1 files changed, 115 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
new file mode 100644
index 000000000000..583a89a34734
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
@@ -0,0 +1,115 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2021 MediaTek Inc. */
+
+#include "mt7921.h"
+#include "mcu.h"
+
+static int mt7921e_driver_own(struct mt7921_dev *dev)
+{
+	u32 reg = mt7921_reg_map_l1(dev, MT_TOP_LPCR_HOST_BAND0);
+
+	mt76_wr(dev, reg, MT_TOP_LPCR_HOST_DRV_OWN);
+	if (!mt76_poll_msec(dev, reg, MT_TOP_LPCR_HOST_FW_OWN,
+			    0, 500)) {
+		dev_err(dev->mt76.dev, "Timeout for driver own\n");
+		return -EIO;
+	}
+
+	return 0;
+}
+
+static int
+mt7921_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
+			int cmd, int *seq)
+{
+	struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+	enum mt76_mcuq_id txq = MT_MCUQ_WM;
+	int ret;
+
+	ret = mt7921_mcu_fill_message(mdev, skb, cmd, seq);
+	if (ret)
+		return ret;
+
+	if (cmd == MCU_CMD_FW_SCATTER)
+		txq = MT_MCUQ_FWDL;
+
+	return mt76_tx_queue_skb_raw(dev, mdev->q_mcu[txq], skb, 0);
+}
+
+int mt7921e_mcu_init(struct mt7921_dev *dev)
+{
+	static const struct mt76_mcu_ops mt7921_mcu_ops = {
+		.headroom = sizeof(struct mt7921_mcu_txd),
+		.mcu_skb_send_msg = mt7921_mcu_send_message,
+		.mcu_parse_response = mt7921_mcu_parse_response,
+		.mcu_restart = mt7921_mcu_restart,
+	};
+	int err;
+
+	dev->mt76.mcu_ops = &mt7921_mcu_ops;
+
+	err = mt7921e_driver_own(dev);
+	if (err)
+		return err;
+
+	err = mt7921_run_firmware(dev);
+
+	mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_FWDL], false);
+
+	return err;
+}
+
+int mt7921e_mcu_drv_pmctrl(struct mt7921_dev *dev)
+{
+	struct mt76_phy *mphy = &dev->mt76.phy;
+	struct mt76_connac_pm *pm = &dev->pm;
+	int i, err = 0;
+
+	for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
+		mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_CLR_OWN);
+		if (mt76_poll_msec(dev, MT_CONN_ON_LPCTL,
+				   PCIE_LPCR_HOST_OWN_SYNC, 0, 50))
+			break;
+	}
+
+	if (i == MT7921_DRV_OWN_RETRY_COUNT) {
+		dev_err(dev->mt76.dev, "driver own failed\n");
+		err = -EIO;
+		goto out;
+	}
+
+	mt7921_wpdma_reinit_cond(dev);
+	clear_bit(MT76_STATE_PM, &mphy->state);
+
+	pm->stats.last_wake_event = jiffies;
+	pm->stats.doze_time += pm->stats.last_wake_event -
+			       pm->stats.last_doze_event;
+out:
+	return err;
+}
+
+int mt7921e_mcu_fw_pmctrl(struct mt7921_dev *dev)
+{
+	struct mt76_phy *mphy = &dev->mt76.phy;
+	struct mt76_connac_pm *pm = &dev->pm;
+	int i, err = 0;
+
+	for (i = 0; i < MT7921_DRV_OWN_RETRY_COUNT; i++) {
+		mt76_wr(dev, MT_CONN_ON_LPCTL, PCIE_LPCR_HOST_SET_OWN);
+		if (mt76_poll_msec(dev, MT_CONN_ON_LPCTL,
+				   PCIE_LPCR_HOST_OWN_SYNC, 4, 50))
+			break;
+	}
+
+	if (i == MT7921_DRV_OWN_RETRY_COUNT) {
+		dev_err(dev->mt76.dev, "firmware own failed\n");
+		clear_bit(MT76_STATE_PM, &mphy->state);
+		err = -EIO;
+	}
+
+	pm->stats.last_doze_event = jiffies;
+	pm->stats.awake_time += pm->stats.last_doze_event -
+				pm->stats.last_wake_event;
+
+	return err;
+}