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>
13 #include <linux/clkdev.h>
18 * struct clk_ops - standard clock operations
19 * @set_rate: set the clock rate, see clk_set_rate().
20 * @get_rate: get the clock rate, see clk_get_rate().
21 * @round_rate: round a given clock rate, see clk_round_rate().
22 * @set_parent: set the clock's parent, see clk_set_parent().
24 * Group the common clock implementations together so that we
25 * don't have to keep setting the same fields again. We leave
26 * enable in struct clk.
28 * Adding an extra layer of indirection into the process should
29 * not be a problem as it is unlikely these operations are going
30 * to need to be called quickly.
33 int (*set_rate)(struct clk *c, unsigned long rate);
34 unsigned long (*get_rate)(struct clk *c);
35 unsigned long (*round_rate)(struct clk *c, unsigned long rate);
36 int (*set_parent)(struct clk *c, struct clk *parent);
40 struct list_head list;
48 unsigned long ctrlbit;
51 int (*enable)(struct clk *, int enable);
52 struct clk_lookup lookup;
53 #if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
54 struct dentry *dent; /* For visible tree hierarchy */
58 /* other clocks which may be registered by board support */
60 extern struct clk s3c24xx_dclk0;
61 extern struct clk s3c24xx_dclk1;
62 extern struct clk s3c24xx_clkout0;
63 extern struct clk s3c24xx_clkout1;
64 extern struct clk s3c24xx_uclk;
66 extern struct clk clk_usb_bus;
68 /* core clock support */
70 extern struct clk clk_f;
71 extern struct clk clk_h;
72 extern struct clk clk_p;
73 extern struct clk clk_mpll;
74 extern struct clk clk_upll;
75 extern struct clk clk_epll;
76 extern struct clk clk_xtal;
77 extern struct clk clk_ext;
79 /* S3C64XX specific clocks */
80 extern struct clk clk_h2;
81 extern struct clk clk_27m;
82 extern struct clk clk_48m;
83 extern struct clk clk_xusbxti;
85 extern int clk_default_setrate(struct clk *clk, unsigned long rate);
86 extern struct clk_ops clk_ops_def_setrate;
88 /* exports for arch/arm/mach-s3c2410
90 * Please DO NOT use these outside of arch/arm/mach-s3c2410
93 extern spinlock_t clocks_lock;
95 extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
97 extern int s3c24xx_register_clock(struct clk *clk);
98 extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
100 extern void s3c_register_clocks(struct clk *clk, int nr_clks);
101 extern void s3c_disable_clocks(struct clk *clkp, int nr_clks);
103 extern int s3c24xx_register_baseclocks(unsigned long xtal);
105 extern void s5p_register_clocks(unsigned long xtal_freq);
107 extern void s3c24xx_setup_clocks(unsigned long fclk,
111 extern void s3c2410_setup_clocks(void);
112 extern void s3c2412_setup_clocks(void);
113 extern void s3c244x_setup_clocks(void);
114 extern void s3c2443_setup_clocks(void);
116 /* S3C64XX specific functions and clocks */
118 extern int s3c64xx_sclk_ctrl(struct clk *clk, int enable);
120 /* Init for pwm clock code */
122 extern void s3c_pwmclk_init(void);