164 lines
4.0 KiB
C
164 lines
4.0 KiB
C
/*
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Broadcom B43 wireless driver
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RFKILL support
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Copyright (c) 2007 Michael Buesch <mb@bu3sch.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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#include "rfkill.h"
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#include "radio.h"
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#include "b43legacy.h"
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#include <linux/kmod.h>
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/* Returns TRUE, if the radio is enabled in hardware. */
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static bool b43legacy_is_hw_radio_enabled(struct b43legacy_wldev *dev)
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{
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if (dev->phy.rev >= 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 1;
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} else {
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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 1;
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}
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return 0;
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}
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/* The poll callback for the hardware button. */
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static void b43legacy_rfkill_poll(struct rfkill *rfkill, void *data)
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{
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struct b43legacy_wldev *dev = data;
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struct b43legacy_wl *wl = dev->wl;
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bool enabled;
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mutex_lock(&wl->mutex);
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if (unlikely(b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)) {
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mutex_unlock(&wl->mutex);
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return;
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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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enabled = !rfkill_set_hw_state(rfkill, !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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mutex_unlock(&wl->mutex);
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}
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/* Called when the RFKILL toggled in software.
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* This is called without locking. */
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static int b43legacy_rfkill_soft_set(void *data, bool blocked)
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{
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struct b43legacy_wldev *dev = data;
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struct b43legacy_wl *wl = dev->wl;
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int ret = -EINVAL;
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if (!wl->rfkill.registered)
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return -EINVAL;
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mutex_lock(&wl->mutex);
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if (b43legacy_status(dev) < B43legacy_STAT_INITIALIZED)
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goto out_unlock;
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if (!dev->radio_hw_enable)
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goto out_unlock;
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if (!blocked != dev->phy.radio_on) {
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if (!blocked)
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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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ret = 0;
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out_unlock:
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mutex_unlock(&wl->mutex);
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return ret;
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}
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const char *b43legacy_rfkill_led_name(struct b43legacy_wldev *dev)
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{
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struct b43legacy_rfkill *rfk = &(dev->wl->rfkill);
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if (!rfk->registered)
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return NULL;
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return rfkill_get_led_trigger_name(rfk->rfkill);
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}
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static const struct rfkill_ops b43legacy_rfkill_ops = {
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.set_block = b43legacy_rfkill_soft_set,
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.poll = b43legacy_rfkill_poll,
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};
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void b43legacy_rfkill_init(struct b43legacy_wldev *dev)
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{
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struct b43legacy_wl *wl = dev->wl;
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struct b43legacy_rfkill *rfk = &(wl->rfkill);
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int err;
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rfk->registered = 0;
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snprintf(rfk->name, sizeof(rfk->name),
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"b43legacy-%s", wiphy_name(wl->hw->wiphy));
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rfk->rfkill = rfkill_alloc(rfk->name,
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dev->dev->dev,
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RFKILL_TYPE_WLAN,
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&b43legacy_rfkill_ops, dev);
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if (!rfk->rfkill)
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goto out_error;
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err = rfkill_register(rfk->rfkill);
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if (err)
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goto err_free;
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rfk->registered = 1;
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return;
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err_free:
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rfkill_destroy(rfk->rfkill);
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out_error:
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rfk->registered = 0;
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b43legacywarn(wl, "RF-kill button init failed\n");
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}
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void b43legacy_rfkill_exit(struct b43legacy_wldev *dev)
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{
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struct b43legacy_rfkill *rfk = &(dev->wl->rfkill);
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if (!rfk->registered)
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return;
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rfk->registered = 0;
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rfkill_unregister(rfk->rfkill);
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rfkill_destroy(rfk->rfkill);
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rfk->rfkill = NULL;
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}
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