/*
   * System Trace Module (STM) userspace interfaces
   * Copyright (c) 2014, Intel Corporation.
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms and conditions of the GNU General Public License,
   * version 2, as published by the Free Software Foundation.
   *
   * This program is distributed in the hope it will be useful, but WITHOUT
   * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
   * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
   * more details.
   *
   * 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>
  
  /**
   * 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[0];
  };
  
  #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 */