1/*
2 * Linux RFKILL support for RTL8187
3 *
4 * Copyright (c) 2009 Herton Ronaldo Krzesinski <herton@mandriva.com.br>
5 *
6 * Based on the RFKILL handling in the r8187 driver, which is:
7 * Copyright (c) Realtek Semiconductor Corp. All rights reserved.
8 *
9 * Thanks to Realtek for their support!
10 *
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License version 2 as
13 * published by the Free Software Foundation.
14 */
15
16#include <linux/types.h>
17#include <linux/usb.h>
18#include <net/mac80211.h>
19
20#include "rtl8187.h"
21#include "rfkill.h"
22
23static bool rtl8187_is_radio_enabled(struct rtl8187_priv *priv)
24{
25	u8 gpio;
26
27	gpio = rtl818x_ioread8(priv, &priv->map->GPIO0);
28	rtl818x_iowrite8(priv, &priv->map->GPIO0, gpio & ~priv->rfkill_mask);
29	gpio = rtl818x_ioread8(priv, &priv->map->GPIO1);
30
31	return gpio & priv->rfkill_mask;
32}
33
34void rtl8187_rfkill_init(struct ieee80211_hw *hw)
35{
36	struct rtl8187_priv *priv = hw->priv;
37
38	priv->rfkill_off = rtl8187_is_radio_enabled(priv);
39	printk(KERN_INFO "rtl8187: wireless switch is %s\n",
40	       priv->rfkill_off ? "on" : "off");
41	wiphy_rfkill_set_hw_state(hw->wiphy, !priv->rfkill_off);
42	wiphy_rfkill_start_polling(hw->wiphy);
43}
44
45void rtl8187_rfkill_poll(struct ieee80211_hw *hw)
46{
47	bool enabled;
48	struct rtl8187_priv *priv = hw->priv;
49
50	mutex_lock(&priv->conf_mutex);
51	enabled = rtl8187_is_radio_enabled(priv);
52	if (unlikely(enabled != priv->rfkill_off)) {
53		priv->rfkill_off = enabled;
54		printk(KERN_INFO "rtl8187: wireless radio switch turned %s\n",
55		       enabled ? "on" : "off");
56		wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
57	}
58	mutex_unlock(&priv->conf_mutex);
59}
60
61void rtl8187_rfkill_exit(struct ieee80211_hw *hw)
62{
63	wiphy_rfkill_stop_polling(hw->wiphy);
64}
65