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
  14 struct 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
  33 extern struct clk s3c24xx_dclk0;
  34 extern struct clk s3c24xx_dclk1;
  35 extern struct clk s3c24xx_clkout0;
  36 extern struct clk s3c24xx_clkout1;
  37 extern struct clk s3c24xx_uclk;
  38
  39 extern struct clk clk_usb_bus;
  40
  41 /* core clock support */
  42
  43 extern struct clk clk_f;
  44 extern struct clk clk_h;
  45 extern struct clk clk_p;
  46 extern struct clk clk_mpll;
  47 extern struct clk clk_upll;
  48 extern struct clk clk_epll;
  49 extern struct clk clk_xtal;
  50 extern struct clk clk_ext;
  51
  52 /* S3C64XX specific clocks */
  53 extern struct clk clk_h2;
  54 extern struct clk clk_27m;
  55 extern 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
  62 extern spinlock_t clocks_lock;
  63
  64 extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
  65
  66 extern int s3c24xx_register_clock(struct clk *clk);
  67 extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
  68
  69 extern int s3c24xx_register_baseclocks(unsigned long xtal);
  70
  71 extern void s3c64xx_register_clocks(void);
  72
  73 extern void s3c24xx_setup_clocks(unsigned long fclk,
  74                                  unsigned long hclk,
  75                                  unsigned long pclk);
  76
  77 extern void s3c2410_setup_clocks(void);
  78 extern void s3c2412_setup_clocks(void);
  79 extern void s3c244x_setup_clocks(void);
  80 extern void s3c2443_setup_clocks(void);
  81
  82 /* S3C64XX specific functions and clocks */
  83
  84 extern int s3c64xx_sclk_ctrl(struct clk *clk, int enable);
  85
  86 /* Init for pwm clock code */
  87
  88 extern void s3c_pwmclk_init(void);
  89