/* SPDX-License-Identifier: (GPL-2.0+ WITH Linux-syscall-note OR MIT) */
/*
 * Copyright (c) 2019 Amlogic, Inc. All rights reserved.
 */

#ifndef __UAPI_VIDEO_TUNNEL_H
#define __UAPI_VIDEO_TUNNEL_H

#include <linux/ioctl.h>
#include <linux/types.h>

#define MAX_VIDEO_TUNNEL 16

enum vt_role_e {
	VT_ROLE_PRODUCER,
	VT_ROLE_CONSUMER,
	VT_ROLE_INVALID,
};

enum vt_ctrl_cmd_e {
	VT_CTRL_CONNECT,
	VT_CTRL_DISCONNECT,
	VT_CTRL_SEND_CMD,
	VT_CTRL_RECV_CMD,
	VT_CTRL_SET_BLOCK_MODE,
	VT_CTRL_SET_NONBLOCK_MODE,
	VT_CTRL_REPLY_CMD,
	VT_CTRL_POLL_CMD,
	VT_CTRL_CANCEL_BUFFER,
	VT_CTRL_REFRESH,
};

enum vt_video_cmd_e {
	VT_VIDEO_SET_STATUS,
	VT_VIDEO_GET_STATUS,
	VT_VIDEO_SET_GAME_MODE,
	VT_VIDEO_SET_SOURCE_CROP,
	VT_VIDEO_SET_SHOW_SOLID_COLOR,
	VT_VIDEO_SET_COLOR_BLACK,
	VT_VIDEO_SET_COLOR_BLUE,
	VT_VIDEO_SET_COLOR_GREEN,
	VT_VIDEO_SET_DISPLAY_FRAME,
	VT_VIDEO_CMD_INVALID,
};

enum vt_video_type_e {
	VT_VIDEO_TV = 0,
};

struct vt_alloc_id_data {
	int tunnel_id;
};

struct vt_krect {
	int left;
	int top;
	int right;
	int bottom;
};

struct vt_ctrl_data {
	int tunnel_id;
	enum vt_role_e role;
	enum vt_ctrl_cmd_e ctrl_cmd;
	enum vt_video_cmd_e video_cmd;
	int video_cmd_data;
	int client_id;
	struct vt_krect rect;
};

/**
 * struct vt_buffer_data - vframe buffer metadata
 * buffer data transfer between producer and consumer
 */
struct vt_buffer_data {
	int tunnel_id;
	int buffer_fd;
	int fence_fd;
	int buffer_status;
	int64_t time_stamp;
};

/*
 * struct vt_display_vsync
 * display vsync info transfer between producer and consumer
 */
struct vt_display_vsync {
	int tunnel_id;
	uint64_t timestamp;
	uint32_t period;
};

#define VT_IOC_MAGIC 'V'

/**
 * VT_IOC_ALLOC_ID - allocate tunnel id
 *
 * takes a vt_alloc_id_data struct and returns it with tunnel_id
 * field populated
 */
#define VT_IOC_ALLOC_ID _IOWR(VT_IOC_MAGIC, 0, \
				       struct vt_alloc_id_data)

/**
 * VT_IOC_FREE_ID - free tunnel id
 *
 * takes a vt_alloc_id_data struct and no return
 * free the videotunnel_instance
 */
#define VT_IOC_FREE_ID _IOWR(VT_IOC_MAGIC, 1, \
				      struct vt_alloc_id_data)

/**
 * VT_IOC_CTRL - control tunnel on and off
 * takes a vt_ctrl_data struct and no return
 * control the tunnel switch
 */
#define VT_IOC_CTRL	_IOWR(VT_IOC_MAGIC, 2, \
				      struct vt_ctrl_data)

/**
 * VT_IOC_QUEUE_BUFFER - producer queue the vframe info
 * takes a vt_buffer_item and no return
 */
#define VT_IOC_QUEUE_BUFFER	_IOWR(VT_IOC_MAGIC, 3, \
				      struct vt_buffer_data)

/**
 * VT_IOC_DEQUEUE_BUFFER - producer dequeue the vframe info
 * takes a vt_buffer_item and returns it with index field
 * populated
 */
#define VT_IOC_DEQUEUE_BUFFER	_IOWR(VT_IOC_MAGIC, 4, \
				      struct vt_buffer_data)

/**
 * VT_IOC_RELEASE_BUFFER - consumer release the vframe info
 * takes a vt_buffer_data and no return
 * the vt_buffer_item should contain the fence
 */
#define VT_IOC_RELEASE_BUFFER	_IOWR(VT_IOC_MAGIC, 5, \
				      struct vt_buffer_data)

/**
 * VT_IOC_ACQUIRE_BUFFER - consumer dequeue the vframe info
 * takes a vt_buffer_data and returns it with buffer_item field
 * populated
 */
#define VT_IOC_ACQUIRE_BUFFER	_IOWR(VT_IOC_MAGIC, 6, \
				      struct vt_buffer_data)

/**
 * VT_IOC_GET_VSYNCTIME - producer get display vsync timestamp
 * and period from videotunnel.
 */
#define VT_IOC_GET_VSYNCTIME	_IOWR(VT_IOC_MAGIC, 7, \
				      struct vt_display_vsync)

/**
 * VT_IOC_SET_VSYNCTIME - consumer set display vsync timestamp
 * and period to videotunnel.
 */
#define VT_IOC_SET_VSYNCTIME	_IOWR(VT_IOC_MAGIC, 8, \
				      struct vt_display_vsync)
#endif