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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 "usb_core.h"
#include "usb_drv.h"
void usb_init_device(void)
{
/* enable usb module */
GPO32_ENABLE |= 0x200;
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);
outl(inl(0x70000028) | 0x2, 0x70000028);
udelay(0x186A0);
#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)
{
if (on) {
#ifndef SANSA_E200
/* until we have native mass-storage mode, we want to reboot on
usb host connect */
#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 /* SANSA_E200 */
}
else
usb_core_exit();
}
static bool usb_pin_detect(void)
{
#if defined(IPOD_4G) || defined(IPOD_COLOR) \
|| defined(IPOD_MINI) || defined(IPOD_MINI2G)
/* GPIO D bit 3 is usb detect */
if (GPIOD_INPUT_VAL & 0x08)
return true;
#elif defined(IPOD_NANO) || defined(IPOD_VIDEO)
/* GPIO L bit 4 is usb detect */
if (GPIOL_INPUT_VAL & 0x10)
return true;
#elif defined(SANSA_C200)
/* GPIO H bit 1 is usb detect */
if (GPIOH_INPUT_VAL & 0x02)
return true;
#elif defined(SANSA_E200)
/* GPIO B bit 4 is usb detect */
if (GPIOB_INPUT_VAL & 0x10)
return true;
#elif defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
/* GPIO L bit 2 is usb detect */
if (GPIOL_INPUT_VAL & 0x4)
return true;
#endif
return false;
}
/* detect host or charger (INSERTED or POWERED) */
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))
/* no charger detection needed for firewire */
return USB_INSERTED;
#endif
if (countdown > 0)
{
countdown--;
usbstatus2 = usb_core_data_connection();
if ((countdown == 0) || usbstatus2)
{
/* We now know that we have been connected to either a charger
or a computer */
countdown = 0;
status = usbstatus2 ? USB_INSERTED : USB_POWERED;
}
return status;
}
usbstatus1 = usb_pin_detect();
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;
}
/* Run the USB stack to request full bus power */
usb_core_init();
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;
}
/* Wait up to 50 ticks (500ms) before deciding there is no computer
attached. */
countdown = 50;
return status;
}
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