net: dsa: allow updating fixed PHY link information

Allow switch drivers to hook a PHY link update callback to perform
port-specific link work.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 17 insertions, 0 deletions

diff --git a/net/dsa/slave.c b/net/dsa/slave.c
index 398d0663d3dd..18ff53836fe3 100644
--- a/net/dsa/slave.c
+++ b/net/dsa/slave.c
@@ -358,6 +358,18 @@ static void dsa_slave_adjust_link(struct net_device *dev)
                 phy_print_status(p->phy);
 }
 
+static int dsa_slave_fixed_link_update(struct net_device *dev,
+                                       struct fixed_phy_status *status)
+{
+        struct dsa_slave_priv *p = netdev_priv(dev);
+        struct dsa_switch *ds = p->parent;
+
+        if (ds->drv->fixed_link_update)
+                ds->drv->fixed_link_update(ds, p->port, status);
+
+        return 0;
+}
+
 /* slave device setup *******************************************************/
 static void dsa_slave_phy_setup(struct dsa_slave_priv *p,
                                 struct net_device *slave_dev)
@@ -365,6 +377,7 @@ static void dsa_slave_phy_setup(struct dsa_slave_priv *p,
         struct dsa_switch *ds = p->parent;
         struct dsa_chip_data *cd = ds->pd;
         struct device_node *phy_dn, *port_dn;
+        bool phy_is_fixed = false;
         int ret;
 
         port_dn = cd->port_dn[p->port];
@@ -380,6 +393,7 @@ static void dsa_slave_phy_setup(struct dsa_slave_priv *p,
                         pr_err("failed to register fixed PHY\n");
                         return;
                 }
+                phy_is_fixed = true;
                 phy_dn = port_dn;
         }
 
@@ -388,6 +402,9 @@ static void dsa_slave_phy_setup(struct dsa_slave_priv *p,
                                         dsa_slave_adjust_link, 0,
                                         p->phy_interface);
 
+        if (p->phy && phy_is_fixed)
+                fixed_phy_set_link_update(p->phy, dsa_slave_fixed_link_update);
+
         /* We could not connect to a designated PHY, so use the switch internal
          * MDIO bus instead
          */