usb: io_ti: Make edge_remove_sysfs_attrs the port_remove method.
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / uwb / pal.c
blob8ee7d90a8c68ac04b97f82a99f1097a114087e01
1 /*
2 * UWB PAL support.
4 * Copyright (C) 2008 Cambridge Silicon Radio Ltd.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License version
8 * 2 as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program. If not, see <http://www.gnu.org/licenses/>.
18 #include <linux/kernel.h>
19 #include <linux/debugfs.h>
20 #include <linux/uwb.h>
21 #include <linux/export.h>
23 #include "uwb-internal.h"
25 /**
26 * uwb_pal_init - initialize a UWB PAL
27 * @pal: the PAL to initialize
29 void uwb_pal_init(struct uwb_pal *pal)
31 INIT_LIST_HEAD(&pal->node);
33 EXPORT_SYMBOL_GPL(uwb_pal_init);
35 /**
36 * uwb_pal_register - register a UWB PAL
37 * @pal: the PAL
39 * The PAL must be initialized with uwb_pal_init().
41 int uwb_pal_register(struct uwb_pal *pal)
43 struct uwb_rc *rc = pal->rc;
44 int ret;
46 if (pal->device) {
47 ret = sysfs_create_link(&pal->device->kobj,
48 &rc->uwb_dev.dev.kobj, "uwb_rc");
49 if (ret < 0)
50 return ret;
51 ret = sysfs_create_link(&rc->uwb_dev.dev.kobj,
52 &pal->device->kobj, pal->name);
53 if (ret < 0) {
54 sysfs_remove_link(&pal->device->kobj, "uwb_rc");
55 return ret;
59 pal->debugfs_dir = uwb_dbg_create_pal_dir(pal);
61 mutex_lock(&rc->uwb_dev.mutex);
62 list_add(&pal->node, &rc->pals);
63 mutex_unlock(&rc->uwb_dev.mutex);
65 return 0;
67 EXPORT_SYMBOL_GPL(uwb_pal_register);
69 /**
70 * uwb_pal_register - unregister a UWB PAL
71 * @pal: the PAL
73 void uwb_pal_unregister(struct uwb_pal *pal)
75 struct uwb_rc *rc = pal->rc;
77 uwb_radio_stop(pal);
79 mutex_lock(&rc->uwb_dev.mutex);
80 list_del(&pal->node);
81 mutex_unlock(&rc->uwb_dev.mutex);
83 debugfs_remove(pal->debugfs_dir);
85 if (pal->device) {
86 sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name);
87 sysfs_remove_link(&pal->device->kobj, "uwb_rc");
90 EXPORT_SYMBOL_GPL(uwb_pal_unregister);
92 /**
93 * uwb_rc_pal_init - initialize the PAL related parts of a radio controller
94 * @rc: the radio controller
96 void uwb_rc_pal_init(struct uwb_rc *rc)
98 INIT_LIST_HEAD(&rc->pals);