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         kernel_ulong_t quirks)
  38 {
  39         int result;
  40         struct device *dev = &iface->dev;
  41
  42         result = wa_rpipes_create(wa);
  43         if (result < 0)
  44                 goto error_rpipes_create;
  45         wa->quirks = quirks;
  46         /* Fill up Data Transfer EP pointers */
  47         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
  48         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
  49         wa->dti_buf_size = usb_endpoint_maxp(wa->dti_epd);
  50         wa->dti_buf = kmalloc(wa->dti_buf_size, GFP_KERNEL);
  51         if (wa->dti_buf == NULL) {
  52                 result = -ENOMEM;
  53                 goto error_dti_buf_alloc;
  54         }
  55         result = wa_nep_create(wa, iface);
  56         if (result < 0) {
  57                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
  58                         result);
  59                 goto error_nep_create;
  60         }
  61         return 0;
  62
  63 error_nep_create:
  64         kfree(wa->dti_buf);
  65 error_dti_buf_alloc:
  66         wa_rpipes_destroy(wa);
  67 error_rpipes_create:
  68         return result;
  69 }
  70 EXPORT_SYMBOL_GPL(wa_create);
  71
  72
  73 void __wa_destroy(struct wahc *wa)
  74 {
  75         if (wa->dti_urb) {
  76                 usb_kill_urb(wa->dti_urb);
  77                 usb_put_urb(wa->dti_urb);
  78                 usb_kill_urb(wa->buf_in_urb);
  79                 usb_put_urb(wa->buf_in_urb);
  80         }
  81         kfree(wa->dti_buf);
  82         wa_nep_destroy(wa);
  83         wa_rpipes_destroy(wa);
  84 }
  85 EXPORT_SYMBOL_GPL(__wa_destroy);
  86
  87 /**
  88  * wa_reset_all - reset the WA device
  89  * @wa: the WA to be reset
  90  *
  91  * For HWAs the radio controller and all other PALs are also reset.
  92  */
  93 void wa_reset_all(struct wahc *wa)
  94 {
  95         /* FIXME: assuming HWA. */
  96         wusbhc_reset_all(wa->wusb);
  97 }
  98
  99 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
 100 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
 101 MODULE_LICENSE("GPL");