recipes-wifi/linux-mt76/files/patches/1039-wifi-mt76-mt7915-add-mt7981-efuse-variants-support.patch

From 90dfcdd20e564dc3b82342141dfd6917899b7b66 Mon Sep 17 00:00:00 2001
From: "Henry.Yen" <henry.yen@mediatek.com>
Date: Mon, 11 Dec 2023 16:01:55 +0800
Subject: [PATCH 1039/1052] wifi: mt76: mt7915 add mt7981 efuse variants
 support

---
 mt7915/eeprom.c | 22 ++++++++++++++++++++++
 mt7915/mt7915.h |  7 ++++++-
 2 files changed, 28 insertions(+), 1 deletion(-)

diff --git a/mt7915/eeprom.c b/mt7915/eeprom.c
index 6133c200..df5e396c 100644
--- a/mt7915/eeprom.c
+++ b/mt7915/eeprom.c
@@ -193,6 +193,21 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev)
 	return mt7915_check_eeprom(dev);
 }
 
+static int mt7915_eeprom_parse_efuse_hw_cap(struct mt7915_dev *dev)
+{
+#define WTBL_SIZE_GROUP		GENMASK(1, 0)
+	u32 buf;
+	int ret;
+
+	ret = mt76_get_of_data_from_nvmem(&dev->mt76, &buf, "variant", 4);
+	if (ret)
+		return ret;
+
+	dev->limited_wtbl_size = buf & WTBL_SIZE_GROUP;
+
+	return 0;
+}
+
 static void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)
 {
 	struct mt7915_dev *dev = phy->dev;
@@ -243,6 +258,13 @@ void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev,
 	u8 path, nss, nss_max = 4, *eeprom = dev->mt76.eeprom.data;
 	struct mt76_phy *mphy = phy->mt76;
 	u8 band = phy->mt76->band_idx;
+	int ret;
+
+	if (is_mt7981(&dev->mt76)) {
+		ret = mt7915_eeprom_parse_efuse_hw_cap(dev);
+		if (ret)
+			dev->limited_wtbl_size = true;
+	}
 
 	mt7915_eeprom_parse_band_config(phy);
 
diff --git a/mt7915/mt7915.h b/mt7915/mt7915.h
index 183d59da..c8f9ed52 100644
--- a/mt7915/mt7915.h
+++ b/mt7915/mt7915.h
@@ -424,6 +424,7 @@ struct mt7915_dev {
 
 	u32 hw_pattern;
 
+	bool limited_wtbl_size;
 	bool dbdc_support;
 	bool flash_mode;
 	bool bin_file_mode;
@@ -698,7 +699,11 @@ void mt7915_tm_rf_test_event(struct mt7915_dev *dev, struct sk_buff *skb);
 
 static inline u16 mt7915_wtbl_size(struct mt7915_dev *dev)
 {
-	return is_mt7915(&dev->mt76) ? MT7915_WTBL_SIZE : MT7916_WTBL_SIZE;
+	if (is_mt7915(&dev->mt76) ||
+	    (is_mt7981(&dev->mt76) && dev->limited_wtbl_size))
+		return MT7915_WTBL_SIZE;
+
+	return MT7916_WTBL_SIZE;
 }
 
 static inline u16 mt7915_eeprom_size(struct mt7915_dev *dev)
-- 
2.18.0