diff options
Diffstat (limited to 'drivers/acpi/sleep/wakeup.c')
| -rw-r--r-- | drivers/acpi/sleep/wakeup.c | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/drivers/acpi/sleep/wakeup.c b/drivers/acpi/sleep/wakeup.c deleted file mode 100644 index dea4c23df764..000000000000 --- a/drivers/acpi/sleep/wakeup.c +++ /dev/null @@ -1,173 +0,0 @@ -/* - * wakeup.c - support wakeup devices - * Copyright (C) 2004 Li Shaohua <shaohua.li@intel.com> - */ - -#include <linux/init.h> -#include <linux/acpi.h> -#include <acpi/acpi_drivers.h> -#include <linux/kernel.h> -#include <linux/types.h> -#include <acpi/acevents.h> -#include "sleep.h" - -#define _COMPONENT ACPI_SYSTEM_COMPONENT -ACPI_MODULE_NAME("wakeup_devices") - -extern struct list_head acpi_wakeup_device_list; -extern spinlock_t acpi_device_lock; - -/** - * 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 - */ - -void acpi_enable_wakeup_device_prep(u8 sleep_state) -{ - 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)) - continue; - - spin_unlock(&acpi_device_lock); - acpi_enable_wakeup_device_power(dev, sleep_state); - spin_lock(&acpi_device_lock); - } - spin_unlock(&acpi_device_lock); -} - -/** - * acpi_enable_wakeup_device - enable wakeup devices - * @sleep_state: ACPI state - * Enable all wakup devices's GPE - */ -void acpi_enable_wakeup_device(u8 sleep_state) -{ - struct list_head *node, *next; - - /* - * Caution: this routine must be invoked when interrupt is disabled - * Refer ACPI2.0: P212 - */ - 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); - - if (!dev->wakeup.flags.valid) - continue; - - /* If users want to disable run-wake GPE, - * we only disable it for wake and leave it for runtime - */ - if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared) - || sleep_state > (u32) dev->wakeup.sleep_state) { - if (dev->wakeup.flags.run_wake) { - spin_unlock(&acpi_device_lock); - /* set_gpe_type will disable GPE, leave it like that */ - acpi_set_gpe_type(dev->wakeup.gpe_device, - dev->wakeup.gpe_number, - ACPI_GPE_TYPE_RUNTIME); - spin_lock(&acpi_device_lock); - } - continue; - } - spin_unlock(&acpi_device_lock); - if (!dev->wakeup.flags.run_wake) - acpi_enable_gpe(dev->wakeup.gpe_device, - dev->wakeup.gpe_number); - spin_lock(&acpi_device_lock); - } - spin_unlock(&acpi_device_lock); -} - -/** - * acpi_disable_wakeup_device - disable devices' wakeup capability - * @sleep_state: ACPI state - * Disable all wakup devices's GPE and wakeup capability - */ -void acpi_disable_wakeup_device(u8 sleep_state) -{ - 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); - - if (!dev->wakeup.flags.valid) - continue; - - if ((!dev->wakeup.state.enabled && !dev->wakeup.flags.prepared) - || sleep_state > (u32) dev->wakeup.sleep_state) { - if (dev->wakeup.flags.run_wake) { - spin_unlock(&acpi_device_lock); - 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); - spin_lock(&acpi_device_lock); - } - 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_clear_gpe(dev->wakeup.gpe_device, - dev->wakeup.gpe_number, ACPI_NOT_ISR); - } - spin_lock(&acpi_device_lock); - } - spin_unlock(&acpi_device_lock); -} - -static int __init acpi_wakeup_device_init(void) -{ - struct list_head *node, *next; - - if (acpi_disabled) - return 0; - - 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); - /* In case user doesn't load button driver */ - if (!dev->wakeup.flags.run_wake || dev->wakeup.state.enabled) - continue; - 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); - dev->wakeup.state.enabled = 1; - spin_lock(&acpi_device_lock); - } - spin_unlock(&acpi_device_lock); - return 0; -} - -late_initcall(acpi_wakeup_device_init); |