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Linux/arch/mips/loongson/common/platform.c

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  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 
 15 static struct platform_device loongson2_cpufreq_device = {
 16         .name = "loongson2_cpufreq",
 17         .id = -1,
 18 };
 19 
 20 static 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 
 31 arch_initcall(loongson2_cpufreq_init);
 32 

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