| Alexander Shishkin | 7bd1d40 | 2015-09-22 15:47:10 +0300 | [diff] [blame] | 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 | */ |
| 35 | struct 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 */ |