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 "../pci.h"
33 #include "../core.h"
34 #include "reg.h"
35 #include "def.h"
36 #include "phy.h"
37 #include "dm.h"
38 #include "../rtl8192c/fw_common.h"
39 
40 void rtl92ce_dm_dynamic_txpower(struct ieee80211_hw *hw)
41 {
42 	struct rtl_priv *rtlpriv = rtl_priv(hw);
43 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
44 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
45 	long undec_sm_pwdb;
46 
47 	if (!rtlpriv->dm.dynamic_txpower_enable)
48 		return;
49 
50 	if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
51 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
52 		return;
53 	}
54 
55 	if ((mac->link_state < MAC80211_LINKED) &&
56 	    (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
57 		RT_TRACE(rtlpriv, COMP_POWER, DBG_TRACE,
58 			 "Not connected to any\n");
59 
60 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
61 
62 		rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
63 		return;
64 	}
65 
66 	if (mac->link_state >= MAC80211_LINKED) {
67 		if (mac->opmode == NL80211_IFTYPE_ADHOC) {
68 			undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
69 			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
70 				 "AP Client PWDB = 0x%lx\n",
71 				 undec_sm_pwdb);
72 		} else {
73 			undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
74 			RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
75 				 "STA Default Port PWDB = 0x%lx\n",
76 				 undec_sm_pwdb);
77 		}
78 	} else {
79 		undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
80 
81 		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
82 			 "AP Ext Port PWDB = 0x%lx\n",
83 			 undec_sm_pwdb);
84 	}
85 
86 	if (undec_sm_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 ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
91 		   (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
92 
93 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
94 		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
95 			 "TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
96 	} else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
97 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
98 		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
99 			 "TXHIGHPWRLEVEL_NORMAL\n");
100 	}
101 
102 	if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
103 		RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
104 			 "PHY_SetTxPowerLevel8192S() Channel = %d\n",
105 			 rtlphy->current_channel);
106 		rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
107 	}
108 
109 	rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
110 }
111