firmware/usbstack/usb_charging_only.c

   1 /***************************************************************************
   2  *             __________               __   ___.
   3  *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
   4  *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
   5  *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
   6  *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
   7  *                     \/            \/     \/    \/            \/
   8  * $Id:  $
   9  *
  10  * Copyright (C) 2008 by Frank Gevaerts
  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 #include "string.h"
  22 #include "system.h"
  23 #include "usb_core.h"
  24 #include "usb_drv.h"
  25 #include "kernel.h"
  26 #include "usb_charging_only.h"
  27
  28 //#define LOGF_ENABLE
  29 #include "logf.h"
  30
  31 #ifdef USB_CHARGING_ONLY
  32
  33 /* charging_only interface */
  34 static struct usb_interface_descriptor __attribute__((aligned(2)))
  35                                 interface_descriptor =
  36 {
  37     .bLength            = sizeof(struct usb_interface_descriptor),
  38     .bDescriptorType    = USB_DT_INTERFACE,
  39     .bInterfaceNumber   = 0,
  40     .bAlternateSetting  = 0,
  41     .bNumEndpoints      = 0,
  42     .bInterfaceClass    = USB_CLASS_VENDOR_SPEC,
  43     .bInterfaceSubClass = 0,
  44     .bInterfaceProtocol = 0,
  45     .iInterface         = 0
  46 };
  47
  48
  49 static int usb_interface;
  50
  51 int usb_charging_only_request_endpoints(struct usb_class_driver *drv)
  52 {
  53     (void) drv;
  54     return 0;
  55 }
  56
  57 int usb_charging_only_set_first_interface(int interface)
  58 {
  59     usb_interface = interface;
  60     return interface + 1;
  61 }
  62
  63 int usb_charging_only_get_config_descriptor(unsigned char *dest,int max_packet_size)
  64 {
  65     (void)max_packet_size;
  66     unsigned char *orig_dest = dest;
  67
  68     interface_descriptor.bInterfaceNumber=usb_interface;
  69     memcpy(dest,&interface_descriptor,sizeof(struct usb_interface_descriptor));
  70
  71     dest+=sizeof(struct usb_interface_descriptor);
  72
  73     return (dest-orig_dest);
  74 }
  75
  76 #endif /*USB_CHARGING_ONLY*/