arch/arm/plat-s3c24xx/include/plat/clock.h

   1 /* linux/include/asm-arm/plat-s3c24xx/clock.h
   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       (*get_rate)(struct clk *c);
  26         unsigned long       (*round_rate)(struct clk *c, unsigned long rate);
  27         int                 (*set_parent)(struct clk *c, struct clk *parent);
  28 };
  29
  30 /* other clocks which may be registered by board support */
  31
  32 extern struct clk s3c24xx_dclk0;
  33 extern struct clk s3c24xx_dclk1;
  34 extern struct clk s3c24xx_clkout0;
  35 extern struct clk s3c24xx_clkout1;
  36 extern struct clk s3c24xx_uclk;
  37
  38 extern struct clk clk_usb_bus;
  39
  40 /* core clock support */
  41
  42 extern struct clk clk_f;
  43 extern struct clk clk_h;
  44 extern struct clk clk_p;
  45 extern struct clk clk_mpll;
  46 extern struct clk clk_upll;
  47 extern struct clk clk_xtal;
  48
  49 /* exports for arch/arm/mach-s3c2410
  50  *
  51  * Please DO NOT use these outside of arch/arm/mach-s3c2410
  52 */
  53
  54 extern struct mutex clocks_mutex;
  55
  56 extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
  57
  58 extern int s3c24xx_register_clock(struct clk *clk);
  59 extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
  60
  61 extern int s3c24xx_setup_clocks(unsigned long xtal,
  62                                 unsigned long fclk,
  63                                 unsigned long hclk,
  64                                 unsigned long pclk);