1/******************************************************************************
2 *
3 * Copyright(c) 2009-2012  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 undec_sm_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_undec_sm_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			undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
66			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
67				 "AP Client PWDB = 0x%lx\n",
68				 undec_sm_pwdb);
69		} else {
70			undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
71			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
72				 "STA Default Port PWDB = 0x%lx\n",
73				 undec_sm_pwdb);
74		}
75	} else {
76		undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
77
78		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
79			 "AP Ext Port PWDB = 0x%lx\n",
80			 undec_sm_pwdb);
81	}
82
83	if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
84		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
85		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
86			 "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
87	} else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
88		   (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
89
90		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
91		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
92			 "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
93	} else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
94		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
95		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
96			 "TXHIGHPWRLEVEL_NORMAL\n");
97	}
98
99	if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
100		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
101			 "PHY_SetTxPowerLevel8192S() Channel = %d\n",
102			 rtlphy->current_channel);
103		rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
104		if (rtlpriv->dm.dynamic_txhighpower_lvl ==
105		    TXHIGHPWRLEVEL_NORMAL)
106			dm_restorepowerindex(hw);
107		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
108			 TXHIGHPWRLEVEL_LEVEL1)
109			dm_writepowerindex(hw, 0x14);
110		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
111			 TXHIGHPWRLEVEL_LEVEL2)
112			dm_writepowerindex(hw, 0x10);
113	}
114
115	rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
116}
117