1 files changed, 27 insertions, 0 deletions

diff --git a/drivers/acpi/sbshc.h b/drivers/acpi/sbshc.h
new file mode 100644
index 000000000000..3bda3491a97b
--- /dev/null
+++ b/drivers/acpi/sbshc.h
@@ -0,0 +1,27 @@
+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;
+
+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);