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 <linux/slab.h>
  26 #include "wusbhc.h"
  27 #include "wa-hc.h"
  28
  29 /**
  30  * Assumes
  31  *
  32  * wa->usb_dev and wa->usb_iface initialized and refcounted,
  33  * wa->wa_descr initialized.
  34  */
  35 int wa_create(struct wahc *wa, struct usb_interface *iface)
  36 {
  37         int result;
  38         struct device *dev = &iface->dev;
  39
  40         result = wa_rpipes_create(wa);
  41         if (result < 0)
  42                 goto error_rpipes_create;
  43         /* Fill up Data Transfer EP pointers */
  44         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
  45         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
  46         wa->xfer_result_size = le16_to_cpu(wa->dti_epd->wMaxPacketSize);
  47         wa->xfer_result = kmalloc(wa->xfer_result_size, GFP_KERNEL);
  48         if (wa->xfer_result == NULL)
  49                 goto error_xfer_result_alloc;
  50         result = wa_nep_create(wa, iface);
  51         if (result < 0) {
  52                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
  53                         result);
  54                 goto error_nep_create;
  55         }
  56         return 0;
  57
  58 error_nep_create:
  59         kfree(wa->xfer_result);
  60 error_xfer_result_alloc:
  61         wa_rpipes_destroy(wa);
  62 error_rpipes_create:
  63         return result;
  64 }
  65 EXPORT_SYMBOL_GPL(wa_create);
  66
  67
  68 void __wa_destroy(struct wahc *wa)
  69 {
  70         if (wa->dti_urb) {
  71                 usb_kill_urb(wa->dti_urb);
  72                 usb_put_urb(wa->dti_urb);
  73                 usb_kill_urb(wa->buf_in_urb);
  74                 usb_put_urb(wa->buf_in_urb);
  75         }
  76         kfree(wa->xfer_result);
  77         wa_nep_destroy(wa);
  78         wa_rpipes_destroy(wa);
  79 }
  80 EXPORT_SYMBOL_GPL(__wa_destroy);
  81
  82 /**
  83  * wa_reset_all - reset the WA device
  84  * @wa: the WA to be reset
  85  *
  86  * For HWAs the radio controller and all other PALs are also reset.
  87  */
  88 void wa_reset_all(struct wahc *wa)
  89 {
  90         /* FIXME: assuming HWA. */
  91         wusbhc_reset_all(wa->wusb);
  92 }
  93
  94 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
  95 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
  96 MODULE_LICENSE("GPL");