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 "usb.h"
  23 #include "power.h"
  24 #include "as3525.h"
  25 #include <stdbool.h>
  26
  27 #if defined(SANSA_CLIP)
  28 #define USB_DETECT_PIN 6
  29
  30 #elif defined(SANSA_FUZE) || defined(SANSA_E200V2)
  31 #define USB_DETECT_PIN 3
  32
  33 #elif defined(SANSA_C200V2)
  34 #define USB_DETECT_PIN 1
  35 #endif
  36
  37 void usb_enable(bool on)
  38 {
  39     (void)on;
  40 }
  41
  42 void usb_init_device(void)
  43 {
  44 #ifdef USB_DETECT_PIN
  45     GPIOA_DIR &= ~(1 << USB_DETECT_PIN); /* set as input */
  46 #endif
  47 }
  48
  49 int usb_detect(void)
  50 {
  51 #ifdef USB_DETECT_PIN
  52     if (GPIOA_PIN( USB_DETECT_PIN ))
  53         return USB_INSERTED;
  54     else
  55 #endif
  56         return USB_EXTRACTED;
  57 }