dm.c

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/******************************************************************************
 *
 * Copyright(c) 2009-2012  Realtek Corporation.
 *
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of version 2 of the GNU General Public License as
 * published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
 *
 * The full GNU General Public License is included in this distribution in the
 * file called LICENSE.
 *
 * Contact Information:
 * wlanfae <[email protected]>
 * Realtek Corporation, No. 2, Innovation Road II, Hsinchu Science Park,
 * Hsinchu 300, Taiwan.
 *
 * Larry Finger <[email protected]>
 *
 *****************************************************************************/

#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 undecorated_smoothed_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_undecoratedsmoothed_pwdb == 0)) {
        RT_TRACE(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) {
            undecorated_smoothed_pwdb =
                rtlpriv->dm.entry_min_undecoratedsmoothed_pwdb;
            RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
                 "AP Client PWDB = 0x%lx\n",
                 undecorated_smoothed_pwdb);
        } else {
            undecorated_smoothed_pwdb =
                rtlpriv->dm.undecorated_smoothed_pwdb;
            RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
                 "STA Default Port PWDB = 0x%lx\n",
                 undecorated_smoothed_pwdb);
        }
    } else {
        undecorated_smoothed_pwdb =
            rtlpriv->dm.entry_min_undecoratedsmoothed_pwdb;

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

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

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

    if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
        RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
             "PHY_SetTxPowerLevel8192S() Channel = %d\n",
             rtlphy->current_channel);
        rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
    }

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