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         if (iface->cur_altsetting->desc.bNumEndpoints < 3)
  43                 return -ENODEV;
  44
  45         result = wa_rpipes_create(wa);
  46         if (result < 0)
  47                 goto error_rpipes_create;
  48         wa->quirks = quirks;
  49         /* Fill up Data Transfer EP pointers */
  50         wa->dti_epd = &iface->cur_altsetting->endpoint[1].desc;
  51         wa->dto_epd = &iface->cur_altsetting->endpoint[2].desc;
  52         wa->dti_buf_size = usb_endpoint_maxp(wa->dti_epd);
  53         wa->dti_buf = kmalloc(wa->dti_buf_size, GFP_KERNEL);
  54         if (wa->dti_buf == NULL) {
  55                 result = -ENOMEM;
  56                 goto error_dti_buf_alloc;
  57         }
  58         result = wa_nep_create(wa, iface);
  59         if (result < 0) {
  60                 dev_err(dev, "WA-CDS: can't initialize notif endpoint: %d\n",
  61                         result);
  62                 goto error_nep_create;
  63         }
  64         return 0;
  65
  66 error_nep_create:
  67         kfree(wa->dti_buf);
  68 error_dti_buf_alloc:
  69         wa_rpipes_destroy(wa);
  70 error_rpipes_create:
  71         return result;
  72 }
  73 EXPORT_SYMBOL_GPL(wa_create);
  74
  75
  76 void __wa_destroy(struct wahc *wa)
  77 {
  78         if (wa->dti_urb) {
  79                 usb_kill_urb(wa->dti_urb);
  80                 usb_put_urb(wa->dti_urb);
  81         }
  82         kfree(wa->dti_buf);
  83         wa_nep_destroy(wa);
  84         wa_rpipes_destroy(wa);
  85 }
  86 EXPORT_SYMBOL_GPL(__wa_destroy);
  87
  88 /**
  89  * wa_reset_all - reset the WA device
  90  * @wa: the WA to be reset
  91  *
  92  * For HWAs the radio controller and all other PALs are also reset.
  93  */
  94 void wa_reset_all(struct wahc *wa)
  95 {
  96         /* FIXME: assuming HWA. */
  97         wusbhc_reset_all(wa->wusb);
  98 }
  99
 100 MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
 101 MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
 102 MODULE_LICENSE("GPL");