acpi: export read_bit_register and write_bit_register

acpi cpuidle needs such acpi functions

Signed-off-by: Fredrik Holmqvist <[email protected]>

headers/os/drivers/ACPI.h

@@ -262,6 +262,10 @@ struct acpi_module_info {
 	/* Table Access */
 	status_t	(*get_table)(const char *signature, uint32 instance,
 					void **tableHeader);
+
+	/* Register Access */
+	status_t	(*read_bit_register)(uint32 regid, uint32 *val);
+	status_t	(*write_bit_register)(uint32 regid, uint32 val);
 };
 
 

src/add-ons/kernel/bus_managers/acpi/BusManager.cpp

@@ -715,6 +715,20 @@ get_table(const char* signature, uint32 instance, void** tableHeader)
 }
 
 
+status_t
+read_bit_register(uint32 regid, uint32 *val)
+{
+	return AcpiReadBitRegister(regid, (UINT32 *)val);
+}
+
+
+status_t
+write_bit_register(uint32 regid, uint32 val)
+{
+	return AcpiWriteBitRegister(regid, val);
+}
+
+
 struct acpi_module_info gACPIModule = {
 	{
 		B_ACPI_MODULE_NAME,
@@ -759,5 +773,7 @@ struct acpi_module_info gACPIModule = {
 	prepare_sleep_state,
 	enter_sleep_state,
 	reboot,
-	get_table
+	get_table,
+	read_bit_register,
+	write_bit_register
 };