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 * 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
  33void 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}
 113