wifi: mt76: mt7915: remove BW160 and BW80+80 support

Remove BW160 and BW80+80 capability in mt7915.
Tested-by: NAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: NRyder Lee <ryder.lee@mediatek.com>
Reviewed-by: NShayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Money Wang<Money.Wang@mediatek.com>
Signed-off-by: NMeiChia Chiu <MeiChia.Chiu@mediatek.com>
Signed-off-by: NFelix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7915/init.c

@@ -38,8 +38,7 @@ static const struct ieee80211_iface_combination if_comb[] = {
 				       BIT(NL80211_CHAN_WIDTH_20) |
 				       BIT(NL80211_CHAN_WIDTH_40) |
 				       BIT(NL80211_CHAN_WIDTH_80) |
-				       BIT(NL80211_CHAN_WIDTH_160) |
-				       BIT(NL80211_CHAN_WIDTH_80P80),
+				       BIT(NL80211_CHAN_WIDTH_160),
 	}
 };
 
@@ -407,11 +406,6 @@ mt7915_init_wiphy(struct mt7915_phy *phy)
 			phy->mt76->sband_5g.sband.vht_cap.cap |=
 				IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_7991 |
 				IEEE80211_VHT_CAP_MAX_A_MPDU_LENGTH_EXPONENT_MASK;
-
-			if (!dev->dbdc_support)
-				phy->mt76->sband_5g.sband.vht_cap.cap |=
-					IEEE80211_VHT_CAP_SHORT_GI_160 |
-					IEEE80211_VHT_CAP_SUPP_CHAN_WIDTH_160_80PLUS80MHZ;
 		} else {
 			phy->mt76->sband_5g.sband.vht_cap.cap |=
 				IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454 |
@@ -847,13 +841,9 @@ mt7915_set_stream_he_txbf_caps(struct mt7915_phy *phy,
 	int sts = hweight8(phy->mt76->chainmask);
 	u8 c, sts_160 = sts;
 
-	/* Can do 1/2 of STS in 160Mhz mode for mt7915 */
-	if (is_mt7915(&dev->mt76)) {
-		if (!dev->dbdc_support)
-			sts_160 /= 2;
-		else
+	/* mt7915 doesn't support bw160 */
+	if (is_mt7915(&dev->mt76))
 		sts_160 = 0;
-	}
 
 #ifdef CONFIG_MAC80211_MESH
 	if (vif == NL80211_IFTYPE_MESH_POINT)
@@ -907,9 +897,6 @@ mt7915_set_stream_he_txbf_caps(struct mt7915_phy *phy,
 	elem->phy_cap_info[3] |= IEEE80211_HE_PHY_CAP3_SU_BEAMFORMER;
 	elem->phy_cap_info[4] |= IEEE80211_HE_PHY_CAP4_MU_BEAMFORMER;
 
-	/* num_snd_dim
-	 * for mt7915, max supported sts is 2 for bw > 80MHz and 0 if dbdc
-	 */
 	c = FIELD_PREP(IEEE80211_HE_PHY_CAP5_BEAMFORMEE_NUM_SND_DIM_UNDER_80MHZ_MASK,
 		       sts - 1);
 	if (sts_160)
@@ -957,15 +944,10 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 	int i, idx = 0, nss = hweight8(phy->mt76->antenna_mask);
 	u16 mcs_map = 0;
 	u16 mcs_map_160 = 0;
-	u8 nss_160;
+	u8 nss_160 = nss;
 
-	if (!is_mt7915(&dev->mt76))
-		nss_160 = nss;
-	else if (!dev->dbdc_support)
-		/* Can do 1/2 of NSS streams in 160Mhz mode for mt7915 */
-		nss_160 = nss / 2;
-	else
-		/* Can't do 160MHz with mt7915 dbdc */
+	/* Can't do 160MHz with mt7915 */
+	if (is_mt7915(&dev->mt76))
 		nss_160 = 0;
 
 	for (i = 0; i < 8; i++) {
@@ -1015,8 +997,7 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 		else if (nss_160)
 			he_cap_elem->phy_cap_info[0] =
 				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G |
-				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G |
-				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_80PLUS80_MHZ_IN_5G;
+				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_160MHZ_IN_5G;
 		else
 			he_cap_elem->phy_cap_info[0] =
 				IEEE80211_HE_PHY_CAP0_CHANNEL_WIDTH_SET_40MHZ_80MHZ_IN_5G;
@@ -1088,12 +1069,11 @@ mt7915_init_he_caps(struct mt7915_phy *phy, enum nl80211_band band,
 			break;
 		}
 
+		memset(he_mcs, 0, sizeof(*he_mcs));
 		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_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(phy, he_cap, i);