2 * DM646x display header file
4 * Copyright (C) 2009 Texas Instruments Incorporated - http://www.ti.com/
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.
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.
16 #ifndef DAVINCIHD_DISPLAY_H
17 #define DAVINCIHD_DISPLAY_H
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>
29 #define VPIF_DISPLAY_VERSION "0.0.2"
31 #define VPIF_VALID_FIELD(field) \
32 (((V4L2_FIELD_ANY == field) || (V4L2_FIELD_NONE == field)) || \
33 (((V4L2_FIELD_INTERLACED == field) || (V4L2_FIELD_SEQ_TB == field)) || \
34 (V4L2_FIELD_SEQ_BT == field)))
36 #define VPIF_DISPLAY_MAX_DEVICES (2)
37 #define VPIF_SLICED_BUF_SIZE (256)
38 #define VPIF_SLICED_MAX_SERVICES (3)
39 #define VPIF_VIDEO_INDEX (0)
40 #define VPIF_VBI_INDEX (1)
41 #define VPIF_HBI_INDEX (2)
43 /* Setting it to 1 as HBI/VBI support yet to be added , else 3*/
44 #define VPIF_NUMOBJECTS (1)
47 #define ISALIGNED(a) (0 == ((a) & 7))
49 /* enumerated data types */
50 /* Enumerated data type to give id to each device per channel */
51 enum vpif_channel_id
{
52 VPIF_CHANNEL2_VIDEO
= 0, /* Channel2 Video */
53 VPIF_CHANNEL3_VIDEO
, /* Channel3 Video */
59 enum v4l2_field buf_field
;
60 u32 latest_only
; /* indicate whether to return
61 * most recent displayed frame only */
62 v4l2_std_id stdid
; /* Currently selected or default
65 struct v4l2_bt_timings bt_timings
;
66 u32 output_id
; /* Current output id */
71 struct vpif_vbi_params vbiparams
; /* vpif parameters for the raw
76 /* Buffer specific parameters */
77 u8
*fbuffers
[VIDEO_MAX_FRAME
]; /* List of buffer pointers for
79 u32 numbuffers
; /* number of buffers */
80 struct videobuf_buffer
*cur_frm
; /* Pointer pointing to current
82 struct videobuf_buffer
*next_frm
; /* Pointer pointing to next
84 enum v4l2_memory memory
; /* This field keeps track of
85 * type of buffer exchange
86 * method user has selected */
87 struct v4l2_format fmt
; /* Used to store the format */
88 struct videobuf_queue buffer_queue
; /* Buffer queue used in
90 struct list_head dma_queue
; /* Queue of filled frames */
91 spinlock_t irqlock
; /* Used in video-buf */
93 /* channel specific parameters */
94 struct mutex lock
; /* lock used to access this
96 u32 io_usrs
; /* number of users performing
98 u8 started
; /* Indicates whether streaming
100 u32 ytop_off
; /* offset of Y top from the
101 * starting of the buffer */
102 u32 ybtm_off
; /* offset of Y bottom from the
103 * starting of the buffer */
104 u32 ctop_off
; /* offset of C top from the
105 * starting of the buffer */
106 u32 cbtm_off
; /* offset of C bottom from the
107 * starting of the buffer */
108 /* Function pointer to set the addresses */
109 void (*set_addr
) (unsigned long, unsigned long,
110 unsigned long, unsigned long);
116 /* V4l2 specific parameters */
117 struct video_device
*video_dev
; /* Identifies video device for
119 struct v4l2_prio_state prio
; /* Used to keep track of state of
121 atomic_t usrs
; /* number of open instances of
123 u32 field_id
; /* Indicates id of the field
124 * which is being displayed */
125 u8 initialized
; /* flag to indicate whether
126 * encoder is initialized */
128 enum vpif_channel_id channel_id
;/* Identifies channel */
129 struct vpif_params vpifparams
;
130 struct common_obj common
[VPIF_NUMOBJECTS
];
131 struct video_obj video
;
135 /* File handle structure */
137 struct channel_obj
*channel
; /* pointer to channel object for
139 u8 io_allowed
[VPIF_NUMOBJECTS
]; /* Indicates whether this file handle
141 enum v4l2_priority prio
; /* Used to keep track priority of
143 u8 initialized
; /* Used to keep track of whether this
144 * file handle has initialized
148 /* vpif device structure */
150 struct v4l2_device v4l2_dev
;
151 struct channel_obj
*dev
[VPIF_DISPLAY_NUM_CHANNELS
];
152 struct v4l2_subdev
**sd
;
156 struct vpif_config_params
{
157 u32 min_bufsize
[VPIF_DISPLAY_NUM_CHANNELS
];
158 u32 channel_bufsize
[VPIF_DISPLAY_NUM_CHANNELS
];
159 u8 numbuffers
[VPIF_DISPLAY_NUM_CHANNELS
];
163 /* Struct which keeps track of the line numbers for the sliced vbi service */
164 struct vpif_service_line
{
171 #endif /* DAVINCIHD_DISPLAY_H */