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/***************************************************************************
* __________ __ ___.
* Open \______ \ ____ ____ | | _\_ |__ _______ ___
* Source | _// _ \_/ ___\| |/ /| __ \ / _ \ \/ /
* Jukebox | | ( <_> ) \___| < | \_\ ( <_> > < <
* Firmware |____|_ /\____/ \___ >__|_ \|___ /\____/__/\_ \
* \/ \/ \/ \/ \/
* $Id$
*
* Copyright (C) 2002 by Linus Nielsen Feltzing
*
* iPod driver based on code from the ipodlinux project - http://ipodlinux.org
* Adapted for Rockbox in January 2006
* Original file: podzilla/usb.c
* Copyright (C) 2005 Adam Johnston
*
* All files in this archive are subject to the GNU General Public License.
* See the file COPYING in the source tree root for full license agreement.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
****************************************************************************/
#include "config.h"
#include "system.h"
#include "usb.h"
#include "button.h"
#include "ata.h"
#include "string.h"
#include "arcotg_udc.h"
#ifdef HAVE_USBSTACK
#include "usbstack.h"
#endif
void usb_init_device(void)
{
int r0;
outl(inl(0x70000084) | 0x200, 0x70000084);
outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
DEV_EN |= DEV_USB;
DEV_RS |= DEV_USB; /* reset usb start */
DEV_RS &=~DEV_USB;/* reset usb end */
DEV_INIT2 |= INIT_USB;
while ((inl(0x70000028) & 0x80) == 0);
UDC_PORTSC1 |= PORTSCX_PORT_RESET;
while ((UDC_PORTSC1 & PORTSCX_PORT_RESET) != 0);
UDC_OTGSC |= 0x5F000000;
if( (UDC_OTGSC & 0x100) == 0) {
UDC_USBMODE &=~ USB_MODE_CTRL_MODE_HOST;
UDC_USBMODE |= USB_MODE_CTRL_MODE_DEVICE;
outl(inl(0x70000028) | 0x4000, 0x70000028);
outl(inl(0x70000028) | 0x2, 0x70000028);
} else {
UDC_USBMODE |= USB_MODE_CTRL_MODE_DEVICE;
outl(inl(0x70000028) &~0x4000, 0x70000028);
outl(inl(0x70000028) | 0x2, 0x70000028);
}
UDC_USBCMD |= USB_CMD_CTRL_RESET;
while((UDC_USBCMD & USB_CMD_CTRL_RESET) != 0);
r0 = UDC_PORTSC1;
/* Note from IPL source (referring to next 5 lines of code:
THIS NEEDS TO BE CHANGED ONCE THERE IS KERNEL USB */
DEV_INIT2 |= INIT_USB;
DEV_EN |= DEV_USB;
while ((inl(0x70000028) & 0x80) == 0);
outl(inl(0x70000028) | 0x2, 0x70000028);
udelay(0x186A0);
#ifndef HAVE_USBSTACK
dr_controller_setup();
#endif
#if defined(IPOD_COLOR) || defined(IPOD_4G) \
|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
/* GPIO C bit 1 is firewire detect */
GPIOC_ENABLE |= 0x02;
GPIOC_OUTPUT_EN &= ~0x02;
#endif
}
void usb_enable(bool on)
{
#ifdef HAVE_USBSTACK
if (!on) {
usb_stack_stop();
}
#else
/* This device specific code will eventually give way to proper USB
handling, which should be the same for all PP502x targets. */
if (on)
{
#if defined(IPOD_ARCH) || defined(IRIVER_H10) || defined (IRIVER_H10_5GB) ||\
defined(SANSA_C200)
/* For the H10 and iPod, we can only do one thing with USB mode - reboot
into the flash-based disk-mode. This does not return. */
#if defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
if(button_status()==BUTTON_RIGHT)
#endif /* defined(IRIVER_H10) || defined (IRIVER_H10_5GB) */
{
#ifndef HAVE_FLASH_STORAGE
ata_sleepnow(); /* Immediately spindown the disk. */
sleep(HZ*2);
#endif
#ifdef IPOD_ARCH /* The following code is based on ipodlinux */
#if CONFIG_CPU == PP5020
memcpy((void *)0x40017f00, "diskmode\0\0hotstuff\0\0\1", 21);
#elif CONFIG_CPU == PP5022
memcpy((void *)0x4001ff00, "diskmode\0\0hotstuff\0\0\1", 21);
#endif /* CONFIG_CPU */
#endif /* IPOD_ARCH */
system_reboot(); /* Reboot */
}
#endif /*defined(IPOD_ARCH) || defined(IRIVER_H10) || defined (IRIVER_H10_5GB)*/
}
#endif /* !HAVE_USBSTACK */
}
int usb_detect(void)
{
static int countdown = 0;
static int status = USB_EXTRACTED;
static bool prev_usbstatus1 = false;
bool usbstatus1, usbstatus2;
#if defined(IPOD_COLOR) || defined(IPOD_4G) \
|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
/* GPIO C bit 1 is firewire detect */
if (!(GPIOC_INPUT_VAL & 0x02))
return USB_INSERTED;
#endif
if (countdown > 0)
{
countdown--;
usbstatus2 = (UDC_PORTSC1 & PORTSCX_CURRENT_CONNECT_STATUS) ? true : false;
if ((countdown == 0) || usbstatus2)
{
countdown = 0;
status = usbstatus2 ? USB_INSERTED : USB_POWERED;
#ifndef HAVE_USBSTACK
dr_controller_stop();
#endif
}
return status;
}
/* UDC_ID should have the bit format:
[31:24] = 0x0
[23:16] = 0x22 (Revision number)
[15:14] = 0x3 (Reserved)
[13:8] = 0x3a (NID - 1's compliment of ID)
[7:6] = 0x0 (Reserved)
[5:0] = 0x05 (ID) */
if (UDC_ID != 0x22FA05) {
/* This should never occur - do we even need to test? */
return USB_EXTRACTED;
}
usbstatus1 = (UDC_OTGSC & 0x800) ? true : false;
if (usbstatus1 == prev_usbstatus1)
{
/* Nothing has changed, so just return previous status */
return status;
}
prev_usbstatus1 = usbstatus1;
if (!usbstatus1)
{ /* We have just been disconnected */
status = USB_EXTRACTED;
return status;
}
/* We now know that we have just been connected to either a charger
or a computer */
if((button_status() & ~USBPOWER_BTN_IGNORE) == USBPOWER_BUTTON)
{
/* The user wants to charge, so it doesn't matter what we are
connected to. */
status = USB_POWERED;
return status;
}
/* Run the USB controller for long enough to detect if we're connected
to a computer, then stop it again. */
#ifndef HAVE_USBSTACK
dr_controller_run();
#else
usb_stack_start();
#endif
/* Wait for 50 ticks (500ms) before deciding there is no computer
attached. The required value varied a lot between different users
when this feature was being tested. */
countdown = 50;
return status;
}
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