1 files changed, 67 insertions, 0 deletions

diff --git a/drivers/acpi/acpica/evxfevnt.c b/drivers/acpi/acpica/evxfevnt.c
index d97b8dce1668..d6a6d4a76592 100644
--- a/drivers/acpi/acpica/evxfevnt.c
+++ b/drivers/acpi/acpica/evxfevnt.c
@@ -308,6 +308,73 @@ ACPI_EXPORT_SYMBOL(acpi_set_gpe)
 
 /*******************************************************************************
  *
+ * FUNCTION:    acpi_gpe_wakeup
+ *
+ * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1
+ *              gpe_number      - GPE level within the GPE block
+ *              Action          - Enable or Disable
+ *
+ * RETURN:      Status
+ *
+ * DESCRIPTION: Set or clear the GPE's wakeup enable mask bit.
+ *
+ ******************************************************************************/
+acpi_status acpi_gpe_wakeup(acpi_handle gpe_device, u32 gpe_number, u8 action)
+{
+        acpi_status status = AE_OK;
+        struct acpi_gpe_event_info *gpe_event_info;
+        struct acpi_gpe_register_info *gpe_register_info;
+        acpi_cpu_flags flags;
+        u32 register_bit;
+
+        ACPI_FUNCTION_TRACE(acpi_gpe_wakeup);
+
+        flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);
+
+        /* Ensure that we have a valid GPE number */
+
+        gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
+        if (!gpe_event_info) {
+                status = AE_BAD_PARAMETER;
+                goto unlock_and_exit;
+        }
+
+        gpe_register_info = gpe_event_info->register_info;
+        if (!gpe_register_info) {
+                status = AE_NOT_EXIST;
+                goto unlock_and_exit;
+        }
+
+        register_bit =
+            acpi_hw_get_gpe_register_bit(gpe_event_info, gpe_register_info);
+
+        /* Perform the action */
+
+        switch (action) {
+        case ACPI_GPE_ENABLE:
+                ACPI_SET_BIT(gpe_register_info->enable_for_wake, register_bit);
+                break;
+
+        case ACPI_GPE_DISABLE:
+                ACPI_CLEAR_BIT(gpe_register_info->enable_for_wake,
+                               register_bit);
+                break;
+
+        default:
+                ACPI_ERROR((AE_INFO, "%u, Invalid action", action));
+                status = AE_BAD_PARAMETER;
+                break;
+        }
+
+unlock_and_exit:
+        acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+        return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_gpe_wakeup)
+
+/*******************************************************************************
+ *
  * FUNCTION:    acpi_enable_gpe
  *
  * PARAMETERS:  gpe_device      - Parent GPE Device. NULL for GPE0/GPE1