From 4776d349071d6cf85886e85721f71599b832bf72 Mon Sep 17 00:00:00 2001 From: Yan-Hsuan Chuang Date: Thu, 13 Apr 2017 13:06:53 -0500 Subject: [PATCH] rtlwifi: btcoex: 21a 2ant: monitor if bt is slave or not We monitor the packet counter to guess if the bt is slave or not, and when bt is slave, it may receive packet at any time, so we will have to take care about it Signed-off-by: Yan-Hsuan Chuang Signed-off-by: Larry Finger Cc: Pkshih Cc: Birming Chiu Cc: Shaofu Cc: Steven Ting Signed-off-by: Kalle Valo --- .../wireless/realtek/rtlwifi/btcoexist/halbtc8821a2ant.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a2ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a2ant.c index 3e671d409e61..7f685a02d865 100644 --- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a2ant.c +++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a2ant.c @@ -268,6 +268,7 @@ void btc8821a2ant_limited_rx(struct btc_coexist *btcoexist, bool force_exec, static void btc8821a2ant_monitor_bt_ctr(struct btc_coexist *btcoexist) { struct rtl_priv *rtlpriv = btcoexist->adapter; + struct btc_bt_link_info *bt_link_info = &btcoexist->bt_link_info; u32 reg_hp_txrx, reg_lp_txrx, u4tmp; u32 reg_hp_tx = 0, reg_hp_rx = 0, reg_lp_tx = 0, reg_lp_rx = 0; @@ -287,6 +288,13 @@ static void btc8821a2ant_monitor_bt_ctr(struct btc_coexist *btcoexist) coex_sta->low_priority_tx = reg_lp_tx; coex_sta->low_priority_rx = reg_lp_rx; + if ((coex_sta->low_priority_rx >= 950) && + (coex_sta->low_priority_rx >= coex_sta->low_priority_tx) && + (!coex_sta->under_ips)) + bt_link_info->slave_role = true; + else + bt_link_info->slave_role = false; + RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD, "[BTCoex], High Priority Tx/Rx (reg 0x%x) = 0x%x(%d)/0x%x(%d)\n", reg_hp_txrx, reg_hp_tx, reg_hp_tx, reg_hp_rx, reg_hp_rx);