drivers/media/platform/vsp1/vsp1_entity.h

   1 /*
   2  * vsp1_entity.h  --  R-Car VSP1 Base Entity
   3  *
   4  * Copyright (C) 2013-2014 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_ENTITY_H__
  14 #define __VSP1_ENTITY_H__
  15
  16 #include <linux/list.h>
  17 #include <linux/mutex.h>
  18
  19 #include <media/v4l2-subdev.h>
  20
  21 struct vsp1_device;
  22 struct vsp1_dl_list;
  23 struct vsp1_pipeline;
  24
  25 enum vsp1_entity_type {
  26         VSP1_ENTITY_BRU,
  27         VSP1_ENTITY_CLU,
  28         VSP1_ENTITY_HSI,
  29         VSP1_ENTITY_HST,
  30         VSP1_ENTITY_LIF,
  31         VSP1_ENTITY_LUT,
  32         VSP1_ENTITY_RPF,
  33         VSP1_ENTITY_SRU,
  34         VSP1_ENTITY_UDS,
  35         VSP1_ENTITY_WPF,
  36 };
  37
  38 /**
  39  * enum vsp1_entity_params - Entity configuration parameters class
  40  * @VSP1_ENTITY_PARAMS_INIT - Initial parameters
  41  * @VSP1_ENTITY_PARAMS_PARTITION - Per-image partition parameters
  42  * @VSP1_ENTITY_PARAMS_RUNTIME - Runtime-configurable parameters
  43  */
  44 enum vsp1_entity_params {
  45         VSP1_ENTITY_PARAMS_INIT,
  46         VSP1_ENTITY_PARAMS_PARTITION,
  47         VSP1_ENTITY_PARAMS_RUNTIME,
  48 };
  49
  50 #define VSP1_ENTITY_MAX_INPUTS          5       /* For the BRU */
  51
  52 /*
  53  * struct vsp1_route - Entity routing configuration
  54  * @type: Entity type this routing entry is associated with
  55  * @index: Entity index this routing entry is associated with
  56  * @reg: Output routing configuration register
  57  * @inputs: Target node value for each input
  58  * @output: Target node value for entity output
  59  *
  60  * Each $vsp1_route entry describes routing configuration for the entity
  61  * specified by the entry's @type and @index. @reg indicates the register that
  62  * holds output routing configuration for the entity, and the @inputs array
  63  * store the target node value for each input of the entity. The @output field
  64  * stores the target node value of the entity output when used as a source for
  65  * histogram generation.
  66  */
  67 struct vsp1_route {
  68         enum vsp1_entity_type type;
  69         unsigned int index;
  70         unsigned int reg;
  71         unsigned int inputs[VSP1_ENTITY_MAX_INPUTS];
  72         unsigned int output;
  73 };
  74
  75 /**
  76  * struct vsp1_entity_operations - Entity operations
  77  * @destroy:    Destroy the entity.
  78  * @configure:  Setup the hardware based on the entity state (pipeline, formats,
  79  *              selection rectangles, ...)
  80  * @max_width:  Return the max supported width of data that the entity can
  81  *              process in a single operation.
  82  */
  83 struct vsp1_entity_operations {
  84         void (*destroy)(struct vsp1_entity *);
  85         void (*configure)(struct vsp1_entity *, struct vsp1_pipeline *,
  86                           struct vsp1_dl_list *, enum vsp1_entity_params);
  87         unsigned int (*max_width)(struct vsp1_entity *, struct vsp1_pipeline *);
  88 };
  89
  90 struct vsp1_entity {
  91         struct vsp1_device *vsp1;
  92
  93         const struct vsp1_entity_operations *ops;
  94
  95         enum vsp1_entity_type type;
  96         unsigned int index;
  97         const struct vsp1_route *route;
  98
  99         struct list_head list_dev;
 100         struct list_head list_pipe;
 101
 102         struct media_pad *pads;
 103         unsigned int source_pad;
 104
 105         struct media_entity *sink;
 106         unsigned int sink_pad;
 107
 108         struct v4l2_subdev subdev;
 109         struct v4l2_subdev_pad_config *config;
 110
 111         struct mutex lock;      /* Protects the pad config */
 112 };
 113
 114 static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
 115 {
 116         return container_of(subdev, struct vsp1_entity, subdev);
 117 }
 118
 119 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
 120                      const char *name, unsigned int num_pads,
 121                      const struct v4l2_subdev_ops *ops, u32 function);
 122 void vsp1_entity_destroy(struct vsp1_entity *entity);
 123
 124 extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops;
 125
 126 int vsp1_entity_link_setup(struct media_entity *entity,
 127                            const struct media_pad *local,
 128                            const struct media_pad *remote, u32 flags);
 129
 130 struct v4l2_subdev_pad_config *
 131 vsp1_entity_get_pad_config(struct vsp1_entity *entity,
 132                            struct v4l2_subdev_pad_config *cfg,
 133                            enum v4l2_subdev_format_whence which);
 134 struct v4l2_mbus_framefmt *
 135 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
 136                            struct v4l2_subdev_pad_config *cfg,
 137                            unsigned int pad);
 138 struct v4l2_rect *
 139 vsp1_entity_get_pad_selection(struct vsp1_entity *entity,
 140                               struct v4l2_subdev_pad_config *cfg,
 141                               unsigned int pad, unsigned int target);
 142 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev,
 143                          struct v4l2_subdev_pad_config *cfg);
 144
 145 void vsp1_entity_route_setup(struct vsp1_entity *source,
 146                              struct vsp1_dl_list *dl);
 147
 148 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev,
 149                                struct v4l2_subdev_pad_config *cfg,
 150                                struct v4l2_subdev_format *fmt);
 151 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev,
 152                                struct v4l2_subdev_pad_config *cfg,
 153                                struct v4l2_subdev_mbus_code_enum *code,
 154                                const unsigned int *codes, unsigned int ncodes);
 155 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev,
 156                                 struct v4l2_subdev_pad_config *cfg,
 157                                 struct v4l2_subdev_frame_size_enum *fse,
 158                                 unsigned int min_w, unsigned int min_h,
 159                                 unsigned int max_w, unsigned int max_h);
 160
 161 #endif /* __VSP1_ENTITY_H__ */