[POWERPC] fsl_soc: add support to gianfar for fixed-link property

fixed-link says: register new "Fixed/emulated PHY", i.e. PHY that
not connected to the real MDIO bus.

Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 62 insertions, 17 deletions

diff --git a/arch/powerpc/sysdev/fsl_soc.c b/arch/powerpc/sysdev/fsl_soc.c
index f5c240242cfd..474cb8e22f64 100644
--- a/arch/powerpc/sysdev/fsl_soc.c
+++ b/arch/powerpc/sysdev/fsl_soc.c
@@ -24,6 +24,7 @@
 #include <linux/platform_device.h>
 #include <linux/of_platform.h>
 #include <linux/phy.h>
+#include <linux/phy_fixed.h>
 #include <linux/spi/spi.h>
 #include <linux/fsl_devices.h>
 #include <linux/fs_enet_pd.h>
@@ -130,6 +131,37 @@ u32 get_baudrate(void)
 EXPORT_SYMBOL(get_baudrate);
 #endif /* CONFIG_CPM2 */
 
+#ifdef CONFIG_FIXED_PHY
+static int __init of_add_fixed_phys(void)
+{
+        int ret;
+        struct device_node *np;
+        u32 *fixed_link;
+        struct fixed_phy_status status = {};
+
+        for_each_node_by_name(np, "ethernet") {
+                fixed_link  = (u32 *)of_get_property(np, "fixed-link", NULL);
+                if (!fixed_link)
+                        continue;
+
+                status.link = 1;
+                status.duplex = fixed_link[1];
+                status.speed = fixed_link[2];
+                status.pause = fixed_link[3];
+                status.asym_pause = fixed_link[4];
+
+                ret = fixed_phy_add(PHY_POLL, fixed_link[0], &status);
+                if (ret) {
+                        of_node_put(np);
+                        return ret;
+                }
+        }
+
+        return 0;
+}
+arch_initcall(of_add_fixed_phys);
+#endif /* CONFIG_FIXED_PHY */
+
 static int __init gfar_mdio_of_init(void)
 {
         struct device_node *np = NULL;
@@ -198,7 +230,6 @@ static const char *gfar_tx_intr = "tx";
 static const char *gfar_rx_intr = "rx";
 static const char *gfar_err_intr = "error";
 
-
 static int __init gfar_of_init(void)
 {
         struct device_node *np;
@@ -282,29 +313,43 @@ static int __init gfar_of_init(void)
                         gfar_data.interface = PHY_INTERFACE_MODE_MII;
 
                 ph = of_get_property(np, "phy-handle", NULL);
-                phy = of_find_node_by_phandle(*ph);
+                if (ph == NULL) {
+                        u32 *fixed_link;
 
-                if (phy == NULL) {
-                        ret = -ENODEV;
-                        goto unreg;
-                }
+                        fixed_link = (u32 *)of_get_property(np, "fixed-link",
+                                                           NULL);
+                        if (!fixed_link) {
+                                ret = -ENODEV;
+                                goto unreg;
+                        }
 
-                mdio = of_get_parent(phy);
+                        gfar_data.bus_id = 0;
+                        gfar_data.phy_id = fixed_link[0];
+                } else {
+                        phy = of_find_node_by_phandle(*ph);
+
+                        if (phy == NULL) {
+                                ret = -ENODEV;
+                                goto unreg;
+                        }
+
+                        mdio = of_get_parent(phy);
+
+                        id = of_get_property(phy, "reg", NULL);
+                        ret = of_address_to_resource(mdio, 0, &res);
+                        if (ret) {
+                                of_node_put(phy);
+                                of_node_put(mdio);
+                                goto unreg;
+                        }
+
+                        gfar_data.phy_id = *id;
+                        gfar_data.bus_id = res.start;
 
-                id = of_get_property(phy, "reg", NULL);
-                ret = of_address_to_resource(mdio, 0, &res);
-                if (ret) {
                         of_node_put(phy);
                         of_node_put(mdio);
-                        goto unreg;
                 }
 
-                gfar_data.phy_id = *id;
-                gfar_data.bus_id = res.start;
-
-                of_node_put(phy);
-                of_node_put(mdio);
-
                 ret =
                     platform_device_add_data(gfar_dev, &gfar_data,
                                              sizeof(struct