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