recipes-wifi/linux-mt76/files/patches-3.x/0088-wifi-mt76-mt7996-enable-MLO-capability.patch

From ebe94f1d3aa73deefe0057ae93974a06b55db1ce Mon Sep 17 00:00:00 2001
From: Shayne Chen <shayne.chen@mediatek.com>
Date: Thu, 30 Nov 2023 16:31:17 +0800
Subject: [PATCH 088/116] wifi: mt76: mt7996: enable MLO capability

This is a preliminary patch to add MLO support for mt7996 chipsets.

Signed-off-by: Shayne Chen <shayne.chen@mediatek.com>
---
 mt7996/eeprom.c |  6 ++++++
 mt7996/init.c   | 40 ++++++++++++++++++++++++++++++++++++++--
 2 files changed, 44 insertions(+), 2 deletions(-)

diff --git a/mt7996/eeprom.c b/mt7996/eeprom.c
index 51455d8..0393e93 100644
--- a/mt7996/eeprom.c
+++ b/mt7996/eeprom.c
@@ -387,6 +387,12 @@ static int mt7996_eeprom_parse_band_config(struct mt7996_phy *phy)
 		break;
 	}
 
+	/* TODO: for MLO, we enable all band capabilities */
+	phy->mt76->cap.has_2ghz = true;
+	phy->mt76->cap.has_5ghz = true;
+	if (is_mt7996(&phy->dev->mt76))
+		phy->mt76->cap.has_6ghz = true;
+
 	return ret;
 }
 
diff --git a/mt7996/init.c b/mt7996/init.c
index 381e129..c6eb6a5 100644
--- a/mt7996/init.c
+++ b/mt7996/init.c
@@ -34,16 +34,45 @@ static const struct ieee80211_iface_combination if_comb[] = {
 		.limits = if_limits,
 		.n_limits = ARRAY_SIZE(if_limits),
 		.max_interfaces = MT7996_MAX_INTERFACES,
-		.num_different_channels = 1,
+		.num_different_channels = 3,
 		.beacon_int_infra_match = true,
+		/*
 		.radar_detect_widths = BIT(NL80211_CHAN_WIDTH_20_NOHT) |
 				       BIT(NL80211_CHAN_WIDTH_20) |
 				       BIT(NL80211_CHAN_WIDTH_40) |
 				       BIT(NL80211_CHAN_WIDTH_80) |
 				       BIT(NL80211_CHAN_WIDTH_160),
+		*/
 	}
 };
 
+static const u8 mt7996_if_types_ext_capa[] = {
+	[0] = WLAN_EXT_CAPA1_EXT_CHANNEL_SWITCHING,
+	[7] = WLAN_EXT_CAPA8_OPMODE_NOTIF,
+};
+
+static const struct wiphy_iftype_ext_capab mt7996_iftypes_ext_capa[] = {
+	{
+		.iftype = NL80211_IFTYPE_STATION,
+		.extended_capabilities = mt7996_if_types_ext_capa,
+		.extended_capabilities_mask = mt7996_if_types_ext_capa,
+		.extended_capabilities_len = sizeof(mt7996_if_types_ext_capa),
+		.mld_capa_and_ops = 2,
+	},
+	{
+		.iftype = NL80211_IFTYPE_AP,
+		.extended_capabilities = mt7996_if_types_ext_capa,
+		.extended_capabilities_mask = mt7996_if_types_ext_capa,
+		.extended_capabilities_len = sizeof(mt7996_if_types_ext_capa),
+		.mld_capa_and_ops = 2,
+		/* the max number of simultaneous links is defined as the
+		 * maximum number of affiliated APs minus 1.
+		 * mt7996 could have 3 links in an MLD AP, so currently
+		 * hardcode it to 2.
+		 */
+	},
+};
+
 static ssize_t mt7996_thermal_temp_show(struct device *dev,
 					struct device_attribute *attr,
 					char *buf)
@@ -417,8 +446,9 @@ mt7996_init_wiphy(struct ieee80211_hw *hw, struct mtk_wed_device *wed)
 	ieee80211_hw_set(hw, SUPPORTS_TX_ENCAP_OFFLOAD);
 	ieee80211_hw_set(hw, SUPPORTS_RX_DECAP_OFFLOAD);
 	ieee80211_hw_set(hw, WANT_MONITOR_VIF);
-	ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
+	// ieee80211_hw_set(hw, SUPPORTS_MULTI_BSSID);
 	ieee80211_hw_set(hw, CHANCTX_STA_CSA);
+	ieee80211_hw_set(hw, CONNECTION_MONITOR);
 
 	hw->max_tx_fragments = 4;
 
@@ -462,6 +492,12 @@ mt7996_init_wiphy(struct ieee80211_hw *hw, struct mtk_wed_device *wed)
 
 	wiphy->max_scan_ssids = 4;
 	wiphy->max_scan_ie_len = IEEE80211_MAX_DATA_LEN;
+
+	/* enable MLO support */
+	wiphy->flags |= WIPHY_FLAG_SUPPORTS_MLO;
+	wiphy->iftype_ext_capab = mt7996_iftypes_ext_capa;
+	wiphy->num_iftype_ext_capab = ARRAY_SIZE(mt7996_iftypes_ext_capa);
+	wiphy->features |= NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE;
 }
 
 static void
-- 
2.18.0