use wiphy_read_of_freq_limits to parse band capability overrides

Signed-off-by: Felix Fietkau <nbd@nbd.name>

eeprom.c

@@ -80,21 +80,11 @@ mt76_eeprom_override(struct mt76_dev *dev)
 {
 #ifdef CONFIG_OF
 	struct device_node *np = dev->dev->of_node;
-	const __be32 *val;
 	const u8 *mac;
-	int size;
 
 	if (!np)
 		return;
 
-	val = of_get_property(np, "mediatek,2ghz", &size);
-	if (val)
-		dev->cap.has_2ghz = be32_to_cpup(val);
-
-	val = of_get_property(np, "mediatek,5ghz", &size);
-	if (val)
-		dev->cap.has_5ghz = be32_to_cpup(val);
-
 	mac = of_get_mac_address(np);
 	if (mac)
 		memcpy(dev->macaddr, mac, ETH_ALEN);
@@ -107,7 +97,6 @@ mt76_eeprom_override(struct mt76_dev *dev)
 			 dev->macaddr);
 	}
 }
-EXPORT_SYMBOL_GPL(mt76_eeprom_override);
 
 int
 mt76_eeprom_init(struct mt76_dev *dev, int len)

mac80211.c

@@ -168,6 +168,31 @@ mt76_init_sband_5g(struct mt76_dev *dev, struct ieee80211_rate *rates,
 			       rates, n_rates, vht);
 }
 
+static void
+mt76_check_sband(struct mt76_dev *dev, int band)
+{
+	struct ieee80211_supported_band *sband = dev->hw->wiphy->bands[band];
+	bool found = false;
+	int i;
+
+	if (!sband)
+		return;
+
+	for (i = 0; i < sband->n_channels; i++) {
+		if (sband->channels[i].flags & IEEE80211_CHAN_DISABLED)
+			continue;
+
+		found = true;
+		break;
+	}
+
+	if (found)
+		return;
+
+	sband->n_channels = 0;
+	dev->hw->wiphy->bands[band] = NULL;
+}
+
 int mt76_register_device(struct mt76_dev *dev, bool vht,
 			 struct ieee80211_rate *rates, int n_rates)
 {
@@ -181,6 +206,8 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,
 	spin_lock_init(&dev->cc_lock);
 	INIT_LIST_HEAD(&dev->txwi_cache);
 
+	mt76_eeprom_override(dev);
+
 	SET_IEEE80211_DEV(hw, dev->dev);
 	SET_IEEE80211_PERM_ADDR(hw, dev->macaddr);
 
@@ -221,6 +248,10 @@ int mt76_register_device(struct mt76_dev *dev, bool vht,
 			return ret;
 	}
 
+	wiphy_read_of_freq_limits(dev->hw->wiphy);
+	mt76_check_sband(dev, NL80211_BAND_2GHZ);
+	mt76_check_sband(dev, NL80211_BAND_5GHZ);
+
 	return ieee80211_register_hw(hw);
 }
 EXPORT_SYMBOL_GPL(mt76_register_device);

mt76.h

@@ -314,7 +314,6 @@ void mt76_unregister_device(struct mt76_dev *dev);
 struct dentry *mt76_register_debugfs(struct mt76_dev *dev);
 
 int mt76_eeprom_init(struct mt76_dev *dev, int len);
-void mt76_eeprom_override(struct mt76_dev *dev);
 
 static inline struct ieee80211_txq *
 mtxq_to_txq(struct mt76_txq *mtxq)
@@ -351,5 +350,6 @@ int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 void mt76_tx_free(struct mt76_dev *dev);
 void mt76_put_txwi(struct mt76_dev *dev, struct mt76_txwi_cache *t);
 void mt76_rx_complete(struct mt76_dev *dev, enum mt76_rxq_id q);
+void mt76_eeprom_override(struct mt76_dev *dev);
 
 #endif

mt7603_eeprom.c

@@ -157,7 +157,6 @@ int mt7603_eeprom_init(struct mt7603_dev *dev)
 	       ETH_ALEN);
 
 	mt7603_apply_cal_free_data(dev, dev->mt76.otp.data);
-	mt76_eeprom_override(&dev->mt76);
 
 	return 0;
 }

mt76x2_eeprom.c

@@ -637,7 +637,6 @@ int mt76x2_eeprom_init(struct mt76x2_dev *dev)
 
 	mt76x2_eeprom_parse_hw_cap(dev);
 	mt76x2_eeprom_get_macaddr(dev);
-	mt76_eeprom_override(&dev->mt76);
 	dev->mt76.macaddr[0] &= ~BIT(1);
 
 	return 0;