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Commit b8cfd87a authored by Felix Fietkau's avatar Felix Fietkau
Browse files

mt76: mt76x2: fix 2.4 GHz channel gain settings 



AGC register 35, 37 override for the low gain setting should only be done
on 5 GHz. Also, 2.4 GHz needs a different value for register 35

Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 45a042e3

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

+14 −5
Original line number Diff line number Diff line
@@ -285,6 +285,7 @@ void mt76x2_phy_update_channel_gain(struct mt76x02_dev *dev) 
{

	u8 *gain = dev->cal.agc_gain_init;

	u8 low_gain_delta, gain_delta;

	u32 agc_35, agc_37;

	bool gain_change;

	int low_gain;

	u32 val;
@@ -323,6 +324,16 @@ void mt76x2_phy_update_channel_gain(struct mt76x02_dev *dev) 
	else

		low_gain_delta = 14;



	agc_37 = 0x2121262c;

	if (dev->mt76.chandef.chan->band == NL80211_BAND_2GHZ)

		agc_35 = 0x11111516;

	else if (low_gain == 2)

		agc_35 = agc_37 = 0x08080808;

	else if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80)

		agc_35 = 0x10101014;

	else

		agc_35 = 0x11111116;



	if (low_gain == 2) {

		mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a990);

		mt76_wr(dev, MT_BBP(AGC, 35), 0x08080808);
@@ -331,15 +342,13 @@ void mt76x2_phy_update_channel_gain(struct mt76x02_dev *dev) 
		dev->cal.agc_gain_adjust = 0;

	} else {

		mt76_wr(dev, MT_BBP(RXO, 18), 0xf000a991);

		if (dev->mt76.chandef.width == NL80211_CHAN_WIDTH_80)

			mt76_wr(dev, MT_BBP(AGC, 35), 0x10101014);

		else

			mt76_wr(dev, MT_BBP(AGC, 35), 0x11111116);

		mt76_wr(dev, MT_BBP(AGC, 37), 0x2121262C);

		gain_delta = 0;

		dev->cal.agc_gain_adjust = low_gain_delta;

	}



	mt76_wr(dev, MT_BBP(AGC, 35), agc_35);

	mt76_wr(dev, MT_BBP(AGC, 37), agc_37);



	dev->cal.agc_gain_cur[0] = gain[0] - gain_delta;

	dev->cal.agc_gain_cur[1] = gain[1] - gain_delta;

	mt76x2_phy_set_gain_val(dev);