| /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ | |
| /* | |
| * System Trace Module (STM) userspace interfaces | |
| * Copyright (c) 2014, Intel Corporation. | |
| * | |
| * STM class implements generic infrastructure for System Trace Module devices | |
| * as defined in MIPI STPv2 specification. | |
| */ | |
| #ifndef _UAPI_LINUX_STM_H | |
| #define _UAPI_LINUX_STM_H | |
| #include <linux/types.h> | |
| /* Maximum allowed master and channel values */ | |
| #define STP_MASTER_MAX 0xffff | |
| #define STP_CHANNEL_MAX 0xffff | |
| /** | |
| * struct stp_policy_id - identification for the STP policy | |
| * @size: size of the structure including real id[] length | |
| * @master: assigned master | |
| * @channel: first assigned channel | |
| * @width: number of requested channels | |
| * @id: identification string | |
| * | |
| * User must calculate the total size of the structure and put it into | |
| * @size field, fill out the @id and desired @width. In return, kernel | |
| * fills out @master, @channel and @width. | |
| */ | |
| struct stp_policy_id { | |
| __u32 size; | |
| __u16 master; | |
| __u16 channel; | |
| __u16 width; | |
| /* padding */ | |
| __u16 __reserved_0; | |
| __u32 __reserved_1; | |
| char id[]; | |
| }; | |
| #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id) | |
| #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id) | |
| #define STP_SET_OPTIONS _IOW('%', 2, __u64) | |
| #endif /* _UAPI_LINUX_STM_H */ |