2 * This file is part of the coreboot project.
4 * Copyright (C) 2011 The Chromium OS Authors. All rights reserved.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; version 2 of the License.
10 * This program is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 * GNU General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19 * Mailbox EC communication interface for SMSC MEC1308 Embedded Controller.
22 #ifndef _EC_SMSC_MEC1308_EC_H
23 #define _EC_SMSC_MEC1308_EC_H
25 #define EC_TIMEOUT 0xfff
26 #define EC_MAILBOX_COMMAND 0x82 // Send a command
27 #define EC_MAILBOX_DATA 0x84 // Send data with a command
28 #define EC_MAILBOX_DATA_H 0x85 // Send data with a command
29 #define EC_RAM_READ 0x88 // Read from RAM
30 #define EC_RAM_WRITE 0x89 // Write to RAM
32 int send_ec_command(u8 command);
33 int send_ec_command_data(u8 command, u8 data);
34 u8 read_ec_command_byte(u8 command);
36 int ec_write(u8 addr, u8 data);
37 void ec_set_bit(u8 addr, u8 bit);
38 void ec_clr_bit(u8 addr, u8 bit);
39 void ec_set_ports(u16 cmd_reg, u16 data_reg);
41 #endif /* _EC_SMSC_MEC1308_EC_H */