1/*
2 * Copyright (C) 2009 Texas Instruments Inc
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2 of the License, or
7 * (at your option) any later version.
8 *
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12 * GNU General Public License for more details.
13 *
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
17 */
18
19#ifndef VPIF_CAPTURE_H
20#define VPIF_CAPTURE_H
21
22/* Header files */
23#include <media/videobuf2-dma-contig.h>
24#include <media/v4l2-device.h>
25
26#include "vpif.h"
27
28/* Macros */
29#define VPIF_CAPTURE_VERSION		"0.0.2"
30
31#define VPIF_VALID_FIELD(field)		(((V4L2_FIELD_ANY == field) || \
32	(V4L2_FIELD_NONE == field)) || \
33	(((V4L2_FIELD_INTERLACED == field) || \
34	(V4L2_FIELD_SEQ_TB == field)) || \
35	(V4L2_FIELD_SEQ_BT == field)))
36
37#define VPIF_CAPTURE_MAX_DEVICES	2
38#define VPIF_VIDEO_INDEX		0
39#define VPIF_NUMBER_OF_OBJECTS		1
40
41/* Enumerated data type to give id to each device per channel */
42enum vpif_channel_id {
43	VPIF_CHANNEL0_VIDEO = 0,
44	VPIF_CHANNEL1_VIDEO,
45};
46
47struct video_obj {
48	enum v4l2_field buf_field;
49	/* Currently selected or default standard */
50	v4l2_std_id stdid;
51	struct v4l2_dv_timings dv_timings;
52};
53
54struct vpif_cap_buffer {
55	struct vb2_buffer vb;
56	struct list_head list;
57};
58
59struct common_obj {
60	/* Pointer pointing to current v4l2_buffer */
61	struct vpif_cap_buffer *cur_frm;
62	/* Pointer pointing to current v4l2_buffer */
63	struct vpif_cap_buffer *next_frm;
64	/* Used to store pixel format */
65	struct v4l2_format fmt;
66	/* Buffer queue used in video-buf */
67	struct vb2_queue buffer_queue;
68	/* allocator-specific contexts for each plane */
69	struct vb2_alloc_ctx *alloc_ctx;
70	/* Queue of filled frames */
71	struct list_head dma_queue;
72	/* Used in video-buf */
73	spinlock_t irqlock;
74	/* lock used to access this structure */
75	struct mutex lock;
76	/* Function pointer to set the addresses */
77	void (*set_addr) (unsigned long, unsigned long, unsigned long,
78			  unsigned long);
79	/* offset where Y top starts from the starting of the buffer */
80	u32 ytop_off;
81	/* offset where Y bottom starts from the starting of the buffer */
82	u32 ybtm_off;
83	/* offset where C top starts from the starting of the buffer */
84	u32 ctop_off;
85	/* offset where C bottom starts from the starting of the buffer */
86	u32 cbtm_off;
87	/* Indicates width of the image data */
88	u32 width;
89	/* Indicates height of the image data */
90	u32 height;
91};
92
93struct channel_obj {
94	/* Identifies video device for this channel */
95	struct video_device video_dev;
96	/* Indicates id of the field which is being displayed */
97	u32 field_id;
98	/* flag to indicate whether decoder is initialized */
99	u8 initialized;
100	/* Identifies channel */
101	enum vpif_channel_id channel_id;
102	/* Current input */
103	u32 input_idx;
104	/* subdev corresponding to the current input, may be NULL */
105	struct v4l2_subdev *sd;
106	/* vpif configuration params */
107	struct vpif_params vpifparams;
108	/* common object array */
109	struct common_obj common[VPIF_NUMBER_OF_OBJECTS];
110	/* video object */
111	struct video_obj video;
112};
113
114struct vpif_device {
115	struct v4l2_device v4l2_dev;
116	struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
117	struct v4l2_subdev **sd;
118	struct v4l2_async_notifier notifier;
119	struct vpif_capture_config *config;
120};
121
122#endif				/* VPIF_CAPTURE_H */
123