diff options
| author |   Bryan Whitehead <Bryan.Whitehead@microchip.com> | 2018-07-23 16:16:32 -0400 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2018-07-23 14:09:19 -0700 |
| commit | c9cf96bb5ff8004219c0df0426fe4d70f0cf3842 (patch) | |
| tree | e0750da4b9e2674e282038392316ddbd817498e0 /drivers/net/ethernet | |
| parent | lan743x: Add power management support (diff) | |
| download | linux-dev-c9cf96bb5ff8004219c0df0426fe4d70f0cf3842.tar.xz linux-dev-c9cf96bb5ff8004219c0df0426fe4d70f0cf3842.zip | |
lan743x: Add EEE support
Implement EEE support
Signed-off-by: Bryan Whitehead <Bryan.Whitehead@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet')
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_ethtool.c | 85 | ||||
| -rw-r--r-- | drivers/net/ethernet/microchip/lan743x_main.h | 3 |
2 files changed, 88 insertions, 0 deletions
diff --git a/drivers/net/ethernet/microchip/lan743x_ethtool.c b/drivers/net/ethernet/microchip/lan743x_ethtool.c index 56b45aa94632..86134d4fadc0 100644 --- a/drivers/net/ethernet/microchip/lan743x_ethtool.c +++ b/drivers/net/ethernet/microchip/lan743x_ethtool.c @@ -415,6 +415,89 @@ static int lan743x_ethtool_get_sset_count(struct net_device *netdev, int sset) } } +static int lan743x_ethtool_get_eee(struct net_device *netdev, + struct ethtool_eee *eee) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + struct phy_device *phydev = netdev->phydev; + u32 buf; + int ret; + + if (!phydev) + return -EIO; + if (!phydev->drv) { + netif_err(adapter, drv, adapter->netdev, + "Missing PHY Driver\n"); + return -EIO; + } + + ret = phy_ethtool_get_eee(phydev, eee); + if (ret < 0) + return ret; + + buf = lan743x_csr_read(adapter, MAC_CR); + if (buf & MAC_CR_EEE_EN_) { + eee->eee_enabled = true; + eee->eee_active = !!(eee->advertised & eee->lp_advertised); + eee->tx_lpi_enabled = true; + /* EEE_TX_LPI_REQ_DLY & tx_lpi_timer are same uSec unit */ + buf = lan743x_csr_read(adapter, MAC_EEE_TX_LPI_REQ_DLY_CNT); + eee->tx_lpi_timer = buf; + } else { + eee->eee_enabled = false; + eee->eee_active = false; + eee->tx_lpi_enabled = false; + eee->tx_lpi_timer = 0; + } + + return 0; +} + +static int lan743x_ethtool_set_eee(struct net_device *netdev, + struct ethtool_eee *eee) +{ + struct lan743x_adapter *adapter = netdev_priv(netdev); + struct phy_device *phydev = NULL; + u32 buf = 0; + int ret = 0; + + if (!netdev) + return -EINVAL; + adapter = netdev_priv(netdev); + if (!adapter) + return -EINVAL; + phydev = netdev->phydev; + if (!phydev) + return -EIO; + if (!phydev->drv) { + netif_err(adapter, drv, adapter->netdev, + "Missing PHY Driver\n"); + return -EIO; + } + + if (eee->eee_enabled) { + ret = phy_init_eee(phydev, 0); + if (ret) { + netif_err(adapter, drv, adapter->netdev, + "EEE initialization failed\n"); + return ret; + } + + buf = (u32)eee->tx_lpi_timer; + lan743x_csr_write(adapter, MAC_EEE_TX_LPI_REQ_DLY_CNT, buf); + + buf = lan743x_csr_read(adapter, MAC_CR); + buf |= MAC_CR_EEE_EN_; + lan743x_csr_write(adapter, MAC_CR, buf); + } else { + buf = lan743x_csr_read(adapter, MAC_CR); + buf &= ~MAC_CR_EEE_EN_; + lan743x_csr_write(adapter, MAC_CR, buf); + } + + return phy_ethtool_set_eee(phydev, eee); +} + #ifdef CONFIG_PM static void lan743x_ethtool_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol) @@ -470,6 +553,8 @@ const struct ethtool_ops lan743x_ethtool_ops = { .get_strings = lan743x_ethtool_get_strings, .get_ethtool_stats = lan743x_ethtool_get_ethtool_stats, .get_sset_count = lan743x_ethtool_get_sset_count, + .get_eee = lan743x_ethtool_get_eee, + .set_eee = lan743x_ethtool_set_eee, .get_link_ksettings = phy_ethtool_get_link_ksettings, .set_link_ksettings = phy_ethtool_set_link_ksettings, #ifdef CONFIG_PM diff --git a/drivers/net/ethernet/microchip/lan743x_main.h b/drivers/net/ethernet/microchip/lan743x_main.h index 72b9beba92d0..93cb60a4eaca 100644 --- a/drivers/net/ethernet/microchip/lan743x_main.h +++ b/drivers/net/ethernet/microchip/lan743x_main.h @@ -82,6 +82,7 @@ ((value << 0) & FCT_FLOW_CTL_ON_THRESHOLD_) #define MAC_CR (0x100) +#define MAC_CR_EEE_EN_ BIT(17) #define MAC_CR_ADD_ BIT(12) #define MAC_CR_ASD_ BIT(11) #define MAC_CR_CNTR_RST_ BIT(5) @@ -117,6 +118,8 @@ #define MAC_MII_DATA (0x124) +#define MAC_EEE_TX_LPI_REQ_DLY_CNT (0x130) + #define MAC_WUCSR (0x140) #define MAC_WUCSR_RFE_WAKE_EN_ BIT(14) #define MAC_WUCSR_PFDA_EN_ BIT(3) |