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                 result = -ENOMEM;
  51                 goto error_xfer_result_alloc;
  52         }
  53         result = wa_nep_create(wa, iface);
  54         if (result < 0) {
  55                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
  56                         result);
  57                 goto error_nep_create;
  58         }
  59         return 0;
  60
  61 error_nep_create:
  62         kfree(wa->xfer_result);
  63 error_xfer_result_alloc:
  64         wa_rpipes_destroy(wa);
  65 error_rpipes_create:
  66         return result;
  67 }
  68 EXPORT_SYMBOL_GPL(wa_create);
  69
  70
  71 void __wa_destroy(struct wahc *wa)
  72 {
  73         if (wa->dti_urb) {
  74                 usb_kill_urb(wa->dti_urb);
  75                 usb_put_urb(wa->dti_urb);
  76                 usb_kill_urb(wa->buf_in_urb);
  77                 usb_put_urb(wa->buf_in_urb);
  78         }
  79         kfree(wa->xfer_result);
  80         wa_nep_destroy(wa);
  81         wa_rpipes_destroy(wa);
  82 }
  83 EXPORT_SYMBOL_GPL(__wa_destroy);
  84
  85 /**
  86  * wa_reset_all - reset the WA device
  87  * @wa: the WA to be reset
  88  *
  89  * For HWAs the radio controller and all other PALs are also reset.
  90  */
  91 void wa_reset_all(struct wahc *wa)
  92 {
  93         /* FIXME: assuming HWA. */
  94         wusbhc_reset_all(wa->wusb);
  95 }
  96
  97 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
  98 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
  99 MODULE_LICENSE("GPL");