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* This file is part of the coreboot project.
* Copyright (C) 2008-2009 coresystems GmbH
* 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
* 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
#ifndef _EC_ACPI_H
#define _EC_ACPI_H
#define EC_DATA 0x62
#define EC_SC 0x66
/* EC_SC input */
#define EC_SMI_EVT (1 << 6) // 1: SMI event pending
#define EC_SCI_EVT (1 << 5) // 1: SCI event pending
#define EC_BURST (1 << 4) // controller is in burst mode
#define EC_CMD (1 << 3) // 1: byte in data register is command
// 0: byte in data register is data
#define EC_IBF (1 << 1) // 1: input buffer full (data ready for ec)
#define EC_OBF (1 << 0) // 1: output buffer full (data ready for host)
/* EC_SC output */
#define RD_EC 0x80 // Read Embedded Controller
#define WR_EC 0x81 // Write Embedded Controller
#define BE_EC 0x82 // Burst Enable Embedded Controller
#define BD_EC 0x83 // Burst Disable Embedded Controller
#define QR_EC 0x84 // Query Embedded Controller
int send_ec_command(u8 command);
int send_ec_data(u8 data);
int send_ec_data_nowait(u8 data);
u8 recv_ec_data(void);
u8 ec_query(void);
u8 ec_read(u8 addr);
int ec_write(u8 addr, u8 data);
void ec_set_bit(u8 addr, u8 bit);
void ec_clr_bit(u8 addr, u8 bit);
void ec_set_ports(u16 cmd_reg, u16 data_reg);