drivers/cpufreq/hisi-acpu-cpufreq.c

   1 /*
   2  * Hisilicon Platforms Using ACPU CPUFreq Support
   3  *
   4  * Copyright (c) 2015 Hisilicon Limited.
   5  * Copyright (c) 2015 Linaro Limited.
   6  *
   7  * Leo Yan <leo.yan@linaro.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  *
  13  * This program is distributed "as is" WITHOUT ANY WARRANTY of any
  14  * kind, whether express or implied; without even the implied warranty
  15  * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
  20
  21 #include <linux/err.h>
  22 #include <linux/init.h>
  23 #include <linux/kernel.h>
  24 #include <linux/module.h>
  25 #include <linux/of.h>
  26 #include <linux/platform_device.h>
  27
  28 static int __init hisi_acpu_cpufreq_driver_init(void)
  29 {
  30         struct platform_device *pdev;
  31
  32         if (!of_machine_is_compatible("hisilicon,hi6220"))
  33                 return -ENODEV;
  34
  35         pdev = platform_device_register_simple("cpufreq-dt", -1, NULL, 0);
  36         return PTR_ERR_OR_ZERO(pdev);
  37 }
  38 module_init(hisi_acpu_cpufreq_driver_init);
  39
  40 MODULE_AUTHOR("Leo Yan <leo.yan@linaro.org>");
  41 MODULE_DESCRIPTION("Hisilicon acpu cpufreq driver");
  42 MODULE_LICENSE("GPL v2");