LXR linux/drivers/media/platform/davinci/vpif

   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_v4l2_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        /* Queue of filled frames */
  69        struct list_head dma_queue;
  70        /* Used in video-buf */
  71        spinlock_t irqlock;
  72        /* lock used to access this structure */
  73        struct mutex lock;
  74        /* Function pointer to set the addresses */
  75        void (*set_addr) (unsigned long, unsigned long, unsigned long,
  76                          unsigned long);
  77        /* offset where Y top starts from the starting of the buffer */
  78        u32 ytop_off;
  79        /* offset where Y bottom starts from the starting of the buffer */
  80        u32 ybtm_off;
  81        /* offset where C top starts from the starting of the buffer */
  82        u32 ctop_off;
  83        /* offset where C bottom starts from the starting of the buffer */
  84        u32 cbtm_off;
  85        /* Indicates width of the image data */
  86        u32 width;
  87        /* Indicates height of the image data */
  88        u32 height;
  89};
  90
  91struct channel_obj {
  92        /* Identifies video device for this channel */
  93        struct video_device video_dev;
  94        /* Indicates id of the field which is being displayed */
  95        u32 field_id;
  96        /* flag to indicate whether decoder is initialized */
  97        u8 initialized;
  98        /* Identifies channel */
  99        enum vpif_channel_id channel_id;
 100        /* Current input */
 101        u32 input_idx;
 102        /* subdev corresponding to the current input, may be NULL */
 103        struct v4l2_subdev *sd;
 104        /* vpif configuration params */
 105        struct vpif_params vpifparams;
 106        /* common object array */
 107        struct common_obj common[VPIF_NUMBER_OF_OBJECTS];
 108        /* video object */
 109        struct video_obj video;
 110};
 111
 112struct vpif_device {
 113        struct v4l2_device v4l2_dev;
 114        struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
 115        struct v4l2_subdev **sd;
 116        struct v4l2_async_notifier notifier;
 117        struct vpif_capture_config *config;
 118};
 119
 120#endif                          /* VPIF_CAPTURE_H */
 121