| Zhu Yi | bb9f869 | 2009-05-21 21:20:45 +0800 | [diff] [blame] | 1 | /* |
| 2 | * Intel Wireless Multicomm 3200 WiFi driver |
| 3 | * |
| 4 | * Copyright (C) 2009 Intel Corporation <ilw@linux.intel.com> |
| 5 | * Samuel Ortiz <samuel.ortiz@intel.com> |
| 6 | * Zhu Yi <yi.zhu@intel.com> |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or |
| 9 | * modify it under the terms of the GNU General Public License version |
| 10 | * 2 as published by the Free Software Foundation. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License |
| 18 | * along with this program; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 20 | * 02110-1301, USA. |
| 21 | * |
| 22 | */ |
| 23 | |
| 24 | #include <linux/rfkill.h> |
| 25 | |
| 26 | #include "iwm.h" |
| 27 | |
| 28 | static int iwm_rfkill_soft_toggle(void *data, enum rfkill_state state) |
| 29 | { |
| 30 | struct iwm_priv *iwm = data; |
| 31 | |
| 32 | switch (state) { |
| 33 | case RFKILL_STATE_UNBLOCKED: |
| 34 | if (test_bit(IWM_RADIO_RFKILL_HW, &iwm->radio)) |
| 35 | return -EBUSY; |
| 36 | |
| 37 | if (test_and_clear_bit(IWM_RADIO_RFKILL_SW, &iwm->radio) && |
| 38 | (iwm_to_ndev(iwm)->flags & IFF_UP)) |
| 39 | iwm_up(iwm); |
| 40 | |
| 41 | break; |
| 42 | case RFKILL_STATE_SOFT_BLOCKED: |
| 43 | if (!test_and_set_bit(IWM_RADIO_RFKILL_SW, &iwm->radio)) |
| 44 | iwm_down(iwm); |
| 45 | |
| 46 | break; |
| 47 | default: |
| 48 | break; |
| 49 | } |
| 50 | |
| 51 | return 0; |
| 52 | } |
| 53 | |
| 54 | int iwm_rfkill_init(struct iwm_priv *iwm) |
| 55 | { |
| 56 | int ret; |
| 57 | |
| 58 | iwm->rfkill = rfkill_allocate(iwm_to_dev(iwm), RFKILL_TYPE_WLAN); |
| 59 | if (!iwm->rfkill) { |
| 60 | IWM_ERR(iwm, "Unable to allocate rfkill device\n"); |
| 61 | return -ENOMEM; |
| 62 | } |
| 63 | |
| 64 | iwm->rfkill->name = KBUILD_MODNAME; |
| 65 | iwm->rfkill->data = iwm; |
| 66 | iwm->rfkill->state = RFKILL_STATE_UNBLOCKED; |
| 67 | iwm->rfkill->toggle_radio = iwm_rfkill_soft_toggle; |
| 68 | |
| 69 | ret = rfkill_register(iwm->rfkill); |
| 70 | if (ret) { |
| 71 | IWM_ERR(iwm, "Failed to register rfkill device\n"); |
| 72 | goto fail; |
| 73 | } |
| 74 | |
| 75 | return 0; |
| 76 | fail: |
| 77 | rfkill_free(iwm->rfkill); |
| 78 | return ret; |
| 79 | } |
| 80 | |
| 81 | void iwm_rfkill_exit(struct iwm_priv *iwm) |
| 82 | { |
| 83 | if (iwm->rfkill) |
| 84 | rfkill_unregister(iwm->rfkill); |
| 85 | |
| 86 | rfkill_free(iwm->rfkill); |
| 87 | iwm->rfkill = NULL; |
| 88 | } |