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        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
  66error_nep_create:
  67        kfree(wa->dti_buf);
  68error_dti_buf_alloc:
  69        wa_rpipes_destroy(wa);
  70error_rpipes_create:
  71        return result;
  72}
  73EXPORT_SYMBOL_GPL(wa_create);
  74
  75
  76void __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}
  86EXPORT_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 */
  94void wa_reset_all(struct wahc *wa)
  95{
  96        /* FIXME: assuming HWA. */
  97        wusbhc_reset_all(wa->wusb);
  98}
  99
 100MODULE_AUTHOR("Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>");
 101MODULE_DESCRIPTION("Wireless USB Wire Adapter core");
 102MODULE_LICENSE("GPL");
 103