57 lines
1.8 KiB
C
57 lines
1.8 KiB
C
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/*
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* This file is part of the coreboot project.
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*
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* Copyright (C) 2012 The Chromium OS Authors. All rights reserved.
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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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* 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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/*
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* EC communication interface for COMPAL ENE932 Embedded Controller.
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*/
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#ifndef _EC_COMPAL_ENE932_EC_H
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#define _EC_COMPAL_ENE932_EC_H
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#define EC_IO 0xfd60 /* Mainboard specific. Could be Kconfig option */
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#define EC_IO_HIGH EC_IO + 1
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#define EC_IO_LOW EC_IO + 2
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#define EC_IO_DATA EC_IO + 3
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/* ENE EC internal address space */
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#define REG_SPI_DATA 0xfeab
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#define REG_SPI_COMMAND 0xfeac
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#define REG_SPI_CONFIG 0xfead
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#define CFG_CSn_FORCE_LOW (1 << 4)
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#define CFG_COMMAND_WRITE_ENABLE (1 << 3)
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#define CFG_STATUS (1 << 1)
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#define KBD_DATA 0x60
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#define KBD_COMMAND 0x64
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#define KBD_STATUS 0x64
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#define KBD_IBF (1 << 1) // 1: input buffer full (data ready for ec)
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#define KBD_OBF (1 << 0) // 1: output buffer full (data ready for host)
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/* Wait 400ms for keyboard controller answers */
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#define KBC_TIMEOUT_IN_MS 400
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u8 ec_kbc_read_ob(void);
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void ec_kbc_write_cmd(u8 cmd);
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void ec_kbc_write_ib(u8 data);
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int kbc_cleanup_buffers(void);
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#endif /* _EC_COMPAL_ENE932_EC_H */
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