cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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rfkill.c (1620B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Linux RFKILL support for RTL8187
      4 *
      5 * Copyright (c) 2009 Herton Ronaldo Krzesinski <herton@mandriva.com.br>
      6 *
      7 * Based on the RFKILL handling in the r8187 driver, which is:
      8 * Copyright (c) Realtek Semiconductor Corp. All rights reserved.
      9 *
     10 * Thanks to Realtek for their support!
     11 */
     12
     13#include <linux/types.h>
     14#include <linux/usb.h>
     15#include <net/mac80211.h>
     16
     17#include "rtl8187.h"
     18#include "rfkill.h"
     19
     20static bool rtl8187_is_radio_enabled(struct rtl8187_priv *priv)
     21{
     22	u8 gpio;
     23
     24	gpio = rtl818x_ioread8(priv, &priv->map->GPIO0);
     25	rtl818x_iowrite8(priv, &priv->map->GPIO0, gpio & ~priv->rfkill_mask);
     26	gpio = rtl818x_ioread8(priv, &priv->map->GPIO1);
     27
     28	return gpio & priv->rfkill_mask;
     29}
     30
     31void rtl8187_rfkill_init(struct ieee80211_hw *hw)
     32{
     33	struct rtl8187_priv *priv = hw->priv;
     34
     35	priv->rfkill_off = rtl8187_is_radio_enabled(priv);
     36	printk(KERN_INFO "rtl8187: wireless switch is %s\n",
     37	       priv->rfkill_off ? "on" : "off");
     38	wiphy_rfkill_set_hw_state(hw->wiphy, !priv->rfkill_off);
     39	wiphy_rfkill_start_polling(hw->wiphy);
     40}
     41
     42void rtl8187_rfkill_poll(struct ieee80211_hw *hw)
     43{
     44	bool enabled;
     45	struct rtl8187_priv *priv = hw->priv;
     46
     47	mutex_lock(&priv->conf_mutex);
     48	enabled = rtl8187_is_radio_enabled(priv);
     49	if (unlikely(enabled != priv->rfkill_off)) {
     50		priv->rfkill_off = enabled;
     51		printk(KERN_INFO "rtl8187: wireless radio switch turned %s\n",
     52		       enabled ? "on" : "off");
     53		wiphy_rfkill_set_hw_state(hw->wiphy, !enabled);
     54	}
     55	mutex_unlock(&priv->conf_mutex);
     56}
     57
     58void rtl8187_rfkill_exit(struct ieee80211_hw *hw)
     59{
     60	wiphy_rfkill_stop_polling(hw->wiphy);
     61}