diff options
| author | Felix Fietkau <nbd@nbd.name> | 2017-12-14 18:39:12 +0300 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2018-01-08 20:25:51 +0300 |
| commit | 53aa29b274bae1d46bda2435e736d335078ae9de (patch) | |
| tree | 2458d496779cacb0feea8cb81e8e19851bf1d01e | |
| parent | 984ea50324ec6bad2a04ac7869dfc428f80b8bee (diff) | |
| download | linux-53aa29b274bae1d46bda2435e736d335078ae9de.tar.xz | |
mt76x2: convert between per-chain tx power and combined output
Using both chains adds max. 3 dBm. A similar worst-case calculation is
being used in ath9k as well to ensure that the hardware stays within
regulatory limits
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x2_init.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76x2_main.c | 7 |
2 files changed, 10 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_init.c b/drivers/net/wireless/mediatek/mt76/mt76x2_init.c index 0755b451829e..3e3a01b6f2ce 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2_init.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2_init.c @@ -785,6 +785,9 @@ mt76x2_init_txpower(struct mt76x2_dev *dev, chan->max_power = mt76x2_get_max_rate_power(&t) + target_power; chan->max_power /= 2; + + /* convert to combined output power on 2x2 devices */ + chan->max_power += 3; } } diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_main.c b/drivers/net/wireless/mediatek/mt76/mt76x2_main.c index a6936b97f819..f74b8195421a 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2_main.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2_main.c @@ -155,6 +155,9 @@ mt76x2_config(struct ieee80211_hw *hw, u32 changed) if (changed & IEEE80211_CONF_CHANGE_POWER) { dev->txpower_conf = hw->conf.power_level * 2; + /* convert to per-chain power for 2x2 devices */ + dev->txpower_conf -= 6; + if (test_bit(MT76_STATE_RUNNING, &dev->mt76.state)) { mt76x2_phy_set_txpower(dev); mt76x2_tx_set_txpwr_auto(dev, dev->txpower_conf); @@ -437,6 +440,10 @@ mt76x2_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif, int *dbm) struct mt76x2_dev *dev = hw->priv; *dbm = dev->txpower_cur / 2; + + /* convert from per-chain power to combined output on 2x2 devices */ + *dbm += 3; + return 0; } |