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/*
* Copyright (C) 2009 Texas Instruments Inc
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef VPIF_CAPTURE_H
#define VPIF_CAPTURE_H
#ifdef __KERNEL__
/* Header files */
#include <media/videobuf2-dma-contig.h>
#include <media/v4l2-device.h>
#include "vpif.h"
/* Macros */
#define VPIF_CAPTURE_VERSION "0.0.2"
#define VPIF_VALID_FIELD(field) (((V4L2_FIELD_ANY == field) || \
(V4L2_FIELD_NONE == field)) || \
(((V4L2_FIELD_INTERLACED == field) || \
(V4L2_FIELD_SEQ_TB == field)) || \
(V4L2_FIELD_SEQ_BT == field)))
#define VPIF_CAPTURE_MAX_DEVICES 2
#define VPIF_VIDEO_INDEX 0
#define VPIF_NUMBER_OF_OBJECTS 1
/* Enumerated data type to give id to each device per channel */
enum vpif_channel_id {
VPIF_CHANNEL0_VIDEO = 0,
VPIF_CHANNEL1_VIDEO,
};
struct video_obj {
enum v4l2_field buf_field;
/* Currently selected or default standard */
v4l2_std_id stdid;
struct v4l2_dv_timings dv_timings;
};
struct vpif_cap_buffer {
struct vb2_buffer vb;
struct list_head list;
};
struct common_obj {
/* Pointer pointing to current v4l2_buffer */
struct vpif_cap_buffer *cur_frm;
/* Pointer pointing to current v4l2_buffer */
struct vpif_cap_buffer *next_frm;
/*
* This field keeps track of type of buffer exchange mechanism
* user has selected
*/
enum v4l2_memory memory;
/* Used to store pixel format */
struct v4l2_format fmt;
/* Buffer queue used in video-buf */
struct vb2_queue buffer_queue;
/* allocator-specific contexts for each plane */
struct vb2_alloc_ctx *alloc_ctx;
/* Queue of filled frames */
struct list_head dma_queue;
/* Used in video-buf */
spinlock_t irqlock;
/* lock used to access this structure */
struct mutex lock;
/* number of users performing IO */
u32 io_usrs;
/* Indicates whether streaming started */
u8 started;
/* Function pointer to set the addresses */
void (*set_addr) (unsigned long, unsigned long, unsigned long,
unsigned long);
/* offset where Y top starts from the starting of the buffer */
u32 ytop_off;
/* offset where Y bottom starts from the starting of the buffer */
u32 ybtm_off;
/* offset where C top starts from the starting of the buffer */
u32 ctop_off;
/* offset where C bottom starts from the starting of the buffer */
u32 cbtm_off;
/* Indicates width of the image data */
u32 width;
/* Indicates height of the image data */
u32 height;
};
struct channel_obj {
/* Identifies video device for this channel */
struct video_device *video_dev;
/* Used to keep track of state of the priority */
struct v4l2_prio_state prio;
/* number of open instances of the channel */
int usrs;
/* Indicates id of the field which is being displayed */
u32 field_id;
/* flag to indicate whether decoder is initialized */
u8 initialized;
/* Identifies channel */
enum vpif_channel_id channel_id;
/* Current input */
u32 input_idx;
/* subdev corresponding to the current input, may be NULL */
struct v4l2_subdev *sd;
/* vpif configuration params */
struct vpif_params vpifparams;
/* common object array */
struct common_obj common[VPIF_NUMBER_OF_OBJECTS];
/* video object */
struct video_obj video;
};
/* File handle structure */
struct vpif_fh {
/* pointer to channel object for opened device */
struct channel_obj *channel;
/* Indicates whether this file handle is doing IO */
u8 io_allowed[VPIF_NUMBER_OF_OBJECTS];
/* Used to keep track priority of this instance */
enum v4l2_priority prio;
/* Used to indicate channel is initialize or not */
u8 initialized;
};
struct vpif_device {
struct v4l2_device v4l2_dev;
struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
struct v4l2_subdev **sd;
};
struct vpif_config_params {
u8 min_numbuffers;
u8 numbuffers[VPIF_CAPTURE_NUM_CHANNELS];
s8 device_type;
u32 min_bufsize[VPIF_CAPTURE_NUM_CHANNELS];
u32 channel_bufsize[VPIF_CAPTURE_NUM_CHANNELS];
u8 default_device[VPIF_CAPTURE_NUM_CHANNELS];
u32 video_limit[VPIF_CAPTURE_NUM_CHANNELS];
u8 max_device_type;
};
#endif /* End of __KERNEL__ */
#endif /* VPIF_CAPTURE_H */
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