/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright 2021-2022 Bootlin
 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 */

#ifndef _SUN6I_ISP_PROC_H_
#define _SUN6I_ISP_PROC_H_

#include <media/v4l2-device.h>
#include <media/v4l2-fwnode.h>

#define SUN6I_ISP_PROC_NAME             "sun6i-isp-proc"

enum sun6i_isp_proc_pad {
        SUN6I_ISP_PROC_PAD_SINK_CSI     = 0,
        SUN6I_ISP_PROC_PAD_SINK_PARAMS  = 1,
        SUN6I_ISP_PROC_PAD_SOURCE       = 2,
        SUN6I_ISP_PROC_PAD_COUNT        = 3,
};

struct sun6i_isp_device;

struct sun6i_isp_proc_format {
        u32     mbus_code;
        u8      input_format;
        u8      input_yuv_seq;
};

struct sun6i_isp_proc_source {
        struct v4l2_subdev              *subdev;
        struct v4l2_fwnode_endpoint     endpoint;
        bool                            expected;
};

struct sun6i_isp_proc_async_subdev {
        struct v4l2_async_connection    async_subdev;
        struct sun6i_isp_proc_source    *source;
};

struct sun6i_isp_proc {
        struct v4l2_subdev              subdev;
        struct media_pad                pads[3];
        struct v4l2_async_notifier      notifier;
        struct v4l2_mbus_framefmt       mbus_format;
        struct mutex                    lock; /* Mbus format lock. */

        struct sun6i_isp_proc_source    source_csi0;
        struct sun6i_isp_proc_source    source_csi1;
};

/* Helpers */

void sun6i_isp_proc_dimensions(struct sun6i_isp_device *isp_dev,
                               unsigned int *width, unsigned int *height);

/* Format */

const struct sun6i_isp_proc_format *sun6i_isp_proc_format_find(u32 mbus_code);

/* Proc */

int sun6i_isp_proc_setup(struct sun6i_isp_device *isp_dev);
void sun6i_isp_proc_cleanup(struct sun6i_isp_device *isp_dev);

#endif