/*
 * This file is part of the coreboot project.
 *
 * Copyright (C) 2005 Yinghai Lu <yinghailu@gmail.com>
 * Copyright (C) 2009 coresystems GmbH
 * Copyright (C) 2014 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; version 2 of the License.
 *
 * 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.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
 */

#ifndef _BROADWELL_SMBUS_H_
#define _BROADWELL_SMBUS_H_

/* PCI Configuration Space (D31:F3): SMBus */
#define SMB_BASE		0x20
#define HOSTC			0x40
#define  HST_EN			(1 << 0)
#define SMB_RCV_SLVA		0x09

/* SMBus I/O bits. */
#define SMBHSTSTAT		0x0
#define SMBHSTCTL		0x2
#define SMBHSTCMD		0x3
#define SMBXMITADD		0x4
#define SMBHSTDAT0		0x5
#define SMBHSTDAT1		0x6
#define SMBBLKDAT		0x7
#define SMBTRNSADD		0x9
#define SMBSLVDATA		0xa
#define SMLINK_PIN_CTL		0xe
#define SMBUS_PIN_CTL		0xf

#define SMBUS_TIMEOUT		(10 * 1000 * 100)
#define SMBUS_SLAVE_ADDR	0x24

int do_smbus_read_byte(unsigned smbus_base, unsigned device,
		       unsigned address);
int do_smbus_write_byte(unsigned smbus_base, unsigned device,
			unsigned address, unsigned data);

#endif
