1/*
 2 * Copyright (C) 2009 Lemote Inc.
 3 * Author: Wu Zhangjin, wuzhangjin@gmail.com
 4 *
 5 * This program is free software; you can redistribute  it and/or modify it
 6 * under  the terms of  the GNU General  Public License as published by the
 7 * Free Software Foundation;  either version 2 of the  License, or (at your
 8 * option) any later version.
 9 */
10
11#include <linux/err.h>
12#include <linux/smp.h>
13#include <linux/platform_device.h>
14
15static struct platform_device loongson2_cpufreq_device = {
16	.name = "loongson2_cpufreq",
17	.id = -1,
18};
19
20static int __init loongson2_cpufreq_init(void)
21{
22	struct cpuinfo_mips *c = &current_cpu_data;
23
24	/* Only 2F revision and it's successors support CPUFreq */
25	if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON2F)
26		return platform_device_register(&loongson2_cpufreq_device);
27
28	return -ENODEV;
29}
30
31arch_initcall(loongson2_cpufreq_init);