@@ -494,11 +494,29 @@ static void rtw_coex_monitor_bt_enable(struct rtw_dev *rtwdev)
struct rtw_coex_stat *coex_stat = &coex->stat;
struct rtw_coex_dm *coex_dm = &coex->dm;
bool bt_disabled = false;
+ bool bt_active = true;
u16 score_board;
if (chip->scbd_support) {
score_board = rtw_coex_read_scbd(rtwdev);
bt_disabled = !(score_board & COEX_SCBD_ONOFF);
+ } else {
+ if (coex_stat->hi_pri_tx == 0 && coex_stat->hi_pri_rx == 0 &&
+ coex_stat->lo_pri_tx == 0 && coex_stat->lo_pri_rx == 0)
+ bt_active = false;
+
+ if (coex_stat->hi_pri_tx == 0xffff && coex_stat->hi_pri_rx == 0xffff &&
+ coex_stat->lo_pri_tx == 0xffff && coex_stat->lo_pri_rx == 0xffff)
+ bt_active = false;
+
+ if (bt_active) {
+ coex_stat->bt_disable_cnt = 0;
+ bt_disabled = false;
+ } else {
+ coex_stat->bt_disable_cnt++;
+ if (coex_stat->bt_disable_cnt >= 10)
+ bt_disabled = true;
+ }
}
if (coex_stat->bt_disabled != bt_disabled) {
@@ -1494,6 +1494,7 @@ struct rtw_coex_stat {
u8 bt_hid_slot;
u8 bt_a2dp_bitpool;
u8 bt_iqk_state;
+ u8 bt_disable_cnt;
u16 wl_beacon_interval;
u8 wl_noisy_level;
All the chips currently supported have a "scoreboard": the chip keeps track of certain things related to bluetooth, for example, whether bluetooth is active. The information can be read from register 0xaa. RTL8821AU doesn't have this. Implement bluetooth activity detection in rtw_coex_monitor_bt_enable() based on the bluetooth TX/RX counters. This is mostly important for RTL8811AU, the version of RTL8821AU without bluetooth. Without this change, the driver thinks bluetooth is active and the wifi speeds are low. Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com> --- v2: - No change. --- drivers/net/wireless/realtek/rtw88/coex.c | 18 ++++++++++++++++++ drivers/net/wireless/realtek/rtw88/main.h | 1 + 2 files changed, 19 insertions(+)