LXR linux/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 */
  36int 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
  61error_nep_create:
  62        kfree(wa->xfer_result);
  63error_xfer_result_alloc:
  64        wa_rpipes_destroy(wa);
  65error_rpipes_create:
  66        return result;
  67}
  68EXPORT_SYMBOL_GPL(wa_create);
  69
  70
  71void __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}
  83EXPORT_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 */
  91void wa_reset_all(struct wahc *wa)
  92{
  93        /* FIXME: assuming HWA. */
  94        wusbhc_reset_all(wa->wusb);
  95}
  96
  97MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
  98MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
  99MODULE_LICENSE("GPL");
 100