ec.h

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/* SPDX-License-Identifier: GPL-2.0-only */
 
#ifndef _EC_ACPI_H
#define _EC_ACPI_H
 
#include <stdint.h>
 
#define EC_DATA 0x62
#define EC_SC   0x66
 
/* EC_SC input */
#define   EC_SMI_EVT    (1 << 6) // 1: SMI event pending
#define   EC_SCI_EVT    (1 << 5) // 1: SCI event pending
#define   EC_BURST      (1 << 4) // controller is in burst mode
#define   EC_CMD        (1 << 3) // 1: byte in data register is command
                                 // 0: byte in data register is data
#define   EC_IBF        (1 << 1) // 1: input buffer full (data ready for ec)
#define   EC_OBF        (1 << 0) // 1: output buffer full (data ready for host)
/* EC_SC output */
#define   RD_EC         0x80 // Read Embedded Controller
#define   WR_EC         0x81 // Write Embedded Controller
#define   BE_EC         0x82 // Burst Enable Embedded Controller
#define   BD_EC         0x83 // Burst Disable Embedded Controller
#define   QR_EC         0x84 // Query Embedded Controller
 
int send_ec_command(u8 command);
int send_ec_data(u8 data);
int send_ec_data_nowait(u8 data);
u8 recv_ec_data(void);
void ec_clear_out_queue(void);
u8 ec_status(void);
u8 ec_query(void);
u8 ec_read(u8 addr);
int ec_write(u8 addr, u8 data);
void ec_set_bit(u8 addr, u8 bit);
void ec_clr_bit(u8 addr, u8 bit);
void ec_set_ports(u16 cmd_reg, u16 data_reg);
 
#endif /* _EC_ACPI_H */