drivers/media/platform/vsp1/vsp1_pipe.h

   1 /* SPDX-License-Identifier: GPL-2.0+ */
   2 /*
   3  * vsp1_pipe.h  --  R-Car VSP1 Pipeline
   4  *
   5  * Copyright (C) 2013-2015 Renesas Electronics Corporation
   6  *
   7  * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
   8  */
   9 #ifndef __VSP1_PIPE_H__
  10 #define __VSP1_PIPE_H__
  11
  12 #include <linux/kref.h>
  13 #include <linux/list.h>
  14 #include <linux/spinlock.h>
  15 #include <linux/wait.h>
  16
  17 #include <media/media-entity.h>
  18
  19 struct vsp1_dl_list;
  20 struct vsp1_rwpf;
  21
  22 /*
  23  * struct vsp1_format_info - VSP1 video format description
  24  * @fourcc: V4L2 pixel format FCC identifier
  25  * @mbus: media bus format code
  26  * @hwfmt: VSP1 hardware format
  27  * @swap: swap register control
  28  * @planes: number of planes
  29  * @bpp: bits per pixel
  30  * @swap_yc: the Y and C components are swapped (Y comes before C)
  31  * @swap_uv: the U and V components are swapped (V comes before U)
  32  * @hsub: horizontal subsampling factor
  33  * @vsub: vertical subsampling factor
  34  * @alpha: has an alpha channel
  35  */
  36 struct vsp1_format_info {
  37         u32 fourcc;
  38         unsigned int mbus;
  39         unsigned int hwfmt;
  40         unsigned int swap;
  41         unsigned int planes;
  42         unsigned int bpp[3];
  43         bool swap_yc;
  44         bool swap_uv;
  45         unsigned int hsub;
  46         unsigned int vsub;
  47         bool alpha;
  48 };
  49
  50 enum vsp1_pipeline_state {
  51         VSP1_PIPELINE_STOPPED,
  52         VSP1_PIPELINE_RUNNING,
  53         VSP1_PIPELINE_STOPPING,
  54 };
  55
  56 /*
  57  * struct vsp1_partition_window - Partition window coordinates
  58  * @left: horizontal coordinate of the partition start in pixels relative to the
  59  *        left edge of the image
  60  * @width: partition width in pixels
  61  */
  62 struct vsp1_partition_window {
  63         unsigned int left;
  64         unsigned int width;
  65 };
  66
  67 /*
  68  * struct vsp1_partition - A description of a slice for the partition algorithm
  69  * @rpf: The RPF partition window configuration
  70  * @uds_sink: The UDS input partition window configuration
  71  * @uds_source: The UDS output partition window configuration
  72  * @sru: The SRU partition window configuration
  73  * @wpf: The WPF partition window configuration
  74  */
  75 struct vsp1_partition {
  76         struct vsp1_partition_window rpf;
  77         struct vsp1_partition_window uds_sink;
  78         struct vsp1_partition_window uds_source;
  79         struct vsp1_partition_window sru;
  80         struct vsp1_partition_window wpf;
  81 };
  82
  83 /*
  84  * struct vsp1_pipeline - A VSP1 hardware pipeline
  85  * @pipe: the media pipeline
  86  * @irqlock: protects the pipeline state
  87  * @state: current state
  88  * @wq: wait queue to wait for state change completion
  89  * @frame_end: frame end interrupt handler
  90  * @lock: protects the pipeline use count and stream count
  91  * @kref: pipeline reference count
  92  * @stream_count: number of streaming video nodes
  93  * @buffers_ready: bitmask of RPFs and WPFs with at least one buffer available
  94  * @sequence: frame sequence number
  95  * @num_inputs: number of RPFs
  96  * @inputs: array of RPFs in the pipeline (indexed by RPF index)
  97  * @output: WPF at the output of the pipeline
  98  * @brx: BRx entity, if present
  99  * @hgo: HGO entity, if present
 100  * @hgt: HGT entity, if present
 101  * @lif: LIF entity, if present
 102  * @uds: UDS entity, if present
 103  * @uds_input: entity at the input of the UDS, if the UDS is present
 104  * @entities: list of entities in the pipeline
 105  * @stream_config: cached stream configuration for video pipelines
 106  * @configured: when false the @stream_config shall be written to the hardware
 107  * @interlaced: True when the pipeline is configured in interlaced mode
 108  * @partitions: The number of partitions used to process one frame
 109  * @partition: The current partition for configuration to process
 110  * @part_table: The pre-calculated partitions used by the pipeline
 111  */
 112 struct vsp1_pipeline {
 113         struct media_pipeline pipe;
 114
 115         spinlock_t irqlock;
 116         enum vsp1_pipeline_state state;
 117         wait_queue_head_t wq;
 118
 119         void (*frame_end)(struct vsp1_pipeline *pipe, unsigned int completion);
 120
 121         struct mutex lock;
 122         struct kref kref;
 123         unsigned int stream_count;
 124         unsigned int buffers_ready;
 125         unsigned int sequence;
 126
 127         unsigned int num_inputs;
 128         struct vsp1_rwpf *inputs[VSP1_MAX_RPF];
 129         struct vsp1_rwpf *output;
 130         struct vsp1_entity *brx;
 131         struct vsp1_entity *hgo;
 132         struct vsp1_entity *hgt;
 133         struct vsp1_entity *lif;
 134         struct vsp1_entity *uds;
 135         struct vsp1_entity *uds_input;
 136
 137         /*
 138          * The order of this list must be identical to the order of the entities
 139          * in the pipeline, as it is assumed by the partition algorithm that we
 140          * can walk this list in sequence.
 141          */
 142         struct list_head entities;
 143
 144         struct vsp1_dl_body *stream_config;
 145         bool configured;
 146         bool interlaced;
 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_body *dlb,
 165                                    unsigned int alpha);
 166
 167 void vsp1_pipeline_propagate_partition(struct vsp1_pipeline *pipe,
 168                                        struct vsp1_partition *partition,
 169                                        unsigned int index,
 170                                        struct vsp1_partition_window *window);
 171
 172 const struct vsp1_format_info *vsp1_get_format_info(struct vsp1_device *vsp1,
 173                                                     u32 fourcc);
 174
 175 #endif /* __VSP1_PIPE_H__ */