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/*
* vsp1_pipe.h -- R-Car VSP1 Pipeline
*
* Copyright (C) 2013-2015 Renesas Electronics Corporation
*
* Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*/
#ifndef __VSP1_PIPE_H__
#define __VSP1_PIPE_H__
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <media/media-entity.h>
struct vsp1_rwpf;
enum vsp1_pipeline_state {
VSP1_PIPELINE_STOPPED,
VSP1_PIPELINE_RUNNING,
VSP1_PIPELINE_STOPPING,
};
/*
* struct vsp1_pipeline - A VSP1 hardware pipeline
* @pipe: the media pipeline
* @irqlock: protects the pipeline state
* @state: current state
* @wq: work queue to wait for state change completion
* @frame_end: frame end interrupt handler
* @lock: protects the pipeline use count and stream count
* @use_count: number of video nodes using the pipeline
* @stream_count: number of streaming video nodes
* @buffers_ready: bitmask of RPFs and WPFs with at least one buffer available
* @num_inputs: number of RPFs
* @inputs: array of RPFs in the pipeline
* @output: WPF at the output of the pipeline
* @bru: BRU entity, if present
* @lif: LIF entity, if present
* @uds: UDS entity, if present
* @uds_input: entity at the input of the UDS, if the UDS is present
* @entities: list of entities in the pipeline
*/
struct vsp1_pipeline {
struct media_pipeline pipe;
spinlock_t irqlock;
enum vsp1_pipeline_state state;
wait_queue_head_t wq;
void (*frame_end)(struct vsp1_pipeline *pipe);
struct mutex lock;
unsigned int use_count;
unsigned int stream_count;
unsigned int buffers_ready;
unsigned int num_inputs;
struct vsp1_rwpf *inputs[VSP1_MAX_RPF];
struct vsp1_rwpf *output;
struct vsp1_entity *bru;
struct vsp1_entity *lif;
struct vsp1_entity *uds;
struct vsp1_entity *uds_input;
struct list_head entities;
};
static inline struct vsp1_pipeline *to_vsp1_pipeline(struct media_entity *e)
{
if (likely(e->pipe))
return container_of(e->pipe, struct vsp1_pipeline, pipe);
else
return NULL;
}
void vsp1_pipeline_reset(struct vsp1_pipeline *pipe);
void vsp1_pipeline_init(struct vsp1_pipeline *pipe);
void vsp1_pipeline_run(struct vsp1_pipeline *pipe);
bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe);
int vsp1_pipeline_stop(struct vsp1_pipeline *pipe);
bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe);
void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
struct vsp1_entity *input,
unsigned int alpha);
void vsp1_pipelines_suspend(struct vsp1_device *vsp1);
void vsp1_pipelines_resume(struct vsp1_device *vsp1);
#endif /* __VSP1_PIPE_H__ */
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