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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 4 Broadcom B43 wireless driver5 RFKILL support6 7 Copyright (c) 2007 Michael Buesch <m@bues.ch>8 9 10*/11 12#include "b43.h"13 14 15/* Returns TRUE, if the radio is enabled in hardware. */16bool b43_is_hw_radio_enabled(struct b43_wldev *dev)17{18 return !(b43_read32(dev, B43_MMIO_RADIO_HWENABLED_HI)19 & B43_MMIO_RADIO_HWENABLED_HI_MASK);20}21 22/* The poll callback for the hardware button. */23void b43_rfkill_poll(struct ieee80211_hw *hw)24{25 struct b43_wl *wl = hw_to_b43_wl(hw);26 struct b43_wldev *dev = wl->current_dev;27 bool enabled;28 bool brought_up = false;29 30 mutex_lock(&wl->mutex);31 if (unlikely(b43_status(dev) < B43_STAT_INITIALIZED)) {32 if (b43_bus_powerup(dev, 0)) {33 mutex_unlock(&wl->mutex);34 return;35 }36 b43_device_enable(dev, 0);37 brought_up = true;38 }39 40 enabled = b43_is_hw_radio_enabled(dev);41 42 if (unlikely(enabled != dev->radio_hw_enable)) {43 dev->radio_hw_enable = enabled;44 b43info(wl, "Radio hardware status changed to %s\n",45 enabled ? "ENABLED" : "DISABLED");46 wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);47 if (enabled != dev->phy.radio_on)48 b43_software_rfkill(dev, !enabled);49 }50 51 if (brought_up) {52 b43_device_disable(dev, 0);53 b43_bus_may_powerdown(dev);54 }55 56 mutex_unlock(&wl->mutex);57}58