drivers/net/wireless/realtek/rtlwifi/rtl8192cu/dm.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /* Copyright(c) 2009-2012  Realtek Corporation.*/
   3
   4 #include "../wifi.h"
   5 #include "../base.h"
   6 #include "reg.h"
   7 #include "def.h"
   8 #include "phy.h"
   9 #include "dm.h"
  10
  11 void rtl92cu_dm_dynamic_txpower(struct ieee80211_hw *hw)
  12 {
  13         struct rtl_priv *rtlpriv = rtl_priv(hw);
  14         struct rtl_phy *rtlphy = &(rtlpriv->phy);
  15         struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
  16         long undec_sm_pwdb;
  17
  18         if (!rtlpriv->dm.dynamic_txpower_enable)
  19                 return;
  20
  21         if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
  22                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  23                 return;
  24         }
  25
  26         if ((mac->link_state < MAC80211_LINKED) &&
  27             (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
  28                 RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
  29                          "Not connected to any\n");
  30
  31                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  32
  33                 rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
  34                 return;
  35         }
  36
  37         if (mac->link_state >= MAC80211_LINKED) {
  38                 if (mac->opmode == NL80211_IFTYPE_ADHOC) {
  39                         undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  40                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  41                                  "AP Client PWDB = 0x%lx\n",
  42                                  undec_sm_pwdb);
  43                 } else {
  44                         undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
  45                         RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  46                                  "STA Default Port PWDB = 0x%lx\n",
  47                                  undec_sm_pwdb);
  48                 }
  49         } else {
  50                 undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
  51
  52                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  53                          "AP Ext Port PWDB = 0x%lx\n",
  54                          undec_sm_pwdb);
  55         }
  56
  57         if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
  58                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  59                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  60                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
  61         } else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
  62                    (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
  63
  64                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
  65                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  66                          "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
  67         } else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
  68                 rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
  69                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  70                          "TXHIGHPWRLEVEL_NORMAL\n");
  71         }
  72
  73         if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
  74                 RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
  75                          "PHY_SetTxPowerLevel8192S() Channel = %d\n",
  76                          rtlphy->current_channel);
  77                 rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
  78                 if (rtlpriv->dm.dynamic_txhighpower_lvl ==
  79                     TXHIGHPWRLEVEL_NORMAL)
  80                         dm_restorepowerindex(hw);
  81                 else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
  82                          TXHIGHPWRLEVEL_LEVEL1)
  83                         dm_writepowerindex(hw, 0x14);
  84                 else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
  85                          TXHIGHPWRLEVEL_LEVEL2)
  86                         dm_writepowerindex(hw, 0x10);
  87         }
  88
  89         rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
  90 }