1 /* 2 3 Broadcom B43 wireless driver 4 RFKILL support 5 6 Copyright (c) 2007 Michael Buesch <m@bues.ch> 7 8 This program is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2 of the License, or 11 (at your option) any later version. 12 13 This program is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with this program; see the file COPYING. If not, write to 20 the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, 21 Boston, MA 02110-1301, USA. 22 23 */ 24 25 #include "b43.h" 26 27 28 /* Returns TRUE, if the radio is enabled in hardware. */ 29 bool b43_is_hw_radio_enabled(struct b43_wldev *dev) 30 { 31 return !(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI) 32 & B43_MMIO_RADIO_HWENABLED_HI_MASK); 33 } 34 35 /* The poll callback for the hardware button. */ 36 void b43_rfkill_poll(struct ieee80211_hw *hw) 37 { 38 struct b43_wl *wl = hw_to_b43_wl(hw); 39 struct b43_wldev *dev = wl->current_dev; 40 bool enabled; 41 bool brought_up = false; 42 43 mutex_lock(&wl->mutex); 44 if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) { 45 if (b43_bus_powerup(dev, 0)) { 46 mutex_unlock(&wl->mutex); 47 return; 48 } 49 b43_device_enable(dev, 0); 50 brought_up = true; 51 } 52 53 enabled = b43_is_hw_radio_enabled(dev); 54 55 if (unlikely(enabled != dev->radio_hw_enable)) { 56 dev->radio_hw_enable = enabled; 57 b43info(wl, "Radio hardware status changed to %s\n", 58 enabled ? "ENABLED" : "DISABLED"); 59 wiphy_rfkill_set_hw_state(hw->wiphy, !enabled); 60 if (enabled != dev->phy.radio_on) 61 b43_software_rfkill(dev, !enabled); 62 } 63 64 if (brought_up) { 65 b43_device_disable(dev, 0); 66 b43_bus_may_powerdown(dev); 67 } 68 69 mutex_unlock(&wl->mutex); 70 } 71