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 <media/v4l2-common.h>
22#include <media/v4l2-device.h>
23#include <media/videobuf-core.h>
24#include <media/videobuf-dma-contig.h>
25#include <media/davinci/vpif_types.h>
26
27#include "vpif.h"
28
29/* Macros */
30#define VPIF_DISPLAY_VERSION	"0.0.2"
31
32#define VPIF_VALID_FIELD(field) \
33	(((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \
34	(((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \
35	(V4L2_FIELD_SEQ_BT == field)))
36
37#define VPIF_DISPLAY_MAX_DEVICES	(2)
38#define VPIF_SLICED_BUF_SIZE		(256)
39#define VPIF_SLICED_MAX_SERVICES	(3)
40#define VPIF_VIDEO_INDEX		(0)
41#define VPIF_VBI_INDEX			(1)
42#define VPIF_HBI_INDEX			(2)
43
44/* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
45#define VPIF_NUMOBJECTS	(1)
46
47/* Macros */
48#define ISALIGNED(a)    (0 == ((a) & 7))
49
50/* enumerated data types */
51/* Enumerated data type to give id to each device per channel */
52enum vpif_channel_id {
53	VPIF_CHANNEL2_VIDEO = 0,	/* Channel2 Video */
54	VPIF_CHANNEL3_VIDEO,		/* Channel3 Video */
55};
56
57/* structures */
58
59struct video_obj {
60	enum v4l2_field buf_field;
61	u32 latest_only;		/* indicate whether to return
62					 * most recent displayed frame only */
63	v4l2_std_id stdid;		/* Currently selected or default
64					 * standard */
65	u32 dv_preset;
66	struct v4l2_bt_timings bt_timings;
67	u32 output_id;			/* Current output id */
68};
69
70struct vbi_obj {
71	int num_services;
72	struct vpif_vbi_params vbiparams;	/* vpif parameters for the raw
73						 * vbi data */
74};
75
76struct common_obj {
77	/* Buffer specific parameters */
78	u8 *fbuffers[VIDEO_MAX_FRAME];		/* List of buffer pointers for
79						 * storing frames */
80	u32 numbuffers;				/* number of buffers */
81	struct videobuf_buffer *cur_frm;	/* Pointer pointing to current
82						 * videobuf_buffer */
83	struct videobuf_buffer *next_frm;	/* Pointer pointing to next
84						 * videobuf_buffer */
85	enum v4l2_memory memory;		/* This field keeps track of
86						 * type of buffer exchange
87						 * method user has selected */
88	struct v4l2_format fmt;			/* Used to store the format */
89	struct videobuf_queue buffer_queue;	/* Buffer queue used in
90						 * video-buf */
91	struct list_head dma_queue;		/* Queue of filled frames */
92	spinlock_t irqlock;			/* Used in video-buf */
93
94	/* channel specific parameters */
95	struct mutex lock;			/* lock used to access this
96						 * structure */
97	u32 io_usrs;				/* number of users performing
98						 * IO */
99	u8 started;				/* Indicates whether streaming
100						 * started */
101	u32 ytop_off;				/* offset of Y top from the
102						 * starting of the buffer */
103	u32 ybtm_off;				/* offset of Y bottom from the
104						 * starting of the buffer */
105	u32 ctop_off;				/* offset of C top from the
106						 * starting of the buffer */
107	u32 cbtm_off;				/* offset of C bottom from the
108						 * starting of the buffer */
109	/* Function pointer to set the addresses */
110	void (*set_addr) (unsigned long, unsigned long,
111				unsigned long, unsigned long);
112	u32 height;
113	u32 width;
114};
115
116struct channel_obj {
117	/* V4l2 specific parameters */
118	struct video_device *video_dev;	/* Identifies video device for
119					 * this channel */
120	struct v4l2_prio_state prio;	/* Used to keep track of state of
121					 * the priority */
122	atomic_t usrs;			/* number of open instances of
123					 * the channel */
124	u32 field_id;			/* Indicates id of the field
125					 * which is being displayed */
126	u8 initialized;			/* flag to indicate whether
127					 * encoder is initialized */
128
129	enum vpif_channel_id channel_id;/* Identifies channel */
130	struct vpif_params vpifparams;
131	struct common_obj common[VPIF_NUMOBJECTS];
132	struct video_obj video;
133	struct vbi_obj vbi;
134};
135
136/* File handle structure */
137struct vpif_fh {
138	struct channel_obj *channel;	/* pointer to channel object for
139					 * opened device */
140	u8 io_allowed[VPIF_NUMOBJECTS];	/* Indicates whether this file handle
141					 * is doing IO */
142	enum v4l2_priority prio;	/* Used to keep track priority of
143					 * this instance */
144	u8 initialized;			/* Used to keep track of whether this
145					 * file handle has initialized
146					 * channel or not */
147};
148
149/* vpif device structure */
150struct vpif_device {
151	struct v4l2_device v4l2_dev;
152	struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
153	struct v4l2_subdev **sd;
154
155};
156
157struct vpif_config_params {
158	u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
159	u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
160	u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS];
161	u8 min_numbuffers;
162};
163
164/* Struct which keeps track of the line numbers for the sliced vbi service */
165struct vpif_service_line {
166	u16 service_id;
167	u16 service_line[2];
168	u16 enc_service_id;
169	u8 bytestowrite;
170};
171
172#endif				/* DAVINCIHD_DISPLAY_H */
173