- 根目录:
- arch
- mips
- ath79
- dev-usb.c
/*
* 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 u64 ath79_usb_dmamask = DMA_BIT_MASK(32);
static struct usb_ohci_pdata ath79_ohci_pdata = {
};
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 void __init ath79_usb_register(const char *name, int id,
unsigned long base, unsigned long size,
int irq, const void *data,
size_t data_size)
{
struct resource res[2];
struct platform_device *pdev;
memset(res, 0, sizeof(res));
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;
pdev = platform_device_register_resndata(NULL, name, id,
res, ARRAY_SIZE(res),
data, data_size);
if (IS_ERR(pdev)) {
pr_err("ath79: unable to register USB at %08lx, err=%d\n",
base, (int) PTR_ERR(pdev));
return;
}
pdev->dev.dma_mask = &ath79_usb_dmamask;
pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
}
#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_register("ohci-platform", -1,
AR71XX_OHCI_BASE, AR71XX_OHCI_SIZE,
ATH79_MISC_IRQ(6),
&ath79_ohci_pdata, sizeof(ath79_ohci_pdata));
ath79_usb_register("ehci-platform", -1,
AR71XX_EHCI_BASE, AR71XX_EHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ehci_pdata_v1, sizeof(ath79_ehci_pdata_v1));
}
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_register("ohci-platform", -1,
AR7240_OHCI_BASE, AR7240_OHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ohci_pdata, sizeof(ath79_ohci_pdata));
}
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_register("ehci-platform", -1,
AR724X_EHCI_BASE, AR724X_EHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
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_register("ehci-platform", -1,
AR913X_EHCI_BASE, AR913X_EHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
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_register("ehci-platform", -1,
AR933X_EHCI_BASE, AR933X_EHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
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_register("ehci-platform", -1,
AR934X_EHCI_BASE, AR934X_EHCI_SIZE,
ATH79_CPU_IRQ(3),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
static void __init qca955x_usb_setup(void)
{
ath79_usb_register("ehci-platform", 0,
QCA955X_EHCI0_BASE, QCA955X_EHCI_SIZE,
ATH79_IP3_IRQ(0),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
ath79_usb_register("ehci-platform", 1,
QCA955X_EHCI1_BASE, QCA955X_EHCI_SIZE,
ATH79_IP3_IRQ(1),
&ath79_ehci_pdata_v2, sizeof(ath79_ehci_pdata_v2));
}
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 if (soc_is_qca955x())
qca955x_usb_setup();
else
BUG();
}