ACPI / sleep: Introduce acpi_os_prepare_extended_sleep() for extended sleep path
Like acpi_os_prepare_sleep(), register a callback for use in systems
like tboot, and xen, which have system specific requirements outside
of ACPICA. This mirrors the functionality in acpi_os_prepare_sleep(),
called from acpi_hw_sleep()
Signed-off-by: Ben Guthro <benjamin.guthro@citrix.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 353ba25..a5db4ae 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -481,6 +481,13 @@
acpi_status acpi_os_prepare_sleep(u8 sleep_state,
u32 pm1a_control, u32 pm1b_control);
+
+void acpi_os_set_prepare_extended_sleep(int (*func)(u8 sleep_state,
+ u32 val_a, u32 val_b));
+
+acpi_status acpi_os_prepare_extended_sleep(u8 sleep_state,
+ u32 val_a, u32 val_b);
+
#ifdef CONFIG_X86
void arch_reserve_mem_area(acpi_physical_address addr, size_t size);
#else