314ccd644c
The _WAK global ACPI control method has to be called with the argument representing the sleep state being exited. Make it happen. Special thanks to Mirco Tischler <mt-ml@gmx.de> for reporting the problem and debugging. Reported-by: Mirco Tischler <mt-ml@gmx.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Len Brown <len.brown@intel.com>
648 lines
18 KiB
C
648 lines
18 KiB
C
|
|
/******************************************************************************
|
|
*
|
|
* Name: hwsleep.c - ACPI Hardware Sleep/Wake Interface
|
|
*
|
|
*****************************************************************************/
|
|
|
|
/*
|
|
* Copyright (C) 2000 - 2007, R. Byron Moore
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions, and the following disclaimer,
|
|
* without modification.
|
|
* 2. Redistributions in binary form must reproduce at minimum a disclaimer
|
|
* substantially similar to the "NO WARRANTY" disclaimer below
|
|
* ("Disclaimer") and any redistribution must be conditioned upon
|
|
* including a substantially similar Disclaimer requirement for further
|
|
* binary redistribution.
|
|
* 3. Neither the names of the above-listed copyright holders nor the names
|
|
* of any contributors may be used to endorse or promote products derived
|
|
* from this software without specific prior written permission.
|
|
*
|
|
* Alternatively, this software may be distributed under the terms of the
|
|
* GNU General Public License ("GPL") version 2 as published by the Free
|
|
* Software Foundation.
|
|
*
|
|
* NO WARRANTY
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
|
|
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGES.
|
|
*/
|
|
|
|
#include <acpi/acpi.h>
|
|
#include <acpi/actables.h>
|
|
|
|
#define _COMPONENT ACPI_HARDWARE
|
|
ACPI_MODULE_NAME("hwsleep")
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_set_firmware_waking_vector
|
|
*
|
|
* PARAMETERS: physical_address - Physical address of ACPI real mode
|
|
* entry point.
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Access function for the firmware_waking_vector field in FACS
|
|
*
|
|
******************************************************************************/
|
|
acpi_status
|
|
acpi_set_firmware_waking_vector(acpi_physical_address physical_address)
|
|
{
|
|
struct acpi_table_facs *facs;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_set_firmware_waking_vector);
|
|
|
|
/* Get the FACS */
|
|
|
|
status =
|
|
acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
|
|
(struct acpi_table_header **)&facs);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Set the vector */
|
|
|
|
if ((facs->length < 32) || (!(facs->xfirmware_waking_vector))) {
|
|
/*
|
|
* ACPI 1.0 FACS or short table or optional X_ field is zero
|
|
*/
|
|
facs->firmware_waking_vector = (u32) physical_address;
|
|
} else {
|
|
/*
|
|
* ACPI 2.0 FACS with valid X_ field
|
|
*/
|
|
facs->xfirmware_waking_vector = physical_address;
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_set_firmware_waking_vector)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_get_firmware_waking_vector
|
|
*
|
|
* PARAMETERS: *physical_address - Where the contents of
|
|
* the firmware_waking_vector field of
|
|
* the FACS will be returned.
|
|
*
|
|
* RETURN: Status, vector
|
|
*
|
|
* DESCRIPTION: Access function for the firmware_waking_vector field in FACS
|
|
*
|
|
******************************************************************************/
|
|
#ifdef ACPI_FUTURE_USAGE
|
|
acpi_status
|
|
acpi_get_firmware_waking_vector(acpi_physical_address * physical_address)
|
|
{
|
|
struct acpi_table_facs *facs;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_get_firmware_waking_vector);
|
|
|
|
if (!physical_address) {
|
|
return_ACPI_STATUS(AE_BAD_PARAMETER);
|
|
}
|
|
|
|
/* Get the FACS */
|
|
|
|
status =
|
|
acpi_get_table_by_index(ACPI_TABLE_INDEX_FACS,
|
|
(struct acpi_table_header **)&facs);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Get the vector */
|
|
|
|
if ((facs->length < 32) || (!(facs->xfirmware_waking_vector))) {
|
|
/*
|
|
* ACPI 1.0 FACS or short table or optional X_ field is zero
|
|
*/
|
|
*physical_address =
|
|
(acpi_physical_address) facs->firmware_waking_vector;
|
|
} else {
|
|
/*
|
|
* ACPI 2.0 FACS with valid X_ field
|
|
*/
|
|
*physical_address =
|
|
(acpi_physical_address) facs->xfirmware_waking_vector;
|
|
}
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_get_firmware_waking_vector)
|
|
#endif
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_enter_sleep_state_prep
|
|
*
|
|
* PARAMETERS: sleep_state - Which sleep state to enter
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Prepare to enter a system sleep state (see ACPI 2.0 spec p 231)
|
|
* This function must execute with interrupts enabled.
|
|
* We break sleeping into 2 stages so that OSPM can handle
|
|
* various OS-specific tasks between the two steps.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_enter_sleep_state_prep(u8 sleep_state)
|
|
{
|
|
acpi_status status;
|
|
struct acpi_object_list arg_list;
|
|
union acpi_object arg;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_prep);
|
|
|
|
/*
|
|
* _PSW methods could be run here to enable wake-on keyboard, LAN, etc.
|
|
*/
|
|
status = acpi_get_sleep_type_data(sleep_state,
|
|
&acpi_gbl_sleep_type_a,
|
|
&acpi_gbl_sleep_type_b);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Setup parameter object */
|
|
|
|
arg_list.count = 1;
|
|
arg_list.pointer = &arg;
|
|
|
|
arg.type = ACPI_TYPE_INTEGER;
|
|
arg.integer.value = sleep_state;
|
|
|
|
/* Run the _PTS method */
|
|
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__PTS, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Setup the argument to _SST */
|
|
|
|
switch (sleep_state) {
|
|
case ACPI_STATE_S0:
|
|
arg.integer.value = ACPI_SST_WORKING;
|
|
break;
|
|
|
|
case ACPI_STATE_S1:
|
|
case ACPI_STATE_S2:
|
|
case ACPI_STATE_S3:
|
|
arg.integer.value = ACPI_SST_SLEEPING;
|
|
break;
|
|
|
|
case ACPI_STATE_S4:
|
|
arg.integer.value = ACPI_SST_SLEEP_CONTEXT;
|
|
break;
|
|
|
|
default:
|
|
arg.integer.value = ACPI_SST_INDICATOR_OFF; /* Default is off */
|
|
break;
|
|
}
|
|
|
|
/* Set the system indicators to show the desired sleep state. */
|
|
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
ACPI_EXCEPTION((AE_INFO, status,
|
|
"While executing method _SST"));
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_prep)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_enter_sleep_state
|
|
*
|
|
* PARAMETERS: sleep_state - Which sleep state to enter
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Enter a system sleep state (see ACPI 2.0 spec p 231)
|
|
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
|
*
|
|
******************************************************************************/
|
|
acpi_status asmlinkage acpi_enter_sleep_state(u8 sleep_state)
|
|
{
|
|
u32 PM1Acontrol;
|
|
u32 PM1Bcontrol;
|
|
struct acpi_bit_register_info *sleep_type_reg_info;
|
|
struct acpi_bit_register_info *sleep_enable_reg_info;
|
|
u32 in_value;
|
|
struct acpi_object_list arg_list;
|
|
union acpi_object arg;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state);
|
|
|
|
if ((acpi_gbl_sleep_type_a > ACPI_SLEEP_TYPE_MAX) ||
|
|
(acpi_gbl_sleep_type_b > ACPI_SLEEP_TYPE_MAX)) {
|
|
ACPI_ERROR((AE_INFO, "Sleep values out of range: A=%X B=%X",
|
|
acpi_gbl_sleep_type_a, acpi_gbl_sleep_type_b));
|
|
return_ACPI_STATUS(AE_AML_OPERAND_VALUE);
|
|
}
|
|
|
|
sleep_type_reg_info =
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE_A);
|
|
sleep_enable_reg_info =
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
|
|
|
|
/* Clear wake status */
|
|
|
|
status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Clear all fixed and general purpose status bits */
|
|
|
|
status = acpi_hw_clear_acpi_status();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*
|
|
* 1) Disable/Clear all GPEs
|
|
* 2) Enable all wakeup GPEs
|
|
*/
|
|
status = acpi_hw_disable_all_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
acpi_gbl_system_awake_and_running = FALSE;
|
|
|
|
status = acpi_hw_enable_all_wakeup_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Execute the _GTS method */
|
|
|
|
arg_list.count = 1;
|
|
arg_list.pointer = &arg;
|
|
arg.type = ACPI_TYPE_INTEGER;
|
|
arg.integer.value = sleep_state;
|
|
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__GTS, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Get current value of PM1A control */
|
|
|
|
status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL, &PM1Acontrol);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
ACPI_DEBUG_PRINT((ACPI_DB_INIT,
|
|
"Entering sleep state [S%d]\n", sleep_state));
|
|
|
|
/* Clear SLP_EN and SLP_TYP fields */
|
|
|
|
PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask |
|
|
sleep_enable_reg_info->access_bit_mask);
|
|
PM1Bcontrol = PM1Acontrol;
|
|
|
|
/* Insert SLP_TYP bits */
|
|
|
|
PM1Acontrol |=
|
|
(acpi_gbl_sleep_type_a << sleep_type_reg_info->bit_position);
|
|
PM1Bcontrol |=
|
|
(acpi_gbl_sleep_type_b << sleep_type_reg_info->bit_position);
|
|
|
|
/*
|
|
* We split the writes of SLP_TYP and SLP_EN to workaround
|
|
* poorly implemented hardware.
|
|
*/
|
|
|
|
/* Write #1: fill in SLP_TYP data */
|
|
|
|
status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL,
|
|
PM1Acontrol);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL,
|
|
PM1Bcontrol);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Insert SLP_ENABLE bit */
|
|
|
|
PM1Acontrol |= sleep_enable_reg_info->access_bit_mask;
|
|
PM1Bcontrol |= sleep_enable_reg_info->access_bit_mask;
|
|
|
|
/* Write #2: SLP_TYP + SLP_EN */
|
|
|
|
ACPI_FLUSH_CPU_CACHE();
|
|
|
|
status = acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL,
|
|
PM1Acontrol);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL,
|
|
PM1Bcontrol);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
if (sleep_state > ACPI_STATE_S3) {
|
|
/*
|
|
* We wanted to sleep > S3, but it didn't happen (by virtue of the
|
|
* fact that we are still executing!)
|
|
*
|
|
* Wait ten seconds, then try again. This is to get S4/S5 to work on
|
|
* all machines.
|
|
*
|
|
* We wait so long to allow chipsets that poll this reg very slowly to
|
|
* still read the right value. Ideally, this block would go
|
|
* away entirely.
|
|
*/
|
|
acpi_os_stall(10000000);
|
|
|
|
status = acpi_hw_register_write(ACPI_REGISTER_PM1_CONTROL,
|
|
sleep_enable_reg_info->
|
|
access_bit_mask);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
}
|
|
|
|
/* Wait until we enter sleep state */
|
|
|
|
do {
|
|
status = acpi_get_register_unlocked(ACPI_BITREG_WAKE_STATUS,
|
|
&in_value);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/* Spin until we wake */
|
|
|
|
} while (!in_value);
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_enter_sleep_state_s4bios
|
|
*
|
|
* PARAMETERS: None
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Perform a S4 bios request.
|
|
* THIS FUNCTION MUST BE CALLED WITH INTERRUPTS DISABLED
|
|
*
|
|
******************************************************************************/
|
|
acpi_status asmlinkage acpi_enter_sleep_state_s4bios(void)
|
|
{
|
|
u32 in_value;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_enter_sleep_state_s4bios);
|
|
|
|
status = acpi_set_register(ACPI_BITREG_WAKE_STATUS, 1);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
status = acpi_hw_clear_acpi_status();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*
|
|
* 1) Disable/Clear all GPEs
|
|
* 2) Enable all wakeup GPEs
|
|
*/
|
|
status = acpi_hw_disable_all_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
acpi_gbl_system_awake_and_running = FALSE;
|
|
|
|
status = acpi_hw_enable_all_wakeup_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_FLUSH_CPU_CACHE();
|
|
|
|
status = acpi_os_write_port(acpi_gbl_FADT.smi_command,
|
|
(u32) acpi_gbl_FADT.S4bios_request, 8);
|
|
|
|
do {
|
|
acpi_os_stall(1000);
|
|
status = acpi_get_register(ACPI_BITREG_WAKE_STATUS, &in_value);
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
} while (!in_value);
|
|
|
|
return_ACPI_STATUS(AE_OK);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_enter_sleep_state_s4bios)
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_leave_sleep_state_prep
|
|
*
|
|
* PARAMETERS: sleep_state - Which sleep state we are exiting
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Perform the first state of OS-independent ACPI cleanup after a
|
|
* sleep.
|
|
* Called with interrupts DISABLED.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_leave_sleep_state_prep(u8 sleep_state)
|
|
{
|
|
struct acpi_object_list arg_list;
|
|
union acpi_object arg;
|
|
acpi_status status;
|
|
struct acpi_bit_register_info *sleep_type_reg_info;
|
|
struct acpi_bit_register_info *sleep_enable_reg_info;
|
|
u32 PM1Acontrol;
|
|
u32 PM1Bcontrol;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state_prep);
|
|
|
|
/*
|
|
* Set SLP_TYPE and SLP_EN to state S0.
|
|
* This is unclear from the ACPI Spec, but it is required
|
|
* by some machines.
|
|
*/
|
|
status = acpi_get_sleep_type_data(ACPI_STATE_S0,
|
|
&acpi_gbl_sleep_type_a,
|
|
&acpi_gbl_sleep_type_b);
|
|
if (ACPI_SUCCESS(status)) {
|
|
sleep_type_reg_info =
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_TYPE_A);
|
|
sleep_enable_reg_info =
|
|
acpi_hw_get_bit_register_info(ACPI_BITREG_SLEEP_ENABLE);
|
|
|
|
/* Get current value of PM1A control */
|
|
|
|
status = acpi_hw_register_read(ACPI_REGISTER_PM1_CONTROL,
|
|
&PM1Acontrol);
|
|
if (ACPI_SUCCESS(status)) {
|
|
|
|
/* Clear SLP_EN and SLP_TYP fields */
|
|
|
|
PM1Acontrol &= ~(sleep_type_reg_info->access_bit_mask |
|
|
sleep_enable_reg_info->
|
|
access_bit_mask);
|
|
PM1Bcontrol = PM1Acontrol;
|
|
|
|
/* Insert SLP_TYP bits */
|
|
|
|
PM1Acontrol |=
|
|
(acpi_gbl_sleep_type_a << sleep_type_reg_info->
|
|
bit_position);
|
|
PM1Bcontrol |=
|
|
(acpi_gbl_sleep_type_b << sleep_type_reg_info->
|
|
bit_position);
|
|
|
|
/* Just ignore any errors */
|
|
|
|
(void)acpi_hw_register_write(ACPI_REGISTER_PM1A_CONTROL,
|
|
PM1Acontrol);
|
|
(void)acpi_hw_register_write(ACPI_REGISTER_PM1B_CONTROL,
|
|
PM1Bcontrol);
|
|
}
|
|
}
|
|
|
|
/* Execute the _BFS method */
|
|
|
|
arg_list.count = 1;
|
|
arg_list.pointer = &arg;
|
|
arg.type = ACPI_TYPE_INTEGER;
|
|
arg.integer.value = sleep_state;
|
|
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__BFS, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During Method _BFS"));
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
/*******************************************************************************
|
|
*
|
|
* FUNCTION: acpi_leave_sleep_state
|
|
*
|
|
* PARAMETERS: sleep_state - Which sleep state we just exited
|
|
*
|
|
* RETURN: Status
|
|
*
|
|
* DESCRIPTION: Perform OS-independent ACPI cleanup after a sleep
|
|
* Called with interrupts ENABLED.
|
|
*
|
|
******************************************************************************/
|
|
acpi_status acpi_leave_sleep_state(u8 sleep_state)
|
|
{
|
|
struct acpi_object_list arg_list;
|
|
union acpi_object arg;
|
|
acpi_status status;
|
|
|
|
ACPI_FUNCTION_TRACE(acpi_leave_sleep_state);
|
|
|
|
/* Ensure enter_sleep_state_prep -> enter_sleep_state ordering */
|
|
|
|
acpi_gbl_sleep_type_a = ACPI_SLEEP_TYPE_INVALID;
|
|
|
|
/* Setup parameter object */
|
|
|
|
arg_list.count = 1;
|
|
arg_list.pointer = &arg;
|
|
arg.type = ACPI_TYPE_INTEGER;
|
|
|
|
/* Ignore any errors from these methods */
|
|
|
|
arg.integer.value = ACPI_SST_WAKING;
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During Method _SST"));
|
|
}
|
|
|
|
/*
|
|
* GPEs must be enabled before _WAK is called as GPEs
|
|
* might get fired there
|
|
*
|
|
* Restore the GPEs:
|
|
* 1) Disable/Clear all GPEs
|
|
* 2) Enable all runtime GPEs
|
|
*/
|
|
status = acpi_hw_disable_all_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
status = acpi_hw_enable_all_runtime_gpes();
|
|
if (ACPI_FAILURE(status)) {
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
arg.integer.value = sleep_state;
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__WAK, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During Method _WAK"));
|
|
}
|
|
/* TBD: _WAK "sometimes" returns stuff - do we want to look at it? */
|
|
|
|
acpi_gbl_system_awake_and_running = TRUE;
|
|
|
|
/* Enable power button */
|
|
|
|
(void)
|
|
acpi_set_register(acpi_gbl_fixed_event_info
|
|
[ACPI_EVENT_POWER_BUTTON].enable_register_id, 1);
|
|
|
|
(void)
|
|
acpi_set_register(acpi_gbl_fixed_event_info
|
|
[ACPI_EVENT_POWER_BUTTON].status_register_id, 1);
|
|
|
|
arg.integer.value = ACPI_SST_WORKING;
|
|
status = acpi_evaluate_object(NULL, METHOD_NAME__SST, &arg_list, NULL);
|
|
if (ACPI_FAILURE(status) && status != AE_NOT_FOUND) {
|
|
ACPI_EXCEPTION((AE_INFO, status, "During Method _SST"));
|
|
}
|
|
|
|
return_ACPI_STATUS(status);
|
|
}
|
|
|
|
ACPI_EXPORT_SYMBOL(acpi_leave_sleep_state)
|