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ca47d34458
Based on 1 normalized pattern(s): 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 extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 41 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154042.524645346@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
79 lines
1.9 KiB
C
79 lines
1.9 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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Broadcom B43 wireless driver
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RFKILL support
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Copyright (c) 2007 Michael Buesch <m@bues.ch>
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*/
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#include "radio.h"
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#include "b43legacy.h"
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/* Returns TRUE, if the radio is enabled in hardware. */
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bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev)
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{
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if (dev->dev->id.revision >= 3) {
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if (!(b43legacy_read32(dev, B43legacy_MMIO_RADIO_HWENABLED_HI)
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& B43legacy_MMIO_RADIO_HWENABLED_HI_MASK))
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return true;
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} else {
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/* To prevent CPU fault on PPC, do not read a register
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* unless the interface is started; however, on resume
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* for hibernation, this routine is entered early. When
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* that happens, unconditionally return TRUE.
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*/
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if (b43legacy_status(dev) < B43legacy_STAT_STARTED)
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return true;
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if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO)
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& B43legacy_MMIO_RADIO_HWENABLED_LO_MASK)
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return true;
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}
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return false;
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}
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/* The poll callback for the hardware button. */
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void b43legacy_rfkill_poll(struct ieee80211_hw *hw)
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{
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struct b43legacy_wl *wl = hw_to_b43legacy_wl(hw);
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struct b43legacy_wldev *dev = wl->current_dev;
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struct ssb_bus *bus = dev->dev->bus;
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bool enabled;
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bool brought_up = false;
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mutex_lock(&wl->mutex);
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if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) {
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if (ssb_bus_powerup(bus, 0)) {
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mutex_unlock(&wl->mutex);
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return;
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}
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ssb_device_enable(dev->dev, 0);
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brought_up = true;
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}
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enabled = b43legacy_is_hw_radio_enabled(dev);
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if (unlikely(enabled != dev->radio_hw_enable)) {
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dev->radio_hw_enable = enabled;
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b43legacyinfo(wl, "Radio hardware status changed to %s\n",
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enabled ? "ENABLED" : "DISABLED");
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wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
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if (enabled != dev->phy.radio_on) {
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if (enabled)
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b43legacy_radio_turn_on(dev);
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else
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b43legacy_radio_turn_off(dev, 0);
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}
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}
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if (brought_up) {
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ssb_device_disable(dev->dev, 0);
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ssb_bus_may_powerdown(bus);
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}
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mutex_unlock(&wl->mutex);
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}
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