forked from Minki/linux
a0cdac5610
Instead of embedding pipelines in the vsp1_video objects allocate them on demand when they are needed. This fixes the streamon race condition where pipelines objects from different video nodes could be used for the same pipeline. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
128 lines
3.5 KiB
C
128 lines
3.5 KiB
C
/*
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* vsp1_pipe.h -- R-Car VSP1 Pipeline
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*
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* Copyright (C) 2013-2015 Renesas Electronics Corporation
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*
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* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#ifndef __VSP1_PIPE_H__
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#define __VSP1_PIPE_H__
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#include <linux/kref.h>
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#include <linux/list.h>
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#include <linux/spinlock.h>
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#include <linux/wait.h>
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#include <media/media-entity.h>
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struct vsp1_dl_list;
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struct vsp1_rwpf;
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/*
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* struct vsp1_format_info - VSP1 video format description
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* @mbus: media bus format code
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* @fourcc: V4L2 pixel format FCC identifier
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* @planes: number of planes
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* @bpp: bits per pixel
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* @hwfmt: VSP1 hardware format
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* @swap_yc: the Y and C components are swapped (Y comes before C)
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* @swap_uv: the U and V components are swapped (V comes before U)
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* @hsub: horizontal subsampling factor
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* @vsub: vertical subsampling factor
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* @alpha: has an alpha channel
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*/
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struct vsp1_format_info {
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u32 fourcc;
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unsigned int mbus;
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unsigned int hwfmt;
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unsigned int swap;
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unsigned int planes;
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unsigned int bpp[3];
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bool swap_yc;
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bool swap_uv;
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unsigned int hsub;
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unsigned int vsub;
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bool alpha;
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};
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enum vsp1_pipeline_state {
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VSP1_PIPELINE_STOPPED,
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VSP1_PIPELINE_RUNNING,
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VSP1_PIPELINE_STOPPING,
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};
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/*
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* struct vsp1_pipeline - A VSP1 hardware pipeline
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* @pipe: the media pipeline
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* @irqlock: protects the pipeline state
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* @state: current state
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* @wq: work queue to wait for state change completion
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* @frame_end: frame end interrupt handler
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* @lock: protects the pipeline use count and stream count
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* @kref: pipeline reference count
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* @stream_count: number of streaming video nodes
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* @buffers_ready: bitmask of RPFs and WPFs with at least one buffer available
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* @num_inputs: number of RPFs
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* @inputs: array of RPFs in the pipeline (indexed by RPF index)
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* @output: WPF at the output of the pipeline
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* @bru: BRU entity, if present
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* @lif: LIF entity, if present
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* @uds: UDS entity, if present
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* @uds_input: entity at the input of the UDS, if the UDS is present
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* @entities: list of entities in the pipeline
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* @dl: display list associated with the pipeline
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*/
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struct vsp1_pipeline {
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struct media_pipeline pipe;
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spinlock_t irqlock;
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enum vsp1_pipeline_state state;
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wait_queue_head_t wq;
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void (*frame_end)(struct vsp1_pipeline *pipe);
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struct mutex lock;
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struct kref kref;
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unsigned int stream_count;
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unsigned int buffers_ready;
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unsigned int num_inputs;
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struct vsp1_rwpf *inputs[VSP1_MAX_RPF];
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struct vsp1_rwpf *output;
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struct vsp1_entity *bru;
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struct vsp1_entity *lif;
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struct vsp1_entity *uds;
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struct vsp1_entity *uds_input;
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struct list_head entities;
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struct vsp1_dl_list *dl;
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};
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void vsp1_pipeline_reset(struct vsp1_pipeline *pipe);
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void vsp1_pipeline_init(struct vsp1_pipeline *pipe);
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void vsp1_pipeline_run(struct vsp1_pipeline *pipe);
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bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe);
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int vsp1_pipeline_stop(struct vsp1_pipeline *pipe);
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bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe);
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void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
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void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
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struct vsp1_entity *input,
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struct vsp1_dl_list *dl,
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unsigned int alpha);
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void vsp1_pipelines_suspend(struct vsp1_device *vsp1);
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void vsp1_pipelines_resume(struct vsp1_device *vsp1);
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const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc);
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#endif /* __VSP1_PIPE_H__ */
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