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mt76: mt7615: apply calibration-free data from OTP

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MT7615 chips usually come pre-calibrated, even when used on embedded boards.
In that case, the on-flash EEPROM data needs to be merged with some data
from OTP ROM.
Run this merge if the external EEPROM data is valid and OTP has valid fields.

Tested-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Felix Fietkau 2019-08-21 15:21:00 +02:00
parent 8b8ab5c235
commit 55bbbefd84
1 changed files with 38 additions and 0 deletions
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38
drivers/net/wireless/mediatek/mt76/mt7615/eeprom.c
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@ -154,6 +154,42 @@ int mt7615_eeprom_get_power_index(struct mt7615_dev *dev,
return index;
}
static void mt7615_apply_cal_free_data(struct mt7615_dev *dev)
{
static const u16 ical[] = {
0x53, 0x54, 0x55, 0x56, 0x57, 0x5c, 0x5d, 0x62, 0x63, 0x68,
0x69, 0x6e, 0x6f, 0x73, 0x74, 0x78, 0x79, 0x82, 0x83, 0x87,
0x88, 0x8c, 0x8d, 0x91, 0x92, 0x96, 0x97, 0x9b, 0x9c, 0xa0,
0xa1, 0xaa, 0xab, 0xaf, 0xb0, 0xb4, 0xb5, 0xb9, 0xba, 0xf4,
0xf7, 0xff,
0x140, 0x141, 0x145, 0x146, 0x14a, 0x14b, 0x154, 0x155, 0x159,
0x15a, 0x15e, 0x15f, 0x163, 0x164, 0x168, 0x169, 0x16d, 0x16e,
0x172, 0x173, 0x17c, 0x17d, 0x181, 0x182, 0x186, 0x187, 0x18b,
0x18c
};
static const u16 ical_nocheck[] = {
0x110, 0x111, 0x112, 0x113, 0x114, 0x115, 0x116, 0x117, 0x118,
0x1b5, 0x1b6, 0x1b7, 0x3ac, 0x3ad, 0x3ae, 0x3af, 0x3b0, 0x3b1,
0x3b2
};
u8 *eeprom = dev->mt76.eeprom.data;
u8 *otp = dev->mt76.otp.data;
int i;
if (!otp)
return;
for (i = 0; i < ARRAY_SIZE(ical); i++)
if (!otp[ical[i]])
return;
for (i = 0; i < ARRAY_SIZE(ical); i++)
eeprom[ical[i]] = otp[ical[i]];
for (i = 0; i < ARRAY_SIZE(ical_nocheck); i++)
eeprom[ical_nocheck[i]] = otp[ical_nocheck[i]];
}
int mt7615_eeprom_init(struct mt7615_dev *dev)
{
int ret;
@ -166,6 +202,8 @@ int mt7615_eeprom_init(struct mt7615_dev *dev)
if (ret && dev->mt76.otp.data)
memcpy(dev->mt76.eeprom.data, dev->mt76.otp.data,
MT7615_EEPROM_SIZE);
else
mt7615_apply_cal_free_data(dev);
mt7615_eeprom_parse_hw_cap(dev);
memcpy(dev->mt76.macaddr, dev->mt76.eeprom.data + MT_EE_MAC_ADDR,