powerpc: Add support for multiple gfar mdio interfaces

The old code assumed there was only one, but the 8572 actually has 3.

Also, our usual id, 0xe0024520, gets resolved to -1 somewhere, and this was
preventing the multiple buses from having different ids.  So we only keep
the low 20 bits, which have the interesting info, anyway.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index ca180a9..ef4cb0d 100644 (file)
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -207,66 +207,58 @@ static int __init of_add_fixed_phys(void)
 arch_initcall(of_add_fixed_phys);
 #endif /* CONFIG_FIXED_PHY */
 
-static int __init gfar_mdio_of_init(void)
+static int gfar_mdio_of_init_one(struct device_node *np)
 {
-       struct device_node *np = NULL;
+       int k;
+       struct device_node *child = NULL;
+       struct gianfar_mdio_data mdio_data;
        struct platform_device *mdio_dev;
        struct resource res;
        int ret;
 
-       np = of_find_compatible_node(np, NULL, "fsl,gianfar-mdio");
-
-       /* try the deprecated version */
-       if (!np)
-               np = of_find_compatible_node(np, "mdio", "gianfar");
+       memset(&res, 0, sizeof(res));
+       memset(&mdio_data, 0, sizeof(mdio_data));
 
-       if (np) {
-               int k;
-               struct device_node *child = NULL;
-               struct gianfar_mdio_data mdio_data;
+       ret = of_address_to_resource(np, 0, &res);
+       if (ret)
+               return ret;
 
-               memset(&res, 0, sizeof(res));
-               memset(&mdio_data, 0, sizeof(mdio_data));
+       mdio_dev = platform_device_register_simple("fsl-gianfar_mdio",
+                       res.start&0xfffff, &res, 1);
+       if (IS_ERR(mdio_dev))
+               return PTR_ERR(mdio_dev);
 
-               ret = of_address_to_resource(np, 0, &res);
-               if (ret)
-                       goto err;
+       for (k = 0; k < 32; k++)
+               mdio_data.irq[k] = PHY_POLL;
 
-               mdio_dev =
-                   platform_device_register_simple("fsl-gianfar_mdio",
-                                                   res.start, &res, 1);
-               if (IS_ERR(mdio_dev)) {
-                       ret = PTR_ERR(mdio_dev);
-                       goto err;
+       while ((child = of_get_next_child(np, child)) != NULL) {
+               int irq = irq_of_parse_and_map(child, 0);
+               if (irq != NO_IRQ) {
+                       const u32 *id = of_get_property(child, "reg", NULL);
+                       mdio_data.irq[*id] = irq;
                }
+       }
 
-               for (k = 0; k < 32; k++)
-                       mdio_data.irq[k] = PHY_POLL;
+       ret = platform_device_add_data(mdio_dev, &mdio_data,
+                               sizeof(struct gianfar_mdio_data));
+       if (ret)
+               platform_device_unregister(mdio_dev);
 
-               while ((child = of_get_next_child(np, child)) != NULL) {
-                       int irq = irq_of_parse_and_map(child, 0);
-                       if (irq != NO_IRQ) {
-                               const u32 *id = of_get_property(child,
-                                                       "reg", NULL);
-                               mdio_data.irq[*id] = irq;
-                       }
-               }
+       return ret;
+}
 
-               ret =
-                   platform_device_add_data(mdio_dev, &mdio_data,
-                                            sizeof(struct gianfar_mdio_data));
-               if (ret)
-                       goto unreg;
-       }
+static int __init gfar_mdio_of_init(void)
+{
+       struct device_node *np = NULL;
 
-       of_node_put(np);
-       return 0;
+       for_each_compatible_node(np, NULL, "fsl,gianfar-mdio")
+               gfar_mdio_of_init_one(np);
 
-unreg:
-       platform_device_unregister(mdio_dev);
-err:
-       of_node_put(np);
-       return ret;
+       /* try the deprecated version */
+       for_each_compatible_node(np, "mdio", "gianfar");
+               gfar_mdio_of_init_one(np);
+
+       return 0;
 }
 
 arch_initcall(gfar_mdio_of_init);
@@ -393,7 +385,7 @@ static int __init gfar_of_init(void)
 
                        gfar_data.phy_id = *id;
                        snprintf(gfar_data.bus_id, MII_BUS_ID_SIZE, "%llx",
-                                (unsigned long long)res.start);
+                                (unsigned long long)res.start&0xfffff);
 
                        of_node_put(phy);
                        of_node_put(mdio);