174 lines
4.0 KiB
C
174 lines
4.0 KiB
C
/*
|
|
* Atheros AR71xx USB host device support
|
|
*
|
|
* Copyright (C) 2008-2009 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/dma-mapping.h>
|
|
#include <linux/platform_device.h>
|
|
|
|
#include <asm/mach-ar71xx/ar71xx.h>
|
|
#include <asm/mach-ar71xx/platform.h>
|
|
|
|
#include "dev-usb.h"
|
|
|
|
/*
|
|
* OHCI (USB full speed host controller)
|
|
*/
|
|
static struct resource ar71xx_ohci_resources[] = {
|
|
[0] = {
|
|
.start = AR71XX_OHCI_BASE,
|
|
.end = AR71XX_OHCI_BASE + AR71XX_OHCI_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AR71XX_MISC_IRQ_OHCI,
|
|
.end = AR71XX_MISC_IRQ_OHCI,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource ar7240_ohci_resources[] = {
|
|
[0] = {
|
|
.start = AR7240_OHCI_BASE,
|
|
.end = AR7240_OHCI_BASE + AR7240_OHCI_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AR71XX_CPU_IRQ_USB,
|
|
.end = AR71XX_CPU_IRQ_USB,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static u64 ar71xx_ohci_dmamask = DMA_BIT_MASK(32);
|
|
static struct platform_device ar71xx_ohci_device = {
|
|
.name = "ar71xx-ohci",
|
|
.id = -1,
|
|
.resource = ar71xx_ohci_resources,
|
|
.num_resources = ARRAY_SIZE(ar71xx_ohci_resources),
|
|
.dev = {
|
|
.dma_mask = &ar71xx_ohci_dmamask,
|
|
.coherent_dma_mask = DMA_BIT_MASK(32),
|
|
},
|
|
};
|
|
|
|
/*
|
|
* EHCI (USB full speed host controller)
|
|
*/
|
|
static struct resource ar71xx_ehci_resources[] = {
|
|
[0] = {
|
|
.start = AR71XX_EHCI_BASE,
|
|
.end = AR71XX_EHCI_BASE + AR71XX_EHCI_SIZE - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = AR71XX_CPU_IRQ_USB,
|
|
.end = AR71XX_CPU_IRQ_USB,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static u64 ar71xx_ehci_dmamask = DMA_BIT_MASK(32);
|
|
static struct ar71xx_ehci_platform_data ar71xx_ehci_data;
|
|
|
|
static struct platform_device ar71xx_ehci_device = {
|
|
.name = "ar71xx-ehci",
|
|
.id = -1,
|
|
.resource = ar71xx_ehci_resources,
|
|
.num_resources = ARRAY_SIZE(ar71xx_ehci_resources),
|
|
.dev = {
|
|
.dma_mask = &ar71xx_ehci_dmamask,
|
|
.coherent_dma_mask = DMA_BIT_MASK(32),
|
|
.platform_data = &ar71xx_ehci_data,
|
|
},
|
|
};
|
|
|
|
#define AR71XX_USB_RESET_MASK \
|
|
(RESET_MODULE_USB_HOST | RESET_MODULE_USB_PHY \
|
|
| RESET_MODULE_USB_OHCI_DLL)
|
|
|
|
#define AR7240_USB_RESET_MASK \
|
|
(RESET_MODULE_USB_HOST | RESET_MODULE_USB_OHCI_DLL_7240)
|
|
|
|
static void __init ar71xx_usb_setup(void)
|
|
{
|
|
ar71xx_device_stop(AR71XX_USB_RESET_MASK);
|
|
mdelay(1000);
|
|
ar71xx_device_start(AR71XX_USB_RESET_MASK);
|
|
|
|
/* Turning on the Buff and Desc swap bits */
|
|
ar71xx_usb_ctrl_wr(USB_CTRL_REG_CONFIG, 0xf0000);
|
|
|
|
/* WAR for HW bug. Here it adjusts the duration between two SOFS */
|
|
ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x20c00);
|
|
|
|
mdelay(900);
|
|
|
|
platform_device_register(&ar71xx_ohci_device);
|
|
platform_device_register(&ar71xx_ehci_device);
|
|
}
|
|
|
|
static void __init ar7240_usb_setup(void)
|
|
{
|
|
ar71xx_device_stop(AR7240_USB_RESET_MASK);
|
|
mdelay(1000);
|
|
ar71xx_device_start(AR7240_USB_RESET_MASK);
|
|
|
|
/* WAR for HW bug. Here it adjusts the duration between two SOFS */
|
|
ar71xx_usb_ctrl_wr(USB_CTRL_REG_FLADJ, 0x3);
|
|
|
|
ar71xx_ohci_device.resource = ar7240_ohci_resources;
|
|
ar71xx_ohci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources);
|
|
|
|
platform_device_register(&ar71xx_ohci_device);
|
|
}
|
|
|
|
static void __init ar91xx_usb_setup(void)
|
|
{
|
|
ar71xx_device_stop(RESET_MODULE_USBSUS_OVERRIDE);
|
|
mdelay(10);
|
|
|
|
ar71xx_device_start(RESET_MODULE_USB_HOST);
|
|
mdelay(10);
|
|
|
|
ar71xx_device_start(RESET_MODULE_USB_PHY);
|
|
mdelay(10);
|
|
|
|
ar71xx_ehci_data.is_ar91xx = 1;
|
|
platform_device_register(&ar71xx_ehci_device);
|
|
}
|
|
|
|
void __init ar71xx_add_device_usb(void)
|
|
{
|
|
switch (ar71xx_soc) {
|
|
case AR71XX_SOC_AR7240:
|
|
ar7240_usb_setup();
|
|
break;
|
|
|
|
case AR71XX_SOC_AR7130:
|
|
case AR71XX_SOC_AR7141:
|
|
case AR71XX_SOC_AR7161:
|
|
ar71xx_usb_setup();
|
|
break;
|
|
|
|
case AR71XX_SOC_AR9130:
|
|
case AR71XX_SOC_AR9132:
|
|
ar91xx_usb_setup();
|
|
break;
|
|
|
|
default:
|
|
BUG();
|
|
}
|
|
}
|