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mt76: mt7615: init per-channel target power 

Set per-channel target power as the minimum between the regulatory
tx power and the value configured in the eeprom

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2019-06-11 08:38:52 +02:00 committed by Felix Fietkau
parent bf92e76851
commit 391ff7ffd1
1 changed files with 43 additions and 0 deletions
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43
drivers/net/wireless/mediatek/mt76/mt7615/init.c
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@ -165,6 +165,46 @@ static int mt7615_init_debugfs(struct mt7615_dev *dev)
return 0;
}
static void
mt7615_init_txpower(struct mt7615_dev *dev,
struct ieee80211_supported_band *sband)
{
int i, n_chains = hweight8(dev->mt76.antenna_mask);
u8 *eep = (u8 *)dev->mt76.eeprom.data;
for (i = 0; i < sband->n_channels; i++) {
struct ieee80211_channel *chan = &sband->channels[i];
u8 target_power = 0;
int j;
for (j = 0; j < n_chains; j++) {
int index;
index = mt7615_eeprom_get_power_index(chan, j);
target_power = max(target_power, eep[index]);
}
target_power = DIV_ROUND_UP(target_power, 2);
switch (n_chains) {
case 4:
target_power += 6;
break;
case 3:
target_power += 4;
break;
case 2:
target_power += 3;
break;
default:
break;
}
chan->max_power = min_t(int, chan->max_reg_power,
target_power);
chan->orig_mpwr = target_power;
}
}
int mt7615_register_device(struct mt7615_dev *dev)
{
struct ieee80211_hw *hw = mt76_hw(dev);
@ -212,6 +252,9 @@ int mt7615_register_device(struct mt7615_dev *dev)
if (ret)
return ret;
mt7615_init_txpower(dev, &dev->mt76.sband_2g.sband);
mt7615_init_txpower(dev, &dev->mt76.sband_5g.sband);
hw->max_tx_fragments = MT_TXP_MAX_BUF_NUM;
return mt7615_init_debugfs(dev);