net: dsa: bcm_sf2: add support for controlling EEE

[pandora-kernel.git] / drivers / net / dsa / bcm_sf2.c

diff --git a/drivers/net/dsa/bcm_sf2.c b/drivers/net/dsa/bcm_sf2.c
index 634e44e..b962596 100644 (file)
--- a/drivers/net/dsa/bcm_sf2.c
+++ b/drivers/net/dsa/bcm_sf2.c
@@ -220,6 +220,19 @@ static void bcm_sf2_imp_setup(struct dsa_switch *ds, int port)
        core_writel(priv, reg, CORE_STS_OVERRIDE_IMP);
 }
 
+static void bcm_sf2_eee_enable_set(struct dsa_switch *ds, int port, bool enable)
+{
+       struct bcm_sf2_priv *priv = ds_to_priv(ds);
+       u32 reg;
+
+       reg = core_readl(priv, CORE_EEE_EN_CTRL);
+       if (enable)
+               reg |= 1 << port;
+       else
+               reg &= ~(1 << port);
+       core_writel(priv, reg, CORE_EEE_EN_CTRL);
+}
+
 static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
                              struct phy_device *phy)
 {
@@ -247,6 +260,10 @@ static int bcm_sf2_port_setup(struct dsa_switch *ds, int port,
 
        bcm_sf2_imp_vlan_setup(ds, cpu_port);
 
+       /* If EEE was enabled, restore it */
+       if (priv->port_sts[port].eee.eee_enabled)
+               bcm_sf2_eee_enable_set(ds, port, true);
+
        return 0;
 }
 
@@ -279,6 +296,60 @@ static void bcm_sf2_port_disable(struct dsa_switch *ds, int port,
        core_writel(priv, reg, CORE_MEM_PSM_VDD_CTRL);
 }
 
+/* Returns 0 if EEE was not enabled, or 1 otherwise
+ */
+static int bcm_sf2_eee_init(struct dsa_switch *ds, int port,
+                           struct phy_device *phy)
+{
+       struct bcm_sf2_priv *priv = ds_to_priv(ds);
+       struct ethtool_eee *p = &priv->port_sts[port].eee;
+       int ret;
+
+       p->supported = (SUPPORTED_1000baseT_Full | SUPPORTED_100baseT_Full);
+
+       ret = phy_init_eee(phy, 0);
+       if (ret)
+               return 0;
+
+       bcm_sf2_eee_enable_set(ds, port, true);
+
+       return 1;
+}
+
+static int bcm_sf2_sw_get_eee(struct dsa_switch *ds, int port,
+                             struct ethtool_eee *e)
+{
+       struct bcm_sf2_priv *priv = ds_to_priv(ds);
+       struct ethtool_eee *p = &priv->port_sts[port].eee;
+       u32 reg;
+
+       reg = core_readl(priv, CORE_EEE_LPI_INDICATE);
+       e->eee_enabled = p->eee_enabled;
+       e->eee_active = !!(reg & (1 << port));
+
+       return 0;
+}
+
+static int bcm_sf2_sw_set_eee(struct dsa_switch *ds, int port,
+                             struct phy_device *phydev,
+                             struct ethtool_eee *e)
+{
+       struct bcm_sf2_priv *priv = ds_to_priv(ds);
+       struct ethtool_eee *p = &priv->port_sts[port].eee;
+
+       p->eee_enabled = e->eee_enabled;
+
+       if (!p->eee_enabled) {
+               bcm_sf2_eee_enable_set(ds, port, false);
+       } else {
+               p->eee_enabled = bcm_sf2_eee_init(ds, port, phydev);
+               if (!p->eee_enabled)
+                       return -EOPNOTSUPP;
+       }
+
+       return 0;
+}
+
 static irqreturn_t bcm_sf2_switch_0_isr(int irq, void *dev_id)
 {
        struct bcm_sf2_priv *priv = dev_id;
@@ -792,6 +863,8 @@ static struct dsa_switch_driver bcm_sf2_switch_driver = {
        .set_wol                = bcm_sf2_sw_set_wol,
        .port_enable            = bcm_sf2_port_setup,
        .port_disable           = bcm_sf2_port_disable,
+       .get_eee                = bcm_sf2_sw_get_eee,
+       .set_eee                = bcm_sf2_sw_set_eee,
 };
 
 static int __init bcm_sf2_init(void)