rtlwifi: btcoex: 21a 1ant: do not switch antenna when wifi is under 5G channel

When wifi is on a 5G channel, the 5G signal will not interfere bt 2.4G
signal, and they can transmit simultaneously, hence there is no need to
switch antenna between wifi and bt.

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>

diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a1ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a1ant.c
index eab04c2bdd3d722307afbc13ea05c59d7682db2b..0509ffab9e6ff7a1fcd66715b45e77918439aa03 100644 (file)
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a1ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8821a1ant.c
@@ -44,6 +44,8 @@ static struct coex_dm_8821a_1ant glcoex_dm_8821a_1ant;
 static struct coex_dm_8821a_1ant *coex_dm = &glcoex_dm_8821a_1ant;
 static struct coex_sta_8821a_1ant glcoex_sta_8821a_1ant;
 static struct coex_sta_8821a_1ant *coex_sta = &glcoex_sta_8821a_1ant;
+static void btc8821a1ant_act_bt_sco_hid_only_busy(struct btc_coexist *btcoexist,
+                                                 u8 wifi_status);
 
 static const char *const glbt_info_src_8821a_1ant[] = {
          "BT Info[wifi fw]",
@@ -1588,7 +1590,8 @@ static void btc8821a1ant_action_bt_inquiry(struct btc_coexist *btcoexist)
 }
 
 static void btc8821a1ant_act_bt_sco_hid_only_busy(struct btc_coexist *btcoexist,
-                                                 u8 wifi_status) {
+                                                 u8 wifi_status)
+{
        /* tdma and coex table */
        btc8821a1ant_ps_tdma(btcoexist, NORMAL_EXEC, true, 5);
 
@@ -2412,9 +2415,17 @@ void ex_btc8821a1ant_display_coex_info(struct btc_coexist *btcoexist)
 void ex_btc8821a1ant_ips_notify(struct btc_coexist *btcoexist, u8 type)
 {
        struct rtl_priv *rtlpriv = btcoexist->adapter;
+       bool wifi_under_5g = false;
 
        if (btcoexist->manual_control || btcoexist->stop_coex_dm)
                return;
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
 
        if (BTC_IPS_ENTER == type) {
                RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
@@ -2458,12 +2469,20 @@ void ex_btc8821a1ant_scan_notify(struct btc_coexist *btcoexist, u8 type)
        struct rtl_priv *rtlpriv = btcoexist->adapter;
        bool wifi_connected = false, bt_hs_on = false;
        bool bt_ctrl_agg_buf_size = false;
+       bool wifi_under_5g = false;
        u32 wifi_link_status = 0;
        u32 num_of_wifi_link = 0;
        u8 agg_buf_size = 5;
 
        if (btcoexist->manual_control || btcoexist->stop_coex_dm)
                return;
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
 
        if (coex_sta->bt_disabled)
                return;
@@ -2523,11 +2542,19 @@ void ex_btc8821a1ant_connect_notify(struct btc_coexist *btcoexist, u8 type)
        u32 wifi_link_status = 0;
        u32 num_of_wifi_link = 0;
        bool bt_ctrl_agg_buf_size = false;
+       bool wifi_under_5g = false;
        u8 agg_buf_size = 5;
 
        if (btcoexist->manual_control || btcoexist->stop_coex_dm ||
            coex_sta->bt_disabled)
                return;
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
 
        btcoexist->btc_get(btcoexist, BTC_GET_U4_WIFI_LINK_STATUS,
                           &wifi_link_status);
@@ -2575,10 +2602,18 @@ void ex_btc8821a1ant_media_status_notify(struct btc_coexist *btcoexist,
        u8 h2c_parameter[3] = {0};
        u32 wifi_bw;
        u8 wifi_central_chnl;
+       bool wifi_under_5g = false;
 
        if (btcoexist->manual_control || btcoexist->stop_coex_dm ||
            coex_sta->bt_disabled)
                return;
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
 
        if (BTC_MEDIA_CONNECT == type) {
                RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
@@ -2622,6 +2657,7 @@ void ex_btc8821a1ant_special_packet_notify(struct btc_coexist *btcoexist,
        struct rtl_priv *rtlpriv = btcoexist->adapter;
        bool bt_hs_on = false;
        bool bt_ctrl_agg_buf_size = false;
+       bool wifi_under_5g = false;
        u32 wifi_link_status = 0;
        u32 num_of_wifi_link = 0;
        u8 agg_buf_size = 5;
@@ -2630,6 +2666,14 @@ void ex_btc8821a1ant_special_packet_notify(struct btc_coexist *btcoexist,
            coex_sta->bt_disabled)
                return;
 
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
+
        coex_sta->special_pkt_period_cnt = 0;
 
        btcoexist->btc_get(btcoexist, BTC_GET_U4_WIFI_LINK_STATUS,
@@ -2818,9 +2862,18 @@ void ex_btc8821a1ant_bt_info_notify(struct btc_coexist *btcoexist,
 void ex_btc8821a1ant_halt_notify(struct btc_coexist *btcoexist)
 {
        struct rtl_priv *rtlpriv = btcoexist->adapter;
+       bool wifi_under_5g = false;
 
        RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
                 "[BTCoex], Halt notify\n");
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
+
 
        btcoexist->stop_coex_dm = true;
 
@@ -2836,6 +2889,15 @@ void ex_btc8821a1ant_halt_notify(struct btc_coexist *btcoexist)
 void ex_btc8821a1ant_pnp_notify(struct btc_coexist *btcoexist, u8 pnp_state)
 {
        struct rtl_priv *rtlpriv = btcoexist->adapter;
+       bool wifi_under_5g = false;
+
+       btcoexist->btc_get(btcoexist, BTC_GET_BL_WIFI_UNDER_5G, &wifi_under_5g);
+       if (wifi_under_5g) {
+               RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+                        "[BTCoex], RunCoexistMechanism(), return for 5G <===\n");
+               btc8821a1ant_coex_under_5g(btcoexist);
+               return;
+       }
 
        RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
                 "[BTCoex], Pnp notify\n");