| /* SPDX-License-Identifier: GPL-2.0-only */ |
| |
| /* |
| * 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 */ |
