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mt76x0: eeprom: load eeprom data from mtd by default 

Read eeprom data from mtd memory by default and fall-back
to efuse if it fails

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2018-09-28 13:39:06 +02:00 committed by Felix Fietkau
parent 188fd8c4ce
commit 8d98c15343
1 changed files with 43 additions and 13 deletions
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56
drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c
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@ -277,24 +277,54 @@ void mt76x0_get_power_info(struct mt76x0_dev *dev, u8 *info)
info[1] = 5;
}
static int mt76x0_check_eeprom(struct mt76x0_dev *dev)
{
u16 val;
val = get_unaligned_le16(dev->mt76.eeprom.data);
if (!val)
val = get_unaligned_le16(dev->mt76.eeprom.data +
MT_EE_PCI_ID);
switch (val) {
case 0x7650:
case 0x7610:
return 0;
default:
dev_err(dev->mt76.dev, "EEPROM data check failed: %04x\n",
val);
return -EINVAL;
}
}
static int mt76x0_load_eeprom(struct mt76x0_dev *dev)
{
int found;
found = mt76_eeprom_init(&dev->mt76, MT76X0_EEPROM_SIZE);
if (found < 0)
return found;
if (found && !mt76x0_check_eeprom(dev))
return 0;
found = mt76x0_efuse_physical_size_check(dev);
if (found < 0)
return found;
return mt76x02_get_efuse_data(&dev->mt76, 0, dev->mt76.eeprom.data,
MT76X0_EEPROM_SIZE, MT_EE_READ);
}
int mt76x0_eeprom_init(struct mt76x0_dev *dev)
{
u8 version, fae;
u16 data;
int ret;
int err;
ret = mt76x0_efuse_physical_size_check(dev);
if (ret)
return ret;
ret = mt76_eeprom_init(&dev->mt76, MT76X0_EEPROM_SIZE);
if (ret < 0)
return ret;
ret = mt76x02_get_efuse_data(&dev->mt76, 0, dev->mt76.eeprom.data,
MT76X0_EEPROM_SIZE, MT_EE_READ);
if (ret)
return ret;
err = mt76x0_load_eeprom(dev);
if (err < 0)
return err;
data = mt76x02_eeprom_get(&dev->mt76, MT_EE_VERSION);
version = data >> 8;