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/*
* This file is part of the coreboot project.
*
* Copyright (C) 2010 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 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 __STONEYRIDGE_SMBUS_H__
#define __STONEYRIDGE_SMBUS_H__
#include <stdint.h>
#include <soc/iomap.h>
#define SMB_SPEED_400KHZ (66000000 / (400000 * 4))
#define AX_INDXC 0
#define AX_INDXP 2
#define AXCFG 4
#define ABCFG 6
#define RC_INDXC 1
#define RC_INDXP 3
/*
* Between 1-10 seconds, We should never timeout normally
* Longer than this is just painful when a timeout condition occurs.
*/
#define SMBUS_TIMEOUT (100 * 1000 * 10)
#define abcfg_reg(reg, mask, val) \
alink_ab_indx((ABCFG), (reg), (mask), (val))
#define axcfg_reg(reg, mask, val) \
alink_ab_indx((AXCFG), (reg), (mask), (val))
#define axindxc_reg(reg, mask, val) \
alink_ax_indx((AX_INDXC), (reg), (mask), (val))
#define axindxp_reg(reg, mask, val) \
alink_ax_indx((AX_INDXP), (reg), (mask), (val))
#define rcindxc_reg(reg, port, mask, val) \
alink_rc_indx((RC_INDXC), (reg), (port), (mask), (val))
#define rcindxp_reg(reg, port, mask, val) \
alink_rc_indx((RC_INDXP), (reg), (port), (mask), (val))
int do_smbus_read_byte(u32 mmio, u8 device, u8 address);
int do_smbus_write_byte(u32 mmio, u8 device, u8 address, u8 val);
int do_smbus_recv_byte(u32 mmio, u8 device);
int do_smbus_send_byte(u32 mmio, u8 device, u8 val);
void alink_rc_indx(u32 reg_space, u32 reg_addr, u32 port, u32 mask, u32 val);
void alink_ab_indx(u32 reg_space, u32 reg_addr, u32 mask, u32 val);
void alink_ax_indx(u32 space /*c or p? */, u32 axindc, u32 mask, u32 val);
#endif /* __STONEYRIDGE_SMBUS_H__ */