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);