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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2007 Advanced Micro Devices, Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* 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 <arch/io.h>
#include "cs5536.h"
#include "smbus.h"
/* initialization for SMBus Controller */
void cs5536_enable_smbus(void)
{
if (IS_ENABLED(CONFIG_NO_EARLY_SMBUS))
return;
/* Set SCL freq and enable SMB controller */
/*outb((0x20 << 1) | SMB_CTRL2_ENABLE, smbus_io_base + SMB_CTRL2); */
outb((0x7F << 1) | SMB_CTRL2_ENABLE, SMBUS_IO_BASE + SMB_CTRL2);
/* Setup SMBus host controller address to 0xEF */
outb((0xEF | SMB_ADD_SAEN), SMBUS_IO_BASE + SMB_ADD);
}
int smbus_read_byte(unsigned int device, unsigned int address)
{
return do_smbus_read_byte(SMBUS_IO_BASE, device, address);
}
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