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

[Shayne Chen]

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>
---
 .../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