diff options
Diffstat (limited to 'drivers/net/wireless/broadcom/b43/rfkill.c')
| -rw-r--r-- | drivers/net/wireless/broadcom/b43/rfkill.c | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/drivers/net/wireless/broadcom/b43/rfkill.c b/drivers/net/wireless/broadcom/b43/rfkill.c new file mode 100644 index 000000000..f0c968703 --- /dev/null +++ b/drivers/net/wireless/broadcom/b43/rfkill.c @@ -0,0 +1,57 @@ +// 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); +} |