/*
* Atheros AR7XXX/AR9XXX USB Host Controller device
*
* Copyright (C) 2008-2011 Gabor Juhos <juhosg@openwrt.org>
* Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
*
* Parts of this file are based on Atheros' 2.6.15 BSP
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*/
#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/irq.h>
#include <linux/dma-mapping.h>
#include <linux/platform_device.h>
#include <linux/usb/ehci_pdriver.h>
#include <linux/usb/ohci_pdriver.h>
#include <asm/mach-ath79/ath79.h>
#include <asm/mach-ath79/ar71xx_regs.h>
#include "common.h"
#include "dev-usb.h"
static struct resource ath79_ohci_resources[2];
static u64 ath79_ohci_dmamask = DMA_BIT_MASK(32);
static struct usb_ohci_pdata ath79_ohci_pdata = {
};
static struct platform_device ath79_ohci_device = {
.name = "ohci-platform",
.id = -1,
.resource = ath79_ohci_resources,
.num_resources = ARRAY_SIZE(ath79_ohci_resources),
.dev = {
.dma_mask = &ath79_ohci_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
.platform_data = &ath79_ohci_pdata,
},
};
static struct resource ath79_ehci_resources[2];
static u64 ath79_ehci_dmamask = DMA_BIT_MASK(32);
static struct usb_ehci_pdata ath79_ehci_pdata_v1 = {
.has_synopsys_hc_bug = 1,
};
static struct usb_ehci_pdata ath79_ehci_pdata_v2 = {
.caps_offset = 0x100,
.has_tt = 1,
};
static struct platform_device ath79_ehci_device = {
.name = "ehci-platform",
.id = -1,
.resource = ath79_ehci_resources,
.num_resources = ARRAY_SIZE(ath79_ehci_resources),
.dev = {
.dma_mask = &ath79_ehci_dmamask,
.coherent_dma_mask = DMA_BIT_MASK(32),
},
};
static void __init ath79_usb_init_resource(struct resource res[2],
unsigned long base,
unsigned long size,
int irq)
{
res[0].flags = IORESOURCE_MEM;
res[0].start = base;
res[0].end = base + size - 1;
res[1].flags = IORESOURCE_IRQ;
res[1].start = irq;
res[1].end = irq;
}
#define AR71XX_USB_RESET_MASK (AR71XX_RESET_USB_HOST | \
AR71XX_RESET_USB_PHY | \
AR71XX_RESET_USB_OHCI_DLL)
static void __init ath79_usb_setup(void)
{
void __iomem *usb_ctrl_base;
ath79_device_reset_set(AR71XX_USB_RESET_MASK);
mdelay(1000);
ath79_device_reset_clear(AR71XX_USB_RESET_MASK);
usb_ctrl_base = ioremap(AR71XX_USB_CTRL_BASE, AR71XX_USB_CTRL_SIZE);
/* Turning on the Buff and Desc swap bits */
__raw_writel(0xf0000, usb_ctrl_base + AR71XX_USB_CTRL_REG_CONFIG);
/* WAR for HW bug. Here it adjusts the duration between two SOFS */
__raw_writel(0x20c00, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
iounmap(usb_ctrl_base);
mdelay(900);
ath79_usb_init_resource(ath79_ohci_resources, AR71XX_OHCI_BASE,
AR71XX_OHCI_SIZE, ATH79_MISC_IRQ_OHCI);
platform_device_register(&ath79_ohci_device);
ath79_usb_init_resource(ath79_ehci_resources, AR71XX_EHCI_BASE,
AR71XX_EHCI_SIZE, ATH79_CPU_IRQ_USB);
ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v1;
platform_device_register(&ath79_ehci_device);
}
static void __init ar7240_usb_setup(void)
{
void __iomem *usb_ctrl_base;
ath79_device_reset_clear(AR7240_RESET_OHCI_DLL);
ath79_device_reset_set(AR7240_RESET_USB_HOST);
mdelay(1000);
ath79_device_reset_set(AR7240_RESET_OHCI_DLL);
ath79_device_reset_clear(AR7240_RESET_USB_HOST);
usb_ctrl_base = ioremap(AR7240_USB_CTRL_BASE, AR7240_USB_CTRL_SIZE);
/* WAR for HW bug. Here it adjusts the duration between two SOFS */
__raw_writel(0x3, usb_ctrl_base + AR71XX_USB_CTRL_REG_FLADJ);
iounmap(usb_ctrl_base);
ath79_usb_init_resource(ath79_ohci_resources, AR7240_OHCI_BASE,
AR7240_OHCI_SIZE, ATH79_CPU_IRQ_USB);
platform_device_register(&ath79_ohci_device);
}
static void __init ar724x_usb_setup(void)
{
ath79_device_reset_set(AR724X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ath79_device_reset_clear(AR724X_RESET_USB_HOST);
mdelay(10);
ath79_device_reset_clear(AR724X_RESET_USB_PHY);
mdelay(10);
ath79_usb_init_resource(ath79_ehci_resources, AR724X_EHCI_BASE,
AR724X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
platform_device_register(&ath79_ehci_device);
}
static void __init ar913x_usb_setup(void)
{
ath79_device_reset_set(AR913X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ath79_device_reset_clear(AR913X_RESET_USB_HOST);
mdelay(10);
ath79_device_reset_clear(AR913X_RESET_USB_PHY);
mdelay(10);
ath79_usb_init_resource(ath79_ehci_resources, AR913X_EHCI_BASE,
AR913X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
platform_device_register(&ath79_ehci_device);
}
static void __init ar933x_usb_setup(void)
{
ath79_device_reset_set(AR933X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ath79_device_reset_clear(AR933X_RESET_USB_HOST);
mdelay(10);
ath79_device_reset_clear(AR933X_RESET_USB_PHY);
mdelay(10);
ath79_usb_init_resource(ath79_ehci_resources, AR933X_EHCI_BASE,
AR933X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
platform_device_register(&ath79_ehci_device);
}
static void __init ar934x_usb_setup(void)
{
u32 bootstrap;
bootstrap = ath79_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
return;
ath79_device_reset_set(AR934X_RESET_USBSUS_OVERRIDE);
udelay(1000);
ath79_device_reset_clear(AR934X_RESET_USB_PHY);
udelay(1000);
ath79_device_reset_clear(AR934X_RESET_USB_PHY_ANALOG);
udelay(1000);
ath79_device_reset_clear(AR934X_RESET_USB_HOST);
udelay(1000);
ath79_usb_init_resource(ath79_ehci_resources, AR934X_EHCI_BASE,
AR934X_EHCI_SIZE, ATH79_CPU_IRQ_USB);
ath79_ehci_device.dev.platform_data = &ath79_ehci_pdata_v2;
platform_device_register(&ath79_ehci_device);
}
void __init ath79_register_usb(void)
{
if (soc_is_ar71xx())
ath79_usb_setup();
else if (soc_is_ar7240())
ar7240_usb_setup();
else if (soc_is_ar7241() || soc_is_ar7242())
ar724x_usb_setup();
else if (soc_is_ar913x())
ar913x_usb_setup();
else if (soc_is_ar933x())
ar933x_usb_setup();
else if (soc_is_ar934x())
ar934x_usb_setup();
else
BUG();
}
