mt76x0: init rx filter in mt76x0_init_hardware

Initialize rxfilter mask at bootstrap an not at mac start.
This is a preliminary patch to share mt76x2_mac_start routine
between mt76x2e and mt76x0e drivers
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76x0/init.c

@@ -271,15 +271,7 @@ int mt76x0_mac_start(struct mt76x0_dev *dev)
 	if (!mt76x02_wait_for_wpdma(&dev->mt76, 200000))
 		return -ETIMEDOUT;
 
-	dev->mt76.rxfilter = MT_RX_FILTR_CFG_CRC_ERR |
-		MT_RX_FILTR_CFG_PHY_ERR | MT_RX_FILTR_CFG_PROMISC |
-		MT_RX_FILTR_CFG_VER_ERR | MT_RX_FILTR_CFG_DUP |
-		MT_RX_FILTR_CFG_CFACK | MT_RX_FILTR_CFG_CFEND |
-		MT_RX_FILTR_CFG_ACK | MT_RX_FILTR_CFG_CTS |
-		MT_RX_FILTR_CFG_RTS | MT_RX_FILTR_CFG_PSPOLL |
-		MT_RX_FILTR_CFG_BA | MT_RX_FILTR_CFG_CTRL_RSV;
 	mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
-
 	mt76_wr(dev, MT_MAC_SYS_CTRL,
 		MT_MAC_SYS_CTRL_ENABLE_TX | MT_MAC_SYS_CTRL_ENABLE_RX);
 
@@ -370,6 +362,8 @@ int mt76x0_init_hardware(struct mt76x0_dev *dev)
 	if (ret)
 		return ret;
 
+	dev->mt76.rxfilter = mt76_rr(dev, MT_RX_FILTR_CFG);
+
 	ret = mt76x0_init_wcid_mem(dev);
 	if (ret)
 		return ret;

drivers/net/wireless/mediatek/mt76/mt76x0/main.c

@@ -73,6 +73,15 @@ static int mt76x0_config(struct ieee80211_hw *hw, u32 changed)
 			mt76x0_phy_set_txpower(dev);
 	}
 
+	if (changed & IEEE80211_CONF_CHANGE_MONITOR) {
+		if (!(hw->conf.flags & IEEE80211_CONF_MONITOR))
+			dev->mt76.rxfilter |= MT_RX_FILTR_CFG_PROMISC;
+		else
+			dev->mt76.rxfilter &= ~MT_RX_FILTR_CFG_PROMISC;
+
+		mt76_wr(dev, MT_RX_FILTR_CFG, dev->mt76.rxfilter);
+	}
+
 	mutex_unlock(&dev->mt76.mutex);
 
 	return ret;