Register switch connected to srab

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -11,6 +11,7 @@
 
 #include <linux/bcma/bcma.h>
 #include <linux/etherdevice.h>
+#include <linux/platform_data/b53.h>
 #include <linux/bcm47xx_nvram.h>
 #include "bgmac.h"
 
@@ -1378,6 +1379,17 @@ static const struct ethtool_ops bgmac_et
 	.get_drvinfo		= bgmac_get_drvinfo,
 };
 
+static struct b53_platform_data bgmac_b53_pdata = {
+};
+
+static struct platform_device bgmac_b53_dev = {
+	.name		= "b53-srab-switch",
+	.id		= -1,
+	.dev		= {
+		.platform_data = &bgmac_b53_pdata,
+	},
+};
+
 /**************************************************
  * MII
  **************************************************/
@@ -1510,6 +1522,14 @@ int bgmac_enet_probe(struct bgmac *info)
 	net_dev->hw_features = net_dev->features;
 	net_dev->vlan_features = net_dev->features;
 
+	if ((bgmac->feature_flags & BGMAC_FEAT_SRAB) && !bgmac_b53_pdata.regs) {
+		bgmac_b53_pdata.regs = ioremap_nocache(0x18007000, 0x1000);
+
+		err = platform_device_register(&bgmac_b53_dev);
+		if (!err)
+			bgmac->b53_device = &bgmac_b53_dev;
+	}
+
 	err = register_netdev(bgmac->net_dev);
 	if (err) {
 		dev_err(bgmac->dev, "Cannot register net device\n");
@@ -1533,6 +1553,10 @@ EXPORT_SYMBOL_GPL(bgmac_enet_probe);
 
 void bgmac_enet_remove(struct bgmac *bgmac)
 {
+	if (bgmac->b53_device)
+		platform_device_unregister(&bgmac_b53_dev);
+	bgmac->b53_device = NULL;
+
 	unregister_netdev(bgmac->net_dev);
 	phy_disconnect(bgmac->net_dev->phydev);
 	netif_napi_del(&bgmac->napi);
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -390,6 +390,7 @@
 #define BGMAC_FEAT_NO_CLR_MIB		BIT(13)
 #define BGMAC_FEAT_FORCE_SPEED_2500	BIT(14)
 #define BGMAC_FEAT_CMDCFG_SR_REV4	BIT(15)
+#define BGMAC_FEAT_SRAB			BIT(16)
 
 struct bgmac_slot_info {
 	union {
@@ -494,6 +495,9 @@ struct bgmac {
 	u32 (*get_bus_clock)(struct bgmac *bgmac);
 	void (*cmn_maskset32)(struct bgmac *bgmac, u16 offset, u32 mask,
 			      u32 set);
+
+	/* platform device for associated switch */
+	struct platform_device *b53_device;
 };
 
 int bgmac_enet_probe(struct bgmac *info);
--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -229,6 +229,7 @@ static int bgmac_probe(struct bcma_devic
 		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;
 		bgmac->feature_flags |= BGMAC_FEAT_NO_RESET;
 		bgmac->feature_flags |= BGMAC_FEAT_FORCE_SPEED_2500;
+		bgmac->feature_flags |= BGMAC_FEAT_SRAB;
 		break;
 	default:
 		bgmac->feature_flags |= BGMAC_FEAT_CLKCTLST;