/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * Copyright (C) 2009 Texas Instruments Inc
 */

#ifndef VPIF_CAPTURE_H
#define VPIF_CAPTURE_H

/* 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_v4l2_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;
        /* Used to store pixel format */
        struct v4l2_format fmt;
        /* Buffer queue used in vb2 */
        struct vb2_queue buffer_queue;
        /* Queue of filled frames */
        struct list_head dma_queue;
        /* Protects the dma_queue field */
        spinlock_t irqlock;
        /* lock used to access this structure */
        struct mutex lock;
        /* 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;
        /* 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;
};

struct vpif_device {
        struct v4l2_device v4l2_dev;
        struct channel_obj *dev[VPIF_CAPTURE_NUM_CHANNELS];
        struct v4l2_subdev **sd;
        struct v4l2_async_notifier notifier;
        struct vpif_capture_config *config;
};

#endif                          /* VPIF_CAPTURE_H */