2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
3 * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
5 * Permission to use, copy, modify, and/or distribute this software for any
6 * purpose with or without fee is hereby granted, provided that the above
7 * copyright notice and this permission notice appear in all copies.
9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 #include <asm/unaligned.h>
21 #include "mt76x02_eeprom.h"
22 #include "mt76x02_regs.h"
25 mt76x02_efuse_read(struct mt76_dev *dev, u16 addr, u8 *data,
26 enum mt76x02_eeprom_modes mode)
31 val = __mt76_rr(dev, MT_EFUSE_CTRL);
32 val &= ~(MT_EFUSE_CTRL_AIN |
34 val |= FIELD_PREP(MT_EFUSE_CTRL_AIN, addr & ~0xf);
35 val |= FIELD_PREP(MT_EFUSE_CTRL_MODE, mode);
36 val |= MT_EFUSE_CTRL_KICK;
37 __mt76_wr(dev, MT_EFUSE_CTRL, val);
39 if (!__mt76_poll_msec(dev, MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK,
45 val = __mt76_rr(dev, MT_EFUSE_CTRL);
46 if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT) {
47 memset(data, 0xff, 16);
51 for (i = 0; i < 4; i++) {
52 val = __mt76_rr(dev, MT_EFUSE_DATA(i));
53 put_unaligned_le32(val, data + 4 * i);
59 int mt76x02_get_efuse_data(struct mt76_dev *dev, u16 base, void *buf,
60 int len, enum mt76x02_eeprom_modes mode)
64 for (i = 0; i + 16 <= len; i += 16) {
65 ret = mt76x02_efuse_read(dev, base + i, buf + i, mode);
72 EXPORT_SYMBOL_GPL(mt76x02_get_efuse_data);
74 void mt76x02_eeprom_parse_hw_cap(struct mt76_dev *dev)
76 u16 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
78 switch (FIELD_GET(MT_EE_NIC_CONF_0_BOARD_TYPE, val)) {
80 dev->cap.has_5ghz = true;
83 dev->cap.has_2ghz = true;
86 dev->cap.has_2ghz = true;
87 dev->cap.has_5ghz = true;
91 EXPORT_SYMBOL_GPL(mt76x02_eeprom_parse_hw_cap);
93 bool mt76x02_ext_pa_enabled(struct mt76_dev *dev, enum nl80211_band band)
95 u16 conf0 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0);
97 if (band == NL80211_BAND_5GHZ)
98 return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_5G);
100 return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_2G);
102 EXPORT_SYMBOL_GPL(mt76x02_ext_pa_enabled);
104 void mt76x02_get_rx_gain(struct mt76_dev *dev, enum nl80211_band band,
105 u16 *rssi_offset, s8 *lna_2g, s8 *lna_5g)
109 val = mt76x02_eeprom_get(dev, MT_EE_LNA_GAIN);
110 *lna_2g = val & 0xff;
111 lna_5g[0] = val >> 8;
113 val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_1);
114 lna_5g[1] = val >> 8;
116 val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_1);
117 lna_5g[2] = val >> 8;
119 if (!mt76x02_field_valid(lna_5g[1]))
120 lna_5g[1] = lna_5g[0];
122 if (!mt76x02_field_valid(lna_5g[2]))
123 lna_5g[2] = lna_5g[0];
125 if (band == NL80211_BAND_2GHZ)
126 *rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_0);
128 *rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_0);
130 EXPORT_SYMBOL_GPL(mt76x02_get_rx_gain);
132 u8 mt76x02_get_lna_gain(struct mt76_dev *dev,
133 s8 *lna_2g, s8 *lna_5g,
134 struct ieee80211_channel *chan)
139 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_1);
140 if (val & MT_EE_NIC_CONF_1_LNA_EXT_2G)
142 if (val & MT_EE_NIC_CONF_1_LNA_EXT_5G)
143 memset(lna_5g, 0, sizeof(s8) * 3);
145 if (chan->band == NL80211_BAND_2GHZ)
147 else if (chan->hw_value <= 64)
149 else if (chan->hw_value <= 128)
154 return lna != 0xff ? lna : 0;
156 EXPORT_SYMBOL_GPL(mt76x02_get_lna_gain);