From 53e18bcf3c7a8f7067b37c995733b3d3e6ab720d Mon Sep 17 00:00:00 2001
From: Ping-Ke Shih <pkshih@realtek.com>
Date: Fri, 19 May 2017 10:59:34 -0500
Subject: [PATCH] rtlwifi: btcoex: 23b 1ant: Setup register for BT WHCK test
Git-commit: 53e18bcf3c7a8f7067b37c995733b3d3e6ab720d
Patch-mainline: v4.13-rc1
References: FATE#326906

If BT is under WHCK, we enter a special mode.

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       | 25 +++++++++++++++++++
 .../rtlwifi/btcoexist/halbtc8723b1ant.h       |  1 +
 2 files changed, 26 insertions(+)

diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
index 9509bf4a4635..4279678502d9 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.c
@@ -1701,6 +1701,18 @@ static void halbtc8723b1ant_monitor_bt_enable_disable(struct btc_coexist
  *	Non-Software Coex Mechanism start
  *
  *****************************************************/
+
+static void halbtc8723b1ant_action_bt_whck_test(struct btc_coexist *btcoexist)
+{
+	halbtc8723b1ant_power_save_state(btcoexist, BTC_PS_WIFI_NATIVE, 0x0,
+					 0x0);
+
+	halbtc8723b1ant_ps_tdma(btcoexist, NORMAL_EXEC, false, 8);
+	halbtc8723b1ant_set_ant_path(btcoexist, BTC_ANT_PATH_PTA, NORMAL_EXEC,
+				     false, false);
+	halbtc8723b1ant_coex_table_with_type(btcoexist, NORMAL_EXEC, 0);
+}
+
 static void halbtc8723b1ant_action_wifi_multiport(struct btc_coexist *btcoexist)
 {
 	halbtc8723b1ant_power_save_state(btcoexist, BTC_PS_WIFI_NATIVE,
@@ -2074,6 +2086,13 @@ static void halbtc8723b1ant_run_coexist_mechanism(struct btc_coexist *btcoexist)
 		return;
 	}
 
+	if (coex_sta->bt_whck_test) {
+		RT_TRACE(rtlpriv, COMP_BT_COEXIST, DBG_LOUD,
+			 "[BTCoex], wifi is under IPS !!!\n");
+		halbtc8723b1ant_action_bt_whck_test(btcoexist);
+		return;
+	}
+
 	if (coex_dm->bt_status == BT_8723B_1ANT_BT_STATUS_ACL_BUSY ||
 	    coex_dm->bt_status == BT_8723B_1ANT_BT_STATUS_SCO_BUSY ||
 	    coex_dm->bt_status == BT_8723B_1ANT_BT_STATUS_ACL_SCO_BUSY)
@@ -2883,6 +2902,12 @@ void ex_halbtc8723b1ant_bt_info_notify(struct btc_coexist *btcoexist,
 				 "0x%02x, ", tmp_buf[i]);
 	}
 
+	/* if 0xff, it means BT is under WHCK test */
+	if (bt_info == 0xff)
+		coex_sta->bt_whck_test = true;
+	else
+		coex_sta->bt_whck_test = false;
+
 	if (rsp_source != BT_INFO_SRC_8723B_1ANT_WIFI_FW) {
 		coex_sta->bt_retry_cnt = /* [3:0] */
 			coex_sta->bt_info_c2h[rsp_source][2] & 0xf;
diff --git a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h
index 1cac98e3cc85..47b709159146 100644
--- a/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h
+++ b/drivers/net/wireless/realtek/rtlwifi/btcoexist/halbtc8723b1ant.h
@@ -162,6 +162,7 @@ struct coex_sta_8723b_1ant {
 	bool c2h_bt_info_req_sent;
 	u8 bt_info_c2h[BT_INFO_SRC_8723B_1ANT_MAX][10];
 	u32 bt_info_c2h_cnt[BT_INFO_SRC_8723B_1ANT_MAX];
+	bool bt_whck_test;
 	bool c2h_bt_inquiry_page;
 	bool c2h_bt_remote_name_req;
 	u8 bt_retry_cnt;
-- 
2.19.2