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-rw-r--r--arch/arm/plat-samsung/include/plat/clock.h115
1 files changed, 115 insertions, 0 deletions
diff --git a/arch/arm/plat-samsung/include/plat/clock.h b/arch/arm/plat-samsung/include/plat/clock.h
new file mode 100644
index 000000000000..60b62692ac7a
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+++ b/arch/arm/plat-samsung/include/plat/clock.h
@@ -0,0 +1,115 @@
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
16/**
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().
22 *
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.
26 *
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.
30 */
31struct clk_ops {
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);
36};
37
38struct clk {
39 struct list_head list;
40 struct module *owner;
41 struct clk *parent;
42 const char *name;
43 int id;
44 int usage;
45 unsigned long rate;
46 unsigned long ctrlbit;
47
48 struct clk_ops *ops;
49 int (*enable)(struct clk *, int enable);
50};
51
52/* other clocks which may be registered by board support */
53
54extern struct clk s3c24xx_dclk0;
55extern struct clk s3c24xx_dclk1;
56extern struct clk s3c24xx_clkout0;
57extern struct clk s3c24xx_clkout1;
58extern struct clk s3c24xx_uclk;
59
60extern struct clk clk_usb_bus;
61
62/* core clock support */
63
64extern struct clk clk_f;
65extern struct clk clk_h;
66extern struct clk clk_p;
67extern struct clk clk_mpll;
68extern struct clk clk_upll;
69extern struct clk clk_epll;
70extern struct clk clk_xtal;
71extern struct clk clk_ext;
72
73/* S3C64XX specific clocks */
74extern struct clk clk_h2;
75extern struct clk clk_27m;
76extern struct clk clk_48m;
77
78extern int clk_default_setrate(struct clk *clk, unsigned long rate);
79extern struct clk_ops clk_ops_def_setrate;
80
81/* exports for arch/arm/mach-s3c2410
82 *
83 * Please DO NOT use these outside of arch/arm/mach-s3c2410
84*/
85
86extern spinlock_t clocks_lock;
87
88extern int s3c2410_clkcon_enable(struct clk *clk, int enable);
89
90extern int s3c24xx_register_clock(struct clk *clk);
91extern int s3c24xx_register_clocks(struct clk **clk, int nr_clks);
92
93extern void s3c_register_clocks(struct clk *clk, int nr_clks);
94
95extern int s3c24xx_register_baseclocks(unsigned long xtal);
96
97extern void s5p_register_clocks(unsigned long xtal_freq);
98
99extern void s3c24xx_setup_clocks(unsigned long fclk,
100 unsigned long hclk,
101 unsigned long pclk);
102
103extern void s3c2410_setup_clocks(void);
104extern void s3c2412_setup_clocks(void);
105extern void s3c244x_setup_clocks(void);
106extern void s3c2443_setup_clocks(void);
107
108/* S3C64XX specific functions and clocks */
109
110extern int s3c64xx_sclk_ctrl(struct clk *clk, int enable);
111
112/* Init for pwm clock code */
113
114extern void s3c_pwmclk_init(void);
115
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