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  * You should have received a copy of the GNU General Public License along with
  15  * this program; if not, write to the Free Software Foundation, Inc.,
  16  * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
  17  *
  18  * The full GNU General Public License is included in this distribution in the
  19  * file called LICENSE.
  20  *
  21  * Contact Information:
  22  * wlanfae <wlanfae@realtek.com>
  23  * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
  24  * Hsinchu 300, Taiwan.
  25  *
  26  * Larry Finger <Larry.Finger@lwfinger.net>
  27  *
  28  *****************************************************************************/
  29
  30 #include "../wifi.h"
  31 #include "../base.h"
  32 #include "../pci.h"
  33 #include "../core.h"
  34 #include "reg.h"
  35 #include "def.h"
  36 #include "phy.h"
  37 #include "dm.h"
  38 #include "../rtl8192c/fw_common.h"
  39
  40 void rtl92ce_dm_dynamic_txpower(struct ieee80211_hw *hw)
  41 {
  42         struct rtl_priv *rtlpriv = rtl_priv(hw);
  43         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  44         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  45         long undec_sm_pwdb;
  46
  47         if (!rtlpriv->dm.dynamic_txpower_enable)
  48                 return;
  49
  50         if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
  51                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  52                 return;
  53         }
  54
  55         if ((mac->link_state < MAC80211_LINKED) &&
  56             (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
  57                 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
  58                          "Not connected to any\n");
  59
  60                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  61
  62                 rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
  63                 return;
  64         }
  65
  66         if (mac->link_state >= MAC80211_LINKED) {
  67                 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
  68                         undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  69                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  70                                  "AP Client PWDB = 0x%lx\n",
  71                                  undec_sm_pwdb);
  72                 } else {
  73                         undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
  74                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  75                                  "STA Default Port PWDB = 0x%lx\n",
  76                                  undec_sm_pwdb);
  77                 }
  78         } else {
  79                 undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  80
  81                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  82                          "AP Ext Port PWDB = 0x%lx\n",
  83                          undec_sm_pwdb);
  84         }
  85
  86         if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
  87                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  88                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  89                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
  90         } else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
  91                    (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
  92
  93                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  94                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  95                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
  96         } else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
  97                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  98                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  99                          "TXHIGHPWRLEVEL_NORMAL\n");
 100         }
 101
 102         if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
 103                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 104                          "PHY_SetTxPowerLevel8192S() Channel = %d\n",
 105                          rtlphy->current_channel);
 106                 rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
 107         }
 108
 109         rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
 110 }