| /* 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 */ |