/*
   *  linux/arch/arm/mach-sa1100/clock.c
   */
  #include <linux/module.h>
  #include <linux/kernel.h>

  #include <linux/clk.h>
  #include <linux/spinlock.h>

  #include <linux/delay.h>

  #include <linux/clkdev.h>

  #include "clock.h"

  static DEFINE_SPINLOCK(clocks_lock);

  int clk_enable(struct clk *clk)
  {
  	unsigned long flags;
  
  	spin_lock_irqsave(&clocks_lock, flags);
  	if (clk->enabled++ == 0)

  		clk->ops->enable(clk);

  	spin_unlock_irqrestore(&clocks_lock, flags);

  
  	if (clk->delay)
  		udelay(clk->delay);

  	return 0;
  }
  EXPORT_SYMBOL(clk_enable);
  
  void clk_disable(struct clk *clk)
  {
  	unsigned long flags;
  
  	WARN_ON(clk->enabled == 0);
  
  	spin_lock_irqsave(&clocks_lock, flags);
  	if (--clk->enabled == 0)

  		clk->ops->disable(clk);

  	spin_unlock_irqrestore(&clocks_lock, flags);
  }
  EXPORT_SYMBOL(clk_disable);
  
  unsigned long clk_get_rate(struct clk *clk)
  {

  	unsigned long rate;
  
  	rate = clk->rate;
  	if (clk->ops->getrate)
  		rate = clk->ops->getrate(clk);
  
  	return rate;

  }
  EXPORT_SYMBOL(clk_get_rate);

  int clk_set_rate(struct clk *clk, unsigned long rate)
  {
  	unsigned long flags;
  	int ret = -EINVAL;
  
  	if (clk->ops->setrate) {
  		spin_lock_irqsave(&clocks_lock, flags);
  		ret = clk->ops->setrate(clk, rate);
  		spin_unlock_irqrestore(&clocks_lock, flags);
  	}
  
  	return ret;
  }
  EXPORT_SYMBOL(clk_set_rate);

  void clk_dummy_enable(struct clk *clk)

  {

  }

  void clk_dummy_disable(struct clk *clk)

  {

  }

  const struct clkops clk_dummy_ops = {
  	.enable		= clk_dummy_enable,
  	.disable	= clk_dummy_disable,
  };
  
  struct clk clk_dummy = {
  	.ops		= &clk_dummy_ops,

  };