arch/arm/mach-nomadik/clock.c

   1 /*
   2  * linux/arch/arm/mach-nomadik/clock.c
   3  *
   4  * Copyright (C) 2009 Alessandro Rubini
   5  */
   6 #include <common.h>
   7 #include <errno.h>
   8 #include <linux/err.h>
   9 #include <linux/clk.h>
  10 #include <init.h>
  11 #include <asm/clkdev.h>
  12
  13 #include "clock.h"
  14
  15 /*
  16  * The nomadik board uses generic clocks, but the serial pl011 file
  17  * calls clk_enable(), clk_disable(), clk_get_rate(), so we provide them
  18  */
  19 unsigned long clk_get_rate(struct clk *clk)
  20 {
  21         return clk->rate;
  22 }
  23 EXPORT_SYMBOL(clk_get_rate);
  24
  25 /* enable and disable do nothing */
  26 int clk_enable(struct clk *clk)
  27 {
  28         return 0;
  29 }
  30 EXPORT_SYMBOL(clk_enable);
  31
  32 void clk_disable(struct clk *clk)
  33 {
  34 }
  35 EXPORT_SYMBOL(clk_disable);
  36
  37 int __clk_get(struct clk *clk)
  38 {
  39         return 1;
  40 }
  41
  42 /* Create a clock structure with the given name */
  43 int nmdk_clk_create(struct clk *clk, const char *dev_id)
  44 {
  45         struct clk_lookup *clkdev;
  46
  47         clkdev = clkdev_alloc(clk, NULL, dev_id);
  48         if (!clkdev)
  49                 return -ENOMEM;
  50         clkdev_add(clkdev);
  51         return 0;
  52 }