wifi: rtw89: coex: Solved BT PAN profile idle decrease Wi-Fi throughput

Some Bluetooth device will make up connection as PAN link, though the
connection is idle, it will still report the PAN link is active. The
coexistence mechanism will enable TDMA to protect the PAN, it makes
Wi-Fi throughput degrade at least 50%. But the link is idle, don't
need so much bandwidth. Add TDMA case to let Wi-Fi can do traffic 80%
bandwidth.

Signed-off-by: Ching-Te Ku <ku920601@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Link: https://patch.msgid.link/20241003105140.10867-4-pkshih@realtek.com

diff --git a/drivers/net/wireless/realtek/rtw89/coex.c b/drivers/net/wireless/realtek/rtw89/coex.c
index 1c0169e2927efee188075a6afe68b9f9e9e332fd..3350e982ca5a2a6cca8c02cf040b80830320e30d 100644 (file)
--- a/drivers/net/wireless/realtek/rtw89/coex.c
+++ b/drivers/net/wireless/realtek/rtw89/coex.c
@@ -4636,12 +4636,21 @@ static void _action_bt_a2dpsink(struct rtw89_dev *rtwdev)
 static void _action_bt_pan(struct rtw89_dev *rtwdev)
 {
        struct rtw89_btc *btc = &rtwdev->btc;
+       struct rtw89_btc_bt_link_info *bt_linfo = &btc->cx.bt.link_info;
+       struct rtw89_btc_bt_a2dp_desc a2dp = bt_linfo->a2dp_desc;
+       struct rtw89_btc_bt_pan_desc pan = bt_linfo->pan_desc;
 
        _set_ant(rtwdev, NM_EXEC, BTC_PHY_ALL, BTC_ANT_W2G);
 
        switch (btc->cx.state_map) {
        case BTC_WBUSY_BNOSCAN: /* wl-busy + bt-PAN */
-               _set_policy(rtwdev, BTC_CXP_PFIX_TD5050, BTC_ACT_BT_PAN);
+               if (a2dp.active || !pan.exist) {
+                       btc->dm.slot_dur[CXST_W1] = 80;
+                       btc->dm.slot_dur[CXST_B1] = 20;
+                       _set_policy(rtwdev, BTC_CXP_PFIX_TDW1B1, BTC_ACT_BT_PAN);
+               } else {
+                       _set_policy(rtwdev, BTC_CXP_PFIX_TD5050, BTC_ACT_BT_PAN);
+               }
                break;
        case BTC_WBUSY_BSCAN: /* wl-busy + bt-inq + bt-PAN */
                _set_policy(rtwdev, BTC_CXP_PFIX_TD3070, BTC_ACT_BT_PAN);