73451fdea2
Change-Id: I7dddb61fab00e0f4f67d4eebee0cfe8dcd99f4ab Signed-off-by: Kyösti Mälkki <kyosti.malkki@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/38230 Reviewed-by: Angel Pons <th3fanbus@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
41 lines
1.5 KiB
C
41 lines
1.5 KiB
C
/*
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* This file is part of the coreboot project.
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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; version 2 of the License.
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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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#ifndef __DEVICE_SMBUS_HOST_H__
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#define __DEVICE_SMBUS_HOST_H__
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#include <stdint.h>
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/* Low-level SMBUS host controller. */
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int do_smbus_recv_byte(uintptr_t base, u8 device);
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int do_smbus_send_byte(uintptr_t base, u8 device, u8 val);
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int do_smbus_read_byte(uintptr_t base, u8 device, u8 address);
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int do_smbus_write_byte(uintptr_t base, u8 device, u8 address, u8 data);
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int do_smbus_read_word(uintptr_t base, u8 device, u8 address);
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int do_smbus_write_word(uintptr_t base, u8 device, u8 address, u16 data);
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int do_smbus_block_read(uintptr_t base, u8 device, u8 cmd, size_t max_bytes, u8 *buf);
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int do_smbus_block_write(uintptr_t base, u8 device, u8 cmd, size_t bytes, const u8 *buf);
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/* For Intel, implemented since ICH5. */
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int do_i2c_eeprom_read(uintptr_t base, u8 device, u8 offset, size_t bytes, u8 *buf);
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int do_i2c_block_write(uintptr_t base, u8 device, size_t bytes, u8 *buf);
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/* Upstream API */
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void smbus_host_reset(uintptr_t base);
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void smbus_set_slave_addr(uintptr_t base, u8 slave_address);
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#endif
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