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/spinlock.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_HSI,
  28         VSP1_ENTITY_HST,
  29         VSP1_ENTITY_LIF,
  30         VSP1_ENTITY_LUT,
  31         VSP1_ENTITY_RPF,
  32         VSP1_ENTITY_SRU,
  33         VSP1_ENTITY_UDS,
  34         VSP1_ENTITY_WPF,
  35 };
  36
  37 #define VSP1_ENTITY_MAX_INPUTS          5       /* For the BRU */
  38
  39 /*
  40  * struct vsp1_route - Entity routing configuration
  41  * @type: Entity type this routing entry is associated with
  42  * @index: Entity index this routing entry is associated with
  43  * @reg: Output routing configuration register
  44  * @inputs: Target node value for each input
  45  *
  46  * Each $vsp1_route entry describes routing configuration for the entity
  47  * specified by the entry's @type and @index. @reg indicates the register that
  48  * holds output routing configuration for the entity, and the @inputs array
  49  * store the target node value for each input of the entity.
  50  */
  51 struct vsp1_route {
  52         enum vsp1_entity_type type;
  53         unsigned int index;
  54         unsigned int reg;
  55         unsigned int inputs[VSP1_ENTITY_MAX_INPUTS];
  56 };
  57
  58 /**
  59  * struct vsp1_entity_operations - Entity operations
  60  * @destroy:    Destroy the entity.
  61  * @set_memory: Setup memory buffer access. This operation applies the settings
  62  *              stored in the rwpf mem field to the display list. Valid for RPF
  63  *              and WPF only.
  64  * @configure:  Setup the hardware based on the entity state (pipeline, formats,
  65  *              selection rectangles, ...)
  66  */
  67 struct vsp1_entity_operations {
  68         void (*destroy)(struct vsp1_entity *);
  69         void (*set_memory)(struct vsp1_entity *, struct vsp1_dl_list *dl);
  70         void (*configure)(struct vsp1_entity *, struct vsp1_pipeline *,
  71                           struct vsp1_dl_list *);
  72 };
  73
  74 struct vsp1_entity {
  75         struct vsp1_device *vsp1;
  76
  77         const struct vsp1_entity_operations *ops;
  78
  79         enum vsp1_entity_type type;
  80         unsigned int index;
  81         const struct vsp1_route *route;
  82
  83         struct list_head list_dev;
  84         struct list_head list_pipe;
  85
  86         struct media_pad *pads;
  87         unsigned int source_pad;
  88
  89         struct media_entity *sink;
  90         unsigned int sink_pad;
  91
  92         struct v4l2_subdev subdev;
  93         struct v4l2_subdev_pad_config *config;
  94 };
  95
  96 static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
  97 {
  98         return container_of(subdev, struct vsp1_entity, subdev);
  99 }
 100
 101 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
 102                      const char *name, unsigned int num_pads,
 103                      const struct v4l2_subdev_ops *ops);
 104 void vsp1_entity_destroy(struct vsp1_entity *entity);
 105
 106 extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops;
 107
 108 int vsp1_entity_link_setup(struct media_entity *entity,
 109                            const struct media_pad *local,
 110                            const struct media_pad *remote, u32 flags);
 111
 112 struct v4l2_subdev_pad_config *
 113 vsp1_entity_get_pad_config(struct vsp1_entity *entity,
 114                            struct v4l2_subdev_pad_config *cfg,
 115                            enum v4l2_subdev_format_whence which);
 116 struct v4l2_mbus_framefmt *
 117 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
 118                            struct v4l2_subdev_pad_config *cfg,
 119                            unsigned int pad);
 120 struct v4l2_rect *
 121 vsp1_entity_get_pad_compose(struct vsp1_entity *entity,
 122                             struct v4l2_subdev_pad_config *cfg,
 123                             unsigned int pad);
 124 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev,
 125                          struct v4l2_subdev_pad_config *cfg);
 126
 127 void vsp1_entity_route_setup(struct vsp1_entity *source,
 128                              struct vsp1_dl_list *dl);
 129
 130 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev,
 131                                struct v4l2_subdev_pad_config *cfg,
 132                                struct v4l2_subdev_format *fmt);
 133 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev,
 134                                struct v4l2_subdev_pad_config *cfg,
 135                                struct v4l2_subdev_mbus_code_enum *code,
 136                                const unsigned int *codes, unsigned int ncodes);
 137 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev,
 138                                 struct v4l2_subdev_pad_config *cfg,
 139                                 struct v4l2_subdev_frame_size_enum *fse,
 140                                 unsigned int min_w, unsigned int min_h,
 141                                 unsigned int max_w, unsigned int max_h);
 142
 143 #endif /* __VSP1_ENTITY_H__ */