developer | 0f312e8 | 2022-11-01 12:31:52 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* |
| 3 | * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name> |
| 4 | * Copyright (C) 2018 Lorenzo Bianconi <lorenzo.bianconi83@gmail.com> |
| 5 | */ |
| 6 | |
| 7 | #include <asm/unaligned.h> |
| 8 | |
| 9 | #include "mt76x02_eeprom.h" |
| 10 | |
| 11 | static int |
| 12 | mt76x02_efuse_read(struct mt76x02_dev *dev, u16 addr, u8 *data, |
| 13 | enum mt76x02_eeprom_modes mode) |
| 14 | { |
| 15 | u32 val; |
| 16 | int i; |
| 17 | |
| 18 | val = mt76_rr(dev, MT_EFUSE_CTRL); |
| 19 | val &= ~(MT_EFUSE_CTRL_AIN | |
| 20 | MT_EFUSE_CTRL_MODE); |
| 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); |
| 25 | |
| 26 | if (!mt76_poll_msec(dev, MT_EFUSE_CTRL, MT_EFUSE_CTRL_KICK, 0, 1000)) |
| 27 | return -ETIMEDOUT; |
| 28 | |
| 29 | udelay(2); |
| 30 | |
| 31 | val = mt76_rr(dev, MT_EFUSE_CTRL); |
| 32 | if ((val & MT_EFUSE_CTRL_AOUT) == MT_EFUSE_CTRL_AOUT) { |
| 33 | memset(data, 0xff, 16); |
| 34 | return 0; |
| 35 | } |
| 36 | |
| 37 | for (i = 0; i < 4; i++) { |
| 38 | val = mt76_rr(dev, MT_EFUSE_DATA(i)); |
| 39 | put_unaligned_le32(val, data + 4 * i); |
| 40 | } |
| 41 | |
| 42 | return 0; |
| 43 | } |
| 44 | |
| 45 | int mt76x02_eeprom_copy(struct mt76x02_dev *dev, |
| 46 | enum mt76x02_eeprom_field field, |
| 47 | void *dest, int len) |
| 48 | { |
| 49 | if (field + len > dev->mt76.eeprom.size) |
| 50 | return -1; |
| 51 | |
| 52 | memcpy(dest, dev->mt76.eeprom.data + field, len); |
| 53 | return 0; |
| 54 | } |
| 55 | EXPORT_SYMBOL_GPL(mt76x02_eeprom_copy); |
| 56 | |
| 57 | int mt76x02_get_efuse_data(struct mt76x02_dev *dev, u16 base, void *buf, |
| 58 | int len, enum mt76x02_eeprom_modes mode) |
| 59 | { |
| 60 | int ret, i; |
| 61 | |
| 62 | for (i = 0; i + 16 <= len; i += 16) { |
| 63 | ret = mt76x02_efuse_read(dev, base + i, buf + i, mode); |
| 64 | if (ret) |
| 65 | return ret; |
| 66 | } |
| 67 | |
| 68 | return 0; |
| 69 | } |
| 70 | EXPORT_SYMBOL_GPL(mt76x02_get_efuse_data); |
| 71 | |
| 72 | void mt76x02_eeprom_parse_hw_cap(struct mt76x02_dev *dev) |
| 73 | { |
| 74 | u16 val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0); |
| 75 | |
| 76 | switch (FIELD_GET(MT_EE_NIC_CONF_0_BOARD_TYPE, val)) { |
| 77 | case BOARD_TYPE_5GHZ: |
| 78 | dev->mphy.cap.has_5ghz = true; |
| 79 | break; |
| 80 | case BOARD_TYPE_2GHZ: |
| 81 | dev->mphy.cap.has_2ghz = true; |
| 82 | break; |
| 83 | default: |
| 84 | dev->mphy.cap.has_2ghz = true; |
| 85 | dev->mphy.cap.has_5ghz = true; |
| 86 | break; |
| 87 | } |
| 88 | } |
| 89 | EXPORT_SYMBOL_GPL(mt76x02_eeprom_parse_hw_cap); |
| 90 | |
| 91 | bool mt76x02_ext_pa_enabled(struct mt76x02_dev *dev, enum nl80211_band band) |
| 92 | { |
| 93 | u16 conf0 = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_0); |
| 94 | |
| 95 | if (band == NL80211_BAND_5GHZ) |
| 96 | return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_5G); |
| 97 | else |
| 98 | return !(conf0 & MT_EE_NIC_CONF_0_PA_INT_2G); |
| 99 | } |
| 100 | EXPORT_SYMBOL_GPL(mt76x02_ext_pa_enabled); |
| 101 | |
| 102 | void mt76x02_get_rx_gain(struct mt76x02_dev *dev, enum nl80211_band band, |
| 103 | u16 *rssi_offset, s8 *lna_2g, s8 *lna_5g) |
| 104 | { |
| 105 | u16 val; |
| 106 | |
| 107 | val = mt76x02_eeprom_get(dev, MT_EE_LNA_GAIN); |
| 108 | *lna_2g = val & 0xff; |
| 109 | lna_5g[0] = val >> 8; |
| 110 | |
| 111 | val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_1); |
| 112 | lna_5g[1] = val >> 8; |
| 113 | |
| 114 | val = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_1); |
| 115 | lna_5g[2] = val >> 8; |
| 116 | |
| 117 | if (!mt76x02_field_valid(lna_5g[1])) |
| 118 | lna_5g[1] = lna_5g[0]; |
| 119 | |
| 120 | if (!mt76x02_field_valid(lna_5g[2])) |
| 121 | lna_5g[2] = lna_5g[0]; |
| 122 | |
| 123 | if (band == NL80211_BAND_2GHZ) |
| 124 | *rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_2G_0); |
| 125 | else |
| 126 | *rssi_offset = mt76x02_eeprom_get(dev, MT_EE_RSSI_OFFSET_5G_0); |
| 127 | } |
| 128 | EXPORT_SYMBOL_GPL(mt76x02_get_rx_gain); |
| 129 | |
| 130 | u8 mt76x02_get_lna_gain(struct mt76x02_dev *dev, |
| 131 | s8 *lna_2g, s8 *lna_5g, |
| 132 | struct ieee80211_channel *chan) |
| 133 | { |
| 134 | u16 val; |
| 135 | u8 lna; |
| 136 | |
| 137 | val = mt76x02_eeprom_get(dev, MT_EE_NIC_CONF_1); |
| 138 | if (val & MT_EE_NIC_CONF_1_LNA_EXT_2G) |
| 139 | *lna_2g = 0; |
| 140 | if (val & MT_EE_NIC_CONF_1_LNA_EXT_5G) |
| 141 | memset(lna_5g, 0, sizeof(s8) * 3); |
| 142 | |
| 143 | if (chan->band == NL80211_BAND_2GHZ) |
| 144 | lna = *lna_2g; |
| 145 | else if (chan->hw_value <= 64) |
| 146 | lna = lna_5g[0]; |
| 147 | else if (chan->hw_value <= 128) |
| 148 | lna = lna_5g[1]; |
| 149 | else |
| 150 | lna = lna_5g[2]; |
| 151 | |
| 152 | return lna != 0xff ? lna : 0; |
| 153 | } |
| 154 | EXPORT_SYMBOL_GPL(mt76x02_get_lna_gain); |