wifi: rtw89: coex: Add LPS protocol radio state for RTL8852B

This LPS state will not turn off RF, and it can still do some basic
traffic, only RTL8852B has the state. Coexistence need let Bluetooth
know WiFi is still alive to prevent some Bluetooth performance issue.

Signed-off-by: Ching-Te Ku <ku920601@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230314020617.28193-2-pkshih@realtek.com

diff --git a/drivers/net/wireless/realtek/rtw89/coex.c b/drivers/net/wireless/realtek/rtw89/coex.c
index 3dbd4ee..bd06388 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/coex.c
+++ b/drivers/net/wireless/realtek/rtw89/coex.c
@@ -5728,6 +5728,11 @@ void rtw89_btc_ntfy_radio_state(struct rtw89_dev *rtwdev, enum btc_rfctrl rf_sta
                wl->status.map.lps = BTC_LPS_RF_OFF;
                wl->status.map.busy = 0;
                break;
+       case BTC_RFCTRL_LPS_WL_ON: /* LPS-Protocol (RFon) */
+               wl->status.map.rf_off = 0;
+               wl->status.map.lps = BTC_LPS_RF_ON;
+               wl->status.map.busy = 0;
+               break;
        case BTC_RFCTRL_WL_ON:
        default:
                wl->status.map.rf_off = 0;
@@ -5745,6 +5750,9 @@ void rtw89_btc_ntfy_radio_state(struct rtw89_dev *rtwdev, enum btc_rfctrl rf_sta
                rtw89_btc_fw_en_rpt(rtwdev, RPT_EN_ALL, false);
                if (rf_state == BTC_RFCTRL_WL_OFF)
                        _write_scbd(rtwdev, BTC_WSCB_ALL, false);
+               else if (rf_state == BTC_RFCTRL_LPS_WL_ON &&
+                        wl->status.map.lps_pre != BTC_LPS_OFF)
+                       _update_bt_scbd(rtwdev, true);
        }
 
        btc->dm.cnt_dm[BTC_DCNT_BTCNT_HANG] = 0;
@@ -5755,7 +5763,7 @@ void rtw89_btc_ntfy_radio_state(struct rtw89_dev *rtwdev, enum btc_rfctrl rf_sta
                btc->dm.tdma_instant_excute = 0;
 
        _run_coex(rtwdev, BTC_RSN_NTFY_RADIO_STATE);
-
+       btc->dm.tdma_instant_excute = 0;
        wl->status.map.rf_off_pre = wl->status.map.rf_off;
        wl->status.map.lps_pre = wl->status.map.lps;
 }

diff --git a/drivers/net/wireless/realtek/rtw89/coex.h b/drivers/net/wireless/realtek/rtw89/coex.h
index 38cc53a..f16421c 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/coex.h
+++ b/drivers/net/wireless/realtek/rtw89/coex.h
@@ -131,6 +131,7 @@ enum btc_role_state {
 enum btc_rfctrl {
        BTC_RFCTRL_WL_OFF,
        BTC_RFCTRL_WL_ON,
+       BTC_RFCTRL_LPS_WL_ON,
        BTC_RFCTRL_FW_CTRL,
        BTC_RFCTRL_MAX
 };