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gerrit-public.fairphone.software / kernel / msm-4.9 / c1d9e03d4ef47de60b414fa25f05f9c867f43c5a / . / drivers / staging / media / davinci_vpfe / vpfe_video.h
blob: 1b1b6c4a56b75d77ca605be558b187e2c712e7b6 [file] [log] [blame]
Manjunath Hadli622897d2012-11-28 02:03:38 -0300[diff] [blame]1/*
2 * Copyright (C) 2012 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public License as
6 * published by the Free Software Foundation version 2.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public License
14 * along with this program; if not, write to the Free Software
15 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
16 *
17 * Contributors:
18 * Manjunath Hadli <manjunath.hadli@ti.com>
19 * Prabhakar Lad <prabhakar.lad@ti.com>
20 */
21
22#ifndef _DAVINCI_VPFE_VIDEO_H
23#define _DAVINCI_VPFE_VIDEO_H
24
25#include <media/videobuf2-dma-contig.h>
26
27struct vpfe_device;
28
29/*
30 * struct vpfe_video_operations - VPFE video operations
31 * @queue: Resume streaming when a buffer is queued. Called on VIDIOC_QBUF
32 * if there was no buffer previously queued.
33 */
34struct vpfe_video_operations {
Aybuke Ozdemira0ecdf02014-03-19 20:25:13 +0200[diff] [blame]35 int (*queue)(struct vpfe_device *vpfe_dev, unsigned long addr);
Manjunath Hadli622897d2012-11-28 02:03:38 -0300[diff] [blame]36};
37
38enum vpfe_pipeline_stream_state {
39 VPFE_PIPELINE_STREAM_STOPPED = 0,
40 VPFE_PIPELINE_STREAM_CONTINUOUS = 1,
41 VPFE_PIPELINE_STREAM_SINGLESHOT = 2,
42};
43
44enum vpfe_video_state {
45 /* indicates that buffer is not queued */
46 VPFE_VIDEO_BUFFER_NOT_QUEUED = 0,
47 /* indicates that buffer is queued */
48 VPFE_VIDEO_BUFFER_QUEUED = 1,
49};
50
51struct vpfe_pipeline {
52 /* media pipeline */
53 struct media_pipeline *pipe;
54 /* state of the pipeline, continuous,
55 * single-shot or stopped
56 */
57 enum vpfe_pipeline_stream_state state;
58 /* number of active input video entities */
59 unsigned int input_num;
60 /* number of active output video entities */
61 unsigned int output_num;
62 /* input video nodes in case of single-shot mode */
63 struct vpfe_video_device *inputs[10];
64 /* capturing video nodes */
65 struct vpfe_video_device *outputs[10];
66};
67
68#define to_vpfe_pipeline(__e) \
69 container_of((__e)->pipe, struct vpfe_pipeline, pipe)
70
71#define to_vpfe_video(vdev) \
72 container_of(vdev, struct vpfe_video_device, video_dev)
73
74struct vpfe_cap_buffer {
75 struct vb2_buffer vb;
76 struct list_head list;
77};
78
79struct vpfe_video_device {
80 /* vpfe device */
81 struct vpfe_device *vpfe_dev;
82 /* video dev */
83 struct video_device video_dev;
84 /* media pad of video entity */
85 struct media_pad pad;
86 /* video operations supported by video device */
87 const struct vpfe_video_operations *ops;
88 /* type of the video buffers used by user */
89 enum v4l2_buf_type type;
90 /* Indicates id of the field which is being captured */
91 u32 field_id;
92 /* pipeline for which video device is part of */
93 struct vpfe_pipeline pipe;
94 /* Indicates whether streaming started */
95 u8 started;
96 /* Indicates state of the stream */
97 unsigned int state;
98 /* current input at the sub device */
99 int current_input;
100 /*
101 * This field keeps track of type of buffer exchange mechanism
102 * user has selected
103 */
104 enum v4l2_memory memory;
Manjunath Hadli622897d2012-11-28 02:03:38 -0300[diff] [blame]105 /* number of open instances of the channel */
106 u32 usrs;
107 /* flag to indicate whether decoder is initialized */
108 u8 initialized;
109 /* skip frame count */
110 u8 skip_frame_count;
111 /* skip frame count init value */
112 u8 skip_frame_count_init;
113 /* time per frame for skipping */
114 struct v4l2_fract timeperframe;
115 /* ptr to currently selected sub device */
116 struct vpfe_ext_subdev_info *current_ext_subdev;
117 /* Pointer pointing to current vpfe_cap_buffer */
118 struct vpfe_cap_buffer *cur_frm;
119 /* Pointer pointing to next vpfe_cap_buffer */
120 struct vpfe_cap_buffer *next_frm;
121 /* Used to store pixel format */
122 struct v4l2_format fmt;
123 struct vb2_queue buffer_queue;
124 /* allocator-specific contexts for each plane */
125 struct vb2_alloc_ctx *alloc_ctx;
126 /* Queue of filled frames */
127 struct list_head dma_queue;
128 spinlock_t irqlock;
129 /* IRQ lock for DMA queue */
130 spinlock_t dma_queue_lock;
131 /* lock used to access this structure */
132 struct mutex lock;
133 /* number of users performing IO */
134 u32 io_usrs;
135 /* Currently selected or default standard */
136 v4l2_std_id stdid;
137 /*
138 * offset where second field starts from the starting of the
Masanari Iidad88fe152013-03-27 00:23:28 +0900[diff] [blame]139 * buffer for field separated YCbCr formats
Manjunath Hadli622897d2012-11-28 02:03:38 -0300[diff] [blame]140 */
141 u32 field_off;
142};
143
144int vpfe_video_is_pipe_ready(struct vpfe_pipeline *pipe);
145void vpfe_video_unregister(struct vpfe_video_device *video);
146int vpfe_video_register(struct vpfe_video_device *video,
147 struct v4l2_device *vdev);
148int vpfe_video_init(struct vpfe_video_device *video, const char *name);
149void vpfe_video_process_buffer_complete(struct vpfe_video_device *video);
150void vpfe_video_schedule_bottom_field(struct vpfe_video_device *video);
151void vpfe_video_schedule_next_buffer(struct vpfe_video_device *video);
152
153#endif /* _DAVINCI_VPFE_VIDEO_H */