LXR linux/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 * 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 "reg.h"
  33#include "def.h"
  34#include "phy.h"
  35#include "dm.h"
  36
  37void rtl92cu_dm_dynamic_txpower(struct ieee80211_hw *hw)
  38{
  39        struct rtl_priv *rtlpriv = rtl_priv(hw);
  40        struct rtl_phy *rtlphy = &(rtlpriv->phy);
  41        struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  42        long undec_sm_pwdb;
  43
  44        if (!rtlpriv->dm.dynamic_txpower_enable)
  45                return;
  46
  47        if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
  48                rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  49                return;
  50        }
  51
  52        if ((mac->link_state < MAC80211_LINKED) &&
  53            (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
  54                RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
  55                         "Not connected to any\n");
  56
  57                rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  58
  59                rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
  60                return;
  61        }
  62
  63        if (mac->link_state >= MAC80211_LINKED) {
  64                if (mac->opmode == NL80211_IFTYPE_ADHOC) {
  65                        undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  66                        RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  67                                 "AP Client PWDB = 0x%lx\n",
  68                                 undec_sm_pwdb);
  69                } else {
  70                        undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
  71                        RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  72                                 "STA Default Port PWDB = 0x%lx\n",
  73                                 undec_sm_pwdb);
  74                }
  75        } else {
  76                undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  77
  78                RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  79                         "AP Ext Port PWDB = 0x%lx\n",
  80                         undec_sm_pwdb);
  81        }
  82
  83        if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
  84                rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  85                RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  86                         "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
  87        } else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
  88                   (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
  89
  90                rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  91                RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  92                         "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
  93        } else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
  94                rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  95                RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  96                         "TXHIGHPWRLEVEL_NORMAL\n");
  97        }
  98
  99        if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
 100                RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 101                         "PHY_SetTxPowerLevel8192S() Channel = %d\n",
 102                         rtlphy->current_channel);
 103                rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
 104                if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 105                    TXHIGHPWRLEVEL_NORMAL)
 106                        dm_restorepowerindex(hw);
 107                else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 108                         TXHIGHPWRLEVEL_LEVEL1)
 109                        dm_writepowerindex(hw, 0x14);
 110                else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
 111                         TXHIGHPWRLEVEL_LEVEL2)
 112                        dm_writepowerindex(hw, 0x10);
 113        }
 114
 115        rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
 116}
 117