LXR linux/include/asm-arm/plat-s3c24xx/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
  13struct 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
  32extern struct clk s3c24xx_dclk0;
  33extern struct clk s3c24xx_dclk1;
  34extern struct clk s3c24xx_clkout0;
  35extern struct clk s3c24xx_clkout1;
  36extern struct clk s3c24xx_uclk;
  37
  38extern struct clk clk_usb_bus;
  39
  40/* core clock support */
  41
  42extern struct clk clk_f;
  43extern struct clk clk_h;
  44extern struct clk clk_p;
  45extern struct clk clk_mpll;
  46extern struct clk clk_upll;
  47extern 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
  54extern struct mutex clocks_mutex;
  55
  56extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
  57
  58extern int s3c24xx_register_clock(struct clk *clk);
  59extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
  60
  61extern int s3c24xx_setup_clocks(unsigned long xtal,
  62                                unsigned long fclk,
  63                                unsigned long hclk,
  64                                unsigned long pclk);
  65