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