1 files changed, 65 insertions, 18 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
index ee3d64434821..edd74d0de157 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/eeprom.c
@@ -1,6 +1,7 @@
 // SPDX-License-Identifier: ISC
 /* Copyright (C) 2020 MediaTek Inc. */
 
+#include <linux/firmware.h>
 #include "mt7915.h"
 #include "eeprom.h"
 
@@ -10,6 +11,9 @@ static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
 	u8 *eeprom = mdev->eeprom.data;
 	u32 val = eeprom[MT_EE_DO_PRE_CAL];
 
+	if (!dev->flash_mode)
+		return 0;
+
 	if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP))
 		return 0;
 
@@ -21,6 +25,49 @@ static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
 	return mt76_get_of_eeprom(mdev, dev->cal, MT_EE_PRECAL, val);
 }
 
+static int mt7915_check_eeprom(struct mt7915_dev *dev)
+{
+	u8 *eeprom = dev->mt76.eeprom.data;
+	u16 val = get_unaligned_le16(eeprom);
+
+	switch (val) {
+	case 0x7915:
+		return 0;
+	default:
+		return -EINVAL;
+	}
+}
+
+static int
+mt7915_eeprom_load_default(struct mt7915_dev *dev)
+{
+	char *default_bin = MT7915_EEPROM_DEFAULT;
+	u8 *eeprom = dev->mt76.eeprom.data;
+	const struct firmware *fw = NULL;
+	int ret;
+
+	if (dev->dbdc_support)
+		default_bin = MT7915_EEPROM_DEFAULT_DBDC;
+
+	ret = request_firmware(&fw, default_bin, dev->mt76.dev);
+	if (ret)
+		return ret;
+
+	if (!fw || !fw->data) {
+		dev_err(dev->mt76.dev, "Invalid default bin\n");
+		ret = -EINVAL;
+		goto out;
+	}
+
+	memcpy(eeprom, fw->data, MT7915_EEPROM_SIZE);
+	dev->flash_mode = true;
+
+out:
+	release_firmware(fw);
+
+	return ret;
+}
+
 static int mt7915_eeprom_load(struct mt7915_dev *dev)
 {
 	int ret;
@@ -31,10 +78,16 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev)
 
 	if (ret) {
 		dev->flash_mode = true;
-		ret = mt7915_eeprom_load_precal(dev);
 	} else {
+		u8 free_block_num;
 		u32 block_num, i;
 
+		mt7915_mcu_get_eeprom_free_block(dev, &free_block_num);
+		/* efuse info not enough */
+		if (free_block_num >= 29)
+			return -EINVAL;
+
+		/* read eeprom data from efuse */
 		block_num = DIV_ROUND_UP(MT7915_EEPROM_SIZE,
 					 MT7915_EEPROM_BLOCK_SIZE);
 		for (i = 0; i < block_num; i++)
@@ -42,20 +95,7 @@ static int mt7915_eeprom_load(struct mt7915_dev *dev)
 					      i * MT7915_EEPROM_BLOCK_SIZE);
 	}
 
-	return ret;
-}
-
-static int mt7915_check_eeprom(struct mt7915_dev *dev)
-{
-	u8 *eeprom = dev->mt76.eeprom.data;
-	u16 val = get_unaligned_le16(eeprom);
-
-	switch (val) {
-	case 0x7915:
-		return 0;
-	default:
-		return -EINVAL;
-	}
+	return mt7915_check_eeprom(dev);
 }
 
 void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)
@@ -117,10 +157,17 @@ int mt7915_eeprom_init(struct mt7915_dev *dev)
 	int ret;
 
 	ret = mt7915_eeprom_load(dev);
-	if (ret < 0)
-		return ret;
+	if (ret < 0) {
+		if (ret != -EINVAL)
+			return ret;
+
+		dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");
+		ret = mt7915_eeprom_load_default(dev);
+		if (ret)
+			return ret;
+	}
 
-	ret = mt7915_check_eeprom(dev);
+	ret = mt7915_eeprom_load_precal(dev);
 	if (ret)
 		return ret;