1 files changed, 101 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c b/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c
new file mode 100644
index 000000000..98bf2f6ae
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7615/usb_mcu.c
@@ -0,0 +1,101 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Copyright (C) 2019 MediaTek Inc.
+ *
+ * Author: Felix Fietkau <nbd@nbd.name>
+ *	   Lorenzo Bianconi <lorenzo@kernel.org>
+ *	   Sean Wang <sean.wang@mediatek.com>
+ */
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+#include "mt7615.h"
+#include "mac.h"
+#include "mcu.h"
+#include "regs.h"
+
+static int
+mt7663u_mcu_send_message(struct mt76_dev *mdev, struct sk_buff *skb,
+			 int cmd, int *seq)
+{
+	struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76);
+	int ret, ep, len, pad;
+
+	mt7615_mcu_fill_msg(dev, skb, cmd, seq);
+	if (cmd != MCU_CMD(FW_SCATTER))
+		ep = MT_EP_OUT_INBAND_CMD;
+	else
+		ep = MT_EP_OUT_AC_BE;
+
+	len = skb->len;
+	put_unaligned_le32(len, skb_push(skb, sizeof(len)));
+	pad = round_up(skb->len, 4) + 4 - skb->len;
+	ret = mt76_skb_adjust_pad(skb, pad);
+	if (ret < 0)
+		goto out;
+
+	ret = mt76u_bulk_msg(&dev->mt76, skb->data, skb->len, NULL,
+			     1000, ep);
+
+out:
+	dev_kfree_skb(skb);
+
+	return ret;
+}
+
+int mt7663u_mcu_power_on(struct mt7615_dev *dev)
+{
+	int ret;
+
+	ret = mt76u_vendor_request(&dev->mt76, MT_VEND_POWER_ON,
+				   USB_DIR_OUT | USB_TYPE_VENDOR,
+				   0x0, 0x1, NULL, 0);
+	if (ret)
+		return ret;
+
+	if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,
+			    MT_TOP_MISC2_FW_PWR_ON,
+			    FW_STATE_PWR_ON << 1, 500)) {
+		dev_err(dev->mt76.dev, "Timeout for power on\n");
+		ret = -EIO;
+	}
+
+	return 0;
+}
+
+int mt7663u_mcu_init(struct mt7615_dev *dev)
+{
+	static const struct mt76_mcu_ops mt7663u_mcu_ops = {
+		.headroom = MT_USB_HDR_SIZE + sizeof(struct mt7615_mcu_txd),
+		.tailroom = MT_USB_TAIL_SIZE,
+		.mcu_skb_send_msg = mt7663u_mcu_send_message,
+		.mcu_parse_response = mt7615_mcu_parse_response,
+		.mcu_restart = mt7615_mcu_restart,
+	};
+	int ret;
+
+	dev->mt76.mcu_ops = &mt7663u_mcu_ops,
+
+	mt76_set(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+	if (test_and_clear_bit(MT76_STATE_POWER_OFF, &dev->mphy.state)) {
+		ret = mt7615_mcu_restart(&dev->mt76);
+		if (ret)
+			return ret;
+
+		if (!mt76_poll_msec(dev, MT_CONN_ON_MISC,
+				    MT_TOP_MISC2_FW_PWR_ON, 0, 500))
+			return -EIO;
+
+		ret = mt7663u_mcu_power_on(dev);
+		if (ret)
+			return ret;
+	}
+
+	ret = __mt7663_load_firmware(dev);
+	if (ret)
+		return ret;
+
+	mt76_clear(dev, MT_UDMA_TX_QSEL, MT_FW_DL_EN);
+	set_bit(MT76_STATE_MCU_RUNNING, &dev->mphy.state);
+
+	return 0;
+}