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/*
* Copyright (C) 2010 Scott Nicholas <neutronscott@scottn.us>
* Copyright (C) 2012 Florian Fainelli <florian@openwrt.org>
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#include <linux/init.h>
#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/pci.h>
#include <linux/slab.h>
#include <linux/ioport.h>
#include <linux/amba/bus.h>
#include <linux/amba/serial.h>
#include <asm/reboot.h>
#include <asm/time.h>
#include <asm/addrspace.h>
#include <asm/bootinfo.h>
#include <asm/io.h>
#include <adm8668.h>
#define ADM8868_UBOOT_ENV 0x20000
#define ADM8868_UBOOT_WAN_MAC 0x5ac
#define ADM8868_UBOOT_LAN_MAC 0x404
static void adm8668_uart_set_mctrl(struct amba_device *dev,
void __iomem *base,
unsigned int mcrtl)
{
}
static struct amba_pl010_data adm8668_uart0_data = {
.set_mctrl = adm8668_uart_set_mctrl,
};
static struct amba_device adm8668_uart0_device = {
.dev = {
.init_name = "apb:uart0",
.platform_data = &adm8668_uart0_data,
},
.res = {
.start = ADM8668_UART0_BASE,
.end = ADM8668_UART0_BASE + 0xF,
.flags = IORESOURCE_MEM,
},
.irq = {
ADM8668_UART0_IRQ,
-1
},
.periphid = 0x0041010,
};
static struct resource eth0_resources[] = {
{
.start = ADM8668_LAN_BASE,
.end = ADM8668_LAN_BASE + 256,
.flags = IORESOURCE_MEM,
},
{
.start = ADM8668_LAN_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct tulip_platform_data eth0_pdata = {
.chip_id = ADM8668,
};
static struct platform_device adm8668_eth0_device = {
.name = "tulip",
.id = 0,
.resource = eth0_resources,
.num_resources = ARRAY_SIZE(eth0_resources),
.dev.platform_data = ð0_pdata,
};
static struct resource eth1_resources[] = {
{
.start = ADM8668_WAN_BASE,
.end = ADM8668_WAN_BASE + 256,
.flags = IORESOURCE_MEM,
},
{
.start = ADM8668_WAN_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct tulip_platform_data eth1_pdata = {
.chip_id = ADM8668,
};
static struct platform_device adm8668_eth1_device = {
.name = "tulip",
.id = 1,
.resource = eth1_resources,
.num_resources = ARRAY_SIZE(eth1_resources),
.dev.platform_data = ð1_pdata,
};
static struct resource usb_resources[] = {
{
.start = ADM8668_USB_BASE,
.end = ADM8668_USB_BASE + 0x1FFFFF,
.flags = IORESOURCE_MEM,
},
{
.start = ADM8668_USB_IRQ,
.end = ADM8668_USB_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct usb_ehci_pdata usb_pdata = {
.caps_offset = 0x100,
.has_tt = 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_usb_device,
};
static void adm8668_fetch_mac(int unit)
{
u8 *mac;
u32 offset;
struct tulip_platform_data *pdata;
switch (unit) {
case -1:
case 0:
offset = ADM8868_UBOOT_LAN_MAC;
pdata = ð0_pdata;
break;
case 1:
offset = ADM8868_UBOOT_WAN_MAC;
pdata = ð1_pdata;
break;
default:
pr_err("unsupported ethernet unit: %d\n", unit);
return;
}
mac = (u8 *)(KSEG1ADDR(ADM8668_SMEM1_BASE) + ADM8868_UBOOT_ENV + offset);
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 __init adm8668_devs_register(void)
{
int ret;
ret = amba_device_register(&adm8668_uart0_device, &iomem_resource);
if (ret)
panic("failed to register AMBA UART");
adm8668_fetch_mac(0);
adm8668_fetch_mac(1);
adm8668_ehci_workaround();
return platform_add_devices(adm8668_devs, ARRAY_SIZE(adm8668_devs));
}
arch_initcall(adm8668_devs_register);
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