rtlwifi: btcoex: 21a 2ant: limit rx aggregation size to avoid bt interrupt

Larger packets have higher opportunity to be interrupt by bt signal.
In order to shorten the transmission time, control the packet
aggregation size.
Signed-off-by: Yan-Hsuan Chuang <yhchuang@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Pkshih <pkshih@realtek.com>
Cc: Birming Chiu <birming@realtek.com>
Cc: Shaofu <shaofu@realtek.com>
Cc: Steven Ting <steventing@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>

drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a2ant.c

@@ -244,6 +244,27 @@ static u8 btc8821a2ant_wifi_rssi_state(struct btc_coexist *btcoexist,
 	return wifi_rssi_state;
 }
 
+static
+void btc8821a2ant_limited_rx(struct btc_coexist *btcoexist, bool force_exec,
+			     bool rej_ap_agg_pkt, bool bt_ctrl_agg_buf_size,
+			     u8 agg_buf_size)
+{
+	bool reject_rx_agg = rej_ap_agg_pkt;
+	bool bt_ctrl_rx_agg_size = bt_ctrl_agg_buf_size;
+	u8 rx_agg_size = agg_buf_size;
+
+	/* Rx Aggregation related setting */
+	btcoexist->btc_set(btcoexist, BTC_SET_BL_TO_REJ_AP_AGG_PKT,
+			   &reject_rx_agg);
+	/* decide BT control aggregation buf size or not */
+	btcoexist->btc_set(btcoexist, BTC_SET_BL_BT_CTRL_AGG_SIZE,
+			   &bt_ctrl_rx_agg_size);
+	/* aggregation buf size, works when BT control Rx aggregation size */
+	btcoexist->btc_set(btcoexist, BTC_SET_U1_AGG_BUF_SIZE, &rx_agg_size);
+	/* real update aggregation setting */
+	btcoexist->btc_set(btcoexist, BTC_SET_ACT_AGGREGATE_CTRL, NULL);
+}
+
 static void btc8821a2ant_monitor_bt_ctr(struct btc_coexist *btcoexist)
 {
 	struct rtl_priv *rtlpriv = btcoexist->adapter;
@@ -1141,6 +1162,8 @@ static bool btc8821a2ant_is_common_action(struct btc_coexist *btcoexist)
 		low_pwr_disable = true;
 		btcoexist->btc_set(btcoexist, BTC_SET_ACT_DISABLE_LOW_POWER,
 				   &low_pwr_disable);
+		btc8821a2ant_limited_rx(btcoexist, NORMAL_EXEC, false, false,
+					0x8);
 
 		RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
 			 "[BTCoex], Wifi IPS + BT LPS!!\n");
@@ -1447,6 +1470,7 @@ static void btc8821a2ant_action_sco(struct btc_coexist *btcoexist)
 						       15, 0);
 	bt_rssi_state = btc8821a2ant_bt_rssi_state(btcoexist, 2, 35, 0);
 
+	btc8821a2ant_limited_rx(btcoexist, NORMAL_EXEC, false, false, 0x8);
 	btc8821a2ant_fw_dac_swing_lvl(btcoexist, NORMAL_EXEC, 4);
 
 	if (BTC_RSSI_HIGH(bt_rssi_state))
@@ -1526,6 +1550,7 @@ static void btc8821a2ant_action_hid(struct btc_coexist *btcoexist)
 	wifi_rssi_state = btc8821a2ant_wifi_rssi_state(btcoexist, 0, 2, 15, 0);
 	bt_rssi_state = btc8821a2ant_bt_rssi_state(btcoexist, 2, 35, 0);
 
+	btc8821a2ant_limited_rx(btcoexist, NORMAL_EXEC, false, false, 0x8);
 	btc8821a2ant_fw_dac_swing_lvl(btcoexist, NORMAL_EXEC, 6);
 
 	if (BTC_RSSI_HIGH(bt_rssi_state))
@@ -1816,6 +1841,7 @@ static void btc8821a2ant_action_pan_hs(struct btc_coexist *btcoexist)
 	wifi_rssi_state = btc8821a2ant_wifi_rssi_state(btcoexist, 0, 2, 15, 0);
 	bt_rssi_state = btc8821a2ant_bt_rssi_state(btcoexist, 2, 35, 0);
 
+	btc8821a2ant_limited_rx(btcoexist, NORMAL_EXEC, false, false, 0x8);
 	btc8821a2ant_fw_dac_swing_lvl(btcoexist, NORMAL_EXEC, 6);
 
 	btcoexist->btc_get(btcoexist, BTC_GET_U4_WIFI_BW, &wifi_bw);
@@ -1959,6 +1985,7 @@ static void btc8821a2ant_action_pan_edr_hid(struct btc_coexist *btcoexist)
 	wifi_rssi_state = btc8821a2ant_wifi_rssi_state(btcoexist, 0, 2, 15, 0);
 	bt_rssi_state = btc8821a2ant_bt_rssi_state(btcoexist, 2, 35, 0);
 
+	btc8821a2ant_limited_rx(btcoexist, NORMAL_EXEC, false, false, 0x8);
 	btc8821a2ant_fw_dac_swing_lvl(btcoexist, NORMAL_EXEC, 6);
 
 	if (BTC_RSSI_HIGH(bt_rssi_state))
@@ -2038,6 +2065,7 @@ static void btc8821a2ant_act_hid_a2dp_pan_edr(struct btc_coexist *btcoexist)
 	wifi_rssi_state = btc8821a2ant_wifi_rssi_state(btcoexist, 0, 2, 15, 0);
 	bt_rssi_state = btc8821a2ant_bt_rssi_state(btcoexist, 2, 35, 0);
 
+	btc8821a2ant_limited_rx(btcoexist, NORMAL_EXEC, false, false, 0x8);
 	btc8821a2ant_fw_dac_swing_lvl(btcoexist, NORMAL_EXEC, 6);
 
 	if (BTC_RSSI_HIGH(bt_rssi_state))