LXR linux/drivers/clk/at91/pmc.c

   1/*
   2 *  Copyright (C) 2013 Boris BREZILLON <b.brezillon@overkiz.com>
   3 *
   4 * This program is free software; you can redistribute it and/or modify
   5 * it under the terms of the GNU General Public License as published by
   6 * the Free Software Foundation; either version 2 of the License, or
   7 * (at your option) any later version.
   8 *
   9 */
  10
  11#include <linux/clk-provider.h>
  12#include <linux/clkdev.h>
  13#include <linux/clk/at91_pmc.h>
  14#include <linux/of.h>
  15#include <linux/mfd/syscon.h>
  16#include <linux/regmap.h>
  17
  18#include <asm/proc-fns.h>
  19
  20#include "pmc.h"
  21
  22int of_at91_get_clk_range(struct device_node *np, const char *propname,
  23                          struct clk_range *range)
  24{
  25        u32 min, max;
  26        int ret;
  27
  28        ret = of_property_read_u32_index(np, propname, 0, &min);
  29        if (ret)
  30                return ret;
  31
  32        ret = of_property_read_u32_index(np, propname, 1, &max);
  33        if (ret)
  34                return ret;
  35
  36        if (range) {
  37                range->min = min;
  38                range->max = max;
  39        }
  40
  41        return 0;
  42}
  43EXPORT_SYMBOL_GPL(of_at91_get_clk_range);
  44