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kernel/linux-rt-4.4.41/drivers/usb/wusbcore/pal.c 1.58 KB
5113f6f70   김현기   kernel add
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  /*
   * Wireless USB Host Controller
   * UWB Protocol Adaptation Layer (PAL) glue.
   *
   * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
   *
   * This program is free software; you can redistribute it and/or
   * modify it under the terms of the GNU General Public License version
   * 2 as published by the Free Software Foundation.
   *
   * This program is distributed in the hope that it will be useful,
   * but WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   * GNU General Public License for more details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this program.  If not, see <http://www.gnu.org/licenses/>.
   */
  #include "wusbhc.h"
  
  static void wusbhc_channel_changed(struct uwb_pal *pal, int channel)
  {
  	struct wusbhc *wusbhc = container_of(pal, struct wusbhc, pal);
  
  	dev_dbg(wusbhc->dev, "%s: channel = %d
  ", __func__, channel);
  	if (channel < 0)
  		wusbhc_stop(wusbhc);
  	else
  		wusbhc_start(wusbhc);
  }
  
  /**
   * wusbhc_pal_register - register the WUSB HC as a UWB PAL
   * @wusbhc: the WUSB HC
   */
  int wusbhc_pal_register(struct wusbhc *wusbhc)
  {
  	uwb_pal_init(&wusbhc->pal);
  
  	wusbhc->pal.name   = "wusbhc";
  	wusbhc->pal.device = wusbhc->usb_hcd.self.controller;
  	wusbhc->pal.rc     = wusbhc->uwb_rc;
  	wusbhc->pal.channel_changed = wusbhc_channel_changed;
  
  	return uwb_pal_register(&wusbhc->pal);
  }
  
  /**
   * wusbhc_pal_unregister - unregister the WUSB HC as a UWB PAL
   * @wusbhc: the WUSB HC
   */
  void wusbhc_pal_unregister(struct wusbhc *wusbhc)
  {
  	if (wusbhc->uwb_rc)
  		uwb_pal_unregister(&wusbhc->pal);
  }