mt76: mt7615: add idle-timeout knob in mt7615 debugfs

Introduce idle-timeout knob in mt7615 debugfs in order to configure the
idle time to switch to low-power state
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt7615/debugfs.c

@@ -74,6 +74,29 @@ mt7615_pm_get(void *data, u64 *val)
 
 DEFINE_DEBUGFS_ATTRIBUTE(fops_pm, mt7615_pm_get, mt7615_pm_set, "%lld\n");
 
+static int
+mt7615_pm_idle_timeout_set(void *data, u64 val)
+{
+	struct mt7615_dev *dev = data;
+
+	dev->pm.idle_timeout = msecs_to_jiffies(val);
+
+	return 0;
+}
+
+static int
+mt7615_pm_idle_timeout_get(void *data, u64 *val)
+{
+	struct mt7615_dev *dev = data;
+
+	*val = jiffies_to_msecs(dev->pm.idle_timeout);
+
+	return 0;
+}
+
+DEFINE_DEBUGFS_ATTRIBUTE(fops_pm_idle_timeout, mt7615_pm_idle_timeout_get,
+			 mt7615_pm_idle_timeout_set, "%lld\n");
+
 static int
 mt7615_dbdc_set(void *data, u64 val)
 {
@@ -375,6 +398,8 @@ int mt7615_init_debugfs(struct mt7615_dev *dev)
 	debugfs_create_file("dbdc", 0600, dir, dev, &fops_dbdc);
 	debugfs_create_file("fw_debug", 0600, dir, dev, &fops_fw_debug);
 	debugfs_create_file("runtime-pm", 0600, dir, dev, &fops_pm);
+	debugfs_create_file("idle-timeout", 0600, dir, dev,
+			    &fops_pm_idle_timeout);
 	debugfs_create_devm_seqfile(dev->mt76.dev, "radio", dir,
 				    mt7615_radio_read);
 	debugfs_create_u32("dfs_hw_pattern", 0400, dir, &dev->hw_pattern);

drivers/net/wireless/mediatek/mt76/mt7615/init.c

@@ -456,6 +456,7 @@ void mt7615_init_device(struct mt7615_dev *dev)
 	timer_setup(&dev->phy.roc_timer, mt7615_roc_timer, 0);
 
 	mt7615_init_wiphy(hw);
+	dev->pm.idle_timeout = MT7615_PM_TIMEOUT;
 	dev->mphy.sband_2g.sband.ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;
 	dev->mphy.sband_5g.sband.ht_cap.cap |= IEEE80211_HT_CAP_LDPC_CODING;
 	dev->mphy.sband_5g.sband.vht_cap.cap |=

drivers/net/wireless/mediatek/mt76/mt7615/mac.c

@@ -1913,7 +1913,7 @@ void mt7615_pm_power_save_sched(struct mt7615_dev *dev)
 	dev->pm.last_activity = jiffies;
 	if (!test_bit(MT76_STATE_PM, &mphy->state))
 		queue_delayed_work(dev->mt76.wq, &dev->pm.ps_work,
-				   MT7615_PM_TIMEOUT);
+				   dev->pm.idle_timeout);
 }
 EXPORT_SYMBOL_GPL(mt7615_pm_power_save_sched);
 
@@ -1926,7 +1926,7 @@ void mt7615_pm_power_save_work(struct work_struct *work)
 
 	if (mt7615_firmware_own(dev))
 		queue_delayed_work(dev->mt76.wq, &dev->pm.ps_work,
-				   MT7615_PM_TIMEOUT);
+				   dev->pm.idle_timeout);
 }
 
 static void

drivers/net/wireless/mediatek/mt76/mt7615/mt7615.h

@@ -313,6 +313,7 @@ struct mt7615_dev {
 
 		struct delayed_work ps_work;
 		unsigned long last_activity;
+		unsigned long idle_timeout;
 	} pm;
 };