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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);
}
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