]> git.proxmox.com Git - mirror_ubuntu-bionic-kernel.git/blob - drivers/media/platform/vsp1/vsp1_pipe.h
Merge branch 'for-linus-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/mason...
[mirror_ubuntu-bionic-kernel.git] / drivers / media / platform / vsp1 / vsp1_pipe.h
1 /*
2 * vsp1_pipe.h -- R-Car VSP1 Pipeline
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_PIPE_H__
14 #define __VSP1_PIPE_H__
15
16 #include <linux/kref.h>
17 #include <linux/list.h>
18 #include <linux/spinlock.h>
19 #include <linux/wait.h>
20
21 #include <media/media-entity.h>
22
23 struct vsp1_dl_list;
24 struct vsp1_rwpf;
25
26 /*
27 * struct vsp1_format_info - VSP1 video format description
28 * @mbus: media bus format code
29 * @fourcc: V4L2 pixel format FCC identifier
30 * @planes: number of planes
31 * @bpp: bits per pixel
32 * @hwfmt: VSP1 hardware format
33 * @swap_yc: the Y and C components are swapped (Y comes before C)
34 * @swap_uv: the U and V components are swapped (V comes before U)
35 * @hsub: horizontal subsampling factor
36 * @vsub: vertical subsampling factor
37 * @alpha: has an alpha channel
38 */
39 struct vsp1_format_info {
40 u32 fourcc;
41 unsigned int mbus;
42 unsigned int hwfmt;
43 unsigned int swap;
44 unsigned int planes;
45 unsigned int bpp[3];
46 bool swap_yc;
47 bool swap_uv;
48 unsigned int hsub;
49 unsigned int vsub;
50 bool alpha;
51 };
52
53 enum vsp1_pipeline_state {
54 VSP1_PIPELINE_STOPPED,
55 VSP1_PIPELINE_RUNNING,
56 VSP1_PIPELINE_STOPPING,
57 };
58
59 /*
60 * struct vsp1_pipeline - A VSP1 hardware pipeline
61 * @pipe: the media pipeline
62 * @irqlock: protects the pipeline state
63 * @state: current state
64 * @wq: wait queue to wait for state change completion
65 * @frame_end: frame end interrupt handler
66 * @lock: protects the pipeline use count and stream count
67 * @kref: pipeline reference count
68 * @stream_count: number of streaming video nodes
69 * @buffers_ready: bitmask of RPFs and WPFs with at least one buffer available
70 * @sequence: frame sequence number
71 * @num_inputs: number of RPFs
72 * @inputs: array of RPFs in the pipeline (indexed by RPF index)
73 * @output: WPF at the output of the pipeline
74 * @bru: BRU entity, if present
75 * @lif: LIF entity, if present
76 * @uds: UDS entity, if present
77 * @uds_input: entity at the input of the UDS, if the UDS is present
78 * @entities: list of entities in the pipeline
79 * @dl: display list associated with the pipeline
80 */
81 struct vsp1_pipeline {
82 struct media_pipeline pipe;
83
84 spinlock_t irqlock;
85 enum vsp1_pipeline_state state;
86 wait_queue_head_t wq;
87
88 void (*frame_end)(struct vsp1_pipeline *pipe);
89
90 struct mutex lock;
91 struct kref kref;
92 unsigned int stream_count;
93 unsigned int buffers_ready;
94 unsigned int sequence;
95
96 unsigned int num_inputs;
97 struct vsp1_rwpf *inputs[VSP1_MAX_RPF];
98 struct vsp1_rwpf *output;
99 struct vsp1_entity *bru;
100 struct vsp1_entity *lif;
101 struct vsp1_entity *uds;
102 struct vsp1_entity *uds_input;
103
104 struct list_head entities;
105
106 struct vsp1_dl_list *dl;
107 };
108
109 void vsp1_pipeline_reset(struct vsp1_pipeline *pipe);
110 void vsp1_pipeline_init(struct vsp1_pipeline *pipe);
111
112 void vsp1_pipeline_run(struct vsp1_pipeline *pipe);
113 bool vsp1_pipeline_stopped(struct vsp1_pipeline *pipe);
114 int vsp1_pipeline_stop(struct vsp1_pipeline *pipe);
115 bool vsp1_pipeline_ready(struct vsp1_pipeline *pipe);
116
117 void vsp1_pipeline_frame_end(struct vsp1_pipeline *pipe);
118
119 void vsp1_pipeline_propagate_alpha(struct vsp1_pipeline *pipe,
120 struct vsp1_dl_list *dl, unsigned int alpha);
121
122 void vsp1_pipelines_suspend(struct vsp1_device *vsp1);
123 void vsp1_pipelines_resume(struct vsp1_device *vsp1);
124
125 const struct vsp1_format_info *vsp1_get_format_info(u32 fourcc);
126
127 #endif /* __VSP1_PIPE_H__ */