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/platform_device.h>
13
14static struct platform_device loongson2_cpufreq_device = {
15	.name = "loongson2_cpufreq",
16	.id = -1,
17};
18
19static int __init loongson2_cpufreq_init(void)
20{
21	struct cpuinfo_mips *c = &current_cpu_data;
22
23	/* Only 2F revision and it's successors support CPUFreq */
24	if ((c->processor_id & PRID_REV_MASK) >= PRID_REV_LOONGSON2F)
25		return platform_device_register(&loongson2_cpufreq_device);
26
27	return -ENODEV;
28}
29
30arch_initcall(loongson2_cpufreq_init);