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clock.c

/*
 *  linux/arch/arm/mach-integrator/clock.c
 *
 *  Copyright (C) 2004 ARM Limited.
 *  Written by Deep Blue Solutions Limited.
 *
 * 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.
 */
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/clk.h>
#include <linux/mutex.h>

#include <asm/clkdev.h>
#include <mach/clkdev.h>

int clk_enable(struct clk *clk)
{
      return 0;
}
EXPORT_SYMBOL(clk_enable);

void clk_disable(struct clk *clk)
{
}
EXPORT_SYMBOL(clk_disable);

unsigned long clk_get_rate(struct clk *clk)
{
      return clk->rate;
}
EXPORT_SYMBOL(clk_get_rate);

long clk_round_rate(struct clk *clk, unsigned long rate)
{
      struct icst525_vco vco;
      vco = icst525_khz_to_vco(clk->params, rate / 1000);
      return icst525_khz(clk->params, vco) * 1000;
}
EXPORT_SYMBOL(clk_round_rate);

int clk_set_rate(struct clk *clk, unsigned long rate)
{
      int ret = -EIO;

      if (clk->setvco) {
            struct icst525_vco vco;

            vco = icst525_khz_to_vco(clk->params, rate / 1000);
            clk->rate = icst525_khz(clk->params, vco) * 1000;
            clk->setvco(clk, vco);
            ret = 0;
      }
      return ret;
}
EXPORT_SYMBOL(clk_set_rate);

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