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 #include "usb_class_driver.h"
  28
  29 /*#define LOGF_ENABLE*/
  30 #include "logf.h"
  31
  32 /* charging_only interface */
  33 static struct usb_interface_descriptor __attribute__((aligned(2)))
  34                                 interface_descriptor =
  35 {
  36     .bLength            = sizeof(struct usb_interface_descriptor),
  37     .bDescriptorType    = USB_DT_INTERFACE,
  38     .bInterfaceNumber   = 0,
  39     .bAlternateSetting  = 0,
  40     .bNumEndpoints      = 0,
  41     .bInterfaceClass    = USB_CLASS_VENDOR_SPEC,
  42     .bInterfaceSubClass = 0,
  43     .bInterfaceProtocol = 0,
  44     .iInterface         = 0
  45 };
  46
  47 static int usb_interface;
  48
  49 int usb_charging_only_request_endpoints(struct usb_class_driver *drv)
  50 {
  51     (void) drv;
  52     return 0;
  53 }
  54
  55 int usb_charging_only_set_first_interface(int interface)
  56 {
  57     usb_interface = interface;
  58     return interface + 1;
  59 }
  60
  61 int usb_charging_only_get_config_descriptor(unsigned char *dest,int max_packet_size)
  62 {
  63     (void)max_packet_size;
  64     unsigned char *orig_dest = dest;
  65
  66     interface_descriptor.bInterfaceNumber=usb_interface;
  67     PACK_DATA(&dest, interface_descriptor);
  68
  69     return (dest-orig_dest);
  70 }