p54: Use SKB list handling helpers instead of by-hand code.
[linux-2.6] / 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
21 static 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  */
35 int 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_register - unregister the WUSB HC as a UWB PAL
49  * @wusbhc: the WUSB HC
50  */
51 void wusbhc_pal_unregister(struct wusbhc *wusbhc)
52 {
53         uwb_pal_unregister(&wusbhc->pal);
54 }