drivers/media/video/davinci/vpif_display.h

   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 */
  57 enum vpif_channel_id {
  58         VPIF_CHANNEL2_VIDEO = 0,        /* Channel2 Video */
  59         VPIF_CHANNEL3_VIDEO,            /* Channel3 Video */
  60 };
  61
  62 /* structures */
  63
  64 struct 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 output_id;                  /* Current output id */
  71 };
  72
  73 struct vbi_obj {
  74         int num_services;
  75         struct vpif_vbi_params vbiparams;       /* vpif parameters for the raw
  76                                                  * vbi data */
  77 };
  78
  79 struct common_obj {
  80         /* Buffer specific parameters */
  81         u8 *fbuffers[VIDEO_MAX_FRAME];          /* List of buffer pointers for
  82                                                  * storing frames */
  83         u32 numbuffers;                         /* number of buffers */
  84         struct videobuf_buffer *cur_frm;        /* Pointer pointing to current
  85                                                  * videobuf_buffer */
  86         struct videobuf_buffer *next_frm;       /* Pointer pointing to next
  87                                                  * videobuf_buffer */
  88         enum v4l2_memory memory;                /* This field keeps track of
  89                                                  * type of buffer exchange
  90                                                  * method user has selected */
  91         struct v4l2_format fmt;                 /* Used to store the format */
  92         struct videobuf_queue buffer_queue;     /* Buffer queue used in
  93                                                  * video-buf */
  94         struct list_head dma_queue;             /* Queue of filled frames */
  95         spinlock_t irqlock;                     /* Used in video-buf */
  96
  97         /* channel specific parameters */
  98         struct mutex lock;                      /* lock used to access this
  99                                                  * structure */
 100         u32 io_usrs;                            /* number of users performing
 101                                                  * IO */
 102         u8 started;                             /* Indicates whether streaming
 103                                                  * started */
 104         u32 ytop_off;                           /* offset of Y top from the
 105                                                  * starting of the buffer */
 106         u32 ybtm_off;                           /* offset of Y bottom from the
 107                                                  * starting of the buffer */
 108         u32 ctop_off;                           /* offset of C top from the
 109                                                  * starting of the buffer */
 110         u32 cbtm_off;                           /* offset of C bottom from the
 111                                                  * starting of the buffer */
 112         /* Function pointer to set the addresses */
 113         void (*set_addr) (unsigned long, unsigned long,
 114                                 unsigned long, unsigned long);
 115         u32 height;
 116         u32 width;
 117 };
 118
 119 struct channel_obj {
 120         /* V4l2 specific parameters */
 121         struct video_device *video_dev; /* Identifies video device for
 122                                          * this channel */
 123         struct v4l2_prio_state prio;    /* Used to keep track of state of
 124                                          * the priority */
 125         atomic_t usrs;                  /* number of open instances of
 126                                          * the channel */
 127         u32 field_id;                   /* Indicates id of the field
 128                                          * which is being displayed */
 129         u8 initialized;                 /* flag to indicate whether
 130                                          * encoder is initialized */
 131
 132         enum vpif_channel_id channel_id;/* Identifies channel */
 133         struct vpif_params vpifparams;
 134         struct common_obj common[VPIF_NUMOBJECTS];
 135         struct video_obj video;
 136         struct vbi_obj vbi;
 137 };
 138
 139 /* File handle structure */
 140 struct vpif_fh {
 141         struct channel_obj *channel;    /* pointer to channel object for
 142                                          * opened device */
 143         u8 io_allowed[VPIF_NUMOBJECTS]; /* Indicates whether this file handle
 144                                          * is doing IO */
 145         enum v4l2_priority prio;        /* Used to keep track priority of
 146                                          * this instance */
 147         u8 initialized;                 /* Used to keep track of whether this
 148                                          * file handle has initialized
 149                                          * channel or not */
 150 };
 151
 152 /* vpif device structure */
 153 struct vpif_device {
 154         struct v4l2_device v4l2_dev;
 155         struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
 156         struct v4l2_subdev **sd;
 157
 158 };
 159
 160 struct vpif_config_params {
 161         u32 min_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
 162         u32 channel_bufsize[VPIF_DISPLAY_NUM_CHANNELS];
 163         u8 numbuffers[VPIF_DISPLAY_NUM_CHANNELS];
 164         u8 min_numbuffers;
 165 };
 166
 167 /* Struct which keeps track of the line numbers for the sliced vbi service */
 168 struct vpif_service_line {
 169         u16 service_id;
 170         u16 service_line[2];
 171         u16 enc_service_id;
 172         u8 bytestowrite;
 173 };
 174
 175 #endif                          /* DAVINCIHD_DISPLAY_H */