drivers/media/platform/vsp1/vsp1_pipe.h

   1 /*
   2  * vsp1_pipe.h  --  R-Car VSP1 Pipeline
   3  *
   4  * Copyright (C) 2013-2015 Renesas Electronics Corporation
   5  *
   6  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  */
  13 #ifndef __VSP1_PIPE_H__
  14 #define __VSP1_PIPE_H__
  15
  16 #include <linux/kref.h>
  17 #include <linux/list.h>
  18 #include <linux/spinlock.h>
  19 #include <linux/wait.h>
  20
  21 #include <media/media-entity.h>
  22
  23 struct vsp1_dl_list;
  24 struct vsp1_rwpf;
  25
  26 /*
  27  * struct vsp1_format_info - VSP1 video format description
  28  * @fourcc: V4L2 pixel format FCC identifier
  29  * @mbus: media bus format code
  30  * @hwfmt: VSP1 hardware format
  31  * @swap: swap register control
  32  * @planes: number of planes
  33  * @bpp: bits per pixel
  34  * @swap_yc: the Y and C components are swapped (Y comes before C)
  35  * @swap_uv: the U and V components are swapped (V comes before U)
  36  * @hsub: horizontal subsampling factor
  37  * @vsub: vertical subsampling factor
  38  * @alpha: has an alpha channel
  39  */
  40 struct vsp1_format_info {
  41         u32 fourcc;
  42         unsigned int mbus;
  43         unsigned int hwfmt;
  44         unsigned int swap;
  45         unsigned int planes;
  46         unsigned int bpp[3];
  47         bool swap_yc;
  48         bool swap_uv;
  49         unsigned int hsub;
  50         unsigned int vsub;
  51         bool alpha;
  52 };
  53
  54 enum vsp1_pipeline_state {
  55         VSP1_PIPELINE_STOPPED,
  56         VSP1_PIPELINE_RUNNING,
  57         VSP1_PIPELINE_STOPPING,
  58 };
  59
  60 /*
  61  * struct vsp1_partition_window - Partition window coordinates
  62  * @left: horizontal coordinate of the partition start in pixels relative to the
  63  *        left edge of the image
  64  * @width: partition width in pixels
  65  */
  66 struct vsp1_partition_window {
  67         unsigned int left;
  68         unsigned int width;
  69 };
  70
  71 /*
  72  * struct vsp1_partition - A description of a slice for the partition algorithm
  73  * @rpf: The RPF partition window configuration
  74  * @uds_sink: The UDS input partition window configuration
  75  * @uds_source: The UDS output partition window configuration
  76  * @sru: The SRU partition window configuration
  77  * @wpf: The WPF partition window configuration
  78  */
  79 struct vsp1_partition {
  80         struct vsp1_partition_window rpf;
  81         struct vsp1_partition_window uds_sink;
  82         struct vsp1_partition_window uds_source;
  83         struct vsp1_partition_window sru;
  84         struct vsp1_partition_window wpf;
  85 };
  86
  87 /*
  88  * struct vsp1_pipeline - A VSP1 hardware pipeline
  89  * @pipe: the media pipeline
  90  * @irqlock: protects the pipeline state
  91  * @state: current state
  92  * @wq: wait queue to wait for state change completion
  93  * @frame_end: frame end interrupt handler
  94  * @lock: protects the pipeline use count and stream count
  95  * @kref: pipeline reference count
  96  * @stream_count: number of streaming video nodes
  97  * @buffers_ready: bitmask of RPFs and WPFs with at least one buffer available
  98  * @sequence: frame sequence number
  99  * @num_inputs: number of RPFs
 100  * @inputs: array of RPFs in the pipeline (indexed by RPF index)
 101  * @output: WPF at the output of the pipeline
 102  * @bru: BRU entity, if present
 103  * @hgo: HGO entity, if present
 104  * @hgt: HGT entity, if present
 105  * @lif: LIF entity, if present
 106  * @uds: UDS entity, if present
 107  * @uds_input: entity at the input of the UDS, if the UDS is present
 108  * @entities: list of entities in the pipeline
 109  * @dl: display list associated with the pipeline
 110  * @partitions: The number of partitions used to process one frame
 111  * @partition: The current partition for configuration to process
 112  * @part_table: The pre-calculated partitions used by the pipeline
 113  */
 114 struct vsp1_pipeline {
 115         struct media_pipeline pipe;
 116
 117         spinlock_t irqlock;
 118         enum vsp1_pipeline_state state;
 119         wait_queue_head_t wq;
 120
 121         void (*frame_end)(struct vsp1_pipeline *pipe, bool completed);
 122
 123         struct mutex lock;
 124         struct kref kref;
 125         unsigned int stream_count;
 126         unsigned int buffers_ready;
 127         unsigned int sequence;
 128
 129         unsigned int num_inputs;
 130         struct vsp1_rwpf *inputs[VSP1_MAX_RPF];
 131         struct vsp1_rwpf *output;
 132         struct vsp1_entity *bru;
 133         struct vsp1_entity *hgo;
 134         struct vsp1_entity *hgt;
 135         struct vsp1_entity *lif;
 136         struct vsp1_entity *uds;
 137         struct vsp1_entity *uds_input;
 138
 139         /*
 140          * The order of this list must be identical to the order of the entities
 141          * in the pipeline, as it is assumed by the partition algorithm that we
 142          * can walk this list in sequence.
 143          */
 144         struct list_head entities;
 145
 146         struct vsp1_dl_list *dl;
 147
 148         unsigned int partitions;
 149         struct vsp1_partition *partition;
 150         struct vsp1_partition *part_table;
 151 };
 152
 153 void vsp1_pipeline_reset(struct vsp1_pipeline *pipe);
 154 void vsp1_pipeline_init(struct vsp1_pipeline *pipe);
 155
 156 void vsp1_pipeline_run(struct vsp1_pipeline *pipe);
 157 bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe);
 158 int vsp1_pipeline_stop(struct vsp1_pipeline *pipe);
 159 bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe);
 160
 161 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
 162
 163 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
 164                                    struct vsp1_dl_list *dl, unsigned int alpha);
 165
 166 void vsp1_pipeline_propagate_partition(struct vsp1_pipeline *pipe,
 167                                        struct vsp1_partition *partition,
 168                                        unsigned int index,
 169                                        struct vsp1_partition_window *window);
 170
 171 void vsp1_pipelines_suspend(struct vsp1_device *vsp1);
 172 void vsp1_pipelines_resume(struct vsp1_device *vsp1);
 173
 174 const struct vsp1_format_info *vsp1_get_format_info(struct vsp1_device *vsp1,
 175                                                     u32 fourcc);
 176
 177 #endif /* __VSP1_PIPE_H__ */