[][MAC80211][Change MT76 Makefile and add bersa support]

[Description]
Change MT76 Makefile and add bersa support

[Release-log]
N/A

Change-Id: Iecb0e9968c8e212a6ab92698c84d2e3a56dbd65b
Reviewed-on: https://gerrit.mediatek.inc/c/openwrt/feeds/mtk_openwrt_feeds/+/5809192
diff --git a/autobuild_mac80211_release/mt7986_bersa_mac80211/package/kernel/mt76/src/mt76_connac_mac.c b/autobuild_mac80211_release/mt7986_bersa_mac80211/package/kernel/mt76/src/mt76_connac_mac.c
new file mode 100644
index 0000000..306e9ea
--- /dev/null
+++ b/autobuild_mac80211_release/mt7986_bersa_mac80211/package/kernel/mt76/src/mt76_connac_mac.c
@@ -0,0 +1,117 @@
+// 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 (mt76_is_usb(dev))
+		return 0;
+
+	cancel_delayed_work_sync(&pm->ps_work);
+	if (!test_bit(MT76_STATE_PM, &phy->state))
+		return 0;
+
+	if (pm->suspended)
+		return 0;
+
+	queue_work(dev->wq, &pm->wake_work);
+	if (!wait_event_timeout(pm->wait,
+				!test_bit(MT76_STATE_PM, &phy->state),
+				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_usb(dev))
+		return;
+
+	if (!pm->enable)
+		return;
+
+	if (pm->suspended)
+		return;
+
+	pm->last_activity = jiffies;
+
+	if (!test_bit(MT76_STATE_PM, &phy->state)) {
+		cancel_delayed_work(&phy->mac_work);
+		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);