mt76: mt7921: toggle runtime-pm adding a monitor vif

Toggle runtime-pm and deep-sleep configuration adding/removing
a montior vif in order to forward all tx/rx frames to mac80211.
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Tested-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76_connac.h

@@ -45,9 +45,11 @@ enum {
 };
 
 struct mt76_connac_pm {
-	bool enable;
-	bool ds_enable;
-	bool suspended;
+	bool enable:1;
+	bool enable_user:1;
+	bool ds_enable:1;
+	bool ds_enable_user:1;
+	bool suspended:1;
 
 	spinlock_t txq_lock;
 	struct {

drivers/net/wireless/mediatek/mt76/mt7921/debugfs.c

@@ -262,14 +262,6 @@ mt7921_txpwr(struct seq_file *s, void *data)
 	return 0;
 }
 
-static void
-mt7921_pm_interface_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
-{
-	struct mt7921_dev *dev = priv;
-
-	mt7921_mcu_set_beacon_filter(dev, vif, dev->pm.enable);
-}
-
 static int
 mt7921_pm_set(void *data, u64 val)
 {
@@ -278,10 +270,10 @@ mt7921_pm_set(void *data, u64 val)
 
 	mutex_lock(&dev->mt76.mutex);
 
-	if (val == pm->enable)
+	if (val == pm->enable_user)
 		goto out;
 
-	if (!pm->enable) {
+	if (!pm->enable_user) {
 		pm->stats.last_wake_event = jiffies;
 		pm->stats.last_doze_event = jiffies;
 	}
@@ -291,12 +283,8 @@ mt7921_pm_set(void *data, u64 val)
 	pm->enable = false;
 	mt76_connac_pm_wake(&dev->mphy, pm);
 
-	pm->enable = val;
-	ieee80211_iterate_active_interfaces(mt76_hw(dev),
-					    IEEE80211_IFACE_ITER_RESUME_ALL,
-					    mt7921_pm_interface_iter, dev);
-
-	mt76_connac_mcu_set_deep_sleep(&dev->mt76, pm->ds_enable);
+	pm->enable_user = val;
+	mt7921_set_runtime_pm(dev);
 	mt76_connac_power_save_sched(&dev->mphy, pm);
 out:
 	mutex_unlock(&dev->mt76.mutex);
@@ -309,7 +297,7 @@ mt7921_pm_get(void *data, u64 *val)
 {
 	struct mt7921_dev *dev = data;
 
-	*val = dev->pm.enable;
+	*val = dev->pm.enable_user;
 
 	return 0;
 }
@@ -321,13 +309,17 @@ mt7921_deep_sleep_set(void *data, u64 val)
 {
 	struct mt7921_dev *dev = data;
 	struct mt76_connac_pm *pm = &dev->pm;
+	bool monitor = !!(dev->mphy.hw->conf.flags & IEEE80211_CONF_MONITOR);
 	bool enable = !!val;
 
 	mt7921_mutex_acquire(dev);
-	if (pm->ds_enable != enable) {
-		mt76_connac_mcu_set_deep_sleep(&dev->mt76, enable);
-		pm->ds_enable = enable;
-	}
+	if (pm->ds_enable_user == enable)
+		goto out;
+
+	pm->ds_enable_user = enable;
+	pm->ds_enable = enable && !monitor;
+	mt76_connac_mcu_set_deep_sleep(&dev->mt76, pm->ds_enable);
+out:
 	mt7921_mutex_release(dev);
 
 	return 0;
@@ -338,7 +330,7 @@ mt7921_deep_sleep_get(void *data, u64 *val)
 {
 	struct mt7921_dev *dev = data;
 
-	*val = dev->pm.ds_enable;
+	*val = dev->pm.ds_enable_user;
 
 	return 0;
 }

drivers/net/wireless/mediatek/mt76/mt7921/init.c

@@ -229,7 +229,9 @@ int mt7921_register_device(struct mt7921_dev *dev)
 
 	/* TODO: mt7921s run sleep mode on default  */
 	if (mt76_is_mmio(&dev->mt76)) {
+		dev->pm.enable_user = true;
 		dev->pm.enable = true;
+		dev->pm.ds_enable_user = true;
 		dev->pm.ds_enable = true;
 	}
 

drivers/net/wireless/mediatek/mt76/mt7921/main.c

@@ -471,6 +471,28 @@ static int mt7921_set_key(struct ieee80211_hw *hw, enum set_key_cmd cmd,
 	return err;
 }
 
+static void
+mt7921_pm_interface_iter(void *priv, u8 *mac, struct ieee80211_vif *vif)
+{
+	struct mt7921_dev *dev = priv;
+
+	mt7921_mcu_set_beacon_filter(dev, vif, dev->pm.enable);
+}
+
+void mt7921_set_runtime_pm(struct mt7921_dev *dev)
+{
+	struct ieee80211_hw *hw = dev->mphy.hw;
+	struct mt76_connac_pm *pm = &dev->pm;
+	bool monitor = !!(hw->conf.flags & IEEE80211_CONF_MONITOR);
+
+	pm->enable = pm->enable_user && !monitor;
+	ieee80211_iterate_active_interfaces(hw,
+					    IEEE80211_IFACE_ITER_RESUME_ALL,
+					    mt7921_pm_interface_iter, dev);
+	pm->ds_enable = pm->ds_enable_user && !monitor;
+	mt76_connac_mcu_set_deep_sleep(&dev->mt76, pm->ds_enable);
+}
+
 static int mt7921_config(struct ieee80211_hw *hw, u32 changed)
 {
 	struct mt7921_dev *dev = mt7921_hw_dev(hw);
@@ -504,6 +526,7 @@ static int mt7921_config(struct ieee80211_hw *hw, u32 changed)
 		mt76_rmw_field(dev, MT_DMA_DCR0(0), MT_DMA_DCR0_RXD_G5_EN,
 			       enabled);
 		mt76_wr(dev, MT_WF_RFCR(0), phy->rxfilter);
+		mt7921_set_runtime_pm(dev);
 	}
 
 out:

drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h

@@ -457,4 +457,5 @@ int mt7921s_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr,
 void mt7921s_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
 bool mt7921s_tx_status_data(struct mt76_dev *mdev, u8 *update);
 void mt7921_mac_add_txs(struct mt7921_dev *dev, void *data);
+void mt7921_set_runtime_pm(struct mt7921_dev *dev);
 #endif