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/*
* 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 high/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 ar7241_usb_setup(void)
{
ar71xx_device_start(AR724X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ar71xx_device_start(AR724X_RESET_USB_HOST);
mdelay(10);
ar71xx_device_start(AR724X_RESET_USB_PHY);
mdelay(10);
ar71xx_ehci_data.is_ar91xx = 1;
ar71xx_ehci_device.resource = ar7240_ohci_resources;
ar71xx_ehci_device.num_resources = ARRAY_SIZE(ar7240_ohci_resources);
platform_device_register(&ar71xx_ehci_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);
}
static void __init ar933x_usb_setup(void)
{
ar71xx_device_reset_rmw(0, AR933X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ar71xx_device_reset_rmw(AR933X_RESET_USB_HOST,
AR933X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ar71xx_device_reset_rmw(AR933X_RESET_USB_PHY,
AR933X_RESET_USBSUS_OVERRIDE);
mdelay(10);
ar71xx_ehci_data.is_ar91xx = 1;
platform_device_register(&ar71xx_ehci_device);
}
static void __init ar934x_usb_setup(void)
{
u32 bootstrap;
bootstrap = ar71xx_reset_rr(AR934X_RESET_REG_BOOTSTRAP);
if (bootstrap & AR934X_BOOTSTRAP_USB_MODE_DEVICE)
return;
ar71xx_device_stop(AR934X_RESET_USBSUS_OVERRIDE);
udelay(1000);
ar71xx_device_start(AR934X_RESET_USB_PHY);
udelay(1000);
ar71xx_device_start(AR934X_RESET_USB_PHY_ANALOG);
udelay(1000);
ar71xx_device_start(AR934X_RESET_USB_HOST);
udelay(1000);
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_AR7241:
case AR71XX_SOC_AR7242:
ar7241_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;
case AR71XX_SOC_AR9330:
case AR71XX_SOC_AR9331:
ar933x_usb_setup();
break;
case AR71XX_SOC_AR9341:
case AR71XX_SOC_AR9342:
case AR71XX_SOC_AR9344:
ar934x_usb_setup();
break;
default:
BUG();
}
}
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