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mt76: mt7915: introduce SAR support

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Add SAR spec support to mt7915 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 2021-11-23 17:24:31 +01:00 committed by Felix Fietkau
parent 4bbd6d83af
commit 2c70627b09
2 changed files with 27 additions and 4 deletions
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23
drivers/net/wireless/mediatek/mt76/mt7915/main.c
View File

@ -423,6 +423,28 @@ out:
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,

8
drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
View File

@ -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;