| /* |
| |
| Broadcom B43 wireless driver |
| RFKILL support |
| |
| Copyright (c) 2007 Michael Buesch <mb@bu3sch.de> |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; see the file COPYING. If not, write to |
| the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, |
| Boston, MA 02110-1301, USA. |
| |
| */ |
| |
| #include "rfkill.h" |
| #include "radio.h" |
| #include "b43legacy.h" |
| |
| #include <linux/kmod.h> |
| |
| |
| /* Returns TRUE, if the radio is enabled in hardware. */ |
| static bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev) |
| { |
| if (dev->phy.rev >= 3) { |
| if (!(b43legacy_read32(dev, B43legacy_MMIO_RADIO_HWENABLED_HI) |
| & B43legacy_MMIO_RADIO_HWENABLED_HI_MASK)) |
| return 1; |
| } else { |
| if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO) |
| & B43legacy_MMIO_RADIO_HWENABLED_LO_MASK) |
| return 1; |
| } |
| return 0; |
| } |
| |
| /* The poll callback for the hardware button. */ |
| static void b43legacy_rfkill_poll(struct rfkill *rfkill, void *data) |
| { |
| struct b43legacy_wldev *dev = data; |
| struct b43legacy_wl *wl = dev->wl; |
| bool enabled; |
| |
| mutex_lock(&wl->mutex); |
| if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) { |
| mutex_unlock(&wl->mutex); |
| return; |
| } |
| enabled = b43legacy_is_hw_radio_enabled(dev); |
| if (unlikely(enabled != dev->radio_hw_enable)) { |
| dev->radio_hw_enable = enabled; |
| b43legacyinfo(wl, "Radio hardware status changed to %s\n", |
| enabled ? "ENABLED" : "DISABLED"); |
| enabled = !rfkill_set_hw_state(rfkill, !enabled); |
| if (enabled != dev->phy.radio_on) { |
| if (enabled) |
| b43legacy_radio_turn_on(dev); |
| else |
| b43legacy_radio_turn_off(dev, 0); |
| } |
| } |
| mutex_unlock(&wl->mutex); |
| } |
| |
| /* Called when the RFKILL toggled in software. |
| * This is called without locking. */ |
| static int b43legacy_rfkill_soft_set(void *data, bool blocked) |
| { |
| struct b43legacy_wldev *dev = data; |
| struct b43legacy_wl *wl = dev->wl; |
| int ret = -EINVAL; |
| |
| if (!wl->rfkill.registered) |
| return -EINVAL; |
| |
| mutex_lock(&wl->mutex); |
| if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED) |
| goto out_unlock; |
| |
| if (!dev->radio_hw_enable) |
| goto out_unlock; |
| |
| if (!blocked != dev->phy.radio_on) { |
| if (!blocked) |
| b43legacy_radio_turn_on(dev); |
| else |
| b43legacy_radio_turn_off(dev, 0); |
| } |
| ret = 0; |
| |
| out_unlock: |
| mutex_unlock(&wl->mutex); |
| return ret; |
| } |
| |
| const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_rfkill *rfk = &(dev->wl->rfkill); |
| |
| if (!rfk->registered) |
| return NULL; |
| return rfkill_get_led_trigger_name(rfk->rfkill); |
| } |
| |
| static const struct rfkill_ops b43legacy_rfkill_ops = { |
| .set_block = b43legacy_rfkill_soft_set, |
| .poll = b43legacy_rfkill_poll, |
| }; |
| |
| void b43legacy_rfkill_init(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_wl *wl = dev->wl; |
| struct b43legacy_rfkill *rfk = &(wl->rfkill); |
| int err; |
| |
| rfk->registered = 0; |
| |
| snprintf(rfk->name, sizeof(rfk->name), |
| "b43legacy-%s", wiphy_name(wl->hw->wiphy)); |
| rfk->rfkill = rfkill_alloc(rfk->name, |
| dev->dev->dev, |
| RFKILL_TYPE_WLAN, |
| &b43legacy_rfkill_ops, dev); |
| if (!rfk->rfkill) |
| goto out_error; |
| |
| err = rfkill_register(rfk->rfkill); |
| if (err) |
| goto err_free; |
| |
| rfk->registered = 1; |
| |
| return; |
| err_free: |
| rfkill_destroy(rfk->rfkill); |
| out_error: |
| rfk->registered = 0; |
| b43legacywarn(wl, "RF-kill button init failed\n"); |
| } |
| |
| void b43legacy_rfkill_exit(struct b43legacy_wldev *dev) |
| { |
| struct b43legacy_rfkill *rfk = &(dev->wl->rfkill); |
| |
| if (!rfk->registered) |
| return; |
| rfk->registered = 0; |
| |
| rfkill_unregister(rfk->rfkill); |
| rfkill_destroy(rfk->rfkill); |
| rfk->rfkill = NULL; |
| } |
| |