ACPI: Battery: add sysfs alarm

[safe/jmp/linux-2.6] / drivers / acpi / events / evgpe.c

diff --git a/drivers/acpi/events/evgpe.c b/drivers/acpi/events/evgpe.c
index c76c058..e22f4a9 100644 (file)
--- a/drivers/acpi/events/evgpe.c
+++ b/drivers/acpi/events/evgpe.c
@@ -5,7 +5,7 @@
  *****************************************************************************/
 
 /*
- * Copyright (C) 2000 - 2006, R. Byron Moore
+ * Copyright (C) 2000 - 2007, R. Byron Moore
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -121,7 +121,9 @@ acpi_ev_update_gpe_enable_masks(struct acpi_gpe_event_info *gpe_event_info,
        if (!gpe_register_info) {
                return_ACPI_STATUS(AE_NOT_EXIST);
        }
-       register_bit = gpe_event_info->register_bit;
+       register_bit = (u8)
+           (1 <<
+            (gpe_event_info->gpe_number - gpe_register_info->base_gpe_number));
 
        /* 1) Disable case.  Simply clear all enable bits */
 
@@ -339,9 +341,8 @@ struct acpi_gpe_event_info *acpi_ev_get_gpe_event_info(acpi_handle gpe_device,
 
        /* A Non-NULL gpe_device means this is a GPE Block Device */
 
-       obj_desc =
-           acpi_ns_get_attached_object((struct acpi_namespace_node *)
-                                       gpe_device);
+       obj_desc = acpi_ns_get_attached_object((struct acpi_namespace_node *)
+                                              gpe_device);
        if (!obj_desc || !obj_desc->device.gpe_block) {
                return (NULL);
        }
@@ -458,8 +459,7 @@ u32 acpi_ev_gpe_detect(struct acpi_gpe_xrupt_info * gpe_xrupt_list)
 
                                /* Examine one GPE bit */
 
-                               if (enabled_status_byte &
-                                   acpi_gbl_decode_to8bit[j]) {
+                               if (enabled_status_byte & (1 << j)) {
                                        /*
                                         * Found an active GPE. Dispatch the event to a handler
                                         * or method.
@@ -570,7 +570,7 @@ static void ACPI_SYSTEM_XFACE acpi_ev_asynch_execute_gpe_method(void *context)
 
                if (ACPI_FAILURE(status)) {
                        ACPI_EXCEPTION((AE_INFO, status,
-                                       "While evaluating GPE method [%4.4s]",
+                                       "while evaluating GPE method [%4.4s]",
                                        acpi_ut_get_node_name
                                        (local_gpe_event_info.dispatch.
                                         method_node)));
@@ -618,6 +618,8 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
 
        ACPI_FUNCTION_TRACE(ev_gpe_dispatch);
 
+       acpi_gpe_count++;
+
        /*
         * If edge-triggered, clear the GPE status bit now.  Note that
         * level-triggered events are cleared after the GPE is serviced.
@@ -633,20 +635,12 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
                }
        }
 
-       /* Save current system state */
-
-       if (acpi_gbl_system_awake_and_running) {
-               ACPI_SET_BIT(gpe_event_info->flags, ACPI_GPE_SYSTEM_RUNNING);
-       } else {
-               ACPI_CLEAR_BIT(gpe_event_info->flags, ACPI_GPE_SYSTEM_RUNNING);
-       }
-
        /*
-        * Dispatch the GPE to either an installed handler, or the control
-        * method associated with this GPE (_Lxx or _Exx).
-        * If a handler exists, we invoke it and do not attempt to run the method.
-        * If there is neither a handler nor a method, we disable the level to
-        * prevent further events from coming in here.
+        * Dispatch the GPE to either an installed handler, or the control method
+        * associated with this GPE (_Lxx or _Exx). If a handler exists, we invoke
+        * it and do not attempt to run the method. If there is neither a handler
+        * nor a method, we disable this GPE to prevent further such pointless
+        * events from firing.
         */
        switch (gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) {
        case ACPI_GPE_DISPATCH_HANDLER:
@@ -677,8 +671,8 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
        case ACPI_GPE_DISPATCH_METHOD:
 
                /*
-                * Disable GPE, so it doesn't keep firing before the method has a
-                * chance to run.
+                * Disable the GPE, so it doesn't keep firing before the method has a
+                * chance to run (it runs asynchronously with interrupts enabled).
                 */
                status = acpi_ev_disable_gpe(gpe_event_info);
                if (ACPI_FAILURE(status)) {
@@ -711,7 +705,7 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
                            gpe_number));
 
                /*
-                * Disable the GPE.  The GPE will remain disabled until the ACPI
+                * Disable the GPE. The GPE will remain disabled until the ACPI
                 * Core Subsystem is restarted, or a handler is installed.
                 */
                status = acpi_ev_disable_gpe(gpe_event_info);
@@ -726,50 +720,3 @@ acpi_ev_gpe_dispatch(struct acpi_gpe_event_info *gpe_event_info, u32 gpe_number)
 
        return_UINT32(ACPI_INTERRUPT_HANDLED);
 }
-
-#ifdef ACPI_GPE_NOTIFY_CHECK
-/*******************************************************************************
- * TBD: NOT USED, PROTOTYPE ONLY AND WILL PROBABLY BE REMOVED
- *
- * FUNCTION:    acpi_ev_check_for_wake_only_gpe
- *
- * PARAMETERS:  gpe_event_info  - info for this GPE
- *
- * RETURN:      Status
- *
- * DESCRIPTION: Determine if a a GPE is "wake-only".
- *
- *              Called from Notify() code in interpreter when a "DeviceWake"
- *              Notify comes in.
- *
- ******************************************************************************/
-
-acpi_status
-acpi_ev_check_for_wake_only_gpe(struct acpi_gpe_event_info *gpe_event_info)
-{
-       acpi_status status;
-
-       ACPI_FUNCTION_TRACE(ev_check_for_wake_only_gpe);
-
-       if ((gpe_event_info) && /* Only >0 for _Lxx/_Exx */
-           ((gpe_event_info->flags & ACPI_GPE_SYSTEM_MASK) == ACPI_GPE_SYSTEM_RUNNING)) {      /* System state at GPE time */
-               /* This must be a wake-only GPE, disable it */
-
-               status = acpi_ev_disable_gpe(gpe_event_info);
-
-               /* Set GPE to wake-only.  Do not change wake disabled/enabled status */
-
-               acpi_ev_set_gpe_type(gpe_event_info, ACPI_GPE_TYPE_WAKE);
-
-               ACPI_INFO((AE_INFO,
-                          "GPE %p was updated from wake/run to wake-only",
-                          gpe_event_info));
-
-               /* This was a wake-only GPE */
-
-               return_ACPI_STATUS(AE_WAKE_ONLY_GPE);
-       }
-
-       return_ACPI_STATUS(AE_OK);
-}
-#endif