diff options
Diffstat (limited to 'drivers/net/phy/bcm-cygnus.c')
| -rw-r--r-- | drivers/net/phy/bcm-cygnus.c | 147 |
1 files changed, 146 insertions, 1 deletions
diff --git a/drivers/net/phy/bcm-cygnus.c b/drivers/net/phy/bcm-cygnus.c index ab8e12922bf9..625b7cb76285 100644 --- a/drivers/net/phy/bcm-cygnus.c +++ b/drivers/net/phy/bcm-cygnus.c @@ -10,6 +10,10 @@ #include <linux/netdevice.h> #include <linux/phy.h> +struct bcm_omega_phy_priv { + u64 *stats; +}; + /* Broadcom Cygnus Phy specific registers */ #define MII_BCM_CYGNUS_AFE_VDAC_ICTRL_0 0x91E5 /* VDAL Control register */ @@ -121,6 +125,130 @@ static int bcm_cygnus_resume(struct phy_device *phydev) return genphy_config_aneg(phydev); } +static int bcm_omega_config_init(struct phy_device *phydev) +{ + u8 count, rev; + int ret = 0; + + rev = phydev->phy_id & ~phydev->drv->phy_id_mask; + + pr_info_once("%s: %s PHY revision: 0x%02x\n", + phydev_name(phydev), phydev->drv->name, rev); + + /* Dummy read to a register to workaround an issue upon reset where the + * internal inverter may not allow the first MDIO transaction to pass + * the MDIO management controller and make us return 0xffff for such + * reads. + */ + phy_read(phydev, MII_BMSR); + + switch (rev) { + case 0x00: + ret = bcm_phy_28nm_a0b0_afe_config_init(phydev); + break; + default: + break; + } + + if (ret) + return ret; + + ret = bcm_phy_downshift_get(phydev, &count); + if (ret) + return ret; + + /* Only enable EEE if Wirespeed/downshift is disabled */ + ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE); + if (ret) + return ret; + + return bcm_phy_enable_apd(phydev, true); +} + +static int bcm_omega_resume(struct phy_device *phydev) +{ + int ret; + + /* Re-apply workarounds coming out suspend/resume */ + ret = bcm_omega_config_init(phydev); + if (ret) + return ret; + + /* 28nm Gigabit PHYs come out of reset without any half-duplex + * or "hub" compliant advertised mode, fix that. This does not + * cause any problems with the PHY library since genphy_config_aneg() + * gracefully handles auto-negotiated and forced modes. + */ + return genphy_config_aneg(phydev); +} + +static int bcm_omega_get_tunable(struct phy_device *phydev, + struct ethtool_tunable *tuna, void *data) +{ + switch (tuna->id) { + case ETHTOOL_PHY_DOWNSHIFT: + return bcm_phy_downshift_get(phydev, (u8 *)data); + default: + return -EOPNOTSUPP; + } +} + +static int bcm_omega_set_tunable(struct phy_device *phydev, + struct ethtool_tunable *tuna, + const void *data) +{ + u8 count = *(u8 *)data; + int ret; + + switch (tuna->id) { + case ETHTOOL_PHY_DOWNSHIFT: + ret = bcm_phy_downshift_set(phydev, count); + break; + default: + return -EOPNOTSUPP; + } + + if (ret) + return ret; + + /* Disable EEE advertisement since this prevents the PHY + * from successfully linking up, trigger auto-negotiation restart + * to let the MAC decide what to do. + */ + ret = bcm_phy_set_eee(phydev, count == DOWNSHIFT_DEV_DISABLE); + if (ret) + return ret; + + return genphy_restart_aneg(phydev); +} + +static void bcm_omega_get_phy_stats(struct phy_device *phydev, + struct ethtool_stats *stats, u64 *data) +{ + struct bcm_omega_phy_priv *priv = phydev->priv; + + bcm_phy_get_stats(phydev, priv->stats, stats, data); +} + +static int bcm_omega_probe(struct phy_device *phydev) +{ + struct bcm_omega_phy_priv *priv; + + priv = devm_kzalloc(&phydev->mdio.dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + phydev->priv = priv; + + priv->stats = devm_kcalloc(&phydev->mdio.dev, + bcm_phy_get_sset_count(phydev), sizeof(u64), + GFP_KERNEL); + if (!priv->stats) + return -ENOMEM; + + return 0; +} + static struct phy_driver bcm_cygnus_phy_driver[] = { { .phy_id = PHY_ID_BCM_CYGNUS, @@ -132,10 +260,27 @@ static struct phy_driver bcm_cygnus_phy_driver[] = { .config_intr = bcm_phy_config_intr, .suspend = genphy_suspend, .resume = bcm_cygnus_resume, -} }; +}, { + .phy_id = PHY_ID_BCM_OMEGA, + .phy_id_mask = 0xfffffff0, + .name = "Broadcom Omega Combo GPHY", + .features = PHY_GBIT_FEATURES, + .flags = PHY_IS_INTERNAL, + .config_init = bcm_omega_config_init, + .suspend = genphy_suspend, + .resume = bcm_omega_resume, + .get_tunable = bcm_omega_get_tunable, + .set_tunable = bcm_omega_set_tunable, + .get_sset_count = bcm_phy_get_sset_count, + .get_strings = bcm_phy_get_strings, + .get_stats = bcm_omega_get_phy_stats, + .probe = bcm_omega_probe, +} +}; static struct mdio_device_id __maybe_unused bcm_cygnus_phy_tbl[] = { { PHY_ID_BCM_CYGNUS, 0xfffffff0, }, + { PHY_ID_BCM_OMEGA, 0xfffffff0, }, { } }; MODULE_DEVICE_TABLE(mdio, bcm_cygnus_phy_tbl); |