179 lines
4.7 KiB
C
179 lines
4.7 KiB
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 <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[] = {
|
||
|
[0] = {
|
||
|
/* .start and .end fields are filled dynamically */
|
||
|
.flags = IORESOURCE_MEM,
|
||
|
},
|
||
|
[1] = {
|
||
|
.start = ATH79_MISC_IRQ_OHCI,
|
||
|
.end = ATH79_MISC_IRQ_OHCI,
|
||
|
.flags = IORESOURCE_IRQ,
|
||
|
},
|
||
|
};
|
||
|
|
||
|
static u64 ath79_ohci_dmamask = DMA_BIT_MASK(32);
|
||
|
static struct platform_device ath79_ohci_device = {
|
||
|
.name = "ath79-ohci",
|
||
|
.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),
|
||
|
},
|
||
|
};
|
||
|
|
||
|
static struct resource ath79_ehci_resources[] = {
|
||
|
[0] = {
|
||
|
/* .start and .end fields are filled dynamically */
|
||
|
.flags = IORESOURCE_MEM,
|
||
|
},
|
||
|
[1] = {
|
||
|
.start = ATH79_CPU_IRQ_USB,
|
||
|
.end = ATH79_CPU_IRQ_USB,
|
||
|
.flags = IORESOURCE_IRQ,
|
||
|
},
|
||
|
};
|
||
|
|
||
|
static u64 ath79_ehci_dmamask = DMA_BIT_MASK(32);
|
||
|
static struct platform_device ath79_ehci_device = {
|
||
|
.name = "ath79-ehci",
|
||
|
.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),
|
||
|
},
|
||
|
};
|
||
|
|
||
|
#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_ohci_resources[0].start = AR71XX_OHCI_BASE;
|
||
|
ath79_ohci_resources[0].end = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1;
|
||
|
platform_device_register(&ath79_ohci_device);
|
||
|
|
||
|
ath79_ehci_resources[0].start = AR71XX_EHCI_BASE;
|
||
|
ath79_ehci_resources[0].end = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1;
|
||
|
ath79_ehci_device.name = "ar71xx-ehci";
|
||
|
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_ohci_resources[0].start = AR7240_OHCI_BASE;
|
||
|
ath79_ohci_resources[0].end = AR7240_OHCI_BASE + AR7240_OHCI_SIZE - 1;
|
||
|
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_ehci_resources[0].start = AR724X_EHCI_BASE;
|
||
|
ath79_ehci_resources[0].end = AR724X_EHCI_BASE + AR724X_EHCI_SIZE - 1;
|
||
|
ath79_ehci_device.name = "ar724x-ehci";
|
||
|
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_ehci_resources[0].start = AR913X_EHCI_BASE;
|
||
|
ath79_ehci_resources[0].end = AR913X_EHCI_BASE + AR913X_EHCI_SIZE - 1;
|
||
|
ath79_ehci_device.name = "ar913x-ehci";
|
||
|
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
|
||
|
BUG();
|
||
|
}
|