1 /*
2 * vsp1_video.h -- R-Car VSP1 Video Node
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_VIDEO_H__
14 #define __VSP1_VIDEO_H__
15
16 #include <linux/list.h>
17 #include <linux/spinlock.h>
18 #include <linux/wait.h>
19
20 #include <media/media-entity.h>
21 #include <media/videobuf2-core.h>
22
23 struct vsp1_video;
24
25 /*
26 * struct vsp1_format_info - VSP1 video format description
27 * @mbus: media bus format code
28 * @fourcc: V4L2 pixel format FCC identifier
29 * @planes: number of planes
30 * @bpp: bits per pixel
31 * @hwfmt: VSP1 hardware format
32 * @swap_yc: the Y and C components are swapped (Y comes before C)
33 * @swap_uv: the U and V components are swapped (V comes before U)
34 * @hsub: horizontal subsampling factor
35 * @vsub: vertical subsampling factor
36 * @alpha: has an alpha channel
37 */
38 struct vsp1_format_info {
39 u32 fourcc;
40 unsigned int mbus;
41 unsigned int hwfmt;
42 unsigned int swap;
43 unsigned int planes;
44 unsigned int bpp[3];
45 bool swap_yc;
46 bool swap_uv;
47 unsigned int hsub;
48 unsigned int vsub;
49 bool alpha;
50 };
51
52 enum vsp1_pipeline_state {
53 VSP1_PIPELINE_STOPPED,
54 VSP1_PIPELINE_RUNNING,
55 VSP1_PIPELINE_STOPPING,
56 };
57
58 /*
59 * struct vsp1_pipeline - A VSP1 hardware pipeline
60 * @media: the media pipeline
61 * @irqlock: protects the pipeline state
62 * @lock: protects the pipeline use count and stream count
63 */
64 struct vsp1_pipeline {
65 struct media_pipeline pipe;
66
67 spinlock_t irqlock;
68 enum vsp1_pipeline_state state;
69 wait_queue_head_t wq;
70
71 struct mutex lock;
72 unsigned int use_count;
73 unsigned int stream_count;
74 unsigned int buffers_ready;
75
76 unsigned int num_video;
77 unsigned int num_inputs;
78 struct vsp1_rwpf *inputs[VSP1_MAX_RPF];
79 struct vsp1_rwpf *output;
80 struct vsp1_entity *bru;
81 struct vsp1_entity *lif;
82 struct vsp1_entity *uds;
83 struct vsp1_entity *uds_input;
84
85 struct list_head entities;
86 };
87
to_vsp1_pipeline(struct media_entity * e)88 static inline struct vsp1_pipeline *to_vsp1_pipeline(struct media_entity *e)
89 {
90 if (likely(e->pipe))
91 return container_of(e->pipe, struct vsp1_pipeline, pipe);
92 else
93 return NULL;
94 }
95
96 struct vsp1_video_buffer {
97 struct vb2_buffer buf;
98 struct list_head queue;
99
100 dma_addr_t addr[3];
101 unsigned int length[3];
102 };
103
104 static inline struct vsp1_video_buffer *
to_vsp1_video_buffer(struct vb2_buffer * vb)105 to_vsp1_video_buffer(struct vb2_buffer *vb)
106 {
107 return container_of(vb, struct vsp1_video_buffer, buf);
108 }
109
110 struct vsp1_video_operations {
111 void (*queue)(struct vsp1_video *video, struct vsp1_video_buffer *buf);
112 };
113
114 struct vsp1_video {
115 struct vsp1_device *vsp1;
116 struct vsp1_entity *rwpf;
117
118 const struct vsp1_video_operations *ops;
119
120 struct video_device video;
121 enum v4l2_buf_type type;
122 struct media_pad pad;
123
124 struct mutex lock;
125 struct v4l2_pix_format_mplane format;
126 const struct vsp1_format_info *fmtinfo;
127
128 struct vsp1_pipeline pipe;
129 unsigned int pipe_index;
130
131 struct vb2_queue queue;
132 void *alloc_ctx;
133 spinlock_t irqlock;
134 struct list_head irqqueue;
135 unsigned int sequence;
136 };
137
to_vsp1_video(struct video_device * vdev)138 static inline struct vsp1_video *to_vsp1_video(struct video_device *vdev)
139 {
140 return container_of(vdev, struct vsp1_video, video);
141 }
142
143 int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf);
144 void vsp1_video_cleanup(struct vsp1_video *video);
145
146 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
147
148 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
149 struct vsp1_entity *input,
150 unsigned int alpha);
151
152 #endif /* __VSP1_VIDEO_H__ */
153