generic: ar8216: add support for get link status

SVN-Revision: 27989

diff --git a/target/linux/generic/files/drivers/net/phy/ar8216.c b/target/linux/generic/files/drivers/net/phy/ar8216.c
index 587f41fc02ef8c74c2bf0f5805184f1995c438e9..2ce93ffa458f9fbb6ecb8a7aa6f3d60f36a14958 100644 (file)
--- a/target/linux/generic/files/drivers/net/phy/ar8216.c
+++ b/target/linux/generic/files/drivers/net/phy/ar8216.c
@@ -46,6 +46,7 @@ struct ar8216_priv {
        int chip;
        bool initialized;
        bool port4_phy;
+       char buf[80];
 
        /* all fields below are cleared on reset */
        bool vlan;
@@ -217,6 +218,59 @@ ar8216_get_vid(struct switch_dev *dev, const struct switch_attr *attr,
        return 0;
 }
 
+static const char *ar8216_speed_str(unsigned speed)
+{
+       switch (speed) {
+       case AR8216_PORT_SPEED_10M:
+               return "10baseT";
+       case AR8216_PORT_SPEED_100M:
+               return "100baseT";
+       case AR8216_PORT_SPEED_1000M:
+               return "1000baseT";
+       }
+
+       return "unknown";
+}
+
+static int ar8216_port_get_link(struct switch_dev *dev,
+                               const struct switch_attr *attr,
+                               struct switch_val *val)
+{
+       struct ar8216_priv *priv = to_ar8216(dev);
+       u32 len;
+       u32 status;
+       int port;
+
+       port = val->port_vlan;
+
+       memset(priv->buf, '\0', sizeof(priv->buf));
+       status = priv->read(priv, AR8216_REG_PORT_STATUS(port));
+
+       if (status & AR8216_PORT_STATUS_LINK_UP) {
+               len = snprintf(priv->buf, sizeof(priv->buf),
+                               "port:%d link:up speed:%s %s-duplex %s%s%s",
+                               port,
+                               ar8216_speed_str((status &
+                                                 AR8216_PORT_STATUS_SPEED) >>
+                                                AR8216_PORT_STATUS_SPEED_S),
+                               (status & AR8216_PORT_STATUS_DUPLEX) ?
+                                       "full" : "half",
+                               (status & AR8216_PORT_STATUS_TXFLOW) ?
+                                       "txflow ": "",
+                               (status & AR8216_PORT_STATUS_RXFLOW) ?
+                                       "rxflow " : "",
+                               (status & AR8216_PORT_STATUS_LINK_AUTO) ?
+                                       "auto ": "");
+       } else {
+               len = snprintf(priv->buf, sizeof(priv->buf), "port:%d link:down",
+                               port);
+       }
+
+       val->value.s = priv->buf;
+       val->len = len;
+
+       return 0;
+}
 
 static int
 ar8216_mangle_tx(struct sk_buff *skb, struct net_device *dev)
@@ -327,6 +381,14 @@ static struct switch_attr ar8216_globals[] = {
 };
 
 static struct switch_attr ar8216_port[] = {
+       {
+               .type = SWITCH_TYPE_STRING,
+               .name = "link",
+               .description = "Get port link information",
+               .max = 1,
+               .set = NULL,
+               .get = ar8216_port_get_link,
+       },
 };
 
 static struct switch_attr ar8216_vlan[] = {