arch/arm/mach-s3c2410/clock.h

   1 /*
   2  * linux/arch/arm/mach-s3c2410/clock.h
   3  *
   4  * Copyright (c) 2004-2005 Simtec Electronics
   5  *      http://www.simtec.co.uk/products/SWLINUX/
   6  *      Written by Ben Dooks, <ben@simtec.co.uk>
   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 version 2 as
  10  * published by the Free Software Foundation.
  11 */
  12
  13 struct clk {
  14         struct list_head      list;
  15         struct module        *owner;
  16         struct clk           *parent;
  17         const char           *name;
  18         int                   id;
  19         int                   usage;
  20         unsigned long         rate;
  21         unsigned long         ctrlbit;
  22
  23         int                 (*enable)(struct clk *, int enable);
  24         int                 (*set_rate)(struct clk *c, unsigned long rate);
  25         unsigned long       (*round_rate)(struct clk *c, unsigned long rate);
  26         int                 (*set_parent)(struct clk *c, struct clk *parent);
  27 };
  28
  29 /* other clocks which may be registered by board support */
  30
  31 extern struct clk s3c24xx_dclk0;
  32 extern struct clk s3c24xx_dclk1;
  33 extern struct clk s3c24xx_clkout0;
  34 extern struct clk s3c24xx_clkout1;
  35 extern struct clk s3c24xx_uclk;
  36
  37 extern struct clk clk_usb_bus;
  38
  39 /* exports for arch/arm/mach-s3c2410
  40  *
  41  * Please DO NOT use these outside of arch/arm/mach-s3c2410
  42 */
  43
  44 extern struct mutex clocks_mutex;
  45
  46 extern int s3c24xx_clkcon_enable(struct clk *clk, int enable);
  47 extern int s3c24xx_register_clock(struct clk *clk);
  48
  49 extern int s3c24xx_setup_clocks(unsigned long xtal,
  50                                 unsigned long fclk,
  51                                 unsigned long hclk,
  52                                 unsigned long pclk);