32 lines
872 B
C
32 lines
872 B
C
|
/*
|
||
|
|
* Copyright (C) 2009 Lemote Inc.
|
||
|
|
* Author: Wu Zhangjin, wuzhangjin@gmail.com
|
||
|
|
*
|
||
|
|
* 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; either version 2 of the License, or (at your
|
||
|
|
* option) any later version.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/err.h>
|
||
|
|
#include <linux/smp.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
|
||
|
|
static struct platform_device loongson2_cpufreq_device = {
|
||
|
|
.name = "loongson2_cpufreq",
|
||
|
|
.id = -1,
|
||
|
|
};
|
||
|
|
|
||
|
|
static int __init loongson2_cpufreq_init(void)
|
||
|
|
{
|
||
|
|
struct cpuinfo_mips *c = ¤t_cpu_data;
|
||
|
|
|
||
|
|
/* Only 2F revision and it's successors support CPUFreq */
|
||
|
|
if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON2F)
|
||
|
|
return platform_device_register(&loongson2_cpufreq_device);
|
||
|
|
|
||
|
|
return -ENODEV;
|
||
|
|
}
|
||
|
|
|
||
|
|
arch_initcall(loongson2_cpufreq_init);
|