diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c index 515bb58e19fd..eccad4987ac8 100644 --- a/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c @@ -93,6 +93,7 @@ static int mt7615_check_eeprom(struct mt76_dev *dev) static void mt7615_eeprom_parse_hw_cap(struct mt7615_dev *dev) { u8 val, *eeprom = dev->mt76.eeprom.data; + u8 tx_mask, rx_mask, max_nss; val = FIELD_GET(MT_EE_NIC_WIFI_CONF_BAND_SEL, eeprom[MT_EE_WIFI_CONF]); @@ -108,6 +109,23 @@ static void mt7615_eeprom_parse_hw_cap(struct mt7615_dev *dev) dev->mt76.cap.has_5ghz = true; break; } + + /* read tx-rx mask from eeprom */ + val = mt76_rr(dev, MT_TOP_STRAP_STA); + max_nss = val & MT_TOP_3NSS ? 3 : 4; + + rx_mask = FIELD_GET(MT_EE_NIC_CONF_RX_MASK, + eeprom[MT_EE_NIC_CONF_0]); + if (!rx_mask || rx_mask > max_nss) + rx_mask = max_nss; + + tx_mask = FIELD_GET(MT_EE_NIC_CONF_TX_MASK, + eeprom[MT_EE_NIC_CONF_0]); + if (!tx_mask || tx_mask > max_nss) + tx_mask = max_nss; + + dev->mt76.chainmask = tx_mask << 8 | rx_mask; + dev->mt76.antenna_mask = BIT(tx_mask) - 1; } int mt7615_eeprom_get_power_index(struct mt7615_dev *dev, |