/* Copyright (C) 2004 - 2008 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; }