Eric Lee / smarc-fsl-linux-kernel

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include/linux/pm_clock.h 1.67 KB
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b5e8d269d   Rafael J. Wysocki   PM: Move clock-re... 
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  /*
   * pm_clock.h - Definitions and headers related to device clocks.
   *
   * Copyright (C) 2011 Rafael J. Wysocki <rjw@sisk.pl>, Renesas Electronics Corp.
   *
   * This file is released under the GPLv2.
   */
  
  #ifndef _LINUX_PM_CLOCK_H
  #define _LINUX_PM_CLOCK_H
  
  #include <linux/device.h>
  #include <linux/notifier.h>
  
  struct pm_clk_notifier_block {
  	struct notifier_block nb;
  	struct dev_pm_domain *pm_domain;
  	char *con_ids[];
  };
  
  #ifdef CONFIG_PM_CLK
  static inline bool pm_clk_no_clocks(struct device *dev)
  {
  	return dev && dev->power.subsys_data
  		&& list_empty(&dev->power.subsys_data->clock_list);
  }
  
  extern void pm_clk_init(struct device *dev);
  extern int pm_clk_create(struct device *dev);
  extern void pm_clk_destroy(struct device *dev);
  extern int pm_clk_add(struct device *dev, const char *con_id);
  extern void pm_clk_remove(struct device *dev, const char *con_id);
  extern int pm_clk_suspend(struct device *dev);
  extern int pm_clk_resume(struct device *dev);
  #else
  static inline bool pm_clk_no_clocks(struct device *dev)
  {
  	return true;
  }
  static inline void pm_clk_init(struct device *dev)
  {
  }
  static inline int pm_clk_create(struct device *dev)
  {
  	return -EINVAL;
  }
  static inline void pm_clk_destroy(struct device *dev)
  {
  }
  static inline int pm_clk_add(struct device *dev, const char *con_id)
  {
  	return -EINVAL;
  }
  static inline void pm_clk_remove(struct device *dev, const char *con_id)
  {
  }
  #define pm_clk_suspend	NULL
  #define pm_clk_resume	NULL
  #endif
  
  #ifdef CONFIG_HAVE_CLK
  extern void pm_clk_add_notifier(struct bus_type *bus,
  					struct pm_clk_notifier_block *clknb);
  #else
  static inline void pm_clk_add_notifier(struct bus_type *bus,
  					struct pm_clk_notifier_block *clknb)
  {
  }
  #endif
  
  #endif