Linux kernel mirror (for testing)
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1#ifndef __ASM_SH_CLOCK_H
2#define __ASM_SH_CLOCK_H
3
4#include <linux/kref.h>
5#include <linux/list.h>
6#include <linux/seq_file.h>
7#include <linux/clk.h>
8
9struct clk;
10
11struct clk_ops {
12 void (*init)(struct clk *clk);
13 void (*enable)(struct clk *clk);
14 void (*disable)(struct clk *clk);
15 void (*recalc)(struct clk *clk);
16 int (*set_rate)(struct clk *clk, unsigned long rate, int algo_id);
17 long (*round_rate)(struct clk *clk, unsigned long rate);
18};
19
20struct clk {
21 struct list_head node;
22 const char *name;
23 int id;
24 struct module *owner;
25
26 struct clk *parent;
27 struct clk_ops *ops;
28
29 struct kref kref;
30
31 unsigned long rate;
32 unsigned long flags;
33};
34
35#define CLK_ALWAYS_ENABLED (1 << 0)
36#define CLK_RATE_PROPAGATES (1 << 1)
37
38/* Should be defined by processor-specific code */
39void arch_init_clk_ops(struct clk_ops **, int type);
40
41/* arch/sh/kernel/cpu/clock.c */
42int clk_init(void);
43
44int __clk_enable(struct clk *);
45void __clk_disable(struct clk *);
46
47void clk_recalc_rate(struct clk *);
48
49int clk_register(struct clk *);
50void clk_unregister(struct clk *);
51
52/* the exported API, in addition to clk_set_rate */
53/**
54 * clk_set_rate_ex - set the clock rate for a clock source, with additional parameter
55 * @clk: clock source
56 * @rate: desired clock rate in Hz
57 * @algo_id: algorithm id to be passed down to ops->set_rate
58 *
59 * Returns success (0) or negative errno.
60 */
61int clk_set_rate_ex(struct clk *clk, unsigned long rate, int algo_id);
62
63enum clk_sh_algo_id {
64 NO_CHANGE = 0,
65
66 IUS_N1_N1,
67 IUS_322,
68 IUS_522,
69 IUS_N11,
70
71 SB_N1,
72
73 SB3_N1,
74 SB3_32,
75 SB3_43,
76 SB3_54,
77
78 BP_N1,
79
80 IP_N1,
81};
82#endif /* __ASM_SH_CLOCK_H */