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/******************************************************************************
*
* Copyright(c) 2003 - 2008 Intel Corporation. All rights reserved.
*
* Portions of this file are derived from the ipw3945 project, as well
* as portions of the ieee80211 subsystem header files.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
*
* The full GNU General Public License is included in this distribution in the
* file called LICENSE.
*
* Contact Information:
* James P. Ketrenos <ipw2100-admin@linux.intel.com>
* Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
*****************************************************************************/
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/version.h>
#include <linux/init.h>
#include <net/mac80211.h>
#include "iwl-eeprom.h"
#include "iwl-core.h"
#include "iwl-4965.h"
#include "iwl-helpers.h"
static inline int iwl_is_rfkill(struct iwl_priv *priv)
{
return test_bit(STATUS_RF_KILL_HW, &priv->status) ||
test_bit(STATUS_RF_KILL_SW, &priv->status);
}
/* software rf-kill from user */
static int iwl_rfkill_soft_rf_kill(void *data, enum rfkill_state state)
{
struct iwl_priv *priv = data;
int err = 0;
if (!priv->rfkill_mngr.rfkill)
return 0;
IWL_DEBUG_RF_KILL("we recieved soft RFKILL set to state %d\n", state);
mutex_lock(&priv->mutex);
switch (state) {
case RFKILL_STATE_ON:
priv->cfg->ops->lib->radio_kill_sw(priv, 0);
/* if HW rf-kill is set dont allow ON state */
if (iwl_is_rfkill(priv))
err = -EBUSY;
break;
case RFKILL_STATE_OFF:
priv->cfg->ops->lib->radio_kill_sw(priv, 1);
if (!iwl_is_rfkill(priv))
err = -EBUSY;
break;
}
mutex_unlock(&priv->mutex);
return err;
}
int iwl_rfkill_init(struct iwl_priv *priv)
{
struct device *device = wiphy_dev(priv->hw->wiphy);
int ret = 0;
BUG_ON(device == NULL);
priv->rfkill_mngr.rfkill = rfkill_allocate(device, RFKILL_TYPE_WLAN);
if (!priv->rfkill_mngr.rfkill) {
ret = -ENOMEM;
goto error;
}
priv->rfkill_mngr.rfkill->name = priv->cfg->name;
priv->rfkill_mngr.rfkill->data = priv;
priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
priv->rfkill_mngr.rfkill->toggle_radio = iwl_rfkill_soft_rf_kill;
priv->rfkill_mngr.rfkill->user_claim_unsupported = 1;
priv->rfkill_mngr.rfkill->dev.class->suspend = NULL;
priv->rfkill_mngr.rfkill->dev.class->resume = NULL;
priv->rfkill_mngr.input_dev = input_allocate_device();
if (!priv->rfkill_mngr.input_dev) {
ret = -ENOMEM;
goto freed_rfkill;
}
priv->rfkill_mngr.input_dev->name = priv->cfg->name;
priv->rfkill_mngr.input_dev->phys = wiphy_name(priv->hw->wiphy);
priv->rfkill_mngr.input_dev->id.bustype = BUS_HOST;
priv->rfkill_mngr.input_dev->id.vendor = priv->pci_dev->vendor;
priv->rfkill_mngr.input_dev->dev.parent = device;
priv->rfkill_mngr.input_dev->evbit[0] = BIT(EV_KEY);
set_bit(KEY_WLAN, priv->rfkill_mngr.input_dev->keybit);
ret = rfkill_register(priv->rfkill_mngr.rfkill);
if (ret)
goto free_input_dev;
ret = input_register_device(priv->rfkill_mngr.input_dev);
if (ret)
goto unregister_rfkill;
return ret;
unregister_rfkill:
rfkill_unregister(priv->rfkill_mngr.rfkill);
free_input_dev:
input_free_device(priv->rfkill_mngr.input_dev);
priv->rfkill_mngr.input_dev = NULL;
freed_rfkill:
rfkill_free(priv->rfkill_mngr.rfkill);
priv->rfkill_mngr.rfkill = NULL;
error:
return ret;
}
EXPORT_SYMBOL(iwl_rfkill_init);
void iwl_rfkill_unregister(struct iwl_priv *priv)
{
if (priv->rfkill_mngr.input_dev)
input_unregister_device(priv->rfkill_mngr.input_dev);
if (priv->rfkill_mngr.rfkill)
rfkill_unregister(priv->rfkill_mngr.rfkill);
}
EXPORT_SYMBOL(iwl_rfkill_unregister);
void iwl_rfkill_free(struct iwl_priv *priv)
{
if (priv->rfkill_mngr.input_dev)
input_free_device(priv->rfkill_mngr.input_dev);
if (priv->rfkill_mngr.rfkill)
rfkill_free(priv->rfkill_mngr.rfkill);
}
EXPORT_SYMBOL(iwl_rfkill_free);
/* set rf-kill to the right state. */
void iwl_rfkill_set_hw_state(struct iwl_priv *priv)
{
if (!priv->rfkill_mngr.rfkill)
return;
if (!iwl_is_rfkill(priv))
priv->rfkill_mngr.rfkill->state = RFKILL_STATE_ON;
else
priv->rfkill_mngr.rfkill->state = RFKILL_STATE_OFF;
}
EXPORT_SYMBOL(iwl_rfkill_set_hw_state);
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