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wifi: mt76: mt7915: report RX chain signal for all RX paths

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status->chains was set from the antenna mask, which is derived from
the number of spatial streams, while the chain_signal array is filled
from all RCPI fields. On boards where the number of RX paths exceeds
the stream count, e.g. the 3T3R mt7916/mt7981 variant with 2 streams
on the 5 GHz band, the RSSI of the extra chains was never reported.

Derive the chain mask from the RX path chainmask instead, shifted by
the band index of the phy owning the frame. On single-adie mt7986 the
main phy is bound to band 1 but its default chainmask is stored
without the band shift, unlike the mask set by mt7915_set_antenna();
fall back to the raw mask when the band group is empty to cover both
stored forms.

Fixes: e57b7901469f ("mt76: add mac80211 driver for MT7915 PCIe-based chipsets")
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2026-08-01 17:46:21 +02:00
parent fa98398ec4
commit f364e31099
1 changed files with 8 additions and 1 deletions
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mt7915/mac.c
+8 -1
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@@ -437,7 +437,14 @@ mt7915_mac_fill_rx(struct mt7915_dev *dev, struct sk_buff *skb,
if (v0 & MT_PRXV_HT_AD_CODE)
status->enc_flags |= RX_ENC_FLAG_LDPC;
status->chains = mphy->antenna_mask;
/* The single-adie mt7986 default chainmask is stored without
* the band shift, unlike the set_antenna path; fall back to
* the raw mask when the band group is empty
*/
status->chains = mphy->chainmask >>
(mphy->band_idx * dev->chainshift);
if (!status->chains)
status->chains = mphy->chainmask;
status->chain_signal[0] = to_rssi(MT_PRXV_RCPI0, v1);
status->chain_signal[1] = to_rssi(MT_PRXV_RCPI1, v1);
status->chain_signal[2] = to_rssi(MT_PRXV_RCPI2, v1);