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Subject[PATCH 1/2] ACPICA: Introduce acpi_dispatch_gpe()
Date
From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>

Introduce acpi_dispatch_gpe() as a wrapper around acpi_ev_detect_gpe()
for checking if the given GPE (as represented by a GPE device handle
and a GPE number) is currently active and dispatching it (if that's
the case) outside of interrupt context.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/acpi/acpica/evgpe.c | 6 ++++++
drivers/acpi/acpica/evxfgpe.c | 22 ++++++++++++++++++++++
include/acpi/acpixf.h | 1 +
3 files changed, 29 insertions(+)

Index: linux-pm/drivers/acpi/acpica/evgpe.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/evgpe.c
+++ linux-pm/drivers/acpi/acpica/evgpe.c
@@ -634,6 +634,12 @@ acpi_ev_detect_gpe(struct acpi_namespace

flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock);

+ if (!gpe_event_info) {
+ gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
+ if (!gpe_event_info)
+ goto error_exit;
+ }
+
/* Get the info block for the entire GPE register */

gpe_register_info = gpe_event_info->register_info;
Index: linux-pm/drivers/acpi/acpica/evxfgpe.c
===================================================================
--- linux-pm.orig/drivers/acpi/acpica/evxfgpe.c
+++ linux-pm/drivers/acpi/acpica/evxfgpe.c
@@ -639,6 +639,28 @@ ACPI_EXPORT_SYMBOL(acpi_get_gpe_status)

/*******************************************************************************
*
+ * FUNCTION: acpi_gispatch_gpe
+ *
+ * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
+ * gpe_number - GPE level within the GPE block
+ *
+ * RETURN: None
+ *
+ * DESCRIPTION: Detect and dispatch a General Purpose Event to either a function
+ * (e.g. EC) or method (e.g. _Lxx/_Exx) handler.
+ *
+ ******************************************************************************/
+void acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number)
+{
+ ACPI_FUNCTION_TRACE(acpi_dispatch_gpe);
+
+ acpi_ev_detect_gpe(gpe_device, NULL, gpe_number);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_dispatch_gpe)
+
+/*******************************************************************************
+ *
* FUNCTION: acpi_finish_gpe
*
* PARAMETERS: gpe_device - Namespace node for the GPE Block
Index: linux-pm/include/acpi/acpixf.h
===================================================================
--- linux-pm.orig/include/acpi/acpixf.h
+++ linux-pm/include/acpi/acpixf.h
@@ -753,6 +753,7 @@ ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_sta
u32 gpe_number,
acpi_event_status
*event_status))
+void acpi_dispatch_gpe(acpi_handle gpe_device, u32 gpe_number);
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_disable_all_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_runtime_gpes(void))
ACPI_HW_DEPENDENT_RETURN_STATUS(acpi_status acpi_enable_all_wakeup_gpes(void))
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