summaryrefslogtreecommitdiffstats
path: root/drivers/media/platform/davinci/vpif_display.h
blob: a5a18f74395cdfa80a8f5e56d314f949afcb9f84 (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
163
164
165
/*
 * VPIF display header file
 *
 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
 *
 * 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 version 2.
 *
 * This program is distributed .as is. WITHOUT ANY WARRANTY of any
 * kind, whether express or implied; without even the implied warranty
 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#ifndef DAVINCIHD_DISPLAY_H
#define DAVINCIHD_DISPLAY_H

/* Header files */
#include <linux/videodev2.h>
#include <media/v4l2-common.h>
#include <media/v4l2-device.h>
#include <media/videobuf2-dma-contig.h>
#include <media/davinci/vpif_types.h>

#include "vpif.h"

/* Macros */
#define VPIF_DISPLAY_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_DISPLAY_MAX_DEVICES	(2)
#define VPIF_SLICED_BUF_SIZE		(256)
#define VPIF_SLICED_MAX_SERVICES	(3)
#define VPIF_VIDEO_INDEX		(0)
#define VPIF_VBI_INDEX			(1)
#define VPIF_HBI_INDEX			(2)

/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
#define VPIF_NUMOBJECTS	(1)

/* Macros */
#define ISALIGNED(a)    (0 == ((a) & 7))

/* enumerated data types */
/* Enumerated data type to give id to each device per channel */
enum vpif_channel_id {
	VPIF_CHANNEL2_VIDEO = 0,	/* Channel2 Video */
	VPIF_CHANNEL3_VIDEO,		/* Channel3 Video */
};

/* structures */

struct video_obj {
	enum v4l2_field buf_field;
	u32 latest_only;		/* indicate whether to return
					 * most recent displayed frame only */
	v4l2_std_id stdid;		/* Currently selected or default
					 * standard */
	struct v4l2_dv_timings dv_timings;
};

struct vpif_disp_buffer {
	struct vb2_buffer vb;
	struct list_head list;
};

struct common_obj {
	/* Buffer specific parameters */
	u8 *fbuffers[VIDEO_MAX_FRAME];		/* List of buffer pointers for
						 * storing frames */
	u32 numbuffers;				/* number of buffers */
	struct vpif_disp_buffer *cur_frm;	/* Pointer pointing to current
						 * vb2_buffer */
	struct vpif_disp_buffer *next_frm;	/* Pointer pointing to next
						 * vb2_buffer */
	enum v4l2_memory memory;		/* This field keeps track of
						 * type of buffer exchange
						 * method user has selected */
	struct v4l2_format fmt;			/* Used to store the format */
	struct vb2_queue buffer_queue;		/* Buffer queue used in
						 * video-buf */
	/* allocator-specific contexts for each plane */
	struct vb2_alloc_ctx *alloc_ctx;

	struct list_head dma_queue;		/* Queue of filled frames */
	spinlock_t irqlock;			/* Used in video-buf */

	/* channel specific parameters */
	struct mutex lock;			/* lock used to access this
						 * structure */
	u32 io_usrs;				/* number of users performing
						 * IO */
	u8 started;				/* Indicates whether streaming
						 * started */
	u32 ytop_off;				/* offset of Y top from the
						 * starting of the buffer */
	u32 ybtm_off;				/* offset of Y bottom from the
						 * starting of the buffer */
	u32 ctop_off;				/* offset of C top from the
						 * starting of the buffer */
	u32 cbtm_off;				/* offset of C bottom from the
						 * starting of the buffer */
	/* Function pointer to set the addresses */
	void (*set_addr) (unsigned long, unsigned long,
				unsigned long, unsigned long);
	u32 height;
	u32 width;
};

struct channel_obj {
	/* V4l2 specific parameters */
	struct video_device *video_dev;	/* Identifies video device for
					 * this channel */
	struct v4l2_prio_state prio;	/* Used to keep track of state of
					 * the priority */
	atomic_t usrs;			/* number of open instances of
					 * the channel */
	u32 field_id;			/* Indicates id of the field
					 * which is being displayed */
	u8 initialized;			/* flag to indicate whether
					 * encoder is initialized */
	u32 output_idx;			/* Current output index */
	struct v4l2_subdev *sd;		/* Current output subdev(may be NULL) */

	enum vpif_channel_id channel_id;/* Identifies channel */
	struct vpif_params vpifparams;
	struct common_obj common[VPIF_NUMOBJECTS];
	struct video_obj video;
};

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

/* vpif device structure */
struct vpif_device {
	struct v4l2_device v4l2_dev;
	struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
	struct v4l2_subdev **sd;

};

struct vpif_config_params {
	u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
	u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
	u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS];
	u32 video_limit[VPIF_DISPLAY_NUM_CHANNELS];
	u8 min_numbuffers;
};

#endif				/* DAVINCIHD_DISPLAY_H */
OpenPOWER on IntegriCloud