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/*
Copyright (C) 2004 - 2009 rt2x00 SourceForge Project
<http://rt2x00.serialmonkey.com>
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; if not, write to the
Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
Module: rt2x00rfkill
Abstract: rt2x00 rfkill routines.
*/
#include <linux/kernel.h>
#include <linux/module.h>
#include "rt2x00.h"
#include "rt2x00lib.h"
static void rt2x00rfkill_poll(struct input_polled_dev *poll_dev)
{
struct rt2x00_dev *rt2x00dev = poll_dev->private;
int state, old_state;
if (!test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state) ||
!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags))
return;
/*
* Poll latest state, if the state is different then the previous state,
* we should generate an input event.
*/
state = !!rt2x00dev->ops->lib->rfkill_poll(rt2x00dev);
old_state = !!test_bit(RFKILL_STATE_BLOCKED, &rt2x00dev->rfkill_state);
if (old_state != state) {
input_report_switch(poll_dev->input, SW_RFKILL_ALL, state);
change_bit(RFKILL_STATE_BLOCKED, &rt2x00dev->rfkill_state);
}
}
void rt2x00rfkill_register(struct rt2x00_dev *rt2x00dev)
{
if (!test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state) ||
test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state))
return;
if (input_register_polled_device(rt2x00dev->rfkill_poll_dev)) {
ERROR(rt2x00dev, "Failed to register polled device.\n");
return;
}
__set_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state);
/*
* Force initial poll which will detect the initial device state,
* and correctly sends the signal to the input layer about this
* state.
*/
rt2x00rfkill_poll(rt2x00dev->rfkill_poll_dev);
}
void rt2x00rfkill_unregister(struct rt2x00_dev *rt2x00dev)
{
if (!test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state) ||
!test_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state))
return;
input_unregister_polled_device(rt2x00dev->rfkill_poll_dev);
__clear_bit(RFKILL_STATE_REGISTERED, &rt2x00dev->rfkill_state);
}
void rt2x00rfkill_allocate(struct rt2x00_dev *rt2x00dev)
{
struct input_polled_dev *poll_dev;
if (test_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state) ||
!test_bit(CONFIG_SUPPORT_HW_BUTTON, &rt2x00dev->flags))
return;
poll_dev = input_allocate_polled_device();
if (!poll_dev) {
ERROR(rt2x00dev, "Failed to allocate polled device.\n");
return;
}
poll_dev->private = rt2x00dev;
poll_dev->poll = rt2x00rfkill_poll;
poll_dev->poll_interval = RFKILL_POLL_INTERVAL;
poll_dev->input->name = rt2x00dev->ops->name;
poll_dev->input->phys = wiphy_name(rt2x00dev->hw->wiphy);
poll_dev->input->id.bustype = BUS_HOST;
poll_dev->input->id.vendor = 0x1814;
poll_dev->input->id.product = rt2x00dev->chip.rt;
poll_dev->input->id.version = rt2x00dev->chip.rev;
poll_dev->input->dev.parent = wiphy_dev(rt2x00dev->hw->wiphy);
poll_dev->input->evbit[0] = BIT(EV_SW);
poll_dev->input->swbit[0] = BIT(SW_RFKILL_ALL);
rt2x00dev->rfkill_poll_dev = poll_dev;
__set_bit(RFKILL_STATE_ALLOCATED, &rt2x00dev->rfkill_state);
}
void rt2x00rfkill_free(struct rt2x00_dev *rt2x00dev)
{
if (!__test_and_clear_bit(RFKILL_STATE_ALLOCATED,
&rt2x00dev->rfkill_state))
return;
input_free_polled_device(rt2x00dev->rfkill_poll_dev);
rt2x00dev->rfkill_poll_dev = NULL;
}
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