rtw89: 8852c: set TX antenna path

To make user space can set TX antenna via iw command. Then, we can diagnose
antenna is connected properly or not, and measure TX power in single path.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220516005215.5878-3-pkshih@realtek.com

drivers/net/wireless/realtek/rtw89/rtw8852c.c

@@ -2360,19 +2360,19 @@ static void rtw8852c_ctrl_tx_path_tmac(struct rtw89_dev *rtwdev, u8 tx_path,
 		rtw89_write32(rtwdev, reg, 0);
 	}
 
-	if (tx_path == RF_PATH_A) {
+	if (tx_path == RF_A) {
 		path_com[0].data = AX_PATH_COM0_PATHA;
 		path_com[1].data = AX_PATH_COM1_PATHA;
 		path_com[2].data = AX_PATH_COM2_PATHA;
 		path_com[7].data = AX_PATH_COM7_PATHA;
 		path_com[8].data = AX_PATH_COM8_PATHA;
-	} else if (tx_path == RF_PATH_B) {
+	} else if (tx_path == RF_B) {
 		path_com[0].data = AX_PATH_COM0_PATHB;
 		path_com[1].data = AX_PATH_COM1_PATHB;
 		path_com[2].data = AX_PATH_COM2_PATHB;
 		path_com[7].data = AX_PATH_COM7_PATHB;
 		path_com[8].data = AX_PATH_COM8_PATHB;
-	} else if (tx_path == RF_PATH_AB) {
+	} else if (tx_path == RF_AB) {
 		path_com[0].data = AX_PATH_COM0_PATHAB;
 		path_com[1].data = AX_PATH_COM1_PATHAB;
 		path_com[2].data = AX_PATH_COM2_PATHAB;
@@ -2457,6 +2457,7 @@ static void rtw8852c_bb_ctrl_btc_preagc(struct rtw89_dev *rtwdev, bool bt_en)
 static void rtw8852c_bb_cfg_txrx_path(struct rtw89_dev *rtwdev)
 {
 	struct rtw89_hal *hal = &rtwdev->hal;
+	u8 ntx_path = hal->antenna_tx ? hal->antenna_tx : RF_AB;
 
 	rtw8852c_bb_cfg_rx_path(rtwdev, RF_PATH_AB);
 
@@ -2472,7 +2473,7 @@ static void rtw8852c_bb_cfg_txrx_path(struct rtw89_dev *rtwdev)
 		rtw89_phy_write32_mask(rtwdev, R_RXHE, B_RXHETB_MAX_NSS, 1);
 	}
 
-	rtw8852c_ctrl_tx_path_tmac(rtwdev, RF_PATH_AB, RTW89_MAC_0);
+	rtw8852c_ctrl_tx_path_tmac(rtwdev, ntx_path, RTW89_MAC_0);
 }
 
 static u8 rtw8852c_get_thermal(struct rtw89_dev *rtwdev, enum rtw89_rf_path rf_path)