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