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 && !defined(USB_DETECT_PIN)
  33 #warning USB_DETECT_PIN not defined for your target
  34 #endif
  35
  36 #if CONFIG_CPU == AS3525
  37 static int usb_status = USB_EXTRACTED;
  38 #endif
  39
  40 void usb_enable(bool on)
  41 {
  42 #ifdef HAVE_USBSTACK
  43     if (on)
  44         usb_core_init();
  45     else
  46         usb_core_exit();
  47 #else
  48     (void)on;
  49 #endif
  50 }
  51
  52 void usb_init_device(void)
  53 {
  54 #ifdef USB_DETECT_PIN
  55     GPIOA_DIR &= ~(1 << USB_DETECT_PIN); /* set as input */
  56 #endif
  57 }
  58
  59 #if CONFIG_CPU == AS3525
  60 void usb_insert_int(void)
  61 {
  62     usb_status = USB_INSERTED;
  63 }
  64
  65 void usb_remove_int(void)
  66 {
  67     usb_status = USB_EXTRACTED;
  68 }
  69
  70 int usb_detect(void)
  71 {
  72     return usb_status;
  73 }
  74 #else
  75 int usb_detect(void)
  76 {
  77 #ifdef USB_DETECT_PIN
  78     if (GPIOA_PIN( USB_DETECT_PIN ))
  79         return USB_INSERTED;
  80     else
  81 #endif
  82         return USB_EXTRACTED;
  83 }
  84 #endif