mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-31 00:17:44 +00:00
4f0c7c6a12
To allow for more flexible testing of the stm class, make it possible to specify the ranges of masters and channels that the dummy_stm devices cover. This is done via module parameters. Signed-off-by: Alexander Shishkin <alexander.shishkin@linux.intel.com>
46 lines
1.3 KiB
C
46 lines
1.3 KiB
C
/* 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[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 */
|