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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */2/*3 * System Trace Module (STM) userspace interfaces4 * Copyright (c) 2014, Intel Corporation.5 *6 * STM class implements generic infrastructure for System Trace Module devices7 * as defined in MIPI STPv2 specification.8 */9 10#ifndef _UAPI_LINUX_STM_H11#define _UAPI_LINUX_STM_H12 13#include <linux/types.h>14 15/* Maximum allowed master and channel values */16#define STP_MASTER_MAX 0xffff17#define STP_CHANNEL_MAX 0xffff18 19/**20 * struct stp_policy_id - identification for the STP policy21 * @size: size of the structure including real id[] length22 * @master: assigned master23 * @channel: first assigned channel24 * @width: number of requested channels25 * @id: identification string26 *27 * User must calculate the total size of the structure and put it into28 * @size field, fill out the @id and desired @width. In return, kernel29 * fills out @master, @channel and @width.30 */31struct stp_policy_id {32 __u32 size;33 __u16 master;34 __u16 channel;35 __u16 width;36 /* padding */37 __u16 __reserved_0;38 __u32 __reserved_1;39 char id[];40};41 42#define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id)43#define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id)44#define STP_SET_OPTIONS _IOW('%', 2, __u64)45 46#endif /* _UAPI_LINUX_STM_H */47