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
  23 enum vsp1_entity_type {
  24         VSP1_ENTITY_BRU,
  25         VSP1_ENTITY_HSI,
  26         VSP1_ENTITY_HST,
  27         VSP1_ENTITY_LIF,
  28         VSP1_ENTITY_LUT,
  29         VSP1_ENTITY_RPF,
  30         VSP1_ENTITY_SRU,
  31         VSP1_ENTITY_UDS,
  32         VSP1_ENTITY_WPF,
  33 };
  34
  35 /*
  36  * struct vsp1_route - Entity routing configuration
  37  * @type: Entity type this routing entry is associated with
  38  * @index: Entity index this routing entry is associated with
  39  * @reg: Output routing configuration register
  40  * @inputs: Target node value for each input
  41  *
  42  * Each $vsp1_route entry describes routing configuration for the entity
  43  * specified by the entry's @type and @index. @reg indicates the register that
  44  * holds output routing configuration for the entity, and the @inputs array
  45  * store the target node value for each input of the entity.
  46  */
  47 struct vsp1_route {
  48         enum vsp1_entity_type type;
  49         unsigned int index;
  50         unsigned int reg;
  51         unsigned int inputs[4];
  52 };
  53
  54 struct vsp1_entity {
  55         struct vsp1_device *vsp1;
  56
  57         enum vsp1_entity_type type;
  58         unsigned int index;
  59         const struct vsp1_route *route;
  60
  61         struct list_head list_dev;
  62         struct list_head list_pipe;
  63
  64         struct media_pad *pads;
  65         unsigned int source_pad;
  66
  67         struct media_entity *sink;
  68         unsigned int sink_pad;
  69
  70         struct v4l2_subdev subdev;
  71         struct v4l2_mbus_framefmt *formats;
  72
  73         spinlock_t lock;                /* Protects the streaming field */
  74         bool streaming;
  75 };
  76
  77 static inline struct vsp1_entity *to_vsp1_entity(struct v4l2_subdev *subdev)
  78 {
  79         return container_of(subdev, struct vsp1_entity, subdev);
  80 }
  81
  82 int vsp1_entity_init(struct vsp1_device *vsp1, struct vsp1_entity *entity,
  83                      unsigned int num_pads);
  84 void vsp1_entity_destroy(struct vsp1_entity *entity);
  85
  86 extern const struct v4l2_subdev_internal_ops vsp1_subdev_internal_ops;
  87 extern const struct media_entity_operations vsp1_media_ops;
  88
  89 struct v4l2_mbus_framefmt *
  90 vsp1_entity_get_pad_format(struct vsp1_entity *entity,
  91                            struct v4l2_subdev_pad_config *cfg,
  92                            unsigned int pad, u32 which);
  93 void vsp1_entity_init_formats(struct v4l2_subdev *subdev,
  94                               struct v4l2_subdev_pad_config *cfg);
  95
  96 bool vsp1_entity_is_streaming(struct vsp1_entity *entity);
  97 int vsp1_entity_set_streaming(struct vsp1_entity *entity, bool streaming);
  98
  99 void vsp1_entity_route_setup(struct vsp1_entity *source);
 100
 101 #endif /* __VSP1_ENTITY_H__ */