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
18static const u8 SMBUS_PEC = 0x80;
19
20enum acpi_sbs_device_addr {
21 ACPI_SBS_CHARGER = 0x9,
22 ACPI_SBS_MANAGER = 0xa,
23 ACPI_SBS_BATTERY = 0xb,
24};
25
26typedef void (*smbus_alarm_callback)(void *context);
27
28extern int acpi_smbus_read(struct acpi_smb_hc *hc, u8 protocol, u8 address,
29 u8 command, u8 * data);
30extern int acpi_smbus_write(struct acpi_smb_hc *hc, u8 protocol, u8 slave_address,
31 u8 command, u8 * data, u8 length);
32extern int acpi_smbus_register_callback(struct acpi_smb_hc *hc,
33 smbus_alarm_callback callback, void *context);
34extern int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc);
35