/*
 * This file is part of the coreboot project.
 *
 * Copyright 2016 Google Inc.
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <spi-generic.h>
#include <string.h>

int spi_claim_bus(const struct spi_slave *slave)
{
	const struct spi_ctrlr *ctrlr = slave->ctrlr;
	if (ctrlr && ctrlr->claim_bus)
		return ctrlr->claim_bus(slave);
	return 0;
}

void spi_release_bus(const struct spi_slave *slave)
{
	const struct spi_ctrlr *ctrlr = slave->ctrlr;
	if (ctrlr && ctrlr->release_bus)
		ctrlr->release_bus(slave);
}

int spi_xfer(const struct spi_slave *slave, const void *dout, size_t bytesout,
	     void *din, size_t bytesin)
{
	const struct spi_ctrlr *ctrlr = slave->ctrlr;
	if (ctrlr && ctrlr->xfer)
		return ctrlr->xfer(slave, dout, bytesout, din, bytesin);

	return -1;
}