mirror of https://gitee.com/openkylin/linux.git
81 lines
2.2 KiB
C
81 lines
2.2 KiB
C
/*
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Broadcom B43 wireless driver
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RFKILL support
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Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "b43.h"
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/* Returns TRUE, if the radio is enabled in hardware. */
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bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
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{
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if (dev->phy.rev >= 3 || dev->phy.type == B43_PHYTYPE_LP) {
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if (!(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
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& B43_MMIO_RADIO_HWENABLED_HI_MASK))
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return 1;
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} else {
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if (b43_status(dev) >= B43_STAT_STARTED &&
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b43_read16(dev, B43_MMIO_RADIO_HWENABLED_LO)
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& B43_MMIO_RADIO_HWENABLED_LO_MASK)
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return 1;
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}
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return 0;
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}
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/* The poll callback for the hardware button. */
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void b43_rfkill_poll(struct ieee80211_hw *hw)
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{
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struct b43_wl *wl = hw_to_b43_wl(hw);
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struct b43_wldev *dev = wl->current_dev;
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struct ssb_bus *bus = dev->dev->bus;
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bool enabled;
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bool brought_up = false;
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mutex_lock(&wl->mutex);
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if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {
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if (ssb_bus_powerup(bus, 0)) {
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mutex_unlock(&wl->mutex);
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return;
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}
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ssb_device_enable(dev->dev, 0);
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brought_up = true;
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}
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enabled = b43_is_hw_radio_enabled(dev);
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if (unlikely(enabled != dev->radio_hw_enable)) {
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dev->radio_hw_enable = enabled;
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b43info(wl, "Radio hardware status changed to %s\n",
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enabled ? "ENABLED" : "DISABLED");
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wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
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if (enabled != dev->phy.radio_on)
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b43_software_rfkill(dev, !enabled);
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}
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if (brought_up) {
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ssb_device_disable(dev->dev, 0);
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ssb_bus_may_powerdown(bus);
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}
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mutex_unlock(&wl->mutex);
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}
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