/* * 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 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); } core_initcall(pm_init); #else static int __init apo_pm_init(void) { return (sysfs_create_file(power_kobj, &auto_poweron_attr)); } __initcall(apo_pm_init); #endif