From 9ecb64ed07efda833608d1095a5c0ee92179f035 Mon Sep 17 00:00:00 2001 From: Eric Huang Date: Wed, 28 Aug 2024 13:52:16 +0800 Subject: wifi: rtw89: adjust DIG threshold to reduce false alarm Use RSSI without subtracting offset as packet detection lower bound and set an absolute minimal threshold. It's equivalent to setting a higher noise floor, thereby reducing false alarm and improving interference endurance. Signed-off-by: Eric Huang Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/20240828055217.10263-2-pkshih@realtek.com --- drivers/net/wireless/realtek/rtw89/phy.c | 27 ++++++++++++++++++--------- 1 file changed, 18 insertions(+), 9 deletions(-) (limited to 'drivers') diff --git a/drivers/net/wireless/realtek/rtw89/phy.c b/drivers/net/wireless/realtek/rtw89/phy.c index 59b98aa876dd..c7165e757842 100644 --- a/drivers/net/wireless/realtek/rtw89/phy.c +++ b/drivers/net/wireless/realtek/rtw89/phy.c @@ -5401,7 +5401,7 @@ static void rtw89_phy_dig_update_para(struct rtw89_dev *rtwdev) memcpy(dig->igi_rssi_th, igi_rssi_th, sizeof(dig->igi_rssi_th)); } -static const u8 pd_low_th_offset = 20, dynamic_igi_min = 0x20; +static const u8 pd_low_th_offset = 16, dynamic_igi_min = 0x20; static const u8 igi_max_performance_mode = 0x5a; static const u8 dynamic_pd_threshold_max; @@ -5699,38 +5699,47 @@ void rtw89_phy_dig_reset(struct rtw89_dev *rtwdev) } #define IGI_RSSI_MIN 10 +#define ABS_IGI_MIN 0xc void rtw89_phy_dig(struct rtw89_dev *rtwdev) { struct rtw89_dig_info *dig = &rtwdev->dig; bool is_linked = rtwdev->total_sta_assoc > 0; + u8 igi_min; if (unlikely(dig->bypass_dig)) { dig->bypass_dig = false; return; } + rtw89_phy_dig_update_rssi_info(rtwdev); + if (!dig->is_linked_pre && is_linked) { rtw89_debug(rtwdev, RTW89_DBG_DIG, "First connected\n"); rtw89_phy_dig_update_para(rtwdev); + dig->igi_fa_rssi = dig->igi_rssi; } else if (dig->is_linked_pre && !is_linked) { rtw89_debug(rtwdev, RTW89_DBG_DIG, "First disconnected\n"); rtw89_phy_dig_update_para(rtwdev); + dig->igi_fa_rssi = dig->igi_rssi; } dig->is_linked_pre = is_linked; rtw89_phy_dig_igi_offset_by_env(rtwdev); - rtw89_phy_dig_update_rssi_info(rtwdev); - dig->dyn_igi_min = (dig->igi_rssi > IGI_RSSI_MIN) ? - dig->igi_rssi - IGI_RSSI_MIN : 0; - dig->dyn_igi_max = dig->dyn_igi_min + IGI_OFFSET_MAX; - dig->igi_fa_rssi = dig->dyn_igi_min + dig->fa_rssi_ofst; + igi_min = max_t(int, dig->igi_rssi - IGI_RSSI_MIN, 0); + dig->dyn_igi_max = min(igi_min + IGI_OFFSET_MAX, igi_max_performance_mode); + dig->dyn_igi_min = max(igi_min, ABS_IGI_MIN); - dig->igi_fa_rssi = clamp(dig->igi_fa_rssi, dig->dyn_igi_min, - dig->dyn_igi_max); + if (dig->dyn_igi_max >= dig->dyn_igi_min) { + dig->igi_fa_rssi += dig->fa_rssi_ofst; + dig->igi_fa_rssi = clamp(dig->igi_fa_rssi, dig->dyn_igi_min, + dig->dyn_igi_max); + } else { + dig->igi_fa_rssi = dig->dyn_igi_max; + } rtw89_debug(rtwdev, RTW89_DBG_DIG, - "rssi=%03d, dyn(max,min)=(%d,%d), final_rssi=%d\n", + "rssi=%03d, dyn_joint(max,min)=(%d,%d), final_rssi=%d\n", dig->igi_rssi, dig->dyn_igi_max, dig->dyn_igi_min, dig->igi_fa_rssi); -- cgit v1.2.3