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
rtl92cu_dm_dynamic_txpower(struct ieee80211_hw * hw)37 void 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