rtw88: 8821c: support RFE type2 wifi NIC

RFE type2 is a new NIC which has one RF antenna shares with BT.
Update phy parameter to verstion V57 to allow initial procedure
to load extra AGC table for sharing antenna NIC.

Signed-off-by: Guo-Feng Fan <vincent_fann@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210202055012.8296-4-pkshih@realtek.com

Author: rtlwifi-linux

drivers/net/wireless/realtek/rtw88/main.c

@@ -1590,6 +1590,8 @@ static int rtw_chip_board_info_setup(struct rtw_dev *rtwdev)
 	rtw_phy_setup_phy_cond(rtwdev, 0);
 
 	rtw_phy_init_tx_power(rtwdev);
+	if (rfe_def->agc_btg_tbl)
+		rtw_load_table(rtwdev, rfe_def->agc_btg_tbl);
 	rtw_load_table(rtwdev, rfe_def->phy_pg_tbl);
 	rtw_load_table(rtwdev, rfe_def->txpwr_lmt_tbl);
 	rtw_phy_tx_power_by_rate_config(hal);

drivers/net/wireless/realtek/rtw88/main.h

@@ -1042,13 +1042,20 @@ enum rtw_rfe_fem {
 struct rtw_rfe_def {
 	const struct rtw_table *phy_pg_tbl;
 	const struct rtw_table *txpwr_lmt_tbl;
+	const struct rtw_table *agc_btg_tbl;
 };
 
 #define RTW_DEF_RFE(chip, bb_pg, pwrlmt) {				  \
 	.phy_pg_tbl = &rtw ## chip ## _bb_pg_type ## bb_pg ## _tbl,	  \
 	.txpwr_lmt_tbl = &rtw ## chip ## _txpwr_lmt_type ## pwrlmt ## _tbl, \
 	}
 
+#define RTW_DEF_RFE_EXT(chip, bb_pg, pwrlmt, btg) {			  \
+	.phy_pg_tbl = &rtw ## chip ## _bb_pg_type ## bb_pg ## _tbl,	  \
+	.txpwr_lmt_tbl = &rtw ## chip ## _txpwr_lmt_type ## pwrlmt ## _tbl, \
+	.agc_btg_tbl = &rtw ## chip ## _agc_btg_type ## btg ## _tbl, \
+	}
+
 #define RTW_PWR_TRK_5G_1		0
 #define RTW_PWR_TRK_5G_2		1
 #define RTW_PWR_TRK_5G_3		2

drivers/net/wireless/realtek/rtw88/rtw8821c.c

@@ -25,6 +25,13 @@ static void rtw8821ce_efuse_parsing(struct rtw_efuse *efuse,
 	ether_addr_copy(efuse->addr, map->e.mac_addr);
 }
 
+enum rtw8821ce_rf_set {
+	SWITCH_TO_BTG,
+	SWITCH_TO_WLG,
+	SWITCH_TO_WLA,
+	SWITCH_TO_BT,
+};
+
 static int rtw8821c_read_efuse(struct rtw_dev *rtwdev, u8 *log_map)
 {
 	struct rtw_efuse *efuse = &rtwdev->efuse;
@@ -228,6 +235,40 @@ static void rtw8821c_cfg_ldo25(struct rtw_dev *rtwdev, bool enable)
 	rtw_write8(rtwdev, REG_LDO_EFUSE_CTRL + 3, ldo_pwr);
 }
 
+static void rtw8821c_switch_rf_set(struct rtw_dev *rtwdev, u8 rf_set)
+{
+	u32 reg;
+
+	rtw_write32_set(rtwdev, REG_DMEM_CTRL, BIT_WL_RST);
+	rtw_write32_set(rtwdev, REG_SYS_CTRL, BIT_FEN_EN);
+
+	reg = rtw_read32(rtwdev, REG_RFECTL);
+	switch (rf_set) {
+	case SWITCH_TO_BTG:
+		reg |= B_BTG_SWITCH;
+		reg &= ~(B_CTRL_SWITCH | B_WL_SWITCH | B_WLG_SWITCH |
+			 B_WLA_SWITCH);
+		rtw_write32_mask(rtwdev, REG_ENRXCCA, MASKBYTE2, BTG_CCA);
+		rtw_write32_mask(rtwdev, REG_ENTXCCK, MASKLWORD, BTG_LNA);
+		break;
+	case SWITCH_TO_WLG:
+		reg |= B_WL_SWITCH | B_WLG_SWITCH;
+		reg &= ~(B_BTG_SWITCH | B_CTRL_SWITCH | B_WLA_SWITCH);
+		rtw_write32_mask(rtwdev, REG_ENRXCCA, MASKBYTE2, WLG_CCA);
+		rtw_write32_mask(rtwdev, REG_ENTXCCK, MASKLWORD, WLG_LNA);
+		break;
+	case SWITCH_TO_WLA:
+		reg |= B_WL_SWITCH | B_WLA_SWITCH;
+		reg &= ~(B_BTG_SWITCH | B_CTRL_SWITCH | B_WLG_SWITCH);
+		break;
+	case SWITCH_TO_BT:
+	default:
+		break;
+	}
+
+	rtw_write32(rtwdev, REG_RFECTL, reg);
+}
+
 static void rtw8821c_set_channel_rf(struct rtw_dev *rtwdev, u8 channel, u8 bw)
 {
 	u32 rf_reg18;
@@ -261,9 +302,14 @@ 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)
+			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);
 	} else {
+		rtw8821c_switch_rf_set(rtwdev, SWITCH_TO_WLA);
 		rtw_write_rf(rtwdev, RF_PATH_A, RF_LUTDBG, BIT(6), 0x0);
 	}
 
@@ -1450,6 +1496,7 @@ 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),
 };
 
 static struct rtw_hw_reg rtw8821c_dig[] = {

drivers/net/wireless/realtek/rtw88/rtw8821c.h

@@ -181,6 +181,8 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
 #define GET_PHY_STAT_P1_RXSNR_B(phy_stat)                                      \
 	le32_get_bits(*((__le32 *)(phy_stat) + 0x06), GENMASK(15, 8))
 
+#define REG_SYS_CTRL	0x000
+#define BIT_FEN_EN	BIT(26)
 #define REG_INIRTS_RATE_SEL 0x0480
 #define REG_HTSTFWT	0x800
 #define REG_RXPSEL	0x808
@@ -212,6 +214,11 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
 #define REG_FA_CCK	0xa5c
 #define REG_RXDESC	0xa2c
 #define REG_ENTXCCK	0xa80
+#define BTG_LNA		0xfc84
+#define WLG_LNA		0x7532
+#define REG_ENRXCCA	0xa84
+#define BTG_CCA		0x0e
+#define WLG_CCA		0x12
 #define REG_PWRTH2	0xaa8
 #define REG_CSRATIO	0xaaa
 #define REG_TXFILTER	0xaac
@@ -225,6 +232,11 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
 #define REG_RFESEL0	0xcb0
 #define REG_RFESEL8	0xcb4
 #define REG_RFECTL	0xcb8
+#define B_BTG_SWITCH	BIT(16)
+#define B_CTRL_SWITCH	BIT(18)
+#define B_WL_SWITCH	(BIT(20) | BIT(22))
+#define B_WLG_SWITCH	BIT(21)
+#define B_WLA_SWITCH	BIT(23)
 #define REG_RFEINV	0xcbc
 #define REG_AGCTR_B	0xe08
 #define REG_RXIGI_B	0xe50
@@ -235,6 +247,8 @@ _rtw_write32s_mask(struct rtw_dev *rtwdev, u32 addr, u32 mask, u32 data)
 #define REG_CCA_OFDM	0xf08
 #define REG_FA_OFDM	0xf48
 #define REG_CCA_CCK	0xfcc
+#define REG_DMEM_CTRL	0x1080
+#define BIT_WL_RST	BIT(16)
 #define REG_ANTWT	0x1904
 #define REG_IQKFAILMSK	0x1bf0
 #define BIT_MASK_R_RFE_SEL_15	GENMASK(31, 28)