From 52409fae3e4b8d16b68b61902fc09075cd97b75d Mon Sep 17 00:00:00 2001 From: Dominik Sliwa Date: Sun, 2 Jul 2017 16:41:37 +0200 Subject: Backports generated from 4.11 kernel Initial commit. Signed-off-by: Dominik Sliwa --- drivers/net/wireless/broadcom/b43legacy/rfkill.c | 91 ++++++++++++++++++++++++ 1 file changed, 91 insertions(+) create mode 100644 drivers/net/wireless/broadcom/b43legacy/rfkill.c (limited to 'drivers/net/wireless/broadcom/b43legacy/rfkill.c') diff --git a/drivers/net/wireless/broadcom/b43legacy/rfkill.c b/drivers/net/wireless/broadcom/b43legacy/rfkill.c new file mode 100644 index 0000000..7c1bdbc --- /dev/null +++ b/drivers/net/wireless/broadcom/b43legacy/rfkill.c @@ -0,0 +1,91 @@ +/* + + Broadcom B43 wireless driver + RFKILL support + + Copyright (c) 2007 Michael Buesch + + This program is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation; either version 2 of the License, or + (at your option) any later version. + + This program is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with this program; see the file COPYING. If not, write to + the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor, + Boston, MA 02110-1301, USA. + +*/ + +#include "radio.h" +#include "b43legacy.h" + + +/* Returns TRUE, if the radio is enabled in hardware. */ +bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev) +{ + if (dev->dev->id.revision >= 3) { + if (!(b43legacy_read32(dev, B43legacy_MMIO_RADIO_HWENABLED_HI) + & B43legacy_MMIO_RADIO_HWENABLED_HI_MASK)) + return true; + } else { + /* To prevent CPU fault on PPC, do not read a register + * unless the interface is started; however, on resume + * for hibernation, this routine is entered early. When + * that happens, unconditionally return TRUE. + */ + if (b43legacy_status(dev) < B43legacy_STAT_STARTED) + return true; + if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO) + & B43legacy_MMIO_RADIO_HWENABLED_LO_MASK) + return true; + } + return false; +} + +/* The poll callback for the hardware button. */ +void b43legacy_rfkill_poll(struct ieee80211_hw *hw) +{ + struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw); + struct b43legacy_wldev *dev = wl->current_dev; + struct ssb_bus *bus = dev->dev->bus; + bool enabled; + bool brought_up = false; + + mutex_lock(&wl->mutex); + if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) { + if (ssb_bus_powerup(bus, 0)) { + mutex_unlock(&wl->mutex); + return; + } + ssb_device_enable(dev->dev, 0); + brought_up = true; + } + + enabled = b43legacy_is_hw_radio_enabled(dev); + + if (unlikely(enabled != dev->radio_hw_enable)) { + dev->radio_hw_enable = enabled; + b43legacyinfo(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) { + if (enabled) + b43legacy_radio_turn_on(dev); + else + b43legacy_radio_turn_off(dev, 0); + } + } + + if (brought_up) { + ssb_device_disable(dev->dev, 0); + ssb_bus_may_powerdown(bus); + } + + mutex_unlock(&wl->mutex); +} -- cgit v1.2.3