2 /******************************************************************************
4 * Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
7 *****************************************************************************/
9 /******************************************************************************
13 * Some or all of this work - Copyright (c) 1999 - 2006, Intel Corp.
14 * All rights reserved.
18 * 2.1. This is your license from Intel Corp. under its intellectual property
19 * rights. You may have additional license terms from the party that provided
20 * you this software, covering your right to use that party's intellectual
23 * 2.2. Intel grants, free of charge, to any person ("Licensee") obtaining a
24 * copy of the source code appearing in this file ("Covered Code") an
25 * irrevocable, perpetual, worldwide license under Intel's copyrights in the
26 * base code distributed originally by Intel ("Original Intel Code") to copy,
27 * make derivatives, distribute, use and display any portion of the Covered
28 * Code in any form, with the right to sublicense such rights; and
30 * 2.3. Intel grants Licensee a non-exclusive and non-transferable patent
31 * license (with the right to sublicense), under only those claims of Intel
32 * patents that are infringed by the Original Intel Code, to make, use, sell,
33 * offer to sell, and import the Covered Code and derivative works thereof
34 * solely to the minimum extent necessary to exercise the above copyright
35 * license, and in no event shall the patent license extend to any additions
36 * to or modifications of the Original Intel Code. No other license or right
37 * is granted directly or by implication, estoppel or otherwise;
39 * The above copyright and patent license is granted only if the following
44 * 3.1. Redistribution of Source with Rights to Further Distribute Source.
45 * Redistribution of source code of any substantial portion of the Covered
46 * Code or modification with rights to further distribute source must include
47 * the above Copyright Notice, the above License, this list of Conditions,
48 * and the following Disclaimer and Export Compliance provision. In addition,
49 * Licensee must cause all Covered Code to which Licensee contributes to
50 * contain a file documenting the changes Licensee made to create that Covered
51 * Code and the date of any change. Licensee must include in that file the
52 * documentation of any changes made by any predecessor Licensee. Licensee
53 * must include a prominent statement that the modification is derived,
54 * directly or indirectly, from Original Intel Code.
56 * 3.2. Redistribution of Source with no Rights to Further Distribute Source.
57 * Redistribution of source code of any substantial portion of the Covered
58 * Code or modification without rights to further distribute source must
59 * include the following Disclaimer and Export Compliance provision in the
60 * documentation and/or other materials provided with distribution. In
61 * addition, Licensee may not authorize further sublicense of source of any
62 * portion of the Covered Code, and must include terms to the effect that the
63 * license from Licensee to its licensee is limited to the intellectual
64 * property embodied in the software Licensee provides to its licensee, and
65 * not to intellectual property embodied in modifications its licensee may
68 * 3.3. Redistribution of Executable. Redistribution in executable form of any
69 * substantial portion of the Covered Code or modification must reproduce the
70 * above Copyright Notice, and the following Disclaimer and Export Compliance
71 * provision in the documentation and/or other materials provided with the
74 * 3.4. Intel retains all right, title, and interest in and to the Original
77 * 3.5. Neither the name Intel nor any other trademark owned or controlled by
78 * Intel shall be used in advertising or otherwise to promote the sale, use or
79 * other dealings in products derived from or relating to the Covered Code
80 * without prior written authorization from Intel.
82 * 4. Disclaimer and Export Compliance
84 * 4.1. INTEL MAKES NO WARRANTY OF ANY KIND REGARDING ANY SOFTWARE PROVIDED
85 * HERE. ANY SOFTWARE ORIGINATING FROM INTEL OR DERIVED FROM INTEL SOFTWARE
86 * IS PROVIDED "AS IS," AND INTEL WILL NOT PROVIDE ANY SUPPORT, ASSISTANCE,
87 * INSTALLATION, TRAINING OR OTHER SERVICES. INTEL WILL NOT PROVIDE ANY
88 * UPDATES, ENHANCEMENTS OR EXTENSIONS. INTEL SPECIFICALLY DISCLAIMS ANY
89 * IMPLIED WARRANTIES OF MERCHANTABILITY, NONINFRINGEMENT AND FITNESS FOR A
92 * 4.2. IN NO EVENT SHALL INTEL HAVE ANY LIABILITY TO LICENSEE, ITS LICENSEES
93 * OR ANY OTHER THIRD PARTY, FOR ANY LOST PROFITS, LOST DATA, LOSS OF USE OR
94 * COSTS OF PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES, OR FOR ANY INDIRECT,
95 * SPECIAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THIS AGREEMENT, UNDER ANY
96 * CAUSE OF ACTION OR THEORY OF LIABILITY, AND IRRESPECTIVE OF WHETHER INTEL
97 * HAS ADVANCE NOTICE OF THE POSSIBILITY OF SUCH DAMAGES. THESE LIMITATIONS
98 * SHALL APPLY NOTWITHSTANDING THE FAILURE OF THE ESSENTIAL PURPOSE OF ANY
101 * 4.3. Licensee shall not export, either directly or indirectly, any of this
102 * software or system incorporating such software without first obtaining any
103 * required license or other approval from the U. S. Department of Commerce or
104 * any other agency or department of the United States Government. In the
105 * event Licensee exports any such software from the United States or
106 * re-exports any such software from a foreign destination, Licensee shall
107 * ensure that the distribution and export/re-export of the software is in
108 * compliance with all laws, regulations, orders, or other restrictions of the
109 * U.S. Export Administration Regulations. Licensee agrees that neither it nor
110 * any of its subsidiaries will export/re-export any technical data, process,
111 * software, or service, directly or indirectly, to any country for which the
112 * United States government or any agency thereof requires an export license,
113 * other governmental approval, or letter of assurance, without first obtaining
114 * such license, approval or letter.
116 *****************************************************************************/
119 #include "actables.h"
121 #define _COMPONENT ACPI_HARDWARE
122 ACPI_MODULE_NAME ("hwsleep")
125 /*******************************************************************************
127 * FUNCTION: AcpiSetFirmwareWakingVector
129 * PARAMETERS: PhysicalAddress - Physical address of ACPI real mode
134 * DESCRIPTION: Access function for the FirmwareWakingVector field in FACS
136 ******************************************************************************/
139 AcpiSetFirmwareWakingVector (
140 ACPI_PHYSICAL_ADDRESS PhysicalAddress
)
142 ACPI_TABLE_FACS
*Facs
;
146 ACPI_FUNCTION_TRACE (AcpiSetFirmwareWakingVector
);
150 Status
= AcpiGetTableByIndex (ACPI_TABLE_INDEX_FACS
, (ACPI_TABLE_HEADER
**) &Facs
);
151 if (ACPI_FAILURE (Status
))
153 return_ACPI_STATUS (Status
);
158 if ((Facs
->Length
< 32) ||
159 (!(ACPI_GET_ADDRESS (Facs
->XFirmwareWakingVector
))))
162 * ACPI 1.0 FACS or short table or optional X_ field is zero
164 Facs
->FirmwareWakingVector
= (UINT32
) PhysicalAddress
;
169 * ACPI 2.0 FACS with valid X_ field
171 Facs
->XFirmwareWakingVector
= PhysicalAddress
;
174 return_ACPI_STATUS (AE_OK
);
177 ACPI_EXPORT_SYMBOL (AcpiSetFirmwareWakingVector
)
180 /*******************************************************************************
182 * FUNCTION: AcpiGetFirmwareWakingVector
184 * PARAMETERS: *PhysicalAddress - Where the contents of
185 * the FirmwareWakingVector field of
186 * the FACS will be returned.
188 * RETURN: Status, vector
190 * DESCRIPTION: Access function for the FirmwareWakingVector field in FACS
192 ******************************************************************************/
195 AcpiGetFirmwareWakingVector (
196 ACPI_PHYSICAL_ADDRESS
*PhysicalAddress
)
198 ACPI_TABLE_FACS
*Facs
;
202 ACPI_FUNCTION_TRACE (AcpiGetFirmwareWakingVector
);
205 if (!PhysicalAddress
)
207 return_ACPI_STATUS (AE_BAD_PARAMETER
);
212 Status
= AcpiGetTableByIndex (ACPI_TABLE_INDEX_FACS
, (ACPI_TABLE_HEADER
**) &Facs
);
213 if (ACPI_FAILURE (Status
))
215 return_ACPI_STATUS (Status
);
220 if ((Facs
->Length
< 32) ||
221 (!(ACPI_GET_ADDRESS (Facs
->XFirmwareWakingVector
))))
224 * ACPI 1.0 FACS or short table or optional X_ field is zero
227 (ACPI_PHYSICAL_ADDRESS
) Facs
->FirmwareWakingVector
;
232 * ACPI 2.0 FACS with valid X_ field
234 *PhysicalAddress
= (ACPI_PHYSICAL_ADDRESS
) Facs
->XFirmwareWakingVector
;
237 return_ACPI_STATUS (AE_OK
);
240 ACPI_EXPORT_SYMBOL (AcpiGetFirmwareWakingVector
)
243 /*******************************************************************************
245 * FUNCTION: AcpiEnterSleepStatePrep
247 * PARAMETERS: SleepState - Which sleep state to enter
251 * DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
252 * This function must execute with interrupts enabled.
253 * We break sleeping into 2 stages so that OSPM can handle
254 * various OS-specific tasks between the two steps.
256 ******************************************************************************/
259 AcpiEnterSleepStatePrep (
263 ACPI_OBJECT_LIST ArgList
;
267 ACPI_FUNCTION_TRACE (AcpiEnterSleepStatePrep
);
271 * _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
273 Status
= AcpiGetSleepTypeData (SleepState
,
274 &AcpiGbl_SleepTypeA
, &AcpiGbl_SleepTypeB
);
275 if (ACPI_FAILURE (Status
))
277 return_ACPI_STATUS (Status
);
280 /* Setup parameter object */
283 ArgList
.Pointer
= &Arg
;
285 Arg
.Type
= ACPI_TYPE_INTEGER
;
286 Arg
.Integer
.Value
= SleepState
;
288 /* Run the _PTS and _GTS methods */
290 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__PTS
, &ArgList
, NULL
);
291 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
293 return_ACPI_STATUS (Status
);
296 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__GTS
, &ArgList
, NULL
);
297 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
299 return_ACPI_STATUS (Status
);
302 /* Setup the argument to _SST */
307 Arg
.Integer
.Value
= ACPI_SST_WORKING
;
313 Arg
.Integer
.Value
= ACPI_SST_SLEEPING
;
317 Arg
.Integer
.Value
= ACPI_SST_SLEEP_CONTEXT
;
321 Arg
.Integer
.Value
= ACPI_SST_INDICATOR_OFF
; /* Default is off */
325 /* Set the system indicators to show the desired sleep state. */
327 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__SST
, &ArgList
, NULL
);
328 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
330 ACPI_EXCEPTION ((AE_INFO
, Status
, "While executing method _SST"));
333 return_ACPI_STATUS (AE_OK
);
336 ACPI_EXPORT_SYMBOL (AcpiEnterSleepStatePrep
)
339 /*******************************************************************************
341 * FUNCTION: AcpiEnterSleepState
343 * PARAMETERS: SleepState - Which sleep state to enter
347 * DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
348 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
350 ******************************************************************************/
353 AcpiEnterSleepState (
358 ACPI_BIT_REGISTER_INFO
*SleepTypeRegInfo
;
359 ACPI_BIT_REGISTER_INFO
*SleepEnableRegInfo
;
364 ACPI_FUNCTION_TRACE (AcpiEnterSleepState
);
367 if ((AcpiGbl_SleepTypeA
> ACPI_SLEEP_TYPE_MAX
) ||
368 (AcpiGbl_SleepTypeB
> ACPI_SLEEP_TYPE_MAX
))
370 ACPI_ERROR ((AE_INFO
, "Sleep values out of range: A=%X B=%X",
371 AcpiGbl_SleepTypeA
, AcpiGbl_SleepTypeB
));
372 return_ACPI_STATUS (AE_AML_OPERAND_VALUE
);
375 SleepTypeRegInfo
= AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A
);
376 SleepEnableRegInfo
= AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE
);
378 /* Clear wake status */
380 Status
= AcpiSetRegister (ACPI_BITREG_WAKE_STATUS
, 1);
381 if (ACPI_FAILURE (Status
))
383 return_ACPI_STATUS (Status
);
386 /* Clear all fixed and general purpose status bits */
388 Status
= AcpiHwClearAcpiStatus ();
389 if (ACPI_FAILURE (Status
))
391 return_ACPI_STATUS (Status
);
394 if (SleepState
!= ACPI_STATE_S5
)
396 /* Disable BM arbitration */
398 Status
= AcpiSetRegister (ACPI_BITREG_ARB_DISABLE
, 1);
399 if (ACPI_FAILURE (Status
))
401 return_ACPI_STATUS (Status
);
406 * 1) Disable/Clear all GPEs
407 * 2) Enable all wakeup GPEs
409 Status
= AcpiHwDisableAllGpes ();
410 if (ACPI_FAILURE (Status
))
412 return_ACPI_STATUS (Status
);
414 AcpiGbl_SystemAwakeAndRunning
= FALSE
;
416 Status
= AcpiHwEnableAllWakeupGpes ();
417 if (ACPI_FAILURE (Status
))
419 return_ACPI_STATUS (Status
);
422 /* Get current value of PM1A control */
424 Status
= AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK
,
425 ACPI_REGISTER_PM1_CONTROL
, &PM1AControl
);
426 if (ACPI_FAILURE (Status
))
428 return_ACPI_STATUS (Status
);
430 ACPI_DEBUG_PRINT ((ACPI_DB_INIT
,
431 "Entering sleep state [S%d]\n", SleepState
));
433 /* Clear SLP_EN and SLP_TYP fields */
435 PM1AControl
&= ~(SleepTypeRegInfo
->AccessBitMask
|
436 SleepEnableRegInfo
->AccessBitMask
);
437 PM1BControl
= PM1AControl
;
439 /* Insert SLP_TYP bits */
441 PM1AControl
|= (AcpiGbl_SleepTypeA
<< SleepTypeRegInfo
->BitPosition
);
442 PM1BControl
|= (AcpiGbl_SleepTypeB
<< SleepTypeRegInfo
->BitPosition
);
445 * We split the writes of SLP_TYP and SLP_EN to workaround
446 * poorly implemented hardware.
449 /* Write #1: fill in SLP_TYP data */
451 Status
= AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
452 ACPI_REGISTER_PM1A_CONTROL
, PM1AControl
);
453 if (ACPI_FAILURE (Status
))
455 return_ACPI_STATUS (Status
);
458 Status
= AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
459 ACPI_REGISTER_PM1B_CONTROL
, PM1BControl
);
460 if (ACPI_FAILURE (Status
))
462 return_ACPI_STATUS (Status
);
465 /* Insert SLP_ENABLE bit */
467 PM1AControl
|= SleepEnableRegInfo
->AccessBitMask
;
468 PM1BControl
|= SleepEnableRegInfo
->AccessBitMask
;
470 /* Write #2: SLP_TYP + SLP_EN */
472 ACPI_FLUSH_CPU_CACHE ();
474 Status
= AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
475 ACPI_REGISTER_PM1A_CONTROL
, PM1AControl
);
476 if (ACPI_FAILURE (Status
))
478 return_ACPI_STATUS (Status
);
481 Status
= AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
482 ACPI_REGISTER_PM1B_CONTROL
, PM1BControl
);
483 if (ACPI_FAILURE (Status
))
485 return_ACPI_STATUS (Status
);
488 if (SleepState
> ACPI_STATE_S3
)
491 * We wanted to sleep > S3, but it didn't happen (by virtue of the
492 * fact that we are still executing!)
494 * Wait ten seconds, then try again. This is to get S4/S5 to work on
497 * We wait so long to allow chipsets that poll this reg very slowly to
498 * still read the right value. Ideally, this block would go
501 AcpiOsStall (10000000);
503 Status
= AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
504 ACPI_REGISTER_PM1_CONTROL
,
505 SleepEnableRegInfo
->AccessBitMask
);
506 if (ACPI_FAILURE (Status
))
508 return_ACPI_STATUS (Status
);
512 /* Wait until we enter sleep state */
516 Status
= AcpiGetRegister (ACPI_BITREG_WAKE_STATUS
, &InValue
);
517 if (ACPI_FAILURE (Status
))
519 return_ACPI_STATUS (Status
);
522 /* Spin until we wake */
526 return_ACPI_STATUS (AE_OK
);
529 ACPI_EXPORT_SYMBOL (AcpiEnterSleepState
)
532 /*******************************************************************************
534 * FUNCTION: AcpiEnterSleepStateS4bios
540 * DESCRIPTION: Perform a S4 bios request.
541 * THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
543 ******************************************************************************/
546 AcpiEnterSleepStateS4bios (
553 ACPI_FUNCTION_TRACE (AcpiEnterSleepStateS4bios
);
556 Status
= AcpiSetRegister (ACPI_BITREG_WAKE_STATUS
, 1);
557 if (ACPI_FAILURE (Status
))
559 return_ACPI_STATUS (Status
);
562 Status
= AcpiHwClearAcpiStatus ();
563 if (ACPI_FAILURE (Status
))
565 return_ACPI_STATUS (Status
);
569 * 1) Disable/Clear all GPEs
570 * 2) Enable all wakeup GPEs
572 Status
= AcpiHwDisableAllGpes ();
573 if (ACPI_FAILURE (Status
))
575 return_ACPI_STATUS (Status
);
577 AcpiGbl_SystemAwakeAndRunning
= FALSE
;
579 Status
= AcpiHwEnableAllWakeupGpes ();
580 if (ACPI_FAILURE (Status
))
582 return_ACPI_STATUS (Status
);
585 ACPI_FLUSH_CPU_CACHE ();
587 Status
= AcpiOsWritePort (AcpiGbl_FADT
.SmiCommand
,
588 (UINT32
) AcpiGbl_FADT
.S4BiosRequest
, 8);
592 Status
= AcpiGetRegister (ACPI_BITREG_WAKE_STATUS
, &InValue
);
593 if (ACPI_FAILURE (Status
))
595 return_ACPI_STATUS (Status
);
599 return_ACPI_STATUS (AE_OK
);
602 ACPI_EXPORT_SYMBOL (AcpiEnterSleepStateS4bios
)
605 /*******************************************************************************
607 * FUNCTION: AcpiLeaveSleepState
609 * PARAMETERS: SleepState - Which sleep state we just exited
613 * DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
614 * Called with interrupts ENABLED.
616 ******************************************************************************/
619 AcpiLeaveSleepState (
622 ACPI_OBJECT_LIST ArgList
;
625 ACPI_BIT_REGISTER_INFO
*SleepTypeRegInfo
;
626 ACPI_BIT_REGISTER_INFO
*SleepEnableRegInfo
;
631 ACPI_FUNCTION_TRACE (AcpiLeaveSleepState
);
635 * Set SLP_TYPE and SLP_EN to state S0.
636 * This is unclear from the ACPI Spec, but it is required
639 Status
= AcpiGetSleepTypeData (ACPI_STATE_S0
,
640 &AcpiGbl_SleepTypeA
, &AcpiGbl_SleepTypeB
);
641 if (ACPI_SUCCESS (Status
))
643 SleepTypeRegInfo
= AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_TYPE_A
);
644 SleepEnableRegInfo
= AcpiHwGetBitRegisterInfo (ACPI_BITREG_SLEEP_ENABLE
);
646 /* Get current value of PM1A control */
648 Status
= AcpiHwRegisterRead (ACPI_MTX_DO_NOT_LOCK
,
649 ACPI_REGISTER_PM1_CONTROL
, &PM1AControl
);
650 if (ACPI_SUCCESS (Status
))
652 /* Clear SLP_EN and SLP_TYP fields */
654 PM1AControl
&= ~(SleepTypeRegInfo
->AccessBitMask
|
655 SleepEnableRegInfo
->AccessBitMask
);
656 PM1BControl
= PM1AControl
;
658 /* Insert SLP_TYP bits */
660 PM1AControl
|= (AcpiGbl_SleepTypeA
<< SleepTypeRegInfo
->BitPosition
);
661 PM1BControl
|= (AcpiGbl_SleepTypeB
<< SleepTypeRegInfo
->BitPosition
);
663 /* Just ignore any errors */
665 (void) AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
666 ACPI_REGISTER_PM1A_CONTROL
, PM1AControl
);
667 (void) AcpiHwRegisterWrite (ACPI_MTX_DO_NOT_LOCK
,
668 ACPI_REGISTER_PM1B_CONTROL
, PM1BControl
);
672 /* Ensure EnterSleepStatePrep -> EnterSleepState ordering */
674 AcpiGbl_SleepTypeA
= ACPI_SLEEP_TYPE_INVALID
;
676 /* Setup parameter object */
679 ArgList
.Pointer
= &Arg
;
680 Arg
.Type
= ACPI_TYPE_INTEGER
;
682 /* Ignore any errors from these methods */
684 Arg
.Integer
.Value
= ACPI_SST_WAKING
;
685 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__SST
, &ArgList
, NULL
);
686 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
688 ACPI_EXCEPTION ((AE_INFO
, Status
, "During Method _SST"));
691 Arg
.Integer
.Value
= SleepState
;
692 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__BFS
, &ArgList
, NULL
);
693 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
695 ACPI_EXCEPTION ((AE_INFO
, Status
, "During Method _BFS"));
698 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__WAK
, &ArgList
, NULL
);
699 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
701 ACPI_EXCEPTION ((AE_INFO
, Status
, "During Method _WAK"));
703 /* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
707 * 1) Disable/Clear all GPEs
708 * 2) Enable all runtime GPEs
710 Status
= AcpiHwDisableAllGpes ();
711 if (ACPI_FAILURE (Status
))
713 return_ACPI_STATUS (Status
);
715 AcpiGbl_SystemAwakeAndRunning
= TRUE
;
717 Status
= AcpiHwEnableAllRuntimeGpes ();
718 if (ACPI_FAILURE (Status
))
720 return_ACPI_STATUS (Status
);
723 /* Enable power button */
725 (void) AcpiSetRegister(
726 AcpiGbl_FixedEventInfo
[ACPI_EVENT_POWER_BUTTON
].EnableRegisterId
, 1);
728 (void) AcpiSetRegister(
729 AcpiGbl_FixedEventInfo
[ACPI_EVENT_POWER_BUTTON
].StatusRegisterId
, 1);
731 /* Enable BM arbitration */
733 Status
= AcpiSetRegister (ACPI_BITREG_ARB_DISABLE
, 0);
734 if (ACPI_FAILURE (Status
))
736 return_ACPI_STATUS (Status
);
739 Arg
.Integer
.Value
= ACPI_SST_WORKING
;
740 Status
= AcpiEvaluateObject (NULL
, METHOD_NAME__SST
, &ArgList
, NULL
);
741 if (ACPI_FAILURE (Status
) && Status
!= AE_NOT_FOUND
)
743 ACPI_EXCEPTION ((AE_INFO
, Status
, "During Method _SST"));
746 return_ACPI_STATUS (Status
);
749 ACPI_EXPORT_SYMBOL (AcpiLeaveSleepState
)