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

// SPDX-License-Identifier: GPL-2.0
/* Copyright(c) 2009-2012  Realtek Corporation.*/

#include "../wifi.h"
#include "../base.h"
#include "reg.h"
#include "def.h"
#include "phy.h"
#include "dm.h"

void rtl92cu_dm_dynamic_txpower(struct ieee80211_hw *hw)
{
	struct rtl_priv *rtlpriv = rtl_priv(hw);
	struct rtl_phy *rtlphy = &(rtlpriv->phy);
	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
	long undec_sm_pwdb;

	if (!rtlpriv->dm.dynamic_txpower_enable)
		return;

	if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
		return;
	}

	if ((mac->link_state < MAC80211_LINKED) &&
	    (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
		rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE,
			"Not connected to any\n");

		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;

		rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
		return;
	}

	if (mac->link_state >= MAC80211_LINKED) {
		if (mac->opmode == NL80211_IFTYPE_ADHOC) {
			undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
				"AP Client PWDB = 0x%lx\n",
				undec_sm_pwdb);
		} else {
			undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
				"STA Default Port PWDB = 0x%lx\n",
				undec_sm_pwdb);
		}
	} else {
		undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;

		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
			"AP Ext Port PWDB = 0x%lx\n",
			undec_sm_pwdb);
	}

	if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
			"TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
	} else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
		   (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {

		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
			"TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
	} else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
			"TXHIGHPWRLEVEL_NORMAL\n");
	}

	if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
			"PHY_SetTxPowerLevel8192S() Channel = %d\n",
			 rtlphy->current_channel);
		rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
		if (rtlpriv->dm.dynamic_txhighpower_lvl ==
		    TXHIGHPWRLEVEL_NORMAL)
			dm_restorepowerindex(hw);
		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
			 TXHIGHPWRLEVEL_LEVEL1)
			dm_writepowerindex(hw, 0x14);
		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
			 TXHIGHPWRLEVEL_LEVEL2)
			dm_writepowerindex(hw, 0x10);
	}

	rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
}