net/macb: add support for phy irq via gpio pin

Signed-off-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 11 insertions, 1 deletions

diff --git a/drivers/net/ethernet/cadence/macb.c b/drivers/net/ethernet/cadence/macb.c
index 1fac769989ad..ca34efc62bae 100644
--- a/drivers/net/ethernet/cadence/macb.c
+++ b/drivers/net/ethernet/cadence/macb.c
@@ -16,6 +16,7 @@
 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/init.h>
+#include <linux/gpio.h>
 #include <linux/interrupt.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
@@ -261,7 +262,9 @@ static void macb_handle_link_change(struct net_device *dev)
 static int macb_mii_probe(struct net_device *dev)
 {
         struct macb *bp = netdev_priv(dev);
+        struct macb_platform_data *pdata;
         struct phy_device *phydev;
+        int phy_irq;
         int ret;
 
         phydev = phy_find_first(bp->mii_bus);
@@ -270,7 +273,14 @@ static int macb_mii_probe(struct net_device *dev)
                 return -1;
         }
 
-        /* TODO : add pin_irq */
+        pdata = dev_get_platdata(&bp->pdev->dev);
+        if (pdata && gpio_is_valid(pdata->phy_irq_pin)) {
+                ret = devm_gpio_request(&bp->pdev->dev, pdata->phy_irq_pin, "phy int");
+                if (!ret) {
+                        phy_irq = gpio_to_irq(pdata->phy_irq_pin);
+                        phydev->irq = (phy_irq < 0) ? PHY_POLL : phy_irq;
+                }
+        }
 
         /* attach the mac to the phy */
         ret = phy_connect_direct(dev, phydev, &macb_handle_link_change, 0,