src/soc/qualcomm/ipq40xx/blsp.c

/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2014 - 2016 The Linux Foundation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials provided
 *       with the distribution.
 *     * Neither the name of The Linux Foundation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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 */

#include <soc/blsp.h>
#include <soc/clock.h>

blsp_return_t blsp_i2c_init(blsp_qup_id_t id)
{
	void *base = blsp_qup_base(id);

	if (!base)
		return BLSP_ID_ERROR;

	if (blsp_i2c_clock_config(id) != 0)
		return BLSP_ID_ERROR;

	if (blsp_i2c_init_board(id))
		return BLSP_UNSUPPORTED;

	/* Configure Mini core to I2C core */
	clrsetbits_le32(base, BLSP_MINI_CORE_MASK, BLSP_MINI_CORE_I2C);

	return BLSP_SUCCESS;
}