drivers/net/wireless/realtek/rtlwifi/rtl8192cu/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 "reg.h"
  29 #include "def.h"
  30 #include "phy.h"
  31 #include "dm.h"
  32
  33 void rtl92cu_dm_dynamic_txpower(struct ieee80211_hw *hw)
  34 {
  35         struct rtl_priv *rtlpriv = rtl_priv(hw);
  36         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  37         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  38         long undec_sm_pwdb;
  39
  40         if (!rtlpriv->dm.dynamic_txpower_enable)
  41                 return;
  42
  43         if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
  44                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  45                 return;
  46         }
  47
  48         if ((mac->link_state < MAC80211_LINKED) &&
  49             (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
  50                 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
  51                          "Not connected to any\n");
  52
  53                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  54
  55                 rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
  56                 return;
  57         }
  58
  59         if (mac->link_state >= MAC80211_LINKED) {
  60                 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
  61                         undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  62                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  63                                  "AP Client PWDB = 0x%lx\n",
  64                                  undec_sm_pwdb);
  65                 } else {
  66                         undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
  67                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  68                                  "STA Default Port PWDB = 0x%lx\n",
  69                                  undec_sm_pwdb);
  70                 }
  71         } else {
  72                 undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  73
  74                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  75                          "AP Ext Port PWDB = 0x%lx\n",
  76                          undec_sm_pwdb);
  77         }
  78
  79         if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
  80                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  81                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  82                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
  83         } else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
  84                    (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
  85
  86                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  87                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  88                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
  89         } else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
  90                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  91                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  92                          "TXHIGHPWRLEVEL_NORMAL\n");
  93         }
  94
  95         if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
  96                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  97                          "PHY_SetTxPowerLevel8192S() Channel = %d\n",
  98                          rtlphy->current_channel);
  99                 rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
 100                 if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 101                     TXHIGHPWRLEVEL_NORMAL)
 102                         dm_restorepowerindex(hw);
 103                 else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 104                          TXHIGHPWRLEVEL_LEVEL1)
 105                         dm_writepowerindex(hw, 0x14);
 106                 else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 107                          TXHIGHPWRLEVEL_LEVEL2)
 108                         dm_writepowerindex(hw, 0x10);
 109         }
 110
 111         rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
 112 }