1 // SPDX-License-Identifier: ISC
3 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
4 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
7 #include <asm/unaligned.h>
9 #include "mt76x02_eeprom.h"
12 mt76x02_efuse_read(struct mt76x02_dev *dev, u16 addr, u8 *data,
13 enum mt76x02_eeprom_modes mode)
18 val = mt76_rr(dev, MT_EFUSE_CTRL);
19 val &= ~(MT_EFUSE_CTRL_AIN |
21 val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
22 val |= FIELD_PREP(MT_EFUSE_CTRL_MODE, mode);
23 val |= MT_EFUSE_CTRL_KICK;
24 mt76_wr(dev, MT_EFUSE_CTRL, val);
26 if (!mt76_poll_msec(dev, MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000))
31 val = mt76_rr(dev, MT_EFUSE_CTRL);
32 if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT) {
33 memset(data, 0xff, 16);
37 for (i = 0; i < 4; i++) {
38 val = mt76_rr(dev, MT_EFUSE_DATA(i));
39 put_unaligned_le32(val, data + 4 * i);
45 int mt76x02_eeprom_copy(struct mt76x02_dev *dev,
46 enum mt76x02_eeprom_field field,
49 if (field + len > dev->mt76.eeprom.size)
52 memcpy(dest, dev->mt76.eeprom.data + field, len);
55 EXPORT_SYMBOL_GPL(mt76x02_eeprom_copy);
57 int mt76x02_get_efuse_data(struct mt76x02_dev *dev, u16 base, void *buf,
58 int len, enum mt76x02_eeprom_modes mode)
62 for (i = 0; i + 16 <= len; i += 16) {
63 ret = mt76x02_efuse_read(dev, base + i, buf + i, mode);
70 EXPORT_SYMBOL_GPL(mt76x02_get_efuse_data);
72 void mt76x02_eeprom_parse_hw_cap(struct mt76x02_dev *dev)
74 u16 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
76 switch (FIELD_GET(MT_EE_NIC_CONF_0_BOARD_TYPE, val)) {
78 dev->mphy.cap.has_5ghz = true;
81 dev->mphy.cap.has_2ghz = true;
84 dev->mphy.cap.has_2ghz = true;
85 dev->mphy.cap.has_5ghz = true;
89 EXPORT_SYMBOL_GPL(mt76x02_eeprom_parse_hw_cap);
91 bool mt76x02_ext_pa_enabled(struct mt76x02_dev *dev, enum nl80211_band band)
93 u16 conf0 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
95 if (band == NL80211_BAND_5GHZ)
96 return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_5G);
98 return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_2G);
100 EXPORT_SYMBOL_GPL(mt76x02_ext_pa_enabled);
102 void mt76x02_get_rx_gain(struct mt76x02_dev *dev, enum nl80211_band band,
103 u16 *rssi_offset, s8 *lna_2g, s8 *lna_5g)
107 val = mt76x02_eeprom_get(dev, MT_EE_LNA_GAIN);
108 *lna_2g = val & 0xff;
109 lna_5g[0] = val >> 8;
111 val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_1);
112 lna_5g[1] = val >> 8;
114 val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_1);
115 lna_5g[2] = val >> 8;
117 if (!mt76x02_field_valid(lna_5g[1]))
118 lna_5g[1] = lna_5g[0];
120 if (!mt76x02_field_valid(lna_5g[2]))
121 lna_5g[2] = lna_5g[0];
123 if (band == NL80211_BAND_2GHZ)
124 *rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_0);
126 *rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_0);
128 EXPORT_SYMBOL_GPL(mt76x02_get_rx_gain);
130 u8 mt76x02_get_lna_gain(struct mt76x02_dev *dev,
131 s8 *lna_2g, s8 *lna_5g,
132 struct ieee80211_channel *chan)
136 if (chan->band == NL80211_BAND_2GHZ)
138 else if (chan->hw_value <= 64)
140 else if (chan->hw_value <= 128)
145 return lna != 0xff ? lna : 0;
147 EXPORT_SYMBOL_GPL(mt76x02_get_lna_gain);