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mt76: mt7603: check for single-stream EEPROM configuration 

Some devices using MT7628 or MT7603 have only one antenna chain connected.
Detect these using the EEPROM rx/tx path settings

Reported-by: Qin Wei <me@vonger.cn>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2020-08-25 07:03:37 +02:00
parent 2d68104742
commit d407afcbd6
3 changed files with 18 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

17
drivers/net/wireless/mediatek/mt76/mt7603/eeprom.c
View File

@ -147,8 +147,14 @@ static int mt7603_check_eeprom(struct mt76_dev *dev)
}
}
static inline bool is_mt7688(struct mt7603_dev *dev)
{
return mt76_rr(dev, MT_EFUSE_BASE + 0x64) & BIT(4);
}
int mt7603_eeprom_init(struct mt7603_dev *dev)
{
u8 *eeprom;
int ret;
ret = mt7603_eeprom_load(dev);
@ -163,9 +169,16 @@ int mt7603_eeprom_init(struct mt7603_dev *dev)
MT7603_EEPROM_SIZE);
}
eeprom = (u8 *)dev->mt76.eeprom.data;
dev->mt76.cap.has_2ghz = true;
memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,
ETH_ALEN);
memcpy(dev->mt76.macaddr, eeprom + MT_EE_MAC_ADDR, ETH_ALEN);
/* Check for 1SS devices */
dev->mphy.antenna_mask = 3;
if (FIELD_GET(MT_EE_NIC_CONF_0_RX_PATH, eeprom[MT_EE_NIC_CONF_0]) == 1 ||
FIELD_GET(MT_EE_NIC_CONF_0_TX_PATH, eeprom[MT_EE_NIC_CONF_0]) == 1 ||
is_mt7688(dev))
dev->mphy.antenna_mask = 1;
mt76_eeprom_override(&dev->mt76);

3
drivers/net/wireless/mediatek/mt76/mt7603/eeprom.h
View File

@ -85,4 +85,7 @@ enum mt7603_eeprom_source {
MT_EE_SRC_FLASH,
};
#define MT_EE_NIC_CONF_0_RX_PATH GENMASK(3, 0)
#define MT_EE_NIC_CONF_0_TX_PATH GENMASK(7, 4)
#endif

5
drivers/net/wireless/mediatek/mt76/mt7603/init.c
View File

@ -536,11 +536,6 @@ int mt7603_register_device(struct mt7603_dev *dev)
tasklet_init(&dev->mt76.pre_tbtt_tasklet, mt7603_pre_tbtt_tasklet,
(unsigned long)dev);
/* Check for 7688, which only has 1SS */
dev->mphy.antenna_mask = 3;
if (mt76_rr(dev, MT_EFUSE_BASE + 0x64) & BIT(4))
dev->mphy.antenna_mask = 1;
dev->slottime = 9;
dev->sensitivity_limit = 28;
dev->dynamic_sensitivity = true;