From b789e3fe7047296be0ccdbb7ceb0b58856053572 Mon Sep 17 00:00:00 2001
From: Guo-Feng Fan <vincent_fann@realtek.com>
Date: Wed, 22 Sep 2021 10:36:36 +0800
Subject: [PATCH] rtw88: 8821c: support RFE type4 wifi NIC
Git-commit: b789e3fe7047296be0ccdbb7ceb0b58856053572
Patch-mainline: v5.16-rc1
References: git-fixes

RFE type4 is a new NIC which has one RF antenna shares with BT.
RFE type4 HW is the same as RFE type2 but attaching antenna to
aux antenna connector.

RFE type2 attach antenna to main antenna connector.
Load the same parameter as RFE type2 when initializing NIC.

Signed-off-by: Guo-Feng Fan <vincent_fann@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210922023637.9357-1-pkshih@realtek.com
Acked-by: Takashi Iwai <tiwai@suse.de>

---
 drivers/net/wireless/realtek/rtw88/rtw8821c.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/drivers/net/wireless/realtek/rtw88/rtw8821c.c b/drivers/net/wireless/realtek/rtw88/rtw8821c.c
index 349eef1a0ff2..3effdf902f22 100644
--- a/drivers/net/wireless/realtek/rtw88/rtw8821c.c
+++ b/drivers/net/wireless/realtek/rtw88/rtw8821c.c
@@ -305,7 +305,8 @@ static void rtw8821c_set_channel_rf(struct rtw_dev *rtwdev, u8 channel, u8 bw)
 	if (channel <= 14) {
 		if (rtwdev->efuse.rfe_option == 0)
 			rtw8821c_switch_rf_set(rtwdev, SWITCH_TO_WLG);
-		else if (rtwdev->efuse.rfe_option == 2)
+		else if (rtwdev->efuse.rfe_option == 2 ||
+			 rtwdev->efuse.rfe_option == 4)
 			rtw8821c_switch_rf_set(rtwdev, SWITCH_TO_BTG);
 		rtw_write_rf(rtwdev, RF_PATH_A, RF_LUTDBG, BIT(6), 0x1);
 		rtw_write_rf(rtwdev, RF_PATH_A, 0x64, 0xf, 0xf);
@@ -774,6 +775,15 @@ static void rtw8821c_coex_cfg_ant_switch(struct rtw_dev *rtwdev, u8 ctrl_type,
 	if (switch_status == coex_dm->cur_switch_status)
 		return;
 
+	if (coex_rfe->wlg_at_btg) {
+		ctrl_type = COEX_SWITCH_CTRL_BY_BBSW;
+
+		if (coex_rfe->ant_switch_polarity)
+			pos_type = COEX_SWITCH_TO_WLA;
+		else
+			pos_type = COEX_SWITCH_TO_WLG_BT;
+	}
+
 	coex_dm->cur_switch_status = switch_status;
 
 	if (coex_rfe->ant_switch_diversity &&
@@ -1499,6 +1509,7 @@ static const struct rtw_intf_phy_para_table phy_para_table_8821c = {
 static const struct rtw_rfe_def rtw8821c_rfe_defs[] = {
 	[0] = RTW_DEF_RFE(8821c, 0, 0),
 	[2] = RTW_DEF_RFE_EXT(8821c, 0, 0, 2),
+	[4] = RTW_DEF_RFE_EXT(8821c, 0, 0, 2),
 };
 
 static struct rtw_hw_reg rtw8821c_dig[] = {
-- 
2.35.3