264d265d9c
Change-Id: I5484ebb665453777cc3b2561be6e50c787f1a257 Signed-off-by: Edward O'Callaghan <eocallaghan@alterapraxis.com> Reviewed-on: http://review.coreboot.org/6209 Tested-by: build bot (Jenkins) Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>
45 lines
1.7 KiB
C
45 lines
1.7 KiB
C
/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2004 Tyan Computer
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* Written by Yinghai Lu <yhlu@tyan.com> for Tyan Computer.
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* Copyright (C) 2006,2007 AMD
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* Written by Yinghai Lu <yinghai.lu@amd.com> for AMD.
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* Copyright (C) 2007 Silicon Integrated Systems Corp. (SiS)
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* Written by Morgan Tsai <my_tsai@sis.com> for SiS.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <device/smbus_def.h>
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#define SMBHSTSTAT 0x1
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#define SMBHSTPRTCL 0x0
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#define SMBHSTCMD 0x3
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#define SMBXMITADD 0x2
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#define SMBHSTDAT0 0x4
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#define SMBHSTDAT1 0x5
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/* Between 1-10 seconds, We should never timeout normally
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* Longer than this is just painful when a timeout condition occurs.
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*/
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#define SMBUS_TIMEOUT (100*1000*10)
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int smbus_wait_until_ready(unsigned smbus_io_base);
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int smbus_wait_until_done(unsigned smbus_io_base);
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int do_smbus_recv_byte(unsigned smbus_io_base, unsigned device);
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int do_smbus_send_byte(unsigned smbus_io_base, unsigned device, unsigned char val);
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int smbus_read_byte(unsigned device, unsigned address);
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int smbus_write_byte(unsigned device, unsigned address, unsigned char val);
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