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46 lines
1.3 KiB
46 lines
1.3 KiB
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ |
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/* |
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* System Trace Module (STM) userspace interfaces |
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* Copyright (c) 2014, Intel Corporation. |
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* |
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* STM class implements generic infrastructure for System Trace Module devices |
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* as defined in MIPI STPv2 specification. |
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*/ |
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#ifndef _UAPI_LINUX_STM_H |
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#define _UAPI_LINUX_STM_H |
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#include <linux/types.h> |
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/* Maximum allowed master and channel values */ |
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#define STP_MASTER_MAX 0xffff |
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#define STP_CHANNEL_MAX 0xffff |
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/** |
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* struct stp_policy_id - identification for the STP policy |
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* @size: size of the structure including real id[] length |
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* @master: assigned master |
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* @channel: first assigned channel |
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* @width: number of requested channels |
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* @id: identification string |
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* |
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* User must calculate the total size of the structure and put it into |
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* @size field, fill out the @id and desired @width. In return, kernel |
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* fills out @master, @channel and @width. |
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*/ |
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struct stp_policy_id { |
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__u32 size; |
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__u16 master; |
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__u16 channel; |
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__u16 width; |
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/* padding */ |
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__u16 __reserved_0; |
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__u32 __reserved_1; |
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char id[0]; |
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}; |
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#define STP_POLICY_ID_SET _IOWR('%', 0, struct stp_policy_id) |
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#define STP_POLICY_ID_GET _IOR('%', 1, struct stp_policy_id) |
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#define STP_SET_OPTIONS _IOW('%', 2, __u64) |
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#endif /* _UAPI_LINUX_STM_H */
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