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 #include "arcotg_udc.h"
  31
  32 #ifdef HAVE_USBSTACK
  33 #include "usbstack.h"
  34 #endif
  35
  36 void usb_init_device(void)
  37 {
  38     int r0;
  39     outl(inl(0x70000084) | 0x200, 0x70000084);
  40
  41     outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
  42     DEV_EN |= DEV_USB;
  43
  44     DEV_RS |= DEV_USB; /* reset usb start */
  45     DEV_RS &=~DEV_USB;/* reset usb end */
  46
  47     DEV_INIT |= INIT_USB;
  48     while ((inl(0x70000028) & 0x80) == 0);
  49
  50     UDC_PORTSC1 |= PORTSCX_PORT_RESET;
  51     while ((UDC_PORTSC1 & PORTSCX_PORT_RESET) != 0);
  52
  53     UDC_OTGSC |= 0x5F000000;
  54     if( (UDC_OTGSC & 0x100) == 0) {
  55         UDC_USBMODE &=~ USB_MODE_CTRL_MODE_HOST;
  56         UDC_USBMODE |= USB_MODE_CTRL_MODE_DEVICE;
  57         outl(inl(0x70000028) | 0x4000, 0x70000028);
  58         outl(inl(0x70000028) | 0x2, 0x70000028);
  59     } else {
  60         UDC_USBMODE |= USB_MODE_CTRL_MODE_DEVICE;
  61         outl(inl(0x70000028) &~0x4000, 0x70000028);
  62         outl(inl(0x70000028) | 0x2, 0x70000028);
  63     }
  64
  65
  66     UDC_USBCMD |= USB_CMD_CTRL_RESET;
  67     while((UDC_USBCMD & USB_CMD_CTRL_RESET) != 0);
  68
  69     r0 = UDC_PORTSC1;
  70
  71     /* Note from IPL source (referring to next 5 lines of code:
  72        THIS NEEDS TO BE CHANGED ONCE THERE IS KERNEL USB */
  73     DEV_INIT |= INIT_USB;
  74     DEV_EN |= DEV_USB;
  75     while ((inl(0x70000028) & 0x80) == 0);
  76     outl(inl(0x70000028) | 0x2, 0x70000028);
  77
  78     udelay(0x186A0);
  79
  80 #ifndef HAVE_USBSTACK
  81     dr_controller_setup();
  82 #endif
  83
  84 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
  85  || defined(IPOD_MINI)  || defined(IPOD_MINI2G)
  86     /* GPIO C bit 1 is firewire detect */
  87     GPIOC_ENABLE    |=  0x02;
  88     GPIOC_OUTPUT_EN &= ~0x02;
  89 #endif
  90 }
  91
  92 void usb_enable(bool on)
  93 {
  94 #ifdef HAVE_USBSTACK
  95         (void)on;
  96 #else
  97     /* This device specific code will eventually give way to proper USB
  98        handling, which should be the same for all PP502x targets. */
  99     if (on)
 100     {
 101 #if defined(IPOD_ARCH) || defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
 102         /* For the H10 and iPod, we can only do one thing with USB mode - reboot
 103            into the flash-based disk-mode.  This does not return. */
 104
 105 #if defined(IRIVER_H10) || defined (IRIVER_H10_5GB)
 106         if(button_status()==BUTTON_RIGHT)
 107 #endif /* defined(IRIVER_H10) || defined (IRIVER_H10_5GB) */
 108         {
 109             ata_sleepnow(); /* Immediately spindown the disk. */
 110             sleep(HZ*2);
 111
 112 #ifdef IPOD_ARCH  /* The following code is based on ipodlinux */
 113 #if CONFIG_CPU == PP5020
 114             memcpy((void *)0x40017f00, "diskmode\0\0hotstuff\0\0\1", 21);
 115 #elif CONFIG_CPU == PP5022
 116             memcpy((void *)0x4001ff00, "diskmode\0\0hotstuff\0\0\1", 21);
 117 #endif /* CONFIG_CPU */
 118 #endif /* IPOD_ARCH */
 119
 120             system_reboot(); /* Reboot */
 121         }
 122 #endif /*defined(IPOD_ARCH) || defined(IRIVER_H10) || defined (IRIVER_H10_5GB)*/
 123     }
 124 #endif /* !HAVE_USBSTACK */
 125 }
 126
 127 bool usb_detect(void)
 128 {
 129     static bool prev_usbstatus1 = false;
 130     bool usbstatus1,usbstatus2;
 131
 132 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
 133  || defined(IPOD_MINI)  || defined(IPOD_MINI2G)
 134     /* GPIO C bit 1 is firewire detect */
 135     if (!(GPIOC_INPUT_VAL & 0x02))
 136         return true;
 137 #endif
 138
 139     /* UDC_ID should have the bit format:
 140         [31:24] = 0x0
 141         [23:16] = 0x22 (Revision number)
 142         [15:14] = 0x3 (Reserved)
 143         [13:8]  = 0x3a (NID - 1's compliment of ID)
 144         [7:6]   = 0x0 (Reserved)
 145         [5:0]   = 0x05 (ID) */
 146     if (UDC_ID != 0x22FA05) {
 147         return false;
 148     }
 149
 150     usbstatus1 = (UDC_OTGSC & 0x800) ? true : false;
 151 #ifdef HAVE_USBSTACK
 152     if ((usbstatus1 == true) && (prev_usbstatus1 == false)) {
 153         usb_stack_start();
 154     } else if ((usbstatus1 == false) && (prev_usbstatus1 == true)) {
 155         usb_stack_stop();
 156     }
 157 #else
 158     if ((usbstatus1 == true) && (prev_usbstatus1 == false)) {
 159         dr_controller_run();
 160     } else if ((usbstatus1 == false) && (prev_usbstatus1 == true)) {
 161         dr_controller_stop();
 162     }
 163 #endif
 164     prev_usbstatus1 = usbstatus1;
 165     usbstatus2 = (UDC_PORTSC1 & PORTSCX_CURRENT_CONNECT_STATUS) ? true : false;
 166
 167     if (usbstatus1 && usbstatus2) {
 168         return true;
 169     } else {
 170         return false;
 171     }
 172 }