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