Merge branch 'acpica'

[linux-block.git] / drivers / acpi / acpica / evevent.c

diff --git a/drivers/acpi/acpica/evevent.c b/drivers/acpi/acpica/evevent.c
index 89391938193d959f29d364aa802e39ae90b279a6..9efca54c51ac50c6638f0f19c41a8f3efb8ef696 100644 (file)
--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -265,4 +265,49 @@ static u32 acpi_ev_fixed_event_dispatch(u32 event)
                 handler) (acpi_gbl_fixed_event_handlers[event].context));
 }
 
+/*******************************************************************************
+ *
+ * FUNCTION:    acpi_any_fixed_event_status_set
+ *
+ * PARAMETERS:  None
+ *
+ * RETURN:      TRUE or FALSE
+ *
+ * DESCRIPTION: Checks the PM status register for active fixed events
+ *
+ ******************************************************************************/
+
+u32 acpi_any_fixed_event_status_set(void)
+{
+       acpi_status status;
+       u32 in_status;
+       u32 in_enable;
+       u32 i;
+
+       status = acpi_hw_register_read(ACPI_REGISTER_PM1_ENABLE, &in_enable);
+       if (ACPI_FAILURE(status)) {
+               return (FALSE);
+       }
+
+       status = acpi_hw_register_read(ACPI_REGISTER_PM1_STATUS, &in_status);
+       if (ACPI_FAILURE(status)) {
+               return (FALSE);
+       }
+
+       /*
+        * Check for all possible Fixed Events and dispatch those that are active
+        */
+       for (i = 0; i < ACPI_NUM_FIXED_EVENTS; i++) {
+
+               /* Both the status and enable bits must be on for this event */
+
+               if ((in_status & acpi_gbl_fixed_event_info[i].status_bit_mask) &&
+                   (in_enable & acpi_gbl_fixed_event_info[i].enable_bit_mask)) {
+                       return (TRUE);
+               }
+       }
+
+       return (FALSE);
+}
+
 #endif                         /* !ACPI_REDUCED_HARDWARE */