1 files changed, 104 insertions, 0 deletions

diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index fcbf1255ae5a..f2fadb053d52 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -714,6 +714,98 @@ static void bcmgenet_get_ethtool_stats(struct net_device *dev,
 	}
 }
 
+static void bcmgenet_eee_enable_set(struct net_device *dev, bool enable)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	u32 off = priv->hw_params->tbuf_offset + TBUF_ENERGY_CTRL;
+	u32 reg;
+
+	if (enable && !priv->clk_eee_enabled) {
+		clk_prepare_enable(priv->clk_eee);
+		priv->clk_eee_enabled = true;
+	}
+
+	reg = bcmgenet_umac_readl(priv, UMAC_EEE_CTRL);
+	if (enable)
+		reg |= EEE_EN;
+	else
+		reg &= ~EEE_EN;
+	bcmgenet_umac_writel(priv, reg, UMAC_EEE_CTRL);
+
+	/* Enable EEE and switch to a 27Mhz clock automatically */
+	reg = __raw_readl(priv->base + off);
+	if (enable)
+		reg |= TBUF_EEE_EN | TBUF_PM_EN;
+	else
+		reg &= ~(TBUF_EEE_EN | TBUF_PM_EN);
+	__raw_writel(reg, priv->base + off);
+
+	/* Do the same for thing for RBUF */
+	reg = bcmgenet_rbuf_readl(priv, RBUF_ENERGY_CTRL);
+	if (enable)
+		reg |= RBUF_EEE_EN | RBUF_PM_EN;
+	else
+		reg &= ~(RBUF_EEE_EN | RBUF_PM_EN);
+	bcmgenet_rbuf_writel(priv, reg, RBUF_ENERGY_CTRL);
+
+	if (!enable && priv->clk_eee_enabled) {
+		clk_disable_unprepare(priv->clk_eee);
+		priv->clk_eee_enabled = false;
+	}
+
+	priv->eee.eee_enabled = enable;
+	priv->eee.eee_active = enable;
+}
+
+static int bcmgenet_get_eee(struct net_device *dev, struct ethtool_eee *e)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct ethtool_eee *p = &priv->eee;
+
+	if (GENET_IS_V1(priv))
+		return -EOPNOTSUPP;
+
+	e->eee_enabled = p->eee_enabled;
+	e->eee_active = p->eee_active;
+	e->tx_lpi_timer = bcmgenet_umac_readl(priv, UMAC_EEE_LPI_TIMER);
+
+	return phy_ethtool_get_eee(priv->phydev, e);
+}
+
+static int bcmgenet_set_eee(struct net_device *dev, struct ethtool_eee *e)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+	struct ethtool_eee *p = &priv->eee;
+	int ret = 0;
+
+	if (GENET_IS_V1(priv))
+		return -EOPNOTSUPP;
+
+	p->eee_enabled = e->eee_enabled;
+
+	if (!p->eee_enabled) {
+		bcmgenet_eee_enable_set(dev, false);
+	} else {
+		ret = phy_init_eee(priv->phydev, 0);
+		if (ret) {
+			netif_err(priv, hw, dev, "EEE initialization failed\n");
+			return ret;
+		}
+
+		bcmgenet_umac_writel(priv, e->tx_lpi_timer, UMAC_EEE_LPI_TIMER);
+		bcmgenet_eee_enable_set(dev, true);
+	}
+
+	return phy_ethtool_set_eee(priv->phydev, e);
+}
+
+static int bcmgenet_nway_reset(struct net_device *dev)
+{
+	struct bcmgenet_priv *priv = netdev_priv(dev);
+
+	return genphy_restart_aneg(priv->phydev);
+}
+
 /* standard ethtool support functions. */
 static struct ethtool_ops bcmgenet_ethtool_ops = {
 	.get_strings		= bcmgenet_get_strings,
@@ -727,6 +819,9 @@ static struct ethtool_ops bcmgenet_ethtool_ops = {
 	.set_msglevel		= bcmgenet_set_msglevel,
 	.get_wol		= bcmgenet_get_wol,
 	.set_wol		= bcmgenet_set_wol,
+	.get_eee		= bcmgenet_get_eee,
+	.set_eee		= bcmgenet_set_eee,
+	.nway_reset		= bcmgenet_nway_reset,
 };
 
 /* Power down the unimac, based on mode. */
@@ -2585,6 +2680,12 @@ static int bcmgenet_probe(struct platform_device *pdev)
 	if (IS_ERR(priv->clk_wol))
 		dev_warn(&priv->pdev->dev, "failed to get enet-wol clock\n");
 
+	priv->clk_eee = devm_clk_get(&priv->pdev->dev, "enet-eee");
+	if (IS_ERR(priv->clk_eee)) {
+		dev_warn(&priv->pdev->dev, "failed to get enet-eee clock\n");
+		priv->clk_eee = NULL;
+	}
+
 	err = reset_umac(priv);
 	if (err)
 		goto err_clk_disable;
@@ -2735,6 +2836,9 @@ static int bcmgenet_resume(struct device *d)
 
 	phy_resume(priv->phydev);
 
+	if (priv->eee.eee_enabled)
+		bcmgenet_eee_enable_set(dev, true);
+
 	bcmgenet_netif_start(dev);
 
 	return 0;