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Commit 796e4534 authored by Larry Finger's avatar Larry Finger Committed by John W. Linville
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rtlwifi: rtl8192c: Update dynamic gain calculations 

The vendor driver contained a number of improvements in the gain settings
for the rtl8192c{e,u} devices. This patch implements them in the kernel
driver.
Signed-off-by: default avatarLarry Finger <Larry.Finger@lwfinger.net>
Cc: Stable <stable@vger.kernel.org>
Signed-off-by: default avatarJohn W. Linville <linville@tuxdriver.com>
parent d82403a9
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Showing with 193 additions and 98 deletions
drivers/net/wireless/rtlwifi/rtl8192c/dm_common.c
View file @ 796e4534
......@@ -216,7 +216,12 @@ static void rtl92c_dm_diginit(struct ieee80211_hw *hw)
dm_digtable->back_range_max = DM_DIG_BACKOFF_MAX;
dm_digtable->back_range_min = DM_DIG_BACKOFF_MIN;
dm_digtable->pre_cck_pd_state = CCK_PD_STAGE_MAX;
dm_digtable->cur_cck_pd_state = CCK_PD_STAGE_MAX;
dm_digtable->cur_cck_pd_state = CCK_PD_STAGE_LowRssi;
dm_digtable->forbidden_igi = DM_DIG_MIN;
dm_digtable->large_fa_hit = 0;
dm_digtable->recover_cnt = 0;
dm_digtable->dig_dynamic_min = 0x25;
}
static u8 rtl92c_dm_initial_gain_min_pwdb(struct ieee80211_hw *hw)
......@@ -242,7 +247,9 @@ static u8 rtl92c_dm_initial_gain_min_pwdb(struct ieee80211_hw *hw)
rssi_val_min = rtlpriv->dm.entry_min_undec_sm_pwdb;
}
return (u8) rssi_val_min;
if (rssi_val_min > 100)
rssi_val_min = 100;
return (u8)rssi_val_min;
}
static void rtl92c_dm_false_alarm_counter_statistics(struct ieee80211_hw *hw)
......@@ -260,9 +267,17 @@ static void rtl92c_dm_false_alarm_counter_statistics(struct ieee80211_hw *hw)
ret_value = rtl_get_bbreg(hw, ROFDM_PHYCOUNTER3, MASKDWORD);
falsealm_cnt->cnt_mcs_fail = (ret_value & 0xffff);
ret_value = rtl_get_bbreg(hw, ROFDM0_FRAMESYNC, MASKDWORD);
falsealm_cnt->cnt_fast_fsync_fail = (ret_value & 0xffff);
falsealm_cnt->cnt_sb_search_fail = ((ret_value & 0xffff0000) >> 16);
falsealm_cnt->cnt_ofdm_fail = falsealm_cnt->cnt_parity_fail +
falsealm_cnt->cnt_rate_illegal +
falsealm_cnt->cnt_crc8_fail + falsealm_cnt->cnt_mcs_fail;
falsealm_cnt->cnt_crc8_fail +
falsealm_cnt->cnt_mcs_fail +
falsealm_cnt->cnt_fast_fsync_fail +
falsealm_cnt->cnt_sb_search_fail;
rtl_set_bbreg(hw, RCCK0_FALSEALARMREPORT, BIT(14), 1);
ret_value = rtl_get_bbreg(hw, RCCK0_FACOUNTERLOWER, MASKBYTE0);
......@@ -307,12 +322,14 @@ static void rtl92c_dm_ctrl_initgain_by_fa(struct ieee80211_hw *hw)
value_igi++;
else if (rtlpriv->falsealm_cnt.cnt_all >= DM_DIG_FA_TH2)
value_igi += 2;
if (value_igi > DM_DIG_FA_UPPER)
value_igi = DM_DIG_FA_UPPER;
else if (value_igi < DM_DIG_FA_LOWER)
value_igi = DM_DIG_FA_LOWER;
if (rtlpriv->falsealm_cnt.cnt_all > 10000)
value_igi = 0x32;
value_igi = DM_DIG_FA_UPPER;
dm_digtable->cur_igvalue = value_igi;
rtl92c_dm_write_dig(hw);
......@@ -322,32 +339,80 @@ static void rtl92c_dm_ctrl_initgain_by_rssi(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct dig_t *digtable = &rtlpriv->dm_digtable;
u32 isbt;
if (rtlpriv->falsealm_cnt.cnt_all > digtable->fa_highthresh) {
if ((digtable->back_val - 2) < digtable->back_range_min)
/* modify DIG lower bound, deal with abnorally large false alarm */
if (rtlpriv->falsealm_cnt.cnt_all > 10000) {
digtable->large_fa_hit++;
if (digtable->forbidden_igi < digtable->cur_igvalue) {
digtable->forbidden_igi = digtable->cur_igvalue;
digtable->large_fa_hit = 1;
}
if (digtable->large_fa_hit >= 3) {
if ((digtable->forbidden_igi + 1) >
digtable->rx_gain_max)
digtable->rx_gain_min = digtable->rx_gain_max;
else
digtable->rx_gain_min = (digtable->forbidden_igi + 1);
digtable->recover_cnt = 3600; /* 3600=2hr */
}
} else {
/* Recovery mechanism for IGI lower bound */
if (digtable->recover_cnt != 0) {
digtable->recover_cnt--;
} else {
if (digtable->large_fa_hit == 0) {
if ((digtable->forbidden_igi-1) < DM_DIG_MIN) {
digtable->forbidden_igi = DM_DIG_MIN;
digtable->rx_gain_min = DM_DIG_MIN;
} else {
digtable->forbidden_igi--;
digtable->rx_gain_min = digtable->forbidden_igi + 1;
}
} else if (digtable->large_fa_hit == 3) {
digtable->large_fa_hit = 0;
}
}
}
if (rtlpriv->falsealm_cnt.cnt_all < 250) {
isbt = rtl_read_byte(rtlpriv, 0x4fd) & 0x01;
if (!isbt) {
if (rtlpriv->falsealm_cnt.cnt_all >
digtable->fa_lowthresh) {
if ((digtable->back_val - 2) <
digtable->back_range_min)
digtable->back_val = digtable->back_range_min;
else
digtable->back_val -= 2;
} else if (rtlpriv->falsealm_cnt.cnt_all < digtable->fa_lowthresh) {
if ((digtable->back_val + 2) > digtable->back_range_max)
} else if (rtlpriv->falsealm_cnt.cnt_all <
digtable->fa_lowthresh) {
if ((digtable->back_val + 2) >
digtable->back_range_max)
digtable->back_val = digtable->back_range_max;
else
digtable->back_val += 2;
}
} else {
digtable->back_val = DM_DIG_BACKOFF_DEFAULT;
}
} else {
/* Adjust initial gain by false alarm */
if (rtlpriv->falsealm_cnt.cnt_all > 1000)
digtable->cur_igvalue = digtable->pre_igvalue + 2;
else if (rtlpriv->falsealm_cnt.cnt_all > 750)
digtable->cur_igvalue = digtable->pre_igvalue + 1;
else if (rtlpriv->falsealm_cnt.cnt_all < 500)
digtable->cur_igvalue = digtable->pre_igvalue - 1;
}
if ((digtable->rssi_val_min + 10 - digtable->back_val) >
digtable->rx_gain_max)
/* Check initial gain by upper/lower bound */
if (digtable->cur_igvalue > digtable->rx_gain_max)
digtable->cur_igvalue = digtable->rx_gain_max;
else if ((digtable->rssi_val_min + 10 -
digtable->back_val) < digtable->rx_gain_min)
digtable->cur_igvalue = digtable->rx_gain_min;
else
digtable->cur_igvalue = digtable->rssi_val_min + 10 -
digtable->back_val;
RT_TRACE(rtlpriv, COMP_DIG, DBG_TRACE,
"rssi_val_min = %x back_val %x\n",
digtable->rssi_val_min, digtable->back_val);
if (digtable->cur_igvalue < digtable->rx_gain_min)
digtable->cur_igvalue = digtable->rx_gain_min;
rtl92c_dm_write_dig(hw);
}
......@@ -365,7 +430,7 @@ static void rtl92c_dm_initial_gain_multi_sta(struct ieee80211_hw *hw)
multi_sta = true;
if (!multi_sta ||
dm_digtable->cursta_cstate != DIG_STA_DISCONNECT) {
dm_digtable->cursta_cstate == DIG_STA_DISCONNECT) {
initialized = false;
dm_digtable->dig_ext_port_stage = DIG_EXT_PORT_STAGE_MAX;
return;
......@@ -411,7 +476,6 @@ static void rtl92c_dm_initial_gain_sta(struct ieee80211_hw *hw)
RT_TRACE(rtlpriv, COMP_DIG, DBG_TRACE,
"presta_cstate = %x, cursta_cstate = %x\n",
dm_digtable->presta_cstate, dm_digtable->cursta_cstate);
if (dm_digtable->presta_cstate == dm_digtable->cursta_cstate ||
dm_digtable->cursta_cstate == DIG_STA_BEFORE_CONNECT ||
dm_digtable->cursta_cstate == DIG_STA_CONNECT) {
......@@ -419,6 +483,8 @@ static void rtl92c_dm_initial_gain_sta(struct ieee80211_hw *hw)
if (dm_digtable->cursta_cstate != DIG_STA_DISCONNECT) {
dm_digtable->rssi_val_min =
rtl92c_dm_initial_gain_min_pwdb(hw);
if (dm_digtable->rssi_val_min > 100)
dm_digtable->rssi_val_min = 100;
rtl92c_dm_ctrl_initgain_by_rssi(hw);
}
} else {
......@@ -434,11 +500,12 @@ static void rtl92c_dm_initial_gain_sta(struct ieee80211_hw *hw)
static void rtl92c_dm_cck_packet_detection_thresh(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
struct dig_t *dm_digtable = &rtlpriv->dm_digtable;
if (dm_digtable->cursta_cstate == DIG_STA_CONNECT) {
dm_digtable->rssi_val_min = rtl92c_dm_initial_gain_min_pwdb(hw);
if (dm_digtable->rssi_val_min > 100)
dm_digtable->rssi_val_min = 100;
if (dm_digtable->pre_cck_pd_state == CCK_PD_STAGE_LowRssi) {
if (dm_digtable->rssi_val_min <= 25)
......@@ -460,48 +527,14 @@ static void rtl92c_dm_cck_packet_detection_thresh(struct ieee80211_hw *hw)
}
if (dm_digtable->pre_cck_pd_state != dm_digtable->cur_cck_pd_state) {
if (dm_digtable->cur_cck_pd_state == CCK_PD_STAGE_LowRssi) {
if (rtlpriv->falsealm_cnt.cnt_cck_fail > 800)
dm_digtable->cur_cck_fa_state =
CCK_FA_STAGE_High;
if ((dm_digtable->cur_cck_pd_state == CCK_PD_STAGE_LowRssi) ||
(dm_digtable->cur_cck_pd_state == CCK_PD_STAGE_MAX))
rtl_set_bbreg(hw, RCCK0_CCA, MASKBYTE2, 0x83);
else
dm_digtable->cur_cck_fa_state = CCK_FA_STAGE_Low;
if (dm_digtable->pre_cck_fa_state !=
dm_digtable->cur_cck_fa_state) {
if (dm_digtable->cur_cck_fa_state ==
CCK_FA_STAGE_Low)
rtl_set_bbreg(hw, RCCK0_CCA, MASKBYTE2,
0x83);
else
rtl_set_bbreg(hw, RCCK0_CCA, MASKBYTE2,
0xcd);
dm_digtable->pre_cck_fa_state =
dm_digtable->cur_cck_fa_state;
}
rtl_set_bbreg(hw, RCCK0_SYSTEM, MASKBYTE1, 0x40);
if (IS_92C_SERIAL(rtlhal->version))
rtl_set_bbreg(hw, RCCK0_FALSEALARMREPORT,
MASKBYTE2, 0xd7);
} else {
rtl_set_bbreg(hw, RCCK0_CCA, MASKBYTE2, 0xcd);
rtl_set_bbreg(hw, RCCK0_SYSTEM, MASKBYTE1, 0x47);
if (IS_92C_SERIAL(rtlhal->version))
rtl_set_bbreg(hw, RCCK0_FALSEALARMREPORT,
MASKBYTE2, 0xd3);
}
dm_digtable->pre_cck_pd_state = dm_digtable->cur_cck_pd_state;
}
RT_TRACE(rtlpriv, COMP_DIG, DBG_TRACE, "CCKPDStage=%x\n",
dm_digtable->cur_cck_pd_state);
RT_TRACE(rtlpriv, COMP_DIG, DBG_TRACE, "is92C=%x\n",
IS_92C_SERIAL(rtlhal->version));
}
static void rtl92c_dm_ctrl_initgain_by_twoport(struct ieee80211_hw *hw)
......@@ -518,6 +551,8 @@ static void rtl92c_dm_ctrl_initgain_by_twoport(struct ieee80211_hw *hw)
else
dm_digtable->cursta_cstate = DIG_STA_DISCONNECT;
dm_digtable->curmultista_cstate = DIG_MULTISTA_DISCONNECT;
rtl92c_dm_initial_gain_sta(hw);
rtl92c_dm_initial_gain_multi_sta(hw);
rtl92c_dm_cck_packet_detection_thresh(hw);
......@@ -529,23 +564,26 @@ static void rtl92c_dm_ctrl_initgain_by_twoport(struct ieee80211_hw *hw)
static void rtl92c_dm_dig(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct dig_t *dm_digtable = &rtlpriv->dm_digtable;
if (rtlpriv->dm.dm_initialgain_enable == false)
return;
if (dm_digtable->dig_enable_flag == false)
if (!rtlpriv->dm.dm_flag & DYNAMIC_FUNC_DIG)
return;
rtl92c_dm_ctrl_initgain_by_twoport(hw);
}
static void rtl92c_dm_init_dynamic_txpower(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
if (rtlpriv->rtlhal.interface == INTF_USB &&
rtlpriv->rtlhal.board_type & 0x1) {
dm_savepowerindex(hw);
rtlpriv->dm.dynamic_txpower_enable = true;
} else {
rtlpriv->dm.dynamic_txpower_enable = false;
}
rtlpriv->dm.last_dtp_lvl = TXHIGHPWRLEVEL_NORMAL;
rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_NORMAL;
}
......@@ -560,9 +598,14 @@ void rtl92c_dm_write_dig(struct ieee80211_hw *hw)
dm_digtable->cur_igvalue, dm_digtable->pre_igvalue,
dm_digtable->back_val);
dm_digtable->cur_igvalue += 2;
if (dm_digtable->cur_igvalue > 0x3f)
dm_digtable->cur_igvalue = 0x3f;
if (rtlpriv->rtlhal.interface == INTF_USB &&
!dm_digtable->dig_enable_flag) {
dm_digtable->pre_igvalue = 0x17;
return;
}
dm_digtable->cur_igvalue -= 1;
if (dm_digtable->cur_igvalue < DM_DIG_MIN)
dm_digtable->cur_igvalue = DM_DIG_MIN;
if (dm_digtable->pre_igvalue != dm_digtable->cur_igvalue) {
rtl_set_bbreg(hw, ROFDM0_XAAGCCORE1, 0x7f,
......@@ -572,11 +615,47 @@ void rtl92c_dm_write_dig(struct ieee80211_hw *hw)
dm_digtable->pre_igvalue = dm_digtable->cur_igvalue;
}
RT_TRACE(rtlpriv, COMP_DIG, DBG_WARNING,
"dig values 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x 0x%x\n",
dm_digtable->cur_igvalue, dm_digtable->pre_igvalue,
dm_digtable->rssi_val_min, dm_digtable->back_val,
dm_digtable->rx_gain_max, dm_digtable->rx_gain_min,
dm_digtable->large_fa_hit, dm_digtable->forbidden_igi);
}
EXPORT_SYMBOL(rtl92c_dm_write_dig);
static void rtl92c_dm_pwdb_monitor(struct ieee80211_hw *hw)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
long tmpentry_max_pwdb = 0, tmpentry_min_pwdb = 0xff;
if (mac->link_state != MAC80211_LINKED)
return;
if (mac->opmode == NL80211_IFTYPE_ADHOC ||
mac->opmode == NL80211_IFTYPE_AP) {
/* TODO: Handle ADHOC and AP Mode */
}
if (tmpentry_max_pwdb != 0)
rtlpriv->dm.entry_max_undec_sm_pwdb = tmpentry_max_pwdb;
else
rtlpriv->dm.entry_max_undec_sm_pwdb = 0;
if (tmpentry_min_pwdb != 0xff)
rtlpriv->dm.entry_min_undec_sm_pwdb = tmpentry_min_pwdb;
else
rtlpriv->dm.entry_min_undec_sm_pwdb = 0;
/* TODO:
* if (mac->opmode == NL80211_IFTYPE_STATION) {
* if (rtlpriv->rtlhal.fw_ready) {
* u32 param = (u32)(rtlpriv->dm.undec_sm_pwdb << 16);
* rtl8192c_set_rssi_cmd(hw, param);
* }
* }
*/
}
void rtl92c_dm_init_edca_turbo(struct ieee80211_hw *hw)
......@@ -786,6 +865,7 @@ static void rtl92c_dm_txpower_tracking_callback_thermalmeter(struct ieee80211_hw
rtlpriv->dm.ofdm_index[i] = ofdm_index_old[i];
rtlpriv->dm.cck_index = cck_index_old;
}
/* Handle USB High PA boards */
delta = (thermalvalue > rtlpriv->dm.thermalvalue) ?
(thermalvalue - rtlpriv->dm.thermalvalue) :
......@@ -1176,22 +1256,22 @@ void rtl92c_dm_rf_saving(struct ieee80211_hw *hw, u8 bforce_in_normal)
{
struct rtl_priv *rtlpriv = rtl_priv(hw);
struct ps_t *dm_pstable = &rtlpriv->dm_pstable;
static u8 initialize;
static u32 reg_874, reg_c70, reg_85c, reg_a74;
if (initialize == 0) {
reg_874 = (rtl_get_bbreg(hw, RFPGA0_XCD_RFINTERFACESW,
if (!rtlpriv->reg_init) {
rtlpriv->reg_874 = (rtl_get_bbreg(hw,
RFPGA0_XCD_RFINTERFACESW,
MASKDWORD) & 0x1CC000) >> 14;
reg_c70 = (rtl_get_bbreg(hw, ROFDM0_AGCPARAMETER1,
rtlpriv->reg_c70 = (rtl_get_bbreg(hw, ROFDM0_AGCPARAMETER1,
MASKDWORD) & BIT(3)) >> 3;
reg_85c = (rtl_get_bbreg(hw, RFPGA0_XCD_SWITCHCONTROL,
rtlpriv->reg_85c = (rtl_get_bbreg(hw, RFPGA0_XCD_SWITCHCONTROL,
MASKDWORD) & 0xFF000000) >> 24;
reg_a74 = (rtl_get_bbreg(hw, 0xa74, MASKDWORD) & 0xF000) >> 12;
rtlpriv->reg_a74 = (rtl_get_bbreg(hw, 0xa74, MASKDWORD) &
0xF000) >> 12;
initialize = 1;
rtlpriv->reg_init = true;
}
if (!bforce_in_normal) {
......@@ -1228,12 +1308,12 @@ void rtl92c_dm_rf_saving(struct ieee80211_hw *hw, u8 bforce_in_normal)
rtl_set_bbreg(hw, 0x818, BIT(28), 0x1);
} else {
rtl_set_bbreg(hw, RFPGA0_XCD_RFINTERFACESW,
0x1CC000, reg_874);
0x1CC000, rtlpriv->reg_874);
rtl_set_bbreg(hw, ROFDM0_AGCPARAMETER1, BIT(3),
reg_c70);
rtlpriv->reg_c70);
rtl_set_bbreg(hw, RFPGA0_XCD_SWITCHCONTROL, 0xFF000000,
reg_85c);
rtl_set_bbreg(hw, 0xa74, 0xF000, reg_a74);
rtlpriv->reg_85c);
rtl_set_bbreg(hw, 0xa74, 0xF000, rtlpriv->reg_a74);
rtl_set_bbreg(hw, 0x818, BIT(28), 0x0);
}
......@@ -1249,6 +1329,7 @@ static void rtl92c_dm_dynamic_bb_powersaving(struct ieee80211_hw *hw)
struct rtl_mac *mac = rtl_mac(rtl_priv(hw));
struct rtl_hal *rtlhal = rtl_hal(rtl_priv(hw));
/* Determine the minimum RSSI */
if (((mac->link_state == MAC80211_NOLINK)) &&
(rtlpriv->dm.entry_min_undec_sm_pwdb == 0)) {
dm_pstable->rssi_val_min = 0;
......@@ -1277,6 +1358,7 @@ static void rtl92c_dm_dynamic_bb_powersaving(struct ieee80211_hw *hw)
dm_pstable->rssi_val_min);
}
/* Power Saving for 92C */
if (IS_92C_SERIAL(rtlhal->version))
;/* rtl92c_dm_1r_cca(hw); */
else
......@@ -1288,12 +1370,23 @@ void rtl92c_dm_init(struct ieee80211_hw *hw)
struct rtl_priv *rtlpriv = rtl_priv(hw);
rtlpriv->dm.dm_type = DM_TYPE_BYDRIVER;
rtlpriv->dm.dm_flag = DYNAMIC_FUNC_DISABLE | DYNAMIC_FUNC_DIG;
rtlpriv->dm.undec_sm_pwdb = -1;
rtlpriv->dm.undec_sm_cck = -1;
rtlpriv->dm.dm_initialgain_enable = true;
rtl92c_dm_diginit(hw);
rtlpriv->dm.dm_flag |= HAL_DM_HIPWR_DISABLE;
rtl92c_dm_init_dynamic_txpower(hw);
rtl92c_dm_init_edca_turbo(hw);
rtl92c_dm_init_rate_adaptive_mask(hw);
rtlpriv->dm.dm_flag |= DYNAMIC_FUNC_SS;
rtl92c_dm_initialize_txpower_tracking(hw);
rtl92c_dm_init_dynamic_bb_powersaving(hw);
rtlpriv->dm.ofdm_pkt_cnt = 0;
rtlpriv->dm.dm_rssi_sel = RSSI_DEFAULT;
}
EXPORT_SYMBOL(rtl92c_dm_init);
......@@ -1344,7 +1437,7 @@ void rtl92c_dm_dynamic_txpower(struct ieee80211_hw *hw)
}
if (undec_sm_pwdb >= TX_POWER_NEAR_FIELD_THRESH_LVL2) {
rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL1;
rtlpriv->dm.dynamic_txhighpower_lvl = TXHIGHPWRLEVEL_LEVEL2;
RT_TRACE(rtlpriv, COMP_POWER, DBG_LOUD,
"TXHIGHPWRLEVEL_LEVEL1 (TxPwr=0x0)\n");
} else if ((undec_sm_pwdb < (TX_POWER_NEAR_FIELD_THRESH_LVL2 - 3)) &&
......@@ -1364,8 +1457,16 @@ void rtl92c_dm_dynamic_txpower(struct ieee80211_hw *hw)
"PHY_SetTxPowerLevel8192S() Channel = %d\n",
rtlphy->current_channel);
rtl92c_phy_set_txpower_level(hw, rtlphy->current_channel);
if (rtlpriv->dm.dynamic_txhighpower_lvl ==
TXHIGHPWRLEVEL_NORMAL)
dm_restorepowerindex(hw);
else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
TXHIGHPWRLEVEL_LEVEL1)
dm_writepowerindex(hw, 0x14);
else if (rtlpriv->dm.dynamic_txhighpower_lvl ==
TXHIGHPWRLEVEL_LEVEL2)
dm_writepowerindex(hw, 0x10);
}
rtlpriv->dm.last_dtp_lvl = rtlpriv->dm.dynamic_txhighpower_lvl;
}
......@@ -1436,12 +1537,6 @@ u8 rtl92c_bt_rssi_state_change(struct ieee80211_hw *hw)
else
curr_bt_rssi_state &= (~BT_RSSI_STATE_SPECIAL_LOW);
/* Set Tx Power according to BT status. */
if (undec_sm_pwdb >= 30)
curr_bt_rssi_state |= BT_RSSI_STATE_TXPOWER_LOW;
else if (undec_sm_pwdb < 25)
curr_bt_rssi_state &= (~BT_RSSI_STATE_TXPOWER_LOW);
/* Check BT state related to BT_Idle in B/G mode. */
if (undec_sm_pwdb < 15)
curr_bt_rssi_state |= BT_RSSI_STATE_BG_EDCA_LOW;
......
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