From 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 Mon Sep 17 00:00:00 2001 From: Yunhong Jiang Date: Tue, 4 Aug 2015 12:17:53 -0700 Subject: Add the rt linux 4.1.3-rt3 as base Import the rt linux 4.1.3-rt3 as OPNFV kvm base. It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and the base is: commit 0917f823c59692d751951bf5ea699a2d1e2f26a2 Author: Sebastian Andrzej Siewior Date: Sat Jul 25 12:13:34 2015 +0200 Prepare v4.1.3-rt3 Signed-off-by: Sebastian Andrzej Siewior We lose all the git history this way and it's not good. We should apply another opnfv project repo in future. Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423 Signed-off-by: Yunhong Jiang --- kernel/drivers/acpi/wakeup.c | 97 ++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 97 insertions(+) create mode 100644 kernel/drivers/acpi/wakeup.c (limited to 'kernel/drivers/acpi/wakeup.c') diff --git a/kernel/drivers/acpi/wakeup.c b/kernel/drivers/acpi/wakeup.c new file mode 100644 index 000000000..1638401ab --- /dev/null +++ b/kernel/drivers/acpi/wakeup.c @@ -0,0 +1,97 @@ +/* + * wakeup.c - support wakeup devices + * Copyright (C) 2004 Li Shaohua + */ + +#include +#include +#include +#include + +#include "internal.h" +#include "sleep.h" + +/* + * We didn't lock acpi_device_lock in the file, because it invokes oops in + * suspend/resume and isn't really required as this is called in S-state. At + * that time, there is no device hotplug + **/ +#define _COMPONENT ACPI_SYSTEM_COMPONENT +ACPI_MODULE_NAME("wakeup_devices") + +/** + * acpi_enable_wakeup_devices - Enable wake-up device GPEs. + * @sleep_state: ACPI system sleep state. + * + * Enable wakeup device power of devices with the state.enable flag set and set + * the wakeup enable mask bits in the GPE registers that correspond to wakeup + * devices. + */ +void acpi_enable_wakeup_devices(u8 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); + + if (!dev->wakeup.flags.valid + || sleep_state > (u32) dev->wakeup.sleep_state + || !(device_may_wakeup(&dev->dev) + || dev->wakeup.prepare_count)) + continue; + + if (device_may_wakeup(&dev->dev)) + acpi_enable_wakeup_device_power(dev, sleep_state); + + /* The wake-up power should have been enabled already. */ + acpi_set_gpe_wake_mask(dev->wakeup.gpe_device, dev->wakeup.gpe_number, + ACPI_GPE_ENABLE); + } +} + +/** + * acpi_disable_wakeup_devices - Disable devices' wakeup capability. + * @sleep_state: ACPI system sleep state. + */ +void acpi_disable_wakeup_devices(u8 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); + + if (!dev->wakeup.flags.valid + || sleep_state > (u32) dev->wakeup.sleep_state + || !(device_may_wakeup(&dev->dev) + || dev->wakeup.prepare_count)) + continue; + + acpi_set_gpe_wake_mask(dev->wakeup.gpe_device, dev->wakeup.gpe_number, + ACPI_GPE_DISABLE); + + if (device_may_wakeup(&dev->dev)) + acpi_disable_wakeup_device_power(dev); + } +} + +int __init acpi_wakeup_device_init(void) +{ + struct list_head *node, *next; + + mutex_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 (device_can_wakeup(&dev->dev)) { + /* Button GPEs are supposed to be always enabled. */ + acpi_enable_gpe(dev->wakeup.gpe_device, + dev->wakeup.gpe_number); + device_set_wakeup_enable(&dev->dev, true); + } + } + mutex_unlock(&acpi_device_lock); + return 0; +} -- cgit 1.2.3-korg