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// SPDX-License-Identifier: ISC
/* Copyright (C) 2020 MediaTek Inc. */
#include "mt7915.h"
#include "eeprom.h"
static int mt7915_eeprom_load_precal(struct mt7915_dev *dev)
{
struct mt76_dev *mdev = &dev->mt76;
u8 *eeprom = mdev->eeprom.data;
u32 val = eeprom[MT_EE_DO_PRE_CAL];
if (val != (MT_EE_WIFI_CAL_DPD | MT_EE_WIFI_CAL_GROUP))
return 0;
val = MT_EE_CAL_GROUP_SIZE + MT_EE_CAL_DPD_SIZE;
dev->cal = devm_kzalloc(mdev->dev, val, GFP_KERNEL);
if (!dev->cal)
return -ENOMEM;
return mt76_get_of_eeprom(mdev, dev->cal, MT_EE_PRECAL, val);
}
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;
if (ret) {
dev->flash_mode = true;
ret = mt7915_eeprom_load_precal(dev);
} else {
u32 block_num, i;
block_num = DIV_ROUND_UP(MT7915_EEPROM_SIZE,
MT7915_EEPROM_BLOCK_SIZE);
for (i = 0; i < block_num; i++)
mt7915_mcu_get_eeprom(dev,
i * MT7915_EEPROM_BLOCK_SIZE);
}
return ret;
}
static int mt7915_check_eeprom(struct mt7915_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
u16 val = get_unaligned_le16(eeprom);
switch (val) {
case 0x7915:
return 0;
default:
return -EINVAL;
}
}
void mt7915_eeprom_parse_band_config(struct mt7915_phy *phy)
{
struct mt7915_dev *dev = phy->dev;
bool ext_phy = phy != &dev->phy;
u8 *eeprom = dev->mt76.eeprom.data;
u32 val;
val = eeprom[MT_EE_WIFI_CONF + ext_phy];
val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val);
if (val == MT_EE_BAND_SEL_DEFAULT && dev->dbdc_support)
val = ext_phy ? MT_EE_BAND_SEL_5GHZ : MT_EE_BAND_SEL_2GHZ;
switch (val) {
case MT_EE_BAND_SEL_5GHZ:
phy->mt76->cap.has_5ghz = true;
break;
case MT_EE_BAND_SEL_2GHZ:
phy->mt76->cap.has_2ghz = true;
break;
default:
phy->mt76->cap.has_2ghz = true;
phy->mt76->cap.has_5ghz = true;
break;
}
}
static void mt7915_eeprom_parse_hw_cap(struct mt7915_dev *dev)
{
u8 nss, nss_band, *eeprom = dev->mt76.eeprom.data;
mt7915_eeprom_parse_band_config(&dev->phy);
/* read tx mask from eeprom */
nss = FIELD_GET(MT_EE_WIFI_CONF0_TX_PATH, eeprom[MT_EE_WIFI_CONF]);
if (!nss || nss > 4)
nss = 4;
nss_band = nss;
if (dev->dbdc_support) {
nss_band = FIELD_GET(MT_EE_WIFI_CONF3_TX_PATH_B0,
eeprom[MT_EE_WIFI_CONF + 3]);
if (!nss_band || nss_band > 2)
nss_band = 2;
if (nss_band >= nss)
nss = 4;
}
dev->chainmask = BIT(nss) - 1;
dev->mphy.antenna_mask = BIT(nss_band) - 1;
dev->mphy.chainmask = dev->mphy.antenna_mask;
}
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->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
ETH_ALEN);
mt76_eeprom_override(&dev->mphy);
return 0;
}
int mt7915_eeprom_get_target_power(struct mt7915_dev *dev,
struct ieee80211_channel *chan,
u8 chain_idx)
{
u8 *eeprom = dev->mt76.eeprom.data;
int index, target_power;
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;
target_power = eeprom[index];
if (!tssi_on)
target_power += eeprom[index + 1];
} else {
int group = mt7915_get_channel_group(chan->hw_value);
index = MT_EE_TX0_POWER_5G + chain_idx * 12;
target_power = eeprom[index + group];
if (!tssi_on)
target_power += eeprom[index + 8];
}
return target_power;
}
s8 mt7915_eeprom_get_power_delta(struct mt7915_dev *dev, int band)
{
u8 *eeprom = dev->mt76.eeprom.data;
u32 val;
s8 delta;
if (band == NL80211_BAND_2GHZ)
val = eeprom[MT_EE_RATE_DELTA_2G];
else
val = eeprom[MT_EE_RATE_DELTA_5G];
if (!(val & MT_EE_RATE_DELTA_EN))
return 0;
delta = FIELD_GET(MT_EE_RATE_DELTA_MASK, val);
return val & MT_EE_RATE_DELTA_SIGN ? delta : -delta;
}
const u8 mt7915_sku_group_len[] = {
[SKU_CCK] = 4,
[SKU_OFDM] = 8,
[SKU_HT_BW20] = 8,
[SKU_HT_BW40] = 9,
[SKU_VHT_BW20] = 12,
[SKU_VHT_BW40] = 12,
[SKU_VHT_BW80] = 12,
[SKU_VHT_BW160] = 12,
[SKU_HE_RU26] = 12,
[SKU_HE_RU52] = 12,
[SKU_HE_RU106] = 12,
[SKU_HE_RU242] = 12,
[SKU_HE_RU484] = 12,
[SKU_HE_RU996] = 12,
[SKU_HE_RU2x996] = 12
};
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