remarkable-linux/include/media/vsp1.h

/*
 * vsp1.h  --  R-Car VSP1 API
 *
 * Copyright (C) 2015 Renesas Electronics Corporation
 *
 * Contact: Laurent Pinchart (laurent.pinchart@ideasonboard.com)
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */
#ifndef __MEDIA_VSP1_H__
#define __MEDIA_VSP1_H__

#include <linux/types.h>
#include <linux/videodev2.h>

struct device;

int vsp1_du_init(struct device *dev);

int vsp1_du_setup_lif(struct device *dev, unsigned int width,
		      unsigned int height);

struct vsp1_du_atomic_config {
	u32 pixelformat;
	unsigned int pitch;
	dma_addr_t mem[2];
	struct v4l2_rect src;
	struct v4l2_rect dst;
	unsigned int alpha;
	unsigned int zpos;
};

void vsp1_du_atomic_begin(struct device *dev);
int __vsp1_du_atomic_update(struct device *dev, unsigned int rpf,
			    const struct vsp1_du_atomic_config *cfg);
void vsp1_du_atomic_flush(struct device *dev);

static inline int vsp1_du_atomic_update_old(struct device *dev,
	unsigned int rpf, u32 pixelformat, unsigned int pitch,
	dma_addr_t mem[2], const struct v4l2_rect *src,
	const struct v4l2_rect *dst)
{
	struct vsp1_du_atomic_config cfg = {
		.pixelformat = pixelformat,
		.pitch = pitch,
		.mem[0] = mem[0],
		.mem[1] = mem[1],
		.src = *src,
		.dst = *dst,
		.alpha = 255,
		.zpos = 0,
	};

	return __vsp1_du_atomic_update(dev, rpf, &cfg);
}

#define _vsp1_du_atomic_update(_1, _2, _3, _4, _5, _6, _7, f, ...) f
#define vsp1_du_atomic_update(...) \
	_vsp1_du_atomic_update(__VA_ARGS__, vsp1_du_atomic_update_old, 0, 0, \
			       0, __vsp1_du_atomic_update)(__VA_ARGS__)

#endif /* __MEDIA_VSP1_H__ */