/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (c) 2011-2018 Magewell Electronics Co., Ltd. (Nanjing)
 * Author: Yong Deng <yong.deng@magewell.com>
 * Copyright 2021-2022 Bootlin
 * Author: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
 */

#ifndef _SUN6I_CAPTURE_H_
#define _SUN6I_CAPTURE_H_

#include <media/v4l2-device.h>

#define SUN6I_CSI_CAPTURE_NAME  "sun6i-csi-capture"

#define SUN6I_CSI_CAPTURE_WIDTH_MIN     32
#define SUN6I_CSI_CAPTURE_WIDTH_MAX     4800
#define SUN6I_CSI_CAPTURE_HEIGHT_MIN    32
#define SUN6I_CSI_CAPTURE_HEIGHT_MAX    4800

struct sun6i_csi_device;

struct sun6i_csi_capture_format {
        u32     pixelformat;
        u8      output_format_field;
        u8      output_format_frame;
        bool    input_yuv_seq_invert;
        bool    input_format_raw;
        u32     hsize_len_factor;
};

struct sun6i_csi_capture_format_match {
        u32     pixelformat;
        u32     mbus_code;
};

#undef current
struct sun6i_csi_capture_state {
        struct list_head                queue;
        spinlock_t                      lock; /* Queue and buffers lock. */

        struct sun6i_csi_buffer         *pending;
        struct sun6i_csi_buffer         *current;
        struct sun6i_csi_buffer         *complete;

        unsigned int                    sequence;
        bool                            streaming;
        bool                            setup;
};

struct sun6i_csi_capture {
        struct sun6i_csi_capture_state  state;

        struct video_device             video_dev;
        struct vb2_queue                queue;
        struct mutex                    lock; /* Queue lock. */
        struct media_pad                pad;

        struct v4l2_format              format;
};

/* Helpers */

void sun6i_csi_capture_dimensions(struct sun6i_csi_device *csi_dev,
                                  unsigned int *width, unsigned int *height);
void sun6i_csi_capture_format(struct sun6i_csi_device *csi_dev,
                              u32 *pixelformat, u32 *field);

/* Format */

const
struct sun6i_csi_capture_format *sun6i_csi_capture_format_find(u32 pixelformat);

/* Capture */

void sun6i_csi_capture_configure(struct sun6i_csi_device *csi_dev);
void sun6i_csi_capture_state_update(struct sun6i_csi_device *csi_dev);

/* State */

void sun6i_csi_capture_sync(struct sun6i_csi_device *csi_dev);
void sun6i_csi_capture_frame_done(struct sun6i_csi_device *csi_dev);

/* Capture */

int sun6i_csi_capture_setup(struct sun6i_csi_device *csi_dev);
void sun6i_csi_capture_cleanup(struct sun6i_csi_device *csi_dev);

#endif