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// SPDX-License-Identifier: ISC
/* Copyright (C) 2019 MediaTek Inc.
*
* Author: Ryder Lee <ryder.lee@mediatek.com>
* Felix Fietkau <nbd@nbd.name>
*/
#include <linux/of.h>
#include "mt7615.h"
#include "eeprom.h"
static int mt7615_efuse_read(struct mt7615_dev *dev, u32 base,
u16 addr, u8 *data)
{
u32 val;
int i;
val = mt76_rr(dev, base + MT_EFUSE_CTRL);
val &= ~(MT_EFUSE_CTRL_AIN | MT_EFUSE_CTRL_MODE);
val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
val |= MT_EFUSE_CTRL_KICK;
mt76_wr(dev, base + MT_EFUSE_CTRL, val);
if (!mt76_poll(dev, base + MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
return -ETIMEDOUT;
udelay(2);
val = mt76_rr(dev, base + MT_EFUSE_CTRL);
if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT ||
WARN_ON_ONCE(!(val & MT_EFUSE_CTRL_VALID))) {
memset(data, 0x0, 16);
return 0;
}
for (i = 0; i < 4; i++) {
val = mt76_rr(dev, base + MT_EFUSE_RDATA(i));
put_unaligned_le32(val, data + 4 * i);
}
return 0;
}
static int mt7615_efuse_init(struct mt7615_dev *dev, u32 base)
{
int i, len = MT7615_EEPROM_SIZE;
void *buf;
u32 val;
if (is_mt7663(&dev->mt76))
len = MT7663_EEPROM_SIZE;
val = mt76_rr(dev, base + MT_EFUSE_BASE_CTRL);
if (val & MT_EFUSE_BASE_CTRL_EMPTY)
return 0;
dev->mt76.otp.data = devm_kzalloc(dev->mt76.dev, len, GFP_KERNEL);
dev->mt76.otp.size = len;
if (!dev->mt76.otp.data)
return -ENOMEM;
buf = dev->mt76.otp.data;
for (i = 0; i + 16 <= len; i += 16) {
int ret;
ret = mt7615_efuse_read(dev, base, i, buf + i);
if (ret)
return ret;
}
return 0;
}
static int mt7615_eeprom_load(struct mt7615_dev *dev, u32 addr)
{
int ret;
BUILD_BUG_ON(MT7615_EEPROM_FULL_SIZE < MT7663_EEPROM_SIZE);
ret = mt76_eeprom_init(&dev->mt76, MT7615_EEPROM_FULL_SIZE);
if (ret < 0)
return ret;
return mt7615_efuse_init(dev, addr);
}
static int mt7615_check_eeprom(struct mt76_dev *dev)
{
u16 val = get_unaligned_le16(dev->eeprom.data);
switch (val) {
case 0x7615:
case 0x7622:
case 0x7663:
return 0;
default:
return -EINVAL;
}
}
static void
mt7615_eeprom_parse_hw_band_cap(struct mt7615_dev *dev)
{
u8 val, *eeprom = dev->mt76.eeprom.data;
if (is_mt7663(&dev->mt76)) {
/* dual band */
dev->mphy.cap.has_2ghz = true;
dev->mphy.cap.has_5ghz = true;
return;
}
if (is_mt7622(&dev->mt76)) {
/* 2GHz only */
dev->mphy.cap.has_2ghz = true;
return;
}
if (is_mt7611(&dev->mt76)) {
/* 5GHz only */
dev->mphy.cap.has_5ghz = true;
return;
}
val = FIELD_GET(MT_EE_NIC_WIFI_CONF_BAND_SEL,
eeprom[MT_EE_WIFI_CONF]);
switch (val) {
case MT_EE_5GHZ:
dev->mphy.cap.has_5ghz = true;
break;
case MT_EE_2GHZ:
dev->mphy.cap.has_2ghz = true;
break;
case MT_EE_DBDC:
dev->dbdc_support = true;
fallthrough;
default:
dev->mphy.cap.has_2ghz = true;
dev->mphy.cap.has_5ghz = true;
break;
}
}
static void mt7615_eeprom_parse_hw_cap(struct mt7615_dev *dev)
{
u8 *eeprom = dev->mt76.eeprom.data;
u8 tx_mask, max_nss;
mt7615_eeprom_parse_hw_band_cap(dev);
if (is_mt7663(&dev->mt76)) {
max_nss = 2;
tx_mask = FIELD_GET(MT_EE_HW_CONF1_TX_MASK,
eeprom[MT7663_EE_HW_CONF1]);
} else {
u32 val;
/* read tx-rx mask from eeprom */
val = mt76_rr(dev, MT_TOP_STRAP_STA);
max_nss = val & MT_TOP_3NSS ? 3 : 4;
tx_mask = FIELD_GET(MT_EE_NIC_CONF_TX_MASK,
eeprom[MT_EE_NIC_CONF_0]);
}
if (!tx_mask || tx_mask > max_nss)
tx_mask = max_nss;
dev->chainmask = BIT(tx_mask) - 1;
dev->mphy.antenna_mask = dev->chainmask;
dev->mphy.chainmask = dev->chainmask;
}
static int mt7663_eeprom_get_target_power_index(struct mt7615_dev *dev,
struct ieee80211_channel *chan,
u8 chain_idx)
{
int index, group;
if (chain_idx > 1)
return -EINVAL;
if (chan->band == NL80211_BAND_2GHZ)
return MT7663_EE_TX0_2G_TARGET_POWER + (chain_idx << 4);
group = mt7615_get_channel_group(chan->hw_value);
if (chain_idx == 1)
index = MT7663_EE_TX1_5G_G0_TARGET_POWER;
else
index = MT7663_EE_TX0_5G_G0_TARGET_POWER;
return index + group * 3;
}
int mt7615_eeprom_get_target_power_index(struct mt7615_dev *dev,
struct ieee80211_channel *chan,
u8 chain_idx)
{
int index;
if (is_mt7663(&dev->mt76))
return mt7663_eeprom_get_target_power_index(dev, chan,
chain_idx);
if (chain_idx > 3)
return -EINVAL;
/* TSSI disabled */
if (mt7615_ext_pa_enabled(dev, chan->band)) {
if (chan->band == NL80211_BAND_2GHZ)
return MT_EE_EXT_PA_2G_TARGET_POWER;
else
return MT_EE_EXT_PA_5G_TARGET_POWER;
}
/* TSSI enabled */
if (chan->band == NL80211_BAND_2GHZ) {
index = MT_EE_TX0_2G_TARGET_POWER + chain_idx * 6;
} else {
int group = mt7615_get_channel_group(chan->hw_value);
switch (chain_idx) {
case 1:
index = MT_EE_TX1_5G_G0_TARGET_POWER;
break;
case 2:
index = MT_EE_TX2_5G_G0_TARGET_POWER;
break;
case 3:
index = MT_EE_TX3_5G_G0_TARGET_POWER;
break;
case 0:
default:
index = MT_EE_TX0_5G_G0_TARGET_POWER;
break;
}
index += 5 * group;
}
return index;
}
int mt7615_eeprom_get_power_delta_index(struct mt7615_dev *dev,
enum nl80211_band band)
{
/* assume the first rate has the highest power offset */
if (is_mt7663(&dev->mt76)) {
if (band == NL80211_BAND_2GHZ)
return MT_EE_TX0_5G_G0_TARGET_POWER;
else
return MT7663_EE_5G_RATE_POWER;
}
if (band == NL80211_BAND_2GHZ)
return MT_EE_2G_RATE_POWER;
else
return MT_EE_5G_RATE_POWER;
}
static void mt7615_apply_cal_free_data(struct mt7615_dev *dev)
{
static const u16 ical[] = {
0x53, 0x54, 0x55, 0x56, 0x57, 0x5c, 0x5d, 0x62, 0x63, 0x68,
0x69, 0x6e, 0x6f, 0x73, 0x74, 0x78, 0x79, 0x82, 0x83, 0x87,
0x88, 0x8c, 0x8d, 0x91, 0x92, 0x96, 0x97, 0x9b, 0x9c, 0xa0,
0xa1, 0xaa, 0xab, 0xaf, 0xb0, 0xb4, 0xb5, 0xb9, 0xba, 0xf4,
0xf7, 0xff,
0x140, 0x141, 0x145, 0x146, 0x14a, 0x14b, 0x154, 0x155, 0x159,
0x15a, 0x15e, 0x15f, 0x163, 0x164, 0x168, 0x169, 0x16d, 0x16e,
0x172, 0x173, 0x17c, 0x17d, 0x181, 0x182, 0x186, 0x187, 0x18b,
0x18c
};
static const u16 ical_nocheck[] = {
0x110, 0x111, 0x112, 0x113, 0x114, 0x115, 0x116, 0x117, 0x118,
0x1b5, 0x1b6, 0x1b7, 0x3ac, 0x3ad, 0x3ae, 0x3af, 0x3b0, 0x3b1,
0x3b2
};
u8 *eeprom = dev->mt76.eeprom.data;
u8 *otp = dev->mt76.otp.data;
int i;
if (!otp)
return;
for (i = 0; i < ARRAY_SIZE(ical); i++)
if (!otp[ical[i]])
return;
for (i = 0; i < ARRAY_SIZE(ical); i++)
eeprom[ical[i]] = otp[ical[i]];
for (i = 0; i < ARRAY_SIZE(ical_nocheck); i++)
eeprom[ical_nocheck[i]] = otp[ical_nocheck[i]];
}
static void mt7622_apply_cal_free_data(struct mt7615_dev *dev)
{
static const u16 ical[] = {
0x53, 0x54, 0x55, 0x56, 0xf4, 0xf7, 0x144, 0x156, 0x15b
};
u8 *eeprom = dev->mt76.eeprom.data;
u8 *otp = dev->mt76.otp.data;
int i;
if (!otp)
return;
for (i = 0; i < ARRAY_SIZE(ical); i++) {
if (!otp[ical[i]])
continue;
eeprom[ical[i]] = otp[ical[i]];
}
}
static void mt7615_cal_free_data(struct mt7615_dev *dev)
{
struct device_node *np = dev->mt76.dev->of_node;
if (!np || !of_property_read_bool(np, "mediatek,eeprom-merge-otp"))
return;
switch (mt76_chip(&dev->mt76)) {
case 0x7622:
mt7622_apply_cal_free_data(dev);
break;
case 0x7615:
case 0x7611:
mt7615_apply_cal_free_data(dev);
break;
}
}
int mt7615_eeprom_init(struct mt7615_dev *dev, u32 addr)
{
int ret;
ret = mt7615_eeprom_load(dev, addr);
if (ret < 0)
return ret;
ret = mt7615_check_eeprom(&dev->mt76);
if (ret && dev->mt76.otp.data) {
memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data,
dev->mt76.otp.size);
} else {
dev->flash_eeprom = true;
mt7615_cal_free_data(dev);
}
mt7615_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;
}
EXPORT_SYMBOL_GPL(mt7615_eeprom_init);
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