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
to_vsp1_entity(struct v4l2_subdev * subdev)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__ */
162