recipes-wifi/linux-mt76/files/patches-3.x/0055-mtk-wifi-mt76-mt7996-add-kite-part-number-support.patch

From 1b54509046b166213c2e9611d6d4db9d8b42e493 Mon Sep 17 00:00:00 2001
From: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
Date: Wed, 27 Mar 2024 17:50:16 +0800
Subject: [PATCH 055/116] mtk: wifi: mt76: mt7996: add kite part number support

Signed-off-by: StanleyYP Wang <StanleyYP.Wang@mediatek.com>
---
 mt7996/eeprom.c | 35 +++++++++++++++++++++++------------
 1 file changed, 23 insertions(+), 12 deletions(-)

diff --git a/mt7996/eeprom.c b/mt7996/eeprom.c
index 9987bda..51455d8 100644
--- a/mt7996/eeprom.c
+++ b/mt7996/eeprom.c
@@ -316,26 +316,39 @@ out:
 	return ret;
 }
 
-static int mt7996_eeprom_parse_efuse_hw_cap(struct mt7996_dev *dev)
+static int mt7996_eeprom_parse_efuse_hw_cap(struct mt7996_phy *phy,
+					    u8 *path, u8 *rx_path, u8 *nss)
 {
 #define MODE_HE_ONLY		BIT(0)
+#define STREAM_MASK		GENMASK(2, 0)
+#define STREAM_OFFSET		1
+#define TX_PATH_OFFSET		10
+#define RX_PATH_OFFSET		19
 #define WTBL_SIZE_GROUP		GENMASK(31, 28)
+#define GET_STREAM_CAP(offs)	({				\
+	typeof(offs) _offs = (offs);				\
+	((cap & (STREAM_MASK << _offs)) >> _offs);		\
+})
+	struct mt7996_dev *dev = phy->dev;
 	u32 cap = 0;
 	int ret;
+	u8 band_offs = phy->mt76->band_idx * hweight8(STREAM_MASK);
 
 	ret = mt7996_mcu_get_chip_config(dev, &cap);
 	if (ret)
 		return ret;
 
-	cap = 0x4b249248;	/* internal hardcode */
+	dev->has_eht = true;
 	if (cap) {
 		dev->has_eht = !(cap & MODE_HE_ONLY);
 		dev->wtbl_size_group = u32_get_bits(cap, WTBL_SIZE_GROUP);
+		*nss = min_t(u8, *nss, GET_STREAM_CAP(STREAM_OFFSET + band_offs));
+		*path = min_t(u8, *path, GET_STREAM_CAP(TX_PATH_OFFSET + band_offs));
+		*rx_path = min_t(u8, *rx_path, GET_STREAM_CAP(RX_PATH_OFFSET + band_offs));
 	}
 
-	if (dev->wtbl_size_group < 2 || dev->wtbl_size_group > 4 ||
-	    is_mt7992(&dev->mt76))
-		dev->wtbl_size_group = 2; /* set default */
+	if (dev->wtbl_size_group < 2 || dev->wtbl_size_group > 4)
+		dev->wtbl_size_group = is_mt7996(&dev->mt76) ? 4 : 2;	/* set default */
 
 	return 0;
 }
@@ -379,13 +392,15 @@ static int mt7996_eeprom_parse_band_config(struct mt7996_phy *phy)
 
 int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
 {
+	struct mt76_phy *mphy = phy->mt76;
 	u8 path, rx_path, nss, band_idx = phy->mt76->band_idx;
 	u8 *eeprom = dev->mt76.eeprom.data;
-	struct mt76_phy *mphy = phy->mt76;
-	int max_path = 5, max_nss = 4;
-	int ret;
+	int ret, max_path = 5, max_nss = 4;
 
 	mt7996_parse_eeprom_stream(eeprom, band_idx, &path, &rx_path, &nss);
+	ret = mt7996_eeprom_parse_efuse_hw_cap(phy, &path, &rx_path, &nss);
+	if (ret)
+		return ret;
 
 	if (!path || path > max_path)
 		path = max_path;
@@ -405,10 +420,6 @@ int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
 		dev->chainshift[band_idx + 1] = dev->chainshift[band_idx] +
 						hweight16(mphy->chainmask);
 
-	ret = mt7996_eeprom_parse_efuse_hw_cap(dev);
-	if (ret)
-		return ret;
-
 	return mt7996_eeprom_parse_band_config(phy);
 }
 
-- 
2.18.0