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
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
|
// SPDX-License-Identifier: GPL-2.0-only
/*
* Interface for power-management for ppc64 compliant platform
*
* Manish Ahuja <mahuja@us.ibm.com>
*
* Feb 2007
*
* Copyright (C) 2007 IBM Corporation.
*/
#include <linux/kobject.h>
#include <linux/string.h>
#include <linux/errno.h>
#include <linux/init.h>
#include <asm/machdep.h>
#include "pseries.h"
unsigned long rtas_poweron_auto; /* default and normal state is 0 */
static ssize_t auto_poweron_show(struct kobject *kobj,
struct kobj_attribute *attr, char *buf)
{
return sprintf(buf, "%lu\n", rtas_poweron_auto);
}
static ssize_t auto_poweron_store(struct kobject *kobj,
struct kobj_attribute *attr,
const char *buf, size_t n)
{
int ret;
unsigned long ups_restart;
ret = sscanf(buf, "%lu", &ups_restart);
if ((ret == 1) && ((ups_restart == 1) || (ups_restart == 0))){
rtas_poweron_auto = ups_restart;
return n;
}
return -EINVAL;
}
static struct kobj_attribute auto_poweron_attr =
__ATTR(auto_poweron, 0644, auto_poweron_show, auto_poweron_store);
#ifndef CONFIG_PM
struct kobject *power_kobj;
static struct attribute *g[] = {
&auto_poweron_attr.attr,
NULL,
};
static struct attribute_group attr_group = {
.attrs = g,
};
static int __init pm_init(void)
{
power_kobj = kobject_create_and_add("power", NULL);
if (!power_kobj)
return -ENOMEM;
return sysfs_create_group(power_kobj, &attr_group);
}
machine_core_initcall(pseries, pm_init);
#else
static int __init apo_pm_init(void)
{
return (sysfs_create_file(power_kobj, &auto_poweron_attr.attr));
}
machine_device_initcall(pseries, apo_pm_init);
#endif
|
