mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-11-30 08:56:45 +07:00
92 lines
2.6 KiB
C
92 lines
2.6 KiB
C
/*
|
|
|
|
Broadcom B43 wireless driver
|
|
RFKILL support
|
|
|
|
Copyright (c) 2007 Michael Buesch <m@bues.ch>
|
|
|
|
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 1;
|
|
} 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 1;
|
|
if (b43legacy_read16(dev, B43legacy_MMIO_RADIO_HWENABLED_LO)
|
|
& B43legacy_MMIO_RADIO_HWENABLED_LO_MASK)
|
|
return 1;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* 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);
|
|
}
|