/*
* wakeup.c - support wakeup devices
+ * Copyright (C) 2004 Li Shaohua <shaohua.li@intel.com>
*/
#include <linux/init.h>
#include "sleep.h"
#define _COMPONENT ACPI_SYSTEM_COMPONENT
-ACPI_MODULE_NAME ("wakeup_devices")
+ACPI_MODULE_NAME("wakeup_devices")
+extern struct list_head acpi_wakeup_device_list;
+extern spinlock_t acpi_device_lock;
+
+#ifdef CONFIG_ACPI_SLEEP
/**
* acpi_enable_wakeup_device_prep - prepare wakeup devices
* @sleep_state: ACPI state
* Enable all wakup devices power if the devices' wakeup level
* is higher than requested sleep level
*/
-extern struct list_head acpi_wakeup_device_list;
-extern spinlock_t acpi_device_lock;
-void
-acpi_enable_wakeup_device_prep(
- u8 sleep_state)
+void acpi_enable_wakeup_device_prep(u8 sleep_state)
{
- struct list_head * node, * next;
+ struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device_prep");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device * dev = container_of(node,
- struct acpi_device, wakeup_list);
-
- if (!dev->wakeup.flags.valid ||
- !dev->wakeup.state.enabled ||
- (sleep_state > (u32) dev->wakeup.sleep_state))
+ struct acpi_device *dev = container_of(node,
+ struct acpi_device,
+ wakeup_list);
+
+ if (!dev->wakeup.flags.valid ||
+ !dev->wakeup.state.enabled ||
+ (sleep_state > (u32) dev->wakeup.sleep_state))
continue;
spin_unlock(&acpi_device_lock);
* @sleep_state: ACPI state
* Enable all wakup devices's GPE
*/
-void
-acpi_enable_wakeup_device(
- u8 sleep_state)
+void acpi_enable_wakeup_device(u8 sleep_state)
{
- struct list_head * node, * next;
+ struct list_head *node, *next;
/*
* Caution: this routine must be invoked when interrupt is disabled
ACPI_FUNCTION_TRACE("acpi_enable_wakeup_device");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device * dev = container_of(node,
- struct acpi_device, wakeup_list);
+ struct acpi_device *dev = container_of(node,
+ struct acpi_device,
+ wakeup_list);
/* If users want to disable run-wake GPE,
* we only disable it for wake and leave it for runtime
*/
if (dev->wakeup.flags.run_wake && !dev->wakeup.state.enabled) {
spin_unlock(&acpi_device_lock);
- acpi_set_gpe_type(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_GPE_TYPE_RUNTIME);
+ acpi_set_gpe_type(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number,
+ ACPI_GPE_TYPE_RUNTIME);
/* Re-enable it, since set_gpe_type will disable it */
- acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_ISR);
+ acpi_enable_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number, ACPI_ISR);
spin_lock(&acpi_device_lock);
continue;
}
if (!dev->wakeup.flags.valid ||
- !dev->wakeup.state.enabled ||
- (sleep_state > (u32) dev->wakeup.sleep_state))
+ !dev->wakeup.state.enabled ||
+ (sleep_state > (u32) dev->wakeup.sleep_state))
continue;
spin_unlock(&acpi_device_lock);
/* run-wake GPE has been enabled */
if (!dev->wakeup.flags.run_wake)
- acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_ISR);
+ acpi_enable_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number, ACPI_ISR);
dev->wakeup.state.active = 1;
spin_lock(&acpi_device_lock);
}
* @sleep_state: ACPI state
* Disable all wakup devices's GPE and wakeup capability
*/
-void
-acpi_disable_wakeup_device (
- u8 sleep_state)
+void acpi_disable_wakeup_device(u8 sleep_state)
{
- struct list_head * node, * next;
+ struct list_head *node, *next;
ACPI_FUNCTION_TRACE("acpi_disable_wakeup_device");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device * dev = container_of(node,
- struct acpi_device, wakeup_list);
+ struct acpi_device *dev = container_of(node,
+ struct acpi_device,
+ wakeup_list);
if (dev->wakeup.flags.run_wake && !dev->wakeup.state.enabled) {
spin_unlock(&acpi_device_lock);
- acpi_set_gpe_type(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN);
+ acpi_set_gpe_type(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number,
+ ACPI_GPE_TYPE_WAKE_RUN);
/* Re-enable it, since set_gpe_type will disable it */
- acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ acpi_enable_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number, ACPI_NOT_ISR);
spin_lock(&acpi_device_lock);
continue;
}
- if (!dev->wakeup.flags.valid ||
- !dev->wakeup.state.active ||
- (sleep_state > (u32) dev->wakeup.sleep_state))
+ if (!dev->wakeup.flags.valid ||
+ !dev->wakeup.state.active ||
+ (sleep_state > (u32) dev->wakeup.sleep_state))
continue;
spin_unlock(&acpi_device_lock);
acpi_disable_wakeup_device_power(dev);
/* Never disable run-wake GPE */
if (!dev->wakeup.flags.run_wake) {
- acpi_disable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
- acpi_clear_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ acpi_disable_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ acpi_clear_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number, ACPI_NOT_ISR);
}
dev->wakeup.state.active = 0;
spin_lock(&acpi_device_lock);
static int __init acpi_wakeup_device_init(void)
{
- struct list_head * node, * next;
+ struct list_head *node, *next;
if (acpi_disabled)
return 0;
- printk("ACPI wakeup devices: \n");
spin_lock(&acpi_device_lock);
list_for_each_safe(node, next, &acpi_wakeup_device_list) {
- struct acpi_device * dev = container_of(node,
- struct acpi_device, wakeup_list);
-
+ struct acpi_device *dev = container_of(node,
+ struct acpi_device,
+ wakeup_list);
+
/* In case user doesn't load button driver */
if (dev->wakeup.flags.run_wake && !dev->wakeup.state.enabled) {
spin_unlock(&acpi_device_lock);
- acpi_set_gpe_type(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_GPE_TYPE_WAKE_RUN);
- acpi_enable_gpe(dev->wakeup.gpe_device,
- dev->wakeup.gpe_number, ACPI_NOT_ISR);
+ acpi_set_gpe_type(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number,
+ ACPI_GPE_TYPE_WAKE_RUN);
+ acpi_enable_gpe(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number, ACPI_NOT_ISR);
dev->wakeup.state.enabled = 1;
spin_lock(&acpi_device_lock);
}
- printk("%4s ", dev->pnp.bus_id);
}
spin_unlock(&acpi_device_lock);
- printk("\n");
return 0;
}
late_initcall(acpi_wakeup_device_init);
+#endif
+
+/*
+ * Disable all wakeup GPEs before entering requested sleep state.
+ * @sleep_state: ACPI state
+ * Since acpi_enter_sleep_state() will disable all
+ * RUNTIME GPEs, we simply mark all GPES that
+ * are not enabled for wakeup from requested state as RUNTIME.
+ */
+void acpi_gpe_sleep_prepare(u32 sleep_state)
+{
+ struct list_head *node, *next;
+
+ list_for_each_safe(node, next, &acpi_wakeup_device_list) {
+ struct acpi_device *dev = container_of(node,
+ struct acpi_device,
+ wakeup_list);
+
+ /* The GPE can wakeup system from this state, don't touch it */
+ if ((u32) dev->wakeup.sleep_state >= sleep_state)
+ continue;
+ /* acpi_set_gpe_type will automatically disable GPE */
+ acpi_set_gpe_type(dev->wakeup.gpe_device,
+ dev->wakeup.gpe_number,
+ ACPI_GPE_TYPE_RUNTIME);
+ }
+}
git://git.onelab.eu / linux-2.6.git / blobdiff