forked from Minki/linux
cbb7fa49c7
Some VSP instances have two blending units named BRU (Blend/ROP Unit) and BRS (Blend/ROP Sub unit). The BRS is a smaller version of the BRU with only two inputs, but otherwise offers similar features and offers the same register interface. The BRU and BRS can be used exchangeably in VSP pipelines (provided no more than two inputs are needed). Due to historical reasons, the VSP1 driver implements support for both the BRU and BRS through objects named vsp1_bru. The code uses the name BRU to refer to either the BRU or the BRS, except in a few places where noted explicitly. This creates confusion. In an effort to avoid confusion, rename the vsp1_bru object and the corresponding API to vsp1_brx, and use BRx to refer to blend unit instances regardless of their type. The names BRU and BRS are retained where reference to a particular blend unit type is needed, as well as in hardware registers to stay close to the datasheet. Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> Acked-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
178 lines
5.3 KiB
C
178 lines
5.3 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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* @fourcc: V4L2 pixel format FCC identifier
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* @mbus: media bus format code
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* @hwfmt: VSP1 hardware format
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* @swap: swap register control
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* @planes: number of planes
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* @bpp: bits per pixel
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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_partition_window - Partition window coordinates
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* @left: horizontal coordinate of the partition start in pixels relative to the
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* left edge of the image
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* @width: partition width in pixels
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*/
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struct vsp1_partition_window {
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unsigned int left;
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unsigned int width;
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};
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/*
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* struct vsp1_partition - A description of a slice for the partition algorithm
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* @rpf: The RPF partition window configuration
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* @uds_sink: The UDS input partition window configuration
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* @uds_source: The UDS output partition window configuration
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* @sru: The SRU partition window configuration
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* @wpf: The WPF partition window configuration
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*/
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struct vsp1_partition {
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struct vsp1_partition_window rpf;
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struct vsp1_partition_window uds_sink;
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struct vsp1_partition_window uds_source;
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struct vsp1_partition_window sru;
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struct vsp1_partition_window wpf;
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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: wait 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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* @sequence: frame sequence number
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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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* @brx: BRx entity, if present
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* @hgo: HGO entity, if present
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* @hgt: HGT 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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* @partitions: The number of partitions used to process one frame
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* @partition: The current partition for configuration to process
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* @part_table: The pre-calculated partitions used by 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, unsigned int completion);
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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 sequence;
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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 *brx;
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struct vsp1_entity *hgo;
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struct vsp1_entity *hgt;
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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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/*
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* The order of this list must be identical to the order of the entities
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* in the pipeline, as it is assumed by the partition algorithm that we
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* can walk this list in sequence.
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*/
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struct list_head entities;
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struct vsp1_dl_list *dl;
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unsigned int partitions;
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struct vsp1_partition *partition;
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struct vsp1_partition *part_table;
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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_dl_list *dl, unsigned int alpha);
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void vsp1_pipeline_propagate_partition(struct vsp1_pipeline *pipe,
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struct vsp1_partition *partition,
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unsigned int index,
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struct vsp1_partition_window *window);
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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(struct vsp1_device *vsp1,
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u32 fourcc);
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#endif /* __VSP1_PIPE_H__ */
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