Stefan Reinauer | d8a5fd2 | 2012-12-11 15:51:47 -0800 | [diff] [blame] | 1 | /* |
| 2 | * This file is part of the coreboot project. |
| 3 | * |
| 4 | * Copyright (C) 2012 The Chromium OS Authors. All rights reserved. |
| 5 | * |
| 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. |
| 9 | * |
| 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. |
Stefan Reinauer | d8a5fd2 | 2012-12-11 15:51:47 -0800 | [diff] [blame] | 14 | */ |
| 15 | |
| 16 | /* |
| 17 | * EC communication interface for COMPAL ENE932 Embedded Controller. |
| 18 | */ |
| 19 | |
| 20 | #ifndef _EC_COMPAL_ENE932_EC_H |
| 21 | #define _EC_COMPAL_ENE932_EC_H |
| 22 | |
Alexandru Gagniuc | b1e63e4 | 2014-04-06 23:48:44 -0500 | [diff] [blame] | 23 | #include <stdint.h> |
| 24 | |
Stefan Reinauer | d8a5fd2 | 2012-12-11 15:51:47 -0800 | [diff] [blame] | 25 | #define EC_IO 0xfd60 /* Mainboard specific. Could be Kconfig option */ |
| 26 | #define EC_IO_HIGH EC_IO + 1 |
| 27 | #define EC_IO_LOW EC_IO + 2 |
| 28 | #define EC_IO_DATA EC_IO + 3 |
| 29 | |
| 30 | /* ENE EC internal address space */ |
| 31 | #define REG_SPI_DATA 0xfeab |
| 32 | #define REG_SPI_COMMAND 0xfeac |
| 33 | #define REG_SPI_CONFIG 0xfead |
| 34 | #define CFG_CSn_FORCE_LOW (1 << 4) |
| 35 | #define CFG_COMMAND_WRITE_ENABLE (1 << 3) |
| 36 | #define CFG_STATUS (1 << 1) |
| 37 | |
| 38 | |
| 39 | #define KBD_DATA 0x60 |
| 40 | #define KBD_COMMAND 0x64 |
| 41 | #define KBD_STATUS 0x64 |
| 42 | #define KBD_IBF (1 << 1) // 1: input buffer full (data ready for ec) |
| 43 | #define KBD_OBF (1 << 0) // 1: output buffer full (data ready for host) |
| 44 | |
| 45 | |
| 46 | /* Wait 400ms for keyboard controller answers */ |
| 47 | #define KBC_TIMEOUT_IN_MS 400 |
| 48 | |
| 49 | u8 ec_kbc_read_ob(void); |
| 50 | void ec_kbc_write_cmd(u8 cmd); |
| 51 | void ec_kbc_write_ib(u8 data); |
| 52 | int kbc_cleanup_buffers(void); |
| 53 | |
| 54 | #endif /* _EC_COMPAL_ENE932_EC_H */ |