155 lines
3.5 KiB
C
155 lines
3.5 KiB
C
// SPDX-License-Identifier: ISC
|
|
/*
|
|
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
|
|
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
|
|
*/
|
|
|
|
#include <asm/unaligned.h>
|
|
|
|
#include "mt76x02_eeprom.h"
|
|
|
|
static int
|
|
mt76x02_efuse_read(struct mt76x02_dev *dev, u16 addr, u8 *data,
|
|
enum mt76x02_eeprom_modes mode)
|
|
{
|
|
u32 val;
|
|
int i;
|
|
|
|
val = mt76_rr(dev, MT_EFUSE_CTRL);
|
|
val &= ~(MT_EFUSE_CTRL_AIN |
|
|
MT_EFUSE_CTRL_MODE);
|
|
val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
|
|
val |= FIELD_PREP(MT_EFUSE_CTRL_MODE, mode);
|
|
val |= MT_EFUSE_CTRL_KICK;
|
|
mt76_wr(dev, MT_EFUSE_CTRL, val);
|
|
|
|
if (!mt76_poll_msec(dev, MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
|
|
return -ETIMEDOUT;
|
|
|
|
udelay(2);
|
|
|
|
val = mt76_rr(dev, MT_EFUSE_CTRL);
|
|
if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT) {
|
|
memset(data, 0xff, 16);
|
|
return 0;
|
|
}
|
|
|
|
for (i = 0; i < 4; i++) {
|
|
val = mt76_rr(dev, MT_EFUSE_DATA(i));
|
|
put_unaligned_le32(val, data + 4 * i);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int mt76x02_eeprom_copy(struct mt76x02_dev *dev,
|
|
enum mt76x02_eeprom_field field,
|
|
void *dest, int len)
|
|
{
|
|
if (field + len > dev->mt76.eeprom.size)
|
|
return -1;
|
|
|
|
memcpy(dest, dev->mt76.eeprom.data + field, len);
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mt76x02_eeprom_copy);
|
|
|
|
int mt76x02_get_efuse_data(struct mt76x02_dev *dev, u16 base, void *buf,
|
|
int len, enum mt76x02_eeprom_modes mode)
|
|
{
|
|
int ret, i;
|
|
|
|
for (i = 0; i + 16 <= len; i += 16) {
|
|
ret = mt76x02_efuse_read(dev, base + i, buf + i, mode);
|
|
if (ret)
|
|
return ret;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mt76x02_get_efuse_data);
|
|
|
|
void mt76x02_eeprom_parse_hw_cap(struct mt76x02_dev *dev)
|
|
{
|
|
u16 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
|
|
|
|
switch (FIELD_GET(MT_EE_NIC_CONF_0_BOARD_TYPE, val)) {
|
|
case BOARD_TYPE_5GHZ:
|
|
dev->mphy.cap.has_5ghz = true;
|
|
break;
|
|
case BOARD_TYPE_2GHZ:
|
|
dev->mphy.cap.has_2ghz = true;
|
|
break;
|
|
default:
|
|
dev->mphy.cap.has_2ghz = true;
|
|
dev->mphy.cap.has_5ghz = true;
|
|
break;
|
|
}
|
|
}
|
|
EXPORT_SYMBOL_GPL(mt76x02_eeprom_parse_hw_cap);
|
|
|
|
bool mt76x02_ext_pa_enabled(struct mt76x02_dev *dev, enum nl80211_band band)
|
|
{
|
|
u16 conf0 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
|
|
|
|
if (band == NL80211_BAND_5GHZ)
|
|
return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_5G);
|
|
else
|
|
return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_2G);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mt76x02_ext_pa_enabled);
|
|
|
|
void mt76x02_get_rx_gain(struct mt76x02_dev *dev, enum nl80211_band band,
|
|
u16 *rssi_offset, s8 *lna_2g, s8 *lna_5g)
|
|
{
|
|
u16 val;
|
|
|
|
val = mt76x02_eeprom_get(dev, MT_EE_LNA_GAIN);
|
|
*lna_2g = val & 0xff;
|
|
lna_5g[0] = val >> 8;
|
|
|
|
val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_1);
|
|
lna_5g[1] = val >> 8;
|
|
|
|
val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_1);
|
|
lna_5g[2] = val >> 8;
|
|
|
|
if (!mt76x02_field_valid(lna_5g[1]))
|
|
lna_5g[1] = lna_5g[0];
|
|
|
|
if (!mt76x02_field_valid(lna_5g[2]))
|
|
lna_5g[2] = lna_5g[0];
|
|
|
|
if (band == NL80211_BAND_2GHZ)
|
|
*rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_0);
|
|
else
|
|
*rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_0);
|
|
}
|
|
EXPORT_SYMBOL_GPL(mt76x02_get_rx_gain);
|
|
|
|
u8 mt76x02_get_lna_gain(struct mt76x02_dev *dev,
|
|
s8 *lna_2g, s8 *lna_5g,
|
|
struct ieee80211_channel *chan)
|
|
{
|
|
u16 val;
|
|
u8 lna;
|
|
|
|
val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_1);
|
|
if (val & MT_EE_NIC_CONF_1_LNA_EXT_2G)
|
|
*lna_2g = 0;
|
|
if (val & MT_EE_NIC_CONF_1_LNA_EXT_5G)
|
|
memset(lna_5g, 0, sizeof(s8) * 3);
|
|
|
|
if (chan->band == NL80211_BAND_2GHZ)
|
|
lna = *lna_2g;
|
|
else if (chan->hw_value <= 64)
|
|
lna = lna_5g[0];
|
|
else if (chan->hw_value <= 128)
|
|
lna = lna_5g[1];
|
|
else
|
|
lna = lna_5g[2];
|
|
|
|
return lna != 0xff ? lna : 0;
|
|
}
|
|
EXPORT_SYMBOL_GPL(mt76x02_get_lna_gain);
|