/*
 * This file is part of the coreboot project.
 *
 * 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.
 */

#ifndef __DEVICE_SMBUS_HOST_H__
#define __DEVICE_SMBUS_HOST_H__

#include <stdint.h>

/* Low-level SMBUS host controller. */

int do_smbus_recv_byte(uintptr_t base, u8 device);
int do_smbus_send_byte(uintptr_t base, u8 device, u8 val);
int do_smbus_read_byte(uintptr_t base, u8 device, u8 address);
int do_smbus_write_byte(uintptr_t base, u8 device, u8 address, u8 data);
int do_smbus_read_word(uintptr_t base, u8 device, u8 address);
int do_smbus_write_word(uintptr_t base, u8 device, u8 address, u16 data);

int do_smbus_block_read(uintptr_t base, u8 device, u8 cmd, size_t max_bytes, u8 *buf);
int do_smbus_block_write(uintptr_t base, u8 device, u8 cmd, size_t bytes, const u8 *buf);

/* For Intel, implemented since ICH5. */
int do_i2c_eeprom_read(uintptr_t base, u8 device, u8 offset, size_t bytes, u8 *buf);
int do_i2c_block_write(uintptr_t base, u8 device, size_t bytes, u8 *buf);

/* Upstream API */

void smbus_host_reset(uintptr_t base);


#endif