| // 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); | |
| } |