From f9e0189cbc2d6447dde392944c769546cdf48140 Mon Sep 17 00:00:00 2001 From: Bitterblue Smith Date: Wed, 23 Oct 2024 17:15:13 +0300 Subject: [PATCH] wifi: rtw88: 8812a: Mitigate beacon loss The RTL8812AU has a reception problem, maybe only in the 5 GHz band. Sometimes, in some positions, it stops receiving anything even though the distance to the AP is only ~3 meters and there are no obstacles. Moving it a few centimeters fixes it. Switch the initial gain to maximum coverage when there is beacon loss. This only helps sometimes. This is similar to what the official driver does. Signed-off-by: Bitterblue Smith Signed-off-by: Ping-Ke Shih Link: https://patch.msgid.link/203f5043-4fe1-4f35-8b8f-d3b6f44e1fd9@gmail.com --- drivers/net/wireless/realtek/rtw88/phy.c | 7 +++++++ 1 file changed, 7 insertions(+) --- a/drivers/net/wireless/realtek/rtw88/phy.c +++ b/drivers/net/wireless/realtek/rtw88/phy.c @@ -530,6 +530,13 @@ static void rtw_phy_dig(struct rtw_dev * */ rtw_phy_dig_recorder(dm_info, cur_igi, fa_cnt); + /* Mitigate beacon loss and connectivity issues, mainly (only?) + * in the 5 GHz band + */ + if (rtwdev->chip->id == RTW_CHIP_TYPE_8812A && rtwdev->beacon_loss && + linked && dm_info->total_fa_cnt < DIG_PERF_FA_TH_EXTRA_HIGH) + cur_igi = DIG_CVRG_MIN; + if (cur_igi != pre_igi) rtw_phy_dig_write(rtwdev, cur_igi); }