85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
|
/*
|
||
|
|
* Interface for power-management for ppc64 compliant platform
|
||
|
|
*
|
||
|
|
* Manish Ahuja <mahuja@us.ibm.com>
|
||
|
|
*
|
||
|
|
* Feb 2007
|
||
|
|
*
|
||
|
|
* Copyright (C) 2007 IBM Corporation.
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License as published by
|
||
|
|
* the Free Software Foundation; version 2 of the License.
|
||
|
|
*
|
||
|
|
* This program is distributed in the hope that it will be useful,
|
||
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||
|
|
* GNU General Public License for more details.
|
||
|
|
*
|
||
|
|
* You should have received a copy of the GNU General Public License
|
||
|
|
* along with this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#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
|