*****************************************************************************/
/*
- * Copyright (C) 2000 - 2014, Intel Corp.
+ * Copyright (C) 2000 - 2015, Intel Corp.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
*/
gpe_event_info = acpi_ev_get_gpe_event_info(gpe_device, gpe_number);
if (gpe_event_info) {
- if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) !=
+ if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) !=
ACPI_GPE_DISPATCH_NONE) {
status = acpi_ev_add_gpe_reference(gpe_event_info);
} else {
ACPI_EXPORT_SYMBOL(acpi_disable_gpe)
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_set_gpe
+ *
+ * PARAMETERS: gpe_device - Parent GPE Device. NULL for GPE0/GPE1
+ * gpe_number - GPE level within the GPE block
+ * action - ACPI_GPE_ENABLE or ACPI_GPE_DISABLE
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Enable or disable an individual GPE. This function bypasses
+ * the reference count mechanism used in the acpi_enable_gpe(),
+ * acpi_disable_gpe() interfaces.
+ * This API is typically used by the GPE raw handler mode driver
+ * to switch between the polling mode and the interrupt mode after
+ * the driver has enabled the GPE.
+ * The APIs should be invoked in this order:
+ * acpi_enable_gpe() <- Ensure the reference count > 0
+ * acpi_set_gpe(ACPI_GPE_DISABLE) <- Enter polling mode
+ * acpi_set_gpe(ACPI_GPE_ENABLE) <- Leave polling mode
+ * acpi_disable_gpe() <- Decrease the reference count
+ *
+ * Note: If a GPE is shared by 2 silicon components, then both the drivers
+ * should support GPE polling mode or disabling the GPE for long period
+ * for one driver may break the other. So use it with care since all
+ * firmware _Lxx/_Exx handlers currently rely on the GPE interrupt mode.
+ *
+ ******************************************************************************/
+acpi_status acpi_set_gpe(acpi_handle gpe_device, u32 gpe_number, u8 action)
+{
+ struct acpi_gpe_event_info *gpe_event_info;
+ acpi_status status;
+ acpi_cpu_flags flags;
+
+ ACPI_FUNCTION_TRACE(acpi_set_gpe);
+
+ 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) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
+ /* Perform the action */
+
+ switch (action) {
+ case ACPI_GPE_ENABLE:
+
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_ENABLE);
+ break;
+
+ case ACPI_GPE_DISABLE:
+
+ status = acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE);
+ break;
+
+ default:
+
+ status = AE_BAD_PARAMETER;
+ break;
+ }
+
+unlock_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_set_gpe)
/*******************************************************************************
*
* known as an "implicit notify". Note: The GPE is assumed to be
* level-triggered (for windows compatibility).
*/
- if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+ if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_NONE) {
/*
* This is the first device for implicit notify on this GPE.
* If we already have an implicit notify on this GPE, add
* this device to the notify list.
*/
- if ((gpe_event_info->flags & ACPI_GPE_DISPATCH_MASK) ==
+ if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) ==
ACPI_GPE_DISPATCH_NOTIFY) {
/* Ensure that the device is not already in the list */
ACPI_EXPORT_SYMBOL(acpi_get_gpe_status)
+/*******************************************************************************
+ *
+ * FUNCTION: acpi_finish_gpe
+ *
+ * PARAMETERS: gpe_device - Namespace node for the GPE Block
+ * (NULL for FADT defined GPEs)
+ * gpe_number - GPE level within the GPE block
+ *
+ * RETURN: Status
+ *
+ * DESCRIPTION: Clear and conditionally reenable a GPE. This completes the GPE
+ * processing. Intended for use by asynchronous host-installed
+ * GPE handlers. The GPE is only reenabled if the enable_for_run bit
+ * is set in the GPE info.
+ *
+ ******************************************************************************/
+acpi_status acpi_finish_gpe(acpi_handle gpe_device, u32 gpe_number)
+{
+ struct acpi_gpe_event_info *gpe_event_info;
+ acpi_status status;
+ acpi_cpu_flags flags;
+
+ ACPI_FUNCTION_TRACE(acpi_finish_gpe);
+
+ 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) {
+ status = AE_BAD_PARAMETER;
+ goto unlock_and_exit;
+ }
+
+ status = acpi_ev_finish_gpe(gpe_event_info);
+
+unlock_and_exit:
+ acpi_os_release_lock(acpi_gbl_gpe_lock, flags);
+ return_ACPI_STATUS(status);
+}
+
+ACPI_EXPORT_SYMBOL(acpi_finish_gpe)
+
/******************************************************************************
*
* FUNCTION: acpi_disable_all_gpes
* all GPE blocks.
*
******************************************************************************/
-
acpi_status acpi_enable_all_wakeup_gpes(void)
{
acpi_status status;
projects / linux-drm-fsl-dcu.git / blobdiff