1 /* SPDX-License-Identifier: GPL-2.0-only */ 2 3 /* 4 * EC communication interface for COMPAL ENE932 Embedded Controller. 5 */ 6 7 #ifndef _EC_COMPAL_ENE932_EC_H 8 #define _EC_COMPAL_ENE932_EC_H 9 10 #include <stdint.h> 11 12 #define EC_IO 0xfd60 /* Mainboard specific. Could be Kconfig option */ 13 #define EC_IO_HIGH EC_IO + 1 14 #define EC_IO_LOW EC_IO + 2 15 #define EC_IO_DATA EC_IO + 3 16 17 /* ENE EC internal address space */ 18 #define REG_SPI_DATA 0xfeab 19 #define REG_SPI_COMMAND 0xfeac 20 #define REG_SPI_CONFIG 0xfead 21 #define CFG_CSn_FORCE_LOW (1 << 4) 22 #define CFG_COMMAND_WRITE_ENABLE (1 << 3) 23 #define CFG_STATUS (1 << 1) 24 25 #define KBD_DATA 0x60 26 #define KBD_COMMAND 0x64 27 #define KBD_STATUS 0x64 28 #define KBD_IBF (1 << 1) // 1: input buffer full (data ready for ec) 29 #define KBD_OBF (1 << 0) // 1: output buffer full (data ready for host) 30 31 /* Wait 400ms for keyboard controller answers */ 32 #define KBC_TIMEOUT_IN_MS 400 33 34 u8 ec_kbc_read_ob(void); 35 void ec_kbc_write_cmd(u8 cmd); 36 void ec_kbc_write_ib(u8 data); 37 int kbc_cleanup_buffers(void); 38 39 #endif /* _EC_COMPAL_ENE932_EC_H */ 40