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 */
82