mt76: introduce mt76x02_init_agc_gain routine

Add mt76x02_init_agc_gain routine in mt76x02-lib moudule in
order to be reused by mt76x0 for vga initalization
Signed-off-by: NLorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x02_phy.c

@@ -244,3 +244,15 @@ bool mt76x02_phy_adjust_vga_gain(struct mt76x02_dev *dev)
 	return ret;
 }
 EXPORT_SYMBOL_GPL(mt76x02_phy_adjust_vga_gain);
+
+void mt76x02_init_agc_gain(struct mt76x02_dev *dev)
+{
+	dev->cal.agc_gain_init[0] = mt76_get_field(dev, MT_BBP(AGC, 8),
+						   MT_BBP_AGC_GAIN);
+	dev->cal.agc_gain_init[1] = mt76_get_field(dev, MT_BBP(AGC, 9),
+						   MT_BBP_AGC_GAIN);
+	memcpy(dev->cal.agc_gain_cur, dev->cal.agc_gain_init,
+	       sizeof(dev->cal.agc_gain_cur));
+	dev->cal.low_gain = -1;
+}
+EXPORT_SYMBOL_GPL(mt76x02_init_agc_gain);

drivers/net/wireless/mediatek/mt76/mt76x02_phy.h

@@ -56,5 +56,6 @@ void mt76x02_phy_set_bw(struct mt76x02_dev *dev, int width, u8 ctrl);
 void mt76x02_phy_set_band(struct mt76x02_dev *dev, int band,
 			  bool primary_upper);
 bool mt76x02_phy_adjust_vga_gain(struct mt76x02_dev *dev);
+void mt76x02_init_agc_gain(struct mt76x02_dev *dev);
 
 #endif /* __MT76x02_PHY_H */

drivers/net/wireless/mediatek/mt76/mt76x2/pci_phy.c

@@ -124,13 +124,6 @@ void mt76x2_phy_set_antenna(struct mt76x02_dev *dev)
 	mt76_wr(dev, MT_BBP(AGC, 0), val);
 }
 
-static void
-mt76x2_get_agc_gain(struct mt76x02_dev *dev, u8 *dest)
-{
-	dest[0] = mt76_get_field(dev, MT_BBP(AGC, 8), MT_BBP_AGC_GAIN);
-	dest[1] = mt76_get_field(dev, MT_BBP(AGC, 9), MT_BBP_AGC_GAIN);
-}
-
 static void
 mt76x2_phy_set_gain_val(struct mt76x02_dev *dev)
 {
@@ -340,11 +333,8 @@ int mt76x2_phy_set_channel(struct mt76x02_dev *dev,
 	if (scan)
 		return 0;
 
-	dev->cal.low_gain = -1;
 	mt76x2_phy_channel_calibrate(dev, true);
-	mt76x2_get_agc_gain(dev, dev->cal.agc_gain_init);
-	memcpy(dev->cal.agc_gain_cur, dev->cal.agc_gain_init,
-	       sizeof(dev->cal.agc_gain_cur));
+	mt76x02_init_agc_gain(dev);
 
 	/* init default values for temp compensation */
 	if (mt76x2_tssi_enabled(dev)) {