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
@@ -17,6 +17,7 @@
 #include <linux/phy_fixed.h>
 #include <linux/interrupt.h>
 #include <linux/dma-mapping.h>
+#include <linux/platform_data/b53.h>
 #include <linux/bcm47xx_nvram.h>
 
 static const struct bcma_device_id bgmac_bcma_tbl[] = {
@@ -1408,6 +1409,17 @@ 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
  **************************************************/
@@ -1656,6 +1668,7 @@ 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;
@@ -1703,6 +1716,14 @@ static int bgmac_probe(struct bcma_devic
 	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");
@@ -1730,6 +1751,10 @@ static void bgmac_remove(struct bcma_dev
 {
 	struct bgmac *bgmac = bcma_get_drvdata(core);
 
+	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);
 	bcma_mdio_mii_unregister(bgmac->mii_bus);
--- a/drivers/net/ethernet/broadcom/bgmac.h
+++ b/drivers/net/ethernet/broadcom/bgmac.h
@@ -392,6 +392,7 @@
 #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 {
@@ -473,6 +474,9 @@ struct bgmac {
 	bool has_robosw;
 
 	bool loopback;
+
+	/* platform device for associated switch */
+	struct platform_device *b53_device;
 };
 
 struct mii_bus *bcma_mdio_mii_register(struct bcma_device *core, u8 phyaddr);