1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 2 /* 3 * System Trace Module (STM) userspace interfaces 4 * Copyright (c) 2014, Intel Corporation. 5 * 6 * STM class implements generic infrastructure for System Trace Module devices 7 * as defined in MIPI STPv2 specification. 8 */ 9 10 #ifndef _UAPI_LINUX_STM_H 11 #define _UAPI_LINUX_STM_H 12 13 #include <linux/types.h> 14 15 /** 16 * struct stp_policy_id - identification for the STP policy 17 * @size: size of the structure including real id[] length 18 * @master: assigned master 19 * @channel: first assigned channel 20 * @width: number of requested channels 21 * @id: identification string 22 * 23 * User must calculate the total size of the structure and put it into 24 * @size field, fill out the @id and desired @width. In return, kernel 25 * fills out @master, @channel and @width. 26 */ 27 struct stp_policy_id { 28 __u32 size; 29 __u16 master; 30 __u16 channel; 31 __u16 width; 32 /* padding */ 33 __u16 __reserved_0; 34 __u32 __reserved_1; 35 char id[0]; 36 }; 37 38 #define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id) 39 #define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id) 40 #define STP_SET_OPTIONS _IOW('%', 2, __u64) 41 42 #endif /* _UAPI_LINUX_STM_H */ 43