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Diffstat (limited to 'src/ec/quanta/it8518/ec.h')
| -rw-r--r-- | src/ec/quanta/it8518/ec.h | 97 |
1 files changed, 97 insertions, 0 deletions
diff --git a/src/ec/quanta/it8518/ec.h b/src/ec/quanta/it8518/ec.h new file mode 100644 index 0000000000..f3a2d382cc --- /dev/null +++ b/src/ec/quanta/it8518/ec.h @@ -0,0 +1,97 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2013 Google Inc. + * + * 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/* + * EC communication interface for QUANTA IT8518 Embedded Controller. + */ + +#ifndef _EC_QUANTA_IT8518_EC_H +#define _EC_QUANTA_IT8518_EC_H + +#define EC_IO 0x100 /* 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 + +/* Wait 400ms for keyboard controller answers */ +#define KBC_TIMEOUT_IN_MS 400 + +// 60h/64h Command Interface +#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) + +#define EC_KBD_SMI_EVENT 0xCD +#define EC_KBD_CMD_UNMUTE 0xE8 +#define EC_KBD_CMD_MUTE 0xE9 + +u8 ec_kbc_read_ob(void); +void ec_kbc_write_cmd(u8 cmd); +void ec_kbc_write_ib(u8 data); + +// 62h/66h Command Interface +#define EC_DATA 0x62 +#define EC_SC 0x66 // Status & Control Register +#define SMI_EVT (1 << 6) // 1: SMI event was triggered +#define SCI_EVT (1 << 5) // 1: SCI event was triggered + +// EC Commands (defined in ec_function_spec v3.12) +#define RD_EC 0x80 +#define WR_EC 0x81 +#define QR_EC 0x84 + +#define EC_CMD_EXIT_BOOT_BLOCK 0x85 +#define EC_CMD_NOTIFY_ACPI_ENTER 0x86 +#define EC_CMD_NOTIFY_ACPI_EXIT 0x87 +#define EC_CMD_WARM_RESET 0x8C + +// ECRAM Offsets +#define EC_PERIPH_CNTL_3 0x0D +#define EC_USB_S3_EN 0x26 +#define EC_PERIPH_STAT_3 0x35 +#define EC_THERM_0 0x78 +#define EC_WAKE_SRC_ENABLE 0xBF +#define EC_FW_VER 0xE8 // 2 Bytes +#define EC_IF_MIN_VER 0xEB +#define EC_STATUS_REG 0xEC +#define EC_IF_MAJ_VER 0xEF +#define EC_MBAT_STATUS 0x0138 + + +// EC 0.83b added status bits: +// BIT0=EC in RO mode +// BIT1=Recovery Key Sequence Detected +#define EC_IN_RO_MODE 0x1 +#define EC_IN_RECOVERY_MODE 0x3 + +// EC 0.86a added enable bit: +#define EC_LID_WAKE_ENABLE 0x4 + +u8 ec_read_ob(void); +void ec_write_cmd(u8 cmd); +void ec_write_ib(u8 data); + +u8 ec_read(u16 addr); +void ec_write(u16 addr, u8 data); +u8 ec_it8518_get_event(void); +void ec_it8518_enable_wake_events(void); + +#endif /* _EC_QUANTA_IT8518_EC_H */ |