[PATCH 3/3] mt76: mt7921: introduce BIOS SAR config in tx power

[Felix Fietkau]

On 19.05.22 08:38, Deren Wu wrote:
> From: Deren Wu <deren.wu at mediatek.com>
> 
> Add new function mt7921_set_tx_sar_pwr() to update SAR power from
> .set_sar_specs and BIOS setting. Both settings would be merged into
> mt76_freq_range_power for final tx power value.
> 
> Reviewed-by: Sean Wang <sean.wang at mediatek.com>
> Co-developed-by: Ming Yen Hsieh <mingyen.hsieh at mediatek.com>
> Signed-off-by: Ming Yen Hsieh <mingyen.hsieh at mediatek.com>
> Signed-off-by: Deren Wu <deren.wu at mediatek.com>
> ---
>   .../net/wireless/mediatek/mt76/mt7921/init.c  |  3 +-
>   .../net/wireless/mediatek/mt76/mt7921/main.c  | 32 +++++++++++++------
>   .../wireless/mediatek/mt76/mt7921/mt7921.h    |  2 ++
>   3 files changed, 26 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/main.c b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
> index 80279f342109..c86d8805f291 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7921/main.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7921/main.c
> @@ -1469,20 +1469,34 @@ static void mt7921_ipv6_addr_change(struct ieee80211_hw *hw,
>   }
>   #endif
>   
> +int mt7921_set_tx_sar_pwr(struct ieee80211_hw *hw,
> +			  const struct cfg80211_sar_specs *sar)
> +{
> +	struct mt76_phy *mphy = hw->priv;
> +	int err;
> +
> +	if (sar) {
> +		err = mt76_init_sar_power(hw, sar);
> +		if (err)
> +			return err;
> +	}
> +
> +	mt7921_init_bios_sar_power(mt7921_hw_phy(hw), !sar);
> +
> +	err = mt76_connac_mcu_set_rate_txpower(mphy);
> +
> +	return err;
> +}
> +EXPORT_SYMBOL_GPL(mt7921_set_tx_sar_pwr);
Why is this exported?

- Felix