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183b9b59 IPG |
1 | /* |
2 | * UWB PAL support. | |
3 | * | |
4 | * Copyright (C) 2008 Cambridge Silicon Radio Ltd. | |
5 | * | |
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. | |
9 | * | |
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. | |
14 | * | |
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/>. | |
17 | */ | |
18 | #include <linux/kernel.h> | |
dcc7461e | 19 | #include <linux/debugfs.h> |
183b9b59 IPG |
20 | #include <linux/uwb.h> |
21 | ||
22 | #include "uwb-internal.h" | |
23 | ||
24 | /** | |
25 | * uwb_pal_init - initialize a UWB PAL | |
26 | * @pal: the PAL to initialize | |
27 | */ | |
28 | void uwb_pal_init(struct uwb_pal *pal) | |
29 | { | |
30 | INIT_LIST_HEAD(&pal->node); | |
31 | } | |
32 | EXPORT_SYMBOL_GPL(uwb_pal_init); | |
33 | ||
34 | /** | |
35 | * uwb_pal_register - register a UWB PAL | |
183b9b59 IPG |
36 | * @pal: the PAL |
37 | * | |
38 | * The PAL must be initialized with uwb_pal_init(). | |
39 | */ | |
6fae35f9 | 40 | int uwb_pal_register(struct uwb_pal *pal) |
183b9b59 | 41 | { |
6fae35f9 | 42 | struct uwb_rc *rc = pal->rc; |
b60066c1 DV |
43 | int ret; |
44 | ||
45 | if (pal->device) { | |
46 | ret = sysfs_create_link(&pal->device->kobj, | |
47 | &rc->uwb_dev.dev.kobj, "uwb_rc"); | |
48 | if (ret < 0) | |
49 | return ret; | |
50 | ret = sysfs_create_link(&rc->uwb_dev.dev.kobj, | |
51 | &pal->device->kobj, pal->name); | |
52 | if (ret < 0) { | |
53 | sysfs_remove_link(&pal->device->kobj, "uwb_rc"); | |
54 | return ret; | |
55 | } | |
56 | } | |
57 | ||
dcc7461e DV |
58 | pal->debugfs_dir = uwb_dbg_create_pal_dir(pal); |
59 | ||
6fae35f9 | 60 | mutex_lock(&rc->uwb_dev.mutex); |
183b9b59 | 61 | list_add(&pal->node, &rc->pals); |
6fae35f9 | 62 | mutex_unlock(&rc->uwb_dev.mutex); |
183b9b59 IPG |
63 | |
64 | return 0; | |
65 | } | |
66 | EXPORT_SYMBOL_GPL(uwb_pal_register); | |
67 | ||
68 | /** | |
69 | * uwb_pal_register - unregister a UWB PAL | |
183b9b59 IPG |
70 | * @pal: the PAL |
71 | */ | |
6fae35f9 | 72 | void uwb_pal_unregister(struct uwb_pal *pal) |
183b9b59 | 73 | { |
6fae35f9 DV |
74 | struct uwb_rc *rc = pal->rc; |
75 | ||
76 | uwb_radio_stop(pal); | |
77 | ||
78 | mutex_lock(&rc->uwb_dev.mutex); | |
183b9b59 | 79 | list_del(&pal->node); |
6fae35f9 | 80 | mutex_unlock(&rc->uwb_dev.mutex); |
b60066c1 | 81 | |
dcc7461e DV |
82 | debugfs_remove(pal->debugfs_dir); |
83 | ||
b60066c1 DV |
84 | if (pal->device) { |
85 | sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); | |
86 | sysfs_remove_link(&pal->device->kobj, "uwb_rc"); | |
87 | } | |
183b9b59 IPG |
88 | } |
89 | EXPORT_SYMBOL_GPL(uwb_pal_unregister); | |
90 | ||
91 | /** | |
92 | * uwb_rc_pal_init - initialize the PAL related parts of a radio controller | |
93 | * @rc: the radio controller | |
94 | */ | |
95 | void uwb_rc_pal_init(struct uwb_rc *rc) | |
96 | { | |
183b9b59 IPG |
97 | INIT_LIST_HEAD(&rc->pals); |
98 | } |