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/*
* 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>
unsigned long rtas_poweron_auto; /* default and normal state is 0 */
static ssize_t auto_poweron_show(struct kset *kset, char *buf)
{
return sprintf(buf, "%lu\n", rtas_poweron_auto);
}
static ssize_t
auto_poweron_store(struct kset *kset, 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 subsys_attribute auto_poweron_attr = {
.attr = {
.name = __stringify(auto_poweron),
.mode = 0644,
},
.show = auto_poweron_show,
.store = auto_poweron_store,
};
#ifndef CONFIG_PM
decl_subsys(power, NULL);
static struct attribute *g[] = {
&auto_poweron_attr.attr,
NULL,
};
static struct attribute_group attr_group = {
.attrs = g,
};
static int __init pm_init(void)
{
int error = subsystem_register(&power_subsys);
if (!error)
error = sysfs_create_group(&power_subsys.kobj, &attr_group);
return error;
}
core_initcall(pm_init);
#else
extern struct kset power_subsys;
static int __init apo_pm_init(void)
{
return (subsys_create_file(&power_subsys, &auto_poweron_attr));
}
__initcall(apo_pm_init);
#endif
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