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kernel/linux-rt-4.4.41/drivers/cpufreq/arm_big_little.h 1.28 KB
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  /*
   * ARM big.LITTLE platform's CPUFreq header file
   *
   * Copyright (C) 2013 ARM Ltd.
   * Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
   *
   * Copyright (C) 2013 Linaro.
   * Viresh Kumar <viresh.kumar@linaro.org>
   *
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License version 2 as
   * published by the Free Software Foundation.
   *
   * This program is distributed "as is" WITHOUT ANY WARRANTY of any
   * kind, whether express or implied; without even the implied warranty
   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
   * GNU General Public License for more details.
   */
  #ifndef CPUFREQ_ARM_BIG_LITTLE_H
  #define CPUFREQ_ARM_BIG_LITTLE_H
  
  #include <linux/cpufreq.h>
  #include <linux/device.h>
  #include <linux/types.h>
  
  struct cpufreq_arm_bL_ops {
  	char name[CPUFREQ_NAME_LEN];
  
  	/*
  	 * This must set opp table for cpu_dev in a similar way as done by
  	 * dev_pm_opp_of_add_table().
  	 */
  	int (*init_opp_table)(struct device *cpu_dev);
  
  	/* Optional */
  	int (*get_transition_latency)(struct device *cpu_dev);
  	void (*free_opp_table)(struct device *cpu_dev);
  };
  
  int bL_cpufreq_register(struct cpufreq_arm_bL_ops *ops);
  void bL_cpufreq_unregister(struct cpufreq_arm_bL_ops *ops);
  
  #endif /* CPUFREQ_ARM_BIG_LITTLE_H */