wifi: rtw89: 8922a: read efuse content from physical map

The calibration values of thermal and bias are programmed in invariable
physical map. Read them into driver and will set them to registers later.

Signed-off-by: Ping-Ke Shih <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
Link: https://lore.kernel.org/r/[email protected]

Author: Ping-Ke Shih

drivers/net/wireless/realtek/rtw89/core.h

@@ -4345,6 +4345,7 @@ struct rtw89_power_trim_info {
 	bool pg_pa_bias_trim;
 	u8 thermal_trim[RF_PATH_MAX];
 	u8 pa_bias_trim[RF_PATH_MAX];
+	u8 pad_bias_trim[RF_PATH_MAX];
 };
 
 struct rtw89_regd {

drivers/net/wireless/realtek/rtw89/rtw8922a.c

@@ -175,6 +175,92 @@ static int rtw8922a_read_efuse(struct rtw89_dev *rtwdev, u8 *log_map,
 	}
 }
 
+#define THM_TRIM_POSITIVE_MASK BIT(6)
+#define THM_TRIM_MAGNITUDE_MASK GENMASK(5, 0)
+
+static void rtw8922a_phycap_parsing_thermal_trim(struct rtw89_dev *rtwdev,
+						 u8 *phycap_map)
+{
+	static const u32 thm_trim_addr[RF_PATH_NUM_8922A] = {0x1706, 0x1733};
+	struct rtw89_power_trim_info *info = &rtwdev->pwr_trim;
+	u32 addr = rtwdev->chip->phycap_addr;
+	bool pg = true;
+	u8 pg_th;
+	s8 val;
+	u8 i;
+
+	for (i = 0; i < RF_PATH_NUM_8922A; i++) {
+		pg_th = phycap_map[thm_trim_addr[i] - addr];
+		if (pg_th == 0xff) {
+			info->thermal_trim[i] = 0;
+			pg = false;
+			break;
+		}
+
+		val = u8_get_bits(pg_th, THM_TRIM_MAGNITUDE_MASK);
+
+		if (!(pg_th & THM_TRIM_POSITIVE_MASK))
+			val *= -1;
+
+		info->thermal_trim[i] = val;
+
+		rtw89_debug(rtwdev, RTW89_DBG_RFK,
+			    "[THERMAL][TRIM] path=%d thermal_trim=0x%x (%d)\n",
+			    i, pg_th, val);
+	}
+
+	info->pg_thermal_trim = pg;
+}
+
+static void rtw8922a_phycap_parsing_pa_bias_trim(struct rtw89_dev *rtwdev,
+						 u8 *phycap_map)
+{
+	static const u32 pabias_trim_addr[RF_PATH_NUM_8922A] = {0x1707, 0x1734};
+	static const u32 check_pa_pad_trim_addr = 0x1700;
+	struct rtw89_power_trim_info *info = &rtwdev->pwr_trim;
+	u32 addr = rtwdev->chip->phycap_addr;
+	u8 val;
+	u8 i;
+
+	val = phycap_map[check_pa_pad_trim_addr - addr];
+	if (val != 0xff)
+		info->pg_pa_bias_trim = true;
+
+	for (i = 0; i < RF_PATH_NUM_8922A; 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]);
+	}
+}
+
+static void rtw8922a_phycap_parsing_pad_bias_trim(struct rtw89_dev *rtwdev,
+						  u8 *phycap_map)
+{
+	static const u32 pad_bias_trim_addr[RF_PATH_NUM_8922A] = {0x1708, 0x1735};
+	struct rtw89_power_trim_info *info = &rtwdev->pwr_trim;
+	u32 addr = rtwdev->chip->phycap_addr;
+	u8 i;
+
+	for (i = 0; i < RF_PATH_NUM_8922A; i++) {
+		info->pad_bias_trim[i] = phycap_map[pad_bias_trim_addr[i] - addr];
+
+		rtw89_debug(rtwdev, RTW89_DBG_RFK,
+			    "[PAD_BIAS][TRIM] path=%d pad_bias_trim=0x%x\n",
+			    i, info->pad_bias_trim[i]);
+	}
+}
+
+static int rtw8922a_read_phycap(struct rtw89_dev *rtwdev, u8 *phycap_map)
+{
+	rtw8922a_phycap_parsing_thermal_trim(rtwdev, phycap_map);
+	rtw8922a_phycap_parsing_pa_bias_trim(rtwdev, phycap_map);
+	rtw8922a_phycap_parsing_pad_bias_trim(rtwdev, phycap_map);
+
+	return 0;
+}
+
 #ifdef CONFIG_PM
 static const struct wiphy_wowlan_support rtw_wowlan_stub_8922a = {
 	.flags = WIPHY_WOWLAN_MAGIC_PKT | WIPHY_WOWLAN_DISCONNECT,
@@ -186,6 +272,7 @@ static const struct wiphy_wowlan_support rtw_wowlan_stub_8922a = {
 
 static const struct rtw89_chip_ops rtw8922a_chip_ops = {
 	.read_efuse		= rtw8922a_read_efuse,
+	.read_phycap		= rtw8922a_read_phycap,
 };
 
 const struct rtw89_chip_info rtw8922a_chip_info = {