NET: au1000-eth: Convert to platform_driver model

This patch converts the au1000-eth driver to become a full platform-driver
as it ought to be. We now pass PHY-speficic configurations through
platform_data but for compatibility the driver still assumes the default
settings (search for PHY1 on MAC0) when no platform_data is passed. Tested
on my MTX-1 board.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
Cc: linux-mips@linux-mips.org
Cc: netdev@vger.kernel.org
Acked-by: David S. Miller <davem@davemloft.net>
Patchwork: http://patchwork.linux-mips.org/patch/619/
Patchwork: http://patchwork.linux-mips.org/patch/963/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 223 insertions, 218 deletions

diff --git a/drivers/net/au1000_eth.c b/drivers/net/au1000_eth.c
index 6bac04603a88..6e5a68ecde09 100644
--- a/drivers/net/au1000_eth.c
+++ b/drivers/net/au1000_eth.c
@@ -55,6 +55,7 @@
 #include <linux/delay.h>
 #include <linux/crc32.h>
 #include <linux/phy.h>
+#include <linux/platform_device.h>
 
 #include <asm/cpu.h>
 #include <asm/mipsregs.h>
@@ -63,6 +64,7 @@
 #include <asm/processor.h>
 
 #include <au1000.h>
+#include <au1xxx_eth.h>
 #include <prom.h>
 
 #include "au1000_eth.h"
@@ -112,15 +114,15 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
  *
  * PHY detection algorithm
  *
- * If AU1XXX_PHY_STATIC_CONFIG is undefined, the PHY setup is
+ * If phy_static_config is undefined, the PHY setup is
  * autodetected:
  *
  * mii_probe() first searches the current MAC's MII bus for a PHY,
- * selecting the first (or last, if AU1XXX_PHY_SEARCH_HIGHEST_ADDR is
+ * selecting the first (or last, if phy_search_highest_addr is
  * defined) PHY address not already claimed by another netdev.
  *
  * If nothing was found that way when searching for the 2nd ethernet
- * controller's PHY and AU1XXX_PHY1_SEARCH_ON_MAC0 is defined, then
+ * controller's PHY and phy1_search_mac0 is defined, then
  * the first MII bus is searched as well for an unclaimed PHY; this is
  * needed in case of a dual-PHY accessible only through the MAC0's MII
  * bus.
@@ -129,9 +131,7 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
  * controller is not registered to the network subsystem.
  */
 
-/* autodetection defaults */
-#undef  AU1XXX_PHY_SEARCH_HIGHEST_ADDR
-#define AU1XXX_PHY1_SEARCH_ON_MAC0
+/* autodetection defaults: phy1_search_mac0 */
 
 /* static PHY setup
  *
@@ -148,29 +148,6 @@ struct au1000_private *au_macs[NUM_ETH_INTERFACES];
  * specific irq-map
  */
 
-#if defined(CONFIG_MIPS_BOSPORUS)
-/*
- * Micrel/Kendin 5 port switch attached to MAC0,
- * MAC0 is associated with PHY address 5 (== WAN port)
- * MAC1 is not associated with any PHY, since it's connected directly
- * to the switch.
- * no interrupts are used
- */
-# define AU1XXX_PHY_STATIC_CONFIG
-
-# define AU1XXX_PHY0_ADDR  5
-# define AU1XXX_PHY0_BUSID 0
-#  undef AU1XXX_PHY0_IRQ
-
-#  undef AU1XXX_PHY1_ADDR
-#  undef AU1XXX_PHY1_BUSID
-#  undef AU1XXX_PHY1_IRQ
-#endif
-
-#if defined(AU1XXX_PHY0_BUSID) && (AU1XXX_PHY0_BUSID > 0)
-# error MAC0-associated PHY attached 2nd MACs MII bus not supported yet
-#endif
-
 static void enable_mac(struct net_device *dev, int force_reset)
 {
         unsigned long flags;
@@ -390,67 +367,55 @@ static int mii_probe (struct net_device *dev)
         struct au1000_private *const aup = netdev_priv(dev);
         struct phy_device *phydev = NULL;
 
-#if defined(AU1XXX_PHY_STATIC_CONFIG)
-        BUG_ON(aup->mac_id < 0 || aup->mac_id > 1);
+        if (aup->phy_static_config) {
+                BUG_ON(aup->mac_id < 0 || aup->mac_id > 1);
 
-        if(aup->mac_id == 0) { /* get PHY0 */
-# if defined(AU1XXX_PHY0_ADDR)
-                phydev = au_macs[AU1XXX_PHY0_BUSID]->mii_bus->phy_map[AU1XXX_PHY0_ADDR];
-# else
-                printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
-                        dev->name);
-                return 0;
-# endif /* defined(AU1XXX_PHY0_ADDR) */
-        } else if (aup->mac_id == 1) { /* get PHY1 */
-# if defined(AU1XXX_PHY1_ADDR)
-                phydev = au_macs[AU1XXX_PHY1_BUSID]->mii_bus->phy_map[AU1XXX_PHY1_ADDR];
-# else
-                printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
-                        dev->name);
+                if (aup->phy_addr)
+                        phydev = aup->mii_bus->phy_map[aup->phy_addr];
+                else
+                        printk (KERN_INFO DRV_NAME ":%s: using PHY-less setup\n",
+                                dev->name);
                 return 0;
-# endif /* defined(AU1XXX_PHY1_ADDR) */
-        }
-
-#else /* defined(AU1XXX_PHY_STATIC_CONFIG) */
-        int phy_addr;
-
-        /* find the first (lowest address) PHY on the current MAC's MII bus */
-        for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
-                if (aup->mii_bus->phy_map[phy_addr]) {
-                        phydev = aup->mii_bus->phy_map[phy_addr];
-# if !defined(AU1XXX_PHY_SEARCH_HIGHEST_ADDR)
-                        break; /* break out with first one found */
-# endif
-                }
+        } else {
+                int phy_addr;
+
+                /* find the first (lowest address) PHY on the current MAC's MII bus */
+                for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++)
+                        if (aup->mii_bus->phy_map[phy_addr]) {
+                                phydev = aup->mii_bus->phy_map[phy_addr];
+                                if (!aup->phy_search_highest_addr)
+                                        break; /* break out with first one found */
+                        }
 
-# if defined(AU1XXX_PHY1_SEARCH_ON_MAC0)
-        /* try harder to find a PHY */
-        if (!phydev && (aup->mac_id == 1)) {
-                /* no PHY found, maybe we have a dual PHY? */
-                printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, "
-                        "let's see if it's attached to MAC0...\n");
+                if (aup->phy1_search_mac0) {
+                        /* try harder to find a PHY */
+                        if (!phydev && (aup->mac_id == 1)) {
+                                /* no PHY found, maybe we have a dual PHY? */
+                                printk (KERN_INFO DRV_NAME ": no PHY found on MAC1, "
+                                        "let's see if it's attached to MAC0...\n");
 
-                BUG_ON(!au_macs[0]);
+                                /* find the first (lowest address) non-attached PHY on
+                                 * the MAC0 MII bus */
+                                for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
+                                        struct phy_device *const tmp_phydev =
+                                                        aup->mii_bus->phy_map[phy_addr];
 
-                /* find the first (lowest address) non-attached PHY on
-                 * the MAC0 MII bus */
-                for (phy_addr = 0; phy_addr < PHY_MAX_ADDR; phy_addr++) {
-                        struct phy_device *const tmp_phydev =
-                                au_macs[0]->mii_bus->phy_map[phy_addr];
+                                        if (aup->mac_id == 1)
+                                                break;
 
-                        if (!tmp_phydev)
-                                continue; /* no PHY here... */
+                                        if (!tmp_phydev)
+                                                continue; /* no PHY here... */
 
-                        if (tmp_phydev->attached_dev)
-                                continue; /* already claimed by MAC0 */
+                                        if (tmp_phydev->attached_dev)
+                                                continue; /* already claimed by MAC0 */
 
-                        phydev = tmp_phydev;
-                        break; /* found it */
+                                        phydev = tmp_phydev;
+                                        break; /* found it */
+                                }
+                        }
                 }
         }
-# endif /* defined(AU1XXX_PHY1_SEARCH_OTHER_BUS) */
 
-#endif /* defined(AU1XXX_PHY_STATIC_CONFIG) */
         if (!phydev) {
                 printk (KERN_ERR DRV_NAME ":%s: no PHY found\n", dev->name);
                 return -1;
@@ -578,31 +543,6 @@ setup_hw_rings(struct au1000_private *aup, u32 rx_base, u32 tx_base)
         }
 }
 
-static struct {
-        u32 base_addr;
-        u32 macen_addr;
-        int irq;
-        struct net_device *dev;
-} iflist[2] = {
-#ifdef CONFIG_SOC_AU1000
-        {AU1000_ETH0_BASE, AU1000_MAC0_ENABLE, AU1000_MAC0_DMA_INT},
-        {AU1000_ETH1_BASE, AU1000_MAC1_ENABLE, AU1000_MAC1_DMA_INT}
-#endif
-#ifdef CONFIG_SOC_AU1100
-        {AU1100_ETH0_BASE, AU1100_MAC0_ENABLE, AU1100_MAC0_DMA_INT}
-#endif
-#ifdef CONFIG_SOC_AU1500
-        {AU1500_ETH0_BASE, AU1500_MAC0_ENABLE, AU1500_MAC0_DMA_INT},
-        {AU1500_ETH1_BASE, AU1500_MAC1_ENABLE, AU1500_MAC1_DMA_INT}
-#endif
-#ifdef CONFIG_SOC_AU1550
-        {AU1550_ETH0_BASE, AU1550_MAC0_ENABLE, AU1550_MAC0_DMA_INT},
-        {AU1550_ETH1_BASE, AU1550_MAC1_ENABLE, AU1550_MAC1_DMA_INT}
-#endif
-};
-
-static int num_ifs;
-
 /*
  * ethtool operations
  */
@@ -711,7 +651,6 @@ static int au1000_init(struct net_device *dev)
 
 static inline void update_rx_stats(struct net_device *dev, u32 status)
 {
-        struct au1000_private *aup = netdev_priv(dev);
         struct net_device_stats *ps = &dev->stats;
 
         ps->rx_packets++;
@@ -969,7 +908,7 @@ static netdev_tx_t au1000_tx(struct sk_buff *skb, struct net_device *dev)
         }
 
         pDB = aup->tx_db_inuse[aup->tx_head];
-        skb_copy_from_linear_data(skb, pDB->vaddr, skb->len);
+        skb_copy_from_linear_data(skb, (void *)pDB->vaddr, skb->len);
         if (skb->len < ETH_ZLEN) {
                 for (i=skb->len; i<ETH_ZLEN; i++) {
                         ((char *)pDB->vaddr)[i] = 0;
@@ -1058,53 +997,59 @@ static const struct net_device_ops au1000_netdev_ops = {
         .ndo_change_mtu         = eth_change_mtu,
 };
 
-static struct net_device * au1000_probe(int port_num)
+static int __devinit au1000_probe(struct platform_device *pdev)
 {
         static unsigned version_printed = 0;
         struct au1000_private *aup = NULL;
+        struct au1000_eth_platform_data *pd;
         struct net_device *dev = NULL;
         db_dest_t *pDB, *pDBfree;
+        int irq, i, err = 0;
+        struct resource *base, *macen;
         char ethaddr[6];
-        int irq, i, err;
-        u32 base, macen;
 
-        if (port_num >= NUM_ETH_INTERFACES)
-                return NULL;
+        base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        if (!base) {
+                printk(KERN_ERR DRV_NAME ": failed to retrieve base register\n");
+                err = -ENODEV;
+                goto out;
+        }
 
-        base  = CPHYSADDR(iflist[port_num].base_addr );
-        macen = CPHYSADDR(iflist[port_num].macen_addr);
-        irq = iflist[port_num].irq;
+        macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        if (!macen) {
+                printk(KERN_ERR DRV_NAME ": failed to retrieve MAC Enable register\n");
+                err = -ENODEV;
+                goto out;
+        }
 
-        if (!request_mem_region( base, MAC_IOSIZE, "Au1x00 ENET") ||
-            !request_mem_region(macen, 4, "Au1x00 ENET"))
-                return NULL;
+        irq = platform_get_irq(pdev, 0);
+        if (irq < 0) {
+                printk(KERN_ERR DRV_NAME ": failed to retrieve IRQ\n");
+                err = -ENODEV;
+                goto out;
+        }
 
-        if (version_printed++ == 0)
-                printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
+        if (!request_mem_region(base->start, resource_size(base), pdev->name)) {
+                printk(KERN_ERR DRV_NAME ": failed to request memory region for base registers\n");
+                err = -ENXIO;
+                goto out;
+        }
+
+        if (!request_mem_region(macen->start, resource_size(macen), pdev->name)) {
+                printk(KERN_ERR DRV_NAME ": failed to request memory region for MAC enable register\n");
+                err = -ENXIO;
+                goto err_request;
+        }
 
         dev = alloc_etherdev(sizeof(struct au1000_private));
         if (!dev) {
                 printk(KERN_ERR "%s: alloc_etherdev failed\n", DRV_NAME);
-                return NULL;
+                err = -ENOMEM;
+                goto err_alloc;
         }
 
-        dev->base_addr = base;
-        dev->irq = irq;
-        dev->netdev_ops = &au1000_netdev_ops;
-        SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
-        dev->watchdog_timeo = ETH_TX_TIMEOUT;
-
-        err = register_netdev(dev);
-        if (err != 0) {
-                printk(KERN_ERR "%s: Cannot register net device, error %d\n",
-                                DRV_NAME, err);
-                free_netdev(dev);
-                return NULL;
-        }
-
-        printk("%s: Au1xx0 Ethernet found at 0x%x, irq %d\n",
-                dev->name, base, irq);
-
+        SET_NETDEV_DEV(dev, &pdev->dev);
+        platform_set_drvdata(pdev, dev);
         aup = netdev_priv(dev);
 
         spin_lock_init(&aup->lock);
@@ -1115,21 +1060,29 @@ static struct net_device * au1000_probe(int port_num)
                                                 (NUM_TX_BUFFS + NUM_RX_BUFFS),
                                                 &aup->dma_addr, 0);
         if (!aup->vaddr) {
-                free_netdev(dev);
-                release_mem_region( base, MAC_IOSIZE);
-                release_mem_region(macen, 4);
-                return NULL;
+                printk(KERN_ERR DRV_NAME ": failed to allocate data buffers\n");
+                err = -ENOMEM;
+                goto err_vaddr;
         }
 
         /* aup->mac is the base address of the MAC's registers */
-        aup->mac = (volatile mac_reg_t *)iflist[port_num].base_addr;
+        aup->mac = (volatile mac_reg_t *)ioremap_nocache(base->start, resource_size(base));
+        if (!aup->mac) {
+                printk(KERN_ERR DRV_NAME ": failed to ioremap MAC registers\n");
+                err = -ENXIO;
+                goto err_remap1;
+        }
 
-        /* Setup some variables for quick register address access */
-        aup->enable = (volatile u32 *)iflist[port_num].macen_addr;
-        aup->mac_id = port_num;
-        au_macs[port_num] = aup;
+        /* Setup some variables for quick register address access */
+        aup->enable = (volatile u32 *)ioremap_nocache(macen->start, resource_size(macen));
+        if (!aup->enable) {
+                printk(KERN_ERR DRV_NAME ": failed to ioremap MAC enable register\n");
+                err = -ENXIO;
+                goto err_remap2;
+        }
+        aup->mac_id = pdev->id;
 
-        if (port_num == 0) {
+        if (pdev->id == 0) {
                 if (prom_get_ethernet_addr(ethaddr) == 0)
                         memcpy(au1000_mac_addr, ethaddr, sizeof(au1000_mac_addr));
                 else {
@@ -1139,7 +1092,7 @@ static struct net_device * au1000_probe(int port_num)
                 }
 
                 setup_hw_rings(aup, MAC0_RX_DMA_ADDR, MAC0_TX_DMA_ADDR);
-        } else if (port_num == 1)
+        } else if (pdev->id == 1)
                 setup_hw_rings(aup, MAC1_RX_DMA_ADDR, MAC1_TX_DMA_ADDR);
 
         /*
@@ -1147,14 +1100,37 @@ static struct net_device * au1000_probe(int port_num)
          * to match those that are printed on their stickers
          */
         memcpy(dev->dev_addr, au1000_mac_addr, sizeof(au1000_mac_addr));
-        dev->dev_addr[5] += port_num;
+        dev->dev_addr[5] += pdev->id;
 
         *aup->enable = 0;
         aup->mac_enabled = 0;
 
+        pd = pdev->dev.platform_data;
+        if (!pd) {
+                printk(KERN_INFO DRV_NAME ": no platform_data passed, PHY search on MAC0\n");
+                aup->phy1_search_mac0 = 1;
+        } else {
+                aup->phy_static_config = pd->phy_static_config;
+                aup->phy_search_highest_addr = pd->phy_search_highest_addr;
+                aup->phy1_search_mac0 = pd->phy1_search_mac0;
+                aup->phy_addr = pd->phy_addr;
+                aup->phy_busid = pd->phy_busid;
+                aup->phy_irq = pd->phy_irq;
+        }
+
+        if (aup->phy_busid && aup->phy_busid > 0) {
+                printk(KERN_ERR DRV_NAME ": MAC0-associated PHY attached 2nd MACs MII"
+                                "bus not supported yet\n");
+                err = -ENODEV;
+                goto err_mdiobus_alloc;
+        }
+
         aup->mii_bus = mdiobus_alloc();
-        if (aup->mii_bus == NULL)
-                goto err_out;
+        if (aup->mii_bus == NULL) {
+                printk(KERN_ERR DRV_NAME ": failed to allocate mdiobus structure\n");
+                err = -ENOMEM;
+                goto err_mdiobus_alloc;
+        }
 
         aup->mii_bus->priv = dev;
         aup->mii_bus->read = au1000_mdiobus_read;
@@ -1168,23 +1144,19 @@ static struct net_device * au1000_probe(int port_num)
 
         for(i = 0; i < PHY_MAX_ADDR; ++i)
                 aup->mii_bus->irq[i] = PHY_POLL;
-
         /* if known, set corresponding PHY IRQs */
-#if defined(AU1XXX_PHY_STATIC_CONFIG)
-# if defined(AU1XXX_PHY0_IRQ)
-        if (AU1XXX_PHY0_BUSID == aup->mac_id)
-                aup->mii_bus->irq[AU1XXX_PHY0_ADDR] = AU1XXX_PHY0_IRQ;
-# endif
-# if defined(AU1XXX_PHY1_IRQ)
-        if (AU1XXX_PHY1_BUSID == aup->mac_id)
-                aup->mii_bus->irq[AU1XXX_PHY1_ADDR] = AU1XXX_PHY1_IRQ;
-# endif
-#endif
-        mdiobus_register(aup->mii_bus);
+        if (aup->phy_static_config)
+                if (aup->phy_irq && aup->phy_busid == aup->mac_id)
+                        aup->mii_bus->irq[aup->phy_addr] = aup->phy_irq;
+
+        err = mdiobus_register(aup->mii_bus);
+        if (err) {
+                printk(KERN_ERR DRV_NAME " failed to register MDIO bus\n");
+                goto err_mdiobus_reg;
+        }
 
-        if (mii_probe(dev) != 0) {
+        if (mii_probe(dev) != 0)
                 goto err_out;
-        }
 
         pDBfree = NULL;
         /* setup the data buffer descriptors and attach a buffer to each one */
@@ -1216,19 +1188,35 @@ static struct net_device * au1000_probe(int port_num)
                 aup->tx_db_inuse[i] = pDB;
         }
 
+        dev->base_addr = base->start;
+        dev->irq = irq;
+        dev->netdev_ops = &au1000_netdev_ops;
+        SET_ETHTOOL_OPS(dev, &au1000_ethtool_ops);
+        dev->watchdog_timeo = ETH_TX_TIMEOUT;
+
         /*
          * The boot code uses the ethernet controller, so reset it to start
          * fresh.  au1000_init() expects that the device is in reset state.
          */
         reset_mac(dev);
 
-        return dev;
+        err = register_netdev(dev);
+        if (err) {
+                printk(KERN_ERR DRV_NAME "%s: Cannot register net device, aborting.\n",
+                                        dev->name);
+                goto err_out;
+        }
+
+        printk("%s: Au1xx0 Ethernet found at 0x%lx, irq %d\n",
+                        dev->name, (unsigned long)base->start, irq);
+        if (version_printed++ == 0)
+                printk("%s version %s %s\n", DRV_NAME, DRV_VERSION, DRV_AUTHOR);
+
+        return 0;
 
 err_out:
-        if (aup->mii_bus != NULL) {
+        if (aup->mii_bus != NULL)
                 mdiobus_unregister(aup->mii_bus);
-                mdiobus_free(aup->mii_bus);
-        }
 
         /* here we should have a valid dev plus aup-> register addresses
          * so we can reset the mac properly.*/
@@ -1242,67 +1230,84 @@ err_out:
                 if (aup->tx_db_inuse[i])
                         ReleaseDB(aup, aup->tx_db_inuse[i]);
         }
+err_mdiobus_reg:
+        mdiobus_free(aup->mii_bus);
+err_mdiobus_alloc:
+        iounmap(aup->enable);
+err_remap2:
+        iounmap(aup->mac);
+err_remap1:
         dma_free_noncoherent(NULL, MAX_BUF_SIZE * (NUM_TX_BUFFS + NUM_RX_BUFFS),
                              (void *)aup->vaddr, aup->dma_addr);
-        unregister_netdev(dev);
+err_vaddr:
         free_netdev(dev);
-        release_mem_region( base, MAC_IOSIZE);
-        release_mem_region(macen, 4);
-        return NULL;
+err_alloc:
+        release_mem_region(macen->start, resource_size(macen));
+err_request:
+        release_mem_region(base->start, resource_size(base));
+out:
+        return err;
 }
 
-/*
- * Setup the base address and interrupt of the Au1xxx ethernet macs
- * based on cpu type and whether the interface is enabled in sys_pinfunc
- * register. The last interface is enabled if SYS_PF_NI2 (bit 4) is 0.
- */
-static int __init au1000_init_module(void)
+static int __devexit au1000_remove(struct platform_device *pdev)
 {
-        int ni = (int)((au_readl(SYS_PINFUNC) & (u32)(SYS_PF_NI2)) >> 4);
-        struct net_device *dev;
-        int i, found_one = 0;
+        struct net_device *dev = platform_get_drvdata(pdev);
+        struct au1000_private *aup = netdev_priv(dev);
+        int i;
+        struct resource *base, *macen;
 
-        num_ifs = NUM_ETH_INTERFACES - ni;
+        platform_set_drvdata(pdev, NULL);
+
+        unregister_netdev(dev);
+        mdiobus_unregister(aup->mii_bus);
+        mdiobus_free(aup->mii_bus);
+
+        for (i = 0; i < NUM_RX_DMA; i++)
+                if (aup->rx_db_inuse[i])
+                        ReleaseDB(aup, aup->rx_db_inuse[i]);
+
+        for (i = 0; i < NUM_TX_DMA; i++)
+                if (aup->tx_db_inuse[i])
+                        ReleaseDB(aup, aup->tx_db_inuse[i]);
+
+        dma_free_noncoherent(NULL, MAX_BUF_SIZE *
+                        (NUM_TX_BUFFS + NUM_RX_BUFFS),
+                        (void *)aup->vaddr, aup->dma_addr);
+
+        iounmap(aup->mac);
+        iounmap(aup->enable);
+
+        base = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        release_mem_region(base->start, resource_size(base));
+
+        macen = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+        release_mem_region(macen->start, resource_size(macen));
+
+        free_netdev(dev);
 
-        for(i = 0; i < num_ifs; i++) {
-                dev = au1000_probe(i);
-                iflist[i].dev = dev;
-                if (dev)
-                        found_one++;
-        }
-        if (!found_one)
-                return -ENODEV;
         return 0;
 }
 
-static void __exit au1000_cleanup_module(void)
+static struct platform_driver au1000_eth_driver = {
+        .probe  = au1000_probe,
+        .remove = __devexit_p(au1000_remove),
+        .driver = {
+                .name   = "au1000-eth",
+                .owner  = THIS_MODULE,
+        },
+};
+MODULE_ALIAS("platform:au1000-eth");
+
+
+static int __init au1000_init_module(void)
+{
+        return platform_driver_register(&au1000_eth_driver);
+}
+
+static void __exit au1000_exit_module(void)
 {
-        int i, j;
-        struct net_device *dev;
-        struct au1000_private *aup;
-
-        for (i = 0; i < num_ifs; i++) {
-                dev = iflist[i].dev;
-                if (dev) {
-                        aup = netdev_priv(dev);
-                        unregister_netdev(dev);
-                        mdiobus_unregister(aup->mii_bus);
-                        mdiobus_free(aup->mii_bus);
-                        for (j = 0; j < NUM_RX_DMA; j++)
-                                if (aup->rx_db_inuse[j])
-                                        ReleaseDB(aup, aup->rx_db_inuse[j]);
-                        for (j = 0; j < NUM_TX_DMA; j++)
-                                if (aup->tx_db_inuse[j])
-                                        ReleaseDB(aup, aup->tx_db_inuse[j]);
-                        dma_free_noncoherent(NULL, MAX_BUF_SIZE *
-                                             (NUM_TX_BUFFS + NUM_RX_BUFFS),
-                                             (void *)aup->vaddr, aup->dma_addr);
-                        release_mem_region(dev->base_addr, MAC_IOSIZE);
-                        release_mem_region(CPHYSADDR(iflist[i].macen_addr), 4);
-                        free_netdev(dev);
-                }
-        }
+        platform_driver_unregister(&au1000_eth_driver);
 }
 
 module_init(au1000_init_module);
-module_exit(au1000_cleanup_module);
+module_exit(au1000_exit_module);