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 #define VSP1_ENTITY_MAX_INPUTS          5       /* For the BRU */
  39
  40 /*
  41  * struct vsp1_route - Entity routing configuration
  42  * @type: Entity type this routing entry is associated with
  43  * @index: Entity index this routing entry is associated with
  44  * @reg: Output routing configuration register
  45  * @inputs: Target node value for each input
  46  * @output: Target node value for entity output
  47  *
  48  * Each $vsp1_route entry describes routing configuration for the entity
  49  * specified by the entry's @type and @index. @reg indicates the register that
  50  * holds output routing configuration for the entity, and the @inputs array
  51  * store the target node value for each input of the entity. The @output field
  52  * stores the target node value of the entity output when used as a source for
  53  * histogram generation.
  54  */
  55 struct vsp1_route {
  56         enum vsp1_entity_type type;
  57         unsigned int index;
  58         unsigned int reg;
  59         unsigned int inputs[VSP1_ENTITY_MAX_INPUTS];
  60         unsigned int output;
  61 };
  62
  63 /**
  64  * struct vsp1_entity_operations - Entity operations
  65  * @destroy:    Destroy the entity.
  66  * @set_memory: Setup memory buffer access. This operation applies the settings
  67  *              stored in the rwpf mem field to the display list. Valid for RPF
  68  *              and WPF only.
  69  * @configure:  Setup the hardware based on the entity state (pipeline, formats,
  70  *              selection rectangles, ...)
  71  */
  72 struct vsp1_entity_operations {
  73         void (*destroy)(struct vsp1_entity *);
  74         void (*set_memory)(struct vsp1_entity *, struct vsp1_dl_list *dl);
  75         void (*configure)(struct vsp1_entity *, struct vsp1_pipeline *,
  76                           struct vsp1_dl_list *, bool);
  77 };
  78
  79 struct vsp1_entity {
  80         struct vsp1_device *vsp1;
  81
  82         const struct vsp1_entity_operations *ops;
  83
  84         enum vsp1_entity_type type;
  85         unsigned int index;
  86         const struct vsp1_route *route;
  87
  88         struct list_head list_dev;
  89         struct list_head list_pipe;
  90
  91         struct media_pad *pads;
  92         unsigned int source_pad;
  93
  94         struct media_entity *sink;
  95         unsigned int sink_pad;
  96
  97         struct v4l2_subdev subdev;
  98         struct v4l2_subdev_pad_config *config;
  99
 100         struct mutex lock;      /* Protects the pad config */
 101 };
 102
 103 static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
 104 {
 105         return container_of(subdev, struct vsp1_entity, subdev);
 106 }
 107
 108 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
 109                      const char *name, unsigned int num_pads,
 110                      const struct v4l2_subdev_ops *ops, u32 function);
 111 void vsp1_entity_destroy(struct vsp1_entity *entity);
 112
 113 extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops;
 114
 115 int vsp1_entity_link_setup(struct media_entity *entity,
 116                            const struct media_pad *local,
 117                            const struct media_pad *remote, u32 flags);
 118
 119 struct v4l2_subdev_pad_config *
 120 vsp1_entity_get_pad_config(struct vsp1_entity *entity,
 121                            struct v4l2_subdev_pad_config *cfg,
 122                            enum v4l2_subdev_format_whence which);
 123 struct v4l2_mbus_framefmt *
 124 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
 125                            struct v4l2_subdev_pad_config *cfg,
 126                            unsigned int pad);
 127 struct v4l2_rect *
 128 vsp1_entity_get_pad_selection(struct vsp1_entity *entity,
 129                               struct v4l2_subdev_pad_config *cfg,
 130                               unsigned int pad, unsigned int target);
 131 int vsp1_entity_init_cfg(struct v4l2_subdev *subdev,
 132                          struct v4l2_subdev_pad_config *cfg);
 133
 134 void vsp1_entity_route_setup(struct vsp1_entity *source,
 135                              struct vsp1_dl_list *dl);
 136
 137 int vsp1_subdev_get_pad_format(struct v4l2_subdev *subdev,
 138                                struct v4l2_subdev_pad_config *cfg,
 139                                struct v4l2_subdev_format *fmt);
 140 int vsp1_subdev_enum_mbus_code(struct v4l2_subdev *subdev,
 141                                struct v4l2_subdev_pad_config *cfg,
 142                                struct v4l2_subdev_mbus_code_enum *code,
 143                                const unsigned int *codes, unsigned int ncodes);
 144 int vsp1_subdev_enum_frame_size(struct v4l2_subdev *subdev,
 145                                 struct v4l2_subdev_pad_config *cfg,
 146                                 struct v4l2_subdev_frame_size_enum *fse,
 147                                 unsigned int min_w, unsigned int min_h,
 148                                 unsigned int max_w, unsigned int max_h);
 149
 150 #endif /* __VSP1_ENTITY_H__ */