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