/*      $OpenBSD: video_if.h,v 1.19 2022/03/21 19:22:40 miod Exp $      */
/*
 * Copyright (c) 2008 Robert Nagy <robert@openbsd.org>
 * Copyright (c) 2008 Marcus Glocker <mglocker@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#ifndef _SYS_DEV_VIDEO_IF_H
#define _SYS_DEV_VIDEO_IF_H

/*
 * Generic interface to hardware driver
 */

#define VIDEOUNIT(x)    (minor(x))

struct video_hw_if {
        /* open hardware */
        int     (*open)(void *, int, int *, uint8_t *, void (*)(void *),
                    void *);

        /* close hardware */
        int     (*close)(void *);

        /* ioctl's */
        int     (*querycap)(void *, struct v4l2_capability *);
        int     (*enum_fmt)(void *, struct v4l2_fmtdesc *);
        int     (*enum_fsizes)(void *, struct v4l2_frmsizeenum *);
        int     (*enum_fivals)(void *, struct v4l2_frmivalenum *);
        int     (*s_fmt)(void *, struct v4l2_format *);
        int     (*g_fmt)(void *, struct v4l2_format *);
        int     (*s_parm)(void *, struct v4l2_streamparm *);
        int     (*g_parm)(void *, struct v4l2_streamparm *);
        int     (*enum_input)(void *, struct v4l2_input *);
        int     (*s_input)(void *, int);
        int     (*g_input)(void *, int *);
        int     (*reqbufs)(void *, struct v4l2_requestbuffers *);
        int     (*querybuf)(void *, struct v4l2_buffer *);
        int     (*qbuf)(void *, struct v4l2_buffer *);
        int     (*dqbuf)(void *, struct v4l2_buffer *);
        int     (*streamon)(void *, int);
        int     (*streamoff)(void *, int);
        int     (*try_fmt)(void *, struct v4l2_format *);
        int     (*queryctrl)(void *, struct v4l2_queryctrl *);
        int     (*g_ctrl)(void *, struct v4l2_control *);
        int     (*s_ctrl)(void *, struct v4l2_control *);
        caddr_t (*mappage)(void *, off_t, int);

        /* other functions */
        int     (*get_bufsize)(void *);
        int     (*start_read)(void *);
};

struct video_attach_args {
        const void *hwif;
        void    *hdl;
};

struct device  *video_attach_mi(const struct video_hw_if *, void *,
            struct device *);

#endif /* _SYS_DEV_VIDEO_IF_H */