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 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}
114