Quelle  platform.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-or-later
/*
 * Copyright (C) 2009 Lemote Inc.
 * Author: Wu Zhangjin, wuzhangjin@gmail.com
 */

#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 its 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);