| /* |
| * This file is part of the coreboot project. |
| * |
| * Copyright (C) 2004 Tyan Computer |
| * Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer. |
| * Copyright (C) 2006,2007 AMD |
| * Written by Yinghai Lu <yinghai.lu@amd.com> for AMD. |
| * Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS) |
| * Written by Morgan Tsai <my_tsai@sis.com> for SiS. |
| * |
| * 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; either version 2 of the License, or |
| * (at your option) any later version. |
| * |
| * 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 |
| */ |
| |
| #include <device/smbus_def.h> |
| |
| #define SMBHSTSTAT 0x1 |
| #define SMBHSTPRTCL 0x0 |
| #define SMBHSTCMD 0x3 |
| #define SMBXMITADD 0x2 |
| #define SMBHSTDAT0 0x4 |
| #define SMBHSTDAT1 0x5 |
| |
| /* 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) |
| |
| int smbus_wait_until_ready(unsigned smbus_io_base); |
| int smbus_wait_until_done(unsigned smbus_io_base); |
| int do_smbus_recv_byte(unsigned smbus_io_base, unsigned device); |
| int do_smbus_send_byte(unsigned smbus_io_base, unsigned device, unsigned char val); |
| int smbus_read_byte(unsigned device, unsigned address); |
| int smbus_write_byte(unsigned device, unsigned address, unsigned char val); |
| |
