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| 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> |
| 19 | #include <linux/debugfs.h> |
| 20 | #include <linux/uwb.h> |
| 21 | #include <linux/export.h> |
| 22 | |
| 23 | #include "uwb-internal.h" |
| 24 | |
| 25 | /** |
| 26 | * uwb_pal_init - initialize a UWB PAL |
| 27 | * @pal: the PAL to initialize |
| 28 | */ |
| 29 | void uwb_pal_init(struct uwb_pal *pal) |
| 30 | { |
| 31 | INIT_LIST_HEAD(&pal->node); |
| 32 | } |
| 33 | EXPORT_SYMBOL_GPL(uwb_pal_init); |
| 34 | |
| 35 | /** |
| 36 | * uwb_pal_register - register a UWB PAL |
| 37 | * @pal: the PAL |
| 38 | * |
| 39 | * The PAL must be initialized with uwb_pal_init(). |
| 40 | */ |
| 41 | int uwb_pal_register(struct uwb_pal *pal) |
| 42 | { |
| 43 | struct uwb_rc *rc = pal->rc; |
| 44 | int ret; |
| 45 | |
| 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; |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | pal->debugfs_dir = uwb_dbg_create_pal_dir(pal); |
| 60 | |
| 61 | mutex_lock(&rc->uwb_dev.mutex); |
| 62 | list_add(&pal->node, &rc->pals); |
| 63 | mutex_unlock(&rc->uwb_dev.mutex); |
| 64 | |
| 65 | return 0; |
| 66 | } |
| 67 | EXPORT_SYMBOL_GPL(uwb_pal_register); |
| 68 | |
| 69 | /** |
| 70 | * uwb_pal_register - unregister a UWB PAL |
| 71 | * @pal: the PAL |
| 72 | */ |
| 73 | void uwb_pal_unregister(struct uwb_pal *pal) |
| 74 | { |
| 75 | struct uwb_rc *rc = pal->rc; |
| 76 | |
| 77 | uwb_radio_stop(pal); |
| 78 | |
| 79 | mutex_lock(&rc->uwb_dev.mutex); |
| 80 | list_del(&pal->node); |
| 81 | mutex_unlock(&rc->uwb_dev.mutex); |
| 82 | |
| 83 | debugfs_remove(pal->debugfs_dir); |
| 84 | |
| 85 | if (pal->device) { |
| 86 | sysfs_remove_link(&rc->uwb_dev.dev.kobj, pal->name); |
| 87 | sysfs_remove_link(&pal->device->kobj, "uwb_rc"); |
| 88 | } |
| 89 | } |
| 90 | EXPORT_SYMBOL_GPL(uwb_pal_unregister); |
| 91 | |
| 92 | /** |
| 93 | * uwb_rc_pal_init - initialize the PAL related parts of a radio controller |
| 94 | * @rc: the radio controller |
| 95 | */ |
| 96 | void uwb_rc_pal_init(struct uwb_rc *rc) |
| 97 | { |
| 98 | INIT_LIST_HEAD(&rc->pals); |
| 99 | } |
| 100 |
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Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
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v3.9
