LXR linux/drivers/usb/wusbcore/pal.c

   1/*
   2 * Wireless USB Host Controller
   3 * UWB Protocol Adaptation Layer (PAL) glue.
   4 *
   5 * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
   6 *
   7 * This program is free software; you can redistribute it and/or
   8 * modify it under the terms of the GNU General Public License version
   9 * 2 as published by the Free Software Foundation.
  10 *
  11 * This program is distributed in the hope that it will be useful,
  12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 * GNU General Public License for more details.
  15 *
  16 * You should have received a copy of the GNU General Public License
  17 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19#include "wusbhc.h"
  20
  21static void wusbhc_channel_changed(struct uwb_pal *pal, int channel)
  22{
  23        struct wusbhc *wusbhc = container_of(pal, struct wusbhc, pal);
  24
  25        if (channel < 0)
  26                wusbhc_stop(wusbhc);
  27        else
  28                wusbhc_start(wusbhc);
  29}
  30
  31/**
  32 * wusbhc_pal_register - register the WUSB HC as a UWB PAL
  33 * @wusbhc: the WUSB HC
  34 */
  35int wusbhc_pal_register(struct wusbhc *wusbhc)
  36{
  37        uwb_pal_init(&wusbhc->pal);
  38
  39        wusbhc->pal.name   = "wusbhc";
  40        wusbhc->pal.device = wusbhc->usb_hcd.self.controller;
  41        wusbhc->pal.rc     = wusbhc->uwb_rc;
  42        wusbhc->pal.channel_changed = wusbhc_channel_changed;
  43
  44        return uwb_pal_register(&wusbhc->pal);
  45}
  46
  47/**
  48 * wusbhc_pal_unregister - unregister the WUSB HC as a UWB PAL
  49 * @wusbhc: the WUSB HC
  50 */
  51void wusbhc_pal_unregister(struct wusbhc *wusbhc)
  52{
  53        if (wusbhc->uwb_rc)
  54                uwb_pal_unregister(&wusbhc->pal);
  55}
  56