wifi: rtw89: 8851b: add to parse efuse content

Parse efuse content to recognize MAC address, RFE type, XTAL offset and
so on. And, parse offset of PHY capability to retrieve TX power
calibration data.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230512061220.16544-7-pkshih@realtek.com

2 files changed, 269 insertions, 0 deletions

diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b.c b/drivers/net/wireless/realtek/rtw89/rtw8851b.c
index 898a509454a1..6ecdd3d3f776 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8851b.c
+++ b/drivers/net/wireless/realtek/rtw89/rtw8851b.c
@@ -296,6 +296,212 @@ static int rtw8851b_pwr_off_func(struct rtw89_dev *rtwdev)
 	return 0;
 }
 
+static void rtw8851b_efuse_parsing(struct rtw89_efuse *efuse,
+				   struct rtw8851b_efuse *map)
+{
+	ether_addr_copy(efuse->addr, map->e.mac_addr);
+	efuse->rfe_type = map->rfe_type;
+	efuse->xtal_cap = map->xtal_k;
+}
+
+static void rtw8851b_efuse_parsing_tssi(struct rtw89_dev *rtwdev,
+					struct rtw8851b_efuse *map)
+{
+	struct rtw89_tssi_info *tssi = &rtwdev->tssi;
+	struct rtw8851b_tssi_offset *ofst[] = {&map->path_a_tssi};
+	u8 i, j;
+
+	tssi->thermal[RF_PATH_A] = map->path_a_therm;
+
+	for (i = 0; i < RF_PATH_NUM_8851B; i++) {
+		memcpy(tssi->tssi_cck[i], ofst[i]->cck_tssi,
+		       sizeof(ofst[i]->cck_tssi));
+
+		for (j = 0; j < TSSI_CCK_CH_GROUP_NUM; j++)
+			rtw89_debug(rtwdev, RTW89_DBG_TSSI,
+				    "[TSSI][EFUSE] path=%d cck[%d]=0x%x\n",
+				    i, j, tssi->tssi_cck[i][j]);
+
+		memcpy(tssi->tssi_mcs[i], ofst[i]->bw40_tssi,
+		       sizeof(ofst[i]->bw40_tssi));
+		memcpy(tssi->tssi_mcs[i] + TSSI_MCS_2G_CH_GROUP_NUM,
+		       ofst[i]->bw40_1s_tssi_5g, sizeof(ofst[i]->bw40_1s_tssi_5g));
+
+		for (j = 0; j < TSSI_MCS_CH_GROUP_NUM; j++)
+			rtw89_debug(rtwdev, RTW89_DBG_TSSI,
+				    "[TSSI][EFUSE] path=%d mcs[%d]=0x%x\n",
+				    i, j, tssi->tssi_mcs[i][j]);
+	}
+}
+
+static bool _decode_efuse_gain(u8 data, s8 *high, s8 *low)
+{
+	if (high)
+		*high = sign_extend32(u8_get_bits(data, GENMASK(7,  4)), 3);
+	if (low)
+		*low = sign_extend32(u8_get_bits(data, GENMASK(3,  0)), 3);
+
+	return data != 0xff;
+}
+
+static void rtw8851b_efuse_parsing_gain_offset(struct rtw89_dev *rtwdev,
+					       struct rtw8851b_efuse *map)
+{
+	struct rtw89_phy_efuse_gain *gain = &rtwdev->efuse_gain;
+	bool valid = false;
+
+	valid |= _decode_efuse_gain(map->rx_gain_2g_cck,
+				    &gain->offset[RF_PATH_A][RTW89_GAIN_OFFSET_2G_CCK],
+				    NULL);
+	valid |= _decode_efuse_gain(map->rx_gain_2g_ofdm,
+				    &gain->offset[RF_PATH_A][RTW89_GAIN_OFFSET_2G_OFDM],
+				    NULL);
+	valid |= _decode_efuse_gain(map->rx_gain_5g_low,
+				    &gain->offset[RF_PATH_A][RTW89_GAIN_OFFSET_5G_LOW],
+				    NULL);
+	valid |= _decode_efuse_gain(map->rx_gain_5g_mid,
+				    &gain->offset[RF_PATH_A][RTW89_GAIN_OFFSET_5G_MID],
+				   NULL);
+	valid |= _decode_efuse_gain(map->rx_gain_5g_high,
+				    &gain->offset[RF_PATH_A][RTW89_GAIN_OFFSET_5G_HIGH],
+				    NULL);
+
+	gain->offset_valid = valid;
+}
+
+static int rtw8851b_read_efuse(struct rtw89_dev *rtwdev, u8 *log_map)
+{
+	struct rtw89_efuse *efuse = &rtwdev->efuse;
+	struct rtw8851b_efuse *map;
+
+	map = (struct rtw8851b_efuse *)log_map;
+
+	efuse->country_code[0] = map->country_code[0];
+	efuse->country_code[1] = map->country_code[1];
+	rtw8851b_efuse_parsing_tssi(rtwdev, map);
+	rtw8851b_efuse_parsing_gain_offset(rtwdev, map);
+
+	switch (rtwdev->hci.type) {
+	case RTW89_HCI_TYPE_PCIE:
+		rtw8851b_efuse_parsing(efuse, map);
+		break;
+	default:
+		return -EOPNOTSUPP;
+	}
+
+	rtw89_info(rtwdev, "chip rfe_type is %d\n", efuse->rfe_type);
+
+	return 0;
+}
+
+static void rtw8851b_phycap_parsing_tssi(struct rtw89_dev *rtwdev, u8 *phycap_map)
+{
+	struct rtw89_tssi_info *tssi = &rtwdev->tssi;
+	static const u32 tssi_trim_addr[RF_PATH_NUM_8851B] = {0x5D6};
+	u32 addr = rtwdev->chip->phycap_addr;
+	bool pg = false;
+	u32 ofst;
+	u8 i, j;
+
+	for (i = 0; i < RF_PATH_NUM_8851B; i++) {
+		for (j = 0; j < TSSI_TRIM_CH_GROUP_NUM; j++) {
+			/* addrs are in decreasing order */
+			ofst = tssi_trim_addr[i] - addr - j;
+			tssi->tssi_trim[i][j] = phycap_map[ofst];
+
+			if (phycap_map[ofst] != 0xff)
+				pg = true;
+		}
+	}
+
+	if (!pg) {
+		memset(tssi->tssi_trim, 0, sizeof(tssi->tssi_trim));
+		rtw89_debug(rtwdev, RTW89_DBG_TSSI,
+			    "[TSSI][TRIM] no PG, set all trim info to 0\n");
+	}
+
+	for (i = 0; i < RF_PATH_NUM_8851B; i++)
+		for (j = 0; j < TSSI_TRIM_CH_GROUP_NUM; j++)
+			rtw89_debug(rtwdev, RTW89_DBG_TSSI,
+				    "[TSSI] path=%d idx=%d trim=0x%x addr=0x%x\n",
+				    i, j, tssi->tssi_trim[i][j],
+				    tssi_trim_addr[i] - j);
+}
+
+static void rtw8851b_phycap_parsing_thermal_trim(struct rtw89_dev *rtwdev,
+						 u8 *phycap_map)
+{
+	struct rtw89_power_trim_info *info = &rtwdev->pwr_trim;
+	static const u32 thm_trim_addr[RF_PATH_NUM_8851B] = {0x5DF};
+	u32 addr = rtwdev->chip->phycap_addr;
+	u8 i;
+
+	for (i = 0; i < RF_PATH_NUM_8851B; i++) {
+		info->thermal_trim[i] = phycap_map[thm_trim_addr[i] - addr];
+
+		rtw89_debug(rtwdev, RTW89_DBG_RFK,
+			    "[THERMAL][TRIM] path=%d thermal_trim=0x%x\n",
+			    i, info->thermal_trim[i]);
+
+		if (info->thermal_trim[i] != 0xff)
+			info->pg_thermal_trim = true;
+	}
+}
+
+static void rtw8851b_phycap_parsing_pa_bias_trim(struct rtw89_dev *rtwdev,
+						 u8 *phycap_map)
+{
+	struct rtw89_power_trim_info *info = &rtwdev->pwr_trim;
+	static const u32 pabias_trim_addr[] = {0x5DE};
+	u32 addr = rtwdev->chip->phycap_addr;
+	u8 i;
+
+	for (i = 0; i < RF_PATH_NUM_8851B; i++) {
+		info->pa_bias_trim[i] = phycap_map[pabias_trim_addr[i] - addr];
+
+		rtw89_debug(rtwdev, RTW89_DBG_RFK,
+			    "[PA_BIAS][TRIM] path=%d pa_bias_trim=0x%x\n",
+			    i, info->pa_bias_trim[i]);
+
+		if (info->pa_bias_trim[i] != 0xff)
+			info->pg_pa_bias_trim = true;
+	}
+}
+
+static void rtw8851b_phycap_parsing_gain_comp(struct rtw89_dev *rtwdev, u8 *phycap_map)
+{
+	static const u32 comp_addrs[][RTW89_SUBBAND_2GHZ_5GHZ_NR] = {
+		{0x5BB, 0x5BA, 0, 0x5B9, 0x5B8},
+	};
+	struct rtw89_phy_efuse_gain *gain = &rtwdev->efuse_gain;
+	u32 phycap_addr = rtwdev->chip->phycap_addr;
+	bool valid = false;
+	int path, i;
+	u8 data;
+
+	for (path = 0; path < BB_PATH_NUM_8851B; path++)
+		for (i = 0; i < RTW89_SUBBAND_2GHZ_5GHZ_NR; i++) {
+			if (comp_addrs[path][i] == 0)
+				continue;
+
+			data = phycap_map[comp_addrs[path][i] - phycap_addr];
+			valid |= _decode_efuse_gain(data, NULL,
+						    &gain->comp[path][i]);
+		}
+
+	gain->comp_valid = valid;
+}
+
+static int rtw8851b_read_phycap(struct rtw89_dev *rtwdev, u8 *phycap_map)
+{
+	rtw8851b_phycap_parsing_tssi(rtwdev, phycap_map);
+	rtw8851b_phycap_parsing_thermal_trim(rtwdev, phycap_map);
+	rtw8851b_phycap_parsing_pa_bias_trim(rtwdev, phycap_map);
+	rtw8851b_phycap_parsing_gain_comp(rtwdev, phycap_map);
+
+	return 0;
+}
+
 static void rtw8851b_set_bb_gpio(struct rtw89_dev *rtwdev, u8 gpio_idx, bool inv,
 				 u8 src_sel)
 {
@@ -1501,6 +1707,8 @@ static const struct rtw89_chip_ops rtw8851b_chip_ops = {
 	.write_rf		= rtw89_phy_write_rf_v1,
 	.set_channel		= rtw8851b_set_channel,
 	.set_channel_help	= rtw8851b_set_channel_help,
+	.read_efuse		= rtw8851b_read_efuse,
+	.read_phycap		= rtw8851b_read_phycap,
 	.fem_setup		= NULL,
 	.rfe_gpio		= rtw8851b_rfe_gpio,
 	.pwr_on_func		= rtw8851b_pwr_on_func,
diff --git a/drivers/net/wireless/realtek/rtw89/rtw8851b.h b/drivers/net/wireless/realtek/rtw89/rtw8851b.h
index e34b7d09ad6d..1a5c52654d8a 100644
--- a/drivers/net/wireless/realtek/rtw89/rtw8851b.h
+++ b/drivers/net/wireless/realtek/rtw89/rtw8851b.h
@@ -10,6 +10,67 @@
 #define RF_PATH_NUM_8851B 1
 #define BB_PATH_NUM_8851B 1
 
+struct rtw8851bu_efuse {
+	u8 rsvd[0x88];
+	u8 mac_addr[ETH_ALEN];
+};
+
+struct rtw8851be_efuse {
+	u8 mac_addr[ETH_ALEN];
+};
+
+struct rtw8851b_tssi_offset {
+	u8 cck_tssi[TSSI_CCK_CH_GROUP_NUM];
+	u8 bw40_tssi[TSSI_MCS_2G_CH_GROUP_NUM];
+	u8 rsvd[7];
+	u8 bw40_1s_tssi_5g[TSSI_MCS_5G_CH_GROUP_NUM];
+} __packed;
+
+struct rtw8851b_efuse {
+	u8 rsvd[0x210];
+	struct rtw8851b_tssi_offset path_a_tssi;
+	u8 rsvd1[136];
+	u8 channel_plan;
+	u8 xtal_k;
+	u8 rsvd2;
+	u8 iqk_lck;
+	u8 rsvd3[8];
+	u8 eeprom_version;
+	u8 customer_id;
+	u8 tx_bb_swing_2g;
+	u8 tx_bb_swing_5g;
+	u8 tx_cali_pwr_trk_mode;
+	u8 trx_path_selection;
+	u8 rfe_type;
+	u8 country_code[2];
+	u8 rsvd4[3];
+	u8 path_a_therm;
+	u8 rsvd5[3];
+	u8 rx_gain_2g_ofdm;
+	u8 rsvd6;
+	u8 rx_gain_2g_cck;
+	u8 rsvd7;
+	u8 rx_gain_5g_low;
+	u8 rsvd8;
+	u8 rx_gain_5g_mid;
+	u8 rsvd9;
+	u8 rx_gain_5g_high;
+	u8 rsvd10[35];
+	u8 path_a_cck_pwr_idx[6];
+	u8 path_a_bw40_1tx_pwr_idx[5];
+	u8 path_a_ofdm_1tx_pwr_idx_diff:4;
+	u8 path_a_bw20_1tx_pwr_idx_diff:4;
+	u8 path_a_bw20_2tx_pwr_idx_diff:4;
+	u8 path_a_bw40_2tx_pwr_idx_diff:4;
+	u8 path_a_cck_2tx_pwr_idx_diff:4;
+	u8 path_a_ofdm_2tx_pwr_idx_diff:4;
+	u8 rsvd11[0xf2];
+	union {
+		struct rtw8851bu_efuse u;
+		struct rtw8851be_efuse e;
+	};
+} __packed;
+
 extern const struct rtw89_chip_info rtw8851b_chip_info;
 
 #endif