2 files changed, 135 insertions, 21 deletions

diff --git a/drivers/net/ethernet/cirrus/Kconfig b/drivers/net/ethernet/cirrus/Kconfig
index 1f8648f099c7..8388e36cf08f 100644
--- a/drivers/net/ethernet/cirrus/Kconfig
+++ b/drivers/net/ethernet/cirrus/Kconfig
@@ -5,8 +5,7 @@
 config NET_VENDOR_CIRRUS
         bool "Cirrus devices"
         default y
-        depends on ISA || EISA || MACH_IXDP2351 || ARCH_IXDP2X01 \
-                || MACH_MX31ADS || MACH_QQ2440 || (ARM && ARCH_EP93XX) || MAC
+        depends on ISA || EISA || ARM || MAC
         ---help---
           If you have a network (Ethernet) card belonging to this class, say Y
           and read the Ethernet-HOWTO, available from
@@ -21,8 +20,7 @@ if NET_VENDOR_CIRRUS
 
 config CS89x0
         tristate "CS89x0 support"
-        depends on (ISA || EISA || MACH_IXDP2351 \
-                || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440)
+        depends on ISA || EISA || ARM
         ---help---
           Support for CS89x0 chipset based Ethernet cards. If you have a
           network (Ethernet) card of this type, say Y and read the
@@ -33,10 +31,15 @@ config CS89x0
           To compile this driver as a module, choose M here. The module
           will be called cs89x0.
 
-config CS89x0_NONISA_IRQ
-        def_bool y
-        depends on CS89x0 != n
-        depends on MACH_IXDP2351 || ARCH_IXDP2X01 || MACH_MX31ADS || MACH_QQ2440
+config CS89x0_PLATFORM
+        bool "CS89x0 platform driver support"
+        depends on CS89x0
+        help
+          Say Y to compile the cs89x0 driver as a platform driver. This
+          makes this driver suitable for use on certain evaluation boards
+          such as the iMX21ADS.
+
+          If you are unsure, say N.
 
 config EP93XX_ETH
         tristate "EP93xx Ethernet support"
diff --git a/drivers/net/ethernet/cirrus/cs89x0.c b/drivers/net/ethernet/cirrus/cs89x0.c
index f328da24c8fa..6b3cd24eb454 100644
--- a/drivers/net/ethernet/cirrus/cs89x0.c
+++ b/drivers/net/ethernet/cirrus/cs89x0.c
@@ -100,9 +100,6 @@
 
 */
 
-/* Always include 'config.h' first in case the user wants to turn on
-   or override something. */
-#include <linux/module.h>
 
 /*
  * Set this to zero to disable DMA code
@@ -131,9 +128,12 @@
 
 */
 
+#include <linux/module.h>
+#include <linux/printk.h>
 #include <linux/errno.h>
 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
+#include <linux/platform_device.h>
 #include <linux/kernel.h>
 #include <linux/types.h>
 #include <linux/fcntl.h>
@@ -151,6 +151,7 @@
 #include <asm/system.h>
 #include <asm/io.h>
 #include <asm/irq.h>
+#include <linux/atomic.h>
 #if ALLOW_DMA
 #include <asm/dma.h>
 #endif
@@ -174,26 +175,32 @@ static char version[] __initdata =
    them to system IRQ numbers. This mapping is card specific and is set to
    the configuration of the Cirrus Eval board for this chip. */
 #if defined(CONFIG_MACH_IXDP2351)
+#define CS89x0_NONISA_IRQ
 static unsigned int netcard_portlist[] __used __initdata = {IXDP2351_VIRT_CS8900_BASE, 0};
 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2351_CS8900, 0, 0, 0};
 #elif defined(CONFIG_ARCH_IXDP2X01)
+#define CS89x0_NONISA_IRQ
 static unsigned int netcard_portlist[] __used __initdata = {IXDP2X01_CS8900_VIRT_BASE, 0};
 static unsigned int cs8900_irq_map[] = {IRQ_IXDP2X01_CS8900, 0, 0, 0};
 #elif defined(CONFIG_MACH_QQ2440)
+#define CS89x0_NONISA_IRQ
 #include <mach/qq2440.h>
 static unsigned int netcard_portlist[] __used __initdata = { QQ2440_CS8900_VIRT_BASE + 0x300, 0 };
 static unsigned int cs8900_irq_map[] = { QQ2440_CS8900_IRQ, 0, 0, 0 };
 #elif defined(CONFIG_MACH_MX31ADS)
+#define CS89x0_NONISA_IRQ
 #include <mach/board-mx31ads.h>
 static unsigned int netcard_portlist[] __used __initdata = {
         PBC_BASE_ADDRESS + PBC_CS8900A_IOBASE + 0x300, 0
 };
 static unsigned cs8900_irq_map[] = {EXPIO_INT_ENET_INT, 0, 0, 0};
 #else
+#ifndef CONFIG_CS89x0_PLATFORM
 static unsigned int netcard_portlist[] __used __initdata =
    { 0x300, 0x320, 0x340, 0x360, 0x200, 0x220, 0x240, 0x260, 0x280, 0x2a0, 0x2c0, 0x2e0, 0};
 static unsigned int cs8900_irq_map[] = {10,11,12,5};
 #endif
+#endif
 
 #if DEBUGGING
 static unsigned int net_debug = DEBUGGING;
@@ -236,11 +243,16 @@ struct net_local {
         unsigned char *end_dma_buff;    /* points to the end of the buffer */
         unsigned char *rx_dma_ptr;      /* points to the next packet  */
 #endif
+#ifdef CONFIG_CS89x0_PLATFORM
+        void __iomem *virt_addr;/* Virtual address for accessing the CS89x0. */
+        unsigned long phys_addr;/* Physical address for accessing the CS89x0. */
+        unsigned long size;     /* Length of CS89x0 memory region. */
+#endif
 };
 
 /* Index to functions, as function prototypes. */
 
-static int cs89x0_probe1(struct net_device *dev, int ioaddr, int modular);
+static int cs89x0_probe1(struct net_device *dev, unsigned long ioaddr, int modular);
 static int net_open(struct net_device *dev);
 static netdev_tx_t net_send_packet(struct sk_buff *skb, struct net_device *dev);
 static irqreturn_t net_interrupt(int irq, void *dev_id);
@@ -294,6 +306,7 @@ static int __init media_fn(char *str)
 __setup("cs89x0_media=", media_fn);
 
 
+#ifndef CONFIG_CS89x0_PLATFORM
 /* Check for a network adaptor of this type, and return '0' iff one exists.
    If dev->base_addr == 0, probe all likely locations.
    If dev->base_addr == 1, always return failure.
@@ -343,6 +356,7 @@ out:
         return ERR_PTR(err);
 }
 #endif
+#endif
 
 #if defined(CONFIG_MACH_IXDP2351)
 static u16
@@ -504,7 +518,7 @@ static const struct net_device_ops net_ops = {
  */
 
 static int __init
-cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
+cs89x0_probe1(struct net_device *dev, unsigned long ioaddr, int modular)
 {
         struct net_local *lp = netdev_priv(dev);
         static unsigned version_printed;
@@ -537,7 +551,7 @@ cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
         /* Grab the region so we can find another board if autoIRQ fails. */
         /* WTF is going on here? */
         if (!request_region(ioaddr & ~3, NETCARD_IO_EXTENT, DRV_NAME)) {
-                printk(KERN_ERR "%s: request_region(0x%x, 0x%x) failed\n",
+                printk(KERN_ERR "%s: request_region(0x%lx, 0x%x) failed\n",
                                 DRV_NAME, ioaddr, NETCARD_IO_EXTENT);
                 retval = -EBUSY;
                 goto out1;
@@ -549,7 +563,7 @@ cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
            will skip the test for the ADD_PORT. */
         if (ioaddr & 1) {
                 if (net_debug > 1)
-                        printk(KERN_INFO "%s: odd ioaddr 0x%x\n", dev->name, ioaddr);
+                        printk(KERN_INFO "%s: odd ioaddr 0x%lx\n", dev->name, ioaddr);
                 if ((ioaddr & 2) != 2)
                         if ((readword(ioaddr & ~3, ADD_PORT) & ADD_MASK) != ADD_SIG) {
                                 printk(KERN_ERR "%s: bad signature 0x%x\n",
@@ -560,13 +574,13 @@ cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
         }
 
         ioaddr &= ~3;
-        printk(KERN_DEBUG "PP_addr at %x[%x]: 0x%x\n",
+        printk(KERN_DEBUG "PP_addr at %lx[%x]: 0x%x\n",
                         ioaddr, ADD_PORT, readword(ioaddr, ADD_PORT));
         writeword(ioaddr, ADD_PORT, PP_ChipID);
 
         tmp = readword(ioaddr, DATA_PORT);
         if (tmp != CHIP_EISA_ID_SIG) {
-                printk(KERN_DEBUG "%s: incorrect signature at %x[%x]: 0x%x!="
+                printk(KERN_DEBUG "%s: incorrect signature at %lx[%x]: 0x%x!="
                         CHIP_EISA_ID_SIG_STR "\n",
                         dev->name, ioaddr, DATA_PORT, tmp);
                 retval = -ENODEV;
@@ -736,8 +750,9 @@ cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
                         dev->irq = i;
         } else {
                 i = lp->isa_config & INT_NO_MASK;
+#ifndef CONFIG_CS89x0_PLATFORM
                 if (lp->chip_type == CS8900) {
-#ifdef CONFIG_CS89x0_NONISA_IRQ
+#ifdef CS89x0_NONISA_IRQ
                         i = cs8900_irq_map[0];
 #else
                         /* Translate the IRQ using the IRQ mapping table. */
@@ -758,6 +773,7 @@ cs89x0_probe1(struct net_device *dev, int ioaddr, int modular)
                         }
 #endif
                 }
+#endif
                 if (!dev->irq)
                         dev->irq = i;
         }
@@ -1168,6 +1184,7 @@ write_irq(struct net_device *dev, int chip_type, int irq)
         int i;
 
         if (chip_type == CS8900) {
+#ifndef CONFIG_CS89x0_PLATFORM
                 /* Search the mapping table for the corresponding IRQ pin. */
                 for (i = 0; i != ARRAY_SIZE(cs8900_irq_map); i++)
                         if (cs8900_irq_map[i] == irq)
@@ -1175,6 +1192,10 @@ write_irq(struct net_device *dev, int chip_type, int irq)
                 /* Not found */
                 if (i == ARRAY_SIZE(cs8900_irq_map))
                         i = 3;
+#else
+                /* INTRQ0 pin is used for interrupt generation. */
+                i = 0;
+#endif
                 writereg(dev, PP_CS8900_ISAINT, i);
         } else {
                 writereg(dev, PP_CS8920_ISAINT, irq);
@@ -1228,7 +1249,7 @@ net_open(struct net_device *dev)
         }
         else
         {
-#ifndef CONFIG_CS89x0_NONISA_IRQ
+#if !defined(CS89x0_NONISA_IRQ) && !defined(CONFIG_CS89x0_PLATFORM)
                 if (((1 << dev->irq) & lp->irq_map) == 0) {
                         printk(KERN_ERR "%s: IRQ %d is not in our map of allowable IRQs, which is %x\n",
                                dev->name, dev->irq, lp->irq_map);
@@ -1746,7 +1767,7 @@ static int set_mac_address(struct net_device *dev, void *p)
         return 0;
 }
 
-#ifdef MODULE
+#if defined(MODULE) && !defined(CONFIG_CS89x0_PLATFORM)
 
 static struct net_device *dev_cs89x0;
 
@@ -1900,7 +1921,97 @@ cleanup_module(void)
         release_region(dev_cs89x0->base_addr, NETCARD_IO_EXTENT);
         free_netdev(dev_cs89x0);
 }
-#endif /* MODULE */
+#endif /* MODULE && !CONFIG_CS89x0_PLATFORM */
+
+#ifdef CONFIG_CS89x0_PLATFORM
+static int __init cs89x0_platform_probe(struct platform_device *pdev)
+{
+        struct net_device *dev = alloc_etherdev(sizeof(struct net_local));
+        struct net_local *lp;
+        struct resource *mem_res;
+        int err;
+
+        if (!dev)
+                return -ENOMEM;
+
+        lp = netdev_priv(dev);
+
+        mem_res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+        dev->irq = platform_get_irq(pdev, 0);
+        if (mem_res == NULL || dev->irq <= 0) {
+                dev_warn(&dev->dev, "memory/interrupt resource missing.\n");
+                err = -ENXIO;
+                goto free;
+        }
+
+        lp->phys_addr = mem_res->start;
+        lp->size = resource_size(mem_res);
+        if (!request_mem_region(lp->phys_addr, lp->size, DRV_NAME)) {
+                dev_warn(&dev->dev, "request_mem_region() failed.\n");
+                err = -EBUSY;
+                goto free;
+        }
+
+        lp->virt_addr = ioremap(lp->phys_addr, lp->size);
+        if (!lp->virt_addr) {
+                dev_warn(&dev->dev, "ioremap() failed.\n");
+                err = -ENOMEM;
+                goto release;
+        }
+
+        err = cs89x0_probe1(dev, (unsigned long)lp->virt_addr, 0);
+        if (err) {
+                dev_warn(&dev->dev, "no cs8900 or cs8920 detected.\n");
+                goto unmap;
+        }
+
+        platform_set_drvdata(pdev, dev);
+        return 0;
+
+unmap:
+        iounmap(lp->virt_addr);
+release:
+        release_mem_region(lp->phys_addr, lp->size);
+free:
+        free_netdev(dev);
+        return err;
+}
+
+static int cs89x0_platform_remove(struct platform_device *pdev)
+{
+        struct net_device *dev = platform_get_drvdata(pdev);
+        struct net_local *lp = netdev_priv(dev);
+
+        unregister_netdev(dev);
+        iounmap(lp->virt_addr);
+        release_mem_region(lp->phys_addr, lp->size);
+        free_netdev(dev);
+        return 0;
+}
+
+static struct platform_driver cs89x0_driver = {
+        .driver = {
+                .name   = DRV_NAME,
+                .owner  = THIS_MODULE,
+        },
+        .remove = cs89x0_platform_remove,
+};
+
+static int __init cs89x0_init(void)
+{
+        return platform_driver_probe(&cs89x0_driver, cs89x0_platform_probe);
+}
+
+module_init(cs89x0_init);
+
+static void __exit cs89x0_cleanup(void)
+{
+        platform_driver_unregister(&cs89x0_driver);
+}
+
+module_exit(cs89x0_cleanup);
+
+#endif /* CONFIG_CS89x0_PLATFORM */
 
 /*
  * Local variables: