Commit 148950e5 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
Browse files

mt76: mt7615: introduce SAR support 



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

Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: default avatarFelix Fietkau <nbd@nbd.name>
parent 28225a6e

drivers/net/wireless/mediatek/mt76/mt7615/main.c

+24 −0
Original line number Diff line number Diff line
@@ -431,6 +431,29 @@ static int mt7615_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 
	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);

drivers/net/wireless/mediatek/mt76/mt7615/mcu.c

+3 −4
Original line number Diff line number Diff line
@@ -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;