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  * @output: Target node value for entity output
  46  *
  47  * Each $vsp1_route entry describes routing configuration for the entity
  48  * specified by the entry's @type and @index. @reg indicates the register that
  49  * holds output routing configuration for the entity, and the @inputs array
  50  * store the target node value for each input of the entity. The @output field
  51  * stores the target node value of the entity output when used as a source for
  52  * histogram generation.
  53  */
  54 struct vsp1_route {
  55         enum vsp1_entity_type type;
  56         unsigned int index;
  57         unsigned int reg;
  58         unsigned int inputs[VSP1_ENTITY_MAX_INPUTS];
  59         unsigned int output;
  60 };
  61
  62 /**
  63  * struct vsp1_entity_operations - Entity operations
  64  * @destroy:    Destroy the entity.
  65  * @set_memory: Setup memory buffer access. This operation applies the settings
  66  *              stored in the rwpf mem field to the display list. Valid for RPF
  67  *              and WPF only.
  68  * @configure:  Setup the hardware based on the entity state (pipeline, formats,
  69  *              selection rectangles, ...)
  70  */
  71 struct vsp1_entity_operations {
  72         void (*destroy)(struct vsp1_entity *);
  73         void (*set_memory)(struct vsp1_entity *, struct vsp1_dl_list *dl);
  74         void (*configure)(struct vsp1_entity *, struct vsp1_pipeline *,
  75                           struct vsp1_dl_list *);
  76 };
  77
  78 struct vsp1_entity {
  79         struct vsp1_device *vsp1;
  80
  81         const struct vsp1_entity_operations *ops;
  82
  83         enum vsp1_entity_type type;
  84         unsigned int index;
  85         const struct vsp1_route *route;
  86
  87         struct list_head list_dev;
  88         struct list_head list_pipe;
  89
  90         struct media_pad *pads;
  91         unsigned int source_pad;
  92
  93         struct media_entity *sink;
  94         unsigned int sink_pad;
  95
  96         struct v4l2_subdev subdev;
  97         struct v4l2_subdev_pad_config *config;
  98 };
  99
 100 static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
 101 {
 102         return container_of(subdev, struct vsp1_entity, subdev);
 103 }
 104
 105 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
 106                      const char *name, unsigned int num_pads,
 107                      const struct v4l2_subdev_ops *ops, u32 function);
 108 void vsp1_entity_destroy(struct vsp1_entity *entity);
 109
 110 extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops;
 111
 112 int vsp1_entity_link_setup(struct media_entity *entity,
 113                            const struct media_pad *local,
 114                            const struct media_pad *remote, u32 flags);
 115
 116 struct v4l2_subdev_pad_config *
 117 vsp1_entity_get_pad_config(struct vsp1_entity *entity,
 118                            struct v4l2_subdev_pad_config *cfg,
 119                            enum v4l2_subdev_format_whence which);
 120 struct v4l2_mbus_framefmt *
 121 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
 122                            struct v4l2_subdev_pad_config *cfg,
 123                            unsigned int pad);
 124 struct v4l2_rect *
 125 vsp1_entity_get_pad_selection(struct vsp1_entity *entity,
 126                               struct v4l2_subdev_pad_config *cfg,
 127                               unsigned int pad, unsigned int target);
 128 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev,
 129                          struct v4l2_subdev_pad_config *cfg);
 130
 131 void vsp1_entity_route_setup(struct vsp1_entity *source,
 132                              struct vsp1_dl_list *dl);
 133
 134 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev,
 135                                struct v4l2_subdev_pad_config *cfg,
 136                                struct v4l2_subdev_format *fmt);
 137 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev,
 138                                struct v4l2_subdev_pad_config *cfg,
 139                                struct v4l2_subdev_mbus_code_enum *code,
 140                                const unsigned int *codes, unsigned int ncodes);
 141 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev,
 142                                 struct v4l2_subdev_pad_config *cfg,
 143                                 struct v4l2_subdev_frame_size_enum *fse,
 144                                 unsigned int min_w, unsigned int min_h,
 145                                 unsigned int max_w, unsigned int max_h);
 146
 147 #endif /* __VSP1_ENTITY_H__ */