rtw89: 8852c: add settings to decrease the effect of DC

Modify NBI and PD boost settings according to different primary channels.
This setting can decrease the false alarm induced by DC.
Signed-off-by: Hsuan Hung <hsuan8331@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220506120216.58567-2-pkshih@realtek.com

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

@@ -3822,6 +3822,8 @@
 #define B_CHBW_MOD_SBW GENMASK(13, 12)
 #define B_CHBW_MOD_PRICH GENMASK(11, 8)
 #define B_ANT_RX_SEG0 GENMASK(3, 0)
+#define R_PD_BOOST_EN 0x49E8
+#define B_PD_BOOST_EN BIT(7)
 #define R_P1_BACKOFF_IBADC_V1 0x49F0
 #define B_P1_BACKOFF_IBADC_V1 GENMASK(31, 26)
 #define R_BK_FC0_INV_V1 0x4A1C
@@ -3840,6 +3842,12 @@
 #define B_PATH1_BT_BACKOFF_V1 GENMASK(23, 0)
 #define R_PATH0_FRC_FIR_TYPE_V1 0x4C00
 #define B_PATH0_FRC_FIR_TYPE_MSK_V1 GENMASK(1, 0)
+#define R_PATH0_NOTCH 0x4C14
+#define B_PATH0_NOTCH_EN BIT(12)
+#define B_PATH0_NOTCH_VAL GENMASK(11, 0)
+#define R_PATH0_NOTCH2 0x4C20
+#define B_PATH0_NOTCH2_EN BIT(12)
+#define B_PATH0_NOTCH2_VAL GENMASK(11, 0)
 #define R_PATH0_5MDET 0x4C4C
 #define B_PATH0_5MDET_EN BIT(12)
 #define B_PATH0_5MDET_SB2 BIT(8)
@@ -3847,6 +3855,12 @@
 #define B_PATH0_5MDET_TH GENMASK(5, 0)
 #define R_PATH1_FRC_FIR_TYPE_V1 0x4CC4
 #define B_PATH1_FRC_FIR_TYPE_MSK_V1 GENMASK(1, 0)
+#define R_PATH1_NOTCH 0x4CD8
+#define B_PATH1_NOTCH_EN BIT(12)
+#define B_PATH1_NOTCH_VAL GENMASK(11, 0)
+#define R_PATH1_NOTCH2 0x4CE4
+#define B_PATH1_NOTCH2_EN BIT(12)
+#define B_PATH1_NOTCH2_VAL GENMASK(11, 0)
 #define R_PATH1_5MDET 0x4D10
 #define B_PATH1_5MDET_EN BIT(12)
 #define B_PATH1_5MDET_SB2 BIT(8)

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

@@ -1381,19 +1381,72 @@ static void rtw8852c_set_nbi_tone_idx(struct rtw89_dev *rtwdev,
 	}
 }
 
+static void rtw8852c_spur_notch(struct rtw89_dev *rtwdev, u32 val,
+				enum rtw89_phy_idx phy_idx)
+{
+	u32 notch;
+	u32 notch2;
+
+	if (phy_idx == RTW89_PHY_0) {
+		notch = R_PATH0_NOTCH;
+		notch2 = R_PATH0_NOTCH2;
+	} else {
+		notch = R_PATH1_NOTCH;
+		notch2 = R_PATH1_NOTCH2;
+	}
+
+	rtw89_phy_write32_mask(rtwdev, notch,
+			       B_PATH0_NOTCH_VAL | B_PATH0_NOTCH_EN, val);
+	rtw89_phy_write32_set(rtwdev, notch, B_PATH0_NOTCH_EN);
+	rtw89_phy_write32_mask(rtwdev, notch2,
+			       B_PATH0_NOTCH2_VAL | B_PATH0_NOTCH2_EN, val);
+	rtw89_phy_write32_set(rtwdev, notch2, B_PATH0_NOTCH2_EN);
+}
+
 static void rtw8852c_spur_elimination(struct rtw89_dev *rtwdev,
 				      struct rtw89_channel_params *param,
+				      u8 pri_ch_idx,
 				      enum rtw89_phy_idx phy_idx)
 {
 	rtw8852c_set_csi_tone_idx(rtwdev, param, phy_idx);
 
 	if (phy_idx == RTW89_PHY_0) {
+		if (param->bandwidth == RTW89_CHANNEL_WIDTH_160 &&
+		    (pri_ch_idx == RTW89_SC_20_LOWER ||
+		     pri_ch_idx == RTW89_SC_20_UP3X)) {
+			rtw8852c_spur_notch(rtwdev, 0xe7f, RTW89_PHY_0);
+			if (!rtwdev->dbcc_en)
+				rtw8852c_spur_notch(rtwdev, 0xe7f, RTW89_PHY_1);
+		} else if (param->bandwidth == RTW89_CHANNEL_WIDTH_160 &&
+			   (pri_ch_idx == RTW89_SC_20_UPPER ||
+			    pri_ch_idx == RTW89_SC_20_LOW3X)) {
+			rtw8852c_spur_notch(rtwdev, 0x280, RTW89_PHY_0);
+			if (!rtwdev->dbcc_en)
+				rtw8852c_spur_notch(rtwdev, 0x280, RTW89_PHY_1);
+		} else {
 			rtw8852c_set_nbi_tone_idx(rtwdev, param, RF_PATH_A);
 			if (!rtwdev->dbcc_en)
-			rtw8852c_set_nbi_tone_idx(rtwdev, param, RF_PATH_B);
+				rtw8852c_set_nbi_tone_idx(rtwdev, param,
+							  RF_PATH_B);
+		}
+	} else {
+		if (param->bandwidth == RTW89_CHANNEL_WIDTH_160 &&
+		    (pri_ch_idx == RTW89_SC_20_LOWER ||
+		     pri_ch_idx == RTW89_SC_20_UP3X)) {
+			rtw8852c_spur_notch(rtwdev, 0xe7f, RTW89_PHY_1);
+		} else if (param->bandwidth == RTW89_CHANNEL_WIDTH_160 &&
+			   (pri_ch_idx == RTW89_SC_20_UPPER ||
+			    pri_ch_idx == RTW89_SC_20_LOW3X)) {
+			rtw8852c_spur_notch(rtwdev, 0x280, RTW89_PHY_1);
 		} else {
 			rtw8852c_set_nbi_tone_idx(rtwdev, param, RF_PATH_B);
 		}
+	}
+
+	if (pri_ch_idx == RTW89_SC_20_UP3X || pri_ch_idx == RTW89_SC_20_LOW3X)
+		rtw89_phy_write32_idx(rtwdev, R_PD_BOOST_EN, B_PD_BOOST_EN, 0, phy_idx);
+	else
+		rtw89_phy_write32_idx(rtwdev, R_PD_BOOST_EN, B_PD_BOOST_EN, 1, phy_idx);
 }
 
 static void rtw8852c_5m_mask(struct rtw89_dev *rtwdev,
@@ -1664,7 +1717,7 @@ static void rtw8852c_set_channel_bb(struct rtw89_dev *rtwdev,
 				      B_PD_ARBITER_OFF, 0x1, phy_idx);
 	}
 
-	rtw8852c_spur_elimination(rtwdev, param, phy_idx);
+	rtw8852c_spur_elimination(rtwdev, param, pri_ch_idx, phy_idx);
 	rtw8852c_ctrl_btg(rtwdev, param->band_type == RTW89_BAND_2G);
 	rtw8852c_5m_mask(rtwdev, param, phy_idx);