diff mbox series

[1/6] wifi: mt76: mt7925: load the appropriate CLC data based on hardware type

Message ID 20250226075123.3981253-1-mingyen.hsieh@mediatek.com (mailing list archive)
State New
Headers show
Series [1/6] wifi: mt76: mt7925: load the appropriate CLC data based on hardware type | expand

Commit Message

Mingyen Hsieh Feb. 26, 2025, 7:51 a.m. UTC 
From: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>

Read the EEPROM to determine the hardware type and uses this to load the
correct CLC data.

Signed-off-by: Ming Yen Hsieh <mingyen.hsieh@mediatek.com>
---
 .../net/wireless/mediatek/mt76/mt7925/mcu.c   | 61 ++++++++++++++++++-
 .../wireless/mediatek/mt76/mt7925/mt7925.h    |  3 +
 2 files changed, 63 insertions(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
index d4fac7c2d0e6..505a6467f147 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mcu.c
@@ -800,6 +800,54 @@  int mt7925_mcu_uni_rx_ba(struct mt792x_dev *dev,
 				 enable, false);
 }
 
+static int mt7925_mcu_read_eeprom(struct mt792x_dev *dev, u32 offset, u8 *val)
+{
+	struct {
+		u8 rsv[4];
+
+		__le16 tag;
+		__le16 len;
+
+		__le32 addr;
+		__le32 valid;
+		u8 data[MT7925_EEPROM_BLOCK_SIZE];
+	} __packed req = {
+		.tag = cpu_to_le16(1),
+		.len = cpu_to_le16(sizeof(req) - 4),
+		.addr = cpu_to_le32(round_down(offset,
+				    MT7925_EEPROM_BLOCK_SIZE)),
+	};
+	struct evt {
+		u8 rsv[4];
+
+		__le16 tag;
+		__le16 len;
+
+		__le32 ver;
+		__le32 addr;
+		__le32 valid;
+		__le32 size;
+		__le32 magic_num;
+		__le32 type;
+		__le32 rsv1[4];
+		u8 data[32];
+	} __packed * res;
+	struct sk_buff *skb;
+	int ret;
+
+	ret = mt76_mcu_send_and_get_msg(&dev->mt76, MCU_WM_UNI_CMD_QUERY(EFUSE_CTRL),
+					&req, sizeof(req), true, &skb);
+	if (ret)
+		return ret;
+
+	res = (struct evt *)skb->data;
+	*val = res->data[offset % MT7925_EEPROM_BLOCK_SIZE];
+
+	dev_kfree_skb(skb);
+
+	return 0;
+}
+
 static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name)
 {
 	const struct mt76_connac2_fw_trailer *hdr;
@@ -809,12 +857,19 @@  static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name)
 	struct mt792x_phy *phy = &dev->phy;
 	const struct firmware *fw;
 	int ret, i, len, offset = 0;
-	u8 *clc_base = NULL;
+	u8 *clc_base = NULL, hw_encap = 0;
 
 	if (mt7925_disable_clc ||
 	    mt76_is_usb(&dev->mt76))
 		return 0;
 
+	if (mt76_is_mmio(&dev->mt76)) {
+		ret = mt7925_mcu_read_eeprom(dev, MT_EE_HW_TYPE, &hw_encap);
+		if (ret)
+			return ret;
+		hw_encap = u8_get_bits(hw_encap, MT_EE_HW_TYPE_ENCAP);
+	}
+
 	ret = request_firmware(&fw, fw_name, mdev->dev);
 	if (ret)
 		return ret;
@@ -859,6 +914,10 @@  static int mt7925_load_clc(struct mt792x_dev *dev, const char *fw_name)
 		if (phy->clc[clc->idx])
 			continue;
 
+		/* header content sanity */
+		if (u8_get_bits(clc->type, MT_EE_HW_TYPE_ENCAP) != hw_encap)
+			continue;
+
 		phy->clc[clc->idx] = devm_kmemdup(mdev->dev, clc,
 						  le32_to_cpu(clc->len),
 						  GFP_KERNEL);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
index 3f7187309513..abecaf897159 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7925/mt7925.h
@@ -167,9 +167,12 @@  enum mt7925_eeprom_field {
 	MT_EE_CHIP_ID =		0x000,
 	MT_EE_VERSION =		0x002,
 	MT_EE_MAC_ADDR =	0x004,
+	MT_EE_HW_TYPE =		0xa71,
 	__MT_EE_MAX =		0x9ff
 };
 
+#define MT_EE_HW_TYPE_ENCAP     GENMASK(1, 0)
+
 enum {
 	TXPWR_USER,
 	TXPWR_EEPROM,