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// 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);
}
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