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72 lines
1.6 KiB
72 lines
1.6 KiB
// SPDX-License-Identifier: GPL-2.0-only |
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/* |
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* Interface for power-management for ppc64 compliant platform |
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* |
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* Manish Ahuja <[email protected]> |
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* |
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* Feb 2007 |
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* |
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* Copyright (C) 2007 IBM Corporation. |
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*/ |
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#include <linux/kobject.h> |
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#include <linux/string.h> |
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#include <linux/errno.h> |
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#include <linux/init.h> |
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#include <asm/machdep.h> |
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#include "pseries.h" |
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unsigned long rtas_poweron_auto; /* default and normal state is 0 */ |
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static ssize_t auto_poweron_show(struct kobject *kobj, |
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struct kobj_attribute *attr, char *buf) |
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{ |
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return sprintf(buf, "%lu\n", rtas_poweron_auto); |
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} |
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static ssize_t auto_poweron_store(struct kobject *kobj, |
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struct kobj_attribute *attr, |
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const char *buf, size_t n) |
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{ |
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int ret; |
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unsigned long ups_restart; |
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ret = sscanf(buf, "%lu", &ups_restart); |
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if ((ret == 1) && ((ups_restart == 1) || (ups_restart == 0))){ |
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rtas_poweron_auto = ups_restart; |
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return n; |
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} |
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return -EINVAL; |
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} |
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static struct kobj_attribute auto_poweron_attr = |
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__ATTR(auto_poweron, 0644, auto_poweron_show, auto_poweron_store); |
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#ifndef CONFIG_PM |
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struct kobject *power_kobj; |
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static struct attribute *g[] = { |
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&auto_poweron_attr.attr, |
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NULL, |
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}; |
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static struct attribute_group attr_group = { |
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.attrs = g, |
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}; |
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static int __init pm_init(void) |
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{ |
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power_kobj = kobject_create_and_add("power", NULL); |
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if (!power_kobj) |
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return -ENOMEM; |
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return sysfs_create_group(power_kobj, &attr_group); |
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} |
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machine_core_initcall(pseries, pm_init); |
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#else |
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static int __init apo_pm_init(void) |
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{ |
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return (sysfs_create_file(power_kobj, &auto_poweron_attr.attr)); |
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} |
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machine_device_initcall(pseries, apo_pm_init); |
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#endif
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