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@xxxxxxxxxx>
---
.../net/wireless/mediatek/mt76/mt7915/main.c | 23 +++++++++++++++++++
.../net/wireless/mediatek/mt76/mt7915/mcu.c | 8 +++----
2 files changed, 27 insertions(+), 4 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/main.c b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
index 057ab27b7083..2179ea85d304 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/main.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/main.c
@@ -425,6 +425,28 @@ 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);
@@ -1331,6 +1353,7 @@ 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,
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
index 7ed1c47dec63..d7a6df23fc42 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mcu.c
@@ -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;
--
2.31.1
