| // 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); |
| } |
