linux/drivers/net/wireless/realtek/rtlwifi/rtl8192cu/dm.c
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   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
  11void 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}
  91