drivers/usb/wusbcore/wa-hc.c

   1 /*
   2  * Wire Adapter Host Controller Driver
   3  * Common items to HWA and DWA based HCDs
   4  *
   5  * Copyright (C) 2005-2006 Intel Corporation
   6  * Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License version
  10  * 2 as published by the Free Software Foundation.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  20  * 02110-1301, USA.
  21  *
  22  *
  23  * FIXME: docs
  24  */
  25 #include "wusbhc.h"
  26 #include "wa-hc.h"
  27
  28 /**
  29  * Assumes
  30  *
  31  * wa->usb_dev and wa->usb_iface initialized and refcounted,
  32  * wa->wa_descr initialized.
  33  */
  34 int wa_create(struct wahc *wa, struct usb_interface *iface)
  35 {
  36         int result;
  37         struct device *dev = &iface->dev;
  38
  39         result = wa_rpipes_create(wa);
  40         if (result < 0)
  41                 goto error_rpipes_create;
  42         /* Fill up Data Transfer EP pointers */
  43         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
  44         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
  45         wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
  46         wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
  47         if (wa->xfer_result == NULL)
  48                 goto error_xfer_result_alloc;
  49         result = wa_nep_create(wa, iface);
  50         if (result < 0) {
  51                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
  52                         result);
  53                 goto error_nep_create;
  54         }
  55         return 0;
  56
  57 error_nep_create:
  58         kfree(wa->xfer_result);
  59 error_xfer_result_alloc:
  60         wa_rpipes_destroy(wa);
  61 error_rpipes_create:
  62         return result;
  63 }
  64 EXPORT_SYMBOL_GPL(wa_create);
  65
  66
  67 void __wa_destroy(struct wahc *wa)
  68 {
  69         if (wa->dti_urb) {
  70                 usb_kill_urb(wa->dti_urb);
  71                 usb_put_urb(wa->dti_urb);
  72                 usb_kill_urb(wa->buf_in_urb);
  73                 usb_put_urb(wa->buf_in_urb);
  74         }
  75         kfree(wa->xfer_result);
  76         wa_nep_destroy(wa);
  77         wa_rpipes_destroy(wa);
  78 }
  79 EXPORT_SYMBOL_GPL(__wa_destroy);
  80
  81 /**
  82  * wa_reset_all - reset the WA device
  83  * @wa: the WA to be reset
  84  *
  85  * For HWAs the radio controller and all other PALs are also reset.
  86  */
  87 void wa_reset_all(struct wahc *wa)
  88 {
  89         /* FIXME: assuming HWA. */
  90         wusbhc_reset_all(wa->wusb);
  91 }
  92
  93 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
  94 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
  95 MODULE_LICENSE("GPL");