Commit 2c70627b authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Felix Fietkau
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mt76: mt7915: introduce SAR support 



Add SAR spec support to mt7915 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 4bbd6d83

drivers/net/wireless/mediatek/mt76/mt7915/main.c

+23 −0
Original line number Diff line number Diff line
@@ -423,6 +423,28 @@ static int mt7915_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd, 
	return err;

}



static int mt7915_set_sar_specs(struct ieee80211_hw *hw,

				const struct cfg80211_sar_specs *sar)

{

	struct mt7915_phy *phy = mt7915_hw_phy(hw);

	struct mt7915_dev *dev = mt7915_hw_dev(hw);

	int err = -EINVAL;



	mutex_lock(&dev->mt76.mutex);

	if (!cfg80211_chandef_valid(&phy->mt76->chandef))

		goto out;



	err = mt76_init_sar_power(hw, sar);

	if (err)

		goto out;



	err = mt7915_mcu_set_txpower_sku(phy);

out:

	mutex_unlock(&dev->mt76.mutex);



	return err;

}



static int mt7915_config(struct ieee80211_hw *hw, u32 changed)

{

	struct mt7915_dev *dev = mt7915_hw_dev(hw);
@@ -1329,6 +1351,7 @@ const struct ieee80211_ops mt7915_ops = { 
	.sw_scan_complete = mt76_sw_scan_complete,

	.release_buffered_frames = mt76_release_buffered_frames,

	.get_txpower = mt76_get_txpower,

	.set_sar_specs = mt7915_set_sar_specs,

	.channel_switch_beacon = mt7915_channel_switch_beacon,

	.get_stats = mt7915_get_stats,

	.get_et_sset_count = mt7915_get_et_sset_count,

drivers/net/wireless/mediatek/mt76/mt7915/mcu.c

+4 −4
Original line number Diff line number Diff line
@@ -3856,11 +3856,11 @@ int mt7915_mcu_set_txpower_sku(struct mt7915_phy *phy) 
	struct mt76_power_limits limits_array;

	s8 *la = (s8 *)&limits_array;

	int i, idx, n_chains = hweight8(mphy->antenna_mask);

	int tx_power;



	tx_power = hw->conf.power_level * 2 -

		   mt76_tx_power_nss_delta(n_chains);

	int tx_power = hw->conf.power_level * 2;



	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_array, tx_power);

	mphy->txpower_cur = tx_power;