| // SPDX-License-Identifier: ISC |
| /* Copyright (C) 2020 MediaTek Inc. */ |
| |
| #include "mt7921.h" |
| #include "eeprom.h" |
| |
| static u32 mt7921_eeprom_read(struct mt7921_dev *dev, u32 offset) |
| { |
| u8 *data = dev->mt76.eeprom.data; |
| |
| if (data[offset] == 0xff) |
| mt7921_mcu_get_eeprom(dev, offset); |
| |
| return data[offset]; |
| } |
| |
| static int mt7921_eeprom_load(struct mt7921_dev *dev) |
| { |
| int ret; |
| |
| ret = mt76_eeprom_init(&dev->mt76, MT7921_EEPROM_SIZE); |
| if (ret < 0) |
| return ret; |
| |
| memset(dev->mt76.eeprom.data, -1, MT7921_EEPROM_SIZE); |
| |
| return 0; |
| } |
| |
| static int mt7921_check_eeprom(struct mt7921_dev *dev) |
| { |
| u8 *eeprom = dev->mt76.eeprom.data; |
| u16 val; |
| |
| mt7921_eeprom_read(dev, MT_EE_CHIP_ID); |
| val = get_unaligned_le16(eeprom); |
| |
| switch (val) { |
| case 0x7961: |
| return 0; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| void mt7921_eeprom_parse_band_config(struct mt7921_phy *phy) |
| { |
| struct mt7921_dev *dev = phy->dev; |
| u32 val; |
| |
| val = mt7921_eeprom_read(dev, MT_EE_WIFI_CONF); |
| val = FIELD_GET(MT_EE_WIFI_CONF_BAND_SEL, val); |
| |
| switch (val) { |
| case MT_EE_5GHZ: |
| phy->mt76->cap.has_5ghz = true; |
| break; |
| case MT_EE_2GHZ: |
| phy->mt76->cap.has_2ghz = true; |
| break; |
| default: |
| phy->mt76->cap.has_2ghz = true; |
| phy->mt76->cap.has_5ghz = true; |
| break; |
| } |
| } |
| |
| static void mt7921_eeprom_parse_hw_cap(struct mt7921_dev *dev) |
| { |
| u8 tx_mask; |
| |
| mt7921_eeprom_parse_band_config(&dev->phy); |
| |
| /* TODO: read NSS with MCU_CMD_NIC_CAPV2 */ |
| tx_mask = 2; |
| dev->chainmask = BIT(tx_mask) - 1; |
| dev->mphy.antenna_mask = dev->chainmask; |
| dev->mphy.chainmask = dev->mphy.antenna_mask; |
| } |
| |
| int mt7921_eeprom_init(struct mt7921_dev *dev) |
| { |
| int ret; |
| |
| ret = mt7921_eeprom_load(dev); |
| if (ret < 0) |
| return ret; |
| |
| ret = mt7921_check_eeprom(dev); |
| if (ret) |
| return ret; |
| |
| mt7921_eeprom_parse_hw_cap(dev); |
| memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, |
| ETH_ALEN); |
| |
| mt76_eeprom_override(&dev->mphy); |
| |
| return 0; |
| } |