drivers/acpi/sbshc.h

   1 struct acpi_smb_hc;
   2 enum acpi_smb_protocol {
   3         SMBUS_WRITE_QUICK = 2,
   4         SMBUS_READ_QUICK = 3,
   5         SMBUS_SEND_BYTE = 4,
   6         SMBUS_RECEIVE_BYTE = 5,
   7         SMBUS_WRITE_BYTE = 6,
   8         SMBUS_READ_BYTE = 7,
   9         SMBUS_WRITE_WORD  = 8,
  10         SMBUS_READ_WORD  = 9,
  11         SMBUS_WRITE_BLOCK = 0xa,
  12         SMBUS_READ_BLOCK = 0xb,
  13         SMBUS_PROCESS_CALL = 0xc,
  14         SMBUS_BLOCK_PROCESS_CALL = 0xd,
  15 };
  16
  17 static const u8 SMBUS_PEC = 0x80;
  18
  19 typedef void (*smbus_alarm_callback)(void *context);
  20
  21 extern int acpi_smbus_read(struct acpi_smb_hc *hc, u8 protocol, u8 address,
  22                u8 command, u8 * data);
  23 extern int acpi_smbus_write(struct acpi_smb_hc *hc, u8 protocol, u8 slave_address,
  24                 u8 command, u8 * data, u8 length);
  25 extern int acpi_smbus_register_callback(struct acpi_smb_hc *hc,
  26                                  smbus_alarm_callback callback, void *context);
  27 extern int acpi_smbus_unregister_callback(struct acpi_smb_hc *hc);