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mt76: mt76x2: fix 2.4 GHz channel gain settings

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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: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2019-03-03 15:12:14 +01:00
parent 45a042e302
commit b8cfd87ac2
1 changed files with 14 additions and 5 deletions
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19
drivers/net/wireless/mediatek/mt76/mt76x2/phy.c
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@ -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);