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 "usb_core.h"
  31 #include "usb_drv.h"
  32
  33 void usb_init_device(void)
  34 {
  35     /* enable usb module */
  36     outl(inl(0x7000002C) | 0x3000000, 0x7000002C);
  37
  38     DEV_EN |= DEV_USB0;
  39     DEV_EN |= DEV_USB1;
  40
  41     /* reset both USBs */
  42     DEV_RS |= DEV_USB0;
  43     DEV_RS &=~DEV_USB0;
  44     DEV_RS |= DEV_USB1;
  45     DEV_RS &=~DEV_USB1;
  46
  47     DEV_INIT2 |= INIT_USB;
  48
  49     while ((inl(0x70000028) & 0x80) == 0);
  50     outl(inl(0x70000028) | 0x2, 0x70000028);
  51     udelay(100000);
  52
  53     /* disable USB-devices until USB is detected via GPIO */
  54 #ifndef BOOTLOADER
  55     /* Disabling USB0 in the bootloader makes the OF not load,
  56        Also something here breaks usb pin detect in bootloader.
  57        leave it all enabled untill rockbox main loads */
  58     DEV_EN &= ~DEV_USB0;
  59     DEV_EN &= ~DEV_USB1;
  60     DEV_INIT2 &= ~INIT_USB;
  61 #endif
  62
  63 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
  64  || defined(IPOD_MINI)  || defined(IPOD_MINI2G)
  65     /* GPIO C bit 1 is firewire detect */
  66     GPIOC_ENABLE    |=  0x02;
  67     GPIOC_OUTPUT_EN &= ~0x02;
  68 #endif
  69 }
  70
  71 void usb_enable(bool on)
  72 {
  73     if (on) {
  74         /* if USB is detected, re-enable the USB-devices, otherwise make sure it's disabled */
  75         DEV_EN |= DEV_USB0;
  76         DEV_EN |= DEV_USB1;
  77         DEV_INIT2 |= INIT_USB;
  78         usb_core_init();
  79     }
  80     else {
  81         usb_core_exit();
  82         /* Disable USB devices */
  83         DEV_EN &=~ DEV_USB0;
  84         DEV_EN &=~ DEV_USB1;
  85         DEV_INIT2 &=~ INIT_USB;
  86     }
  87 }
  88
  89 static bool usb_pin_detect(void)
  90 {
  91     bool retval = false;
  92
  93 #if defined(IPOD_4G) || defined(IPOD_COLOR) \
  94  || defined(IPOD_MINI) || defined(IPOD_MINI2G)
  95     /* GPIO D bit 3 is usb detect */
  96     if (GPIOD_INPUT_VAL & 0x08)
  97         retval = true;
  98
  99 #elif defined(IPOD_NANO) || defined(IPOD_VIDEO)
 100     /* GPIO L bit 4 is usb detect */
 101     if (GPIOL_INPUT_VAL & 0x10)
 102         retval = true;
 103
 104 #elif defined(SANSA_C200)
 105     /* GPIO H bit 1 is usb detect */
 106     if (GPIOH_INPUT_VAL & 0x02)
 107         retval = true;
 108
 109 #elif defined(SANSA_E200)
 110     /* GPIO B bit 4 is usb detect */
 111     if (GPIOB_INPUT_VAL & 0x10)
 112         retval = true;
 113
 114 #elif defined(IRIVER_H10) || defined(IRIVER_H10_5GB) || defined(MROBE_100)
 115     /* GPIO L bit 2 is usb detect */
 116     if (GPIOL_INPUT_VAL & 0x4)
 117         retval = true;
 118 #endif
 119
 120     return retval;
 121 }
 122
 123 /* detect host or charger (INSERTED or POWERED) */
 124 int usb_detect(void)
 125 {
 126     if(usb_pin_detect()) {
 127         return USB_INSERTED;
 128     }
 129     else {
 130         return USB_EXTRACTED;
 131     }
 132 }
 133
 134 #if defined(IPOD_COLOR) || defined(IPOD_4G) \
 135  || defined(IPOD_MINI)  || defined(IPOD_MINI2G)
 136 bool firewire_detect(void)
 137 {
 138     /* GPIO C bit 1 is firewire detect */
 139     if (!(GPIOC_INPUT_VAL & 0x02))
 140         /* no charger detection needed for firewire */
 141         return true;
 142     else
 143         return false;
 144 }
 145 #endif