[PATCH 3/3] wifi: mt76: mt7996: set correct background radar capability

[Daniel Golle]

On Thu, Sep 26, 2024 at 11:24:40AM +0800, Shayne Chen wrote:
> From: StanleyYP Wang <StanleyYP.Wang at mediatek.com>
> 
> Some of the variants do not support background radar, so add a helper
> to report background radar capability.
> 
> Signed-off-by: StanleyYP Wang <StanleyYP.Wang at mediatek.com>
> Signed-off-by: Shayne Chen <shayne.chen at mediatek.com>

Tested-by: Daniel Golle <daniel at makrotopia.org>

> ---
>  .../net/wireless/mediatek/mt76/mt7996/init.c  |  7 ++++---
>  .../wireless/mediatek/mt76/mt7996/mt7996.h    | 19 +++++++++++++++++++
>  2 files changed, 23 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/init.c b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
> index bf70799b4bc4..f6a010b61a8a 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7996/init.c
> +++ b/drivers/net/wireless/mediatek/mt76/mt7996/init.c
> @@ -390,9 +390,10 @@ mt7996_init_wiphy(struct ieee80211_hw *hw, struct mtk_wed_device *wed)
>  	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_CAN_REPLACE_PTK0);
>  	wiphy_ext_feature_set(wiphy, NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER);
>  
> -	if (!mdev->dev->of_node ||
> -	    !of_property_read_bool(mdev->dev->of_node,
> -				   "mediatek,disable-radar-background"))
> +	if (mt7996_has_background_radar(phy->dev) &&
> +	    (!mdev->dev->of_node ||
> +	     !of_property_read_bool(mdev->dev->of_node,
> +				    "mediatek,disable-radar-background")))
>  		wiphy_ext_feature_set(wiphy,
>  				      NL80211_EXT_FEATURE_RADAR_BACKGROUND);
>  
> diff --git a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
> index 3f3278f43c79..9aec97dd81d9 100644
> --- a/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
> +++ b/drivers/net/wireless/mediatek/mt76/mt7996/mt7996.h
> @@ -447,6 +447,25 @@ mt7996_band_valid(struct mt7996_dev *dev, u8 band)
>  	return band <= MT_BAND2;
>  }
>  
> +static inline bool
> +mt7996_has_background_radar(struct mt7996_dev *dev)
> +{
> +	switch (mt76_chip(&dev->mt76)) {
> +	case 0x7990:
> +		if (dev->var.type == MT7996_VAR_TYPE_233)
> +			return false;
> +		break;
> +	case 0x7992:
> +		if (dev->var.type == MT7992_VAR_TYPE_23)
> +			return false;
> +		break;
> +	default:
> +		return false;
> +	}
> +
> +	return true;
> +}
> +
>  extern const struct ieee80211_ops mt7996_ops;
>  extern struct pci_driver mt7996_pci_driver;
>  extern struct pci_driver mt7996_hif_driver;
> -- 
> 2.39.2
>