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From:   Deren Wu <Deren.Wu@mediatek.com>
To:     Felix Fietkau <nbd@nbd.name>, Lorenzo Bianconi <lorenzo@kernel.org>
CC:     Sean Wang <sean.wang@mediatek.com>,
        Soul Huang <Soul.Huang@mediatek.com>,
        YN Chen <YN.Chen@mediatek.com>,
        Leon Yen <Leon.Yen@mediatek.com>,
        "Eric-SY Chang" <Eric-SY.Chang@mediatek.com>,
        Deren Wu <Deren.Wu@mediatek.com>, KM Lin <km.lin@mediatek.com>,
        Robin Chiu <robin.chiu@mediatek.com>,
        CH Yeh <ch.yeh@mediatek.com>, Posh Sun <posh.sun@mediatek.com>,
        Eric Liang <Eric.Liang@mediatek.com>,
        Stella Chang <Stella.Chang@mediatek.com>,
        "Evelyn Tsai" <evelyn.tsai@mediatek.com>,
        Ryder Lee <ryder.lee@mediatek.com>,
        "Shayne Chen" <shayne.chen@mediatek.com>,
        linux-wireless <linux-wireless@vger.kernel.org>,
        linux-mediatek <linux-mediatek@lists.infradead.org>,
        Deren Wu <deren.wu@mediatek.com>,
        "Ming Yen Hsieh" <mingyen.hsieh@mediatek.com>
Subject: [PATCH] mt76: enable the VHT extended NSS BW feature
Date:   Tue, 7 Jun 2022 13:00:46 +0800
Message-ID: <c67b0bd143835dcb97aa1e642bdcdb2f78660c6c.1654576533.git.deren.wu@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

From: Deren Wu <deren.wu@mediatek.com>

According IEEE Std 802.11-2020, its definition is:
Indicates whether the STA is capable of interpreting the Extended NSS BW
Support subfield of the VHT Capabilities Information field.

Some APs, such as Xiaomi AX6000, would check this one for BW settings.
mt76 driver can get max BW capability only if the this field is confgured
properly.

Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
Signed-off-by: Deren Wu <deren.wu@mediatek.com>
---
 drivers/net/wireless/mediatek/mt76/mac80211.c    | 2 ++
 drivers/net/wireless/mediatek/mt76/mt7615/init.c | 1 +
 drivers/net/wireless/mediatek/mt76/mt7915/init.c | 1 +
 drivers/net/wireless/mediatek/mt76/mt7921/init.c | 1 +
 4 files changed, 5 insertions(+)

diff --git a/drivers/net/wireless/mediatek/mt76/mac80211.c b/drivers/net/wireless/mediatek/mt76/mac80211.c
index 5515e1698b27..57e91565488c 100644
--- a/drivers/net/wireless/mediatek/mt76/mac80211.c
+++ b/drivers/net/wireless/mediatek/mt76/mac80211.c
@@ -266,6 +266,8 @@ static void mt76_init_stream_cap(struct mt76_phy *phy,
 	}
 	vht_cap->vht_mcs.rx_mcs_map = cpu_to_le16(mcs_map);
 	vht_cap->vht_mcs.tx_mcs_map = cpu_to_le16(mcs_map);
+	vht_cap->vht_mcs.tx_highest |=
+				cpu_to_le16(IEEE80211_VHT_EXT_NSS_BW_CAPABLE);
 }
 
 void mt76_set_stream_caps(struct mt76_phy *phy, bool vht)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/init.c b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
index a06dcbb8c673..3e076092714e 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7615/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/init.c
@@ -401,6 +401,7 @@ mt7615_init_wiphy(struct ieee80211_hw *hw)
 	ieee80211_hw_set(hw, TX_STATUS_NO_AMPDU_LEN);
 	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 	ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
+	ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
 
 	if (is_mt7615(&phy->dev->mt76))
 		hw->max_tx_fragments = MT_TXP_MAX_BUF_NUM;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 01169853355e..2764c22179fb 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
@@ -365,6 +365,7 @@ mt7915_init_wiphy(struct ieee80211_hw *hw)
 	ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
 	ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
 	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
+	ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
 
 	hw->max_tx_fragments = 4;
 
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/init.c b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
index 48a10aaecc62..920fb3a42740 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/init.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/init.c
@@ -96,6 +96,7 @@ mt7921_init_wiphy(struct ieee80211_hw *hw)
 	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
 	ieee80211_hw_set(hw, SUPPORTS_PS);
 	ieee80211_hw_set(hw, SUPPORTS_DYNAMIC_PS);
+	ieee80211_hw_set(hw, SUPPORTS_VHT_EXT_NSS_BW);
 
 	if (dev->pm.enable)
 		ieee80211_hw_set(hw, CONNECTION_MONITOR);
-- 
2.18.0