1 /* SPDX-License-Identifier: GPL-2.0+ */
2 /*
3  * Copyright (C) 2019-2020 Linaro Limited.
4  */
5 #ifndef _SCMI_AGENT_UCLASS_H
6 #define _SCMI_AGENT_UCLASS_H
7 
8 struct udevice;
9 struct scmi_msg;
10 struct scmi_channel;
11 
12 /**
13  * struct scmi_transport_ops - The functions that a SCMI transport layer must implement.
14  */
15 struct scmi_agent_ops {
16 	/*
17 	 * of_get_channel - Get SCMI channel from SCMI agent device tree node
18 	 *
19 	 * @dev:		SCMI protocol device using the transport
20 	 * @channel:		Output reference to SCMI channel upon success
21 	 * Return 0 upon success and a negative errno on failure
22 	 */
23 	int (*of_get_channel)(struct udevice *dev, struct scmi_channel **channel);
24 
25 	/*
26 	 * process_msg - Request transport to get the SCMI message processed
27 	 *
28 	 * @dev:		SCMI protocol device using the transport
29 	 * @msg:		SCMI message to be transmitted
30 	 */
31 	int (*process_msg)(struct udevice *dev, struct scmi_channel *channel,
32 			   struct scmi_msg *msg);
33 };
34 
35 #endif /* _SCMI_TRANSPORT_UCLASS_H */
36