From 2622d7d86a57ed8c13df575e62c072eba4b2045a Mon Sep 17 00:00:00 2001
From: Ping-Ke Shih <pkshih@realtek.com>
Date: Tue, 16 May 2017 08:19:53 -0500
Subject: [PATCH] rtlwifi: btcoex: 23b 1ant: TDMA duration for ACL busy
Git-commit: 2622d7d86a57ed8c13df575e62c072eba4b2045a
Patch-mainline: v4.13-rc1
References: FATE#326906
BT ACL is a special case, so we create a routine to deal this case.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Cc: Yan-Hsuan Chuang <yhchuang@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>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
.../rtlwifi/btcoexist/halbtc8723b1ant.c | 54 +++++++++++--------
1 file changed, 31 insertions(+), 23 deletions(-)
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
index 2e1ba8fed982..523e1acfe1cf 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
@@ -1124,6 +1124,11 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
/* acquire the BT TRx retry count from BT_Info byte2 */
retry_count = coex_sta->bt_retry_cnt;
bt_info_ext = coex_sta->bt_info_ext;
+
+ if ((coex_sta->low_priority_tx) > 1050 ||
+ (coex_sta->low_priority_rx) > 1250)
+ retry_count++;
+
result = 0;
wait_count++;
/* no retry in the last 2-second duration */
@@ -1135,6 +1140,9 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
dn = 0;
if (up >= n) {
+ /* if retry count during continuous n*2 seconds
+ * is 0, enlarge WiFi duration
+ */
wait_count = 0;
n = 3;
up = 0;
@@ -1144,6 +1152,7 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
"[BTCoex], Increase wifi duration!!\n");
}
} else if (retry_count <= 3) {
+ /* <=3 retry in the last 2-second duration */
up--;
dn++;
@@ -1151,12 +1160,20 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
up = 0;
if (dn == 2) {
+ /* if continuous 2 retry count(every 2 seconds)
+ * >0 and < 3, reduce WiFi duration
+ */
if (wait_count <= 2)
+ /* avoid loop between the two levels */
m++;
else
m = 1;
if (m >= 20)
+ /* maximum of m = 20 ' will recheck if
+ * need to adjust wifi duration in
+ * maximum time interval 120 seconds
+ */
m = 20;
n = 3 * m;
@@ -1168,12 +1185,20 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
"[BTCoex], Decrease wifi duration for retryCounter<3!!\n");
}
} else {
+ /* retry count > 3, once retry count > 3, to reduce
+ * WiFi duration
+ */
if (wait_count == 1)
+ /* to avoid loop between the two levels */
m++;
else
m = 1;
if (m >= 20)
+ /* maximum of m = 20 ' will recheck if need to
+ * adjust wifi duration in maximum time interval
+ * 120 seconds
+ */
m = 20;
n = 3 * m;
@@ -1186,13 +1211,7 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
}
if (result == -1) {
- if ((BT_INFO_8723B_1ANT_A2DP_BASIC_RATE(bt_info_ext)) &&
- ((coex_dm->cur_ps_tdma == 1) ||
- (coex_dm->cur_ps_tdma == 2))) {
- halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
- true, 9);
- coex_dm->ps_tdma_du_adj_type = 9;
- } else if (coex_dm->cur_ps_tdma == 1) {
+ if (coex_dm->cur_ps_tdma == 1) {
halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
true, 2);
coex_dm->ps_tdma_du_adj_type = 2;
@@ -1206,13 +1225,7 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
coex_dm->ps_tdma_du_adj_type = 11;
}
} else if (result == 1) {
- if ((BT_INFO_8723B_1ANT_A2DP_BASIC_RATE(bt_info_ext)) &&
- ((coex_dm->cur_ps_tdma == 1) ||
- (coex_dm->cur_ps_tdma == 2))) {
- halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
- true, 9);
- coex_dm->ps_tdma_du_adj_type = 9;
- } else if (coex_dm->cur_ps_tdma == 11) {
+ if (coex_dm->cur_ps_tdma == 11) {
halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
true, 9);
coex_dm->ps_tdma_du_adj_type = 9;
@@ -1225,11 +1238,6 @@ void btc8723b1ant_tdma_dur_adj_for_acl(struct btc_coexist *btcoexist,
true, 1);
coex_dm->ps_tdma_du_adj_type = 1;
}
- } else {
- /* if busy / idle change */
- RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
- "[BTCoex],********* TDMA(on, %d) ********\n",
- coex_dm->cur_ps_tdma);
}
if (coex_dm->cur_ps_tdma != 1 && coex_dm->cur_ps_tdma != 2 &&
@@ -1448,12 +1456,12 @@ static void halbtc8723b1ant_action_wifi_connected_bt_acl_busy(
halbtc8723b1ant_coex_table_with_type(btcoexist,
NORMAL_EXEC, 2);
coex_dm->auto_tdma_adjust = false;
- } else { /* for low BT RSSI */
- halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC,
- true, 11);
+ } else {
+ btc8723b1ant_tdma_dur_adj_for_acl(btcoexist,
+ wifi_status);
halbtc8723b1ant_coex_table_with_type(btcoexist,
NORMAL_EXEC, 1);
- coex_dm->auto_tdma_adjust = false;
+ coex_dm->auto_tdma_adjust = true;
}
} else if (bt_link_info->hid_exist &&
bt_link_info->a2dp_exist) { /* HID + A2DP */
--
2.19.2