// SPDX-License-Identifier: ISC /* Copyright (C) 2019 MediaTek Inc. * * Author: Ryder Lee * Felix Fietkau */ #include #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: case 0x7663: 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->mphy.cap.has_2ghz = true; dev->mphy.cap.has_5ghz = true; return; } if (is_mt7622(&dev->mt76)) { /* 2GHz only */ dev->mphy.cap.has_2ghz = true; return; } if (is_mt7611(&dev->mt76)) { /* 5GHz only */ dev->mphy.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->mphy.cap.has_5ghz = true; break; case MT_EE_DBDC: dev->dbdc_support = true; fallthrough; case MT_EE_2GHZ: dev->mphy.cap.has_2ghz = true; break; default: dev->mphy.cap.has_2ghz = true; dev->mphy.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);