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 } 65