mt76: add mt76_mcu_ops data structure for mcu related pointers

Introduce mt76_mcu_ops data structure to contain mcu related function
pointers. This is a preliminary patch to move mt76x02 usb mcu code in
mt76x02-usb module
Acked-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi@redhat.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>

drivers/net/wireless/mediatek/mt76/mt76.h

@@ -119,6 +119,12 @@ struct mt76_queue {
 	struct sk_buff *rx_head;
 };
 
+struct mt76_mcu_ops {
+	struct sk_buff *(*mcu_msg_alloc)(const void *data, int len);
+	int (*mcu_send_msg)(struct mt76_dev *dev, struct sk_buff *skb,
+			    int cmd, bool wait_resp);
+};
+
 struct mt76_queue_ops {
 	int (*init)(struct mt76_dev *dev);
 
@@ -336,6 +342,7 @@ struct mt76_dev {
 
 	const struct mt76_bus_ops *bus;
 	const struct mt76_driver_ops *drv;
+	const struct mt76_mcu_ops *mcu_ops;
 	void __iomem *regs;
 	struct device *dev;
 
@@ -436,6 +443,9 @@ struct mt76_rx_status {
 #define mt76_rmw(dev, ...)	(dev)->mt76.bus->rmw(&((dev)->mt76), __VA_ARGS__)
 #define mt76_wr_copy(dev, ...)	(dev)->mt76.bus->copy(&((dev)->mt76), __VA_ARGS__)
 
+#define mt76_mcu_msg_alloc(dev, ...)	(dev)->mt76.mcu_ops->mcu_msg_alloc(__VA_ARGS__)
+#define mt76_mcu_send_msg(dev, ...)	(dev)->mt76.mcu_ops->mcu_send_msg(&((dev)->mt76), __VA_ARGS__)
+
 #define mt76_set(dev, offset, val)	mt76_rmw(dev, offset, 0, val)
 #define mt76_clear(dev, offset, val)	mt76_rmw(dev, offset, val, 0)
 
@@ -643,5 +653,6 @@ int mt76u_mcu_send_msg(struct mt76_dev *dev, struct sk_buff *skb,
 void mt76u_mcu_fw_reset(struct mt76_dev *dev);
 int mt76u_mcu_init_rx(struct mt76_dev *dev);
 void mt76u_mcu_deinit(struct mt76_dev *dev);
+void mt76u_init_mcu_ops(struct mt76_dev *dev);
 
 #endif

drivers/net/wireless/mediatek/mt76/usb.c

@@ -836,6 +836,7 @@ int mt76u_init(struct mt76_dev *dev,
 	mutex_init(&usb->usb_ctrl_mtx);
 	dev->bus = &mt76u_ops;
 	dev->queue_ops = &usb_queue_ops;
+	mt76u_init_mcu_ops(dev);
 
 	return mt76u_set_endpoints(intf, usb);
 }

drivers/net/wireless/mediatek/mt76/usb_mcu.c

@@ -296,3 +296,13 @@ void mt76u_mcu_deinit(struct mt76_dev *dev)
 	mt76u_buf_free(&usb->mcu.res);
 }
 EXPORT_SYMBOL_GPL(mt76u_mcu_deinit);
+
+void mt76u_init_mcu_ops(struct mt76_dev *dev)
+{
+	static const struct mt76_mcu_ops mt76u_mcu_ops = {
+		.mcu_msg_alloc = mt76u_mcu_msg_alloc,
+		.mcu_send_msg = mt76u_mcu_send_msg,
+	};
+
+	dev->mcu_ops = &mt76u_mcu_ops;
+}