ethoc: Add device tree configuration

This patch adds the ability to describe ethernet devices via a flattened
device tree.  As device tree remains an optional feature, these bits all
need to be guarded by CONFIG_OF ifdefs.

MAC address is settable via the device tree parameter "local-mac-address";
however, the selection of the phy id is limited to probing, for now.

Signed-off-by: Jonas Bonn <jonas@southpole.se>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethoc.c b/drivers/net/ethoc.c
index c5a2fe0..9ea3c54 100644 (file)
--- a/drivers/net/ethoc.c
+++ b/drivers/net/ethoc.c
@@ -19,6 +19,7 @@
 #include <linux/platform_device.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <linux/of.h>
 #include <net/ethoc.h>
 
 static int buffer_size = 0x8000; /* 32 KBytes */
@@ -982,10 +983,23 @@ static int __devinit ethoc_probe(struct platform_device *pdev)
 
        /* Allow the platform setup code to pass in a MAC address. */
        if (pdev->dev.platform_data) {
-               struct ethoc_platform_data *pdata =
-                       (struct ethoc_platform_data *)pdev->dev.platform_data;
+               struct ethoc_platform_data *pdata = pdev->dev.platform_data;
                memcpy(netdev->dev_addr, pdata->hwaddr, IFHWADDRLEN);
                priv->phy_id = pdata->phy_id;
+       } else {
+               priv->phy_id = -1;
+
+#ifdef CONFIG_OF
+               {
+               const uint8_t* mac;
+
+               mac = of_get_property(pdev->dev.of_node,
+                                     "local-mac-address",
+                                     NULL);
+               if (mac)
+                       memcpy(netdev->dev_addr, mac, IFHWADDRLEN);
+               }
+#endif
        }
 
        /* Check that the given MAC address is valid. If it isn't, read the
@@ -1113,6 +1127,16 @@ static int ethoc_resume(struct platform_device *pdev)
 # define ethoc_resume  NULL
 #endif
 
+#ifdef CONFIG_OF
+static struct of_device_id ethoc_match[] = {
+       {
+               .compatible = "opencores,ethoc",
+       },
+       {},
+};
+MODULE_DEVICE_TABLE(of, ethoc_match);
+#endif
+
 static struct platform_driver ethoc_driver = {
        .probe   = ethoc_probe,
        .remove  = __devexit_p(ethoc_remove),
@@ -1120,6 +1144,10 @@ static struct platform_driver ethoc_driver = {
        .resume  = ethoc_resume,
        .driver  = {
                .name = "ethoc",
+               .owner = THIS_MODULE,
+#ifdef CONFIG_OF
+               .of_match_table = ethoc_match,
+#endif
        },
 };