From: Sean Wang <sean.wang@mediatek.com>
Date: Sat, 25 Apr 2026 19:50:08 +0000 (-0500)
Subject: wifi: mt76: mt7925: add MBMC event handling
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bcc6e3358a1f946d5f2f8a2547c2a997375100cd;p=thirdparty%2Flinux.git

wifi: mt76: mt7925: add MBMC event handling

Handle MBMC unsolicited events from firmware to report the current MBMC
state. This helps validate MT7927 band setup.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Link: https://patch.msgid.link/20260425195011.790265-19-sean.wang@kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
---

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
index 4691b9b5e2be..6d0429f40b0f 100644
--- a/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mcu.h
@@ -1069,6 +1069,7 @@ enum {
 	MCU_UNI_EVENT_SCAN_DONE = 0x0e,
 	MCU_UNI_EVENT_RDD_REPORT = 0x11,
 	MCU_UNI_EVENT_ROC = 0x27,
+	MCU_UNI_EVENT_MBMC = 0x28,
 	MCU_UNI_EVENT_TX_DONE = 0x2d,
 	MCU_UNI_EVENT_THERMAL = 0x35,
 	MCU_UNI_EVENT_RSSI_MONITOR = 0x41,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index 1cd234737adb..f667eba99a51 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -566,6 +566,34 @@ mt7925_mcu_uni_debug_msg_event(struct mt792x_dev *dev, struct sk_buff *skb)
 	}
 }
 
+static void
+mt7925_mcu_handle_mbmc_event(struct mt792x_dev *dev, struct sk_buff *skb)
+{
+	struct mbmc_conf_tlv *tlv;
+	u32 tlv_len;
+
+	skb_pull(skb, sizeof(struct mt7925_mcu_rxd) + 4);
+	tlv_len = skb->len;
+	tlv = (struct mbmc_conf_tlv *)skb->data;
+
+	while (tlv_len >= sizeof(*tlv) &&
+	       le16_to_cpu(tlv->len) >= sizeof(*tlv) &&
+	       le16_to_cpu(tlv->len) <= tlv_len) {
+		u16 tag = le16_to_cpu(tlv->tag);
+
+		if (tag == UNI_MBMC_SETTING || tag == UNI_MBMC_NO_RESP_SETTING) {
+			dev_dbg(dev->mt76.dev,
+				"MBMC event: tag=%u mbmc_en=%u\n",
+				tag, tlv->mbmc_en);
+			break;
+		}
+
+		tlv_len -= le16_to_cpu(tlv->len);
+		tlv = (struct mbmc_conf_tlv *)
+			((u8 *)tlv + le16_to_cpu(tlv->len));
+	}
+}
+
 static void
 mt7925_mcu_uni_rx_unsolicited_event(struct mt792x_dev *dev,
 				    struct sk_buff *skb)
@@ -584,6 +612,9 @@ mt7925_mcu_uni_rx_unsolicited_event(struct mt792x_dev *dev,
 	case MCU_UNI_EVENT_ROC:
 		mt7925_mcu_uni_roc_event(dev, skb);
 		break;
+	case MCU_UNI_EVENT_MBMC:
+		mt7925_mcu_handle_mbmc_event(dev, skb);
+		break;
 	case MCU_UNI_EVENT_SCAN_DONE:
 		mt7925_mcu_scan_event(dev, skb);
 		return;
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
index 56e2772f3ffe..293f173b23dd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.h
@@ -143,7 +143,8 @@ enum {
 };
 
 enum {
-	UNI_MBMC_SETTING,
+	UNI_MBMC_SETTING = 0,
+	UNI_MBMC_NO_RESP_SETTING = 1,
 };
 
 enum {