LXR linux/arch/arm/mach-shmobile/clock.c

   1/*
   2 * SH-Mobile Clock Framework
   3 *
   4 * Copyright (C) 2010  Magnus Damm
   5 *
   6 * Used together with arch/arm/common/clkdev.c and drivers/sh/clk.c.
   7 *
   8 * This program is free software; you can redistribute it and/or modify
   9 * it under the terms of the GNU General Public License as published by
  10 * the Free Software Foundation; version 2 of the License.
  11 *
  12 * This program is distributed in the hope that it will be useful,
  13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 * GNU General Public License for more details.
  16 *
  17 * You should have received a copy of the GNU General Public License
  18 * along with this program; if not, write to the Free Software
  19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  20 *
  21 */
  22#include <linux/kernel.h>
  23#include <linux/init.h>
  24#include <linux/sh_clk.h>
  25#include <linux/export.h>
  26#include <mach/clock.h>
  27#include <mach/common.h>
  28
  29unsigned long shmobile_fixed_ratio_clk_recalc(struct clk *clk)
  30{
  31        struct clk_ratio *p = clk->priv;
  32
  33        return clk->parent->rate / p->div * p->mul;
  34};
  35
  36struct sh_clk_ops shmobile_fixed_ratio_clk_ops = {
  37        .recalc = shmobile_fixed_ratio_clk_recalc,
  38};
  39
  40int __init shmobile_clk_init(void)
  41{
  42        /* Kick the child clocks.. */
  43        recalculate_root_clocks();
  44
  45        /* Enable the necessary init clocks */
  46        clk_enable_init_clocks();
  47
  48        return 0;
  49}
  50
  51int __clk_get(struct clk *clk)
  52{
  53        return 1;
  54}
  55EXPORT_SYMBOL(__clk_get);
  56
  57void __clk_put(struct clk *clk)
  58{
  59}
  60EXPORT_SYMBOL(__clk_put);
  61