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// SPDX-License-Identifier: ISC
/*
* Copyright (C) 2022 MediaTek Inc.
*/
#include <linux/firmware.h>
#include "mt7996.h"
#include "eeprom.h"
static int mt7996_check_eeprom(struct mt7996_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
u16 val = get_unaligned_le16(eeprom);
switch (val) {
case 0x7990:
return 0;
default:
return -EINVAL;
}
}
static char *mt7996_eeprom_name(struct mt7996_dev *dev)
{
/* reserve for future variants */
return MT7996_EEPROM_DEFAULT;
}
static int
mt7996_eeprom_load_default(struct mt7996_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
const struct firmware *fw = NULL;
int ret;
ret = request_firmware(&fw, mt7996_eeprom_name(dev), dev->mt76.dev);
if (ret)
return ret;
if (!fw || !fw->data) {
dev_err(dev->mt76.dev, "Invalid default bin\n");
ret = -EINVAL;
goto out;
}
memcpy(eeprom, fw->data, MT7996_EEPROM_SIZE);
dev->flash_mode = true;
out:
release_firmware(fw);
return ret;
}
static int mt7996_eeprom_load(struct mt7996_dev *dev)
{
int ret;
ret = mt76_eeprom_init(&dev->mt76, MT7996_EEPROM_SIZE);
if (ret < 0)
return ret;
if (ret) {
dev->flash_mode = true;
} else {
u8 free_block_num;
u32 block_num, i;
u32 eeprom_blk_size = MT7996_EEPROM_BLOCK_SIZE;
ret = mt7996_mcu_get_eeprom_free_block(dev, &free_block_num);
if (ret < 0)
return ret;
/* efuse info isn't enough */
if (free_block_num >= 59)
return -EINVAL;
/* read eeprom data from efuse */
block_num = DIV_ROUND_UP(MT7996_EEPROM_SIZE, eeprom_blk_size);
for (i = 0; i < block_num; i++) {
ret = mt7996_mcu_get_eeprom(dev, i * eeprom_blk_size);
if (ret < 0)
return ret;
}
}
return mt7996_check_eeprom(dev);
}
static int mt7996_eeprom_parse_efuse_hw_cap(struct mt7996_dev *dev)
{
#define MODE_HE_ONLY BIT(0)
#define WTBL_SIZE_GROUP GENMASK(31, 28)
u32 cap = 0;
int ret;
ret = mt7996_mcu_get_chip_config(dev, &cap);
if (ret)
return ret;
if (cap) {
dev->has_eht = !(cap & MODE_HE_ONLY);
dev->wtbl_size_group = u32_get_bits(cap, WTBL_SIZE_GROUP);
}
if (dev->wtbl_size_group < 2 || dev->wtbl_size_group > 4)
dev->wtbl_size_group = 2; /* set default */
return 0;
}
static int mt7996_eeprom_parse_band_config(struct mt7996_phy *phy)
{
u8 *eeprom = phy->dev->mt76.eeprom.data;
u32 val = eeprom[MT_EE_WIFI_CONF];
int ret = 0;
switch (phy->mt76->band_idx) {
case MT_BAND1:
val = FIELD_GET(MT_EE_WIFI_CONF1_BAND_SEL, val);
break;
case MT_BAND2:
val = eeprom[MT_EE_WIFI_CONF + 1];
val = FIELD_GET(MT_EE_WIFI_CONF2_BAND_SEL, val);
break;
default:
val = FIELD_GET(MT_EE_WIFI_CONF0_BAND_SEL, val);
break;
}
switch (val) {
case MT_EE_BAND_SEL_2GHZ:
phy->mt76->cap.has_2ghz = true;
break;
case MT_EE_BAND_SEL_5GHZ:
phy->mt76->cap.has_5ghz = true;
break;
case MT_EE_BAND_SEL_6GHZ:
phy->mt76->cap.has_6ghz = true;
break;
default:
ret = -EINVAL;
break;
}
return ret;
}
int mt7996_eeprom_parse_hw_cap(struct mt7996_dev *dev, struct mt7996_phy *phy)
{
u8 path, nss, band_idx = phy->mt76->band_idx;
u8 *eeprom = dev->mt76.eeprom.data;
struct mt76_phy *mphy = phy->mt76;
int ret;
switch (band_idx) {
case MT_BAND1:
path = FIELD_GET(MT_EE_WIFI_CONF2_TX_PATH_BAND1,
eeprom[MT_EE_WIFI_CONF + 2]);
nss = FIELD_GET(MT_EE_WIFI_CONF5_STREAM_NUM_BAND1,
eeprom[MT_EE_WIFI_CONF + 5]);
break;
case MT_BAND2:
path = FIELD_GET(MT_EE_WIFI_CONF2_TX_PATH_BAND2,
eeprom[MT_EE_WIFI_CONF + 2]);
nss = FIELD_GET(MT_EE_WIFI_CONF5_STREAM_NUM_BAND2,
eeprom[MT_EE_WIFI_CONF + 5]);
break;
default:
path = FIELD_GET(MT_EE_WIFI_CONF1_TX_PATH_BAND0,
eeprom[MT_EE_WIFI_CONF + 1]);
nss = FIELD_GET(MT_EE_WIFI_CONF4_STREAM_NUM_BAND0,
eeprom[MT_EE_WIFI_CONF + 4]);
break;
}
if (!path || path > 4)
path = 4;
nss = min_t(u8, min_t(u8, 4, nss), path);
mphy->antenna_mask = BIT(nss) - 1;
mphy->chainmask = (BIT(path) - 1) << dev->chainshift[band_idx];
dev->chainmask |= mphy->chainmask;
if (band_idx < MT_BAND2)
dev->chainshift[band_idx + 1] = dev->chainshift[band_idx] +
hweight16(mphy->chainmask);
ret = mt7996_eeprom_parse_efuse_hw_cap(dev);
if (ret)
return ret;
return mt7996_eeprom_parse_band_config(phy);
}
int mt7996_eeprom_init(struct mt7996_dev *dev)
{
int ret;
ret = mt7996_eeprom_load(dev);
if (ret < 0) {
if (ret != -EINVAL)
return ret;
dev_warn(dev->mt76.dev, "eeprom load fail, use default bin\n");
ret = mt7996_eeprom_load_default(dev);
if (ret)
return ret;
}
ret = mt7996_eeprom_parse_hw_cap(dev, &dev->phy);
if (ret < 0)
return ret;
memcpy(dev->mphy.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR, ETH_ALEN);
mt76_eeprom_override(&dev->mphy);
return 0;
}
int mt7996_eeprom_get_target_power(struct mt7996_dev *dev,
struct ieee80211_channel *chan)
{
u8 *eeprom = dev->mt76.eeprom.data;
int target_power;
if (chan->band == NL80211_BAND_5GHZ)
target_power = eeprom[MT_EE_TX0_POWER_5G +
mt7996_get_channel_group_5g(chan->hw_value)];
else if (chan->band == NL80211_BAND_6GHZ)
target_power = eeprom[MT_EE_TX0_POWER_6G +
mt7996_get_channel_group_6g(chan->hw_value)];
else
target_power = eeprom[MT_EE_TX0_POWER_2G];
return target_power;
}
s8 mt7996_eeprom_get_power_delta(struct mt7996_dev *dev, int band)
{
u8 *eeprom = dev->mt76.eeprom.data;
u32 val;
s8 delta;
if (band == NL80211_BAND_5GHZ)
val = eeprom[MT_EE_RATE_DELTA_5G];
else if (band == NL80211_BAND_6GHZ)
val = eeprom[MT_EE_RATE_DELTA_6G];
else
val = eeprom[MT_EE_RATE_DELTA_2G];
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;
}
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