Cleaned up AMD Au1200 IDE driver:

- converted to platform bus
- removed pci dependencies
- removed virt_to_phys/phys_to_virt calls
    
System now can root off of a disk.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644

2 files changed, 36 insertions, 2 deletions

diff --git a/arch/mips/au1000/common/dbdma.c b/arch/mips/au1000/common/dbdma.c
index 8f78c2fe7cf5..eb5803aed91b 100644
--- a/arch/mips/au1000/common/dbdma.c
+++ b/arch/mips/au1000/common/dbdma.c
@@ -197,6 +197,12 @@ find_dbdev_id (u32 id)
         return NULL;
 }
 
+void * au1xxx_ddma_get_nextptr_virt(au1x_ddma_desc_t *dp)
+{
+        return phys_to_virt(DSCR_GET_NXTPTR(dp->dscr_nxtptr));
+}
+EXPORT_SYMBOL(au1xxx_ddma_get_nextptr_virt);
+
 u32
 au1xxx_ddma_add_device(dbdev_tab_t *dev)
 {
diff --git a/arch/mips/au1000/common/platform.c b/arch/mips/au1000/common/platform.c
index 0c3fd726c3d6..4aca18f0e290 100644
--- a/arch/mips/au1000/common/platform.c
+++ b/arch/mips/au1000/common/platform.c
@@ -12,7 +12,7 @@
 #include <linux/init.h>
 #include <linux/resource.h>
 
-#include <asm/mach-au1x00/au1000.h>
+#include <asm/mach-au1x00/au1xxx.h>
 
 /* OHCI (USB full speed host controller) */
 static struct resource au1xxx_usb_ohci_resources[] = {
@@ -154,7 +154,6 @@ static struct platform_device au1xxx_usb_otg_device = {
         .resource       = au1xxx_usb_otg_resources,
 };
 
-/*** AU1200 LCD controller ***/
 static struct resource au1200_lcd_resources[] = {
         [0] = {
                 .start          = LCD_PHYS_ADDR,
@@ -168,6 +167,19 @@ static struct resource au1200_lcd_resources[] = {
         }
 };
 
+static struct resource au1200_ide0_resources[] = {
+        [0] = {
+                .start          = AU1XXX_ATA_PHYS_ADDR,
+                .end            = AU1XXX_ATA_PHYS_ADDR + AU1XXX_ATA_PHYS_LEN,
+                .flags          = IORESOURCE_MEM,
+        },
+        [1] = {
+                .start          = AU1XXX_ATA_INT,
+                .end            = AU1XXX_ATA_INT,
+                .flags          = IORESOURCE_IRQ,
+        }
+};
+
 static u64 au1200_lcd_dmamask = ~(u32)0;
 
 static struct platform_device au1200_lcd_device = {
@@ -180,6 +192,21 @@ static struct platform_device au1200_lcd_device = {
         .num_resources  = ARRAY_SIZE(au1200_lcd_resources),
         .resource       = au1200_lcd_resources,
 };
+
+
+static u64 ide0_dmamask = ~(u32)0;
+
+static struct platform_device au1200_ide0_device = {
+        .name           = "au1200-ide",
+        .id             = 0,
+        .dev = {
+                .dma_mask               = &ide0_dmamask,
+                .coherent_dma_mask      = 0xffffffff,
+        },
+        .num_resources = ARRAY_SIZE(au1200_ide0_resources),
+        .resource       = au1200_ide0_resources,
+};
+
 #endif
 
 static struct platform_device *au1xxx_platform_devices[] __initdata = {
@@ -194,6 +221,7 @@ static struct platform_device *au1xxx_platform_devices[] __initdata = {
         &au1xxx_usb_gdt_device,
         &au1xxx_usb_otg_device,
         &au1200_lcd_device,
+        &au1200_ide0_device,
 #endif
 };