1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright(c) 2009-2012  Realtek Corporation.*/
3 
4 #include "../wifi.h"
5 #include "../base.h"
6 #include "reg.h"
7 #include "def.h"
8 #include "phy.h"
9 #include "dm.h"
10 
11 void rtl92cu_dm_dynamic_txpower(struct ieee80211_hw *hw)
12 {
13 	struct rtl_priv *rtlpriv = rtl_priv(hw);
14 	struct rtl_phy *rtlphy = &(rtlpriv->phy);
15 	struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
16 	long undec_sm_pwdb;
17 
18 	if (!rtlpriv->dm.dynamic_txpower_enable)
19 		return;
20 
21 	if (rtlpriv->dm.dm_flag & HAL_DM_HIPWR_DISABLE) {
22 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
23 		return;
24 	}
25 
26 	if ((mac->link_state < MAC80211_LINKED) &&
27 	    (rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
28 		rtl_dbg(rtlpriv, COMP_POWER, DBG_TRACE,
29 			"Not connected to any\n");
30 
31 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
32 
33 		rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
34 		return;
35 	}
36 
37 	if (mac->link_state >= MAC80211_LINKED) {
38 		if (mac->opmode == NL80211_IFTYPE_ADHOC) {
39 			undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
40 			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
41 				"AP Client PWDB = 0x%lx\n",
42 				undec_sm_pwdb);
43 		} else {
44 			undec_sm_pwdb = rtlpriv->dm.undec_sm_pwdb;
45 			rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
46 				"STA Default Port PWDB = 0x%lx\n",
47 				undec_sm_pwdb);
48 		}
49 	} else {
50 		undec_sm_pwdb = rtlpriv->dm.entry_min_undec_sm_pwdb;
51 
52 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
53 			"AP Ext Port PWDB = 0x%lx\n",
54 			undec_sm_pwdb);
55 	}
56 
57 	if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
58 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
59 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
60 			"TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
61 	} else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
62 		   (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL1)) {
63 
64 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
65 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
66 			"TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x10)\n");
67 	} else if (undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL1 - 5)) {
68 		rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
69 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
70 			"TXHIGHPWRLEVEL_NORMAL\n");
71 	}
72 
73 	if ((rtlpriv->dm.dynamic_txhighpower_lvl != rtlpriv->dm.last_dtp_lvl)) {
74 		rtl_dbg(rtlpriv, COMP_POWER, DBG_LOUD,
75 			"PHY_SetTxPowerLevel8192S() Channel = %d\n",
76 			 rtlphy->current_channel);
77 		rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
78 		if (rtlpriv->dm.dynamic_txhighpower_lvl ==
79 		    TXHIGHPWRLEVEL_NORMAL)
80 			dm_restorepowerindex(hw);
81 		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
82 			 TXHIGHPWRLEVEL_LEVEL1)
83 			dm_writepowerindex(hw, 0x14);
84 		else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
85 			 TXHIGHPWRLEVEL_LEVEL2)
86 			dm_writepowerindex(hw, 0x10);
87 	}
88 
89 	rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
90 }
91