blob: da237754ded9e53842ec511679a4c1b0ff274bf7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/*
* poweroff.c - ACPI handler for powering off the system.
*
* AKA S5, but it is independent of whether or not the kernel supports
* any other sleep support in the system.
*/
#include <linux/pm.h>
#include <linux/init.h>
#include <acpi/acpi_bus.h>
#include <linux/sched.h>
#include "sleep.h"
static void
acpi_power_off (void)
{
printk("%s called\n",__FUNCTION__);
/* Some SMP machines only can poweroff in boot CPU */
set_cpus_allowed(current, cpumask_of_cpu(0));
acpi_wakeup_gpe_poweroff_prepare();
acpi_enter_sleep_state_prep(ACPI_STATE_S5);
ACPI_DISABLE_IRQS();
acpi_enter_sleep_state(ACPI_STATE_S5);
}
static int acpi_poweroff_init(void)
{
if (!acpi_disabled) {
u8 type_a, type_b;
acpi_status status;
status = acpi_get_sleep_type_data(ACPI_STATE_S5, &type_a, &type_b);
if (ACPI_SUCCESS(status))
pm_power_off = acpi_power_off;
}
return 0;
}
late_initcall(acpi_poweroff_init);
|
