| // SPDX-License-Identifier: ISC |
| /* Copyright (C) 2020 MediaTek Inc. */ |
| |
| #include "mt7915.h" |
| #include "eeprom.h" |
| |
| static inline bool mt7915_efuse_valid(u8 val) |
| { |
| return !(val == 0xff); |
| } |
| |
| u32 mt7915_eeprom_read(struct mt7915_dev *dev, u32 offset) |
| { |
| u8 *data = dev->mt76.eeprom.data; |
| |
| if (!mt7915_efuse_valid(data[offset])) |
| mt7915_mcu_get_eeprom(dev, offset); |
| |
| return data[offset]; |
| } |
| |
| static int mt7915_eeprom_load(struct mt7915_dev *dev) |
| { |
| int ret; |
| |
| ret = mt76_eeprom_init(&dev->mt76, MT7915_EEPROM_SIZE); |
| if (ret < 0) |
| return ret; |
| |
| memset(dev->mt76.eeprom.data, -1, MT7915_EEPROM_SIZE); |
| |
| return 0; |
| } |
| |
| static int mt7915_check_eeprom(struct mt7915_dev *dev) |
| { |
| u16 val; |
| u8 *eeprom = dev->mt76.eeprom.data; |
| |
| mt7915_eeprom_read(dev, 0); |
| val = get_unaligned_le16(eeprom); |
| |
| switch (val) { |
| case 0x7915: |
| return 0; |
| default: |
| return -EINVAL; |
| } |
| } |
| |
| static void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev) |
| { |
| u8 *eeprom = dev->mt76.eeprom.data; |
| u8 tx_mask, max_nss = 4; |
| u32 val = mt7915_eeprom_read(dev, MT_EE_WIFI_CONF); |
| |
| val = FIELD_GET(MT_EE_WIFI_CONF_BAND_SEL, val); |
| 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; |
| } |
| |
| /* read tx mask from eeprom */ |
| tx_mask = FIELD_GET(MT_EE_WIFI_CONF_TX_MASK, |
| eeprom[MT_EE_WIFI_CONF]); |
| 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; |
| } |
| |
| int mt7915_eeprom_init(struct mt7915_dev *dev) |
| { |
| int ret; |
| |
| ret = mt7915_eeprom_load(dev); |
| if (ret < 0) |
| return ret; |
| |
| ret = mt7915_check_eeprom(dev); |
| if (ret) |
| return ret; |
| |
| mt7915_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; |
| } |
| |
| int mt7915_eeprom_get_target_power(struct mt7915_dev *dev, |
| struct ieee80211_channel *chan, |
| u8 chain_idx) |
| { |
| int index; |
| bool tssi_on; |
| |
| if (chain_idx > 3) |
| return -EINVAL; |
| |
| tssi_on = mt7915_tssi_enabled(dev, chan->band); |
| |
| if (chan->band == NL80211_BAND_2GHZ) { |
| index = MT_EE_TX0_POWER_2G + chain_idx * 3 + !tssi_on; |
| } else { |
| int group = tssi_on ? |
| mt7915_get_channel_group(chan->hw_value) : 8; |
| |
| index = MT_EE_TX0_POWER_5G + chain_idx * 12 + group; |
| } |
| |
| return mt7915_eeprom_read(dev, index); |
| } |
| |
| static const u8 sku_cck_delta_map[] = { |
| SKU_CCK_GROUP0, |
| SKU_CCK_GROUP0, |
| SKU_CCK_GROUP1, |
| SKU_CCK_GROUP1, |
| }; |
| |
| static const u8 sku_ofdm_delta_map[] = { |
| SKU_OFDM_GROUP0, |
| SKU_OFDM_GROUP0, |
| SKU_OFDM_GROUP1, |
| SKU_OFDM_GROUP1, |
| SKU_OFDM_GROUP2, |
| SKU_OFDM_GROUP2, |
| SKU_OFDM_GROUP3, |
| SKU_OFDM_GROUP4, |
| }; |
| |
| static const u8 sku_mcs_delta_map[] = { |
| SKU_MCS_GROUP0, |
| SKU_MCS_GROUP1, |
| SKU_MCS_GROUP1, |
| SKU_MCS_GROUP2, |
| SKU_MCS_GROUP2, |
| SKU_MCS_GROUP3, |
| SKU_MCS_GROUP4, |
| SKU_MCS_GROUP5, |
| SKU_MCS_GROUP6, |
| SKU_MCS_GROUP7, |
| SKU_MCS_GROUP8, |
| SKU_MCS_GROUP9, |
| }; |
| |
| #define SKU_GROUP(_mode, _len, _ofs_2g, _ofs_5g, _map) \ |
| [_mode] = { \ |
| .len = _len, \ |
| .offset = { \ |
| _ofs_2g, \ |
| _ofs_5g, \ |
| }, \ |
| .delta_map = _map \ |
| } |
| |
| const struct sku_group mt7915_sku_groups[] = { |
| SKU_GROUP(SKU_CCK, 4, 0x252, 0, sku_cck_delta_map), |
| SKU_GROUP(SKU_OFDM, 8, 0x254, 0x29d, sku_ofdm_delta_map), |
| |
| SKU_GROUP(SKU_HT_BW20, 8, 0x259, 0x2a2, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HT_BW40, 9, 0x262, 0x2ab, sku_mcs_delta_map), |
| SKU_GROUP(SKU_VHT_BW20, 12, 0x259, 0x2a2, sku_mcs_delta_map), |
| SKU_GROUP(SKU_VHT_BW40, 12, 0x262, 0x2ab, sku_mcs_delta_map), |
| SKU_GROUP(SKU_VHT_BW80, 12, 0, 0x2b4, sku_mcs_delta_map), |
| SKU_GROUP(SKU_VHT_BW160, 12, 0, 0, sku_mcs_delta_map), |
| |
| SKU_GROUP(SKU_HE_RU26, 12, 0x27f, 0x2dd, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HE_RU52, 12, 0x289, 0x2e7, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HE_RU106, 12, 0x293, 0x2f1, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HE_RU242, 12, 0x26b, 0x2bf, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HE_RU484, 12, 0x275, 0x2c9, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HE_RU996, 12, 0, 0x2d3, sku_mcs_delta_map), |
| SKU_GROUP(SKU_HE_RU2x996, 12, 0, 0, sku_mcs_delta_map), |
| }; |
| |
| static s8 |
| mt7915_get_sku_delta(struct mt7915_dev *dev, u32 addr) |
| { |
| u32 val = mt7915_eeprom_read(dev, addr); |
| s8 delta = FIELD_GET(SKU_DELTA_VAL, val); |
| |
| if (!(val & SKU_DELTA_EN)) |
| return 0; |
| |
| return val & SKU_DELTA_ADD ? delta : -delta; |
| } |
| |
| static void |
| mt7915_eeprom_init_sku_band(struct mt7915_dev *dev, |
| struct ieee80211_supported_band *sband) |
| { |
| int i, band = sband->band; |
| s8 *rate_power = dev->rate_power[band], max_delta = 0; |
| u8 idx = 0; |
| |
| for (i = 0; i < ARRAY_SIZE(mt7915_sku_groups); i++) { |
| const struct sku_group *sku = &mt7915_sku_groups[i]; |
| u32 offset = sku->offset[band]; |
| int j; |
| |
| if (!offset) { |
| idx += sku->len; |
| continue; |
| } |
| |
| rate_power[idx++] = mt7915_get_sku_delta(dev, offset); |
| if (rate_power[idx - 1] > max_delta) |
| max_delta = rate_power[idx - 1]; |
| |
| if (i == SKU_HT_BW20 || i == SKU_VHT_BW20) |
| offset += 1; |
| |
| for (j = 1; j < sku->len; j++) { |
| u32 addr = offset + sku->delta_map[j]; |
| |
| rate_power[idx++] = mt7915_get_sku_delta(dev, addr); |
| if (rate_power[idx - 1] > max_delta) |
| max_delta = rate_power[idx - 1]; |
| } |
| } |
| |
| rate_power[idx] = max_delta; |
| } |
| |
| void mt7915_eeprom_init_sku(struct mt7915_dev *dev) |
| { |
| mt7915_eeprom_init_sku_band(dev, &dev->mphy.sband_2g.sband); |
| mt7915_eeprom_init_sku_band(dev, &dev->mphy.sband_5g.sband); |
| } |