1
/* linux/arch/arm/plat-s3c/include/plat/clock.h
3
* Copyright (c) 2004-2005 Simtec Electronics
4
* http://www.simtec.co.uk/products/SWLINUX/
5
* Written by Ben Dooks, <ben@simtec.co.uk>
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.
12
#include <linux/spinlock.h>
17
* struct clk_ops - standard clock operations
18
* @set_rate: set the clock rate, see clk_set_rate().
19
* @get_rate: get the clock rate, see clk_get_rate().
20
* @round_rate: round a given clock rate, see clk_round_rate().
21
* @set_parent: set the clock's parent, see clk_set_parent().
23
* Group the common clock implementations together so that we
24
* don't have to keep setting the same fiels again. We leave
25
* enable in struct clk.
27
* Adding an extra layer of indirection into the process should
28
* not be a problem as it is unlikely these operations are going
29
* to need to be called quickly.
32
int (*set_rate)(struct clk *c, unsigned long rate);
33
unsigned long (*get_rate)(struct clk *c);
34
unsigned long (*round_rate)(struct clk *c, unsigned long rate);
35
int (*set_parent)(struct clk *c, struct clk *parent);
39
struct list_head list;
46
unsigned long ctrlbit;
49
int (*enable)(struct clk *, int enable);
50
#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
51
struct dentry *dent; /* For visible tree hierarchy */
55
/* other clocks which may be registered by board support */
57
extern struct clk s3c24xx_dclk0;
58
extern struct clk s3c24xx_dclk1;
59
extern struct clk s3c24xx_clkout0;
60
extern struct clk s3c24xx_clkout1;
61
extern struct clk s3c24xx_uclk;
63
extern struct clk clk_usb_bus;
65
/* core clock support */
67
extern struct clk clk_f;
68
extern struct clk clk_h;
69
extern struct clk clk_p;
70
extern struct clk clk_mpll;
71
extern struct clk clk_upll;
72
extern struct clk clk_epll;
73
extern struct clk clk_xtal;
74
extern struct clk clk_ext;
76
/* S3C64XX specific clocks */
77
extern struct clk clk_h2;
78
extern struct clk clk_27m;
79
extern struct clk clk_48m;
80
extern struct clk clk_xusbxti;
82
extern int clk_default_setrate(struct clk *clk, unsigned long rate);
83
extern struct clk_ops clk_ops_def_setrate;
85
/* exports for arch/arm/mach-s3c2410
87
* Please DO NOT use these outside of arch/arm/mach-s3c2410
90
extern spinlock_t clocks_lock;
92
extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
94
extern int s3c24xx_register_clock(struct clk *clk);
95
extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
97
extern void s3c_register_clocks(struct clk *clk, int nr_clks);
98
extern void s3c_disable_clocks(struct clk *clkp, int nr_clks);
100
extern int s3c24xx_register_baseclocks(unsigned long xtal);
102
extern void s5p_register_clocks(unsigned long xtal_freq);
104
extern void s3c24xx_setup_clocks(unsigned long fclk,
108
extern void s3c2410_setup_clocks(void);
109
extern void s3c2412_setup_clocks(void);
110
extern void s3c244x_setup_clocks(void);
111
extern void s3c2443_setup_clocks(void);
113
/* S3C64XX specific functions and clocks */
115
extern int s3c64xx_sclk_ctrl(struct clk *clk, int enable);
117
/* Init for pwm clock code */
119
extern void s3c_pwmclk_init(void);