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2cb9cb0925
Align Linux FSYNC functionality to QNX non-safety by adding two non-safety public interfaces to the FSYNC Kernel Driver to stop and reconfigure FSYNC groups and their generators. Also removes individual nodes exposed for each fsync group and instead accepts group ID as a parameter to align with QNX functionality and allow configurability for default group The design of this feature is documented in Confluence: CAMERA/FSYNC Reconfiguration for Crosstraffic Cameras Jira CAMERASW-22038 Change-Id: I3570cd11f62f807464589677c449e899a49f98fc Signed-off-by: kevixie <kevixie@nvidia.com> (cherry picked from commit cca0c2364824b025daf2cabc393878907abe03e4) Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3196632 Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3202934 Reviewed-by: Shiva Dubey <sdubey@nvidia.com> Reviewed-by: Mohit Ingale <mohiti@nvidia.com> GVS: buildbot_gerritrpt <buildbot_gerritrpt@nvidia.com> Reviewed-by: Vincent Chung <vincentc@nvidia.com>
63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2023-2024, NVIDIA CORPORATION. All rights reserved.
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*/
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#ifndef __CAM_FSYNC_H__
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#define __CAM_FSYNC_H__
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#include <linux/ioctl.h>
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#include <linux/types.h>
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/**
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* @brief CamFsync start arguments
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*/
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struct cam_sync_start_args {
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/** @brief The group id of the fsync signal generators to start.
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* Valid range: [@ref MIN_GROUP_ID_DEFINED_IN_DT, @ref MAX_GROUP_ID_DEFINED_IN_DT]
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*/
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__u32 group_id;
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/** @brief The start time in tsc ticks */
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__u64 start_tsc_ticks;
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};
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/**
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* @brief Arguments for generator reconfiguration.
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*/
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struct cam_sync_gen_reconfig_args {
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/**
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* @brief Group ID of the generator to reconfigure.
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* Valid range: [@ref MIN_GROUP_ID_DEFINED_IN_DT, @ref MAX_GROUP_ID_DEFINED_IN_DT]
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*/
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__u32 group_id;
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/**
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* @brief ID of the generator within the group to reconfigure.
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* Valid range: [@ref MIN_GENERATOR_ID_DEFINED_IN_DT, @ref MAX_GENERATOR_ID_DEFINED_IN_DT]
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*/
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__u32 generator_id;
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/**
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* @brief The new frequency, in Hz.
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* Valid range: [> 0, 120]
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*/
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__u32 freqHz;
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/**
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* @brief The new duty cycle, in whole percent.
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* Valid range: [> 0, < 100]
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*/
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__u32 dutyCycle;
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/**
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* @brief The new relative offset, in milliseconds.
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* Valid range: [non-zero]
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*/
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__u32 offsetMs;
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};
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#define CAM_FSYNC_GRP_ABS_START_VAL \
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_IOW('T', 1, struct cam_sync_start_args)
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#define CAM_FSYNC_GRP_STOP \
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_IOW('T', 2, uint32_t)
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#define CAM_FSYNC_GEN_RECONFIGURE \
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_IOW('T', 3, struct cam_sync_gen_reconfig_args)
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#endif
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