add support for on-board EHCI controller

[openwrt/staging/chunkeey.git] / target / linux / adm8668 / files / arch / mips / adm8668 / platform.c

diff --git a/target/linux/adm8668/files/arch/mips/adm8668/platform.c b/target/linux/adm8668/files/arch/mips/adm8668/platform.c
index dc0fd91a338228a18918762cbd2989028698ebf7..71f3eca1422b482036033c9658ab23a1b0f2e88b 100644 (file)
--- a/target/linux/adm8668/files/arch/mips/adm8668/platform.c
+++ b/target/linux/adm8668/files/arch/mips/adm8668/platform.c
@@ -13,6 +13,7 @@
 #include <linux/kernel.h>
 #include <linux/platform_device.h>
 #include <linux/platform_data/tulip.h>
+#include <linux/usb/ehci_pdriver.h>
 #include <linux/mtd/physmap.h>
 #include <linux/mtd/partitions.h>
 #include <linux/pci.h>
@@ -130,10 +131,38 @@ static struct platform_device adm8668_nor_device = {
        .dev.platform_data = &nor_flash_data,
 };
 
+static struct resource usb_resources[] = {
+       {
+               .start  = ADM8668_USB_BASE,
+               .end    = ADM8668_USB_BASE + 0x1FFFFF,
+               .flags  = IORESOURCE_MEM,
+       },
+       {
+               .start  = INT_LVL_USB,
+               .end    = INT_LVL_USB,
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+static struct usb_ehci_pdata usb_pdata = {
+       .caps_offset    = 0x100,
+       .has_tt         = 1,
+       .port_power_off = 1,
+};
+
+static struct platform_device adm8668_usb_device = {
+       .name           = "ehci-platform",
+       .id             = -1,
+       .resource       = usb_resources,
+       .num_resources  = ARRAY_SIZE(usb_resources),
+       .dev.platform_data = &usb_pdata,
+};
+
 static struct platform_device *adm8668_devs[] = {
        &adm8668_eth0_device,
        &adm8668_eth1_device,
        &adm8668_nor_device,
+       &adm8668_usb_device,
 };
 
 static void adm8668_fetch_mac(int unit)
@@ -162,6 +191,21 @@ static void adm8668_fetch_mac(int unit)
        memcpy(pdata->mac, mac, sizeof(pdata->mac));
 }
 
+static void adm8668_ehci_workaround(void)
+{
+       u32 chipid;
+
+       chipid = ADM8668_CONFIG_REG(ADM8668_CR0);
+       ADM8668_CONFIG_REG(ADM8668_CR66) = 0x0C1600D9;
+
+       if (chipid == 0x86880001)
+               return;
+
+       ADM8668_CONFIG_REG(ADM8668_CR66) &= ~(3 << 20);
+       ADM8668_CONFIG_REG(ADM8668_CR66) |= (1 << 20);
+       pr_info("ADM8668: applied USB workaround\n");
+}
+
 
 int __devinit adm8668_devs_register(void)
 {
@@ -173,6 +217,7 @@ int __devinit adm8668_devs_register(void)
 
        adm8668_fetch_mac(0);
        adm8668_fetch_mac(1);
+       adm8668_ehci_workaround();
 
        return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs));
 }