From 3cb240533ab787899dc7f17aa7d6c5b4810e2e58 Mon Sep 17 00:00:00 2001
From: Hauke Mehrtens <hauke@hauke-m.de>
Date: Fri, 7 Jul 2017 17:26:01 +0200
Subject: bcm53xx: bgmac: use srab switch driver

use the srab switch driver on these SoCs.

Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
---
 drivers/net/ethernet/broadcom/bgmac-bcma.c |  1 +
 drivers/net/ethernet/broadcom/bgmac.c      | 24 ++++++++++++++++++++++++
 drivers/net/ethernet/broadcom/bgmac.h      |  4 ++++
 3 files changed, 29 insertions(+)

--- a/drivers/net/ethernet/broadcom/bgmac-bcma.c
+++ b/drivers/net/ethernet/broadcom/bgmac-bcma.c
@@ -268,6 +268,7 @@ 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;
--- a/drivers/net/ethernet/broadcom/bgmac.c
+++ b/drivers/net/ethernet/broadcom/bgmac.c
@@ -12,6 +12,7 @@
 #include <linux/bcma/bcma.h>
 #include <linux/etherdevice.h>
 #include <linux/interrupt.h>
+#include <linux/platform_data/b53.h>
 #include <linux/bcm47xx_nvram.h>
 #include <linux/phy.h>
 #include <linux/phy_fixed.h>
@@ -1408,6 +1409,17 @@ static const struct ethtool_ops bgmac_et
 	.set_link_ksettings     = phy_ethtool_set_link_ksettings,
 };
 
+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
  **************************************************/
@@ -1542,6 +1554,14 @@ int bgmac_enet_probe(struct bgmac *bgmac
 	/* Omit FCS from max MTU size */
 	net_dev->max_mtu = BGMAC_RX_MAX_FRAME_SIZE - ETH_FCS_LEN;
 
+	if ((bgmac->feature_flags & BGMAC_FEAT_SRAB) && !bgmac_b53_pdata.regs) {
+		bgmac_b53_pdata.regs = ioremap(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");
@@ -1564,6 +1584,10 @@ 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
@@ -428,6 +428,7 @@
 #define BGMAC_FEAT_CC4_IF_SW_TYPE_RGMII	BIT(18)
 #define BGMAC_FEAT_CC7_IF_TYPE_RGMII	BIT(19)
 #define BGMAC_FEAT_IDM_MASK		BIT(20)
+#define BGMAC_FEAT_SRAB			BIT(21)
 
 struct bgmac_slot_info {
 	union {
@@ -533,6 +534,9 @@ struct bgmac {
 	void (*cmn_maskset32)(struct bgmac *bgmac, u16 offset, u32 mask,
 			      u32 set);
 	int (*phy_connect)(struct bgmac *bgmac);
+
+	/* platform device for associated switch */
+	struct platform_device *b53_device;
 };
 
 struct bgmac *bgmac_alloc(struct device *dev);