mt76: mt7915: fix he_mcs capabilities for 160mhz

At 160, this chip can only do 2x2 NSS.  Fix the features
accordingly, verified it shows up properly in iw phy foo info
now.

Signed-off-by: Ben Greear <greearb@candelatech.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index bfe1345..a5b871e 100644 (file)
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -646,12 +646,19 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 {
        int i, idx = 0, nss = hweight8(phy->mt76->chainmask);
        u16 mcs_map = 0;
+       u16 mcs_map_160 = 0;
 
        for (i = 0; i < 8; i++) {
                if (i < nss)
                        mcs_map |= (IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2));
                else
                        mcs_map |= (IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2));
+
+               /* Can do 1/2 of NSS streams in 160Mhz mode. */
+               if (i < nss / 2)
+                       mcs_map_160 |= (IEEE80211_HE_MCS_SUPPORT_0_11 << (i * 2));
+               else
+                       mcs_map_160 |= (IEEE80211_HE_MCS_NOT_SUPPORTED << (i * 2));
        }
 
        for (i = 0; i < NUM_NL80211_IFTYPES; i++) {
@@ -753,10 +760,10 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 
                he_mcs->rx_mcs_80 = cpu_to_le16(mcs_map);
                he_mcs->tx_mcs_80 = cpu_to_le16(mcs_map);
-               he_mcs->rx_mcs_160 = cpu_to_le16(mcs_map);
-               he_mcs->tx_mcs_160 = cpu_to_le16(mcs_map);
-               he_mcs->rx_mcs_80p80 = cpu_to_le16(mcs_map);
-               he_mcs->tx_mcs_80p80 = cpu_to_le16(mcs_map);
+               he_mcs->rx_mcs_160 = cpu_to_le16(mcs_map_160);
+               he_mcs->tx_mcs_160 = cpu_to_le16(mcs_map_160);
+               he_mcs->rx_mcs_80p80 = cpu_to_le16(mcs_map_160);
+               he_mcs->tx_mcs_80p80 = cpu_to_le16(mcs_map_160);
 
                mt7915_set_stream_he_txbf_caps(he_cap, i, nss);