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mt76: mt7615: introduce SAR support

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Add SAR spec support to mt7615 driver to allow configuring SAR power
limitations on the frequency ranges from the userland.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Lorenzo Bianconi 2022-02-04 19:33:39 +01:00 committed by Felix Fietkau
parent 28225a6ef8
commit 148950e59a
2 changed files with 27 additions and 4 deletions
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24
drivers/net/wireless/mediatek/mt76/mt7615/main.c
View File

@ -431,6 +431,29 @@ out:
return err;
}
static int mt7615_set_sar_specs(struct ieee80211_hw *hw,
const struct cfg80211_sar_specs *sar)
{
struct mt7615_phy *phy = mt7615_hw_phy(hw);
int err;
if (!cfg80211_chandef_valid(&phy->mt76->chandef))
return -EINVAL;
err = mt76_init_sar_power(hw, sar);
if (err)
return err;
if (mt7615_firmware_offload(phy->dev))
return mt76_connac_mcu_set_rate_txpower(phy->mt76);
ieee80211_stop_queues(hw);
err = mt7615_set_channel(phy);
ieee80211_wake_queues(hw);
return err;
}
static int mt7615_config(struct ieee80211_hw *hw, u32 changed)
{
struct mt7615_dev *dev = mt7615_hw_dev(hw);
@ -1333,6 +1356,7 @@ const struct ieee80211_ops mt7615_ops = {
.set_wakeup = mt7615_set_wakeup,
.set_rekey_data = mt7615_set_rekey_data,
#endif /* CONFIG_PM */
.set_sar_specs = mt7615_set_sar_specs,
};
EXPORT_SYMBOL_GPL(mt7615_ops);

7
drivers/net/wireless/mediatek/mt76/mt7615/mcu.c
View File

@ -2020,7 +2020,7 @@ static void mt7615_mcu_set_txpower_sku(struct mt7615_phy *phy, u8 *sku)
struct mt76_power_limits limits;
s8 *limits_array = (s8 *)&limits;
int n_chains = hweight8(mphy->antenna_mask);
int tx_power;
int tx_power = hw->conf.power_level * 2;
int i;
static const u8 sku_mapping[] = {
#define SKU_FIELD(_type, _field) \
@ -2077,9 +2077,8 @@ static void mt7615_mcu_set_txpower_sku(struct mt7615_phy *phy, u8 *sku)
#undef SKU_FIELD
};
tx_power = hw->conf.power_level * 2 -
mt76_tx_power_nss_delta(n_chains);
tx_power = mt76_get_sar_power(mphy, mphy->chandef.chan, tx_power);
tx_power -= mt76_tx_power_nss_delta(n_chains);
tx_power = mt76_get_rate_power_limits(mphy, mphy->chandef.chan,
&limits, tx_power);
mphy->txpower_cur = tx_power;