MIPS: Alchemy: rewrite USB platform setup.

Use runtime CPU detection to setup all USB parts.
Remove the Au1200 OTG and UDC platform devices since there are no
drivers for them anyway.
Clean up the USB address mess in the au1000 header.

Signed-off-by: Manuel Lauss <manuel.lauss@googlemail.com>
To: Linux-MIPS <linux-mips@linux-mips.org>
Patchwork: https://patchwork.linux-mips.org/patch/2703/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 75 insertions, 108 deletions

diff --git a/arch/mips/alchemy/common/platform.c b/arch/mips/alchemy/common/platform.c
index 15d9b2f14262..910a3bde9a52 100644
--- a/arch/mips/alchemy/common/platform.c
+++ b/arch/mips/alchemy/common/platform.c
@@ -111,34 +111,84 @@ static void __init alchemy_setup_uarts(int ctype)
                 printk(KERN_INFO "Alchemy: failed to register UARTs\n");
 }
 
-/* OHCI (USB full speed host controller) */
-static struct resource au1xxx_usb_ohci_resources[] = {
-        [0] = {
-                .start          = USB_OHCI_BASE,
-                .end            = USB_OHCI_BASE + USB_OHCI_LEN - 1,
-                .flags          = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start          = FOR_PLATFORM_C_USB_HOST_INT,
-                .end            = FOR_PLATFORM_C_USB_HOST_INT,
-                .flags          = IORESOURCE_IRQ,
-        },
-};
 
-/* The dmamask must be set for OHCI to work */
-static u64 ohci_dmamask = DMA_BIT_MASK(32);
+/* The dmamask must be set for OHCI/EHCI to work */
+static u64 alchemy_ohci_dmamask = DMA_BIT_MASK(32);
+static u64 __maybe_unused alchemy_ehci_dmamask = DMA_BIT_MASK(32);
 
-static struct platform_device au1xxx_usb_ohci_device = {
-        .name           = "au1xxx-ohci",
-        .id             = 0,
-        .dev = {
-                .dma_mask               = &ohci_dmamask,
-                .coherent_dma_mask      = DMA_BIT_MASK(32),
-        },
-        .num_resources  = ARRAY_SIZE(au1xxx_usb_ohci_resources),
-        .resource       = au1xxx_usb_ohci_resources,
+static unsigned long alchemy_ohci_data[][2] __initdata = {
+        [ALCHEMY_CPU_AU1000] = { AU1000_USB_OHCI_PHYS_ADDR, AU1000_USB_HOST_INT },
+        [ALCHEMY_CPU_AU1500] = { AU1000_USB_OHCI_PHYS_ADDR, AU1500_USB_HOST_INT },
+        [ALCHEMY_CPU_AU1100] = { AU1000_USB_OHCI_PHYS_ADDR, AU1100_USB_HOST_INT },
+        [ALCHEMY_CPU_AU1550] = { AU1550_USB_OHCI_PHYS_ADDR, AU1550_USB_HOST_INT },
+        [ALCHEMY_CPU_AU1200] = { AU1200_USB_OHCI_PHYS_ADDR, AU1200_USB_INT },
+};
+
+static unsigned long alchemy_ehci_data[][2] __initdata = {
+        [ALCHEMY_CPU_AU1200] = { AU1200_USB_EHCI_PHYS_ADDR, AU1200_USB_INT },
 };
 
+static int __init _new_usbres(struct resource **r, struct platform_device **d)
+{
+        *r = kzalloc(sizeof(struct resource) * 2, GFP_KERNEL);
+        if (!*r)
+                return -ENOMEM;
+        *d = kzalloc(sizeof(struct platform_device), GFP_KERNEL);
+        if (!*d) {
+                kfree(*r);
+                return -ENOMEM;
+        }
+
+        (*d)->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+        (*d)->num_resources = 2;
+        (*d)->resource = *r;
+
+        return 0;
+}
+
+static void __init alchemy_setup_usb(int ctype)
+{
+        struct resource *res;
+        struct platform_device *pdev;
+
+        /* setup OHCI0.  Every variant has one */
+        if (_new_usbres(&res, &pdev))
+                return;
+
+        res[0].start = alchemy_ohci_data[ctype][0];
+        res[0].end = res[0].start + 0x100 - 1;
+        res[0].flags = IORESOURCE_MEM;
+        res[1].start = alchemy_ohci_data[ctype][1];
+        res[1].end = res[1].start;
+        res[1].flags = IORESOURCE_IRQ;
+        pdev->name = "au1xxx-ohci";
+        pdev->id = 0;
+        pdev->dev.dma_mask = &alchemy_ohci_dmamask;
+
+        if (platform_device_register(pdev))
+                printk(KERN_INFO "Alchemy USB: cannot add OHCI0\n");
+
+
+        /* setup EHCI0: Au1200 */
+        if (ctype == ALCHEMY_CPU_AU1200) {
+                if (_new_usbres(&res, &pdev))
+                        return;
+
+                res[0].start = alchemy_ehci_data[ctype][0];
+                res[0].end = res[0].start + 0x100 - 1;
+                res[0].flags = IORESOURCE_MEM;
+                res[1].start = alchemy_ehci_data[ctype][1];
+                res[1].end = res[1].start;
+                res[1].flags = IORESOURCE_IRQ;
+                pdev->name = "au1xxx-ehci";
+                pdev->id = 0;
+                pdev->dev.dma_mask = &alchemy_ehci_dmamask;
+
+                if (platform_device_register(pdev))
+                        printk(KERN_INFO "Alchemy USB: cannot add EHCI0\n");
+        }
+}
+
 /*** AU1100 LCD controller ***/
 
 #ifdef CONFIG_FB_AU1100
@@ -170,86 +220,6 @@ static struct platform_device au1100_lcd_device = {
 #endif
 
 #ifdef CONFIG_SOC_AU1200
-/* EHCI (USB high speed host controller) */
-static struct resource au1xxx_usb_ehci_resources[] = {
-        [0] = {
-                .start          = USB_EHCI_BASE,
-                .end            = USB_EHCI_BASE + USB_EHCI_LEN - 1,
-                .flags          = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start          = AU1200_USB_INT,
-                .end            = AU1200_USB_INT,
-                .flags          = IORESOURCE_IRQ,
-        },
-};
-
-static u64 ehci_dmamask = DMA_BIT_MASK(32);
-
-static struct platform_device au1xxx_usb_ehci_device = {
-        .name           = "au1xxx-ehci",
-        .id             = 0,
-        .dev = {
-                .dma_mask               = &ehci_dmamask,
-                .coherent_dma_mask      = DMA_BIT_MASK(32),
-        },
-        .num_resources  = ARRAY_SIZE(au1xxx_usb_ehci_resources),
-        .resource       = au1xxx_usb_ehci_resources,
-};
-
-/* Au1200 UDC (USB gadget controller) */
-static struct resource au1xxx_usb_gdt_resources[] = {
-        [0] = {
-                .start          = USB_UDC_BASE,
-                .end            = USB_UDC_BASE + USB_UDC_LEN - 1,
-                .flags          = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start          = AU1200_USB_INT,
-                .end            = AU1200_USB_INT,
-                .flags          = IORESOURCE_IRQ,
-        },
-};
-
-static u64 udc_dmamask = DMA_BIT_MASK(32);
-
-static struct platform_device au1xxx_usb_gdt_device = {
-        .name           = "au1xxx-udc",
-        .id             = 0,
-        .dev = {
-                .dma_mask               = &udc_dmamask,
-                .coherent_dma_mask      = DMA_BIT_MASK(32),
-        },
-        .num_resources  = ARRAY_SIZE(au1xxx_usb_gdt_resources),
-        .resource       = au1xxx_usb_gdt_resources,
-};
-
-/* Au1200 UOC (USB OTG controller) */
-static struct resource au1xxx_usb_otg_resources[] = {
-        [0] = {
-                .start          = USB_UOC_BASE,
-                .end            = USB_UOC_BASE + USB_UOC_LEN - 1,
-                .flags          = IORESOURCE_MEM,
-        },
-        [1] = {
-                .start          = AU1200_USB_INT,
-                .end            = AU1200_USB_INT,
-                .flags          = IORESOURCE_IRQ,
-        },
-};
-
-static u64 uoc_dmamask = DMA_BIT_MASK(32);
-
-static struct platform_device au1xxx_usb_otg_device = {
-        .name           = "au1xxx-uoc",
-        .id             = 0,
-        .dev = {
-                .dma_mask               = &uoc_dmamask,
-                .coherent_dma_mask      = DMA_BIT_MASK(32),
-        },
-        .num_resources  = ARRAY_SIZE(au1xxx_usb_otg_resources),
-        .resource       = au1xxx_usb_otg_resources,
-};
 
 static struct resource au1200_lcd_resources[] = {
         [0] = {
@@ -534,14 +504,10 @@ static void __init alchemy_setup_macs(int ctype)
 }
 
 static struct platform_device *au1xxx_platform_devices[] __initdata = {
-        &au1xxx_usb_ohci_device,
 #ifdef CONFIG_FB_AU1100
         &au1100_lcd_device,
 #endif
 #ifdef CONFIG_SOC_AU1200
-        &au1xxx_usb_ehci_device,
-        &au1xxx_usb_gdt_device,
-        &au1xxx_usb_otg_device,
         &au1200_lcd_device,
         &au1200_mmc0_device,
 #ifndef CONFIG_MIPS_DB1200
@@ -559,6 +525,7 @@ static int __init au1xxx_platform_init(void)
 
         alchemy_setup_uarts(ctype);
         alchemy_setup_macs(ctype);
+        alchemy_setup_usb(ctype);
 
         err = platform_add_devices(au1xxx_platform_devices,
                                    ARRAY_SIZE(au1xxx_platform_devices));