Commit c12f07d1 authored by Rafael J. Wysocki's avatar Rafael J. Wysocki

ACPICA: Add new GPE public interface - acpi_mark_gpe_for_wake.

ACPICA commit c49dbfed2bc069d0038ea7e1294409bfde7c2c8c

Some potential callers of acpi_setup_gpe_for_wake may know in advance that
there won't be any notify handlers installed for device wake notifications
from the given GPE (one example is a button GPE in Linux). For these cases,
acpi_mark_gpe_for_wake should be used instead of acpi_setup_gpe_for_wake.
This will set the ACPI_GPE_CAN_WAKE flag for the GPE without trying to
setup implicit wake notification for it (since there's no handler method).
Rafael Wysocki.
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: default avatarBob Moore <robert.moore@intel.com>
Signed-off-by: default avatarLv Zheng <lv.zheng@intel.com>
parent b9ca3d7b
...@@ -185,6 +185,53 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number) ...@@ -185,6 +185,53 @@ acpi_status acpi_disable_gpe(acpi_handle gpe_device, u32 gpe_number)
ACPI_EXPORT_SYMBOL(acpi_disable_gpe) ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
/*******************************************************************************
*
* FUNCTION: acpi_mark_gpe_for_wake
*
* PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
* gpe_number - GPE level within the GPE block
*
* RETURN: Status
*
* DESCRIPTION: Mark a GPE as having the ability to wake the system. Simply
* sets the ACPI_GPE_CAN_WAKE flag.
*
* Some potential callers of acpi_setup_gpe_for_wake may know in advance that
* there won't be any notify handlers installed for device wake notifications
* from the given GPE (one example is a button GPE in Linux). For these cases,
* acpi_mark_gpe_for_wake should be used instead of acpi_setup_gpe_for_wake.
* This will set the ACPI_GPE_CAN_WAKE flag for the GPE without trying to
* setup implicit wake notification for it (since there's no handler method).
*
******************************************************************************/
acpi_status acpi_mark_gpe_for_wake(acpi_handle gpe_device, u32 gpe_number)
{
struct acpi_gpe_event_info *gpe_event_info;
acpi_status status = AE_BAD_PARAMETER;
acpi_cpu_flags flags;
ACPI_FUNCTION_TRACE(acpi_mark_gpe_for_wake);
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) {
/* Mark the GPE as a possible wake event */
gpe_event_info->flags |= ACPI_GPE_CAN_WAKE;
status = AE_OK;
}
acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
return_ACPI_STATUS(status);
}
ACPI_EXPORT_SYMBOL(acpi_mark_gpe_for_wake)
/******************************************************************************* /*******************************************************************************
* *
* FUNCTION: acpi_setup_gpe_for_wake * FUNCTION: acpi_setup_gpe_for_wake
......
...@@ -674,6 +674,10 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status ...@@ -674,6 +674,10 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_finish_gpe(acpi_handle gpe_device, acpi_finish_gpe(acpi_handle gpe_device,
u32 gpe_number)) u32 gpe_number))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_mark_gpe_for_wake(acpi_handle gpe_device,
u32 gpe_number))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status
acpi_setup_gpe_for_wake(acpi_handle acpi_setup_gpe_for_wake(acpi_handle
parent_device, parent_device,
......
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