rtw88: coex: change the parameter for A2DP when WLAN connecting

The original mechanism may cause A2DP glitch during WiFi connecting AP.
Because the original TDMA may decrease too much A2DP slot.
This patch add a timer and variable to let the case A2DP + WL_Connecting
performed more well.
Signed-off-by: Ching-Te Ku <ku920601@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201109085909.9143-9-pkshih@realtek.com

drivers/net/wireless/realtek/rtw88/coex.c

@@ -1544,10 +1544,10 @@ static void rtw_coex_action_bt_a2dp(struct rtw_dev *rtwdev)
 		else
 			table_case = 9;
 
-		if (coex_stat->wl_gl_busy)
-			tdma_case = 13;
-		else
+		if (coex_stat->wl_connecting || !coex_stat->wl_gl_busy)
 			tdma_case = 14;
+		else
+			tdma_case = 13;
 	} else {
 		/* Non-Shared-Ant */
 		table_case = 112;
@@ -2270,6 +2270,11 @@ void rtw_coex_connect_notify(struct rtw_dev *rtwdev, u8 type)
 	} else if (type == COEX_ASSOCIATE_START) {
 		coex_stat->wl_hi_pri_task1 = true;
 		coex_stat->cnt_wl[COEX_CNT_WL_CONNPKT] = 2;
+		coex_stat->wl_connecting = true;
+		ieee80211_queue_delayed_work(rtwdev->hw,
+					     &coex->wl_connecting_work, 2 * HZ);
+
+		rtw_dbg(rtwdev, RTW_DBG_COEX, "[BTCoex], 2G start\n");
 
 		/* Force antenna setup for no scan result issue */
 		rtw_coex_set_ant_path(rtwdev, true, COEX_SET_ANT_2G);
@@ -2286,6 +2291,8 @@ void rtw_coex_connect_notify(struct rtw_dev *rtwdev, u8 type)
 		coex_stat->wl_hi_pri_task1 = false;
 		coex->freeze = false;
 
+		rtw_dbg(rtwdev, RTW_DBG_COEX, "[BTCoex], 2G finish\n");
+
 		rtw_coex_run_coex(rtwdev, COEX_RSN_2GCONFINISH);
 	}
 }
@@ -2633,6 +2640,19 @@ void rtw_coex_bt_remain_work(struct work_struct *work)
 	mutex_unlock(&rtwdev->mutex);
 }
 
+void rtw_coex_wl_connecting_work(struct work_struct *work)
+{
+	struct rtw_dev *rtwdev = container_of(work, struct rtw_dev,
+					      coex.wl_connecting_work.work);
+	struct rtw_coex_stat *coex_stat = &rtwdev->coex.stat;
+
+	mutex_lock(&rtwdev->mutex);
+	coex_stat->wl_connecting = false;
+	rtw_dbg(rtwdev, RTW_DBG_COEX, "[BTCoex], WL connecting stop!!\n");
+	rtw_coex_run_coex(rtwdev, COEX_RSN_WLSTATUS);
+	mutex_unlock(&rtwdev->mutex);
+}
+
 #ifdef CONFIG_RTW88_DEBUGFS
 #define INFO_SIZE	80
 

drivers/net/wireless/realtek/rtw88/coex.h

@@ -366,6 +366,7 @@ void rtw_coex_bt_reenable_work(struct work_struct *work);
 void rtw_coex_defreeze_work(struct work_struct *work);
 void rtw_coex_wl_remain_work(struct work_struct *work);
 void rtw_coex_bt_remain_work(struct work_struct *work);
+void rtw_coex_wl_connecting_work(struct work_struct *work);
 
 void rtw_coex_power_on_setting(struct rtw_dev *rtwdev);
 void rtw_coex_init_hw_config(struct rtw_dev *rtwdev, bool wifi_only);

drivers/net/wireless/realtek/rtw88/main.c

@@ -1153,6 +1153,7 @@ void rtw_core_stop(struct rtw_dev *rtwdev)
 	cancel_delayed_work_sync(&coex->defreeze_work);
 	cancel_delayed_work_sync(&coex->wl_remain_work);
 	cancel_delayed_work_sync(&coex->bt_remain_work);
+	cancel_delayed_work_sync(&coex->wl_connecting_work);
 
 	mutex_lock(&rtwdev->mutex);
 
@@ -1658,6 +1659,7 @@ int rtw_core_init(struct rtw_dev *rtwdev)
 	INIT_DELAYED_WORK(&coex->defreeze_work, rtw_coex_defreeze_work);
 	INIT_DELAYED_WORK(&coex->wl_remain_work, rtw_coex_wl_remain_work);
 	INIT_DELAYED_WORK(&coex->bt_remain_work, rtw_coex_bt_remain_work);
+	INIT_DELAYED_WORK(&coex->wl_connecting_work, rtw_coex_wl_connecting_work);
 	INIT_WORK(&rtwdev->c2h_work, rtw_c2h_work);
 	INIT_WORK(&rtwdev->fw_recovery_work, rtw_fw_recovery_work);
 	INIT_WORK(&rtwdev->ba_work, rtw_txq_ba_work);

drivers/net/wireless/realtek/rtw88/main.h

@@ -1329,6 +1329,7 @@ struct rtw_coex_stat {
 	bool wl_cck_lock;
 	bool wl_cck_lock_pre;
 	bool wl_cck_lock_ever;
+	bool wl_connecting;
 
 	u32 bt_supported_version;
 	u32 bt_supported_feature;
@@ -1398,6 +1399,7 @@ struct rtw_coex {
 	struct delayed_work defreeze_work;
 	struct delayed_work wl_remain_work;
 	struct delayed_work bt_remain_work;
+	struct delayed_work wl_connecting_work;
 };
 
 #define DPK_RF_REG_NUM 7