+static const char *
+ar7240_speed_str(u32 status)
+{
+ u32 speed;
+
+ speed = (status >> AR7240_PORT_STATUS_SPEED_S) &
+ AR7240_PORT_STATUS_SPEED_M;
+ switch (speed) {
+ case AR7240_PORT_STATUS_SPEED_10:
+ return "10baseT";
+ case AR7240_PORT_STATUS_SPEED_100:
+ return "100baseT";
+ case AR7240_PORT_STATUS_SPEED_1000:
+ return "1000baseT";
+ }
+
+ return "unknown";
+}
+
+static int
+ar7240_port_get_link(struct switch_dev *dev, const struct switch_attr *attr,
+ struct switch_val *val)
+{
+ struct ar7240sw *as = sw_to_ar7240(dev);
+ struct mii_bus *mii = as->mii_bus;
+ u32 len;
+ u32 status;
+ int port;
+
+ port = val->port_vlan;
+
+ memset(as->buf, '\0', sizeof(as->buf));
+ status = ar7240sw_reg_read(mii, AR7240_REG_PORT_STATUS(port));
+
+ if (status & AR7240_PORT_STATUS_LINK_UP) {
+ len = snprintf(as->buf, sizeof(as->buf),
+ "port:%d link:up speed:%s %s-duplex %s%s%s",
+ port,
+ ar7240_speed_str(status),
+ (status & AR7240_PORT_STATUS_DUPLEX) ?
+ "full" : "half",
+ (status & AR7240_PORT_STATUS_TXFLOW) ?
+ "txflow ": "",
+ (status & AR7240_PORT_STATUS_RXFLOW) ?
+ "rxflow " : "",
+ (status & AR7240_PORT_STATUS_LINK_AUTO) ?
+ "auto ": "");
+ } else {
+ len = snprintf(as->buf, sizeof(as->buf),
+ "port:%d link:down", port);
+ }
+
+ val->value.s = as->buf;
+ val->len = len;
+
+ return 0;
+}