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
  29 unsigned 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
  36 struct sh_clk_ops shmobile_fixed_ratio_clk_ops = {
  37         .recalc = shmobile_fixed_ratio_clk_recalc,
  38 };
  39
  40 int __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
  51 int __clk_get(struct clk *clk)
  52 {
  53         return 1;
  54 }
  55 EXPORT_SYMBOL(__clk_get);
  56
  57 void __clk_put(struct clk *clk)
  58 {
  59 }
  60 EXPORT_SYMBOL(__clk_put);