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// SPDX-License-Identifier: GPL-2.0-or-later
/*
Broadcom B43 wireless driver
RFKILL support
Copyright (c) 2007 Michael Buesch <m@bues.ch>
*/
#include "b43.h"
/* Returns TRUE, if the radio is enabled in hardware. */
bool b43_is_hw_radio_enabled(struct b43_wldev *dev)
{
return !(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)
& B43_MMIO_RADIO_HWENABLED_HI_MASK);
}
/* The poll callback for the hardware button. */
void b43_rfkill_poll(struct ieee80211_hw *hw)
{
struct b43_wl *wl = hw_to_b43_wl(hw);
struct b43_wldev *dev = wl->current_dev;
bool enabled;
bool brought_up = false;
mutex_lock(&wl->mutex);
if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {
if (b43_bus_powerup(dev, 0)) {
mutex_unlock(&wl->mutex);
return;
}
b43_device_enable(dev, 0);
brought_up = true;
}
enabled = b43_is_hw_radio_enabled(dev);
if (unlikely(enabled != dev->radio_hw_enable)) {
dev->radio_hw_enable = enabled;
b43info(wl, "Radio hardware status changed to %s\n",
enabled ? "ENABLED" : "DISABLED");
wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
if (enabled != dev->phy.radio_on)
b43_software_rfkill(dev, !enabled);
}
if (brought_up) {
b43_device_disable(dev, 0);
b43_bus_may_powerdown(dev);
}
mutex_unlock(&wl->mutex);
}
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