has WOL enabled, we cannot suspend the PHY */ - wol.cmd = ETHTOOL_GWOL; phy_ethtool_get_wol(phydev, &wol); if (wol.wolopts) return -EBUSY; @@ -865,6 +865,22 @@ int genphy_config_aneg(struct phy_device *phydev) } EXPORT_SYMBOL(genphy_config_aneg); +/** + * genphy_aneg_done - return auto-negotiation status + * @phydev: target phy_device struct + * + * Description: Reads the status register and returns 0 either if + * auto-negotiation is incomplete, or if there was an error. + * Returns BMSR_ANEGCOMPLETE if auto-negotiation is done. + */ +int genphy_aneg_done(struct phy_device *phydev) +{ + int retval = phy_read(phydev, MII_BMSR); + + return (retval < 0) ? retval : (retval & BMSR_ANEGCOMPLETE); +} +EXPORT_SYMBOL(genphy_aneg_done); + static int gen10g_config_aneg(struct phy_device *phydev) { return 0; @@ -916,6 +932,8 @@ int genphy_read_status(struct phy_device *phydev) int err; int lpa; int lpagb = 0; + int common_adv; + int common_adv_gb = 0; /* Update the link, but return if there was an error */ err = genphy_update_link(phydev); @@ -937,7 +955,7 @@ int genphy_read_status(struct phy_device *phydev) phydev->lp_advertising = mii_stat1000_to_ethtool_lpa_t(lpagb); - lpagb &= adv << 2; + common_adv_gb = lpagb & adv << 2; } lpa = phy_read(phydev, MII_LPA); @@ -950,25 +968,25 @@ int genphy_read_status(struct phy_device *phydev) if (adv < 0) return adv; - lpa &= adv; + common_adv = lpa & adv; phydev->speed = SPEED_10; phydev->duplex = DUPLEX_HALF; phydev->pause = 0; phydev->asym_pause = 0; - if (lpagb & (LPA_1000FULL | LPA_1000HALF)) { + if (common_adv_gb & (LPA_1000FULL | LPA_1000HALF)) { phydev->speed = SPEED_1000; - if (lpagb & LPA_1000FULL) + if (common_adv_gb & LPA_1000FULL) phydev->duplex = DUPLEX_FULL; - } else if (lpa & (LPA_100FULL | LPA_100HALF)) { + } else if (common_adv & (LPA_100FULL | LPA_100HALF)) { phydev->speed = SPEED_100; - if (lpa & LPA_100FULL) + if (common_adv & LPA_100FULL) phydev->duplex = DUPLEX_FULL; } else - if (lpa & LPA_10FULL) + if (common_adv & LPA_10FULL) phydev->duplex = DUPLEX_FULL; if (phydev->duplex == DUPLEX_FULL) { @@ -1028,6 +1046,27 @@ static int gen10g_read_status(struct phy_device *phydev) return 0; } +/** + * genphy_soft_reset - software reset the PHY via BMCR_RESET bit + * @phydev: target phy_device struct + * + * Description: Perform a software PHY reset using the standard + * BMCR_RESET bit and poll for the reset bit to be cleared. + * + * Returns: 0 on success, < 0 on failure + */ +int genphy_soft_reset(struct phy_device *phydev) +{ + int ret; + + ret = phy_write(phydev, MII_BMCR, BMCR_RESET); + if (ret < 0) + return ret; + + return phy_poll_reset(phydev); +} +EXPORT_SYMBOL(genphy_soft_reset); + static int genphy_config_init(struct phy_device *phydev) { int val; @@ -1074,6 +1113,12 @@ static int genphy_config_init(struct phy_device *phydev) return 0; } +static int gen10g_soft_reset(struct phy_device *phydev) +{ + /* Do nothing for now */ + return 0; +} + static int gen10g_config_init(struct phy_device *phydev) { /* Temporarily just say we support everything */ @@ -1248,9 +1293,11 @@ static struct phy_driver genphy_driver[] = { .phy_id = 0xffffffff, .phy_id_mask = 0xffffffff, .name = "Generic PHY", + .soft_reset = genphy_soft_reset, .config_init = genphy_config_init, .features = 0, .config_aneg = genphy_config_aneg, + .aneg_done = genphy_aneg_done, .read_status = genphy_read_status, .suspend = genphy_suspend, .resume = genphy_resume, @@ -1259,6 +1306,7 @@ static struct phy_driver genphy_driver[] = { .phy_id = 0xffffffff, .phy_id_mask = 0xffffffff, .name = "Generic 10G PHY", + .soft_reset = gen10g_soft_reset, .config_init = gen10g_config_init, .features = 0, .config_aneg = gen10g_config_aneg, |