mt76: mt7921: fix survey-dump reporting

Fix MIB tx-rx MIB counters for survey-dump reporting.

Fixes: 163f4d22 ("mt76: mt7921: add MAC support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7921/init.c

@@ -106,6 +106,10 @@ mt7921_mac_init_band(struct mt7921_dev *dev, u8 band)
 	mt76_set(dev, MT_WF_RMAC_MIB_TIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
 	mt76_set(dev, MT_WF_RMAC_MIB_AIRTIME0(band), MT_WF_RMAC_MIB_RXTIME_EN);
 
+	/* enable MIB tx-rx time reporting */
+	mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_TXDUR_EN);
+	mt76_set(dev, MT_MIB_SCR1(band), MT_MIB_RXDUR_EN);
+
 	mt76_rmw_field(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_MAX_RX_LEN, 1536);
 	/* disable rx rate report by default due to hw issues */
 	mt76_clear(dev, MT_DMA_DCR0(band), MT_DMA_DCR0_RXD_G5_EN);

drivers/net/wireless/mediatek/mt76/mt7921/regs.h

@@ -96,6 +96,10 @@
 #define MT_WF_MIB_BASE(_band)		((_band) ? 0xa4800 : 0x24800)
 #define MT_WF_MIB(_band, ofs)		(MT_WF_MIB_BASE(_band) + (ofs))
 
+#define MT_MIB_SCR1(_band)		MT_WF_MIB(_band, 0x004)
+#define MT_MIB_TXDUR_EN			BIT(8)
+#define MT_MIB_RXDUR_EN			BIT(9)
+
 #define MT_MIB_SDR3(_band)		MT_WF_MIB(_band, 0x698)
 #define MT_MIB_SDR3_FCS_ERR_MASK	GENMASK(31, 16)
 
@@ -108,9 +112,9 @@
 #define MT_MIB_SDR34(_band)		MT_WF_MIB(_band, 0x090)
 #define MT_MIB_MU_BF_TX_CNT		GENMASK(15, 0)
 
-#define MT_MIB_SDR36(_band)		MT_WF_MIB(_band, 0x098)
+#define MT_MIB_SDR36(_band)		MT_WF_MIB(_band, 0x054)
 #define MT_MIB_SDR36_TXTIME_MASK	GENMASK(23, 0)
-#define MT_MIB_SDR37(_band)		MT_WF_MIB(_band, 0x09c)
+#define MT_MIB_SDR37(_band)		MT_WF_MIB(_band, 0x058)
 #define MT_MIB_SDR37_RXTIME_MASK	GENMASK(23, 0)
 
 #define MT_MIB_DR8(_band)		MT_WF_MIB(_band, 0x0c0)