| // SPDX-License-Identifier: ISC |
| /* Copyright (C) 2019 MediaTek Inc. |
| * |
| * Author: Ryder Lee <ryder.lee@mediatek.com> |
| * Felix Fietkau <nbd@nbd.name> |
| */ |
| |
| #include <linux/of.h> |
| #include "mt7615.h" |
| #include "eeprom.h" |
| |
| static int mt7615_efuse_read(struct mt7615_dev *dev, u32 base, |
| u16 addr, u8 *data) |
| { |
| u32 val; |
| int i; |
| |
| val = mt76_rr(dev, base + MT_EFUSE_CTRL); |
| val &= ~(MT_EFUSE_CTRL_AIN | MT_EFUSE_CTRL_MODE); |
| val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf); |
| val |= MT_EFUSE_CTRL_KICK; |
| mt76_wr(dev, base + MT_EFUSE_CTRL, val); |
| |
| if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000)) |
| return -ETIMEDOUT; |
| |
| udelay(2); |
| |
| val = mt76_rr(dev, base + MT_EFUSE_CTRL); |
| if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT || |
| WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) { |
| memset(data, 0x0, 16); |
| return 0; |
| } |
| |
| for (i = 0; i < 4; i++) { |
| val = mt76_rr(dev, base + MT_EFUSE_RDATA(i)); |
| put_unaligned_le32(val, data + 4 * i); |
| } |
| |
| return 0; |
| } |
| |
| static int mt7615_efuse_init(struct mt7615_dev *dev, u32 base) |
| { |
| int i, len = MT7615_EEPROM_SIZE; |
| void *buf; |
| u32 val; |
| |
| val = mt76_rr(dev, base + MT_EFUSE_BASE_CTRL); |
| if (val & MT_EFUSE_BASE_CTRL_EMPTY) |
| return 0; |
| |
| dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL); |
| dev->mt76.otp.size = len; |
| if (!dev->mt76.otp.data) |
| return -ENOMEM; |
| |
| buf = dev->mt76.otp.data; |
| for (i = 0; i + 16 <= len; i += 16) { |
| int ret; |
| |
| ret = mt7615_efuse_read(dev, base, i, buf + i); |
| if (ret) |
| return ret; |
| } |
| |
| return 0; |
| } |
| |
| static int mt7615_eeprom_load(struct mt7615_dev *dev, u32 addr) |
| { |
| int ret; |
| |
| ret = mt76_eeprom_init(&dev->mt76, MT7615_EEPROM_FULL_SIZE); |
| if (ret < 0) |
| return ret; |
| |
| return mt7615_efuse_init(dev, addr); |
| } |
| |
| static int mt7615_check_eeprom(struct mt76_dev *dev) |
| { |
| u16 val = get_unaligned_le16(dev->eeprom.data); |
| |
| switch (val) { |
| case 0x7615: |
| case 0x7622: |
| return 0; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static void |
| mt7615_eeprom_parse_hw_band_cap(struct mt7615_dev *dev) |
| { |
| u8 val, *eeprom = dev->mt76.eeprom.data; |
| |
| if (is_mt7663(&dev->mt76)) { |
| /* dual band */ |
| dev->mt76.cap.has_2ghz = true; |
| dev->mt76.cap.has_5ghz = true; |
| return; |
| } |
| |
| if (is_mt7622(&dev->mt76)) { |
| /* 2GHz only */ |
| dev->mt76.cap.has_2ghz = true; |
| return; |
| } |
| |
| if (is_mt7611(&dev->mt76)) { |
| /* 5GHz only */ |
| dev->mt76.cap.has_5ghz = true; |
| return; |
| } |
| |
| val = FIELD_GET(MT_EE_NIC_WIFI_CONF_BAND_SEL, |
| eeprom[MT_EE_WIFI_CONF]); |
| switch (val) { |
| case MT_EE_5GHZ: |
| dev->mt76.cap.has_5ghz = true; |
| break; |
| case MT_EE_2GHZ: |
| dev->mt76.cap.has_2ghz = true; |
| break; |
| default: |
| dev->mt76.cap.has_2ghz = true; |
| dev->mt76.cap.has_5ghz = true; |
| break; |
| } |
| } |
| |
| static void mt7615_eeprom_parse_hw_cap(struct mt7615_dev *dev) |
| { |
| u8 *eeprom = dev->mt76.eeprom.data; |
| u8 tx_mask, max_nss; |
| |
| mt7615_eeprom_parse_hw_band_cap(dev); |
| |
| if (is_mt7663(&dev->mt76)) { |
| max_nss = 2; |
| tx_mask = FIELD_GET(MT_EE_HW_CONF1_TX_MASK, |
| eeprom[MT7663_EE_HW_CONF1]); |
| } else { |
| u32 val; |
| |
| /* read tx-rx mask from eeprom */ |
| val = mt76_rr(dev, MT_TOP_STRAP_STA); |
| max_nss = val & MT_TOP_3NSS ? 3 : 4; |
| |
| tx_mask = FIELD_GET(MT_EE_NIC_CONF_TX_MASK, |
| eeprom[MT_EE_NIC_CONF_0]); |
| } |
| if (!tx_mask || tx_mask > max_nss) |
| tx_mask = max_nss; |
| |
| dev->chainmask = BIT(tx_mask) - 1; |
| dev->mphy.antenna_mask = dev->chainmask; |
| dev->phy.chainmask = dev->chainmask; |
| } |
| |
| static int mt7663_eeprom_get_target_power_index(struct mt7615_dev *dev, |
| struct ieee80211_channel *chan, |
| u8 chain_idx) |
| { |
| int index, group; |
| |
| if (chain_idx > 1) |
| return -EINVAL; |
| |
| if (chan->band == NL80211_BAND_2GHZ) |
| return MT7663_EE_TX0_2G_TARGET_POWER + (chain_idx << 4); |
| |
| group = mt7615_get_channel_group(chan->hw_value); |
| if (chain_idx == 1) |
| index = MT7663_EE_TX1_5G_G0_TARGET_POWER; |
| else |
| index = MT7663_EE_TX0_5G_G0_TARGET_POWER; |
| |
| return index + group * 3; |
| } |
| |
| int mt7615_eeprom_get_target_power_index(struct mt7615_dev *dev, |
| struct ieee80211_channel *chan, |
| u8 chain_idx) |
| { |
| int index; |
| |
| if (is_mt7663(&dev->mt76)) |
| return mt7663_eeprom_get_target_power_index(dev, chan, |
| chain_idx); |
| |
| if (chain_idx > 3) |
| return -EINVAL; |
| |
| /* TSSI disabled */ |
| if (mt7615_ext_pa_enabled(dev, chan->band)) { |
| if (chan->band == NL80211_BAND_2GHZ) |
| return MT_EE_EXT_PA_2G_TARGET_POWER; |
| else |
| return MT_EE_EXT_PA_5G_TARGET_POWER; |
| } |
| |
| /* TSSI enabled */ |
| if (chan->band == NL80211_BAND_2GHZ) { |
| index = MT_EE_TX0_2G_TARGET_POWER + chain_idx * 6; |
| } else { |
| int group = mt7615_get_channel_group(chan->hw_value); |
| |
| switch (chain_idx) { |
| case 1: |
| index = MT_EE_TX1_5G_G0_TARGET_POWER; |
| break; |
| case 2: |
| index = MT_EE_TX2_5G_G0_TARGET_POWER; |
| break; |
| case 3: |
| index = MT_EE_TX3_5G_G0_TARGET_POWER; |
| break; |
| case 0: |
| default: |
| index = MT_EE_TX0_5G_G0_TARGET_POWER; |
| break; |
| } |
| index += 5 * group; |
| } |
| |
| return index; |
| } |
| |
| int mt7615_eeprom_get_power_delta_index(struct mt7615_dev *dev, |
| enum nl80211_band band) |
| { |
| /* assume the first rate has the highest power offset */ |
| if (is_mt7663(&dev->mt76)) { |
| if (band == NL80211_BAND_2GHZ) |
| return MT_EE_TX0_5G_G0_TARGET_POWER; |
| else |
| return MT7663_EE_5G_RATE_POWER; |
| } |
| |
| if (band == NL80211_BAND_2GHZ) |
| return MT_EE_2G_RATE_POWER; |
| else |
| return MT_EE_5G_RATE_POWER; |
| } |
| |
| static void mt7615_apply_cal_free_data(struct mt7615_dev *dev) |
| { |
| static const u16 ical[] = { |
| 0x53, 0x54, 0x55, 0x56, 0x57, 0x5c, 0x5d, 0x62, 0x63, 0x68, |
| 0x69, 0x6e, 0x6f, 0x73, 0x74, 0x78, 0x79, 0x82, 0x83, 0x87, |
| 0x88, 0x8c, 0x8d, 0x91, 0x92, 0x96, 0x97, 0x9b, 0x9c, 0xa0, |
| 0xa1, 0xaa, 0xab, 0xaf, 0xb0, 0xb4, 0xb5, 0xb9, 0xba, 0xf4, |
| 0xf7, 0xff, |
| 0x140, 0x141, 0x145, 0x146, 0x14a, 0x14b, 0x154, 0x155, 0x159, |
| 0x15a, 0x15e, 0x15f, 0x163, 0x164, 0x168, 0x169, 0x16d, 0x16e, |
| 0x172, 0x173, 0x17c, 0x17d, 0x181, 0x182, 0x186, 0x187, 0x18b, |
| 0x18c |
| }; |
| static const u16 ical_nocheck[] = { |
| 0x110, 0x111, 0x112, 0x113, 0x114, 0x115, 0x116, 0x117, 0x118, |
| 0x1b5, 0x1b6, 0x1b7, 0x3ac, 0x3ad, 0x3ae, 0x3af, 0x3b0, 0x3b1, |
| 0x3b2 |
| }; |
| u8 *eeprom = dev->mt76.eeprom.data; |
| u8 *otp = dev->mt76.otp.data; |
| int i; |
| |
| if (!otp) |
| return; |
| |
| for (i = 0; i < ARRAY_SIZE(ical); i++) |
| if (!otp[ical[i]]) |
| return; |
| |
| for (i = 0; i < ARRAY_SIZE(ical); i++) |
| eeprom[ical[i]] = otp[ical[i]]; |
| |
| for (i = 0; i < ARRAY_SIZE(ical_nocheck); i++) |
| eeprom[ical_nocheck[i]] = otp[ical_nocheck[i]]; |
| } |
| |
| static void mt7622_apply_cal_free_data(struct mt7615_dev *dev) |
| { |
| static const u16 ical[] = { |
| 0x53, 0x54, 0x55, 0x56, 0xf4, 0xf7, 0x144, 0x156, 0x15b |
| }; |
| u8 *eeprom = dev->mt76.eeprom.data; |
| u8 *otp = dev->mt76.otp.data; |
| int i; |
| |
| if (!otp) |
| return; |
| |
| for (i = 0; i < ARRAY_SIZE(ical); i++) { |
| if (!otp[ical[i]]) |
| continue; |
| |
| eeprom[ical[i]] = otp[ical[i]]; |
| } |
| } |
| |
| static void mt7615_cal_free_data(struct mt7615_dev *dev) |
| { |
| struct device_node *np = dev->mt76.dev->of_node; |
| |
| if (!np || !of_property_read_bool(np, "mediatek,eeprom-merge-otp")) |
| return; |
| |
| switch (mt76_chip(&dev->mt76)) { |
| case 0x7622: |
| mt7622_apply_cal_free_data(dev); |
| break; |
| case 0x7615: |
| case 0x7611: |
| mt7615_apply_cal_free_data(dev); |
| break; |
| } |
| } |
| |
| int mt7615_eeprom_init(struct mt7615_dev *dev, u32 addr) |
| { |
| int ret; |
| |
| ret = mt7615_eeprom_load(dev, addr); |
| if (ret < 0) |
| return ret; |
| |
| ret = mt7615_check_eeprom(&dev->mt76); |
| if (ret && dev->mt76.otp.data) { |
| memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data, |
| MT7615_EEPROM_SIZE); |
| } else { |
| dev->flash_eeprom = true; |
| mt7615_cal_free_data(dev); |
| } |
| |
| mt7615_eeprom_parse_hw_cap(dev); |
| memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, |
| ETH_ALEN); |
| |
| mt76_eeprom_override(&dev->mt76); |
| |
| return 0; |
| } |
| EXPORT_SYMBOL_GPL(mt7615_eeprom_init); |
