summaryrefslogtreecommitdiff
path: root/drivers/media/video/davinci/vpif_capture.h
blob: 064550f5ce4adcdf638d943e6d2a7bdfbdf39451 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
/*
 * Copyright (C) 2009 Texas Instruments Inc
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef VPIF_CAPTURE_H
#define VPIF_CAPTURE_H

#ifdef __KERNEL__

/* Header files */
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/videobuf-core.h>
#include <media/videobuf-dma-contig.h>
#include <mach/dm646x.h>

#include "vpif.h"

/* Macros */
#define VPIF_CAPTURE_VERSION		"0.0.2"

#define VPIF_VALID_FIELD(field)		(((V4L2_FIELD_ANY == field) || \
	(V4L2_FIELD_NONE == field)) || \
	(((V4L2_FIELD_INTERLACED == field) || \
	(V4L2_FIELD_SEQ_TB == field)) || \
	(V4L2_FIELD_SEQ_BT == field)))

#define VPIF_CAPTURE_MAX_DEVICES	2
#define VPIF_VIDEO_INDEX		0
#define VPIF_NUMBER_OF_OBJECTS		1

/* Enumerated data type to give id to each device per channel */
enum vpif_channel_id {
	VPIF_CHANNEL0_VIDEO = 0,
	VPIF_CHANNEL1_VIDEO,
};

struct video_obj {
	enum v4l2_field buf_field;
	/* Currently selected or default standard */
	v4l2_std_id stdid;
	u32 dv_preset;
	struct v4l2_bt_timings bt_timings;
	/* This is to track the last input that is passed to application */
	u32 input_idx;
};

struct common_obj {
	/* Pointer pointing to current v4l2_buffer */
	struct videobuf_buffer *cur_frm;
	/* Pointer pointing to current v4l2_buffer */
	struct videobuf_buffer *next_frm;
	/*
	 * This field keeps track of type of buffer exchange mechanism
	 * user has selected
	 */
	enum v4l2_memory memory;
	/* Used to store pixel format */
	struct v4l2_format fmt;
	/* Buffer queue used in video-buf */
	struct videobuf_queue buffer_queue;
	/* Queue of filled frames */
	struct list_head dma_queue;
	/* Used in video-buf */
	spinlock_t irqlock;
	/* lock used to access this structure */
	struct mutex lock;
	/* number of users performing IO */
	u32 io_usrs;
	/* Indicates whether streaming started */
	u8 started;
	/* Function pointer to set the addresses */
	void (*set_addr) (unsigned long, unsigned long, unsigned long,
			  unsigned long);
	/* offset where Y top starts from the starting of the buffer */
	u32 ytop_off;
	/* offset where Y bottom starts from the starting of the buffer */
	u32 ybtm_off;
	/* offset where C top starts from the starting of the buffer */
	u32 ctop_off;
	/* offset where C bottom starts from the starting of the buffer */
	u32 cbtm_off;
	/* Indicates width of the image data */
	u32 width;
	/* Indicates height of the image data */
	u32 height;
};

struct channel_obj {
	/* Identifies video device for this channel */
	struct video_device *video_dev;
	/* Used to keep track of state of the priority */
	struct v4l2_prio_state prio;
	/* number of open instances of the channel */
	int usrs;
	/* Indicates id of the field which is being displayed */
	u32 field_id;
	/* flag to indicate whether decoder is initialized */
	u8 initialized;
	/* Identifies channel */
	enum vpif_channel_id channel_id;
	/* index into sd table */
	int curr_sd_index;
	/* ptr to current sub device information */
	struct vpif_subdev_info *curr_subdev_info;
	/* vpif configuration params */
	struct vpif_params vpifparams;
	/* common object array */
	struct common_obj common[VPIF_NUMBER_OF_OBJECTS];
	/* video object */
	struct video_obj video;
};

/* File handle structure */
struct vpif_fh {
	/* pointer to channel object for opened device */
	struct channel_obj *channel;
	/* Indicates whether this file handle is doing IO */
	u8 io_allowed[VPIF_NUMBER_OF_OBJECTS];
	/* Used to keep track priority of this instance */
	enum v4l2_priority prio;
	/* Used to indicate channel is initialize or not */
	u8 initialized;
};

struct vpif_device {
	struct v4l2_device v4l2_dev;
	struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
	struct v4l2_subdev **sd;
};

struct vpif_config_params {
	u8 min_numbuffers;
	u8 numbuffers[VPIF_CAPTURE_NUM_CHANNELS];
	s8 device_type;
	u32 min_bufsize[VPIF_CAPTURE_NUM_CHANNELS];
	u32 channel_bufsize[VPIF_CAPTURE_NUM_CHANNELS];
	u8 default_device[VPIF_CAPTURE_NUM_CHANNELS];
	u8 max_device_type;
};
/* Struct which keeps track of the line numbers for the sliced vbi service */
struct vpif_service_line {
	u16 service_id;
	u16 service_line[2];
};
#endif				/* End of __KERNEL__ */
#endif				/* VPIF_CAPTURE_H */