LXR linux/arch/arm/plat-s3c/include/plat/clock.h

   1/* linux/arch/arm/plat-s3c/include/plat/clock.h
   2 *
   3 * Copyright (c) 2004-2005 Simtec Electronics
   4 *      http://www.simtec.co.uk/products/SWLINUX/
   5 *      Written by Ben Dooks, <ben@simtec.co.uk>
   6 *
   7 * This program is free software; you can redistribute it and/or modify
   8 * it under the terms of the GNU General Public License version 2 as
   9 * published by the Free Software Foundation.
  10*/
  11
  12#include <linux/spinlock.h>
  13
  14struct clk {
  15        struct list_head      list;
  16        struct module        *owner;
  17        struct clk           *parent;
  18        const char           *name;
  19        int                   id;
  20        int                   usage;
  21        unsigned long         rate;
  22        unsigned long         ctrlbit;
  23
  24        int                 (*enable)(struct clk *, int enable);
  25        int                 (*set_rate)(struct clk *c, unsigned long rate);
  26        unsigned long       (*get_rate)(struct clk *c);
  27        unsigned long       (*round_rate)(struct clk *c, unsigned long rate);
  28        int                 (*set_parent)(struct clk *c, struct clk *parent);
  29};
  30
  31/* other clocks which may be registered by board support */
  32
  33extern struct clk s3c24xx_dclk0;
  34extern struct clk s3c24xx_dclk1;
  35extern struct clk s3c24xx_clkout0;
  36extern struct clk s3c24xx_clkout1;
  37extern struct clk s3c24xx_uclk;
  38
  39extern struct clk clk_usb_bus;
  40
  41/* core clock support */
  42
  43extern struct clk clk_f;
  44extern struct clk clk_h;
  45extern struct clk clk_p;
  46extern struct clk clk_mpll;
  47extern struct clk clk_upll;
  48extern struct clk clk_epll;
  49extern struct clk clk_xtal;
  50extern struct clk clk_ext;
  51
  52/* S3C64XX specific clocks */
  53extern struct clk clk_h2;
  54extern struct clk clk_27m;
  55extern struct clk clk_48m;
  56
  57/* exports for arch/arm/mach-s3c2410
  58 *
  59 * Please DO NOT use these outside of arch/arm/mach-s3c2410
  60*/
  61
  62extern spinlock_t clocks_lock;
  63
  64extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
  65
  66extern int s3c24xx_register_clock(struct clk *clk);
  67extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
  68
  69extern int s3c24xx_register_baseclocks(unsigned long xtal);
  70
  71extern void s3c64xx_register_clocks(void);
  72
  73extern void s3c24xx_setup_clocks(unsigned long fclk,
  74                                 unsigned long hclk,
  75                                 unsigned long pclk);
  76
  77extern void s3c2410_setup_clocks(void);
  78extern void s3c2412_setup_clocks(void);
  79extern void s3c244x_setup_clocks(void);
  80extern void s3c2443_setup_clocks(void);
  81
  82/* S3C64XX specific functions and clocks */
  83
  84extern int s3c64xx_sclk_ctrl(struct clk *clk, int enable);
  85
  86/* Init for pwm clock code */
  87
  88extern void s3c_pwmclk_init(void);
  89
  90