1 /*
2 * VPIF 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 VPIF_DISPLAY_H
17 #define VPIF_DISPLAY_H
18
19 /* Header files */
20 #include <media/videobuf2-dma-contig.h>
21 #include <media/v4l2-device.h>
22
23 #include "vpif.h"
24
25 /* Macros */
26 #define VPIF_DISPLAY_VERSION "0.0.2"
27
28 #define VPIF_VALID_FIELD(field) \
29 (((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \
30 (((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \
31 (V4L2_FIELD_SEQ_BT == field)))
32
33 #define VPIF_DISPLAY_MAX_DEVICES (2)
34 #define VPIF_SLICED_BUF_SIZE (256)
35 #define VPIF_SLICED_MAX_SERVICES (3)
36 #define VPIF_VIDEO_INDEX (0)
37 #define VPIF_VBI_INDEX (1)
38 #define VPIF_HBI_INDEX (2)
39
40 /* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
41 #define VPIF_NUMOBJECTS (1)
42
43 /* Macros */
44 #define ISALIGNED(a) (0 == ((a) & 7))
45
46 /* enumerated data types */
47 /* Enumerated data type to give id to each device per channel */
48 enum vpif_channel_id {
49 VPIF_CHANNEL2_VIDEO = 0, /* Channel2 Video */
50 VPIF_CHANNEL3_VIDEO, /* Channel3 Video */
51 };
52
53 /* structures */
54
55 struct video_obj {
56 enum v4l2_field buf_field;
57 u32 latest_only; /* indicate whether to return
58 * most recent displayed frame only */
59 v4l2_std_id stdid; /* Currently selected or default
60 * standard */
61 struct v4l2_dv_timings dv_timings;
62 };
63
64 struct vpif_disp_buffer {
65 struct vb2_v4l2_buffer vb;
66 struct list_head list;
67 };
68
69 struct common_obj {
70 struct vpif_disp_buffer *cur_frm; /* Pointer pointing to current
71 * vb2_buffer */
72 struct vpif_disp_buffer *next_frm; /* Pointer pointing to next
73 * vb2_buffer */
74 struct v4l2_format fmt; /* Used to store the format */
75 struct vb2_queue buffer_queue; /* Buffer queue used in
76 * video-buf */
77
78 struct list_head dma_queue; /* Queue of filled frames */
79 spinlock_t irqlock; /* Used in video-buf */
80
81 /* channel specific parameters */
82 struct mutex lock; /* lock used to access this
83 * structure */
84 u32 ytop_off; /* offset of Y top from the
85 * starting of the buffer */
86 u32 ybtm_off; /* offset of Y bottom from the
87 * starting of the buffer */
88 u32 ctop_off; /* offset of C top from the
89 * starting of the buffer */
90 u32 cbtm_off; /* offset of C bottom from the
91 * starting of the buffer */
92 /* Function pointer to set the addresses */
93 void (*set_addr)(unsigned long, unsigned long,
94 unsigned long, unsigned long);
95 u32 height;
96 u32 width;
97 };
98
99 struct channel_obj {
100 /* V4l2 specific parameters */
101 struct video_device video_dev; /* Identifies video device for
102 * this channel */
103 u32 field_id; /* Indicates id of the field
104 * which is being displayed */
105 u8 initialized; /* flag to indicate whether
106 * encoder is initialized */
107 u32 output_idx; /* Current output index */
108 struct v4l2_subdev *sd; /* Current output subdev(may be NULL) */
109
110 enum vpif_channel_id channel_id;/* Identifies channel */
111 struct vpif_params vpifparams;
112 struct common_obj common[VPIF_NUMOBJECTS];
113 struct video_obj video;
114 };
115
116 /* vpif device structure */
117 struct vpif_device {
118 struct v4l2_device v4l2_dev;
119 struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
120 struct v4l2_subdev **sd;
121 struct v4l2_async_notifier notifier;
122 struct vpif_display_config *config;
123 };
124
125 #endif /* VPIF_DISPLAY_H */