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wifi: mt76: mt7996: fix invalid NSS setting when TX path differs from NSS

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The maximum TX path and NSS may differ on a band. For example, one variant
of the MT7992 has 5 TX paths and 4 NSS on the 5 GHz band. To address this,
add orig_antenna_mask to record the maximum NSS and prevent setting an
invalid NSS in mt7996_set_antenna().

Fixes: 69d54ce7491d ("wifi: mt76: mt7996: switch to single multi-radio wiphy")
Signed-off-by: Peter Chiu <[email protected]>
Signed-off-by: Shayne Chen <[email protected]>
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Peter Chiu
2025-05-21 14:44:30 +02:00
committed by Felix Fietkau
parent 7d30840e5b
commit bf22595a1d
3 changed files with 4 additions and 1 deletions
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mt7996/eeprom.c
+1
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@@ -310,6 +310,7 @@ int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
phy->has_aux_rx = true;
mphy->antenna_mask = BIT(nss) - 1;
phy->orig_antenna_mask = mphy->antenna_mask;
mphy->chainmask = (BIT(path) - 1) << dev->chainshift[band_idx];
phy->orig_chainmask = mphy->chainmask;
dev->chainmask |= mphy->chainmask;
mt7996/main.c
+2 -1
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@@ -1526,7 +1526,8 @@ mt7996_set_antenna(struct ieee80211_hw *hw, u32 tx_ant, u32 rx_ant)
u8 shift = dev->chainshift[band_idx];
phy->mt76->chainmask = tx_ant & phy->orig_chainmask;
phy->mt76->antenna_mask = phy->mt76->chainmask >> shift;
phy->mt76->antenna_mask = (phy->mt76->chainmask >> shift) &
phy->orig_antenna_mask;
mt76_set_stream_caps(phy->mt76, true);
mt7996_set_stream_vht_txbf_caps(phy);
mt7996/mt7996.h
+1
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@@ -312,6 +312,7 @@ struct mt7996_phy {
struct mt76_channel_state state_ts;
u16 orig_chainmask;
u16 orig_antenna_mask;
bool has_aux_rx;
bool counter_reset;