firmware/target/arm/as3525/usb-as3525.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id$
   9  *
  10  * Copyright © 2008 Rafaël Carré
  11  *
  12  * This program is free software; you can redistribute it and/or
  13  * modify it under the terms of the GNU General Public License
  14  * as published by the Free Software Foundation; either version 2
  15  * of the License, or (at your option) any later version.
  16  *
  17  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
  18  * KIND, either express or implied.
  19  *
  20  ****************************************************************************/
  21
  22 #include <stdbool.h>
  23 #include "config.h"
  24 #include "usb.h"
  25 #ifdef HAVE_USBSTACK
  26 #include "usb_core.h"
  27 #endif
  28 #include "usb-target.h"
  29 #include "power.h"
  30 #include "as3525.h"
  31
  32 #if CONFIG_CPU == AS3525
  33 static int usb_status = USB_EXTRACTED;
  34 #endif
  35
  36 void usb_enable(bool on)
  37 {
  38 #ifdef HAVE_USBSTACK
  39     if (on)
  40         usb_core_init();
  41     else
  42         usb_core_exit();
  43 #else
  44     (void)on;
  45 #endif
  46 }
  47
  48 void usb_init_device(void)
  49 {
  50 #ifdef USB_DETECT_PIN
  51     GPIOA_DIR &= ~(1 << USB_DETECT_PIN); /* set as input */
  52 #endif
  53 }
  54
  55 #if CONFIG_CPU == AS3525
  56 void usb_insert_int(void)
  57 {
  58     usb_status = USB_INSERTED;
  59 }
  60
  61 void usb_remove_int(void)
  62 {
  63     usb_status = USB_EXTRACTED;
  64 }
  65
  66 int usb_detect(void)
  67 {
  68     return usb_status;
  69 }
  70 #else
  71 int usb_detect(void)
  72 {
  73 #ifdef USB_DETECT_PIN
  74     if (GPIOA_PIN( USB_DETECT_PIN ))
  75         return USB_INSERTED;
  76     else
  77 #endif
  78         return USB_EXTRACTED;
  79 }
  80 #endif