diff options
author | Lorenzo Bianconi <lorenzo.bianconi@redhat.com> | 2018-09-28 13:39:06 +0200 |
---|---|---|
committer | Felix Fietkau <nbd@nbd.name> | 2018-10-01 12:34:43 +0200 |
commit | 8d98c15343912299a2b3d9cc26765fbe51aa229f (patch) | |
tree | 02f988f5522454f5d73a3b8bcbe5da68ac365b75 /drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c | |
parent | 188fd8c4ce4567cd23027387351da00bf2a7c1cd (diff) |
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>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c')
-rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c | 56 |
1 files changed, 43 insertions, 13 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c b/drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c index ef9c3df6a169..166a1fd8644e 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x0/eeprom.c @@ -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; |