33 lines · c
1/* SPDX-License-Identifier: GPL-2.0 */2struct acpi_smb_hc;3enum acpi_smb_protocol {4 SMBUS_WRITE_QUICK = 2,5 SMBUS_READ_QUICK = 3,6 SMBUS_SEND_BYTE = 4,7 SMBUS_RECEIVE_BYTE = 5,8 SMBUS_WRITE_BYTE = 6,9 SMBUS_READ_BYTE = 7,10 SMBUS_WRITE_WORD = 8,11 SMBUS_READ_WORD = 9,12 SMBUS_WRITE_BLOCK = 0xa,13 SMBUS_READ_BLOCK = 0xb,14 SMBUS_PROCESS_CALL = 0xc,15 SMBUS_BLOCK_PROCESS_CALL = 0xd,16};17 18enum acpi_sbs_device_addr {19 ACPI_SBS_CHARGER = 0x9,20 ACPI_SBS_MANAGER = 0xa,21 ACPI_SBS_BATTERY = 0xb,22};23 24typedef void (*smbus_alarm_callback)(void *context);25 26extern int acpi_smbus_read(struct acpi_smb_hc *hc, u8 protocol, u8 address,27 u8 command, u8 *data);28extern int acpi_smbus_write(struct acpi_smb_hc *hc, u8 protocol, u8 slave_address,29 u8 command, u8 *data, u8 length);30extern int acpi_smbus_register_callback(struct acpi_smb_hc *hc,31 smbus_alarm_callback callback, void *context);32extern int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc);33