firmware/target/arm/usb-fw-pp502x.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright (C) 2002 by Linus Nielsen Feltzing
  11  *
  12  * iPod driver based on code from the ipodlinux project - http://ipodlinux.org
  13  * Adapted for Rockbox in January 2006
  14  * Original file: podzilla/usb.c
  15  * Copyright (C) 2005 Adam Johnston
  16  *
  17  * All files in this archive are subject to the GNU General Public License.
  18  * See the file COPYING in the source tree root for full license agreement.
  19  *
  20  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  21  * KIND, either express or implied.
  22  *
  23  ****************************************************************************/
  24 #include "config.h"
  25 #include "system.h"
  26 #include "usb.h"
  27 #include "button.h"
  28 #include "ata.h"
  29 #include "string.h"
  30 #ifdef HAVE_USBSTACK
  31 #include "usb_core.h"
  32 #endif
  33
  34 void usb_init_device(void)
  35 {
  36     /* enable usb module */
  37     GPO32_ENABLE |= 0x200;
  38
  39     outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
  40     DEV_EN |= DEV_USB;
  41
  42     DEV_RS |= DEV_USB; /* reset usb start */
  43     DEV_RS &=~DEV_USB;/* reset usb end */
  44
  45     DEV_INIT2 |= INIT_USB;
  46     while ((inl(0x70000028) & 0x80) == 0);
  47     outl(inl(0x70000028) | 0x2, 0x70000028);
  48     udelay(0x186A0);
  49
  50 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
  51  || defined(IPOD_MINI)  || defined(IPOD_MINI2G)
  52     /* GPIO C bit 1 is firewire detect */
  53     GPIOC_ENABLE    |=  0x02;
  54     GPIOC_OUTPUT_EN &= ~0x02;
  55 #endif
  56 }
  57
  58 void usb_enable(bool on)
  59 {
  60 #ifdef HAVE_USBSTACK
  61     if (on)
  62         usb_core_init();
  63     else
  64         usb_core_exit();
  65 #else
  66     /* This device specific code will eventually give way to proper USB
  67        handling, which should be the same for all PP502x targets. */
  68     if (on)
  69     {
  70 #if defined(IPOD_ARCH) || defined(IRIVER_H10) || defined (IRIVER_H10_5GB) ||\
  71     defined(SANSA_C200)
  72         /* For the H10 and iPod, we can only do one thing with USB mode - reboot
  73            into the flash-based disk-mode.  This does not return. */
  74
  75 #if defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
  76         if(button_status()==BUTTON_RIGHT)
  77 #endif /* defined(IRIVER_H10) || defined (IRIVER_H10_5GB) */
  78         {
  79 #ifndef HAVE_FLASH_STORAGE
  80             ata_sleepnow(); /* Immediately spindown the disk. */
  81             sleep(HZ*2);
  82 #endif
  83
  84 #ifdef IPOD_ARCH  /* The following code is based on ipodlinux */
  85 #if CONFIG_CPU == PP5020
  86             memcpy((void *)0x40017f00, "diskmode\0\0hotstuff\0\0\1", 21);
  87 #elif CONFIG_CPU == PP5022
  88             memcpy((void *)0x4001ff00, "diskmode\0\0hotstuff\0\0\1", 21);
  89 #endif /* CONFIG_CPU */
  90 #endif /* IPOD_ARCH */
  91
  92             system_reboot(); /* Reboot */
  93         }
  94 #endif /*defined(IPOD_ARCH) || defined(IRIVER_H10) || defined (IRIVER_H10_5GB)*/
  95     }
  96 #endif /* !HAVE_USBSTACK */
  97 }
  98
  99 int usb_detect(void)
 100 {
 101 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
 102  || defined(IPOD_MINI)  || defined(IPOD_MINI2G)
 103     /* GPIO C bit 1 is firewire detect */
 104     if (!(GPIOC_INPUT_VAL & 0x02))
 105         return USB_INSERTED;
 106 #endif
 107
 108 #if defined(SANSA_C200)
 109     /* GPIO H bit 1 is usb detect */
 110     if (GPIOH_INPUT_VAL & 0x02)
 111         return USB_INSERTED;
 112 #elif defined(SANSA_E200)
 113     /* GPIO B bit 4 is usb detect */
 114     if (GPIOB_INPUT_VAL & 0x10)
 115         return USB_INSERTED;
 116 #elif defined(IRIVER_H10) || defined(IRIVER_H10_5GB)
 117     /* GPIO L bit 2 is usb detect */
 118     if (GPIOL_INPUT_VAL & 0x4)
 119         return USB_INSERTED;
 120 #endif
 121
 122     return USB_EXTRACTED;
 123 }