net: allow sh_eth to get mac address through platform data

Extend the sh_eth driver to allow passing the mac address
using the platform data structure. This to simplify board
setup code.

Signed-off-by: Magnus Damm <damm@opensource.se>
Tested-by: Kuninori Morimoto <morimoto.kuninori@renesas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 12 insertions, 8 deletions

diff --git a/drivers/net/sh_eth.c b/drivers/net/sh_eth.c
index f49d0800c1d1..a4da7e7574eb 100644
--- a/drivers/net/sh_eth.c
+++ b/drivers/net/sh_eth.c
@@ -298,16 +298,20 @@ static void update_mac_address(struct net_device *ndev)
  * When you want use this device, you must set MAC address in bootloader.
  *
  */
-static void read_mac_address(struct net_device *ndev)
+static void read_mac_address(struct net_device *ndev, unsigned char *mac)
 {
         u32 ioaddr = ndev->base_addr;
 
-        ndev->dev_addr[0] = (ctrl_inl(ioaddr + MAHR) >> 24);
-        ndev->dev_addr[1] = (ctrl_inl(ioaddr + MAHR) >> 16) & 0xFF;
-        ndev->dev_addr[2] = (ctrl_inl(ioaddr + MAHR) >> 8) & 0xFF;
-        ndev->dev_addr[3] = (ctrl_inl(ioaddr + MAHR) & 0xFF);
-        ndev->dev_addr[4] = (ctrl_inl(ioaddr + MALR) >> 8) & 0xFF;
-        ndev->dev_addr[5] = (ctrl_inl(ioaddr + MALR) & 0xFF);
+        if (mac[0] || mac[1] || mac[2] || mac[3] || mac[4] || mac[5]) {
+                memcpy(ndev->dev_addr, mac, 6);
+        } else {
+                ndev->dev_addr[0] = (ctrl_inl(ioaddr + MAHR) >> 24);
+                ndev->dev_addr[1] = (ctrl_inl(ioaddr + MAHR) >> 16) & 0xFF;
+                ndev->dev_addr[2] = (ctrl_inl(ioaddr + MAHR) >> 8) & 0xFF;
+                ndev->dev_addr[3] = (ctrl_inl(ioaddr + MAHR) & 0xFF);
+                ndev->dev_addr[4] = (ctrl_inl(ioaddr + MALR) >> 8) & 0xFF;
+                ndev->dev_addr[5] = (ctrl_inl(ioaddr + MALR) & 0xFF);
+        }
 }
 
 struct bb_info {
@@ -1427,7 +1431,7 @@ static int sh_eth_drv_probe(struct platform_device *pdev)
         mdp->post_fw = POST_FW >> (devno << 1);
 
         /* read and set MAC address */
-        read_mac_address(ndev);
+        read_mac_address(ndev, pd->mac_addr);
 
         /* First device only init */
         if (!devno) {