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ide: pdc202xx_new: Replace timeval with ktime_t
[karo-tx-linux.git] / drivers / net / wireless / realtek / rtl818x / rtl8187 / rfkill.c
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
23 static 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
34 void 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
45 void 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
61 void rtl8187_rfkill_exit(struct ieee80211_hw *hw)
62 {
63         wiphy_rfkill_stop_polling(hw->wiphy);
64 }