vpif_display.h revision 40c8bcea6bc594c50abf3d3867bd49c8c039eb21 
1/*
2 * DM646x display header file
3 *
4 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
5 *
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation version 2.
9 *
10 * This program is distributed .as is. WITHOUT ANY WARRANTY of any
11 * kind, whether express or implied; without even the implied warranty
12 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
13 * GNU General Public License for more details.
14 */
15
16#ifndef DAVINCIHD_DISPLAY_H
17#define DAVINCIHD_DISPLAY_H
18
19/* Header files */
20#include <linux/videodev2.h>
21#include <linux/version.h>
22#include <media/v4l2-common.h>
23#include <media/v4l2-device.h>
24#include <media/videobuf-core.h>
25#include <media/videobuf-dma-contig.h>
26
27#include "vpif.h"
28
29/* Macros */
30#define VPIF_MAJOR_RELEASE	(0)
31#define VPIF_MINOR_RELEASE	(0)
32#define VPIF_BUILD		(1)
33
34#define VPIF_DISPLAY_VERSION_CODE \
35	((VPIF_MAJOR_RELEASE << 16) | (VPIF_MINOR_RELEASE << 8) | VPIF_BUILD)
36
37#define VPIF_VALID_FIELD(field) \
38	(((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \
39	(((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \
40	(V4L2_FIELD_SEQ_BT == field)))
41
42#define VPIF_DISPLAY_MAX_DEVICES	(2)
43#define VPIF_SLICED_BUF_SIZE		(256)
44#define VPIF_SLICED_MAX_SERVICES	(3)
45#define VPIF_VIDEO_INDEX		(0)
46#define VPIF_VBI_INDEX			(1)
47#define VPIF_HBI_INDEX			(2)
48
49/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
50#define VPIF_NUMOBJECTS	(1)
51
52/* Macros */
53#define ISALIGNED(a)    (0 == ((a) & 7))
54
55/* enumerated data types */
56/* Enumerated data type to give id to each device per channel */
57enum vpif_channel_id {
58	VPIF_CHANNEL2_VIDEO = 0,	/* Channel2 Video */
59	VPIF_CHANNEL3_VIDEO,		/* Channel3 Video */
60};
61
62/* structures */
63
64struct video_obj {
65	enum v4l2_field buf_field;
66	u32 latest_only;		/* indicate whether to return
67					 * most recent displayed frame only */
68	v4l2_std_id stdid;		/* Currently selected or default
69					 * standard */
70	u32 dv_preset;
71	u32 output_id;			/* Current output id */
72};
73
74struct vbi_obj {
75	int num_services;
76	struct vpif_vbi_params vbiparams;	/* vpif parameters for the raw
77						 * vbi data */
78};
79
80struct common_obj {
81	/* Buffer specific parameters */
82	u8 *fbuffers[VIDEO_MAX_FRAME];		/* List of buffer pointers for
83						 * storing frames */
84	u32 numbuffers;				/* number of buffers */
85	struct videobuf_buffer *cur_frm;	/* Pointer pointing to current
86						 * videobuf_buffer */
87	struct videobuf_buffer *next_frm;	/* Pointer pointing to next
88						 * videobuf_buffer */
89	enum v4l2_memory memory;		/* This field keeps track of
90						 * type of buffer exchange
91						 * method user has selected */
92	struct v4l2_format fmt;			/* Used to store the format */
93	struct videobuf_queue buffer_queue;	/* Buffer queue used in
94						 * video-buf */
95	struct list_head dma_queue;		/* Queue of filled frames */
96	spinlock_t irqlock;			/* Used in video-buf */
97
98	/* channel specific parameters */
99	struct mutex lock;			/* lock used to access this
100						 * structure */
101	u32 io_usrs;				/* number of users performing
102						 * IO */
103	u8 started;				/* Indicates whether streaming
104						 * started */
105	u32 ytop_off;				/* offset of Y top from the
106						 * starting of the buffer */
107	u32 ybtm_off;				/* offset of Y bottom from the
108						 * starting of the buffer */
109	u32 ctop_off;				/* offset of C top from the
110						 * starting of the buffer */
111	u32 cbtm_off;				/* offset of C bottom from the
112						 * starting of the buffer */
113	/* Function pointer to set the addresses */
114	void (*set_addr) (unsigned long, unsigned long,
115				unsigned long, unsigned long);
116	u32 height;
117	u32 width;
118};
119
120struct channel_obj {
121	/* V4l2 specific parameters */
122	struct video_device *video_dev;	/* Identifies video device for
123					 * this channel */
124	struct v4l2_prio_state prio;	/* Used to keep track of state of
125					 * the priority */
126	atomic_t usrs;			/* number of open instances of
127					 * the channel */
128	u32 field_id;			/* Indicates id of the field
129					 * which is being displayed */
130	u8 initialized;			/* flag to indicate whether
131					 * encoder is initialized */
132
133	enum vpif_channel_id channel_id;/* Identifies channel */
134	struct vpif_params vpifparams;
135	struct common_obj common[VPIF_NUMOBJECTS];
136	struct video_obj video;
137	struct vbi_obj vbi;
138};
139
140/* File handle structure */
141struct vpif_fh {
142	struct channel_obj *channel;	/* pointer to channel object for
143					 * opened device */
144	u8 io_allowed[VPIF_NUMOBJECTS];	/* Indicates whether this file handle
145					 * is doing IO */
146	enum v4l2_priority prio;	/* Used to keep track priority of
147					 * this instance */
148	u8 initialized;			/* Used to keep track of whether this
149					 * file handle has initialized
150					 * channel or not */
151};
152
153/* vpif device structure */
154struct vpif_device {
155	struct v4l2_device v4l2_dev;
156	struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
157	struct v4l2_subdev **sd;
158
159};
160
161struct vpif_config_params {
162	u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
163	u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
164	u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS];
165	u8 min_numbuffers;
166};
167
168/* Struct which keeps track of the line numbers for the sliced vbi service */
169struct vpif_service_line {
170	u16 service_id;
171	u16 service_line[2];
172	u16 enc_service_id;
173	u8 bytestowrite;
174};
175
176#endif				/* DAVINCIHD_DISPLAY_H */
177