1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux <<
2 /* 1 /*
3 * System Trace Module (STM) userspace interfa 2 * System Trace Module (STM) userspace interfaces
4 * Copyright (c) 2014, Intel Corporation. 3 * Copyright (c) 2014, Intel Corporation.
5 * 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 *
6 * STM class implements generic infrastructure 14 * STM class implements generic infrastructure for System Trace Module devices
7 * as defined in MIPI STPv2 specification. 15 * as defined in MIPI STPv2 specification.
8 */ 16 */
9 17
10 #ifndef _UAPI_LINUX_STM_H 18 #ifndef _UAPI_LINUX_STM_H
11 #define _UAPI_LINUX_STM_H 19 #define _UAPI_LINUX_STM_H
12 20
13 #include <linux/types.h> 21 #include <linux/types.h>
14 22
15 /* Maximum allowed master and channel values * <<
16 #define STP_MASTER_MAX 0xffff <<
17 #define STP_CHANNEL_MAX 0xffff <<
18 <<
19 /** 23 /**
20 * struct stp_policy_id - identification for t 24 * struct stp_policy_id - identification for the STP policy
21 * @size: size of the structure includin 25 * @size: size of the structure including real id[] length
22 * @master: assigned master 26 * @master: assigned master
23 * @channel: first assigned channel 27 * @channel: first assigned channel
24 * @width: number of requested channels 28 * @width: number of requested channels
25 * @id: identification string 29 * @id: identification string
26 * 30 *
27 * User must calculate the total size of the s 31 * User must calculate the total size of the structure and put it into
28 * @size field, fill out the @id and desired @ 32 * @size field, fill out the @id and desired @width. In return, kernel
29 * fills out @master, @channel and @width. 33 * fills out @master, @channel and @width.
30 */ 34 */
31 struct stp_policy_id { 35 struct stp_policy_id {
32 __u32 size; 36 __u32 size;
33 __u16 master; 37 __u16 master;
34 __u16 channel; 38 __u16 channel;
35 __u16 width; 39 __u16 width;
36 /* padding */ 40 /* padding */
37 __u16 __reserved_0; 41 __u16 __reserved_0;
38 __u32 __reserved_1; 42 __u32 __reserved_1;
39 char id[]; !! 43 char id[0];
40 }; 44 };
41 45
42 #define STP_POLICY_ID_SET _IOWR('%', 0, 46 #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id)
43 #define STP_POLICY_ID_GET _IOR('%', 1, s 47 #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id)
44 #define STP_SET_OPTIONS _IOW('%', 2, _ 48 #define STP_SET_OPTIONS _IOW('%', 2, __u64)
45 49
46 #endif /* _UAPI_LINUX_STM_H */ 50 #endif /* _UAPI_LINUX_STM_H */
47 51
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