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- /* 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);
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