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/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
* Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#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->mt76.cap.has_5ghz = true;
break;
case BOARD_TYPE_2GHZ:
dev->mt76.cap.has_2ghz = true;
break;
default:
dev->mt76.cap.has_2ghz = true;
dev->mt76.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);
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