drivers/net/wireless/realtek/rtlwifi/rtl8192ce/dm.c

   1 /******************************************************************************
   2  *
   3  * Copyright(c) 2009-2012  Realtek Corporation.
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * This program is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  12  * more details.
  13  *
  14  * The full GNU General Public License is included in this distribution in the
  15  * file called LICENSE.
  16  *
  17  * Contact Information:
  18  * wlanfae <wlanfae@realtek.com>
  19  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  20  * Hsinchu 300, Taiwan.
  21  *
  22  * Larry Finger <Larry.Finger@lwfinger.net>
  23  *
  24  *****************************************************************************/
  25
  26 #include "../wifi.h"
  27 #include "../base.h"
  28 #include "../pci.h"
  29 #include "../core.h"
  30 #include "reg.h"
  31 #include "def.h"
  32 #include "phy.h"
  33 #include "dm.h"
  34 #include "../rtl8192c/fw_common.h"
  35
  36 void rtl92ce_dm_dynamic_txpower(struct ieee80211_hw *hw)
  37 {
  38         struct rtl_priv *rtlpriv = rtl_priv(hw);
  39         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  40         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  41         long undec_sm_pwdb;
  42
  43         if (!rtlpriv->dm.dynamic_txpower_enable)
  44                 return;
  45
  46         if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
  47                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  48                 return;
  49         }
  50
  51         if ((mac->link_state < MAC80211_LINKED) &&
  52             (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
  53                 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
  54                          "Not connected to any\n");
  55
  56                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  57
  58                 rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
  59                 return;
  60         }
  61
  62         if (mac->link_state >= MAC80211_LINKED) {
  63                 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
  64                         undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  65                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  66                                  "AP Client PWDB = 0x%lx\n",
  67                                  undec_sm_pwdb);
  68                 } else {
  69                         undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
  70                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  71                                  "STA Default Port PWDB = 0x%lx\n",
  72                                  undec_sm_pwdb);
  73                 }
  74         } else {
  75                 undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  76
  77                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  78                          "AP Ext Port PWDB = 0x%lx\n",
  79                          undec_sm_pwdb);
  80         }
  81
  82         if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
  83                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  84                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  85                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
  86         } else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
  87                    (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
  88
  89                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  90                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  91                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
  92         } else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
  93                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  94                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  95                          "TXHIGHPWRLEVEL_NORMAL\n");
  96         }
  97
  98         if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
  99                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 100                          "PHY_SetTxPowerLevel8192S() Channel = %d\n",
 101                          rtlphy->current_channel);
 102                 rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
 103         }
 104
 105         rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
 106 }