drivers/media/platform/davinci/vpif_display.h

   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         /* allocator-specific contexts for each plane */
  78         struct vb2_alloc_ctx *alloc_ctx;
  79
  80         struct list_head dma_queue;             /* Queue of filled frames */
  81         spinlock_t irqlock;                     /* Used in video-buf */
  82
  83         /* channel specific parameters */
  84         struct mutex lock;                      /* lock used to access this
  85                                                  * structure */
  86         u32 ytop_off;                           /* offset of Y top from the
  87                                                  * starting of the buffer */
  88         u32 ybtm_off;                           /* offset of Y bottom from the
  89                                                  * starting of the buffer */
  90         u32 ctop_off;                           /* offset of C top from the
  91                                                  * starting of the buffer */
  92         u32 cbtm_off;                           /* offset of C bottom from the
  93                                                  * starting of the buffer */
  94         /* Function pointer to set the addresses */
  95         void (*set_addr)(unsigned long, unsigned long,
  96                                 unsigned long, unsigned long);
  97         u32 height;
  98         u32 width;
  99 };
 100
 101 struct channel_obj {
 102         /* V4l2 specific parameters */
 103         struct video_device video_dev;  /* Identifies video device for
 104                                          * this channel */
 105         u32 field_id;                   /* Indicates id of the field
 106                                          * which is being displayed */
 107         u8 initialized;                 /* flag to indicate whether
 108                                          * encoder is initialized */
 109         u32 output_idx;                 /* Current output index */
 110         struct v4l2_subdev *sd;         /* Current output subdev(may be NULL) */
 111
 112         enum vpif_channel_id channel_id;/* Identifies channel */
 113         struct vpif_params vpifparams;
 114         struct common_obj common[VPIF_NUMOBJECTS];
 115         struct video_obj video;
 116 };
 117
 118 /* vpif device structure */
 119 struct vpif_device {
 120         struct v4l2_device v4l2_dev;
 121         struct channel_obj *dev[VPIF_DISPLAY_NUM_CHANNELS];
 122         struct v4l2_subdev **sd;
 123         struct v4l2_async_notifier notifier;
 124         struct vpif_display_config *config;
 125 };
 126
 127 #endif                          /* VPIF_DISPLAY_H */