summaryrefslogtreecommitdiffstats
path: root/drivers/acpi/sbshc.h
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/acpi/sbshc.h')
-rw-r--r--drivers/acpi/sbshc.h27
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);