1/*
2 * vsp1_video.h  --  R-Car VSP1 Video Node
3 *
4 * Copyright (C) 2013-2015 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-v4l2.h>
22
23struct 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 */
38struct 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
52enum 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 */
64struct 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
88static 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
96struct vsp1_video_buffer {
97	struct vb2_v4l2_buffer buf;
98	struct list_head queue;
99
100	dma_addr_t addr[3];
101	unsigned int length[3];
102};
103
104static inline struct vsp1_video_buffer *
105to_vsp1_video_buffer(struct vb2_v4l2_buffer *vbuf)
106{
107	return container_of(vbuf, struct vsp1_video_buffer, buf);
108}
109
110struct vsp1_video_operations {
111	void (*queue)(struct vsp1_video *video, struct vsp1_video_buffer *buf);
112};
113
114struct 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
138static inline struct vsp1_video *to_vsp1_video(struct video_device *vdev)
139{
140	return container_of(vdev, struct vsp1_video, video);
141}
142
143int vsp1_video_init(struct vsp1_video *video, struct vsp1_entity *rwpf);
144void vsp1_video_cleanup(struct vsp1_video *video);
145
146void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
147
148void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
149				   struct vsp1_entity *input,
150				   unsigned int alpha);
151
152void vsp1_pipelines_suspend(struct vsp1_device *vsp1);
153void vsp1_pipelines_resume(struct vsp1_device *vsp1);
154
155#endif /* __VSP1_VIDEO_H__ */
156