1 files changed, 63 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 0000000000..4cf1f2f0f9
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mcu.c
@@ -0,0 +1,63 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2021 MediaTek Inc. */
+
+#include "mt7921.h"
+#include "mcu.h"
+
+int mt7921e_driver_own(struct mt792x_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 mt792x_dev *dev = container_of(mdev, struct mt792x_dev, mt76);
+	enum mt76_mcuq_id txq = MT_MCUQ_WM;
+	int ret;
+
+	ret = mt76_connac2_mcu_fill_message(mdev, skb, cmd, seq);
+	if (ret)
+		return ret;
+
+	mdev->mcu.timeout = 3 * HZ;
+
+	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 mt792x_dev *dev)
+{
+	static const struct mt76_mcu_ops mt7921_mcu_ops = {
+		.headroom = sizeof(struct mt76_connac2_mcu_txd),
+		.mcu_skb_send_msg = mt7921_mcu_send_message,
+		.mcu_parse_response = mt7921_mcu_parse_response,
+	};
+	int err;
+
+	dev->mt76.mcu_ops = &mt7921_mcu_ops;
+
+	err = mt7921e_driver_own(dev);
+	if (err)
+		return err;
+
+	mt76_rmw_field(dev, MT_PCIE_MAC_PM, MT_PCIE_MAC_PM_L0S_DIS, 1);
+
+	err = mt7921_run_firmware(dev);
+
+	mt76_queue_tx_cleanup(dev, dev->mt76.q_mcu[MT_MCUQ_FWDL], false);
+
+	return err;
+}