git://bbs.cooldavid.org / net-next-2.6.git / blame
| Commit | Line | Data |
|---|---|---|
| 8e9f7529 MB |
1 | /* |
| 2 | ||
| 3 | Broadcom B43 wireless driver | |
| 4 | RFKILL support | |
| 5 | ||
| 6 | Copyright (c) 2007 Michael Buesch <mb@bu3sch.de> | |
| 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 | ||
| 8e9f7529 | 25 | #include "b43.h" |
| 1a8d1227 | 26 | |
| 8e9f7529 | 27 | |
| 42bb4cd5 | 28 | /* Returns TRUE, if the radio is enabled in hardware. */ |
| f41f3f37 | 29 | bool b43_is_hw_radio_enabled(struct b43_wldev *dev) |
| 8e9f7529 | 30 | { |
| 692e565e | 31 | if (dev->phy.rev >= 3 || dev->phy.type == B43_PHYTYPE_LP) { |
| 42bb4cd5 MB |
32 | if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI) |
| 33 | & B43_MMIO_RADIO_HWENABLED_HI_MASK)) | |
| 34 | return 1; | |
| 35 | } else { | |
| c2ff581a LF |
36 | /* To prevent CPU fault on PPC, do not read a register |
| 37 | * unless the interface is started; however, on resume | |
| 38 | * for hibernation, this routine is entered early. When | |
| 39 | * that happens, unconditionally return TRUE. | |
| 40 | */ | |
| 41 | if (b43_status(dev) < B43_STAT_STARTED) | |
| 42 | return 1; | |
| 43 | if (b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO) | |
| 42bb4cd5 MB |
44 | & B43_MMIO_RADIO_HWENABLED_LO_MASK) |
| 45 | return 1; | |
| 8e9f7529 | 46 | } |
| 42bb4cd5 | 47 | return 0; |
| 8e9f7529 MB |
48 | } |
| 49 | ||
| 42bb4cd5 | 50 | /* The poll callback for the hardware button. */ |
| f41f3f37 | 51 | void b43_rfkill_poll(struct ieee80211_hw *hw) |
| 8e9f7529 | 52 | { |
| f41f3f37 JB |
53 | struct b43_wl *wl = hw_to_b43_wl(hw); |
| 54 | struct b43_wldev *dev = wl->current_dev; | |
| 55 | struct ssb_bus *bus = dev->dev->bus; | |
| 42bb4cd5 | 56 | bool enabled; |
| f41f3f37 | 57 | bool brought_up = false; |
| 8e9f7529 | 58 | |
| 42bb4cd5 | 59 | mutex_lock(&wl->mutex); |
| 1a8d1227 | 60 | if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) { |
| f41f3f37 JB |
61 | if (ssb_bus_powerup(bus, 0)) { |
| 62 | mutex_unlock(&wl->mutex); | |
| 63 | return; | |
| 64 | } | |
| 65 | ssb_device_enable(dev->dev, 0); | |
| 66 | brought_up = true; | |
| 1a8d1227 | 67 | } |
| f41f3f37 | 68 | |
| 42bb4cd5 | 69 | enabled = b43_is_hw_radio_enabled(dev); |
| f41f3f37 | 70 | |
| 42bb4cd5 MB |
71 | if (unlikely(enabled != dev->radio_hw_enable)) { |
| 72 | dev->radio_hw_enable = enabled; | |
| 73 | b43info(wl, "Radio hardware status changed to %s\n", | |
| 74 | enabled ? "ENABLED" : "DISABLED"); | |
| f41f3f37 | 75 | wiphy_rfkill_set_hw_state(hw->wiphy, !enabled); |
| 19d337df JB |
76 | if (enabled != dev->phy.radio_on) |
| 77 | b43_software_rfkill(dev, !enabled); | |
| 35c7e660 | 78 | } |
| 8e9f7529 | 79 | |
| f41f3f37 JB |
80 | if (brought_up) { |
| 81 | ssb_device_disable(dev->dev, 0); | |
| 82 | ssb_bus_may_powerdown(bus); | |
| 83 | } | |
| 19d337df | 84 | |
| 8e9f7529 | 85 | mutex_unlock(&wl->mutex); |
| 8e9f7529 | 86 | } |