1/*
2 * System Trace Module (STM) userspace interfaces
3 * Copyright (c) 2014, Intel Corporation.
4 *
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms and conditions of the GNU General Public License,
7 * version 2, as published by the Free Software Foundation.
8 *
9 * This program is distributed in the hope it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12 * more details.
13 *
14 * STM class implements generic infrastructure for  System Trace Module devices
15 * as defined in MIPI STPv2 specification.
16 */
17
18#ifndef _UAPI_LINUX_STM_H
19#define _UAPI_LINUX_STM_H
20
21#include <linux/types.h>
22
23/**
24 * struct stp_policy_id - identification for the STP policy
25 * @size:	size of the structure including real id[] length
26 * @master:	assigned master
27 * @channel:	first assigned channel
28 * @width:	number of requested channels
29 * @id:		identification string
30 *
31 * User must calculate the total size of the structure and put it into
32 * @size field, fill out the @id and desired @width. In return, kernel
33 * fills out @master, @channel and @width.
34 */
35struct stp_policy_id {
36	__u32		size;
37	__u16		master;
38	__u16		channel;
39	__u16		width;
40	/* padding */
41	__u16		__reserved_0;
42	__u32		__reserved_1;
43	char		id[0];
44};
45
46#define STP_POLICY_ID_SET	_IOWR('%', 0, struct stp_policy_id)
47#define STP_POLICY_ID_GET	_IOR('%', 1, struct stp_policy_id)
48#define STP_SET_OPTIONS		_IOW('%', 2, __u64)
49
50#endif /* _UAPI_LINUX_STM_H */
51