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From:   MeiChia Chiu <MeiChia.Chiu@mediatek.com>
To:     Felix Fietkau <nbd@nbd.name>
CC:     Lorenzo Bianconi <lorenzo.bianconi@redhat.com>,
        Shayne Chen <shayne.chen@mediatek.com>,
        Evelyn Tsai <evelyn.tsai@mediatek.com>,
        Ryder Lee <ryder.lee@mediatek.com>,
        <linux-wireless@vger.kernel.org>,
        <linux-mediatek@lists.infradead.org>,
        MeiChia Chiu <MeiChia.Chiu@mediatek.com>,
        Money Wang <Money.Wang@mediatek.com>
Subject: [PATCH] wifi: mt76: mt7915: remove BW80+80 support
Date:   Thu, 29 Dec 2022 10:11:31 +0800
Message-ID: <20221229021131.9361-1-MeiChia.Chiu@mediatek.com>
MIME-Version: 1.0
Content-Type: text/plain
Precedence: bulk

mt7915 doesn't support bw80+80.

Reviewed-by: Ryder Lee <ryder.lee@mediatek.com>
Reviewed-by: Shayne Chen <shayne.chen@mediatek.com>
Signed-off-by: Money Wang<Money.Wang@mediatek.com>
Signed-off-by: MeiChia Chiu <MeiChia.Chiu@mediatek.com>
---
 .../net/wireless/mediatek/mt76/mt7915/init.c  | 38 +++++--------------
 1 file changed, 9 insertions(+), 29 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/init.c b/drivers/net/wireless/mediatek/mt76/mt7915/init.c
index 571c94835942..c72d673f02dd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/init.c
+++ b/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),
 	}
 };
 
@@ -394,11 +393,6 @@ 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 |
@@ -834,13 +828,9 @@ 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
-			sts_160 = 0;
-	}
+	/* mt7915 doesn't support bw160 */
+	if (is_mt7915(&dev->mt76))
+		sts_160 = 0;
 
 #ifdef CONFIG_MAC80211_MESH
 	if (vif == NL80211_IFTYPE_MESH_POINT)
@@ -894,9 +884,6 @@ 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)
@@ -944,15 +931,10 @@ 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++) {
@@ -1002,8 +984,7 @@ 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;
@@ -1075,12 +1056,11 @@ 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);
 
-- 
2.18.0