/* SPDX-License-Identifier: GPL-2.0 */ struct acpi_smb_hc; enum acpi_smb_protocol { SMBUS_WRITE_QUICK = 2, SMBUS_READ_QUICK = 3, SMBUS_SEND_BYTE = 4, SMBUS_RECEIVE_BYTE = 5, SMBUS_WRITE_BYTE = 6, SMBUS_READ_BYTE = 7, SMBUS_WRITE_WORD = 8, SMBUS_READ_WORD = 9, SMBUS_WRITE_BLOCK = 0xa, SMBUS_READ_BLOCK = 0xb, SMBUS_PROCESS_CALL = 0xc, SMBUS_BLOCK_PROCESS_CALL = 0xd, }; static const u8 SMBUS_PEC = 0x80; enum acpi_sbs_device_addr { ACPI_SBS_CHARGER = 0x9, ACPI_SBS_MANAGER = 0xa, ACPI_SBS_BATTERY = 0xb, }; typedef void (*smbus_alarm_callback)(void *context); extern int acpi_smbus_read(struct acpi_smb_hc *hc, u8 protocol, u8 address, u8 command, u8 * data); extern int acpi_smbus_write(struct acpi_smb_hc *hc, u8 protocol, u8 slave_address, u8 command, u8 * data, u8 length); extern int acpi_smbus_register_callback(struct acpi_smb_hc *hc, smbus_alarm_callback callback, void *context); extern int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc);