99 lines
2.1 KiB
C
99 lines
2.1 KiB
C
// SPDX-License-Identifier: ISC
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/* Copyright (C) 2019 MediaTek Inc.
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*
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* Author: Ryder Lee <ryder.lee@mediatek.com>
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* Felix Fietkau <nbd@nbd.name>
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*/
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#include "mt7615.h"
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#include "eeprom.h"
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static int mt7615_efuse_read(struct mt7615_dev *dev, u32 base,
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u16 addr, u8 *data)
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{
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u32 val;
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int i;
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val = mt76_rr(dev, base + MT_EFUSE_CTRL);
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val &= ~(MT_EFUSE_CTRL_AIN | MT_EFUSE_CTRL_MODE);
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val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
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val |= MT_EFUSE_CTRL_KICK;
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mt76_wr(dev, base + MT_EFUSE_CTRL, val);
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if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
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return -ETIMEDOUT;
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udelay(2);
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val = mt76_rr(dev, base + MT_EFUSE_CTRL);
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if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT ||
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WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) {
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memset(data, 0x0, 16);
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return 0;
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}
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for (i = 0; i < 4; i++) {
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val = mt76_rr(dev, base + MT_EFUSE_RDATA(i));
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put_unaligned_le32(val, data + 4 * i);
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}
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return 0;
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}
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static int mt7615_efuse_init(struct mt7615_dev *dev)
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{
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u32 base = mt7615_reg_map(dev, MT_EFUSE_BASE);
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int len = MT7615_EEPROM_SIZE;
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int ret, i;
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void *buf;
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if (mt76_rr(dev, base + MT_EFUSE_BASE_CTRL) & MT_EFUSE_BASE_CTRL_EMPTY)
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return -EINVAL;
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dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL);
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dev->mt76.otp.size = len;
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if (!dev->mt76.otp.data)
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return -ENOMEM;
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buf = dev->mt76.otp.data;
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for (i = 0; i + 16 <= len; i += 16) {
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ret = mt7615_efuse_read(dev, base, i, buf + i);
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if (ret)
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return ret;
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}
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return 0;
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}
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static int mt7615_eeprom_load(struct mt7615_dev *dev)
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{
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int ret;
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ret = mt76_eeprom_init(&dev->mt76, MT7615_EEPROM_SIZE);
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if (ret < 0)
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return ret;
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return mt7615_efuse_init(dev);
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}
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int mt7615_eeprom_init(struct mt7615_dev *dev)
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{
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int ret;
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ret = mt7615_eeprom_load(dev);
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if (ret < 0)
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return ret;
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memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data, MT7615_EEPROM_SIZE);
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dev->mt76.cap.has_2ghz = true;
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dev->mt76.cap.has_5ghz = true;
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memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
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ETH_ALEN);
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mt76_eeprom_override(&dev->mt76);
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return 0;
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}
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