1/******************************************************************************
  2 *
  3 * Copyright(c) 2009-2010  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 undecorated_smoothed_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_undecoratedsmoothed_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			undecorated_smoothed_pwdb =
 66			    rtlpriv->dm.entry_min_undecoratedsmoothed_pwdb;
 67			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 68				 ("AP Client PWDB = 0x%lx\n",
 69				  undecorated_smoothed_pwdb));
 70		} else {
 71			undecorated_smoothed_pwdb =
 72			    rtlpriv->dm.undecorated_smoothed_pwdb;
 73			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 74				 ("STA Default Port PWDB = 0x%lx\n",
 75				  undecorated_smoothed_pwdb));
 76		}
 77	} else {
 78		undecorated_smoothed_pwdb =
 79		    rtlpriv->dm.entry_min_undecoratedsmoothed_pwdb;
 80
 81		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 82			 ("AP Ext Port PWDB = 0x%lx\n",
 83			  undecorated_smoothed_pwdb));
 84	}
 85
 86	if (undecorated_smoothed_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
 87		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
 88		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 89			 ("TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n"));
 90	} else if ((undecorated_smoothed_pwdb <
 91		    (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
 92		   (undecorated_smoothed_pwdb >=
 93		    TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
 94
 95		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
 96		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
 97			 ("TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n"));
 98	} else if (undecorated_smoothed_pwdb <
 99		   (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
100		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
101		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
102			 ("TXHIGHPWRLEVEL_NORMAL\n"));
103	}
104
105	if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
106		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
107			 ("PHY_SetTxPowerLevel8192S() Channel = %d\n",
108			  rtlphy->current_channel));
109		rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
110	}
111
112	rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
113}