mt76: mt76_connac: move pm utility routines in mt76_connac_lib module

Move power_save common code shared between mt7663 and mt7921 in
mt76_connac module

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

1 files changed, 119 insertions, 0 deletions

diff --git a/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
new file mode 100644
index 000000000000..c5f5037f5757
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt76_connac_mac.c
@@ -0,0 +1,119 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2020 MediaTek Inc. */
+
+#include "mt76_connac.h"
+
+int mt76_connac_pm_wake(struct mt76_phy *phy, struct mt76_connac_pm *pm)
+{
+	struct mt76_dev *dev = phy->dev;
+
+	if (!pm->enable)
+		return 0;
+
+	if (!mt76_is_mmio(dev))
+		return 0;
+
+	if (!test_bit(MT76_STATE_PM, &phy->state))
+		return 0;
+
+	if (test_bit(MT76_HW_SCANNING, &phy->state) ||
+	    test_bit(MT76_HW_SCHED_SCANNING, &phy->state))
+		return 0;
+
+	if (queue_work(dev->wq, &pm->wake_work))
+		reinit_completion(&pm->wake_cmpl);
+
+	if (!wait_for_completion_timeout(&pm->wake_cmpl, 3 * HZ)) {
+		ieee80211_wake_queues(phy->hw);
+		return -ETIMEDOUT;
+	}
+
+	return 0;
+}
+EXPORT_SYMBOL_GPL(mt76_connac_pm_wake);
+
+void mt76_connac_power_save_sched(struct mt76_phy *phy,
+				  struct mt76_connac_pm *pm)
+{
+	struct mt76_dev *dev = phy->dev;
+
+	if (!mt76_is_mmio(dev))
+		return;
+
+	if (!pm->enable || !test_bit(MT76_STATE_RUNNING, &phy->state))
+		return;
+
+	pm->last_activity = jiffies;
+
+	if (test_bit(MT76_HW_SCANNING, &phy->state) ||
+	    test_bit(MT76_HW_SCHED_SCANNING, &phy->state))
+		return;
+
+	if (!test_bit(MT76_STATE_PM, &phy->state))
+		queue_delayed_work(dev->wq, &pm->ps_work, pm->idle_timeout);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_power_save_sched);
+
+void mt76_connac_free_pending_tx_skbs(struct mt76_connac_pm *pm,
+				      struct mt76_wcid *wcid)
+{
+	int i;
+
+	spin_lock_bh(&pm->txq_lock);
+	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+		if (wcid && pm->tx_q[i].wcid != wcid)
+			continue;
+
+		dev_kfree_skb(pm->tx_q[i].skb);
+		pm->tx_q[i].skb = NULL;
+	}
+	spin_unlock_bh(&pm->txq_lock);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_free_pending_tx_skbs);
+
+void mt76_connac_pm_queue_skb(struct ieee80211_hw *hw,
+			      struct mt76_connac_pm *pm,
+			      struct mt76_wcid *wcid,
+			      struct sk_buff *skb)
+{
+	int qid = skb_get_queue_mapping(skb);
+	struct mt76_phy *phy = hw->priv;
+
+	spin_lock_bh(&pm->txq_lock);
+	if (!pm->tx_q[qid].skb) {
+		ieee80211_stop_queues(hw);
+		pm->tx_q[qid].wcid = wcid;
+		pm->tx_q[qid].skb = skb;
+		queue_work(phy->dev->wq, &pm->wake_work);
+	} else {
+		dev_kfree_skb(skb);
+	}
+	spin_unlock_bh(&pm->txq_lock);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_pm_queue_skb);
+
+void mt76_connac_pm_dequeue_skbs(struct mt76_phy *phy,
+				 struct mt76_connac_pm *pm)
+{
+	int i;
+
+	spin_lock_bh(&pm->txq_lock);
+	for (i = 0; i < IEEE80211_NUM_ACS; i++) {
+		struct mt76_wcid *wcid = pm->tx_q[i].wcid;
+		struct ieee80211_sta *sta = NULL;
+
+		if (!pm->tx_q[i].skb)
+			continue;
+
+		if (wcid && wcid->sta)
+			sta = container_of((void *)wcid, struct ieee80211_sta,
+					   drv_priv);
+
+		mt76_tx(phy, sta, wcid, pm->tx_q[i].skb);
+		pm->tx_q[i].skb = NULL;
+	}
+	spin_unlock_bh(&pm->txq_lock);
+
+	mt76_worker_schedule(&phy->dev->tx_worker);
+}
+EXPORT_SYMBOL_GPL(mt76_connac_pm_dequeue_skbs);